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213-093
Nolan Vlahovich Hilcorp Alaska, LLC Geotech 3800 Centerpoint Drive, Suite 1400 Anchorage, AK 99503 Tele: (907) 564-4558 E-mail: nolan.vlahovich@hilcorp.com Please acknowledge receipt by signing and returning one copy of this transmittal. Received By: Date: Date: 9/12/2024 To: Alaska Oil & Gas Conservation Commission Natural Resource Technician 333 W 7th Ave Suite 100 Anchorage, AK 99501 SFTP DATA TRANSMITTAL T#20240912 Well API #PTD #Log Date Log Company Log Type AOGCC Eset# BCU 19RD 50133205790100 219188 7/22/2024 BAKER RPM Blossom 1 50133206480000 215015 8/31/2024 READ Coilflag Blossom 1 50133206480000 215015 9/2/2024 READ MemoryRadialCementBondLog KBY 43-07Y 50133206250000 214019 9/9/2024 AK E-LINE Perf NCIU A-19 50883201940000 224026 8/29/2024 AK E-LINE Perf NCIU A-19 50883201940000 224026 9/4/2024 AK E-LINE Plug/Perf NCIU A-20 50883201960000 224065 8/29/2024 AK E-LINE Perf NCIU A-20 50883201960000 224065 9/3/2024 AK E-LINE Plug/Perf PBU N-21A (REVISED) 50029213420100 196196 3/28/2024 BAKER SPN PBU N-02 50029200830000 170055 7/25/2024 BAKER SPN PBU S-104 50029229880000 200196 7/7/2024 BAKER SPN PBU Z-68 50029234930000 213093 7/6/2024 BAKER SPN Pearl 11 50133207120000 223032 6/24/2024 BAKER SPN Revision explanation: OmniView .las file was the same as the carbo/oxygen .las file, omniview file has been replaced with the correct file and data. Please include current contact information if different from above. T39545 T39546 T39546 T39547 T39548 T39548 T39549 T39549 T39550 T39551 T39552 T39553 T39554 PBU Z-68 50029234930000 213093 7/6/2024 BAKER SPN Gavin Gluyas Digitally signed by Gavin Gluyas Date: 2024.09.12 12:52:42 -08'00' Suspended Well Inspection Review Report Reviewed By: P.I. Suprv Comm ________ JBR 07/31/2023 InspectNo:susKPS230621130504 Well Pressures (psi): Date Inspected:6/21/2023 Inspector:Kam StJohn If Verified, How?Other (specify in comments) Suspension Date:8/26/2013 Tubing:116 IA:118 OA:322 Operator:Hilcorp North Slope, LLC Operator Rep:Ryan Holt Date AOGCC Notified:6/20/2023 Type of Inspection:Subsequent Well Name:PRUDHOE BAY UNIT Z-68 Permit Number:2130930 Wellhead Condition Wellhead was in good shape all gauges on the tree and no sign of leaks Surrounding Surface Condition Well house and surounding area clean from trash no sheen. Condition of Cellar Cellar had a few inches of water well below valves but will be vac'd out. Comments Location verified by pad map Supervisor Comments Suspension Approval:Completion Report Location Verified? Offshore? Fluid in Cellar? Wellbore Diagram Avail? Photos Taken? VR Plug(s) Installed? BPV Installed? Monday, July 31, 2023 7. If perforating: 1. Type of Request: 2. Operator Name: 3. Address: 4. Current Well Class:5. Permit to Drill Number: 6. API Number: 8. Well Name and Number: 9. Property Designation (Lease Number):10. Field: Abandon Suspend Plug for Redrill Perforate New Pool Perforate Plug Perforations Re-enter Susp Well Other Stimulate Fracture Stimulate Alter Casing Pull Tubing Repair Well Other: Change Approved Program Operations shutdown What Regulation or Conservation Order governs well spacing in thes pool? Will planned perforations require a spacing exception?Yes No 11. Total Depth MD (ft): Total Depth TVD (ft): Effective Depth MD: Effective Depth TVD: MPSP (psi): Plugs (MD): Junk (MD): PRESENT WELL CONDITION SUMMARY Perforation Depth MD (ft): Perforation Depth TVD (ft):Tubing Size: Tubing Grade: Tubing MD (ft): Packers and SSSV Type:Packers and SSSV MD (ft) and TVD (ft): Casing Length Size MD TVD Burst Collapse Exploratory Stratigraphic Development Service 12. Attachments: 14. Estimated Date for Commencing Operations: 13. Well Class after proposed work: 15. Well Status after proposed work: 16. Verbal Approval: 17. I hereby certify that the foregoing is true and the procedure approved herein will not be deviated from without prior written approcal. Proposal Summary Wellbore schematic BOP SketchDetailed Operations Program OIL GAS WINJ WAG GINJ WDSPL GSTOR Op Shutdown Suspended SPLUG Abandoned ServiceDevelopmentStrastigraphicExploratory Authorized Name and Digital Signature with Date: Authorized Title: Contact Name: Contact Email: Contact Phone: AOGCC USE ONLY Commission Representative: Conditions of approval: Notify Commission so that a representative may witness Sundry Number: Location ClearanceMechanical Integrity TestBOP TestPlug Integrity Other: Post Initial Injection MIT Req'd? Spacing Exception Required?Yes Yes No No Subsequent Form Required: Approved By:Date: APPROVED BY THE AOGCCCOMMISSIONER PBU Z-68 Renew Well Suspension Hilcorp North Slope, LLC 3800 Centerpoint Dr, Suite 1400, Anchorage, AK 99503 213-093 50-029-23493-00-00 341J ADL 0028262 10233 Conductor Surface Intermediate Production Liner 9066 80 3236 9659 685 10126 20" 9-5/8" 7" 4-1/2" 9034 47 - 127 44 - 3280 44 - 9703 9525 - 10210 47 - 127 44 - 3163 44 - 8757 8611 - 9063 None 520 3090 5410 7500 None 1530 5750 7240 8430 None 4-1/2" 12.6# 13cr85 42 - 9531N/A Structural 4-1/2" HES TNT Packer No SSSV Installed 9409, 8517 Date: Torin Roschinger Area Operations Manager Oliver Sternicki Oliver.Sternicki@hilcorp.com 907.564.4891 PRUDHOE BAY 6/26/2023 Current Pools: PRUDHOE OIL Proposed Pools: PRUDHOE OIL STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION APPLICATION FOR SUNDRY APPROVALS 20 AAC 25.280 Comm. Comm.Sr Pet Eng Sr Pet Geo Sr Res Eng Form 10-403 Revised 10/2022 Approved application is valid for 12 months from the date of approval.Submit PDF to aogcc.permitting@alaska.gov By Grace Christianson at 8:30 am, Jun 08, 2023 323-331 Digitally signed by Torin Roschinger (4662) DN: cn=Torin Roschinger (4662), ou=Users Date: 2023.06.08 05:52:33 -08'00' Torin Roschinger (4662) SFD 6/14/2023MGR02AUG23 Suspension expires June 12, 2028. DSR-6/12/23 N/A GCW 08/02/2023JLC 8/2/2023 08/02/23 Brett W. Huber, Sr. Digitally signed by Brett W. Huber, Sr. Date: 2023.08.02 13:57:21 -08'00' RBDMS JSB 080323 Hilcorp North Slope, LLC Torin Roschinger, PBW Operations Manager 3800 Centerpoint Dr, Suite 1400 Anchorage, Alaska 99503 06/06/2023 Chairman Brett Huber, Sr. Alaska Oil and Gas Conservation Commission 333 West 7th Avenue Anchorage, Alaska 99501 Subject: Prudhoe Well Z-68(PTD #213093) Application for Renewal of Existing Suspension (10-403) Dear Chairman Huber, An AOGCC witnessed suspended well inspection of Prudhoe well Z-68 was conducted on 08/06/2022 (20 AAC 25.110 (h)). The submitted suspended well inspection reflects the current condition of the well (reference 20 AAC 25.110 (f)) and supports the request for renewal of suspension. Recent events from this well indicate that this well is mechanically sound. Specific attachments include: x Suspended Well Site Inspection form documenting the pressures and site condition. x Wellbore diagram illustrating the current configuration of the well. Prudhoe well Z-68 was suspended on 08/26/2013 and has future utility as a rig sidetrack candidate. The strata through which the well was drilled is neither abnormally geopressured nor depleted. The well is mechanically sound and secured with a passing pressure test of the unperforated production tubing/ liner to 3605 psi and production casing to 3700 psi on 8/21/2013. Based on these conditions and the inspection on 08/06/2022 Prudhoe well Z-68 meets the provisions required in 20 AAC 25.110 (a)(1). Hilcorp North Slope, LLC requests approval for renewal of the existing suspension status for this well. Attached is an Application for Sundry Approval (10-403) with a technical justification summarizing the information on the current status and condition of the well (reference 20 AAC 25.110 (a), (b), (e), (h)). In summary, Hilcorp believes Prudhoe well Z-68 is mechanically sound and secure and meets the requirements for renewal of suspended status. If you have any questions, please call me at 406-570-9630 or Oliver Sternicki at 907-564-4891. Sincerely, Torin Roschinger PBW Operations Manager Attachments Technical Justification 2022 Suspended Well Site Inspection form Wellbore Schematic Digitally signed by Torin Roschinger (4662) DN: cn=Torin Roschinger (4662), ou=Users Date: 2023.06.06 16:33:59 -08'00' Torin Roschinger (4662) Prudhoe Well Z-68 (PTD #213093) Technical Justification for Renewal of Suspended Status 06/06/2023 Well History and Status Prudhoe well Z-68 (PTD #213093) was drilled as a producer in July/ August 2013. While drilling, the target production interval was found to be wet and with little pay. The well was completed without perforations and converted to suspended status on 08/26/2013. Passing pressure tests were conducted on the rig with the production tubing/ liner tested to 3605 psi and production casing to 3700 psi on 8/21/2013. The well future utility is as a sidetrack candidate. The well will not allow the migration of fluids, will not damage freshwater or producing or potentially producing formations, will not impair the recovery of oil or gas, and is secure, safe and not a threat to public health. The strata through which the well was drilled is neither abnormally geo-pressured or depleted. Condition of the Wellhead and Surface Location Prudhoe well Z-68 is located on an active, well maintained pad with clean gravel. The pit and surrounding area are in good condition. There is no discoloration and no sheens on the pad, pits, or in nearby water. The well pressure readings are T/I/O = 112/ 113/ 305 psi. Request Hilcorp North Slope, LLC requests approval for renewal of the existing suspension status for Z- 68. A variance to the provisions of 20 AAC 25.110 (c) (2) is also requested under 20 AAC 25.112 (i) to allow the well to remain as suspended in its current condition. All hydrocarbon intervals are isolated and there are no underground sources of fresh water in this area. Suspended Well Inspection Review Report Reviewed By: P.I. Suprv Comm ________ JBR 09/02/2022 InspectNo:susLOL220806124542 Well Pressures (psi): Date Inspected:8/6/2022 Inspector:Lou Laubenstein If Verified, How?Other (specify in comments) Suspension Date:8/26/2013 Tubing:112 IA:113 OA:305 Operator:Hilcorp North Slope, LLC Operator Rep:Ryan Holt Date AOGCC Notified:8/5/2022 Type of Inspection:Subsequent Well Name:PRUDHOE BAY UNIT Z-68 Permit Number:2130930 Wellhead Condition Wellhead in good condition visible condition. Surrounding Surface Condition Surrounding area clean and free of debris. Condition of Cellar Cellar box full of clean water without sheen. Comments location verified with Pad Map. Supervisor Comments Photo (1) attached Suspension Approval:Completion Report Location Verified? Offshore? Fluid in Cellar? Wellbore Diagram Avail? Photos Taken? VR Plug(s) Installed? BPV Installed? Friday, September 2, 2022 9 9 9 9 9 9 9 9 2022-0806_Suspend_PBU_Z-68_photos_ll Page 1 of 1 Suspended Well Inspection – PBU Z-68 PTD 2130930 AOGCC Inspection # susLOL220806124542 Photos by AOGCC Inspector L. Laubenstein 8/6/2022 CAUTION: This email originated from outside the State of Alaska mail system. Do not click links or open attachments unless you recognize the sender and know the content is safe. From:Rixse, Melvin G (OGC) To:AOGCC Records (CED sponsored) Subject:FW: [EXTERNAL] Suspended well inspection for PBU Z-68 (PTD 213-093) Date:Thursday, August 11, 2022 4:57:25 PM Attachments:image001.png From: Oliver Sternicki <Oliver.Sternicki@hilcorp.com> Sent: Thursday, August 11, 2022 4:54 PM To: Roby, David S (OGC) <dave.roby@alaska.gov> Cc: Rixse, Melvin G (OGC) <melvin.rixse@alaska.gov> Subject: RE: [EXTERNAL] Suspended well inspection for PBU Z-68 (PTD 213-093) Dave, See the attached pressure plot since 2014, no real trend in the pressures on the well. The tubing pressure is showing 0 psi in the plots, but that is because the operators aren’t opening up the master, SSV and swab every day on a not op wells. That blip on the IAP in 2018 can be attributed to SL being on the well on 8/11/2018 to conduct a subsidence drift. For the pressure test of their surface equipment this would have added some more fluid to the system and changed the static condition that the well had been in for the 2014 and 2018 inspections. The pressures do look higher than previous, but it may be attributed to the abnormally high ambient temps we have had on the slope this summer. If you would like we can bleed everything all the way down to 0psi and continue to monitor. Oliver Sternicki Hilcorp Alaska, Hilcorp North Slope LLC Well Integrity Engineer Office: (907) 564 4891 Cell: (907) 350 0759 Oliver.Sternicki@hilcorp.com From: Roby, David S (OGC) <dave.roby@alaska.gov> Sent: Thursday, August 11, 2022 4:16 PM To: Oliver Sternicki <Oliver.Sternicki@hilcorp.com> Cc: Rixse, Melvin G (OGC) <melvin.rixse@alaska.gov> Subject: [EXTERNAL] Suspended well inspection for PBU Z-68 (PTD 213-093) Oliver, I noticed on the suspended well inspection report for the subject well that the pressures have been increasing over time, and that there now seems to be T x IA communication. The recorded pressures at the time of the three suspended well inspections for this well have been: Inspection date T/IA/OA Pressures (psi) 5/14/14 0/50/200 8/2/20 0/50/250 8/6/22 112/113/305 Do you have any additional pressure readings from this well? Thanks in advance. Regards, Dave Roby Senior Reservoir Engineer Alaska Oil and Gas Conservation Commission (907)793-1232 The information contained in this email message is confidential and may be legally privileged and is intended only for the use of the individual or entity named above. If you are not an intended recipient or if you have received this message in error, you are hereby notified that any dissemination, distribution, or copy of this email is strictly prohibited. If you have received this email in error, please immediately notify us byreturn email or telephone if the sender's phone number is listed above, then promptly and permanently delete this message. While all reasonable care has been taken to avoid the transmission of viruses, it is the responsibility of the recipient to ensure that the onward transmission, opening, or use of this message and any attachments will not adversely affect its systems or data. No responsibility is accepted by the company in this regard and the recipient should carry out such virus and other checks as it considers appropriate. By Anne Prysunka at 1:41 pm, Aug 09, 2022 Operator Name:2. Development Exploratory Service 5 Permit to Drill Number:213-093 6.50-029-23493-00-00 PRUDHOE BAY, PRUDHOE OIL Hilcorp North Slope, LLC 5. Well Name and Number:8. 10.Field/Pools: Well Class Before Work4. Present Well Condition Summary:11. Total Depth: measured feet feet Plugs measured feet feet Effective Depth: measured feet feet Packer measured feet feettrue vertical true vertical 10233 10126 9034 9409 None None 8517 Casing: Length: Size: MD: TVD: Burst: Collapse: Structural Conductor 80 20" 47 - 127 47 - 127 1530 520 Surface 3236 9-5/8" 44 - 3280 44 - 3163 5750 3090 Intermediate 9659 7" 44 - 9703 44 - 8757 7240 5410 Production Perforation Depth: Measured depth: None feet True vertical depth: N/A feet Tubing (size, grade, measured and true vertical depth)4-1/2" 12.6# 13cr85 42 - 9531 42 - 8616 9409 8517Packers and SSSV (type, measured and true vertical depth) 4-1/2" HES TNT Packer Liner 685 4-1/2" 9525 - 10210 8611 - 9063 8430 7500 12. Stimulation or cement squeeze summary: Intervals treated (measured): Oil-Bbl Gas-Mcf Water-Bbl Casing Pressure Tubing Pressure 0000 00 0 0 0 0 Representative Daily Average Production or Injection Data Prior to well operation: Subsequent to operation: 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. Contact Name: Contact Email: Andy Ogg PBFieldWellIntegrity@hilcorp.co Authorized Name:Stan Golis Authorized Title: Authorized Signature with Date:Contact Phone:907-659-5102 Treatment descriptions including volumes used and final pressure: 13. Operations Manager Operations Performed1. Abandon Plug Perforations Fracture Stimulate Pull Tubing GSTOR WINJ WAG GINJ SUSP 5 SPLUG 16. Well Status after work:Oil Gas Exploratory Development 5 Stratigraphic 15. Well Class after work: Service WDSPL 14. Attachments: (required per 20 AAC 25.070.25.071, & 25.283) Daily Report of Well Operations Copies of Logs and Surveys Run true vertical measured9066 Sundry Number or N/A if C.O. Exempt: No SSSV installed Junk Packer Printed and Electronic Fracture Stimulation Data 5 Inspect Suspended Well Operations shutdown Change Approved Program 5 Senior Pet Engineer:Senior Res. Engineer: STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS Suspend Perforate Other Stimulate Alter Casing Plug for Redrill Perforate New Pool Repair Well Re-enter Susp Well 3.Address: 3800 Centerpoint Dr, Suite 1400, Anchorage, AK 99503 7.Property Designation (Lease Number):ADL 028262 PBU Z-68 9. Logs (List logs and submit electronic and printed data per 20AAC25.071): Stratigraphic Other: API Number: Form 10-404 Revised 03/2020 Submit Within 30 days of Operations By Samantha Carlisle at 12:02 pm, Aug 17, 2020 Digitally signed by Stan Golis DN: cn=Stan Golis, ou=Users Date: 2020.08.17 08:09:07 - 08'00' Stan Golis SFD 8/17/2020DSR-8/17/2020MGR02SEP2020 RBDMS HEW 8/19/2020 ACTIVITY DATE SUMMARY 8/2/2020 T/I/O = 0/50/250. Suspended well inspection by AOGCC rep Matt Herrera. Daily Report of Well Operations PBU Z-68 Suspended Well Site Inspection Form Notify AOGCC Inspectors at least 10 days prior to inspection to allow witness Well Name:Z-68 Field/Pool: Prudhoe Bay / Prudhoe Oil Permit # (PTD):2130930 API Number: Operator:Hilcorp North Slope LLC Date Suspended: 8/26/2013 Surface Location:Section: 19 Twsp: 11N Range: 12E Nearest active pad or road:Z Pad Take to Location Digital camera Map showing well location /Aerial photos Brief well history Wellbore diagram showing downhole condition Latest Sundry or Completion report Past Site Visit documentation Site clearance documentation Pressure gauges, fittings, tools Sample containers for fluids on or near pad Condition of Surface Location AOGCC requires: 1) a description of the condition of the surface location, including discoloration, fluids or sheens visible on the ground or in any nearby water, 2) photographs showing the condition of the location surrounding the well General location condition: Good. Pad or location surface: Good. Location cleanup needed: No. Pits condition: N/A. Surrounding area condition: Good. Water/fluids on pad: No. Discoloration, Sheens on pad, pits or water: None. Samples taken: None. Access road condition: Access road and pad in good condition. Photographs taken (# and description):No. Condition of Wellhead AOGCC requires: 1) a description of the condition of the wellhead, 2) well pressure readings, where practicable, 3) photographs showing the wellhead condition Wellhead/tree/valve description, condition: Tree - Actuated Swab, Upper Master, Lower Master Wellhead - TBG spool with 2 casing valves, Starting head with 1 casing valve. Cellar description, condition, fluids: Snow/Ice Melt. Clean Water. Level below lowermost casing valve. Rat Hole: N/A. Wellhouse or protective barriers: Yes, guard. Well identification sign: Yes. Tubing Pressure (or casing if no tubing):0 psi. Annulus pressures: IA / OA = 50 psi / 250 psi. Wellhead Photos taken (# and description): Yes, (1) wellhead/tree with sign (1) backside of wellhead/tree. Work Required: None Operator Rep (name and signature):Eric Dickerman AOGCC Inspector:Matt Herrera Other Observers: Inspection Date: 8/2/2020 AOGCC Notice Date: 7/31/2020 Time of arrival: 10:15am Time of Departure: 10:30am Site access method: Truck/Walk. 500292349300 Re-Inspection Suspended -l—lTlsDerH-0IReview Report |nspeciNo: SusK4FH200803082525 Date Inspected: 8/2/2020 - | Inspector: Matt Herrera Type of Inspection - VVeUName: PRUDHOEBAY UNIT Z'6O ' _ Permit Number: 2130930 ' Suspension Approval. Completion Report Suspension Date: 8/26/2013 ' Location Verified? W |fVerified, How? Other (specify incomments) Offshore? El Subsequent ' Date AOG[ZNotified: 7/31/2020 ' | Operator: Hi|oo/pNorth Slope, LLC Operator Rep: EhcDickennan Wellbore Dia8/amAvai|7 Pho,tos Taken? VVeU Pressures (psi): Tub|ng: O Fluid in Cellar? W |A: 50 ' BPV|nstaUed? El O4: I50 VRP>ug(s)installed? [] VVeUhead[ondition Wellhead in good shape; no leaks valves and gauges all operational. SSV still installed in closed position. . of Cellar Good. Clean with some water. Nnstains o/subsidence. ' � Surrounding Surface Condition. Nowell house over the well, SunoundinQgravel clean. Noevidence ofleakage, stains orsubsidence. Laterals disconnected ' and blinded off atthe header Comments � Location Verified with Aerial Photo. "upemisorCommen!� Photos(7)attached. Thursday, August 20, 2020 V� N V7 0 o � N C) O o x F►r N' I cq O � � U V � � � oU ^CtMU�o oN N O 00 O u i- M CC O � Z W o �Zcc T J O m 0 V CC� oz z� O O a L O N O 00 O DATA SUBMITTAL COMPLIANCE REPORT 3/2/2017 Permit to Drill 2130930 Well Name/No. PRUDHOE BAY UNIT Z-68 Q61, Operator BP EXPLORATION (ALASKA) INC. API No. 50-029-23493-00-00 MD 10233 TVD 9066 Completion Date g�uo� 3 Completion Status SUSP Current Status SUSP UIC No REQUIRED INFORMATION / Mud Log No V-, Samples No V Directional Survey Yes "/ DATA INFORMATION Types Electric or Other Logs Run: Well Log Information: Log/ Electr Data Digital Dataset Type Med/Frmt Number Name ED C 23300 Digital Data MWD / GR / RES, MWD / GR / RES / DEN / NEU, MWD, USIT, GR / (data taken from Logs Portion of Master Well Data Maint) ED C 23300 Digital Data ED C 23300 Digital Data ED C 23300 Digital Data ED C 23300 Digital Data ED C 23300 Digital Data ED C 23300 Digital Data ED C 23300 Digital Data Log 9/6/2013 23300 Log Header Scans ED C 23301 Digital Data ED C 23301 Digital Data ED C 23301 Digital Data ED C 23301 Digital Data ED C 23301 Digital Data Log Log Run Interval OH/ Scale Media No Start Stop CH Received Comments 420 10234 9/6/2013 Electronic Data Set, Filename: Z-68 VISION Service Recorded Mode Composite Data.las 9/6/2013 Electronic File: Z-68 ASP Final Survey - signed.pdf 9/6/2013 Electronic File: Z-68 ASP Final Survey.csv 9/6/2013 Electronic File: Z-68 ASP Final Survey.xlsx 9/6/2013 Electronic File: Z-68 VISION Service 2 Inch MD ' Recorded Mode Log.pdf 9/6/2013 Electronic File: Z-68 VISION Service 2 Inch P TVDSS Recorded Mode Log.pdf 9/6/2013 Electronic File: Z-68 VISION Service 5 Inch MD 19 Recorded Mode Log.pdf 9/6/2013 Electronic File: Z-68 VISION Service 5 Inch. V TVDSS Recorded Mode Log.pdf 0 0 2130930 PRUDHOE BAY UNIT Z-68 LOG HEADERS 420 10538 9/6/2013 Electronic Data Set, Filename: Z-68PB1 VISION Service Recorded Mode Composite Data.las 9/6/2013 Electronic File: Z-68PB1 ASP Final Survey - signed.pdf 9/6/2013 Electronic File: Z-68PB1 ASP Final Survey.csv 9/6/2013 Electronic File: Z-68PB1 ASP Final Survey.xlsx 9/6/2013 Electronic File: Z-68PB1 VISION Service 2 Inch ' MD Recorded Mode Log.pdf AOGCC Pagel of 3 Thursday, March 02, 2017 DATA SUBMITTAL COMPLIANCE REPORT 3/2/2017 Permit to Drill 2130930 Well Name/No. PRUDHOE BAY UNIT Z-68 Operator BP EXPLORATION (ALASKA) INC. API No. 50-029-23493-00-00 MD 10233 TVD 9066 Completion Date Completion Status SUSP Current Status SUSP UIC No ED C 23301 Digital Data 9/6/2013 Electronic File: Z-68PB1 VISION Service 2 Inch TVDSS Recorded Mode Log.pdf ED C 23301 Digital Data 9/6/2013 Electronic File: Z-68PB1 VISION Service 5 Inch . P MD Recorded Mode Log.pdf ED C 23301 Digital Data 9/6/2013 Electronic File: Z-68PB1 VISION Service 5 Inch TVDSS Recorded Mode Log.pdf Log 23301 Log Header Scans 0 0 2130930 PRUDHOE BAY UNIT Z-68 PB1 LOG HEADERS ED C 23360 Digital Data 9/25/2013 Electronic File: A G y r o d a t a Direction a I S u r v e y ak209.docx ED C 23360 Digital Data 9/25/2013 Electronic File: field and survey information ak209.docx ED C 23360 Digital Data 9/25/2013 Electronic File: Gyro Survey Z-68 BP AK209.xlsx ED C 23360 Digital Data 9/25/2013 Electronic File: Survey quality control BP AK 209.docx ED C 23360 Digital Data 9/25/2013 Electronic File: SURVEY QUALITY CONTROL ak209.docx Rpt C 23360 Survey - Misc 0 0 2130930 PRUDHOE BAY UNIT Z-68 LOG HEADERS ED C 23815 Digital Data 9406 2000 1/22/2014 Electronic Data Set, Filename: BP_Z- 68_US IT_23-AU G-2013_MAI N_014PUC.las ED C 23815 Digital Data 9406 9098 1/22/2014 Electronic Data Set, Filename: BP_Z- 68 USIT_23-AUG-2013 REPEAT 013PUC.las ED C 23815 Digital Data 1/22/2014 Electronic File: BP_Z-68_USIT_23-AUG- - 2013_FI NAL_F I E LD.pdf ED C 23815 Digital Data 1/22/2014 Electronic File: BP_Z-68_USIT_23-AUG- - 2013_FI NAL_FIELD.pds Log C 23815 Log Header Scans 0 0 2130930 PRUDHOE BAY UNIT Z-68 LOG HEADERS Well Cores/Samples Information: Sample Interval Set Name Start Stop Sent Received Number Comments INFORMATION RECEIVED AOGCC Page 2 of 3 Thursday, March 02, 2017 DATA SUBMITTAL COMPLIANCE REPORT 3/2/2017 Permit to Drill 2130930 Well Name/No. PRUDHOE BAY UNIT Z-68 Operator BP EXPLORATION (ALASKA) INC. API No. 50-029-23493-00-00 MD 10233 TVD 9066 Completion Date p��Completion Status SUSP Current Status SUSP UIC No Completion Report Directional / Inclination Data (► Y �i/ Mud Logs, Image Files, Digital Data /YY / A Core Chips Y N Production Test Information Y NA Mechanical Integrity Test Information �Y//( N� Composite Logs, Image, Data Files /(Y 1 Core Photographs Y Geologic Markers/Tops ( Y� Daily Operations Summary 0 Cuttings Samples `YJ/(NAJ Laboratory Analyses Y?,-,4� COMPLIANCE HISTORY Completion Date: Release Date: 7/19/2013 Description Date Comments: Compliance Comments Date: '� I 2-1 It AOGCC Page 3 of 3 Thursday, March 02, 2017 STATE OF ALASKA ALtn- OIL AND GAS CONSERVATION COMMISo REPORT OF SUNDRY WELL OPERATIONS 1. Operations Abandon Repair Well Li Plug Perforations LJ Perforate LJ Other Ld Suspended Well Performed: Alter Casing ❑ Pull Tubing❑ Stimulate - Frac ❑ Waiver ❑ Time Extension❑ Inspection Report Change Approved Program ❑ Operat. Shutdown❑ Stimulate - Other ❑ Re-enter Suspended Well❑ 2. Operator BP Exploration (Alaska), Inc 4. Well Class Before Work: 5. Permit to Drill Number: Name: Development Stratigraphic❑ Exploratory ❑ Service ❑ 213-093-0 3. Address: P.O. Box 196612 6. API Number: Anchorage, AK 99519-6612 50-029-23493-00-00 7. Property Designation (Lease Number): 8. Well Name and Number: ADL0028262 PBU Z-68 9. Logs (List logs and submit electronic and printed data per 20AAC25.071): 10. Field/Pool(s): PRUDHOE BAY, PRUDHOE OIL 11. Present Well Condition Summary: E C E 1 v t Total Depth measured 10233 feet Plugs measured None feet true vertical 9065.92 feet Junk measured None feet MAY 2 9 2014 Effective Depth measured 10126 feet Packer measured See Attachment feet true vertical 9033.81 feet true vertical See Attachment feet ����� Casing Length Size MD TVD Burst Collapse Structural None None None None None None Conductor 80 20" 94# H-40 47-127 47-127 1530 520 Surface 3236 9-5/8" 40# L-80 44-3280 44-3162.52 5750 3090 Intermediate 9659 T' 26# L-80 44-9703 44-8757.46 7240 5410 Production None None None None None None Liner 685 4-1/2" 12.6# L-80 9525-10210 8611.3 - 9062.61 8430 7500 Perforation depth Measured depth None feet True Vertical depth None feet Tubing (size, grade, measured and true vertical depth) See Attachment See Attachment See Attachment Packers and SSSV (type, measured and true vertical depth) See Attachment See Attachment See Attachment Packer None None None SSSV 12. Stimulation or cement squeeze summary: Intervals treated (measured): Treatment descriptions including volumes used and final pressure: 13. Representative Daily Average Production or Injection Data Oil -Bbl Gas-Mcf Water -Bbl Casing Pressure Tubing Pressure Prior to well operation: 0 0 0 0 0 Subsequent to operation: 0 0 0 0 0 14. Attachments: 15. Well Class after work: Copies of Logs and Surveys Run Exploratory❑ Development 2 Service ❑ Stratigraphic ❑ Daily Report of Well Operations X 16. Well Status after work: Oil Gas I IWDSP GSTOR ❑ WINJ ❑ WAG ❑ GINJ ❑ SUSP ❑✓ SPLUG❑ 17. 1 hereby certify that the foregoing is true and correct to the best of my knowledge. Sundry Number or N/A if C.O. Exempt: N/A Contact Garry Catron Email Garry.Catron(a_BP.Com Printed Name Garry Catron Title PDC PE Signature Phone 564-4424 Date 5/29/2014 V -L' r- &/I I / 1* 6mmCMS MAY 3 0 20` Form 10-404 Revised 10/2012 a C��/� Submit Original Only Packers and SSV's Attachment ADL0028262 SW Name Type MD I TVD Depscription Z-68 PACKER 9409 8517.31 4-1/2" HES TNT Perm Packer Z-68 PACKER 9536 1 8620.25 5" Baker ZXP Top Packer Daily Report of Well Operations ADL0028262 1 5/15/2014 0/50/200 Suspended Well inspection by Chuck Scheve TRIS= ' 41116" GW r D9T'*•* MrOTWOMWITTEM IT, DATE 08/24/13 08/24/13 08/24/13 08/24/13 08/24/13 08/24/13 08/24/13 08/24/13 PRUDHOE BAY LMT WELL: Z-68 PERMT W 2130930 API W: 50-029-23493-00 SEC. 19, T11R R12E, 989' FIS & 2447' FWL BP Exploration (Alaska) DATE 08/24/13 08/24/13 08/24/13 08/24/13 08/24/13 08/24/13 08/24/13 08/24/13 PRUDHOE BAY LMT WELL: Z-68 PERMT W 2130930 API W: 50-029-23493-00 SEC. 19, T11R R12E, 989' FIS & 2447' FWL BP Exploration (Alaska) Suspended Well Site Inspection Form Initial inspection Notify AOGCC Inspectors at least 10 days prior to inspection to allow witness Well Name: Prudhoe Bay Unit Z-68 Field/Pool: Prudhoe Bay/Prudhoe Bay Permit # (PTD): 2130930 API Number: 500292349300 Operator: BP EXPLORATION (ALASKA) INC Date Suspended: Surface Location: Section. 19 Twsp: 11N Range: 12E Nearest active pad or road: W -Pad Take to Location Digital camera Brief well history Latest Sundry or Completion report Past Site Visit documentation Pressure gauges, fittings, tools 8/26/2013 Map showing well location /Aerial photos Wellbore diagram showing downhole condition Site clearance documentation Sample containers for fluids on or near pad Condition of Surface Location AOGCC requires: 1) a description of the condition of the surface location, including discoloration, fluids or sheens visible on the ground or in any nearby water, 2) photographs showing the condition of the location surrounding the well General location condition: Good snow melt Pad or location surface: Good Location cleanup needed: No Pits condition: N/A Surrounding area condition: Good Water/fluids on pad: Snow melt Discoloration, Sheens on pad, pits or water: No Samples taken: No Access road condition: good Photographs taken (# and description): No Condition of Wellhead AOGCC requires: 1) a description of the condition of the wellhead, 2) well pressure readings, where practicable, 3) photographs showing the wellhead condition Wellhead/tree/valve description, condition: FMC tree, No SSV or flowline. All other valves in good working order Cellar description; condition, fluids: Snow no sheen Rat Hole: No Wellhouse or protective barriers: Cattle guard Well identification sign: yes Tubing Pressure (or casing if no tubing): 0 psi Annulus pressures: IA = 50 psi OA= 200 psi Wellhead Photos taken (# and description): (6) total (1) Id sign (1) back of tree (2) front of tree (1) left side of tree (1) right side of tree Work Required: None Operator Rep (name and signature) AOGCC Inspector: Chuck Scheve Inspection Date: 5/15/2014 Time of arrival: 10:20 AM Site access method: Truck Jack Disbrow utne,r V servers: AOGU Notice Date: Time of Departure: Kevin Parks 5/14/2014 10:40 AM I r`.'.. m r 0 n r - A-- P -d .- _a i - A-- P -d .- _a i WELL: n[� M- M- 25 cz F -I W -A WELL: Z-68 OWNER Prudhoe Bay Unit OPERATOR BP Exploration (Alaska) Inc. API NUMBER 50-029-23493-00-00 SUR. LOCATION NE 1/4, Sec. 19, T11N, R12E DRILLING PERMIT 213-093 _Mawr m rrtA L L Al • STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION Suspended Well Inspection Report Date Inspected: 05/15/14 Date AOGCC Notified: Inspector: Chuck Scheve Operator: Well Name: Z-68 Oper. Rep: PTD No.: 2130930 Oper. Phone: Location Verified? No Oper. Email: If Verified, How? IA 50 Onshore / Offshore: Onshore BPX Kevin Parks 659-5766 Suspension Date: 01/30/14 Date AOGCC Notified: 05/14/14 Sundry No.: Well Completion Rpt Type of Inspection: Initial Wellbore Diagram Avail.? Yes Well Pressures (psi): Tubing 0 Photos Taken? No IA 50 OA 200 Condition of Wellhead: New, No flow line or artificial lift line. Double manual valves and tree cap. Condition of Surrounding Surface Good Location: Follow Up Actions none Needed: Attachments: none EWED BY: Supry PLB 09/2010 2014-0515_Suspend_PBU_Z-68_cs.xlsx STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION WELL COMPLETION OR RECOMPLETION REPORT AND LOGAOGCC 1 a. Well Status: ❑ Oil ❑ Gas ❑ SPLUG ❑ Other ❑ Abandoned J@ Suspended 1 20AAC 25.105 20AAC 25.110 ❑ GINJ ❑ WINJ ❑ WAG ❑ WDSPL ❑ Other No. of Completions Zero b. Well Class ❑ Exploratory ❑ Stratigraphic ® Development ❑ Service 2. Operator Name: BP Exploration (Alaska) Inc. 5. Date Comp., Susp., or Aband.: 12. 8/26/2013 Permit to Drill Number: 213-093 , - 3. Address: P.O. Box 196612, Anchorage, Alaska 99519-6612 6. Date Spudded: 13. 7/27/2013 API Number: 50-029-23493-00-00 4a. Location of Well (Governmental Section): Surface: 4291' FSL, 2507' FEL, Sec. 19, T11 N, R12E, UM • Top of Productive Horizon: FSL, 645' FWL, Sec. 20, T11 N, R12E, UM Total Depth: 3374' FSL, 925' FWL, Sec. 20, T11N, R12E, UM 7. Date T.D. Reached: 14. 8/19/2013 Well Name and Number: PBU Z-68 8. KB ft above MSL): 15. ( ) 102.82' � GL (ft above MSL): 55.9' Pool(s) Field / Pool s) Prudhoe Bay/ Prudhoe Bay , 9. Plug Back Depth (MD+TVD) 10126' • 9034' - 4b. Location of Well (State Base Plane Coordinates, NAD. Surface: x- 600171 y- 5959100 . Zone- ASP4 TPI: x- 603336 y- 5958339 Zone- ASP4 Total Depth: x- 603618 y- 5958230 Zone- ASP4 10. Total Depth (MD+TVD) 16. 10233' ' 9066' Property Designation: ADL 028262 11. SSSV Depth (MD+TVD) None 17. Land Use Permit: 19. Water depth, if offshore: N/A ft MSL 20. Thickness of Permafrost (TVD): 1801' 18. Directional Survey: Yes []No ® (Submit electronic and printed information per 20 AAC 25.050) 21. Logs Obtained (List all logs here and submit electronic and printed information per 20 AAC 25.071): MWD / GR / RES, MWD / GR / RES / DEN / NEU, MWD, USIT, GR / RES / NEU / DEN 22. Re-Drill/Lateral Top Window MD/TVD: N/A 23. CASING, LINER AND CEMENTING RECORD SETTING DEPTH MD SETTING DEPTH TVD HOLE AMOUNT CASING WT. PER FT. GRADE TOP BOTTOM TOP BOTTOM SIZE CEMENTING RECORD PULLED 20" 94# H-40 47' 127' 47' 127' 42" 260 sx Arctic Set Approx.) 9-5/8" 40# L-80 44' 3280' 44' 3163' 12-1/4" 1570 sx LiteCrete, 408 sx Class 'G', Top Job: 852 sx LiteCrete 7" 26# L-80 44' 9703' 44' 8757' 8-3/4" 597 sx LiteCrete 101 sx Class 'G' 4-1/2" 12.6# 13Cr80 9525' 10210' 1 8611 9063' 6-1/8" 95 sx Class'G' 24. Open to production or injection? ❑ Yes ® No If Yes, list each interval open (MD+TVD of Top & Bottom; Perforation Size and Number): 25. TUBING RECORD .SIZE DEPTH SET (MD) PACKER SET MD /TVD) 4-1/2", 12.6#, 13Cr85 9531' 9409'/ 8517' 26. ACID, FRACTURE, CEMENT SQUEEZE, ETC. WAS HYDRAULIC FRACTURING USED DURING COMPLETION?[] Yes ® No DEPTH INTERVAL (MD) AMOUNT AND KIND OF MATERIAL USED 2100' Freeze Protect w/ 71 Bbls Diesel 27. PRODUCTION TEST Date First Production Not on Production Method of Operation (Flowing, Gas Lift, etc N/A Date of Test Hours Tested Production For Test Period OIL -BBL: GAS -MCF: WATER -BBL: CHOKE SIZE: GAS -OIL RATIO: Flow Tubing Press. Casing Press: Calculated 24 -Hour Rate OIL -BBL: GAS -MCF: WATER -BBL: OIL GRAVITY -API (CORR): 28. CORE DATA Conventional Core(s) Acquired? []Yes ® No Sidewall Core(s) Acquired? ❑ Yes ® No ' If Yes to either question, list formations and intervals cored (MD+TVD of top and bottom of each), and summarize lithology and presence of oil, gas or water (submit separate sheets with this form, if needed). Submit detailed descriptions, core chips, photographs and laboratory analytical results per 20 AAC 250.071. None RMUS5 MAR 2 0 rnl Form 10-407 Revised 10!2012 ,`��1 CONTINUED ON REVERSE 6�/�`� S,u�f �Unglnal Only n� 29. GEOLOGIC MARKERS (List all formations and, rs encounter 30. FORMATION TESTS NAME MD TVD Well Tested? Ej es ® No Permafrost Top 47' 47' If yes, list intervals and formations tested, briefly summarizing test Permafrost Base 1876' 1848' results. Attach separate sheets to this form, if needed, and submit detailed test information per 20 AAC 25.071. Ugnu 3320' 3200' None Schrader Bluff N 4606' 4377' Schrader Bluff O 4817' 4561' Base of Schrader Bluff 5221' 4917' HRZ 6990' 6476' Kalubik 7262' 6715' Kuparuk C 7282' 6733' LCU / Kuparuk A 7326' 6771' Miluveach 7385' 6823' Kingak 8233' 7545' Sag River 9698' 8753' Shublik 9731' 8780' Eileen 9840' 8866' Ivishak - Zone 4 9882' 8896' Zone 3 10096' 9017' Formation at Total Depth: Zone 3 1 1 10096' 9017' 31. List of Attachment Summary of Daily Drilling Reports, LOT / FIT Summary, Well Schematic Diagram, Surveys, Cement Reports 32. 1 hereby certify that the foregoing is true and correct to the best of my knowledge. Contact: John Rose, 56645271 Printed Name: Joe Lastufkal /� Email Title John.G.Rose@bp.com Drilling Technologist Phone 564-4091 Date: 112-4114- INSTRUCTIONS 1Za/14- INSTRUCTIONS General: This form is designed for submitting a complete and correct well completion report and log on all types of lands and leases in Alaska. Submit a well schematic diagram with each 10-407 well completion report and 10-404 well sundry report when the downhole well design is changed. Item 1 a: Classification of Service Wells: Gas Injection, Water Injection, Water -Alternating -Gas Injection, Salt Water Disposal, Water Supply for Injection, Observation, or Other. Multiple completion is defined as a well producing from more than one pool with production from each pool completely segregated. Each segregated pool is a completion. Item 4b: TPI (Top of Producing Interval). Item 8: The Kelly Bushing and Ground Level elevation in feet above mean sea level. Use same as reference for depth measurements given in other spaces on this form and in any attachments. Item 13: The API number reported to AOGCC must be 14 digits (ex: 50-029-20123-00-00). Item 20: Report true vertical thickness of permafrost in Box 20. Provide MD and TVD for the top and base of permafrost in Box 28. Item 23: Attached supplemental records for this well should show the details of any multiple stage cementing and the location of the cementing tool. Item 24: If this well is completed for separate production from more than one interval (multiple completion), so state in item 1, and in item 23 show the producing intervals for only the interval reported in item 26. (Submit a separate form for each additional interval to be separately produced, showing the data pertinent to such interval). Item 27: Method of Operation: Flowing, Gas Lift, Rod Pump, Hydraulic Pump, Submersible, Water Injection, Gas Injection, Shut -In, or Other (explain). Item 28: Provide a listing of intervals cored and the corresponding formations, and a brief description in this box. Submit detailed description and analytical laboratory information required by 20 AAC 25.071. Item 30: Provide a listing of intervals tested and the corresponding formation, and a brief summary in this box. Submit detailed test and analytical laboratory information required by 20 AAC 25.071. Form 10-407 Revised 10/2012 Submit Original Only TREE= 4-1/16" CNV MD WELLHEAD = FMC SLIP LOC ACTUATOR = ME60 ELECTRIC TYPE INITIAL KB. ELB 102.82' LATCH INITIAL. BF. ELB 58.9' DATE KOP 374' 20" INSULATES - 3221 ' Max Angle = CONDUCTOR 94#, —(Type), D= Datum MD= "-88-00 Datum TV D = 19.124' 08/24/13 7 4955 �9-5/8" CSG, 40#, L-80 BTC, D = 8.835" 3280' TOP OF CEvIHNT (USIT LOG ON 08/23/13) (-- 3970' Minimum ID = 3.813" @ 1986' 4-1/2" HES X NIPPLE Z-68 SAFE JTES: GHROMt TBG 8 LNR� ANGLE > 70° @ 10097"`• 1986' 1-i4-1/2" HES X NIP, D= 3.813" ST MD TVD DEV TYPE VLV LATCH I PORT DATE 8 3342 3221 19 KBG4-5 DMY BK 0 08/24/13 7 4955 4682 29 KBG4-5 DCK-2 BEK - 08/24/13 6 5655 5300 29 KBG4-5 DMY BK 0 08/24/13 5 6437 5989 28 KBG2 DMI' SBK-2C 0 08/24/13 4 7090 6564 28 KBG2 DMY SBK-2C 0 08/24/13 3 7623 7029 30 KBG2 DMY SBK-2C 0 08/24/13 2 8322 7619 34 KBG2 DMY SBK-2C 0 08124/13 1 9345 $465 35 KBG2 DMY SBK-2C 0 08/24/13 9380' 4-1/2" HES X NP, D = 3.813" 9409 J-7" X 4-1/2" HES TINT PKR D = 3.856" 4-1/2" HES X NP, D = 3.813" 9515' 4-1/2" HES X NIP, U=- 3.813" 9525' 17' X 5" BKR HRD-E ZXP LTP w /11' TACK, D 4-1/2" TBG, 12.6#, 13CR-85 VAMTOP, 9530' 9531' -F4-1/2-WL—EG. D=4.00 .0152 bpf, D - 3.958" -{E-MD TT NOT LOGGED 7" CSG, 26 #, L-80 VAM TOP HC 9703' 9549' T X 5" BKR FLIX-LOCK HGR D = 4.32' 0383 bpf. D = 6.276 95�5" X 4-1/2" XO BUSHNG, D =3-92' 4-1/2" LW 12.6#, 13CR-80 HYD 521 -� 10082' XO TO L-80 VAM TOP PERFORATION SUMMARY REF LOG: A NGLE A T TOP PERF: ` Q Note: Refer to PPoduction DB for historical pert data SIZE SPF INTERVAL Opn/ Sqz SHOT I SQZ PBTD 10126' 4-1 t2" LNR 12.6#, 13CR-80 HYD 521 1021V 0152 bpf, D = 3.958" DATE REV BY COMMENTS DATE REI/ BY COMM34TS 08/26113 PKR273 INITIALCOMPLETION 08/27/13 PJC FINAL UPDATES FOR RIG 09/11/13 JGR/PJC CMT TOP/FINAL ODE APPROVAL PRLUHOE BAY LXNIT WELL: Z-68 PERNIr No: `2130930 API No: 50-029-23493-00 SEC. 19, T11 N, R12E, 989' FNL 8 2447' FWL BP Exploration (Alaska) Page 1 of 1 BP AMERICA LOT / FIT Summary Well Name: Z-68 Surface Leak Off Test Test Test Depth Test Depth AMW Pressure Pressure EMW Date Type (TMD -Ft) (TVD -Ft) (ppg) (psi) (BHP) (psi) (ppg) 08/03/13 LOT 3,280.00 3,162.00 9.20 1,467.00 2,978.19 18.13 08/12/13 FIT 9,702.00 8,756.65 8.60 1,090.00 5,002.07 11.00 Page 1 of 1 North America - ALASKA - BP Operation Summary Report Common Well Name: Z-68 AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: 8/21/2013 X3 -013H1 -C: DRILL (8,820,870.00) Project: Prudhoe BBY Site: PB Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: 8/26/2013 Rig Contractor: PARKER DRILLING CO. UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102 Date From - To 7/25/2013 00:00 - 04:30 04:30 0730 3.00 0730 09:30 2.00 09 30 12:00 2.50 12:00 1600 4.00 16:00 18:30 2.50 18:30 21'00 2.50 21:00 - 21:30 0.50 >ft (above Mean Sea Level) Page 1 of 29 Task Code NPT NPT Depth Phase Description of Operations — (usft) RIGID P PRE BEGIN DON EVENT WITH PARKER 273 AT 00:00 ON 7/25/2013 GENERAL RIG DOWN OPERATIONS ON Z-114 DISCONNECT INTERCONNECTS BETWEEN MODULES, PULL CUTTINGS BOX AWAY FROM RIG SECURE OFFLINE ST -80, STABBING BOARD, & IRON DERRICKMAN IN STORAGE POSITION - PREPARE RIG FLOOR FOR SKIDDING PERFORM DERRICK INSPECTION SECURE TOP DRIVE, DISCONNECT BLOCKS AND BRIDLE UP TO LOWER MAST RIGD P PRE MOVE ROOF WALKWAYS. PERFORM FINAL WALKDOWNS. SKID CATTLE CHUTE AND RIG FLOOR INTO RIG _MOVE POSITION. RIGD P PRE LOWER MAST - FINAL SLACKOFF WEIGHT ABOVE STORAGE RACK = 408 KLBS. MOB P PRE SEPARATE UTILITY MODULE AND MUD MODULE FROM DRILL MODULE. BACK DRILL MODULE OFF OF WELL. STAGE ALL THREE MODULES ON PAD. MOB P PRE MOVE UTILITY MODULE AND DRILL MODULE TO Z-68 WELL LOCATION (OPPOSITE CORNER OF PAD FROM Z-114) MOB P PRE CH2M HILL CRANE ONSITE TO LIFT DUMMY WELLHOUSE OFF OF Z-114. PARKER LOADER MOVE WELLHOUSE AND SPOT OVER Z-68 CONDUCTOR. MOB P PRE SPOT/CENTER DRILL MODULE OVER Z-68. - 21:00 - RIG ON LOCATION WHEN FIRST MODULE SPOTTED OVER WELL. -- — —- MOB P j PRE SPOT UTILITY MODULE UP AGAINST DRILL MODULE. - ELECTRICIAN ONSITE TO RIG UP CONNECTOR 21:30 00:00 2.50 MOB P PRE MOVE MUD MODULE DOWN PAD AND SPOT UP AGAINST DRILL MODULE 7/26/2013 00:00 01'00 1.00 MOB P PRE COMPLETE MATING MUD MODULE UP TO DRILL MODULE. 01:00 02:00 1.00 RIGU P PRE RAISE MAST PICKUP WEIGHT OFF STORAGE RACK= 528 --- - -- - - KLBS 02:00 - 03:30 1.50 RIGU P PRE SHIM UTILITY AND MUD MODULES. INSTALL 1 WALKWAYS AND ROOF CAPS. 03:30 - 05:00 1.50 RIGU P PRE I SKID RIG FLOOR AND CATTLE INTO DRILLING POSITION. RAISE PIPE CAT. Printed 9/9/2013 9:53:30AM Printed 9/9/2013 9:53:30AM North America - ALASKA - BP Page 2 of 29 Operation Summary Report Common Well Name. Z-68 AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: 8/21/2013 X3 -013H1 -C: DRILL (8,820,870.00 ) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: 8/26/2013 Rig Contractor: PARKER DRILLING CO. UWL 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Date From - To Hrs Task Cade NPT NPT Depth Phase Description of Operations (hr) (usft) 05:00 - 13:00 8.00 BOPSUR P PRE NIPPLE UP HIGH PRESSURE RISERS AND 21-1/4" ANNULAR DIVERTER. NIPPLE UP FLOW RISER AND INSTALL FLOWLINE. SIMOPS: INSTALL MUD LINES BETWEEN MODULES BRIDLE DOWN, SECURE LINES IN DERRICK, PIN TORQUE TUBE - RIG UP BLOCKS TO TOP DRIVE AND PREPARE DERRICK 13:00 17:30 4.50 RIGU P PRE GENERAL RIG UP OPERATIONS - RIG UP IRON DERRICKMAN AND FORUM CRANE INSTALL MOUSE HOLES COMPLETE RIGGING UP ALL FLOWLINE AND ELECTRAL LINES BETWEEN MODULES - ADD TWO 40' SECTIONS ONTO DIVERTER LINE FOR PROPER CLEARANCE - CHANGEOUT ALL VALVES AND SEATS ON MUD PUMPS SPOT CUTTINGS BOX AND PREPARE PITS TAKE ON 8.6 PPG DRILPLEX SPUD MUD 17:30 19:00 1.50 BOPSUR P PRE PERFORM DIVERTER FUNCTION TEST. WITNESS WAIVED BYAOGCC REPRESENTATIVE JEFF TURKINGTON. PERFORM ACCUMULATOR DRAWDOWN TEST. - KINFE VALVE OPENING TIME = 24 SEC, DIVERTER CLOSING TIME = 37 SEC (PASS, SEE ATTACHED STATE DOCUMENTATION FORM) 19:00 20:00 1.00 RIGU P PRE ACCEPT PARKER 273 RIG AT 19:00 ON 7/26/2013. GENERAL RIG UP OPERATIONS TAKE ON 8.6 PPG DRILPLEX SPUD MUD CONFIRM ALIGNMENT OF TOP DRIVE WITH JOINT OF PIPE IN ROTARY TABLE - INSTALL ROOF WALKWAYS 20:00 - 22:30 2.50 RIGU P PRE LOAD BHA INTO PIPE BARN AND ONTO RIG FLOOR. MAKEUP FIRST STAND OF DRILL COLLARS AND RACK BACK. - CONTINUE TO TAKE ON 8.6 PPG DRILPLEX SPUD MUD 22:30 23:00 0.50 RIGU P PRE HOLD RIG EVACUATION/DIVERTER (D3) DRILL AND WITH MASSIE CREW. 23:00 00:00 1.00 RIGU P PRE BUILD FIRST 43' OF DRILLING BHA ON RIG FLOOR AND CONTINUE LOADING MUD IN PITS. 7/27/2013 00:00 02:30 2.50 RIGU P PRE COMPLETE MAKING UP FIRST 43' OF DRILLING BHA. PICKUP AND RACK BACK OF 6 STANDS 4" HWDP - CONTINUE LOADING 8.6 PPG DRILPLEX MUD IN PITS - CALIBRATE BLOCK HEIGHT WITH SLB MWD. 02:30 03:00 0.50 RIGU P PRE HOLD RIG EVACUATION/DIVERTER (D3) DRILL, AAR AND PRE -SPUD WITH RUNYON CREW. 03:00 05:30 2.50 RIGU P PRE PICKUP REMAINING 4 STANDS 4" HWDP. LOAD AND TREAT REMAINDER OF FIRST 870 BBLS 8.5 PPG DRILPLEX SPUD MUD. Printed 9/9/2013 9:53:30AM North America - ALASKA - BP Operation Summary Report Page 3 of 29 Common Well Name: Z-68 AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date 8/21/2013 X3 -013H1 -C: DRILL (8,820,870.00) Project: Prudhoe Bay Site: PBZ Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: 8/26/2013 Rig Contractor: PARKER DRILLING CO. UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) - -- - - i0_5:30 (usft) - 06:00 0.50 RIGU7 P PRE .RIG UP E -LINE AND LOAD GYRODATA TOOLS TO RIG FLOOR 06:00 - 07:00 1.00 RIGU P PRE RUN IN HOLE WITH 12-1/4" DRILLING ASSEMBLY FROM SURFACE TO TAG ICE IN CONDUCTOR AT 50' MD. FILL SYSTEM. I PERFORM LEAKTIGHT PRESSURE TEST ON SURFACE LINES. CLEANOUT CONDUCTOR FROM 50' MD 12-1/4" NEW HUGHES VM -3 MILL TOOTH SLB POWERPAKA962SP PDM (1.83° BEND) W/ NON -PORTED FLOAT, UBHO SUB 0700 1430 7.50 DRILL P SURF SPUD Z-68 WITH PARKER 273 AT 07:00 ON 7/27/2013. DIRECTIONAL DRILL 12-1/4" SURFACE HOLE FROM 127' MD TO 509' MD (382' IN 7.5 HRS = 51 FPH WITH CONNECTIONS AND SURVEYS) - 450 GPM, 600 PSI ON, 500 PSI OFF, 40 RPM, 151 BIT RPM, 1-2KFT-LBS TORQUE ON, 1KFT-LBS TORQUE OFF - INSTANTANEOUS ROTATING ROP = 90-120 FPH, SLIDING = 60-90 FPH GYRO SURVEY EVERY STAND -ART= 2.2 HRS, AST = 1.36 HRS, ADT = 3.56 HRS WIPE HOLE 30 FT PRIOR TO CONNECTIONS, FULL PUMP RATE UP, PUMPS OFF DOWN MW IN/OUT = 8.6/ 8.8 PPG i I GRAVEL AND OCCASIONAL WOOD IN CUTTINGS AT SHAKERS 14 30 1530 1.00 DRILL P SURF FLOWCHECK WELL PRIOR TO PULLING OFF BOTTOM (STATIC). PULL OUT OF HOLE WITH 12-1/4" DRILLING ASSEMBLY FROM 509' MD TO BHA AT 144'M D. - - -- 1530 17.00 1.50 DRILL P SURF RACK BACK 12-1/4" BHAAND INSPECT BIT (GRADE 1 -1 -IN GUAGE). ELECTTO RE -RUN SAME BIT. DIAL DOWN MOTOR BEND FROM - - -- -' 1.83° TO 1.5°. 17:00 - 19:30 2.50 DRILL P SURF MAKEUP MWD TOOLS AND RUN IN HOLE WITH 12-1/4" DRILLING ASSEMBLY FROM SURFACE TO PREVIOUSLY DRILLED DEPTH OF 509' MD. WASH DOWN FINAL STAND THROUGH 30' FILL. 12-1/4" NEW HUGHES VM -3 MILL TOOTH SLB POWERPAKA962SP PDM (1.83° BEND) W/ NON -PORTED FLOAT, UBHO SUB DIR/GR/RES MWD TOOLS Printed 9/9/2013 9:53:30AM North America - ALASKA - BP Operation Summary Report Page 4 of 29 Common Well Name: Z-68 AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: 8/21/2013 X3 -013H1 -C: DRILL (8,820,870.00) Project: Prudhoe Bay Site. PB Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: 8/26/2013 Rig Contractor: PARKER DRILLING CO. UW: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 19:30 21:30 2.00 DRILL P SURF DIRECTIONAL DRILL 12-1/4" SURFACE HOLE FROM 509' MD TO 567' MD WITH GYRO SURVEYS. - 500 GPM, 1100-1150 PSI ON, 1025 PSI OFF, 40 RPM, 151 BIT RPM, 3 KFT-LBS TORQUE ON, 1 KFT-LBS TORQUE OFF - INSTANTANEOUS ROTATING ROP = 130 FPH, SLIDING = 125 FPH - ART = 0.40 HRS, AST = 0.55 HRS, ADT = 0.95 HRS - WIPE HOLE 30 FT PRIOR TO CONNECTIONS, FULL PUMP RATE UP, PUMPS OFF DOWN MW IN/OUT = 8.7 PPG, LSYP = 60 GYRO SURVEY EVERY STAND UNTIL 567' MD, 2 CLEAN MWD SURVEYS OBTAINED BY 567' MD. RELEASE GYRO SERVICES AT 21:30 21:30 22:30 1.00 DRILL P SURF RIG DOWN HALLIBURTON E -LINE AND GYRODATA. 2230 00:00 1.50 DRILL P SURF DIRECTIONAL DRILL 12-1/4" SURFACE HOLE FROM 567' MD TO 717' MD AT MIDNIGHT ( 150' IN 1.5 HOURS = 100 FPH WITH CONNECTIONS) - SAME DRILLING PARAMETERS AS 19:30-21:30 TIME INTERVAL. - ART = 0.79 HRS, AST = 0.25 HRS, ADT = 1.04 HRS MWD SURVEY EVERY STAND GRAVEL AND OCCASIONAL WOOD IN CUTTINGS AT SHAKERS - FLOW PADDLE DEFEATED 127' MD TO 717' MD (ALLOWABLE PER PTD) 7/28/2013 00:00 15:00 15.00 DRILL P SURF DIRECTIONAL DRILL 12-1/4" SURFACE HOLE FROM 717' MD AT MIDNIGHT TO 1790' MD, 100' ABOVE BASE OF PERMAFROST (1073' IN 15 HRS = 72 FPH WITH CONNECTIONS) - 500 GPM, 1050-1550 PSI ON, 950-1250 PSI OFF, 40 RPM, 151 BIT RPM, 3-5 KFT-LBS TORQUE ON, 2-3.5 KFT-LBS TORQUE OFF, 25-30 KLBS WOB - INSTANTANEOUS ROTATING ROP = 125-175 FPH, SLIDING = 60-100 FPH WIPE HOLE 30 FT PRIOR TO CONNECTIONS MW IN/OUT = 8.7 PPG MIXTURE OF GRAVEL AND CLAY AT SHAKERS, NO INDICATIONS OF RUNNING GRAVELS - SLIDE 40'-70' PER STAND TO BUILD INC FROM 30 TO 230 AND TURN AZI FROM 440 TO 174° - ADT = 10.33 HRS, ART = 3.75 HRS, AST = 6.58 HRS Printed 9/9/2013 9:53:30AM MD _ NO HOLE ISSUES ENCOUNTERED 18:30 - 19:30 1.00 DRILL P SURF PLANNED WIPER TRIP FROM BASE OF PERMAFROST: RUN IN HOLE WITH 12-1/4" DRILLING ASSEMBLY ON ELEVATORS FROM JARS AT 291' MD TO PREVIOUSLY DRILLED DEPTH OF 1790' MD. NO FILL ENCOUNTERED ON TRIP IN HOLE 19 30 00:00 4.50 DRILL P SURF DIRECTIONAL DRILL 12-1/4" SURFACE HOLE FROM 1790' MD TO 2454' MD AT MIDNIGHT (664' IN 4.5 HRS = 148 FPH WITH CONNECTIONS) 600-650 GPM, 1950-2650 PSI ON, 1850-2250 PSI OFF, 80 RPM, 214-224 BIT RPM, 6-8 KFT-LBS TORQUE ON, 3-4 KFT-LBS TORQUE OFF, WOB = 25-32 KLBS INSTANTANEOUS ROTATING ROP = 300-350 FPH, SLIDING = 200-250 FPH WIPE HOLE 30 FT PRIOR TO EVERY CONNECTION MW IN/OUT = 8.9 PPG BPERM: 1890' MD, 1861' TVD, 13' LOW VS PROGNOSIS, NO INDICATIONS OF HYDRATES BELOW BASE OF PERMAFROST - PERFORM 15'-30' MAINTENANCE SLIDES EACH STAND DURING TANGENT ADT = 2.33 HRS, ART = 1.5 HRS, AST = 0.83 HRS - SIMOPS: BUILD STANDS 4" DRILLPIPE 7/29/2013 00:00 01.00 1.00 DRILL P SURF RACK BACK ONE STAND. CIRCULATE AND CONDITION MUD. Printed 9/9/2013 9:53 30AM North America - ALASKA - BP Page 5 of 29 Operation Summary Report Common Well Name: Z-68 AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: 8/21/2013 X3 -013H1 -C: DRILL (8,820,870.00 ) Site: PB Z Pad Project: Prudhoe Bay Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: 8/26/2013 Rig Contractor: PARKER DRILLING CO. UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Date From - To Hrs Task Code 1 NPT NPT Depth Phase Description of Operations (hr) (usft) 15:00 17:00 2.00 DRILL P SURF PLANNED WIPER TRIP FROM BASE OF PERMAFROST: BACKREAM OUT OF THE HOLE WITH 12-1/4" DRILLING ASSEMBLY FROM 1790' MD TO 1317' MD WHILE CIRCULATING HOLE CLEAN WITH 3 BOTTOMS UP. I - 500 GPM, 1280 PSI, 80 RPM, 3 KFT-LBS TORQUE INITIAL PU WEIGHT OFF BOTTOM = 90 KLBS, SO = 80 KLBS FLOWCHECK WELL PRIOR TO PULLING OFF _ BOTTOM (STATIC) 1700 18:30 1.50 DRILL P SURF PLANNED WIPER TRIP FROM BASE OF PERMAFROST: PULL OUT OF THE HOLE WITH 12-1/4" DRILLING ASSEMBLY ON ELEVATORS FROM 1317' MD TO JARS AT 291' MD _ NO HOLE ISSUES ENCOUNTERED 18:30 - 19:30 1.00 DRILL P SURF PLANNED WIPER TRIP FROM BASE OF PERMAFROST: RUN IN HOLE WITH 12-1/4" DRILLING ASSEMBLY ON ELEVATORS FROM JARS AT 291' MD TO PREVIOUSLY DRILLED DEPTH OF 1790' MD. NO FILL ENCOUNTERED ON TRIP IN HOLE 19 30 00:00 4.50 DRILL P SURF DIRECTIONAL DRILL 12-1/4" SURFACE HOLE FROM 1790' MD TO 2454' MD AT MIDNIGHT (664' IN 4.5 HRS = 148 FPH WITH CONNECTIONS) 600-650 GPM, 1950-2650 PSI ON, 1850-2250 PSI OFF, 80 RPM, 214-224 BIT RPM, 6-8 KFT-LBS TORQUE ON, 3-4 KFT-LBS TORQUE OFF, WOB = 25-32 KLBS INSTANTANEOUS ROTATING ROP = 300-350 FPH, SLIDING = 200-250 FPH WIPE HOLE 30 FT PRIOR TO EVERY CONNECTION MW IN/OUT = 8.9 PPG BPERM: 1890' MD, 1861' TVD, 13' LOW VS PROGNOSIS, NO INDICATIONS OF HYDRATES BELOW BASE OF PERMAFROST - PERFORM 15'-30' MAINTENANCE SLIDES EACH STAND DURING TANGENT ADT = 2.33 HRS, ART = 1.5 HRS, AST = 0.83 HRS - SIMOPS: BUILD STANDS 4" DRILLPIPE 7/29/2013 00:00 01.00 1.00 DRILL P SURF RACK BACK ONE STAND. CIRCULATE AND CONDITION MUD. Printed 9/9/2013 9:53 30AM North America - ALASKA - BP Operation Summary Report Page 6 of 29 Common Well Name: Z-68 AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: 8/21/2013 X3 -013H1 -C: DRILL (8,820,870.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: 8/26/2013 Rig Contractor. PARKER DRILLING CO. UN: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Date From - To Hrs - - — - (hr) - Task Code NPT NPT Depth Phase Description of Operations _ . - (usft) - �0100 - 09:00 8.00 DRILL P SURF DIRECTIONAL DRILL 12-1/4" SURFACE HOLE FROM 2454' MD TO SECTION TOTAL DEPTH IN SVt SAND AT 3297' MD 3179' TVD (843' IN 9 HRS = 94 FPH WITH CONNECTIONS) 650 GPM, 2750-3000 PSI ON, 2450-2600 PSI i OFF, 80 RPM, 224 BIT RPM, 6-7.5 KFT-LBS TORQUE ON, 3.5-4.5 KFT-LBS TORQUE OFF, WOB = 25-30 KLBS INSTANTANEOUS ROTATING ROP = 225-275FPH, SLIDING = 75-100 FPH WIPE HOLE 30 FT PRIOR TO EVERY CONNECTION - MW IN/OUT = 9.2 PPG - MINOR HYDRATES NOTED 3118' MD - 3210' MD IN SV1 INC/AZI AT TOTAL DEPTH = 191/175° = ADT = 4.15 HRS, ART = 3.19 HRS, AST = 0.96 HRS, TOTAL BIT HOURS = SIMOPS: OPEN AND INSPECT BOP RAMS (HIGH GOR WELL), PROACTIVELY CHANGEOUT UPPER DOOR SEALS. CONTINUE TO MAKEUP 4" DRILLPIPE STANDS �- OFFLINE. 09:00 - 11:30 2.50 DRILL P iSURF�PLANNED WIPER TRIP TO BASE OF PERMAFROST: BACKREAM OUT OF HOLE WITH 12-1/4" DRILLING ASSEMBLY FROM SECTION TD AT 3297' MD TO 2920' MD WHILE CIRCULATING 3 BOTTOMS UP. INITIAL PU WEIGHT OFF BOTTOM = 127 KLBS, SO = 92 KLBS, ROT = 102 KLBS 1- 650 GPM, 2580 PSI, 100 RPM, 4 KFT-LBS TORQUE - MONITOR WELL PRIOR TO PULLING OUT OF HOLE (STATIC) 11 30 1530 4.00 DRILL P SURF PLANNED WIPER TRIP TO BASE OF PERMAFROST: UNSUCCESSFULLY ATTEMPT TO PULL OUT OF HOLE ON ELEVATORS. BACKREAM OUT OF HOLE WITH 12-1/4" DRILLING ASSEMBLY FROM 2290' MD TO 1500' MD (390' ABOVE SPERM). - 650 GPM, 2000-2350 PSI, 100 RPM, 4-5 KFT-LBS TORQUE 15:30 - 16:30 1.00 DRILL P SURF PLANNED WIPER TRIP TO BASE OF PERMAFROST: TRIP IN HOLE WITH 12-1/4" DRILLIN GASSEMBLY ON ELEVATORS FROM 1500' MD TO HOLE SECTION TD AT 3297' MD. CIRCULATE NUT PLUG SWEEP ROUND TRIP. SWEEP RETURN TIMING AT SHAKERS INDICATES HOLE WITH 10% WASHOUT -NO HOLE ISSUES OR FILL ENCOUNTERED 16:30 - 18:30 2.00 DRILL P SURF BACKREAM OUT OF HOLE WITH 12-1/4" DRILLING ASSEMBLY FROM SECTION TD AT 3297' MD TO 2920' MD WHILE CIRCULATING 3 BOTTOMS UP. - INITIAL PU WEIGHT OFF BOTTOM = 127 KLBS, SO = 92 KLBS, ROT = 103 KLBS 650 GPM, 2580 PSI, 100 RPM, 3 KFT-LBS TORQUE, Printed 9/9/2013 9 53 30A North America - ALASKA - BP Operation Summary Report Page 7 of 29 Common Well Name: Z-68 AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: 8/21/2013 X3 -013H1 -C: DRILL (8,820,870.00 ) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: PARKER 273 Spud Daterrime: 7/27/2013 7:00:OOAM Rig Release: 8/26/2013 Rig Contractor: PARKER DRILLING CO. UWL 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Date From - To Hrs Task Code ! NPT NPT Depth Phase Description of Operations _ (usft) - � 18:30 19:30 1.00 DRILL P 1 - I SURF OF — PULL OUT OF HOLE WITH 124/4" DRILLING ASSEMBLY ON ELEVATORS FROM 2920' MD TO BHAAT 938' MD, RACKING BACK 4" DRILLPIPE NO HOLE ISSUES ENCOUNTERED, HOLE TAKING CORRECT FILL 19:30 23:30 4.00 DRILL P SURF RACK BACK HWDP AND (1) STAND DRILL COLLARS. LAYDOWN 12-1/4" DRILLING ASSEMBLY. STABILIZERS IN GAUGE. GRADE NEW HUGHES VM -3 1-6-2/16" OUT OF GUAGE. 23:30 00:00 0.50 CASING P SURF CLEAN AND CLEAR RIG FLOOR FOR RUNNING CASING 7/30/2013 00:00 04:00 4.00 CASING P SURF RIG UP TO RUN 9-5/8" CASING. HOLD PJSM WITH RIG TEAM ABOUT RUNNING CASING. VOLANT TOOL WITH LONG BALES AND BALE EXTENSIONS, SIDE DOOR ELEVATORS -PERFORM DUMMY RUN WITH LANDING JOINTAND 9-5/8" CASING HANGER. 04:00 15:30 11.50 CASING P SURF RUN 9-5/8", 40#, L-80, BTC SURFACE CASING FROM SURFACE TO PLANNED LANDING DEPTH AT 3287' MD (10' OFF BOTTOM) WITH VOLANT TOOL (NOTE: SEE CEMENT OPERATIONS DETAIL ON 7/31 - CASING SET 7' OFF BOTTOM AT 3280' MD, SEE ATTACHED EXCEL TALLY) CHECK FLOATS (PASS), SHOE TRACK BAKER-LOK'D RUN (1) CENTRALIZER LOCKED DOWN 5' FROM SHOE, (1) CENTRALIZER LOCKED DOWN MID JOINT #2, (1) FREE FLOATING CENTRALIZER ON JOINT#3-25 TORQUE BTC CONNECTIONS WITH TORQUE RINGS TO 10000 FT-KLBS WITH VOLANT TOOL, BEST -O -LIFE 2000 THREAD DOPE FILL EVERY JOINT AND CIRCULATE EVERY 10TH JOINT DOWN AT 8 BPM NO HOLE ISSUES ENCOUNTERED FINAL PUMPS OFF PICKUP WEIGHT= 164 KLBS, S_LACKOFF = 125 KLBS 1530 1630 1.00 CEMT N WAIT 3,297.00 SURF STAGE UP PUMPS WHILE WAITING ON TRUCKS TO ARRIVE FOR CEMENT JOB (TRUCKING SHORTAGE). - 10 BPM, ICP = 255 PSI 16:30 - 18:30 2.00 CEMT P SURF CIRCULATE HOLE CLEAN AND CONDITION MUD FOR CEMENTING. -110 BPM, 180-200 PSI - RECIPROCATE PIPE IN 20' STROKES WHILE CIRCULATING. PICKUP WEIGHT = 158 KLBS, SLACKOFF = 128 KLBS (PUMPS ON) - CUT MUD YIELD POINT BACK FROM 40 TO 115-20 LB/10OFTA2 - MIRU SCHLUMBERGER CEMENTERS AND STAGE SUPPORT TRUCKS. 18:30 20:30 2.00 CEMT N SFAL 3,297.00 SURF UNSUCCESSFULLY ATTEMPT TO PRESSURE TEST CEMENT LINES. TROUBLESHOOT RESTRICTION IN CEMENT LINE CONTINUE TO CIRCULATE AND RECIPROCATE; 10 BPM, 175-190 PSI Printed 9/9/2013 9:53:30AM North America - ALASKA - BP Operation Summary Report Common Well Name: Z-68 AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: 8/21/2013 X3 -013H1 -C: DRILL (8,820,870.00) Page 8 of 29 Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: 8/26/2013 Rig Contractor: PARKER DRILLING CO. UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 20:30 - 22:30 2.00 CEMT N SFAL 3,297.00 SURF CONTINUE TO CIRCULATE WHILE SWAPPING OUT FRESH WATER TRUCKS FOR CEMENT JOB (FAILED PONY MOTOR ON ORIGINAL TRUCK). - FILL LINES WITH WATER AND PRESSURE TEST TO 250 PSI LOW AND 4500 PSI HIGH FOR FIVE MIN EACH TO LEAKTIGHT CRITERIA (PASS) 22:30 - 00:00 1.50 CEMT P SURF HOLD PJSM AND CEMENT 9-5/8" SURFACE CASING (DETAILS OF JOB IN FIRST TIME ENTRY FOR 7/31/13 REPORT). Printed 9/9/2013 9:53:30AM North America - ALASKA - BP Operation Summary Report Page 9 of 29 Common Well Name: Z-68 AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: 8/21/2013 X3-013H1-C:DRILL (8,820,870.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: 8/26/2013 Rig Contractor: PARKER DRILLING CO. UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) —_;— — 7/31/2013 00:00 - 03:30 3.50 CEMT P SURF CEMENT 9-5/8" SURFACE CASING AS FOLLOWS (SEE ATTACHED DOCUMENTATION): I- PUMP 100 BBLS OF 10.0 PPG MUDPUSH II SPACER @ 5.0 BPM DISENGAGE VOLANTTOOLAND RELEASE BOTTOM PLUG - PUMP 310 BBLS LEAD CEMENT (60 BBLS !AROUND BACKSIDE) WHEN SUDDEN PRESSURE SPIKE OCCURS. SHUT DOWN PUMPS AND UNABLE TO MOVE PIPE. DISCOVER PLUG IN SURFACE LINES. RE-ROUTE LINE AND RESUME PUMPING AFTER BEING DOWN FOR 1 HR. REGAIN PIPE RECIPROCATION WITH NORMAL DRAG AND FULL RETURNS. PICKUP WEIGHT = 170 KLBS, SLACKOFF = 120 KLBS. - PUMP REMAINING 225 BBLS LEAD CEMENT (T = 534 BBLS, 1570 SACKS OF 11.0 11PG E LEAD CEMENT EXCESS E 350%, YIELD 1.91 CU.FT/SK) @ 5 W -1V1, t 1 UKNNS BEGIN TO DETERIORATE AT 518 BBLS AWAY (LOSSES DURING LEAD = 71 BBLS) - PUMP 85 BBLS 408 SACKS OF 15.8 PPG CLASS G TAIL @ 5 BPM, EXCESS VOLUME 40% (YIELD 1.17 CU.FT/SK) WITH -47% RETURNS (LOSSES WHILE PUMPING TAIL= 45 BBLS). RECIPROCATE 5-10' STROKES DUIi1NITTAIL. - DISENGAGE VOLANT TOOL AND RELEASE TOP PLUG - SLB KICK OFF PLUG WITH 10 BBLS FRESH WATER (NO RETURNS) - LINEUP TO RIG PUMPS AND DISPLACE THROUGH TOP DRIVE WITH 9.2 PPG DRILPLEX MUD. RIG PUMPS 122 BBLS AT 10 BPM, 46 BBLS AT 7 BPM, 54 BBLS AT 5 BPM AND FINAL 3 BBLS AT 2 BPM. NO RETURNS DURING DISPLACEMENT. RECIPROCATE 5-10' STROKES THROUGH FIRST 65 BBLS OF DISPLACEMENT UNTIL HOLE CONDITIONS PREVENT LANDING HANGER ON LANDING RING. CONTINUE TO RECIPROCATE THROUGH REMAINDER OF JOB IN ATTEMPT TO REGAIN RETURNS AND WORK DOWN TO LANDING RING (NEVER ABLE TO GET CLOSE THAN V ABOVE). PICKUP WEIGHT INCREASED TO 195 KLBS. UNABLE TO LAND CASING ON MANDREL HANGER AT END OF JOB (LOSSES DURING DISPLACEMENT = 235 BBLS) BUMP PLUG WITH FINAL CIRC PRESSURE OF 748 PSI. PRESSURE UP TO 2000 PSI AND HOLD FOR 2 MIN. BLEED OFF PRESSURE AND CHECK FLOATS (HC PURPOSELY PLACE MANDREL HANGER 7' ABOVE LANDING RING IN PREPARATION FOR EMERGENCY SLIPS AND WACHS CUT FOR SLIP -LOC WELLHEAD.. - ESTIMATED BUMP PRESSURE PER CADE _ -700 PSI Printed 9/9/2013 9:53:30AM North America - ALASKA - BP Page 10 of 29 Operation Summary Report Common Well Name: Z-68 - CEMENT TOTAL LOSSES DURING JOB AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: 8/21/2013 X3-013H1-C:DRILL (8,820,870.00 ) Project: Prudhoe Bay Site: PB Z Pad END OF JOB Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00 OOAM Rig Release: 8/26/2013 Rig Contractor: PARKER DRILLING CO. OF CMT JOB) WITH VOLANT TOOL BECAUSE UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) ANNULAR. RIG DOWN DIVERTER OUTLET Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) COMPRESSIVE STRENGTH (11 HRS FROM (usft) CIP). CONTINUE TO HOLD PIPE IN TENSION 8/1/2013 00:00 - 03:00 3.00 CEMT N Printed 9/9/2013 9:53:30AM CONDUCTOR ANNULUS WITH 1" (1.6" MAX OD), 2.25#, N-80, CS HYDRILTUBING FROM SURFACE TO REFUSAL DEPTH OF 402' MD (275' BELOW BASE OF CONDUCTOR). UNABLE TO WORK PIPE FURTHER WITH RECIPROCATION. - WASH EACH JOINT DOWN WITH 0.5 TO 2 BPM. CEMT 3,297.00 SURF CIRCULATE HOLE CLEAN AND DISPLACE WELL FROM CONTAMINATED MUD TO DIRTY FRESH WATER WITH 270 BBLS WHILE RECIPROCATING 1" HYDRIL PIPE AT 402' MD. - FULL RETURNS WHILE CIRCULATING, 2 BPM, 1400 PSI. 2.5 BPM, 2185 PSI - UNABLE TO WORK PIPE DEEPER THAN 402' MD (275BELOW BASE OF CONDUCTOR). - LARGE AMOUNT CUTTINGS IN INITIAL RETURNS, MINOR SIGNS OF CLABBERED FLUID. - DISCUSS RESULTS OF TAG AND PLAN FORWARD WITH ANCHORAGE ODE AND SLB CEMENTERS - HOLD PJSM WITH RIG TEAM AND SLB FOR CEMENTING - CEMENT TOTAL LOSSES DURING JOB ESTIMATED AT 351 BELS CEMENT IN PLACE (CIP) AT 03:30 NO CEMENT RETURNS TO SURFACE HOLD STRING IN TENSION AT 225 KLBS AT END OF JOB 03:30 09:00 5.50 CEMT N CEMT 3,297.00 SURF HOLD PIPE IN TENSION, 225 KLBS HOOKLOAD (-30 KLBS OVER PUW NEAR END OF CMT JOB) WITH VOLANT TOOL BECAUSE PIPE NOT LANDED ON RING. WASH UP STACKAND JET FLOW LINE. FUNCTION ANNULAR. RIG DOWN DIVERTER OUTLET LINE. 09:00 14:30 5.50 CEMT N CEMT 3,297.00 SURF WAIT ON LEAD CEMENT TO REACH 50 PSI COMPRESSIVE STRENGTH (11 HRS FROM CIP). CONTINUE TO HOLD PIPE IN TENSION WITH 225 KLBS HOOKLOAD. - CLEAN PITS, OFFLOAD DRILPLEX AND TAKE ON LSND - BREAK APART RIG FLOOR CEMENT MANIFOLDAND LINES TO CLEANOUTALL CEMENT. - BUILD STANDS OF 4" DRILLPIPE WITH OFFLINE EQUIPMENT - PREPARE FOR NIPPLE DOWN AND TOP JOB CEMENT WORK 14:30 15:30 1.00 CEMT P SURF BREAK OUT LANDING JOINT AND LAYDOWN 15:30 21:00 5.50 BOPSUR P SURF NIPPLE DOWN ANNULAR DIVERTER, KNIFE VALVE AND HIGH PRESSURE RISERS - ISERS.21:00 21 0022:00 1.00 CEMT N CEMT 3,297.00 SURF RIG UP TO RUN 1" CS HYDRIL TUBING WITH FALSE BOWL ON RIG FLOOR (FOR 9-5/8" SURFACE CASING CEMENT TOP JOB) 22:00 00:00 2.00 CEMT N CEMT 3,297.00 SURF MAKEUP AND RUN IN 9-5/8" X 20" 8/1/2013 00:00 - 03:00 3.00 CEMT N Printed 9/9/2013 9:53:30AM CONDUCTOR ANNULUS WITH 1" (1.6" MAX OD), 2.25#, N-80, CS HYDRILTUBING FROM SURFACE TO REFUSAL DEPTH OF 402' MD (275' BELOW BASE OF CONDUCTOR). UNABLE TO WORK PIPE FURTHER WITH RECIPROCATION. - WASH EACH JOINT DOWN WITH 0.5 TO 2 BPM. CEMT 3,297.00 SURF CIRCULATE HOLE CLEAN AND DISPLACE WELL FROM CONTAMINATED MUD TO DIRTY FRESH WATER WITH 270 BBLS WHILE RECIPROCATING 1" HYDRIL PIPE AT 402' MD. - FULL RETURNS WHILE CIRCULATING, 2 BPM, 1400 PSI. 2.5 BPM, 2185 PSI - UNABLE TO WORK PIPE DEEPER THAN 402' MD (275BELOW BASE OF CONDUCTOR). - LARGE AMOUNT CUTTINGS IN INITIAL RETURNS, MINOR SIGNS OF CLABBERED FLUID. - DISCUSS RESULTS OF TAG AND PLAN FORWARD WITH ANCHORAGE ODE AND SLB CEMENTERS - HOLD PJSM WITH RIG TEAM AND SLB FOR CEMENTING North America -ALASKA - BP Page 11 of 29 Operation Summary Report Common Well Name: Z-68 AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: 8/21/2013, 0131-11 (8,820,870.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: 8/26/2013 Rig Contractor: PARKER DRILLING CO. UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) NPT Dater m - To Hrs Task Code I NPT Depth Phase Description of Operations � (usft) - — 03:00 11:30 8.50 r CEMT N M 3,297.00 SURF — PERFORM 9-5/8" SURFACE CASING CEMENT TOP JOB AS FOLLOWS (SEE ATTACHED SLB REPORT): - SLB PUMP 5 BBLS FRESH WATER AHEAD AND PRESSURE TEST LINES TO 250 PSI LOW AND 4000 PSI HIGH FOR FIVE MIN EACH (PASS PER LEAKTIGHT CRITERIA). SLB PUMP 64 BBLS 11.0 PPG LITECRETE I CEMENT UNTILANNULUS PACKED OFF, RETURNS WERE LOST AND PIPE STUCK. CONTINUED TO PUMP WHILE TRYING TO FREE PIPE WITH RIG FLOOR TUGGERS. PUMPED AWAY 23 BBLS FOR ATOTAL OF 87 BBLS PUMPED. RIGGED UP TOP DRIVE ELEVATORS AND PULLED PIPE FREE WITH 40 i KLBS OVERPULL. ATTEMPT TO REGAIN CIRCULATION BUT STRING IS PACKED OFF. PULL OUT OF HOLE AND CLEAR PIPE. -RUN BACK IN HOLE WITH 1" TUBING AND TAG AT 215' MD. CIRCULATE HOLE CLEAN. SLB PUMP ADDITIONAL 193 BBLS 11.0 PPG LITFCRETE CEMENT AND ACHEIVED GEMENT RETURNS TO SURFACE AT 193 BBLS AWAY. SHUT DOWN PUMPS, MONITOR WELL (STATIC). PUMP ADDITIONAL 10 BBLS CEMENTAND GET 10 BBLS CEMENT BACK TO SURFACE. MW IN/OUTATTHE CONCLUSION OF PUMPING = 11.0 PPG. PULL OUT OF HOLE AND CLEANOUT/LAYDOWN 1" TUBING. MONITOR WELL (STATIC). TOTAL CEMENT PUMPED= 290 BBLS, 852 SACKS (1.91 CUFT/SK) 11.0 PPG LITECRETE CEMENT TO SURFACE AT 280 TOTAL BBLS AWAY TOTAL CEMENT TO SURFACE = 10 BBLS NOTIFY AOGCC REPRESENTATIVE LOU GRIMALDI BY EMAIL WITH JOB DETAILS/RESULTS 11.30 1200 0.50 CEMT N CEMT 3,297.00 SURF PULL OUT OF HOLE AND LAYDOWN 1" CS HYDRIL TUBING - CIRCULATE FRESH WATER THROUGH EACH JOINT TO CLEAR OUT CEMENT 12:00 1300 1 00 CEMT N CEMT 3,297.00 SURF RIG DOWN HANDLING EQUIPMENT FOR 1" CS HYDRIL TUBING. BLOWDOWN ALL SURFACE LINES AFTER CEMENTING. T 1SURF 3:D0 13:30 0.50 CASING N CEMT I I 3,297.00 MAKEUP LANDING JOINTAND ENGAGE VOLANT TOOL. PICKUP TO 105 KLBS. FMC REP ON LOCATION TO INSTALL EMERGENCY SLIPS. SLACKOFF AND ENGAGE SLIPS WITH 70 KLBS. 13.30 1600 2.50 WHSUR N CEMT 3,297.00 SURF FMC REPRESENTATIVE ON LOCATION TO CUT 9-5/8" SURFACE CASING WITH WACHS CUTTER. MAKE CUT AT 26" ABOVE LANDING RING (44.41' FROM RIG FLOOR). - RIG CREW RIG DOWN VOLANT TOOL AND CASING EQUIPMENT. CHANGEOUT BAILS. 1600 - 19:00 3.00 WHSUR N SFAL 3,297.00 SURF UNSUCCESSFULLY ATTEMPT TO INSTALL SLIP -LOC WELLHEAD. DISCOVER UNEVEN CUT MADE WITH WACHS CUTTER. REMOVE WELLHEAD AND GRIND DOWN CUT ON 9-5/8" CASING STUMP. Printed 9/9/2013 9:53:30AM North America - ALASKA - BP Operation Summary Report Page 12 of 29 Common Well Name: Z-68 AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: 8/21/2013 X3-013H1-C:DRILL (8,820,870.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: 8/26/2013 Rig Contractor: PARKER DRILLING CO. UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) - (usft) — 19:00 19:30 0.50 WHSUR P SURF NIPPLE UP FMC SLIP -LOC X 11" 5M TOP FLANGE WELLHEAD. - - 19:30 - 00:00 4.50 WHSUR N WAIT 3,297.00 SURF -, UNSUCCESSFULLY ATTEMPT TO PRESSURE TEST SLIP -LOC WELLHEAD SEALS. NIPPLE DOWN SLIP -LOC WELLHEAD. FMC REPS DETERMINE ASSEMBLY WAS INCORRECTLY ASSEMBLED (NO INTERNAL METAL -METAL SEAL AND EXTRA SET OF UNNECESSARY NUTS). CALLOUT NEW SLIP -LOC WELLHEAD FROM STORES AND NIPPLE UP. RIG CREW LOADING PIPE BARN WITH 4-1/2" TUBING AND PICKING UP 4" DRILLPIPE WITH OFFLINE EQUIPMENT. CHANGEOUT TOP DRIVE SAVER SUB NIPPLE UP DOUBLE STUDDED ADAPTER TO TUBING SPOOL 8/2/2013 00:00 02:00 2.00 WHSUR N WAIT 3,297.00 SURF NIPPLE UP REPLACEMENT FMC SLIP -LOC X 11" 5M TOP FLANGE CASING HEAD. - RIG CREW LOAD 4-1/2" TUBING IN PIPE BARN. LOAD BHAAND BOP TESTING EQUIPMENT TO RIG FLOOR. 02:00 02:30 0.50 WHSUR P SURF PRESSURE TEST SLIP -LOC SEALS TO 250 PSI LOW FOR FIVE MIN AND 2400 PSI HIGH (80% CSG COLLAPSE) FOR 30 MIN (PASSING TESTS, SEE ATTACHED CHARTS) 02.30 04:00 1.50 WHSUR P SURF NIPPLE UP FMC 11" 5M TUBING SPOOL. INSTALL SECOND 2-1/16" GATE VALVES ON WORKING SIDE ANNULUS OUTLETS. NON -WORKING OUTLET ON OA HAS VR PLUG AND BULL PLUG NON -WORKING OUTLET ON IA HAS SINGLE GATE VALVE, COMPANION FLANGE AND NEEDLE VALVE - -- - - ---j -- - - { 04:00 10:30 6.50 1 BOPSUR P SURF NIPPLE UP HIGH PRESSURE RISERS, FLOW - RISER AND 13-5/8" 5K SHAFFER BOP STACK. 1030 14.00 3.50 BOPSUR P SURF RIG UP TO TEST BOPE. SET TEST PLUG, PURGE AIR FROM SYSTEM AND FILL ALL LINES WITH WATER. 14:00 18:00 4.00 BOPSUR P SURF PRESSURE TEST BOPE TO 250 PSI LOW AND 3500 PSI HIGH FOR FIVE MIN EACH WITH 4" TEST JOINT PER ADWOP STANDARDS AND AOGCC REGULATIONS. AOGCC REPRESENTATIVE LOU GRIMALDI WAIVES THE STATE'S RIGHT TO WITNESS. - ALL PASSING TESTS (SEE ATTACHED DOCUMENTATION) (2) HT38 FOSV, (1) 4-1/2" IF FOSV, & (1) 4-1/2" IF DART VALVE TESTED. 18:00 - 18:30 0.50 BOPSUR P SURF RIG DOWN TESTING EQUIPMENT. 18:30 - 19:00 0.50 WHSUR P SURF INSTALL WEAR BUSHING, ID = 9-7/8". RUN IN _ (4) LOCKDOWN SCREWS 1-1/4". 19:00 - 21:00 2.00 CASING P SURF CLOSE BLIND RAMS AND PRESSURE TEST 9-5/8" SURFACE CASING AND OUTER ANNULUS VALVES TO 250 PSI LOW FOR FIVE MIN AND 3500 PSI HIGH FOR 30 MIN (PASSING TESTS, SEE ATTACHED DOCUMENTATION). OBTAIN AUTHORIZATION TO PROCEED FROM WELLS TEAM LEADER. Printed 9/9/2013 9 53:30AM North America - ALASKA - BP Operation Summary Report Page 13 of 29 Common Well Name: Z-68 AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: 8/21/2013 X3 -013H1 -C: DRILL (8,820,870.00 ) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: 8/26/2013 Rig Contractor: PARKER DRILLING CO. UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 21:00 - 00:00 3.00 DRILL P SURF MAKEUP, SCRIBE MOTOR AND RUN IN HOLE WITH 8-3/4" DRILLING ASSEMBLY FROM SURFACE TO 342' MD AT MIDNIGHT. SLB MWD REPS INSTALL RADIOACTIVE SOURCE. — HYCALOG 8-3/4" DSH1619M-F1 6 BLADE PDC 1.50 BENT MOTOR WITH PORTED FLOAT, DIR/GR/RES/DEN/NEU - WELL COMMANDER CIRC SUB 8/3/2013 00:00 01:30 1.50 DRILL P SURF RUN IN HOLE WITH 8-3/4" DRILLING ASSEMBLY FROM 342' MDAT MIDNIGHT TO 1050' MD WITH 4" HWDP OUT OF DERRICK 01:30 03:00 1.50 DRILL N DFAL 3,297.00 SURF PERFORM SHALLOW HOLE TEST OF MWD TOOLS - 500 GPM, 1600 PSI VS 1400 PSI MODELED, PASS) - DIFFICULTY COMMUNICATING WITH MWD TOOLS (DISCUSS WITH SLB TECHNICAL REPS, DECISION TO TRIP IN 5 STANDS AND RETEST) 03:00 03:30 0.50 DRILL P SURF SERVICE AND LUBRICATE RIG 03:30 04:00 0.50 DRILL P SURF TRIP IN HOLE WITH 8-3/4" DRILLING ASSEMBLY ON 4" DRILLPIPE FROM DERRICK FROM 1050' MD TO 1525' MD 04:00 04:30 0.50 DRILL P SURF RE -ATTEMPT SHALLOW HOLE TEST OF MWD TOOLS - FIRST ATTEMPT UNSUCCESSFUL. CHNAGEOUT COMPUTER AND RETEST (PASS) 04:30 06:30 2.00 DRILL P SURF TRIP IN HOLE WITH 8-3/4" DRILLING ASSEMBLY ON 4" DRILLPIPE FROM 1525' MD TO 2955' MD ON ELEVATORS. WASH DOWN FROM 2955' MD TO TAG HARD CEMENT AT 3095' MD (98' ABOVE FLOAT COLLAR) - HOLD UNNANOUNCED KICK WHILE TRIPPING (D1) DRILLANDAAR BY MANIPULATING FLOW PADDLE AND ADDING FLUID TO TRIP TANKS. - RECORD SLOW PUMP RATES 06:30 09:00 2.50 DRILL P SURF CLEANOUT CEMENT WiIH 8-3/4" DRILLING ASSEMBLY FROM 3095' MD TO FLOAT COLLAR ON DEPTH AT 3193' MD. CONTINUE TO CLEAN OUT CEMENT IN SHOE TRACK TO 3275' MD (5' ABOVE SHOE) - 10-15 KLBS WOB, 30 RPM, 400 GPM, 140 BIT RPM, 1500 PSI OFF BOTTOM, 1700-1850 PSI ON BOTTOM, 5-7 KFTLBS TORQUE 0900 10:00 1.00 DRILL P SURF DISPLACE WELL FROM 9.2 PPG DRILPLEX TO 92 PPG LSND WHILE RECIPROCATING 1/2 STAND; 400 GPM, 30 RPM. RECORD NEW SLOW PUMP RATES. 10:00 10:30 0.50 DRILL P SURF CLEANOUT REMAINING 5' OF SHOE TRACK, FLOAT SHOE AND RATHOLE TO PREVISOULY DRILLED DEPTH OF 3297' MD. DRILL 20' NEW FORMATION TO 3317MD. - 400 GPM, 1100-1300 PSI, 30 RPM, 140 BIT RPM - HOLD UNNANOUNCED KICK WHILE DRILLING (D2) DRILLANDAAR Printed 9/9/2013 9,53:30AM North America - ALASKA - BP Operation Summary Report Page 14 of 29 1 Common Well Name: Z-68 AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: 8/21/2013 X3 -0131-11-C: DRILL (8,820,870.00) Project: PrudhS oe Bayite: PB Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: 8/26/2013 Rig Contractor. PARKER DRILLING CO. UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations _(hr)- (usft) i— 10:30 - 11:00 0.50 DRILL P ---- SURF - - - PULL UP INTO 9-5/8" CASING SHOE AT 3280' MD AND CIRCULATE HOLE CLEAN. 600 GPM, 1750 PSI, 30 RPM, 195 BIT RPM, - I MW IN/OUT = 9.2 PPG 11:00 1300 2.00 DRILL P SURF RIG UP, CLOSE UPPER PIPE RAMS AND PERFORM LOTTO 18.1 PPG EMW. OPEN UPPER PIPE RAMS. 9.2 PPG MW, 1467 PSI SURFACE PRESSURE, 3162' TVD - OBTAIN AUTHORIZATION TO PROCEED FROM ODE (SEE ATTACHED TEST DOCUMENTATION) 13:00 0000 11.00 DRILL P INTI DIRECTIONAL DRILL 8-3/4" INT1 HOLE FROM 3317' MD TO 4670' MD AT MIDNIGHT (1353' IN 11 HRS = 123 FPH WITH CONNECTIONS) THROUGH UGNU FORMATION. - 600 GPM, 80 RPM, 245 BIT RPM, 2150-2450 PSI ON BOTTOM, 1850-2225 PSI OFF BOTTOM, 150-200 PSI DIFFERENTIAL, 5-8 KFT-LBS TORQUE ON, 4-7 KFT-LBS OFF, 3-6 KLBS WOB - INSTANTANEOUS ROTATING ROP = 500-600 FPH, SLIDING = 150-225 FPH i- MW IN/OUT = 9.2 PPG, 49 SEC/QT VIS CALCULATED ECD = 9.9 PPG, ACTUAL ECD = 10.2 PPG - PICKUP WEIGHT = 141 KLBS, SLACKOFF = 103 KLBS, ROTATING = 117 KLBS - NO LOSSES TO FORMATION BACKREAM 30' AND WASH DOWN AT 70% PUMP RATE EACH CONNECTION SURVEY EACH CONNECTION SLIDE -45' PER STAND AT 50-100° LOHS TO TURN FROM 1751 AXI TO 80 'AND BUILD FROM 19 ° INC TO 310, MAX DLS = 4 1/100'. - ADT = 5.02 HRS, ART = 1.6 HRS, AST = 3.42 HRS - RECORD SLOW PUMP RATES EVERY 500' MD DRILLED SIMOPS: MAKEUP 4" DRILLPIPE STANDS WITH OFFLINE EQUIPMENT. Printed 9/9/2013 9:53:30AM North America - ALASKA - BP Page 15 of 29 Operation Summary Report Common Well Name: Z-68 AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date. 8/21/2013 X3-013H1-C:DRILL (8,820,870.00) - Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: 8/26/2013 Rig Contractor: PARKER DRILLING CO. UN: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth 1 Phase Description of Operations _ - _- - - --� i —(hr-) — —� — - (usft)-- — 8/4/2013 00:00 - 06:00_ i 6.00 DRILL P � INT1 — DIRECTIONA- - -L DRILL 8-3/4" INT1 HOLE FROM 4670' MD AT MIDNIGHT TO 5325' MD (655' IN 6 HRS = 109 FPH WITH CONNECTIONS) IN SHRADER BLUFF FORMATION; 600 GPM, 80 RPM, 245 BIT RPM, 2450-2650 PSI ON BOTTOM, 2350-2450 PSI OFF BOTTOM, 1150-200 PSI DIFFERENTIAL, 9-10 KFT-LBS TORQUE ON, 8-9 KFT-LBS OFF, 5-8 KLBS WOB INSTANTANEOUS ROTATING ROP = LIMITED TO 360 FPH FOR LWD DATA COLLECTION, SLIDING = 75-125 FPH MW IN/OUT = 9.2 PPG, 48 SEC/QT VIS, CALCULATED ECD = 9.9 PPG, ACTUAL ECD = 10.2 PPG - BACKREAM 30' AND WASH DOWN AT 70% PUMP RATE EACH CONNECTION - ADT = 2.77 HRS, ART = 1.57 HRS, AST = 1.20 HRS SIMOPS: COMPLETE PICKING UP ALL 4" DRILLPIPE PICKED UP FOR INTERMEDIATE HOLE SECTION WITH OFFLINE EQUIPMENT 06:00 1500 9.00 DRILL P INTI DIRECTIONAL DRILL 8-3/4" INTI HOLE FROM 5325' MD TO 6457' MD (1132' IN 9 HRS = 126 FPH WITH CONNECTIONS) IN CM2 FORMATION; 600 GPM, 100 RPM, 265 BIT RPM, 3000-3400 PSI ON BOTTOM, 2750-3050 PSI OFF BOTTOM, 300-400 PSI DIFFERENTIAL, 10-11 KFT-LBS TORQUE ON, 8-9 KFT-LBS OFF, 14-18 KLBS WOB - INSTANTANEOUS ROTATING ROP = 250-300 FPH, SLIDING = 50-100 FPH - MW IN/OUT = 9.2 PPG, 49 SEC/QT VIS, CALCULATED ECD = 9.9 PPG, ACTUAL ECD = 10.2-11.2 PPG - BACKREAM 30'-60' AND WASH DOWN AT 70% PUMP RATE EACH CONNECTION - CIRCULATE AROUND HI -VIS SWEEP AT 5988' MD WITH NO INCREASE IN CUTTINGS AT SHAKERS GHOST REAMER ENTERS OPENHOLE AT 6140' MD AND LEADS TO INCREASE IN CUTTINGS AND DIFFICULTIES SLIDING. - ADT = 5.24 HRS, ART = 4.42 HRS, AST = 0.82 HRS - BEGIN TO INCREASE MW AT 61 00'MD WITH SPIKE FLUID IN PREPARATION FOR CM1 FORMATION AT 6469" MD. Printed 9i9/2013 9:53:30AM North America - ALASKA - BP Page 16 of 29 1 Operation Summary Report Common Well Name: Z-68 AFE No Event Type: DRL- ONSHORE (DON) i Start Date: 7/25/2013 End Date: 8/21/2013 X3 -013H1 -C: DRILL (8,820,870.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: 8/26/2013 Rig Contractor: PARKER DRILLING CO. UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @IO2.82usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase II Description of Operations - (hr) � (usft) _ 15:00 21:00 6.00 DRILL P INT1 DIRECTIONAL DRILL 8-3/4" INTI HOLE FROM 6457' MD TO 6958' MD (501' IN 6 HRS = 84 FPH WITH CONNECTIONS) IN CM1 FORMATION; 600 GPM, 100 RPM, 265 BIT RPM, 3700-3900 PSI ON BOTTOM, 3450-3650 PSI OFF BOTTOM, 250-350 PSI DIFFERENTIAL, 10-11 KFT-LBS TORQUE ON, 8-9 KFT-LBS OFF, 10-15 KLBS WOB INSTANTANEOUS ROTATING ROP = 175-200 FPH, SLIDING = 50-75 FPH MW IN/OUT = 10.3 PPG, 52 SEC/QT VIS - CALCULATED ECD = 11.2 PPG, ACTUAL ECD = 12.D-12.6 PPG. CONTROL ECD WITH INCREASED BACKREAMING AND LIMITING ROP. ADT = 3.71 HRS, ART = 2.26 HRS, AST = 1.45 HRS 21:00 21:30 0.50 DRILL P INTI RACK BACK ONE STAND. CIRCULATE AND CONDITION MUD WHILE RECIPROCATING FULL STAND; 6937 MD - 6842' MD GPM, 3675 PSI, 80 RPM, 8.5-9 KFT-LBS (600 TORQUE - INSCREASE SYSTEM RESINEX AND ASPHASOL (BLACK PRODUCT) TO 4 PPB IN PREPARATION FOR THRZ AT 6992' MD AND WAIT ON WEIGHTED SPIKE FLUID TRUCK DUE TO FLAT TIRE. 21:30 23.30 2.00 DRILL P INT1 DIRECTIONAL DRILL 8-3/4" INT1 HOLE FROM 6958' MD TO 7127' MD (169' IN 2 HRS = 85 FPH j WITH CONNECTIONS); 600 GPM, 100 RPM, 265 BIT RPM, 39504100 PSI ON BOTTOM, 3750-3800 PSI OFF BOTTOM, 300 PSI DIFFERENTIAL, 10-11 KFT-LBS TORQUE ON, 9 KFT-LBS OFF, 15 KLBS WOB - INSTANTANEOUS ROTATING ROP = 200-225 FPH, SLIDING = 50-75 FPH 23:30 00:00 0.50 DRILL P INT1 CIRCULATE ONE PLANNED BOTTOMS UP TO CLEAR ANNULUS AT 7127' MD CONNECTION IN PREPARATION FOR THE TKC4 (KUPARUK) FORMATION AT 7284' MD - PICKUP WEIGHT = 185 KLBS, SLACKOFF = 123 KLBS, ROTATING = 135 KLBS - MW IN/OUT = 10.3 PPG, 52 SEC/QT, CALCULATED ECD = 11.3 PPG, ACTUAL ECD = 12 PPG Printed 9/9/2013 9.53:30AM North America - ALASKA - BP Page 17 of 29 Operation Summary Report Common Well Name: Z-68 AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: 8/21/2013 X3 -0131-11-C: DRILL (8,820,870.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:00AM Rig Release: 8/26/2013 Rig Contractor: PARKER DRILLING CO. UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations � - — ----(hr ) i — (usft)---INTI 8/5/2013 00:00 - 06:00 6.00 DRILL P DIRECTIONAL DRILL 8-3/4" INT1 HOLE FROM 7127' MD TO 7595' MD AT 6 AM (468' IN 6 HRS = 78 FPH WITH CONNECTIONS); 580 GPM, 100 06:00 - 13:00 7.00 T DRILL Printed 9/9/2013 9:53:30AM RPM, 260 BIT RPM, 3950-4175 PSI ON BOTTOM, 3600-3850 PSI OFF BOTTOM, 10-12 KFT-LBS TORQUE ON, 9-10 KFT-LBS OFF, 14-18 KLBS WOB MW IN/OUT = 10.6 PPG, 53 SEC/QT VIS, CALCULATED ECD = 11.3 PPG, ACTUAL ECD = 11.8-12.2 PPG BACKREAM 30' AND WASH DOWN AT 70% PUMP RATE EACH CONNECTION, CONTROL ECD WITH INCREASED BACKREAMING AND LIMITING ROP. - DECREASE FLOWRATE FROM 600 GPM TO 580 GPM DUE TO PRESSURE LIMITATIONS - PERFORM PLANNED FLOWCHECK AFTER DRILLING 5' INTO TKC4 (KUPARUK) FORMATION AT 7284' MD (STATIC) ADT = 3.53 HRS, ART = 2.54 HRS, AST = 0.99 _ HRS P INT1 DIRECTIONAL DRILL 8-3/4" INTI HOLE FROM 7595' MD TO 8170' MD (575' IN 7 HRS = 82 FPH WITH CONNECTIONS); 550 GPM, 100 RPM, 251 BIT RPM, 3550-3700 PSI OFF BOTTOM, 3950-4200 PSI ON BOTTOM, 9-10 KFT-LBS TORQUE ON BOTTOM, 8-9 KFT-LBS TORQUE OFF, 14-20 KLBS WOB MW IN/OUT = 10.6 PPG, 48 SEC/QT VIS, CALCULATED ECD = 11.4 PPG, ACTUAL ECD = 12.0 PPG - DECREASE FLOWRATE FROM 580 GPM TO 550 GPM DUE TO PRESSURE LIMITATIONS - BACKREAM 30' AND WASH DOWN AT 70% PUMP RATE EACH CONNECTION, CONTROL ECD WITH INCREASED BACKREAMING AND LIMITING ROP. - PICKUP WEIGHT = 205 KLBS, SLACKOFF = 130 KLBS, ROTATING = 148 KLBS. - ADT = 5.03 HRS, ART = 2.93 HRS, AST = 2.10 HRS - DECISION TO MAKE WIPER TRIP TO 4400' MD TO CLEANUP HOLE AND DILUTE/TREAT MUD IN EFFORT TO REDUCE ECD. North America - ALASKA - BP Page 18 of 29 Operation Summary Report Common Well Name: Z-68 Event Type: DRL- ONSHORE (DON) I Start Date: 7/25/2013 End Date: 8/21/2013 AFE No X3 -013H1 -C: DRILL (8,820,870.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: 8/26/2013 Rig Contractor: PARKER DRILLING CO. UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) DateFrom - To Hrs Task Cade NPT NPT Depth Phase Description of Operations -- ----- - (hr) (usft)- - 13:00 23:00 10.00 DRILL P r - INT1 — -- - WIPER TRIP: BACKREAM OUT OF THE HOLE WITH 8-3/4" DRILLING ASSEMBLY FROM 8170' MD TO 5330' MD (START OF MAD PASS DEPTH AND DEPTH OF GHOST REAMER WITH BIT AT TD) 550 GPM, 3200-3450 PSI, 100-120 RPM, 8 KFT-LBS TORQUE REAMING SPEED DICTATED BY ECD LIMITATIONS (MAINTAINING 11.8 - 12.3 PPG EMW). AVERAGE 300-400 FPH - PUMP (1) 30 BBL SUPER SWEEP AT 6000' WITH NO IMPROVEMENT IN ECD NOR INCREASE IN CUTTINGS. PUMP (1) 30 BBL 25 PPB NUT PLUG SWEEP CHASED BY (1) I HI -VIS, 25 PPB NUT PLUG, SUPER SWEEP. BACK TO BACK SWEEPS LEAD TO SIGNIFICANT INCREASE IN CUTTINGS AT SHAKERS AND MANAGEABLE ECD (11.5 PPG EMW AT 360 FPH) NO HOLE ISSUES ENCOUNTERED 23.00 0000 1.00 DRILL P INT1 WIPER TRIP: MAD PASS LOG FROM 5330' MD 000' BELOW OBF_BASE) TO 5231' MD AT MIDNIGHT AT 360 FT/HR - 550 GPM, 120 RPM, 7 KFT-LBS TORQUE, 3000-3050 PSI - CALCULATED ECD = 11.3 PPG, ACTUAL = 11.5 PPG -- -- - - ---- --- - _ __-_.---------- 8/6/2013 00:00 04:30 4.50 DRILL P INTI MAD PASS LOG ACROSS SHRADER BLUFF AND LOWER UGNU FORMATIONS FROM 5231' MD AT MIDNIGHT TO ENDING DEPTH AT 4400' MD; 360 FT/HR, 550 GPM, 2750-2950 PSI, 120 RPM, 271 BIT RPM, 6-7 KFT-LBS TORQUE, ECD = 11.3 PPG EMW PUMP (2) 40 BBL 30 PPB NUT PLUGS SWEEPS WHILE BACKREAMING WITH MINOR INCREASES IN CUTTINGS RETURNS AT (SHAKERS. - NO HOLE ISSUES ENCOUNTERED 04:30 05:00 0.50 DRILL P INT1 SERVICE AND LUBRICATE RIG. 05:00 08:00 3.00 DRILL P + INTI TRIP IN HOLE WITH 8-3/4" DRILLING ASSEMBLY ON ELEVATORS FROM 4400' MD TO PREVIOUSLY DRILLED DEPTH OF 8170' MD. - DILUTE SURFACE MUD SYSTEM WITH NEW 10.6 PPG LSND WHILE TRIPPING IN HOLE. WASH DOWN FINAL STAND. - CHANGEOUT POPOFF ON MUD PUMP #1 DURING TRIP. 08:00 1000 2.00 DRILL P INTI CONDITION MUD AND CIRCULATE, WASH DOWN F/ 8076' MD TO 8171' MD PSI OFF BOTTOM=2950, FLOW 20 %, PACK OFF, PUMP 5 SPM @ 10 RPM, WORK PIPE UNTILL FREE, ESTABLISHED FULL CIRCULATION PUMPING 120 SPM @ 500 GPM. 10 00 1030 0.50 DRILL P INTI OBTAIN SPR RATES, 8170' MD 7490 TVD MUD WT 10.7 Printed 9/9/2013 9.53 30AM North America - ALASKA - BP Operation Summary Report Page 19 of 29 Common Well Name: Z-68 1000 AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: 8/21/2013 X3 -013H1 -C: DRILL (8,820,870.00) 10:30 16:00 5.50 Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: 8/26/2013 Rig Contractor: PARKER DRILLING CO. 8740' MD TO 9309' MD (8438' TVD) UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) INTI Date From- To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) DRILL PPG 10:30 - 1630 6.00 DRILL P INT1 DRILL 8-3/4" INTERMEDIATE HOLE FROM - BACKREAM 60 FT PRIOR TO CONNECTIONS - MUD WEIGHT: 10.6 PPG IN, 10.6 PPG OUT 8171' MD TO 8740' MD (7962' TVD) P INTI DRILL 8-3/4" INTERMEDIATE HOLE FROM 550 GPM, 3950 PSI ON, 3480 PSI OFF 9309' MD TO 9675' MD (8701' TVD) INT1 550 GPM, 3950 PSI ON, 3480 PSI OFF 100 RPM, 10KTORQUE ON, 8K TORQUE OFF j- 100 RPM, 10K TORQUE ON, 8K TORQUE OFF INTI PU 205K, SO 133K, ROT 155K PU 205K SO 133K ROT 155K 1630 - 00:00 7.50 DRILL 8/7/2013 00:00 - 06:00 6.00 DRILL 06:00 - 0700 1.00 DRILL 0700 - 0800 1.00 0800 1000 2.00 1000 10:30 0.50 10:30 16:00 5.50 16:00 17:00 1.00 17:00 1900 2.00 19:00 20:30 1.50 20:30 21:30 1.00 Printed 9/9/2013 9:53.30AM DRILL DRILL DRILL - ECD: ACTUAL= 11.54 PPG, CALC = 11.22 9,706.00 INT1 PPG SURVEY EVERY -90 FT _ BACKREAM 60 FT PRIOR TO CONNECTIONS DRILL MUD WEIGHT: 10.6 PPG IN, 10.6 PPG OUT INT1 - P INT1 DRILL 8-3/4" INTERMEDIATE HOLE FROM 8740' MD TO 9309' MD (8438' TVD) DRILL - 550 GPM, 3950 PSI ON, 3480 PSI OFF INTI - 100 RPM, 10K TORQUE ON, 8K TORQUE OFF PU 205K, SO 133K, ROT 155K ECD: ACTUAL = 11.54 PPG, CALC = 11.22 DRILL PPG INT1 SURVEY EVERY -90 FT - BACKREAM 60 FT PRIOR TO CONNECTIONS - MUD WEIGHT: 10.6 PPG IN, 10.6 PPG OUT P INTI DRILL 8-3/4" INTERMEDIATE HOLE FROM DRILL 9309' MD TO 9675' MD (8701' TVD) INT1 550 GPM, 3950 PSI ON, 3480 PSI OFF DRILL j- 100 RPM, 10K TORQUE ON, 8K TORQUE OFF INTI PU 205K, SO 133K, ROT 155K - ECD: ACTUAL = 11.3 PPG, CALC = 11.22 PPG BACK REAM 1 STAND, STAGE UP TO 600 GPM - SURVEY EVERY -90 FT - BACKREAM 60 FT PRIOR TO CONNECTIONS - MUD WEIGHT: 10.6 PPG IN, 10.6 PPG OUT P INT1 CBU FOR SAMPLES, ROTAND RECIP, SPM=132, PSI=3640, P/U=232, S/O=142, RPM 100 TORQ=BK P INT1 DRILL 8-3/4" INTERMEDIATE HOLE FROM 9675' MD TO 9706' MD (8701' TVD) - 550 GPM, 3640 PSI ON, 3480 PSI OFF - 100 RPM, 10K TORQUE ON, 8K TORQUE OFF - PU 245K, SO 145K, ROT 160K - ECD: ACTUAL= 11.3 PPG, CALC = 11.22 PPG - SURVEY EVERY -90 FT - BACKREAM 60 FT PRIOR TO CONNECTIONS - MUD WEIGHT: 10.6 PPG IN, 10.6 PPG OUT N DPRB 9,706.00 INTI CBU, ROTAND RECIP, ENCOUNTER LOSES, P/U, SPACE OUT AND CHECK WELL= LOSSES, CIRC @ 20 SPM PSI=343, LOSSES 160 BBLS/HRS WHILE PUMPING, 120 BBLS/STATIC ADD LCM TO MUD, MIX LCM PILL, LOSS RATE 60 BBLS/HR DRILL I N DPRB 9,706.00 INT1 PUMP 30 BBL LCM 40# BBL PIL, SPOT AT BIT, _ LOSS RATE DROP TO 10BBLS/ HR STATIC DRILL P INT1 PUMP OUT OF HOLE W/.5 BPM @ 100 PSI, LOSSES WHILE PUMPING OUT 7-10 BBLS/HR DRILL P INTI CBU F/7413 TO 7318, BACK REAM FULL STAND, MONITOR WELL STATIC DRILL P -T INT1 POH ON ELEVATORS F17318' MD TO 5516' MD, PIU 190K S/O 115K MONITOR WELL VIA TRIP TANK, SLIGHT LOSSES TO WELL, .5 BBUHR. DRILL P INT1 RIH ON ELEVATORS F/5516' MD TO 7318'MD DRILL P INTI CBU, STAGE PUMPS UP TO 575 GPM WHILE BACK REAM 1 STAND, STAGE UP TO 600 GPM FOR 5 MIN, ECD 11.3 North America - ALASKA - BP Operation Summary Report Page 20 of 29 Common Well Name: Z-68 AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: 8/21/2013 X3 -013H1 -C: DRILL (8,820,870.00) Project: Prudhoe Bay -- -- �', Site: PB Z Pad I Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: 8/26/2013 Rig Contractor: PARKER DRILLING CO. UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 21:30 00:00 2.50 DRILL P 1 INT1 RIH ON ELEVATORS F/ 7318' MD TO 8550' MD, REAM TIGHT SPOT @ 7900'MD, WASH TO DN FROM 8550' MD TO 8740' MD 8/8/2013 07:00 - 07:30 0.50 r DRILL P INT1 SPOT LCM PILL IN SAG RIVER. -OBTAIN SPR'S. -PUMP 20 BBL 40# LCM PILLAND CHASE TO BIT. -10 MINUTE FLOW CHECK- STATIC. -PUMP LCM PILL OUT BIT AT 0.5 BPM -PULL FROM 9706 TO 9594 AT 30 FPM SPOTTING LCM PILL. -LD SINGLE. 00:00 02:30 2.50 DRILL P INT1 ROTATE AND WASH TO BOTTOM. -FROM 8750' MD TO 9706' MD. -500 GPM AT 3100 PSI -40 RPM WITH 8K TORQUE. 02.30 07:00 4.50 DRILL P INT1 CIRC BOTTOMS UP X4 CONDITION HOLE, LOSSES 4 TO 6 BBLS PER HOUR, PUMP 550 GPM, ROTATE 40 RPM. INCREASE PUMP RATE TO 600 GPM FOR ONE CIRCULATION. INITIAL RUNNING SHALES OBSERVED AT SHAKERS. RETURNS CLEAR UP WITH < 0.5 _ BPH LOSSES AT END OF CIRCULATING. 07:30 - 11:30 4.00 DRILL P I INT1 PUMP OUT OF HOLE. -FROM 9594 TO 7400 FT. -0.5 BPM AND 30 FPM. -PU 220K AND SO 127K. 11 30 1500 3.50 DRILL P INT1 TRIP OUT OF HOLE ON ELEVATORS. -FROM 7400 TO 3239 FT. -PU 190K AND SO 115K. -FLOW CHECkAT 9-5/8" CASING SHOE - STATIC. 1500 1630 1.50 DRILL P INT1 TRIP OUT HOLE ON ELEVATORS, CONT. -FROM 3239 TO BHA. -10 MINUTE FLOW CHECK 1 STAND ABOVE BHA - STATIC. _ -CHANGE OUT SLIPS. 16 30 20:30 4.00 DRILL P INTI j HANDLE BHA. -RACK BACK 4" HWDP. -LAYDOWN 5" HWDP AND JARS. -LAYDOWN NON -MAG DRILL COLLARS. RECOVER 2 RA SOURCES. -LAYDOWN MWD AND LWD TOOLS. -CLOSE RAMS. -BREAK BIT AND LAY DOWN MOTOR. 'BIT #3 GRADE: 2 -6 -MT -T -X -2 -BT -TD. NOTE: — - TWO BROKEN BLADES. 20:30 23.00 2.50 BOPSUR P INT1 CHANGE OUT UPPER RAMS. -PUMP OUT AND FLUSH STACK. -CLOSE BLIND RAMS AND DE -ENERGIZE ACCUMULATOR. -CHANGE RAMS FROM 2-7/8" X 5-1/2" VBR TO 7" CASING RAMS. -ENERGIZE ACCUMULATOR. -FUNCTION TEST LOWER VBR'S. 'SIM OP: CLEAN AND CLEAR RIG FLOOR. Printed 9/9/2013 9:53:30AM North America - ALASKA - BP Page 21 of 29 Operation Summary Report Common Well Name: Z-68 - 04:30 1.50 CASING AFE No Event Type: DRL- ONSHORE (DON) TEST RUN 7" CASING HANGER. Start Date: 7/25/2013 End Date: 8/21/2013 X3 -013H1 -C: DRILL (8,820,870.00) Project: Prudhoe Bay -DRAIN STACK. Site: PB Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM -MAKE UP TWO PIECE LANDING JOINT WITH Rig Release: 8/26/2013 Rig Contractor: PARKER DRILLING CO. UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth i Phase Description of Operations (usft) -(hr) 23:00 00:00 - -- 1.00 --- BOPSUR P INTI PRESSURE TEST 7" CASING RAMS. -VERIFY SEATED THROUGH OA VALVE. -OPEN BLIND RAMS. -PULL WEAR RING AND INSTALL TEST PLUG. 04:30 05:00 0.50 CASING -RIG UP 7" JOINT AND PT EQUIPMENT. INT1 COMPLETE RIG UP TO RUN CASING. -TEST 7" RAMS 250/3500 PSI FOR 5 CHARTED -PULL MASTER SLIPS. MNUTES-OK. 8/9/2013 00:00 01:00 1.00 BOPSUR P INTI RIG DOWN PRESSURE TEST EQUIPMENT. -MOBILIZE 4" ELEVATORS TO RIG FLOOR. -LAYDOWN TEST JOINT. -VT X -OVER AND FOSV WITH KEY ON FLOOR. 05 00 -PULL TEST PLUG. 4.50 CASING P - RUN 7" INTERMEDIATE CASING WITH VOLANT 01:00 - 03:00 2.00 CASING P INTI RIG UP CASING EQUIPMENT TO RUN 7" TOOL. FILLAND CIRC 8 MIN @ 5BPM EVERY INTERMEDIATE CASING. 120 JOINTS -CHANGE OUT TO LONG BALES. -RIG UP VOLANT TOOL. *7" 26# L-80 VAMTOP. -RIG UP CASING EQUIPMENT. 03.00 - 04:30 1.50 CASING P INT1 TEST RUN 7" CASING HANGER. -DRAIN STACK. -MAKE UP TWO PIECE LANDING JOINT WITH CASING HANGER. -RUN IN HOLE AND TAG AT 43.9 FT. MARK LANDING JOINT. -VERIFY SEATED THROUGH OA VALVE. -LAYDOWN LANDING JOINTAND HANGER. 04:30 05:00 0.50 CASING P INT1 COMPLETE RIG UP TO RUN CASING. -PULL MASTER SLIPS. -MOBILIZE 4" ELEVATORS TO RIG FLOOR. -VT X -OVER AND FOSV WITH KEY ON FLOOR. 05 00 0930 4.50 CASING P INT1 RUN 7" INTERMEDIATE CASING WITH VOLANT TOOL. FILLAND CIRC 8 MIN @ 5BPM EVERY 120 JOINTS *7" 26# L-80 VAMTOP. -PJSM. -PICK UP SHOE TRACK AND TEST FLOATS -OK. 09:30 10:00 0.50 CASING P INT1 KICK WHILE TRIPPING WITH 7" CASING, AAR 10:00 1230 2.50 CASING P INTI RUN 7" INTERMEDIATE CASING WITH VOLANT TOOL, FILLAND CIRC 8 MIN @ 5BPM EVERY 20 JOINTS *7" 26# L-80 VAMTOP. 12 30 1300 0.50 CASING P INT1 @ 9 5/8 CASING SHOE 3257' MD STAGE PUMPS UP TO 6 BPM IN 1 BBL INCREMENTS, CIRC ONE ANNULAR HOLE VOLUME, UPWT=107K, DNW7=99K 13:00 21:30 6.50 CASING P INT1 RUN 7" INTERMEDIATE CASING WITH VOLANT TOOL F/3298' MD TO 7220' MD, FILLAND CIRC 3 MIN @ 5BPM EVERY 5 JOINTS THRU THE UGNU AND EVERY 10 JOINT BELOW THE UGNU *7" 26# L-80 VAMTOP. 21:30 2230 1.00 CASING P INT1 RUN 7" INTERMEDIATE CASING WITH VOLANT TOOL F/7220' MD TO 7426' MD, CIRC EACH JOINT @ 5 BPM FOR 8 MIN UNTIL BOTTOMS I � UP —k -INTI *7" 26# L-80 VAMTOP. 22:30 00:00 1.50 CASING P I RUN 7" INTERMEDIATE CASING WITH VOLANT 'TOOL F/7426' MD TO 8130' MD, FILLAND CIRC 8 MIN @ 58PM EVERY 10 JOINTS -- _ 8/10/2013 00:00 02'30 2.50 CASING P INT1 RUN 7" INTERMEDIATE CASING WITH VOLANT TOOL F/8130' MD TO 9706' MD, FILL PIPE ONLY NO CIRCULATION Printed 9/9/2013 9:53:30AM North America - ALASKA - BP Page 22 of 29 Operation Summary Report Common Well Name: Z-68 AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: 8/21/2013 X3 -0131-11-C: DRILL (8,820,870.00) ---- _- — ' Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: 8/26/2013 Rig Contractor: PARKER DRILLING CO. LUWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Date From - To Hrs Task Code I NPT NPT Depth Phase Description of Operations — (hr) — (usft) 02:30 03:30 1.00 CASING P INT1 PICK UP LANDING JOINT, LAND CASING IN Printed 9/9/2013 9:53:30AM HANGER, INCREMENT PUMP UP TO 5 BPM, 1/2 BBL INCREMENTS, PSI=810 @ 5 BPM, NO LOSSES TO FORMATION. PU=265, SO=145, 03:30 09:30 6.00 CEMT P INT1 CIRC AND CONDITION MUD, 6 BPM, 630 PSI RECIPROCATE PIPE, P/U=310 S/0=140, CBU _ 7X 09:30 13:00 3.50 CEMT P INTI RIG UP CEMENTERS AND TEST LINES, CEMENT 7" INTERMEDIATE CASING AS FOLLOWS: FILL LINES WITH WATER AND PRESSURE TEST TO 4000 PSI FOR 5 MINUTES - PUMP 45 BBLS OF 11.0 PPG MUDPUSH II SPACER @ 5 BPM, 600 PSI RELEASE BOTTOM PLUG PUMP 187 BBLS OF 11.5 PPG LITECRETE, LEAD CEMENT @ 5 BPM, EXCESS VOLUME 30% (YIELD 1.76 CU.FT/SK) I- PUMP 21 BBLS OF 15.8 PPG CLASS G TAIL @ 5 BPM EXCESS VOLUME 30% (YIELD 1.17 CU.FT/SK) DROP TOP PLUG - RECIPROCATED PIPE 0 FT AT SURFACE WHILE PUMPING CEMENT AT 5 BPM PERFORM DISPLACEMENT WITH RIG PUMPS AND 10.6 PPG LSND MUD PER SLB CADE - 20 BBLS DISPLACED AT 7 BPM: ICP 423 PSI 100% RETURN FLOW, FCP 577 PSI 100% RETURN FLOW - 88 BBLS DISPLACED AT 6 BPM: ICP 577 PSI 100% RETURN FLOW, FCP 600 PSI 100% RETURN FLOW - 133 BBLS DISPLACED AT4 BPM: ICP 300 PSI 100% RETURN FLOW, FCP 505 PSI 100% RETURN FLOW - 94 BBLS DISPLACED AT 3 BPM: ICP 400 PSI 100% RETURN FLOW, FCP 700 PSI 100% RETURN FLOW - REDUCE RATE TO 2 BPM PRIOR TO PLUG BUMP: FINAL CIRCULATING PRESSURE 680 PSI - BUMP PLUG AND INCREASE PRESSURE TO 1140 PSI, CHECK FLOATS - GOOD TOTAL DISPLACEMENT VOLUME 354.31 BBLS (MEASURED BY STROKES @ 96% PUMP EFFICIENCY) - RECIPROCATION STOPPED, AT START OF CEMENT JOB DUE TO OVERPULL. 13:00 1400 1.00 CASING P INTI PRESSURE TEST 7"CASING, 250 LOW/5 MIN, 3500 HIGH/45 MIN RECORD ON CHART, TEST APPPROVED BY JW 14:00 15:00 1.00 CASING P INT1 R/U TO PUMP DOWN 0/A, CLOSE UPPER 7" PIPE RAMS ON LANDING JOINT. PUMP DOWN O/A @ 1 BPM AND PERFORM INJECTIVITY TEST, OBSERVE BREAK DOWN @ 600 PSI, PUMP TOTAL OF 2 BLS., R/D CEMENT HOSES 1500 1730 2.50 CASING P INT1 R/D LANDING JOINT, CHANGE OUT SLIPS AND ELEVATORS TO DP, INSTALL 7" PACK OFF WITH DRILL PIPE, TEST PACK OFF TO 5000 PSI. Printed 9/9/2013 9:53:30AM Printed 9/9/2013 9:53:30AM North America - ALASKA - BP Page 23 of 29 Operation Summary Report Common Well Name: Z-68 AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: 8/21/2013 X3-013H1-C: DRILL (8,820,870.00) Project: Prudhoe Bay Site: PS Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: 8/26/2013 Rig Contractor: PARKER DRILLING CO. UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 17:30 18:00 0.50 CASING P INT1 PJSM, R/D VOLANT TOOLAND CASING RUNNING EQUIPMENT, CHANGE OUT 7" CASING RAMS TO 2-7/8 TO 5-1/2 VBR RAMS. 18:00 19:00 1.00 CASING N HMAN 9,706.00 INT1 SAFETY STAND DOWN AND INCIDENT INVESTIGATION DUE TO DROPPED OBJECT FROM PIPE BARN TLS, PIPE BARN TLS DOWN UNTL WSP REVISED. TRACTION # 4494767 19:00 00:00 5.00 CASING P INT1 CLEAR FLOOR CASING RUNNING EQUIPMENT, CHANGE OUT TD SAVER SUB, INJECT 2 BBLS MUD DOWN 0/A EVERY HOUR 8/11/2013 00:00 04:00 4.00 CASING P INTI COMPLETE CHANGE OUT OF TOP DRIVE SAVER SUB, TEST BOP RAMS, INJECT DOWN O/A HOURLY 2 BBLS. 04:00 10:00 6.00 CASING N RREP 9,706.00 INTI CLEAN UP RIG FLOOR, PM ON MUD PUMPS 10:00 15:00 5.00 CASING P INTI BREAK DOWN STDS OF 4" HWDP OFF LINE, P/U STAND W/ JARS, PERFORM INJECTIVITY EVERY 2 HRS, PUMP DOWN O/A @ 1 BPM, BREAK DN @ 400 PSI, PUMP .5 BBL, P/U BHA WITH TOOL CRANE. 15:00 17:00 2.00 DRILL P INT1 PJSM, PICK UP PRODUCTION HOLE BHAAS PER SLB DD AND MWD 17:00 20:00 3.00 DRILL P INT1 INSTALL PS-21 SLIPS, RIH F/210' MD TO 3337' MD, SHOLLOW TEST MWD TOOL @ 1000' MD, FILL PIPE EVERY 20 STDS, MONITOR WELL VIATRIP TANK, PERFORM INJECTIVITY EVERY 2 HRS, PUMP DOWN O/A @ 1 BPM, BREAK DN @ 400 PSI, PUMP .5 BBL, P/U BHA WITH TOOL CRANE 20:00 21:00 1.00 DRILL P INT1 RUN D2, D5: WELL KILL DRILL WITH RIG B CREW. 21:00 23:00 2.00 DRILL P INTI RIH F/ 3337' MD TO 4472' MD, MONITOR WELL VIA TRIP TANK. 23:00 00:00 1.00 DRILL P INTI RUN D1, D5 WELL KILL DRILL WITH RIG C CREW. 8/12/2013 00:00 04:00 4.00 DRILL P INT1 RIH WITH 6 1/8 PRODUCTION DRILLASSY, FILL PIPE EVERY 20 STDS, PERFORM INJECTIVITY EVERY 2 HRS, PUMP DOWN O/A @ 1 BPM, BREAK DN @ 400 PSI, PUMP .5 BBL 04:00 07:30 3.50 DRILL P INTI FILL PIPE AND CIRC, OBTAIN SPR ON #1 PUMP, WASH DOWN, TAG FLOAT COLLAR @ 9617' MD, DRILL OUT PLUG AND SHOE TRACK DOWN TO 9697' MD 07:30 09:30 2.00 DRILL P INT1 CBU 2200 STKS, 54 SPM @ 1800 PSI, PUMP HI-VIS SWEEP, DISPLACE WELL TO 8.6 POWER PRO MUD, 53 SPM @ 1800 PSI, OBTAIN NEW SPR ON # 1 MUD PUMP. 09:30 10:30 1.00 DRILL P INTI DRILL SHOE AND 20' OF NEW HOLE F/9697' MD TO 9726' MD. 10:30 11:00 0.50 DRILL P INT1 PULL UP TO CASING SHOE AND CIRC BOTTOMS UP 11:00 11:30 0.50 DRILL P INT1 RIG UP AND PERFORM FIT MUD WEIGHT: 8.6 PPG, 8756' TVD, 9702' MD PUMP 4.73 BBLS TO 1090 PSI, BLEED BACK 2.2 BBLS - FIT EMW = 10.9 PPG 11:30 - 12:00 0.50 DRILL P INT1 LINE UP MUD PUMP TO O/A AND PUMP 10 BBLS OF 12 PPG MUD FOR FREEZE PROTECT Printed 9/9/2013 9:53:30AM North America -ALASKA - BP Operation Summary Report Common Well Name: Z-68 AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: 8/21/2013 X3-013H1-C:DRILL (8,820,870.00 ) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: 8/26/2013 Rig Contractor: PARKER DRILLING CO. UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth (hr) (usft) 12:00 - 16:00 4.00 DRILL P 1600 - 00:00 8.00 DRILL P 8/13/2013 00:00 - 04:00 4.00 DRILL P 04:00 - 05:00 1.00 DRILL P 05:00 06:00 1.00 DRILL P 06:00 06:30 0.50 DRILL P 0630 09:30 3.00 DRILL P 09:30 10:00 0.50 DRILL P 10:00 13:30 3.50 DRILL P 13:30 15:30 2.00 DRILL P 15.30 17:00 1.50 DRILL P 17:00 23:00 6.00 DRILL P 23:00 00:00 1.00 DRILL P 8/14/2013 00:00 02:30 2.50 DRILL P 02:30 03:00 0.50 DRILL P 0300 04:00 1.00 DRILL P Printed 9/9/2013 9:53:30AM Page 24 of 29 Phase Description of Operations PROD1 DRILL 6 1/8" PRODUCTION HOLE FROM 9726' MD TO 9781' MD (8820' TVD) 250 GPM, 1570 PSI ON, 1350 PSI OFF 40 RPM, 5K TORQUE ON, 3K TORQUE OFF PU 180K, SO 150K, ROT 158K SURVEY EVERY -30FT BACKREAM 90 FT PRIOR TO CONNECTIONS MUD WEIGHT: 8.6 PPG IN, 8.6 PPG OUT SIMOPS- FREEZE PROTECT 9-5/8 X 7" OA WITH 63 BBLS OF DIESEL, SHUT IN OA WITH 1000 PSI PROD1 DRILL 6 1/8" PRODUCTION HOLE FROM 9781' MD TO 9995' MD (8965' TVD) 250 GPM, 1570 PSI ON, 1350 PSI OFF 40 RPM, 5K TORQUE ON, 3K TORQUE OFF PU 190K, SO 155K, ROT 160K SURVEY EVERY -30FT BACKREAM 90 FT PRIOR TO CONNECTIONS MUD WEIGHT: 8.6 PPG IN, 8.6 PPG OUT PROD1 DRILL 6 1/8" PRODUCTION HOLE FROM 9995' MD TO 10065' MD (8967' TVD) 250 GPM, 1570 PSI ON, 1350 PSI OFF 40 RPM, 5K TORQUE ON, 3K TORQUE OFF PU 190K, SO 155K, ROT 160K SURVEY EVERY-30FT BACKREAM 90 FT PRIOR TO CONNECTIONS MUD WEIGHT: 8.6 PPG IN, 8.6 PPG OUT PROD1 CIRC BOTTOMS UP FOR TRIP OUT OF HOLE TO CHECK BIT 4.5 DEG BEHIND @ 9998 9.5 DEG BEHIND @ BIT 9.67 FT LOW LAST SURVEY 14.5 FT LOW PROJECTED @ BIT PROD1 POH TO CASING SHOE 9686' MD, FLOW CHECK WELL= STATIC, PUMP DRY JOB POH ON HOOK PROD1 PUMP 9.8 PPG DRY JOB, 20 BBLS PRODi POH F/9686' MD TO 5038' MD, PU=117K, SO= 106K, MONITOR HOLE VIA TRIP TANK PROD1 RIG SERVICE PROD1 POH F/5038' MD TO 210' MD, PU=60K, SO=58K, MONITOR WELL FOR 10 MIN = STATIC PROD1 POH WITH BHAAND LAY/DN SAME PROD1 CLEAN AND CLEAR RIG FLOOR, PULL WEAR RING AND INSTALLTEST PLUG, RIG UP TEST EQUIPMENT TO TEST BOP EQUIPMENT PROD1 PJSM, TEST BOPE AS PER AOGCC REQUIREMENTS 250PSI LOW/ 5 MIN, 3500 PSI HIGH/SMIN, WITNESS WAIVED BY JEFF TURKINTON @ 07:19 8/13/2013 PROD1 RIG DOWN ALL TEST EQUIPMENT AND LINES PROD1 PJSM, PICK UP BHA# 5, MAKE UP BIT AND MOTOR, PJSM LOAD RADIOACTIVE SOURCE AS PER MWD PROD1 CONT, M/U BHA, INSTALL PS -21 SLIPS PROD1 TIH F/209' MD TO 1350' MD, P/U=57K, S/O=57K, MONITOR HOLE WITH TRIP TANK North America - ALASKA - BP Page 25 of 29 Operation Summary Report Common Well Name: Z-68 AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: 8/21/2013 X3 -013H1 -C: DRILL (8,820,870.00 ) Project: Prudhoe Bay Site: PB Z Pad Description of Operations Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00,00AM Rig Release: 8/26/2013 Rig Contractor: PARKER DRILLING CO. UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) DRILL 6 1/8" PRODUCTION HOLE FROM 10067' Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations PUMPS (hr) DRILL (usft) DRILL 6 1/8" PRODUCTION HOLE FROM 10067' 04:00 04:30 0.50 DRILL P PROD1 SHALLOW TEST MWD TOOL, PUMP 52 SPM @ 40 RPM, 1 O TORQUE ON, 8K TORQUE OFF 1000 PSI, 220 GPM, ROT 20 RPM, TEST GOOD 0430 12:00 7.50 DRILL P PROD1 TIH F/1350' MD TO 9686' MD, FILL PIPE EVERY BACKREAM 90 FT PRIOR TO CONNECTIONS MUD WEIGHT: 8.7 PPG IN, 8.7 PPG OUT 20 STDS, P/U=180K, S/0=150K 12:00 12:30 0.50 DRILL P PROD1 FILL PIPE, MONITOR WELL 10 MIN=STATIC 12:30 15:30 3.00 DRILL P PROD1 HANGE OFF BLOCKS, SLIP AND CUT DRILL 250 GPM, 1650 PSI ON, 1550 PSI OFF 40 RPM, 1 OK TORQUE ON, 8K TORQUE OFF LINE, CALIBRATE BLOCKS 1530 16:00 0.50 DRILL P PROD1 SERVICE RIG 16:00 17:00 1.00 DRILL P PROD1 TIH TO BOTTOM F/9686' MD TO 10067MD Printed 9/9/2013 9:53:30AM P/U=185K, S/0=155K, OBTAIN SPR ON BOTH PUMPS 17:00 00:00 7.00 DRILL P PROD1 DRILL 6 1/8" PRODUCTION HOLE FROM 10067' MD TO 10253' MD (9032' TVD) 250 GPM, 1630 PSI ON, 1550 PSI OFF 40 RPM, 1 O TORQUE ON, 8K TORQUE OFF PU 188K, SO 148K, ROT 162K SURVEY EVERY -30 FT BACKREAM 90 FT PRIOR TO CONNECTIONS MUD WEIGHT: 8.7 PPG IN, 8.7 PPG OUT CROSSED FAULT @ 9925'MD (8924 TVD) 8/15/2013 00:00 12:00 12.00 DRILL P PROD1 DRILL 6 1/8" PRODUCTION HOLE FROM 10253' MD TO 10450' MD (9000' TVD) 250 GPM, 1650 PSI ON, 1550 PSI OFF 40 RPM, 1 OK TORQUE ON, 8K TORQUE OFF PU 193K, SO 144K, ROT 161 K SURVEY EVERY -30 FT BACKREAM 90 FT PRIOR TO CONNECTIONS MUD WEIGHT: 8.7 PPG IN, 8.7 PPG OUT -OBTAIN SPR ON BOTH MUD PUMPS 12:00 23:00 11.00 DRILL P PROD1 DRILL 6 1/8" PRODUCTION HOLE FROM 10253' MD TO 10537' MD (8733' TVD) 250 GPM, 1650 PSI ON, 1550 PSI OFF -40 RPM, 1 O TORQUE ON, 8K TORQUE OFF PU 193K, SO 144K, ROT 161 K SURVEY EVERY -30 FT BACKREAM 90 FT PRIOR TO CONNECTIONS MUD WEIGHT: 8.7 PPG IN, 8.7 PPG OUT -OBTAIN SPR ON BOTH MUD PUMPS 23:00 - 00:00 1.00 DRILL N DPRB 10,350.00 PROD1 WORK TIGHT HOLE F/ 10538' MD TO 10350' MD, PICK UP TO MAKE HOOK AND COULD NOT GET BACK TO BOTTOM, LOSING GROUND EACH TIME PIPE IS MOVED UP HOLE, MOVEMENT DOWN WOULD STACK OUT ON BIT WTAND STALL MOTOR. 8/16/2013 00:00 02:00 2.00 DRILL N DPRB 10,350.00 PROD1 POH, PUMP OUT OF HOLE F/ 10,450' MD TO 9675' MD, 58 SPM @ 1450 PSI, 250 GPM, P/U=190K, S/0= 144K 02:00 02:30 0.50 DRILL N DPRB 10,350.00 PROD1 FLOW CHECK WELL 10 MIN=STATIC, PUMP DRY JOB 9.7 PPG -17 BBLS 02:30 09:30 7.00 DRILL N DPRB 10,350.00 PROD1 POH F/9675' MD TO 225' MD, P/U=133K, S/0=116K, PREFORM D1 KICK WHILE TRIPPING DRILL 0930 11:30 2.00 DRILL N DPRB 10,350.00 PROD1 FLOW CHECK WELL 10 MIN =STATIC, PJSM FOR REMOVING RADIOACTIVE SOURCE, L/D BHA, BIT MISSING 3 CONES 11:30 12:00 0.50 DRILL N DPRB 10,350.00 PROD1 CLEAN AND CLEAR FLOOR 12:00 12:30 0.50 DRILL N DPRB 10,350.00 PROD1 RIG SERVICE Printed 9/9/2013 9:53:30AM North America - ALASKA - BP Page 26 of 29 Operation Summary Report Common Well Name: Z-68 AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: 8/21/2013 X3 -0131-11-C: DRILL (8,820,870.00 ) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00 OOAM Rig Release: 8/26/2013 Rig Contractor: PARKER DRILLING CO. UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 12:30 - 21:30 9.00 DRILL N DPRB 10,350.00 PROD1 WAIT ON NEW SLB BHA FOR OPEN HOLE Printed 9/9/2013 9.53:30AM SIDETRACK, CORRECTIVE AND PREVENTITIVE MAINTANCE ON RIG WHILE WAITING ON TOOLS. 21:30 - 23:00 1.50 DRILL N DPRB 10,350.00 PROD1 LOAD BHA INTO PIPE BARN AND STRAP, SET UP AND CALIBRATE SMART TOOLS. 23:00 00:00 1.00 DRILL N DPRB 10,350.00 PROD1 PJSM, PICK UP MOTOR, BIT AND SET UP AND CALIBRATE SMART TOOLS 8/17/2013 0000 - 03:30 3.50 DRILL N DPRB 10,350.00 PROD1 SET UP AND CALIBRATE SMART TOOLS, SCRIB TOOLS. 03:30 04:00 0.50 DRILL N DPRB 10,350.00 PROD1 COMPLETE PICKUP OF BHA 0400 04:30 0.50 DRILL N DPRB 10,350.00 PROD1 RIH WITH BHA # 6 F/ 179' MD TO 1300' MD 04:30 - 07:00 2.50 DRILL N DPRB 10,350.00 PROD1 INSTALL PS -21 SLIPS, ATTEMPT SHALLOW HOLE TEST, CHANGE OUT SLS SENSOR ON STAND PIPE IN DERRICK. 0700 08:00 1.00 DRILL N DPRB 10,350.00 PROD1 RIH F/1300' MD TO 1785' MD 08:00 - 09:00 1.00 DRILL N DPRB 10,350.00 PROD1 PERFORM SHALLOW HOLE TEST, 52 SPM @ 145 PSI 220 GPM, 60 SPM @ 900 PSI 250 GPM 0900 15:00 6.00 DRILL N DPRB 10,350.00 PROD1 RIH F/ 1785' MD TO 9657' MD FILL PIPE EVERY 20 STDS 1500 16:30 1.50 DRILL N DPRB 10,350.00 PRODI PUMP 30 BBLS STEEL LUB SWEEP @ SHOE, ROTATE AND RECIPRICATE PIPE, DUMP SWEEP AT SURFACE 16:30 18:00 1.50 DRILL N DPRB 10,350.00 PROD1 RIH F/ 9657' MD TO 10064' MD, SURVEY EVERY 30', 59 SPM/ 250 GPM @ 3330 PSI, OBTAIN SPR @ 10035' MD END PBI WELLBORE. BEGIN Z-68 WELLBORE. SEE REPORT "2413" FOR REMAINDER OF 24 TIME SUMMARY FOR 8/17/2013 18:00 00:00 6.00 DRILL N DPRB 10,350.00 PROD1 END WELLBORE Z-68PB1. BEGIN NEW WELLBORE Z-68. SEE "24A" REPORT FOR 00:00-18:00 TIME SUMMARY FOR 8/17/2013 KICK-OFF SIDETRACK AT 10,065' MD. TRENCH AND TIME DRILL PER SLB DD PLAN FROM 10065' MD TO 10080' MD. 8/18/2013 00:00 11:30 11.50 DRILL N DPRB 10,350.00 PROD1 DRILL AND SLIDE TO SIDE TRACK WELL F/10080' MD TO 101 30'MD DRILL 6 1/8" PRODUCTION HOLE FROM 10080' MD TO 10201' MD (9062' TVD) 250 GPM, 1350 PSI ON, 1300 PSI OFF 20 RPM, 7K TORQUE ON, 7K TORQUE OFF PU 190K, SO 148K, ROT 162K SURVEY EVERY -30 FT MUD WEIGHT: 8.7 PPG IN, 8.7 PPG OUT UNABLE TO MAKE FURTHER FOOTAGE. TRIP TO INSPECT BIT & MOTOR. 11:30 12:00 0.50 DRILL N DFAL 10,201.00 PROD1 OBTAIN SPR ON BOTH PUMPS 1200 1300 1.00 DRILL N DFAL 10,201.00 PROD1 POH F/ 10201'MD TO 10036' MD, OBTAIN SURVEYS AS PER MDW 13:00 14:30 1.50 DRILL N DFAL 10,201.00 PROD1 POH ON ELEVATORS F/ 10036' MD TO 9657' MD, MONITOR WELL @ CASING SHOE 10 MIN=STATIC. PUMP DRY JOB 14:30 19:00 4.50 DRILL N DFAL 10,201.00 PROD1 POH F/9657' MD TO 1878' MD, MONITOR WELL 10 MIN=STATIC PRIOR TO PULLIING HWDP. Printed 9/9/2013 9.53:30AM North America - ALASKA - BP Operation Summary Report Page 27 of 29 Common Well Name: Z-68 AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: 8/21/2013 X3 -0131-11-C: DRILL (8,820,870.00 ) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: 8/26/2013 Rig Contractor: PARKER DRILLING CO. LAY DN BHA, UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) DRILL N Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 19:00 - 20:30 1.50 DRILL N DFAL 10,201.00 PROD1 POH ON ELEVATORS F/1878' MD TO 300' MD, Printed 9/9/2013 9:53:30AM MONITOR WELL 10 MIN=STATIC PRIOR TO LAY DN BHA, 20:30 22:00 1.50 DRILL N DFAL 10,201.00 PROD1 PJSM W/ SLB DD AND MWD, L/D BHA # 6 L/D MWD PULSE, MOTOR LEAKING MUD AROUND BIT BOX (SEAL PACK) 22:00 00:00 2.00 DRILL N DFAL 10,201.00 PROD1 PJSM W/ SLB DD AND MWD, P/U BHA # 7 P/U MWD PULSE 8/19/2013 00:00 02:30 2.50 DRILL N DFAL 10,201.00 PROD1 ADJUST BEND ON MOTOR TO 2.38, TIH WITH BHA, CHANGE OUT JARS IN HWDP. 02:30 05:00 2.50 DRILL N DFAL 10,201.00 PROD1 TIH F/ 1887' MD TO 1950' MD 05:00 0530 0.50 DRILL N DFAL 10,201.00 PROD1 PERFORM SHALLOW TEST FOR MWD, 59 SPM/250 GPM @ 1950 PSI 0530 06:00 0.50 DRILL N DFAL 10,201.00 PROD1 TIH F/ 1950' MD TO 2450' MD 06:00 06:30 0.50 DRILL N DFAL 10,201.00 PROD1 D1 DRILL KICK WHILE TRIPPING WITH A CREW / AAR 0630 12:00 5.50 DRILL N DFAL 10,201.00 PROD1 TIH F/ 2450'MD TO 9665' MD, FILL PIPE EVERY 20 STDS, MONITOR WELL=STATIC 12:00 13:30 1.50 DRILL N DFAL 10,201.00 PROD1 TIH F/ 9665' MD TO 10040, ORIENT TO LOW SIDE AND SLIDE THROUGH SIDE TRACK, TIH TO 10201' MD. OBTAIN SPR'S BOTH PUMPS, P/U=190K, S/0=145K 1330 16:30 3.00 DRILL N DPRB 10,350.00 PROD1 DRILL F/ 10201' MD TO 10233' MD, WORK TIGHT HOLE @ 10205' MD, PACKING OFF DRILL STRING @ 10233' MD 16:30 17:30 1.00 DRILL N DPRB 10,233.00 PROD1 WORK TIGHT HOLE AND TROUBLE SHOOT DOWNHOLE PROBLEMS 17:30 18:00 0.50 DRILL N DPRB 10,233.00 PROD1 POH F/ 10233' MD TO 9658' MD MONITOR WELL AT SHOE= STATIC 18:00 - 00:00 6.00 DRILL N DPRB 10,233.00 PROD1 POH F/ 9658' MD TO 1900' MD, MONITOR WELL 10 MIN=STATIC BEFORE PULLING HWDP. 8/20/2013 00:00 01:30 1.50 DRILL N DPRB 10,233.00 PROD1 PULL OUT OF HOLE WITH 6-1/8" DRILLING ASSEMBLY FROM 1320' MD AT MIDNIGHT TO BHAAT 186' MD. FLOWCHECK WELL PRIOR TO PULL BHA INTO STACK (STATIC) - STATIC).01:30 01 30 02:30 1.00 DRILL N DPRB 10,233.00 PROD1 RACK BACK COLLARS AND LAYDOWN 6-1/8" DRILLING ASSEMBLY (BHA #7) FROM 186' MD TO SURFACE, MISSING BIT AND PART OF MOTOR. - FISH DESCRIPTION, SEE ATTACHED DIAGRAM: HUGHES VM-RISDVHX6-1/8" INSERT TRI -CONE BIT (0.6' LENGTH) + LOWEST 2.09' SECTION OF POWERPAK MUD MOTOR (BIT BOX, BEARING HOUSING/STABILIZER SLEEVE, & OFFSET HOUSING). FACING UP = V040 PIN CONNECTION + -0.6' TRANSMISSION COUPLING. TOP OF FISH ESTIMATED AT 10230' MD. - MOTOR SENT INTO SLB FOR FAILURE ANALYSIS 02:30 03:00 0.50 DRILL P PROD1 PERFORM DERRICK INSPECTION 03:00 03:30 0.50 BOPSUR P PROD1 PERFORM WEEKLY FUNCTION TEST OF ALL BOP STACK COMPONENTS. Printed 9/9/2013 9:53:30AM North America - ALASKA - BP Operation Summary Report Common Well Name: Z-68 AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: 8/21/2013 X3 -0131-11-C: DRILL (8,820,870.00) Page 28 of 29 Project: Prudhoe Bay Site: PBZ Pad ,I, Rig Name/No.: PARKER 273 Spud Daterrime: 7/27/2013 7:00:OOAM Rig Release: 8/26/2013 Rig Contractor: PARKER DRILLING CO. UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Date From - To I Hrs Task Code NPT NPT Depth Phase Description of Operations - -- - — - - 03:30 11:30 Sh00 DRILL N DPR13 ,233. 10,233.00 i PROD1 WAIT ON ORDERS: DEVELOP PLAN FORWARD WITH ANCHORAGE ENGINEERING AND SUBSURFACE TEAMS. MONITOR WELL WITH CONSTANT CIRCUALTION ACROSS TOP, LOSSES = 1 BPH DECISION TO PERFORM CLEANOUT RUN, RUN 4-1/2" SHORT DRILLING LINER, RUN TUBING AND MOVE OFF. CTD WILL MOVE IN TO DRILL FINAL PRODUCTION HOLE. 11:30 1200 0.50 DRILL N DPRB 10,233.00 PROD1 MAKEUP AND RUN IN HOLE WITH 6-1/8" CLEANOUT ASSEMBLY (BHA#8) FROM SURFACE TO OVERALL LENGTH AT 103' MD. - SMITH XR-20 6-1/8" INSERT TRI -CONE BIT, (1) STAND FLEX DRILL COLLARS, (3) STANDS HWDP, DRILLING JARS 12:00 20:00 8.00 DRILL N DPRB 10,233.00 PROD1 TRIP IN HOLE WITH 6-1/8" CLEANOUT ASSEMBLY FROM BHA AT 103' MD TO 7" INTERMEDIATE CASING SHOE AT 9703' MD. FILL PIPE EVERY 20 STANDS 2000 21:00 1.00 DRILL N DPRB 10,233.00 PROD1 CIRCULATE SURFACE TO SURFACE VOLUME, 325 BBLS, AT 7" CASING SHOE. DUMP AND DILUTE ACTIVE MUD SYSTEM WITH 300 BBLS NEW 8.6 PPG POWERPRO MUD. RECORD SLOW PUMP RATES. - 250 GPM, 950 PSI, NO LOSSES, MW IN/OUT = 8.7 PPG - PU WEIGHT = 185 KLBS, SO = 147 KLBS, ROT (20 RPM, 6 KFT-LBS) = 157 KLBS 21:00 21:30 0.50 DRILL N DPRB 10,233.00 PROD1 RUN IN HOLE WITH 6-1/8" CLEANOUT ASSEMBLY ON ELEVATORS FROM 7" CASING SHOE AT 9703' MD TO 10210' MD, 30-60 FPM (MAX DEPTH DESIRED FOR PLANNED LINER RUN TO ACCOMODATE FUTURE COIL SIDETRACK). NO ISSUES ENCOUNTERED IN OPENHOLE FINAL SLACKOFF WEIGHT = 145 KLBS, PU = --- — --- - 193 KLBS 21:30 22:00 0.50 DRILL I N DPRB 10,233.00 PROD1 CIRCULATE ONE DRILLSTRING + OPENHOLE VOLUME, 120 BBLS, WHILE RECIPROCATING 'PIPE 20' 250 GPM, 960 PSI 2200 0000 2.00 DRILL N DPRB 10,233.00 PROD1 PULL OUT OF THE HOLE WITH 6-1/8" CLEANOUT ASSEMBLY ON ELEVATORS FROM 10210' MD TO 7500' MD AT MIDNIGHT. - NO ISSUES ENCOUNTERED IN OPENHOLE HOLE TAKING CORRECT FILL DRIFT DRILLPIPE WITH 2.39" OD RABBITAT 7" SHOE_ 8/21/2013 00:00 03:30 3.50 DRILL N DPRB 10,233.00 PROD1 PULL OUT OF THE HOLE WITH 6-1/8" CLEANOUT ASSEMBLY ON ELEVATORS, RACKING BACK 4" DRILLPIPE, FROM 7500' MD AT MIDNIGHT TO TOP OF HWDP AT 1805' MD. _ 03:30 04.30 1.00 DRILL N DPRB 10,233.00 PROD1 LAYDOWN 3 STANDS 4" HWDP FROM 1805' MD TO 1527' MD. RECOVER DRILLPIPE DRIFT IN JARS. 04:30 0500 0.50 DRILL N DPRB 10,233.00 PROD1 PULL OUT OF THE HOLE WITH 6-1/8" CLEANOUT ASSEMBLY ON ELEVATORS, RACKING BACK 4" DRILLPIPE, FROM 1527' MD TO BHAAT 103' MD. FLOWCHECK WELL PRIOR TO PULL BHA INTO STACK Printed 9/9/2013 9:53:30AM Printed 9/9/2013 9,53:30AM North America - ALASKA - BP Page 29 of 29 Operation Summary Report Common Well Name: Z-68 AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: 8/21/2013 X3-013H1-C:DRILL (8,820,870.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00 OOAM Rig Release: 8/26/2013 Rig Contractor: PARKER DRILLING CO. UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Date From- To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 05:00 - 06:00 1.00 DRILL N DPRB 10,233.00 PROD1 LAYDOWN (1) STAND DRILL COLLARS AND 6-1/8" CLEANOUT ASSEMBLY FROM 03' MD TO SURFACE. GRADE BIT 2 -3 -IN GUAGE. END DON EVENT WITH PARKER 273 RIG AT 06:00. BEGIN COMPLETION EVENT. Printed 9/9/2013 9,53:30AM North America - ALASKA - BP Operation Summary Report Page 1 of 8 Common Well Name: Z-68 AFE No Event Type: COM- ONSHORE (CON) Start Date: 8/21/2013 End Date: 8/26/2013 X3 -013H1 -C: DRILL (3,080,009.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: 8/26/2013 Rig Contractor: PARKER DRILLING CO. UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 8/21/2013 06:00 - 06:30 0.50 CASING P RUNPRD BEGIN CON EVENT WITH PARKER 273 RIG AT 06:00 ON 8/21/2013 CLEAR RIG FLOOR AFTER TRIPPING 06:30 09 30 3.00 CASING P RUNPRD 'RIG UP TO RUN 4-1/2" LINER AND HOLD PJSM WITH RIG TEAM. 09:30 12:00 2.50 CASING P RUNPRD MAKEUPAND RUN IN HOLE WITH 4-1/2", 12.6#, 13CR, HYD521 PRODUCTION LINER FROM SURFACE TO LINER OALAT 685' MD. - CHECK FLOATS (PASS). BAKER -LOC SHOE TRACK SHOE. APPLY JET LUBE SEAL GUARD TO ALL HYD521 CONNECTIONS - (1) OMD CENTRALIZER LOCKED DOWN MID -JOINT #2, (2) OMD CENTRALIZERS INSTALLED ON JOINTS 3-11 WITH LOCK RING MID JOINT. FILL LINER EVERY JOINTAND TOP OFF EVERY 10 JOINTS RUN. - 12:00 13:30 1.50 CASING P RUNPRD !MAKEUP LINER HANGER. BAKER REPADD PAL -MIX TO HANGER ASSEMBLY. CROSSOVER TO 4" DRILLPIPE AND MAKEUP _FRIST STAND. 13:30 14:00 0.50 CASING P RUNPRD tCIRCULATE ONE LINER VOLUME, 10 BBLS 168 GPM, 76 PSI 14:00 22:00 8.00 CASING P RUNPRD RUN IN HOLE WITH 4-1/2" LINER ASSEMBLY ON 4" DRILLPIPE FROM 800' MD TO 7" CASING SHOE AT 9703' MD, 1 MIN/STAND, FILLING PIPE EVERY 15 STANDS. 2.2:00 23 00 1.00 CASING P RUNPRD STAGE UP PUMPS FROM 1 BPM TO 6 BPM. CIRCULATE ONE SURFACE TO SURFACE VOLUME, 325 BBLS 254 GPM, 650 PSI, 12% RETURN FLOW 23:00 00:00 1.00 CASING N WAIT 10,233.00 RUNPRD WAIT ON SPINE ROAD TO CLEAR FOR CEMENT AND FLUID TRANSPORT TRUCKS (DOYON 16 IMPASSABLE). - 4-1/2" LINER PARKED AT 7" CASING SHOE. INSTALL FOSV AND MONITOR WELL WITH CONTINUOUS HOLE FILL (STABLE, NO LOSSES) 22:30: DOYON 16 PULLED OUT OF HOLE IN ROAD. NOTIFY SLB CEMENTERS AND CH2MHILL FLUID TRUCKS TO STAGE ON J PAD 23:30: DOYON 16 LAYING RIGS MATS CC2A TO J PAD PRIOR TO MOVING RIG 8/22/2013 00:00 12:00 12.00 CASING N WAIT 10,233.00 RUNPRD WAIT ON SPINE ROAD TO CLEAR FOR CEMENT AND FLUID TRANSPORT TRUCKS (DOYON 16 IMPASSABLE). 4-1/2" LINER PARKED AT 7" CASING SHOE. MONITOR WELL WITH CONTINUOUS HOLE FILL (STABLE, NO LOSSES) - 02:30: DOYON 16 BEGINS MOVING TOWARDS J PAD FROM CC2A ON RIG MATS -10:30-12:00: CIRCULATE 1.5 SURFACE TO SURFACE VOLUMES; 254 GPM, 655 PSI Printed 9/9/2013 9:54:49AM Printed 9/9/2013 9:54:49AM North America - ALASKA - BP Page 2 of 8 Operation Summary Report Common Well Name: Z-68 AFE No Event Type: COM- ONSHORE (CON) Start Date: 8/21/2013 End Date: 8/26/2013 X3-013H1-C:DRILL (3,080,009.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: 8/26/2013 Rig Contractor. PARKER DRILLING CO. UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Date From - To Hrs Task Code NPT li NPT Depth Phase Description of Operations -- +_ (hr) — -;-- (usft) 12:00 - 12:30 0.50 CASING P RUNPRD RUN IN HOLE WITH 4-1/2" PRODUCTION LINER ON 4" DRILLPIPE FROM 7" CASING SHOE AT 9703' MD TO PLANNED LINER SET DEPTH AT 10210' MD. NO ISSUES ENCOUNTERED IN OPENHOLE FINAL PICKUP WEIGHT = 180 KLBS, I SLACKOFF = 150 KLBS (PARKER 273 BLOCKS -- -� - = 35 KLBS 1230 1630 4.00 CASING P RUNPRD CIRCULATE ONE OPENHOLE VOLUME, 9 BBLS, AT 2 BPM. STAGE UP PUMPS TO 6 BPM. CIRCULATE HOLE CLEAN AND CONDITION MUD PRIOR TO CEMENTING. 4 BOTTOMS UP, 920 BBLS 254 GPM, 800 PSI, RECIPROCATING 5' STROKES AT SURFACE - MW IN/OUT = 9.6 PPG, PV = 4 CPYP = 13 LB/100 FTA2 MIRU SCHLUMBERGER CEMENTERS WHILE CIRCULATING. HOLD PJSM. FILL LINES WITH FRESH WATER AND PRESSURE TEST LINES TO 250 PSI LOW AND 4500 PSI HIGH FOR FIVE MIN EACH TO LEAKTIGHT CRITERIA (PASSING TESTS). - 16:11: BATCH MIX TAIL CEMENT. Printed 9/9/2013 9:54:49AM Common Well Name: Z-68 Event Type: COM- ONSHORE (CON) Project: Prudhoe Bay Rig Name/No.: PARKER 273 Rig Contractor. PARKER DRILLING CO. Active datum: Z-68 P273 ACTUAL @102.82usft (at North America - ALASKA - BP Page 3 of 8 Operation Summary Report Start Date: 8/21/2013 End Date. 8/26/2013 Site: PB Z Pad Spud Date/Time: 7/27/2013 7:00:OOAM Mean Sea Level) AFE No X3-013H1-C.DRILL (3,080,009.00 ) Rig Release: 8/26/2013 UWI:500292349300 Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations — (hr) (usft) _ _ � 16.30 18:30 2.00 CEMT P RUNPRDCEMENT 4-1/2" PRODUCTION LINER AS FOLLOWS (SEE ATTACHED DOCUMENTATION) PUMP 30 BBLS OF 10 PPG MUDPUSH II SPACER @ 5 BPM, 725 PSI ICP, 577 PSI FCP, RECIPROCATING 5' STROKES PUMP 26 BBLS (95 SACKS) OF 15.8 PPG CLASS G TAIL @ 5 BPM, EXCESS VOLUME 40% (YIELD 1.54 CU.FT/SK), RECIPROCATING 5' STROKES - DROP DRILL PIPE WIPER DART PERFORM DISPLACEMENT WITH RIG PUMPS, 8.6 PPG POWERPRO MUD, RECIPROCATING 5'STROKES 102 BBLS DISPLACED AT 6 BPM: ICP 100 PSI, FCP 1079 PSI - 4 BBLS DISPLACED AT 4 BPM: ICP 800 PSI, FCP 855 PSI 6 BBLS DISPLACED AT 2 BPM, ICP 715 PSI. BUMP PLUG ON CALCULATED BBLS AT 780 PSI, TOTAL 112 BBLS PUMPED, CEMENT IN PLACE AT 17:10 INCREASE PRESSURE TO 3950 PSI TO SET HANGER AFTER PLUG BUMP. HOLD FOR FIVE MIN. SLACK OFF 80K TO CONFIRM HANGER SET BLEED OFF PRESSURE TO CHECK FLOATS (HOLDING) - PU 12' TO EXPOSE DOG SUB AND SET DOWN ON LINER TOP. WEIGHT SET PACKER WITH 80 KLBS BREAK OFF CEMENT LINER. MAKEUP TOP DRIVE. APPLY 800 PSI TO DRILLPIPE. PU TO REMOVE RS PACK -OFF. OBSERVE PRESSURE DROP. CONTINUE TO PICKUP ABOVE TOL AND MARK NO-GO DEPTH CIRCULATE BOTTOMS UP, 300 BBLS (500 GPM, 1500 PSI ICP, 1325 PSI FCP, RECIPROCATING 10' STROKES). DUMP MUD 'PUSH AND 10 BBLS EXCESS CEMENT RETURNS OVERBOARD. FULL RETURNS THROUGHOUT JOB FIELD PICK TOC = TOP OF LINER AT 9525' MD. FINAL LINER SET DEPTH = 10210' MD, 9063' TVD LINER TOP AT 9525' MD, 8611' TVD WELL PBTD (LINER LANDING COLLAR) _ j 1 10126' MD, 9033' TVD 18 30 19:30 1.00 CEMT P RUNPRD I DOWN CEMENT HEAD AND DRILLPIPE DOUBLE. LINEUP TO DISPLACE WELL. 19:30 21:30 2.00 CASING P RUNPRD 1 DISPLACE WELL ABOVE LINER TOP TO CLEAN 8.6 PPG BRINE MAX PRESSURE = 2200 PSI, FCP = 1880 PSI MONITOR WELL PRIOR TO PULLING OUT OF HOLE (STATIC). CLEAN SHAKER BEDS AND - — --- TROUGHS. Printed 9/9/2013 9:54:49AM Common Well Name: Z-68 Event Type: COM- ONSHORE (CON) North America - ALASKA - BP Page 4 of 8 Operation Summary Report AFE No Start Date: 8/21/2013 End Date: 8/26/2013 X3-013H1-C:DRILL (3,080,009.00 ) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: 8/26/2013 Rig Contractor: PARKER DRILLING CO. UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations --- --- 21:30 - - - 00:00 2.50 CASING P i RUNPRD PULL OUT OF HOLE WITH LINER RUNNING I I TOOLS FROM TOL AT 9525' MD TO 5200' MD AT MIDNIGHT, RACKING BACK 4" DRILLPIPE. INITIAL PICKUP WEIGHT = 170 KLBS, ---_ __ SLACKOFF = 145 KLBS 8/23/2013 00:00 - 03:30 3.50 CASING P RUNPRD PULL OUT OF THE HOLE WITH LINER RUNNING TOOLS FROM 5200' MD AT MIDNIGHT TO SURFACE. FLOWCHECK WELL ON LAST STAND OF DRILLPIPE (STATIC). 03:30 - 04:00 0.50 CASING P RUNPRD LAYDOWN BAKER LINER RUNNING TOOLS. CONFIRM ROTATING DOG SUB IS SHEARED. 04:00 06:00 2.00 EVAL P RUNPRD MIRU SCHLUMBERGER E -LINE UNIT. LOAD TOOLS TO RIG FLOOR. MAKEUP TOOLSTRING AND PERFORM TOOL CHECKS. 06:00 - 15:00 9.00 EVAL P RUNPRD RUN IN HOLE WITH MSIP/USIT LOGGING TOOLS (FOR EVALUATION OF 7" CASING CEMENT JOB). LOG MSIP/USIT FROM 9400' MD TO 2000' MD. LOG PDC GR/CCL FROM 9400' MD TO SURFACE. FIELD PICK TOC = 4300' MD (SATISFACTORY FOR GP 10-60 ZONAL ISOLATION). RECEIVE APPROVAL TO PROCEED WITH OPERATIONS FROM ODE. i - SIMOPS: LAYDOWN 4" DRILLPIPE WITH j OFFLINE STANDBUILDING EQUIPMENT 15:00 16:30 1.50 EVAL P RUNPRD BREAKDOWN TOOLSTRING AND LOWER TOOLS OFF RIG. RDMO SCHLUMBERGER E -LINE. 16:30 19:00 2.50 CASING P RUNPRD PRESSURE TEST 4-1/2" PRODUCTION LINER AND LINER LAP TO 250 PSI LOW FOR FIVE MIN AND 3500 PSI HIGH FOR 30 MIN (PASSING TESTS, SEE ATTACHED DOCUMENTATION). RECEIVE APPROVAL FROM WELLS TEAM _ _ LEADER TO PROCEED WITH OPERATIONS. 19:00 19:30 0.50 WHSUR P RUNCMP PULL WEAR BUSHING 19:30 21 00 1.50 RUNCOM P RUNCMP RIG UP TO RUN 4-1/2" TUBING. HOLD PJSM. SIMOPS: PERFORM DUMMY RUN WITH LANDING JOINTAND TUBING HANGER. TAG AT 42' MD. 21:00 00:00 3.00 RUNCOM P RUNCMP RUN 4-1/2", 12.6#, 13CR-85, VAMTOP COMPLETION ASSEMBLY FROM SURFACE TO 1680' MD AT MIDNIGHT. - BAKERLOK ALL CONNECTIONS BELOW HES TNT PRODUCTION PACKER - APPLY JET LUBE SEAL GUARD TO ALL OTHER VAMTOP VONNECTIONS TORQUE EACH VAMTOP CONNECTION TO OPTIMUM 4440 FT -LBS Printed 9/9/2013 9:54:49AM North America - ALASKA - BP Operation Summary Report Common Well Name: Z-68 AFE No Event Type: COM- ONSHORE (CON) Start Date: 8/21/2013 End Date: 8/26/2013 X3 -013H1 -C. DRILL (3,080,009.00 ) Page 5 of 8 Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: 8/26/2013 Rig Contractor: PARKER DRILLING CO. UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr)(usft) - - - - ---. 8/24/2013 00:00 11:00 11.00 RUNCOM P . RUNCMP RUN 4-1/2", 12.6#, 13CR-85, VAMTOP COMPLETION ASSEMBLY FROM 1680' MDAT MIDNIGHT TO TAG TOP OF LINER TIE -BACK RECEPTACLE ON DEPTH AT 9525' MD. ROTATE STRING TWO TURNS WITH ELEVATORS AND CONTINUE IN HOLE TO TBR NO-GO AT 9536' MD (27.26' DOWN ON JOINT #219). APPLY JET LUBE SEAL GUARD TO ALL OTHER VAMTOP VONNECTIONS TORQUE EACH VAMTOP CONNECTION TO OPTIMUM 4440 FT -LBS - 8 GAS -LIFT MANDRELS, 4'X' NIPPLES, (1) HES PRODUCTION PACKER 11:00 1330 2.50 RUNCOM P RUNCMP SPACEOUT AND LAND 4-1/2", 12.6#, 13CR-85, VAMTOP COMPLETION ASSEMBLY AS FOLLOWS: LAYDOWN JOINTS 219, 218, & 217. MAKEUP 19.39' PUP, JOINT 217 & HANGER/PUP (FMC 11" X 4" TC -II TC -IA -EMS WITH 4" TYPE H BPV PROFILE). RUN IN HOLE ON TC -II LANDING JOINTAND LAND STRING AT 9531' MD, 5' ABOVE NO-GO. LAYDOWN LANDING JOINT. FMC REPRESENTATIVE ON LOCATION TO RUN IN ALL LOCKDOWN SCREWS. PARKER 273 RKB TO UPPER LOCKDOWN SCREWS = 41.66' MD. FINAL PICKUP WEIGHT = 142 KLBS, SLACKOFF = 120 KLBS, PARKER 273 BLOCKS = 35 KLBS FINAL TUBING LANDING DEPTH = 9531' MD (WLEG 6' INTO LINER TOP TBR) HES TNT 7" X 4-1/2" PERMANENT PRODUCTION PACKER AT 9409' MD DCK-2 SHEAR VALVE INSTALLED IN GLM #7 AT 4955' MD - DEEPEST'X' NIPPLE AT 9515' MD HAS RHC -M PLUG INSTALLED 13 30 16.00 2.50 RUNCOM P RUNCMP LINE UP DOWN IAAND AND REVERSE CIRCULATE IN NEW 8.6 PPG BRINE AT 170 GPM AS FOLLOWS: - 147 BBLS CLEAN 110 OF 8.6 PPG BRINE ON TUBING SIDE FROM WLEG TO SURFACE AND ON IA SIDE FROM WLEG TO PACKER - 83 BBLS CLEAN 110 IF 8.6 PPG CORROSION -INHIBITED BRINE ON IA SIDE FROM PACKER TO GLM #7 AT 4955' MD 92 BBLS CLEAN 110 IF 8.6 PPG BRINE ON IA SIDE FROM GLM #7 AT 4955' MD TO SURFACE. Printed 9/9/2013 9 54 49AM North America - ALASKA - BP Operation Summary Report Common Well Name: Z-68 AFE No Event Type: COM- ONSHORE (CON) Start Date: 8/21/2013 End Date: 8/26/2013 X3-013H1-C:DRILL (3,080,009.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: 8/26/2013 Rig Contractor: PARKER DRILLING CO. UWL 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Page 6 of 8 Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) �- (usft) — - -- 16:00 18:30 2.50 11 RUNCOM P RUNCMP DROP 1-7/8" STANDARD BALL & ROD WITH 1-3/8" FISHING NECK TO RHC -M PLUG IN'X' NIPPLE AT 9515' MD PRESSURE TEST 18:30 - 19:00 0.50 19:00 - 19:30 0.50 19.30 - 00:00 4.50 8/25/2013 00:00 - 05:00 5.00 05:00 - 06:00 1.00 06:00 - 07.00 07:00 - 12:00 TUBING TO 250 PSI LOW FOR FIVE MIN (PASS). CONTINUE TO PRESSURE UP TO SET PACKER AND TEST TUBING TO 3500 PSI HIGH FOR 30 MIN (PASSING TEST). BLEED TUBING TO 2000 PSI AND HOLD. PRESSURE TEST IA TO 250 PSI LOW FOR FIVE MIN AND 13500 PSI HIGH FOR 30 MIN (PASSING TEST). BLEED IA TO 0 PSI. BLEED TUBING TO 0 PSI. I - SEE ATTACHED TEST DOCUMENTATION. RECEIVE APPROVAL TO PROCEED WITH OPERATIONS FROM WELLS TEAM LEADER. - VOLUME TO PRESSURE UP = VOLUME BLED BACK (SATISFIES 1 HOUR MONITORING - PERIOD PRIOR TO SETTING TWC). _ RUNCOM P RUNCMP SHEAR DCK-2 VALVE IN GLM #7 AT 4955' MD AS FOLLOWS: PRESSURE UP ON TUBING TO 2000 PSI. PRESSURE UP ON IA TO 3500 PSI. BLEED TUBING PRESSURE QUICKLY TO ZERO AND OBSERVE PRESSURE DROP ON IA TO INDICATE VALVE SHEAR. - CIRCULATE 5 BBLS BOTH WAYS TO CONFIRM CIRCULATION; 3 BPM, 1500 PSI �— DOWN TUBING, 1100 PSI DOWN IA. WHSUR P RUNCMP FMC REPRESENTATIVE ON LOCATION TO INSTALL CIW 4" TYPE H TWC WITH DRY ROD. WHSUR N SFAL 10,233.00 `RUNCMP UNABLE TO PRESSURE TEST TWC FROM ABOVE. RIG UP DUTCH RISER TO PULL TWC AND CALL OUT VALVE SHOP LUBRICATOR I CREW. WHSUR N SFAL 10,233.00 RUNCMP TROUBLESHOOT INABILITY TO PRESSURE TEST TWC FROM ABOVE. RIG UP LUBRICATOR AND PRESSURE TEST WITH TEST PUMP IN PREPARATION FOR PULLING TWC. NARROW DOWN LEAK TO SURFACE _ MUD LINES. WHSUR P RUNCMP PRESSURE TEST TWC FROM BELOW WITH SECONDARY KILL LINE TO 250 PSI LOW FOR FIVE MIN AND 3500 PSI HIGH FOR 30 MIN (PASS). PRESSURE TEST TWC FROM ABOVE WITH TEST PUMP TO 250 PSI LOW AND 3500 PSI HIGH FOR FIVE MIN EACH (PASS) SEE ATTACHED DOCUMENTATION 1.00 WHSUR N SFAL 10,233.00 RUNCMP RIG DOWN LUBRICATOR AND DUTCH RISER. 5.00 BO SUP R P POST NIPPLE DOWN 13-5/8" SHAFFER 5K BOP STACK, BELL NIPPLE AND HIGH PRESSURE RISERS. CLEAN PITS THROUGHLY IN PREPARATION FOR SUMMER MAINTENANCE. BARRIERS TO NIPPLE DOWN: TUBING: TWC TESTED FROM BELOW, KWF ON TOP OF BALL AND ROD IN RHC -M PROFILE INNER ANNULUS: TESTED PRODUCTION PACKER, KWF AND CASING ANNULUS VALVES Printed 9/9/2013 9:54:49AM North America - ALASKA - BP Operation Summary Report Page 7 of 8 Common Well Name: Z-68 AFE No Event Type: COM- ONSHORE (CON) Start Date: 8/21/2013 End Date: 8/26/2013 X3 -013H1 -C: DRILL (3,080,009.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: 8/26/2013 Rig Contractor: PARKER DRILLING CO. UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations - - (hr) (usft) 12:00 - 15:00 3.00 WHSUR P POST NIPPLE UP FMC 4-1/16" STUDDED TOP X 11" STUDDED BOTTOM 5K TUBING HEAD ADAPTER FLANGE. PRESSURE TEST TO 250 PSI LOW FOR FIVE MIN AND 3500 PSI HIGH FOR 10 MIN (PASSING TESTS, SEE ATTACHED CHART). -- -- 15:00 17:30 2.50 WHSUR P POST NIPPLE UP 4-1/16" DRYHOLE TREE (DOUBLE MASTER VALVES). FILL WITH DIESEL AND PRESSURE TEST TO 250 PSI LOW AND 3500 PSI HIGH FOR FIVE MIN EACH (PASSING TESTS, SEE ATTACHED CHART) 17:30 - 19:30 2.00 WHSUR P POST RIG UP LUBRICATOR AND PRESSURE TEST TO 250 PSI LOW AND 3500 PSI HIGH FOR FIVE MIN EACH TO LEAKTIGHT CRITERIA (PASS, SEE ATTACHED CHART). PULL TWC. RIG DOWN LUBRICATOR. 19:30 21:00 1.50 WHSUR P POST RIG UP AND REVERSE IN 40 BBLS 70 OF DIESEL FREEZE PROTECT. LOAD ADDITIONAL DIESEL INTO FREEZE PROTECT TANK. 21:00 00:00 3.00 RIGD P T POST LAYDOWN 4" DRILLPIPE FROM DERRICK WITH OFFLINE STANDBUILDING EQUIPMENT. CONTINUE TO CLEAN MUD PITS. 8/26/2013 00:00 - 01:30 1.50 RIGD P POST LAYDOWN 4" DRILLPIPE FROM DERRICK WITH OFFLINE STAND BUILDING EQUIPMENT _ 01:30 03:30 2.00 WHSUR P POST REVERSE IN FINAL 31 BBLS 70 OF DIESELAT 2.4 BPM, 750 PSI ICP, 1300 PSI FCP TO FREEZE PROTECT TUBING AND IA TO 2100' MD, 2057' TVD. OPEN UP IA TO TUBING AND U -TUBE DIESEL FOR ONE HOUR. PRESSURE CHECKAND FLOWCHECK WELL TO CONFIRM U -TUBE COMPLETE (STATIC). TOTAL DIESEL PUMPED FOR TUBING AND IA FREEZE PROTECT = 71 BBLS. WELL CALCULATED TO BE 14 PSI UNDERBALANCE TO 8.2 PPG EMW MOST LIKELY PORE PRESSURE AT TOP OF LINER AT 9525' MD, 8611' TVD. SIMOPS: BLOWDOWN ALL LINES AND PREPARE TO SEPARATE MUD MODULE 03:30 05:00 1.50 WHSUR P POST RIG UP VALVE SHOP LUBRICATOR. PRESSURE TEST TO 250 PSI LOW AND 3500 PSI HIGH TO LEAK TIGHT CRITERIA (PASSING TESTS, SEE ATTACHED CHART). SET CIW TYPE'H' 4" BPV. 0500 0730 2.50 WHSUR N SFAL 10,233.00 POST UNSUCCESSFULLY ATTEMPT TO TEST BPV FROM BELOW DUE TO SURFACE PUMP ISSUES. CALLOUT LITTLE RED SERVICES. 07:30 08:30 1.00 WHSUR N SFAL 10,233.00 POST IADC CODE 8 NPT: UNABLE TO RESET POPOFF ON FREEZE PROTECT PUMP AND REPAIR LEAK ON IRON DERRICKMAN 08:30 09:30 1.00 RIGD P POST LAYDOWN 4" DRILLPIPE FROM DERRICK WITH OFFLINE STAND BUILDING EQUIPMENT. - MIRU LITTLE RED SERVICES PUMP TRUCK 09:30 11:00 1.50 WHSUR P POST PRESSURE TEST BPV FROM BELOW TO 250 PSI FOR FIVE MIN AND 3500 PSI HIGH FOR 30 MIN WITH LITTLE RED (PASSING TESTS, SEE ATTACHED CHART). RDMO VALVE SHOP LUBRICATOR CREW. SIMOPS: LAYDOWN 4" DRILLPIPE WITH OFFLINE STANDBUILDING EQUIPMENT Printed 9/9/2013 9 54:49AM North America - ALASKA - BP Operation Summary Report Page 8 of 8 Common Well Name: Z-68 AFE No Event Type: COM- ONSHORE (CON) Start Date: 8/21/2013 End Date: 8/26/2013 X3 -013H1 -C: DRILL (3,080,009.00 ) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: 8/26/2013 Rig Contractor: PARKER DRILLING CO. UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 11:00 15:00 4.00 RIGD P POST LAYDOWN REMAINING 4" DRILLPIPE WITH OFFLINE STANDBUILDING EQUIPMENT. REMOVE WORKING ANNULUS VALVES. SECURE TREE WITH PROPER ANNULUS OUTLET EQUIPMENT AND CLEAN CELLAR. RELEASE PARKER 273 RIG AND END CON EVENT AT 15:00 ON 8/26/2013. NEXT PROJECT SUMMER MAINTENANCE ON Z PAD WELLWORK TRANSFER PERMIT CLOSED OUT WITH PAD OPERATOR WELL HANDOVER COMPLETE WITH WELLS GROUP ALL TREE AND WELLHEAD VALVES CLOSED TO GAUGES FINAL T/I/O PRESSURE = 0/0/220 PSI CEMENT IN 20" X 9-5/8" ANNULUS IS AT CONDUCTOR OUTLETS. PERFORMANCE SUMMARY: 32.63 TOTAL DAYS VERSUS 35.40 AFE DAYS, 32.80 TARGET DAYS 29.65 DAYS/10K VERSUS 27.60 D/1 OK AFE, 25.61 D/1 OK TARGET $11.34MM TOTAL COST VERSUS $11.90MM AFE, $11.07MM TARGET 200 HRS / $2.70MM TOTAL NON-PRODUCTIVE TIME (26%) Printed 9/9/2013 9:54:49AM by Z-68PB1 Survey Geodetic Report ftmimbuger (Def Survey) A: SP Vertical Section Azimuth: 115.000' (True North) TVDSS Prudhoe Bay Unit - WOA Vertical Section Origin: 0.000 ft, 0.000 ft xture l Slot: Z -PAD / Slot (SP) TVD Reference Datum: Rotary Table Northing Z-68 TVD Reference Elevation: 102.820 ft above MSL hole: Z -68P81 Ground Elevation: 55.900 ft above MSL ft 500292349370 Magnetic Declination: 20.085' ey Name: Z-68Pg1 Total Gravity Field Strength: 1001.9930mgn (9.80665 Based) ey Date: August 1S, 2013 Total Magnetic Field Strength: 57607,747 PT I AHD DOI I ERD Ratio: 230.326' / 4563.562 ft f 6.08910.506 Magnetic Dip Angle: 80,976' curate Reference System: NAD27 Alaska State Plane, Zone 04, US Feet Declination Date: July 28, 2013 Rion Let 1 Long: N 70' 17'6159216', W 149' 11' 19.68329" Magnetic Declination Medet BGGM 2012 41on Grid WE YIX: N 5959100.230 WS, E 600170.920 ftUS North Reference: True North Grid Convergence Angle: 0.7637' Grid Convergence Used: 0.0000' Scat. Factor; 0.9999114 Total Corr Mag North ->True North: 20.0854 ' Drilling Office 2.6.1166.0 Prudhoe Bay Unit - W OA\Z-PAD\Z-68\Z-68PB1\Z-68PS1 8/2612013 10:29 AM Page 1 of 3 MD Incl Azim True TVDSS TVD VSEC AND Closure NS EW OLS Northing Easting Letltude Longltude Comments k ft h k ft h k °1100ft RU5 kU3 SITE A 0.00 -102 .82 Q.00 . 0 0.00 0.00 0.00 NIA 5959100,23 600170.92 70.29766449 -149.18880091 WRP 4892 0100 0.00 55.90 4892 0.00 0.00 0.00 0,00 0.00 0,00 5959100.23 600170.92 70.29766449 -149.18380091 100.00 0.15 279.71 -2,82 100.00 -0.07 0.07 0.07 0.01 -0.07 0.20 595910024 600170.85 70.29766452 -149.18880147 190.00 0.23 323.42 87.18 190.00 -0.34 0.35 0.34 0.18 -0-29 0.18 5959100.40 600170.63 70.29766497 -149.18880328 281.00 0.26 13.28 178.18 281.00 -0.55 0.73 0.64 0.54 -0.35 024 5959100.76 600170.56 70.29766596 -149.18880375 374,00 1.01 13.50 271.17 373.99 -0.75 1.78 1.56 1.56 -0,11 0.76 5959101.79 600170.79 70.29766874 -149.18880178 464.00 2.58 11.69 361,13 463.95 -1,37 4.60 4.34 4.31 OSO 1,75 5959104.55 600171.36 70.29767626 -149.18879690 495.11 2.59 14.95 392.20 495.02 -1.65 6.00 5.74 5.68 0.82 0,44 5959105,92 600171.67 70.29767999 -149.18679426 587.22 3.17 22.22 48420 567.02 -2,14 10,62 10.31 10.04 2.32 0,74 5959110.30 600173.11 70.29789193 -149.18878211 682.60 3.79 34.12 579.40 682.22 -1.77 16.39 15.93 15.10 5.09 0.99 5959115.39 600175.81 70.29770572 -149.18875972 774,80 331 43.93 671.43 774.25 -0.42 22.09 21.36 19.54 8.64 0.84 5959119.88 600179.30 70,29771785 -149.16673093 862.12 3.16 55.89 758.61 861.43 1.63 27.00 25.86 22.70 12.38 0.79 5959123.09 600183.00 70.29772650 -149,18870063 957,35 3.01 82.45 853.70 956.52 5.09 32.03 29.84 24.50 17.04 ISO 5959124.95 600187.63 70.29773142 -149.18866296 1053.00 3.95 113.93 949.19 1052.01 10.50 37.70 32.56 23.49 22.54 2.19 5959124.02 600193.14 7029772867 -149.18861842 1146.24 5.14 123.78 1042.13 1144.95 17.75 45.04 34.70 19.52 28.68 1.84 5959120.13 600199.34 7029771781 -149.18856866 1242.64 8.22 152.69 1137,88 1240.70 27.38 56.11 36.74 10.63 35.17 4.17 5959111.33 600205.94 70.29769352 -149,18051616 1335.38 11.12 168.09 1229.31 1332.13 38.00 71.60 40.26 4.02 40,06 4.16 5959096.75 600211.02 7029765351 -149.10847657 1430.22 14.16 176.77 1321.85 1424.67 48.98 92.31 49.17 -24.56 42.60 3.77 5959076,25 600213.84 70.29759740 -149.18845599 152547 17.05 183.11 1413.59 1516.41 59.70 117.91 65.73 -50.14 42.50 3,52 5959050.67 600214.06 70.29752751 -149.10845681 1619.52 18.46 163.29 1503,15 1605.97 70.35 146.59 88.76 -78.77 40.89 1.50 5959022.02 600212.86 70.29744928 -149,18846979 1714.25 19.68 186.56 1592.69 1695,51 80.95 177.53 116.06 -109.59 30,21 1.71 5958991.16 600210.58 70.29736500 -149.18849152 1811.06 19.00 186.76 1684.03 1786.85 91.04 209.59 145.58 -141.44 34.49 0.71 5958959.28 600207.29 70.29727809 -149.18852162 1904,40 20.75 182,93 1771.01 1874.63 102.01 241.31 175-95 -173.04 31.86 2.34 5958927.64 600205.08 70.29719174 -149.18854295 2000.75 21.51 178.03 1861,69 1964.51 116.43 276.03 210.14 -207.75 31.59 2.00 5958892,94 600205.28 70.29709694 -149.10854510 2095.28 21,64 174.15 1949.60 2052.42 133.23 310.77 244.78 -242.41 3197 1.52 5958858-32 600208.11 70.29700225 -149.18852589 2189.22 21.78 172.30 2036.88 2139.70 151.51 345.52 279.51 -276.91 38.04 0.71 595882187 600212.65 70,29690798 -149.18849208 2285.25 22.15 170.94 2125.94 2220.76 171.25 381.44 31543 -312.45 43.26 0.68 5958788.41 600218.33 70.29681090 -149.18845068 2380.78 23.04 173.73 2214.14 2316.86 191.04 418.14 352.12 -348.82 48,13 1.46 5958752.12 600223.69 70.29671154 -149,18841118 2474.48 21.92 175.56 2300.72 2403.54 209,16 453.96 387.92 -304.48 51.49 1.41 $958716.50 600227.53 70.29661411 -149.18638401 2568.72 21.65 178.08 2388.26 2491.08 225.84 488.85 422.71 -419,32 53.43 1.07 5958681.70 600229.93 70.29651894 -149.18836829 2604.70 19.88 179.99 2478.04 2580.86 240.51 522.70 456.45 453.24 54.03 1.90 5958647.79 600230.98 70.29642626 -149.18836346 2767.59 19,32 179.93 2565.55 2668.37 253.69 $53.93 467.39 -464.39 54.05 0.58 5958616.65 600231.41 70.29634117 -149.18836331 2853.69 19.12 179.09 2656.30 2759.12 261.31 585.56 518.87 -516.02 54.32 0.36 5958585.03 600232.10 7029625475 -149.18836113 2949.00 18.68 178.52 2746.47 2849.29 280-93 616.44 549.64 -546.89 54.96 0.50 5958554.17 600233.16 70.29617043 -149.16835594 3042.50 17.71 178,35 2835.29 2938.11 293.99 645.63 578.76 -578.07 55.76 1,04 5958525.01 600234.34 70.29609070 -149.18834949 3137,13 19.70 176.11 2924.92 3027.74 308.15 675.97 609.07 -606.37 57,25 2.24 5958494.73 600236.24 70.29600791 -149.18833737 3220.76 19.32 175.44 3003.75 3106.57 321.79 703.90 637.00 -034.23 59.31 0.53 5958466.91 600238,67 70,29593182 -149.18832073 3262.71 19.10 175.00 3043.36 3146.18 328.64 717.71 650.60 -647.98 60.46 0.63 5958453.17 600240.00 70.29589424 -149.18831142 9-515' Cag 3287.00 19.17 f 75.82 3066.31 3169.13 332,59 725.87 866.76 -855.92 61.11 0.68 5958445.24 600240.76 70.29587257 -149.18830615 3387,72 19.37 177.40 3133.07 3235.89 343.72 749.00 682.06 -679.21 62.53 0.88 5958421.98 600242.49 70.29580894 -149.18829467 3452.84 19.55 166.34 3222.79 3325.61 36017 780.60 713.59 -710.44 67.00 3.87 5958390.81 600247.38 70.29572361 -149.18825843 3547.54 18.93 157.67 3312.22 3415.04 382.17 811,76 744.01 -740.05 76.58 3.08 5958361.33 600257.35 70.29564271 -149.18818087 3643.44 18.31 146.64 3403.12 3505,94 406.41 842.29 772.41 -767.06 90.74 3,66 5958334.51 600271.86 70.29556893 -149.10806628 Drilling Office 2.6.1166.0 Prudhoe Bay Unit - W OA\Z-PAD\Z-68\Z-68PB1\Z-68PS1 8/2612013 10:29 AM Page 1 of 3 MD Incl A7im True TVDSS TVD VSEC AHD Closure NS EW OLS Northing Eeating Latitude Longitude Comments (h) (°) V), (fil 00 (ft) (it) (ft) (ft) (ft) V11001t) thus) (ftus) 3738.20 17.06 135.81 3493.43 3596.25 432.06 871.00 796.93 -789.50 108.57 3.77 5958312.32 600290.00 70.29550764 -149.18792187 3833.64 18.70 127.76 3584.27 3687.09 460.07 900.26 819.36 -808.91 130.43 3.10 5958293.20 600312.11 7029545461 -149.18774490 3927.94 2093 121.39 3672.99 3775.81 491.56 93219 841,67 -826.94 156.77 329 5958275.52 600338.68 70.29540534 -149.18753168 4023,16 22.36 114.64 3761.51 3864.33 526.58 967.28 864.00 -843.36 187.76 3.01 5958259.53 600369.88 70.29536049 -149.18728080 4117,35 24.95 109,92 3847.79 3950.61 564.30 1005.05 886.05 -857.60 222.73 3.40 595824575 600405.04 70.29532158 -149.18699767 4211.91 27.34 105.10 3932.67 4035.49 605.56 1046.69 908.78 -870,05 262.45 3.38 5958233.83 600444.92 70.29528755 -149.18667605 4307.05 29.47 9954 4016.37 411919 649.65 1091.92 931,54 -879-63 306.64 3.57 5958224.85 600489.23 70.29526140 -149.18631832 4402.18 30.47 92.44 4098.81 4201.63 694.50 1139.40 952.68 -884.53 353.83 3.87 5958220.57 600536.47 70.29524799 -149.18593626 4496.56 30.72 86.51 4180.07 4282.89 737.79 1187.40 971.11 -884.08 401.81 3.21 5958221.66 600584.44 70.29524921 -149.18554779 4591,41 31.39 83.72 4261.32 4364.14 780.20 1236.32 9?i.55 -879.91 450.55 1.67 5958226.49 600633.11 70,29526061 -149.18515320 4635.71 2925 81.97 4342.72 4445.54 820.51 1283.92 1005.81 -874,00 497.78 2A5 5958233.02 600680.26 70.29527674 -149.18477081 4781.93 28.28 81.85 4427.07 4529.89 859.30 1330.23 1023.75 -867.49 543.62 1.01 5958240.15 600726.00 70.29529453 -149.18439967 4875.99 28.88 86.29 4509.68 4612.50 897.88 1375.21 1044.35 -862.86 588.35 2.35 5958245.37 600770.66 70.29530716 -149.18403753 4971.48 2948 86.54 4593.05 4695.87 938.77 1421.76 1068.88 -859.95 634.81 0,64 5958248.90 600817,08 70.29531510 -149.18366133 5067.10 28.21 86.07 4676.80 4779.62 979.23 1467.89 1094.52 -856.98 680.85 1.35 5958252.48 600863.07 70.29532320 -149.18328663 5161.22 2844 8541 4760.42 4863.24 1016,93 1511.10 1119.38 -853.78 723.93 1.91 5958256.26 600906.10 70.29533194 -149,18293982 5256.49 26.58 88-54 4845.67 4948,49 1054.45 1553.61 1145.62 -851.54 766.38 1.47 5958259.06 600948.52 70.29533805 -149.16259612 5349.14 26.34 87.40 4923.62 5031.44 1091.23 1594.89 1172-56 -850.07 807.64 0.61 5958261.07 600989.74 70.29534203 -149 18226211 544547 28.71 85.95 5014.04 5116.86 1130.40 1639.40 1201.76 -847.47 852.07 2.56 5958264.27 601034.14 70.29534913 -149.18190236 5540.43 28.79 85.88 5097.29 5200.11 1170.31 1685.08 1232.25 -844.22 897.63 0.09 5958268.13 601079.64 70.29535600 -149,18153350 5635.87 28.75 85.43 5180.95 5283.77 1210.35 1731.01 1263.69 -840.74 943.43 0.23 5958272.22 601125.39 70.29536749 -149.18116267 5731.20 28.73 83.79 526454 5367.36 1249.89 1776.85 1295.33 -836.43 989.07 0.83 5958277.13 601170.96 7029537924 -149.18079322 5825.71 28.32 82.42 5347.58 5450.40 1288.21 1821.98 1326.45 -831.02 1033.87 0.82 5958283.14 601215.68 70.29539401 -149.18043048 5920.51 27,99 85.10 5431.17 5533.99 1326.44 1866.71 1358.42 -826.15 1076.33 1.38 5958288.60 601260.06 70.29540729 -149.18007055 6015.12 27.19 83.35 5515.02 5617.84 1364.09 1910.52 1390.67 -821.75 1121.92 120 5958293.58 601303.59 70.29541929 -149.17971761 6108.64 29.01 83.84 5597.51 5700.33 1401.69 1954.57 1423.40 -816.84 1165.69 1.96 5958299.07 601347.29 70,29543269 -149.17936321 6203.60 28.71 83.00 5680.68 5783.50 144033 2000,40 1457,99 -811.59 1211.22 0.53 5958304.93 601392.74 70.29544701 -149.17899457 6298.46 28.94 86.85 5763.79 5866.61 1480.30 2046.12 1493.85 -80755 1256.76 1.97 5958309.57 601438.21 70.29545802 -149.17862591 6393.14 28.07 86.42 5846.99 5949.81 1520.06 2091.31 1530.59 -804.90 1301.86 0.94 5958312.82 601483.28 70.29546524 -149.17826071 6486.02 27.34 85.79 5930.99 6033.81 1558,68 2135.42 1566.66 -801.91 1345.87 0.83 5958316.40 601527.24 7029547340 -149.17790440 6582.85 28.53 87.63 6014.77 6117.59 1597.80 2179.84 1603.66 -799.38 139022 1.55 5958319.53 601571.54 70.29548030 -149.17754535 6677.30 26.97 87.07 6098.36 6201.18 1636.75 222382 1640.90 -797.35 1434.15 1.67 5958322.14 601615.44 70,29546582 -149.17716969 6773.28 29.03 89.17 6183.10 6265.92 1676.95 2268-87 1679.71 -795.90 147917 2.38 5958324.19 601660.44 70.29548975 -149.17682513 6868-66 28.52 68.45 6266.70 6369.52 1718.15 2314.78 1719.83 -794.95 152508 0.65 5958325.75 601706.32 70.29549233 -149.17645350 6963.56 29.12 88.16 6349.85 6452.67 1759.02 2360.53 1759.89 -793.59 1570.80 0.65 5958327.71 601752.02 70.29549600 -149.17608328 7058.57 28.12 87.32 6433.25 6536.07 1799.48 2406.04 1799,81 -791.60 1616.28 1,13 5958330.11 601797.46 70.29550086 -149.17571511 7153.33 27.88 82.45 6516.93 6619.75 1837.93 2450.50 1837.97 -787.85 1660.55 2,43 5958334.65 601841.68 70.29551164 -149.17535663 7247.48 28.97 84.48 6599.73 6702.55 1876.13 2495.32 1876.16 -782.76 1705.07 1.55 5958340.33 601886.12 70.29552551 -149.17499618 7343.60 29.17 84.86 6683.74 6786.56 1916.44 2542.02 1916.76 -778.42 1751.57 0.28 5958345.29 601932.55 70.29553733 -149.17461969 7437.68 29.45 85.89 6765.78 6868.60 1956.48 2588.07 1957.32 -774.71 1797,48 0.61 5958349.61 601978.40 70.29554744 -149.17424803 7533.20 30.32 85.80 6848.60 695142 1996.04 2635.67 1999.67 -771.26 1844.95 0.91 5958353.69 602025.81 70.29555683 -149.17386371 7626.91 29.58 85.61 6929.79 7032.61 2038.84 2682.45 2041.47 -767.76 1891.60 0.80 5958357.82 602072.41 70.29556637 -149.17348599 7721.95 31.11 87.38 7011.81 7114,63 2081.04 2730.46 2084.88 -764.84 1939.52 1.86 5958361.37 602120.26 70.29557431 -149-17309801 7817-60 31.27 87.03 7093.63 7196.45 2124.86 2779.99 2130.12 -762.43 1988.99 0.25 5958364.45 602169.72 70.29558088 -149.17269743 7912.30 30.77 86.68 7174.79 7277.61 2167.89 2828.80 2174.75 -759.75 2037.72 0.56 5958367.77 602218.40 70.29558815 -149.17230291 8006.80 33.51 87.98 7254.80 7357.62 2212.42 2879.06 2221.08 -757.43 2087.94 2.99 5958370.76 602268.58 7029559445 -149.17189637 8100.15 3,?39 92.65 7332.48 7435.30 2259.45 2930.64 2269.90 -757-73 2139.69 2.80 595837116 602320.33 7029559361 -149.17147731 8195-68 34.46 94.56 7411.51 7514,33 2309.41 2984.50 2321.55 -761.11 219324 1.27 5958368.49 602373.91 7029558433 -149.17104377 8290.80 33.82 93.83 7490,24 7593.06 2359.31 3037.88 2373.17 -765.01 2246.48 0.80 5958365.29 602427.19 70.29557361 -149.17061275 838514 33.21 93.59 7568.90 7671.72 2407.85 3089,97 2423.50 -768.38 2298.46 0.66 5958362.62 602479.21 70.29556436 -149.17019190 9480.00 35-36 93.23 7647.27 7750.09 2457.53 3143.40 2475.13 -771.56 2351-80 2.28 5958360.15 602532.58 70.29555564 -149.16976007 B574.50 35.31 92.72 7724.36 7827.18 2508.20 3198.05 2527,92 -774.40 2406.38 0.32 5959358.05 602587.19 70.29554784 -149.16931818 8669.37 35.09 92.04 7801,88 7904.70 2558.67 3252.74 2560.66 -776,67 2461.02 0.47 595835650 602641.85 70.29554159 -149.16887582 8764.18 34.82 90.57 7879.59 7982.41 2608.41 3307.06 2632.87 -777.91 2515-32 0.93 5958355.99 602696.16 70.29553816 -149.16843618 8859.41 34.41 89.52 7957.97 8060.79 2657.46 3361.15 2684.61 -777.95 2569.42 0.76 5958356.66 602750.24 70.29553798 -149.16799822 8954.22 33.93 88.80 8036.41 8139.23 2705.38 3414.40 2735.39 -777.17 2622.66 0.66 5958358.15 602803.47 70.29554006 -149.16756714 9049.09 33.85 91.56 8115.17 8217.99 2753.39 3467.30 2786.18 -777.34 2675.55 1.62 5958358.69 602856.35 70.29553956 -149.16713896 9143.77 32.45 90.35 8194.44 8297.26 2800.67 3519.07 2836.16 -77821 2727.31 1.64 5958358.51 602908,11 70.29553712 -149.16671987 9238.91 33.61 90.86 8274.20 83770.2 2847.90 3570.92 2886.21 -778.76 2779.16 1.25 5958358.65 60295996 70.29553556 -14916630004 9334.01 34.30 92.12 8353.08 8455.90 2896-60 3624.04 2937.74 -780-15 2832.26 1.04 5958357.97 603013.07 70.29553172 -149.16587017 9429-01 36.14 90.67 8430.69 8533,51 2946.80 3678.62 2990.92 -781.47 2887,03 2.13 5958357.38 603067,84 70.29552807 -149.16542676 9523.72 35.60 90.61 8507.44 8610,26 299735 3734.32 3044.68 -782.09 2942.52 0.57 5956357.50 603123.33 70.29552631 -149-16497749 9555.18 35.23 90.36 8533.08 8635.90 3013.94 3752,55 3062.34 -782.24 2960.75 1.26 5958357.59 603141.56 70.29552587 -149.16482990 9635.53 3445 90.05 8599.02 8701.84 3055.61 3798.45 3106.78 -782.41 3006.65 1.00 5958358.04 603187.46 70.29552537 -149.16445826 7- 9702.00 34.52 91-39 8653.81 6756,63 3089.91 3836.09 3143.33 -782.87 3044.28 1.13 5956358,07 603225.09 70.29552405 -149.16415359 Drilling Office 2.6.1166.0 Prudhoe Bay Unit - WOA1Z-PAD1Z-6812-68PB11Z-68PB1 8/26/2013 10:29 AM Page 2 of 3 Commarda MD Incl Axim True TVDSS TVD VSEC AHD Closure NS EW OLS Northing Easting Lathude Longitude (h) (•1 (9 (ht (h) I(ft) (ft) (f) Ih) (°NODfi) (trust Must (•) (•1 9714.28 34.64 91.62 8663.93 8766.75 309630 3843.05 3150.12 -783.06 3051.24 1.13 5958357,98 603232.05 70.29552354 -149,16409725 9746.59 36.87 92.28 6690.16 8792.98 3113.64 3861.90 3168.53 -783.70 3070.D8 7.31 5958357.59 603250.89 70.29552176 -149.16394473 9778,16 37.76 98.57 8715.28 8818.10 3131.66 3881.03 3187.42 -78552 3089-11 12.39 5958356.02 603269.95 70.29551677 -149.16379062 9809.78 3104 102.72 8740.06 8842.86 3150.68 3900.66 3207,02 -769.16 3108.41 9.10 5958352.64 603289.29 70.29550682 -149.16363445 9842.18 41.71 109.20 8764.76 8867.58 3171.39 3921.64 3227.97 -794.95 3128.55 15.35 5958347.12 603309.50 70.29549096 -149.16347137 9873.33 45.45 109.66 8787.32 6890.14 3192.76 3943.11 3249.35 .302.10 3148.80 12,05 5958340.24 603329.84 70.29547142 -149.16330747 9904.20 49.34 110.19 8808.17 8910.99 3215.42 3965.86 3271.99 -009.85 3170.19 13.31 5958332.77 603351.33 70.29545020 -149.16313432 9933.29 51.72 110.85 8826.62 8929.44 3237.84 398835 3294.35 -817.74 3191.25 7.70 5958325.17 603372.49 70.29542864 -149.16296385 996577 54.84 111.85 8846.04 8948.86 3263.82 4014.38 3320.18 -827.22 3215.49 9.92 5958316.01 603396.86 7029540271 -149.16276761 9998.81 57.55 111.02 8864.42 8967.24 3291.22 4041.83 3347.44 -837.25 3241.04 8.46 5958306.33 603422.54 70.29537526 -149.16256075 10031.86 60.33 112.60 8881.37 8984.19 3319.31 4069.97 3375.35 -847.71 3267.16 9.41 5958296.22 603448.79 70.29534668 -149.16234932 10064.29 63.29 112.18 8896.78 8999.60 3348.04 4098.72 3403.84 -858.66 3293.75 9.14 5958285.62 603475.52 70.29531673 -149.16213409 10094.88 68.92 113.24 8909.17 9011.99 3375.97 4128.68 3431.51 -869.46 3319.54 18.68 5958275.17 603501.45 70.29528719 -149.16192535 10126.53 7591 113.93 8918.72 9021.54 3406.11 4156.83 3461.31 -881.52 3347.17 22.18 5958263.47 603529.24 70.29525419 -149.16170168 10158-74 82.86 115.60 8924.65 9027.47 3437.75 4188,47 3492.47 -994.78 3375.90 22.17 5958250.60 603558.14 70.29521794 -149.16146916 10109.63 87.86 118.32 8927.15 9029.97 3468.51 4219.25 3522.56 -908.74 3403.33 18.41 5958237.01 603585.75 70.29517978 -149.16124713 10221.62 92.28 120.51 8927.11 9029,93 $500.40 4251.23 3553.54 -924,44 3431,18 15.42 5958221.68 603613.81 70.29513684 -149.18102165 10252.53 85.19 122.27 8925.10 9027,92 3531.04 4282,07 3583.15 -940.51 3457.51 11.00 5958205.97 603640.35 70.29509242 -149.16080857 10283.65 97.10 123.11 8921.77 9024.59 3561.71 4313.01 3612.67 -957.22 3483.55 6.70 5958189.61 603666.60 70.29504724 449.16059781 10316.26 98.53 123.54 8917.33 9020.15 3593.67 4345.32 364342 -914.96 3510.54 4.58 5958172.23 603693.83 70.29499872 -149.16037933 10347.18 99.02 122.39 8912.62 9015.44 3623.93 4375.88 3672.68 -991.59 3536.18 4.00 5958155.95 603719.68 70.29495326 -149.16017183 10379.20 99.43 122.12 8907.46 9010.30 3655.29 4407.48 3702.88 -1008.46 3562.91 1.53 5958139.44 603746.63 70,29490715 -149.15995550 10411.71 99.80 123.14 8902.03 9004.85 3687.05 4439.53 3733.57 -1025.74 3589.90 3.39 5958122.52 603773.85 70.29485990 -149.15973705 10442.51 101.02 122.22 889645 8999.27 3717.07 4469.82 3762.58 -1042.09 3615.39 4,73 5958106.51 603799,55 70.29481519 -149.15953072 10538,00 101.02 12222 8878.19 8901.01 3810.05 4563.55 3852.71 -1092.07 3694.69 0.00 5958057.60 603879.50 70.29467856 -149.15888894 Survey Error Model: ISCWSA Rev 0 -" 3-0 95.000% Confidence 2.7955 sigma Survey Program: Description MD From MD To EOU Freq Hole Son Casing Diameter curve T Tool Type Borshols 1 survey (M (1.l) (R) (in) (In) Y 0.000 464.000 Act Stns 12.250 9.625 uYD.GZ-6uS Z-681,81 ! -60pal 495.110 3220.760 Act Stns 12.250 9.626 MWD+IFR+MS Z -68P011 Z-681`81 3262.710 3262.710 Act Stns 8.750 7.000 INC -TREND Z-68PB1 I Z-661`81 3357.720 9635.530 Act Stns 8.750 7.000 MWD -IFR -MS Z-681,131 I Z-OWB1 9714.280 9714.280 Act Stns 8.750 7.000 INC+TREND Z-G8PB1 I Z-68PB1 9746.580 9998.810 Act Stns 6.125 4.500 MWD+IFR+IAS Z-68PB1/Z-68PB1 10031.660 10442.510 Act Stns 6.125 4.500 MWD -IFR -MS Z-68PB1 iZ-68PB1 10442.510 10538.000 Act Sins 6.125 4.500 BLIND Z-68PBI IZ-68PB1 Legal Description: NarthingtY) Eesting (X) Surface: 4290.4 FSL 2506.7 FEL S19 T11N R12E UM 5959100.23 ;9;49 BHL'. 3197 FSL 4096 FEL 20 T11N R12EUM 5958057,600 603879.500 Final Definitive Survey Verified and Signed -off All targets andlor well position objectives have been achieved. i] Yes ❑ No I have checked to the best Only ability that the following data Is correct: ❑+ Surface Coordinates - O Declination & Convergence ORS Survey Co rections p Survey Tool SLB DE: Client Representative: Date: Drilling Office 2.6.1166.0 Prudhoe Bay Unit- WOA\Z-PAD7-681Z-68PB1\Z-68PB1 8/26/2013 10:29 AM Page 3 of 3 by Z-68 Survey Geodetic Report Schlumberger (Det Survey) Report Date: August 26, 2013 -10:17 AM Survey I OLS Computation: Minimum Curvature I Lubinski Client: BP Vertical Section Azimuth: 133.000' (True North) Field: Prudhoe Bay Unit - WOA Vertical Section Origin: 0.000 it, 0.000 H Structure i Slot: Z -PAD I Slot (SP) TVD Reference Datum: Rotary Table Well: Z-68 TVD Reference Elevation: 102.820 it above MSL Borehole: Z-68 Ground Elevation: 55.900 it above MSL - - APIf1: 500292349300 Magnetic Declination: 20.049' Survey Name: Z-68 Total Gravity Field Strength: 1001.9930mgn (9.60665 Based) Survey Data: August 19, 2013 Total Magnetic Field Strength: 57606.931 nT Tort I AMD 1 DDI I ERD Ratio: 226.076' 14251.314 H 16.03510.469 Magnetic Dip Angle; 60.977' Coordinate Reference System: NAD27 Alaska State Plane, Zone 04, US Feet Declination Data: August 20, 2013 Location Lat I Long: N 70' 17' 51.59215", W 149' 11' 19.68329" Magnetic Declination Model: BGGM 2012 Location Grid WE YIX: N 5959100.230 ftUS, E 600170.920 HUS North Reference: Two North CRS Grid Convergence Angle: 0.7637' Grid Convergence Used: 0.0000 ° Grid Scale Factor: 0.9999114 Total Corr Mag North.' True North: 20.0493' Drilling Office 2.6.1166.0 Prudhoe Bay Unit - W OA1Z-PAD1Z-6812-6812-68 8/26/2013 10:30 AM Page 1 of 3 MD ]not Azim True TVDSS TVD VSEC AND Closure NS EW OLS Northing Easting Latitude Longkude Commons k tt k tt tt tt k k '110Dtt MUS ttU5 RTE 0.00 0.00 0.00 -102.62 0.0 0.D0 0.00 0-00 0.00 NIA 5959100.23 600170.92 70.29766449 -149.18880091 WRP 46.92 0.00 0.00 -55.90 46.92 0.00 0.00 0.00 0.00 0.00 0.00 5959100.23 600170.92 70.29766449 .149.18880091 100.00 0.15 279.71 .2.82 100.00 -0.06 0.07 0.07 0.01 -0.07 0.28 5959100.24 600170.85 70.29766452 -149.18880147 190.00 0.23 323.42 87.18 190.00 -0.33 0.35 0.34 0.18 -0.29 0.18 5959100.40 600170.63 70.29766497 -149.18880328 201,00 0.28 13.29 178,18 281.00 -D.62 0.73 0.64 0.54 -0.35 0.24 5959100.76 600170.56 70.29766596 -149.18880375 374.00 1.01 13.50 271.17 373.99 -1,14 1.70 1.56 1.56 -0.11 0.78 5959101.79 600170.79 70.29766874 -149.18880178 464.00 2,58 11.09 361.13 463.95 -2.58 4.60 4.34 4.31 0.50 1.75 5959104.55 600171.36 70.29767626 -149.18879690 495.11 2.59 14.95 392.20 495.02 -127 6.00 5.74 5.68 0.82 0.44 5959105.92 600171.67 70.29767999 -149.18879426 587.22 3.17 22.22 484.20 587.02 5.15 10.62 10.31 10.04 2.32 0.74 5959110.30 600173.11 70.29769193 -149.18878211 682.60 3.79 3432 579.40 682,22 -6.57 16.39 15.93 15.10 5.09 0.99 5959115.39 600175.81 70.29770572 -149.18875972 774.80 3.31 43.93 671.43 774.25 -7,00 22.09 21.36 19.54 8.64 0.84 5959119.68 600179.30 70.29771785 -149.18073093 862.12 3.16 55.69 758.61 861.43 -6.42 27.00 25.86 22.70 12.38 0.79 5959123.09 600183.00 70.29772650 -149.18870063 957.35 3.01 82.45 853.70 956.52 -4.25 32.03 29.84 24.50 17.04 1.50 5959124.95 600187.63 70.29773142 -149.18866296 105300 3,95 113.93 949.19 1052.01 0.46 37.70 32.56 23.49 22.54 2.19 $959124.02 60019314 70.29772867 -149.18861642 1146,24 5.14 120.78 1042.13 1144.95 7.67 45.04 34.70 19,52 28.68 1.84 5959120.13 600199.34 70.29771781 -149.18856866 1242.64 022 152.69 1137.88 124070 16.47 56.11 36.74 10.63 WIT 4.17 5959111.33 60D205.94 70.29789352 -149.18851616 1335.38 1112 168.09 1229.31 1332.13 32.04 71.60 40.26 -4.02 40.06 4,16 $959096.75 600211.02 7029765351 -149.18647657 1430.22 14.16 176.77 1321.85 1424.61 47.90 92.31 49.17 -24.56 42.60 3.77 5959076.25 600213.84 70.29759740 -149.10845599 1525,47 17.05 183.11 1413.59 1516.41 65.27 117,91 65.73 50.14 42.50 3.52 5959050.67 600214.08 70.29752751 -149.18845681 1619.52 18.46 183.29 1503.16 1605.97 83.63 146.59 86,76 -78.77 40.89 1.50 5959022.02 600212.86 70.29744926 -149.16846979 1714.25 19.68 186.56 1692.68 1895.51 102.69 177.53 116.06 -109.59 38.21 1.71 5958991.16 600210.58 70.29736508 -149.18849152 1811.06 19.00 186.76 1684,03 1786.85 121.69 209.59 145.58 -141.44 34.49 0.71 5958959.28 600207.29 7029727809 -149.18852162 1904.40 20.75 182.93 1771.81 1874.63 141.32 241,31 175.95 -173.04 31.86 2.34 5958927.64 600205.08 70.29719174 -149.18854295 2W0.75 21.51 178.03 1861.69 1964.51 164.79 276.03 210.14 -207.75 31.59 2.00 5958892.94 600205.28 70.29709694 -149.18854510 2095.28 2164 174.15 1949.60 2052.42 190.16 310.77 244.78 -242.41 33.97 1.52 5958858-32 600208.11 70.29700225 -149.18852589 2189.22 21.78 172.38 2036.86 2139.70 216.68 345.52 279.51 -276.91 38.04 0.71 5958823.87 600212.65 70.29690798 -149.18849286 2285.25 22.15 170.94 2125.94 2228.76 244.73 381.44 315.43 -312,45 43.26 0.68 $958788.41 600218.33 70.29681090 -149.18845068 2300.78 23.04 173.73 221414 2316.96 273.10 418.14 352.12 -348.82 48.13 1.46 5958752.12 600223.69 70.29671154 -149.18841118 2474.48 21.92 175.56 2300.72 2403.54 299.87 453.96 387.92 -384.48 51.49 1 A 5058716.50 600227.53 70.29661411 -149,18838401 2568.72 21.55 178.08 2388.26 2491.08 325.05 488.85 422.71 .41 P.32 53.43 1.07 5958681.70 600229.93 7028651894 -149-18836829 2664.70 1986. 179.99 2478.04 2580.86 348.62 522.78 456.45 -453.24 54.03 1.90 5958647.79 600230.98 70.29642626 -149.18836348 2757.59 1932. 179.93 2565.55 2668.37 369.88 553.93 487.39 484.39 54.05 0.58 5958616.65 600231.41 70.29634117 -149.18836331 2853.69 19.12 179.09 2656.30 2759.12 391.65 585.56 518.87 -516.02 54.32 0.36 5958585.03 600232.10 70.29625475 -149.18636113 2949.00 18.68 178.52 2746.47 2849.29 413.17 616.44 549.64 -546.89 54.96 O.SD 5958554.17 600233.16 70.29617043 -149.18835594 3042.50 17.71 178.35 2835.29 2938.11 433.66 645.63 578.76 576.07 55.76 1.04 5958525.01 600234.34 70.29609070 -149.18834949 3137.13 19.70 176.11 2924.92 3027.74 455.42 675.87 609.07 -606.37 57.25 2.24 5958434.73 600236.24 70.29600791 -149.18833737 3220.76 19.32 175.44 3003.75 3106.57 475.92 703.90 637.00 -634.23 59,31 0.53 5958466.91 600238.67 70.29593182 -149.18832073 3262.71 19.10 175.00 3043.36 3146.18 486.14 717.71 650.80 -647.98 60.46 0.63 5958453.17 600240.00 70.29589424 -149.18831142 9.5/6' Csg 3287,00 19.17 175.62 3066.31 3169.13 492.03 725.67 658.76 -65592 67. it 0.88 5958445.24 600240.76 70.29587257 -149.18830615 Drilling Office 2.6.1166.0 Prudhoe Bay Unit - W OA1Z-PAD1Z-6812-6812-68 8/26/2013 10:30 AM Page 1 of 3 MD Incl Azim True TVDSS TVD VSEC AHD Closure NS EW OLS Northing Easting Latitude Longitude CommeMa (h) 1") (°) (ft), (ft) (ft) (ft) (ft) (ft) (ft) (°I100ft) (ftUS) (ftUS) (°) (I 3357.72 19.37 177.40 3133.07 3235.89 508.95 749.00 692.08 -679.21 62.53 0.88 5958421.98 600242.49 70.29580894 -149,18829467 3452.84 19.55 166.34 322239 3325.61 533.52 780.60 713,59 -710.44 67.00 3.87 5958390.01 600247.38 70.29572361 -149.18825843 354754 18.93 157.67 3312.22 3415.04 560.73 811.76 744.01 -740.05 76.58 3.08 5958361-33 600257.35 70.29564271 -149.18818087 3643.44 16.31 146.84 3403.12 3505.94 589.50 842.29 772.41 -767.06 9074 3.66 5958334.51 600271.86 70-29556893 -149.18806628 3738.20 17.06 135.81 3493,43 3596.25 617.84 871.00 796.93 -789.50 108.57 3.77 5958312.32 600290.00 70.29550764 -149.16792187 3833.64 18.70 127,76 3584.27 368209 647.07 900.26 819.36 -808-91 130.43 3.10 595829320 600312.11 70.29545461 -149.18774490 3927.94 20.93 121.39 3672.99 3775.81 678.63 932.19 841.67 -826.94 156.77 3.29 5958275.52 600338.68 70.29540534 -14918753168 4023.16 22.36 114.64 3761.51 3864.33 712.48 967.28 864.00 -843.36 187.76 3.01 5956259.53 600369-88 70,29536049 -149.18728080 411735 24.95 109.92 3847.79 3950,61 74777 1005.05 886.05 -857.60 222.73 3.40 5958245.75 600405.04 70,29532158 -149.18699767 4211.91 27.34 105.10 3932.67 403549 785,32 1046.69 906.78 -870.05 262.45 3.38 5956233.83 600444 42 70,29528755 -149.18667605 4307.05 29.47 99.54 4016.37 4119.19 824.16 1091.92 931.54 -879.63 306.64 3.57 5958224.85 600489.23 70.29526140 -149.18631832 4402.18 30.47 92,44 4098.81 4201.63 862.02 1139.40 952.68 -684.53 353.83 3.87 5958220.57 600536.47 70.29524799 -149.18593626 4496.56 3072 86.51 4180,07 4282.89 896,81 1187.40 971.11 -884.D8 401.61 3.21 5958221.66 600584.44 70.29524021 -149.18554779 4591.41 31.39 83.72 4261.32 4364.14 929.61 1236.32 988.55 -879.91 450.55 1.67 5958226 49 600633.11 70.29526061 -149.18515320 4685.71 29.25 81.97 4342.72 4445.54 960.12 1283.92 1005.81 -874.00 497.78 2.45 5958233.02 600680.26 70.29527674 -149.18477081 4781.93 28.28 81,85 4427.07 4529.89 989.20 1330.23 1023.75 -867.49 543.62 1.01 5958240.15 600726.00 70.29529453 -149.18439967 '- 4875.99 28.88 86.29 4509,68 4612.50 1018.76 1375.21 1044.35 -862-86 588.35 2.35 5958245.37 600770.66 70.29530716 -149.18403753 4971.48 29.48 86.54 4593.05 4695.87 1050.76 1421.76 1068.68 -859.95 634.81 0.64 5958248.90 600817.08 70.29531510 -149.18366133 5067.10 28.21 86.07 4676.80 4779.62 1082.40 1467,89 1D94.52 -856.98 680.85 1.35 5958252.48 600863.07 70.29532320 -149.18328863 5161.22 26.44 85.41 4760.42 486314 1111.72 1511.10 1119.38 -853.78 723.93 1.91 5958256.26 600906.10 70,29533194 -149.18293982 5256.49 26.58 88.54 4845.67 4948.49 1141.24 1553.61 1145.62 -851.54 766.38 1.47 5958259.06 600948,52 70.29533805 -149.18259612 5349.14 26.34 8240 4928-62 5031.44 1170-42 1594.89 1172.56 -850.07 80764 0.61 5958261.07 600989.74 70.29534203 -149.18226211 5445.47 28.71 85.95 5014,04 5116.86 1201.14 1639.40 1201.76 -847.47 852-07 2.56 5958264.27 601034.14 70,29534913 -149.18190236 5540.43 28.79 85.88 5097.29 5200,11 1232.24 1685.08 1232,25 -844.22 897.63 0.09 5958268.13 601079.64 70.29535800 -149,18153350 5635,87 28.75 65.43 5180.95 5283.77 1263.37 1731.01 1263.69 -840.74 94343 013 5959272.22 601125.39 70.29536749 -149.18116267 5731.20 20.73 83.79 5264.54 5367.36 1293.80 1776.85 1295.33 -836.43 989.07 0.83 5958277.13 601170.96 70.29537924 -149.18079322 5825.71 28.32 82.42 5347.58 5450.40 1322.88 1821,98 1326.45 -831.02 1033.67 0.82 5958283.14 601215.68 70.29539401 -149.18043048 5920.51 27.99 85.10 5431.17 5533.99 1352.07 1866.71 1358.42 -826.15 1078.33 1.38 5958288.60 601260.06 70.29540729 -149.18007055 6015.12 27.19 83.35 5515.02 5617.84 1380.95 1910.52 1390.67 -821.75 1121.92 1.20 5958293.58 601303.59 70.29541929 -149.17971761 610&64 29.01 83.84 5597.51 5700.33 1409.62 1954.57 1423.40 -816.84 1165-69 1.96 5958299.07 601347.29 7029543269 -149.17936321 6203.60 28.71 83.00 5680.68 5783,50 1439.34 2000.40 1457.99 -81159 1211.22 0.53 5958304.93 601392.74 70.29544701 -149.17899457 6298.46 28.94 86.85 5763.79 5866.61 1469.88 2046.12 1493.85 -807.55 125676 1.97 5958309.57 601438.21 70.29545802 -149.17862591 6393.14 28.07 86.42 5846.99 5949.81 150107 2091.31 1530,59 -804.90 1301.86 0.94 5958312,82 601483.28 70.29546524 -149.17826071 6488.02 27.34 85.79 5930.99 6033.81 1531.21 2135.42 1566.66 -801.91 1345.87 0.83 5958316,40 601527.24 70.29547340 -149.17790440 6582.85 28.53 87.63 6014.77 6117.59 1561.91 2179.84 1603.66 -799.38 1390.22 1.55 5958319.53 601571.54 70.29548030 -149.17754535 6677.30 26.97 87.07 6098.36 6201.18 1592.66 2223.82 1640-90 -797.35 1434.15 1.67 595832214 601615.44 70,29548582 -149.17718969 6773.28 29.03 89,17 6183.10 6265.92 1624.60 2268.87 1679.71 -795.90 1479,17 2.38 5958324.19 601660.44 70/9548975 -149.17682513 6868.66 28.52 88.45 6266.70 6369.52 1657.52 2314.78 1719.83 -794,95 1525.08 0.65 5958325.75 601706.32 7029549233 -149.17645350 6963.56 29.12 88.16 6349.85 6452.67 1690.04 2360.53 1759.09 -793.59 1570.80 0.65 5958327.71 601752.02 70.29549600 -149.17608328 7058.57 28.12 87.32 6433.25 6536.07 1722.08 2406.04 1799.81 -791.60 1616.28 1.13 5956330.11 601797.46 70,29560086 -149.17571511 7153.33 27.88 82.45 6516.93 6619.75 1751.76 2450.50 1837.97 -787.85 1660.55 2.43 5958334 65 601841.68 70.29551164 -149.17535663 724748 28.97 84.48 6599.73 6702.55 1780.85 2495-32 1876.16 -782.76 1705.07 1.55 5958340.33 601886.12 70.29552551 -1.49.17499618 7343.60 29.17 84.86 6683.74 6786,56 1811.90 2542.02 1916.76 -778.42 1751.57 0.28 5958345.29 601932.55 70.29553733 -149.17461969 7437.68 29.45 85.89 6765.78 6868.60 1842.94 2688.07 1957.32 -774.71 1797,48 0.61 5958349.61 601978.40 70.29554744 -149.17424803 7533.20 30.32 85.90 6848.60 695142 1875,31 2635.67 1999.67 -771.26 1844.95 0.91 5958353.69 602025.81 70,29655683 -149,17386371 7626.91 29.58 85.61 6929.79 7032.61 1907.04 2682.45 2041.47 -767.76 1891.60 0.80 5958357.82 602072.41 70 29556637 -149.17348599 7721.95 31.11 87.38 7011.81 7114,63 1940.10 2730.46 2084.88 -764.84 1939.52 1.86 5958361.37 602120.28 70.29557431 -149.17309801 7817,60 31.27 87.03 7093.63 7196.45 1974.63 2779.99 2130.12 -762.43 1988.99 0.25 5958364.45 602169.72 70.29558088 -149.17269743 7912.30 30.77 86.68 7174.79 7277.61 2008.44 2828.80 2174.75 -759.75 2037.72 0.56 5958367.77 602218.40 70.29558815 -149.17230291 8006.80 33.51 87,98 7254.80 7357.62 2043.59 2879.06 2221,08 -75743 2087.94 2,99 5958370.76 602268.58 70.29559445 -149.17189637 8100.15 33.89 92.65 7332.48 7435.30 2081.64 2930.84 2269.90 -757.73 2139-69 2,80 5958371.16 602320.33 70.29559361 -149.17147731 8195.68 34.46 94.56 741151 7514.33 2123.11 2984.50 2321.55 -761.11 2193.24 1,27 5958368.49 60237191 70.29558433 -149.17104377 0290.80 33.82 93.83 7490.24 7593.06 2164.71 3037.88 2373.17 -765.01 2246.48 0.80 5958365.29 602427.19 7029557361 -149,17061275 8385.14 33.21 93.59 7568.90 767112 2205.03 3089.97 2423.50 -766.38 2298.46 0-66 5958362.62 602479.21 70.29556436 -149,17019190 8480.00 35.36 9323 7647.27 775009 2246.20 3143.40 2475.13 -771.56 2351.80 2.28 5958360.15 602532.58 70.29555564 -149.16976007 8574.50 35.31 92,72 7724.36 7827.18 2280.05 3198.05 2527.92 -774.40 2406.38 0.32 5958358.05 602587.19 70.29554784 -149.16931818 8669.37 35.09 92.04 7801.88 7904.70 2329.56 3252.74 2580.66 -776.67 2461.02 0.47 5958356.50 602641.85 70.29554159 -149.16887582 6764.18 34.82 90.57 7879.59 7982.41 2370.12 3307.06 2632.87 -777.91 2515.32 0.93 5958355.99 602696.16 70,29553816 449.16843618 8859.41 34.41 89.52 7957.97 8060,79 2409.71 3361.15 2684.61 -777.95 2569.42 0.76 5958356.66 602750.24 70,29553798 -149.16799822 8954.22 33.93 88.80 8036.41 8139.23 2448.12 3414.40 2735.39 -777.17 2622.66 0-66 5958358.15 602803.47 7029554006 -149.16756714 Drilling Office 2.6.1166.0 Prudhoe Bay Unit - WOA\Z-PAD2-68\Z-6812-68 8/2612013 10:30 AM Page 2 of 3 Final Definitive Survey Verified and Signed -off All targets and/or well position objectives have been achieved. ❑' Yes ❑ No I have checked to the best of my ability that the following data /s correct: p Surface Coordinates C:1 Declination & Convergence ❑+ ORS Survey Corrections Q Survey Tool Codes �L SLB DE: Client Representative: Date: Drilling Office 2.6.1166.0 Prudhoe Bay Unit- WOAIZ-PAD1Z-687--6812-68 8/26/2013 10:30 AM Page 3 of 3 MD Incl Azin True TVDSS TVD VSEC AHD Closure NS EW OLS Northing Easting Latitude Longitude Comments (k) PI C) (ft) Ift) (ft) (it) (ft) (ft) lkl ('110010 MUS) (ftu8) 1% PI 9049.09 33.85 91.56 8115.17 8217.99 2486.91 3.567.30 2736.18 -777.34 2675.55 1.62 5958358.69 602856.35 70.29553356 -149.16713696 9143.77 32.45 90,35 8194.44 8297.26 2525.37 3519.07 2836.16 -778.21 2727.31 1,64 5950358.51 602908.11 70.29553712 -149.16671987 9238.91 33.61 90.86 8274.20 8377.02 2563.67 3570.92 2886.21 -778.76 2779.16 1.25 5958358.65 602959.96 70.29553556 -149.16630004 9334.01 34.30 92.12 8353.08 8455.90 2603.44 3624.04 2937.74 -780.15 2832.26 1.04 5958357.97 603013.07 70.29553172 -149.16587017 9429.01 36.14 90.67 8430.69 8533.51 2644.40 3678.R2 2990.92 -781.47 2887.03 2.13 5958357.38 603067.84 70.29552807 -149.16542676 9523,72 35.60 90.61 8507.44 8610.26 2685.40 3734.32 3044.68 -782.09 2942.52 0.57 5958357.50 603123.33 70.29552631 -149.16497749 9555.18 35.23 90.36 8533.08 8635.90 2698.84 3752.55 3062.34 -782.24 2960.75 1.26 5958357.59 603141.56 70.29552587 -149.16482990 9635.53 34.45 90.05 8599.02 8701.84 2732.52 3798.45 3106.78 -782.41 3006.65 1.00 5958356.04 603187.46 70.29552537 -140.16445826 7' 9702.00 34.52 91.38 8653.61 075603 276037 383609 3143.33 -782.87 3044.28 1.13 5956356,07 603225.09 7029552405 -149.16415359 9714.28 34.54 91.62 0663.93 8766.75 2765.58 3843.05 3150,12 -783.06 3051.24 1.13 5958357.98 603232.05 70.29552354 -149.16409725 9746.58 36,87 92.28 8690.16 $792.98 2179.80 3861.90 3168.53 -783.70 3070.08 7.31 5958357.59 603250.69 70.29552176 -149.16394473 9778.16 37.76 98.57 8715.28 8818.10 2794.96 3881.03 3187.42 -785.52 3089.11 12.39 5958356.02 603269.95 70.29551677 -149.16379062 9809.78 39.04 102.72 8740.06 8842.68 2811.55 3900.66 3207.02 -789.16 3106.41 9.10 5958352.64 603289.29 70.29550682 -149.16363445 9842.18 41.71 109.20 8764.76 8867.58 2630.23 3921.84 3227.97 -794,95 3128.55 15.35 5958347.12 603309.60 70.29549096 -149.16347137 9873.33 45.45 109.66 8787.32 8890.14 2849.91 3943.11 3249.35 -802.10 3148.80 12.05 5958340.24 603329.84 70.29547142 -14916330747 9904.20 4954 110.19 8808.17 8910.99 2870.85 3965.% 327L99 -809.85 3170.19 13.31 5958332.77 603351.33 70.29545020 -149,16313432 -' 9933.29 51.72 110.85 8826.62 8929.44 2891.63 3988.35 3294.35 .817.74 3191.25 7.70 5958325.17 603372.49 70.29542864 -149.16296385 9965.77 54.84 111.85 8846.04 8948.86 2915.82 4014.38 3320.19 -827.22 3215A9 9.92 5958316.01 603396.86 70.29540271 -149.16276761 9998.81 57.55 111.02 8864.42 8967.24 2941.35 4041.83 3347.44 -837.25 3241.04 8.46 5958306.33 603422.54 70.29537526 -149.15256075 Tia4n Survey 10031.66 60.33 112.60 8881.37 8984.19 2967.59 4069.97 3375.35 -847.71 3267.16 9.41 5958296.22 603448.79 70.29534666 -149.16234932 10062.38 61.16 110.42 8096.38 8999.20 2992.52 4096.77 3401.95 -857.53 3292,10 6.75 5958286.73 603473.85 70.29531981 -149.16214749 10096.21 53.55 111.17 8914.62 9017.44 3018.87 4125.23 3430.25 -867.63 3318.71 22.57 5958276.99 603500.60 70.29529219 -149.16193206 10127.54 W08 113.60 8931.76 9034.56 3043.40 4151.44 3456.21 -877.63 3342.93 21.83 5958267.31 603524.95 70.29526485 -149.16173600 10162.00 66.50 113.00 8946.70 9049.52 3072.61 4182.46 3486.89 -889.69 3371.42 24,48 5958255.43 603553.60 70.29523130 -149.16150536 10200.00 77.50 113.00 8957.79 9060.61 3106.72 4218.76 3522.82 -904.08 3404.84 23.68 5958241.69 603587.20 70.29519251 -149.16123487 r 10233.00 84.00 113.00 8963.10 9066.92 , 3137.31 4251.31 3555.05 -916.80 3434.80 19.70 5958229.38 603617.33 70.29515773 -149.16099231 Survey Error Model: ISCWSA Rev 0 -" 3-D 95.00096 Confidence 2.7955 sigma Survey Program: Description MD From MO To EOU Freq Hole Size Casing Diameter Survey Tool Type Borehole I Survey 0.000 464.000 Ac[ Sim 12.250 9.625 Y - Z-681,81 I 2-881,81 495.110 3220.760 Act Stns 12.250 9.825 MWD+IFR+MS Z-68PB1 1 Z-68PBI 3262.710 3262.710 Act Sins 8.750 TD00 INC+TREND Z-68PO1 1 Z-66PB1 3357.720 9635.530 Act Stns 6.750 7,000 P,IWD+IFR+MS Z-68PS11 Z-681,81 9714.280 9714.280 Act Stns 8.750 7.000 INC+TREND Z-68PB1 IZ-68PB1 9746.580 9998.810 Act Stns 6.125 4.500 MWD+IFR+MS Z-68PB1 1 Z-68PB1 10031.660 10031.660 Act Sins 6.125 4.500 MWD+IFR+M$ Z -68P81 IZ-68POl 10062.380 10127.540 Act Sine 6.125 4.500 MWD Z-681 Z-68 10442.510 10538.000 Act Stns 6.125 4.500 BLIND 2.661 Z-68 Legal Description; Northlnp (Y) Eesting (X) Surface; 4290.4 FSL 2508.7 FEL S19 Ti1N R12E UM G 1 UI7 230 800170.920 BHL: 3373 FSL 4355 FEL 20 TI IN R12EUM 5958229.380 603617.330 Final Definitive Survey Verified and Signed -off All targets and/or well position objectives have been achieved. ❑' Yes ❑ No I have checked to the best of my ability that the following data /s correct: p Surface Coordinates C:1 Declination & Convergence ❑+ ORS Survey Corrections Q Survey Tool Codes �L SLB DE: Client Representative: Date: Drilling Office 2.6.1166.0 Prudhoe Bay Unit- WOAIZ-PAD1Z-687--6812-68 8/26/2013 10:30 AM Page 3 of 3 Printed 9/4/2013 3:53:19PM North America -ALASKA- BP Page 1 of Cementing Report Common Well Name: Z-68 / OH Reportno.: 1D Report date: 7/31/2013 Project: Prudhoe Bay Site: PB Z Pad Spud Date/Time: 7/27/2013 Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: 8/21/2013 AFE No.: Contractor: PARKER DRILLING CO. Rig Name/No.: PARKER 273 Rig Release: 8/26/2013 X3 -013H1 -C: DRILL (8,820,870.00 ) UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) General Information Job type: Primary Cement job start date/time: 7/30/2013 11:00PM Job end date/time: 7/31/2013 3:30AM Cement Company: SCHLUMBERGER Cementer: JARED WALLACE / BRAD BEVELHIMER Cemented String: SURFACE CASING String Size: 9.625 (in) String Set TMD: 3,280.00 (usft) Hole Size: 12.250 (in) Pipe Movement Pipe Movement: RECIPROCATING Rotating Time (Start -End): RPM: 0 (rpm) Rotating Torque (init/avg/max): (ft-Ibf) Reciprocating Time (Start -End): 11:00:00 pm 3:30:00 am Recip Drag Up/Down: 195.0 - 0.0 (kip) SPM: 0.25 (spm) Stroke Length: 10.00 (usft) Fluid Name: OLD MUD Fluids (1 of 4) Slurry Type: SPACER Purpose: SPACER Class: SPACER Description: SPACER WEIGHTED Density: 10.00 (ppg) Yield: Mix Water Ratio: Excess: Mix Method: BATCH Sacks Used: Water Volume: 98.0 (bbl) Excess Slurry Volume: 0.0 (bbl) Density Measured by: Other Volume: Total Vol in Well: 0.0 (bbl) Slurry Volume: 100.0 (bbl) Excess Measured From: Mud Type: Density: 9.20 (ppg) PV: 24.00 (cp) YP: 19.000 (Ibf/100W) Viscosity: 0.00 (s/qt) Gels 10 Sec: 0.000 (Ibf/100ft') Gels 10 Min: 0.000 (Ibf/1001t�) Fluid Name: CEMENT Fluids (2 of 4) Slurry Type: CEMENT Purpose: PRIMARY Class: LITE Description: LEAD SLURRY Density: 11.00 (ppg) Yield: 1.9100 (ft'/sk) Mix Water Ratio: 6.823 (gal/sk94) Excess: 350.00(%) Mix Method: BATCH Sacks Used: 1,570.00 (9411b sacks) Water Volume: 255.1 (bbl) Excess Slurry Volume: 1,869.3 (bbl) Density Measured by: DENSOMETER Other Volume: Total Vol in Well: 534.0 (bbl) Slurry Volume: 534.1 (bbl) Excess Measured From: EST. GAUGE HOLE Mud Type: Density: 9.20 (ppg) PV: 24.00 (cp) YP: 19.000 (Ibf/100ft2) Viscosity: 0.00 (s/qt) Gels 10 Sec: 0.000 (Ibf/100ft2) Gels 10 Min: 0.000 (Ibf/100ft-) Additives Name Type Amount Units Concentration Unit D046 ANTIFOAM % 0.200 % BWOC D185 DISPERSANT GALS 0.070 GAL/SX D177 RETARDER GALS 0.100 GAL/SX Printed 9/4/2013 3:53:19PM North America -ALASKA - BP Page 2 of 4 Cementing Report Common Well Name: Z-68 / OH Report no.: 1D Report date: 7/31/2013 Project: Prudhoe Bay Site: PB Z Pad Spud Date/Time: 7/27/2013 Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date 8/21/2013 AFE No.: Contractor: PARKER DRILLING CO. Rig Name/No.: PARKER 273 Rig Release: 8/26/2013 X3-013H1-C:DRILL (8,820,870.00 ) UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Fluid Tests Thick time Thick Free water Free water Fluid loss Fluid loss Fluid loss Comp Comp Comp Comp Comp Strength Comp Strength (hr) temp. (%) temp. (cc/30min) temp. press. Strength Strength Strength Strength Time Pressure 2 Temperature 2 (°F) (°F) (°F) (psi) Time 1 Pressure 1 Temperature 1 2 (psi) (°F) (min) (psi) (°F) (min) 6.67 75.00 0.00 80.00 0.0 0.00 0.00 655 50 60.00 1,382.0 500 48.00 Fluid Name: CEMENT Fluids (3 of 4) Slurry Type: CEMENT Purpose: PRIMARY Class: G-CLASS Description: TAIL SLURRY Density: 15.80 (ppg) Yield: 1.1700 (ft'/sk) Mix Water Ratio: 5.134 (gal/sk94) Excess: 40,00(%) Mix Method: BATCH Sacks Used: 408.00 (941b sacks) Water Volume: 49.9 (bbl) Excess Slurry Volume: 34.0 (bbl) Density Measured by: DENSOMETER Other Volume: 0.0 (bbl) Total Vol in Well: 85.0 (bbl) Slurry Volume: 85.0 (bbl) Excess Measured From: EST. GAUGE HOLE Mud Type: Density: 9.20 (ppg) PV: 24.00 (cp) YP: 19.000 (Ibf/100ft2) Viscosity: 0.00 (s/qt) Gels 10 Sec: 0.000 (Ibf/100ft2) Gels 10 Min: 0.000 (Ibf/100W) Additives Name Type Amount Units Concentration Unit D046 ANTIFOAM % 0.200 % BWOC DO65 DISPERSANT % 0.300 % BWOC D167 FLUID LOSS % 0.400 % BWOC D186 ACCELERATOR GALS 0.100 GAL/SX D185 DISPERSANT GALS 0.070 GAL/SX Fluid Tests Thick time Thick Free water Free water Fluid loss Fluid loss Fluid loss Comp Comp Comp Comp Comp Strength Comp Strength (hr) temp. (%) temp. (cc/30min) temp. press. Strength Strength Strength Strength Time Pressure 2 Temperature 2 ('F) (°F) (°F) (psi) Time 1 Pressure 1 Temperature 1 2 (psi) (°F) (min) (psi) (°F) (min) 4.33 75.00 0.00 80.00 100.0 75.00 1,000.00 489 50 72.00 1,024.0 500 65.00 Printed 9/4/2013 3:53:19PM Printed 9/4/2013 3:53:19PM North America - ALASKA - BP Page 3 of 4 Cementing Report Common Well Name: Z-68 / OH Report no.: 1 D Report date: 7/31/2013 Project: Prudhoe Bay Site: PB Z Pad Spud Date/Time: 7/27/2013 Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: 8/21/2013 AFE No.: Contractor: PARKER DRILLING CO. Rig Name/No.: PARKER 273 Rig Release: 8/26/2013 X3 -013H1 -C: DRILL (8,820,870.00 ) UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Fluid Name: DISPLACEMENT Fluids (4 of 4) Slurry Type: DISPLACEMENT Purpose: DISPLACEMENT Class: Description: DISPLACEMENT Density: 9.20 (ppg) Yield: Mix Water Ratio. Excess: Mix Method: ON -THE -FLY Sacks Used: Water Volume: Excess Slurry Volume: 0.0 (bbl) Density Measured by: PRESS. BAL Other Volume: Total Vol in Well: Slurry Volume: 235.0 (bbl) Excess Measured From: Mud Type: Density: 9.20 (ppg) PV: 24.00 (cp) YP: 19.000 (Ibf/l00ft') Viscosity: 0.00 (s/qt) Gels 10 Sec: 0.000 (Ibf/100ft') Gels 10 Min: 0.000 (Ibf/100ft2) Stages Stage Stage Type Est. Top Est. Bottom Mud Circ. Mud Circ. TopBottom plug Pressure Float Pressure Returns Circulate Cmt Vol to Total Annular no. (usft) (usft) Rate Press. Plug Plug Bumped Bumped Held Held Prior Surface Mud Lost Flow (gpm) (psi) (psi) (min) (hr) (bbl) (bbl) After 1 PRIMARY CEMENT 402.00 3,280.00 420.0 195.00 Y Y Y 748.00 Y 2.00 PARTIAL TO NONE 8.50 0.0 0.0 Pumping Schedule Fluid pumped Volume Avg. Max Disp. Slurry Top Slurry Base Start Mix Cmt Start Slurry Pumping end Start Disp Foam Gas Type Gas Vol BH circ. Bh static Pumped Disp. Rate TMD TMD Pmp date/time job Used temp. temp. (bbl) Rate (bbl/min) (usft) (usft) (scf) (bbl/min) CEMENT - TAIL SLURRY 70.0 5.00 5.00 3,280.00 3,280.00 N 76.00 53.00 DISPLACEMENT- 223.0 10.00 10.00 402.00 3,280.00 23:21 23:30 7/31/2013 3:30 2:47 N 76.00 53.00 DISPLACEMENT OLD MUD - SPACER 100.0 5.00 5.00 46.58 46.58 N WEIGHTED 76.00 53.00 CEMENT- LEAD SLURRY 598.0 5.00 5.00 402.00 3,280.00 N 76.00 53.00 Printed 9/4/2013 3:53:19PM Printed 9/4/2013 153 19P North America -ALASKA - BP Page 4 of 4 Cementing Report Common Well Name. Z-68 / OH Report no.: 1D Report date. 7/31/2013 Project: Prudhoe Bay Site: PB Z Pad Spud Date/Time: 7/27/2013 Event Type: DRL- ONSHORE (DON)- Start Date: 7/25/2013 End Date: 8/21/2013 — - AFE No.: Contractor: PARKER DRILLING CO. Rig Name/No.: PARKER 273 Rig Release: 8/26/2013 X3-013H1-C: DRILL (8,820,870.00 ) UWI: 500292349300 Active datuSea m: Z-68 P273 ACTUAL @102.82usft (above Mean Level) Tests Casing Test Shoe Test Liner Top Test Test Pressure: 3,500.00 (psi) FIT/LOT: 18.10 (ppg) Liner Overlap: (usft) Time: 30 (min) Tool: N Positive Test: (ppg) Positive Test Tool: N Cement Found between Shoe and Collar: N Open Hole Length: 31.00 (usft) Negative Test: (ppg) Negative Test Tool: N Hours Before Start (hr) Time before test: (hr) Cmt Found on Tool: N Log/Survey Evaluation Interpretation Summary CBL Run N Cement Top: 46.58 (usft) Under Pressure: (psi) How Determined: VISUAL CHECK Bond Quality: TOC Sufficient: Y CET Run: N Job Rating: POOR Bond Quality: If Unsuccessful, Detection Indicator: Temp Survey: N Remedial Cement Required: Y Hrs Prior to Log: (hr) How Determined: 1 Printed 9/4/2013 153 19P Printed 9/4/2013 3:54:08PM North America - ALASKA - BP Page 1 of 3 Cementing Report Common Well Name: Z-68 / OH Report no.: 1E Report date: 8/1/2013 Project: Prudhoe Bay Site: PB Z Pad Spud Date/Time: 7/27/2013 Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: 8/21/2013 AFE No.: Contractor: PARKER DRILLING CO. Rig Name/No.: PARKER 273 Rig Release: 8/26/2013 X3-013H1-C:DRILL (8,820,870.00 ) UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) General Information Job type: Primary Cement job start date/time: 8/1/2013 4:30AM Job end date/time: 8/1/2013 11:30AM Cement Company: SCHLUMBERGER Cementer: JARED WALLACE / BRAD BEVELHIMER Cemented String: SURFACE CASING String Size: 9.625 (in) String Set TMD: 3,280.00 (usft) Hole Size: 12.250 (in) Pipe Movement Pipe Movement: NO MOVEMENT Rotating Time (Start -End): RPM: 0 (rpm) Rotating Torque (iniUavg/max): (ft-lbf) Reciprocating Time (Start -End): Recip Drag Up/Down: - (kip) SPM Stroke Length: Fluid Name: CEMENT Fluids (1 of 1) Slurry Type: CEMENT Purpose: PRIMARY Class: LITE Description: LEAD SLURRY Density: 11.00 (ppg) Yield: 1.9100 (ft'/sk) Mix Water Ratio: 6.823 (gal/sk94) Excess: Mix Method: ON -THE -FLY Sacks Used: 852.00 (941b sacks) Water Volume: 138.4 (bbl) Excess Slurry Volume: 0.0 (bbl) Density Measured by: DENSOMETER Other Volume: 0.0 (bbl) Total Vol in Well: 280.0 (bbl) Slurry Volume: 289.8 (bbl) Excess Measured From: Mud Type: Density: PV: YP: Viscosity: Gels 10 Sec: Gels 10 Min: Additives Name Type Amount Units Concentration Unit D046 ANTIFOAM % 0.200 % BWOC D185 DISPERSANT GALS 0.070 GAL/SX D177 RETARDER GALS 0.010 GAL/SX Fluid Tests Thick time Thick Free water Free water Fluid loss Fluid loss Fluid loss Comp Comp Comp Comp Comp Strength Comp Strength (hr) temp. (%) temp. (cc/30min) temp. press. Strength Strength Strength Strength Time Pressure 2 Temperature 2 (°F) (°F) (°F) (psi) Time 1 Pressure 1 Temperature 1 2 (psi) (°F) (min) (psi) (°F) (min) 6.70 80.00 0.00 80.00 660 50 48.00 1,380.0 500 48.00 Printed 9/4/2013 3:54:08PM Printed 9/4/2013 3:54:08PM North America -ALASKA - BP Page 2 of 3 Cementing Report Common Well Name: Z-68 / OH Report no.. 1E Report date. 8/1/2013 Project: Prudhoe Bay Site: PB Z Pad Spud Date/Time: 7/27/2013 Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: 8/21/2013 AFE No.: Contractor: PARKER DRILLING CO. Rig Name/No.: PARKER 273 Rig Release: 8/26/2013 X3-013H1-C:DRILL (8,820,870.00 ) UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Stages Stage Stage Type Est. Top Est. Bottom Mud Circ. Mud Circ. Top Bottom Plug Pressure Float Pressure Returns Circulate Cmt Vol to Total Annular no. (usft) (usft) Rate Press. Plug Plug Bumped Bumped Held Held Prior Surface Mud Lost Flow (gpm) (psi) (psi) (min) (hr) (bbl) (bbl) After 1 TOP FILL 46.58 402.00 84.0 1,400.00 PARTIAL 2.50 10.0 Pumping Schedule Fluid pumped Volume Avg, Max Disp. Slurry Top Slurry Base Start Mix Cmt Start Slurry Pumping end Start Disp Foam Gas Type Gas Vol BH circ. Bh static Pumped Disp. Rate TMD TMD Pmp date/time job Used temp. temp. (bbl) Rate (bbl/min) (usft) (usft) (scf) (bbl/min) CEMENT- LEAD SLURRY 46.58 402.00 4:19 4:30 8/2/2013 1:48 N 75.00 53.00 Tests Casing Test Shoe Test Liner Top Test Test Pressure: (psi) FIT/LOT: (ppg) Liner Overlap: (usft) Time: (min) Tool: N Positive Test: (ppg) Positive Test Tool: N Cement Found between Shoe and Collar: N Open Hole Length: (usft) Negative Test: (ppg) Negative Test Tool: N Hours Before Start: (hr) Time before test: (hr) Cmt Found on Tool: N LoglSurvey Evaluation Interpretation Summary CBL Run: N Cement Top: 46.58 (usft) Under Pressure: (psi) How Determined: VISUAL CHECK Bond Quality: TOC Sufficient: Y CET Run: N Job Rating: GOOD Bond Quality: If Unsuccessful, Detection Indicator: Temp Survey: N Remedial Cement Required: N Hrs Prior to Log: (hr) How Determined: 0 Remarks TOP OFF CEMENT JOB FOR 9-5/8" SURFACE CASING 1 - SLB PUMP 5 BBLS FRESH WATER AHEAD AND PRESSURE TEST LINES TO 250 PSI LOWAND 4000 PSI HIGH FOR FIVE MIN EACH (PASS PER LEAKTIGHT CRITERIA). 2 - SLB PUMP 64 BBLS 11.0 PPG LITECRETE CEMENT UNTILANNULUS PACKED OFF, RETURNS WERE LOSTAND PIPE STUCK. CONTINUED TO PUMP WHILE TRYING TO FREE PIPE WITH RIG FLOOR TUGGERS. PUMPED AWAY 23 BBLS FOR ATOTAL OF 87 BBLS PUMPED. RIGGED UP TOP DRIVE ELEVATORS AND PULLED PIPE FREE WITH 40 KLBS OVERPULL. ATTEMPT TO REGAIN CIRCULATION BUT STRING IS PACKED OFF. PULL OUT OF HOLE AND CLEAR PIPE. 3 -RUN BACK IN HOLE WITH 1" TUBING AND TAG AT 215' MD. CIRCULATE HOLE CLEAN. SLB PUMP ADDITIONAL 193 BBLS 11.0 PPG LITECRETE CEMENT AND ACHEIVED CEMENT RETURNS TO SURFACE AT 193 BBLS AWAY. SHUTDOWN PUMPS, MONITOR WELL (STATIC). PUMP ADDITIONAL 10 BBLS CEMENT AND GET 10 BBLS CEMENT BACK TO SURFACE. MW IN/OUTAT THE CONCLUSION OF PUMPING= 11.0 PPG. PULLOUT OF HOLE AND CLEANOUT/LAYDOWN 1" TUBING. MONITOR WELL (STATIC). Printed 9/4/2013 3:54:08PM North America -ALASKA - BP Cementing Report Common Well Name. Z-68 / OH Project: Prudhoe Bay Site: PB Z Pad Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: 8/21/2013 Contractor: PARKER DRILLING CO. Rig Name/No.: PARKER 273 Rig Release: 8/26/2013 UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Remarks TOTAL CEMENT PUMPED = 290 BBLS, 852 SACKS (1.91 CUFT/SK) 11.0 PPG LITECRETE CEMENT TO SURFACE AT 280 TOTAL BBLS AWAY TOTAL CEMENT TO SURFACE = 10 BBLS - NOTIFY AOGCC REPRESENTATIVE LOU GRIMALDI BY EMAIL WITH JOB DETAILS/RESULTS Printed 9/4/2013 3:54:08PM Report no.: 1 E Spud Date/Time: 7/27/2013 AFE No.: X3 -013H1 -C: DRILL (8,820,870.00 ) Report date: 8/1/2013 Page 3 of 3 Printed 9/4/2013 3:56:54PM North America - ALASKA - BP Page 1 of 3 Cementing Report Common Well Name. Z-68 / OH Report no.: 2D Report date: 8/10/2013 Project: Prudhoe Bay Site: PB Z Pad Spud Date/Time: 7/27/2013 Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: 8/21/2013 AFE No.: Contractor: PARKER DRILLING CO. Rig Name/No.: PARKER 273 Rig Release: 8/26/2013 X3-013H1-C: DRILL (8,820,870.00 ) UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) General Information Job type: Primary Cement job start date/time: 8/10/2013 9:30AM Job end date/time: 8/1/2013 1:OO13M Cement Company: SCHLUMBERGER Cementer: CRAIG SAMPSELL Cemented String: INTERMEDIATE CASING 1 String Size: 7.000 (in) String Set TMD: 9,702.64 (usft) Hole Size: 8.750 (in) Pipe Movement Pipe Movement: RECIPROCATING Rotating Time (Start-End): RPM: Rotating Torque (init/avg/max): (ftdb Reciprocating Time (Start-End): Recip Drag Up/Down: - (kip) SPM: Stroke Length: Fluid Name: SPACER Fluids (1 of 3) Slurry Type: SPACER Purpose: SPACER Class: Description: SPACER WEIGHTED Density: 11.00 (ppg) Yield: Mix Water Ratio: Excess: Mix Method: Sacks Used: Water Volume: Excess Slurry Volume: 0.0 (bbl) Density Measured by: Other Volume: Total Vol in Well: Slurry Volume: 45.0 (bbl) Excess Measured From: Mud Type: Density: 10.60 (ppg) PV: 10.00 (cp) YP: 19.000 (Ibf/100ft�) Viscosity: 45.00 (s/qt) Gels 10 Sec: 8.000 (Ibf/100ft2) Gels 10 Min: 9.000 (Ibf/100W) Fluid Name: CEMENT Fluids (2 of 3) Slurry Type: CEMENT Purpose: PRIMARY Class: LITE Description: LEAD SLURRY Density: 11.50 (ppg) Yield: 1.7600 (ft'/sk) Mix Water Ratio: 4.035 (gal/sk94) Excess: 30.00(%) Mix Method: ON-THE-FLY Sacks Used: 597.00 (941b sacks) Water Volume: 57.0 (bbl) Excess Slurry Volume: 56.1 (bbl) Density Measured by: Other Volume: Total Vol in Well: 187.0 (bbl) Slurry Volume: 187.0 (bbl) Excess Measured From: Mud Type. Density: 10.60 (ppg) PV: 10.00 (cp) YP: 19.000 (Ibf/100ft�) Viscosity: 45.00 (s/qt) Gels 10 Sec: 8.000 (Ibf/100ft2) Gels 10 Min: 9.000 (Ibf/100W) Additives Name Type Amount Units Concentration Unit D047 ANTIFOAM AGENT 0.150 GAL/SX D202 DISPERSANT 0.200 % BWOC D600 G GAS-BLOCK 1.800 GAL/SX D167 FLUID LOSS 0.100 % BWOC D800 RETARDERAID 0,850 %BWOC Printed 9/4/2013 3:56:54PM Printed 9/4/2013 3:56:54PM North America - ALASKA - BP Page 2 of 3 Cementing Report Common Well Name: Z-68/OH Report no.: 2D Reportdate: 8/10/2013 Project: Prudhoe Bay Site: PB Z Pad Spud Date/Time: 7/27/2013 Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date 8/21/2013 AFE No.: Contractor: PARKER DRILLING CO. Rig Name/No.: PARKER 273 Rig Release: 8/26/2013 X3 -013H1 -C: DRILL (8,820,870.00 ) UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Fluid Tests Thick time Thick Free water Free water Fluid loss Fluid loss Fluid loss Comp Comp Comp Comp Comp Strength Comp Strength (hr) temp. M temp. (cc/30min) temp. press. Strength Strength Strength Strength Time Pressure 2 Temperature 2 (°F) (°F) (°F) (psi) Time 1 Pressure 1 Temperature 1 2 (psi) (°F) (min) (psi) (°F) (min) 5.38 177.00 0.00 80.00 12.0 177.00 1,000.00 Fluid Name: CEMENT Fluids (3 of 3) Slurry Type: CEMENT Purpose: SPACER Class: G -CLASS Description: TAIL SLURRY Density: 15.80 (ppg) Yield: 1.1700 (ft'/sk) Mix Water Ratio: 2.945 (gal/sk94) Excess: 30.00(%) Mix Method: BATCH Sacks Used: 101.00 (941b sacks) Water Volume: 7.1 (bbl) Excess Slurry Volume: 6.3 (bbl) Density Measured by: Other Volume: Total Vol in Well: 21.0 (bbl) Slurry Volume: 21.0 (bbl) Excess Measured From: Mud Type: Density: 10.60 (ppg) PV: 10.00 (cp) YP: 19.000 (Ibf/100W) Viscosity: 45.00 (s/qt) Gels 10 Sec: 8.000 (Ibf/100ft') Gels 10 Min: 9.000 (Ibf/100ft2) Additives Name Type Amount Units Concentration Unit D047 ANTIFOAM AGENT 0.200 GAL/SX D065 DISPERSANT 0.600 % BWOC D600 G GAS -BLOCK 2.000 GAL/SX D167 FLUID LOSS 0.200 °% BWOC D800 RETARDER AID 0.050 %BWOC Fluid Tests Thick time Thick Free water Free water Fluid loss Fluid loss Fluid loss Comp Comp Comp Comp Comp Strength Comp Strength (hr) temp. M temp. (cc/30min) temp. press. Strength Strength Strength Strength Time Pressure 2 Temperature 2 (°F) (°F) (°F) (psi) Time 1 Pressure 1 Temperature 1 2 (psi) (°F) (min) (psi) (°F) (min) 5.22 163.00 0.00 80.00 6.0 163.00 1,000.00 Printed 9/4/2013 3:56:54PM Printed 9/4/2013 3:56:54PM North America - ALASKA - BP Page 3 of 3 Cementing Report Common Well Name: Z-68 / OH Report no.: 2D Report date: 8/10/2013 Project: Prudhoe Bay Site: PB Z Pad Spud Date/Time: 7/27/2013 Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: 8/21/2013 AFE No.: Contractor: PARKER DRILLING CO. Rig Name/No.: PARKER 273 Rig Release: 8/26/2013 X3-013H1-C:DRILL (8,820,870.00 ) UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Stages Stage Stage Type Est, Top Est. Bottom Mud Circ. I Mud Circ. Top Bottom Plug Pressure FloatPressure Returns Circulate Cmt Vol to Total Annular no. (usft) (usft) Rate Press. Plug Plug Bumped Bumped Held Held I Prior Surface Mud Lost Flow (gpm) (psi) (psi) (min) (hr) (bbl) (bbl) After PRIMARY CEMENT 0.00 9,702.00 189.0 630.00 Y Y Y 1,140.00 Y FULL 6.00 Pumping Schedule Fluid pumped Volume Avg. Max Disp. Slurry Top Slurry Base Start Mix Cmt Start Slurry Pumping end Start Disp Foam Gas Type Gas Vol BH circ. Bh static Pumped Disp. Rate TMD TMD Pmp date/time job Used temp. temp. (bbl) Rate (bbl/min) (usft) (usft) (SCO (bbl/min) CEMENT- LEAD SLURRY N CEMENT - TAIL SLURRY N SPACER - SPACER N WEIGHTED Tests Casing Test Shoe Test Liner Top Test Test Pressure: 3,500.00 (psi) FIT/LOT: (ppg) Liner Overlap: (usft) Time: 45 (min) Tool: N Positive Test: (ppg) Positive Test Tool: N Cement Found between Shoe and Collar: N Open Hole Length: (usft) Negative Test: (ppg) Negative Test Tool: N Hours Before Start: (hr) Time before test: (hr) Cmt Found on Tool: N Log/Survey Evaluation Interpretation Summary CBL Run: N Cement Top: 0.00 (usft) Under Pressure: (psi) How Determined: Bond Quality: TOC Sufficient: N CET Run: N Job Rating: Bond Quality: If Unsuccessful, Detection Indicator: Temp Survey: N Remedial Cement Required: N Hrs Prior to Log: (hr) How Determined: Printed 9/4/2013 3:56:54PM Printed 9/4/2013 4:02:12PM North America -ALASKA - BP Page 1 of 3 Cementing Report Common Wall -Nam -e.-2-6-8/01 Report no.: 3D Report date: 8/22/2013 Project: Prudhoe Bay Site: PB Z Pad Spud Date/Time: 7/27/2013 Event Type: COM- ONSHORE (CON) Start Date: 8/21/2013 End Date: 8/26/2013 AFE No.: Contractor: PARKER DRILLING CO. Rig Name/No.: PARKER 273 Rig Release: 8/26/2013 X3 -013H1 -C: DRILL (3,080,009.00 ) UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) General Information Job type: Primary Cement job start date/time: 8/22/2013 4:30PM Job end date/time: 8/22/2013 5:30PM Cement Company: SCHLUMBERGER Cementer: RIANNE CAMPBELL Cemented String: PRODUCTION LINER 1 String Size: 4.500 (in) String Set TMD: 10,210.00 (usft) Hole Size: 6.125 (in) Pipe Movement Pipe Movement: RECIPROCATING Rotating Time (Start -End): RPM: Rotating Torque (init/avg/max): (ft-Ibf) Reciprocating Time (Start -End): 4:30:00 pm 5:10:00 pm Recip Drag Up/Down: 180.0 - 150.0 (kip) SPM: 1.00 (spm) Stroke Length: 5.00 (usft) Fluid Name: SPACER Fluids (1 of 2) Slurry Type: SPACER Purpose: SPACER Class: Description: SPACER WEIGHTED Density: 10.00 (ppg) Yield: Mix Water Ratio: Excess: Mix Method: BATCH Sacks Used: Water Volume: Excess Slurry Volume: 0.0 (bbl) Density Measured by: Other Volume: Total Vol in Well: 0.0 (bbl) Slurry Volume: 30.0 (bbl) Excess Measured From: EST. GAUGE HOLE Mud Type: Density: PV: YP: Viscosity: Geis 10 Sec: Gels 10 Min: Fluid Name: OLD MUD Fluids (2 of 2) Slurry Type: CEMENT Purpose: PRIMARY Class: G -CLASS Description: TAIL SLURRY Density: 15.80 (ppg) Yield: 1.5400 (ft'/sk) Mix Water Ratio: 6.484 (gal/sk94) Excess: 40.00(%) Mix Method: BATCH Sacks Used: 95.00 (941b sacks) Water Volume: 14.7 (bbl) Excess Slurry Volume: 10.4 (bbl) Density Measured by: DENSOMETER Other Volume: 0.0 (bbl) Total Vol in Well: 16.5 (bbl) Slurry Volume: 26.1 (bbl) Excess Measured From: EST. GAUGE HOLE Mud Type: SW/WBM Density: 13.00 (ppg) PV: 4.00 (cp) YP: 13.000 (Ibf/100ft2) Viscosity: 37.00 (s/qt) Gels 10 Sec: 8.000 (Ibf/100W) Gels 10 Min: 10.000 (Ibf/100W) Printed 9/4/2013 4:02:12PM Printed 9/4/2013 4:02:12PM North America - ALASKA - BP Page 2 of 3 Cementing Report Common Well Name: Z-68 / 01 --- Report no.: 3D Report date: 8/22/2013 Project: Prudhoe Bay Site: PB Z Pad Spud Date/Time: 7/27/2013 Event Type: COM- ONSHORE (CON) Start Date: 8/21/2013 End Date: 8/26/2013 AFE No.: Contractor: PARKER DRILLING CO. Rig Name/No.: PARKER 273 Rig Release: 8/26/2013 X3 -013H1 -C: DRILL (3,080,009.00 ) UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Additives Name Type Amount Units Concentration Unit D047 ANTIFOAM AGENT GALS 0.200 GAL/SX D065 DISPERSANT % 0.750 % BWOC D60OG GASBLOK GALS 2.000 GAL/SX D167 FLUID LOSS % 0.300 % BWOC D198 RETARDERAID % 0.100 %BWOC D178 SILICA % 35.000 1 % BWOC Stages Stage Stage Type Est. Top Est. Bottom Mud Circ. Mud Circ. Top Bottom Plug Pressure essure Returns Circulate Cmt Vol to Total Annular no. (usft) (usft) Rate Press. Plug Plug Bumped Bumped Prior Surfac(gpm) (psi) 4Held(Held min)1 (hr) (bbl) bbl After PRIMARY CEMENT 9,525.00 10,210.00 254.0 800.00Y Y 7aos.00 FULL 4.00 10.0 0.0 Pumping Schedule Fluid pumped Volume Avg. Max Disp. Slurry Top Slurry Base Start Mix Cmt Start Slurry Pumping end Start Disp Foam Gas Type Gas Vol BH circ. Bh static Pumped Disp. Rate TMD TMD Pmp date/time job Used temp. temp. (bbl) Rate (bbl/min) (usft) (usft) (scf) (bbl/min) OLD MUD - TAIL SLURRY 26.0 6.00 6.00 9,525.00 10,210.00 16:11 16:39 8/22/2013 17:10 16:55 N 208.00 236.00 Tests Casing Test Shoe Test Liner Top Test Test Pressure: 3,500.00 (psi) FIT/LOT: (ppg) Liner Overlap: 178.00 (usft) Time: 30 (min) Tool: N Positive Test: 16.40 (ppg) Positive Test Tool: N Cement Found between Shoe and Collar: N Open Hole Length: (usft) Negative Test: (ppg) Negative Test Tool: N Hours Before Start: (hr) Time before test: 21.00 (hr) Cmt Found on Tool: N Log/Survey Evaluation Interpretation Summary CBL Run: N Cement Top: 9,525.00 (usft) Under Pressure: (psi) How Determined: TOP OF LINER Bond Quality: TOC Sufficient: Y CET Run: N Job Rating: FAIR Bond Quality: If Unsuccessful, Detection Indicator: Temp Survey: N Remedial Cement Required: N Hrs Prior to Log: (hr) How Determined: 0 Printed 9/4/2013 4:02:12PM North America -ALASKA - BP Page 3 of 3 Cementing Report Common Well Name: Z-68 / 01 Report no.. 3D Report date: 8/22/2013 Project: Prudhoe Bay Site: PB Z Pad Spud Date/Time: 7/27/2013 Event Type: COM- ONSHORE (CON) Start Date: 8/21/2013 End Date: 8/26/2013 AFE No.: Contractor: PARKER DRILLING CO. Rig Name/No.: PARKER 273 Rig Release: 8/26/2013 X3 -013H1 -C: DRILL (3,080,009.00 ) UWI: 500292349300 Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Remarks BUMPED PLUG AND FLOATS HELD BUMPED PLUG ON CORRECT BBALS AWAY, THOUGH EARLY ON STROKES 993 (107% PUMP EFFICIENCY) DUE TO CHARGE PUMP OUTRUNNING MUD PUMP CEMENT BACK IN RETURNS OVER COURSE OF 25 BBLS. 10 BBLS GOOD CEMENT BACK TO SURFACE. Printed 9/4/2013 4:02:12PM Please return a signed copy to: BP PDC LR2-1 900 E Benson Blvd Anchorage AK 99508 X i42 ZF- Please return a signed copy to: Wireline 2525 Gambell St, Suite 400 Anchorage AK 99503 2.723-6 t �j DATE: 21 -Jan -14 Stephanie Pacillo TRANSM 6588 Data Manager`�Makana K Bender DATA LOGGED Schlumberger Oilfield Services Natural Resources Technician 11 M K BENDER WIRELINE Alaska Oil cox Gas Conservation Commission 2525 Gambell St, Ste. 400 r — Ave, Suite 100alcllCrac'E. .4Z.-`9501 Anchorage, AK 99503 2: Office: (907) 273-1770 Eel NAME 12mrommm, 1:6 1-2-16 CB00-00050 X RST 22 -Dec -13 1 1 CD 11-08 CB00-0051 X RST 28 -Dec -13 1 1 CD Z-67 CRR3-00003 X RST BORAX & PLUG SETTING 30 -Oct -13 1 1 CD W-30 C4W7-00099 X RST 11 -Dec -13 1 1 CD 15-07C CLVY-00039 X RST 12 -Jan -14 1 1 CD C -07A CTEK-00007 X MCNL 29 -Dec -13 1 1 CD C -07A CTEK-00006 X MEMORY PPROF 27 -Dec -13 1 1 CD Z-68 C4W7-00084 X USIT 23 -Aug -13 1 1 CD Please return a signed copy to: BP PDC LR2-1 900 E Benson Blvd Anchorage AK 99508 X i42 ZF- Please return a signed copy to: Wireline 2525 Gambell St, Suite 400 Anchorage AK 99503 PTO 2i3-093 Ferguson, Victoria L (DOA) From: Ferguson, Victoria L (DOA) Sent: Wednesday, January 22, 2014 3:22 PM To: Roby, David S (DOA) Subject: PBU Z-68 (PTD 213-093) Dave, PBU Z-68 was drilled last year. The entire well was cased but was never perforated or completed because BP determined it was wet. Their plans are to sidetrack later this year. We never reviewed the logs to see if we agree with their interpretation. Steve D. and I looked at the logs today and agree it looks wet with little pay. Thought you should review and determine if any reserves are being left behind. The logs for Z-68 are in digital file T23300. BP is preparing a 10-407 with the well in suspended status. We should probably put a note in the file. Thanx, Victoria Victoria Ferguson Senior Petroleum Engineer State of Alaska Oil & Gas Conservation Commission 333 W. 7th Ave, Ste 100 Anchorage, AK 99501 Work: (907)793-1247 victoria.ferguson(c)alaska.gov gyroldata Gyrodata Incorporated 23000 Northwest Lake Dr. Houston, TX 77095 (281) 213-6300 Fax: (281) 213-6301 SURVEY REPORT BP Exploration Drillsite Z -Pad, Well Z-68,4 V2" HES Prudehoe Bay, N. Slope Borough Alaska AK0913GCM209 13 September, 2013 Serving the Worldwide Energy Industry with Precision Survey Instrumentation RECEIVED SEP 2 5 AOGCC ZN-L_ 09 gy1oldata Gyrodata Incorporated 23000 Northwest Lake Dr. Houston. TX 77095 (281) 213-6300 Fax: (281) 213-6301 September 18, 2013 State of Alaska - AOGCC Attn: Makana Bender 333 W. 7th Ave, Suite 100 Anchorage, Alaska 99501 Re: Drillsite Z -Pad, Well Z-68,4 %" HES Prudehoe Bay, N. Slope Borough Alaska Enclosed, please find two (2) copies, and one (1) disk of the completed survey for the above referenced well. We would like to take this opportunity to thank you for using Gyrodata, and we look forward to serving you in the future. Sincerely, Rob Shoup North American Regional Manager RS:fec Serving the Worldwide Energy Industry with Precision Survey Instrumentation A Gyrodata Directional Survey Definitive for BP EXPLORATION (ALASKA) Lease: PRUDHOE BAY UNIT - WOA Well: Z -PAD WELL: Z-68,4.5" HES Location: WELLHEAD, N SLOPE BOROUGH Job Number: AK0913GCM209 Run Date: 13 Sep 2013 Report Generated: 17 Sep 2013 11:50 Surveyor: Christopher Prince Calculation Method: MINIMUM CURVATURE Survey surface coordinates obtained from: Company Man Survey Latitude: 70.297664 deg. N Longitude: 149.188800 deg. W Azimuth Correction: Gyro: Bearings are Relative to True North Depth Reference: Rotary Table Air Gap (RKB to Ground / RKB to MSL): 102,82 Ground Elevation (Ground to MSL / MSL to Mudline): 59.71 Vertical Section Calculated from Well Head Location Closure Calculated from Well Head Location Horizontal Coordinates Calculated from Well Head Location A Gyrodata Directional Survey BP EXPLORATION (ALASKA) Lease: PRUDHOE BAY UNIT - WOA Well: Z -PAD WELL: Z-68,4,5" HES Location: WELLHEAD, N SLOPE BOROUGH Job Number: AK0913GCM209 MEASURED INCL AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg. deg, deg./ feet feet deg. feet 100 ft. 0.00 0.00 0.00 0.00 0.00 0.0 0.0 0.00 N 0.00 E ------------- ----------------------- 0-9894,00 FT RATE GYROSCOPIC CONTINUOUS MULTISHOT SURVEY RUN INSIDE 4 1/2" TUBING ALL MEASURED DEPTHS AND COORDINATES REFERENCED TO ORIGINAL R.K.B. R.K,B. ELEVATION 102.82 FT MSL; FLANGE ELEVATION 59.71 FT MSL; SWAB to FLANGE 6.0 FT; SWAB to GYRO SENSOR 7.12 FT; ZERO TOOL ON SWAB AT 30.0 FT -------------------------------------- 100.00 0.18 281.35 0.18 100.00 0.2 281.3 0.03 N 0.15 W 200,00 0.11 279.00 0.07 200.00 0.4 280.8 0.08 N 0.40 W 300.00 1.23 18.10 1.25 299.99 1.1 351.6 1,11 N 0.16 W 400.00 1.62 16.90 500.00 2.54 22.10 0.39 399.96 3.5 9.5 3.48 N 0.58 E 600.00 2.93 25.25 0.94 0.42 499.89 7:1 14.8 6.89 N 1.82 E 700.00 3.38 38.66 0.86 599.78 699.63 11.9 18.4 11.25 N 3.75 E 800.00 3.32 43.19 0.27 799.46 17.2 22.8 22.8 27.4 15.86 N 6.68 E 20.28 N 10.50 E 900.00 3.05 60.97 1000,00 3.12 1.02 899.31 27.9 32.0 23.68 N 14.81 E 94.85 1100.00 4.48 123.53 1.80 999.17 31.7 38.7 24.74 N 19.85 E 1200.00 6.14 142.23 2.30 2.38 1098.96 1198.53 34.2 49.1 22.36 N 25.82 E 1300.00 9.80 160.17 4.38 1297.56 36.1 38.7 63.7 84.5 15.97 N 3.72 N 32,35 E 38.52 E 1325.00 10.43 164.13 3.74 1322.17 39.9 90.7 0.46 S 39.86 E A Gyrodata Directional Survey BP EXPLORATION (ALASKA) Lease: PRUDHOE BAY UNIT - WOA Location: WELLHEAD, N SLOPE BOROUGH Job Number: AK0913GCM209 MEASURED DEPTH feet INCL AZIMUTH deg. deg. Well: Z -PAD WELL: Z-68, 4.5" HES DOGLEG VERTICAL CLOSURE SEVERITY DEPTH DIST. AZIMUTH deg./ feet feet deg. 100 ft. HORIZONTAL COORDINATES feet 1350.00 11.23 169.62 5.22 1346.73 41.2 97.0 5.03 S 40.92 E 1375.00 12.00 173.56 4.42 1371.22 42.8 103.5 10.00 S 41.65 E 1400.00 12.49 175.15 2.38 1395.65 44.9 109.9 15.28 S 42.17 E 1425.00 13.61 177.55 4.98 1420.00 47.4 116.2 20.91 S 42.52 E 1450.00 14.73 180.00 5.08 1444.24 50.5 122.4 27.03 S 42.65 E 1475.00 15.47 181.22 3.22 1468.38 54.2 128.2 33.54 S 42.58 E 1500.00 16.15 182.42 3.02 1492.43 58.5 133.6 40.35 S 42.36 E 1525.00 16.66 182.92 2.12 1516.41 63.4 138.4 47.40 S 42.03 E 1550.00 17.01 183.21 1.44 1540.34 68.7 142.7 54.63 S 41.64 E 1575.00 17.37 183.70 1.55 1564.23 74.4 146.4 62.01 S 41.20 E 1600.00 17.66 183.74 1.16 1588.07 80.6 149.6 69.52 S 40.71 E 1625.00 18.48 184.24 3.34 1611.83 87.1 152.5 77.25 S 40.17 E 1650,00 18.81 185.00 1.64 1635.52 93.9 155.1 85.22 S 39.52 E 1675,00 19.19 185.65 1.74 1659.16 101.1 157.4 93.32 S 38.77 E 1700.00 19.44 186,40 1.41 1682.75 108.4 159.5 101.54 S 37.90 E 1725.00 19.45 186.37 0.06 1706.33 115.9 161.4 109.82 S 36.98 E 1750.00 19.61 186.50 0.66 1729.89 123.5 163.0 118.12 S 36.04 E 1775.00 19.54 186,57 0.30 1753.44 131.2 164.5 126.44 S 35.09 E 1800.00 19.38 186.57 0.64 1777.02 139.0 165.8 134.72 S 34.13 E 1825.00 19.33 186.62 0.21 1800.60 146.7 166.9 142.95 S 33.18 E 1850.00 19.38 186.40 0.35 1824.19 154.6 168.0 151.18 S 32.24 E 1875.00 19.71 185.80 1.54 1847.75 162.5 168.9 159.50 S 31.35 E A Gyrodata Directional Survey BP EXPLORATION (ALASKA) Lease: PRUDHOE BAY UNIT - WOA Well: Z -PAD WELL: Z-68, 4.5" HES Location: WELLHEAD, N SLOPE BOROUGH Job Number: AK0913GCM209 MEASURED INCL AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg, deg. deg./ feet feet deg. feet 100 ft. 1900.00 1925.00 20.22 20.85 184.11 182.95 3.08 1871.25 170.8 169.7 168.00 S 30.62 E 3.00 1894.66 179.3 170.3 176.75 S 30.08 E 1950.00 1975.00 21.03 21.30 181.86 1.72 1918.01 188.0 170.9 185.68 S 29.70 E 2000.00 21,30 181.24 179.20 1.40 2.96 1941.32 196.9 171.4 194.70 S 29.46 E 2025.00 21.51 178.70 1.11 1964.61 205.9 171.8 203.78 S 29.43 E 2050.00 21.45 178.18 0.80 1987.89 2011.15 214.9 172.1 212.90 S 29.59 E 224.1 172.3 222.05 S 29.84 E 2075.00 2100.00 21.56 21.48 176.34 2.73 2034.41 233.2 172.5 231.21 S 30.28 E 2125.00 21.60 174.57 173.67 2.62 2057.67 242.3 172.6 240.35 S 31.01 E 2150.00 21.55 173.27 1.41 0.62 2080.92 251.5 17217 249.48 S 31.95 E 2175.00 21.70 172,86 0.85 2104.17 2.60.7 172.7 258.61 S 32.99 E 2127.41 269.9 172.7 267.76 S 34.11 E 2200.00 2225.00 21.66 21.80 172.70 0.29 2150.64 279.2 172.7 276.92 S 35.27 E 2250.00 21.83 172.18 171.88 0.95 0.46 2173.87 288.4 172.7 286.09 S 36.48 E 2275.00 22.00 171.50 0.89 2197.08 2220.27 297.7 172.7 295.29 S 37.77 E 2300.00 22.02 171.53 0.09 2243.45 307.0 316.4 172.7 172.6 304.53 S 39.12 E 313.79 S 40.50 E 2325.00 2350.00 22.16 22.21 171.63 0.58 2266.61 325.8 172.6 323.09 S 41.88 E 2375.00 22.68 171.78 173.08 0.30 2.73 2289.76 335.2 172.6 332.44 S 43.24 E 2400.00 22.68 173.49 0.63 2312.87 2335.94 344.8 172.6 341.90 S 44.50 E 2425.00 22.66 173.77 0.44 2359.00 354.4 364.1 172.6 351.47 S 45.62 E 172.6 361.05 S 46.69 E A Gyrodata Directional Survey By EXPLORATION (ALASKA) Lease: PRUDHOE BAY UNIT - WOA Location: WELLHEAD, N SLOPE BOROUGH Job Number: AK0913GCM209 MEASURED DEPTH feet INCL AZIMUTH deg. deg. Well: Z -PAD WELL: Z-68,4.5" HES DOGLEG VERTICAL CLOSURE SEVERITY DEPTH DIST. AZIMUTH deg./ feet feet deg. 100 ft. HORIZONTAL COORDINATES feet 2450.00 22.32 174.55 1.81 2382.10 373.6 172.7 370.56 S 47.67 E 2475.00 22.13 175.06 1.08 2405.25 383.1 172.7 379.98 S 48.52 E 2500.00 21.91 175.78 1.39 2428.42 392.4 172.8 389.32 S 49.27 E 2525.00 21.85 175.97 0.37 2451.62 401.7 172,9 398.61 S 49.94 E 2550,00 21.68 177.12 1.84 2474.84 411.0 172.9 407.87 S 50.50 E 2575.00 21.52 177.48 0.83 2498,08 420.2 173.0 417.06 S 50.94 E 2600.00 21.41 177.77 0.61 2521.35 429.3 173.1 426.20 S 51.31 E 2625.00 21.00 178.12 1.72 2544.66 438.3 173.2 435.24 S 51.64 E 2650.00 20.43 179,14 2.70 2568.04 447.1 173.3 444.08 S 51.85 E 2675.00 19.89 179.75 2;32 2591.51 455.7 173.5 452.69 S 51.94 E 2700.00 19.63 180.04 1.11 2615.04 464.1 173.6 461.14 S 51.95 E 2725.00 19.59 180.03 0.16 2638.59 472.4 173.7 469.53 S 51.95 E 2750.00 19.32 180.02 1.08 2662.16 480.7 173.8 477.86 S 51.94 E 2775.00 19.32 179.67 0.46 2685.75 488.9 173.9 486.13 S 51.96 E 2800.00 19.20 179.77 0.50 2709.35 497.1 174.0 494.38 S 52.01 E 2825.00 19.21 179.58 0.25 2732.96 505.3 174.1 502.60 S 52.05 E 2850.00 19.03 179.65 0.73 2756.58 513.4 174.2 510.79 S 52.11 E 2875.00 19.00 179.25 0.53 2780.22 521.6 174.3 518.93 S 52.19 E 2900.00 18.76 179.23 0.96 2803.87 529.6 174.3 527.02 S 52.29 E 2925.00 18.71 179.06 0.30 2827.55 537.6 174.4 535.05 S 52.41 E 2950.00 18.54 179.07 0.68 2851.24 545.6 174.5 543.04 S 52.54 E A Gyrodata Directional Survey BP EXPLORATION (ALASKA) Lease: PRUDHOE BAY UNIT - WOA Location: WELLHEAD, N SLOPE BOROUGH Job Number: AK0913GCM209 MEASURED DEPTH feet INCL AZIMUTH deg. deg. Well: Z -PAD WELL: Z-68,4.5" HES DOGLEG VERTICAL CLOSURE SEVERITY DEPTH DIST. AZIMUTH deg./ feet feet deg. 100 ft. HORIZONTAL COORDINATES feet 2975.00 18.48 178.70 0.53 2874.95 553.5 174.5 550.97 S 52.70 E 3000.00 18.34 178.64 0.57 2898.67 561.4 174.6 558.86 S 52.88 E 3025.00 18.32 178.43 0.28 2922.40 569.2 174.6 566.72 S 53.08 E 3050.00 18.40 178.34 0.34 2946.13 577.1 174.7 574.59 S 53.30 E 3075.00 18.49 177.85 0.72 2969.84 585.0 174.7 582.50 S 53.57 E 3100.00 18.95 177.01 2.13 2993.52 593.0 174.8 590.52 S 53.93 E 3125.00 19.22 176.40 1.34 3017.14 601.1 174.8 598.68 S 54.40 E 3150.00 19.36 176.56 0.60 3040.74 609.4 174.8 606.92 S 54.90 E 3175.00 19.40 176.34 0.33 3064.32 617.7 174.9 615.20 S 55.42 E 3200.00 19.50 176.37 0.40 3087.90 626.0 174.9 623.51 S 55.95 E 3225.00 19.37 176.37 0.52 3111.47 634.3 174.9 631.81 S 56.47 E 3250.00 19.32 176.91 0.74 3135.06 642.6 174.9 640.08 S 56.96 E 3275.00 19.27 176.83 0.23 3158.66 650.9 174.9 648.32 S 57.41 E 3300.00 19.29 177.92 1,44 3182.26 659.1 175.0 656.57 S 57.79 E 3325.00 19.26 178.22 0.41 3205.85 667.3 175.0 664.82 S 58.07 E 3350.00 19.37 177.53 1.01 3229.45 675.6 175.0 673.08 S 58.37 E 3375.00 19.42 174.29 4.31 3253.03 683.9 175.1 681.36 S 58.96 E 3400.00 19.52 172.30 2.68 3276.60 692.2 175.0 689.63 S 59.94 E 3425.00 19.64 169.79 3.40 3300.15 700.6 175.0 697.91 S 61.24 E 3450.00 19.47 166.24 4.80 3323.71 708.9 174.9 706.09 S 62.98 E 3475.00 19.63 165.70 0.97 3347.27 717.2 174.8 714.21 S 65.01 E 3500.00 19.63 165.03 0.90 3370.82 725.4 174.7 722.33 S 67.13 E A Gyrodata Directional Survey BP EXPLORATION (ALASKA) Lease: PRUDHOE BAY UNIT - WOA Location: WELLHEAD, N SLOPE BOROUGH Job Number: AK0913GCM209 MEASURED DEPTH feet INCL AZIMUTH deg. deg. Well: Z -PAD WELL: Z-68,4.5" HES DOGLEG VERTICAL CLOSURE SEVERITY DEPTH DIST. AZIMUTH deg./ feet feet deg. 100 ft. 69.49 E HORIZONTAL COORDINATES feet 3525.00 19.36 161.98 4.21 3394.39 733.6 174.6 730.33 S 69.49 E 3550.00 19.08 157.03 6.61 3417.99 741.6 174.4 738.03 S 72.37 E 3575.00 18.89 155.37 2.29 3441.63 749.3 174.2 745.47 S 75.65 E 3600.00 18.96 154.33 1.38 3465.28 757.0 174.0 752.81 S 79.10 E 3625.00 18.66 150.50 5.08 3488.95 764.5 173.8 759.95 S 82.83 E 3650.00 18.35 146.91 4.72 3512.66 771.6 173.5 766.73 S 86.95 E 3675.00 18.29 144.49 3.05 3536.39 778.6 173.3 773.22 S 91.37 E 3700.00 18.09 143.03 1.99 3560.14 785.4 173.0 779.52 S 95.99 E 3725.00 17.53 138.73 5.72 3583.94 791.9 172.7 785.45 S 100.80 E 3750.00 17.15 134.90 4.81 3607.81 797.9 172.4 790.88 S 105.90 E 3775.00 17.10 134.33 0.70 3631.70 803.8 172.1 796.05 S 111.14 E 3800.00 17.43 132.85 2.20 3655.57 809.6 171.7 801.16 S 116.51 E 3825.00 18.31 128,86 6.03 3679.37 815.4 171.4 806.18 S 122.32 E 3850.00 19.14 125.73 5.21 3703.05 821.2 171.0 811.03 S 128.70 E 3875.00 19.55 124.48 2.33 3726.63 827.0 170.6 815.79 S 135.48 E 3900.00 19.83 123.45 1.78 3750.17 832.8 170.2 820.50 S 142.46 E 3925.00 20.69 121.54 4.34 3773.63 838.6 169.7 825.15 S 149.76 E 3950.00 21.09 120.11 2.59 3796.98 844.5 169.3 829.71 S 157.42 E 3975.00 21.30 119.53 1.19 3820.29 850.4 168.8 834.21 S 165.26 E 4000.00 21.60 117.20 3.61 3843.56 856.3 168.3 838.55 S 173.30 E 4025.00 22.70 114.36 6.14 3866.72 862.0 167.8 842.64 S 181.79 E 4050.00 23.28 113.35 2.81 3889.73 867.8 167.3 846.59 S 190.72 E A Gyrodata Directional Survey BP EXPLORATION (ALASKA) Lease: PRUDHOE BAY UNIT - WOA Location: WELLHEAD, N SLOPE BOROUGH Job Number: AK0913GCM209 MEASURED DEPTH feet INCL AZIMUTH deg. deg. Well: Z -PAD WELL: Z-68,4.5" HES DOGLEG VERTICAL CLOSURE SEVERITY DEPTH DIST. AZIMUTH deg./ feet feet deg. 100 ft. HORIZONTAL COORDINATES feet 4075.00 23.40 113.09 0.63 3912.68 873.7 166.8 850.50 S 199.82 E 4100.00 24.36 110.95 5.17 3935.54 879.5 166.2 854.29 S 209.21 E 4125.00 25.23 109.82 3.96 3958.24 885.5 165.7 857.94 S 219.03 E 4150.00 25.53 109.78 1.20 3980.83 891.5 165.1 861.57 S 229.12 E 4175.00 25.79 109.22 1.42 4003.36 897.7 164.5 865.18 S 239.32 E 4200.00 26.67 107.09 5.15 4025.79 903.8 164.0 868.62 S 249.82 E 4225.00 27.67 104.33 6.43 4048.03 909.9 163.3 871.70 S 260.81 E 4250.00 28.02 103.44 2.17 4070.13 915.9 162,7 874.51 S 272.14 E 4275.00 28.36 102.96 1.63 4092.17 921.9 162.1 877.20 S 283.64 E 4300.00 29.16 100.29 6.05 4114.09 927.9 161.4 879.62 S 295.42 E 4325.00 29.88 98.33 4.82 4135.84 933.7 160.8 881.61 S 307.58 E 4350.00 30.05 97.76 1.33 4157.50 939.5 160.1 883.36 S 319.94 E 4375.00 30.27 96.48 2.72 4179.11 945.3 159.4 884.92 S 332.40 E 4400.00 30.56 92.86 7.42 4200.68 950.8 158.7 885.94 S 345.01 E 4425.00 30.65 91.10 3.60 4222.19 955.8 158.0 886.38 S 357.73 E 4450.00 30.85 90.52 1.43 4243.68 960.9 157.3 886.56 S 370.51 E 4475.00 30.77 89.04 3.05 4265.15 965.8 156.6 886.52 S 383.32 E 4500.00 30.89 86.76 4.70 4286.62 970.6 155.9 886.05 S 396.12 E 4525.00 31.03 85.84 1.97 4308.06 975.1 155.2 885.22 S 408.95 E 4550.00 31.10 85.27 1.21 4329.47 979.7. 154.5 884.22 S 421.81 E 4575.00 31.20 84.49 1.66 4350.87 9843 153.8 883.06 S 434.69 E A Gyrodata Directional Survey BP EXPLORATION (ALASKA) Lease: PRUDHOE BAY UNIT - WOA Well: Z -PAD WELL: Z-68, 4.5" HES Location: WELLHEAD, N SLOPE BOROUGH Job Number: AK0913GCM209 MEASURED INCL AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg. deg, deg./ feet feet deg. feet 100 ft. 4600.00 31.23 84.20 0.61 4372.25 988.9 153.1 881.79 S 447.59 E 4625.00 31.41 83.92 0.93 4393.61 993.6 152.4 880.44 S 460.51 E 4650.00 31.21 83.62 1.01 4414.96 998.4 151.7 879.03 S 473.43 E 4675.00 29.73 82.72 6.19 4436.51 1003.1 151.0 877.53 S 486.01 E 4700.00 29.22 82.29 2.21 4458.28 1007.7 150.4 875.92 S 498.21 E 4725.00 29.06 82.08 0.76 4480.11 1012.3 149.7 874.27 S 510.27 E 4750.00 28.95 82.12 0.45 4501.98 1017.0 149.1 872.60 S 522.28 E 4775.00 28.65 82.40 1,32 4523.88 1021.8 148.5 870.98 S 534.21 E 4800.00 28.29 82.72 1.56 4545.86 1026.7 147,9 869.43 S 546.03 E 4825.00 28.31 83.24 0.99 4567.87 1031.8 147.3 867.99 S 557.79 E 4850.00 28.45 84.32 2.13 4589.87 1037.1 146.7 866.70 S 569.60 E 4875.00 28.77 86.44 4.26 4611.82 1042.9 146.1 865.74 S 581.53 E 4900.00 28.90 86.70 0.72 4633.72 1049.1 145.5 865.01 S 593.57 E 4925.00 29.12 86.82 0.91 4655.58 1055.4 145.0 864.33 S 605.67 E 4950.00 29.29 86.77 0.69 4677.40 1061.9 144,4 863.65 S 617.85 E 4975.00 29.16 86.93 0.61 4699.22 1068.5 143.9 862.98 S 630.04 E 5000.00 29.35 86.81 0.80 4721.03 1075.2 143.3 862.31 S 642.24 E 5025.00 29.15 86.67 0.85 4742.84 1082.0 142.8 861.61 S 654.44 E 5050.00 28.92 86.58 0.94 4764.70 1088.8 142.3 860.90 S 666.55 E 5075.00 28.18 86.44 2.97 4786.66 1095.5 141.7 860.17 S 678.47 E 5100.00 28.14 86.55 0.26 4808.70 1102.3 141.2 859.45 S 690.25 E 5125.00 27.90 86.32 1.05 4830.77 1109.1 140.7 858.72 S 701.97 E A Gyrodata Directional Survey BP EXPLORATION (ALASKA) Lease: PRUDHOE BAY UNIT - WOA Location: WELLHEAD, N SLOPE BOROUGH Job Number: AK0913GCM209 MEASURED DEPTH feet INCL AZIMUTH deg. deg. Well: Z -PAD WELL: Z-68,4.511 HES DOGLEG VERTICAL CLOSURE SEVERITY DEPTH DIST. AZIMUTH deg./ feet feet deg. 100 ft. HORIZONTAL COORDINATES feet 5150.00 26.72 86.26 4.72 4852.98 1115.8 140.3 857.98 S 713.42 E 5175.00 26.52 86.30 0.80 4875.33 1122.5 139.8 857.25 S 724.60 E 5200.00 26.47 86.49 0.39 4897.71 1129.1 139.3 856.55 S 735.73 E 5225.00 26.54 87.17 1.25 4920.08 1136.0 138.9 855.93 S 746.87 E 5250.00 26.45 88.43 2.28 4942.46 1143.0 138.5 855.51 S 758.01 E 5275.00 26.53 88.40 0.32 4964.83 1150.2 138.0 855.20 S 769.16 E 5300.00 26.45 88.49 0.36 4987.21 1157.5 137.6 854.89 S 780.31 E 5325.00 26,37 88.10 0.76 5009.60 1164.7 137.2 854.56 S 791.42 E 5350.00 26.42 87.92 0.38 5031.99 1172.0 136.8 854.18 S 802.53 E 5375.00 26.47 87.43 0.90 5054.37 1179.4 136.4 853.73 S 813.65 E 5400.00 26.79 87.34 1.29 5076.72 1186.7" 136.0 853.22 S 824.85 E 5425.00 27.40 86.74 2.67 5098.98 1194.2 135.6 852.63 S 836.22 E 5450.00 28.40 86.41 4.05 5121.07 1202.0 135.1 851.93 S 847.89 E 5475.00 5500.00 28.54 28.73 86.52 0.60 5143.05 1209.9 134.7 851.19 S 859.79 E 5525.00 28.66 86.29 85.99 0.88 0.64 5164.99 1217.9 134.3 850.44 S 871.75 E 5550.00 28.79 85.93 0.53 5186.92 1225.9 133.9 849.63 S 883.72 E 5208.84 1234.0 133.5 848.79 S 895.71 E 5575.00 5600.00 28.80 28.68 85.82 0.22 5230.75 1242.1 133.0 847.92 S 907.72 E 5625.00 28.78 85.56 85.48 0.69 0.43 5252.67 1250.3 132.6 847.02 S 919.71 E 5650.00 28.83 85.42 0.23 5274.60 1258.5 132.2 846.08 S 931.69 E 5675.00 28.72 84.25 2.30 5296.50 1266.8 131.8 845.12 S 943.69 E 5318.42 1275.0 131.5 844.04 S 955.68 E A Gyrodata Directional Survey BP EXPLORATION (ALASKA) Lease: PRUDHOE BAY UNIT - WOA Location: WELLHEAD, N SLOPE BOROUGH Job Number: AK0913GCM209 MEASURED DEPTH feet INCL AZIMUTH deg. deg. Well: Z -PAD WELL: Z-68,4.5" HES DOGLEG VERTICAL CLOSURE SEVERITY DEPTH DIST. AZIMUTH deg./ feet feet deg. 100 ft. HORIZONTAL COORDINATES feet 5700.00 28.79 84.26 0.28 5340.33 1283.2 131.1 842.84 S 967.64 E 5725.00 28.70 83.94 0.71 5362.25 1291.5 130.7 841.60 S 979.60 E 5750.00 28.70 83.80 0.27 5384.18 1299.7 130.3 840.32 S 991.54 E 5775.00 28.38 83.67 1.30 5406.14 1308.0 129.9 839.01 S 1003.41 E 5800.00 28.43 83.42 0.52 5428.13 1316.2 129.5 837.68 S 1015.23 E 5825.00 28.26 83.22 0.78 5450.14 1324.4 129.2 836.30 S 1027.02 E 5850.00 28.11 83.12 0.63 5472.17 1332.7 128.8 834.89 S 1038.74 E 5875.00 28.19 83.14 0.32 5494.21 1340.9 128.4 833.48 S 1050.45 E 5900.00 27.89 84.12 2.20 5516.28 1349.3 128.1 832.18 S 1062.13 E 5925.00 27.89 84.78 1.23 5538.38 1357,8 127.7 831,05 S 1073.77 E 5950.00 27.72 84.86 0.70 5560.49 1366.4 127.4 829.99 S 1085.39 E 5975.00 27,48 84.46 1.21 5582.64 1374.9 127.1 828.92 S 1096.92 E 6000.00 27.36 84.44 0.48 5604.84 1383.4 126.8 827.80 S 1108.38 E 6025.00 27.06 84.12 1.34 5627.07 1391.8 126.4 826.66 S 1119.75 E 6050.00 27.23 84.09 0.68 5649.32 1400.3 126.1 825.49 S 1131.10 E 6075.00 27.43 84.17 0.81 5671.53 1408.8 125.8 824.32 S 1142.51 E 6100.00 28.22 83.90 3.20 5693.63 1417.6 125.5 823.10 S 1154.12 E 6125.00 28.68 84.03 1.86 5715.62 1426.5 125.2 821.85 S 1165.96 E 6150.00 28.82 83.96 0.58 5737.53 1435.6 124.9 820.59 S 1177.92 E 6175.00 28.90 83.82 0.42 5759.43 1444.7 124.5 819.31 S 1189.92 E 6200.00 28.71 84.05 0.88 5781.34 1453.9 124.2 818.04 S 1201.90 E A Gyrodata Directional Survey BP EXPLORATION (ALASKA) Lease: PRUDHOE BAY UNIT - WOA Location: WELLHEAD, N SLOPE BOROUGH Job Number: AK0913GCM209 MEASURED DEPTH feet INCL AZIMUTH deg. deg Well: Z -PAD WELL: Z-68,4,5" HES DOGLEG VERTICAL CLOSURE SEVERITY DEPTH DIST. AZIMUTH deg./ feet feet deg. 100 ft. HORIZONTAL COORDINATES feet 6225.00 6250.00 28.65 28.67 83.96 84.22 0.30 5803.27 1463.1 123.9 816.78 S 1213.83 E 6275.00 28,61 85.14 0.51 1.78 5825.21 1472.3 123.6 815.55 S 1225.76 E 6300.00 28.76 86.53 2.74 5847.15 1481.6 123.3 814.44 S 1237.69 E 5869.08 1491.2 123.1 813.57 S 1249.66 E 6325.00 6350.00 28.66 28.38 86.90 0.82 5891.00 1500.8 122.8 812.88 S 1261.65 E 6375.00 28.45 86.96 87.06 1.13 5912.97 1510.5 122.5 812.24 S 1273.57 E 6400.00 28.00 86.98 0.34 1.81 5934.96 1520,2 122.3 811.62 S 1285.45 E 6425.00 27.91 86.89 0.40 5956.99 1529.9 122.0 811.01 S 1297.25 E 5979.07 1539.5 121.8 810.38 S 1308.96 E 6450.00 6475.00 27,69 27.36 86.76 0.91 6001.18 1549.1 121.5 809.73 S 1320.60 E 6500.00 27.37 86.52 86.44 1.39 6023.35 1558.6 121.3 809.06 S 1332.13 E 6525.00 27.07 86.60 0,15 1.24 6045.56 - 1568.0 121.0 808.35 S 1343.60 E 6550.00 27.29 86.69 0.90 6067.79 1577.5 120.8 807.66 S 1355.01 E 6090.03 1586.9 120.6 806.99 S 1366.42 E 6575.00 6600.00 27.82 28.12 87.70 2.83 6112.19 1596.6 120.3 806.42 S 1377.97 E 6625.00 28.08 88.28 88.31 1.62 6134.27 1606.5 120.1 806.01 S 1389.68 E 6650.00 27.58 88.38 0.17 2.00 6156.32 1616.5 119.9 805.66 S 1401.45 E 6675.00 27.03 87,97 2.33 6178.43 1626.5 119.7 805.32 S 1413.12 E 6200.65 1636.3 119.5 804.96 S 1424.58 E 6700.00 6725.00 27.08 27.14 88.01 88.24 0.21 6222.91 1646.0 119.3 804.56 S 1435.95 E 6750.00 27.67 88.48 0.48 2.17 6245.17 1655.7 119.1 804.19 S 1447.33 E 6267.36 1665.6 118.9 803.86 S 1458.84 E A Gyrodata Directional Survey BP EXPLORATION (ALASKA) Lease: PRUDHOE BAY UNIT - WOA Well: Z -PAD WELL: Z-68,4.5" HES Location: WELLHEAD, N SLOPE BOROUGH Job Number: AK0913GCM209 MEASURED DEPTH feet INCL AZIMUTH deg. deg DOGLEG SEVERITY deg./ 100 ft. VERTICAL DEPTH feet CLOSURE DIST. AZIMUTH feet deg. HORIZONTAL COORDINATES feet 6775.00 28.55 89.21 3.78 6289.41 1675.9 118.7 803.62 S 1470.61 E 6800.00 28.84 89.40 1.22 6311.34 1686.3 118.5 803.48 S 1482.61 E 6825.00 29.04 89.30 0.82 6333.22 1696.9 118.3 803.34 S 1494.71 E 6850.00 28.80 89.50 1.04 6355.10 1707.5 118.1 803.21 S 1506.80 E 6875.00 28.35 89.37 1.82 6377.06 1718.0 117.9 803.10 S 1518.76 E 6900.00 28.34 89.11 0.50 6399.06 1728.4 117.7 802.94 S 1530.63 E 6925.00 28.49 89.05 0.61 6421.05 1738.9 117.5 802.75 S 1542.52 E 6950.00 28.65 89.00 0.65 6443.00 1749.4 117.3 802.54 S 1554.47 E 6975.00 28.97 88.61 1.48 6464.91 1760.0 117.1 802.29 S 1566.52 E 7000,00 28.78 88.39 0.87 6486.80 1770.6 116.9 801.98 S 1578.59 E 7025.00 28.51 87.87 1.47 6508.74 1781.1 116.7 801.59 S 1590.57 E 7050.00 28.38 87.25 1.29 6530.72 1791.5 116.6 801.08 S 1602.46 E 7075.00 28.45 86.86 0.79 6552.71 1801.9 116.4 800.47 S 1614.34 E 7100.00 28.29 84.91 3.76 6574.71 1812.1 116.2 799.62 S 1626.19 E 7125.00 28.16 83.66 2.42 6596.73 1822.2 116.0 798.44 S 1637.95 E 7150.00 28.04 83.55 0.52 6618.79 1832.2 115.8 797.13 S 1649.66 E 7175.00 27.47 83.16 2.39 6640.91 1842.0 115.6 795.78 S 1661.22 E 7200.00 27.71 83.15 0.96 6663.07 1851.8 115.4 794.40 S 1672.72 E 7225.00 27.99 83.39 1.21 6685.17 1861.7 115.2 793.03 S 1684.31 E 7250.00 28.56 84.49 3.09 6707.19 1871.8 115.0 791.78 S 1696.09 E 7275.00 28.97 84.78 1.73 6729.11 1882.2 114.8 790.66 S 1708.07 E 7300.00 29.09 85.18 0.91 6750.96 1892.7 114.7 789.60 S 1720.15 E A Gyrodata Directional Survey BP EXPLORATION (ALASKA) Lease: PRUDHOE BAY UNIT - WOA Well: Z -PAD WELL: Z-68, 4.5" HES Location: WELLHEAD, N SLOPE BOROUGH Job Number: AK0913GCM209 MEASURED INCL AZIMUTH DOGLEG VERTICAL CLOSURE DEPTH SEVERITY DEPTH DIST. AZIMUTH feet deg. deg. deg./ feet feet deg. 100 ft. HORIZONTAL COORDINATES feet 7325.00 29.11 85.19 0.08 6772.81 1903.3 114.5 788.58 S 1732.27 E 7350.00 29.16 85.24 0.22 6794.65 1913.9 114.3 787.56 S 1744.40 E 7375.00 28.91 85.53 1.15 6816.50 1924.6 114.1 786.58 S 1756.49 E 7400.00 28.91 85.70 0.33 6838.39 1935.2 114.0 785.66 S 1768.54 E 7425.00 29.14 85.91 1.01 6860.25 1945.9 113.8 784.77 S 1780.64 E 7450.00 29.31 86.24 0.94 6882.07 1956.7 113.6 783.94 S 1792.82 E 7475.00 29.34 86.50 0.52 6903.86 1967.6 113.5 783.16 S 1805.04 E 7500.00 29.49 86.42 0.62 6925.64 1978.6 113.3 782.40 S 1817.29 E 7525.00 29.84 86.47 1.40 6947.36 1989.6 113.1 781.64 S 1829.64 E 7550.00 30.05 86.58 0.87 6969.03 2000.8 113.0 780,88 S 1842.10 E 7575.00 29.94 86.45 0.51 6990.68 2012.0 112.8 780.12 S 1854.57 E 7600.00 29.93 86.21 0.48 7012.34 2023.1 112.7 779.32 S 1867.02 E 7625.00 29.88 86,10 0.30 7034.01 2034.3 112.5 778.49 S 1879.46 E 7650.00 29.40 86.06 1.92 7055.74 2045.4 112.3 777.64 S 1891.79 E 7675.00 29.61 86.19 0.88 7077.50 2056.4 112.2 776.81 S 1904.08 E 7700.00 30.06 86.41 1.85 7099.19 2067.6 112.0 776.01 S 1916.49 E 7725.00 30.78 87.15 3.25 7120.74 2079.1 111.9 775.30 S 1929.13 E 7750.00 31.24 87.39 1.91 7142.17 2090.8 111.7 774.68 S 1941.99 E 7775.00 31.34 87.42 0.40 7163.54 2102.6 111.6 774.10 S 1954.96 E 7800.00 31.33 87.45 0.07 7184.89 2114.5 111.5 773.51 S 1967.95 E 7825.00 31.22 87.31 0.53 7206.26 2126.4 1113 772.92 S 1980.92 E A Gyrodata Directional Survey BP EXPLORATION (ALASKA) Lease: PRUDHOE BAY UNIT - WOA Well: Z -PAD WELL: Z-68,4.5" HES Location: WELLHEAD, N SLOPE BOROUGH Job Number: AK0913GCM209 MEASURED INCL AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg, deg, deg./ feet feet deg. feet 100 ft. 7850.00 31.14 87.15 0.46 7227.64 2138.2 111.2 772.29 S 1993.84 E 7875.00 30.90 87.15 0.96 7249.07 2150.0 111.0 771.65 S 2006.71 E 7900.00 30.83 87.04 0.36 7270.53 2161.7 110.9 771.00 S 2019.52 E 7925.00 30.82 86.99 0.11 7292.00 2173.4 110.8 770.34 S 2032.31 E 7950.00 31.02 87.08 0.82 7313.44 2185.2 110.6 769.67 S 2045.14 E 7975.00 31.55 87.18 2.13 7334.81 2197.1 110.5 769.02 S 2058.11 E 8000.00 32.59 88.07 4.57 7355.99 2209.3 110.4 768.47 S 2071.37 E 8025.00 33.37 88.58 3.31 7376.97 2221.9 110.2 768.08 S 2084.97 E 8050.00 33.84 88.98 2.08 7397.79 2234.8 110.1 767.78 S 2098.81 E 8075.00 33.93 89.86 2.00 7418.54 2247.9 110.0 767.64 S 2112.74 E 8100.00 33.95 92.03 4.85 7439.28 2261.1 109.9 767.87 S 2126.70 E 8125.00 34.02 94.38 5.26 7460.01 2274.5 109.8 768.65 S 2140.65 E 8150.00 34.17 94.98 1.47 7480.72 2288.0 109.7 769.80 S 2154.62 E 8175.00 34.32 95.16 0.72 7501.38 2301.6 109.6 771.04 S 2168.63 E 8200.00 34.28 94.97 0.46 7522.03 2315.3 109.5 772.28 S 2182.66 E 8225.00 34.40 94.76 0.67 7542.68 2328.9 109.4 773.48 S 2196.71 E 8250.00 34.11 94.58 1.23 7563.34 2342.5 109.3 774,63 S 2210.74 E 8275.00 33.98 94,38 0.69 7584,06 2356.1 109.2 775.72 S 2224.69 E 8300.00 33.89 94.39 0.36 7604.80 2369.5 109.1 776.79 S 2238.61 E 8325.00 33.89 94.12 0.60 7625.55 2383.0 109.1 777.82 S 2252.51 E 8350.00 33.18 93.94 2,87 7646.39 2396.4 109.0 778.79 S 2266.29 E 8375.00 33.32 93.88 0.58 7667.30 2409.6 108.9 779.73 S 2279.96 E BP EXPLORATION (ALASKA) Well: PRUDHOE BAY UNIT - WOA Z -PAD WELL: Z-68 4.5" HES Location: WELLHEAD, N SLOPE BOROUGH 17 Sep 12:26 Presented Survey Gyrodata AK0913GCM209 DEFINITIVE BOTTOM HOLE ------------------ ----------------------------------- ----------------- -------------- -LOCATE-D---- MD: 9894.00 -- - - - - - !� . - ... - -1-.....,... iuuu Luuu JUUU 4000 5000 6000 7000 8000 9000 10000 1100 MEASURED DEPTH (ft) BPEXPLORATION (ALASKA) VVe||: PRU[>MDE BAYUNIT- VVOA Z -PA[} WELL: Z-084.5" MES Location: WELLHEAD. NSLOPFR(lA[l\1(-,H 350 MEOW$] 100 50 17 Sep 12:76 Presented Survey JLOCATED MD: 9894.00 -Luvu Zuuu )uuu -,+UUU bUUU bOUO 7000 8000 9000 IOOOO 110{ MEASURED DEPTH (ft) BP EXPLORATION (ALASKA) Well: PRUDHOE BAY UNIT - WOA Z -PAD WELL: Z-68 4.5" HES Location: WELLHEAD, N SLOPE BOROUGH 13 12 11 10 9 C C � g a� 7 LU W 6 U0 U w J 5 C7 O 4 3 2 1 0 17 Sep 12:27 Presented Survey Gyrodata AK0913GCM209 DEFINITIVE ivVv cvvv 3000 C+UUU SUUU bUUU 7000 8000 9000 10000 1100C MEASURED DEPTH (ft) BP EXPLORATION (ALASKA) Well: PRUDHOE BAY UNIT - WOA Location: WELLHEAD, N SLOPE BOROUGH 0 1000 2000 3000 = 4000 a LU J v 5000 LU 6000 7000 •111 Z -PAD WELL: Z-68 4.5" HES 17 Sep 12:27 Presented Survey lvvv w w suvu -,+UUU SUUU 6000 7000 8000 9000 10000 1100 MEASURED DEPTH (ft) BP EXPLORATION (ALASKA) Well: PRUDHOE BAY UNIT - WOA Location: WELLHEAD. N SLOPE BOROUGH -100- -20p -300 U -400 z_ -500 -600 -700 -800 -900 Z -PAD WELL: Z-68 4.5" HES 17 Sep 12:28 Presented Survey Gyrodata AK0913GCM209 DEFINITIVE 0 -------------------------------- ----- - -- - - - -------------------------------- -- --- - - - - - ---------------- --- - - - - ---------------- - - - - -- ------------------------ - - - - ------------------------ - - - - -- - - - - -- - BOTTOM HO , - - --- - - -- - - - - - LOCATED MD: 9894.0 i lwV 15uu 2000 2500 3000 EASTING (ft) Survey QC - RGS-CT Specification Sheet gym data r SURVEY QUALITY CONTROL - SPECIFICATION DATA PRE -JOB CALIBRATION VERIFICATION CHECK (ROLL TEST) Station ToolFace Gravity Error Scale Factor Rate Error (deg) (Mg) Uncertainty (deg/min) 64 270.04 267.86 0.00006636 4.07 63 270.04 265.72 0.00006583 3.93 62 225.24 -270.36 -0.00006757 -12.14 61 225.24 -274.10 -0.00006851 -16.81 60 45.08 -219.72 -0.00005492 -2.58 59 45.08 -219.36 -0.00005483 -2.98 58 0.58 -98.38 -0.00002483 -4.48 57 0.59 -93.98 -0.00002371 -4.62 56 330.17 214.30 0.00005383 -2.81 55 330.17 222.23 0.00005583 -3.43 54 299.83 406.35 0.00010114 1.57 53 299.83 409.30 0.00010187 0.91 52 270.06 287.76 0.00007129 3.39 51 270.06 295.82 0.00007329 3.34 50 240.08 -79.04 -0.00001967 3.11 49 240.08 -75.59 -0.00001881 2.98 48 210.46 -302.98 -0.00007607 2.53 47 210.46 -296.58 -0.00007447 2.07 46 179.91 -131.61 -0.00003321 -0.37 45 179.91 -130.58 -0.00003295 -1.07 44 149.85 199.84 0.00005019 -1.83 43 149.85 201.98 0.00005073 -2.58 42 120.06 403.45 0.00010042 -3.58 41 120.06 408.12 0.00010158 -5.68 40 90.94 322.23 0.00007984 0.76 39 90.94 331.28 0.00008208 0.67 38 60.52 -47.32 -0.00001177 -0.06 37 60.52 -44.65 -0.00001111 -0.46 36 30.64 -249.70 -0.00006270 0.55 35 30.64 -247.18 -0.00006207 -0.62 34 0.44 -78.25 -0.00001975 -3.14 33 0.44 -73.07 -0.00001844 -5.84 32 269.74 274.60 0.00006803 6.32 31 269.74 279.02 0.00006913 6.41 30 225.37 -276.79 -0.00006917 2.19 29 225.37 -278.14 -0.00006951 2.06 28 45.15 -224.20 -0.00005604 0.28 27 45.15 -222.13 -0.00005552 0.15 26 0.62 -97.25 -0.00002454 1.66 25 0.62 -93.29 -0.00002354 1.34 24 330.29 210.87 0.00005297 1.20 23 330.29 217.37 0.00005461 2.07 22 300.55 401.34 0.00009991 2.92 21 300.55 402.35 0.00010016 3.52 20 269.82 288.20 0.00007140 5.23 19 269.82 293.57 0.00007274 5.37 18 239.54 -100.96 -0.00002513 5.19 17 239.54 -99.14 -0.00002467 5.02 16 210.28 -317.45 -0.00007971 3.14 15 210.28 -316.50 -0.00007947 4.01 14 179.96 -155.59 -0.00003926 1.15 13 179.96 -158.17 -0.00003991 1.43 12 150.00 188.45 0.00004733 -0.47 11 150.00 189.45 0.00004759 -1.20 10 120.09 422.12 0.00010507 -1.31 9 120.09 419.74 0.00010448 -0.89 8 89.72 331.17 0.00008206 0.45 7 89.72 332.06 0.00008228 0.47 6 60.81 -14.57 -0.00000362 1.28 5 60.82 -14.12 -0.00000351 0.76 4 30.63 -294.64 -0.00007398 -0.26 SURV-Q167 (OPS SUR -MA -003) 19'" Nov 03 / Rev 15 Page 1 of 12 AK0913GCM209 Survey QC - RGS-CT Specification Sheet I gyroldsta_ 30.63 -293.67 -0.00007373 -0.57 0.55 -186.05 -0.00004694 1.40 0.55 -185.01 -0.00004668 -1.00 MBO = -0.29 Gravity Error = 34.79 Scale Factor Uncertainty = 0.00000846 Rate Error = 0.22 POST -JOB CALIBRATION VERIFICATION CHECK (ROLL TEST) Station ToolFace Gravity Error Scale Factor Rate Error (deg) (Mg) Uncertainty (deg/min) 17470 270.37 257.49 0.00006379 -2.53 17469 270.37 260.62 0.00006457 -3.45 17468 225.23 -273.24 -0.00006829 -16.58 17467 225.23 -270.43 -0.00006759 -20.57 17466 45.11 -222.95 -0.00005573 -3.46 17465 45.11 -226.46 -0.00005661 -3.31 17464 0.40 -88.57 -0.00002235 -4.43 17463 0.40 -82.32 -0.00002077 -9.34 17462 330.55 232.28 0.00005836 -3.09 17461 330.55 233.20 0.00005859 -3.67 17460 300.15 387.11 0.00009635 -3.83 17459 300.15 392.75 0.00009776 -5.07 17458 270.31 256.39 0.00006352 1.30 17457 270.31 261.04 0.00006467 1.50 17456 239.92 -125.20 -0.00003115 1.29 17455 239.92 -123.14 -0.00003064 0.71 17454 210.44 -292.09 -0.00007334 -0.81 17453 210.44 -289.67 -0.00007273 -2.30 17452 181.10 -100.12 -0.00002526 -2.37 17451 181.10 -99.54 -0.00002512 -2.88 17450 150.98 216.73 0.00005446 -0.76 17449 150.98 217.74 0.00005471 -1.86 17448 120.28 390.73 0.00009726 -1.23 17447 120.28 392.70 0.00009775 -1.97 17446 90.33 275.69 0.00006830 -0.40 17445 90.33 271.77 0.00006733 -0.79 17444 61.03 -51.20 -0.00001274 -3.06 17443 61.03 -48.13 -0.00001197 -4.14 17442 30.95 -238.03 -0.00005976 -2.37 17441 30.96 -234.84 -0.00005896 -2.15 17440 0.35 -34.48 -0.00000870 -5.64 17439 0.35 -30.29 -0.00000764 -7.63 17438 270.04 245.84 0.00006090 1.37 17437 270.04 248.25 0.00006150 0.89 17436 225.44 -273.86 -0.00006844 2.66 17435 225.44 -273.58 -0.00006837 1.96 17434 45.25 -222.91 -0.00005572 7.14 17433 45.25 -220.84 -0.00005520 6.87 17432 0.20 -53.92 -0.00001361 6.10 17431 0.20 -52.44 -0.00001323 5.24 17430 329.53 254.38 0.00006389 -0.96 17429 329.53 260.01 0.00006531 -0.31 17428 299.60 406.11 0.00010107 -0.93 17427 299.60 408.18 0.00010159 -0.77 17426 270.18 276.38 0.00006847 0.88 17425 270.18 281.01 0.00006962 0.23 17424 239.53 -108.26 -0.00002694 0.87 17423 239.53 -107.36 -0.00002672 1.27 17422 210.41 -284.63 -0.00007147 -0.12 17421 210.41 -281.61 -0.00007071 0.63 17420 180.35 -95.76 -0.00002416 -0.46 17419 180.35 -91.49 -0.00002309 -0.16 17418 149.70 227.60 0.00005717 -0.84 17417 149.70 232.75 0.00005846 -0.45 17416 119.87 428.32 0.00010661 -0.74 SURV-Q167 (OPS SUR -MA -003) 19' Nov 03 / Rev 15 Page 2 of 12 AK0913GCM209 Survey QC - RGS-CT Specification Sheet gym#ata_ 17415 119.87 432.08 0.00010755 -1.45 17414 90.41 344.94 0.00008547 1.47 17413 90.41 354.05 0.00008773 0.61 17412 60.44 -9.58 -0.00000238 1.72 17411 60.44 -0.91 -0.00000023 2.16 17410 29.78 -233.85 -0.00005874 0.43 17409 29.78 -224.51 -0.00005639 0.67 17408 0.68 -97.16 -0.00002452 -2.96 17407 0.68 -95.79 -0.00002417 -3.11 MBO = -0.01 Gravity Error = 45.11 Scale Factor Uncertainty = 0.00001108 Rate Error = -1.33 TNTTTAI T.QATTnN Gyro Compass Reading / Station Raw Inclination Raw Azimuth Abs (ERMeas ERThen) 101 10.45 163.15 0.0474 102 10.45 163.21 0.0553 103 10.45 163.21 0.0329 104 10.45 163.40 0.0301 105 10.45 163.39 0.0421 106 10.45 163.33 0.0360 107 10.45 163.25 0.0378 Average 10.45 163.28 0.0402 Tolerance on Average* 34.84 91.00 0.0832 Standard Deviation 0.00 0.10 0.0088 Tolerance on St. Dev.** 0.1° 0.2° 0.0404 Advanced Initialisation Azimuth Advanced Initialisation Standard Deviation Tolerance =TBA * Tolerance on Average of earth horizontal rate difference is given by (1/CosI) * Jf(CosA*Sins*0.1) +0.0811 -/hr ** Tolerance on Standard Deviation of earth horizontal rate difference tolerance is given by (1/CosI) *J[(CosA*Sinl*0.1) +00+ 8 /(�] O/hr nRTFT TIINFS Drift Tune Number Ending Time Ending Depth Ending Inclination Ending Azimuth Residual Gx Bias Start End Residual Gy Bias Start End 1 1409.74 3400.20 19.41 172.08 -0.006 0.005 -0.014 0.014 2 1349.90 5400.41 26.84 87.02 -0.010 0.010 -0.001 0.001 3 1411.37 7400.07 28.86 85.43 0.003 -0.003 -0.005 0.005 4 1441.85 9400.47 34.84 91.00 -0.006 0.006 -0.005 0.005 5 732.37 9914.48 46.88 108.21 0.025 -0.024 -0.044 0.044 6 758.38 9399.85 34.79 90.71 0.000 -0.000 0.000 -0.000 7 1865.92 7400.17 29.14 85.11 0.007 -0.007 0.004 -0.004 8 1.941.69 5399.86 26.86 86.37 0.003 -0.003 0.004 -0.004 9 1843.88 3399.47 19.57 171.34 0.002 -0.002 0.005 -0.005 10 1971.78 1324.99 1 10.87 166.19 0.003 -0.003 0.016 -0.016 Average 0.002 -0.002 -0.004 0.004 Standard Deviation 0.010 0.009 0.016 0.016 Tolerance for both the Average and the Standard Deviation 0.0330/hr 0.0330/hr 0.0330/hr 0.0330/hr SURV-Q167 (OPS SUR -MA -003) 19r Nov 03 / Rev 15 Page 3 of 12 AK0913GCM209 Survey QC - RGS-CT Specification Sheet INCLINATION AND AZIMUTH INRUN AND OUTRUN COMPARISON Depth Corrected Inclination Corrected Azimuth Inrun * I Outrun * I Difference Inrun * Outrun * Difference 100.00 0.18 0.09 0.09 281.30 300.01 -18.71 125.00 0.16 0.20 -0.03 280.89 301.27 -20.38 150.00 0.14 0.34 -0.20 280.47 311.42 -30.95 175.00 0.13 0.49 -0.36 280.06 321.57 -41.51 200.00 0.11 0.63 -0.52 279.64 331.72 -52.08 225.00 0.39 0.77 -0.39 304.25 341.87 -37.62 250.00 0.67 0.92 -0.25 328.65 352.02 -23.37 275.00 0.95 1.06 -0.11 353.05 2.17 -9.11 300.00 1.23 1.21 0.02 17.46 12.31 5.14 325.00 1.33 1.36 -0.03 17.24 16.18 1.06 350.00 1.43 1.51 -0.08 17.02 16.90 0.12 375.00 1.52 1.65 -0.13 16.79 17.62 -0.83 400.00 1.62 1.80 -0.18 16.56 18.34 -1.78 425.00 1.85 1.95 -0.10 17.91 19.06 -1.15 450.00 2.08 2.10 -0.02 19.10 19.79 -0.68 475.00 2.31 2.25 0.06 20.29 20.51 -0.22 500.00 2.54 2.40 0.14 21.28 21.23 0.05 525.00 2.64 2.53 0.10 22.26 22.94 -0.68 550.00 2.73 2.66 0.07 23.24 25.10 -1.86 575.00 2.83 2.78 0.05 24.22 27.25 -3.04 600.00 2.93 2.91 0.02 25.19 29.40 -4.21 625.00 3.04 3.04 0.00 28.69 31.56 -2.87 650.00 3.15 3.16 -0.01 32.09 33.71 -1.62 675.00 3.27 3.29 -0.02 35.49 35.87 -0.37 700.00 3.38 3.41 -0.03 38.89 38.02 0.87 725.00 3.36 3.43 -0.06 40.08 40.68 -0.60 750.00 3.35 3.38 -0.03 41.31 43.72 -2.41 775.00 3.34 3.34 -0.00 42.54 46.76 -4.22 800.00 3.32 3.29 0.03 43.77 49.79 -6.03 825.00 3.25 3.25 0.01 48.25 52.83 -4.59 850.00 3.19 3.20 -0.02 52.74 55.87 -3.13 875.00 3.12 3.16 -0.04 57.22 58.91 -1.68 900.00 3.05 3.11 -0.06 61.71 61.94 -0.23 925.00 3.07 3.21 -0.15 70.07 68.07 2.00 950.00 3.09 3.39 -0.31 78.59 75.68 2.91 975.00 3.11 3.57 -0.47 87.11 83.30 3.82 1000.00 3.12 3.76 -0.63 95.63 90.91 4.73 1025.00 3.46 3.94 -0.47 102.63 98.52 4.11 1050.00 3.80 4.12 -0.32 109.78 106.13 3.65 1075.00 4.14 4.30 -0.16 116.94 113.75 3.19 1100.00 4.48 4.48 0.00 124.09 121.36 2.73 1125.00 4.89 4.98 -0.08 128.42 127.25 1.18 1150.00 5.31 5.66 -0.35 132.90 131.78 1.12 SURV-Q167 (OPS SUR -MA -003) 19`" Nov 03 / Rev 15 Page 4 of 12 AK0913GCM209 Survey QC - RGS-CT Specification Sheet I M� 1175.00 5.73 6.34 -0.61 137.37 136.32 1.06 1200.00 6.14 7.02 -0.88 141.85 140.85 1.00 1225.00 7.05 7.71 -0.66 146.34 145.39 0.95 1250.00 7.97 8.39 -0.42 150.77 149.92 0.85 1275.00 8.88 9.07 -0.19 155.21 154.46 0.75 1300.00 9.80 9.75 0.05 159.64 158.99 0.65 1325.00 10.42 10.52 -0.10 163.84 164.16 -0.32 1350.00 11.22 11.23 -0.02 169.22 169.15 0.07 1375.00 11.97 12.06 -0.09 172.99 173.27 -0.28 1400.00 12.49 12.57 -0.08 174.95 174.52 0.43 1425.00 13.61 13.52 0.09 177.19 177.06 0.13 1450.00 14.73 14.73 -0.01 179.43 179.72 -0.29 1475.00 15.45 15.57 -0.11 180.86 180.74 0.12 1500.00 16.15 16.11 0.04 182.24 181.77 0.47 1525.00 16.64 16.65 -0.00 182.49 182.53 -0.03 1550.00 17.00 16.99 0.01 182.84 182.74 0.10 1575.00 17.37 17.42 -0.05 183.45 183.11 0.34 1600.00 17.65 17.64 0.01 183.36 183.29 0.07 1625.00 18.48 18.48 0.00 183.96 183.69 0.27 1650.00 18.81 18.80 0.00 184.72 184.45 0.27 1675.00 19.18 19.24 -0.06 185.33 185.15 0.18 1700.00 19.44 19.39 0.04 186.06 185.90 0.16 1725.00 19.44 19.51 -0.07 186.15 185.76 0.38 1750.00 19.60 19.60 0.00 186.08 186.08 0.00 1775.00 19.52 19.55 -0.02 186.38 185.94 0.44 1800.00 19.36 19.41 -0.05 186.19 186.11 0.07 1825.00 19.32 19.29 0.04 186.38 186.03 0.34 1850.00 19.38 19.45 -0.07 186.08 185.88 0.20 1875.00 19.71 19.63 0.08 185.43 185.34 0.10 1900.00 20.23 20.28 -0.05 183.85 183.54 0.31 1925.00 20.85 20.81 0.03 182.57 182.49 0.07 1950.00 21.04 21.05 -0.01 181.61 181.27 0.33 1975.00 21.29 21.30 -0.01 180.84 180.80 0.04 2000.00 21.30 21.29 0.01 178.91 178.65 0.26 2025.00 21.51 21.50 0.01 178.40 178.15 0.25 2050.00 21.45 21.49 -0.05 177.80 177.72 0.08 2075.00 21.56 21.48 0.08 175.97 175.86 0.11 2100.00 21.48 21.58 -0.10 174.29 174.01 0.28 2125.00 21.60 21.51 0.09 173.25 173.25 0.00 2150.00 21.54 21.60 -0.05 173.07 172.63 0.43 2175.00 21.70 21.70 -0.00 172.46 172.42 0.04 2200.00 21.67 21.65 0.02 172.41 172.15 0.26 2225.00 21.81 21.78 0.03 171.88 171.63 0.24 2250.00 21.83 21.88 -0.05 171.56 171.36 0.20 2275.00 22.01 21.90 0.11 171.15 171.01 0.13 SURV-Q167 (OPS SUR -MA -003) 19" Nov 03 / Rev 15 Page 5 of 12 AK0913GCM209 Survey QC - RGS-CT Specification Sheet 2300.00 22.02 22.10 -0.08 171.33 170.89 0.43 2325.00 22.17 22.12 0.04 171.22 171.19 0.03 2350.00 22.22 22.19 0.03 171.53 171.19 0.34 2375.00 22.69 22.66 0.03 172.82 172.51 0.31 2400.00 22.68 22.72 -0.05 173.17 172.96 0.21 2425.00 22.67 22.57 0.09 173.46 173.24 0.22 2450.00 22.31 22.39 -0.08 174.41 173.84 0.57 2475.00 22.14 22.13 0.00 174.65 174.63 0.03 2500.00 21.91 21.86 0.05 175.57 175.14 0.43 2525.00 21.85 21.87 -0.02 175.72 175.38 0.34 2550.00 21.67 21.70 -0.03 176.88 176.53 0.35 2575.00 21.53 21.47 0.06 177.12 177.00 0.12 2600.00 21.41 21.39 0.01 177.65 177.05 0.59 2625.00 20.99 21.09 -0.10 177.81 177.59 0.21 2650.00 20.40 20.39 0.01 178.91 178.54 0.37 2675.00 19.90 19.82 0.07 179.42 179.25 0.17 2700.00 19.63 19.68 -0.05 179.92 179.33 0.59 2725.00 19.59 19.60 -0.01 179.65 179.58 0.07 2750.00 19.33 19.30 0.02 179.76 179.44 0.32 2775.00 19.33 19.25 0.08 179.41 179.09 0.31 2800.00 19.20 19.27 -0.06 179.65 179.06 0.59 2825.00 19.21 19.19 0.02 179.18 179.14 0.04 2850.00 19.04 19.01 0.02 179.39 179.06 0.34 2875.00 19.01 18.93 0.08 179.01 178.66 0.34 2900.00 18.76 18.84 -0.08 179.07 178.54 0.53 2925.00 18.72 18.70 0.02 178.66 178.62 0.05 2950.00 18.56 18.51 0.05 178.84 178.47 0.37 2975.00 18.49 18.43 0.06 178.43 178.13 0.30 3000.00 18.35 18.36 -0.02 178.53 177.91 0.63 3025.00 18.32 18.35 -0.03 178.02 178.00 0.02 3050.00 18.41 18.32 0.09 178.09 177.75 0.35 3075.00 18.52 18.43 0.08 177.53 177.32 0.20 3100.00 18.99 18.92 0.07 176.87 176.32 0.55 3125.00 19.24 19.27 -0.03 176.03 175.92 0.10 3150.00 19.38 19.29 0.09 176.30 175.98 0.32 3175.00 19.43 19.35 0.08 176.01 175.82 0.19 3200.00 19.52 19.47 0.05 176.27 175.64 0.63 3225.00 19.38 19.44 -0.06 176.06 175.84 0.22 3250.00 19.33 19.27 0.06 176.65 176.34 0.32 3275.00 19.30 19.22 0.08 176.50 176.32 0.18 3300.00 19.32 19.24 0.08 177.84 177.15 0.69 3325.00 19.28 19.31 -0.03 177.93 177.66 0.27 3350.00 19.39 19.34 0.05 177.14 177.09 0.04 3375.00 19.46 19.31 0.15 173.88 173.86 0.02 3400.00 19.56 19.50 0.06 172.12 171.62 0.51 SURV-QI67 (OPS SUR -MA -003) 191" Nov 03 / Rev 1S Page 6 of 12 AK0913GCM209 Survey QC - RGS-CT Specification Sheet g�ym-4 3 ta 3425.00 19.65 19.59 0.06 169.46 169.28 0.18 3450.00 19.47 19.54 -0.06 166.02 165.62 0.40 3475.00 19.65 19.63 0.02 165.56 165.00 0.57 3500.00 19.63 19.67 -0.04 164.70 164.51 0.19 3525.00 19.35 19.43 -0.08 161.61 161.50 0.11 3550.00 19.08 19.04 0.03 156.60 156.61 -0.02 3575.00 18.88 18.91 -0.03 154.95 154.95 0.01 3600.00 18.97 18.89 0.08 154.03 153.79 0.24 3625.00 18.66 18.59 0.08 150.02 150.13 -0.11 3650.00 18.36 18.33 0.04 146.61 146.37 0.24 3675.00 18.30 18.18 0.12 144.18 143.95 0.24 3700.00 18.09 18.08 0.01 142.66 142.54 0.13 3725.00 17.52 17.50 0.03 138.37 138.24 0.13 3750.00 17.17 17.05 0.12 134.59 134.34 0.25 3775.00 17.12 17.10 0.01 134.11 133.70 0.41 3800.00 17.50 17.33 0.17 132.59 132.26 0.33 3825.00 18.38 18.23 0.15 128.41 128.46 -0.05 3850.00 19.20 19.10 0.10 125.55 125.04 0.51 3875.00 19.57 19.49 0.09 124.26 123.86 0.40 3900.00 19.87 19.86 0.01 123.28 122.77 0.51 3925.00 20.74 20.62 0.11 121.33 120.89 0.44 3950.00 21.11 21.13 -0.02 119.87 119.49 0.39 3975.00 21.33 21.29 0.04 119.37 118.82 0.55 4000.00 21.64 21.60 0.04 116.83 116.70 0.13 4025.00 22.75 22.72 0.03 114.19 113.67 0.52 4050.00 23.31 23.25 0.05 113.14 112.70 0.45 4075.00 23.42 23.47 -0.05 112.88 112.44 0.44 4100.00 24.43 24.30 0.12 110.69 110.36 0.33 4125.00 25.27 25.28 -0.01 109.58 109.19 0.39 4150.00 25.57 25.53 0.04 109.63 109.07 0.56 4175.00 25.82 25.80 0.02 108.91 108.67 0.25 4200.00 26.75 26.65 0.11 106.79 106.54 0.25 4225.00 27.72 27.64 0.08 104.03 103.77 0.26 4250.00 28.06 28.06 -0.00 103.28 102.73 0.55 4275.00 28.40 28.32 0.08 102.69 102.36 0.32 4300.00 29.22 29.18 0.04 99.99 99.74 0.26 4325.00 29.92 29.84 0.08 98.12 97.67 0.45 4350.00 30.08 30.06 0.02 97.52 97.13 0.38 4375.00 30.29 30.28 0.02 96.25 95.84 0.41 4400.00 30.59 30.51 0.08 92.58 92.28 0.31 4425.00 30.68 30.66 0.02 90.97 90.38 0.59 4450.00 30.88 30.76 0.12 90.31 89.86 0.45 4475.00 30.80 30.77 0.04 88.85 88.36 0.48 4500.00 30.94 30.79 0.15 86.57 86.09 0.48 4525.00 31.07 30.95 0.12 85.59 85.22 0.36 SURV-Q167 (OPS SUR -MA -003) 19" Nov 03 / Rev 15 Page 7 of 12 AK0913GCM209 Survey QC - RGS-CT Specification Sheet 4550.00 31.14 31.01 0.13 85.08 84.59 0.49 4575.00 31.24 31.07 0.17 84.22 83.90 0.32 4600.00 31.27 31.20 0.07 83.99 83.54 0.45 4625.00 31.44 31.33 0.11 83.70 83.28 0.43 4650.00 31.20 31.20 0.01 83.39 82.99 0.40 4675.00 29.70 29.76 -0.05 82.48 82.09 0.38 4700.00 29.21 29.26 -0.05 82.10 81.61 0.49 4725.00 29.09 29.07 0.02 81.94 81.35 0.59 4750.00 28.96 28.95 0.01 82.02 81.36 0.65 4775.00 28.65 28.61 0.04 82.29 81.64 0.65 4800.00 28.32 28.19 0.13 82.57 82.01 0.55 4825.00 28.33 28.22 0.11 83.06 82.54 0.52 4850.00 28.48 28.37 0.11 84.13 83.64 0.50 4875.00 28.81 28.75 0.06 86.18 85.83 0.35 4900.00 28.92 28.96 -0.04 86.50 86.02 0.48 4925.00 29.15 29.09 0.06 86.69 86.08 0.61 4950.00 29.33 29.20 0.13 86.52 86.15 0.37 4975.00 29.19 29.11 0.08 86.70 86.29 0.41 5000.00 29.37 29.28 0.10 86.51 86.25 0.25 5025.00 29.15 29.24 -0.10 86.45 86.02 0.43 5050.00 28.91 28.89 0.02 86.43 85.85 0.58 5075.00 28.20 28.12 0.08 86.13 85.88 0.24 5100.00 28.14 28.15 -0.00 86.34 85.89 0.44 5125.00 27.88 27.93 -0.05 86.08 85.69 0.39 5150.00 26.71 26.71 0.01 86.07 85.57 0.50 5175.00 26.54 26.49 0.05 85.97 85.77 0.21 5200.00 26.50 26.52 -0.02 86.37 85.75 0.62 5225.00 26.56 26.44 0.12 86.97 86.50 0.47 5250.00 26.46 26.47 -0.01 88.20 87.80 0.39 5275.00 26.55 26.53 0.02 88..18 87.76 0.42 5300.00 26.47 26.41 0.05 88.33 87.79 0.54 5325.00 26.38 26.33 0.05 87.72 87.61 0.11 5350.00 26.44 26.44 -0.01 87.75 87.22 0.53 5375.00 26.50 26.41 0.09 87.16 86.83 0.33 5400.00 26.82 26.71 0.11 87.03 86.78 0.25 5425.00 27.46 27.44 0.01 86.50 86.12 0.38 5450.00 28.43 28.30 0.13 86.20 85.76 0.44 5475.00 28.55 28.55 0.01 86.27 85.90 0.38 5500.00 28.73 28.74 -0.01 86.01 85.71 0.29 5525.00 28.67 28.66 0.01 85.85 85.26 0.59 5550.00 28.80 28.74 0.06 85.59 85.41 0.18 5575.00 28.81 28.81 -0.01 85.60 85.17 0.42 5600.00 28.68 28.73 -0.05 85.36 84.90 0.46 5625.00 28.79 28.68 0.11 85.19 84.91 0.28 5650.00 28.83 28.91 -0.08 85.17 84.80 0.37 SURV-Q167 (OPS SUR -MA -003) 19" Nov 03 / Rev 15 Page 8 of 12 AK0913GCM209 Survey QC - RGS-CT Specification Sheet � k�ft 5675.00 28.72 28.71 0.02 83.99 83.65 0.33 5700.00 28.81 28.72 0.09 84.04 83.61 0.43 5725.00 28.71 28.76 -0.05 83.60 83.41 0.20 5750.00 28.69 28.67 0.02 83.59 83.14 0.45 5775.00 28.39 28.38 0.01 83.39 83.08 0.31 5800.00 28.44 28.43 0.01 83.11 82.86 0.25 5825.00 28.26 28.25 0.01 83.07 82.51 0.56 5850.00 28.12 28.08 0.05 82.74 82.62 0.12 5875.00 28.21 28.18 0.02 82.96 82.46 0.50 5900.00 27.90 27.89 0.01 83.94 83.42 0.52 5925.00 27.90 27.83 0.08 84.47 84.23 0.24 5950.00 27.73 27.79 -0.06 84.67 84.18 0.49 5975.00 27.49 27.41 0.08 84.11 83.94 0.17 6000.00 27.37 27.35 0.03 84.17 83.85 0.31 6025.00 27.08 27.11 -0.03 83.91 83.47 0.43 6050.00 27.26 27.10 0.16 83.77 83.55 0.22 6075.00 27.47 27.46 0.01 83.95 83.54 0.41 6100.00 28.31 28.13 0.17 83.61 83.31 0.29 6125.00 28.72 28.57 0.14 83.79 83.42 0.37 6150.00 28.84 28.89 -0.05 83.70 83.35 0.35 6175.00 28.91 28.83 0.08 83.58 83.18 0.40 6200.00 28.72 28.67 0.05 83.80 83.43 0.37 6225.00 28.67 28.68 -0.01 83.64 83.42 0.22 6250.00 28.69 28.61 0.09 84.06 83.51 0.55 6275.00 28.64 28.59 0.05 84.92 84.49 0.43 6300.00 28.79 28.74 0.05 86.25 85.95 0.30 6325.00 28.66 28.66 -0'.00 86.73 86.19 0.54 6350.00 28.40 28.36 0.04 86.64 86.42 0.22 6375.00 28.47 28.41 0.06 86.73 86.53 0.20 6400.00 28.02 28.04 -0.03 86.80 86.30 0.50 6425.00 27.96 27.82 0.14 86.57 86.35 0.22 6450.00 27.71 27.60 0.12 86.45 86.17 0.28 6475.00 27.38 27.42 -0.04 86.21 85.96 0.25 6500.00 27.37 27.36 0.01 86.18 85.83 0.35 6525.00 27.12 27.01 0.11 86.41 85.92 0.49 6550.00 27.33 27.23 0.10 86.33 86.18 0.15 6575.00 27.90 27.75 0.14 87.57 86.96 0.61 6600.00 28.15 28.14 0.02 88.10 87.60 0.50 6625.00 28.07 28.01 0.06 87.98 87.77 0.21 6650.00 27.59 27.55 0.04 88.11 87.79 0.31 6675.00 27.04 27.10 -0.07 87.67 87.40 0.26 6700.00 27.11 27.02 0.09 87.78 87.39 0.39 6725.00 27.20 27.07 0.13 88.04 87.58 0.46 6750.00 27.76 27.58 0.18, 88.14 87.95 0.19 6775.00 28.63 28.48 0.15 88.97 88.59 0.38 SURV-Q167 (OPS SUR -MA -003) 19" Nov 03 / Rev 15 Page 9 of 12 AK0913GCM209 Survey QC - RGS-CT Specification Sheet I k tdLaLta 6800.00 28.88 28.87 0.01 89.20 88.74 0.47 6825.00 29.07 28.97 0.10 89.02 88.71 0.31 6850.00 28.84 28.68 0.17 89.24 88.91 0.33 6875.00 28.35 28.40 -0.06 89.05 88.83 0.21 6900.00 28.39 28.33 0.06 88.79 88.56 0.23 6925.00 28.54 28.43 0.11 88.86 88.38 0.48 6950.00 28.70 28.62 0.08 88.76 88.37 0.39 6975.00 29.03 28.84 0.19 88.26 88.10 0.16 7000.00 28.79 28.73 0.06 88.07 87.85 0.22 7025.00 28.53 28.56 -0.04 87.53 87.35 0.18 7050.00 28.42 28.35 0.07 86.91 86.72 0.19 7075.00 28.50 28.42 0.07 86.61 86.25 0.36 7100.00 28.31 28.33 -0.03 84.50 84.46 0.04 7125.00 28.20 28.06 0.14 83.36 83.09 0.27 7150.00 28.07 28.00 0.07 83.35 82.89 0.45 7175.00 27.51 27.44 0.07 82.89 82.56 0.33 7200.00 27.77 27.58 0.19 82.87 82.56 0.30 7225.00 28.07 27.90 0.17 83.24 82.69 0.55 7250.00 28.64 28.53 0.11 84.29 83.83 0.46 7275.00 29.03 28.91 0.12 84.52 84.18 0.34 7300.00 29.16 29.05 0.11 84.98 84.51 0.46 7325.00 29.15 29.16 -0.02 84.92 84.60 0.32 7350.00 29.21 29.12 0.09 84.89 84.74 0.15 7375.00 28.95 28.85 0.10 85.23 84.97 0.26 7400.00 28.99 28.86 0.13 85.41 85.11 0.31 7425.00 29.21 29.02 0.19 85.56 85.39 0.17 7450.00 29.35 29.18 0.17 86.00 85.61 0.39 7475.00 29.42 29.28 0.14 86.31 85.81 0.50 7500.00 29.55 29.49 0.05 86.14 85.83 0.31 7525.00 29.91 29.78 0.12 86.17 85.90 0.26 7550.00 30.12 29.99 0.13 86.29 86.01 0.28 7575.00 29.96 29.94 0.03 86.14 85.89 0.25 7600.00 30.00 29.82 0.18 85.87 85.67 0.19 7625.00 29.75 29.92 -0.16 85.78 85.52 0.26 7650.00 29.45 29.36 0.09 85.81 85.44 0.37 7675.00 29.68 29.56 0.12 85.91 85.60 0.32 7700.00 30.14 29.98 0.16 86.16 85.79 0.37 7725.00 30.85 30.73 0.12 86.87 86.56 0.30 7750.00 31.31 31.13 0.17 87.06 86.85 0.22 7775.00 31.35 31.28 0.07 87.21 86.76 0.45 7800.00 31.36 31.39 -0.03 87.20 86.82 0.38 7825.00 31.25 31.18 0.07 86.93 86.81 0.11 7850.00 31.13 31.10 0.03 86.88 86.55 0.33 7875.00 30.93 30.87 0.06 86.86 86.56 0.30 7900.00 30.83 30.81 0.03 86.79 86.43 0.36 SURV-Q167 (OPS SUR -MA -003) 19' Nov 03 / Rev 15 Page 10 of 12 AK0913GCM209 Survey QC - RGS-CT Specification Sheet 7925.00 30.86 30.88 -0.02 86.71 86.41 0.31 7950.00 31.07 30.93 0.15 86.71 86.58 0.14 7975.00 31.62 31.45 0.17 86.94 86.55 0.40 8000.00 32.68 32.46 0.22 87.82 87.44 0.38 8025.00 33.43 33.32 0.11 88.41 87.88 0.53 8050.00 33.89 33.85 0.03 88.68 88.42 0.26 8075.00 33.96 33.87 0.09 89.64 89.21 0.43 8100.00 33.95 33.94 0.00 91.88 91.31 0.57 8125.00 34.07 33.90 0.17 94.18 93.71 0.47 8150.00 34.18 34.23 -0.05 94.77 94.33 0.44 8175.00 34.35 34.30 0.05 94.92 94.53 0.39 8200.00 34.29 34.35 -0.06 94.62 94.46 0.16 8225.00 34.40 34.34 0.06 94.44 94.21 0.23 8250.00 34.12 34.09 0.03 94.23 94.06 0.17 8275.00 33.96 33.94 0.02 94.13 93.75 0.38 8300.00 33.91 33.86 0.05 94.10 93.82 0.28 8325.00 33.82 33.99 -0.18 93.84 93.54 0.30 8350.00 33.20 33.15 0.05 93.67 93.34 0.32 8375.00 33.33 33.41 -0.08 93.60 93.29 0.31 8400.00 33.15 33.16 -0.01 93.40 93.14 0.25 8425.00 33.44 33.38 0.06 93.32 93.28 0.04 8450.00 33.97 33.90 0.07 93.18 92.93 0.25 8475.00 34.69 34.51 0.18 93.04 92.88 0.16 8500.00 35.36 35.28 0.08 92.89 92.62 0.28 8525.00 35.41 35.33 0.08 92.70 92.32 0.38 8550.00 35.56 35.57 -0.01 92.62 92.33 0.28 8575.00 35.37 35.43 -0.06 92.58 92.24 0.34 8600.00 35.31 35.33 -0.03 92.46 92.13 0.33 8625.00 35.44 35.50 -0.06 92.30 92.12 0.18 8650.00 35.14 35.29 -0.15 92.07 91.85 0.21 8675.00 35.11 35.11 -0.01 91.77 91.66 0.12 8700.00 35.08 35.08 0.01 91.55 91.48 0.07 8725.00 34.99 35.08 -0.09 91.28 91.10 0.17 8750.00 34.99 34.91 0.08 91.13 90.91 0.21 8775.00 34.70 34.70 -0.01 90.64 90.57 0.08 8800.00 34.70 34.77 -0.07 90.42 90.24 0.19 8825.00 34.46 34.37 0.10 90.13 89.83 0.29 8850.00 34.40 34.42 -0.02 89.92 89.71 0.20 8875.00 34.36 34.41 -0.05 89.77 89.46 0.32 8900.00 34.20 34.20 -0.00 89.53 89.11 0.42 8925.00 34.28 34.30 -0.01 89.42 89.15 0.27 8950.00 34.09 34.19 -0.10 89.31 88.96 0.36 8975.00 33.66 33.87 -0.21 89.44 89.01 0.44 9000.00 33.29 33.28 0.01 89.73 89.35 0.38 9025.00 33.37 33.37 0.00 90.40 90.10 0.30 SURV-Q167 (OPS SUR -MA -003) 19' Nov 03 / Rev 15 Page 11 of 12 AK0913GCM209 Survey QC - RGS-CT Specification Sheet I 0� L.. 9050.00 33.70 33.82 -0.12 90.93 90.50 0.43 9075.00 33.61 33.67 -0.06 91.36 90.97 0.39 9100.00 33.20 33.32 -0.12 91.12 90.93 0.19 9125.00 32.96 33.12 -0.16 90.87 90.65 0.22 9150.00 32.41 32.57 -0.16 90.65 90.34 0.30 9175.00 32.09 32.21 -0.12 90.48 90.15 0.33 9200.00 32.13 32.08 0.05 90.33 90.09 0.25 9225.00 32.77 32.80 -0.03 90.66 90.32 0.33 9250.00 33.48 33.54 -0.06 90.87 90.46 0.41 9275.00 33.55 33.58 -0.03 91.16 90.75 0.41 9300.00 33.47 33.50 -0.04 91.37 91.09 0.29 9325.00 33.88 33.83 0.04 91.49 91.21 0.29 9350.00 34.39 34.38 0.00 91.76 91.44 0.32 9375.00 34.39 34.39 -0.00 91.48 91.23 0.25 9400.00 34.79 34.67 0.12 91.01 90.88 0.13 9425.00 35.37 35.39 -0.03 90.42 90.38 0.04 9450.00 36.16 36.19 -0.03 90.40 90.34 0.06 9475.00 36.07 36.17 -0.10 90.35 90.24 0.11 9500.00 36.14 36.13 0.01 90.34 90.25 0.09 9525.00 35.94 35.96 -0.03 90.14 90.25 -0.12 9550.00 35.39 35.67 -0.28 90.04 90.41 -0.37 9575.00 34.97 35.12 -0.15 89.99 90.03 -0.04 9600.00 34.98 35.04 -0.06 89.99 89.96 0.03 9625.00 34.76 34.87 -0.11 90.05 90.01 0.04 9650.00 34.52 34.56 -0.04 90.17 90.21 -0.03 9675.00 34.41 34.46 -0.05 90.20 90.24 -0.04 9700.00 34.35 34.45 -0.10 90.10 90.12 -0.02 9725.00 34.93 34.78 0.15 90.01 89.90 0.11 9750.00 36.81 36.63 0.18 91.33 90.85 0.48 9775.00 37.66 37.63 0.03 94.73 94.07 0.66 9800.00 38.79 38.58 0.21 99.58 98.93 0.65 9825.00 39.90 39.57 0.33 104.27 103.37 0.90 9850.00 42.05 41.60 0.45 106.85 106.51 0.34 9875.00 44.98 44.63 0.35 107.72 107.45 0.27 Average 0.0094 0.3100 Standard Deviation 0.1304 0.1684 Tolerance for both the Average and the Standard Casing 0.30 Deviation Drill i e 0.30 Casing 0.50 Drill i e 0.750 - inoinauon ana Hzimutn interpoiatea to same depths as shown. SURV-Q167 (OPS SUR -MA -003) 19" Nov 03 / Rev 15 Page 12 of 12 AK0913GCM209 Survey QC - RGS-CT Analysis Sheet SURVEY QUALITY CONTROL - DATA ANALYSIS REFERENCE SYSTEMS Grid System I I Grid Correction 0.00 Azimuth reference: Grid True North TRUE NORTH Vertical reference: RKB/MSL/Other RKB I If otherive details TIE ON DATA Depth 0.00 Inclination 0.00 Azimuth 0.00 TVD 0.00 Northings 0.00 Eastin s 0.00 Latitude 70.2977 Az. Ref: Grid rue True Grid Corrected Y N? N Description CALIBRATION Tool Number F0052 Calibration Date 1 18 Apr 2012 OPERATING TEMPERATURE Calibration range From 49.97 To 119.48 Gyro operating ran e From 72.09 To 113.97 Sec' - Within calibration range FIELD ROLL TEST(Only valid on fixed structures. When not possible input roll test data performed after return to base Cal value I Pre job offset Oost job offset I Abs dif.cal. ost Abs dif. re. ost Sec' Accel Scale 1 0.0000561 0.000008 0.000011 0.000011 0.000003 Cal Post - 0.00015 Mass Unbalance 1 0.19 1 -0.29 -0.01 0.01 0.28 Pre Post - 0.41hr INITIALISATION Depth A rox 1325.26 No of stns 7 Spec' - Min No. - 6 Azimuth Mean 163.28 Std deviation 0.10 Sec' - Azi SD 0.2° Inclination Mean 10.45 Std deviation 0.00 Sec' - Inc SD 0.10 Earth Horizontal Rate IMean Abs meas-theor 0.04 Std deviation 0.01 Sec' - See Q167 DRIFT TUNE Residual x gyro bias Mean -0.002 1 Std dev' 1 0.009 1 Sec's - Mean and SD - 0.3330 hr Residual ro bias Mean 1 0.004 1 Std dev' 1 0.016 1 5 ec's - Mean and SD - 0.333c)/hr TOOLFACE RATE Maximum toolface rate 1 41.78 Sec' - 4000/sec IN/OUT COMPARISON (AZI' N/A IF INC' <150) Inclination Difference I Mean 0.01Std dev' 10.13 Sec's - Casing 0.30Drill pipe 0.30 Azimuth Difference I Mean 10.31 Std dev' 1 0.17 Sec's - Casing 0.51/Drill pipe 0.751 Lateral Divergence/1000 1 1.88 Sec - 5.0/1000 Vertical Diver ence/1000 0.21 Spec' - 2.0 1000 DEPTH CONTROI Wireline Company Schlumberger Line type .23" Encoder SF Schlumberger Max Depth TD 9894 CCL Corrected NO Zero Depth(Rig u RKB @102.82 FT AMSL Rezero Depth -9 Given pup joint depth NA Measured P3 NA Strech cor. At TD divided by TD 1000 .816 S ec' - 1.5/1000 Dif. Between rigup and rezero depths divided by TD/1000 .918 Sec' - 2.0/1000 Dif. Between given and meas depth divided by meas/1000 NA Sec' - 2.0/1000 SURV-Q165 (OPS SUR -MA -010) 22nd Jan 2004 / Revision 20 Page 1 of 1 AK0913GCM209 Survey QC - RGS-CT Acceptance Sheet gy FIELD AND SURVEY INFORMATION Operator BP EXPLORATION (ALASKA) Field / Platform WELLHEAD Well Number PRUDHOE BAY UNIT - WOA Z -PAD WELL: Z-68 Survey section From 0.00 ft. to 9894.0 ft. Date 9/17/2013 Gyrodata Job No AK0913GCM209 Gyrodata Surveyors Christopher Prince Job Objective High Accuracy Gyro Survey SURVEY PERFORMANCE SURVEY ACCEPTED In Spec' QC Parameter Yes/No/NA Possible Actions Contact Duty Engineer to discuss options: Operational temperature within Yes 1. Recalibrate tool to higher temperature specification 2. Resurvey with backup tool 3. Resurvey 'Hot' section at higher speed Roll test data within specification Contact Duty Engineer to discuss options: Only valid on land/fixed installations Yes 1. Recalibrate tool and reprocess survey 2. Resurvey with backup tool Continuous initialisation within Take new initialisation, after three failures: specification Yes 1. Contact Duty Engineer or, 2. Resurvey with back up tool. Contact Duty Engineer to discuss options: Toolface rate within specification Yes Resurvey section from previous bias check Investigate and comment if effects are negligible Contact Duty Engineer to discuss options: Drift tunes within specification Yes 1. Reprocess with different software settings 2. Resurvey with backup tool Inrun/Outrun comparison within Contact Duty Engineer to discuss options. specification Yes Resurvey is usually not required if either inrun or outrun meet all other QC parameters Depth control within specification Yes Contact Duty Engineer to discuss options. Action taken: Note: Provided satisfactory action has been taken, parameters out with specification will not necessarily fail a survey. SURVEY ACCEPTED Gyrodata Representative Client's Representative SURV-QI66 (OPS SUR -MA -003) 13" Nov 03 / Revision 12 Page 1 of 1 AK0913GCM209 2�3-0q3 233o 1 by 0 2-68P131 Survey Geodetic Report km)!it r (Def Survey) Client BP Vertical Section Azimuth: 115.000 ` (True North) Field: Prudhoe Bay Unit - WOA Vertical Section Origin: 0.000 it, 0.000 8 Structure I Slot: Z -PAD I Slot (SP) TVD Reference Datum: Rotary Table Well: Z-6: TVD Reference Elevation: 102.820 R above AISL Borehole: Z-681`81 Ground Elevetlon: 55.900 it abave MSL APM: 500292349370 Magnetic Declination: 20.085' Survey Name: Z-681`9/ Total Gravity Fkld Strength: 1001.9930mgn (9.80605 Based) Survey Data: August 15, 2013 Total Magnetic Field Strength: 57607.747 nT Tort I AHD 10011 ERD Ratio: 230.326' 14563.552 h 16.08910.505 Magnetic DIP Angle: 80.976 " Coordinate Reference System: NAD27 Alaska State Plane, Zone 04, US Feet Declination Dab: July 28, 2013 Location Lot I Long: N 70' 17'51.59215". W 149' 11' 19.68329" Magnetic Declination Model: 8GGM 2012 Location Grid WE YIR: N 5959100.230 f1US, E 600170.920 ftUS North Reference: True North CRS Grid Comrergenca Angie: 0.7637' Grid Corrvergence Used: 0,0000' Grid Scat. Factor: 0.9999114 Total Corr Mag Nort"True North: 20.0854' 0.00 000 Local Coord Referenced To; Well Head Comments MD Incl Arlm True TVOSS TVD VSEC AHD Closure NS EW OLS Northing Ea.Ung Latitude Longitude ('1 (ftl (RI Ift) (ft) (fit (ft) (ft) (°110061 (RUS) (ftUS1 O (I RTE 11 0.00 0.00 -102.82 0.00 (I1 0.00 0.00 0.00 000 NIA 5959100.23 600170-92 70.29766449 -149.18880091 WRP 46.92 0.00 0.00 S5.90 46.92 0.00 0.00 0.00 000 0.00 0.00 5959100.23 600170.92 70.29766449 -149.18880091 100,00 0.15 279.71 -2.82 100.00 -0.07 0.07 0.07 0,01 -0.07 028 595910D.24 600170.85 70.29766452 -149.18890147 190.00 0.23 323.42 87.18 190.00 -0.34 0.35 0.34 0.18 -0.29 0.18 5959100.40 600170.63 70.29766497 -149.18880328 281.00 0.28 1319 178.18 281,00 -0.55 0.7C 0.64 0.54 -0.35 0.24 5959100.76 600170.56 70.29766596 '149.18880375 374.00 1,01 13.50 27117 373.99 -0.75 1.78 1.56 1.56 -0.11 0.78 5959101.79 600170.79 70.29766874 -149.18880178 464.00 2.58 11,89 361.13 463.95 -1,37 4.60 4.34 4.31 0.50 1.75 5959104,55 600171.36 7029767626 -149.18879690 495.11 2.59 14.95 392.20 495.02 -1,65 6.00 5.74 5.68 0.82 0.44 5959105.92 600171.67 7029767999 -149.18879426 587,22 3.17 22.22 484.20 587.02 -2.14 10.62 10.31 10.04 2.32 0.74 595911030 600173.11 70.29769193 -149.18878211 682.60 3.79 34.12 579.40 682,22 -1.77 16.39 15.93 15.10 5.09 0.99 5959115.39 600175.81 70.29770572 -149.18875972 774.80 3.31 43.93 671.43 774,25 -0.42 22,09 21,36 19.54 8.64 0.84 5959119,88 600179.30 70.29771785 -149.18873093 862.12 3.16 55.89 758.61 861.43 1.63 27.00 25.86 2270 12.38 0.79 5959123.09 600183.00 70.29772650 -149.18870063 957.35 3.01 82.45 853.70 956.52 5.09 32.03 29.84 24.50 17.04 1.50 5959124.95 600187.63 70.29773142 -149.18866296 1053 OD 3.95 113.93 949.19 1052.01 10.50 37.70 32.56 2349 22.54 2.19 5959124.02 600193.14 7029772867 -149.18861842 1146.24 5.14 129.78 1042.13 1144.95 17.75 45.04 3410 19.52 28.68 .1,84 5959120.13 600199.34 7029771781 -149.18656866 1242.64 8.22 152.69 1137.88 1240.70 27.38 56.11 36.74 10.63 35.17 4.17 5959111.33 600205.94 70.29769352 -149.18851616 1335.38 11,12 168.09 1229.31 1332,13 38.00 71,60 40.26 -4.02 40.06 4,16 5959096.75 600211.02 7029765351 -149.18917657 1430.22 14,16 176.77 1321.85 1424.67 48.98 02.31 49.17 -24.56 42.60 3.77 5959076.25 600213.84 70.29759740 -149,18845599 1525.47 17.05 183.11 1413.59 1516.41 59.70 117.91 65.73 -50.14 42,50 3.52 5959050.67 600214.08 70.29752751 -149.18845681 1619.52 18,46 163.29 1503.15 1605,97 70.35 146,59 88.76 -78.77 40,89 1.50 5959022.02 600212.86 70.29744928 -149,18846979 1714.25 19.68 186.56 1592.69 1695.51 80.95 177.53 116.06 -109.59 38.21 1.71 5958991.16 600210.58 7029736508 -149.18849152 1 81 1.06 19.00 186.76 1684.03 1786.85 91.D4 209.59 145.58 '141.44 34.49 071 595695928 600207.29 70.29727809 -149.18852162 1904.40 20.75 182.93 1771.81 1874,63 102.01 241.31 175.95 -173.04 31.86 2.34 5958927.64 600205.08 70.29719174 -149.18854295 2000.76 21.51 178.03 1861.69 1964,51 116,43 276.03 210.14 -207.75 31.59 2,00 5958892.94 600205,28 70.29709694 -149.18854510 2095.28 21.64 174.15 1949.60 2052.42 133.23 310,77 244.78 -242,41 33.97 1.52 5958858.32 60020911 7029700225 -149.18952589 2189.22 21.78 172.38 2036.88 2139.70 151.51 345,52 279,51 -276.91 38.04 0.71 5958823,87 600212.65 70.29690798 -149,18849288 2285.25 22.15 170.94 2125.94 2228.76 171.25 361.44 315.43 -312.45 43.26 0,68 5958788.41 600218,33 70.29681090 -149.18845068 2380.78 23.04 173.73 2214.14 2316.96 191.04 418.14 352.12 -348.82 4B.13 1.46 5958752.12 600223.69 70.29671154 -149.18841118 2474.48 21,92 175.66 2300,72 2403.54 209.16 453.98 387.92 -384.48 51,49 1.41 5958716,50 600227.53 70.29661411 -149.1883e401 2568.72 21.55 178,08 2388.26 2491.08 225.64 488.85 422.71 -419.32 53.43 1.07 5958681.70 600229.93 70.29651894 -149.18836829 2664.70 19.86 179.99 2478.04 2580.86 240,51 522.78 45645 -453.24 54.03 1.90 5958647.79 600230.98 70.29912626 -149.18836348 2757.58 18,32 179.93 2565.55 2668.37 253.69 553.93 487.39 -484,39 54.05 0.58 5958616.65 600231.41 70.29634117 -149.18836331 2853.69 1912. 179.09 2956.30 2759.12 267.31 585.56 518.87 516.02 54.32 0.36 5958585.03 600232.10 70.29625475 -149.18836113 2949.00 18.68 178.52 2746.47 2849.29 280.93 616.44 549.64 546.89 54.96 0.50 5958554.17 600233.16 70.29617043 -149.18835594 3042.50 17.71 178.35 2835.29 2938.11 29,199 645.63 $78.76 -576.07 55.76 1.04 5958525.01 600234.34 70.29609070 -14218834949 3337.12 1930 17(;,31 Z924.97 302Z,Z4 308.): 6Z5.9Z 609.OZ -606.37 5Z.25 2.29 5958494.13 600236.74 70.2960OZ91 -149.18833737 3452.84 19.55 166,34 3222.79 3325,61 360.97 760.60 713.59 -710.44 67.00 3,87 5956390.81 600247.38 70.29572361 -149.18825843 3547.54 18.93 157.67 3312.22 3415.04 382.17 81176 744.01 -740.05 76.58 3,08 5958361.33 600257.35 70.29564271 -149.18818087 3643.44 18.31 146.04 3403.12 3505.94 406,41 842.29 772.41 -767.06 98.74 3.66 5958334.51 600271.86 70.29556893 -149.18806628 Drilling Office 2.6.1166.0 Prudhoe Bay Unit - WOA1Z-PAD1Z-681Z-68PB11Z-68P81 812612013 10:29 AM Page 1 of 3 mo Incl Arun True TVDSS TVD VSEC AND Closure NS EW DLS Northing Casting Latitude Longitude Comm mn ( 1) (H) fR) IR) IR) On (ft) (RI ('HOOR1 IRUS) (ftUS) _ (I 19 (R) 373820 17.06 135.81 3493.43 3596.25 432.06 871.00 79693 789.50 100.57 3.77 5958312 32 60029000 70 29550764 -149.18792187 3833.64 18.70 127.76 3584.27 368709 460.07 90026 819.36 -808-91 13043 3.10 5958293.20 600312.11 70.29545461 -149.16774490 392794 20.93 121.39 367299 3775.61 491.56 93219 841.67 -826.94 156.77 3.29 5958275.52 600338.68 7029540534 -149.18753168 4023.16 2236 114.64 376151 3864.33 526.58 967.28 864.00 -843.36 187.76 3-01 5958259.53 600369.88 70.29536049 -149.18728080 4117.35 24.95 109.92 384779 3950.61 564.30 1005.05 886.05 -857.60 222.73 3.40 5958245.75 600405.04 70.29532158 -14918699767 4211.91 27.34 1(5.10 3932.67 4035.49 605.56 1046.69 90876 -870.05 262.45 338 5958233.83 600444.92 70.29528755 -149.18667605 4307.05 29.47 99.54 4016.37 4119 19 649.65 1091_92 931.54 -879.63 306.64 3.57 5956224.85 600489.23 70.29526140 -149.18631832 4002.18 30.47 92.44 4096.81 4201.63 694.50 1139.40 952.68 -884.53 353.83 3.87 5958220.57 60053647 70.29524799 -149.18593626 4496.56 30.72 86.51 4180.07 4282.89 737.79 1187.40 971.11 -894.08 401.81 3.21 5958221.66 600584.44 70.29524921 -14918554779 4591.41 31.39 83.72 4281.32 4364.14 780.20 1236.32 989.55 -879.91 45055 1.67 595822649 600633.11 7029526061 -149.18515320 4685.71 29.25 81.97 4342.72 4445.54 620.51 1283.92 1005.81 -874.00 497.78 2.45 5958233.02 600680.26 70.29527674 -149.18477081 478193 28.28 81.85 4427.07 4529.89 859.30 1330.23 1023.75 -867.49 543.62 1.01 5958240.15 600726,00 70.29529453 -149.18439967 4075.99 26.88 06.29 4509.68 4612.50 89788 1375,21 1044.35 -862.86 588.35 2.35 5958246.37 600770 66 70.29530716 -149.18403753 4971.48 29.48 86.54 459305 4695.87 938.77 1421.76 1068.86 -859.95 634.81 0.64 5958248.90 60081708 70.29531510 -149.18366133 5067.10 2821 86.07 4676.80 4779.62 979.23 1467,89 109452 -856.98 680.85 135 5958252.48 600863.07 70.29532320 -149.18328863 5161.22 26.44 85.41 4760.42 4863.24 1016.93 1511.10 111938 -853.78 723.93 1.91 5958256-26 600906.10 70.29533194 -149.19293982 5256-49 26.58 88.54 4845.67 4948.49 1054.45 1553.61 1145.62 -851.54 766.38 147 5958259.06 60094852 70.29533805 -149.18259612 5340.14 26.34 87.40 4928.62 5031.44 1091.23 1594.89 117256 -650.07 807.64 0.61 5958261.07 600989.74 70.29534203 -149.18226211 544547 2871 85.95 5014.04 5116.86 1130.40 1639.40 1201.76 .84747 852.07 2.56 5958264.27 601034.14 70.29534913 -149.18190236 554043 2879 85.88 509729 5200.11 1170.31 1685.08 1232.25 444.22 897.63 0.09 5958268.13 601079.64 70.29535800 -149.18153350 5635.87 28-75 85.43 5180.95 5283.77 1210.35 1731.01 1263.69 -84074 943.43 013 5958272.22 601125.39 70.29536749 -149.18116267 5731.20 28.73 83.79 5264.54 5367.36 1249.89 1776.85 1295.33 -836.43 989.07 0.83 5958277.13 601170.96 70.29537924 -149.18079322 5825.71 28.32 82.42 5347.58 545040 1288.21 1821.98 1326.45 -83102 1033.87 0.82 5958283.14 601215.68 70.29539401 -149.16043048 5920.51 27.99 85.10 5431.17 5533.99 1326.44 1866.71 1358.42 -826.15 1078.33 1-38 5958288.60 601260.06 70.29540729 -149.18007055 6015.12 27.19 83.35 5515.02 5617.84 1364.09 1910.52 1390.67 -821.75 1121.92 1.20 5958293.58 601301.59 70.29541929 -149.17971761 6108.64 29.01 83.84 559751 5700.33 1401.69 1954.57 1423.40 -816.84 1165.69 1.96 5958299.07 601347.29 70.29543269 -149.17936321 6203.80 28.71 83.00 5680.68 5783.50 1440,73 200040 145793 -811.59 1211.22 0.53 5958304.93 601392.74 70.29544701 -149.17899457 6298.46 28.94 86.85 5763 79 5866.61 1480.30 2046.12 1493.85 -807.55 1256.76 1.97 5958309.57 601438.21 7029545602 -149.17862591 639314 28.07 8842 5646.99 5949.81 1520.06 2091.31 1530.59 -804.90 1301.86 0.94 5958312.82 601483.28 70.29546524 -149.17826071 6488.02 27.34 85.79 5930.99 6033.81 1558.68 2135.42 1566.66 -801.91 1345.87 0.83 5958316.40 60152724 70.29547340 -14917790440 6582.85 26.53 87.63 6014.77 6117.59 1597.80 2179.84 1603.66 -799.30 139022 1.55 5958319.53 601571,54 70.29548030 -149.17754535 6677.30 26.97 8107 6098.36 6201.18 1636.75 2223.82 1840.90 -797.35 1434.15 1.67 5958322.14 601615.44 70.29548582 -149.17718969 677318 2903 89.17 6183.10 6285.92 1676.95 2268.87 1678.71 -795.90 147917 2.38 5950324.19 601660.44 70.29548975 -149.17682513 6868.66 28.52 8845 626670 6369.52 1718.15 2314.78 1719.83 -794.95 1525.08 0.65 5958325 75 601706.32 70.29549233 -149.17645350 6963.56 29.12 88.16 6319.85 6452.67 1759.02 2360.53 1759.89 -793.59 1570.80 0.65 5958327.71 601752.02 70.29549600 -IC) lTBOB326 7058.57 28.12 87.32 6433.25 6536.07 1799.48 2406,04 1799,81 -791.80 1616.28 1.13 5958330.11 601797.46 70.29550086 -149.17571511 7153.33 2788 8245 6516.93 6619.75 1837.93 2450.50 1837.97 -78785 1660.55 2.43 5958334.65 601841.68 70.29551164 -14917535663 7247.48 28.97 84.48 6599.73 6702.55 1876.13 2495.32 1876.16 -782.76 1705.07 1 55 5958340.33 601886.12 70.29552551 -149.17499618 7343.80 29.17 84.86 6683.74 6786.56 1916.44 2642.02 1916.76 -77842 175157 0.29 595834529 601932.55 70.29553733 -149,17461969 7437.68 29.45 65.89 6765.78 6868.60 1956.48 2588.07 1957.32 -774.71 1797.48 0.61 5958349.61 601978.40 70.29554744 -149.17424803 7533.20 3032 85.80 6848.60 6951.42 1998.04 2635.67 1999.67 -771.26 1844.95 0.91 5958353.69 602025.81 70.29555683 -149.17386371 7626.91 29.58 85.61 6929.79 7032.61 2038-84 2682.45 204147 -76776 1891.60 0.80 5958357.82 602072.41 70.29556637 -149.17348599 7721.95 3111 87.38 7011.81 7114,63 2081 04 2730.46 208488 -764.64 1939.52 1,86 5958361.37 602120.28 70.29557431 -149.17309801 7817.60 3127 87.03 7093.63 7196.45 2124.86 2779.99 2130.12 -762.43 1988.99 0.25 5958364 45 602169 72 7019558088 -149.17269743 7912.30 3077 86.68 7174.79 7277.61 2167.89 282880 2174.75 -759.75 2037.72 0.56 5958367 77 60221840 70.29558815 -149.17230291 8006.80 33.51 87.98 7254.80 7357.62 2212.42 2879.06 2221.08 -75743 2087.94 2.99 5958370.76 602268.68 70.29559445 -149.17189637 8100.15 3889 92.65 7332.48 7435.30 2259.45 2930.84 2269.90 -75773 2139.69 2.80 5958371.16 602320.33 70.29559361 -149.17147731 8195-68 8290.80 6385.14 8480.00 8574.50 866937 876419 8859.41 895422 9049.09 9343.71 9555.18 9635.53 7- 9702.00, 34.46 94.56 7411.51 7514.33 2309.41 2984.50 2321.55 -761.11 2193.24 1.27 5958368.49 602373.91 7029558433 -149.17104377 33.82 93.03 7490.24 7593.06 235931 3037.88 237317 -765.01 2246,48 0.80 5958365.29 602427.19 70.29557361 -149.17061275 3321 93.59 7568,90 767172 2407.85 3089.97 2423.50 -768.38 2298.46 0.66 5958362.62 602479.21 70.29556436 -149.17019190 35.36 93.23 7647.27 7750,09 2457.53 3143.40 2475.13 471.56 235180 228 5958360.15 602532.58 TO -29555564 -149.16976007 35.31 92.72 7724.36 7827.18 2508.20 3198.05 2527.92 -77440 2406.38 0.32 5958358.05 602587.19 7029554784 -149,16931818 35.09 92,04 7801.88 7904.70 2558.67 3252.74 2580.66 -776.67 2461.02 047 5958356.50 602641.85 70.29554159 -149.16887582 34.82 90.57 7879.59 7982.41 2608 41 3307.06 2632.87 -777.91 2515.32 0.93 5958355.99 602696.16 70.29553616 -149 1SB43618 34.41 89.52 7957.97 8060.79 2657.46 3361.15 2684.61 -777.95 2569.42 0.76 5958356.66 60275D.24 70.29553798 -149.16799822 33.93 88.80 8036.41 813923 2705.38 3414.40 2735.39 -777.17 2622.66 0.66 5958358.15 602803.47 70.29554006 -149.16756714 33.85 91-56 8115.17 8217.99 2753.39 3467.30 2786.18 -777.34 2675.55 1.62 5958358.69 602856.35 70.29553956 -149.16713896 33.66 90.35 8384.44 6392.26 2804 33 3$19.07 38315.15 -7&821 2Z2Z.31 1.64 5958358.51 602908.11 70,29553217. -14916621992 3523 90.36 8533.06 8635.90 3013.94 3752.55 3062 34 -70224 2960.75 1.26 5958357.59 603141.66 70.29552587 -149.16482990 34,45 90.05 8599.02 8701.84 305561 3796.45 3106.78 -782,41 3006.65 1.00 595835804 603187.46 70.29552537 -149.16445826 34.52 91.38 8653.81 8756.63 3089.91 3836.09 3143.33 -782.67 3044.28 1.13 5958358.07 603225.09 70.29552405 -149.16415359 Drilling Office 2.6,1166.0 Prudhoe Bay Unit - WOA\Z-PAD\Z-681Z-68PB1\Z-68PB1 6/26/2013 10:29 AM Page 2 of 3 MD Incl Azlm True TVDSS TVD VSEC AHD Closure NS EW DLS Northing Easing Latitude Longitude Comments (ft) 1'I (°) III) III) (ft) (II) (it) (ft) (f1) (-1100ft) (ftu3) IROS) (°) I'1 9714.2834.54 Act Stns 91.62 8663.93 8766.75 3096.30 3843.05 3150.12 -783.06 3051.24 1.13 5958357.98 603232.05 70.29552354 -W.164097253746.59 4.500 36.87 92,28 8690.16 8792.98 3113.64 3861.90 3168.53 -783.70 3070.08 7.31 5958357.59 603250.89 70.29552176 -149.16394473 9778.16 37.76 98.57 8715.28 8818.10 3131.66 3881.03 3167.42 -785,52 3069.11 12.39 5958356.02 603269.95 70.29551677 -149.16379062 9809.78 3^.04 102.72 8740.06 8842,88 3150.66 3900.66 3207,02 -769.16 3108.41 9.10 5958352.64 603289.29 70.29550682 -149.16363445 9842.18 41.71 109.20 8764.76 8667,58 3171.39 3921.64 3227.97 -794.95 3128.55 15.35 5958347,12 603309.50 70.29549096 -149,16347137 9873.33 45.45 109.66 0787.32 8890.14 3192.76 3943.11 3249.35 -002.10 3148.80 1205. 5358340.24 603329.84 70.29547142 -149.16330747 9904.20 49.54 110,19 6808.17 8910.99 3215.42 3965.86 3271.99 -809.85 3170.19 13.31 5958332.77 603351.33 70.29545020 -149.16313432 9933.29 51.72 110.85 8826.62 8929.44 3237.84 3988.35 3294.35 -817.74 3191.25 7.70 5958325,17 603372.49 70.29542864 -149.16296385 9905.77 54.84 111.85 8846.04 8948.86 3263.82 4014.38 33u0.19 -827.22 3215.49 9.92 5958316.01 603396.86 70.29540271 -149.16276761 9998.81 57.55 111.02 E864.42 0967.24 3291.22 4041.83 394744 -837.25 3241.04 8.46 5958306.33 603422.54 70.29537528 -149.16256075 10031.66 60.33 112.60 8881.37 8984.19 3319.31 4069.97 3375.35 -847.71 3267.16 9.41 5958296.22 603448.79 70.29534668 -149.16234932 10064.29 63.29 112,18 6896.76 8999.60 3348.04 4098.72 3403.84 -858.66 3293.75 9.14 5958285.62 603475.52 70,29531673 -149.16213409 10094.88 68.92 113.24 8909.17 9011.99 3375.97 4126.68 3431.51 -869.46 3319.54 18.68 5958275.17 603501.45 70.29520719 -149.16192535 10126.53 75,91 113.93 8918.72 9021.54 3406.11 4156.63 3461.31 -881.52 3347.17 22.18 5958263.47 603529.24 70.29525419 -149,11770168 10150.74 82.86 115.60 8924.65 9027.47 3437.75 4188.47 3492,47 -804.78 3375.90 22.17 5958250.60 603558.14 70.29521794 -149.16146916 10189.63 87.86 118.32 8927,15 9029.97 3468.51 4219.25 3622.56 -908.74 3403.33 18.41 5956237.01 603585.75 70.29517978 -149.10124713 10221.62 9228 120.51 8927,11 9029.93 3300.40 4251.23 355354 -924.44 3431.18 15.42 5958221.68 603613.81 70.29513684 -149.16102165 10252.53 95.19 122.27 8925.10 9027.02 3531.04 4282,07 3563.15 -940.51 3457,51 11.00 5956205.97 603640.35 70.29509202 -149.16000857 10283.65 97.10 123.11 8921.77 9024.59 3561.71 4313.01 3612.67 -957.22 3483,55 670 5958189,61 603666.60 70.29504724 -149.16055781 1031626 98.53 123.54 8917.33 9020,15 3593.67 4345.32 364142 -974.96 3510.54 4.58 5956172.23 603693.03 7029439872 -149.16037933 10347,18 99.02 122.39 8912,62 9015.44 3623.93 4375.88 3672.68 -991,59 3536.18 4.00 5958155.95 603719.66 70.29495326 -149.16017183 10379.20 99.43 122.12 8907.48 9010.30 3655.29 440746 3702.88 -1008.46 3562.91 1.53 5958139,44 603746.63 70.29490715 -149.15995550 10411.71 99.88 123.14 8902.03 9004,85 3687.05 4439.53 3733.57 -1025.74 3589.90 3.39 5958122.52 603773.85 70.29485990 -149.15973705 10442.51 101.02 122.22 0896.45 8999.27 3717.07 4469.82 3762.58 -1042.09 3615.39 4Y3 5958106.51 603799.55 70.29481519 -14915953072 10538.00 101.02 122.22 8878.19 8901.01 33110.05 4563.55 3852.71 -1092,07 3694.69 0.00 5956057.60 603879.50 70.29467856 -149.15888894 Survey Error Model: ISCWSA Rev 0 "' 3-D 95.000% Confklence 2.7955 sigma Survey Program: From MD To EOU Fraq Description (11) III) (II) (II) Hole Size (in) Casing Diameter (in) SurveyTool T Type Borehole l Survey y 0.000 464.000 Act ins 12.250 9.625 GY04CSs Z-68pal 1 mlipa 495.110 3220.760 Act Sins 12.250 9.625 MWD+IFR+MS Z-68PS11 Z -68P61 3262.710 3262.710 Act Stns 8.750 7.000 INC -TREND Z -68P131 IZ-68PB7 3357.720 9635.530 Act Sins 8.750 7.000 MWD -IFR -MS Z-68PB1 1 Z-68PB7 9714.280 9714.280 Act Stns 8.750 7.000 INC+TREND Z-68PBI 1Z-68PB1 9746.580 9908.810 Act Sins 6,125 4.500 MWD+IFR+Li$ Z-68POl/Z-68P61 10031.660 10442.510 Act Sins 6.125 4.500 MWD -IFR -MS Z-68PB11 Z-68PB1 10442,510 10538.000 Act Sins 6.125 4,500 BLIND Z-68PB1 f Z-68PBt Legal Description: Northing (Y) EasUng (X) Surface: 4290.4 FSL 2506.7 FEL S19 Ti IN R12E UM 5959100 i OHL: 3197 FSL 4096 FEL 20 TI IN R12EUM 5958057.600 603879.500 Final Definitive Survey Verified and Signed -off All targets and/or well pos/Non objectives have been achieved. ❑+ Yes ❑ No I have checked to the best of my ability that the following data is correct: p Surface Coordinates O Declination 8 Convergence O GRS Survey Corrections Survey Tool Codes SLB DE: A Client Representative: Date: Drilling Office 2.6.1166.0 Prudhoe Bay Unit - WOA17-PAW-6812-68PB11Z-68PB1 8126/2013 10:29 AM Page 3 of 3 by 0 Z-68PB1 Survey Geodetic Report (Def Survey) t BP • Prudhoe Bay Unit - WOA :tun I Slot: Z -PAD I Slot (SP) TVD Reference Elevation: Z -6B hole: Z-68PB1 Magnetic Declination: 500292349370 ey Name: Z-68PB1 By Onto: August 15, 2013 1 AHD 101311 ERD Ratio: 230.326 * 14563.552 R 16,089 10.605 dinats Reference System: NAD27 Alaska State Plane, Zone 04, US Feet tion Let I Long: N 70' 17'51.59215". W 149' 11'19.68329' tion Grid NIE Y/X: N 5959100.230 f1US. E 600170.920 OUS Grid Convergence Angle: 0.7637' Seals Factor: 0.9999114 tamimberper Vertical Section Admuth: 115.000 ° (Trua North) Vertical Section Origin: 0.000 ft, 0.000 8 TVD Reference Datum: RotaryTable TVD Reference Elevation: 102.820 R above MSL Orovnd Elevation: 55.900 It above MSL Magnetic Declination: 20.085' Total Gravity Field Strength: 1001.9930mgn (9.80665 Based) Total Magnetic Field Strength: 57607.747 nT Magnetic Dip Angle: 80.976' Declination Dab: July 28, 2013 Magnetic Declination Model: BGGM 2012 North Refennco: True North Grid Convergenee Uaed: 0.0000' Total Corr Mag North -True North: 20.0854' Local Coord Referenced To: Well Head SEP 0 6 2013 Comments MD Inel Arlm True TVDSS TVD VSEC AHD Closure NS EW DLS Northing EesUng Latitude Longitude RTE (R) 000 (°) 5.1112 1'1 OAR [It 102 82 (R) 000 (R) 0.00 (ft) 0-00 I(O 0.00 (ft) 0.00 00 Mimi IRUSi IRUSI (1 1 I WRP 46.92 0.00 0.00 -55.90 46,92 0.00 0.00 0.00 0.00 NIA 5959100.23 600170.92 70.29766449 -149.18880091 100,00 0.15 279.71 -2.82 100.00 -0.07 0.07 0.07 000 0.01 0.00 0.00 5959100.23 600170 92 70.29766449 .149.18880097 190.00 0.23 323.42 87.18 190.00 -0.34 0.35 -0.07 028 5959100.24 600170.85 70.29766452 -149.19880147 281.00 0.28 13.29 178.18 281.00 0.34 0.18 -029 0.18 5959100.40 600170.63 70.29766497 -149.18880328 -0.55 0.7,", 0.64 0.54 -0.35 0.24 5959100.76 600170.56 70.29766596 -149.18880375 374.00 464.00 1.01 2.58 13.50 271.17 373.99 -0.75 1.73 1.56 1.56 -0.11 0.78 595910179 600170.79 70.27766874 -149.18880178 495.11 2.59 11.89 361.13 463.95 -1.37 4.60 4.34 4.31 0.50 1.75 5959104.55 600171.38 70.29767626 -149.18879690 587.22 3.17 14.95 22.22 39220 495.02 -1.65 6.00 5.74 5.68 0.82 0.44 5959105.92 600171.67 70.29767999 -149.18879426 682.60 3.79 34.12 484.20 579,40 587.02 682.22 -2.14 10.62 10.31 10.04 2.32 0.74 5959110.30 600173.11 70.29769193 -149.18878211 -1.77 16.39 15.93 15.10 5.09 0.99 5959115.39 600175.81 70.29770572 -149.18075972 774.80 862.12 3.31 43.93 671.43 77425 -0.42 22.09 21.36 19.54 0.64 0.84 5959119.88 600179.30 70,29771785 -149.18873093 957.35 3.16 3.01 55.89 758.81 861 A3 1,63 27.00 25.86 22.70 12.38 0.79 5959123.09 600183.00 70.29772650 -149.18870063 1053.00 3.95 82.45 113.93 853.70 956.52 5.09 32.03 29.84 24.50 17.04 1.50 5959124.95 600187.63 7029773142 -149.18866296 1146.24 5.14 122.78 949.19 1042.13 1052.01 1144.95 10.50 37.70 32.56 23.49 22.54 2.19 5959124.02 600193.14 7029772867 -149.16861842 17.75 45.04 34.70 19.52 28.68 1.84 5959120.13 600199.34 7029771781 -149.18856866 1242,64 1335.38 8.22 152.69 1137.88 1240.70 27.38 58.11 36.74 10.63 35.17 4.17 5959111.33 600205.94 70.29789352 -149.16851616 143022 11.12 14.16 168.09 1229.31 1332.13 38.00 71.60 40.26 -4.02 40.06 4.16 5959096.75 600211.02 7029765351 -149.16847657 1525.47 17.05 176.77 183.11 1321.85 1413.59 1424.67 48.98 92.31 49.17 -24.56 42.60 3.77 5959076/5 600213.84 70.29759740 -149.18845599 1619.52 18.46 163.29 1503.15 1516.41 1605.97 59.70 70.35 117.91 65.73 -50.14 42.50 3.52 5959050.67 600214.08 70.29752751 -149.18845681 146.59 88.76 -78.77 40.89 1.50 5959022.02 800212.86 70.29744928 -149.18846979 1714.25 1811.06 19.68 166.56 1592.69 1695.51 80.95 177.53 116.06 -109.59 38.21 1.71 5958991.16 600210.58 7019736508 -149.18849152 1904.40 19.00 186.76 1684.03 1786.85 91,04 209.59 145.58 -141.44 34.49 0.71 595895928 600207.29 70.29727009 -149.18852162 2000.75 20.75 21.51 182,93 1771.81 1874.63 102.01 241.31 175.95 -173.04 31.86 2.34 5956927.64 600205.08 70.29719174 -149.18854295 2085.28 21.64 179.03 174.15 1861.69 1949.60 1964.51 116.43 276.03 210.14 -207.75 31.59 2.00 5958892.94 600205.28 70.29709694 -149.18854510 2052.42 133.23 310.77 244.78 -24241 33.97 1.52 5958858.32 600208.11 70.29700225 -149.18852589 2189.22 2285.25 21.78 22.15 172.38 170.94 2038.88 2139.70 151.51 345.52 279,51 -276.91 38.04 0.71 5958823.87 600212.65 70.29690798 -149.18849288 2380.78 23.04 173.73 2125.94 2214,14 2228.76 2316.96 171.25 191.04 381,44 315.43 -312.45 43.26 0.66 5958788,41 600218.33 70.29681090 -149.18845068 2474.48 21.92 175.66 2300.72 2403.54 209.16 418.14 35212 -348.82 48.13 1.46 59,58752.12 600223.69 70.29671154 -149.18841118 2568.72 21.55 178.08 2388.26 2491.08 225.64 453.96 387.92 384.48 51.49 1.41 5958716.50 600227.53 70.29661411 -149.18830401 488.85 422.71 -419.32 53.43 1.07 5958691.70 600229.93 70.29651894 -149.18836829 2664.70 2757.59 19.86 19.32 179.99 179.93 2478.04 2580,86 240.51 522.78 456.45 -453.24 54.03 1.90 5958647,79 600230.98 70.29842626 -149.18836348 2853.69 19.12 179.09 2565.55 2956.30 2698.37 2759.12 253.69 563.93 487.39 -484.39 54,05 0.58 5958616.65 800231.41 70.29634117 -149.18836331 2949.00 18.68 178.52 2746.47 2849.29 267.31 280.93 585.56 61644 518.87 516.02 54.32 0.36 5958585.03 600232,10 70.29625475 '149.18036113 3042.50 17.71 178.35 2835.29 2938.11 293,99 645.63 549.64 546.89 54.96 0.50 5958554.17 600233.16 70.29617043 -149.18835594 578.76 -576.07 55.76 1.04 5958525.01 600234.34 70.29609070 -149.18834949 3337-11 19.34 17,,33 2924.97 302Z.Z4 398.75 625.92 609.OZ -BP6.37 52.25 2.24 5958494.73 600236.24 70.29600191 -149.18833737 3452.84 3547.54 19.55 18.93 166.34 157.67 3222.79 3325.61 360.97 780.60 713.59 -710.44 67.00 3.67 5958390.81 600247.38 70.29572361 -149.18825843 3643.44 18.31 146.64 3312.22 3403.12 3415.04 3505.94 382.17 811.76 744.01 -740.05 76.58 3.08 5958361.33 600257.35 70.29564271 -149.18818087 406.41 842.29 772.41 -767.06 90.74 3.66 5958334.51 600271.56 70.29556893 -149.18806628 Drilling Office 2.6.1166.0 Prudhoe Bay Unit - WOA\Z-PAD\Z-68\Z-68PB1\Z-68PS1 8126/2013 10:29 AM Page 1 of 3 MD Inel Ar)m Trus TVD9S TVD VSEC AHD Closure NS EW DLS Northing Easting Latitude Longitude Commardn 1.1 () (ftl IR) Ift) (ft) (ft) Ift) (ft) ('f100R) IROS) (RUS) _ Cl (I (I'll 3738,20 17.06 136.81 3493Y3 3596.25 432.06871.00 2298.46 796-93 769.50 108.57 3.77 5958712 32 60029000 7D.29550764 14918792187 3833.64 18.70 127.76 3584.27 3687.09 460.07 900.26 819.36 -808.91 130.43 3.10 5958293.20 600312.11 7029545461 -149.18774490 2508.20 20.93 121.39 3672.99 3775.81 491.56 93219 641.67 -826.94 156.77 3.29 595827552 600338.68 7029540534 -149.18753168 392794 4023.16 22.36 114.84 3761.51 3864.33 526.58 967.28 864.00 -643.36 18778 3.01 5958259.53 600369.88 70.29536049 -149.18728080 4117.35 24.95 109.92 3847.79 3950.61 564.30 1005.05 886.05 -857.60 222.73 3.40 5958245.75 600405.04 70.29532158 -149.18699767 4211.91 27.34 10510 3932.67 4035.49 605.56 1046.69 908.76 -870.05 262,45 3.38 5958233.83 60044412 70.29528755 -149.18667605 43D7.05 29.47 99.54 4016.37 4119.19 649.65 1091_92 931.54 -879-63 306.64 3.57 5958224.85 600489.23 70.29526140 -149.18631832 4402.18 30,47 92.44 4098.81 4201.63 694.50 1139AD 952.68 -884.53 353.83 3.87 5958220.57 600536.47 70.29524799 -149.18593626 449656 30.72 86.51 4180.07 4282.89 737.79 1187.40 971,11 -884.08 401.81 3.21 5958221.66 600584.44 70.29524921 -149.18554779 4591.41 3139 83.72 4261.32 4364.14 780.20 1236.32 988.55 -879.91 450.55 1.67 5958226 49 600633 11 70.29526061 -149.18515320 4685.71 29.25 81.97 4342.72 4445-54 820.51 1283.92 1005.81 -874.00 49778 2.46 5958233.02 600680.26 7029527674 -149.18477081 4781.93 28.28 81.85 4427.07 4529.89 859.30 1330,23 1023.75 -867.49 543.62 1.01 5958240.15 600726,00 70.29529453 -149.18439967 4875.99 28.88 86.29 4509.68 4612.60 897.88 1375.21 1044.35 -862.86 588.35 2.35 5958245.37 600770.66 70.29530716 -149.18403753 4971.49 29.48 86.54 4593.05 4695.87 938.77 1421.76 1068,88 -859.95 634.81 0.64 5958248.90 600817.08 70.29531510 -149.16366133 5067.10 2821 86.07 4676.80 4779.62 979.23 146789 1094.52 -856.98 680.85 1.35 5958252.48 600863.07 70.29532320 -149.18328863 5161.22 26.44 85.41 4760.42 4863.24 1016.93 1511.10 1119.30 -853-78 723.93 1.91 59.5+8256.26 600906.10 70.29533194 -149.18293982 5256.49 26.56 88.54 4845.67 4948.49 1054.45 1553.61 1145.62 -851.54 766.38 1.47 5958259.06 600948.52 7029533805 -149.18259612 5349 14 26.34 8T40 4928.62 5031.44 109123 1594.89 1172.56 -85007 807.64 0.61 5958261.07 600989.74 70.29534203 .149 18226211 5445.47 28.71 85.95 5014.04 5116.86 1130.40 1639.40 1201.76 -647,47 852.07 2.56 5958264.27 601034.14 70.29534913 -149.18190236 5540.43 28.79 85.88 509729 5200.11 1170.31 1685.08 1232.25 -844.22 897,63 0.09 595826813 601079.64 70.29535800 -149.18153350 5635.87 28.75 85.43 5180.95 5283.77 1210.35 1731.01 1263.69 .640.74 943.43 033 5958272.22 601125.39 70.29636749 -149.18116267 5731.20 28-T3 93.79 5264.54 5367.36 1249.89 1776.85 1295.33 -836.43 989-07 0.83 5958277.13 601170.96 70.29537924 -149.16079322 5825.71 28.32 82.42 5347.58 545040 1288.21 1821.98 1326.45 -83102 1033.87 0.82 5958283.14 601215.68 70.29539401 -149.18043048 5920.51 27.99 85.10 5431.17 5533.99 1326.44 1866.71 1358.42 -826.15 1078.33 1.38 5958288.60 601260,06 70.29546729 -149.18007055 6015.12 27.19 83.35 5515.02 5617.84 1364.09 1910.52 1390.67 -82135 1121.92 1.20 5958293.58 601304,59 70.29541929 -149.17971761 6108.64 29.01 B3.84 559751 5700.33 1401.69 1954.57 1423.40 -816.84 1165.69 1.96 5958299.07 601347.29 70.29543269 -149.17936321 6203.60 28.71 83.00 5660.68 5783.50 1440.73 200040 145799 -811.59 1211.22 0.53 5958304.93 601392.74 70.29544701 -149.17899457 6298.46 28.94 86.85 5763.79 5666.61 1480.30 204612 1493.85 -807.55 1256.76 1-97 5958309.57 661438.21 70.29545802 -149.17862591 639314 28.07 86.42 5846.99 5949.81 1520.06 2091.31 1530.59 -804.90 1301.86 0.94 5958312.82 601483.28 70.29546524 -149.17826071 6488.02 27.34 85.19 5930.99 6033.81 1556.68 2135,12 1566.66 -801.91 1345.87 0.63 5958316 40 601527.24 70 29547340 -149 17790440 6582.85 28.53 8763 6014,77 6117.59 1597.80 2179.84 1803.66 -799.38 139022 1,55 595831953 60167154 70.29548030 -14917754535 6677.30 26.97 87,07 6098.36 6201.18 1636.75 2223.82 1640.90 -797.35 1434.15 1.67 5958322.14 601615.44 70.29548582 -149.17718969 6773.28 29.03 89.17 6183.10 6285.92 1676.95 2268.87 1679.71 -795.90 147917 2.38 5958324.19 601660.44 7039548975 -149.17682513 6868.66 28.52 88.45 626670 6369.52 1716.15 2314.78 1719.83 -794.95 1525.08 0,65 5958325.75 601706.32 70.29549233 -149.17645350 6963.56 29.12 88.16 6349.85 6452.67 1759.02 2360.53 1759.89 -793.59 1570.80 0.65 5958327.71 601752.02 70.29549600 -149.1 T608328 7058.57 28.12 87.32 6433.25 6536.07 1799.48 2406.04 1799.81 -791.80 1616.28 1.13 5956330.11 601797 46 70.29550086 -149.17571511 715333 27.88 82.45 6516.93 6619.75 1837.93 2450.50 183797 -787.85 1660.55 243 5958334.65 601841.68 70.29551164 -149.17535663 7247.48 28.97 84.48 6599.73 6702.55 1876.13 2495.32 1876.16 -782.76 1705.07 1.55 5958340.33 601886.12 70.29552551 -149.17499618 7343.80 29.17 8486 6683.74 6786.56 1916.44 2542.02 1916.76 -77842 175157 0.28 5958345.29 601932.55 70.29553733 -149.17461969 7437.68 29,45 85.89 6765.78 6868.60 1956,48 258807 1957.32 -77471 1797.48 0.61 5958349.61 601978.40 70.29554744 -149.17424803 7533.20 30.32 85.80 6848.60 6951.42 1998.04 2635.67 1999.67 -771.26 1844.95 0.91 5958353.69 602025.81 70.29555683 -149.17386371 7626.91 2958 85.61 6929.79 7032.61 203884 2682,45 2041.47 .76776 1891.60 0.80 5958357.82 602072.41 70.29556637 -149.17348599 7721.95 31.11 87.38 7011.81 7114,63 208104 2730.46 2084.88 -764.84 1939.52 1.86 5958361.37 602120.28 70.29557431 -149.17309801 781760 31.27 87.03 7093.63 7196.45 2124.86 2779.99 2130.12 -762.43 1988.99 0.25 5958364 45 602169.72 70.29558088 -149.17269743 7912.30 30.77 86.68 717479 7277,61 2167.89 2828,80 2174.75 -759.75 2037.72 056 595836777 602218.40 70.29568815 -149.17230291 8006.80 33.51 8796 7254.80 7357,62 2212.42 2879-06 2221.08 -757,43 2087.94 2.99 5958370.76 602268.58 7029559445 -149.17189637 8100.15 33.89 92.65 7332.48 7435.30 2259.45 2930.84 2269.90 -75773 2139.69 2.80 5958371.16 602320.33 70.29559361 -149 17147731 8195.68 8290.80 6365.14 8480-00 8574.50 866937 8764,18 8859.41 8954-22 9049. D9 9513.71 9555.18 9635.53 r 9702.00 34,46 94.56 7411.51 7514.33 2309.41 2984.50 2321.55 -761.11 219324 127 5958368.49 602373.91 70.29558433 -149.17104377 33.82 93.83 7490.24 7593.06 235931 3037.88 237317 -76501 2246.40 0.80 5958365.29 602427.19 70.29557361 -149.17061275 3321 93.59 7568.90 7671.72 2407.85 3089.97 2423.50 -76838 2298.46 0.66 5958362.62 602479.21 70.29556436 -149.17019100 35.36 93.23 7647.27 773009 2457.53 3143,40 2475.13 -771.56 2351.80 2.28 5956360,15 602532.58 70.29555564 -149.16976007 35.31 92.72 7724.36 7827.18 2508.20 3198.05 252792 -774.40 2406.38 0.32 5958358.05 602587.19 7029554784 -149.16931818 35.09 92.04 7801.88 7904.70 2558.67 325274 2580.66 -776.67 2461.02 0.47 5958356.50 602641.85 70.29554159 449.16887582 34.82 90.57 7879.59 7982.41 2608.41 3307.06 2632.87 -77791 2515.32 0.93 5958355.99 602696.16 70.29553816 -14916843618 34.41 89.52 7957.97 8060.79 2657.46 3361.15 2684.61 -777.95 2569.42 0.76 5958356.66 602730.24 70.29553798 -149.16799822 33.93 88.80 8036.41 8139.23 2705.38 3414.40 2735.39 -777.17 2622.66 0.66 5958358.15 60280347 70.29554006 -149.16756714 33.85 91.56 8115.17 0217.99 2753.39 3467.30 2786.18 -777,34 2675.55 1.62 5958358.69 602856.35 70.29553956 -149.16713896 33.65 90.35 8189.44 829Z.26 2809.8; 3539-07 2836.16 -7Z8.21 2Z2Z.31 1.64 5958350.51 602908.11 70.29553712 -149.1667196Z 35.23 90.36 8533.08 8635.90 3013.94 3752.55 3062 34 -78224 2960.75 1.26 5958357.59 803141.56 70.29552587 -149.16482990 34.45 90.05 8599.02 8701.84 305561 3798.45 3106.78 -782.41 3006.65 1.00 595836804 60318746 70.29552537 -149.16445826 34,52 91.36 8653.81 8756.63 3089.91 383609 3143.33 -782.87 3044.28 1.t3 5958358.07 603225.09 70.29552405 449. f605359 Drilling Office 2.6.1166.0 Prudhoe Bay Unit- WOA\Z-PAD\Z-681Z-68PB11Z-68PB1 8126!2013 10:29 AM Page 2 of 3 MD [not Azim True TVDSS TVD VSEC AHD Closure NS EW DLS Northing Eating latitude Longitude Comments (R) ('1 PI (R) IR) (R) (R) (R) (it) (R) rNODR) (flus) (RIPS) (1) ('1 9714.28 34.54 91.62 8663.93 8766.75 3096.30 3843.05 3150.12 -783.06 3051.24 1.13 5958357.98 603232.05 70.29552354 -140.16409725 3746.59 36.87 92.28 8690.16 8792.98 3113-64 3861.90 316853 -783.70 3070.08 7.31 5958357.59 603250.89 70.29552176 -149.16394473 9778.16 37.76 98.57 8715.28 8818.10 1131.66 3861.03 3187.42 -78552 3089.11 12.39 5958356.02 603269.95 70.29561677 -149.16379062 9809.78 39.04 102.72 8740.06 8842.88 3150.68 3900.66 3207,02 -769.16 3108.41 9.10 5958352.64 603289.29 70.29550682 -149.16363445 9842.18 41.71 109.20 8764.76 8867.58 3171.39 3921.64 3227.97 -794.95 3128.55 15.35 5958347.12 603309.50 70.29549096 -149.16347137 9873.33 45.45 109.66 8787.32 8890.14 3192.76 3943.11 3249.35 -802.10 3148.80 12.05 5358340.24 603329.84 70.29547142 -149.16330747 9904.20 49.54 110.19 8808.17 8910.99 3215.42 3965.86 3271.99 -809.85 3170.19 13.31 5958332.77 603351.33 70.29545010 -149.16313432 9933.29 51.72 110.85 8826.62 8929.44 3237.84 3988.35 3294.35 -817.74 3191.25 7.70 5958325.17 603372.49 70.29542864 -149.16296385 99115.77 54.84 111.85 8846.04 8948.86 3263.82 4014.38 3320.19 -827.22 3215.49 9.92 5958316.01 603396.86 70.29540271 -149.16276761 9998.81 5755 111.02 6864.42 8967.24 3291.22 4041.83 3247.44 -837.25 3241.04 8.46 5958306.33 603422.54 70.29537528 -149.16256075 10031,66 60.33 112.60 6881.37 6984.19 3319.31 4069.97 3375.15 -847.71 3267.16 9.41 595829622 60344879 70.29534668 -149.16234932 10064.29 63.29 112.18 8896.78 8999-60 3348.04 4098.72 3403.84 -858.66 3293.75 9.14 5958285.62 603475.52 70.29531673 -149.16213409 10094.88 68.92 11324 8909.17 9011.99 3375.97 4176.68 3431.51 -86946 3319.54 18.68 5958275.17 603501.45 70.29520719 -149.16192535 10126.53 75.91 113.93 8918.72 9021.54 3406.11 4156.03 3461.31 -881.52 3347.17 22.18 5958263.47 603529.24 70.29525419 -149.10170168 10158.74 82,86 115.60 8924.65 9027.47 3437.75 4188.47 3492.47 -994.78 3375.90 22.17 5958250.60 603558.14 70.29521794 •149.16146916 10189.63 87.86 118.32 8927,15 9029.97 3468.51 4219.25 3622.56 -908.74 3403.33 18.41 5958237.01 603585.75 70.29517978 -149.16124713 10221.62 92.28 120.51 8927.11 9029.93 3500.40 4251.23 3553.54 -924.44 3431.18 15.42 5958221.68 603613.81 70.29513684 -149.16102165 10252.53 95.19 122.27 8925.10 9027.92 3531.04 4282.07 3583.15 -940.51 3457.51 11.00 5958205.97 603640.35 70.:.9509202 -149.16080857 10283.65 97.10 123.11 8921.77 9024.59 3561.71 4313.01 3612.67 -957.22 3483.55 6.70 5958189.61 603666.60 70.29504724 -149.16053781 10316.26 98.53 123.54 8917.33 9020.15 3593.67 4345.32 364142 -974.96 3510.54 4.58 5958172.23 603693.83 7029479872 -149.16037933 10347.18 99.02 122.39 8912.62 9015A4 3623.93 4375.88 3672.58 -991.59 3536.18 4.00 5958155.95 603719.65 70.29495326 -149.16017183 10373.20 99.43 122.12 8907.48 9010.30 3655.29 440748 3702.88 -1008.46 3562.91 1.53 5958139.44 603746.63 70.29490715 -149.15995550 10411.71 99.88 123.14 8902.03 9004.85 3687.05 4439.53 3733.57 -1025.74 3589.90 3.39 5958122.52 603773.85 70.29485990 -149.15973705 10442.51 101.02 122.22 8896.45 8999.27 3717.07 4469.82 37F.2.58 -1042.09 3615.39 4.73 5958106.51 603799.55 70.29481519 -149.15953072 10536.00 101.02 122.22 8878.19 8981.01 3810.05 4563.55 3852.71 -1092.07 3694.63 0.00 5958057.60 603879.50 70.29467856 -149.15888894 Survey Error Model: ISCWSA Rev 0 -" 343 95.000% Confdence 2.7955 sigma Survey Program: Description MD From MD MD To EOU Freq Hol. Size Casing Diameter Survey Tool Type Borehole lSurvey (it) (R) (in) tin) 0.000 464.000 Act Sins 12.250 9.625 GYLGCSS Z_68pa 11Z.68PBI 495.110 3220.760 Act Stns 12.250 9.625 MWD -IFR -MS Z -68P811 Z�681`61 3252.710 3262.710 Act Stns 8.750 7.000 INC -TREND Z-68PBI IZ-68P61 3357,720 9635.530 Act Stn. 8.750 7-000 MWD+IFR+MS Z-68PSI IZ-68PB1 9714.280 9714.280 Act Stns 8.750 7.000 INC -TREND Z-68PS1 I Z-68PB1 9746.580 9998.810 Act Stns 6.125 4.500 MWD+IFR+I.IS Z-68PB1 Iz-68PB1 10031.660 10442.510 Act Stns 6.125 4.500 MWD -IFR -MS Z-68PB1 IZ-68PB1 10442.510 10538.000 Act Stns 6.125 4.500 BLIND Z-68PB1 I Z-68PS1 Legal Description: Northing (y) EasOng (X) Surface: 4290.4 FSL 2506.7 FEL S19 T1 IN R12E UM 595910023b BHL 3197 FSL 4096 FEL 20 TI IN R12EUM 5958057,600 603879.500 SLB DE: Client Representative: Date: Drilling Office 2.6.1166.0 Prudhoe Bay Unit - W OA1Z-PAD1Z-6812-68PB11Z-68PB1 8/26/2013 10:29 AM Page 3 of 3 Final Definitive Survey Verified and Signed -off AM targets and for well position objectives have been achieved. 2 yes ❑ No I he" checked to the best of my ability that the following data Is correct: Surface CoordinatesDecl D QRS Survey Corrections ORB atlb Convergenee�//i;`" Survey Tod Codes SLB DE: Client Representative: Date: Drilling Office 2.6.1166.0 Prudhoe Bay Unit - W OA1Z-PAD1Z-6812-68PB11Z-68PB1 8/26/2013 10:29 AM Page 3 of 3 z\3-C9f3 2305a 0 Schlumhepgep DATA LOGGED J L •� rj 9/gd /2013 V V LU M K BENDER Drilling & Measurements "1 MWD/LWD Log Product Delivery Customer BPXA Dispatched To: Makana Vender Well No Z-68 Date Dispatched: 27 -Aug -13 Installation/Rig Parker 273 Dispatched By: Ian Carmichael Data No Of Prints No of CDs Surveys 2 i Logs: VISION Service MD tin 509 to 10233 1 PDF included VISION Service TVD tin 509 to 10233 1 PDF included VISION Service MD Sin 509 to 10233 1 PDF included VISION Service TVD Sin 509 to 10233 1 PDF included LAS Digital Data Received By: Ing�� Please sign and return to: Hector Fcneto Drilling &Measurements DSM 2525 Cambell Street, Suite 400 Anchorage, Alaska 99501(a hechetoDslb.com Fax: 907-561-8317 LWD Log Delivery V1.0, 01/22/2010 by Z-68 Survey Geodetic Report (Det Survey) rt: BP Van: Seetlon origin: Prudhoe Bey Unit - WOA .tura I Slot: Z -PAD 1 Slot (SP) TVD Reference Elevation: Z-68 hole: Z-68 Magnetic Declination: 500292349300 ey Name: Z-61) ey Data: August 19, 2013 AHD I DDI f ERD Ratio: 226.076' 14251.314 fl 16.035 10.469 ddnate Reference System: NAD27 Alaska State Plane. Zone D4. US Feet tion Let I Long: N 70' 17'51.59215', W 149' 11' 19.66329' Mon Grid NIE YIX: N 5959100.230 ftUS, E 600170.920 RUS Grid Convergence Angie: 0.7637 Sortie Factor: 0.9999114 tcmmnm w Vertical Sectlan Azimuth: 133.000' (True North) Van: Seetlon origin: 0.000 6, 0.0(10 h TVD Reference Datum: Rotary Table TVD Reference Elevation: 102.820 R above MSL Ground Elevation: 55.900 R above MSL Magnetic Declination: 20 049 ° Total Gravity Field Strength: 1001.9930mgn (9.80665 Based) Total Magnetic Field Strength: 57606.931 nT Magnetic Dip Angle: 80.977' Declination Data: August 20, 2013 Magnetic Deellnallon Model: SGGM 2012 North Referance: True North Grid Convergence Used: 0.0000' Total Corr Mag Nndh->Trus North: 20.0493' Looal Coord Referenced To: Well Head SEP 0 6 2013 Comments MD Ind Ailrrr True TVOSS TVD VSEL AHD Closure Na EW OLS Northing Easting Latitude Longitude RTE (ftl 0.D0 f7 0.00 f•1 0 (R -102L84 fftl D (RI (RI IRI fftS IR) 1'I100R) (RUST (RUST (1 ( 1 WRP 48.92 0.00 0.00 -55.90 , 46.92 0.00 0.00 0.00 0.00 1,%! 0.00 NIA 5959100.23 800170.92 70.20766449 -149.18880091 100,00 0.15 279.71 -2.82 100.00 -0.06 0.07 0,00 0.07 0.00 0,00 0.00 5959100.23 600170.92 70.29766449 -149.18600091 190.00 023 323.42 87.18 190,00 -0.33 0.35 0.34 0.01 -0.07 0.28 5P59100.24 800170.85 70.29766452 -149.18880147 281.00 0.28 13.29 178.18 281.00 -D.62 0.73 0.64 0.16 -0.29 0.18 5959100.40 600170.63 70.29766417 -149.18800328 0.54 -0.35 0.24 5959100.76 600170.56 70.29766596 -149.18880375 370.00 464.00 1.0113-50 2.511 11.89 271.17 373.99 -1.14 1,76 1,56 1.56 .0.11 0.78 5959101.79 600170.79 70.29766874 -149,16880178 495.11 2.69 1 4. 95 361.13 392.20 463.95 495.02 -2.50 4.60 4.34 4.31 0.50 1.75 SP59104.55 600171.36 70.29767626 -149.18879690 58722 3.17 22.22 484.20 587.02 -3.27 3.15 6.00 10.62 5.74 5.68 0.82 0.44 5959105.92 600171.67 70.29767999 -149.18879426 682.60 3.79 34.12 579.40 682.22 -6.57 16.39 10.31 10.04 2.32 0.74 $959110.30 600173.11 70.29763193 -149.15878211 15.93 15.10 5.09 0.99 5959115.39 600175.81 70.29770572 -149.18875972 774.80 862.12 3.31 3.16 43.93 55.89 671.43 758.61 774.25 661.43 -7.00 22.09 21.36 19.64 8.64 0.84 5959119.88 600179.30 7029771785 -149.18873093 957.35 3.01 82.45 853.70 958.$2 -6,42 27.00 25.86 22.70 12.38 0.79 5959123,09 600183.00 70.29772650 -149.18870063 1053.00 3.95 113.93 949.19 1052.01 -4,25 0.46 32.03 29.84 24,50 17.04 1.50 F959124.96 600187.63 70.29773142 -149.18866296 1146.24 5.14 129.78 1042.13 1144.95 7.67 37.70 32.56 23.49 22,54 2.19 5959124.02 600193.14 70.29772867 -149.18861842 45.04 34.70 19.52 28.68 1.84 5059120.13 600199.34 70.29771781 -149.18856866 1242.64 1335.38 822 11.12 152.69 168.09 1137.88 1229.31 1240.70 1332.13 18.47 56.11 36.74 10.63 35.17 4.17 $959111.33 600205.44 70.29769352 -149.18051616 1430.22 14.16 176.77 1321.85 1424.67 32.04 47.90 71.60 40.26 -4.02 40.06 4.16 5959096.75 600211.02 70.29765351 -149.18847657 1525.47 17.05 183.11 1413.59 1516.41 65.27 92.31 117.91 49.17 65.73 -24.56 42.60 3.77 5959076.25 600213.84 70.29759740 -149.18845599 1619.52 18.46 103.29 1503.15 1605.97 83.63 146.59 88,76 {0.14 42.50 3.52 5959050.67 600214.08 70.29752751 -149.18845681 -78.77 40.89 1.50 5959022.02 600212.06 70.29744928 -149.18646979 1714.25 1811.06 19.88 19.00 186.56 186.76 1592.69 1684.03 1695.51 102.69 177.53 116.06 -109.59 38.21 1.71 5958991.16 600210.58 70.29736508 -149.18840152 1904.40 20.75 182.93 1771.81 1786.85 1874.63 121.69 141.32 209.59 145.58 -141.44 34.49 0.71 5968959.28 600207.29 70.29727809 -149.18952162 2000.75 21.51 178.03 1861.69 1964.51 164.79 241.31 175.95 -173.04 31.86 2.34 5958927.64 600205.08 70.29719174 -149,18854295 2095.28 21.64 174.15 1949.60 2052.42 190.16 276.03 310.77 210.14 -207.75 31.59 2.00 5958892.94 600205.28 70.29709694 -149.18854510 244.78 -242.41 33.97 1.52 5958858.32 600208.11 70.29700225 -149.18852589 2189.22 2285.25 21.70 22.15 172.38 170.94 2036.88 2139.70 216.68 05.52 279.51 -276.91 38.04 0.71 5958823.87 600212.65 70.29690798 -149.18849288 2380.78 2304 173.73 2125.94 2214.14 2228,76 244.73 381.44 315.43 -312.45 43.26 0.68 5958788.41 600218.33 70.29681090 -149.18845068 2474.48 21.92 175.36 2300.72 2316.96 2403.54 273.10 299.87 418.14 453.96 352.12 387.92 -348.82 48.13 146 5958752.12 600223.69 7029671154 -149.18841118 2568.72 21.55 178.08 2388.26 2491.08 325.05 480.85 422.71 -384.48 51.49 1.41 5958716.50 600227.53 70.29661411 -149.18838401 -419.32 53.43 1.07 5958681.70 600229.93 70.29651894 -149.18936829 2664.70 2757.59 19.86 19.32 179.99 179.93 2478.04 2580.86 348.62 522.78 456.45 -453.24 54.03 1.90 5958647.79 600230.98 70.29642626 -149.18836348 2853.69 10.12 179.09 2565.55 2656.30 2668.37 2759.12 369.88 :!91.65 553.93 487.39 -484.39 54.05 0.58 5958616.65 600231.41 70.29634117 -147.18836331 2249,09 191¢9 171IM 2746.47 2849.29 413.17 585.56 616.44 518.87 549.64 516.02 54.32 54.96 0.36 5958585.03 600232.10 70.29625475 -149.18836113 3262.71 1910. 175.00 3043.36 3146.18 486.14 717.71 -546.89 0.50 5958554.17 600233.16 70.29617043 -149.18835594 9.518'Csg 3287.00 19.17 175.62 306831 3169.13 492.03 650.80 -647.98 60.46 0.63 5958453.17 600240.00 70.29589424 -149.18831142 725.87 858.76 -855.92 81.11 0.86 5958445.24 600240.76 70.28567257 -149.18830615 Drilling Office 2.6.1166.0 Prudhoe Bay Unit - WOAIZ-PAD\Z-6812-68\Z-68 8126/2013 10:30 AM Page 1 of 3 mo CommaMs (ft! 3357.72 Inc] ! ! 19.37 Azim Trus O 17240 TVDSS (ftl 3133-07 TVD lR) 3235.89 VSEC (ft1 508.95 AND Ikl 749.00 Closure (ft) 692 OB NS (ft) 679 21 EW 00 62 53 DLS (,it MR 0 tL9 Northing (Rus 5958421 98 rating (Rus) 600242 49 Latitude 0 70 29580894 Longltuda ('1 149 18829467 3452.841 364754 3643.44 3738.20 3833.64 9.55 18.93 18.31 17.D6 18.70 166.34 157.67 146-84 135.81 127.76 3222.79 3312.22 3403.12 349343 358427 3325:61 3416.04 3505.94 3596.25 3687.09 533.52 560.73 589-50 617.84 647.07 780.60 811.76 842.29 871.00 900.26 713.59 744.01 772.41 796.93 819.36 -710.44 -74005 -767.06 -789M -808.91 67.00 76.58 90.74 108.57 130.43 3.87 3.08 3.66 3.77 310 5958390.81 5958361.33 5958334.51 5958312.32 5958293.20 600247.38 600257.35 600271.86 600290.00 60031211 7029572361 70.29564271 70.29556893 70-29550764 70.29545461 -14918825843 -149.18818087 -149.18806628 •149.18792187 -149.18774490 3927.94 4023.16 4117.35 4211.91 4307.05 20.93 22.36 24.95 27.34 29.47 121.39 114.64 109.92 105.10 99-54 3672.99 3761.51 384779 3932.67 4016.37 3775.81 386433 3950.61 403549 4119.19 678.63 712.48 747.77 785.32 824.16 932.19 96728 1005.05 1046.69 1091.92 84167 664.00 886.05 908.78 931.54 -826.94 -M.36 857.60 -870.05 -87963 156.77 187.76 222.73 26245 306.64 3.29 3.01 3.40 3.38 3.57 5958275.52 5958259.53 5958245.75 5958233.63 5958224.85 600338.68 600369.88 600405.04 600444.92 600489.23 70.29540534 70.29536049 70.29532158 70.29528755 70.29526140 -149.18753168 -149.18728080 -149.18699767 -149.18667605 -149.18631832 4402.18 4496.56 4591-41 4685.71 4781.93 30.47 30.72 31.39 29.25 28.28 92.44 66.51 83.72 81.97 8185 4098.81 4180.07 4261.32 434272 442707 4201.63 4282.69 4364.14 4445.54 4529.89 862.02 896.81 929.61 960.12 989.20 1139.40 1187.40 1236,32 1283.92 1330.23 952.68 971.11 988.55 1005.81 1023.75 -884.53 -884.08 -879.91 -874.00 -867.49 353.83 401.81 450.55 497.78 543.62 3.87 3.21 1.67 2,45 1.01 5958220.57 5958221.66 5958226.49 5958233.02 5958240.15 600536.47 600584 44 600633.11 600680.26 600726.00 70.29524799 70.29524921 70.29526061 70.29527674 70.29529453 -149.18593626 -149.18554779 -149-18515320 -149.18477081 -149.18439967 4875.99 4971.48 5067.10 5161.22 5256.49 28.88 29.48 28.21 26.44 26.58 86.29 86.84 86.07 85.41 68.54 4509.68 4593.05 4676.80 4760.42 4845.67 461250 4695.87 4779.62 486324 4948.49 1018.76 1050.76 1082.40 1111.72 114124 137521 1421.76 1467.89 151110 1553.61 1044.35 1068.88 1094.52 1110,38 1145.62 -862 86 •859.95 •856.96 -85378 -851,54 588.35 634 81 680.65 723,93 766.38 2.35 0.64 1.35 1.91 1.47 5958245.37 5958248-90 5958252.48 5958256.26 5958259.06 600770.66 600817.08 600863.07 60090610 600948.52 70.29530716 7029531510 70.29532320 70.29533194 70.29533805 •149.18403753 -149.18366133 -149.18328883 -149,18293992 -14918259612 5349.14 5445.47 5540.43 5635.87 5731.20 26.34 28.71 28.79 28.75 28.73 67.40 85.95 85.88 8543 83.79 4928.62 5014.04 5097.29 5180.95 5264.54 5031.44 5116.86 5200.11 5283.77 5367.36 117042 1201.14 123224 1263.37 1.293.80 1594.89 1639,40 1685.08 173101 1776.85 1172.56 1201.76 1232.25 1263.69 129533 -85047 -847.47 -844.22 -840.74 -836.43 807.64 852.07 897.63 943.43 989.07 0.61 2.56 0.09 0.23 0.83 5958261.07 5958264.27 5958268.13 5958272.22 5958277.13 600989.74 601034.14 601079.64 601125.39 601170.96 70-29534203 70.29534913 70.29535600 7029536749 70.29537924 -149.18226211 -149.18190236 -149.18153350 -149.18116267 -149.18079322 5825.71 5920.51 6015.12 6506.66 6203.60 28.32 2799 27.19 29.01 28.71 82.42 85.10 83.35 83.84 83.00 5347.58 5431.17 551502 5597.51 5680.68 5450.40 5533.99 561784 5700.33 5783.50 1322.88 1352.07 1380.95 1409.62 1439.34 1821,98 186671 1910.52 1954.57 2000.40 132645 1358.42 1390.67 142340 1457.99 -831.02 -826.15 -821.75 -816.84 -811.59 1033.87 1078.33 1121-92 1165.69 1211,22 0.82 1.38 1.20 1.96 0.53 595B283.14 5958288.60 5958293.58 5958299.07 5958304.93 601215.68 601260-06 601303.59 601347.29 601392.74 70.29539401 70.29540729 70.29541929 70.29643269 70.29544701 •14918043048 -149.18007055 -149.17971761 -149.17936321 -119.17899457 6298.46 6393.14 6488.02 6582.85 6677.30 28.94 28.07 27.34 28,53 26.97 86.85 86.42 85.79 87.63 87.07 5763.79 5846-99 5930.99 6014.77 6098.36 586661 5949.81 6033.81 6117,59 6201.18 1469.88 1501.07 1531.21 1561.91 1592,66 2046.12 209131 2135.42 2179.84 2223,82 1493.85 1530.59 1566.66 1603.66 1640.90 •807.55 -804-90 -801.91 -799.38 -797.35 1256.76 1301.86 1345-87 1390.22 1434.15 1.97 0.94 0.83 1.55 1.67 5958309-57 5958312.82 5958316.40 5958319.53 5958322.14 601438.21 601483.28 601527.24 601571.54 601615.44 70.29545802 70.29546524 70.29547340 70.29548030 70.29548582 -149.17862591 •149.17826071 -149.17790440 -14917754535 -149.17718969 6773.28 6868.66 6963.56 7058.57 7153,33 29.03 26.52 29,12 28.12 27.88 89.17 88.45 88.16 87.32 82.45 6183.10 6266.70 6349.85 6433.25 6516.93 6285.92 6369.52 6452.67 6536.07 6619.75 1624.60 165752 1690.04 1722,08 1751.76 2268.67 2314.78 2360.53 2406.04 2450.50 1679.71 1719,83 1759.89 179981 183797 •795.90 -794.95 -793.59 -791 80 -781,85 147917 1525.08 1570.80 1616.28 1660.55 2.38 0.65 065 113 2.43 5958324.19 5958325.75 5958327,71 5958330.11 5958334.65 601660.44 601706,32 601752.02 601797.46 601841 68 70,29548975 70.29549233 70.29549600 70.29550086 70.29551164 -149.17632513 -149.17645350 -149.17608328 -149.17571511 -149.17535663 7247.48 7313.60 7431,68 7533.20 7626.91 28.97 29 17 2945 30.32 2958 84.48 84,86 85.89 85.RO 85.61 6599.73 6883.74 6765.78 6848.60 6929.79 6702.55 6786.56 6866.60 6951 42 7032.61 1780.85 1811.90 1842.94 1875.31 1907.04 2495.32 2542.02 2586.07 2635.67 2682.45 1876.16 1916.76 1957.32 1999.67 2041.47 -782.76 -778.42 -774.71 -771.26 -767.76 17D5 07 175157 1797.48 1844.95 189160 1.55 0.28 061 0.91 0.80 5958340-33 5958345.29 5958349,61 5958353.69 5958357.82 601886-12 601932.55 601978,40 602025.81 602072.41 70.29552551 70.29553733 7029554744 70.29565683 70-29556637 -149.17499618 -149.17451969 •149,17424803 -149-17386371 -149.17348599 7721 95 7817.60 7912.30 8006.80 8100.15 31.11 31,27 30.77 33.51 33.88 87.38 87.03 86.68 87.98 92.65 701181 7093.63 7174.79 7254.80 733248 7114.63 7196.45 7277.61 7357.62 7435.30 1.940.10 1974.63 2006.44 2043.59 2081.64 2730.46 2779.99 2826.80 287906 2930. B4 2084 88 213012 2174.75 2221,08 2269.90 -764.84 -76243 -759.75 -757.43 -757,73 1939.52 1988.99 203772 2087,94 2139.69 1.86 0.25 0,56 2,99 2.80 5956361.37 5958364.45 5958367.77 5958370.76 595837116 602120-28 602169.72 602218.40 602268.58 602320.33 70.29557431 70.29358088 70.29558815 70.29559445 70.29559361 -149.17309801 -14917269743 -149.17230291 -149.17189637 -14917147731 8195.68 8290.80 5385.14 848000 8574,50 8954.22 34.46 3382 33.21 35.36 35.31 33.93 94.56 93.83 93.59 9323 9272 88.80 741151 7490,24 7W 90 7647.27 7724.36 8036.41 751433 7593-06 7671.72 7750.09 7827.18 8139.23 212311 2164.71 2205.03 2246.20 2288.05 244812 2984.50 3037.88 3089.97 314140 3198-05 341440 2321.55 2373.17 2423.50 2475.13 2527.92 2735.39 -761.11 -765.01 -76838 •771.56 -77440 -777.17 2193.24 2246.48 2298.46 2351.80 2406.38 2622.66 1.27 C.80 0.66 2.28 0.32 0.66 5958368.49 5958365.29 5958362.62 5958360.15 5958359,05 5958358.15 602373.91 602427,19 602479.21 602532.58 60258719 6D2803.47 70.29558433 -14917104377 70.29557361 -149,17061275 7029556436 -149 17019190 7029555564 -149.16976007 7029554784 -149.16931818 70.29554006 -149.16756714 Drilling Office 2.6.1166.0 Prudhoe Bay Unft - WOA\Z-PAD\Z-6812-68\Z-68 812612013 10:30 AM Page 2 of 3 Comment. MD Incl Azlm Trus TVDSS TYD VSEC AHD Closure NS EW DLS Northing Easting Latitude Longitude (1911 11 (1) (ft) (ft) IR) (ft) (ft) (ft) (ft) (9100ft) (RUB) Must (•) l') 9049.09 33.85 91.56 8115.17 8217.99 2486.91 3467.30 2706.18 -777.34 2675.55 1.62 5958358.69 602856.35 70.29553956 -149.16713698 9143.77 32.45 90.35 8194.44 8297.26 2525.37 3519.07 2836.16 -778.21 2727.31 1.64 5958358.51 602908.11 70.29553712 -149.16671967 9238.91 33.61 90.86 8274.20 8377.02 2563.67 3570.92 2886.21 -778.76 2779.16 1.25 5958358.65 602959.96 70.29553556 -149.16630004 9334.01 34.30 72.12 8353.08 8455.90 2603.44 3624.04 2937.74 -780.15 2832.26 1.04 5958357.97 603013.07 70.29563172 -149.16587017 9429.01 36.14 90.67 8430.69 8533.51 2644.40 3678.82 2990.92 -781.47 2887.03 2.13 5958357.38 603067.84 7029552807 -149.16542676 9523.72 35.60 90.61 8507.44 8610.26 2685.40 3734.32 3044.68 -782.09 2942.52 0.57 5958357.50 603123.33 70.29552631 -149.16497749 9555.18 35.23 90.36 8533.08 8635.90 2698.84 3752.55 3062.34 -782.24 2960.75 1.26 5958357.59 603141.56 70.29552567 -149.16482990 9635.53 34.45 90.05 8599.02 8701.64 2732.52 3798.45 3106.78 -782.41 3006.65 1.Do 5958358,04 603187.46 70.29552537 -149.16445826 7' 9702.00 34.52 91.38 8653.81 875863 2760.37 3836.09 3143.33 -782.87 3044.28 1.13 5958358.07 80322509 70.29552405 -149.18415359 9714.26 34.54 91.62 8663.93 8766.75 2765.58 3843.05 3150.12 -783.06 3051.24 1.13 5958357.98 603232.05 70.29552354 -149.16409725 9746.58 36.87 92.28 8690.16 8792.98 2779.80 3861.90 3168.53 -783.70 3070.08 7.31 5958357.59 603250.89 70.29552176 -149.16394473 9778.16 37.76 98.57 8715.28 8618.10 2794.96 31181.03 3187.42 -785.52 3089.11 12.39 5958356.02 603269.95 70.29551677 .149.16379062 9809.78 39.04 102.72 8740.06 8842.88 2811.55 3900.66 3207.02 -789.16 3108.41 9.10 5958352.64 603289.29 70.29550682 -149.16363445 9842.18 41.71 109.20 8764.76 8867.58 2830.23 3921.64 3227.97 -794.95 3128.55 15.35 5958347.12 603309.60 7029549096 -149.16347137 9873.33 45.45 109.66 8787.32 8890.14 2849.91 3943.11 3249.35 -802.10 3148.80 12.05 5968340.24 603329.84 70.29547142 _ -149.16330747 9904.20 49.54 110.19 8806.17 8910.99 2870.85 3965.86 3271.99 -809.65 3170.19 13.31 5958332.77 603351.33 70.29545020 -149,16313432 9933.29 51.72 110.85 8826.62 8929.44 2891.63 3988.35 3294.35 -817.74 3191.25 7.70 5950325.17 603372.49 70.29542864 -149.16296385 9965.77 54.84 111.85 8846.04 8948.86 2915.82 4014.38 3320.19 -827.22 3215.49 9.92 5958316.01 603396.86 70.29540271 -149,16276761 9998.81 57.55 111.02 8864.42 8967.24 2941.35 4041.83 3347.44 -837.25 3241.04 8.46 5958306.33 603422.54 7029537528 -149.16256075 Tie -In Survey 10031.66 60.33 112.60 8881.37 8984.19 2967.59 4068.97 3375.35 -847.71 3267.16 9.41 5958296.22 603448.79 70.29534668 -149.16234932 10082.38 61.16 110.42 8896.38 8999.20 2992.52 4096.77 3401.95 -857.53 3292.10 6.75 5958286.73 603473,85 7029531981 -149.16214749 10096.21 53.55 111.17 8914.62 9017.44 3018.87 4125.23 3430.25 -867.63 3318.71 22.57 5959276.99 603500.60 70.29529219 -149.16193206 10127.54 60.08 113.60 8931.76 9034.58 3043.40 4151.44 3456.21 -677.63 3342.93 21.83 5958267.31 603524.95 70.29526485 -149.18173600 10162.00 68.50 113.00 8946,70 9049.52 3072.61 4182.46 3486.89 -869.89 3371.42 24.48 5958255.43 803553.00 70.29523130 -149.16150536 10200.00 77.50 113.00 8957,79 9060,61 3106.72 4218.76 3522.82 -904.08 3404.84 23.68 5958241.69 603587.20 70.29519251 -149.16123487 10233.00 84.00 113.00 8963.10 9065.92 3137.31 4251.31 :k,55.D5 -916.80 3434.80 19.70 5958229.38 603617.33 70.29515773 -149.16099231 Survey Error Model: ISCWSA Rev 0 - 3-D 95.000% Confidence 2.7955 sigma Survey Program: Description MD From MD To EOU Freq Hol. Size Casing Diameter Survey Tod Type BoreholeI Survey (ftl (ft) (ft) (inl on) 0.000 464.000 Act Sins 12.250 9.625 Z- 'S1 IZ-68PBl 495.110 3220760 Act Sins 12.250 9.625 MWD+IFR+MS Z-681`61 I Z-68PBI 3262.710 3262.710 Act Sins 8-750 7.000 INC+TREND Z-68PB11 Z-66PB1 3357.720 9635.530 Act Stns 6.750 7.000 MWD+IFR+MS Z-681`81 I Z-68PB1 9714.280 9714.280 Act Stns 8.750 7.000 INC+TREND Z-68PB1 I Z-68PB1 9746.580 9898.810 Act Stns 6.125 4.500 MWD+IFR+MS Z-681`811 Z-681`81 10031.660 10031.660 Act Stns 6.125 4.500 MWD+IFR+MS Z-68PB1 IZ-681,61 10062.380 10127.540 Act Stns 6.125 4.500 MWD Z-681 Z-68 10442.510 10538.000 Act Stns 6.125 4.500 BLIND Z-68 I Z-68 Legal Description: Northln9 ((h Esating (X) Surface: 4290.4 FSL 2506.7 FEL S19 T11N R12E UM 59591 600170.920 SHL: 3373 FSL 4355 FEL 20 TI IN R12EUM 5958229.300 603617.330 Final Definitive Survey Verified and Signed -off All targets and/or well position objectives have been achieved. Yes ❑ No I have checked to the best of my abli fy that the following data Is correct: O Surface Coordinates O Declination & Convergence ❑+ t3RS Survey Corrections p Survey Tool Codes _ SLB DE: Drilling Office 2.6.1166.0 Prudhoe Bay Unit - WOA1Z-PAD\Z-68\Z-6812-68 8/26/2013 10:30 AM Page 3 of 3 by 0 Z-68 Survey Geodetic Report (Def Survey) d: BP I: Prudhoe Bay Unit- WOA :tura I Slot: Z -PAD I Slot (SP) TVD Reference Elevation: Z-68 hole: Z-68 • 500292349300 ey Name: Z-68 ey Date: August 19, 2013 1 AND I DDI I ERD Ratio: 226.076' 14251.314 R! 8.035 10.469 dinste Reference System: NAD27 Alaska State Plane, Zona 04, US Fast 410n Let I Long: N 70" 17' 51.59215', W 149" 11' 19.68329" 4ton Grid NIE YfX: N 5958100.2301tUS, E 600170.920 RUS Grid Convergence Angle: 0.7637' Scale Factor: 0.9999114 scmmdww Vertical Section Azimuth: 133.000' (True North) Vertical Section Origin: 0.000 R, 0.000 it TVD Reference Datum: Rotary Table TVD Reference Elevation: 102,820 R above MSL Ground Eievatinn: 55.900 R above MSL Magnetic Declination: 20.049' Total Gravity Field Strength: 1001.9930mgn (9,80665 Based) Total Magnetic Field Strength: 57606,931 nT Magnetic Dip Angle: 80.977' Declination Data: AuOust 20, 2013 Magnetic Declination Model: BGGM 2012 North Reference: True North Grid Convergence Used: 0.0000' Total Corr Mag Ncrth- Trua North: 20.0493' Local Coord Referenced To: Well Head Comment. MD (Rl Ind 19 Azlm True TVDSS TVD VSEC AHO Closure NS EW DLS Northing EaeUng Latitude Longitude RTE 000 0.00 rl 000 (RI 102 82 (ftl 000 (R) 0 00 (ttl 0.00 Itt1 0.00 (R) 0.00 (Rl (I Y011 (I100R1 (RU31 (RUSI O ( ) WRP 46.92 0.00 0.00 -55.90 46.92 0.00 0.00 0.00 0.00 NfA 5959100.23 600170.92 70.23766449 -149.18880091 100.00 0.15 279.71 -2.62 100.00 -0.06 0.07 0.07 0.00 0.00 5959100.23 600170.92 70.29766449 -149. t8880091 190.00 023 323.42 87.18 190.00 -0.33 0.35 0.34 0.01 -0.07 0.28 5059100.24 600170.85 70.29766452 -149.18880147 281.00 0.28 13.29 178.18 281.00 -0.62 0.73 0.64 0.18 .0.29 0.18 5959100.40 600170.63 70.29766417 -149.18880328 0.54 -0.35 0.24 5959100.76 600170.56 70.29766596 -149.18880375 374,00 464,00 1.01 2.58 13.50 11.69 271.17 361.13 373.99 463.85 -1.14 1.76 1.56 1,56 -0.11 0.78 5959101.79 600170.79 70.29766874 -149.18880178 495.11 2.59 14,95 392.20 49502 -2.56 -3.27 4.60 6.00 4.34 4,31 0.50 1.75 5959104.55 600171.36 70.29767626 -149.18879690 58722 3.17 22.22 484.20 587.02 -5.15 10.62 5.74 10.31 5.68 0.82 0.44 5959105.92 600171.67 70.29767999 -149.18879426 682.60 3.79 34.12 579.40 682.22 -6.57 16.39 15.93 10.04 2.32 0.74 5959110.30 600173.11 70.29763193 -149.18878211 15.10 5.09 0.99 5959115.39 600175.81 70.29770572 -149.18875972 774.80 862.12 3.31 3.16 43.93 55.89 671.43 758.61 774.25 661.43 -7,00 22.09 21.36 19.54 8.64 0.84 5959119.88 600179.30 70.29771785 -149.18673093 957.35 3.01 82.45 653.70 956.52 -6,42 27.00 25.86 22.70 12,38 0.79 5959123.09 600183.00 70.29772650 -149.18870063 1053.00 3.95 113.93 949.19 1052.01 -4,25 0.46 32.03 37.70 29.84 32.58 24,50 17.04 1.50 5959124.95 600187.63 70.29773142 -149.18866296 1146.24 5.14 129.78 1042.13 1144.95 7.67 45.04 34.70 23.49 22,54 2.19 5959124,02 600193.14 70.29772867 -149.18861842 19.52 28.68 1.84 5959120.13 600199.34 70.297711781 -149.18856866 1242.64 1335.38 822 11.12 152.69 168.09 1137.88 1229.31 1240.70 1332.13 18.47 56.11 36.74 10.63 35.17 4.17 5959111,33 600205 94 70.29769352 -149.18851616 1430.22 14.16 176.77 1321.85 1424.67 32.04 47.90 71.60 40.26 -4.02 40.06 4.16 5959096.75 600211.02 70.29765351 -149.18&17657 1525.47 17.05 183.11 1413.59 1516.41 65.27 92.31 117.91 49.17 65.73 -24.56 42.60 3.77 5958076.25 600213.84 70.29759740 -149.18845599 1619.52 18.46 183.29 1503.15 1605.97 03.63 146.59 88.76 50.14 42.50 3.52 5959050.67 600214.08 70.29752751 -149.18845681 -78.77 40.89 1.50 5959022.02 600212.86 70.29744928 -149.18846979 1714.25 1811.06 19.68 19.00 186.56 186.76 1592.69 1664.03 1695.51 1786.85 102.69 177.53 116.06 -109.59 38.21 1.71 5958991.16 600210.59 70.29736508 -149.18849152 1904.40 2015 182.93 1771.81 1874.63 121.69 141.32 209.59 145.59 -141.44 34.49 0.71 5988959.28 600207.29 70.29727809 -149.18652162 2000.75 21.51 178.03 1061.69 1964.51 164.79 241.31 276.03 175.95 210.14 -173.04 31.86 2.34 5958927.64 600205.08 70.29719174 -149.18854295 2095.28 21.64 174.15 1949.60 2052.42 190.16 310.77 244.78 -207.75 31.59 2.00 5958892.94 600205.28 70.29709694 -149,18854510 -242.41 33.97 1,52 5958858.32 600208.11 70.29700225 -149.18952589 2189.22 228525 21.78 22.15 172.38 170.94 2036.88 2125.94 2139,70 2228.76 216.68 ;,45.52 279.51 -276.91 38.04 0.71 5958823.87 600212.65 70.29690798 -149.18849288 2380.76 23.04 173.73 2214.14 2316.96 244.73 273.10 381.44 41814 315.43 352.12 -312.45 43.26 0.68 5948788.41 600218.33 70.29681090 -149.18845068 2474.40 21.92 175.56 2300.72 2403.54 299.87 453.96 387.92 -348.82 48.13 1.46 5958752.12 600223.69 70.29671154 -149.18841118 2568.72 21.55 176.00 2388,26 2491.08 325.05 480.85 422.71 -384.48 51.49 1.41 5958716.50 600227.53 70.29661411 -149.18838401 -419,32 53.43 1.07 5958681.70 600229.93 7029651894 -149.18936829 2664.70 2757.59 19.86 19.32 179.99 179.93 2478.04 2565.55 2580.86 2668.37 340.62 522.76 456.45 -453.24 64.03 1.90 5958647.79 600230.98 70.29642626 -149.18836348 2853.69 19,12 179.09 2656.30 2759.12 369.88 391.65 553.93 505.56 487.39 518.87 484.39 54.05 0.58 5958616.66 600231.41 70.29634117 -149.18836331 N4$.04 1¢,6Q 176,67 2746.41 2849.29 413.77 616.44 549.64 516.02 546.89 54.32 0.36 5958585.03 600232.10 70.29625475 -149.16836113 3262.71 19.10 175.00 3043.36 3146.18 486.14 54.96 0.50 5958554.17 600233.16 70.29617043 -149.18835594 956"Csg 3287.00 19.17 175.62 306631 3169.13 492.03 717.71 650.80 -647.98 60.46 0.63 5958453.17 600240.00 70.29689424 -149.18831142 725.67 654.76 5,55 02 61.11 0.88 5958445.24 600240.76 7029587257 -149.18830615 Drilling Office 2.6.1166.0 Prudhoe Bay UnR - WOA1Z-PAD1Z-68)Z-6812-68 8/26/2013 10:30 AM Page 1 of 3 MD Ind A21m True TVDSS TVD VSEC AHD cbeum NS EW DLS Norlhing Easting Latitude Longitude CommeMe {R) O () (ft) (ft) (R) (h) (ft) (R) (R) P1100R) IRUS) (RVS) (9 ('1 3357.72 19.37 177.40 3133.07 3235.89 508.95 749.00 642.08 -679.21 62.53 0.64 5958421.98 600242.49 70.29580894 14918829467 3452.84 19.55 166.34 3222.79 3325.61 $33.52 780.60 713.59 .71044 67.00 3.87 5958390.81 800247.38 70.29572361 -149.18825843 354754 18.93 157.67 3312,22 3415.04 560,73 81176 744.01 .740.05 76.58 3.08 5958361.33 600257.35 70.29584271 -149.18818087 3643.44 18.31 146.84 3403.12 3505.94 589.50 842.29 772.41 -767.06 90.74 3.66 595833451 60027186 70.29556893 -149.18806628 3738.20 17.06 135.81 3493.43 3596.25 617.84 871.00 796.93 -789.50 108.57 3.77 5958312.32 600290.00 70 29550764 -149.18792187 3833.64 18.70 127.76 3584.27 3687.09 647.07 900.26 819.36 -808.91 130.43 310 5958293.20 60031211 70.29545461 -149.18774490 3927.94 20.93 121.39 3672.99 3775.61 678.63 932.19 841.67 -826.94 156.77 3.29 595827552 600338.68 70.29540534 -149.18753168 4023.16 22.36 114.64 3761.51 3884 33 712 48 967.28 864.00 -P4136 187.76 3.01 5958259.53 600369.88 70.29536049 -149.18728080 4117.35 24.95 109.92 384779 3950.61 74777 1005.05 886.05 557.60 222.73 3.40 5958245.75 600405.04 70.29532158 -149.18699767 4211.91 2734 105.10 3932.67 403549 785.32 1046.69 908.76 -870.05 262.45 3.38 5958233.83 600444.92 70.29526755 -149.18667605 4307.05 29.47 99.54 4016.37 4119.19 824.16 1091_92 931.54 -879.63 306.64 3.57 5958224.85 600489.23 70.29528140 -149.10631832 4402.1 B 30.47 92.44 4090.61 4201.63 86202 1139.40 952.68 -884.53 353.83 3.87 5958220.57 600536 47 70.29524799 .149.16593626 4496.56 30.72 86.51 4180.07 4282.89 896.81 1187.40 971 11 -884.08 401.81 3.21 5958221.66 600564 44 70.29524921 -149.18554779 4591.41 31.39 83.72 4261.32 4364.14 929.61 123632 988.55 -879.91 450.55 1.67 5958226.49 600633.11 70.29626061 -149.18515320 4685.71 29.25 81.97 4342.72 4445.54 960.12 1283.92 1005.81 -874.00 497.78 2.45 5958233.02 600680.26 70.29527674 -149.18477081 4781.93 28.28 81.85 442707 4529.89 989.20 1330.23 1023.75 -86749 543.62 1.01 5958240.15 600726.00 70.29529453 -149.18439967 4875.99 28.80 86.29 4509.68 4612,50 1018.76 1375.21 1044.35 -862-86 588.35 2.35 5958245.37 600770.66 7029530716 049.18403753 4971.48 29.48 86.54 4593.05 4695.87 1050.76 1421.76 1068.88 -859.95 634.81 0.64 5958248.90 600817.08 70.29531510 .149.18366133 5067,10 28.21 66.07 4676.80 4779.62 1082,40 1467.89 1094.52 -856.98 680.85 1.35 5958252.48 600863.07 70.29532320 -149.18328863 5161.22 26.44 85.41 4760.42 4863.24 1111.72 1511.10 1118,38 -853.78 723.93 1.91 5958256.26 60090610 7029533194 -149.18293982 5256.49 26.58 88.54 4845.67 4948.49 1141.24 1553.61 1145.62 -851.54 766.38 1.47 5958259.06 600948.52 70.29533805 -14918259612 5349.14 26.34 87.40 4928.62 5031.44 1170.42 1594.89 1172.56 -850.07 807.64 0.61 5958261,07 600989.74 70.29534203 -149.18226211 5445.47 28.71 85.95 5014,04 5116.86 120114 1639.40 1201.76 -847.47 852.07 2.56 5958264.27 601034.14 7029534913 -149.18190236 5540.43 28.79 85.88 5097.29 52DO.11 123224 1685.08 1232.25 -84422 897.63 0.09 5958268.13 601079.64 70.29535600 -149.18153350 5635.87 28.75 85.43 5180.95 5283.77 1263.37 1731.01 1263.69 -840.74 943.43 0.23 595827222 601125.39 7029530749 -149.10116267 5731.20 26.73 83.79 5264.54 5367.36 1293.80 1776.85 129533 -836.43 989.07 0.83 5958277.13 601170.96 70.29537924 -149.18079322 5825.71 28.32 82.42 .93-4758 5450.40 1322.88 1821.98 132645 -831.02 1033.87 0.82 5958283.14 601215.68 70.29539401 .149.18043048 5920.51 27.99 85.10 5431.17 5533.99 1352.07 1866.71 135842 -826.15 1078.33 1.38 5958288.60 601260.06 70.29540729 .149.18007055 6015.12 27.19 83.35 5515.02 561784 138D.95 1910.52 1390.67 -821.75 1121.92 1.20 5958293.50 601303.59 70.29641929 -149.17971761 6108.64 29.01 83.84 5597.51 5700.33 1409.62 1954.57 142340 -816.84 1165.69 1.96 5958299.07 601347.29 7029543269 -149.17936321 6203.60 28.71 83.00 5680.68 5783.50 143934 2000.40 1457.99 -811.5? 1211.22 0.53 5958304.93 601392.74 70.29544701 -149.17899457 6298.46 28.94 86.85 5763.79 5866.61 1469.88 2046.12 1493.85 -80755 1256.76 1.97 5958309.57 601438.21 7029545802 -149.17862591 6393.14 28.07 86.42 5846.99 5949.81 1501.07 209131 1530.59 -804.90 1301.86 094 5958312.82 60148328 70.29546524 .149.17826071 6408.02 27.34 85.79 5930.99 6033.81 1531.21 2135.42 1566.66 .801.91 1345.87 0.83 595831640 601527.24 70.29547340 -149.17790440 6582.85 2853 87,63 6014.77 6117.59 1561.91 2179.84 1603.66 -799.38 1390.22 1.55 5958319.53 601571.54 70.29548030 .14917754535 6677.30 26.97 87.07 6098.36 6201.18 1592.66 2223.82 1640.90 -797.35 1434.15 1,67 5958322.14 601615,44 70.29548582 -149.17718969 677328 29.03 89,17 6183.10 6285-92 1624.60 2268.87 1679.71 -795.90 1479.17 2.38 5958324.19 601660.44 70.29548975 -14917682513 6868.66 28.52 88.45 6266.70 6369.52 1657.52 2314.78 1719.83 -794.95 1525.08 D.65 5958325.75 601706.32 70.29549233 -149.17645350 6963.56 29,12 88.16 6349.85 6452.67 1690.04 2360.53 1759.89 -793.59 1570.80 065 5958327.71 601752.02 70.29549600 -149.17608326 7056.57 28.12 87.32 6433.25 6536.07 1722.08 2406.04 179981 -791.80 1616.28 1.13 5958330 11 601797.46 70.29550086 -149.17571511 7153.33 27.88 82.45 6516.93 6619.75 175176 2450.50 1837.97 -787.85 1660.55 243 5958334.65 601841.68 7029551164 -149.17535663 7247.48 28.97 84.46 659913 6702.55 1780.85 2495.32 1876.16 -782.76 1705.07 1.55 5958340.33 601886.12 70.29552551 -149.17499618 7343.60 2917 8486 6683.74 6786.56 1811,90 2542.02 1916.76 -778.42 1751.57 0.28 5958345.29 601932.55 70.29553733 -149.17461969 743768 29.45 85.89 6765.78 6068.80 1842.94 2586.07 195732 -77471 179748 0.61 5958349.61 601978.40 70 29554744 -149.17424803 7533.20 30.32 85.80 6846.60 6951.42 1875.31 2635.67 1999.67 -771.26 1844.95 0.91 5958353 69 602025.81 70.29566683 -14917386371 7626.91 2958 85.61 6929.79 7032-61 1907.04 2682.45 2041.47 -767.76 1891.60 0.80 5958357.82 602072.41 70.29556637 -149.17348599 7721 95 31.11 87.38 7011.81 7114.63 1940.10 2730.46 2084.88 -764.84 1939.52 1.86 5958361.37 602120.28 70.29557431 -149.17309801 7817.60 31.27 87.03 7093.63 7196.45 1974.63 2779.99 213012 -762 43 1988.99 0.25 5958364.45 602169.72 70.29558DOO -149.17269743 7912.30 30.77 86.68 7174.79 7277.61 2008.44 2826.80 2174.75 -759.75 203772 0.56 5958367.77 602216.40 70-29558815 .149.17230291 8006.60 33.51 87.90 7254.60 7357.62 2043.59 287906 2221.OB -75743 2087.94 2,99 5958370.76 602268-58 70.29559445 .149.17189637 8100.15 3389 92.65 7332.48 7435.30 2081.64 2930,84 2269 90 .757.73 2139.69 2.80 5958371 16 60232033 70.29559361 -149.17147731 8195.68 34.46 94.56 7411.51 7514.33 2123.11 2984.SD 2321.55 .761.11 2193.24 1.27 5958368.49 602373.91 7029568433 -14917104377 6290.80 33 82 93.83 7490.24 7593.06 2164.71 3037.08 2373.17 465.01 224648 0.80 5958365.29 652427.19 70.29557361 -149 17061275 8385.14 33.21 93.59 7568.90 767172 2205.03 3009.97 2423.50 -768.38 2298.46 0.66 5958362.62 602479.21 7029556436 -14917019190 8480.00 35.36 93.23 7647.27 7750.09 2246.20 3143.40 2475.13 -771.56 2351.80 2.28 5958360.15 602532.58 7019555564 -14916976007 8574.50 35.31 92.72 7724.36 7827.18 2288.05 3198.05 2527.92 -774.40 2406.38 0.32 5958358.05 60258719 7029554704 -149.16931818 8954.22 33.93 88.80 003641 813913 2448.12 341440 2735.39 -777.17 2622.66 0.66 5958358.15 602803.47 70.29554006 .149.16756714 Drilling Office 2.6.1166,0 Pnldhoe Bay Unft - WOA1Z-PAD1Z-6812-6812-68 8/2612013 10:30 AM Page 2 of 3 Drilling Office 2.6.1166.0 Prudhoe Bay Unit - WOA2-PAD1Z-68)Z-6812-68 8/26/2013 10:30 AM Page 3 of 3 MD Incl Azim True TVDSS TVD VSEC AHD Closure NS EW DLS Northing Easting Latitude LongRude Comments (ft) (') 1') (ft) (ft) (It) (RI (ft) (ft) (ft) ('1100ft) (itus) (RUS) 9049.09 33.65 91.50 8115.17 8217.99 2486.91 3467.30 2796.18 -777.34 2675.55 1.62 5958358.69 602856.35 70.29553?56 -149.16713896 9143.77 32.45 90.35 8144.44 8297,26 2525.37 3519.07 2036.16 -778.21 2727.31 1.64 5958358.51 602908.11 70,29553712 -149.16671987 9238.913.1.61 90.86 8274.20 8377,02 2563.67 3570.92 2886.21 -778.76 2779.16 1,25 5958358.65 602959.96 70.29553556 -149.166.30004 9334.01 34.30 '12.12 8353.08 8455.90 2603.44 3624.04 2937.74 -780.15 2832.26 1.04 5958357.97 603013.07 70.29553172 -149.16587017 9429.01 36,14 90.67 8430.69 8533,51 2644.40 3678.52 2990.92 -781.47 2887.03 2.13 5958357.38 603067,84 7029552807 -149.16542676 9523.72 35.60 90.61 8507.44 8610.26 2685,40 3734.32 3044.68 -782.09 2942.52 0.57 5958357.50 603123.33 70.29552631 -149.16497749 9555.18 35.23 90.36 8533.08 8635.90 2698.84 3752.55 3062.34 -782.24 2960.75 1.26 5958357.59 603141,56 70,29552587 -149.16482990 9635.53 34.45 90.05 8599.02 8701.84 2732.52 3798.45 3106.78 -782.41 3006.65 1.D0 5958356.04 603187.46 70.29`52537 -140.16445826 7' 9702,00 34.52 91.38 8653.81 875863 2760.37 3836,09 3143,33 -782.87 3044.26 1.13 5958358.07 603225.09 70.29552405 -149.16415359 9714.28 34.54 91.62 8663-93 8766.75 2765.58 3843.05 3150.12 -783.06 3051.24 1.13 5958357.98 603232.05 70.29552354 -149.16409725 9746.58 16.87 92.28 8690.16 8792.99 2779.80 3861.90 3168.53 -783.70 3070.08 7.31 5958357.59 603250.89 70.29552176 -149.16394473 9778.16 37.76 98.57 8715.28 8818.10 2794.96 3881.03 3187,42 -785.52 3089.11 1239 5958356-02 603269.95 70.29551677 -149,16379062 9809.78 39.04 102.72 8740.06 8842.88 2811.55 3900.66 3207.02 -789.16 310861 9.10 5958352,64 603289.29 70.20550682 -149.16363445 9842.18 41.71 109.20 8764,76 8067.58 V30.23 3921.64 3227.97 -794.n5 3126.55 15,35 $958347.12 603309.60 70.29549096 -149.16347137 9873.33 45.45 109.66 8787.32 6890.14 2849.91 3943.11 3249.35 -802-10 3148,80 12.05 5958340.24 603329.84 70.29547142 -149.16330747 9904.20 49.54 110.19 8608.17 8910.99 2870.85 3965.86 3271.99 -809.85 317019 13.31 5958332.77 603351,33 70,29545020 -140.16313432 9933.29 51.72 110.85 8826.62 8929.44 2891.63 3988-35 3294.35 $17.74 3191.25 7.70 5958325.17 603372.49 70.29542864 -149.16296365 9965.77 54.84 111.85 8846.04 8348.86 2915.82 4014.38 3320.19 ?27,22 3215.49 9.92 5958316.01 603396.86 70.29540271 -149.16276761 9398.81 57.55 111.02 8864,42 8967.24 2941.35 4041.93 3347.44 -837,25 3241.04 8.46 5958306.33 603422.54 70.29537528 -149-16256075 Tie -In Survey 10031.66 60.33 112.60 8881.37 8984.19 2967.59 4069,97 3375.35 -847.71 3267.16 941 5958296.22 603448.79 7029534668 -149.16234932 10062.38 61.16 110.42 6896.38 8999.20 2992.52 4096.77 3401,95 -857.53 3292.10 6.75 5958286.73 603473.85 70.29531961 -149.16214749 10096.21 53.55 111.17 8914.62 9017.44 3018.87 4125.23 3430.25 -867.63 3318.71 22.57 5958276.99 603500.60 70.29529219 -149.16193206 10127.54 60.08 113.60 8931.76 9034,58 3043.40 4151.44 3456,21 -877.63 3342.93 21.83 5958267.31 603524,95 70.29526485 -144.16173600 10162.00 68.50 113.00 8946.70 9049.52 3072.61 4182,46 3486.89 -889.89 3371.42 24.48 5956255.43 803553.80 70.29523130 -149.16150536 10200.00 77.50 113.00 8957.79 9060.61 3106.72 4218.76 352ZE2 -904.08 3404.61 23.68 5958241.69 603587.20 70.29519251 -149.16123487 10233.00 84.00 113.00 8n63.10 9065.92 3137.31 4251.31 2555.05 -916.80 3434.80 19.70 5958229.38 603617.33 7029515773 -149.16099231 Survey Error Model: ISCWSA Rev 0 "' 3-D 95.O00-<Confiidence 21955 eigma Survey Program: MD From MD MD To EOU Freq Hob Size Casing Diameter Survey Tool Type Borehole 1 Survey Description (ft) (ft) (In) (in) 0.000 464.000 Act Sins 12.250 9,625 GYD-UL;_bS - 8PB1 ( Z-6BPB1 495.110 3220,760 Act Stns 12.250 9.625 MWD+IFR+MS Z -68P811 Z-66PB1 3262.710 3262,710 AU Stns 8-750 7.000 INC+TREND Z -68P81 I Z-68PB1 3357.720 9635.530 Act Stns 8.750 7.000 MWD+IFR+MS Z-68PBI IZ-68PB1 9714,280 9714.280 Ad Stns 8.750 7 000 INC+TREND Z-68PB7 f Z-68PB1 9746.580 9998.810 Act Sins 6.125 4.500 MWD+IFR+MS Z-68PB1 f Z-68PB1 10031.660 10031.660 Act Sins 6.125 4.500 MWD+IFR+MS Z -68P81 1 Z-68PB1 10062.380 10127.540 Act Sine 6.125 4.500 MWD Z-68 / Z-68 10442.510 10538.000 Act Stns 6.125 4.500 BLIND Z-681 Z-68 Legal Descrlpt]on: Northln9 (Y) Eeeting X. Surface, 4290.4 FSL 2506.7 FEL S19 T11N R12E UM 59591 600170.920 SHL 3373 FSL 4355 FEL 20 T11N R12EUM 5958229,380 603617,330 Drilling Office 2.6.1166.0 Prudhoe Bay Unit - WOA2-PAD1Z-68)Z-6812-68 8/26/2013 10:30 AM Page 3 of 3 Final Definitive Survey Verified and Signed -off All targets and/or well position Wectives have been achieved. ❑a Yes ❑ No I have checked to the best of my ability that the following data is correct, 171 Surface Coordinates ED D6011nation & Convergence El ORS Survey Corrections - +' ❑p Survey Too] Codes SLB DE: \ Drilling Office 2.6.1166.0 Prudhoe Bay Unit - WOA2-PAD1Z-68)Z-6812-68 8/26/2013 10:30 AM Page 3 of 3 I' 7`D a 13 -a ?3 Ferguson, Victoria L (DOA) From: Rose, John G (ASRC) <John.G.Rose@bp.com> Sent: Friday, August 23, 2013 3:48 PM To: Ferguson, Victoria L (DOA) Subject: RE: Z-68 7" Casing Cement Job Attachments: Z-68-quicklook cement bond interpretation above OA.pptx Victoria, Please note the attached file which summarizes the recent 7" USIT log on the Z-68 well as it relates to the isolation of the SB_OA (4461' TVDss). Given the results of this log, we request to move forward with our planned rig operations of running our 4-1/2" production tubing. I will standby for your response. Thanks - jr Don't hesitate to give me a call at 748-5223 if needed. From: Ferguson, Victoria L (DOA)[mailto:victoria.ferguson@alaska.gov] Sent: Fri 8/23/2013 8:22 AM To: Rose, John G (ASRC) Subject: RE: Z-68 7" Casing Cement Job John, I will be available whenever you are ready to review. I will be out briefly from 12:30 to 1:00 - My cell is 242-9156- Thanx, Victoria From: Rose, John G (ASRC) [mailto:John.G.Rose@bp.com] Sent: Friday, August 23, 2013 8:15 AM To: Ferguson, Victoria L (DOA) Subject: RE: Z-68 7" Casing Cement Job Victoria, As we ran and cemented our 4-1/2" production liner last night on the Z-68 well (cut the well short and ran the liner to 10,210' MD / 9063'TVD), we are now in the hole with a -line running a USIT log on the 7" casing to confirm cement above the SB_OA. That being said, we expect to be able to provide a comment as the condition of the cement above the SB_OA by early to mid-afternoon today and assuming sufficient cement is present, we would like to move directly in to running our 4-1/2" completion in this well as soon as possible post this USIT work. Therefore, will you be able to review the results of this logging work this afternoon so we can hopefully move forward on this well w/o delay? Give me a call if you like and thanks for your consideration on this matter. - jr John G. Rose BP Staff Engineer Anchorage, AK rosell@bp.com 907/564-5271 Office 907/748-5223 Cell 907/243-8813 Home From: Ferguson, Victoria L (DOA)[mailto:victoria.ferguson@alaska.gov] Sent: Tuesday, August 13, 2013 10:12 AM To: Rose, John G (ASRC) Subject: RE: Z-68 7" Casing Cement Job John, Please run a USIT or CBL to evaluate cement quality and TOC. Thanx, Victoria From: Ferguson, Victoria L (DOA) Sent: Sunday, August 11, 2013 6:01 PM To: Rose, John G (ASRC) Subject: Re: Z-68 7" Casing Cement Job Thanx for the update. I'll get back with you on the cement. Sent from my iPhone On Aug 11, 2013, at 3:01 PM, "Rose, John G (ASRC)" <John.G.Rose@bp.com> wrote: Victoria, We pumped our 7" casing cement job on 8/10/13 with the intent of bringing cement to 3864' MD which would have been —500' MD below the surface casing shoe and —650' TVD above the top of the SB_Na . These depths would have also satisfied the State's requirement for bringing cement 500' above the upper most "significant" oil bearing zone (in this case is the SB_OA). We calculated our excess cement requirements at 30% and pumped 186 bbls of 11.5 ppg LiteCrete lead followed by 21 bbls of 15.8 ppg tail. The cement job went per plan without any losses noted and bumping the plug on strokes. We have reviewed this cement job by analyzing our lift pressure which fell short of our pre -job modeling (640.5 psi actual vs 846.7 psi as per design), we now estimate the TOC to be at 4442' MD which does fall short of the 500' State requirement. Our calculated footage above the SB—OA is 378' MD. Our plan is to move forward on this well to drill and case the production hole which does not limit any path - forward work that may be needed to address the 500' of cement issue above the SB -OA. If you have any questions or concerns, please advise. John G. Rose BP Staff Engineer Anchorage, AK rosell@bp.com 907/564-5271 Office 907/748-5223 Cell 907/243-8813 Home ii:ir Ferguson, Victoria L (DOA) From: Rose, John G (ASRC) <John.G.Rose@bp.com> Sent: Friday, August 23, 2013 8:15 AM To: Ferguson, Victoria L (DOA) Subject: RE: Z-68 7" Casing Cement Job Victoria, As we ran and cemented our 4-1/2" production liner last night on the Z-68 well (cut the well short and ran the liner to 10,210' MD / 9063'TVD), we are now in the hole with a -line running a USIT log on the 7" casing to confirm cement above the SB_OA. That being said, we expect to be able to provide a comment as the condition of the cement above the SB_OA by early to mid-afternoon today and assuming sufficient cement is present, we would like to move directly in to running our 4-1/2" completion in this well as soon as possible post this USIT work. Therefore, will you be able to review the results of this logging work this afternoon so we can hopefully move forward on this well w/o delay? Give me a call if you like and thanks for your consideration on this matter. - jr John G. Rose BP Staff Engineer Anchorage, AK rosel1@bp.com 907/564-5271 Office 907/748-5223 Cell 907/243-8813 Home From: Ferguson, Victoria L (DOA)[ma iIto: victoria. ferauson@alaska.gov] Sent: Tuesday, August 13, 2013 10:12 AM To: Rose, John G (ASRC) Subject: RE: Z-68 7" Casing Cement Job John, Please run a USIT or CBL to evaluate cement quality and TOC. Thanx, Victoria From: Ferguson, Victoria L (DOA) Sent: Sunday, August 11, 2013 6:01 PM To: Rose, John G (ASRC) Subject: Re: Z-68 7" Casing Cement Job Thanx for the update. I'll get back with you on the cement. Sent from my iPhone On Aug 11, 2013, at 3:01 PM, "Rose, John G (ASRC)" <John.G.Rose@bp.com> wrote: Victoria, We pumped our 7" casing cement job on 8/10/13 with the intent of bringing cement to —3864' MD which would have been —500' MD below the surface casing shoe and ^'650' TVD above the top of the SB_Na . These depths would fere also satisfied the State's requirement fog .,ringing cement 500' above the upper most "significant" oil bearing zone (in this case is the SB_OA). We calculated our excess cement requirements at 30% and pumped 186 bbls of 11.5 ppg LiteCrete lead followed by 21 bbls of 15.8 ppg tail. The cement job went per plan without any losses noted and bumping the plug on strokes. We have reviewed this cement job by analyzing our lift pressure which fell short of our pre -job modeling (640.5 psi actual vs 846.7 psi as per design), we now estimate the TOC to be at 4442' MD which does fall short of the 500' State requirement. Our calculated footage above the SB_OA is 378' MD. Our plan is to move forward on this well to drill and case the production hole which does not limit any path -forward work that may be needed to address the 500' of cement issue above the SB -OA. If you have any questions or concerns, please advise. John G. Rose BP Staff Engineer Anchorage, AK rosel1@bp.com 907/564-5271 Office 907/748-5223 Cell 907/243-8813 Home CEMENT BOND LOG INTER'3RETATION: WELLOG Acoustic Log Interpretation REVISED 10-15-2009 © 2004 - 2009 All Rights Reserved Part III, page 5 CEMENT BOND LOG: Page 1 of 3 Acoustic logging is also used for determination of in cased wells. This type of log is most often referred to as a Cement Bond Log (CBL). Acoustic signals propagated in steel casing are observed to have large amplitude in free casing because much of the energy is retained in the casing. Whereas the opposite effect is found in casing that is in contact with a solid such as cement. The casino signor! is much smaller because the energy is coupled into the surrounding cement and formation. The thin plate velocity of sound in steel is approximately 5300 meters per second (188 microseconds per meter). 1 meter = 39 inches (approx) and 3 ft = 36 inches therefore .92 * 188 = 174 microseconds. A receiver having 3 feet spacing will receive the casing signal (first arrival) at 174 microseconds plus an additional period allowing for transit time thru the borehole fluid. Consideration for fluid travel time at approximately 200 microseconds per foot shows that for example in a 12 inch casing, 6 inches from tool center to casing and 6 inches from casing to tool will add 1 foot = 200 microseconds to total travel time. Variation in total travel time due to fluid type will cause the casing signal to move or change position in relative time. A receiver signal "time gate" is set at the time of the expected casing signal. The casing signal will be the first arrival at the receiver in free casing. The signal amplitude is recorded. Signal amplitude is affected by the acoustic coupling of cement in the annulus (space between the casing and formation). Acoustic energy is absorbed when cement is in contact with the casing and formation. CEMENT BOND LOG INTERPRETATION: In general terms, A high signal amplitude indicates poor cement bond. A low signal amplitude indicates good cement bond. Amplitude is normally presented on a scale of 0 to 100 percent amplitude. No cement bond is represented by 100 percent amplitude. Due to the fact that well cemented pipe can never reduce the signal to "zero", a good reference for zero signal is the best cemented portion of the cased hole. Using information obtained from a Variable Density (waveform) display referred to as a VDL display, it is possible to observe the entire receiver wave train. When http://www.wellog.com/webinar/inteip_p3_p5.htm 8/23/2013 CEMENT BOND LOG INTER. )RETATION: Page 2 of 3 cementation is complete (good bond) from casing to cement to formation, it is possible to observe waveform shift in delta- time in the later arrivals that can be correlated to open -hole acoustic delta -time logs. This is referred to as "formation" signal on the CBL. CBL ATTENUATION: The measurement of attenuation measured in decibels (dB) is obtained from the amplitude as follows: Attenuation = 20/13 x Log10(A/Ao) Where: Attenuation is measured in decibels abbreviated dB. Ao is the transmitter amplitude measured in millivolts A is the receiver amplitude measured in millivolts D is the distance from the transmitter to receiver (spacing) Note: Attenuation refers to the reduction of amplitude. Therefore, attenuation is measured in —dB. Commercially available CBL services offer a log containing the measurement of amplitude and VDL. VARIABLE DENSITY LOG: The variable density dis la is a Z axis representation of the receiver waveform. The display is usually monochrome (black and white) however in some presentations, the display is in color. FRACTURE FINDER LOG: A variation in application of the VDL is in an open -hole environment that is used for the purpose of defining fractures in surrounding formations. The service is referred to as a fracture finder or micro -seismogram log. RADIAL BOND LOG: Acoustic bond tools have been developed that have segmented receivers. A typical eight segment array is arranged radially around the circumference of the tool. Each segment has a view of 45 degrees of the total 360 degree circumference. The advantage of this configuration is that eight discrete receivers that are able to define vertical channels in cement. CASING INSPECTION/CEMENT QUALITY: Ultrasonic waveforms having frequencies that range from 200 KHz to 700 KHz are used. A rotating acoustic sensor is employed to measure acoustic energy through a 360 rotation. The Ultrasonic Imager Tool (Schlumberger USIT) is an example. It performs the functions of cement evaluation, casing inspection, corrosion detection and monitoring, detection of internal and external damage or deformation and casing thickness analysis for collapse and bust pressure calculations. http://www.wellog.com/webinar/interp_p3_p5.htm 8/23/2013 CEMENT BOND LOG INTERPRETATION: Page 3 of 3 ACOUSTIC BOREHOLE IMAGER: The acoustic borehole imager (ABI) televiewer is a tool that acoustically scans a borehole — usually in open -hole. A very small acoustic receiver aperture is used to increase the acoustic resolution. A stepper motor rotates the acoustic aperture and at each step records the acoustic signature of the borehole. Logging speeds are slow. The log is an acoustic image of the borehole that defines structural details in a relatively high resolution format. CONTINUE: FORMATION EVALUATION http://www.wellog.com/webinar/interp_p3_p5.htm 8/23/2013 STATE OF ALASKA AL, A OIL AND GAS CONSERVATION COfv ;SIGN REPORT OF SUNDRY WELL OPERATIONS RECEIVED AUG 212013 1. Operations Performed: ❑ Abandon ❑ Repair Well ❑ Plug Perforations ❑ Perforate ❑ Re -Enter Suspended Well ❑ Alter Casing ❑ Pull Tubing ❑ Stimulate - Frac ❑ Waiver ® Other ❑ Change Approved Program ❑ Operation Shutdown ❑ Stimulate - Other ❑ Time Extension Top Job 2. Operator Name: 4. Well Class Before Work: 5. Permit To Drill Number: BP Exploration (Alaska) Inc. ❑ Exploratory ❑ Stratigraphic ® Development ❑ Service 213-093 3. Address: 6. API Numbe P.O. Box 196612, Anchorage, Alaska 99519-6612 50.029-23493-00-00 7. Property Designation (Lease Number): 8. Well Name and Number: ADL 028262 • PBU Z-68 9. Logs (list logs and submit electronic and printed data per 20AAC25.071): 10. Field / Pool(s): Prudhoe Bay / Prudhoe Bay 11. Present well condition summary: Total depth: measured 3297' feet Plugs: (measured) None feet true vertical 3179' feet Junk: (measured) None feet Effective depth: measured 3297' feet Packer: (measured) None feet true vertical 3179' feet Packer: (true vertical) None feet Casing Length Size MD TVD Burst Collapse Structural Conductor 80' 20" 80' 80' 1530 520 Surface 3280' 9-5/8" 3280' 3163' 5750 3090 Intermediate Production Liner Perforation Depth: Measured Depth: None feet True Vertical Depth: None feet Tubing (size, grade, measured and true vertical depth): None None None None Packers and SSSV (type, measured and true vertical depth): None None None 12. Stimulation or cement squeeze summary: Intervals treated (measured): Treatment description including volumes used and final pressure: Cement 9-5/8" Surface Casing with 290 Bbls, 1.91 Yield (852 sx) LiteCrete Cement to surface. 13 Representative Daily Average Production or Injection Data Oil -Bbl Gas-Mcf Water -Bbl Casing Pressure Tubing Pressure Prior to well operation: 0 0 0 0 0 Subsequent to operation: 0 0 0 0 0 14. Attachments: ❑ Copies of Logs and Surveys run 15. Well Class after work: ❑ Exploratory ❑ Stratigraphic ® Development ❑ Service ® Daily Report of Well Operations 16. Well Status after work: ®Oil ❑Gas ❑ WDSPL ❑ Well Schematic Diagram ❑ GSTOR ❑ WINJ❑WAG ❑ GINJ ❑ SUSP El 17. 1 hereby certify that the foregoing is true and correct to the best of my knowledge. Sundry Number or N/A if C.O. Exempt: Contact: John Rose, 564-5271 Email: John.G.Rose@bp.com 313-417 Printed Na e: Joe as Title: Drilling Technologist / Signature: Phone: 564-4091 Date: 512,1 Form 10-404 RevisWd 10/2012 v ' l /Z, J " ",1:711 c I / -- �C.��� 3 ®pbW�prigj V n� North America -ALASKA- BP Operation Summary Report Page 1 QW - Common Well Name: Z-68 07:30 3.00 AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: X3 -013H1 -C: DRILL (8,820,870.00) Project: Prudhoe Bay Site: PB Z Pad 09:30 12:00 Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: Rig Contractor: PARKER DRILLING CO. 4.00 MOB UWI: Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) 2.50 MOB Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) P (usft) 21:30 7/25/2013 00:00 - 04:30 4.50 RIGD P P PRE BEGIN DON EVENT WITH PARKER 273 AT 04:30 07:30 3.00 RIGID P 07:30 09:30 2.00 RIGID P 09:30 12:00 2.50 MOB P 12:00 16:00 4.00 MOB P 1600 18:30 2.50 MOB P 18:30 21:00 2.50 MOB P 21:00 21:30 0.50 MOB P 21:30 00:00 2.50 MOB P 7/26/2013 00:00 01:00 1.00 MOB P 01:00 02:00 1.00 RIGU P 02:00 03:30 1.50 03:30 05:00 1.50 Printed 8/20/2013 11:43:05AM RIGU P 00:00 ON 7/25/2013 GENERAL RIG DOWN OPERATIONS ON Z-114 - DISCONNECT INTERCONNECTS BETWEEN MODULES, PULL CUTTINGS BOX AWAY FROM RIG SECURE OFFLINE ST -80, STABBING BOARD, & IRON DERRICKMAN IN STORAGE POSITION PREPARE RIG FLOOR FOR SKIDDING PERFORM DERRICK INSPECTION SECURE TOP DRIVE, DISCONNECT BLOCKS AND BRIDLE UP TO LOWER MAST PRE MOVE ROOF WALKWAYS. PERFORM FINAL WALKDOWNS. SKID CATTLE CHUTE AND RIG FLOOR INTO RIG MOVE POSITION. PRE LOWER MAST - FINAL SLACKOFF WEIGHT ABOVE STORAGE RACK = 408 KLBS. PRE SEPARATE UTILITY MODULE AND MUD MODULE FROM DRILL MODULE. BACK DRILL MODULE OFF OF WELL. STAGE ALL THREE MODULES ON PAD. PRE MOVE UTILITY MODULE AND DRILL MODULE TO Z-68 WELL LOCATION (OPPOSITE _ CORNER OF PAD FROM Z-114) PRE CH2M HILL CRANE ONSITE TO LIFT DUMMY WELLHOUSE OFF OF Z-114. PARKER LOADER MOVE WELLHOUSE AND SPOT _OVER Z-68 CONDUCTOR. PRE SPOT/CENTER DRILL MODULE OVER Z-68. - 21:00 - RIG ON LOCATION WHEN FIRST MODULE SPOTTED OVER WELL. PRE SPOT UTILITY MODULE UP AGAINST DRILL MODULE. - ELECTRICIAN ONSITE TO RIG UP CONNECTOR - -- PRE MOVE MUD MODULE DOWN PAD AND SPOT UP AGAINST DRILL MODULE PRE COMPLETE MATING MUD MODULE UP TO DRILL MODULE. PRE RAISE MAST - PICKUP WEIGHT OFF STORAGE RACK= 528 KLBS PRE SHIM UTILITYAND MUD MODULES. INSTALL WALKWAYS AND ROOF CAPS. RIGU P PRE SKID RIG FLOOR AND CATTLE INTO DRILLING POSITION. RAISE PIPE CAT. North America - ALASKA - BP Page 2 Q08- Operation Summary Report Common Well Name Z-68 AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: X3-013H1-C: DRILL (8,820,870.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: Rig Contractor. PARKER DRILLING CO. UWI: Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 05:00 - 13:00 8.00 BOPSUR P PRE NIPPLE UP HIGH PRESSURE RISERS AND 21-1/4" ANNULAR DIVERTER. NIPPLE UP FLOW RISER AND INSTALL FLOWLINE. SIMOPS: INSTALL MUD LINES BETWEEN MODULES BRIDLE DOWN, SECURE LINES IN DERRICK, PIN TORQUE TUBE RIG UP BLOCKS TO TOP DRIVE AND PREPARE DERRICK 13:00 17:30 4.50 RIGU P PRE GENERAL RIG UP OPERATIONS RIG UP IRON DERRICKMAN AND FORUM CRANE INSTALL MOUSE HOLES COMPLETE RIGGING UP ALL FLOWLINE AND ELECTRAL LINES BETWEEN MODULES ADD TWO 40' SECTIONS ONTO DIVERTER LINE FOR PROPER CLEARANCE CHANGEOUT ALL VALVES AND SEATS ON MUD PUMPS SPOT CUTTINGS BOXAND PREPARE PITS TAKE ON 8.6 PPG DRILPLEX SPUD MUD_- 17:30 19:00 1.50 BOPSUR P PRE PERFORM DIVERTER FUNCTION TEST. WITNESS WAIVED BYAOGCC REPRESENTATIVE JEFF TURKINGTON. PERFORM ACCUMULATOR DRAWDOWN TEST. KINFE VALVE OPENING TIME = 24 SEC, DIVERTER CLOSING TIME = 37 SEC (PASS, SEE ATTACHED STATE DOCUMENTATION �� FORM) 19:00 20:00 1.00 RIGU P PRE ACCEPT PARKER 273 RIG AT 19:00 ON I 7/26/2013. GENERAL RIG UP OPERATIONS TAKE ON 8.6 PPG DRILPLEX SPUD MUD CONFIRM ALIGNMENT OF TOP DRIVE WITH JOINT OF PIPE IN ROTARY TABLE INSTALL ROOF WALKWAYS 2000 - 22:30 2.50 RIGU P PRE LOAD BHA INTO PIPE BARN AND ONTO RIG FLOOR. MAKEUP FIRST STAND OF DRILL j COLLARS AND RACK BACK. CONTINUE TO TAKE ON 8.6 PPG DRILPLEX SPUD MUD 22:30 23:00 0.50 RIGU P PRE HOLD RIG EVACUATION/DIVERTER (D3) DRILL AND WITH MASSIE CREW. 23:00 - 00:00 1.00 RIGU P PRE BUILD FIRST 43' OF DRILLING BHA ON RIG FLOOR AND CONTINUE LOADING MUD IN I PITS. 7/27/2013 00:00 02:30 2.50 RIGU P i PRE COMPLETE MAKING UP FIRST 43' OF DRILLING BHA, PICKUP AND RACK BACK 2 OF 6 STANDS 4" HWDP CONTINUE LOADING 8.6 PPG DRILPLEX MUD IN PITS CALIBRATE BLOCK HEIGHT WITH SLB MWD. 02:30 - 03:00 0.50 RIGU P PRE HOLD RIG EVACUATION/DIVERTER (D3) DRILL, AAR AND PRE-SPUD WITH RUNYON CREW. 03:00 05:30 2.50 RIGU P PRE PICKUP REMAINING 4 STANDS 4" HWDP. LOAD AND TREAT REMAINDER OF FIRST 870 BBLS 8.5 PPG DRILPLEX SPUD MUD. Printed 8/20/2013 11:43:05AM Common Well Name: Z-68 Event Type: DRL- ONSHORE (DON) Project: Prudhoe Bay Rig Name/No.: PARKER 273 Rig Contractor: PARKER DRILLING CO. Active datum: Z-68 P273 ACTUAL @102.82usft (at Date From - To Hrs (hr) 05:30 06:00 0.50 06:00 07:00 1.00 07:00 - 14:30 7.50 North America - ALASKA - BP Page 3 Operation Summary Report Start Date: 7/25/2013 End Date: Site: PB Z Pad — Spud Date/Time: 7/27/2013 7:00:OOAM Mean Sea Level) Task Code NPT NPT Depth Phase (usft) RIGU P PRE RIGU P PRE DRILL P 14:30 - 15:30 1.00 DRILL P AFE No X3 -013H1 -C: DRILL (8,820,870.00 ) Rig Release: UWI: Description of Operations RIG UP E -LINE AND LOAD GYRODATA TOOLS TO RIG FLOOR RUN IN HOLE WITH 12-1/4" DRILLING ASSEMBLY FROM SURFACE TO TAG ICE IN CONDUCTOR AT 50' MD. FILL SYSTEM. PERFORM LEAKTIGHT PRESSURE TEST ON SURFACE LINES. CLEANOUT CONDUCTOR FROM 50' MD 12-1/4" NEW HUGHES VM -3 MILL TOOTH SLB POWERPAKA962SP PDM (1.83° BEND) W/ NON -PORTED FLOAT, UBHO SUB SURF SPUD Z-68 WITH PARKER 273 AT 07:00 ON 7/27/2013. DIRECTIONAL DRILL 12-1/4" SURFACE HOLE FROM 127MD TO 509' MD (382' IN 7.5 HRS = 51 FPH WITH CONNECTIONS AND SURVEYS) - 450 GPM, 600 PSI ON, 500 PSI OFF, 40 RPM, 151 BIT RPM, 1-2KFT-LBS TORQUE ON, 1 KFT-LBS TORQUE OFF - INSTANTANEOUS ROTATING ROP = 90-120 FPH, SLIDING = 60-90 FPH GYRO SURVEY EVERY STAND ART = 2.2 HRS, AST = 1.36 HRS, ADT = 3.56 HRS WIPE HOLE 30 FT PRIOR TO CONNECTIONS, FULL PUMP RATE UP, PUMPS OFF DOWN MW IN/OUT = 8.6/ 8.8 PPG GRAVELAND OCCASIONAL WOOD IN CUTTINGS AT SHAKERS SURF —CUTTINGS WELL PRIOR TO PULLING OFF BOTTOM (STATIC). PULL OUT OF HOLE WITH 12-1/4" DRILLING ASSEMBLY FROM 509' MD TO BHAAT 144' MD. 15:30 - 1700 1.50 DRILL P SURF RACK BACK 12-1/4" BHAAND INSPECT BIT 17:00 - 19:30 2.50 DRILL P Printed 8/20/2013 11:43:05AM (GRADE 1 -1 -IN GUAGE). ELECT TO RE -RUN SAME BIT. DIAL DOWN MOTOR BEND FROM _ 1.83° TO 1.5°. SURF MAKEUP MWD TOOLS AND RUN IN HOLE WITH 12-1/4" DRILLING ASSEMBLY FROM SURFACE TO PREVIOUSLY DRILLED DEPTH OF 509' MD. WASH DOWN FINAL STAND THROUGH 30' FILL. - 12-1/4" NEW HUGHES VM -3 MILL TOOTH - SLB POWERPAKA962SP PDM (1.83° BEND) W/ NON -PORTED FLOAT, UBHO SUB DIR/GR/RES MWD TOOLS North America - ALASKA - BP Operation Summary Report Page Common Well Name: Z-68 AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: X3 -013H1 -C: DRILL (8,820,870.00) �I Project: Prudhoe Bay kSite: PB Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: Rig Contractor: PARKER DRILLING CO. UWI: Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) SURF DIRECTIONAL DRILL 12-1/4" SURFACE HOLE 19:30 - 21:30 1 2.00 DRILL P 121:30 22:30 22:30 - 00:00 1.00 DRILL 1.50 DRILL P P 7/28/2013 00.00 - 15:00 15.00 DRILL P Printed 8/20/2013 11,43:05AM FROM 509' MD TO 567' MD WITH GYRO SURVEYS. - 500 GPM, 1100-1150 PSI ON, 1025 PSI OFF, 40 RPM, 151 BIT RPM, 3 KFT-LBS TORQUE ON, 1 KFT-LBS TORQUE OFF - INSTANTANEOUS ROTATING ROP = 130 FPH, SLIDING = 125 FPH - ART = 0.40 HRS, AST = 0.55 HRS, ADT = 0.95 HRS WIPE HOLE 30 FT PRIOR TO CONNECTIONS, FULL PUMP RATE UP, PUMPS OFF DOWN MW IN/OUT = 8.7 PPG, LSYP = 60 GYRO SURVEY EVERY STAND UNTIL 567' MD, 2 CLEAN MWD SURVEYS OBTAINED BY 567' MD. RELEASE GYRO SERVICES AT 21:30 SURF RIG DOWN HALLIBURTON E -LINE AND GYRODATA. SURF DIRECTIONAL DRILL 12-1/4" SURFACE HOLE FROM 567' MD TO 717' MD AT MIDNIGHT ( 150' IN 1.5 HOURS = 100 FPH WITH CONNECTIONS) - SAME DRILLING PARAMETERS AS 119:30-21:30 TIME INTERVAL. - ART = 0.79 HRS, AST = 0.25 HRS, ADT = 1.04 HRS MWD SURVEY EVERY STAND GRAVELAND OCCASIONAL WOOD IN CUTTINGS AT SHAKERS FLOW PADDLE DEFEATED 127' MD TO 717' MD (ALLOWABLE PER PTD) SURF DIRECTIONAL DRILL 12-1/4" SURFACE HOLE FROM 717' MD AT MIDNIGHT TO 1790' MD, 100' ABOVE BASE OF PERMAFROST (1073' IN 15 HRS = 72 FPH WITH CONNECTIONS) - 500 GPM, 1050-1550 PSI ON, 950-1250 PSI OFF, 40 RPM, 151 BIT RPM, 3-5 KFT-LBS TORQUE ON, 2-3.5 KFT-LBS TORQUE OFF, 25-30 KLBS WOB - INSTANTANEOUS ROTATING ROP = 125-175 FPH, SLIDING = 60-100 FPH WIPE HOLE 30 FT PRIOR TO CONNECTIONS MW IN/OUT = 8.7 PPG MIXTURE OF GRAVEL AND CLAY AT SHAKERS, NO INDICATIONS OF RUNNING GRAVELS -SLIDE 40'-70' PER STAND TO BUILD INC FROM 3° TO 23° AND TURN AZI FROM 44° TO 174° - ADT = 10.33 HRS, ART = 3.75 HRS, AST = 6.58 HRS North America - ALASKA - BP Page 5 Operation Summary Report Common Well Name Z-68 AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: X3-013H1-C:DRILL (8,820,870.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00 OOAM Rig Release: Rig Contractor: PARKER DRILLING CO. UWI: Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 15:00 - 17:00 2.00 DRILL P SURF PLANNED WIPER TRIP FROM BASE OF 17:00 - 18:30 1.50 DRILL P 18:30 19:30 1.00 DRILL P 19:30 - 00:00 4.50 DRILL P 7/29/2013 0000 01:00 1.00 DRILL P Printed 8/20/2013 11:43:05AM PERMAFROST: BACKREAM OUT OF THE HOLE WITH 12-1/4" DRILLING ASSEMBLY FROM 1790' MD TO 1317' MD WHILE CIRCULATING HOLE CLEAN WITH 3 BOTTOMS U P. - 500 GPM, 1280 PSI, 80 RPM, 3 KFT-LBS TORQUE - INITIAL PU WEIGHT OFF BOTTOM = 90 KLBS, SO = 80 KLBS - FLOWCHECK WELL PRIOR TO PULLING OFF BOTTOM (STATIC) SURF PLANNED WIPER TRIP FROM BASE OF PERMAFROST: PULL OUT OF THE HOLE WITH 12-1/4" DRILLING ASSEMBLY ON ELEVATORS FROM 1317' MD TO JARS AT 291' MD - NO HOLE ISSUES ENCOUNTERED SURF PLANNED WIPER TRIP FROM BASE OF PERMAFROST: RUN IN HOLE WITH 12-1/4" DRILLING ASSEMBLY ON ELEVATORS FROM JARS AT 291' MD TO PREVIOUSLY DRILLED DEPTH OF 1790' MD. NO FILL ENCOUNTERED ON TRIP IN HOLE SURF DIRECTIONAL DRILL 12-1/4" SURFACE HOLE FROM 1790' MD TO 2454' MD AT MIDNIGHT (664' IN 4.5 HRS = 148 FPH WITH CONNECTIONS) - 600-650 GPM, 1950-2650 PSI ON, 1850-2250 PSI OFF, 80 RPM, 214-224 BIT RPM, 6-8 KFT-LBS TORQUE ON, 3-4 KFT-LBS TORQUE OFF, WOB = 25-32 KLBS - INSTANTANEOUS ROTATING ROP = 300-350 FPH, SLIDING = 200-250 FPH - WIPE HOLE 30 FT PRIOR TO EVERY CONNECTION - MW IN/OUT = 8.9 PPG - BPERM: 1890' MD, 1861' TVD, 13' LOW VS PROGNOSIS, NO INDICATIONS OF HYDRATES BELOW BASE OF PERMAFROST - PERFORM 15'-30' MAINTENANCE SLIDES EACH STAND DURING TANGENT - ADT = 2.33 HRS, ART = 1.5 HRS, AST = 0.83 HRS - SIMOPS: BUILD STANDS 4" DRILLPIPE SURF RACK BACK ONE STAND. CIRCULATE AND CONDITION MUD. North America - ALASKA - BP Operation Summary Report Page Common Well Name: Z-68 AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: X3 -013H1 -C: DRILL (8,820,870.00) Project: Prudhoe Bay Site: PB Z Pad 11:30 Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: Rig Contractor: PARKER DRILLING CO. UWI: Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 01:00 - 09:00 8.00 DRILL P SURF DIRECTIONAL DRILL 12-1/4" SURFACE HOLE 09:00 - 11:30 2.50 DRILL P 11:30 15:30 4.00 DRILL P 1530 16:30 1.00 DRILL P 16:30 - 18:30 2.00 DRILL P Printed 8/20/2013 11:43:05AM FROM 2454' MD TO SECTION TOTAL DEPTH IN SV1 SAND AT 3297' MD 3179' TVD (843' IN 9 HRS = 94 FPH WITH CONNECTIONS) - 650 GPM, 2750-3000 PSI ON, 2450-2600 PSI OFF, 80 RPM, 224 BIT RPM, 6-7.5 KFT-LBS TORQUE ON, 3.5-4.5 KFT-LBS TORQUE OFF, WOB = 25-30 KLBS - INSTANTANEOUS ROTATING ROP = 225-275FPH, SLIDING = 75-100 FPH - WIPE HOLE 30 FT PRIOR TO EVERY CONNECTION MW IN/OUT = 9.2 PPG MINOR HYDRATES NOTED 3118' MD - 3210' MD IN SV1 INC/AZI AT TOTAL DEPTH = 19°/175° = ADT = 4.15 HRS, ART = 3.19 HRS, AST = 0.96 HRS, TOTAL BIT HOURS = - SIMOPS: OPEN AND INSPECT BOP RAMS (HIGH GOR WELL), PROACTIVELY CHANGEOUT UPPER DOOR SEALS. CONTINUE TO MAKEUP 4" DRILLPIPE STANDS OFFLINE. SURF PLANNED WIPER TRIP TO BASE OF PERMAFROST: BACKREAM OUT OF HOLE WITH 12-1/4" DRILLING ASSEMBLY FROM SECTION TD AT 3297MD TO 2920' MD WHILE CIRCULATING 3 BOTTOMS UP. - INITIAL PU WEIGHT OFF BOTTOM = 127 KLBS, SO = 92 KLBS, ROT = 102 KLBS - 650 GPM, 2580 PSI, 100 RPM, 4 KFT-LBS TORQUE - MONITOR WELL PRIOR TO PULLING OUT OF HOLE (STATIC) SURF PLANNED WIPER TRIP TO BASE OF PERMAFROST: UNSUCCESSFULLY ATTEMPT TO PULL OUT OF HOLE ON ELEVATORS. BACKREAM OUT OF HOLE WITH 12-1/4" DRILLING ASSEMBLY FROM 2290' MD TO 1500' MD (390' ABOVE SPERM). - 650 GPM, 2000-2350 PSI, 100 RPM, 4-5 KFT-LBS TORQUE SURF PLANNED WIPER TRIP TO BASE OF PERMAFROST: TRIP IN HOLE WITH 12-1/4" DRILLIN GASSEMBLY ON ELEVATORS FROM 1500' MD TO HOLE SECTION TO AT 3297' MD. - CIRCULATE NUT PLUG SWEEP ROUND TRIP. SWEEP RETURN TIMING AT SHAKERS INDICATES HOLE WITH 10% WASHOUT NO HOLE ISSUES OR FILL ENCOUNTERED SURF BACKREAM OUT OF HOLE WITH 12-1/4" DRILLING ASSEMBLY FROM SECTION TO AT 3297' MD TO 2920' MD WHILE CIRCULATING 3 BOTTOMS UP. - INITIAL PU WEIGHT OFF BOTTOM = 127 KLBS, SO = 92 KLBS, ROT = 103 KLBS - 650 GPM, 2580 PSI, 100 RPM, 3 KFT-LBS TORQUE, North America - ALASKA - BP Page 7 Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 18:30 - 19:30 1.00 DRILL P SURF PULL OUT OF HOLE WITH 12-1/4" DRILLING 19:30 - 23:30 2330 00:00 7/30/2013 00:00 - 0400 04:00 - 15:30 4.00 DRILL P 0.50 CASING P 4.00 CASING P 11.50 I CASING P ASSEMBLY ON ELEVATORS FROM 2920' MD TO BHAAT 938' MD, RACKING BACK 4" DRILLPIPE NO HOLE ISSUES ENCOUNTERED, HOLE TAKING CORRECT FILL SURF RACK BACK HWDP AND (1) STAND DRILL COLLARS. LAYDOWN 12-1/4" DRILLING ASSEMBLY. STABILIZERS IN GAUGE. GRADE NEW HUGHES VM -3 1-6-2_/16" OUT OF GUAGE. SURF CLEAN AND CLEAR RIG FLOOR FOR RUNNING CASING SURF RIG UP TO RUN 9-5/8" CASING. HOLD PJSM WITH RIG TEAM ABOUT RUNNING CASING. - VOLANT TOOL WITH LONG BALES AND BALE EXTENSIONS, SIDE DOOR ELEVATORS PERFORM DUMMY RUN WITH LANDING JOINT AND 9-5/8" CASING HANGER. SURF RUN 9-5/8", 40#, L-80, BTC SURFACE CASING FROM SURFACE TO PLANNED LANDING DEPTH AT 3287' MD (10' OFF BOTTOM) WITH VOLANT TOOL (NOTE: SEE CEMENT OPERATIONS DETAIL ON 7/31 - CASING SET 7' OFF BOTTOM AT 3280' MD, SEE ATTACHED EXCEL TALLY) - CHECK FLOATS (PASS), SHOE TRACK BAKER-LOK'D - RUN (1) CENTRALIZER LOCKED DOWN 5' FROM SHOE, (1) CENTRALIZER LOCKED DOWN MID JOINT #2, (1) FREE FLOATING CENTRALIZER ON JOINT #3-25 - TORQUE BTC CONNECTIONS WITH TORQUE RINGS TO 10000 FT-KLBS WITH VOLANT TOOL, BEST -O -LIFE 2000 THREAD DOPE - FILL EVERY JOINT AND CIRCULATE EVERY 10TH JOINT DOWN AT 8 BPM - NO HOLE ISSUES ENCOUNTERED - FINAL PUMPS OFF PICKUP WEIGHT= 164 KLBS, SLACKOFF = 125 KLBS STAGE UP PUMPS WHILE WAITING ON CEMT N WAIT 3,297.00 SURF 16:30 - 18:30 2,00 GLM I H TRUCKS TO ARRIVE FOR CEMENT JOB (TRUCKING SHORTAGE). 10 BPM, ICP = 255 PSI SURF CIRCULATE HOLE CLEAN AND CONDITION MUD FOR CEMENTING. 10 BPM, 180-200 PSI RECIPROCATE PIPE IN 20' STROKES WHILE CIRCULATING. PICKUP WEIGHT = 158 KLBS, SLACKOFF = 128 KLBS (PUMPS ON) - CUT MUD YIELD POINT BACK FROM 40 TO 15-20 LB/100FTA2 - MIRU SCHLUMBERGER CEMENTERS AND STAGE SUPPORT TRUCKS. 18:30 - 20:30 2.00 CEMT N SFAL 1 3,297.00 SURF UNSUCCESSFULLY ATTEMPT TO PRESSURE TEST CEMENT LINES. TROUBLESHOOT RESTRICTION IN CEMENT LINE - CONTINUE TO CIRCULATE AND RECIPROCATE; 10 BPM, 175-190 PSI Printed 8/20/2013 11:43:05AM Operation Summary Report Common Well Name: Z-68 AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: X3-013H1-C:DRILL (8,820,870.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: PARKER 273 Spud Date/Time, 7/27/2013 7:00:OOAM Rig Release: Rig Contractor: PARKER DRILLING CO. UWI: Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 18:30 - 19:30 1.00 DRILL P SURF PULL OUT OF HOLE WITH 12-1/4" DRILLING 19:30 - 23:30 2330 00:00 7/30/2013 00:00 - 0400 04:00 - 15:30 4.00 DRILL P 0.50 CASING P 4.00 CASING P 11.50 I CASING P ASSEMBLY ON ELEVATORS FROM 2920' MD TO BHAAT 938' MD, RACKING BACK 4" DRILLPIPE NO HOLE ISSUES ENCOUNTERED, HOLE TAKING CORRECT FILL SURF RACK BACK HWDP AND (1) STAND DRILL COLLARS. LAYDOWN 12-1/4" DRILLING ASSEMBLY. STABILIZERS IN GAUGE. GRADE NEW HUGHES VM -3 1-6-2_/16" OUT OF GUAGE. SURF CLEAN AND CLEAR RIG FLOOR FOR RUNNING CASING SURF RIG UP TO RUN 9-5/8" CASING. HOLD PJSM WITH RIG TEAM ABOUT RUNNING CASING. - VOLANT TOOL WITH LONG BALES AND BALE EXTENSIONS, SIDE DOOR ELEVATORS PERFORM DUMMY RUN WITH LANDING JOINT AND 9-5/8" CASING HANGER. SURF RUN 9-5/8", 40#, L-80, BTC SURFACE CASING FROM SURFACE TO PLANNED LANDING DEPTH AT 3287' MD (10' OFF BOTTOM) WITH VOLANT TOOL (NOTE: SEE CEMENT OPERATIONS DETAIL ON 7/31 - CASING SET 7' OFF BOTTOM AT 3280' MD, SEE ATTACHED EXCEL TALLY) - CHECK FLOATS (PASS), SHOE TRACK BAKER-LOK'D - RUN (1) CENTRALIZER LOCKED DOWN 5' FROM SHOE, (1) CENTRALIZER LOCKED DOWN MID JOINT #2, (1) FREE FLOATING CENTRALIZER ON JOINT #3-25 - TORQUE BTC CONNECTIONS WITH TORQUE RINGS TO 10000 FT-KLBS WITH VOLANT TOOL, BEST -O -LIFE 2000 THREAD DOPE - FILL EVERY JOINT AND CIRCULATE EVERY 10TH JOINT DOWN AT 8 BPM - NO HOLE ISSUES ENCOUNTERED - FINAL PUMPS OFF PICKUP WEIGHT= 164 KLBS, SLACKOFF = 125 KLBS STAGE UP PUMPS WHILE WAITING ON CEMT N WAIT 3,297.00 SURF 16:30 - 18:30 2,00 GLM I H TRUCKS TO ARRIVE FOR CEMENT JOB (TRUCKING SHORTAGE). 10 BPM, ICP = 255 PSI SURF CIRCULATE HOLE CLEAN AND CONDITION MUD FOR CEMENTING. 10 BPM, 180-200 PSI RECIPROCATE PIPE IN 20' STROKES WHILE CIRCULATING. PICKUP WEIGHT = 158 KLBS, SLACKOFF = 128 KLBS (PUMPS ON) - CUT MUD YIELD POINT BACK FROM 40 TO 15-20 LB/100FTA2 - MIRU SCHLUMBERGER CEMENTERS AND STAGE SUPPORT TRUCKS. 18:30 - 20:30 2.00 CEMT N SFAL 1 3,297.00 SURF UNSUCCESSFULLY ATTEMPT TO PRESSURE TEST CEMENT LINES. TROUBLESHOOT RESTRICTION IN CEMENT LINE - CONTINUE TO CIRCULATE AND RECIPROCATE; 10 BPM, 175-190 PSI Printed 8/20/2013 11:43:05AM North America - ALASKA - BP Operation Summary Report Page 8 Common Well Name: Z-68 AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: X3 -013H1 -C: DRILL (8,820,870.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: Rig Contractor: PARKER DRILLING CO. UWI: Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 2030 - 2230 2.00 COAT N SFAL 3,297.00 SURF CONTINUE TO CIRCULATE WHILE SWAPPING 22:30 - 00:00 1.50 CEMT P Printed 8/20/2013 11:43:05AM OUT FRESH WATER TRUCKS FOR CEMENT JOB (FAILED PONY MOTOR ON ORIGINAL TRUCK)- - FILL LINES WITH WATER AND PRESSURE TEST TO 250 PSI LOW AND 4500 PSI HIGH FOR FIVE MIN EACH TO LEAKTIGHT CRITERIA (PASS) SURF HOLD PJSM AND CEMENT 9-5/8" SURFACE CASING (DETAILS OF JOB IN FIRST TIME ENTRY FOR 7/31/13 REPORT). North America - ALASKA - BP Operation Summary Report Page 8 el@B. Common Well Name: Z-68 AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: X3-013H1-C:DRILL (8,820,870.00 ) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: Rig Contractor: PARKER DRILLING CO. UWI: Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth (hr) (u_sft) 7/31/2013 00:00 - 03:30 3.50 CEMT P Printed 8/20/2013 11:43:05AM Phase Description of Operations SURF CEMENT 9-5/8" SURFACE CASING AS FOLLOWS (SEE ATTACHED DOCUMENTATION): - PUMP 100 BBLS OF 10.0 PPG MUDPUSH II SPACER @ 5.0 BPM - DISENGAGE VOLANT TOOL AND RELEASE BOTTOM PLUG - PUMP 310 BBLS LEAD CEMENT (60 BBLS AROUND BACKSIDE) WHEN SUDDEN PRESSURE SPIKE OCCURS. SHUT DOWN PUMPS AND UNABLE TO MOVE PIPE. DISCOVER PLUG IN SURFACE LINES. RE-ROUTE LINE AND RESUME PUMPING AFTER BEING DOWN FOR 1 HR. REGAIN PIPE RECIPROCATION WITH NORMAL DRAG AND FULL RETURNS. PICKUP WEIGHT= 170 KLBS, SLACKOFF = 120 KLBS. - PUMP REMAINING 225 BBLS LEAD CEMENT (TOTAL PUMPED = 534 BBLS, 1570 SACKS OF 11.0 PPG LITECRETE LEAD CEMENT, EXCESS 'VOLUME 350%, YIELD 1.91 CU.FT/SK) @ 5 BPM, RETURNS BEGIN TO DETERIORATE AT 518 BBLS AWAY (LOSSES DURING LEAD = 71 BBLS) - PUMP 85 BBLS, 408 SACKS OF 15.8 PPG CLASS G TAIL @ 5 BPM, EXCESS VOLUME 40% (YIELD 1.17 CU.FT/SK) WITH -47% RETURNS (LOSSES WHILE PUMPING TAIL= 45 BBLS). RECIPROCATE 5-10' STROKES DURING TAIL. - DISENGAGE VOLANT TOOL AND RELEASE TOP PLUG - SLB KICK OFF PLUG WITH 10 BBLS FRESH WATER (NO RETURNS) - LINEUP TO RIG PUMPS AND DISPLACE THROUGH TOP DRIVE WITH 9.2 PPG DRILPLEX MUD. RIG PUMPS 122 BBLS AT 10 BPM, 46 BBLS AT 7 BPM, 54 BBLS AT 5 BPM AND FINAL 3 BBLS AT 2 BPM. NO RETURNS DURING DISPLACEMENT. RECIPROCATE 5-10' STROKES THROUGH FIRST 65 BBLS OF DISPLACEMENT UNTIL HOLE CONDITIONS PREVENT LANDING HANGER ON LANDING RING. CONTINUE TO RECIPROCATE THROUGH REMAINDER OF JOB IN ATTEMPT TO REGAIN RETURNS AND WORK DOWN TO LANDING RING (NEVER ABLE TO GET CLOSE THAN V ABOVE). PICKUP WEIGHT INCREASED TO 195 KLBS. UNABLE TO LAND CASING ON MANDREL HANGER AT END OF JOB (LOSSES DURING DISPLACEMENT = 235 BBLS) - BUMP PLUG WITH FINAL CIRC PRESSURE OF 748 PSI. PRESSURE UP TO 2000 PSI AND HOLD FOR 2 MIN. BLEED OFF PRESSURE AND CHECK FLOATS (HOLDING). PURPOSELY PLACE MANDREL HANGER 7' ABOVE LANDING RING IN PREPARATION FOR EMERGENCY SLIPS AND WACHS CUT FOR SLIP -LOC WELLHEAD.. - ESTIMATED BUMP PRESSURE PER CADE _ -700 PSI North America - ALASKA - BP Page 10 ofd& Operation Summary Report Common Well Name: Z-68 AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: X3-013H1-C: DRILL (8,820,870.00 ) Project: Prudhoe Bay Site: PS Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: Rig Contractor: PARKER DRILLING CO. UN: Active datum: Z-68-P27-3-ACTUAL @102.82usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) CEMENT TOTAL LOSSES DURING JOB ESTIMATED AT 351 BBLS CEMENT IN PLACE (CIP) AT 03:30 NO CEMENT RETURNS TO SURFACE HOLD STRING IN TENSION AT 225 KLBS AT END OF JOB 03:30 - 09:00 5.50 CEMT N CEMT 3,297.00 SURF HOLD PIPE IN TENSION, 225 KLBS HOOKLOAD (-30 KLBS OVER PUW NEAR END OF CMT JOB) WITH VOLANT TOOL BECAUSE PIPE NOT LANDED ON RING. WASH UP STACKAND JET FLOW LINE. FUNCTION ANNULAR. RIG DOWN DIVERTER OUTLET LINE. 09:00 14:30 5.50 CEMT N CEMT 3,297.00 SURF WAIT ON LEAD CEMENT TO REACH 50 PSI COMPRESSIVE STRENGTH (11 HRS FROM CIP). CONTINUE TO HOLD PIPE IN TENSION WITH 225 KLBS HOOKLOAD. CLEAN PITS, OFFLOAD DRILPLEX AND TAKE ON LSND BREAK APART RIG FLOOR CEMENT MANIFOLD AND LINES TO CLEANOUTALL CEMENT. BUILD STANDS OF 4" DRILLPIPE WITH OFFLINE EQUIPMENT PREPARE FOR NIPPLE DOWN AND TOP JOB CEMENT WORK _ 14:30 - 15:30 1.00 CEMTP SURF BREAKOUT LANDING JOINT AND LAYDOWN 15:30 - 21:00 5.50 BOP SUR P SURF NIPPLE DOWN ANNULAR DIVERTER, KNIFE _ - - VALVE AND HIGH PRESSURE RISERS. - --- - --- 22:00 1.00 CEMT N CEMT 21:00 I 3,297.00 SURF RIG UP TO RUN 1" CS HYDRIC TUBING WITH FALSE BOWL ON RIG FLOOR (FOR 9-5/8" SURFACE CASING CEMENT TOP JOB) 22:00 00:00 2.00 CEMT N CEMT 3,297.00 SURF MAKEUP AND RUN IN 9-5/8" X 20" CONDUCTOR ANNULUS WITH 1" (1.6" MAX OD), 2.25#, N-80, CS HYDRIL TUBING FROM SURFACE TO REFUSAL DEPTH OF 402' MD (275' BELOW BASE OF CONDUCTOR). UNABLE TO WORK PIPE FURTHER WITH RECIPROCATION. WASH EACH JOINT DOWN WITH 0.5 TO 2 BPM. 8/1/2013 00:00 03:00 3.00 CEMT N 3,297.00 SURF CIRCULATE HOLE CLEAN AND DISPLACE WELL FROM CONTAMINATED MUD TO DIRTY FRESH WATER WITH 270 BBLS WHILE RECIPROCATING 1" HYDRIL PIPE AT 402' MD. - FULL RETURNS WHILE CIRCULATING, 2 BPM, 1400 PSI. 2.5 BPM, 2185 PSI - UNABLE TO WORK PIPE DEEPER THAN 402' MD (275' BELOW BASE OF CONDUCTOR). - LARGE AMOUNT CUTTINGS IN INITIAL RETURNS, MINOR SIGNS OF CLABBERED FLUID. - DISCUSS RESULTS OF TAG AND PLAN FORWARD WITH ANCHORAGE ODE AND SLB CEMENTERS - HOLD PJSM WITH RIG TEAM AND SLB FOR CEMENTING Printed 8/20/2013 11:43:05AM North America - ALASKA - BP Page 11 Aw Operation Summary Report Common Well Name: Z-68 AFE No Event Type: DRL- ONSHORE (DON) Start Date: 7/25/2013 End Date: X3 -013H1 -C: DRILL (8,820,870.00) Project: Prudhoe Bay Site: PB Z Pad Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: Rig Contractor: PARKER DRILLING CO. UWI: Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) _ — (usft) 03:00 11:30 8.50 CEMT N CEMT 3,297.00 SURF PERFORM 9-5/8" SURFACE CASING CEMENT TOP JOB AS FOLLOWS (SEE ATTACHED SLB REPORT): SLB PUMP 5 BBLS FRESH WATER AHEAD I AND PRESSURE TEST LINES TO 250 PSI LOW AND 4000 PSI HIGH FOR FIVE MIN EACH (PASS PER LEAKTIGHT CRITERIA). SLB PUMP 64 BBLS 11.0 PPG LITECRETE CEMENT UNTILANNULUS PACKED OFF, RETURNS WERE LOST AND PIPE STUCK CONTINUED TO PUMP WHILE TRYING TO FREE PIPE WITH RIG FLOOR TUGGERS. PUMPED AWAY 23 BBLS FOR A TOTAL OF 87 BBLS PUMPED. RIGGED UP TOP DRIVE ELEVATORS AND PULLED PIPE FREE WITH 40 KLBS OVERPULL. ATTEMPT TO REGAIN CIRCULATION BUT STRING IS PACKED OFF. PULL OUT OF HOLE AND CLEAR PIPE. RUN BACK IN HOLE WITH 1" TUBING AND TAG AT 215' MD. CIRCULATE HOLE CLEAN. SLB PUMP ADDITIONAL 193 BBLS 11.0 PPG LITECRETE CEMENTAND ACHEIVED CEMENT RETURNS TO SURFACE AT 193 BBLS AWAY. SHUT DOWN PUMPS, MONITOR WELL (STATIC). PUMP ADDITIONAL 10 BBLS CEMENT AND GET 10 BBLS CEMENT BACK TO SURFACE. MW IN/OUT AT THE CONCLUSION OF PUMPING = 11.0 PPG. PULL OUT OF HOLE AND CLEAN OUT/LAYDOWN 1" TUBING. MONITOR WELL (STATIC). TOTAL CEMENT PUMPED = 290 BBLS, 852 SACKS (1.91 CUFT/SK) 11.0 PPG LITECRETE CEMENT TO SURFACE AT 280 TOTAL BBLS AWAY TOTAL CEMENT TO SURFACE = 10 BBLS NOTIFY AOGCC REPRESENTATIVE LOU GRIMALDI BY EMAIL WITH JOB N DETAILS/RESULTS 11:30 12:00 0.50 CEMT CEMT 3,297.00 SURF PULL OUT OF HOLE AND LAYDOWN 1" CS HYDRIL TUBING CIRCULATE FRESH WATER THROUGH EACH JOINT TO CLEAR OUT CEMENT 12:00 13:00 1.00 CEMT N CEMT 3,297.00 SURF RIG DOWN HANDLING EQUIPMENT FOR 1" CS HYDRILTUBING. BLOWDOWN ALL SURFACE LINES AFTER CEMENTING. 13:00 - 13:30 0.50 CASING N CEMT 3,297.00 SURF MAKEUP LANDING JOINT AND ENGAGE VOLANT TOOL. PICKUP TO 105 KLBS. FMC REP ON LOCATION TO INSTALL EMERGENCY SLIPS. SLACKOFF AND ENGAGE SLIPS WITH 70 KLBS. 13:30 16:00 2.50 WHSUR N CEMT 3,297.00 SURF FMC REPRESENTATIVE ON LOCATION TO CUT 9-5/8" SURFACE CASING WITH WACHS CUTTER. MAKE CUT AT 26" ABOVE LANDING RING (44.41' FROM RIG FLOOR). RIG CREW RIG DOWN VOLANTTOOLAND - - CASING EQUIPMENT. CHANGEOUT BAILS_. 116:00 - 19:00 3.00 WHSUR N SFAL 3,297.00 SURF UNSUCCESSFULLY ATTEMPT TO INSTALL SLIP -LOC WELLHEAD. DISCOVER UNEVEN CUT MADE WITH WACHS CUTTER. REMOVE WELLHEAD AND GRIND DOWN CUT ON 9-5/8" - - I - CASING STUMP. Printed 8/20/2013 11:43:05AM North America - ALASKA - BP Operation Summary Report Page 12 -es Common Well Name: Z-68 PSI LOW FOR FIVE MIN AND 2400 PSI HIGH (80% CSG COLLAPSE) FOR 30 MIN (PASSING AFE No Event Type: DRL- ONSHORE (DON) TESTS, SEE ATTACHED CHARTS) Start Date: 7/25/2013 End Date: X3 -013H1 -C: DRILL (8,820,870.00) Project: Prudhoe Bay Site: PB Z Pad INSTALL SECOND 2-1/16" GATE VALVES ON Rig Name/No.: PARKER 273 Spud Date/Time: 7/27/2013 7:00:OOAM Rig Release: Rig Contractor: PARKER DRILLING CO. NON -WORKING OUTLET ON OA HAS VR UWI: Active datum: Z-68 P273 ACTUAL @102.82usft (above Mean Sea Level) PLUG AND BULL PLUG Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations GATE VALVE, COMPANION FLANGE AND (hr) (usft) _ _ - 19:00 19:30 0.50 WHSUR P SURF NIPPLE UP FMC SLIP -LOC X 11" 5M TOP RISE_ R AND 13_-5/8" 5K SHAFFER BOP STACK. P SURF RIG UP TO TEST BOPE. SET TEST PLUG, FLANGE WELLHEAD. 19:30 00:00 4.50 WHSUR N WAIT 3,297.00 SURF UNSUCCESSFULLY ATTEMPT TO PRESSURE TEST SLIP -LOC WELLHEAD SEALS. NIPPLE DOWN SLIP -LOC WELLHEAD. FMC REPS DETERMINE ASSEMBLY WAS INCORRECTLY ASSEMBLED (NO INTERNAL METAL -METAL SEAL AND EXTRA SET OF UNNECESSARY NUTS). CALLOUT NEW SLIP -LOC WELLHEAD FROM STORES AND NIPPLE UP. - RIG CREW LOADING PIPE BARN WITH 4-1/2" TUBING AND PICKING UP 4" DRILLPIPE WITH OFFLINE EQUIPMENT. CHANGEOUT TOP DRIVE SAVER SUB NIPPLE UP DOUBLE STUDDED ADAPTER TO TUBING SPOOL — 8/2/2013 00:00 - 02:00 2.00 WHSUR N WAIT 3,297.00 SURF NIPPLE UP REPLACEMENT FMC SLIP -LOC X 11" 5M TOP FLANGE CASING HEAD. - RIG CREW LOAD 4-1/2" TUBING IN PIPE BARN. LOAD BHAAND BOP TESTING EQUIPMENT TO RIG FLOOR. 02:00 - 02:30 0.50 WHSUR P SURF PRESSURE TEST SLIP -LOC SEALS TO 250 02:30 - 04:00 1.50 WHSUR 04:00 - 10:30 6.50 BOPSUR 10:30 14:00 3.50 BOPSUR 14:00 - 18:00 4.00 BOPSUR ALL PASSING TESTS (SEE ATTACHED DOCUMENTATION) (2) HT38 FOSV, (1) 4-1/2" IF FOSV, & (1) 4-1/2" IF DART VALVE TESTED. 18:00 18:30 0.50 BOPSUR ( P SURF RIG DOWN TESTING EQUIPMENT. 18:30 19:00 0.50 WHSUR P SURF INSTALL WEAR BUSHING, ID = 9-7/8". RUN IN (4) LOCKDOWN SCREWS 1-1/4". 19:00 21:00 2.00 CASING P SURF CLOSE BLIND RAMS AND PRESSURE TEST 9-5/8" SURFACE CASING AND OUTER ANNULUS VALVES TO 250 PSI LOW FOR FIVE MIN AND 3500 PSI HIGH FOR 30 MIN (PASSING TESTS, SEE ATTACHED DOCUMENTATION). OBTAIN AUTHORIZATION TO PROCEED FROM WELLS TEAM LEADER. Printed 8/20/2013 11.43:05AM PSI LOW FOR FIVE MIN AND 2400 PSI HIGH (80% CSG COLLAPSE) FOR 30 MIN (PASSING TESTS, SEE ATTACHED CHARTS) P SURF NIPPLE UP FMC 11" 5M TUBING SPOOL. INSTALL SECOND 2-1/16" GATE VALVES ON WORKING SIDE ANNULUS OUTLETS. NON -WORKING OUTLET ON OA HAS VR PLUG AND BULL PLUG NON -WORKING OUTLET ON IA HAS SINGLE GATE VALVE, COMPANION FLANGE AND NEEDLE VALVE P SURF NIPPLE UP HIGH PRESSURE RISERS, FLOW RISE_ R AND 13_-5/8" 5K SHAFFER BOP STACK. P SURF RIG UP TO TEST BOPE. SET TEST PLUG, PURGE AIR FROM SYSTEM AND FILLALL ALINES WITH WATER. P SURF PRESSURE TEST BOPE TO 250 PSI LOW AND 3500 PSI HIGH FOR FIVE MIN EACH WITH 4" TEST JOINT PER ADWOP STANDARDS AND AOGCC REGULATIONS. AOGCC REPRESENTATIVE LOU GRIMALDI WAIVES THE STATE'S RIGHT TO WITNESS ALL PASSING TESTS (SEE ATTACHED DOCUMENTATION) (2) HT38 FOSV, (1) 4-1/2" IF FOSV, & (1) 4-1/2" IF DART VALVE TESTED. 18:00 18:30 0.50 BOPSUR ( P SURF RIG DOWN TESTING EQUIPMENT. 18:30 19:00 0.50 WHSUR P SURF INSTALL WEAR BUSHING, ID = 9-7/8". RUN IN (4) LOCKDOWN SCREWS 1-1/4". 19:00 21:00 2.00 CASING P SURF CLOSE BLIND RAMS AND PRESSURE TEST 9-5/8" SURFACE CASING AND OUTER ANNULUS VALVES TO 250 PSI LOW FOR FIVE MIN AND 3500 PSI HIGH FOR 30 MIN (PASSING TESTS, SEE ATTACHED DOCUMENTATION). OBTAIN AUTHORIZATION TO PROCEED FROM WELLS TEAM LEADER. Printed 8/20/2013 11.43:05AM THE STATE Alaska Oil and Gds of �� . A�'- ") K A C(annse ration Commissiolli GOVERNOR SEAN PARNELL 333 West Seventh Avenue Anchorage, Alaska 99501-3572 Main: 907.279.1433 Fax: 907.276.7542 John Rose Drilling Engineer BP Exploration (Alaska), Inc. P.O. Box 196612 Anchorage, AK 99519-6612 Re: Prudhoe Bay Field, Prudhoe Bay Oil Pool, PBU Z-68 Sundry Number: 313-417 Dear Mr. Rose: Enclosed is the approved Application for Sundry Approval relating to the above referenced well. Please note the conditions of approval set out in the enclosed form. As provided in AS 31.05.080, within 20 days after written notice of this decision, or such further time as the Commission grants for good cause shown, a person affected by it may file with the Commission an application for reconsideration. A request for reconsideration is considered timely if it is received by 4:30 PM on the 23rd day following the date of this letter, or the next working day if the 23rd day falls on a holiday or weekend. Sincerely, Cathy P. oerster �(,�1�•`------- Chair DATED this Z' day of August, 2013. Encl. STATE OF ALASKA qv'� ALASKr, _jIL AND GAS CONSERVATION COMMI&..jN j/6 APPLICATION FOR SUNDRY APPROVAL V 20 AAC 25.280 RECEIVED JUL 3 12013 enr,�r� 1. Type of Request: ❑ Abandon ❑ Plug for Redrill ❑ Perforate New Pool ❑ Repair Well ❑ Change Approved Program ❑ Suspend ❑ Plug Perforations ❑ Perforate ❑ Pull Tubing ❑ Time Extension ❑ Operations Shutdown ❑ Re -Enter Suspended Well ❑ Stimulate ❑ Alter Casing ® Other Top Job 2. Operator Name 4. Current Well Class 5. Permit To Drill Number BP Exploration (Alaska) Inc.❑ Exploratory ❑Stratigraphic ®Development Service 213-093 ' 3. Address: 6. API 0 e, Alaska 99519-6612 P.O. Box 196612, Anchorage, 50.029-23493-00-00 7. If perforating: 8. Well Name and Number: What Regulation or Conservation Order governs well spacing in this pool? PBU Z-68 , Will planned perforations require a Spacing Exception? ❑ Yes 0 No 9. Property Designatior 10. Field / Pool(s): ADL 028262 Prudhoe Bay / Prudhoe Bay 11. PRESENT WELL CONDITION SUMMARY Total Depth MD (ft): Total Depth TVD (ft): Effective Depth MD (ft): Effective Depth TVD (ft): Plugs (measured): Junk (measured) 3297' 3179' 3297' 3179' None None Casing Length Size MD TVD Burst Collapse Structural Conductor 80' 20" 80' 80' 1530 520 Surface 3280' 9-5/8" 3280' 3163' 5750 3090 Intermediate Production Liner Perforation Depth MD (ft): Perforation Depth TVD (ft): Tubing Size: Tubing Grade: Tubing MD (ft): None None Packers and SSSV Type: NoneFndTVD(ft): and SSSV 12. Attachments: 13. Well Class after proposed work: ® Description Summary of Proposal ❑ BOP Sketch ❑ Detailed Operations Program ❑ Exploratory ❑ Stratigraphic ® Development ❑ Service 14. Estimated Date for 15. Well Status after proposed work: Commencing Operation July 31, 2013 ® Oil ❑ WINJ ❑ WDSPL ❑ Plugged ❑ Gas ❑ GINJ ❑ GSTOR ❑ Abandoned 16. Verbal Approval: Date 7/31/2013 Commission Representative: Victoria Ferguson ❑ WAG ❑ SPLUG ❑ Suspended 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. Contact: John Rose, 564-5271 Printed Name: John Rose Title: Drilling Engineer Email: John.G.Rose@bp.com Signature: Phone: 564-5271 Date: Commission Use Only Conditions of approval: 4otify Commission so that a representative may witness Sundry Number: y ❑ Plug Integrity ❑ BOP Test ❑ Mechanical Integrity Test ❑ Location Clearance Other: RBDMS AUG - 7 201,A Spacing Exception Required? ❑ Yes ❑ No Subsequent Form Required: ! g� APPROVED BY Q Approved By: C MMISSIONER THE COMMISSION Date: FJ Form 10-403 Revised 10/ 12 Approv dd i4tU if RA1Lmonths from the date of approval�/ Submit In Duplicate Lastufka, Joseph N From: Rose, John G (ASRC) Sent: Wednesday, July 31, 2013 10:08 AM To: Ferguson, Victoria L (DOA) (victoria.ferguson@alaska.gov) Cc: AK, D&C Rig 273 Well Site Leader; Willingham, James M; Honas, Kristopher; Allen, Kenneth W; Lastufka, Joseph N; Daniel, Ryan Subject: Z-68 Surface Casing Cement Job (possible need for top -job) Victoria, Per our recent conversation, please note the following summary of the events associated with our 9-5/8" surface casing cement job last night on the Z-68 well on Parker 273. 1. Drilled 12-1/4" hole to 3297' MD w/o problems and w/o any excessive cutting haul -off, wiper tripping the well at the base permafrost and at TD. 2. Ran 40# 9-5/8" casing to 3287' per the plan without any issues and/or mud losses. 3. Staged pumps to our planned cementing rate of 10 bpm w/o losses (did have some extra circulating time waiting on trucks, pressure testing lines and other issues). 4. Began the cement job planning to pump 100 bbls of 11.0 ppg mud push, 534 bbls of 11.0 ppg Lead and 85 bbls of 15.8 ppg tail (350% excess through the permafrost and 40% excess through the remainder of the well). 5. Began the cement job at —midnight last night and pumped the 100 bbls of mud push and 310 bbls of the lead slurry when a surface line plugged and the cement job was stopped for a period of time ("'1.5 hours). At this point, there were 60 bbls of lead around the shoe and the 9-5/8" casing was full of cement ("'250 bbls). 6. Identified the "plugged" line on the rig and "jumped" the line to continue the cement job. 7. Resumed the job bumping the plug on strokes after pumping all planned cement (casing stuck off the landing ring, therefore, emergency slips will be required for this casing). 8. While pumping the job, the well did begin to pack -off and we lost —340 bbls of cement during the job. 9. The last fluid density seen at surface was 10.5 —11.0 ppg and appeared to be some combination of mud push + cement. 10. We are currently holding the 9-5/8" casing in tension (225K) until 2:30 pm today (50 psi compressive) before releasing from the casing string. 11. After releasing from this casing string, we will back -out landing joint and ND diverter system. 12. We will then RU 1" top -job string and attempt to RIH between the 9-5/8" casing and 20" conductor to see if a top -job is required and pump top -job if needed (150 bbls of 11.0 ppg cement ready to go). 13. With cement to surface via the top -job if needed, we will set the casing on emergency slips and NU a sliplock wellhead and test. 14. We will then move forward with wellplan operations. As the hole was in excellent condition for running this casing string, I suspect the shut -down period with the plugged surface line allowed some debris to run into the well and as the cement job was resumed, the pack-off/lost circulation problems were initiated. Please let me know if you have any questions or concerns and I will follow up this e-mail with a Sundry request to perform a top -job cement job if needed on this well. That being the case and with the information in the e-mail, could you provide a verbal OK to move forward with the top -job if needed? Thanks for your help. - jr Joey (WSL) - Please forward this e-mail to the AOGCC Inspector on the Slope as requested by Victoria. PTD a13-oq3 Ferguson, Victoria L (DOA) From: Ferguson, Victoria L (DOA) Sent: Wednesday, July 31, 2013 10:30 AM To: 'Rose, John G (ASRC)' Cc: Regg, James B (DOA); Schwartz, Guy L (DOA) Subject: RE: Z-68 Surface Casing Cement Job (possible need for top job) John, You have verbal approval to proceed with top job if needed. Please notify AOGCC inspectors for an opportunity to witness. Submit 10-403 for top job as soon as possible. Thanx, Victoria Victoria Ferguson Senior Petroleum Engineer State of Alaska Oil & Gas Conservation Commission 333 W. 7th Ave, Ste 100 Anchorage, AK 99501 Work: (907)793-1247 victoria.ferguson cDalaska.gov From: Rose, John G (ASRC) [mailto:John.G.Rose bp.com] Sent: Wednesday, July 31, 2013 10:08 AM To: Ferguson, Victoria L (DOA) Cc: AK, D&C Rig 273 Well Site Leader; Willingham, James M; Kristopher.HonasCaft.com; Allen, Kenneth W; Lastufka, Joseph N; Daniel, Ryan Subject: Z-68 Surface Casing Cement Job (possible need for top -job) Victoria, Per our recent conversation, please note the following summary of the events associated with our 9-5/8" surface casing cement job last night on the Z-68 well on Parker 273. 1. Drilled 12-1/4" hole to 3297' MD w/o problems and w/o any excessive cutting haul -off, wiper tripping the well at the base permafrost and at TD. 2. Ran 40# 9-5/8" casing to 3287' per the plan without any issues and/or mud losses. 3. Staged pumps to our planned cementing rate of 10 bpm w/o losses (did have some extra circulating time waiting on trucks, pressure testing lines and other issues). 4. Began the cement job planning to pump 100 bbls of 11.0 ppg mud push, 534 bbls of 11.0 ppg Lead and 85 bbls of 15.8 ppg tail (350% excess through the permafrost and 40% excess through the remainder of the well). 5. Began the cement job at midnight last night and pumped the 100 bbls of mud push and 310 bbls of the lead slurry when a surface line plugged and the cement job was stopped for a period of time (-1.5 hours). At this point, there were 60 bbls of lead around the shoe and the 9-5/8" casing was full of cement (-250 bbls). 6. Identified the "plugged" line on the rig and "jumped" the line to continue the cement job. 7. Resumed the job bumping tht r,iug on strokes after pumping all planned c,.,ient (casing stuck off the landing ring, therefore, emergency slips will be required for this casing). 8. While pumping the job, the well did begin to pack -off and we lost "340 bbls of cement during the job. 9. The last fluid density seen at surface was 10.5 —11.0 ppg and appeared to be some combination of mud push + cement. 10. We are currently holding the 9-5/8" casing in tension (225K) until 2:30 pm today (50 psi compressive) before releasing from the casing string. 11. After releasing from this casing string, we will back -out landing joint and ND diverter system. 12. We will then RU 1" top -job string and attempt to RIH between the 9-5/8" casing and 20" conductor to see if a top -job is required and pump top -job if needed (150 bbls of 11.0 ppg cement ready to go). 13. With cement to surface via the top -job if needed, we will set the casing on emergency slips and NU a sliplock wellhead and test. 14. We will then move forward with wellplan operations. As the hole was in excellent condition for running this casing string, I suspect the shut -down period with the plugged surface line allowed some debris to run into the well and as the cement job was resumed, the pack-off/lost circulation problems were initiated. Please let me know if you have any questions or concerns and I will follow up this e-mail with a Sundry request to perform a top -job cement job if needed on this well. That being the case and with the information in the e-mail, could you provide a verbal OK to move forward with the top -job if needed? Thanks for your help. - jr Joey (WSL) - Please forward this e-mail to the AOGCC Inspector on the Slope as requested by Victoria. John G. Rose BP Staff Engineer Anchorage, AK rose 11 @bp.com 907/564-5271 Office 907/748-5223 Cell 907/243-8813 Home PT A9 a J3 -� 9� Ferguson, Victoria L (DOA) From: Ferguson, Victoria L (DOA) Sent: Tuesday, August 13, 2013 10:12 AM To: Rose, John G (ASRC) (John.G.Rose@bp.com) Subject: RE: Z-68 7" Casing Cement Job John, Please run a USIT or CBL to evaluate cement quality and TOC. Thanx, Victoria From: Ferguson, Victoria L (DOA) Sent: Sunday, August 11, 2013 6:01 PM To: Rose, John G (ASRC) Subject: Re: Z-68 7" Casing Cement Job Thanx for the update. I'll get back with you on the cement. Sent from my iPhone On Aug 11, 2013, at 3:01 PM, "Rose, John G (ASRC)" <Iohn.G.Rose@bp.com> wrote: Victoria, We pumped our 7" casing cement job on 8/10/13 with the intent of bringing cement to ^3864' MD which would have been —500' MD below the surface casing shoe and —650' TVD above the top of the SB_Na . These depths would have also satisfied the State's requirement for bringing cement 500' above the upper most "significant" oil bearing zone (in this case is the SB_OA). We calculated our excess cement requirements at 30% and pumped 186 bbls of 11.5 ppg LiteCrete lead followed by 21 bbls of 15.8 ppg tail. The cement job went per plan without any losses noted and bumping the plug on strokes. We have reviewed this cement job by analyzing our lift pressure which fell short of our pre -job modeling (640.5 psi actual vs 846.7 psi as per design), we now estimate the TOC to be at 4442' MD which does fall short of the 500' State requirement. Our calculated footage above the SB_OA is 378' MD. Our plan is to move forward on this well to drill and case the production hole which does not limit any path -forward work that may be needed to address the 500' of cement issue above the SB -OA. If you have any questions or concerns, please advise. john G. Rose BP Staff Engineer Anchorage, AK rosel1@bp.com 907/564-5271 Office 907/748-5223 Cell 907/243-8813 Home i=rb ar3-1913 Ferguson, Victoria L (DOA) From: Rose, John G (ASRC) <John.G.Rose@bp.com> Sent: Tuesday, July 23, 2013 9:39 AM To: Ferguson, Victoria L (DOA) Cc: Schwartz, Guy L (DOA); AK, D&C Rig 273 Well Site Leader, Allen, Kenneth W Subject: RE: Z-68 PTD Thanks very much. -jr John G. Rose BP Staff Engineer Anchorage, AK rosel1@bp.com 907/564-5271 Office 907/748-5223 Cell 907/243-8813 Home From: Ferguson, Victoria L (DOA)[mailto:victoria.ferguson(&alaska.gov] Sent: Tuesday, July 23, 2013 9:36 AM To: Rose, John G (ASRC) Cc: Schwartz, Guy L (DOA) Subject: RE: Z-68 PTD I will update the well file and PTD with this information. From: Rose, John G (ASRC) [mailto:John.G.Rose(&bp com] Sent: Tuesday, July 23, 2013 9:31 AM To: Schwartz, Guy L (DOA) Cc: Ferguson, Victoria L (DOA) Subject: RE: Z-68 PTD That is an 18.7 degree target within that diverter arrangement. John G. Rose BP Staff Engineer Anchorage, AK rosel1@bp.com 907/564-5271 Office 907/748-5223 Cell 907/243-8813 Hom, From: Schwartz, Guy L (DOA) [ma iIto: guy. schwa rtz(&alaska gov] Sent: Tuesday, July 23, 2013 9:11 AM To: Rose, John G (ASRC) Cc: Ferguson, Victoria L (DOA) Subject: RE: Z-68 PTD Victoria is back ... Only question I have is the angle ... assume this is a targeted angle? Guy Schwartz Senior Petroleum Engineer 1 IX AOGCC 907-444-3433 cell 907-793-1226 office From: Rose, John G (ASRC) [mailto:John.G.Rose@bp.com] Sent: Tuesday, July 23, 2013 8:32 AM To: Schwartz, Guy L (DOA) Subject: FW: Z-68 PTD Guy, Not sure if Victoria is in or not, therefore, please be advised of the details of this e-mail as it relates to our diverter plan for this well and please let me know if you have any questions or concerns. Thanks - jr John G. Rose BP Staff Engineer Anchorage, AK rose1 l @bp.corn 907/564-5271 Office 907/748-5223 Cell 907/243-8813 Home From: Rose, John G (ASRC) Sent: Monday, July 22, 2013 9:43 AM To: Ferguson, Victoria L (DOA)(victoria.ferciuson(a&alaska.gov) Subject: FW: Z-68 PTD Victoria, Got the PTD Friday for this well, but, noticed the diverter lay -out was as originally submitted versus the revised plan (see attached) that was sent to you on 7/15/13 (just want to avoid any confusion if the inspector does not see the same diverter arrangement as in the permit). Let me know if you have any questions or concerns and thanks. - jr John G. Rose BP Staff Engineer Anchorage, AK rose11 @bp.com 907/564-5271 Office 907/748-5223 Cell 907/243-8813 Home From: Rose, John G (ASRC) Sent: Monday, July 15, 2013 7:54 AM To: 'Ferguson, Victoria L (DOA)' Subject: RE: Z-68 PTD Victoria, As it relates to the Z-68 PTD request, please note the attached schematic which details the diverter lay -out for the rig -up on the Z-68 well. As our expected move date to that well is 7/2813, please let me know if you have any other questions or concerns and thanks for help. -jr John G. Rose BP Staff Engineer Anchorage, AK 6 rose11 @bp.com 907/564-5271 Office 907/748-5223 Cell 907/243-8813 Home From: Ferguson, Victoria L (DOA) [mailto:victoria.ferauson(-Oalaska.gov] Sent: Wednesday, July 10, 2013 3:48 PM To: Rose, John G (ASRC) Subject: RE: Z-68 PTD It will be ready by the end of this week or the beginning of next week - From: Rose, John G (ASRC) [mailto:John.G.Rose(ftp.com] Sent: Wednesday, July 10, 2013 3:41 PM To: Ferguson, Victoria L (DOA) Subject: Z-68 PTD Victoria, As we could be moving Parker 273 to the Z-68 well before the end of the month, could you tell me the status of our PTD request? Also, as I will be the ODE for this well, please do not hesitate to give me a call if you have any questions or concerns I can help with as it may relate to this well/PTD. Thanks -jr John G. Rose BP Staff Engineer Anchorage, AK rose1l @bp.com 907/564-5271 Office 907/748-5223 Cell 907/243-8813 Home rn i If y �are_Working in this a idn area you will need -to conduct SIMOPS with Rig. �� , - — =X= N ----- .;Mutt Pred:uct and, 1t 1 i I I 55�° Equipment. ------ ; `I 1 $taging.Area 1 1 36' 1 ►' -- H IS!2 Q p d Y` Na AA to .A SA (N .e N 1�.1►® V --------- ------- EntedExit - ar Area Sign In Trailer 16286 Tm la CA 711, 642, 11 I ax.o •as. . 11 I� 503 1 I sa:el masa f;l•51$X.... " 516 50fiA 506B 5060 t O .. 50. Diverter Exclusio n Zone I 51A I . •.,.., :. _ _ .... i _ �_ .--�- - :6.50:1...... 615� :ar a cnea xasa se4AX \ $ii --- Eli �S C ' V NSPN leA 6 3g' o oeI NA 7 A 520 12jEM-5 ---------f 521 - ' 2092 i mockup ' Entrance Surface l Parktni,;, to offices Diverter WELL PRODUCER ■ or ❑ J WELL INJECTOR A DATE : 11/26/2012 SCALE: 1" = 250' MAP DATE: 2011 PRUDHOE BAY UNIT - Z PAD WELL SLOT W/CONDUCTOR THE STATE Awakerite and Geis 01ALA3KA C�auservatlon Comm'Issban GOVERNOR SEAN PARNELL 333 West Seventh Avenue Anchorage, Alaska 99501-3572 Main: 907.279.1433 Fax: 907.276.7542 Ken Allen Engineering Team Leader BP Exploration (Alaska), Inc. P.O. Box 196612 Anchorage, AK 99519-6612 Re: Prudhoe Bay Field, Prudhoe Bay Oil Pool, PBU Z-68 BP Exploration (Alaska), Inc. Permit No: 213-093 Surface Location: 4291' FSL, 2507' FEL, SEC. 19, T11N, R12E, UM Bottomhole Location: 2781' FSL, 3721' FEL, SEC. 20, TI IN, R12E, UM Dear Mr. Allen: Enclosed is the approved application for permit to drill the above referenced development well. This permit to drill does not exempt you from obtaining additional permits or an approval required by law from other governmental agencies and does not authorize conducting drilling operations until all other required permits and approvals have been issued. In addition, the Commission reserves the right to withdraw the permit in the event it was erroneously issued. Operations must be conducted in accordance with AS 31.05 and Title 20, Chapter 25 of the Alaska Administrative Code unless the Commission specifically authorizes a variance. Failure to comply with an applicable provision of AS 31.05, Title 20, Chapter 25 of the Alaska Administrative Code, or a Commission order, or the terms and conditions of this permit may result in the revocation or suspension of the permit. Sincerely, ae4l /4444-� Cathy P Foerster Chair YW Ia DATED this � day of July, 2013. STATE OF ALASKA ALASt_ . OIL AND GAS CONSERVATION COMMI_ _iON PERMIT TO DRILL 20 AAC 25.005 1 a.Type of work: 1 b.Proposed Well Class: ® Development Oil ❑ Service - Wini ® Single Zone 1 c. Specify if well is proposed for: ® Drill ❑ Lateral ❑ Stratigraphic Test ❑ Development Gas ❑ Service - Supply ❑ Multiple Zone ❑ Coalbed Gas ❑ Gas Hydrates ❑ Redrill ❑ Reentry ❑ Exploratory ❑ Service - WAG ❑ Service - Disp ❑ Geothermal ❑ Shale Gas 2. Operator Name: 5. Bond ® Blanket ❑ Single Well 11. Well Name and Number: BP Exploration (Alaska) Inc. Bond No 6194193 PBU Z-68 3. Address 6. Proposed Depth: 12. Field / Pool(s) P.O. Box 196612, Anchorage, Alaska 99519-6612 MD 11051' - TVD 8841' Prudhoe Bay / Prudhoe Bay 4a. Location of Well (Governmental Section): 7. Property Designation (Lease Number): Surface: ADL 028262 ' 4291' FSL, 2507' FEL, Sec. 19, T11N, R12E, UM 8. Land Use Permit: 13. Approximate Spud Date: Top of Productive Horizon: 3498' FSL, 4808' FEL, Sec. 20, T11 N, R12E, UM July 20, 2013 9. Acres in Property: 14.Distance to Nearest Property: Total Depth 2781' FSL, 3721' FEL, Sec. 20, T11 N, R12E, UM 2560 10370' 4b. Location of Well (State Base Plane Coordinates - NAD 27): 10. KB Elevation above MSL: 102.83' - feet 15.Distance to Nearest Well Open Surface: x 600171 - y- 5959100 Zone- ASP4 GL Elevation above MSL: 55.9' feet to Same Pool: 1400' 16. Deviated Wells: Kickoff Depth: 300' , feet 17. Maximum Anticipated Pressures in psig (see 20 AAC 25.035) Maximum Hole Angle: 104 degrees Downhole: 3657 V Surface: 2799 18. Casing Program S ecifications Top - Setting Depth - Bottom Quantity of Cement, c.f. or sacks Hole Casing Weight Grade Coupling Length MD TVD MD TVD (including stage data) 20" 94# H-40 80' Surface Surface 80' 80' 260 sx Arctic Set (Approx.) 12-1/4" 9-5/8" 40# L-80 BTC 3295' Surface Surface 3295' 3183' 1516 sx Dee Crete 407 sx Class'G' 8-3/4" 7" 26# L-80 VamTop 9605' Surface Surface 9605' 8688' 526 sx LiteCrete 182 sx Class 'G' 6-1/8" 4-1/2" 1 12.6# 13Cr80 Hydril521 1596' 1 9454' 8565' 11051' 8841' Uncemented Sliding Sleeves, Swell Packers 19. PRESENT WELL CONDITION SUMMARY (To be completed for Redrill and Re-entry Operations) Total Depth MD (ft): Total Depth TVD (ft): Plugs (measured): Effective Depth MD (ft): Effective Depth TVD (ft): Junk (measured). Casing Length Size Cement Volume MD TVD Conductor / Structural Surface Intermediate Production Liner Perforation Depth MD (ft): Perforation Depth TVD (ft): 20.Attachments: ® Property Plat ® BOP Sketch ® Drilling Program ❑ Time vs Depth Plot ❑ Shallow Hazard Analysis ® Diverter Sketch ❑ Seabed Report ® Drilling Fluid Program ® 20 AAC 25.050 Requirements 21. Verbal Approval: Commission Representative: 22. 1 hereby certify that the foregoing is true and correct: Date Contact Abby Warren, 564-5720 Printed Name Ken Allen Title Engineering Team Leader Email Abigail.Warren@bp.com Signature �' L'ti_6- -> Phone 564-4366 Date -2-Commission Use Only Permit To Drill t% API Number: Permit Appr I See cover letter for Number: other requirements: Conditions of Approval: If box is checked, well may not be used to explore for, test, or produce coalbed methane, gas hydrates, or gas 3 j(Jp PSi contained shales: ,� Other: Samples Req'd: Yes U No Mud Log Req'd: ❑ Yes dNo r HZS Measures: 60c_�- Yes ❑N o Directional Survey Req'd: Yes [],No 2-0 AAA_ Z_ Q S acing �xception req'd: ❑ Yes © No inclination -only svy Req'd: ❑ Yes 0 No APPROVED BY APPROVED BY A�L MMISSIONER THE COMMISSION Date _ Form 10-401 Revised 10/212 This pet.) iHaicb 14NnA t om the date of approval (20 AAC 25.005(g)) Submit Form and Attachm .I,nDu/plicate VV VV LL.� _1-Z 7- / 7 / F G To: Alaska Oil & Gas Conservation Commission From: Abby Warren, ODE Date: June 18, 2013 Re: Z-68 Permit to Drill The Z-68 well is scheduled to be drilled by Parker 273 in late July of 2013. The grassroots well is a horizontal producer targeting the Ivishak Zone 4. The planned well has three hole sections. Surface casing will be set in competent shale in the SV1 to isolate the permafrost and running gravels. The Intermediate hole is planned as a casing string which top sets the Sag River formation. The production interval will be completed with a cement -less liner using sliding sleeves and swell packers with a cemented liner as a contingency if hole problems are encountered. The liner is designed to allow selective production along the horizontal lateral to maximize oil recovery and minimize intervention requirements. The maximum anticipated surface pressure from the Ivishak/Sag with a full column of gas from TD to surface is 2799 psi (assumes 8.2 ppg as max pore pressure). This well will be drilled by Parker 273 using their 5000 psi four preventer BOP stack (3 rams and an annular). The BOP rams and annular will be tested to 3500 psi. In addition to a planned well summary, a directional plan and proposed completion diagram is attached to the permit application. If there are any questions concerning information on Z-68, please do not hesitate to use the contact information below. Abby Warren Office: 907-564-5720 Cell: 907-240-9293 Email: abigail.warren(u�,bp.com Attachments: Well Schematic Directional Plan BOPE Equipment Schematics Diverter Line Layout Diagram Z-68 PTD Page 1 6/18/2013 Planned Well Summary Well Z-68 Well Oil Producer FobjarectiveetIvishak Current Status Grass Roots Well Estimated Start Date: 07/20/2013 1 Time to Com lete: 35.4 Days Surface Northing Easting Offsets TRS Location 1 5959100 600171 4291' FSL / 2507' FEL . 11 N 12E sec 19 Planned KOP: I 300' MD/197' TVDss I IPlannedTD:l11,051' MD/8738' TVDss Rig: Parker 273 BF -RT: 1 48.825' 1 RTE (ref MSL): 1 102.825' Directional — Schlumberger P12c KOP: 300' MD Northing Easting TVDss Offsets TRS TSag Tgt 5958348 603163 -8574' 3498' FSL / 4808' FEL 11 N 12E sec 20 BHL 5957646 604262 -8738' 2781' FSL / 3721' FEL 11 N 12E sec 20 Planned KOP: I 300' MD/197' TVDss I IPlannedTD:l11,051' MD/8738' TVDss Rig: Parker 273 BF -RT: 1 48.825' 1 RTE (ref MSL): 1 102.825' Directional — Schlumberger P12c KOP: 300' MD Maximum Hole Angle: -350 in the 8-3/4" intermediate section 103.640 in the 6-1/8" production section Close Approach Wells: All offsets pass major risk analysis Survey Program: Surface to -500 ft MD = GYD-GC-SS (single shot gyro) -500 ft MD to TD = MWD+IFR+MS Nearest Property Line: 10,370 ft SW Nearest Well within Pool: 1400 ft to Z -39A Z-68 PTD Page 2 6/19/2013 Formation Tops & Pore Pressure Estimate (SOR) Formation Estimated Formation Top (TVDss) Minimum Pore (EMW PP) Most Likely Pore Pressure (EMW ppg) Maximum Pore Pressure (EMW ppg) Depth Uncertainty (+/- TVD ft) Fluid Type (for sands) GI 267 8.35 8.40 8.45 +/-30' SV6 1034 8.35 8.40 8.45 +/-30' EOCU 1608 8.35 8.40 8.45 +1-30' SV5 1681 8.35 8.40 8.45 +/-30' BPRF 1745 8.35 8.60 8.60 +/-30' SW 1801 8.35 8.60 8.60 +/-30' water SV3 2293 8.35 8.60 8.60 +/-30' gas hydrate SV2 2493 8.35 8.60 9.00 +/-30' water SV1 2802 8.35 8.60 9.00 +/-30' gas hydrate 9 5/8" Surface Casing 3080 8.35 8.60 9.00 +/-30' UG4 3120 8.35 8.70 9.00 +/-30' UG4A 3157 8.35 8.80 8.80 +/-30' water UG3 3503 8.35 8.80 8.80 +/-50' water/heavy oil Fault #1 HSF 3587 8.35 8.80 8.80 +/-50' UGI 3804 8.35 8.70 8.80 +/-50' heavy oil UG Ma 4086 8.35 8.80 8.80 +/-50' water UG_Mb1 4119 8.35 8.80 8.80 +/-50' water UG_Mb2 4168 8.35 8.80 8.80 +/-50' heavy oil UG Mc 4229 8.35 8.80 8.80 +/-50' water NA 4292 8.40 8.70 8.70 +/-50' viscous oil NB 4318 8.40 8.70 8.70 +/-50' water CIA 4471 8.40 8.45 8.70 +/-50' viscous oil OBA 4531 8.40 8.45 8.70 +/-50' viscous oil OBB 4562 8.40 8.45 8.70 +/-50' viscous oil OBC 4612 8.40 8.45 8.70 +/-50' viscous oil OBD 4668 8.40 8.45 8.70 +/-50' viscous oil Fault #8 4684 8.40 8.70 8.70 +/-50' OBE 4692 8.40 8.70 8.70 +/-50' viscous oil OBF 4732 8.40 8.70 8.70 +/-50' viscous oil OBF BASE 4780 8.40 8.70 8.70 +/-50' viscous oil CM -2 5149 8.40 8.70 8.70 +/-50' CM -I 5871 9.40 9.50 10.20 +/-50' TLBK 6181 9.40 10.00 10.70 +/-50' THRZ 6344 9.40 10.00 10.30 +/-50' TKLB 6580 9.40 10.00 10.30 +/-50' TKC4 6603 6.40 9.50 10.40 +/-50' light oil LCU 6638 6.40 9.50 10.40 +/-50' light oil TKA4 6653 8.51 9.95 10.40 +/-50' water TMLV 6679 9.60 10.00 10.30 +/-50' TKNG 7407 9.60 10.00 10.50 +/-50' TJG 7427 9.60 10.00 10.50 +/-50' TJ F 7744 9.60 10.00 10.50 +/-50' Fault #2 7752 9.60 10.00 10.50 +/-50' TJ E 7918 9.60 10.00 10.50 +/-50' TJ D 8161 9.60 10.00 10.50 +/-50' Fault #3 8271 9.60 10.00 10.50 +/-50' TJC 8371 9.60 10.00 10.50 +/-50' V Xp11)1� Z-68 PTD Page 3 6/18/2013 TJB 8472 9.60 10.20 10.50 +/-50' TJA 8516 9.60 10.20 10.50 +/-50' TSGR (top set point) 8577 7.14 8.20 9.62 +/-50' gas 7" Intermed Csg 8582 7.14 8.19 9.62 +/-30' TSHU 8606 7.12 8.18 9.70 +/-30' gas TEIL 8715 7.12 8.10 9.70 +/-30' gas TSAD (46P) 8742 7.05 8.08 9.00 +/-30' gas/oil PGOC 8765 VamTop 9455 Surface gas/oil 45N 8775 7.05 8.04 9.00 +/-30' oil 44N 8805 7.05 8.04 9.00 +/-30' oil 43N 8838 7.05 8.04 9.00 +/-30' oil 42N 8855 7.05 8.04 9.00 +/-30' oil 41 N 8890 7.05 8.03 9.00 +/-30' oil 41 P 8894 7.05 8.03 9.00 +/-30' oil/water Invert/POWC 8900 7.05 8.04 9.00 +/-30' oil/water 41P (Invert) 8890 7.05 8.03 9.00 +/-30' oil/water 41N (Invert) 8872 7.05 8.04 9.00 +/-30' oil 42N (Invert) 8840 7.05 8.04 9.00 +/-30' oil Fault#4 (I Oft) 8840 7.05 8.04 9.00 +/-30' oil 43N (Invert) 8825 7.05 8.04 9.00 +/-30' oil 44N (Invert) 8802 7.05 8.04 9.00 +/-30' oil 45N (Invert) 8780 7.05 8.04 9.00 +/-30' oil PGOC 8765 gas/oil TSAD Invert 8760 7.05 8.06 9.00 +/-30' gas/oil TD 8738 7.05 8.09 9.00 +/-30' gas/oil Casing/Tubing Program 1P- Hole Size Casing / Tbg O.D. Wt/Ft Grade Conn Length ft Top (ft) MD / TVDss Bottom (ft) MD / TVDss - 20" 94# H-40 - 80 Surface 80/33 12-1/4" 9-5/8" 40# L-80 BTC 3295 Surface 3295/3080 8-3/4" 7" 26# L-80 VamTop 9605 Surface 9605/8585 6-1/8" 4 %" 1 12.6# 1 13Cr-80 H dril 521 1596 9454/8462 11051/8738 Tubing 4'/2" 1 12.6# 1 13Cr-80 VamTop 9455 Surface 9454/8462 Mud Program Surface Hole Mud Pro erties: Dril lex Spud Mud 12-1/4" Hole Section Density Depth Interval PV YP API FL Chlorides pH Funnel Viscosity ppg (cp) Ib/100 ft2 ml/30min mg/I 20-28 <6 NC <18 9-10 6414'- 8166 10.2-10.4 12-22 20-28 <4 sec/qt 0'- Section TD 8.5-9.4 W' 30-50 40-80 10 <1000 10.8 60-120 Intermediate Mud Pro erties: LSND 1 8-3/4" hole section Depth Interval Density PV YP API FL HTHP FL MBT pH 3295'- 6414' 9.2-9.8 12-18 20-28 <6 NC <18 9-10 6414'- 8166 10.2-10.4 12-22 20-28 <4 <10 <20 9-10 8166'- TD 10.6-11.0 12 - 22 20-28 <4 <10 <20 9-10 Z-68 PTD Page 4 6/18/2013 V Production Mud Pro erties: Water Based Po l mer Fluid 1 6-1/8" hole section Sample Catchers – as required by Geology Density PV YP Low Shear None Cased Hole: Depth Interval (ppg) (cp) API FL Rate (Ib/100ft2) MBT pH Volume: Volume: Viscosity 505 bbls, 2835.5 cuft, 1516 sks of 11.0 ppg DeepCRETE, Yield: 1.87 ft3/sk — 38 bbls, 213 cuft, 182 sks of 15.8 ppg Class G, Yield: 1.17 ft3/sk 9605' -TD 8.5-8.8 - <12 10-20 >10 >15000 <4 8-9.5 Logging Program 12-1/4"Surface: Sample Catchers - not required for surface hole Drilling: Dir/GR/Res ` Oen Hole: None Cased Hole: None 8-%" Intermediate: Sample Catchers – as required by Geology Drilling: Dir/GR/Res/Den/Neu Oen Hole: None Cased Hole: Contingency USIT 6-'/8" Production: Sample Catchers – as required by Geology Drilling: Dir/GR/Res/Neu/Den Oen Hole: None Cased Hole: None Cement Pro ram Casing Size 9-5/8" 40#, L-80 Surface Casing Basis: Lead: Open hole volume + 350% excess above BPRF, 40% excess below BPRF. Basis: Port collar used if hole conditions dictate Lead TOC: Surface Tail: Open hole volume + 40% excess + 80 ft shoe track Total Cement Tail TOC: 1000 ft MD above casing shoe Total Cement Volume: Volume: Lead 505 bbls, 2835.5 cuft, 1516 sks of 11.0 ppg DeepCRETE, Yield: 1.87 ft3/sk — 38 bbls, 213 cuft, 182 sks of 15.8 ppg Class G, Yield: 1.17 ft3/sk Tail 84.2 bbls, 472.5 cuft, 407 sks of 15.8 ppg Class G, Yield: 1.16 ft3/sk Casing Size 7" 26#, L-80 Intermediate Casing Basis: Lead: Open hole volume + 30% excess Lead TOC: 650' TVDss above the SB Na Tail: Open hole volume + 30% excess + 80 ft shoe track Tail TOC: 1000' MD above casing shoe Total Cement Lead 164 bbls, 920 cuft, 526 sks of 11.5 ppg Litecrete, Yield: 1.75 ft3/sk Volume: Tail 38 bbls, 213 cuft, 182 sks of 15.8 ppg Class G, Yield: 1.17 ft3/sk Casing Size 4.5"12.6#, 13Cr-80 Production Liner Basis: N/A (cementless liner) "'7 54.,& Surface and Anti -Collision Issues Surface Shut-in Wells: No wells required shut-in to move the rig on/off the Z-68 slot No wells require shut-in for anti -collision issues Z-68 PTD Page 5 6/18/2013 Hydrogen Sulfide Z -Pad is considered an H2S site. Recent H2S data from the pad is as follows: Parent Well (if sidetrack) #1 Closest SHL Well 1-12S Level #2 Closest SHL Well H2S Level #1 Closest BHL Well H2S Level #2 Closest BHL Well 1-12S Level #3 Closest BHL Well 1-12S Level #4 Closest BHL Well 1-12S Level Max. Recorded 1-12S on Pad/Facility Other Relevant 1-12S Data (1-12S alarms from rigs, etc.) Faults Well Name 1-12S Level ' Reading Date Comments WA new well MD Intersect TVDss Intersect Z-50 28 ppm 9/7/2012 Z -46A 20 ppm 2/1/2013 Z-40 26 ppm 11/6/2012 Z -39A 18 ppm 4/26/2012 W -27A 20 ppm 5/14/2012 W -02A 10 ppm 2/21/2012 Z-67 200 ppm 3/28/2012 Z-100 was 120 ppm on 1/25/13 Fault #3 (fault in TJD-TJC) 9,220.0 8,271.0 Formation Where Encounter Fault MD Intersect TVDss Intersect Throw Direction Uncertainty Lost Circ Kick tolerance Assumes a 0.5 ppg kick intensity over the anticipated 8.2 ppg pore and Magnitude Planned BOP test pressure Potential Fault #1 (Highland State Fault), UG3 3,830.0 3,587.0 200' dtsw +/- 150' MD Med Fault #2 (fault in TJF-TJE) 8,584.0 7,750.0 50' dtw +/- 150' MD Med Fault #3 (fault in TJD-TJC) 9,220.0 8,271.0 20'dtsw +/- 150' MD Med Fault #4 (possible smal fault in 10,612.0 8,841.0 10'dts +/- 100' MD Med Zone4 Fault #8 (fault in Sl3OA) 5,059.0 1 4,684.0 40'dtsw +/- 150' MD Med Drilling Waste Disposal There is no annular injection in this well. Cuttings Handling: Cuttings generated from drilling operations will be hauled to grind and inject at DS -04. Any metal cuttings will be sent to the North Slope Borough. Fluid Handling: Haul all drilling and completion fluids and other Class II wastes to DS -04 for injection. Haul Class I waste to DS -04 and/or Pad 3 for disposal / Contact the GPB Environmental Advisors (659-5893) for guidance. Well Control The 12-1/4" surface hole will be drilled with a diverter. (See attached diverter layout) The 8-3/4" and the 6- 1/8" hole sections will be drilled with well control equipment consisting of 5,000 psi working pressure pipe rams (2), blind/shear rams, and annular preventer capable of handling the maximum potential surface pressures. Based upon calculations below, BOP equipment will be tested to 3500 psi. -✓ BOP test frequency for Z-68 will be 14 days with function test every 7 days. Except in the event of a significant operational issue that may affect well integrity or pose safety concerns, an extension to the 14 day BOP test period should not be requested. 8-3/4" Intermediate Interval Maximum anticipated BHP 3657 psi at @ TSGR at 8577' TVDss (8.2 ppg EMW) Maximum surface pressure 2799 psi (.10 psi/ft gas gradient to surface) 25 bbls with a 12.8 ppg frac gradient Kick tolerance Assumes a 0.5 ppg kick intensity over the anticipated 8.2 ppg pore pressure at interval TD with a 10.6 ppg MW. Planned BOP test pressure Rams test to 3500 psi/250 psi Annular test to 3500psi/250 psi Z-68 PTD Page 6 6/18/2013 Integrity Test — 8-3/4" hole LOT after drilling 20'-50' of new formation below previous shoe 7" Casing The upper VBRs will be changed to 7" rams to accommodate the 7" casin . 6-1/8" Production Interval Maximum anticipated BHP 3657 psi at @ TSGR at 8577' TVDss (8.2 ppg EMW) Maximum surface pressure 2799 psi (.10 psi/ft gas gradient to surface) Kick tolerance Infinite with >9.2 ppg frac gradient Assumes a 0.5 ppg kick intensity over the anticipated 8.2ppg pore pressure in the Sa /lvishak with an 8.5 ppg MW. Planned BOP test pressure Rams test to 3500 psi/250 psi Annular test to 3500psi/250 psi Integrity Test — 6-1/8" hole FIT after drilling 20'-50' of new hole 4-1/2" Liner Top Packer Test 3500 psi surface pressure Planned completion fluids 8.8 ppg Brine / 6.8 ppg Diesel Variance Request To avoid the risk of plugging the flow line with large rocks and wood encountered while drilling surface hole, it is requested to drill without a flow paddle for the first portion of the surface hole. After drilling past the larger rocks and wood sections, the flow paddle will be put back in the flow line (<1000 ft). Procedures/Safeguards with paddle removed: • Fluid levels will be monitored in the pits for both gains and losses while drilling. Alarms will be set to indicate if gain or loss of more than 5 bbls has occurred. `� • The well will be monitored for flow when the pumps are off at each connection. U • The planned 8.5 - 9.4 ppg fluid will provide over balance to formation fluid. Z-68 PTD Page 7 6/18/2013 Z-68 OPERATIONS SUMMARY Pre-Riq Work: 1. If necessary, level the pad and prepare location for rig move. 2. Remove well houses as necessary. Proposed Drilling Rig Operations: 1. MIRU Doyon 273 2. NU diverter spool & riser. Function test the diverter. 3. Take on Drillplex Spud Mud in the pits and stand back enough 4" drill pipe in the derrick to TD the surface interval. 4. MU 12-%4" drilling assembly with DIR/GR/RES on bent housing motor. Spud and directionally drill surface hole to the base of the permafrost. A gyro will be needed for the first -500'. Perform wiper trip at the base of the permafrost. 5. Drill the remainder of the surface hole to the planned surface hole TD in lower SV1, -40' TVD above the UG4. 6. Circulate bottoms up until hole is clean and POH racking back 4" pipe. If pumping out of the hole is required, trip back to TD and make final trip out on elevators. Lay down BHA. 7. Run and cement the 9-%", 40#, BTC -Mod, L-80 casing with torque rings, displacing cement with mud. Bump plug and hold pressure for 5 minutes. A TAM Portcollar_ is_optional for poor hole conditions. 8. ND diverter spool and NU and test casing/tubing head. NU the BOPE configured from top to bottom with annular preventer, 2-7/8" x 5-1/2" VBR, blind/shear, mud cross, and 2-7/8" x 5-1/2" VBR. Test rams and annular @ 250 -psi low / 3500 -psi high. 9. Pressure test the 9-%" casing to 250 psi low / 3500 psi high for 5 minutes low / 30 minutes high once 500 psi compressive strength has been achieved. 10. MU V/4" drilling BHA with PDC bit, bent housing motor and DIR/GR/RES/NEU/DEN/PWD and RIH to float collar picking up 4" drill pipe as required to TD the intermediate hole. 11. Drill to within 10' of shoe track and displace well to 9.2 ppg LSND drilling fluid. 12. Drill new formation to 20' below 9-%" shoe and perform LOT. Target a minimum 12.8 ppg EMW for 25 bbl kick tolerance. 13. Drill 8-3/4" intermediate interval to section TD in TSGR. Weight up drilling fluid using spike fluid maintaining the following density ranges: • 3295 ft MD - 6414 ft MD: 9.2-9.8ppg • 6414 ft MD - 8166 ft MD: 10.3-10.6 ppg i. Note: 10.3 gives a 100 psi overbalance to Kuparuk, 9.8 needed for HRZ • 8166 ft MD - TD: 10.6-11.0 ppg i. NOTE: 10.6 needed for Kingak 14. At TSGR, CBU until hole is clean (minimum 2x) and condition mud as necessary to run 7" casing. 15. Pump out to top Kingak, POH while rolling pump at 2 BPM to TKNG. Once at TKNG, POH on elevators only (if backreaming to get out of open hole is necessary, trip back to TD and POH on elevators final trip out). • MAD pass Kuparuk and Schrader formations as required for NEU/DEN data. 16. Change upper VBR pipe rams to 7" casing rams and test to 250 psi low / 3500 psi high. 17. RU and run 7", 26#, L-80, VAM TOP casing to TD. Cement the 7" casing to -650' TVD above the top of Na. � -3Q5i) I JVLIS> • Contingency: Run ECP with an ES Cementer for a two stage job depending on losses 18. Pressure test the 7" casing to 250 psi low / 3,500 psi high for 5 minutes low / 30 minutes high when the plug bumps. Z-68 PTD Page 8 6/24/2013 19. Immediately following pressure test, confirm that the OA is open by pumping -5 bbls of drilling fluid down to ensure annulus remains open for freeze protection. Continue to pump 1-2 bbls of drilling fluid down the OA after breakdown pressure every hour until the lead cement reaches 500 psi compressive strength. 20. Install the 7" casing pack -off through the stack and test to 250 psi low / 5 100 0 psi high for 5 minutes. 21. Change upper 7" casing rams to VBR casing rams and test to 250 psi low / 3500 psi high. 22. Freeze -protect the 9-%" x 7" annulus, once the lead cement has reached 500 psi compressive strength. 23. MU 6-%8" drilling BHA with PDC bit, bent housing motor, and DIR/GR/RES/NEU/DEN. RIH to the landing collar and begin drilling out shoe track. • Contingency: if the ES Cementer was run due to a 2 stage cement job, run in with a tricone bit to clean out the plug and drill the lateral. 24. Displace the well to 8.5 - 8.8 ppg Power -Pro SF fluid prior to fully drilling out shoe track. 25. Drill 20' of new formation and perform the planned FIT. • Need a 9.2 ppg for infinite kick tolerance 26. Drill 6-1/8" hole as per directional plan. • Contingency: If a tricone bit was run and ROP's begin to drop off significantly or if DLS are unobtainable, trip for a new bit. Circulate bottoms up and condition hole as necessary before tripping on elevators 27. Circulate bottom ups and condition the hole as necessary. Backream to the 7" shoe, MAD passing as required. 28. Trip in hole to TD and circulate / condition the hole as necessary until shakers clean up. Displace water based mud with 8.6-8.8 ppg Rheliant mineral oil based mud. POH on elevators. 29. MU and run 4-%2" 12.6# 13CR Hydril 521 sliding sleeve / swell packer liner to TD. 30. Once at TD drop a ball, and displace to TD of the liner. 31. When the ball lands, set liner hanger and liner top packer. Prior to pulling the running tool, perform a pressure test on the liner ton parker by testing the 7" casing x drill pipe annulus to 250 psi low / 3500psi high for 5 minIo /w 30 min high. 32. Pull liner running tool above liner top. Displace well to clean 8.6-8.8 ppg Brine. 33. POH, L/D the liner running tool. 34. R/U and run a 4-%", 12.6#, 13CR, VAMTOP tubing completion with GLMS. Space out and land the tubing with tubing tail inserted into the liner tieback sleeve. 35. Make up tubing hanger per FMC Rep. Land the tubing hanger, and run in lock down screws. 36. Displace tubing and IA to 8.8 ppg brine. 37. Reverse circulate filtered 8.8 ppg brine and corrosion inhibitor into the tubing x casing annulus. 38. Drop ball/rod and set packer and individually test the tubing and annulus to 3,500 psi for 30 minutes. Record each test. 39. Shear the DCK valve. 40. Install TWC and test from above to 250 psi low / 3500 psi high for 5 minutes each and from below to 250 psi low / 3500 psi high for 5 minutes low / 30 minutes high. 41. Nipple down the BOPE. Nipple up the adaptor flange and double master valves and test to 5,000 psi with diesel. 42. RU DSM lubricator and pressure test. Pull TWC. 43. RU circulating lines. Freeze protect the well to -100' MD below the base of permafrost and allow diesel to U-tube reaching equilibrium. Z-68 PTD Page 9 6/18/2013 44. Install a BPV. 45. Secure the well. Rig down and Move Off. Planned Post -Rig Operations: 1. Pull BPV, Pull Ball, Rod and RHC Plug with slickline. 2. Pull shear valve and dummies, install GI -Vs. 3. Open sliding sleeves as required by NWD PE. Flow back and clean up the well. 4. Close sleeves as needed to attain desired initial arrangement for production. 5. Scale Inhibition Treatment 6. Install flow lines Z-68 PTD Page 10 6/18/2013 Z-68 Drilling Critical Issues POST THIS NOTICE IN THE DOGHOUSE I. Well Control / Reservoir Pressures: A. Surface Hole: No overpressure is expected in the surface hole and hydrates are not expected on Z ' pad. B. Intermediate Hole: Pore pressure is anticipated to be 9.5 ppg beginning in the CM1 at 5871 TVDss. Drilling fluid density will increase to 10.3 ppg prior to drilling into the CM1 and remain over balanced to predicted pore pressure throughout the interval, weighting up to a 10.6 ppg before entering the Kingak for stability reasons. A minimum kick tolerance of 25 bbls should be achieved prior to drilling interval. C. Production Hole: The pore pressure in the production interval is anticipated to be normally pressured. The highest anticipated pore pressure is 8.2 ppg. Expected FIT provides an infinite kick tolerance. The interval will be drilled with an over -balance utilizing an 8.5 ppg fluid. II. Lost Circulation/Breathing A. Surface Hole: Lost circulation is considered a low probability. B. Intermediate Hole: Lost circulation is considered a moderate risk due to crossing 4 faults in this section. Utilize good hole cleaning practices to avoid high ECD and prevent pack -off potential which could induce breathing. C. Production Hole: Breathing and/or lost circulation is a possibility but not expected. When running swell packers, follow running speeds to ensure that the formation is not being surged. III. integrity I esting Test Point Test Depth Test pe EMW (lb/gal) 9-%" Shoe 20'-50' from the 9-5/8" Shoe LOT 12.8 ppg minimum (25 bbls T' shoe 20'-50' from the 7" shoe FIT 9.0 ppg minimum (infinite) >12 ppg target (infinite) IV. Hydrogen Sulfide A. As Z -Pad is considered an H2S site, refer to the "Hydrogen Sulfide" SOP for the appropriate ✓ operational guidelines. The max recorded H2S readings on the pad were 200 ppm in Z-67 March 2012. V. Faults Formation Where Encounter Fault MD Intersect TVDss Intersect Throw Direction Uncertainty Lost Circ and Magnitude Potential Fault #1 (Highland State Fault), UG3 3,830.0 3,587.0 200' dtsw +/- 150' MD Med Fault #2 (fault in TJF-TJE) 8,584.0 7,750.0 50' dtw +/- 150' MD Med Fault #3 (fault in TJD-TJC) 9,220.0 8,271.0 20'dtsw +/- 150' MD Med Fault #4 (possible smal fault in 10,612.0 8,841.0 10'dts +/- 100' MD Med Zone4 Fault #8 (fault in SB OA) 5,059.0 4,684.0 40'dtsw +/- 150' MD Med VI. Anti -Collision Issues A. The closest wells to Z-68 are: Z-34 (42ft), Z-17 (70ft) and planned wells Z-203 (7.8 ft), Z-42 (15.8 ft), Z-105 (23.3 ft), Z-71(25.9 ft), and Z-214 (74.6 ft) which are all in surface hole. All wells pass major risk criteria CONSULT THE Z -PAD DATA SHEET AND THE WELL PLAN FOR ADDITIONAL INFORMATION. Z-68 PTD Page 11 6/18/2013 r W11LHEAD = FMC AGRJATOR = --^----- KB. BF. E_LE_V Msx Angle = Datum MD = 20", 94#, H-40 INSULATED CONDUCTOR 1--� 80' 9-5/8" CSG, 40#, L-80 BTC, ID = 8.835^ 3295' GAS LFT MANDRB_S ST MD TVD DEV TYPE VLV LATCH PORT DATE 8 3213 7 4700 6 5300 5 6000 4 6550 3 7000 2 7600 1 8374 Minimum ID = 3.813" 4-1/2" HES X NIPPLE 4-112" TBG, 12.6#,13Cr VT,.0152 bpf, ID = 9455' 3.958' 7" CSG, 26#, L-80 VT HC, ID = 6.276- 9605' Slidina Sleeves ID 3.813 No Ste Depth Open/Close Date 10 Siding Sleeves proposed at this time Placement w ill be determined before completion 4-1/2" LNR, 12.6#, 130r,VT K)= 1958" 11051' Z-68 F 7sA i' NOTES: Proposed 500' —{9-518" TAM PORT COLLAR +� 2-00-0---]—F4-1/2- HES X NP ID = 3.813" 3864' 1--� Proposed TOC 9192- 1—{4-1/2" HES X NP, D = 3.813- 9262' 1--�Sapphire Perm Pressure Gauge 9298' 7" X 4-1/2" HES TNT PKR, D = 3.856 9368' -1/2- HES X NP, ID = 3.813- 9438- j--2-4-1/2" HES X NP, K)= 3.813" 94555- —i BKR HNG / LTP 9450' 4-1/2" WLEG, 11) = 3.958" tasyaw en aw en vacKers No I Size I Type I MD I Length I Date 10 Sw eff Packers proposed at this time Placement w ill be determined before completion MWIMMUR -, •• � Pioposed Completion-- PRUDHOE BAY UNIT WELL: Z-68 PERT No: API No: BP Exploration (Alaska) Z-68 (P12c) v6 Proposal Geodetic Report Schlumberger (Def Plan) Report Date: February 21, 2013 - 07:33 AM Survey / OILS Computation: Minimum Curvature / Lubinski Client: BP Exploration Alaska Vertical Section Azimuth: 110.327 *(True North) Field: Prudhoe Bay Unit - WOA Vertical Section Origin: 0.000 ft, 0.000 ft Structure / Slot: Well: Z -PAD / Slot (SP) Plan Z-68 (SP) v6TVD ®O TVD Reference Datum: Rotary Table 102.825 ft above Borehole: Plan Z-68 �B SeabedGroundevation: Elevation: •n 54 000 ft above MSL API#: 50029xxxxx00 " � Magnetic Declination: 20.082 ° Survey Name: Z-68 (P12c) v6 Total Gravity Field Strength: 1001.9930mgn (9.80665 Based) Survey Date: February 21, 2013 Total Magnetic Field Strength: 57607.676 nT Tort / AHD / DDI / ERD Ratio: 146.674 ° / 5078.236 ft / 5.961 / 0.564 Magnetic Dip Angle: 80.976a Coordinate Reference System: NAD27 Alaska State Plane, Zone 04, US Feet Declination Date: July 30, 2013 Location Lat I Long: N 70° 17' 51.59215", W 149° 11' 19.68329" Magnetic Declination Model: BGGM 2012 Location Grid N/E Y/X: N 5959100.230 f1US, E 600170.920 ftUS North Reference: True North CRS Grid Convergence Angle: 0.7637 ° Grid Convergence Used: 0.0000 ° Grid Scale Factor: 0.9999114 Total Corr Mag North ->True North: 20.0823 ° GI 369.83 Local Coord Referenced To: Well Head Comments MD Incl Azim True TVDSS TVD VSEC NS EW TF DLS Directional Northing Easting (ft) (") V) (ft) (ft) (ft) (ft) (ft) (°) (°/100ft) Difficulty Index (ftUS) (ftUS) RTE 0.00 - 0.00 30.00 -102.83 0.00 0.00 0.00 0.00 30M N/A 0.00 5959100.23 600170.92 Ndg Bid 1.5/100 300.00 0.00 30.00 197.18 300.00 0.00 0.00 0.00 30M 0.00 0.00 5959100.23 600170.92 GI 369.83 1.05 30.00 267.00 369.63 0.11 0.55 0.32 30M 1.50 0.00 5959100.79 600171.23 400.00 1.50 30.00 297.16 399.99 0.22 1.13 0.65 30M 1.50 0.29 5959101.37 600171.56 End Nudg 500.00 3.00 30.00 397.08 499.91 0.88 4.53 2.62 30M 1.50 1.20 5959104.80 600173.48 Cry 1/100 700.00 3.00 30.00 596.81 699.63 2.64 13.60 7.85 49.22M 0.00 1.67 5959113.93 600178.59 Cry 2/100 800.00 2.99 49.22 696.68 799.50 4.34 17.57 11.14 88.38M 1.00 1.92 5959117.95 600181.82 Cry 3/100 900.00 2.98 88.38 796.55 899.37 8.01 19.35 15.71 143.74M 2.00 2.19 5959119.78 600186.37 1000.00 3.43 143.74 896.42 999.24 12.91 17.01 20.07 169.17M 3.00 2.45 5959117.51 600190.76 1100.00 5.71 169.17 996.10 1098.93 17.98 9.71 22.78 171.63M 3.00 2.67 5959110.24 600193.56 End Cry 1118.00 6.19 171.63 1014.00 1116.83 18.91 7.87 23.09 171.63M 3.00 2.71 5959108.41 600193.90 SV6 1138.11 6.19 171.63 1034.00 1136.83 19.95 5.73 23.40 171.63M 0.00 2.73 5959106.27 600194.24 Cry 1.5/100 1168.00 6.19 171.63 1063.71 1166.54 21.50 2.54 23.87 172.63M 0.00 2.76 5959103.09 600194.75 1200.00 6.65 172.63 1095.51 1198.34 23.19 -1.00 24.36 174.16M 1.50 2.81 5959099.55 600195.29 Cry 3.5/100 1259.45 7.53 174.16 1154.51 1257.33 26.51 -8.29 25.20 176.47M 1.50 2.90 5959092.28 600196.22 1300.00 8.91 176.47 1194.64 1297.46 28.95 -14.07 25.66 12.3R 3.50 2.98 5959086.51 600196.76 1400.00 12.35 179.96 1292.91 1395.74 35.80 -32.49 26.15 8.87R 3.50 3.19 5959068.09 600197.49 1500.00 15.82 181.94 1389.89 1492.72 43.83 -56.81 25.69 6.95R 3.50 3.37 5959043.77 600197.37 1548.14 17.49 182.61 1436.01 1538.83 48.10 -70.59 25.14 HS 3.50 3.46 5959029.98 600197.00 1548.94 17.49 182.61 1436.77 1539.60 48.17 -70.83 25.13 89.461 0.00 3.46 5959029.74 600196.99. Target 1562.81 17.50 181.00 1450.00 1552.83 49.50 -75.00 25.00 33.761- 3.50 3.48 5959025.58 600196.92 1600.00 18.60 178.73 1485.36 1588.19 53.53 -86.52 25.03 31.61- 3.50 3.55 5959014.06 600197.10 End Cry 1640.05 19.80 176.56 1523.18 1626.01 58.61 -99.68 25.58 HS 3.50 3.61 5959000.91 600197.83 EOCU 1730.20 19.80 176.56 1608.00 1710.83 70.92 -130.16 27.41 HS 0.00 3.69 5958970.46 600200.06 SV5 1807.78 19.80 176.56 1681.00 1783.83 81.51 -156.40 28.99 HS 0.00 3.75 5958944.24 600201.99 Base Perm 1875.81 19.80 176.56 1745.00 1647.83 90.80 -179.40 30.37 HS 0.00 3.80 5958921.26 600203.68 SV4 1935.33 19.80 176.56 1801.00 1903.83 98.93 -199.53 31.58 HS 0.00 3.84 5958901.15 600205.15 SV3 2458.25 19.80 176.56 2293.00 2395.83 170.31 -376.37 42.20 HS 0.00 4.07 5958724.49 600218.13 SV2 2670.82 19.80 176.56 2493.00 2595.83 199.33 -448.26 46.52 HS 0.00 4.14 5958652.67 600223.40 SV1 2999.24 19.80 176.56 2802.00 2904.83 244.17 -559.32 53.19 HS 0.00 4.23 5958541.72 600231.55 Drilling Office 2.6.1166.0 Prudhoe Bay Unit - WOA\Z-PAD\Plan Z-68 (SP) v6\Plan Z-682-68 (P12c) v6 2/21/2013 7:41 AM Page 1 of 3 Comments MD Incl Azim True TVDSS TVD VSEC NS EW TF DLS Directional Northing Easting (ft) (°) (°) (ft) (ft) (ft) (ft) (ft) (°) (°1100ft) Difficulty Index (ftuS) (ftuS) 9 518" Csg - - 3294.71 19.80 176.56 3080.00 -- 3182.83 284.51 -659.24 59.19 HS 0.00 4.30 5958441.89 600238.88 Cry 3.5/100 3326.62 19.80 176.56 3110.02 3212.85 288.86 -670.03 59.84 97.91L 0.00 4.31 5958431.11 600239.67 UG4 3337.23 19.75 175.48 3120.00 3222.83 290.34 -673.61 60.08 96.89L 3.50 4.32 5958427.54 600239.97 UG4A 3376.52 19.64 171.41 3157.00 3259.83 296.33 -686.76 61.59 93.06L 3.50 4.34 5958414.41 600241.66 3400.00 19.61 168.96 3179.11 3281.94 300.28 -694.53 62.94 90.761 3.50 4.36 5958406.66 600243.10 3500.00 19.86 158.61 3273.27 3376.09 320.32 -726.82 72.35 81.01L 3.50 4.43 5958374.50 600252.94 3600.00 20.69 148.78 3367.10 3469.93 345.47 -757.76 87.70 71.79L 3.50 4.49 5958343.78 600268.70 Z-68 UG Tgt 3698.64 22.00 140.00 3459.00 3561.83 375.17 -786.82 108.61 100.15L 3.50 4.55 5958315.00 600290.00 3700.00 21.99 139.88 3460.26 3563.08 375.61 -787.21 108.94 100.04L 3.50 4.55 5958314.62 600290.33 UG3 (Faulted) 3746.06 21.77 135.59 3503.00 3605.83 390.84 -799.90 120.47 96.06L 3.50 4.58 5958302.08 600302.03 3800.00 21.64 130.50 3553.12 3655.95 409.22 -813.51 135.04 91.33L 3.50 4.61 5958288.67 600316.78 Fault #1 3836.45 21.65 127.04 3587.00 3689.83 421.97 -821.92 145.52 88.11L 3.50 4.62 5958280.39 600327.37 3900.00 21.83 121.05 3646.04 3748.87 444.82 -835.08 165.00 82.55L 3.50 4.66 5958267.50 600347.02 4000.00 22.54 111.96 3738.66 3841.49 482.26 -851.85 198.72 74.13L 3.50 4.71 5958251.19 600380.96 UGI 4070.94 23.34 105.93 3804.00 3906.83 509.86 -860.79 224.84 68.57L 3.50 4.74 5958242.59 600407.19 4100.00 23.73 103.57 3830.65 3933.47 521.41 -863.74 236.06 66.41 L 3.50 4.75 5958239.79 600418.45 4200.00 25.32 96.05 3921.65 4024.47 562.12 -870.72 276.89 59.57L 3.50 4.80 5958233.36 600459.37 4300.00 27.25 89.45 4011.33 4114.15 604.24 -872.75 321.06 53.65L 3.50 4.84 5958231.91 600503.55 End Cry 4354.87 28.42 86.20 4059.85 4162.67 627.90 -871.77 346.65 HS 3.50 4.87 5958233.24 600529.13 UG Ma 4384.61 28.42 86.20 4086.00 4188.83 640.61 -870.83 360.78 HS 0.00 4.87 5958234.37 600543.24 UG Mb1 4422.13 28.42 86.20 4119.00 4221.83 657.12 -869.65 378.60 HS 0.00 4.88 5958235.79 600561.04 UGMb2 4477.85 28.42 86.20 4168.00 4270.83 681.32 -867.89 405.06 HS 0.00 4.89 5958237.90 600587.47 UG_Mc 4547.21 28.42 86.20 4229.00 4331.83 711.45 -865.70 438.00 HS 0.00 4.90 5958240.52 600620.38 SB Na 4618.84 28.42 86.20 4292.00 4394.83 742.57 -863.44 472.02 HS 0.00 4.91 5958243.24 600654.37 SB Nb 4648.41 28.42 86.20 4318.00 4420.83 755.41 -862.51 486.07 HS 0.00 4.92 5958244.35 600668.39 SB OA 4822.38 28.42 86.20 4471.00 4573.83 830.99 -857.02 568.69 HS 0.00 4.95 5958250.94 600750.93 SB__OBa 4890.60 28.42 86.20 4531.00 4633.83 860.63 -854.87 601.10 HS 0.00 4.96 5958253.53 600783.30 SB_OBb 4925.85 28.42 86.20 4562.00 4664.83 875.94 -853.76 617.84 HS 0.00 4.97 5958254.86 600800.03 SB_OBC 4982.71 28.42 86.20 4612.00 4714.83 900.64 -851.96 644.84 HS 0.00 4.97 5958257.01 600827.00 SB OBd 5046.36 28.42 86.20 4668.00 4770.83 928.30 -849.96 675.08 HS 0.00 4.98 5958259.42 600857.21 Fault #8 5064.58 28.42 86.20 4684.00 4786.83 936.20 -849.38 683.72 HS 0.00 4.99 5958260.11 600865.84 SBOBe 5073.67 28.42 86.20 4692.00 4794.83 940.15 -849.09 688.04 HS 0.00 4.99 5958260.46 600870.16 SB70Bf 5119.16 28.42 86.20 4732.00 4834.83 959.91 -847.66 709.65 HS 0.00 4.99 5958262.18 600891.74 SB__OBf Base 5173.74 28.42 86.20 4780.00 4882.83 983.62 -845.94 735.57 HS 0.00 5.00 5958264.25 600917.63 CM -2 5593.32 28.42 86.20 5149.00 5251.83 1165.89 -832.70 934.85 HS 0.00 5.06 5958280.14 601116.70 CM -1 6414.28 28.42 86.20 5871.00 5973.83 1522.53 -806.81 1324.76 HS 0.00 5.15 5958311.22 601506.19 TLBK 6766.78 28.42 86.20 6181.00 6283.83 1675.65 -795.69 1492.17 HS 0.00 5.19 5958324.57 601673.43 THRZ 6952.12 28.42 86.20 6344.00 6446.83 1756.17 -789.84 1580.20 HS 0.00 5.20 5958331.59 601761.37 TKLB 7220.47 28.42 86.20 6580.00 6682.83 1872.74 -781.38 1707.65 HS 0.00 5.23 5958341.75 601888.68 TKC4 7246.62 28.42 86.20 6603.00 6705.83 1884.10 -780.55 1720.07 HS 0.00 5.23 5958342.74 601901.09 LCU 7286.42 28.42 86.20 6638.00 6740.83 1901.39 -779.30 1738.98 HS 0.00 5.23 5958344.25 601919.97 TKA4 7303.48 28.42 86.20 6653.00 6755.83 1908.80 -778.76 1747.08 HS 0.00 5.24 5958344.89 601928.06 TMLV 7333.04 28.42 86.20 6679.00 6781.83 1921.64 -777.83 1761.12 HS 0.00 5.24 5958346.01 601942.09 Cry 4/100 7987.34 28.42 86.20 7254.42 7357.25 2205.88 -757.19 2071.87 29.45R 0.00 5.29 5958370.79 602252.51 8000.00 28.87 86.72 7265.54 7368.36 2211.43 -756.81 2077.93 29R 4.00 5.29 5958371.24 602258.57 8100.00 32.42 90.33 7351.57 7454.39 2258.76 -755.59 2128.85 25.8811 4.00 5.33 5958373.15 602309.46 TKNG 8166.57 34.83 92.37 7407.00 7509.83 2293.62 -756.48 2165.70 24.19R 4.00 5.35 5958372.75 602346.32 End Cry 8171.21 35.00 92.50 7410.80 7513.63 2296.14 -756.59 2168.35 HS 4.00 5.35 5958372.68 602348.97 TJG 8190.99 35.00 92.50 7427.00 7529.83 2306.94 -757.08 2179.68 HS 0.00 5.35 5958372.33 602360.30 TJF 8577.97 35.00 92.50 7744.00 7846.83 2518.25 -766.77 2401.44 HS 0.00 5.39 5958365.61 602582.15 Fault 2 8587.74 35.00 92.50 7752.00 7854.83 2523.58 -767.01 2407.04 HS 0.00 5.39 5958365.44 602587.75 Drilling Office 2.6.1166.0 Prudhoe Bay Unit - WOA\Z-PAD\Plan Z-68 (SP) v6\Plan Z-682-68 (P12c) v6 2/21/2013 7:41 AM Page 2 of 3 Comments MD Incl Azim True TVDSS TVD VSEC NS EW TF DLS Directional Northing Easting (ft) V) (') (ft) (ft) (ft) (ft) (ft) V) (°/100ft) Difficulty Index (ftuS) (ftuS) TJE 8790.39 35.00 92.50 7918.00 8020.83 2634.23 -772.08 2523.16 HS 0.00 5.41 5958361.92 602703.92 TJD 9087.03 35.00 92.50 8161.00 8263.63 2796.21 -779.50 2693.15 HS 0.00 5.43 5958356.76 602873.97 Fault 9221.32 35.00 92.50 8271.00 8373.83 2869.54 -782.86 2770.10 HS 0.00 5.44 5958354.43 602950.95 TJC 9343.40 35.00 92.50 8371.00 8473.83 2936.20 -785.92 2840.05 HS 0.00 5.45 5958352.31 603020.94 TJB 9466.69 35.00 92.50 8472.00 8574.83 3003.52 -789.00 2910.70 HS 0.00 5.46 5958350.16 603091.62 TJA 9520.41 35.00 92.50 8516.00 8618.83 3032.85 -790.34 2941.48 HS 0.00 5.46 5958349.23 603122.41 Z-68 TSAG Tgt 9591.21 35.00 92.50 8574.00 8676.83 3071.51 -792.12 2982.06 HS 0.00 5.47 5958348.00 603163.00 TSGR 9594.88 35.00 92.50 8577.00 8679.83 3073.51 -792.21 2984.16 HS 0.00 5.47 5958347.94 603165.10 7' Csg -- 9604.88 35.00 92.50 8585.19 8688.02 3078.97 -792.46 2989.89 HS 0.00 5.47 5958347.76 603170.83 Cry 9.25/100 9621.21 35.00 92.50 8598.57 8701.40 3087.90 -792.87 2999.25 39.07R 0.00 5.47 5958347.48 603180.20 TSHU 9630.32 35.66 93.41 8606.00 8708.83 3092.92 -793.14 3004.50 38.33R 9.25 5.47 5958347.28 603185.46 9700.00 40.88 99.52 8660.71 8763.54 3134.79 -798.12 3047.32 33.53R 9.25 5.52 5958342.86 603228.33 TEIL 9775.29 46.82 104.79 8715.00 8817.83 3186.38 -809.22 3098.22 29.72R 9.25 5.56 5958332.45 603279.37 9800.00 48.81 106.29 8731.59 8834.42 3204.63 -814.12 3115.86 28.71 R 9.25 5.57 5958327.78 _ 603297.07 TSAD (46P) 9816.01 50.12 107.22 8742.00 8844.83 3216.77 -817.63 3127.51 28.11R 9.25 5.58 5958324.43 603308.77 PGOC 9853.08 53.16 109.24 8765.00 8867.83 3245.81 -826.73 3155.10 26.65R 9.25 5.60 5958315.70 603336.48 45N 9870.03 54.56 110.11 8775.00 8877.83 3259.50 -831.34 3168.00 26.34R 9.25 5.61 5958311.26 603349.43 9900.00 57.05 111.57 8791.84 8894.67 3284.28 -840.16 3191.16 25.5211 9.25 5.63 5958302.75 603372.70 44N 9924.90 59.14 112.73 8805.00 8907.83 3305.41 -848.13 3210.73 24.91R 9.25 5.64 5958295.04 603392.38 43N 9995.48 65.09 115.75 8838.00 8940.83 3367.61 -873.77 3267.57 23.49R 9.25 5.68 5958270.16 603449.55 10000.00 65.48 115.94 8839.89 8942.72 3371.70 -875.56 3271.26 23.41 R 9.25 5.68 5958266.42 603453.26 42N 10038.89 68.79 117.47 8855.00 8957.83 3407.30 -891.66 3303.26 22.82R 9.25 5.70 5958252.75 603485.47 10100.00 74.01 119.75 8874.49 8977.31 3464.59 -919.40 3354.08 22.0911 9.25 5.73 5958225.70 603536.65 41N 10168.79 79.92 122.17 8890.00 8992.83 3530.42 -953.87 3411.52 21.54R 9.25 5.76 5958191.99 603594.54 41P 10194.43 82.13 123.05 ^" 8894.00 8996.83 3555.16 -967.52 3432.84 21.4R 9.25 5.77 5958178.63 603616.04 10200.00 82.61 123.24 8894.74 8997.57 3560.54 -970.54 3437.47 21.3811 9.25 5.78 5958175.68 603620.71 90° Pt 10285.76 90.00 126.12 8900.27 9003.09 3643.39 -1019.21 3507.78 21.19R 9.25 5.82 5958127.95 603691.66 10300.00 91.23 126.60 8900.11 9002.94 3657.07 -1027.65 3519.25 21.2R 9.25 5.82 5958119.67 603703.23 10400.00 99.84 129.98 8890.47 8993.30 3751.65 -1089.24 3597.30 21.5311 9.25 5.86 5958059.13 603782.09 End Cry 10444.20 103.64 131.53 8881.46 8984.30 3792.20 -1117.48 3630.07 HS 9.25 5.88 5958031.33 603815.24 Fault 4 10612.00 103.64 131.53 8841.89 8944.72 3944.23 -1225.59 3752.15 HS 0.00 5.91 5957924.87 603938.73 10950.68 103.64 131.53 8762.00 8864.83 4251.OB -1443.78 3998.56 HS 0.00 5.95 5957710.00 604188.00 4-1/2"Lnr 11050.60 103.64 131.53 8738.43 8841.25 4341.61 -1508.15 4071.25 HS 0.00 5.96 5957646.61 604261.54 TD 11050.68 103.64 131.53 8738.41 8841.24 - 4341.69 -1508.20 4071.31 0.00 5.96 5957646.56 604261.60 Legal Description: Northing (Y) Easting (X) Surface: 4290.4 FSL 2506.7 FEL S19 T11 N R12E UM �- 5959100.230 600170.920- TSag Tgt: 3498 FSL 4808 FEL 20 T1 1N R12EUM 5958348.000 603163.000 BHL: 2781 FSL 3721 FEL 20 T1 1N R12EUM 5957646.560 604261.600 Drilling Office 2.6.1166.0 Prudhoe Bay Unit - WOA\Z-PAD\Plan Z-68 (SP) v6\Plan Z-682-68 (P12c) v6 2/21/2013 7:41 AM Page 3 of 3 by <> Schlumberger Z-68 (PI 2c) FIELD Prudhoe Bay Unit - WOA S RUC URE Z -PAD Me9rwlic Parameters Sree L—Wa NND27 N -k. Stets Plane, Zone 01, US Feet Miscelbreoua —.1 BGGM MM2 Gip: BO.a.. Dab: July 302013 Let'. N 70 17 51 592 NOMtlrp: 595910023 MUS Grb Conv: 0.761• Sbt: Bbt(SP) NDRef', Rotary T—(l M, Mabova MSL) Mae Gee: 20.082' FS: 57607 7n Lon: W1491119.— Ent,: E00170926U9 Scab Faet: 0.99991110 Plan: ZE (P12e)14 Srey Dete:—,y21.2013 0 1000 2000 3000 0 500 3000 RTE 0 -� .................................................... 500 1000 0 1500 C7 Q) Co U F- 2000 2500 3000 4000 5000 c� 6000 ,n 7000 8000 i `.,,...... II 8800 3500 :.................................... 0 500 1, Vertical Section (ft) Azim = 175° Scale = 1:500(ft) O ..:...................................i.................................._........ ......................... Civ 3.5)100 = A.............._.._-:.._.._.._.._.._.._.._.._ ..._.._.._.._....._.._. _ _.._ Z-68 UG Tgt Fault #1 .._.:_. ._.._.._s......................... :.......................... :....... a kedj— _.�_.._ i_.._.._.._.._.._ .......... ._.._.--..—.._„_--_---„—i._.._. ......:................eltd•cro,...«....................................;..................................<........ , ._.2x..e.. e..e:. a.•=.._=..o..e..e.._.._.._.._. et.e..o..:..c..o..=.. x.. e.•a2•—..=. .. .............. _.._.._.._.._.._.;_,._.._.._.._.._.._.._.._.._:._.._.._.._.._..-..-..-..-:._.._. ease ................................................ j-------------------------- j.—.,—. ............................... ............ Up--..—. _.......................... _.._ ..................................... p.......... .................... ............... ....................... v........ 7 Civ 41100 End Civ ._ �:::■s:■::x::x::x::x::s::xex::s::x::a::x:sxssx::x:::t:x:: xe:x::s: Fault 2 _ ......................... ......................... .......... ............ ...... ;E;;.......;.r;......; Fault 3 ................................ ......................... .................. �_ ...... Z-68 SAG : �; Crv9 0 1000 2000 30 Vertical Section (ft) Azim = 90° Scale = 1:1000(ft) Origin = 0 N/ -S 2800 3200 3600 4000 P+2."0 ..-..-.....:......... .._..-..-.._.._..:.._.. _.._.._....._.. _.._..:.._.. .................... ,—„— Z..?87.......................... .......................... .._.._.._..—.._.._.. 7” Cs9 ... _. .._.. _.. _.. _.._..—.. _.. _.._.._.. _..—.. �.._.._.._.. _..... _..—..—.._..—..—.._.._.._.._.. _.._.._.._..—..:..._.._.. _.. _.._.. _.._.._....._.._.._.._.._.._.. 4-112' Lnr TD .....................................................................:..........—.................................. .. ........... _.._.._.._.......... ..._.._.._.._.._.._.._.._.._..-..-.._.._.._.._.._.. `_.._ ._.._. _ -.._ -x.._... _Yoccec:—eextte:c=ec=..�.. ....... ............=..=::—.._..�• •_ •.. _.._.._.._.._.._ ..t.._.._..—A0°. At. ........ .......... _. :: _.._.._.._.._ ._.._.._...._.._.._ _.._.._...._.._.._.._.. . �..�..�..�r.................................... ............. Vertical Section (ft) Azim = 125° Scale = 1:400(ft) Origin = 0 N/ -S, 0 E/ -V 3000 1000 1000 000 000 000 Tgt .25/100 (P12c) v6 8800 600 Ndg 0 x o -600 0 m u m U Co J v -1200 V -1800 hp 0 Schlumberger Z-68 (P1 2c) ELD Prudhoe Bay Unit - WOA G RDD.DRE Z -PAD Magnetk Parameters Su—Location NAD2]Xlaa State P—Zone 04. 1)S Feet Miscelbneous m-1 6GGM 2012 Dip: 60.9]6' Date: July 30, 2013 to N ]01]51.592 NOMing-. 5959100.23 M15 Grb Com: 0.]64° Gbt'. Sbl(SP) ND Ret: R -f T—(10282 above MSL) Mag Dec: 20.082' F6. 5]601.InT Lon: W1491119.663 E -IN 6001]0.92 tt1u Scale Fact: 0.999911 E0 PWn: ZbB (P12c)W 6ny Date: Febm 21,2013 0 600 1200 1800 2400 3000 3600 4200 4800 0 600 1200 1800 2400 3000 3600 4200 4800 <<< W Scale = 1:600(ft) E >>> 600 0 -600 -1200 1 -1800 70 Project: Prudhoe Bay Site: Pb Z Pad Well: Plan Ivi Z-68 (SP) v6 Wellbore: Plan Z-68 65 Design: Plan #12c Z-68 v6 /Z -34/Z-34 60 -- I I Plan Ivi Z- 1 (NP) v6IF Ian #7b Z-7 v6 55- 5 50- 5045 45 — — Z-" r c6 Q N (n 35- N i N U 0 30 N c 0 025- 25 i 20-- 2015 15 - -- - 10 -- I I 0 0 75 150 225 300 375 450 525 600 675 750 825 900 975 1050 11125 1200 1275 1350 1425 Measured Depth (150 usft/in) Company: North America - ALASKA- BP Project: Prudhoe Bay Reference Site: PB Z Pad Site Error: 0.00usft Reference Well: Plan Ivi Z-68 (SP) v6 Well Error: 0.00usft Reference Wellbore Plan Z-68 Reference Design: Plan #12c Z-68 v6 BP Anticollision Report Local Co-ordinate Reference: TVD Reference: MD Reference: North Reference: Survey Calculation Method: Output errors are at Database: Offset TVD Reference: Well Plan Ivi Z-68 (SP) v6 Z-68 P273 Plan @ 102.83usfl (Parker 273) Z-68 P273 Plan @ 102.83usft (Parker 273) True Minimum Curvature 1.00 sigma EDM R5K - Alaska PROD - ANCP1 Offset Datum Reference Plan #12c Z-68 v6 alter type: GLOBAL FILTER APPLIED: All wellpaths within 200'+ 100/1000 of reference nterpolation Method: MD Interval 5.00usft Error Model: ISCWSA )epth Range: Unlimited Scan Method: Tray. Cylinder North Results Limited by: Maximum center -center distance of 1,300.37usft Error Surface: Elliptical Conic Survey Tool Program Date 2/21/2013 From To (usft) (usft) Survey (Wellbore) Tool Name Description 46.93 500.00 Plan #12c Z-68 v6 (Plan Z-68) GYD-GC-SS Gyrodata gyro single shots 500.00 2,000.00 Plan #12c Z-68 v6 (Plan Z-68) MWD MWD - Standard 500.00 3,295.00 Plan #12c Z-68 v6 (Plan Z-68) MWD+IFR+MS MWD + IFR + Multi Station 3,295.00 4,800.00 Plan #12c Z-68 v6 (Plan Z-68) MWD MWD - Standard 3,295.00 9,605.00 Plan #12c Z-68 v6 (Plan Z-68) MWD+IFR+MS MWD + IFR + Multi Station 9,605.00 11,050.60 Plan #12c Z-68 v6 (Plan Z-68) MWD MWD - Standard 9,605.00 11,050.68 Plan #12c Z-68 v6 (Plan Z-68) MWD+IFR+MS MWD + IFR + Multi Station 2/21/2013 8:13:50AM Page 2 of 4 COMPASS 5000.1 Build 61 BP Anticollision Report Company: North America -ALASKA- BP Local Co-ordinate Reference: Well Plan Ivi Z-68 (SP) v6 Project: Prudhoe Bay ND Reference: Z-68 P273 Plan @ 102.83usft (Parker 273) Reference Site: PB Z Pad MD Reference Z-68 P273 Plan @ 102.83usft (Parker 273) Site Error: 0.00usft North Reference: True Reference Well: Plan Ivi Z-68 (SP) v6 Survey Calculation Method: Minimum Curvature Well Error: 0.00usft Output errors are at 1.00 sigma Reference Wellbore Plan Z-68 Database: EDM RSK- Alaska PROD -ANCP1 Reference Design: Plan #12c Z-68 v6 Offset ND Reference: Offset Datum Summary Reference Offset Centre to No -Go Allowable Measured Measured Centre Distance Deviation Warning Site Name Depth Depth Distance (usft) from Plan Offset Well - Wellbore - Design (usft) (usft) (usft) (usft) PB Z Pad Plan Ivi Z-42 (NK) v6 - Plan Z-42 - Plan #8 Z-42 3,735.39 3,780.00 77.61 67.11 15.79 Pass - Major Risk Plan Ivi Z-70 (SF) - Plan Z-70 - Plan #19 Z-70 425.56 430.00 251.06 7.73 243.33 Pass - Major Risk Plan Ivi Z-71 (NP) v6 - Plan Z-71 - Plan #7b Z-71 v 1,296.78 1,305.00 46.01 20.20 25.89 Pass - Major Risk Plan Kup Z-105 (SN) v6 - Plan Z-105 - Plan #4 Z-1 419.83 400.00 30.90 7.57 23.34 Pass - Major Risk Plan Kup Z-105 (SN) v6 - Plan Z-105PB1 - Plan # 419.83 400.00 30.90 7.57 23.34 Pass - Major Risk Plan Sch Z-201 (NM) v6 - Plan Z-201 - Plan #6 Z-2 869.90 850.00 131.05 13.37 117.71 Pass - Major Risk Plan Sch Z-202 (NB) v6 - Plan Z-202 - Plan #2 Z-2 4,889.56 9,120.00 428.42 111.54 319.87 Pass - Major Risk Plan Sch Z-203 (SO) v6 - Plan Z-203 - Plan #3 Z-2 434.96 415.00 15.66 7.84 7.83 Pass - Major Risk Plan Sch Z-211 (SJ) v6 - Plan Z-211 - Plan #5 Z-2 1,380.66 1,385.00 174.58 20.76 154.37 Pass - Major Risk Plan Sch Z-212(NO) v6 - Plan Z-212 - Plan #3 Z-2 506.50 480.00 139.70 8.79 130.91 Pass - Major Risk Plan Sch Z-213 (NL) v6 - Plan Z-213 - Plan #3 Z-2 628.00 605.00 196.20 10.28 185.93 Pass - Major Risk Plan Sch Z-214 (SK) v6 - Plan Z-214 - Plan #2 Z-2 1,192.22 1,200.00 92.79 18.19 74.65 Pass - Major Risk Plan Sch Z-215 (SH) v6 - Plan Z-215 - Plan #2 Z-2 1,247.45 1,265.00 165.63 19.05 146.60 Pass - Major Risk Plan Sch Z-216 (NI) v6 - Plan Z-216 - Plan #2 Z-2 576.94 555.00 230.47 9.66 220.81 Pass - Major Risk Plan Sch Z-217 (NN) v6 - Plan Z-217 - Plan #3 Z-2 408.49 385.00 142.84 7.33 135.51 Pass - Major Risk Plan Sch Z-218 (NE) v6 - Plan Z-218 - Plan #2 Z-2 500.00 480.00 293.65 8.90 284.75 Pass - Major Risk Z-03 - Z-03 - Z-03 4,229.53 4,620.00 754.05 98.38 670.72 Pass - Major Risk Z-03 - Z -03A - Z -03A 4,229.53 4,620.00 754.05 98.37 670.64 Pass - Major Risk Z-103 - Z-103 - Z-103 3,488.59 3,690.00 588.85 60.43 538.96 Pass - Major Risk Z-103 - Z-103PB1 - Z-103PB1 3,488.59 3,690.00 588.85 60.43 538.96 Pass - Major Risk Z-103 - Z-103PB2 - Z-103PB2 3,488.59 3,690.00 588.85 60.43 538.96 Pass - Major Risk Z-113 - Z-113 - Z-113 668.15 655.00 255.81 9.57 246.25 Pass - Major Risk Z-113 - Z-113PB1 - Z-113PBI 668.15 655.00 255.81 9.72 246.09 Pass - Major Risk Z-115 - Z-115 - Z-115 192.89 180.00 266.75 3.21 263.54 Pass - Major Risk Z-16 - Z-16 - Z-16 1,886.85 1,860.00 510.84 46.74 464.51 Pass - Major Risk Z-16 - Z-1 6A- Z-1 6A 1,886.85 1,860.00 510.84 46.74 464.51 Pass - Major Risk Z-17 - Z-17 - Z-17 3,331.80 3,460.00 148.73 80.70 69.67 Pass - Major Risk Z-18 - Z-18 - Z-18 2,304.63 2,345.00 218.41 51.74 168.22 Pass - Major Risk Z-210 - Z-210 - Z-210 1,600.00 2,010.00 885.85 30.48 855.42 Pass - Major Risk Z-34 - Z-34 - Z-34 207.18 200.00 45.57 3.53 42.04 Pass - Major Risk Z-39 - Z-39 - Z-39 5,714.37 5,860.00 372.44 124.54 299.35 Pass - Major Risk Z-39 - Z -39A- Z -39A 5,714.37 5,860.00 372.44 124.68 299.32 Pass - Major Risk Z-40 - Z-40 - Z-40 317.97 305.00 190.18 5.50 184.68 Pass - Major Risk Z-46 - Z-46 - Z-46 627.63 625.00 432.20 10.08 422.20 Pass - Major Risk Z-46 - Z -46A - Z -46A 627.63 625.00 432.20 10.08 422.20 Pass - Major Risk Z-61 - Z-61 - Plan #12d Z-61 Approved 496.24 490.00 281.39 9.03 272.37 Pass - Major Risk Z-61 - Z-61 - Z-61 416.91 410.00 277.99 6.81 271.18 Pass - Major Risk Z-61 - Z-61 PB 1 - Z-61 PB 1 416.91 410.00 277.99 6.96 271.03 Pass - Major Risk Z-65 - Z-65 - Z-65 327.56 315.00 263.89 5.43 258.45 Pass - Major Risk Z-65 - Z-65PB1 - Z-65PB1 327.56 315.00 263.89 5.43 258.45 Pass - Major Risk Z-66 - Z-66 - Plan #19 Z-66 Approved 396.95 395.00 309.88 7.23 302.65 Pass - Major Risk Z-66 - Z-66 - Z-66 46.93 46.63 308.99 0.91 308.08 Pass - Major Risk Z-69 - Z-69 - Z-69 860.08 860.00 201.35 12.80 188.54 Pass - Major Risk 2/21/2013 8:13:50AM Page 3 of 4 COMPASS 5000.1 Build 61 180 Azimuth from North [°] vs Centre to Centre Separation [50 usft/in] 90 Project: Prudhoe Bay Site: PB Z Pad Well: Plan Ivi Z-68 (SP) v6 Wellbore: Plan Z-68 Design: Plan #12c Z-68 v6 From Colour To MD 3200'md (9-5/8") to 9700'md (7'" Scan interal 25 ft 47 500 Scale 1 inch : 50 ft All wells pass major risk 500 1000 1000 1500 1500 2000 2000 3500 0 3500 5000 180 - 5000 7500 - --... 7500 11051 330 150 1.20 V , Q; 300 _. j ..- -- 3660 90 -- 83 5Z, 31•. • 60 05•• . 4. 8'. 3 3' 8 8 31 3 7 .•' 3 `. 32 3 33 0 ..-- 240 120 0 150 180 Azimuth from North [°] vs Centre to Centre Separation [50 usft/in] 90 Azimuth from North [I vs Centre to Centre Separation [100 usft/in] Project: Prudhoe Bay Site: PB Z Pad Well: Plan Ivi Z-68 (SP) v6 Wellbore: Plan Z-68 Design: Plan #12c Z-68 v6 From Colour To MD From 9600'md (T) to TD Scan interal 25 ft 47 — 500 Scale 1 inch : 100 ft All wells pass major risk 500 1000 1000 1500 1500 2000 2000 -- 3500 0 3500 5000 Azimuth from North [I vs Centre to Centre Separation [100 usft/in] 9 ■ 8 ■ 7 ■ 115 108 ■ 4 ■ 3 ■ 2 ■ 1 ■ ■ 33 ■ 32 ■ 31 ■ 30 ■ 29 ■ 21 O ■ 28 ■1102i i?1'6i 1041 114i ■ 103i ■ SPARE -A ■ P -504A ■ P-5048 Z -PAD T�ils PROJECT ` W�PAO VICINITY MAP NTS AS -BUILT WELL CONDUCTORS: 34i, 40, 42, 50, 5% 55, 57, 61, 62, 65, 66, 68, 69, 70, 105, 113, 115, 201, 202, 203, 211i, 212i, 2131, 214i, 2151, 2161, 217i, 218i, SO, SG, SL, NK O ■ 21 LEGEND 39 ■ 210�f A■ ■ 22 AS -BUILT CONDUCTOR •-- 11 ■ WOA Z -PAD WRD PAD EXPANSION AS -BUILT WELL CONDUCTORS -__ 71 ■ 23 EXISTING WELL CONDUCTOR _ 01/os 1 RENAMED CONDUCTORS NK d 42 JJ RFA 12 ■ 7 1 ISSUED FOR INFORMATION iFB JJ NOTES: ■ 24 1. ALASKA STATE PLANE COORDINATES ARE ZONE 4, NAD 27, CONDUCTOR REVISION NOTE 13 ■ ELL: NK AND 42 MONUMENTS MON 2 AND MON 3. ■ 25 3. VERTICAL CONTROL IS BASED ON Z PAD MONUMENTATION. WING FOR CONDUCTOR Z-42 AND Z -NK 14 ■ 7RENAMEDUCTOR ARE AS FOLLOWS: 5. GEODETIC DATUM IS NAD27. ■ 26 ■ SLOT 1m 6. PAD AVERAGE SCALE FACTOR IS 0.999911213. Z-42 7. DATES OF SURVEY: JUNE 28-30, JULY 1-2, 2011. Z-71 1 8. REFERENCE FIELD BOOKS: NS11--44 PGS. 1-75; NS11-46 Z-100 OF 17 ■ ■ 101 °« -- °°"9�1 SURVEYOR'S CERTIFICATE 18 ■ d I HEREBY CERTIFY THAT I AM 46■ Z -PAD �« ° % «« °° •�°°°°°°"""`Y1 PROPERLY REGISTERED AND LICENSED 19 ■ •«, THESTATE OF ALASKA AND TO PC LAND N THAT 20 ■ THIS AS -BUILT REPRESENTS A SURVEY °tee ° °P °�-"`•y 63�} MADE BY ME OR UNDER MY DIRECT 50 6p 511 622 �' �^°° chard° Allison " `'f �v SUPERVISION AND THAT ALL DIMENSIONS AND OTHER DETAILS ARE CORRECT AS OF JULY 02, 2011. 65 57 10 8 SG 215i 6181}%OF�SSIONA�«�PX� 115 K ti t 113 40 240 241 2161 -42 D AS -BUILT WELL CONDUCTORS: 34i, 40, 42, 50, 5% 55, 57, 61, 62, 65, 66, 68, 69, 70, 105, 113, 115, 201, 202, 203, 211i, 212i, 2131, 214i, 2151, 2161, 217i, 218i, SO, SG, SL, NK O DRAWN' BARNHART C. �I:CKED.. JACOBS DATL y` 7l1l11 LEGEND 341 105 203 210�f A■ AS -BUILT CONDUCTOR •-- 68>�- WOA Z -PAD WRD PAD EXPANSION AS -BUILT WELL CONDUCTORS -__ 71 - - -- EXISTING WELL CONDUCTOR _ 01/os 1 RENAMED CONDUCTORS NK d 42 JJ RFA 00 7 1 ISSUED FOR INFORMATION iFB JJ NOTES: rry r v"v"v rr 1. ALASKA STATE PLANE COORDINATES ARE ZONE 4, NAD 27, CONDUCTOR REVISION NOTE 2. HORIZONTAL CONTROL IS BASED ON Z PAD CONTROL ELL: NK AND 42 MONUMENTS MON 2 AND MON 3. DRAWING IS A REISSUE OF A PREVIOUS 3. VERTICAL CONTROL IS BASED ON Z PAD MONUMENTATION. WING FOR CONDUCTOR Z-42 AND Z -NK 4. ELEVATIONS ARE BPX MEAN SEA LEVEL (M.S.L.) DATUM. 7RENAMEDUCTOR ARE AS FOLLOWS: 5. GEODETIC DATUM IS NAD27. NAME NEW COND. NAME 6. PAD AVERAGE SCALE FACTOR IS 0.999911213. Z-42 7. DATES OF SURVEY: JUNE 28-30, JULY 1-2, 2011. Z-71 1 8. REFERENCE FIELD BOOKS: NS11--44 PGS. 1-75; NS11-46 ` PGS 1-9 AS -BUILT WELL CONDUCTORS: 34i, 40, 42, 50, 5% 55, 57, 61, 62, 65, 66, 68, 69, 70, 105, 113, 115, 201, 202, 203, 211i, 212i, 2131, 214i, 2151, 2161, 217i, 218i, SO, SG, SL, NK F. Robert hill g = as$ac DRAWN' BARNHART C. �I:CKED.. JACOBS DATL y` 7l1l11 Aftb„ N - _ •-- DRANING FRBii WOZ 21___ O J0,, NO: ---. - SCALE. 1•• = 200• WOA Z -PAD WRD PAD EXPANSION AS -BUILT WELL CONDUCTORS SHEET: 1 °F 3 - - -- 01_ _ 01/os 1 RENAMED CONDUCTORS NK d 42 JJ RFA 00 7 1 ISSUED FOR INFORMATION iFB JJ No DATE RFMSION D� T AY044Z wwA wu LOCATED WITHIN PROTRACTED SEC. 19, T. 11 N., R. 12 E., UMIAT MERIDIAN, ALASKA WELL A.S.P. PLANT GEODETIC GEODETIC CELLAR SECTION N0. COORDINATES COORDINATES POSITION(DMS) POSITION(D.DD) BOX ELEV. OFFSETS Y= 5,959,100.13 N= 1,179.09 70°17'51.597" 70.2976658° 56'1' 4,292' FSL 341 X= 600,125.84 E= 1,870.12 149°11'20.998" 149.1891661 ° 2,552' FEL Y= 5,959,100.17 N= 1324.00 70'17'51.616" 70.2976711' 4,294' FSL f! 40 — 1 56.0 71 Y=5,959,239.95 N= 1,126.45 70'17'52.965" 70.2980458° 56.0' 4,431' FSL X= 600,178.47 E= 2,009.96 149'11'19.409" 149.1887247° 2,497' FEL 50 X= 599,831.02 E= 1,870.18 149°11'29.591" 149.1915531° 56.2 2,847' FEL Y=5,959,240.04 IX= N= 1,466.46 70°17'53.011" 70.2980586' 55'9 4,435' FSL 12,837' 51 I 599,838.49 E= 2,010.05 149'1 1'29.319" 149.1914775` FEL IY= 5,959,100.12 N= 1,458.95 70'17'51.634" 70.2976761 ° 4,295' FSL 12,832' 55 X= 599,846.00 E= 1,870.11 149°11'29.155" 149.1914319' 56.1' FEL Y=5,959,240.04 N= 1,421.49 70'17'53.005" 70.2980569° 4,435' FSL 57 X= 599,883.46 E= 2,010.05 149°11'28.009" 149.1911136' 55'9 2,792' FEL Y=5,959,239.97 N= 1,376.44 70'17'52.998" 70.2980550' 4,434' FSL 61 X= 599,928.50 E= 2,009.98 149°11'26.695" 149.1907486' 55'9 2,747' FEL IY=5,959,239.94 N= 1,436.45 70°17'53.006" 70.2980572° 4,435' FSL 62 X= 599,868.50 E= 2,009.95 149'11'28.445" 149.1912347' 56.0' 2,807' FEL �Y= 5,959,100.15 N= 1,398.94 70°17'51.626" 70.2976739° 56.1' 4,295' FSL 65 X= 599,906.01 E= 1,870.14 149°11'27.405" 149.1909458' 2,772' FEL IY= 5,959,100.11 N= 1,443.99 70'17'51.632" 70.2976756° 56.2' 4,295' FSL 66 X= 599,860.96 E= 1,870.11 149°11'28.719" 149.1913108° 2,817' FEL 55'9 N= 1,134.00 70°17'51.592" 149°11'20.554" 149.1890428' 2,537' FEL 68 Y=5,959,239.90 N= 1,346.45 70'17'52.994" 70.2980539' 4,434' FSL 113 X= 599,958.49 E= 2,009.91 149°11'25.821" 149.1905058° 56.0' 2,717' FEL 56.1' Y=5,959,240.03 N= 1,361.38 70°17'52.997 70.2980547° 55.9' 4,434' FSL 115 X= 599,943.56 E= 2,010.04 149"11'26.256" 149.1906267' 2,732' FEL WELL A.S.P. PLANT GEODETIC GEODETIC CELLAR SECTION N0. COORDINATES COORDINATES POSITION(DMS) POSITION(D.DD) BOX ELEV. OFFSETS Y= 5,959,100.13 N= 1,179.09 70°17'51.597" 70.2976658° 56'1' 4,292' FSL 341 X= 600,125.84 E= 1,870.12 149°11'20.998" 149.1891661 ° 2,552' FEL Y= 5,959,100.17 N= 1324.00 70'17'51.616" 70.2976711' 4,294' FSL f! 40 — 1 56.0 71 Y=5,959,239.95 N= 1,126.45 70'17'52.965" 70.2980458° 56.0' 4,431' FSL X= 600,178.47 E= 2,009.96 149'11'19.409" 149.1887247° 2,497' FEL 50 X= 599,831.02 E= 1,870.18 149°11'29.591" 149.1915531° 56.2 2,847' FEL Y=5,959,240.04 IX= N= 1,466.46 70°17'53.011" 70.2980586' 55'9 4,435' FSL 12,837' 51 I 599,838.49 E= 2,010.05 149'1 1'29.319" 149.1914775` FEL IY= 5,959,100.12 N= 1,458.95 70'17'51.634" 70.2976761 ° 4,295' FSL 12,832' 55 X= 599,846.00 E= 1,870.11 149°11'29.155" 149.1914319' 56.1' FEL Y=5,959,240.04 N= 1,421.49 70'17'53.005" 70.2980569° 4,435' FSL 57 X= 599,883.46 E= 2,010.05 149°11'28.009" 149.1911136' 55'9 2,792' FEL Y=5,959,239.97 N= 1,376.44 70'17'52.998" 70.2980550' 4,434' FSL 61 X= 599,928.50 E= 2,009.98 149°11'26.695" 149.1907486' 55'9 2,747' FEL IY=5,959,239.94 N= 1,436.45 70°17'53.006" 70.2980572° 4,435' FSL 62 X= 599,868.50 E= 2,009.95 149'11'28.445" 149.1912347' 56.0' 2,807' FEL �Y= 5,959,100.15 N= 1,398.94 70°17'51.626" 70.2976739° 56.1' 4,295' FSL 65 X= 599,906.01 E= 1,870.14 149°11'27.405" 149.1909458' 2,772' FEL IY= 5,959,100.11 N= 1,443.99 70'17'51.632" 70.2976756° 56.2' 4,295' FSL 66 X= 599,860.96 E= 1,870.11 149°11'28.719" 149.1913108° 2,817' FEL IY=5,959,100.23 N= 1,134.00 70°17'51.592" 70.2976644° 55'9 4,291' FSL 68 X= 600,170.92 E= 1,870.22 149'11'19.683" 149.1888008' 2,507' FEL IY=5,959,239.94 N= 1,301.49 7D°17'52.988" 70.2980522° 56.1' 4,433' FSL 69 X= 600,003.45 E= 2,009.95 149'11'24.511" 149.1901419' 2,672' FEL IY= 5,959,100.10 N= 1,384.02 70°17'51.624" 70.2976733° 56.2' 4,294' FSL 70 X= 599,920.93 E= 1,870.09 149°11'26.971" 149.1908253° 2,757' FEL Y=5,959,100.05 N= 1-163.88 70'17'51.594" —70:2976650° - t 4,291' FSL 105 X= 600,141.04 E= 1,870.04 NOTES: 1. ALASKA STATE PLANE COORDINATES ARE NAD27, ZONE 4. 2. HORIZONTAL CONTROL IS BASED ON Z PAD CONTROL MONUMENTS MON 2 AND MON 3. 3. VERTICAL CONTROL IS BASED ON Z PAD MONUMENTATION. 4. ELEVATIONS ARE BPX MEAN SEA LEVEL (M.S.L.) DATUM. 5. PAD AVERAGE SCALE FACTOR IS 0.9 99 911 21 3. AS -BUILT WELL CONDUCTORS: 34i, 40, 42, 50, 51i, 55, 57, 61, 62, 65, 66, 68, 69, 70, 105, 113, 115, 201, 202, 203, 211i, 212i, 2131, 2141, 2151, 216i, 217i, 218i, SO, SG, SL, NK -_ _sDiECKED F. I�QbCfL DRAWN BARNHART p — ' — - — - _ �L �� g C NG URAWINC_- FRe11 w0z 21 .,03 fvU'. WOA Z PAD =IIF D1 , , aZ RENAMED 9 2 rD 11_ _ ars a��O . SCAIF - WRD PAD EXPANSION 2 3 QO 7 7 1 ISSUED FOR INFORMATION iFH �� K °" 1" = zoa' AS—BUILT WELL CONDUCTORS of NO DATE fSr V15iCN RY CNif LOCATED WITHIN PROTRACTED SEC, 19, T. 11 N., R. 12 E., UMIAT MERIDIAN, ALASKA WELL A.S.P. PLANT GEODETIC GEODETIC GRAVEL SECTION NO. COORDINATES COORDINATES POSITION(DMS) POSITION(D.DD) PAD ELEV. OFFSETS 201 Y=5,959,240.18 N= 1,171.46 70'17'52.973" 70.2980481° 56.6' 4,432' FSL X= 600,133.47 E= 2,010.19 149'11'20.721" 149.1890892' 2,542' FEL 202 Y=5,959,239.94 N= 1,451.46 70'17'53.008" 70.2980578° 55.9' 4,435' FSL X= 599,853.49 E= 2,009.95 149'11'28.882", 149.1913561° 2822' FEL 203 Y=5,959,100.03 N= 1,148.96 70°17'51.592 70.2976644' 56.0' 4,291' FSL X= 600,155.96 E= 1,870.02 149°11'20.119" 149.1889219' 2,522' FEL 2111 Y=5,959,100.23 N= 1,308.95 70'17'51.615" 70.2976708' 55 9' 4,293' FSL X= 599,995.99 E= 1,870.22 149'11'24.783" 149.1902175' 2,682' FEL 2121 Y= 5,959,240.11 N= 1,141.47 70'17'52.969" 70.2980469' 56.4' 4,431' FSL X= 600,163.45 E= 2,010.12 149'11'19.847" 149.1888464' 2,512' FEL 2131 Y=5,959,240.04 N= 1,271.44 70'17'52.985" 70.2980514' 56.1' 4,433' FSL X= 600,033.50 E= 2,010.05 149°11'23.635" 149.1898986' 2,642' FEL 2141 Y=5,959,100.25 N= 1,293.88 70°17'51.613" 70.2976703' 56.2' 4,293' FSL. X= 600,011.06 E= 1,870.24 149'11'24.343" 149.1900953' 2,667' FEL 2151 Y= 5,959,100.14 N= 1,354.05 70°17'51.620" 70.2976722° 56.2' 4,294' FSL X= 599,950.89 E= 1 870.13 149'11'26.097" 149.1905825' 2,727' FEL 2161 Y=5,959,240.09 N= 1,316.42 70'17'52.992" 70.2980533' 56'0 4,433' FSL X= 599,988.52 E= 2,010.10 149°11'24.946" 149,1902628° 2,687' FEL 2171 Y=5,959,239.98 N= 1,156.36 70°17'52.970" 70.2980472' 56'2' 4,431' FSL X= 600,148.56 E= 2,009.99 149°11'20.281" 149.1889669° 2,527' FEL 2181 Y=5,959,239.98 N= 1,391.46 70'17'53.000" 70.2980556° 55'9 4,434' FSL X= 599,913.48 E= 2,009.99 149°11'27.133" 149.1908703' 2,762' FEL SD Y= 5,959,100.11 N= 1,429.03 70'17'51.630" 70.2976750' 56.4' 4,295' FSL X= 599,875.92 E= 1 870.10 149'11'28.283" 149.1911897' 2,802' FEL S� Y= 5,959,100.09 N= 1,369.02 70°17'51.621" 70.2976725° 56.2' 4,294' FSL X= 599,935.92 E= 1 870.08 149'11'26.533" 149.1907036° 2,742' FEL SL Y= 5,959,100.01 N= 1,279.00 70'17'51.609 70.293' 2976692' 56.3' 4, FSL _ 4 E= 1 87 .00 '" 149°112 .910 1 9.899750° 2,652' FEL 42 Y=-5,959,23985 - N= 1286.54 - -- 7017'52:985" 70,2980514° 56.0' 4,433' FSL X= 600,018.40 E= 2,009.86 149'11'24.075" 149.1900208" 2,657' FEL NOTES: 1. ALASKA STATE PLANE COORDINATES ARE NAD27, ZONE 4. 2. HORIZONTAL CONTROL IS BASED ON Z PAD CONTROL MONUMENTS MON 2 AND MON 3. 3. VERTICAL CONTROL IS BASED ON Z PAD MONUMENTATION: 4. ELEVATIONS ARE BPX MEAN SEA LEVEL (M.S.L.) DATUM. 5. PAD AVERAGE SCALE FACTOR IS 0.999911213. 6, ALPHA NAME DESIGNATIONS REFER TO BPX DRILLING SURFACE SLOT NAME AS -BUILT WELL CONDUCTORS: 34i, 40, 42, 50, 51i, 55, 57, 61, 62, 65, 66, 68, 69, 70, 105, 113, 115, 201, 202, 203, 211i, 2121, 2131, 214i, 2151, 2161, 2171, 218i, SD, SG, SL, NK DRAWN __ _. F. IZOE7hellC t'I, B8S ARNHART �+ cNFD JAC0 - OBS 40 bp Nr{AN1N(a _ FRBti woz_ ai,--- WOA Z—PAD 'e /`�n` purl Na- Ot 1/05,(13 RENAMED WELL NK TO WELL 42 - JJ RCA i assecs WRD PAD EXPANSION OD 7/1 7 ,SSM FM INFORMATION JJ LAIC: _ _ 1„ = 200 AS—BUILT WELL CONDUCTORS 3 of 3 NO DAIi. EEVISION Or O'n x..x• wiss Well House removed with this configuration ' Z' Pad 15t. Well TOP OF ROTARY TABLE BOTTOM OF ROTARY BEAM E`.... 464']{GERP.QV, TAPE) CHOKE UNE: 3-1/8' 5M FLANGED MANUAL GATE VALVE — 3-1/8' 5M FLANGED HYDRAULIC GATE VALVE 3-1/8' 5M FLEX HOSE CA WELL . . CELLAR DECK PLATiORIF ! 2r -11y2- I( IE! Ali 1 t tl; 11t 2r -L. -1k i �I Flt :14 FPS CULA9 1L? irI FI( f1f aed Tarr i 1 1 1 t (i• r I1 !�� ili 111 � I ,�, 11t til 1 ° iti lit 111 11 111 a-57JV' I 11i lli i.l.:. 6' Nhr•as �_1p 4' ( NIPPLE UP; SPACER SPOOL 13 5/8' 5M FLANGE TOP 13 5/8' SM FLANGED BOTTOM CELLAR AND WELL HEAD CONFIGURATION SPACER SPOOL ARE FOR REFERENCE ONLY k ARE �--2'-D' -- 13 5/8' 5M FLANGE TOP DEPENDENT ON OPERATOR'S REQUIREMENTS 13 5/8' SM FLANGED BOTTOM DOUBLE STUDDED ADAPTER 13 5/8' 5M FLANGED TOP 11' 5M FLANGED BOTTOM CASING SPOOL ASSEMBLY 11' 5MFLANGED TOP 11' 5M FLANGED BOTTOM CASING HEAD ASSEMBLY it' SM FLANGED TOP CONFIDENTIAL AND PROPRIETARY Nola NM` _ 111MIKINS Thil dacaeml IM the ht—loc and lett conlWnad rdn a. Ne propHy a( Porker TachMopA hc. and ore awlnleloed In cmatwv N Par T.aaran, — —"' ""toted c """' III, theeR...p1 M MA melatte"i aa klampb" old dote rmtohad ---_•••• hate ee..WM.a EM aw ...M al the i.r m or ""y -W, M/10/12 REVSED CEI FLOOR DIMENSOM ah thIe do—el to Nt.a .ant. -OA—R.c.IPI « P—e. of Ihle domaad don nM cmv.) my Ikau. a rlRht l" OS/1J/12 4PGlgp FEE MgE[.WD AGW:C pNCN U W-1. « b mmulacba, ux, a .MI, b vMl. « h p«E any oa/a/11 GENEML REVISION dl!Wht, « u<or artIcla dol t1A4 d oo a m,Eol the WI inatba or 12/)/00 RflASM NECM BOP ON ntl CENTM d.b cmlohed here ailhaul .Pn "'1'" auOtaYaRm of Paha lechndugy, Inc. M eVletly labldden. 10/OR/OR OEi&AAL Rfl"RION "/2P/"R REtE+da FOR RMP" BELL NIPPLE: 16' DIA UPPER, 18' CIA LOWER 3" CASING FILL OUTLET (CITY OF 2) 13 5/8' 5M BOTTOM LITE FLANGE 16' KEMPER SEAL -O -GRIP (1 EA.) 3' DIA, STD. OUTLET (1 EA.) 2' DIA. STD. OUTLET DUTCH LOCK DOWN FLANGE ANNULAR BOP: SHAFFER LXT 13 13-5/8' SM STUDDED TOP 13-5/8" 5M FLANGED BOTTOM RAM TYPE BOP: SHAFFER LXT DOUBLE BOP 13 5/8'-5M 13 5/0'-5M STUDDED TOP 1,3 5/8'-5M FLANGED BOTTOM It 14' PSLK W/BSTR OPERATOR, UPPER CAVITY AND (2) 14' UL2 OPERATOR, LOWER CAVITY DRILLING CROSS: 13 5/8'-5M FLANGED TOP 13 5/8'-5M FLANGED BOTTOM W (2) 3 1/3'-5M SIDE OUTLETS KILL UNE: 2-1/16' 5M FLEX HOSE 2-1/16' SM X 3-1/B' SM DS.A. 3-1/0' SM FLANGED MANUAL CATE VALVE 5M FLANGED HYDRAULIC GATE VALVE RAM TYPE BOP: SHAFFER LXT SINGLE 13 5/0' 5M 13 5/8' -SM STUDDED TOP 13 S/B'- 5M FLANGED BOTTOM W/(2) 14' UL2 OPERATOR PARKERTECHNOLOST, INC. AADU RIG 273 ffi 13 5/8" 5M SHAFFER BOP STACK J� NIPPLE UP ON 7 5/B' CASING IN. attAaV.IO 114 S)Jt-at-OS-9"] r� SHFR 1 eF 1 TT ill -o' 4 1/16-5000 (R-39> MONITOR PORT TEST PORT 10 LOCKDOWN SCREWS SCSSV EXIT- -'-11-5000 (R-54) Ea I 1/16-5000 MOD 120 GV 2 1/16-5000 MOO 120 Gv--j f TEST PORT 10 LOCKDOWN SCREWS it -5000 CR -54) f-. 51,f � "--2 1/16-5000 MOD 120 CV TEST PORT 111H I iliff, F --TEST PORT II 20' 00 CASING 00 CASING 7. 00 CASING co "�-4 1/2. OD TUBING 0--) FF K F L (D M A -T 0 (0 H Cz% L,4Q 8 Kz% D 0 H C - co PROPOSAL -02-5037 FIA986 REF:0012DNIIO74013:�i 00000M 1022404. I, Do Q, sc.E --. aa—.c ULTRA -SL WHOLE DI -C -S -WS -X " 'FXWS C) PRODUCERS OR INJEC70RS ,,,x cww.011 .030 WELLHEAD SYSTEM 0 T= Owc- TO VC&STO-25 XXX-I.OM I TO COWOft 10 AP1 H-5000 x 4 T '/16-5000 T. - ?r, Y CS/ Y 7 Y Z:/, 00;210MI080698 TRANSMITTAL LETTER CHECKLIST WELL NAME: PTD: Development _ Service _ Exploratory _ Stratigraphic Test _ Non -Conventional FIELD: �'`�`�" POOL: Check Box for Appropriate Letter / Paragraphs to be Included in Transmittal Letter CHECK OPTIONS TEXT FOR APPROVAL LETTER MULTI The permit is for a new wellbore segment of existing well Permit LATERAL No. , API No. 50- - - - function (If last two digits Production should continue to be reported as a of the original in API number are API number stated above. between 60-69 In accordance with 20 AAC 25.005(f), all records, data and logs acquired for the pilot hole must be clearly differentiated in both well Pilot Hole name ( PH) and API number (50- - - -) from records, data and logs acquired for well. The permit is approved subject to full compliance with 20 AAC 25.055. Approval to produce / inject is contingent upon issuance of a Spacing Exception conservation order approving a spacing exception. (Company Name) Operator assumes the liability of any protest to the spacing exception that may occur. All dry ditch sample sets submitted to the Commission must be in no greater than 30' sample intervals from below the permafrost or from Dry Ditch Sample where samples are first caught and 10 sample intervals through target zones. Please note the following special condition of this permit: production or production testing of coal bed methane is not allowed for (name of well) until after (Company Name) has designed and Non -Conventional implemented a water well testing program to provide baseline data on Well water quality and quantity. (Company Name) must contact the Commission to obtain advance approval of such water well testing program. Regulation 20 AAC 25.071(a) authorizes the AOGCC to specify types of well logs to be run. In addition to the well logging program proposed by (Company Name) in the attached application, the following well logs are also required for this well: Well Logging Requirements Per Statute AS 31.05.030(d)(2)(B) and Regulation 20 AAC 25.071, composite curves for well logs run must be submitted to the AOGCC within 90 days after completion, suspension or abandonment of this well. Revised 5/2013 WELL PERMIT CHECKLIST Field & Pool PRUDHOE BAY, PRUDHOE OIL - 640150 Well Name: PRUDHOE BAY UNIT Z-68 Program DEV Well bore seg ❑ PTD#:2130930 Company BP EXPLORATION (ALASKA) INC- Initial Class/Type DEV/PEND -_GeoArea 890_ Unit 11650 On/Off Shore On Annular Disposal ❑ Administration 1 Permit fee attached NA 2 Lease number appropriate Yes Entire well in ADL 028262. 3 Unique well name and number Yes Geologic 4 Well located in defined -pool Yes PRUDHOE BAY, PRUDHOE OIL POOL - 64015, governed by CO 341D Date: 7l )7, )� 5 Well located proper distance from drilling unit boundary Yes CO 341 D, Rule 2: There shall be no restrictions as to well spacing except that no pay shall be 6 Well located proper distance from other wells Yes opened in a well closer than 500 feet to the boundary of the affected area. 7 Sufficient acreage available in drilling unit Yes 8 If deviated, is wellbore plat included Yes 9 Operator only affected party Yes 10 Operator has appropriate bond in force Yes 11 Permit can be issued without conservation order Yes Appr Date 12 Permit can be issued without administrative approval Yes 13 Can permit be approved before 15 -day wait Yes SFD 7/1/2013 14 Well located within area and strata authorized by Injection Order # (put 10# in comments) (For NA 15 All wells within 1/4 mile area of review identified (For service well only) NA 16 Pre -produced injector: duration of pre -production less than 3 months (For service well only) NA 17 Nonconven. gas conforms to AS31.05.0300.1.A),0.2.A-D) NA 18 Conductor string provided Yes 20" conductor -set _at 80 ft. Will be cemented. Engineering 19 Surface casing protects all known USDWs NA No Aquifers in area. North slope - - 20 CMT vol adequate to circulate on conductor & surf _csg Yes 9 5/8" surface casing will be fully cemented. Stage collar for contingency. 21 CMT vol adequate to tie-in Jong string to surf csg No Intermediate casing will be cemented back to 3900 ft. _( surf casing at 3290 ft. ) 22 CMT -will cover all known productive horizons Yes Slotted linerwith swell_packers-overproduction zone_( horizontal) 23 Casing designs adequate for C, T, B & permafrost Yes 24 Adequate tankage or reserve pit - - Yes Rig has steel pits... all waste to approved disposal wells. 25 If_a re -drill, has a 1.0-403 for abandonment been approved NA 26 Adequate wellbore separation proposed Yes proximity analysis performed._ No issues. 27 If.diverter required, does it meet regulations Yes Parker 273 has 16"_diverter..._ well sketch provided._ Using 18.7 deg targeted angle. 28 Drilling fluid_ program schematic-& equip list adequate Yes Max formation press= 3657 psi_ '( 8.2-ppg EMW).- ) will drill with 8.5-1-1ppm mud. Sag has 10+ ppg possibl_ Appr Date GLS 7/17/2013 '29 BOPEs,_do they meet regulation Yes 13 5/8" 5000psi.BOPE. _ 3 rams and 1 annular (blind/shear) I30 BOPE press rating appropriate; test to -(put psig in comments)_ Yes - MASP =2799 psi will test BOP_ to 3500 -psi - 31 Choke_ manifold complies w/API_ RP -53 (May 84)_ Yes 32 Work will occur without operation_ shutdown Yes . - 33 Is presence_ of H2S gas probable Yes H2S expected ... _Rig has sensors and alarms. 34 Mechanical -condition of wells within AOR verified (For_ service well only) - - - NA_ - - _ - - - - - - - - - - - - - 35 Permit can be issued w/o. hydrogen_ Sulfide measures No Z -Pad wells are-H2S-bearing. H2S measures are required Geology I36 _D -ata -presented on potential overpressure zones _ Yes Interval_from_ CM1_ to top_$ag R. expected 10.0-10.2 ppg_EMW; will be drilled with 10.2-11.0ppg mud. 37 Seismic_ analysis of shallow gas Yes _ Productive interval expected to_be 8.2_ppg EMW; will -be drilled with 8.5- 8.8ppg mud. Appr Date _zones SFD 7/1/2013 38 Seabed condition survey-(ifoff_-shore) Yes 39 Contact name/phone for weekly_ progress reports_ [exploratory only] Yes _ _ - - - - - - - - - - - - - Geologic Engineering Public Grassroots well using Parker 273. Target is Ivisak zone 4... using slotted liner with swell packers. GIs. Commissioner: MIT Date: 7l )7, )� Commissioner: Date ca�� Com i r Date ���-�
