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Home My WebLink About215-175 Post Office Box 244027 Anchorage, AK 99524-4027 3800 Centerpoint Drive Suite 1400 Anchorage, AK 99503 Phone: (907) 564-4891 06/01/2023 Mr. Mel Rixse Alaska Oil and Gas Conservation Commission 333 West 7th Avenue, Suite 100 Anchorage, Alaska 99501 Re: Prudhoe Bay Surface Casing by Conductor Annulus Top-offs of Cement, Corrosion Inhibitor through 6/1/2023. Dear Mr. Rixse, Enclosed please find a copy of a spreadsheet with a list of Prudhoe Bay wells that were topped-off with cement, corrosion inhibitor in the surface casing by conductor annulus through 6/1/2023. Cement top-offs are executed as needed to mitigate the void space left at surface by minor cement fallback during the primary surface casing by conductor cement job. The remaining void space between the top of the cement and the top of the conductor is filled with a heavier than water corrosion inhibitor to reduce the risk of external surface casing corrosion. The attached spreadsheets include the well names, API and PTD numbers, treatment dates and volumes. As per previous agreement with the AOGCC, this letter and spreadsheet serve as notification that the treatments took place and meet the requirements of form 10-404 Report of Sundry Operations. If you have any additional questions, please contact me at 564-4891 or oliver.sternicki@hilcorp.com. Sincerely, Oliver Sternicki Well Integrity Supervisor Hilcorp North Slope, LLC Hilcorp North Slope LLC.Surface Casing by Conductor Annulus Cement, Corrosion Inhibitor Top-offReport of Sundry Operations (10-404)06/01/2023Well NamePTD #API #Initial top of cement (ft)Vol. of cement pumped (gal)Final top of cement (ft)Cement top off date Corrosion inhibitor (gal)Corrosion inhibitor/ sealant dateL-2072210815002923702003.371.31/23/2023123/1/2023L-2312230105002923746003.003.0-393/27/2023M-111810575002920589002.602.6-105/29/2023M-311920325002922256001.501.5-165/29/2023M-331941165002922504001.301.3-145/29/2023N-171830095002920898001.201.2-115/30/2023N-18A2081755002920906010.500.5-65/30/2023N-21A1961965002921342011.001.0-85/30/2023N-272071045002923365000.500.5-45/30/2023N-292141105002923521002.302.3-245/30/2023N-31215175500292356000-0--205/30/2023V-2342220045002923707006.3210.91/23/2023243/1/2023W-2412221545002923741002.502.5-263/1/2023Z-121891025002921977000.700.7-45/23/2023Z-34212061500292346900-0--155/27/2023Z-402111735002923462000.700.7-65/27/2023Z-46A2052035002923280010.500.5-35/23/2023Z-502120015002923463000.500.5-35/27/2023Z-662121955002923482000.700.7-85/27/2023Z-116211124500292345500-0--175/27/2023Z-210204181500292322600-0--125/27/2023Z-2292221045002923726003.8361.23/5/2023363/27/2023-0--5/30/2023N-3121517550029235600020 7. Property Designation (Lease Number): 1. Operations Performed: 2. Operator Name: 3. Address: 4. Well Class Before Work:5. Permit to Drill Number: 6. API Number: 8. Well Name and Number: 9. Logs (List logs and submit electronic data per 20AAC25.071): 10. Field/Pool(s): Susp Well Insp Install Whipstock Mod Artificial Lift Perforate New Pool Perforate Plug Perforations Coiled Tubing Ops Other Stimulate Fracture Stimulate Alter Casing Pull Tubing Repair Well Other: Change Approved Program Operations shutdown 11. Present Well Condition Summary: Casing Length Size MD TVD Burst Collapse Exploratory Stratigraphic Development Service 14. Attachments (required per 20 AAC 25.070, 25.071, & 25.283) 16. Well Status after work: 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. OIL GAS WINJ WAG GINJ WDSPL GSTOR Suspended SPLUG Authorized Name and Digital Signature with Date: Authorized Title: Contact Name: Contact Email: Contact Phone: PBU N-31 Hilcorp North Slope, LLC 3800 Centerpoint Dr, Suite 1400, Anchorage, AK 99503 215-175 50-029-23560-00-00 13502 Conductor Surface Intermediate Production Liner 9052 128 3216 9300 4331 13020 20" 9-5/8" 7" 4-1/2" 9051 48 - 176 46 - 3262 45 - 9345 9169 - 13500 48 - 176 46 - 3112 45 - 8568 8414 - 9052 13395 3090 5410 7500 13020 5750 7240 8430 9358 - 13388 4-1/2" 12.6# 13cr85 43 - 9174 8579 - 9048 Structural 4-1/2" HES TNT Packer 9053, 8314 9053 8314 Torin Roschinger Area Operations Manager Josh Stephens Josh.Stephens@hilcorp.com 970.779.1200 PRUDHOE BAY, PRUDHOE OIL Total Depth Effective Depth measured true vertical feet feet feet feet measured true vertical measured measured feet feet feet feet measured true vertical Plugs Junk Packer Measured depth True Vertical depth feet feet Perforation depth Tubing (size, grade, measured and true vertical depth) Packers and SSSV (type, measured and true vertical depth) 12. Stimulation or cement squeeze summary: Intervals treated (measured): Treatment descriptions including volumes used and final pressure: 13a.Representative Daily Average Production or Injection Data Oil -Bbl Gas-Mcf Water -Bbl Casing Pressure Tubing Pressure Prior to well operation: Subsequent to operation: 15. Well Class after work: Exploratory Development Service StratigraphicDaily Report of Well Operations Copies of Logs and Surveys Run Electronic Fracture Stimulation Data Sundry Number or N/A if C.O. Exempt: ADL 0028281, 0028282, 0028284 43 - 8419 N/A N/A 754 Well Not Online 49549 279 1800 650 1320 800 N/A 13b. Pools active after work:PRUDHOE OIL No SSSV Installed STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS Sr Pet Eng: Sr Pet Geo: Form 10-404 Revised 10/2022 Submit in PDF format to aogcc.permitting@alaska.gov Sr Res Eng: Due Within 30 days of Operations By Kayla Junke at 3:44 pm, Apr 17, 2023 Digitally signed by Torin Roschinger (4662) DN: cn=Torin Roschinger (4662), ou=Users Date: 2023.04.13 18:35:22 -08'00' Torin Roschinger (4662) DSR-4/17/23 RBDMS JSB 042023 WCB 11-28-2023 ACTIVITY DATE SUMMARY 4/10/2023 CTU #6 1.75" CT 0.145" Job Scope: Set CIBP for gas shut-off MIRU. ***Job In Progress*** 4/10/2023 T/I/O = 1410/1800/340. Temp = 134°. Bleed IAP (CT request). ALP = 1960 psi, SI @ CV. IA FL @ 8503' (sta # 2 DMY). Bled IAP to OT to 710 psi in 30 min. OAP decre100 psi. Monitored for 30 min. IAP & IA FL unchanged, OAP decreased 100 psi. Final WHPs = 1410/710/140. SV = C. WV, SSV, MV = O. IA, OA = OTG. 22:00 4/11/2023 CTU #6 1.75" CT 0.145" Job Scope: Set CIBP for gas shut-off Perform weekly BOP test. R/U and freeze protect the flowline. MU 2.90" HES GR/CCL logging tools with 3.65" DJN. L&K the well with 200 BBL's of seawater & safelube, 10 bbl diesel cap. RIH and log from 13100' to 8900' at 50 FPM. Paint yellow flag at 12999.9' E / 12999.99' HES / 13008' M. POOH. Download data and confirm depth correction with OE (+32'). MU NS CIBP and RIH. Set 4.5" CIBP at 13,020'. POOH. ***Job In Progress*** 4/12/2023 CTU #6 1.75" CT 0.145" Job Scope: Set CIBP for gas shut-off POOH after setting 4.5" CIBP at 13,020'. FP well to 2500'. RDMO. ***Job Complete*** Daily Report of Well Operations PBU N-31 CTU #6 1.75" CT 0.145" Job Scope: Set CIBP for gas shut-off MU NS CIBP and RIH.Set 4.5" CIBP at 13,020'. POOH. The CIBP is shown correctly in the new WBS, below. -WCB 7. Property Designation (Lease Number): 1. Operations Performed: 2. Operator Name: 3. Address: 4. Well Class Before Work:5. Permit to Drill Number: 6. API Number: 8. Well Name and Number: 9. Logs (List logs and submit electronic data per 20AAC25.071): 10. Field/Pool(s): Susp Well Insp Install Whipstock Mod Artificial Lift Perforate New Pool Perforate Plug Perforations Coiled Tubing Ops Other Stimulate Fracture Stimulate Alter Casing Pull Tubing Repair Well Other: Change Approved Program Operations shutdown 11. Present Well Condition Summary: Casing Length Size MD TVD Burst Collapse Exploratory Stratigraphic Development Service 14. Attachments (required per 20 AAC 25.070, 25.071, & 25.283) 16. Well Status after work: 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. OIL GAS WINJ WAG GINJ WDSPL GSTOR Suspended SPLUG Authorized Name and Digital Signature with Date: Authorized Title: Contact Name: Contact Email: Contact Phone: PBU N-31 Mill CIBP Hilcorp North Slope, LLC 3800 Centerpoint Dr, Suite 1400, Anchorage, AK 99503 215-175 50-029-23560-00-00 13502 Conductor Surface Intermediate Production Liner 9052 128 3216 9300 4331 13410 20" 9-5/8" 7" 4-1/2" 9048 48 - 176 46 - 3262 45 - 9345 9169 - 13500 48 - 176 46 - 3112 45 - 8568 8414 - 9052 13395 3090 5410 7500 None 5750 7240 8430 9358 - 13388 4-1/2" 12.6# 13cr85 43 - 9174 8579 - 9048 Structural 4-1/2" HES TNT Packer 9053, 8314 9053 8314 Stan Golis Sr. Area Operations Manager Josh Stephens Josh.Stephens@hilcorp.com 970.779.1200 PRUDHOE BAY, PRUDHOE OIL Total Depth Effective Depth measured true vertical feet feet feet feet measured true vertical measured measured feet feet feet feet measured true vertical Plugs Junk Packer Measured depth True Vertical depth feet feet Perforation depth Tubing (size, grade, measured and true vertical depth) Packers and SSSV (type, measured and true vertical depth) 12. Stimulation or cement squeeze summary: Intervals treated (measured): Treatment descriptions including volumes used and final pressure: 13a.Representative Daily Average Production or Injection Data Oil -Bbl Gas-Mcf Water -Bbl Casing Pressure Tubing Pressure Prior to well operation: Subsequent to operation: 15. Well Class after work: Exploratory Development Service StratigraphicDaily Report of Well Operations Copies of Logs and Surveys Run Electronic Fracture Stimulation Data Sundry Number or N/A if C.O. Exempt: ADL 0028281, 0028282, 0028284 43 - 8419 N/A N/A 43 2010 3609 21337 40 1152 688 1550 160 1040 N/A 13b. Pools active after work:PRUDHOE OIL No SSSV Installed STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS Sr Pet Eng: Sr Pet Geo: Form 10-404 Revised 10/2022 Submit in PDF format to aogcc.permitting@alaska.gov Sr Res Eng: Due Within 30 days of Operations By Samantha Carlisle at 10:32 am, Feb 27, 2023 Digitally signed by Stan Golis (880) DN: cn=Stan Golis (880), ou=Users Date: 2023.02.24 18:13:02 -09'00' Stan Golis (880) RBDMS JSB 030223 MGR03FEB2023 DSR-2/27/23 N/A PBU N-31 PRUDHOE BAY, PRUDHOE OIL 215-175 Mill CIBP Sundry Number ACTIVITY DATE SUMMARY 2/16/2023 CTU#9 1.75" Coil Tubing (0.156 wall) Job Scope: Mill CIBP & push to Btm Road CTU 9 from Milne Point. *** Continue on WSR 2/17/23 *** 2/17/2023 CTU#9 1.75" Coil Tubing (0.156 wall) Job Scope: Mill CIBP & push to Btm MIRU CTU#9. MU BOT 3.70" Junk milling BHA. Load well with SL, RIH. Issues with CTU pump, replace valve seat, test and PT. RIH while displacing CT over to water. Tag at 11150, rotate motor through and dry tag again 11158. Having more issues with pump. After diagnosing, POOH to repair. *** Continue on WSR 2/18/23 *** 2/18/2023 CTU#9 1.75" Coil Tubing (0.156 wall) Job Scope: Mill CIBP & push to Btm MU BOT ctc & 3.70" junk mill assembly. RIH. Tag at ~10,200. Load well with safelube and RIH to dry tag again @ 11162. Start milling making slow progress avg 2 fpm. Issues getting fluids ¿ wait on fluids to keep milling. Mill down to 11,895' (2 stalls RIH 0.2 thru 1.8 fpm). Wiper Trip up to 9600' Clean. RIH milling again @ 11,895' clean. 10 fpm. Tag CIBP @ 12,463.4 CTM/ 12,554 Mech (20' corr to 12,483;). After 20 min lost WP. PUH FP surf lines and cap well 5 bbls w/ 60/40 meth. *** Continue on WSR 2/19/23 *** 2/19/2023 CTU#9 1.75" Coil Tubing (0.156 wall) Job Scope: Mill CIBP & push to Btm Milling CIBP @ 12,485' MD. RIH to mill and just spinning. Worked where got CIBP to start moving. Dry drift, then hung up in perfs. Milled thru 40' of perfs. RIH dry to 13,375' CTM / 13,395' md. POOH. 12,900' CTM pulled heavy. Pumped to work thru and POOH. FP CT and Well. RDMO CTU #9 *** Job Complete *** Daily Report of Well Operations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y Anne Prysunka at 3:53 pm, Nov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perator Name:2. Exploratory Development Service 5 Permit to Drill Number:215-175 6.API Number:50-029-23560-00-00 PRUDHOE BAY, PRUDHOE OIL Hilcorp North Slope, LLC 5. Field/Pools:9. Well Name and Number: ADL 0028281, 0028282 Property Designation (Lease Number):10. 341H 8. PBU N-31 7.If perforating: What Regulation or Conservation Order governs well spacing in this pool? Will planned perforations require a spacing exception? Stratigraphic Current Well Class:4. Type of Request:1.Abandon Plug Perforations Fracture Stimulate Repair Well Operations shutdown Extended Perf w CTU Op Shutdown GAS GSTORWAG SPLUG Abandoned Oil 5 WINJ Exploratory Development 5StratigraphicService WDSPL 12. Attachments: PRESENT WELL CONDITION SUMMARY 13502 Effective Depth MD: 13cr85 11. 5/21/2021 Commission Representative: 15. Suspended Contact Name: John Condio - (C) Contact Email: John.Condio@hilcorp.com Authorized Name: Stan Golis Authorized Title:Sr. Area Operations Manager Authorized Signature: Plug Integrity BOP Test Mechanical Integrity Test Location Clearance Other: Yes No Spacing Exception Required?Subsequent Form Required: Approved by:COMMISSIONER APPROVED BYTHE COMMISSION Date: 5OtherAlter Casing Pull Tubing Conditions of approval: Notify Commission so that a representative may witness Sundry Number: COMMISSION USE ONLY 17. I hereby certify that the foregoing is true and the procedure approved herein will not be deviated from without prior written approval. Detailed Operations Program Packers and SSSV Type: No SSSV Installed Packers and SSSV MD (ft) and TVD (ft): Perforation Depth MD (ft):Tubing Size: Size Total Depth MD (ft):Total Depth TVD(ft): 9052 Effective Depth TVD:Plugs (MD):Junk (MD): Other Stimulate Re-enter Susp Well Suspend Plug for Redrill 5Perforate Perforate New Pool 9053, 8314 No SSSV Installed Date: Liner 4331 4-1/2"9169 - 13500 8414 - 9052 8430 7500 Well Status after proposed work: 16. Verbal Approval: 5 Change Approved Program 46 - 3262 46 - 3113 14. Estimated Date for Commencing Operations: BOP Sketch 48 - 176 Structural 7240 Proposal Summary 13. Well Class after proposed work: 4-1/2" HES TNT Perm Packer 9358 - 13388 8579 - 9048 4-1/2" 12.6#43 - 9174 Production 9512 8707 9512, 12483 None 48 - 176 9-5/8" 7" Contact Phone:907 564 4696 Date: 5410 128 20"Conductor 3090 GINJ 5 Post Initial Injection MIT Req'd? Yes No 5 Comm. STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION APPLICATION FOR SUNDRY APPROVALS 20 AAC 25.280 Surface 3216 5750 Intermediate 9300 45 - 9345 45 - 8567 Address:3800 Centerpoint Dr, Suite 1400, Anchorage, AK 99503 3. No 5Yes Casing Length MD TVD Burst Tubing Grade:Tubing MD (ft):Perforation Depth TVD (ft): Collapse MPSP (psi): Wellbore Schematic 2450 Comm.Sr Pet Eng Sr Pet Geo Sr Res Eng Form 10-403 Revised 03/2020 Approved application is valid for 12 months from the date of approval. By Meredith Guhl at 4:54 pm, May 12, 2021 321-237 Digitally signed by Stan Golis (880) DN: cn=Stan Golis (880), ou=Users Date: 2021.05.12 16:05:13 -08'00' Stan Golis (880) 10-404 DLB 05/12/2021 X MGR17MAY21 DSR-5/12/21 dts 5/17/2021 JLC 5/17/2021 Jeremy Price Digitally signed by Jeremy Price Date: 2021.05.17 11:29:11 -08'00' RBDMS HEW 5/19/2021 Well: N-31 PTD:215-175 API:50-029-23560-00 Well Name:N-31 API Number:50-029-23560-00 Current Status:Operable, Online AFE 212-00483 Estimated Start Date:5/20/2021 Estimated Duration: Reg.Approval Req’std?Date Reg. Approval Rec’vd: Regulatory Contact:Abbie Barker 564-4915 First Call Engineer:John Condio (907) 564-4696 (O)(602) 373-0659 (M) Second Call Engineer:Brodie Wages (907) 564-5006 (O)(713) 380-9836 (M) Current Bottom Hole Pressure:3250psi @ 8800’ TVD (estimated from offsets) MPSP:2450 psi (Assuming all gas) Min ID:3.725” XN Tie In Log:Halliburton – Coil Flag – June 8, 2018 Max Deviation:93 deg at 10261’md TBG Vol to Perfs:143 bbls (top perf @9358” MD) KCL Vol estimate:290 bbls Brief Well Summary: N-31 was drilled in 2016 as an offset producer to N-27 & N-07A updip Z4 Injectors (UZI). The well has had issues with paraffin and/or asphaltenes. A recent saturation log collected in December 2020 came back with the tools coated in asphaltenes (56% in sample). GOC pick from log = 9745’md (8757’ TVDss). Eline recently added perfs in the Sag with a plug set over Ivishak. The plug will be pulled with Slickline prior to CT rig-up This AFE covers the diesel/xylene wash and 250' of extended perforations using CT in N-31 Ivishak section. Expected IOR is 84 bopd. Notes Regarding Recent Wellbore Condition: > 04/18/21: Slickline: Broach/B&F/troubleshoot tbg obstruction, set 3.70” DD plug & stop. > 04/15/21: Eline: Perf’d SAG 9358’ – 9382’ MD > 04/14/21: Eline: CBL, good cement, TOC pick at 9344’ > 12/26/20: Eline: RPM log > 10/23/20: Drift with 2.25” Cent, 4.5” BLB, 1.75” S. Bailer, SD @ 9972’ SLM > 05/12/19: Set LGLV in sta #3, set OGLV in sta #1 > 05/11/19: Set LGLVs in sta #5 & 7 > 02/17/19: Cold TIFL Passed > 08/12/18: OA NFT Failed > 02/22/16: Pulled Plug @ 9117' MD, Set LGLVs > 02/17/16: MIT-IA Passed to 3695 psi Parker 272 > 02/17/16: MIT-T Passed to 3700 psi Liner Cement notes:Expect good cement across 4.5” liner interval > 100 bbls cement pumped (30% excess), Estimate 6 bbls lost during cement circ > Plug bumped as expected > 15 bbls excess cement recovered when circulate bottoms up. > 4.5” production liner & lap pressure test lost 0-psi Objective: 1) Drift to 11,900’md 2) Jet Diesel/Xylene across open perforations 11558-11578’md, 11806-11870’ md, 11870-11885’md 3) Add extended perforations 11,000-11,250’md (single run) Well: N-31 PTD:215-175 API:50-029-23560-00 a.Sundry Note: The well will be killed and monitored before making up the perfs guns. This will be done during the drift/logging run while POOH 4) Ensure Slickline has pulled D&D plug at 9512’ (set 4/18/21), pending step on JMS. Procedure: 1. RIH with 2.875” carrier, GR/CCL, JSN (at least 3.2” OD drift for 2-7/8” perf guns) 2. Jet perforation interval from ~11500’ to 11935’ MD (435’ gross) with 70 bbls of 50/50 Diesel/Xylene, come online with D/X wash, make one Down-pass and one Up-pass at 20 FPM at 1.5 BPM (previous correction factors for 1.75” CT was 13’ & 12.5’) 3. RBIH to 11,900’ MD, make logging pass up to at least 10,500’ MD, paint end-of-pipe flag 4. Kill well with 8.4 ppg, 1% KCL while POOH a. Wellbore volume to top perf= 143 bbls 5. Confirm well is dead, freeze protect tubing as needed. 6. Pickup 1.75” safety joint and TIW valve and space out before MU guns. Review well control steps with crew prior to breaking lubricator connection and commencing makeup of TCP gun string. Once the safety joint and TIW valve have been spaced out, keep the safety joint/TIW valve readily accessible near the working platform for quick deployment if necessary. 7. Break lubricator connection at QTS and begin makeup of TCP guns 8.MU and deploy 1 Run of 250’ of 2-7/8” perf guns, 6 spf, 60° phasing, min well ID= 3.725”, Max Gun Swell in Liquid= 3.047”, Max Gun Swell in Gas= not published for HAL Max Force,WSS discretion on which vendor to use. 9. RIH to coil flag make depth correction, correlate to HES Coil Flag log, 08-June-2018 10. Perforate 11,000’ to 11,250’ MD 11. POOH ensure hole stays full, stop at surface to confirm well is dead, freeze protect CT and tubing as needed 12. Review well control steps with crew prior to breaking lubricator connection and commencing breakdown of TCP gun string. 13. Laydown perf guns, secure well 14. RDMO, hand over to ops to POP Attachments: 1. As-built Schematic 2. Proposed Schematic 3. Coil Tubing BOPE Schematic 4. Equipment Layout Diagram 5. Standing Orders for Open Hole Well Control during Perf Gun Deployment 6. Tie-In Log/Perf Sheet Make up Pressure Control Equipment. Standing orders flow chart included with this sundry. Assure fluid level remains at surface. If circulating across the top, assure no excess flow. Coiled Tubing Unit If well is taking fluids, maintain continuous hole fill taking returns to tank until lubricator connection is re-established. mgr Well: N-31 PTD:215-175 API:50-029-23560-00 AS-BUILT Schematic Well: N-31 PTD:215-175 API:50-029-23560-00 Proposed Schematic Well: N-31 PTD:215-175 API:50-029-23560-00 Coiled Tubing BOPs Well: N-31 PTD:215-175 API:50-029-23560-00 Equipment Layout Diagram Well: N-31 PTD:215-175 API:50-029-23560-00 Standing Orders for Open Hole Well Control during Perf Gun Deployment Well: N-31 PTD:215-175 API:50-029-23560-00 Tie In: Add 3’ to be on depth – RA tag located at 10,700’ md corrected. Well: N-31 PTD:215-175 API:50-029-23560-00 Perforate: 11,000-11,250’md Well: N-31 PTD:215-175 API:50-029-23560-00 Hilcorp North Slope, LLCHilcorp North Slope, LLCChanges to Approved Work Over Sundry ProcedureDate: May 7, 2021Subject: Changes to Approved Sundry Procedure for Well N-31Sundry #:Any modifications to an approved sundry will be documented and approved below. Changes to an approved sundry will be communicated to theAOGCC by the workover (WO) “first call” engineer. AOGCC written approval of the change is required before implementing the change.StepPageDate Procedure ChangeHNSPreparedBy (Initials)HNSApprovedBy (Initials)AOGCC WrittenApproval Received(Person and Date)Approval:Asset Team Operations Manager DatePrepared:First Call Operations Engineer Date Operator Name:2. Development Exploratory Service 5 Permit to Drill Number:215-175 6.50-029-23560-00-00 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 13502 9512 8707 9053 None 9512, 12483 8314 Casing: Length: Size: MD: TVD: Burst: Collapse: Structural Conductor 128 20" 48 - 176 48 - 176 Surface 3216 9-5/8" 46 - 3262 46 - 3113 5750 3090 Intermediate 9300 7" 45 - 9345 45 - 8567 7240 5410 Production Perforation Depth: Measured depth: 9358 - 13388 feet True vertical depth:8579 - 9048 feet Tubing (size, grade, measured and true vertical depth)4-1/2" 12.6# 13cr85 43 - 9174 43 - 8419 9053 8314Packers and SSSV (type, measured and true vertical depth) 4-1/2" HES TNT Perm Packer Liner 4331 4-1/2" 9169 - 13500 8414 - 9052 8430 7500 12. Stimulation or cement squeeze summary: Intervals treated (measured): N/A Oil-Bbl Gas-Mcf Water-Bbl Casing Pressure Tubing Pressure 174107414471 757117 1005 216 370 194 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: Brodie Wages David.Wages@hilcorp.com Authorized Name:Stan Golis Authorized Title: Authorized Signature with Date:Contact Phone:907.564.5006 Treatment descriptions including volumes used and final pressure: 13. Sr. Area Operations Manager Operations Performed1. Abandon Plug Perforations 5 Fracture Stimulate Pull Tubing GSTOR WINJ WAG GINJ SUSP SPLUG 16. Well Status after work:Oil 5 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 measured9052 Sundry Number or N/A if C.O. Exempt: N/A No SSSV Installed Junk Packer Printed and Electronic Fracture Stimulation Data 5 Operations shutdown Change Approved Program N/A Senior Pet Engineer:Senior Res. Engineer: STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS Suspend 5Perforate 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 0028281, ADL 0028282 PBU N-31 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 Meredith Guhl at 10:38 am, May 04, 2021 Digitally signed by Stan Golis (880) DN: cn=Stan Golis (880), ou=Users Date: 2021.05.04 10:22:17 -08'00' Stan Golis (880) DSR-5/4/21 RBDMS HEW 5/5/2021 SFD 5/4/2021MGR26JUL2021 ACTIVITY DATE SUMMARY 4/13/2021 T/I/O = 1970/1970/50. Temp = SI. TBG FL (Eline request). ALP = 320 psi, SI @ CV. TBG FL @ 8080' (123 bbls). SV, WV, SSV = C. MV = O. IA, OA = OTG. 23:45 4/14/2021 ...Well shut in on arrival... (HES EL - cmt eval/wrp/addperf) LOGGED CEMENT BOND LOG FROM DEVIATION AT 10,012 - 8,930'. FIELD PICK TOC AT 9,344'. GOOD CEMENT THROUGHOUT LOGGING INTERVAL. ...Continued on 14-APR-2021... 4/15/2021 ...Continued from 14-APR-21...(HES EL - adperf) ENCOUNTER HYDRATES WHILE RIH. CLEARED UP BY PUMPING NEAT METHANOL. PERFORATE 9,358' - 9,382' WITH 24' x 2.875", 6 SPF, 60 DEG PHASING HSC LOADED W/ 17.5 GRAM MAXFORCE CHARGES. API 19B PENETRATION = 38.6", ENTRANCE HOLE = 0.37". CORRELATED TO BP PDCL DATED 8-APR-2016. ***Job Complete. Well shut in on departure. SL to set retrievable plug before POP.*** 4/17/2021 **WELL S/I ON ARRIVAL** ENCOUNTER OBSTRUCTION IN X NIP @ 9024'MD w/ 3.79" GAUGE RING WORK THROUGH NIPPLE & PACKER, UNABLE TO WORK THROUGH X-NIP @ 9089'MD BRUSH NIPPLES w/ BLB & 3.60" GAUGE RING, BRUSH TO TARGET DEPTH @ 9550'MD **WSR CONT'D ON 4/18/21** 4/18/2021 **WSR CONT'D FROM 4/17/21** DRIFTED w/ 3.70" WRP DRIFT (UNABLE TO PASS XN @ 7156'MD) BROACHED TBG & LINER w/ 3.696" BROACH FROM XN TO 9275'MD, DRIFT FREELY TO TARGET DEPTH RAN BRUSH & 3.60" GAUGE RING TO TARGET DEPTH @ 9550'MD DRIFTED w/ WRP DRIFT TO 9550'MD SET 3.70" SPRING STYLE SLIPSTOP @ 9517'MD SET 3.70" D&D PLUG @ 9513'MD SET 3.70" SLIPSTOP @ 9512'MD SET P-PRONG @ 9508'MD **TURNED WELL OVER TO DSO TO POP** Daily Report of Well Operations PBU N-31 Samuel Gebert Hilcorp North Slope, LLC GeoTechnician 3800 Centerpoint Drive, Suite 1400 Anchorage, AK 99503 Tele: 907 777-8337 Fax: 907 777-8510 E-mail: sam.gebert@hilcorp.com Please acknowledge receipt by signing and returning one copy of this transmittal or FAX to 907 777.8510 Received By: Date: DATE: 05/03/2021 To: Alaska Oil & Gas Conservation Commission Natural Resource Technician 333 W 7th Ave Suite 100 Anchorage, AK 99501 DATA TRANSMITTAL PBU N-31 (PTD 215-175) RBT Rotating Bond Tool 04/14/2021 Please include current contact information if different from above. PTD: 2151750 E-Set: 35071 Received by the AOGCC 05/03/2021 05/03/2021 Samuel Gebert Hilcorp North Slope, LLC GeoTechnician 3800 Centerpoint Drive, Suite 1400 Anchorage, AK 99503 Tele: 907 777-8337 Fax: 907 777-8510 E-mail: sam.gebert@hilcorp.com Please acknowledge receipt by signing and returning one copy of this transmittal or FAX to 907 777.8510 Received By: Date: DATE: 02/15/2021 To: Alaska Oil & Gas Conservation Commission Natural Resource Technician 333 W 7th Ave Suite 100 Anchorage, AK 99501 DATA TRANSMITTAL PBU N-31 (PTD 215-175) RPM 12/24/2020 ANALYSIS RAW DATA Please include current contact information if different from above. PTD: 2151750 E-Set: 34706 Received by the AOGCC 02/16/2021 02/16/2021 RECEIVED • STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION CO ION REPORT OF SUNDRY WELL OPERA ONS APR 1 2 2018 1. Operations Performed Abandon ❑ Plug Perforations B Fracture Stimulate 0 Pull Tubing 0 Operation ei CoC Suspend 0 Perforate 0 Other Stimulate ❑ Alter Casing 0 Change Approved°lProgram 0 Plug for Redrill 0 Perforate New Pool 0 Repair Well 0 Re-enter Susp Well 0 Other:Set Plug(CIBP) Q 2. Operator Name: BP Exploration(Alaska),Inc 4. Well Class Before Work 5. Permit to Drill Number: 215-175 3. Address: P.O.Box 196612 Anchorage, Development ® Exploratory 0 AK 99519-6612 Stratigraphic 0 Service ❑ 6. API Number: 50-029-23560-00-00 7. Property Designation(Lease Number): ADL 028282,0282281 8. Well Name and Number: PBU N-31 9. Logs(List logs and submit electronic and printed data per 20AAC25.071): 10. Field/Pools: PRUDHOE BAY,PRUDHOE OIL 11.Present Well Condition Summary: Total Depth: measured 13502 feet Plugs measured 12470 feet true vertical 9052 feet Junk measured None feet Effective Depth: measured 12470 feet Packer measured 9053 feet true vertical 9048 feet Packer true vertical 8314 feet Casing: Length: Size: MD: TVD: Burst: Collapse: Structural Conductor 128 20" 47-175 r 47-175 3060 1500 Surface 3215 9-5/8" 46-3261 46-3112 5750 3090 Intermediate 9301 7" 45-9346 45-8568 7240 5410 Production Liner 4331 4-1/2" 9169-13499 8414-9052 9020 8540 Perforation Depth: Measured depth: feet SCANNED . l True vertical depth: feet Tubing(size,grade,measured and true vertical depth) 4-1/2"12.6#13Cr85 43-9174 43-8419 Packers and SSSV(type,measured and 4-1/2"HES TNT Perm Packer 9053 8314 true vertical depth) No 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: 772 56041 240 1624 1158 Subsequent to operation: 149 2868 241 1003 170 14.Attachments:(required per 20 AAC 25.070.25.071,a 25.283) 15.Well Class after work: Daily Report of Well Operations 0 Exploratory ❑ Development II Service 0 Stratigraphic 0 Copies of Logs and Surveys Run 0 16.Well Status after work: Oil LSI Gas ❑ WDSPL ❑ Printed and Electronic Fracture Stimulation Data 0 GSTOR 0 WINJ 0 WAG 0 GINJ 0 SUSP 0 SPLUG 0 17.I 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 Authorized Name: Bergene,Matthew Contact Name: Bergene,Matthew Authorized Title: Production Engineer Challenger Contact Email: Matthew.Bergenet bp.com Authorized Signature: - C/ Date: 1-1l(zit cg Contact Phone: +1 9075644849 Form 10-404 Revised 04/2017 1/7-(-- 4/24/1 0 MS D 1 APR 13 ZI1 mit Original Only , 'red- • • Alaska Oil and Gas Conservation Commission 333 West Seventh Avenue Anchorage, AK 99501-3572 RE: BP Exploration (Alaska), Inc. Report Of Sundry Well Operations (10-404) April 11, 2018 To Whom it May Concern: Attached please find the Report Of Sundry Well Operations for Plug Perforations (Set Plug — CIBP) for Well PBU N-31, PTD #215-175. Sincerely, BP Exploration (Alaska) Inc. P.O. Box 196612 Anchorage, AK 99519-6612 Attachment: Form 10-404 BP Exploration (Alaska), Inc. P.O. Box 196612 Anchorage,AK 99519-6612 I i Daily Report of Well Operations PBU N-31 ACTIVITYDATE SUMMARY CTU#9- 1.75"Coil Job Objective: Set CIBP MIRU CTU. Make up 3.70"JSN Drift BHA and RIH. 3/18/2018 ...Job in Progress.... CTU#9- 1.75" Coil ***Continue from 3/18/18*** Job Objective: Set CIBP Continue drift w/3.70"JSN, tag PBTD @ 13399' CTM. POOH. Had to continually pump down backside to keep well fluid fluid packed due to excessive chrome abrasion while POOH. Make up WFT 4 1/2" CIBP. RIH and set at 12,470'CTMD. POOH and FP Well. RDMO CTU. 3/19/2018 ***Job Complete*** Fluids Summary Bbls Type 186 60/40 Methanol 288 1% Slick KCL with Safelube .TREE= 4-1/16"CAN 4110 WELLHEAD= FLC NOTES: WELL ANGLE>70°0 998V.MAX ACTUATOR= BAKER C DOGLEG:1 S°0 9538'" CHROME TBG&LHR"' OKB.FEV= —_- 91.05 BF.ELEV% • ----ilk Max Armee= 93'0102'61 te.`. • Rattan MD= 9849' • {, ( ttsnTVD= 88047 SS ,�'� –}412'HES XNPD=3.813' �' mo' 20"r#SUL.AT®COMUCTOR, 178' GAS LFT MANDRELS 1298,X-56,D=18.75' ST PA) TVD DEV TYPE VLV LAIGI SIZE DATE 9-5/8"CSG,440*,L-80 BTC7K 55,D=8.835 - 3262' IIII 7 3912 3708 24 KEG-2 DOLE 8K 16 02/22/16 6 5388 5054 24 103G-2 CM( BK 0 02/16116 5 6083 5688 24 1033G2 SO BK 20 02/22/16 Minimum ID =3.725" @ 9156' 4 6982 6502 25 KBG-2 DMY BK 0 02116/16 4-112" HES XN NIPPLE 3 7805 7234 30 KBG-2 DMY BK 0 02116/16 2 8503 7838 30 KBG-2 OM( BK 0 02/16/16 1 8949 8224 31 KBG-2 OW BK 0 02116/16 TOP OF CEMENT w/30%EXCESS(02/05/16) j--{ --9097 le 1r II `• 9024' –14-112"FES X NP,1)=3.813' *I'1 V \I;i jw` ��►I1 9053' }--{T X 41/2"FES TNT PKR,D=3.865' te • mi�# 9086' 4-1/T FES X NP D=3.813" I 04 tI� 'I Ari ►I,9188' —141/2"FES XN NP,D=3.725" 0 111 t. TOP OF 4-1/2'uwair —I 9169' 4.1k 9169' 1--r X 5'BKR FfiD-E ZXP LTP V4 ►�i w/TIEBACK SLV,D=4.340' 412'TBG,12.68,13CRA-86 VAM TOP/BTC—M, N 9174' s�:►'� ►mss* 9174' H41/2'WLEG,I)=3.958" I .0152 bpf,D=3.958' J! �� ,►��i !'• :;s,! HELM 1T NOT LOGGED I. I I4 I. 'J16 bI t1•% 4 4 9193' H r X 5-BKR DG FLEXLOO(l4GR,D=4.310''] .`�I ►� 644 .%til clic vi 9203' H5'X4-12"XO.D=3.920' Jr4 I CSG,26#,L-80 VAM TOP HC,D=6276' 9345' I 14 14I 44,4. I I4 +4 !4i i iii PERFORATION SUMMARY aI 10693' H PUP JT w/RA TAG REF LOG:BAKE MRF#A ON 02/28/16 •I• :6.. ANGLE AT TOP PERE:83'0 11870' ItI IIIII Nie:Refer to Roduction DB for hes4arical perf data •j iii 12166' PUP JT w/RA TAG SIZE SPF INT8WAL Opn/Sqz SHOT SOZ Li �4* 2-7/8" 6 11870-11885 0 08/17/17 �I1 4 12470'C7810 4-Vr wll T CEP(03/19/18) 2-7/8" 6 12720-12930 C 03/02/16 4.' 2-7/8" 6 13186-13218 C 08/17/17 ,I4 2-7/8" 6 13260-13324 C 08/19/17 ►r4 IP II 2-7/8' 6 13324-13388 C 08/18/17 •,r MI 1I I ty• MI • _ ys4 IIII FWD 13410'ELM t4. tio t'lreeiVi""A 4I411111111t I4., 4-1/2"LNR 12.6'9,13CR4-88 VAM TOP, --I 13500' '!!1.11. •. .0152 bpi,D=3.958' DATE REV BY COLIYB'ITS HATE REl/BY COMMENTS PRIDHOE BAY UNIT 02118/18 P-272 NTIAL COMPLETION 08/28/17 JD N.RA)ADFEFFS(08/19/17) WELL: N-31 02/19/16 Al) DRLG HO CORRECTIONS 03/21/18 JCflJMD SET CBP(03/19/18) PERLIIT No:/2151750 0223116 JMMJMD GLV CIO(02/22/16) AR ND: 50-029-23560-00 03/10/16 JRIJMD MAL OMAPFFmVAL SED 8,T11N,R13E 2086'FSL&4714'Fa 03/10/16 ATO/JMD PERiFS&FRIT FBTD(0228/16) 03/25/16 TRIAD MINOR BITS BP Btpioration(Alaska) • STATE OF ALASKA 0 ALASKA OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS 1. Operations Performed Abandon 0 Plug Perforations 0 Fracture Stimulate 0 Pull Tubing ❑ Operations shutdown 0 Suspend 0 Perforate 0 Other Stimulate 0 Alter Casing 0 Change Approved Program 0 Plug for Redrill 0 Perforate New Pool ❑ Repair Well 0 Re-enter Susp Well 0 Other. 12 2. Operator Name: BP Exploration(Alaska),Inc 4. Well Class Before Work rk 5. Permit to Drill Number: 275-175 ment 3. Address: P.O.Box 196612 Anchorage, Development ® Exploratory p oratory ❑ AK 99519-6612 Stratigraphic 0 Service ❑ 6. API Number: 50-029-23560-00-00 7. Property Designation(Lease Number): ADL 0028282 8. Well Name and Number. PBU N-31 9. Logs(List logs and submit electronic and printed data per 20AAC25.071): 10. Field/Pools: PRUDHOE BAY.PRUDHOE OIL 11.Present Well Condition Summary: RECEIVED [ -1�` . Total Depth: measured 13502 feet Plugs V Y measured feet 1 true vertical 9052 feet Junk measured feet SEP 4 2017 Effective Depth: measured 13412 feet Packer measured 9053 feet true vertical 9048 feet Packer true vertical 8314 feet AOGCC Casing: Length: Size: MD: ND: Burst: Collapse: Structural Conductor 128 20"129#X-56 47-175 47-175 3060 1500 Surface 3215 9-5/8"40#L-80 46-3261 46-3112 5750 3090 Intermediate 9301 7"26#L-80 45-9346 45-8568 7240 5410 Production Liner 4331 4-1/2"12.6#13Cr8 9169-13499 8414-9052 9020 8540 Perforation Depth: Measured depth: 11870-11885 feet 12720-12930 feet 13186-13218 feet 13260-13324 feet 13324-13388 feet True vertical depth: 9038-9040 feet feet 9050-9052 feet 9050-9049 feet 9047-9047 feet 9047-9048 feet Tubing(size,grade,measured and true vertical depth) 4-1/2"12.6#13Cr85 43-9174 43-8419 Packers and SSSV(type,measured and 4-1/2"HES TNT Perm Packer 9053 8314 true vertical depth) 12.Stimulation or cement squeeze summary: Intervals treated(measured): Treatment descriptions including volumes used and final pressure: SCANNED NOV 0 12017, 13. Representative Daily Average Production or Injection Data Oil-Bbl Gas-Mcf Water-Bbl Casing Pressure Tubing Pressure Prior to well operation: 404 24294 198 2001 1060 Subsequent to operation: 1268 48897 423 1805 1122 14.Attachments:(required per 20 AAC 25.070.25.071,&25.283) 15.Well Class after work: Daily Report of Well Operations 0 Exploratory 0 Development 0 Service 0 Stratigraphic 0 Copies of Logs and Surveys Run 0 16.Well Status after work: Oil 0 Gas 0 WDSPL 0 Printed and Electronic Fracture Stimulation Data 0 GSTOR ❑ WINJ 0 WAG ❑ GINJ 0 SUSP 0 SPLUG 0 17.I 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 Authorized Name: Bergene,Matthew Contact Name: Bergene,Matthew Authorized Title: -1;114— J Production� Engineer Challenger Contact Email: Matthew.Bergene@bp.com Authorized Signature: v Date: f3 S 7 Contact Phone: +1 9075644849 Form 10-404 Revised 04/2017 '"'"")11976 /17- �jl oA /7 RBDIVIS i , Lill Submit Original Only • • Alaska Oil and Gas Conservation Commission 333 West Seventh Avenue RECEIVED Anchorage, AK 99501-3572 SEP 14 2017 AOGCC RE: BP Exploration (Alaska), Inc. Report of Sundry Well Operations Summary September 13, 2017 To Whom it May Concern: Attached please find the Report of Sundry Well Operations for Addition of Perforations for Well N-31, PTD # 215-175. Sincerely, BP Exploration (Alaska) Inc. P.O. Box 196612 Anchorage, AK 99519-6612 Attachment: Form 10-404 BP Exploration (Alaska), Inc. P.O. 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E & 26250 re = q ƒ \ a = � >. w C) ce) 2 o » a 0 0 t k $ k 2 2 k - @ — © - " 2 k | as a) N—• c a �a \ \ . < a a (0 @ 2 _J 2 _J i @ c ■ a t 2 2 C)a N 0 U f U c S a m § c U t 2 ,-- D mo & L' ' 5 2 . o = .0 't - t - £ -a e 5 Uk ƒ m ƒ 2 > 2 | 3 ƒ k � e N- , c - JgG2 8 TREE= 4-1/16"CNV • • • WELLHEAD ACTUATOR=__ BAKER -3 SAFETY NO @ 9538'•WELLp`C ROME TBG&LNR MAX OKB ELEV= 91.05' - 11 BF.E.EV= 41P� KOP= 40 r+► Max Angie= 93'@1026V tlit% Datum kV= 9849' ••41, Oji _--- SSSt _ 2188 —141t2"FESS X NP,D=3.813" Datum TVD=__ 8800' 40 20"INSULATED CONDUCTOR — 176' !) ` GAS LFT MANDRE_S 129#,X-56,D=18.75` ST MD TVD DEV TYPE VLV LATCH SIZE DATE 9-5/8"CSG,404,L-80 BTC/K-55,D=8.835' H I 3262' IIM 7 3912 3708 24 KBG-2 DOME BK 16 02/22/16 6 5388 5054 24 KBG-2 MY BK 0 02/16/16 5 6083 5688 24 KBG-2 SO BK 20 02/22/16 Minimum ID =3.7266" @ 9156' 4 6982 6502 25 KBG-2 DPW BK 0 02/16/16 4-1/2" HES XN NIPPLE 3 7805 7234 30 KBG-2 OMY BK 0 02/16/16 2 8503 7838 30 KBG-2 MY BK 0 02/16/16 1 8949 8224 31 KBG-2 DMt' BK 0 02/16/16 TOP OF CEMENT w/30%EXCESS(02/05/16) —I —8067' -41" ' 16 sem' 9024' H4-1/2"HES X NP,D=3.813' tor klie. r1 9063' —Jr X 4-1/2'HES TNT PKR,D=3.865' *rag ill fr# 9086' 4-112"FES X NF?D=3.813" iririi 4,4 i►, 41 ,, 1 i ; t 9156* -14-1/2"HES XN NP,D=3.725' TOP OF 4-1/2'LNR/C MT -1 9169' 4j916 .1—r X 5`BKR HRD-EZXP LW i wTIEBACK SLV,D=4.340" 4-11T 113G,12.6#,13CR-85 VAM TOFYBTC-M, H 9174' �' rig►4 CleN 9174' H4-1/2"WLEG,D=3.958"1 .0152 bpf,D=3.958" K '4'a 1, r ; I HELMS Tr NOT LOGO ..% ili I �4,4'��"4.. 9193' HT X 5"BKR DG FLEXLOCK HGR,ID=4.310" IA�lib % 9203' —15"X 4-1/2"XO,0=1920" T CSG,26#,L-80 VAM TOP HC,D=6.276' H 934.5' fit' �j Ili ,\+ e 14 6 1 PERFORA11ON SUMMARY c .61P 4 ,4P ►k 10693'j—IFU'JTw/RA TAG REF LOG:BAKER ARRA ON 02/28/160 S +J 410 ANGLE AT TOP PERF:83'@@ 11870' 14,• • Nate:Refer to Production DB for historical pert data S s 444 SIZE SPF INTERVAL Opn/Sqz SHOT SOZ •' 12156' HR1PJTwtfiATAG 2-7/8" 6 11870-11885 0 08/17/17 0'i.% 2-7/8" 6 12720-12930 0 03/02/16 l 2-7/8" 6 13186-13218 0 08/17/17 *6 —_. 2-7/8" 6 13260-13324 0 08/19/17 k; 2-7/8" 6 13324-13388 0 08/18/17 N. '4P RP IM N. I • PBTD —113410'ELM x'r.� 111teti 111 4-1/2"LNR,12.6#,13CR-85 VAM TOP, —I 13500' . . .1.....1111.11lat .0152 bpf,D=3.958" DATE REV BY COMMENTS DATE REV BY CONVENTS FR..DHOE BAY UNIT 02/18/16 P-272 INTIAL COMPLETION 08/28/17 JDMIJMD ADPERFS(08/19/17) WELL: N-31 02/19/16 JMD DRLG HO CORRECTIONS PERMIT No:"2151750 02/23/16 JMIMJMD GLV GO(02/22/16) AFI No: 50-029-23560-00 I 03/10/16 JR/JMD FINAL ODEAPPROVAL SEC 8,T11 N,R13E 2086'FSL 8 4714'FEL 03/10/16 ATO/AD PEWS&EDIT FBTD(02/28/16) 03/25/16 TR/JM? MNOR®ffS BP Exploration(Alaska) 1 - V • 411 is b 443 1 o Q N c col 2 m1 2 V� co C co CO \V V N 1 N 1 414 C m O m O . 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No y z O F @ o m Q o o v « O 0 0 0 0 0 U C) 0 U U U `° 2 ) .0 _ I UU V a D 0 O a) 0 0 0 0 0 0 0 0 0 0 0 0 0 d OLL o ° aID °) d a 2 w w w w LU w LU w w w W J 3 F. 0 a CD • i c vo 0 G j N 9 o O to Oio co z ! N i - on Ui 11$ > o 5 j a c O n 2 6 Z E 1 a II10J ✓ Q Z r' N r N w of O 0 a WW o LL J a W w J V m o , Z Q S L co7 J d a ° CO = 0 a O N ii E E E' • t0 p .E' I� M o -I E E °' Q Tto M p w V Z 1 1 F Z co 1 _ �I O N CO Q N M M O a) a) V1 cc • 0 Q rt ap Q O• E ki d V E c Z d • O N M O O in j m d OI 3 N y d ai .` O V O w c O LO Z p m O w t) J w cD a d 16 U L a E m y EE a c7 E 0 d 2 0 U Gr.t 0 0 • Link, Liz M (DOA) From: Lastufka, Joseph N <Joseph.Lastufka@bp.com> Sent: Wednesday, June 08, 2016 11:14 AM To: AOGCC Reporting (DOA sponsored) Subject: PBU N-31/ PTD #215-175 Hello, Please reference the following well: Well Name: PBU N-31 Permit#: 215-175 API #: 50-029-23560-00-00 Date of Test: 6/1/2016 Type of Test: IPT (Initial Production Test) Choke Size: 96 Choke Unit: Production Method: Gas Lift Duration (Hours Tested): 8 Top Reference (Top Perf MD): 12720' Bottom Reference (Bottom Perf MD): 12930' Tubing Flowing (Pressure): 200 Casing Pressure: 1260 Total Test Rate (0, G, W): 669/ 1690/ 162 24-Hour Rate(0, G, W): 2007/5070/486 Gravity(Oil, API): Not Available GOR(Gas-Oil Ratio): 2527 This well began Production on Method of Operations on this date: June 1, 2016 1 RBDMS 1)- JUN 0 8 2016 STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMM MAR 3 0 2016 WEL MPLETION OR RECOMPLETION REP AND LOG (/�)� ,///��►►►' la. Well Status: Oil 0 • Gas 0 SPLUG 0 Other 0 Abandoned 0 Suspended ❑ 1b.Well Cl s ' '-'"C� 20AAC 25.105 20AAC 25.110 • Development 0 Exploratory 0 GINJ 0 WINJ 0 WAG 0 WDSPL 0 No.of Completions: One • Service ❑ Stratigraphic Test 0 2. Operator Name: 6. Date Comp.,Susp.,or Aband.: 14.Permit to Drill Number/Sundry BP Exploration(Alaska),Inc 2/20/2010 'sit,'Ito .L 215-175 ' 3. Address: 7. Date Spudded: 15. API Number: P.O.Box 196612 Anchorage,AK 99519-6612 1/17/2016 50-029-23560-00-00 - 4a. Location of Well(Governmental Section): 8. Date TD Reached: 16. Well Name and Number: 2/13/2016 • PBU N-31 Surface: 2086'FSL,4714'FEL,Sec.08,T11N,R13E,UM • 9 KB Ref Elevations 17. Field/Pool(s): 91.05 Top of Productive Interval: 251'FSL,1527'FEL,Sec.08,T11N,R13E,UM GL 43.9 • BF PRUDHOE BAY,PRUDHOE OIL • Total Depth: 122'FSL,1639'FWL,Sec.09,T11N,R13E,UM 10. Plug Back Depth(MD/TVD): 18. Property Designation: • 13412'/9048' - ADL 028282&028281 4b. 4b.Location of Well(State Base Plane Coordinates,NAD 27): 11. Total Depth(MD/TVD): 19. Land Use Permit Surface:x- 634412 • y- 5967990 , Zone - ASP 4 • 13502'/9052' • _ 70-083 TPI: x- 637638 y- 5966214 Zone - ASP 4 12. SSSV Depth(MD/TVD): 20 Thickness of Permafrost MDfTVD: Total Depth:x- 640806 y- 5966143 Zone - ASP 4 None 2039'/1972' 5. Directional or Inclination Survey: Yes 0 (attached) No 0 13. Water Depth,if Offshore: 21. Re-drill/Lateral Top Window MDTTVD: Submit electronic and printed information per 20 AAC 25.050 N/A (ft MSL) N/A 22. Logs Obtained List all logs run and,pursuant to AS 31.05.030 and 20 AAC 25.071,submit all electronic data and printed logs within 90 days of completion, suspension,or abandonment,whichever occurs first.Types of logs to be listed include,but are not limited to:mud log,spontaneous potential,gamma ray,caliper, resistivity,porosity,magnetic resonance,dipmeter,formation tester,temperature,cement evaluation,casing collar locator,jewelry,and perforation record. Acronyms may be used.Attach a separate page if necessary MWD/GR,MWD/GR/RES,MWD/GR/RES/NEU,RPM 23. CASING,LINER AND CEMENTING RECORD CASING WT.PER GRADE SETTING DEPTH MD SETTING DEPTH TVD HOLE SIZEAMOUNT FT. CEMENTING RECORD PULLED TOP BOTTOM TOP BOTTOM 20" 129# X-56 48' 176' 48' 176' 42"/Driven 9 cu yds Cement 9-5/8" 40# L-80 47' 3262' 47' 3113' 12-1/4" 1587 sx LiteCrete,230 sx Class'G' 7" 26# L-80 45' 9345' 45' 8567' 8-3/4" 288 sx Class'G' 4-1/2" 12.6# 13Cr85 9169' 13500' 8414' 9052' 6-1/8" 479 sx Class'G' 24. Open to production or injection? Yes 0 • No 0 25. TUBING RECORD If Yes,list each interval open(MD/TVD of Top and Bottom;Perforation GRADE DEPTH SET(MD) PACKER SET(MD/TV Size and Number): 4-1/2"12.6#13Cr85 9174' 9053'/8314' 2-7/8"Gun Diameter,6 spf COMPLETION 12720'-12930' 9050'-9052' nATI:: 26. ACID,FRACTURE,CEMENT SQUEEZE,ETC. -- (2,/(49 Was hydraulic fracturing used during completion? • ---,-----,--.“-:,,401,4Per 20 AAC 25.283(i)(2)attach electronic and printed Yes 0 No 0 information LL DEPTH INTERVAL(MD) AMOUNT AND KIND OF MATERIAL USED 2200' Freeze Protect w/74 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 Oil-Bbl: Gas-MCF: Water-Bbl: Choke Size: Gas-Oil Ratio: Test Period ...•► Flow Tubing Casing Press: Calculated Oil-Bbl: Gas-MCF: Water-Bbl: Oil Gravity-API(torr): Press 24 Hour Rate �40'' Form 10-407 Revised 11/2015 CONTINUED ON PAGE 2 Submit ORIGINAL only r. WaTt. 512116 MO .7SD 5,..-s,e RBDMS t * MAR 3 1 2016 28. CORE DATA Conventional Core(s) Yes 0 No ll • Sidewall Cores Yes ❑ No RI If Yes to either question,list formations and interva s 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 25.071. 29. GEOLOGIC MARKERS(List all formations and markers encountered): 30. FORMATION TESTS NAME MD TVD Permafrost-Top 47' 47' Well Tested? Yes 0 No El Permafrost-Base 2086' 2019' If yes,list intervals and formations tested,briefly summarizing test results.Attach Top of Productive Interval 10190' 8981 separate sheets to this form,if needed,and submit detailed test information per 20 AAC 25.071. Ugnu 4135' 3912' West Sak 5689' 5328' Colville Mudstone 5907' 5527' HRZ 7344' 6829' Base of HRZ 7612' 7066' Kalubik 7613' 7067' LCU/Miluveach 7623' 7076' Kingak 7827' 7253' Sag River 9349' 8571' Shublik A 9386' 8603' Shublik B 9436' 8645' Shublik C 9455' 8661' Sadlerochit-Zone 4B 9484' 8685' 42SB-Zone 4A 9660' 8806' CGL-Zone 3 9778' 8863' Base of CGL-Zone 2C 9947' 8929' 23SB-ZONE 2B 10190' 8981' Formation at total depth: Zone 2B 10190' 8981' 31. List of Attachments: Summary of Daily Drilling Reports,Summary of Post-Rig Work,LOT/FIT Summary,Survey,Cement Reports,As-Built Information to be attached includes,but is not limited to:summary of daily operations,wellbore schematic,directional or inclination survey,core analysis,paleontological report,production or well test results,per 20 AAC 25.070. 32.I hereby certify that the foregoing is true and correct to the best of my knowledge. Contact: Rosenbaum,Jesse E Email: Jesse.Rosenbaum@bp.com Printed Name: Joe La Title: Drilling Technologist Signature: EMT' ',I Phone: +1 907 564 4091 Date:3/22V/, 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. All laboratory analytical reports regarding samples or tests from a well must be submitted to the AOGCC,no matter when the analyses are conducted. Item 1 a. 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 lb.Well Class Service wells:Gas Injection,Water Injection,Water-Alternating-Gas Injection,Salt Water Disp,Water Supply for Injection,Observation or Other. Item 4b.TPI(Top of Producing Interval). Item 9. The Kelly Bushing and Ground Level elevations 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 15.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 29. Item 22.Review the reporting requirements of 20 AAC 25.071 and,pursuant to AS 31.05.030,submit all electronic data and printed logs within 90 days of completion,suspension,or abandonment,whichever occurs first. Item 23.Attached supplemental records 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 MC 25.071. Item 31.Pursuant to 20 AAC 25.070,attach to this form:well schematic diagram,summary of daily well operations.directional or inclination survey,and other tests as required including,but not limited to:core analysis,paleontological report,production or well test results. Form 10-407 Revised 11/2015 Submit ORIGINAL Only CIW IDY VUEL D 4 1/16"FMC * N -31 DO DOGLEG: NOTES: WELL AC ROME TBG 9981'. LNR MAX ACTUATOR= BAKER CI @ OKB.ELEV= 91.05': 4.11 BF.ELEV= * KOP= .t, Ar Max Angle= 93°@ 10261' .w :` Datum MD= 9849'! :i2188' H4-112"HES XNP,D=3.813" Datum ND- 8800'SS N 4- 20"INSULA I HJ CONDUCTOR — 176' GAS LFT MANDRELS 129#,X-56,ID=18.75" ST MD I V[) DEV TYPE VLV LATCH SCE DATE 9-5/8"CSG,40#,L-80 BTC/K-55,D=8.835" — 3262' 1--0 7 3912 3708 24 KBG-2 DOME BK 16 02/22/16 6 5388 5054 24 KBG-2 DMY BK 0 02/16/16 5 6083 5688 24 KBG-2 SO BK 20 02/22/16 Minimum ID =3.725" @ 9156' 4 6982 6502 25 KBG-2 DMY BK 0 02/16/16 4-1/2" HES XN NIPPLE 3 7805 7234 30 KBG-2 DMY BK 0 02/16/16 2 8503 7838 30 KBG-2 DMY BK 0 02/16/16 1 8949 8224 31 KBG-2 DMY BK 0 02/16/16 TOP OF CEMENT w/30%EXCESS(02/05/16) H —806T 1` , 1119024' —14-1/2"HES X NP,D=3.813" .1, it, l 1`F= �� 9053' H7"X 4-1/2"HES TNT PKR,D=3.865" , 1 e , • 9086' H4-1/2"HES X NP,D=3.813' Ilik �i I. , 9156' H4-112"HES XN NP,JO=3.725" II I* TOP OF 4-112'LNR/CMT —{ 9169' I4 9169' —7"X 5"BKR HRD-E ZXP LTP i w TTlE$ACK SLV,ID=4.340" 4-1/2"TBG, 12.6#,13CR-85 VAM TOPIBTC-M, H 9174' j ��4 9174' —14-112"WLEG,D=3.958" rig I.0152 bpf,D=3.958" I, I E %'� E►j —H_MD TT NOT LOGGED %.4.7 IP ilifral ►j1' } I 9193' —17"X 5"BKR DG FLEXLOCK HGR,D=4.310" V Alp I a 1i• + w. 9203' —{5"X 4-112"XO,D=3.920" .:4*. t 7"CSG,26#,L-80 VAM TOP HC,D=6.276" H 9345' Ole'.*# F* w mak' PERFORATION SUMMARYr k* .-.4 + 10693' --I PUP 1f w/RA TAG REF LOG.BAKER MRPM ON 02/28/16 + ANGLE ATTOP PERE:89°@12720' .i. ►.*}. Note:Refer to Roduction DB for historical perf data ' k' SIZE SPF INTERVAL Opn/Sqz SHOT SOZ i *' ;` t'...; 12156' —{PUPJT w/RA TAG 2-7/8" 6 12720-12930 O 03/02/16 }* A'.t !fit k. +'.t k'X AL 4.+ om. a*:: . . k mm —13410'ELM r }" 4-1/2"LNR 12.6#,13CR-85 VAM TOP, —{ 13500' .0152 bpf,D=3.958" DATE REV BY COMMENTS C ATE REV BY COMMENTS F{RJDHOE BAY UNT 02/18/16 P-272 INITIAL COMPLETION WELL N-31 02/19/16 JMD DRLG HO CORRECTIONS PERMIT No:"2151750 02/23/16 JMMJMD GLV C/0(02/22/16) AR No: 50-029-23560-00 03/10/16 JR/JMD FINAL ODE APPROVAL SEC 8,T11 N,R13E,2086'FSL&4714'FEL 03/10/16 ATO/JMD FERFS R ERCT PBTD(02/28/16) — 03/25/16 TR/JMD MINOR EDITS BP Exploration(Alaska) • • 11*$S1IMuP$qPFIZLOT/ Frrsurnrna ,; Well Name: N-31 Surface Leak Off Test Test Test Depth Test Depth AMW Pressure Pressure / EMW Date Type (TMD-Ft) (TVD-Ft) (ppg) (psi) (BHP) (psi) ' /. (ppg) 01/23/16 LOT 3,262.00 3,099.44 9.50 850.00 2,379.59 14.78 02/08/16 FIT 9,345.00 8,567.00 8.60 590.00 4,417.34 9.93 Page 1 of 1 I L_......., 6 5 •. i _- o �� _ _, � 1,. jI t 1 N PAD 2a I ' 8 t. r 'I L — — N PAD ' I : +.Tis PROJECT 27 I 7 I30 D - ;=.- 23 0I '%*''''''17; a0 N-31 0 1', 1 18 I ,7 6 el VICINITY MAP 0 N.T.S. Sm I I 4g r VI IF') 3ID rl -.11 93 —1 Z 1 Z � M NV,♦1111 VIII t m m 2a �44� �tlOFb '. 4,5, # I 28SW LEGEND: GRAPHIC SCALE �� .�� 0114400 so 0 125 250 500 I +„+ , s.. 400 40 AS—BUILT t ( IN FEET ) '(Chart F. Allison . ;= o EXISTING CONDUCTOR 1 inch =250 ft. - '1, 1 0'.08 .it r "`ri'(OWE6 i►�'4 NOTES: VO, 1614 1 ALASKA STATE PLANE COORDINATES ARE ZONE 4 NAD27. SURVEYOR'S CERTIFICATE GEODETIC COORDINATES ARE NAD27. I HEREBY CERTIFY THAT I AM 2, HORIZONTAL AND VERTICAL CONTROL ARE PROPERLY REGISTERED AND LICENSED BASED ON N PAD OPERATOR MONUMENTS N-1 TO PRACTICE LAND SURVEYING IN AND N-2. THE STATE OF ALASKA AND THAT 3. ELEVATIONS ARE BP EXPLORATION MEAN SEA THIS AS—BUILT REPRESENTS A SURVEY LEVEL DATUM. MADE BY ME OR UNDER MY DIRECT 4. MEAN PAD SCALE FACTOR IS: 0.9999206 SUPERVISION AND THAT ALL 5. DATE OF SURVEY: DECEMBER 23, 2015. DIMENSIONS AND OTHER DETAILS ARE 6. REFERENCE FIELD BOOK: NS15-52, PGs. 72-74. CORRECT AS OF DECEMBER 23, 2015. LOCATED WITHIN PROTRACTED SECTION 8, T. 11 N., R. 13 E., UMIAT MERIDIAN, ALASKA WELL A.S.P. PLANT GEODETIC GEODETIC CELLAR SECTION NO. COORDINATES COORDINATES POSITION(DMS) POSITION(D.DD) BOX ELEV. OFFSETS N-31 Y=5,967,989.92 N= 2572.12 7019'13.758” 70.3204885' 43.9' 2086' FSL X= 634,412.08 E= 1000.12 148'54'36.997" 148.91027687' 4714' FEL otAwx HAONLEMAN _ CHECKED Qbp SIWVO BPS SPR+NGBERG Surveyorse DAlt:12/26/15 i DRAWING: `. -- - - J�RB15 WON 12 WOA — N PAD SHEET m as s_CORRECTED PLANT NORTHING ss SNO CAEE: _ AS—BUILT CONDUCTOR LOCATION 00 12/26115,ISSUED FOR INFORMATION NORM, 1"-250' WELL N-31 1 OF 1 NO.. DATE I REVISION R, CHI( • • North America-ALASKA BR Fuge 1 of 41 Operation Summary Report Common Well Name.N-31 AFE No Event Type:DRL-ONSHORE(DON) Start Date:1/15/2016 End Date:2/14/2016 X3-017FD-C:(7,241,748.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8:00:00PM Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. UWI:50029b0000c00 Active datum:N-31 Actual @91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (usft) 1/15/2016 00:00 - 04:30 4.50 RIGD P PRE GENERAL RIG DOWN IN PREPARATION FOR RIG MOVE -WARM UP MOVING SYSTEM -RIG DOWN INTERCONNECTS 04:30 - 08:00 3.50 MOB P PRE SEPARATE MODULES,PULL OFF WELL AND STAGE AT K-PAD ENTRANCE -HOLD PJSM WITH SECURITY FOR MOVING RIG 08:00 - 16:00 8.00 MOB P PRE MOVE RIG FROM K PAD TO N PAD ALL THREE MODULES AT ONE TIME -AVERAGE 1.3 MPH FOR 10.2 MILE MOVE DOWN K-E-G ROAD AND SPINE ROAD CRANE UTILIZED TO PULL DUMMY WELLHOUSE OFF OF K-19 AND SENT TO PARKER'S YARD IN DEADHORSE FOR RETIREMENT. NEW STYLE DUMMY WELLHOUSE WILL BE USED ON N-31. 16:00 - 22:00 6.00 MOB P PRE PERFORM PLANNED RIG MAINTENANCE AND ICI PROJECTS -STAGE ALL THREE MODULES ON SIDE OF N-PAD . -CUT HOLE IN BOP DECK DOORS FOR DIVERTER UPGRADES -WELD SUB STORAGE PEGS ON RIG FLOOR 22:00 - 00:00 2.00 MOB P PRE PREP WELLSITE -LAY ADDITIONAL RIG MATS -INSTALL SPEED HEAD AND NEW RISER CONFIGURATION ON CONDUCTOR. -OPEN WELLWORK TRANSFER PERMIT WITH PAD OPERATOR 1/16/2016 00:00 - 02:00 2.00 MOB P PRE PREP WELLSITE -INSTALL NEW RISER CONFIGURATION -INSTALL NEW DUMMY WELLHOUSE WITH LOADER(SIDEWAYS TO ACCOMODATE FUTURE INSTALLATION OF DOUBLE WORKING VALVES ON ANNULUS OUTLETS) 02:00 - 08:00 6.00 MOB P PRE SPOT ALL THREE MODULES OVER WELL N-31 -RIG MANAGER TEST ESD PRIOR TO BACKING OVER WELL -LEVEL MODULES -PLUG IN ELECTRICAL INTERCONNECTS -POST RIG MOVE MR 08:00 - 10:30 2.50 RIGU P PRE GENERAL RIG UP -RIG UP PIPESHED -INSTALL HARD LINES LINES BETWEEN MODULES -CONNECT STEAM LINES 10:30 - 12:00 1.50 RIGU P PRE RAISE DERRICK -PERFORM CHECKLIST AND PJSM -528 KLBS PU WEIGHT OFF STAND Printed 3/7/2016 9:24:47AM �. �. � . , Common Well Name:N-31 AFE No Event Type:DRL-ONSHORE(DON) Start Date:1/15/2016 End Date:2/14/2016 X3-017FD-C:(7,241,748.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No..PARKER 272 Spud Date/Time:1/17/2016 8.00:00PM Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. UWI:50029>oocxx00 Active datum:N-31 Actual @91.05usft(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 RIGU P PRE RIG UP RIG FLOOR -SKID FLOOR AND SLIDE CATTLE CHUTE INTO POSITION SET MAN RIDERS IN PLACE -INSTALL MOUSEHOLES -CLEAN AND CLEAR FLOOR SIMOPS: -INSTALL CUTTINGS BOX -COMPLETE INTERCONNECT WORK 15:00 - 18:00 3.00 RIGU P PRE BRIDLE DOWN HANG BACK BRIDLE LINES RIG UP TOP DRIVE AND BLOCKS FUNCTION TEST RIG ESD -NOV ON LOCATION TO INSTALL SWITCH GEAR FOR JOINT RIG GENERATOR AND UTILITY POWER 18:00 - 00:00 6.00 RIGU P PRE GENERAL RIG UP -RIG UP NEW DIVERTER SYSTEM WITH KNIFE VALVE AND DIVERTER LINE IN BOP DECK CHANGE SAVER SUB TO NC-50 -TAKE ON SPUD MUD INTO PITS AND TREAT -QUADCO TECH CALIBRATE PVT SENSORS -LOAD 5"DP INTO PIPE SHED 1/17/2016 00:00 - 07:00 7.00 RIGU P PRE NIPPLE UP NEW DIVERTER SYSTEM -MODIFY DIVERTER LINE BRACE180(LINE NOT LEVEL-CUT LINE HANGER TO SHORTEN) -CONNECT ACCUMULATOR LINES TO ANNULAR AND KNIFE VALVE -INSTALL HOLE FILL LINE,FLOW RISER AND FLOW LINE -GENERAL FUNCTION TEST OF DIVERTER SYSTEM -PERFORM WALK-AROUND TO ASSESS RIG READINESS SIMOPS: -MOBILIZE SMALL BHA COMPONENTS TO RIG FLOOR -RIG UP SPERRY E-LINE UNIT FOR SURFACE HOLE GYRO -PERFORM PIPE CAT MAINTENANCE 07:00 09:00 2.00 RIGU P PRE FUNCTION TEST DIVERTER ANNULAR AND KNIFE VALVE KNIFE VALVE OPENED IN 22 SECONDS DIVERTER ANNULAR CLOSED IN 29 SECONDS -PERFORM DRAWDOWN TEST ON ACCUMULATOR -TEST WITNESSED BYAOGCC REP LOU GRIMALDI ***ACCEPT RIG AT 09:00*** Printed 3/7/2016 9'24:47AM Common Well Name:N-31 AFE No Event Type:DRL-ONSHORE(DON) Start Date:1/15/2016 End Date:2/14/2016 X3-017FD-C:(7,241,748.00 Project:Prudhoe Bay Site.PB N Pad Rig Name/No..PARKER 272 Spud Date/Time:1/17/2016 8:00:00PM Rig Release:2/18/2016 Rig Contractor.PARKER DRILLING CO. UWI:50029xxxxx00 Active datum:N-31 Actual @91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 09:00 - 14:00 5.00 RIGU P PRE GESPUD PERFORM ENERAL PRRIG P EVACUATION DRILLANDAAR -DIVERTER DRILL AND WITH BURLEY'S CREW -MOVE WELLHOUSE TO ALLOW FOR MOUSEHOLE -HOLD PRE-SPUD MEETING WITH CREW -BUILD 5"HWDP STANDS -BUILD S"DP STANDS PRESSURE TEST SURFACE LINES TO 4000 PSI -CALIBRATE BLOCK HEIGHT IN AMPHION SYSTEM 14:00 - 16:30 2.50 RIGU P PRE T ' -MAKE NEW UP 12-1/4BHA"HUGHESFROM VMD-3SURFACE MILLTOOTO94MDH TRICONE BIT BAKER 8"MOTOR WITH 1.8°AKO WITH NON-PORTED FLOAT i-DIRECTIONAL/GRNSS UBHO SUB FOR GYRO 16:30 17:30 1.00 RIGU P PRE 1AT S -FILL HOLD TABLE TOPCONDUCTOR DIVERTER/RIGNDINSPECFOR EVAC LEAK DRILL WITH MALLORY'S CREW 17.30 - 19.00 1.50 RIGU P PRE CLEAN OUT CONDUCTOR FROM 94'MD TO BOTTOM AT 175'MD -WORK PIPE SEVERAL TIMES TO ENSURE FULL CLEANOUT AND NO FILL ISSUES -400 GPM,450 PSI,40 RPM,1.5K TORQUE -PU 50K,SO 50K,ROT 50K -MUD WEIGHT Tl NR/ 6.6 PPG TAKE FIRST GYRO SURVEY AT 100'SURVEY DEPTH 19:00 - 20:00 1.00 RIGU P PRE RACK BACK 1 STAND OF 5"HWDPAND PICK UP 3 NON-MAG FLEX COLLARS 20:00 - 00:00 4.00 DRILL P SURF SPUD WELL AND DIRECTIONAL DRILL 12-1/4" SURFACE HOLE FROM 175'MD TO 465'MD (290'IN 4 HRS=73 FPH WITH CONNECTIONS) -INSTANTANEOUS ROP=150 FPH -450 GPMO,540 PSI,40 RPM,1 KFT-LBS OFF BOTTOM TORQUE,2 KFT-LBS ON BOTTOM,5 KLBS WOB -PU 70K,SO 70K,ROT 70K -MW IN/OUT=8.6 PPG -GYRO SURVEY EVERY STAND AND COMPARE WITH MWD SURVEY,WIPE 30' PRIOR TO CONNECTIONS,NO BACKREAMING -510 BBL LOSSES WHILE DRILLING AHEAD, NO BROACHING OBSERVED -LEAVE FLOW PADDLE DOWN -NO RUNNING GRAVELS Printed 3/7/2016 9:24.47AM North A ' • � Operation rrm mar ep2 Common Well Name:N-31 AFE No Event Type:DRL-ONSHORE(DON) Start Date:1/15/2016 I End Date:2/14/2016 X3-017FD-C:(7,241,748.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8:00:00PM Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. UWI:50029xxxxx00 Active datum:N-31 Actual©91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 1/18/2016 00:00 - 06.00 6.00 DRILL P SURF DIRECTIONAL DRILL 12-1/4"SURFACE HOLE FROM 465 MD TO 790'MD(325'IN 6 HRS=54 FPH WITH CONNECTIONS) -INSTANTANEOUS ROP=150 FPH -550 GPM,880 PSI,50 RPM,2 KFT-LBS OFF BOTTOM TORQUE,4 KFT-LBS ON BOTTOM, 10-15 KLBS WOB PU 79K,SO 77K,ROT 78K -MW IN/OUT=8.6 PPG GYRO SURVEY EVERY STAND AND COMPARE WITH MWD SURVEY,WIPE 30' PRIOR TO CONNECTIONS,NO BACKREAMING -LOSSES SIGNIFICANTLY REDUCED AFTER DRILLING INTO CLAYS AT—550'MD,NO BROACHING OBSERVED -OBSERVE INTERMITTENT ISSUES WITH MWD PULSER SIMOPS: -BUILD STANDS OF 5"AND 4"DP OFFLINE 06:00 - 12:00 6.00 DRILL P SURF . DIRECTIONAL DRILL 12-1/4"SURFACE HOLE FROM 790'MD TO 1080'MD(290'IN 6 HRS=48 FPH WITH CONNECTIONS) -INSTANTANEOUS ROP=150 FPH 550 GPM,870 PSI,50 RPM,2 KFT-LBS OFF BOTTOM TORQUE,4 KFT-LBS ON BOTTOM, 10-15 KLBS WOB -PU 90K,SO 86K,ROT 88K MW IN/OUT=8.6 PPG GYRO SURVEY EVERY STAND AND COMPARE WITH MWD SURVEY,WIPE 30' PRIOR TO CONNECTIONS,NO BACKREAMING -MINIMAL LOSSES WHILE DRILLING AHEAD -OBSERVE INTERMITTENT ISSUES WITH MWD PULSER SIMOPS: BUILD STANDS OF 5"AND 4"DP OFFLINE Printed 3/7/2016 9:24.47AM North America ALASKA BFB 19 Operation Summaryl Report Common Well Name:N-31 AFE No Event Type:DRL-ONSHORE(DON) Start Date:1/15/2016 End Date:2/14/2016 X3-017FD-C:(7,241,748.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8:00:00PM Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. UWI:50029x0000c00 Active datum:N-31 Actual @91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 12:00 - 18:30 6.50 DRILL P SURF DIRECTIONAL DRILL 12-1/4"SURFACE HOLE FROM 790'MD TO 1359'MD(290'IN 6 HRS=48 FPH WITH CONNECTIONS) -INSTANTANEOUS ROP=150 FPH -500 GPM,790 PSI,50 RPM,2 KFT-LBS OFF BOTTOM TORQUE,4 KFT-LBS ON BOTTOM, 10-15 KLBS WOB PU 97K,SO 91 K,ROT 94K MW IN/OUT=8.6/8.7 PPG GYRO SURVEY EVERY STAND AND COMPARE WITH MWD SURVEY,WIPE 30' PRIOR TO CONNECTIONS,NO BACKREAMING -RELEASE GYRO AT 13:00 AFTER 1100' SURVEY DEPTH AND ACHIEVING 3 CLEAN MWD SURVEYS AND 1 MATCHING MWD TO GYRO SURVEY(WITHIN 1'MD,.5°INC,3°AZI) -MINIMAL LOSSES WHILE DRILLING AHEAD -INTERMITTENT ISSUES WITH MWD PULSER BECOMING MORE CONSISTANT,DISCUSS PLAN FORWARD WITH ODE,DECISION MADE TO CONTINUE TO DRILL TO BPRF AND -'CHANGE OUT MWD ON PLANNED SHORT :TRIP. MWD PULSER NOT COMMUNICATING TO SURFACE EQUIPMENT,DECISION MADE TO PULL OUT OF THE HOLE AND CHANGE OUT MWD SIMOPS: -BUILD STANDS OF 5"AND 4"DP OFFLINE -RIG CONNECT TO UTILITY POWER AT 15:00 18:30 - 19:30 1.00 DRILL P SURF CIRCULATE HOLE CLEAN WITH 2 BOTTOMS UP -MONITOR WELL FOR 10 MIN(STATIC) -500 GPM,680 PSI -50 RPM,3K TORQUE -RACK BACK 1 STAND EVERY 20 MIN WHILE CIRCUALTING BOTTOMS UP FROM BOTTOM AT 1359'MD TO 1214'MD 19:30 - 20:00 0.50 DRILL P SURF PULL OUT OF THE HOLE ON ELEVATORS FROM 1214'MD TO TOP OF BHAAT 835'MD I-MONITOR WELL FOR 10 MIN(STATIC) I-NO ISSUES WHILE PULLING THROUGH OPEN HOLE 20:00 - 23:00 3.00 DRILL N DFAL 1,358.00 SURF PULL OUT OF THE HOLE WITH BHA FROM 835'MD TO SURFACE RACK BACK HWDPAND NON-MAG FLEX COLLARS -LAY DOWN UBHO I-CHANGE OUT MWD PULSER I-INSPECT BIT:1-1-Wr-A-E-I-NO-DTF -DUMP MWD MEMORY AND CHECK FOR COMMUNICATION TO PULSER 23:00 - 23:30 0.50 DRILL P SURF I SERVICE TOPDRIVE AND RIG FLOOR EQUIPMENT 23:30 - 00:00 0.50 DRILL N DFAL 1,359.00 SURF RUN IN THE HOLE WITH BHA FROM SURFACE TO 831'MD PICK UP STAND OF NON-MAG FLEX COLLARS AND 7 STANDS OF HWDP Printed 3/7/2016 9:24:47AM 1 Common Well Name:N-31 AFE No Event Type.DRL-ONSHORE(DON) Start Date:1/15/2016 End Date:2/14/2016 X3-017FD-C:(7,241,748.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No. PARKER 272 Spud Date/Time 1/17/2016 8:00:00PM Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. UWI:50029x000a00 Active datum.N-31 Actual @91.05usft(above Mean Sea Level) Date From-To Hrs Task I Code li NPT NPT Depth Phase Description of Operations (hr) (usft) 1/19/2016 00:00 - 00:30 0.50 DRILL P SURF TRIP IN THE HOLE FROM TOP OF BHA AT 831' MD TO BOTTOM AT 1359'MD -NO ISSUES TRIPPING IN OPEN HOLE -OBSERVE 7'OF FILL ON BOTTOM 00:30 - 06:00 5.50 DRILL P SURF DIRECTIONAL DRILL 12-1/4"SURFACE HOLE FROM 1359'MD TO 1681'MD(322'IN 5.5 HRS= 59 FPH WITH CONNECTIONS) INSTANTANEOUS ROP=100-150 FPH -550 GPM,1050 PSI,50 RPM,4 KFT-LBS OFF BOTTOM TORQUE,5-7 KFT-LBS ON BOTTOM, 15-20 KLBS WOB -PU 111K,SO 91 K,ROT 99K -MW IN/OUT=8.8 PPG -SURVEY EVERY STAND,WIPE 30'PRIOR TO CONNECTIONS,NO BACKREAMING I-MINIMAL LOSSES WHILE DRILLING AHEAD SIMOPS:BUILD 4"DP STANDS OFFLINE 06:00 - 12:30 6.50 DRILL P SURF DIRECTIONAL DRILL 12-1/4"SURFACE HOLE FROM 1681'MD TO 2157'MD(476'IN 6 HRS= 79 FPH WITH CONNECTIONS) INSTANTANEOUS ROP=150 FPH -550 GPM,1090 PSI,50 RPM,4 KFT-LBS OFF I BOTTOM TORQUE,5-6 KFT-LBS ON BOTTOM, 115-20 KLBS WOB -PU 124K,SO 94K,ROT 107K -MW IN/OUT=8.8 PPG -SURVEY EVERY STAND,WIPE 30'PRIOR TO CONNECTIONS,NO BACKREAMING -MINIMAL LOSSES WHILE DRILLING AHEAD BPRF PICKED BY INCREASED ROP AT 2083' MD/2016'TVD 12:30 - 14:00 1.50 DRILL N FLUD 2,157.00 SURF TROUBLESHOOT MUD PUMP#2 DUE TO KNOCKING PULL ABOVE BPRM AND RACKBACK ONE STAND EVERY 20 MIN WHILE CIRCULATING AT 400 GPM,420 PSI -NO ISSUES DISCOVERED IN MUD PUMP. DRILL AHEAD 14:00 - 18:00 4.00 DRILL P SURF 1DIRECTIONAL DRILL 12-1/4"SURFACE HOLE FROM 2157'MD TO 2346'MD AT MIDNIGHT (189'IN 4 HRS=47 FPH WITH CONNECTIONS) -INSTANTANEOUS ROP=150 FPH 600 GPM,1100 PSI,50 RPM,5 KFT-LBS OFF BOTTOM TORQUE,7 KFT-LBS ON BOTTOM, 2-10 KLBS WOB -PU 136K,SO 96K,ROT 109K -MW IN/OUT=8.9 PPG -SURVEY EVERY STAND,WIPE 30'PRIOR TO CONNECTIONS,NO BACKREAMING -MINIMAL LOSSES WHILE DRILLING AHEAD CONTINUE TO TROUBLESHOOT MUD PUMP WHILE PERIODICALLY DRILLING AHEAD -KNOCKING STILL AN ISSUE,BUT NO PUMP ISSUES DISCOVERED -TURN ON MUD DEGASSER AND PROBLEM RESOLVED Printed 3/7/2016 9:24.47AM Page7of41 North AmericaALASKA BP ,,, Operation Summary Report= Common Well Name:N-31 AFE No Event Type:DRL-ONSHORE(DON) Start Date:1/15/2016 End Date:2/14/2016 X3-017FD-C:(7,241,748.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 , Spud Date/Time:1/17/2016 8:00:00PM Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. UWI:50029x0000c00 Active datum:N-31 Actual @91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 18:00 - 00:00 6.00 DRILL P SURF DIRECTIONAL DRILL 12-1/4"SURFACE HOLE FROM 2346'MD TO 2858'MD(512'IN 6 HRS= 85 FPH WITH CONNECTIONS) -INSTANTANEOUS ROP=150 FPH -600 GPM,1230 PSI,50 RPM,6 KFT-LBS OFF BOTTOM TORQUE,7 KFT-LBS ON BOTTOM, 5-20 KLBS WOB -PU 151K,SO 101K,ROT 120K -MW IN/OUT=8.9 PPG SURVEY EVERY STAND,WIPE 30'PRIOR TO CONNECTIONS,NO BACKREAMING I-MINIMAL LOSSES WHILE DRILLING AHEAD ACTUAL DAILY DRILLING TIME=13.2 HR (SLIDING=4.4 HR/ROTATING=8.8 HR) 1/20/2016 00:00 - 05:00 5.00 DRILL P SURF DIRECTIONAL DRILL 12-1/4"SURFACE HOLE FROM 2858'MD TO SECTION TD AT 3272'MD/ 3122'TVD(414'IN 5 HRS=83 FPH WITH 1 CONNECTIONS) -INSTANTANEOUS ROP=100-150 FPH -600 GPM,1405 PSI,50 RPM,6 KFT-LBS OFF BOTTOM TORQUE,7 KFT-LBS ON BOTTOM, 10-20 KLBS WOB -PU 160K,SO 111K,ROT 127K -MW IN/OUT=8.9/9.2 PPG -SURVEY EVERY STAND,WIPE 30'PRIOR TO CONNECTIONS,NO BACKREAMING MINIMAL LOSSES WHILE DRILLING AHEAD 1 TD SURFACE HOLE SECTION AT 3272'MD/ 3122'TVD(123'TVD IN SV3 SHALE) -PLANNED CASING SET DEPTH WITH NO PUP JOINTS=3262'MD ACTUAL DAILY DRILLING TIME=3.7 HR ROTATING 05 00 - 07:00 2.00 DRILL P SURF CIRCULATE BOTTOMS-UP 3 TIMES WHILE BACKREAMING OFF BOTTOM TO 2915'MD -600 GPM,1270 PSI -60 RPM,7K TORQUE -RACK BACK ONE STAND EVERY 20 MINUTES 07 00 - 09 30 2.50 DRILL P SURF PULL ON ELEVATORS FOR WIPER TRIP FROM 2915'MD TO 1210'MD(-100'ABOVE PREVIOUS SHORT TRIP DEPTH) -MONITOR WELL FOR 10 MIN.STATIC -TIGHT HOLE AT 1600'MD-1580'MD (BACKREAM CLEAN) 09:30 - 10:30 1.00 DRILL P SURF RUN IN HOLE ON ELEVATORS FROM 1210'MD TO 1800'MD TIGHT HOLE AT 1800'MD:WORK THROUGH PER PROGRAM,SUCCESS WITH 50 DEG TF 10:30 - 11:00 0.50 DRILL P SURF CIRCULATE BOTTOMS-UP TO CLEAN WELLBORE WHILE BACKREAMING -550 GPM,1050 PSI -40 RPM,4K TORQUE -LARGE INCREASE IN GRAVEL RETURNS WHILE CIRCULATING 11:00 - 12:30 1.50 DRILL P SURF WORK TIGHT HOLE AT 1850'MD-2000'MD -WORK THROUGH PER PROGRAM,SUCESS WITH 50 DEG TF Printed 3/7/2016 9:24:47AM North America-ALASKA Big% • ;> - Page 8 of a1 Operation Summary Report `' % . Common Well Name:N-31 AFE No Event Type:DRL-ONSHORE(DON) Start Date:1/15/2016 End Date:2/14/2016 X3-017FD-C:(7,241,748.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8:00:00PM 'Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. UWI:50029xxxxx00 Active datum:N-31 Actual©91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 12:30 - 13:00 0.50 DRILL P SURF RUN IN HOLE ON ELEVATORS FROM 2063'MD TO 3272'MD(NO ISSUES) 13:00 - 15:00 2.00 DRILL P SURF CIRCULATE BOTTOMS-UP 3 TIMES WHILE BACKREAMING OFF BOTTOM TO 2915'MD -650 GPM,1320 PSI -60 RPM,7K TORQUE -RACK BACK ONE STAND EVERY 20 MINUTES 15:00 - 16:30 1.50 DRILL P SURF PULL OUT OF HOLE ON ELEVATORS FROM ,2915'MD TO TOP OF BHAAT 831'MD(NO ISSUES) -MONITOR WELL FOR 10 MIN:STATIC 16:30 - 20:00 3.50 DRILL P SURF LAYDOWN 12-1/4"DRILLING ASSEMBLY FROM 831'TO SURFACE -.MONITOR WELL FOR 10 MIN:STATIC RACKBACK 5"HWDP FROM 831'MD TO 184' MD -12-1/4"HCC VMD-3 GRADE: 1-3-WT-G-E-1-NO-TD 20:00 - 20:30 0.50 DRILL P SURF CLEAN AND CLEAR RIG FLOOR 20:30 - 21:00 0.50 DRILL P SURF SERVICE TOP DRIVE,BLOCKS,WASH PIPE AND IBOP 21:00 - 22:00 1.00 CASING P SURF RIG UP TO RUN 9-5/8"SURFACE CASING -RIG UP VOLANT CRT,BAIL EXTENSIONS, FILL LINE AND ELEVATORS -MAKE UP 9-5/8"BTC XO TO FOSV 22:00 - 00:00 2.00 CASING P SURF RUN 9-5/8",40#,L-80,BTC CASING TO 374'MD AT MIDNIGHT -MAKE UP SHOE TRACK AND CHECK FLOATS -USE BEST-O-LIFE PIPE DOPE -TORQUE CONNECTIONS TO 9700 FT-LBS -MAKE UP JOINTS WITH VOLANT CRT -RUN 1 FLOATING CENTRALIZER ON JOINTS 1-69 -RUN IN HOLE AT 80 FT/MIN FROM SURFACE -BREAK CIRCULATION EVERY 10 JOINTS, STAGING UP TO 7 BPM FOR-5 MIN -FILL CASING ON THE FLY -OBTAIN PU/SO WEIGHTS EVERY 10 JOINTS 1-MUD WEIGHT:9.0 PPG IN,9.0 PPG OUT Printed 3/7/2016 9:24.47AM Common Well Name:N-31 AFE No Event Type:DRL-ONSHORE(DON) I Start Date:1/15/2016 End Date:2/14/2016 X3 017FD-C:(7,241,748.00) Project.Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8:00:OOPM Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. UWI.50029xxxxx00 Active datum:N-31 Actual @91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) I (usft) 1/21/2016 00:00 - 06:00 6.00 CASING P SURF RUN 9-5/8", L-80, OCT ' MD TO PLANNED SET DEPBTC APA 3262ING 'MDFROM(NO374 ISSUES) BEST-O-LIFE40#, PIPE DPE TORQUE CONNECTIONS TO 970(lc()FT-LBS -MAKEUSE UP JOINTS WITH VOLANT RT -RUN EI FLOATING CENTRALIZER N JOINTS 1-69 RUN IN HOLE AT 80 FT/MIN FROM SURFACE TO BPRF,REDUCE SPEED TO 5R FT/MIN FROM BPRF TO TD 1-AVERAGE 13 JTS/HR WITH CIRCULATING 1(AFTER SHOE-TRACK) BREAK CIRCULATION EVERY 10 JOINTS, STAGING UP TO 7 BPM FOR 5 MIN FILL CASING ON THE FLY -OBTAIN PU/SO WEIGHTS EVERY 10 JOINTS ,-PU 160K,SO 105KAT SET DEPTH LANDED WEIGHT:70K(PARKER 272 BLOCK WT 35K) --W:1-4U1 MUD WEIGHT.9.1 PPG IN,9.1 PPG OUT MUD LOSSES WHILE RIH:26 BBL SIMOPS:RIG UP SLB CEMENTERS AND STAGE TRUCKS 06:00 - 09:00 3.00 CASING P SURF ABOOMS CONDITIONINGCIRCULMUD PRIORUP TO CE STAGE OUT IN5 0.5TTBPM INCREMENTS TO 7MENTING BPM CEMENTING RATE CONDITION MUD TO 9.1 PPG, WHILE 17 YP -INL PRESSUREA AT CEMENTG RATE 255 ITIAPSI -FINAL PRESSURE T CEMENTING INRATE : AFTER MUD CONDITIONED:145 PSI RECIPROCATED PIPE 15 FT AT SURFACE AT 1000 FPH MOPT LO. 250 PSSI UL: LOW/4000 PRESSURE PSI HIGHTEST CEMENFOR 5 MINUTESINEST BSIATCH UP 10 PPG MEP UDPUSH. Printed 3/7/2016 9:24:47AM 4 Common Well Name:N-31 AFE No Event Type:DRL-ONSHORE(DON) Start Date:1/15/2016 End Date:2/14/2016 X3-017FD-C:(7,241,748.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No..PARKER 272 Spud Date/Time.1/17/2016 8.00.O0PM Rig Release:2/18/2016 Rig Contractor PARKER DRILLING CO. UWI:50029)oocxx00 Active datum.N-31 Actual @91.05usft(above Mean Sea Level) Date 1 From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 09:00 - 13.30 4.50 CEMT P SURF CEMENT 9-5/8"SURFACE CASING AS FOLLOWS: -HOLD PJSM -PUMP 100 BBLS OF 10 PPG MUDPUSH II SPACER AT 6 BPM,115 PSI -RELEASE BOTTOM PLUG -PUMP 540 BBLS OF 11 PPG LITECRETE LEAD CEMENT AT 6 BPM,EXCESS VOLUME 300%IN PERMAFROST(YIELD 1.91 CU.FT/SK) ACTUAL PERMAFROST EXCESS=240% BASED ON CEMENT BACK TO SURFACE. -OBSERVE BOTTOM PLUG LAND AT 234 BBL INTO PUMPING LEAD(BURST AT 600 PSI DIFFERENTIALAFTER 17 BBLS COMPRESSION) -PUMP 48 BBLS(INCLUDES 2 BBL FOR SURFACE LINES)OF 15.8 PPG CLASS G TAIL AT 6 BPM,EXCESS VOLUME 40%(YIELD 1.17 CU.FT/SK) -DROP TOP PLUG -RECIPROCATE PIPE 15 FT AT 1000 FPH UNTIL PUMPING TAIL CEMENT DUE TO INCREASING OVERPULL AND DRAG 1-LAND HANGER ON RING WHEN MUDPUSH AND LEAD AT SHOE -PUMP 10 BBL FRESH WATER FROM SLB PERFORM DISPLACEMENT WITH RIG PUMPS AND 9.1 PPG LSND MUD PER SLB CADE 220 BBLS DISPLACED AT 7 BPM.ICP 200 PSI 6%RETURN FLOW,FCP 800 PSI 7%RETURN FLOW -REDUCE RATE TO 2 BPM PRIOR TO PLUG BUMP:FINAL CIRCULATING PRESSURE 580 PSI -BUMP PLUG AND INCREASE PRESSURE TO 1280 PSI,CHECK FLOATS-GOOD -TOTAL DISPLACEMENT VOLUME 241 BBLS WHICH CALCULATES OUT TO 97% EFFICIENCY -ESTIMATED CEMENT RETURNS TO SURFACE:53 BBLS(11 PPG DENSITY CONFIRMED) -LOST 23 BBLS WHILE RUNNING CASING,26 BBLS BEFORE CEMENT ROUNDED CORNER, 51 BBLS AFTER CEMENT WENT AROUND THE CORNER. TOTAL LOSSES 100 BBLS. -CEMENT IN PLACE:13:10,500 PSI COMPRESSIVE STRENTH AT 05:10 HOURS ON 1/22/2016 13:30 - 14:30 1.00 CEMT P SURF 1RIG DOWN VOLANT TOOLS,BLOW DOWN SURFACE LINES. 14:30 - 16:00 1.50 CEMT P SURF DRAIN CEMENT FROM BACKSIDE OF LANDING JOINT,SUCK OUT CELLAR -BREAK AND LAY DOWN LANDING JOINT IN TWO SECTIONS -RIG DOWN CASING HANDLING EQUIPMENT AND TOOLS 16:00 - 18:00 2.00 CEMT P SURF MAKE UP STACK JETTING TOOL,FLUSH DIVERTER AND RISER WITH WATER/SAP -RIG DOWN JETTING TOOL,CLEAN OUT FLOW BOX Printed 3/7/2016 9:24:47AM • , • ,,,,,,i72;25-t,,,,, m:),0%co/e.,%44t,' p 11 f 41 North America-ALASKA- yAK:Aw.400 :1VV"i!;7'''z, age /A4VW).':04**,'"'"I'410 ;''/:4// / Operation'Summary Report ow/4 egow-x- /44itiat Common Well Name:N-31 AFE No Event Type:DRL-ONSHORE(DON) I Start Date:1/15/2016 End Date:2/14/2016 ,X3-017FD-C:(7,241,748.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8.00:00PM Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. 50029)ocooc00 Active datum:N-31 Actual(g91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 18:00 - 18:30 0.50 BOPSUR P SURF PERFORM RIG SERVICE ON DRAVVVVORKS 18:30 - 00:00 5.50 DIVRTR P SURF NIPPLE DOWN DIVERTER SYSTEM -PERFORM PRE-JOB SAFETY MEETING COVERING JSA -WALK DOWN NIPPLE DOWN PROCEDURES WITH RIG CREW AT DIVERTER AND BOP DECK -NOTIFY DRILL SITE OPERATOR AND 'DISCUSS DIVERTER RIG DOWN OPERATION -PULL FLOW BOX RISER,LAY DOWN DIVERTER LINES -PULL MOUSE HOLE,OFFLOAD PITS -SIMOPS:CHANGE OIL IN DRAVVWORKS, AND PERFORM MAINTENANCE ON TOP DRIVE 1/22/2016 00:00 - 05:30 5.50 BOPSUR P SURF HOLD PRE-JOB SAFETY MEETING AFTER DETAILED CHANGE OUT -NIPPLE DOWN DIVERTER SYSTEM -REMOVE KNIFE VALVE AND TURN TO ENABLE SURFACE ANNULAR TO BE INSTALLED AND REMOVED -NIPPLE DOWN KNIFE TEE,RISER SPOOLS, ..LAY DOWN SIMOPS: I-CHANGE OUT SAVER SUB -CLEAN PITS 05:30 - 09:00 3.50 WHSUR P I SURF NIPPLE UP FMC GEN 5 WELLHEAD I-ORIENT WELLHEAD VALVES PARALLEL TO WELL ROW PER WOA -INSTALL RISERS AND DOUBLE STUDDED ADAPTER INSTALL BOP STACK,TORQUE ALL CONNECTIONS MAKE UP XT-39 VALVE ASSEMBLY,INSTALL MOUSE HOLE 09:00 - 09:30 0.50 WHSUR P SURF PRESSURE TEST WELLHEAD 70250 PSI LOW,1000 PSI HIGH PER FMC -PERFORM PRESSURE CROSS CHECK BEFORE TEST 09:30 - 15:00 5.50 BOPSUR P SURF !NIPPLE UP BOP EQUIPMENT -INSTALL FLOW RISER MAKE UP 7"TEST JOINT,RUN TEST PLUG AND INSTALL -INSTALL SECONDARY VALVES ON OAAND IA,MAKE UP 4"VALVE ASSEMBLY I-PRESSURE UP KOOMEY,GREASE MANUALS AND HCR ON STACK -TORQUE UP TUBING SPOOL 13-5/8"5K SHAFFER STACK: -ANNULAR PREVENTER -7"FIXED BORE UPPER RAM -BLIND/SHEAR RAM -MUD CROSS -2-7/8"X 5-1/2"LOWER VBR 15:00 - 16:30 1.50 BOPSUR N SFAL SURF FILL STACK,BLEED AIR FROM SYSTEM -SHELL TEST BOP STACK,DOOR SEAL FAILURE ON OFF-DRILLERS SIDE BLIND SHEAR RAM -CHANGE OUT SEAL,TEST-PASS Printed 3/7/2016 924 47AM q F/' •a•..'" 5eo,,Z . AFE No Common Well Name:N-31 Event Type:DRL-ONSHORE(DON) 1, Start Date:1/15/2016 End Date:2/14/2016 X3-017FD-C:(7,241,748.00) Project.Prudhoe Bay 1 Site:PB N Pad Rig Name/No.:PARKER 272 1 Spud Date/Time:1/17/2016 8:00:OOPM Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. UWI:50029xxxxx00 Active datum:N-31 Actual @91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 16:30 - 00:00 7.50 BOPSUR P SURF TEST BOPE TO 250 PSI LOW/3500 PSI HIGH FOR 5 MIN CHARTED MINUTES EACH WITH 4" AND 7"TEST JOINTS -TEST RAM LOCKS -FAIL-PASS ON KILL HCR AND CHOKE 13 (GREASE AND RE-TEST) -TEST GAS AND PVT ALARMS '-SEE ATTACHED BOP TEST CHARTS 1-TESTS WITNESS WAIVED BYAOGCC REP JOHNNIE HILL 1/23/2016 00:00 - 03:00 3.00 BOPSUR P SURF CONTINUE TO TEST BOPE TO 250 PSI LOW/ 3500 PSI HIGH FOR 5 MIN CHARTED MINUTES EACH WITH 4"AND 7"TEST JOINTS -TEST RAM LOCKS -CONDUCT DRAW DOWN TEST ON ACCUMULATOR -SEE ATTACHED BOP TEST CHARTS -TESTS WITNESS WAIVED BY AOGCC REP JOHNNIE HILL 03:00 - 04:00 1.00 BOPSUR P SURF INSTALL WEAR RING -PULL AND LAY DOWN TEST PLUG -PICK UP AND RUN IN WEAR RING(ID=10") -RUN IN LOCK DOWN SCREWS AND TORQUE GLAND NUTS 04:00 - 05:30 1.50 CASING P I SURF PRESSURE TEST 9 5/8"SURFACE CASING TO 250 PSI LOW FOR 5 MIN,3500 PSI HIGH FOR 130 CHARTED MIN LOST 16 PSI FIRST 15 MIN,LOST 7 PSI SECOND 15 MIN(PASS PER BP CRITERIA) -BBL IN/OUT=4.1 BBL -TEST APPROVED BY WELLS SUPT.(SEE ATTACHED CHART) 05:30 - 09:00 3.50 DRILL P 1 I SURF MAKE UP 8-3/4"RSS INTERMEDIATE DRILLING BHA TO 904'MD -PJSM FOR MU BHA -MAKE UP REBUILD 8-3/4"SEC MMD65C PDC BIT -AUTOTRAK RSS,PORTED FLOAT -GR/RES/PWD/DIR WITH NEAR-BIT GR, COPILOT -GHOST REAMER RUN AT 3273'BEHIND BIT SIMOPS:CIRCULATE 150 BBL AT 15 BPM THROUGH BLEEDER TO ENSURE SUMPS AND SUCTION LINES CLEAN 09:00 - 12:00 3.00 DRILL P SURF TRIP IN HOLE WITH 8-3/4"DRILLING ASSEMBLY FROM BHA AT 904'MD TO 2988' MD -FILL PIPE AND SHALLOW HOLE TEST AT 500 GPM WITH 960 PSI(PASS) -PERFORM UNANNOUNCED KWT DRILL AND AAR WITH YEAROUT CREW 12:00 - 14:00 2.00 ' DRILL P SURF CUT AND SLIP 70'OF DRILL LINE. SERVICE TOP DRIVE,WASH PIPE,BLOCKS CALIBRATE BLOCK HEIGHT WITH BAKER AND IN AMPHION Printed 3/7/2016 9:24:47AM 9WekkUelfM • North America ALASKA BP' . Page 13 of 41 Operation Summary"Report Common Well Name:N-31 AFE No Event Type:DRL-ONSHORE(DON) Start Date:1/15/2016 End Date:2/14/2016 X3-017FD-C:(7,241,748.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8:00:00PM 1 Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. I UWI:50029xmooc00 Active datum:N-31 Actual @91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 14:00 - 16:30 2.50 DRILL P SURF CLEAN OUT SHOE TRACK AS FOLLOWS: WASH DOWN WITH 8-3/4"DRILLING ASSEMBLY FROM 2,988'MD TO TAG CEMENT STRINGERS AT 3,125'MD(47'ABOVE FLOAT COLLAR) -DRILL UP CEMENT TO PLUG AT 3,172'MD (ON DEPTH);400 GPM,1200 PSI,60 RPM 5KFT-LBS TORQUE,WOB 8KLBS DRILL CEMENT IN SHOE TRACK TO 3252'MD (10'ABOVE SHOE AT 3262'MD) NOTE: BEGIN TO DISPLACE ON THE FLY WITH 9.5 PPG LSND AT 30'FROM SHOE 16:30 - 17:00 0.50 DRILL P SURF COMPLETE DISPLACEMENT TO 9.5PPG LSND. 400-600 GPM,900-1400 PSI,RECIPROCATE FULL STAND,120 TPM,S KFT-LBS TORQUE -RECORD NEW SLOW CIRCULATING RATES AFTER NEW MUD AROUND 17:00 - 19:00 2.00 DRILL P SURF DRILL UP SHOE TRACK,10'RATHOLE AND 20' OF NEW FORMATION FROM 3.252'MD TO 3,292'MD 450 GPM WITH 1200 PSI,50-120 RPM WITH 4K TORQUE,WOB 8K MW IN/OUT= 9.5 PPG 19:00 - 19:30 0.50 DRILL P SURF PULL UP INTO 9-5/8"SHOE. CIRCULATE HOLE CLEAN AND FOR EVEN MUD WEIGHT IN/OUT -600 GPM,1875 PSI,NO RECIPROCATION,NO ROTATION 19:30 - 21:30 2.00 DRILL P SURF PERFORM LOT TEST TO 14.7 PPG EQUIVALENT MUD WEIGHT(EMW) -MUD WEIGHT 9.5 PPG,3,113'TVD -PUMP 2.7 BBLS TO 850 PSI,BLEED BACK 2.5 BBLS -CONSULT WITH ODE AND OBTAIN PERMISSION TO PROCEED FROM WELLS SUPT(SEE ATTACHED CHART) 21 30 - 00:00 2.50 DRILL P INTI DIRECTIONALLY DRILL 8-3/4"INTERMEDIATE FROM 3,292'MD TO 3,371'MD,3,213'TVD AT MIDNIGHT -PUMP AT 550 GPM WITH 1690 PSI,ROTATE AT 130 RPM WITH 4-6K TORQUE,WOB 5-10K SURVEY EVERY CONNECTION -MUD WEIGHT IN AND OUT 9.5 PPG 1/24/2016 00:00 - 06:00 6.00 DRILL P INTI DIRECTIONAL DRILL 8-3/4"INT HOLE SECTION FROM 3371'MD TO 3945'MD(574'IN 6 HOURS=96 FPH WITH CONNECTIONS). (-200-220 FPH INSTANTANEOUS ROP -550 GPM(1750-1900 PSI)TO 600 GPM (2150-2250 PSI),5-10 KLBS WOB,150 RPM,4-7 KFT-LBS TORQUE -NO LOSSES TO FORMATION -MW IN/OUT=9.5 PPG -CALCULATED CLEANHOLE ECD=10.0 PPG, ACTUAL=10-10.4 PPG -NO BACKREAMING,SURVEY EACH CONNECTION Printed 3/7/2016 9.24:47AM • North America-ALASKA-BP • -r Page 14 of 41 ,;. Operation Summary Report 2z Common Well Name:N-31 AFE No Event Type:DRL-ONSHORE(DON) Start Date:1/15/2016 End Date:2/14/2016 X3-017FD-C:(7,241,748.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8:00:00PM Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. UWI:50029r0000c00 Active datum:N-31 Actual @91.05usft(above Mean Sea Level) Date From-To I Hrs Task Code I NPT NPT Depth Phase Description of Operations (hr) (usft) 06:00 - 12:00 6.00 DRILL P i INTI DIRECTIONAL DRILL 8-3/4"INT HOLE SECTION FROM 3945'MD TO 4443'MD(498'IN 6 HOURS=83 FPH WITH CONNECTIONS). -25-220 FPH INSTANTANEOUS ROP -600 GPM(2280-2400 PSI),5-10 KLBS WOB, 150 RPM,4-7 KFT-LBS TORQUE -NO LOSSES TO FORMATION MW IN/OUT=9.5 PPG -CALCULATED CLEANHOLE ECD=10.0 PPG, ACTUAL=10.3-10.4 PPG -NO BACKREAMING,SURVEY EACH CONNECTION 12:00 - 18:00 6.00 DRILL P INTI DIRECTIONAL DRILL 8-3/4"INTERMEDIATE HOLE SECTION FROM 4,443'MD TO 4,886'MD (443'IN 6 HOURS=74 FPH WITH CONNECTIONS). -25-220 FPH INSTANTANEOUS ROP 600 GPM,2600 PSI,5-15 KLBS WOB,150 RPM,4-8 KFT-LBS TORQUE -NO LOSSES TO FORMATION -MW IN/OUT=9.5 PPG -CALCULATED CLEANHOLE ECD=10.0 PPG, ACTUAL=10.17 PPG NO BACKREAMING,SURVEY EACH CONNECTION 18:00 - 18:30 0.50 DRILL P INT SERVICE TOP DRIVE,GREASE BLOCKS AND WASH PIPE 18:30 - 00:00 5.50 DRILL P INTI DIRECTIONAL DRILL 8-3/4"INTERMEDIATE HOLE SECTION FROM 4,886'MD TO 5,321'MD, 4,992'TVD(435'IN 5.5 HOURS=79 FPH WITH CONNECTIONS). -25-225 FPH INSTANTANEOUS ROP -600 GPM,2775 PSI,5-15 KLBS WOB,150 RPM,4-8 KFT-LBS TORQUE -NO LOSSES TO FORMATION -MW IN/OUT=9.5 PPG -CALCULATED CLEANHOLE ECD=10.0 PPG, ACTUAL=10.17 PPG -NO BACKREAMING,SURVEY EACH CONNECTION -ACTUAL DRILLING TIME 18 HOURS -SIGNS OF HARD STREAKS AND/OR BIT BALLING ALL DAY LONG -REGULARLY PICK UP AND RE-SET BIT WITH DECENT SUCCESS -PUMP SEVERAL BIT BALLING SWEEPS WITH 5 PPB NUTPLUG AND DRILL-N-SLIDE SWEEPS WITHOUT SUCCESS -VARY RPM FROM 120 TO 180 Printed 3/7/2016 9:24:47AM •/, • North America-ALASKA-BP Page 15 of 41 perati on Summary Report Common Well Name:N-31 AFE No Event Type:DRL-ONSHORE(DON) Start Date:1/15/2016 End Date:2/14/2016 X3-017FD-C:(7,241,748.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8:00:00PM Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. UW:50029r0000c00 Active datum:N-31 Actual @91.05usft(above Mean Sea Level) Date From-To Hrs Task Code 1 NPT NPT Depth Phase Description of Operations (hr) 1 (usft) 1/25/2016 00:00 - 06:00 6.00 DRILL P INTI DIRECTIONAL DRILL 8-3/4"INTERMEDIATE HOLE SECTION FROM 5,321'MD TO 5,830'MD, 5,456'TVD(509'IN 6 HOURS=85 FPH WITH CONNECTIONS). -600 GPM,2795 PSI,10-15 KLBS WOB,170 RPM,6-10 KFT-LBS TORQUE -NO LOSSES TO FORMATION MW IN/OUT=9.5 PPG CALCULATED CLEANHOLE ECD=10.0 PPG, ACTUAL=10.30 PPG NO BACKREAMING,SURVEY EACH 1 CONNECTION PUMPED 35 BBL HI-VIS SWEEP AT 5,359'MD, I MINIMAL INCREASE IN CUTTINGS BUILT 40 STANDS 4"DRILL PIPE OFFLINE, 1 ALL PIPE PICKED UP FOR WELL 06:00 - 12:00 6.00 DRILL P INTI 1DIRECTIONAL DRILL 8-3/4"INTERMEDIATE HOLE SECTION FROM 5,830'MD TO 6,465'MD, 6,035'TVD(635'IN 6 HOURS=106 FPH WITH CONNECTIONS). 600 GPM,3475 PSI,6-14 KLBS WOB,170 RPM,7-9 KFT-LBS TORQUE -NO LOSSES TO FORMATION MW IN/OUT=10.2 PPG I-CALCULATED CLEANHOLE ECD=10.5 PPG, ACTUAL=11.22 PPG '-NO BACKREAMING,SURVEY EACH CONNECTION WEIGHTING UP SYSTEM TO 10.4 PPG -PUMPED HI-VIS SWEEP AT 5,928'MD,50% INCREASE IN CUTTINGS 12:00 - 18:30 6.50 DRILL P INTI DIRECTIONAL DRILL 8-3/4"INTERMEDIATE HOLE SECTION FROM 6,465'MD TO 6,875'MD, 6,405'TVD(410'IN 6.5 HOURS=63 FPH WITH CONNECTIONS). -550 GPM,3220 PSI,6-8 KLBS WOB,170 RPM, 8-10 KFT-LBS TORQUE -NO LOSSES TO FORMATION -MW IN/OUT=10.4 PPG,WEIGHTED UP FROM 9.5 PPG TO 10.4 PPG FOR TOP OF CM2 WITH BULK BARITE -CALCULATED CLEANHOLE ECD=10.98 PPG, ACTUAL=11.37 PPG -NO BACKREAMING,SURVEY EACH CONNECTION -WEIGHTED UP SYSTEM TO 10.4 PPG -ADD BLACK PRODUCTS WITH 400 BBL SPIKE FLUID DILUTION -CUT FLOW RATE TO 550 GPM FOR ECD MANAGEMENT 18:30 - 19:00 0.50 DRILL P INTI GREASE TOP DRIVE,BLOCKS,WASH PIPE AND FLOOR EQUIPMENT Printed 3/7/2016 9:24:47AM g Common Well Name:N-31 AFE No Event Type:DRL-ONSHORE(DON) Start Date:1/15/2016 End Date:2/14/2016 X3-017FD-C:(7,241,748.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8:00:00PM Rig Release.2/18/2016 Rig Contractor:PARKER DRILLING CO. UWI:50029xxxxx00 Active datum:N-31 Actual t91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 19:00 - 00:00 5.00 DRILL P INTI DIRECTIONAL DRILL 8-3/4"INTERMEDIATE HOLE SECTION FROM 6,875'MD TO 7,157'MD, 6,661'TVD(282'IN 5 HOURS=56 FPH WITH CONNECTIONS). 550 GPM,3240 PSI,8-13 KLBS WOB,180 RPM,7-8 KFT-LBS TORQUE -NO LOSSES TO FORMATION MW IN/OUT=10.4 PPG -CALCULATED CLEANHOLE ECD=10.98 PPG, ACTUAL=11.37 PPG -NO BACKREAMING,SURVEY EACH CONNECTION ACTUAL DRILLING TIME 19 HOURS -PUMPED DRILL-N-SLIDE/WALNUT SWEEP WITH MODERATE CUTTINGS INCREASE OF 15% 1/26/2016 00:00 - 07:00 7.00 DRILL P INTI DIRECTIONAL DRILL 8-3/4"INTERMEDIATE HOLE SECTION FROM 7,157'MD TO 7,387' MD(230'IN 7 HOURS=33 FPH WITH CONNECTIONS). -550 GPM,3480 PSI,15 KLBS WOB,120-180 RPM,6 KFT-LBS TORQUE -NO LOSSES TO FORMATION -MW IN/OUT=10.4 PPG CALCULATED CLEANHOLE ECD=10.98 PPG, ACTUAL=11.29 PPG -NO BACKREAMING,SURVEY EACH CONNECTION -SLOW DRILLING,TRY DIFFERENT PARAMETERS WITH WOB,RPM AND FLOW RATE PUMP DRILL-N-SLIDE/WALNUT SWEEP WITH NO INCREASE IN CUTTINGS OR CHANGE IN PARAMETERS PULLING OUT OF HOLE FOR BIT CHANGE 07:00 - 09:30 2.50 DRILL N DFAL 7,387.00 INTI BACKREAM FROM 7,387'MD TO 7,249'MD MONITOR WELL FOR 10 MINUTES-STATIC PUMP AT 550 GPM WITH 3350 PSI,ROTATE AT 120 RPM WITH 7K TORQUE PULL ON ELEVATORS FROM 7,249'MD TO 5,777'MD,TIGHT HOLE -MONITOR WELL FOR 10 MINUTES-STATIC -RUN IN3STANDS TO6,117'MDTO CIRCULATE 09:30 - 10:30 1.00 DRILL N DFAL 7,387.00 INTI CIRCULATE BOTTOMS UP PLUS -PUMP AT 550 GPM WITH 3050 PSI -ROTATE AT 120 RPM WITH 6K TORQUE -RECIPROCATE FULL STAND AT 1000 FOOT PER HOUR 10:30 - 13:00 2.50 DRILL N DFAL 7,387.00 INTI PULL OUT OF HOLE FROM 6,117'MD TO 5,777' MD -ENCOUNTER TIGHT HOLE.DROP DOWN TO 5,833'MD -BACKREAM FROM 5,833'MD TO 5,070'MD -MONITOR WELL AT 5,264'MD-STATIC -BACKREAM FROM 700-1000 FOOT PER HOUR -PUMP AT 550 GPM WITH 2900 PSI -ROTATE AT 120 RPM WITH 2-12K TORQUE Printed 3/7/2016 9:24:47AM • North America-ALASKA-BP 110 Page 17 of 41 , ,'' �,,� ��tnary Common Well Name:N-31AFE No Event Type:DRL-ONSHORE(DON) Start Date:1/15/2016 I End Date:2/14/2016 X3-017FD-C:(7,241,748.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8:00:00PM Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. UWI:50029xxxxx00 Active datum:N-31 Actual @91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 13:00 - 16:00 3.00 DRILL N DFAL 7,387.00 INTI PULL OUT OF HOLE ON ELEVATORS FROM 5,070'MD TO 9-5/8"SHOE AT 3,262'MD -TIGHT SPOTS AT 4,560,4,370 AND 4,230', WIPE CLEAN -MONITOR WELL AT SHOE FOR 10 MINUTES- STATIC -PULL OUT OF HOLE TO BHA AT 903'MD MONITOR WELL FOR 10 MINUTES-STATIC 16:00 - 18:00 2.00 DRILL N DFAL 7,387.00+ INTI CHANGE OUT HANDLING EQUIPMENT FOR 5' -PULL AND RACK BACK 5"HWDP AND 1 STAND OF DRILL COLLARS 18:00 - 18:30 0.50 DRILL N DFAL 7,387.00 INTI GREASE FLOOR EQUIPMENT 18:30 - 19:30 1.00 DRILL N DFAL 7,387.00 INTI CHANGE OUT 8-3/4"BIT -GRADE BIT 3-5-BT-A-X-I-WT-PR -BIT COVERED IN CLAY BUT NOT HARD BALLED UP,ONE COURSE SLICK INDICATING POSSIBILITY THAT DRILL-N-SLIDE SWEEPS WERE EFFECTIVE IN KEEPING BIT FROM BALLING DOWNLOAD DATA FROM MWD 19:30 - 20:00 0.50 DRILL N DFAL 7,387.00 INTI RUN IN HOLE WITH 8-3/4"DRILLING ASSEMBLY TO 903' RUN IN 1 STAND DRILL COLLARS AND 8 STANDS HWDP CHANGE OUT HANDLING EQUIPMENT FOR 14„ -SHALLOW HOLE TEST MWD AT 935'MD AT 550 GPM WITH 1300 PSI 20:00 - 00:00 . 4.00 DRILL N. DFAL 7,387.00 INTI RUN IN HOLE WITH 8-3/4"DRILLING ASSEMBLY FROM 935'MD TO 6,591'MD INSTALL PS-21'S AT SHOE,BREAK CIRCULATION EVERY 2,400' -PICK UP GHOST REAMER 2,000'BACK FROM BIT -STARTED TO LOOSE FLUID AT 5,170'MD IN • UG1 -SLOW DOWN RUNNING SPEED FROM 80 FPM TO 40 FPM TO PREVENT PUSHING FLUID AWAY 1/27/2016 00:00 - 01:30 1.50 DRILL N DFAL 7,387.00 INTI RUN IN HOLE WITH 8-3/4"DRILLING ASSEMBLY FROM 6,591'MD TO 7,349'MD AT 40 FPM -LOSSES STOPPED AT 40 FPM,TOTAL LOSSES ON TRIP IN HOLE 32 BBLS -WASH DOWN FROM 7,349'MD TO 7,387'MD -WASH AT 550 GPM WITH 3475 PSI -ROTATE AT 80 RPM WITH 7-8K TORQUE -NO FILL ON BOTTOM 01:30 - 02:30 1.00 DRILL P INTI DIRECTIONALLY DRILL FROM 7,387'MD TO 7,442'MD(55'IN 1 HOUR=55 FPH WITH CONNECTIONS) -PUMP AT 550 GPM WITH 3525 PSI -ROTATE AT 120 RPM WITH 8-10K TORQUE, WOB 10K - MW IN/OUT=10.4 PPG -CALCULATED CLEANHOLE ECD=10.95 PPG, ACTUAL=11.33 PPG -NO BACKREAMING,SURVEY EACH CONNECTION -LOSING 24-30 BPH 02:30 - 03:00 0.50 DRILL P INTI FLOW CHECK WELL-STATIC Printed 3/7/2016 9:24:47AM North America ALASKA BPS Page 18 of 41 Operation Summary Report` Common Well Name:N-31 AFE No Event Type:DRL-ONSHORE(DON) Start Date:1/15/2016 End Date:2/14/2016 X3-017FD-C:(7,241,748.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8:00:00PM Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. UW:50029xroocc00 Active datum:N-31 Actual @91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 03:00 - 06:00 3.00 DRILL P INTI DIRECTIONALLY DRILL FROM 7,442'MD TO 7,632'MD(190'IN 3 HOURS=63 FPH WITH CONNECTIONS) -PUMP AT 550 GPM WITH 3530 PSI -ROTATE AT 120 RPM WITH 8-9K TORQUE, WOB 11K - MW IN/OUT=10.4 PPG I-CALCULATED CLEANHOLE ECD=10.95 PPG, ACTUAL=11.31 PPG NO BACKREAMING,SURVEY EACH CONNECTION 1-LOSING 10-15 BPH 1-FLOW CHECK ON CONNECTIONS PUMPED DRILL AHEAD LCM PILL THAT CUT LOSSES FROM 24-30 BPH TO 10-15 BPH, LOWERED TORQUE AND INCREASED ROP 06:00 - 12:00 6.00 DRILL P INT1 DIRECTIONALLY DRILL FROM 7,632'MD TO 8,010'MD(378'IN 6 HOURS=63 FPH WITH CONNECTIONS) -PUMP AT 550 GPM WITH 3670 PSI -ROTATE AT 180 RPM WITH 8K TORQUE, WOB 9-13K -MW IN/OUT=10.4 PPG CALCULATED CLEANHOLE ECD=10.95 PPG, ACTUAL=11.5 PPG -BACKREAM 15'PRIOR TO CONNECTIONS FOR ECD MANAGEMENT,SURVEY EACH CONNECTION -LOSING 10-15 BPH -FLOW CHECK ON CONNECTIONS -PUMPED HI-VIS SWEEP AT 7,824'MD WITH 25%INCREASE IN CUTTINGS. 12:00 - 18:00 6.00 DRILL P INTI DIRECTIONALLY DRILL FROM 8,010'MD TO 8,388'MD(378'IN 6 HOURS=63 FPH WITH CONNECTIONS) -PUMP AT 550 GPM WITH 3740 PSI -ROTATE AT 120 RPM WITH 7-10K TORQUE, WOB 15K - MW IN/OUT=10.4 PPG -CALCULATED CLEANHOLE ECD=10.95 PPG, ACTUAL=11.30 PPG -BACKREAM 15'PRIOR TO CONNECTIONS FOR ECD MANAGEMENT,SURVEY EACH CONNECTION -LOSING 10-15 BPH -FLOW CHECK ON CONNECTIONS 18:00 - 18:30 0.50 DRILL P INTI RIG SERVICE,GREASE TOP DRIVE,BLOCKS AND WASH PIPE Printed 3/7/2016 9:24:47AM 4111 •North America-ALASKA-BP s Operation Summary Report Common Well Name:N-31 AFE No Event Type:DRL-ONSHORE(DON) Start Date:1/15/2016 End Date:2/14/2016 X3-017FD-C:(7,241,748.00) 1 Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8:00:00PM 'Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. UWI:50029xxxxx00 Active datum:N-31 Actual @91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 18:30 - 00:00 5.50 DRILL P INTI DIRECTIONALLY DRILL FROM 8,388'MD TO 8,750'MD(362'IN 5.5 HOURS=66 FPH WITH CONNECTIONS) -PUMP AT 500 GPM WITH 3755 PSI -ROTATE AT 100 RPM WITH 8-11K TORQUE, WOB 15K MW IN/OUT=10.4 PPG CALCULATED CLEANHOLE ECD=10.95 PPG, ACTUAL=11.30 PPG BACKREAM 15'PRIOR TO CONNECTIONS FOR ECD MANAGEMENT,SURVEY EACH CONNECTION -LOSING 5 BPH FLOW CHECK ON CONNECTIONS ACTUAL DRILLING HOURS 15.6 -PUMPED Hl-VIS SWEEP AT 8,392'MD WITH 50%INCREASE IN CUTTINGS 1/28/2016 00:00 - 09:30 9.50 DRILL P INTI DIRECTIONALLY DRILL FROM 8,750'MD TO 9,287'MD(537'IN 9.5 HOURS=55 FPH WITH CONNECTIONS) -PUMP AT 550 GPM WITH 3790 PSI ROTATE AT 120 RPM WITH 10-12K TORQUE, WOB 10-15K MW IN/OUT=10.4 PPG -CALCULATED CLEANHOLE ECD=10.95 PPG, ACTUAL=11.2 PPG I-NO BACKREAMING ON CONNECTIONS, SURVEY EACH CONNECTION I-LOSSES AT 5 BPH FLOW CHECK ON CONNECTIONS -PUMPED HI-VIS SWEEP AT 8,865'MD WITH 1100%INCREASE IN CUTTINGS OBSERVE REVERSE DRILLING BREAK START BOTTOMS UP CIRCULATION 09:30 - 10:30 1.00 DRILL P INTI CIRCULATE HI-VIS SWEEP SURFACE TO SURFACE AT 550 GPM WITH 3600 PSI -ROTATE AT 120 RPM WITH 9K TORQUE -INCREASE OF 50%IN CUTTINGS 10.30 - 11:30 1.00 DRILL P INTI DIRECTIONALLY DRILL FROM 9,287'MD TO 9,351'MD(64'IN 1.0 HOURS=64 FPH WITH CONNECTIONS) -PUMP AT 550 GPM WITH 3620 PSI -ROTATE AT 120 RPM WITH 10-13K TORQUE, WOB 10K - MW IN/OUT=10.4 PPG 1-CALCULATED CLEANHOLE ECD=10.95 PPG, I ACTUAL=11.03 PPG I-NO BACKREAMING ON CONNECTIONS, 1 SURVEY EACH CONNECTION !-LOSSES AT 5 BPH FLOW CHECK ON CONNECTIONS 11:30 - 14:00 2.50 DRILL P INTI CIRCULATE UP SAMPLES -550 GPM WITH 3385 PSI,120 RPM WITH 9K TORQUE -RECIPROCATE AT 150 FPM,RACK BACK ONE STAND -OBSERVE GLAUCONITE IN SAMPLES -FLOW CHECK FOR 10 MINUTES-STATIC TD CALLED AT 9,351'MD,8,573'TVD Printed 3/7/2016 9:24:47AM • W "' S North America-ALASKA- a 0# BP ge20 41 . Operation Summary Report ,� ' Common Well Name:N-31 AFE No Event Type:DRL-ONSHORE(DON) Start Date:1/15/2016 End Date:2/14/2016 X3-017FD-C:(7,241,748.00) Project Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8:00:00PM Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. UWI:50029xxxxx00 Active datum:N-31 Actual(g91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 14:00 - 18:30 4.50 DRILL P INTI PUMP OUT OF HOLE FROM 9,237'MD TO 7,350'MD,MONITOR WELL FOR 10 MINUTES- STATIC 18:30 - 19:30 1.00 DRILL P INTI PULL OUT OF HOLE ON ELEVATORS FROM 7,350'MD TO 5,833'MD. UP WEIGHT 192K 19:30 - 21:00 1.50 DRILL P INTI PULL OUT OF HOLE WITH LAST 5 STANDS BEFORE GHOST REAMER ENTERED 9-5/8" SHOE WHILE BACKREAMING AND PUMPING A FULL BOTTOMS UP. -PUMP AT 550 GPM WITH 2,580 PSI -PULL AT 1000 FPH -SHAKERS CLEAN UP WITH NO LARGE INCREASE IN CUTTINGS LOSSES AT 3-5 BPH 21:00 - 23:30 2.50 DRILL P INTI RUN IN HOLE ON ELEVATORS FROM 5,833' MD TO 9,351'MD -WASH DOWN LAST STAND AT2 BPM,TAG UP ON 5'OF FILL WASH TO BOTTOM WITH NO ISSUES 23:30 - 00:00 0.50 DRILL P INTI PERFORM RIG SERVICE ON FLOOR ;..EQUIPMENT STAGE UP PUMPS AND ESTABLISH CIRCULATION WHILE PERFORMING SERVICE AND CHANGING OUT CREWS 1/29/2016 00.00 - 01:00 1.00 DRILL P INTI CIRCULATE AND CONDITION -CIRCULATE AT 550 GPM WITH 3780 PSI -PUMP HI-VIS SWEEP -PUMP SWEEP AROUND BIT,REDUCE PUMP RATE AND TAG BOTTOM -START TO LOOSE CIRCULATION < -ECD SPIKED WHILE PULLING OFF BOTTOM -TOTAL LOSSES,PULL UP,TRY TO RE-ESTABLISH CIRCULATION,NO SUCCESS -SHUT DOWN PUMPS,WELL STATIC 01:00 - 02:00 1.00 DRILL N DPRB 9,351.00 INTI STAGE PUMPS UP IN 1/2 BBL INCREMENTS TO 2.5 BBLS PER MINUTE WITH NO RETURNS ESTABLISHED -SHUT DOWN PUMPS,STILL AT STATIC LOSSES -CONSULT WITH RIG TEAM,WOS,WS AND ODE,DECISION MADE TO PUMP 40 BBL,40 PPB DRILLAHEAD PILL 02:00 - 06:00 4.00 DRILL N DPRB 9,351.00 INTI PUMP 40 BBLS AT 40 PPB LCM DRILL AHEAD PILL -PUMP AT 3 BPM WITH 570 PSI,PUMP OUT BIT PLUS 10 BBLS -SOAK PILL FOR 1 HOUR WHILE MOVING PIPE AND ROLLING PUMPS -ATTEMPT TO ESTABLISH CIRCULATING STAGING UP TO 5 BPM,NO RETURNS -CONSULT AGAIN WITH TEAM,DECISION MADE TO PUMP 80 BBLS OF 40 PPB LCM DRILL AHEAD PILL THEN PULL UP ABOVE THE HRZ BEFORE TRYING TO ESTABLISH CIRCULATION -PUMP LCM PILLS OUT OF BIT PLUS 10 BBLS OVER DISPLACEMENT Printed 3/7/2016 9.24.47AM North America-ALASKA Bl1r' Page 21 of 41 } y Operation Summary Report'' Common Well Name:N-31 AFE No Event Type:DRL-ONSHORE(DON) Start Date:1/15/2016 End Date:2/14/2016 X3-017FD-C:(7,241,748.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8:00:00PM Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. UWI:50029x000a00 Active datum:N-31 Actual c91.05usft(above Mean Sea Level) Date From-To Hrs Task Code , NPT NPT Depth Phase Description of Operations (hr) (usft) 06:00 - 14:00 8.00 DRILL N DPRB 9,351.00 INTI PUMP OUT OF THE HOLE FROM 9,050'MD TO 4,670'MD -PUMP 1 BPM WITH 340 PSI '-PULL AT 20-25 FPM IN KINGAK,25-35 FPM IN HRZ OBSERVED SLIGHT RETURNS AT 5100'MD 14:00 - 17:00 3.00 DRILL N DPRB 9,351.00 INTI PULL OUT OF THE HOLE ON ELEVATORS FROM 4,670'MD TO 3,278'MD 17:00 - 20:30 3.50 DRILL N DPRB 9,351.00 INTI PUMP OUT OF HOLE FROM 3,278'MD TO 1,366'MD 1-FLUID SYSTEM OUT OF BALANCE,FLOAT NOT HOLDING CAUSING FLUID TO COME OVER TOP OF DRILL PIPE SCREW INTO EACH STAND AND PUMP OUT STOP AT SHOE AND MONITOR WELL FOR 10 MINUTES-STATIC TO MINIMAL LOSSES 20:30 - 21:30 1.00 DRILL N DPRB 9,351.00 INTI PULL OUT OF THE HOLE FROM 1,366'MD TO BHAAT 935 ON ELEVATORS -STOP AT BHAAND MONITOR WELL FOR 10 MINUTES,STATIC TO MINIMAL STATIC LOSSES 21:30 - 22:00 0.50 DRILL N DPRB 9,351.00 INTI PERFORM RIG SERVICE ON FLOOR EQUIPMENT 22:00 - 00:00 2.00 - DRILL N DPRB 9,351.00 INTI PULL AND LAY DOWN BHA -STAND BACK HWDP,LAY DOWN 3 COLLARS — I -PULL BIT TO RIG FLOOR 1/30/2016 00:00 - 01:30 1.50 DRILL N DPRB 9,351.00 INTI HOLD PRE-JOB SAFETY MEETING FOR LAYING DOWN BHA -CLOSE BLINDS,BRAKE AND LAY DOWN BIT (1-1-P N-S-X-I-N O-T D) LAY DOWN CO-PILOT,BCPM,MWD, ONTRACK,AUTOTRACK -PLUG IN TOOLS IN PIPE BARN 01:30 - 02:00 0.50 DRILL P INTI PERFORM WEEKLY FUNCTION TEST FROM ALL STATIONS PER PROCEDURE -BLINDS 15 SECONDS,ANNULAR PREVENTER 27 SECONDS,7"PIPE RAMS AND VARIABLES 16 SECONDS EACH,HCR CHOKE AND KILL 0.5 SECONDS EACH. 02:00 - 02:30 0.50 DRILL N DPRB 9,351.00 INTI CLEAR AND CLEAN FLOOR,LAY DOWN BHA TOOLS 02:30 - 03:30 1.00 DRILL N DPRB 9,351.00 INTI MAKE UP LOST CIRCULATION REMEDIAL ASSEMBLY TO 750'MD -MAKE UP MILL TOOTH BIT,FLOAT SUB WITH PORTED FLOAT,NEAR BIT STABILIZER,8 STAND HWDP WITH JARS,RIH 03:30 - 05:00 1.50 DRILL N DPRB 9,351.00 INTI RUN IN HOLE FROM 750'MD TO 1500'MD ON DRILL PIPE AT 80 FPM 05:00 - 06:30 1.50 DRILL N DPRB 9,351.00 INTI CIRCULATE BOTTOMS UP AT 1,500'MD -STAGE PUMPS UP IN 0.5 BBL INCREMENTS TO 5 BPM -STAGE UP TO FULL RATE OF 14 BPM -BASELINE 658 PSI WITH 12%FLOW -LOST 0.5 BBLS -SEE ATTACHED CIRCULATION DATA FOR PUMPING OPERATIONS 06:30 - 07:30 1.00 DRILL N DPRB 9,351.00 INTI RUN IN HOLE FROM 1,500'MD TO 9-5/8"SHOE AT 3,262'MD AT 80 FPM PU 105K,SO 87K Printed 3/7/2016 9:24:47AM NorthAmerica ALASKA BP Page 22 0#41 Operation Summary Report Common Well Name:N-31 AFE No Event Type:DRL-ONSHORE(DON) Start Date:1/15/2016 End Date:2/14/2016 X3-017FD-C:(7,241,748.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8:00:00PM Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. UWI:50029r000c<00 Active datum:N-31 Actual @91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 07:30 - 09:30 2.00 DRILL N DPRB 9,351.00 INTI CIRCULATE BOTTOMS UP AT 3,262'MD -STAGE PUMPS UP IN 0.5 BBL INCREMENTS FOR 1 BOTTOMS UP -385 GPM WITH 690 PSI,LOST 3 BBLS -ROTATE AT 50-60 RPM WITH 3K TORQUE -RECIPROCATE 15 STROKES 09:30 - 10:00 0.50 DRILL N DPRB 9,351.00 INTI RUN IN HOLE FROM 3,262'MD TO 4,255'MD AT 80 FPM -PU 108K,SO 94K 10:00 - 11:00 1.00 DRILL N DPRB 9,351.00'. INTI CIRCULATE BOTTOMS UP AT 4,255'MD -STAGE PUMPS UP IN 0.5 BBL INCREMENTS FOR 1 BOTTOMS UP -STAGE PUMPS UP ON UP STROKE -210 GPM WITH 358 PSI,LOST 2 BBLS ROTATE AT 60 RPM WITH 5K TORQUE -RECIPROCATE 90'STROKES AT 300 FPH 11:00 - 12:00 1.00 DRILL N DPRB 9,351.00 INTI RUN IN HOLE FROM 4,255'MD TO 5,100'MD AT 80 FPM -PU 135K,SO 101K 12:00 - 14:00 2.00 DRILL N DPRB 9,351.00 INTI CIRCULATE BOTTOMS UP AT 5,100'MD -STAGE PUMPS UP IN 0.5 BBL INCREMENTS FOR 2 BOTTOMS UP STAGE PUMPS UP ON UP STROKE _-588 GPM WITH 1950 PSI,LOST 14 BBLS -ROTATE AT 60 RPM WITH 6K TORQUE -RECIPROCATE 90'STROKES AT 300 FPH -INCREASE IN FINE CUTTINGS 55 BBLS BEFORE BOTTOMS UP 14:00 - 15:00 1.00 DRILL N DPRB 9.351.00 INTI RUN IN HOLE FROM 5,100'MD TO 6,149'MD AT 80 FPM 15:00 - 17:00 2.00 DRILL N DPRB 9,351.00 INTI CIRCULATE BOTTOMS UPAT6,149'MD -STAGE PUMPS UP IN 0.5 BBL INCREMENTS FOR 2 BOTTOMS UP -STAGE PUMPS UP ON UP STROKE -588 GPM WITH 2275 PSI,LOST 8 BBLS -ROTATE AT 60 RPM WITH 7K TORQUE -RECIPROCATE 90'STROKES AT 300 FPH -3%CALCIUM CARBONATE AT BOTTOMS UP 17:00 - 18:00 1.00 DRILL N DPRB 9,351.00 INTI RUN IN HOLE FROM 6,149'MD TO 7,096'MD 18:00 - 22:00 4.00 DRILL N DPRB 9,351.00 INTI WASH DOWN FROM 7,096'MD TO 7,340'MD -STAGE PUMPS UP IN 0.5 BBL INCREMENTS FOR 2 BOTTOMS UP -STAGE PUMPS UP ON UP STROKE -588 GPM WITH 2560 PSI,LOST 8 BBLS 1-ROTATE AT 60 RPMS WITH 7K TORQUE -RECIPROCATE 90'STROKES AT 300 FPM -CUTTINGS AND LCM BACK AT SHAKERS, INCREASE OF 35% 22:00 - 22:30 0.50 DRILL N DPRB 9,351.00 INTI PERFORM RIG SERVICE ON TOP DRIVE 22:30 - 00:00 1.50 DRILL N DPRB 9,351.00 INTI WASH DOWN FROM 7,340'MD TO 7,667'MD AT 300 FPH -400 GPM WITH 1395 PSI -STAGE PUMPS UP OVER 8 MINUTES I-STAGE PUMPS UP OVER 4 MINUTES -LOSSES STARTED AT 40 BPH,FINISHED AT 'ZERO LOSSES PER HOUR -LOST 42 BBLS FOR DAY Printed 3/7/2016 9.24 47AM North America-ALASKA• T,,, a • w a a Operation Summary Report. r Common Well Name:N-31 AFE No Event Type:DRL-ONSHORE(DON) Start Date:1/15/2016 End Date:2/14/2016 X3-017FD-C:(7,241,748.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8:00:00PM Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. UWI:50029)oocxx00 Active datum:N-31 Actual @91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 1/31/2016 00:00 - 06:00 6.00 DRILL N DPRB 9,351.00 INTI WASH DOWN FROM 7,667'MD TO 8,610'MD AT 300-600 FPH -400 GPM WITH 1395-1600 PSI -STAGE PUMPS UP OVER 8 MINUTES STAGE PUMPS DOWN OVER 4 MINUTES LOSSES MINIMAL 06:00 - 10:30 4.50 DRILL N DPRB 9,351.00 INTI WASH DOWN FROM 8,610'MD TO 9,346'MD 'AT 300-325 FPH -450 GPM WITH 2050 PSI -STAGE PUMPS UP OVER 8 MINUTES -STAGE PUMPS DOWN OVER 4 MINUTES LOSSES MINIMAL -INCREASE IN SHALE CUTTINGS FROM 9,083' MD 10:30 - 15:30 5.00 DRILL N DPRB 9,351.00 INTI CIRCULATE 2 BOTTOMS UP AT 450 GPM WITH 2080 PSI -ROTATE AT 60 RPM WITH 10K TORQUE -RECIPROCATE 74'SLOWING PUMPS TO 75% ON THE DOWN STROKE -HEAVY SHALE ON BOTH BOTTOMS UP -PUMP HI-VIS SWEEP SURFACE TO SURFACE -SHALES DECREASED 15:30 - 17:00 1.50 DRILL- N DPRB 9,351.00 INTI PUMP AND SPOT 10 BBLS OF 80 PPB,SUPER LCM PILL ON BOTTOM FOR CASING RUN. -PUMP AT 450 GPM WITH 2040 PSI 17:00 - 20:00 3.00 DRILL P INT1 PUMP OUT OF THE HOLE FROM 9,346'MD TO TOP OF HRZ AT 7,344'MD -PUMP AT 1.5 BPM WITH 160 PSI PULLING AT 40 FPM 20:00 - 20:30 0.50 DRILL P INTI PERFORM RIG SERVICE,GREASE WASH PIPE AND TOP DRIVE -MONITOR WELL WHILE PERFORMING SERVICE 20 30 - 00:00 3.50 DRILL P INTI PULL OUT OF THE HOLE FROM 7,344'MD TO 9-5/8"SHOE AT 3,262'MD -MONITOR WELL-STATIC LOSS RATE 1 BPH -FLUSH PUMP#2 WHILE MONITORING -46 BBLS LOST FOR DAY 2/1/2016 00:00 - 00:30 0.50 DRILL P INTI FLUSH PUMP#2 WITH 150 BBLS FLUID WHILE MONITORING WELL -PUMP DRY JOB 00:30 - 02:00 1.50 DRILL l P INTI PULL OUT OF THE HOLE FROM 3,262'MD TO BHA AT 750'MD -MONITOR WELL FOR 10 MINUTES-STATIC LOSS RATE 1 BPH 02:00 - 03:00 1.00 DRILL P INTI PULLAND LAY DOWN CLEAN OUT ASSEMBLY FROM 750'MD -RACK BACK 7 STANDS 5"HWDP -CLOSE BLINDS,BREAKAND LAY DOWN BIT -OPEN BLINDS,MONITOR WELL THROUGH TRIP TANK 03:00 - 03:30 0.50 BOPSUR P INTI RIG UP WEAR BUSHING PULLING TOOL,PULL WEAR BUSHING Printed 3/7/2016 9:24 47AM • • North America-ALASKA-BP Page 24 of 41 Common Well Name:N-31 AFE No Event Type:DRL-ONSHORE(DON) Start Date:1/15/2016 End Date.2/14/2016 X3-017FD-C:(7,241,748.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8:00:00PM Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. UWI:50029r000cx00 Active datum:N-31 Actual @91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 03:30 - 05:00 1.50 CASING P INTI RIG UP 7"CASING RUNNING AND HANDLING EQUIPMENT -HOLD PRE-JOB SAFETY MEETING TO COVER HAZARDS OF RIGGING UP -RIG UP VOLANT,INSTALL 8.5"BAIL EXTENSIONS,7"SIDE DOOR ELEVATORS PICK UP AND RIG UP POWER TONGS, INSTALL 7"INSERTS INTO PS-21S 05:00 - 05:30 0.50 CASING P INTIHOLD PRE-JOB SAFETY MEETING FOR RUNNING CASING 05:30 - 10:00 4.50 CASING P INTI RUN 7",26#,L-80,VAMTOP HC,CASING TO 9-5/8"CASING SHOE AT 3,262'MD -FILL ON THE FLY,TOP OFF EVERY 10 JOINTS USE JET LUBE SEAL GUARD -TORQUE CONNECTIONS TO 11,950 FT/LBS -PUMP PER RUNNING ORDER SCHEDULE -MUD WEIGHT IN AND OUT 10.4 PPG 10:00 - 10:30 0.50 CASING P INTI' CIRCULATE BOTTOMS UP AT THE SHOE I-PUMP 300 GPM WITH 210 PSI,STAGE PUMPS UP IN 1 BBL INCREMENTS TO 5 BPM. '-BRING PUMPS UP ON THE UP STROKE 10:30 - 00:00 13.50 CASING ' P - INTI 'RUN 7",26#,L-80,VAMTOP HC,CASING FROM {9-5/8"CASING SHOE AT 3,262'MD TO 7,124' IMD -FILL ON THE FLY,TOP OFF EVERY 10 JOINTS I-USE JET LUBE SEAL GUARD TORQUE CONNECTIONS TO 11,950 FT/LBS -CIRCULATE PER RUNNING ORDER SCHEDULE -MUD WEIGHT IN AND OUT 10.4 PPG -AT PLANNED CIRCULATIONS IN UGNU AT 4,240',AND 4,440',STARTED TO PUSH FLUID, SLOWED DOWN FROM 40 FPM TO 20 FPM. CIRCULATED BOTTOMS UP,LOST TOTAL OF 42 BBLS. -LOST 264 BBLS FOR PAST 24 HOURS 2/2/2016 00:00 - 08:00 8.00 CASING P INTI RUN 7",26#,L-80,VAMTOP HC,FROM 7,124' { MD TO TD OF 9,345'MD -FILL ON THE FLY,TOP OFF EVERY 10 JOINTS -USE JET LUBE SEAL GUARD -TORQUE CONNECTIONS TO 11,950 FT/LBS -CIRCULATE PER RUNNING ORDER SCHEDULE -MUD WEIGHT IN AND OUT 10.4 PPG -RUN IN THE HOLE AT 20 FT/MIN -WASH DOWN LAST 4 JOINTS,HANGER AND LANDING JOINT AT 3 BPM,400 PSI WITH NO RETURNS -FINAL PU 278K,SO 178K,PARKER 272 BLOCK WT 35K WEIGHT ON HANGER 143K -5.5 BPH LOSSES WHILE RUNNING IN THE HOLE Printed 3/7/2016 9:24:47AM 4* Operation Summary Report"f ,% f f,. Common Well Name:N-31 AFE No Event Type:DRL-ONSHORE(DON) Start Date:1/15/2016 End Date:2/14/2016 X3-017FD-C:(7,241,748.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8:00:00PM Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. UWI.50029xxxxx00 Active datum:N-31 Actual @91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 08:00 - 10:30 2.50 CASING P INTI STAGE PUMPS UP TO 3 BPM IN 1 BBL INCREMENTS WITH NO RETURNS -1 BPM,266 PSI,NO RETURNS -2 BPM,325 PSI,NO RETURNS -3 BPM,370 PSI,NO RETURNS -BACK PUMPS DOWN TO 1 BPM,FOR MUD RETENTION RECIPROCATE PIPE STRETCH AT SURFACE -LAND ON LANDING RING @ 09.15 DUE TO 35K OVERPULL SIMOPS: -LAY DOWN STANDS OF 5"HWDP OUT OF DERRICK OFFLINE 10:30 - 17:00 6.50 CASING P INTI STAGE PUMPS UP TO 3 BPM AND PUMP 40 BBL OF 40 PPB LCM PILL -32 BBL INTO PUMPING PILL OBSERVE AN INCREASE IN FLOW -STAGE PUMPS UP TO 5 BPM IN.5 BBL INCREMENTS -3 BPM,260 PSI,PARTIAL RETURNS -4 BPM,340 PSI,PARTIAL RETURNS 5 BPM,460 PSI,PARTIAL RETURNS WHILE PILL WAS STILL IN PIPE LOSSES HEALED TO-5 BPH -BACK PUMPS DOWN TO 2 BPM WHILE PILL EXITING SHOE -CONDITION MUD TO CEMENTING PROPERTIES,10.4 PPG,12 PV,18 YP Printed 3/7/2016 9:24:47AM North America-ALASKA-BP • 100/ peratioii Strrnmary fi e/p/Or ,s Common Well Name:N-31 AFE No Event Type:DRL-ONSHORE(DON) Start Date:1/15/2016 End Date:2/14/2016 1X3-017FD-C:(7,241,748.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8:00:00PM Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. UWI:50029)oocxx00 Active datum.N-31 Actual l 91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 17:00 - 20:00 3.00 CASING P INTI CEMENT 7"INTERMEDIATE CASING AS FOLLOWS: -TEST FILL TOLINES 250WITH PSI LOWWATER ANDAND 3800PRESSURE PSI HIGH FOR 5 MINUTES EACH -PUMP 35 BBLS OF 12 PPG MUDPUSH II SPACER @ 5 BPM,370-308 PSI RELEASE BOTTOM PLUG VERIFIED BY WSL -PUMP 56.6 BBLS OF 15.8 PPG CLASS G TAIL ©5 BPM,475-262 PSI, EXCESS VOLUME 30% (YIELD 1.17 CU.FT/SK) -DROP TOP PLUG VERIFIED BY WSL -KICK OUT PLUG WITH 10 BBL FRESH WATER FROM SLB CEMENTERS NO RECIDURING DUE TO EIRXCESSPROCATION OVERPULL OBSERVED CEMENTING WHILE CCULATING PERFORM DISPLACEMENT WITH RIG PUMPS AND 10.4 PPG LSND MUD PER SLB CADE -278 BELS DISPLACED AT 5 BPM:ICP 100 PSI, FCP 195 PSI,PRESSURE STAYED AT 100 PSI UNTIL MUD PUSH EXITED THE SHOE,SLOW RATE TO 4 BPM TO LAND BOTTOM PLUG D OBSERVE BURST 6 BELS DISPLACED AT 4 BPM:ICP 117 PSI, FCP 131 PSI,OBSERVED BOTTOM PLUG LAND ON FLOAT COLLAR AT 284 BBL DISPLACED WITH RIG PUMPS,PRESSURE UP TO 2000 PSI,PLUG FAILED TO BURST -DISCUSSED PLAN FORWARD WITH ODE, WOS,AND WS,DECISION MADE TO CONTINUE TO PRESSURE UP IN 500 PSI INCREMENTS TO 3500 PSI -PRESSURE UP TO 3500 PSI IN 500 PSI INCREMENTS WITH NO SUCCESS,BLEED PRESSURE DOWN TO 0 AND PRESSURE UP TO 3500 PSI,NO SUCCESS -REATTEMPT TO BURST BOTTOM PLUG WITH 3500 PSI MULTIPLE TIMES WITH NO SUCCESS -PULL PIPE INTO TENSION AND PRESSURE UP TO 3500 PSI WITH NO SUCCESS -LAND PIPE ON MANDREL HANGER AND PRESSURE UP TO 4000 PSI 2 TIMES WITH NO SUCCESS -DECISION MADE TO RUN IN WITH CLEAN OUTASSEMBLY -TOTAL LOSSES WHILE PUMPING CEMENT AND DURING DISPLACEMENT:45 BBLS 20:00 - 22:00 2.00 CASING P INTI RIG DOWN DOYON CASING TOOLS -LAY DOWN LANDING JOINT -BLOW DOWN CEMENT LINES AND TOP DRIVE -LAY DOWN VOLANT TOOL -REMOVE BAIL EXTENTIONS AND CASING ELEVATORS INSTALL DP ELEVATORS -PUMP OUT STACK 22:00 - 00:00 2.00 CASING P INTI I SET 7"PACKOFF RIG UP PACKOFF RUNNING TOOL -SET PACKOFF FMC RUN IN LOCK DOWN SCREWS Printed 3/7/2016 9.24.47AM North America-ALASKA-BP Page 27 of 41 Operation Summary Report § Common Well Name:N-31 AFE No Event Type:DRL-ONSHORE(DON) Start Date:1/15/2016 End Date:2/14/2016 X3-017FD-C.(7,241,748.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8:00:00PM Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. UWI.50029xooax00 Active datum:N-31 Actual @91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 2/3/2016 00:00 - 00:30 0.50 CASING P INTI SERVICE TOPDRIVEAND FLOOR EQUIPMENT 00:30 - 01:00 0.50 CASING P INTI RIG UP TO TEST PACKOFF 01:00 - 02:30 1.50 CASING P INTI PRESSURE TEST PACKOFF TO 250 PSI LOW FOR 5 MIN AND 3500 PSI HIGH FOR 15 MIN -TEST APPROVED BY WELLS SUPERINTENDENT 02:30 - 03:00 0.50 CASING P INTI RIG DOWN TEST EQUIPMENT DISENGAGE PACKOFF RUNNING TOOLAND LAY DOWN -INSTALL WEAR BUSHING(6-13/16"ID) -RACK BACK STAND OF HWDP 03:00 - 05:00 2.00 CASING N CEMT 9,351.00 ! INTI MAKE UP 6-1/8"CLEANOUT BHA TO 566'MD -NEW 6-1/8"MILLTOOTH TRICONE BIT BIT SUB -2 FLOAT SUBS WITH PORTED FLOATS FOR !REDUNDANCY 6-4-3/4"DRILL COLLARS -CROSSOVER -6-4"HWDP -JARS 5-4"HWDP 05:00 - 09:00 4.00 CASING N CEMT 9,351.00 j INTI RUN IN THE HOLE WITH CLEANOUT BHA ON 4"DP FROM 566'MD TO 7784'MD -WASH DOWN FROM 7186'MD TO TOP OF CEMENT AT 7784'MD,300 GPM,1450 PSI PU 165K,SO 125K 09:00 - 00:00 15.00 CASING N CEMT 9,351.00 INTI DRILL CEMENT FROM 7784'MD TO 9120'MD -INSTANTANEOUS ROP=140 FPH -400 GPM,2460-2580 PSI,80 RPM,6-8 KFT-LBS OFF BOTTOM TORQUE,7-9 KFT-LBS ON BOTTOM,10-12 KLBS WOB -PU 193K,SO 128K,ROT 147K -MW IN/OUT=10.4 PPG -HOLD UNANNOUNCED KICK WHILE DRILLING(D2)DRILL WITH POWER OUTAGE COMPLEX SCENARIO AND AAR -OBSERVE YELLOW RUBBER AT SHAKERS INDICATING TOP PLUG BEING DRILLED AT 7786'MD 2/4/2016 00:00 - 01:00 1.00 CASING N CEMT 9,351.00 INTI DRILL CEMENT FROM 9120'MD TO 9223'MD -INSTANTANEOUS ROP=140 FPH -400 GPM,2630 PSI,80 RPM,8 KFT-LBS OFF BOTTOM TORQUE,9 KFT-LBS ON BOTTOM, 12 KLBS WOB -PU 194K,SO 129K,ROT 147K -MW IN/OUT=10.4 PPG 01.00 - 02:30 1.50 CASING I N CEMT 9,351.00 INTI CIRCUALTE BOTTOMS UP AND DISPLACE CEMENT CONTAMINATED MUD WITH CLEAN MUD -400 GPM,2650 PSI WITH CONTAMINATED MUD,2200 PSI WITH FRESH MUD -80 RPM,8-9K TORQUE -RECIPROCATE 45' 02:30 - 04:00 1.50 CASING N CEMT 9,351.00 INTI !PRESSURE TEST 7"INTERMEDIATE CASING !TO 250 PSI LOW FOR 5 MIN AND 3500 PSI j HIGH FOR 30 MIN PUMP IN 4.5 BBL,BLEED BACK 4.5 BBL !-TESTAPPROVEDBYSUPERINTENDENT Printed 3/7/2016 9:24:47AM • North America-ALASKA-BP {"Y!"Y! r 31',4,17'),:t,;#7,1,,,lc:4;ili:L:11012,0:::„.;,,,,:1:%;11:1, Operation Summary Rem ' • Common Well Name:N-31 AFE No Event Type:DRL-ONSHORE(DON) Start Date:1/15/2016 End Date:2/14/2016 X3-017FD-C:(7,241,748.00) Project:Prudhoe Bay i Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8:00:OOPM Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. UWI:50029xxxxx00 Active datum:N-31 Actual @91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) _ (usft) 04:00 - 08:00 4.00 CASING C N CEMT 9,351.00 INTI DRILL CEMENT,BOTTOM PLUG AND FLOAT COLLAR FROM 9223'MD TO 9259'MD -INSTANTANEOUS ROP=140 FPH -400 GPM,2240 PSI,80 RPM,8 KFT-LBS OFF BOTTOM TORQUE,9 KFT-LBS ON BOTTOM, 6-12 KLBS WOB -PU 194K,SO 129K,ROT 147K MW IN/OUT=10.4 PPG -OBSERVE ORANGE RUBBER AT SHAKERS INDICATING BOTTOM PLUG BEING DRILLED AT 9258'MD. -OBSERVE 135 PSI ON OAAFTER DRILLING THROUGH FLOAT COLLAR 08:00 - 08:30 0.50 CASING N CEMT 9,351.00 INTI WASH DOWN FROM BOTTOM OF FLOAT COLLAR AT 9259'MD TO TOP OF SHOE AT 9343'MD -300 GPM,1500 PSI -10 RPM,8K TORQUE 08:30 - 09:30 1.00 CASING N CEMT 9,351.00 INTI CIRCULATE BOTTOMS UP -380 GPM,1912 PSI 1-70 RPM,8K TORQUE RECIPROCATE STAND 09:30 - 16.30 7.00 CASING N CEMT 9,351.00 INTI ESTABLISH CIRCULATION UP OA CLOSE ANNULAR -RIG UP OA TO BLEEDER ON STAND PIPE MANIFOLD TO THE FLOWLINE STAGE PUMPS UP IN.5 BPM INCREMENTS AND ALLOW PRESSURE TO STABILIZE PRIOR TO INCREASING RATE -.5 BPM=325 PSI -1 BPM=400 PSI -1.5 BPM=495 PSI 2 BPM=585 PSI -2.5 BPM=645 PSI 3 BPM=679 PSI STAGE PUMPS DOWN IN.5 BBL INCREMENTS 2 BPM=457 PSI 1.5 BPM=380 PSI -1 BPM=303 PSI -OBSERVED—50%RETURNS AT EACH PUMP RATE WITH 385 BBL PUMPED AND 180 BBL RETURNED -BLEED OFF ALL PRESSURE AND OPEN ANNULAR -MONITOR WELL FOR 30 MIN(STATIC) 16:30 - 17:30 1.00 CASING N CEMT 8,351.00 INTI DRILL OUT CASING SHOE AT 9343'MD AND WASH DOWN TO 9346'MD -200 GPM,870 PSI,60 RPM,9K TORQUE,6-8K WOB -PU 181K,SO 156K,ROT 158K -MONITOR WELL FOR 10 MIN(STATIC) 17.30 - 19.00 1.50 CASING N CEMT 9,351.00 INTI CIRCUALTE BOTTOMS UP -208 GPM,825 PSI -40 RPM,9K TORQUE -RECIPROCATE 20' -120 BPH LOSSES Printed 3/7/2016 9.24:47AM North America-ALASKA-BP Page 29 of 41 Operation Summary Deport ,w rf Common Well Name:N-31 AFE No Event Type:DRL-ONSHORE(DON) Start Date:1/15/2016 End Date 2/14/2016 X3-017FD-C:(7,241,748.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8:00:00PM Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. UWI:50029x0000c00 Active datum:N-31 Actual @91.05usft(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 CASING N CEMT 9,351.00 INTI CLOSE ANNULAR AND REESTABLISH CIRCULATION UP OA IN.5 BBL INCREMENTS TO ENSURE ANNULUS IS STILL CLEAR -1 BPM=310 PSI -1.5 BPM=365 PSI -2BPM=417 PSI -2.5 BPM=476 PSI -3 BPM=530 PSI -BLEED OFF PRESSURE AND OPEN ANNULAR MONITOR WELL FOR 30 MIN(STATIC) 19:30 - 20:00 0.50 CASING P INTI SERVICE TOPDRIVE AND FLOOR EQUIPMENT 20:00 - 00:00 4.00 CASING N CEMT 9,351.00 INTI PULL OUT OF THE HOLE ON ELEVATORS FROM 9345'MD TO 3883'MD PU 209K,SO 143K HOLE TAKING PROPER FILL,NO LOSSES WHILE PULLING.OUT OF THE HOLE 2/5/2016 00:00 - 03:30 3.50 CASING ' N CEMT 9,351.00 INTI PULL OUT OF THE HOLE ON ELEVATORS FROM 3883'MD TO SURFACE LAY DOWN 6-1/8"CLEANOUT BHA BIT GRADE:1-1-WT-S-E-I-NO-TD HOLE TAKING PROPER FILL,NO LOSSES ;WHILE PULLING OUT OF THE HOLE 03:30 - 04:00 0.50 CASING ' N CEMT 9,351.00 ` INTI CLEAN AND CLEAR RIG FLOOR -MOVE HWDP TO DS OF RACKING BOARD -SWAP RIG TO HIGH LINE POWER 04:00 - 05:00 1.00 CASING N CEMT 9,351.00 INTI MAKE UP FASDRILL ONTO STAND OF 4"DP PER HALLIBURTON REP -DUMMY RUN RUNNING TOOL THROUGH WELLHEAD -INSTALL 8 SHEAR PINS FOR 42,488K SHEAR 05:00 - 13:30 8.50 CASING _ N CEMT 9,351.00 INTI TRIP IN THE HOLE WITH FASDRILL ON 4"DP FROM SURFACE TO PLANNED SET DEPTH AT 9274'MD -SLOW DOWN TO 30 FPM TO AVOID PUSHING AWAY FLUID -4BBL LOSS DURING TRIP 13:30 - 14:00 0.50 CASING N CEMT 9,351.00 INTI SET FASDRILL CEMENT RETAINER PER HES PROCEDURE AT 9274'MD -SHEAR OUT AT 36K OVERPULL -UNSTING FROM FASDRILL MAKE UP CEMENTING ASSEMBLY ON TOP OF DP -FOSV -SIDE ENTRY SUB -FOSV 14:00 - 14:30 0.50 CASING N CEMT 9,351.00 INTI ESTABLISH CIRCULATION AND STAGE PUMPS UP IN.5 BBL INCREMENTS TO 6 BPM -2 BPM=385 PSI 3 BPM=495 PSI 4 BPM=640 PSI -5 BPM=830 PSI I-6BPM=1100PSI 14:30 - 15:00 0.50 CASING N CEMT 9,351.00 INTI PRESSURE TEST FASDRILL CEMENT RETAINER FROM ABOVE TO 250 PSI LOW AND 1000 PSI HIGH FOR 5 MIN EACH(PASS) -NO APPROVAL REQUIRED 15:00 - 15:30 0.50 CASING N CEMT 9,351.00 INTI RIG UP CEMENT LINE TO CEMENT ASSY -BLOW DOWN CHOKE AND KILL LINES Printed 3/7/2016 9:24:47AM 'Operation Summary Report `` Common Well Name:N-31 AFE No Event Type:DRL-ONSHORE(DON) Start Date:1/15/2016 End Date:2/14/2016 X3-017FD-C:(7,241,748.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8:00:00PM 1Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. UWI:50029r0000c00 Active datum:N-31 Actual @91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 15:30 - 18:30 3.00 CASING N CEMT 9,351.00 INTI CIRCULATE 4 BOTTOMS UP TO WARM UP FLUID BEHIND 7"CASING -6 BPM,1090 PSI MUD TEMP 75° SIMOPS: -PRESSURE TEST CEMENT LINES OFFLINE TO 250 PSI LOW AND 4500 PSI HIGH FOR 5 MIN EACH 18:30 - 22:30 4.00 CASING N CEMT 9,351.00 INTI. STING INTO CEMENT RETAINER AND ESTABLISH CIRCULATION UP OA IN.5 BBL INCREMENTS,PUMPING 20 BBL AT EACH STAGE TAKING RETURNS TO CELLAR -1 BPM=400 PSI,.5 BPM RETURNS -1.5 BPM=468 PSI,1 BPM RETURNS -2 BPM=515 PSI,1.5 BPM RETURNS -2.5 BPM=560 PSI,2 BPM RETURNS -3 BPM=620 PSI,2 BPM RETURNS -3.5 BPM=660 PSI,2 BPM RETURNS -4 BPM=710 PSI,2 BPM RETURNS -4.5 BPM=790 PSI,2.5 BPM RETURNS -5 BPM=890 PSI,2.5 BPM RETURNS PUMPED 180 BBL,RECIEVED 125 BBL BACK SLOW PUMPS DOWN TO 1 BPM AND DISCUSS PLAN FORWARD WITH ODE, DECISION MADE TO CIRCUALTE AND CONDITION MUD TO CEMENTING PROPERTIES -STAGE PUMPS UP TO 3 BPM AND CIRCULATE 1.5 BOTTOMS UP UNTIL MUD REACHED CEMENTING PROPERTIES,11 PV, 18 YP,10.4 PPG 22:30 - 00:00 1.50 CASING N CEMT 9,351.00 INTI CEMENT 7"INTERMEDIATE CASING AS FOLLOWS: -PUMP 20 BBLS OF 12 PPG MUDPUSH II SPACER©3 BPM,550-430 PSI -PUMP 60 BBLS OF 15.8 PPG CLASS G TAIL @ 3 BPM,430-27 PSI,EXCESS VOLUME 30% (YIELD 1.17 CU.FT/SK) -PUMP 7 BBLS OF 12 PPG MUDPUSH II SPACER @ 3 BPM PERFORM DISPLACEMENT WITH CEMENT PUMPS AND 10.4 PPG LSND MUD PER SLB CADE 83.5 BBLS DISPLACED AT 3 BPM:ICP 200 'PSI,FCP 890 PSI,FINAL LIFT PRESSURE WITHIN 11%OF SIMULATED LIFT PRESSURES -LEAVE 5 BBL IN DRILLPIPE -ALL RETURNS TAKEN TO CELLAR TO REDUCE FRICTION PRESSURES -TOTAL DISPLACEMENT VOLUME 90.5 BBLS -NO RECIPROCATION DUE TO BEING STUNG INTO CEMENT RETAINER -LOSSES FROM CEMENT EXIT SHOE TO CEMENT IN PLACE:8 BBLS I-TOTAL LOSSES FOR CEMENT JOB:10 BBL Printed 3/7/2016 9.24:47AM • • '; North America-ALASKA BP '' � Page 31 of 41 ' f %`l Operation Summary Repo FF /f „`t Common Well Name:N-31 AFE No Event Type:DRL-ONSHORE(DON) Start Date:1/15/2016 End Date:2/14/2016 X3-017FD-C:(7,241,748.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 1 Spud Date/Time:1/17/2016 8:00:00PM Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. UWI:50029x0000c00 Active datum:N-31 Actual(q)91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 2/6/2016 00:00 - 02:30 2.50 CASING N CEMT 9,351.00 INTI UNSTING FROM CEMENT RETAINER AND PICK UP 30'TO CIRCULATE OUT EXCESS CEMENT -CLOSE BOTTOM FOSV AND BREAK OFF CEMENT LINE FROM SIDE ENTRY SUB AND INSTALL BLANK -CIRCULATE BOTTOMS UP AT 420 GPM,2070 PSI,OBSERVE--5 BBL CEMENT AND 7 BBL MUD PUSH BACK AT SHAKERS BREAK OFF CEMENT ASSY,INSTALL CLEANOUT BALL IN PIPE PUMP 20 BBL NUT PLUG SWEEP BEHIND CLEANOUT BALL AND PUMP AT 420 GPM, 1980 PSI UNTIL BALL AND SWEEP EXIT STINGER -INSTALL 2ND CLEANOUT BALL IN PIPE AND PUMP ADDITIONAL 20 BBL NUTPLUG SWEEP BEHIND BALL AT 420 GPM,2000 PSI -PUMP BOTH CLEANOUT BALLS AND NUT PLUG SWEEPS OUT OF THE HOLE 02:30 - 03:00 0.50 CASING N CEMT 9,351.00 INTI MONITOR WELL FOR 10 MIN(STATIC)AND PUMP DRY JOB 03:00 - 07:00 4.00 CASING N CEMT 9,351,.00 INTI PULL OUT OF THE HOLE FROM 9244'MD TO SURFACE I-LAY DOWN FASDRILL RUNNING TOOL 07:00 - 08:30 1.50 CASING' N CEMT 9,351.00 INTI CLEAN AND CLEAR RIG FLOOR -CHANGE OUT PS-21'S WITH MASTER 'BUSHINGS -FLUSH OUT STACK DUE TO CIRCULATING j OUT EXCESS CEMENT -RIG DOWN DP SPINNERS 08:30 - 10:30 2.00 BOPSUR P INTI I CHANGE OUT UPPER 7"RAMS TO 2-7/8"X 15-1/2"VARIABLE BORE RAMS -BARRIERS WHILE CHANGING RAMS -CLOSED BLIND RAMS -KILL WEIGHT FLUID MONITORED BY CIRCULATING ACROSS MUDCROSS UNDER THE RAMS SIMOPS: -MAKE UP 4"VALVE ASSY -RIG DOWN STACK FLUSHING TOOL -MAKE UP TEST JOINT 10:30 - 11:00 0.50 BOPSUR P INTI PULL WEAR BUSHING AND INSTALL TEST PLUG -LOWER TOP DRIVE AND RIG UP TEST HOSES 11:00 - 14:00 3.00 BOPSUR P INTI FILLALL BOPE WITH WATER AND PURGE AIR -PERFORM SHELL TEST ON BOPE TROUBLESHOOT LEAKS CHANGE OUT RUBBER ON TEST PLUG -FLUSH FOAM BALLS OUT OF STACK -PURGE AIR FROM TEST EQUIPMENT CONCLUDE HYDRAULIC IBOP ON TOPDRIVE LEAKING 14:00 - 19:30 5.50 BOPSUR P INTI I TEST BOPE TO 250 PSI LOW AND 3500 PSI HIGH FOR 5 MIN EACH -TEST WITH 4.5"AND 4"TEST JOINTS -ALL TESTS CHARTED -1 FAILURE,UPPER IBOP ON TODRIVE -TEST WITNESS WAIVED BYAOGCC REP LOU GRIMALDI Printed 3/7/2016 9:24:47AM North America ALASKA-BPS Page 32 of 41 is Operation Summary Report Common Well Name:N-31 AFE No Event Type:DRL-ONSHORE(DON) Start Date:1/15/2016 End Date:2/14/2016 X3-017FD-C:(7,241,748.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8:00:00PM Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. UWI:50029r000cx00 Active datum:N-31 Actual @91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT I NPT Depth Phase Description of Operations (hr) (usft) 19:30 - 21:30 2.00 BOPSUR P INTI RIG DOWN TEST EQUIPMENT -PULL TEST PLUG -INSTALL WEAR BUSHING -BLOW DOWN CHOKE AND KILL LINES 21:30 - 00:00 2.50 BOPSUR N RREP 9,351.00 INTI NON IADC CODE 8 NPT:CHANGE OUT UPPER IBOP -PRESSURE TEST NEW IBOP OFFLINE SIMOPS: FREEZE PROTECT OA WITH 27 BBL OF 14 f PPG LSND AND 64 BBL 6.8 PPG DIESEL 2/7/2016 00:00 - 05:00 5.00 BOPSUR N RREP 9,351.00 INTI I NON IADC CODE 8 NPT:CHANGE OUT UPPER IBOP -MONITOR WELL ON TRIP TANKS 05:00 - 06:30 1.50 BOPSUR N RREP 9,351.00 INTI RIG UP AND TEST UPPER IBOP TO 250 PSI LOW AND 3500 PSI HIGH FOR 5 MIN EACH (PASS) _ -RIG DOWN TEST EQUIPMENT 06:30 - 10:30 4.00 DRILL P INTI MAKE UP 6-118"DRILLING BHA TO 547'MD 6-1/8"HUGHES PDC BIT -AUTO TRACK RSS GR/RESNSS/DIR/DEN/NEU/CALIPER 10:30 - 14:30 4.00 DRILL P INTI TRIP IN THE HOLE WITH 6-1/8"DRILLING BHA ON 4"DP FROM 547'MD TO 200'FROM TOP OF CEMENT RETAINER AT 9070'MD ,-SHALLOW HOLE TEST DIRECTIONAL TOOLS ON FIRST STAND OF DP WITH 300 GPM,1340 _ PSI,30 RPM,1K TORQUE 14:30 - 16:00 1.50 DRILL P. INTI CUT AND SLIP 94'OF DRILLING LINE -HANG BLOCKS -CUT AND SLIP LINE -UNHANG BLOCKS -RECALIBRATE BLOCK HEIGHT IN AMPHION AND BAKER SYSTEMS -OBSERVE EVIDENCE OF SWIVEL PACKING LEAKING ON TOPDRIVE WHILE UNHANGING BLOCKS 16:00 - 16:30 0.50 DRILL P INTI CHANGE OUT SWIVEL PACKING ON TOP _DRIVE 16:30 - 17:00 0.50 DRILL P INTI ESTABLISH CIRCULATION AND WASH DOWN FROM 9070'MD TO TOP OF CEMENT AT 9238' MD -84 GPM,550 PSI 17:00 - 21:00 4.00 DRILL P INTI DRILL CEMENTANDFASDRILLCEMENT RETAINER FROM 9238'MD TO 15'FROM CASING SHOE AT 9330'MD -200 GPM,1320 PSI -50-80 RPM,8-9K TORQUE -2-12K WOB -TOP OF CEMENT RETAINER OBSERVED AT 9271'MD -HARD CEMENT OBSERVED BELOW CEMENT RETAINER 21:00 - 23:00 2.00 DRILL P INTI DISPLACE WELL FROM 10.4 PPG LSND TO 8.6 PPG QUICK DRIL-N -300 GPM,2425 PSI WITH LSND AND 1700 PSI WITH QUICK DRIL-N -RECIPROCATE STAND DURING DISPLACEMENT -MONITOR WELL FOR 15 MIN AFTER 'DISPLACEMENT(STATIC) Printed 3/7/2016 9'24:47AM Common Well Name:N-31 i AFE No Event Type:DRL-ONSHORE(DON) Start Date:1/15/2016 End Date:2/14/2016 X3-017FD-C:(7,241,748.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time'1/17/2016 8.00:00PM Rig Release'2/18/2016 Rig Contractor:PARKER DRILLING CO. UWI:50029xxxxx00 Active datum:N-31 Actual©91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) L 23:00 - 00:00 1.00 DRILL P INTI DRILL CEMENT AND CLEAN OUT RATHOLE FROM 9330'MD TO 9351'MD -250 GPM,1620 PSI -60 RPM,8-9K TORQUE 12K WOB -MONITOR WELL FOR 15 MIN AFTER CLEANING OUT RATHOLE(STATIC) 2/8/2016 00:00 - 00:30 0.50 DRILL P INTI DRILL 20'OF NEW FORMATION FROM 9351' MD TO 9371'MD -300 GPM,1620 PSI,60 RPM,9K TORQUE, 10K WOB -INSTANTANEOUS 30-50 FT/HR -PU 200K,SO 138K,ROT 160K -MUD WEIGHT IN/OUT: 8.6 PPG 00:30 - 01:30 1.00 DRILL P INTI PULL INTO SHOE AND CIRCULATE BOTTOMS UP -325 GPM,1800 PSI -80 RPM,9K TORQUE -RECIPROCATE 80'WHILE CIRCULATING -ENSURE EVEN MUD WEIGHT THROUGHOUT _ _ HOLE 01:30 - 02:00 0.50 DRILL P 1 INTI RIG UP AND PERFORM FIT -MUD WEIGHT:8.6 PPG,8567'TVD,9345'MD PUMP.7 BBLS TO 590 PSI,BLEED BACK.7 BBLS i -FIT EMW=9.9 PPG -KICK TOLERANCE INFINITE WITH EMW>9.1 PPG -LOT APPROVED BY ODE 02:00 - 12:00 10.00 DRILL P PROD1 DIRECTIONAL DRILL 6-1/8"PRODUCTION HOLE FROM 9371'MD TO 9581'MD(160'IN 10 HRS=16 FPH WITH CONNECTIONS) 1-INSTANTANEOUS ROP=10-100 FPH. -325 GPM,1910 PSI,140 RPM,8 KFT-LBS OFF BOTTOM TORQUE,9 KFT-LBS ON BOTTOM, 10-12 KLBS WOB -PU 193K,SO 148K,ROT 162K -MW IN/OUT=8.6 PPG -SURVEY EVERY 30'-90'DEPENDING ON DLS. NO BACKREAMING -NO LOSSES WHILE DRILLING AHEAD -10-30 FPH INSTANTANEOUS ROP OBSERVED WHILE DRILLING SHUBLIK FORMATION Printed 3/7/2016 9:24:47AM • North America-ALASKA-BP Page 34 of 41 operation Summary Report Common Well Name:N-31 AFE No Event Type:DRL-ONSHORE(DON) Start Date:1/15/2016 End Date:2/14/2016 X3-017FD-C:(7,241,748.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8:00:00PM Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. UWI:50029r0000c00 Active datum:N-31 Actual t91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 12:00 - 18:00 6.00 DRILL P PROD1 DIRECTIONAL DRILL 6-1/8"PRODUCTION HOLE FROM 9581'MD TO 9910'MD(329'IN 6 HRS=55 FPH WITH CONNECTIONS) -INSTANTANEOUS ROP=100-150 FPH. 325 GPM,1875 PSI,140 RPM,9 KFT-LBS OFF BOTTOM TORQUE,11 KFT-LBS ON BOTTOM, 12-14 KLBS WOB PU 195K,SO 145K,ROT 160K -MW IN/OUT=8.6 PPG SURVEY EVERY 30'-90'DEPENDING ON DLS. NO BACKREAMING -NO LOSSES WHILE DRILLING AHEAD -PUMP 40 BBL HIGH VIS SWEEP AT 9835'MD, MINIMAL INCREASE IN CUTTINGS BACK AT SHAKERS -RIG ON GENERATOR POWER TO TEST GENERATORSAFTER REBUILD 18:00 - 00:00 6.00 DRILL P PROD1 DIRECTIONAL DRILL 6-1/8"PRODUCTION HOLE FROM 9910'MD TO 10269'MD(359'IN 6 HRS=60 FPH WITH CONNECTIONS) INSTANTANEOUS ROP=100-150 FPH. 325 GPM,1900 PSI,140 RPM,9 KFT-LBS OFF BOTTOM TORQUE,11 KFT-LBS ON BOTTOM, 14 KLBS WOB -PU 191K,SO 143K,ROT 160K -MW IN/OUT=8.6 PPG -SURVEY EVERY 30'-90'DEPENDING ON DLS. NO BACKREAMING -NO LOSSES WHILE DRILLING AHEAD 2/9/2016 00:00 - 06:00 6.00 DRILL P PROD1 DIRECTIONAL DRILL 6-1/8"PRODUCTION HOLE FROM 10269'MD TO 10517'MD(248'IN 6 HRS=41 FPH WITH CONNECTIONS) -INSTANTANEOUS ROP=100-150 FPH. -325 GPM,1900 PSI,140 RPM,10 KFT-LBS OFF BOTTOM TORQUE,12 KFT-LBS ON BOTTOM,14 KLBS WOB -PU 185K,SO 145K,ROT 158K -MW IN/OUT=8.6 PPG SURVEY EVERY 30'-90'DEPENDING ON DLS. NO BACKREAMING ,-NO LOSSES WHILE DRILLING AHEAD -PUMP 40 BBL HIGH VIS SWEEP AT 10400' MD,MINIMAL INCREASE IN CUTTINGS BACK AT SHAKERS 06:00 - 12:00 6.00 DRILL P PROD1 DIRECTIONAL DRILL 6-1/8"PRODUCTION HOLE FROM 10517'MD TO 10838'MD(321'IN 6 HRS=54 FPH WITH CONNECTIONS) i-INSTANTANEOUS ROP=100-150 FPH. 325 GPM,1970 PSI,140 RPM,9 KFT-LBS OFF BOTTOM TORQUE,12 KFT-LBS ON BOTTOM, :14 KLBS WOB -PU 185K,SO 145K,ROT 157K -MW IN/OUT=8.6 PPG -SURVEY EVERY 30'-90'DEPENDING ON DLS. NO BACKREAMING -NO LOSSES WHILE DRILLING AHEAD Printed 3/7/2016 9:24.47AM North AmericaALASKA-BR • " Page 35 of 41 �j f y '"Operation . ,iry"Repo f Common Well Name:N-31 APE No Event Type:DRL-ONSHORE(DON) Start Date:1/15/2016 End Date:2/14/2016 X3-017FD-C:(7,241,748.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8:00:00PM Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. UWI:50029x0000c00 Active datum:N-31 Actual @91.05usft(above Mean Sea Level) Date From-To I Hrs Task j Code I NPT NPT Depth Phase Description of Operations (hr) (usft) 12:00 - 18:00 6.00 DRILL P PROD1 DIRECTIONAL DRILL6-1/8"PRODUCTION I HOLE FROM 10838'MD TO 11248'MD(410'IN 6 HRS=68 FPH WITH CONNECTIONS) INSTANTANEOUS ROP=100-150 FPH. -325 GPM,1990 PSI,140 RPM,11 KFT-LBS OFF BOTTOM TORQUE,12 KFT-LBS ON BOTTOM,14 KLBS WOB PU 189K,SO 141K,ROT 152K -MW IN/OUT=8.6 PPG SURVEY EVERY 30'-90'DEPENDING ON DLS. NO BACKREAMING -NO LOSSES WHILE DRILLING AHEAD -PUMP 40 BBL HIGH VIS SWEEP AT 10970' MD,MINIMAL INCREASE IN CUTTINGS BACK 'AT SHAKERS 18:00 - 00:00 6.00 DRILL P PROD1 DIRECTIONAL DRILL 6-1/8"PRODUCTION HOLE FROM 11248'MD TO 11560'MD(312'IN 6 HRS=52 FPH WITH CONNECTIONS) -INSTANTANEOUS ROP=100-150 FPI-I. -325 GPM,2050 PSI,140 RPM,11 KFT-LBS OFF BOTTOM TORQUE,12 KFT-LBS ON BOTTOM,14 KLBS WOB �-PU 192K,SO 137K,ROT 153K -MW IN/OUT=8.6 PPG -SURVEY EVERY 30'-90'DEPENDING ON DLS. NO BACKREAMING -NO LOSSES WHILE DRILLING AHEAD 2/10/2016 00:00 - 03:30 3.50 DRILL P PROD1 DIRECTIONAL DRILL 6-1/8"PRODUCTION HOLE FROM 11560'MD TO 11766'MD(206'IN 13.5 HRS=59 FPH WITH CONNECTIONS) I-INSTANTANEOUS ROP=100-150 FPH. -325 GPM,2125 PSI,140 RPM,11 KFT-LBS OFF BOTTOM TORQUE,13 KFT-LBS ON BOTTOM,4-14 KLBS WOB PU 199K,SO 138K,ROT 155K MW IN/OUT=8.6 PPG -SURVEY EVERY 30'-90'DEPENDING ON 1 DLS. NO BACKREAMING -NO LOSSES WHILE DRILLING AHEAD -ACTUAL DAILY DRILLING TIME=1.9 HR PUMP 40 BBL HIGH VIS SWEEP AT 11615'MD, MINIMAL INCREASE IN CUTTINGS BACK AT SHAKERS OBSERVE 300 PSI PRESSURE INCREASE AT 11766'MD,PICK UP OFF BOTTOM TO TROUBLESHOOT PRESSURE INCREASE Printed 3/7/2016 9:24:47AM u Common Well Name:N-31 AFE No Event Type:DRL-ONSHORE(DON) Start Date:1/15/2016 End Date:2/14/2016 X3-017FD-C:(7,241,748.00) Project:Prudhoe Bay Site PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time 1/17/2016 8.00:OOPM Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. UW.50029xxxxx00 Active datum:N-31 Actual @91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 03:30 - 06:00 2.50 DRILL P PROD1 TROUBLESHOOT PRESSURE INCREASE ATTEMPT TO SET BIT BACK ON BOTTOM MULTIPLE TIMES WITH NO SUCCESS, OBSERVE 300-500 PRESSURE INCREASE 2-3' OFF BOTTOM -ATTEMPT TO SET BIT ON BOTTOM WITH HIGH AND LOW FLOW RATES,HIGH AND LOW RPM,AND SLIDE TO BOTTOM WITH SAME RESULTS,PRESSURE INCREASE 2'-3'OFF BOTTOM -DOWNLINK TO RIBS OFF ON AUTOTRAK WITH NO SUCCESS -DISCUSS PLAN FORWARD WITH WOS, DECISION MADE TO PUMP NUT PLUG SWEEP -CIRCULATE 3 BOTTOMS-UP WHILE PREPARING AND PUMPING 20 BBL NUT PLUG SWEEP(325 GPM,2070 PSI) -REATTEMPT TO SET BIT ON BOTTOM WITH NO SUCCESS -DISCUSS PLAN FORWARD WITH ODE, DECISION MADE TO PULL OUT OF THE HOLE TO INSPECT BIT AND BHA 06:00 - 11:30 5.50 DRILL P PROD1 PULL OUT OF HOLE ON ELEVATORS WITH 16-1/8"DRILLING ASSEMBLY FROM 11766'MD TO TOP OF BHA AT 547'MD -MONITOR WELL FOR 10 MINUTES ON BOTTOM AND AT SHOE:STATIC PU 196K,SO 139K AT 11766'MD -NO HOLE ISSUES -MINIMAL LOSSES(-2 BPH) 11:30 - 14:30 3.00 DRILL P PROD1 PULL OUT OF HOLE WITH 6-1/8"DRILLING BHA#8 FROM 547'MD TO SURFACE -MONITOR WELL FOR 10 MINUTES.STATIC -PERFORM PJSM -LAY DOWN SDN(REMOVE NUKES),PULSER AND MWD(DOWNLOAD)DUE TO POSSIBLE DAMAGE NOTED BY BAKER -6-1/8"HCC T406FSX BIT GRADE: 7-8-RO-S-X-2-BT-PP 14:30 - 18:30 4.00 DRILL P PROD1 MAKE UP 6-1/8"DRILLING BHA#9 FROM SURFACE TO 546'MD -PERFORM PJSM -INCLUDE 6-1/8"HCC T406SX PDC, AUTOTRAK RSS,ONTRAK MWD(UPLOAD TOOL),SDN(LOAD NUKES) 18:30 - 19:00 0.50 DRILL P PROD1 SERVICE TOPDRIVE AND RIG FLOOR EQUIPMENT 19:00 - 00:00 5.00 DRILL P PROD1 RUN IN HOLE ON ELEVATORS WITH 6-1/8" DRILLING ASSEMBLY FROM TOP OF BHA AT 546'MD TO 9700'MD AT MIDNIGHT -RUNNING SPEED:150 FPM IN CASING,60 FPM IN OPEN HOLE(NO HOLE ISSUES) -SHALLOW HOLE TEST MWD AT 1000'MD (PASS) -MINIMAL LOSSES(-2 BPH) Printed 3/7/2016 9:24.47AM • North America-ALASKA-BP • ' Page 37 of 41 Operation Summary/, epott6, Common Well Name:N-31 AFE No Event Type:DRL-ONSHORE(DON) Start Date:1/15/2016 End Date:2/14/2016 X3-017FD-C:(7,241,748.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8:00:00PM l Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. UWI:50029x0000c00 Active datum:N-31 Actual(a)91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 2/11/2016 00:00 - 02:30 2.50 DRILL P PROD1 RUN IN HOLE ON ELEVATORS WITH 6-1/8" DRILLING ASSEMBLY FROM 9700'MD TO BOTTOM AT 11766'MD -RUNNING SPEED 40-60 FPM IN OPEN HOLE (NO HOLE ISSUES) -REAM DOWN LAST STAND AND EASE BIT TO BOTTOM -MINIMAL LOSSES DURING TRIP(-2 BPI-I) 02:30 - 06:00 3.50 DRILL P PROD1 DIRECTIONAL DRILL 6-1/8"PRODUCTION HOLE FROM 11766'MD TO 12000'MD(234'IN 3.5 HRS=67 FPH WITH CONNECTIONS) -INSTANTANEOUS ROP=50-150 FPH -275 GPM,1765 PSI,140 RPM,11 KFT-LBS OFF BOTTOM TORQUE,12 KFT-LBS ON BOTTOM,5-10 KLBS WOB -PU 195K,SO 140K,ROT 155K -MW IN/OUT=8.7 PPG -SURVEY EVERY 30'DUE TO>5 DLS.NO BACKREAMING. -MINOR DYNAMIC LOSS RATE 06:00 - 12:00 6.00 DRILL P PROD1 DIRECTIONAL DRILL 6-1/8"PRODUCTION HOLE FROM 12000'MD TO 12444'MD(444'IN 6 I HRS=74 FPH WITH CONNECTIONS) "-INSTANTANEOUS ROP=150 FPH -275 GPM,1825 PSI,140 RPM,11 KFT-LBS OFF BOTTOM TORQUE,13 KFT-LBS ON BOTTOM,5-10 KLBS WOB -PU 194K,SO 132K,ROT 154K -MW IN/OUT=8.7 PPG -SURVEY EVERY 30'DUE TO>5 DLS.NO BACKREAMING. -MINOR DYNAMIC LOSS RATE 1 PUMP 40 BBL HI-VIS SWEEP AT 12220'MD: MINIMAL INCREASE OVER BASELINE CUTTINGS RETURNS 12:00 - 18:30 6.50 DRILL P PROD1 DIRECTIONAL DRILL 6-1/8"PRODUCTION HOLE FROM 12444'MD TO 12800'MD(356'IN 6.5 HRS=55 FPH WITH CONNECTIONS) -INSTANTANEOUS ROP=75-150 FPH -275 GPM,1820 PSI,140 RPM,11 KFT-LBS OFF BOTTOM TORQUE,13 KFT-LBS ON BOTTOM,7-10 KLBS WOB -PU 200K,SO 135K,ROT 155K -MW IN/OUT=8.7 PPG -SURVEY EVERY 30'DUE TO>5 DLS.NO BACKREAMING. -MINOR DYNAMIC LOSS RATE 18:30 - 19:00 0.50 DRILL P PROD1 CIRCULATE BOTTOMS UP FOR SAMPLES AT 12800'MD PER GEO -RECIPROCATE 30'AT 1000 FPH -275 GPM,1800 PSI,60 RPM,9 KFT-LBS TQ SAMPLES CONFIRM STILL DRILLING ABOVE HOT Printed 3/7/2016 9:24.47AM Lcz Common Well Name:N-31 AFE No Event Type:DRL-ONSHORE(DON) Start Date:1/15/2016 End Date:2/14/2016 X3-017FD-C:(7,241,748.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8:00:00PM Rig Release.2/18/2016 Rig Contractor:PARKER DRILLING CO. UWI:50029xxxxx00 Active datum:N-31 Actual©91.05usft(above Mean Sea Level) Date From-To Hrs Task j Code NPT NPT Depth Phase Description of Operations (hr) (usft) 19:00 - 00:00 5.00 DRILL P PROD1 DIRECTIONAL DRILL 6-1/8"PRODUCTION HOLE FROM 12800'MD TO 13044'MD(244'IN 5 HRS=49 FPH WITH CONNECTIONS) -INSTANTANEOUS ROP=50-150 FPH 275 GPM,1875 PSI,140 RPM,11 KFT-LBS OFF BOTTOM TORQUE,13 KFT-LBS ON BOTTOM,12 KLBS WOB PU 193K,SO 136K,ROT 154K -MW IN/OUT=8.7 PPG SURVEY EVERY 30'DUE TO>5 DLS.NO BACKREAMING. MINOR DYNAMIC LOSS RATE PUMP 40 BBL HI-VIS SWEEP AT 12850'MD. MINIMAL INCREASE OVER BASELINE CUTTINGS RETURNS ACTUAL DAILY DRILLING TIME=11.5 HR 2/12/2016 00:00 03:00 3.00 DRILL P PROD1 DIRECTIONAL DRILL 6-1/8"PRODUCTION HOLE FROM 13044'MD TO 13177'MD (133'IN 3 HRS=44 FPH WITH CONNECTIONS) INSTANTANEOUS ROP=40-120 FPH 275 GPM,1930 PSI,140 RPM,12 KFT-LBS OFF BOTTOM TORQUE,15 KFT-LBS ON BOTTOM,10-15 KLBS WOB -PU 205K,SO 133K,ROT 147K -MW IN/OUT=8.7 PPG -SURVEY EVERY 30'DUE TO>5 DLS.NO BACKREAMING. -MINOR DYNAMIC LOSS RATE EXPERIENCE INCREASED PUMP PRESSURE AND LOSS OF ROP AT 13177'MD -SIMILAR RESPONSE TO PREVIOUS WORN BIT RUN IN SECTION -DOWNLINK TO RELAX RSS RIBS AND MAKE MULTIPLE ATTEMPTS TO REENGAGE BIT WITH NO SUCCESS -CONSULT WITH ODE AND AGREE TO POOH FOR BIT CHANGE -CONSULT WITH ASSET TEAM AND DECIDE TO MAKE A BIT TRIP FOR LAST-200'WITHIN POLYGON 03:00 - 04:30 1.50 DRILL P PROD1 CIRCULATE HOLE CLEAN PRIOR TO BIT TRIP WITH 2 BOTTOMS-UP -275 GPM,1880 PSI -140 RPM,10 KFT-LBS TQ 04:30 - 10:30 6.00 DRILL P PROD1 PULL OUT OF HOLE ON ELEVATORS WITH DRILLING ASSEMBLY FROM 13177'MD TO TOP OF BHA AT 547'MD -MONITOR WELL FOR 10 MIN ON BOTTOM AND AT SHOE(NO FLOW) -NO HOLE ISSUES -STATIC LOSS RATE AT-4 BPH DURING TRIP Printed 3/7/2016 9:24:47AM A 85 rmam Common Well Name:N-31 AFE No Event Type:DRL-ONSHORE(DON) I Start Date:1/15/2016 End Date:2/14/2016 X3-017FD-C:(7,241,748.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8:00:00PM Rig Release.2/18/2016 Rig Contractor:PARKER DRILLING CO. UWI:50029r000a00 Active datum:N-31 Actual @91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase I Description of Operations (hr) (usft) 10:30 - 13:00 2.50 DRILL P PROD1 PULL OUT OF HOLE WITH 6-1/8"DRILLING BHA#9 FROM 547'MD TO SURFACE MONITOR WELL FOR 10 MINUTES(NO FLOW) PERFORM PJSM -RACK BACK HWDP -UNLOAD NUKES DOWNLOAD MWD TOOL -6-1/8"HCC T406SX GRADE: 8-8-RO-A-X-1-JD-PP 13:00 - 15:00 2.00 DRILL P PROD1 MAKE UP 6-1/8"DRILLING BHA#10 FROM i SURFACE TO 547'MD -PERFORM PJSM -MAKE UP RE-RUN 6-1/8"HYC SKH613M PDC -INCLUDE AUTOTRAK RSS,ONTRAK MWD (UPLOAD TOOL),SDN(LOAD NUKES) 15:00 - 15:30 0.50 DRILL P PROD1 SERVICE TOP DRIVE AND RIG FLOOR EQUIPMENT 15:30 - 21:30 6.00 DRILL P PROD1 RUN IN HOLE ON ELEVATORS WITH 6-1/8" DRILLING ASSEMBLY FROM TOP OF BHA AT 547'MD TO BOTTOM AT 13177'MD -RUNNING SPEED:150 FPM IN CASING,60 FPM IN OPEN HOLE -SHALLOW HOLE TEST MWD AT 1800'MD (PASS) -TIGHT HOLE AT 12560'MD:WORK THROUGH WITH 30K DOWN,BACKREAM CLEAN AND RUN THROUGH WITH NO ISSUE -REAM DOWN LAST STAND AND EASE BIT TO BOTTOM -STATIC LOSS RATE AT-4 BPH DURING TRIP 21:30 - 00:00 2.50 DRILL P PROD1 DIRECTIONAL DRILL 6-1/8"PRODUCTION HOLE FROM 13177'MD TO 13300(123'IN 2.5 HRS=49 FPH WITH CONNECTIONS) -INSTANTANEOUS ROP=50-150 FPH -275 GPM,1860 PSI,140 RPM, 11 KFT-LBS OFF BOTTOM TORQUE,14 KFT-LBS ON BOTTOM,10 KLBS WOB -PU 197K,SO 134K,ROT 151K -MW IN/OUT=8.7 PPG -SURVEY EVERY 30'DUE TO>5 DLS.NO BACKREAMING. MINOR DYNAMIC LOSS RATE ACTUAL DAILY DRILLING TIME=4.2 HR 2/13/2016 00:00 - 06:30 6.50 DRILL P PROD1 DIRECTIONAL DRILL 6-1/8"PRODUCTION HOLE FROM 13300'MD TO SECTION TD AT 13502'MD(202'IN 6.5 HRS=31 FPH WITH CONNECTIONS) -INSTANTANEOUS ROP=25-75 FPH -275 GPM,1800 PSI,140 RPM, 11 KFT-LBS OFF BOTTOM TORQUE,14 KFT-LBS ON BOTTOM,10 KLBS WOB -PU 197K,SO 134K,ROT 151K -MW IN/OUT=8.7 PPG -SURVEY EVERY 30'DUE TO>5 DLS.NO BACKREAMING. -MINOR DYNAMIC LOSS RATE Printed 3/7/2016 9:24:47AM North America-ALASKA-BP • - Page 40 of 41) Operation Summary Report ./.�,� ,,...�/,S/f:s/6 F;.�',.,,.;F;/„�:'� �� ... ' is %. .,_:Ev- f - Common Well Name:N-31 I AFE No Event Type:DRL-ONSHORE(DON) I Start Date:1/15/2016 End Date:2/14/2016 'X3-017FD-C:(7,241,748.00) l Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8:00:00PM Rig Release:2/18/2016 Rig Contractor PARKER DRILLING CO. UWI:50029x oc00 Active datum:N-31 Actual l 91.05usft(above Mean Sea Level) Date From-To Hrs Task Code I NPT NPT Depth Phase Description of Operations (hr) (usft) 06:30 - 09:30 3.00 DRILL P PROD1 CIRCULATE HOLE CLEAN WITH 3.5 BOTTOMS UP -275 GPM,1770 PSI -120 RPM,9K TORQUE -RECIPROCATE STAND WHILE CIRCULATING -PUMP 35 HIGH VIS SWEEP,100%INCREASE IN CUTTINGS BACK AT SHAKERS 09:30 - 13:30 4.00 DRILL P PROD1 "PULL OUT OF THE HOLE ON ELEVATORS FROM 13502'MD TO 7"CASING SHOE AT 9345' MD -MONITOR WELL FOR 10 MIN PRIOR TO PULLING OFF BOTTOM AND AT CASING SHOE (STATIC) -OBSERVED 20-30K DRAG FROM 12435 TO 11450'MD,WIPED TIGHT SPOTS AND CONTINUED TO TRIP OUT OF THE HOLE I--3 BPH LOSSES PU 190K,SO 150K 13:30 - 17:30 4.00 DRILL P ' PROD1 I RUN IN THE HOLE FROM 7"CASING SHOE AT 9345'MD TO TD AT 13502'MD -CIRCULATE 1 DP VOLUME AT CASING SHOE. 255 GPM,1445 PSI 1-SERVICE TOPDRIVE AND RIG FLOOR r EQUIPMENT AT SHOE -MONITOR WELL FOR 15 MIN PRIOR TO RUNNING IN THE HOLE(STATIC) --5 BPH LOSSES -PU 190K,SO 133K -NO ISSUES RUNNING IN OPEN HOLE TO BOTTOM 17:30 - 19:30 2.00 DRILL P PROD1 CIRCULATE HOLE CLEAN WITH 3 BOTTOMS UP -275 GPM,1845 PSI -120 RPM,7K TORQUE _-RECIPROCATE STAND WHILE CIRCULATING 19:30 - 00:00 4.50 DRILL P PROD1 PULL OUT OF THE HOLE ON ELEVATORS FROM TD AT 13502'MD TO 4280'MD -MONITOR WELL FOR 10 MIN PRIOR TO PULLING OFF BOTTOM AND AT CASING SHOE (STATIC) -PUMP DRY JOB INSIDE SHOE --1 BPH LOSSES -PU 197K,SO 134K 2/14/2016 00:00 - 01:30 1.50 DRILL P PROD1 PULL OUT OF HOLE ON ELEVATORS FROM 4208'MD TO TOP OF BHAAT 546'MD 1 BPH LOSSES PU 55K,SO 55K AT 546'MD Printed 3/7/2016 9:24:47AM i% Common Well Name:N-31 AFE No Event Type:DRL-ONSHORE(DON) Start Date:1/15/2016 End Date:2/14/2016 X3-017FD-C:(7,241,748.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No..PARKER 272 Spud Date/Time:1/17/2016 8:00:00PM Rig Release 2/18/2016 Rig Contractor:PARKER DRILLING CO. UWI:50029xxxxx00 Active datum:N-31 Actual©91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 01:30 05:00 3.50 DRILL P PROD1 LAY DOWN 6-1/8"DRILLING BHA#10 FROM 546'MD TO SURFACE -MONITOR WELL FOR 10 MINUTES(NO FLOW) PERFORM PJSM -RACK BACK HWDP,LAY DOWN JARS AND PICK UP SINGLE HWDP FOR LINER RUN UNLOAD NUKES -6-1/8"HYCALOG SKH613 GRADE: 5-7-BT-S-X-I-RO-TD CLEAN AND CLEAR RIG FLOOR COMPLETE WEEKLY BOP FUNCTION TEST I I HOLD UNANNOUNCED KICK WHILE TRIPPING DRILL WITH NON-SHEARABLES ACROSS THE STACK WITH AAR ***END N-31 DON EVENT*** Printed 3/7/2016 9:24:47AM • • 44;" North America-ALASKA BPS �� x Operation Summary Report r Common Well Name:N-31 AFE No Event Type:COM-ONSHORE(CON) Start Date:2/14/2016 End Date:2/18/2016 X3-017FD-C:(2,658,480.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8:00:00PM Rig Release:2/18/2016 Rig Contractor.PARKER DRILLING CO. UWI:50029xxxxx00 Active datum:N-31 Actual @91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 2/14/2016 05:00 - 06:30 1.50 CASING P RUNPRD RIG UP TO RUN 4-1/2"LINER CHANGE OUT ELEVATORS RIG UP AIR SLIPS RIG UP DOUBLESTACK CASING TONGS -PJSM 06:30 - 21:30 15.00 CASING P RUNPRD I RUN 4-1/2",12.6#,13CR-85,VAMTOP LINER TO FROM SURFACE TO 4294'MD -CHECK FLOATS -USE JET LUBE SEAL GUARD PIPE DOPE -TORQUE CONNECTIONS TO 4400 FT-LBS -RUN 2 FLOATING CENTRALIZERS ON JOINTS 1-95 -FILL LINER EVERY 10 JOINTS -PU 87K,SO 80K MAKE UP LINER HANGER/PACKER ASSEMBLY -ADD PAL MIX -CIRCULATE 1X LINER VOLUME AT 5 BPM, 360 PSI CONTINUE IN HOLE TO 9345'MD(7"SHOE) ' ON 4"DRILL PIPE -RIH AT 90 FT/MIN FROM 4294'MD TO 9345' MD -CIRCULATE 1.5X DRILL PIPE AND LINER VOLUME AT 5 BPM,620 PSI PU 164K,SO 136K RUN INTO OPEN HOLE WITH LINER FROM 7" SHOE TO TD AT 13502'MD I-BREAK CIRCULATION EVERY 10 STANDS OBTAIN PU/SO WEIGHTS EVERY 10 STANDS I-NO HOLE ISSUES TAG BOTTOM ON DEPTH AT 13502'MD AND PICK UP 2'OFF BOTTOM TO START CIRCULATING -FINAL PU 197K,SO 134K MUD WEIGHT:8.7 PPG IN,8.7 PPG OUT -MUD LOSSES WHILE RIH:23 BBLS -TOP OF LINER AT 9169'MD SIMOPS:MIRU SLB CEMENTERS 21:30 - 00:00 2.50 CASING P RUNPRD STAGE UP TO CEMENTING RATE IN 1 BPM INCREMENTS TO FINAL RATE OF 5 BPM -@ 2 BPM,600 PSI,1%RETURN FLOW -@ 3 BPM,740 PSI,2%RETURN FLOW -@ 4 BPM,860 PSI,3%RETURN FLOW -@ 5 BPM,1075 PSI,4%RETURN FLOW -CONDITION MUD TO 8.7 PPG,5 PV,16 YP -INITIAL PRESSURE AT CEMENTING RATE: 1075 PSI -FINAL PRESSURE AT CEMENTING RATE AFTER HOLE CONDITIONED:1000 PSI -CIRCULATE TOTAL OF 3 TIMES BOTTOMS-UP -RECIPROCATED PIPE 15 FT AT SURFACE AT 500 FT/MIN -MUD LOSSES WHILE CIRCULATING:25 BBL Printed 3/7/2016 9:25.25AM Page 2 of 7 peratiorn Summary Report w Common Well Name.N-31 AFE No Event Type:COM-ONSHORE(CON) Start Date:2/14/2016 I End Date:2/18/2016 X3-017FD-C:(2,658,480.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8:00:00PM Rig Release.2/18/2016 Rig Contractor:PARKER DRILLING CO. UWI:50029xxxxx00 Active datum:N-31 Actual @91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) ' 2/15/2016 00:00 - 05:00 5.00 CEMT P RUNPRD CEMENT4-1/2"PRODUCTION LINER AS FOLLOWS: -PJSM -FILL LINES WITH WATER AND PRESSURE TEST TO 250 PSI LOW/4500 PSI HIGH FOR 5 MINUTES EACH -PUMP 30 BBLS OF 12 PPG MUDPUSH II SPACER©5 BPM PUMP 99.8 BBLS OF 15.8 PPG CLASS G TAIL BPM,EXCESS VOLUME 30% (YIELD 1.17 CU5.FT/SK) -RECIPROCATE PIPE 15 FT AT SURFACE WHILE PUMPING CEMENT AT 5 BPM -WASH 10 BBL LINER PILL ACROSS TOP OF DART -DROP DRILL PIPE WIPER DART PERFORM DISPLACEMENT WITH SLB CEMENTERS -DISPLACEMENT FLUID:100 BBLS OF 8.6 PPG LINER PILL FOLLOWED BY 57.3 BBL OF 8.7 PPG QUIKDRIL -83 BBL LINER PILL DISPLACED AT 5 BPM, -10 BBL LINER PILL DISPLACED AT 3 BPM TO -LATCH LATCH UP CONFIRMED AT 93 BBLS DISPLACED -RECIPROCATE PIPE 15 FT AT SURFACE DURING DISPLACEMENT UNTIL DART LATCH (PARK AT SET DEPTH DUE TO INCREASING PU WEIGHT) -DISPLACE WITH 7 BBL LINER PILL FOLLOWED BY QUICKDRIL AT 5 BPM -REDUCE RATE TO 2 BPM PRIOR TO PLUG BUMP:FINAL CIRCULATING PRESSURE 2155 PSI -TOTAL DISPLACEMENT VOLUME TO BUMP: 157.3 BBLS -TOTAL LOSSES FROM CEMENT EXIT SHOE TO CEMENT IN PLACE:6 BBLS CEMENT IN PLACE:02:15 -INCREASE PRESSURE TO 3000 PSI TO SET HANGER AFTER PLUG BUMP -CHECK FLOATS-GOOD -PRESSURE UP TO RELEASER LINER RUNNING TOOL(5 ATTEMPTS-NO SUCESS) -USE LEFT HAND RELEASE TO RELEASE RUNNING TOOL -PU TO EXPOSE DOG SUB AND SET DOWN ON LINER TOP 23K -PU TO REMOVE RS PACK-OFF AND CIRCULATE EXCESS CEMENT OFF LINER TOP -PU RUNNING TOOL ABOVE LINER TOP AND MARK NO-GO.CIRCULATE 1X BU AT 12 BPM, 1700 PSI --15 BBLS OF EXCESS CEMENT TO SURFACE ON BOTTOMS UP 500 PSI COMPRESSIVE STRENGTH AT-02 00 ON 02/16/16(23.75 HR) Printed 3/7/2016 9:25:25AM Wert" fleiVb•AIVAP North America ALASKA BR Z"', • fJ Page 3 of 7 Operation Summary Report Common Well Name N-31 !AFE No Event Type:COM-ONSHORE(CON) Start Date:2/14/2016 I End Date:2/18/2016 X3-017FD-C:(2,658,480.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8:00:00PM Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. UWI:50029xxxxx00 Active datum:N-31 Actual @91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 05.00 - 09:30 I 4.50 CEMT P RUNPRD DISPLACE WELLBORE ABOVE LINER TOP TO 8.5 PPG BRINE. CLEAN UNDER SHAKERS AND PITS FOR MUD SWAP. -12 BPM,1730 PSI ICP,2180 PSI FCP, RECIPROCATING 60'STROKES -FLOWCHECK WELL FOR 10 MIN PRIOR TO PULLING OFF BOTTOM(STATIC) SIMOPS: LAYDOWN 4"DRILLPIPE STANDS WITH OFFLINE EQUIPMENT. 09:30 - 14:30 5.00 CASING P RUNPRD PULL OUT OF HOLE WITH LINER RUNNING TOOLS FROM TOL AT 9168'MD TO SURFACE INITIAL PU WEIGHT ON BOTTOM=177 KLBS, I SLACKOFF=145 KLBS FLOWCHECK WELL FOR 10 MIN PRIOR TO j !PULLING BHA THROUGH STACK(STATIC) '-BAKER REP CONFIRMS PACKER SET BY INSPECTING DOG SUB. TOOL INSPECTION I ALSO CONFIRMS LEFT-HANDED RELEASE WORKED AS REQUIRED. 14:30 - 15:30 1.00 CLEAN P RUNPRD MAKEUP AND RUN IN HOLE WITH 7" I CLEANOUT ASSEMBLY FROM SURFACE TO 1405'OVERALL LENGTH. -FLOWCHECK WELL PRIOR TO RIH(STATIC) 5.188"GAUGE POLISH MILL,6"NO-GO 11.5' BACK TO CONIRM LINER TOP,PORTED FLOAT,DOUBLE 6-1/8"WATERMELON MILLS, 11 TS 4"HWDP AND HYDRAULIC JARS NOTE: UNPLANNED CLEANOUT RUN MADE TO UTILIZE WAITING ON CEMENT TIME BEFORE LINER PRESSURE TEST(-24 HRS TO 1000 PSI COMPRESSIVE STRENGTH) 15:30 - 19:00 3.50 CLEAN P RUNPRD TRIP IN HOLE WITH 7"CASING CLEANOUT ASSEMBLY FROM BHAAT 405'MD TO 100' ABOVE LINER TOP -SLOW RIH SPEED TO 40 FPM 100'ABOVE TBR 19:00 - 20:00 1.00 CLEAN P RUNPRD POLISH 7"CASING AT PLANNED PACKER SET DEPTH FROM 9040'MD TO 9060'MD -RECIPROCATE STRING MILLS ACROSS PLANNED SET DEPTH 5 TIMES -290 GPM,840 PSI -80 RPM,4K TQ CLEANOUT TBR WITH POLISH MILL '-VERIFY NO-GO ON LINER TOP AT 9168'MD PRIOR TO TBR CLEANOUT -NO INDICATIONS OF DEBRIS AT PACKER SET DEPTH OR IN TBR 20:00 - 21:00 1.00 CLEAN P RUNPRD CIRCULATE BOTTOMS-UP STARTING INSIDE TBR 290 GPM,1080 PSI -20 RPM,3K TQ -PUMP 30 BBL HI-VIS SWEEP:NO DEBRIS RETURNS -SLOWLY PULL OUT OF TBR,RACK BACK ONE STAND 21:00 - 22:00 1.00 CLEAN I P RUNPRD ;SLIP AND CUT 81'DRILL LINE CALIBRATE BLOCKS SERVICE TOP DRIVE AND RIG FLOOR EQUIPMENT Printed 3/7/2016 9:25.25AM North America-ALASKA-BP Page 4 of 7 operation Summary Report Common Well Name N-31 AFE No Event Type:COM-ONSHORE(CON) Start Date:2/14/2016 End Date:2/18/2016 X3-017FD-C:(2,658,480.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8:00:00PM Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. I UWI:50029x000a00 Active datum:N-31 Actual @91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 22:00 - 00:00 2.00 CLEAN P RUNPRD PULL OUT OF HOLE ON ELEVATORS WITH 7" CASING CLEANOUT ASSEMBLY TO 4500'MD AT MIDNIGHT -MONITOR WELL FOR 10 MIN:STATIC 2/16/2016 00:00 - 02:00 2.00 CLEAN P RUNPRD PULL OUT OF HOLE ON ELEVATORS WITH 7" CASING CLEANOUT ASSEMBLY FROM 4500' MD TO TOP OF BHAAT 405'MD 02:00 - 03:30 1.50 CLEAN P RUNPRO LAY DOWN 7"CASING CLEANOUT BHA FROM 405'MD TO SURFACE MONITOR WELL FOR 10 MIN.STATIC IAYDOWN HWDP STRING MILLS AND POLISH MILL IN GOOD CONDITION -NO-GO INDICATES LANDING ON LINER TOP 03:30 - 05:00 1.50 CASING P RUNPRD PRESSURE TEST 41/2"LINER AND LAP TO 250 PSI LOW FOR 5 MIN/3500 PSI HIGH FOR 30 MIN(PASS)-SEE ATTACHED CHART -LOST 0 PSI FIRST 15 MIN,LOST 0 PSI SECOND 15 MIN -BBL IN/OUT:5.5 BBL 05 00 - 07:00 2.00 RUNCOM P RUNCMP RIG UP TO RUN 4-1/2"PRODUCTION TUBING CLEAN AND CLEAN RIG FLOOR -RIG UP DOYON CASING TOOLS -PULL WEAR RING 07:00 - 20:30 13.50 RUNCOM, P RUNCMP RUN 4-1/2",12.6#,13CR-85,PRODUCTION TUBING TO PLANNED SET DEPTH AT 9174'MD -PJSM -AVERAGE-22 JT/HR -BAKERLOKALL CONNECTIONS BELOW PRODUCTION PACKER -USE JET LUBE SEAL GUARD PIPE DOPE -TORQUE CONNECTIONS TO 4440 FT-LBS _ -RUN IN HOLE AT 90 FT/MIN PER HES REP -TAG BOTTOM OF TBR ON DEPTH AT 9180' ,MD,PICK UP AND RETAG BOTTOM OF TBR FOR CONFIRMATION, PICK UP AND SPACE OUT TO MIDDLE OF TBR AT 9174'MD -LAND HANGER AND FMC REP RUN IN LOCK DOWN SCREWS FINAL PU 150K,SO 114K,PARKER 272 BLOCK WEIGHT 35K -BRINE WEIGHT:8.5 PPG IN,8.5 PPG OUT LOSSES WHILE RIH:0 BBLS PERFORM UNANNOUNCED KICK WHILE TRIPPING DRILL WHILE RUNNING TUBING WITH MR Printed 3/7/2016 9:25:25AM Common Well Name:N-31 AFE No Event Type:COM-ONSHORE(CON) Start Date:2/14/2016 End Date.2/18/2016 X3-017FD-C:(2,658,480.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No..PARKER 272 Spud Date/Time:1/17/2016 8:O0.00PM Rig Release:2/18/2016 Rig Contractor.PARKER DRILLING CO. UWI:50029xxxxx00 Active datum:N-31 Actual @91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 20:30 - 23:00 2.50 RUNCOM P RUNCMP REVERSE CIRCULATE COMPLETION FLUIDS AS FOLLOWS: -142 BBL CLEAN 8.5 PPG SEAWATER (TUBING VOLUME+WLEG TO PRODUCTION PACKER IN ANNULUS) -96 BBL CLEAN 8.5 PPG SEAWATER TREATED WITH CORROSION INHIBITOR(PRODUCTION PACKER TO GLM#7 IN ANNULUS) -73 BBL CLEAN 8.5 PPG SEAWATER(GLM#7 TO SURFACE IN ANNULUS) -PUMP ADDITIONAL 5 BBL DOWN IA SHUT DOWN PUMPS AND PUMP 5 BBL DOWN TUBING TO WASH OFF RHC PLUG PROFILE -ALL SEAWATER HEATED TO 120°F -4 BPM,660 PSI SIMOPS:LAY DOWN 4"DP OFFLINE AND LOAD TUBING FOR NEXT WELL 23:00 - 00:00 1.00 RUNCOM N RREP 13,502.00 RUNCMP TEST TUBING TO 250 PSI LOW FOR 5 MIN (FAIL) -DROP BALL AND ROD AND ALLOW TO FALL FOR 15 MIN PER HES REP -FAIL LOW PRESSURE TEST TO 250 PSI, INSPECT FOR SURFACE LEAKS LOWER PIPE RAM DOOR SEAL(DRILLER'S L — SIDE)LEAKING — — 2/17/2016 00:00 - 02:30 2.50 RUNCOM N RREP 13,502.00 RUNCMP I TROUBLESHOOT LOWER PIPE RAM DOOR SEAL LEAK -DISCUSS PLAN FORWARD WITH WOS, WELL SUPT,ETL BARRIERS IN PLACE TO BREAK CONTAINMENT: -TESTED 4-1/2"PRODUCTION LINER(NO PERFORATIONS) -TESTED 4-1/2"X 7"LINER TOP PACKER TESTED 7"CASING AND PACKOFF KWF 8.5 PPG SEAWATER(MONITORED STATIC FOR>12 HRS) SIMOPS:LAY DOWN 4"DP OFFLINE AND LOAD TUBING FOR NEXT WELL 02:30 - 05.00 2.50 RUNCOM N RREP 13,502.00 RUNCMP CHANGE OUT LOWER PIPE RAM DOOR SEAL (DRILLER'S SIDE) -PERFORM JSAAND PJSM -RUN IN LANDING JOINT WITH FOSVAND MAKE UP TO TUBING HANGER(LOCK DOWN SCREWS ALREADY RUN IN) -CONTINUOUSLY MONITOR FOR FLOW FROM OPEN ENDED LANDING JOINT(STATIC) -CHANGE OUT DOOR SEAL -TEST NEW DOOR SEAL AGAINST UPPER RAMS TO 250 PSI LOW/3500 PSI HIGH (PASS),SEE ATTACHED CHART -LAY DOWN LANDING JOINT Printed 3/7/2016 9:25:25AM North America-ALASKA Bim` Page s of 7 Operation Summary Report` Common Well Name:N-31 AFE No Event Type:COM-ONSHORE(CON) Start Date:2/14/2016 End Date.2/18/2016 X3-017FD-C:(2,658,480.00 Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time' 1/17/2016 8:00:00PM Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. WWI:50029)ocxxt00 Active datum:N-31 Actual @91.05usft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) T (usft) 05:00 - 09:00 4.00 RUNCOM P RUNCMP TEST TUBING AND IA TO 250 PSI LOW FOR 5 MIN AND 3500 PSI HIGH FOR 30 MIN EACH -TEST TUBING(20 PSI LOST IN FIRST 15 MIN, 5 PSI LOST IN SECOND 15 MIN) OTIH INCREASINGSETPRDUC PRESSUREONPACKER ON TUBINWILE G, OBSERVE INDICATION PACKER SET AT 2000 .PSI -BLEED TUBING TO 1500 PSI -TEST IA(20 PSI LOST IN FIRST 15 MIN,10 - PSI LOST IN SECOND 15 MIN) BOTH PASSING TESTS,SEE ATTACHED TEST CHARTS -TEST APPROVED BY WELL SUPT SIMOPS:LAY DOWN 4"DP OFFLINE AND LOAD TUBING FOR NEXT WELL 09:00 - 12:30 3.50 RUNCOM P RUNCMP FREEZE PROTECT TUBING AND IA TO 2200' MD/2125'TVD SHUT VALVE -PUMPEAR BOOTH SHEAR WAYS TOALCONFIRMIN GLM SHEAR -REVERSE CIRCULATE 74 BBL OF 90°F,6.8 PPG DIESEL DOWN IA,2.5 BPM,975-1200 PSI SHUT IN AND ALLOW DIESEL TO U-TUBE FOR 1 HOUR -1 HOUR OF U-TUBING COUNTS AS MONITORING TIME TO CONFIRM WELL IS P i-337STATIC PSI OVERBALANCERIORTO TL RESERVOIR I PRESSURE(7.31 PPG AT 8570'TVD) SIMOPS:LAY DOWN 4"DP OFFLINE AND LOAD TUBING FOR NEXT WELL 12:30 - 14:00 1.50 WHSUR P RUNCMP INSTALL 4"CIW TYPE H TWC WITH DRY ROD -PRESSURE TEST TWC ABOVE AND BELOW TO 250 PSI LOW/3500 PSI HIGH FOR 5 MIN EACH(PASS),SEE ATTACHED CHART 14:00 - 15:00 1.00 RIGD P ' RUNCMP BLOW DOWN SURFACE LINES AND EQUIPMENT 15:00 - 00:00 9.00 BOPSUR P RUNCMP DN C ( PATI TONIPPLE INSTALL OWNEW BOP 13-5/8STA"5KK CAMERON INREPAR STACK NEXT WELL) -BREAK EACH FLANGE -REMOVEACCUMULATOR HOSES,CHOKE LINE,KILL LINE -CHANGE OUT HIGH PRESSURE RISER SECTIONS SIMOPS: -LAY DOWN 4"DP OFFLINE AND LOAD TUBING FOR NEXT WELL -RIG DOWN RIG FLOOR EQUIPMENT Printed 3/7/2016 9.25:25AM North America ALASKA BP 010;40 Jgogn-,:lioqtaPie,041Att * Common Well Name:N-31 AFE No Event Type:COM-ONSHORE(CON) Start Date:2/14/2016 End Date:2/18/2016 X3-017FD-C (2,658,480.00) Project:Prudhoe Bay Site:PB N Pad Rig Name/No.:PARKER 272 Spud Date/Time:1/17/2016 8:00:OOPM Rig Release:2/18/2016 Rig Contractor:PARKER DRILLING CO. UW:50029)0000c00 Active datum:N-31 Actual @91.05usft(above Mean Sea Level) Date From-To Hrs I Task Code NPT NPT Depth Phase Description of Operations (hr) (usft) 2/18/2016 00:00 - 05:30 5.50 WHSUR P RUNCMP NIPPLE UP TUBING HEAD ADAPTER AND DRY HOLE TREE -INCIDENT:FMC REP FIRST-AID WHILE TIGHTENING ADAPTER FLANGE SOLID BODY METAL SEAL -WRENCH SLIPPED OFF AND HIT REP IN FACE RESULTING IN MINOR CUTS MAKE NOTIFICATIONS TO HSE REPS,WOS -INVESTIGATE AND PREPARE REPORTS SIMOPS: -GENERAL RIG DOWN -NIPPLE DOWN BOP 1-BRIDLE UP 05:30 - 07:30 2.00 WHSUR P RUNCMP PRESSURE TEST ADAPTER FLANGE TO 250 PSI LOW FOR 5 MIN AND 4500 PSI HIGH FOR 15 MIN(PER OCN#9) -RECEIVE APPROVAL FOR PASSING TEST FROM WELL SUPERINTENDENT CARLOS SCHIAVENATO,SEE ATTACHED CHART -FILL TREE WITH DIESEL,PRESSURE TEST - TO 250 PSI LOW,4500 PSI HIGH FOR 5 MINUTES EACH FOR A LEAK TIGHT ASSURANCE SUCK OUT TREE TO TWC.POUR 2 BOTTLES DIESEL 911 IN TREE VOID TO PREVENT FREEZING 07:30 - 12:00 4.50 ` WHSUR P RUNCMP SECURE WELL - UIMA VALVESEC ,RE COMPANIONAWFLANGERKINGSIDE,BALLWITGATE VALVE, GAUGE AND NEEDLE VALVE WITH CAP SECURE IA NON-WORKING SIDE WITH GATE VALVE,COMPANION FLANGE,NEEDLE VALVE WITH CAP OA NON-WORKING SIDE IS SECURED WITH A VR PLUG AND BULL PLUG - W GATEOAWORKING VALVE,COMPANIONSIDEISSECURED FLANGE,BALITHAL VALVE,GAUGE AND NEEDLE VALVE WITH CAP -BLEED OFF IA AND OA PRESSURE BELOW 50 PSI PRIOR TO MOVING OFF -FINAL T/I/O=0/0/0 RELEASE RIG FROM N-31 AT 12:00 ON 2/18/16 -WELLWORK TRANSFER PERMIT CLOSED OUT WITH PAD OPERATOR -HANDOVER COMPLETED WITH WELLS GROUP -ALL TREE AND WELLHEAD VALVES LEFT CLOSED TO PRESSURE GAUGES ***END N-31 CON EVENT*** Printed 3/7/2016 9:25:25AM • • N-31, Well History (Post-Rig Sidetrack) /,;„;; T/1/0=TWC/0/0. Barriers=TWC x MV. RD TEMP 2" Parker Rig Piggyback Vlaves. Installed tapped blind flanges. Torqued and PT to API specs. RD 4"TEMP#12 . Installed 4" Upper Tree serial#120688611-02. Torqued and PT to API specs. RU CIW lubricator w/ H-plug pulling tool. Stabbed onto tree. Tagged @ 125" . Removed TWC#434 . RDMO***Job Complete***. SEE LOG FOR DETAILS. Final T/1/0=VAC/0/0. NOTE: Wellbore and Annulus may be fluid packed and 2/20/2016 SSV needs to be tested 5 days within well POP as per AOGCC. Caution tags applied to well. PULL B&R FROM 9117' SLM. PULL BK-DGLV FROM STA#5 @ 6083' MD. PULL BEK-DCK FROM STA#7 @ 3912' MD. SET BK-LGLV IN STA#7 @ 3912' MD. SET BK-OGLV IN STA#5 @ 2/22/2016 6083' MD. PULL RHC-M BODY FROM XN-NIP @ 9156' MD. CTU#8, 1.50"coil, Job Scope: RPM log and Perf. MIRU Coil 8. Rig up scaffolding, new well so no well house. Man lift on location. M/U CTC, pull test 10K, M/U checks, press test 3500 psi. M/U 3.25"drift/JSN BHA. PT Lube. RIH at 60 fpm. Circ 1% KCL with Safelube to slick new chrome tubing @ min rate while RIH. Tag PBTD @ 13386 do/ 13377' up. PU off bottom and Jet 1% KCI to verify hard bottom, tagged in same spot. POH @ 80%to circulate out drilling mud and turn the well 2/26/2016 over to 1% KCI with Safelube. -SB Rate=6 hrs. - Full Rate= 10hrs. CTU #8, 1.50"coil, Job Scope: RPM log and Perf. Continue POH with 3.25" drift. Freeze protect coil tubing and production tubing. Shut down due to weather conditions. WOW 6 hrs. Cut 60' coil. PJSM. M/U WFD MHA. PJSM. M/U Baker MRPM logging tools. RIH at 50 fpm to 9250'. Wait for tool to start. WELL CONTROL DRILL. Log down at 30 fpm from 9250'to PBTD. Tag PBTD at 13373'. Log up to 8950' @ 20 fpm. Stop and paint yellow flag @ 11200'. Circulate in diesel and lube 776 from 8950'to surface in preparation for perforating. - SB Rate =4 hrs. -WE Rate =6 hrs. - 2/27/2016 Full Rate = 14 hrs. CTU#8, 1.50"coil, Job Scope: RPM log and Perf. Continue POH with Baker MRPM. Turn well over diesel and lube 776. BD MRPM. Download data. Baker has good data. Make(+)44'correction. Log shows PBTD @ 12412'. Wait on town to specify perforating intervals. Perforating interval from Anc. Geo. is 12720-12930'. 210', so 7 guns of 30'. RIH with 30' Gun#1. Correct depth at PBTD of 13411.8'. Position gun#1 at 12900-12930'. Launch 1/2"AL ball. PERFORATED 12900-12930'. POH. Lay out fired guns. PT MHA. M/U Gun#2. PT QTS. RIH with 30'gun#2. OOH controls for 2/28/2016 injector not working. Call mechanics. - Full Rate=23 hrs (1 hr NPT). CTU#8, 1.50"coil, Job Scope: RPM log and Perf. Mechanics fix controls for injector. Tag PBTD and correct depth to PBTD @ 13411.81'. PUH and perforate interval 12870' - 12900'. POH. Lay out fired guns. Cut coil. M/U 30' Gun#3. RIH. Tag PBTD. Correct depth. Position perf gun at 12840- 2/29/2016 12870'. M/U 30' Gun#4. RIH. -21 hours of full rate (3 hours NPT). CTU#8, 1.50"coil, Job Scope: RPM log and Perf. Continue RIH with 30' Gun#4. RIH. Tag PBTD. Correct depth to PBTD @ 13411.81'. PERFORATE 12810'- 12840'. POH. Lay out fired guns. M/U 30' gun#5. RIH. Tag PBTD. Correct depth to PBTD @ 13411.81'. PERFORATE 12780' - 12810'. POH. Lay out fired guns. Stack down lubricator. Change packoffs and perform chain inspection. Cut 50of coil. MU new WFD CTC and MHA. M/U 30' gun#6. RIH. - Full Rate= 3/1/2016 24 hrs. CTU #8, 1.50"coil, Job Scope: RPM log and Perf. Continue RIH with 30' Gun#6. Tag PBTD. Correct depth to PBTD @ 13411.81'. PERFORATE 12750' - 12780'. POH. NFTswab and SSV. Lay out fired guns. M/U 30' Gun #7 BHA. PT QTS' RIH with last 30' Gun#7. Correct depth to PBTD at 13411.8'. PERFORATE 12720-12750'. POH. TOTAL PERFORATED INTERVAL = 12720-12930'. 3/2/2016 210', 6 SPF. RDMO. 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N M1 . 4"i N 41 ill In N CdJ (ui/usn oct)SuiytaoN _ a • z nr b p North America - ALASKA - BP Prudhoe Bay PB N Pad N-31 N-31 N-31 Anticollision Summary Report 16 February, 2016 Fabil BAKER ACGCC OFFSET REPORT HUGHES • BP • KAI . bp Anticollision Report BAKER HUGHES Company: North America-ALASKA-BP Local Co-ordinate Reference: Well N-31 Project: Prudhoe Bay TVD Reference: N-31 Actual @ 91.05usft(Parker 272 ACTUAL) Reference Site: PB N Pad MD Reference: N-31 Actual @ 91.05usft(Parker 272 ACTUAL) Site Error: 0.00usft North Reference: True Reference Well: N-31 Survey Calculation Method: Minimum Curvature Well Error: 0.00usft Output errors are at 1.00 sigma Reference Wellbore N-31 Database: EDM R5K-Alaska PROD-ANCP1 Reference Design: N-31 Offset TVD Reference: Offset Datum Reference N-31 Filter type: NO GLOBAL FILTER:Using user defined selection&filtering criteria Interpolation Method: MD Interval 25.00usft Error Model: ISCWSA Depth Range: Unlimited Scan Method: Tray.Cylinder North Results Limited by: Maximum center-center distance of 500.00usft Error Surface: Elliptical Conic Survey Program Date 2/16/2016 From To (usft) (usft) Survey(Wellbore) Tool Name Description 83.00 919.00 Gyrodata Gyro SS(N-31) GYD-GC-SS Gyrodata gyro single shots 961.12 3,210.89 OnTrak MWD 12-1/4"(N-31) MWD+IFR+MS-WOCA MWD+IFR+Multi Station W/O Crustal 3,306.39 9,317.83 AutoTrak MWD 8-3/4"(N-31) MWD+IFR+MS-WOCA MWD+IFR+Multi Station W/O Crustal 9,381.09 13,467.89 OnTrak MWD 6-1/8"(N-31) MWD+IFR+MS-WOCA MWD+IFR+Multi Station W/O Crustal ACoCCCOoFFSETREPoCR 2/16/2016 3:14::42PM Page 2 of 4 COMPASS 5000.1 Build 61 BP • ICAO 0 bp Anticollision Report BAKER HUGHES Company: North America-ALASKA-BP Local Co-ordinate Reference: Well N-31 Project: Prudhoe Bay TVD Reference: N-31 Actual @ 91.05usft(Parker 272 ACTUAL) Reference Site: PB N Pad MD Reference: N-31 Actual @ 91.05usft(Parker 272 ACTUAL) Site Error: 0.00usft North Reference: True Reference Well: N-31 Survey Calculation Method: Minimum Curvature Well Error: 0.O0usft Output errors are at 1.00 sigma Reference Wellbore N-31 Database: EDM R5K-Alaska PROD-ANCP1 Reference Design: N-31 Offset TVD 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) GC-2 GC-2E-GC-2E-GC-2E Out of range PB N Pad N-01-N-01-N-01 2,436.15 2,325.00 460.34 40.52 420.14 Pass-Major Risk N-01-N-01A-N-01A 2,448.23 2,350.00 460.51 40.69 420.16 Pass-Major Risk N-02-N-02-N-02 2,151.92 2,050.00 413.17 34.24 379.37 Pass-Major Risk N-03-N-03-N-03 1,748.02 1,675.00 374.41 27.18 347.36 Pass-Major Risk N-04-N-04-N-04 909.73 875.00 259.57 18.31 241.26 Pass-Major Risk N-04A-N-04A-N-04A 859.69 850.00 262.07 14.17 247.90 Pass-Major Risk N-05-N-05-N-05 806.56 775.00 159.55 15.86 143.70 Pass-Major Risk N-06-N-06-N-06 604.82 575.00 60.43 10.27 50.16 Pass-Major Risk N-07-N-07-N-07 450.58 425.00 136.36 10.88 125.48 Pass-Major Risk N-07-N-07A-N-07A 440.00 425.00 136.05 10.59 125.46 Pass-Major Risk N-08-N-08-N-08 354.01 325.00 34.69 5.60 29.10 Pass-Major Risk N-08-N-08A-N-08A 354.01 325.00 34.69 5.60 29.10 Pass-Major Risk N-12-N-12-N-12 8,024.30 7,900.00 141.65 112.56 61.00 Pass-Major Risk N-14-N-14-N-14 Out of range N-14-N-14A-N-14A Out of range N-14-N-14B-N-14B Out of range N-14-N-14BPB1-N-14BPB1 Out of range N-15-N-15-N-15 404.23 400.00 402.84 7.01 395.84 Pass-Major Risk N-21-N-21-N-21 11,414.47 10,825.00 422.35 187.20 247.50 Pass-Major Risk N-21-N-21A-N-21A 11,346.08 10,775.00 427.44 180.56 264.47 Pass-Major Risk N-22-N-22-N-22 Out of range N-22-N-22A-N-22A Out of range N-22-N-22B-N-22B Out of range N-23-N-23-N-23 415.81 400.00 68.65 7.94 60.71 Pass-Major Risk N-23-N-23A-N-23A 415.81 400.00 68.65 7.94 60.71 Pass-Major Risk N-24-N-24-N-24 2,119.80 2,000.00 431.89 42.26 389.70 Pass-Major Risk N-26-N-26-N-26 389.06 375.00 166.09 5.55 160.58 Pass-Major Risk N-27-N-27-N-27 438.93 425.00 200.25 6.78 193.49 Pass-Major Risk N-28-N-28-N-28 3,827.88 3,700.00 93.46 57.28 47.88 Pass-Major Risk N-29-N-29-N-29 345.76 350.00 370.49 5.22 365.28 Pass-Major Risk N-30-N-30-N-30 349.02 350.00 98.01 5.17 92.85 Pass-Major Risk PB Q Pad 0-01-Q-01-Q-01 Out of range Q-01-Q-01 A-Q-01 A Out of range AOGCCC OFFSE ? REPOR . 2/16/2016 3:14:42PM Page 3 of 4 COMPASS 5000.1 Build 61 01...,1, • BP •• w,. `t bp Anticollision Report BAKER HUGHES Company: North America-ALASKA-BP Local Co-ordinate Reference: Well N-31 Project: Prudhoe Bay TVD Reference: N-31 Actual @ 91.05usft(Parker 272 ACTUAL) Reference Site: PB N Pad MD Reference: N-31 Actual @ 91.05usft(Parker 272 ACTUAL) Site Error: 0.O0usft North Reference: True Reference Well: N-31 Survey Calculation Method: Minimum Curvature Well Error: 0.O0usft Output errors are at 1.00 sigma Reference Wellbore N-31 Database: EDM R5K-Alaska PROD-ANCP1 Reference Design: N-31 Offset TVD Reference: Offset Datum Reference Depths are relative to N-31 Actual @ 91.05usft(Parker 272 Coordinates are relative to:N-31 Offset Depths are relative to Offset Datum Coordinate System is US State Plane 1927(Exact solution),Alaska Zone 04 Central Meridian is 150°0'0.000 W° Grid Convergence at Surface is:1.03° Ladder Plot 1 I 600- 1 1 1 J J J J J I I 1 P• III i„ 1 1 1 e 450- 1`ilk', �`jar; I 1 1 c z Qtl; I � � I 1V a�• I C ! be- ,1 _J , J J J - J ;2 I�� Iff 1@ 1 ,� Ia_ 1 - I I I ._.. co 300- ll 1 I 0 4' lim �.,_ �i.� i I � � a,150- , ,i „ !• 1 �. U -i t_� Af i) (/A 1 • I A :) J J J J J - A 1 I 0 ' i I i i 0 2000 4000 6000 8000 10000 12000 Measured Depth 2000 usn) LEGEND I GC-2E,GC-2E,GC-2E V2 -9- N-08,N-08A,N-08A V13 -9- N-23,N-23,N-23 V1 -f- N-01,N-01,N-01 V1 -e- N-12,N-12,N-12 V1 -e- N-23,N-23A,N-23A V2 -9- N-01,N-01 A,N-01 A V4 -rte• N-14,N-14,N-14 V4 -6- N-24,N-24,N-24 V1 -34I- N-02,N-02,N-02 V1 -3*- N-14,N-14A,N-14A V1 - F N-26,N-26,N-26 V1 -6- N-03,N-03,N-03 V1 I N-14,N-14B,N-14B V2 -4- N-27,N-27,N-27 V14 -6- N-04,N-04,N-04 V1 -4- N-14,N-14BPB1,N-14BPB1 V4 -e- N-28,N-28,N-28 VO $ N-04A,N-04A,N-04A V1 -9- N-15,N-15,N-15 V1 -t- N-29,N-29,N-29 VO -0- N-05,N-05,N-05 V1 -4- N-21,N-21,N-21 V2 -Q- N-30,N-30,N-30 VO $ N-06,N-06,N-06 V2 -e- N-21,N-21A,N-21A V2 -9- Q-01,Q-01,Q-01 V1 -8- N-07,N-07,N-07 V1 -8 N-22,N-22,N-22 V7 -4E- Q-01,Q-01A,Q-01AV1 AOGCC OFIFS EJ REPORT .. 2/16/2016 3.14:42PM Page 4 of 4 COMPASS 5000.1 Build 61 0 0 w ^ w 0 J s J 0 v O 1-5 ❑ CC x 0 CC 2 O W W 0 LU W 0 } D OC o. 8. m O O) LL W 2 OW d QN C WQH x Uu)E n 0HLZ Z o d N .rn z LU n Ua ap mwC,) O O w 0 0 LUNco Xm V) !/) U)J 0 a) -x > II O N N- r u) >. o �. oz. c.',' O O r - a) LL 0 LL 0 N Cl) 2 N N _N N N _- O 0 p N 0 0 m 0 X N W > N N > O O O NN0 ?0- to N N ya N L) L 2 2^ ^ 0 m a— N CO uN CT) ,X OU O Oa) X ❑ 0 0N 0 0 LU O 00-- U N 17a / -c 0 Z n a) O o a a,W p E ❑ rn 0 0 LL 0 0 m us Q X % H m u) u� -__-_ «) = 1 -o c C U i -� a a) 0) V) .0 J I - N E c D —s^ c U) 0 o d a a p a p o o p a U to O D 0 0 } w 0 to O } 0 m 0 o co m 0 • N y Nj N - N m E E Dc �. ,- N 1 a1 Q Q O 0 0 d I L m 1 c O ❑ a' 1 a 7 O c J o c 0 0 r 0. 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' � • 21 1 77056 Mill APR 2 5 2016 PRINT DISTRIBUTION LIST BAKER HUGHES AOr Please sign and return one copy of this transmittal form to: COMPANY BP Exploration Alaska Inc. BP Exploration(Alaska)Inc. Petrotechnical Data Center, LR2-1 DATA LOGGED WELL NAME N-31 900 E. Benson Blvd. '4/412014 Ivl K BENDER Anchorage,Alaska 99508 FIELD Prudhoe Bay Unit to acknowledge receipt of this data. COUNTY North Slope Borough LOG TYPE GR-RES-DEN-NEU BHI DISTRICT Alaska --- LOG DATE February 13,2016 AUTHORIZED BY Paul Canizares EMAIL Paul.Canizares@bakerhughes.com TODAYS DATE April 22,2016 Revision STATUS Final Replacement: No Details: Rev. Requested by: COMPANY FIELD/ FINAL CD/DVD FINAL PRELIM LOGS (las,dlis,PDF,META, SURVEY REPORT ADDRESS(FEDEX WILL NOT DELIVER TO P.O.BOX) LOGS CGM,Final Surveys) (Compass) PERSON ATTENTION #OF PRINTS #OF THIN I b #OF COPIES #OF COPIES #OF COPIES ' 1 BP North Slope. 0 1 1 1 0 EOA,PBOC,PRB-20(Office 109) D&C Wells Project Aids Agatha Rutka&Barbara Glassmaker 900 E.Benson Blvd. Anchorage,Alaska 99508 2 ConocoPhillips Alaska Inc. 0 0 1 1 0 Attn:Ricky Elgarico ATO 3-344 700 G Street Anchorage,AK 99510 3 ExxonMobil,Alaska 0 1 I 1 1 0 Attn:Lynda M.Yaskell and/or Lisa Boggs 3201 C Street,Suite 505 Anchorage,AK 99503 4 State of Alaska -AOGCC 0 1 1 1 0 Attn:Makana Bender 333 W.7th Ave,Suite 100 Anchorage,Alaska 99501 5 DNR-Division of Oil&Gas *** 0 0 1 1 0 Attn:James Hyun 550 West 7th Avenue,Suite 802 Anchorage,Alaska 99501 ***Stamp"confidential"on all material deliver to DNR 6 BP Exploration(Alaska)Inc. 0 0 0 0 0 Petrotechnical Data Center,LR2-1 900 E.Benson Blvd. Anchorage,Alaska 99508 TOTALS FOR THIS PAGE: 0 3 5 TOTALS FOR ALL PAGES: 0 3 5 5 0 • •n LO v- LO LO O n N N .1WAlZ � `W O `M0 Qm= '\ -'' Om CD Q 44 111 a Q woo 1.0 f ri oriii a) IT ECD Q O = C >+ O O M CV VI = m 'a in Z — 6 t CD d N c CU i t CD Cr) O. 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CO Nc Z N N d d y N C 0 O N O E . ca -2 d O d n '- a c ra de C t CO o ir J uo L ' 2tW 7 N CO O)«d m -C aE v .c 0 i Q Q n Q N CC co co ca) °3 / Z 3 T To o C O T co LL co C c CO o O ‘0 1 a y 05 E 15 o ° d dc a d E N R Z tn 43 y W 7 u5 N O d + v R O C 7 ZO O QU U Ty M W o cn N d' Z N N a_ in m N N L _ N QQ Q V O.= Y t' d 7 M73 0) co c oo ; 0 ... U r to Q O 't d W co U >, N d m d ' OO (N Q d r (O Np' N .c c . O td 7 7 p O O 7mCo CoM 0 c 0 L N 2 co d co Z d a Z Z Z O +p+ C N a 7 c o O O 2 N 0 N) Q N N C C C -Q O 't'� Q O C M co m_V. p C �, O) c 0 ad . 3), d 9 a. N O N N co 13 N • 0 RECEIVES • 21 5 1 75 NMI APR 122010 27034 BAKER PRINT DISTRIBUTION LIST HUGHES AOGCC Please sign and return one copy of this transmittal form to: COMPANY BP Exploration Alaska Inc. BP Exploration(Alaska)Inc. Petrotechnical Data Center,LR2-1 DATA LOGGED WELL NAME N-31 900 E. Benson Blvd. '"1, /Sat/2014. Anchorage,Alaska 99508 M.K.GENDER FIELD Prudhoe Bay Unit to acknowledge receipt of this data. COUNTY North Slope Borough LOG TYPE RPM:PNC3D BHI DISTRICT Alaska --- LOG DATE_ February 28,2016 AUTHORIZED BY Paul Canizares EMAIL Paul.Canizares@bakerhudheS.com TODAYS DATE April 11,2016 Revision STATUS Final Replacement: No Details: Rev. Requested by: --- FIELD/ COMPANY FINAL CD/DVD FINAL PRELIM LOGS (las,dlis,PDF,META, SURVEY REPORT ADDRESS(FEDEX WILL NOT DELIVER TO P.O.BOX) LOGS CGM,Final Surveys) (Compass) PERSON ATTENTION #OF PRINTS #OF 'KIN I S #OF COPIES #OF COPIES #OF COPIES 4 4, 4 4 4 4 U 1 BP North Slope. I 0 0 0 I 0 0 EOA,PBOC,PRB-20(Office 109) D&C Wells Project Aids Agatha Rutka&Barbara Glassmaker 900 E.Benson Blvd. Anchorage,Alaska 99508 2 ConocoPhillips Alaska Inc. 0 1 1 I 0 0 Attn:Ricky Elgarico ATO 3-344 700 G Street Anchorage,AK 99510 3 ExxonMobil,Alaska 0 I 1 1 I 0 0 Attn:Lynda M.Yaskell and/or Lisa Boggs 3201 C Street,Suite 505 Anchorage,AK 99503 4 State of Alaska -AOGCC 0 „ 1 1 1 0 1 0 Attn:Makana Bender 333 W.7th Ave,Suite 100 Anchorage,Alaska 99501 5 DNR-Division of Oil&Gas *** 0 I 1 I 1 0 0 Attn:James Hyun 550 West 7th Avenue,Suite 802 Anchorage,Alaska 99501 ***Stamp"confidential"on all material deliver to DNR 6 BP Exploration(Alaska)Inc. 0 0 I 0 0 I 0 Petrotechnical Data Center,LR2-1 900 E.Benson Blvd. Anchorage,Alaska 99508 Attn:David Itter TOTALS FOR THIS PAGE: 0 4 4 0 0 TOTALS FOR ALL PAGES: 0 4 4 0 0 PTO Z15 - / 7--S Loepp, Victoria T (DOA) From: Kosaka,Takahiro <Takahiro.Kosaka@bp.com> Sent: Monday, February 08, 2016 8:56 AM To: Quick, Michael J (DOA) Cc: Endacott, Mary S; Lastufka,Joseph N; Loepp,Victoria T(DOA);Schwartz,Guy L(DOA); Rosenbaum,Jesse E Subject: RE: N-31 (PTD#215-175) -7" cement job Attachments: N-31 Production hole FIT.pdf; N-31 7in casing pressure test chart.pdf Mike, Two charts were attached. 7" casing test was performed after cleanout cement prior to drill out shoe track. FIT after drilled new formation below 7" casing is labelled "7" INT FIT Test". Please let me know if you need anything else. Thanks, Takahiro From: Quick, Michael 3 (DOA) [mailto:michael.quick@alaska.gov] Sent: Monday, February 08, 2016 8:07 AM To: Kosaka,Takahiro Cc: Endacott, Mary S; Lastufka,Joseph N; Loepp,Victoria T(DOA); Schwartz, Guy L(DOA); Rosenbaum,Jesse E Subject: RE: N-31 (PTD# 215-175) - 7" cement job Takahiro— Please provide the casing test and FIT chart and data for our review. Glad to hear things are back on plan. Mike Michael Quick Sr. Petroleum Engineer Alaska it and Gas Conservation Commission 333 West 7th Avenue Anchorage,AK 99501 (907)793-1231(phone) (907)276-7542(fax) mike.quickPalaska.gov CONFIDENTIALITY NOTICE:This e-mail message, including any attachments, contains information from the Alaska Oil and Gas Conservation Commission (AOGCC), State of Alaska and is for the sole use of the intended recipient(s). It may contain confidential and/or privileged information. The unauthorized review, use or disclosure of such information may violate state or federal law. If you are an unintended recipient of this e-mail, please delete it, without first saving or forwarding it, and, so that the AOGCC is aware of the mistake in sending it to you, contact Mike Quick at 907-793-1231 or mike.quick@alaska.gov. From: Kosaka,Takahiro [mailto:Takahiro.Kosaka©bp.com] Sent: Monday, February 08, 2016 7:51 AM To: Quick, Michael J (DOA) Cc: Endacott, Mary S; Lastufka,Joseph N; Loepp,Victoria T(DOA); Schwartz, Guy L(DOA); Rosenbaum,Jesse E Subject: RE: N-31 (PTD# 215-175) - 7" cement job 1 • Mike, We performed successful FIT to 9.9 ppg EMW this morning. Everything seem to get back on track. Thanks, Takahiro From: Quick, Michael J (DOA) [mailto:michael.quick@alaska.gov] Sent: Saturday, February 06, 2016 8:55 AM To: Kosaka,Takahiro Cc: Quick, Michael 3 (DOA); Endacott, Mary S; Lastufka,Joseph N; Loepp,Victoria T(DOA); Schwartz, Guy L(DOA); Rosenbaum, Jesse E Subject: Re: N-31 (PTD# 215-175) - 7"cement job Takahiro- Thanks for the update. Did you have the lift pressure you expected when displacing the cement in the annulus? As I am sure you know,the lift pressure can help identify how much of the cement column is in place. Since there were losses and changes on this cement job, Please provide the casing pressure test data and FIT/LOT data once you have it. Notify the commission if your FIT/LOT value is less than the permitted value prior to drilling ahead so we can discuss remedial actions. Regards, Mike On Feb 6,2016,at 8:44 AM, "Kosaka,Takahiro"<Takahiro.Kosaka@bp.com>wrote: Mike, We like to provide the update on the 7" casing job. The last night we pumped 60 bbl of 15.8 ppg`G' cement though the cement retainer. - 8 bbl lost after cement exit 7" casing shoe 9345' - Estimated TOC assuming 30%open hole excess is 8067' The rig is currently preparing for BOP test. Please let me know if you have any questions. Thanks, Takahiro Kosaka BP Alaska I Drilling Engineer +1 (907)575 8588 takahiro.kosaka@bp.com <image001.png> 2 • From: Quick, Michael J (DOA) [mailto:michael.quick©alaska.gov] Sent:Thursday, February 04, 2016 6:20 PM To: Rosenbaum, Jesse E Cc: Quick, Michael J (DOA); Endacott, Mary S; Lastufka,Joseph N; Loepp, Victoria T(DOA); Schwartz, Guy L(DOA); Kosaka,Takahiro Subject: Re: N-31 (PTD# 215-175) - 7"cement job Thanks Jesse. The plan should get you back on track. Good luck. Mike On Feb 4,2016,at 6:09 PM, "Rosenbaum,Jesse E"<Jesse.Rosenbaum@bp.com>wrote: Hello Mike, Current Plan forward. 1) Drill out 7" shoe with 6-1/8" cleanout BHA. POOH. 2) PU a 7" cement retainer RIH on 4" DP and set inside existing shoe track. 3) Pump 60 bbls of 15.8 ppg "G" cement 4) Unsting from retainer 5) POOH. L/D retainer setting tool. 6) PU 6-1/8" production hole drilling BHA. Back on plan. I will be leaving the state tomorrow morning so please contact Takahiro Kosaka if you have any questions Takahiro Kosaka +1 (907)575 8588 takahiro.kosakabp.com Thanks, Jesse Rosenbaum Drilling Engineer I BP Exploration Alaska 0:907-564-51551C:406.533.8984 Jesse.rosenba umA bp.com From: Quick, Michael 3 (DOA) [mailto:michael.quick@alalaska.gov] Sent: Thursday, February 04, 2016 5:48 PM To: Endacott, Mary S Cc: Lastufka,Joseph N; Quick, Michael J (DOA); Loepp, Victoria T(DOA); Schwartz, Guy L(DOA); Rosenbaum,Jesse E; Kosaka,Takahiro Subject: Re: N-31 (PTD# 215-175) - 7" cement job Mary- Thanks for the update. Glad to hear circulation was re-established. Please provide detail on your plan forward for the cementing operation. Thanks, Mike On Feb 4,2016,at 5:03 PM, "Endacott, Mary S"<Mary.Endacott@bp.com>wrote: 3 • Guy, Mike, Update :We have drilled out cement and established circulation.Will POH for a cement retainer next. Sent from my Android phone using TouchDown (www.nitrodesk.com) Original Message From:Schwartz,Guy L(DOA) [guy.schwartz@alaska.gov] Received:Thursday,04 Feb 2016,4:14PM To: Lastufka,Joseph N [Joseph.Lastufka@bp.com]; Quick, Michael J (DOA) [michael.quick@alaska.gov]; Loepp,Victoria T (DOA) [victoria.loepp@alaska.gov] CC: Rosenbaum,Jesse E [Jesse.Rosenbaum@bp.com]; Kosaka,Takahiro [Takahiro.Kosaka@bp.com]; Endacott, Mary S [Mary.Endacott@bp.com] Subject: RE: N-31(PTD#215-175)-7" cement job Joe/Jesse, Just keep us posted on what you find once plugs and cement are milled up. If you can establish circulation then you are hopefully back on track...Victoria should be back tomorrow but in case not communicate with Mike Quick with your plans forward. Regards, Guy Schwartz Sr. Petroleum Engineer AOGCC 907-301-4533 cell 907-793-1226 office CONFIDENTIALITY NOTICE:This e-mail message,including any attachments,contains information from the Alaska Oil and Gas Conservation Commission (AOGCC),State of Alaska and is for the sole use of the intended recipient(s).It may contain confidential and/or privileged information.The unauthorized review,use or disclosure of such information may violate state or federal law.If you are an unintended recipient of this e-mail,please delete it,without first saving or forwarding it,and,so that the AOGCC is aware of the mistake in sending it to you,contact Guy Schwartz at(907-793-1226) or(Guy.schwartz@alaska.gov). From: Lastufka, Joseph N (mailto:Joseph.Lastufka@bp.com] Sent:Thursday, February 04, 2016 2:58 PM To: Quick, Michael J (DOA); Schwartz, Guy L(DOA) Cc: Rosenbaum, Jesse E; Kosaka,Takahiro; Endacott, Mary S Subject: FW: N-31 (PTD# 215-175) - 7" cement job Mike, I heard that Victoria is out and that Guy will be leaving for vacation tonight so I wanted to make sure that you were aware. If you have any questions, please let me know. Thanks, Joe 4 • • From: Rosenbaum,Jesse E Sent:Thursday, February 04, 2016 10:14 AM To: Loepp, Victoria T(DOA) (victoria.loepp(aalaska.gov) Cc: Lastufka,Joseph N; Endacott, Mary S Subject: N-31 (PTD# 215-175) - 7"cement job Hello Victoria, Rig operations were cementing 7" intermediate casing Tuesday evening on N-31.When the bottom plug landed on the landing collar,the bottom plug failed to shear at the designed differential pressure and experienced a complete packoff of the plug/float equipment.Several attempts were made to pressure up to the operating limit of 4000psi but with no success of establishing flow through the float/plug All 55 bbls of 15.8 ppg "G"cement were contained inside 7" casing (1436'ft length inside 7"). The rigimmediatelystaged a cleanout 6.125"cleanout BHA and are drillingupthe cement and plugs in an attempt to g p g P establish circulation up the annulus to perform another cement job on the 7"casing I will send an update on the planned cement volumes for the remedial once the plan has been approved internally. Please contact me if you have any questions, Jesse Rosenbaum Drilling Engineer I BP Exploration Alaska 0:907-564-5155 C:406.533.8984 jesse.rosenbauma,bp.com 5 S 0 I 11 R------- --_../- / .. --- ' - ," - 1 . / ' a --- ,:--_-.' --, -'•',T,::--,-.:',,,,,:.\--= '.;\ ':- ; 1 - '. ; - -.,-.„.. 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' I --- i - '- ' - - - -.---1:----,---.:-: ::• '., -,'/•----- / . i - - ' - I •-_,--- '-'---' .-- . • ' / - ; • . -- --, z - -- . ..' - ..., . -/ - , ,-- ...., •;- • .. - ': .------,-,c_____: _ : , t I - ' , / - m sv iv oc 'Aiii I--------- • • p-ro ZI5 - r75- Loepp, Victoria T (DOA) From: Quick, Michael J (DOA) Sent: Monday, February 08, 2016 8:07 AM To: Kosaka,Takahiro Cc: Endacott, Mary S; Lastufka,Joseph N; Loepp,Victoria T(DOA); Schwartz, Guy L(DOA); Rosenbaum,Jesse E Subject: RE: N-31 (PTD#215-175) -7" cement joba Follow Up Flag: Follow up Flag Status: Flagged Takahiro- Please provide the casing test and FIT chart and data for our review. Glad to hear things are back on plan. Mike Michael Quick Sr. Petroleum Engineer Alaska Oil and Gas Conservation Commission 333 West 7th Avenue Anchorage,AK 99501 (907)793-1231(phone) (907)276-7542(fax) mike.quickPalaska.gov CONFIDENTIALITY NOTICE:This e-mail message, including any attachments, contains information from the Alaska Oil and Gas Conservation Commission (AOGCC), State of Alaska and is for the sole use of the intended recipient(s). It may contain confidential and/or privileged information.The unauthorized review, use or disclosure of such information may violate state or federal law. If you are an unintended recipient of this e-mail, please delete it,without first saving or forwarding it, and, so that the AOGCC is aware of the mistake in sending it to you, contact Mike Quick at 907-793-1231 or mike.ciuick@alaska.gov. From: Kosaka,Takahiro [mailto:Takahiro.Kosaka@bp.com] Sent: Monday, February 08, 2016 7:51 AM To: Quick, Michael 3 (DOA) Cc: Endacott, Mary S; Lastufka,Joseph N; Loepp,Victoria T(DOA); Schwartz, Guy L(DOA); Rosenbaum,Jesse E Subject: RE: N-31 (PTD# 215-175) - 7" cement job Mike, We performed successful FIT to 9.9 ppg EMW this morning. Everything seem to get back on track. Thanks, Takahiro From: Quick, Michael 3 (DOA) [mailto:michael.quick@alaska.gov] Sent: Saturday, February 06, 2016 8:55 AM To: Kosaka,Takahiro Cc: Quick, Michael 3 (DOA); Endacott, Mary S; Lastufka,Joseph N; Loepp, Victoria T(DOA); Schwartz, Guy L(DOA); 1 • • Rosenbaum,Jesse E Subject: Re: N-31 (PTD# 215-175)- 7" cement job Takahiro- Thanks for the update. Did you have the lift pressure you expected when displacing the cement in the annulus? As I am sure you know,the lift pressure can help identify how much of the cement column is in place. Since there were losses and changes on this cement job, Please provide the casing pressure test data and FIT/LOT data once you have it. Notify the commission if your FIT/LOT value is less than the permitted value prior to drilling ahead so we can discuss remedial actions. Regards, Mike On Feb 6,2016,at 8:44 AM,"Kosaka,Takahiro"<Takahiro.Kosaka@'bp.com>wrote: Mike, We like to provide the update on the 7" casing job. The last night we pumped 60 bbl of 15.8 ppg'G'cement though the cement retainer. - 8 bbl lost after cement exit 7" casing shoe 9345' - Estimated TOC assuming 30%open hole excess is 8067' The rig is currently preparing for BOP test. Please let me know if you have any questions. Thanks, Takahiro Kosaka BP Alaska I Drilling Engineer +1 (907)575 8588 takahiro.kosaka@_bp.com <image001.png> From: Quick, Michael 3 (DOA) [mailto:michael.quick@alaska.gov] Sent:Thursday, February 04, 2016 6:20 PM To: Rosenbaum, Jesse E Cc: Quick, Michael J (DOA); Endacott, Mary S; Lastufka,Joseph N; Loepp, Victoria T(DOA); Schwartz, Guy L(DOA); Kosaka,Takahiro Subject: Re: N-31 (PTD# 215-175) - 7" cement job Thanks Jesse. The plan should get you back on track. Good luck. Mike 2 • On Feb 4,2016,at 6:09 PM, "Rosenbaum,Jesse E"<Jesse.Rosenbaum@bp.com>wrote: Hello Mike, Current Plan forward. 1) Drill out 7" shoe with 6-1/8" cleanout BHA. POOH. 2) PU a 7" cement retainer RIH on 4" DP and set inside existing shoe track. 3) Pump 60 bbls of 15.8 ppg "G" cement 4) Unsting from retainer 5) POOH. L/D retainer setting tool. 6) PU 6-1/8" production hole drilling BHA. Back on plan. I will be leaving the state tomorrow morning so please contact Takahiro Kosaka if you have any questions Takahiro Kosaka +1 (907)575 8588 takahiro.kosaka(a�bp.com Thanks, Jesse Rosenbaum Drilling Engineer(BP Exploration Alaska C.907-564-5155 I C.406.533 8984 jesse.rosenbaumbp.com From: Quick, Michael J (DOA) [mailto:michael.quick@lalaska.gov] Sent:Thursday, February 04, 2016 5:48 PM To: Endacott, Mary S Cc: Lastufka, Joseph N; Quick, Michael J (DOA); Loepp, Victoria T(DOA); Schwartz, Guy L(DOA); Rosenbaum,Jesse E; Kosaka,Takahiro Subject: Re: N-31 (PTD# 215-175) - 7" cement job Mary- Thanks for the update. Glad to hear circulation was re-established. Please provide detail on your plan forward for the cementing operation. Thanks, Mike On Feb 4,2016,at 5:03 PM,"Endacott, Mary S"<Mary.Endacott@bp.com>wrote: Guy, Mike, Update :We have drilled out cement and established circulation.Will POH for a cement retainer next. Sent from my Android phone using TouchDown (www.nitrodesk.com) Original Message From:Schwartz,Guy L(DOA) [guy.schwartz@alaska.gov] Received:Thursday,04 Feb 2016,4:14PM To: Lastufka,Joseph N [Joseph.Lastufka@bp.com];Quick, Michael J(DOA) [michael.quick@alaska.gov]; Loepp,Victoria T (DOA) [victoria.loepp@alaska.gov] 3 • • CC: Rosenbaum,Jesse E [Jesse.Rosenbaum@bp.com]; Kosaka,Takahiro [Takahiro.Kosaka@bp.com]; Endacott, Mary S [Mary.Endacott@bp.com] Subject: RE: N-31 (PTD#215-175)-7" cement job Joe/Jesse, Just keep us posted on what you find once plugs and cement are milled up. If you can establish circulation then you are hopefully back on track... Victoria should be back tomorrow but in case not communicate with Mike Quick with your plans forward. Regards, Guy Schwartz Sr. Petroleum Engineer AOGCC 907-301-4533 cell 907-793-1226 office CONFIDENTIALITY NOTICE:This e-mail message,including any attachments,contains information from the Alaska Oil and Gas Conservation Commission (AOGCC),State of Alaska and is for the sole use of the intended recipient(s).It may contain confidential and/or privileged information.The unauthorized review,use or disclosure of such information may violate state or federal law.If you are an unintended recipient of this e-mail,please delete it,without first saving or forwarding it,and,so that the AOGCC is aware of the mistake in sending it to you,contact Guy Schwartz at(907-793-1226) or(Guy.schwartz@alaska.gov). From: Lastufka,Joseph N [mailto:Joseph.Lastufka@tbp.com] Sent: Thursday, February 04, 2016 2:58 PM To: Quick, Michael J (DOA); Schwartz, Guy L(DOA) Cc: Rosenbaum, Jesse E; Kosaka,Takahiro; Endacott, Mary S Subject: FW: N-31 (PTD# 215-175) - 7" cement job Mike, I heard that Victoria is out and that Guy will be leaving for vacation tonight so I wanted to make sure that you were aware. If you have any questions, please let me know. Thanks, Joe From: Rosenbaum,Jesse E Sent:Thursday, February 04, 2016 10:14 AM To: Loepp, Victoria T(DOA) (victoria.loepp@alaska.gov) Cc: Lastufka, Joseph N; Endacott, Mary S Subject: N-31 (PTD# 215-175) - 7" cement job Hello Victoria, Rig operations were cementing 7" intermediate casing Tuesday evening on N-31.When the bottom plug landed on the landing collar,the bottom plug failed to shear at the designed differential pressure and experienced a complete packoff of the plug/float equipment. Several attempts were made to pressure up to the operating limit of 4000psi but with no 4 • S success of establishing flow through the float/plug All 55 bbls of 15.8 ppg "G" cement were contained inside 7" casing (1436'ft length inside 7"). The rig immediately staged a cleanout 6.125" cleanout BHA and are drilling up the cement and plugs in an attempt to establish circulation up the annulus to perform another cement job on the 7" casing I will send an update on the planned cement volumes for the remedial once the plan has been approved internally. Please contact me if you have any questions, Jesse Rosenbaum Drilling Engineer BP Exploration Alaska 0:907-564-51551 G:406.533.8984 jesse.rosenbaum(a�bp.com 5 • • p71 2 / -5---- Loepp, -,jLoepp, Victoria T (DOA) From: Rosenbaum,Jesse E <Jesse.Rosenbaum@bp.com> Sent Thursday,January 14, 2016 2:18 PM To: Loepp,Victoria T(DOA) Cc: Allen, Kenneth W; Endacott, Mary S; Lastufka,Joseph N Subject: RE: N-31 (PTD#215-175) Surface Hole Flow Paddle Variance&Cement Modification Follow Up Flag: Follow up Flag Status: Flagged Thank you Victoria. From: Loepp, Victoria T(DOA) [mailto:victoria.loepp@alaska.gov] Sent:Thursday, January 14, 2016 2:15 PM To: Rosenbaum,Jesse E Subject: RE: N-31 (PTD# 215-175) Surface Hole Flow Paddle Variance&Cement Modification Jesse, In reference to the approved PTD N-31 (PTD 215-175): Approval is granted to drill the first^'1000 feet of surface hole without a flow paddle per 20 AAC 25.033(j). Approval is granted to change the surface lead slurry type to the 11 ppg LiteCrete Please include this approval with your copy of the approved PTD. Thanx, Victoria Victoria Loepp Senior Petroleum Engineer State of Alaska Oil&Gas Conservation Commission 333 W.7th Ave Anchorage,AK 99501 Work: (907)793-1247 Victoria.LoeppCa?alaska.gov CONFIDENTIALITY NOTICE:This e-mail message,including any attachments,contains information from the Alaska Oil and Gas Conservation Commission (AOGCC),State of Alaska and is for the sole use of the intended recipient(s).It may contain confidential and/or privileged information.The unauthorized review,use or disclosure of such information may violate state or federal law.If you are an unintended recipient of this e-mail,please delete it,without first saving or forwarding it,and,so that the AOGCC is aware of the mistake in sending it to you,contact Victoria Loepp at(907)793-1247 or Victoria.Loeop@alaska.gov From: Rosenbaum, Jesse E [mailto:Jesse.Rosenbaum©bp.com] Sent:Thursday, January 14, 2016 1:45 PM To: Loepp,Victoria T(DOA) Cc: Endacott, Mary S; Lastufka,Joseph N; Allen, Kenneth W Subject: N-31 (PTD# 215-175) Surface Hole Flow Paddle Variance Hello Victoria, 1 i Could you help confirm if the flow paddle variance from the N-31 PTD (#215-175)was approved by your office? We normally see a hand-written variance approval on the front page as seen in the example below: Conditions of Approval. It box is checked,wet may not b• Other B®o i cs t ¢a ,?.5".;los r. t"JJ,hw/r?+ �7r�vf•x �7♦ frS� 71111 zcU ' ,isI Plow AnaAd/er +++w*Veer erD.00"difr1f14, Spade! per.1r►AAtsr.a !j) .� APPROVED BY C ,/v, /-4-60ahhotastONER Here is the N-31 PTD snapshot: tiu.ni111una ui nppIuvm. e OOx IS CneCKBo,wet may not be used to explore tor,test,or produ Other: BGP tt-St to .7566) Rs. Samples req'd: Yes C 4 yin r.,/a r ,Ur-rae2-n tee-7 5t/e 23-efilaerg4res Yes L Spacing exception req'd Yes C Approved by:ail"'417 P i COMMISSIONER hl 1P'11 I #' A rr" If you could verify this is approved,we would appreciate it. On another note,the surface interval lead cement was permitted with an 11 ppg arctic set lite IV slurry. However an internal decision to stay with an 11 ppg LiteCrete slurry was decided on after some research into the topic. 18. C+�+W Proge t' Spss�ti*aeor*a Top-Soong Deism-Harem corer(uuenary,r F.o lacer Mg p Crasiq Warta Grade Cour:era tartan MD TVD M( TVD Geviudin 308oe ) 42" 20' 1244 A•53 80' Surface Surface 90' 80' 26o ex atcac Sot Warm 12.1x4' 4.543' 4(°41 __ • 30 ' wave Sonoma 3275 3111 t IMMAMMISMIN TV.Term Ota. 8-3/4' 7' 2 -80 ce L YamlH(: 9386' Sunoco411408 9386' 8566 267 ax Class'G' 6-t,8" 4-1eY 12.64 t3CrBS Van,Tsap 41140 9216' 844V 9.381' 9087 416 axCamsi 6' 1 request change the surface lead slurry type to the 11 ppg LiteCrete slurry(same volume).Please contact me if you have any additional comments or questions. Thank you, Jesse Rosenbaum Drilling Engineer I BP Exploration Alaska 0:907-564-5155 C:406.533.8984 jesse.rosenbaum4bp.com 2 • PTp 2-IS' ! 21- Loepp, Victoria T (DOA) From: Loepp,Victoria T(DOA) Sent: Thursday,January 14,2016 10:10 AM To: 'Pohler,Cody J' Cc: Bettis, Patricia K(DOA) Subject: RE: KRU 1G-11AL1 (PTD#215-126)as 1G-11B Cody, Please submit an email withdrawal of 1G-11AL1(215-126) and submit a new PTD for sidetrack 1G-11B. 1G-11B will have a new PTD It and a new API U.This is the most straightforward way to accomplish this change. Thanx, Victoria Victoria Loepp Senior Petroleum Engineer State of Alaska Oil&Gas Conservation Commission 333 W.7th Ave Anchorage,AK 99501 Work: (907)793-1247 Victoria.Loepp(cilalaska.gov CONFIDENTIALITY NOTICE:This e-mail message,including any attachments,contains information from the Alaska Oil and Gas Conservation Commission (AOGCC),State of Alaska and is for the sole use of the intended recipient(s).It may contain confidential and/or privileged information.The unauthorized review,use or disclosure of such information may violate state or federal law.If you are an unintended recipient of this e-mail,please delete it,without first saving or forwarding it,and,so that the AOGCC is aware of the mistake in sending it to you,contact Victoria Loepp at(907)793-1247 or Victoria.Loeorj@alaska.aov From: Pohler, Cody J [mailto:Cody.J.Pohler@conocophillips.com] Sent: Wednesday, January 13, 2016 4:36 PM To: Loepp, Victoria T(DOA) Cc: Eller, J Gary; Venhaus, Dan E Subject: KRU 1G-11AL1 (PTD #215-126) as 1G-11B Victoria, Last August we drilled 1G-11A(215-125)and decided to delay the drilling of 1G-11AL1(215-126)to the north. Unfortunately the production from 1G-11A has been disappointing.Our objective in the proposed operations is to abandon the 1G-11A sidetrack and drill the 1G-11AL1(215-126)to the north. Since we are abandoning 1G-11A, 1G- 11AL1 lateral would be properly designated as a sidetrack and instead given the name of 1G-11B along with an API number indicating it as a sidetrack. We are contacting you to see if there is a way that the AOGCC can change the well name and API number without us having to issue a new drilling permit for a drilling plan that you have already approved. The directional plan for the northern lateral is unchanged,and there has been no meaningful change in drilling hazards or formation pressures. We intend to submit a 10-403 to abandon the 1G-11A prior to spudding 1G-11B. Please let us know if this is possible to do and if you would like more information.Attached is the August End Of Well Schematic along with the new Proposed Schematic. 1 • 1G-1 1 B Proposed CTD Schematic ,1,i; r,,, , . i . 2015 Workover Completion 3-1/2"9.3#L-80 EUE 8rd-Mod Tubing to surface 3-1/2"Camco gas lift mandrels at 2705',4127',5299',6164',6811',&7150'MD Baker 80-40 Seals&PBR at 720T MD Baker FHL packer at 7237'MD 16"62#H-40 shoe 3-1/2"Camco DS landing nipple at 7290'MD(2 812"min ID) @ 106'MD 3-1/2"overshot at 7338'MD j Remaining 1986-vintage Completion 3-1/2"tubing cutproductat 7366'MD Ohs RRH packer at 7385' 9-5/8"45.5#J-55 shoe @ 3-1/2" ion mandrels at 7421',7488',6 7758'MD 2351'MD Otis Carbide blast rings 7535-7595'MD ar ,nonobore whipstock at 7614'MD(1G-116 lateral) ft-7650'MD Baker monobore whipstock at 7660'MD(10--11A lateral) Carbide blast rings 7671'-7727'MD C-sand perfs(sgx'd) Otis WD packer at 7796'MD Cl:7540'-7590'MD Cl:7676'-7722'MD 3-1/2"Camco D landing nipple @ 7814'MD (2.75"min ID)CA-2 plug+sand+cement to isolate A-sand perfs I - 3-1/2"tubing tail at 7824'MD 1G-11A CTD Completion f2015) 10-118 KOP at 7614'MD <!iner cut at 7662'MD Halliburton Swell Packer at 7,744'MD(min ID 1.686') Liner-top packer at-7580'MD 2-3/8"Blank liner 7,759'-8,720'MD Swell packer at-XXXX'MD 2-3/8"Slotted Liner 8,720'-8,752'MD """'Open Hole(unlined)from 8,752'-8,776'MD"""" 1G-11A KOP at 7660'MD 10-116,TO=10,303'MD r ►,. - 2-3/8"liner 7580'-10,303'MD • 4. • A-sand perfs(plugged) c" 7945'-7982"MD J'1-i...� TD=10,533'MD — 2-318"liner 7662'-10,030'MD 7"26#J-55 shoe @ 8188'MD • I • • 1G-11 As-Built CTD Schematic Modified by MAW 8-28-15 I , 2015 Workover Completion • � 3-1/7 9.34 L-80 EUE 0rd-Mod Tubing to surface 3-1/2"Cameo gas lift mandrels at 2705',4127',5299',6164',6811',&7150 MOrkb III 1 Baker 80-40 Seals&PBR at 7207 MDrkb 16'62#H411 shoe 0 II Baker FHL packer at 7237'MOrkb 108'MD 312'Camco DS landing nipple at 7290'MDrkb 0.812"min ID) 31/2"overshot at 7338'MDrkb I Existing Completion '. - -I-� 3-12'tubing cut at 7366'MDrkb 3- Otis RRH packer 01 7385' 9-5/8"46.5#J55 ahoe(0 �- 2351'MD 312'Otis production mandrels at 7421',7488',&7758 MDrkb -WM b Carbide blast rings 7535'-7595'&7671'-7727'MOrkb --- , Otis Wo packer at 7798 MDrkb I 3-12'Camco D lancing nipple©7814'MDrkb (275"min ID)CA-2 plug+sand+cement to isolate Asand parts C-.and earls . 3-1/7'tubing tatl at 7824'MDrkb C4:7570'-7790'MD y _ CTD Completion 7676'-7727 MD _,� Seal Bare Deployment Sleeve 7625'MD(Sed bore ID 225") KOP 7860'MO 2.3/8"4 7ppf Hydril 511 Blank liner 7,637-7,744'MD anulus cemented pre-CTD Halliburton Swell Packer top 7,744'MD(Minimum ID in the well 1.688"ID at the base pipe 7660=312'monobore WS OHAconnection) • Liner top(Top of deployment sleeve)7,625'MD . 2-3/8"4ProH7 dril 511 Blank liner 7,756-8,720 MD Y FH Cement retainer at 7700 MD '. �` 1 Joint of 2-3/8"4.6pp6 STL Slotted Liner 8,728-8,757 MD I ^-"Open Hole from 8,757-8,776'MD""' ■ Top of Swell Packer: First Segment(1,254) 7,744'MD Slotted 10030 -� N (mininum ID 1.751'3 8,776'-10,030MD I 1=1 $ _.___� `�=a ,�- I 11G-11A,TD=1g,533'MD q,�ng Arte I• Second Segment(1,127): First Segment 11,254') IBP(Mid Elnrnarnt)=10.040 MD 7945-7982"MD I. 1 Joint slotted liner Slated liner from I 32 joints of blank finer 8,776'-10,030'MD 7,625'-8,7521AD 7 26#J55 shoe e 8188'MD • it it PTD 2/5 —/7-6. Loepp, Victoria T (DOA) From: Rosenbaum,Jesse E <Jesse.Rosenbaum@bp.com> Sent: Thursday,January 07, 2016 8:56 AM To: Loepp,Victoria T(DOA) Cc: Endacott, Mary S; Lastufka,Joseph N Subject: RE: N-31 (PTD#215-175) Diverter with New Rig Up Design Follow Up Flag: Follow up Flag Status: Flagged Victoria, I will update the PTD with this this correspondence and the new diverter schematic. Thank You, Jesse Rosenbaum From: Loepp,Victoria T(DOA) [mailto:victoria.loeppOalaska.gov] Sent:Thursday, January 07, 2016 8:30 AM To: Rosenbaum, Jesse E Cc: Endacott, Mary S; Lastufka,Joseph N Subject: RE: N-31 (PTD# 215-175) Diverter with New Rig Up Design Jesse, The attached modification to the diverter design for N-31 is approved. Please include this approval with your copy of the approved PTD. Thanx, Victoria From: Lastufka,Joseph N [mailto:Joseph.Lastufka@)bp.com] Sent:Thursday, December 31, 2015 11:54 AM To: Loepp, Victoria T(DOA) Cc: Endacott, Mary S; Rosenbaum,Jesse E Subject: FW: N-31 (PTD# 215-175) Diverter with New Rig Up Design Victoria, Attached is a new diverter that we plan to use on N-31. Please supersede the previous version if you approve, and let me know when it is appropriate to add to the approved Permit to Drill for N-31 (PTD#215-175). If you have any questions or concerns, please let me know. Thanks, Joe From: Endacott, Mary S Sent: Thursday, December 31, 2015 11:12 AM 1 • • To: Lastufka,Joseph N Subject: FW: N-31 Diverter with New Rig Up Design From: AK, D&C Rotary Operation Superintendent Sent: Wednesday, December 30, 2015 8:09 PM To: Rosenbaum, Jesse E Cc: Willingham,James M; Endacott, Mary S; AK, D&C Rig 272 Well Site Leader; Weaver, Robert(PRA); Cadenhead, Ryan; Conatser, Royce; Rig 272 Senior Manager Subject: N-31 Diverter with New Rig Up Design Hi Jesse, Attached to this email are some drawings to submit to the AOGCC for a revised diverter plan for N-31. This request for change is based on the new design which runs out the back of the BOP deck approximately 26'above ground level. I have included a pad map and detailed design drawing for N-31 along with a couple of conceptual drawings that were used for the original proposal to the AOGCC a year ago. The AOGCC approved the design in concept,as well as the engineered drawings submitted by Parker Drilling. We would now like to get approval to use this new diverter plan on well N-31. The rig team has received all needed equipment and will be ready to run this diverter if we get AOGCC approval. Please review this with Mary and Jim Willingham and with their approval, submit a revision to the AOGCC. Let me know if you need any additional information. Cheers, Greg Greg Sarber Operations Superintendent—Rotary Drilling +1 (907)659-4618(Office-slope) +1 (907)242-8000(Cell Phone) Harmony 2156 Alternate: Darrell Green 2 • • PTD -215--17-5- Loepp, J5-135-- Loepp, Victoria T (DOA) From: Lastufka,Joseph N <Joseph.Lastufka@bp.com> Sent: Thursday, December 31, 2015 11:54 AM To: Loepp,Victoria T(DOA) Cc: Endacott, Mary S; Rosenbaum,Jesse E Subject: FW: N-31 (PTD#215-175) Diverter with New Rig Up Design Attachments: Diverter Concept.Revised.pdf; N-31 Diverter.New Design.Detailed.pdf; Parker Rig Ignitions Sources.pdf; N-31 Diverter Plan.New Design.12-30-2015.pdf Follow Up Flag: Follow up Flag Status: Flagged Victoria, Attached is a new diverter that we plan to use on N-31. Please supersede the previous version if you approve, and let me know when it is appropriate to add to the approved Permit to Drill for N-31 (PTD#215-175). If you have any questions or concerns, please let me know. Thanks, Joe From: Endacott, Mary S Sent:Thursday, December 31, 2015 11:12 AM To: Lastufka, Joseph N Subject: FW: N-31 Diverter with New Rig Up Design From: AK, D&C Rotary Operation Superintendent Sent: Wednesday, December 30, 2015 8:09 PM To: Rosenbaum,Jesse E Cc: Willingham,James M; Endacott, Mary S; AK, D&C Rig 272 Well Site Leader; Weaver, Robert(PRA); Cadenhead, Ryan; Conatser, Royce; Rig 272 Senior Manager Subject: N-31 Diverter with New Rig Up Design Hi Jesse, Attached to this email are some drawings to submit to the AOGCC for a revised diverter plan for N-31. This request for change is based on the new design which runs out the back of the BOP deck approximately 26'above ground level. I have included a pad map and detailed design drawing for N-31 along with a couple of conceptual drawings that were used for the original proposal to the AOGCC a year ago. The AOGCC approved the design in concept,as well as the engineered drawings submitted by Parker Drilling. We would now like to get approval to use this new diverter plan on well N-31. The rig team has received all needed equipment and will be ready to run this diverter if we get AOGCC approval. Please review this with Mary and Jim Willingham and with their approval,submit a revision to the AOGCC. Let me know if you need any additional information. Cheers, Greg 1 ` • • 512 :II + \ —-_----c 8 Enter/Exit I III 21111 21111SII I- 20■ } Iii 1 b . 2 L_ I 19. j I o r is II 1i S 1 1 4I 15 170 -i --,� l 1� , q Enter/Exit \ - - �� .i I II — i © I I� R X \'..-\\ I it 66 I 155 I , I ` f-_I /�`, I 1 \�� I I54 L_ r- lie:— I -- — JI - ,� „ / Enter/Exit \,_ I--/ l l Io/ II I is■ I II I Ii0 1 \ II :Rub. En111, I( -if )1 N Traffic Lane---- /r® II 0 II 11 \ II .' II o .I 1l . II 1.0 i 11 a It-___-'I 1 } W -31 II C 1( I 11 �. 1 I ' C II ora fl --t��, „I II a� S II N v I 2 I II b N 1 24■ �II I 1• I II n Ir 2H•-- ILII I I II 14 II I II •' I 13UI ) 1 i, I ct.1 Ili I 12-I I 1 11y 120 I 0 I_l_11 ■I,4 I • I II ; I I „or) r I I 25•I ,' I s■1 --1- I k3 I � zz�I I1 d 118 1 I , 11 l k 14--1-- II- 500 ---,11i-1 / I 11 11 //�iI II Enter/Exit • WELL A WELL INJECTOR DATE :03/18/2015 SCALE : 1"= 400 MAP DATE : 2014 PBU - N PAD For current Well and Service information please see Atlas:http://alaska-gis.bpweb.bp.com bs14495.mxd , • ____ A ........ ____ ......... r 11 , . ,0-4.00ri 1 1 _-1 1 / 1 / I I ) / r. ___ ......._ ....Nona wara *........- ............ I 15 III II 29 II / I ! - _ ____ ............ ......... I I 4 zc? "' '-. I r- ,... .ti LL4 H ei L.Alcbi1/2.i. , ,3 ,., 751 Rafts from E f * 14.4 of Dtverter) t' • 21 I • 7 • 34 I I affic Lane —mu-491s ' , ' • 21 II Wm I I der • . DI 1 ll y ,e- gal - to Ni....,_ I . I 9 , ' r I • IS ‹ I • I /AL, f-s. t,- 1 -i . • r • 20' Exclusion 4 IA Zone Loader Parking Prohibited O ,/,7167, /9 4#0 ,0, .... .... . .... _____„ Air11.° �' • Heaters ♦ • ` Utility , Mod ul • , • \ a Drill Mo ule ,w \ O fr AA ‘ / 1 140' Rig Cedarfi 75' >: : ::T) : Of Rig Pro osed � 11, New / Boilers � ��/ H Diverter Line / Cellar, BOP Deck 81► - 50' ), / Rig Floor Are All / Classified Areasd / (No Ignition Sources) /44 I 140 ud Module � '' " '�- ..„,,,,,,w,,,,,,,,-/7J _ » I Air Heater IIII 1 V Vac Trucks SBridge Crane i Rig Drill Module Riser (Sub Base) s g Ri - Permanent Bracin BOP 20"Diverter ,Z11 and Saddle Deck // Knife Valve I Flow"T„ 5'Spacer 16"Diverter Spool Line(24') Dummy Well House 20"Riser cD o N I i Y Conductor 4 18.4' >a 4 26.0' > 4 39.0' > 4--11.0' .4 50.0' > of T 0 I7 THE STATE Alaska Oil and Gas F��r. '' � ,, Of /, T 1sKA Conservation Commission ;= 333 West Seventh Avenue GOVERNOR BILL WALKER Anchorage, Alaska 99501-3572 1,77 Main: 907.279.1433 �F ALAS1 Fax: 907.276.7542 www.aogcc.alaska.gov Mary Endacott Engineering Team Lead BP Exploration(Alaska), Inc. P.O. Box 196612 Anchorage, AK 99519-6612 Re: Prudhoe Bay Field, Prudhoe Bay Oil Pool, PBU N-31 BP Exploration(Alaska), Inc. Permit No: 215-175 (revised) Surface Location: 2099' FSL, 4711' FEL, SEC. 08, T11N, R13E, UM Bottomhole Location: 121' FSL, 1513' FWL, SEC. 09, T11N, R13E, UM Dear Mr. Endacott: Enclosed is the approved application for permit to drill the above referenced development well. 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. 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 AOGCC 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 AOGCC 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 an AOGCC order, or the terms and conditions of this permit may result in the revocation or suspension of the permit. Sincerely, al6.7 /°94A-44- Cathy P. Foerster Chair DATED this it> day of December, 2015. NOV 2 4 2015 STATE OF ALASKA 4-ASKA OIL AND GAS CONSERVATION COMMI CC101 PERMIT TO DRILL 20 AAC 25.005NAl( - REVISED-Surface Hole Location la. Type of Work: 1 b. Proposed Well Class: Development-Oil El 'Service-Winj 0 Single Zone. 0 lc.Specify if well is proposed for: Drill Q „Lateral 0 Stratigraphic Test 0 Development-Gas 0 Service-Supply 0 Multiple Zone 0 Colabed Gas 0 Gas Hydrates 0 Redrill 0 Reentry 0 Exploratory 0 Service-WAG 0 Service-Disp 0 Geothermal 0 Shale Gas 0 2. Operator Name: 5. Bond Blanket ® 'Single Well 0 11. Well Name and Number: BP Exploration(Alaska),Inc ' Bond No. 6194193 PBU N-31 ' 3 Address: 6. Proposed Depth: 12. Field/Pool(s): P.O.Box 196612 Anchorage,AK 99519-6612 MD: 13381' * ND: 9067' - PRUDHOE BAY,PRUDHOE (Governmental Section): OIL 4a. Location of Well ) 7. Property Designation(Lease Number): ADL 028282&028281 Surface: 2086'FSL,4714'FEL,Sec.08,T11N,R13E,UM 8. Land Use Permit: 13. Approximate spud date: Top of Productive Horizon: 228'FSL,2115'FEL,Sec.08,T11N,R 13E,UM 70-083 February 15,2016 Total Depth: 121'FSL,1513'FWL,Sec.09,T11N,R13E,UM 1 9. Acres in Property: 2560&2469 14.Distance to Nearest Property: 21500 4b. Location of Well(State Base Plane Coordinates-NAD 27): 10. KB Elevation above MSL: 90.95 feet 15. Distance to Nearest Well Open to Surface:x- 634412 y- 5967990 Zone - ASP 4 • GL Elevation above MSL: 43.3 feet 4 Same Pool: 450 16. Deviated wells: Kickoff Depth: 400 ` feet 17. Maximum Anticipated Pressures in psig(see 20 AAC 25.035) Maximum Hole Angle: 97 . degrees Downhole: 3378 - Surface: 2482 ' 18. Casing Program: Specifications Top-Setting Depth-Bottom Cement Quantity,c.f.or sacks Hole Casing Weight Grade Coupling Length MD TVD MD ND (including stage data) 42" 20" 129# A-53 80' Surface Surface 80' 80' 260 sx Arctic Set(Approx.) 12-1/4" 9-5/8" 40# L-80 BTC 3275' Surface Surface 3275' 3111' 1608 sx Arctic Set Lite IV,164 sx Cla 8-3/4" 7" 26# L-80 VamTopHC 9366' Surface Surface 9366' 8569' 267 sx Class'G' 6-1/8" 4-1/2" 12.6# 13Cr85 VamTop 4149' 9216' 8440' 13381' 9067' 419 sx Class'G' 19. PRESENT WELL CONDITION SUMMARY (To be completed for Redrill and Re-Entry Operations) Total Depth MD(ft): Total Depth ND(ft): Plugs(measured): Effect.Depth MD(ft): Effect.Depth ND(ft): Junk(measured): Casing Length Size Cement Volume MD I ND Conductor/Structural Surface Intermediate Production I Liner Perfnratinn Denth MD(ft)• Pe.rfnratinn Depth TVD(ft)• 20.Attachments Property Plat 0 BOP Sketch IZI Drilling Program 121Time v.Depth Plot 0 Shallow Hazard Analysis 0 Seabed Report 0 Drilling Fluid Program Q 20 AAC 25.050 requirements lI Diverter Sketch 0 21.Verbal Approval: Commission Representative: Date 22.I hereby certify that the foregoing is true and correct. Contact Rosenbaum,Jesse E Email Jesse.Rosenbaum@bp.com Printed Name Mary Endacott Title Engineering Team Lead Signature \--fii4A41/a/"/l"t 1 Phone +1 907 564 4388 Date /0 0 Commission Use Only Permit to Drill 215-175 AD See cover letter for other Number: 215-175 (Q,W5& API Number: 50-029-23560-00-00 Date: a I J requirements: Conditions of approval: If box is checked,well may not be used to explore for,test,or produce coalbed met ane,gas hydrates,or gas contained in shales: / Other: Samples req'd: Yes 0 No l Mud log req'd: Yes 0 No I3" C3oP tcsf �a 35�� s� //�I l / 1 /}r7 v�vin v p re.frl�1-r r t`�5,� to Z 5-Fl2�dme8 es Yes la No ❑ Directional svy req'd: Yes YI No ❑ Spacing exception req'd: Yes 0 No Il' Inclination-only svy req'd: Yes 0 No O APPROVED BY Approved by:�Q! F.�_ _� COMMISSIONER THE COMMISSION Date: /2-gS-!5` vn....iz/57/9 ---" (?)% ///1S1/S-- ORIGINAL Form 10-401 Revised 10/2012 This permit is valid for 24 months from the date of approval(20 AAC 25.005(g)) Submit Form and Attachments in Duplicate bp To: Alaska Oil &Gas Conservation Commission From: Jesse Rosenbaum, ODE Date: November 18, 2015 RE: N-31 Permit to Drill (#215-175) Revision#1- New Surface Hole Location Reason for revision:During the conductor install pre-planning meeting, operations discovered the SHL was to close to operate a snow plow between well houses.A new plan has been submitted to move the SHL —10ft south to accommodate plowing/snow removal operations. No other changes have been made to the permit. / J N-31 is scheduled to be drilled by Parker 272 in February of 2016.This grassroots well is a planned horizontal producer targeting Zone 2.The planned well is a three string, ultra-slimhole design using a 9-5/8"surface casing, 7"intermediate casing,and 4-1/2"production liner.The surface casing will be set in an SV3 shale.The intermediate casing will be set at the top of the Sag River formation, and the production interval will be completed with a cemented and perf'd liner. The maximum anticipated surface pressure from the Sag River with a full column of gas from TD to surface is 2482 psi (assumes 7.25 ppg EMW most likely pore pressure and a 0.1 psi/ft gas gradient). The well will be drilled by Parker 272 using their 5,000 psi four preventer BOP stack(3 rams and an annular). The BOP rams and annular will be tested to 3,500 psi. A detailed operations summary is included with the permit application. The conductor has not been installed, but an as-built will be submitted to the AOGCC once the conductor is installed. If there are any questions concerning information on N-31, please do not hesitate to use the contact information below. Jesse Rosenbaum Office: (907)564-5155 Email: Jesse.Rosenbaum@bp.com Attachments: Well Bore Schematic Directional Package(TC Plot,AC Summary) Well Head Schematic BOPE and Diverter Schematic Parker 272 Tree Schematic N-31 PTD 1 11/18/2015 • • Planned Well Summary Well N-31 Well Producer Target Ivishak Type Objective Zone 2 Current Status Grassroots Well Estimated Start Date: 2/15/2016 Time to Complete: 34 Days Surface Northing Easting Offsets TRS Location 5,967,989 634,411 2086 FSL/4714 FEL 11N 13E Sec 8 Northing Easting TVDss Offsets TRS Tgt 3 5,966,180 637,050 8,468 5051.7 FNL/2115 FEL 11N 13E Sec 8 TSGR Tgt 71 5,966,140 640,680 8,966 5158.8 FNL/3766 FEL 11N 13E Sec 9 BHL Planned KOP: 400' MD Planned TD: 13,381' MD/8,976' TVDss Rig: Parker 272 GL-RT: 46.95 RTE (ref MSL): 90.95 Directional-Baker-wp04 -22.5° in the surface section Maximum Hole Angle: -30° in the intermediate section -97° in the production section Close Approach Wells: None.All offset wells pass BP Anti-collision Scan Criteria. Survey Program: Surface to 1,100' MD = GYRO 1,100' MD to TD = MWD+IFR+MS Nearest Property Line: -21,500' Nearest Well within Pool: -450' N-31 PTD 2 11/18/2015 • s Formation Tops and Pore Pressure Estimate (SOR) Pore Pressure Formation TVDSS Fluid Type ML(ppg) Surface 1 8.4 G1 360 8.4 SV6 1635 8.4 BPRF 1900 8.63 EOCU 2170 8.43 SV5 2260 8.43 Water/HC SV4 2455 8.43 Water/HC SV3 2895 8.43 Water/HC SV2 3070 8.43 Water/HC SV1 3390 8.43 Water/HC UG4 3810 8.93 Water/HC UG4A 3855 8.93 Water/HC UG3 4100 9.3 Water/HC UG1 4550 8.93 Water/HC WS2 5110 8.68 Water/HC WS1 5240 8.68 Water/HC CM3 5435 9.08 CM2 6280 9.65 CM1 6401 9.65 THRZ 6735 9.75 BHRZ 6968 9.75 LCU 6973 9.7 TJH 7152 9.7 TJG 7169 9.7 TJF 7512 9.75 TJE 7683 9.75 TJD 7911 9.75 TJC 8180 9.75 TJB 8308 10.05 TJA 8383 10.05 TSGR 8474 7.31 Gas THSU 8508 7.28 TSAD 8589 7.21 Gas/Oil 45SB 8606 7.2 Gas/Oil 42SB 8690 7.12 Gas/Oil TCGL 8756 7.07 Gas/Oil BCGL 8818 7.02 Gas/Oil PGOC 8840 7 Gas/Oil 23SB 8880 7 Gas/Oil POWC 8920 7 Gas/Oil 22TS 8930 7 Gas/Oil MHO 8960 7 Gas/Oil Landing 8970 7 N-31 PTD 3 11/18/2015 • • Casing/Tubing Program Hole Size Liner/ Wt/Ft Grade Conn Length Top Bottom Tbg O.D. MD/TVDss MD/TVDss 42" 20"x 34" 129# A-53 - 80' Surface 80'/-11' 12-1/4" 9-5/8" 40# L-80 BTC 3,275' Surface 3,275'/3,020' 8-3/4" 7" 26# L-80 VamTop HC 9,366' Surface 9,366'/8,478' 6-1/8" 4 W 12.6# 13Cr-85 VamTop 4,165' 9,2167 8,349' 13,381'18,966' (150'lap) Tubing 4''A" 12.6# 13Cr-85 VamTop 9,211' Surface 9,211'/7,596' (-5'into liner TBR) Mud Program Surface Mud Pro.-dies:MMO 12-1/4"Hole Section Surface -3,275'MD 8.7-9.4 6-20 35-80 <15 25-60 10-11 Intermediate Mud Pro.:rhes:LSND 8-3/4"Hole Section 3,275'MD-7,346'MD 9.4-10.0 10-15 20-30 <8 NA <20 8.5-9.5 7,346'MD-9,366'MD 10.0-10.5 10-15 20-30 <8 NA <20 8.5-9.5 Production Mud Pro.erties:Water Based Pol mer Fluid FloPro 6-1/8" Hole Section 9,366'MD-TD 8.5-9.0 <8 12-20 <12 NA <4 8.5-9.5 Logging Program Drilling: Dir/GR Open Hole: None Cased Hole: None Drilling: Dir/GR/NBG/RES Open Hole: None Cased Hole: None Drilling: Dir/GR//RES/NEU Open Hole: None Cased Hole: None N-31 PTD 4 11/18/2015 • • Cement Program 5/$".40#L-80 BTC Surface Casim � Lead Open hole volume+300%excess in permafrost and 40%excess below permafrost Basis Lead TOC Surface Tail Open hole volume+40%excess+80 ft shoe track Tail TOC 500 ft MD above casing shoe Spacer -100 bbls of Viscosified Spacer weighted to-11 ppg (Mud Push II) Total Cement Lead 530 bbls,2976 cuft, 1608 sks of 11.0 ppg Arcticset Lite IV,Yield: 1.85 cuft/sk Volume Tail 34 bbls, 190 cult, 164 sks 15.8 lb/gal Class G-1.16 cuft/sk Temp BHST 62°F 40,1fa;�., ',o• #. 1. iate,Casi • ff/; y ,/ ' Tail Open hole volume+30%excess+80 ft shoe track Basis Tail TOC Target 1500 ft MD from shoe Total Cement Spacer -50 bbls of Viscosified Spacer weighted to-11.0 ppg (Mud Push II) Volume Slurry 55.3 bbls,310 cult,267 sks 15.8 lb/gal Class G-1.16 cuft/sk Temp BHST 214°F ,finer Size 4++44"42.6#13,hCrii6 Va ' e »is fiction Liner ,%1' ' ;r » s,, Basis Slurry Open hole volume+30%excess TOC Top of Liner Total Cement Spacer -50 bbls of Viscosified Spacer weighted to-11.0 ppg (Mud Push II) Volume Tail 86.6 bbls,486 cuft,419 sks 15.8 lb/gal Class G-1.16 cuft/sk Temp BHST 222°F Surface and Anti-Collision Issues Surface Close Proximity: No wells will be affected by the Parker 272 rig shadow. Sub-Surface Pressure Management: Ugnu/Cretaceous: Check pressure estimates and verify that injection rates have not changed prior to spud in the closest injection wells. The closest injection wells are GC-2E and GC-2C. Ivishak Interval: Check pressure and fluid data from NWD to confirm pressure prediction and fluid input into PPFG. Anti-Collision: None.All offset wells pass BP Anti-collision Scan Criteria. Offset well ownership information All offset wells identified within 200 ft of the proposed wellbore are operated by BP. N-31 PTD 5 11/18/2015 • • Hydrogen Sulfide Recent H2S data from the pad is as follows: Ae4e4/'44'Y #1 Closest SHL Well H2S Level N-08A 20 ppm 12/14/2014 #2 Closest SHL Well H2S Level N-04A 20 ppm 07/22/2012 #1 Closest BHL Well H2S Level N-21A 8 ppm 01/14/2015 #2 Closest BHL Well H2S Level N-12 4 ppm 01/17/2014 #3 Closest BHL Well H2S Level N-20A 18 ppm 02/18/2015 #4 Closest BHL Well H2S Level H-30 6 ppm 06/21/2015 Max.Recorded H2S on Pad/Facility N-06 55 ppm 12/07/2008 Faults ''" ter( `w#,re ZONE 4 9485 TO 9685 -8668 20' DT to NW 200'MD LOW ZONE 2 12230 TO -8965 20' DT to S 200'MD LOW 12430 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 Il 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. N-31 PTD 6 11/18/2015 • • Well Control The 12-1/4" surface hole will be drilled with a diverter (see attached diverter layout). The 8-3/4" hole and 6-1/8" hole sections will be drilled with well control equipment consisting of 5,000 psi working pressure 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 3,500 psi. BOP test frequency for N-31 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 3,035 psi at the TSGR at 8,050'TVDss(7.25 ppg EMW) Maximum surface pressure 2,230 psi at the TSGR(0.10 psi/ft gas gradient to surface) 25 bbls with 12.01 ppg frac gradient. Kick tolerance Assumes 7.25 ppg pore pressure in the SGR+0.5 ppg kick intensity and 10.4 ppg MW. Planned BOP test pressure Rams test to 3,500 psi/250 psi. Annular test to 3,500 psi/250 psi Integrity Test—12-1/4" hole LOT after drilling 20'-50'of new hole 9-5/8" Casing Test 3,500 psi surface pressure 6-1/8" Production Interval Maximum anticipated BHP 3,378 psi in the TZ2B at 8,960'TVDss(7.25 ppg EMW) Maximum surface pressure 2,482 psi(0.10 psi/ft gas gradient to surface) Infinite with >9.1 ppg frac gradient. Kick tolerance Assumes an 7.25 ppg max pore pressure in the Zone 2+0.5 ppg kick intensity and 8.6 ppg MW. Planned BOP test pressure Rams test to 3,500 psi/250 psi. Annular test to 3,500 psi/250 psi Integrity Test—6-1/8" hole FIT after drilling 20'-50'of new hole 4-1/2" Liner Top Packer 3,500 psi surface pressure Planned completion fluids 8.6 ppg seawater/2,200 ft diesel to 2,020 ft TVDss N-31 PTD 7 11/18/2015 • • Variance Requests 1. 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).This is a variance from 20 AAC 25.033. 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. • The planned 8.6-8.8 ppg fluid will provide over balance to formation fluid. Drill and Complete Operations Summary Current Condition and Well History 1. Install and survey 20"conductor and cellar box with contingency butt-weld sub. 2. Weld on landing ring. 3. Level pad and prepare location. 4. Confirm cretaceous injection pressures. 5. Validate injection/production in area per SOR. Rig Operations 1. MIRU Parker 272: a. Survey conductor with rig over it to ensure rig is centered over the hole. b. RU diverter system and test. Notify AOGCC 24 hours in advance of test. 2. Drill 12-1/4"Surface Hole Section: a. Take on 8.7 ppg DrilPlex Surface drilling mud. b. PU enough 4"drill pipe to drill the surface hole. c. Make-up 12-1/4"directional drilling assembly with MWD/GR/UBHO tool string. d. Clean out 20" conductor, spud well and directionally drill surface hole to the base of the permafrost. (Gyro until clean MWD surveys). e. At the base of the permafrost circulate hole clean and condition mud as required. f. Perform wiper trip to the top of the HWDP. g. Drill ahead per directional plan. Ensure minimum mud weight is increased to 9.0 ppg at least 200' before reaching the SV3. h. Drill remainder of surface hole to planned casing point at the base of the SV3. i. Circulate hole clean and condition mud as required. j. Perform wiper trip to base of permafrost. k. Trip back to TD,circulate hole clean and condition mud for running 9-5/8"casing. I. POOH and LD BHA. 3. Run&Cement 9-5/8"Surface Casing: a. Run 9-5/8", 40 ppf, L-80, BTC surface casing with Volant tool. Install Torque rings in each connection. b. Cement with 15.8 ppg Class G tail cement and 11 ppg Arctic Set Lite IV non-freezing cement to surface. N-31 PTD 8 11/18/2015 • • c. Pressure test casing to 3,500 psi for 30 minutes after plug bump. d. RD cementing equipment and flush and RD diverter system. e. NU FMC 11" 5M New Standard Ultra Slim wellhead system, and spacer spool, and test as required. f. NU and pressure test 13-5/8" 5M BOPE. (Configured from top to bottom: 13-5/8" annular preventer, 7" Fixed rams in the upper cavity, blind/shear rams, mud cross and 2-7/8"x 5-1/2" VBRs in the lower cavity). ➢ Test rams to 250 psi/3,500 psi with 4",5", and 7"test joints. ➢ Test annular to 250 psi 3,500 psi with 4"test joint. Drill 8-3/4"Intermediate#1 Hole Section: a. PU enough 4"drill pipe to drill the 8-3/4"intermediate hole. b. Test 9-5/8" casing to 250 psi for 5 minutes/3,500 psi for 30 minutes after cement reaches a minimum of 500 psi compressive strength. c. MU 8-3/4"drilling assembly with MWD/GR/RES/NBG tool string. d. RIH and tag float collar or TOC. Drill out all but 10 ft of shoe track and then displace to 9.4 ppg LSND mud. Drill out remainder of shoe track. e. Drill at least 20' but no more than 50'of new formation and CBU. f. Pull inside casing and perform LOT. g. Drill ahead per directional plan. Ensure mud weight is increased to a minimum of 10.4 ppg at least 200'above the CM3. h. Continue drilling to the 8-3/4" intermediate casing point which is at TSGR. CBU as needed for cutting samples to properly identify TSGR. i. At casing point, circulate hole clean and condition mud as needed. j. Perform wiper trip, bringing ghost reamer up to the previous casing shoe. k. Run back to bottom, circulate hole clean and condition mud for running 7"casing. I. POOH and LD BHA. If backreaming is necessary, trip back to TD and POH on elevators for final trip out. 4. Run and Cement 7"Intermediate Casing: a. Run 7", 26 ppf, L-80, VTHC intermediate casing. b. Stage pumps up and condition mud for cement job. Cement with 15.8 ppg Class G cement. c. Pressure test casing to 3,500 psi for 30 minutes on plug bump. d. Immediately following the casing pressure test, initiate injection down the OA by pumping 5 bbls of drilling fluid to ensure annulus remains open for freeze protection. Continue to pump 3 - 5 bbls of drilling fluid down the OA every hour until the lead cement reaches 500 psi compressive strength. e. Install casing pack-off and test per FMC representative's procedures/instructions. f. RD cementing equipment and flush stack. g. Change rams to 2-7/8"x 5-1/2"VBR in upper cavity.Test to 250 psi/3,500 psi. h. Freeze-protect the 9-5/8" x 7" annulus once the cement has reached 500 psi compressive strength. 5. Drill 6-1/8" Production Hole Section: a. PU enough 4"drill pipe to drill the 6-1/8"production hole. b. Make-up 6-1/8"drilling assembly RIH with MWD/GR/RES/NEU/DEN and cleanout to within 10 ft of the float shoe. Displace to 8.6 ppg Flo-Pro SF mud. c. Drill at least 20' but no more than 50' of new formation and CBU. N-31 PTD 9 11/18/2015 • • d. Pull inside casing and perform the FIT. e. Drill ahead to TD per directional plan and rig site geologist as bit performance allows. POOH to replace bit if required. f. At TD, circulate hole clean and condition the mud as needed. g. Perform wiper trip to the previous casing shoe. h. Run back to bottom,circulate hole clean and condition mud for running casing. i. POOH, LD excess 4"drill pipe and BHA. 6. Run and Cement 4-1/2" Production Liner: a. Run 4-1/2", 12.6 ppf, 13Cr-85, Vamtop production liner with 150 ft lap into the 7"casing shoe. b. Cement 4-1/2"liner with 15.8 ppg class"G"cement. c. Set hanger and liner top packer d. Pressure test 4-1/2"liner to 3,500 psi for 30 minutes. e. POOH, LD liner running tool. 7. Run 4-1/2"Completion: a. RU and run a 4-1/2", 12.6 ppf, 13Cr-85, VamTop completion. Space out and land the tubing with the tubing tail inserted into the liner tie back sleeve. Run in lock down screws. b. Displace well to seawater completion fluid through the IA. c. Drop ball and rod to RHC plug. d. Test tubing and IA to 3500 psi e. Shear DCK valve. f. Pump enough diesel freeze protect fluid into the IA to protect to 2,200 ft TVD on both tubing and IA. g. RU jumper line between tubing and IA to allow diesel to U-tube into tubing. 8. Nipple Down BOPE/Nipple Up Production Tree and Freeze Protect: a. Install TWC and test. Nipple down BOPE. b. N/U the tubing head adapter flange and dry hole tree. c. Test tubing head adapter flange and tree to 250 psi for 5 minutes/5,000 psi d. Install VR plugs in the annulus valves as needed and secure the well. Ensure that both IA and OA are protected by two barriers. 9. Release Rig: I.Rig down and move off location. Post-Rig Operations 1. Change out from dry hole tree 2. DSM Pull TWC. 3. MIRU slick line. Pull ball and rod/RHC plug from landing nipple below production packer. 4. Install GLVs. 5. ASRC Flow Back. 6. Install the well house, instrumentation, s-riser. N-31 PTD 10 11/18/2015 # # N-31 Drilling Critical Issues POST THIS NOTICE IN THE DOGHOUSE I. Well Control/ Reservoir Pressures A. Surface Hole: D-Pad has had instances of shallow gas broaching from offset gas-lifted wells. Those wells have been repaired. If broaching occurs follow LCM contingency plan to mitigate fluid to surface. B. Intermediate Hole: The UG3 is expected to be a 9.3 ppg EMW. The CM1, CM2 are expected to be a 10 ppg EMW. Formation pressures will be controlled with a 10.0 ppg — 10.2 ppg mud to drill to within 200' MD of the CM2. At this point, there will be a weight up to 10.2—10.4 ppg to drill the rest of the interval to TD. C. Production Hole: Expected to be at a 7.25 ppg EMW. Reservoir pressures will be controlled by using 8.6 ppg—9.0 ppg water based mud. II. Lost Circulation/Breathing A. Intermediate Hole: There are no expected fault crossings in the first intermediate hole. However, breathing has been known to occur in the Colville on other Drill Sites in Prudhoe Bay as a result of high ECD's. B. Production Hole: There are 2 expected fault crossings in the production hole. Past wells have experienced minor lost circulation. Ill. Fault Locations Formation Where TVDss Throw Direction Lost Circ Fault Encountered MD Intersect Intersect and Magnitude Uncertainty Potential Zone 4 9485'-9685' -8668 20' DT to NW 200'MD low Zone 2 12230-12430 -8965 20' DT to S 200'MD low IV. Integrity Testing Test Point Test Depth Test type EMW(Ib/gal) 9-5/8"Shoe 20'-50'from the 9-5/8"shoe LOT 12.01 ppg 7"shoe 20'-50'from the 7"shoe FIT 9.1 ppg V. Hydrogen Sulfide Recent H2S data from the pad is as follows: p ; 01-4',W104044;4/-< Well Name r #1 Closest SHL Well H2S Level N-08A 20 ppm 12/14/2014 #2 Closest SHL Well H2S Level N-04A 20 ppm 07/22/2012 #1 Closest BHL Well H2S Level N-21A 8 ppm 01/14/2015 #2 Closest BHL Well H2S Level N-12 4 ppm 01/17/2014 #3 Closest BHL Well H2S Level N-20A 18 ppm 02/18/2015 #4 Closest BHL Well H2S Level H-30 6 ppm 06/21/2015 Max.Recorded H2S on Pad/Facility N-06 55 ppm 12/07/2008 VI. Anti-Collision Issues ➢ None.All offset wells pass BP Anti-collision Scan Criteria. CONSULT THE N-PAD DATA SHEET AND THE WELL PLAN FOR ADDITIONAL INFORMATION. N-31 PTD 11 11/18/2015 • . Attachments Proposed Schematic I WEE= 61/W OW VVELEAD-RGem V N-3 1 IJIC ALARM 810713: WELL AKCIEJ•70*0 '....• PROPOSAL ow.MEV= I, k I ;41F.13E50= — A,•,,,, 11013 -19-516"TAM PORICOLIAR i ! Kcip-• • 20"INSLEATED W X 1). -2300 4- WS 31113"1'1Ave Ante=s..piiir coiciucros. ,...7,P-0 I Iii lir X KR 111- 'Odom 7V0 NOW SS ir),.. '..:-. 1= GAS LFIMAWRELS 19,rzir CW7,400,9,6061C,ID-IGGer -4---,:ii75. SI MD IVO OBI TYPE VEY IAMB $EE; OVIE i 7 -WO CCK 2 6 .641100 OW ; Illinimuni N3=3.725"in • s -6100 -741}0 MY , 4-1/2'HES XN NIPPLE -7800 LW 2 -4500 OW i. ^9100 MO 170C Edam*-I500'(nr/fans) Hi -MOW - i * . 0 7.20 I. 44 = J-14-11Z"KS X lee,O.,aitur i 11103011 r x4-tir pits ur MAI=1058' ..-0 -prr ram Pa MP,11).3325" 170P OF 4,1Fr lift 1-- tiV---'•W ".„1 -r-.9F1571-17"X 4 BKR TEBACX SLV,0=4-ifrlaG.12.41,130646 VAM7OR. -1 .4221 X:,:-• 1,10e4. J-ir x t....px.x. PluP..-Pri LIP.L.-94gr J 6132 W,#1•746r IIM -1 .I 1--14•11rVILEG,113=3._r-------1-48o4Drr NW wow) ... r m.o.26.1-50 YAM TOPIC.1 IBEZAIII Z."1.-1",,i. A.. *, 7. Lair tirt ow 36" 4 'A; all I II. rx S.MR XQ 0.;43968 Azi eV •NeN4 1 p, 1 FERFORATION SAMMY t. '"..• i REF LOG _ON XX00215 1 V.41 1 44• A MO F AT TOP PFRF •0 • 1 ...,6.4 • , Prodsze ucto=OB kw 600040411pwf Oft .0 , TBD -1 1-1/7-RA PUPJOINt SOL SIT 1 tfIERVAL ' •-•' -1111 1 . , 1 I 1 1 t 0 1 . 1 1 ..., ' S :,* e I I#J1L, 1 4- • A N ,o• S, 4 yr TFiG,12 Of,13CR-115 VAM TCP, --1._- 3 ' 4; 21 :,,,WS „, 09 52 bcf.V=atsr 014--sWeii‘•Nt. CATE NEV EN COMMENTS DUE REV FN 03666Nni f46JD4OE NW MT 0#16/15 JER PROPOSED FEVZ MIL N.31 . R40.41 N8 i , MI F48,591629- -00 ' SEC ,,TN Rk "FM.a —... , 11PetplotatIon(Masks) N-31 PTD 12 11/18/2015 • • Diverter Layout 010.0, 4431/ I jr04 MEfcx do^z r. 'i °,°PR rsmEfi4 I eill ti • �---'''" !(�'.ri+ ''1briisesvi 114 St+ni'S • 0 Traffic Lane --- - -2° 8 I N-31•• Pipelines are located directly behind the well slot. Unable to discharge the diverter to the reserve pit. • Considered running the diverter to the south, but there is high difficulty in dismantling the diverter while the mud module is in place. • 22.5°targeted bend is in place to divert flow away from the nearest manifold building. • The best choice is to run the diverter to the north.This allows the 75ft discharge space requirement per regulatory requirements. N-31 PTD 13 11/18/2015 • • Parker 272 Diverter&BOP Schematic PARKER 272 DIVERTER I HYDRIL GvERTER ANNULAR E,HIYDRIELWP 21-14'P MO PSI STUD>I FLANGE R-73 RING :,ROME rr.u•uuarwnm•u n.usnuinn•na.nu. RISER SPUCL SPACER 21-1/4'211 PSI R-73[URGE) aim SID RWG GIC( CW.TALL LENGTH iiiuur111 uu•u11b•r 11u0r. iuuSuSirau11•rrrur 22' RISER SPOOL, SPACER _ftil 21-1/4'2WPSI i6'300PSI COP R-73 FLANGED 100%FULL GORE YOING STD;Pic GAOO.E rr 11 irr TIT TFT Tr n r I H itAul,ALLY ACTUATED SIL 1E101 I©IIFE GATE VALVE 2. WITH IXASS 3364 ANSI?'6R FLN4GE unua•u■u■un•uUI Mtn lt4 VII'SPOOL 21-1/4'2W PSI 16'06ER1EA'EV LINE R-73 FUME) SID RING GALR7+ES r/ '6'CLASS 3GOf XKSI 616.5 OUFLET ALL IEvC1H 11M\I■r0ir8uauo01111ol N-31 PTD 14 11/18/2015 • i PARKER 272 BOP STACK RAY TIDE BCP; CUTCH LOOS CONYI FLANGE SHAFFER LXT?WILE HDP 13 5/8"-SM 13 5/$'-5Y STUDDED TCP 13 5/8'-SM FLANGED DTT q.... —.—. ANkL;L/A OCP- YO/12)14'UL2 OPERATOR,UPPER CARRY SIJS AND{2}14-P "�'jl35TR OPERATOR, rftforh Ilinrir SHAFFERHAFFL,CT 17 5/8'-SY13-5/8.51,1 STUDCED TCP LOSER CAVITY O 13-5/8'511 FLANGES ROT10M O I L DRIVING CROSS: _ 13 5/33-5M FL 4 ED TOOP II �� '� c:0; � LIE 13 5/$'-5M FLANGED 3OTTOY - - (7)1 1/7r-511 SIDE OUTLETS IMM•111 ..7.11111 I .. . __-__ •• __I I I HILL UNE: 4114 ..._�� ~i �7�,�p�� 2-1/18"SW FLEX HC/SE Jff - N rl. L-, *� ..,, A.I'5—.-2-1/18'SY z 3-1/6'5m D,SA, �/ �I/ S-1/H'sY FLANGED MANUAL calf VALtiE w_ -, -r- 3-1/8'.5Y FLANGED HYDRAULIC GATE VALVE t_i____._„„ CHOKE LINE: RAM T5cE BOP; 3-1/8" 511 FLANGED MANUAL GATE VALVE SHAFFER Da SINGLE 13 5/8' 5M 3-1/8" SN FLANGED HYDRAULIC GATE VALVE 13 513 5/9"/c-5M STUDDED TOP -54 FLANGED BOTTOM 3-1/8" 5W FLEX HOSE 1/(2)14'LU OPERATOR N-31 PTD 15 11/18/2015 • • Wellhead Schematic -.,4 146-9000 IR-141 S&:%%4.SKIT..,. 119313 1111131 iii i0 24 1 \' LIS 411 207.61 4.191 L',t '=,. ..„TEST 4"34'1 ill I ^��_ 3 ' „Am,. �{=� 10 LL�JJ{M§{NEMS �.' _ —j •'�=�--. II-'S{�OCI X541 1 ' 2 1/14-5$‘54' JIfi 50CC 9190 120 G'/ SCSSY EXIT '111 ' 1111 2625A 77. -- r <110. ' fir- _ r -7#.,,,,,,.g. _ ., _ - ,Dialm 114 t3 I'xA. , .-,,,, ,,-4 1461101 1}125 .14 IA .44i "M W 0 � .mg. ,-TE'ST OVOT 'WM.". 10 LOC90066 SCHEN§ -- 11-4642]x,`541 7111111 Ili � z 1114-5060 600 In ew 1 22.73 1' JI 11,1141L i :I - Ey 1781)PART 1wYELR'I 11e90111971:9 i _ 1 3-3011030 2WOITI L41DN10 now 2 P13412Pao115 I 11.. calm 11111111 7 0112@110 51.1X-14 L41011G 1171 - 4 018+1COM114 cMN)A5644LY 5 3411-114 111.1 14i4m 1111111 awaray - 6 *143417-0010 4:450.0 Kof+13! 20.174 CASING r a-1411-1114 1 P1GI1 FF 45SEIWLY 0151443 744111 NAACL7.ASI10 Ly 4 02041-414 AWG IE10 011401140,1E11ASSE.RL1 y T 14 ?013177 '9 HF 0-21 5+41.5 NwGEW 4 SIY00 C.051174 ii 7111731-00115 JELL.194111 12 7.043112 1 17,21 04419C.1144007 Pa)'Latta 4 112'30:451910 mow. 7 ® p bALACIPU& ANCHORAGE. AK 2C X 9 57s X ' 45 4 1/ R[•F1011I0G042S44 ti 00123101010646 . .470417 Mm:IM4PIm171M. 540001411111111110 11x4+41 a.o....a 0 .7.7.71:11.7.......=7:1' La f..10Th Mrl. t0%00 �� ~ la•a..r�am.aamx - SEt€RATILN 5 1101111}0.10 °7 7e+7+- epi trztir p ..,.41 111 x 4 SES x I x 4 I,/ i 01 1 ®+.... wu�t: I I-5040 CC 7LET ION .7311??, �—M. .�....re...=.1..+.�....... 4111.1:19m`ua .+w�."Y' . ,.' .o.... Com 00106111 p; N-31 PTD 16 11/18/2015 • S Tree Schematic r 25.4I e Be : ee iii fr....4 0•., 0 @ e — Ft714/1- 4 1/4-5000*OD,20 Cv = , kty tvH ... r . . 0 .., 0 k\ 92.25 —4.14^5000 We,20 V 11,64002 WOO,20 20 4Gra • % 50.12 09*40A0 o o ! 171171 _ __I•,-- 0 0) 4 III6-5(x10 WO,20 fiv 0:=0K PICIMIT MD 03W1136Wf1M, It.*ong...... =Tr==c wra.=tot• ......--- km.. 4 Ur 16-5000 TREE mo geNWON4/8/06 60.,.. 110.04 01/ 4 1/ SOW WINS 444.4.44 *144 .0,, Di4i0,3023007 N-31 PTD 17 11/18/2015 0 I S �� I u u 6 5 Io. �� - - - : Z. III o a II �. I / 4 4 \ —N • — NPAD 29 ❑ I I 7 '�_ a I� .. - I N PAD 1 -` — — — I .III THIS PROJECT 27❑ al u 26 ❑ ! 7 ❑ N I 33 ❑ r 23 ❑ � � e N-31 I 18 17 I 6 o VICINITY MAP I N.T.S. 5 I I4 XI 1 f4-1 3 ❑ LEGEND: :4IPo AS-STAKED CONDUCTOR 2 ❑ ❑ EXISTING CONDUCTOR z z 24 ❑ 72 1 xi ww m , m 1 ❑ 28 ❑ NOTES: I 1. ALASKA STATE PLANE COORDINATES ARE ZONE 4 NAD27. GEODETIC COORDINATES ARE NAD27. I l 2. HORIZONTAL AND VERTICAL CONTROL ARE BASED ON N PAD OPERATOR MONUMENTS N-1 AND N-2. I 14 0 ,r- \ 3. ELEVATIONS ARE BP EXPLORATION MEAN SEA LEVEL DATUM. 4. MEAN PAD SCALE FACTOR IS: 0.9999206 I ( 5. DATE OF SURVEY: NOVEMBER 6, 2015. I I 6. REFERENCE FIELD BOOK: NS15-57 PGS. 45-48. I 13 ❑ I I II GRAPHIC SCALE 0 125 250 500 I ( IN FEET ) 1 inch = 250 ft. LOCATED WITHIN PROTRACTED SECTION 8, T. 11 N., R. 13 E., UMIAT MERIDIAN, ALASKA WELL A.S.P. PLANT GEODETIC GEODETIC PAD SECTION NO. COORDINATES COORDINATES POSITION(DMS) POSITION(D.DD) ELEV. OFFSETS Y=5,967,989.79 N= 2572.00 70'19'13.757" 70.3204881' 2086' FSL N-31 X= 634,411.97 E= 1000.00 148'54'37.000" 148.9102778' 43.3' 4714' FEL DRAWN: KLEIN CHECKED: 4bp kali I 02 11/07/15 MOVED CONDUCTOR 10'SOUTH OK JJDATE: JACOBS 11/,07/15 ORA W NG: FR815 WON 12 WOA — N PAD sm JOB N0. 01 10/19/15 AS-STAKED INFORMATION AAH 8D5 SCALE: AS—STAKED CONDUCTOR LOCATION 00 10/19/15 ISSUED FOR INFORMATION AAH SOS WELL N-31 1 OF 1 NO. DATE REVISION BY CHK • 0 illiii iY1 �_ 111Wt�bgp II- 0., CO 41.aLe0 I0 09 Ce Q >, J a) Q i t4 Cn V . C C1 CtS o d. 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O.46; ii - N pN dOf C Q ai d d y N Com') C.) a. en o a • s .0403 North America - ALASKA - BP Prudhoe Bay PB N Pad Plan N-31 Plan N-31 N-31 wp04 plus 500' MD Anticollision Summary Report 17 November, 2015 VI BAKER HUGHES • BP • /.® 0 bp Anticollision Report BAKER HUGHES Company: North America-ALASKA-BP Local Co-ordinate Reference: Well Plan N-31 Project Prudhoe Bay TVO Reference: N-31 plan @ 90.45usft(P272 plan) Reference Site: PB N Pad MD Reference: N-31 plan @ 90.45usft(P272 plan) Site Error: 0.O0usft North Reference: True Reference Well: Plan N-31 Survey Calculation Method: Minimum Curvature Well Error: O.00usft Output errors are at 1.00 sigma Reference Wellbore Plan N-31 Database: EDM R5K-Alaska PROD-ANCP1 Reference Design: N-31 wp04 plus 500'MD Offset ND Reference: Offset Datum Reference N-31 wp04 plus 500'MD Filter type: NO GLOBAL FILTER:Using user defined selection&filtering criteria Interpolation Method: MD Interval 25.00usft Error Model: ISCWSA Depth Range: Unlimited Scan Method: Tray.Cylinder North Results Limited by: Maximum center-center distance of 200.Oousft Error Surface: Elliptical Conic Survey Tool Program Date 11/17/2015 From To (usft) (usft) Survey(Wellbore) Tool Name Description 47.15 1,100.00 N-31 wp04 plus 500'MD(Plan N-31) GYD-GC-SS Gyrodata gyro single shots 1,100.00 2,600.00 N-31 wp04 plus 500'MD(Plan N-31) MWD MWD-Standard 1,100.00 3,285.00 N-31 wp04 plus 500'MD(Plan N-31) MWD+IFR+MS-WOCA MWD+IFR+Multi Station W/O Crustal 3,285.00 4,785.00 N-31 wp04 plus 500'MD(Plan N-31) MWD MWD-Standard 3,285.00 9,377.00 N-31 wp04 plus 500'MD(Plan N-31) MWD+IFR+MS-WOCA MWD+IFR+Multi Station W/O Crustal 9,377.00 10,580.00 N-31 wp04 plus 500'MD(Plan N-31) MWD MWD-Standard 9,377.00 10,580.00 N-31 wp04 plus 500'MD(Plan N-31) MWD+IFR+MS-WOCA MWD+IFR+Multi Station W/O Crustal 10,580.00 11,800.00 N-31 wp04 plus 500'MD(Plan N-31) MWD MWD-Standard 10,580.00 13,881.47 N-31 wp04 plus 500'MD(Plan N-31) MWD+IFR+MS-WOCA MWD+IFR+Multi Station W/O Crustal 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) GC-2 GC-2E-GC-2E-GC-2E Out of range PB N Pad N-05-N-05-N-05 854.46 825.00 169.32 16.85 152.47 Pass-Major Risk N-06-N-06-N-06 678.40 650.00 64.40 12.02 52.38 Pass-Major Risk N-07-N-07-N-07 626.73 600.00 134.27 15.30 118.97 Pass-Major Risk N-07-N-07A-N-07A 616.03 600.00 134.11 15.11 119.00 Pass-Major Risk N-08-N-08-N-08 553.46 525.00 34.39 9.72 24.66 Pass-Major Risk N-08-N-08A-N-08A 553.46 525.00 34.39 9.72 24.66 Pass-Major Risk N-12-N-12-N-12 8,042.11 7,900.00 141.74 118.75 55.37 Pass-Major Risk N-21-N-21-N-21 Out of range N-21-N-21A-N-21A Out of range N-23-N-23-N-23 690.15 675.00 68.55 15.63 52.92 Pass-Major Risk N-23-N-23A-N-23A 690.15 675.00 68.55 15.63 52.92 Pass-Major Risk N-26-N-26-N-26 663.40 650.00 165.60 10.58 155.06 Pass-Major Risk N-27-N-27-N-27 566.71 550.00 197.83 9.21 188.66 Pass-Major Risk N-28-N-28-N-28 3,867.65 3,725.00 93.27 67.75 44.03 Pass-Major Risk N-30-N-30-N-30 598.65 600.00 99.65 10.32 89.33 Pass-Major Risk Plan N-31-Plan N-31-N-31 wp04 9,350.00 9,350.00 0.00 129.73 -102.77 FAIL-Major Risk PB Q Pad Q-01-Q-01-Q-01 Out of range Q-01-Q-01 A-Q-01 A Out of range 11/17/2015 5:26:26PM Page 2 of 3 COMPASS 5000.1 Build 61 v„..„. BP Flit` ,- by Anticollision Report BAKER HUGHES Company: North America-ALASKA-BP Local Co-ordinate Reference: Well Plan N-31 Project: Prudhoe Bay TVD Reference: N-31 plan @ 90.45usft(P272 plan) Reference Site: PB N Pad MD Reference: N-31 plan @ 90.45usft(P272 plan) Site Error: 0.00usft North Reference: True Reference Well: Plan N-31 Survey Calculation Method: Minimum Curvature Well Error: 0.00usft Output errors are at 1.00 sigma Reference Wellbore Plan N-31 Database: EDM R5K-Alaska PROD-ANCP1 Reference Design: N-31 wp04 plus 500'MD Offset ND Reference: Offset Datum Reference Depths are relative to N-31 plan @ 90.45usft(P272 plan) Coordinates are relative to:Plan N-31 Offset Depths are relative to Offset Datum Coordinate System is US State Plane 1927(Exact solution),Alaska Zone 04 Central Meridian is 150°0'0.000 W° Grid Convergence at Surface is:1.03° Ladder Plot 1 200 - _ I I 1 __ji 7 , __ ___,...-I , - I I I 1 11 I I "Y)150J s \jjI_J _I M i 1 o i. ec I t I Lo m- - I 1 1 C J J J - J ,i I 1 1 (6I I I 1 IZ 4 I I I 1 u)100 •" 1 1 i., I 1 2 I I 4. I I C 1111 I 1 1 1 IU f I 0 --{/MII J J _ J J _J J O _ If I I I 1 I N 1 1 I I IU▪ 50 P; i 1 0 1 1 I 1 1 1 I 1 1 - °/ I 1 I 1 I J J J J J _I 1 I 1 I 1 I I I I 1 I ! 1 f I 1 1 0 _f i ii X H H if iHl H H H Ifo if if H Hi'11'1 7r-r14ENIE i T-R L_, ' 0 2500 5000 7500 10000 12500 15000 Measured Depth(2500 usft/in) LEGEND -e- GC-2E,GC-2E,GC-2EV2 -• N-12,N-12,N-12V1 N-28,N-28,N-28 VO N-05,N-05,N-05 V1 -l- N-21,N-21,N-21 V2 N-30,N-30,N-30 VO - N-06,N-06,N-06 V2 -*- N-21,N-21 A,N-21 A V2 $- Plan N-31,Plan N-31,N-31 wp04 VO -$- N-07,N-07,N-07 V1 - - N-23,N-23,N-23 V1 Q-01,Q-01,Q-01 V1 4- N-07,N-07A,N-07A V8 N-23,N-23A,N-23A V2 Q-01,Q-01A,Q-01AV1 N-08,N-08,N-08 V10 N-26,N-26.N-26 V1 -9- N-31 wp04 plus 500'MD N-08,N-08A,N-08A V13 -0- N-27,N-27,N-27 V14 11/17/2015 5:26:26PM Page 3 of 3 COMPASS 5000.1 Build 61 AI • � UI Northing(400 usft/in) M2 S o o 8 S 8 p 8p 8 8 S S 8 S S 8 c od 8 8 8 �8 8 8 SI N 2N - - 0...-... g O 9 8 ES m Er.- r 8 8 8 8 8 _V 4 m S m S 5 5 m 9 8 8 8 8 8 8 8 8 8 8 8 8 8 8 LL) LL) LL) 1f) LL7 LL) It) LL) 10 h 1L) U) LL) IL) 10 LL) 41 U) µD LCD LL) l() 643600 643600 6432001 ■� '��0 643200 642800 OL. ■ ■ ■ iii 642800 642400' ■ ■■ ■�'� 642400642000642000ALM ; 641600ill iUiiUIIiNiUNpIIL' 641600 mi al o -a o a c 641200'■ 1.1., ILIIIIIjBf mri 641200 0w § z640800 111 ■ ■ 640800 z $� 8 WV! 640400 LL a MEIM - �� 46 640400 X00 ■.1.�d = Zoe _ Iii-0 7,8 640000 111111111 ■ ■ 1 ■ 'VA z ■ 640000 g 639600 gi 639200• 8 638800 uuiiuu:, mil 638800 • a 638400 ®� • 1 638400 O 0' ■ •,, •, I ,,, ,®1 III=MIME o aZi a ^6380001 0111111111111 ',, I'I ®®,I� ■ j t 638000 03- 3 ti- 0 637600 III .■■ 1111151111111.111111 0006 r` '` 637600 m y 637200 r 637200 12 m O a 4 636800 636800 eh 32'm a 636400 V O" ` Pri�„ , — _000 �' 636400 ox C ng. a• is 636000 ®� ■■ ',��.IL . I('. W .2 g W 635600 ,�` J,RA ,Ri O� �� - min imi635600 ■ ,` ` MM ' ��EI A - Mil 635200 '��” 635200 � 1111111111 634800 ■ mout .. 634800 H 1111111 altaliplitrooted;,,num 634400 ■ ■■■■ 1,, �iAt. a mow- ® ■ 634400 z 634000 111111111111 O �� Eli- 634000 r Ill 633600 ... 633600 7I m �� cc.:, ISM _1 _ - 633200 a 633200 2 m A o 632800 �■■� 632800 aaaaQg '� � c 4 3 n a 632400 IIIIMjIiiII::1j sin Lir630800 +: O - 630800 630400 __ O0' Q_■ ■■ —11 ■■■ 630400 (/�) 630000 pO _.8�_.- mem ppm ... -____-_.- '� 88'630000 iW O (9O N 8 8 O 9 N 8D 8 8 2 N 8 8 8 8 8 GO -[/iyil rn m m ao CD CD rn o co In U) v N. � r� n N- o^ or � � � m m co co co m co co co � S N 2 .2 rn') S S' N LLP 2 S' $' N N 2 urn') L urn') LLP] 2 0 (u!/33sn 000 aultil ioN II • TRANSMITTAL LETTER CHECKLIST WELL NAME: (/L ' l / CR6U CSCcJ/i PTD: DCISS� 1 Development Service _Exploratory Stratigraphic Test _Non-Conventional ?Ncitt06,. FIELD: �rJ%�. POOL: 7 ?Neikbe- au? / 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- - - - (If last two digits Production should continue to be reported as a function 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 (name on permit). The permit is approved subject to full compliance with 20 AAC 25.055. Approval to produce/inject is contingent upon issuance of a conservation Spacing Exception 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 AOGCC must be in no greater Dry Ditch Sample than 30' sample intervals from below the permafrost or from 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 Non-Conventional (name of well) until after (Company Name) has designed and Well implemented a water well testing program to provide baseline data on water quality and quantity. (Company Name) must contact the AOGCC 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 2/2015 41 0 El , , , , N a) a , Cl, N , a) 0 , , `o m a � , TII E Q ; a, IIo.' U,' , .3 � Y CO Q 0, a ai , a 4 0. E 0 c' ox a ° , , c �, rn r) 0 E 0 3, O. c oas 0.. o, >. p. a, a as m, o3 o, d - , o m, -ci E, o; ° aa>, 3, , m a m o (°, CS p o ° E. 0_ W in U) c a), c �, a' 112 0) a ay 0 0 Zi 00 J, y0 O 01 Mm, N: asO 0 , a , d C w°-) , , a> (a° c o� Ui a. . N aai ..,,,CO, 3 t 43 CO m < Lu @ CNi' , EE a> a, 2 M m m o oc W C. O. 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Q � w C9 a ti of Tk" • • ��j� sA THE STATE Alaska Oil and Gas of Conservation Commission ALAsKA = = 333 West Seventh Avenue GOVERNOR BILL WALKER Anchorage, Alaska 99501-3572 Q, Main: 907.279.1433 ALAele Fax: 907.276.7542 www.aogcc.alaska.gov Mary Endacott Engineering Team Lead BP Exploration(Alaska), Inc. P.O. Box 196612 Anchorage, AK 99519-6612 Re: Prudhoe Bay Field, Prudhoe Bay Oil Pool, PBU N-31 BP Exploration(Alaska), Inc. Permit No: 215-175 Surface Location: 2099' FSL, 4711' FEL, SEC. 08, T11N, R13E, UM Bottomhole Location: 121' FSL, 1513' FWL, SEC. 09, T11N, R13E, UM Dear Mr. Endacott: 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 AOGCC 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 AOGCC 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 an AOGCC order, or the terms and conditions of this permit may result in the revocation or suspension of the permit. Sincerely, Cathy P Foerster Chair Ut DATED this day of October, 2015. STATE OF ALASKA RECEIVED SKA OIL AND GAS CONSERVATION COMMIS PERMIT TO DRILL SEP 3 0 2015 20 AAC 25.005 1 a. Type of Work: 1 b. Proposed Well Class: Development-Oil I • Service-Winj 0 Single Zone • 0 lc.Sp f p... ed for: Drill . 0 Lateral 0 Stratigraphic Test 0 Development-Gas 0 Service-Supply 0 Multiple Zone 0 Colabed Gas ❑ Gas Hydrates 0 Redrill 0 Reentry 0 Exploratory 0 Service-WAG 0 Service-Disp 0 Geothermal 0 Shale Gas 0 2. Operator Name: 5. Bond Blanket 0-Single Well 0 11. Well Name and Number: BP Exploration(Alaska),Inc Bond No. 6194193 • PBU N-31 _ 3 Address: 6. Proposed Depth: 12. Field/Pool(s): P.O.Box 196612 Anchorage,AK 99519-6612 MD: 13365'. TVD: 9057' • PRUDHOE BAY,PRUDHOE • 4a. Location of Well(Governmental Section): OIL ) 7. Property Designation(Lease Number): ADL 028282&028281 Surface: 2099'FSL,4711'FEL,Sec.08,T11N,R13E,UM '• 8. Land Use Permit: 13. Approximate spud date: Top of Productive Horizon: 228'FSL,2115'FEL,Sec.08,T11N,R 13E,UM February 15,2016 Total Depth: 121'FSL,1513'FWL,Sec.09,T11N,R13E,UM 9. Acres in Property: 2560&2469 14.Distance to Nearest Property: 21500 • 4b. Location of Well(State Base Plane Coordinates-NAD 27): 10. KB Elevation above MSL: 90.95'feet 15. Distance to Nearest Well Open to Sam Pool: Surface:x- 634414' y- 5968003 ` Zone - ASP 4 GL Elevation above MSL: 44•feet 450 / 16. Deviated wells: Kickoff Depth: 400 . feet 17. Maximum Anticipated Pressures in psig(see 20 AAC 25.035) Maximum Hole Angle: 97 degrees Downhole: 3378 • Surface: 2482' 18. Casing Program: Specifications Top-Setting Depth-Bottom Cement Quantity,c.f.or sacks Hole Casing Weight Grade Coupling _Length, MD TVD MD TVD (including stage data) 42" 20" 129# A-53 80' Surface Surface 80' • 80' 260 sx Arctic Set(ADDrox.) 12-1/4" 9-5/8" 40# L-80 BTC 3275' Surface Surface 3275' • 3111' 1608 sx Arctic Set Lite IV,164 sx Cla 8-3/4" 7" 26# L-80 VamTopHC 9366' Surface Surface 9366' • 8569' 267 sx Class'G' 6-1/8" 4-1/2" 12.6# 13Cr85 VamTop 4149' 9216' 8440' 13365' • 9057' 419 sx Class'G' 19. PRESENT WELL CONDITION SUMMARY (To be completed for Redrill and Re-Entry Operations) Total Depth MD(ft): Total Depth ND(ft): Plugs(measured): Effect.Depth MD(ft): Effect.Depth TVD(ft): Junk(measured): Casing Length Size Cement Volume MD ND Conductor/Structural Surface Intermediate Production Liner Perforation Depth MD(ft)• I Perforation Depth ND(ft)* 20.Attachments Property Plat 0 BOP Sketch 0 Drilling Program 0 Time v.Depth Plot ❑ Shallow Hazard Analysis 0 Diverter Sketch ❑ Seabed Report 0 Drilling Fluid Program 0 20 AAC 25.050 requirements 0 21.Verbal Approval: Commission Representative: Date 22.I hereby certify that the foregoing is true and correct. Contact Rosenbaum,Jesse E Email Jesse.Rosenbaum@bp.com Printed Name nMary Endacott Title Engineering Team Lead 61/2q//5" Signature \��/( //. Phone +19075644388 Date i Commission Use Only Permit to Drill �/ /,� P mit Approval See cover letter for other Number: Zl5 ' l ! API Number: 50-� � 7rFv- j- /0(9 ��requirements: Conditions of approval: If box is checked,well may not be used to explore for,test,or produce coalbed metttune,gas hydrates,or gas contained in shales: i Other: 6 p p ri-.5 j--- f a 3 5—,O0 p S fcyj Samples req'd: Yes 0/ No Mud log req'd: Yes 0 No 0/ f k-j.h v/a i—p rC vevj te-r 1--e--5-/-1-z, 0514nt s as Yes IJ No ❑ Directional svy req'd: Yes Cd/ No �❑/ Spacing exception req'd: Yes 0 No g Inclination-only svy req'd: Yes 0 No I;d APPROVED BY Approved by: COMMISSIONER THE COMMISSION Date:/O_ 3 4S' k.7-1 / '/2o/ic ORIGINAL ,.o( %c--- Form 10-401 Revised 10/2012 This permit is valid for 24 months from the date of approval(20 AAC 25.005(g)) Submit Form and in Duplicate .,,,- bp • • To: Alaska Oil&Gas Conservation Commission From: Jesse Rosenbaum, ODE Date: September 28,2015 RE: N-31 Permit to Drill N-31 is scheduled to be drilled by Parker 272 in February of 2016.This grassroots well is a planned horizontal producer targeting Zone 2.The planned well is a three string, ultra-slimhole design using a 9-5/8" surface casing, 7" intermediate casing,and 4-1/2"production liner.The surface casing will be set in an SV3 shale.The intermediate casing will be set at the top of the Sag River formation,and the production interval will be completed with a cemented and perfd liner. The maximum anticipated surface pressure from the Sag River with a full column of gas from TD to surface is 2482 psi (assumes 7.25 ppg EMW most likely pore pressure and a 0.1 psi/ft gas gradient). The well will be drilled by Parker 272 using their 5,000 psi four preventer BOP stack(3 rams and an annular). The BOP rams and annular will be tested to 3,500 psi. A detailed operations summary is included with the permit application. The conductor has not been installed, but an as-built will be submitted to the AOGCC once the conductor is installed. If there are any questions concerning information on N-31, please do not hesitate to use the contact information below. Jesse Rosenbaum Office: (907)564-5155 Email:Jesse.Rosenbaum@bp.com Attachments: Well Bore Schematic Directional Package(TC Plot,AC Summary) Well Head Schematic BOPE and Diverter Schematic Parker 272 Tree Schematic N-31 PTD 1 9/28/2015 • s Planned Well Summary Well N-31 Well Producer Target Ivishak Type Objective Zone 2 • Current Status Grassroots Well Estimated Start Date: 2/15/2016 , Time to Complete: 34 Days Surface Northing Easting Offsets TRS Location 5,968,003 . 634,414. 2099 FSL/4711 FEL • 11N 13E Sec 8 - Northing Easting TVDss Offsets TRS Tgt 3 5,966,180 637,050 8,468 5051.7 FNL/2115 FEL 11N 13E Sec 8 TSGR Tgt 11 5,966,140 640,680 8,966 5158.8 FNL/3766 FEL 11N 13E Sec 9 BHL Planned KOP: 400' MD Planned TD: 13,365' MD/8,966' TVDss Rig: Parker 272 • GL-RT: 46.95 RTE (ref MSL): 90.95 Directional-Schlumberger-wp03 -22.5° in the surface section Maximum Hole Angle: -30° in the intermediate section -97° in the production section Close Approach Wells: None.All offset wells pass BP Anti-collision Scan Criteria. Survey Program: Surface to 1,100' MD = GYRO 1,100' MD to TD = MWD+IFR+MS Nearest Property Line: -21,500' . Nearest Well within Pool: -450' N-31 PTD 2 9/29/2015 • • • Formation Tops and Pore Pressure Estimate (SOR) 0:4-0104 Pore Pressure Ate‘-‘..el ,,4/ < /K� �y Formation TVDSS Fluid Type .C.. ML(ppg) 6Pr ) Surface 1 8.4 �..7--p y G1 360 8.4 SV6 1635 8.4 BPRF 1900 8.63 EOCU 2170 8.43 SV5 2260 8.43 Water/HC SV4 2455 8.43 Water/HC SV3 2895 8.43 Water/HC SV2 3070 8.43 Water/HC ?, T -/0 1 SV1 3390 8.43 Water/HC UG4 3810 8.93 Water/HC UG4A 3855 8.93 Water/HC UG3 4100 9.3 Water/HC UG1 4550 8.93 Water/HC WS2 5110 8.68 Water/HC WS1 5240 8.68 Water/HC CM3 5435 9.08 CM2 6280 9.65 CM1 6401 9.65 m,-W_ -,..,... THRZ 6735 9.75 /Ct -/0. BHRZ 6968 9.75 LCU 6973 9.7 TJH 7152 9.7 TJG 7169 9.7 TJF 7512 9.75 TJE 7683 9.75 TJD 7911 9.75 TJC 8180 9.75 TJB 8308 10.05 TJA 8383 10.05 TSGR 8474 7.31 Gas THSU 8508 7.28 gi C-,,.._ 9 Cs TSAD 8589 7.21 Gas/Oil 4556 8606 7.2 Gas/Oil 42SB 8690 7.12 Gas/Oil TCGL 8756 7.07 Gas/Oil BCGL 8818 7.02 Gas/Oil PGOC 8840 7 Gas/Oil 23SB 8880 7 Gas/Oil POWC 8920 7 Gas/Oil 22TS 8930 7 Gas/Oil MHO 8960 7 Gas/Oil Landing 8970 7 F N-31 PTD 3 9/28/2015 i • Casing/Tubing Program Hole Size Liner I Wt/Ft Grade Conn Length Top Bottom Tbg O.D. MD/TVDss MD/TVDss 42" 20"x 34" 129# A-53 - 80' Surface 80'!-11' 12-1/4" 9-5/8" 40# L-80 BTC 3,275' Surface 3,275'/3,020' 8-3/4" 7" 26# L-80 VamTop HC 9,366' Surface 9,366'/8,478' 6-1/8" 4'W 12.6# 13Cr-85 VamTop 4,149' 9,216'/8,349' 13,365'/8,966' (150'lap) Tubing 4'W 12.6# 13Cr-85 VamTop 9,211' Surface 9,211'/7,596' (-5' into liner TBR) Mud Program Surface Mud Properties:MMO I 12-1/4" Hole Section r' ,JJ'''"4rri,"`/"��J'i,,��`'Y'f1f4!/!A: 'f r% " //;, Depth interval De a y i: �'/4 YP p (p•° ;,.., (113/100tr) Surface -3,275MD 8.7-9.4 , 6-20 35-80 L <15 25-60 10-11 Intermediate Mud Properties: LSND 8-3/4" Hole Section Depth Interval YP , •:c to •/100ftz ,%,`�„ 3,275' MD-7,346' MD 9.4-10.0 . 10-15 20-30 <8 NA <20 8.5-9.5 7,346' MD-9,366'MD 10.0-10.5• 10-15 20-30 <8 j NA <20 8.5-9.5 Production Mud Properties:Water Based Polymer Fluid(FloPro) 6-1/8" Hole Section -70 .Depth Interval (pPg)y PV(cp) (1b/100m API FL ' , 9,366' MD-TD 8.5-9.0 - <8 12-20 <12 NA <4 8.5-9.5 Logging Program d14"Surface Sample Catchers-not required for surface hole Drilling: Dir/GR Open Hole: None Cased Hole: None air: ..: :-a n., V• •; ;' ... ,// Drilling: Dir/GR/NBG/RES Open Hole: None Cased Hole: None 6:fit trod Sa _- atch ciiiiired by Geology Drilling: Dir/CR//RES/NEU Open Hole: None _ Cased Hole: None N-31 PTD 4 9/28/2015 S • Cement Program Lead Open hole volume+300%excess in permafrost and 40%excess below permafrost Basis Lead TOC Surface Tail Open hole volume+40%excess+80 ft shoe track Tail TOC 500 ft MD above casing shoe Spacer -100 bbls of Viscosified Spacer weighted to-11 ppg (Mud Push II) Total Cement Lead 530 bbls,2976 cuft, 1608 sks of 11.0 ppg Arcticset Lite IV,Yield: 1.85 cuft/sk Volume Tail 34 bbls, 190 cuft, 164 sks 15.8 lb/gal Class G-1.16 cuft/sk Temp BHST 62° F Tail Open hole volume+30%excess+80 ft shoe track Basis Tail TOC Target 1500 ft MD from shoe Total Cement Spacer -50 bbls of Viscosified Spacer weighted to-11.0 ppg (Mud Push II) Volume Slurry 55.3 bbls, 310 cuft,267 sks 15.8 lb/gal Class G-1.16 cuft/sk Temp BHST 214° F Ti7,,ZE:Lf rm Basis Slurry Open hole volume+30%excess TOC Top of Liner Total Cement Spacer -50 bbls of Viscosified Spacer weighted to-11.0 ppg (Mud Push II) Volume Tail 86.6 bbls,486 cuft,419 sks 15.8 lb/gal Class G-1.16 cuft/sk Temp BHST 222°F Surface and Anti-Collision Issues Surface Close Proximity: No wells will be affected by the Parker 272 rig shadow. Sub-Surface Pressure Management: Ugnu/Cretaceous: Check pressure estimates and verify that injection rates have not changed prior to spud in the closest injection wells. The closest injection wells are GC-2E and GC-2C. Ivishak Interval: Check pressure and fluid data from NWD to confirm pressure prediction and fluid input into PPFG. Anti-Collision: None.All offset wells pass BP Anti-collision Scan Criteria. Offset well ownership information All offset wells identified within 200 ft of the proposed wellbore are operated by BP. _ N-31 PTD 5 9/28/2015 • • Hydrogen Sulfide Recent H2S data from the pad is as follows: #1 Closest SHL Well H2S Level N-08A 20 ppm 12/14/2014 #2 Closest SHL Well H2S Level N-04A 20 ppm 07/22/2012 #1 Closest BHL Well H2S Level N-21A 8 ppm 01/14/2015 #2 Closest BHL Well H2S Level N-12 4 ppm 01/17/2014 #3 Closest BHL Well H2S Level N-20A 18 ppm 02/18/2015 #4 Closest BHL Well H2S Level H-30 6 ppm 06/21/2015 Max.Recorded H2S on Pad/Facility N-06 55 ppm 12/07/2008 Faults ZONE 4 9485 TO 9685 -8668 20' DT to NW . 200'MD LOW • ZONE 2 12230 TO -8965 20' DT to S - 200'MD LOW 12430 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. N-31 PTD 6 9/28/2015 • Well Control The 12-1/4" surface hole will be drilled with a diverter(see attached diverter layout). The 8-3/4" hole and 6-1/8" hole sections will be drilled with well control equipment consisting of 5,000 psi working pressure 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 3,500 psi. BOP test frequency for N-31 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 3,035 psi at the TSGR at 8,050'TVDss(7.25 ppg EMW) Maximum surface pressure 2,230 psi at the TSGR(0.10 psi/ft gas gradient to surface) 25 bbls with 12.01 ppg frac gradient. Kick tolerance Assumes 7.25 ppg pore pressure in the SGR+0.5 ppg kick intensity and 10.4 ppg MW. Planned BOP test pressure Rams test to 3,500 psi/250 psi. Annular test to 3,500 psi/250 psi Integrity Test—12-1/4"hole LOT after drilling 20'-50' of new hole 9-5/8"Casing Test 3,500 psi surface pressure 6-1/8" Production Interval Maximum anticipated BHP 3,378 psi in the TZ2B at 8,960'TVDss(7.25 ppg EMW) . Maximum surface pressure 2,482 psi(0.10 psi/ft gas gradient to surface) Infinite with >9.1 ppg frac gradient. Kick tolerance Assumes an 7.25 ppg max pore pressure in the Zone 2 +0.5 ppg kick intensity and 8.6 ppg MW. Planned BOP test pressure Rams test to 3,500 psi/250 psi. Annular test to 3,500 psi/250 psi Integrity Test—6-1/8" hole FIT after drilling 20'-50' of new hole 4-1/2" Liner Top Packer 3,500 psi surface pressure Planned completion fluids 8.6 ppg seawater/2,200 ft diesel to 2,020 ft TVDss N-31 PTD 7 9/28/2015 S Variance Requests 1. 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).This is a variance from 20 AAC 25.033. -� 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. • The planned 8.6-8.8 ppg fluid will provide over balance to formation fluid. Drill and Complete Operations Summary Current Condition and Well History 1. Install and survey 20"conductor and cellar box with contingency butt-weld sub. 2. Weld on landing ring. 3. Level pad and prepare location. 4. Confirm cretaceous injection pressures. 5. Validate injection/production in area per SOR. Rig Operations 1. MIRU Parker 272: a. Survey conductor with rig over it to ensure rig is centered over the hole. b. RU diverter system and test. Notify AOGCC 24 hours in advance of test. 2. Drill 12-1/4"Surface Hole Section: a. Take on 8.7 ppg DrilPlex Surface drilling mud. b. PU enough 4"drill pipe to drill the surface hole. c. Make-up 12-1/4"directional drilling assembly with MWD/GR/UBHO tool string. d. Clean out 20" conductor, spud well and directionally drill surface hole to the base of the permafrost.(Gyro until clean MWD surveys). e. At the base of the permafrost circulate hole clean and condition mud as required. f. Perform wiper trip to the top of the HW DP. g. Drill ahead per directional plan. Ensure minimum mud weight is increased to 9.0 ppg at least 200' before reaching the SV3. h. Drill remainder of surface hole to planned casing point at the base of the SV3. i. Circulate hole clean and condition mud as required. j. Perform wiper trip to base of permafrost. k. Trip back to TD,circulate hole clean and condition mud for running 9-5/8"casing. I. POOH and LD BHA. 3. Run &Cement 9-5/8"Surface Casing: a. Run 9-5/8", 40 ppf, L-80, BTC surface casing with Volant tool. Install Torque rings in each connection. b. Cement with 15.8 ppg Class G tail cement and 11 ppg Arctic Set Lite IV non-freezing cement to surface. N-31 PTD 8 9/28/2015 • • c. Pressure test casing to 3,500 psi for 30 minutes after plug bump. d. RD cementing equipment and flush and RD diverter system. e. NU FMC 11" 5M New Standard Ultra Slim wellhead system, and spacer spool, and test as required. f. NU and pressure test 13-5/8" 5M BOPE. (Configured from top to bottom: 13-5/8" annular preventer, 7" Fixed rams in the upper cavity, blind/shear rams, mud cross and 2-7/8" x 5-1/2" VBRs in the lower cavity). ➢ Test rams to 250 psi/3,500 psi with 4", 5", and 7"test joints. ➢ Test annular to 250 psi 3,500 psi with 4"test joint. Drill 8-3/4"Intermediate#1 Hole Section: a. PU enough 4"drill pipe to drill the 8-3/4" intermediate hole. b. Test 9-5/8" casing to 250 psi for 5 minutes/3,500 psi for 30 minutes after cement reaches a minimum of 500 psi compressive strength. c. MU 8-3/4"drilling assembly with MWD/GR/RES/NBG tool string. d. RIH and tag float collar or TOC. Drill out all but 10 ft of shoe track and then displace to 9.4 ppg LSND mud. Drill out remainder of shoe track. e. Drill at least 20' but no more than 50' of new formation and CBU. f. Pull inside casing and perform LOT. g. Drill ahead per directional plan. Ensure mud weight is increased to a minimum of 10.4 ppg at least 200' above the CM3. h. Continue drilling to the 8-3/4" intermediate casing point which is at TSGR. CBU as needed for cutting samples to properly identify TSGR. i. At casing point,circulate hole clean and condition mud as needed. j. Perform wiper trip, bringing ghost reamer up to the previous casing shoe. k. Run back to bottom, circulate hole clean and condition mud for running 7"casing. I. POOH and LD BHA. If backreaming is necessary, trip back to TD and POH on elevators for final trip out. 4. Run and Cement 7" Intermediate Casing: a. Run 7",26 ppf, L-80, VTHC intermediate casing. b. Stage pumps up and condition mud for cement job. Cement with 15.8 ppg Class G cement. c. Pressure test casing to 3,500 psi for 30 minutes on plug bump. d. Immediately following the casing pressure test, initiate injection down the OA by pumping 5 bbls of drilling fluid to ensure annulus remains open for freeze protection. Continue to pump 3 - 5 bbls of drilling fluid down the OA every hour until the lead cement reaches 500 psi compressive strength. e. Install casing pack-off and test per FMC representative's procedures/instructions. f. RD cementing equipment and flush stack. g. Change rams to 2-7/8"x 5-1/2"VBR in upper cavity.Test to 250 psi/3,500 psi. h. Freeze-protect the 9-5/8" x 7" annulus once the cement has reached 500 psi compressive strength. 5. Drill 6-1/8" Production Hole Section: a. PU enough 4"drill pipe to drill the 6-1/8" production hole. b. Make-up 6-1/8"drilling assembly RIH with MWD/GR/RES/NEU/DEN and cleanout to within 10 ft of the float shoe. Displace to 8.6 ppg Flo-Pro SF mud. ----- c. Drill at least 20' but no more than 50' of new formation and CBU. N-31 PTD 9 9/28/2015 • • d. Pull inside casing and perform the FIT. e. Drill ahead to TD per directional plan and rig site geologist as bit performance allows. POOH to replace bit if required. f. At TD, circulate hole clean and condition the mud as needed. g. Perform wiper trip to the previous casing shoe. h. Run back to bottom,circulate hole clean and condition mud for running casing. i. POOH, LD excess 4" drill pipe and BHA. 6. Run and Cement 4-1/2" Production Liner: a. Run 4-1/2", 12.6 ppf, 13Cr-85,Vamtop production liner with 150 ft lap into the 7"casing shoe. b. Cement 4-1/2" liner with 15.8 ppg class"G"cement. c. Set hanger and liner top packer d. Pressure test 4-1/2" liner to 3,500 psi for 30 minutes. e. POOH, LD liner running tool. 7. Run 4-1/2"Completion: a. RU and run a 4-1/2", 12.6 ppf, 13Cr-85, VamTop completion. Space out and land the tubing with the tubing tail inserted into the liner tie back sleeve. Run in lock down screws. b. Displace well to seawater completion fluid through the IA. c. Drop ball and rod to RHC plug. d. Test tubing and IA to 3500 psi e. Shear DCK valve. f. Pump enough diesel freeze protect fluid into the IA to protect to 2,200 ft TVD on both tubing and IA. g. RU jumper line between tubing and IA to allow diesel to U-tube into tubing. 8. Nipple Down BOPE/Nipple Up Production Tree and Freeze Protect: a. Install TWC and test. Nipple down BOPE. b. N/U the tubing head adapter flange and dry hole tree. c. Test tubing head adapter flange and tree to 250 psi for 5 minutes/5,000 psi d. Install VR plugs in the annulus valves as needed and secure the well. Ensure that both IA and OA are protected by two barriers. 9. Release Rig: I.Rig down and move off location. Post-Rig Operations 1. Change out from dry hole tree 2. DSM Pull TWC. 3. MIRU slick line. Pull ball and rod/RHC plug from landing nipple below production packer. 4. Install GLVs. 5. ASRC Flow Back. 6. Install the well house, instrumentation, s-riser. N-31 PTD 10 9/28/2015 • • N-31 Drilling Critical Issues POST THIS NOTICE IN THE DOGHOUSE I. Well Control/ Reservoir Pressures ✓ A. Surface Hole: D-Pad has had instances of shallow gas broaching from offset gas-lifted wells. Those wells have been repaired. If broaching occurs follow LCM contingency plan to mitigate fluid to surface. "" B. Intermediate Hole: The UG3 is expected to be a 9.3 ppg EMW. The CM1, CM2 are expected to be a 10 ppg EMW. Formation pressures will be controlled with a 10.0 ppg — 10.2 ppg mud to drill to within 200' MD of the CM2. At this point, there will be a weight up to 10.2— 10.4 ppg to drill the rest of the interval to TD. C. Production Hole: Expected to be at a 7.25 ppg EMW. Reservoir pressures will be controlled by using 8.6 ppg—9.0 ppg water based mud. II. Lost Circulation/Breathing A. Intermediate Hole: There are no expected fault crossings in the first intermediate hole. However, breathing has been known to occur in the Colville on other Drill Sites in Prudhoe Bay as a result of high ECD's. B. Production Hole: There are 2 expected fault crossings in the production hole. Past wells have experienced minor lost circulation. III. Fault Locations Formation Where MD Intersect TVDss Throw Direction Uncertainty Lost Circ Fault Encountered Intersect and Magnitude Potential Zone 4 9485'-9685' -8668 20' DT to NW 200' MD low Zone 2 12230-12430 -8965 20' DT to S 200' MD low IV. Integrity Testing Test Point Test Depth Test type EMW(lb/gal) 9-5/8"Shoe 20'-50'from the 9-5/8" shoe LOT 12.01 ppg 7"shoe 20'-50'from the 7" shoe FIT 9.1 ppg V. Hydrogen Sulfide Recent H2S data from the pad is as follows: ✓/,1/6,.,/�/ii//rte/%/ �iiiE,�f ��„iA G. Well NaMS> F'12$k,e,"".f?,j1= '.-° #1 Closest SHL Well H2S Level N-08A 20 ppm 12/14/2014 #2 Closest SHL Well H2S Level N-04A 20 ppm 07/22/2012 #1 Closest BHL Well H2S Level N-21A 8 ppm 01/14/2015 #2 Closest BHL Well H2S Level N-12 4 ppm 01/17/2014 #3 Closest BHL Well H2S Level N-20A 18 ppm 02/18/2015 #4 Closest BHL Well H2S Level H-30 6 ppm , 06/21/2015 Max. Recorded H2S on Pad/Facility N-06 55 ppm 12/07/2008 VI. Anti-Collision Issues ➢ None.All offset wells pass BP Anti-collision Scan Criteria. CONSULT THE N-PAD DATA SHEET AND THE WELL PLAN FOR ADDITIONAL INFORMATION. N-31 PTD 11 9/28/2015 • • Attachments Proposed Schematic I TAM= 41136-CIA MiEiL1 D-FPCOae V N-31 SAFEIY NOT YAELLANGLEr 7F Q "' AC:MJA TOR= PROPOSAL. mAX DOGLEG: .//) •••• o aa.ev= ; - .4 Br.MEW_ _._ i K W 20'MSIAATED -1 artA� um '--19-518-TAM PORTCi4LLAR Max Angle=CI'®ti 7832 OOMMCIDFI. , y2. -25004V£" 0 • I$ X NP,0=3.813.1 CLiun MD- e.....m N. ... vs.„, [81.1.r.MID MOP SS __ !i __. ... D- GA5LIFT PAANOfi$ 1.6.6•6"CUL 400.440 it 1c,u.5n3s- 1--E4275-77ST he TVD DEV TYPEYtY LATCH SIZE LATE 7 -3000 DOC.2. 6 -5400 DMD IIin-amum El=3.725" —. s -41o0 OW 4-1/2-HES XN NIPPLE 4 :7000 OW 3 -7800 Gdr 2 - 500 air I OW [TOG Es it-1500'(828715) ''._-I —711115' I- , "� ® �4 • ' �� 1rsAP,tsxD.3a1r j , I pr. �. 7-X4/2'1.11Bml 1104.0=3.i8J micx..i -f41fr14E5XNV,D.,3813"' 1 53 : , A ■ .f ' -14-11r H1E5 XN He,I)•3125' ii • 1.TOP OF 41f2' .14.!.1-1- 1-7.15. 9 • T, ..`921.- -1. lUi TX5r 8TEBAACit SLY,0.__ 4-1/r 1116.122.0!,I3CN.i5 YAM TOP, ! --9221 .+_� /is + H!'%S'tlXli WO t-CXRI I2.Y.U 4.340' -0152 Bpi,D=3.958 • �.. .2.'7{ l I--14- 1!2'YAM,D.3. i.. 16 I7•CSC. 26.1-80 YAM TOP NC.I� -33t45', • y• �fLI y k J.-VIMTf NOT WDf.Ai1� 3"f .0387 OW.D-6.276' ,i'0,.., �! 8-8r TQ OIC 30' S*f. T X 5`BXR XQ D•43866I dA r.143 �1�1� y�f. V. 7.,"' : OI rEFFORA ICN SUMMARY j t« . NT IOD:__.._ ON XXYXX/15 ; A BMX AT TOP PEW' •42 • [� y� ' Note Refer 10 Fiaductai DB 1Q kslork/part dib :► TBD 4-1/7'RA PUPJOMT SIZES51S. NTEHVAL 0101361SHOP SOZ f. tPe . 1011. f FWD 4-12 TAG,12,116,13CNAS YAM TOP, -i -13366'j- ;;;:,,147,3,,W,,fiif .0152 bq.1,D-3958' • e#s._ �-7f✓ CkTE REV BY OMAN'S ()kW FEN FN 1.33k6IENES Mat*BAY LAD lamas Afirt paamemona t VA IL nr4 11 i .. ....... ..... 14-1-11111No Ali No: ',,••,•, r», r EP Exploration.(Alaska) N-31 PTD 12 9/28/2015 • • Diverter Layout 121• A 443" r 29 rJwK9N Et Zone 1 i^ # Above_„�___r 22 Dog S lAne"ed iD de es ice,30' k7 *,Lme Set"rms . As N•eded Traffic Lane —, fl22C N-31 !! • i • Pipelines are located directly behind the well slot. Unable to discharge the diverter to the reserve pit. • Considered running the diverter to the south, but there is high difficulty in dismantling the diverter while the mud module is in place. • 22.5°targeted bend is in place to divert flow away from the nearest manifold building. • The best choice is to run the diverter to the north. This allows the 75ft discharge space - requirement per regulatory requirements. N-31 PTD 13 9/30/2015 • Parker 272 Diverter&BOP Schematic PARKER 272 DIVERTER 5.) KYtIL CIVERTER NALLAR MEI R IL• kr,p 21-14.X 2000 FS! 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N.MN (0O0m v-N V(0 mO V NN NM O 0mV ti-MV MN pNO . -N .N0 . .NNNMLOVMONmMmmVV0MWNN0cp05.QN0cpp' O M DDwmO MWo MO O 00000 O�NM 00000 NNM M 77777 77777 77777 777 777 --777 77777 Z C CO Q 0 h 0)V , 0)(00 ') m V 0 0 r 00M.-F-- N-0000(0 m(O m m 0 O O V (') (00(0 W k- (00N 0o V 0 W N V Nom NLON.- 7C/MC,- 0 ,-Nm .(0O0 V NON a U) 0('i0 0000 0(000 (p O W 000 r--604W MONV) 000000NL O(NN Z_ (ON m0,-,-0 mN(0i • i by 0 Schlumberger Borehole: Well: Field: Structure: N-31 (P3) Plan N-31 Prudhoe Bay Unit-WOA N-PAD Gravity 8 Magnetic Parameters Surface Location NAD27 Alaska State Plane,Zone 04,US Feet Miscellaneous Model: BGGM 2015 Dip:81.038° Date: 31-Dec-2075 Lat: N 7019 13.89 Northing: 5968003RUS Grid Cony: 1.0267° Slot: N-31 Plan TVD Ref: Rotary Table(90.95R above MSL) MagDec:19.11° FS: 57523.625nT Gravity FS: 1002.007mgn(9.80665 Based) Lon: W 148 54 36.93 Fasting: 634414RUS Scale Fact: 0.99992052 Plan:9-31(P3) 0 1000 2000 3000 4000 5000 6000 7000 RTE 0 0 MD KOP Cry 1/100 O 930 MD 1 1a50:95�ND) • 50 CI,0 2)M10D0 _.. _.._.._.._.._.._.._.._.._.._.._.._..1221.._.._.._.._.._.._.._.._.._.._.._.._.;_.._.._.._.._.._.._.._.._:._.._.._.._.._.._.._.._..1221.._.._.._.._.._.._.._.._.._.._.._. � .._.._...._.._.._. 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(O (O Ln U7 d' V co co N N r (ui/iisn o 0 uofeaedeS aalua3 of ei ue 0 • BP Anticollision Report Company: North America-ALASKA-BP Local Co-ordinate Reference: Well Plan N-31 Project: Prudhoe Bay TVD Reference: WELL @ 80.80usft(Original Well Elev) Reference Site: PB N Pad MD Reference: WELL @ 80.80usft(Original Well Elev) Site Error: 0.00usft North Reference: True Reference Well: Plan N-31 Survey Calculation Method: Minimum Curvature Well Error: 0.00usft Output errors are at 1.00 sigma Reference Wellbore Plan N-31 Database: EDM R5K-Alaska PROD-ANCP1 Reference Design: Plan#3 N-31 Offset ND Reference: Offset Datum Reference Plan#3 N-31 Filter type: GLOBAL FILTER APPLIED:All wellpaths within 200'+100/1000 of reference Interpolation Method: MD Interval 5.00usft Error Model: ISCWSA Depth Range: Unlimited Scan Method: Tray.Cylinder North Results Limited by: Maximum center-center distance of 1,532.90usft Error Surface: Elliptical Conic Survey Tool Program Date 9/17/2015 From To (usft) (usft) Survey(Wellbore) Tool Name Description 36.80 1,100.00 Plan#3 N-31(Plan N-31) GYD-GC-SS Gyrodata gyro single shots 1,100.00 2,600.00 Plan#3 N-31(Plan N-31) MWD MWD-Standard 1,100.00 3,260.00 Plan#3 N-31(Plan N-31) MWD+IFR+MS-WOCA MWD+IFR+Multi Station W/O Crustal 3,260.00 4,760.00 Plan#3 N-31(Plan N-31) MWD MWD-Standard 3,260.00 9,350.00 Plan#3 N-31(Plan N-31) MWD+IFR+MS-WOCA MWD+IFR+Multi Station W/O Crustal 9,350.00 10,850.00 Plan#3 N-31(Plan N-31) MWD MWD-Standard 9,350.00 13,365.30 Plan#3 N-31(Plan N-31) MWD+IFR+MS-WOCA MWD+IFR+Multi Station W/O Crustal 9/17/2015 12:46:41PM Page 2 of COMPASS 5000.1 Build 61 i • BP Anticollision Report Company: North America-ALASKA-BP Local Co-ordinate Reference: Well Plan N-31 Project: Prudhoe Bay TVD Reference: WELL @ 80.80usft(Original Well Elev) Reference Site: PB N Pad MD Reference: WELL @ 80.80usft(Original Well Elev) Site Error: 0.00usft North Reference: True Reference Well: Plan N-31 Survey Calculation Method: Minimum Curvature Well Error: 0.00usft Output errors are at 1.00 sigma Reference Wellbore Plan N-31 Database: EDM R5K-Alaska PROD-ANCP1 Reference Design: Plan#3 N-31 Offset TVD 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) GC-2 GC-2E-GC-2E-GC-2E Out of range PB H Pad H-05-H-05A-H-05A 12,750.00 12,145.00 1,347.26 630.94 716.54 Pass-Major Risk H-05-H-05B-H-05B 12,728.14 12,045.00 1,394.14 636.99 757.33 Pass-Major Risk H-27-H-27A-H-27A Out of range H-30-H-30-H-30 12,916.20 11,620.00 733.67 195.62 538.17 Pass-Major Risk PB J Pad JX-02-JX-02-JX-02 11,900.00 11,700.00 549.59 169.48 382.06 Pass-Major Risk JX-02-JX-02A-JX-02A 12,408.90 11,277.00 851.37 159.20 694.38 Pass-Major Risk PB N Pad N-02-N-02-N-02 6,757.67 7,005.00 535.60 318.44 220.62 Pass-Major Risk N-03-N-03-N-03 2,057.82 1,975.00 384.02 39.84 344.75 Pass-Major Risk N-04-N-04-N-04 1,008.64 990.00 287.80 25.88 261.92 Pass-Major Risk N-04A-N-04A-N-04A 934.13 940.00 285.10 16.00 269.10 Pass-Major Risk N-05-N-05-N-05 859.52 840.00 182.81 17.00 165.82 Pass-Major Risk N-06-N-06-N-06 688.58 670.00 77.98 12.32 65.66 Pass-Major Risk N-07-N-07-N-07 612.16 595.00 121.26 15.20 106.06 Pass-Major Risk N-07-N-07A-N-07A 611.31 605.00 121.25 15.19 106.06 Pass-Major Risk N-08-N-08-N-O8 518.93 500.00 21.56 9.32 12.24 Pass-Major Risk N-08-N-08A-N-08A 518.93 500.00 21.56 9.32 12.24 Pass-Major Risk N-12-N-12-N-12 7,977.93 7,845.00 144.80 117.77 58.53 Pass-Major Risk N-14-N-14-N-14 2,602.56 2,455.00 545.57 57.59 487.96 Pass-Major Risk N-14-N-14A-N-14A 2,601.82 2,450.00 545.62 57.68 487.93 Pass-Major Risk N-14-N-14B-N-14B 2,601.82 2,450.00 545.62 57.68 487.93 Pass-Major Risk N-14-N-14BPB1-N-14BPB1 2,601.82 2,450.00 545.62 57.68 487.93 Pass-Major Risk N-20-N-20A-N-20A 11,400.00 12,025.00 1,033.69 207.13 827.34 Pass-Major Risk N-21-N-21-N-21 11,576.96 10,965.00 481.13 212.47 276.76 Pass-Major Risk N-21-N-21 A-N-21A 11,398.25 10,840.00 498.25 197.06 323.92 Pass-Major Risk N-22-N-22-N-22 4,698.36 4,405.00 734.83 86.51 653.31 Pass-Major Risk N-22-N-22A-N-22A 4,698.36 4,405.00 734.83 86.40 653.42 Pass-Major Risk N-22-N-22B-N-22B 4,696.22 4,395.00 734.83 86.34 653.45 Pass-Major Risk N-23-N-23-N-23 650.84 645.00 55.17 14.89 40.28 Pass-Major Risk N-23-N-23A-N-23A 650.84 645.00 55.17 14.89 40.28 Pass-Major Risk N-24-N-24-N-24 2,174.42 2,045.00 441.80 53.56 388.28 Pass-Major Risk N-26-N-26-N-26 639.01 635.00 152.40 10.35 142.10 Pass-Major Risk N-27-N-27-N-27 547.24 540.00 184.59 9.05 175.57 Pass-Major Risk N-28-N-28-N-28 3,862.34 3,725.00 102.70 67.72 52.83 Pass-Major Risk N-30-N-30-N-30 579.06 590.00 86.28 10.12 76.16 Pass-Major Risk PB Q Pad Q-01-Q-01-Q-01 Out of range 0-01-Q-01 A-Q-01 A Out of range 9/17/2015 12:46:41PM Page 3 of 4 COMPASS 5000.1 Build 61 • Project: Prudhoe Bay • Site: PB N Pad Well: Plan N-31 Wellbore: Plan N-31 From Colour To MD Design: Plan #3 N-31 37 600 600 1100 1100 1700 1700 3300 From Scan Surfaclne to QQ(1 and (9-5/8)tera135 ft Scale 1 inch : 50ft 3300 3900 All wells pass the major risk 3900 4500 See AC summary report for details 4500 5000 et, 5000 5500 _ `� 5500 6000 Mo 6000 6500 /\ 6500 7000 ^ r / _ 30 7000 -____- 7500 � �M�Noe� , ,. 7500 8000 8000 8500 �1, 8500 9000 ; f4�da1 9878055000°000°0 000 .—— 9500 • 66 ‘ 1 b44#11,4 , no 9500 10000 13 � Iy�i�' ��F 10000 3 30c 7' i/ ��"�� • • • 60 115',1 ® , i 75 ' 1.40 "01§c1 f7�4c02 -- :7 17 � •ijie e��•�'��i�1��' S�yO T Vi 4 x` `±'•57 - k.4% 8—. witiv -3@i,.,,,e,...,..-------,,= N,.., . . .. ... . , .. - ,4*4-4...41.4,4&.„...44.,,, ilv, , . apv--• - . • 270 I 1 I 1so z 14 I I kAl‘gl. IP..::4 0,V,1*-•,0.,*_;4....i..,,,., ,•• .;.*••., ;.. tir If Il 44ci2cI. . 83 959-)3€9123&36.841411. 7,41,.. *--.1 F 240 \ ��-�� • 120 100 125 210 150 150 180 Azimuth from North[0]vs Centre to Centre Separation[41 usft/in] • Project: Prudhoe Bay • Site: PB N Pad Well: Plan N-31 Wellbore: Plan N-31 From Colour To MD Design: Plan #3 N-31 37 600 600 1100 From 32 0'md(9-5/ o 9400'md (7") 1100 1700 scan irnteral tt ft 1700 3300 Scale 1 inch :50ft 3300 3900 All wells pass the major risk 3900 4500 See AC summary report for details 4500 5000 5000 5500 _ 0 5500 6000 1 r:-. 6000 6500 �� , , E " 1.1111 6500 7000 330, 1 , i i � 7000 7500 ii, 7500 8000 �1 ,,: ��i 111111111VVIA:Ali441011110,30 8000 8500 �� >' '1+1� ®®®40 8500 9000 \� , -Aja +®0#.4#®.��®,.�'44�►ittleO�� 9000 9500 Aliv iiii ,Al lb i 10 jilt,��441-r ®�...w 40 ®®�®�.we*4 014. 41 9500 10000 i.t. lit V Pk��IIIs'41��1♦4j�� PUP4sei, 10000 13366 300 lib riklottfitts,;#*#='-#4=:,"=-410-1-- --41,4-4-T.-tcr--T-7- liVI 4a � q/I��folly* �ol! � .► - *-. 5-551.--„----- ----.. /jig, ••• -• yto ":f ly*\ 0. 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'100 9500 10000 10000 13366 75 2 _ • 270 I • I I 1 90 • • • _50 75 240 120 10 125 210 '. 150 150...-.-.-_ 180 Azimuth from North [°]vs Centre to Centre Separation[41 usft/in] • • North America - ALASKA - BP Prudhoe Bay PB N Pad Plan N-31 Plan N-31 Plan #3 N-31 AOGCC pre-job report 200' radius scan Anticollision Summary Report 18 September, 2015 • 0 — — r T o o —— — -1- -E -+- --t- jcoCO 1 i N I o __... -...... __.— r -O co / f � q 3TIPIan#3 N-311 o o -0 c�ONN a, � I i , , „ p d STI W S O1 —N , o osyt '_. �8.. 7_11> ---_. Vu N/tZ id o to vo i i 99 i O� o -0 b8 8� a dg 1 0 bloN/ ”' tI I _o 0o c O� = 88 0 J8 :)c ° zl �s —N °SIF "' 89 I I �,� coto 99 , `'9 '� Z o w .__.-1 --------�...-- O A p —..i.. o itP b99 I � ' e cP m co �� DN v 8 i9 r r-- .• N 09 6 �8 �`fl o o I as 9 �F :4g p8 N S b'. ki....,. :. 'S o • 10 0�ea,., N 9S 8b bS VV.' ,6 !�9::::41: i, o I .---�-- �,i...._. r- _ ------- 99 --- —S .g ct„ Ob I 8�. 99 O .2 8E• , 9is 0, 9 9E '' ea 9 0 8� zE 2� I 02 Oa i A. 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These materials may be found in the original hard file or check the parent folder to view it in digital format. 1110 TRANSMITTAL LETTER CHECKLIST WELL NAME: `da AI 3 / PTD: 5� IDevelopment _Service —Exploratory _Stratigraphic Test _Non-Conventional FIELD: lr 06r– POOL: 14-1?-4-X-46'4--' 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- - - - (If last two digits Production should continue to be reported as a function 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 (name on permit). The permit is approved subject to full compliance with 20 AAC 25.055. Approval to produce/inject is contingent upon issuance of a conservation Spacing Exception 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 AOGCC must be in no greater Dry Ditch Sample than 30' sample intervals from below the permafrost or from 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 Non-Conventional (name of well) until after (Company Name) has designed and Well implemented a water well testing program to provide baseline data on water quality and quantity. (Company Name) must contact the AOGCC 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. 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