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Home My WebLink About207-0537. 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 12-05A K-Valve Redesign Hilcorp North Slope, LLC 3800 Centerpoint Dr, Suite 1400, Anchorage, AK 99503 207-053 50-029-20391-01-00 14147 Conductor Surface Intermediate Liner Liner 8756 80 2695 5676 6527 2253 14059 20" 13-3/8" 9-5/8" 7" 4-1/2" 8754 31 - 111 28 - 2723 26 - 5702 5539 - 12066 11892 - 14145 30 - 110 28 - 2721 25 - 5238 5120 - 8711 8623 - 8755 none 520 2670 4760 / 5080 5410 7500 none 1530 5380 6870 / 8150 7240 8430 13300 - 14050 4-1/2" 12.6# 13Cr80 13Cr80 23 - 11899 8739 - 8754 Structural Baker S-3 Perm, 11841 , 8599 4-1/2" K-valve, 2189 / 2188 11841 8599 Bo York Operations Manager David Bjork David.Bjork@hilcorp.com 907.564.4672 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 0028331 , 0028330 23 - 8628 183 167 3628 3565 164 155 1561 1574 295 293 323-033 13b. Pools active after work:PRUDHOE OIL 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 8:30 am, Feb 16, 2023 Digitally signed by Bo York (1248) DN: cn=Bo York (1248), ou=Users Date: 2023.02.15 15:09:47 -09'00' DSR-2/22/23WCB 11-20-2023 Sundry Number 323-033 207-053 K-Valve Redesign PBU 12-05A PRUDHOE BAY / PRUDHOE OIL ACTIVITYDATE SUMMARY 1/22/2023 ***WELL FLOWING ON ARRIVAL*** (sssv maintenance) PULLED 3.81" K-VALVE (sn: K45C) @ 2189' MD SET 3.81" K-VALVE (sn: 22K43) @ 2189' MD (sn: 22K43, dome set 242 psi @ 60*, 43" oal, 4x 1/8" eq ports) RAN CHECKSET TO K-VALVE @ 2189' MD (sheared) PERFORMED FAILING CLOSURE TEST (see log) PULLED 4-1/2" K-VALVE (sn: 22K43) AT 2,189' MD ****WILL RETURN AFTER VALVE IS REDESIGNED**** ***WELL S/I ON DEPARTURE/ DSO NOTIFIED OF WELL STATUS*** 1/24/2023 ****WELL S/I ON ARRIVAL**** DRIFT/BRUSH X-NIP @ 2189' MD SET 3.81" K VALVE (sn# 22K43) IN X-NIP @ 2189' MD ****CONT, WSR ON 1/25/2023**** 1/25/2023 ****CONT, WSR FROM 1/24/2023**** RAN 4-1/2" CHECKSET TO 2173' SLM(good set) PERFORM DRAW DOWN TEST THRU FLOWLINE (good test) ****JOB COMPLETE, WELL SET UP TO BACKFLOW ON DEPARTURE PER DSO REQUEST**** Daily Report of Well Operations PBU 12-05A PERFORM DRAW DOWN TEST THRU FLOWLINE (good test) WILL RETURN AFTER VALVE IS REDESIGNED ( PULLED 3.81" K-VALVE (sn: K45C) @ 2189' MD()@ SET 3.81" K-VALVE (sn: 22K43) @ 2189' MD (sn: 22K43, dome set 242 psi @ 60*,( 43" oal, 4x 1/8" eq ports) (g) PULLED 4-1/2" K-VALVE (sn: 22K43) AT 2,189' MD() RAN CHECKSET TO K-VALVE @ 2189' MD (sheared) ) RAN 4-1/2" CHECKSET TO 2173' SLM(good set)(g ) @ SET 3.81" K VALVE (sn# 22K43) IN X-NIP @ 2189' MD 7. If perforating: 1. Type of Request: 2. Operator Name: 3. Address: 4. Current Well Class:5. Permit to Drill Number: 6. API Number: 8. Well Name and Number: 9. Property Designation (Lease Number):10. Field: Abandon Suspend Plug for Redrill Perforate New Pool Perforate Plug Perforations Re-enter Susp Well Other Stimulate Fracture Stimulate Alter Casing Pull Tubing Repair Well Other: Change Approved Program Operations shutdown What Regulation or Conservation Order governs well spacing in thes pool? Will planned perforations require a spacing exception?Yes No 11. Total Depth MD (ft): Total Depth TVD (ft): Effective Depth MD: Effective Depth TVD: MPSP (psi): Plugs (MD): Junk (MD): PRESENT WELL CONDITION SUMMARY Perforation Depth MD (ft): Perforation Depth TVD (ft):Tubing Size: Tubing Grade: Tubing MD (ft): Packers and SSSV Type:Packers and SSSV MD (ft) and TVD (ft): Casing Length Size MD TVD Burst Collapse Exploratory Stratigraphic Development Service 12. Attachments: 14. Estimated Date for Commencing Operations: 13. Well Class after proposed work: 15. Well Status after proposed work: 16. Verbal Approval: 17. I hereby certify that the foregoing is true and the procedure approved herein will not be deviated from without prior written approcal. Proposal Summary Wellbore schematic BOP SketchDetailed Operations Program OIL GAS WINJ WAG GINJ WDSPL GSTOR Op Shutdown Suspended SPLUG Abandoned ServiceDevelopmentStrastigraphicExploratory Authorized Name and Digital Signature with Date: Authorized Title: Contact Name: Contact Email: Contact Phone: AOGCC USE ONLY Commission Representative: Conditions of approval: Notify Commission so that a representative may witness Sundry Number: Location ClearanceMechanical Integrity TestBOP TestPlug Integrity Other: Post Initial Injection MIT Req'd? Spacing Exception Required?Yes Yes No No Subsequent Form Required: Approved By:Date: APPROVED BY THE AOGCCCOMMISSIONER PBU 12-05A K-Valve Redesign Hilcorp North Slope, LLC 3800 Centerpoint Dr, Suite 1400, Anchorage, AK 99503 207-053 50-029-20391-01-00 ADL 0028331 , 0028330 14147 Conductor Surface Intermediate Liner Liner 8756 80 2695 5676 6527 2253 14059 20" 13-3/8" 9-5/8" 7" 4-1/2" 8754 31 - 111 28 - 2723 26 - 5702 5539 - 12066 11892 - 14145 30 - 110 28 - 2721 25 - 5238 5120 - 8711 8623 - 8755 none 520 2670 4760 / 5080 5410 7500 none 1530 5380 6870 / 8150 7240 8430 13300 - 14050 4-1/2" 12.6# 13Cr80 13Cr80 23 - 118998739 - 8754 Structural Baker S-3 Perm 4-1/2" HES PB Valve 11841 / 8599 2189 / 2188 Date: Bo York Operations Manager David Bjork David.Bjork@hilcorp.com 907.564.4672 PRUDHOE BAY 1/21/2023 Current Pools: PRUDHOE OIL Proposed Pools: PRUDHOE OIL STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION APPLICATION FOR SUNDRY APPROVALS 20 AAC 25.280 Comm. Comm.Sr Pet Eng Sr Pet Geo Sr Res Eng Form 10-403 Revised 10/2022 Approved application is valid for 12 months from the date of approval.Submit PDF to aogcc.permitting@alaska.gov 1668 delegation to approve from Bo By Meredith Guhl at 7:08 am, Jan 23, 2023 323-033 Digitally signed by David Bjork (3888) DN: cn=David Bjork (3888), ou=Users Reason: I am approving this document. Date: 2023.01.21 12:20:46 -09'00' David Bjork (3888) DLB 01/24/2023 Mel Rixse MGR30JAN23 DSR1/23/23 Yes 23-JAN-2023 10-404 X GCW 01/30/23 JLC 1/30/2023 1/30/23Brett W. Huber. Sr.Digitally signed by Brett W. Huber. Sr. Date: 2023.01.30 14:28:39 -09'00' RBDMS JSB 020223 Well Work Prognosis Well Name:12-05a API Number:50-029-20391-01 Current Status:Oil Well Leg:Comingled A and AL1 Estimated Start Date:1/21/23 Rig:N/A Reg. Approval Req’d?10-403 Date Reg. Approval Received: Regulatory Contact:Carrie Janowski Permit to Drill Number:207-0530 First Call Engineer:Dave Bjork Office: 907-564-4672 Cell: 907-440-0331 Second Call Engineer:Eric Dickerman Office:Cell: 307-250-4013 Current Bottom Hole Pressure: 2,548 psi @ 8,800’ TVD Maximum Potential Surface Pressure: 1,668 psi Using 0.1 psi/ft gradient per 20 AAC 25.280(b)(4) Brief Well Summary The objective of this intervention is to install a new K valve with adjusted closing pressure. The current K valve is set to close at ~198 psi @ 60°F. The existing valve failed to close while testing on 01/20/23. The new valve will be set to close at ~242 psi surface pressure. The common line of 12-05 flows at approximately ~180 psi. To test the valve we will open the production choke to common line pressure or divert to a depressurized separator. To reset the valve, the well will be pressured up to above the trip pressure then gradually reopened to the normal operating range. Procedure: 1. MIRU Slick-line 2. Pull existing K valve design. 3. RIH and set the subsurface controlled subsurface safety valve. 4. Turn well over to production. 5. Conduct a SVS test within 5 days after stabilized flow. -00 DLB Well Work Prognosis Well Work Prognosis "K" Valve Calculation Sheet Well #12-05A Date:01/21/23 Test Data Test Date 01/05/23 Gross Fluid Rate 347 BLPD Flowing Well Head Pressure 295 psi Flowing Well Head Temperature 80 deg F GOR 19877 scf/bbl TGLR 21680 scf/bbl "K" Valve Setting Depth TVD 2189 ft Flowing Tubing Pressure @ 225 Pwh 349 psi "K" Valve Set to Close at 235 psi Pwh "K" Valve Test Rack Set Pressure at 60 deg F 242 psi Operator Name:2. Development Exploratory Service 5 Permit to Drill Number:207-053 6.50-029-20391-01-00 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 14147 14059 8754 none none 5128 , 8599, 8629 Casing: Length: Size: MD: TVD: Burst: Collapse: Structural Conductor 80 20" 31 - 111 30 - 110 1530 520 Surface 2695 13-3/8" 28 - 2723 28 - 2721 5380 2670 Intermediate 5676 9-5/8" 26 - 5702 25 - 5238 6870 / 8150 4760 / 5080 Liner 6527 7" 5539 - 12066 5120 - 8711 7240 5410 Perforation Depth: Measured depth: 13300 - 14050 feet True vertical depth:8739 - 8754 feet Tubing (size, grade, measured and true vertical depth)4-1/2" 12.6# 13Cr80 23 - 11898 23 - 8627 5550, 11841, 119 5128, 8599, 8629Packers and SSSV (type, measured and true vertical depth) Baker ZXP Top Packer, Baker S-3 Perm Packer Liner 2253 4-1/2" 11892 - 14145 8623 - 8755 8430 7500 12. Stimulation or cement squeeze summary: Intervals treated (measured): Oil-Bbl Gas-Mcf Water-Bbl Casing Pressure Tubing Pressure 5811566108151 913133 1569 1933 239 235 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: Dave Bjork David.Bjork@hilcorp.com Authorized Name:Bo York Authorized Title: Authorized Signature with Date:Contact Phone:(907) 564-4672 Treatment descriptions including volumes used and final pressure: 13. Operations Manager Operations Performed1. Abandon Plug Perforations Fracture Stimulate Pull Tubing GSTOR WINJ WAG GINJ SUSP 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 measured8756 Sundry Number or N/A if C.O. Exempt: 320-419 4-1/2" HES PB Valve 2189 2188 Junk Packer Printed and Electronic Fracture Stimulation Data 5 K valve redesign Operations shutdown Change Approved Program 5 Senior Pet Engineer:Senior Res. Engineer: STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS Suspend Perforate Other Stimulate Alter Casing Plug for Redrill Perforate New Pool Repair Well Re-enter Susp Well 3.Address: 3800 Centerpoint Dr, Suite 1400, Anchorage, AK 99503 7.Property Designation (Lease Number):ADL 028331, 028330 PBU 12-05A 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 5550 , 11841 , 11903 By Samantha Carlisle at 2:54 pm, Nov 25, 2020 Digitally signed by Bo York DN: cn=Bo York, c=US, o=HIlcorp Alaska LLC, ou=Alaska North Slope, email=byork@hilcorp.com Date: 2020.11.25 11:37:13 -09'00' Bo York RBDMS HEW 11/25/2020 SFD 11/30/2020DSR-11/25/2020MGR30NOV20 ACTIVITYDATE SUMMARY 11/3/2020 ***WELL FLOWING ON ARRIVAL*** (sssv maintenance) DRIFTED & EQUALIZED PB VALVE @ 2,189' MD w/ 3.84" NO-GO, EQ PRONG. PULLED 4-1/2" PB VALVE FROM 2,189' MD. SET 4-1/2" K-VALVE # K-44A (198 psi @ 60*) @ 2,189' MD. (check set) ***JOB COMPLETE, WELL LEFT S/I*** 11/9/2020 ***WELL S/I ON ARRIVAL***(sssv maint). EQUALIZE & PULL HES K VLV SSSV (ser-K44A) @ 2,189' MD. ***JOB CONTINUED ON 11/10/20 WSR*** 11/9/2020 ***WELL S/I ON ARRIVAL***(sssv maint). EQUALIZE & PULL HES K VLV SSSV (ser-K44A) @ 2,189' MD. ***JOB CONTINUED ON 11/10/20 WSR*** 11/10/2020 ***JOB CONTINUED FROM 11/9/20 WSR***(sssv maint). SET 4-1/2" HES K-VALVE SSSV (lih 43", x eq, ser-K45A) @ 2,189' MD. RAN 4-1/2" CHECK SET TO K-VALVE @ 2,189' MD (sheared). ***JOB COMPLETE, WELL LEFT S/I ON DEPARTURE*** Daily Report of Well Operations PBU 12-05A Operator Name:2. Exploratory Development Service 5 Permit to Drill Number:207-053 6.API Number:50-029-20391-01-00 PRUDHOE BAY, PRUDHOE OIL Hilcorp North Slope, LLC 5. Field/Pools:9. Well Name and Number: ADL 028331 Property Designation (Lease Number):10. n/a 8. PBU 12-05a 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 K valve redesign Op Shutdown GAS GSTORWAG SPLUG Abandoned Oil 5 WINJ Exploratory Development 5StratigraphicService WDSPL 12. Attachments: PRESENT WELL CONDITION SUMMARY 14147 Effective Depth MD: 13Cr80 11. 10/10/2020 Commission Representative: 15. Suspended Contact Name: Dave Bjork Contact Email: David.Bjork@hilcorp.com Authorized Name: Bo York Authorized Title: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: 4-1/2" HES PB Valve Packers and SSSV MD (ft) and TVD (ft): Perforation Depth MD (ft):Tubing Size: Size Total Depth MD (ft):Total Depth TVD(ft): 8756 Effective Depth TVD:Plugs (MD):Junk (MD): Other Stimulate Re-enter Susp Well Suspend Plug for Redrill Perforate Perforate New Pool 5550 , 5128 / 11841, 8599 / 11903, 8629 2189, 2188 Date: Liner 2253 4-1/2" 11892 - 14145 8623 - 8755 8430 7500 Well Status after proposed work: 16. Verbal Approval: Change Approved Program 28 - 2723 28 - 2721 14. Estimated Date for Commencing Operations: BOP Sketch 31 - 111 Structural 6870 / 8150 Proposal Summary 13. Well Class after proposed work: Baker ZXP Top Packer, Baker S-3 Perm Packer 13300 - 14050 8739 - 8754 4-1/2" 12.6# 13Cr80 23 - 11899 Liner 14059 8754 none none 30 - 110 520 13-3/8" 9-5/8" Contact Phone:(907) 564 - 4672 Date: 10/1/2020 4760 / 5080 80 153020"Conductor 2670 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 2695 5380 Intermediate 5676 26 - 5702 25 - 5238 6527 7"5539 - 12066 5120 - 8711 7240 5410 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 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 Samantha Carlisle at 11:11 am, Oct 05, 2020 320-419 Digitally signed by Bo York DN: cn=Bo York, c=US, o=HIlcorp Alaska LLC, ou=Alaska North Slope, email=byork@hilcorp.com Date: 2020.10.05 09:12:25 -08'00' Bo York 10-404 DSR-10/12/2020 ; ADL0028330 DLB MGR07OCT20 DLB10/05/2020 1668 X Per 20 AAC 25.265 (h) (2) SSSV function - test required. and Per 20 AAC 25.265 (h)(2) 24 hour notice to AOGCC to witness. Yes Required? Comm 10/13/2020 dts 10/12/2020 JLC 10/13/2020 RBDMS HEW 11/3/2020 Well Work Prognosis Well Name:12-05a API Number:50-029-20391-01 Current Status:Oil Well Leg:Comingled A and AL1 Estimated Start Date:Oct 7, 2020 Rig:N/A Reg. Approval Req’d?10-403 Date Reg. Approval Received: Regulatory Contact:Carrie Janowski Permit to Drill Number:207-0530 First Call Engineer:Dave Bjork Office: 907-564-4672 Cell: 907-440-0331 Second Call Engineer:Ryan Thompson Office: 907-564-5280 Cell: 907-301-1240 Current Bottom Hole Pressure: 2,548 psi @ 8,800’ TVD Maximum Potential Surface Pressure: 1,668 psi Using 0.1 psi/ft gradient per 20 AAC 25.280(b)(4) Brief Well Summary The objective of this intervention is to install a new K valve with adjusted closing pressure. The current K valve is set to close at ~432 psi @ 60°F. The new valve will be set to close at ~225 psi surface pressure. The commonline of 12-05 flows at approximately ~180 psi. This change will allow operations to no longer apply choked backpressure to the well to keep the valve open, while still closing if a surface integrity issue occurs. To test the valve we will open the production choke to common line pressure or divert to a depressurized separator. To reset the valve, the well will be pressured up to above the trip pressure then gradually reopened to the normal operating range. Procedure: 1. MIRU Slick-line 2. Pull existing K valve design. 3. RIH and set the subsurface controlled subsurface safety valve. 4. Turn well over to production. 5. Conduct a SVS test within 5 days after stabilized flow. Peformance test to be witnessed by AOGCC. 24 hour notice. Well Work Prognosis Well Work Prognosis STATE OF ALASKA • • ALASKA OIL AND GAS CONSERVATION COM ON REPORT OF SUNDRY WELL OPERATIONS 1. Operations Performed Abandon 0 Plug Perforations 0 Fracture Stimulate 0 Pull Tubing 0 Operations shutdown ❑ Suspend 0 Perforate 0 Other Stimulate Alter Casing 0 Change Approved Program 0 Plug for Redrill ❑ Perforate New Pool 0 Repair Well ❑ Re-enter Susp Well 0 Other:PB-Valve m 2. Operator Name: BP Exploration(Alaska),Inc 4. Well Class Before Work 5. Permit to Drill Number: 207-053 3. Address: P.O.Box 196612 Anchorage, Development I1 Exploratory ❑ AK 99519-6612 Stratigraphic 0 Service ❑ 6. API Number: 50-029-20391-01-00 7. Property Designation(Lease Number): ADL 0028331 8. Well Name and Number: PBU 12-05A 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 Total Depth: measured 14147 feet Plugs measured feet true vertical 8756 feet Junk measured feet FE 3 2 5 2016 Effective Depth: measured 14059 feet Packer measured 11841 feet true vertical 8754 feet Packer true vertical 8599 feet �"'^t,G Casing: Length: Size: MD: TVD: Burst: ,,f AOGCC Structural Conductor 80 20"94#H-40 31 -111 31 -111 1530 520 Surface 2695 13-3/8"72#L-80 28-2723 28-2721 4930 2670 Intermediate See Attachment See Attachment See Attachment See Attachment See Attachment See Attachment Production Liner See Attachment See Attachment See Attachment See Attachment See Attachment See Attachment Perforation Depth: Measured depth: 13300-13610 feet 13730-13770 feet 13770-14050 feet True vertical depth: 8739-8752 feet feet 8754-8753 feet 8753-8754 feet Tubing(size,grade,measured and true vertical depth) 4-1/2"12.6#13Cr80 23-11$jtp 23-8627 Packers and SSSV(type,measured and See Attachment See Attachment See Attachment true vertical depth) 4-1/2"HES PB Valve 2189 2189 12.Stimulation or cement squeeze summary: Intervals treated(measured): Treatment descriptions including volumes used and final pressure: iCANNECT . r71 ' 13. Representative Daily Average Production or Injection Data Oil-Bbl Gas-Mcf Water-Bbl Casing Pressure Tubing Pressure Prior to well operation: 8 0 13 1118 484 Subsequent to operation: 76 1024 294 1066 201 14.Attachments:(required per 20 AAC 25.070.25.071,&25.283) 15.Well Class after work: Daily Report of Well Operations ® Exploratory ❑ Development Q 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 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: 316-085 Contact Catron,Garry R(Wipro) Email Garry.Catron@bp.com Printed NameCatron,Garry R(Wipro) Title PDC Principal Engineer/ Signature : Phone +1 907 564 4424 Date 2/25/16 Form 10-404 Revised 5/2015 5 `Y/i611- r I RBDMS ISL FEB 2 6 2016 Submit Original Only • m co N O O CO CoCD D O '- 0 0 V tip 0 0 0 0 0 0 0 0 0 i 01 C'r) Tr N- LO N- Tr co M m '- NrN- CO00Q0 NsODCO Y- CO OD N OD N CO N- - N N N N C'r) c- LO N I� r- V- M N r- r- CO N LO N N UD OD 00 OD .... 111111111 N- N O T' V.- CO U) CO N N N N CV) 07 N N N V- 0/ CO N N N LO CO it CD C'7r- 00ChNCflUDCA N N N O 0 Nr 09 I� LO - co _ ' N Ln N N LO c T- CU I I I Q C - ODCC') CONNMOCr) coco N N N T- 0/ LO N _ N N LO n oma OOp O LO O co 00 C ,r _1, CD I J CU i 00 J (/) J OD CV = N J *k �# *k J CSO *k •N N4# u# TrTrTr0NC • Cl) CD CO _ CO N CV Ch O O) Ocv 4 4 }' LO N N CD Ps C'7 CD O CA N O LC) Ps N CC) N- C 00 CO Ln O Cr) Cf) N O J N LO N ' Ch CO N UJ w w w c° 0000 'U wwwww C� ou � � � cctc2 Zawwwwwwm OAF- rHf- ZZ � V 0) Z Z Z Z =1711_ • • Packers and SSV's Attachment PBU 12-05A SW Name Type MD TVD Depscription 12-05A SSSV 2188.73 2188.7 4-1/2" HES PB Valve 12-05A PACKER 5549.92 5128.21 7" Baker ZXP Top Packer 12-05A TBG PACKER 11841.44 8598.98 4-1/2" Baker S-3 Perm Packer 12-05A PACKER 11903.27 8629.63 5" Baker ZXP Top Packer • • r. 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U U , EZZ ZZ � * wO * Ow = a. * * a * 0 ) 00_ ° cccwce * awce ciaWvcna. 000ucn * wcn co ,a- Cr) 0 0 0 0 N N N o L, (n CO N \ N ,- - o N- NCO • 0 $ m CN LI < r m 2 ¥ • p 2 k � a k c•i0 k / Cl) E 0# ( , E kb � / kk ,� o '- -I / 0 » E-/ m0 Ct CI) ffi 6 � / g : cc > CO w 7 y k L _ R E RI ooA / c / % % 2 � § \ O. � � zwf �/ � / 0 / ® 7Din 9 cc > - < co £ 0 / 00 LT C4 � -I % I- R �° b ow 0M �� z > / S � \ / / t032-cow >--• � % � 0 O % _o k z � 2 0 / Z c) ; / 0 00 z 2 b w ƒ ce \ $ � 9 \ q \ 7 � 22 > uO 2 ^ (/). 2mL W < EZ > 2 § u) 0 -I nC < < H Ir ƒ U0 00 O � � 2 �/ ° LUL kO - 0 / 2 I- - Z - = / kq § � "I � ZK1 � / u _12222 44 4w / / ƒ \ Fem / / < wO < k : a m E 2 o ; ! rem 2 2 ; 0 m r \ \/ CO Ta o n f = $ _ OW 110 TREE= _ 111L—NOTES:WELL REQUIRES A SSSV VM3L5D Crw 12-05A WELL ANGLE>70" '^ 12128' " 'ONG WELLBORE NOT " ACTUATOR= BAKB2 C KB.H-EV= 73' AL1 SHOWN BELOW 12-OSA MILLOUT"""4-1/2"CHROME BF.ELEV= TBG KOP= 3300' 20"COND, H 90' ---J • 4 Max Angle= 96°@ 12279' 94#,14-40, ♦ I r-: IIII►D IIIII 2189' —4-1/2"HES X NP,D=3.813" •Datum MD= 11984' D=19,124" �� 2189' —4 1/2 PB VALVE INSTALLED Datum TV D= 8600'SS / ♦-. 2348' -9-5/8"FOCI 9-5/8"CSG,47#, H 2326' > ♦ O 2473' J 9-518"FOC 47#,S-95 XO • ♦ • TO L-80 j ♦� GAS LFT MANDRELS • •♦ ST MD TVD DEV TYPE VLV LATCH PORT DATE 13 3/8"CSG,72#,N 80,D=12.347" 2727' i• 134♦ - 5 3343 3338 10 KBG2 DONE BK 16 02/05/13 4'1 4 5089 4799 44 KBG2 DMY BK 0 02/05/13 j ♦j 3 6709 5967 45 KBG2 DOME BK 16 02/05/13 7"SCAB LM,26#,L-80 Tp, —{ 5539' . ♦A 2 8285 6802 59 KBG2 DMY BK 0 07/28/07 0383 bpf,ID=6.276" _ 1 9737 7542 59 KBG2 SO BK 20 02/05/13 5539' —9-5/8"X 7"BKR ZXP LTP w/11'BPR,D=6.20" T5/8"CSG,47#,L-80 BTC,D=8.835" --I 5702' 1 -- 5560'^H 9-5/8"X 7"BKR FLEX LOCK LNR HGR D=6.21" FALLOUT VI DOW(12-05A) 5702'-5719' Minimum ID= 2.377" @ 12598' 11779' --1-4-1/2-1-ES --1/21/2.14 "HES X D=3.813= 3-3116"X 2-7/8" X4 1 I r-__ z z-- 11841' H17"X 4-1/2"BKR BKR S-3 PKR,13=3.870" ' ,j 11865' —14-1/2"HES X NP,ID=3.813" 11872' H 3.70"DER.OY SLV w IGS MORE,ID=3.00" 11886' '—4-1/2"HES XN KW,D=3.80" j ' NFLLED(09/18/09) / ► 11892' }—7"X 5-1/4"BKR ZXP LTP w/11.76'FBR,D=4.35" 4-1/2"TBG,12.6#,13CR VAM TOP, H 11899' / ► 0152 bpf,D=3.958" '- ;�'� / 11899' 1--4-1/2"WDLEG, =3.958" i BEHIND 3-1/2"LNR,8.81#,L-80 STL, 11923' i ! 11914' }-7"X 5"BKR HNC LNR HG(;D=4.37" CT LNR .0087 bpf,13=2.992" 4 11920' H5"X 4-1/2"XO,ID=3.930"? • 7"LNR,26#,L-80 BTC-M —{ 12066' i 11923' —3-1/2"X 3-3/16"XO,D=2.786' .0383 bpf,13=6.276" , 4-1/2"STARBURST HOLLOW V *'STOCK 12106' ', FALLOUT WT.EOW(12-05ALI)12106'-12116' RA TAG --I 12108' � C 4-1/2"LNR,12.6#,L-80 IT--M H 14145' .0152 bpf,ID=3.958" ♦•♦♦♦412598' —3.3/16"X 2-718"XO,ID=2.377" PERFORATION SUMMARY i!♦!•! REF LOG:FMCNL ON 09/30/09 / 13100' —PERF'D A LUMNl1M BLLET ANGLE AT TOP PEEP:93°@ 13090' 33/16"LFR 6-2#. -i 12598' TO FtUGBACK-MAY BE Note:Refer to Production DB for historical pert data �• CM/MEWING TO FLOW SEE SPF NTETRVAL Opn/Sgz DATE L-80 TCA, 12-05AL1 .0076 bpf,13=2.786" 2" 6 13090-14210 0 09/30/09 12-05A FIND H 14228' ♦�4', 2-7/8" 6 13300-13610 0 07/28/07 - /,A, 2-7/8" 6 13730-13770 0 07/28/07 •� 2-7/8" 6 13770-14050 0 07/28/07 2-7/8"LNR,6.16#,L-80 STL,.0058 bpf,ID=2.441" —I 14246' DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY INT 11/25/79 PRK 176 ORIGINAL COMPLETION 12/17/10 MB/JMD ADDED SSSV SAFETY NOTE WB.i: 12-05A/12-05AL1 07/15/85 N1ES RWO 02/08/13 CJNJMD GLV CIO(02/05/13) PERMIT No: 2070530/209060 12/12/90 N2ES RWO 02/03/16 GRC/TLH PB VLV UPDATE F$2 STATE REG; AR No: 50-029-20391-01/-60 07/31/07 N7ES SIDETRACK(12-05A) SEC 18,T1ON,R15E,699'FSL&27'FEL 10/02/09 NORDIC 1 CTD LATERAL ST(12-05AL1) (10/08/09 SM'JND DRLG DRAFT CORRECTIONS BP Exploration(Alaska) • 8.,OF 714, • • • •\\\I%%y • THE STATE Alaska Oil and Gas fAoLASI�;A Conservation Commission tsr _ __ �,,._:— 333 West Seventh Avenue _.,... , *ti GOVERNOR BILL WALKER +4nshorage,,,Rlaska 99501-3572 OF Main:'907.279.1433 ALAS Fax: 907.276.7542 www.aogcc.alaska.gov Ryan Daniel Alaska Wells Integrity and Compliance Team Leader SCANNED LIAR U 32016 BP Exploration(Alaska), Inc. P.O. Box 196612 Anchorage, AK 99519-6612 Re: Prudhoe Bay Field, Prudhoe Bay Oil Pool, PBU 12-05A Permit to Drill Number: 207-053 Sundry Number: 316-085 Dear Mr. Daniel: Enclosed is the approved application for sundry approval relating to the above referenced well. Please note the conditions of approval set out in the enclosed form. As provided in AS 31.05.080, within 20 days after written notice of this decision, or such further time as the AOGCC grants for good cause shown, a person affected by it may file with the AOGCC an application for reconsideration. A request for reconsideration is considered timely if it is received by 4:30 PM on the 23rd day following the date of this letter, or the next working day if the 23rd day falls on a holiday or weekend. Sincerely, Cathy '. Foerster Chair a.JE DATED this 23 day of February, 2016. RBDMS 1,t- FEB 2 4 2016 STATE OF ALASKA • ALASKA OIL AND GAS CONSERVATION COM ION APPLICATION FOR SUNDRY APPROVALS 20 AAC 25.280 1. Type of Request: Abandon 0 Plug Perforations ❑ Fracture Stimulate 0 Repair Well ❑ Operations shutdown❑ Suspend ❑ Perforate ❑ Other Stimulate El Pull Tabing ❑ Change Approved Program ❑ Plug for Redrill El Perforate New Pool ❑ Re-enter Susp Well ❑ Alter Casing 0 Other 4-1/2"PB-Valve Desig Q • 2. Operator Name: BP Exploration(Alaska),Inc 4. Current Well Class: • 5. Permit to Drill Number: 207-053- 3. Address: P.O.Box 196612 Anchorage,AK Exploratory 0 Development Q 99519-6612 Stratigraphic LI Service ❑ 6. API Number: 50-029-20391-01-00 7. If perforating: 8. Well Name and Number: What Regulation or Conservation Order governs well spacing in this pool? Will planned perforations require a spacing exception? Yes ❑ No Q PBU 12-05A - I\f E D 9. Property Designation(Lease Number): 10. Field/Pools: LFR 0 4 2016 ADL 0028331 • PRUDHOE BAY,PRUDHOE OIL • '--�'f� 2/2•37/(‘r� 11. PRESENT WELL CONDITION SUMMARY4` Total Depth MD(ft): Total Depth TVD(ft): Effective Depth MD: Effective Depth TVD: MPSP(psi): Plugs(MD): J )� 14147 . 8756 • 14059 8754 Casing Length Size MD TVD Burst Collapse Structural Conductor 80 20"94#H-40 31 -111 30-110 1530 520 Surface 2695 13-3/8"72#L-80 28-2723 28-2721 4930 2670 Intermediate See Attachment See Attachment See Attachment See Attachment See Attachment See Attachment Production Liner See Attachment See Attachment See Attachment See Attachment See Attachment See Attachment Perforation Depth MD(ft): Perforation Depth TVD(ft): Tubing Size: Tubing Grade: Tubing MD(ft): See Attachment See Attachment 4-1/2"12.6#13Cr80 13Cr80 23-11899 Packers and SSSV Type: See Attachment Packers and SSSV MD(ft)and TVD(ft): See Attachment 4-1/2"HES PB Valve 2189, 2188.46 12.Attachments: Proposal Summary Q Wellbore Schematic Q 13.Well Class after proposed work: • Detailed Operations Program ❑ BOP Sketch ❑ Exploratory El Stratigraphic ❑ Development Q Service El 14.Estimated Date for Commencing Operations: 15. Well Status after proposed work: Oil Q - WINJ ❑ WDSPL ❑ Suspended ❑ 16.Verbal Approval: Date: GAS El WAG El GSTOR ❑ SPLUG ❑ Commission Representative: GINJ ❑ Op Shutdown ❑ Abandoned El 17.I hereby certify that the foregoing is true a .the procedure approved herein will not Contact Daniel,Ryan be deviated from without prior written appy vac Email Ryan.Daniel@bp.com Printed Name Daniel,Ryan / .- Title Alaska Wells Integrity&Compliance Team Leaderj Signature I - Phone +1 907 564 5430 Date i �0/` COMMISSION USE ONLY ✓'\ 4j/f Conditions of approval:Notify Commission so that a representative may witness Sundry Number: Plug Integrity ❑ BOP Test ElMechanical Integrity Test 1=1Location Clearance ❑ `Le Other: Post Initial Injection MIT Req'd? Yes❑ No ❑ Spacing Exception Required? Yes❑ No Igi Subsequent Form Required: \O—404 APPROVED BYTHE Approved by: 01647 p9tja....„...„4,....._ COMMISSIONER COMMISSION Date:_ —/ ORIGINAL RBDMS 1,1-FEB 2 5 2016 t•AM. 21%1 t'b Submit Form and Form 10-403 Revised 11/2015 Approved application is valid for 12 months from the date of approval. 111 /�j Attachments in Duplicate Zyi/(-C- - ,:1.,Gi /r . • w O 0 0 0 0 0 0 0 Lp NCo CO (0 0 0 Co r N- O N- cf Lc) LO O N LO L1) LC) N- N- C.) y 0 0 0 0 0 0 0 0 0 i CO CO C- N- LU I- V Cr) CO 7 L!) O N 00 — co N rt N- CO CO CO 1- CO CO N— CO CO N CO N CO N- r N N N N CO — (C) N- N— CO N (C) N LO N N Ln CO CO 00 H N- N O Vt c- CO Ln (O N N N N CO CO N N N — CO — O N N N LC) CO I. a co 1,- a0 M N CO Lo N N N O C 0' N-LN— M N N Lo N N LC) NI V. Q1 1 1 1 1 1 1 I 1 Q O co to Co N N (Y) Oco co N N N co LU N =N (NI N Lf) _ r O OO co O in O CX) O O ,) co (7) co O J co CO J (n J CO __ d = N J *k *k *k J (n O co 'cr 'cr CO •_ UO � N °Oao � NCV L[) tO L..o 0) Q) 0) r +� LO N N C)) 1— CO 0)O 0) N CDLC) r-- 00 00 CO Lf) r co LC) N J N LO N Ch CO N W W W f2C H F- I- 0)0 a)0 QQQQ cf- W0000 U t) CI: CtZ Z w W W W W W m O D H H H H Z Z D • d N • fC N It) �- t CO CO O N CO y up It) It) ▪ I- N- O a) CO I- o. 0 N- O L[) L N M CO O 4 N 0 CD 0 N- ti N- O 0 CO CO 0 I- w p a a w Z W cy a a g Y U ° o O NO W Y Y 0 J U U 0 0 0 J J J < < (n w CM CO U U < J w W C9 Z C9 O N r z z z 0 71, a _1 0 a _ _ = Z < p o 1- o U U 0 W Z ° Z W 0 < 2 2 2 O c) c) wCU in v) 0)) Q0 a 12 • N"' J= 000 O Q O CO N- O M MM p M CO CO W r r ia ; O cn _ 0 0 a J a 2 O co U U cn U a) a 0 U c o <a W W W a0_ a a 0 t d a N I- co I- r 0 Cl 0 0 0 a c 0 0 0 W J J Z o N N N Z 11 1 1 Q w W CO 0 w JJ D JJ J w a w LL N N N Z a 9 J ;9 0 w W W W o. Q 0 J ~ J J J a' a O m a i D i W W w < < 7o a 17 w I.L LL 'n U U) a cr d E z 10 In In O o o w a v) O w N CO a a a U -J CYOW m m Il LL cn m a • • Packers and SSV's Attachment ADL0028331 SW Name Type MD TVD Depscription 12-05A SSSV 2188.73 2188.7 4-1/2" HES PB Valve 12-05A PACKER 5549.92 5128.21 7" Baker ZXP Top Packer 12-05A TBG PACKER 11841.44 8598.98 4-1/2" Baker S-3 Perm Packer 12-05A PACKER 11903.27 8629.63 5" Baker ZXP Top Packer • • •6/6/01 WUWireline Work Request 1 2-055A global wells organization Distribution Wireline(4) Well: 12-05A AFE: APBWELIRSL Reading File Date: 8/5/2014 Engineer: Kenda IOR: 100 FTS: AWGRS Job Scope: SSSV Maintenance H2S Level: Problem Description This well requires a SSSV to re-installed after a failing NFT. Initial Problem Review PB SSSV would not close and failed state test. - Remedial Plan -WIRELINE ACTION Install Weatherford"PB"safety valve set to close at or below 300 psi flowing wellhead pressure "PB"Shop set close pressure @ 60 deg=547 psi Plan is to check PB in hole, if bad reset valve at same pressure. I valve is good set new PB SSSV to shop close at 547 PSI @ 60 degrees. Date Work Completed Well Status/Results Date by Problem Resolved ? Y N : Well Review(Post GLV or Choke Installation) Pre Installation Post Installation Liquid Rate (STBL/D) Expected NOB: Avg. WC (%) Actual NOB: Lift Gas (MMSCF/D) MGOR used for NOB: TGLR (SCF/STBL/D) FTP (psi)/Steady? MAINTENANCE ONLY CLP (psi)/Steady? (e.g. Fix AC, Shallower for Slugging) Casing Press. (psi)/Steady? RATE (Non-Post-WW) Orifice Depth: (e.g.deepen, optimize orifice) IA Fluid Level: Post-Wellwork Date of FL Survey: / / Follow-up Recommendations: • • "PB"Valve Calculation Sheet Well# 12-05 Date: 02/18/13 Test Data Test Date 02/11/13 Gross Fluid Rate 266 BLPD Flowing Well Head Pressure 316 psi Flowing Well Head Temperature 70 deg F GOR 10390 scf/bbl TGLR 13800 scf/bbl Flowing Pressure Calculations Based on Hagedorn-Brown Multiphase Flow Correlation "PB"Valve Setting Depth TVD 2189 ft Flowing Tubing Pressure With Gas Lift 316 psi Flowing Tubing Pressure Without Gas Lift NA psi Valve set to close at 300# Pwh Flowing Tubing Pressure @ 300# Pwh 565 psi Flowing Temperature at Valve Depth 76 Deg F PB"Valve Test Rack Set Pressure at 60 deg F 547 psi Valve Size 3" NOTE: Well needs to flow at> 350# Pwh Valve set to close at 300#Pwh NOTE: SSSV Would not close at 450@ 60 degrees. If valve in hole is good, set new valve at 547 psi close@60 deg. • • Tubing Pressure at Valve 565 BPT(psia) 579 >1238 <1238 Temperature(deg F) at Valves 76 a 2.944E-06 4.8864E-06 b 1.036768 1.030944 Base Pressure 562.104478 c -583.672 -579.43616 Base Temp(TV-60) 16 562.07551 560.5549345 Corrected Pressure 560.554935 psia TCF 0.96747486 Pb @ 60 = 546.623297 Test Rack Pressure = 547 TREE.-- CM/ • NOTES:WELL REQUIRES A SSSV r LSD -0 5A WELL ANGLE>70°@ 12128' ""ORlG W€1LBORE NOT WELOR BAKE C KB.ELEV= 73' A1_1 SHOWN BELOW 12-05A MILLOUT"'4-112"CHROME E_ETBG... BF.E3-B/= ___I KOP= 3300 20'OOND, 90' I • ♦; Max Angle= 96°(4 12279' 94#.H-40, ♦ I-1' 114.4• 2189' 4-1/2"HES X NP,D=3.813" Datum ND= 11984 =19.124' ♦� D2189' 4-112"PB VALVE NID INSTALLED Datum TVD= 8600'SS V ♦ ♦^ 2348' 9-5/8"FOC 9-5/8"CSG,47#, — 2326' • 47#,S-95 XO / i♦• � 2473' 9-5/8"FOC TO L-80 ♦' GAS LFT MANDRELS ♦ • �4 ST MD TVD DEV TYPE VLV LATCH PORT DATE ♦ ♦44 5 3343 3338 10 KBG2 DOME BK 16 02/05/13 13-3/8'CSG, 72#,N-80,D=12.347" H 2727' ♦ � 4 4 5089 4799 44 KBG2 DMY BK 0 02/05/13 0 4; 3 6709 5967 45 KBG2 DOME BK 16 02/05/13 7"SCAB LNR,26#,L-80 TCI, — 5539' • _1 2 8285 6802 59 KBG2 DMY BK 0 07/28/07 0383 bpf,D=6.276' i' 1 9737 7542 59 KBG2 SO BK 20 02/05/13 5539' —9-5/8"X 7"BKR ZXP LTP w/11'BPR D=6.20' 9-5/8"CSG,47#,L-80 BTC,D=8.835" —1 5702' 5560' 1--95/8"X 7"BKR FLEX LOCK LNR HGR ID=6.21" FALLOUT WNDOW(12-06A) 5702'-5719' Minimum ID = 2.377" @ 12598' I 11779' _ra-1rz•I ES x NP,D=3.813" 3-3/16" X 2-7/8" XO 2 X 11841' 7'X 4-1/2"BKR BKR S-3 R(R,D=3.870" I 11865' 1--41/2"1133 X NP,D=1813" 11872" I_3.70"DEFLOY SLV w/GS PROFILE,D=3.00" 11886' 1-4-1/2"I IG^i XN MP,D=3.80" i : MLLED(09/18/09) 1 4 I ► 11892' 7"X 5-1/4"BKR ZXP LTP w/11.76'FBR,D=4.35" 4-1/2'TBG, 12 6#, 13CR VAM TOP, — 11899' 1 ► Q ►♦ 11899' —4-1/2"WLEG,Co=3.958" .0152 bpf,D=3.958" i ►�i BEHIND • i 11914' H7"X 5"BKR HMC LNR HGR2,D=4,37" CT LNR 3-1/2'LW,8.81#,L-80 STL, H 11923' '4 ♦ .0087 bpf,D=2.992" j : 11920' —5"X 41/2"XO,D=3,930"? 7"I.AR 26#,L-80 BTC-M, —1 12066' 11923' —31/2"X 33/16"XO,D=2,786" .0383 bpf,D=6.276" • 4-1/2"STA RBLF T HOLLOW WFIFSTCX7( 1— 12106' A,LLOUT WrDOW(12-05AL1) 12106'- 12116' RA TAG — 12108' 0 C 4-1/2"LNR, 12.6#,L-80 BT-M — 14145' .0152 bpf, D=3.958" ♦0. ♦♦ •♦♦♦♦♦ � - 12598' —33/16"X 2-7/8"XO,D=2.377" PRt'FORAT ON SUMMARY RFT LOG MCNL ON 09/30/09 / 13100' —FE1 D ALUMNUN BLLET TO FLUGBACK- BE ANGLE AT TOP FEW 93"@ 13090 33/16"LNR 6.2#, — 12598' MAY Note:Refer to Roduction DB for hstorical perf data A. CONTRIBUTING TO FLOW WE SPF ' NTH2VAL Opn/Sgz DATE L-80 TCI,., 12-05AL1 .0076 bpf,D=2.786' 2" 6 13090- 14210 0 09/30/09 12-OSAFBTD — 14228' 4* 2-78" 6 13300- 13610 0 07/28/07 4A, AIN 2-7/8' 6 13730- 13770 0 07/28/07 4 2-7/8" 6 13770- 14050 0 07/28/07 2-7/8"LNR 6.16#,L-80 STL,.0058 bpf,ID=2.441" -- 14246' DATE REV BY COM ENTS DATE REV BY COMFA NTS PRID-OE BAY LNT 11/25/79 PRI(176 ORIGINAL COMPLETION 12/17/10 MB/JM) ADDED SSSV SAFETY NOTE WELL: 12-05A/12-05AL1 07/15/85 N1ES RWO 02/08/13 CJNJM) GLV CIO(02/05/13) FET21ViT No: 2070530/209060 12/12/90 N2ES RWO 02/03/16 GRCITLH PB VLV UPDATE PER STATE REG. AR No: 50-029-20391-01/-60 07/31/07 N7ES SIDETRACK(12-05A) SEC 18,T10N,R15E 699'FSL 8 2T FEL 10/02/09 NORDIC 1 CTD LATERAL ST(12-05AL1) (10/08/09 SANJMD DRLG DRAFT CORRECTIONS BP Exploration(Alaska) ~ ~ ~~~' ~ ~~~~~~~ ~~~ ~~~~~~~ ~~~!~ '~~~~~~ ~ ~' ~ ~u~~~~~ T~is page identifies ~~ose iter~s tna~ ~ver~ ~o~ s~a~~ed ~~~a~~ ~~e i~i~ia~ ~~~d¢~c~io~ ~~a~r~i~g p~a~e. They are available ira the original fiile, may be ~car~ned during ~ special rescar~ ~ctivgfiy or as-e ~rie~va~le ~y direct inspectio~ of the file. ~~ ~- ~~.~ ell Fiis#ory ~a9e ~~en~¢f~er . ~l ?I7lZld7 (done) ^ Two-sided I~~ ~~I~II ~I II~ ~I I~I 9 9- 12E A-N DIGI AL DATA Color Items: Diskettes, No. ~ ~ reyscale Items: ~~C{,~-~' ^ Other, No/Type: v ^ Poor Quality Originals: ^ Other: NOTES: BY: Maria Project Proofing eY: Maria Scanning Preparation BY: Maria Date: O I~ I' o /s/ .at~: ~ / 31 / D (IIII'I~IIIII) II~II /s/ ~ ~ ~_ x 30 = ~ + ~ ~ = TOTAL PAGES t ~~ ~'~ ~ Q~ (Count does not inGude cover sheet) ~~ Date: ~S~ Production Scanning Stage 1 Page Count from Scanned File: (count does ~nciude cover sheet) Page Count Matches Number in Scanning Preparation: ~YES NO BY: Maria Date: ~' ~j ~~ V a Isl ~~ ~ Stage 1 If NO in stage 1, page(s) discrepancies were found: YES NO BY: Maria Date: SIII IIi11111111 11111 Scanning is complete at this point unless rescanning is required. ReScanned II I I) ~I II I I I II I I III BY: Maria Date: ~S~ Comments about this file: Quality Checked II I II'I II ~II II'~ III ~ ^ Rescan IVeeded ~I~ II'lII I~ I I II~ II~ OVERSIZED (Scannable) ^ Maps: ^ Other Items Scannable by a Large Scanner OVERSIZED (Non-Scannable) ^ Logs of various kinds: ^ Other:: 10/6/2005 Well History File Cover Page.doc ~. , ~" t~ ;. ~~ a.k ~ .ryc. _„ sxi. - .,_ ~ ~ ~~d _ Tfi: ..; ... . ~ '~., ~ J ~~ ~ ~ ~;' .,~: MICROFILMED 6/30/2010 DO NOT PLACE ANY NEW MATERIAL UNDER THISPAGE C:\temp\Temporary Internet Files\OLK9\Microfilm_Marker.doc ~chl~be Alaska Data & Consulting Services 2525 Gambell Street, Suae 400 Anchorage, AK 99503-2938 ATTN: Bath Well Job # 02/24/10 NO.5478 Company: State of Alaska Alaska Oil & Gas Cons Comm Attn: Christine Mahnken 333 West 7th Ave, Suite 100 Anchorage, AK 99501 log Description Date Bl Color CD 05.O1C AYKP-00062 RST 01/17/10 1 1 OS-38 AYKP-00063 RST 01/22/10 1 1 12-05A 11868097 MCNI 06/02/08 1 1 05-28B BBSK-00002 RST - 01/20/10 1 1 YICAJC A(:RNV WICVIat MCI:CIYI tl7 ,IUNINIi ANU NC I UNNINU UNt I:UY~ tAI:N 1 U: BP Exploration (Alaska) Inc. Petrotechnical Data Center LR2-1 900 E. Benson Blvd. ;, ~ ~: l~f'~r~. ' G ~~ ~;-, -; . Alaska Data & Consulting Services s • b Uhlumberpr N0.5180 Alaska Data & Consulting Services fl ; . '° jl ` ?, NO'S Company: State of Alaska 2525 Gambell Street, Suite 400 { d u t�::..'J'1a� �,:.w) '"' Alaska Oil &Gas Cons Comm Anchorage, AK 99503 -2836 Attn: Christine Mahnken ATTN: Beth 333 West 7th Ave, Suite 100 Anchorage, AK 99501 Well Job 8 Log Description Date BL Color CD OWDW -SW 83SQ -00032 RSTIWFL 11/07109 1 1 L -223 8581 -00014 USIT 10121/09 1 1 5 -218 B5JN -00018 USIT 10/21/09 1 1 L -222 B3SO.00031 USIT 11/07/09 1 1 1.2 -24 8148 -00079 RST 10/31/09 1 1 1-2 -32 814B -00078 RST 10/30/09 1 1 L1 -14 AVIN -00029 RST 10127/09 1 1 1.2 -18A 0148 -00077 RST 10/30109 1 1 D-260 AXED -00053 MCNL — 10/02/09 1 1 S -228 BSK5 -00008 RST 1 10/27/09 1 1 D -24 AWLS -00038 RST 09/27/09 1 1 18 -15B AYS4 -00107 RST I 10/31/09 1 1 04 -21 ANHY -00115 RST 10/27/09 1 1 1.2-07A AYOO -00047 RST 10/29/09 1 1 OWDW -SW 83SQ -00032 RST 11/07109 1 12- OSAP81 40015441 OH MWDJLWD EDIT 07/01/07 2 1 06 -218 OBAKA0016 OH MWD/LWD EDIT 07/28108 2 1 0-16A 09AKAOI75 OH MW /LWD EDIT 09/07/09 2 1 L -223 09AKAOOSI OH MWD/LWD EDIT 10/10/09 2 1 L -223 B581 -00014 CH EDIT PDC USIT 10/21/09 1 S -218 85J -00018 CH EDIT PDC (USIT) 10/21109 1 L - 222 83SQ - 00031 CH EDiT PDC (USIT) 11107/09 1 04 -33A 09AKA0075 OH MWD /LWD EDIT 09/19/09 2 1 PLEASE ACKNOWLEDGE RECEIPT BY SIGNING AND RETURNING ONE COPY EACH TO: BP Exploration (Alaska) Inc. Alaska Data & Consulting Services Petrotechnical Data Center LR2 -1 2525 Gambell Street, Suite 400 900 E. Benson Blvd. Anchorage, AK 99503.2838 Schiumberger NO. Alaska Data Consulting Services Cor 2525 Gambol! Street, Suite 400d.'yf 2d Anchorage, AK 99503 -2838 ATTN: Beth Well Job Log Description Date BL H -26 BOCV -00028 PRODUCTION LOG /fig /15c) 10/06/09 1 12 -31 B145-00076 'INJECTION PROFILE t no I i1 ry) 3 10/12/09 1 P2 -21 BOCV -00029 PRODUCTION LOG 19,./_(),s J 10/07/09 1 12 -35 B2NJ -00029 MEM PROD PROFILE e )(57— 66 P___03 10/04/09 1 12 -30 B3SA -00030 INJECTION PROFILE O i,(+, /UQ 9t c 10/11 /09 1 K -19AL1 B69K -00028 LDL an`3 --19 0 /S 10/18/09 1 C -19B B5JN -00016 SCMT hp -6(ti 6 67- 10/11/09 V -105 AYS4 -00100 INJECTION PROFILE (J I oO a (3 I t (-5 10/05/09 1 OWDW -SE B69K -00021 RST /0 P?9 r e/ 09/23/09 1 OWDW -NW B69K -00022 RST /(x) 6 6 3 09/24/09 1 OWDW -SW B69K -00023 RST /154 ,S 73 4.c7 09/25/09 1 04 26 B5JN -00014 RST ,'":/<i t 6 09/26/09 1 12 -05A 40015441 OH M D/L D *--‘3 f 07/26/07 2 M-19B 09AKA0028 OH MWD/LWD EDIT 0a'1-- /'5 `jy (a 6 01/29/09 2 PLEASE ACKNOWLEDGE RECEIPT BY SIGNING AND RETURNING ONE COPY EACH TO: 111 BP Exploration (Alaska) Inc. A Petrotechnical Data Center LR2 -1 y Qc 1 M� d �u G 2 900 E. Benson Blvd. A I ~ I ~~~-~-- DATA SUBMITTAL COMPLIANCE REPORT 7/6I2009 Permit to Drill 2070530 Well Name/No. PRUDHOE BAY UNIT 12-05A Operator BP EXPLORATION (ALASKI~ INC MD 14147 7VD 8756 Completion Date 7/31/2007 Completion Status 1-OIL Current Status 1-OIL REQUIRED INFORMATION Mud Log No Samples No API No. 50-029-20391-01-00 UIC N Directional DATA INFORMATI~N Types Electric or Other Logs Run: MWD DIR / GR / RES / PWD, MWD DIR / GR / RES / AZI-DENS / PW Well Log Information: Logl Electr Data Digital Dataset Log Log Run (data taken from Logs Portion of Master Well Data Maint Intervai OH / iy e meairrmt ryumoer Name aca~e mea~a no ~tart stop ~n rcecervea ~ommenrs D D Asc Directional Survey 0 14147 Open 8/9/2007 pt Directional Survey 0 14147 Open 8/9/2007 D D Asc Directional Survey 0 12052 Open 8/9/2007 PB 1 Directional Survey 0 12052 Open 8/9/2007 PB 1 ED C Las 15546ti(nduction/Resistivity 5658 14146 Open 10/12/2007 DRHB, RPM, GR, NPHI, ROP, RPD, RPS, w/EMF graphics Field Data r'ED C Las 15547 "Induction/Resistivity 6100 12052 Open 10/12/2007 PB1 RPM, GR, ROP, w/EMF graphics Field Data Log Production 5 Blu 11775 14062 Case 6/11/2008 mem PPL, Gr, CCL, Temp, Pres, Spin 1-Jun-2008 D C Pds 16446 `~duction 5 11775 14062 Case 6/11/2008 Mem PPL, Gr, CCL, Temp, Pres, Spin 1-Jun-2008 Well Cores/Samples Information: Sample Interval Set Name Start Stop Sent Received Number Comments ~ ~ DATA SUBMITTAL COMPLIANCE REPORT 7/6/2009 Permit to Drill 2070530 Well Name/No. PRUDHOE BAY UNIT 12-05A Operator BP EXPLORATION (ALASF(~ INC MD 14147 TVD 8756 Completion Date 7/31/2007 Completion Status 1-Oit Current Status 1-OIL ADDITIONAL INFORMATION Well Cored? Y~ Daily History Received? ~N Chips Received? tf~#~ Formation Tops Q~ N Analysis `rf'Rh Received? API No. 50-029-20391-01-00 UIC N ~ Comments: Date: Compliance Reviewed By: ~ ~ 06/11(OS ~ ~\ ~ ~~~~~~~~~~~ Alaska Data & Consulting Services 2525 Gambell Streei, Suite 400 Anchorage,AK 99503-2838 ATTN: Beth wau .i.,h ~e NO. 4745 Company: State of Alaska Alaska Oil & Gas Cons Comm Attn: Christine Mahnken 333 West 7th Ave, Suite 100 Anchorage, AK 99501 i.,.. nee~.~.,r~.,., n~re Q~ r..i.,, rn P2-13 11978463 STATIC PRESS & TEMP (.f 06/03/08 1 1 12-05A 11963097 MEM PROD PROFILE O6/01/OS 1 1 P2-06 12014018 PRESS & TEMP LOG - 06/03/08 1 1 N-14A 12017297 LDL -~t ~ 06/10/OS 1 1 K-12A 11966245 SCMT a O6/06/08 1 1 06-15 11966256 USIT ( j 06l07/08 1 1 A-13 12031481 USIT /~j /- (, 06/06/08 1 1 P2-45B 40016680 OH MWD/LWD EDIT '~ - (~( ~ 03/13/08 2 1 rLCAJC fi(i1~IVVVVLCUl7C IYG(iCIYI CT ,IlaN11V(i NIVU Fitl UFIIVIIVIa UIVt GVYY tAl:Fl 1 V: BP Exploration (Alaska) Inc. Petrotechnical Data Center LR2-1 900 E. Benson Blvd. Anchorage, Alaska 99508 ' ', ~ Date Delivered: ~a _ .'-,i i~'., - - ; Alaska Data & Consulting Services 2525 Gambell Street, Sui e 400 Ancho~age,AK 99503- 38 ATTN: Beth Received by: ~ Date 10-12-2007 Transmittal Number:92907 BPXA WELL DATA TRANSMITTAL Enclosed are the materials listed below. (SPXA FIELD LOG DATA) have anv auestions, please contact llou~las llortch at the YllC: at 564-4y /S Delivery Contents 1 CD-ROM Containing Field Log Data & Electronic Log Prints for the following wells: 01-01 C ~p~'--~'r? -~-~~'3~I__ - _ . __ 01-08A v ~C. ~Ca~_1R~T 15~3g----- 01-08APB1 UaC ~~tq~- ~~.c~~ ---_ __. -- 03-14A ~v(o Oa~ 1~S~(( _ 03-36A µA5 7~l ~ f~~ ~- ---- - ~- ~ , 05-36A abS -b~.n~`~t 05-36AP61 ao5 -6~ L$~. ~ 06-13A - ~ ~`"'~.~ I06-13APB1 ~o ~ -[~~ L_S~~y,~^---~- -~~_~.~ 12-05A ~~ - ~ it t ~/~ .~__ 12-05APB1_ ~0~-~63 _"_t~~S/~___..4_.~.._.._. G22A ,.c2CS~.o_"Q~ ~1~SL'/.~1.`t(~.__.v~.~_._...___. E-15C ;~„~~~~ t1~5Y9 G1C G-26~~~,.~t~~~ C~~~6 -- . . ._. K-02D ~.b(o L~S~.__" 15.5~/_._~.__..._ --_ K-02DPB1 _2.QSo...-Q~C~:.i`/S~Sa.~_.__._.. IW -213 . - ~-~ a - o I _'~ __r5_~.~_--- -- ; Please Sign and Return one copy of this transmittal. Thank You, Douglas Dortch Petrotechnical Data Center Attn: State of Alaska - AOGCC Attn: Christine Mahnken 333 W. 7th Ave, Suite 100 Anchorage, Alaska 99501 Petrotechnical Data Center LR2-1 900 E. Benson Blvd. PO Box 196612 Anchorage, AK 99519-66 L2 , a STATE OF ALASKA 1~/~ ALASKA~{L AND GAS CONSERVATION COM~SION ~~~~~~r~LJ A(JG 2 WELL COMPLETION OR RECOMPLETION REPORT AND LC~~ ~ ZOQ7 a~k~ ~~1 ~ n ~-'~s Cone r„__ 1a. Well Status: ~ Oil ^ Gas ^ Plugged ^ Abandoned ^ Suspended 1b. Well Class: nChO~j St0 zoaACZS.~os 2oa,a,c2s.~,o ~ Development Lf'~xploratory ^ GINJ ^ WINJ ^ WDSPL ^ WAG ^ Other No. of Completions One ^ Service ^ Stratigraphic 2. Operator Name: 5. Date Comp., Susp., or Aba 12. Permit to Drill Number BP Exploration (Alaska) Inc. 7/31/2007 207-053 3. Address: 6. Date Spudded ' 13. API Number P.O. Box 196612, Anchorage, Alaska 99519-6612 6/27/2007 ~ 50-029-20391-01-00 ~ 4a. Location of Well (Governmental Section): 7. Date T.D. Reached 14. Well Name and Number: Surface: ' ' 7/25/2007 ~ PBU 12-05A ' 699 FSL, 28 FEL, SEC. 18, T10N, R15E, UM . Top of Productive Horizon: 8• KB (ft above MSL): 70.46' 15. Field / Pool(s): . 4024' FSL, 585' FWL, SEC. 16, T10N, R15E, UM ~ Ground (ft MSL): Prudhoe Bay Field / Prudhoe Bay Total Depth: 9. Plug Back Depth (MD+ND) Pool 2981' FSL, 2105' FWL, SEC. 16, T10N, R15E, UM ` 14059 8754 4b. Location of Well (State Base Plane Coordinates, NAD 27): 10. Total Depth (MD+~/D) 16. Property Designation: Surface: x- 697575 y- 5931030 Zone- ASP4 14147 8756 ADL 028331 - TPI: x- 703367 y- 5934510 Zone- ASP4 11. SSSV Depth (MD+~/D) 17. Land Use Permit: Total Depth: x- 704918 y- 5933509 Zone- ASP4 None 18. Directional Survey ~ Yes ^ No 19. Water depth, if offshore 20. Thickness of Permafrost (TVD): ' Submit electronic and rinted information er 20 AAC 25.050 N/A ft MSL 1900 (Approx. 21. Logs Obtained (List all logs here and submit electronic and printed information per 20 AAC 25.071): i/~M ~d, ' y9B MWD DIR / GR / RES / PWD, MWD DIR / GR / RES / AZI-DENS / PWD / StrataSteer, USIT / GR / CCL .$ 22. CASING, LINER AND CEMENTING RECORD ' CASING 'SETTING DEPTH MD' SETTING DEPTH NQ HOLE ~OUNT r' WT. PER FT. GRADE `TOP ' BOTfOM ' TOR BOTTOM SIZE CEMEN7ING ~ECOR~ . "' PULtED " 20" 94# H-40 Surface 80' Surface 80' 30" 400 sx Arcticset II 13-3/8" 72# N-80 Surface 2727' Surface 2725' 17-1/2" 4800 sx Permafrost II 9-5/8" 47# S-95 / L-80 Surface 5702' Surface 5238' 12-1/4" 1650 sx Class'G' 7" 26# L-80 Surface 12065' SurFace 8711' 8-1/2" 638 sx'G' 96 sx'G' 784 sx'G' 4-1/2" 12.6# L-80 11892' 14145' 8624' 8756' 6-1/8" 283 sx Class'G' 23. Open to production or inject ion? ~ Yes ^ No 24. TusiM~ RecoRo If Yes, list each i (MD+TVD of Top & Bottom; Pe nterval open rforation Size and Number): Size ~EPTH SET MD PACKER SET MD 2-7/8" Gun Diameter, 6 spf 4-1/2", 12.6#, 13Cr80 11899' 11841' MD ND MD TVD 13300' - 13610' 8739' - 8752' 25 ACi GEMEN7" SQUEEZE ~RACTURE e7C, . ~ 13730' - 13770' 8754' - 8753' . , , , 13770' - 14050' 8753' - 8754~ ~EPTH ~NTERVAL MD AMOUNT & KIND OF MATERIAL USED 5724' Set EZSV for PB1 Kick Off 5724' Pump 20 Bbls Class'G' Cement below EZSV 5719' Set Kick Whipstock 2200' Freeze Protect w/ 75 Bbls Diesel 26. PRODUCTION TEST Date First Production: Method of Operation (Flowing, Gas Lift, etc.): August 26, 2007 Gas ~ift Date of Test: Hours Tested: PROOUCT~or, FoR OIL-BBL: GAS-MCF: WATER-BBL: CHOKE SIZE: GAS-OIL RATIO: 8/27/2007 6 TEST PERIOD 108 72 130 70 660 Flow Tubing Casing Press: Cn~cu~nre~ OIL-BBL: GAS-MCF: WATER-BBL: OIL GRAVITY-API ~CORR~: Press. 280 10 24-HOUR RATE• 432 286 519 Z7. CORE DATA Conventional Core(s) Acquired? ^ Yes ~ No Sidewal l Core s Ac uired? ^ Yes ~ No If Yes to either question, list formations and intervals cored (MD+TVD of top and bottom of each), and summarize lithology and presence of oil, gas or water (submit separate sheets with this form, if needed). Submit detailed descriptions, core chips, photographs and laboratory analytical results per 20 AAC 250.071. COI~9?~.ET?ON None ~~S ~~~ SEP ~ $ Z007 . }ED Form 10-407 Revised 02/2007 ~~ ~~ CONTINUED ON REVERSE SIDE ~,.~_ ~~ ~i Q'/~j~~ i• ~~AI ~ ~ `'l i=' F'~ t~ ! ZS. GEOLOGIC MARKERS ~LIST ALL FORMATIONS AN KERS ENCOUNTERED~: Z9. FORMATION TESTS ^ NAME ND Well Teste . ^ Yes ~ No Permafrost Top If yes, list intervals and formations tested, briefly summarizing test results. Attach separate sheets to this form, if needed, and submit Permafrost Base detailed test information pes 20 AAC 25.071. Colville Mudstone (CM3) 8062' 6687' None Colville Mudstone (CM2) 9067' 7201' Colville Mudstone (CM1) 10614' 7984' Top HRZ 11260' 8311' Base HRZ 11656' 8508' Kingak 11882' 8619' Sag River 12067' 8712' Shublik 12136' 8737' Base of Sag River (Inverted) 12280' 8732' Formation at Total Depth (Name): Base of Sag River 12280' 8732' 30. List of Attachments: Summary of Daily Drilling Reports, Well Schematic Diagram, Surveys 31. I hereby certify that the fore ing is true and correct to the best of my knowledge. ~ Signed Terrie Hubble Title Technical Assistant Date O /~~~ ~ PBU 12-05A 207-053 Prepared ByName/Number. TetTie Hubble, 564-4628 Well Number Drilling Engineer: ~~m Nigh, 564-5220 Permit No. / A roval No. (NSTRUCTIONS GeNew-~: 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. Irenn 1a: Classification of Service Wells: Gas Injection, Water Injection, Water-Alternating-Gas Injection, Salt Water Disposal, Water Supply for Injection, Observation, or Other. Multiple completion is defined as a well producing from more than one pool with production from each pool completely segregated. Each segregated pool is a completion. ITeM 4b: TPI (Top of Producing Interval). IreM 8: The Kelly Bushing and Ground Level elevation in feet above mean sea level. Use same as refe~ence for depth measurements given in other spaces on this form and in any attachments. IreM 13: The API number reported to AOGCC must be 14 digits (ex: 50-029-20123-00-00). IreM 20: Report true vertical thickness of permafrost in Box 20. Provide MD and TVD for the top and base of permafrost in Box 28. ITeM 22: Attached supplemental reco~ds for this well should show the details of any multiple stage cementing and the location of the cementing tool. IreM 23: 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 onfy 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 26: Method of Operation: Flowing, Gas Lift, Rod Pump, Hydraulic Pump, Submersible, Water Injection, Gas Injection, Shut-In, or Other (explain). Irea- 27: 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. Irenn 29: Provide a listing of intervals tested and the corresponding formation, and a brief summary in this box. Submit detailed test and analytical laboratory information required by 20 AAC 25.071. Form 10-407 Revised 02/2007 Submit Original Only Legal Name: 12-05 Common Name: 12-05 Tes# Date Test Type ', Test Depth (TM 6/26/2007 FIT 61,160.0 (ft) 7/7/2007 FIT 5,702.0 (ft) 7/21/2007 FIT 12,066.0 (ft) BP EXPLORATt:ON Page 1 of 1 Leak~Off Test Summary ' Test Qepth (TUp) ~. AMW Surface Pressure Leak Off Pressure (BHP) EMW 5,512.0 (ft) 9.30 (ppg) 975 (psi) ~ 3,638 (psi) 12.71 (ppg) 5,238.0 (ft) ~ 9.30 (ppg) 700 (psi) II 3,231 (psi) 11.87 (ppg) 8,713.0 (ft) '; 8.45 (ppg) 703 (psi) I 4,528 (psi) 10.00 (ppg) ~ ~ Printed: S/14/2007 4:28:~ ~ ~ BP EXPLORATION' Qperativns Summary Rep~rt Legal Well IVame: 12-05 Common Well Name: 12-05 Spud Date: 10/30/1979 Event Name: REENTER+COMPLETE Start: 6/20/2007 End: 7/3/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 7/31/2007 Rig Name: NABORS 7ES Rig Number: Date -~From - To Hours Task Code NPT Phase ; Deseription Qf Uperafic~ns 6/20/2007 ', 15:00 - 00:00 9.00 CONS N 6/21 /2007 00:00 - 15:00 i 15.00 I CONS I N 15:00 - 19:30 I 4.501 CONS I N , I 19:30 - 00:00 4.50 CONS N 6/22/2007 I 00:00 - 01:00 1.00 MOB N ! 01:00 - 01:30 ' 01:30 - 05:00 I05:00 - 10:00 0.50 MOB P 3.50 RIGU P 5.00 RIGU P 10:00 - 11:00 I 1.001 RIGU I P 'I 11:00 - 12:00 i 12:00 - 13:00 1.00 WHSUR P 1.00 WHSUR P 13:00 - 14:30 I 1.501 WHSUR I P 14:30 - 18:30 I 4.001 KILL I P I 18:30 - 19:00 0.50 KILL P I 19:00 - 20;15 1.25 BOPSU P I 20:15 - 21;00 OJ5 BOPSU P i 21:00 - 22:30 1.50 BOPSU P ' 22:30 - 00:00 1.50 BOPSU P 6/23/2007 I 00:00 - 01:00 1.00 BOPSU P 01:00 - 05:30 4.50 BOPSU P 05:30 - 06:30 1.00 FISH P 06:30 - 07:30 1.00 FISH P 07:30 - 08:30 1.00 FISH P 08:30 - 10:00 1.50 FISH P 10:00 - 12:00 I 2.001 FISH I P 12:00 - 13:00 I 1.001 FISH I P 13:00 - 17:30 I 4.501 FISH I P 17:30 - 23:00 I 5.501 FISH I P 23:00 - 00:00 1.00 FISH P 6/24/2007 00:00 - 01:00 1.00 FISH P 01:00 - 02:00 1.00 EVAL P 02:00 - 06:00 4.00 EVAL P 1--- --- WAIT PRE ~ Stand by...Waiting on well & pad preparation. Service Rig. Change out Hi-Clutch, Saver sub on Top Drive to 4 1/2" IF. Inspect Baylor brake on Draw works. Service blocks and Top Drive. General Rig house keeping. WAIT ~ PRE Wait on well and pad level prep. Move camp and shop. Slip & I cut drilling line. ~ C/O oil in Top Drive. General Rig maintenance. WAIT PRE Move satellite camp, shop and pits to well # 5 side of location. Spot camp and shop. WAIT PRE Continue to level pad. Move Sub base to well # 5 side of pad. WAIT DECOMP Level pad and place initial footprint Rig mats. Accept Rig @ 00:01 hrs. ~ DECOMP Move Rig Sub base over well # 5. ' DECOMP Raise Rig Sub base up with rig mats (6 mats high). DECOMP Move in pits and raise and level with rig mats (5 mats high + 1 row of 3" x 12"s). Take on Brine. R/U ~ittle Red services to MIT - OA DECOMP Spot cuttings tank and berm same. Build stairs to access rig due to Rig height. DECOMP R/U DSM pull BPV with lubricator DECOMP ~ Pump 20 bbls of 9.6 ppg NaCI down IA w/ returns up the Tbg to j ensure well not frozen. ~ Shut down swap lines over to OA. DECOMP ~ Little Red Svs - MIT - OA t/ 2000 psi w/ 3.9 bbls diesel - PASS. R/D LRS. DECOMP Displace well w/ 90 bbls surfactant pill (from 9-ES), 50 bbls of Safe Surf-O, 470 bbls of 9.6 ppg NaCI (210 gpm / 260 psi). DECOMP R/D & Blow down lines. DECOMP R/U DSM. Lubricate in TWG.R/D DSM. DECOMP R/U & test TWC f/ below to 1000 psi - PASS. DECOMP N/D Tree and Adaptor flange. DECOMP N/U BOPE. DECOMP R/U to test BOPE. DECOMP Test BOPE. AOGCC witness Bob Noble on location. Test 250 psi Lo / 3500 psi High.Used 5" & 5 1/2" test jts. DECOMP R/D test equipment. R/D & blow down lines. DECOMP Pull TWC w/ lubricator. DECOMP R/U & pull Tbg hanger to floor w/ 145K to unseat. UD same. DECOMP CBU, 277 bbls @ 400 gpm / 120 psi. R/U Tbg pulling equipment while CBU. DECOMP Pull Tbg to 6,254' md. Well out of balance and flowing up DP. Stab in TIW valve. DECOMP Circulate to balance fluid column. Pump 340 bbls @ 350 gpm / 140 psi. Pump dry job. DECOMP POH UD 5 1/2" 17# L-80 Tbg. At the BAL-O SSSV Recovered 51 of 56 stainless steel bands. R/D control line spooler. DECOMP Continue to UD 5 1/2" Tbg. Total Tbg laid down 137 Jts, 1 cut jt, 3 GLMs and 2 pups. (cut jt length= 26.9') DECOMP R/D Tbg pulling equipment. Clean and clear Rig floor. DECOMP Continue to clean and clear Rig floor. Attempt to run wear ring. Running tool would not work (wear ring egged). DECOMP PJSM w/ WSL, TP, SLB, & Rig crew. Spot truck and rig up. " , DECOMP I RIH w/ 8.5 gauge bring & junk basket to top of Tbg. Tagged Printed: S/14/2007 4:28:49 PM ~ ~ E3fl EXPLORATIQN' Page ~ af 2~ : Operations Sumrnary Report Legal Well Name: 12-05 Common Well Name: 12-05 Spud Date: 10/30/1979 Event Name: REENTER+COMPLETE Start: 6/20/2007 End: 7/3/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 7/31/2007 Rig Name: NABORS 7ES Rig Number: ' Qate- From - To Mours Task Code NPT Phase Description af Operations -- --- 6/24/2007 -- 02:00 - 06:00 ~' 4.00 EVAL P DECOMP ------ 300' high @ 5,998' md. POH wireline pulled tight @ 5,324' md. Work wireline. Free and POH. Junk basket empty. I 06:00 - 09:00 3.00 EVAL P DECOMP R/U smaller gauge ring (8.30") & junk basket. RIH, tag up Q i 6,291' md. POH w/ gauge ring & junk basket. Recovered small strips (debris) of pfastic Tbe coating. ~ 09:00 - 12:00 3.00 EVAL P DECOMP M/U 8.5" gauge ring & junk basket, RIH, tagged @ 6,291'. ! ~ POH. Recovered small strips (debris) of plastic Tbe coating. ~ 12:00 - 13:00 1.00 EVAL P DECOMP PJSM w/ SLB M/U USIT/CBL. ~ 13:00 - 15:00 2.00 EVAL N DFAL DECOMP RIH 20'. Tool failure @ surface. Rehead tool head. i 15:00 - 19:00 4.00 EVAL P DECOMP RIH w/ USIT/CBL. POH & Log with same ( retrieve 1 more SS ~ band for a total of 52 of 56 bands recovered). I 19:00 - 20:30 1.50 EVAL P DECOMP Read Logs, R/D USIT/CBL. ~ 20:30 - 23:00 2.50 DHB P DECOMP M/U EZSV and R~H on E-line. Set EZSV with Top Q 6,095' md. 23:00 - 00:00 ~ 1.00 DHB P DECOMP POH w/ setting tool. 6/25/2007 00:00 - 01:00 i 1.00 DHB P DECOMP Continue to POH w/ E-line & EZSV running tool. R/D E-Line. 01:00 - 02:00 ( 1.00 DHB P DECOMP R/U & test 9 5/8" casing to 3500 psi f/ 30 min. - PASS. R/D test equipment. 02:00 - 03:30 1.50 DHB P DECOMP P/U (9)- 6 1/4" DCs & 15 jts of 5" HWDP. 03:30 - 04:30 I 1.00 DHB P DECOMP M/U RTTS. RIH w/ RTTS with DCs & HWDP hung below RTTS, set RTTS @ 35' md. POH w/ running tool. R/U & test RTTS to 1000 psi for 5 min. 04:30 - 06:30 2.00 WHSUR P DECOMP Blow down lines drain stack. Nipple down BOPs & Tbg spool. 06:30 - 09:30 3.00 WHSUR P DECOMP Change out 9 5/8" packoff. Built push plate to set the weight of the BOPs on top of the packoff to be able to RILDS. - RILDS. 09:30 - 13:00 3.50 WHSUR P DECOMP Install new Tbg spool and nipple up BOPs. Install new flange bolts on 9 5/8" spool. Test 9 5/8" pack off to 3800 psi for 30 minutes - PASS. 13:00 - 14:00 1.00 BOPSU P DECOMP R/U & test lower pipe Rams250 psi Lo / 3500 psi high - PASS. R/D test equipment. 14:00 - 14:30 0.50 BOPSU P DECOMP Pull 9 5/8" RTTS from hole. 14:30 - 15:30 1.00 BOPSU P DECOMP POH, stand back 5 stands ot 5" HWDP & 3 stands of 6 1/4" drill collars. 15:30 - 17:30 2.00 BOPSU P DECOMP R/U & test 9 5/8" casing U 3500 psi for 30 minutes -(450 psi ~ loss . Retest 9 5/8" casin to 3500 psi for 30 minutes -(500 I psi loss . Consult with Anchorage Team - decision was made to proceed with Whipstock operation, based on cement isolation from USIT log. 17:30 - 18:30 1.00 BOPSU P DECOMP R/D test equipment. Set wear ring. PJSM to P/U Whipstock. 18:30 - 21:30 3.00 STWHIP P WEXIT P/U Whipstock Assembly & BHA. Surface test MWD @ 905' md. 450 gpm / 740 psi. NaCI Brine wt= 9.6 ppg. 21:30 - 00:00 ~ 2.50 STWHIP P W EXIT Single in with Whipstock. Picked up 68 jts of 5" DP to 3,072' md. 6/26/2007 00:00 - 04:30 4.50 STWHIP P WEXIT Continue to pick up 5" drill pipe and single in hole w/ Whipstock ~ from 3,072' md to 6,095' md. 04:30 - 05:00 0.50 STWHIP P WEXIT Orient and set Whipstock 20 deg left of high side. 12K to set anchor, pulled 20k over to ensure anchor set. Shear bolt off Whipstock with 40K down wt. 05:00 - 06:00 1.00 STWHIP P WEXIT Displace 9.6 ppg NaCI brine with 9.3 ppg LSND Milling / Drilling fluid. Pump 45 bbl Spacer / Hi vis sweep and displace with 580 bbls of new LSND mud. Record SPRs. 06:00 - 12:00 6.00 STWHIP P WEXIT Mill window in 9 5/8" 47# L-80 casing. TOW= 6,074' md - BOW= 6,091' md. P/U wt= 155K, SOW= 140K, Rt wt= 145K, Printed: 8/14/2007 428:49 PM ~ ~ BP EXP~C?RAT1~N , Page 3 ofi 22'. Operation~ Sumrnar~ Repc~rt Legal Well Name: 12-05 Common Well Name: 12-05 Spud Date: 10/30/1979 Event Name: REENTER+COMPLETE Start: 6/20/2007 End: 7/3/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 7/31/2007 Rig Name: NABORS 7ES Rig Number: ' Date ; From - To Hours Task Code NPT Phase ' Description of Qperations 6/26/2007 06:00 - 12:00 6.00 STWHIP~i P ~ WEXIT Tq on= 11K, Tq off= 4.5K, GPM= 450, Psi on= 880, Psi off= ~ 848, RPM= 75. W indow Mill appears to have jumped off ; ~ Whipstock slide after milling 8' of window. Drill ahead in 8 1/2" ~ open hole to 6,116' md. 12:00 - 13:00 1.OOi STWHIP, P i WEXIT Pump 30 bbl "Super Sweep". Chase with 782 bbls @ 488 gpm i / 1036 psi, RPM= 88, Tq= 6.5K. Sweep recovered a small ~ amount of inetal. Total metal (9 5/8" csg) recovered = 316 Ibs. 13:00 - 15:00 2.00 I STWHIPI P WEXIT R/U test equipment and perform FIT test to a 12.7 ppg EMW. ( i 9.3 ppg, 5,512 tvd, 975 psi) 15:00 - 16:00 1.00 STWHIP~ P WEXIT R/D test equipment. Record SPRs. Monitor weli - Static. Pump i i dry job. 16:00 - 19:30 3.50 STWHIPI P ~ WEXIT POH f/ 6,116' md to 903' md. MW in= 9.3 ppg - MW out= 9.35 Pp9~ 19:30 - 22:00 2.50 STW HIP P ( W EXIT L/D BHA & Mills. Upper Mill in gauge, Lower Mill shows very light wear, Starter Mill shows wear on dead center of face. 22:00 - 23:00 1.00 STWHIP P WEXIT Pull wear ring. Flush stack. Instali wear ring. 23:00 - 00:00 1.00 STWHIP P ~ WEXIT P/U 5" DP. Single in 13 jts. 6/27/2007 00:00 - 01:00 1.00 STWHIPI P I WEXIT P/U and single in 24 jts of 5" drill pipe. POH and stand back same. 01:00 - 03:30 2.50 STW HIP P ~ W EXIT P/U new 8 1/2" PDC Bit & Power Drive Rotary Steerable System BHA. Test MWD & Power Drive. GPM= 475, Psi= 75. ~ Test for 15 minutes. 03:30 - 07:00 3.50 STW HIP P W EXIT P/U 5" drill pipe and single in hole to 3,590' md. 07:00 - 07:30 0.50 STWHIP P WEXIT Service Top Drive and Blocks 07:30 - 09:00 1.50 STW HIP P W EXIT Tie in, Log up f/ 3,590' md to 3,320' md. FPH= 300, Gpm= 500, I Psi= 1015, Up wt= 155K, SOW= 110K, I 09:00 - 11:30 2.50 STWHIP P WEXIT Continue to single in hole with 5" DP f/ 3,590' md to 6,034' md. 11:30 - 12:00 0.50 STWHIP P WEXIT Run in 1 stand from derrick make up top drive. Slowiy siide through window with no problems. Top of window at 6074' md, bottom of window at 6091' md. Establish circulation GPM=500, Up wt= 155K, SOW= 138K. Wash down to 6100' md taking weight. Rotate at 40 RPM down to 6,116' md. 12:00 - 19:00 7.00 DRILL P INT1 Drill ahead trouble free f/ 6,116' md to 6,728' md. GPM= 546, Psi= 1730, Up wt= 178K, SOW= 138K, Rt wt= 148K, RPM= 150. 19:00 - 20:00 1.00 DRILL N WAIT INT1 At 6,728' md, cuttings box is full. (Unabie to get a back up Super Sucker to keep up with cuttings returns). Change shaker screens and treat with Screenkleen. Loosing mud over shakers. P/U off bottom and circulate. Wait on Super Sucker. 20:00 - 00:00 4.00 DRILL P INT1 Drill ahead from 6,728' md. @ 6,980' md pump Hi Vis Sweep, 30 bbls @ 250 vis, noted moderate increase of cuttings on bottoms up. Drill to 7,232' md. W06= 20K, Psi on= 1820, Psi off= 1770, Tq on= 12K, Tq off= 9K, Up wt= 180K, SOW= 138K, RPM= 150, Rt wt= 150K. Calc ECD= 9.91 ppg, Act ECD= 10.02 ppg 6/28/2007 00:00 - 01:30 2.00 DRILL P INT1 Drill to 7,232'md. Inconsistant response to RSS. BHA not turning to the right and not responding to surface commands. Power Drive RSS assy not responding to tool changes Pump i Hi Vis Sweep while waiting on decision to POH, due to tool failure. 01:30 - 02:00 0.50 DRILL I N DFAL INTi POH due to Power Drive failure. POH f/ 7,232' md tp 7,012' ~ ~ md. Mud wt in= 9.3 ppg, Mud wt out= 9.35 ppg. Printed: 8/14/2007 4:28:49 PM ~ ~ BP EXPLORATIC~I~! ' ~'age ~. c~fi 22'' Operations Summar~ Rep~rt Legal Well Name: 12-05 Common Well Name: 12-05 Spud Date: 10/30/1979 Event Name: REENTER+COMPLETE Start: 6/20/2007 End: 7/3/2007 Contractor Name: NABORS ALASKA DRiLLfNG f Rig Release: 7/31/2007 Rig Name: NABORS 7ES Rig Number: Date From - Tfl Hours Task Code NPT Phase Descrip~ion of ~peratians 6/28/2007 02:00 - 04:30 2.50 DRILL j DFAL N I INT1 At 7,012' md, pulled 25K over. Worked tight spots severai i I times. Make up top drive & back ream f/ 7,012' md to 6,220' , md. GPM= 500, RPM= 100, Psi= 1250, Rt wt= 150K. From , ~ 6,220' md to 6,074' md (TOW) pumped out with no pipe ~ rotation. 04:30 - 05:00 0.50 DRILL N ', DFAL f INT1 Monitor well - static. Pump dry job at 9 5/8" casing window. I POH, 05:00 - 07:30 2.50 DRILL i N , DFAL INT1 POH t/ 6,074' md to 230' md. Mud wt in= 9.3 ppg, Mud wt out= ; 9.35 PP9~ 07:30 - 09:00 1.50 DRILL ' N ~ DFAL INTi Stand back collars, UD the rest of the BHA. 09:00 - 09:30 0.50 DRILL I I N i DFAL INT1 Clean & clear Rig floor. Service Top Drive. 09:30 - 11:00 1.50 DRILL I N i DFAL I INT1 P/U new Power Drive, M/U BHA to 230' md. 11:00 - 13:00 2.00 DRILL P i INT1 Safety stand down with both Rig crews, service company j ~ employees and BP Company representatives. 13:00 - 17:30 4.50 DRILL I N i DFAL INT1 Continue to RIH f/ 230' md to 7,232' md. Slowed through l window, 3K drag noted. 17:30 - 00:00 6.50 DRILL , P I INT1 Drill trouble free f/ 7,232' md to 7,838 md. At 7,650' md, ~ pumped a Hi Vis Sweep (9.3 ppg 256 vis) with a significant ', increase in cuttings (Fat -poker chip size). W06= 17-20K, Psi= 1745, GPM= 544, Tq on= 11.5K, Tq off= 7.5K, RPM= 150, Up i wt= 180K, SOW= 140K, ECD calc= 9.95 ppg, ECD act= 10.17 I pp9, Mud wt in= 9.3 ppg, Mud wt out= 9.3+ ppg. 6/29/2007 00:00 - 12:00 12.00 DRILL P ', INTi Directionally drill from 7,838' md to 9,061' md. W06= 20 - 30K, ~I GPM= 550, Psi on= 2058, Psi off= 1979, Tq on= 13.5K, Tq off= !I 11 K, Up wt= 205K, SOW= 155K, Rt wt= 160K, RPM= 150, Calc ECD= 10.04, Act ECD= 10.87, Mud wt in= 9.3 ppg, Mud ~ wt out= 9.4 ppg. At 8,116' md pumped a Hi Vis Sweep (30 bbis i ~ 243 vis) with a moderate increase in cuttings ( Act ECD f/ 10.4 ! ppg EMW to 10.2 ppg EMW). At 8,503' md pump Hi Vis Sweep (30 bbls 255 vis) moderate increase in cuttings, no ECD 'i change. At 8,966' md pump Hi Vis Sweep (30 bbis 280 vis) I moderate increase in cuttings, no ECD change. 12:00 - 00:00 12.00 DRILL P INTi Directionally driil from 9,06f' md to 10,762' md. WOB= 30K, GPM= 545, Psi on= 2554, Psi off= 2460, Tq on= 17K, Tq off= 16K, Up wt= 270K, SOW= 165K, Rt wt= 165K, RPM= 150, Calc ECD= 10.11, Act ECD= 10.41, Mud wt in= 9.4 ppg, Mud , wt out= 9.45 ppg. At 10,385' md, pumped a Hi Vis Sweep (30 bbls 265 vis) with a moderate increase in cuttings ( Act ECD f/ ~ 11.12 ppg EMW to 11.04 ppg EMW). At 10,668' md pump Hi i Vis Sweep (30 bbls 340 vis) moderate increase in cuttings, Act I ECD from 11.1 ppg to 10.4 ppg. 6/30/2007 00:00 - 03:30 3.50 DRILL P INT1 Directionally drill from 10,762' md to 11,234' md. Stopped I~ drilling and circulated. Wait on Spike fluid for weight up prior to I ~ entering the HRZ. 03:30 - 07:30 4.00 DRILL N ~ FLUD INT1 Wait on M-I Drilling Fluids. Spike Fluid not prepared in time. j Blend in Spike fluid, final mud wt in= 11.4 ppg, Mud wt out= I ~ 11.4 ppg. Establish new ECD & drilling parameters, establish new SPRs. 07:30 - 17:45 10.25 DRILL P INT1 Drill ahead from 11,234' md to 12, 052' md - TD. WOB= 29K, GPM= 499, Psi on= 2618, Psi off= 2578, Tq on= 20K, Tq off= I 17K, Up wt= 285K, SOW= 150K, ROT wt= 180K, RPM= 150, Calc ECD= 12.11, Act ECD= 12.8, Mud wt in= 11.4 ppg, Mud I I wt out= 11.45 ppg. Printed: 8/14/2007 4:28:49 PM ~ ~ Legal Well Name: 12-05 Common Well Name: 12-05 Event Name: REENTER+COMPLETE Contractor Name: NABORS ALASKA DRILLING I Rig Name: NABORS 7ES Date From - To Ho~rrs T~sk Code NPT~ 6/30/2007 I 17:45 - 19:30 1.75 DRILL P ~ ; Start: 6/20/2007 Rig Release: 7/31/2007 Rig Number: r,~___ i r. INT1 19:30 - 20:30 1.00 DRILL P INT1 20:30 - 21:30 1.00 DRILL P INT1 21:30 - 23:30 2.00 DRILL P INT1 23:30 - 00:00 0 50 DRILL P INTi ~ i . ~ 7/1/2007 ! 00:00 - 01:30 1.50 DRILL P INT1 01:30 - 02:30 1.00 DRILL P INT1 02:30 - 06:00 3.50 DRILL P INT1 06:00 - 08:00 2.00 DRILL P INT1 08:00 - 15:00 I 7.001 DRILL I P I I INT1 15:00 - 17:30 2.50 DRILL P INT1 17:30 - 19:00 1.50 CASE P LNR1 19:00 - 20:00 1.00 CASE P LNR1 20:00 - 21:00 1.00 CASE P I LNR1 21:00 - 22:00 1.00 CASE P LNR1 ~ 22:00 - 00:00 2.00 CASE P LNR1 7/2/2007 00:00 - 05:30 5.50 FISH P LNR1 05:30 - 06:30 1.00 FISH P LNR1 06:30 - 09:00 2.50 FISH P I LNR1 09:00 - 09:30 0.50 FISH P LNR1 09:30 - 10:00 0.50 FISH P LNR1 10:00 - 12:00 2.00 FISH P LNR1 12:00 - 15:30 3.50 FISH P LNR1 15:30 - 16:00 0.50 FISH P LNR1 16:00 - 19:00 I 3.001 FISH I N I STUC I LNR1 Spud Date: 10/30/1979 End: 7/3/2007 Circulate two bottoms up at TD- 12, 052' md / 8,726' tvd for samples to confirm top of Sag River formation- GPM= 499, Psi off= 2578, RPM= 150, Calc ECD= 12.11, Act ECD= 12.47, Mud wt in= 11.4 ppg, Mud wt out= 11.45 ppg. Monitor well - static. POH to 11,550' md. At 11,550' md, noted hole swabbing. Back ream to 10,951' md at drilling rate parameters. POH f/ 10,951' md to 8,966' md above the HRZ. No indication of drag pulling top stabilizer fhrough window. At 8,966' md, pump dry job, blow down Top Drive. POH to 8,683' md. POH f/ 8,683' md to 6,040' md. Up wt= 190K, SOW= 160K, No drag noted from straight blade stabilizer or BHA at window. Slip and cut drilling line. Service Top Drive. During Rig service, circulated and pumped a Hi Vis Sweep to ensure casing clean (casing @ 45 degree hole angle). RIH f/ 6,040' md to TD Q 12,052' md. Fill DP every 2,000 ft.Up wt= 280K, SOW= 155K. Circulate. Pump Hi Vis Sweep (moderate increase in cuttings). Circulate a second bottoms up. GPM= 500, Psi= 1500, RPM= 150, Rt wt= 175K. Mud wt in= 11.4, Mud wt out= 11.45. POH f/ 12,052' md to 11,234' md (Above the HRZ @ 11,352' md) Up wt= 280K, SOW= 150K. Pump dry job. Blow down Top Drive. POH to 739' md. L/D HWDP and BHA. PJSM, Pull wear bushing, Set test plug. Change Top Rams to 7". R/U for Pressure test. Pressure test 7" Rams and doors @ 250 Psi- Low & 3500 Psi High. - Pass. Pull test plug, set wear bushing, R/D test jt. R/U to run 7" 26 # L-80 BTC & TCII Liner. Best- o- Life 2000 casing dope on BTC jts. PJSM. Run 7" 26# L-80 to 1,109' md. Continue to Run 7" 26#, L-80 Drilling liner f/ 1109' md to 5553' md. Pick up BTC to TC-II cross over. Rig up torque turn on casing power tong. Continue running 7" 26# L-80 TC-II liner from 5553' to 6,040' md'. Use Jet Lube Seal Guard pipe dope on TCII jts. R/U & circulate 1 1/2 Liner volumes (306 bbls). GPM=206, Psi= 547. R/D & blow down circ equipment. P/U & RIH w/ Liner Hanger & Packer T/ 6,145' md. P/U 1 stand of DP, M/U cement head to single jt & L/D on skate. RIH w/ 7" Liner on DP.f/ 6,145' md to 8,252' md, fill DP every 10 stds. Run 7" Liner 8,252' md to 11,800' md. Up wt= 280K, SOW= 110K. Mud wt in=11.4 ppg, Mud wt out =11.45 ppg. Work Liner down irom 11,800' md to 11,880' md, 85K drag noted. No progress noted. attempt establish circulation and work pipe up. Work stuck pipe. Attempt to circulate, packing off, work liner f/ 11,882' md to 11,855' md. Up wt= 350K, SOW= 75K. Prinied: 8/14/2007 4:28:49 PM ~ ~ E701'z Legal Well Name: 12-05 Common Well Name: 12-05 Event Name: REENTER+COMPLETE Contractor Name: NABORS ALASKA DRILLING I Rig Name: NABORS 7ES Date From - To Haurs Task Cade NPT Ph ~- ' 7/2/2007 ,~ 19:00 - 22:30 ~ 3.50 FISH N STUC LNR I 7/3/2007 22:30 - 00:00 I 1.501 FISH I N I STUC I LNR I 00:00 - 08:00 5.001 FISH I N I STUC I LNR 17/4/2007 08:00 - 12:15 I 4.251 FISH I N I STUC I LNR 12:15 - 13:15 I 1.001 FISH I N I STUC I LNR 13:15 - 15:45 I 2.501 FISH I N I STUC I LNR Spud Date: 10/30/1979 Start: 6/20/2007 End: 7/3/2007 Rig Release: 7/31 /2007 Rig Number: ase Descriptifln of Qperations 1 Work Liner from 11,882' md to 11,87Q' md. Circulate @ 1 bpm / 580 psi. Up wt= 350K, SOW= 75K. 1 ~ Increase pump rate in 1/2 bbl increments to 3 bpm / 720 psi. Work Liner f/ 11,882 md to 11,869' md. Up wt= 375K, SOW= 75K. Noted Gas and a decrease in Mud wt out to 9.6 ppg. 1 Continue to work stuck pipe and circulate from 11,882' md to 11,869' md. Noted Mud comming out aired up. Mud wt out= 9.6 ppg, Mud wt in= 10.3 ppg. Continue to increase mud wt and pump rate as hole conditions allow. Work pipe Up wt= 400K, SOW=75K. Progess 1 ft up. 1 Work pipe. Unable to free stuck pipe. Consult w/town team. Circulate at 162 gpm, 969 psi and slowly increase to 204 gpm, 1575 psi. 1 Rig up cementing head and lines. PJSM with rig crew and cementers while circulating. 1 Pump 5 bbl H2O, test lines to 3000 psi. Pump 25 bbl of Class G cement Tail slurry at 15.8 ppg with additives. ICP 750 psi. Drop drill pipe wiper dart. Pump 5 bbls displacement H20 with Schlumberger to clear lines. Switch to rig pumps. Displace with 97 bbl ot 11.6 ppg LSND mud, 210 gpm, latched up on liner plug and shear with 1650 psi. Continue displaceing with 231 bbl. Noted some packing off when cement came around shoe with pressure increase to 1500 psi. Slowed pump rates to 2.5 bpm, 850 psi. and continued displacement. Full returns throughout job. Bump plugs af ianding collar w/FCP 850 psi. Increase pressure to 1350 psi and hold f/5 min. Did not set liner hanger. Bleed pressure off and check floats for backflow. 15:45 - 16:30 ~ 0.75 ~ FISH ~ N I STUC ~ LNR1 16:30 - 17:30 I 1.001 FISH I N I STUC I LNR1 17:30 - 20:15 2.75 FISH N STUC LNR1 20:15 - 20:45 0.50 FISH N STUC LNR1 20:45 - 21:15 0.50 FISH P LNR1 21:15 - 22:45 ' 1.50 FISH N STUC LNR1 22:45 - 00:00 1.25 FISH N STUC LNR1 00:00 - 01:45 1.75 FISH N STUC LNR1 01:45 - 02:00 , 0.25 FISH N STUC LNR1 02:00 - 03:00 I 1.00 FISH N STUC LNR1 03:00 - 03:30 I 0.50 FISH N STUG LNR1 Rotate C-2 liner running tool 15 turns to right to release from liner hanger. PU until packoff clear of extension sleeve. Circulate bottoms up at 403 gpm, 1232 psi. Top of liner = 5742'. Recovered samples from shaker on botoms up. Finely ground shale and sand, no large splinters or cavings. LD cement head, monitor wel~, pump dry job, blow down top drive. POH w/5" drili pipe. LD liner running tools. Service rig and top drive. Adjust brakes. PU Fishing spear BHA # 4 w/Bowen Itco spear for 7" 26# liner, XO sub, 4-3/4" drill coliar, XO, 7-3/8" OD no-go sub to locate inside and at bottom of ZXP extension sleeve, XO to 5" drill pipe. Min. ID of BHA = 2" at Bowen Itco Spear. OAL of BHA = 39.74'. RIH on 5" drill pipe. Cont. RIH w/fishing speer on 5" drill pipe to 5613'. Monitor weil, static. Consult w/ODE and agree that Schlumberger pack off sub is appropriate well control device w/current weli conditions. Refer to Drilling and Workover Wireline Pressure Control SOP. RIH f/ 5613' to 5771'. PU 130K, SO 115K. CO to long bails and PU 20' pup jt. Printed: 8/14/2007 4:28:49 PM ~ ~~ ! BP EXPLOF~AT'1(~[~1' Page 7 of 22'' ~peratic~ns Su~nmary R~part Legal Well Name: 12-05 Common Well Name: 12-05 Spud Date: 10/30/1979 Event Name: REENTER+COMPLETE Start: 6/20/2007 End: 7/3/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 7/31/2007 Rig Name: NABORS 7ES Rig Number: Date ~ From - To Hours ~ Task Code NPT Phase I' Description of Operations ~ 7/4/2007 03:30 - 04:00 ' 0.50 FISH N I STUC LNR1 RIH to 5789' and land spear assy. w/7.375" stop sub NOGO at I bottom of ZXP extension sleeve (to avoid setting liner top ~~, packer). Engage spear. PU to 300K to confirm spear l ' I engaged. SO to 115K. 04:00 - 06:00 i 2.00 FISH N i STUC LNR1 PJSM w/all hands, Schlumberger, WSL, Tourpusher. RU Schlumberger wireline to run freepoint tool. 06:00 - 07:00 1.00 FISH N STUC LNR1 RIH w/eline to 2000'. PU to 275K w/drill pipe. Test freepoint tool. Pull 275K to 340K several times. 07:00 - 09:00 2.00 FISH N ~ DFAL LNR1 RIH and check Schiumberger freepoint tool at 4000'. Bottom anchor on tool not functioning. ~ 09:00 - 09:30 0.50 ~ FISH N DFAL LNR1 POH w/freepoint tool. I 09:30 - 12:00 2.50 FISH N DFAL LNR1 Wait while Schlumberger repaired freepoint tool. 12:00 - 13:00 1.00 i FISH N DFAL LNR1 RIH w/repaired freepoint tool. 13:00 - 16:00 3.00 I FISH N STUC LNR1 Hunt and find freepoint. Pipe stuck at top of window, 6075'. 16:00 - 17:00 1.00 FISH N STUC I LNR1 POH w/e-line freepoint tool. I 17:00 - 17:30 0.50 FISH N STUC LNR1 RD Schlumberger e-line unit. ~ 17:30 - 21:30 4.00 ~ FISH N STUC LNR1 Release spear, CO bails, pump dry job, POH f/5789' to 40'. ~ MW 11.6 ppg. 21:30 - 22:15 0.75I FISH N STUC LNR1 LD Fishing BHA. 22:15 - 23:30 1.25 ~ BOPSU N STUC LNR1 Pull wear bushing. Test 2-7/8" x 5" bottom rams w(2-7/8" test jt. at 250 and 3500 psi. Install wear bushing. 23:30 - 00:00 0.50 j FISH N STUC LNR1 PJSM. PU Fishing BHA #5 w/5.5" multistring cutter, 6.125" OD i stabilizer, 3 ea. 4.75" drill collars, XO. OAL of BHA = 101.19". 7/5/2007 00:00 - 00:30 0.50 ~ FISH N STUC LNR1 Cont. PU muitistring casing cutter BHA #5. 00:30 - 02:00 1.50 ~ FISH N STUC LNR1 PU 30 jts. 4" HT40 drill pipe 1 x 1 f/pipe shed. 02:00 - 03:30 1.50 FISH N STUC LNR1 RIH w/multistring cutter on 5" drili pipe f/derrick to 5400'. 03:30 - 05:00 1.50 FISH P LNR1 Slip and cut drill line. Service top drive. Service rig. 05:00 - 06:00 1.00 FISH N STUC LNR1 RIH and locate casing collar at 6699' w/multistring cutter. 06:00 - 07:30 1.50 FISH N STUC LNR1 Move multistring cutter 6' below collar to 6705' and attempt to ~ cut 7" casin . 61 rpm, 197 gpm, 1037 psi. Saw no indications ~ of cut in 1.5 hrs. of rotating cutter. 07:30 - 09:30 2.00 j FISH N STUC LNR1 POH f/6705' to 6532' pump dry job. Cont. POH to 1058'. 09:30 - 10:30 1.00 i I FISH N STUC LNR1 CO elevators. POH f/1058' to 103', LD 30 jts. 4" drill pipe 1 x 1. 10:30 - 11:00 0.50 ~ FISH N STUC LNR1 LD drill collars and muitistring cutter. Knives did not have wear ~ pattern consistent w/cutting comp{etely through 7" casing. 11:00 - 12:00 1.00 j FISH N STUC LNR1 Clear floor. Consult w/town team on plan forward. 12:00 - 12:30 0.50 ~ FISH N STUC LNR1 Test injectivity of OH 1/2 bpm at 520 psi, inject 5 bbls. Shut in. Lose 210 psi in 5 mins. 12:30 - 14:30 2.00 BOPSU N STUC LNR1 PJSM and CO top rams to 3.5" x 6" variable. 14:30 - 16:15 1 J5 ~ BOPSU N STUC LNR1 Test top rams and doors to 250/3500 psi low/high pressure. 16:15 - 21:00 4.75 ' REMCM N STUC LNR1 RIH f/surface to 5724' w/9-5/8" EZSVi cement retainer on drill pipe to Install EZSV for whipstocWsidetrack installation. 21:00 - 22:00 1.00 PXA N STUC LNR1 Set EZSVi cement retainer w/top at 5724' above casing collar at I 57 . asing co ar above locate at 5693'. Sting out of EZSV to close cementing valve for casing test. 22:00 - 22:30 0.50 PXA N STUC LNR1 Pressure test casing f/surface to EZSV at 5724' to 3500 psi and o or mins. ass. o w i e es mg w/Schlumberger, WSL, all hands, tourpusher, MI rep. 22:30 - 00:00 I 1.50 PXA N STUC LNRi Sting in to EZSV. SO 25K. RU lines and perform injection test below EZSV. Pump 42 gpm, broke down at 700 psi, inject 5 bbls 11.6 ppg LSND mud at 525 psi. Sting out of EZSV and Printed: 8/14/2007 428:49 PM ~ ~ BP' EXPLORATI. '~ E~l' Page 8 Qf 22 Operatior~s Summar~y ~Report Legal Well Name: 12-05 Common Well Name: 12-05 Spud Date: 10/30/1979 Event Name: REENTER+COMPLETE Start: 6/20/2007 End: 7/3/2007 Contractor Narne: NABORS ALASKA DRILLING I Rig Release: 7/31/2007 Rig Name: NABORS 7ES Rig Number: ' Date From - To Hours Task Code ~ NPT Phase Qescription of Operatians 7/5/2007 22:30 - 00:00 1.50 PXA N I STUC LNR1 close annular preventer. Line up to take returns through choke. Pump 5 bbis H20 ahead of cement. Test ! Schlumberger lines to 3000 psi. Walk lines. OK. Mix on the fly and pump 20 bbis of 17 ppg Class G cement w/additives ' i w/Schlumberger. ( Pump time = 4hrs. 26 min to 70 Bc.) Follow cement w/5 bbls. H2O. Hold backpressure f/270 psi to ; 330 psi w/choke to keep cement f/U-tubing. Pump cement at 3 ~~ I bbls. max rate through choke/gas buster while circulating cement down drill pipe. 7/6/2007 00:00 - 01:30 1.50 REMCM N STUC ~ LNR1 Switch to rig pumps and continue displacing with 67 bbl LSND i mud to position first 5 bbl water at stinger. Shut choke and ~ I sting into EZSV. Open annular preventer and monitor annulus. I i Pump 20 bbis more displacement at 42 gpm, 300 psi initial i injection pressure below EZSV to squeeze lead 5 bbl water and I 15 bbls cement below EZSV. Pressure built to 400 psi at end ~ i of displacement at 0.5 BPM. Shut down pumps and sting out i i of EZSV. Monitor well. Static. Position end of stinger 1' above i j top of EZSV to clean off top of EZSV, and circulate remaining ~ cement and water in drill pipe out ot well. Circulate at 510 ~ i gpm, 1664 psi. Circulate 2 bottoms up. Recovered and i ! overboarded to cuttingstank 30 bbls of cement contaminated i ~ mud at first bottoms up. Shut down pumps. Monitor weli. i i j Static. 01:30 - 04:00 ~ 2.50 REMCMT N STUC i LNR1 POH from 5723' to surface and lay down EZSV running tool. ~ Tool in good shape w/small amount of green cement on stinger ~ ~ and on 2 jts above running tool. 04:00 - 06:00 2.00 BOPSU P ~ W EXIT RU for BOP test. 06:00 - 10:45 4.75 BOPSU P i W EXIT Test BOP. 250/3500 psi low/high pressure. Record on chart. ~ Test witnessed by Joey LeBlanc/Duncan Ferguson WSLs, and ~ ' ~ Chris Weaver NAD toolpusher. AOGCC rep Chuck Scheve waived AOGCC witness at the BOP test. 10:45 - 11:45 1.00 BOPSU P W EXIT RD test esquipment and clear floor. 11:45 - 17:15 5.50 STWHIP N STUC WEXIT Pick up 9-5/8" Baker Gen I~ window milling assy. with: 9-5/8" bottom trip anchor, 9-5/8" Whipstock with 17.07" slide, 8-3/8" OD window mill, 8-3/8" OD lower mill, 6.26 OAL flex jt., 8-1/2" OD upper mill, 1 jt. 5" NWDP, saver sub w/float, MWD, UBHO sub, Bowen bumper sub, XO, 9 ea. 6-1/4" drill collars, XO, 17 jts 5" HWDP. OAL of BHA = 903.32'. Min. ID of BHA = 1.5" at window mill. 17:15 - 17:30 0.25 STWHIP N STUC WEXIT Shallow test MWD. 17:30 - 20:45 3.25 STW HIP N STUC W EXIT RIH f/903' to 5633'. 20:45 - 21:00 0.25 STWHIP N STUC WEXIT Orient Whipstock 28 deg. left of high side. 21:00 - 21:30 0.50 STWHIP N STUC WEXIT Pick up weight 150K, SO 123K. RIH with mill and Whipstock assembly from 5633' tag up on EZSV at 5724'. Set down 20K and see one shear. Pick up and pipe free. No overpull. SO 40K. PU and pipe free. SO 35K. No clear indication of both anchor setting and shear pin shearing. Pich up and attempt to mill. Torque up to 16K. PU 20K over string wt. and pull free. ~~ w ~ ~'~ Start millin . 100 r m, 6K tq., 520 gpm, 1100 psi. TOW at ~ 5702' md, 5238' TVD. 21:30 - 22:30 1.00 STWHIP N STUC WEXIT Displace old LSND to new 9.3 ppg milling fluid. 21:30 - 00:00 2.50 STWHIP N STUC WEXIT Mill window in 9 5/8" casing from 5702' to 5705'. 390 gpm, 740 psi, 100 rpm, tq. 8K to 10.5K. Printed: 8/142007 428:49 PM ~ ~ BP EXPLORATIC3N Page ~ of 22 '{)perations Summ:ary Re~ac~rt Legal Well Name: 12-05 Common Well Name: 12-05 Spud Date: 10/30/1979 Event Name: REENTER+COMPLETE Start: 6/20/2007 End: 7/3/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 7/31/2007 Rig Name: NABORS 7ES Rig Number: i ~ Date Frarn - Ta Haurs Task Cod~PT Phase ~ Description of Oper~fions -- , ~ 7/7/2007 00:00 - 02:30 2.50 STW HIP N i STUC 'I W EXIT Mill window in 9 5/8" casing from 5702' to 5719'. 750 psi, 400 l i ~ gpm, 100 rpm, 8K tq. 230# metal recovered. BOW 5719' MD, 5249' TVD. 02:30 - 04:00 1.50 STWHIP N STUC ~', WEXIT I Mill into open hole from 5719' to 5746'. 760 psi, 400 gpm, 100 ! rpm, 8K tq. Run mills with rotation through window until ~~ smooth. 04:00 - 05:00 1.00 STW HIP N STUC I, W EXIT Circulate 80 vis super sweep surtace to surface 400 gpm, 750 ' psi. Total of 245# metal recovered. 05:00 - 07:30 2.50 STWHIP N STUC ! WEXIT PU above window to 5700'. RU & perform FIT to 700 psi/11.87 ppg EMW with 9.3 ppg LSND mud, 5702' MD, 5238' TVD. i 07:30 - 09:30 2.00 STWHIP N STUC ' W EXIT POH to HWDP at 903'. ' 09:30 - 11:30 2.00 STWHIP N STUC ~ W EXIT Rack back HWDP, LD drill collars and LD window milling BHA. 11:30 - 12:30 1.00 BOPSU N ~ STUC ~ W EXIT Inspect wear ring, jet stack to clear cuttings, install wear ring. 12:30 - 15:15 2J5 STWHIP N I STUC ~' W EXIT MU Rotary Steerable BHA #8 w/Hycalog RSX619M-A7 bit, ~ I PowerDrive Rotary Steerable assy. w/float, ARC, MWD, NM i stabilizer, 2 ea NM spiral drill collars, NM stabilizer, NM spirai ! ~ drill collar, floaUsaver sub, ball catcher f/CCV, CCV, hydraulic ~ jars, 17 jts 5" HWDP. Ghost reamer 1783' behind bit. Surface test Power Drive and MWD. OAL BHA bit to HWDP = 230'. 15:15 - 18:00 2.75 STWHIP N STUC WEXIT RIH f/739' to 5653'. 18:00 - 19:00 1.00 STWHIP N RREP , WEXIT Replace topdrive oil cooler motor. 19:00 - 19:30 0.50 STWHIP P I, WEXIT Service rig and topdrive. 19:30 - 20:30 1.00 STWHIP P I WEXIT Slip and cut drilling line. 20:30 - 21:00 0.50 STWHIP N STUC ~ WEXIT RIH through window f/5702' to 5719'. Took 3K wt. when bit at I 5719'. RIH to 5746'. 21:00 - 00:00 3.00 DRILL N STUC i INT1 Drill directionally w/Rotary Steerable system f/5746' to 5900'. ~ 5K WOB, 560 gpm, 1469 psi on, 1449 psi off, 7K tq on, 5k tq ~ off, PU 160K, SO 130K, ROT 140K, 40-150 rpm. ECD 9.85 calculated, 9.90 actual. ART = 1.7 hrs f/24 hrs. ~ Progress = 154' f/24 hrs. 7/8/2007 00:00 - 02:00 2.00 DRILL N STUC i INT1 Drill directionally w/Rotary Steerable System f/5900' to 6074'. ; ~ 5K WOB, 550 gpm, 1441 psi on, 1425 psi off, 8.5K tq on, 5k tq ~ off, PU 170K, SO 140K, ROT 150K, 140 rpm. ECD 9.85 calculated, 9.90 actual. MW = 9.3 ppg. 02:00 - 03:00 1.00 DRILL N ~ STUC INT1 Shut down. Torque spike f/7K to 10K at 6074' at TOW for 1 st ( I sidetrack f/motherbore. Consult w/ODE. Decision made to drili ~ i ahead 2 stands to attempt to get away f/motherbore. 03:00 - 06:00 3.00 DRILL N STUC INT1 Drill directionally w/Rotary Steerable System f/6074' to 6320'. 5K W OB, 550 gpm, 1560 psi on, 1540 psi off, 9.5K tq on, 7k tq off, PU 175K, SO 135K, ROT 150K, 147 rpm. ECD 9.85 calculated, 10.14 actual. MW = 9.3 ppg. 06:00 - 06:30 0.50 DRILL N STUC INT1 ~ Circulate. Unable to build angle away f/mother bore. Consult w/ODE. 06:30 - 10:00 3.50 DRILL N STUC ; INT1 Control drill f/6602' to 6697' and attempt to drop angle. 550 ~I gpm, 1575 psi on, 1550 psi off, 150 rpm, 10K tq on, 7K tq off, ; PU 175K, SO 138K ROT 148K. Good indication of seperation ~ ~ from motherbore (25') but little dogleg respocse from RSS. I Stop drilling. Monitor well, static 10:00 - 13:30 3.50 DRILL N STUC ; INT1 POH to change BHA and inspect bit. MW = 9.3 ppg in and out. Pump dry job. POH f/6697' to 2584'. No problem pulling through window. 13:30 - 15:30 2.00 DRILL N STUC INT1 POH f/2584' to surface and LD Rotary Steerable BHA #8. Test PowerDrive. LD PowerDrive. Change bit, 4 out of 6 blades had Printed: 8/74/2007 4:28:49 PM ~ ~ 'i BP: EX C~peration$ Legal Well Name: 12-05 Common Well Name: 12-05 Event Name: REENTER+COMPLETE Contractor Name: NABORS ALASKA DRILLING ! Rig Name: NABORS 7ES Date From - To Hours ~ Task Code NPT ' ~isi2oo~ INT1 15:30 - 15:00 i 2.501 DRILL I N I STUC I INT1 18:00 - 22:00 I 4.001 DRILL I N I STUC I INT1 22:~0 - 00:00 I 2.001 DRILL I N I STUC I INT1 7/9/2007 i 00:00 - 06:00 I 6.001 DRILL I N I STUC I INT1 06:00 - 00:00 I 18.001 DRILL I N I STUC I INT1 ~:~ iv~v Spud Date: 10/30/1979 Start: 6/20/2007 End: 7/3/2007 Rig Release: 7/31/2007 Rig Number: ase Descriptiori c~f Operations damaged cutters on gague row of Hycalog 8.5" RSX619M-A7 ~ bit. ~ MU and RIH w/Rotary Steerable BHA #9 w/Hughes 8.5" ' HCR605Z bit, PowerDrive Rotary Steerable System w/float, ' ARC, MW D, NM stabilizer, 2 ea. NM spiral drill collars, NM stabilizer, NM spiral drill collar, fioaUsaver sub, ball catcher f/CCV, CCV (circ valve), hydraulic jars. OAL of BHA = 230'. 17 jts. 5" HW DP above BHA. Straight blade ghost reamer 933' above bit. RIH f/933' to 6697'. No difticulty w/BHA in window f/5702' to 5719'. Circulate/cycle pads on RSS f/5775' to 5847', 8K drag at 5775, 503 gpm, 1364 psi. Drill directionally w/RSS f/6697' to 6888'. 15K WOB, 550 gpm, 1656 psi on, 1632 psi off, 9K tq on, 7k tq off, PU 175K, SO 135K, ROT 150K, 150 rpm. ECD 9.67 calculated, 10.24 actual. MW = 9.3 ppg. ADT f/24 hrs = 7.96 hrs. Progress f/24 hrs. = 988'. Drill directionally w/RSS f/6888'. 7580'. 20K WOB, 550 gpm, 1680 psi on, 1680 psi off, 10K tq on, 8k tq off, PU 183K, SO 143K, ROT 153K, 150 rpm. ECD 9.63 calculated, 10.13 actual. MW = 9.3 ppg. Drill directionally w/RSS f/7580' to 9338'. 25K WOB, 550 gpm, 1893 psi on, 1871 psi off, 11 K tq on, 10K tq off, PU 205K, SO 150K, ROT 160K, 150 rpm. ECD 9.63 calculated, 10.39 actual. MW = 9.3 ppg. 7/10/2007 100:00 - 06:00 I 6.001 DRILL I N I STUC I INT1 ADT f/24 hrs = 18.3. Progress f/24 hrs. = 2450'. Drill directionally w/RSS f/9338' to 9980'. 25K WOB, 550 gpm, 2050 psi on, 2020 psi off, 12.5K tq on, 11 K tq off, PU 225K, SO 160K, ROT 165K, 150 rpm. ( ECD calc. = 10.03 ppg. ECD actual = 10.51 ppg. 06:00 - 00:00 18.00 DRILL N STUC i INT1 Drill directionally w/RSS f/9980' to 11545'. 28K WOB, 504 ~ gpm, 2501 psi on, 2481 psi off, 14K tq on, 13K tq off, PU 250K, i SO 150K, ROT 180K, 150 rpm. ; ECD calc. = 12.37 ppg. ECD actual = 12.77 ppg. ADT f/24 hrs = 18.79 hrs. Progress f/24 hrs. = 2207' Experienced 50 bbis/hr mud losses at 11225'. SD, performed flowcheck. Strung in 5#/bbl. Mix II medium. Pumped 45 bbls of 45#/bbl LCM pill w/Nut Piug Fine, G-Seal+, Magma Fiber, Safe Carb 40, Mix II medium. Fluid losses dropped to 0 bbls/hr by 11265' at top of HRZ. Total losses f/day = 92 bbls. LSND mud. I7/11/2007 ~ 00:00 - 06:00 ~ 6.00 I DRILL ~ N ~ STUC ! INT1 06:00 - 09:00 I 3.001 DRILL I N I STUC I INTi ECD calc. = 12.73 ppg. ECD actual = 12.77 ppg. Drill directionally w/RSS f/11545' to 11900'. 28K WOB, 503 gpm, 2485 psi on, 2460 psi off, 15K tq on, 16K tq off, PU 265K, SO 148K, ROT 183K, 150 rpm. MW 11.6 ppg. ECD caic. = 12.35 ppg. ECD actual = 12.58 ppg. Drill directionally w/RSS f/11900' to 12070'. 28K WOB, 500 Printed: 8/14/2007 4:28:49 PM ~ ~ BP'' EXPLURATIUN' Page:;11 c~f 22. Opera#~ons Summar~y Report Legal Well Name: 12-05 Common Well Name: 12-05 Spud Date: 10/3Q/1979 Event Name: REENTER+COMPLETE Start: 6/20/2007 End: 7/3/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 7/31/2007 Rig Name: NABORS 7ES Rig Number: ' '~ate From - To Hours Task Ccade NPT Phase Description of Opera~ions 7/11/2007 06:00 - 09:00 3.00 DRILL N STUC INT1 gpm, 2505 psi on, 2480 psi off, 13K tq on, 11 K tq off, PU 260K, SO 160K, ROT 150K, 150 rpm. MW 11.6 ppg. I ECD calc. = 12.27 ppg. ECD actual = 12.65 ppg. i ~ I ADT f/24 hrs. = 7.7 hrs. Progress for 24 hrs. = 525'. 09:00 - 11:00 ~ 2.00 DRILL N STUC INT1 CBU for samples per geologist for confimation of casing point. ~ Geologist identified Glauconite in sample to contirm TD point. i I 500 gpm, 2485 psi. Circulate BU x 2= 1154 bbls to clean hole. 11:00 - 12:00 i 1.00 ~ DRILL N STUC INT1 Monitor well. MW = 11.6 ppg. in and out. PU = 260K. SO = ( 160K. POH to 10045'. 25K overpull at 10110'. Work and wipe tight hole. , 12:00 - 15:00 3.00 DRILL N STUC INT1 POH f/10110' to 6,326". Pull over 40K, work multiple times, appears to be mechanical snag. After 6 attempts we were abfe to work by obstruction. Tripped in and out of obstruction with out any problems. 15:00 - 15:45 0.75 DRILL N STUC INT1 POH f/ 6,326' to 6,239', Pull over 40K, work multiple times, could not get past obstuction. Kelly up and rotate string 1/4 turn, pull tight, rotate 1/4 turn pull tight, rotate 1/4 turn pull tight. Pull 5K over and rotate string, BHA rolled off obstruction, tripped down past obsturction without any problems, pull tight on the way out, pull 5K and rotate string. 15:45 - 16:45 ~ 1.00 DRILL N STUC INT1 POH f/ 6,239' to 5,658'. Monitor well. Static. 16:45 - 17:45 i 1.00 DRILL P INT1 PJSM. Slip and cut 112' of driiling line. 17:45 - 18:15 j 0.501 DRILL P INT1 Service top drive and rig. 18:15 - 22:00 ~ 3.75 ~ DRILL N STUC INT1 RIH f/5658' to 12070'. No fili on bottom. 22:00 - 23:00 1.00 DRILL N STUC INT1 Circulate. Stage pump rates up to 421 gpm, 2058 psi. Pump Hi Vis sweep. Losing fluid. Lower pump rates to 165 gpm, 725 psi, 96 rpm. 12K tq. 100 bbl loss in 1/2 hr. String in MIX II medium. 23:00 - 00:00 1.00 DRILL N STUC INT1 Circulate at 100 gpm, 521 psi, 83 rpm, 12K tq. PU 255K, SO 150K, ROT 190K. Fluid losses stabilized. Begin to stage up rates slowly. 24 hrs losses = 158 bbls. 7i12/2007 00:00 - 01:00 1.00 DRILL N STUC INT1 Stage pump rates up in 25 gpm increments f/100 gpm to 502 gpm, 2510 psi. 150 rpm. MW = 1 t.6 ppg. Reciprocate 20'. No fluid losses. 01:00 - 02:30 1.50 DRILL N STUC INTi Continue circulating CBU x 2. 500 gpm, 2500 psi, 150 rpm. i See hole unload small amounts of shale cuttings, large ~ amounts of MIX II LCM when HI Vis sweep at surface. ~ ECD calculated = 12.39, ECD actual = 12.46 at completion of CBU x 2. MW = 11.6 ppg in and out. 02:30 - 06:00 3.50 DRILL N STUC INT1 POH f/12070' to 5,748'. Hole slick, no problems at 6,326' and 6,239'. Monitor well. Static. 06:00 - 09:30 3.50 DRILL N STUC INTi POH f/5748' to surface. Puli slow through window. No drag at window. LD RSS BHA # 9. Function test BOP. Clean and clear floor. 09:30 - 11:00 1.50 BOPSU N STUC LNR1 Pull wear bushing and install test piug. CO rams to 7". Test rams to 250/3500 psi low/high pressure. RD test equipment. Install wear bushing. 11:00 - 12:30 1.50 CASE N STUC LNR1 RU to RIH w/7" 26# BTC-M/TCII L-80 liner. 12:30 - 18:30 6.00 CASE N STUC LNR1 PJSM. RIH w/7" liner to 3991'. Fill on the fly w/complete fill every 10 stands. 18:30 - 19:00 0.50 CASE N SFAL LNR1 Power tong failure. CO power tongs. Printed: 8/14/2007 428:49 PM ~ ~ BP` EXPLORATIC)"N '' Page 12 of 22 Operations Summary Report Legal Well Name: 12-05 Common Well Name: 12-05 Spud Date: 10/30/1979 Event Name: REENTER+COMPLETE Start: 6/20/2007 End: 7/3/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 7/31/2007 Rig Name: NABORS 7ES Rig Number: Date ' From - To Hours Task Code NPT Phase Description of Qperations 7/12/2007 19:00 - 21:30 2.501 CASE ~, N STUC LNR1 RIH w/7" liner f/3991' to 5664'. Fill on the fly w/complete fiil I ' every 10 stands. 21:30 - 00:00 2.50; CASE I N STUC , LNR1 Circulate 1.5 liner volumes/325 bbls. at 5664'. Stage rates up ~ I slowly taking losses at 178 gpm. 389 psi. Back off rates to i ~ 148 gpm, 264 psi. Still taking losses. Backoff rate to 131 gpm, , ~ ~ 266 psi. Losses stabilize. Totai mud lost f/1.5 liner volumes = ~ i i i I 24 bbls. 7/13/2007 I 00:00 - 01:30 1.50 ; CASE i, N STUC LNR1 RIH f/5664' to 6510'. PU Baker ZXP liner top packer, Flexlock i liner hanger. Fill extension sleeve w/PAL MIX poymer and let ! polymer set up. Break circulation while waiting on polymer. PU 165K, SO 140K. 30 gpm, 260 psi. No losses. 01:30 - 02:30 1.00 CASE I N STUC LNR1 RU Baker plug dropping head and lay on skate. Reciprocate ~ ~ pipe. 02:30 - 10:00 7.50 CASE N STUC LNR1 RIH w/7" liner on drill pipe f/6510' to 5000'. Fill every 5 stands. Break circulation at 8000', MW in 11.6 Vis 47, MW out 11.9 Vis 59, circulate down to condition mud. 100 gpm @ 420 psi. Run/pump in at 12-13 min./stand to 10000'. 10:00 - 14:00 4.00 CASE N STUC LNR1 RIH. Tight hole encountered fl10000' to 10030'. Down weight decreasing and pump pressure increasing to RIH. Stop and circulate, reciprocate pipe and stage pumps up to 350 GPM @ 840 psi. Add lubricants. 25K overpull at 10023'. Work pipe f/10025' to 10040'. 14:00 - 15:00 1.00 I CASE I N STUC LNR1 Pump out of hole f/10025 U9778'. POH f/ 9778' to 9589' w/no pumps. PU 195K, SO 135K. 15:00 - 19:15 4.25 CASE ~ N STUC LNR1 RIH f/9589' to 10250'. 84 gpm, 380 psi. took 15K at 10452' '~ and 10470'. Worked tight spots. w/pumps on. PU 245K, SO, 140K. RIH without pumps. Took 15K at 10495'. Work tight spots. Took 25K at 11610'. POH 19:15 - 22:00 2.75 CASE N STUC LNR1 Work temporarily detained pipe with alacrity f!t 1610' to 10595'. I PU 300K. SO to 100K. Establish circulation at 26 gpm. I ( Work pipe w/pumps on and off. 22:00 - 00:00 2.00 I CASE I N STUC LNR1 POH w/pumps on f/11595' to 10898'. staging pumps up slowly ~ ~ ~ to 336 gpm. 100 gpm, 540 psi. 200 gpm, 795 psi. 255 gpm, j I 950 psi. 300 gpm, 995 psi. 350 gpm 1160 psi. Lost 158 bbls fluid to wellbore f/24 hr. period. 7/14/2007 00:00 - 04:00 4.00 CASE ~ N STUC LNR1 POH w/liner f/10898' to 6510'. Pumps on 335 gpm, 425 psi. I Stand back drill pipe. 04:00 - 04:30 0.50 CASE N STUC LNR1 LD Baker cementing head, ZXP liner top packer and Flexlock liner hanger. Pump dry job. 04:30 - 13:30 9.00 CASE N STUC LNR1 POH f/6510' to surface laying down 7" 26# liner 1 x 1. Break out float equipment from shoe track. 13:30 - 15:30 2.00 BOPSU N STUC LNR1 PJSM w/hands. Pull wear ring and install test plug. change out top piqe rams f/7" to 3-1/~" x~" variahla. RU teSt equipment and test top pipe rams to 250/3500 psi low/high I pressure and record on chart. RD and BD test equipment. 15:30 - 16:00 0.50 ~ BOPSU~ N STUC LNR1 Service top drive and rig. 16:00 - 19:30 3.50 BOPSU N RREP LNR1 Change out lower actuator and brakes on top drive. Test ~ ~ same. 19:30 - 20:00 0.50 BOPSUF N STUC LNR1 LD test jt. Install wear ring. 20:00 - 21:30 1.50 CASE i N STUC LNR1 PU BHA # 10 w/MXL-1 Hughes mill tooth bit, NB stabilizer I, w/float, NM XO, ARC, MWD, NM stabilizer, 2 ea. NM spiral drill ~ ~ ~, collar, NM stabilizer, NM spiral drill collar, float/saver sub, ball Printed: 8/14/2007 4:28:49 PM ~ ~ Opera#ions Summary R~ Legal Well Name: 12-05 Common Well Name: 12-05 Spud Date: 10/30/1979 Event Name: REENTER+COMPLETE Start: 6/20/2007 End: 7/3/2007 Contractor Name: NABORS ALASKA DRILLING i Rig Release: 7/31/2007 Rig Name: NABORS 7ES Rig Number: , Date ' From - Tc~ Hours Task Code ~ NPT ~ Phase ' Description o# Operations 7/14/2007 20:00 - 21:30 1.50 CASE I N i STUC LNR1 catcher f/CCV, Weatherford CCV, hydraulic jars, 17 jts. 5" l ~~ HWDP. OAL = 716.45". 21:30 - 23:30 2.00 CASE N i STUC I LNR1 Shallow test MWD at 716' at 350 gpm, 375 psi. and RIH f' 716' to 5629' filling pipe every 3000'. 23:30 - 00:00 0.50 CASE N STUC LNR1 CBU at 5629'. Stage pumps up to 400 gpm, 815 psi. 7/15/2007 00:00 - 02:30 2.50 CASE N STUC LNR1 RIH f/5629' to 8458'. At 5707' taking 8K + tq.to roil past obstruction get past top of window w/stabilizer. At 5779' taking 10K down wt.+ 10K tq. to roll past obstruction and RIH. 02:30 - 03:00 0.50 CASE N STUC LNR1 Circulate. Stage pumps up to to 450 gpm 1388 psi 7K tq. at ~I 140 rpm w/12.8 ppg ECD hardiine. Reciprocate and rotate 140 4 rpm on upstroke, no rotation on downstroke. 03:00 - 04:00 1.00 CASE N ' STUC '; LNR1 ~ RIH f/8458' to 10916'. 04:00 - 07:30 3.50 CASE N i STUC j LNR1 ~ RIH f/10916' to 11422'. Circulate staging pumps up to 500 gpm ~ w/12.8 ppg ECD hardline and RIH w/no rotation on downstroke. j ~ Packoff at 10966'. Backream f/10966' to 10945'. 500 gpm, 1820 psi. 140 rpm 10K tq. Work pipe down to 11422'. 07:30 - 12:00 4.50 CASE N STUC j LNR1 Wash down 400 gpm, 60 rpm, then reaming and backreaming at 500 gpm f/11422' to 11416'. 12:00 - 19:00 7.00 CASE N STUC LNR1 Ream down w/ reduced pump rate 400 gpm, 1200 psi, 60 rpm. Back ream up at 500 gpm, and 140 rpm, 1760 psi. Work various tight hole f/11578' to 11610'. Worked stand f/11600' V11700' w/multiple packoff and top drive stalls f/four hours. Worked pipe f/11700' to 11790' w/very little improvement. 19:00 - 22:00 3.00 CASE N ! STUC li ~NR1 I~ Attempt to POH f/t 1790' wlno pumps. 25K overpuli. PU 265K, ~ I SO 130K, ROT 185K. Back ream , 500 gpm, 140 rpm, 13.5K i tq. Increase flow rate U600 gpm, 2445 psi. POH f/11790' to i 11105'. 22:00 - 23:30 1.50 CASE N I STUC ; LNR1 Pump 11.6 ppg 300 Vis, HI VIS sweep. Saw a small increase in cuttings with the sweep. ~ I 550 m, 2075 si 130 r m on the u stroke, 13.5 K t no 9P P~• p P Q~, rotation on down stroke. Reduce flow rate U500 gpm. 23:30 - 00:00 0.50 CASE N STUC LNR1 POH f/11105' U11011' and displace well f/ 11.6 ppg LSND mud to 122 ppg LSND mud, 250 gpm, 675 psi, 100 rpm, 12.5K tq. 7/16/2007 00:00 - 02:00 2.00 CASE N STUC LNR1 Displace weil f/11.6 ppg LSND mud to 12.2 ppg LSND mud, 250 gpm, 675 psi, 100 rpm, 12.5K, riciprocate pipe, no rotation on down stroke. 02:00 - 02:30 0.50 CASE N STUC ~ LNR1 Record parameters PU 240K, SO 148K. Stage pumps up to i 400 gpm and record pump parameters f/25 gpm to 400 gpm I w/12.2 ppg fluid. 20 bbl/hr losses. 02:30 - 07:00 I 4.50 CASE N ~ STUC LNR1 ! Ream/backream f/ 11011' to TD at 12070'. Ream down in 5' ~ ; ~ increments and backream each increment. 350 gpm, 915 psi. I j ~ ECD = 12.72 ppg. Rotate 100 rpm. Work pipe. 20 bbl/hr i fluid losses. String in MIX II medium. 07:00 - 08:00 1.00 CASE N STUC ( LNR1 Circulate at 350 gpm. 110 rpm, 12K tq. Stop circulation due to 120 bbl/hr fluid losses. 08:00 - 08:30 0.50 CASE N STUC LNR1 Monitor well for losses in static condition. 5 BBL flow back, tapered off to static in 15 mins. 08:30 - 10:30 2.00 CASE N STUC LNR1 Circulate 42 gpm. 110 psi, 50 rpm, 11 K tq. Reduced flow rate to build mud volume to 650 bbls. 10:30 - 22:30 12.00 CASE N STUC LNR1 POH backreaming f/12070' to to 5620'. Stage pumps up at 12070' to 350 gpm, 1090 psi, 140 rpm, 12K tq. Packoff at Printed: 8/14/2007 428:49 PM ~ ~ E~P EXPLORAT(ON' Page f~ Qf 22 Op~~atic~ns Summary R~port Legal Well Name: 12-05 Common Well Name: 12-05 Spud Date: 10/30/1979 Event Name: REENTER+COMPLETE Start: 6/20/2007 End: 7/3/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 7/31/2007 Rig Name: NABORS 7ES Rig Number: ~~ ~a~e ~ Fram - Ta Hours Task Cacie NPT Phase ~~~ D~scri~t~dn of ap~rations -- ' ' _~ ; ' ' , 7/16/2007 10:30 - 22:30 12.00 CASE N STUC i LNR1 i 11815'. Work pipe and ream and back ream. PU 253K SO j ' 150K, ROT 190K. Lost 676 bbls f/first 12 hrs of day. Continue C backreaming to 10143'. 350 gpm, 965 psi, 140 rpm, 12K tq. ; pull pipe at 12'/min. w/ROT wt. 185K. Increase pulling speed j I at 11240' to 25'/min. Increase pump rate to 400 gpm 1190 psi. ( continue backreaming, increase pump rate to 450 gpm, 1412 i psi at 10050' ECD = 12.82 ppg, w/244 bbl/hr loss rate. i Continue backreaming to 5850' w/no problem. Shut down ( rotation w/stabilizer at window at 5702'. Continue pumping out of hole to window at 5702' and pull above at 5620'. 22:30 - 23:00 0.50 CASE N STUC LNR1 Circulate 467 bbls at 5620 reciprocating and rotating pipe. See small amount shale cuttings, continuous unloading of of G-seal ~ LCM during CBU x 1. 580 gpm, 1480 psi, 90 rpm, 3K tq. Monitor well when fluid clean. 46 bbl/hr static losses. 23:00 - 00:00 1.00 CASE N STUC LNR1 PJSM w/hands. Slip and cut 117' of drilling line. Service topdrive. Inspect draw works and brakes. Clean suction screens on pumps. 3106 bbl loss to formation f/24 hrs. 7/17/2007 00:00 - 02:30 2.50 CASE N STUC LNR1 POH f/ 5,620' md to BHA at 716' md. Mud wt= 122 ppg. 02:30 - 03:30 1.00 CASE N STUC LNR1 PJSM. LD HWDP and Cleanout BHA #10. Clean & clear rig floor. 03:30 - 05:30 2.00 BOPSU N STUC LNR1 Changeout rams f/ 3-1/2" x 6" to 7" to run liner casing. Test rams 250/3500 psi low igh pressure. onitor well during process and fill via secondary kill line/charge pump down IA as required to maintain fluid level,losses of 70 BPH . 05:30 - 06:30 1.00 CASE N STUC LNR1 I PJSM. Install wear bushing. RU to RIH w/7" 26# L-80 BTC-M ; drilling liner w/Tesco torque rings installed. 06:30 - 15:00 8.50 CASE N STUC LNR1 I, P/U & Run 7" Driiling liner (check floats) to 5,674' md . 12,500 i fUlbs of make up torque. Up wt= 145K, SOW= 130K. i Best-O-Life NM pipe dope in use on 7" Drilling liner. 15:00 - 15:30 0.50 CASE N STUC LNR1 i Break circulation @ 2 bpm, 110 psi, pump 14 bbls. Install block blower hose. C/O elevators to YC's. Monitor well -Static. 15:30 - 16:30 1.00 CASE N STUC LNR1 Continue to P/U 7" Drilling liner to 6,465' md. 16:30 - 18:00 1.50 CASE N STUC LNR1 M/U Liner hanger packer. Break circulation Q 3 bpm, 190 psi, Rot wt= 150 K, fiot up= i 50K, Rot Down= 148K, 5.5K Tq. Mud wt= 12.2 PP9~ 18:00 - 23:00 5.00 CASE N STUC LNR1 Trip in hole w/ 7" Drilling liner on 5" DP. Break circulation @ 7,984' md, 2 bpm, 190 psi, Up wt= 190K, SOW= 145K. Continue to RIH w/ 7" Drlg Liner, fill pipe every 5 stds. Break circulation @ 10,700' md, 1 bpm, 270 psi, PU wt= 235K, i SOW= 145K. Continue to RIH.Average losses while running 7" driliin liner = 22 b h. 23:00 - 00:00 1.00 CASE P I LNR1 P/U cement head, wash to bottom @ 41 gpm, 375 psi, Tag bottom C~ 12,070' md. Stage up pumps, reciprocate pipe. P/U wt= 275K, SOW= 145K. 7/18/2007 00:00 - 01:30 1.50 CEMT P LNR1 Circulate and condition mud. Stage pumps up to 5 bpm / 630 psi. Reciprocate pipe. PU wt= 240K, SOW= 145K. 01:30 - 02:30 1.00 CEMT P LNR1 Tag TD @ 12,069' md. P/U 2 ft off bottom. R/U cement line and manifold. Loss of returns, reduced pump rate to 1.5 bpm / 155 psi. Attempt to work pipe to 25K overpull. Stopped reciprocation of pipe. PJSM w/ WSL, TP, SLB, Baker, M-I and Rig crew. Returns back at 10 %. ( 1 bbl gain for 3 bbls pumped). 02:30 - 04:00 1.50 CEMT P LNR1 Line up on cementing unit. Pump 5 bbls of water and PT lines Printed: 8/14/2007 4:28:49 PM ~ ~ BP EXPI Qperat~ons Si Legal Well Name: 12-05 Common Well Name: 12-05 Event Name: REENTER+COMPLETE Contractor Name: NABORS ALASKA DRILLING I Rig Name: NABORS 7ES Date Frorn - To Hours Task Code NPT P 7/18/2007 I 02:30 - 04:00 I 1.50 ~, CEMT I P LN 04:00 - 05:00 05:00 - 07:00 1.00 CEMT P LN 2.00 CEMT P LN 07:00 - 08:00 I 1.00' CEMT P LN 08:00 - 12:00 I ~ 4.00 I CEMT P LN 12:00 - 12:30 '~, 0.50 CEMT P LN 12:30 - 14:30 ~~ 2.00 CEMT P LN 14:30 - 15:30 i 1.00 CEMT P j LN 15:30 - 16:00 ! 0.50 CEMT P LN 16:00 - 18:30 I 2.50 CEMT P LN 18:30 - 20:00 ! 1.50 CEMT P LN 20:00 - 20:30 '~ 0.50 CASE P TI 20:30 - 21:30 I 1.00 CASE P TI 21:30 - 22:00 I 0.50 CASE P TI 22:00 - 00:00 I 2.00 CASE P TI 7/19/2007 00:00 - 06:30 06:30 - 07:00 I 07:00 - 08:30 08:3~ - 09:00 6.50 CASE P 0.50 CASE P 1.50 CASE P 0.501 CASE I P 'I~N - ~- - ---~ Spud Date: 10/30/1979 Start: 6/20/2007 End: 7/3/2007 Rig Release: 7/31 /2007 Rig Number: hase Description of Opera~ions R1 to 5000 psi. Displace water to pits w/ Mud Push. Pump 50 bbls i of Mud Push @ 11.8 ppg. Pump 200 bbls of Lead cement @ ~ 11.7 ppg. Returns at 17 %( 2.5 bbi gain for 5 btrls ( pumped).Pump 20 bbls of taii cement @ 15.8 ppg. Drop wiper ; dart. Pump 5 bbis of water to wash lines (cement on top of I plug). R1 ~ Displace cement w/ 322 bbls of 12.2 ppg mud. Plug bumped. R1 ~ Pressure up to 4240 psi to set hanger. Set down to 50K. Bleed off pressure. Check floats. P/U 6 ft, Set down to 50K (perform 2 times). Repeat same while rotating at 20 RPM (perform 2 times). Pressure up to 1000 psi. P/U until pressure bleeds off. Wash up Tie back sleeve. Circulate out contaminated mud. R1 UD cement head and circulating lines. B/D lines. R1 Pump dry job. POH, L/D DP, make service break. R1 UD running tool. R1 RIH w/ 5" DP to 5,200' md. Monitor well - Static. Mud wt= 12.2 Pp9~ R1 POH, UD DP f/ 5,200' md to 3,778' md. R1 RIH from Derrick to 4,530' md. R1 POH f/ 4,530' md, UD DP. Clean and clear floor. R1 Change out Top Drive saver sub U HT-40. C/O Top Drive gripper blocks and dies. EB1 Puil Wear bushing. R/U casing test equipment. EB1 PJSM. Test casing to 3500 psi / 30 min - Pass. EB1 ( PJSM. R/U Torque Turn equipment EB1 ( Run 7" 26 Ib L-80 TC II Tie back liner. M/U mule shoe, float equipment, check floats. Optimum torque 10,100 fUlbs. Utilize Jet Lube Seal Guard pipe dope. Centalizers 1 per joint. EB1 Continue to P/U and run 7" Tie back finer to 5,539' md EB1 Change to long casing bales. EB1 Run in hole with 7" Tie- back to 5,502' md. Circulate bottoms up at 8 BPM / 725 psi. PU wt 145K. SO wt. 125K. Hold pre-job meeting with rig and cementing crews. EBi Tag Tie-back sleeve at 5,539' md. -Make up cement head. -Pressure up to 200 psi to check seals - OK. -Bieed off pressure. -Pick up 7' to 5,532' md to expose ports. B1 Pump 131 bbls fresh water at 6.5 BPM / 670 psi. 61 Switch to cementing unit. -Pump 10 bbls fresh water. -Pressure test lines to 4000 psi - OK. -Pump 20 bbls. 13 ppg mud push (start @ 09:50). ~-Drop bottom plug. (No indication of plug leaving cement head). ~-Pump 162 bbl. 15.8 ppg ciass "G" cement. (Start batch mixing j @ 10:00). -Drop top plug (Good indication of plug leaving head). -Pump 5 bbl. water to wash cement lines. EB1 Switch to rig pumps. -Displace with 12.2 ppg LSND mud. -Shut annular and divert returns to cutting tank when mud push at surface. TI TI TI TI 09:00 - 09:30 ~, 0.50 CEMT P TIE 09:30 - 11:00 ~~ 1.50 CEMT P TIE 11:00 - 11:30 I 0.50I CEMT I P I I T~ Printed: 8/14/2007 4:28:49 PM ~ ~ E~P'. EXPLC7R,4TION Page 16 af 22 ' Uperations Summary Report Lega! Well Name: ~2-05 Common Wel~ Name: 12-05 Spud Date: 10/30/1979 Event Name: REENTER+COMPLETE Start: 6/20/2007 End: 7/3/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 7/31/2007 Rig Name: NABORS 7ES Rig Number: Qat~ From - To Hours~Task Code NPT Phase Description of Operations 7/19/2007 11:00 - 11:30 0.50 ~ CEMT P TIEB1 - -Bump plug at 206 bbis away. i -Lower Tie-back sleeve into seals. ~ -20 bbls cement back to surface. 11:30 - 12:30 ~, 1.00 '~, BOPSU P TIE81 Flush stack and circulating lines. N/D BOPs. 12:30 - 13:00 ~ 0.50I BOPSU P TIEB1 Set Emergency slips with 95K. 13:00 - 15:00 2.00'I BOPSU P TIEB1 R/U WACHS casing cutter. Cut 7° 26 Ib L-80 casing. Cut off jt 28.05' of jt # 137 15:00 - 17:30 2.50 BOPSU P TIEB1 N/U Tbg spool. Test 7" Pack off, Ring gasket and Tbg spool U 4300 psi @ 80 % Of casing collapse pressure f/ 30 minutes. 17:30 - 20:00 2.50 BOPSU P TIEB1 PJSM w/ crew. N/U BOPs. 20:00 - 21:00 1.00 i BOPSU P TIE61 PJSM w/ crew. Change Rams from 7" to 3 1/2" X 6" variables. 21:00 - 00:00 3.001 BOPSU P TIE61 R/U & test BOPs to 250 psi low & 3500 psi high (3 1/2" x 6" & 2 7/8" x 5" variables, Shear rams and Annular preventer). ~ AOGCC witness waived by John Crisp. Witness on location ~ ; W SL- Dan Shearer & TP- Biff Perry. 7/20/2007 00:00 - 02:30 I 2.50 ~, BOPSUF~ P TIEB1 Continue BOP tests. Test with 4" & 4 1/2" test jts. AOGCC i ' (John Crisp) waived witness of test. WS~ Dan Shearer and TP Biff Perry did witness test. - PASS 02:30 - 03:00 0.50 BOPSU P TIEB1 Clean and clear Rig tloor. Set wear bushing. 03:00 - 03:30 0.50 DRILL P TIEB1 P/U & M/U 6 1/8" Bit & BHA. 03:30 - 08:30 5.00 DRILL P TIEB1 P/U 4" DP. Single in hole with BHA U 5,386' md. Install blower hose. Wash down & tag cement @ 5,460' md. CBU f/ 130 bbis. 08:30 - 09:00 0.50 DRILL P TIE61 PJSM w/ crew. R/U & test Liner Tie-back to 3500 psi f/ 5 minutes - PASS. R/D test equipment. 09:00 - 12:30 3.50 ~ DRILL P TIEB1 Drill cement f/ 5,460' md to 5,501' md. Drill up Plug, Landing i collar and Float collar f/ 5,501' md to 5,525' md. GPM= 230, Psi= 745, RPM= 80, Tq off= 1.5K, Tq on= 2.5K, WOB= ; 15-20K, PU wt= 100K, SOW= 90K, ROT wt= 95K. Cautiously I ; ream Tie-back area several times. ' ' 12:30 - 19:30 7.00 ~ DRILL P TIE61 md to 11,825 Continue to single in hole w/ DP f/ 5,525 md. ; Wash down f/ 11,825' md to 11,976' md. Tag cement @ '~ 11,976' md. Circulate bottoms up and condition mud. 19:30 - 20:30 1.00 DRILL P TIEB1 PJSM. R/U & test Liner and Tie-back U 3500 psi f/ 30 minutes - PASS. R/D test equipment and blow down lines. 20:30 - 00:00 3.50 DRILL P TIEB1 Drili cement f/ 11,976' md to 12,056' md @ GPM= 200, Psi= 1165, RPM= 80, Tq off= 6K, Tq on= 7.5K, PU wt= 175K, SOW= 120K, ROT wt= 145K. 7/21/2007 00:00 - 01:30 1.50 DRILL P TIEB1 Drill out 7" liner to 12,056' md. Displace to new 8.4 ppg Flo-Pro. GPM= 260, Psi= 1130. 01:30 - 03:00 1.50I DRILL P TIE61 Continue to drill out f/ 12,056' md to 12,070' md. '~ - Drilled Shoe track & 4 ft of Rathoie to 12,070' md.. I ; GPM= 240, Psi= 1165, Tq off= 4.5K, Tq on= 7K, WOB= 15K, ~ Up wt= 180K, SOW= 135K, ROT wt= 145K. 03:00 - 04:00 1.00 i DRILL P TIE61 CBU, GPM= 250, Psi= 1032. SPR @ 12,070' md 8,713' tvd. - Pump # 1@ 2 bpm / 580 Psi. Q 3 bpm / 700 Psi. - Pump # 2 @ 2 bpm / 560 Psi. @ 3 bpm / 710 Psi. 04:00 - 08:30 4.50 DRILL P TIE61 POH for new drilling assy f/ 12,070' md to 130' md. Mud wt in= 8.4 ppg / Mud wt out= 8.45 ppg. 08:30 - 09:00 0.50 DRILL P TIEB1 Rack back collars, UD BHA (Bit & Stabilizer). 09:00 - 11:00 2.00 DRILL P PROD1 P/U & M/U 6 1/8" Bit & BHA U 253' md. 11:00 - 13:30 2.50 DRILL P PROD1 Run in hole picking up DP from pipe shed f/ 253' md to 1,206' I ~i md. Shallow test MW D@ 245 gpm / 775 psi. Continue to run ~ ~ in hole picking up DP to 2,355' md. ~ Printed: 8/14/2007 4:28:49 PM ~ ~ BP EXPLORA71C7N ' Page t~ of 22 Operatians Summary Repc~rt Legal Well Name: 12-05 Common Well Name: 12-05 Event Name: REENTER+COMPLETE Contractor Name: NABORS ALASKA DRILLING I Rig Name: NABORS 7ES I I~at~? ' Frnm - i"~ I Hnnrs I Task I C;nrla I NPT ( 7/21/2007 13:30 - 17:00 3.50 DRILL P ~ PRO 17:00 - 18:00 1.00 DRILL P PRO 18:00 - 19:00 1.00 DRILL P PRO 19:00 - 19:30 0.50 DRILL ~ P ~ PRO 19:30 - 00:00 4.501 I DRILL ( P i ~ PRO 7/22/2007 100:00 - 05:30 I 5.501 DRILL I P I I PRO 05:30 - 06:30 1.001 DRILL ~ P ~ PRO 06:30 - 08:30 2.00 DRILL i P ~ PRO 08:30 - 13:00 4.50 DRILL P 13:00 - 13:30 0.50 DRILL P 13:30 - 14:30 1.00 DRILL P 14:30 - 18:00 3.50 DRILL N 18:00 - 18:30 0.50 DRILL P ~ PRO 18:30 - 19:30 1.00 DRILL P PRO 19:30 - 21:00 1.50 DRILL ~ P PRO 21:00 - 00:00 3.00 DRILL I I P PRO 7/23/2007 100:00 - 02:30 I 2.501 DRILL I P I I PRO 02:30 - 03:00 ~ 0.50 DRILL P PRO 03:00 - 03:30 0.50 DRILL P PRO 03:30 - 04:00 0.50 DRILL P PRO 04:00 - 04:45 0.75I DRILL P PRO 04:45 - 05:00 025 DRILL P PRO 05:00 - 12:00 7.00 DRILL P PRO 12:00 - 23:30 I 11.501 DRILL i P I ': PRO Spud Date: 10/30/1979 Start: 6/20/2007 End: 7/3/2007 Rig Release: 7/31/2007 Rig Number: ~se Description of Operations D1 Trip in hole w/ 4" DP from the derrick to 12,070' md. Fill pipe every 25 stands. D1 I Drill f/ 12,070' md to 12,090' md. GPM= 265, Psi= 1660. D1 ~ Circulate and condition Mud for FIT. Pumped 460 bbis of Mud. D1 Pull up into 7" drilling liner (12,064' md). Perform 10 minute FIT test to a 10.0 ppg EMW. R/D and blow down lines. D1 Drill ahead f/ 12,090' md to 12,202' md. GPM= 282, Psi on= 1960, Psi off= 1780, PU wt= 185K, SOW= 135K. SPRs taken @ 12,066' md / 8,712' tvd. Mud wt= 8.45 ppg. Shaker screens 230s. D1 Drill ahead f/ 12,202' md to 12,380' md. Circulate hole clean. -W06=30K, GPM= 281, Psi on= 2000, Psi off= 1805, up wt= 187K. -SOW= 130K, AST= 4.42 hrs, Bit hrs= 8.24, Jar hrs= 55.5 SPR @ 12,380' md / 8,724' tvd. -Pump # 1, 2 bpm = 750 psi / 3 bpm = 880 psi. -Pump # 2, 2 bpm = 725 psi / 3 bpm = 875 psi. D1 Pump out of hole f/ 12,380' md to 12,066' md. GPM= 250, Psi= 1500. D1 Drop ball @ 12,066' md CCV opened @ 2200 psi. CBU @ GPM= 350, Psi= 1440. Monitor well - Static. Pump dry job. POH f/ 12,066' md to 2,929' md. Mud wt in= 8.5 ppg. Mud wt out = 8.55 ppg. Incorrect displacement. Stop. Monitor weil - Static. PON f/ 2,929' md to 443' md. Equalizer to Pit # 4 was inadvertintly shut. 10 bbls of drilling ~ fluid (FLO-PRO) was spilled into pump room. Spill was contained. Fluid was cleaned up and returned to the pits. D1 Drop 1.76" ball to close CCV. Closing Psi was 1600 psi. Di POH UD BHA. D1 P/U & M/U Bit & BHA (Motor, MWD, ADN). MWD to Load source. D1 RIH U 764' md, MWD-Shallow test tools GPM= 280, Psi= 860. -Continue to trip in hole U 6,881' md. -Shaker screens 230s. D1 Continue to RIH f/ 6,881' md to 12,045' md. Up wt= 175K, SOW= 145K. D1 PJSM. Cut & slip 129 ft of drilling line. D1 Adjust brakes, service Top Drive. D1 RIH f/ 12,045' md to 12,380' md. D1 MWD - MAD Pass out of the hole f/ 12,380' md to 12,067' md Q 230 gpm / 300 fph. D1 RIH back to bottom f/ 12,067' md to 12,380' md D1 directionaily Drill ahead f/ 12,380' md to 12,453' md. WOB= 10K, GPM= 284, Psi on= 1995, Psi off= 1903, Up wt= 185K, SOW= 135K. SPRs taken Q 12,427' md / 8,724' tvd. -Pump # 1- 2 bpm = 725 psi, 3 bpm = 880 psi. -Pump # 2- 2 bpm = 760 psi, 3 bpm = 890 psi. Mud wt = 8.5 ppg. D1 Directionally Drill f/ 12,453' md to 12,614' md. W06= 10K, - GPM= 280, Psi on= 2060, Psi off= 1910, PU wt= 190K, SOW=130K. Printed: 8/14/2007 4:28:49 PM PROD1 PROD1 PROD1 HMAN PROD1 • ~ ' BP` EXPLQRATION Page 18 at 22 Uperations Summary Report Legal Well Name: 12-05 Common Well Name: 12-05 Spud Date: 10/30/1979 Event Name: REENTER+COMPLETE Start: 6/20/2007 End: 7/3/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 7/31/2007 Rig Name: NABORS 7ES Rig Number: Date Frorn - To Haurs Task Code NPT Phase Description of ~perations -- ~ 7l23/2007 23:30 - 00:00 0.50 DRILL P PROD1 ; Drill ahead rotating f/ 12,614' md to 12,645' md. WOB= 10K, ! GPM= 280, Psi on= 2060, Psi off= 1910, PU wt= 190K, SOW= ~ I ! 130K, RPM= 40, ROT wt= 143K, Tq on= 6K, Tq off= 4.5K. !-Bit hrs= 9.57, Total Bit hrs= 14.10, ART= 0.9, AST= 8.67. ' i SPRs taken Q 12,619' md / 8,723' md. i-Pump # 1- 2 bpm = 700 psi, 3 bpm = 860 psi. I ;-Pump # 2- 2 bpm = 660 psi, 3 bpm = 800 psi. ~ ; Mud wt = 8.5 ppg. Shaker screens = 230s. 7/24/2007 00:00 - 12:00 12.00 I DRILL P ; PROD1 I Directionally Drill ahead f/ 12,645'md to 12,900' md. ~ ~ I, -WOB= 10, GPM= 280, Psi on= 2080, Psi off= 1903. 1 I-Tq on= 7K, Tq off= 6K, Up wt= 192K, SOW= 130K, ROT wt= 150K. ( ~ ~ - RPM= 80. -Mud wt= 8.55 ppg. ~ ; SPRs taken @ 12,840' md / 8,725' tvd. ~ ! j -Pump # 1@ 2 bpm= 730 psi, 3 bpm= 880 psi. ' i -Pump # 2@ 2 bpm= 710 psi, 3 bpm= 820 psi. I Pumped a Lo-Hi Sweep @ 12,713' md with a significant li increase in cuttings being returned. I MUD swap Q 12,900' md: displace in 580 bbls / 8.4 ppg of new I Flo-Pro SF / Displace out 580 bbls of 8.65 ppg old Fio-Pro. 12:00 - 00:00 12.00 DRILL P PROD1 I Directionally Drill f/ 12,900' md to 13,224' md - ;-W06= 10, GPM= 280, Psi on= 2100, Psi off= 1950. '! -Tq on= 6.5K, Tq off= 6K, Up wt= 190K, SOW= 135K, ROT wt= ! 147K. ;- RPM= 80.- Mud wt= 8.45 ppg. ~ Pumped a 40 bbl Lube pill @ 13,040' md (40 bbls / 8.45 ppg / 46 vis @ 5% Low Torque, 18.75 ppb Alipine Drilling beads, course) - w/ noticeable increase in drilling rate, sliding became easier. SPRs taken @ 13,067' md / 8,729' tvd. - -Pump # 1 Q 2 bpm= 730 psi, 3 bpm= 880 psi. -Pump # 2@ 2 bpm= 710 psi, 3 bpm= 820 psi. Mud wt= 8.45 ppg. Shaker screens= 230s. 7/25/2007 00:00 - 12:00 12.00 DRILL P PROD1 Directionally Drill ahead f/ 13,224' md to 13,724' md. -W06= 10, GPM= 271, Psi on= 2270, Psi off= 2123. -Tq on= 7K, Tq off= 5K, Up wt= 190K, SOW= 135K, ROT wt= 150K. I- RPM= 80. -Mud wt= 8.6 ppg. ~ SPRs taken @ 13,576' md / 8,749' tvd. i-Pump # 1 Q 2 bpm= 780 psi, 3 bpm= 1000 psi. '; -Pump # 2@ 2 bpm= 780 psi, 3 bpm= 980 psi. 12:00 - 22:30 10.50 DRILL P PROD1 ; Directionally Drill f/ 13,724' md to 14,147' md / 8,755' tvd.-TD. i-WOB= 10, GPM= 280, Psi on= 2410, Psi off= 2315. j-Tq on= 8K, Tq off= 6K, Up wt= 190K, SOW= 132K, ROT wt= ~i 145K. ~ i- RPM= 80.- Mud wt= 8.45 ppg. ~ ( Pumped a 40 bbl Lube pill @ 13,900' md (40 bbls / 8.55 ppg / ~ 44 vis @ 10% Low Torque, 18.75 ppb Alipine Drilling beads) - w/ noticeable increase in drilling rate and on bottom time ~ (50%), sliding became easier. I Pumped a 40 bbl Lube pill Q 14,045' md (40 bbls / 8.6 ppg / 44 ~ Printed: 8/14/2007 4:28:49 PM ~ ~ ' BP' E~ Qperat~vn5 Legal Well Name: 12-05 Common Well Name: 12-05 Event Name: REENTER+COMPLETE Contractor Name: NABORS ALASKA DRILLING Rig Name: NABORS 7ES Date ~ From - To Hours Task Cc~de NPT 7/25/2007 12:00 - 22:30 10.50 DRILL P 22:30 - 23:00 I 0.50 DRILL P 23:00 - 00:00 1.00 DRILL P 7/26/2007 100:00 - 10:30 i 10.501 DRILL I P 10:30 - 11:30 I 1.001 DRILL I P 11:30 - 12:00 ~ 0.50 DRILL P I 12:00 - 16:30 ~ 4.50 DRILL P 16:30 - 18:30 I 2.001 DRILL I P 18:30 - 19:30 1.00 CASE P 19:30 - 23:00 3.50 CASE P 123:00 - 00:00 ~ 1.00 CASE P ( 7/27/2007 i 00:00 - 08:30 8.50 CASE P 08:30 - 11:30 I 3.001 CASE I P 11:30 - 12:30 I 1.001 CEMT I P ION Spud Date: 10/30/1979 Start: 6/20/2007 End: 7/3/2007 I Rig Release: 7/31/2007 Rig Number: PFiase Description of l~~era#~c~ns -+'- --- _ PROD1 'vis @ 10% Low Torque, 18.75 ppb Alipine Drilling beads) - w/ I~ noticeabe increase in driliing rate and on bottom time. ~ SPRs taken @ 14,147' md / 8,755' tvd.-TD. -Pump # 1@ 2 bpm= 800 psi, 3 bpm= 980 psi. -Pump # 2@ 2 bpm= 800 psi, 3 bpm= 960 psi. -Mud wt= 8.6 ppg. Shaker screens= 230s. PROD1 i At TD 14,147' md, Circulate 208 bbls, acquire surveys as Ineeded. PROD1 ~ MW D MAD Pass f/ 14,147' md to 13,950' md. Log at 300 fph. i-GPM= 280, Psi= 2190, RPM= 80, Tq= 6.SK. ~- PU wt= 190K, SOW= 132K, ROT wt= 145K. j-Mud wt= 8.6 ppg. Shaker screens= 230s. PROD1 i Continue MAD Pass from 13,950' md to 12,100' md @ 300 fph. -GPM= 280, Psi= 2075, RPM= 80, UP wt= 180K, -SOW= 145K, ROT wt= 145K. MAD Pass f/ 12,633' md to 12,100' md with no pipe rotation. - Monitor well for 15 minutes - Static. PROD1 Pull into 7" Csg shoe @ 12,066' md. Drop 1.76" ball to open j CCV. Pump 5 bpm- CCV opened at 2100 psi. Circulate HV i Sweep at 480 gpm / 2160 psi - Good results. - Monitor well - Static. Pump Dry Job. PROD1 ~ POH f/ 12,066' md to 11,47'1 md. Mud wt in= 8.6 ppg, Mud wt out= 8.6 ppg. PROD1 Continue to POH f/ 1 i,471' md to 288' md. Drop 1.76" ball to close CCV. Pump @ 2 bpm. Close CCV at 1715 Psi. Confirm shut, Circulate 4 bbls. PROD1 PJSM. L/D BHA, recover two 1.76" balls from ball catcher. Pull and UD MW D source. Continue to L/D BHA. Clean and clear Rig fioor. Monitor welf - Static RUNPRD PJSM. R/U Liner running equipment. RUNPRD ~ M/U Shoe track, check Fioats, RIH with 4.5" 12.6# L-80 IBT-M I Solid Liner to 2,281' md. Optimum make-up torque 3400 fUlbs. ~ Utilized Best-O-Life pipe dope. MU Baker HMC Liner hanger. i PU wt= 50K, SOW= 50K. RUNPRD ~, RIH with 4" driil pipe to 2,376' md. Circulate 52 bbls at 4.5 bpm / 200 Psi. Mud wt= 8.6 ppg. Shaker screens= 230s. RUNPRD RIH w/ 4 1/2" 12.6# L-80 IBT-M Liner f/ 2,376' md to 12,066' md. -Fill pipe every 10 stds. -At 5,150' md, CBU to remove air trapped in mud. -CBU @ 168 gpm / 433 psi. ~-Mud losses since 00:00 = 1 bbl. Mud wt 8.6 ppg. ~-At 12,066' md (Csg shoe) Circulate 191 bbis @ 211 gpm / ~ 1050 psi. -Up wt= 185K, SOW= 135K. RUNPRD Continue to RIH w/ 4 1/2" liner to 14,147' md (Tag bottom). - P/U 2 ft to 14,145' md. -P/U & M/U Cement head on a single. -CBU X 2@ 210 gpm / 1215 psi. ~-PJSM w/ WSL, TP, SLB & Rig crew, discuss cementjob. RUNPRD ~ PT cement lines to 4000 psi-OK. Printed~ 8/14/2007 4:28:49 PM • ~ ~P' E~CPLQRATfC7N': Page 2c3 ot 22 Qpe:ratior~s Summary Report Legal Well Name: 12-05 Common Well Name: 12-05 Spud Date: 10/30/1979 Event Name: REENTER+COMPLETE Start: 6/20/2007 End: 7/3/2007 Contractor Name: NABORS A~ASKA DRILLING I Rig Release: 7/31/2007 Rig Name: NABORS 7ES Rig Number: Date Frorn - To Hours Task ~ Gode NPT Phase Description af a~erations , , 7/27/2007 ~ 11:30 - 12:30 ~ 1.00 CEMT I P RUNPRD -Start pumping 30 bbls of Mud Push @ 11.7 ppg / 5 bpm / 750 i I ~I i psi. ~ -Pump 58 bbls of 15.8 ppg Cement @ 5 bpm / 1600 psi. ~ I j -Latched Liner wiper plug Q 1227 psi 117 bbls. ~I -Sheared wiper plug, pumped down @ 5 bpm / 1600 psi for 149 j bbls. I NOTE: Displace cement with a 35 bbl Flo-Pro SF Perf pill ; ~-And 116 bbis of 8.6 ppg Drilling mud. 12:30 - 13:00 ; 0.501 CEMT P RUNPRD Brought pressure up to 2500 psi. '; !, -SOW= 135K. Set down 50K. Up wt= 185K, SOW= 135K. -Pressure up to 4000 psi to confirm Set of Hydraulic setting tool. i -Release running tool, neutralize pusher tool. -Bieed off pressure & check Floats. I -P/U 7 ft to expose Dog sub, lost 25K. -Set down on ZXP Paaaacker 50K. 13:00 - 15:00 2.00 I CEMT P RUNPRD Pressure up to 500 psi. I ~ -P/U until pressure dropped off. -Pull tools out of Liner top. ~, -CBU @ 300 gpm / 2050 psi. 15:00 - 16:00 '~ 1.001 CEMT P 16:00 - 18:00 I 2.00 I CEMT P 18:00 - 18:15 ~ 025 ~ CEMT P 18:15-19:15 ~ 1.OO~ CEMT P 19:15 - 23:15 4.00 ~ CEMT P 23:15 - 00:00 0.75 i CEMT P 7/28/2007 I 00:00 - 02:00 I 2.00 I CEMT I N 02:00 - 02:30 0.50 ~ CEMT P 02:30 - 05:00 2.50 CEMT P 05:00 - 05:30 0.50 CEMT P 05:30 - 06:30 1.00 CEMT P 06:30 - 07:00 I 0.50 PERFO P 07:00 - 09:00 ~ 2.00 PERFO P 09:00 - 10:00 I 1.00 I PERFO P 10:00 - 12:00 2.001 PERFO~ P 12:00 - 13:00 1.00 I PERFO P 13:00 - 18:30 ~ 5.50 i PERFO P 18:30 - 19:15 ~ 0.75I PERFOBI P RUNPRD PJSM. UD Cement head & blow down lines. RUNPRD Diplace weli to 8.5 ppg Seawater Q 428 gpm / 2302 psi. -Pump 100 bbls H20 / Safe-Surf-O. -Over displace Seawater by 378 bbls for a clean displacement. RUNPRD Monitor well. POH f/ 11,880' md to 11,438' md. RUNPRD Clean Possum Belly, Shakers & Trip Tank. RUNPRD POH f/ 11,438' md to 2,353' md. RUNPRD PJSM. Cut 81ft of Drilling line. Seawater wt= 8.5 ppg. Shaker screens= 230s. RREP RUNPRD During Slip & cut operation; -Had difficulty removing drilling line retainer anchor piate. An Ailen head bolt was stripped. Welder called out. Rig repair-Work on Draw-works. RUNPRD Rig service. Lubricate Rig & Top Drive. RUNPRD VD DP f/ 2,353' md to 65' md. RUNPRD UD Liner running tools. Clean & clear Rig floor. RUNPRD R/U for casing test. -Test 7" casing and 4 1/2" Production Liner to 3500 psi / 30 minu es - Pass. -While testing held PJSM for Perf Guns. OTHCMP WU to run Perforating Guns. OTHCMP P/U 2 7/8" Perforating Guns to 777' md. OTHCMP Clear Rig floor of Perforating Gun running tools. -R/U. for 2 7/8" PAC drili pipe. OTHCMP P/U & RIH 1546 ft of Pac pipe (50 jts) to 2,323' md. OTHCMP R/D PAC drill pipe running tools. OTHCMP RIH w/ Perf Guns & 2 7/8" PAC pipe on 4" DP. -f/ 2,323' md to 14,058' md (Landing collar) OTHCMP P/U to 14,050' md. PJSM. Cycle pumps & Fire Guns. -Perf f/ : 13,300' to 13,610' md (310') w/ Power Jet charges. -13,730' to 13,770' md (40") w/ Power Jet charges. 13,770' to 14,050' md (280') w/ Power Jet Omega charges. Printed: 8/14/2007 4:28:49 PM • ~ BP' EXPLC7RATION ' Page 21 of 22 ; Operations Surt~mar~ R~por# Legal Well Name: 12-05 Common Well Name: 12-05 Spud Date: 10/30/1979 Event Name: REENTER+COMPLETE Start: 6/20/2007 End: 7/3/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 7/31/2007 Rig Name: NABORS 7ES Rig Number: ' Date ' From - To Hours Task , Code NPT Phase Description of Operations 7/28/2007 18:30 - 19:15 ' 0.75 PERFO P OTHCMP - All Perfs are: 6 SPF @ Random orientation. ~ i -Monitor well 10 minutes (4 bbls loss). ' 19:15 - 20:00 0.75 PERFO P OTHCMP POH above Perfs to 13,290 md. 20:00 - 20:30 ~ 0.50 PERFO P OTHCMP CBU @ 339 gpm / 1722 psi. ~ -No Gas or Oil noted on Bottoms up. 20:30 - 21:00 i 0.50 PERFO P OTHCMP Monitor well 10 minutes. - Static. -Blow down Top Drive & Kill Line. 21:00 - 00:00 3.00 PERFO P OTHCMP PJSM. POH. UD 4" DP f/ 13,290' md to 10,550' md. i Losses while tripping= 1 bph. Total losses= 8 bbis. ~ Seawater wc= 8.5 ppg. Shaker screens= 230s. 7/29/2007 00:00 - 07:00 i 7.00 PERFO P OTHCMP UD 4" DP f/ 10,550' md to 2,360' md. ~ -RIH 8 stds f/ 2,360' md to 3,092' md. ! -Continue to POH UD DP f/ 3,092' md to 2,328' md. 07:00 - 07:30 i 0.50 PERFO P OTHCMP Break out XO subs, C/O Floor equipment to 2 7/8". 07:30 - 09:00 i 1.50 PERFO P OTHCMP POH UD 2 7/8" PAC pipe f/ 2,328' md to 777' md (50 jts). 09:00 - 10:00 1.00 PERFO P OTHCMP R/D 2 7/8" PAC equipment. R/U to VD Perf Guns. -PJSM w/ WSL, TP, SLB and Rig crew. -Discuss Gun handling & safety. 10:00 - 13:00 3.00 PERFO P OTHCMP POH L/D Perforating Guns f/ 777' to surface. I -All Guns fired.,~ 13:00 - 15:15 2.25 I RUNCO P RUNCMP Pull wear bushing. j -Dummy run Tbg hanger. -R/U to run 4.5" 12.6# 13CR Vam Top Completion Tbg- I - w/ Compensator and Torque Turn equipment and computer. 15:15 - 00:00 8.75 ~ RUNCOt ~P RUNCMP PJSM. ~ I , -Run 4.5" completion Tbg to 5,913' md. I ; -Utilize Jet Lube Seal Guard pipe dope. ~ i -Optimum Torque 4440 ft/Ibs. i ~ -Baker Lok all threads below Baker S-3 packer. -Seawater losses today= 43 bbls, total loss= 51 bb~s. ~ ~ Seawater wt= 8.5 ppg. Shaker screens= 230s. 7/30/2007 00:00 - 08:00 8.00 ~ RUNCO~ P RUNCMP Continue to run 4 1/2" 13CR 12.6# Vam Top completion Tbg to I ~I 11,812' md. 08:00 - 10:00 2.00 ~ RUNCOI~ VIP RUNCMP Taqgged up bottom of toe back (PBR) at 11,903' md. j ~ -Set down 10K to confirm - Pick up and rotate string 1/2 turn and re tag to confirm (2X). -Lay down 3 jts, pick up 2 space out pups jt # 277, RIH. -Make up Cameron tubing hanger and land tubing. 10:00 - 10:30 0.50 RUNCO RUNCMP Confirm Hanger seated and run in lock down screws (RILDS). 10:30 - 12:00 1.50 RUNCO RUNCMP Reverse circulate in 126 bbls of Inhibited Seawater. Chase with 95 bbls of uninhibited Seawater 3 bpm / 150 psi. 12:00 - 14:30 2.50 RUNCO P RUNCMP Drop ball and Rod. Set Packer. ~ -Test Tbg to 4000 psi / 30 minutes. -Bleed to 2000 psi. Test annulus to 3500 psi / 30 minutes. -Bleed annulus and then Tbg to Zero. -Shear DCK valve in GLM #4 at 2175 psi. I -Pump 3 bbls each way through GLM. -Blow down lines. 14:30 - 15:00 0.50 RUNCO P RUNCMP Set TWC and test to 1000 psi. 15:00 - 18:00 3.00 BOPSU N RREP RUNCMP Remove rigid kill line from mud line manifold to BOP and replace with flexible fireproof kill line hose. 18:00 - 22:00 4.00 W HSUR P RUNCMP Remove pitcher nipple and flow line. Nipple down BOP and set Printed: 8/14/2007 426:49 PM ~ ~ ' E~P` EXP~ORATION ', Page 22 of 22 ~perations Sumrnary R~part Legal Well Name: 12-05 Common Well Name: 12-05 Spud Date: 10/30/1979 Event Name: REENTER+COMPLETE Start: 6/20/2007 End: 7/3/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 7/31/2007 Rig Name: NABORS 7ES Rig Number: ' Date ' From - To Hours Task Code NPT Phase Description af C7perations ~ 7/30/2007 18:00 - 22:00 4.00 ~ WHSUR P RUNCMP ~ back. Install Cameron adaptor spool and 4 1/2" 5000 psi Tree. ~ ~ -Test Adaptor void to 5000 psi / 30 minutes- PASS. 22:00 - 00:00 2.00 ~ WHSUR ~ P RUNCMP I, Rig up lines and test Tree with diesel. 7/31/2007 00:00 - 04:00 4.00 WHSUR; P I RUNCMP Continue to test Tree to 5000 psi with diesel. 04:00 - 08:00 4.00 WHSUR P ; i RUNCMP Rig up lines and maniflod to freeze protect. Rig up hot oil ~ ~ pump truck. Test lines to 3000 psi. Pump 75 bbl diesel at 80 F i I down 7" x 4 1/2" annulus at 2 BPM with 1000 psi. Take I seawater returns to cuttings tank. ~ Allow diesel to 'U' tube to freeze protect tubing and annulus to ~ i 2200'. Blow down lines and rig down. j Rig released from well 12-05A at 08:00 hrs Tuesday 31 July I I I I I I I I ~ ~ I i i i i ~ I I ~ I I ( i i 2007. I Printed: 8/14/2007 4:28:49 PM ~ DS12-05APB1 Su Report Date: July 6, 2007 Client: BP Exploration Alaska Field: Prudhoe Bay Unit - EOA Structure/Slot: DS-12/12-05 Well: 12-OS Borehole: 12•05APB1 UWI/API#: 500292039170 Survey Name / Date: 12-O5APB1 / June 26, 2007 7ort / AHD I DDI / ERD ratio: 227.456° / 6668.46 ft / 6.321 / 0.764 Grid Coordinate System: NAD27 Alaska State Planes, Zone 04, US Feet Location Lat/Long: N 7021572710, W 148.40624210 Location Grid NIE Y/X: N 5931029.180 ftUS, E 697575.790 ftUS Grid Convergence Angle: +1.49972870° Report Vertical Section Azimuth: 74.860° Vertical Section Origin: N 0.00011, E 0.000 ft TVD Reference Datum: Rotary Tabie ND Reference Elevation: 70.46 ft relative to MSL Sea Bed I Ground Levei Elevation: 39.40 it relative to MSL Magnetic Declination: 23.830° Total Field Strength: 57657.908 nT Magnetic Dip: 80.888° Declination Date: June 2$ 2007 Magnetic Declination Model: BGGM 2007 North Reference: True Norih Total Corr Mag North -> True North: +23.830° Local Coordinates Reterenced To: Well Head ~ Comments Measured Inclination Azimuth Sub-Sea ND ~/p Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft ft ft tt ft ft de 100 ft ftUS ftUS Hlt U. UU u.vU V.UU -N.46 u.uu u.uu u.uu u.uu u.uv ~.uu u.vv Dy31UL7.10 oaioi~.iy rviv.cioiuiv vv 140.9UOL4LIU CB GYRO MS 97. 46 0.00 0.00 27.00 97. 46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.40624210 197. 46 0.00 0.00 127.00 197. 46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.40624210 297. 46 0.00 0.00 227.00 297. 46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.40624210 397. 46 0.00 0.00 327.00 397. 46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.40624210 497. 46 0.00 0.00 427.00 497. 46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.40624210 597. 46 0.00 0.00 527.00 597. 46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.40624210 697. 46 0.00 0.00 627.00 697. 46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.40624210 797. 46 0.00 0.00 727.00 797. 46 0.00 0.00 0.00 ~.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.40624210 897. 46 0.00 0.00 827.00 897 .46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.40624210 997. 46 0.00 0.00 927.00 997. 46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.4062 1097. 46 0.00 0.00 1027.00 1097 .46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.4062 1197. 46 0.00 0.00 1127.00 1197 .46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.40624210 1297. 46 0.00 0.00 1227.00 1297 .46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.40624210 1397. 46 0.00 0.00 1327.00 1397 .46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.1 S 697575.79 N 70.21572710 W 148.40624210 1497. 46 0.00 0.00 1427.00 1497 .46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.40624210 1597. 46 0.00 0.00 1527.00 1597 .46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.40624210 1697. 46 0.00 0.00 1627.00 1697 .46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.40624210 1797. 46 0.00 0.00 1727.00 1797 .46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.40624210 1897. 46 0.00 0.00 1827.00 1897 .46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.40624210 1997. 46 0.00 0.00 1927.00 1997 .46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.40624210 2097. 46 0.00 0.00 2027.00 2097 .46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.40624210 2197. 46 3.00 114.00 2126.95 2197 .41 2.03 2.62 2.62 -1.06 2.39 3.00 5931028.18 69757821 N 70.21572419 W 148.40622282 SurveyEditor Ver SP 2.1 Bld( doc40x_100 ) 12-05\12-05\12-05AP61\12-O5APB1 Generated 8/21/2007 2:38 PM Page 1 of 4 . Comments Measured ~nclination Azimuth Sub-Sea ND ND Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft ft ft ft ft ft de /100 ft ttUS ftUS L'G`J/.46 4.UU 1L:i.UU Z'L'L6.// GLy/.L:i b.:iy 25./1 25./U -4.UJ /./l 1.14 by;ilUZb.3b by/btS:S.bU IV /U.ZIO/IbIU VV 14t5.4Ub1/yyJ 2397.46 5.00 134.00 2326.46 2396.92 10.95 16.53 16.42 -8.96 13.77 1.32 5931020.59 697589.79 N 70.21570263 W 148.40613107 2497.46 5.50 133.00 2426.04 2496.50 15.72 25.68 25.48 -15.25 20.41 0.51 5931014.47 697596.59 N 70.21568544 W 148.40607752 2597.46 5.00 133.00 2525.62 2596.08 20.55 34.83 34.59 -21.49 27.10 0.50 5931008.41 697603.44 N 70.21566839 W 148.40602355 2697.46 4.00 157.00 2625.32 2695.78 23.32 42.57 42.04 -27.67 31.65 2.11 5931002.34 697608.15 N 70.21565149 W 148.40598686 2797.46 4.00 147.00 2725.08 2795.54 24.87 49.52 48.60 -33.81 34.91 0.70 5930996.30 697611.57 N 70.21563473 W 148.40596055 2897.46 4.25 122.00 2824.83 2895.29 28.46 56.60 55.62 -38.70 39.95 1.80 5930991.54 697616.74 N 70.21562138 W 148.40591988 2997.46 4.50 94.00 2924.55 2995.01 34.69 64.08 62.34 -40.94 47.01 2.13 5930989.49 697623.85 N 70.21561526 W 148.40586297 3097.46 5.00 78.00 3024.21 3094.67 42.74 72.31 68.34 -40.30 55.19 1.41 5930990.34 697632.01 N 7021561699 W 148.40579703 3197.46 6.50 74.00 3123.70 3194.16 52.76 82.33 75.12 -37.84 64.89 1.55 5930993.05 697641.65 N 70.21562373 W 148.40571876 3297.46 9.00 72.00 3222.78 3293.24 66.23 95.81 84.82 -33.86 77.77 2.51 5930997.37 697654.42 N 70.21563459 W 148.40561487 3397.46 11.00 70.00 3321.26 3391.72 83.55 113.17 98.30 -28.18 94.18 2.03 5931003.48 697670.67 N 70.21565011 W 148.4054~ 3497.46 13.00 70.00 3419.07 3489.53 104.27 133.96 115.65 -21.07 113.71 2.00 5931011.10 697690.01 N 70.21566954 W 148.40532500 3597.46 16.00 69.00 3515.87 3586.33 129.19 158.99 137.70 -12.28 137.16 3.01 5931020.49 697713.21 N 70.21569355 W 148.40513595 3697.46 18.00 68.00 3611.50 3681.96 158.24 188.23 164.36 -1.55 164.35 2.02 5931031.93 697740.12 N 70.21572285 W 148.40491662 3797.46 20.00 70.00 3706.04 3776.50 190.62 220.78 195.01 10.08 194.75 2.10 5931044.36 697770.20 N 70.21575465 W 148.40467146 3897.46 24.75 70.00 3798.49 3868.95 228.54 258.84 231.67 23.10 230.51 4.75 5931058.30 697805.60 N 70.21579020 W 148.40438304 3997.46 28.25 72.00 3887.97 3958.43 273.05 303.45 275.28 37.58 272.70 3.61 5931073.88 697847.40 N 70.21582975 W 148.40404276 4097.46 30.50 66.00 3975.13 4045.59 321.78 352.46 323.16 55.22 318.41 3.70 5931092.71 697892.63 N 70.21587794 W 148.40367413 4197.46 34.00 68.00 4059.69 4130.15 374.63 405.81 375.31 76.02 367.53 3.66 5931114.79 697941.19 N 70.21593476 W 148.40327794 4297.46 38.00 68.00 4140.57 4211.03 432.98 464.58 433.26 98.04 422.02 4.00 5931138.22 697995.08 N 70.21599490 W 148.40283849 4397.46 42.00 67.00 4217.16 4287.62 496.71 528.84 496.76 122.65 481.38 4.05 5931164.38 698053.77 N 70.21606213 W 148.40235971 4497.46 40.00 68.00 4292.63 4363.09 561.77 594.44 561.77 147.77 541.99 2.10 5931191.07 698113.69 N 70.21613074 W 148.40187093 4597.46 42.50 68.00 4367.81 4438.27 627.22 660.37 627.29 172.46 603.11 2.50 5931217.36 698174.15 N 70.21619820 W 148.40137791 4697.46 42.50 68.00 4441.54 4512.00 694.30 727.93 694.51 197.77 665.75 0.00 5931244.30 698236.10 N 70.21626732 W 148.40087269 4797.46 42.25 68.00 4515.41 4585.87 761,22 795.33 761.63 223.02 728.24 0.25 5931271.17 698297.91 N 70.21633628 W 148.40036868 4897.46 43.00 68.00 4588.99 4659.45 828.45 863.05 829.11 248.39 791.03 0.75 5931298.17 698360.01 N 70.21640557 W 148.39986226 4997.46 43.75 69.00 4661.68 4732.14 896.70 931.73 897.63 273.55 $54.93 1.02 5931325.00 698423.22 N 70.21647430 W 148.39934689 5097.46 43.50 70.00 4734.07 4804.53 965.39 1000.72 966.55 297.72 919.55 0.73 5931350.84 6984$7.18 N 7021654029 W 148.3988 5197.46 44.00 72.00 4806.31 4876.77 1034.38 1069.87 1035.68 320.22 984.93 1.47 5931375.05 698551.95 ~ N 70.21660175 W 148.3982 5297.46 45.00 72.00 4877.63 4948.09 1104.38 1139.96 1105.77 341.88 1051.59 1.00 5931398.44 698618.01 N 70.21666090 W 148.39776070 5397.46 44.50 72.00 4948.65 5019.11 1174.70 1210.36 1176.17 363.64 1118.55 0.50 5931421.94 698684.37 N 70.21672031 W 148.39722066 5497.46 44.25 73.00 5020.13 5090.59 1244.57 1280.29 1246.10 384.67 1185.24 0.74 5931444.71 698750.49 N 70.21677773 W 148.39668271 5597.46 44.00 73.00 5091.91 5162.37 1314.16 1349.91 1315.71 405.02 1251.82 0.25 5931466.80 698816.51 N 70.21683332 W 148.39614569 5697.46 43.25 73.00 5164.30 5234.76 1383.11 1418.91 1384.70 425.19 1317.80 0.75 5931488.69 698881.94 N ~0.21688839 W i 48.39561352 5797.46 44.25 74.00 5236.53 5306.99 1452.24 1488.06 1453.83 444.83 1384.10 1.22 5931510.05 698947.70 N 70.21694200 W 148.39507873 5897.46 43.75 75.00 5308.47 5378.93 1521.70 1557.52 1523.24 463.39 1451.04 0.86 5931530.36 699014.12 N 70.21699269 W 148.39453883 Tie-In Suroey CB 5997.46 44.75 72.00 5380.10 5450.56 1591.45 1627.29 1592.99 483.22 1517.93 2.32 5931551.93 699080.46 N 70.21704682 W 148.39399935 GYRO MS Top Window 6074.00 44.56 70.52 5434.55 5505.01 1645.13 1681.08 1646.77 500.50 1568.87 1.38 5931570.54 699130.93 N 70.21709400 W 148.39358846 (Inc+Trend) SurveyEditor Ver SP 2.1 Bld( doc40x_100 ) 12-05\12-05\12-05APB1\12-05AP61 Generated 8/21/2007 2:38 PM Page 2 of 4 ~ Comments Measured Inclination Azimuth Sub•Sea TVD TVD Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft tt ft ft ft ft ft de 100 ft ftUS ftUS B8S@ WIndOW 6091.00 4Ei.4tS 69.55 544Ei.4Ei ~31(i.y1 6117.96 44.63 69.50 5465.34 5535.80 6154.60 43.26 69.00 5491.72 5562.18 6249.71 43.47 65.00 5560.88 5631.34 6344.86 42.29 62.00 5630.61 5701.07 6439.42 42.11 58.50 5700.67 5771.13 First MWD+IFR+MS 6533.97 42.28 55.38 5770.73 5841.19 6629.58 44.76 47.04 5840.11 5910.57 6724.86 46.32 39.05 5906.90 5977.36 6820.25 50.78 32.00 5970.07 6040.53 6914.83 56.68 24.10 6026.06 6096.52 7007.90 61.62 20.17 6073.78 6144.24 7100.67 66.30 22.56 6114.50 6184.96 7164. 60 67 .54 24.96 6139.56 6210.02 7203. 56 68 .25 27.00 6154.23 6224.69 7297. 36 68 .34 30.75 6188.93 6259.39 7389. 58 67 .10 35.43 6223.91 6294.37 7484. 99 65 .41 41.24 6262.35 6332.81 7579. 57 63 .27 47.19 6303.33 6373.79 7673. 85 61 .88 53.38 6346.79 6417.25 7767. 69 61 .44 59.31 6391.37 6461.83 7861. 39 61 .31 61.03 6436.26 6506.72 7954. 15 60 .84 60.16 6481.12 6551.58 lEiS/.11 1(iy;t."Ll 1(i5ti .tty 5U4.tib 1bttU.1/ 1676.38 1712.46 1678 .11 511.38 1598.30 1701.69 1737.89 1703 .50 520.39 1622.07 1766.35 1803.18 1768 .52 545.90 1682.16 1829.82 1867.92 1832 .57 574.76 1740.10 1891.26 1931.42 1894 .84 606.27 1795.23 1951.67 1994.92 1956 .39 640.90 1848.44 2011.82 2060.69 2018 .36 682.16 1899.59 2069.48 2124.60 2176.56 2224.86 2274.46 2311.39 2335.13 2395.67 2459.28 2529.40 2602.68 2678.72 2756.98 2836.53 2915.22 2128.64 2200.08 2276.26 2356.13 2439.45 2498.26 2534.36 2621.51 2706.83 2794.15 2879.38 2963.05 3045.62 3127.87 3209.06 2078.95 2138.52 2197.02 2254.24 2314.70 2359.79 2388.62 2461.47 2536.76 2617.70 2699.80 2782.38 2864.82 2947.05 3028.21 731.82 790.01 857.28 931.28 1008.86 1062.68 1095.12 1171.42 1242.90 1311.38 1372.47 1425.92 1471.67 1512.58 1552.44 1945.88 1987.25 2022.86 2052.89 2083.27 2106.97 2122.79 2164.86 2211.42 2265.53 2324.92 2389.22 2457.92 252927 2600.00 11.U1 by;ilb/4.yt5 Fiyyl4l."L'L N/U. "Ll/lUS:i'L VV 1425. ;Sy34yFi51 6.86 5931582.18 699160.06 N 70. 21712370 W 148. 39335107 3.86 5931591.81 699183.60 N 70. 21714829 W 148. 39315928 2.90 5931618.88 699242.99 N 70. 21721795 W 148. 39267459 2.48 5931649.25 699300.15 N 70. 21729677 W 148. 39220725 2.49 5931682.19 699354.43 N 70. 21738281 W 148. 39176253 2.22 5931718.20 699406.71 N 70. 21747740 W 148. 39133331 6.54 5931760.78 699456.77 N 70 21759006 W 148. 39092066 6.20 5931811.63 7.24 5931870.88 9.17 5931939.06 6.43 5932013.81 5.55 5932092.15 699501.74 699541.57 699575.41 699603.48 699631.83 699654.11 699669.07 699709.13 699753.80 699806.10 699863.86 699926.74 699994.22 700064.46 700134.12 700204.55 700275.46 700345.92 700417.38 700486.82 700558.48 700628.54 700698.88 700771.35 70084226 700914.12 700983.20 701053.07 701123.28 701192.98 N 70.21772570 W 148.39054714 N 70.21788465 W 148.39021341 N 70.21806841 W 148.38992597 N 70.21827053 W 148.3896~ N 70.21848246 W 148.3894 N 70.21862948 W 148.38924711 N 70.21871810 W 148.38911949 N 70.21892651 W 148.38877993 N 70.21912174 W 148.38840421 N 70.21930878 W 148.38796754 N 70.21947563 W 148.38748839 N 70.21962161 W 148.38696952 N 70.21974653 W 148.38641524 N 70.21985823 W 148.38583961 N 70.21996706 W 148.38526897 N 70.22007907 W 148.38469183 N 70.22019072 W 148.38411081 N 70.22029860 W 148.38353379 N 70.22040427 W 148.38294880 N 70.22050537 W 148.38238047 N 70.22060860 W 148.3817~ N 70.22070955 W 148.3812 N 70.22081263 W 148.38064503 N 70.22092026 W 148.38005169 N 70.22102674 W 148.37947107 N 70.22113450 W 148.37888268 N 70.22123843 W 148.37831692 N 70.22134474 W 148.37774469 N 70.22145234 W 148.37716966 N 70.22156082 W 148.37659855 3.96 5932146.57 5.18 5932179.42 3.72 5932256.79 4.88 5932329.45 5.85 5932399.32 6.10 5932461.94 6.01 5932517.06 5.58 5932564.59 1.62 5932607.35 0.96 5932649.04 8048.76 60.45 60.17 6527.50 6597.96 2994.98 3291.52 3110.66 1593.47 2671.53 0.41 5932691.92 8144.16 60.02 60.65 6574.87 6645.33 3075.18 3374.33 3193.46 1634.36 2743.54 0.63 5932734.69 8238.67 59.64 61.51 6622.36 6692.82 3154.53 3456.04 3275.12 1673.87 2815.06 0.88 5932776.06 8334.06 59.36 62.30 6670.78 6741.24 3234.63 3538.23 335722 1712.58 2887.56 0.77 5932816.64 8426.67 59.12 6223 6718.14 6788.60 3312.29 3617.81 3436.70 1749.62 2958.00 0.27 5932855.51 8522.15 59.07 62.79 6767.18 6837.64 3392.32 3699.74 3518.51 1787.43 3030.68 0.51 5932895.21 8615.21 59.76 62.23 6814.53 6884.99 3470.58 3779.85 3598.51 1824.41 3101.74 0.90 5932934.04 8708.44 60.20 61.99 6861.18 6931.64 3549.31 3860.57 3679.15 1862.17 3173.09 0.52 5932973.65 8804.59 60.21 61.61 6908.95 6979.41 3630.59 3944.01 3762.53 1901.60 3246.62 0.34 5933014.99 8898.94 60.13 61.47 6955.89 7026.35 3710.24 4025.86 3844.34 1940.61 3318.58 0.15 5933055.86 8994.65 59.95 61.67 7003.68 7074.14 3790.94 4108.78 392722 1980.08 3391.50 0.26 5933097.23 9086.85 59.90 61.32 7049.89 7120.35 3868.57 4188.57 4006.96 2018.16 3461.62 0.33 5933137.13 9180.48 59.66 61.13 7097.01 7167.47 3947.19 4269.47 4087.84 2057.11 3532.53 0.31 5933177.91 9274.91 59.52 60.97 7144.81 7215.27 4026.28 4350.91 4169.26 2096.53 3603.79 0.21 5933219.18 9369.00 59.72 60.40 7192.40 7262.86 4104.97 4432.08 4250.42 2136.27 3674.57 0.56 5933260.76 9464.20 59.92 60.22 7240.26 7310.72 4184.63 4514.38 4332.72 2177.03 3746.06 027 5933303.38 9560.81 60.43 60.12 7288.30 7358.76 4265.70 4598.19 4416.53 2218.72 3818.77 0.54 5933346.95 9656.22 60.24 59.23 7335.53 7405.99 4345.71 4681.10 4499.43 2260.58 3890.33 0.83 5933390.67 701263.38 N 70.22167208 W 148.37602164 701334.97 N 70.22178588 W 148.37543492 701405.40 N 70.22190014 W 148.37485744 SurveyEditor Ver SP 2.1 Bld( doc40x_100 ) 12-05\12-OS\12-05APB1\12-05APB1 Generated 8/21/2007 2:38 PM Page 3 of 4 ~ Comments Measured ~nclination Azimuth Sub-Sea TVD ND Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft ft ft ft ti tt de I100 ft ftUS ftUS y/4y.25b by,`JZ SZS.VO /J23L.L.S /4DZ.b`J 44Z3.b3 4/f~Z.Zb 4bt5U.bb ZJUL.L51 oaoy.oa 1.14 Dy33434.Uy /U14/3A0 IV /U.LLLV1041 VV 146.3/4G~OG4 9846.16 59,97 57.83 7430.46 7500.92 4503.39 4845.61 4663.88 2347.06 4030.27 0.20 5933480.77 701543.03 N 70.22213619 W 148.37372810 9941.45 60.52 56.39 7477.76 7548.22 4582.17 4928.33 4746.51 2391.98 4099.74 1.43 5933527.50 701611.29 N 70.22225881 W 148.37316753 10036.28 61.12 55.94 7523.99 7594.45 4660.60 5011.13 4829.15 2438.08 4168.51 0.76 5933575.38 701678.82 N 70.22238466 W 148.37261250 10129.39 62.48 54.48 7567.99 7638.45 4737.87 5093.18 4910.96 2484.90 4235.89 2.01 5933623.95 701744.95 N 70.22251247 W 148.37206868 10224.12 62.76 53.66 7611.56 7682.02 4816.51 5177.30 4994.69 2534.26 4304.00 0.82 5933675.07 701811.75 N 70.22264721 W 148.37151895 10318.06 62.40 54.53 7654.82 7725.28 4894.48 5260.68 5077.71 2583.17 4371.54 0.91 5933725.72 701877.98 N 70.22278070 W 148.37097384 10413.54 62.23 54.50 7699.18 7769.64 4973.75 5345.23 5161.95 2632.25 4440.39 0.18 5933776.58 701945.51 N 70.22291468 W 148.37041818 10506.39 61.79 54.45 7742.76 7813.22 5050.60 5427.22 5243.65 2679.89 4507.12 0.48 5933825.95 702010.97 N 70.22304472 W 148.36987961 10600.33 61.36 54.95 7787.47 7857.93 5128.16 5509.84 5326.01 2727.63 4574.54 0.65 5933875.43 702077.12 N 7022317503 W 148.36933541 10694.97 58.28 59.27 7835.06 7905.52 5206.02 5591.63 5407.72 2772.07 4643.18 5.11 5933921.66 702144.56 N 70.22329634 W 148.36878142 10789.89 55.03 63.84 7887.25 7957.71 5283.13 5670.90 5486.91 2809.87 4712.83 5.28 5933961.26 702213.20 N 70.22339948 W 148.3682~ 10884.53 52.5i 67.03 7943.19 8013.65 5358.41 5747.23 5562.79 2841.63 4782.23 3.81 5933994.83 702281.74 N 70.22348613 W 148.36765921 10979.48 49.54 70.04 8002.91 8073.37 5431.75 5821.03 5635.64 2868.67 4850.89 3.98 5934023.65 702349.66 N 70.22355988 W 148.36710513 11072.89 49.14 74.67 8063.79 8134.25 5502.51 5891.87 5704.68 2890.15 4918.38 3.78 5934046.89 702416.56 N 70.22361844 W 148.36656052 11166.96 49.39 79.13 8125.20 8195.66 5573.71 5963.14 5772.73 2906.29 4987.77 3.60 5934064.84 702485.51 N 70.22366241 W 148.36600056 11262.08 48.95 83.15 8187.40 8257.86 5645.22 6035.10 5839.79 2917.38 5058.86 3.23 5934077.79 702556.27 N 70.22369258 W 148.36542698 11355.88 48.96 87.85 8249.02 8319.48 5714.72 6105.82 5903.70 2922.93 5129.35 3.78 5934085.18 702626.59 N 70.22370760 W 148.36485825 11451.17 49.69 93.76 8311.16 8381.62 5784.14 6178.07 5966.03 2921.89 5201.55 4.76 5934086.03 702698.79 N 70.22370464 W 148.36427572 11546.33 49.53 92.70 8372.82 844328 5852.92 6250.54 6027.25 2917.81 5273.91 0.86 5934083.84 702771.23 N 70.22369334 W 148.36369192 11638.92 50.57 91.44 8432.27 8502.73 5920.72 6321.52 6088.19 2915.25 5344.84 1.53 5934083.14 702842.20 N 70.22368622 W 148.36311967 11732.65 54.06 90.69 8489.56 8560.02 5991.95 6395.69 6152.74 2913.88 5418.99 3.78 5934083.71 702916.36 N 70.22368234 W 148.36252142 11827.35 57.03 91.08 8543.14 8613.60 6066.99 6473.76 6221.04 2912.67 5497.06 3.15 5934084.55 702994.42 N 70.22367888 W 148.36189157 11920.19 59.70 91.74 8591.83 8662.29 6142.75 6552.80 6290.06 2910.72 5576.07 2.94 5934084.66 703073.46 N 7022367339 W 148.36125410 Last MWD+IFR+MS 11988.96 61.93 91.81 8625.36 8695.82 6200.19 6612.84 6342.47 2908.86 5636.08 3.24 5934084.38 703133.49 N 70.22366819 W 148.36076998 TD ( Projected ) 12052.00 61.93 91.81 8655.02 8725.48 6253.40 6668.46 6391.12 2907.10 5691.68 0.40 5934084.07 703189.11 N 70.22366327 W 148.36032143 Survey Type: Definitive Survey NOTES: CB GYRO MS -( Camera-based gyro multishot -- Traditional optically referenced gyro surveys run on wireline - including "level rotor" gyros and Sperry-Sun SU3. Replaces ex-BP "PGMS" model.) ~ INC+TREND -( Inclinometer + known azi trend -- Inclination only surveys in near- vertical hole-where formation dip and experien ce enables direction of drift to be predicted. Replaces ex-BP "Inclinometer (azimuth in known quadrant)" model. MWD + IFR + MS -( In-fiel d referenced MWD wit h mult-station analysis and correction applied in post-processing. Assumes a BHA sag correction is applied to enhance inclinat ion accuracy. ) Leqal Description: Northing (Y) [ftUS] Easting (X) [ftUS] Surface : 698 FSL 27 FE L S18 T10N R15E UM 5931029.18 697575.79 BHL : 3603 FSL 4885 FEL S16 T10N R15E UM 5934084.07 703189.11 SurveyEditor Ver SP 2.1 Bid( doc40x_100 ) 12-05\12-05\12-05APB1\12-05AP61 Generated 8/21/2007 2:38 PM Page 4 of 4 bp ~ E~ DS12-05A Su Report Date: 26•Jul•07 Client: BP Exploration Alaska Field: Prudhoe Bay Unit - EOA Structure I Slot: DS-12 / 12-05 Well: 12•05 Borehole: 12-OSA UWI/API#: 500292039101 Survey Name / Date: 12-05A / July 26, 2007 Tort / AHD / DDI / ERD ratio: 284.025° / 8786.40 ft / 6.606 / 1.003 Grid Coordinate System: NAD27 Alaska State Planes, Zone 04, US Feet Location LatlLong: N 70.21572710, W 148.40624210 Location Grid NIE Y/X: N 5931029.180 ftUS, E 697575.790 ftUS Grid Convergence Angle: +1.49972870° Grid Scale Factor: 0.99994435 Report Vertical Section Azimuth: 72.560° Vertical Section Origin: N 0.000 it, E 0.000 it ND Reference Datum: Rotary Table ND Reference Elevation: 70.46 ft relative to MSL Sea Bed / Ground level Elevation: 39.40 ft relative to MSL Magnetic Declination: 23.813° Total Field Strength: 57658.602 nT Magnetic Dip: 80.888° Declination Date: July 09, 2007 Magnetic Declination Model: BGGM 2007 . North Reference: True Norlh Total Corr Mag North -> True North: +23.813° Comments Measured Inclination Azimuth Sub-Sea ND ND Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft ft ft ft ft ft de 700 ft ftUS ftUS rro~ectea-up u. uu u.uu U.UV -/U.4b v.uu uw ~.uu u.uu u.w u~~ v.w o~~~vca.~a oy~o~o.~~ ~v ~v.c~~~~~ ~~ w 140.4UOC4LIV CB GYRO MS 97. 46 0.00 0.00 27.00 97.46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.40624210 197. 46 0.00 0.00 127.00 197.46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.40624210 297. 46 0.00 0.00 227.00 297.46 0.00 0.00 0.00 0,00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.40624210 397. 46 0.00 0.00 327.00 397.46 0.00 0.00 0.00 0,00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.40624210 497. 46 0.00 0.00 427.00 497.46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.40624210 597. 46 0.00 0.00 527.00 597.46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.40624210 697. 46 0.00 0.00 627.00 697.46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.40624210 797. 46 0.00 0.00 727.00 797.46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.40624210 897. 46 0.00 0.00 827.00 897.46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.40624210 997. 46 0.00 0.00 927.00 997.46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.4062 1097. 46 0.00 0.00 1027.00 1097.46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.406~ 1197. 46 0.00 0.00 1127.00 1197.46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.4062 1297. 46 0.00 0.00 1227.00 1297.46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.40624210 1397. 46 0.00 0.00 1327.00 1397.46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.40624210 1497. 46 0.00 0.00 1427.00 1497.46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 7021572710 W 148.40624210 1597. 46 0.00 0.00 1527.00 1597.46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.40624210 1697. 46 0.00 0.00 1627.00 1697.46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.40624210 1797. 46 0.00 0.00 1727.00 1797.46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.40624210 1897. 46 0.00 0.00 1827.00 1897.46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.40624210 1997. 46 0.00 0.00 1927.00 1997.46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.40624210 2097. 46 0.00 0.00 2027.00 2097.46 0.00 0.00 0.00 0.00 0.00 0.00 5931029.18 697575.79 N 70.21572710 W 148.40624210 2197. 46 3.00 114.00 2126.95 2197.41 1.96 2.62 2.62 -1.06 2.39 3.00 5931028.18 697578.21 N 7021572419 W 148.40622282 SurveyEditor Ver SP 2.1 Bld( doc40x_100 ) 12-05\12-05\12-05A\12-05A Generated 8/21/2007 2:38 PM Page 1 of 6 Comments Measured Inciination Azimuth Sub-Sea TVD ND Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft ft ft ft ft ft de /100 ft ftUS ftUS ZL`J/.4b 4.VV lL:i. UU ZZZb.// ZZ`J/.Z:S b.lb t5./1 t5./U -4.U3 /./I 1.14 JJStVGJ. 30 b`J/bt56.t~U IV/V .GID/IbIV VV 146.4Ub1/`J`Jb 2397. 46 5.00 134. 00 2326.46 2396.92 10.45 16.53 16.42 -8.96 13.77 1.32 5931020. 59 697589.79 N 70. 21570263 W 148.40613107 2497. 46 5.50 133. 00 2426.04 2496.50 14.90 25.68 25.48 -15.25 20.41 0.51 5931014. 47 697596.59 N 70. 21568544 W 148.40607752 2597. 46 5.00 133. 00 2525.62 2596.08 19.41 34.83 34.59 -21.49 27.10 0.50 5931008. 41 697603.44 N 70. 21566839 W 148.40602355 2697. 46 4.00 157. 00 2625.32 2695.78 21.90 42.57 42.04 -27.67 31.65 2.11 5931002. 34 697608.15 N 70. 21565149 W 148.40598686 2797. 46 4.00 147. 00 2725.08 2795.54 23.17 49.52 48.60 -33.81 34.91 0.70 5930996. 30 697611.57 N 70. 21563473 W 148.40596055 2897. 46 4.25 122. 00 2824.83 2895.29 26.52 56.60 55.62 -38.70 39.95 1.80 5930991. 54 697616.74 N 70. 21562138 W 148.40591988 2997. 46 4.50 94. 00 2924.55 2995.01 32.58 64.08 62.34 -40.94 47.01 2.13 5930989. 49 697623.85 N 70. 21561526 W 148.40586297 3097. 46 5.00 78. 00 3024.21 3094.67 40.57 72.31 68.34 -40.30 55.19 1.41 5930990. 34 697632.01 N 70. 21561699 W 148.40579703 3197. 46 6.50 74. 00 3123.70 3194.16 50.57 82.33 75.12 -37.84 64.89 1.55 5930993. 05 697641.65 N 70. 21562373 W 148.40571876 3297. 46 9.00 72. 00 3222.78 3293.24 64.05 95.81 84.82 -33.86 77.77 2.51 5930997. 37 697654.42 N 70. 21563459 W 148.40561487 3397. 46 11.00 70. 00 332126 3391.72 81.40 113.17 98.30 -28.18 94.18 2.03 5931003. 48 697670.67 N 70. 21565011 W 148.4054~ 3497. 46 13.00 70. 00 3419.07 3489.53 102.17 133.96 115.65 -21.07 f t 3.71 2.00 5931011. 10 697690.01 N 70. 21566954 W 148.40532500 3597. 46 16.00 69. 00 3515.87 3586.33 127.17 158.99 137.70 -12.28 137.16 3.01 5931020. 49 697713.21 N 70. 21569355 W 148.40513595 3697. 46 18.00 68. 00 3611.50 3681.96 156.33 188.23 164.36 -1.55 164.35 2.02 5931031. 93 697740.12 N 70. 21572285 W 148.40491662 3797. 46 20.00 70. 00 3706.04 3776.50 188.82 220.78 195.01 10.08 194.75 2.10 5931044. 36 697770.20 N 70. 21575465 W 148.40467146 3897. 46 24.75 70. 00 3798.49 3868.95 226.84 258.84 231.67 23.10 230.51 4.75 5931058. 30 697805.60 N 70. 21579020 W 148.40438304 3997. 46 28.25 72. 00 3887.97 3958.43 271.43 303.45 275.28 37.58 272.70 3.61 5931073. 88 697847.40 N 70. 21582975 W 148.40404276 4097. 46 30.50 66. 00 3975.13 4045.59 320.32 352.46 323.16 55.22 318.41 3.70 5931092. 71 697892.63 N 70. 21587794 W 148.40367413 4197. 46 34.00 68. 00 4059.69 4130.15 373.42 405.81 375.31 76.02 367.53 3.66 5931114. 79 697941.19 N 70. 21593476 W 148.40327794 4297. 46 38.00 68. 00 4140.57 4211.03 432.00 464.58 433.26 98.04 422.02 4.00 5931138. 22 697995.08 N 70 21599490 W 148.40283849 4397. 46 42.00 67. 00 4217.16 4287.62 496.01 528.84 496.76 122.65 481.38 4.05 5931164. 38 698053.77 N 70. 21606213 W 148.40235971 4497. 46 40.00 68. 00 4292.63 4363.09 561.36 594.44 561.77 147.77 541.99 2.10 5931191. 07 698113.69 N 70 21613074 W 148.40187093 4597. 46 42.50 68. 00 4367.81 4438.27 627.08 660.37 627.29 172.46 603.11 2.50 5931217. 36 698174.15 N 70 21619820 W 148.40137791 4697. 46 42.50 68. 00 4441.54 4512.00 694.42 727.93 694.51 197.77 665.75 0.00 5931244. 30 698236.10 N 70. 21626732 W 148.40087269 4797. 46 42.25 68. 00 4515.41 4585.87 761.61 795.33 761.63 223.02 728.24 0.25 5931271. 17 698297.91 N 70. 21633628 W 148.40036868 4897. 46 43.00 68. 00 4588.99 4659.45 829.11 863.05 829.11 248.39 791.03 0.75 5931298. 17 698360.01 N 70. 21640557 W 148.39986226 4997. 46 43.75 69. 00 4661.68 4732.14 897.62 931.73 897.63 273.55 854.93 1.02 5931325. 00 698423.22 N 70. 21647430 W 148.39934689 5097. 46 43.50 70. 00 4734.07 4804.53 966.51 1000.72 966.55 297.72 919.55 0.73 5931350. 84 698487.18 N 70. 21654029 W 148.3988~ 5197. 46 44.00 72. 00 4806.31 4876.77 1035.63 1069.87 1035.68 320.22 984.93 1.47 5931375. 05 698551.95 N 70. 21660175 W 148.3982 5297. 46 45.00 72. 00 4877.63 4948.09 1105.71 1139.96 1105.77 341.88 1051.59 1.00 5931398. 44 698618.01 N 70. 21666090 W 148.39776070 5397. 46 44.50 72. 00 4948.65 5019.11 1176.11 1210.36 1176.17 363.64 1118.55 0.50 5931421. 94 698684.37 N 70. 21672031 W 148.39722066 5497. 46 44.25 73. 00 5020.13 5090.59 1246.05 1280.29 1246.10 384.67 1185.24 0.74 5931444. 71 698750.49 N 70. 21677773 W 148.39668271 5597. 46 44.00 73. 00 5091.91 5162.37 1315.67 1349.91 1315.71 405.02 1251.82 0.25 5931466. 80 698816.51 N 70. 21683332 W 148.39614569 Tie-In Survey 5697. 46 43.25 73. 00 5164.30 5234.76 1384.66 1418.91 1384.70 425.19 1317.80 0.75 5931488. 69 698881.94 N 70. 21688839 W 148.39561352 Top Window 5702. 00 43.29 73. 06 5167.60 5238.06 1387.77 1422.02 1387.81 426.10 1320.78 1.26 5931489. 68 698884.89 N 70. 21689087 W 148.39558951 (Inc+Trend) Base Window 5719. 00 45.93 72. 13 5179.70 5250.16 1399.71 1433.96 1399.75 429.67 1332.17 16.00 5931493. 55 698896.18 N 70. 21690063 W 148.39549764 5746. 00 46.00 72. 00 5198.47 5268.93 1419.12 1453.37 1419.16 435.65 1350.64 0.43 5931500. 00 698914.48 N 70. 21691695 W 148.39534868 5779. 04 42.66 72. 00 5222.10 5292.56 1442.20 1476.45 1442.24 442.79 1372.59 10.11 5931507. 71 698936.24 N 70. 21693643 W 148.39517160 5876. 89 43.37 75. 00 5293.65 5364.11 1508.93 1543.20 1508.96 461.73 1436.58 2.21 5931528. 32 698999.71 N 70. 21698814 W 148.39465545 s SurveyEditor Ver SP 2.1 Bld( doc40x_100 ) 12-05\12-05\12-05A\12-05A Generated 8/21/2007 2:38 PM Page 2 of 6 r Measured Vertical Along Hole Comments Inciination Azimuth Sub-Sea ND TVD Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft ft ft ft ft ft de 100 ft ftUS ftUS SybU.yS 45.U:S /:i.SU 5;i5;i.y'L 54L4.:itS 15b/.5U 1bU1.CU 15b/.5L 4//.05 14yL.y21 L.3J 5yJ1545./1 byyV55. b/ IV /V.C7/V:ilbU VV 1425.Jy4GUU525 6004.67 44.12 72.00 5385.06 5455.52 1598.18 1632.48 1598.20 486.74 1522.28 3.18 5931555.56 699084. 72 N 70.21705643 W 148.39396422 6063.23 44.34 70.00 5427.02 54 7.48 1639.01 1673.32 1639.04 500.04 1560.90 2.41 5931569.87 699122. 98 N 70.21709274 W 148.39365272 6156.90 44.14 72.50 5494.14 5564.60 1704.33 1738.67 1704.37 521.04 1622.77 1.87 5931592.49 699184. 27 N 70.21715009 W 148.39315367 625128 44.09 75.50 5561.90 5632.36 1770.00 1804.36 1770.02 539.15 1685.91 2.21 5931612.24 699246. 91 N 70.21719952 W 148.39264439 6346.27 42.46 73.00 5631.07 5701.53 1835.07 1869.47 1835.08 556.80 1748.57 2.49 5931631.52 699309. 09 N 70.21724770 W 148.39213894 6440.34 42.00 70.00 5700.73 5771.19 1898.27 1932.68 1898.29 576.85 1808.52 2.20 5931653.13 699368. 49 N 70.21730243 W 148.39165541 MWD+IFR+MS 6534.58 42.75 70.91 5770.35 5840.81 1961.74 1996.20 1961.77 598.10 1868.37 1.03 5931675.93 699427. 76 N 70.21736044 W 148.39117260 6630.54 43.53 69.11 5840.37 5910.83 2027.28 2061.81 2027.33 620.53 1930.03 1.52 5931699.97 699488. 81 N 70.21742169 W 148.39067527 6726.85 45.54 68.46 5909.02 5979.48 2094.68 2129.35 2094.76 644.98 1992.99 2.14 5931726.06 699551. 10 N 70.21748843 W 148.39016739 6819.76 49.71 63.28 5971.65 6042.11 2162.78 2197.96 2162.94 673.11 2055.53 6.09 5931755.81 699612. 88 N 70.21756523 W 148.38966288 6915.41 54.95 58.51 6030.10 6100.56 2236.84 2273.62 2237.23 710.00 2121.57 6.75 5931794.42 699677. 93 N 70.21766597 W 148.3891 ~ 7009.77 5$.76 53.41 6081.71 6152.17 2312.48 2352.60 2313.37 754.26 2186.95 6.06 5931840.37 699742. 13 N 70.21778683 W 148.38860270 7103.16 59.39 53.07 6129.70 6200.16 2388.08 2432.71 2389.80 802.20 2251.14 0.74 5931889.98 699805. 03 N 70.21791776 W 148.38808491 7198.00 59.61 52.91 6177.84 6248.30 2465.08 2514.43 2467.90 851.39 2316.39 0.27 5931940.86 699868. 97 N 70.21805209 W 148.38755847 7292.41 59.90 52.73 6225.39 6295.85 2541.84 2595.99 2546.01 900.68 2381.37 0.35 5931991.82 699932. 64 N 70.21818669 W 148.38703422 7384.79 59.91 51.77 6271.72 6342.18 2616.80 2675.92 2622.53 949.61 2444.57 0.90 5932042.39 699994. 53 N 70.21832031 W 148.38652436 7478.86 59.54 50.78 6319.14 6389.60 2692.50 2757.16 2700.12 1000.43 2507.95 0.99 5932094.85 700056. 55 N 70.21845910 W 148.38601300 7573.16 59:06 49.66 6367.29 6437.75 2767.49 2838.24 2777.34 1052.31 2570.26 1.14 5932148.34 700117. 48 N 70.21860077 W 148.38551024 7666.75 59.19 49.02 6415.31 6485.77 2841.31 2918.57 2853.67 1104.65 2631.19 0.60 5932202.25 700177. 02 N 70.21874369 W 148.38501859 7761.04 59.53 48.15 6463.37 6533.83 2915.44 2999.69 2930.65 1158.32 2692.03 0.87 5932257.48 700236. 43 N 70.21889025 W 148.38452772 7855.44 59.91 47.15 6510.97 6581.43 2989.37 3081.21 3007.82 1213.23 2752.28 1.00 5932313.96 700295. 21 N 70.21904022 W 148.38404160 7949.33 59.43 46.69 6558.38 6628.84 3062.43 3162.25 3084.42 1268.58 2811.47 0.66 5932370.83 700352. 93 N 70.21919137 W 148.38356399 8043.65 58.90 46.48 6606.73 6677.19 3135.24 3243.24 3161.05 1324.24 2870.30 0.59 5932428.01 700410. 28 N 70.21934337 W 148.38308928 8137.67 58.87 45.70 6655.31 6725.77 3207.29 3323.73 3237.20 1380.07 2928.29 0.71 5932485.33 700466. 79 N 70.21949582 W 148.38262135 8232.85 58.55 44.94 6704.75 6775.21 3279.61 3405.07 3314.00 1437.26 2986.12 0.76 5932544.01 700523. 10 N 7021965200 W 148.38215466 8327.13 58.98 45.16 6753.64 6824.10 3351.11 3485.68 3390.22 1494.21 3043.17 0.50 5932602.43 700578. 64 N 70.21980753 W 148.38169426 8420.25 59.59 45.51 6801.20 6871.66 3422.29 3565.74 3466.22 1550.49 3100.11 0.73 5932660.18 700634. 08 N 70.21996120 W 148.38123477 8515.76 60.42 46.41 6848.95 6919.41 3496.26 3648.45 3545.21 1607.99 3159.57 1.19 5932719.21 700692. 02 N 70.22011822 W 148.3807~ 8610.24 59.93 48.69 6895.94 6966.40 3570.53 3730.42 3624.26 1663.31 3220.04 2.16 5932776.09 700751. 02 N 70.22026928 W 148.3802 8705.36 59.58 48.98 6943.85 7014.31 3645.76 3812.59 3704.10 1717.39 3281.91 0.45 5932831.78 700811. 44 N 7022041698 W 148.37976773 8799.12 59.03 48.69 6991.71 7062.17 3719.57 3893.21 3782.53 1770.46 3342.60 0.64 5932886.41 700870. 72 N 70.22056188 W 148.37927792 8894.40 58.77 48.07 7040.93 7111.39 3793.99 3974.80 3861.84 1824.65 3403.59 0.62 5932942.17 700930. 27 N 70.22070984 W 148.37878573 8989.00 58.50 48.08 7090.17 7160.63 3867.50 4055.57 3940.35 1878.62 3463.69 0.29 5932997.70 700988. 93 N 70.22085721 W 148.37830072 9082.23 58.69 47.90 7138.75 7209.21 3939.87 4135.15 4017.75 1931.87 3522.81 0.26 5933052.48 701046. 64 N 70.22100263 W 148.37782357 9176.86 59.58 48.33 7187.29 7257.75 4013.82 4216.37 4096.90 1986.10 3583.29 1.02 5933108.27 701105. 67 N 70.22115070 W 148.37733552 9269.92 59.94 49.07 7234.16 7304.62 4087.34 4296.77 4175.48 2039.16 3643.69 0.79 5933162.89 701164. 65 N 70.22129558 W 148.37684807 9365.44 59.57 49.03 7282.28 7352.74 4163.01 4379.29 4256.31 2093.25 3706.01 0.39 5933218.58 701225. 54 N 70.22144325 W 148.37634508 9460.88 59.31 48.76 7330.80 7401.26 4238.28 4461.47 4336.83 2147.28 3767.94 0.37 5933274.21 701286. 02 N 7022159077 W 148.37584530 9556.28 59.21 48.91 7379.56 7450.02 4313.35 4543.47 4417.22 2201.25 3829.66 0.17 5933329.77 701346. 31 N 7022173813 W 148.37534711 9651.61 59.30 49.66 7428.30 7498.76 4388.61 4625.40 4497.72 2254.69 3891.76 0.68 5933384.82 701406. 99 N 70.22188405 W 148.37484590 SurveyEditor Ver SP 2.1 Bld( doc40x_100 ) 12-05\12-05\12-05A\12-05A Generated 8/21/2007 2:38 PM Page 3 of 6 P Comments Measured ~nclination Azimuth Sub-Sea ND ND Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft ft ft ft ft ft de 100 it ftUS ftUS k1/4tl.b1 b`J..iU 4y.yU /4/p./b /b4/.Ll 44bJ.i5b 4/U/.UU 4D/25.V/ LJU/.Jtl 6~D4.U/ U.LL Jy3343y.IL /V140/.by IV /U.CLNC/~I VV 14Z5.6/4343UJ 9841. 22 59.37 50.12 7525.05 7595.51 4539.08 4788.46 4658.38 2359.74 4016.49 0.21 5933493.09 701528.91 N 70.22217085 W 148.37383927 9936. 51 59.75 50.53 7573.33 7643.79 4615.13 4870.62 4739.49 2412.19 4079.72 0.54 5933547.17 701590.75 N 70.22231405 W 148.37332891 10030. 64 60.14 50.47 7620.47 7690.93 4690.64 4952.09 4820.00 2464.01 4142.59 0.42 5933600.62 701652.23 N 70.22245553 W 148.37282150 10125. 34 59.56 50.71 7668.04 7738.50 4766.58 5033.98 4900.97 2516.00 4205.86 0.65 5933654.24 701714.12 N 70.22259747 W 148.37231085 10219. 67 59.33 50.46 7715.99 7786.45 4841.91 5115.21 4981.31 2567.57 4268.61 0.33 5933707.44 701775.50 N 70.22273827 W 148.37180431 10313. 93 59.44 50.46 7764.00 7834.46 4917.07 5196.33 5061.56 2619.22 4331.17 0.12 5933760.70 701836.68 N 70.22287926 W 148.37129937 10408. 52 59.78 49.92 7811.85 7882.31 4992.52 5277.92 514224 2671.46 4393.85 0.61 5933814.56 701897.97 N 70.22302188 W 148.37079346 10501. 35 60.43 49.66 7858.12 7928.58 5066.73 5358.40 5221.76 2723.41 4455.31 0.74 5933868.10 701958.04 N 70.22316372 W 148.37029738 10596. 27 60.28 54.44 7905.09 7975.55 5143.96 5440.89 5303.69 2774.13 4520.33 4.38 5933920.50 702021.71 N 70.22330216 W 148.36977254 10689. 27 58.99 57.18 7952.10 8022.56 5220.78 5521.12 5383.84 2819.22 4586.69 2.90 5933967.31 702086.86 N 70.22342524 W 148.36923696 ~ 10783. 74 59.31 58.80 8000.55 8071.01 5299.27 5602.23 5464.93 2862.21 4655.46 1.51 5934012.08 702154.48 N 70.22354256 W 148.3686 10877. 98 59.33 59.42 8048.63 8119.09 5378.10 5683.27 5545.98 2903.82 4725.01 0.57 5934055.49 702222.91 N 70.22365612 W 148.36812056 10972. 51 60.05 63.18 8096.35 8166.81 5458.12 5764.87 5627.46 2942.99 4796.58 3.52 5934096.52 702293.43 N 70.22376301 W 148.36754295 11067. 16 59.58 66.43 8143.95 8214.41 5539.17 5846.69 5708.77 2977.82 4870.59 3.01 5934133.27 702366.50 N 70.22385803 W 148.36694561 11160. 37 60.33 67.69 8190.62 8261.08 5619.48 5927.37 5788.58 3009.26 4944.89 1.42 5934166.65 702439.95 N 70.22394380 W 148.36634596 11256. 09 59.36 69.15 8238.71 8309.17 5702.02 6010.13 5870.16 3039.70 5021.85 1.66 5934199.09 702516.08 N 70.22402683 W 148.36572489 11351. 20 59.71 68.24 8286.93 8357.39 5783.82 6092.11 5950.94 3069.49 5098.23 0.90 5934230.87 702591.65 N 70.22410807 W 148.36510852 11441. 29 60.55 68.35 8331.80 8402.26 5861.72 6170.23 6028.04 3098.38 5170.81 0.94 5934261.65 702663.44 N 70.22418686 W 148.36452275 11541. 34 60.39 68.01 8381.11 8451.57 5948.52 6257.29 6114.01 3130.74 5251.63 0.34 5934296.10 702743.38 N 70.22427510 W 148.36387052 11634. 45 6028 69.18 8427.19 8497.65 6029.23 6338.19 6193.84 3160.27 5326.95 1.10 5934327.59 702817.90 N 70.22435562 W 148.36326262 11729. 03 60.83 69.68 8473.69 8544.15 6111.47 6420.55 6274.94 3189.20 5404.06 0.74 5934358.53 702894.22 N 7022443453 W 148.36264030 11823. 88 60.81 70.78 8519.93 8590.39 6194.21 6503.37 6356.31 321721 5481.99 1.01 5934388.57 702971.39 N 70.22451090 W 148.36201137 11918. 55 59.78 71.18 8566.85 8637.31 6276.41 6585.59 6436.94 3244.01 5559.73 1.15 5934417.40 703048.40 N 70.22458396 W 148.36138399 12003. 35 59.23 72.14 8609.88 8680.34 6349.47 6658.66 6508.45 3267.01 5629.09 1.17 5934442.19 703117.12 N 70.22464663 W 148.36082426 12059. 04 60.60 73.09 8637.80 8708.26 6397.65 6706.85 6555.46 3281.40 5675.07 2.87 5934457.79 703162.71 N 70.22468586 W 148.36045314 12090. 25 66.67 73.63 8651.65 8722.11 6425.60 6734.80 6582.65 3289.40 5701.85 19.51 5934466.49 703189.27 N 70.22470766 W 148.36023701 12122. 86 73.24 77.61 8662.83 8733.29 6456.17 6765.42 6612.13 3296.98 5731.51 23.18 5934474.84 703218.72 N 70.22472831 W 148.35999768 12154. 72 80.65 77.98 8670.02 8740.48 6487.05 6796.43 6641.68 3303.54 5761.82 23.29 5934482.19 703248.85 N 70.22474616 W 148.3597 12185. 72 87.63 79.41 8673.18 8743.64 6517.69 6827.25 6670.91 3309.58 5792.04 22.98 5934489.01 703278.9Q ~ N 70.22476259 W 148.3595 12219. 07 95.50 79.99 8672.27 8742.73 6550.75 6860.56 6702.33 3315.53 5824.82 23.66 5934495.82 703311.51 N 70.22477880 W 148.35924471 12250. 00 102.83 81.82 8667.35 8737.81 6580.94 6891.08 6730.91 3320.36 5854.95 24.41 5934501.44 703341.50 N 70.22479192 W 148.35900159 12258. 06 103.62 80.21 8665.50 8735.96 6588.70 6898.92 6738.26 3321.59 5862.70 21.78 5934502.87 703349.21 N 70.22479525 W 148.35893905 12282. 94 98.81 82.84 8660.66 8731.12 6612.79 6923.32 6761.03 3325.18 5886.83 21.94 5934507.09 703373.24 N 70.22480501 W 148.35874434 12313. 87 93.83 90.32 8657.26 8727.72 6642.59 6954.05 6788.63 3327.00 5917.48 28.92 5934509.71 703403.83 N 70.22480992 W 148.35849698 12331. 36 92.74 95.45 8656.25 8726.71 6658.96 6971.51 6803.40 3326.12 5934.91 29.94 5934509.29 703421.28 N 70.22480749 W 148.35835633 12368. 90 90.97 104.20 8655.04 8725.50 6692.27 7009.03 6832.53 3319.72 5971.85 23.77 5934503.86 703458.37 N 70.22478993 W 148.35805838 12399. 72 90.08 108.96 8654.75 8725.21 6717.81 7039.85 6854.11 3310.93 6001.38 15.71 5934495.85 703488.11 N 70.22476585 W 148.35782019 12432. 59 90.32 112.10 8654.64 8725.10 6743.72 7072.72 6875.53 3299.40 6032.15 9.58 5934485.13 703519.18 N 70.22473429 W 148.35757193 12464. 72 91.87 114.11 8654.02 8724.48 6768.13 7104.84 6895.45 3286.80 6061.70 7.90 5934473.30 703549.05 N 70.22469979 W 148.35733363 12496. 45 91.04 115.83 8653.22 8723.68 6791.55 7136.56 6914.39 3273.41 6090.45 6.02 5934460.67 703578.14 N 70.22466315 W 148.35710172 ) SurveyEditor Ver SP 2.1 Bld( doc40x_100 ) 12-05\12-05\12-05A\12-05A Generated 8/21/2007 2:38 PM Page 4 of 6 ~ Comments Measured Inclination Azimuth Sub-Sea TVD ND Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft ft ft ft ft ft de 100 ft ftUS ftUS 12528.99 90. 29 118.71 8652. 84 8723.30 6814.67 7169.10 6932.86 3258.50 6119.37 ' 9.15 5934446 .53 703607.43 N 70.22462236 W 148.35686850 12560.56 90. 05 121.34 8652. 75 8723.21 6836.01 7200.67 6949.61 3242.71 6146.70 8.37 5934431 .45 703635.17 N 70.22457915 W 148.35664808 12592.05 90. 01 123.41 8652. 73 8723.19 6856.33 7232.16 6965.32 3225.85 6173.30 6.57 5934415 .30 703662.19 N 70.22453302 W 148.35643363 12623.97 90. 08 124.80 8652. 71 8723.17 6876.18 7264.08 6980.51 3207.95 6199.72 4.36 5934398 .10 703689.08 N 7022448407 W 148.35622050 12655.24 90. 36 124.49 8652. 59 8723.05 6895.39 7295.35 6995.24 3190.17 6225.45 1.34 5934381 .00 703715.26 N 70.22443545 W 148.35601306 12687.62 89. 77 124.43 8652. 55 8723.01 6915.37 7327.73 7010.71 3171.85 6252.15 1.83 5934363 .39 703742.43 N 70.22438533 W 148.35579778 12720.12 89. 09 124.39 8652. 87 8723.33 6935.45 7360.23 7026.37 3153.49 6278.96 2.10 5934345 .73 703769.71 N 70.22433510 W 148.35558158 12751.05 89. 26 124.75 8653. 32 8723.78 6954.48 7391.15 7041.30 3135.94 6304.43 1.29 5934328 .85 703795.62 N 70.22428710 W 148.35537623 12782.54 89. 43 124.54 8653. 68 8724.14 6973.83 7422.64 7056.57 3118.04 6330.33 0.86 5934311 .64 703821.99 N 70.22423814 W 148.35516734 12815.00 89. 40 124.53 8654. 01 8724.47 6993.83 7455.10 7072.49 3099.64 6357.07 0.10 5934293 .95 703849.20 N 70.22418781 W 148.35495173 12847.97 89. 53 124.51 8654. 32 8724.78 7014.14 7488.07 7088.77 3080.95 6384.23 0.40 5934275 .98 703876.84 N 70.22413670 W 148.3547~ 12879.10 89. 67 124.83 8654. 53 8724.99 7033.26 7519.20 7104.19 3063.25 6409.83 1.12 5934258 .95 703902.89 N 70.22408827 W 148.3545 12911.51 89. 23 125.18 8654. 84 8725.30 7053.01 7551.61 7120.18 3044.65 6436.38 1.73 5934241 .06 703929.91 N 70.22403742 W 148.35431221 12943.74 89. 26 125.69 8655. 27 8725.73 7072.46 7583.83 7135.98 3025.97 6462.64 1.58 5934223 .07 703956.65 N 70.22398631 W 148.35410049 12974.78 88. 20 126.33 8655. 96 8726.42 7090.94 7614.87 7151.03 3007.73 6487.74 3.99 5934205 .49 703982.22 N 70.22393641 W 148.35389809 13006.93 88. 40 125.80 8656. 91 8727.37 7110.06 7647.00 7166.69 2988.81 6513.72 1.76 5934187 .26 704008.68 N 70.22388466 W 148.35368863 13039.20 88. 51 126.64 8657. 78 8728.24 7129.17 7679.26 7182.45 2969.75 6539.74 2.62 5934168 .89 704035.19 N 70.22383253 W 148.35347880 13070.94 87. 24 127.22 8658. 96 8729.42 7147.65 7710.98 7197.71 2950.69 6565.10 4.40 5934150 .50 704061.04 N 70,22378041 W 148.35327438 13102.17 87. 34 127.49 8660. 43 8730.89 7165.63 7742.17 7212.62 2931.76 6589.89 0.92 5934132 .23 704086.32 N 70.22372864 W 148.35307445 13134.41 87. 61 128.18 8661. 86 8732.32 7183.98 7774.38 7227.89 2912.01 6615.33 2.30 5934113 .15 704112.26 N 70.22367460 W 148.35286936 13166.11 87. 79 128.25 8663. 13 8733.59 7201.85 7806.06 7242.82 2892.41 6640.22 0.61 5934094 .21 704137.65 N 70.22362101 W 148.35266871 13198.63 88. 13 127.66 8664. 28 8734.74 7220.31 7838.56 7258.39 2872.42 6665.84 2.09 5934074 .90 704163.79 N 70.22356635 W 148.35246211 13229.77 87. 96 127.47 8665. 35 8735.81 7238.15 7869.68 7273.59 2853.45 6690.51 0.82 5934056 .58 704188.95 N 70.22351445 W 148.35226322 13261.75 86. 86 128.30 8666. 79 8737.25 7256.33 7901.62 7289.14 2833.83 6715.72 4.31 5934037 .63 704214.66 N 70.22346079 W 148.35205993 13294.69 87. 06 128.77 8668. 54 8739.00 7274.74 7934.52 7304.94 2813.34 6741.45 1.55 5934017 .82 704240.92 N 7022340475 W 148.35185249 13326.08 87. 24 128.71 8670. 10 8740.56 7292.19 7965.87 7320.00 2793.72 6765.91 0.60 5933998 .85 704265.88 N 70.22335109 W 148.35165534 13357.12 87. 34 129.23 8671. 57 8742.03 7309.34 7996.87 7334.89 2774.22 6790.01 1.70 5933979 .99 704290.48 N 70.22329776 W 148.35146100 13390.15 87. 58 128.97 8673. 03 8743.49 7327.53 8029.87 7350.78 2753.41 6815.62 1.07 5933959 .86 704316.63 N 70.22324084 W 148.35125456 13422.11 87. 68 129.44 8674. 35 8744.81 7345.09 8061.80 7366.21 2733.23 6840.37 1.50 5933940 .33 704341.89 N 70.22318564 W 148.3510~ 1345326 88. 03 129.31 8675. 52 8745.98 7362.13 8092.93 738128 2713.48 6864.43 1.20 5933921 .22 704366.46 N 70.22313163 W 148.3508 13484.81 88. 33 129.55 8676. 52 8746.98 7379.36 8124.47 7396.62 2693.45 6888.78 1.22 5933901 .84 704391.33 N 70.22307685 W 148.35066473 13516.40 88. 16 129.17 8677. 49 8747.95 7396.65 8156.04 7412.12 2673.42 6913.20 1.32 5933882 .46 70441626 N 70.22302209 W 148.35046791 13548.83 87. 58 128.54 8678. 69 8749.15 7414.63 8188.45 7428.38 2653.09 6938.43 2.64 5933862 .80 704442.01 N 70.22296648 W 148.35026446 13580.89 87. 41 129.05 8680. 09 8750.55 7432.44 8220.48 7444.58 2633.03 6963.40 1.68 5933843 .39 704467.49 N 70.22291159 W 148.35006321 13612.19 87. 61 128.67 8681. 45 8751.91 7449.79 8251.75 7460.46 2613.41 6987.75 1.37 5933824 .42 704492.35 N 70.22285793 W 148.34986691 13644.19 87. 65 128.74 8682 .78 8753.24 7467.60 8283.72 7476.88 2593.41 7012.70 0.25 5933805 .08 704517.81 N 70.22280325 W 148.34966577 13676.11 87. 90 129.43 8684. 02 8754.48 7485.19 8315.62 7493.18 2573.30 7037.46 2.30 5933785 .63 704543.08 N 70.22274825 W 148.34946618 13708.49 90. 77 128.35 8684. 39 8754.85 7503.14 8347.99 7509.91 2552.98 7062.65 9.47 5933765 .97 704568.81 N 70.22269266 W 148.34926304 13739.67 92. 17 127.18 8683 .59 8754.05 7520.93 8379.16 7526.64 2533.89 7087.29 5.85 5933747 .54 704593.93 N 70.22264045 W 148.34906441 13771.60 92. 38 127.65 8682 .33 8752.79 7539.29 8411.07 7544.02 2514.51 7112.63 1.61 5933728 .82 704619.77 N 70.22258742 W 148.34886012 > SurveyEditor Ver SP 2.1 Bld( doc40x_100 ) 12-05\12-05\12-05A\12-05A Generated 8/21/2007 2:38 PM Page 5 of 6 Comments Measured Inclination Azimuth Sub-Sea ND ND Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitode Depth Section Departure ft de de ft ft ft ft ft ft ft de 100 ft ftUS fiUS ~.~t$U.~.~y y~.UtS 1L/.ll 25b231..5/ 25/JI.i5.5 /~~/.~4 644C./4 /JOI.J~ G4~~.GO / iJ/.OV V.4Y ;.aaaai iv.cv 13834.71 90.12 127.95 8681.04 8751,50 7575.57 8474.16 7578.64 2476.14 7162.72 4.06 5933691.78 13866.74 90.36 128.28 8680.91 8751.37 7593.69 8506.19 7596.05 2456.37 7187.92 1.27 5933672.68 13899.21 89.50 127.94 8680.95 8751.41 7612.06 8538.66 7613.79 2436.33 7213.47 2.85 5933653.31 13930.62 88.64 127.62 8681.46 8751.92 7629.97 8570.06 7631.20 2417.09 7238.29 2.92 5933634.73 13962.88 89.02 127.39 8682.11 8752.57 7648.50 8602.32 7649.29 2397.45 7263.88 1.38 5933615.77 13994.72 89.29 127.76 8682.58 8753.04 7666.75 8634.15 7667.21 2378.04 7289.11 1.44 5933597.03 14025.49 89.16 128.11 8683.00 8753.46 7684.23 8664.92 7684.46 2359.12 7313.37 1.21 5933578.75 14058.56 88.57 129.02 8683.65 8754.11 7702.72 8697.98 7702.78 2338.51 7339.23 3.28 5933558.83 Last MWD+IFR+MS 14089.85 88.88 129.21 8684.35 8754.81 7719.96 8729.27 7719.96 2318.78 7363.50 1.16 5933539.74 TD ( Projected ) 14147.00 88.88 129.21 8685.47 8755.93 7751.37 8786.40 7751.49 2282.65 7407.77 0.00 5933504.79 Survey Type: Definitive S urvey NOTES: CB GYRO MS -( Camera-based gyro multishot -- Traditional optically referenced gyro surveys run on wireline - including "level rotor" gyros and Sperry-Sun SU3. Replaces ex-BP "PGMS" model.) INC+TREND -( Inclinometer + known azi trend -- Inclination only surveys in near-vertical hole-where formation dip and experien ce enables direction of drift to be predicted. Replaces ex-BP "Inclinometer (azimuth in known quadrant)" model. MWD + IFR + MS -( In-field referenced MWD with mult-station analysis and correction applied in post-processing. Assumes a BHA sag correction is applied to enhance inclinat ion accuracy. ) Leqal Description: Northing (Y) [RUS] Easting (X) [ftUS] Surface : 698 FSL 27 FEL S18 T10N R15E UM 5931029.18 697575.79 BHL : 2977 FSL 3171 FEL S16 T10N R15E UM 5933504.79 704920.86 704670.84 N 70.22248247 W 148.34845635 704696.55 N 70.22242840 W 148.34825319 704722.61 N 70.22237358 W 148.34804724 704747.93 N 70.22232096 W 148.34784714 704774.02 N 70.22226724 W 148.34764087 704799.75 N 70.22221414 W 148.34743746 704824.50 N 70.22216240 W 148.34724184 704850.88 N 70.22210602 W 148.34703345 704875.66 N 70.22205204 W 148.34683780 704920.86 N 70.22195324 W 148.34648091 ~ u SurveyEditor Ver SP 2.1 Bld( doc40x_100 ) 12-05\12-05\12-OSA\12-05A Generated 8/21/2007 2:38 PM Page 6 of 6 ^ f TREE= 4-1/16" CAMERON W~IHEAD 13-5/8" McEVOY~ ACTUATOR- BAKER~ KB. ELEV = 70.4'~ BF. ELEV =_ . NAI KOP= I Max Angle = 104 @ 12258'I Datum MD = ~ Datum ND = ~8800' SS~ ~ ~ ~ ~ ~ ~.., I 13-3/8" CSG, 72#, N-80, ID = 12.347" ~ 2727' 7" LNR TIE-BACK SEAL ASSY 5538~ 7" LNR, 26#, L-80 TCII, ID = 6.276" 5539~ Minimum ID = 3.725" ~ BAKER WHIPSTOCK ~-~ 5719~ 9-5/8" EZSV RETAINER 5724' 7" Liner lost in hole 5737 - 11873 ~ ~ BAKER WHIPSTOCK ~~ 6091, 9-5/8" EZSV RETAINER 6095~ TOP OF 7-5/8" LNR 6422~ 4-1/2" TBG-PC, 12.6#, L-80, .0152 bpf, ID = 3.958" 10137~ 7-5/8" LNR, 29.7#, L-80, .0459 bpf, ID = 6.875" ~ 10970~ 9-5/8" CSG, 47#, S-95, ID = 8.681" 11086~ PERFORATION SUMMARY REF LOG: BHCS ON 11/16l79 ANGLE AT TOP PERF: 87° @13300" Note: Refer to Production DB for historical perf data SIZE SPF INTERVAL Opn/Sqz DATE 2 7/8 6 13300-13610 O 07/28/07 2 7/8 6 13730-13770 O 07/28/07 2 7/8 6 13770-14050 O 07/28/07 4-1/2" TBG, 12.6#, - 9CR, ID=3.958" 7" LNR, 26#, L-80, ID = 6.276" PBTD I 11897' I I 12066' I 4-1/2" LNR, 12.6#, L-80 , ID = 3.958" ~~~ ~ 14145' ( 14147' 11779~ -j4-1/2" HES X NIP ID = 3.813" 118~ 4-1/2" BKR S-3 PKR ~ TCII, ID = 3.87" ~ 11865~ 4-1/2" HES X NIP ID = 3.813" 11886~ 4-1/2" HES XN NIP ID=3.813" 11892~ 5-1/4" "HR" ZXP LTP, ID = 4.35" 11899~ 4-1/2" WLEG ID = 3.958" ~ ELMD TT NOT LOGGED 11914~ 7" X 5" BAKER'HMC' LNR HGR, ID = 4.37" DATE REV BY COMMENTS DATE REV BY COMMENTS 11/24/79 ORIGINAL COMPLETION 12/73/90 LAST WORKOVER 08/01/07 SIDETRACK 08/03/07 SV DRLG CORRECTIONS PRUDHOE BAY UNfi' WELL: 12-05A PERMff No: ~2070530 API No: 50-029-20391-01 SEC 17, T10N, R15E, 817.45' FEL & 3358.43' FNL BP F~cploration (Alaska) 12-05A 4-1/2" HES X NIP, ID = 3.813" GAS LIFT MANDRELS ST MD TVD DEV TYPE VLV LATCH PORT DATE 5 3343 3338 10 KBG-2 DMY BK 0 07/28/07 4 5089 4799 44 KBG-2 DCK BEK 0 07/28/07 3 6709 5967 45 KBG-2 DMY BK 0 07/28(07 2 8285 6802 59 KBG-2 DMY BK 0 07/28/07 1 9737 7542 59 KBG-2 DMY BK 0 07/28/07 5539~ -17" ZXP Liner Top Packer, ID = 6.20" ~ MILLOUT WINDOW (12-05A) 5702' - 5719' i ~ ~ Q ~ 1 P ~t v SCHLUMBERGER Survey report Client ...................: BP Exploration (Alaska)Inc. Field ....................: Prudhoe Bay Well .....................: 12-05A API number ...............: 50-029-20391-01 Engineer .................: NK/JH/TK NSB ......................: 7-ES STATE :...................: AK ----- Survey calculation methods------------- Method for positions.....: Minimum curvature Method for DLS...........: Mason & Taylor ----- Depth reference ----------------------- Permanent datum..........: Mean Sea Level Depth reference..........: Driller's Pipe Tally GL above permanent.......: 31.06 ft KB above permanent.......: N/A Top Drive DF above permanent.......: 70.46 ft ----- Vertical section origin---------------- Latitude (+N/S-).........: 0.00 ft Departure (+E/W-)........: 0.00 ft ----- Platform reference point--------------- Latitude (+N/S-).........: -999.25 ft Departure (+E/W-)........: -999.25 ft Azimuth from Vsect Origin to target: 72.56 degrees 26-Ju1-2007 18:23:06 Page 1 of 8 Spud date ................: 25-Jun-07 Last survey date.........: 26-Ju1-07 Total accepted surveys...: 197 I~ID of first survey.......: 0.00 ft MD of last survey........: 14147.00 ft ----- Geomagnetic data ---------------------- Magnetic model...........: BGGM version 2006 Magnetic date ............: 20-Ju1-2007 Magnetic field strength..: 57670.32 G~ Magnetic dec (+E/W-).....: 23.97 degrees Magnetic dip .............: 80.93 degrees ----- MWD survey Reference Criteria --------- Reference G ..............: 1002.67 mGal Reference H ............... 57670.50 GAMA Reference Dip ............: 80.93 degrees Tolerance of G...........: (+/-) 2.50 mGal Tolerance of H...........: (+/-)300.00 GAMA Tolerance of Dip.........: (+/-) 0.45 degrees ----- Corrections ------------------- Magnetic dec (+E/W-).....: 23.97 degrees Grid convergence (+E/W-).: 0.00 degrees Total az corr (+E/W-)....: 23.97 degrees (Total az corr = magnetic dec - grid conv) Survey Correction Type .... I=Sag Corrected Inclination M=Schlumberger Magnetic Correction S=Shel1 Magnetic Correction F=Failed Axis Correction R=Magnetic Resonance Tool Correction D=Dmag Magnetic Correction ~ ~ P I SCHLUMBERGER Survey Report 26 -Ju1-2007 18:23:06 Page 2 of 8 Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - (ft) (deg) (deg) (ft) (ft) (ft) (ft) (ft) (ft) (deg) 100f) type (deg) 1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 2 1.00 0.00 0.00 1.00 1.00 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 3 97.46 0.00 0.00 96.46 97.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 4 197.46 0.00 0.00 100.00 197.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 5 297.46 0.00 0.00 100.00 297.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 6 397.46 0.00 0.00 100.00 397.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 7 497.46 0.00 0.00 100.00 497.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 8 597.46 0.00 0.00 100.00 597.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS . 9 697.46 0.00 0.00 100.00 697.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 10 797.46 0.00 0.00 100.00 797.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 11 897.46 0.00 0.00 100.00 897.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 12 997.46 0.00 0.00 100.00 997.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 13 1097.46 0.00 0.00 100.00 1097.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 14 1197.46 0.00 0.00 100.00 1197.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 15 1297.46 0.00 0.00 100.00 1297.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 16 1397.46 0.00 0.00 100.00 1397.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 17 1497.46 0.00 0.00 100.00 1497.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 18 1597.46 0.00 0.00 100.00 1597.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 19 1697.46 0.00 0.00 100.00 1697.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 20 1797.46 0.00 0.00 100.00 1797.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 21 1897.46 0.00 0.00 100.00 1897.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 22 1997.46 0.00 0.00 100.00 1997.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 23 2097.46 0.00 0.00 100.00 2097.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 24 25 2197.46 2297.46 3.00 4.00 114.00 123.00 100.00 100.00 2197.41 2297.23 1.96 6.15 -1.06 -4.03 2.39 7.71 2.62 8.70 114.00 117.60 3.00 1.14 BP BP _CB _CB GYRO GYRO MS MS ~ 26 2397.46 5.00 134.00 100.00 2396.92 10.45 -8.96 13.77 16.42 123.04 1.32 BP CB GYRO MS 27 2497.46 5.50 133.00 100.00 2496.5Q 14.90 -15.25 20.41 25.48 126.77 0.51 BP _CB GYRO MS 28 2597.46 5.00 133.00 100.00 2596.08 19.41 -21.49 27.10 34.59 128.42 0.50 BP CB GYRO MS 29 2697.46 4.00 157.00 100.00 2695.78 21.90 -27.67 31.65 42.04 131.17 2.11 BP _CB GYRO MS 30 2797.46 4.00 147.00 100.00 2795.54 23.17 -33.81 34.91 48.60 134.08 0.70 BP CB GYRO MS [(c)2007 IDEAL ID12_OC_09] SCHLUMBERGER Survey Report 26-Ju1-2007 18:23:06 --- Seq -------- Measured ------ Incl ------- Azimuth ------ Course -------- TVD -------- Vertical # depth angle angle length depth section - (ft) (deg) (deg) (ft) (ft) (ft) 31 2897.46 4.25 122.00 100.00 2895.29 26.52 32 2997.46 4.50 94.00 100.00 2995.01 32.58 33 3097.46 5.00 78.00 100.00 3094.67 40.57 34 3197.46 b.50 74.00 100.00 3194.16 50.57 35 3297.46 9.00 72.00 100.00 3293.24 64.05 36 3397.46 11.00 70.00 100.00 3391.72 81.40 37 3497.46 13.00 70.00 100.00 3489.53 102.17 38 3597.46 16.00 69.00 100.00 3586.33 127.17 39 3697.46 18.00 68.00 100.00 3681.95 156.33 40 3797.46 20.00 70.00 100.00 3776.50 188.82 41 3897.46 24.75 70.00 100.00 3868.95 226.84 42 3997.46 28.25 72.00 100.00 3958.43 271.43 43 4097.46 30.50 66.00 100.00 4045.59 320.32 44 4197.46 34.00 68.00 100.00 4130.15 373.42 45 4297.46 38.00 68.00 100.00 4211.03 432.00 46 4397.46 42.00 67.00 100.00 4287.62 496.01 47 4497.46 40.00 68.00 100.00 4363.09 561.36 48 4597.46 42.50 68.00 100.00 4438.27 627.08 49 4697.46 42.50 68.00 100.00 4512.00 694.42 50 4797.46 42.25 68.00 100.00 4585.87 761.61 51 4897.46 43.00 68.00 100.00 4659.45 829.11 52 4997.46 43.75 69.00 100.00 4732.14 897.62 53 5097.46 43.50 70.00 100.00 4804.53 966.51 54 5197.46 44.00 72.00 100.00 4876.77 1035.63 55 5297.46 45.00 72.00 100.00 4948.09 1105.71 56 5397.46 44.50 72.00 100.00 5019.11 1176.21 57 5497.46 44.25 73.00 100.00 5090.59 1246.05 58 5597.46 44.00 73.00 100.00 5162.37 1315.67 59 5697.46 43.25 73.00 100.00 5234.76 1384.66 60 5702.00 43.29 73.06 4.54 5238.06 1387.77 -------------- Displ Displ +N/S- +E/W- (ft) (ft) -38.70 39.95 -40.94 47.01 -40.30 55.19 -37.84 64.89 -33.86 77.77 -28.18 94.18 -21.07 113.71 -12.28 137.16 -1.55 164.35 10.08 194.75 23.10 230.51 37.58 272.70 55.22 318.41 76.02 367.53 98.04 422.02 122.65 481.38 147.77 541.99 172.46 603.11 197.77 665.75 223.02 728.24 248.39 791.03 273.55 854.93 297.72 919.55 320.22 984.93 341.88 1051.59 363.64 1118.55 384.67 1185.24 405.02 1251.82 425.19 1317.80 426.10 1320.78 Page 3 of 8 Total At displ Azim (ft) (deg) 55.62 134.09 62.34 131.05 68.34 126.14 75.12 120.25 84.82 113.53 98.30 106.66 115.65 100.50 137.70 95.12 164.36 90.54 195.01 87.04 231.67 84.28 275.28 82.15 323.16 80.16 375.31 78.31 433.26 76.92 496.76 75.71 561.77 74.75 627.29 74.04 694.51 73.46 761.63 72.97 829.11 72.57 897.63 72.26 966.55 72.06 1035.68 71.99 1105.77 71.99 1176.17 71.99 1246.10 72.02 1315.71 72.07 1384.70 72.12 1387.81 72.12 ----- ----- ------ DLS Srvy Tool (deg/ tool Corr 100f) type (deg) 1.80 BP_CB GYRO MS 2.13 BP_CB GYRO MS 1.41 BP_CB GYRO MS 1.55 BP_CB GYRO MS 2.51 BP_CB GYRO MS 2.03 BP_CB GYRO MS 2.00 BP_CB GYRO MS 3.01 BP_CB GYRO MS 2.02 BP_CB GYRO MS 2.10 BP_CB GYRO MS 4.75 BP_CB GYRO MS 3.61 BP_CB GYRO MS 3.70 BP_CB GYRO M5 3.66 BP_CB GYRO MS 4.00 BP_CB GYRO MS 4.05 BP_CB GYRO MS 2.10 BP_CB GYRO MS 2.50 BP_CB GYRO MS 0.00 BP_CB GYRO MS 0.25 BP_CB GYRO MS 0.75 BP_CB GYRO MS 1.02 BP_CB GYRO MS 0.73 BP_CB GYRO MS 1.47 BP_CB GYRO MS 1.00 BP_CB GYRO MS 0.50 BP_CB GYRO MS 0.74 BP_CB GYRO MS 0.25 BP_CB GYRO MS 0.75 BP_CB GYRO MS 1.26 BP_CB GYRO MS . ~ [(C)2007 IDEAL ID12_OC_09] , . SCHLUMBERGER Survey Report 26-Ju1-2007 18:23:06 Page 4 of 8 Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ - (ft) (deg) (deg) (ft) (ft) (ft) (ft) (ft) (ft) (deg) 100f) 61 5719.00 45.93 72.13 17.00 5250.16 1399.71 429.67 1332.17 1399.75 72.12 16.00 62 5746.00 46.00 72.00 27.00 5268.93 1419.12 435.65 1350.64 1419.16 72.12 0.43 63 5779.04 42.66 72.00 33.04 5292.56 1442.20 442.79 1372.59 1442.24 72.12 10.11 64 5876.89 43.37 75.00 97.85 5364.11 1508.93 461.73 1436.58 1508.96 72.18 2.21 65 5960.95 45.03 73.50 84.06 5424.38 1567.50 477.65 1492.98 1567.52 72.26 2.33 66 6004.67 44.12 72.00 43.72 5455.52 1598.18 486.74 1522.28 1598.20 72.27 3.18 67 6063.23 44.34 70.00 58.56 5497.48 1639.01 500.04 1560.90 1639.04 72.24 2.41 68 6156.90 44.14 72.50 93.67 5564.60 1704.33 521.04 1622.77 1704.37 72.20 1.87 69 6251.28 44.09 75.50 94.38 5632.36 1770.00 539.15 1685.91 1770.02 72.27 2.21 70 6346.27 42.46 73.00 94.99 5701.53 1835.07 556.80 1748.57 1835.08 72.34 2.49 71 6440.34 42.00 70.00 94.07 5771.19 1898.27 576.85 1808.52 1898.29 72.31 2.20 72 6534.58 42.75 70.91 94.24 5840.81 1961.74 598.10 1868.37 1961.77 72.25 1.03 73 6630.54 43.53 69.11 95.96 5910.83 2027.28 620.53 1930.03 2027.33 72.18 1.52 74 6726.85 45.54 68.46 96.31 5979.48 2094.68 644.98 1992.99 2094.76 72.07 2.14 75 6819.76 49.71 63.28 92.91 6042.11 2162.78 673.11 2055.53 2162.94 71.87 6.09 76 6915.41 54.95 58.51 95.65 6100.56 2236.84 710.00 2121.57 2237.23 71.50 6.75 77 7009.77 58.76 53.41 94.36 6152.17 2312.48 754.26 2186.95 2313.37 70.97 6.06 78 7103.16 59.39 53.07 93.39 6200.16 2388.08 802.20 2251.13 2389.80 70.39 0.74 79 7198.00 59.61 52.91 94.84 6248.30 2465.08 851.39 2316.39 2467.90 69.82 0.27 80 7292.41 59.90 52.73 94.41 6295.85 2541.84 900.68 2381.37 2546.01 69.28 0.35 81 7384.79 59.91 51.77 92.38 6342.18 2616.80 949.61 2444.57 2622.53 68.77 0.90 82 7478.86 59.54 50.78 94.07 6389.60 2692.49 1000.43 2507.94 2700.12 68.25 0.99 83 7573.16 59.06 49.66 94.30 6437.75 2767.49 1052.31 2570.26 2777.33 67.73 1.14 84 7666.75 59.19 49.02 93.59 6485.77 2841.31 1104.65 2631.19 2853.67 67.23 0.60 85 7761.04 59.53 48.15 94.29 6533.83 2915.44 1158.32 2692.03 2930.65 66.72 0.87 86 7855.44 59.91 47.15 94.40 6581.43 2989.37 1213.23 2752.28 3007.82 66.21 1.00 87 `7949.33 59.43 46.69 93.89 6628.84 3062.43 1268.58 2811.47 3084.42 65.71 0.66 88 8043.65 58.90 46.48 94.32 6677.19 3135.24 1324.24 2870.30 3161.05 65.23 0.59 89 8137.67 58.87 45.70 94.02 6725.77 3207.29 1380.07 2928.29 3237.20 64.77 0.71 90 8232.85 58.55 44.94 95.18 6775.21 3279.61 1437.26 2986.12 3314.00 64.30 0.76 Srvy Tool tool Corr type (deg) BP_BLIND BP_BLIND BP_INC+TREND BP_INC+TREND BP_INC+TREND BP_INC+TREND BP_INC+TREND BP_INC+TREND BP_INC+TREND BP_INC+TREND BP_INC+TREND MWD MWD BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS r~ LJ C~ [(C}2007 IDEAL ID12_OC_09] SCHLUMBERGER Survey Report 26 -Ju1-2007 18:23:06 Page 5 of 8 Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - (ft) (deg) (deg) (ft) (ft) (ft) (ft) (ft) (ft) (deg) 100f) type (deg) 91 8327.13 58.98 45.16 94.28 6824.10 3351.11 1494.21 3043.17 3390.21 63.85 0.50 BP _MWD+IFR+MS 92 8420.25 59.59 45.51 93.12 6871.66 3422.29 1550.49 3100.11 3466.22 63.43 0.73 BP _MWD+IFR+MS 93 8515.76 60.42 46.41 95.51 6919.41 3496.26 1607.98 3159.57 3545.21 63.03 1.19 BP _MWD+IFR+MS 94 8610.24 59.93 48.69 94.48 6966.40 3570.53 1663.31 3220.04 3624.26 62.68 2.16 BP _MWD+IFR+MS 95 8705.36 59.58 48.98 95.12 7014.31 3645.75 1717.39 3281.90 3704.10 62.38 0.45 BP MWD+IFR+MS 96 8799.12 59.03 48.69 93.76 7062.17 3719.56 1770.46 3342.60 3782.53 62.09 0.64 BP _MWD+IFR+MS 97 8894.40 58.77 48.07 95.28 7111.39 3793.99 1824.65 3403.59 3861.83 61.80 0.62 BP _MWD+IFR+MS ~ 98 8989.00 58.50 48.08 94.60 7160.63 3867.50 1878.62 3463.69 3940.35 61.53 0.29 BP _M[nID+IFR+MS 99 9082.23 58.69 47.90 93.23 7209.21 3939.87 1931.87 3522.81 4017.75 61.26 0.26 BP _M[nID+IFR+MS 100 9176.86 59.58 48.33 94.63 7257.76 4013.82 1986.10 3583.29 4096.90 61.00 1.02 BP _MWD+IFR+MS 101 9269.92 59.94 49.07 93.06 7304.62 4087.34 2039.16 3643.69 4175.48 60.77 0.79 BP _MWD+IFR+MS 102 9365.44 59.57 49.03 95.52 7352.74 4163.01 2093.25 3706.01 4256.31 60.54 0.39 BP _MWD+IFR+MS 103 9460.88 59.31 48.76 95.44 7401.26 4238.28 2147.28 3767.93 4336.83 60.32 0.37 BP _MWD+IFR+MS 104 9556.28 59.21 48.91 95.40 7450.02 4313.35 2201.25 3829.66 4417.22 60.11 0.17 BP _MWD+IFR+MS 105 9651.61 59.30 49.66 95.33 7498.76 4388.61 2254.69 3891.76 4497.72 59.91 0.68 BP _MWD+IFR+MS 106 9746.51 59.30 49.90 94.90 7547.21 4463.85 2307.38 3954.07 4578.07 59.73 0.22 BP _MWD+IFR+MS 107 9841.22 59.37 50.12 94.71 7595.51 4539.08 2359.74 4016.49 4658.38 59.57 0.21 BP _MWD+IFR+MS 108 9936.51 59.75 50.53 95.29 7643.79 4615.13 2412.19 4079.72 4739.49 59.41 0.54 BP _MWD+IFR+MS 109 10030.64 60.14 50.47 94.13 7690.93 4690.64 2464.01 4142.59 4820.00 59.26 0.42 BP _MWD+IFR+MS 110 10125.34 59.56 50.71 94.70 7738.50 4766.58 2516.00 4205.85 4900.96 59.11 0.65 BP _MWD+IFR+MS 111 10219.67 59.33 50.46 94.33 7786.45 4841.91 2567.57 4268.61 4981.31 58.97 0.33 BP _MWD+IFR+MS 112 10313.93 59.44 50.46 94.26 7834.46 4917.07 2619.22 4331.17 5061.55 58.84 0.12 BP _MWD+IFR+MS 113 10408.52 59.78 49.92 94.59 7882.31 4992.52 2671.46 4393.85 5142.23 58.70 0.61 BP _MWD+IFR+MS 114 10501.35 60.43 49.66 92.83 7928.57 5066.73 2723.41 4455.31 5221.75 58.56 0.74 BP _MWD+IFR+MS 115 10596.27 60.28 54.44 94.92 7975.54 5143.96 2774.13 4520.33 5303.69 58.46 4.38 BP ~ _MWD+IFR+MS 116 10689.27 58.99 57.18 93.00 8022.56 5220.78 2819.22 4586.68 5383.83 58.42 2.90 BP MWD+IFR+MS 117 10783.74 59.31 58.80 94.47 8071.01 5299.27 2862.21 4655.45 5464.93 58.42 1.51 BP MWD+IFR+MS 118 10877.98 59.33 59.42 94.24 8119.09 5378.10 2903.82 4725.01 5545.98 58.43 0.57 BP MWD+IFR+MS 119 10972.51 60.05 63.18 94.53 8166.81 5458.12 2942.99 4796.57 5627.46 58.47 3.52 BP MWD+IFR+MS 120 11067.16 59.58 66.43 94.65 8214.41 5539.17 2977.81 4870.59 5708.77 58.56 3.01 BP MWD+IFR+MS [(c)2007 IDEAL ID12_OC_09] SCHLUMBERGER Survey Report Seq Measured Incl Azimuth # depth angle angle - (ft) (deg) (deg) 121 11160.37 60.33 67.69 122 11256.09 59.36 69.15 123 11351.20 59.71 68.24 124 11441.29 60.55 68.35 125 11541.34 60.39 68.01 126 11634.45 60.28 69.18 127 11729.03 60.83 69.68 128 11823.88 60.81 70.78 129 11918.55 59.78 71.18 130 12003.35 59.23 72.14 131 12059.04 60.60 73.09 132 12090.25 66.67 73.63 133 12122.86 73.24 77.61 134 12154.72 80.65 77.98 135 12185.72 87.63 79.41 136 12219.07 95.50 79.99 137 12250.00 102.83 81.82 138 12258.06 103.62 80.21 139 12282.94 98.81 82.84 140 12313.87 93.83 90.32 141 12331.36 92.74 95.45 142 12368.90 90.97 104.20 143 12399.72 90.08 108.96 144 12432.59 90.32 112.10 145 12464.72 91.87 114.11 146 12496.45 91.04 115.83 147 12528.99 90.29 118.71 148 12560.56 90.05 121.34 149 12592.05 90.01 123.41 150 12623.97 90.08 124.80 Course length (ft) 93.21 95.72 95.11 90.09 100.05 93.11 94.58 94.85 94.67 84.80 55.69 31.21 32.61 31.86 31.00 33.35 30.93 8.06 24.88 30.93 17.49 37.54 30.82 32.87 32.13 31.73 32.54 31.57 31.49 31.92 26 TVD depth (ft) 8261.08 8309.17 8357.39 8402.26 8451.57 8497.65 8544.15 8590.39 8637.31 8680.34 8708.26 8722.11 8733.29 8740.48 8743.64 8742.73 8737.81 8735.96 8731.12 8727.71 8726.71 8725.49 8725.21 8725.10 8724.48 8723.68 8723.30 8723.21 8723.19 8723.16 Ju1-2007 18:23:06 Vertical Displ Displ section +N/S- +E/W- (ft) (ft) (ft) 5619.48 3009.26 4944.89 5702.02 3039.70 5021.85 5783.81 3069.49 5098.23 5861.72 3098.38 5170.81 5948.52 3130.74 5251.62 6029.23 3160.26 5326.95 6111.47 3189.20 5404.06 6194.21 3217.21 5481.99 6276.41 3244.01 5559.73 6349.47 32b7.00 5629.08 6397.65 3281.40 5675.07 6425.60 3289.40 5701.85 6456.17 3296.98 5731.51 6487.05 3303.54 5761.82 6517.69 3309.57 5792.04 6550.74 3315.53 5824.82 6580.94 3320.36 5854.94 6588.70 3321.58 5862.69 6612.79 3325.18 5886.82 6642.59 3327.00 5917.48 6658.95 3326.12 5934.91 6692.27 3319.72 5971.84 6717.81 3310.93 6001.37 6743.72 3299.40 6032.15 6768.12 3286.80 6061.70 6791.54 3273.41 6090.45 6814.67 3258.50 6119.37 6836.01 3242.71 6146.70 6856.32 3225.85 6173.29 6876.17 3207.95 6199.72 Page Total displ (ft) 5788.57 5870.16 5950.94 6028.04 6114.01 6193.84 6274.94 6356.31 6436.94 6508.45 6555.46 6582.65 6612.13 6641.68 6670.91 6702.33 6730.91 6738.26 6761.03 6788.63 6803.40 6832.53 6854.10 6875.53 6895.45 6914.39 6932.86 6949.61 6965.32 6980.51 6 of 8 At DLS Azim (deg/ (deg) 100f) 58.68 1.42 58.81 1.66 58.95 0.90 59.07 0.94 59.20 0.34 59.32 1.10 59.45 0.74 59.59 1.01 59.74 1.15 59.87 1.17 59.96 2.87 60.02 19.51 60.09 23.18 60.17 23.29 60.26 22.98 60.35 23.66 60.44 24.41 60.47 21.78 60.54 21.94 60.65 28.92 60.73 29.94 60.93 23.77 61.11 15.71 61.32 9.58 61.53 7.90 61.74 6.02 61.97 9.15 62.19 8.37 62.41 6.57 62.64 4.36 Srvy Tool tool Corr type (deg) BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS ~ BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_INC+TREND BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS ~ BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS [(C)2007 IDEAL ID12_OC_09] SCHLUMBERGER Survey Report 26 -Ju1-2007 18:23:06 Page 7 of 8 Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - (ft) (deg) (deg} (ft} (ft) (ft) (ft) (ft) (ft) (deg) 100f) type (deg) 151 12655.24 90.36 124.49 31.27 8723.04 6895.39 3190.17 6225.45 6995.24 62.87 1.34 BP MWD+IFR+MS 152 12687.62 89.77 124.43 32.38 8723.01 6915.37 3171.85 6252.15 7010.70 63.10 1.83 BP _MWD+IFR+MS 153 12720.12 89.09 124.39 32.50 8723.33 6935.44 3153.49 6278.96 7026.36 63.33 2.10 BP _M[n7D+IFR+MS 154 12751.05 89.26 124.75 30.93 8723.77 6954.48 3135.94 6304.42 7041.30 63.55 1.29 BP _MWD+IFR+MS 155 12782.54 89.43 124.54 31.49 8724.13 6973.83 3118.04 6330.33 7056.57 63.78 0.86 BP _MWD+IFR+MS 156 12815.00 89.40 124.53 32.46 8724.47 6993.82 3099.64 6357.07 7072.48 64.01 0.10 BP _MWD+IFR+MS 157 12847.97 89.53 124.51 32.97 8724.77 7014.14 3080.95 6384.23 7088.77 64.24 0.40 BP _MWD+IFR+MS 158 12879.10 89.67 124.83 31.13 8724.99 7033.26 3063.25 6409.83 7104.18 64.46 1.12 BP _MWD+IFR+MS • 159 12911.51 89.23 125.18 32.41 8725.30 7053.01 3044.65 6436.38 7120.17 64.68 1.73 BP _MWD+IFR+MS 160 12943.74 89.26 125.69 32.23 8725.73 7072.46 3025.97 6462.64 7135.98 64.91 1.58 BP _MWD+IFR+MS 161 12974.78 88.20 126.33 31.04 8726.42 7090.94 3007.73 6487.74 7151.02 65.13 3.99 BP _MInID+IFR+MS 162 13006.93 88.40 125.80 32.15 8727.37 7110.05 2988.81 6513.71 7166.69 65.35 1.76 BP MWD+IFR+MS 163 13039.20 88.51 126.64 32.27 8728.24 7129.17 2969.75 6539.74 7182.45 65.58 2.62 BP _MWD+IFR+MS 164 13070.94 87.24 127.22 31.74 8729.42 7147.65 2950.69 6565.09 7197.71 65.80 4.40 BP _MWD+IFR+MS 165 13102.17 87.34 127.49 31.23 8730.89 7165.63 2931.76 6589.89 7212.62 66.02 0.92 BP MWD+IFR+MS 166 13134.41 87.61 128.18 32.24 8732.31 7183.98 2912.01 6615.33 7227.89 66.24 2.30 BP _MWD+IFR+MS 167 13166.11 87.79 128.25 31.70 8733.58 7201.85 2892.41 6640.21 7242.82 66.46 0.61 BP _MWD+IFR+MS 168 13198.63 88.13 127.66 32.52 8734.74 7220.30 2872.42 6665.84 7258.39 66.69 2.09 BP _MWD+IFR+MS 169 13229.77 87.96 127.47 31.14 8735.80 7238.15 2853.45 6690.51 7273.59 66.90 0.82 BP _MWD+IFR+MS 170 13261.75 86.86 128.30 31.98 8737.25 7256.33 2833.83 6715.72 7289.14 67.12 4.31 BP _MWD+IFR+MS 171 13294.69 87.06 128.77 32.94 8739.00 7274.73 2813.34 6741.45 7304.93 67.35 1.55 BP _MWD+IFR+MS 172 13326.08 87.24 128.71 31.39 8740.56 7292.18 2793.72 6765.91 7320.00 67.56 0.60 BP MWD+IFR+MS 173 13357.12 87.34 129.23 31.04 8742.03 7309.34 2774.22 6790.01 7334.89 67.78 1.70 BP MWD+IFR+MS 174 175 13390.15 13422.11 87.58 87.68 128.97 129.44 33.03 31.96 8743.49 8744.81 7327.53 7345.09 2753.41 2733.23 6815.62 6840.36 7350.78 7366.21 68.00 68.22 1.07 1.50 BP_MWD+IFR+MS BP_MWD+IFR+MS ~ 176 13453.26 88.03 129.31 31.15 8745.98 7362.13 2713.48 6864.43 7381.28 68.43 1.20 BP M[nID+IFR+M5 177 13484.81 88.33 129.55 31.55 8746.98 7379.36 2693.45 6888.78 7396.62 68.64 1.22 BP MWD+IFR+MS 178 13516.40 88.16 129.17 31.59 8747.95 7396.65 2673.42 6913.20 7412.12 68.86 1.32 BP MWD+IFR+MS 179 13548.83 87.58 128.54 32.43 8749.15 7414.63 2653.09 6938.43 7428.38 69.07 2.64 BP MWD+IFR+MS 180 13580.89 87.41 129.05 32.06 8750.55 7432.43 2633.03 6963.40 7444.58 69.29 1.68 BP MWD+IFR+MS [(c)2007 IDEAL ID12_OC_09] SCHLUMBERGER Survey Report 26 -Ju1-2007 18:23:06 Page 8 of 8 Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - (ft) (deg) (deg) (ft) (ft) (ft) (ft) (ft) (ft) (deg) 100f) type (deg) 181 13612.19 87.61 128.67 31.30 8751.91 7449.78 2613.41 6987.75 7460.46 69.49 1.37 BP MWD+IFR+MS 182 13644.19 87.65 128.74 32.00 8753.24 7467.60 2593.41 7012.70 7476.88 69.70 0.25 BP _MWD+IFR+MS 183 13676.11 87.90 129.43 31.92 8754.48 7485.19 2573.30 7037.45 7493.17 69.91 2.30 BP_MWD+IFR+MS 184 13708.49 90.77 128.35 32.38 8754.85 7503.14 2552.98 7062.65 7509.91 70.13 9.47 BP _MWD+IFR+MS 185 13739.67 92.17 127.18 31.18 8754.05 7520.92 2533.89 7087.29 7526.64 70.33 5.85 BP _MWD+IFR+MS 186 13771.60 92.38 127.65 31.93 8752.78 7539.29 2514.51 7112.63 7544.02 70.53 1.61 BP _MWD+IFR+MS 187 13803.29 91.08 127.11 31.69 8751.83 7557.54 2495.28 7137.80 7561.39 70.73 4.44 BP _MWD+IFR+MS 188 13834.71 90.12 127.95 31.42 8751.50 7575.57 2476.14 7162.72 7578.64 70.93 4.06 BP • _MWD+IFR+MS 189 13866.74 90.36 128.28 32.03 8751.36 7593.69 2456.37 7187.92 7596.04 71.13 1.27 BP _MWD+IFR+MS 190 13899.21 89.50 127.94 32.47 8751.40 7612.06 2436.33 7213.46 7613.79 71.34 2.85 BP _MWD+IFR+MS 191 13930.62 88.64 127.62 31.41 8751.91 7629.97 2417.Q9 7238.29 7631.19 71.53 2.92 BP _MWD+IFR+MS 192 13962.88 89.02 127.39 32.26 8752.57 7648.50 2397.45 7263.87 7649.29 71.73 1.38 BP _MWD+IFR+MS 193 13994.72 89.29 127.76 31.84 8753.04 7666.75 2378.04 7289.11 7667.21 71.93 1.44 BP _MWD+IFR+MS 194 14025.49 89.16 128.11 30.77 8753.46 7684.23 2359.12 7313.37 7684.46 72.12 1.21 BP_MWD+IFR+MS 195 14058.56 88.57 129.02 33.07 8754.11 7702.72 2338.51 7339.22 7702.78 72.33 3.28 BP _MWD+IFR+MS 196 14089.85 88.88 129.21 31.29 8754.81 7719.96 2318.78 7363.50 7719.96 72.52 1.16 BP _MWD+IFR+MS 197 14147.00 89.20 129.21 57.15 8755.77 7751.37 2282.65 7407.77 7751.49 72.87 0.56 Projected TD [(c)2007 IDEAL ID12_OC_09] • ~ r SCHLUMBERGER Survey report Client ...................: BP Exploration (Alaska) Inc. Field ....................: Prudhoe Bay Well .....................: 12-05APB1 API number ...............: 50-029-20391-70 Engineer .................: NKim / JWilson / TKallestad RIG :...................... Nabors 7ES STATE :.................... Alaska ----- Survey calculation methods------------- Method for positions.....: Minimum curvature Method for DLS...........: Mason & Taylor ----- Depth reference ----------------------- Permanent datum..........: Mean Sea Lev Depth reference..........: Driller's Pipe Tally GL above permanent.......: 31.06 ft KB above permanent.......: N/A Top Drive DF above permanent.......: 70.46 ft ----- Vertical section origin---------------- Latitude (+N/S-).......... 0.00 ft Departure (+E/W-)........: 0.00 ft ----- Platform reference point--------------- Latitude (+N/S-).........: -999.25 ft Departure (+E/W-)........: -999.25 ft Azimuth from Vsect Origin to target: 72.56 degrees ~ I ~i' '~ 1 6 ~ 4-Ju1-2007 06:53:15 Page 1 of 6 Spud date ................: 20-Jun-07 Last survey date.........: 01-Ju1-07 Total accepted surveys...: 129 I~ID of first survey.......: 0.00 ft NID of last survey........: 12052.00 ft ----- Geomagnetic data ---------------------- Magnetic model...........: BGGM version 2006 Magnetic date ............: 26-Jun-2007 Magnetic field strength..: 57669.35 GAMA Magnetic dec (+E/W-).....: 24.00 degrees Magnetic dip .............: 80.92 degrees ----- MWD survey Reference Criteria --------- Reference G ..............: 1002.67 mGal Reference H ..............: 57669.50 GAMA Reference Dip ............: 80.92 degrees Tolerance of G...........: (+/-) 2.50 mGal Tolerance of H...........: (+/-)300.00 GAMA Tolerance of Dip.........: (+/-) 0.45 degrees ----- Corrections --------------------------- Magnetic dec (+E/W-).....: 24.00 degrees Grid convergence (+E/W-).: 0.00 degrees Total az corr (+E/W-)....: 24.00 degrees (Total az corr = magnetic dec - grid conv) Survey Correction Type .... I=Sag Corrected Inclination M=Schlumberger Magnetic Correction S=Shell Magnetic Correction F=Failed Axis Correction R=Magnetic Resonance Tool Correction D=Dmag Magnetic Correction CJ ~ ~ r [(c)2007 IDEAL ID12_OC_ 09] SCHLU MBERGER Su rvey Report 4- Ju1-2007 07:26:23 Page 2 of 6 Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - (ft) (deg) (deg) (ft) (ft) (ft) (ft) (ft) (ft) (deg) 100f) type (deg) 1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0_00 0.00 BP _CB GYRO MS 2 97.46 0.00 0.00 97.46 97.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 3 197.46 0.00 0.00 100.00 197.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 4 297.46 0.00 0.00 100.00 297.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 5 397.46 0.00 0.00 100.00 397.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 6 497.46 0.00 0.00 100.00 497.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 7 597.46 0.00 0.00 100.00 597.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 8 697.46 0.00 0.00 100.00 697.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 9 797.46 0.00 0.00 100.00 797.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 10 897.46 0.00 0.00 100.00 897.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 11 997.46 0.00 0.00 100.00 997.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 12 1097.46 0.00 0.00 100.00 1097.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 13 1197.46 0.00 0.00 100.00 1197.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 14 1297.46 0.00 0.00 100.00 1297.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 15 1397.46 0.00 0.00 100.00 1397.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 16 1497.46 0.00 0.00 100.00 1497.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 17 1597.46 0.00 0.00 100.00 1597.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 18 1697.46 0.00 0.00 100.00 1697.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 19 1797.46 0.00 0.00 100.00 1797.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 20 1897.46 0.00 0.00 100.00 1897.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 21 1997.46 0.00 0.00 100.00 1997.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 22 2097.46 0.00 0.00 100.00 2097.46 0.00 0.00 0.00 0.00 0.00 0.00 BP _CB GYRO MS 23 2197.46 3.00 114.00 100.00 2197.41 1.96 -1.06 2.39 2.62 114.00 3.00 BP _CB GYRO MS 24 2297.46 4.00 123.00 100.00 2297.23 6.15 -4.03 7.71 8.70 117.60 1.14 BP _CB GYRO MS 25 2397.46 5.00 134.00 100.00 2396.92 10.45 -8.96 13.77 16.42 123.04 1.32 BP _CB GYRO MS 26 2497.46 5.50 133.00 100.00 2496.50 14.90 -15.25 20.41 25.48 126.77 0.51 BP _CB GYRO MS 27 2597.46 5.00 133.00 100.00 2596.08 19.41 -21.49 27.10 34.59 128.42 0.50 BP _CB GYRO MS 28 2697.46 4.00 157.00 100.00 2695.78 21.90 -27.67 31.65 42.04 131.17 2.11 BP _CB GYRO MS 29 2797.46 4.00 147.00 100.00 2795.54 23.17 -33.81 34.91 48.60 134.08 0.70 BP _CB GYRO MS 30 2897.46 4.25 122.00 100.00 2895.29 26.52 -38.70 39.95 55.62 134.09 1.80 BP _CB GYRO MS ~ ~ . SCHLUP~ERGER Survey Report 4-Ju1-2007 07:26:23 Page 3 of 6 Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - (ft) (deg) (deg) (ft) (ft) (ft) (ft) (ft) (ft) (deg) 100f) type (deg) 31 2997.46 4.50 94.00 100.00 2995.01 32.58 -40.94 47.01 62.34 131.05 2.13 BP _CB GYRO MS 32 3097.46 5.00 78.00 100.00 3094.67 40.57 -40.30 55.19 68.34 126.14 1.41 BP _CB GYRO MS 33 3197.46 6.50 74.00 100.00 3194.16 50.57 -37.84 64.89 75.12 120.25 1.55 BP _CB GYRO MS 34 3297.46 9.00 72.00 100.00 3293.24 64.05 -33.86 77.77 84.82 113.53 2.51 BP _CB GYRO MS 35 3397.46 11.00 70.00 100.00 3391.72 81.40 -28.18 94.18 98.30 106.66 2.03 BP _CB GYRO MS 36 3497.46 13.00 70.00 100.00 3489.53 102.17 -21.07 113.71 115.65 100.50 2.00 BP _CB GYRO MS 37 3597.46 16.00 69.00 100.00 3586.33 127.17 -12.28 137.16 137.70 95.12 3.01 BP _CB GYRO MS . 38 3697.46 18.00 68.00 100.00 3681.95 156.33 -1.55 164.35 164.36 90.54 2.02 BP _CB GYRO MS 39 3797.46 20.00 70.00 100.00 3776.50 188.82 10.08 194.75 195.01 87.04 2.10 BP _CB GYRO MS 40 3897.46 24.75 70.00 100.00 3868.95 226.84 23.10 230.51 231.67 84.28 4.75 BP _CB GYRO MS 41 3997.46 28.25 72.00 100.00 3958.43 271.43 37.58 272.70 275.28 82.15 3.61 BP _CB GYRO MS 42 4097.46 30.50 66.00 100.00 4045.59 320.32 55.22 318.41 323.16 80.16 3.70 BP _CB GYRO MS 43 4197.46 34.00 68.00 100.00 4130.15 373.42 76.02 367.53 375.31 78.31 3.66 BP _CB GYRO MS 44 4297.46 38.00 68.00 100.00 4211.03 432.00 98.04 422.02 433.26 76.92 4.00 BP _CB GYRO MS 45 4397.46 42.00 67.00 100.00 4287.62 496.01 122.65 481.38 496.76 75.71 4.05 BP _CB GYRO MS 46 4497.46 40.00 68.00 100.00 4363.09 561.36 147.77 541.99 561.77 74.75 2.10 BP _CB GYRO MS 47 4597.46 42.50 68.00 100.00 4438.27 627.08 172.46 603.11 627.29 74.04 2.50 BP _CB GYRO MS 48 4697.46 42.50 68.00 100.00 4512.00 694.42 197.77 665.75 694.51 73.46 0.00 BP _CB GYRO MS 49 4797.46 42.25 68.00 100.00 4585.87 761.61 223.02 728.24 761.63 72.97 0.25 BP _CB GYRO MS 50 4897.46 43.00 68.00 100.00 4659.45 829.11 248.39 791.03 829.11 72.57 0.75 BP _CB GYRO MS 51 4997.46 43.75 69.00 100.00 4732.14 897.62 273.55 854.93 897.63 72.26 1.02 BP _CB GYRO MS • 52 5097.46 43.50 70.00 100.00 4804.53 966.51 297.72 919.55 966.55 72.06 0.73 BP _CB GYRO MS 53 5197.46 44.00 72.00 100.00 4876.77 1035.63 320.22 984.93 1035.68 71.99 1.47 BP _CB GYRO MS 54 5297.46 45.00 72.00 100.00 4948.09 1105.71 341.88 1051.59 1105.77 71.99 1.00 BP _CB GYRO MS 55 5397.46 44.50 72.00 100.00 5019.11 1176.11 363.64 1118.55 1176.17 71.99 0.50 BP _CB GYRO MS 56 5497.46 44.25 73.00 100.00 5090.59 1246.05 384.67 1185.24 1246.10 72.02 0.74 BP _CB GYRO MS 57 5597.46 44.00 73.00 100.00 5162.37 1315.67 405.02 1251.82 1315.71 72.07 0.25 BP _CB GYRO MS 58 5697.46 43.25 73.00 100.00 5234.76 1384.66 425.19 1317.80 1384.70 72.12 0.75 BP _CB GYRO MS 59 5797.46 44.25 74.00 100.00 5306.99 1453.80 444.83 1384.10 1453.83 72.18 1.22 BP _CB GYRO MS 60 5897.46 43.75 75.00 100.00 5378.93 1523.22 463.39 1451.04 1523.24 72.29 0.86 BP _CB GYRO MS . SCHLUMBERGER Survey Report 4-Ju1-2007 07:26:23 Page 4 of 6 Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - (ft) (deg) (deg) (ft) (ft) (ft) (ft) (ft) (ft) (deg) 100f) type (deg) 61 5997.46 44.75 72.00 100.00 5450.56 1592.97 483.22 1517.93 1592.98 72.34 2.32 BP _CB GYRO MS 62 6074.00 44.56 70.52 76.54 5505.01 1646.75 500.50 1568.87 1646.77 72.31 1.38 BP _CB GYRO MS 63 6091.00 46.48 69.55 17.00 5516.92 1658.87 504.65 1580.27 1658.89 72.29 12.01 BP _BLIND 64 6117.96 44.63 69.50 26.96 5535.80 1678.09 511.38 1598.30 1678.11 72.26 6.86 BP _INC+TREND 65 6154.60 43.26 69.00 36.64 5562.18 1703.47 520.39 1622.07 1703.50 72.21 3.86 BP _INC+TREND 66 6249.71 43.47 65.00 95.11 5631.34 1768.44 545.90 1682.16 1768.52 72.02 2.90 BP _INC+TREND 67 6344.86 42.29 62.00 95.15 5701.07 1832.37 574.76 1740.10 1832.56 71.72 2.48 BP _INC+TREND • 68 6439.42 42.11 58.50 94.56 5771.13 1894.41 606.27 1795.23 1894.84 71.34 2.49 BP _INC+TREND 69 6533.97 42.28 55.38 94.55 5841.19 1955.55 640.90 1848.44 1956.39 70.88 2.22 BP _M[n7D+IFR+MS 70 6629.58 44.76 47.04 95.61 5910.57 2016.71 682.16 1899.59 2018.36 70.25 6.54 BP _MWD+IFR+MS 71 6724.86 46.32 39.05 95.28 5977.36 2075.77 731.82 1945.88 2078.95 69.39 6.20 BP _N1WD+IFR+MS 72 6820.25 50.78 32.00 95.39 6040.53 2132.67 790.01 1987.25 2138.52 68.32 7.24 BP _MWD+IFR+MS 73 6914.83 56.68 24.10 94.58 6096.52 2186.81 857.28 2022.86 2197.02 67.03 9.17 BP _MWD+IFR+MS 74 7007.90 61.62 20.17 93.07 6144.24 2237.63 931.28 2052.89 2254.24 65.60 6.43 BP _MWD+IFR+MS 75 7100.67 66.30 22.56 92.77 6184.96 2289.87 1008.86 2083.27 2314.70 64.16 5.55 BP _M[nID+IFR+MS 76 7164.60 67.54 24.96 63.93 6210.02 2328.61 1062.68 2106.97 2359.79 63.24 3.96 BP_MWD+IFR+MS 77 7203.56 68.25 27.00 38.96 6224.69 2353.42 1095.12 2122.79 2388.62 62.71 5.18 BP _MinID+IFR+MS 78 7297.36 68.34 30.75 93.80 6259.39 2416.43 1171.42 2164.86 2461.47 61.58 3.72 BP _MWD+IFR+MS 79 7389.58 67.10 35.43 92.22 6294.37 2482.27 1242.90 2211.42 2536.76 60.66 4.88 BP _MWD+IFR+MS 80 7484.99 65.41 41.24 95.41 6332.81 2554.42 1311.38 2265.53 2617.70 59.94 5.85 BP _MWD+IFR+MS 81 7579.57 63.27 47.19 94.58 6373.79 2629.38 1372.47 2324.92 2699.80 59.45 6.10 BP _MWD+IFR+MS • 82 7673.85 61.88 53.38 94.28 6417.25 2706.75 1425.92 2389.22 2782.38 59.17 6.01 BP _MWD+IFR+MS 83 7767.69 61.44 59.31 93.84 6461.83 2786.01 1471.67 2457.92 2864.82 59.09 5.58 BP _MWD+IFR+MS 84 7861.39 61.31 61.03 93.70 6506.72 2866.33 1512.58 2529.27 2947.05 59.12 1.62 BP _MWD+IFR+MS 85 7954.15 60.84 60.16 92.76 6551.59 2945.76 1552.44 2600.00 3028.21 59.16 0.96 BP _MWD+IFR+MS 86 8048.76 60.45 60.17 94.61 6597.96 3026.30 1593.47 2671.53 3110.66 59.19 0.41 BP _MWD+IFR+MS 87 8144.16 60.02 60.65 95.40 6645.33 3107.26 1634.36 2743.54 3193.46 59.22 0.63 BP _MWD+IFR+MS 88 8238.67 59.64 61.51 94.51 6692.82 3187.33 1673.87 2815.06 3275.12 59.26 0.88 BP _MWD+IFR+MS 89 8334.06 59.36 62.30 95.39 6741.24 3268.10 1712.58 2887.56 3357.22 59.33 0.77 BP _MWD+IFR+MS 90 8426.67 59.12 62.23 92.61 6788.60 3346.40 1749.62 2958.00 3436.70 59.40 0.27 BP _MWD+IFR+MS a SCHLUI~ERGER Survey Report 4 -Ju1-2007 07:26:23 Page 5 of 6 Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - (ft) (deg) (deg) (ft) (ft) (ft) (ft) (ft) (ft) (deg) 100f) type (deg) 91 8522.15 59.07 62.79 95.48 6837.64 3427.07 1787.43 3030.68 3518.51 59.47 0.51 BP _MWD+IFR+MS 92 8615.21 59.76 62.23 93.06 6884.99 3505.95 1824.41 3101.74 3598.51 59.54 0.90 BP MWD+IFR+MS 93 8708.44 60.20 61.99 93.23 6931.64 3585.33 1862.17 3173.09 3679.15 59.59 0.52 BP _MWD+IFR+MS 94 8804.59 60.21 61.61 96.15 6979.41 3667.30 1901.60 3246.62 3762.53 59.64 0.34 BP _MWD+IFR+MS 95 8898.94 60.13 61.47 94.35 7026.35 3747.64 1940.61 3318.58 3844.34 59.68 0.15 BP _MWD+IFR+MS 96 8994.65 59.95 61.67 95.71 7074.14 3829.04 1980.08 3391.50 3927.22 59.72 0.26 BP _MWD+IFR+MS • 97 9086.85 59.90 61.32 92.20 7120.35 3907.35 2018.16 3461.62 4006.96 59.76 0.33 BP _MWD+IFR+MS 98 9180.48 59.66 61.13 93.63 7167.47 3986.68 2057.11 3532.53 4087.84 59.79 0.31 BP _MWD+IFR+MS 99 9274.91 59.52 60.97 94.43 7215.27 4066.48 2096.53 3603.79 4169.26 59.81 0.21 BP _MWD+IFR+MS 100 9369.00 59.72 60.40 94.09 7262.86 4145.91 2136.27 3674.57 4250.42 59.83 0.56 BP _MWD+IFR+MS 101 9464.20 59.92 60.22 95.20 7310.72 4226.33 2177.03 3746.06 4332.72 59.84 0.27 BP _MWD+IFR+MS 102 9560.81 60.43 60.12 96.61 7358.76 4308.19 2218.72 3818.77 4416.53 59.84 0.54 BP _MWD+IFR+MS 103 9656.22 60.24 59.23 95.41 7405.99 4389.01 2260.58 3890.33 4499.43 59.84 0.83 BP _MWD+IFR+MS 104 9749.85 59.92 58.05 93.63 7452.69 4467.77 2302.81 3959.63 4580.56 59.82 1.14 BP _MWD+IFR+MS 105 9846.16 59.97 57.83 96.31 7500.92 4548.44 2347.06 4030.27 4663.88 59.79 0.20 BP _MWD+IFR+MS 106 9941.45 60.52 56.39 95.29 7548.22 4628.17 2391.98 4099.74 4746.51 59.74 1.43 BP _M[n7D+IFR+M5 107 10036.28 61.12 55.94 94.83 7594.45 4707.60 2438.08 4168.51 4829.15 59.68 0.76 BP _MWD+IFR+MS 108 10129.39 62.48 54.48 93.11 7638.45 4785.91 2484.90 4235.89 4910.96 59.60 2.01 BP _MWD+IFR+MS 109 10224.12 62.76 53.66 94.73 7682.02 4865.69 2534.26 4304.00 4994.69 59.51 0.82 BP _MWD+IFR+MS 110 10318.06 62.40 54.53 93.94 7725.28 4944.78 2583.16 4371.54 5077.71 59.42 0.91 BP _MWD+IFR+MS , 111 10413.54 62.23 54.50 95.48 7769.64 5025.17 2632.24 4440.39 5161.95 59.34 0.18 BP _MWD+IFR+MS 112 10506.39 61.79 54.45 92.85 7813.22 5103.11 2679.89 4507.12 5243.65 59.26 0.48 BP _MWD+IFR+MS 113 10600.33 61.36 54.95 93.94 7857.93 5181.74 2727.63 4574.54 5326.01 59.19 0.65 BP _MWD+IFR+MS 114 10694.97 58.28 59.27 94.64 7905.52 5260.55 2772.07 4643.18 5407.72 59.16 5.11 BP MWD+IFR+MS 115 10789.89 55.03 63.84 94.92 7957.71 5338.33 2809.87 4712.83 5486.91 59.20 5.28 BP _MWD+IFR+MS 116 10884.53 52.51 67.03 94.64 8013.65 5414.05 2841.63 4782.23 5562.78 59.28 3.81 BP _MWD+IFR+MS 117 10979.48 49.54 70.04 94.95 8073.37 5487.66 2868.67 4850.89 5635.64 59.40 3.98 BP _MWD+IFR+MS 118 11072.89 49.14 74.67 93.41 8134.25 5558.48 2890.15 4918.38 5704.68 59.56 3.78 BP _MWD+IFR+MS 119 11166.96 49.39 79.13 94.07 8195.66 5629.53 2906.29 4987.77 5772.73 59.77 3.60 BP _MWD+IFR+MS 120 11262.08 48.95 83.15 95.12 8257.86 5700.67 2917.38 5058.86 5839.79 60.03 3.23 BP _MWD+IFR+MS ~ SCHLUMBERGER Survey Report 4-Ju1-2007 07:26:23 Page 6 of 6 Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - (ft) (deg) (deg) (ft) (ft) (ft) (ft) (ft) (ft) (deg) 100f) type (deg) 121 11355.88 48.96 87.85 93.80 8319.48 5769.58 2922.93 5129.35 5903.70 60.32 3.78 BP _MWD+IFR+MS 122 11451.17 49.69 93.76 95.29 8381.62 5838.15 2921.89 5201.55 5966.03 60.68 4.76 BP _MWD+IFR+MS 123 11546.33 49.53 92.70 95.16 8443.28 5905.96 2917.81 5273.91 6027.25 61.05 0.86 BP _MWD+IFR+MS 124 11638.92 50.57 91.44 92.59 8502.73 5972.87 2915.25 5344.84 6088.18 61.39 1.53 BP _MWD+IFR+MS 125 11732.65 54.06 90.69 93.73 8560.02 6043.20 2913.88 5418.99 6152.74 61.73 3.78 BP _M[n7D+IFR+MS 126 11827.35 57.03 91.08 94.70 8613.60 6117.31 2912.67 5497.06 6221.04 62.08 3.15 BP _MVJD+IFR+MS ~ 127 11920.19 59.70 91.74 92.84 8662.29 6192.11 2910.72 5576.07 6290.06 62.44 2.94 BP _MWD+IFR+MS 128 11988.96 61.93 91.81 68.77 8695.82 6248.80 2908.86 5636.08 6342.46 62.70 3.24 BP _MWD+IFR+MS 129 12052.00 63.25 91.81 63.04 8724.84 6301.63 2907.09 5692.01 6391.42 62.95 2.09 BP _INC+TREND [(c)2007 IDEAL ID12_OC_09] ~ ~ ~ S lu e en ~ Drilling & Measurements MWD/LWD Log Product Delivery Customer BP Exploration (Alaska) Inc. Dispatchetl To: Christine Mahnken (AOGCC) Well No 12-05A~ Date Dispatched: 0-Jan-00 Installation/Rig Nabors 7ES Dispatched By: Franklin Medina LWD Log Delivery V2.1, 03-06-06 Data No Of Prints No of Floppies S u rveys 2 1 Please sign and return to: James H. Johnson ReCelved By: BP Exploration (Alaska) Inc. Petrotechnical Data Center (LR2-1) ~ `~1 ,, - ^ 900 E. Benson Blvd. ~/V ~V\~ Anchorage, Alaska 99508 Fax:907-564-4005 e-mail address: johnsojh~bp.com ~1L~~-CS) ~ ~ ~ Schluma~r Drilling & Measurements MWD/LWD Log Product Delivery Customer BP Exploration (Alaska) Inc. Dispatchetl To: Christine Mahnken ~AOGCC) Well No 12-05APB1 Date Dispatched: 0-Jan-00 Installation/Rig Nabors 7ES Dispatchetl By: Franklin Metlina LWD Log DeliveryV2.1, 03-06-06 Data No Of Prints No of Floppies S u rveys 2 1 Please sign and return to: ~ames H. ~onnson ReCeiVed By: BP Exploration (Alaska) Inc. Petrotechnical Data Center (LR2-1) ~ ) ~, `~ 9DD E. Benson Blvd. f~'~ ~ Anchorage, Alaska 99508 Fax:907-564-4005 e-mail address: johnsojhC~bp.com ~~7-p S ~ ~ Page 1 of 2 ~ Maunder, Thomas E (DOA) From: Jackson, William C (Landmark) [Witliam.Jackson@bp.comj Sent: Friday, July 06, 2007 12:10 PM To: Nigh, Jim; Hubble, Terrie L; Douglas, David W(Landmark); Maunder, Thomas E(DOA) Cc: Gerik, Bob G; Simons, Thomas R(PRA) Subject: RE: 12-05A Wetlbore Nomenclature ~-~~~~~ ~ Jim, i have changed the names of the wellbore in DIMS for you, Wellbore #01 is now 12-05APB1, Wellbore #02 is now 12-05A kicking off from OH. From: Nigh, Jim Sent: Friday, )uly 06, 2007 11:36 AM To: Hubble, Terrie L; Douglas, David W(Landmark); Maunder, Thomas E(DOA) Cc: Gerik, Bob G; Simons, Thomas R(PRA); )ackson, William C(Landmark) Subject: 12-05A Wetlbore Nomenclature AIl, It has been brought to my attention that the intermediate hole section that we just cased, cemented (both the shoe and at the top of the liner at the 9-5/8" window), and abandoned should be designated PB1, and the new well bore that we are getting ready to kickoff and drill from higher up the 12-05 mother bore will be named the original 12-05A. Please let me know if this is co~rect and what, if any, actions need to be completed. Thank you, -Jim From: Nigh, Jim Sent: Thursday, July 05, 2007 3:23 PM To: 'C. Scott DeLapp'; 'Ron Gehres'; SMeaffer, Aaron M; Copen, James D; Madsen, Alan ~(Fairweather); NSU, ADW Drlg Rig 7 ES, LeBlanc, Jcey (Anadrill); Hobbs, Greg S(ANC); 'Luckey, Ken J.'; Meyer, Cheve (Schlumberger); 'Sauvageau, Pat L.'; 'John Burton ;'Wallace, Christopher'; Schultz, Mikel; Gerik, Bob G; Simons, Thomas R(PRA), 'Natftan HiNeary; Watrcins, R+chard L; Robbins, Brian W. (BAKER QIL TOOLS); 'F-nch, Harvey L.' Cc: Peltier, Travis M; Perdomo, Mauricio (Schlumberger); Bames, Brandon A(SCHLUMBERGER) Su6ject: 12-OSA Update Alt, The latest plan fwd overview: 1) RIN with an E~SV retainer and set just above (@ ~5724') the top of the previous 7" drilling liner (which we are 8bandoning). 2) Bullhead ~15 bbls of cement down thrQUgh retainer for ~>100' of cement plug outside the old window. (We have established injectivity}. 7/6/2007 • • Page 2 of 2 3) Set whipstock (5703' top} c~ mit! r~ew window 4) RIH with RSS dri[fing BHA. Kick off of whipstock and dri(t new 8-1l2° {ntermecEiate section aecard"rng ta updated directionat plan (P10) and with 11.6ppg mud. 5) Refer to origina! well plan upon reaching TD of intermediate hole section. Thank you, -Jim Jim Nigh Alaska Drilling 8~ Wells BP Exploration, Inc. 907-564-5220 Office 9Q7-441-2591 Mobile 7/6/2007 RE: 12-OSA Plan FWD • ~ Page 1 af 3 Maunder, Thomas E (DOA) From: Maunder, 7homas E (DOA) Sent: Thursday, July 05, 2007 11:99 AM To: 'Nigh, Jim' Cc: Hobbs, Greg S (ANC) Subject: RE: 12-05A Plan FWD a~~ -~~ ~ In the cut shallower (above the window) case, treat the window depth as if it is a casing shoe. I think a minimum of 100' outside is what is in the regulations (you should check). If 100' is the mimimum, then 200' as you propose should do it. Just need to be sure you pump enough to have good cement. It might be that the amount you pump is dictated by what you need to mix. Tom From: Nigh, Jim [mailto:Jim.Nigh@bp.com] Sent: Thursday, ]u1y O5, 2007 11:12 AM To: Maunder, Thomas E (DOA) Cc: Hobbs, Greg S (ANC) Subject: RE: 12-05A Plan FWD FYI Update: It appears as though we are also hanging up at the 9-5/8" window (most likely due to working the pipe over that window for hours). We have decided that the best plan forward will be to cut the casing about about 5-600' outside the window in order to maximize our chances of being able to pull the 7" liner free. We are currently POOH with the mechanical cutter post cut at ~6,600' MD. /f we can't jar the 7" liner free, our proposed, simplified plan forward is to: -RIH and cut the 7" liner just above the window -Spear and puil the 7" -RIH with an EZSV retainer and set just above the 7" stub -Bullhead cement (amount of footage/bbis required TBD*) through retainer -Set whipstock, mill new window, and kickoff just a little higher that the original window in order to redrill our intermediate section *How much cement would the State require in this scenario? Z00'? Thoughts? Thanks, -Jim From: Nigh, 7im Sent: Wednesday, ]uly 04, 2007 7:57 AM To: Maunder, Thomas E (DOA) Cc: Hobbs, Greg S (ANC) Subject: RE: 12-05A Plan FWD 7/10/2007 RE: 12-OSA Plan FWD • • Page 2 of 3 Thanks a ton, Tom. ! reaily appreciate you understanding our situation and the need for timely decision making. After more discussion on the topic, I attered the plan forward slightly; to lay in 500' of cement on top of a weighted, hi-viz pill in order to give us more to work with when kicking off due to using RSS vice bent motor. -Jim From: Maunder, Thomas E (DOA) [mailto:tom.maunder@alaska.gov] Sent: Tue 7/3/2007 8:35 PM To: Nigh, Jim Cc: Hobbs, Greg S (ANC) Subject: RE: 12-05A Plan FVVD Jim and Greg, Thanks for the updates. I have spoken with Commissioner Fcerster and she is in agreement with the plan forward. By copy of this message you have oral approval to proceed. Call ar message with any questions. Tom Maunder, PE AOGCC -----Original Message----- From: Nigh, Jim [mailto;Jim:Nigh cr b~.com] Sent: Tue 713/2007 4:59 PM To: Maunder, 'Thomas E (DOA) Cc: Hobbs, Greg 3 (ANC) Subjeet: RE: 12-OSA Plan FWD Correction ~14 bbis / 200' above top of stub. That should give us 100' to dritl up while kicking off. Thanks, -Jim From: Nigh, Jnn Sent: Tuesday, July 03, 2007 4:52 PM To: 'Thomas Maunder' Cc: Hobbs, Greg S (ANC) Subject: 12-OSA Plan FWD Tom, FYI Plan forward: 1) Pump ~25bbls oftait cement in order to P&A the well bore, essentially isolating the Sag from the West Sak (next permeabie zone at 8260'). Ensure to not exceed 2900psi differential pressure which will set the hanger. - DONE 7/10/200? RE: 12-OSA Plan FWD • ~ Page 3 of 3 2) Mechanicatly retease liner (via C2 mm~ing tool). To assure that we do not set the packer, da not run back into tt~e hole after coming off of ('unstinging'} release assembly. Pump as hard and Iong as possible while slowly POOH. LD liner running tools. 3) RU Eline and RIH with FreePoint tool in order to determine 7° cut depth 4) PU 4" DP for mechanical cutter and mechanically cut 7" at TBD depth from FreePoint determination and new directional plan (currently being worked on). 5) Speaz and recover/pull the remaining 7" liner from tt~e cut point 6) RU for cementing operations. RIH with Baker Inflatable Open Hole packer on DP. Set above 7" stub. Lay ~14bbls (for ~20d' on top of stub) of class G cement on top of packer. POOH. 7) MU/RU and RIH with bent motor Drilling BHA. Sideirack/Kick off of cement plug and drill new 8-1/2" Intermediate section according to updated directional plan and 11.6ppg mud. Have a wonderfiil 4th of July, -Jim Jim Nigh Alaska Drilting & Wells BP Exploration, Inc. 907-564-5220 Office 907-441-2591 Mobile 7/10/2007 FW: 12-OSA Anti-collision update ~ • Subject: FW: 12-OSA Anti-collision update From: "Nigh, Jim" <Tim.Nigh@bp.com> Date: Sun, 17 Jun 2007 14:58:45 -0800 ~~,-~ ~~ To: Thornas Maunder <tom maunder~~admin.state.ak.us> CC: "Sudderth, Josh" <Josh.Sudderth@BP.com>, "Hubble, Terrie L" <`Terrie.Hubble@BP.cam>, "Hobbs, Greg S (ANC)" <Greg.Hobbs@BP.com> Hi Tom, I acquired this well from Josh and received the gyro data from 12-26 last week. The new directional plan with updated anti-collision scan is attached (short story is that 12-26 now also passes major risk criteria). Thanks, -Jim From: Thomas Maunder [mailto:tom_maunder@admin.state.ak.us] Sent: Thursday, May 03, 2007 12:37 PM To: Sudderth, Josh Cc: Hubble, Terrie L; Hobbs, Greg S(ANC) Subject: Re: 12-OSA Anti-collision update Thanks Josh. Just append it to this reply. Tom Maunder, PE AOGCC Sudderth, Josh wrote, On SJ3/2007 12:24 PM: Tom, As per the pre-rig plan in the permit application: ' We have completed the gyro run for the 12-02 well bore. The 12-05A well plan now passes major risk ' criteria with the 12-02. The gyro for the 12-26 is pending. I will update you again once we have the gyro ', and perform the anti-collision scan. Josh Sudderth Operations Drilling Engineer BP Exploration Alaska Office: 907-564-4342 Cell: 907-632-3807 Content-Description: 12-OSA (P7) report.pdf 12-OSA (P7) report.pdf Content-Type: application/octet-stream Content-Encoding: base64 _ _ 12-OSA (P7) with 12-26 gyro AC Scan.pdf Content-Description: 12-OSA (P7) with 12-26 gyro AC 1 of 2 6/20/2007 8:08 AM DS12-05A (P7) Proposal Client: BP Exploration Alaska Field: Prudhoe Bay Unit- EOA Structure 1 Slot: DS-12 / 12-05 ' Wefl: 12-05 Borehole: Plan 12-05A UWIIAPI#: 500292039101 Survey Name 1 Date: 12-05A (P7) / May 31, 2007 Tart I AHD I DDf 1 ERD ratio: 243.046° / 8462.62 ft/ 6.513 / 0.969 Grid Coordinate System: NAD27 Alaska State Planes, Zone 04, US Feet ~ Location latllong: N 70.21572710, W 148.40624210 Location Grid NIE YIX: N 5931029.180 ftUS, E 697575.790 ftUS GridConvergenceAngle: +1.49972870° Vertical Section Azimuth: 72.560° Vertical Section Origin: N 0.000 ft, E 0.000 ft ~ TVD Reference Datum: Rotary Table TVD Reference Elevation: 69.50 ft relative to MSL Sea Bed I Ground Level Elevation: 41.00 ft relative to MSL Magnetic Declination: 23.825° Total field Strength: 57658.105 nT Magnetic Dip: 80.888° Declination Date: July 01, 2007 Magnetic Declination Model: BGGM 2007 North Reterence: True North Total Corr Mag North •> True North: +23.825° Local Coordinates Referenced To: Well Head Comments Measured Inclination Azimuth Sub•SeaND T~ Vertical NS EW Gravity DLS Directional Northing Easting Latitude Longitude Depth Section 7oolFace Difficulty ft de de R ft ft k ft d de 1100 ft Index (tUS ftUS iiC-uiouivey ovyo.ou 44.OU /U.UU ~9O-LGO ~7GU./8 ~ro03.1Y ~vo.ua -ioaw.a4 253.J`JK 1.43 D:13 byJlS/U.53 naa~i4n. zo N/U .Z"I/"IU`JZb VVl4i5.3y34b3bb Top Whipstock 6100.00 44.51 70.18 5453.78 5523.28 1665.64 506.92 1586.65 49.OOL 3.55 5.13 5931577.42 699148. 53 N 70 .21711153 W 148.39344505 Base Whipstock 6116.00 45.90 67.99 5465.05 5534.55 1676.97 510.98 1597.25 -- 13.00 5.14 5931581.76 699159 .03 N 70 .21712261 W 148.39335952 KOP Crv 4/100 6128.00 45.90 67.99 5473.40 5542.90 1685.56 514.21 1605.24 49.07L 0.00 5.15 5931585.19 699166 .93 N 70 .21713142 W 148.39329507 UG1 6166.58 46.92 66.39 5500.00 5569.50 1713.38 525.04 1630.99 47.97L 4.00 5.16 5931596.70 699192. 39 N 70. 21716101 W 148.39308733 6200.00 47.82 65.05 5522.63 5592.13 1737.79 535.15 1653.41 47.07L 4.00 5.18 5931607.39 699214 .53 N 70 .21718862 W 148.39290653 6300.00 50.61 61.26 5587.96 5657.46 1812.46 569.37 1720.92 44.59L 4.00 5.22 5931643.36 699281. 12 N 70 .21728207 W 148.39236196 6400.00 53.52 57.77 5649.44 5718.94 1889.25 609.41 1788.84 42.44L 4.00 5.26 5931685.16 699347. 96 N 70 .21739139 W 148.39181407 6500.00 56.51 54.54 5706.78 5776.28 1967.81 655.06 1856.84 40.59L 4.00 5.30 5931732.57 699414. 74 N 70 .21751606 W 148.39126553 End Crv 6575.65 58.83 52.24 5747.24 5816.74 2028.17 693.19 1908.13 --- 4.00 5.33 5931772.03 699465. 02 N 70 .21762020 W 148.39085174 WS2 7208.92 58.83 52.24 6075.00 6144.50 2536.29 1025.02 2336.49 --- 0.00 5.45 5932114.93 699884. 52 N 70. 21852641 W 148.38739589 WS1 7749.91 58.83 52.24 6355.00 6424.50 2970.37 1308.49 2702.43 --- 0.00 5.53 5932407.87 700242. 90 N70. 21930051 W148.38444336 ~ CM3 8232.94 58.83 52.24 6605.00 6674.50 3357.94 1561.60 3029.17 -- 0.00 5.60 5932669.43 700562. 88 N 70. 21999164 W 148.38180699 CM2 9256.97 58.83 52.24 7135.00 7204.50 4179.60 2098.18 3721.85 --- 0.00 5.71 5933223.92 701241. 24 N 70. 22145670 W 148.37621730 Crv 4/100 10413.49 58.83 52.24 7733.58 7803.08 5107.57 2704.19 4504.16 116.64R 0.00 5.82 5933850.17 702007. 37 N 70 .22311112 W 148.36990337 10500.00 57.33 55.91 7779.33 7848.83 5177.18 2747.28 4563.59 114.70R 4.00 5.84 5933894.79 702065. 65 N 70 .22322873 W 148.36942368 10600.00 55.74 60.31 7834.49 7903.99 5257.92 2791.35 4634.37 112.27R 4.00 5.86 5933940.70 702135. 26 N 70 .22334903 W 148.36885238 10700.00 54.30 64.87 7891.84 7961.34 5338.58 2829.08 4707.06 109.65R 4.00 5.89 5933980.32 702206. 93 N 70 .22345198 W 148.36826573 10800.00 53.05 69.58 7951.09 8020.59 5418.76 2860.28 4781.30 106.86R 4.00 5,91 5934013.44 702280. 32 N 70 .22353708 W 148.36766660 10900.00 51.99 74.44 8011.96 8081.46 5498.07 2884.79 4856.73 103.90R 4.00 5.94 5934039.92 702355. 08 N 70 .22360392 W 148.36705790 CM1 10913.04 51.87 75.09 8020.00 8089.50 5508.32 2887.49 4866.64 103.50R 4.00 5.94 5934042.88 702364. 91 N 70. 22361127 W 148.36697799 11000.00 51.13 79.43 8074.15 8143.65 5576.12 2902.50 4932.99 100.80R 4.00 5.96 5934059.62 702430. 84 N 70 .22365217 W 148.36644260 11100.00 50.49 84.53 8137.36 8206.86 5652.54 2913.33 5009.69 97.58R 4.00 5.98 5934072.45 702507. 23 N 70 .22368159 W 148.36582370 11200.00 50.08 89.70 8201.28 8270.78 5726.96 2917.21 5086.47 94.27R 4.00 6.00 5934078.33 702583. 88 N 70. 22369205 W 148.36520422 End Crv / Tgt 1 11230.70 50.00 91.30 8221.00 8290.50 5749.35 2917.00 5110.00 --- 4.00 6.01 5934078.74 7026Q7. 41 N 70. 22369145 W 148.36501437 WeIlDesign Ver SP 2.1 Bld( doc40x_100 ) 12-05\12-05\Plan 12-05A\12-05A (P7) Generated 6/11/2007 8:37 AM Page 1 of 2 Comments Measured Indination Azimuth Sub•SeaND T~ Vertical NS EW Gravily DLS Directional Northing Easting Latitude Longitude Depth Section ToolFace Difficuhy ft de de k k ft tt ft de de 1100 k Index ftUS ftUS THRZ BHRZ LCU/TKNG Crv 4/100 TJA End Crv 7" Csg Pt TSAG ~ Crv 25/100 TSHU 90° Pt Crv 8/100 12-05A Tgt 2 End Crv 12-05A Tgt3 Crv 8/100 12-05A Tgt 4 End Crv Crv 8/100 12-OSA Tgt 5 ~ End Crv Crv 8/100 12-OSA Tgt 6 End Crv TD / 4-1l2" Lnr 11324.05 11588.52 19632.08 11633.01 11700.00 11715.88 11800.00 11883.01 11883.39 11883.91 11893.01 11900.00 11950.34 12000.00 12013.00 12073.11 12073.32 12100.00 12200.00 12269.80 12277.08 12586.00 12901.07 12922.16 12956.98 12980.54 13000.00 13100.00 13107.66 13200.00 13300.00 13393.04 13582.80 13600.00 13665.81 13700.00 13707.15 13831.94 50.00 50.00 50.00 50.00 52.68 53.31 56.68 60.00 60.00 60.00 60.00 61.75 74.33 86.75 90.00 105.02 105.02 102.99 95.34 90.00 90.00 90. 00 90.00 90.00 87.23 87.23 87.25 87.34 87.35 87.34 87.39 87.48 87.48 87.49 87.58 87.58 87.59 87.59 91.30 91.30 91.30 91.30 91.30 91.30 91.30 91.30 91.30 91.30 91.30 91.29 91.22 91.15 91.14 91.06 91.06 91.72 94.10 95.73 96.31 96.31 96.31 98.00 98.32 98.32 99, 88 107.89 108.50 115.90 123.90 131.35 131.35 132.73 138, 00 140.74 141.31 141.31 8281.00 8451.00 8479. 00 8479.60 8521.44 8531.00 8579.25 8622.81 8623.00 8623.01 8627.81 8631.21 8650.00 8658.15 8658.52 8650.68 8650.63 8644.17 8628.25 8625.00 8625.00 8625.00 8625.00 8625.00 8625.84 8626.98 8627.91 8632.65 8633.00 8637.28 8641.88 8646.06 8654.42 8655.17 8658.00 8659.44 8659.74 8665.00 8350.50 8520.50 8548.50 8549.10 8590.94 8600.50 8648.75 8692.31 8692.50 8692.51 8697.31 8700.71 8719.50 8727.65 8728.02 8720.18 8720.13 8713.67 8697.75 8694.50 8694.50 8694.50 8694.50 8694.50 8695.34 8696.48 8697.41 8702.15 8702.50 8706.78 8711.38 8715.56 8723.92 8724.67 8727.50 8728.94 8729.24 8734.50 Legal Description: Surface : 698 FSL 27 FEL S18 T10N R15E UM Tgt 1: 3614 FSL 187 FEL S17 T10N R15E UM TD / BHL : 3021 FSL 3199 FE~ S16 T10N R15E UM WeIlDesign Ver SP 2.1 Bld( doc40x_100 ) 5817.06 2915.38 5181.49 --- 0.00 6.01 5934078.99 702678.91 N 70.22368688 W 148.36443762 6008.92 2910.78 5384.03 --- 0.00 fi.03 5934079. 70 702881. 49 N 70.22367394 W 148.36280350 6040.52 2910.02 5417.39 --- 0.00 6.03 5934079. 82 702914. 86 N 70.22367181 W 148.36253435 6041.19 2910.01 5418.11 HS 0.00 6.03 5934079. 82 702915 .57 N 70.22367176 W 148.36252858 6090.72 2908.82 5470.40 HS 4.00 6.04 5934080. 00 702967 .87 N 70.22366841 W 148.36210671 6102.73 2908.53 5483.08 HS 4.00 6.05 5934080. 05 702980. 55 N 70.22366760 W 148.36200443 6167.98 2906.97 5551.95 HS 4.00 6.06 5934080. 29 703049 .44 N 70.22366320 W 148.36144873 6234.88 2905.37 5622.58 --- 4.00 6.08 5934080. 53 703120 .09 N 70.22365867 W 148.36087889 6235.19 2905.36 5622.91 - 0.00 6.08 5934080. 53 703120. 41 N 70.22365865 W 148.36087627 6235.20 2905.36 5622.93 - 0.00 6.08 5934080. 53 703120. 43 N 70.22365865 W 148.36087613 6243.08 2905.17 5631.24 HS 0.00 6.08 5934080. 56 703128 .75 N 70.22365812 W 148.36080904 6248.86 2905.03 5637.34 HS 25.00 6.09 5934080. 58 703134 .85 N 70.22365773 W 148.36075981 6292.99 2904.02 5683.92 HS 25.00 6.13 5934080. 79 703181. 44 N 70.22365486 W 148.36038402 6339.33 2903.01 5732.80 HS 25.00 6.17 5934081. 06 703230 .33 N 70.22365200 W 148.35998965 6351.64 2902.75 5745.79 HS 25.00 6.18 5934081. 19 703243. 32 N 70.22365126 W 148.35988484 6407.99 2901.61 5805.21 --- 25.00 6.22 5934081. 56 703302 .74 N 70.22364803 W 148.35940547 6408.18 2901.61 5805.41 162.51 R 0.00 6.22 5934081 .56 703302 .94 N 70.22364802 W 148.35940386 6432.67 2900.98 5831.29 162.66R 8.00 6.23 5934081. 61 703328 .82 N 70.22364625 W 148.35919509 6525.15 2895.95 5929.80 163.05R 8.00 6.26 5934079. 16 703427 .43 N 70.22363230 W 148.35840031 6589.61 2889.97 5999.24 90.OOR 8.00 6.28 5934075. 00 703497 .00 N 70.22361582 W 148.35784010 6596.29 2889.21 6006.48 --- 8.00 6.28 5934074. 43 703504 .26 N 70.22361372 W 148.35778170 6879.04 2855.24 6313.53 --- 0.00 6.31 5934048. 51 703812. 07 N 70.22352024 W 148.35530467 7167.42 2820.60 6626.69 90.OOR 0.00 6.34 5934022. 08 704126 .01 N 70.22342487 W 148.35277837 7186.60 2817.97 6647.62 173.41 R 8.00 6.35 5934020 .00 704147 .00 N 70.22341764 W 148.35260952 7217.99 2813.04 6682.07 --- 8.00 6.35 5934015. 96 704181 .56 N 70.22340406 W 148.35233163 7239.18 2809.63 6705.36 89.59R 0.00 6.36 5934013 .17 704204 .93 N 70.22339470 W 148.35214376 7256.57 2806.56 6724.54 89.51 R 8.00 6.36 5934010 .60 704224 .19 N 70.22338626 W 148.35198896 7341.83 2782.61 6821.44 89.13R 8.00 6.39 5933989. 20 704321 .67 N 70.22332060 W 148.35120743 7348.05 2780.22 6828.70 90.21 R 8.00 6.39 5933987. 00 704329 .00 N 70.22331406 W 148.35114882 7419.03 2745.40 6914.05 89.87R 8.00 6.41 5933954. 42 704415 .22 N 70.22321870 W 148.35046050 7486.67 2695.64 7000.58 89.50R 8.00 6.44 5933906. 95 704503 .02 N 70.22308256 W 148.34976278 7539.85 2638.93 7074.14 --- 8.00 6.46 5933852. 19 704578 .03 N 70.22292745 W 148.34916976 7638.08 2513.68 7216.44 89.24R 0.00 6.47 5933730. 71 704723 .56 N 70.22258490 W 148.34802266 7646.80 2502.17 7229.20 89.18R 8.00 6.48 5933719. 54 704736 .62 N 70.22255342 W 148.34791978 7676.84 2455.40 7275.38 89.97R 8.00 6.49 5933674. 00 704784 .00 N 70.22242553 W 148.34754760 7690.29 2429.48 7297.62 89.85R 8.00 6.50 5933648. 67 704806 .91 N 70.22235465 W 148.34736837 7692.92 2423.92 7302.12 --- 8.00 6.50 5933643. 24 704811 .55 N 70.22233946 W 148.34733215 7738.10 2326.61 7380.05 --- 0.00 6.51 5933548. 00 704892 .00 N 70.22207340 W 148.34670418 Northi ng (Y) (ftUS] Easting (X) [ftUS] 5931029.18 697575.79 5934078.74 702607.41 5933548.00 704892.00 12-05\12-05\Plan 12-05A\12-05A (P7) Generated 6/11/2007 8:37 AM Page 2 of 2 ~" 12-05A (P7) `~E`~ prudhoe Bay Unit - EOA STRUCIURE DS-12 MaB~el¢ Paramelers SuRace bration NAD?] Ahska Slale Planea, Zone OA, l15 Feel MixeYaneous Modd: BGGM 200] Dip: Dale: JuN 01.2001 lal: N)013 58.618 NorlM1inB~ SB]1039.1811U5 Grid Loiw: af A99)18i0' Sbt: Y3-05 ND Ref: Rotary Tabb (69.SO fl above MSL) MaBOec: ~a33.825' FS: 5)65B.1nT Lan: W1083<32A]2 Envine~ 68]5]5.]BIiUS ScabFad:0.9BBBC43<53 Plen: 13-0SA(P]) SrvyOale: May31,300) 6000 6300 6600 6900 7200 7500 ~ 0 0 M ~ ~ I 2000 30 ~ ~ AS Tie{n Survey ~ ~ ~ TopWhipstock / : / :Base Whipstock 87~~ ~ KOP Crv 41100 9000 7800 _.._.._.._. ..~ .._,._. ...,_.._......_.._.._.._ E~d Crv 6000 6300 6600 6900 7200 7500 Vertical Section (ft) Azim = 72.56°, Scale = 1(in):300(ft) Origin = 0 N/-S, 0 E/-V 60 00 ............. : .... .... .......................:...................................: ............................... . ..: ......................................................................; ................................. 60 00 _.._.._....._..... _ .._ .._ _.._.._.._.._.._.._.._ _.._.._.._.._.._.._.._ ._.._.._.._.._.._.._.. ._.._.,_,._.._,._.._. _;._.,_.._....,._.._.._..., . . .. _.. _.. _.. _.. _.. _.. _,. _,. _.. _,. _.. .. _.. _.. _. ..~.. _.. _.. _...... _.. _.. _.. _.. _.. _.. _.. _.. _.. _.. _.. _..._.. _.. _.. _.. _.. _.. _ .. _.. _.. _.. _.. _ .. _.. _.. _.. _.. _.. _.. _.. _.. _.. _.. _.. _.. _.. _.. ....,...,...._.._. _.........._.._. _.._. ~._..,..._.._ _.._.._.._.._.._.,_.. ._....,._.,_,......., _„ .._....,._„_.._.._.._. .._.._.._.._.._......_ ~ 0 °0 7000 .............................:..................................<........,........,.......,., ....>....,..........,.,,...,...........;..................................,..................................:............................... 7000 ~ ._.._.._......_.._. ,._.._.,_.,_.._.._.._ _ .._.._.._.._... Z_ ._.._.._.._.. _.._.._.._,._.._.._.. _......_......_.._.._. _.._.._.._.._.._.._.._ ~ crv a~oo ~ I' ~ U ~ I ~ i : i : i .............................:..................................:........................... .......:..................................a............ ... ~ 8~~~ . . . ....................<EndCrvlTgt.~...............a............................... 8~~~ ~~, _.._.._.._.._.._.._.._:._.._.._.._.._.._.._.._..m.._.._.._.._.._.._.._ _..m.._.._.._.._.._.._.._.._.:_~~j _.._. _ ._.._ _.._.._.._.._.._..m.._. _ _.._..r.._.._.._.._.._ crv a~oo c.v wioo i i 12-0SA Tgt 3i _.._.._.._.._.._.._;._.._.._.._.._,.,..,_,,,,,,,;,,,,,,_.._....,._.._.._,._..' .. .._.._.._.._.._.._.. ._. _ ._.._ - - -.._ - . _ . . . .. ...~.._......_.. :, ..1205A7q.t5 .. - '~~ T 72-OSA Tgt 2 End Crv i ~ End Crv _ _ ^ - _ e - s~::BN1~t:_::s::a::ma_::_.; ::a - - _ .m..q.._.._..m.._. v v.._.._....._.._.....v v ..._.....e.._.._.._..' ' '.._.._.._..s.._.._ _ .....o.LG.IJ.d.TK6JC>TJA..o.._ ,.,~::>::"' ' " ' "" ' '. e .._.._ .._..~.._..~..~..~..e[.~..~..~..a..e..~..a..a...:,,~..~..~..~.._..~..~......~.._ ............._.._.._..~......o..~.. ' ' ' ~ „_,,...,_,,,.,._..m,._,..,,,.,,'#§dtS-.. .. ;.µ.. . .. . . . ;; .. m,,.........,.............._.._......_.._.._.._.._......_.._.._.._.,_.._.._,.,.....,._. 1'S"(~lr'' ' . ...,.. 2-05 (P7) ~~~ : : : i i Crv8/1D0 EndCrv .............................:..................................:...................................t........... .....................s......................... ~ ..........................:............. 9000 . Ena'CF'v... .. . 9000 Crv 8/10012-05A Tgt 4 Crv 8%100 ~ . 7" Csg Vt 90. pt 12-OSA Tgt 6 Crv Z5/100 End Crv TD I 41/2" Lnr 12-05 , 2000 3000 4000 5000 6000 7000 Vertical Section (ft) Azim = 72.56°, Scale = 1(in):1000(ft) Origin = 0 N/-S, 0 E/-V 7800 870~ 9000 M~ erg~ VvEtl 12-05A (P7) FIELD Prudhoe Bay Unit - EOA STRUGTU0.E DS-12 MaB~elic Panmeters SWam Loca~ion N4~2] Alacka SWIe Planec, Zone 00, US Feel Miccelianeoue IAodal: BGGM200) DiD~ 90.BBB° Dale'. JuN01,]00] Lal: N~01358.618 Noh~ing: 5931029.1BflU5 GriJCOm: «~,/99138]0' Sbl 12-05 NORaI: 0.olaryTabb(69.SOXaboveMSL) MaB~i~ '~~~8~5° F5: Sifi56.inT Lon: Wt<83I]3A]3 Easting: 69]515.)9XU5 SwleFac~:09998/43452 plen: 13-05A(F~ Srvy~ale: MayJ1,20a) 0 1000 2000 3000 4000 5000 6000 7000 8000 4000 ~ 3000 n n n Z ~ 0 °0 2000 c a> m U ~ . ~ 1000 v v v 0 4000 3000 2000 1000 0 0 1000 2000 3000 4000 5000 6000 7000 8000 «< W Scale = 1(in):1000(ft) E »> 12-OS/Plan 12-OSA . ~ ~i ~ _. ,: ~ ~ ~_ ~'' / ~ ~ '~ _ / ~~~ I ~ ~ ~ / ~ ' ' ~, _~ , ~% /j l i ~ I ~ , _ ~~~ ~ ~ I ~ ~ ~~ ~ , ~~ i , I ~ ~ ~ _ ' - ~ ~ ~~0 ',~~ ~ ~~~ I ~ i , ~ ~ ~ _ ~ ; ~ ~ ' ~ 0 ~~ ~t ~ ~~ ~~ ~ , ~ I ~ ,, ~ ~~ __ , ~ ~ ~~ , ~ ; ~ 2 I ~ ~ ~ ~ , ~~ : - _ , _ ~ ~~~ ~ ~ ~ ~ ~ ~~ ~~~ ~ ~~ ~ ~ ~ 0 ~~ ~ 3~ ~ ~, _ :, ~ - - _ i , I ~ ~~ 0 0 I ~ i ~ ~ ~ ~ , . . , ~ ~, ~ ~ ~ ~ _ ~ ~~ ~ ~~ , , ~ i ~ ~ ~ ~ , _ ~~ ~ ~ ~ ' _ , ~ ~ ~ ~~ ~ ~ o° ~ ` ~ %, ~; ~ : ~ j yo ; , ~,, ~ ~1 _ ~ ; ~ , ~ i ~ ,, _ ~ ~ o ~ ~ 0° ` , ~ ~~ ~ ~ ~ ~ _, - ~~ , ~ ' ~ ~ 6 ~ , ~ ~ ~ ~ ~ , ~,, ~~~ , , , . ~_ ~ , , , ~~ ~; ~ ~ , ~` ; - -~ ,~. ~D~~ i / _ , , ,,., ~ ~ ~ ~~ ~ ~ ,, _ ~~ ~ ~ ~ ~ ~ ~,. ~ ~ ~ i 0 ~ ~~ ' ~~ ~~ ~ ~ ~ / ~ ~ , ~ ~ ,~ ,. \ ~ _ ~ , ~~ ~ B ~ ~ ~ ; / 0~ '' ~ ~ ~ ~ ~ ~ ,i ~ ~ ~~ \ ~ ~ ~ ~ ~ ~, ' ~ ~ ~ ~ , ~ I ~ q , / , ~ ~ ~ ~ ~ \~ - ~ , , ~ ~, ~ ~ 0~~ ~' % ~ i ~ ~ ~ , ~ . ~- - ~ ~_ ~ __ - - _ -- -., ~ , ~ 600 O ~ ; , ;, ~~~ ~, j ~ ~ - - -- ,_ - - - . ~ ^~, / ~ 5~00 ~ ~ ~ o ~ ~ ~ / o ~~ o , '~~ ~~~, ~ ; ~ ~~ ~ ~ i ~O~ ~~ ~o `~'~ ~~, ~..., o~ ~`~ ~ ~ ~ ; ` ~~~~ ~ ~ ~ % o ~' ~O~ ~ _ ~ _ ~ % 2~~~ ~ o '~ ~ ~ ~ j O ~ ~o ` O ~ ~ ~ ~ ~ , ~~ ~ ~ ~~ . ~ ~" /0~ ~ O ~ ~ ~ ~~~ ~o ~~~~_ ~ , ~ O 12-OS (12-OS) - Plan 12-OSA • ~ ~~~t\\~~` ~~ ~ 4F A~ ,1 ~ q~'~ ~ .~ . .. ~'`p'•• • '~' t r : , , Y i~~ .9 ~ *:' 49TH *~d N : ~.. .... ...... .. . .. ...... . . ~r ~E~~y ~ ~ ~A, ;'. ~sr ~ o ~'Q.~ . _No. 4277-S .; ' ~„ / Z ~~ ,, •~- Z o p ~ `i\ IfEISMMI~~~~ ~\\~~.~ ~ I HEREBY CERTIFY THAT I AM )PERLY REGISTERED AND LICENSEO PRACTICE LAND SURVEYING IN : STATE OF ALASKA AND THAT IS PLAT REPRESftdTS AN AS- iLT SURVEY MADE BY ME, AND ~T ALL DIMENSIONS AND OTHER fAILS A E C RRECT~ fE ~ ~~C~~ ~ - IJEW WE.i..L I..OGATIUIJ - ~x~ST. WEL~ LoC.n.T io1.1 GO -dR I~ 1 ~.I l~.T~'S ~^ ~S Y = 5,93~,029.18 x = 697,575.79 LAT = 70°12~56.618' LONG = 1~+8°24'22,472~ ~6 Y = 5,930,909.77 X = 697,587070 LAT = 70°~2 ' S5.440~~ LONG = 148~24t22.217" ~7 " Y = 5,93o,79Q.35 X = 697,599.61 LAT = 70°12'S4.263" -- ~ONG = 148°24~21.962" i , ~~,~~: ,•~ = z~~ ,. #8 Y = 5,93o,67a.93 '`. X = 697,611,52 LAT = 70°12~53.080" ~oNC = 148°24t2~.7o7~~ D.S. 12 WELLS 5, 6,7. ~ 8 LOC/~-TIONS /a5-P~LJILT AtlanticRichfieidCompany Q DATE: DRAWING No: NORTH AMERICAN PRODUCING DIVISION ~~/L3~oj ALASKA DISTRICT -- PRUDHOE BAY ~J • ~ • TREE= GRAY GEN2 WH_LHFJ\D = GRAY ACTU4TOR = AX~SON KB. ELEV = 73' BF. ELEV = KOP = 3300' Max Angle = 45 @ 5300' DatumMD= 10382' Datu m ND = 8800' SS ~ 13-3/8" CSG, 72#, N-80, ID = 12.34T' H Z7Z7' Minimum ID = 3.725" @ 10125' 4-1/2" OTIS XN NO-GO NIPPLE 5-1 /2" TBG-PC, 17#, L-80, .0232 bpf, ID = 4.892" 6360' TOPOF 4-1/2" TBG-PC 6360' TOPOF7-5l8"LNR 6422' ~ 41/2" TBG-PC, 12.6#, L-80, .0152 bpf, ID = 3.958" ~-~ 1013T PERFORATION SUNMARY R~ LOG: BHCS ON 11l16/79 A NGLE AT TOP PERF: 29 @ 10250' Note: Refer to Production DB for historical erf data SIZE SPF NTB~VAL Opn/Sqz DATE SEEPAGE 2 FOR PERFOR4l10N DATA ~ 2~O 5 CANNOT BETPULLEDSLIFT VALVES 2238' 5-1/2" CAM BAL-O SSSV NIP, ID =4.562" GAS LIFf MANDR~S ST ND ND DEV T(PE VLV LATCH PORT DATE 1 3079 3076 8 RK 2 5418 5034 39 RK 3 6251 5631 39 RK 4 7078 6223 36 BK-2 5 7615 6616 37 BK-2 6 8154 7023 35 BK-2 7 8695 7453 34 BK-2 8 9079 7762 31 BK-2 9 9427 8049 23 BK-2 10 9772 8342 20 BK-2 11 9921 8471 19 BK-2 ~60' ~--~5-1/2"X 4-1/7' XO 10009' ~4-1/2" BAKER PBR ASSY I 10030~ 7-5/8"X 4-1/2" BAKER SAB PKR 10034' 5-1/2"BAKERMLLOUTEXT 10040' 5-1/2"X 41/2" XO 10125' 4-1/2" OTiS XN NO-GO NIP, ID = 3.725" 10125~ 4-1/2" XN RUG (03/01/03) 10137~ 4-1/2" BAKER SHEAROUT SUB 10132' ELMDTTLOGG~ 12/28/90 10363' H FISH - 20" SAMRE BAILER (12/91) ~PBTD H 10884' 7-5/8" LNR, 29.7#, L-80, .0459 bpf, ID = 6.875" 10970' 9-5/8" CSG, 47#, S-95, ID = 8.681" 11086~ TD 11120' Di4TE REV BY COMMBVTS DATE REV BY COMN~NTS 11/24l79 ORIGINALCOMPLETION 02/27/03 DCRIKK CORRECTIONS 12/13/90 LAST WORKOVER 03/01/03 JBNYKK SET XN PLUG 12/12/00 S6-SLT CONVERTEDTOCANVAS 02/27/01 SIS-ND FIN4L 01/02/02 f~fV/TP CORR~l10NS 02I05/03 ATD/TP D~EfE WA NER SAFEfY NO PRUDHOEBAY UNIT WELL: 12-OS P6~MT No: 1790550 APINo: 50-029-20391-00 S~ 17, T10N, R15E, 817.45' F~ & 3358.43' FNL BP F~cploration (Alaska) • • ~ Oilfield Services, Alaska Schlumberger Drilling & Measurements 2525 Gambell, Suite 400 Anchorage, AK 99503 Tel (907) 273-1766 Fax(907)561-8367 Monday, June 11, 2007 Jim Nigh ~ Prudhoe Bay 12-05A (P7) BP Exploration (Alaska) Inc. Nabors 7ES Close Approach Analysis We have examined the potential intersections of subject well with all other potentially conflicting wells, according to the BPA Directionai Survey handbook (BPA-D-004) dated 09/99. Method of analvsis: 1. A list of wells to be analyzed is created in Compass by performing a global scan with an initial search radius of two thousand feet with an increment of one hundred feet for every one thousand feet of ineasured depth in the subject welL 2. Wells are analyzed using the Compass Anti-collision module (BP Company setup) with major risk safety factors applied. For problem wells that are plugged and abandoned or that can be shut in, risk-based safety factor may be used, with client notification. 3. All depths are relative to the planned well profile. Survev Proaram Instrument Type Start Depth End Depth CB GYRO MS 96.50'md 6096.50'md BLIND 6096.50'md 6400.00'md MWD + IFR + MS 6400.00'md 13831.Q4'md Close Approach Analysis results: Under method (2), note. Well 12-26 does not pass the conventional rule. It has been determined to gyro the offset well. Once the gyro survey is loaded, another global scan will be performed. All data documenting these procedures is available for inspection at the Drilling & Measurements Directionat Planning Center. Close Approach Drilling.Aids to be provided: A drilling map and traveling cylinder will be provided. Checked by: Scott DeLapp 06/11/07 ~ • • • BP Alaska Anticollision Report ~ ~ _ _! ! _ FieldPrudhoe Bay SitePB DS 12 We11:12-05 'WellpathElan 12-05A Travelling Cylinder Azimuth (TFO+AZI) (deg~ vs Centre 3 • • ~ • Target: 12-OSA Poly Site: PB DS 12 Well: 12-05 Drilling Target Conf.: 95% Based on: Plan: 12-OSA wp06 Description: Vertica] Depth: 8635.00 ft below Mean Sea Level Map Northing: 5933970.00 ft Local +N/-S: 2799.44 ft Map Easting : 702945.00 ft Local +E/-W: 5444.64 ft Latitude: 70° 13'24.131 N Longitude: l 48°21'44.334W Polygon X ft Y ft Map E ft Map N ft 1 0.00 0.00 702945.00 5933970.00 2 975.79 -175.61 703925.00 5933820.00 3 1585.56 -346.63 704539.00 5933665.00 4 1888.96 -641.69 704850.00 5933378.00 5 1958.44 -471.44 704915.00 5933550.00 6 1974.09 -217.75 704924.00 5933804.00 7 2143.4~ 22.91 705087.00 5934049.00 8 2308.53 99.62 705250.00 5934130.00 9 2432.15 121.40 705373.00 5934155.00 10 2449.72 716.17 705375.00 5934750.00 11 318.11 106910 703235.00 5935047.00 ~ ~ O O O O O O O O O O r~ i ~ n r~ ~-- m O O O O O O ~i ~ n r~ O C O C + rr • i • • BP Alaska Anticollision Report ~4mpap~ _ BP ArnoCO , Date 6l'12E2(IQ-7 Time 13_4~ '~9 ~: ~ P~ge:. 4 ., ~ ; PrS~dhos B~y = ~'~ela . , ~ ~ ~TteCerene~ Sater ~ P~ G~S 1'2 Go-bXda~tate~l~) Ite~`er-eri~e, ,: ~: We11. 13~5; 7rue: hlt~rtt~ ," , I2~ferenee~C'elY.., ; '92-05" ~~ ° „' .. . ~grtical.~'V~)I#ei'ei~ensee' 12-,f~5Apl~n69:5.` . " ' ,, ~ ~~Fera~sc~-'~ye~lpa~h: .Plan ~~2-U5A, ~ ~ " , ,~ ~ ~ ,. ' ! , - . °~ ` ~, ;' _: `' ISb:~ "Ota~le: GLOBAL SCAN APPLIED: All wellpaths within 200'+ 100/1000 of reference - There are LL~QIi€Baeells in thisRh'thl~pal Plan & PLANNED PROGRAM Interpolation Method: MD Interval: 5.00 ft Error Model: ISCWSA Ellipse Depth Range: 6100.~0 to 13831.94 ft . Scan Method: Trav Cylinder North Maximum Radius:10000.06 ft Error Surface: Ellipse + Casing Survey Program for Definitive Welipath Date: 5/31/2007 Validated: No Version: 7 Planned From To Survey Toolcode Tool Name ft ft 96.50 6096.50 1: Camera based gyro multisho CB-GYRO-MS Camera based gyro multish ot 6096.50 6400.00 Planned: Plan #7 V1 BLIND Blind drilling 6400.00 11820.00 Planned: Plan #7 V1 MWD+IFR+MS MWD + IFR + Multi Station 11820.00 13831.94 Planned: Plan #7 V1 MWD+IFR+MS MWD + IFR + Multi Stafion Casing Points ; ~„ ,: ~ ~T~'D ~ ~~biamete~` ~n~~Sr~e 1~1attt e ~ ~ .. e fE ~ °~ . ir~~ =, -. ; . . „ ., ,. <~'. .., if~ „ ,. _. ~ ,_. : , - _ ~ ~. . ~ ~ , ~ , . ;, , ,, ~ .~. , „ . ,.,,., „ . , - ... .I . ,,,e , ,,. ,r,: , , ,.,,,, ,,, ,,,, ,,,, ,,,,,.,, .,, „ , ,,, ~ 2723.50 2721.75 13.375 17.500 13 3/8" 6100.00 5523.28 9.625 12.250 9 5/8" 11883.39 8692.50 7.000 13831.94 8734.50 4.500 8.500 7" 6.125 41/2" Summary ~ ~ ' °; (J~FseC K'~ll~~~h ' , - ---?F . . , lt~tereu~~ "`*f~'~ ; ~~'~C~+` ~ fi1tF1G+~ " ~I~~h4e ` ~SY1te W~IC ; "~ , , , ~#3?~fl~a€th :~~ `~ ~:,MU ` NID ' ~t~riSr~ ~~. . I#~~~un '4~?~~tY~n~ ~~~t = W, , ~ ... ,: ;, ~ ~ ,. ;., :,. „ ~- r ~; ~: ,:-~ .,s ~:-:, . ~ ~:'`;~f . , ~'~ t~ ~ f~ .;t it ~S ~ ~~ ~ .~ ~ , , PB DS 03 03-15 03-15 V1 Out of range PB DS 03 03-15AL1 03-15AL1 V6 Out of range PB DS 12 12-01 12-01 V1 897722 8705.00 1226.43 813.70 412.73 Pass: Major Risk PB DS 12 12-02 12-02 V8 12577.47 11735.00 638.88 373.40 265.47 Pass: Major Risk PB DS 12 12-03 12-03 V1 6101.15 6420.00 1052.26 111.53 940.74 Pass: Major Risk PB DS 12 12-04 12-04 V1 Out of range PB DS 12 12-04A 12-04A V1 Out of range PB DS 12 12-05 12-05 V2 6205.87 6210.00 8.48 464.30 -455.82 FAIL: Major Risk PB DS 12 12-06 12-06 V1 12602.76 10820.00 1796.921177.78 619.15 Pass: Major Risk PB DS 12 12-06A 12-06A V1 9066.93 8645.00 1486.21 777.60 708.61 Pass: Major Risk PB DS 12 12-07 12-07 V1 6100.00 6495.00 1514.59 473.85 1040.74 Pass: Major Risk PB DS 12 12-07A 12-07A V1 6100.00 6490.00 1513.79 473.82 1039.96 Pass: Major Risk PB DS 12 12-08 12-08 V20 6100.00 8790.00 4763.75 340.51 4423.24 Pass: Major Risk PB DS 12 12-08 12-08A V1 Out of range PB DS 12 12-08 12-08B V1 Out of range PB DS 12 12-08 12-08C V23 Out of range PB DS 12 12-22 12-22 V1 6100.00 6645.00 1058.18 371.13 687.05 Pass: Major Risk PB DS 12 12-25 12-25 V1 6100.87 5975.00 674.48 392.31 282.18 Pass: Major Risk PB DS 12 12-26 12-26 V10 9158.16 8810.00 313.87 306.37 7.50 Pass: Major Risk PB DS 12 12-27 12-27 V1 6103.67 6000.00 799.14 368.06 431.08 Pass: Major Risk PB DS 12 12-27A 12-27A V1 6103.67 6000.00 799.14 368.06 431.08 Pass: Major Risk ~ PB DS 12 12-28 12-25 V1 10700.00 10405.00 1448.421293.04 155.37 Pass: Major Risk PB DS 12 12-28A 12-28A V2 9343.45 8715.00 1416.30 856.98 559.32 Pass: Major Risk PB DS 12 12-30 12-30 V1 6100.00 6300.00 241125 317.60 2093.64 Pass: Major Risk PB DS 12 12-32 12-32 V2 13229.14 11665.00 1203.48 291.80 911.68 Pass: Major Risk PB DS 17 17-12 17-12 V1 Out of range ~ ~ _ _~ _ _ ~ ___ __ __. ', FieldPrudhoe Bay ' Site PB DS 12 ' We11:12-05 ',WellpathElan 12-05A Travelling Cylinder Azimuth (TF~+AZI) (deg] vs Centre • ~ # • a ~ ~ ~ ~ SARAH PALIN GOVERN R , • ~SA ~~ ~ t7r[~7 333 W. 7thAVENUE, SUITE 100 COI~TSER~A~'IO1~T COMDII5SIOIQ ANCHORAGE, ALASKA 99501-3539 PHONE (907) 279-1433 FAX (907) 276-7542 Greg Hobbs Senior Drilling Engineer BP Exploration Alaska, Inc. PO Box 196612 Anchorage, AK 99519-6612 Re: Prudhoe Bay Fie1d, Prudhoe Bay Oil Pool, PBU 12-OSA BP Exploration Alaska, Inc. Permit No: 207-053 Surface Location: 699' FSL, 28' FEL, SEC. 18, T10N, R15E, UM Bottomhole Location: 3021' FSL, 2081' FWL, SEC. 16' T10N, R15E, UM Dear Mr. Hobbs: Enclosed is the approved application for permit to redrill the above referenced development well. This permit to drill does not exempt you from obtaining additional permits or an approval required by law from other governmental agencies and does not authorize conducting drilling operations until all other required permits and approvals have been issued. In addition, the Commission reserves the right to withdraw the permit in the event it was erroneously issued. Operations must be conducted in accordance with AS 31.05 and Title 20, Chapter 25 of the Alaska Administrative Code unless the Commission specifically authorizes a vaxiance. Failure to comply with an applicable provision of AS 31.05, Title 20, Chapter 25 of the Alaska Administrative Code, or a Commission order, or the terms and conditions of this permit may result in the revocation or suspension of the permit. When providing notice for a representative of the Commission to witness any required test, contact the Commission's petroleum field i: ~g~r~ DATED this 1 day of May, 2007 cc: Department of Fish & Game, Habitat Section w/o encl. Department of Environmental Conservation w/o encl. . ' a STATE OF ALASKA ALAS~IL AND GAS CONSERVATION COMMISSION PERMIT TO DRILL 20 AAC 25.005 ~E~~I~,f~D ~~f~~~ APR 1 S 2007 Alaslca Cil & Gas Cons. Commission 1 a. Type of work ^ Drill ~ Redrili ^ Re-Entry 1 b. Current Well Class ^ Exploratory ^ Development Gas ^ Service ^ Muitiple Zone ^ Stratigraphic Test ~ Development Oil ^ Single Zone 1 c. Specify if well is propo~ir~r.age ^ Coalbed Methane ^ Gas Hydrates ^ Shale Gas 2. Operator Name: BP Exploration (Alaska) Inc. 5. Bond: ~ Blanket ^ Single Well Bond No. 6194193 11. Well Name and Number: PBU 12-05A 3. Address: P.O. Box 196612, Anchorage, Alaska 99519-6612 6. Proposed Depth: MD 13835 TVD 8735 12. Field / Pool(s): Prudhoe Bay Field / Prudhoe Bay 4a. Location of Well (Governmental Section): Surface: 699' FSL 28' FEL 18 UM SEC T10N R15E 7. Property Designation: ADL 028331 Pool , , . , , , Top of Productive Horizon: 3596' FSL, 320' FWL, SEC. 16, T10N, R15E, UM 8. Land Use Permit: 13. Approximate Spud Date: June 1, 2007 Total Depth: 3021' FSL, 2081' FWL, SEC. 16, T10N, R15E, UM 9. Acres in Property: 2560 14. Distance to Nearest Property: 19,420' 4b. Location of Well (State Base Plane Coordinates): Surface: x-697575 y-5931030 Zone-ASP4 10. KB Elevation Plan (Height above GL): 49 feet 15. Distance to Nearest Well Within Pool: ~~' 16. Deviated Wells: Kickoff Depth: 6100 feet Maximum Hole An le: 98 de rees 17. Maximum Anticipated Pressures in psig (see 20 AAC 25.035) Downhole: 3856 Surface: 2993 18. Casin Pr ram: S ecifications ` To - Settin De th = Ba tt m uant" of Cem~nt c.f, or sacks Hole Casin Wei ht Grade Cou lin Len th MD TVD MD TVD includin sta e data 8-1/2" 7" 26# L-80 BTC-M 5930' 5950' 5417' 11880' 8690' 598 sx LiteCrete sx Class'G' Tieback 7" 26# L-80 TC-II 5950' SurFace Surface 5950' 5417' 394 sx Class 'G' 6-1/8" 4-1/2" 12.6# 13Cr 0 VamTo 0' ce ce ' Uncement d Slotted Lin r 1 ~~J ~s o ~ 3 19. ' PRESE NT WELL CONDITION SUMMARY{To be completed for Redrilk and Re-entry Operations) Total Depth MD (ft): 11120 Total Depth ND (ft): Plugs (measured): 9522 10125 Effective Depth MD (ft): 10884 Effective Depth TVD (ft): 9315 Junk (measured): 10363 Casing Length Size CementVotume MD TYD Conductor / Structural $0' 20" 400 sx Arcticset II 80' 80' Surface 2727' 13-3/ " 4800 sx Permafrost I I 2727' 2725' Intermediate 11086' 9-5/8" 1650 sx Class'G' 11086' 9492' Pro uction Liner 4548' 7-5/8" 475 sx Class 'G' 6422' - 10970' S753' - 9390' Perforation Depth MD (ft): 10250' - 10451' Perforation Depth TVD (ft): $757' - 8934' 20. Attachments ~ Filing Fee, $100 ^ BOP Sketch ~ Drilling Program ^ Time vs Depth Plot ^ ShaAow Hazard Analysis ^ Property Plat ^ Diverter Sketch ^ Seabed Report ~ Drilling Fluid Program ~ 20 AAC 25.050 Requirements 21. Verbal Approval: Commission,~epresentative: Date: 22. I hereby certify that th or goi is true and correct. Contact Joshua Sudderth, 564-4342 Printed Name Gre o Title Senior Drilling Engineer Prepared By Name/Number: ^ Terrie Hubble, 564-4628 Si nature `"~ r Phone 564-4191 Date ' Commission Use On( Permit To Drill Number:v~D~OS30 API Number: 50-029-20391-01-00 Permit Approval See cover letter for Date: ••~ otherre uirements Conditions of ApprovaL ~ If box is checked, well may not be used to explore for, test, or produce coalbed methane, gas hydrates, or gas contained shales: Samples Req'd: ^ Yes No Mud Log Req'd: ^ Yes ^ No HZS Measures: [,~f es No Dir ional Survey Req'd: ~Yes ^ No Other: Date ,~~~"O APPROVED BY THE COMMISSION , COMMISSIONER Form 10-401 Revised 12/2005 ~~ f~~ N A L v ~ ~ Submit In DupliCBte . ~ To: Tom Maunder, Petroleum Engineer Alaska Oil & Gas Conservation Commission From: Joshua Sudderth, 27E Drilling Engineer ~ Date: April 17, 2007 ~ Re. 12-OSA Sidetrack Pernut to Drill Approval is requested for the proposed rotary side track of PBU well 12-05. Well 12-05 is an ivishak producer that is currently shut-in due to IA x OA communication. The well has been shut in and secured with a XN plug set at 10,125' M D (03/01 /03). Well 12-05 was drilled in 1979 and completed in 1980 in Z4A and Z4B. Initial capacity was approximately 7000 bopd at a 1000 GOR. The well continued to produce low GOR until mid-1984 when a RWO was required to install gas lift mandrels. Early tests after the RWO showed the well was producing at over 90% water cut. Crossflow from the watered out lower zone was suspected while the well was shut in. In 1986, the water cut began increasing sharply while oil rate declined to approximately 200 BOPD over the course of the next 18 months. Communication between the 9-5/8" and 13-3/8" casing strings was confirmed in June 1986. Several leaks near the surface were identified with a noise log in March of 1988. Graphite was pumped down the annulus twice during 1989 in an effort to reduce the communication. The well continued to produce on gas lift with a waiver. In 1990 a channel down to the aquifer was identified which, in combination with the lower most set of perforations, was contributing 60% of the well's water production. While prepping for a water shut off, an obstruction was tagged and a Cretaceous leak was found - along with tubing leaks at mandrels 1, 3, and 8. The squeeze was performed with coil and a RWO was performed to run new tubing and a 7-5/8" liner from TD back up to 6,422' MD. Combination Sag/Zone 4 fracture stimulation was pumped in 1991 and repeated in 1993 with no meaningful impact on production. Production declined from a high of around 1000 BOPD in 1994 to approximately 500 BOPD in 1995. Production was maintained at this level until 1998 when offset injector 12-25 was removed from the Ivishak flood to pilot test water flooding a Sag pattern. Further decline was observed when injector 12-27A was moved out of the pattern to the west and into the graben to support producers there. The well has been shut-in since February of 2000 and has produced 14.0 MMBO and 21.2 MMBW in its lifetime. A 6/00 caliper found the condition of the lower half of the tubing to be in poor condition with multiple penetrations. 12-05 was last tested on 2/5/00 for 19 bopd and 1052 BWPD with 5 MMSCFD in lift gas. This test is not representative of the wells ability to produce due to multiple holes in the tubing. A combination MIT-TxIA to 3000 psi passed on 7/19/03. The 12-05A sidetrack is currently scheduled for Nabors 27E beginning the first week of June, 2007. 12-05A Permit to Drill Application Page 1 ~ Planned Well Summarv ~ Well 12-05A Well Producer Target Sag River T e Rota Sidetrack Ob'ective AFE Number: PBD 4P 2620 API Number: 50-029-20391-01 Surface Northin Eastin Offsets TRS Location 5,931,029.18 697,575.79 698' FSL / 27' FEL 10N, 15E, 18 Target Northin Eastin Offsets TRS Locations 5,934,075 703,115 1683' FNL / 320' FWL 10N, 15E, 16 5,934,075 703,497 1693' FNL / 702' FWL 10N, 15E, 16 5,934,050 703,810 1727' FNL / 1014' FWL 10N, 15E, 16 5,934,020 704,147 1767' FNL / 1350' FWL 10N, 15E, 16 5,933,987 704,329 1804' FNL / 1531' FWL 10N, 15E, 16 5,933,674 704,784 2130' FNL / 1977' FWL 10N, 15E, 16 Bottom Northin Eastin Offsets TRS Location 5,933,548 704,892 2258' FNL / 2080' FWL 10N, 15E, 16 Planned KOP: 6,100'md / 5,523' tvd Planned TD: 13,835' md / 8,735' tvd Ri : Nabors 27E RTE: 49' Surface and Anti Collisioin Surface Shut-in Wells: There are no wells requiring surface shut-in prior to moving onto the well. Close Approach Shut-in Wells: If the planned pre-rig gyros do NOT allow wells 12-02 and 12-26 to pass major risk criteria, then they will be evaluated for shut-in requirements. 12-05A Permit to Drill Application Page 2 ~ Well Control ~ Well control equipment consisting of 5,000 psi working pressure pipe rams (2), blindlshear rams, and an annular preventer will be installed and is capable of handling maximum potential surface pressures. BOPE and drilling fluid system schematics are currently on file with the AOGCC. Well Interval: 8'/a"Intermediate Hole Maximum anticipated BHP: 3,856 psi at 8,623' TVDss. (8.6 max pore ressure) Maximum surface pressure: 2,993 psi (based upon BHP and a full column of gas from TD @ 0.10 psi/ft) Calculated kick tolerance: > 150 bbls with 11.8 p g EMW FTT and 11.6 ppg MW Planned BOPE test pressure: 250 psi low / 3,500 psi high 7 day test cycle (Pre drilling phase) 14 da test c cle (Drillin o erations) Well Interval: 61/8" roduction interval Maximum antici ated BHP: 3,200 si at 8,650' TVDss. Maximum surface ressure: 2,335 si (based u on BHP and a full column of as from TD @ 010 si/ft) Calculated kick tolerance: Infinite with 9.1 EMW FTT. Planned BOPE test pressure: 250 psi low / 3,500 psi high 14 da test c cle (Drillin o erations) Planned com letion fluid: 8.6 seawater / 71 Diesel BPXA requests a var e,~.thP r•-~•~;~;~„~ c,f 20 AAC 25.035 (e)(10)C regarding the function pre~s~zte test requirement a e nse o OP ram type equip for other than well control or equiv~nt"purposes, except when rout~of BOP ra e equipment may compromised their e~f€~,~tiveness. (Example would be en pipe rams are inadvertently close a tool joint during ine ions.) The activities associated with this request will not compro 'se e mtegrity o ' ment. -.`,~ C~ ~ ~" t~t~~ ~ ~/~ H2S i c~ ~~c~c, y~ r€~c:~~r-.:~ ..T~~t.~ z~.~-~-~ ~ _{~ ~, ?3~.. J `7' , ~___~ f ~~~'~ `~. DS-12 is designated as an H2S site. Standard Operating Procedures for H2S precautions should be followed at all times. Recent H2S data from the pad is as follows: Closest well to SHL Latest H2S reading Closest well to BHL Latest H2S reading 12-04 120 ppm 12-26 15 ppm 12-06 50 ppm 12-22 50 ppm Directional Proqram Kick Off Point 6,100 ft MD Maximum Hole Inclination: ~98° @ 12,039 ft MD. Proximity Issues: 12-02 and 12-26. Plan is to run gyro surveys in these two wells prior to drilling to reduce the uncertainty in the well positions due to older survey techni ues. Surve Pro ram: Standard MWD + IFR/MS/Cassandra Nearest Well within ool: Well 17-12 @ 541' Nearest Pro ert Line 19,420' to Unit Boundar to the South 12-05A Permit to Drill Application Page 3 ~ Loqqinq Proqram ~ Hole Section: Re uired Sensors / Service 8 1/2" intermediate: Real time MWD Dir/GR/Res/PWD 6 1/8" roduction: Real time MWD Dir/GR/Res/AzDen/PWD/StrataSteer Cased Hole: USITIGR\CCL (9 5/8" Casin ) O en Hole: None lanned Mud Proqram Hole Section / o eration: Cut & Pull tubin and casin . Set EZSV and W hi stock T e Densit MBT PV YP API FL H BRINE 8.6 N/A 9.0 -10.0 Hole Section / o eration: Drillin 8 1/2" interval from ~6,100' md to ~11,880' md T e Densit Chlorides PV YP API FL H LSND 9.5-11.6 <600 15-22 20-24 4.0 - 6.0 9.0 - 10.0 Hole Section / o eration: Drillin 6 1/8" production interval to TD ~13,835' md T e Densit LSRV PV YP API FL H FloPro SF 8.4 - 8.6 >20,000 8-15 22 - 30 6- 9 9.0 -10.0 Casinq / Tubinq Proqram Hole Size Casing/Tubing Size Wt. Grade Connection Length Top md / tvd Bottom md / tvd 8'h" 7" 26# L-80 BTC-M 5,930' S,950' / 5,417' 11,880 / 8,690' Tieback 7" 26# L~80 TC-II 5950' Surface 5,950' / 5,417' 6 1/8" 4'h" 12.6# L-80 Slotted IBT-M 2105' 11,730' / 8,607' 13,385'/ 8,734' Tubing 4'h" 12.6# 13Cr-80 VamTOP 11730' Surface 11,730' / 8,607' 12-05A Permit to Drill Application Page 4 ~ ~ Casinq /_ Formation Integrity Testinq Test Test Point Test Type Test pressure 9 5/8" casing with EZSV EZSV @~6,110' 30 min recorded 3,500 psi surface 9 5/8" window (8 %2" OH) 20' new formation FIT 11.6 ppg EMW 7" casing Float equipment to surface 30 min recorded 3,500 psi surface 7" casing shoe (6 1/8" OH) 20' new formation FIT 9.1 ppg EMW 4'/z"" Tubing Packer @-11,625' MD 30 min recorded 3,500 psi surface 4%" tbg x 7" csg annulus Tubing-Casing annulus from acker ~11,625" MD 30 min recorded 3,500 psi surface W 1,500 si on Tb Cementinq Proqram Casing String: 7" 26# L-80, BTC-M, Intermediate casing Slurry Design Basis: Lead slurry: 5,280' of 7" x 8%2' annulus with 40% OH excess plus liner lap. Lead TOC @-5,950' MD. o Tail slurry: 500' of 7" x 8/ annulus with 40 /o OH excess plus --80' of 7 26# casin shoe track. Tail TOC 11,380' MD. S acer 20 bbls MudPush II at 11.5 Fluids Sequence / Volume: Lead Slur 11.7 LiteCrete - 956 cu ft 1.6 cu ft/sk 598 sx Tail Slurry 15.8 ppg Class G- 106 cu ft (1.16 cu ft/sk) 91 sx. Casin String: 7" 26# L-80, TC-II , Tie-Back Casing Slurry Design Basis: Tail slurry: 3050' of 7" x 9 5/8", 47# casing annulus with 5% excess. Tail TOC 2900'MD. Pre-flush 20 bbls viscosified sea water Fluids Sequence / Volume: Freeze rotect 56 bbls diesel freeze rotect rotect to 2200 ft MD p ~p ~ Spacer 18 bbls weighted spacer Tail Slurry 15.8 ppg Class G-460 cu ft(1.17 cu fUsk) 394 sx. Disposal Annular In'ection: No annular injection in this well. Cuttings Handling: Cuttings generated from drilling operations are to be hauled to the Grind and Inject station at DS-04. An metal cuttin s should be sent to the North Slo e Borou h. Fluid Handling: All drilling and completion fluids and other Class II wastes are to be hauled to DS-04 ~ for in ection. All Class I wastes are to be hauled to Pad 3 for dis osal. 12-05A Permit to Drill Application Page 5 .~ ~ ~ Casir~g / Formation Inteqritv Testinq Test Test Point Test Type Test pressure 9 5/8" ca ~ng with EZSV EZSV @~6,110' 30 min recorded 3,500 psi surface 9 5/8" windo (8'/2" OH) 20' new formation FIT 11.8 ppg EMW 7" casin Float equipment to surface 30 min recorded 3,500 psi surface 7" casing shoe (6 1" OH) 20' new formation FIT 9.1 ppg EMW 4~h"" Tubing Packer @--11,625' MD 30 min recorded 3,500 psi surface , 4 h" tbg x 7" csg annulus Tubing-Casing annulus from acker ~11,625" MD 30 min recorded 3 500 psi surface W 1,500 si on Tb \~ Cementinq Proqram ~~~~- ~ ~-~`~~~~ ~ Casing String: 7" 2 L-80, BTC-M, Intermediate casing Slurry Design Basis: Lead s rry: 4,850' of 7" x 8'h" annulus with 40% excess. Lead TOC C«3 ~5,950' D. ~ o Tail slur . 1,080 ot 7 x 8/2 annulus with 40 /o excess plus ~90 of 7 26# casin sho track. Tail TOC ~ 10,800' MD. Fl i S acer 0 bbls MudPush II at 11.5 u ds Sequence / Volume: Lead Slur 1 7 LiteCrete - 879 cu ft 1.6 cu fUsk 598 sx Tail Slurry 15. ppg Class G- 212 cu ft (1.16 cu fUsk) 91 sx. ~ ~-` _- Casin Strin : 7" 26# L-80, TC-II , Ti -Back Casin Slurry Design Basis: Tail slurry: 3050' of 7" 9 5/8", 47# casing annulus with 5% excess. Tail TOC @2900 MD. Pre-flush 20 bbls visco ' ied sea water Fluids Sequence / Volume: Freeze rotect 56 bbls diesel fr ze rotect rotect to 2200 ft MD p ~p ~ Spacer 18 bbls weighted s cer Tail Slurry 15.8 ppg Class G-4 0 cu ft (1.17 cu fUsk) 394 sx. Disposal Annular In'ection: No annular injection in this well. Cuttings Handling: Cuttings generated from drilling operations are to be auled to the Grind and Inject station at DS-04. An metal cuttin s should be sent to he North Slo e Borou h. Fluid Handling: All drilling and completion fluids and other Class II wast are to be hauled to DS-04 ' for in ection. All Class I wastes are to be hauled to Pad 3 r dis osal. 12-05A Permit to DriH Application Page 5 ~ Geoloqic Proqnosis ~ Formation Tops(TVDss) and Estimated Pore Pressures Est. Formation To s Uncertain Commercial Hydrocarborc Bearin Est. Pore Press. Est. Pore Press. Formation (7'VDss) ( eet) (Yes/No) (Psi) ( EMW) NOTE: All formation tops are required from 1000' above proposed KOP to TD for sidetracks NOTE: All formation tops are required from surface to TD for all new wells SV4 +/- 50' SVi +/- 50' UG4 -4605 +/- 50' UG3 -4805 +/- 50' UG1 -5500 +/- 50' W S2 -6075 +/- 50' W S 1 -6355 +/- 50' CM3 -6605 +/- 50' CM2 -7135 +/- 50' CM1 -8020 +/- 50' THRZ -8287 +/- 50' BHRZ -8451 +/- 50' LCU -8479 +/- 50' TKNG -8479 +/- 50' TJB Truncated +/- 50' TJA -8531 +/- 50' TSGR -8623 +/- 50' Y 3200 TSHU -8650 +/- 50' Y 3200 TD Criteria: Reach planned TD unless drilling conditions deteriorate. Final TD TBD by both rig and town geologist. 12-05A Permit to Drill Application Page 6 ~ ~ Fault Proqnosis The 12-OSA side track will cross one fault in the intermediate section. The target polygon is a hard line to the north, south, east and west. Fault 1 and fault 2limit the targets extent to the south and west. Well spacing requirements limit the target to the east and north. At 300 ft MD above the Sag River reservoir section, Well Plan 12-OSA penetrates Fault 2(8390-8490 ft TVD 11494-11651 ft MD). Fault 2 is down-thrown to the west with 10- 15 ft of displacement and has an uncertainty of +/-50 ft TVD. 12-OSA will not penetrate any mapped faults in the Sag River reservoir interval. Fault Coordinates for Ma in X Y Fault #1 First Point - Not intersected 702748 5933874 Fault #1 Second Point - Not intersected 703158 5933787 Fault #2 First Point - Intersected 702914 5934319 Fault #2 Second Point - Intersected 702905 5933913 12-05A Permit to Drill Application Page 7 ~ ~ 12-05A Operations Summarv Current Status: - `XN' Plug at 10125' MD. - CMIT - TxIA - Passed to 3000 psi (7/19/03) - MIT-OA to 2500 psi - Passed 6/18/99 Pre-Riq Operations: 1. SLICKLINE: Pull XN plug at 10125' MD. 2. COIL TUBING: Plug and abandon the open perforations with ~38 bbls of 15.8 ppg cement, leaving the TOC just above the 4 Y2" PBR. Cement volume based on the following calculations: - 747' of 7 5/8" liner (cap. = 0.0459 bbl/ft) = 34.3 bbls - 237' of 4-1/2" tubing tail (cap. = 0.0152 bbl/ft) = 3.6 bbls 3. SLICKLINE/WIRELINE: Drift tubing to estimated TOC. Tag cement to verify TOC depth. 4. OTHER: Test cement plug to 3500 psi. Due to TxIA communication, will likely have to perform CMIT TxIA to test plug. 5. WIRELINE: Hole punch tubing at ~9900' (above TOC). 6. OTHER: Circulate tubing and IA to sea water. 7. WIRELINE: Jet cut the tubing joint at ~6300' MD. 8. OTHER: Bleed casing and annulus pressures to zero. Freeze protect to ~2,200' MD with diesel. 9. OTHER: Function all tubing and casing lock down screws. Repair and replace as necessary. Test 9-g/8" packoff to 5,000 psi for 30 minutes. 10. OTHER: Set a BPV. Remove well house and flow line. Level the pad as necessary. Riq Operations: 1. MIRU Nabors rig 27E. 2. Pull BPV. Circulate out diesel freeze protection and displace the well to sea water. Run and test TWC. 3. Nipple down tree. Nipple up and test BOPE to 3,500 psi high, 250 psi low. Pull TWC. 4. Unseat hanger. Pull and lay down 5 1/2" tubing from the cut at ~6,300' MD. 5. Rig up E-line. 6. Make up gauge ring / junk basket to drift 9-5/8" casing for EZSV. RIH and tag tubing stump. POH. ~ 7. Make up USIT/CCL. RIH, log from tubing stump to surface. 0~~~ 8. Make up EZSV for 9-5/8" 47# casing. RIH and set at ~6100' MD ~ a. Set EZSV ~5' above a collar. 9. Rig down E-line. 10. Test 9 5/8" casing to 3500 psi. 11. ND BOPE, split well head and change the 9 5/8" casing pack-offs. Test pack-offs. 12. NU BOPE and test break. ~ 13. PU and RIH with 9 5/8" Baker bottom-trip whipstock assembly. Orient whipstock and set on bridge plug. Shear off whipstock. 14. Displace well to 9.8 ppg LSND milling fluid. ~V.`~~J 15. Mill window in casing plus additional 20' beyond middle of window. ~'16. Conduct Leak-off Test. Targeting a minimum FIT of 11.8 ppg. POOH. ~t~~ 17. MU 8'h" directional drilling assembly. Drill the 8'/2" intermediate hole to the top of the Sag River at approximately 11,880' MD. Weight up to approximately 11.2 ppg prior to entering the HRZ. MW will need to be around 11.6 ppg prior to TD due to inclination. 12-05A Permit to Drill Application Page 8 i ~' 18. Circulate the well clean. POOH. ~_ ~,~5~~< `~~~~u~~~C~~~ 19. Run and cement a 7", 26#, L-80 drillin liner. ~ 9 20. Test liner top packer to 1000 psi. POOH. ~~~ 21. RU and run 7" tie-back casing string. 22. Sting into tie-back receptacle, PU and expose ports. Pump freeze protect and cement to cement tie-back string to 2880 ft MD. 23. ND BOPE. Cut casing, set slips, install pack-off and test. 24. NU BOPE. 25. Make up and RIH to the landing collar with the 6-1/8" drilling assembly. 26. Test 7" casing to TD to 3500 psi. Chart test for 30 minutes. 27. Drill out the 7" float equipment to the shoe. 28. Circulate the well over to 8.4 ppg solids free Flo Pro drilling fluid. 29. Drill out the shoe, plus 20' of new formation. 30. Conduct FIT to a minimum of 9.1 ppg EMW. 31. Drill 6-1/8" horizontal hole to TD at 13,835' MD. 32. Circulate the well bore clean, short tip to the shoe. Circulate bottoms up. POOH. 33. Pickup and RIH with 4 1/2" slotted production liner. Blank pipe will be run from the liner hanger through the heel. 34. At TD, release from liner. Set liner hanger/packer. Test liner top packer to 1000 psi prior to pulling out of seals. POOH. 35. Make up and run 4-1/2", 12.6#, 13Cr completion string. 36. Reverse circulate corrosion inhibited sea water. 37. Drop the ball and rod. Set the packer and immediately bring pressure up to tubing test pressure of 3500 psi. Chart this test for 30 minutes. Bleed the tubing pressure to 1500 psi. Increase the annular pressure to 3500 psi. Chart this test for 30 minutes. Notify the AOGCC to witness tubing and annular pressure test. 38. Pressure up on annulus to shear DCR valve 39. Set and test a TWC to 1000 psi. 40. Nipple down the BOPE. 41. Nipple up and test the tree to 5000 psi. Lubricate out the TWC. 42. Freeze protect tubing and IA to 2200' MD. 43. Secure the well with a BPV. RDMO. Post-Riq Operations: 1. Install well house and instrumentation. 2. RU slickline. RIH and pull ball and rod. 3. Install GLVs. 12-05A Permit to Drill Application Page 9 ~ ~ Drillinq Hazards and Continqencies POST THIS NOTICE IN THE DOGHOUSE I. Well Control A. The Sag River in this fault block is expected to be under-pressured at 7.1 ppg EMW. This pressure is estimated based on offset well pressures. II. Lost Circulation/Faults The 12-OSA side track will cross one fault in the intermediate section. The target polygon is a hard line to the north, south, east and west. Well Plan 12-OSA penetrates Fault 2(8390-8490 ft TVD 11494-11651 ft MD). Fault 2 is down-thrown to the west with 10-15 ft of displacement and has an uncertainty of +/-50 ft TVD. 12-OSA wi11 not penetrate any mapped faults in the Sag River reservoir interval. III. Kick Tolerance/Integrity Testing A. The Kick Tolerance for the intermediate hole section is >150 bbls with 11.6 ppg mud, 11.8 ppg FIT, and an 9.0 ppg pore pressure at the casing shoe. This FIT should prove up adequate formation strength for expected ECD's. B. The Kick Tolerance for the production hole section is infinite with 8.6 ppg mud, 9.1 ppg FIT, and an 8.6 ppg pore pressure. This FIT should prove up adequate formation strength for expected ECD's. IV. Integrity Testing Te~t Foir~t ' Test Depth T`~st type El~~ ~ ~ b~ al ~~~~ 81/2" KO 20-ft min new formation FIT 11.8 min 7" shoe 20-ft minimum from the 7" shoe FTT 9.1 min V. Stuck Pipe A. Stuck pipe not anticipated. B. There could be slight differential sticking issues within the reservoir, though risk is considered minimal with the short, vertical, slotted liner completion. VI. Hydrogen Sulfide A. DS 12 is designated as an H2S site. Standard Operating Procedures for H2S precautions should be followed at all times. VIII. Anti-Collision Issues A. Gyro surveys are planned for the 12-02 and 12-26 well bores. These wells will be evaluated for shut- in pending analysis of the of the gyro surveys. 12-05A Permit to Drill Application Page 10 REFERENCEINFORMATION 5URVEYPROGRAM C'OMPANY DETAILS Tiwl Pla n: 12-O~A wpOG ( I?-O ~rPlan 12-0 SA) l~u-orJinatc (N E) Rckrcnm: ~'cll Ccntrc 12-0~. True Nonh cpth Fm U:plh To Suncy iPlan ~ ~ i BP Amixu Vcnical IT~'DI Rcfcrencc: 69.~ G950 W 1383536 Pl;mnc > -OSA wp J: 1 OG V32 MW'D~ IFR ~ M S C rcated By: T roy lakabo sky QakatO(a !bp.co~lc: G~ 1~1.'2006 ~ turc C ~ i i Scctiun l\'S1 Rcfcrcncc: Slut - OS (O.WN.O.UOE) IOO. _ a un mum n Iculation McthuJ: M ' Mca>urcd Dcpth Rcfcrencc 69.i 69.50 3A Ertur Sysicm: I5CW Scun McthuJ: Tmv CylinJcr Nonh C~Iculation Mcthal: Minimum Cunamm W'ELL D ETAILS Ertur Surf cc Elliptical ~ Casing Num c ~N,- S ~E~-~4' NuMhin . g flashng LatituJc Longitu Jc Slu~ T ARGET DETAILS .. . 12- US Jfi10.78 -034.41 i931U2Y.77 ti97i74.80 70'I? 'i6.6'-JN IaN'24'22.SOO W 0~ N:unc TVD +Ni-S +E/-W Nonhine Hastine Shape .... SECTION DETNLS 12-0SATI 8689.50 ?R9934 SGIS3? 5934075A0 703115.00 Point 80 Poin~ 63 7U3496 07J I I. ~ ~ MD Inc Azi TVD +N/-S +E/-W DLcg TFacc VScc Tarect 12-OSA T2 SG94.50 2889.OU 6UOO.Ob . . 593~M1 I Scc ~ ~ ~ 12-OSA T3 8694.SU ?856.16 5 6312.47 59 GG48 593405p.0p 703810.00 Point 00 7U31d7A0 Poini 5934020 ~ I 6100A0 44 51 70.18 552J.28 506.9? 1586.65 0.00 OAO 1665.64 1?-OSA T4 8694511 28173 50 2780A0 U5A TS 8702 12 . G830.00 . 59339H7.31 7043?937. Puint '~ ~. ~ ? 6120.00 . 4G.I? 67.66 553734 512A4 1599.91 12A0 00 4 -49A0 -49A5 1679.83 201716 . - I2-OSAT6 R727.50 2455.00 7?76.00 5933674?I 704733.65 Point , 3 G>G037 58.82 52.17 5806.09 689.29 270436 ISY7.84 4492b4 . OAO 0.00 5097.74 12-OSA T7 8734.50 3325.98 7381.02 5933548.00 704893.00 Poiui ~ ~~ 4 10400.d8 SS.82 52.17 7794.28 SU 2917 510950 4A0 116.57 5750.14 . ' S ~ ~ 1123??6 4G IIG28 SOAU 00 50 9?.00 92 00 8?90.97 8545.64 . 290691 54l?.~S? 0.00 400 6036?5 6 7 . 11879 75 . 60 05 . 92.20 86N9.50 289934 SG183? 4.00 1.01 6?29.97 12-OSATI ~ ~ 8 . I?035.66 . 98JG 90.59 8718.99 ?895J5 5771.4G 24A0 -2.59 6374.95 93 Ga8? TO N y 12153.41 9S.1G 90.5y 8702.71 28945R SSSSA4 OU 6000 0.00 8A0 0.00 75 151 . GS)0.89 Il-OSA T2 - CA SING DETAILS H A LL 1 B U R 10 12268.9? 9U.00 94.95 96 01 8694.50 50 8694 2889.00 ?887J3 . 6013.?4 8.00 . 90.00 G603.14 TVD MD .. No Namc Sizc II I? 12?82?? 12574.01 90.110 Y0.00 . 96.01 . ~69~M1.50 2857.16 6303.42 OAO O 0.00 90 110 6870J1 6879A4 12-0SAT3 . erry Drflling 8 S ervic~ 13 12583.11 90.UU 96.SG 8694.50 2856J6 G312.47 GA . 0 72 69 G881 1 8G89.50 11879J9 7" P 7.0pp 14 I?586AI 90.17 96.56 869450 2855.53 60 28?2 631535 660JA0 6.Ob UO U . - 0.00 . 714739 ~1~Op ~ 8734.38 13835.U0 41?" 4.500 . . . . . . . . . . IS 1287G.96 90.17 HG.56 8693.61 50 8694 . 281735 6648.59 . 6.00 I70.48 7187.96 12-OSA T4 ~ . . -~ . . . . . . . . ~~ I6 . ~ 17 129?1.47 10 12985 87.54 54 87 9Z00 1110.82 . 8697'3 2807.50 671137 6A0 90.13 7244.88 I00' ~ Sian'Ditl :6100'~MD.?~23`ISTVD . . . . . . . . . . . . . . . Ix . 13018.88 . 87.54 IOO.S2 8698.69 2801.17 674452 00 6830 O.UU 7A0 OAO 903A 7274.59 7349J6 12-OSA TS . - ... ~ I I 19 13107.07 13569 75 87.51 50 87 IU7A0 139 42 S70?.i0 8733 IS 2780 00 253U 20 . 7211.59 Z00 90J4 763R.62 . . Start ir 4;1 00' : 6130'~M ~, I --- ~. 5537 4TVD~ ~- ~- ?U I , I . 13G67.71 . 87.50 . 13H.42 ri737.45 ?455 87 7?75 25 00 7276 OAO Z00 O.UO 16 85 7G77A0 7G77.45 I?-OSA T6 ~ , '2 13668.86 87.51 139.50 94 8727.SU 872Si3tS 2455AU 2439 1~ . 7?259.20 7.U0 . 86.63 76R5.27 ~ ~ . ~ , . , ~ . ~ . ~. - . . ~ ~~. ~ ~~ 3 ~ ~ 1a 136it9.51 13835.3G lf7.60 87.60 140. 140.94 8734.50 . 23?5.98 738 L02 U.00 OAO 773R.84 12-OSA T7 5501 I ' i i FORMATION TOP DETAILS I 8nd Dir : 65603 7' MD. TV SWA9 D , ' . . . . . . . . . . . . . . . . . . . ~ _ UGI ; .~ . . . .. . i . 4ri' M ' 7 7942ri'TWD No TVDPath MDPath Fomiation - : 104W. pir4/I W . ~ . . . ' ~ . , . - ~ ' ~ , . b~Q ~ . . . . . . . . . . . . ~ - - - ~ Eud Dir :~I 123 .216' MD. 82yQ TWD. 97' ~ ~ I I ~' 1 5629.50 62~7.66 UGI t \ I ~ ' ' 64'7 5 VD ~' j I ' 2 6167.50 - 72?8.43 WS2 G Q _. I ~! , ~ ~ ~ i i ~ I -- ` ~ -_. - - ''~' S~an I I ir 4 : l 162 ;100 MD 8.4K . 54 . f I 3 643750 7779.91 WSI ` _ ~ ' ' x '7VD ~' ~ ! 4 669450 8276 30 CM3 _ ' , i . S art Dir 2~1.!lOD : I[879.7 5 68 D. 9.5 i j 7214.50 9?80.66 CM2 ` , I I ... ~~I i , . i I . 6 R009.~0 10783.15 CMI ~ ' d Dir : I E 66' ?U38 M 8718. ~' TVD ~ 7 8300.50 11247.09 THRZ bc,UU ~~3 ~ ~ n . . 8 A4R450 1153334 BHFtZ t- __.. ~ ~ - -. .. I ~ St tt D x;100 r . , ~ . . . . U w x TVD ~ ~ I 9 , . , ASlNI ~' I~ I I - I I I c n J ' ,~ ' ,~'n Np 4a i I I o H~Ky i0 I 1879.75 TSGR ~ ~ COMPANY DETAIL$ REPERENCEINFORMATION gp q~~»~ ~-orJinat~• W;E) Rcfcr<ncc: Wcll Ccnim: 12-Oi, True Nunh ~ \'enical 1~'D) Rcfrmncc: (95 (+Y.50 Calcula~ion Mo~huJ: Minimum Curvawrc Scctiun (VS) Rcibrcncc: Slot - 0? (O.lri1N,UA0E) ErturSysicm: ItiCR'5A McusurcdDcpihRcfcrcncc: GY.S (9.iU $can MclhuJ: -I~mc Cylindcr Nunh Calcula~iun Methud: Minimum Curcuturc Ertur Sur(acc. Elliplical ~ C:uing W'arning Mcthai: Rulcs Bascd SECTION DETAILS Scc MD hu Azi TVD +N/-S +E/-W DLcg TFacc VSec Turgc~ 1 6100.00 44.51 70.18 5523.28 506.92 1586.65 0.110 0.00 1665.64 2 G120.00 d6.1? 67.6G 5537.34 512.04 1599.91 12.00 -d9.00 1679.83 3 65603~ 58.82 52.17 SSU6.09 689.?9 1897.84 4.00 -49A5 ?017.?6 4 10-0U0.48 i8.8? 52.17 7794.?8 27043G 4~92.64 OAO OAO 5097J4 5 II?3326 50.00 92A0 829Q.y7 3917.511 5109.SU 4.110 I16.57 5750.14 6 IIG28.46 50.00 9?.UO 8545.G4 39UG.91 5412.8? O.UO OAO G03625 7 IIR79.75 60.05 9?.20 8G89.50 28IH.34 5618.3? 4.U0 1.01 6229.97 I?-OSATI iS I?Ullt.6G 98.16 90.59 871it.99 2895.75 5771A6 ?4A0 -2.59 6374.95 9 I?1i3.41 9i3.16 90.59 8702.71 2894.SM Sift3~.04 0.(10 OAO 6iki2.93 10 12?G8.9? 90.U0 94.95 8694.50 2889.OU 600400 8.00 151.75 6590.H9 1?-USA T2 II 12382.?2 9U.011 96.01 8694.50 3587.73 6013.24 8.00 90.00 6G03.14 12 12574.U1 9U.OU 9G.01 8694.50 2857.16 6303.4? OAO OAO 6870J1 13 12583.I1 90.00 9G.56 8694.50 2856.16 G312.47 G.00 90.00 6579.04 12-USA T3 14 I?SN6.01 90.17 96.56 8(,94.SU 2855.83 G315.35 G.OU -0.72 688L(,9 IS 12876.96 90.17 96.56 8693.61 2822.6U G60d.40 OAO UAO 714739 IG 129?1.47 87.53 97A0 8694.50 281735 6648.59 6.00 U0.~18 7187.96 12-OSAT4 17 12985J0 87.54 100.82 8697?3 2807.io G71137 GAO 90.13 7244.88 IS 13018.riS 8754 100.82 8698.69 2801.17 G7~14.5? 0.00 U.00 727459 19 13107A7 87.51 107.00 8702.50 27R0.00 6830A0 7.00 9038 7idy.7G 12-USA TS 20 13569J5 87.50 139.42 8723.IR 2530?U 7''1159 7.00 90J4 7638.63 21 136G7.71 87.SU 139.43 8727.45 2455.87 7275?5 0.00 U.00 7677A0 ?2 13GGR.86 87.51 139.50 872750 2455A0 7276.00 7A0 85J6 7677.45 12-OSAT6 23 13G8951 87.6U 14U.94 872838 '_439.14 7'8920 7.00 8G.63 768~17 ?4 1383536 87.60 140.94 8734.SU 23?5.y8 7351.02 O.OU 0.00 7738.84 l2-OSA T7 o HALLIBURTON + Sperry O~illing Servics~ 0 ~ 3300 ~ .~. i li~ - 'o v: SURVEY PRO(.iRAM Dcpih Fm Dcp~h Tu Sun~cy~ Pl~n Tiwl plan: l2-OiA wpUb (12-0SPIan l2-OSAI ( I W.UO 13%3536 Planncd: I?-OSA wp0( V32 M W'D ~ IFR ~ MS Crcatcd By: Troy JakabwAy QakatU(a:bp.cuB~Jtc: 6/ 14i2006 W"ELL DETAILS Namr ~N,-ti ~E~-N' Nunhing Easting LatiwJc Longi~uJc Sbt . . . . . . . 12-U~ -161U.iN -J3~l.Jl i931U39J7 697i74.%0 70'I?'iG.G24N 14tl'_'d22.~00W OS ~ ~ ~~, ' TARGET DETAILS Name TVD +N/-S +Er=W Northing Easiing Shapc i ~ . 12-0SATI 8689.iU ?89934 SG183'_ ~934075.00 7031IS.U0 Point . ~ _. 13-OSA Fauli I 8689.50 2539.50 4334.4U i93368'_AO 70184L00 Polygon 12-OSA Faull2 8689.SU 4092.59 49773U 593525 LUO 70?443.00 Polygon ~ I?-O~A T? 8694.5U 2889A0 600U.00 5934U74.G4 703496.80 Point ~ ~~~, ~ 12-OSA T3 SG94.iU 2R56.16 6312.47 5934050A0 703810.00 Puint .~-. ' I'_-OSAT4 869-1.50 ?81735 6(,48.59 59340?0.00 704147A0 Puini . I'_-USA TS 870?.50 3780.00 G830.OU 5933987.41 704329.32 Poinl ~, ~ IZ-Oi.4 Poly 8704.511 2798.82 54d5.(~2 5933970A0 703945.00 Polygon ~ I?-OSA TG 8727.50 ?455.pp 7276A0 ~933fi74.?I 704783.G5 Point ~~- ~~ CASING DETAILS FORMATION TOP DETNLS . .. No. TVD MD Namc Siz~~ Nu. TVDPaU~ MDPaih Fumiation I 86S9.SU I1879J5 7" 7.UOU I 5629.50 6?57.66 UGI ! ~ _ 8734.48 13835.00 4 V2" 4.500 2 6167.50 7258.42 WS2 ' . .. ' ; 3 6437.50 7779.91 WSI ~ ~ ' ~ ~ '~ , i ~ , ~ 4 6694.50 8?76.30 CM3 - . ~. , ~. . . . . ~, . '' ~ ' I 5 7214.50 9280.66 GM2 StarcDir41U0':116'!8.46'MD8j45 4I~TVD ~. .. , ~~ (~ R009S0 10783.15 CMI 7 8300.50 11247.09 THRZ 9tait Dir 41I W' : I Ix79J5' M11D. 8 9.5'TVD ... ' I x 8484.50 I 1533.34 BHRZ . . . ~ '~ 9 8531.50 I1606A6 LCU ,,,i, ~ ~ End Dir : 12038.66' MD. 8718.'~' VD. . . . , . : ! ~- _ 10 SG89.SU I 1879.75 TSGR ~ ~ lIUO 220U 3300 44U0 5500 GG00 Wcst(-)/Easq+) [11001'vin] 770U 8800 9900 IIU00 ~ ~ Sperry-Sun BP Planning Report Company: BP Amoco Date: 6/14/2006 Time: 17:27:10 Page: 1 Field: Prudhoe Bay Co-ordinate(NE) Reference: W ell: 12-05, True NoRh Site: PB DS 12 Vertical (TVD) Reference: 69.5 69.5 ll: 12-05 W Section (VS) Reference: Well (O.OON,O.OOE,72:51Azi) e Welipath: Plan 12-05A Survey Calculation Method: Minimum Curvature Db: Oracle Plan: 12-05A wp06 Date Composed: 11/26/2003 Version: 32 Principal: Yes Tied-to: From: Definitive Path Field: Prudhce Bay North Slope UNITED STATES Map System: US State Plane Coordinate System 1927 Map Zone: Alaska, Zone 4 Geo Datum: NAD27 (Clarke 1866) Coordinate System: Well Centre Sys Datum: Mean Sea Level Geomagnetic Model: bggm2005 Site: PB DS 12 TR-10-15 UNITED STATES : North Sl ope Site Position: Northing: 5932650.90 ft Latitude: 70 13 12.462 N From: Map Easring: 697966.79 ft Longitude: 148 24 9.888 W Position Uncertainty: 0.00 ft North Reference: True 50 deg 1 Ground Level: 0.00 ft Grid Convergence: . WeII: 12-05 Slot Name: 05 12-05 Well Position: +N/-S -1610.38 ft Northing: 5931029.77 ft Latitude: 70 12 56.624 N +E/-W -434.41 ft Easting : 697574.80 ft Longitude: 148 24 22.500 W PosiNon Uncertainty: 0.00 ft Casing Points MD TVD Diameter Hole Size Name ft ft in in 11879.75 8689.50 7.000 8.500 7" 13835.00 8734.48 4.500 6.125 4112" FormaHons MD TVD Formations Lithology Dip Angle d Dip Direction de ft ft eg g 0.00 0.00 0.00 SV4 0.00 0.00 0.00 SV1 0.00 0.00 0.00 UG4 0.00 0.00 0.00 UG3 0.00 0.00 6257.66 5629.50 UG1 0.00 0.00 7258.42 6167.50 WS2 0.00 0.00 7779.91 6437.50 W S 1 0.00 0.00 8276.30 6694.50 CM3 0.00 0.00 9280.66 7214.50 CM2 0.00 0.00 10783.15 8009.50 CM1 0.00 0.00 11247.09 8300.50 THRZ 00 0 0.00 11533.34 8484.50 BHRZ . 0.00 0.00 11606.46 8531.50 LCU 0.00 0.00 11879.75 8689.50 TSGR Targets Map Map <-- Latitude ---> <- Longitude -> Name Description TVD +N/-S +E/-W Northing Easting Deg Min Sec Deg Min Sec Dip. Dir. ft ft ft ft ft 12-05A T1 8689.50 2899.34 5618.32 5934075.00 703115.00 70 13 25.118 N 148 21 39.316 W 12-05A T2 8694.50 2889.00 6000.00 5934074.64 703496.80 70 13 25.013 N 148 21 28.230 W 12-05A T3 8694.50 2856.16 6312.47 5934050.00 703810.00 70 13 24.688 N 148 21 19.156 W 12-05A T4 8694.50 2817.35 6648.59 5934020.00 704147.00 70 13 24.303 N 148 21 9.394 W 12-05A T5 8702.50 2780.00 6830.00 5933987.41 704329.32 70 13 23.935 N 148 21 4.126 W 12-05A T6 8727.50 2455.00 7276.00 5933674.21 704783.65 70 13 20.734 N 148 20 51.181 W -__J Sperry-Sun BP Planning Report ~ Company: BP Amoco Date: 6/14/2006 Time: 17:27`.10 Page: 2 Field: Prudhoe Bay Co-ordinate(NE) Refereuce: W ell: 12-05, True North Site: PB DS 12 Vertical (TVD) Reference: 69 .5 69.5 Well: 12-05 Section (VS) Reference: Well (O.OON,O.OOE,72.51Azi) Wellpath• Plan 12-05A Survey CalculaHon Method: Minimum Curvature Db; OraGe Targets Map Map <-- LaHtude --> <- Longitude -> Name Description TVD +N/-S +E/-W Northing Easting Deg Min Ser Deg Min Sec Dip. Dir. ft ft ft ft ft 12-05A T7 8734.50 2325.98 7381.02 5933548.00 704892.00 70 13 19.464 N 148 20 48.135 W Plan Section Information MD Incl Azim TVD +N/-S +E/-W DLS Build Tum TFO Target ft deg deg ft ft ft deg/100ft deg/100ft deg/100ft deg 6100.00 44.51 70.18 5523.28 506.92 1586.65 0.00 0.00 0.00 0.00 6120.00 46.12 67.66 5537.34 512.04 1599.91 12.00 8.01 -12.57 -49.00 6560.37 58.82 52.17 5806.09 689.29 1897.84 4.00 2.88 -3.52 -49.05 10400.48 58.82 5Z.17 7794.28 2704.36 4492.64 0.00 0.00 0.00 0.00 11232.26 50.00 92.00 8290.97 2917.50 5109.50 4.00 -1.06 4.79 116.57 11628.46 50.00 92.00 8545.64 2906.91 5412.82 0.00 -1.06 4.79 0.00 11879.75 60.05 92.20 8689.50 2899.34 5618.32 4.00 4.00 0.08 1.01 12-05A T1 12038.66 98.16 90.59 8718.99 2895.75 5771.46 24.00 23.98 -1.02 -2.59 12153.41 98.16 90.59 8702.71 2894.58 5885.04 0.00 0.00 0.00 0.00 12268.92 90.00 94.95 8694.50 2889.00 6000.00 8.00 -7.06 3.77 151.75 12-05A T2 12282.22 90.00 96.01 8694.50 2887.73 6013.24 8.00 0.00 8.00 90.00 12574.01 90.00 96.01 8694.50 2857.16 6303.42 0.00 0.00 0.00 0.00 12583.11 90.00 96.56 8694.50 2856.16 6312.47 6.00 0.00 6.00 90.00 12-05A T3 12586.01 90.17 96.56 8694.50 2855.83 6315.35 6.00 6.00 -0.08 -0.72 12876.96 90.17 96.56 8693.61 2822.60 6604.40 0.00 0.00 0.00 0.00 12921.47 87.54 97.00 8694.50 2817.35 6648.59 6.00 -5.92 0.99 170.48 12-05A T4 12985.10 87.54 100.82 8697.23 2807.50 6711.37 6.00 -0.01 6.01 90.13 13018.88 87.54 100.82 8698.69 2801.17 6744.52 0.00 0.00 0.00 0.00 13107.07 87.51 107.00 8702.50 2780.00 6830.00 7.00 -0.03 7.01 90.38 12-05A T5 13569.75 87.50 139.42 8723.18 2530.20 7211.59 7.00 0.00 7.01 90.74 13667.71 87.50 139.42 8727.45 2455.87 7275.25 0.00 0.00 0.00 0.00 13668.86 87.51 139.50 8727.50 2455.00 7276.00 7.00 0.59 6.97 85.16 12-05A T6 13689.51 87.60 140.94 8728.38 2439.14 7289.20 7.00 0.42 6.99 86.63 13835.36 87.60 140.94 5734.50 2325.98 7381.02 0.00 0.00 0.00 0.00 12-05A T7 Survey MD Incl Azim TVD Sys TVD VS N/S E/W DLS MapN MapE TooUCo ft deg deg ft ft ft ft ft deg/100ft ft ft 6100 00 44.51 70.18 5523.28 5453.78 1665.64 506.92 1586.65 0.00 5931578.02 699147.54 Start Dir 1 ( . 00 6120 46.12 67.66 5537.34 5467.84 1679.83 512.04 1599.91 12.00 5931583.48 699160.67 Start Dir 4/ ( . 6200 00 48.26 64.42 5591.71 5522.21 1738.13 535.89 1653.51 4.00 5931608.72 699213.63 MWD+IFR . 6257 66 49 86 62.22 5629.50 5560.00 1781.12 555.45 1692.43 4.00 5931629.29 699252.01 UG1 . 6300.00 . 51.06 60.67 5656.45 5586.95 1813.16 571.06 1721.10 4.00 5931645.64 699280.26 MWD+IFR 6400 00 53.97 57.21 5717.32 5647.82 1890.25 612.02 1789.02 4.00 5931688.37 699347.09 MWD+IFR . 00 6500 56.97 54.00 5774.01 5704.51 1969.04 658.57 1856.96 4.00 5931736.68 699413.78 MWD+IFR . 37 6560 58.82 52.17 5806.09 5736.59 2017.26 689.29 1897.84 4.00 5931768.46 699453.84 End Dir : . 00 6600 58.82 52.17 5826.61 5757.11 2049.05 710.09 1924.61 0.00 5931789.94 699480.06 MWD+IFR . 6700.00 58.82 52.17 5878.38 5808.88 2129.26 762.56 1992.18 0.00 5931844.17 699546.23 MWD+IFR 6800 00 58.82 52.17 5930.16 5860.66 2209.48 815.04 2059.75 0.00 5931898.39 699612.40 MWD+IFR . 00 6900 58.82 52.17 5981.93 5912.43 2289.70 867.51 2127.32 0.00 5931952.61 699678.57 MWD+IFR . 7000.00 58.82 52.17 6033.71 5964.2T 2369.92 999.98 2194.90 0.00 5932006.83 699744.74 MWD+IFR 7100 00 58.82 52.17 6085.48 6015.98 2450.14 972.46 2262.47 0.00 5932061.05 699810.91 MWD+IFR . 7200.00 58.82 52.17 6137.26 6067.76 2530.36 1024.93 2330.04 0.00 5932115.27 699877.08 MWD+IFR 42 7258 58.82 52.17 6167.50 6098.00 2577.22 1055.59 2369.51 0.00 5932146.95 699915.74 WS2 . 7300 00 58.82 52.17 6189.03 6119.53 2610.58 1077.41 2397.61 0.00 5932169.50 699943.25 MWD+IFR . 7400 00 82 58 52.17 6240.80 6171.30 2690.80 1129.88 2465.18 0.00 5932223.72 700009.43 MWD+IFR . 7500 00 . 58.82 52.17 6292.58 6223.08 2771.01 1182.36 2532.75 0.00 5932277.94 700075.60 MWD+IFR . 7600.00 58.82 52.17 6344.35 6274.85 2851.23 1234.83 2600.32 0.00 5932332.16 700141.77 MWD+IFR 7700.00 58.82 52.17 6396.13 6326.63 2931.45 1287.30 2667.90 0.00 5932386.38 700207.94 MWD+IFR 91 7779 58.82 52.17 6437.50 6368.00 2995.56 1329.24 2721.89 0.00 5932429.71 700260.82 WS1 . 7800.00 58.82 52.17 6447.90 6378.40 3011.67 1339.78 2735.47 0.00 5932440.61 700274.11 MWD+IFR ient ~ ~ Sperry-Sun BP Planning Report Company: BP Amoco Date: 6/14/2006 Time: 17:27:10 P$ge~ 3 Field: Prudhce Bay Co-ordinate(NE) Reference: W ell: 12-05, True North Site: PB DS 12 Verlical (TVD) Reference: 69.5 69.5 Well: 12-05 Section (VS) Reference: Well (O.OON,O.OOE,72.51Azi) Wellpath: Plan 12-05A Survey Calculation Method: Minimum Curvature Db; Oracle Survey MD Incl Azim TVD Sys TVD VS N/S E/W DLS MapN MapE TooUCo ent ft deg deg ft ft ft ft ft deg/100ft ft ft 7900.00 58.82 52.17 6499.67 6430.17 3091.89 1392.25 2803.04 0.00 5932494.83 700340.28 MWD+IFR S 8000.00 58.82 52.17 6551.45 6481.95 3172.11 1444.73 2870.61 0.00 5932549.05 700406.45 MWD+IFR S 8100.00 58.82 52.17 6603.22 6533.72 3252.33 1497.20 2938.18 0.00 5932603.27 700472.62 MWD+IFR S 8200.00 58.82 52.17 6655.00 6585.50 3332.55 1549.67 3005.75 0.00 5932657.49 700538.79 MWD+IFR S 8276.30 58.82 52.17 6694.50 6625.00 3393.75 1589.71 3057.31 0.00 5932698.86 700589.28 CM3 8300.00 58.82 52.17 6706.77 6637.27 3412.76 1602.15 3073.32 0.00 5932711.71 700604.97 MWD+IFR S 8400.00 58.82 52.17 6758.55 6689.05 3492.98 1654.62 3140.89 0.00 5932765.94 700671.14 MWD+IFR S 8500.00 58.82 52.17 6810.32 6740.82 3573.20 1707.10 3208.47 0.00 5932820.16 700737.31 MWD+IFR S 8600.00 58.82 52.17 6862.09 6792.59 3653.42 1759.57 3276.04 0.00 5932874.38 700803.48 MWD+IFR S 8700.00 58.82 52.17 6913.87 6844.37 3733.64 1812.05 3343.61 0.00 5932928.60 700869.65 MWD+IFR S 8800.00 58.82 52.17 6965.64 6896.14 3813.86 1864.52 3411.18 0.00 5932982.82 700935.82 MWD+IFR S 8900.00 58.82 52.17 7017.42 6947.92 3894.08 1916.99 3478.75 0.00 5933037.04 701001.99 MWD+IFR S 9000.00 58.82 52.17 7069.19 6999.69 3974.29 1969.47 3546.32 0.00 5933091.27 701068.16 MWD+IFR S 9100.00 55.82 52.17 7120.97 7051.47 4054.51 2021.94 3613.89 0.00 5933145.49 701134.33 MWD+IFR S 9200.00 58.82 52.17 7172.74 7103.24 4134.73 2074.42 3681.47 0.00 5933199.71 701200.51 MWD+IFf2 S 9280.66 58.82 52.17 7214.50 7145.00 4199.43 2116.74 3735.97 0.00 5933243.44 701253.88 CM2 9300.00 58.82 52.17 7224.51 7155.01 4214.95 2126.89 3749.04 0.00 5933253.93 701266.68 MWD+IFR S 9400.00 58.82 52.17 7276.29 7206.79 4295.17 2179.37 3816.61 0.00 5933308.15 701332.85 MWD+IFR S 9500.00 58.82 52.17 7328.06 7258.56 4375.39 2231.84 3884.18 0.00 5933362.37 701399.02 MWD+IFR S 9600.00 58.82 52.17 7379.84 7310.34 4455.61 2284.31 3951.75 0.00 5933416.60 701465.19 MWD+IFR S 9700.00 58.82 52.17 7431.61 7362.11 4535.83 2336.79 4019.32 0.00 5933470.82 701531.36 MWD+IFR S 9800.00 58.82 52.17 7483.39 7413.89 4616.04 2389.26 4086.89 0.00 5933525.04 701597.53 MWD+IFR S 9900.00 58.82 52.17 7535.16 7465.66 4696.26 2441.74 4154.46 0.00 5933579.26 701663.70 MWD+IFR S 10000.00 58.82 52.17 7586.93 7517.43 4776.48 2494.21 4222.04 0.00 5933633.48 701729.87 MWD+IFR S 10100.00 58.82 52.17 7638.71 7569.21 4856.70 2546.69 4289.61 0.00 5933687.71 701796.05 MWD+IFR S 10200.00 58.82 52.17 7690.48 7620.98 4936.92 2599.16 4357.18 0.00 5933741.93 701862.22 MWD+IFR S 10300.00 58.82 52.17 774226 7672.76 5017.14 2651.63 4424.75 0.00 5933796.15 701928.39 MWD+IFR S 10400.00 58.82 52.17 7794.03 7724.53 5097.36 2704.11 4492.32 0.00 5933850.37 701994.56 MWD+IFR S 10400.48 58.82 52.17 7794.28 7724.78 5097.74 2704.36 4492.65 0.00 5933850.63 701994.88 Start Dir 4/ 0 10500.00 57.11 56.41 7847.09 7777.59 5177.83 2753.61 4561.10 4.00 5933901.65 702062.02 MWD+IFR S 10600.00 55.54 60.83 7902.55 7833.05 5258.58 2796.95 4632.10 4.00 5933946.83 702131.85 MWD+IFR S 10700.00 54.13 65.41 7960.16 7890.66 5339.19 2833.91 4704.97 4.00 5933985.69 702203.73 MWD+IFR S 10783.15 53.10 69.34 8009.50 7940.00 5405.84 2859.67 4766.74 4.00 5934013.05 702264.80 CM1 10800.00 52.91 70.15 8019.64 7950.14 5419.28 2864.33 4779.36 4.00 5934018.04 702277.29 MWD+IFR S 10900.00 51.88 75.03 8080.68 8011.18 5498.46 2888.04 4854.91 4.00 5934043.72 702352.19 MWD+IFR S 11000.00 51.06 80.03 8143.00 8073.50 5576.34 2904.94 4931.24 4.00 5934062.61 702428.05 MWD+IFR S 11100.00 50.45 85.14 8206.29 8136.79 5652.55 2914.95 5007.99 4.00 5934074.62 702504.50 MWD+IFR S 11200.00 50.07 90.32 8270.25 8200.75 5726.71 2918.00 5084.78 4.00 5934079.68 702581.18 MWD+IFR S 11232.26 50.00 92.00 8290.97 8221.47 5750.14 2917.50 5109.50 4.00 5934079.83 702605.91 End Dir : 11 3 11247.09 50.00 92.00 8300.50 8231.00 5760.84 2917.10 5120.85 0.00 5934079.73 702617.26 THRZ 11300.00 50.00 92.00 8334.51 8265.01 5799.05 2915.69 5161.36 0.00 5934079.38 702657.79 MWD+IFR S 11400.00 50.00 92.00 8398.79 8329.29 587126 2913.02 5237.91 0.00 5934078.71 702734.39 MWD+IFR S 11500.00 50.00 92.00 8463.07 8393.57 5943.48 2910.34 5314.47 0.00 5934078.04 702810.98 MWD+IFR S 11533.34 50.00 92.00 8484.50 8415.00 5967.56 2909.45 5340.00 0.00 5934077.82 702836.52 BHRZ 11600.00 50.00 92.00 8527.35 8457.85 6015.69 2907.67 5391.03 0.00 5934077.37 702887.58 MWD+IFR S 11606.46 50.00 92.00 8531.50 8462.00 6020.36 2907.50 5395.98 0.00 5934077.33 702892.53 LCU 11628.46 50.00 92.00 8545.64 8476.14 6036.25 2906.91 5412.82 0.00 5934077.18 702909.38 Start Dir 4/ 0 11700.00 52.86 92.06 8590.24 8520.74 6088.96 2904.92 5468.71 4.00 5934076.66 702965.30 MWD+IFR S 11800.00 56.86 92.14 8647.78 8578.28 6165.98 2901.92 5550.41 4.00 5934075.80 703047.05 MWD+IFR S 11879.75 60.05 92.20 8689.50 8620.00 6229.97 2899.34 5618.32 4.00 5934075.00 703115.00 12-05A T1 11900.00 64.91 91.96 8698.86 8629.36 6246.89 2898.69 5636.26 24.00 5934074.82 703132.95 MWD+IFR S 12000.00 88.89 90.96 8721.36 8651.86 6338.35 2896.27 5732.92 24.00 5934074.93 703229.63 MWD+IFR S ~ Sperry-Sun BP Planning Report ~ Company: BP Amoco Date: 6/14/2006 Time: 17:27:10 Page: 4 Field: Prudhoe Bay Co-ordinate(N E) Reference: Well: 12-05, True North Site: PB DS 12 Vertical (TVD) Reference: 69. 5 69.5 Well• 12-05 Section (VS) Reference: Well (O.OON,O.OOE,72 .51Azi) Wellpath: Plan 12-05A Survey CalculaHon Method: Minimum Curvature Db: Oracle Survey MD Incl Azim TVD Sys 1'VD VS N/S E/W DI.S MapN MapE Tool/Co ft deg deg ft ft ft ft ft deg/100ft ft ft 12038. 66 98.16 90.59 8718.99 8649.49 6374.95 2895.75 5771.46 24.00 5934075.42 703268.17 End Dir : 1 : 12100. 00 98.16 90.59 8710.29 8640.79 6432.67 2895.13 5832.18 0.00 5934076.38 703328.88 MWD+IFR 12153. 41 98.16 90.59 8702.71 8633.21 6482.93 2894.58 5885.04 0.00 5934077.22 703381.74 Start Dir 8/ C 12200. 00 94.87 92.36 8697.43 8627.93 6526.70 2893.39 5931.31 8.00 593407724 703428.02 MWD+IFR 12268. 92 90.00 94.95 8694.50 8625.00 6590.89 2889.00 6000.00 8.00 5934074.64 703496.80 12-05A T2 12282. 22 90.00 96.01 8694.50 8625.00 6603.14 2887.73 6013.24 8.00 5934073.72 703510.06 End Dir : 1 ~ 12300. 00 90.00 96.01 8694.50 8625.00 6619.44 2885.86 6030.92 0.00 5934072.32 703527.79 MWD+IFR 12400. 00 90.00 96.01 8694.50 8625.00 6711.15 2875.39 6130.37 0.00 5934064.45 703627.47 MWD+IFR 12500. 00 90.00 96.01 8694.50 8625.00 6802.85 2864.91 6229.82 0.00 5934056.58 703727.16 MWD+IFR 12574. 01 90.00 96.01 8694.50 8625.00 6870.71 2857.16 6303.42 0.00 5934050.76 703800.93 Start Dir 6/ ( 12583. 11 90.00 96.56 8694.50 8625.00 6879.04 2856.16 6312.47 6.00 5934050.00 703810.00 12-05A T3 12586. 01 90.17 96.56 8694.50 8625.00 6881.69 2855.83 6315.35 6.00 5934049.74 703812.89 End Dir : 1 12600. 00 90.17 96.56 8694.45 8624.95 6894.47 2854.23 6329.25 0.00 5934048.51 703826.82 MWD+IFR 12700. 00 90.17 96.56 8694.15 8624.65 6985.79 2842.81 6428.59 0.00 5934039.69 703926.43 MWD+IFR 12800. 00 90.17 96.56 8693.85 8624.35 7077.11 2831.39 6527.94 0.00 5934030.88 704026.03 MWD+IFR 12876. 96 90.17 96.56 8693.61 8624.11 7147.39 2822.60 6604.40 0.00 5934024.09 704102.69 Start Oir 6/ ( 12900. 00 88.81 96.79 8693.82 8624.32 7168.41 2819.92 6627.28 6.00 5934022.01 704125.63 MWD+IFR 12921. 47 87.54 97.00 8694.50 8625.00 7187.96 2817.35 6648.59 6.00 5934020.00 704147.00 12-05A T4 12985. 10 87.54 100.82 8697.23 8627.73 7244.88 2807.50 6711.37 6.00 5934011.80 704210.02 End Dir : 1 13000 .00 87.54 100.82 8697.87 8628.37 7257.99 2804.71 6725.99 0.00 5934009.39 704224.71 MWD+IFR 13018 .88 87.54 100.82 8698.69 8629.19 7274.59 2801.17 6744.52 0.00 5934006.33 704243.32 Start Dir 7/ ( 13100 .00 87.51 106.50 8702.19 8632.69 7343.92 2782.03 6823.24 7.00 5933989.27 704322.51 MWD+IFR 13107 .07 87.51 107.00 8702.50 8633.00 7349.76 2780.00 6830.00 7.00 5933987.41 704329.32 12-05A T5 13200 .00 87.44 113.51 8706.60 8637.10 7423.13 2747.87 6917.05 7.00 5933957.57 704417.18 MWD+IFR 13300 .00 87.41 120.52 8711.10 8641.60 7494.33 2702.52 7006.00 7.00 5933914.57 704507.28 MWD+IFR 13400 .00 87.41 127.53 8715.62 8646.12 7556.46 2646.66 7088.74 7.00 5933860.90 704591.45 MWD+IFR 13500 .00 87.45 134.53 8720.11 8650.61 7608.60 2581.13 7164.06 7.00 5933797.36 704668.45 MWD+IFR 13569 .75 87.50 139.42 8723.18 8653.65 7638.62 2530.20 7211.59 7.00 5933747.70 704717.30 End Dir : 1 13600 .00 87.50 139.42 8724.50 8655.00 7650.47 2507.25 7231.25 0.00 5933725.27 704737.55 MWD+IFR 13667 .71 87.50 139.42 8727.45 8657.95 7677.00 2455.87 7275.25 0.00 5933675.06 704782.88 Start Dir 7/ I 13668 .86 87.51 139.50 8727.50 8658.00 7677.45 2455.00 7276.00 6.99 5933674.21 704783.65 12-05A T6 13689 .51 87.60 140.94 8728.38 8658.88 7685.27 2439.14 7289.20 7.00 5933658.71 704797.25 End Dir : 1 13700 .00 87.60 140.94 8728.82 8659.32 7689.13 2431.00 7295.80 0.00 5933650.74 704804.07 MWD+IFR 13800 .00 87.60 140.94 8733.02 8663.52 7725.85 2353.42 7358.76 0.00 5933574.84 704869.03 MWD+IFR 13835 .00 87.60 140.94 8734.48 8664.98 7738.70 2326.26 7380.79 0.00 593354827 704891.76 41/2" 13835 .36 87.60 140.94 8734.50 8665.00 7738.84 2325.98 7381.02 0.00 5933548.00 704892.00 12-05A T7 ent ~ ~ ~ TR~= GRAY GBV 2 W~LHEAD = GRAY ACTUATOR = AX~SON KB. ELEV = 73' BF. E1EV = KOP = 3300' Max Angle = 45 @ 5300' Datum MD = 10382' I~atumND = 8800' SS ~ 13-3/8" CSG, 72#, N-80, ID = 12.347" ~ 2727~ Minimum ID = 3.725" @ 10125' 4-1/2" OTIS XN NO-GO NIPPLE 5-1/2" TBG-PC, 17#, L-80, .0232 bpf, ID = 4.892" --~ 6360' TOP OF 4-1/2" TBG-PC 6360~ TOP OF 7-5/8" LNR 6422~ ~ 4-1/2" TBG-PC, 12.6#, L-80, .0152 bpf, ID = 3.958" ~-~ 10137~ PERFORATION SUMMARY REF LOG: BHCS ON 11/16/79 ANGLE AT TOP PERF: 29 @ 10250' Note: Refer to Production DB for historical perf data SIZE SPF IMFRVAL Opn/Sqz DATE ~ SEE PAGE 2 FOR PERFORATION DATA ~ _- 12-05 ~ SAFETY NOTES: GASLIFT VALVES CANNOT BE PULL~. 22$$' ~--~ 5-1l2" CAM BAL-O SSSV NIP, ID = 4.562" [;AG 1 IFf MANDRELS ST MD ND DEV TYPE VLV LATCH PORT DATE 1 3079 3076 8 ~ 2 5418 5034 39 RK 3 6251 5631 39 RK 4 7078 6223 36 BK-2 5 7615 6616 37 BK-2 6 8154 7023 35 BK-2 7 8695 7453 34 BK-2 8 9079 7762 31 BK-2 9 9427 8049 23 BK-2 10 9772 8342 20 BK-2 11 9921 8471 19 BK-2 6360' S-1/2" X 4-1/2" XO 10009~ -{4-1/2"BAKERPBRASSY ~ 10030~ 7-5/8" X 4-1/2" BAKER SAB PKR 10034~ 5-1/2" BAKER MILLOUT IXT~ 10040~ 5-1/2" X 4-1/2" XO 10125~ 4-1/2" OTIS XN NO-GO NIP, ID = 3.725" 10125~ 4-1/2" XN PLUG (03/01/03) 10137' 4-1/2" BAKER SHEAROUT SUB 10132~ ELMD TT LOGGm 12/28/90 10363~ ~-~ FISH - 20" SAMPLE BAILER (12/91) ~~ --L 10884, 7-5/8" LNR, 29.7#, L-80, .0459 bpf, ID = 6.875" 10970~ 9-5/8" CSG, 47#, S-95, ID = 8.681" ~ 11086~ ~ 11120' DATE REV BY COMMBVTS DATE REV BY COMMENTS 11/24/79 ORIGINAL COMPLEfiON 02/27/03 DCR/KK CARRECTIONS 12/13/90 LAST WORKOVER 03/01/03 JBNVKK SETXNPLUG 12/12/00 SIS-SLT CONVERTm TO CANVAS 02/27/01 SIS-MD FINAL 01l02/02 RrUTP CARRECTIONS PRUDHOE BAY UNff W~L: 12-05 ~ PERMIT No: 1790550 ' AF~ No: 50-029-20391-00 SEC 17, T10N, R15E, 817.45' FEL & 3358.43' FNL ~e~ r'"~~___a.~~ /w1....L..l .~ _' ~ • TREE = GRAY GEN 2 WELLHEAD = GRAY ACTUATOR= AXELSON KB. ElEV = 73' BF. ELEV = KOP = 3300' Max Angie = 45 @ 5300' Datum MD = 10382' Datum TV D= 8800' SS PFRFORATION SUMMARY REF LOG: BHCS ON 11/16/79 ANGLE AT TOP PERF: 29 @ 10250' Note: Refer to Production DB for historicai perf data SIZE SPF INTERVAL Opn/Sqz DATE 3-3/8" 4 10250 - 10254 O 10/19/92 3-3/8" 4 10254 - 10260 O 12/29/90 3-3/8" 4 10298 - 10312 O 10/19/92 3-3/8" 2 10362 - 10404 O 03/15/91 3-3/8" 4 10363 - 10413 S 08/12/90 3-3/8" 4 10374 - 10394 O 11 /23/91 3-3/8" 4 10416 - 10427 O 12/29/90 3-3/8" 4 10427 - 10451 O 12/29/90 ? 4 10461 - 10485 S 08/12/90 ? 4 10485 - 10508 S 08/12/90 12-05 PERFS ~ ~ ~ DATE REV BY COMMENTS DATE REV BY CAMMINTS 11/24/79 ORIGINAL CAMPLETION 02l27/03 DCRlKK CORRECTIONS 12/13/90 LAST WORKOVER 12/12/00 SIS-SLT CONVERTEDTOCANVAS 02/27/01 SIS-MD FINAL 01/02/02 RN/TP CORRECTIONS _ PRUDHOE BAY UNff WELL: 12-05 PERM(T No: 1790550 API No: 50-029-20391-00 ..~...~ Tenwi oacc 4~7 nG~ CCI R ZZ~,A d'2' FNI ~rt~ _ - ~ cnro? YVEILHEAD= GRAY/McEvoy? ACTUATOR = AXELSON? KB. ELEV = 73' BF. ELEV = KOP = 3300' Max Angle = 45 ~ 5300' Datum MD = 10382' Datum N D= 8800' SS 2200' 4-1/2" X NIP, ID = 3.813" 2727' ~-i 13-3/8" 72#, N-80, ID = 12.347 5950' 7" 26#, L-80, TGII, Tie-Back Cemt to 2900' 5950' 7" Baker liner hanger and ZXP packer w/ TBS GAS LIFf MANDRELS Baker Whipstock ~~ -6100' ~ ~ ~ 12 05A Proposed Side Track OF 7-5/8" LNR ~ 6422' . ~ 1 ~ Y • •• ~ ... s .~~.~ .F ~ . ~ ., i ~ ,:.. • , • • .s • ~ ,. ~• :~ ~' : .`, . • ° a ~ ~., PBTD 10884~~ ~ _~• _` ~ I,I ID=8.681- -, •--- I I ~~ ', ~~ 11120' ST MD TVD DEV TYPE VLV LATCH PORT DATE 5 3347 3300 KBG-2 4 5079 4750 KBG-2 3 6724 6000 KBG-2 2 8296 7200 KBG-2 1 9738 8300 KBG-2 11610' 4-1 /2" X NIP, ID = 3.813" 11625' 7" x 4-1/2" Baker S-3 9Cr 11645' 4-1/2" X NIP, ID = 3.813" 11705' 4-1/2" XN NIP, ID = 3.725" 11715' ~~4-1/2" 12.6# 13G-80 VamTOPTubing, ID=3.958" 11720' 4-1/2" WLEG 17730' 4-1/2" Baker liner hanger and ZXPpacker w/TBS 11880' ~--~ 7" LNR 26#, L-80, BTGM, ID=6.276 11730 to ~12280~ 4-1/2" LNR, 12.6#, L-80, IBT-M ~ - - - PBTD - -13830' \ TD ` - - - - - - - - MD - 13,835` TVD - 8,735' 12280 to -13835' 4-1/2"SLOTTmLNR, 12.6#, L-80, IBT-M RE: 12-OSA--heads up Tom, My appologies. The number of sacks on the permit and the detail are correct. I had oringinally looked at this with around 1000' of tail cement but after looking at the hydraulics, chose to go with 500' of tail to get the liner cemented in a single stage. I changed the number of sacks on the permit application but not the depths or the cu.ft. Attached is a one page cementing update that can be printed and inserted, and a revised, complete permit detail. Josh Sudderth Operations Drilling Engineer BP Exploration Alaska Office: 907-564-4342 Cell: 907-632-3807 -----Original Message----- From: Hobbs, Greg S (ANC} Sent: Monday, April 30, 2007 7:08 AM To: Sudderth, Josh Cc: 'Thomas Maunder' Subject: FW: 12-05A--heads up Josh- From Tom- You are talking to the king of the full mailbox here- I received both- for some reason, you bounced back- Greg -----Original Message----- From: Thomas Maunder [mailto:~o-r; ma:zrd~r~.~~ad:r;ir~_state.ak.us] __~ ................---_........._..._._._....__._..._..____._.___._____.____.___............................ Sent: Friday, April 27, 2007 2:04 PM Cc: Hobbs, Greg S (ANC) Subject: Re: 12-05A--heads up Greg, I got a bounceback from Josh, so would you forward please. Thanks, Tom Thomas Maunder wrote, On 4/2'7/2007 1:11 PM: ', Josh, ', I am reviewing the application for this well and have a question. ' 1. What is the tail volume for the 7" liner? On the 401 sheet 91 sx class G is listed, but in the cementing program detail on Page 5, 91 sx and 212 ft3 @ 1.16 yield is listed. Would you please clarify? I took a guess at your eddress, but am copying it to Greg to forward , if necessary. Thanks in advance. Call or message with any questions. 1 of2 5/1/2007 7:58 AM • . RE: 12-OSA--heads up ~ • Tom Maunder, PE AOGCC > Content-Description: 12-OSA Permit to drill Final.ZIl' 12-OSA Permit to drill Fina1.ZIP Content-Type: application/x-zip-compressed Content-Encoding: base64 2 of 2 5/1/2007 7:58 AM Alaska Department of Natural Resources Land Administration System Page 1 of 2 ~ ~ ~_ ~ E ~, ~~~ ~ ~ ~rc~~~~~~F~i~~~: 1~~~~er`~ S~~rch State Cab'sns !~~#ur~a1 ~~DUt~es ~ ~..._ _. . _, . , . iF,.w..., ~r„ ., ,.~~_. ..... ,........... .~,.~.~ ;., A~aska DN~t Case Summ~ry File Type ADL File Number: 28331 w; ~ Printable Case File_Summ. .ary See Township, Range, Section and Acreage? ~` Yes ~ No ~,~~~q;~._"~ ~ t?~ r~5~ ~~ ~" Last updated on 04/19/2007. http://www.dnr. state.ak.us/las/Case_Summary.cfin?FileType=ADL&FileNumber=028331... 4/19/2007 ~ Terri L. Hubble BP Exploration AK Inc. PO Box 198612 MB 7-5 Anchorage, AK 99519 PAY TO THE ORDER OF "Mastercard Check" First National Bank Alaska ~ Anchorage, AK 99501 MEMO '0~~~ L~ ss-silzsz 332 DATE ~~ $ ~ ~~.~ ~ ~ ~:i25200~60~:99L46227L556~~' 0332 ~ ~ TRAYSMIT'I'AL LE~'TER CH~CKLIST tiVELL ~A11~IE ~.8~ ~v?-OS~ PTD# ~O~O.S30 ~Development Service Eacpioratory Stratigoraphic Test YoQ-Conventionat Wet[ Circle 4ppropriate Letter / Par~graphs ro be Inci~d~d en Trar~smittal Lett~r ' CE~CK i ADD-ONS ; WHAT ~ (OPTI0IVS) ; APPLIES ~ TEXT FOR APPROVAL LETTER NRiLTI LATERAL ([f tast two digits in AP[ number are between 60-69) The permit is for a new wellbore segment of existing weI I Pecmit No. , ,4P[ No. 50- - _ Prod~ction shouid coatinue to be reported as a function of the original 4Pf number stated above. ~ P[LOT E[OLE i[n acc~rdac~ce with 20 AAC 25.OU~(~, a!( cecords, data and logs i ~ acquired for thc pilot hole must be clearly differsntiateci in both i ; w~ll [tarttc ( Pf~ attd API ttumber I ~ '(~~- - -~} from records, data and logs ~ a.cquired for well ~ SPACING The permit is approved subject to fi~ll compliance with 20 AAC ! EXCEPTION ~ ~ 2~.0». Approval to perforate and rodttce / iaject is contin~ertr ; ~ i ( upon issuance of a conservarion order approving a spacing i ~ exception h ' _i . assum~s t e ~ liability of any protest to the spacing exception that may occur. ( F ; DRY D1TCH ~ Al! dry ditch sample sets subrnitted to th~~ommission must be in ; i SA.tiIPLE i no greatcr than 30' sample intecvals from betow the permafrost or ;' ! I from where samptes are first caught and 10' sample intervals ; ; ~ through target zones. ~ ' j 1~ton-Conventional + P(ease note the fotlowing_ special condition of this permic: ~ ~ productioR or production testing of coal b~d methane is not allowed r '~~« ~ for Lname of wet11 until after (CO[IlDany Nam„~has designec! and ~ ~ implemented a water weli testing program to provide base(ine data I ; on water quality and quantity. (ComQanv Narne) must contact the i Commission to obtain advance approva! of such water well testing ! I ~ pcogram. 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