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210-063
7. Property Designation (Lease Number): 1. Operations Performed: 2. Operator Name: 3. Address: 4. Well Class Before Work:5. Permit to Drill Number: 6. API Number: 8. Well Name and Number: 9. Logs (List logs and submit electronic data per 20AAC25.071): 10. Field/Pool(s): Susp Well Insp Install Whipstock Mod Artificial Lift Perforate New Pool Perforate Plug Perforations Coiled Tubing Ops Other Stimulate Fracture Stimulate Alter Casing Pull Tubing Repair Well Other: Change Approved Program Operations shutdown 11. Present Well Condition Summary: Casing Length Size MD TVD Burst Collapse Exploratory Stratigraphic Development Service 14. Attachments (required per 20 AAC 25.070, 25.071, & 25.283) 16. Well Status after work: 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. OIL GAS WINJ WAG GINJ WDSPL GSTOR Suspended SPLUG Authorized Name and Digital Signature with Date: Authorized Title: Contact Name: Contact Email: Contact Phone: PBU C-28B Pull Patch Hilcorp North Slope, LLC 3800 Centerpoint Dr, Suite 1400, Anchorage, AK 99503 210-063 50-029-20867-02-00 11864 Conductor Surface Intermediate Liner Liner 9023 80 2706 8461 2012 1679 10690 20" 13-3/8" 9-5/8" 7" 4-1/2" 8588 29 - 109 28 - 2734 26 - 8487 8327 - 10339 10183 - 11862 29 - 109 28 - 2698 26 - 6926 6792 - 8453 8324 - 9023 11750 470 2670 4760 5410 7500 10690 1490 5380 6870 7240 8430 10340 - 11772 4-1/2" 12.6# 13Cr80 24 - 10189 8454 - 9025 Structural 4-1/2" HES TNT Packer 10057 8219 Torin Roschinger Operations Manager Leif Knatterud leif.knatterud@hilcorp.com 907-564-4667 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 0028305, 0028310 24 - 8329 N/A N/A 480 590 46919 59382 66 88 1450 1400 1060 1160 N/A 13b. Pools active after work:Prudhoe Oil No SSSV Installed 10057, 8219 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 Grace Christianson at 2:05 pm, Aug 06, 2025 Digitally signed by Torin Roschinger (4662) DN: cn=Torin Roschinger (4662) Date: 2025.08.06 13:57:28 - 08'00' Torin Roschinger (4662) DSR-9/10/25JJL 8/12/25 RBDMS JSB 080825 ACTIVITY DATE SUMMARY 7/14/2025 ***WELL S/I ON ARRIVAL*** R/U .160 ***CONTINUED ON 7-15-25*** 7/14/2025 TFS Unit 1 Did not pump any Fluid Stood by for Slickline to rig up. ***JOB CONTINUES to 07-15-2025*** 7/15/2025 ***CONTINUED FROM 7-14-25*** T-BIRD TO LOAD TBG W/ 180 BBLS CRUDE. BRUSH AND FLUSH TBG 3.55" TO PATCH @ 10,479' SLM PULLED NS PATCH FROM 10,481' MD DRIFT w/ 3.70" BARBELL FOR CIBP TO 10,750' SLM (no issues) ***WELL S/I ON DEPARTURE**** 7/15/2025 ***JOB CONTINUED from 07-14-2025*** T/I/O=2400/1175/0 TFS Unit 1 Assist Slickline (Load and Flush) Pumped a total of 200 BBLS Crude to Load the Tubing and Assist Slickline with a brush and flush at 0.5 BPM for 20 BBLS after the Load. Slickline in control of well upon Departure. FWHP=250/1250/0 7/16/2025 DAILY SUMMARY ***WELL S/I ON ARRIVAL*** (SET 3.5'' OD CIBP) RIG UP YJ ELINE. PT PCE 300 PSI LOW 500/3000 psi (good) SET YJ 3.5" CIBP AT 10690', CCL TO MID ELEMENT=12.1' CCL STOP DEPTH=10,677.9 '. GAMMA RAY CCL LOG CORRELATE TO SLB JEWERLY LOG DATED 03=AUG- 2012 WELL TURNED OVER TO DS READY TO POP *** WELL S/I ON DEPARTURE*** Daily Report of Well Operations PBU C-28B 7. Property Designation (Lease Number): 1. Operations Performed: 2. Operator Name: 3. Address: 4. Well Class Before Work:5. Permit to Drill Number: 6. API Number: 8. Well Name and Number: 9. Logs (List logs and submit electronic data per 20AAC25.071): 10. Field/Pool(s): Susp Well Insp Install Whipstock Mod Artificial Lift Perforate New Pool Perforate Plug Perforations Coiled Tubing Ops Other Stimulate Fracture Stimulate Alter Casing Pull Tubing Repair Well Other: Change Approved Program Operations shutdown 11. Present Well Condition Summary: Casing Length Size MD TVD Burst Collapse Exploratory Stratigraphic Development Service 14. Attachments (required per 20 AAC 25.070, 25.071, & 25.283) 16. Well Status after work: 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. OIL GAS WINJ WAG GINJ WDSPL GSTOR Suspended SPLUG Authorized Name and Digital Signature with Date: Authorized Title: Contact Name: Contact Email: Contact Phone: PBU C-28B Patch Perforations Hilcorp North Slope, LLC 3800 Centerpoint Dr, Suite 1400, Anchorage, AK 99503 210-063 50-029-20867-02-00 11864 Conductor Surface Intermediate Liner Liner 9023 80 2706 8461 2012 1679 11776 20" 13-3/8" 9-5/8" 7" 4-1/2" 9025 29 - 109 28 - 2734 26 - 8487 8327 - 10339 10183 - 11862 29 - 109 28 - 2698 26 - 6926 6792 - 8453 8324 - 9023 11750 470 2670 4760 5410 7500 None 1490 5380 6870 7240 8430 10340 - 11772 4-1/2" 12.6# 13Cr80 24 - 10189 8454 - 9025 Structural 4-1/2" HES TNT Packer 10057 8219 Torin Roschinger Operations Manager Michael Hibbert michael.hibbert@hilcorp.com 907-903-5990 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 0028305, 0028310 24 - 8329 N/A N/A 588 766 60355 40922 29 48 1525 1250 1220 1500 N/A 13b. Pools active after work:Prudhoe Oil No SSSV Installed 10057, 8219 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 Grace Christianson at 11:34 am, Nov 21, 2024 Digitally signed by Torin Roschinger (4662) DN: cn=Torin Roschinger (4662) Date: 2024.11.21 05:02:54 - 09'00' Torin Roschinger (4662) DSR-11/21/24WCB 2-7-2025 RBDMS JSB 112724 ACTIVITY DATE SUMMARY 11/11/2024 Temp=S/I (Freeze protect Flowline Pre-Slickline) Pumped 9 BBLS of 60/40 and 37 BBLS of crude in accordance to west side recipe. 11/11/2024 ***WELLS FLOWING ON ARRIVAL*** (Patch tubing / liner) DRIFT TO 10,600' SLM w/ 40' PATCH DRIFT ***WELL LEFT S/I ON DEPARTURE, PAD-OP NOTIFIED OF STATUS*** 11/14/2024 *** WELL SI ON ARRIVAL*** (SET PATCH) PT 300/3000PSI, FUNCTION WLVS RIH WITH NS PATCH. 32' BETWEEN ELEMENTS. CORRELATE TO SLB PERF RECORD 09FEB15 SET PATCH DEPTH: 10485'-10517' ME-ME. CCL TO ME =14', CCL STOP=10471' TOP OF PATCH AT 10481', BOTTOM OF PATCH AT 10521', TAG AFTER SET MIN ID = 2.37" WELL LEFT SI ON DEPARTURE. ***JOB COMPLETED*** Daily Report of Well Operations PBU C-28B SET PATCH DEPTH: 10485'-10517' ME-ME. CCL TO ME =14', CCL STOP=10471' TOP OF PATCH AT 10481', 7. Property Designation (Lease Number): 1. Operations Performed: 2. Operator Name: 3. Address: 4. Well Class Before Work:5. Permit to Drill Number: 6. API Number: 8. Well Name and Number: 9. Logs (List logs and submit electronic data per 20AAC25.071): 10. Field/Pool(s): Susp Well Insp Install Whipstock Mod Artificial Lift Perforate New Pool Perforate Plug Perforations Coiled Tubing Ops Other Stimulate Fracture Stimulate Alter Casing Pull Tubing Repair Well Other: Change Approved Program Operations shutdown 11. Present Well Condition Summary: Casing Length Size MD TVD Burst Collapse Exploratory Stratigraphic Development Service 14. Attachments (required per 20 AAC 25.070, 25.071, & 25.283) 16. Well Status after work: 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. OIL GAS WINJ WAG GINJ WDSPL GSTOR Suspended SPLUG Authorized Name and Digital Signature with Date: Authorized Title: Contact Name: Contact Email: Contact Phone: PBU C-28B Mill CIBPs Hilcorp North Slope, LLC 3800 Centerpoint Dr, Suite 1400, Anchorage, AK 99503 210-063 50-029-20867-02-00 11864 Conductor Surface Intermediate Liner Liner 9023 80 2706 8461 2012 1679 11776 20" 13-3/8" 9-5/8" 7" 4-1/2" 9025 29 - 109 28 - 2734 26 - 8487 8327 - 10339 10183 - 11862 29 - 109 28 - 2698 26 - 6926 6792 - 8453 8324 - 9023 11750 470 2670 4760 5410 7500 None 1490 5380 6870 7240 8430 10340 - 11772 4-1/2" 12.6# 13Cr80 24 - 10189 8454 - 9025 Structural 4-1/2" HES TNT Packer 10057, 8219 10057 8219 Torin Roschinger Operations Manager Michael Hibbert michael.hibbert@hilcorp.com 907-903-5990 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 0028305, 0028310 24 - 8329 N/A N/A 89 7157 20 300 200 N/A 13b. Pools active after work:Prudhoe Oil No SSSV Installed STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS Sr Pet Eng: Sr Pet Geo: Form 10-404 Revised 10/2022 Submit in PDF format to aogcc.permitting@alaska.gov Sr Res Eng: Due Within 30 days of Operations 582 45521 410 1500 1056 By Grace Christianson at 1:13 pm, Apr 24, 2024 Digitally signed by Torin Roschinger (4662) DN: cn=Torin Roschinger (4662), ou=Users Date: 2024.04.24 11:42:48 -08'00' Torin Roschinger (4662) WCB 7-15-2024 RBDMS JSB 043024 DSR-4/29/24 ACTIVITY DATE SUMMARY 4/19/2024 CT #9 1.75" Dura Coil Tubing .156 WT. Job Scope = Mill Plugs Stand by for WS rig up. ***Job Continued 4/20/24*** 4/20/2024 CT #9 1.75" Dura Coil Tubing .156 WT. Job Scope = Mill Plugs ***Continued from 4/19/24*** Stand by for WS rig up. MIRU. FP Flowline with 45 bbls Meth/Diesel at 5 bpm. WV Closed. Kill well with 5 bbls Meth spear followed by 230 bbls KCL at 4.7 bpm. WHP still at 525 psi. RIH w/ YJ milling assembly w/ 3.71 venturi burn shoe. Mill BKR CIBP at 10455'. Push down to 11440'. Milling progress slowed considerably. POOH to check Venturi and Burn Shoe. ***Job Continued 4/21/24*** 4/21/2024 CT #9 1.75" Dura Coil Tubing .156 WT. Job Scope = Mill Plugs ***Continued from 4/20/24*** Continued trying to mill CIBP at 11445 CTMD. Jar down a couple of times with no success. POOH. !/2 cup of plug debris recovered. MU YJ milling assembly and 5 bladed 3.7" junk mill. RIH. Mill down to 11555' with numerous stalls and 2 slight overpulls on bottom. Decide to POOH to check mill, 3 overpulls in perfs on trip OOH. FP coil and return lines. Mill considerably worn on outer gauge and outer cutting structure. Minimal wear in the mill face. Stack down, Change Packoffs, Check Chains, Trim 25' of Coil. MU YJ MHA and venturi w/ 3.7" shoe. Venturi down from 10,000' CTMD. Set down 11,000' ***Well Control Drill and H2S Drill with Crew*** ***Job Continued 4/22/24*** 4/22/2024 CT #9 1.75" Dura Coil Tubing .156 WT. Job Scope = Mill Plugs ***Continued from 4/21/24*** Continue OOH w/ venturi. A lot of brass fines, small rubber chunks and some slips chunks. MU motor and 3.7" 5 bladed junk mill. RIH to dry tag @ 11335'. Turn Mill and run past... pushing debris down to lower CIBP @ 11536'. Mill for 30 minutes and lost all returns. Push lower CIBP and debris down to PBTD, 11750' CTMD. Mech Counter = 11792'. Injectivity = 2.5 BPM @ 665 psi. Confirmed with OE will not make another Venturi Run or Set a Dream Catcher. FP Coil with Diesel. Pump additional 5 bbl diesel Cap in well. Pad Op will bring well online after coil leaves with PBGL. RDMO. ***Job Completed*** Daily Report of Well Operations PBU C-28B Mill for g @ 30 minutes and lost all returns. Push lower CIBP and debris down to PBTD, 11750' CTMD. Milled CIBP fish correctly shown on new WBS, below. - WCB 7. Property Designation (Lease Number): 1. Operations Performed: 2. Operator Name: 3. Address: 4. Well Class Before Work:5. Permit to Drill Number: 6. API Number: 8. Well Name and Number: 9. Logs (List logs and submit electronic data per 20AAC25.071):10. Field/Pool(s): 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 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 C-28B Hilcorp North Slope, LLC 3800 Centerpoint Dr, Suite 1400, Anchorage, AK 99503 210-063 50-029-20867-02-00 11864 Conductor Surface Intermediate Liner Liner 9023 80 2706 8461 2012 1679 10455 20" 13-3/8" 9-5/8" 7" 4-1/2" 8548 29 - 109 26 - 8487 8327 - 10339 10183 - 11862 29 - 109 26 - 6926 6792 - 8453 8324 - 9023 11534 470 2670 4760 5410 7500 10455, 11540 1490 5380 6870 7240 8430 10340 - 11772 4-1/2" 12.6# 13Cr80 24 - 10189 8454 - 9025 Structural 4-1/2" HES TNT Packer 10057 8219 Stan Golis Sr. Area Operations Manager Wyatt Rivard wrivard@hilcorp.com 907.777.8547 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 13.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 0028305, 0028310 No SSSV Installed 24 - 8329 N/A N/A 619 150 54253 8891 27 2 450 400 1263 678 N/A STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS Sr Pet Eng: Sr Pet Geo: Form 10-404 Revised 10/2021 Submit Within 30 days or Operations Sr Res Eng: 10057, 8219 28 - 2744 28 - 2707 By Samantha Carlisle at 8:58 am, Oct 11, 2021 Digitally signed by Stan Golis (880) DN: cn=Stan Golis (880), ou=Users Date: 2021.10.08 18:07:32 -08'00' Stan Golis (880) DSR-10/11/21MGR15OCT2021 RBDMS HEW 10/11/2021 SFD 10/11/2021 ACTIVITY DATE SUMMARY 9/30/2021 ***WELL FLOWING ON ARRIVAL***(pprof) DRIFT W/ 3.70" x 4' WRP DRIFT FOR CBP TO 10,534' SLM ***WELL S/I ON DEPARTURE*** 10/2/2021 ***WELL ONLINE ON ARRIVAL, DSO NOTIFIED***(set cibp) RIH W/ 4-1/2" BAKER CBP. SET BAKER HUGHES CIBP MID-ELEMENT AT 10,455' ELMD. CORRELATED TO PDS JEWELRY LOG DATED 05-NOV-2012. ***WELL LEFT S/I ON DEPARTURE, TURNED OVER TO DSO*** Daily Report of Well Operations PBU C-28B RECEIVED STATE OF ALASKA 0 ALASKA OIL AND GAS CONSERVATION CO SION APR C 9 2018 REPORT OF SUNDRY WELL OPERA ONS APR [tilt? 1. Operations Performed �� Abandon 0 Plug Perforations m Fracture Stimulate 0 Pull Tubing 0 Operati ❑ Suspend 0 Perforate 0 Other Stimulate 0 Alter Casing 0 Change Approved Program 0 Plug for Redrill 0 Perforate New Pool 0 Repair Well 0 Re-enter Susp Well 0 Other:Mill CIBP-Set CIBP II 2. Operator Name: BP Exploration(Alaska),Inc 4. Well Class Before Work 5. Permit to Drill Number: 210-063 3. Address: P.O.Box 196612 Anchorage, Development I1 Exploratory 0 AK 99519-6612 Stratigraphic 0 Service ❑ 6. API Number: 50-029-20867-02-00 7. Property Designation(Lease Number): ADL 028305,028310 8. Well Name and Number: PBU C-28B 9. Logs(List logs and submit electronic and printed data per 20AAC25.071): 10. Field/Pools: PRUDHOE BAY,PRUDHOE OIL 11.Present Well Condition Summary: Total Depth: measured 11864 feet Plugs measured 10470,11540 feet true vertical 9023 feet Junk measured 11554 feet Effective Depth: measured 10470 feet Packer measured 10057 feet true vertical 8560 feet Packer true vertical 8219 feet Casing: Length: Size: MD: TVD: Burst: Collapse: Structural Conductor 80 20" 29-109 29-109 1490 470 Surface 2706 13-3/8" 28-2734 28-2698 5380 2670 Intermediate 8461 9-5/8" 26-8487 26-6926 6870 4760 Liner 8327 7" 8327-10339 6793-8453 7240 5410 Liner 1679 4-1/2" 10183-11862 8324-9023 8430 7500 Perforation Depth: Measured depth: 10340-11772 feet True vertical depth: 8454-9025 feet Tubing(size,grade,measured and true vertical depth) 4-1/2"12.6#13Cr80 24-10189 24-8329 Packers and SSSV(type,measured and 4-1/2"HES TNT Perm Packer 10057 8219 true vertical depth) No SSSV 12.Stimulation or cement squeeze summary: Intervals treated(measured): SCANNED Treatment descriptions including volumes used and final pressure: .. ; �< 13. Representative Daily Average Production or Injection Data Oil-Bbl Gas-Mcf Water-Bbl Casing Pressure Tubing Pressure Prior to well operation: 532 53563 43 0 1607 Subsequent to operation: 770 52075 63 0 1081 14.Attachments:(required per 20 AAC 25.070.25.071,a 25283) 15.Well Class after work: Daily Report of Well Operations Il Exploratory 0 Development ® Service 0 r Stratigraphic 0 Copies of Logs and Surveys Run 0 16.Well Status after work: Oil I2J Gas 0 WDSPL 0 Printed and Electronic Fracture Stimulation Data 0 GSTOR ❑ WINJ 0 WAG 0 GINJ 0 SUSP 0 SPLUG 0 17.I hereby certify that the foregoing is true and correct to the best of my knowledge. Sundry Number or N/A if C.O.Exempt: N/A Authorized Name: Brown,Don L. Contact Name: Brown,Don L. Authorized Title: Petroleum Engineer Contact Email: browd2@BP.com Authorized Signature: Lev-0 j , L ,._iyl Date: Lj/61'f s> Contact Phone: +1 9075644675 Form 10-404 Revised 04/2017 / /ytf V7-1-- "5 /O I !!! C A �} p /" r® RBDMS CJ'1 4PR 1 � 2016 Submit Original Only 0 • 0 Alaska Oil and Gas Conservation Commission 333 West Seventh Avenue Anchorage, AK 99501-3572 RE: BP Exploration (Alaska), Inc. Report Of Sundry Well Operations (10-404) April 6, 2018 To Whom it May Concern: Attached please find the Report Of Sundry Well Operations for Plug Perforations, Mill CIBP, Set CIBP and Perforate for Well PBU C-28B, PTD #210-063. Sincerely, i' &—(- )1 BP Exploration (Alaska) Inc. P.O. Box 196612 Anchorage, AK 99519-6612 Attachment: Form 10-404 BP Exploration (Alaska), Inc. P.O. Box 196612 Anchorage,AK 99519-6612 • Daily Report of Well Operations PBU C-28B ACTIVITYDATE SUMMARY CTU#8 1.75" CT Job Scope: Mill BP/Log/Set CIBP/Add Perf MIRU. Perform chain inspection, change pack offs, cut coil. MU BHA. Kill well. RIH/w WFD milling BHA. Mill plug from 10622'. 3/9/2018 ***In Progress*** CTU#8 1.75"CT Job Scope: Mill BP/Log/Set CIBP/Add Perf Continue to mill HES BP at 10622'. POH. RIH & Log tie-in. 3/10/2018 ***In Progress*** CTU#8 1.75"CT Job Scope: Mill BP/Log/Set CIBP/Add Perf Continue to mill HES BP at 10622'. POH. RIH & Log tie-in. Log from 10,550'-9,949'ctm. Got good data-12'correction. MU/RIH WFD ctc 2.875", MHA(disco 7/8" ball), x-over 2.85", HST 2.75", WFD CIBP 3.5", OAL=12.87', (MAX OD=3.5"). Set 4-1/2"WFD BB CIBP at 10470ft. POH. MU perf guns. 3/10/2018 ***In Progress*** CTU#8 1.75" CT Job Scope: Mill BP/Log/Set CIBP/Add Perf RIH w/pert guns. Perforate from 10340'-10370'. FP w/diesel 42 bbls down TBG. 3/11/2018 ***complete*** Fluids Summary Bbls Type 172 60/40 Methanol 341 1% KCL 125 1% KCL with safelube 187 Diesel It 1REE= CMYII /PUY NOTES: WELL ANGLE>70°4!)11065'. WBLtEAD= CAN C-2 8 B 4-1/2"CHROME TUBING*" ORIG WEL LBORE ACTUATOR- _._BAKER C &C-28A NOT SFIOW N'" OFB.ELEV= 72.59' BF.ELEV= 37.29' KOP= 2150' Maxx Angle_ ,__.... 2132' 1—j4-1/2"FES X IV,D=3.813" == 91° �� 11811' Datum MD= 10882' Dtltum"ND= 8800'SS 2595' —19-5/8'DV COLLAR 113-3/8'CSG,72#,L-80,D=12.347• H 2742' I---• 1 GAS LFT MANDRELS ST MD ND DEV TYPE VLV LATCH PORT DATE 2 4025 3690 43 MMG DOME RK 16 03/17/15 1 7009 5807 47 MAG SO RK 20 03/17/15 Minimum ID =3.725" @ 10177' 4-1/2" HES XN NIPPLE 8327' I_19-5/8"x7"HRDZXPNPKR,D=6.20" 8343' 95/8'xr BKR HMC LPR HGR,D=623" 9-5/8"CSG,47#,L-80,D=8.681" —{ —8504' 9-5/8'MLLOUT WPDOW(C-28B) 8487'-8504' 9-5/8"WHIPSTOCK(07/15/10) —j 8505' 10027' —4-1/2"HES X Ma,D=3.813' Ili 10067' H7'x4-112"HES TNT PKR,D=3.856' ►: , 10137' —j4-1/2"HES X NP,D=3.813' 10177' —j4-1/2"FES XN NP,D=3.725" 10183' 1_17"X 5"1-RD-E ZXPN PKR w/MACK SLV, D=4.200" 10189' —4-1/2"VN.EG,D=3.958" 4-1/2'TBG,12.6#,13CRVAM TOP, 10189' _0152 � � + 10200' I__7"x5"BKR FLEX-LOCK LJ42 HGR, bpf,D=3.958" '= D=4.29" 10209' _15"X 4-12'XO,D=3.950" 7'UV,26#,L-80 VAM TOP HC XO TO L-80 BTC-M --I 10254' F- T LW,26#,L-80 BTC-M.0383bpf,D=6.276' H 10339' 4 10470' 1_14-1/2"WED BIG BOY CSP(03/10/18) ....-- PERFORATOR SUMMARY i REF LOG: LINDON0726/10 11554'CTM Id FISH:4-12'HES EZ-SVB BP ANGLE AT TOP PERE 35°@ 10340' .11 PUSHED DH(03/10/18) Note:Refer to Roduction DB for historical pert data SIZE SPF INTERVAL Opn/Sqz SHOT SOZ I 11540' I-4-12"WFDCEP(11/06/12) 2-7/8" 6 10340-10370' 0 03/10/18 ...iii,, 2-7/8" 6 10490-10510 C 02/09/15 2-7/8" 6 11360-11390 C 06/23/14 2-7/8" 6 11390-11420 C 06/23/14 11776' PBTD I 2-7/8" 6 11420-11450 C 11/06/12 I;;;; 2-7/8" 6 11572-11772 C 0728110 4:6�4�4,A 4-12'LW,12.6#,L-80 BT-M,.0152 bpf,D=3.958' H 11862' DATE REV BY COMMENTS DATE REV BY COM9r64TS PRIDHOE BAY MT 01/05/83 ORIGINAL COMPLETION 02109/15 DFS/PJC SET BR ADPERF WELL: C-28B 08/13/89 RG WORWVER 03/23/15 MICLIP D GLV CIO(03/17/15) PERMIT Pb:"21(0630 03122!02 NORDIC CTD SIDETRACK(C-28A) 03/19/18 MZIJM ) MILL BP,SET CEP,ADPERFS AR No: 50-029-20867-02-00 07/30110 D141 SIDETRACK(C-28B) SBC 19,T11 N,R14E,1866'Rt.&1034'FEL 11/19/12 CJS/JM)SET CEP&ADFEFF(11/6112) 06/25/14 F M-L&C ADPEFFS(06/23/14) BP Exploration(Alaska) Mv a. 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U CO a6 < Iy cs oo O O O O J0 J O J J 111 p b 4• W W W W W W w m m m W m m m m m v 21 z00Y0 = 00000 ® Q S S Q = m = mix = L -100E000 Q Q Q Q v U la 137 r I u..: CC CC IbIJICCI IrI(r eeIce I I I I I 1 1 1 1 1 I I I I il Y '� c Cl. 0. a 0. 0. 0. 0. 0. c iV �f , pp T uil 'I N X , p G� M O CO N a n 0 M O c0 co 00 CO 0 CD N O N 0 0 V 1.11 N 0 CD a CD O .- 0 0 a- CD as :y O 0000 0002' O „„c, 0000 O O O Oco uj xe O co co re co co 0.' O C) W 0 0 0 Q Q V Q Q Q Q c0 E x m N N O — CD N O O N O N S 0 0 0 CD 0 0 O O O O N O O) M N <O 4 A N N M \ I O) 00 00 in v v a O to M to� E m 0 O 00 M co Of N CO 00 1n N N N N , ). 0 0 0 C.) H `O N NNNNNN NNNN 1111 . 111 . 1 C U . O) C) C) O) C) O) C) O) O) O) p NNNNNN NNNN -�\ ,n 01 0 0 0 0 0 0 0 0 0 0 UM .QJ ` 9:. 0 0 0 0 0 0 0 0 C cos- I 1010I 1C-1 '1 0 1r. 01L7 0j0. I I I I I I I I I I G 0.1 V 1� wC QQQco• ce 0QQ�11� QE • _ •0) � U dW Y 8 `ry W c •i O Y L d i 0. M O M N ). m p 0 00 , Y / cu y N ▪ FI j no E ^ J N N v' _ N !� tE6 a . Q N tJu d J U J U d E (r Z cu c0 CZ r. �� C QQQp111 01 fd F- a a Q STATE OF ALASKA A KA OIL AND GAS CONSERVATION COM., ,ON REPORT OF SUNDRY WELL OPERATIONS 1 1 Operations Abandon El Repair Well ❑ Plug Perforations El Perforate❑ Other LI 5 e - B p Performed Alter Casing❑ Pull Tubing ❑ Stimulate-Frac ❑ Waiver Time Extension❑ Change Approved Program❑ Operat Shutdown❑ Stimulate-Other ❑ Re-enter Suspended WO 2 Operator 4 Well Class Before Work 5 Permit to Drill Number BP Exploration(Alaska),Inc Name Development 0 Exploratory 210-063-0 3 Address P O Box 196612 Stratigraphic ❑ Service❑ 6.API Number Anchorage,AK 99519-6612 50-029-20867-02-00 7 Property Designation(Lease Number) 8 Well Name and Number ADL0028310 PBU C-28B 9 Logs(List logs and submit electronic and printed data per 20AAC25 071) 10 Field/Pool(s) PRUDHOE BAY,PRUDHOE OIL 11 Present Well Condition Summary RECEIVED Total Depth measured 11864 feet Plugs measured See Attachment feet true vertical 9026.23 feet Junk measured None feet MAR 1 1 2015 Effective Depth measured 10609 feet Packer measured See Attachment feet AOG�1�'1 true vertical 8674 56 feet true vertical See Attachment feet vv Casing Length Size MD ND Burst Collapse Structural None None None None None None Conductor 80 20"91.5#H-40 28 5-108 5 28 5-108 5 1490 470 Surface 2706 13-3/8"72#L-80 28-2734 28-2698 48 4930 2670 Intermediate 8460 8 9-5/8"47#L-80 26.2-8487 26 2-6928 63 6870 4760 Production None None None None None None Liner See Attachment See Attachment See Attachment See Attachment See Attachment See Attachment Perforation depth Measured depth 10490-10510 feet 11360-11390 feet 11390-11420 feet 11420-11450 feet 11572-11772 feet True Vertical depth 8579 75-8596 1 feet 9016 08-9018 12 feet 9018 12-9018 9 feet 9018 9-9019 28 feet 9024.26-9027 78 feet Tubing(size,grade,measured and true vertical depth) 4-1/2"12 6#L-80 24 2-10189 2 24 2-8331 98 Packers and SSSV(type,measured and true vertical depth) See Attachment See Attachment See Attachment Packer None None None SSSV 12.Stimulation or cement squeeze summary. Intervals treated(measured). j�,�i A R.. 1 8 ,U I.. SCANNED Treatment descriptions including volumes used and final pressure 13. Representative Daily Average Production or Injection Data Oil-Bbl Gas-Mcf Water-Bbl Casing Pressure Tubing Pressure Prior to well operation 196 18015 86 40 710 Subsequent to operation Well Shut-In 0 840 14 Attachments 15 Well Class after work Copies of Logs and Surveys Run Exploratory ❑ Development 0 Service ❑ Stratigraphic ❑ Daily Report of Well Operations X 16 Well Status after work Oil LI Gas p WDSPL ❑ GSTOR ❑ WINJ ❑ WAG ❑ GINJ❑ SUSP ❑ SPLUG ❑ 17 I hereby certify that the foregoing is true and correct to the best of my knowledge Sundry Number or N/A if C 0 Exempt N/A Contact Garry Catron Email Garry.CatronABP.Com Printed Name Garry Catron Title PDC PE Signature ida,t4.1 C .-. Phone 564-4424 Date 3/10/2015 (i -i 3//71/5- RBDMS14 MAR 1 2 2015 ,1/2 9/7//,5"--— Form 10-404 Revised 10/2012 Submit Onginal Only C-28B 210-063-0 Plugs Attachement SW Name Date MD Description C-28B 2/9/2015 10609 4-1/2" HES EZ SVB Bridge Plug C-28B 11/6/2012 11540 4-1/2"WFD CIBP Packers and SSV's Attachment ADL0028310 SW Name Type MD TVD Depscription C-28B PACKER 8327.43 6795.56 7" Baker ZXP Packer C-28B PACKER 10056.84 8222.2 4-1/2" HES TNT Perm Packer C-28B PACKER 10194.56 8336.43 5" Baker ZXP Top Packer m com v cp o N- r . v m rn —0 Nrr–� to � N I— V O• p) ON C') cps) C) m CO CO ti CO V' CO M CO CO CO LO CO ti N O) (0 (0 LC) cc cc OCD N/ O r CO CO CO 00 03 N CO ▪ 1 1 1 1 1 1 H Ca1 IP CO r N CN CO N pN N N I� c0 00 C) CA � MCNOMOpO p M 0o p r N C▪.) CO 0 2 rM Q M cocoNcc' cov NCO 0)CM N N p N N 00 r C Q J 0 p p p Q O p CO co CO 0 ' 0 N aD N • CO. N N •(A (/) r CO e— - a— zo_ R! O) o cV U p N (A N d- ▪ p (Oa— N- O -- 7 C CO Nr 0 CO I� CON r N W • CD 1- C a ▪ H W W � U• � � QCT p1- zzmo U Z J J U) H _ II = CE a) m p 0 _ T Q I O II = it 0 oM co c6 H c -0 O 0 a H O U) a) v) LU cn a) H O = >- O a (I) 4- c O 3 0 H p H H Q o 0 M 0 II I- H z < U a CL O � LU Qo0 w DF- 0 = _ M QO co a E cmc H DW H O Cb D o .= c ca a0 v o O U a. 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OO IL II D HOO 0p Ha IIU) U) U) Z < OOZO a (n � •- c -_ co W O d O 115 O ) Z Z CO U) 2 H NrilO o O• Q. O U) �> aJ 00 zzJF- U .r- - a) II OJUi 8 = ~ _ (� J r-% C) O) J > J J JZomN c a) w UDOUH w HHHHU H Uo -0 + 0 Ed F- > wWQF- 00 a ai -0 9.:,1 g_ W J � � � OU J CI30 II Qom w OF= 0 - -) 0 v) = O � WU) = WO = u) o - Q � Q E , m E a0) 4, 3 zao * - a) -_-0 ? 2Z a0 _ to Z c N m * 0 2 * * WN * H EOLL * OHDEU) H a' Ja' U) CO LL * Ha off W F- in Lo LU LU >- oN o 0 0 0 F- N N N N 5: in co co N N N N N v- w ` TREE= CNv SA_ r NOTES: WELL ANGLE>70*@ 11065'. V1MLLI-EAD= CRW C-28B * G 28A NOT CHROME SHOTUBING "** OWELLBORE ACTUATOR= BAKER C OKB.BLE/= 72.59' BF.ELEV= 37.29' KOP= 2150' Max Angle= 91°@ 11811' I 2132' 4-1/2"FES X NP,D=3.813" Datum bD= 10882' [I Datum ND= 8800'SS = 2595' —19-5/8'DV COLLAR 13-3/8"CSG,72#,L-80,D=12.34r H 2742' GAS LIT MANDRELS ST MD TVD DEV TYPE VLV LATCH PORT DATE 2 4025 3690 43 MAG DAN RK 0 03/07/11 1 7009 5807 47 MMG MAY RK 0 03/07/11 Minimum ID =3.725" @ 10177' ' 4-1/2" HES XN NIPPLE 832T _19-5/8"x 7"HRDZXPNPKR D=6.20" 8343' 9-5/8"x 7"BKR HMC LNR HGR,C)=6.23" 9-5/8"CSG,47#,L-80,D=8.681' H --8504' 9-5/8"MLLOUT WINDOW(C-28B) 8487'-8504' 9-5/8"WHPSTOCK(07/15/10) —{ 8505' Ili 10027' H4-1/2"FES X NP,ID=3.813' 1005T --7"x4-1/2"FES TNT PKR,D=3.856" V� �i ' 10137' H4-1/2"FES X NP,D=3.813' 1 Illt10177' —14-1/2"HES XN NP,13=3.725" ‘.. 10183' 4 7"x5"HRDOE ZXFN PKR w/TACK SLV, D=4.200" 10189' H4-1/2"WLEG,D=3.958' 4-1/2"TBG, 12.6#,13CRVAMTOP, 10189' l" �+ 10200' _7"x 5"BKR FLEX-LOCK LPR HGR .0152 bpf,D=3.958' D=4.29" 10209' _5"X 4-1/2"XO,D=3.950' 7"LNR,26#,L-80 V AM TOP HC XO TO L-80 BTG M -I 10254' 7"L 26#,L-80 BTC-M.038 f 13=6.276" NR10339' �P PERFORATION SUMMARY , IIS LOG. LVVD ON 07/26/10 �0-.0- 10609' ELM -14-1/2"FSEE -SVB BP(02/09/15) ANGLE AT TOP PERE:85°@ 11360' Pbte:Refer to F oduction DB for historical pert data SIZE SPF NTfR1/AL Opn/Sqz SHOT SQZ i 11540' _14-1/2"WFDCBP(it/O6/12) 2-7/8" 6 10490-10510 0 02/09/15 2-7/8" 6 11360- 11390 C 06/23/14 2-7/8" 6 11390-11420 C 06/23/14 2-7/8" 6 11420- 11450 C 11/06/12 11776' H PBTD 2-7/8' 6 11572- 11772 C 07/28/10 VSIi 44641 4-1/2"LNR 12.6#,L-80 13T-M,.0152 bpf,D=3.958" 11862' DATE REV BY COMMENTS DATE REV BY COALEITS PRUDHOE BAY UGIT 01/05/83 ORIGINAL COMPLETION 03/09/11 SVVC/PJC GLV C/O(03/07/11) WELL C-28B 08/13/89 RIG WORKOV B2 08/03/12 SET/AAD CORRECTED STA#1 VALVE TY FE PERMIT No: 100630 03/22/02 NORDIC CTD SIDETRACK (C-28A) 11/19/12 CIS/SAD SET C13P&ACIFERF(11/06112) AR No: 50-029-20867-02-00 07/30/10 13141 SIDETRACK(C-28B) 06/25/14 Rk4-VJMD ADFERFS(06/23/14) SRC 19,T11N,R14E,1866'EFL&1034'FEL 01/04/11 MBM/PJC ANAL DRLG CORRECTIONS 02/09/15 DHS/PJC SET BP/ADPERF 01/10/11 AK/PJC LNERCORRECTIONS BP Exploration(Alaska) r Image Project Well History File Cover Page XHVZE This page identifies those items that were not scanned during the initial production scanning phase. They are available in the original file, may be scanned during a special rescan activity or are viewable by direct inspection of the file. cQ 1 0 - 0103 Well History File Identifier Organizing (done) ❑ Two-sided III I III III ❑ Rescan Needed III [liii III I RE AN DIGITAL DATA OVERSIZED (Scannable) Color Items: ❑ Diskettes, No. ❑ Maps: VGreyscale Items: ❑ Other, No/Type: ❑ Other Items Scannable by a Large Scanner ❑ Poor Quality Originals: OVERSIZED (Non-Scannable) ❑ Other: ❑ Logs of various kinds: NOTES: ❑ Other:: BY: ACP Date: 1/31/ ' L is/ 14 p Project Proofing III 111111111111 BY: C( Mana ) Date: 1/3 /s/ niP Scanning Preparation 3 x 30 = ` + 3 = TOTAL PAGES q 3 Count does not include cover sheet rt4 BY: Date: ( /s/ ) Production Scanning III 11111 II IIII Stage 1 Page Count from Scanned File: 9 r! (Count does include cover eet) Page Count Matches Number in Scanning Preparation: YES O /� N BY: AV Date: / 31 JILl.. /s/I /l/ 1 iii Stage 1 If NO in stage 1, page(s) discrepancies were found: YES NO BY: Maria Date: /s/ Scanning is complete at this point unless rescanning is required. MINH I ReScanned I BY: Maria Date: /s/ Comments about this file: Quality Checked III III II III 1111III 10/6/2005 Well History File Cover Page.doc o 2O\} m6 w �Ee �] 4 / k 0 ) 0 a - 2 g .4 w cc m o 0 _ § eI ƒ & £wZ10 ° ° ./ k E cixz . 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To Be Submitted PRUDHOE BAY,PRUDHOE OIL 11.Present Well Condition Summary: Total Depth measured 11864 feet Plugs measured 11540 feet true vertical 9026.23 feet Junk measured None feet Effective Depth measured 11540 feet Packer measured See Attachment feet true vertical 9022.31 feet true vertical See Attachment feet Casing Length Size MD TVD Burst Collapse Structural None None None None None None Conductor 80 20"91.5#H-40 26-106 26-106 1490 470 Surface 2706 13-3/8"72#L-80 38-2744 38-2707.26 4930 2670 Intermediate None None None None None None Production 8461 9-5/8"47#L-80 26-8487 26-6928.63 6870 4760 Liner See Attachment See Attachment See Attachment See Attachment See Attachment See Attachment Perforation depth Measured depth 11420-11450 feet 11572-11772 feet True Vertical depth 9018.9-9019.28 feet 9024.26-9027.78 feet Tubing(size,grade,measured and true vertical depth) 4-1/2"12.6#L-80 24-10189 24-8331.82 Packers and SSSV(type,measured and true vertical depth) See Attachment See Attachment See Attachment Packer None None None SSSV 12.Stimulation or cement squeeze summary: Intervals treated(measured): Treatment descriptions including volumes used and final pressure: 13. Representative Daily Average Production or Injection Data Oil-Bbl Gas-Mcf Water-Bbl Casing Pressure Tubing Pressure Prior to well operation: 520 34102 137 0 868 Subsequent to operation: 245 13902 63 0 347 14.Attachments: 15.Well Class after work: Copies of Logs and Surveys Run Exploratory❑ Development El Service❑ Stratigraphic ❑ Daily Report of Well Operations X 16.Well Status after work: _Oil 0 Gas ❑ WDSPI❑ GSTOR ❑ WINJ ❑ WAG ❑ GINJ ❑ SUSP ❑ SPLUCO 17.I hereby certify that the foregoing is true and correct to the best of my knowledge. Sundry Number or N/A if C.O.Exempt: N/A Contact Garry Catron Email Gar .Catron • BP.Com Printed Name Garry Catron Title PDC PE Signature COL, Phone 564-4424 Date 11/30/2012 ' 8OMS DEC 0 4 201 __ 7 21 iz •i3 •,'2— Form 10-404 Revised 10/2012 / ,,( , r� Submit Original Only Packers and SSV's Attachment ADL0028310 SW Name Type MD TVD Depscription C-28B PACKER 8327 6729.92 7" Baker ZXP Packer C-28B PACKER 10057 8157.04 4-1/2" HES TNT Perm Packer C-28B PACKER 10194 8270.67 5" Baker ZXP Top Packer II a) Q p oo 0 0 cN — ocor- o O u) N N- C) - Op) (p'r) Or- M M N 0�0 CO 'a' C 0 N CO N CO 0 CO 00 r' � Nr O0)) O� or) co O) CO N CO • NJ- CV CO CO �Cj C0 (o 00 NI- N p N N M N r` — CO CO Q) N r` a) O M 000 0 co a - N V v- 2 < M r- M CO C) N NC � NMN = 0 I- Q o 0000 CD coo Ooo Q� 030 J J J d 4# J CO N CO N N # fV r` CV V O) N O M EC +' N CA (O U[) r)O (DO � C co O (O - r` O JN '— CO C CD Z • O w H > > U C� c a c r o LLL Z cTo O Z Z j N a) > I- Q El c0 j - 0) D a) E r 2 E w� c N .- a) ., a) 2 O , c N j N (II -0 Z O O O C -0 (0 �i a3 a) • in co -0 - E O - oU -0 C u) O 0_CI_ co o)U �� ° CD w E " 0-CD• C O a ` Q (n _ c L § N 0 O a) _o O (0 EL.' 0\0 (0O CO N 0) Op I� -, - - oCnE - Ea D Q .3 = CO CO m o O D as o a) a) OI L -_ ` E Q > o o 6 I- c Oo 0 o 0) `t (0 (0 (0 '0 = OV o w I C Q_ O 0 C � � E . _N Cam ai o as � N • -2 a) Eo o 2 (0 Y o -o o O = 0 0 u) O Z O o ca o - D D teL _ _ D _' ° 0 o (a ° U . . = ToO co ) OO _I� a. H ai cr n , c:) 4 u) Q w a Q = O -0 0 ,� _0 (0 = o a __ soma E Loo a) u_ E � � co � � > � O = � > O �n I- rno O m m Q ON O (0 J D O 0 C6 - N 7 0 0 CD CO O "06 _I +' U >�> N O a C (0 O N o_ _ C Q LL i U > �U C _0 u) D Z r O CA N Q oi N• M \ U Y Y C �_ Z J ,- O p 2 Y Q N N 0 'E 0 Q O a' �' (0 U_ L (0 a C C ° O C Q C O C U) U') CO� 4- N "O d a) (1) U3 d o o o o •& C ' ,- c -° W z o_ C3 O L J O mop N 6 -c N C . Q p Y n Q 4- p .-.c p • (n ' N O (0 Q= (0 O a (co J C O O O J C c C CD i0 C) o (n 0 (n t Q 0 v y -) o N i0 O• Q � -c o)_c• n � U oho * (� � co p` uu)i ,- D . • o Z � o o Q- - a O. 0_ E _1 E o -ap7- � n.- Ii uo) II Z „L o n pO",' o �0 Ce 00 O C O (0 00 (0 c n U Q >� = N E O N O a) E2 O N O ,_ W r- W O O � > Q O) 2 = 0 c6 oa (3v 0 , (N c o � � 2w (n � _ « o - p E p ' == u) � a2 oas es o � a0 ° r, I- o a) mN 7T) ,D _ _ _•O Q 3 E 2 N m a) - m (n y a Z N � _ vim- -p 2 � : o > a a) _ o } U D oO = a) . Q m a) c0z O a) (\I Q � = al J L c to �i o� o p IA1 > El.?. O = O N L � a) r Q > omcn -' v oh i o Q ui D o rh- ° c rn E I N o)= Q p 0 QrN (ten o a�i a (.0 0 () D o a`) —° 1 > CO C >i o E o 0 Q - C/)) C o °) c 23 _a o Q a,) .L — = O > Q I O N cc > 0 O I- o_>a 2 (o L O a) , H a)I Q p 6O Ill a) OO C F __ 0 L (n Ucn > Qm -Da Ecn OcO o - ate Or- O O = ° N : N N N O O O N N N r TREE= CIW SA NOTES: WELL ANGLE>70°@ 11065'. ACTUATOR®R= BAKER C C-28B ***4 CHROME TUBING ***ORIG W ELLBORE& C-28A NOT SHOWN*** KB.ELEV= 72.59' BF.B_EV= 37.29' I - - - I KOP= 2150' Max Angle= 91°@ 11811' I I 213F-1-4-1/2"PIES X tom,ID=3.813" Datum MD= 10882' DatumTVD= 8800'SS "" 2595' 9-5/8"DV COLLAR I F13-3/8"CSG,72#,L-80,D=12.347" -I 2742' ■ GAS LIFT MANDRELS ST MD TVD DEV TYPE VLV LATCH PORT DATE '1 2 4 4025 3690 43 WIG DMY RK 0 03/07/11 1 7009 5807 47 WAG DMY RK 0 03/07/11 Minimum ID =3.725" @ 10177' 4-1/2" HES XN NIPPLE — 832T H9-5/8x7"HRDZXPNPKR,D=6.20" I 1 8343' 9-5/8"x 7"BKR MAC LNR HGR D=6.23" 9-5/8"CSG,47#,L-80,D=8.681" H -8504' 1 9-5/8'MLLOUT WNDOW(C-28B) 8487'-8504' 9-5/8"WHPSTOCK(07/15/10) H 8505' 10027' -14-1/2'I-ES X NP,ID=3.813J Ili1005T -7"x4-1/2"HES TNT PKR,D=3.856" ►;42 10137' �-112"HESX NP,D=3.813' ii 10177' -14-1/2"FES XN NP,I)=3.725" 10183' -7"x5"FRD-E ZXPN PKR w/TIEBACK SLV, D=4.200" 10189' -14-1/2'WLEG,D=3.958" 4-1/2"TBG, 12.6#,13CRVAMTOP, 10189' V 1 { 10200' �7"x 5"BKR FLEX-LOCK LNR HGR, .0152 bpf,113= i =3.958" � D=4.29" 1 10209' _5"X 4-1/2"XO,ID=3.950' 7"LNR,26#,L-80 VAM TOP HC XO TO L-80 BTC-M -I 10254' 7"LNR,26#,L-80 BTC-M.0383bpf,ID=6.276" -1 10339' ` PERFORATION SUMS ARY ( -' REF LOG. LWDON07/26/10 '-_ 11540' _14-1/2"WFDCBP(11/06/12) ANGLE AT TOP PERF:89°@ 11420' \•\ ■ Note:Refer to Production DB for historical pert data ~ SIZE SPF NTERVAL Opn/Sqz DATE 2-7/8" 6 11420- 11450 0 11/06/12 2-7/8" 6 11572- 11772 C 07/28/10 PBTD —I 11776' #�1/�4�4� 14-1/2"LNR, 12.6#,L-80 BT-M,.0152 bpf,D=3.958" H 11862' DATE REV BY COW/EMS DATE REV BY COM ENTS PRUDHOE BAY LMT 01/05/83 ORIGINAL COMPLETION 01/04/11 MBMPJC FINAL DRLG CORRECTIONS WELL: C-28B 08/13/89 RIG WORKOVER 01/10/11 AK/PJC LINER CORRECTIONS PERMIT No:`2100630 03/22/02 NORDIC CTD SIDETRACK (C-28A) 03/09/11 SWC/PJC GLV CIO(03/07/11) AR No: 50-029-20867-02-00 07/30/10 D141 SIDETRACK(C-288) 08/03/12 SET/JM I COATED STA#1 VALVE TY PE SEC 19,T11 N,R14E 1865'FNL&1033'FEL 08/29/10 GTW/AGR GLV C/O(08/06/10) 11/19/12 CJS/JMD SET CBP&ADPERF(11/06/12) 09/22/10 ?/JMD DRLG DRAFT CORRECTIONS BP Exploration(Alaska) bp BP Exploration(Alaska)Inc. Attn:Well Integrity Coordinator, PRB-20 Post Office Box 196612 Anchorage,Alaska 99519-6612 August 22, 2011 REcemer. AUG 312 011 Mr. Tom Maunder Alaska Oil and Gas Conservation Commission 'lie Oft&�aa Cog. 333 West 7th Avenue Afcher&ge Anchorage, Alaska 99501 D, 10 - 063 Subject: Corrosion Inhibitor Treatments of GPB C-Pad Dear Mr. Maunder, Enclosed please find multiple copies of a spreadsheet with a list of wells from GPB C- Pad that were treated with corrosion inhibitor in the surface casing by conductor annulus. The corrosion inhibitor is engineered to prevent water from entering the annular space and causing external corrosion that could result in a surface casing leak to atmosphere. The attached spreadsheet represents the well name, API and PTD numbers, top of cement depth prior to filling and volumes of corrosion inhibitor used in each conductor. As per previous agreement with the AOGCC, this letter and spreadsheet serve as notification that the treatments took place and meet the requirements of form 10-404, Report of Sundry Operations. If you require any additional information, please contact me or my alternate, Gerald Murphy, at 659-5102. Sincerely, Torin Roschinger BPXA, Well Integrity Coordinator J BP Exploration (Alaska ) Inc. Surface Casing by Conductor Annulus Cement,Corrosion inhibitor,Sealant Top-off Report of Sundry Operations(10-404) C-Pad 7/19/11 Corrosion Vol.of cement Final top of Cement top off Corrosion inhibitor/ Well Name PTD# API# Initial top of cement pumped cement date inhibitor sealant date ft bbls ft na gal C-01A 2030100 500292012101 0.3 NA 0.3 NA 3.40 11/16/2010 C-02 1730040 500292012300 0.3 NA 0.3 NA 3.40 11/16/2010 C-03B 2051580 500292012402 0.3 NA 0.3 NA 3.40 11/16/2010 C-04B 2060570 500292012502 1.25 NA 1.25 NA 23.80 10/26/2010 C-05A 2010020 500292012601 0.8 NA 0.8 NA 3.40 11/23/2010 C-06B 2061040 500292012702 1 NA 1 NA 5.10 11/22/2010 C-07A 2000520 500292012801 0.3 NA 0.3 NA 1.70 11/22/2010 C-08B 2050110 500292012902 1 NA 1 NA 5.10 11/20/2010 C-09A 2020940 500292036601 0.1 NA 0.1 NA 0.85 11/23/2010 C-10A 2051370 500292037101 0.1 NA 0.1 NA 3.40 11/12/2010 C-11A 2030480 500292038201 0.1 NA 0.1 NA 1.70 11/13/2010 C-12B 2090850 500292038702 2 NA 2 NA 10.20 11/11/2010 C-13A 1971430 500292040401 10.7 NA 10.7 NA 74.80 11/25/2010 C-15A 2090520 500292042701 10.5 NA 10.5 NA 64.60 11/25/2010 C-16B 2060510 500292043802 45 10.0 0.6 7/19/2011 3.40 7/19/2011 C-17B 2040940 500292043902 1 NA 1 NA 6.80 11/13/2010 C-188 2090710 500292078502 9.6 NA 9.6 NA 69.70 11/23/2010 C-19B 2000050 500292073502 11 NA 11 NA 76.50 10/27/2010 C-20C 2091300 500292074503 1.9 NA 1.9 NA 10.20 11/11/2010 C-21 1820810 500292074503 1.7 NA 1.7 NA 8.50 11/11/2010 C-22A 2060390 500292075801 0.7 NA 0.7 NA 5.10 11/11/2010 C-23C 2081700 500292077503 25 4.0 0.08 7/15/2011 0.85 7/19/2011 C-24A 2040580 500292081601 Sealed NA NA NA NA NA C-25B 2041090 500292081902 0.7 NA 0.7 NA 3.40 11/22/2010 C-26A 1981450 500292083401 0.8 NA 0.8 NA 3.40 11/22/2010 C-27B 2031860 500292084302 7.5 NA 7.5 NA 39.10 11/21/2010 C-28B 2100630 500292086702 1 NA 1 NA 5.10 11/21/2010 C-29A 1961700 500292147201 23 10.0 0.9 7/15/2011 6.80 7/19/2011 C-30A 2081690 500292177701 0.2 NA 0.2 NA 1.70 11/20/2010 C-31B 2030080 500292177502 0.8 NA 0.8 NA 5.10 11/22/2010 C-32C 2061390 500292155903 0 NA 0 NA 0.00 11/13/2010 C-33A 2002020 500292237301 1 NA 1 NA 6.80 11/11/2010 C-34A 2060370 500292178501 2.2 NA 2.2 NA 10.20 11/20/2010 C-35B 2061290 500292155302 1.5 NA 1.5 NA 10.20 11/15/2010 C-36A 2000020 500292179001 2 NA 2 NA 10.20 11/13/2010 C-378 2101000 500292236002 4.7 NA 4.7 NA 30.60 10/28/2010 C-38 1860660 500292157100 0.1 NA 0.1 NA 0.85 11/15/2010 C-39A 2050030 500292238301 1 NA 1 NA 0.85 11/23/2010 C-41A 2041880 500292238501 Sealed NA NA NA NA NA C-42 1930500 500292235700 2.6 NA 2.6 NA 13.60 11/13/2010 OPERABLE: Producer C-28B (PTD #21 00630) Passing MITIA - Tubing integrit 1 restored Page 1_0f-2' Regg, James B (DOA) From: AK, D&C Well Integrity Coordinator[AKDCWelllntegrityCoordinator @bp.com] Sent: Monday, March 07, 2011 1:39 PM 1 ` 7(i it To: Maunder, Thomas E (DOA); Regg, James B (DOA); Schwartz, Guy L (DOA); AK, 0 S GC3 Facility & Field OTL; AK, OPS GC3 Wellpad Lead; Cismoski, Doug A; Engel, Harry R; AK, D&C Wireline Operations Team Lead; AK, D&C Well Services Operations Team Lead; AK, RES GPB West Wells Opt Engr; AK, RES GPB East Wells Opt Engr; AK, OPS Prod Controllers; AK, OPS GC2 Ops Lead Cc: King, Whitney; AK, D&C Well Integrity Coordinator; Glasheen, Brian P Subject: OPERABLE: Producer C-28B (PTD#2100630) Passing MITIA-Tubing integrity restored All, Producer C-28B (PTD#2100630) passed an MITIA on 3/7/11 after slickline set dummy gas lift valves. The passing test confirms tubing integrity has been restored. The well has been reclassified as Operable and may be placed on production when convenient for operations. Please be careful when placing the , well on production as the IA is fluid packed. Thank you, Torin Roschinger (alt. Jerry Murphy) Well Integrity Coordinator Office (907) 659-5102 Harmony Radio x2376 Cell (406) 570-9630 Pager(907)659-5100 Ext. 1154 From: AK, D&C Well Integrity Coordinator Sent: Wednesday, February 16, 2011 5:26 PM To: 'Maunder, Thomas E (DOA)'; 'Regg, James B (DOA)'; 'Schwartz, Guy L (DOA)'; AK, OPS G PCC OSM; AK, OPS GC3 Facility & Field OTL; AK, OPS GC3 Wellpad Lead; Cismoski, Doug A; Enge, Harry R; AK, D&C Wireline Operations Team Lead; AK, D&C Well Services Operations Team Lea.. 'K, RES GPB West Wells Opt Engr; AK, RES GPB East Wells Opt Engr; AK, OPS Prod Controllers; -sheen, Brian P Cc: AK, D&C Well Integrity Coordinator; Walker, Greg (D&C); Holt, Ryan P (ASR Subject: UNDER EVALUATION: Producer C-28 (PTD #2100630) Sustained I; 'ressure Above MOASP All, Producer C-28 (PTD#2100630) has confirmed sustained IA c-.ing pressure above MOASP. The wellhead pressures were tubing/IA/OA equal to SSV/2300/I in 2/13/2011. The well has been reclassified as Under Evaluation. The well may remain online while •rk is conducted to attempt to restore integrity. Plan forward: 1. D: TIFL 2. S: Pending results of the TIFL, du y gas lift valves and MIT-IA A TIO plot and wellbore schem- c have been included for reference. <<File: Producer C-2: : (PTD #2100630) TIO Plot.doc >> 3/15/2011 c-z6 g UNDER EVALUATION: Producer C ^" (PTD#2100630) Sustained IA Pressi .bove MOASP Page 1 of 1 • Regg, James B (DOA) From: AK, D&C Well Integrity Coordinator[AKDCWeIIIntegrityCoordinator @bp.com] Sent: Wednesday, February 16, 2011 5:26 PM 1 z 7zlh To: Maunder, Thomas E (DOA); Regg, James B (DOA); Schwartz, Guy L (DOA); AK, OPS GC3&PCC OSM; AK, OPS GC3 Facility & Field OTL; AK, OPS GC3 Wellpad Lead; Cismoski, Doug A; Engel, Harry R; AK, D&C Wireline Operations Team Lead; AK, D&C Well Services Operations Team Lead; AK, RES GPB West Wells Opt Engr; AK, RES GPB East Wells Opt Engr; AK, OPS Prod Controllers; Glasheen, Brian P Cc: AK, D&C Well Integrity Coordinator; Walker, Greg (D&C); Holt, Ryan P (ASRC) Subject: UNDER EVALUATION: Producer C-28 (PTD#2100630) Sustained IA Pressure Above MOASP Attachments: Producer C-28B (PTD#2100630)TIO Plot.doc; C-28B (PTD#2100630)wellbore schematic.pdf All, Producer C-28 (PTD#2100630) has confirmed sustained IA casing pressure above MOASP. The wellhead pressures were tubing/IA/OA equal to SSV/2300/0 on 2/1372011. The well has been reclassified as Under Evaluation. The well may remain online while work is conducted to attempt to restore integrity. Plan forward: 1. D: TIFL 2. S: Pending results of the TIFL, dummy gas lift valves and MIT-IA A TIO plot and wellbore schematic have been included for reference. <<Producer C-28B (PTD#2100630) TIO Plot.doc>> <<C-28B (PTD#2100630)wellbore schematic.pdf>> Please call if you have questions or concerns. Thank you, Gerald Murphy (alt. Torin Roschinger) Well Integrity Coordinator Office (907) 659-5102 Cell (907) 752-0755 Pager(907) 659-5100 Ext. 1154 2/22/2011 0 1-¢oo°OOo � 1 • - N o ti in N 0 m N O CO -N N 6 0 • zti CO zy O LO LO N CO a 'I 1 O O O O O O O O QQ y x M (N r a a N H TREE CIW SAFETY :S: WELL ANGLE>70°@ 11065'. V.ELLHEAD= CM/ ***4-1/2"CHROME TUBING ***ORIGWELLBORE& ACTUATOR= BAKER C -2 8 B C-28A NOT SHOWN*** KB.ELEV= 72.59' BF ELEV= 37.29' I I -KOP Max = 2150' 2132' I-14-1/2"HES X NIP,ID=3.813" Max Angle= 91° @ 11811' 1 1 Datum MD= 10882' Datum TVD= 8800'SS _ 2595' 1-19-5/8"DV COLLAR 13-3/8"CSG,72#,L-80, ID=12.347" —I 2742' H-4 L. GAS LIFT MANDRELS ST MD TVD DEV TYPE VLV LATCH PORT DATE Ili 1 2 4025 3690 43 MMG DOME RK 16 08/06/10 1 7009 5807 47 KBG-2 SO RK 20 08/06/10 Minimum ID = 3.725" @ 10177' 4-1/2" HES XN NIPPLE 8327' I__19-5/8"x7"HRDZXPNPKR, ID=6.20" I KV 8343' 149-5/8"x7"BKR HMC LNR HGR, ID=6.23" 9-5/8"CSG.47#.L-80, ID=8.681" --I -8504' J 9-5/8"MILLOUT WINDOW(C-28B) 8487'-8504' 9-5/8"WHIPSTOCK(07/15/10) -I 8505' I 10027' —I4-1/2"HES X NIP,ID=3.813" I 10057' I-7"x4-1/2"HES TNT PKR, ID=3.856" �i , 10137' I-14-1/2"HES X NIP, ID=3.813" I II 10177' I-{4-1/2"HES XN NIP,ID=3.725" I 10183' I_7"x5"HRD-EZXPN PKR w/TIEBACK SLV, ID=4.200" 10189' I-I4-1/2"WLEG,ID=3.958" I 4-1/2"TBG, 12.6#,13CR VAM TOP, H 10189' I ' It. I 10200' I 7"x5"BKR FLEX-LOCK LNR HGR, .0152 bpf, ID=3.958" V=% ID=4.29" 10209' I_1 5"X 4-1/2"XO.ID=3.950" I 7"LNR, 26#,L-80 VAM TOP HC XO TO L-80 BTC-M —I 10254' I- 7"LNR,26#, L-80 BTC-M.0383bpf, ID=6.276" 10339' PERFORATION SUMMARY REF LOG: LWD ON 07/26/10 ANGLE AT TOP PERF: 86° @ 11572' Note: Refer to Production DB for historical perf data SIZE SPF INTERVAL Opn/Sqz DATE 2-7/8" 6 11572- 11772 0 07/28/10 PBTD --I 11776' I •11�4��+i 4-1/2"LNR, 12.6#,L-80 IBT-M. .0152 bpf,ID=3.958" H 11862' I DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 01/05/83 ORIGINAL COMPLETION 01/04/11 MBM/PJC FINAL DRLG CORRECTIONS WELL: C-28B 08/13/89 RIG WORKOVER 01/10/11 AK/PJC LINER CORRECTIONS PERMIT No:'2100630 03/22/02 NORDIC CTD SIDETRACK (C-28A) API No: 50-029-20867-02-00 07/30/10 D141 SIDETRACK(C-28B) SEC 19,T11 N,R14E 1865'FNL&1033'FEL 08/29/10 GTW/AGR GLV C/O(08/06/10) 09/22/10 ?/JMD DRLG DRAFT CORRECTIONS BP Exploration (Alaska) STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION WELL COMPLETION OR RECOMPLETION REPORT AND LOG la. Well Status: ®Oil ❑Gas ❑SPLUG ❑Other ❑Abandoned ❑Suspended lb. Well Class: 20AAC 25.105 20AAC 25.110 ® Development ❑Exploratory ❑ GINJ ❑WINJ ❑WAG ❑WDSPL ❑Other No.of Completions One ❑Service ❑Stratigraphic 2. Operator Name: 5.Date Comp.,Susp.,or Aband.: 12. Permit to Drill Number: BP Exploration(Alaska)Inc. 7/30/2010 210-063 3. Address: 6.Date Spudded: 13. API Number: P.O. Box 196612,Anchorage,Alaska 99519-6612 7/17/2010 50-029-20867-02-00 4a. Location of Well(Governmental Section): 7.Date T.D.Reached: 14. Well Name and Number: Surface: 7/25/2010 PBU C-28B 1865'FNL, 1033'FEL, SEC. 19,T11N, R14E, UM 8. KB(ft above MSL): 72.6' 15.Field/Pool(s): Top of Productive Horizon: 2008'FNL,2635'FEL, SEC. 30,T11N, R14E, UM GL(ft above MSL): 37.29' Prudhoe Bay Field/Prudhoe Bay Total Depth: 9.Plug Back Depth(MD+TVD): Oil Pool 2637'FNL,2463'FEL, SEC. 30,T11N, R14E, UM 11776' 9028' 4b. Location of Well(State Base Plane Coordinates,NAD 27): 10.Total Depth(MD+TVD): 16. Property Designation: Surface: x- 664359 y- 5959353 Zone- ASP4 11864' 9026' ADL 028305&028310 TPI: x- 662896 y- 5953899 Zone- ASP4 11.SSSV Depth(MD+TVD): 17. Land Use Permit: Total Depth:x- 663085 y- 5953273 Zone- ASP4 None None 18.Directional Survey: ®Yes ❑No 19.Water depth,if offshore: 20. Thickness of Permafrost(ND): (Submit electronic and printed information per 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): 22. Re-Drill/Lateral Top Window MD/TVD: DIR, GR, RES, NEU, DEN 8487' 6929' 23. CASING,LINER AND CEMENTING RECORD SETTING DEPTH MD SETTING DEPTH TVD HOLE AMOUNT CASING WT.PER FT. GRADE TOP BOTTOM TOP BOTTOM SIZE CEMENTING RECORD PULLED 20"x 30" Insulated Conductor Surface 110' Surface 110' 36" 9 cu vds Concrete 13-3/8" 72# L-80 Surface 2744' Surface 2705' 17-1/2" 3993 cu ft Permafrost II 9-5/8" 47# L-80 Surface 8487' Surface 6929' 12-1/4" 1413 cu ft Class'G'. 130 cu ft PF'C' 7" 26# L-80 8327' 10339' 6795' 8456' 8-1/2" 253 cu ft Class'G' • 4-1/2" 12.6# L-80 10183' 11862' 8327' 9026' 6-1/8" 264 cu ft Class'G' 24. Open to production or injection? ®Yes ❑No 25. TUBING RECORD If Yes,list each interval open SIZE DEPTH SET(MD) PACKER SET(MD/TVD) (MD+TVD of Top&Bottom;Perforation Size and Number): 2-7/8"gun diameter,6 SPF 4-1/2", 12.6#, 13Cr80 10189' 10057'/8222' MD ND MD ND _ 11572'-11772' 9024'-9028' 26. ACID,FRACTURE,CEMENT SQUEEZE,ETC. I COMPLE7(i DEPTH INTERVAL(MD) AMOUNT AND KIND OF MATERIAL USED I . 22 00' Freeze protected with 151 Bbls of Diesel • 27. PRODUCTION TEST Date First Production: Method of Operation(Flowing,Gas Lift,etc.): August 7,2010 Flowing Date of Test: Hours Tested: Production For OIL-BBL: GAS-MCF: WATER-BBL: CHOKE SIZE: GAS-OIL RATIO: 9/2/2010 6 Test Period ♦ 269 2707 26.75 96 10047 Flow Tubing Casing Press: Calculated OIL-BBL: GAS-MCF: WATER-BBL: OIL GRAVITY-API(CORR): Press. 250 600 24-Hour Rate 4 1078 10829 107 None 28. CORE DATA Conventional Core(s)Acquired? ❑Yes IS No Sidewall Core(s)Acquired? ❑Yes ®No If Yes to either question,list formations and intervals cored(MD+TVD of top and bottom of each),and summarize lithology and prileayNteill lafmrater (submit separate sheets with this form,if needed). Submit detailed descriptions,core chips,photographs and laboratory analytiat OuttneMiaii0.071. None ii S 2010 ABDMS SEP 0 9 29 - •, ri Q crfinissiol Form 10-407 Revised 12/2009 NTINUED ON REVERSE Sub it riginal Only / . -lo � � (o7/o O C; 29. GEOLOGIC MARKERS(List all formations and n. Ors encountered): 30. ORMATION TESTS NAME MD ND Well Tested? ❑Yes ®No Permafrost Top If yes,list intervals and formations tested,briefly summarizing test Permafrost Base results. Attach separate sheets to this form,if needed,and submit detailed test information per 20 AAC 25.071. TSGR 10355' 8469' None TSHU 10386' 8494' TSAD 10479' 8571' 43SB 10614' 8678' T/Zone 3 10704' 8746' T/Zone 2C 10827' 8831' T/Zone 2B 10930' 8893' 23SB 10940' 8898' 22TS 11065' 8953' 21TS 11136' 8976' Tone 2A 11208' 8993' Formation at Total Depth(Name): lvishak 11864' 9026' 31.List of Attachments: Summary of Daily Drilling Reports, Post Well Work Summary,Well Schematic Diagram,Leak Off Test Summary and Survey 32.I hereby certify that the foregoing is true and correct to the best of my knowledge. //� / i Signed: Sondra Ste v n _Title: Drilling Technologist Date: �.wl'v 1 " I PBU C-28B 210-063 Prepared By Name/Number. Elizabeth Barker 564-4628 Well Number Permit No./Approval No. Drilling Engineer: Charles Reynolds, 564-5480 INSTRUCTIONS General: This form is designed for submitting a complete and correct well completion report and log on all types of lands and leases in Alaska. Submit a well schematic diagram with each 10-407 well completion report and 10-404 well sundry report when the downhole well design is changed. Item la: Classification of Service Wells: Gas Injection,Water Injection,Water-Alternating-Gas Injection,Salt Water Disposal,Water Supply for Injection, Observation,or Other. Multiple completion is defined as a well producing from more than one pool with production from each pool completely segregated. Each segregated pool is a completion. Item 4b: TPI(Top of Producing Interval). Item 8: The Kelly Bushing and Ground Level elevation in feet above mean sea level. Use same as reference for depth measurements given in other spaces on this form and in any attachments. Item 13: The API number reported to AOGCC must be 14 digits(ex: 50-029-20123-00-00). Item 20: Report true vertical thickness of permafrost in Box 20. Provide MD and ND for the top and base of permafrost in Box 28. Item 23: Attached supplemental records for this well should show the details of any multiple stage cementing and the location of the cementing tool. Item 24: If this well is completed for separate production from more than one interval(multiple completion),so state in item 1,and in item 23 show the producing intervals for only the interval reported in item 26. (Submit a separate form for each additional interval to be separately produced, showing the data pertinent to such interval). Item 27: Method of Operation: Flowing,Gas Lift,Rod Pump,Hydraulic Pump,Submersible,Water Injection,Gas Injection,Shut-In,or Other(explain). Item 28: Provide a listing of intervals cored and the corresponding formations,and a brief description in this box. Submit detailed description and analytical laboratory information required by 20 AAC 25.071. Item 30: Provide a listing of intervals tested and the corresponding formation,and a brief summary in this box. Submit detailed test and analytical laboratory information required by 20 AAC 25.071. Form 10-407 Revised 12/2009 Submit Original Only TREE= 4-1/16"FMC S. 'NOTES: ***CHROME TUBING*** WELLHEAD= McEVOY ACTUATOR= BAKER }v{ KB.ELEV= 72.59' JC BF.ELEV= 37.29' �`° /0 L j KOP= 2150' Max x Anglle e= 91° @ 11811' 2132' I-14-1/2"X NIP(9CR), ID=3.813" I Datum MD= 10882' SV DRAFT Datum TVD= 8800'SS 2595' I-19-5/8"DV COLLAR I 13-3/8"CSG,72#,L-80,ID=12.347" -I 2742' I-, GAS LIFT MANDRELS r L ST MD TVD DEV TYPE VLV LATCH PORT DATE IF—�I 2 4025 3690 43 MMG DOME RK 16 08/06/10 1 7009 5807 47 MMG SO RK 20 08/06/10 Minimum ID = 3.725" @ 10177' 4-1/2" XN NIPPLE 8327' 1_49-5/8"x7"HRD ZXPN PKR, ID=6.20" I 8342' I_19-5/8"x5"BKR HMC LNR HGR, ID=6.23" 9-5/8"CSG,47#,L-80, ID=8.681" -I 8487' I - 9-5/8"MILLOUT WINDOW(C-288) 8487'-8504' 10027' I-I 4-1/2"X NIP(9CR), ID=3.813" I 10057' I- 7"x4-1/2"HES TNT PKR,ID=3.856" 10137' I-I4-1/2"X NIP(9CR), ID=3.813" I 10177' H4-1/2"XN NIP(9CR), ID=3.725" I 10194' Id 7"x5"HRD-E ZXPN PKR 4-1/2"TBG, 12.64, 13CR,VT.0152 bpf, ID=3.958" H 10189' , w/11'PBR, ID=4.20" 10200' I-17"x5"BKR FLEX-LOCK LNR HGR, ID=4.29" I 7"LNR,264,L-80,TCII.0383bpf, ID=6.276" H 10339' 14 PERFORATION SUMMARY REF LOG: LWD ON 07/26/10 ANGLE AT TOP PERF: 86° @ 11572' Note: Refer to Production DB for historical perf data SIZE SPF INTERVAL Opn/Sqz DATE 2-7/8" 6 11572- 11772 0 07/28/10 PBTD 11776' Y•.•.�.* I�.s•w.♦ 4-1/2"LNR, 12.64,L-80, .0152 bpf, ID=3.958" H 11862' ���•�4 DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 01/05/83 ORIGINAL COMPLETION WELL: C-28A 08/13/89 RIG WORKOVER PERMIT No: 2020450 03/22/02 NORDIC CTD SIDETRACK (C-28A) API No: 50-029-20867-01 07/30/10 D141 SIDETRACK(C-28B) SEC 19,T11 N,R14E 1865'SNL&1033'WEL 08/29/10 GTW/AGF GLV C/O(08/06/10) BP Exploration (Alaska) C-28B, Well History (Post Rig Sidetrack) Date Summary 30-Jul-2010 T/I/O =0/0/0 Pressure tested lubricator Low : 300 PSI/5 min. - pass High : 3500 PSI/5 min - pass Pulled 4-1/16" CIW "H" BPV#131 thru stack, RKB=24.01 +2.00, 3 - 5' ext. +centralizer used, tag @ 78" ....BPV was inadvertently set by service hand.... no problems. 31-Jul-2010 T/I/0=0/0/0 Pressure tested lubricator to 300 psi low/pass-3500 psi high/pass; Pulled CIW TWC#283 @ 102", 1-2' ext. used, N/D-N/U tree; Set CIW BPV#710 @ 102", 1-2' ext. used; Doyon 141 RDMO 1-Aug-2010 T/I/O = 650/680/0 Pressure tested lubricator Low-300 psi/5 min. 09:12-09:17- pass ; High- 3500 psi/5 min. 09:20 -09:25- pass Pulled 4-1/16" CIW "H" BPV# 710 thru tree, 1-1' ext. used, tag @ 120"....post-Doyon 141....no problems. 5-Aug-2010 ***WELL S/I ON ARRIVAL*** (post SDTRK) PULLED B&R FROM RHC-M @ 10,160' SLM (10,177' MD) PULLED RK- DGLV FROM STA# 1@ 6994' SLM/7009' MD PULLED RKP-DCR FROM STA#2 @ 4001' SLM/4025' MD SET RK-LGLV IN STA#2 @ 4001' SLM/4025' MD NOTE: GLM'S ARE 4-1/2" CA.MMG MANDRELS (4025' &7009') ***CONT ON 8/6/10 WSR*** 6-Aug-2010 CONT FROM 8/5/10 WSR*** (post sdtrk) SET RK-OGLV IN STA# 1 @ 6994' SLM/7009' MD PULLED RHC FROM 10160' SLM/ 10177' MD ***WELL S/I ON DEPARTURE/PAD OP NOTIFIED*** Page 1 of 1 North America-ALASKA-BP Page 1 of 1 Operation Summary Report Common Well Name:C-28 AFE No Event Type:MOBILIZATION(MOB) Start Date:7/10/2010 End Date:7/30/2010 ,X3-00VVP-C(500,829.00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.:DOYON 141 Spud Date/Time:3/12/2002 12:00:00AM Rig Release:7/30/2010 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:C-28B @65.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations I —_— (hr) (ft) 7/10/2010 15:00 - 20:00 5.00 MOB P PRE RIG RELEASED FROM J-13 AT 1500 HRS { PJSM RIG DOWN MODULES BLOW DOWN WATER AND STEAM DISCONNECT LINES AND ELECTRICAL CABLES BREAK DOWN ROCK WASHER AND RIG DOWN PIPESHEDS MOBILIZE MATTS,TOOLS AND EQUIPMENT TO C-PAD 20:00 - 00:00 4.00 MOB P PRE MOVE AND SPOT MOTORS,PUMP,AND PIT COMPLEXES ALONG WELL ROW ON C-PAD MOVE ROCKWASHER,BOTH PIPESHEDS, AND BOILER COMPLEX TO C-PAD INSTALL YOKE AND RIDING SHACK ON SUB 7/11/2010 00:00 - 12:00 12.00 MOB P PRE MOVE SUB&EQUIPMENT TO C-28B. 12:00 - 16:30 4.50 MOB P PRE RIG UP ON C-28B.RIG ACCEPTED @ 16:30 HRS 16:30 - 20:30 ' 4.00 BOPSUR P PRE R/U LRS,R/U DOUBLE VALVES ON OA AND IA. TEST LINES TO 4000 PSI.TEST OA TO 250 PSI FOR 5 MINUTES AND 2000 PSI FOR 10 MINUTES.TEST IA TO 250 PSI FOR 5 MINUTES AND 3000 PSI FOR TEN MINUTES. 20:30 - 21:30 1.00 RIGU P PRE R/U LINES AND HOSES FOR CIRCULATING BOTH WAYS. 21:30 - 22:00 0.50 RIGU P PRE PJSM ON CIRCULATING OUT DEISEL FREEZE PROTECT AND AAR ON RIG MIRU. Printed 9/2/2010 2:04:08PM North America-ALASKA-BP Page 1 of 13 Operation Summary Report Common Well Name:C-28 AFE No Event Type:RE-ENTER-ONSHORE(RON) Start Date:7/11/2010 End Date:7/28/2010 'X3-00VVP-C(2,259,032.00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.:DOYON 141 Spud Date/Time:3/12/2002 12:00:00AM Rig Release:7/30/2010 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:C-28B @65.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 7/11/2010 22:00 - 22:45 0.75 RIGU P DECOMP R/U DSM TEST LUBRICATOR TO 500 PSI, t PULL BPV R/D DSM 22:45 - 00:00 1.25 CLEAN P DECOMP PUMP DOWN ANNULUS TAKING RETURNS UP TUBING.DISPLACE 47 BBLS DEISEL SHUT IN AND SET UP TO PUMP DOWN TUBING AND UP ANNULUS. 7/12/2010 00:00 - 02:00 2.00 CLEAN P DECOMP CIRCULATE DEISEL OUT OF ANNULUS (290BBLS)TO TIGER TANK.BLOW DOWN LINES 02:00 - 04:00 2.00 CLEAN P DECOMP CIRCULATE FRESH SEAWATER SURFACE TO I SURFACE TAKING RETURNS TO PITS.615 BBLS @ 7BPM-850 PSI. 04:00 - 05:00 1.00 WHSUR P DECOMP RUN TWC 05:00 - 07:00 2.00 WHSUR N SFAL DECOMP TEST TWC TEST FAILED,PICTURE OF DAMAGED PROFILE ATTACHED 07:00 - 21:00 14.00 BOPSUR N SFAL DECOMP RAN 3 FA TWC AI L TESTS FAIT ED DISCUSSED WITH ANCHORAGE TEAM, SPOTTED GEL ON TOP OF TWC AND TRY AGAIN-NO SUCCESS.ORDER OUT BAKER 43A RBP AND RUN IN TO 90'ON 2 7/8"PAC PIPE.SET BP AND POH WITH 3 JTS.PAC. HELD PRE-SPUD WITH CREW 21:00 - 22:00 1.00-- BOPSUR P DECOMP --TEST DOWN TUBING TO 250 PSI LOW AND 3500 PSI HIGH-GOOD TEST ! I TEST DOWN ANNULUS TO 250 PSI LOW AND 1000 PSI HIGH-GOOD TEST 22:00 - 22:30 0.50 WHSUR P DECOMP IAAR ON TWC&BPV.PJSM ON N/D TREE. 22:30 - 00:00 1.50 WHSUR P DECOMP N/D TREE.SET PLUG IN CONTROL LINE HANGER PORT AND INSPECT HANGER THREADS.THREADS FOR SEATING TWC WERE SCORED BY SLICK LINE.TDS THREADS FOR LANDING JOINT GOOD. SCREWED IN TDS XO SUB 9 TURNS FOR COMPLETE M/U. 7/13/2010 00:00 - 01:45 1.75 WHSUR P DECOMP COMPLETE N/D TREE&ADAPTER FLANGE. REMOVE FROM CELLAR. 01:45 - 03:30 1.75 BOPSUR P DECOMP N/U ADAPTER SPOOL AND BOPE 03:30 - 04:00 0.50 BOPSUR P DECOMP R/U BOPE TEST EQUIPMENT. 04:00 - 10:30 6.50 BOPSUR P DECOMP TEST BOPE WITH 4"AND 4 1/2"TEST JOINTS TO A LOW 250 PSI/HIGH 3500 PSI,EXCEPT FOR ANNULAR BAG.TEST ANNULAR BAG TO 2500 PSI. -EACH TEST CHARTED AND HELD FOR 5 } i MINUTES. -ROLLING TEST AT 2.5 BPM PERFORMED ON SUPER-CHOKE,CONFIRM ABILITY TO CHOKE FLOW TEST WITNESSED BY WSL JOEY LEBLANC AND,TOOLPUSHER VICTOR TORRES. -AOGCC REP CHUCK SCHEVE WAIVED WITNESS OF TEST 10:30 - 11:00 0.50 BOPSUR P DECOMP R/D TEST EQUIPMENT.BLOW DOWN TOP DRIVE,KILL LINE AND CHOKE LINE. Printed 9/2/2010 2:00:46PM North America-ALASKA-BP Page 2 of 13 Operation Summary Report Common Well Name:C-28 AFE No Event Type:RE-ENTER-ONSHORE(RON) Start Date:7/11/2010 End Date:7/28/2010 X3-00VVP-C(2,259,032.00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.:DOYON 141 Spud Date/Time:3/12/2002 12:00:00AM Rig Release:7/30/2010 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:C-28B @65.29ft(above Mean Sea Level) Date From-To Hrs I Task Code NPT 1 NPT Depth Phase Description of Operations hr ft) 11:00 - 12:00 1.00 DHB P ■- DECOMP RIG LOOR 7R"HANDLING EQUIPMENT U I RIG FLOOR. RIG UP ELEVATORS.MAKE UP 2 7/8"OVERSHOT. 12:00 13:00 1.00 DHB P ■- DECOMP RICK IE PACKER RETRIEVING AND L OSSEMBLY. RETRIEVE PACKER AND LAY DOWN ASSEMBLY AND PACKER. 13:00 - 14:45 1.75 PULL P ._ .DECOMP RIG UP TO PULL 4 1/2"TUBING AND SPOOL CONTROL LINE. P 14:45 - 16:15 1.50 PULL P ■ DECOMP • ■ : • : •0: BOTTOMS UP AT 600 GPM,900 PSI. -PUW 122K 16:15 18:45 2.50 PULL P DECAMP LAY DOWN 49 JTS OF 4 1/2"TUBING. RECOVER 4 PUP JTS,25 CLAMPS AND 3 S/S BANDS. 18:45 - 19:15 0.50 PULL P DECOMP RIG DOWN CONTROL LINE SPOOLER. INSTALL STRIPPING RUBBER AND CATCHER. 19:15 - 00:00 4.75 PULL P DECOMP CONTINUE TO LAY DOWN 41/2"TUBING.LAY I DOWN 192 JTS.RECOVER SSSV AND 1 GLM W/2 PUP JTS. 7/14/2010 00:00 - 02:00 2.00 PULL P ® DECOMP CONTINUE TO LAY DOWN 4 1/2"TUBING.LAY DOWN 55 JTS.RECOVER 227 JTS TOTAL. I 02:00 - 03:00 1.00 PULL P ■ DECOMP RIG DOWN TUBING EQUIPMENT.CLEAN AND CLEAR RIG FLOOR. -MONITOR WELL-STATIC 03:00 - 04:00 1.00 EVAL P WEXIT SPOT E-LINE UNIT AND RIG UP E-LINE EQUIPMENT. 04:00 - 08:00 4.00 EVAL - P WEXIT RUN IN HOLE WITH 8 5"GAUGE RING WITH. JUNK BASKET ON E-LINETO 8.885'MD. TAGGED UP AT 8600'AND WORKED THROUGH OBSTRUCTION. PULL OUT OF HOLE AND RECOVER 1 S/S BAND IN JUNK BASKET. 08:00 - 09:00 1.00 EVAL WEXIT RIG UP E-LINE TOOLS FOR EZSV RUN. 09:00 - 12:00 3.00 EVAL WEXIT RUN IN HOLE WITH EZSV ON E-LINE WITH GR/CCL TO 8,509'MD. 12:00 - 13:30 1.50 EVAL N DFAL 8,509.00 WEXIT E-LINE FIRING HEAD FAILURE.POOH WITH EZSV ON E-LINE. 13:30 - 17:30 4.00 EVAL N DFAL 8,509.00 WEXIT MAKE UP NEW FIRING HEAD AND NE RUN IN HOLE ON SECOND ATTEMPT.Fl- PLUG SUCCESSF L _T: 19'M I.'""°--- 17:30 - 18:45 1.25 EVAL P WEXIT PULL OUT OF HOLE WITH E-LINE. 18:45 - 20:00 1.25 EVAL P WEXIT PERFORM 3500 PSI 9 5/8"CASING TEST FOR 30 CHARTED MINUTES WITH 8 BBLS OF 8.5 PPG SEAWATER. -0 PSI LOST IN FIRST 15 MINUTES -0 PSI LOST IN SECOND 15 MINUTES -TOTAL OF 0 PSI LOST IN 30 MINUTE TEST -BLED BACK 8 BBLS 20:00 - 20:45 , 0.75 STWHIP P WEXIT RIG DOWN E-LINE.BLOW DOWN KILL LINE. 20:45 - 21:30 0.75 STWHIP P . WEXIT INSTALL 9 1/8"WEAR RING.EXPEDITE WHIPSTOCK COMPONENTS TO RIG FLOOR. 21:30 - 23:30 2.00 STWHIP P WEXIT MAKE UP WHIPSTOCK BHA. 23:30 - 00:00 0.50 STWHIP P ■ WEXIT PERFORM SHALLOW HOLE TEST ON MWD. TEST-GOOD. -420 GPM,500 PSI Printed 9/2/2010 2:00:46PM North America-ALASKA-BP Page 3 of 13 Operation Summary Report Common Well Name:C-28 AFE No Event Type:RE-ENTER-ONSHORE(RON) Start Date:7/11/2010 End Date:7/28/2010 X3-00VVP-C(2,259,032.00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.:DOYON 141 Spud Date/Time:3/12/2002 12:00:00AM Rig Release:7/30/2010 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:C-28B @65.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 7/15/2010 00:00 - 10:30 10.50 STWHIP P WEXIT SINGLE IN HOLE WITH THE WINDOW MILLING ASSEMBLY ON 4"DP FILLING THE PIPE EVERY 30 STANDS. 550 GPM WITH 2400 PSI. KICK WHILE TRIPPING DRILL HELD AT 0530 WITH TED KRUGER'S CREW. 10:30 - 11:00 0.50 STWHIP P WEXIT OFFLOAD 160 BBLS OF 8.5 PPG SEAWATER FROM ACTIVE PIT TO MAKE ROOM TO TAKE ON MORE 10.5 PPG LSND MILLING FLUID. 11:00 - 12:00 1.00 STWHIP P WEXIT SINGLE IN THE HOLE WITH THE WINDOW MILLING ASSEMBY ON 4"DP FROM 7887'TO 8419'. BREAK CIRCULATION AT 550 GPM WITH 2400 PSI. UP WT.165K/DOWN WT. 138K 12:00 - 13:00 1.00 STWHIP P WEXIT ORIENT WHIPSTOCK TO 75 DEGRFES RIGHT , OF HIGH SIDE WHILE CIRCULATING AT 550 GPM WITH 2400 PSI. 13:00 - 14:15 1.25 STWHIP P WEXIT SINGLE IN THE HOLE TO 8482'AND BREAK CIRCULATION AT 550 GPM WITH 2400 PSI. ORIENT THE WHIPSTOCK TO 75 DEGREES RIGHT OF HIGH SIDE. CONTINUE IN THE HOLE TO THE EZSV AT 8508'. 4FT nnwN 13K AND SEE INDICATION OF ANCHOR IS SET.NO OVER PULL. BHA STARTED MOVING AT WHILE PICKING UP AT 165K. SET DOWN 20K ON THE WHIPSTOCK. PICK UP TO UP WT, BHA MOVING,NO OVER PULL. DISCUSS WITH ANCHORAGE TEAM,LINE UP AND SLACK OFF TO CONFIRM ORIENTATION OF WHIPSTOCK,ATTEMPT TO ROTATE,TOP DRIVE STALL WITH 10K TQ. DECISION IS TO MOVE AHEAD WITH MILLING OPERATIONS. 14:15 - 15:15 1.00 STWHIP N DFAL WEXIT ATTEMPT TO CONFIRM WHIPSTOCK IS SET AND MILL IS SHEARED OFF. BEGAN ROTATION AND SET 5K DOWN ON WHIPSTOCK AND STALLED OUT THE TOP DRIVE. RELEASED THE TORQUE AND ATTEMPTED SURVEY TO 75 DEGREES RIGHT. ATTEMPTED THIS PROCESS 2 MORE TIMES AND RECEIVED DIFFERENT SURVEYS EVERYTIME. DISCUSSED WITH ANCHORAGE TEAM AND DECISION WAS MADE TO MOVE FORWARD AND SET STORM PACKER FOR NEXT OPERATION. 15:15 - 16:45 1.50 WHSUR N SFAL WEXIT PICK UP SINGLE AND PULL OUT OF HOLE RACKING BACK STANDS TO 8263'. MAKE UP CROSSOVER AND 9-5/8"STORMPACKER. RUN IN THE HOLE TO SET THE PACKER AT 187'. TEST TO 250 PSI FOR 5 MINUTES THEN 1000 PSI FOR 10 MINUTES. 0 PSI LOST DURING FIRST 250 PSI TEST AND 0 PSI LOST DURING 10 MINUTE 1000 PSI TEST. 16:45 - 19:00 2.25 WHSUR N SFAL WEXIT MAKE UP WEAR RING PULLER AND PULL THE WEAR RING. BOLDS AND BROKE LDS. CALL ANCHORAGE TEAM TO DISCUSS THE CURRENT SITUATION. DECISION WAS MADE TO RILDS,PLACE A BLANK WHERE THE BROKEN LDS WAS LOCATED AND CONTINUE ON WITHOUT CHANGING PACK-OFF. 19:00 - 19:30 0.50 WHSUR N SFAL WEXIT RELEASE STORM PACKER,PULL IT TO THE RIG FLOOR AND LAY DOWN. Printed 9/2/2010 2:00:46PM North America-ALASKA-BP Page 4 of 13 Operation Summary Report Common Well Name:C-28 AFE No Event Type:RE-ENTER-ONSHORE(RON) Start Date:7/11/2010 End Date:7/28/2010 1X3-00VVP-C(2,259,032.00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.:DOYON 141 Spud Date/Time:3/12/2002 12:00:00AM Rig Release:7/30/2010 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:C-28B @65.29ft(above Mean Sea Level) Date From-To Hrs Task Code I NPT NPT Depth Phase Description of Operations (hr) (ft) 19:30 - 22:00 2.50 STWHIP P WEXIT RUN IN THE HOLE TO 8470'. DISPLACE THE WELL FROM 8.5 PPG SEAWATER TO 10.5 PPG LSND AT 530 GPM WITH 1790 PSI ICP/ 2400 PSI FCP. MUD WT IN AND OUT 10.5 PPG 22:00 - 22:30 0.50 STWHIP P WEXIT PICK UP A STAND OF DRILL PIPE. ESTABLISH SLOW PUMP RATES. TAG UP ON f. WHIPSTOCK 8507'AND SLACK OFF 50K TWICE. NO ADDITIONAL SHEAR, INDICATIONS OF MILL SLIDING ONTO WHIPSTOCK. 22:30 - 00:00 1.50 STWHIP P WEXIT MILL WINDOW FROM 8487'TO 8489'. 80 RPM AT 400 GPM WITH 1620 PSI. UP WT.160 K/ DOWN WT.133K/ROT.WT.147K WITH 4K TQ OFF/5-10K TW ON. 7/16/2010 j 00:00 - 12:00 12.00 STWHIP P WEXIT CONTINUE TO MILL WINDOW FROM 8489'TO 8516'MD. 80 RPM AT 410 GPM WITH 1650 PSI. TQ 5-12K.MAX WOB=40K. -DECREASE IN ROP WHILE MILLING FORMATION OUT OF WINDOW. -RECOVERED 195 LBS METAL CUTTINGS -PUMP 3-30 BBL HIGH VIS SUPER SWEEPS AND 1-30 BBL NUT PLUG SWEEP WHILE MILLING AND SAW INCREASED AMOUNT OF VINGS AND TORQUE LEVEL OUT. TOW-8,487'MD OW-8,504' 112:00 - 19:00 7.00 STWHIP P WEXIT CONTINUE TO MILL NEW FORMATION FROM 8516'TO 8528'MD. 110 RPM AT 270 GPM WITH 1250 PSI. TQ 5-6K.PUW 160K,SOW 135K,ROT 147K. WORK MILLS THROUGH WINDOW WHILE: PUMPING AND ROTATING;PUMPING AND NO ROTATING;NO PUMPS AND NO ROTATING 19:00 - 21:00 2.00 STWHIP P WEXIT PUMP 30 BBL SUPER SWEEP.CIRCULATE 2 SURFACE TO SURFACE VOLUMES. -465 GPM,2600 PSI -80 RPM,TQ 5K MUD WEIGHT IN/OUT 10.4+PPG -RECORD SLOW PUMP RATES 21:00 - 22:00 1.00 i STWHIP P WEXIT PERFORM LEAK OFF TEST. -8,487'MD/6,928'TVD,10.4+PPG MW -800 PSI SURFACE PRESSURE OBTAINED, 12.72 EMW -LOT CHARTED ON RECORDER,HELD FOR 10 MIN MONITOR WELL-STATIC.PUMP DRY JOB. 22:00 - 00:00 2.00 STWHIP P WEXIT PULL OUT OF HOLE ON 4"DP STANDS FROM 8,487'MD TO 4,857'MD. 7/17/2010 00:00 - 02:00 2.00 STWHIP P WEXIT PULL OUT OF HOLE WITH WINDOW MILLING ASSEMBLY FROM 4,857'MD TO 366'MD. _ 02:00 - 04:30 2.50 STWHIP P WEXIT LAY DOWN WINDOW MILLING BHA#1. -UPPER MILL IN FULL GAUGE -STARTER MILL 1/4"UNDER GAUGE FIRE DRILL AT 02:00,CRT 180 SEC Printed 9/2/2010 2:00:46PM North America-ALASKA-BP Page 5 of 13 Operation Summary Report Common Well Name:C-28 AFE No Event Type:RE-ENTER-ONSHORE(RON) Start Date:7/11/2010 End Date:7/28/2010 X3-00VVP-C(2,259,032.00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.:DOYON 141 Spud Date/Time:3/12/2002 12:00:00AM Rig Release:7/30/2010 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:C-28B @65.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 04:30 - 06:00 1.50 DRILL P WEXIT PULL WEAR BUSHING AND FLUSH OUT THE STACK AND FLOW LINES. INSTALL THE WEAR BUSHING(9.25"ID) 06:00 - 06:45 0.75 DRILL P WEXIT CLEAN AND CLEAR THE FLOOR. PREPARE TO PICK UP 8.5"DRILLING BHA#1. 06:45 - 08:45 2.00 DRILL P WEXIT MAKE UP 8.5"DRILLING BHA CONSISTING OF THE FOLLOWING. -8.5"PDC BIT SERIAL#127833 -7"MOTOR WTIH 1.5 DEGREE BEND -NON-MAG FLOAT SUB -NON-MAG DM HOC -NON-MAG SMART STAB -NON-MAG DGR/EWR/PWD/HCIM -NON-MAG TM HOC -NON-MAG ORIENTING SUB UBHO -NON-MAG FLEX DRILL COLLAR _ 08:45 - 09:30 0.75 DRILL P WEXIT UPLOAD THE MWD ON THE RIG FLOOR. 09:30 - 11:00 1.50 DRILL P WEXIT CONTINUE MAKING UP 8.5"DRILLING BHA. -(2)NON-MAG FLEX DRILL COLLARS -(3)5"X 3"HWDP -DUAL ACTING HYDRAULIC JAR -(11)5"X3"HWDP -X-OVER SUB SHALLOW TEST MWD WITH 400 GPM AND 700 PSI. 11:00 - 14:30 3.50 DRILL P WEXIT SINGLE IN WITH 4"DRILL PIPE FROM THE SHED TO 1200',PICK UP THE GHOST REAMER,AND CONTINUE TO SINGLE IN TO 4685'. FILLED THE PIPE AT 2521'. 14:30 - 16:00 1.50 DRILL P WEXIT RUN IN THE HOLE ON STANDS OF 4"DRILL PIPE FROM 4685'TO 8256'. FILLING THE PIPE AT 5342'AND 8256'. HELD KICK WHILE TRIPPING DRILL WITH WILLIAMS'CREW. 16:00 - 17:00 1.00 DRILL P WEXIT SLIP AND CUT 52'OF DRILLING LINE. 17:00 - 17:30 0.50 DRILL P WEXIT SERVICE AND INSPECT THE TOP DRIVE, DRAW WORKS AND RIG FLOOR EQUIPMENT. 17:30 - 20:00 2.50 DRILL P WEXIT MADD PASS FROM 8300'TO 8528'AT 180 FT/HR TO TIE-IN TO THE ORIGINAL WELLBORE SURVEYS. ORIENT THE BHA TO 75 DEGREES RIGHT TO EXIT THE WINDOW. NO PROBLEMS. 20:00 - 00:00 4.00 DRILL P INT1 DRILL FROM 8528'TO 8674'. -UPWT.158K/ROT WT.142K/DOWN WT. 125K -80 RPM WITH TQ OF 6K ON/5K OFF -480 GPM WITH 2250 PSI OFF/2550 PSI ON • -PUMP 30 BBL MEDIUM NUT PLUG AND SAP SWEEP TO HELP PREVENT BIT BALLING. -CALC.ECD 11.01 PPG ACT ECD 11.03 PPG -MUD WT.IN AND OUT 10.5 PPG Printed 9/2/2010 2:00:46PM North America-ALASKA-BP Page 6 of 13 Operation Summary Report Common Well Name:C-28 AFE No Event Type:RE-ENTER-ONSHORE(RON) Start Date:7/11/2010 End Date:7/28/2010 X3-00VVP-C(2,259,032.00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.:DOYON 141 Spud Date/Time:3/12/2002 12:00:00AM Rig Release:7/30/2010 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:C-28B©65.29ft(above Mean Sea Level) Date From-To Hrs Task I Code NPT NPT Depth Phase Description of Operations (hr) _ (ft) 7/18/2010 00:00 - 12:00 12.00 DRILL P INT1 DIRECTIONALLY DRILL AHEAD FROM 8674' TO 9379'. -UP WT.172K/ROT WT.154K/DOWN WT. 135K -100 RPM WITH TO OF 7K ON/6K OFF -510 GPM WITH 2800 PSI OFF/3200 PSI ON -PUMP 30 BBL MEDIUM NUT PLUG AND SAP SWEEP EVERY OTHER STAND TO HELP PREVENT BIT BALLING. -CALC.ECD 10.87 PPG ACT ECD 11.30PPG -MUD WT.IN AND OUT 10.5 PPG 12:00 - 00:00 12.00 DRILL P INT1 DIRECTIONALLY DRILL AHEAD FROM 9379' TO 10227'. -UP WT.180K/ROT WT.162K/DOWN WT. 143K -100 RPM WITH TQ OF 7K ON/5K OFF -530 GPM WITH 3350 PSI OFF/3550 PSI ON -ART 8.51,AST 5.76,ADT 14.27 -CALC.ECD 10.89 PPG ACT ECD 11.04 PPG -MUD WT.IN AND OUT 10.5 PPG 19:30 UNANNOUNCED KICK WHILE DRILLING DRILL 7/19/2010 00:00 - 02:15 2.25 DRILL P INT1 nIRPCTIONAI I Y nRll L AHEAD FROM 10227' TO TD AT 10341'. /N -UP WT.180K/ROT WT.162K/DOWN WT. 143K -100 RPM WITH TQ OF 7K ON/5K OFF -530 GPM WITH 3350 PSI OFF/3550 PSI ON -CALC.ECD 10.77 PPG ACT ECD 11.07 PPG -ART 1.35,AST.40,ADT-1.75 -MUD WT.IN AND OUT 10.5 PPG 02:15 - 04:45 2.50 DRILL P INT1 CIRCULATE A BOTTOMS UP FOR SAMPLES TO CONFIRM TD. PUMP A 30 BBL HI-VIS SWEEP AND CIRCULATE A SURFACE TO SURFACE VOLUME. -530 GPM,3450 PSI 04:45 - 06:15 1.50 DRILL P INT1 PERFORM WIPER TRIP TO GHOST REAMER DEPTH AT TD.PULL ON ELEVATORS TO 9,100'WITH NO PROBLEMS. -PUW 182K,SOW 125K 06:15 - 07:00 0.75 DRILL P INT1 RUN IN HOLE TO 10,323'WITH NO PROBLEMS. 07:00 - 08:30 1.50 DRILL P INT1 WASH DOWN TO TD AT 10,341'.NO FILL ON BOTTOM.PUMP 30-BBL HI-VIS SWEEP. CIRCULATE SURFACE TO SURFACE VOLUME. 25%INCREASE IN CUTTINGS WITH RETURN OF SWEEP.CONTINUE TO CIRCULATE UNTIL SHAKERS CLEAN UP. -530 GPM,3400 PSI -100 RPM,6K TO _ 08:30 - 10:45 2.25 DRILL P INT1 PULL OUT OF HOLE ON ELEVATORS FROM 10,341 TO INSIDE WINDOW AT 8,444'WITH NO PROBLEMS. 10:45 - 12:00 1.25 DRILL P INT1 CIRCULATE BOTTOMS UP WHILE ROTATING AND RECIPROCATING. -600 GPM,3600 PSI -30 RPM,4K TQ 12:00 - 16:00 4.00 DRILL P INT1 PULL OUT OF HOLE ON 4"DP RACKING BACK STANDS FROM 8,444'TO 634'. -PUMP DRY JOB AND DROP RABBIT Printed 9/2/2010 2:00:46PM North America-ALASKA-BP Page 7 of 13 Operation Summary Report Common Well Name:C-28 AFE No Event Type:RE-ENTER-ONSHORE(RON) Start Date:7/11/2010 End Date:7/28/2010 X3-00VVP-C(2,259,032.00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.:DOYON 141 Spud Date/Time:3/12/2002 12:00:00AM Rig Release:7/30/2010 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:C-28B @65.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 16:00 - 18:00 2.00 DRILL P INT1 RACK BACK 5"HWDP AND JARS IN DERRICK. LAY DOWN INTERMEDIATE DRILLING BHA. -BIT GRADE:1-1-CT-G-X-I-HC-TD 18:00 - 18:45 0.75 DRILL P INT1 CLEAN AND CLEAR RIG FLOOR. 18:45 - 19:45 1.00 BOPSUR P INT1 CHANGE UPPER RAMS IN BOP FROM 3.5"X 6" VARIABLES TO 7 19:45 - 21:15 1.50 BOPSUR P INT1 REMOVE WEAR RING AND INSTALL TEST PLUG.TEST 7"RAMS WITH 7"TEST JOINT TO A LOW 250 PSI/HIGH 3500 PSI. -EACH TEST CHARTED AND HELD FOR 5 MINUTES. -RE-INSTALL WEAR RING AFTER TESTS 21:15 - 22:30 1.25 CASING P INT1 RIG UP TO RUN 7"LINER. 22:30 - 23:00 0.50 CASING P INT1 PICK UP AND RIH WITH 7"SHOE TRACK. -BAKER LOK'D ALL BTC THREAD CONNECTIONS -- -FILLED PIPE CHECKED FLOATS-O.K. 23:00 - 00:00 1.00 CASING P INT1 RIH PICKING UP 7"26#L-80 VAM TOP HC CASING FROM PIPE SHED 1 X 1. -TORQUE TURNED ALL CONNECTIONS. -JET LUBE SEAL GUARD THREAD COMPOUND ON ALL CONNECTIONS CENTRALIZERS ON SHOE TRACK ONLY 7/20/2010 00:00 - 02:00 2.00 CASING, P INT1 RIH PICKING UP 7"26#L-80 VAM TOP HC CASING FROM PIPE SHED 1 X 1. -TORQUE TURNED ALL CONNECTIONS. -JET LUBE SEAL GUARD THREAD COMPOUND ON ALL CONNECTIONS -CENTRALIZERS ON SHOE TRACK ONLY 02:00 - 03:00 1.00 CASING P INT1 FILL PIPE,SERVICE TOP DRIVE AND DRAW WORKS,HELD SPILL DRILL FOLLOWED BY A KICK DRILL. HELD PAR ABOUT BOTH DRILLS AND THE POTENTIAL OF HAVING MULTIPLE ISSUES AT ONCE. 03:00 - 04:30 1.50 CASING N SFAL 1,400.00 INT1 UNABLE TO TORQUE TURN JOINTS. TROUBLE SHOOT TORQUE TURN EQUIPMENT.REPLACE CASING TONG COMPONENTS AND TORQUE TURN COMPUTER. 04:30 - 05:45 1.25 CASING P INT1 CONTINUE TO RUN IN HOLE PICKING 7"26# L-80 VAM TOP HC CASING FROM PIPE SHED 1X1. -TORQUE TURNED ALL CONNECTIONS. -JET LUBE SEAL GUARD THREAD COMPOUND ON ALL CONNECTIONS -48 TOTAL JTS RAN 05:45 - 07:00 1.25 CASING P INT1 P/U BAKER 7"X 9-5/8""HMC"LINER HANGER AND"HRD"ZXP LINER TOP PACKER ASSEMBLY WITH RUNNING TOOL.M/U XT-39 BOX CROSS OVER SUB.P/U WEIGHT 71K, S/O WEIGHT 68K. 07:00 - 07:15 0.25 CASING P INT1 BREAK CIRCULATION AND CIRCULATE A BOTTOMS UP AT 3 BPM WITH 150 PSI STAGING UP TO 4 BPM WITH 160 PSI. UP WT. 75K/5/0 WT.68K Printed 9/2/2010 2:00:46PM North America-ALASKA-BP Page 8 of 13 Operation Summary Report Common Well Name:C-28 AFE No Event Type:RE-ENTER-ONSHORE(RON) Start Date:7/11/2010 End Date:7/28/2010 X3-00VVP-C(2,259,032.00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.:DOYON 141 Spud Date/Time:3/12/2002 12:00:00AM Rig Release:7/30/2010 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:C-28B @65.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 07:15 - 14:30 7.25 CASING P INT1 RIH FROM 2113'TO 8410'WITH 7"LINER ON 4" XT-39 DRILLPIPE TO WINDOW. RIH AT 1 MINUTE PER STAND,FILL PIPE EVERY 10 STANDS.RECORD UP AND DOWN WEIGHT EVERY 10 STANDS.UP WT.140K/ DOWN WT.108K CIRCULATE 1.5 ANNULAR VOLUMES AT WINDOW. -2.5 BPM WITH 280 PSI,3.5 BPM WITH 380 PSI,5 BPM WITH 550 PSI 14:30 - 16:00 1.50 CASING P INT1 RIH FROM 8410'TO 10292'WITH 7"LINER ON 4"XT-39 DRILLPIPE INTO OPEN HOLE RIH AT 1 MINUTE PER STAND. RECORD UP AND DOWN WEIGHT EVERY 10 STANDS.UP WT. 185K/S/O WT.122K 16:00 - 16:30 0.50 CEMT P INT1 PICK UP A SINGLE AND MAKE UP TO TOP OF 4"DP. MAKE UP BAKER CEMENT HEAD.PICK UP CEMENT HEAD AND MAKE UP TO SINGLE JOINT OF 4"XT-39 DP. RIH AND TAG UP AT 10341',PICK UP 2'AND SET SHOE AT 10339'. 16:30 - 21:00 4.50 CEMT P INT1 STAGE UP PUMP TO 5-BPM WITH 900 PSI IN 1-BPM INCREMENTS. HELD PJSM WITH ALL CREW AND THIRD PARTY PERSONNEL TO REVIEW HAZARDS AND PUMPING PLAN. CIRCULATED HOLE ANNULAR VOLUME.UP WT.185K/S/O WT/122K. 21:00 - 22:00 1.00 CEMT P INT1 CEMENT 7"LINER IN PLACE AS FOLLOWS: -BATCH MIX 12.5 PPG MUD PUSH -BATCH MIX 15.8 PPG CLASS G CEMENT -PUMP 5 BBLS OF 12.5 PPG MUD PUSH AND PT LINES TO 4500 PSI. C/1"4- -PUMP 20 BBLS OF 12.5 PPG MUD PUSH AT 5 BPM WITH 490 PSI. / -PUMP 45 BBLS OF 15.8 PPG CLASS G CEMENT AT 4.7 BPM WITH 1200 PSI ICP AND L� 900 PSI FCP. -KICK OUT DART WITH 5 BBLS OF WATER. -DISPLACE WITH THE RIG AT 7 BPM WITH 380 PSI TO CATCH THE CEMENT. -ONCE CEMENT IS CATCH SLOW PUMPS TO 5 BPM WITH 610 PSI. -SLOW DOWN TO 3 BPM BEFORE BUMPING PLUG. -BUMP PLUG AT 152 BBLS DISPLACED AND PRESSURE UP TO 4170 PSI. -SLACK OFF 50K TO SET THE HANGER. CEMENT INFO: -45 BBLS(218 SX)OF 15.8 PPG CLASS G CEMENT -MIX WATER RATIO 5.105 GAL/SK -YIELD 1.16 CU.FT/SK -CIP 22:00 22:00 - 22:30 0.50 CASING P INT1 BLEED PRESSURE OFF,CHECK FLOATS, FLOATS HELD. PICK UP TO 135K+7',SLACK OFF TO SET DOWN 50K,SET LINER TOP PACKER,ROTATE AT 10 RPM WITH A TQ OF 4K,BLOW DOWN AND TAKE OFF CEMENT HOSE. PRESSURE UP TO 1000 PSI WITH THE TOP DRIVE. PICK UP OUT OF THE LINER TOP PACKER ASSEMBLY. Printed 9/2/2010 2:00:46PM North America-ALASKA-BP Page 9 of 13 Operation Summary Report Common Well Name:C-28 AFE No Event Type:RE-ENTER-ONSHORE(RON) Start Date:7/11/2010 End Date:7/28/2010 X3-00VVP-C(2,259,032.00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.:DOYON 141 Spud Date/Time:3/12/2002 12:00:00AM Rig Release:7/30/2010 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:C-28B©65.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 22:30 - 23:45 1.25 CEMT P INT1 CIRC ABOVE LINER TOP WHILE RECIPROCATING. 13.5 BPM WITH 2500 PSI. 23:45 - 00:00 0.25 CEMT P INT1 FLOW CHECK THE WELL. STATIC. 7/21/2010 00:00 - 01:30 1.50 CEMT P INT1 CHANGE OUT THE MOUSE HOLE,LAY DOWN THE CEMENT HEAD AND CROSSOVERS. BREAK OUT AND LAY DOWN THE 2 SINGLES ADDED TO THE STRING FOR LANDING THE [LINER ON DEPTH. 01:30 - 05:30 4.00 CEMT P INT1 PUMP DRY JOB.PULL OUT OF THE HOLE FROM 8320'AND LAY DOWN THE BAKER STINGER FROM THE LINER TOP PACKER ASSEMBLY. HELD KICK WHILE TRIPPING DRILL. 05:30 - 06:00 0.50 WHSUR P INT1 CLEAN AND CLEAR THE RIG FLOOR AND PREPARE TO CHANGE OUT THE TOP RAMS. Q �� 06:00 - 09:00 3.00 BOPSUR P INT1 C/O UPPER RAMS FROM 7"RAMS TO 3-1/2"X_ [� 7"VBR'S.PULL WEAR BUSHING AND INSTALL TEST PLUG.RUN IN LOCK DOWN SCREWS TO ENERGIZE SEAL ON TEST PLUG.TEST VBR'S TO 250 PSI LOW AND 3,500 PSI HIGH FOR 5 CHARTED MINUTES EACH.TEST WITH 4"AND 4-1/2"TEST JOINTS. 09:00 - 10:00 I 1.00 CASING P INT1 CLOSE BLIND/SHEAR RAMS AND TEST 9-5/8" X 7"CASING TO 250 PSI LOW AND 3,500 PSI HIGH.HOLD 3,500 PSI FOR 30 CHARTED MINUTES.GOOD TEST. TEST LOST 40 PSI IN FIRST 15 MINUTES AND 25 PSI IN SECOND 15 MINUTES. 10:00 - 10:30 0.50 DRILL P INT1 SEND DOWN HANDLING AND UNUSED EQUIPMENT FROM 7"LINER JOB,MOBLIZE 6-1/8"BHA COMPONENTS TO RIG FLOOR. • 10:30 - 12:00 1.50 DRILL P INT1 RIH WITH 5 STANDS OF 5"HWDP FROM THE DERRICK AND POOH LAYING DOWN. 12:00 - 13:00 1.00 DRILL P INT1 PICK UP AND MAKE UP 6.125"PRODUCTION BHA#1. -CONSISTS OF THE FOLLOWING: -6.125"TRICONE HTC EP7258 BIT -4.75"SPERRYDRILL LOBE 7/8-2.0 STG MOTOR -NON-MAG FLOAT SUB -NON-MAG INTEGRAL BLADE -NON-MAG 4.75"DM COLLAR -NON-MAG 4.75"SLIM PHASE 4 COLLAR -NON-MAG 4.75"ALD/CTN COLLAR -NON-MAG 4.75"TM COLLAR -NON-MAG FLEX COLLAR 13:00 - 14:30 1.50 DRILL P INT1 PLUG IN AND UPLOAD MWD 14:30 - 15:00 0.50 DRILL P INT1 SHALLOW HOLE TEST THE MWD. 15:00 - 15:30 0.50 DRILL P INT1 LOAD NUKE SOURCES. 15:30 - 16:00 0.50 DRILL P INT1 PICK UP AND MAKE UP THE REMAINING BHA COMPONENTS. -(2)NON-MAG FLEX COLLARS -WELL COMMANDER CIRC.SUB -X-OVER SUB -(3)4"X 2.5625"HWDP • -DUAL ACTING HYDRAULIC DRILLING JARS -(2) 4"X 2.5625"HWDP 16:00 - 16:15 0.25 DRILL P INT1 AARON MAKING UP THE BHA Printed 9/2/2010 2:00:46PM • North America-ALASKA-BP Page 10 of 13 Operation Summary Report Common Well Name:C-28 AFE No Event Type:RE-ENTER-ONSHORE(RON) Start Date:7/11/2010 ' End Date:7/28/2010 X3-00VVP-C(2,259,032.00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.:DOYON 141 Spud Date/Time:3/12/2002 12:00:00AM Rig Release:7/30/2010 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:C-28B @65.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 16:15 - 19:15 3.00 DRILL P INT1 RUN IN THE HOLE ON 4"DRILL PIPE OUT OF THE DERRICK. FILLED PIPE AT 3220',6500', AND 8010'. UP WT.144K/DOWN WT.106K HELD KICK WHILE TRIPPING DRILL. 19:15 - 20:30 1.25 DRILL P INT1 PICK UP 9.625"HES STORM PACKER AND SET PACKER AT 105'BELOW THE ROTARY, HANGING OFF THE DRILLING BHA TO PERFORM WELLHEAD WORK. PRESSURE TEST TO 250 PSI LOW FOR 5 MINUTES AND 1000 PSI HIGH FOR 10 MINUTES.10 PSI PRESSURE LOST DURING LOW TEST AND 0 PSI PRESSURE LOSS DOING HIGH TEST. 20:30 - 00:00 3.50 WHSUB P INT1 CAMERON ON LOCATION TO DRILL AND TAP, BROKEN LOCK DOWN SCREW. ALSO, CHANGE OUT THE OTHER LOCKDOWN SCREWS. 7/22/2010 00:00 - 01:00 1.00 WHSUR P INT1 CONTINUE TO DRILL OUT BROKEN LOCK DOWN SCREW AND REPLACE OTHER LOCKDOWN'SCREWS IN THE WELLHEAD. ONE LOCK DOWN SCREW INTERNALTHREADS DAMAGED,UNABLE TO REPLACED. INSTALLED BLANKING PLUG. 01:00 - 03:45 2.75 WHSUR P INT1 MAKE UP 9.625"PACK-OFF PULLING TOOL AND LATCH UP TO PACK-OFF. BACK OUT LOCKDOWN SCREWS. PULLED PACK-OFF FREE AT 5K. PICK UP NEW PACK-OFF AND RUN IN THE HOLE AND RUN IN LOCK DOWN SCREWS. INSTALL PLASTIC PACKING AND TEST TO 5000 PSI FOR 30 MINUTES. GOOD TEST NO PRESSURE LOST. 03:45 - 04:15 0.50 WHSUR P INT1 INSTALL WEAR BUSHING. 04:15 - 05:30 1.25 DRILL P INT1 SCREW INTO HES 9.625"STORM PACKER, RELEASE STORM PACKER,,ALLOW ELEMENTS TO RELAX AND PULL TO THE RIG FLOOR. LAY DOWN STORM PACKER AND CLEAN AND CLEAR THE FLOOR. 05:30 - 06:30 1.00 DRILL P INT1 RUN IN THE HOLE ON STANDS OF 4"DRILL PIPE FROM THE DERRICK TO 10,174'. TAG UP ON CEMENT STRINGER. 06:30 - 08:30 2.00 DRILL P INT1 WASH CEMENT FROM 10,147'TO 10,206'.TAG LANDING COLLAR AT 10,253'. 240 GPM,60 RPM. 08:30 10:00 1.50 DRILL P INT1 TEST 9 5/8"CASING,7"LINER TOP PACKER AND 7"LINER TO 3500 PSI FOR 30 MINUTES. GOOD TEST. TEST LOST 100 PSI IN FIRST 15 MINUTES AND 40 PSI IN SECOND 15 MINUTES. 10:00 - 10:45 0.75 DRILL P l INT1 DRILL LANDING COLLAR AT 10,253'. DRILL HARD CEMENT IN SHOE TRACT AND FLOAT COLLAR AT 10,294'. DRILL CEMENT TO 10,329'.240 GPM,2280 PSI,TQ 9K,60 RPM. 10:45 - 13:30 2.75 DRILL P INT1 DISPLACE MUD TO 8.6 PPG FLOW-PRO. PUMP 75 BBL WATER AND 35 BBL HIGH VIS SWEEP AHEAD OF NEW MUD 13:30 - 14:00 0.50 DRILL P INT1 DRILL SHOE TRACT CEMENT AND 7"SHOE AT 10,339' DRILL NEW HOLE TO 10,360' 14:00 - 14:45 0.75 DRILL P INT1 CIRCULATE BOTTOMS UP.PUMP RATE OF 240 GPM WITH 1,500 PSI.MUD WEIGHT 8.6 PPG IN AND 8.6 PPG OUT. Printed 9/2/2010 2:00:46PM North America-ALASKA-BP Page 11 of 13 Operation Summary Report Common Well Name:C-28 AFE No Event Type:RE-ENTER-ONSHORE(RON) Start Date:7/11/2010 End Date:7/28/2010 ;X3-00VVP-C(2,259,032.00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.:DOYON 141 Spud Date/Time:3/12/2002 12:00:00AM Rig Release:7/30/2010 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:C-28B©65.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth I Phase Description of Operations (hr) (ft) I 14:45 - 15:45 1.00 DRILL P PROD1 PERFORM FIT TO 10.03 PPG EMW.CURRENT MUD WEIGHT OF 8.6 PPG,TVD OF 8,472'. CLOSE TOP VBR'S AND PUMP DOWN THE DRILLSTRING AND THE KILL LINE.PUMP AT 1/2 BPM.PRESSURE UP TO 640 PSI,BLED DOWN TO 630 PSI AND STABLIZED AT 630 PSI.HELD 630 PSI FOR 10 MINUTES ON THE CHART. 15:45 - 00:00 8.25 DRILL P PROD1 DRILL AHEAD FROM 10360'TO 10605'. 6 BPM WITH 1600 PSI AT 75 RPM WITH 5K TQ. UP WT.170K/DOWN WT.138K/ROT WT.156K. MUD WT IN AND OUT 8.6+PPG 7/23/2010 00:00 - 12:30 12.50 DRILL P PROD1 DRILL AHEAD FROM 10605'TO 10923'. 6 BPM WITH 1600 PSI AT 75 RPM WITH 5K TQ. UP WT.175K/DOWN WT.140K/ROT WT.158K. MUD WT IN AND OUT 8.6 PPG HELD SPILL DRILL AT 04:00,CRT 120 SEC. 12:30 - 13:00 0.50 DRILL P PROD1 REPEAT SURVEY TO CONFIRM BUILD RATE. HAVING DIFFUCULTY MAINTAINING DOGLEG. DISCUSSED THE POSSIBILITY OF BIT WEAR. CONTINUING DRILLING WOULD RESULT IN 100%SLIDING. 13:00 - 14:15 1.25 DRILL P PROD1 POH.TO 7"SHOE.BACK REAM AT 80 RPM, 6.5 BPM,1750 PSI,5K TO,170 PU. DROP "CCV"CIRCULATING SUB BALL. OPEN SUB WITH 2500 PSI. 14.15 - 16 00 1.75 DRILL P PROD1 CIRCULATE THROUGH THE CCV AT 10 BPM 1070 PSI. RECIPROCATE PIPE,NO ROTATION. MUD WEIGHT IN AND OUT 8.6 PPG 16:00 - 19:00 3.00 DRILL P PROD1 PULLED OUT OF THE HOLE FROM 10330'TO 9986'. HOLE NOT TAKING PROPER HOLE FILL. PUMPED OUT OF THE HOLE AT 4 BPM WITH 450 PSI TO 8295'. 19:00 - 00:00 5.00 DRILL P PROD1 FLOW CHECK WELL. STATIC. PUMP DRY JOB AND CONTINUE TO PULL OUT OF THE HOLE FROM 9986'TO 870'. DROPPED CCV CLOSING BALL AT 4 BPM CLOSING CCV AT 2000 PSI. CONTINUED OUT OF THE HOLE FROM 870'TO 142'. 7/24/2010 00:00 - 01:00 1.00 DRILL r P PROD1 RACK BACK HWDP,JARS,AND LAY DOWN 2 JTS.OF NON-MAG FLEX COLLARS. 01:00 - 02:00 1.00 DRILL P PROD1 PJSM.REMOVE RADIOACTIVE SOURCES, DOWN LOAD MWD TOOL. 102:00 - 02:30 0.50 DRILL P PROD1 BREAK OUT 6.125"EP7258 HTC BIT. WORN OUTSIDE GAUGE ROW AND 1-16" UNDERGAUGE. 02:30 - 03:00 0.50 DRILL P PROD1 CLEAN AND CLEAR THE FLOOR. Printed 9/2/2010 2:00:46PM North America-ALASKA-BP Page 12 of 13 Operation Summary Report Common Well Name:C-28 AFE No Event Type:RE-ENTER-ONSHORE(RON) Start Date:7/11/2010 End Date:7/28/2010 X3-00VVP-C(2,259,032.00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.:DOYON 141 Spud Date/Time:3/12/2002 12:00:00AM Rig Release:7/30/2010 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:C-28B @65.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 03:00 - 04:30 1.50 DRILL P PROD1 PICK UP AND MAKE UP 6.125"PRODUCTION BHA#2. -CONSISTS OF THE FOLLOWING: -6.125"TRICONE HTC MXR18DX BIT -4.75"SPERRYDRILL LOBE 7/8-2.0 STG MOTOR 1.5 DEGREE BEND -NON-MAG FLOAT SUB NON-MAG INTEGRAL BLADE -NON-MAG 4.75"DM COLLAR -NON-MAG 4.75"SLIM PHASE 4 COLLAR -NON-MAG 4.75"ALD/CTN COLLAR -NON-MAG 4.75"TM COLLAR -NON-MAG FLEX COLLAR _ PLUG IN AND UPLOAD MWD TOOL. 04:30 - 05:30 1.00 DRILL P PROD1 SHALLOW TEST MWD AT 200 GPM WITH 700 PSI. PJSM,LOAD RADIOACTIVE SOURCES. PICK UP THE FOLLOWING COMPONENTS OF THE BHA: -(2)NON-MAG FLEX COLLARS -WELL COMMANDER CIRC.SUB -X-OVER SUB -(3)4"X 2.5625"HWDP -DUAL ACTING HYDRAULIC DRILLING JARS -(2) 4"X 2.5625"HWDP 05:30 - 11:30 6.00 DRILL P PROD1 RUN IN THE HOLE TO 10268'. UP WT.135K/ DOWN WT.118K. HELD H2S DRILL,CRT 94 SEC. 11:30 - 13:00 1.50 DRILL P PROD1 SLIP AND CUT 65'OF DRILLING LINE. SERVICE TOP DRIVE,DRAW WORKS,AND MISC.EQUIPMENT ON THE RIG FLOOR. 13:00 - 13:15 0.25 DRILL P PROD1 RUN IN HOLE FROM 10268'TO 10855'. 13:15 - 13:30 0.25 DRILL P PROD1 WASH DOWN AND ORIENT HIGH SIDE FROM 10855'TO 10923'. 240 GPM WITH 1600 PSI. UP WT.160K/DOWN WT.125K 13:30 - 00:00 10.50 DRILL P PROD1 DRILL FROM 10' 3'TO 11243',270 GPM WITH 1900 PSI OFF/2000 PSI ON. UP WT.172K/ DOWN WT.133K/ROT.WT.155K ROTATING AT 75 RPM WITH 5K TQ OFF/6K TQ ON. �n 7/25/2010 00:00 - 14:45 14.75 DRILL P PROD1 DRII I FROM 11243'TO TD OF 11864". 270 V GPM WITH 1900 PSI OFF/2000 PSI ON. UP WT.175K/DOWN WT.128K/ROT.WT.150K ROTATING AT 80 RPM WITH 5K TQ OFF/6K TQ ON. HELD UNANNOUNCED KICK WHILE DRILLING DRILL,CRT 62 SEC. 14:45 - 17:45 3.00 DRILL P PROD1 CIRCULATE 2 BOTTOMS UP AT 270 GPM WITH 1925 PSI. UP WT.170K/DOWN WT. 132K/ROT.WT.150K. 100 RPM WITH 5K TQ. SAW AN INCREASE IN CUTTINGS OVER SHAKERS FROM FIRST BOTTOMS UP AND MINIMAL RETURNS FROM SECOND BOTTOMS UP. 17:45 - 00:00 6.25 EVAL P PROD1 MADD PASS FROM 11864'TO 10707'. MAXIMUM PULLING SPEED OF 300'/HR. PUMPING AT 270 GPM WITH 1925 PSI. 100 RPM WITH 5K TQ. UP WT.175K/DOWN WT. 140K/ROT.WT.155K. • Printed 9/2/2010 2:00:46PM North America-ALASKA-BP Page 13 of 13 Operation Summary Report Common Well Name:C-28 AFE No Event Type:RE-ENTER-ONSHORE(RON) Start Date:7/11/2010 End Date:7/28/2010 X3-00VVP-C(2,259,032.00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.:DOYON 141 Spud Date/Time:3/12/2002 12:00:00AM Rig Release:7/30/2010 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:C-28B @65.29ft(above Mean Sea Level) Date I From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 7/26/2010 00:00 - 01:30 1.50 EVAL P PROD1 MADD PASS FROM 10707'TO 10339'. MAXIMUM PULLING SPEED OF 300'/HR. PUMPING AT 270 GPM WITH 1925 PSI. 100 RPM WITH 5K TQ. UP WT.175K/DOWN WT. 140K/ROT.WT.155K. 01:30 - 05:00 3.50 DRILL P PROD1 PUMP OUT OF THE HOLE FROM 10339'TO 10258'. DROP BALL TO OPEN CCV,OPENED AT 2000 PSI. CONTINUE PUMPING OUT OF THE HOLE FROM 10258'TO THE 7"LINER TOP AT 8327'. 05:00 - 06:30 1.50 DRILL P PROD1 CIRCULATE BOTTOMS UP AT THE 7"LINER TOP.420 GPM,1000 PSI.NO ROTATION. SHAKERS CLEAN 06:30 - 07:00 0.50 DRILL P PROD1 MONITOR WELL.STATIC.POH FROM 8543'TO 8295'. HOLE FULL CORRECT ON TRIP TANK. PUMP DRY JOB 07:00 - 10:00 3.00 DRILL P PROD1 POH.FROM 8295'TO 398'.TOP OF BHA. MONITOR WELL.HOLE FILL CORRECT ON TRIP TANK. MUD WEIGHT IN AND OUT 8.8 PPG HELD KICK WHILE TRIPPING DRILL. CRT 1 j — — MINUTE.34 SECONDS 10:00 - 12:00 2.00 I DRILL P PROD1 LAY DOWN BHA. HWDP,JARS AND TOOLS. 12:00 - 12:15 0.25 DRILL P PROD1 PJSM ON HANDLING RADIOACTIVE SOURCES,REMOVE THE RADIOACTIVE SOURCES FROM THE BHA. 12:15 - 12:45 0.50 DRILL P PROD1 DOWN LOAD MWD 12:45 - 14:00 1.25 DRILL P PROD1 LAYDOWN THE REMAINING PIECES OF THE BHA. Printed 9/2/2010 2:00:46PM North America-ALASKA-BP Page 1 of 6 Operation Summary Report Common Well Name:C-28 AFE No Event Type:COM-ONSHORE(CON) Start Date:7/28/2010 End Date:8/1/2010 X3-00VVP-C(1,363,109.00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.:DOYON 141 Spud Date/Time:3/12/2002 12:00:OOAM Rig Release:7/30/2010 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:C-28B @65.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) _ 7/26/2010 14:00 - 14:15 0.25 CASING P RUNPRD CLEAN AND CLEAR THE RIG FLOOR AND PREPARE TO RUN 4.5"LINER. 14:15 - 15:00 0.75 CASING P RUNPRD RIG UP TO RUN 4.5"LINER. 15:00 - 17:45 2.75 CASING P RUNPRD MAKE UP 4.5"LINER AS FOLLOWS: -HES FLOAT SHOE -1 JT 4-1/2",12.6#,L80 IBT-M HES FLOAT COLLAR -1 JT 4-1/2",12.6#,L80 IBT-M -BAKER LANDING COLLAR -1 JT 4-1/2",12.6#,L80 IBT-M -37 JTS 4-1/2",12.6#,L80 IBT-M (#4-#40) -4 1/2"12.6#L80,IBT PUP JT. -5 BTC-M X 4.5"IBT XO -7"X 5"BAKER FLEX LOCK LINER HANGER -7"X 5" HRD-E ZXPN PACKER. WITH 11.12'X 5.25"PBR CENTRALIZERS ARE AS FOLLOWS: -JTS.#1 2 CENTRALIZER WITH STOP AT MID JOINT. -JTS.#2 2 CENTRALIZER WITH STOP AT MID JOINT. -JTS.#3 THRU 35 2 PER JOINT,STOP RING MID JOINT -JTS.#36 THRU 40 NO CENTRALIZERS ALL JTS.ABOVE THE BAKER LANDING COLLAR ARE BAKER LOK'T AND ALL OTHER JTS UTILIZED BEST OF LIFE 2000. 17:45 - 18:15 0.50 CASING P RUNPRD PICKUP 1 STAND OF 4"DRILL PIPE AND CIRCULATE 50 BBLS AT 150 PSI @ 5 BPM. UP WT.50K/DOWN WT.52K 18:15 - 00:00 5.75 CASING P RUNPRD RUN IN HOLE WITH THE 4.5"LINER OF 4" DRILLPIPE FROM THE DERRICK to 10335'. CIRCULATE 126 BBLS AT 2.5 BPM WITH 400 PSI,3.5 BPM WITH 480 PSI,AND 4.25 BPM WITH 550 PSI. HELD KICK WHILE TRIPPING DRILL,CRT 138 SEC. 7/27/2010 00:00 - 01:30 1.50 CASING P RUNPRD RUN 4.5"LINER IN HOLE ON 4"DRILL PIPE AND TAG BOTTOM ON DEPTH AT 11864'. UP WT.161K/DOWN WT.124K 01:30 - 02:00 0.50 CEMT P RUNPRD RIG UP BAKER LINER CEMENT HEAD. 02:00 - 05:00 3.00 CEMT P RUNPRD RECIPROCATE WHILE CIRCULATING ON BOTTOM. 1.25 BPM WITH 420 PSI. STAGING UP TO 5 BPM WITH 890 PSI FCP. HOLD PJSM WITH RIG CREW, SCHLUMBERGER,CH2MHILL TRUCK PUSHER,BP WSL,AND MI SWACO HAND. SCHLUMBERGER BEGAN BATCHING UP CEMENT AT 04:20. Printed 9/2/2010 1:47:28PM North America-ALASKA-BP Page 2 of 6 Operation Summary Report Common Well Name:C-28 AFE No Event Type:COM-ONSHORE(CON) Start Date:7/28/2010 i End Date:8/1/2010 X3-00VVP-C(1,363,109.00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.:DOYON 141 Spud Date/Time:3/12/2002 12:00:00AM Rig Release:7/30/2010 Rig Contractor:DOYON DRILLING INC. UWI: r - Active Datum:C-28B @65.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 05:00 - 09:00 4.00 CEMT P RUNPRD CEMENT 4.5"LINER IN PLACE AS FOLLOWS: -BATCH MIX 11.5 PPG MUD PUSH -BATCH MIX 15.8 PPG CLASS G CEMENT -PUMP 5 BBLS OF 11.5 PPG MUD PUSH AND PT LINES TO 4800 PSI. -PUMP 20 BBLS OF 11.5 PPG MUD PUSH AT 4 BPM WITH 740 PSI. -PUMP 47 BBLS OF 15.8 PPG CLASS G CEMENT AT 4.7 BPM WITH 1100 PSI ICP AND 800 PSI FCP. -KICK OUT DART WITH 35 BBLS OF PERF PILL. -DISPLACE WITH THE RIG AT 8 BPM WITH 150 PSI TO CATCH THE CEMENT. -ONCE CEMENT IS CAUGHT SLOW PUMPS TO 5 BPM WITH 200 PSI. -LINER WIPER DART LATCHED AT 101 BBLS DISPLACED. -SLOW DOWN TO 3 BPM BEFORE BUMPING PLUG. -BUMP PLUG AT 125 BBLS DISPLACED AND PRESSURE UP TO 3300 PSI. -SLACK OFF 50K,PRESSURE UP TO 4100 PSI TO SET THE HANGER. BLEED OFF TO CHECK FLOATS. FLOATS HELD. -PICK UP 5',SLACK OFF,PICK UP 6',SLACK OFF,PICK UP 7',SLACK OFF -PRESSURE UP TO 4500 PSI,SLACK OFF 35K -BLEED OFF PRESSURE AND SLACK OFF 35K PICKUP5' -SLACK OFF 45K AND HAVE POSITIVE VERIFICATION OF SHEARING OF THE RUNNING TOOL -PICK UP 5' -ROTATE SLOWLY SITTING DOWN 30K -PICK UP 5' -STOP ROTATION AND SET DOWN 30K. -VERIFICATION THE PACKER IS SET -PICK UP OUT OF TIE BACK RECEPTICLE AND CIRCULATE OUT CEMENT AND MUD -9 BBLS OF CEMENT BACK TO SURFACE. CEMENT INFO: -47 BBLS(226 SX)OF 15.8 PPG CLASS G CEMENT -MIX WATER RATIO 5.226 GAL/SK -YIELD 1.17 CU.FT/SK -CIP 06:26 09:00 - 10:30 1.50 CEMT P RUNPRD MONITOR WELL-STATIC.DISPLACE HOLE TO SEAWATER AT 590 GALLONS PER J MINUTE,200 PSI. 10:30 - 13:00 2.50 CEMT P RUNPRD SHUT DOWN RIG FOR HOPKINS SAFETY MEETING WITH BOTH CREWS. -DISCUSS LIFTING PROCEDURES,CHAIN AND SLING QUALITY CONTROL 13:00 - 16:45 3.75 CEMT P RUNPRD PULL OUT OF HOLE RACKING BACK 4"DRILL PIPE STANDS FROM 10,180'MD TO LINER RUNNING TOOL. -KICK WHILE TRIPPING DRILL(D1),CREW RESPONSE TIME 176 SEC 16:45 - 17:15 0.50 CEMT P RUNPRD BREAK LINER RUNNING TOOL AND LAY DOWN. Printed 9/2/2010 1:47:28PM North America-ALASKA-BP Page 3 of 6 Operation Summary Report Common Well Name:C-28 AFE No Event Type:COM-ONSHORE(CON) Start Date:7/28/2010 End Date:8/1/2010 X3-00VVP-C(1,363,109.00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.:DOYON 141 Spud Date/Time:3/12/2002 12:00:00AM Rig Release:7/30/2010 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:C-28B©65.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 17:15 - 17:30 0.25 CEMT P RUNPRD CLEAN AND CLEAR RIG FLOOR. 17:30 - 18:30 1.00 BOPSUR P RUNPRD RIG UP FOR BOP TEST.REMOVE WEAR RING.INSTALL TEST PLUG. 18:30 - 23:30 5.00 BOPSUR P RUNPRD TEST BOP WITH 2 7/8"AND 4 1/2"TEST JOINTS TO A LOW 250 PSI/HIGH 3500 PSI, V� EXCEPT FOR ANNULAR BAG.TEST ANNULAR BAG TO 2500 PSI. -EACH TEST CHARTED AND HELD FOR 5 MINUTES -RETEST CHOKE MANIFOLD VALVES 9 AND 11 DUE TO LEAKING STEM PACKING ON VALVE 11 DURING FIRST TEST TEST WITNESSED BY WSL JOSH MALLERY AND,TOOLPUSHER VICTOR TORRES. -AOGCC REP CHUCK SCHEVE WAIVED WITNESS OF TEST 23:30 - 00:00 0.50 BOPSUR P RUNPRD RIG DOWN FROM BOP TEST.PULL TEST PLUG.INSTALL WEAR RING. 7/28/2010 00:00 - 00:30 0.50 CASING P RUNPRD TEST 4.5"LINER AND LINER TOP PACKER TO 250 PSI FOR 5 MINUTES AND 3500 PSI 30 CHARTED MINUTES WITH 9 BBLS OF 8.5 PPG SEAWATER. -65 PSI LOST IN FIRST 15 MINUTES -20 PSI LOST IN SECOND 15 MINUTES -TOTAL OF 85 PSI LOST IN 30 MINUTE TEST -BLED BACK 9 BBLS 00:30 - 01:30 1.00 PERFOB P OTHCMP RIG UP TO RUN TCP PERFORATION GUNS AND 2 7/8"TUBING. 01:30 - 12:00 10.50 PERFOB P OTHCMP RUN IN HOLE WITH 200'OF 2.88"OD 6 SPF 2906PJ PERFORATION GUNS ON 2 7/8"FOX TUBING AND 4"DRILL PIPE. CORRECT FILL WHILE RIH. PICK UP 145K. SLACK OFF 120K. TAG UP ON 4 1/2"LANDING COLLAR AT 11,775'. 12:00 - 13:30 1.50 PERFOB P OTHCMP CIRCULATE AIR OUT OF SYSTEM.PICK UP TO POSITION TCP GUNS WITH BOTTOM SHOT AT 11,772'AND TOP SHOT AT 11.572' (200'). PJSM WITH CREWS,SCHLUMBERGER TCP GUN TECH AND WSL. PERFORM ONE PRACTICE RUN WITH PRESSURE SEQUENCE FOR FIRING GUNS. FIRED GUNS WITH PRESSURE SEQUENCE. GOOD INDICATION ON SURFACE OFGUNS FIRING. FLUID LEVEL DOPPED IN RISER 4". NO FURTHER LOSS OF FLUID NOTED 13:30 - 13:45 0.25 PERFOB P OTHCMP PULL OUT OF HOLE TO 11,570' TO POSITION TCP GUNS ABOVE TOP PERFORATION 13:45 - 15:30 1.75 PERFOB P OTHCMP CIRCULATE ONE BOTTOMS UP AT 6 BPM 'WITH 1275 PSI. NO GAS OR OIL ON BOTTOMS UP. 15:30 15:45 0.25 PERFOB P OTHCMP MONITOR WELL-STATIC.INSTALL STRIPPING RUBBER AND AIR SLIPS. Printed 9/2/2010 1:47:28PM North America-ALASKA-BP Page 4 of 6 Operation Summary Report Common Well Name:C-28 AFE No Event Type:COM-ONSHORE(CON) Start Date:7/28/2010 End Date:8/1/2010 X3-00VVP-C(1,363,109.00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.:DOYON 141 Spud Date/Time:3/12/2002 12:00:00AM Rig Release:7/30/2010 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:C-28B @65.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr i ft 15:45 - 00:00 8.25 PERFOB P OTHCMP PULL OUT OF HOLE FROM 11,570'MD TO 1,668'MD LAYING DOWN 4"DRILL PIPE IN PIPE SHED. SEAWATER IN AND OUT 8.4 PPG LOST 2 BBL TO THE WELL WHILE POH 7/29/2010 00:00 00:30 0.50 PERFOB P . OTHCMP RUN IN HOLE WITH REMAINING 4"DRILL PIPE STANDS IN DERRICK. 00:30 - 02:00 1.50 PERFOB OTHCMP PULL OUT OF HOLE FROM 2,800'MD TO 1,668' MD LAYING DOWN 4"DRILL PIPE IN PIPE SHED. SEAWATER IN AND OUT 8.4 PPG 02:00 - 02:15 0.25 PERFOB OTHCMP MONITOR WELL-STATIC. 02:15 - 02:45 0.50 PERFOB P OTHCMP 'RIG UP 2 7/8"TUBING HANDLING FOIIIPMFNT- 02:45 - 05:30 2.75 PERFOB P ® OTHCMP PULL OUT OF HOLE FROM 1668'MD TO 243' MD LAYING DOWN 45 JOINTS OF 2 7/8" TUBING IN PIPE SHED. 05:30 - 06:00 0.50 PERFOB P ® OTHCMP LAY DOWN 7 PERFORATION GUNS. ALL SHOTS FIRED. 06:00 - 06:30 0.50 PERFOB P OTHCMP CLEAN AND CLEAR RIG FLOOR 06:30 - 07:00 0.50 RUNCOM P RUNCMP PULL WEAR BUSHING.PERFORM DUMMY RUN WITH TUBING HANGER. 07:00 - 08:30 1.50 RUNCOM P RUNCMP RIG UP 4.5"COMPLETION RUNNING EQUIPMENT. HYDRAULIC TONGS,TORQUE TURN COMPUTER AND COMPENSATOR. 08:30 - 09:00 0.50 RUNCOM P RUNCMP PJSM WITH CREW,HALLIBURTON TECH, TORQUE TURN TECH AND WSL.CONFIRM COMPLETION EQUIPMENT RUNNING ORDER WITH CREW. 09:00 - 00:00 15.00 RUNCOM P RUNCMP RUN 4.5"12.6#13CR VAM TOP COMPLETION TUBING.BAKER-LOK ALL CONNECTIONS BELOW PACKER. MAKE UP TORQUE 4440 FT/LBS.USE JET LUBE SEAL GUARD ON ALL PREMIUM CONNECTIONS. 7/30/2010 00:00 - 01:00 1.00 1 RUNCOM P RUNCMP TAG UP WITH JOINT 240.LAY DOWN JOINTS 240,239 AND 238.SPACE OUT.PICK UP 9.89' PUP,HANGER AND LANDING JOINT.LAND COMPLETION WITH WLEG AT 10,189' -PICK UP WEIGHT 110K,SLACK OFF WEIGHT 93K 01:00 - 02:00 1.00 RUNCOM P RUNCMP RIG DOWN 4.5"COMPLETION RUNNING EQUIPMENT.HYDRAULIC TONGS,TORQUE TURN COMPUTER AND COMPENSATOR. LAY DOWN LANDING JOINT. 02:00 - 04:30 2.50 RUNCOM P RUNCMP REVERSE CIRCULATE 262 BBLS OF CLEAN CORROSION INHIBITED 8.5 PPG SEAWATER FOLLOWED BY 151 BBLS OF CLEAN SEAWATER. -3BPM,100 PSI Printed 9/2/2010 1:47:28PM North America-ALASKA-BP Page 5 of 6 Operation Summary Report Common Well Name.C-28 AFE No Event Type:COM-ONSHORE(CON) Start Date:7/28/2010 End Date:8/1/2010 X3-00VVP-C(1,363,109.00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.:DOYON 141 Spud Date/Time:3/12/2002 12:00:00AM Rig Release:7/30/2010 Rig Contractor:DOYON DRILLING INC. UWI: Active Datum:C-28B @65.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 04:30 - 07:30 3.00 RUNCOM P RUNCMP DROP BALL AND ROD.PRESSURE UP TUBING TO 2200 PSI AND SET PACKER. CONTINUE TO PRESSURE UP TUBING TO 3500 PSI. TEST TUBING FOR 30 CHARTED MINUTES AT 3500 PSI WITH 2 BBLS OF 8.5 PPG SEAWATER. -55 PSI LOST IN FIRST 15 MINUTES -10 PSI LOST IN SECOND 15 MINUTES -TOTAL OF 65 PSI LOST IN 30 MINUTE TEST BLEED TUBING PRESSURE TO 1500 PSI AFTER TEST. TEST INNER ANNULUS TO 250 PSI FOR 5 MINUTES AND 3500 PSI 30 CHARTED MINUTES WITH 6 BBLS OF 8.5 PPG SEAWATER. -15 PSI LOST IN FIRST 15 MINUTES -0 PSI LOST IN SECOND 15 MINUTES -TOTAL OF 15 PSI LOST IN 30 MINUTE TEST BLEED INNER ANNULUS TO 0 PSI AFTER TEST.THEN BLEED TUBING TO 0 PSI. PRESSURE UP ANNULUS TO SHEAR DCR-1 VALVE.SHEAR NOTED AT 2350 PSI. OBSERVE PRESURE DROP AND RETURNS THROUGH TUBING.PUMP 3 BBLS DOWN ANNULUS,THEN 3 BBLS DOWN TUBING TO CONFIRM CIRCULATION. 07:30 - 09:30 2.00 RUNCOM P RUNCMP INSTALL TWO WAY CHECK AND TEST TO 1000 PSI FROM BELOW AND 3500 PSI FROM ABOVE.EACH TEST HELD FOR 10 CHARTED MINUTES. 09:30 - 11:00 1.50 RUNCOM P RUNCMP RIG DOWN PRESSURE TESTING EQUIPMENT AND BLOW DOWN LINES.HOLD PRE JOB SAFETY MEETING FOR NIPPLING DOWN BOPE. 11:00 - 11:30 0.50 RUNCOM P RUNCMP NEUHARTH CREW SPILL DRILL,CREW RESPONSE TIME 120 SEC.HOLD AFTER ACTION REVIEW AFTER DRILL. 11:30 - 14:00 2.50 RUNCOM P RUNCMP NIPPLE DOWN BOPE. 14:00 - 15:30 1.50 WHSUR P RUNCMP NIPPLE UP TREE ADAPTER FLANGE AND TEST TO 500 PSI FOR 10 MINUTES THEN 5000 PSI FOR 30 MINUTES. 15:30 - 18:00 2.50 WHSUR P RUNCMP NIPPLE UP TREE AND TEST TO 5000 PSI FOR 30 MINUTES. 18:00 - 20:30 2.50 WHSUR P RUNCMP RIG UP TO FREEZE PROTECT WELL. LUBRICATE OUT TWO WAY CHECK VALVE. 20:30 - 22:00 1.50 WHSUR P RUNCMP FREEZE PROTECT WELL TO 2,200'ND. PUMP 151 BBLS DIESEL. -INTIAL CIRCULATING PRESSURE 200 PSI,2 BPM -FINAL CIRCULATING PRESSURE 500 PSI,2.8 BPM 22:00 - 23:00 1.00 WHSUR P RUNCMP ALLOW DIESEL TO U-TUBE BETWEEN ANNULUS AND TUBING. Printed 9/2/2010 1:47:28PM North America-ALASKA-BP Page 6 of 6 Operation Summary Report Common Well Name:C-28 AFE No Event Type:COM-ONSHORE(CON) Start Date:7/28/2010 End Date:8/1/2010 'X3-00VVP-C(1,363,109.00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.:DOYON 141 Spud Date/Time:3/12/2002 12:00:00AM Rig Release:7/30/2010 Rig Contractor:DOYON DRILLING INC. UWI• Active Datum:C-28B @65.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) _ 23:00 - 00:00 1.00 WHSUR P RUNCMP LUBRICATE IN BACK PRESSURE VALVE. TEST FROM BELOW TO 1000 PSI.SECURE WELL. RIG RELEASED AT 23:59 Printed 9/2/2010 1:47:28PM BP AMERICA Leak-Off Test Summary Well Name: C-28B Surface Leak Off Test Test Test Depth Test Depth AMW Pressure Pressure EMW Date Type (TMD-Ft) (TVD-Ft) (ppg) (psi) (BHP) (psi) (ppg) 07/16/10 LOT 8,487.00 6,928.00 10.50 800.00 4,578.90 12.72 07/22/10 FIT 10,360.00 8,472.78 8.60 630.00 4,415.30 10.03 Page 1 of 1 North America - ALASKA - BP Prudhoe Bay PB C Pad C-28_DIMS C-28B DIMS Design: C-28B Survey Report - Geographic 26 July, 2010 BPPASSPORT Survey Report-Geographic Company: North America-ALASKA-BP Local Co-ordinate Reference: Well C-28_DIMS Project: Prudhoe Bay TVD Reference: C-28B @ 65.29ft(Doyon 141) Site: PB C Pad MD Reference: C-28B @ 65.29ft(Doyon 141) Well: C-28_DIMS North Reference: True Wellbore: C-28B_DIMS Survey Calculation Method: Minimum Curvature Design: C-28B Database: EDM .16-Anc Prod-WH24P Project Prudhoe Bay,GPB,PRUDHOE BAY Map System: US State Plane 1927(Exact solution) System Datum: Mean Sea Level Geo Datum: NAD 1927(NADCON CONUS) Using Well Reference Point Map Zone: Alaska Zone 04 Using geodetic scale factor Site PB C Pad,TR-11-14 Site Position: Northing: 5,957,218.72 ft Latitude: 70° 17'22.367 N From: Map Easting: 662,550.03ft Longitude: 148°41'2.797 W Position Uncertainty: 0.00 ft Slot Radius: 0.000 in Grid Convergence: 1.24 ° Well C-28_DIMS,C-28 Well Position +N/-S 0.00 ft Northing: 5,959,353.00 ft Latitude: 70°17'42.967 N +E/-W 0.00 ft Easting: 664,359.00 ft Longitude: 148°40'8.736 W Position Uncertainty 0.00 ft Wellhead Elevation: 26.20ft Ground Level: 39.09ft Wellbore C-28B DIMS i Magnetics Model Name Sample Date Declination Dip Angle Field Strength (°) (°) (nT) 1 BGGM2009 7/12/2010 22.12 80.94 57,696 I I Design C-286 Audit Notes: Version: Phase: ACTUAL Tie On Depth: 8,467.70 I Vertical Section: Depth From(TVD) +NI-S +E/-W Direction (ft) (ft) (ft) (0) 28.00 0.00 0.00 193.08 Survey Program Date 7/26/2010 I From To (ft) (ft) Survey(Wellbore) Tool Name Description 92.70 8,467.70 Gyrodata(C-28_DIMS) GYD-CT-CMS Gyrodata cont.casing m/s 8,487.00 8,502.27 MWD INC+TREND R200(C-28B_DIMS) INC+TREND Inclinometer+known azi trend 8,595.31 10,306.66 MWD+IFR+MS R200(C-28B_DIMS) MWD+IFR+MS MWD+IFR+Multi Station 10,381.48 11,811.10 MWD+IFR+MS R300 R400(C-28B_DIMS MWD+IFR+MS MWD+IFR+Multi Station 7/26/2010 4:56:34PM Page 2 COMPASS 2003.16 Build 71 BPPASSPORT Survey Report- Geographic Company: North America-ALASKA-BP Local Co-ordinate Reference: Well C-28_DIMS Project: Prudhoe Bay TVD Reference: C-28B @ 65.29ft(Doyon 141) Site: PB C Pad MD Reference: C-28B @ 65.29ft(Doyon 141) Well: C-28_DIMS North Reference: True Wellbore: C-288_DIMS Survey Calculation Method: Minimum Curvature Design: C-28B Database: EDM.16-Anc Prod-WH24P Survey Measured Vertical Map Map Depth Inclination Azimuth Depth +N/-S +E/-W Northing Easting (ft) (0) (°) (ft) (ft) (ft) (ft) (ft) Latitude Longitude 28.00 0.00 0.00 28.00 0.00 0.00 5,959,353.00 664,359.00 70° 17'42.967 N 148°40'8.736 W 92.70 0.34 77.82 92.70 0.04 0.19 5,959,353.04 664,359.19 70° 17'42.968 N 148°40'8.731 W 192.70 0.21 152.13 192.70 -0.06 0.56 5,959,352.95 664,359.56 70°17'42.967 N 148°40'8.720 W 292.70 0.37 150.65 292.70 -0.50 0.81 5,959,352.52 664,359.82 70°17'42.962 N 148°40'8.713 W 392.70 0.42 161.62 392.70 -1.13 1.08 5,959,351.89 664,360.11 70°17'42.956 N 148°40'8.705 W 492.70 0.53 153.40 492.69 -1.89 1.40 5,959,351.14 664,360.45 70°17'42.949 N 148°40'8.695 W 592.70 0.60 175.46 592.69 -2.83 1.65 5,959,350.21 664,360.71 70°17'42.940 N 148°40'8.688 W 692.70 0.42 175.14 692.68 -3.72 1.72 5,959,349.32 664,360.81 70°17'42.931 N 148°40'8.686 W 792.70 0.48 183.89 792.68 -4.50 1.73 5,959,348.54 664,360.83 70°17'42.923 N 148°40'8.686 W 1 892.70 0.32 196.56 892.68 -5.18 1.62 5,959,347.85 664,360.73 70°17'42.916 N 148°40'8.689 W 992.70 0.33 164.74 992.68 -5.73 1.62 5,959,347.31 664,360.74 70°17'42.911 N 148°40'8.689 W 1,092.70 0.35 172.31 1,092.67 -6.31 1.73 5,959,346.73 664,360.87 70°17'42.905 N 148°40'8.686 W 1,192.70 0.14 262.46 1,192.67 -6.63 1.65 5,959,346.41 664,360.80 70°17'42.902 N 148°40'8.688 W 1,292.70 0.24 307.79 1,292.67 -6.52 1.37 5,959,346.52 664,360.51 70°17'42.903 N 148°40'8.696 W 1,392.70 0.18 16.16 1,392.67 -6.24 1.24 5,959,346.79 664,360.38 70°17'42.906 N 148°40'8.700 W 1,492.70 1.35 207.13 1,492.66 -7.14 0.75 5,959,345.88 664,359.91 70°17'42.897 N 148°40'8.714 W 1,592.70 3.42 191.04 1,592.57 -11.11 -0.36 5,959,341.88 664,358.89 70°17'42.858 N 148°40'8.747 W 1,692.70 4.85 175.83 1,692.31 -18.26 -0.62 5,959,334.74 664,358.78 70°17'42.788 N 148°40'8.754 W 1,792.70 5.50 188.06 1,791.91 -27.22 -0.99 5,959,325.77 664,358.61 70°17'42.700 N 148°40'8.765 W ' 1,892.70 6.21 197.22 1,891.39 -37.13 -3.26 5,959,315.81 664,356.55 70°17'42.602 N 148°40'8.831 W 1,992.70 6.79 189.84 1,990.75 -48.12 -5.87 5,959,304.77 664,354.18 70°17'42.494 N 148°40'8.907 W 2,092.70 7.93 196.39 2,089.92 -60.56 -8.83 5,959,292.26 664,351.50 70°17'42.372 N 148°40'8.994 W 2,192.70 10.69 190.41 2,188.60 -76.31 -12.45 5,959,276.45 664,348.22 70°17'42.217 N 148°40'9.099 W 2,292.70 12.57 190.18 2,286.54 -96.14 -16.05 5,959,256.54 664,345.06 70° 17'42.022 N 148°40'9.204 W 2,317.70 13.38 190.11 2,310.90 -101.67 -17.04 5,959,250.99 664,344.19 70°17'41.968 N 148°40'9.233 W ■ 2,342.70 14.19 190.03 2,335.18 -107.53 -18.08 5,959,245.11 664,343.28 70°17'41.910 N 148°40'9.263 W 2,367.70 14.77 189.93 2,359.39 -113.69 -19.16 5,959,238.93 664,342.33 70°17'41.849 N 148°40'9.295 W 2,392.70 15.90 189.37 2,383.50 -120.21 -20.27 5,959,232.39 664,341.36 70°17'41.785 N 148°40'9.327 W , 2,417.70 16.92 188.66 2,407.48 -127.18 -21.38 5,959,225.39 664,340.41 70°17'41.717 N 148°40'9.359 W 2,442.70 17.95 187.69 2,431.33 -134.60 -22.44 5,959,217.96 664,339.51 70°17'41.644 N 148°40'9.390 W 2,467.70 18.99 186.51 2,455.04 -142.45 -23.42 5,959,210.08 664,338.71 70°17'41.566 N 148°40'9.419 W 2,492.70 19.70 186.00 2,478.63 -150.69 -24.32 5,959,201.83 664,337.98 70°17'41.485 N 148°40'9.445 W 2,517.70 20.32 185.41 2,502.12 -159.20 -25.17 5,959,193.30 664,337.32 70°17'41.402 N 148°40'9.470 W 2,542.70 21.24 184.73 2,525.49 -168.03 -25.95 5,959,184.45 664,336.73 70°17'41.315 N 148°40'9.493 W 2,567.70 21.98 184.16 2,548.74 -177.21 -26.66 5,959,175.26 664,336.22 70°17'41.225 N 148°40'9.513 W 2,592.70 23.18 183.22 2,571.82 -186.79 -27.28 5,959,165.67 664,335.81 70°17'41.130 N 148°40'9.531 W 2,617.70 24.44 182.24 2,594.69 -196.87 -27.76 5,959,155.58 664,335.56 70°17'41.031 N 148°40'9.545 W 2,642.70 25.30 181.88 2,617.37 -207.38 -28.14 5,959,145.07 664,335.41 70°17'40.928 N 148°40'9.556 W 2,667.70 26.75 181.16 2,639.84 -218.34 -28.42 5,959,134.10 664,335.36 70°17'40.820 N 148°40'9.565 W 2,692.70 27.78 180.62 2,662.06 -229.80 -28.60 5,959,122.65 664,335.43 70°17'40.707 N 148°40'9.570 W 2,717.70 28.21 180.34 2,684.13 -241.53 -28.70 5,959,110.92 664,335.59 70°17'40.592 N 148°40'9.573 W 2,742.70 28.64 180.09 2,706.12 -253.43 -28.74 5,959,099.02 664,335.81 70°17'40.475 N 148°40'9.574 W 2,767.70 28.86 180.04 2,728.04 -265.45 -28.76 5,959,087.00 664,336.06 70°17'40.357 N 148°40'9.574 W i 2,792.70 29.08 179.94 2,749.91 -277.56 -28.76 5,959,074.89 664,336.32 70°17'40.238 N 148°40'9.574 W 2,817.70 29.80 179.95 2,771.68 -289.85 -28.74 5,959,062.61 664,336.60 70°17'40.117 N 148°40'9.574 W 2,842.70 30.53 180.06 2,793.30 -302.41 -28.74 5,959,050.05 664,336.88 70°17'39.993 N 148°40'9.574 W 2,867.70 31.24 180.26 2,814.75 -315.25 -28.78 5,959,037.22 664,337.12 70°17'39.867 N 148°40'9.575 W 2,892.70 31.99 180.40 2,836.04 -328.35 -28.86 5,959,024.12 664,337.33 70°17'39.738 N 148°40'9.577 W 2,917.70 32.28 180.43 2,857.21 -341.65 -28.95 5,959,010.82 664,337.53 70° 17'39.607 N 148°40'9.580 W 2,942.70 32.72 180.58 2,878.30 -355.08 -29.07 5,958,997.39 664,337.70 70° 17'39.475 N 148°40'9.584 W i 2,967.70 33.34 180.60 2,899.26 -368.71 -29.21 5,958,983.77 664,337.86 70°17'39.341 N 148°40'9.588 W 2,992.70 34.15 180.71 2,920.04 -382.59 -29.37 5,958,969.88 664,338.00 70°17'39.205 N 148°40'9.592 W j 3,017.70 35.84 181.86 2,940.52 -396.93 -29.70 5,958,955.55 664,337.99 70°17'39.064 N 148°40'9.602 W 3,042.70 37.18 182.90 2,960.62 -411.79 -30.31 5,958,940.68 664,337.70 70°17'38.918 N 148°40'9.620 W 3,067.70 38.23 183.52 2,980.40 -427.05 -31.17 5,958,925.40 664,337.18 70°17'38.767 N 148°40'9.645 W 7/26/2010 4:56:34PM Page 3 COMPASS 2003.16 Build 71 BPPASSPORT Survey Report-Geographic Company: North America-ALASKA-BP Local Co-ordinate Reference: Well C-28_DIMS Project: Prudhoe Bay TVD Reference: C-28B @ 65.29ft(Doyon 141) Site: PB C Pad MD Reference: C-28B @ 65.29ft(Doyon 141) Well: C-28_DIMS North Reference: True Wellbore: C-28B_DIMS Survey Calculation Method: Minimum Curvature Design: C-28B Database: EDM.16-Anc Prod-WH24P Survey I Measured Vertical Map Map 1 Depth Inclination Azimuth Depth +N/-S +E/-W Northing Easting (ft) (0) (°) (ft) (ft) (ft) (ft) (ft) Latitude Longitude 3,092.70 39.16 184.15 2,999.91 -442.65 -32.22 5,958,909.79 664,336.47 70° 17'38.614 N 148°40'9.675 W' 3,117.70 39.92 184.53 3,019.19 -458.52 -33.42 5,958,893.90 664,335.61 70° 17'38.458 N 148°40'9.710 W 3,142.70 40.73 185.05 3,038.25 -474.64 -34.77 5,958,877.75 664,334.62 70° 17'38.299 N 148°40'9.750 W', 3,167.70 41.31 185.28 3,057.11 -490.98 -36.25 5,958,861.38 664,333.50 70° 17'38.139 N 148°40'9.793 W 3,192.70 41.58 185.29 3,075.85 -507.45 -37.78 5,958,844.88 664,332.33 70° 17'37.977 N 148°40'9.837 W 3,217.70 41.76 185.29 3,094.52 -524.01 -39.31 5,958,828.30 664,331.16 70° 17'37.814 N 148°40'9.882 W 3,242.70 41.97 185.23 3,113.14 -540.62 -40.84 5,958,811.65 664,330.00 70° 17'37.650 N 148°40'9.926 W 3,267.70 42.15 185.47 3,131.70 -557.29 -42.40 5,958,794.95 664,328.80 70° 17'37.486 N 148°40'9.972 W 3,292.70 42.23 185.44 3,150.22 -574.01 -44.00 5,958,778.21 664,327.57 70° 17'37.322 N 148°40'10.018 W I 3,317.70 42.37 185.46 3,168.72 -590.76 -45.59 5,958,761.43 664,326.34 70° 17'37.157 N 148°40'10.065 W I 3,342.70 42.40 185.42 3,187.18 -607.53 -47.19 5,958,744.62 664,325.11 70°17'36.992 N 148°40'10.112 W I 3,367.70 42.54 185.45 3,205.62 -624.34 -48.79 5,958,727.79 664,323.88 70° 17'36.827 N 148°40'10.158 W 3,392.70 42.37 185.48 3,224.07 -641.14 -50.40 5,958,710.96 664,322.64 70°17'36.662 N 148°40'10.205 W 3,417.70 42.43 185.51 3,242.53 -657.92 -52.01 5,958,694.15 664,321.39 70°17'36.497 N 148°40'10.252 W 3,442.70 42.46 185.50 3,260.98 -674.71 -53.63 5,958,677.32 664,320.14 70° 17'36.332 N 148°40'10.299 W 3,467.70 42.52 185.56 3,279.41 -691.52 -55.26 5,958,660.49 664,318.88 70° 17'36.166 N 148°40'10.347 WI 3,492.70 42.57 185.53 3,297.83 -708.34 -56.89 5,958,643.63 664,317.62 70° 17'36.001 N 148°40'10.394 W I 3,517.70 42.36 185.66 3,316.27 -725.14 -58.54 5,958,626.80 664,316.34 70° 17'35.836 N 148°40'10.442 W I 3,542.70 42.48 185.71 3,334.73 -741.92 -60.21 5,958,609.99 664,315.03 70° 17'35.671 N 148°40'10.491 W I 3,567.70 42.48 185.77 3,353.17 -758.72 -61.90 5,958,593.16 664,313.71 70° 17'35.505 N 148°40'10.540 W 3,592.70 42.44 185.91 3,371.61 -775.51 -63.61 5,958,576.34 664,312.36 70°17'35.340 N 148°40'10.590 W' 3,617.70 42.48 186.03 3,390.05 -792.30 -65.37 5,958,559.52 664,310.98 70° 17'35.175 N 148°40'10.641 W 3,642.70 42.47 186.24 3,408.49 -809.08 -67.17 5,958,542.70 664,309.54 70° 17'35.010 N 148°40'10.694 W' 3,667.70 42.43 186.42 3,426.94 -825.85 -69.03 5,958,525.89 664,308.05 70°17'34.845 N 148°40'10.748 W 3,692.70 42.51 186.47 3,445.38 -842.63 -70.93 5,958,509.08 664,306.52 70°17'34.680 N 148°40'10.803 W 3,717.70 42.35 186.67 3,463.83 -859.38 -72.86 5,958,492.29 664,304.96 70°17'34.515 N 148°40'10.860 W 3,742.70 42.48 186.72 3,482.29 -876.13 -74.82 5,958,475.50 664,303.36 70°17'34.351 N 148°40'10.917 W, 3,767.70 42.46 186.74 3,500.73 -892.89 -76.80 5,958,458.70 664,301.75 70°17'34.186 N 148°40'10.974 W 3,792.70 42.37 186.82 3,519.19 -909.64 -78.79 5,958,441.92 664,300.12 70°17'34.021 N 148°40'11.032 W 3,817.70 42.53 186.88 3,537.63 -926.39 -80.80 5,958,425.13 664,298.48 70°17'33.856 N 148°40'11.091 W 3,842.70 42.65 186.86 3,556.04 -943.19 -82.83 5,958,408.29 664,296.82 70° 17'33.691 N 148°40'11.150 W 3,867.70 42.66 187.03 3,574.43 -960.00 -84.88 5,958,391.44 664,295.14 70° 17'33.526 N 148°40'11.210 W 3,892.70 42.79 187.03 3,592.79 -976.84 -86.95 5,958,374.56 664,293.43 70°17'33.360 N 148°40'11.270 W 3,917.70 42.68 187.06 3,611.15 -993.68 -89.03 5,958,357.68 664,291.72 70°17'33.195 N 148°40'11.331 W 3,942.70 42.72 187.10 3,629.53 -1,010.50 -91.12 5,958,340.82 664,290.00 70° 17'33.029 N 148°40'11.392 W 3,967.70 42.84 187.12 3,647.88 -1,027.35 -93.22 5,958,323.93 664,288.27 70°17'32.864 N 148°40'11.453 W 3,992.70 42.63 187.24 3,666.24 -1,044.18 -95.35 5,958,307.06 664,286.52 70°17'32.698 N 148°40'11.515 W 4,017.70 42.65 187.24 3,684.63 -1,060.98 -97.48 5,958,290.22 664,284.75 70° 17'32.533 N 148°40'11.577 W 4,042.70 42.71 187.26 3,703.01 -1,077.79 -99.62 5,958,273.36 664,282.98 70°17'32.367 N 148°40'11.639 W 4,067.70 42.63 187.31 3,721.39 -1,094.60 -101.77 5,958,256.51 664,281.20 70° 17'32.202 N 148°40'11.702 W 4,092.70 42.78 187.34 3,739.76 -1,111.42 -103.93 5,958,239.65 664,279.41 70° 17'32.037 N 148°40'11.765 W 4,117.70 42.78 187.30 3,758.11 -1,128.26 -106.09 5,958,222.77 664,277.61 70°17'31.871 N 148°40'11.828 W I 4,142.70 42.76 187.36 3,776.46 -1,145.10 -108.26 5,958,205.89 664,275.81 70° 17'31.705 N 148°40'11.891 W I 4,167.70 42.89 187.42 3,794.80 -1,161.95 -110.44 5,958,188.99 664,274.00 70°17'31.540 N 148°40'11.955 W', 4,192.70 42.78 187.42 3,813.13 -1,178.80 -112.64 5,958,172.10 664,272.17 70°17'31.374 N 148°40'12.019 W 4,217.70 42.53 187.37 3,831.52 -1,195.60 -114.82 5,958,155.26 664,270.36 70°17'31.209 N 148°40'12.082 W 4,242.70 42.44 187.28 3,849.95 -1,212.35 -116.97 5,958,138.47 664,268.57 70°17'31.044 N 148°40'12.145 W 4,267.70 42.48 187.13 3,868.40 -1,229.09 -119.09 5,958,121.68 664,266.82 70°17'30.879 N 148°40'12.207 W 4,292.70 42.70 187.14 3,886.80 -1,245.88 -121.19 5,958,104.85 664,265.09 70°17'30.714 N 148°40'12.268 W 4,317.70 42.60 187.06 3,905.19 -1,262.69 -123.28 5,958,088.00 664,263.36 70°17'30.549 N 148°40'12.329 W 4,342.70 42.55 186.87 3,923.60 -1,279.48 -125.33 5,958,071.18 664,261.68 70° 17'30.384 N 148°40'12.389 W'' 4,367.70 42.57 186.90 3,942.01 -1,296.27 -127.36 5,958,054.35 664,260.02 70° 17'30.219 N 148°40'12.448 W I 4,392.70 42.49 186.88 3,960.44 -1,313.04 -129.39 5,958,037.53 664,258.36 70° 17'30.054 N 148°40'12.507 W' 4,417.70 42.47 186.89 3,978.87 -1,329.80 -131.41 5,958,020.73 664,256.71 70°17'29.889 N 148°40'12.566 W 4,442.70 42.66 186.88 3,997.29 -1,346.59 -133.44 5,958,003.90 664,255.05 70° 17'29.724 N 148°40'12.625 W 7/26/2010 4:56:34PM Page 4 COMPASS 2003.16 Build 71 BPPASSPORT Survey Report- Geographic Company: North America-ALASKA-BP Local Co-ordinate Reference: Well C-28_DIMS Project: Prudhoe Bay TVD Reference: C-28B @ 65.29ft(Doyon 141) Site: PB C Pad MD Reference: C-28B @ 65.29ft(Doyon 141) Well: C-28_DIMS North Reference: True Wellbore: C-28B_DIMS Survey Calculation Method: Minimum Curvature Design: C-28B Database: EDM.16-Anc Prod-WH24P Survey Measured Vertical Map Map Depth Inclination Azimuth Depth +N/-S +E/-W Northing Easting (ft) (°) (°) (ft) (ft) (ft) (ft) (ft) Latitude Longitude 4,467.70 42.64 186.87 4,015.68 -1,363.41 -135.47 5,957,987.05 664,253.39 70° 17'29.558 N 148°40'12.684 W 4,492.70 42.40 186.83 4,034.10 -1,380.18 -137.48 5,957,970.23 664,251.74 70°17'29.393 N 148°40'12.743 W 4,517.70 42.51 186.75 4,052.55 -1,396.94 -139.48 5,957,953.44 664,250.11 70°17'29.229 N 148°40'12.801 W 4,542.70 42.59 186.69 4,070.96 -1,413.73 -141.46 5,957,936.61 664,248.50 70°17'29.063 N 148°40'12.858 W 4,567.70 42.58 186.62 4,089.37 -1,430.53 -143.42 5,957,919.77 664,246.91 70°17'28.898 N 148°40'12.915 W 4,592.70 42.74 186.52 4,107.76 -1,447.36 -145.35 5,957,902.90 664,245.34 70°17'28.733 N 148°40'12.972 W 4,617.70 42.60 186.47 4,126.14 -1,464.20 -147.27 5,957,886.03 664,243.79 70°17'28.567 N 148°40'13.028 W 4,642.70 42.63 186.49 4,144.53 -1,481.02 -149.18 5,957,869.18 664,242.25 70°17'28.402 N 148°40'13.083 W 4,667.70 42.70 186.45 4,162.92 -1,497.85 -151.09 5,957,852.30 664,240.71 70°17'28.236 N 148°40'13.139 W 4,692.70 42.47 186.34 4,181.32 -1,514.67 -152.98 5,957,835.46 664,239.19 70°17'28.071 N 148°40'13.194 W 4,717.70 42.56 186.26 4,199.75 -1,531.46 -154.83 5,957,818.63 664,237.71 70°17'27.906 N 148°40'13.248 W 4,742.70 42.48 186.22 4,218.18 -1,548.25 -156.67 5,957,801.80 664,236.24 70°17'27.740 N 148°40'13.302 W 4,767.70 42.39 186.08 4,236.63 -1,565.03 -158.47 5,957,784.99 664,234.80 70°17'27.575 N 148°40'13.354 W 4,792.70 42.55 186.04 4,255.07 -1,581.81 -160.26 5,957,768.17 664,233.38 70°17'27.410 N 148°40'13.406 W 4,817.70 42.44 185.94 4,273.50 -1,598.61 -162.02 5,957,751.34 664,231.99 70°17'27.245 N 148°40'13.457 W 4,842.70 42.29 185.95 4,291.98 -1,615.36 -163.76 5,957,734.55 664,230.61 70°17'27.080 N 148°40'13.508 W 4,867.70 42.28 185.94 4,310.47 -1,632.09 -165.50 5,957,717.79 664,229.23 70°17'26.916 N 148°40'13.559 W 4,892.70 42.38 185.99 4,328.95 -1,648.84 -167.25 5,957,701.01 664,227.85 70°17'26.751 N 148°40'13.610 W 4,917.70 41.81 185.96 4,347.50 -1,665.50 -169.00 5,957,684.31 664,226.47 70°17'26.587 N 148°40'13.661 W 4,942.70 41.80 185.90 4,366.14 -1,682.08 -170.72 5,957,667.71 664,225.11 70°17'26.424 N 148°40'13.711 W 4,967.70 41.93 185.84 4,384.76 -1,698.68 -172.43 5,957,651.08 664,223.77 70°17'26.261 N 148°40'13.761 W 4,992.70 41.88 185.83 4,403.36 -1,715.29 -174.12 5,957,634.43 664,222.44 70°17'26.098 N 148°40'13.810 W 5,017.70 42.08 185.88 4,421.95 -1,731.92 -175.83 5,957,617.77 664,221.10 70°17'25.934 N 148°40'13.860 W 5,042.70 41.79 186.26 4,440.55 -1,748.54 -177.60 5,957,601.12 664,219.69 70°17'25.771 N 148°40'13.911 W 5,067.70 41.96 186.35 4,459.16 -1,765.12 -179.43 5,957,584.50 664,218.22 70°17'25.608 N 148°40'13.965 W 5,092.70 42.14 186.44 4,477.72 -1,781.76 -181.29 5,957,567.82 664,216.72 70°17'25.444 N 148°40'14.019 W 5,117.70 42.19 186.62 4,496.25 -1,798.44 -183.20 5,957,551.11 664,215.18 70°17'25.280 N 148°40'14.075 W 5,142.70 42.41 186.89 4,514.75 -1,815.14 -185.18 5,957,534.37 664,213.57 70°17'25.116 N 148°40'14.132 W 5,167.70 42.41 187.53 4,533.20 -1,831.87 -187.30 5,957,517.60 664,211.82 70°17'24.951 N 148°40'14.194 W 5,192.70 42.37 188.13 4,551.67 -1,848.57 -189.59 5,957,500.86 664,209.89 70°17'24.787 N 148°40'14.261 W 57 484.12 664 207.81 70°17'24.623 N 148°40'14.332 W 188.50 -192.03 5 9 5,217.70 42.49 88 50 1 4 570.12 -1,865.26 9 2.0 5,242.70 42.42 188.93 4,588.57 -1,881.94 -194.59 5,957,467.39 664,205.62 70°17'24.459 N 148°40'14.406 W 5,267.70 42.47 189.12 4,607.01 -1,898.60 -197.24 5,957,450.67 664,203.34 70°17'24.295 N 148°40'14.483 W 5,292.70 42.53 189.21 4,625.45 -1,915.28 -199.93 5,957,433.94 664,201.01 70°17'24.131 N 148°40'14.562 W 5,317.70 42.42 189.28 4,643.89 -1,931.94 -202.64 5,957,417.23 664,198.67 70°17'23.967 N 148°40'14.641 W 5,342.70 42.44 189.26 4,662.34 -1,948.59 -205.36 5,957,400.52 664,196.32 70°17'23.803 N 148°40'14.720 W 5,367.70 42.61 189.29 4,680.76 -1,965.26 -208.08 5,957,383.79 664,193.96 70°17'23.639 N 148°40'14.799 W 5,392.70 42.23 189.47 4,699.22 -1,981.90 -210.83 5,957,367.10 664,191.57 70°17'23.476 N 148°40'14.879 W 5,417.70 42.00 189.48 4,717.76 -1,998.44 -213.59 5,957,350.51 664,189.18 70°17'23.313 N 148°40'14.960 W 5,442.70 42.13 189.60 4,736.32 -2,014.96 -216.36 5,957,333.93 664,186.76 70°17'23.150 N 148°40'15.041 W 5,467.70 42.25 189.93 4,754.85 -2,031.50 -219.21 5,957,317.33 664,184.28 70°17'22.988 N 148°40'15.124 W 5,492.70 42.53 190.04 4,773.31 -2,048.10 -222.13 5,957,300.67 664,181.72 70°17'22.824 N 148°40'15.209 W 5,517.70 42.86 190.50 4,791.68 -2,064.78 -225.16 5,957,283.93 664,179.06 70°17'22.660 N 148°40'15.297 W 5,542.70 43.22 190.71 4,809.96 -2,081.55 -228.30 5,957,267.10 664,176.29 70°17'22.495 N 148°40'15.388 W 5,567.70 43.46 190.86 4,828.14 -2,098.41 -231.51 5,957,250.18 664,173.45 70°17'22.330 N 148°40'15.482 W 5,592.70 43.61 191.14 4,846.26 -2,115.31 -234.79 5,957,233.21 664,170.53 70°17 22.163 N 148°40'15.578 W 5,617.70 43.92 191.17 4,864.32 -2,132.28 -238.14 5,957,216.17 664,167.56 70°17'21.997 N 148°40'15.675 W 5,642.70 44.17 191.25 4,882.29 -2,149.33 -241.52 5,957,199.06 664,164.55 70°17'21.829 N 148°40'15.774 W 5,667.70 44.38 191.27 4,900.19 -2,166.44 -244.93 5,957,181.87 664,161.52 70°17'21.661 N 148°40'15.873 W 5,692.70 44.52 191.38 4,918.03 -2,183.61 -248.36 5,957,164.63 664,158.46 70°17'21.492 N 148°40'15.973 W 5,717.70 44.44 191.39 4,935.87 -2,200.78 -251.82 5,957,147.39 664,155.38 70°17'21.323 N 148°40'16.074 W 5,742.70 44.42 191.36 4,953.72 -2,217.94 -255.27 5,957,130.16 664,152.30 70°17'21.154 N 148°40'16.174 W 5,767.70 44.21 191.45 4,971.61 -2,235.06 -258.73 5,957,112.97 664,149.23 70° 17'20.986 N 148°40'16.275 W 5,792.70 44.34 191.47 4,989.51 -2,252.16 -262.19 5,957,095.80 664,146.13 70° 17'20.817 N 148°40'16.376 W 5,817.70 44.40 191.48 5,007.38 -2,269.30 -265.67 5,957,078.59 664,143.03 70° 17'20.649 N 148°40'16.477 W 7/26/2010 4:56:34PM Page 5 COMPASS 2003.16 Build 71 BPPASSPORT Survey Report- Geographic Company: North America-ALASKA-BP Local Co-ordinate Reference: Well C-28_DIMS Project: Prudhoe Bay TVD Reference: C-28B @ 65.29ft(Doyon 141) Site: PB C Pad MD Reference: C-28B @ 65.29ft(Doyon 141) Well: C-28_DIMS North Reference: True Wellbore: C-28B_DIMS Survey Calculation Method: Minimum Curvature Design: C-28B Database: EDM.16-Anc Prod-WH24P Survey Measured Vertical Map Map Depth Inclination Azimuth Depth +N/-S +E/-W Northing Easting (ft) (0) (°) (ft) (ft) (ft) (ft) (ft) Latitude Longitude 5,842.70 44.47 191.55 5,025.23 -2,286.45 -269.17 5,957,061.37 664,139.91 70° 17'20.480 N 148°40'16.579 W 5,867.70 44.47 191.60 5,043.07 -2,303.60 -272.68 5,957,044.14 664,136.78 70°17'20.312 N 148°40'16.681 W 5,892.70 44.60 191.55 5,060.89 -2,320.78 -276.20 5,957,026.90 664,133.63 70°17'20.143 N 148°40'16.784 W 5,917.70 44.70 191.62 5,078.68 -2,337.99 -279.73 5,957,009.61 664,130.48 70°17'19.973 N 148°40'16.887 W 5,942.70 44.66 191.78 5,096.46 -2,355.21 -283.29 5,956,992.33 664,127.30 70°17'19.804 N 148°40'16.991 W 5,967.70 44.96 191.88 5,114.19 -2,372.45 -286.90 5,956,975.01 664,124.06 70°17'19.634 N 148°40'17.096 W 5,992.70 45.26 192.01 5,131.84 -2,389.78 -290.57 5,956,957.61 664,120.78 70°17'19.464 N 148°40'17.203 W 6,017.70 45.64 192.32 5,149.37 -2,407.19 -294.32 5,956,940.11 664,117.40 70°17'19.293 N 148°40'17.312 W 6,042.70 46.04 192.43 5,166.79 -2,424.71 -298.17 5,956,922.52 664,113.94 70°17'19.120 N 148°40'17.424 W 6,067.70 46.47 192.53 5,184.08 -2,442.35 -302.07 5,956,904.80 664,110.43 70°17'18.947 N 148°40'17.538 W 6,092.70 46.73 192.68 5,201.25 -2,460.07 -306.03 5,956,886.99 664,106.85 70°17'18.773 N 148°40'17.653 W 6,117.70 47.05 192.78 5,218.34 -2,477.87 -310.06 5,956,869.11 664,103.22 70°17'18.598 N 148°40'17.770 W 6,142.70 46.89 193.14 5,235.40 -2,495.68 -314.15 5,956,851.22 664,099.51 70°17'18.422 N 148°40'17.890 W 6,167.70 47.13 193.31 5,252.45 -2,513.49 -318.34 5,956,833.33 664,095.72 70°17'18.247 N 148°40'18.011 W 6,192.70 47.37 193.56 5,269.42 -2,531.34 -322.60 5,956,815.39 664,091.85 70°17'18.072 N 148°40'18.136 W 6,217.70 47.53 193.93 5,286.32 -2,549.23 -326.98 5,956,797.41 664,087.86 70°17'17.896 N 148°40'18.263 W I 6,242.70 47.84 194.19 5,303.15 -2,567.16 -331.47 5,956,779.38 664,083.77 70°17'17.719 N 148°40'18.394 W 6,267.70 48.01 194.42 5,319.90 -2,585.14 -336.06 5,956,761.30 664,079.58 70°17'17.543 N 148°40'18.528 W 6,292.70 48.36 194.44 5,336.57 -2,603.19 -340.70 5,956,743.16 664,075.33 70°17'17.365 N 148°40'18.663 W 6,317.70 48.81 194.61 5,353.11 -2,621.34 -345.40 5,956,724.92 664,071.02 70°17'17.187 N 148°40'18.800 W ' 6,342.70 48.98 194.72 5,369.55 -2,639.56 -350.17 5,956,706.59 664,066.65 70°17'17.007 N 148°40'18.939 W 6,367.70 49.12 194.85 5,385.93 -2,657.82 -354.99 5,956,688.24 664,062.24 70°17'16.828 N 148°40'19.079 W 6,392.70 49.27 194.98 5,402.27 -2,676.11 -359.86 5,956,669.85 664,057.77 70°17'16.648 N 148°40'19.221 W 6,417.70 49.02 195.08 5,418.62 -2,694.37 -364.76 5,956,651.49 664,053.26 70°17'16.468 N 148°40'19.364 W 6,442.70 49.13 195.16 5,435.00 -2,712.60 -369.69 5,956,633.15 664,048.74 70°17'16.289 N 148°40'19.507 W 6,467.70 49.13 195.22 5,451.36 -2,730.85 -374.64 5,956,614.80 664,044.19 70°17'16.110 N 148°40'19.652 W 6,492.70 49.01 195.24 5,467.74 -2,749.07 -379.61 5,956,596.48 664,039.62 70°17'15.930 N 148°40'19.796 W 6,517.70 49.40 195.26 5,484.07 -2,767.33 -384.58 5,956,578.11 664,035.05 70°17'15.751 N 148°40'19.941 W 6,542.70 49.71 195.26 5,500.29 -2,785.69 -389.59 5,956,559.65 664,030.44 70°17'15.570 N 148°40'20.087 W 6,567.70 49.73 195.40 5,516.45 -2,804.08 -394.63 5,956,541.16 664,025.80 70°17'15.389 N 148°40'20.234 W 6,592.70 49.99 195.45 5,532.57 -2,822.50 -399.72 5,956,522.63 664,021.12 70°17'15.208 N 148°40'20.382 W 6,617.70 49.99 195.51 5,548.64 -2,840.96 -404.83 5,956,504.07 664,016.42 70°17'15.027 N 148°40'20.531 W 6,642.70 49.87 195.48 5,564.73 -2,859.39 -409.94 5,956,485.52 664,011.71 70°17'14.845 N 148°40'20.680 W 6,667.70 49.79 195.54 5,580.86 -2,877.80 -415.05 5,956,467.01 664,007.01 70°17'14.664 N 148°40'20.829 W 6,692.70 49.33 195.75 5,597.08 -2,896.12 -420.18 5,956,448.58 664,002.28 70°17'14.484 N 148°40'20.978 W 6,717.70 49.33 195.92 5,613.37 -2,914.37 -425.35 5,956,430.23 663,997.51 70°17'14.305 N 148°40'21.129 W 6,742.70 49.31 195.96 5,629.66 -2,932.60 -430.56 5,956,411.89 663,992.70 70°17'14.125 N 148°40'21.280 W 6,767.70 49.09 195.95 5,646.00 -2,950.79 -435.76 5,956,393.59 663,987.90 70°17'13.946 N 148°40'21.432 W I 6,792.70 49.02 195.99 5,662.38 -2,968.95 -440.96 5,956,375.33 663,983.10 70°17'13.768 N 148°40'21.583 W 6,817.70 49.00 195.99 5,678.78 -2,987.09 -446.15 5,956,357.08 663,978.30 70°17'13.589 N 148°40'21.735 W 6,842.70 48.69 196.10 5,695.23 -3,005.18 -451.36 5,956,338.88 663,973.49 70°17'13.412 N 148°40'21.886 W 6,867.70 48.59 196.06 5,711.75 -3,023.21 -456.55 5,956,320.74 663,968.69 70°17'13.234 N 148°40'22.038 W 6,892.70 48.44 196.10 5,728.31 -3,041.20 -461.74 5,956,302.64 663,963.90 70°17'13.057 N 148°40'22.189 W 6,917.70 48.07 196.08 5,744.96 -3,059.12 -466.91 5,956,284.61 663,959.12 70°17'12.881 N 148°40'22.339 W 6,942.70 47.79 196.09 5,761.71 -3,076.96 -472.05 5,956,266.67 663,954.37 70°17'12.706 N 148°40'22.489 W 6,967.70 47.34 196.17 5,778.58 -3,094.68 -477.18 5,956,248.84 663,949.64 70°17'12.531 N 148°40'22.638 W 6,992.70 47.04 196.10 5,795.57 -3,112.30 -482.28 5,956,231.12 663,944.93 70°17'12.358 N 148°40'22.787 W 7,017.70 47.09 196.11 5,812.60 -3,129.88 -487.35 5,956,213.43 663,940.24 70°17'12.185 N 148°40'22.935 W 7,042.70 46.96 196.20 5,829.64 -3,147.45 -492.44 5,956,195.75 663,935.53 70°17'12.012 N 148°40'23.083 W 7,067.70 46.99 196.25 5,846.70 -3,165.00 -497.55 5,956,178.10 663,930.81 70°17'11.840 N 148°40'23.232 W 7,092.70 46.73 196.19 5,863.79 -3,182.52 -502.64 5,956,160.47 663,926.10 70°17'11.667 N 148°40'23.380 W 7,117.70 46.41 196.24 5,880.98 -3,199.95 -507.71 5,956,142.94 663,921.41 70°17'11.496 N 148°40'23.528 W 7,142.70 46.34 196.26 5,898.23 -3,217.32 -512.78 5,956,125.46 663,916.73 70°17'11.325 N 148°40'23.675 W 7,167.70 45.98 196.24 5,915.54 -3,234.64 -517.82 5,956,108.04 663,912.06 70°17'11.155 N 148°40'23.822 W 7,192.70 45.86 196.27 5,932.93 -3,251.88 -522.85 5,956,090.69 663,907.42 70°17'10.985 N 148°40'23.969 W 7/26/2010 4:56:34PM Page 6 COMPASS 2003.16 Build 71 BPPASSPORT Survey Report- Geographic Company: North America-ALASKA-BP Local Co-ordinate Reference: Well C-28_DIMS Project: Prudhoe Bay TVD Reference: C-28B @ 65.29ft(Doyon 141) Site: PB C Pad MD Reference: C-28B @ 65.29ft(Doyon 141) Well: C-28_DIMS North Reference: True Wellbore: C-286_DIMS Survey Calculation Method: Minimum Curvature Design: C-28B Database: EDM.16-Anc Prod-WH24P Survey Measured Vertical Map Map Depth Inclination Azimuth Depth +N/-S +E/-W Northing Easting (ft) (°) (0) (ft) (ft) (ft) (ft) (ft) Latitude Longitude 7,217.70 46.01 196.30 5,950.32 -3,269.12 -527.89 5,956,073.35 663,902.76 70° 17'10.816 N 148°40'24.115 W 7,242.70 45.95 196.33 5,967.69 -3,286.37 -532.94 5,956,055.99 663,898.09 70°17'10.646 N 148°40'24.263 W 7,267.70 45.83 196.26 5,985.09 -3,303.60 -537.98 5,956,038.65 663,893.43 70°17'10.476 N 148°40'24.409 W 7,292.70 45.69 196.26 6,002.54 -3,320.80 -542.99 5,956,021.35 663,888.79 70°17'10.307 N 148°40'24.555 W 7,317.70 45.48 196.31 6,020.03 -3,337.94 -548.00 5,956,004.11 663,884.16 70°17'10.139 N 148°40'24.701 W 7,342.70 45.53 196.23 6,037.55 -3,355.06 -552.99 5,955,986.89 663,879.54 70°17'9.970 N 148°40'24.847 W 7,367.70 45.41 196.26 6,055.09 -3,372.17 -557.98 5,955,969.67 663,874.93 70°17'9.802 N 148°40'24.992 W 7,392.70 45.34 196.16 6,072.65 -3,389.25 -562.95 5,955,952.48 663,870.34 70°17'9.634 N 148°40'25.137 W 7,417.70 45.49 196.07 6,090.20 -3,406.36 -567.89 5,955,935.28 663,865.77 70°17'9.466 N 148°40'25.280 W 7,442.70 45.47 195.99 6,107.73 -3,423.49 -572.81 5,955,918.04 663,861.22 70°17'9.297 N 148°40'25.424 W 7,467.70 45.26 195.88 6,125.29 -3,440.60 -577.70 5,955,900.83 663,856.72 70°17'9.129 N 148°40'25.566 W 7,492.70 45.22 195.84 6,142.89 -3,457.67 -582.55 5,955,883.66 663,852.24 70°17'8.961 N 148°40'25.707 W 7,517.70 45.14 195.78 6,160.52 -3,474.73 -587.38 5,955,866.49 663,847.78 70°17'8.793 N 148°40'25.848 W 7,542.70 45.02 195.74 6,178.17 -3,491.77 -592.19 5,955,849.36 663,843.35 70°17'8.626 N 148°40'25.988 W 7,567.70 44.76 195.56 6,195.88 -3,508.76 -596.95 5,955,832.27 663,838.96 70°17'8.459 N 148°40'26.127 W 7,592.70 44.60 195.57 6,213.66 -3,525.69 -601.66 5,955,815.24 663,834.62 70°17'8.292 N 148°40'26.264 W 7,617.70 44.72 195.50 6,231.44 -3,542.62 -606.37 5,955,798.21 663,830.28 70°17'8.126 N 148°40'26.401 W 7,642.70 44.63 195.31 6,249.22 -3,559.57 -611.04 5,955,781.17 663,825.98 70°17'7.959 N 148°40'26.537 W 7,667.70 43.95 194.87 6,267.11 -3,576.43 -615.58 5,955,764.22 663,821.81 70°17'7.793 N 148°40'26.670 W 7,692.70 42.61 194.28 6,285.31 -3,593.01 -619.90 5,955,747.54 663,817.86 70°17'7.630 N 148°40'26.795 W 7,717.70 40.46 193.65 6,304.02 -3,609.10 -623.90 5,955,731.37 663,814.21 70°17'7.472 N 148°40'26.912 W 7,742.70 38.66 193.41 6,323.30 -3,624.58 -627.62 5,955,715.82 663,810.82 70°17'7.320 N 148°40'27.020 W 7,767.70 38.07 193.07 6,342.90 -3,639.68 -631.18 5,955,700.64 663,807.60 70°17'7.171 N 148°40'27.124 W 7,792.70 37.66 192.44 6,362.64 -3,654.65 -634.57 5,955,685.60 663,804.54 70°17'7.024 N 148°40'27.222 W 7,817.70 37.54 191.84 6,382.44 -3,669.56 -637.77 5,955,670.63 663,801.66 70°17'6.877 N 148°40'27.316 W 7,842.70 37.52 191.20 6,402.27 -3,684.48 -640.82 5,955,655.64 663,798.95 70°17'6.730 N 148°40'27.404 W 7,867.70 37.20 191.03 6,422.14 -3,699.37 -643.74 5,955,640.70 663,796.35 70°17'6.584 N 148°40'27.490 W 7,892.70 37.24 191.05 6,442.05 -3,714.21 -646.64 5,955,625.80 663,793.78 70°17'6.438 N 148°40'27.574 W 7,917.70 37.06 191.11 6,461.97 -3,729.03 -649.54 5,955,610.92 663,791.20 70°17'6.292 N 148°40'27.658 W 7,942.70 36.79 191.23 6,481.96 -3,743.76 -652.45 5,955,596.13 663,788.62 70°17'6.147 N 148°40'27.743 W 7,967.70 36.76 191.09 6,501.98 -3,758.44 -655.34 5,955,581.38 663,786.04 70° 17'6.003 N 148°40'27.827 W 7,992.70 36.46 191.20 6,522.05 -3,773.07 -658.23 5,955,566.70 663,783.48 70°17'5.859 N 148°40'27.911 W 8,017.70 36.21 191.10 6,542.19 -3,787.61 -661.09 5,955,552.11 663,780.93 70°17'5.716 N 148°40'27.995 W 8,042.70 36.19 191.25 6,562.37 -3,802.09 -663.95 5,955,537.56 663,778.39 70°17'5.574 N 148°40'28.078 W 8,067.70 35.95 191.23 6,582.57 -3,816.53 -666.82 5,955,523.07 663,775.84 70°17'5.432 N 148°40'28.162 W 8,092.70 35.69 191.25 6,602.84 -3,830.88 -669.67 5,955,508.66 663,773.30 70°17'5.291 N 148°40'28.245 W 8,117.70 35.52 191.16 6,623.17 -3,845.16 -672.50 5,955,494.33 663,770.78 70°17'5.150 N 148°40'28.327 W 8,142.70 35.23 191.16 6,643.56 -3,859.36 -675.30 5,955,480.07 663,768.29 70°17'5.011 N 148°40'28.409 W 8,167.70 35.09 191.26 6,663.99 -3,873.48 -678.10 5,955,465.89 663,765.81 70°17'4.872 N 148°40'28.490 W 8,192.70 34.97 191.26 6,684.47 -3,887.55 -680.90 5,955,451.76 663,763.31 70°17'4.733 N 148°40'28.572 W 8,217.70 34.70 191.29 6,704.99 -3,901.56 -683.70 5,955,437.70 663,760.83 70°17'4.595 N 148°40'28.653 W 8,242.70 34.61 191.22 6,725.55 -3,915.50 -686.47 5,955,423.70 663,758.36 70°17'4.458 N 148°40'28.734 W 8,267.70 34.43 191.41 6,746.15 -3,929.39 -689.25 5,955,409.75 663,755.88 70°17'4.322 N 148°40'28.815 W 8,292.70 34.12 191.26 6,766.81 -3,943.19 -692.02 5,955,395.89 663,753.42 70°17'4.186 N 148°40'28.895 W 8,317.70 34.11 191.25 6,787.50 -3,956.95 -694.75 5,955,382.08 663,750.98 70°17'4.051 N 148°40'28.975 W 8,342.70 33.82 191.15 6,808.24 -3,970.65 -697.47 5,955,368.33 663,748.57 70°17'3.916 N 148°40'29.054 W 8,367.70 33.65 191.05 6,829.03 -3,984.27 -700.14 5,955,354.65 663,746.20 70°17'3.782 N 148°40'29.132 W 8,392.70 33.73 190.96 6,849.83 -3,997.88 -702.79 5,955,340.98 663,743.85 70°17'3.648 N 148°40'29.209 W 8,417.70 33.29 190.79 6,870.68 -4,011.44 -705.39 5,955,327.38 663,741.54 70°17'3.515 N 148°40'29.285 W 8,442.70 33.34 190.77 6,891.57 -4,024.93 -707.96 5,955,313.83 663,739.27 70°17'3.382 N 148°40'29.359 W 8,467.70 33.26 190.73 6,912.46 -4,038.41 -710.52 5,955,300.30 663,737.00 70°17'3.249 N 148°40'29.434 W 8,487.00 32.97 190.63 6,928.63 -4,048.77 -712.47 5,955,289.90 663,735.28 70°17'3.148 N 148°40'29.491 W 8,502.27 32.72 191.98 6,941.46 -4,056.89 -714.10 5,955,281.74 663,733.83 70°17'3.068 N 148°40'29.538 W 8,595.31 32.95 200.24 7,019.67 -4,105.26 -728.08 5,955,233.09 663,720.91 70°17'2.592 N 148°40'29.945 W 8,689.78 32.94 209.82 7,099.00 -4,151.68 -749.75 5,955,186.21 663,700.26 70°17'2.135 N 148°40'30.577 W 7/26/2010 4:56:34PM Page 7 COMPASS 2003.16 Build 71 BPPASSPORT Survey Report-Geographic Company: North America-ALASKA-BP Local Co-ordinate Reference: Well C-28_DIMS Project: Prudhoe Bay TVD Reference: C-28B @ 65.29ft(Doyon 141) Site: PB C Pad MD Reference: C-28B @ 65.29ft(Doyon 141) Well: C-28_DIMS North Reference: True Wellbore: C-28B_DIMS Survey Calculation Method: Minimum Curvature Design: C-28B Database: EDM.16-Anc Prod-WH24P Survey Measured Vertical Map Map Depth Inclination Azimuth Depth +N/-S +E/.W Northing Easting (ft) (°) (°) (ft) (ft) (ft) (ft) (ft) Latitude Longitude 8,726.14 32.04 209.31 7,129.67 -4,168.66 -759.39 5,955,169.02 663,691.00 70° 17'1.968 N 148°40'30.857 W 8,758.07 32.60 212.49 7,156.66 -4,183.31 -768.16 5,955,154.19 663,682.55 70°17'1.824 N 148°40'31.113 W 8,782.56 32.74 214.25 7,177.27 -4,194.34 -775.43 5,955,142.99 663,675.53 70°17'1.716 N 148°40'31.324 WI 8,879.54 32.31 221.30 7,259.07 -4,235.51 -807.30 5,955,101.15 663,644.56 70°17'1.311 N 148°40'32.253 W 8,970.09 33.74 224.51 7,335.00 -4,271.63 -840.91 5,955,064.30 663,611.75 70°17'0.956 N 148°40'33.232 W 9,066.54 35.29 228.10 7,414.48 -4,309.34 -880.43 5,955,025.74 663,573.07 70°17'0.585 N 148°40'34.383 W 9,158.72 33.24 227.60 7,490.65 -4,344.16 -918.91 5,954,990.09 663,535.36 70°17'0.242 N 148°40'35.503 W 9,251.61 35.90 229.51 7,567.14 -4,379.02 -958.43 5,954,954.37 663,496.62 70°16'59.899 N 148°40'36.655 W 9,345.40 35.84 227.18 7,643.14 -4,415.54 -999.48 5,954,916.97 663,456.37 70°16'59.540 N 148°40'37.850 W 9,440.12 35.88 227.70 7,719.91 -4,453.07 -1,040.36 5,954,878.56 663,416.34 70°16'59.171 N 148°40'39.041 W 9,534.52 35.25 225.01 7,796.71 -4,490.95 -1,080.08 5,954,839.82 663,377.45 70°16'58.798 N 148°40'40.198 W 9,628.04 34.55 224.33 7,873.41 -4,529.00 -1,117.70 5,954,800.96 663,340.67 70°16'58.424 N 148°40'41.293 W 9,721.49 36.44 224.25 7,949.49 -4,567.84 -1,155.59 5,954,761.30 663,303.65 70°16'58.042 N 148°40'42.397 W 9,815.95 35.18 224.70 8,026.09 -4,607.28 -1,194.31 5,954,721.03 663,265.80 70°16'57.654 N 148°40'43.524 W 9,910.05 36.16 223.91 8,102.53 -4,646.54 -1,232.63 5,954,680.94 663,228.35 70°16'57.268 N 148°40'44.640 W 10,004.40 35.23 225.19 8,179.16 -4,685.78 -1,271.24 5,954,640.87 663,190.61 70°16'56.882 N 148°40'45.765 W 10,098.39 33.80 225.11 8,256.60 -4,723.34 -1,309.00 5,954,602.50 663,153.69 70°16'56.512 N 148°40'46.865 W 10,194.21 33.99 225.85 8,336.14 -4,760.80 -1,347.10 5,954,564.21 663,116.42 70°16'56.144 N 148°40'47.974 W 10,284.99 34.50 225.94 8,411.18 -4,796.36 -1,383.78 5,954,527.87 663,080.52 70°16'55.794 N 148°40'49.042 W 10,306.66 34.73 226.26 8,429.02 -4,804.89 -1,392.65 5,954,519.14 663,071.84 70°16'55.710 N 148°40'49.301 W 10,381.48 35.08 220.47 8,490.39 -4,835.99 -1,422.01 5,954,487.41 663,043.17 70°16'55.404 N 148°40'50.156 W 10,406.33 34.86 218.75 8,510.76 -4,846.96 -1,431.09 5,954,476.24 663,034.33 70°16'55.296 N 148°40'50.420 W 10,471.00 34.05 217.31 8,564.08 -4,875.78 -1,453.63 5,954,446.94 663,012.43 70°16'55.013 N 148°40'51.077 W 10,497.47 35.05 218.24 8,585.88 -4,887.64 -1,462.83 5,954,434.88 663,003.49 70°16'54.896 N 148°40'51.344 W 10,527.08 36.31 216.17 8,609.93 -4,901.40 -1,473.27 5,954,420.90 662,993.36 70°16'54.761 N 148°40'51.648 W 10,562.23 38.00 212.92 8,637.95 -4,918.89 -1,485.29 5,954,403.15 662,981.72 70°16'54.589 N 148°40'51.999 W 10,592.90 38.57 210.93 8,662.03 -4,935.01 -1,495.34 5,954,386.81 662,972.03 70°16'54.430 N 148°40'52.291 W 10,626.42 39.81 209.54 8,688.01 -4,953.31 -1,506.00 5,954,368.28 662,961.77 70°16'54.250 N 148°40'52.601 W 10,659.72 41.24 207.28 8,713.32 -4,972.34 -1,516.29 5,954,349.03 662,951.91 70°16'54.063 N 148°40'52.901 W 10,688.86 42.67 203.98 8,734.99 -4,989.91 -1,524.71 5,954,331.29 662,943.88 70°16'53.890 N 148°40'53.146 W 10,721.51 44.30 201.35 8,758.68 -5,010.64 -1,533.35 5,954,310.38 662,935.68 70°16'53.686 N 148°40'53.398 W 10,751.10 46.09 198.02 8,779.54 -5,030.40 -1,540.42 5,954,290.47 662,929.06 70°16'53.492 N 148°40'53.603 W 10,782.51 47.22 196.56 8,801.10 -5,052.21 -1,547.20 5,954,268.51 662,922.75 70°16'53.278 N 148°40'53.801 W 10,814.50 48.95 193.46 8,822.47 -5,075.20 -1,553.36 5,954,245.40 662,917.10 70°16'53.051 N 148°40'53.980 W 10,843.31 50.37 191.44 8,841.12 -5,096.64 -1,558.09 5,954,223.86 662,912.84 70°16'52.841 N 148°40'54.118 W 10,876.44 52.49 191.00 8,861.77 -5,122.05 -1,563.12 5,954,198.35 662,908.36 70°16'52.591 N 148°40'54.264 W 10,908.72 55.15 189.90 8,880.83 -5,147.67 -1,567.85 5,954,172.63 662,904.20 70°16'52.339 N 148°40'54.402 W 10,941.63 58.12 188.42 8,898.93 -5,174.80 -1,572.21 5,954,145.42 662,900.42 70°16'52.072 N 148°40'54.529 W 10,971.64 60.88 187.02 8,914.16 -5,200.42 -1,575.68 5,954,119.73 662,897.52 70°16'51.820 N 148°40'54.630 W 11,003.30 63.50 185.83 8,928.93 -5,228.25 -1,578.81 5,954,091.84 662,895.00 70°16'51.546 N 148°40'54.721 W 11,029.65 66.43 184.42 8,940.08 -5,252.02 -1,580.94 5,954,068.03 662,893.39 70°16'51.312 N 148°40'54.782 W 11,065.32 69.00 182.42 8,953.60 -5,284.97 -1,582.90 5,954,035.05 662,892.15 70°16'50.988 N 148°40'54.839 W 11,091.11 71.37 181.07 8,962.34 -5,309.21 -1,583.64 5,954,010.79 662,891.94 70°16'50.750 N 148°40'54.861 W 11,127.89 73.54 179.50 8,973.43 -5,344.28 -1,583.81 5,953,975.74 662,892.53 70°16'50.405 N 148°40'54.865 W 11,158.71 75.16 178.30 8,981.75 -5,373.95 -1,583.24 5,953,946.09 662,893.75 70°16'50.113 N 148°40'54.849 W 11,190.33 76.75 176.32 8,989.42 -5,404.59 -1,581.80 5,953,915.49 662,895.86 70°16'49.812 N 148°40'54.807 W 11,222.73 78.38 173.72 8,996.40 -5,436.10 -1,579.05 5,953,884.04 662,899.30 70°16'49.502 N 148°40'54.726 W 11,251.59 80.11 170.66 9,001.78 -5,464.19 -1,575.20 5,953,856.05 662,903.77 70°16'49.226 N 148°40'54.614 W 11,283.67 81.40 167.35 9,006.94 -5,495.27 -1,569.16 5,953,825.12 662,910.49 70°16'48.920 N 148°40'54.438 W 11,313.77 82.78 165.87 9,011.08 -5,524.27 -1,562.25 5,953,796.28 662,918.02 70°16'48.635 N 148°40'54.236 W 11,346.44 84.13 166.48 9,014.81 -5,555.78 -1,554.50 5,953,764.94 662,926.46 70°16'48.325 N 148°40'54.010 W 11,377.70 86.22 167.13 9,017.43 -5,586.11 -1,547.39 5,953,734.78 662,934.24 70°16'48.027 N 148°40'53.803 W 11,406.70 88.89 166.71 9,018.67 -5,614.33 -1,540.83 5,953,706.71 662,941.41 70°16'47.749 N 148°40'53.612 W 11,433.52 89.33 166.83 9,019.09 -5,640.43 -1,534.69 5,953,680.75 662,948.11 70°16'47.492 N 148°40'53.433 W 11,462.60 89.34 166.36 9,019.43 -5,668.72 -1,527.95 5,953,652.62 662,955.47 70°16'47.214 N 148°40'53.237 W 7/26/2010 4:56:34PM Page 8 COMPASS 2003.16 Build 71 BPPASSPORT Survey Report-Geographic Company: North America-ALASKA-BP Local Co-ordinate Reference: Well C-28_DIMS Project: Prudhoe Bay TVD Reference: C-28B©65.29ft(Doyon 141) Site: PB C Pad MD Reference: C-28B©65.29ft(Doyon 141) Well: C-28_DIMS North Reference: True Wellbore: C-28B_DIMS Survey Calculation Method: Minimum Curvature Design: C-28B Database: EDM .16-Anc Prod-WH24P Survey Measured Vertical Map Map Depth Inclination Azimuth Depth +N/-S +E/-W Northing Easting (ft) (°) (°) (ft) (ft) (ft) (ft) (ft) Latitude Longitude 11,497.58 88.10 164.50 9,020.21 -5,702.56 -1,519.16 5,953,618.98 662,965.00 70° 16'46.881 N 148°40'52.980 W 11,532.25 86.51 162.82 9,021.84 -5,735.79 -1,509.41 5,953,585.97 662,975.47 70°16'46.555 N 148°40'52,696 W 11,577.32 86.48 162.69 9,024.59 -5,778.76 -1,496.08 5,953,543.31 662,989.74 70° 16'46.132 N 148°40'52.308 W 11,621.37 88.59 162.58 9,026.49 -5,820.76 -1,482.94 5,953,501.61 663,003.79 70°16'45.719 N 148°40'51.925 W 11,668.26 89.64 162.21 9,027.21 -5,865.45 -1,468.76 5,953,457.25 663,018.94 70° 16'45.280 N 148°40'51.512 W 11,723.77 89.40 161.43 9,027.68 -5,918.18 -1,451.45 5,953,404.90 663,037.41 70° 16'44.761 N 148°40'51.007 W 11,811.10 91.13 160.97 9,027.27 -6,000.85 -1,423.30 5,953,322.88 663,067.35 70° 16'43.948 N 148°40'50.187 W 11,864.00 91.13 160.97 9,026.23 -6,050.85 -1,406.06 5,953,273.27 663,085.68 70°16'43.456 N 148°40'49.684 W Targets Target Name -hit/miss target Dip Angle Dip Dir. TVD +N/-S +E/-W Northing Easting -Shape (0) (°) (ft) (ft) (ft) (ft) (ft) Latitude Longitude C-28B Geo-Poly 0.00 0.00 9,025.29 -5,541.90 -1,500.64 5,953,780.00 662,980.00 70° 16'48.462 N 148°40'52.442 W I -actual wellpath misses target center by 56.60ft at 11346.44ft MD(9014.81 TVD,-5555.78 N,-1554.50 E) -Polygon Point 1 9,025.29 -5,541.90 -1,500.64 5,953,780.00 662,980.00 Point 2 9,025.29 -6,087.93 -1,232.50 5,953,240.00 663,260.00 Point 3 9,025.29 -6,156.58 -1,524.09 5,953,165.00 662,970.00 I Point 4 9,025.29 -5,564.82 -1,596.17 5,953,755.00 662,885.00 Point 5 9,025.29 -5,541.90 -1,500.64 5,953,780.00 662,980.00 Casing Points Measured Vertical Casing Hole Depth Depth Diameter Diameter (ft) (ft) Name (in) (in) 2,736.70 2,700.85 13 3/8" 13.375 17.500 10,339.00 8,455.58 DRILLING LINER 1 7.000 8.500 Checked By: Approved By: Date: 7/26/2010 4:56:34PM Page 9 COMPASS 2003.16 Build 71 dr WELL LOG TRANSMITTAL To: State of Alaska September 3, 2010 Alaska Oil and Gas Conservation Commission Attn.: Christine Shartzer 333 West 7th Avenue, Suite 100 Anchorage,Alaska 99501-3539 RE: LWD Formation Evaluation Logs: C-28B AK-MW-0007409879 C-28B 50-029-20867-02 2"x 5" MD Triple Combo Logs: 1 Color Log 2"x 5"TVD Triple Combo Logs: 1 Color Log Digital Log Images&LWDG-formatted LIS Data w/verification listing; 1 CD Rom PLEASE ACKNOWLEDGE RECEIPT BY SIGNING AND RETURNING A COPY OF THE TRANSMITTAL LETTER TO THE ATTENTION OF: Sperry Drilling Attn: Bryan Burinda 6900 Arctic Blvd. 0/0 Anchorage,Alaska 99518 00 03 Office: 907-273-3536 Fax: 907-27 -3535 • ,; ri rfi 1.-i Date: '? '' ' Signed: 12, rigA1303 • • SITAITIE ALAZIEA SEAN PARNELL, GOVERNOR ALASKA OIL AND GAS 333 W. 7th AVENUE, SUITE 100 CONSERVATION COMMISSION ANCHORAGE, ALASKA 99501 -3539 PHONE (907) 279 -1433 FAX (907) 276 -7542 John Egbejimba Engineering Team Leader BP Exploration (Alaska), Inc. P.O. Box 196612 Anchorage, AK 99519 -6612 Re: Prudhoe Bay Field, Prudhoe Bay Oil Pool, PBU C -28B BP Exploration (Alaska), Inc. Permit No: 210 -063 Surface Location: 1865' FNL, 1033' FEL, SEC. 19, T11N, R14E, UM Bottomhole Location: 2640' FNL, 2477' FEL, SEC. 30, T11N, R14E, UM Dear Mr. Egbejimba: Enclosed is the approved application for permit to re -drill the above referenced development well. This permit to drill does not exempt you from obtaining additional permits or an approval required by law from other governmental agencies and does not authorize conducting drilling operations until all other required permits and approvals have been issued. In addition, the Commission reserves the right to withdraw the permit in the event it was erroneously issued. Operations must be conducted in accordance with AS 31.05 and Title 20, Chapter 25 of the Alaska Administrative Code unless the Commission specifically authorizes a variance. Failure to comply with an applicable provision of AS 31.05, Title 20, Chapter 25 of the Alaska Administrative Code, or a Commission order, or the terms and conditions of this permit may result in the revocation or suspension of the permit •nK. orm. Co - issioner DATED this 6day of May, 2010. cc: Department of Fish 86 Game, Habitat Section w/o encl. (via e -mail) Department of Environmental Conservation w/ o encl. (via e -mail) STATE OF ALASKA RECE ALASI•IL AND GAS CONSERVATION co.... RECE PERMIT TO DRILL , S.Io 20 AAC 25.005 MAY 1 8 201 la. Type of work: 1b. Proposed Well Class: ® Development Oil ❑ Service - Winj ❑ Single Zone lc. _ .eci if . ell is . ` .,; ,, s' : ❑ Drill ® Redrill ❑ Stratigraphic Test ❑ Development Gas ❑ Service - Supply ❑ Multiple Zone ' • • ' - J ! c - '' L • ' y. rates ❑ Re -Entry ❑ Exploratory ❑ Service - WAG ❑ Service - Disp OW Shale Gas 2. Operator Name: 5. Bond: ® Blanket ❑ Single Well 11. Well Name and Number: BP Exploration (Alaska) Inc. Bond No. 6194193 PBU C -28B 3. Address: 6. Proposed Depth: 12. Field / Pool(s): P.O. Box 196612, Anchorage, Alaska 99519 - 6612 MD 11864' TVD 9026' Prudhoe Bay Field / Prudhoe 4a. Location of Well (Govemmental Section): 7. Property Designation (Lease Number): Bay Oil Pool Surface: ADL 028305 & 028310 1865' FNL, 1033' FEL, SEC. 19, T11N, R14E, UM Top of Productive Horizon: 8. Land Use Permit: 13. Approximate Spud Date: 2192' FNL, 2596' FEL, SEC. 30, T11N, R14E, UM June 3, 2010 Total Depth: 9. Acres in Property: 14. Distance to Nearest Property: 2640' FNL, 2477' FEL, SEC. 30, T11N, R14E, UM 2560 25140' 4b. Location of Well (State Base Plane Coordinates - NAD 27): 10. KB Elevation above MSL: 72.6' feet 15. Distance to Nearest Well Open Surface: x- 664359 y- 5959353 Zone- ASP4 GL Elevation above MSL: 37.29' feet to Same Pool: 680' 16. Deviated Wells: Kickoff Depth: 8450' feet 17. Maximum Anticipated Pressures in psig (see 20 AAC 25.035) Maximum Hole Angle: 90 degrees Downhole: 3220 Surface: 2340 18. Casing Program: Specifications Top - Setting Depth - Bottom Quantity of Cement, c.f. or sacks Hole Casing Weight Grade Coupling Length MD , TVD MD TVD (including stage data) 8 -1/2" 7" 26# L -80 VamTop 1913' 8300' 6782' 10213' 8365' 195 cu ft Class 'G' 6 -1/8" 4 -1/2" 12.6# L -80 TCII , 1805' 10060' 8165' 11864' 9026' 3'lif-cu ft Class 'G' . 'W45 G Ji /4- S'-vi- to 19. PRESENT WELL CONDITION SUMMARY (To be completed for Redrill and Re -entry Operations) Total Depth MD (ft): Total Depth TVD (ft): Plugs (measured): Effective Depth MD (ft): Effective Depth TVD (ft): Junk (measured): 11708' 9032' 9931' 11676' 9031' None Casing Length Size Cement Volume MD TVD Conductor / Structural 110' 20" x 30" 9 cu vds Concrete 110' 110' Surface 2744' 13 -3/8" 3993 cu ft Permafrost II 2744' 2705' Intermediate 10232' 9 -5/8" 1413 cu ft Class 'G', 130 cu ft PF 'C' 10232' 8437' Production Liner 728' 7" 441 cu ft Class 'G' 9991' - 10719' 8243' - 8832' Liner 1683' 3 - 1/2" x 3 - 3/16" x 2 - 7/8" 61 cu ft Class 'G' 10025' - 11708' 8271' - 9032' Perforation Depth MD (ft): Below Plug: 11030' - 11676' Perforation Depth TVD (ft): 9029' - 9031' 20. Attachments: ❑ Property Plat ❑ BOP Sketch Z Drilling Program ❑ Time vs Depth Plot ❑ Shallow Hazard Analysis ❑ Diverter Sketch ❑ Seabed Report ® Drilling Fluid Program 18120 AAC 25.050 Requirements 21. Verbal Approval: Commission Representative: Date: 22. I hereby certify that the foregoing is true and correct. Contact Charles Reynolds, 564 -5480 Printed Name John Egbejimba Title Engineering Team Leader Jio Prepared By Name /Number Signature Phone 564 -5859 Date 5I/ I; Terrie Hubble, 564 - 4628 Commission Use Only Permit To Drill API Number: Permit ApprOV :„� 1 I See cover letter for Number: ...P./006S 50- 029 - 20867 -02 -00 V J t J other requirements Conditions of Approval: If box is checkej, well may not be used to explore for, test, or produce coalbed methane, gas hydrates, or gas contained shales: Ig'' Other: -k scio r �' `s t Samples Req'd: ❑ Yes WIN° Mud Log Req'd: ❑ Yes UNo if Z. SOO f at 4 A w e/ $'I Cw .z H Measures: 'Yes ❑ No Directional Survey Req'd: er Yes ❑ No D e-1 ‘I e-ae 74 5-/-%na 1 L l a.ccep 7 la. ° 01 Z 5. Z 1 s C � ') APPROVED BY THE COMMISSION Date g-2- "la , COMMISSIONER Form 10 Revised 07/2009 This permit is valid for 24 months from the det • ; , pr val • AAC 005 • Submit In Duplicate \I „..y1t i 14,_, S'ZV' /c • • bP To: Alaska Oil & Gas Conservation Commission From: Charles Reynolds, ODE Date: May 17, 2010 Re: C -28B Sidetrack Permit to Drill Well C -28B is currently scheduled to be drilled by Doyon 141 on June 20th, 2010. Maximum anticipated surface pressure from the Ivishak with a full column of gas from TD to surface is 2,352 psi. We will be utilizing Doyon's 5000 psi four preventer stack (3 rams and an annular). The BOPs will be tested to 3500 psi. The sidetrack plan for the C -28B includes the following: during pre -rig operations pulling 4 -/12" tubing patch, XX plug, nipple reducer, bullheading cement across the perforations and cutting the 4 -1/2" tubing -600' below the planned whipstock exit point. During rig operations, the 4 -1/2" tubing will be pulled. The whipstock exit from the 9- 5/8" casing is estimated at 8400' MD and will be milled using an 8 -1/2" milling assembly. The 8 -1/2" hole will be drilled to the Top of the Sag River where a 7" liner will be run and 1000' of cement will be pumped. The production hole will be drilled with a 6 -1/8" BHA building to horizontal in Zone 2A. The well will then run horizontally through the Ivishak formation. The liner will be a 4 -1/2" L -80 liner and the tubing will be 4 -1/2" 13Cr, tied into the top of the production liner. Please find attached the C -28B Well Plan Summary, directional plan and proposed completion diagram. If you have any questions or require any additional information, please contact me at 564 -5480 C -28B Permit to Drill Application Page 1 • 0 Planned Well Summary Well C -28B T ype Producer Objective Ivishak API Number: 50- 029 - 20867 -02 Current Status C -28A Cycling producer Estimated Start Date: June -2010 Time to Complete: 19.9 Days Surface Northing Easting Offsets TRS Location 5,959,352 664,359 1866' FNL / 3924' FWL 11N, 14E, 19 Northing Easting TVDss Offsets TRS Sag Target 5,954,525 663,075 -8,367 1385' FNL / 2536' FWL 11N, 14E, 30 Target 5,953,715 662,940 -8,960 2384' FNL / 2384' FWL 11N, 14E, 30 Location BHL 5,953,270 663,070 -8,960 2639' FNL / 2505' FWL 11N, 14E, 30 Planned KOP: 8,450'MD/ 6,841' TVDss Planned TD: 11,864'MD/ 8,960' TVD Rig: Doyon 141 GL/RT: 23.8'/28.5' RTE: 52.3' Directional — Schlumberger /Anadrill C -28B (P4) KOP: 1 8450' MD Maximum Hole Angle: -34.5° in the 8 -1/2" intermediate section -90° in the 6-1/8" production section Close Approach Wells: Two anti - collision risks in this well B- 30 /B -30A. Survey Program: Standard MWD +IIFR +MS Nearest Property Line: 25,140' (S) Nearest Well within Pool: 680' to B -30A Contacts Name Phone # E -mail Drilling Engineer Charles Reynolds 564 -5480 charles.reynolds @ bp.com Geologist Adam Van Holland 564 -4477 adam.vanholland @bp.com Pad Engineer Alice Kaminski 564 -5676 alice.kaminski @bp.com C -28B Permit to Drill Application Page 2 • Current Well Information • • Well Name: C -28A API Number: 50- 029 - 20867 -01 PTD: 2020450 Well Type: Producer Current Status: Shut in since December, 2007 due to T x IA communication. BHP: 3220 psi @ 8800' TVDss (7.0 ppg) BHT: 204° F @ 8800' TVDss Mechanical Condition: Tubing: 4 -1/2" 12.6# L -80 BTC to 10,025' MD. (Planned tubing cut at -9,000' MD.) • TD / PBTD: 11,708' MD / 11,676' MD (P &A to -9,965' MD during pre -rig) Max Dogleg (to KOP): 8.2 °/100' @ 7700' MD Max Angle (to KOP): 49.9° @ 6600' MD Wellhead Equipment: McEvoy SSH Starting Head: McEvoy SSH 13 -5/8" 5000 psi (screw -on) Tbg. Spool: McEvoy SSH 13 -5/8" x 13 -5/8" 5000 psi with 2 outlet valves Tbg. Hanger: McEvoy (5) Seal Hanger 13 x 4.5 TDS Top and Bottom Csg. Hanger: 9 5/8" Mandrel Tbg. Head Adapter: McEvoy (5) Seal Adaptor 13 -5/8" 5K x 4 -1/8" 5K Tree: 4 -1/8" Carbon Tree BPV Profile: McEvoy H profile Completion Equipment: SSSV: 4 -1/2" Otis SSSVN ID 3.813" Control line: Not specified Gas Lift Mandrel: 4.5" x 1" GLM Control line bands /clamps: Not specified Casing Equipment: Surface Casing: 13 3/8" 72 #, L -80 Butt - 2742' MD 13 3/8" Cement: 4194 sx 14.9 ppg Permafrost II & 100 sks 15.2 ppg Permafrost II top job. Intermediate Casing: 9 -5/8 ", 47 #, L -80 Butt - 10,232' MD 9 -5/8" Cement - Primary 1229 sx 15.8 PPG Class G - Cement estimated from 5700' to TD. 9 -5/8" Cement - DV Collar 130 cu.ft (140 sks) Permafrost C @ 15.7 ppg Tubing Fluids: 8.6 ppg w /2000' diesel cap (As Planned - MUST CONFIRM) IA Fluids 8.6 ppg w /2000' diesel cap (As Planned - MUST CONFIRM) ' OA Freeze Protection 212 bbls of Arctic Pack- Density Not Reported Perforations: As Planned - P &A'ed w /cement tested to 2500 psi. Pre -Rig MIT / PPPOT Data: MIT -OA Passed 2000 psi 10/10/2009. CMIT -IA Passed 3000 psi 10/10/2009. PPPOT -T Passed 5000 psi 10/29/2009 PPPOT -IC Passed 3500 psi 10/2/2009 C -28B Permit to Drill Application Page 3 S EW Wellhead/Tree Requirement Wellhead: Well Number Customer I Rig C-28B BPXA Charles Reynolds Current Configuration McEvoy SSH Item Description MPN Customer ID Tubing Head 13-5/8" 5K x 13-5/8" 5K 2049645-01-01 67883 13 X 4-1/2 TDS top and bottom, Type "H" back pressure Tubing Hanger valve profile 270503-00-00-05 67897 Adapter Flange 13-5/8" 5K x 4-1/8" 5K 67895 Packoff 9-5/8" Mandrel 270405-00-00-05 67891 New Configuration Item Description ,MPN Customer ID Tubing Head - :" - :" 2049645_-01-01 No Change 13 X 4-1/2 TC-II top and bottom with type "H" back pressure Tubing Hanger valve profile 2221338-02-01 282293-X Adapter Flange 13-5/8" 5K X 4-1/8" 5K , 2024164-02 67901-X Packoff 9-5/8" Mandrel 270405-00-00-05 67891-X Notes: C-28B Permit to Drill Application Page 4 Formation Markers C -28B (lad on SOR) Est. Formation Hydrocarbon Formation Tops Bearing Thickness Formation (TVDSS) TVD RKB MD RKB (Yes/No) TVD MD 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 WS2 -5583 5649 No WS1 -5793 5859 No CM3 -6029 6095 No CM2 -6453 6519 No KOP@ 8466 MD -6854 6920 8466 No CM1 -7015 7081 8596 No 161 130 THRZ -7405 7471 9004 No 390 408 BHRZ -7588 7654 9266 No 183 262 LCU/Top Kingak -7588 7654 9266 No 0 0 TJD -7977 8043 9737 No 389 471 TJC -8036 8102 9809 No 59 72 TJB -8183 8249 9988 No 147 179 TJA -8275 8341 10101 No 92 112 TSGR -8367 8433 10213 Yes 92 112 TSHU -8396 8462 10253 Yes 29 40 TSAD -8483 8549 10359 Yes 87 106 42SB -8592 8658 10487 Yes 109 128 TCGL -8673 8739 10586 Yes 81 99 BCGL -8744 8810 10679 Yes 71 93 23SB -8809 8875 10773 Yes 65 94 22TS -8874 8940 10886 Yes 65 113 PGOC -8915 8981 10970 Yes 41 84 21TS -8926 8992 10984 Yes 11 14 HOT -8960 9026 No 34 C -28B Permit to Drill Application Page 5 Casing/Tubing Progra. Hole Csg / Wt/Ft Grade Conn Burst Collapse Length Top Bottom Size Tbg O.D. (psi) (psi) MD / TVD MD / TVD 8 - 7" 26# L -80 Vam -top 7,240 5,410 1,913' 8300'/6,782' 10,213' / 8,365' 6 -1/8" 4 12.6# L -80 TCII 8,430 7,500 1,804' 10,060'/8,165' 11,864' / 9025' Tubing 4 12.6# 13Cr -80 Vam -Top 8,430 7,500 10,060' Surface 10,060/8,165' Mud Program Intermediate Mud Properties: LSND 1 8 -1/2" hole section Depth Interval Density (ppg) PV YP API FL HTHP FL MBT PH 8,450'- 12,451' 9.5 12 - 22 18 - 28 4 - 6 <10.0 <20 9 - 10 (KOP to Sag) Production Mud Properties: FLOPRO SF Reservoir Drill -in Fluid 1 6 -1/8" hole section Depth Interval Density (ppg) PV YP LSVR API Fl pH MBT 10,213'- 11,864' 8.4 — 8.5 8 -12 22 -28 >20,000 6.0 -8.0 9.0 -9.5 < 3 Logging Program 8 -1/2" Intermediate: Sample Catchers — as required by Geology Drilling: Dir /GR/Res/ Open Hole: None Cased Hole: None 6 -1/8" Production: Sample Catchers — as required by Geology Drilling: Dir /GR/RES /Neu /Den Open Hole: None Cased Hole: None Cement Program Casing Size 7" 26 #, L -80 Intermediate Casing Basis: Lead: None Tail: Volume of open hole + 40% excess + 80' shoe track Tail TOC: 9,213' MD Total Cement Spacer 25 bbls of Viscosified Spacer weighted to 11 ppg (Mud Push II) Volume: Lead N/A Tail 35 bbls, 195 cuft, 166.4 sks 15.8 Ib /qal Class G + adds @ 1.17 cuft/sk Temp BHST = 193° F, BHCT TBD by Schlumberger Casing Size 4.5" 12.6 #, L -80 Production Liner Basis: Lead: None Tail: Volume of open hole + 40% excess + 80' shoe track + 150' of liner lap + 200' of 7" x 4" DP excess. Tail TOC: 10,060' MD (Liner Top, excess will be circulated out) Total V lu Bement Spacer 25 bbls of Viscosified Spacer weighted to 12 ppg (Mud Push II) Lead N/A 7 6, a't'. PA. Tail 47 bbls, 539.1 cuft, ks 15.8 lb/gal Class G + adds @ 1.17 cuft/sk Temp BHST = 204° F, BHCT TBD by Schlumberger C -28B Permit to Drill Application Page 6 S urface and Anti- Coll•n Issues • • Surface Shut -in Wells: There are no wells requiring surface shut -in in order to move onto the well. At surface C -27 is -120' to the north. Close Approach Shut -in Wells: B -30A fails major risk scan based on the current plan. This well is non - producing (shut -in) waterflood well and the zone of concern is below the production packer. A tolerable collision risk worksheet has been filled out for B -30A and the well will be shut in while drilling C -28B. Hydrogen Sulfide Recent H data from the pad is as follows: Well Name H2S Level Date o Read #1 Closest SHL Well H2S Level C -27B 15 ppm 7/8/2007 #2 Closest SHL Well H2S Level C -06B 12 ppm 1/30/2009 #1 Closest BHL Well H2S Level B -30A 101 ppm 9/21/2009 #2 Closest BHL Well H2S Level B -03B 24 ppm 3/1/2008 Max. Recorded H2S on Pad/Facility C -39A 25 ppm 4/16/2007 Other Relevant H2S Data C -Pad is not an H2S site, most wells are typically less than (H2S alarms from rigs, etc.) 30 ppm Faults Two 10 ft throw fault crossings are expected, one in the Kingak near 9825 ft MD and another in Zone 2 near 11775 ft MD. The planned well passes close (200ft, 140 ft and 70 ft) to several other small faults in the Zone 2 • build section which is the reason for the narrow polygon at landing. Well Control Well control equipment consisting of 5,000 psi working pressure pipe rams (2), blind /shear rams, and annular preventer will be installed and are capable of handling the maximum potential surface pressures. Based upon calculations below, BOP equipment will be tested to 3,500 psi. BOP regular test frequency for 15 -16B will be 14 days during drilling phase and 7 days, during decompletion and surface casing work. BOPE and drilling fluid system schematics on file with the AOGCC. Intermediate Interval Maximum anticipated BHP 3,220 psi CO 8,800' TVD (7.03 ppg EMW) Maximum surface pressure 2340 psi (.10 psi /ft gas gradient to surface) Kick tolerance Infinite with 10.1 ppg frac gradient, assuming 7.03 ppg reservoir, 4" DP and 9.5ppq MW Planned BOP test pressure Rams test to 3,500 psi /250 psi. Annular test to 2,500 psi /250 psi 7" Casing Test 3500 psi surface pressure Integrity Test — 8 -1/2" hole FIT /LOT after drilling 20' from middle of window 7" Casing The VBRs will be changed to 7" rams to accommodate the 7" drilling liner C -28B Permit to Drill Application Page 7 Production Interval S Maximum anticipated BHP 3,220 psi @ 8,800' TVD (7.03 ppg EMW) Maximum surface pressure 2340 psi (.10 psi /ft gas gradient to surface) Kick tolerance Infinite with 9.0 ppg frac gradient, assuming 7.03 ppg reservoir, 4" DP and 8.5 Ppq MW Planned BOP test pressure Rams test to 3,500 psi /250 psi. Annular test to 2,500 psi /250 psi Integrity Test — 6 -1/8" hole FIT /LOT after drilling 20' of new hole Planned completion fluids 8.5 ppg Seawater / 6.8 ppg Diesel Other Request: Given rig floor height limitations, a MASP < 3000 psi, and the fact that the three ram drilling BOP configuration is preferred to a two ram configuration with a spool, BPXA will execute the provisions of 20 AAC 25.285 (f) (1) regarding the initial testing of the BOPE as follows when existing wellhead or testing equipment prevents the testing of the lowest set of pipe rams: That lowest set of rams will be tested at the earliest opportunity during path - forward de- completion work, i.e., after the completion has been pulled from the well. Safety concerns and spacing limitations with the wellhead height and tubing spool preclude us from installing a spacer spool in the three -ram drilling BOP stack. Disposal • No annular injection in this well. • Cuttings Handling: Cuttings generated from drilling operations will be hauled to grind and inject at DS- 04. Any metal cuttings will be sent to the North Slope Borough. • Fluid Handling: Haul all drilling and completion fluids and other Class II wastes to DS -04 for injection. Haul all Class I waste to Pad 3 for disposal. C -28B Permit to Drill Application Page 8 DrilliAt Hazards and Continctncies POST THIS NOTICE IN THE DOGHOUSE I. Well Control A. The Ivishak in this fault block is expected to be 7.03 ppg EMW. This pressure is estimated based on offset well pressures. 3500 psi test pressure is in accordance with the RP for Prudhoe production well casing tests for producing wells. II. Lost Circulation /Breathing A. Care should be taken to pick the 7" casing point pick and avoid drilling into the Sag where lost circulation potential is high with the planned intermediate hole mud weight. B. Two 10 ft throw fault crossings are expected, one in the Kingak near 9825 ft MD and another in Zone 2 near 11775 ft MD. The planned well passes close (200ft, 140 ft and 70 ft) to several other small faults in the Zone 2 build section which is the reason for the narrow polygon at landing. The risk of loss circulation for the planned well is low and no LC costs included. III. Kick Tolerance /Integrity Testing A. With the planned mud weights, the kick tolerance for the intermediate section is infinite, and for the production section is infinite. The FIT /LOT will prove up adequate formation strength for expected ECD's. B. Integrity Testing Test Point Test Depth Test type 9 -%" window 20 -ft minimum from the 9-%" window FIT /LOT 7" shoe 20 -ft minimum from the 7" shoe FIT /LOT IV. Hydrogen Sulfide A. C -Pad is not considered an H2S site. The highest reading of H2S from C -28 is 15 ppm in 2007. The highest recorded H2S level on the pad was 25 ppm on C -39 (4/16/2007) V. Faults A. As noted above, there are 2 expected fault crossings in on C -28B. One fault will be encountered in the intermediate interval, the other in the production section and the lost circulation potential is considered low. VI. Anti - Collision Issues A. B -30A fails major risk scan based on the current plan. This well is non - producing (shut -in) waterflood well and the zone of concern is below the production packer. A tolerable collision risk worksheet has been filled out for B -30A and the well will be shut in while drilling C -28B. CONSULT THE C -PAD DATA SHEET AND THE WELL PLAN FOR ADDITIONAL INFORMATION C -28B Permit to Drill Application Page 9 • Operations Summar • y y Well Status: ✓ PPPOT - T Passed 10/29/2009 ✓ PPPOT - IC Passed 10/2/2009 ✓ MIT - OA Passed to 2000 psi 10/10/09 ✓ MIT - T x IA Passed to 3000 psi 10/10/09 Notify the field AOGCC representative with intent to plug and abandon Pre -Riq Operations: W 1 PPPOT -IC, PPPOT -T F 2 MIT -IA, MIT -OA S 3 Pull straddle patch, XX plug and nipple reducer. Drift tubing for jet cut • F 4 Confirm injectivity as required for P &A to follow. F 5 Bullhead Cement P &A • S • 6 Drift for jet cut to TOC and tag. F 7 Combo MIT -TxIA E • 8 Jet cut tubing @ 9000' MD. F 9 Circ well to 1% KCL and freeze protect. CMIT- TxIA D • 10 Bleed casing and annulus pressures to zero. V 11 Set BPV. Remove well house and flow line. Level pad as necessary. , Riq Operations: 1. MI / RU Doyon Rig 141 2. Pull BPV. Circulate out diesel freeze protection and displace the well to seawater. 3. Set and test TWC to 1,000 psi from above and below. 4. Nipple down tree & tubing adapter. Nipple up and test BOPE to 3,500psi high/ 250psi low. Pull TWC. . 5. R/U & pull 4 -1/2" tubing from the cut depth at 9000' MD. P i's eon• 6. R/U & Run 9 -5/8" cleanout BHA down past EZSV setting depth 7. RIH with HES EZSV bridge plug on E -line and set as required to avoid cutting a casing collar while milling the window. 8. Pressure -test the 9-%" casing to 3,500 psi for 30 minutes. Record test. 9. Change out 9 -5/8" Pack offs laA d 10. P/U and RIH with 9-%" Baker bottom -trip anchor whip stock assembly. Orient whipstock and set on �_` EZSV bridge plug. Shear off of whip stock. 11. Displace the well to LSND based milling fluid. Completely displace the well prior to beginning milling operations. 12. Mill window in 9-%" casing, plus approximately 20' beyond middle of window. Circulate well bore clean. 13. Pull up into 9-%" casing and perform LOT. POOH. 14. M/U 8 - MTR GR /RES /MWD assembly. RIH, kick off and drill the 8 -' /z" intermediate section with V LSND drilling fluid. 15. Drill ahead to the 7" liner point at top of the Sag River, as per the directional plan. Circulate the well 71) clean, short trip as needed. POOH. r 16. Change out to 7" rams, and test to 250 psi / 3,500 psi 17. MU and run 7 ", 26 #, L -80, VamTop HC liner to bottom on drill pipe. Circulate and condition the hole. 18. Pump 1000' of cement behind the 7" liner. Test the liner to 3,500 psi for 30 charted minutes. 19. Set the hanger and packer. 20. Circulate bottoms up, POOH, LJD liner running tool (LRT). 21. Change out rams to variable and test to 250 psi / 3,500 psi 22. M/U the 6 -W Dir /GR /DEN /NEU /Res assembly with an insert bit. Pick Up DP as necessary. 23. RIH, Drill out of cement and 7" liner float equipment. 24. Displace to 8.4 ppg Flo Pro Fluid. 25. Continue drilling out the 7" shoe plus -20' new formation, pull up into the shoe and perform a FIT. C -28B Permit to Drill Application Page 10 26. Drill the 6 - %" reduction il1'l�rval as per directional plan to TD. P p p 27. POOH. UD BHA. 28. MU and RIH to bottom with 4 -'/2 ", 12.6 #, L -80 solid liner. This will include 150' liner lap inside the 7" drilling liner. 29. Cement the liner. 30. Set liner top packer and displace well to clean seawater above the liner top. a. A pert pill will be left in the 4 - liner. 31. POOH, UD LRT. 32. Pressure test casing and liner to 3,500 psi for 30 minutes. 33. RU DPC pert guns, RIH and perforate. Pert intervals to be supplied by asset. 34. R/U and run a 4 -'/2 ", 12.6 #, 13Cr, VamTop tubing completion, stinging into the 4 -'/2" liner tie back sleeve. 35. Space out and make up tubing hanger per Cameron Rep. 36. Land the tubing hanger, and run in lock down screws. 37. Circulate Corrosion Inhibitor. 38. Set packer and individually test the tubing and annulus to 3,500 psi for 30 minutes. Record each test. 39. Shear Circulating Valve 40. Set a BPV. 41. Nipple down the BOPE. Nipple up the tree and test to 5,000 psi. 42. Freeze protect the well to -2,200' TVD. Secure the well. 43. RD and Move Off. Post -Rio Operations: 1. MI / RU slick line. Pull the ball and rod / RHC plug from landing nipple below the production packer. 2. Replace the DCK shear valve with a dummy GLV. 3. Install well house and instrumentation. 4. Modify S- Riser As Needed. Drilling Engineer: Charles Reynolds (907) 564 -5480 Production Engineer: Alice Kaminski (907) 564 -5676 Geologist: Adam VanHolland (907) 564 - 4477 N C -28B Permit to Drill Application Page 11 TREE= 4- 1/16" FMC WELLHEAD = McEVOY = C-28A SAFETY NOTES: WELL ANGLE> 70° @ 10970' ACTUATOR BAKER 00.@ 11103'. KB. ELEV = 72.59' BF. ELEV = 37.29' KOP = 2150' Max Angle = 96 @ 11612' 1 2006' H4 -1/2" OTIS SSSVN, ID = 3.813 " 1 Datum MD = 10767' Datum TVD = 8800' SS E 2595' 1 -19 -5/8" DV COLLAR I 13 -3/8" CSG, 72 #, L -80, D = 12.347" H 2742' I , GAS LIFT MANDRELS 1 3255 044 'DEV 42 I OTIS DMY I LATCH' H P 0 10 DATE 1 06 Minimum ID = 2.31" @ 9931' 6650' - 66781 - 1/2" BAKER PATCH SET, ID = 2.45" I I 1 4 -1/2" X 2 -7/8" NIPPLE REDUCER 7-7 9931' l4 -1/2" OTIS x NIP . w / 2 -7/8" NP REDUCER, D = 2.31" 9931' 1_12-7/8" XX PLUG (12/06/07) I 1 4-1/2" TBG, 12.6 #, L -80, .0152 bpf, D = 3.958" I-1 9942' I I 9942' H BKR PBR SEAL ASSY 1 1 0CrA Sit 9965' 14 9 -5/8" X 4-1/2" BKR HB PKR, D = 3.985" 1 M0 9991' 9-5/8" X 7" BOT SHORTY LNR HGR I N''' ., v .' 10025' 3.70" BKR KB LTPKRw /GS, ID =2.56" 1 9 -5/8" CSG, 47 #, L -80, D = 8.681" H 10232' ( • I /�1 13- 3/16" TBG, 6.2#, L -80, .0076 bpf, ID = 2.786" 1 �! �� 10378' 1-1 BKR SEAL LOCATOR D = 2.39" 1 * *4 1 '1 x 103 H3-3/4" BKR DEPLOY SLV, D = 3.000" 1 1 � v � 10384' H BTM BKR SEAL ASSY, D = 2.39" I • 11 • i I 10391' H3-1/2" XN NP, D = 2.750" I ► ► 14 -1/2" TM/ WHIPSTOCK (03/11/02) H 10719' ' � 4 -1/2" & 7" MrLLOUT WINDOW ■ 11 '' 10719' - 10730' OFF HPSTOCK I RA PP TAG 1 10728' X1. r ;� : ( W > Ie4 •1 14 -1/2" CIBP1 --1 10800' 1 .1 x A% " _ I 10766' H MtLABLE 3 -3/16° X 2 -7/8" XO, ID = 2.377" I ►i4 11 1 1 1 1 1 1 CI ►'1`M►'1 PERFORATION SUMMARY 1 1 1 4' 1 1 1 1 1 1 1 1 ► 1 1 REF LOG: MCNL ON 03/20/02 10 • ANGLE AT TOP PERF: 79 © 1 1 Note: Refer to Production DB for historical pert data ∎1 ` SIZE SPF INTERVAL Opn /Sqz DATE 1 ► 111 1 1 1 1 1 1 1 1. 1 1 i 2" 6 11030 - 11080 C 08/12/04 11111111 • 2° 4 11200 -11450 C 03/21 /02 11111111 ► 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2" 6 11636 - 11676 C 07/22/03 1 1 1 1 1 1 1 1 1 / 1 / 1 1 1 , 1••••••• ►1111111 111.11111 11676' PBTD 1111'`4 • 111 ;11• ■ 1 PBTD H 11154' ►�� � �� 1'1'1'1'1'1'1'1'1 Va............., 1111111 2 -7/8" LNR, 6.5#, L -80, .0058 bpf, D = 2.377" 11708' 17" LNR 26#, L -80, .0383 bpf, 0 = 6.276" H 11212' DATE REV BY COMMEhffS DATE REV BY COMMENTS PRUDHOE BAY UNIT 01/05/83 ORIGINAL COMPLETION 11/15/06 OOB/TLH PERF DATE CORRECTION WELL: C-28A 08/13/89 RIG WORKOV BZ 07/14/07 MGS /PJC PULL PX & SET NIP RED XX PLUG PERMIT No: '1020450 03/22/02 CTD SIDETRACK (C -28A) 08/04/07 GJB /SV PATCH SET (07/29/07) AR No: 50 -029- 20867 -01 05/19/06 KSB/TLH GLV C/O (05/13/06) 08/21/07 SWC/PJC PULL XX PLUG SEC 19, T11N, R14E 1865' SNL & 1033' WEL 06/21/06 BSEIPJC SET CAT STANDING VALVE 12/14/07 KDC/PJC SET XX PLUG @ 9931' (12/06/07) 09/15/06 JRP/TLH PULL CAT VLV /SET PX PLUG BP Exploration (Alaska) TREE= 4 FMC SAFt I Y NOTES: WELL ANGLE > 70 @ 10970' ACTUATOR = BAKE= MBAKE R �� 090 @ 11103'. KB. ELEV = 72.59' BF. ELEV =— 37.29' KOP= 2150 Max Angle = 36 @ 11612' 2006' H4-1/2" OTIS SSSVN ID = 3.813 " Datum MD = 10767' Datum TVD = 8800' SS = _ 1 2595' 1 DV COLLAR GAS LIFT MA NDRELS 13 -3/8" CSG, 72 #, L -80, ID = 12.347" —I 2742' J ST MD TV D DEV TYPE V LV LATCH PORT DATE 4 -1/2" TBG, 12.6 #, L -80, .0152 bpf, ID = 3.958" H 9942' I Minimum ID = 2.31 @ 9931 4 -1/2" X 2 -7/8" NIPPLE REDUCER 8300' _17 Liner Hanger /LTP "V Nr 10060' 1 _14 -1/Z' x T' Liner Hanger / LTP 9-5/8" Whipstock H 8450' 10213' _ I T'Csg, 26#, L -80, TAI, ID = 6.276" HES EZSV H 8500' _ - . I ■ ■ 4 1/2" 12.6# (3.958" ID) 0.0152 bpf H 11,864' 9942' — I BKR PBR SEAL ASSY l .. ���1 9965' _19 X 4-1/2" BKR HB PKR, ID = 3.985" 9-5/8" CSG, 47 #, L -80, ID = 8.681" 10232' 4 ' 0'� , V 1 9991' H9 -5/8" X 7" BOT SHORTY LNR HGR 3- 3/16" TBG, 6.2#, L -80, .0076 bpf, ID = 2.786" I r ", �'� 111 I ∎�1 „. I '1 10025' — 3.70" BKR KB LT PKR w i GS, ID = 2.56" 4-1/2" TM/ WHIPSTOCK (03/11/02) I 10719' ■ ! N l , 10378' H BKR SEAL LOCATOR, ID = 2.39" RA PIP TAG H 10728' J *♦ 10382' H 3 -3'`4" BKR DEPLOY SLV, ID = 3.000" 14-1(2" CIBP 10800' 10384' —I BTM BKR SEAL ASSY, ID = 2.39" I 10391' H3 - 1/2 "XN NIP, ID= 2.750" I PERFORATION SUMMARY , 0 ; , REF LOG: MCNL ON 03:20/02 ,,' A NGLE A T TOP PERF: 79 @ 11030' Note, Refer to Production DB for historical perf data ' * * * SIZE SPF INTERVAL Opn /Sqz DATE ► . � . ** 4. 4 `i I 10766' HMLLABLE 3- 3/16" X 2 -7/8" XO, ID = 2.377" 2" 6 11030 - 11080 08/12/04 rn 10* f ••'� ` 2" 4 11200 - 11450 03/21/02 � •• 1 2" 6 11636 -11676 c 07/22/03 1 # •••0 44: � ' � 1�: ' •! , �: 11 67 --, PBTD • I PBTD I-{ = . ::w �� 7' LNR, 26 #, L -80, .0383 bpf, ID = 6.276" I I 'T �•�•�•�'�'�'� I2 -718" LNR, 6.5#, L -80, .0058 bpf, ID = 2.377" H 11708' I DATE REV BY COMMENTS DATE REV BY COMMENTS FRUDHOE BAY WIT 01/05/83 ORIGINAL COMPLETION 11715708 PERF DATE CORRECTION WELL: C 08/13/89 RIG WORKOVER 07/14/07 MGS /PJC PULL PX & SET NIP RED: XX PLUG PERMIT No: 2020450 03122/02 CTD SIDETRACK (C - 28A) 08/04/07 GJB /SV PATCH SET (07/29/07) API No: 50- 029 - 20867 -01 05/19/06 KSB/TLH GLV C/O (05/13/06) 08/21/07 SWC/PJC PULL XX PLUG SEC 19, T11 N. R14E 1865' SNL & 1033' WEL 06/21/06 BSEIPJC SET CAT STANDING VALVE 12/14/07 KDC/PJC SET XX PLUG @ 9931' (12/06/07) 09/15/06 JRP/TLH PULL CAT VLV /SET PX PLUG BP Exploration (Alaska) by - 0 C -28B (P4b) Proposal Report Schlumberger (Def Plan) Report Date: May 14, 2010 - 09:16 AM Survey / DLS Computation: Minimum Curvature / Lubinski Client: BP Exploration Alaska Vertical Section Azimuth: 199.320 ° (True North) Field: Prudhoe Bay Unit - WOA $ti TVD Reference Da Rotary Table 0 ft Well: / Slot: C-PAD / 28 C-28 Fe *SI pi I ifi,/ TVD Reference Elevation: 65.790 ft above MSL Borehole: Plan C -28B Seabed / Ground Elevation: 37.290 ft above MSL UWI / API #: Borehole- 1133137 / 500292086702 Magnetic Declination: 22.134 ° Survey Name: C-28B (P4b) Total Field Strength: 57694.580 nT Survey Date: February 02, 2010 Magnetic Dip Angle: 80.936 ° Tort / AHD / DDI / ERD Ratio: 176.834 ° / 6011.445 ft / 6.128 / 0.666 Declination Date: July 01, 2010 Grid Coordinate System: NAD27 Alaska State Plane, Zone 04, US Feet Magnetic Declination Model: BGGM 2009 Location Lat / Long: N 70° 17' 42 96745 ", W 148° 40' 8.73627" North Reference: True North Location Grid N/E Y /X: N 5959353.000 ftUS, E 664359.000 ftUS Grid Correction: 0.000 ° III Grid Convergence Angle: 1.25299798 ° Total Corr Mag North ->True North: 22.134 ° Grid Scale Factor: 0.99993069 Local Coord Referenced To: Well Head Exclusion Zone MD Intl Azim True TVDSS TVD VSEC NS EW TF DLS Directional Exclusion Zone Northing Easting Commend (k) ( °) r) (ft) (ft) (ft) (ft) (k) ( °) ( ° /100ft) Difficulty Index Alert An (508) (ftUS) pi CM2 7980.83 35.97 191.06 6453.00 6518.79 3779.04 - 3773.97 - 657.69 176.04L 0.78 5.57 44.90 5955565.82 663784.03 Tie-In Survey 8393.20 33 03 190.69 6793.32 6859.11 4009 46 - 4002.39 - 702.63 171.06R 0.52 5.62 41.95 5955336.49 663744.10 8400.00 32.95 190.71 6799.03 6864.82 4013.12 -4006.03 - 703.32 171.04R 1.14 5.62 41.88 5955332.84 663743.50 Top Whipstock 8450.00 32.39 190.88 6841.12 6906 91 4039.81 -4032.54 - 708.37 65R 1.14 5.62 41.32 5955306.22 663739.02 Base Whipstock 8466.00 33.24 194.05 6854.56 6920 35 4048 42 -4041.00 - 710.25 HS 12.00 5.63 42.24 5955297.72 663737.33 Cry 4 /100 8479.00 33.24 194.05 6865.44 6931.23 4055.52 - 4047.92 - 711.98 98.98R 0.00 5.63 42.24 5955290.77 663735 76 8500.00 33.12 195 57 6883.01 6948 80 4066 97 -4059.03 - 714.91 97.71R 4.00 5.64 42.14 5955279.60 663733.06 8600.00 32.80 202 90 6966.95 7032.74 4121 29 -4110.31 - 732.80 91.55R 4.00 5.67 41.87 5955227.94 663716 31 CM1 8657.15 32 81 207.12 7015.00 7080.79 4152.08 -4138.35 - 745.88 88R 4.00 5.68 41.85 5955199.62 663703.84 8700.00 32.91 210 28 7050.99 7116 78 4175 00 -4158.74 - 757.04 85.35R 4.00 5.69 41.90 5955179.00 663693.13 8800.00 33.44 217.53 7134.73 7200.52 4227.87 -4204.06 - 787.53 79.28R 4.00 5.71 42.25 5955133.02 663663.64 8900.00 34.38 224.50 7217.75 7283.54 4279.62 -4246.07 - 824.12 73.5R 4.00 5.74 42.89 5955090.23 663627.98 End Cry 8916.08 34.57 225.58 7231.00 7296.79 4287.82 - 4252.50 - 830.56 HS 4.00 5.74 43 03 5955083.66 663621.68 THRZ 9127.39 34.57 225.58 7405.00 7470.79 4395.34 -4336.42 - 916.21 HS 0.00 5.75 43.03 5954997.89 663537.90 BHRZ/LCU /TKNG 9349.63 34.57 225.58 7588.00 7653.79 4508.43 4424 67 - 1006.28 HS 0.00 5 76 43. 03 5954907.70 663449.78 TJD 9822.05 34.57 225.58 7977.00 8042.79 4748.82 -4612.28 - 1197.76 HS 0.00 5.79 43.03 595471696 663262.46 Fault 1 9825.00 34.57 225.58 7979.43 8045.22 4750.32 4613 45 - 1198.95 HS 0.00 5.79 43.03 5954714.76 663261.29 TJC 9893.70 34.57 225.58 8036.00 8101.79 4785.28 - 4640.73 - 1226.80 HS 0.00 5.79 43.03 5954686.88 663234.05 TJB 10072.22 34.57 225 58 8183.00 8248.79 4876.12 -4711.63 - 1299.16 HS 0.00 5.80 43.03 5954614.43 663163.27 TJA 10183.95 34.57 225.58 8275.00 8340.79 4932.97 -4756.00 - 1344.44 HS 000 5.81 43.03 5954569.08 663118.97 • TSGR 10295.68 34.57 225.58 8367.00 8432.79 4989.82 -4800.37 - 1389.72 HS 0.00 5.81 43.03 5954523.73 663074.67 7" Csg 10295.68 34.57 225.58 8367.00 8432.79 4989.82 -4800.37 - 1389.72 HS 0.00 5 81 43. 03 5954523.73 663074.67 TSHU 10330.90 34.57 225.58 8396.00 8461.79 5007.74 -4814.35 - 1404.00 HS 0.00 5.82 43.03 5954509.44 663060.71 TSAD 10436.56 34.57 225.58 848300 8548.79 5061.51 -4856.31 - 1446.82 HS 0.00 5.81 43.03 5954466.56 663018.81 Cry 8/100 10477.77 34.57 225.58 8516.94 8582.73 5082.48 - 4872.68 - 1463.53 65.12L 0.00 5.82 43.03 5954449.83 663002.47 10500.00 35.35 222.80 8535.16 8600.95 5094.03 -4881.81 -1472 40 62.84L 8 00 5.83 43.94 5954440.51 662993.80 42SB 10570.95 38.23 214.62 8592.00 8657.79 513407 -4914.97 - 1498.84 56.29L 8.00 5.86 47.13 5954406.79 662968.09 10600.00 39.56 211.59 8614.61 8680.40 5151.78 -4930.25 - 1508.79 53.92L 8.00 5.85 48.53 5954391.29 662958.48 TCGL 10677.95 43. 48 204.25 8673.00 8738.79 5202 81 -4975.89 - 1532.84 48.43L 8.00 5.90 52.55 5954345.13 662935.44 10700.00 44.67 202.38 8688.84 8754.63 521811 -4989.98 - 1538.90 47.08L 8.00 5.89 53.74 5954330.92 662929.68 BCGL 10780.79 49.25 196.13 8744.00 8809.79 5277.08 - 5045.69 - 1558.24 42.81L 8.00 5.93 58.27 5954274.80 662911.57 10800.00 50.38 194.77 8756.39 8822.18 5291.72 - 5059.83 - 1562.15 41.94L 8.00 5.93 59.39 5954260.58 662907.98 23SB 10887.51 55 73 189.12 8809.00 8874.79 5360.99 - 5128.21 - 1576.49 38.53L 8.00 5.97 64.59 5954191.91 662895.13 10900 00 56.51 188.37 8815 96 8881.75 5371.18 - 5138.46 - 1578.07 38.11L 8.00 5.96 65.35 5954181.63 662893.78 11000.00 62.93 182 84 8866.38 8932.17 5454.96 - 5224.33 - 1586.35 35.32L 8.00 6.00 71.53 5954095.61 662887.37 22TS 11017.07 64.05 181.96 8874.00 8939.79 5469.57 - 5239.59 - 1586.99 34.93L 8.00 6.03 72.60 5954080.34 662887.07 11100.00 69.54 177.91 8906.67 8972.46 5541.41 - 5315 76 - 1586.85 33.33L 8.00 6.01 77.86 5954004.19 662888.88 PG0C 11124.80 71.21 176.76 8915.00 8980 79 5563.07 - 5339.09 - 1585.76 32.94L 8.00 6.07 79.44 5953980.89 662890.47 21TS 11161.25 73. 66 175.11 8926.00 8991.79 5594.96 - 5373.75 - 1583.29 32.44L 8.00 6.04 81.78 5953946.30 662893.70 Drilling Office 2009.1.716.0 Prudhoe Bay Unit - WOA \C- PAD \C -28 \Plan C- 28B \C -28B (P4b) 5/14/2010 9:40 AM Page 1 of 2 Exclusion Zone MD Inc) Azim True TVDSS TVD VSEC NS EW TF DLS Directional Exclusion Zone Northing Easting ' Comments (ft) (°) ( °) (ft) (ft) (ft) (ft) (ft) (`) ( Difficulty Index Alert �9;� (ftUS) (ftUS) 11200.00 76.28 173.40 8936.05 9001.84 5628.85 - 5410.98 -1579 54 32L 8 00 6.05 84.27 5953909.16 662898.26 11300.00 83.10 169.14 8953.94 9019.73 5715.58 - 5508.14 - 1564.58 31.23L 8 00 6.10 89.27 5953812.36 662915.35 11400.00 89.95 165.00 8960.00 9025.79 5799.92 - 5605.34 - 1542.24 30.98L 8.00 6.13 82.83 5953715.68 662939.80 End Cry / Tgt 1 11400.70 90.00 164.97 8960.00 9025.79 5800.50 - 5606.02 - 1542.06 HS 8.00 6.13 82.78 5953715.00 662940.00 HOT 11400.70 90.00 164.97 8960.00 9025.79 5800.50 - 5606.02 - 1542.06 HS 8.00 6.18 82.78 5953715.00 662940.00 Fault 5 11775.00 90.00 164.97 8960.00 9025.79 6109.52 - 5967.51 - 1444.98 HS 000 6.13 82.78 5953355.75 663044.95 TD / 4-1/2" Lnr 11864.34 90.00 164.97 8960.00 9025.79 6183.28 - 6053 79 - 1421.81 0.00 6.17 82.78 5953270.00 663070.00 Survey Error Model: ISCWSA Rev 0 "` 3 -D 95.000% Confidence 2.7955 sigma Survey Program: MD From MD To EOU Freq (ft) Survey Tool Type Borehole / Survey 0.000 30.790 Act Stns SLB_NSG +MSHOT -Depth Only C -28 / C -28 30.790 8393.200 Act Stns SLB_NSG+MSHOT C -28 / C -28 8393.200 8750 000 1/100 000 SLBINC +TREND Plan C-28B / C -28B (P4b) 8750 000 10295.681 1/100.000 SLB__MWD +GMAG Plan C-28B / C-28B (P4b) 10295 681 11864 338 1/100.000 SLB_MWD +GMAG Plan C-28B / C -28B (P4b) Legal Description: Northing (Y) Easting (X) • Surface: 3413.5 FSL 1033.7 FEL S19 T11N R14E UM 5959353.000 664359.000 Tie -In 4919 FSL 1705 FEL 30 Tt t N R14EUM 5955565.820 663784.030 Tgt 1: 3087 FSL 2596 FEL 30 T11N R14EUM 5953715.000 662940.000 FSL 2478 FEL 11 14 TD / BHL: 2639 SL 24 8 30 T N R14EUM 5953270.000 663070.000 • Drilling Office 2009.1.716.0 Prudhoe Bay Unit - WOA \C- PAD \C -28 \Plan C- 28B \C -28B (P4b) 5/14/2010 9:40 AM Page 2 of 2 by • • Schlumberger WELL FIELD STRUCTURE C -28B (P4b) ( Prudhoe Bay Unit - WOA C -PAD Magnetic Parameters Surface Locale NA021 Alaska Stale Plane, Zone 04, US Feel Miarallaneaue Model: BOOM 2009 Dip_ 80936 Date: July 01, 2010 Lat: N 70 17 42 981 Nortfung 5959353008US D(54 Cony: 125299198 Slot: C -28 TOO Pet Rotary Table(6579ft above MSL) Mag Dec 22.134 FS: 51694 .807 Lon: W 14840 8.136 Easting: 66435910 flUS Scale Fact: 099993069 Plan: C- 2801P40) Sr, Dale: February 02, 2010 4000 4500 5000 5500 6000 6500 28 Tie-In Survey Top Whipstock Base Whipstock Cry 4/100 7000 - 7000 End Cr, 7500 7500 O C I I Fault 1 y 8000 ••••• 8000 cn 8500 gssCVO •: {H .:::- crvsrteo ••-••-.•_::_::_::_ °_.:_::_: _� �::_::_. _.._::_:::::_::_ :;:'_::_: 8500 _.._.._.._.._..._r.._.._.. _.._.._.._.._.._. _....._.._.._.. _.._..-.. _. _.. . .., ._.._.._....._.._.._.._..�.._.. _.. _.._.._.. _.._.. _..�.. _.. _. _.._.._.._.._.._ _ _.._.._.._.._.. -.._.. .._.. 'a- .._ ....._ End Crv TSt 1 ...._.._.. .._.._.._.._.. _.. -.._ _.. _. _.._.._.._....._....._.._.._. ._.._.._.._..- .i_.._.._.._.._.. _.._.. _.._.s_.._.._.._.. .._. _ ._.._.._.._.._ _.._.._. _ .. .._. _.._.._.._.._ _.._. . B . Fault 5 TD 1 4112" Lnr 9000 :,:;. .s.gulsc =.s.;reka3r:.nke>. =.ik ra rs;rxr:.v rssi+u. e.;m.s. s::.s. s.:as::ek;•.a :s.!:ekics:ra. : _. ca .. . ; a�;aa: : r a az< :::. :r a..><::oa: #:; ;:. 9000 -28 r Lnr 4000 4500 5000 5500 6000 6500 Vertical Section (ft) Azim = 199.32 °, Scale = 1(in):500(ft) Origin = 0 N / -S, 0 E/ -V by • • Schlumberger WELL FIELD RUCTURE C -PAD C -28B (P4b) I ST Prudhoe Bay Unit - WOA Magnetic Parameters Surface LorahOn NA1327 Alaska Stale Plane. Zane 04. US Feel Miscellaneous Mat 8GGM 2009 00 X 936 Date: July 01, 2010 Lal: N 70 17 42 967 Northing: 595935300 DUS end Cann 125299798• Slot'. C -26 tle T70 Ref: Rotary mews ran above Mall Mag Dec: 22.134° FS 57694 6nT Lon: W 148 40 8 736 Castile 66435900 SOS Sr* Fact: 0 99993069 Play: C- 28810451 Se, Date: February 02. 2010 -1800 -1500 -1200 -900 -600 -300 28 -3900 -3900 Tie-In Survey Top Whipstock Base V(Ihipstock Cry 4/100 -4200 s End Gr{L a -4200 •N -4500 -4500 Fault 1 C-28B Flt 1 7980ss 7 Cs' -4800 - ( -4800 A Cry 8/100 Z C -28B Flt 2 88050ss O 9.1/8" Csg O co C -28A C ,I 5100 -5100 a1 C2 C-2: 9 F0 3 8925ss co Cl) V V V v l -5400 4 -5400 7 ^Lnr C -28 C -28B It 4 8440ss End Cry / Tgt t 11 ) k -5700 -5700 Fault 5 C-28B Flt 5 8960ss -6000 -6000 TD / 4 -1/2•' Lnr C -288 (P4b) -1800 -1500 -1200 -900 -600 -300 «< W Scale = 1(in):300(ft) E »> BPPASSPORT • Anticollision Report Company: North America - ALASKA - BP Local Co-ordinate Reference: Well C-28 Project: Prudhoe Bay TVD Reference: Plan C-28B @ 65.79ft (Nabors XES) Mei eme PB C MD Reference: Plan C.28B-g 65J Site Error: 0.00ft North Reference: True Reference-Well:— C-28 Weil Error: O.00ft Output errors are at 1.00 sigma Reference Wellbore Plan C-28B Database: EDM .16 - Anc Prod - WH24P Reference Design: Plan #4 C-288 Offset TVD Reference: Offset Datum Reference Plan #4 C-28B Filter type: GLOBAL FILTER APPLIED: All wellpaths within 200+ 100/1000 of refen Interpolation Method: MD Interval 5.00ff Error Model: ISCWSA Depth Range: 8,450.00 to 11,864.34ft Scan Method: Tray. Cylinder North Results-Limited-byMaxirnurncenter-center-distance —Error-Surface:— Elliptical-Conic Survey Tool Program Date 5/14/2010 From To - (rt) (ft) Survey (Weilbore) Toot Name Description 93.20 8,393.20 C-28 Srvy 1 BOSS Gyro (C-28) BOSS-GYRO Sperry-Sun BOSS gyro multishot 8,393.20 8,750.00 Plan #4 C-28B (Plan C-28B) INC+TREND Inclinometer + known azi trend 8,750.00 10,295.00 Plan #4 C-28B (Plan C-28B) MWD+IFR+MS MWD + IFR + Multi Station 10,295.00 11,864.34 Plan #4 C-28B (Platt C-28B) MWD+IFR+MS MWD + IFR + Multi Station 57T472010 9T50:25AM Page 2 of 4 COMPASS 2003.16 Build 71 BPPASSPORT Anticol Ion epo Company: North America - ALASKA - BP Local Co- ordinate Reference: Well C -28 Project: Prudhoe Bay TVD Reference: Plan C -28B @ 65.79ft (Nabors XES) Reference Site. PB C Pad MD e: — -PlanC- 286 Site Error: O.00ft North Reference: True Reference - Wei- -- C 28 -Survey -Cate Well Error: 0.00ft Output errors are at 1.00 sigma Reference Wellbore C -28B Database: EDM .16 - Anc Prod - WH24P Reference Design: Plan #4 C -28B Offset TVD Reference: Offset Datum Summary Reference Offset Centre to No-Go Allowable Measured Measured Centre Distance Deviation Warning Site Name Depth Depth Distance (ft) from Plan - - - Design - (ft) (ft) — GC-3 OC =3B = GC -36 GC =3B 9;793..75 7,925.00 676.50 646.47 49.35 Pass - MajorRisk PB B Pad B -03 - B=03 = B =03 - " Out of range B -03A - B -03A - B -03A Out of range B -03B - B -03B - B -03B 11,860.61 10,030.00 745.76 670.06 75.99 Pass - Major Risk 13-08 - Plan 9, B -08A - Plan 9 Out of range B -30 - B -30 - B -30 11,035.62 10,605.00 404.92 752.20 - 346.29 FAIL - Major Risk B=30 = B=30A = B =3&A 11,035.62 10,605.00 404:92 75220-3 F MajorRisk PB C Pad C -05 - G -05 = C= O5 - - Out of C -05 - C -05A - C -05A Out of range C- 05_DIMS - C -05 - C -05 Out of range C- 05_DIMS - C -05A - C -05A Out of range C -06 - C -06 - C -06 Out of range £= 06=C- 06A -C-00A - 1 0;062:74 1 1;384.5' 1,144.92 509.49 - Pass- MajorRisk C-06 - C- 06APB1 - C- 06APB1 Out of range C -06 - C -06B - C -06B Out of range C- 06_DIMS - C -06 - C -06 Out of range C- 06_DIMS - C -06A - C -06A Out of range C 06_DIMS--- C- 06APB1--- C- 06APB1 Out of -rang C-06_DIMS - C -06B - C -06B Out of range C -07 - C -07 - C -07 Out of range C -07 - C -07A C -07A Out of range C -23 - C -23A - C -23A 10,458.13 11,662.00 799.86 1,129.50 155.75 Pass - Major Risk -C-24 - Outof range C -24 - C -24A - C -24A Out of range C -25 - C -25 - C -25 Out of range C -25 - C -25A - C -25A Out of range C -25 - C -25B - C -25B Out of range C-2C-26 - C -26 Out of range C -26A - C -26A - C -26A Out of range C -27 - C -27 - C -27 Out of range C-27 - -C 7A = C =27A - Out of ianye C-27 - C- 27APB1 - C- 27APB1 Out of range C -27 - C -27B - C -27B Out of range C-28 - C -28 - C -28 8,724.39 8,735.00 29.21 69.24 -37.68 FAIL - Major Risk C -28 - C -28A - C -28A 8,724.39 8,735.00 29.21 69.24 -37.68 FAIL - Major Risk C-28_DIMS- C-28 - C 28 - Out of range C-28_DIMS - C -28A - C -28A Out of range C -29 - C -29 - C -29 Out of range C -29A - C -29A - C -29A Out of range C -30 - C -30A - C -30A Out of range C -31 - C•3 -1.A -- C -31A— -- - -- Out -of -range C -31 - C -31 B- C -31 B Out of range C-31 DIMS - C -31 - C -31 Out of range U- :fi -_ DtMS =3TA - i1A Out of range C -31 DIMS - C -31 B- C -31 B Out of range C- 391_DIMS - C -32_C 39 Out otrange C- 39_DIMS - C -39 - C -39 Out of range C -39 DIMS - C -39 - C -39 Out of range 5/1472010 9:b0 :25AM Page 3 of 4 COMPASS 2003.16 Build 71 Project: Prudhoe Bay • . Site__PB_C_ Part Well: C -28 Wellbore: Plan C -28B Design: Plan #4 C -28B From Surface to TD Scan interval 100 ft Scale 1 : 100 B -30 /A Fail major risk No tolerance lines need be set 0 GC •361GC -38 33010337 30 f 0258 � Zi017 3018 -30A / iwa7 50• 9935 0800 40U �` 300 / = 60 / Q77: _ , / 9691 - 281C -28 / , - ! 200 \ , // \ 1 82 , / / 1093 ' i� /I' C- 2810 -28A 1 982 / ( 1 UU / i -.1p,--,v N ' ti � p4g\ 11 n / /`� � �� '� " 'f` 90 t u 270 24 '' 77 ,647 : talk � ' + f t i 11100 / * , ',� a rt S+ t . 11167 / \ ^� � I - ' + \ 1\10 / ' // / / i 1 f32 � "C / 31 • / 11411 - 240 120 1503 401 1159 — - 4,44 " 1:586 � =- + 500 74 11858 600 210 150 701T 180 Travelling Cylinder Azimuth (TFO +AZI) [1 vs Centre to Centre Separation [200 ft/in] Project: Prudhoe Bay • . Site:_ PR C Pad_ Well: C -28 Wellbore: Plan C -28B Design: Plan #4 C -28B From Surface to TD Scan interval 100 ft _ Scale 1 : 100 B -30 /A Fail major risk No tolerance lines need be set 0 175 330 30 150 125 100 300 60 75 5! ---..........,\ �`_ , , A • ' \ \ . 270 -( ll 7 / -.Nu t / ( uR NIP V ' • -- t' 90 8.7a Q 1 8972 Ili �, 9066 J 91 C-28/C•28A ' ` .► t.- trot. -tu \ \\\\ \ a / :_‘. A „, 75 / / /120 moi 1 1 210 150 1 i 180 Travelling Cylinder Azimuth (TFO +AZI) [°] vs Centre to Centre Separation [50 Wm] Page 1 of 1 • • Schwartz, Guy L (DOA) From: Reynolds, Charles [Charles. Reynolds @bp.com] Sent: Monday, May 24, 2010 11:02 AM To: Schwartz, Guy L (DOA) Subject: RE: C -28B PTD 210 -063 Attachments: C -28B Cement Calculations.xls; C -28B AOGCC Permit to Drill.doc; C -28B AOGCC Permit to Drill. pdf Good catch Guy, should be 229 sks and 265.7 cu /ft. l attached corrections. • Charles Reynolds BP Alaska Rotary Drilling Ph: (907) 564 -5480 Cell: (907) 575 -6234 Email: Charles.Reynolds @BP.com From: Schwartz, Guy L (DOA) [ mailto:guy.schwartz @alaska.gov] Sent: Monday, May 24, 2010 10:56 AM To: Reynolds, Charles Subject: C -28B PTD 210 -063 Charles, Something doesn't look right on the cement calcs for the 4.5 liner. Volumes is ok (47bbls ) but sack count/cf3 look off. Thanks, Guy Schwartz Senior Petroleum Engineer AOGCC 793 -1226 (office) 444 -3433 (cell) 5/24/2010 • 0 5/24/2010 Field Calculations Schlumberger Well: C -28B Company Rep: Charles Reynolds Slurry: I Annualus Casing Size ID OD bbl/ft Bottom or Depth Top Total Excess Shoe 4 1/2" (12.6#) 3.958 4 1/2 0.015218 11864 11784 80 0 Open Hole 6 1/8" OH 4 1/2" (12.6#) 6.125 4.5 0.016773 11864 10213 1651 40 Liner Lap 7" (264) 4 1/2" (12.6#) 6.276 4.5 0.018592 10213 10063 150 0 200 ft excess 7" (26#) 4 " (15.7 #': 6.276 4 0.02272 10063 9863 2._ .. 0 Slurry Volumes: BBLS BBLS + Excess I Shoe Volume 1.2 1.2 Open Hole Annular Volume 27.7 38.8 Lap Volume 2.8 2.8 200 ft Above Lap 4.5 4.5 Displacement: I Pipe Size I.D. bbl/ft Bottom or Depth Top Total I B) Drill Pipe 4" (15.7 #) - 0.010197785 10063 0 10063 ft A) Casing Volume 4.5" (12.6#) 3 0.015218345 11864 10063 1801 ft 11864 BBLS Total Displacement Drill Pipe Displacement I 102.6 I 130.0 Liner Displacement 27.4 Pump Schedule: Pressure test 4000 psi Pre -Flush (1420 /CW100) 30 bbls Mudpush 30 bbls 11.0 ppg Purr'. Cement 47.3 bbls 15.8 ppg Drop Dart Pump Displacement 130.0 bbls 9.0 pPg Pick Up Liner Wiper 102.6 bbls psi Bleed Off Check Floats Pre - Flush r§ Shoe 23.9 bbls Mudpush (d? Shoe 53.9 bbls Cement (g shoe 83.9 bbls Water Requirments: Cement bbls 265.7 cu.ft. cu.ft/sk 229.0 sks gal /sk 28.6 bbls Mud Push 30.0 bbls CW100 30 bbls I Total Water: 108.6 bbls I Liner i Alaska Department of Natural esources Land Administration System Page 1 of/ Alaska Mapper Land Records /Status Plats Recorder's Search State Cabins Natural Resources I Alaska DNR Case Summary File Type: ADL File Number: 28305 Printable Case File Summary See Township, Range, Section and Acreage? 1 New Search L!) Yes 0 No LAS Menu 1 Case Abstract 1 Case Detail 1 Land Abstract File: ADL 28305 `Aar Search for Status Plat Updates As of 05/20/2010 Customer: 000107377 BP EXPLORATION (ALASKA) INC PO BOX 196612/900 E. BENSON BL ATTN: LAND MANAGER - ALASKA ANCHORAGE AK 995196612 Case Type: 784 OIL & GAS LEASE COMP DNR Unit: 780 OIL AND GAS File Location: DOG DIV OIL AND GAS Case Status: 35 ISSUED Status Date: 08/19/1965 Total Acres: 2480.000 Date Initiated: 05/28/1965 Office of Primary Responsibility: DOG DIV OIL AND GAS Last Transaction Date: 12/04/2006 Case Subtype: NS NORTH SLOPE Last Transaction: AA - NRB ASSIGNMENT APPROVED Meridian: U Township: 011N Range: 014E Section: 17 Section Acres: 640 Search Plats Meridian: U Township: O11N Range: 014E Section: 18 Section Acres: 599 Meridian: U Township: 011N Range: 014E Section: 19 Section Acres: 601 Meridian: U Township: 011N Range: 014E Section: 20 Section Acres: 640 Legal Description 05 -28 -1965 * ** SALE NOTICE LEGAL DESCRIPTION * ** C14- 12611N 14E UM 17,18,19,20 2480.00 U- 3- 7 End of Case Summary Last updated on 05/20/2010. http: / /dnr.alaska.gov /projects /las /Case Summary.cfin ?FileType= ADL &FileNumber = 2830... 5/20/2010 Alaska Department of Natural esources Land Administration System Page 1 of ( Alaska Mapper Land Records /Status Plats Recorder's Search State Cabins Natural Resources 1 Alaska DNR Case Summary File Type: ADL File Number: 28310 Printable Case _ File Summary See Township, Range, Section and Acreage? New Search iii Yes 0 No LAS Menu 1 Case Abstract 1 Case Detail 1 Land Abstract File: ADL 28310 mar' Search for Status Plat Updates As of 05/20/2010 Customer: 000107377 BP EXPLORATION (ALASKA) INC PO BOX 196612/900 E. BENSON BL ATTN: LAND MANAGER - ALASKA ANCHORAGE AK 995196612 Case Type: 784 OIL & GAS LEASE COMP DNR Unit: 780 OIL AND GAS File Location: DOG DIV OIL AND GAS Case Status: 35 ISSUED Status Date: 08/19/1965 Total Acres: 2491.000 Date Initiated: 05/28/1965 Office of Primary Responsibility: DOG DIV OIL AND GAS Last Transaction Date: 12/04/2006 Case Subtype: NS NORTH SLOPE Last Transaction: AA -NRB ASSIGNMENT APPROVED Meridian: U Township: 011N Range: 014E Section: 29 Section Acres: 640 Search Plats Meridian: U Township: 011N Range: 014E Section: 30 Section Acres: 604 Meridian: U Township: 011N Range: 014E Section: 31 Section Acres: 607 Meridian: U Township: O11N Range: 014E Section: 32 Section Acres: 640 Legal Description 05 -28 -1965 ** *SALE NOTICE LEGAL DESCRIPTION * ** C14 -131 11N 14E UM29,30,31,32 2491.00 U- 3- 7 End of Case Summary Last updated on 05/20/2010. http://dnr.alaska.gov/projects/las/Case Summary.cfm?FileType=ADL&FileNumber=2831... 5/20/2010 • • TRANSMITTAL LETTER CHECKLIST WELL NAME PTD# •? /OO.c..? ✓ Development Service Exploratory Stratigraphic Test Non - Conventional Well FIELD: „1",6 4Y POOL: 3q4/ 4d 2YAY c Circle Appropriate Letter / Paragraphs to be Included in Transmittal Letter CHECK ADD -ONS WHAT (OPTIONS) TEXT FOR APPROVAL LETTER APPLIES MULTI LATERAL The permit is for a new wellbore segment of existing well (If last two digits in Permit No. , API No. 50- - - API number are between 60 -69) Production should continue to be reported as a function of the original API number stated above. PILOT HOLE In accordance with 20 AAC 25.005(0, all records, data and logs acquired for the pilot hole must be clearly differentiated in both well name ( PH) and API number (50- - - ) from records, data and logs acquired for well SPACING The permit is approved subject to full compliance with 20 AAC EXCEPTION 25.055. Approval to perforate and produce / inject is contingent upon issuance of a conservation order approving a spacing exception. assumes the liability of any protest to the spacing exception that may occur. DRY DITCH All dry ditch sample sets submitted to the Commission must be in SAMPLE no greater than 30' sample intervals from below the permafrost or from where samples are first caught and 10' sample intervals through target zones. Non - Conventional Please note the following special condition of this permit: Well production or production testing of coal bed methane is not allowed for (name of well) until after (Company Name) has designed and implemented a water well testing program to provide baseline data on water quality and quantity. (Company Name) must contact the Commission to obtain advance approval of such water well testing program. Rev: 1/11/2008 • ., - 1 : y { 7; - §Field & Pool PRUDHOE BAY, PRUDHOE OIL - 640150 Well Name: PRUDHOE BAY UNIT C-28B Program DEV Well bore seg ❑ PTD#: 2100630 Company BP EXPLORATION (ALASKA) INC Initial Class /Type DEV / PEND GeoArea 890 Unit 11650 On /Off Shore On Annular Disposal ❑ Administration 1 1 Permit fee attached NA 2 Lease number appropriate Yes 3 Unique well name and number Yes 14 Well located in a defined pool Yes 1 5 Well located proper distance from drilling unit boundary Yes 6 Well located proper distance from other wells Yes 17 Sufficient acreage available in drilling unit Yes 2560 acres. 8 If deviated, iswellbore plat included Yes 9 Operator only affected party Yes 1 10 Operator has appropriate bond in force Yes Blanket Bond # 6194193. 111 Permit can be issued without conservation order Yes Appr Date 12 Permit can be issued without administrative approval Yes ACS 5/20/2010 113 Can permit be approved before 15 -day wait Yes III 114 Well located within area and strata authorized by Injection Order # (put IO# in comments) (For NA - 15 All wells within 1/4 mile area of review identified (For service well only) NA 16 Pre- produced injector: duration of pre production Less than 3 months (For service well only) NA 17 Nonconven. gas conforms to AS31.05.030(j.1.A),(j.2.A-D) NA 1 18 Conductor string provided NA Conductor set in C -28A Engineering 1 19 Surface casing protects all known USDWs NA Surface casing set in C -28A 20 CMT vol adequate to circulate on conductor & surf csg NA Surface casing cemented in C -28A 21 CMT vol adequate to tie -in long string to surf csg NA Production casing set in C-28A 122 CMT will cover all known productive horizons Yes Cemented and perfed liner is planned. 23 Casing designs adequate for C, T, B & permafrost Yes 24 Adequate tankage or reserve pit Yes Rig equipped with steel pits. All waste to approved disposal wells. 25 If a re- drill, has a 10-403 for abandonment been approved Yes 310 -155 26 Adequate wellbore separation proposed Yes Proximtiy analysis performed. Failed major risk with B -30 .. Well to be shut in while drilling. 27 If diverter required, does it meet regulations NA Wellhead in place. BOP stack to be installed. Appr Date 28 Drilling fluid program schematic & equip list adequate Yes Max form. Pressure = 3220 psi. (7 ppg EMW) .. Will drill with 8.5 ppg mud. GLS 5/24/2010 1 29 BOPEs, do they meet regulation Yes 30 BOPE press rating appropriate; test to (put psig in comments) Yes MASP= 2340 psi Will test BOP to 3500 psi III 31 Choke manifold complies w/API RP -53 (May 84) Yes 1 32 Work will occur without operation shutdown Yes 33 Is presence of H2S gas probable Yes H2S on C pad. Rig has sensors and alarms. 1 34 Mechanical condition of wells within AOR verified (For service well only) NA 35 Permit can be issued w/o hydrogen sulfide measures No Max level H2S on Pad was 101ppm for well B -30A (9/21/09). Geology 1 36 Data presented on potential overpressure zones NA Appr Date ' 37 Seismic analysis of shallow gas zones NA ACS 5/20/2010 38 Seabed condition survey (if off- shore) NA 39 Contact name /phone for weekly progress reports [exploratory only] NA Geologic Engineering blic Commissioner: Date: Com issioner: Date •ner Date ;r . / Well History File APPENDIX Information of detailed nature that is not particularly germane to the Well Permitting Process but is part of the history file. To improve the readability of the Well History file and to simplify finding information, information of this nature is accumulated at the end of the file under APPENDIX. No special effort has been made to chronologically organize this category of information. Sperry-Sun Drilling Services LIS Scan Utility $Revision: 3 $ LisLib $Revision: 4 $ Tue Aug 31 14:33:45 201G Reel Header Service name LISTPE Date 10/08/31 Origin STS Reel Name UNKNOWN Continuation Number 01 Previous Reel Name UNKNOWN Comments STS LIS Writing Library. Scientific Technical Services Tape Header Service name LISTPE Date 10/08/31 Origin STS Tape Name UNKNOWN Continuation Number 01 Previous Tape Name UNKNOWN Comments STS LIS Writing Library. Scientific Technical Services Physical EOF Comment Record TAPE HEADER Prudhoe Bay MWD/MAD LOGS WELL NAME: C-28B API NUMBER: 500292086702 OPERATOR: BP Exploration (Alaska) , Inc. LOGGING COMPANY: Sperry Drilling TAPE CREATION DATE: 31-AUG-10 JOB DATA MWD RUN 2 MWD RUN 3 MWD RUN 4 JOB NUMBER: -MW-0007409879 -MW-0007409879 -MW-0007409879 LOGGING ENGINEER: B. SCHULZE B. SCHULZE B. SCHULZE OPERATOR WITNESS: B. DECKER D. FERGUSON D. FERGUSON MAD RUN 4 JOB NUMBER: -MW-0007409879 LOGGING ENGINEER: B. SCHULZE OPERATOR WITNESS: D. FERGUSON SURFACE LOCATION SECTION: 19 TOWNSHIP: 11N RANGE: 14E FNL: 1866 FSL: FEL: FWL: 3924 ELEVATION (FT FROM MSL 0) KELLY BUSHING: DERRICK FLOOR: 65.29 GROUND LEVEL: _39.09 WELL CASING RECORD OPEN HOLE CASING DRILLERS Q(0—0(93 oota3 � f BIT SIZE (IN) SIZE (IN) DEPTH (FT) 1ST STRING 8 . 500 9. 625 8487.0 2ND STRING 6. 125 7.000 10339.0 3RD STRING PRODUCTION STRING REMARKS: 1. ALL DEPTHS ARE MEASURED DEPTH (MD) UNLESS OTHERWISE NOTED. THESE DEPTHS ARE BIT DEPTHS. 2. ALL VERTICAL DEPTHS ARE TRUE VERTICAL DEPTH (TVD) . ONLY INVERT/ REVERT SECTIONS GREATER THAN 30' TVT ARE PRESENTED. 3. MWD RUN 1 WAS DIRECTIONAL ONLY TO POSITION THE WHIPSTOCK, MILL THE WINDOW, AND DRILL A BIT OF RATHOLE - ROP DATA ARE PRESENTED. THE TOP OF THE WINDOW IS AT 8487 'MD/6928 'TVD. 4 . MWD RUNS 2-4 COMPRISED DIRECTIONAL, DUAL GAMMA RAY (DGR) UTILIZING GEIGER-MUELLER TUBE DETECTORS, ELECTROMAGNETIC WAVE RESISTIVITY- PHASE 4 (EWR-P4) , AND DRILLSTRING DYNAMICS SENSOR (DDSr) . MWD RUN 2 ALSO INCLUDED PRESSURE WHILE DRILLING (PWD) . MWD RUNS 3, 4 ALSO INCLUDED COMPENSATED THERMAL NEUTRON POROSITY (CTN) , AZIMUTHAL LITHO- DENSITY (ALD) , AND AT-BIT INCLINATION (ABI) . ROTATED MAD PASS DATA WERE ACQUIRED OVER THE OPEN HOLE INTERVAL WHILE POOH AFTER REACHING FINAL TD. 5. LOG AND MERGED DIGITAL MWD DATA WERE SHIFTED TO A SCHLUMBERGER CASED HOLE GR RUN IN C-28A ON 9 MAY 2007. SHIFTING INSTRUCTIONS WERE PROVIDED VIA E-MAIL FROM D. DORTCH (SAIC/BP) DATED 24 AUGUST 2010, QUOTING AUTHORIZATION FROM JENNIFER FLIGHT (BP) . MAD DATA WERE CORRECTED (SHIFTED) TO THE SHIFTED MWD DATA. LOG HEADER DATA AND ANNOTATIONS RETAIN ORIGINAL DRILLER'S DEPTH REFERENCES. THIS SHIFTED MWD LOG IS THE PDCL FOR C-28B. 6. MWD RUNS 1-4 REPRESENT WELL C-28B WITH API# 50-029-20867-02. THIS WELL REACHED A TOTAL DEPTH (TD) OF 11864 'MD/9026'TVD. SROP = RATE OF PENETRATION WHILE DRILLING SGRC = DUAL GAMMA RAY COMBINED SEXP = EWR PHASE-4 9" 2 MHZ PHASE SHIFT RESISTIVITY SESP = EWR PHASE-4 15" 2 MHZ PHASE SHIFT RESISTIVITY SEMP = EWR PHASE-4 27" 2 MHZ PHASE SHIFT RESISTIVITY SEDP = EWR PHASE-4 39" 1 MHZ PHASE SHIFT RESISTIVITY SFXE = FORMATION EXPOSURE TIME EWR-PHASE-4 TNPS = THERMAL NEUTRON POROSITY-SS MATRIX CTFA = SMOOTHED AVERAGE OAF FAR DETECTOR'S COUNT RATE CTNA = SMOOTHED AVERAGE OF NEAR DETECTOR'S COUNT RATE SBD2 = BULK DENSITY COMPENSATED (RAPID SAMPLE)- LOW COUNT BIN SCO2 = DELTA-RHO (RAPID SAMPLE) - LOW COUNT BIN SNP2 = NEAR DETECTOR PE FACTOR (RAPID SAMPLE)- LOW COUNT BIN ALRPM = ALD RPM REFLECTING BIT-TO-SENSOR DISTANCE (NON-SLIDE INTERVALS) AN 'M' SUFFIX ON CURVE MNEMONICS DENOTES MAD PASS DATA PARAMETERS USED IN POROSITY LOG PROCESSING: HOLE SIZE: FIXED AT 6.125 INCHES MUD WEIGHT: 8. 65 - 8.8 PPG WHOLE MUD CHLORIDES: 14, 000 - 26, 000 PPM FORMATION WATER SALINITY: 11500 PPM CL FLUID DENSITY: 1.0 G/CC MATRIX DENSITY: 2. 65 G/CC LITHOLOGY: SANDSTONE ALL DATA CURVES ARE SMOOTHED TO A STEP OF 0.5 FT, WITH A WINDOW OF 0. 6 FT, EXCEPT FOR SROP AND SGRC. THESE CURVES ARE SMOOTHED WITH A 1. 1 FT WINDOW. GAP FILL IS SET TO 5 FT FOR ALL CURVES. File Header Service name STSLIB.001 Service Sub Level Name Version Number 1 0 0 Date of Generation 10/08/31 Maximum Physical Record65535 File Type LO Previous File Name STSLIB.000 Comment Record FILE HEADER FILE NUMBER: 1 EDITED MERGED MWD Depth shifted and clipped curves.; all bit runs merged. DEPTH INCREMENT: .5000 FILE SUMMARY PBU TOOL CODE START DEPTH STOP DEPTH GR 8240.5 11785.5 RPX 8464 .5 11792.5 FET 8464 .5 11792.5 RPM 8464 .5 11792.5 RPS 8464 .5 11792.5 RPD 8464 .5 11792.5 ROP 8473.5 11850.0 NPHI 10234 .5 11757.5 NCNT 10234 . 5 11757.5 FCNT 10234 . 5 11757.5 PEF 10250. 5 11774.0 DRHO 10250.5 11774.0 RHOB 10250. 5 11774.0 BASELINE CURVE FOR SHIFTS: CURVE SHIFT DATA (MEASURED DEPTH) EQUIVALENT UNSHIFTED DEPTH BASELINE DEPTH GR 8244 .0 8255.0 8249.0 8260.0 8251.5 8262.5 8257 . 5 8268.5 8276.0 8286.5 8290.5 8302. 5 8295.0 8306.0 8297. 5 8308.5 8303.5 8313. 5 8310.5 8319.5 8337.0 8348.5 8344 .0 8353.5 8351.5 8360.5 8361.0 8369.0 8376.0 8387.0 8384 .5 8396.0 8393.0 8404 .0 8398.5 8409.0 8422.0 8431.5 8435.5 8446.5 8443.0 8452.5 8465.5 8473.0 8476.5 8483.0 11857.5 11864 .0 $ MERGED DATA SOURCE PBU TOOL CODE BIT RUN NO MERGE TOP MERGE BASE MWD 2 8528.0 10341.0 MWD 3 10341.0 10923.0 MWD 4 10923.0 11864.0 $ REMARKS: MERGED MAIN PASS. $ Data Format Specification Record Data Record Type 0 Data Specification Block Type 0 Logging Direction Down Optical log depth units Feet Data Reference Point Undefined Frame Spacing 60 . 1IN Max frames per record Undefined Absent value -999 Depth Units Datum Specification Block sub-type. . .0 Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 1 68 0 1 FCNT MWD CP30 4 1 68 4 2 NCNT MWD CP30 4 1 68 8 3 RHOB-MWD G/CC 4 1 68 12 4 DRHO MWD G/CC 4 1 68 16 5 RPD MWD OHMM 4 1 68 20 6 RPM MWD OHMM 4 1 68 24 7 RPS MWD OHMM 4 1 68 28 8 RPX MWD OHMM 4 1 68 32 9 FET MWD HR 4 1 68 36 10 GR MWD FPH 4 1 68 40 11 PEF MWD B/E 4 1 68 44 12 ROP MWD FPH 4 1 68 48 13 NPHI MWD PU 4 1 68 52 14 First Last Name Service Unit Min Max Mean Nsam Reading Reading DEPT FT 8240. 5 11850 10045.3 7220 8240.5 11850 FCNT MWD CP30 130.27 2866.75 697 .89 3047 10234.5 11757.5 NCNT MWD CP30 14385. 6 49145.3 28147 3047 10234.5 11757.5 RHOB MWD G/CC 0.388 3. 6Q,9 2.21717 3048 10250.5 11774 DRHO MWD G/CC -3.719 0.974 -0.031081 3048 10250.5 11774 RPD MWD OHMM 0.58 2000 28.776 6657 8464.5 11792.5 RPM MWD OHMM 0.13 2000 22.2131 6657 8464.5 11792.5 RPS MWD OHMM 0.57 1310.24 12.1006 6657 8464 .5 11792.5 RPX MWD OHMM 0. 46 1780.75 9.82589 6657 8464 .5 11792.5 FET MWD HR 0.21 87. 12 3.6098 6657 8464.5 11792.5 GR MWD FPH 15.54 576.79 100.41 7091 8240.5 11785.5 PEF MWD B/E 0. 95 14 .49 2. 63254 3048 10250.5 11774 ROP MWD FPH 1.01 442.3 107.028 6754 8473.5 11850 NPHI MWD PU 6.73 53. 68 22.9394 3047 10234 .5 11757.5 First Reading For Entire File 8240.5 Last Reading For Entire File 11850 File Trailer Service name STSLIB.001 Service Sub Level Name Version Number 1 0 0 Date of Generation 10/08/31 Maximum Physical Record65535 File Type LO Next File Name STSLIB.002 Physical EOF File Header Service name STSLIB.002 Service Sub Level, Name Version Number 1 0 0 Date of Generation 10/08/31 Maximum Physical Record65535 File Type LO Previous File Name STSLIB.001 Comment Record FILE HEADER FILE NUMBER: 2 EDITED MERGED MAD Depth shifted and clipped curves; all MAD runs merged using earliest passes. DEPTH INCREMENT: .5000 FILE SUMMARY PBU TOOL CODE START DEPTH STOP DEPTH FCNT 10261.0 11761.0 NEHI 10261.0 11761.0 NCNT 10261.0 11761.0 RHOB 10275.0 11775.0 DRHO 10275.0 11775.0 PEF 10275.0 11775.0 GR 10286. 5 11786.5 RPS 10293.5 11793.5 RPM 10293.5 11793.5 RPX 10293.5 11793.5 FET 10293.5 11793.5 RPD 10293.5 11793.5 RAT 10351.0 11852.5 MERGED DATA SOURCE PBU TOOL CODE MAD RUN NO. MAD PASS NO. MERGE TOP MERGE BASE MWD 4 1 10263.0 11864 .0 REMARKS: MERGED MAD PASS. Data Format Specification Record Data Record Type 0 Data Specification Block Type 0 Logging Direction Down Optical log depth units Feet Data Reference Point Undefined Frame Spacing 60 . 1IN Max frames per record Undefined Absent value -999 Depth Units Datum Specification Block sub-type. . .0 Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 1 68 0 1 FCNT MAD CP30 4 1 68 4 2 NCNT MAD CP30 4 1 68 8 3 RHOB MAD G/CC 4 1 68 12 4 DRHO MAD G/CC 4 1 68 16 5 RPD MAD OHMM 4 1 68 20 6 RPM MAD OHMM 4 1 68 24 7 RPS MAD OHMM 4 1 68 28 8 RPX MAD OHMM 4 1 68 32 9 FET MAD HR 4 1 68 36 10 GR MAD API 4 1 68 40 11 PEF MAD B/E 4 1 68 44 12 RAT MAD FPH 4 1 68 48 13 NPHI MAD PU 4 1 68 52 14 First Last Name Service Unit Min Max Mean Nsam Reading Reading DEPT FT 10261 11852. 5 11056.8 3184 10261 11852.5 FCNT MAD CP30 119. 04 3058.34 693.819 3001 10261 11761 NCNT MAD CP30 15409. 6 49848.4 28788.8 3001 10261 11761 RHOB MAD G/CC 0. 003 3.002 2.21189 3001 10275 11775 DRHO MAD G/CC -3. 522 0.305 -0.0841989 3001 10275 11775 RPD MAD OHMM 0.76 2000 57.6585 3001 10293.5 11793.5 RPM MAD OHMM 0.2 435.05 22.2174 3001 10293.5 11793.5 RPS MAD OHMM 0.35 153. 69 15.3321 3001 10293.5 11793.5 RPX MAD OHMM 0.29 261. 95 11.5862 3001 10293.5 11793.5 FET MAD HR 3. 91 168.37 42.544 3001 10293.5 11793.5 GR MAD API 12.48 561.03 45.4159 3001 10286.5 11786.5 PEF MAD B/E 0.9 15.92 2.56351 3001 10275 11775 RAT MAD FPH 0.23 1564 .04 260.071 3004 10351 11852.5 NPHI MAD PU 6.14 55.16 23.2481 3001 10261 11761 First Reading For Entire File 10261 Last Reading For Entire File 11852.5 File Trailer Service name STSLIB.002 Service Sub Level Name Version Number 1 0 0 Date of Generation 10/08/31 Maximum Physical Record65535 File Type LO Next File Name STSLIB.003 Physical EOF File Header Service name STSLIB.003 Service Sub Level Name Version Number 1 0 0 Date of Generation 10/08/31 Maximum Physical Record65535 File Type LO Previous File Name STSLIB.002 Comment Record FILE HEADER FILE NUMBER: 3 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 2 DEPTH INCREMENT: .5000 FILE SUMMARY VENDOR TOOL CODE START DEPTH STOP DEPTH SGRC 8259.0 10299.5 SESP 8479.0 10292.0 SEXP 8479.0 10292.0 SEDP 8479.0 10292.0 SFXE 8479.0 10292.0 SEMP 8479.0 10292.0 SROP 8528.5 10341.0 LOG HEADER DATA DATE LOGGED: 19-JUL-10 SOFTWARE SURFACE SOFTWARE VERSION: Insite DOWNHOLE SOFTWARE VERSION: 88.20 DATA TYPE (MEMORY OR REAL-TIME) : Memory TD DRILLER (FT) : 10341.0 TOP LOG INTERVAL (FT) : 8528.0 BOTTOM LOG INTERVAL (FT) : 10341.0 BIT ROTATING SPEED (RPM) : HOLE INCLINATION (DEG MINIMUM ANGLE: 32.0 MAXIMUM ANGLE: 36. 4 TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE TOOL NUMBER DGR DUAL GAMMA RAY 277300 EWR4 ELECTROMAG. RESIS. 4 121210 BOREHOLE AND CASING DATA ,.._OPEN HOLE BIT SIZE (IN) : 8.500 DRILLER'S CASING DEPTH (FT) : 8487 .0 BOREHOLE CONDITIONS MUD TYPE: Fresh Water Gel MUD DENSITY (LB/G) : 10.50 MUD VISCOSITY (S) : 49.0 MUD PH: 9.5 MUD CHLORIDES (PPM) : 1100 FLUID LOSS (C3) : 4 .3 RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT) : 1. 100 72.0 MUD AT MAX CIRCULATING TERMPERATURE: .540 155.0 MUD FILTRATE AT MT: 1.300 72.0 MUD CAKE AT MT: . 950 72.0 NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN) : TOOL STANDOFF (IN) : EWR FREQUENCY (HZ) : REMARKS: $ Data Format Specification Record Data Record Type 0 Data Specification Block Type 0 Logging Direction Down Optical log depth units Feet Data Reference Point Undefined Frame Spacing 60 . 1IN Max frames per record Undefined Absent value -999 Depth Units Datum Specification Block sub-type. . .0 Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 1 68 0 1 RPD MWD020 OHMM 4 1 68 4 2 RPM MWD020 OHMM 4 1 68 8 3 RPS MWD020 OHMM 4 1 68 12 4 RPX MWD020 OHMM 4 1 68 16 5 FET MWD020 HR 4 1 68 20 6 GR MWD020 API 4 1 68 24 7 ROP MWD020 FPH 4 1 68 28 8 First Last Name Service Unit Min Max Mean Nsam Reading Reading DEPT FT 8259 10341 9300 4165 8259 10341 RPD MWD020 OHMM 0. 66 2000 9.64511 3627 8479 10292 RPM MWD020 OHMM 0. 62 1728. 44 4 .22126 3627 8479 10292 RPS MWD020 OHMM 0. 63 1310.24 2. 95223 3627 8479 10292 RPX MWD020 OHMM 0. 62 1780.75 3.09645 3627 8479 10292 FET MWD020 HR 0.21 55.38 1.88988 3627 8479 10292 GR MWD020 API 20.29 390.24 144 . 947 4082 8259 10299.5 ROP MWD020 FPH 1.17 442.3 141. 659 3626 8528.5 10341 First Reading For Entire File 8259 Last Reading For Entire File 10341 File Trailer Service name STSLIB.003 Service Sub Level Name Version Number 1 0 0 Date of Generation 10/08/31 Maximum Physical Record65535 File Type LO Next File Name STSLIB.004 Physical EOF File Header Service name STSLIB.004 Service Sub Level Name Version Number 1 0 0 Date of Generation 10/08/31 Maximum Physical Record65535 File Type LO Previous File Name STSLIB.003 ,,. Comment Record FILE HEADER FILE NUMBER: 4 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 3 DEPTH INCREMENT: .5000 FILE SUMMARY VENDOR TOOL CODE START DEPTH STOP DEPTH CTFA 10248 . 5 10830.5 TNPS 10248 . 5 10830.5 CTNA 10248 . 5 10830.5 SBD2 10264 .5 10847.0 SNP2 10264 .5 10847.0 SCO2 10264 .5 10847 .0 SEXP 10292.5 10865.0 SEDP 10292.5 10865.0 SESP 10292.5 10865.0 SEMP 10292.5 10865.0 SFXE 10292.5 10865.0 SGRC 10300.0 10858.0 SROP 10341.5 10923.0 LOG HEADER DATA DATE LOGGED: 23-JUL-10 SOFTWARE SURFACE SOFTWARE VERSION: Insite DOWNHOLE SOFTWARE VERSION: 88.20 DATA TYPE (MEMORY OR REAL-TIME) : Memory TD DRILLER (FT) : 10923.0 TOP LOG INTERVAL (FT) : 10341.0 BOTTOM LOG INTERVAL (FT) : 10923.0 BIT ROTATING SPEED (RPM) : HOLE INCLINATION (DEG MINIMUM ANGLE: 35. 1 MAXIMUM ANGLE: 52.5 TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE TOOL NUMBER DGR DUAL GAMMA RAY 181372 CTN COMP THERMAL NEUTRON 11301941 EWR4 Electromag Resis. 4 11301872 ALD Azimuthal Litho-Dens 10508969 BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN) : 6.125 DRILLER'S CASING DEPTH (FT) : 10339.0 BOREHOLE CONDITIONS MUD TYPE: Polymer MUD DENSITY (LB/G) : 8. 65 MUD VISCOSITY (S) : 45.0 MUD PH: 9.2 MUD CHLORIDES (PPM) : 14500 FLUID LOSS (C3) : .0 RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT) : .310 77.0 MUD AT MAX CIRCULATING TERMPERATURE: .140 176.7 MUD FILTRATE AT MT: .320 77.0 MUD CAKE AT MT: .330 . 77.0 NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN) : TOOL STANDOFF (IN) : EWR FREQUENCY (HZ) : REMARKS: $ Data Format Specification Record Data Record Type 0 Data Specification Block Type 0 Logging Direction Down Optical log depth units Feet Data Reference Point Undefined Frame Spacing 60 . 1IN Max frames per record Undefined Absent value -999 Depth Units Datum Specification Block sub-type. . .0 Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 1 68 0 1 FCNT MWD030 CP30 4 1 68 4 2 NCNT MWD030 CP30 4 1 68 8 3 RHOB MWD030 G/CC 4 1 68 12 4 DRHO MWD030 G/CC 4 1 68 16 5 RPD MWD030 OHMM 4 1 68 20 6 RPM MWD030 OHMM 4 1 68 24 7 RPS MWD030 OHMM 4 1 68 28 8 RPX MWD030 OHMM 4 1 68 32 9 _ FET MWD030 HR 4 1 68 36 10 GR MWD030 API 4 1 68 40 11 PEF MWD030 B/E 4 1 68 44 12 ROP MWD030 FPH 4 1 68 48 13 NPHI MWD030 PU 4 1 68 52 14 First Last Name Service Unit Min Max Mean Nsam Reading Reading DEPT FT 10248.5 10923 10585.8 1350 10248.5 10923 FCNT MWD030 CP30 130.27 2866.75 858.328 1165 10248.5 10830.5 NCNT MWD030 CP30 14385. 6 49145.3 29007.4 1165 10248.5 10830.5 RHOB MWD030 G/CC 0.388 3. 609 2. 16307 1166 10264 .5 10847 DRHO MWD030 G/CC -3.719 0. 974 -0. 165867 1166 10264 .5 10847 RPD MWD030 OHMM 0.58 1803.7 112.085 1146 10292.5 10865 RPM MWD030 OHMM 0. 13 2000 92.7326 1146 10292.5 10865 RPS MWD030 OHMM 0.57 1250.47 42.3929 1146 10292.5 10865 RPX -MWD030 OHMM 0. 46 1401.32 32.1818 1146 10292.5 10865 FET MWD030 HR 1.24 87.12 9. 68493 1146 10292.5 10865 GR MWD030 API 17 . 69 576.79 62.789 1117 10300 10858 PEF MWD030 B/E 1.07 14.49 3.89336 1166 10264 .5 10847 ROP MWD030 FPH 1. 89 165. 68 51.551 1164 10341.5 10923 NPHI MWD030 PU 6.73 53.68 21.7878 1165 10248.5 10830.5 First Reading For Entire File 10248.5 Last Reading For Entire File 10923 File Trailer Service name STSLIB.004 Service Sub Level Name Version Number 1 0 0 Date of Generation 10/08/31 Maximum Physical Record65535 File Type LO Next File Name STSLIB.005 ,.,. Physical EOF File Header Service name STSLIB.005 Service Sub Level Name Version Number 1 0 0 Date of Generation 10/08/31 Maximum Physical Record65535 File Type LO Previous File Name STSLIB.004 Comment Record FILE HEADER FILE NUMBER: 5 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 4 DEPTH INCREMENT: .5000 FILE SUMMARY VENDOR TOOL CODE START DEPTH STOP DEPTH CTNA 10831.0 11771.5 TNPS 10831.0 11771.5 CTFA 10831.0 11771.5 SNP2 10847.5 11788.0 SCO2 10847 .5 11788.0 SBD2 10847 .5 11788.0 SGRC 10858.5 11799.5 SEMP 10865. 5 11806.5 SEDP 10865.5 11806.5 SESP 10865.5 11806.5 SEXP 10865.5 11806.5 SFXE 10865.5 11806.5 SROP 10923.5 11864 .0 $ LOG HEADER DATA DATE LOGGED: 26-JUL-10 SOFTWARE SURFACE SOFTWARE VERSION: Insite DOWNHOLE SOFTWARE VERSION: 88.20 DATA TYPE (MEMORY OR REAL-TIME) : Memory TD DRILLER (FT) : 11864 .0 TOP LOG INTERVAL (FT) : 10923.0 BOTTOM LOG INTERVAL (FT) : 11864 .0 BIT ROTATING SPEED (RPM) : HOLE INCLINATION (DEG MINIMUM ANGLE: 55.2 MAXIMUM ANGLE: 91.1 TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE TOOL NUMBER DGR DUAL GAMMA RAY 181372 CTN COMP THERMAL NEUTRON 11301941 EWR4 Electromag Resis. 4 11301872 ALD Azimuthal Litho-Dens 10508969 BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN) : 6. 125 DRILLER'S CASING DEPTH (FT) : 10339.0 BOREHOLE CONDITIONS MUD TYPE: Polymer MUD DENSITY (LB/G) : 8.80 MUD VISCOSITY (S) : 44 .0 MUD PH: 9.0 MUD CHLORIDES (PPM) : 22000 FLUID LOSS (C3) : 6.0 RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT) : .200 77.0 MUD AT MAX CIRCULATING TERMPERATURE: .090 176.7 MUD FILTRATE AT MT: .190 77.0 MUD CAKE AT MT: .210 77.0 4 NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN) : 4 TOOL STANDOFF (IN) : EWR FREQUENCY (HZ) : 4 REMARKS: $ 4 Data Format Specification Record Data Record Type 0 Data Specification Block Type 0 Logging Direction Down Optical log depth units Feet Data Reference Point Undefined Frame Spacing 60 . 1IN Max frames per record Undefined Absent value -999 _ Depth Units Datum Specification Block sub-type. . .0 Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 1 68 0 1 FCNT MWD040 CP30 4 1 68 4 2 NCNT MWD040 CP30 4 1 68 8 3 RHOB MWD040 G/CC 4 1 68 12 4 ' DRHO MWD040 G/CC 4 1 68 16 5 RPD MWD040 OHMM 4 1 68 20 6 RPM MWD040 OHMM 4 1 68 24 7 RPS MWD040 OHMM 4 1 68 28 8 RPX MWD040 OHMM 4 1 68 32 9 FET MWD040 HR 4 1 68 36 10 GR MWD040 API 4 1 68 40 11 PEF MWD040 B/E 4 1 68 44 12 ROP MWD040 FPH 4 1 68 48 13 NPHI MWD040 PU 4 1 68 52 14 First Last Name Service Unit Min Max Mean Nsam Reading Reading DEPT FT 10831 11864 11347.5 2067 10831 11864 FCNT MWD040 CP30 426.33 1012.7 598.575 1882 10831 11771.5 NCNT MWD040 CP30 24412. 4 34822 27614 .4 1882 10831 11771. 5 RHOB MWD040 G/CC 2.095 2. 697 2.25068 1882 10847.5 11788 DRHO MWD040 G/CC -0.099 0.283 0.0524261 1882 10847.5 11788 RPD MWD040 OHMM 4.87 45.16 13.9833 1883 10865.5 11806.5 RPM MWD040 OHMM 4. 12 37.74 13.044 1883 10865.5 11806.5 RPS MWD040 OHMM 3.81 34 .34 11.1337 1883 10865.5 11806.5 RPX MWD040 OHMM 3.51 29. 95 9. 12131 1883 10865.5 11806.5 FET MWD040 HR 0.53 28 3. 19796 1883 10865.5 11806.5 GR MWD040 API 15.54 57.22 26.4083 1883 10858.5 11799.5 PEF MWD040 B/E 0. 95 4.14 1.8514 1882 10847.5 11788 ROP MWD040 FPH 1.01 229.78 79.1486 1882 10923.5 11864 NPHI MWD040 PU 16. 19 28.82 23. 6522 1882 10831 11771.5 .r First Reading For Entire File 10831 Last Reading For Entire File 11864 • File Trailer Service name STSLIB.005 Service Sub Level Name Version Number 1 0 0 Date of Generation 10/08/31 Maximum Physical Record65535 File Type LO Next File Name STSLIB.006 Physical EOF File Header Service name STSLIB.006 Service Sub Level Name Version Number 1 0 0 Date of Generation 10/08/31 Maximum Physical Record65535 File Type LO Previous File Name STSLIB.005 Comment Record FILE HEADER FILE NUMBER: 6 RAW MAD Curves and log header data for each pass of each run in separate files. DEPTH INCREMENT: .5000 MAD RUN NUMBER: 4 MAD PASS NUMBER: 1 FILE SUMMARY VENDOR TOOL CODE START DEPTH STOP DEPTH TNPS 10263.0 11770.0 CTFA 10263.0 11770.0 CTNA 10263.0 11770.0 SNP2 10277.0 11786.5 SBD2 10277.0 11786.5 SCO2 10277 .0 11786.5 SGRC 10288.5 11798.0 SEDP 10295.5 11805.0 SEXP 10295.5 11805.0 SESP 10295.5 11805.0 SEMP 10295.5 11805.0 SFXE 10295.5 11805.0 SRAT 10354.0 11864 .0 LOG HEADER DATA DATE LOGGED: 26-JUL-10 SOFTWARE SURFACE SOFTWARE VERSION: Insite DOWNHOLE SOFTWARE VERSION: 88.20 DATA TYPE (MEMORY OR REAL-TIME) : Memory TD DRILLER (FT) : 11864 .0 TOP LOG INTERVAL (FT) : 10263.0 BOTTOM LOG INTERVAL (FT) : 11864 .0 BIT ROTATING SPEED (RPM) : HOLE INCLINATION (DEG MINIMUM ANGLE: 55.2 MAXIMUM ANGLE: 91. 1 TOOL STRING (TOP TO BOTTOM) ,. VENDOR TOOL CODE TOOL TYPE TOOL NUMBER DGR DUAL GAMMA RAY 181372 CTN COMP THERMAL NEUTRON 11301941 EWR4 Electromag Resis. 4 11301872 ALD Azimuthal Litho-Dens 10508969 $ BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN) : 6. 125 DRILLER'S CASING DEPTH (FT) : 10339.0 BOREHOLE CONDITIONS MUD TYPE: Polymer MUD DENSITY (LB/G) : 8.80 MUD VISCOSITY (S) : 44.0 MUD PH: 9.0 MUD CHLORIDES (PPM) : 22000 FLUID LOSS (C3) : 6.0 RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT) : .200 77.0 MUD AT MAX CIRCULATING TERMPERATURE: .090 176.7 MUD FILTRATE AT MT: . 190 77.0 MUD CAKE AT MT: .210 77.0 NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN) : TOOL STANDOFF (IN) : EWR FREQUENCY (HZ) : REMARKS: Data Format Specification Record Data Record Type 0 Data Specification Block Type 0 Logging Direction Down Optical log depth units Feet Data Reference Point Undefined Frame Spacing 60 . 1IN Max frames per record Undefined Absent value -999 Depth Units Datum Specification Block sub-type. . .0 Name Service Order Units Size Nsam Rep Code Offset Channel DEPT._ FT 4 1 68 0 1 FCNT MAD041 CP30 4 1 68 4 2 NCNT MAD041 CP30 4 1 68 8 3 RHOB MAD041 G/CC 4 1 68 12 4 DRHO MAD041 G/CC 4 1 68 16 5 RPD MAD041 OHMM 4 1 68 20 6 RPM MAD041 OHMM 4 1 68 24 7 RPS MAD041 OHMM 4 1 68 28 8 RPX MAD041 OHMM 4 1 68 32 9 FET MAD041 HR 4 1 68 36 10 GR MAD041 API 4 1 68 40 11 PEF MAD041 B/E 4 1 68 44 12 RAT MAD041 FPH 4 1 68 48 13 NPHI MAD041 PU 4 1 68 52 14 First Last Name Service Unit Min Max Mean Nsam Reading Reading DEPT FT 10263 11864 11063.5 3203 10263 11864 FCNT MAD041 CP30 119.04 3058 .34 695.527 3015 10263 11770 NCNT MAD041 CP30 15409. 6 49848.4 28803 3015 10263 11770 RHOB MAD041 G/CC 0.003 3.002 2.2133 3020 10277 11786.5 DRHO MAD041 G/CC -3.522 0.305 -0.0837954 3020 10277 11786.5 RPD MAD041 OHMM 0.76 2000 57.4356 3020 10295.5 11805 RPM MAD041 OHMM 0.2 435.05 22.2017 3020 10295.5 11805 RPS MAD041 OHMM 0.35 153. 69 15.3617 3020 10295.5 11805 RPX MAD041 OHMM 0.29 261. 95 11.6521 3020 10295.5 11805 FET MAD041 HR 3. 91 168.37 42.6785 3020 10295.5 11805 GR MAD041 API 12.48 561.03 45.7549 3020 10288.5 11798 PEF MAD041 B/E 0. 9 15. 92 2.56559 3020 10277 11786.5 RAT MAD041 FPH 0.23 1564 .04 261.024 3021 10354 11864 NPHI MAD041 PU 6.14 55. 16 23.2364 3015 10263 11770 First Reading For Entire File 10263 Last Reading For Entire File 11864 File Trailer Service name STSLIB.006 Service Sub Level Name Version Number 1 0 0 Date of Generation 10/08/31 Maximum Physical Record65535 File Type LO Next File Name STSLIB.007 Physical EOF Tape Trailer Service name LISTPE Date 10/08/31 Origin STS Tape Name UNKNOWN Continuation Number 01 Next Tape Name UNKNOWN Comments STS LIS Writing Library. Scientific Technical Services Reel Trailer Service name LISTPE Date 10/08/31 Origin STS Reel Name UNKNOWN Continuation Number 01 Next Reel Name UNKNOWN Comments STS LIS Writing Library. Scientific Technical Services Physical EOF Physical EOF End Of LIS File
