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Home My WebLink About210-085Nolan Vlahovich Hilcorp Alaska, LLC Geotech 3800 Centerpoint Drive, Suite 1400 Anchorage, AK 99503 Tele: (907) 564-4558 E-mail: nolan.vlahovich@hilcorp.com Please acknowledge receipt by signing and returning one copy of this transmittal. Received By: Date: Date: 11/07/2025 To: Alaska Oil & Gas Conservation Commission Natural Resource Technician 333 W 7th Ave Suite 100 Anchorage, AK 99501 SFTP DATA TRANSMITTAL T#20251107 Well API #PTD #Log Date Log Company Log Type AOGCC E-Set# BRU 212-26 50283201820000 220058 9/20/2025 AK E-LINE Perf BRU 212-35 50283100270000 162018 10/12/2025 AK E-LINE TubingPuncher BRU 234-27 50283202070000 225065 7/17/1905 AK E-LINE CBL-02-October BRU 234-27 50283202070000 225065 10/6/2025 AK E-LINE CIBP/Perf GP 42-23RD 50733201140100 195145 10/26/2025 AK E-LINE TubingPunch GP ST 42-23RD 50733201140100 195145 10/9/2025 AK E-LINE JetCut MPL-54 50029236070000 218066 10/16/2025 READ CaliperSurvey MPL-57 50029236090000 218072 10/27/2025 READ CaliperSurvey MPU B-21 50029215350000 186023 10/25/2025 AK E-LINE RBP NCIU A-07 50883200270000 169058 10/10/2025 AK E-LINE JetCut NCIU A-17A 50883201880100 225089 10/10/2025 AK E-LINE Perf NCIU A-17A 50883201880100 225089 10/14/2025 AK E-LINE Perf PBU 01-10A 50029201690200 225055 8/29/2025 HALLIBURTON RBT PBU 05-11A 50029202520100 196097 10/11/2025 BAKER RPM PBU 05-31B 50029221590200 210085 10/14/2025 BAKER SPN PBU F-06B 50029200970200 225054 9/27/2025 BAKER MRPM PBU F-42A 50029221080100 207093 10/27/2025 BAKER RPM PBU H-07B 50029202420200 225064 9/29/2025 BAKER MRPM PBU L5-27 50029236270000 219046 10/7/2025 BAKER SPN PBU Q-06A 50029203460100 198090 8/22/2025 YELLOWJACKET SCBL SD-06 50133205820000 208160 7/23/2025 YELLOWJACKET GPT-PERF SRU 222-33 50133207150000 223100 7/15/2025 YELLOWJACKET PERF Please include current contact information if different from above. T41066 T41067 T41068 T41068 T41069 T41069 T41070 T41071 T41072 T41073 T41074 T41074 T41075 T41076 T41077 T41078 T41079 T41080 T41081 T41082 T41083 T41084 PBU 05-31B 50029221590200 210085 10/14/2025 BAKER SPN Gavin Gluyas Digitally signed by Gavin Gluyas Date: 2025.11.07 15:03:51 -09'00' 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 05-31B Extended Perforating Hilcorp North Slope, LLC 3800 Centerpoint Dr, Suite 1400, Anchorage, AK 99503 210-085 50-029-22159-02-00 11015 Conductor Surface Intermediate Production Liner 8927 86 3305 8478 2657 10924 20" 9-5/8" 7" 4-1/2" 8935 29 - 115 29 - 3334 27 - 8505 8356 - 11013 29 - 115 29 - 3334 27 - 8326 8182 - 8927 none 470 2020 5410 7500 none 1490 3520 7240 8430 9302 - 10920 4-1/2" 12.6# 13Cr85 26 - 8362 8892 - 8935 Structural 4-1/2" HES TNT , 8243 , 8074 8243 8074 Bo York Operations Manager Dave Bjork David.Bjork@hilcorp.com (907) 564-4672 PRUDHOE BAY / PRUDHOE OIL Total Depth Effective Depth measured true vertical feet feet feet feet measured true vertical measured measured feet feet feet feet measured true vertical Plugs Junk Packer Measured depth True Vertical depth feet feet Perforation depth Tubing (size, grade, measured and true vertical depth) Packers and SSSV (type, measured and true vertical depth) 12. Stimulation or cement squeeze summary: Intervals treated (measured): Treatment descriptions including volumes used and final pressure: 13a.Representative Daily Average Production or Injection Data Oil -Bbl Gas-Mcf Water -Bbl Casing Pressure Tubing Pressure Prior to well operation: Subsequent to operation: 15. Well Class after work: Exploratory Development Service StratigraphicDaily Report of Well Operations Copies of Logs and Surveys Run Electronic Fracture Stimulation Data Sundry Number or N/A if C.O. Exempt: ADL 0028326 26 - 8188 230 557 22295 12886 12 67 0 0 718 839 324-263 13b. Pools active after work:PRUDHOE OIL No SSSV 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 Digitally signed by Bo York (1248) DN: cn=Bo York (1248) Date: 2024.07.31 13:19:22 - 08'00' Bo York (1248) By Grace Christianson at 3:27 pm, Jul 31, 2024 WCB 11-7-2024 RBDMS JSB 080624 DSR-8/2/24 ACTIVITYDATE SUMMARY 7/6/2024 LRS CTU #1 1.75" CT. Job Scope: Extended Perforate MIRU and perform weekly BOP test. NU BOPs. Cut 30' CT. MU NS ctc/MHA. MU HES Logging Tools (GR/CCL) 2.2" Carrier w/ 3.25" JSN. Load and Kill w/ slick 1% kcl w/ SL. RIH. ***Continue on WSR 7/7/24*** 7/7/2024 LRS CTU #1 1.75" CT. Job Scope: Extended Perforate RIH w/ HES GR/CCL logging toolstring in 2.20" carrier w/ 3.25" JSN. Log from 9650' to 8200' at 50 FPM. Paint a yellow flag at 9250.25' E / 9256' M / 9250.27' HES. POOH and confirm good data (-5' correction). Open hole deploy 218' of 2-7/8" Maxforce, 6 SPF, 60 degree phase guns. RIH and perforate 9302' - 9520'. Good indication of shot. POOH and lay down guns (all shots fired in scallop, 5/8" ball recovered). Cap the well with 5 BBL's of 50/50 and RDMO. ***Job Complete*** Daily Report of Well Operations PBU 05-31B Open hole deploy 218' of 2-7/8" Maxforce, 6 SPF, 60 g( ) y degree phase guns. RIH and perforate 9302' - 9520'. Good indication ofg shot. POOH 7. If perforating: 1. Type of Request: 2. Operator Name: 3. Address: 4. Current Well Class:5. Permit to Drill Number: 6. API Number: 8. Well Name and Number: 9. Property Designation (Lease Number):10. Field: Abandon Suspend Plug for Redrill Perforate New Pool Perforate Plug Perforations Re-enter Susp Well Other Stimulate Fracture Stimulate Alter Casing Pull Tubing Repair Well Other: Change Approved Program Operations shutdown What Regulation or Conservation Order governs well spacing in this pool? Will perfs require a spacing exception due to property boundaries?Yes No 11. Total Depth MD (ft): Total Depth TVD (ft): Effective Depth MD: Effective Depth TVD: MPSP (psi): Plugs (MD): Junk (MD): PRESENT WELL CONDITION SUMMARY Perforation Depth MD (ft): Perforation Depth TVD (ft):Tubing Size: Tubing Grade: Tubing MD (ft): Packers and SSSV Type:Packers and SSSV MD (ft) and TVD (ft): Casing Length Size MD TVD Burst Collapse Exploratory Stratigraphic Development Service 12. Attachments: 14. Estimated Date for Commencing Operations: 13. Well Class after proposed work: 15. Well Status after proposed work: 16. Verbal Approval: 17. I hereby certify that the foregoing is true and the procedure approved herein will not be deviated from without prior written approcal. Proposal Summary Wellbore schematic BOP SketchDetailed Operations Program OIL GAS WINJ WAG GINJ WDSPL GSTOR Op Shutdown Suspended SPLUG Abandoned ServiceDevelopmentStratigraphicExploratory Authorized Name and Digital Signature with Date: Authorized Title: Contact Name: Contact Email: Contact Phone: AOGCC USE ONLY Commission Representative: Conditions of approval: Notify AOGCC so that a representative may witness Sundry Number: Location ClearanceMechanical Integrity TestBOP TestPlug Integrity Other Conditions of Approval: Post Initial Injection MIT Req'd?Yes No Subsequent Form Required: Approved By:Date: APPROVED BY THE AOGCCCOMMISSIONER PBU 05-31B Extended Perforating Hilcorp North Slope, LLC 3800 Centerpoint Dr, Suite 1400, Anchorage, AK 99503 210-085 50-029-22159-02-00 ADL 0028326 11015 Conductor Surface Intermediate Production Liner 8927 86 3305 8478 2657 10924 20" 9-5/8" 7" 4-1/2" 8935 29 - 115 29 - 3334 27 - 8505 8356 - 11013 2420 29 - 115 29 - 3334 27 - 8326 8182 - 8927 none 470 2020 5410 7500 none 1490 3520 7240 8430 9710 - 10920 4-1/2" 12.6# 13Cr85 26 - 83628917 - 8935 Structural 4-1/2" HES TNT No SSSV 8243 8074 Date: Bo York Operations Manager Dave Bjork David.Bjork@hilcorp.com (907) 564-4672 PRUDHOE BAY 5/15/2024 Current Pools: PRUDHOE OIL Proposed Pools: PRUDHOE OIL Suspension Expiration Date: STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION APPLICATION FOR SUNDRY APPROVALS 20 AAC 25.280 Comm. Comm.Sr Pet Eng Sr Pet Geo Sr Res Eng Form 10-403 Revised 06/2023 Approved application is valid for 12 months from the date of approval.Submit PDF to aogcc.permitting@alaska.gov By Grace Christianson at 3:15 pm, May 01, 2024 Digitally signed by Eric Dickerman (4002) DN: cn=Eric Dickerman (4002) Date: 2024.05.01 13:17:54 - 08'00' Eric Dickerman (4002) MGR07JUN24 DSR-5/2/24 10-404 Perforate SFD 5/3/2024*&:JLC 6/24/2024 Brett W. Huber, Sr. Digitally signed by Brett W. 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ĐŽŶƚƌŽůƐƚĞƉƐǁŝƚŚĐƌĞǁƉƌŝŽƌƚŽďƌĞĂŬŝŶŐůƵďƌŝĐĂƚŽƌĐŽŶŶĞĐƚŝŽŶĂŶĚĐŽŵŵĞŶĐŝŶŐŵĂŬĞƵƉŽĨdWŐƵŶ ƐƚƌŝŶŐ͘KŶĐĞƚŚĞƐĂĨĞƚǇũŽŝŶƚĂŶĚd/tǀĂůǀĞŚĂǀĞďĞĞŶƐƉĂĐĞĚ ŽƵƚ͕ŬĞĞƉƚŚĞƐĂĨĞƚǇũŽŝŶƚͬd/tǀĂůǀĞ ƌĞĂĚŝůǇĂĐĐĞƐƐŝďůĞŶĞĂƌƚŚĞǁŽƌŬŝŶŐƉůĂƚĨŽƌŵĨŽƌƋƵŝĐŬĚĞƉůŽǇŵĞŶƚŝĨŶĞĐĞƐƐĂƌǇ͘ Ă͘ ƚƚŚĞďĞŐŝŶŶŝŶŐŽĨĞĂĐŚũŽď͕ƚŚĞĐƌŽƐƐŽǀĞƌͬƐĂĨĞƚǇũŽŝŶƚŵƵƐƚďĞƉŚǇƐŝĐĂůůǇDhƚŽƚŚĞƉĞƌĨŐƵŶƐ ŽŶĞƚŝŵĞƚŽĐŽŶĨŝƌŵƚŚĞƚŚƌĞĂĚƐĂƌĞĐŽŵƉĂƚŝďůĞ͘ ϵ͘ƌĞĂŬůƵďƌŝĐĂƚŽƌĐŽŶŶĞĐƚŝŽŶĂƚYd^ĂŶĚďĞŐŝŶŵĂŬĞƵƉŽĨdWŐƵŶƐƉĞƌƐĐŚĞĚƵůĞďĞůŽǁ͘ŽŶƐƚĂŶƚůǇ ŵŽŶŝƚŽƌĨůƵŝĚƌĂƚĞƐƉƵŵƉĞĚŝŶĂŶĚĨůƵŝĚƌĞƚƵƌŶƐŽƵƚŽĨƚŚĞǁĞůů͘&ůƵŝĚƐŵĂŶͲǁĂƚĐŚŵƵƐƚďĞƉĞƌĨŽƌŵĞĚ ǁŚŝůĞĚĞƉůŽǇŝŶŐƉĞƌĨŐƵŶƐƚŽĞŶƐƵƌĞƚŚĞǁĞůůƌĞŵĂŝŶƐŬŝůůĞĚĂŶĚƚŚĞƌĞŝƐŶŽĞǆĐĞƐƐĨůŽǁ͘ WĞƌĨ^ĐŚĞĚƵůĞ hƐĞϮͲϳͬϴ͟DĂǆĨŽƌĐĞŐƵŶƐŽƌ ƐŝŵŝůĂƌ͘ WĞƌĨ/ŶƚĞƌǀĂů WĞƌĨ>ĞŶŐƚŚ 'ƵŶ>ĞŶŐƚŚ tĞŝŐŚƚŽĨ'ƵŶ;ůďƐͿ ZƵŶηϭ ϵ͕ϯϬϮ͛ ʹ ϵ͕ϱϮϬ͛ Ϯϭϴ͛ Ϯϭϴ͛ Ϯ͕ϳϬϱ ůďƐ;ϭϮ͘ϰϭƉƉĨͿ ϭϬ͘ DĂŬĞƵƉYd^ĂŶĚWdƐĂŵĞ͘ ϭϭ͘ Z/,ǁŝƚŚƉĞƌĨŐƵŶĂŶĚƚŝĞͲŝŶƚŽĐŽŝůĨůĂŐĐŽƌƌĞůĂƚŝŽŶ͘WŝĐŬ ƵƉĂŶĚƉĞƌĨŽƌĂƚĞŝŶƚĞƌǀĂůƉĞƌWĞƌĨ^ĐŚĞĚƵůĞ ĂďŽǀĞ͘ Ă͘ EŽƚĞĂŶǇƚƵďŝŶŐƉƌĞƐƐƵƌĞĐŚĂŶŐĞŝŶt^Z͘ ϭϮ͘ ĨƚĞƌƉĞƌĨŽƌĂƚŝŶŐ͕Wh,ƚŽƚŽƉŽĨůŝŶĞƌŽƌŝŶƚŽƚƵďŝŶŐƚĂŝůƚŽĞŶƐƵƌĞĚĞďƌŝƐĚŽĞƐŶ͛ƚĨĂůůŝŶŽŶƚŚĞŐƵŶƐĂŶĚ ƐƚŝĐŬƚŚĞ,͘ŽŶĨŝƌŵǁĞůůŝƐĚĞĂĚĂŶĚƌĞͲŬŝůůŝĨ ŶĞĐĞƐƐĂƌǇ ďĞĨŽƌĞƉƵůůŝŶŐƚŽƐƵƌĨĂĐĞ͘ ϭϯ͘ WƵŵƉƉŝƉĞĚŝƐƉůĂĐĞŵĞŶƚǁŚŝůĞWKK,͘^ƚŽƉĂƚƐƵƌĨĂĐĞƚŽƌĞĐŽŶĨŝƌŵǁĞůůŝƐĚĞĂĚ͘<ŝůůǁĞůůŝĨŶĞĐĞƐƐĂƌǇ͘ ϭϰ͘ ZĞǀŝĞǁǁĞůůĐŽŶƚƌŽůƐƚĞƉƐĂŶĚ^ƚĂŶĚŝŶŐKƌĚĞƌƐǁŝƚŚĐƌĞǁƉƌŝŽƌƚŽďƌĞĂŬŝŶŐůƵďƌŝĐĂƚŽƌĐŽŶŶĞĐƚŝŽŶĂŶĚ ĐŽŵŵĞŶĐŝŶŐďƌĞĂŬĚŽǁŶŽĨdWŐƵŶƐƚƌŝŶŐ͘ ϭϱ͘ ŶƐƵƌĞƐĂĨĞƚǇũŽŝŶƚĂŶĚd/tǀĂůǀĞĂƐƐĞŵďůǇĂƌĞŽŶͲŚĂŶĚďĞĨŽƌĞďƌĞĂŬŝŶŐŽĨĨůƵďƌŝĐĂƚŽƌƚŽ>ŐƵŶ,͘ ϭϲ͘ ZDKdh͘ ϭϳ͘ dƵƌŶǁĞůůŽǀĞƌƚŽKƉĞƌĂƚŝŽŶƐWKW͘ ǆƚĞŶĚĞĚĚĚ WĞƌĨ ϬϱͲϯϭ Wd͗ϮϭϬͲϬϴϱ ƚƚĂĐŚŵĞŶƚƐ͗ tĞůůďŽƌĞ^ĐŚĞŵĂƚŝĐ WƌŽƉŽƐĞĚ^ĐŚĞŵĂƚŝĐ dŝĞͲ/Ŷ>ŽŐ DŝŶŝͲ>ŽŐ KWĂŶĚƌŝŐͲƵƉĚŝĂŐƌĂŵ ^ƵŶĚƌǇŚĂŶŐĞ&Žƌŵ ǆƚĞŶĚĞĚĚĚ WĞƌĨ ϬϱͲϯϭ Wd͗ϮϭϬͲϬϴϱ ƵƌƌĞŶƚ tĞůůďŽƌĞ^ĐŚĞŵĂƚŝĐ ǆƚĞŶĚĞĚĚĚ WĞƌĨ ϬϱͲϯϭ Wd͗ϮϭϬͲϬϴϱ WƌŽƉŽƐĞĚ tĞůůďŽƌĞ ^ĐŚĞŵĂƚŝĐ ǆƚĞŶĚĞĚĚĚ WĞƌĨ ϬϱͲϯϭ Wd͗ϮϭϬͲϬϴϱ dŝĞͲ/Ŷ>ŽŐ ǆƚĞŶĚĞĚĚĚ WĞƌĨ ϬϱͲϯϭ Wd͗ϮϭϬͲϬϴϱ ǆƚĞŶĚĞĚĚĚ WĞƌĨ ϬϱͲϯϭ Wd͗ϮϭϬͲϬϴϱ DŝŶŝ>ŽŐ ǆƚĞŶĚĞĚĚĚ WĞƌĨ ϬϱͲϯϭ Wd͗ϮϭϬͲϬϴϱ KW^ĐŚĞŵĂƚŝĐ ǆƚĞŶĚĞĚĚĚ WĞƌĨ ϬϱͲϯϭ Wd͗ϮϭϬͲϬϴϱ ǆƚĞŶĚĞĚĚĚ WĞƌĨ ϬϱͲϯϭ Wd͗ϮϭϬͲϬϴϱ ǆƚĞŶĚĞĚĚĚ WĞƌĨ ϬϱͲϯϭ Wd͗ϮϭϬͲϬϴϱ &KDQJHVWR$SSURYHG6XQGU\3URFHGXUH 'DWH 6XEMHFW 6XQGU\ 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They are available in the original file, may be scanned during a special rescan activity or are viewable by direct inspection of the file. c:I Q - 0E5 Well History File Identifier Organizing(done) Two-sided II ill I III I III ❑ Rescan Needed 1111111 IUIII RE AN DIGITAL DATA OVERSIZED (Scannable) /GreYscale Col Items:or Items: ❑ Dis ettes, No. ❑ Maps: Other, No/Type:ap NO. 1 ❑ Other Items Scannable by a Large Scanner ❑ Poor Quality Originals: OVERSIZED (Non-Scannable) ❑ Other: ❑ Logs of various kinds: NOTES: ❑ Other:: BY: Date: 1/3 i I /s! Project Proofing 1 1 IIIII BY: Date: I 31 I /s! MP Scanning Preparation a.., x 30 = 014 + a = TOTAL PAGES 6 9- (Count does not include cover sheet) rvi BY: ��- Date: 3/ 1 /s/ Production Scanning I 1 Stage 1 Page Count from Scanned File: ig 3 (Count does include cov sheet) Page Count Matches Number in Scanning Preparation: YES NO BY: 11100 Date: 1 i 31 1 14 /si Min Stage 1 If NO in stage 1, page(s) discrepancies were found: YES NO BY: Maria Date: /s! 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Attn:Well Integrity Coordinator, PRB-20 Post Office Box 196612 Anchorage,Alaska 99519-6612 May 11, 2012 WOW PAUG 2 1 2012 Mr. Jim Regg ©43 Alaska Oil and Gas Conservation Commission 333 West 7th Avenue O Anchorage, Alaska 99501 Subject: Corrosion Inhibitor Treatments of GPB DS-05 Dear Mr. Regg, Enclosed please find multiple copies of a spreadsheet with a list of wells from GPB DS- 05 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, off. Mehreen Vazir BPXA, Well Integrity Coordinator BP Exploration (Alaska ) Inc. Surface Casing by Conductor Annulus Cement,Corrosion inhibitor,Sealant Top-off Report of Sundry Operations(10-404) DS-05 Date:01/10/2012 Corrosion Initial top of Vol.of cement Final top of Cement top off Corrosion inhibitor/ Well Name PTO# API# cement pumped cement date inhibitor sealant date ft bbls ft gal 05-01C 1990280 50029201360000 Sealed conductor NA NA N/A N/A NA 05-02A 2012410 50029201440100 Sealed conductor NA NA N/A N/A NA 05-03C 2000940 50029201470300 Sealed conductor NA NA N/A N/A NA 05-04A 1960890 50029201520100 Sealed conductor NA NA N/A N/A NA 05-05B 1961800 50029201700200 Sealed conductor NA NA N/A N/A NA 05-06A 1950840 50029201730100 0 NA 0 N/A N/A NA 05-07 1770130 50029202430000 Sealed conductor NA NA N/A N/A NA 05-08A 2100550 50029202480100 Sealed conductor NA NA N/A N/A NA 05-09A 1990140 50029202540100 Sealed conductor NA NA N/A N/A NA 05-10C 2070980 50029202630300 Sealed conductor NA NA N/A N/A NA 05-11A 1960970 50029202520100 Sealed conductor NA NA N/A N/A NA 05-12B 2011800 50029202440200 Sealed conductor NA_ NA N/A N/A NA 05-13B 2071460 50029202500200 Sealed conductor NA NA N/A N/A NA 05-14A 1930820 50029202530100 Sealed conductor NA_ NA N/A N/A NA 05-158 1960230 50029202550200 Sealed conductor NA NA N/A N/A NA 05-16B 1991000 50029202620200 Sealed conductor NA NA N/A N/A NA 05-17B 1981040 50029202710200 Sealed conductor NA NA N/A N/A NA 05-18A 1981740 50029219600100 Split conductor NA NA N/A N/A N/A 05-19 1890780 50029219620000 1.4 NA 1.4 N/A 8.5 4/11/2011 05-20B 2042340 50029221370200 1.2 NA 1.2 N/A 5.1 4/18/2011 05-21A 1981180 50029219690100 Dust Cover NA NA N/A N/A N/A 05-22B 2071260 50029219760200 3.1 NA 3.1 N/A 18.7 4/17/2011 _05-23B _ 2080610 50029219630200 1.2 NA 1.2 N/A 5.1 4/11/2011 05-24A 2042180 50029222040100 1.5 NA 1.5 N/A 10.2 4/11/2011 05-25C 2091240 50029219880300 6.0 NA 6.0 N/A 44.2 4/18/2011 05-26A 2012210 50029219840100 0.5 NA 0.5 N/A 3.4 4/12/2011 05-27B 2081910 50029219790200 Sealed conductor NA NA N/A N/A N/A 05-28B 2060890 50029222080200 0.6 NA 0.6 N/A 1.7 4/10/2011 05-30 1911150 50029222130000 1.2 NA 1.2 N/A 10.2 4/11/2011 ---9 05-31B 2100850 50029221590200 1.3 NA 1.3 N/A 6.8 4/12/2011 05-32A 2020010 50029221900100 20.0 6.0 0.5 7/13/2011 3.4 7/23/2011 05-33B 2100810 50029221680200 4.8 NA 4.8 N/A 37.4 4/27/2011 05-34A 2080370 50029222170100 3.9 NA 3.9 N/A 18.7 1/4/2012 05-35A 2081340 50029221720100 2.7 NA 2.7 N/A 18.7 4/18/2011 05-36A 2050700 50029221820100 2.3 NA 2.3 N/A 13.6 4/12/2011 05-38 1961850 50029227220000 1.8 NA 1.8 N/A 15.3 4/10/2011 05-39 1961730 50029227150000 1.3 NA 1.3 N/A 10.2 4/10/2011 05-40 1961590 50029227070000 1.6 N/A 1.6 N/A 16.2 1/10/2012 05-41A 2031700 50029226960100 5.0 NA 5.0 N/A 58.7 1/8/2012 <oama - - - - - >SND m a m a w m.. con mm m g o m m q 3 0 01`;' -.�ZN;Nrn Nx 5 D g 0 x,.., IF Rill iaw wOO T C.) m N m O N y w Sm n fax EN N 7 LI c m 2 CfnOwnf�O m m OD -.4 D C U A N N M A D w M D OO-a OG Q O O o° °O OO° s p.p 5 j A A N .-N Z Z O3z ACNCZC G) ZONNNnNLN 3111;_ i Z i O 0 T C O �1 2 1 O � 01 P'ay r Z ,Ay , o o C� ''3 � �p S o<_ 4 o D. ;..I 0,3s-,-...0-.0 o 0+O o O w N N N W N 12. q 0000007;88 N++ + m D N N D p p N -,-. - O a m m O c N m 0 Sao •c m Fa i m n n J*� x o ---- a O a n y :. Qmom °N k� lk x�3y x n3_ D (04A 05. 0" m �!`tOV�S.I ll�C1�_(l�lf�"j''`� tai.N o �P'� �1 � OC 7 --olio C, 4,P +7."O l r' M � N ■ O O STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION WELL COMPLETION OR RECOMPLETION REPORT AND LOG 1a. 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. 09/02/2010 210-085 3. Address: 6.Date Spudded: 13. API Number: P.O. Box 196612,Anchorage,Alaska 99519-6612 8/18/2010 50-029-22159-02-00 4a. Location of Well(Governmental Section): 7.Date T.D.Reached: 14. Well Name and Number: Surface: 8/29/2010 PBU 05-31B 1737'FNL, 5279'FEL, SEC. 32,T11 N, R15E, UM 8. KB(ft above MSL): 63.07' 15.Field/Pool(s): Top of Productive Horizon: 959'FNL, 1615'FEL, SEC.31,T11 N, R15E, UM GL(ft above MSL): 35' Prudhoe Bay Field/Prudhoe Bay Total Depth: 9.Plug Back Depth(MD+TVD): Oil Pool 763'FNL, 3087'FEL,SEC.31,T11N, R15E, UM 10924' 8935' 4b. Location of Well(State Base Plane Coordinates,NAD 27): 10.Total Depth(MD+TVD): 16. Property Designation: Surface: x- 697050 y- 5949705 Zone- ASP4 11015' 8927' ADL 028326 TPI: x- 695411 y- 5950441 Zone- ASP4 11.SSSV Depth(MD+TVD): 17. Land Use Permit: Total Depth:x- 693934 y- 5950599 Zone- ASP4 N/A 18.Directional Survey: ®Yes ❑No 19.Water depth,if offshore: 20. Thickness of Permafrost(TVD): (Submit electronic and printed information per 20 MC 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, DIR/GR/RES/NEU/DEN 3334' 3334' 23. CASING,LINER AND CEMENTING RECORD SETTING DEPTH MD SETTING DEPTH TVD HOLE AMOUNT CASING WT.PER FT. GRADE TOP I BOTTOM ToP BOTTOM SIZE CEMENTING RECORD PULLED 20" 91.5# H-40 Surface 115' Surface 115' 30" 11 cu vds Arcticset I 9-5/8" 36# J-55 Surface 3334' Surface 3334' 12-1/4" 75 sx Coldset II. 300 sx Class'G' 7" 26# L-80 27' 8505' , 27' 8326' 8-3/4" 203 sx Class'G' 4-1/2" 12.6# L-80 8356' 11013', 8182' , 8927' 6-1/8" 326 sx 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#, 13Cr-85 8362' 8243'/8074' ■ MD ND MD ND 9710'-9770' 8917'-8916' 26. ACID,FRACTURE,CEMENT SQUEEZE,ETC. 9910'-10300' 8911'-8912' 10500'-10920' 8917'-8935' ,COMPS_i1(1 DEPTH INTERVAL(MD), AMOUNT AND KIND OF MATERIAL USED 1 '1 %�, b Freeze Protected with 75 Bbls Diesel •27. PRODUCTION TEST Date First Production: Method of Operation(Flowing,Gas Lift,etc.): September 12,2010 Flowing Date of Test: Hours Tested: Production For OIL-BBL: GAS-MCF: WATER-BBL: CHOKE SIZE: GAS-OIL RATIO: 9/14/2010 12 Test Period ♦ 627 852 0 128 1358 Flow Tubing Casing Press: Calculated OIL-BBL: GAS-MCF: WATER-BBL: OIL GRAVITY-API(CORR): Press. 0 550 24-Hour Rate-► 1255 1704 0 28. CORE DATA Conventional Core(s)Acquired? ❑ Yes ®No Sidewall ®No If Yes to either question,list formations and intervals cored(MD+TVD of top and bottom of each),and summarize lithology and presence of oil ms or water (submit separate sheets with this form,if needed). Submit detailed descriptions,core chips,photographs and laboratory analrfairrel Jlt'p d ,AC 250.071. None , 00&013 RBDMS OCT 48x1010°3 Form 10-407 Revised 12/2009 CONTINUED ON REVERSE Submit Original Only ige_.--1 //2 '/O Aso (i4, X29. GEOLOGIC MARKERS(List all formations and m .s encountered): 30. JRMATION TESTS NAME MD TVD Well Tested? ❑Yes 0 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. Top HRZ 8247' 8078' Base HRZ 8389' 8214' None Top Sag River 8504' 8325' Top Shublik Zone A 8545' 8365' Top Shublik Zone B 8566' 8385' Top Shublik Zone C 8576' 8395' Top Sadlerochit 8612' 8429' 42SB 8708' 8520' TCGL/Zone 3 8737' 8547' BCGL/Zone 2C 8851' 8645' 23SB/Zone 2B(Upper Unit) 8953' 8723' 22TS/Zone 2B(Lower Unit) 8993' 8751' 21 TS/Zone 1B 9070' 8800' Top Zone 1B 9155' 8844' TDF/Zone 1A 9303' 8892' Base of Sadlerochit 9526' 8917' Base of Sadlerochit(Inverted) 9692' 8918' Formation at Total Depth(Name): Zone 1A 11015' 8927' 31.List of Attachments: Summary of Daily Drilling Reports,Well Schematic Diagram,Surveys and a Leak-Off Test Summary. 32.I hereby certify that the foregoing is true and correct to the best of my knowledge. Signed: Sondra Stewaman Title: Drilling Technologist Date:I C) " (;7"' ( L) PBU 05-31 B 210-085 Prepared By Name/Number. Sondra Stewman,564-4750 Well Number Permit No./Approval No. Drilling Engineer: Abby Warren, 564-5720 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 TVD for the top and base of permafrost in Box 28. Item 23: Attached supplemental records for this well should show the details of any multiple stage cementing and the location of the cementing tool. Item 24: If this well is completed for separate production from more than one interval(multiple completion),so state in item 1,and in item 23 show the producing intervals for only the interval reported in item 26. (Submit a separate form for each additional interval to be separately produced, showing the data pertinent to such interval). Item 27: Method of Operation: Flowing,Gas Lift,Rod Pump,Hydraulic Pump,Submersible,Water Injection,Gas Injection,Shut-In,or Other(explain). Item 28: Provide a listing of intervals cored and the corresponding formations,and a brief description in this box. Submit detailed description and analytical laboratory information required by 20 AAC 25.071. Item 30: Provide a listing of intervals tested and the corresponding formation,and a brief summary in this box. Submit detailed test and analytical laboratory information required by 20 AAC 25.071. Form 10-407 Revised 12/2009 Submit Original Only North America -ALASKA- BP Page 1 of 1 Operation Summary Report Common Well Name: 05-31 AFE No Event Type:MOBILIZATION(MOB) Start Date: 8/12/2010 End Date: 8/13/2010 X3-00VWC-C(536,723.00) Project:Prudhoe Bay Site: PB DS 05 Rig Name/No.:NABORS 7ES Spud Date/Time: Rig Release: 9/2/2010 Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:05-31 ©71.00ft(above Mean Sea Level) _ Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 8/12/2010 16:00 - 00:00 8.00 MOB N WAIT 7.50 PRE WAITING ON DS 05-31B PREP. -FINAL SLICKLINE/WELLS GROUP WORK. -DISCONNECT ELECTRICAL POWER FROM WELL HOUSE. -WELL HOUSE REMOVAL. -S-RISER REMOVAL. -TOOL SERVICES PAD PREP. 8/13/2010 00:00 - 19:00 19.00 MOB N WAIT 7.50 PRE WAITING ON DS 05-31B PREP. -FINAL SLICKLINE/WELLS GROUP WORK. -DISCONNECT ELECTRICAL POWER FROM WELL HOUSE. -WELL HOUSE REMOVAL. S-RISER REMOVAL. -TOOL SERVICES PAD PREP. -WATCHED RIG TONG AND STEAM SAFETY TRAINING VIDEO. -MOVED SHOP AND SATELLITE CAMP. -SPREAD HERCULITE AND SPOTTED MATTING BOARDS. 19:00 - 23:00 4.00 MOB P PRE SPOT SUB AND PITS OVER DS 05-31 B. -HOOK UP ALL FLOW LINES AND ELECTRICAL CONNECTIONS. -PREPARE CELLAR FOR OA PRESSURE TEST. -USING LRS,PRESSURE TEST OA TO 2,000 • PSI FOR 30 CHARTED MINUTES;TEST GOOD. ***RIG ACCEPTED AT 2300 HRS*** 23:00 - 00:00 1.00 MOB P PRE DS 05-31B PRE-SPUD AND DS 05-33B AFTER-ACTION REVIEW AND PTSM WITH WILL TURNER'S CREW. -TAKE ON 9.8 PPG BRINE TO PITS. Printed 9/20/2010 4:17:43PM • North America -ALASKA- BP Page 1 of 14 Operation Summary Report Common Well Name:05-31 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 8/14/2010 End Date: X3-00VWC-C(3,600,422.00) Project: Prudhoe Bay Site: PB DS 05 Rig Name/No.:NABORS 7ES Spud Date/Time: Rig Release:9/2/2010 Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:05-31 @71.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) ft 8/14/2010 00:00 - 02:30 2.50 DHB P DECOMP RU DSM LUBRICATOR AND TEST TO 250 PSI LOW AND 3,500 PSI HIGH;TEST GOOD. -PULL BPV. -RD DSM LUBRICATOR. 02:30 - 05:00 2.50 CLEAN P DECOMP RU TO REVERSE CIRCULATE OUT 5 BBLS OF DIESEL FROM TUBING AND THEN SWAP LINES TO PUMP DOWN TUBING TO CIRCULATE 10 BBLS OF DIESEL FROM THE IA. -PUMP 227 BBLS AT 3 BPM,1,363 PSI. -RECOVER 15 BBLS OF DIESEL. 05:00 - 05:30 0.50 DHB P ■ DECOMP INSTALL BPV AND CONDUCT A ROLLING TEST FROM BELOW TO 1,000 PSI;TEST GOOD. 05:30 - 08:00 2.50 WHSUR P DECOMP ND TREE AND ADAPTER FLANGE. 08:00 - 12:00 4.00 WHSUR P DECOMP NU BOP. 12:00 - 13:00 1.00 WHSUR P ® DECOMP RU TEST EQUIPMENT. 13:00 - 18:00 5.00 WHSUR P DECOMP PRESSURE TEST BOPE. -TEST BOPE AND CHOKE MANIFOLD TO 250 PSI LOW AND 3,500 PSI HIGH WITH 3-1/2"AND 4"TEST JOINTS. TEST ANNULAR PREVENTER TO 250 PSI LOW AND 2,500 PSI HIGH WITH 3-1/2"TEST JOINT. -TESTS GOOD. TEST WITNESSED BY JEFF JONES,AOGCC; BP WSLS DAVE NEWLON AND RAY PLATT; AND NAD TOOLPUSHERS CHRIS WEAVER AND LENWARD TOUSSANT. 18:00 - 19:30 1.50 WHSUR N RREP 7.50 DECOMP REMOVE AND REDRESS 3-1/2"X 6"VBRS AFTER INITIAL TEST FAILURE. 19:30 - 20:30 1.00 WHSUR P DECOMP PRESSURE TEST 3-1/2"X 6"VBRS TO 250 PSI LOW AND 3,500 PSI HIGH WITH 3-1/2"AND 4" TEST JOINTS. -TEST WITNESSED BY JEFF JONES,AOGCC; BP WSL RAY PLATT;AND NAD TOOLPUSHER LENWARD TOUSSANT. -TEST GOOD. 20:30 - 21:00 0.50 WHSUR P DECOMP RD TEST EQUIPMENT. 21:00 - 21:30 0.50 DHB P DECOMP PULL BLANKING PLUG. 21:30 - 23:00 1.50 DHB P DECOMP RU DSM LUBRICATOR AND EXTENSION. -TEST TO 250 PSI LOW AND 3,500 PSI HIGH AND CHART RECORD;TEST GOOD. -PULL BPV. 23:00 - 23:30 0.50 PULL P DECOMP MU XO AND 9-3/4"LH ACME PULLING TOOL. -ENGAGE TUBING HANGER. -BOLDS. -UNSEAT HANGER AT PU WT 110K. -PULL TUBING HANGER TO RIG FLOOR. 23:30 00:00 0.50 PULL P ■- DECOMP -CIRCULATE BBL SURFACE E SURFACE. -PUMP 25 BBL BARAKLEAN SOAP PILL. -302 BBLS,350 GPM,1,775 PSI. 8/15/2010 00:00 - 01:00 1.00 PULL P ■. DECOMP -CIRCULATE BBL SURFACE E SURFACE. -PUMP 25 BBL BARAKLEAN SOAP PILL. -302 BBLS,350 GPM,1,775 PSI. Printed 9/20/2010 4:19:20PM North America -ALASKA- BP Page 2 of 14 Operation Summary Report Common Well Name: 05-31 AFE No Event Type:RE-ENTER-ONSHORE(RON) Start Date:8/14/2010 End Date: X3-00VWC-C(3,600,422.00) Project:Prudhoe Bay Site:PB DS 05 Rig Name/No.:NABORS 7ES Spud Date/Time: Rig Release:9/2/2010 Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:05-31 @71.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 01:00 - 03:30 2.50 PULL P DECOMP LD 20 JTS OF 3-1/2"EUE,8RD,9.3#TUBING. 03:30 - 04:30 1.00 PXA P DECOMP RIH WITH 3-1/2"TUBING STRING ON 22 JTS OF 4"DP SINGLES FROM PIPESHED TO 8,608'. -LD 1 JT TO 8,585'. 04:30 - 06:00 1.50 PXA P DECOMP RU/SPOT 20-BBL,17 PPG BALANCED CEMENT PLUG FROM 8,608'TO—8,100'. -150 SKS,YIELD=1 CU FT/SK. -5 BPM,846 PSI. -DROP 5"FOAM WIPER BALL AND FOLLOW IT WITH 15 BBLS 13 PPG MUD PUSH II;20 BBLS 17 PPG CLASS G CEMENT;AND 5 BBLS 13 PPG MUD PUSH II. -DISPLACE WITH 63.5 BBLS 9.8 PPG NACL BRINE. 06:00 - 06:30 0.50 PXA P DECOMP POH WITH 3-1/2"TUBING ON 4"DP STANDS TO ABOVE CEMENT PLUG AT 7,913'. 06:30 - 07:30 1.00 PXA P DECOMP DROP 5"FOAM WIPER BALL AND CIRCULATE SURFACE TO SURFACE. -288 BBLS,300 GPM,1,217 PSI. -MUD PUSH II SEEN AT SURFACE WITH SMALL TRACES OF CEMENT. -MONITOR WELL;WELL ON 1 BBUHR DRINK. 07:30 - 19:00 11.50 PULL P DECOMP LD REMAINING 3-1/2"EUE,8RD,9.3#TUBING AND ASSOCIATED COMPLETION EQUIPMENT. -1 TUBING HANGER,269 FULL JTS,1 PUP JT, 7 GLMS,1 SSSV,1 CHEMICAL INJECTOR,278 CLAMPS AND NAILS,AND 23 SS BANDS RECOVERED;ALL NORM'ED OK. -JT WAS CLEAN CUT 1.5'BELOW BOTTOM OF CHEMICAL INJECTOR. -2 EA.25"SSSV AND 1 EA.375"CHEMICAL CONTROL LINES PURGED AND SPOOLED UP. 19:00 - 19:30 0.50 BOPSUR P DECOMP RU TEST EQUIPMENT. 19:30 - 20:30 1.00 BOPSUR P DECOMP TEST BOTTOM 2-7/8"X 5"PIPE RAMS TO 250 PSI LOW AND 3,500 PSI HIGH WITH BOTH 3.5" AND 4"TEST JTS. -BOTH TESTS GOOD. -TEST WITNESSED BY BP WSL RAY PLATT AND NAD PUSHER LENWARD TOUSSANT. -RD AND BD LINES. 20:30 - 21:00 0.50 BOPSUR P DECOMP INSTALL WEAR BUSHING. 21:00 - 22:00 1.00 CLEAN P DECOMP PU BHA#1 TO 636'. -BHA#1 CONSISTS OF: 6-1/8"HUGHES TRI-CONE ATJ-4 MILLTOOTH BIT,7"CASING SCRAPER,FLOAT SUB,STABILIZER,XO,AND 21 JTS 4"HWDP. 22:00 - 00:00 2.00 CLEAN P DECOMP RIH WITH BHA#1 ON 7 EA 4"DP STANDS FROM THE DERRICK AND THEN 4"DP SINGLES FROM THE PIPESHED TO 2,517'. 8/16/2010 00:00 - 04:30 4.50 CLEAN P DECOMP RIH WITH BHA#1 ON 4"DP SINGLES FROM THE PIPESHED TO 7,750'. 04:30 - 05:00 0.50 CLEAN P DECOMP WASH DOWN WITH BHA#1 FROM 7,750'TO TOC AT 7,969'. -180 GPM,465 PSI. -TAG UP WITH 5K TWICE. -ROLL BACK PUMPS AND TAG UP WITH 15K TO CONFIRM TOC. Printed 9/20/2010 4:19:20PM North America -ALASKA- BP Page 3 of 14 Operation Summary Report Common Well Name:05-31 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/14/2010 End Date: X3-00VWC-C(3,600,422.00) Project:Prudhoe Bay Site: PB DS 05 Rig Name/No.:NABORS 7ES Spud Date/Time: Rig Release:9/2/2010 Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:05-31 @71.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 05:00 - 06:00 1.00 CLEAN P DECOMP CBU. -PUMP 40-BBL HI-VIS SWEEP. -500 GPM,2,660 PSI. -80 RPM. 06:00 - 08:30 2.50 CLEAN P -_ DECOMP POH FROM 7,969'ON 4"DP AND HWDP STANDS TO 25'. 08:30 - 09:00 0.50 CLEAN P DECOMP LD CLEAN-OUT BHA#1. 09:00 - 11:00 2.00 STCTPL P DECOMP PJSM WITH ALL HANDS. ■ -RU E-LINE FOR USIT/GR/CCL LOG AND EZSV RUN. 11:00 - 16:00 5.00 STCTPL P DECOMP RIH WITH E-LINE USIT LOG TO 4,500'. -LOG OUT TO SURFACE. -RIH TO 3,700'. -LOG OUT TO SURFACE. -RD USIT/GR/CCL. 16:00 - 19:00 3.00 STCTPL P DECOMP PJSM WITH HES AND SLB HANDS. -MU 7"EZSV. -RIH WITH 7"EZSV. -CORRELATE DEPTHS. -SET EZSV AT 3,780'. -POH AND RD TOOLS. 19:00 - 20:00 1.00 STCTPL P DECOMP PRESSURE TEST 7"CASING AND EZSV TO 2,500 PSI FOR 30 MINUTES;TEST GOOD. -RD AND BD. -RD E-LINE. 20:00 - 22:00 2.00 STCTPL P DECOMP PJSM WITH BAKER AND RIG HANDS. -MU 5-1/2"CASING CUTTER BHA,WHICH CONSISTS OF 5-1/2"CASING CUTTER, STABILIZER,XO,AND 4"HWDP. -RIH TO 3,410'. -LOCATE COLLAR AT 3,425'. -PU WT 85K,SO WT 90K,ROT WT 90K. -450 FT LBS FREE ROT TQ. 22:00 - 22:30 0.50 STCTPL P DECOMP CUT 7"CASING AT 3,410'. -600 PSI,1,100 FT-LBS TQ. -80 RPM. -CONFIRM CUT WHEN WE SEE 425 PSI ON OA AND BY LOCATING CUT TWICE. 22:30 - 00:00 1.50 STCTPL P DECOMP POH TO 3,409'. -CLOSE ANNULAR PREVENTER. -CIRCULATE DEAD CRUDE OUT OF OA AT 2 BPM,675 PSI. -PUMPED 25-BBL BARAKLEAN SOAP PILL. -9.8 PPG MW NACL BRINE. 8/17/2010 00:00 - 01:30 1.50 STCTPL P DECOMP POH TO 3,409'. -CLOSE ANNULAR PREVENTER. -CIRCULATE DEAD CRUDE OUT OF OA AT 2 BPM,675 PSI. -PUMPED 25-BBL BARAKLEAN SOAP PILL. -9.8 PPG MW NACL BRINE. 01:30 - 03:00 1.50 STCTPL P DECOMP POH FROM 3,409'TO 9'. 03:00 - 03:30 0.50 STCTPL P -_ DECOMP LD 5-1/2"CASING CUTTER BHA. -CLEAN AND CLEAR RIG FLOOR. 03:30 - 04:30 1.00 BOPSUR P -_ DECOMP CHANGE OUT TOP 3-1/2"X 6"VBRS TO 7" FIXED RAMS. Printed 9/20/2010 4:19:20PM North America -ALASKA- BP Page 4 of 14 Operation Summary Report Common Well Name:05-31 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/14/2010 End Date: X3-00VWC-C(3,600,422.00) Project: Prudhoe Bay Site:PB DS 05 Rig Name/No.:NABORS 7ES Spud Date/Time: Rig Release:9/2/2010 Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:05-31 @71.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 04:30 - 05:00 0.50 BOPSUR P DECOMP PRESSURE TEST 7"FIXED RAMS WITH 7" TEST JT. -PRESSURE TEST TO 250 PSI LOW AND 3,500 PSI HIGH;TESTS GOOD. -TEST WITNESSED BY BP WSL RAY PLATT AND NAD PUSHER LENWARD TOUSSANT. -RD/LD TEST EQUIPMENT. 05:00 - 05:30 0.50 STCTPL P DECOMP MONITOR WELL AND PREP BOP STACK FOR PULLING 7"PACK-OFF. -WELL DEAD. -DRAIN/SUCK OUT BOP STACK. 05:30 - 07:00 1.50 STCTPL P DECOMP PULL 7"PACK-OFF. 07:00 - 08:00 1.00 STCTPL P DECOMP PU BAKER 7"SPEAR AND ENGAGE 7" CASING. -PU WT 115K TO UNSEAT 7"CASING AND POH TO RIG FLOOR. 08:00 - 08:30 0.50 STCTPL P - DECOMP CBU. -375 GPM,250 PSI. 08:30 - 09:00 0.50 STCTPL P DECOMP LD 7"CASING SPEAR. 09:00 - 15:00 6.00 STCTPL P DECOMP POH AND LD 7",26#,L-80 CASING FROM 3,410'TO SURFACE. PUWT115K,SOWT105K. 77 FULL JTS,1 3181'CUT JT,75 CENTRALIZERS,150 NAILS,AND 1 CASING MANDREL HANGER RECOVERED FROM WELL;ALL NORM'ED OK. -RD AND CLEAN AND CLEAR RIG FLOOR. 15:00 - 16:00 1.00 BOPSUR P ® DECOMP CHANGE OUT TOP 7"FIXED RAMS TO 3-1/2"X 6"VBRS. 16:00 - 17:00 1.00 BOPSUR P DECOMP PRESSURE TEST 3-1/2"X 6"VBRS WITH 4" TEST JT. -PRESSURE TEST TO 250 PSI LOW AND 3,500 PSI HIGH;TESTS GOOD. -TEST WITNESSED BY BP WSL MATT MARTYN AND NAD PUSHER CHRIS WEAVER. -RD/LD TEST EQUIPMENT. -INSTALL WEAR RING. 17:00 - 18:00 1.00 CLEAN P DECOMP PU 9-5/8"SCRAPER BHA TO 945'. -BHA CONSISTS OF: 8-3/4"HUGHES MX-C1 TRI-CONE MILLTOOTH BIT,9-5/8"CASING SCRAPER, FLOAT SUB,STRING MILL,1 JT 5" HWDP,3 STANDS 6-1/4"DCS,XO,AND 7 STANDS 4"HWDP. -FUNCTION TEST RAMS. 18:00 - 19:00 1.00 CLEAN P DECOMP RIH WITH 9-5/8"SCRAPER BHA FROM 945'TO 3,410'. -TAG STUMP ON DEPTH AT 3,410'. -PU WT 105K,SO WT 105K. 19:00 - 19:30 0.50 CLEAN P DECOMP CIRCULATE HOLE UNTIL CLEAN. -300 BBLS,560 GPM,1,670 PSI. -40 RPM. -945 FT LBS TQ. -ROT WT 105K. -MONITOR WELL;WELL STATIC. 19:30 - 20:30 1.00 CLEAN P -_ DECOMP PUMP DRY JOB,BD TOP DRIVE,AND POH WITH SCRAPER BHA FROM 3,410'TO 945'. 20:30 - 21:30 1.00 CLEAN P ._ DECOMP RACK BACK HWDP,DCS,AND LD SCRAPER BHA.CLEAN AND CLEAR RIG FLOOR. Printed 9/20/2010 419.20PM North America -ALASKA- BP Page 5 of 14 Operation Summary Report Common Well Name: 05-31 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/14/2010 End Date: X3-00VWC-C(3,600,422.00) Project:Prudhoe Bay Site: PB DS 05 Rig Name/No.:NABORS 7ES Spud Date/Time: Rig Release:9/2/2010 Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:05-31 @71.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 21:30 - 00:00 2.50 STWHIP P WEXIT RU E-LINE WITH CCL AND 9-5/8"EZSV AND RIH TO 3,410'. LOG ACROSS CASING COLLAR AT 3460'MD. SET EZSV WITH TOP OF BRIDGE PLUG AT 3,355';SAW POSITIVE INDICATION OF SETTING AT SURFACE. 8/18/2010 00:00 - 01:00 1.00 STWHIP P WEXIT POH WITH E-LINE FROM 3,355'. 01:00 - 02:00 1.00 STWHIP P WEXIT RU TEST EQUIPMENT AND TEST 9-5/8" CASING AND EZSV TO 2,500 PSI FOR 30 MINUTES. -LOST 60 PSI IN FIRST 15 MINUTES AND 30 PSI IN LAST 15 MINUTES;TEST GOOD. 02:00 - 03:30 1.50 STWHIP P WEXIT PU 9-5/8"WHIPSTOCK WINDOW MILLING BHA TO 971'. -BHA CONSISTS OF:ANCHOR(SET TO SHEAR AT 18K),9-5/8"GEN II WHIPSTOCK SLIDE(MILLING ASSEMBLY SET TO SHEAR OFF AT 45K),8-1/2"WINDOW STARTER MILL, 8-3/8"LOWER WATERMELON MILL,FLEX JT, 8-3/4"UPPER WATERMELON MILL,1 JT 5" HWDP,FLOAT/SAVER SUB, UBHO SUB,3 STANDS 6-1/4"DCS,XO,AND 7 STANDS 4" HWDP. 03:30 - 05:30 2.00 STWHIP P WEXIT RIH WITH 9-5/8"WHIPSTOCK WINDOW MILLING BHA FROM 971'TO 3,045'. 05:30 - 07:00 1.50 STWHIP P WEXIT RU E-LINE AND RIH W/GYRO TO ORIENT 125 DEGREES GYRO AZIMUTH AND RIH TO SET 9-5/8"WINDOW MILLING WHIPSTOCK ON 9-5/8"EZSV AT 3,355'. 07:00 - 08:00 1.00 STWHIP P WEXIT SET BAKER GEN II WHIPSTOCK ON 9-5/8" EZSV AT 3,355'. -SHEAR ANCHOR BOLTS BY SO WT 20K; POSITIVE SURFACE INDICATION THAT WAS CONFIRMED BY PU WT 20K. -MILLING ASSEMBLY SHEARED OFF WHIPSTOCK BY SO WT 60K;POSITIVE SURFACE INDICATION OF SHEARING. -105K PU WT,105K SO WT BEFORE SETTING DOWN ON EZSV. -100K PU WT,105K SO WT AFTER SETTING WHIPSTOCK. 08:00 - 09:00 1.00 STWHIP P WEXIT DISPLACE WELL FROM 9.8 PPG NACL BRINE TO 10.2 PPG LSND MUD. 09:00 - 15:00 6.00 STWHIP P WEXIT MILL 9-5/8"WINDOW AND DRILL 20'OF NEW FORMATION OUTSIDE OF WINDOW TO 3,375'. -PU WT 105K,SO WT 105K,ROT WT 105K. -RPM 90. -WOB 10K. -500 GPM,890 PSI. -3K TQ ON,1.5K TQ OFF. -TOW 3,334',BOW 3,351'. -160#OF METAL SHAVINGS RECOVERED FROM MILLED-OUT WINDOW. -10.2 PPG MW IN AND OUT.15:00 - 15:30 0.50 STWHIP P WEXIT WORK WINDOW X2 WITH ROTATION,X2 WITHOUT ROTATION,AND 1X WITHOUT PUMPS;GOOD WINDOW. -10.2 PPG MW IN AND OUT. -MONITOR WELL;WELL STATIC. -i A;5 DS s— 31 (6 f'rfl Printed 9/20/2010 4:19:20PM North America -ALASKA- BP Page 6 of 14 Operation Summary Report Common Well Name: 05-31 AFE No Event Type: RE-ENTER-ONSHORE (RON) Start Date:8/14/2010 End Date: ,X3-00VWC-C(3,600,422.00) Project:Prudhoe Bay Site: PB DS 05 Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release:9/2/2010 Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:05-31 @71.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 15:30 - 16:30 1.00 STWHIP P WEXIT LOT. -RU TO CONDUCT LOT. —( -POH TO INSIDE OF 9-5/8"WINDOWAT 3,310' �-0 AND PERFORM LOT TO 13.33 PPG EMW. -SURFACE PRESSURE OF 546 PSI. -RD/BD LINES. 16:30 - 18:00 1.50 STWHIP P WEXIT POH WITH WINDOW MILLING BHA FROM 3,310'TO 306'. -PUMP DRY JOB. -MONITOR WELL;WELL STATIC. 18:00 - 18:30 0.50 STWHIP P WEXIT LD WINDOW MILLING BHA TO 280'. 18:30 - 19:00 0.50 STWHIP P WEXIT SERVICE TOP DRIVE. 19:00 - 20:00 1.00 STWHIP N RREP 287.93 WEXIT REPAIR SKATE. 20:00 - 21:00 1.00 STWHIP P WEXIT FINISH LD WINDOW MILLING BHA. -UPPER 8-3/4"MILL IN GAUGE. -CLEAN AND CLEAR FLOOR. 21:00 - 22:30 1.50 STWHIP P WEXIT JET BOP STACK,FUNCTION RAMS AND CHECK RAM CAVITIES FOR METAL SHAVINGS,AND PULL AND REINSTALL WEAR RING AFTER MILLING OPERATION. -RD/BD LINES. 22:30 - 00:00 1.50 STWHIP P WEXIT PU 8-3/4"INTERMEDIATE INTERVAL DRILLING. BHA#5 TO 245'. -BHA CONSISTS OF:8-3/4"HUGHES MXL-1 MILLTOOTH BIT JETTED WITH 3X16S AND 1X14,6-3/4"XP MUD MOTOR SET AT 1.50° (WITH FLOAT),ARC6,TELESCOPE MWD, UBHO, NM IBS STABILIZER,2 X NMDCS,NM IBS STABILIZER,NMDC,FLOAT SUB,1 JT 5" HWDP,HYD JARS,X0,AND 22 JTS 4"HWDP. 8/19/2010 00:00 - 00:30 0.50 STWHIP P WEXIT CONTINUE PU/MU BHA#5 TO 902'. -SHALLOW HOLE TEST MWD;TEST GOOD. 00:30 - 02:00 1.50 STWHIP P WEXIT RIH WITH BHA#5 FROM 902'TO 2,700'. 02:00 - 02:30 0.50 STWHIP P WEXIT SLIP AND CUT 86'OF DRILLING LINE. 02:30 - 04:00 1.50 STWHIP P WEXIT MAD PASS IN HOLE FROM 2,700'TO 3,250'. -650 FT/HR. 04:00 - 06:30 2.50 STWHIP P WEXIT RU E-LINE AND GYRO FOR DRILLING AHEAD. -RUN GYRO AND ORIENT PER DD. 06:30 - 07:00 0.50 STWHIP P WEXIT FINISH MAD PASS IN HOLE FROM 3,250'TO 3,341'. -BIT AT TD;GR SENSOR 34'UP IN DRILL STRING. 07:00 - 12:00 5.00 DRILL P INT1 DRILL AHEAD IN 8-3/4"INTERMEDIATE INTERVAL FROM 3,375'TO 3,580'. -RAN GYRO THROUGHOUT THIS INTERVAL; FIRST GOOD MWD SURVEY AT 3,565'. -PU WT 100K,SO WT 95K,ROT WT 100K. -RPM 80. -WOB 25K. -550 GPM,2,038 PSI ON,1,870 PSI OFF. -3K TQ ON,1K TQ OFF. -10.2 PPG MW IN AND OUT. -CALC ECD 10.55 PPG,ACT ECD 10.97 PPG. -AST 1.02,ART.58,ADT 1.6. Printed 9/20/2010 4:19:20PM North America -ALASKA- BP Page 7 of 14 Operation Summary Report Common Well Name: 05-31 AFE No Event Type: RE-ENTER-ONSHORE (RON) Start Date:8/14/2010 End Date: X3-00VWC-C(3,600,422.00) Project:Prudhoe Bay Site:PB DS 05 Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release:9/2/2010 Rig Contractor:NABORS ALASKA DRILLING INC. UWI: A ctive Datum:05-31 @71.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12:00 - 00:00 12.00 DRILL P INT1 DRILL AHEAD IN 8-3/4"INTERMEDIATE INTERVAL FROM 3,580'TO 4,662'. -PU WT 120K,SO WT 115K,ROT WT 115K. -RPM 80. -WOB 25-30K. -550 GPM,2,620 PSI ON,2,390 PSI OFF. -3.2K TQ ON,1.2K TQ OFF. -10.1 PPG MW IN AND OUT. -CALC ECD 10.6 PPG,ACT ECD 11.23 PPG. -AST 3.69,ART 3.6,ADT 7.29. 8/20/2010 00:00 - 07:30 7.50 DRILL P INT1 QRILL AHEAD IN 8-3/4"INTERMEDIATE INTERVAL FROM 4,662'TO 5,330'. -PU WT 130K,SO WT 120K,ROT WT 120K. -RPM 80. -WOB 25K. -550 GPM,2,536 PSI ON,2,362 PSI OFF. -3K TQ ON,2K TQ OFF. -10.2 PPG MW IN AND OUT. -CALC ECD 10.57 PPG,ACT ECD 10.95 PPG. -AST 3.41,ART 2.55,ADT 5.96. 07:30 - 08:30 1.00 DRILL P INT1 CBU. -550 GPM,2,347 PSI. -80 RPM. -MONITOR WELL;WELL STATIC. 08:30 - 11:00 2.50 DRILL P INT1 POH ON ELEVATORS FROM 5,330'TO 902'. -WIPE 25K OVERPULLS ON THREE OCCASIONS IN THE SV2 AND SV3. 11:00 - 12:00 1.00 DRILL P INT1 RACK BACK BHA#5 FROM 902'TO 45'. -DOWNLOAD MWD TOOLS. 12:00 - 12:30 0.50 DRILL P INT1 LD REMAINDER OF BHA#5,UPLOAD MWD TOOLS,AND LD BIT#3. -BIT GRADE: 1,2,WT,G,E, I,BU,PR. 12:30 - 14:30 2.00 DRILL P INT1 PU/MU/RIH WITH BHA#6/BIT#4 TO 899'. -BHA#6 CONSISTS OF: 8-3/4"HYCALOG DTX619M-D2 BIT JETTED WITH 6 X 13S,6.75" XP MUD MOTOR SET AT 1.50°,ARC6, TELESCOPE MWD,NM IBS STABILIZER,2 X NMDCS,NM IBS STABILIZER,NMDC,FLOAT SUB,1 JT 5"HWDP, HYD JAR,XO,22 JTS 4" HWDP,44 JTS 4"DP,AND A GHOST REAMER 2,285'BEHIND THE BIT. -SHALLOW TEST MWD AT 470 GPM,1,020 PSI. -PU WT 66K,SO WT 66K. 14:30 - 17:00 2.50 DRILL P INT1 RIH WITH BHA#6 ON 4"DP STANDS FROM 899'TO 5,228'. -WASH DOWN FROM 5,228'TO 5,330'AT 295 GPM,1,132 PSI. -PU WT 126K,SO WT 120K,ROT WT 124K. -80 RPM. -2KTQ. -NO FILL ON BOTTOM. Printed 9/20/2010 4:19:20PM North America -ALASKA- BP Page 8 of 14 Operation Summary Report Common Well Name:05-31 AFE No Event Type: RE-ENTER-ONSHORE(RON) I Start Date:8/14/2010 End Date: X3-00VWC-C(3,600,422.00) Project: Prudhoe Bay Site: PB DS 05 Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release:9/2/2010 Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:05-31 @71.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr (ft 17:00 - 00:00 7.00 DRILL P INT1 DRILL AHEAD IN 8-3/4"INTERMEDIATE INTERVAL FROM 5,330'TO 5,886'. -PU WT 140K,SO WT 125K,ROT WT 132K. -RPM 80. -WOB 12K. -568 GPM,3,013 PSI ON,2,644 PSI OFF. -5K TQ ON,3K TQ OFF. -10.2 PPG MW IN AND OUT. -CALC ECD 10.57 PPG,ACT ECD 10.86 PPG. -AST 1.74,ART 1.64,ADT 3.38. 8/21/2010 00:00 - 12:00 12.00 DRILL P INT1 DRILL AHEAD IN 8-3/4"INTERMEDIATE INTERVAL FROM 5,886'TO 7,203'. -PU WT 150K,SO WT 140K, ROT WT 145K. -RPM 100. -WOB 15K. -557 GPM,3,630 PSI ON,3,227 PSI OFF. -6K TQ ON,3K TQ OFF. -10.2 PPG MW IN AND OUT. -CALC ECD 10.52 PPG,ACT ECD 11.10 PPG. -AST 1.08,ART 6.78,ADT 7.86. -CHANGED OUT SWAB ON#2 MUD PUMP AT 0200 HRS. 12:00 - 00:00 12.00 DRILL P INT1 DRILL AHEAD IN 8-3/4"INTERMEDIATE INTERVAL FROM 7,203'TO 7,968'. -PU WT 175K,SO WT 150K,ROT WT 155K. -RPM 100. -WOB 15K. -557 GPM,3,970 PSI ON,3,630 PSI OFF. 6K TQ ON,3K TQ OFF. -10.2 PPG MW IN AND OUT. -CALC ECD 10.5 PPG,ACT ECD 11.06 PPG. -AST 4.62,ART 3.91,ADT 8.53. 8/22/2010 00:00 - 09:30 9.50 DRILL P INT1 DRILL AHEAD IN 8-3/4"INTERMEDIATE INTERVAL FROM 7,968'TO INTERVAL TD AT 8,507'. -PU WT 175K,SO WT 165K,ROT WT 170K. -RPM 100. 10i1 -WOB 15K. -557 GPM,3,875 PSI ON,3,680 PSI OFF. -6K TQ ON,3K TQ OFF. -10.2 PPG MW IN AND OUT. -CALC ECD 10.51 PPG,ACT ECD 11.01 PPG. -AST 4.11,ART 2.60,ADT 6.71. -CHANGED OUT SWAB ON#1 MUD PUMP AT 0500 HRS. -GEOS PICKED TD AT 8,507';CONFIRMED BY PRESENCE OF GLAUCONITIC SANDS IN SAMPLES AT TD. Printed 9/20/2010 4:19:20PM North America -ALASKA- BP Page 9 of 14 Operation Summary Report Common Well Name: 05-31 I AFE No Event Type: RE-ENTER-ONSHORE(RON) I Start Date: 8/14/2010 End Date: 'X3-00VWC-C(3,600,422.00) Project: Prudhoe Bay I Site: PB DS 05 Rig Name/No.: NABORS 7ES I Spud Date/Time: Rig Release: 9/2/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum:05-31 @71.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 09:30 - 12:00 2.50 DRILL P INT1 CBU X4. -570 GPM,3,850 PSI. -PUMP 30 BBL 30#/BBL NUT PLUG SWEEP -DILUTE WITH FRESH 290-BBL OF 10.2 PPG LSND MUD. -900 PSI PRESSURE DROP OVER 10 MINUTES AT 3RD BOTTOMS UP AS NUTPLUG SWEEP HALFWAY INTO CASING AND NEW MUD GOING AROUND BIT INTO OPEN HOLE. MWD TURBINE RPM HAD—2%CHANGE EXPECTED FROM NEW MUD. DISCUSS WASHOUT POSSIBILITIES,CHECK FOR LEAKS. -CONTINUE PUMPING AT 400 GPM,1,833 PSI AND SEE PRESSURESSTABALIZE AND GRADUALLY GAIN BACK 150 PSI. -MONITOR WELL BEFORE POH;WELL STATIC. -10.2 PPG MW IN AND OUT. 12:00 - 13:30 1.50 DRILL P INT1 POH ON ELEVATORS FROM 8,507'TO 8,231' WITH NO OVERPULLS. (THRZ @ 8,247) PRESSURE TEST SURFACE EQUIPMENT-NO LEAKS FOUND. POH 3 MORE STANDS WITHOUT OVERPULLS OR SWAPPING. START SEEING OVERPULLS 15-25K AT 7780' SLOW PULLING SPEED AND SEE SWABBING THROUGH TO 7570 ALONG WITH—30K OVERPULLS. '13:30 - 21:30 8.00 DRILL P INT1 RIH FROM 7,550'TO 7,767'DUE TO SWABBING. BACKREAM FROM 7,767'TO 5,698'. -560 GPM,2,940 PSI. -100 RPM. -3KTQ. -PUMP OUT GHOST REAMER THROUGH 9-5/8"WINDOW FROM 5,698'TO 5,604'BIT DEPTH; SEE 5K DRAG AT BOW AT 3,351'. 21:30 - 22:30 1.00 DRILL P INT1 CBU X2 WITH REAMER ABOVE 9-5/8" WINDOW. -RECIPROCATE PIPE FROM 5,604'TO 5,510'. -576 GPM,2,970 PSI. -2K TQ. -100 RPM. -PU WT 135K,SO WT 125K,ROT WT 124K. -CALC ECD 10.14 PPG,ACT ECD 10.83 PPG. -10.2 PPG MW IN AND OUT. -MONITOR WELL BEFORE RIH;WELL STATIC. 22:30 - 00:00 1.50 DRILL P INT1 RIH FROM 5,510'TO 8,507'. -NO DRAG EXPERIENCED. -NO FILL ON BOTTOM. 8/23/2010 00:00 - 02:00 2.00 DRILL P INT1 CBU X2. -STAGE PUMPS TO 550 GPM,3,345 PSI. -PU WT 180K,SO WT 160K,ROT WT 165K. -80 RPM. -10.2 PPG MW IN AND OUT. -SLUG OF CLAY AND SAND FOR 3K STROKES AT BU AND CLEANED UP. -MONITOR WELL BEFORE POH;WELL I STATIC. Printed 9/20/2010 4:19:20PM North America -ALASKA- BP Page 10 of 14 Operation Summary Report Common Well Name: 05-31 AFE No Event Type: RE-ENTER-ONSHORE (RON) Start Date:8/14/2010 End Date: X3-00VWC-C(3,600,422.00) Project:Prudhoe Bay Site:PB DS 05 Rig Name/No.:NABORS 7ES Spud Date/Time: Rig Release:9/2/2010 Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:05-31 @71.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) ft 02:00 - 05:30 3.50 DRILL P ■- INT1 ELEVATORS FROM EN TO 899'. -NO DRAG DRAG OR OVERPULL SEEN. -PUMP DRY JOB AT 5,604'. 05:30 - 07:30 2.00 DRILL P -_ INT1 LD BHA#6 FROM 899'TO SURFACE. -MONITOR WELL;WELL STATIC. 07:30 - 08:00 0.50 DRILL P INT1 CLEAN AND CLEAR RIG FLOOR. 08:00 - 09:00 1.00 CASING P ■ INT1 CHANGE 3-1/2"X 6"VBRS TO 7"FIXFr)-RC)RF , RAMS. n -RU TEST EQUIPMENT. gal 09:00 - 10:30 1.50 CASING P INT1 TEST BOP. v -PRESSURE TEST TOP PIPE RAMS TO 250 PSI LOW,3,500 PSI HIGH FOR 5 MINUTES. -SUSPECT LOWER TEST PLUG LEAKING BY; CHECK SURFACE EQUIPMENT AND CONFIRM. -CHANGE OUT TEST PLUGS. -TEST GOOD ON TOP PIPE RAMS AFTERWARDS. 10:30 - 13:00 2.50 CASING P INT1 RU TO RIH WITH 7",26#,TC-II CASING. -MAKE DUMMY RUN WITH LANDING JT AND MANDREL HANGER. 13:00 - 18:30 5.50 CASING P INT1 RIH WITH 7",26#,TC-II CASING TO ABOVE 9-5/8"WINDOW AT 3.292'. -TORQUE-TURN CASING TO 10,100 FT-LBS OPTIMUM MU TQ. 18:30 - 19:30 1.00 CASING P INT1 CIRCULATE 1-1/2 7"CASING VOLUMES AT 9-5/8"WINDOW. -STAGE PUMP RATES TO 7 BPM,546 PSI. -PU WT 108K,SO WT 108K. -NO LOSSES WHILE CIRCULATING. 19:30 - 00:00 4.50 CASING P INT1 RIH WITH 7",26#,TC-II CASING FROM 3,292' TO 5,833'. -CIRCULATE 5 MINUTES EVERY 20 JTS. -TORQUE-TURN CASING TO 10,100 FT-LBS OPTIMUM MU TQ. -PU WT 175K,SO WT 155K. 8/24/2010 00:00 - 03:00 3.00 CASING P INT1 RIH WITH 7",26#,TC-II CASING FROM 5,833' TO 8,150'. -CIRCULATE 5 MINUTES EVERY 20 JTS. -TORQUE-TURN CASING TO 10,100 FT-LBS OPTIMUM MU TQ. -PU WT 240K,SO WT 190K. 03:00 - 03:45 0.75 CASING P -_ INT1 CBU ABOVE HRZ. -STAGE PUMPS UP TO 7 BPM,771 PSI. 03:45 - 04:30 0.75 CASING P INT1 RIH WITH 7",26#,TC-II CASING FROM 8,150' TO 8,505'. -WASH DOWN MANDREL HANGER ON LANDING JT AND SEAT IN WELLHEAD. 04:30 - 07:00 2.50 CASING P -_ INT1 STAGE PUMPS TO 7 BPM AND 770 PSI AT 8,505'. NO RECIPRICATION. Printed 9/20/2010 4:19:20PM North America -ALASKA- BP Page 11 of 14 Operation Summary Report Common Well Name: 05-31 AFE No Event Type:RE-ENTER-ONSHORE(RON) Start Date:8/14/2010 End Date: X3-00VWC-C(3,600,422.00) Project:Prudhoe Bay Site:PB DS 05 Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: 9/2/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum:05-31 @71.00ft(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 INT1 SWITCH OVER TO SLB CEMENTERS. PUMP 5 BBLS OF 11.5 PPG MUDPUSH,SHUT DOWN AND PRESSURE TEST LINES TO 4000 PSI. CONTINUE TO PUMP A TOTAL OF 25 BBLS OF .I MUDPUSH AT 5 BPM AND 484 PSI. SHUT DOWN AND DROP BOTTOM PLUG. PUMP 42 BBLS/203 SACKS OF 15.8 PPG CI ASS,.G. CEMENT(1.16 CUFT/SACK YIELD)AT 4 BPM AND 100 PSI. SHUT DOWN AND DROP TOP PLUG.CHASE WITH 5 BBLS OF WATER FROM CEMENTERS. SWITCH TO RIG PUMP AND KICK OUT PLUG AT 7 BPM AND 337 PSI. 7 BPM,346 PSI,175 BBLS DISPLACED 7 BPM,380 PSI,225 BBLS DISPLACED,MUD PUSH AT SHOE SLOW TO 5 BPM 5 BPM,330 PSI,280 BBLS DISPLACED, CEMENT AT SHOE 5 BPM,622 PSI,300 BBLS DISPLACED, SLOW TO 2 BPM BUMP PLUG AT 08:14 WITH 317 BBLS DISPLACED AND 630 PSI PRESSURE UP TO 3500 PSIAND PRESSURE TEST FOR 30 MIN. LOST 0 PSI OVER THE ENTIRE 30 MIN TEST. 09:00 - 10:00 1.00 CEMT P INT1 RD CEMENT HEAD AND CASING RUNNING EQUIPMENT 10:00 - 12:00 2.00 WHSUR N SFAL INT1 RU AND INSTALL 9-5/8"X 7"PACKOFF AND TEST TO 5000 PSI. TEST FAILED. RU AND PULL PACKOOF 12:00 - 13:00 1.00 WHSUR P INT1 INSTALL NEW PACKOFF AND RUN IN LOCK DOWN SCREWS 13:00 - 14:30 1.50 WHSUR P INT1 RU AND PRESSURE TEST PACK OFF SEALS TO 5000 PSI FOR 30 MIN 14:30 - 15:00 0.50 WHSUR P INT1 PERFORM INJECTIVITY TEST DOWN THE OA. BREAKOVER AT 12.1 PPG EMW AND 331 PSI. PRESSURE BLEED DOWN TO 224 PSI AFTER 5 MIN AND 167 PSI AFTER 20 MIN. 15:00 - 15:30 0.50 BOPSUR P INT1 CHANGE OUT TOP RAMS TO 3-1/2"X 6" . VARIABLE RAMS 15:30 - 16:00 0.50 BOPSUR P INT1 RU TO TEST BOPE 609 16:00 - 20:30 4.50 BOPSUR P INT1 TEST BOPE AND CHOKE MANIFOLD TO 250 PSI LOW AND 3500 PSI HIGH WITH 2-7/8"AND 4-1/2"TEST JOINTS. TEST ANNULAR TO 250 PSI LOW AND 2500 PSI HIGH WITH 2-7/8" TEST JOINT. AOGCC REPRESENTIVE CHUCK SCHEVE WAIVED WITNESS TO THE TEST ON 8/24/2010. TEST WAS WITNESSED BY BP WSL'S MATT MARTYN AND RYAN CIOLKOSZ AND NAD TOOLPUSHERS CHRIS WEAVER AND BIFF PERRY 20:30 - 21:00 0.50 BOPSUR P INT1 LD TEST TOOL AND RD TEST EQUIPMENT. BLOW DOWN CHOKE AND KILL LINES. INSTALL 6-15/16"WEAR RING Printed 9/20/2010 4:19:20PM a North America -ALASKA- BP Page 12 of 14 • Operation Summary Report Common Well Name: 05-31 AFE No Event Type:RE-ENTER-ONSHORE (RON) Start Date: 8/14/2010 End Date: X3-00VWC-C(3,600,422.00) Project:Prudhoe Bay Site:PB DS 05 Rig Name/No.:NABORS 7ES Spud Date/Time: Rig Release:9/2/2010 Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:05-31 @71.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 21:00 - 00:00 3.00 CEMT P INT1 PU BHA#7:6-1/8"XR200D1GVPD BIT,1.5 DEG BEND MOTOR, IMPULSE MWD,ADN4 AND HYDRALIC JARS SIMOPS:INJECT 90 BBLS OF 10.2 PPG LSNG DRILLING MUD DOWN THE OA AT 3 BPM AND 604 PSI 8/25/2010 00:00 - 01:00 1.00 CEMT P INT1 RIH PICKING UP SINGLES TO 1100'AND SHALLOW HOLE TEST MWD SIMOPS: LITTLE RED HOT OIL SERVICES PUMPED 65 BBLS OF DEAD CRUDE DOWN ,THE OA AT 2 BPM AND 550 PSI 01:00 - 01:30 0.50 CEMT P INT1 PERFORM WELL KILL DRILL AND HAVE ALL HANDS PRACTICE ON SUPER CHOKE 01:30 - 05:30 4.00 CEMT P INT1 CONTINUE TO RIH PICKING UP SINGLES TO 3424'MD. RIH ON STANDS OF DRILL PIPE FROM 3424'TO 8417'MD 05:30 - 06:00 0.50 CEMT P INT1 TAG LANDING COLLAR AT 8417'. DRILL OUT LANDING COLLAR AND CEMENT TO 8500'MD. -250 GPM,2413 PSI -7K WOB -40 RPM,5K TQ -140K PUW,125K SOW,135K RTW 06:00 - 09:00 3.00 CEMT P INT1 MONITOR WELL,10.2 PPG MW IN AND OUT, DISPLACE TO 8.6 PPG QUIKDRIL-N MUD AT 250 GPM AND 2200 PSI. _SLOW PUMP RATES TAKEN 09:00 - 10:00 1.00 CEMT P INT1 DRILL SHOE TRACK AND 20'OF NEW HOLE FROM 8505'TO 8527'MD -250 GPM,1537 PSI -10K WOB -155K PUW,140K SOW 10:00 - 11:00 1.00 CEMT P INT1 PU TO 8499'MD AND RU TO PERFORM FIT TEST. 8.6 PPG MW IN AND OUT.PERFORM FIT TO 649 PSI AT 8527'MD/8326'TVD. 10.1 PPG EMW 11:00 - 00:00 13.00 DRILL P PROD1 DRILL AHEAD IN 6-1/8"PRODUCTION HOLE FROM 8527'TO 8837'MD -250 GPM,1852 PSI ON,1740 PSI OFF -50 RPM,2K TQ ON,2K TQ OFF -12K WOB -170K PUW,150K SOW,150K RTW ADT=9.82,ART=6.07,AST=3.75 HRS SLOW PUMP RATES TAKEN 8/26/2010 00:00 - 14:30 14.50 DRILL P PROD1 DRILL AHEAD IN 6-1/8"PRODUCTION HOI F FROM 8837'TO 9294'MD. BUILDING ANGLE FROM 35 TO 72 DEGREES. -250 GPM,1810 PSI ON,1710 PSI OFF -50 RPM,2.5K TQ ON,2K TQ OFF -15K WOB -175K PUW,155K SOW,155K RTW ADT=10.13,AST=7.38,ART=3.41 HRS 14:30 - 15:00 0.50 DRILL P PROD1 SLOW PUMP RATES TAKEN. MONITOR WELL,8.5 PPG MW IN AND OUT 15:00 - 18:00 3.00 DRILL P PROD1 MAD PASS WHILE BACK REAMING FROM 9294'TO CASING SHOE @ 8505'MD AT 620 FT/HR. -250 GPM,1586 PSI -50 RPM, 2K TQ -163K PUW,150K SOW,150K RTW Printed 9/20/2010 4:19:20PM North America -ALASKA- BP Page 13 of 14 Operation Summary Report Common Well Name:05-31 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/14/2010 End Date: X3-OOVWC-C(3,600,422.00) Project:Prudhoe Bay Site:PB DS 05 Rig Name/No.:NABORS 7ES Spud Date/Time: Rig Release:9/2/2010 Rig Contractor:NABORS ALASKA DRILLING INC. _ UWI: Active Datum:05-31 @71.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 18:00 - 21:30 3.50 DRILL P ■- PROD1 MONITOR WELL,8.6 D MW IN AND OUT PUMP DRY JOB,BLOW WTOP TOP DRIVE POOH FROM 8499'TO 232'MD 21:30 - 23:00 1.50 DRILL P PROD1 LD BHA#7:MWD,ADN4 AND MUD MOTOR. RACK BACK FLEX COLLARS AND JARS. XR200D1GVPD BIT GRADED: 2-2-WT-A-E-I-ER-BHA 23:00 - 00:00 1.00 DRILL P ■ PROD1 PU BHA#8:6-1/8"MSF513DB1C PDC BIT,1.5 DEG AIM MOTOR, IMPULSE MWD,ADN4 AND HYDRALIC JARS 8/27/2010 00:00 - 04:00 4.00 DRILL P ■ PROD1 RIH WITH 6-1/8"PRODUCTION BHA#8 FROM 232'TO 8500'MD. SHALLOW HOLE TEST MWD AT 1163'MD,230 GPM AND 750 PSI 04:00 - 04:30 0.50 DRILL P PROD1 SLIP AND CUT 143'OF DRILLING LINE 04:30 - 05:00 0.50 DRILL P . PROD1 CONTINUE TO RIH FROM 8500'MD TO 9294' MD 05:00 - 12:00 7.00 DRILL P PROD1 DRILL FROM 9294'TO 9399'MD -250 GPM,1823 PSI ON,1615 PSI OFF -50 RPM,4K TQ ON,1.5K TQ OFF -8K WOB -170K PUW,150 SOW,150K RTW ADT=3.49,AST=3.44,ART=0.05 HRS SLOW PUMP RATES TAKEN 12:00 - 00:00 12.00 DRILL P PROD1 DRILL FROM 9399'TO 9600'MD -250 GPM,1720 PSI ON,1640 PSI OFF -50 RPM,4K TQ ON,2K TQ OFF -10K WOB -170K PUW,150 SOW,150K RTW ADT=7.59,AST=6.8,ART=.79 HRS SLOW PUMP RATES TAKEN 8/28/2010 00:00 - 06:00 6.00 DRILL P PROD1 DRILL FROM 9600'TO 9843'MD -250 GPM,1720 PSI ON,1640 PSI OFF -50 RPM,4K TQ ON,2K TQ OFF -10K WOB -170K PUW,150 SOW,150K RTW 06:00 - 12:00 6.00 DRILL P PROD1 DRILL FROM 9483'MD TO 10229'MD -250 GPM,2190 PSI ON,1895 PSI OFF -80 RPM,5.5K TQ ON,3.5K TQ OFF -12KWOB • -175K PUW,145K SOW,150K RTW ADT=7.84,AST=3.43,ART=4.41 HRS SLOW PUMP RATES TAKEN 12:00 - 00:00 12.00 DRILL P PROD1 DRILL FROM 10229'TO 10635'MD. GEO-STEERING TO STAY IN ZONE -250 GPM,2210 PSI ON,1910 PSI OFF -80 RPM,5K TQ ON,3K TQ OFF -14K WOB -175K PUW,147K SOW,150K RTW ADT=8.56,AST=2.77,ART=5.79 HRS SLOW PUMP RATES TAKEN 8/29/2010 00:00 - 06:00 6.00 DRILL P PROD1 DRILL FROM 10635'TO 10825'MD. GEO-STEERING TO STAY IN ZONE -250 GPM,2210 PSI ON,1910 PSI OFF -80 RPM,5K TQ ON,3K TQ OFF -14KWOB -175K PUW,147K SOW,150K RTW SLOW PUMP RATES TAKEN Printed 9/20/2010 4:19:20PM North America -ALASKA- BP Page 14 of 14 Operation Summary Report Common Well Name:05-31 AFE No Event Type:RE-ENTER-ONSHORE(RON) Start Date: 8/14/2010 End Date: X3-00VWC-C(3,600,422.00) Project:Prudhoe Bay Site:PB DS 05 Rig Name/No.:NABORS 7ES Spud Date/Time: Rig Release:9/2/2010 Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:05-31 @71.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 06:00 - 10:00 4.00 DRILL P PROD1 DRILL FROM 10825'TO 11015'MD. -250 GPM,2290 PSI ON,2005 PSI OFF 1/ -80 RPM,4K TQ ON,5.5K TQ OFF �� -15KWOB -175K PUW,140K SOW,148K RTW 10:00 - 21:00 11.00 DRILL P PROD1 BACK REAM,MONITOR WELL-STATIC,MAD PASS FROM 11015'TO 9,000'MD -525 FPH,250 GPM,1950 PSI -60 RPM,3K TQ,148K RTW -TIGHT AND PACKING OFF AT NUMEROUS LOCATIONS-HAD TO WORK THROUGH THESE SPOTS SLOWLY WITH LOWER PUMP RATES UNTIL THEY CLEANED UP. 21:00 - 22:30 1.50 DRILL P PROD1 CONTINUE BACK REAMING TO SHOE @ 8505' 22:30 - 23:30 1.00 DRILL P PROD1 CBU AT 250 GPM AND 100 RPM. 23:30 - 00:00 0.50 DRILL P PROD1 RIH TO 9,446'. 8/30/2010 00:00 - 01:00 1.00 DRILL P PROD1 RIH TO 10,876'.COULD NOT WORK THROUGH. 01:00 - 02:30 1.50 DRILL P PROD1 ATTEMPT TO ORIENT TO HIGH SIDE HAVING TOOL PROBLEMS.ATTEMPT TO WORK THROUGH-STALLING AND TRYING TO PACK OFF. REAM THROUGH TIGHT HOLE TO BOTTOM AT 11,015'. 02:30 - 04:30 2.00 DRILL P PROD1 CIRCULATE 50 BBL HI-VIS WEIGHTED SWEEP.BROUGHT UP LARGE AMOUNT OF CUTTINGS WITH SHALE BEING PREDOMINATE. 04:30 - 09:00 4.50 DRILL P PROD1 POH ON ELEVATORS FROM 11015'TO 233' MD. MONITOR WELL AT SHOE-STATIC PUMP DRY JOB,DROP 2.25"RABBIT 09:00 - 11:00 2.00 DRILL P PROD1 PJSM,LAY DOWN BHA#8 CLEAN AND CLEAR RIG FLOOR Printed 9/20/2010 4:19:19PM North America -ALASKA- BP Page 1 of 4 Operation Summary Report Common Well Name:05-31 AFE No Event Type:COM-ONSHORE(CON) Start Date: 8/30/2010 End Date: 9/2/2010 X3-00VWC-C(1,606,855.00) Project:Prudhoe Bay Site: PB DS 05 Rig Name/No.:NABORS 7ES Spud Date/Time: Rig Release:9/2/2010 Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:05-31 @71.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) it 8/30/2010 11:00 - 12:00 1.00 CASING P RUNPRD PJSM,R/U TO RUN PROD LINER 12:00 - 16:00 4.00 CASING P RUNPRD RUN 62 JOINTS OF 4.5"12.6#, L-80, IBT-M LINER,CENTRALIZED AS PER PROGRAM 16:00 - 17:30 1.50 CASING P RUNPRD M/U BAKER FLEX LOCK HANGER AND ZXPN LINER TOP PACKER ASSY.WITH HRD-E RUNNING TOOL. CIRC 1 V2 X LINER VOLUME (65 BBLS) 17:30 - 22:00 4.50 CASING P RUNPRD RIH W/LINER ON 4"DP, FILLING EVERY TEN STANDS TO 7"SHOE AT 8,505'. 22:00 - 23:30 1.50 CASING P RUNPRD CIRCULATE&CONDITION MUD AT SHOE. STAGE PUMPS UP TO 4 BPM. 23:30 - 00:00 0.50 CASING P RUNPRD RIH WITH LINER INTO OPEN HOLE TO 9,301'. 8/31/2010 00:00 - 02:00 2.00 CASING P RUNPRD CONTINUE RIH WITH 4.5"LINER.WORKED THROUGH TIGHT HOLE FROM 10,850'TO 10,993'.M/U TD HEAD&SINGLE. 02:00 - 03:15 1.25 CASING P RUNPRD BREAK CIRCULATION,STAGE PUMPS UP TO 4 BPM WHILE RECIPROCATING PIPE 15 FT. CONTINUALLY TRYING TO PACK-OFF. STOPPED RECIPROCATION AND PACK-OFF PROBLEMS LESSENED CONSIDERABLY. ATTEMPTED TO RECIPROCATE AGAIN AFTER BOTTOMS UP WITH SAME PACK-OFF PROBLEMS. 03:15 - 04:30 1.25 CEMT P RUNPRD CEMENT AS PER PROGRAM: -PUMP 5 BBLS 12 PPG MUD PUSH -TEST LINES TO 4500 PSI. -PUMP 20 BBLS MUD PUSH -PUMP 68 BBLS 15.8 PPG CLASS'G'CEMENT W/GAS-BLOCK,326 SACKS,YIELD 1.17 FT3/SK -SWITCH TO RIG PUMPS AND DISPLACE WITH 50 BBL PERF PILL&79 BBLS OF MUD. -LATCHED UPON STROKES AND CONTINUED PUMPING TO BUMP PLUG. -GOOD LIFT SEEN WITH CEMENT AROUND CORNER. 04:30 - 05:00 0.50 CASING P RUNPRD LINER IN POSITION-TOOK PRESSURE RIGHT UP T04450 PSI TO SET HANGER. CHECK FLOATS,SET PACKER&CONFIRMED WITH ROTATION,PRESSURED UP TO 1000 PSI AND PULLED OUT OF SLEEVE INITIATING CIRCULATION 05:00 - 06:00 1.00 CEMT P RUNPRD CIRCULATE WELL CLEAN WITH MUD- ESTIMATE 26 BBLS CEMENT TO SURFACE. 06:00 - 07:00 1.00 CLEAN P CLEAN MONITOR WELL-STATIC DISPLACE WELL TO 8.5 PPG BRINE MONITOR WELL,STATIC CLEAN SHAKER BED AND TROUGH 07:00 - 09:00 2.00 CASING P RUNPRD POH FROM 8356'TO 2590' 09:00 - 11:00 2.00 CASING P RUNPRD LAY DOWN DRILL PIPE FROM 2590',LAY DOWN PUPS,XO, LINER RUNNING TOOL, BAKER CONFIRMED DOG SUB SHEARED, CLEAN AND CLEAR FLOOR 11:00 - 13:30 2.50 PERFOB P OTHCMP RU TO RUN PERF GUNS, LOAD GUNS INTO PIPE SHED Printed 9/20/2010 4:19:56PM North America -ALASKA- BP Page 2 of 4 Operation Summary Report Common Well Name:05-31 AFE No Event Type:COM-ONSHORE(CON) Start Date:8/30/2010 End Date:9/2/2010 'X3-00VWC-C(1,606,855.00) Project:Prudhoe Bay Site:PB DS 05 Rig Name/No.:NABORS 7ES Spud Date/Time: Rig Release:9/2/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum:05-31 @71.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 13:30 - 15:00 1.50 PERFOB P OTHCMP RUN 2-7/8",2906, PJ HMX PERF GUNS . LOADED WITH 6 SPF,60 DEGREE PHA ING AND RANDOM ORIENTATION,FIRING HEAD AND DISCONNECT TO 1262' 15:00 - 23:00 8.00 PERFOB P OTHCMP RIH W/PERF GUNS SPACED OUT W/2 7/8" FOX DP ON 4"DP,TAG PLUGS @ 10,922', P/U 2 FEET AND POSITION GUNS FOR PERFORATING.DEPTHS:10,500'TO 10,920', tAi 9910'TO 10300'AND 9710'TO 9770'-TOTAL 870 FT OF PERFS. 23:00 - 00:00 1.00 PERFOB P OTHCMP PRESSURE TEST 4.5"LINER&LAP.300 PSI LOW FOR 5 MINUTES AND 3500 PSI HIGH FOR 30 MINUTES,CHARTED.LOST 19 PSI IN FIRST 15 MINUTES AND 9 PSI IN SECOND 15 MINUTES-GOOD TEST. 9/1/2010 00:00 - 00:30 0.50 PERFOB P OTHCMP R/D LINER TEST EQUIPMENT 00:30 - 01:30 1.00 PERFOB P OTHCMP PERFORATE AS PER PROGRAM- PERFORATING.DEPTHS:10,500'TO 10,920', 9910'TO 10300'AND 9710'TO 9770'-TOTAL 870 FT OF PERFS.2 BBL INITIAL LOSS THEN STABLE 01:30 - 02:00 0.50 PERFOB P -_ OTHCMP POH TO 9,673'-ABOVE TOP PERF. DISPLACEMENT CORRECT. 02:00 - 02:30 0.50 PERFOB P - OTHCMP CBU,MONITOR WELL,WELL BORE STABLE. 8.5 PPG BRINE IN AND OUT 02:30 - 08:00 5.50 PERFOB P OTHCMP POH UD 4"DRILL PIPE 08:00 - 09:30 1.50 PERFOB P ■ OTHCMP SLIP&CUT DRILLING LINE 86 FT.,SERVICE TOP DRIVE,CROWN,BLOCKS,DRAWWORKS &ADJUST BRAKES 09:30 - 16:00 6.50 PERFOB P OTHCMP POH UD ALL DP AND PERF GUNS-ALL FIRED. 16:00 - 17:00 1.00 PERFOB P ®_ OTHCMP R/D PERF GUN HANDLING EQUIPMENT, CLEAR FLOOR,PULL WEAR BUSHING 17:00 - 19:00 2.00 RUNCOM P -_ RUNCMP FUNCTION BLIND RAMS,R/U TO RUN 4.5" CHROME COMPLETI•N 19:00 - 00:00 5.00 RUNCOM P -_ RUNCMP RUN 4.5", 12.6#,13Cr85,VAM TOP COMPLETION 9/2/2010 00:00 - 03:00 3.00 RUNCOM P -_ RUNCMP CONTINUE RUNNING 4.5"CHROME COMPLETION,126 JOINTS RUN. 03:00 - 04:15 1.25 RUNCOM N WAIT RUNCMP NORDIC 2 MOVING ONTO DS-5 NO INGRESS NOR EGRESS WHILE RIG MOVING ON ACCESS RD.SHUT DOWN OPERATION FOR SAFETY CONCERNS.CREW WATCHED NEW 70 MINUTE SAFETY VIDEO ON SPILL CHAMPION ROLES&RESPONSIBILITIES. 04:15 - 08:00 3.75 RUNCOM P ■ RUNCMP CONTINUE RUNNING 4.5"CHROME COMPLETION AS PER TALLY. -193 JOINTS TOTAL PLUS JEWELRY 08:00 - 09:00 1.00 RUNCOM P RUNCMP SPACEOUT AND LAND 4 1/2"12.6#VAM TOP CHROME COMPLETION AT 8362'MD 5.88'SWALLOW IN TBR - TOP OF TBR AT 8356'MD MU HANGER AND LANDING JOINT,LAND HANGER AND RUN IN LOCK DOWN SCREWS, TORQUE LDS TO 450 FT-LBS Printed 9/20/2010 4:19:56PM North America -ALASKA- BP Page 3 of 4 Operation Summary Report Common Well Name: 05-31 AFE No Event Type:COM-ONSHORE(CON) Start Date:8/30/2010 End Date:9/2/2010 X3-00VWC-C(1,606,855.00) Project: Prudhoe Bay Site: PB DS 05 Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: 9/2/2010 Rig Contractor NABORS ALASKA DRILLING INC. UWI: Active Datum: 05-31 @71.00ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 09:00 - 11:00 2.00 RUNCOM P RUNCMP REVERSE CIRCULATE CLEAN BRINE AND SPOT CORROSION INHIBITED BRINE BETWEEN SHEAR VALVE AT 3516'AND PRODUCTION PACKER AT 8242'MD PUMP 54 BBLS OF CLEAN SEAWATER FOLLOWED BY 164 BBLS OF INHIBITED BRINE AND CHASED WITH 64 BBLS OF CLEAN SEAWATER 3 BPM-200 PSI 11:00 - 13:00 2.00 RUNCOM P RUNCMP PRESSURE TEST TUBING AND IA -DROP 1.87"BALL AND ROD -PT TUBING TO 3500 PSI FOR 30 MINUTES (GOOD TEST), FIRST 15 MINUTES LOST 49 PSI,SECOND 15 MINUTES LOST 27 PSI, TOTAL LOST FOR 30 MINUTES=76 PSI -BLEED TO 1500 PSI ON TUBING / -PT IA TO 3500 PSI FOR 30 MINUTES,(GOOD ✓ TEST) FIRST 15 LOST 30 PSI,SECOND 15 MINUTES LOST ZERO PSI, TOTAL PRESSURE LOST 30 PSI, -BLEED TO ZERO ON BOTH TUBING AND IA PRESSURE UP ON IA AND BURST SHEAR VALVE AT 3516'MD,SHEARED AT 2600 PSI -PUMP 5 BBLS BOTH WAYS TO VERIFY CLEAN SHEAR 13:00 - 14:00 1.00 BOPSUR P WHDTRE SET TWC AND TEST -DRY ROD TWC -PRESSURE TEST FROM BELOW,250 PSI FOR MINUTES,1000 PSI HIGH FOR 5 MINUTES (GOOD TEST) BLOW DOWN LINES AND DRAIN STACK 14:00 - 15:30 1.50 BOPSUR P WHDTRE NIPPLE DOWN BOP STACK AND SET BACK ON PEDESTAL AND SECURE FOR RIG MOVE 15:30 - 17:30 2.00 WHSUR P WHDTRE NIPPLE UP 11 " 5K ADAPTOR AND 4 1/8"5K XMAS TREE 17:30 - 19:00 1.50 WHSUR N SFAL WHDTRE PRESSURE TEST ADAPTOR TO 5000 PSI FOR 30 MINUTES, -CHART TEST WITH DIGITAL RECORDER, RECORDER FAILED 19:00 - 20:00 1.00 WHSUR P WHDTRE PRESSURE TEST ADAPTOR AND VOID TO 5000 PSI FOR 30 MINUTES, -CHART TEST WITH CHART RECORDER, GOOD TEST 20:00 - 21:00 1.00 WHSUR P WHDTRE TEST TREE TO 5000 PSI FOR 30 MINUTES WITH DIESEL -CHART RECORD TEST (GOOD TEST) 21:00 - 22:00 1.00 WHSUR P WHDTRE PULL TWC -PICK UP DSM LUBRICATOR AND TEST TO 250 PSI LOW AND 3500 PSI HIGH FOR 5 MINUTES PER TEST, CHART RECORD TEST -DSM PULLED TWC WITHOUT ISSUES 22:00 - 23:00 1.00 WHSUR P WHDTRE FREEZE PROTECTED TO 2200'TVD -RIG UP LITTLE RED, PT LINES TO 3500 PSI, PUMP 75 BBLS OF 80°DIESEL DOWN IA AT 3 BPM/550 PSI -U-TUBE DIESEL FREEZE PROTECT Printed 9/20/2010 4:19:56PM North America -ALASKA- BP Page 4 of 4 Operation Summary Report Common Well Name: 05-31 AFE No Event Type:COM-ONSHORE(CON) Start Date:8/30/2010 End Date: 9/2/2010 X3-00VWC-C(1,606,855.00) Project:Prudhoe Bay Site:PB DS 05 Rig Name/No.:NABORS 7ES Spud Date/Time: Rig Release:9/2/2010 Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:05-31 @71.00ft(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 WHDTRE SET BPV AND PRESSURE TEST -PICK DSM LUBRICATOR AND TEST TO 250 PSI (LOW)FOR MINUTES AND 3500 PSI(HIGH) -CHART RECORD PRESSURE TEST -DSM INSTALL"H"TYPE PROFILE BPV -RIG UP LRS AND TEST FROM BELOW TO 1000 PSI FOR 10 MINUTES,GOOD TEST -RD LRS -SECURE WELL ***RELEASE RIG FROM DS 5-31 B AT 23:59 HRS ON 9-2-2010 • Printed 9/20/2010 4.19:56PM C rmmNLOO 42822 2 8 2 2 O m m-m rm 22222 rn n 0 0 ,-.,-2, G W 2 0 0 23 ,. d d d d N ...mm m r n r r r n n r r r m m m m m m m m m m m m m 0 0 0 0 0- E« ,7-7,n7-1 mmmmm 7.31 Q3 d Nmin o NNNNNd N Nm NNNNN22222 J O O O MU UM, UM Q 0 O O O O UM . 44444 N ONO N 44444 O m m m W 44444 4 4 W O m 44444 d 4 4 Q O d o m irH mN Nm mrn rnP mmOrn)S O 00000 80000 OS 322 "q2'-' 'O X0)0)0)0)0) NNm 0) nn n m �Nn Lmo m m N m m m Lo m m r r n r n n n r r r r r n n r n r n n`n n n MI MU �r�pprnrr nrLLnppnLnLpp cncpprrrr rnnn�n�pp LLnppn n��nppn nnnrn J LNON NNN NLNO LNp LNON LO LNO(NON tNO N NN N m ,O NLNO NLNO ,ND INO N,NON N cNO LNO mN N tNpN,NO LNO N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 00000 O O O O O O O O O O 00000 0 0 0 0 0 00200 0 0 0 0 0 00000 • O^m m(N P N N 23.'222 8 8 2 2'6;223 N m 0 0m m 0 m 0 m r n N r N n m m 2t322,7 •_Roi m1 o(P 61667 66666 IU LO 4i(OO O 0000 m W OD N 41 0p W(O aoO Om(O OJm • 88888 88888 88888 88888 88888 88888 88888 8888`0 w nrnnn nrnrr rrrrr rnrrn nnnn rrrrr rrrrn nrnnn (00000 00000 m 00000 000 rn 0 00000 00000 00000 �o LO LOm� ,n DLO CO Lp 00000 LommNlO mLO mLOm 00000 O•^d d m O N d m r m 0 -[')Nrm 223r",,2 y n ON mrnNNm N dnmN C�VNyN VNy ONp ONy LO')cV')ONNN NNNt')V dd cdQ d VdQ d 1pmm n n n mm ym mrn Vrny 00p10 O 0 0 0 0 O O O O O N 0 N N 0 O O 8 O N n o n on N N N 8 O 8 8 o O 8 n O ..-6.-,m m m m ',3-,m;;0 0 0 m 0 rn rn 0 0 0 0 0 0 0 0 m m rn Z d d d d d Q Q Q Q Q d N V 0 0 0 0 0 0 d d d d Q Q d O 0 d 0 999(09 N NNNNN N,m()NN N NN NN�Vrnp) NN ONg�Np ,rn!),IL N NH, N N NN N,(rn) 0000)0) J 6SSNm�N') N ON NN m0,-m0 0 000 00,-O1- SO.S-0S OO7Om --O,- 0 0 0 0-0 6 0 0 0 0 0 0 0 0 0 0 O O O O o 0 0 0 0 0 O O O O O 0 0 0 0 0 0 0 0 0 0 C. 3 S S 0 0 0 22322 7,N N 2.7:74';' V O O O N N N N 8,%81",6,2 r r P.m m 03 00900 00000 00000 00000 00000 00000 00000 00000 CD • C. • Ca • m O N m n 0 0- 2271`2.t m O N d m n rn m 244t;8 m 0 N N O N N r 0 _ Z X„00000 000-- NNN N N N 8c') 00000 r r r nm 0 0 6 6 0 00000 00000 00000 00000 00000 0 0 0 0 0 00000 • ® J ^ 6 _,_, m N CA 2'2 0 O g"88000 dmNNS L�Ocr')N V V V R V N ,Snm,N2.,; mNPr Ire 03202 0004; m • 0 0 C N 0 • 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9 Em°.1-$ t0 ^° L,5"§. �1 ON 5 y U c no oo LN'l Lo 0 m o L o -o om o ° f N O¢NN N O¢o F O N h 2288222 d-mN rNO 22;;24 d 440 1,N N mrn N m n d n m mmNm- 00 t7n3 ? 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(C.d Od Nd N OmO O O 2 r ^O N N a,%n m O N N 0)2 O -t' d m m mmm m mm mm 0) mmm N NNN ' MM.MM NNNNN N N N N N NNNNN N NNN N NNNNN N NNN N 3 O 6 E E p U 2442 °O n� (4 i°8'o mmm"R 1'39 NONN8 mmnNBo �Noom mrnmmN m'8' E c{?,'m;c7;, n• °Jn��n °Nr$� N82288 N TT,` N NNN FA N�Np�Np NcNtpp �p �p�p �p�p�p 88888 O OO tVp �OOcpp�ccNpp�Nccpp cRRcpp p Op cVp �Op tRp �vp pp yy�OONpp p 0 88.2288 0 0 0 0 0 O O O O O O O O O O O O O O O 0 0 0 0 0 O O O O O O O O O O O O O 0 0 0 0 0 m 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Sr 0 V O 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 a 44444 44404 44444 44444 4v 444 44444 44444 44444 44444 44444 44444 44444 D°.. co«_ r P N O1 r4 Nr C 00 N oN N Ntn(17 r NN Oa0 7)2NOO Nc 0 rt c4. m W r r rO�myyN N Nt'I NO o mmOOO Or O N O OO)N n N nyVyV cO N ; O O O0 ONN mN NNO NN NN N h NNOO `<t'9 N N N N n O n O 0n n N �n 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 N n N n n N N n n N 00000 0 0 0 0 0 0 0 0 0 0 000P.2. 0 0 0 0 0 •mC'N^r^„ 0 N Ap N O 0 m m O N r 4 O N m O ON O r O N N N N 2 0 0 N N n(O N 3 m N N N O m N O m m N N N m N m O M n N •^^ NN N N N N N NN NN N N m N N 00 O N N O N N N N N N 0 0 t0 ON ON(■ n N r NOO6 O N N N N N N N N N N N N N N N N N N 0 0 O N N N N N N N N N N N N N N N 0 0 NN 0 0 0 0 0 O O O O O O O O O O O O O O O 0 0 0 0 0 O O O O O 0 0 0 O O O O O O O O O O O O O O O O O O O 0 0 0 n n n n n n n O m 8 n n n n n n n n n m n 8 n n n n n n n n n n n n n 8 r(0N r N n n n n n r 0N n n n n n n n n n n 80 0 0 0 0 CO O000(0 (0 CO N0(0 (00 Nm (13 (00 (0 0(00 000(0(0 00(00(0 ((0(000 0000 0• (0000 00( (. m N; 0 8 088N V N O 888<(N7 8.8 X8.8 W c7'.c'7 8. 488.°28 Omi OO 88 8?.c7?N 888 n7 82 2 mN 11,,r111 Z� 0O N m00 N 0m 0 N 00 N 0 m 0 N 0 0.0 0 o0 N N0�N0 mN Nm0 N 1,1111 N 0mN 0m 0 N 00 N 00 mN 0 0 m N m 0m °o 0 umi°o 0 umi m°o 0 n°o 0 mui°o m N °o 0 N°o0 m N g�0 g 0 N°o 0 linz! mN m t°m�mN m m a rnN 4 mcm 0 m p m N m 0 m N N N N (3 O Q n c O O N N O N N O N O O O 0 0 n 0 m O O O O O 4 4 r O N N O .N O n N N N 0 0 N 6 N n 8 0000o 00000 00000 6 0000 0 0 0 d o 6 0000 0 0 000 00000 O 000O 00000 00 000 00420 f N N O N N O N N m N NOO W N O N m O O N NO 4 N N O N o m 4 O O 3 N O N R.W ON N O n O O NN O N r N 0)2 3 NN N N N N N NN9 N N mNONm 0(00(00 0 0 0 0< 4 6 N NN Yl 6 6 6 OOOr r r N n N Ih n OOOO OOOmm v23 000010(0 O NOnm NmO m NNNNN 8 O]N OmI 8:2 NO4 4 N tNOn W mN4N 8 4(2 go'g 001 O4 N2 V Om123.O OOI O NNNN 00000 00000 OO NN NNN NN NN N NfJ f�C�tl t7 O'1 t7 c7 t') t?O O V C O?V?V' O NNYI N (V Ob er 0444 N N O N N O 2 8.2 O N4 m N N N N O O 0 n N O NOO O O 2,N m r 4 m m N m 4N O O t7 N m m NNNN N NNN NN NNMN 7 NNONO 00 4 4 Q O 8 O t0 0 D r: n r t`r O 6 6 6 0 6 (0(0(0(0(0 (00 0 00 9 U 0 0.0 N m O N .N O N r m CO N O W O N O. 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Mn m m m mm N 2 N 20 0 O 7N 2N O N�m�N N m N N N N N N N O 2 N 2 O 2` F2.22:1.2 Nmm EN 88382 2:238,z 24N88 2Q882 242n8 rPNP28,70 2E180 P2'P2'.=307,mN N n NNM 2 28 MEn MME Nm 22E a LZH m mm d.^. :=8;:r204.7_n ;N m=; 2882:2 2 r m m; N N m;.- O m O N m ;n m O�m m,n N d m N N4'L" OO LH 0 �mmm O 20 m m VMS A36"a N MdQ NmO N N N N N N N N N N N N N N N N N N N N N N N N N N 4 _w (8 28171 22082 82420 0 rm0:2N '8'4' 82 m OON8 N NOQ 8r,:328 -T2882 Nt0002 84T82 m N LH m m n d 20 O mSN m O 2 0 Ol Om^ h 02n FN N H N N N N N N N 2 N N N N m N N N d N rN M N NN O LN NH N U m HEm N N N N N N N N NNN N y% WN` N N:er 2882:2 m Nm00 282;8 28220r;N N N N p:N 8N 2N 8 N 2N 2N 0N 2 N N ON m 2 NN N m N N rN mP 2a N N Q m r O O N m 0 20 m 0 0 m n N m 0 N d pN N N O O m N 2 91 N m 6 a p v ~ 2 2 0 0)n 2 m O Nr N O^n O .7 2888'0; N m N m N 21:888 O 00 00 m P 222:1'8 m 8 n R; N 2 m O 8 82722 m m t 8 O r 07m2 0 0 02" 82 I° 2082^ °'2800 077.00 000 00000 N 7000) BmEmE 22 m 2r r mr mmmm 22222 m mmm m 2 2 222 2 2 2 2 2 2222 2 mm m m m m m m m m m mm m m mmmmm ul mrn8m n�27 vet CQ��B (,244 2 mEmmtn BOEvm numoumN 801222 Gc 70'8 v n o8 rnBN� 0mum)°ud)L8o V4- m n m � Inn Wag 220 c7 m;N m N mOO m;N rN 2mO NL') �t0 Q LM L7N NO O)mr 202 22Ih n n n n mmO) m O��N IOp OI Lppny �7i ag (54x8" 2roon Em ENEEm mmmmm EEEEE EEEEE mmmmm mmmmm mmmmm mEEEE m Nmm m m N m N m m mmm m m mmm m E` '482P2 m m m Q m 2 r r m m m m N N tp l0 7 2 N N 2 2 N 20 m m V O N r N tD 20 NO m N N m N r m n N r 2 n n n n N n I�r[p L 7 mN N m N N0 N m 2 N N N m m N N N m N m N p N N N N N m m m N N N m m m m m r N NNN N 2C = °O O m N m O m 2 2 0 r N O O r m m N O O 8,m N 20 0 r; N N m 2 N [..'53R-c22 m O O O 8 2 2;2 2; 0 2 I2 2 2 2 m m 7 4 2 4 0 m^m 2 2 n 2 n m r O m 8 2 2 net Nmm m m mmm m 2 8 8 32 2222 8 8 2 2 2 E 2 2 2 2 2 OE P"mOr r mO mN o.T m2P n mmEm NLmNNO 22428 28,7,8<:-, '48282 mW Q O N NNNmP 20E E LU Ha mm mmm Hin 282 MI MN 002 228 a E E 0 U O^ M m N N t O N m m ,00.00D.m N m 1-- Vy 0 0 2. 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O r m M O 28288 r 2 m N M M Q Q LIN N�- Mi:I rs E NmmN 2 N N n r^m m m m 8 8 0 0 0 N N N N N N N N N N N N N N M t7 M > 5000) 5 000773000 ‘.1,) 0 0 0 AA Zr M888g 0$228 88v88 n0 0 ;,mmmm x,,,,3a vo _ ri of vim0 ON 0 h0 t MM(7 t') 800 NN MQ QNN W 2 !0 r d ON NN NN V01m 2 mmm m m mmm m m mmm m m m m 0 0 0 0 ry wH Fe m m m m n M O N o m 2 28828 N N 2 8!h 280 80(V N W pj; 6 Q O(`�2 mNN WN Qm�Qn (ryQ g U N n N r 2 2 2 2 8882 O O M M M N N 9 F ❑",. m MMr Nc0 c0 0CpwN m bN OO _mow„ .007,4:�- •-M Q W t0 O r c0,D cr. p Q N O CJ p M m N N m N A'V r 0 n r W 8 C g 2 N M 0 O M M M N M N M M M M AA L N 222 i q F O O D 0= MQ 022 MM 00000 _ �, OZ¢¢ n 0ONM O ...,-.m Nm m b') F �1 W f 3 N v &-,10-6:2g R N O N c O G O M Q 8 p U N Q 8 C � W rOM2m NNm.-' 00 2 8 8 8 8 0 0 0 N N p U' + +0 0 NNN NN NN N NN 282‘7,c73 MM ,.. oiNV33 0 J (n ml 9 ml ml J RE. .r g.°228, 828,72 m m m O O 8 8 O N V m 8m 8 2?m N m m m°,1,. m CA 88228 22222 88882 2 8 `p C O E Z1 y v 0 ON m'[m') mNm NN v 0N)O m pr)0) NC') N O ❑ vNC-L moi crinoj aj^noj tv,g w � Nmco cornrn nn m m2 m w � 1- 2N mmm 2 2 m m 2 m op 2 2 2 8 W m 2 2 2 2 W W mmm m a0 2 2 2 2 2 m ry K U 9 N • m O ¢ N A E g` o r o T M g 2 n o n Q r 2 2 g e m o c v H 000i 0 00ajpj o n naooi - ^ E 2 o o p m N 2 2 n m 2 m W n n r 1■ r r r Kr _¢ E N N N N N N NNN N N NNN N N N Q c c c c C �? N 8 N r o 'N O N owww m . 8 o f Q Q QQQ n J~ a eC w a ❑ w R a t w 2 z w u y « ' ❑ a - H c c m m m 2 m N N N 2 8 NN M 7 M t7 M O O o U N N WgN M42 22282 h m 8 N 2 Q > E p W N8 _ 2 J .c t,2 m C ❑ > u o n t — - 0 AN m ❑^� 88 M:Q-m m m 888 O N Omm pp p g O p 8 6g= p OO N Om t7N0m mOm,L5Q N ❑ O u Y im y 88888 §8r88 , §8828 00 P,°gg° go E E m J Y N a ECOV p spp 6 `oNO.,,.. IL )n C N Q r Q RAAA E ❑ O o `c w`o. `4 T T N 0 E N_ > > H U o (0(0 TREE= CIW SAFI TOTES: WELL ANGLE>70°@ 9221'. WELLHEAD= FMC ***4-1,L CHROME TBG&NIPPLES***ORIG WELL ACTUATOR= BAKER C D 0 5-31 B &05-31A NOT SHOWN*** KB. ELEV = 71' , BF.ELEV= N/A I - KOP= 4100' Max Angle= 95°@ 10914' I I 2202' H4-1/2"HES X NIP, ID=3.813" I Datum MD= 9203' Datum TV D= 8800'SS GAS LIFT MANDRELS Minimum ID = 3.725" @ 8350' ST MD TVD DEV TYPE VLV LTCH PORT DATE 4 3516 3515 6 KBG2 DOME BEK' 16 09/11/10 4-1/2" HES XN NIPPLE 3 5212 5187 18 KBG2 SO BK r 20 09/11/10 2 6486 6397 17 KBG2 DMY BK ' 0 09/02/10 1 7309 7184 17 KBG2 DMY BK ' 0 09/02/10 IHIPSTOCK(02/1 7/101? H 3333' I MiL.I..OUT WINDOW (05-31B) 3334'-3351' J F„B-csc 36 ID r u21° H 3499' ' , 8214' H4-1/2"HES X NIP, ID=3.813" I R 8243' I-7"X 4-1/2"HES TNT PKR, PERFORATION SUMMARY ID=3.856" REF LOG: SWS AZ DENSITY NEUTRON 08/30/10 ANGLE AT TOP PERF: 91°@ 9710' Note: Refer to Production DB for historical perf data SIZE SPF INTERVAL Opn/Sqz DATE I I 8279' H4-1/2"HES X NIP, ID=3.813" I 2.88 6 9710-9770 0 09/01/10 2.88 6 9910- 10300 0 09/01/10 2.88 6 10500- 10920 0 09/01/10 ' ' 8350' I-14-1/2"HES XN NIP, ID=3.725" I 8356' I--{7"X 5"HRD-E ZXPN LTP w/BKR FLEXLOCK LNR HGR, ID=4.190" 4-1/2"TBG, 12.64, 13CR-85 VAM TOP, . H 8362' I _1� 8362' -i4-1/2"WLEG, ID=3.958" I .0152 bpf, ID=3.958" T 8382' 1-15"X 4-1/2"XO, ID=3.880" I 7"CSG,264, L-80 TCII, ID=6.276" H 8505' I A ■ PBTD --I 10924' I .0011 1'.Y.W1 4-1/2"LNR, 12.64, L-80 IBMT, .0152 bpf, ID=3.958" H 11013' 444•41 DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 07/01/91 ORIGINAL COMPLETION WELL: 05-31B 11/10/98 CTD SIDETRACK(05-31A) PERMIT No:r2100850 09/02/10 N7ES CTD SIDETRACK(05-31B) API No: 50-029-22159-02-00 09/05/10 SV DRLG HO CORRECTIONS i Sec.32,T11 N,R15E, 1737'FNL&5279'FEL 09/16/10 ?/JMD DRLG DRAFT CORRECTIONS BP Exploration(Alaska) ` ^ Data Analyzer Query Results Query Name: LOT!FIT Fixed Field Data by Weilbore Comm.WB Surface Name Date LOT/FIT MW(ppg) TVD(ft) TMD(ft) Press(psi) BHP(psi) EMW(ppg) 05-31B 018/2010 LOT i 10.20 3,358.93 3,358.93 548.0 2.321.0 13.34 05'31B �2�2O1O FIT 8.60 8.33421 8.512�98 O49�O 4.3V8�8 1U1U 4. 05-31B i i | U�OOi i i U.Oi 0.00 10/7/2010 11:24 Page 1 of 1 sL-InTE IF ELAsEA 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 05-31B BP Exploration (Alaska), Inc. Permit No: 210-085 Surface Location: 1737' FNL, 5279' FEL, Sec. 32, T11 N, R15E, UM Bottomhole Location: 786' FNL, 3101' FEL, Sec. 31, T11N, R15E, 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. Sincerely, Daniel T. Seamount, Jr. Chair DATED this day of July, 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 R6�.'l.I E I V E I..� ®�5.� ALAS )IL AND GAS CONSERVATION COMM!' )N .�? - PERMIT TO DRILL JUN 2 3 2010 20 AAC 25.005 66 f, 1a.Type of work: lb.Proposed Well Class: _� Al OP �e1(Ts propos o: YP P Development Oil 0 -Winj 0 Zone ❑ Drill ®Redrill ❑ Stratigraphic Test ❑Development Gas ❑Service-Supply ❑Multiple Zone ❑CoalbeeliWii)rIItas Hydrates ❑ Re-Entry ❑ Exploratory ❑Service-WAG ❑Service-Disp ❑Shale Gas 2. Operator Name: 5.Bond: ® Blanket ❑Single Well 11. Well Name and Number: BP Exploration(Alaska)Inc. Bond No. 6194193 PBU 05-31B 3. Address: 6. Proposed Depth: 12.Field/Pool(s): P.O. Box 196612,Anchorage,Alaska 99519-6612 MD 11017' TVD 9024' Prudhoe Bay Field/Prudhoe 4a. Location of Well(Governmental Section): 7. Property Designation(Lease Number): Bay Oil Pool Surface: ADL 028326 1737'FNL, 5279'FEL, SEC.32,T11N, R15E, UM Top of Productive Horizon: 8. Land Use Permit: 13. Approximate Spud Date: 1023'FNL, 1468'FEL, SEC.31,T11N, R15E, UM August 15,2010 Total Depth: 9.Acres in Property: 14.Distance to Nearest Property: 786'FNL,3101'FEL,SEC. 31,T11N, R15E, UM 2560 31,840 4b. Location of Well(State Base Plane Coordinates-NAD 27): 10.KB Elevation above MSL: —63.5' feet 15.Distance to Nearest Well Open Surface: x- 697050 y-5949705 Zone- ASP4 GL Elevation above MSL: 35' feet to Same Pool: 720 16.Deviated Wells: Kickoff Depth: 3505 feet 17.Maximum Anticipated Pressures in psig(see 20 AAC 25.035) Maximum Hole Angle: 86 degrees Downhole: 3203 Surface: 2368 18. Casing Program: Specifications Top-Setting Depth-Bottom Quantity of Cement,c.f.or sacks Hole Casing Weight Grade Coupling Length MD ND _ MD ND (including stage data) : /4" 7" 26# L-80 TC-II 8525' Surface Surface_ 8504' 8330' 184 sx Class'G' '- 6-1/8" 4-1/2" 12.6# L-80 IBT-M 2666' 8350' _ 8199' - 11016' 9023' 324 sx Class'G' 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 ND(ft): Junk(measured): 11081' 888 ' 8797'& 10446' 11045' 8887' None Casing Length Size Cement Volume MD ND , Conductor!Structural 115' 20" 11 cu vds Arcticset I 115' 115' Surface _ 3500' 9-5/8" 75 sx Coldset 1 1.300 sx Class'G' 3500' 3500' Intermediate 9112' 7" 525 sx Class'G' 9112' 8373' Production . Lin-r _ 595' 5" 100 sx Class'G' _ 8812'-9407' 8111'-80$6' , Liner 2271' 2-3/8" 70 sx LARC 8800'- 11071' 8100'-8886' Perforation Depth MD(ft): Below Plug: 9896'-10892' Perforation Depth ND(ft): 8882'-8877' 20.Attachments: ❑ Property Plat ❑ BOP Sketch ®Drilling Program ❑Time vs Depth Plot ❑Shallow Hazard Analysis ❑Diverter Sketch ❑Seabed Report ®Drilling Fluid Program ®20 AAC 25.050 Requirements 21. Verbal Approval: Commission Representative: Date: 22. I hereby certify that the foregoing is true and correct. Contact Abby Warren,564-5480 Printed Name John Egbejimba Title Engineering Team Leader / Prepared By Name/Number Signature / •• . 11'=w- 23/0 Phone 564-5859 Date Terrie Hubble,564-4628 r Commission Use Only Permit To Drill API Number: Permit Apr va Date: See cover letter for Number: /OO,'S 50-029-22159-02-00 1�(/t } other requirements Conditions of Approval: If box is checked,well may not be used to explore for,test,or produce co IbedCm�et/hane,gas hydrates,or gas contained shales:,./[r 35� P S' /-moo P 1 cS f Samples Req'd: lb No Mud Log Req'd: ❑ es 110 No Other: —� P eq'd: ❑Yes X-z Soo �OSG � lb% /e;.#_.6 4-„ S Measures: rla Yes ❑No Directional Survey Req'd: Ite7 Yes ❑No - D e,1 ay c-,c -f-LS-(-- 1 L.PE s t cc y %-& z o Mc z s.z g5CA) / APPROVED BY THE COMMISSION Date �tis>/�r �J ,COMMISSIONER Form 10-401 Revised 07/2009 This permit is valid for 2 months from e date of a p oval(20 AAC 25.005(g)) Submit In Duplicate OR\G\N - 7- ./6 i i�� by 0 To: Alaska Oil & Gas Conservation Commission, Chairperson From:Abby Warren, ODE Date: June 17, 2010 Re: 05-31 B Sidetrack Permit to Drill The sidetrack plan for the 05-31B includes the following: pump cement across the perforations and circulate cement into the IA, the 3-1/2" tubing will be cut -500' below KOP. During rig operations, the tubing will be pulled and the 7" casing will be cut and pulled. A cement plug will be laid in and sidetracked off of. The 8-3/4" hole will be drilled to the Top of the Sag River where a 7" long string to surface will be run. The 7 casing string will be cemented with 1000' of cement. The production hole will be drilled- with a 6-1/8" BHA building to horizontal. The well will then run horizontally through the lvishak formation. The production liner will be 4-1/2" L-80 and fully cemented. Tubing will be 4-1/2" 13Cr, tied into the top of the production liner. Please note the following Well Summary as detailed on the next few pages: 05-31 B Permit to Drill Application Page 1 Planned Well Summary Well 05-31B Well Producer Target Ivishak Type Objective Current API Number: 50-029-22159-01 Current Status 05-31A Shut-In • Estimated Start Date: Aug-15-2010 Time to Complete: 27 Days Surface Northing Easting Offsets TRS Location 5,949,705 697,050 1737' FNL/ 5279' FEL 11N, 15E, 32 Northing Easting TVDss Offsets TRS Target 5,950,380 695,560 -8,835 1023' FNL/ 1468' FEL 11N, 15E,31 Locations BHL 5,950,575 693,920 -8,960 786' FNL/ 3101' FEL 11N, 15E, 31 Planned KOP: 3,505' MD / 3,505' TVD Planned TD: 11,017' MD/ 9,024' TVD Rig: Nabors 7ES . GURT: 35'/28.5' RTE: 63.5' Directional — Schlumberger/Anadrill P5 KOP: 3505' MD Maximum Hole Angle: -17° in the 8-3/4" intermediate section -86° in the 6-1/8" production section Close Approach Wells: One anti-collision risk in this well, 05-30 a TCR will be done on this well . Survey Program: Standard MWD+IIFR+MS Nearest Property Line: 31,840'to Southwest property line Nearest Well within Pool: 720'to 05-11A Contacts Name Phone# E-mail Drilling Engineer Abigail Warren 564-5720 abigail.warren @bp.com Geologist Doug Stoner 564-5652 doug.stoner @bp.com Pad Engineer Alice Kaminski 564-5676 alice.kaminski @bp.com 05-31 B Permit to Drill Application Page 2 • Formation Markers 05-31B (L,ed on SOR) Commercial Hydrocarbo Est. Pore Est. Formation Tops Uncertainty n Bearing Press. Formation (TVDSS) (feet) (Yes/No) (Psi) 3505'MD/-3436' KOP TVDss No SV3 -3521 60' No SV2 -3745 60' No SV1 -4134 60' No UG4 -4712 60' No UG3 -4858 60' No UG1 -5410 60' No WS2 -6074 60' No WS1 -6276 60' No CM3 -6534 60' No CM2 -6954 60' No CM1 -7566 60' No THRZ -7988 30' No BHRZ -8136 30' No TJA -8165 30' No TSGR -8267 20' Yes TSHU -8306 20' Yes TSAD -8360 20' Yes 42SB -8452 20' Yes TCGL -8512 20' Yes BCGL -8574 20' Yes 23SB -8649 20' Yes 22TS -8684 20' Yes 21TS -8730 20' Yes TZ1B -8776 20' Yes PGOC -8800 20' Yes TDF -8818 20' Yes 3206 psi III 05-31 B Permit to Drill Application Page 3 Casing/Tubing Program Hole Csg/ Wt/Ft Grade Conn Burst Collapse Length Top Bottom Size Tbg O.D. (psi) (psi) MD/TVD MD/TVD 8-3/4" 7" 26# L-80 TC-II 7,240 5,410 8,804' Surface ' 8,504'/8,330' 6-1/8" 4'/2" 12.6# L-80 IBTM 8,430 7,500 2,666' 8,350'18,199' 11,016/9,023' Tubing 4 1/2" 12.6# 13Cr-80 Top 8,430 7,500 8,350' Surface 8,350'%8,199' Mud Program Intermediate Mud Properties: LSND I 8-3/4" hole section Depth Interval Density(ppg) PV YP API FL HTHP FL MBT PH KOP-8,742' 10.0-10.4 12 -22 18-28 4-6 <10.0 <20 9 - 10 (KOP to Sag) Production Mud P roperties: FLOPRO SF Reservoir Drill-in Fluid I 6-1/8" hole section Depth Interval Density (ppg) PV YP LSRV API Fl pH MBT 8,525'-10,948 8.4-8.6 6-12 22-28 >20,000 6.0-8.0 9.0-9.5 <3 Logging Program 8-3/4" Intermediate: Sample Catchers-as required by Geology Drilling: Dir/GR . 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: Tail: Volume of open hole+40% excess+ 80'shoe track Tail TOC: -7500' MD Total Cement Spacer 25 bbls of Viscosified Spacer(Mud Push II) Volume: Tail 38 bbls, 212 cuft, 183.5 sks 15.8 lb/gal Class G + adds- 1.16cuft/sk Temp BHST= 176° 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: -8,350' MD (Liner Top, excess will be circulated out) Total Cement Spacer 25 bbls of Viscosified Spacer(Mud Push II) ..- Volume: Lead N/A Tail 68 bbls, 379 cuft, 324 sks 15.8 lb/gal Class G +adds- 1.17cuft/sk Temp BHST= 187° F, BHCT TBD by Schlumberger 05-31 B Permit to Drill Application Page 4 Surface and Anti-Collision Issues Surface Shut-in Wells: There are no wells requiring surface shut-in in order to move onto the well. At surface 05-26 is -60'to the northeast and 05-17 is to the southwest-60'. Close Approach Shut-in Wells: 05-30 fails major risk on the anti-collision report. This well is currently shut in and has a plug set at 9298'which is below the packer. A TCR will be done for this well. Hydrogen Sulfide Recent H2S data from the pad is as follows: Well Name H2S Level Date of g Readin #1 Closest SHL Well H2S Level 05-26A 40 ppm 7/27/2008 #2 Closest SHL Well H2S Level 05-16A 3 ppm 12/16/1999 #1 Closest BHL Well H2S Level 05-05B 0 ppm 2/11/1997 #2 Closest BHL Well H2S Level 05-11A 0 ppm 3/29/1992 Max.Recorded H2S on Pad/Facility 05-16B 50 ppm 8/2/1999 Other Relevant H2S Data (H2S alarms from rigs,etc.) Faults Seismic data indicates one small fault crossing in Zone 4 but it has an expected throw of 5', and lost circulation is not expected 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 05-31B 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 3,037 psi @ 8,345'TVDss(7.0 ppg EMW) Maximum surface pressure 2,202 psi (based upon pressure at TD -0.10 psi/ft gas gradient to surface) Kick tolerance 50 bbls with 11.1 ppg frac gradient, assuming 7.0 ppg reservoir, 4" DP and 10.2 ppg MW Planned BOP test pressure Rams test to 3,500 psi/250 psi. Annular test to 2,500 psi/250 psi 7" Casing 3500 psi surface pressure Integrity Test-8-3/4" hole FIT/LOT after drilling 20'from middle of window 7" Casing The VBRs will be changed to 7" rams to accommodate the 7"casing 05-31 B Permit to Drill Application Page 5 Production Interval Maximum anticipated BHP 3,203 psi @ 8,880'TVDss (7.0 ppg EMW) Maximum surface pressure 2,368 psi (based upon pressure at TD-0.10 psi/ft gas gradient to surface) Kick tolerance Infinite with 8.8 ppg frac gradient, assuming 7.0 ppg reservoir, 4" DP and 8.5 ppg 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 Requests: 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 DS 04 and/or Pad 3 for disposal. Contact the GPB Environmental Advisors (659- 5893)for guidance. 05-31 B Permit to Drill Application Page 6 Drilling,, Hazards and Contincq .ides POST THIS NOTICE IN THE DOGHOUSE I. Well Control A. The Ivishak in this fault block is expected to be 7.0 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. 05-31B has a low risk of LC due to the seismic data which indicates there is one small fault crossing (5 ft throw) III. Kick Tolerance/Integrity Testing A. With the planned mud weights, the kick tolerance for the intermediate section is 50 bbl, 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 EMW(lb/gal) 9-%"window 20-ft minimum from the 9-%"window FIT/LOT 11.1 minimum 7" shoe 20-ft minimum from the 7"shoe FIT/LOT 8.8 minimum 'Gives a 50 bbl kick tolerance assuming a mud weight of 10.2 ppg IV. Hydrogen Sulfide Well Name H2S Level Date of Reading #1 Closest SHL Well H2S Level 05-26A 40 ppm 7/27/2008 #2 Closest SHL Well H2S Level 05-16A 3 ppm 12/16/1999 #1 Closest BHL Well H2S Level 05-05B 0 ppm 2/11/1997 #2 Closest BHL Well H2S Level 05-11A 0 ppm 3/29/1992 Max. Recorded H2S on Pad/Facility 05-16B 50 ppm 8/2/1999 V. Cretaceous Overpressure A. 4EWARE.Zretaceous over pressure has been experienced -5250-5500 TVDss. FS-1 (PWDW1-2A, 1 mile) has perforations in the UG4 and UG3. LPC (LPC-01 and LPC-02, 2 miles) has perforations in the UG1 and has been injecting through the last year. Watch for overpressure at KOP. Ensure that a plan is in place in case the overpressure is more than expected VI.Anti-Collision Issues A. 05-30 fails major risk on the anti-collision report. This well is currently shut in and has a plug set at 9298'which is below the packer. A TCR will be done for this well CONSULT THE DS-05 DATA SHEET AND THE WELL PLAN FOR ADDITIONAL INFORMATION 05-31 B Permit to Drill Application Page 7 Operations Summary Well Status: ✓ PPPOT-T passed 4/20/10 ✓ PPPOT- IC FAILED 4/20/10 ✓ MIT-OA Passed to 2000 psi 4/8/10 ✓ MIT-T Passed to 3000 psi 7/5/2009 Notify the field AOGCC representative with intent to plug and abandon Pre-rig prep work: 1. F LLR TxIA 2. S Pull WRP. Purge Chem Inj Line. 3. F Injectivity Test(Fullbore P&A Prep) 4. F Fullbore P&A Perforations with 17.7 bbls TOC 7700' 17.7 bbls based upon 8.1 bbls in the 2-3/8" liner 9.6 bbls in the 3.5"Tubing 5. S D&T TOC. D&T for Tubing Punch 6. E Gravel Pack RST. Punch Tubing. 7. F Circulate 1000' of cement(27.3 bbls). Final cement top at 7700' MD in IA and TBG. Cement volume based upon 1037'of cement in the 3.5"x 7"annulus 8. S D&T TOC. Drift for Jet Cut 9. E Punch Tubing. Circulate Brine (w/Fullbore).Jet Cut Tubing. 10. W PPPOT-T PPPOT-IC. Function LDS. Rig Operations 1. MI/RU Nabors rig 7ES 2. Pull BPV. Circulate out diesel freeze protection and displace the well to brine. ' 3. Set and test TWC to 1,000 psi from above and a rolling test from below. 4. Hook up OA to a bleeder tank and monitor(since the 7"will be pulled on this well). 5. Nipple down tree & tubing adapter. Nipple up and test BOPE to 3,500psi high/ 250psi low. (NOTE: Install spacer spool above the tubing spool if required to allow the testing of the lower set of rams prior to pulling the tubing) Pull TWC. 6. R/U & pull 3-1"tubing from the cut depth at-4000' MD. 7. PU DP and make bit and scraper run to the top of the stub. 8. RU E-line and RIH w GR/CCL/USIT to 4000'and log to surface. 9. With Eline RIH with 7" EZSV bridge plug on E-line and set at -3775' MD and test to 2500 psi for 30 mins and chart 10. MU 7"casing cutter and RIH to 3775' MD and circulate the well to clean brine 11. Pull casing cutter up to -3575' (-75' below the surface casing shoe) and cut the 7" casing and circulate the annulus to seawater/fresh water. (NOTE: Be prepared for diesel freeze protect coming back during the OA circ-out) 12. Change out to 7" rams, and test rams. 13. BOLDS, RU/MU casing spear assembly, and unseat the 7". With the appropriate down-hole barriers in place, pull the 7"casing from the cut depth 14. RIH with open-ended drillpipe with 9-5/8"scraper spaced out to tag the EZSV. CBU, POOH 15. RIH with open-ended DP and diverter and lay a balanced cement plug from the top of the 7" EZSV at 3775' MD back into the 9-5/8"casing to 3090' (-700' cement plug) NOTE: If the 7"casing cannot be pulled from -75'below the 9-5/8"surface shoe, the 7"casing will be cut just inside the 9-5/8" shoe and a whipstock departure from the 9-5/8" casing will be back up plan for sidetracking this well(will require CIBP at base of 9-5/8"casing to accommodate a casing test) 05-31 B Permit to Drill Application Page 8 F'A 16. RIH w/ 8-3/4" drilling assembly with MWD/GR/DIR/RES/PWD and RIH to the top of the cement kick ,. off plug. 17. Clean-out cement to within 50' of the 9-5/8"surface casing shoe and test the casing to 3000 psi for 30 minutes and chart. 18. Drill out the cement to below the surface casing shoe at 3499' MD and begin sidetracking efforts to sidetrack the well. 19. Drill 20-50'of new formation and perform LOT Test f l.l pro_ • 20. +/-100' above the HRZ, ensure mud is in condition and up to required weight and perform short trips as needed. 21. Drill ahead to the 7" liner point at top of the Sag River, as per the directional plan. Circulate the well clean, short trip to THRZ or higher as needed. POOH. 22. Change out to 7" rams, and test to 250 psi/3,500 psi • 23. MU and run 7", 26#, L-80, VAM-Top liner to bottom on drill pipe. Circulate and condition the hole. Pump 7"cement job. 24. Change out rams to variable and test to 250 psi/3,500 psi 25. Test the liner to 3,500 psi for 30 charted minutes. - 26. Freeze protect the 7"x9-5/8"annulus. Record formation breakdown pressure in Openwells - 27. M/U the first 6-W Dir/GR/Res assembly with an insert bit. Pick Up DP as necessary. • 28. RIH, Drill out of cement and 7" liner float equipment. - 29. Displace to Flo Pro Fluid. • 30. Continue drilling out the 7"shoe plus -20' new formation, pull up into the shoe and perform a FIT. . egepr7 •••. 31. Drill the 6-'/s" production interval as per directional plan to end of the build section. 32. POOH for lateral motor and PDC. ' 33. PU lateral BHA w/FR/Res/Neu/Den and a PDC bit. 34. RIH, drill ahead to TD • 35. POOH. L/D BHA. 36. MU and RIH to bottom with 4-1h", 12.6#, L-80 solid liner. This will include 150' liner lap inside the 7" drilling liner. 37. Cement the liner. 38. Set liner top packer and displace well to clean seawater above the liner top. a. A pert pill will be left in the 4 1/2" liner. 39. POOH, L/D LRT. 40. Pressure test casing and liner to 3,500 psi for 30 minutes. • 41. RU DPC pert guns, RIH and perforate. Perf intervals to be supplied by asset. • 42. R/U and run a 4-1/2", 12.6#, 13Cr, VamTop tubing completion, stinging into the 4-1/2" liner tie back sleeve. 43. Space out and make up tubing hanger per FMC Rep. - 44. Land the tubing hanger, and run in lock down screws. - 45. Circulate Corrosion Inhibitor. • 46. Set packer and individually test the tubing and annulus to 3,500 psi for 30 minutes. Record each test. 47. Shear Circulating Valve 48. Set a BPV. 49. Nipple down the BOPE. Nipple up the tree and test to 5,000 psi. ' 50. Freeze protect the well to-2,200'TVD. Secure the well. • 51. RD and Move Off. Post-Rid 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: Abby Warren (907) 564-5720 Production Engineer: Alice Kaminski (907) 564-5676 Geologist: Doug Stoner (907) 564-5652 ATTACH: Current Schematic Pre-Rig Schematic Proposed Schematic 05-31 B Permit to Drill Application Page 9 TREE= 3-1/8"CM/ I SAFETY NOTES: WELL ANGLE>70°@ 9754'. WELLHEAD= FMC 05-3 1 A **C. 1ME TBG&LNR*** ACTUATOR= AXELSON KB. ELEV= 71' _ BF. ELEV= N/A KOP= 4100' 2016' H3-1/2 GAS"AVALIFT ACGAMANDRELS TRSSSV, ID=2.812" Max Angle= 94 @ 10458' O Datum MD= 9836' ii Datum TVD= 8800'SS ST; MD TVD DEV TYPE VLV LTCH PORT DATE 1 3071 3071 1 MMG-5 DMY RK 0 06/29/08 9-5/8"CSG,36#,J-55, ID=8.921" H 3499' 2 5165 5095 27 MMG-5 DMY RK F 0 06/29/08 E 3 6487 6197 34 MMG-5 DMY RK F 0 07/01/91 4 7237 6815 35 MMG-5 DMY RK ' 0 06/29/08 5 7978 7417 36 MMG-5 DMY RK ' 0 07/01/91 Minimum ID = 1.941" @ 8805' 6 8350 7721 35 MMG-5 DMY RK ' 0 11/19/98 7 8507 7851 33 MMG-5 DMY RKP P. 0 07/01/91 TOP OF 2-3/8" 4.7# LINER CHEM INJ MANDREL © ST MD TVD DEV TYPE VLV LTCH PORT DATE 8 8600 7929 32 KBUG CIV BK-2 r 8 12/14/94 8733' I-OTIS 4"BORE STRAIGHT SLOT LOCATOR, ID=2.970" 8737' H 7"X 3.5"OTIS BWD PKR, ID=4.000" I I4 1 8750' H B T M OF OTIS SEAL ASSY, ID=2.970" .* 8797' H 3-1/2"WFD WRP(07/01/08) 2-3/8"LNR TOP,4.7#, ID= 1.941" 8805' 8800' -12-3/8"BKR DEPLOYMENT SLV, ID=1.969" I III I 7"X 5"TIW LINER HANGER H 8812' 8853' I—I3-1/2"OTIS XN NIP, ID=2.80"(BEHIND LNR) 3-1/2"TBG,9.3#,13-CR, .0087 bpf, ID=2.992" H 8864' 8865' 1H3-1/2"WLEG(BEHIND LNR) I 7"CSG,26#,L-80, ID=6.276" H 9111' 5"MILLOUT WINDOW (05-31A) 9407'-9411' PERFORATION SUMMARY REF LOG: SWS THERMAL NEUTRON LOG 11/08/98 i�'�i cf; ANGLE AT TOP PERF: 82 @ 9896' i. ‘• Note:Refer to Production DB for historical pert data t. V ' SIZE SPF INTERVAL Opn/Sqz DATE �� vA 1-11/16" 4 9896- 10090 11/10/98 t ...�A��V 1-11/16" 4 10115-10233 C 11/10/98 ��v, ��1 10446' I-12-3/8"CIBP(12/06/01)CTM I 1-11/16" 4 10258-10352 C 11/10/98 ,y'��'��'� . / 1-11/16" 4 10490-10610 C 12/06/01 �� 1-11/16" 4 10665 10712 C 12/06/01 ... A. ' PBTD H 11045' I 1-11/16" 4 10780-10892 C 12/06/01 , '''♦z 5"LNR, 18#, 13CR, ID=4.276" H 9862' 2-3/8"LNR,4.7#, L-80, .0039 bpf, ID=1.941" IH 11071' I DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 07/01/91 ORIGINAL COMPLETION WELL: 05-31A 11/10/98 CTD SIDETRACK(05-31A) PERMIT No: 198-2070 02/05/02 CH/KAK CORRECTIONS API No: 50-029-22159-01 07/12/08 SEW/TLH WRP SET(07/01/08) 1737'FNL&5279'FEL,Sec.32,T11 N,R15E 07/18/08 ?/JMD GLV C/O(06/29/08) BP Exploration (Alaska) TREE= 3-1/8"CM/ I SAFETY NOTES: WELL ANGLE>70°@ 9754'. WELLHEAD= FMC 05-31 A **C- 'ME TBG 8 LNR*** ACTUATOR= AXELSON KB. ELEV= 71' BF. ELEV= N/A KOP= 4100' I 2016' H3-1/2"AVA ACGA TRSSSV, ID=2.812" I Max Angle= 94 @ 10458' 0 Datum MD= 9836' Datum TVD= 8800'SS GAS LIFT MANDRELS • ST MD TVD DEV TYPE VLV 'LTCH;PORT DATE 1 3071 3071 1 MMG-5 DMY RK ' 0 06/29/08 9-5/8"CSG,36#,J-55, ID=8.921" H 3499' ( 2 5165 5095 27 MMG-5 DMY RK ' 0 06/29/08 3 6487 6197 34 MMG-5 DMY RK ' 0 07/01/91 4 7237 6815 35 MMG-5 DMY RK ' 0 06/29/08 Tubing Cut H -4000 I 5 7978 7417 36 MMG-5 DMY RK ' 0 07/01/91 6 8350 7721 35 MMG-5 DMY RK ' 0 11/19/98 7 8507 7851 33 MMG-5 DMY RKP r 0 07/01/91 CHEM INJ MANDREL ST MD -ND DEV TYPE VLV LTCH PORT DATE 8 8600_7929 32 KBUG_ CIV BK-2 I. 8 12/14/94 TOC -J -7700 I 8733' I-OTIS 4"BORE STRAIGHT SLOT LOCATOR, ID=2.970" Minimum ID = 1.941" @ 8805' TOP OF 2-3/8" 4.7# LINER 8737' —17°X 3.5"OTIS BWD PKR, ID=4.000" I ►, 8750' H BTM OF OTIS SEAL ASSY, ID=2.970" I 2-3/8"LNR TOP,4.7#, ID=1.941" -j 8805' I 8800 12-3/8"BKR DEPLOYMENT SLV, ID=1.969" 7"X 5"TIW LINER HANGER H 8812' - I 8853' 11 3-1/2"OTIS XN NIP, ID=2.80"(BEHIND LNR) I 3-1/2"TBG,9.3#, 13-CR, .0087 bpf, ID=2.992" -I 8864' I \. 8865 I-f3-1/2"WLEG(BEHIND LNR) 7"CSG,26#, L-80,ID=6.276" H 9111' 5"MILLOUT WINDOW (05-31A) 9407'-9411' PERFORATION SUMMARY REF LOG: SWS THERMAL NEUTRON LOG 11/08/98 ; ;I c•4 ANGLE AT TOP PERF: 82 @ 9896' 'v.� � Note:Refer to Production DB for historical perf data � �� SIZE SPF INTERVAL Opn/Sqz DATE .40...........0��:04 ' 1-11/16" 4 9896- 10090 11/10/98 .0 .4.0.0.0�4�0, 1-11/16" 4 10115- 10233 C 11/10/98 ••••••••4 ,�� 10446' 1-12-3/8"CIBP(12/06/01)CTM I 1-11/16" 4 10258-10352 C 11/10/98 0'� ��S4 // 1-11/16" 4 10490-10610 C 12/06/01 V. 1-11/16" 4 10665-10712 C 12/06/01 �� PBTD -1 11045' I 1-11/16" 4 10780-10892 C 12/06/01 ,�♦�'�'�'� 0..4 WAWA .000004 .44:444....4:6.44...41 5"LNR, 18#,13CR, ID=4.276" -I 9862' �� ) 12-3/8"LNR,4.7#,L-80, .0039 bpf, ID=1.941" H 11071' I DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 07/01/91 ORIGINAL COMPLETION WELL: 05-31A 11/10/98 CTD SIDETRACK(05-31A) PERMIT No: 198-2070 02/05/02 CH/KAK CORRECTIONS AR No: 50-029-22159-01 07/12/08 SEW/TLH WRP SET(07/01/08) 1737'FNL&5279'FEL,Sec.32,T11 N,R15E 07/18/08 ?/JMD GLV C/O(06/29/08) BP Exploration (Alaska) TREE= FMC 05-31 B SAFFTY NOTES: WELLHEAD= FMC ACTUATOR= AXELSON Proposed KB. ELEV= 71' BF. ELEV = N/A KOP= Max Angle= Datum MD= 1 1 2200' H4-1/2"GAS X NIP,LIFT ID MANDR=3.813"ELS I Datum TVD= 8800'SS STI MD I TVD I DEV I TYPE VLV LTCH PORT DATE 9-5/8"CSG,36#,J-55, ID=8.921" H 3499' I 1 L 2 L 3 4 5 Banned KOP JH 3505' I Minimum ID = 3.725" XN Nipple o� �"�� 1.6C., /56 It , , 8250' I-14 1/2"X Nipple(3.813"ID) $ 8280' 1-17"x 4 1/2"HES TNT Packer I I 8310' --I4 1/2"X Nipple(3.813"ID) I II I 1 8340' j—J4 1/2"XN Nipple(3.725"ID) I 8350' I-l4 1/2"Hanger/liner top packer A 8353' —14 1/2"WLEG PERFORATION SUM A RY REF • 8503' —17"26#L-80(6.276"ID) I ANGLE AT TOP PERF: Note:Refer to Production CB for historical pert data SIZE SPF INTERVAL Opn/Sqz DATE eVI 'v4V4 1 1•�•1�1�11•• ∎•1•�•�•�••••/ •�•�•�•�•••• 4 1/2" 12.6#, L-80 IBMT H 11017' I DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 07/01/91 ORIGINAL COMPLETION WELL: 05-31B 11/10/98 CTD SIDETRACK(05-31A) PERMIT No: 02/05/02 CH/KAK CORRECTIONS API No: 50-029-22159-02 07/12/08 SEW/TLH WRP SET(07/01/08) 1737'FNL&5279'FEL,Sec.32,T11N,R15E 07/18/08 ?/JMD GLV C/O(06/29/08) 04/23/10_ AMW 05-31B Proposed Sidetrack BP Exploration(Alaska) N (p h O C W H O N p O80 0 48822 ;'.'22:.28 b b m bh NM, W V A O � 7- 0. 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N N N N C4 p O ❑ >> W - .0 Q by Schlumberger WELL I FIELD STRUCTURE DS05-31 B (P5) Prudhoe Bay Unit- EOA I DS-05 Magnetic Parameters 9urfane lxaeon NA027 Alaska State Plane.lone 04.US Feet I Miscellaneous Model: BGDM 2010 Dip: 80.981° Date: August 15,2010 Lat: N 7018 0 370 74006.19 5949704 24 SUS God Conv:1 69992394° Slot: 05-31 740 Ret: 68(83.57 above MSL) Meg Dec: 22.100° FS'. 57884.371 Lon: W 148 24 23.580 Easeng: 897049.38 SUS Scale Fact:0 99994411 Fan'. 05-318(75) Soil Data'.May 20.2010 0 800 1600 2400 3200 4000 • 15-31 3200 3200 Tie-In Survey Cry W100 V3 KOP Cry 4/100 4000 4000 4800 - _.._.._.. . .._. .._.._.._.._.._.. .._.._.._.._.._.._.._.._..t.._.._.._.._.._.._.._.._....._.._.._.._.._.._.._.._.s_.._.._.._.._.._.._.._.._g_.._ 4800 End Cry 5600 5600 co0 o c �.._.._..�.._.._. .._.._.._.._.._..a.._.._.._.._.._.._.._.._..04.._.._.._.._.._.._.._.._._.._.._.._.._.._.._.._.._a_.._ 6400 •1 6400 co F _.._.._.._.._._.._.._.._.._.._.._. .._.._.._.._.._.._.._.._..a _.._.._.._.._.._.._.._....._.._.._.._.._.._.._.._._.._.._.._.._.._.._.._.._a_.._... 7200 a 7200 • • _.._.._.._.._._.._.._.._.._.._.._.._..-(.. 4/i.._.._.._.._.._.._..a••_.._.._.._.. ._.._.e_..f.._.._.a_.._.._.._.._.._._.._.._.._.._.._.._.._.._a_.._ 8000 _.._.._.._.._.._.._.._.._.._.._.._.. .:.._.._.._.._.._.._.._.._._.._.._.._.._.._.._.._..___.._ 8000 8800 =.._.._..:..:._.._._._ _ _ _._. _ _._ _. 4- _..= . =.._.. �= =._.._.._._.._._.._.._.._.._.. ._ :..: 8800 05-318 Tgt t zair Lnr End Cry 5'Lnr TO 05-318(P5) 05-31 0 800 1600 2400 3200 4000 Vertical Section(ft)Azim=287.11°,Scale=1(in):800(ft) Origin=0 NI-S,0 E/-V o O O O O u) O O u) 0 r q V co C S A w Z /- U O O a U U co a a z 8° a 1. e W Y x o o 0 a __ O o CD 'e' 0 O I°° 00 O o .. o H Z a U A A m fj A w s`. o .e Q 8€LL O ° m O O Ih: M t o O O O o N . O V N V m a 1 V VN a gz3 3 c m39 O . . O — — ..�. ................................ N N `c a$ J n o N O a_ O ..m... 00 M z.T, M Q r `,.- ° o a m CO of M In o 8 CO 0 eR M M nw 3 II 1 O O O O O O O in O U) «< N (4)009:(u!)I•=aleoS S >>> BP PASSPORT Anticollision Report Company: North America ALASKA-BP Local Co-ordinate Reference: Well 05-31 Project: Prudhoe Bay TVD Reference: 05-31B Plan @ 63.50ft(Nabors 7ES) Reference Site: --PB-DS-05— MD Reference: —05-31B-Pfau@-63.50ft(Nabors 7ES)- Site Error: 0.00ft North Reference: True Reference Well: -05-31------- Survey Calculation Method: Minimum-Curvature Well Error: 0.00ft Output errors are at 1.00 sigma Reference Wellbore Plan 05-31B Database: EDM.16-Anc Prod-WH24P Reference Design: Plan#5 05-31B Offset TVD Reference: Offset Datum Reference Plan#5 05-31B Filter type: GLOBAL FILTER APPLIED:All wellpaths within 200'+100/1000 of refer Interpolation Method:IGfDInterval 5.00ff Error Model: ISCWSA Depth Range: 3,505.00 to 11,016.54ft Scan Method: Tray.Cylinder North Results Limited by:--Maximum-center-centerdistanceo f-1-,298.80f- Error Surface: Elliptical-Conic Survey Tool Program Date 5/25/2010 From To (ftj- (ft) Survey(Wellbore) -ToofName Description - — 43.03 3,490.18 05-31 Srvy#1 GCT-MS(05-31) GCT-MS Schlumberger GCT multishot 3,490.18 3,900.00 Plan#5 05-31B(Plan 05-31 B) GYD-GC-SS Gyrodata gyro single shots 3,900.00 8,503.98 Plan#5 05-31B(Plan 05-31B) MWD+IFR+MS MWD+IFR+Multi Station 8,503.98 11,016.54 Plan#5 05-31B(Plan 05-31B) MWD+IFR+MS MWD+IFR+Multi Station 55125/201-0-5:21:44 Page 2 of 4 COMPASS 2003.16 Build 71 BPPASSPORT Anticollision Report North America-ALASKA-BP Local Co-ordinate Reference: Well 05-31 Project: Prudhoe Bay TVD Reference: 05-31B Plan @ 63.50ft(Nabors 7ES) Reference Site: PB DS-05 MD-Reference: -- 05-31B Plan @@-e3.50ft(Nabors 7ES) Site Error: 0.00ft North Reference: True Reference-Well: 05-31 Survey-Calculation Method: _Minimum-Curvature Well Error: 0.00ft Output errors are at 1.00 sigma Reference Wellbore Plan 05-31B Database: EDM.16-Anc Prod-WH24P Reference Design: Plan#5 05-31B 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 Offset-Well-Wetlbore-Design. (ft) (ft) - (ft) (ft) PB DS 05 05-11-05-11-05-11- 3,811.64 3,830.00 750.94 48.67 702.35 Pass Major Risk 05-11 -05-11A-05-11A 3,812.47 3,835.00 750.94 48.68 702.35 Pass-Major Risk 05-12-05-12-05-12 8,721.75 8,900.00 226.24 92.13 151.64 Pass-Major Risk 05-12-05-12A-05-12A 8,915.72 9,190.00 209.40 94.77 142.89 Pass-Major Risk 05-12-05-12B-05-12B 8,721.75 8,900.00 226.24 92.13 151.64 Pass-Major Risk 05-12-05-12B-Plan#10 8,725.42 8,905.00 226.22 92.96 151.70 Pass-Major Risk 05-13-05-13-05-13 4,036.13 4,140.00 210.11 96.77 113.61 Pass-Major Risk 05-13-05-13A-05-13A 4,033.63 4,130.00 210.04 96.64 113.63 Pass-Major Risk 05-13-05-13B-05-13B 4,033.63 4,130.00 210.04 96.64 113.63 Pass-Major Risk 05-14-05-14-05-14 3,957.80 4,015.00 175.16 59.28 115.97 Pass-Major Risk 05-1-4A-05-14A-05-14A 3,957.80- 4,015.00 175.16 53.28 115.97 Pass-Major Risk 05-15-05-15-05-15 3,826.18 3,870.00 103.30 73.73 29.54 Pass-Major Risk 05-15A-05-15A-05-15A 3,815.85 3,860.00 102.36 73.71 28.62 Pass-Major Risk 05-15B-05-15B-05-T5B 3,815 85 3,860.00 102.36 73.71 28.62 Pass-Major Risk 05-15BPB1 -05-15BPB1 -05-15BPB1 3,815.85 3,860.00 102.36 73.71 28.62 Pass-Major Risk 05 46-05-16-05-16 3,581.30 3,610.00 __ 88.23 46.92 41.31 Pass-Major Risk 05-16-05-16A-05-16A 3,581.30 3,610.00 88.23 47.04 41.19 Pass-Major Risk 05-16-05-16B-05-16B 3,580.42 3,605.00 88.22 47.04 41.18 Pass-Major Risk 05-16-Plan 2,05-16C-Plan 2 3,580.42 3,605.00 88.22 47.04 41.18 Pass-Major Risk 05-16_DIMS-05-16-05-16 Out of range 05-16_DIMS-05-16A-05-16A Out of range 05-16_DIMS-05-16B-05-16B Out of range 05-17-05-17-05-17 3,774.46 3,770.00 49.78 45.44 4.42 Pass-Major Risk 05-17A-05-17A-05-1-7A- 3,779.44 3,775.00 50.04 45.65 4.47 Pass-Major Risk 05-17B-05-17B-05-17B 3,774.46 3,770.00 49.78 45.44 4.42 Pass-Major Risk 05-23-05-23-05-23 4,991.74 4,985.00 56.24 52.30 4.21 Pass-Major Risk 05-23-05-23A-05-23A 4,991.74 4,985.00 56.24 52.30 4.21 Pass-Major Risk 05-23-05-23B-05-23B 3,508.37 3,515.00 115.91 51.81 64.24 Pass-Major Risk 05-26-05-26-05-26 3,505.30 3,640.00 602.34 63.23 542.23 Pass-Major Risk 05-26-05-26A-05-26A/ 3,507.15 3,640.00 603.77 63.25 543.64 Pass-Major Risk 05-30-05-30-05-30✓ .3,50.5.00 3,520,00 _ 190A1_..__1,902 49_ -1,711 49 .:FAIL-Major Rick 05-31 -05-31 -05-31 - 3,537.50 3,545.00 - 0.34 1.93 -1.60 FAIL-Major Risk 05-31 -05-31A-05-31A 3,537.50 3,545.00 0.34 1.93 -1.60 FAIL-Major Risk 05-33--Plan 05-33B-05-33B Wp 3.0 9,687.06 9,320.00 928.01 115.48-- 813.05 Pass-Major Risk 05-34-05-34-05-34 10,405.72 10,163.00 778.01 589.74 192.15 Pass-Major Risk 05-34-05-34A-05-34A 8,670.63 8,745.00 368.05 97.10 272.45 Pass-Major Risk 05-35-05-35-05-35 3,607.50 3,685.00 466.31 62.37 403.93 Pass-Major Risk 05-35-05-35A-05-35A 3,845.04 4,010.00 537.54 180.35 377.70 Pass-Major Risk 5/25/2011i 5:21:44PM Page 3 of 4 COMPASS 2003.16 Build 71 Project: Prudhoe Bay Situ PB DS--05 - Well: 05-31 Wellbore: Plan 05-31B Design: Plan #5 05-31B From KOP to TD Scan interval 100 ft Scale 1 : 50 All wells pass major risk However there are 3 nearby wells 0 175 330 30 150 4111114 ii(*,, k. 300 4w, �_►►�; � - - No\4 710 1 A �> h FV'' 11k \`-_t� Op) j�'; '• 05-2315-23A' ■ /Avv... .41,,,-47.-„iiI,,,. r, 519' 52.9-7--- , ,t,..„. 10,4„,„...,,,,m7.41 270 �' � - 90 eAll■ 1$pz$i11u14/05If.0 ii , 1#441 3946 fir *j!�L. 1 i- �� ,; 7401v0.4/4111 240 kh:‘4 -- `.�L I-It �j• f ,�. 120 Mgr, A I" I I---1/4___.‘4 14-044 11 N.,t,, AblArorge ,44,10". � r r ��ggpp %- 210 3551 aie A 150 A � 180 Travelling Cylinder Azimuth(TFO+AZI)[1 vs Centre to Centre Separation[50 Win] Project: Prudhoe Bay Situ P-B_DS 05 Well: 05-31 Wellbore: Plan 05-31B Design: Plan #5 05-31B From KOP to TD Scan interval 100 ft Scale 1 :50 )5-17 and 05-23 Pass 1200 risk rule 0 1 330 30 , 150 05-23/05-23B 1 300 �[ NOW 60 05-1500E1 1581,111 4 . * 1•f f05.3 .1t• ... ..• ! JVIV 5°08'' S1'' -- 05.23105,23111 MilPic, � i,1 1 L Wall i 270 ik' _,' � , - 90 c �� OS14Af05- � ,I fir^ \ t + '. �I "it 4, .10:111%.• --Ik,,, 210 ®�. tai `. j \ '20 \ /00Arr , hip ilir 1111 4% N. Mb- .414110elkillipl /104,Pavy,717: insios=m3 210 A % lifr 50 . -410111 180 Travelling Cylinder Azimuth(TFO+AZI)[0]vs Centre to Centre Separation(50 Win] 1 / 1 , 1 liff fii -3600 . hIgilli :-., gli V i -3300 1 1 I -3000 l /i l/ -2700 il il -21+00 1 1 /I li -2100 , 8 ' I 1/ - 1800 - 1500 I / 1 if - 1200 . 0 -900 g-;• 11 * El -GOO if lb (..0 Cn _D ___ _ (xi 0 0 0 0 0 0 • 0 > Alaska Department of Natural P°sources Land Administration System Page 1 of(i( }Alaska Mapper Land Records/Status Plats Recorder's Search State Cabins Natural Resources Alaska DNR Case Summary File Type: ADL File Number: 28326 8 Printable Case File Summary See Township,Range, Section and Acreage? ® Yes Q No [ New Search LAS Menu I Case Abstract I Case Detail I Land Abstract File: ADL 28326 •'t Search for Status Plat Updates As of 06/25/2010 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: 09/14/1965 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: O11N Range: 015E Section: 29 Section Acres: 640 Search Plats Meridian: U Township: O11N Range: 015E Section: 30 Section Acres: 604 Meridian: U Township: O11N Range: 015E Section: 31 Section Acres: 607 Meridian: U Township: O11N Range: 015E Section: 32 Section Acres: 640 Legal Description 05-28-1965 ***SALE NOTICE LEGAL DESCRIPTION*** C14-156 T11N-R15E-UM29,30,31,32 2491.00 U-3- 7 End of Case Summary Last updated on 06/25/2010. http://dnr.alaska.gov/projects/las/Case Summary.cfm?FileType=ADL&FileNumber=2832... 6/25/2010 TRANSMITTAL LETTER CHECKLIST WELL NAME 8z' Os-0/z7 PTD# c=.2JOO.S ,/Development Service Exploratory Stratigraphic Test Non-Conventional Well FIELD: �e 1.4,0e"..2 Q/ POOL: /e.. .e!44.40/ 34Y 0/4 Circle Appropriate Letter I 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(f), 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 E To co a°)) 0- ( (n 41 0 o @ O L O O � C Q "° a) C a) E a) U 0 -° O @ N N U > L ' 0 Q �O t- --C- E Y m E O @ n `O 7 m cc; a a) _ 3 o ° M "O O r N N 0. > W O L c L N > (D m D ai 3' 2 M U W .N n us c 1- 3 c p @ a) N `. co @ O Z a O CO p a w ° C n d m E co Q a ° m w U L ° m o cn on (h c a - M co (O p (� a P 0 D E 3 ii aa) o m I co co D > t 't :� o 0 0 _ °cn 3. 0 c a) a a m °co N p -o N o co CO C m c U N _8 C C 0 u ( N CO O U U p a) 7 -p N 0 CD CO U a) a) Q 0.) 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