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210-023
New Plugback Esets 7/18/2024 Well Name API Number PTD Number ESet Number Date 09-44A PB1 50-029-22087-70-00 209-157 T39240 6-11-2010 15-27A PB1 50-029-22243-70-00 210-023 T39241 8-11-2010 17-09A PB1 50-029-20617-70-00 209-160 T39242 5-10-2010 18-10C PB1 50-029-20818-72-00 210-112 T39243 1-10-2011 G-30C PB1 50-029-21613-70-00 209-151 T39244 7-26-2010 K-10C PB1 50-029-21762-73-00 210-128 T39245 8-24-2011 M-17AL1 PB1 50-029-20627-70-00 211-086 T39246 3-30-2012 M-38A PB1 50-029-22519-70-00 201-132 T39247 2-22-2006 S-106 PB1 50-029-22999-70-00 201-012 T39248 2-22-2006 Z-113 PB1 50-029-23450-70-00 211-084 T39249 12-1-2011 15-27A PB1 50-029-22243-70-00 210-023 T39241 8-11 -2010 STATE OF ALASKA ��� ALASKA OIL AND GAS CONSERVATION COMMISSION WELL COMPLETION OR RECOMPLETION REPORT AND LOG la. Well Status: Oil ❑ Gas ❑ SPLUG ❑ Other ❑ Abandoned 0 Suspended ❑ lb. Well lass: 20AAC 25.105 20MC 25.110 GINJ ❑ WINJ ❑ WAG ❑ WDSPL ❑ No. of Completions: Zero gnt to lO ❑ Developmp �( `(" Service fes! RIC/I�6b ❑ 2. Operator Name: S. Date Comp., Susp., or Abend.: 14. Permit to Drill Number/Sundry BP Exploration (Alaska), Inc 6/15/2019 210-023 s 318-140 3, Address: 7, Date Spudded: 15_ API Number „ P.O. Box 196612 Anchorage, AK 99519-6612 4/14/2010 50-029-22243-01-00 4a. Location of Well (Governmental Section): 8, Date TO Reached 16. Well Name and Number. &1412010 PBU 15-27A Surface: 324' FNL, 58' FWL, Sec. 22, Tl IN, R14E, UM 9 Ref Elevations Kg 60 35 17. Field/Pool(s): - Top of Productive Interval: 39' FSL, 907' FVv-, Sec. 10, TI IN, R14E, UM GL 3220 ' BF 33.99 - PRUDHOE BAY, PRUDHOE OIL Total Depth: 2887' FSL, 721' FW-, Sec. 10, T11N, R14E, UM . 10. Plug Back Depth(MDrTVD): 18. Property Designation: 14403'/ 8718' ADL 028306 8 028303 4b. 4b. Location of Well (State Base Plane Coordinates, NAD 27): 11. Total Depth (MD/TVD): 19. DNR Approval Number: Surface: x- 675968 y- 5961157 Zone - ASP 4 14870'/ 8732' 78-084 TPI: x- 676672 y- 5966819 Zone - ASP 4 12. SSSV Depth (MD/TVD): 20 Thickness of Permafrost MDrrVD: Total Depth: x- 676422 y- 5969662 Zone - ASP 4 None 1900'(Approx.) 1 5. Directional or Inclination Survey: Yes ❑ (attached) No 0 13. Water Depth, if Offshore: 21. Re4nll2ateml Top window Submit electronic and pried information per 20 AAC 25.050 N/A (ft MSL) MD/TVD: 3810'/ 3809' 22, Logs Obtained List all logs run and, pursuant to AS 31.05.030 and 20 AAC 25.071, submit all electronic data and pitted logs within 90 days of completion, suspension, or abandonment, whichever occurs first. Types of logs to be listed include, but are not limited to: mud log, spontaneous potential, gamma ray, caliper, resistivity, porosity, magnetic resonance, dipmeter, formation tester, temperature, cement evaluation, casing collar locator, jewelry, and perforation record. Acronyms may be used. Attach a separate page if necessary MWD/GR/RES, MWD/GR/RES/DEN I NEU 23, CASING, LINER AND CEMENTING RECORD CASING WT. PER FT. GRADE SETTINGOEPTHMD SETTINGDEPTHTVD HOLESIZE CEMENTING RECORD AMOUNT PULLED TOP BOTTOM TOP BOTTOM 20" 91.5# H<o 29' 109' 29' 109' 30" 232 cu fl Coldest II 13-3/8'• 68# K-SULaa 29' 3486' 29' 3485' 16" 2584 Cu fl Coldest III, 460 cu ft Class'G' 9-5/8" 47# L-80 28' 3810' 26' 3809' 12-1/4" 2780 ou R Class'G' 7" 26# L-80 3658' 11446' 3657' 8191' 8-1/2" 221 cu fl Class'G', 422 cu ft Class'G' 4-112" 12.6# L-ao 11271' 14862' 8047' 8732' 6-118" 505 cu it Class'G' 24. Open to production or injection? Yes ❑ No 0 25. TUBING RECORD If Yes, list each interval open (MD/TVD of Top and Bottom; Perforation Size and Number; Date Perfd): GRADE DEPTH SET (MD) PACKER SET (MD/ry 4-112" 12.6# 13Cr85 11279' 11165'17959' /� /'� f 26. ACID, FRACTURE, CEMENT SQUEEZE, ETC. ' 1 511 D TE S ♦ Was hydraulic fracturing used during completion? Yes ❑ No 0 Per 20 AAC 25.283 (i)(2) attach electronic and printed information VERIFIED DEPTHINTERVAL(MD) AMOUNT AND KIND OF MATERIAL USED 14403' Set Whipstock —'—"—�--�- 27, PRODUCTION TEST Date First Production: No on Production Method of operation (Flowing, gas lift, etc$ WA Data of TestProduction Hours Tesfetl:: for Test Period —► Oil-Bbl Gas-MCF: Water -Bbl: Choke Si7e Gas -Oil Ratio Flow Tubing Casing Press: I Calculated Oil -Bbl: Gas -MCF: Water Sol Oil GmviN- API (oorr): Press 24 Hour Rate -.0. Form 10-407 Revised 52017 CONTINUED ON PAGE 2 Submit ORIGINAL only RBDMS & JUL 10 2019 11-1- /vt A 28. CORE DATA Conventional Consist Yes ❑ No ® Sidewall Cores Yes ❑ No If Yes to either question, list formations and intervals cored (MD+TVD of top and bottom of each), and summarize Ihhology and presence of oil, gas or water (submit separate sheets with this form, if needed). Submit detailed descriptions, core chips, photographs and laboratory analytical results per 20 AAC 25.071. 29. GEOLOGIC MARKERS (List all formations and markers encountered): 30. FORMATION TESTS NAME MD TVD Permafrost - Top Well Tested? Yes ❑ No Permafrost - Base If yes, list intervals and formations tested, briefly summarizing test results. Attach Top of Productive Interval 11449' 8193' separate sheets to this fomi, if needed, and submit detailed test information per 20 AAC 25.071- Ugnu 4647' 4608' West Bak 7298' 5923' Coleville Mudstone 8228' 6318' HRZ 10905' 7742' Base of HRZ 11154' 7950' LCU 11270' 8046' Sag River 11449' 8193' ShublikA 11500' 8237' Shublik B 11528' 8261' Shublik C 11549' 8280' Sadlerochit-Zone 4 11575' 8303' CGL - Zone 3 11711' 8421' Base of CGL - Zone 2C 11790' 8482' 23SB - Zone 2B 11857' 8530' 22TS 11930' 8576' 21TS - Zone 2A 12015' 8630' Zone 1 B 12112' 8680' TDF - Zone 1A 12218' 8717' Formation at total depth: Zone to 12218' 8717' 31. List Of Attachments: Summary of Pre -Rig Work, Summary of Daily Drilling Reports, Wellbore Schematic Survey Information to be attached includes, but is not limited to: summary of daily operations, wellbore schematic, directional or inclination survey, care analysis, paleontological report, production or well test results, per 20 AAC 25.070. 32. 1 hereby certify that the foregoing is true and correct to the best of my knowledge. Authorized Name: Lastufka, Joseph N Contact Name: Hartley, Josephine Authorized Title: SI S ialist Contact Email: Josephine.Hartley@bp.com Authorized Signature: Date: Contact Phone: +1 9075644570 INSTRUCTIONS General: This form is designed for submitting a complete and corect well completion report and log on all types of lands and leases in Alaska. Submit a well schematic diagram with each 10-407 well completion report and 10-404 well sundry report when the downhole well design is changed. All laboratory analytical reports regarding samples or tests from a well must be submitted to the AOGCC, no matter when the analyses are conducted. Item la. 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 1b. Well Class Service wells: Gas Injection, Water Injection, Water-Altemating-Gas Injection, Salt Water Disp, Water Supply for Injection, Observation or Other. Item 4b. TPI (Top of Producing Interval). Item 9. The Kelly Bushing and Ground Level elevations in feet above mean sea level. Use same as reference for depth measurements given in other spaces on this form and in any attachments. Item 15. The API number reported to AOGCC must be 14 digits (ex: 50-029-20123-00-00). Item 20. Report true vemcal thickness of permafrost in Box 20. Provide MD and TVD for the top and base of permafrost in Box 29. Item 22. Review the reporting requirements of 20 AAC 25.071 and, pursuant to AS 31.05.030, submit all electronic data and printed logs within 90 days of completion, suspension, or abandonment, whichever occurs first. Item 23. Attached supplemental records should show the details of any multiple stage cementing and the location of the cementing tool. Item 24. If this well is completed for separate production from more than one interval (multiple completion), so state in item 1, and in item 23 show the producing intervals for only the interval reported in item 26. (Submit a separate form for each additional interval to be separately produced, showing the data pertinent to such interval). Item 27. Method of Operation: Flowing, Gas Lift, Rod Pump, Hydraulic Pump, Submersible, Water Injection, Gas Injection, Shut-in, or Other (explain). Item 28. Provide a listing of intervals cored and the corresponding formations, and a brief description in this box. Submit detailed description and analytical laboratory information required by 20 AAC 25.071. Item 30. Provide a listing of intervals tested and the corresponding formation, and a brief summary in this box. Submit detailed test and analytical laboratory information required by 20 AAC 25.071. Item 31. Pursuant to 20 AAC 25,070, attach to this form: well schematic diagram, summary of daily well operations, directional or inclination survey, and other tests as required including, but not limited to: core analysis, paleontological report, production or well test results. Form 10-407 Revised 5/2017 Submit ORIGINAL Only Daily Report of Well Operations 15-27A ACTIVITYFATF m inenneov TWO = 2300/1300/0. Temp = SI. IA FL (SL REQ). No AL, Wellhouse or flowline. IA FL @ 990'(53 bbls). 5/18/2019 Slickline in control of well upon departure. 17:00 ***WELL S/I UPON ARRIVAL*** (ctd) ATTEMPTED TO SET WHIDDON, SD HIGH @ 7,784' SLM RAN 3.80" GAUGE RING, 4 1/2" BRUSH TO XN-NIPPLE @ 11,257' SLM (brushed tight spot) SET 4 1/2" WHIDDON ON XN-NIPPLE @ 11,261' SLM 5/18/2019 ***CONT WSR ON 5/19/19*** LRS Unit 72- Assist SSL Temp= SI Load & Test ( MIT- IA ) Arrive on locatioin, Sign in 5/18/2019 with SSL, Spot equipment, ***WSR Continued on 05-19-19*** ***WSR Continued from 05-18-19*** T/I/O= 2271/1463/7 Temp= S/I Assist SSL w/ Load & Test (CTD) MIT -IA ***Passed*** at 2680 psi. Max applied 2750 psi target psi 2500. Pressured up IA with 4.2 bbls crude. 1st 15 min IA lost 46 psi, 2nd 15 min IA lost 20 psi for a total of 66 psi in 30 min. Bled back 3.8 bbls crude. Loaded IA with 5 bbls 50/50 followed by 5/19/2019 320 bbls crude. Tags hung on IAC. SSL on well at departure. FWHP= 2182/490/155 ***CONT WSR FROM 5/18/19*** (ctd) PULLED BK-S/O & SET BEK-FLOW SLEEVE IN STA#2 @ 7,778' MD PULLED RK-LGLV & SET RK-DGLV IN ST#3 @ 3,549' MD PULLED BEK-FLOW SLEEVE & SET BK-DGLV IN ST#2 @ 7,778' MD LRS PERFORMED PASSING MIT -IA (pressure test) TO 2,680psi PULLED EMPTY WHIDDON FROM XN @ 11,266' MD RAN 3.70" CENT, 2-1/2" SAMPLE BAILER TO DEVIATION @ 12,280' SLM (80 degrees) RAN 20'x 3.70" DUMMY WHIPSTOCK TO DOGLEG @ 12,095' SLM 5/19/2019 ***WELL S/I ON DEPARTURE, PAD OP NOTIFIED OF WELL STATUS*** CTU 9 1.75" CT Job Objective: Pre CTD - Mill XN, Set two stage whipstock Standby for well support's completion of the rig up. MIRU. 5/19/2019 ***Job Continued on 5/20/19*** CTU 9 1.75" CT Job Objective: Pre CTD - Mill XN, Set two stage whipstock MIRU. MU left handed milling assembly w/ 3.795' mill and 3.8" reamer with 3.8" centralizer, Tagged the XN at 11 269'ctm. Milled the XN and drifted to 14395' ctm. Tagged soft fill. POOH to change up the Cleaning assembly. OOH with milling assembly and centralizer still gauged 3.800" No -Go. MU 2.35" DJN. RIH to 14554 and did not see anything. Performed fluff and stuff cleanout from 14100-14500. POOH. 5/20/2019 ***Job Continued on 5/21/19*** CTU 9 1.75" CT Job Objective: Pre CTD - Mill XN, Set two stage whipstock POOH with DJN assembly. Make up and RIH with GR/CCL and whipstock drift BHA. Tagged at 14410CTM and could not make hole. Logged up to surface and painted a flag at 14325. Send log data to town and decision made to pick up a motor and mill and make it to 14500. RIH with 3.800" mill and string reamer. 5/21/2019 ***Job Continued on 5/22/19*** Daily Report of Well Operations 15-27A CTU 9 1.75" CT Job Objective: Pre CTD - Mill XN, Set two stage whipstock Contnue in hole with 3.800" motor and mill assembly. Tagged at 14385. Mill down to 14550. Ream back up to 11415. Dry drift down to 14550, POOH. Make up and RIH with GR/CCL and whipstock drift BHA. Tagged @ 14,588.7 ctm, logged UH to 11,000' ctm. OOH with logging tools and have a +9.5' correction making corrected EOP at flag + 14305.93'. Index caliper in gun carrier to WS anchor. Make up and RIH with anchor assembly. 5/22/2019 ***Job Continued on 5/23/19*** CTU 9 1.75" CT Job Objective: Pre CTD - Mill XN, Set two stage whipstock Contnue RIH with anchor assembly. Correct depth at flag and set anchor section's middle element at 14417.13. POOH, lay down setting tool and download caliper data. Caliper data showed 284 degrees. Set up whipstock to latch at 140 degrees left of high side. Tag the anchor at 14424 ctm. Confirm that the tray latched. Re latch and set whipstock. POOH. Well freeze protected with 38bbl of 50/50. RDMO. 5/23/2019 ***Job Complete*** T/I/O = 1300/0/0. Set 4" H TWC #430 @125", Performed LTT on TWC (Pass). RD Upper tree, MV RTJ groove was corroded, Contacted VSC Instructed to reinstall Upper tree, RU Upper tree. PT'd against TWC 350/5000PSI (Pass) Charted and Retained. RDMO. FWPs 5/26/2019 = 1300/0/0. T/l/O = TWC/0/0. Pull TWC. RU CIW lubricator with 4"'H' Pulling tool. PT to 350/3500 (PASS) Run down and pull 4" CIW TWC #430 at 120". RD lubricator. RDMO Slickline on 5/27/2019 location to RU ***Job Complete*** SEE LOG FOR DEATAILS. Final T/I/O = 1300/0/0. T/1/0=1500/Vac/Vac, LRS Unit 46 -Assist SLB Slickline: Load & Test) *** Pumped 5 bbls Methanol (50/50) followed by 260 bbls Crude to load TBG for tree replacement, ***WSR 5/27/2019 continued to 05/28/19*** ****WELL S/I UPON ARRIVAL"" (Pre CTD) ASSIST WELL SUPPORT CREW W/ PULLING TWC DRIFTED W/ 4-1/2" BRUSH, 3.80" G -RING TO 5,415' SLM (Work tools lightly from 5,240' slm) LRS LOADED TBG W/ 260 BBLS CRUDE 5/27/2019 ****CONT JOB ON 5/28/19**** ****CONT FROM PREVIOUS AWGRS ENTRY**** (Pre CTD) ASSIST WELL SUPPORT W/ CDR TREE INSTALLATION PULLED 4-1/2" PX -PLUG FROM 2,215' SLM / 2,234' MD 5/28/2019 ****WELL LEFT S/I & DSO NOTIFIED OF STATUS UPON DEPARTURE***** ***WSR continued from 05/27/19*** (LRS Unit 46 - Assist Slickline: Load & Test) MIT -T ***PASSED*** to 2531 psi, Pumped .5 bbls crude to reach max applied of 2750 psi, tarqet osi 2500. 1st 15 min TBG lost 20 osi. 2nd 15 in TBG lost 19 psi for a total loss of 39 psi in 30 min. Bled back .9 bbls crude. SSL in control of welll @ departure 5/28/2019 FWHP=20/-13/-3 ****CONT. JOB FROM 5/27/19**** (Pre CTD) SET 4-1/2" PX -PLUG @ 2,215' SLM / 2,234' MD RAN CHECK SET TO PX -PLUG BODY @ 2,234' MD (Sheared) LRS PERFORMED PASSING MIT -T TO 2,500 psi 5/28/2019 ***END TICKET, START NEW AWGRS ENTRY*** Daily Report of Well Operations 15-27A TWO = 250/0/0. Pre CDR2/MV Swap. RU CIW lubricator with 4" CIW 'H' TWC #438 and PT o 350/3500psi (PASS) Run down and set at 120". RD lubricator. Remove 4" CIW tree and install 4" CIW Tag #38 as MV. Torque to API specs. Install 4" CDR2 Tree #6. Torque to API specs. Install CDR KL #3. Torque to API specs. Install 4" ASV #25. Torque to API specs. RU CIW lubricator with 4"'H' pulling tool. PT to 350/5000 (PASS). Run down and pull TWC #438 at 120". RDMO Slickline on location to RU to well. ***Job in Progress*** SEE LOG 5/28/2019 FOR DETAILS Final TWO = 0/0/0. T/I/O = 300/0/0. Pre CDR. RD 4" ASV #25. RU Test Spool #7 on CDR tree. PT'd Test 5/29/2019 Ispool against SV, 350/5000PSI (Pass) Charted and Retained. RDMO. FWPs = 500/0/0 North America - ALASKA - BP Operation Summary Report Common Well Name: 15-27 Event Type: RE -ENTER -ONSHORE (RON) Start Date: 6/13/2019 End Date. 6/21/2019 Protect: PBU - - - - - Site: 15 AFE No X3-019FG-C:(2,422,018.00) Page 1 atN Rig Contractor: NABORS ALASKA DRILLING INC. BPUOI: USA00000945 Active datum: RT @60.35usft (above Mean Sea Levert Date From - To Him Task Code NPT Total Depth Phase Description of Operations _ (hr) (usft) 6/13/2019 0630 - 0700 0.50 MOB P PRE PREP TO MOVE OFF F -34C 07:00 - 09:00 2.00 MOB P PRE PRE JOB SAFETY MEETING WITH CREWAND TRUCK DRIVERS. - EMPHASIS ON GOOD COMMUNICATION, VERIFY STOP COMMAND. - STOP BLOCK IN PLACE TO PREVENT RIG FROM ROLLING BACKWARDS INTO WELL. - VALVES ON TREE SHUT IN ANDALL ANNULUS PRESSURES LESS THAN 50 PSI. - DRILL SITE OPERATOR NOTIFIED AND DECLINED WITNESSING RIG MOVE OVER WELL. - ANYONE CAN STOP THE JOB ATANYTIME BE WATCHFUL - MOVE MAIN AND PIT SUBS OFF WELL -INSTALLJEEPS____ _ 0900 - 14'.00 5.00 MOB P PRE MOVE TO DS 15 14:00 - 16:30 2.50 MOB P PRE RIG ON DS 15 -REMOVE JEEPS - SPOT MAIN SUB THEN INSTALL CRAWLER 16:30 - 18.30 2.00 MOB P PRE SPOT RIG WITH CRAWLER - PJSM TO REVIEW PROCEDURE AND ASSIGN 'SPOTTERS - MOVE RIG BACK, TEST E -STOP, E -STOP SHUT DOWN THE HYDRAULICS - SPOT RIG OVER WELL - RIG SPOTTED, HOLD AAR -RD CRAWLER - SPOT PITS "'RIG ACCEPTED AT 18:30- 18:30 - 00:00 5.50 ROU P PRE PJSM, - RIG UP CHECKLISTS - LTT BETWEEN SWAB AND MASTER TO 3500#. GOOD TEST - NIPPLE UP MPD LINE, NIPPLE DOWN TREE CAP. - EVACUATE FLUID DOWN TO SWAB VALVE. - INSTALL 7.06" TEST PLUG IN TEST SPOOL. (1-1/2' MT BOX) _ - NIPPLE UP ROPE 6/14/2019 00:00 - 03:30 3.50 RIGU P PRE NIPPLING UP BOPE - PREPARE TEST JOINT AND TIWS -INSTALL INJECTOR, REPLACE PACK -OFFS. - VALVE CREW CHECK TORQUE ON TREE BOLTS 03:30 - 04:00 0.50 RIGU P PRE PRESPUD WITH WARDS (MICAH'S) CREW 04:00 - 07:00 3.00 RIGU P PRE FLUID PACK FOR BOPE TESTING -SHELL TEST BOPE Printed 7/6/2019 3.44:34PM **All depths reported in Drillers Depths— Common Well Name: 15-27 Event Type: RE-ENTER- ONSHORE (RON) Project: PBU Rig Name/No.: CDR -2 Rig Contractor: NABORS ALASKA DRILLING I Active datum: RT @60.35usR (above Mean Sea Level) Date From - To Hrs Task (hr) 07:00 - 21:00 14.00 BOPSUR North America - ALASKA - BP Operation Summary Report Stan Date: 6/13/2019 End Date: 6/21/2019 Site: 15 Spud Daternme: 1/20/1992 12:00 OOAM Code NPT Total Depth (usR) P 21:00 - 23'.30 2.50 BOPSUR P 2330 - 0000 0.50 6/15/2019 00:00 - 00:30 0.50 0030 - 0300 2.50 BOPSUR P BOPSUR P RIGU P Page 26010 AFE No X3-019FG-C:(2,422,018.00) Rig Release: 6/24/2019 Phase Description of Operations PRE PERFORM BI -ANNUAL BOPS 7O 250/5000 PSI AS PER BP ANDAOGCC REGULATIONS. ALL RAMS TESTED ON RAM LOCKS TEST GAS ALARMS: PASS TEST WAIVED BY AOGCC REP LOU LAUBENSTEIN TEST 1: IRV, PACK -OFF, C9 BACKWARDS AND C10 BACKWARDS TO 3500 PSI - PASS TEST 2: BLINDS, BI, B4(5000#) -BLINDS FAILED MOVE TO TEST #3 TEST 3: ANNULAR 2-3/8'(3500#) THROUGH TP3, TVI, TV2-PASS TEST 4: UPPER 2-3/8" PIPE/SLIP, TIW#I, B1 8 B4 AND RI, BL1A (5000#) - PASS TEST 5: R2, CIS, BL2, TIW#2 (5000#) - PASS TEST 6: CI6, C11, BLi(5000#)-PASS TEST 7: C9, CIO, C7 (5000#) - PASS TEST 8: C5, C6, CS (5000#) - PASS TEST 9: CHOKE A, CHOKE C - PASS TEST 10: C1, C4, VBR's, TV1 (5000#) - PASS TEST 11: C2, C3, TV2, LOWER 2-3/8" PIPE/SLIP (5000#) PASS PERFORM DRAWDOWN TEST- PASS TEST 12: ANNULAR -3 -1/2"(3500#) -PASS 'TEST 13: VBR's-3-1/2"(5000#)-PASS TEST 14: C28 C3 -PASS TEST 15: C9, CIO TO 4500 PSI PASS REPAIR BLIND SHEARS AND SIMOPS INSTALL BHI FLOATS AND TEST TO 3500#. GOOD TEST TEST 16: RETEST BLIND SHEARS AND B3 (5000#) B3 INITIAL FAIL. CYCLE GREASE. PASS PRE - PULL TEST LUBRICATOR B ADAPTER FLANGE - PULL TEST PLUG (SEAL INTACT) - MU ADAPTER FLANGE AND DRILLING _ LUBRICATORS PRE PJSM, _ - PERFORM 250# 15000# TEST ON T1 PASS PRE PERFORM TEST 250#/5000#ON T2. PASS. PRE RIG DOWN TEST EQUIPMENT. - REVIEW PROCEDURE FOR PULL TWC I BULLHEAD -STAB INJECTOR WITH NOZZLE. LOAD COIL WITH 8.6 PPG DRILLING MUD - EVACUATE FLUID TO MASTER VALVE. VALVE CREW TAKE MEASUREMENTS Printed 7/82019 3:44.34PM **All depths reported In Drillers Depths" North America - ALASKA - BP Page Operation Summary Report Common Well Name: 15-27 AFE No Event Type: RE-ENTER- ONSHORE (RON) Start Date: 6/13/2019 End Date: 6/21/2019 X3-019FG-C: (2,422,018.00) Project: PBU Site: 15 RIGU P PRE PJSM, Rig Name/No.: CDR -2 Spud Date/Time: 1/20/1992 12:00:OOAM Rig Release: 6/24/2019 Rig Contractor: NABORS ALASKA DRILLING INC. BPUOI* USA00000945 Active datum: RT (060.35usft (above Mean Sea Level) PREPARATION FOR PRESSURE TEST. Date From - To Hrs Task Code NPT Total Depth Phase Description of Operations (hr) (usft) 03:00 - 08:00 5.00 RIGU P PRE PJSM, -PUBPV LUBRICATOR. PERFORM METHANOL PURGE TO TIGER TANK IN PREPARATION FOR PRESSURE TEST. -PERFORM PRESSURE TEST TO 3500# GOOD TEST. - ATTEMPT TO GRAB TWC. NO LUCK. '- PERFORM LTT BETWEEN MASTER AND SWAB TO 3500#. - BLOW DOWN LUBRICATOR. - PU THE PULLING LUBRICATOR AND INSPECT THE TOOL. i- FOUND A ROLLED SHOULDER THAT WOULDN'T ALLOW THE TOOL TO FUNCTION PROPERLY. - MU TOOL STAB ON AND PT THE OTS. - GOOD PT, OPEN M & S VALVES AND PULL TWC. - TWO IS PULLED WITH 2500 PSI UNDER TWO. - CLOSE M&S VALVE, LTT THEN PURGE THE LUBRICATOR WITH 10 BBL OF METHANOLTO 'THE TT. I- RD VC LUBRICATOR. 0800 - 12'.30 4.50 KILLW P PRE PJSM, - INSTALL NIGHT CAP AND PT 7O 3500# GOOD TEST. - PRESSURE UP TO 2500PSI WITH METHANOL BETWEEN MASTER AND SWAB. - OPEN MASTER VALVE. - PUMP 10 BBLS 6.6PPG OF NEAT METHANOL AT 1BPM WITH 2570PSI. - PUMP 290 BELS OF 140° 8APPG 1% SLICK KCLAT 5BPM WITH 2550 ICP. -AFTER 130 BELS AWAY PUMP PRESSURE AT 1000PSL -AFTER 230 BBLS AWAY PUMP PRESSURE AT 1300PS1. -AFTER 270 BBLS AWAY PUMP PRESSURE AT 1800PS1. - SWAP OVER TO HIGH -VIS PILLAND PUMP 44 BBLS. WITH 1850PSL - SWAP TO 8.6PPG MUD AND PUMP 174 BBLS AT 58PM WITH 1850PSI FINAL PRESSURE AT 1960PSI. - SHUT OFF PUMPS AND PRESSURE BLEEDS TO 200PSI IN 10 MINUTES. - PRESSURE DISIPATED TO 0 PSI -OPEN SWABAND PURGE LUBRICATOR TO TIGER TANK WITH 10 BBLS OF MUD. - LINE UP TO FLOW ACROSS THE TOP TO ESTABLISH A LOSS RATE IF ANY - NO LOSSES, FLOW CHECK WELL - GOOD NO FLOW - REMOVE NIGHT CAP, MU OTS TO THE INJECTOR, STAB INJECTOR, CLOSE THE SWAB AND PT THE OTS -GOOD PT, OPEN SWAB AND FLOW CHECK RIG ON HIGH -LINE POWER AT 11:00 HOURS. Printed 7/8/2019 3:44:34PM •"A8 depths reported in Drillers Depths" Printed 7/8/2019 3*44:34PM '•All depths reported in Drillers Depths" North America - ALASKA - BP Page 41< Operation Summary Report Common Well Name: 15-27 AFE No Event Type: RE-ENTER-ONSHORE (RON) Start Date: 6/13/2019 End Date. 6/21/2019 X3-019FG-C. (2,422,018.00 ) Project: PBU- _-- - Site: 15 Rig Name/No.: CDR-2 Spud Daternme: 1/20/1992 12:00 OOAM Rig Release: 6/24/2019 Rig Contractor: NABORS ALASKA DRILLING INC. BPUO1: USA00000945 Active datum: RT @60.35usft (above Mean Sea Level) Date From -To Hrs Task Code NPT Total Depth Phase Description or Operations _ (hr) (usft) 12:30 - 18:00 5.50 STWHIP P WEXIT MILL WINDOW OPS - PJSM TO MU THE MILLING BHA WHILE FLOW CHECKING WELL - GOOD NO FLOW, MU THE MILLING BHA - RIH WITH MILLING BHA, STOP AT 500' TO INSPECT PIPE, GOOD RIH - STOP AT 2500'& 7100' TO CHECK THE SADDLE CLAMPS - STOP AND PREP TO LOG TIE IN, OUT DENSITY STARTING TO DROP OFF, LINE UP TO TAKE RETURNS OUT TO THE TT - PURGE LUBRICATOR AS WELL - DENSITY AFTER LUBRICATOR PURGE STILL RUNNING 7.9 TO 8.2. '- LOG TIE IN WITH -12' CORRECTION. TAG - WHIPSTOCK 14402' DRY. - _--_ 18:00 - 19:30 1.50 STWHIP P 14402.00 ,WEXIT I ,DISCUSS WITH WSUPT.T. '- CONTINUE TO CIRCULATE BOTTOMS UP TO TIGER TANK - DENSITY SLOWLY INCREASING TO WHATS BEING PUMPED '- BRING BACK INSIDE. FINGERPRINT FLOWBACK. 1930 - 00'.00 4.50 STWHIP P 14,404.90 WEXIT MILL 3.80' WINDOW IN 4-1/2" LINER PER BAKER REP FROM 14400.4' MD TO 14404.90' QQ I � - 21 ID M e) ATE: 2.81 BPM IN, 2.80 BPM OUT - MUD WEIGHT: 8.70 PPG IN, 8.54 PPG OUT -DWOB: 0.9-3.8 KLBS -CIRC PRESSURE: 3478 PSI 6/16/2019 00:00 - 01:30 1,50 STWHIP P 14,406.60 WEXIT MILL 3.80" WINDOW IN 4-1/2" LINER PER BAKER REP FROM 14404.90' MD TO 14406.6' - RATE: 2.81 BPM IN, 2.82 BPM OUT - MUD WEIGHT: 8.64 PPG IN, 8.50 PPG OUT - DWOB: 1.4 KLBS - CIRC PRESSURE: 3478 PSI 01:30 - 05:00 3.50 STWHIP P 14,422.00 WEXIT MILL 3.80" WINDOW IN 4-1/2" LINER PER BAKER REP FROM 14406.6' - RATE: 2.69 BPM IN, 2.71 BPM OUT - MUD WEIGHT: 8.64 PPG IN, 8.50 PPG OUT - DWOB: 1.4- KLBS -CIRC PRESSURE: 3034 PSI - DROP RATE 0.1 BPM TO CURB SOME OF THE VIBRATION - APPEARS WE ARE OFF AT 14407' FULL TRAY LENGTH WOULD OF BEEN 12.3' SAMPLE SHOWING 10% FORMATION. -TIME MILL TO 14409'. WOB HAS FALLEN COMPLETELY OFF. MOTOR WORK HAS FALLEN OFF ALSO. - START WORKING ROP UP TO GET SOME WOB RESPONSE. - SAMPLE FROM 14409' IS 85% SAND Printed 7/8/2019 3*44:34PM '•All depths reported in Drillers Depths" I TF7JM:= CIW WEFLHEAD= FMC ACTUATOR= BAKERC KB. ELEV 67' REF B -EV = 60.35' BF. BEV = 33.99' KOP= 3810' Max Angle = 96'@ 12521' Datum MD= NA DatumTVD= 88001SS 91.5 D -19.124' 13-3/8' CSG, 68#, K-55 XO TO L-60 113' 13-3/8' CSG. 68#,L-80, D = 12.415' 14 3492' Minimum ID = 3.80" @ 11266' 4-1/2" HES XN NIPPLE 9-5/8' WHPSTOCK(D4/12/10) 1-1 381W 15-27A SAFETY NOTES: WELL ANGLE> 70'@12177'. •`•4-1/2" CHROME TBG••OR1G W ELL NOT SHOWN BELOW WHIPSTOCK - 14-12- TBG, 12.6#, 13CR-85 VAM TOP, .0152 bpf, ID= 3.958' 1 7- LNR, 26#, L-80 TCII, .0383 bpf, ID = 6.276' WHIPSTOCK w /RA PP TAG @ 14409'- SEE THE PDF N THE WELL RCS NFO FOLDER FOR DETAILS (0523/19) GAS LIFT MANDRELS STI PERFORATION SUMMARY I TVDDEV REF LOC: MWD on 05/16/10 I VLV I LATCH ANGLEATTOP FHiF: 33" @ 11462' DATE Note: Refer to Production DB for historical perf data SIZE SPF NTBNAL Opn/Sgz DATE 2-12' 6 11462 - 11472 O 02/05/18 2-12' 6 11484-11494 O 06/17/18 2-7/8' 6 12500- 12900 O 05/16/10 2-7/8' 6 13620- 14180 O 05/16/10 2-7/8' 6 14360 - 14720 01C 05116/10 15-27A SAFETY NOTES: WELL ANGLE> 70'@12177'. •`•4-1/2" CHROME TBG••OR1G W ELL NOT SHOWN BELOW WHIPSTOCK - 14-12- TBG, 12.6#, 13CR-85 VAM TOP, .0152 bpf, ID= 3.958' 1 7- LNR, 26#, L-80 TCII, .0383 bpf, ID = 6.276' WHIPSTOCK w /RA PP TAG @ 14409'- SEE THE PDF N THE WELL RCS NFO FOLDER FOR DETAILS (0523/19) GAS LIFT MANDRELS STI MD I TVDDEV TYPE I VLV I LATCH I PORT DATE 3 3549 3548 1 MMG Ok1V RK 0 05/19/19 2 7778 1 6126 64 KBG2 DMY BK 0 05/19/19 1 11096 7902 34 KBG2 DMY SK 0 05/18/10 1 14403' 1 16519-5/8' X 7' BKR ZXP LTP w/FLD(-LOCK HGR & TACK SLff1/E, D = 6.180' 1673' 1 58' X 7' BD( KR FLLOCK LNi HGR 113=6 .180' MILLOUT WINDOW (15-27A)3810'- 3827' S' 1-1.7-X4-1/2' HES TNT PKR, ID= 3.856' 196' 4-112' HES X NIP, ID= 3.813' 11266' 4-1/2' HES XN NPMLLED 3.80' (05/20/19) 11271' 7' X 5C ZXPN HRD-E LTP w/T®ACK SLV, )=420' 11279' 4-1/2-WLEG, ID=3.958- 11286' 7- X 5- BKR FLB(LOCK LNR —_ HGR D=4.220' \ �I 11297' I 5- X 4-1/2" XO. ID = 3.920' PRUDHOE BAY UNIT WELL: 15-27A PE RW No: =2100230 AR No: 50-029-22243-01-00 SM 22, Tl lN, R14E, 324' FNL & 58' FWL DATE REV BY COMMENTS DATE REV BY COMMENTS 02/15/92 ORIGINAL COMPLETION 06/05/19 JDM/JMD LLL XN NP, SEr WHIPSTOCK 05/19/10 MES SIDETRACK (15-27A) 07/09/19 JNUJMD ADO REF, BF, GOND & WS DOTH 06/18/18 KFW-MD ADPERFS (06/17/18) 1029/18 ZV/JMD RJLLED ISO RUG (10/25/18) 12/17/18 JMD MINOR CORRJEIaTIONS BP Exploration (Alaska) 0520/19 JPK/JMD GLV C/O (05/19/19) THE STATE °fALASKA GOVERNOR MIKE DUNLEAVY Sean Mclauhglin Engineering Team Lead BP Exploration (Alaska), Inc. PO Box 196612 Anchorage, AK 99519-6612 Re: Prudhoe Bay Field, Prudhoe Bay Oil Pool, PBU 15-27A Permit to Drill Number: 210-023 Sundry Number: 319-140 Dear Mr. Mclaughlin: Alaska Oil and Gas Conservation Commission 333 West Seventh Avenue Anchorage, Alaska 99501-3572 Main: 907.279.1433 Fax: 907.276.7542 w .00gcc.alaska.gov Enclosed is the approved application for the sundry approval relating to the above referenced well. Please note the conditions of approval set out in the enclosed form. As provided in AS 31.05.080, within 20 days after written notice of this decision, or such further time as the AOGCC grants for good cause shown, a person affected by it may file with the AOGCC an application for reconsideration. A request for reconsideration is considered timely if it is received by 4:30 PM on the 23rd day following the date of this letter, or the next working day if the 23rd day falls on a holiday or weekend. Sincerely, 011-�� Daniel T. Seamount, Jr. Commissioner d n DATED this Z-- day of April, 2019. RBDMS-Yz"APR 0 2 2019 STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION APPLICATION FOR SUNDRY APPROVALS 20 AAC 25.280 RECEIVED MAR 2 1 2019 1. Type of Request: Abandon ❑ Plug Perforations ❑ Fracture Stimulate ❑ Repair Well ❑ Opera Suspend ❑ Perforate ❑ Other Stimulate ❑ Pull Tubing ❑ Change Approve Program ❑ Plug for Redrill 0 • Perforate New Pool ❑ Re-enter Susp Well ❑ Alter Casing ❑ Other ❑ 2. Operator Name: BP Exploration (Alaska), Inc 4. Current Well Class: Exploratory ❑ Development 0• 5. Permit to Drill Number. 210-023 3, Address: P.O. Box 196612 Anchorage, AK 99519-8612 Stratigrephic ❑ Service ❑ S. API Number: 50-029-22243-01-00 ' 7. If perforating: 8. Well Name and Number: What Regulation or Conservation Order governs well spacing in this pool? Will planned perforations require a sparing exception? Yes ❑ No 0 PBU 16-27A 9. Property Designation (Lease Number):10. Field/Pools: ADL 028306 & 028303 PRUDHOE BAY. PRUDHOE OIL 11. PRESENT WELL CONDITION SUMMARY Total Depth MD (ft): Total Depth TVD(ft) : Effective Depth MD: Effective Depth TVD: MPSP (psi): Plugs (MD): Junk (MD): 14870 8732 11903 8560 2500 11903 None Casing Length Sim MD TVD Burst Collapse Structural Conductor 80 20" 29-109 29-109 1490 470 Surface 3457 13-3/8" 29-3486 29-3485 3450 / 4930 1950 / 2270 Intermediate 1 3784 9-5/8" 26-3810 26- 389 6870 4760 Liner 7788 7" 3658-11446 3657-82191 7240 5410 Liner 3591 4-1/2" 11271 - 14862 8047-8732 1 8430 1 7500 Perforation Depth MD (ft): Perforation Depth TVD (ft): Tubing Size: Tubing Grade: Tubing MD (ft): 11462- 14720 8204-8729 4-1/2" 12.6# 13Cr85 24-11279 Packers and SSSV Type: 41/2" HES TNT Penn Pecker Packers and SSSV MD (ft) and TVD (ft): 11165/7959 No SSSV Installed No SSSV Installed 12. Attachments: Proposal Summary 0 Wellbore Schematic 0 13. Well Class after proposed work: Detailed Operations Program ❑ BOP Sketch 0 Exploratory ❑ Stratigraphic ❑ Development 0 Service ❑ 14. Estimated Date for Commencing Operations: April 1, 2019 15. Well Status after proposed work: Oil ❑ WINJ ❑ WDSPL ❑ Suspended 0 ' 16. Verbal Approval: Date: GAS ❑ WAG ❑ GSTOR ❑ SPLUG ❑ Commission Representative: GINJ ❑ Op Shutdown ❑ Abandoned ❑ 17. 1 hereby certify that the foregoing is true and the procedure approved herein will not Contact Name: Hartley, Josephine be deviated from without prior written approval. Contact Email: Josephine. Hartleyabp.com Authorized Name: Mclaughlin, Sean M Contact Phone: +1 9075644570 Authorized Title: Engineeng Team Lead - CTD & RWO Authorized Signature: Date: 3 Z6 I COMMISSION USE OIQLY Conditions of approval: Notify Commission so that a representative may witness Sundry Number: Plug Integrity ❑ SOP Test GK' Mechanical Integrity Test ❑ Location Clearance ❑ Other:®p6�t5 • 1 O 3$�Q't9�s( Post Initial Injection MIT Req'd? Yes ❑ No ❑ Spacing Exception Required? Yes ❑ No M/ Subsequent Form Required: APP/ROVED BYTHE f� 2-1 Approved by: COMMISSIONER COMMISSION Date: 17 MI ORIGINAL BD�wsAV APR o ra 2019 ,/5 ►f1a, x � 9 MN•iL',y�il-,QRI� ubmit Form and Form 10-403 Revised 04/2017 Approved application is valid for 12 months from the date of approval. Attachments in Duplicate To: Alaska Oil & Gas Conservation Commission From: Josi Hartley' p CTD Engineer Date: March 20, 2019 Re: 15-27A Sundry Approval Request Sundry approval is requested to plug off the 15-27A production as part of the drilling and completing the proposed 15-27B coiled tubing sidetrack. History of 15-27A: 15-27A was drilled and completed with 1300' of Zone 1 perforations in 2010. The sidetrack performed well initially, however from 2010 to 2016 exhibited steady GD decline and was shut in for high GOR at the end of 2016. 15-27A was also used in a Sag Reservoir potential project in 2017, however the project proved to be uneconomic due to high local Sag GOR. No further wellwork options remain, and this wellbore has been released as a donor wellbore for a Coil Sidetrack. _ Cwcc4, 60A 4o 7v owe 90 ACF/W Proposed plan for 15-2713: The coil sidetrack 15-27B will be a 2136' lateral accessing a Fury target located near the northern edge of DS -15. The well will utilize an open hole Automated Inflow Control Device (AICD) completion to manage the high gas volumes that are expected from a GD well. The CST is scheduled to be drilled on or around June 1", 2019. During pre -rig work it is proposed to set a 4-1/2" Monobore whipstock with TOWS at -14,400' MD in the 4-1/2" production liner. The rig will move in, test BOPE and kill the well. A 3.80" window+ 10' of rathole will be milled. The well will kick off in Zone 1, geo steer low in section and potentially dip into the BSAD. The proposed sidetrack will be completed with 2-3/8" x 2-7/8" x 3-1/2" 13CR liner with an AICD and swell packer completion. This Sundry covers Plugging the existing 15-27A production via the swell Packers in the completion with a liner top packer to be installed and tested post -rig (alternate Dlug Placement Per 20 AAC 25.1120)). The following describes the work planned and is submitted as an attachment to Form 10-403. A schematic diagram of the current well and proposed sidetrack is attached for reference. Pre -Rig Work (scheduled to begin April in, 2019) 1. SL Dummy GLMs. 2. C Mill XN. 3. C Drift for Whipstock. GR/CCL. Set Whipstock. Work (scheduled to begin June 1", 21 1. MIRU and test BOPE 250 Dsi low 2500 psi). — Z 2. Mill 3.80" Window+ 10' of rathole 3. Drill production section: 4.25" OH, 2136' (12 deg US in lateral planned). 4. Run 3-1/2" x 2-7/8" x 2-3/8" 13Cr liner with Swell Packers and AICDs to TD. 5. Freeze Protect to 2200' MD. 6. Close in tree, RDMO. * ADoroved alternate glue Dlacement per 20 AAC 25.112(1) Post -Rig Work: p-Vb 1. V: Pull TWC, Tree work as needed. 2. SL: Drift and Set LTP. Set and test LTP. Set KO Gas Lift Design for potential PBGL. 3. FB: PT LTP. 4. Ci: RPM. N2 Lift. 5. T: Test well. Josi Hartley CC: Well File CTD Engineer Joe Lastufka 564-4570 i TREE_ cW WB-LHEAD= FMC ACRATOR= BAKERC KB. ELEV = 67' BF. ELEV = 7 KOP= 3810' Max Angle = 96" @ 12521' Datum MD= NA DatumlVD= 88W SS 15-27A 5.412" CHROMETBG'•NOTES: WELL OPoGWELL NOT SHOWN I II BELOW WHIPSTOCK"' c I 20" GOND, 91.5 #, FF40, D= 19.124' Minimum ID = 3.725" @ 11266' 4-1/2" HES XN NIPPLE 35/8"WHIPSTOCK (04/12/10) 381W D = 8.681' 4-1/2" TBG, 12.6#, 13CR-85 VAM TOP, .0152 bpf, D= 3.958' 1-1 11279' 1 7- LNR 26#. L-80 TCL.0383 bof. D = 6.276' H 11446' I 12.6#, L-80 DT -K .0152 bpf, D = 3.958' GAS LIFT MANDRELS ST PERFORATION SUMMARY TVD OEV REF LOG: MND on 05/16/10 VLV LATCH ANGLEAT TOP F$2F: 33' @ 11467 DATE Note: Refer to Production [B for tistorical pert data SIZE SPE NTB2VAL OpNSgz DATE 2-112" 6 11462 - 11472 O 02105118 2-112' 6 11484 -11494 O 06/17118 2-7/8' 6 12500- 12900 C 05/16/10 2-718" 6 13620-14180 C 0516/10 2-7/8" 6 14360 - 14720 C 05/16/10 4-1/2" TBG, 12.6#, 13CR-85 VAM TOP, .0152 bpf, D= 3.958' 1-1 11279' 1 7- LNR 26#. L-80 TCL.0383 bof. D = 6.276' H 11446' I 12.6#, L-80 DT -K .0152 bpf, D = 3.958' GAS LIFT MANDRELS ST MD TVD OEV TYPE VLV LATCH FORE DATE 3 3549 3548 1 MMG DOME RK 16 05/23/10 2 7778 6126 64 KBG2 SO BK 20 05/23/10 1 11096 7902 34 KBG2 DW BK 0 05/18/10 365WJ�9-5/8' X 7' BKR ZXP LTP w /TERACK SL\ D = 6.19• 3673' 9-5/8' X 7' BKR FLIXLOCK LPF2 HGR, D = 6.180' MLLOUTWFDOW(18-27A) 3810'-382T HESX NP. D=3.813' 11266- 4-1/2'HES XN NP. ID=3.725' 11271' 7" X 5" ZXRN HR0.E LTPw frEBACK SLV, D = 420' 11279' 4-12" WLEG, D= 3.958' 11286' 7" X 5' BKR PLD(LOCK LNi HGR, D = 4220' DATE REV BY COMMENTS DATE REV BY COMMS NTS 02/15192 OFIGINALCOMPLETION 06/1818 KFMJMD ADP8 FS(06/17/18) 0511910 MPS SIOETRACK(15.27A) 05122/10 PJC DRLG HO CORRECTDNS 05125/10 WECJPJC GLV CIO (0523/10) 08/09/10 MJM) DR -G DRAFT OORFlLTIDNS 0211218 BTNJMD SET ISO RAG & ADPERFS 11903' I RGO t1G( 18) PRUDHOE BAY (AIT WELL: 15-27A PERMIT No: 2100230 API No: 500232224301-00 T11K R14F 324' FPL & 58' FWL I TREE= YYELLHE 1D = FMC ACTUATOR= 10 KB. ALV = 67, BF. ELEV = 7 KOP= 3610 Max Angle= _°@_' Datum MD= _ Da61m TVD= 8800'SS PROPOSED REV 2 #, H40, 19.124" 1 110' f 13-3/8" CSG, 68#, K-55 XO TO L-80 —j 1113- 13-3W CSG, 68#,L-80, D = 12.415" 361W Minimum ID = 3.726" @ 11266' 4-1/2" HES XN NIPPLE �Wl W{, 419, L-W,U=e.ba1 4-12' TBG, 12.69, 13CR-85 VAM TOP, .0152 bpf, D = 3.958' 145KB LTPI 14-12" BKR WHPSTOCK I / / 1 I —3810' J� 15-27B SAFETY NOTES: W ELL ANGLE> 70° MAX DLS: @ '.'""4-12" CHROME TBG& LNR'' 2234' 4-12• HUS XNP, D = 3.813" 1.0152 bpf, D = 3-958- 12-718" LNFZ, 6.5#, L-80, bpf, D=_' 15175' 2-3/8" LNR _#, L-80, . bpf, 9) = - I PBTD I 16510' GAS LFT MANDRELS i 107961 7902 1 34 I KBG2 I DSO MY I BK I 00 105/181101 -® 9-5/8' X 7' BKR ZXP LTPw /FLEX -LOCK HGR & TIEBACK SLffI/L D = 6.180• 3673' 9-5/8" X 7" BKR FLEXLOCK LNR HGR, 0=U80" MLLOUT WINDOW (15-27A) 3810' - 3827' 11131' 4-12' HES X NP. D = 3.813" 11166- h 7" X 4-12- FES TNT PKIZ U = 11196' 4-12• HES X NP, D = 3.813• 11266' H 4-1/2" FES XN NP. D = 3.725" 112-1 7" X 5" ZXPN HRD-E LTP w BKR FLEX -LOCK HGR & TIEBACK SLV, D = 4.2G- 15'X .20• 15"X 4-12" XO. D = 3.920" 1 -1 11310' rj3.10-0=LOYSLV,U=3.00- 31/2' XNP, D=2.813' 14390' 3-12" X 2-7/8" XO, D = MLLOUT WINDOW (15-27B) 14400' 6176' 2a/8• x 2-3/8• xo, D = 2-318" AICD JOINT. ID= " NO DEPRi NO. AICD 10 02/15192 9 06119110 8 SIDETRACK(15-27A) 7 CTDST(15-27B) 6 12117118 JAD 5 01/15/19 4 BOLT PROPOSED REV 1 3 2 1 DATE PSV BY 0OR M34TS DATE REV BY COMYBJfS 02/15192 ORIGINAL COMPLETION 06119110 N76 SIDETRACK(15-27A) CTDST(15-27B) 12117118 JAD BUILT PROPOS® 01/15/19 ZB/JMD BOLT PROPOSED REV 1 PRIAFDE BAY LW WELL 15-278 PHiMT N7: API N0: 50.029-22243-01-01 SEC22, T11N, R14F, 324' FU- & 58' PWL BP Exploration (Alaska) Well Bighole CDR2-AC 4 Ram BOP Schematic Date 21 -Nov -17 Quick Test Sub to Otis -1.1 f[ Top of 7" Otis 0.0 ft _._. _._._.—._ COR2 Rig's Drip Pan Distances from top of riser Excluding quick -test sub -- 1-1116" Sk Flange X 7" Otis Box Top of Annular 6.0 ft ydril 71/76 Top of Annular Element 6.7k Annular Bottom Annular 8.0 ft CL Blind/Shears 9.3 ft CL 2-3/8" Pipe/Slips 10.1 ftNNH B1 B2 B3 B4 Choke Line Kill Line CL 2-3/8" x 3-1/2" VBRs CL 2-3/8" Pipe/Slips 13.4 ft CL of Top Swab 16.0 ftAll � Swab Test Pump Hose i T1 � T2 CL of Flow Cross 17.4 ft �'-- Master CL of Master 18.8 ft LDS O IA OA LDS O Ground Level Sundry Application Plug for Re -drill Wells Work Flow This process is used to identify wells that are suspended for a very short time prior to being re - drilled. Those wells that are not re -drilled immediately are identified every 6 months and assigned a current status of "Suspended." Task Res onsible initial reviewer will check to ensure that the "Plug for Redrill" box Geologist e upper left corner of Form 10-403 is checked. If the "Abandon" or pend" boxes are also checked, cross out that erroneous entry and al it on both copies of the Form 10-403 (AOGCC's and operator's es). e "Abandon" box is checked in Box 15 (Well Status after proposed Finitial Geologist ) the initial reviewer will cross out that erroneous entry and initialtherV both copies of the Form 10-403 (AOGCC's and operator's copies). ad, check the "Suspended" box and initial that change. Drilling Engineer drilling engin6ers will serve as quality control for steps 1 and 2. (QC)n the Stat Tech receives a Form 10-403 with a check in the "Plug Stat Tech edrill" box, they will enter the Typ_Work code "IPBRD" into the ' History tab for the well in RBDMS. This code automatically generates a comment in the well history that states "Intent: Plug for Redrill." tat Tech receives any Form 10-407, they will check the Stat Tech in RBDMS for the "Intent: Plug for Redrill" code (IPBRD). THistory d there is no evidence that a subsequent re -drill has been ED, the Stat Tech will assign a status of SUSPENDED to e in RBDMS no matter what status is listed on the 10-407. ch will also change the status on the 10-407 form to SUSPENDED, and date and initial this change. If the Stat Tech does not see the "Intent: Plug for Redrill" comment or code, they will enter the status listed on the Form 10-407 into RBDMS. 5 When the Form 10-407 for the redrill is received, the Stat Tech will Stat Tech change the original well's status from SUSPENDED to ABANDONED. 6 The first week of every January and July, the Stat Tech and one of the Stat Tech Geologists will check the "Well by Type Work Outstanding" user query Geologist in RBDMS to ensure that all of the Plug for Redrill wells have been handled properly. At this same time, they will also review the list of suspended wells for accuracy. BP EXPLORATION (ALASKA) INC., PRUDHOE BAY UNIT 15-27A (210-023) PRUDHOE BAY, PRUDHOE OIL Monthly Production Rates 10,000,000 1,000,000 L C O C 100,000 u o 10,000 O O w o m a O LL 0 1,000 u Z 3 v v M 100 0 0 L F 10 Cum. Prod Oil (bbis Cum. Prod Water (bbls): 3,640 Cum. Prod Gas (m —'-----vim• ■ .. .L 1 - Jan -2010 Jan -2015 A Produced Gas (MCFM) a GOR — Produced Water (BOPM) — Produced Oil (BOPM) 10,000,000 m 1,000,000 H 100,000 m 3 0 3 s 10,000 0 w m 1,000 0 d m 100 ro 0 10 s - 1 Jan -2020 SPREADSHEET _Prod -Inject _Cu Nes_W ell_V119_2100230_PBU_15-27A_20190326.xlsx 3/26/2019 RECD IVSD STATE OF ALASKA . 4111) ALASKA OIL AND GAS CONSERVATION COM ON REPORT OF SUNDRY WELL OPERA S MAY 00 2 2018 1. Operations Performed Abandon 0 Plug Perforations 0 Fracture Stimulate ❑ Pull Tubing 0 Operatio " lu ( C ❑ Suspend 0 Perforate 0 Other Stimulate 0 Alter Casing 0 Change Approved rogram Plug for Redrill 0 Perforate New Pool 0 Repair Well 0 Re-enter Susp Well 0 Other:Set WFD ISO Plug 0 2. Operator Name: BP Exploration(Alaska),Inc 4. Well Class Before Work 5. Permit to Drill Number: 210-023 3. Address: P.O.Box 196612 Anchorage, Development 0 Exploratory 0 AK 99519-6612 Stratigraphic 0 Service ❑ 6. API Number: 50-029-22243-01-00', 7. Property Designation(Lease Number): ADL 028306&028303 8. Well Name and Number: PBU 15-27A 9. Logs(List logs and submit electronic and printed data per 20AAC25.071): 10. Field/Pools: PRUDHOE BAY.PRUDHOE OIL 11.Present Well Condition Summary: Total Depth: measured 14870 feet Plugs measured 11903 feet true vertical 8732 feet Junk measured None feet Effective Depth: measured 11903 feet Packer measured 11165 feet true vertical 8560 feet Packer true vertical 7960 feet Casing: Length: Size: MD: TVD: Burst: Collapse: Structural Conductor 80 20" 29-109 29-109 1490 470 Surface 3457 13-3/8" 28-3485 28-3485 3450/5020 1950/2260 Intermediate 3784 9-5/8" 26-3810 26-3809 6870 4760 Liner 7788 7" 3658-11446 3657-8191 7240 5410 Liner 3591 4-1/2" 11271-14862 8048-8732 8430 7500 Perforation Depth: Measured depth: 11462-14720 feet SCANNED JUN 1 12018 True vertical depth: 8204-8729 feet Tubing(size,grade,measured and true vertical depth) 4-1/2"12.6#13Cr85 24-11279 24-8054 Packers and SSSV(type,measured and 4-1/2"HES TNT Perm Packer 11165 7960 true vertical depth) No SSSV Installed 12.Stimulation or cement squeeze summary: Intervals treated(measured): Treatment descriptions including volumes used and final pressure: 13. Representative Daily Average Production or Injection Data Oil-Bbl Gas-Mcf Water-Bbl Casing Pressure Tubing Pressure Prior to well operation: 498 41499 20 0 1670 Subsequent to operation: No Test Available 20 0 14.Attachments:(required per 20 Anc 25.070.25.071,&25.283) 15.Well Class after work: Daily Report of Well Operations 0 Exploratory 0 Development 0 Service 0 Stratigraphic 0 Copies of Logs and Surveys Run 0 16.Well Status after work: Oil 0 Gas ❑ WDSPL 0 Printed and Electronic Fracture Stimulation Data 0 GSTOR ❑ WINJ ❑ WAG 0 GINJ 0 SUSP 0 SPLUG 0 17.I hereby certify that the foregoing is true and correct to the best of my knowledge. Sundry Number or N/A if C.O.Exempt: N/A Authorized Name: Meixueiro,Pauling Contact Name: Meixueiro,Pauline Authorized Title: Production Engineer- Contact Email: paulina.meixueiroabp.com Authorized Signature: _pc, ,_ ,„_r, 71 Date: .9/3.0//g Contact Phone: +1 907 564 5971 Form 10-404 Revised 04/2017 1/71— &L to` 1(/ ` BDMS MAY 0 3 201$ Submit Original Only , •11/ ' • • • Alaska Oil and Gas Conservation Commission 333 West Seventh Avenue Anchorage, AK 99501-3572 RE: BP Exploration (Alaska), Inc. Report Of Sundry Well Operations (10-404) May 1, 2018 To Whom it May Concern: Attached please find the Report Of Sundry Well Operations for Plug Perforations (ISO Plug) and Perforate for Well PBU 15-27A, PTD #210-023. Sincerely, BP Exploration (Alaska) Inc. P.O. Box 196612 Anchorage, AK 99519-6612 Attachment: Form 10-404 BP Exploration (Alaska), Inc. P.O. Box 196612 Anchorage,AK 99519-6612 • • Daily Report of Well Operations PBU 15-27A ACTIVITYDATE SUMMARY ***WELL S/I ON ARRIVAL***(profile modification) DRIFTED TBG W/10'x 2-1/2"DUMMY GUN, 3.70"WRP DRIFT&SAMPLE BAILER.(no sample) TOOLS DEVIATED OUT @ 12,234' SLM.(no issues) 1/29/2018 ***WELL S/I ON DEPARTURE, DSO NOTIFIED OF WELL STATUS*** ***WELL S/I ON ARRIVAL***(SLB E-LINE-PLUG&PERF) INITIAL T/I/O=2150/1350NAC RU/PT. LRS PUMP L&K. RUN 1 -RIH W/4-1/2"WFT 2 TRIP RETRIEVAL ISO PLUG. PLUG SETTING DEPTH ME= 11910', CCL TO MID ELEMENT= 13', CCL STOP DEPTH = 11897'. TOP OF ISO PLUG 11,903' RUN 2-RIH W/10'X 2-1/2" POWERJET OMEGA. PERFORATED INTERVAL= 11462'-11472'. CCL TO TOP SHOT=3.25', CCL STOP DEPTH= 11458.75'. RUNS TIED INTO SCHLUMBERGER MEASURED DEPTH LOG DATED: 14-MAY-2010. RDMO. FINAL T/I/O=300/250NAC 2/5/2018 ***WELL S/I ON DEPARTURE*** T/I/O=2440/310Nac Temp=S/I Assist E-Line w/Load&Kill(PROFILE MODIFICATION) Pumped 2 bbls 60/40 spear followed with 275 bbls crude down TBG. E/L in control of well at LRS departure. 2/5/2018 IA/OA=OTG. T/I/0=460/400/0. (LRS Unit 72-Troubleshoot Formation Injectivity) Pumped into Tbg.W/10 bbls neat methanol, 9 bbls crude. Tbg taking fluid @ 0.1 BPM @ 2950 psi. Load IA at max rate w/268 bbls crude. Slowed to 1 BPM loaded Tbg w. 178 bbls crude through S.O. taking returns down FL. Establish—0.4 bpm/1.68 gpm injectivity pumping down IA to formation w/ 1.2 bbls crude for 30 min injectivity test. Bled IA to 400 psi. Swap over to Tubing and establish 0.03 bpm/1.26 gpm injectivity pumping down Tubing w/0.9 bbls crude for 30 min injectiivty test to prove SO integrity. Continued down Tbg to get FP volume down Tbg since taking returns up tbg and out FL. Got 7 bbls total down Tbg for FP. 4/13/2018 ***Job Cant to 04-14-2018 WSR*** ***Job Cont from 04-13-2018 WSR*** (LRS Unit 72-Troubleshoot Formation Injectivity) Pumped 7 bbls(14 bbls total)crude down Tbg for FP. Freeze Protect Flowline w/5 bbls 60/40 meth and 73 bbls crude. Pressured up FL to 1500 psi w/8 bbls crude. Pumped an additional 24 bbls(38 total)crude down Tbg for FP. Tags hung,AFE Sign hung on master 4/14/2018 FWHP=2000/90/0 Fluids Summary Bbls Type 2 Diesel 17 60/40 Methanol 862 Crude TREE= CM/ ry NOTES: __ ACIUAT R FMC III 15-27A **` 41 R«CHROME T®G`**ORIG WELL NOT SHOWN ACTtEATOR- BAK9�C KB.BEV= 67' ' BELOW WHIPSTOCK`** BE ... =O/ KOP= 3s1a' 20"COW, -1 11(1 Max Angle= 96"Q 12521' - •F44 2234' --I4-1/7 HES X NP,D=3.813" Datum MD= NA D=19.124" Datum TVD= 8800'SS 13-3/8"CSG,68#,K-55 XO TO L-80 -1 113' GAS LFT MANDRELS ST MD TVD DEV TYPE VLV LATCH PORT DATE 3 3549 3548 1 MAG DOME RK 16 05/23110 13-3/8"CSG,68#,L-80,D=12.415' H 3510' A 2 7778 6126 64 KBG2 SO BK 20 05/23/10 1 11096 7902 34 KBG2 DMY BK 0 05/18110 Minimum ID =3.725"@ 11266' , 3658' -j9-5/8"x 7"BKR ZXP LTP w/TIEBACK SLV,' 4-1/2" HES XN NIPPLEIli D=6.19' 3673' -J9-5/8'X 7"BKR FLB LOCK LNR HGR, D=6.180" 9-5/8"WHIPSTOCK(04/12/10) -{ 3810' MLLOUT WWOW(15-27A) 3810'-3827' 9-5/8"CSG,47#,L-80,ID=8.681" -I 8620' 11131' 14 112" HES X Ni?D=3.813" II11165' H7"X 4-1/2"HES TNT PKR,D=3.856" PERFORATION SUMMARY MVV ,�� REF LOG: Don 05/16/10 ti , ANGLE AT TOP PERF:33"Q 11462' 11196' -j 4-1/2'HES X NP,D=3.813' Note:Refer to Production DB for historical perf data SIZE SW HIERVAL Opn/Sqz DATE 11266' H4-1/2"HES XN NP,D=3.725" 2-1/2" 6 11462-11472 0 02/05/18 2-7/8' 6 12500-12900 C 05/16/10 11271' -7"X 5"ZXPN HRD-E LIP w/TEE BACK 2-7/8' 6 13620-14180 C 05/16/10 2-7/8' 6 14360-14720 C 05/16/10 SLV,D=4.20' li..‘ 11279' H4-1/2"wVLEG,ID=3.956" 11288' 7'x 5"BKR FLEXLOCK LNR 4-1/2"TBG,12.6#,13CR-85 VAM TOP,.0152 bpf,D=3.958" - 11279' HGR,D=4.220" 1129T --15"X 4-1/2"XO,D=3.920" XT"LNR 26#,L-80 TDB,.0383 bpf,D 11903' -4-1/2'2 TRP RETREVAL=6.27fi" 11446' / WVFD ISO PLUG(02/05/18) ii , ii , IIID H 14773' ,.4 4-1/2"LNR,12.6#,L-80 BT-M,.0152 bpf,D=3.958' -I 14862' DATE REV BY COMMENTS DATE REV BY (X*J UJTS PRIDHOE BAY INT 02/15/92 ORIGINAL COM PLETTON WELL: 15-27A 05/19/10 N7E3 SIDETRACK(15-27A) PBiMT No:"2100230 05/22/10 PJC DRLG IID CORRECTIONS AR No: 50-029-22243-01-00 05/25/10 WEC/PJC GLV GO(05/23/10) SEC 22,T11N,R14E,324'FNL.&58'FWL 08/09/10 JT/EMD DRLG DRAFT CORRECTIONS BP Exploration(Alaska) 02/12/18 BTWJM) SET ISO PLUG&ADFE RFS DATA SUBMITTAL COMPLIANCE REPORT 10/24/2011 Permit to Drill 2100230 Well Name /No. PRUDHOE BAY UNIT 15 -27A Operator BP EXPLORATION (ALASKA) INC API No. 50- 029 - 22243 -01 -00 MD 14870 TVD 8732 Completion Date 5/19/2010 Completion Status 1 -OIL Current Status 1 -OIL UI REQUIRED INFORMATION Mud Log No Samples No Directional Survey del — — DATA INFORMATION Types Electric or Other Logs Run: DIR / GR / RES, DIR / GR / RES / DENS / NEU (data taken from Logs Portion of Master Well Data Maint Well Log Information: • Log/ Electr Data Digital Dataset Log Log Run Interval OH / Tye Med /Frmt Number Name Scale Media No Start Stop CH Received Comments * D C Lis 19992�Induction /Resistivity 3539 14869 Open 8/11/2010 OH LIS & PB 1(3539' to 12269') GR, ROP, FET, RPX, RPM, RPD, RAM, DRHO, NPHI og Induction /Resistivity 25 Blu 12270 14885 Open 8/11/2010 MD Vision Service og Induction /Resistivity 2 Blu 12270 14885 Open 8/11/2010 TVD Vision Service og Induction /Resistivity 25 Blu 3550 12230 Open 8/11/2010 PB1 MD Vision Service L g Induction /Resistivity 2 Blu 3550 12230 Open 8/11/2010 PB1 TVD Vision Service ED C Directional Survey 0 14870 Open pt Directional Survey 0 14870 Open ED C Directional Survey 0 12270 Open PB1 pt Directional Survey 0 12270 Open PB1 • Well Cores /Samples Information: Sample Interval Set Name Start Stop Sent Received Number Comments ADDITIONAL INFORMATION Well Cored? Y / t� Daily History Received? N Chips Received? T`f* • Formation Tops C N Analysis - Y-L.U. Received? Comments: DATA SUBMITTAL COMPLIANCE REPORT 10/24/2011 Permit to Drill 2100230 Well Name /No. PRUDHOE BAY UNIT 15 -27A Operator BP EXPLORATION (ALASKA) INC API No. 50- 029 - 22243 -01 -00 MD 14870 TVD 8732 Completion Date 5/19/2010 Completion Status 1 -OIL Current Status 1 -OIL UIC N Compliance Reviewed By: Date: ( lJtk,__A.A 1 • ■ 08/06/10 Schhenherger NO. 5580 Alaska Data & Consulting Services Company: State of Alaska 2525 Gambell Street, Suite 400 Alaska Oil & Gas Cons Comm Anchorage, AK 99503 -2838 Attn: Christine Mahnken ATTN: Beth 333 West 7th Ave, Suite 100 Anchorage, AK 99501 Well Job # Log Description Date BL Color CD 1- 27/P -20 AVKP -00085 RST / $ 3 - DD # 06/06/10 1 ' 94•1c 1 01 -01C BB6M -00016 RST 4- - 06/09/10 1 J 9g 1 11 -28A AYKP -00081 RST # �. 05/31/10 1 / -q� 1 • 05 -25C BCUE -00021 MCNL d 06/02/10 1 - 1 Y -01B BAUJ -00024 MCNL _ MT 05/25/10 1 "T.-Zr 1 - 14 -07 BBKA -00035 RST - _ 06/06/10 1 L' 1 MPS -37 BCRC -00026 RST - 0 — . 5 06/21/10 1 " ■ Oa 1 15-27A 10AKA0067 OH MWD/LWD EDIT 15- 27APB1 10AKA0067 OH MWD/I.WD EDIT V 3 b C 05/14/10 2 i mg i PLEASE ACKNOWLEDGE RECEIPT BY SIGNING AND RETURNING ONE COPY EACH TO: BP Exploration (Alaska) Inc. Alaska Data & Consulting Services • Petrotechnical Data Center LR2 -1 2525 Gambell Street, Suite 400 900 E. Benson Blvd. Anchorage, AK 99503-2839 ig txa NA 1 . 7olo .. Pa Oil PI ci CDmm ° . , 9- • STATE OF ALASKA 1 J ALASKA OIL AND GAS CONSERVATION COMMISSION WELL COMPLETION OR RECOMPLETION REPORT AND LOG 1 a. Well Status: C. Oil ❑ Gas ❑ SPLUG ❑ Other ❑ Abandoned ❑ Suspended 1 b. Well Class: 2OAAC 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. 5/19/2010 210 - 023 3. Address: 6. Date Spudded: 13. API Number: P.O. Box 196612, Anchorage, Alaska 99519 - 6612 4/14/2010 50 029 - 22243 - 01 - 00 4a. Location of Well (Governmental Section): 7. Date T.D. Reached: 14. Well Name and Number: Surface: 5/14/2010 PBU 15 -27A 324' FNL, 58' FWL, SEC. 22, T11 N, R14E, UM 8. KB (ft above MSL): 60.35' 15. Field / Pool( s ) Top of Productive Horizon: 478' FSL, 1202' FWL, SEC. 10, T11 N, R14E, UM GL (ft above MSL): 32.2' Prudhoe Bay Field / Prudhoe Bay Total Depth: 9. Plug Back Depth (MD +TVD): Oil Pool 2887' FSL, 729' FWL, SEC. 10, T11 N, R14E, UM 14773' 8730' 4b. Location of Well (State Base Plane Coordinates, NAD 27): 10. Total Depth (MD +TVD): 16. Property Designation: Surface: x - 675968 y - 5961157 Zone ASP4 14870' 8732' ADL 028306 & 028303 TPI: x - 676956 y - 5967264 Zone- ASP4 11. SSSV Depth (MD +TVD): 17. Land Use Permit: Total Depth: x- 676422 y- 5969662 Zone- ASP4 None 18. Directional Survey: El Yes ❑ No 19. Water depth, if offshore: 20. Thickness of Permafrost (TVD): (Submit electronic and printed information per 20 AAC 25.050) N/A ft MSL 1900' (Approx.) 21. Logs Obtained (List all logs here and submit electronic and printed information per 20 AAC 25.071): 22. Re -Drill /Lateral Top Window MD/TVD: DIR / GR / RES, DIR / GR / RES / DENS / NEU 3810' 3809' 23. CASING, LINER AND CEMENTING RECORD SETTING DEPTH MD SETTING DEPTH TVD HOLE AMOUNT CASING WT. PER FT. GRADE ToP BOTTOM TOP BOTTOM SIZE CEMENTING RECORD PULLED 20" 94.5# H-40 Surface 110' Surface 110' , 30" 232 cu ft Coldset II 13 -3/8" 68# L -80 Surface 3492' Surface 3491' 16" ,2584 cu ft Coldset III. 460 cu ft class 'G' 9 -5/8" 47# L -80 Surface 3810' ,Surface 3809' , 12-1/4" 2780 cu ft Class 'G' a t . fil- 7" 26# L -80 3658' 11446'. 3657' 8191' 8 -1/2" 2/41-cu ft Class 'G'. "' ft ' .O. / / &e' - to 4-1/2" 12.6# L -80 11271' 14862' 8047' 8732' 6 -1/8" ft Class 'G' II BRLS ,S(a sks 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#, 13Cr85 11279' 11165' MD TVD MD TVD 12500' - 12900' 8725' - 8698' 26. ACID, FRACTURE, CEMENT SQUEEZE, ETC. _ 13620' - 14180' 8713' - 8712' �... -., 14360' - 14720' 8715' - 8729' COMPLEIIOI'& DEPTH INTERVAL (MD) AMOUNT AND KIND OF MATERIAL USED I f .I200' Freeze Protect w/ 152 Bbls of Diesel t . 27. PRODUCTION TEST Date First Production: Method of Operation (Flowing, Gas Lift, etc.): June 9, 2010 Flowing Date of Test: Hours Tested: Production For OIL - BBL: GAS-MCF: WATER -BBL: CHOKE SIZE: GAS -OIL RATIO: 6/14/2010 6 Test Period ♦ 1,213 1,164 -0- 49 960 Flow Tubing Casing Press: Calculated OIL -BBL: GAS -MCF: WATER -BBL: OIL GRAVITY -API (CORR): Press. 2,500 1,000 24 - Hour Rate ♦ 4,851 4,656 -0- Not Available 28. CORE DATA Conventional Core(s) Acquired? ❑ Yes No Sidewall Core(s) Acquired? ❑ Yes ® No If Yes to either question, list formations and intervals cored (MD +TVD of top and bottom of each), and summarize lithology eg D water (submit separate sheets with this form, if needed). Submit detailed descriptions, core chips, photographs and laboratory an liial� ' 250.071. None JUN 1 5 2010 Alaska Oil & Gas Cane. Commission RBDMS JUN 16 2010 Anchorage Form 10-407 Revised 12/2009 CONTINUED ON REVERSE Submit Original Only G., /00 to /(:).?....c. l0 �J 29. GEOLOGIC MARKERS (List all formations and ma encountered): 30. RMATION TESTS NAME MD TVD Well Tested? ❑ Yes ® No Permafrost Top If yes, list intervals and formations tested, briefly summarizing test Permafrost Base results. Attach separate sheets to this form, if needed, and submit detailed test information per 20 AAC 25.071. Ugnu 4 4647' 4608' None West Sak 2 7298 5923' Colville Mudstone 3 8228' 6318' Top HRZ 10905' 7742' Base HRZ 11154' 7950' LCU 11270' 8046' Sag River 11449' 8193' Shublik A 11500' 8237' Shublik B 11528 8261' Shublik C 11549' 8280' Sadlerochit 11575' 8303' Top CGL / Zone 3 11711' 8421' Base CGL / Zone 2C 11790' 8482' 23SB / Zone 2B 11857' 8530' 22TS 11930' 8576' 21 TS / Zone 2A 12015' 8630' Zone 1B 12112' 8681' TDF / Zone 1A 12218' 8717' Formation at Total Depth (Name): TDF / Zone 1A 12218' _ 8717' 31. List of Attachments: Summary of Daily Drilling Reports, Well Schematic Diagram, Surveys 32. I hereby certify that the foregoin is true and correct to the best of my knowledge. I / D 6 Sb D Signed: Terrie Hubble jati 0 1 / 01 ' Title: Drilling Technologist Date: PBU 15 - 27A 210 - 023 Prepared By Name/Number. Terre Hubble, 564 -4628 Well Number Permit No. / Approval No. DNling Engineer: Jacob Thompson, 564-5579 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: 15- 27_DIMS I AFE No Event Type: MOBILIZATION (MOB) Start Date: 4/9/2010 End Date: 4/10/2010 1X3- OOTWH -C (674,434.00 USD) i I Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:OOAM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120 "0 Long: 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.Oft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 4/10/2010 00:00 - 02:30 2.50 MOB P PRE RD PITS AND SECURE CELLER AND RIG FLOOR. REMOVE PITS FROM SUBSTRUCTURE AND STAGE. 02:30 - 06:30 4.00 MOB P PRE MOVE SUBSTRUCTURE FROM 15 -16 TO 15 -27. PLACE HERCULITE AND PLYWOOD IN CELLAR AREA. 06:30 - 08:30 2.00 MOB P PRE SPOT SUB OVER 15 -27 AND SPOT PITS TO RIG. 08:30 - 09:30 1.00 MOB P PRE R CELLAR, PITS AND INTERCONNECT. 09:30 - 11:00 1.50 MOB P PRE PJSM, RU LITTLE RED AND PRESSURE TEST LINES TO 2000 PSI. PRESSURE TEST OA TO 2000 PSI FOR 30 MIN. INITIAL PRESSURE 2130 PSI, 15 MIN PRESSURE 2010 PSI, 30 MINUTE PRESSURE 1960 PSI. RD LITTLE RED. 11:00 - 12:00 1.00 MOB P [ PRE PJSM, RU DSM LUBRICATOR AND TEST TO 500 PSI. RIG ACCEPTED AT 12:00 HRS ON 4/10/2010 Printed 6/11/2010 9:38:47AM • • North America - ALASKA - BP Page 1 of 36 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 4/10/2010 1 End Date: 5/14/2010 X3- 00TWH -C (3,761,506.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:OOAM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120 "0 Long: 0148 °3429.198 "W Active Datum: ORIG KELLY BUSHING @67.0ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 4/10/2010 12:00 - 13:00 1.00 RIGU P PRE DSM PULL BPV. RD DSM LUBRICATOR. 13:00 - 14:00 1.00 RIGU P PRE PRE -SPUD MEETING. 14:00 - 16:00 2.00 RIGU P PRE RU AND PRESSURE TEST HARDLINE TO TIGER TANK TO 500 PSI LOW AND 4000 PSI HIGH. PRESSURE TEST RIG LINES TO 3000 PSI. 16:00 - 19:00 3.00 RIGU P PRE REVERSE CIRCULATE 5 BBLS DIESEL FROM TUBING TO TANK. CIRCULATE 30 BBLS DIESEL OUT THE IA. CONTINUE TO CIRCULATE SURFACE TO SURFACE VOLUME. TOTAL OF 285 BBLS TO TIGER TANK. CIRCULATE 9.8 BRINE FOR 10 MIN TO PITS TO FIND LOSS RATE - NO LOSSES. - 163 GPM, 348 PSI 19:00 - 21:00 2.00 RIGU P PRE WELL OUT OF BALANCE. RU AND U -TUBE TUBING X IA. 21:00 - 22:00 1.00 RIGU P PRE DRY ROD IN BPV AND PERFORM ROLLING PRESSSURE TEST FROM BELOW TO 1000 PSI. RD AND BLOW DOWN LINES. 22:00 - 00:00 2.00 RIGU P PRE BLEED CONTROL LINES AND ND TREE AND ADAPTER. 4/11/2010 00:00 - 01:30 ! 1.50 RIGU P DECOMP ND TREE. INSPECT HANGER THREADS AND DUMMY RUN RETRIEVAL TOOL. INSTALL BLANKING PLUG. 01:30 - 04:00 2.50 BOPSUR P DECOMP PJSM, NU BOPE STACK. 04:00 - 04:30 0.50 BOPSUR P DECOMP RU TO TEST BOPE. 04:30 - 09:30 5.00 BOPSUR P DECOMP TEST BOPE AND CHOKE MANIFOLD TO 250 PSI LOW / 3500 PSI HIGH WITH 4" AND 3 -1/2" TEST JOINTS. TEST ANNULAR TO 250 PSI LOW / 3500 PSI HIGH. B JEFF JONES WAIVED WITNESS TO THE TEST. ` TEST WITNESSED BY WSL'S RYAN �s/ CIOLKOSZ /MATT MARTYN AND TOOLPUSHERS 1 Vi( KEITH CARTER/BIFF PERRY. - 09:30 - 10:00 0.50 BOPSUR P DECOMP REMOVE BLANKING PLUG. RD AND BLOW DOWN TEST EQUIPMENT. 10:00 - 11:00 1.00 BOPSUR P DECOMP RU LUBRICATOR AND TEST TO 500 PSI. PULL BPV. RD DSM LUBRICATOR. 11:00 - 12:00 1.00 PULL P DECOMP MU HANGER RETRIEVAL TOOL TO JOINT OF DRILL PIPE AND XO. MU TO HANGER AND BACK OUT LDS. 12:00 - 13:30 1.50 PULL P j DECOMP P L HA T• • •; :ND 1 CIRCULATE SURF SAFE -O PILL SURFACE TO 1 SURFACE VOLUME -287 GPM, 410 PSI 13:30 - 21:30 8.00 PULL P DECOMP MONITOR WELL. LD HANGER AND PUP JOINT. PULL 126 JTS OF 3.5" TUBING, 3 PUP JOINTS, 1 SSSV, 1 GLM, 130 CLAMPS AND 9 SS BANDS. Printed 6/11/2010 9:39:36AM • • North America - ALASKA - BP Page 2 of 36 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 4/10/2010 End Date: 5/14/2010 X3- 00TWH -C (3,761,506.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:OOAM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120 "0 Long: 0148 °3429.198 "W Active Datum: ORIG KELLY BUSHING @67.0ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 21:30 - 23:00 1.50 PULL P DECOMP RD TUBING HANDLING AND SLB SPOOLING EQUIPMENT. CLEAN AND CLEAR FLOOR. _ �7p 23:00 - 00:00 1.00 BOPSUR P DECOMP RU AND TEST I IltirR PIPE RAMS TO 250 PSI '` 1 � LOW / 3500 PSI HIGH WITH 4" TEST JOINT. 4/S 4/12/2010 00:00 - 01:30 1.50 CLEAN P WEXIT RU TO RIH WITH DP. PU CLEAN OUT BHA #1: 8.5" BIT, FLOAT SUB, TWO STRING MILLS, BOOT BASKETS AND CASING SCRAPER. 01:30 05:30 4.00 CLEAN P WEXIT RIH WITH CLEAN OUT BHA AND TAG TUBING STUB AT 4053' MD - 100K PUW, 100K SOW 05:30 - 06:00 0.50 CLEAN P WEXIT CIRCULATE SURFACE TO SURFACE VOLUME. - 550 GPM, 1980 PSI 06:00 - 07:00 1.00 CLEAN ( P WEXIT MONITOR WELL, POOH FROM 4063' TO 785' MD 07:00 - 08:30 1.50 CLEAN P WEXIT RACK BACK 5 STANDS OF HWDP, 3 STANDS OF DRILL COLLARS, LD CLEAN OUT BHA #1. CLEAN AND CLEAR RIG FLOOR. 08:30 - 10:00 1.50 DHB P WEXIT , RU SLB E -LINE AND PREPARE EZSV AND CHARGES 10:00 - 12:00 2.00 DHB P WEXIT MU CCL AND 9 -5/8" EZSV. RIH TO 3950' AND LOCATE COLLAR. SET PLUG AT 3830', 5' ABOVE COLLAR AND POOH. 12:00 - 13:30 1.50 WHSUR P WEXIT RD SLB E -LINE. RU AND PRESSURE TEST 9 -5/8" CASING AND EZSV TO 3500 PSI FOR 30 MIN LOST 45 IN THE FIRST 15 MIN AND 18 IN THE SECOND 15 MIN. 13:30 - 15:00 1.50 WHSUR P WEXIT MU MULE SHOE AND RIH WITH DRILL COLLARS TO 277'. MOVE HWDP TO OFF DRILLERS SIDE. - 40K PUW, 40K SOW 15:00 - 18:30 3.50 WHSUR P WEXIT RIH WITH 111 JTS OF 4" DP TO 3759' - 95K PUW, 90K SOW 18:30 - 20:00 1.50 WHSUR P WEXIT MU AND SET STORM PACKER. PRESSURE TEST TO 2000 PSI FOR 10 MIN. PULL WEAR BUSHING. 20:00 - 00:00 4.00 WHSUR P WEXIT ND TUBING SPOOL AND BACK OUT LDS. PI II I 9 -5/8" PACKOFF WITH 15K LBS. INSTALL NEW PACK OFF AND RUN IN LDS. 4/13/2010 00:00 - 02:00 2.00 BOPSUR P WEXIT NU BOPE AND TUBING SPOOL. TEST THE PACK -OFF AND BREAK TO 5000 PSI FOR 30 MIN 02:00 - 05:00 3.00 WHSUR P WEXIT PULL STORM PACKER. POOH FROM 3801' RACKING BACK DRILL PIPE AND DRILL COLLARS. CLEAN AND CLEAR RIG FLOOR. 05:00 - 07:00 2.00 WHIP P WEXIT - MU WHIPSTOCK BHA 07:00 - 08:00 1.00 WHIP P � WEXIT I PICK UP DP. 810' -1748' 08:00 - 09:30 1.50 WHIP P WEXIT RIH W/ STANDS. 1748'- 3816'. PU WT -98K, SOW -98K 09:30 - 11:30 2.00 WHIP P WEXIT PJSM RU GYRO . ORIENT 158 RIGHT OF DUE NORTH, POOH WITH GYRO. 11:30 - 12:00 0.50 ( WHIP P WEXIT j RIH 3816'- 3832'. TAG PLUG, SET DN 20K. SHEAR ANCHOR. P/U 10K AND CONFIRM SET. SLACK OFF 50K SHEAR BOLT . TOW- 3810', BOW- 3827 Printed 6/11/2010 9:39:36AM • North America - ALASKA - BP Page 3 of 36 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 4/10/2010 End Date: 5/14/2010 X3- 00TWH -C (3,761,506.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:OOAM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120 "0 Long: 0148 °3429.198 "W Active Datum: ORIG KELLY BUSHING @67.0ft (above Mean Sea Level) �f:A Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12:00 - 13:30 1.50 WHIP P WEXIT DISPLACE WELL TO 9.3 PPG LSND. 500 GPM @ 748 PSI. PREFORM SLOW PUMP RATES. 13:30 - 21:30 8.60 STWHIP P WEXIT MILL WINDOW F- 3810 - 3817'. DRILL 20' OF NEW HOLE FROM 3817' TO 3847' MD. PUW -95K, SOW -95K, RTW -95K I _ _ NO CEMENT RETURNS NaJ 21:30 - 22:30 1.00 STWHIP P WEXIT WORK MILLS ACROSS WINDOW 5 TIMES W/O ' n ROTATING. 400GPM, 650 PSI. 100 RPM. 1.5K TQ, PUW -95K, SOW -95K, RTW -95K 22:30 - 23:30 1.00 STWHIP P WEXIT CIRC SUPER SWEEP PILL SURF TO SURF. 400 GPM @ 650 PSI. 1.5K TQ, PUW -95K, SOW -95K, RTW -95K 23:30 - 00:00 0.50 STWHIP P WEXIT RU FOR LOT. 9.3 PPG LSND IN AND OUT. Lot 4/14/2010 00:00 - 01:00 1.00 STWHIP P WEXIT RU AND PERFORM LOT WITH 9.3 PPG LSND AT 3847' TVD. BREAKOVFR AT R1R PSI WITH AN EMW OF 13.38 PPG. RD AND BLOW DOWN LINES. 01:00 - 02:00 1.00 STWHIP P WEXIT MONITOR WELL, STATIC. PUMP DRYJOB AND POOH FROM 3795' TO 788' MD. 02:00 - 03:30 1.50 STWHIP P WEXIT RACK BACK 5 STANDS OF HWDP AND LD 9 DRILL COLLARS. LD BAKER MILLING BHA #2. 2 UPPER MILLS IN GAUGE. 03:30 - 05:00 1.50 DRILL P WEXIT PULL WEAR RING. DRAIN STACK AND FUNCTION RAMS. JET STACK AND BLOW DOWN MUD CROSS. LD TOOLS. INSTALL WEAR RING. 05:00 - 07:30 2.50 DRILL P WEXIT PICK UP INTERMEDIATE DRILLING BHA. BHA #3. DTX619M -D6 BIT, 1.5 XP MOTOR, MWD AND UBHO. 07:30 - 10:30 3.00 DRILL P WEXIT PJSM, PU DP FROM 722' TO 1192' MD. SHALLOW HOLE TEST MWD. 450 GPM AND 700 PSI. CONTINUE TO PU DP TO 3575' MD 10:30 - 11:30 1.00 DRILL P WEXIT CONTINUE TO PU DP AND MAD PASS FROM 3575' TO 3794' MD WITHOUT PUMPS OR ROTATION AT 300 FPH. 11:30 - 13:00 1.50 DRILL P WEXIT RIH WITH GYRO AND POOH WITH WIRELINE. ORIENT AND RUN THROUGH WINDOW WITHOUT PUMPS OR ROTATION. TAG UP ON BOTTOM AT 3847' MD. NO DRAG GOING THROUGH --- — - - -- � - WINDOW. 13:00 - 21:00 8.00 DRILL P INT1 DRILL AHEAD FROM 3847' TO 4026' MD. - 5 -10K WOB - 550 GPM @ 1490 ON, 1380 PSI OFF. - 30 RPM TQ ON 2K, OFF 1.5K - PUW 95K, SOW 95K, RTWT 98K. - CALC. ECD 9.66 PPG, ACTUAL ECD 9.66 PPG. GYRO EVERY 30 FT SLOW PUMP RATES TAKEN _ Printed 6/11/2010 9:39:36AM North America - ALASKA - BP Page 4 of 36 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 4/10/2010 End Date: 5/14/2010 X3- 00TWH -C (3,761,506.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:OOAM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120 "0 Long: 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.Oft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 21:00 - 22:00 1.00 DRILL P INT1 SET DOWN WEIGHT AT 4026' MD. PULL 25K OVER, SET DOWN 25K, NO GO. UNABLE TO ROTATE. STILL ABLE TO CIRCULATE. TORQUE AND SLUMP TO FREE. PU BACK THROUGH AND PULL UP THROUGH WHILE ROTATING W/O PROBLEM. ATTEMPT TO SLIDE THROUGH WITH BHA TAKING WEIGHT AT SAME DEPTH. ROTATE DOWN THROUGH W/O PROBLEM. NO ISSUES AFTER THAT POINT. 22:00 - 00:00 2.00 DRILL P INT1 DRILL AHEAD FROM 4026' TO 4076' MD. - 5 -10K WOB - 550 GPM @ 1490 ON, 1380 PSI OFF. - 30 RPM TQ ON 2K, OFF 1.5K - PUW 95K, SOW 95K, RTWT 98K. - CALC. ECD 9.66 PPG, ACTUAL ECD 9.66 PPG. - AST 3.9 HRS, ART .13 HRS, ADT 4.11 HRS, BIT 4.11, JARS 183.7 GYRO EVERY 30 FT 4/15/2010 00:00 - 12:00 12.00 DRILL P INT1 DRILL AHEAD FROM 4046' TO 4300' MD 10K WOB - 550 GPM @ 1610 ON, 1490 PSI OFF. - 60 RPM, TQ ON 3K, OFF 1.5K - PUW 105K, SOW 98K, RTWT 100K. - CALC. ECD 9.65 PPG, ACTUAL ECD 9.69 PPG. - ADT = 4.06, AST = 3.77, ART = .29, BIT = 8.17, JAR = 187.8 - 9.3 PPG MW IN AND OUT GYRO EVERY 30 FT 9.3PPGMWINANDOUT 12:00 - 00:00 12.00 DRILL P INT1 DRILL AHEAD FROM 4300' TO 4890' MD - 10KWOB - 577 GPM @ 1920 ON, 1720 PSI OFF. - 60 RPM, TQON4K, OFF 2K - PUW 110K, SOW 100K, RTWT 105K. - CALC. ECD 9.53 PPG, ACTUAL ECD 9.83 PPG. - ADT =6.24, AST =4.43, ART= 1.81, BIT= 14.41, JAR = 189.74 - 9.3 PPG MW IN AND OUT - RELEASE GYRO @16:00 9.3 PPG MW IN AND OUT, SPR TAKEN 4/16/2010 00:00 - 09:30 9.50 DRILL P INT1 DRILL AHEAD FROM 4890' TO 5755' MD - 15K WOB - 575 GPM @ 2200 ON, 2035 PSI OFF. - 60 RPM, TQ ON 6K, OFF 4K - PUW 117K, SOW 95K, RTWT 100K. - CALC. ECD 9.51 PPG, ACTUAL ECD 9.83 PPG. - ADT = 7.22, AST = 4.10, ART = 3.12, BIT = 21.63, JAR = 201.2 SLOW PUMP RATES TAKEN 9.3 PPG MW IN AND OUT Printed 6/11/2010 9:39:36AM • North America - ALASKA - BP Page 5 of 36 Operation Summary Report p � p Common Well Name: 15- 27_DIMS AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 4/10/2010 End Date: 5/14/2010 X3- 00TWH -C (3,761,506.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:OOAM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120 "0 Long: 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.0ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 09:30 - 10:00 0.50 DRILL P INT1 UNABLE TO SLIDE AHEAD AT 5755' MD. ATTEMPT TO ROTATE AHEAD AND STALLED OUT. UNABLE TO ROTATE OR MOVE PIPE UP OR DOWN. ATTEMPT TO WORK PIPE WITHOUT SUCCESS. JAR UP 90K OVER TWICE TO FREE PIPE. BACKREAM STAND WITHOUT PROBLEM. 10:00 - 00:00 14.00 DRILL P INT1 DRILL AHEAD FROM 5755' TO 6950' MD - 10 -20K WOB - 575 GPM @ 2550 ON, 2310 PSI OFF. - 80 -100 RPM, TQ ON 6 -7K, OFF 4K - PUW 127K, SOW 102K, RTWT 108K. - CALC. ECD 9.50 PPG, ACTUAL ECD 10.07 PPG. - ADT = 8.54, AST = 4.00, ART = 4.54, BIT = 30.17, JAR = 209.8 SLOW PUMP RATES TAKEN 9.3 PPG MW IN AND OUT 4/17/2010 00:00 - 12:00 12.00 DRILL P INT1 DRILL AHEAD FROM 6950' TO 8154' MD - 10 -25K WOB - 575 GPM @ 2829 ON, 2570 PSI OFF. - 80 -100 RPM, TQ ON 6 -7K, OFF 5.5K - PUW 142K, SOW 107K, RTWT 117K. - CALC. ECD 9.45 PPG, ACTUAL ECD 10.19 PPG. ADT = 7.53, ART = 5.75, AST = 1.78, BIT HRS = 37.7, JARS = 217.3 9.5 PPG MW IN AND OUT SLOW PUMP RATES TAKEN 12:00 - 00:00 12.00 DRILL P INT1 DRILL AHEAD FROM 8154' TO 9360' MD - 10 -25K WOB - 575 GPM @ 3340 ON, 3060 PSI OFF. - 80 -100 RPM, TQ ON 8K, OFF 6K - PUW 152K, SOW 110K, RTWT 120K. - CALC. ECD 9.79 PPG, ACTUAL ECD 10.46 PPG. ADT = 8.01, ART = 5.12, AST = 2.89, BIT HRS = 45.71, JARS = 225.3 9.5 PPG MW IN AND OUT SLOW PUMP RATE TAKEN _ 4/18/2010 00:00 - 03:00 3.00 DRILL P INT1 DRILL AHEAD FROM 9360' TO 9848' MD - 10 -25K WOB - 575 GPM @ 3515 ON, 3225 PSI OFF. - 80 -100 RPM, TQ ON 10K, OFF 6K - PUW 167K, SOW 110K, RTWT 125K. - CALC. ECD 9.89 PPG, ACTUAL ECD 10.6 PPG. 9.8 PPG MW IN AND OUT SLOW PUMP RATE TAKEN 03:00 - 03:30 0.50 DRILL P INT1 LOST 10 BBLS OF FLUID AT 9830' MD. SHUT DOWN AND MONITORED WELL. WELLBORE STABILIZED AFTER 4 BBLS OF MUD BACK, FLOW STOPPED. DRILL AHEAD 15 FT AND LOST 11 BBLS. SHUT DOWN AND MONITOR WELL. WELL WELL STABILIZED AFTER 1.5 BBLS OF MUD BACK. CONSULT WITH TOWN ENGINEER. Printed 6/11/2010 9:39:36AM • 1 Forth America • ALASKA - BP Page 6 of 36 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 4/10/2010 End Date: 5/14/2010 X3- OOTWH -C (3,761,506.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:O0AM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120 "0 Long: 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.0ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 03:30 - 05:00 1.50 DRILL P INT1 CBU 1X. LOSS RATE OF 20 BPH GPM- 550, PSI -2975, TOTAL BBL PUMPED -629 SHUT DOWN AND MONITOR WELL. WELL ! STABILIZED AFTER 4 BBS RETURNED. [CONTINUE CIRCULATING TO REDUCE ECD'S 05:00 - 18:30 13.50 DRILL P INT1 DRILL AHEAD FROM 9848' TO 10694' MD, - 10 -15K WOB - 550 GPM @ 3330 ON, 3160 PSI OFF. - 80 -100 RPM, TQ ON 9K, OFF 8K - PUW 185K, SOW 120K, RTWT 135K. - CALC. ECD 9.89 PPG, ACTUAL ECD 10.6 PPG. NO MUD LOSSES TO FORMATION MONITOR WELL BEFORE WEIGHT UP, STATIC 9.8 PPG MW IN AND OUT 18:30 - 21:00 2.50 DRILL N DPRB INT1 DISPLACE WELL TO 10.5 MW. 550 GPM AND 3176 PSI. ENCOUNTER HIGH LOSSES. PUMP 620 BBLS OF 10.5 PPG MUD AND LOST 270 BBLS TO FORMATION. SHUT DOWN AND MONITOR WELL, NO STATIC LOSSES. CONSULT WITH TOWN ENGINEER. DECIDE TO WIPE HOLE AND LOWER MW TO 10.2 PPG 21:00 - 22:30 1.50 DRILL N DPRB INT1 TOH STANDING BACK FROM 10694'. SWABBING FROM 9660 -9566' ATTEMPT TO BACK REAM GPM- 400, PSI -1970, RPM -60, TQ UP, NO RETURNS, OVERPULL 25K RIH TO 9660' MD 22:30 - 00:00 1.50 DRILL N DPRB INT1 ATTEMPT TO ESTABLISH CIRCULATION. LOSING — 150 BPH 1 10.2 PPG MW IN, 10.5 PPG OUT GPM -400, PSI- 1970, RPM -60, TQ- 6.5K BBL LOST DURING PAST 24 HRS- 444 BBL 4/19/2010 00:00 - 00:30 0.50 DRILL N DPRB INT1 CIRCULATE AND CONDITION DUE TO LOST CIRCULATION. ATTEMPT TO CIRCULATE TO 10.2 PPG MW AT 165 GPM AND 720 PSI. 588 BBLS PUMPED. UNABLE TO KEEP UP WITH I OSS RATE. ,SHUT DOWN PUMPS. _ 00:30 - 02:30 2.00 DRILL N DPRB INT1 I REDUCE SURFACE SYSTEM TO 9.8 PPG. WAIT ON MUD FROM MUD PLANT AND CONSULT WITH TOWN ENGINEER. _ 02:30 - 09:00 6.50 DRILL N DPRB INT1 CIRCULATE 9.8 PPG MUD AT 1 BPM AND 575 PSI WHILE WAITING ON 9.8 MUD TO BE DELIVERED. LOSING AT 54 BPH. 473 BBLS LOST DOWN HOLE. 09:00 - 11:00 2.00 DRILL N DPRB INT1 RIH FROM 9552' TO 9845' MD SPOT 50 BBL 40 LB /BBL LCM PILL AT 3 BPM AND 740 PSI POOH 1 TO 9375' MD _ Printed 6/11/2010 9:39:36AM • • North America - ALASKA - BP Page 7 of 36 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 4/10/2010 End Date: 5/14/2010 X3- 00TWH -C (3,761,506.00 USD) ( ) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:OOAM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120"0 Long: _ 0148°34'29.198'W Active Datum: ORIG KELLY BUSHING @67.0ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 11:00 - 13:30 2.50 DRILL N DPRB INT1 CBU 1X - 3 BPM, 628 PSI - 5 BPM, 670 PSI - 155K PUW, 105K SOW ABLE TO ESTABLISH FULL CIRCULATION TOTAL OF 527 BBLS LOST IN THE LAST 12 HOURS 13:30 - 14:30 1.00 DRILL N DPRB INT1 SHUT DOWN AND MONITOR WELL. WELL STABILIZING, 1.7 BBLS BACK BEFORE STATIC. 14:30 - 15:00 0.50 DRILL N DPRB INT1 RIH FROM 9375' TO 9843' MD 15:00 - 16:00 1 1.00 DRILL N DPRB INT1 STAGE PUMPS UP TO 6 BPM AND 970 PSI. 289 BBLS PUMPED - NO LOSSES. WELL STABILIZING, 4.6 BBLS BACK. 16:00 - 17:30 1.50 DRILL N DPRB INT1 RIH FROM 9843' TO 10694 MD. WASHING TO BOTTOM AT 5 BPM AND 810 PSI. NO FILL ON BOTTOM. _ 17:30 - 00:00 6.50 DRILL N DPRB INT1 STAGE PUMPS UP TO 500 GPM AND 2680 PSI. ROTATE AT 80 RPM. SWAP OUT 870 BBLS OF NEW 9.8 PPG MUD. TOTAL OF 14 BBLS OF MUD LOST TO WELLBORE DURING CIRCULATION. SHUT DOWN AND MONITOR WELL. WELL STABILIZING 4/20/2010 00:00 - 00:30 0.50 DRILL N DPRB j INT1 CONTINUE TO MONITOR WELL. - WELL STABILIZING, GET 3 BBLS BACK. - WELL STATIC. _ 00:30 - 03:30 3.00 DRILL N DPRB INT1 BACKREAM FROM 10,694' TO 8,805' MD. - 500 GPM, 2,416 PSI. - 80 RPM, 7 -12K TQ. - 180K PU WT, 120K ROT WT, 115K SO WT. - 9.8PPGMWINANDOUT. - BACKREAMING AT A REDUCED RATE FOR ECD MANAGEMENT AND TO REDUCE LOSSES. - LOST 305 BBLS SINCE STARTED BACKREAMING; SHAKERS LOADING UP AT TIMES. 03:30 - 04:30 1.00 DRILL N DPRB INT1 CIRCULATE TO REDUCE ECDS FROM 10.85 TO 10.58 PPG EMW. - 500 GPM, 2240 PSI. - 80 RPM, 5.5K TQ, 120K ROT WT. 04:30 - 08:30 4.00 DRILL N DPRB INT1 BACKREAM FROM 8,805' TO 8,150' MD. - 500 GPM, 2,240 PSI. - 80 RPM, 7 -12K TQ. - 180K PU WT, 120K ROT WT, 115K SO WT. - 9.8 PPG MW IN AND OUT. - AT 8,250', REDUCED PUMP RATE TO 400 GPM, 1,700 PSI TO MANAGE LOSSES. 08:30 - 09:00 0.50 DRILL N DPRB INT1 CBU. - 500 GPM, 2,110 PSI. - 560 GPM, 2,425 PSI. - 100 RPM, 5.5K TQ, 112K ROT WT. 1 - PUMPED 566 BBLS. Printed 6/11/2010 9:39:36AM North America - ALASKA - BP Page 8 of 36 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 4/10/2010 I End Date: 5/14/2010 X3- 00TWH -C (3,761,506.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:OOAM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120 "0 Long: 0148°34'29.198'W Active Datum: ORIG KELLY BUSHING @67.0ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 09:00 - 14:00 5.00 DRILL N DPRB INT1 BACKREAM FROM 8,150' TO 6,556' MD. - 500 GPM, 2,070 PSI. - 80 RPM, 5 -10K TQ. - 135KPUWT,107K ROT WT,95KSOWT. - 9.8 PPG MW IN AND OUT. - ROTATED GHOST REAMER THROUGH WINDOW AT 20 RPM WITH NO ISSUES. 14:00 - 15:30 1.50 DRILL N DPRB INT1 CIRCULATE. - 957 BBLS, 550 GPM, 2,020 PSI. - 120 RPM, 4.5K TQ. 15:30 - 17:00 1.50 DRILL N DPRB INT1 MONITOR WELL. - HAVE POSITIVE FLOW OF —20 BBLS /HR. - CONFIRM WELLBORE BREATHING WITH NOTED FLOW DECREASING. 17:00 - 19:00 2.00 DRILL N DPRB INT1 POH FROM 6,556' TO 3,731'. 19:00 - 20:00 1.00 DRILL N DPRB INT1 MONITOR WELL. - HAVE POSITIVE FLOW OF —20 BBLS /HR. - CONFIRM WELLBORE BREATHING WITH NOTED FLOW DECREASING. 20:00 - 21:30 1.50 DRILL N DPRB INT1 POH FROM 3,731' TO 181'. - MONITOR WELL. - HAVE POSITIVE FLOW OF —5 -10 BBLS /HR. - CSNF RM W LBORE BRFATHIN� TH NnT� FLOW DECREASING. 21:30 - 00:00 2.50 DRILL N DPRB INT1 LD BHA # 3. - RACK BACK DCS. - DOWNLOAD ARC TOOL. - LD MOTOR. - LD BIT; BIT GRADE -- 1, 5, WT, S, X, 3, RO, BHA. 4/21/2010 00:00 - 01:00 1.00 DRILL N DPRB INT1 PU BHA # 4 TO 73'. - NOTICE LOOSE WEAR BAND ON ARC TOOL. 01:00 - 01:30 0.50 DRILL N DPRB INT1 LD BAD ARC TOOL. - PROGRAM BACK -UP ARC TOOL AND BRING TO RIG FLOOR. 01:30 - 02:30 1.00 DRILL N DPRB INT1 PU BHA # 4 TO 734'. - BHA # 4 CONSISTS OF: HYCALOG DTX619M -D6 BIT, 1.5 DEGREE XP MOTOR, ARC6 /MWD, UBHO, NM STAB, NM DCS, SAVER SUB, 1 JT 5" HWDP, HYDRAULIC JAR, AND CCV. 02:30 - 05:00 2.50 DRILL N DPRB INT1 RIH WITH BHA # 4 TO 3,744'. - SHALLOW HOLE TEST MWD AT 1,205'; TEST GOOD. - 550 GPM, 1,210 PSI. 05:00 - 05:30 0.50 DRILL N DPRB INT1 SLIP AND CUT 131' OF DRILLING LINE. 05:30 - 06:00 0.50 DRILL N DPRB INT1 SERVICE TOP DRIVE, BLOCKS, AND CROWN. - INSPECT DRAWWORKS AND ADJUST BRAKES. Printed 6/11/2010 9:39:36AM • North America - ALASKA - BP Page 9 of 36 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 4/10/2010 End Date: 5/14/2010 IX3- 00TWH -C (3,761,506.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:OOAM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 17'58.120"0 Long: 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.0ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 06:00 - 10:30 4.50 DRILL N DPRB INT1 RIH WITH BHA # 4 FROM 3,744' TO 10,694'. - BREAK CIRCULATION AT 5,905', 7,782', AND 9,666'; PUMP 150 BBLS AT 450 GPM AND 1,710, 1,815, AND 2,215 PSI, RESPECTIVELY. - PU WT 115K, 132K, AND 160K; SO WT 90K, 98K, AND 102K, RESPECTIVELY. - WASHDOWN FROM 10,606' TO 10,694' PUMPING AT 165 GPM, 685 PSI AND WITH PU WT 185K,SOWT112K. - NO FILL ON BOTTOM. 10:30 - 19:30 9.00 ( DRILL N DPRB INT1 CIRCULATE WHILE WAITING ON 100 -BBL, EMI -1829 LCM PILL TO BE BUILT. - STAGE PUMPS UP AT 350 GPM, 1,540 PSI; 400 GPM, 1,960 PSI; 450 GPM, 2,330 PSI. - PU WT 185K, SO WT 112K, ROT WT 140K. - 20 RPM, 6.5K TQ. - 5,770 TOTAL BBLS CIRCULATED. 19:30 - 23:00 3.50 DRILL N DPRB INT1 _ PUMP EMI -1829 LCM PILL DOWN DRILL STRING. - 87 BBLS TOTAL. - PILL CAUSED VALVES TO NOT SEAT PROPERLY IN BOTH MP # 1 AND # 2 (SEE REMARKS). 23:00 - 00:00 1.00 DRILL N 1 DPRB INT1 I POH FROM 10,684' TO 10,231' SPOTTING 87 -BBL. L/ - SPOTTED PILL AT 115 STROKES /STAND. - 45K OVERPULL AT 10,290'. - WORKED THROUGH TIGHT SPOTS. 4/22/2010 00:00 - 02:00 2.00 DRILL N DPRB INT1 POH FROM 10,231' TO 9,008' SPOTTING 87 -BBL LCM PILL. - SPOTTED PILL AT 115 STROKES /STAND. 02:00 - 03:30 1.50 DRILL N DPRB INT1 CBU X 1.5. - STAGE UP TO 500 GPM. - 504 GPM, 2,344 PSI. - PUWT150K,SOWT105K, ROT WT125K. - ROTATE 20 RPM ON DOWN STROKE, 5.5K TQ. - MW 9.8 PPG IN AND OUT. 03:30 - 04:00 0.50 DRILL N DPRB INT1 PJSM AND RIG UP FOR HESITATION SQUEEZE. - MONITOR WELL; WELL STATIC. - PRESSURE TEST LINES TO 3,500 PSI; TEST GOOD. 04:00 - 05:00 1.00 DRILL N DPRB INT1 HESITATION SQUEEZE OF 87 -BBL EMI -1820 LCM PILL. - PUMPED 15 BBLS AT 10 SPM. - FINAL PRESSURE OF 288 PSI AT 258 STROKES. - HELD FOR 30 MINUTES AND HAD FINAL HOLDING PRESSURE OF 167 PSI. Printed 6/11/2010 9:39:36AM • • North America - ALASKA - BP Page 10 of 36 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 4/10/2010 End Date: 5/14/2010 X3- 00TWH -C (3,761,506.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:OOAM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120 "0 Long: 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.Oft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 05:00 - 08:30 3.50 DRILL N DPRB INT1 HESITATION SQUEEZE OF 87 -BBL EMI -1820 LCM PILL. - PUMPED 5 BBLS AT 10 SPM; DID THIS 4X. - FINAL PRESSURES OF 289, 289, 300, AND 298 PSI AT 5 BBLS, 87 STROKES. - HELD FIRST 3 FOR 15 MINUTES AND THE LAST ONE FOR 90 MINUTES AND HAD FINAL HOLDING PRESSURES OF 189, 191, 198, AND 157 PSI. 08:30 - 10:00 1.50 DRILL N DPRB INT1 CIRCULATE. - 575 GPM. - ICP 2,825 PSI, FCP 2,785 PSI. • - PU WT 145K, SO WT 105K, ROT WT 120K. - ROTATE 20 RPM ON DOWN STROKE, 5K TQ. MW 9.8 PPG IN AND OUT. 10:00 - 10:30 0.50 DRILL N DPRB INT1 RIH FROM 9,008' TO 9,666'. - PU WT 155K, SO WT 105K. - MONITOR WELL; WELL STATIC. 10:30 - 11:00 j 0.50 DRILL N DPRB INT1 CIRCULATE. - 550 GPM, 2,850 PSI. - MW 9.8 PPG IN AND OUT. 11:00 - 12:00 1.00 DRILL N DPRB INT1 REAM FROM 9,666' TO 10,694'. - 400 GPM, 1,800 PSI. - 60 RPM, 7.5K TQ. - PU WT 190K, ROT WT 130K, SO WT 112K. - MONITOR WELL; WELL STATIC. 12:00 - 14:00 2.00 DRILL N DPRB INT1 CIRCULATE. - 1,511 BBLS. - 550 GPM, 2,895 PSI. - PUWT180K,SOWT120K, ROT WT140K. - ROTATE 60 RPM AND RECIPROCATE PIPE, 6 -7K TO. - MW 9.8 PPG IN AND OUT. 14:00 - 16:30 2.50 DRILL N DPRB INT1 CIRCULATE. - MONITOR WELL FOR 20 MINUTES; WELL STATIC. - SPIKE SYSTEM TO 10 PPG MW. - 295 GPM, 1,060 PSI. - 60 RPM, 6 -8K TQ. - AT END OF CIRCULATION, MW 10 PPG IN AND OUT. 16:30 - 22:30 6.00 DRILL P INT1 DRILL AHEAD IN 8 -1/2" INTERMEDIATE HOLE FROM 10,694' TO 11,005' MD. - 5 -10K WOB. - 530 GPM. - 2,990 PSI ON, 2,820 PSI OFF. - 100 RPM, TQ ON 10.5K, OFF 9K. - PUWT203K,SOWT118K, ROT WT142K. - CALC. ECD 10.52 PPG, ACTUAL ECD 10.59 PPG. - 10 PPG MWIN AND OUT. - AST 1.52, ART 2.15, ADT 3.67. - FLOW CHECK CONNECTIONS AND CONFIRM THAT WELLBORE IS BREATHING. Printed 6/11/2010 9:39:36AM North America - ALASKA - BP Page 11 of 36 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 4/10/2010 End Date: 5/14/2010 X3- 00TWH -C (3,761,506.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:OOAM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120 "0 Long: 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.0ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 22:30 - 00:00 1.50 DRILL P INT1 CBU X 1.5. - 530 GPM. - 2,885 PSI. - ROTATE 20 RPM ON DOWN STROKE, 8.5K TQ. - PU WT 203K, ROT WT 142K, SO WT 118K. - MONITORED SHAKERS; HOLE UNLOADED SIGNIFICANTLY AND CIRCULATION CONTINUED UNTIL SHAKERS WERE CLEAN. - MW 10 PPG IN AND OUT. 4/23/2010 00:00 - 02:30 2.50 DRILL N DPRB j INT1 CIRCULATE AND WEIGHT UP MUD TO 10.3 PPG. - 530 GPM. - 2,944 PSI. - ROTATE 20 RPM ON DOWN STROKE, 7.5K TQ. - PU WT 203K, ROT WT 142K, SO WT 118K. - MW 10.3 PPG IN AND OUT BY THE END OF THE CIRCULATING. 02:30 - 11:15 8.75 DRILL P INT1 DRILL AHEAD IN 8 -1/2" INTERMEDIATE HOLE FROM 1 1.005' TO 11,244' MD. - 5 -8K WOB. - 450 GPM. 1- 2,460 PSI ON, 2,340 PSI OFF. - 100 RPM, TQ ON 10.5K, OFF 9K. - PU WT 200K, SO WT 120K, ROT WT 145K. - CALC. ECD 10.83 PPG, ACTUAL ECD 10.9 PPG. - AST .28, ART 4.51, ADT 4.79. - MW 10.3 PPG IN AND OUT. 11:15 - 12:00 0.75 DRILL N DPRB INT1 WELL CONTROL. - NOTE 6% INCREASE IN RETURN FLOW. - MONITOR WELL; FLOW CONFIRMED AND WELL SHUT IN VIA ANNULAR PREVENTER. - ISP = 20_PSI _SIDPP10 PSI SICP, BUT CLIMBED TO 150 PSI SIDPP, 90 PSI SICP AFTER 5 MINUTES. - 3 -BBL PIT GAIN. 5 - CONSULT WITH TOWN ENGINEERS. - AT 1130 HRS, NOTIFIED AOGCC OF WELL t� BEING SHUT IN; AOGCC REP BOB NOBLE RESPONDED AT NOON. 12:00 - 22:00 10.00 DRILL N DPRB INT1 ATTEMPT TO KILL WELL VIA THE DRILLERS/ METHOD. - CIRCULATE AT 1 BPM, 320 PSI, BUT LOSE FLUIDS TO FORMATION. - INCREASED RATE TO 2 BPM, 520 PSI AND HAD 30% FLUID LOSS RATE. 1 - CONSULT WITH TOWN ENGINEERS. 22:00 - 00:00 2.00 DRILL N DPRB INT1 WELL CONTROL. - 100 PSI SIDPP AND 70 PSI SICP AT THE START OF THE WELL KILL OPERATION. - BULLHEAD 105 BBI S OF 14 PPO 1 SNn mi in, FOLLOWED BY 97 BBLS OF 10.3 PPG LSND MUD. - ICP = 600 PSI, FCP = 630 PSI. - 15 MINUTES AFTER END OF PUMPING, HAD 320 PSI SIDPP AND 150 PSI SICP. Printed 6/11/2010 9:39:36AM North America - ALASKA - BP Page 12 of 36 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 4/10/2010 End Date: 5/14/2010 X3- 00TWH -C (3,761,506.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:OOAM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120 "0 Long: 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.Oft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 4/24/2010 00:00 - 08:30 8.50 DRILL N DPRB INT1 WELL CONTROL. - ALLOW PRESSURES TO STABILIZE AFTER BULLHEADING 105 BBLS OF 14 PPG LSND MUD FOLLOWED BY 97 BBLS OF 10.3 PPG LSND MUD. - 15 MINUTES AFTER END OF PUMPING, HAD 320 PSI SIDPP AND 150 PSI SICP. - APPROXIMATELY 30 MINUTES AFTER PUMPING, BLED OFF 2 BBLS FROM DP; DP PRESSURE FELL TO 0 PSI AND SICP FELL TO 100 PSI. - IN 15 MINUTES, SIDPP WAS BACKUP TO 220 PSI AND SICP WAS AT 100 PSI. - CONSULT WITH TOWN ENGINEERS. - APPROXIMATELY 3 AND A HALF HOURS AFTER PUMPING, DECISION MADE WITH TOWN TO BLEED OFF ANOTHER 2 BBLS FROM THE DP; DP PRESSURE AGAIN FELL TO 0 PSI AND SICP FELL TO 80 PSI. - IN 15 MINUTES, SIDPP WAS BACK UP TO 160 PSI AND SICP WAS STILL AT 80 PSI. 08:30 - 16:30 8.00 DRILL N DPRB INT1 WELL CONTROL. - BLEED OF DP PRESSURE; LEAVE OPEN AND MONITOR WELL -- WELL STILL BREATHING. - DECISION MADE WITH TOWN TO LEAVE DP BLEEDER OPEN FOR REMAINDER OF WELL CONTROL OPERATION. - BLEED OFF ANNULUS PRESSURE; BLED OFF 10 BBLS FROM 0800 -1200 AND 5 BBLS FROM 1200 -1630. WELLBORE BREATHING DIMISHED TO A TRICKLE, LESS THAN 1 BARREL IN ONE HOUR 16:30 - 18:00 1.50 DRILL N DPRB INT1 PJSM FOR POH AND OPEN ANNULAR PREVENTER. - MONITOR WELL FOR 1 AND A HALF HOURS; _ WELLBORE BREATHING -- CONFIRM BREATHING , FLOWBACK DECREASES. ONE BARREL RETURNS OVER THE HOUR. I � WELL CONTROL EVENT TRACTION IR - 3468175. 18:00 - 22:00 4.00 DRILL N DPRB INT1 POH FROM 11,244' TO 9,384'. - 25K OVERPULL AND SWABBING BETWEEN 11,169' AND 11,145'. - PUMP OUT AT 2 BPM, 520 PSI. - 25K OVERPULL WHILE PUMPING OUT AT 11,095', 10,980', 9,953', 9,850', 9,715', 9,670', AND 9,592'. - START TO SEE GRADUAL LOSSES AT 9,850'. - WIPE TIGHT AREAS WITHOUT PUMPING. Printed 6/11/2010 9:39:36AM • North America - ALASKA - BP Page 13 of 36 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 4/10/2010 End Date: 5/14/2010 X3- 00TWH -C (3,761,506.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:00AM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120"0 Long: 0148°34'29.198'W Active Datum: ORIG KELLY BUSHING @67.0ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 22:00 - 00:00 2.00 DRILL N DPRB INT1 CIRCULATE. - MONITOR WELL; WELL BREATHING. - STAGE PUMPS TO 400 GPM, 1,910 PSI FOR 525 BBLS. - HAVE EXTREME LOSSES OF 294 BBLS ( -50% RETURNS THROUGHOUT). - ALTHOUGH WE DIDN'T GET COMPLETE BU, HOLE UNLOADED SIGNIFICANTLY. - SHUT DOWN AND MONITOR WELL; NOTE SLIGHT LOSS. 4/25/2010 00:00 - 02:00 2.00 DRILL N DPRB INT1 MONITOR WELL AND WORK PIPE WHILE BUILDING MUD VOLUME IN PITS. - PU WT 155K, SO WT 105K. 02:00 - 02:30 0.50 DRILL N DPRB INT1 ATTEMPT TO ESTABLISH CIRCULATION AT 9,280'. - 200 GPM, 874 PSI. - VERY LITTLE TO NO RETURNS. - 10.3 PPG MW IN AND OUT. 02:30 - 03:30 . 1.00 DRILL N DPRB INT1 POH PUMPING OUT FROM 9,280' TO 8,907'. - PU WT 155K, SO WT 105K. - 120 GPM, 575 PSI. 03:30 - 04:30 1.00 DRILL N DPRB INT1 CIRCULATE. - 1 BPM, 380 PSI. - LOST 47 BBLS OF 60 BBLS PUMPED. - 10.3 PPG MW IN AND OUT. _ 04:30 - 06:30 2.00 DRILL N DPRB INT1 MONITOR WELL AND WORK PIPE WHILE BUILDING MUD VOLUME IN PITS. { - BUILD A 50 -BBL, 40 -PPB LCM PILL. 06:30 - 09:00 2.50 DRILL r N DPRB INT1 RIH FROM 8,907' TO 9,848' AND SPOT 50 -BBL, 40 -PPB LCM PILL. - PUMP OUT OF HOLE FROM 9,848' TO 9,290' AT 2 BPM, 615 PSI. 09:00 - 10:00 1.00 DRILL N DPRB INT1 ATTEMPT TO CIRCULATE, STAGING UP PUMPS FROM 125 TO 400 GPM. - 125 GPM, 650 PSI; 240 GPM, 1,100 PSI; 400 GPM, 2,180 PSI; AND BACK DOWN TO 350 GPM, 1,680 PSI BEFORE SHUTTING OFF THE PUMPS. - ONLY GOT BACK 40% OF WHAT WE PUMPED - - LINEAR LOSSES AS PUMP RATE INCREASED. - LOST 111 BBLS TOTAL DURING THIS ATTEMPT TO CIRCULATE. - 10.3 PPG MW IN AND OUT. 10:00 - 12:00 2.00 DRILL N DPRB INT1 PUMP OUT OF HOLE FROM 9,290' TO 7,409'. - 100 GPM, 542 PSI. - PU WT 145K, SO WT 90K. 12:00 - 12:30 0.50 DRILL N DPRB INT1 ATTEMPT TO CIRCULATE, STAGING UP PUMPS TO 125 GPM, 570 PSI; 250 GPM, 960 PSI. - LITTLE TO NO RETURNS BY END OF CIRCULATION; 57 OF 81 BBLS PUMPED WERE LOST. - 10.3 PPG MW IN AND OUT. Printed 6/11/2010 9:39:36AM • • North America - ALASKA - BR Page 14 of 36 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 4/10/2010 End Date: 5/14/2010 X3- O0TWH -C (3,761,506.00 USD) Project: Prudhoe Bay I Site: PB DS 15 Rig Name /No.: NABORS 7ES I Spud Date/Time: 1/20/1991 12:00:00AM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120 "0 Long: 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.Oft (above Mean Sea Level) Date I From - To Hrs Task Code NPT NPT Depth Phase I Description of Operations (hr) (ft) 12:30 - 19:00 6.50 DRILL N DPRB INT1 PUMP OUT OF HOLE FROM 7,409' TO 3,556'. - 2 BPM, 475 PSI. - PACKING OFF AND 25K OVERPULLS AT 5,502', 5,105', 4,975', AND 4,850'. - PUMPED AT 228 GPM, 655 PSI THROUGH UGNU FROM 4,850' TO 4,113' IN AN ATTEMPT TO CLEAN THE HOLE; SAW SIGNIFICANT UNLOADING OF UGNU SANDS ON THE SHAKERS. 19:00 - 20:00 I 1.00 DRILL N DPRB INT1 CBU X3 AT THE 9 -5/8" WINDOW. - STAGE PUMPS TO 400 GPM, 1,215 PSI FOR THE 1ST BU; 500 GPM, 1,680 PSI FOR THE 2ND BU; AND 550 GPM, 1,845 PSI FOR THE 3RD BU. - PUMPED 660 BBLS TOTAL. - SAW —25% INCREASE IN CUTTINGS (SAND AND CLAY) RETURNS AT BU STROKES. 20:00 - 00:00 4.00 DRILL N DPRB INT1 MONITOR WELL IN PREPARATION FOR HANC;INn BHA/DRILL STRING FROM RTTS /STORM PACKER FOR 14 -DAY INTERVAL BOP TEST DUE ON 25 APR 10 - WELLBORE BREATHED BACK 49 BBLS TO MIDNIGHT, WHEN IT WAS STILL FLOWING AT 1 I BBL EVERY 14 MINUTES. - ON 25 APR 10 AT 2215 HRS, LOU GRIMALDI, AOGCC INSPECTOR, WAIVED WITNESS TO OUR 14 -DAY INTERVAL BOP TEST SCHEDULED TO BE COMPLETED NLT 25 APR 10. BP WSL INFORMED HIM THAT WE WERE WAITING FOR THE WELL TO DIE IN ORDER TO RIH WITH OUR BHA AND DRILL STRING HANGING OFF THE HES RTTS STORM PACKER SO THAT WE COULD TEST BOP. HE GAVE US AN EXTENSION TO TEST BOP AFTER THE WELL DIED AND OUR BHA AND DRILL STRING COULD BE HUNG OFF ON THE STORM PACKER. Printed 6/11/2010 9:39:36AM • • North America - ALASKA - BP Page 15 of 36 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 4/10/2010 End Date: 5/14/2010 X3- 00TWH -C (3,761,506.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:00AM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120 "0 Long: 0148 °3429.198 "W Active Datum: ORIG KELLY BUSHING @67.0ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 4/26/2010 00:00 - 05:00 5.00 DRILL N DPRB INT1 MONITOR WELL IN PREPARATION FOR HANGING BHA/DRILL STRING FROM RTTS /STORM PACKER FOR 14 -DAY INTERVAL BOP TEST DUE ON 25 APR 10. - WELLBORE BREATHED BACK —6+ BBLS FROM MIDNIGHT TO 0430 HRS (55 BBLS TOTAL SINCE MONITORING BEGAN), WHEN IT WAS FINALLY DEAD FOR PURPOSES OF SETTING THE RTTS. - ON 25 APR 10 AT 2215 HRS, LOU GRIMALDI, AOGCC INSPECTOR, WAIVED WITNESS TO OUR 14 -DAY INTERVAL BOP TEST SCHEDULED ON THE 25 APR 10. BP WSL RAYMOND PLATT INFORMED HIM THAT WE WERE WAITING FOR THE WELL TO DIE IN ORDER TO RIH WITH OUR BHA AND DRILL STRING HANGING OFF THE HES RTTS /STORM PACKER SO THAT WE COULD TEST BOP. AN EXTENSION TO TEST BOP WAS GIVEN AFTER THE WELL DIED AND OUR BHA AND DRILL STRING COULD BE HUNG OFF ON THE STORM PACKER. 05:00 - 06:00 1.00 BOPSUR N DPRB INT1 RIH WITH BHA AND DRILL STRING TO 90' BELOW WELLHEAD ON HES RTTS /STORM PACKER. 06:00 - 07:00 1.00 BOPSUR P INT1 RU TO TEST BOP. 07:00 - 10:30 3.50 BOPSUR P INT1 TEST BOPE AND CHOKE MANIFOLD TO 250 PSI LOW AND 3,500 PSI HIGH FOR 5 MIN WITH 4" TEST JOINT. TEST ANNULAR TO 250 PSI LOW AND 2,500 PSI HIGH WITH 4" TEST JOINT FOR 5 Q., MIN. !,/ - AOGCC REP LOU GRIMALDI WAIVED WITNESS G�j OF THE TEST AT 2215 HRS ON 25 APR 10. TEST WITNESSED BY NAD TOURPUSHER LENWARD TOUSSANT/TOOLPUSHER LARRY WURDEMAN AND BP WSLS RAYMOND PLATT /DAVE NEWLON. 10:30 - 11:00 0.50 BOPSUR P INT1 RD BOP TEST EQUIPMENT AND BLOW DOWN LINES. 11:00 - 11:30 0.50 BOPSUR N DPRB INT1 RIH AND STING IN TO RTTS /STORM PACKER AND VERIFY THAT THERE IS NO TRAPPED PRESSURE BENEATH IT. - UNSEAT AND POH. - LD RTTS /STORM PACKER. 11:30 - 13:00 1.50 DRILL N DPRB INT1 CBU 1.5X _ - 337 BBLS, 300 GPM, 700 PSI. - PU WT 90K, SO WT 90K. - MONITOR WELL FOR 15 MINUTES AFTER PUMPS SHUT OFF; WELL STATIC. - MW 10.3 PPG IN AND OUT. 13:00 - 14:30 1.50 DRILL N DPRB INT1 POH FROM 3,556' TO 735'. - MONITOR WELL FOR 15 MINUTES; WELL STATIC. 14:30 - 16:30 2.00 DRILL N DPRB INT1 LD BHA # 4 FROM 735'. - BIT GRADE: 0, 2, CT, G, X, I, BU, TD. Printed 6/11/2010 9:39:36AM • North America - ALASKA - BP Page 16 of 36 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 4/10/2010 End Date: 5/14/2010 X3- 00TWH -C (3,761,506.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:00AM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120 "0 Long: 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.Oft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 16:30 - 17:30 1.00 DRILL N DPRB INT1 PU BHA # 5 TO 145'. - BHA # 5 CONSISTS OF: 8 -1/2" HUGHES MXL -1 TRI -CONE ROCK BIT (3x28, 1x16), NB IBS STAB W /PORTED FLOAT, 3 JTS 5" HWDP, HYDRAULIC JARS, BALL CATCHER, CCV, AND XO TO 4" DP. 17:30 - 19:30 2.00 DRILL N DPRB INT1 RIH TO 3,796'. - FILL PIPE EVERY 15 STANDS. 19:30 - 21:30 2.00 DRILL N DPRB INT1 CBU AT THE 9 -5/8" WINDOW. - 220 BBLS. lx BU - STAGE UP PUMPS TO 550 GPM. - 400 GPM, 670 PSI; 450 GPM, 775 PSI; 500 GPM, 890 PSI; 550 GPM, 1,045 PSI. - MONITOR WELL; WELL BREATHING; MONITOR FOR 1 HR UNTIL STATIC. - PU WT 90K, SO WT 90K. - MW 10.3 PPG IN AND OUT. 21:30 - 22:30 1.00 DRILL N DPRB INT1 RIH FROM 3,796' TO 5,016'. 22:30 - 00:00 1.50 DRILL N DPRB INT1 CBU. 399 BBLS. 1.4X BU - STAGE UP PUMPS TO 500 GPM; 866 STROKES /50 BBLS AT EACH PUMP RATE. - 100 GPM, 165 PSI, NO LOSSES; 200 GPM, 310 PSI, NO LOSSES; 300 GPM, 506 PSI, 1.5 -BBL LOSS; 400 GPM, 800 PSI, 1.8 -BBL LOSS; 500 GPM, 1,140 PSI, 2 -BBL LOSS. HOLE UNLOADED SIGNIFICANTLY AT BOTTOMS UP; PUMPED UNTIL SHAKERS CLEANED UP - MONITOR WELL; WELL BREATHING; CONFIRM RATE DECREASING SIGNIFICANTLY. - PU WT 108K, SO WT 98K. - MW 10.3 PPG IN AND OUT. 4/27/2010 00:00 - 00:30 0.50 DRILL N DPRB INT1 RIH FROM 5,016' TO 6,050'. 00:30 - 02:30 2.00 DRILL N DPRB INT1 CBU. - 598 BBLS; 1.7X BU. - STAGE UP PUMPS TO 500 GPM; 866 STROKES /50 BBLS AT EACH PUMP RATE. - 100 GPM, 196 PSI, NO LOSSES; 200 GPM, 370 PSI, NO LOSSES; 300 GPM, 620 PSI, NO LOSSES; 400 GPM, 962 PSI, NO LOSSES; 500 GPM, 1,325 PSI, 10 -BBL LOSS. - HOLE UNLOADED AT BOTTOMS UP. - MONITOR WELL; WELL BREATHING; CONFIRM RATE DECREASING. - PUWT110K,SOWT85K, ROT WT100K. - RPM 60. 02:30 - 03:00 0.50 DRILL N DPRB INT1 RIH FROM 6,050' TO 6,990'. Printed 6/11/2010 9:39:36AM . . North America - ALASKA - BP Page 17 of 36 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 4/10/2010 I End Date: 5/14/2010 X3- 00TWH -C (3,761,506.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:00AM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120"0 Long: 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.Oft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 03:00 - 04:30 1.50 DRILL N DPRB INT1 CBU. - 712 BBLS; 1.8X BU. - STAGE UP PUMPS TO 500 GPM; 866 STROKES /50 BBLS AT EACH PUMP RATE. - 100 GPM, 200 PSI, NO LOSSES; 200 GPM, 380 PSI, NO LOSSES; 300 GPM, 685 PSI, NO LOSSES; 400 GPM, 1,025 PSI, 2 -BBL LOSS; 500 GPM, 1,610 PSI, 20 -BBL LOSS. - HOLE UNLOADED AT BOTTOMS UP. - MONITOR WELL; WELL BREATHING; CONFIRM RATE DECREASING. - PU WT 110K, SO WT 90K, ROT WT 105K. - RPM 60, 5K TQ. - MW 10.3 PPG IN AND OUT. 04:30 - 05:00 0.50 DRILL N DPRB INT1 RIH FROM 6,990' TO 8,025'. 05:00 - 08:00 3.00 DRILL N DPRB INT1 CBU. - 1,155 BBLS; 2.5X BU. - STAGE UP PUMPS TO 500 GPM; 866 STROKES /50 BBLS AT EACH PUMP RATE. - 100 GPM, 236 PSI, NO LOSSES; 200 GPM, 440 PSI, NO LOSSES; 300 GPM, 760 PSI, NO LOSSES; 400 GPM, 1,127 PSI, NO LOSSES; 500 GPM, 1,475 PSI, 15 -BBL LOSS. - HOLE UNLOADED AT BOTTOMS UP. - MONITOR WELL; WELL BREATHING; CONFIRM RATE DECREASING. - PU WT 130K, SO WT 98K, ROT WT 112K. - RPM 60, 5K TQ. - MW 10.3 PPG IN AND 10.4 PPG OUT. 08:00 - 08:30 0.50 DRILL N DPRB INT1 RIH FROM 8,025' TO 8,966'. 08:30 - 11:30 3.00 DRILL N DPRB INT1 CBU. - 998 BBLS; 2X BU. - STAGE UP PUMPS TO 500 GPM; 866 STROKES /50 BBLS AT EACH PUMP RATE. - 100 GPM, 302 PSI, NO LOSSES; 200 GPM, 477 PSI, NO LOSSES; 300 GPM, 848 PSI, 3.8 -BBL LOSS; 400 GPM, 1,271 PSI, 3.1 BBL LOSS; 500 GPM, 1,739 PSI, 17 -BBL LOSS. - HOLE UNLOADED AT BOTTOMS UP. - MONITOR WELL; WELL BREATHING; CONFIRM RATE DECREASING. - PU WT 145K, SO WT 105K, ROT WT 120K. - RPM 80, 5K TQ. - MW 10.3 PPG IN AND 10.5 PPG OUT. 11:30 - 12:00 0.50 DRILL N DPRB INT1 RIH FROM 8,966' TO 9,718'. Printed 6/11/2010 9:39:36AM • • North America - ALASKA - SP Page 18 of 36 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 4/10/2010 End Date: 5/14/2010 X3- 00TWH -C (3,761,506.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:00AM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120 "0 Long: 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.0ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12:00 - 14:30 2.50 DRILL N DPRB INT1 CBU. - 861 BBLS; 1.6X BU. - STAGE UP PUMPS TO 500 GPM; 866 STROKES /50 BBLS AT EACH PUMP RATE. - 100 GPM, 293 PSI, NO LOSSES; 200 GPM, 490 PSI, NO LOSSES; 300 GPM, 865 PSI, 8.5 -BBL LOSS; 400 GPM, 1,296 PSI, 15 -BBL LOSS; 450 GPM, 1,555 PSI, 37 -BBL LOSS. - HOLE UNLOADED AT BOTTOMS UP. - MONITOR WELL; WELL BREATHING; CONFIRM RATE DECREASING SIGNIFICANTLY. - PU WT 160K, SO WT 108K, ROT WT 125K. - RPM 75, 6.5K TQ. - MW 10.3 PPG IN AND OUT. 14:30 - 18:00 3.50 DRILL N DPRB INT1 RIH FROM 9,718' TO 11,116'. - WASH DOWN 58 BBLS /STAND. - 250 GPM, 750 - 800 PSI. - RPM 40, 7K TQ. - TOOK 25K AT 9,830'. WORKED AND REAMED THIS TIGHT SPOT. - TOOK WEIGHT FROM 11,150' TO 11,222'. - WORKED TIGHT SPOTS. 18:00 - 19:00 1.00 DRILL N DPRB INT1 __RIH WASHING DOWN FROM 11,116' TO 11,180' HOLE TAKING 20 -30K SO WEIGHT AND TORQUE INCREASE FROM 7.5K TO 9 -10K. PSI INCREASE TO 900 PSI. LOSSES AT 60 BPH BEGAN AFTER HOLE TOOK WEIGHT. CONTINUE TO STROKE LAST FULL STAND. 20:00 - 22:00 2.00 DRILL N DPRB INT1 CBU X 2.5 STROKING STAND 113 (125 FEET OFF BOTTOM TO 30 FEET OFF BOTTOM) - 250 GPM, 850 PSI, LOSSES HEALED FROM 60 BPH TO —5 BPH. —60 BBLS LOST TO FORMATION BEFORE LOSSES TAPERED OFF. INCREASED PUMP RATE. - 300 GPM, 1,000 PSI, NO LOSSES; - 350 GPM, 1,260 PSI, 1.4 -BBL LOSS; - 400 GPM, 1,540 PSI, 6.2 -BBL LOSS; - 450 GPM, 1,807 PSI, NO LOSSES, PIT GAINING 10 BPH. - MW INCREASED AS HIGH AS 10.6 PPG AT BOTTOMS UP. - SAND AND CUTTINGS 1/2" THICK OVER SHAKERS - PU WT 185K, SO WT 125K, ROT WT 150K. - RPM 40, 7.5K TQ. - MW 10.3 PPG IN AND 10.4 PPG OUT. 22:00 - 23:30 1.50 DRILL N DPRB INT1 MONITOR WELL. - WELL BREATHING; CONFIRM RATE DECREASING. - FLOWED BACK 45 BBLS IN 90 MINUTES. - RATE DECREASED TO 1 BBL IN 4 MINUTES PRIOR TO CONTINUING. Printed 6/11/2010 9:39:36AM • • North America - ALASKA - BP Page 19 of 36 Operation Summary Report Common Well Name: 15- 27_DIMS F AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 4/10/2010 End Date: 5/14/2010 X3- 00TWH -C (3,761,506.00 USD) Project: Prudhoe Bay I Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:00AM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120 "0 Long: 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.0ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 23:30 - 00:00 0.50 DRILL N DPRB INT1 WASH TO BOTTOM FROM 11,222' TO 11,244'. - 250 GPM, 810 PSI. - 40 RPM, 6.5K TQ. - NO FILL. TAG UP ON DEPTH. - MW 10.3 PPG IN AND 10.4 PPG OUT. 4/28/2010 00:00 - 03:00 3.00 DRILL N DPRB INT1 CBU AT PRESENT TD OF 11,244'. - 1,023 BBLS; 1.6X BU. - 200 GPM, 630 PSI, NO LOSSES; 300 GPM, 1,005 PSI, 1 -BBL LOSS; 400 GPM, 1,493 PSI, 3 -BBL LOSS; 450 GPM, 1,792 PSI, 3 -BBL LOSS; 500 GPM, 2,136 PSI, 4.8 -BBL LOSS. - PUMPED UNTIL SHAKERS CLEAN. - PU WT 190K, SO WT 125K, ROT WT 150K. - RPM 40, 8K TQ. - ACHIEVED CONSISTENT MW 10.3 PPG IN AND 10.3 PPG OUT. 03:00 - 04:00 1.00 DRILL N DPRB INT1 CBU AT PRESENT TD OF 11,244' AT DESIRED DRILLING RATE. - 799 BBLS; 1.3X BU. - 450 GPM, 1,825 PSI. - 5 -BBUHR LOSS RATE. - MW 10.3 PPG IN AND OUT. 04:00 - 05:00 1.00 DRILL N DPRB INT1 MONITOR WELL. - WELL BREATHING; CONFIRM RATE DECREASING. - FLOWED BACK 18 BBLS IN 65 MINUTES. 05:00 - 06:30 1.50 DRILL N DPRB INT1 POH FROM 11,244' TO 10,282'. - PUMP OUT AT —2 BPM, 300 PSI TO KEEP FROM SWABBING HOLE. - PUWT185K,SOWT120K. 06 - 07:00 0.50 DRILL N DPRB INT1 MONITOR WELL. - WELL BREATHING; CONFIRM RATE DECREASING. - FLOWED BACK 1 BBL EVERY 13 MINUTES. 07:00 - 07:45 0.75 DRILL N DPRB INT1 POH FROM 10,282' TO 10,092'. - PUMP OUT AT —2 BPM, 300 PSI TO KEEP FROM SWABBING HOLE. - AT 10,092', PULLED TIGHT WITH 50K OVERPULLS AND PACK -OFF, BUT WAS ABLE TO WORK FREE AND CONTINUE CIRCULATING. PU WT 175K, SO WT 120K. 07:45 - 21:00 13.25 DRILL N DPRB INT1 BACKREAM OUT OF HOLE FROM 10,092' TO 4,265'. - AT 10,092', 315 GPM, 993 PSI, 40 RPM, 140K ROT WT. - AT 9,247', 400 GPM, 1,586 PSI, 40 RPM, 125K ROT WT. - AT 6,650', 450 GPM, 1,165 PSI, 100 RPM, 120K ROT WT. -AT 6,410', 500 GPM, 1,287 PSI, 105 RPM, 118K ROT WT. - HAD POSITIVE FLOW BETWEEN CONNECTIONS; CONFIRM BREATHING SLOWS RAPIDLY. Printed 6/11/2010 9:39:36AM • North America - ALASKA - BP Page 20 of 36 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 4/10/2010 End Date: 5/14/2010 X3- 00TWH -C (3,761,506.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:00AM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120 "0 Long: 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.0ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) L 1 (ft) 21:00 - 21:30 0.50 DRILL N DPRB INT1 POH ON ELEVATORS FROM 4,265' TO 3,781' AND INSIDE 9 -5/8" WINDOW. 1- WHILE BACKREAMING AT 4,190', TQ UP TO 113,680 FT -LBS (ON EPOCH) AND HAD BACKLASH AND 25K OVERPULL; WORKED TIGHT AREA AND BROUGHT TOP DRIVE TO ROTARY TO CONDUCT VISUAL INSPECTION. - DRILLER SET TOP DRIVE BRAKE TO STOP BACKLASH, AS TRAINED; GALLED THREADS ON TOP JT IN STAND AND ON SAVER SUB QUILL RESULTED FROM THIS BACKLASH. 21:30 - 22:30 1.00 DRILL N DPRB INT1 PJSM AND LD BAD JT AND CHANGE OUT SAVER SUB /QUILL ON TOP DRIVE. - THREADS WERE GALLED DURING BACKLASH. 22:30 - 23:00 0.50 DRILL N DPRB INT1 CBU AT THE 9 -5/8" WINDOW. - 220 BBLS, 500 GPM, 864 PSI. 23:00 - 23:30 0.50 DRILL N DPRB INT1 j MONITOR WELL. ' - WELL BREATHING; CONFIRM RATE DECREASING. - FLOWED BACK 1 BBL EVERY 12 MINUTES. 23:30 - 00:00 0.50 DRILL N DPRB INT1 POH FROM 3,795' TO 3,419'. 4/29/2010 00:00 - 01:15 1.25 DRILL N DPRB INT1 POH FROM 3,419' TO 143'. 01:15 - 02:00 0.75 DRILL N DPRB INT1 LD BHA # 5. - BIT GRADE: 1, 2, WT, G, E, 1/8, NO, BHA. 02:00 - 03:00 1.00 DRILL N DPRB INT1 PU BHA # 6 TO 236'. - BHA # 6 INCLUDES: 8 -1/2" SMITH XR+ TRI -CONE ROCK BIT JETTED 3X18, NEAR -BIT IBS STAB, ARC6, MWD, NM IBS STAB, 2 NM DCS, NM IBS STAB, NM DC, FLOAT /SAVER SUB, 1 JT 5" HWDP, HYDRAULIC JARS, BALL CATCHER, CCV CIRCULATION VALVE, 18 JTS 5" HWDP, AND XO TO 4" DP. 03:00 - 04:30 1.50 DRILL N DPRB INT1 RIH FROM 236' TO 3,790'. - SHALLOW -HOLE TEST MWD TOOLS AT 1,200' AT 450 GPM, 795 PSI; TEST GOOD. - ALSO CONDUCTED MWD TOOL TESTS FURTHER DOWNHOLE AT 3,790' THAT CONFIRMED ABILITY TO OPERATE AS LOW AS 340 GPM AT THIS DEPTH. 04:30 - 05:30 i 1.00 DRILL N DPRB INT1 SLIP AND CUT 81' OF DRILLING LINE. 105:30 - 10:30 5.00 DRILL N DPRB INT1 RIH FROM 3,790' TO 11,233 °. Printed 6/11/2010 9:39:36AM • North America - ALASKA - BP Page 21 of 36 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 4/10/2010 End Date: 5/14/2010 X3- 00TWH -C (3,761,506.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:00AM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120"0 Long: 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.0ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 10:30 - 15:00 4.50 ( DRILL N DPRB INT1 CBU. - STAGE UP PUMPS TO 500 GPM. - 300 GPM, 1,231 PSI. - 350 GPM, 1,500 PSI. 400 GPM, 1,855 PSI. - 450 GPM, 2,235 PSI. - 500 GPM, 2,625 PSI. - 90 RPM, 9 -10K TQ. - EXPERIENCED HIGHER TQ OF 12 -14K BETWEEN 11,222' AND 11,232'. - PU WT 205K, SO WT 120K, ROT WT 150K. - 10.3 PPG MW IN AND OUT. 15:00 - 16:00 1.00 DRILL N DPRB INT1 WASH FROM 11,233' TO BOTTOM AT 11,244'. - 500 GPM, 2,675 PSI. - 90 RPM, 9 -10K TO. - POH MAD PASSING FROM 11,244' TO 11,204' AT 80' /HR. - RIH TO 11,244'. 16:00 - 00:00 8.00 DRILL P INT1 DRILL AHEAD IN 8 -1/2" INTERMEDIATE HOLE FROM 11,244' TO 11,390' MD. - 30K WOB. - 500 GPM. - 2,680 PSI ON, 2,665 PSI OFF. - 90 -100 RPM, TQ ON 8.5K, OFF 8K. - PU WT 215K, SO WT 120K, ROT WT 152K. - CALC. ECD 10.76 PPG, ACTUAL ECD 11.0 PPG. - 10.3 PPG MW IN AND OUT. - ART 6.46, ADT 6.46. - FLOW CHECK CONNECTIONS AND CONFIRM THAT WELLBORE IS BREATHING. 4/30/2010 00:00 - 02:00 2.00 DRILL P INT1 DRILL AHEAD IN 8 -1/2" INTERMEDIATEHOLE FROM 11,390' TO 11,447' MD. _ - 25K WOB. - 500 GPM. - 2,700 PSI ON, 2,665 PSI OFF. - 110 RPM, TQ ON 9K, OFF 8K. - PU WT 220K, SO WT 120K, ROT WT 152K. - CALC. ECD 10.74 PPG, ACTUAL ECD 10.92 PPG. - ART 1.95, ADT 1.95. - 10.3 PPG MW IN AND OUT. - FLOW CHECK CONNECTIONS AND CONFIRM THAT WELLBORE IS BREATHING. 02:00 - 03:15 1.25 DRILL P INT1 CBU TO CONFIRM 7" CASING POINT PICK WITH GEOLOGISTS. - SAMPLES CONFIRMED PRESENCE OF GLAUCONITIC SANDS INDICATIVE OF BEING TOP SET INTHETSGRATBU. - 500 GPM, 2,622 PSI. - 10.3 PPG MW IN AND OUT. 03:15 - 03:30 0.25 DRILL P INT1 MONITOR WELL. - WELL BREATHING; CONFIRM RATE DECREASING. Printed 6/11/2010 9:39:36AM ! • North America - ALASKA - BP Page 22 of 36 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 4/10/2010 j End Date: 5/14/2010 X3- 00TWH -C (3,761,506.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:00AM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120"0 Long: 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.0ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase I Description of Operations (hr) (ft) 03:30 - 05:15 1.75 DRILL P INT1 I BACKREAM FROM 11,447' TO THRZ AT 10,905'. 1- 450 GPM, 2,278 PSI. - 90 RPM, 9.5K TQ. I - PU WT 220K, SO WT 120K, ROT WT 150K. 05:15 - 06:00 0.75 DRILL P INT1 WASH DOWN FROM 10,905' TO 11,160'. - WORKED THROUGH TIGHT SPOT AT 10,950'. REAMED DOWN FROM 11,100' TO 11,160'. - 450 GPM, 2,278 PSI. - 90 RPM, 9.5K TQ. - PU WT 220K, SO WT 120K, ROT WT 150K. 06:00 - 06:15 0.25 DRILL P INT1 WASH DOWN FROM 11,160' TO 11,447'. - 450 GPM, 2,278 PSI. - PU WT 220K, SO WT 120K, ROT WT 150K. 06:15 - 08:00 1.75 DRILL P INT1 CBU AT 8 -1/2" INTERMEDIATE HOLE TD OF 11,447'. - 500 GPM, 2,665 PSI. - 10.3 PPG MW IN AND OUT. 08:00 - 08:30 0.50 DRILL P INT1 MONITOR WELL. - WELL BREATHING; CONFIRM RATE DECREASING. - WELL GAVE BACK 1 BBL EVERY MINUTE AND DECREASED TO 1 BBL EVERY 6 MINUTES AT 30 MINUTES. 08:30 - 10:00 1.50 DRILL P INT1 PUMP OUT OF HOLE FROM 11,447' TO 10,544'. - 2 BPM, 350 PSI. - PU WT 220K, SO WT 120K. - MONITOR WELL FOR 15 MINUTES; WELLBORE BREATHING WITH VERY SLIGHT FLOW BACK THAT DECREASES. 10:00 - 11:30 1.50 DRILL P INT1 PUMP OUT OF HOLE FROM 10,544' TO 9,619'. - 2 BPM, 340 PSI. - PUWT190K,SOWT115K. - MONITOR WELL FOR 15 MINUTES; WELLBORE BREATHING WITH VERY SLIGHT FLOW BACK THAT DECREASES. 11:30 - 12:00 0.50 DRILL P INT1 PUMP OUT OF HOLE FROM 9,619' TO 9,337'. - ATTEMPT TO POH ON ELEVATORS, BUT HAVE TO PUMP OUT DUE TO SWABBING. - 2 BPM, 330 PSI. 12:00 - 22:00 10.00 DRILL P INT1 BACKREAM OUT OF HOLE FROM 9,337' TO 4,261'. -400 GPM, 1,090 PSI. - 90 RPM, 3K TQ. - PU WT 115K, SO WT 100K, ROT WT 115K. - 11.06 PPG ACTUAL ECD. - 10.3 PPG MW IN AND 10.3+ PPG OUT. Printed 6/11/2010 9:39:36AM • S North America - ALASKA - BP Page 23 of 36 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 4/10/2010 End Date: 5/14/2010 X3- 00TWH -C (3,761,506.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:00AM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120 "0 Long: 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.0ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 22:00 - 23:30 1.50 DRILL P INT1 PUMP OUT OF HOLE FROM 4,261' TO INSIDE THE 9 -5/8" WINDOW AT 3,790'. - 406 GPM, 1,093 PSI. - PU WT 100K, SO WT 100K. - 20K OVERPULL AT 4,177'; EVENTUALLY WORKED THROUGH BY SLACKING DOWN, TURNING PIPE 180 DEGREES, AND PULLING THROUGH. - 10K OVERPULL AT 4,184' AND 4,123'; WORKED THROUGH WITH NO ISSUE. - MONITOR WELL FOR 15 MINUTES; WELLBORE BREATHING WITH SLIGHT FLOW BACK THAT DECREASES. 23:30 - 00:00 0.50 DRILL P 1 INT1 CBU. - 409 GPM, 1,052 PSI. - RECIPROCATE FROM 3,790' TO 3,696'. - PU WT 100K, SO WT 100K, ROT WT 100K. - 80 RPM. - 10.3 PPG MW IN AND OUT. 5/1/2010 j 00:00 - 01:30 1.50 DRILL P INT1 POH FROM 3,790' TO 841'. 01:30 - 03:00 1.50 DRILL P ! INT1 LD BHA # 6 FROM 841'. - BIT GRADE: 1, 2, WT, G, E, 1/8, RG, TD. 03:00 - 03:30 0.50 BOPSUR P INT1 MONITOR WELL FOR 30 MINUTES. - WELLBORE BREATHING, BUT FLOWBACK DECREASED RAPIDLY; WELL STATIC UPON CONCLUSION OF MONITORING PERIOD. 03:30 - 05:00 1.50 BOPSUR P INT1 t;HANGE OUT 3 -1/2" X 6" VBRS FOR 7" 2pb FIXED -BORE RAMS. , - TEST WITH 7" TEST JOINT TO 250 PSI LOW AND 3,500 PSI HIGH FOR 5 CHARTED MINUTES. 05:00 - 07:30 2.50 CASING P INT1 RU TO RIH WITH 7 ", 26 #, L -80, TC -II LINER. 07:30 - 00:00 16.50 1 CASING P INT1 RIH WITH 7 ", 26 #, L -80, TC -II LINER TO 7,631'. - PJSM WITH ALL HANDS INVOLVED. - MU SHOE TRACT AND BAKERLOK EACH CONNECTION. - TORQUE TURN CONNECTIONS; AVERAGE MU TQ 10,100 FT -LBS. - FILL EVERY 10 STANDS AND BREAK CIRCULATION EVERY 20 STANDS. - PUMP 1 LINER VOLUME, 98 BBLS AT 3 BPM, 1400 PSI AT THE 9 -5/8" WINDOW. 1- DURING LAST CIRCULATION AT 6,815' AT 2 BPM, 400 PSI LOST 75 BBLS /HR. - PU WT 210K , SO WT 125K. - 10.3 PPG MW IN AND OUT. 5/2/2010 00:00 - 01:00 1.00 CASING P INT1 RIH WITH 7 ", 26 #, L -80, TC -II LINER FROM 7,631' TO 7,756'. - TORQUE TURN CONNECTIONS; AVERAGE MU TQ 10,100 FT -LBS. - PU WT 215K , SO WT 130K. 01:00 - 02:00 1.00 CASING P INT1 RD LINER RUNNING EQUIPMENT AND CLEAN AND CLEAR RIG FLOOR. _ Printed 6/11/2010 9:39:36AM S North America - ALASKA - BP Page 24 of 36 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 4/10/2010 End Date: 5/14/2010 X3- 00TWH -C (3,761,506.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:00AM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120 "0 Long: 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.0ft (above Mean Sea Level) Date j From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) ( 02:00 - 02:30 0.50 CASING P INT1 MU AND RIH WITH 7" X 9 -5/8" BAKER "HRD -E" ZXPN LINER TOP PACKER AND FLEX -LOCK LINER HANGER TO 7,794'. - FILLED PBR WITH PALM IX. - VERIFIED SHEAR PINS. 02:30 - 06:30 4.00 CASING P INT1 RIH WITH 7 ", 26 #, L -80, TC -II LINER FROM 7,794' TO 9,545' ON 5' HWDP SINGLES FROM THE PIPESHED AND THEN 5" HWDP AND 4" DP STANDS FROM THE DERRICK. - TRIED TO RE- ESTABLISH CIRCULATION AFTER RD CASING EQUIPMENT AND PU LINER TOP PACKER AND HANGER, BUT NEAR COMPLETE LOST CIRCULATION RESULTED. - DECISION MADE TO CONTINUE TO RIH. - PU WT 220K, SO WT 130K. -10.3 PPG MW IN. 06:30 - 09:00 2.50 CASING P INT1 RIH FROM 9,545' TO 11,436'. - ATTEMPT CIRCULATION AT 10,800', BUT STILL PUMPING FLUIDS AWAY WITHOUT RETURNS AT 2 BPM, 423 PSI. - PU WT 325K, SO WT 145K. 09:00 - 09:30 0.50 CASING P INT1 MU LINER CEMENT HEAD AND RIH TO 11,447'. - WORKED PIPE WITH PU WT 340K AND SO WT 145K AND TAGGED BOTTOM ON DEPTH. - WASHED TO BOTTOM AT 2 BPM. 09:30 - 12:00 2.50 CEMT P INT1 CBU. - 2 BPM, 500 PSI. - HOLD PJSM WITH ALL HANDS INVOLVED IN CEMENT JOB. - 75% LOSS RATE (1.5 BBLS FOR EVERY 2 BBLS PUMPED). - STROKED PIPE 2 -3 FEET AT SURFACE BETWEEN 350K & 100K HOOKLOAD. - STAGED PUMPS UP TO 6 BPM, 900 PSI AND ACHIEVED 75% RETURNS BEFORE CEMENT JOB. Printed 6/11/2010 9:39:36AM North America - ALASKA - BP Page 25 of 36 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 4/10/2010 End Date: 5/14/2010 X3- 00TWH -C (3,761,506.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:00AM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 17'58.120"0 Long: 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.0ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12:00 - 15:00 3.00 CEMT P INT1 7" INTERMEDIATE LINER PRIMARY CEMENT JOB. - PUMPED 30.7 BBLS OF 11.5 PPG MUDPUSH II STARTING AT 1225 HRS. - PT LINES TO 4,500 PSI; TESTED GOOD. - PUMPED 39.4 BBLS OF 15.8 PPG CLASS G CEMENT STARTING AT 1244 HRS; PUMPED @ 5 BPM, WITH FINAL CIRCULATING PRESSURE AT 275 PSI. - DROPPED DRILL PIPE WIPER DART (POSITIVE INDICATION WHEN LEAVING CEMENT HEAD). - PUMPED 5 BBLS FRESH WATER TO RINSE CEMENTER LINES AND BEGIN DISPLACEMENT. - SWITCHED TO RIG PUMPS WITH 10.3 PPG LSND FOR THE REST OF THE DISPLACEMENT. - LATCH UP WITH LINER WIPER PLUG AT 528 STROKES AND SAW A 400 PSI SPIKE. - DISPLACED WITH 325 ADDITIONAL BBLS AT 5 11.A( BPM, 442 -832 PSI UNTIL 5 BBLS BEFORE 74 BUMPING THE PLUG. LIFTING PRESSURE SEEN C AT 3409 STROKES (545 PSI) UNTIL 4610 STROKES (830 PSI). PUMP PRESSURE REMAINED 830 PSI UNTIL PUMP REDUCTION. RETURNS GRADUALLY FELL OFF AFTER 830 PSI REACHED. ,SLOWED THE PUMP TO 2 BPM I I I FOR BUMPING PLUG. BUMPED PLUG AT 5,675 STKS, 330 BBLS TOTAL DISPLACEMENT AND PRESSURED UP TO 3,000 PSI TO SET HANGER. - WELL STILL BREATHING BACK. MONITOR RETURNS - DECREASING. - SET DOWN 75K TO VERIFY HANGER SET. - PRESSURED UP TO 4,238 PSI TO RELEASE THE LINER RUNNING TOOL. - BLED OFF PRESSURE AND CHECKED FLOATS FLOATS HELD. - PICKED UP TO EXPOSE DOGS. PU WEIGHT 120K. - SET DOWN 30K AND FELT SURFACE INDICATION OF PACKER SET AT 90K; REPEATED WITH ROTATION. ONCE PACKER SET, RETURNS BREATHING FROM WELL STOPPED. - PRESSURE UP TO 1000 PSI AND PU TO CIRCULATE. - PRESSURED UP TO 1,000 PSI TO STING OUT OF THE LINER TOP PACKER. - TOTAL CEMENT PUMPED: TAIL SL URRY, 15.8 PPG -- 39.4 BBLS, 207 SKS, 1.17 CU FT/SK._ ** *CEMENT IN PLACE AT 1408 HRS.*** 15:00 - 15:30 0.50 CEMT P INT1 CBU. - 221 GPM, 900 PSI. 15:30 - 16:00 0.50 CEMT P INT1 I LD TOP DRIVE CEMENT HEAD. Printed 6/11/2010 9:39:36AM North America - ALASKA - SP Page 26 of 36 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 4/10/2010 End Date: 5/14/2010 X3- 00TWH -C (3,761,506.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:00AM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120 "0 Long: 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.0ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 16:00 - 17:00 1.00 CEMT P LNR1 PRESSURE TEST 7" LINER TO 3,500 PSI FOR 30 CHARTED MINUTES. LOST 9 PSI IN FIRST 15 MINUTES AND GAINED 3 PSI IN SECOND 15 J _ , MINUTES. 17:00 - 20:30 3.50 CEMT P LNR1 POH RACKING BACK 4" AND LAYING DOWN 5" HWDP. LD LINER RUNNING TOOL - TATTLE TALE ON RUNNING TOOL SHEARED, INDICATING PACKER SET. 20:30 - 23:30 3.00 BOPSUR P LNR1 CHANGE UPPER PIPE RAMS TO 3 -1/2" X 6" VARIABLES. RU AND TEST UPPER PIPE RAMS WITH 4" TEST JOINT TO 250 PSI LOW & 3,500 PSI HIGH; CHARTED TEST; TEST GOOD. 23:30 - 00:00 0.50 CEMT P 1 LNR1 PJSM. PU 6 -1/8" DRILLING BHA #7 W/ HUGHES EP7258 INSERT BIT, 7/8 2 -STAGE PD MOTOR 1.5 ABH W /FLOAT, NM STAB, NM FLEX LEAD DC, IMPULSE MWD, 3EA NM FLEX DC, BALL CATCHER, CCV, HYD JARS. 5/3/2010 00:00 - 02:00 2.00 CEMT P INT1 PU/RIH WITH BHA # 7, WHICH CONSISTS OF: 6 -1/8" HUGHES EP7258 INSERT BIT, 7/8 2 -STAGE PD MOTOR 1.5 ABH W /FLOAT, NM STAB, NM FLEX LEAD DC, IMPULSE MWD, 3EA NM FLEX DC, BALL CATCHER, CCV, AND HYD JARS. - RIH TO 243'. 02:00 - 05:30 3.50 CEMT P INT1 RIH FROM 243' TO 4,164' WITH BHA # 7 ON 126 4" DP SINGLES FROM THE PIPESHED. 05:30 - 08:30 3.00 CEMT P INT1 RIH FROM 4,164' TO 11,362' WITH BHA # 7 ON 4" DP STANDS FROM THE DERRICK. 08:30 - 09:30 1.00 CEMT N CEMT 11,362.0 INT1 DRILL OUT SHOE TRACT FROM 11,362' TO 11,442'. - 200 GPM, 1,622 PSI. - 60 RPM, 9K TQ. - PU WT 180K, SO WT 100K, ROT WT 125K. - TAG UP ON LANDING COLLAR ON DEPTH AT 11,362'. - DRILL UP LANDING COLLAR, BUT FIND NO CEMENT BELOW IT. - WASH DOWN TO FLOAT COLLAR AND TAG UP ON DEPTH AT 11,401'. - DRILL UP FLOAT COLLAR, BUT FIND NO CEMENT BELOW IT. - WASH DOWN TO FLOAT SHOE AND TAG UP ON DEPTH AT 11,446'. 09:30 - 10:00 0.50 CEMT N CEMT 11,362.0 INT1 CBU. - 250 GPM, 1,781 PSI. - SOME RETURNS SMELLED OF CEMENT; PH WAS 11.6. Printed 6/11/2010 9:39:36AM North America - ALASKA - BP Page 27 of 36 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: RE- ENTER- ONSHORE (RON) 1 Start Date: 4/10/2010 End Date: 5/14/2010 X3- 00TWH -C (3,761,506.00 USD) 1 Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:00AM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120 "0 Long: 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.0ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) i (ft) 10:00 - 11:00 1.00 CEMT N CEMT 11,362.0 INT1 DRILL OUT FLOAT SHOE AND 2' OF NEW FORMATION IN 6 -1/8" HOLE TO 11,449'. AFTER DRILLING THROUGH SHOE, ENCOUNTER LOSSES OF 35 BBLS /HR. - 200 GPM, 1,622 PSI. - 60 RPM, 9K TQ. - PU WT 180K, SO WT 100K, ROT WT 125K. - ART .08, ADT .08. -10.3 PPG MW. 11:00 - 12:00 1.00 CEMT N CEMT 11,362.0 INT1 RU AND PERFORM LOT TO 11.2 PPG EMW. - SURFACE PRESSURE = 577 PSI; HELD FOR 10 MINUTES. - MW 10.3 PPG. - BLED OFF TO 335 PSI AFTER 10 MINUTES. - CONSULT WITH TOWN ENGINEER TO DISCUSS WAY AHEAD. 12:00 - 13:00 1.00 CEMT N CEMT 11,362.0 INT1 CBU. - 2 BPM, 750 PSI; 25 BBUHR LOSS RATE. - STAGED UP TO 5 BPM, 1,665 PSI AND SAW 1100 BBL/HR LOSS RATE. - REDUCED TO 4 BPM, 1,095 PSI AND SAW 60 BBL /HR LOSS RATE. - REDUCED TO 2 BPM, 750 PSI AND SAW NO LOSSES. - 30 BBLS TOTAL LOST DURING CIRCULATION. - MW 10.3 PPG IN AND 10.2 PPG OUT. 13:00 - 14:30 1.50 CEMT N CEMT 11,362.0 INT1 RU AND PERFORM LOT TO 11.0 PPG EMW. - SURFACE PRESSURE = 446 PSI; HELD FOR 13 MINUTES. - MW 10.3 PPG. - BLED OFF TO 203 PSI AFTER 13 MINUTES. - MONITOR WELL; WELL BREATHING; FLOW DECREASING. 14:30 17:00 2.50 CEMT N CEMT 11,362.0 INT1 POH FROM 11,413' TO 11,319'. - MONITOR WELL; WELL BREATHING; FLOW DECREASING. - PUMP DRY JOB. - PU WT 120K, SO WT 100K. - SWAB WHILE POH, SO MAKE DECISION TO PUMP OUT. - MW 10.25 PPG OUT. 17:00 - 00:00 7.00 CEMT N CEMT 11,362.0 INT1 PUMP OUT OF HOLE FROM 11,319' TO 6,996'. - 181 GPM, 912 PSI. - TRY TO POH ON ELEVATORS EVERY 10TH STAND, BUT STILL SWABBING. 5/4/2010 00:00 - 04:30 4.50 CEMT N i CEMT 11,362.0 INT1 j PUMP OUT OF HOLE FROM 6,996' TO 3,658'. - 170 GPM, 865 PSI. - TRY TO POH ON ELEVATORS EVERY 10TH STAND, BUT STILL SWABBING UNTIL WE GET ABOVE THE LINER TOP AT 3,658'. - MONITOR WELL AT LINER TOP AT 3,658'; WELL STATIC. - MW 10.5 PPG IN AND OUT. Printed 6/11/2010 9:39:36AM • • North America - ALASKA - BP Page 28 of 36 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 4/10/2010 End Date: 5/14/2010 X3- 00TWH -C (3,761,506.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:00AM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120 "0 Long: 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.0ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 04:30 - 07:00 2.50 CEMT N CEMT 11,362.0 INT1 POH ON ELEVATORS FROM 3,658' TO 224'. - NO SWABBING. 07:00 - 08:00 1.00 CEMT N CEMT 11,362.0 INT1 POOH AND LD BHA #8. 108:00 - 10:30 2.50 CEMT N CEMT 11,362.0 INT1 MU EZSV SQUEEZE PACKER AND RIH ON 4" DP j TO 3614' MD. 10:30 - 11:30 1.00 CEMT N CEMT 11,362.0 INT1 CIRCULATE SURFACE TO SURFACE VOLUME - 6 BPM, 585 PSI 11:30 - 18:00 6.50 CEMT N CEMT 11,362.0 INT1 RIH WITH EZSV 4366' MD TO 11354' MD. - 205K PUW, 100K SOW 18:00 - 19:00 1.00 CEMT N CEMT 11,362.0 INT1 ROTATE 35 TURNS TO THE RIGHT TO SET TOP SLIPS ON EZSV. PULL TO 290K TO SET EZSV. UNSTING FROM EZSV AND ROTATE 41 TURNS TO THE RIGHT TO ENGAGE KEYS ON RUNNING TOOL. RU TIW VALVE AND CEMENT LINE TO DRILL PIPE _ 19:00 - 21:00 2.00 CEMT N CEMT 11,362.0 INT1 ESTABLISH THE FOLLOWING CIRCULATION RATES: - 84 GPM, 600 PSI, 3.9% MFOP, - 130 GPM, 750 PSI, 8.5 % MFOP - 165 GPM, 922 PSI, 11.3% MFOP - 211 GPM, 1131 PSI, 13.8% MFOP CLOSE ANNULAR PREVENTOR AND TEST EZSV TO 2000 PSI FROM ABOVE FOR 5 MIN STING INTO EZSV WITH RUNNING TOOL AND ESTABLISH THE FOLLOWING INJECTION RATES: - 26 GPM, 300 PSI - 44 GPM, 410 PSI - 60 GPM, 445 PSI - 84 GPM, 490 PSI - 103 GPM, 520 PSI - 127 GPM, 560 PSI Printed 6/11/2010 9:39:36AM S North America - ALASKA - BP Page 29 of 36 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: RE- ENTER- ONSHORE (RON) I Start Date: 4/10/2010 End Date: 5/14/2010 1X3- 00TWH -C (3,761,506.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:00AM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120 "0 Long: 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.0ft (above Mean Sea Level) Date From - To I Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 21:00 - 00:00 3.00 CEMT N CEMT 11,362.0 INT1 LINE UP TO TAKE RETURNS THROUGH CHOKE MANIFOLD AND CIRCULATE THROUGH GAS /MUD SEPERATOR AT 2 BPM AND 420 PSI. CLOSE ANNULAR PREVENTER PJSM WITH RIG CREW, HALLIBURTON HAND AND CEMENT CREW. START BATCH MIXING 75 BBLS CEMENT AT 21:25 HRS PUMP 10 BBLS OF WATER AHEAD AT 3 BPM SHUT DOWN AND PRESSURE TEST LINES TO 4000 PSI BE IN PUMPING 75.2 BBLS. 361 SKS OE 15.8 PPG CLASS G CEMENT 1.17 CUFT /SK - HOLD —1250 PSI BACK PRESSURE ON CHOKE 1 WHILE PUMPING CEMENT. - STAGE CEMENT RATE UP FROM 1 BPM TO 3 BPM FOLLOW CEMENT WITH 10 BBLS OF WATER SHUT DOWN, CLOSE CHOKE AND SWAP OVER TO RIG PUMPS DISPLACE CEMENT WITH 20 BBLS OF 10.4 PPG LSND AT 3 BPM AND 1157 PSI WHILE CONTINUING TO HOLD —1250 PSI ON THE CHOKE SHUT DOWN AND CLOSE CHOKE. STRIP IN AND STING INTO EZSV. BEGIN DISPLACING CEMENT TO FORMATION. ADJUST FLOW RATE TO KEEP BOTTOM HOLE PRESSURE BELOW A 12.5 PPG FRACTURE GRADIENT - 3 BPM, 51 PSI, 5 BBLS DISPLACED AFTER STINGING INTO EZSV - 3 BPM, 52 PSI, 16 BBLS DISPLACED - 5 BPM, 134 PSI, 20 BBLS DISPLACED (CEMENT AT CASING SHOE) - 3 BPM, 322 PSI, 26 BBLS DISPLACED - 3 BPM, 450 PSI, 37 BBLS DISPLACED - 2.5 BPM, 431 PSI, 42 BBLS DISPLACED - 2 BPM, 480 PSI, 49 BBLS DISPLACED - 1.5 BPM, 527 PSI, 60 BBLS DISPLACED - 1 BPM, 525 PSI, 64 BBLS DISPLACED - .5 BPM, 543 PSI, 70 BBLS DISPLACED TOTAL OF 51 BBLS OF CEMENT DISPLACED OUTSIDE OF CASING 1 SHUT DOWN PUMPS AND HOLD 353 PSI ON 1 DRILL PIPE FOR 10 MIN. Printed 6/11/2010 9:39:36AM • North America - ALASKA - BP Page 30 of 36 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 4/10/2010 End Date: 5/14/2010 1X3- 00TWH -C (3,761,506.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:00AM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120 "0 Long: 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.0ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 5/5/2010 00:00 - 01:00 1.00 CEMT N CEMT 11,362.0 INT1 HOLD 353 PSI ON DP FOR 10 MIN. I ! SQUEEZE 4 BBLS OF CEMENT - .5 BPM, 594 PSI SHUT IN AND HOLD 540 PSI ON DP FOR 10 MIN. I I SQUEEZE 4 BBLS OF CEMENT - .5 BPM, 693 PSI SHUT IN AND HOLD 640 PSI ON DP FOR 10 MIN SQUEEZE 2 BBLS OF CEMENT - .5 BPM, 825 PSI SHUT IN AND HOLD 645 PSI ON DP FOR 5 MIN UNSTING FROM CEMENT RETAINER CLOSING CEMENTING VALVE AND TRAPPING 640 PSI UNDER RETAINER. DRILLPIPE PRESSURE FELL OFF TO ZERO. RIG DOWN TIW AND HEAD PIN/ CEMENTING LINE. 01:00 - 02:30 1.50 CEMT N CEMT 11,362.0 INT1 POOH TWO STANDS TO 11,069' MD. DROP FOAM BALL AND CIRCULATE SURFACE TO SURFACE VOLUME AT 8 BPM AND 1,676 PSI. — 4 BBLS OF CEMENT CIRCULATED BACK TO SURFACE. SHUT DOWN AND MONITOR WELL. PUMP DRY JOB. 02:30 - 08:00 5.50 CEMT N CEMT 11,362.0 INT1 POOH FROM 11,139' MD TO SURFACE AND LD EZSV STINGER. CLEAN AND CLEAR RIG FLOOR 08:00 - 10:00 2.00 CEMT P INT1 PULL WEAR RING AND INSTALL TEST PLUG. CHANGE OUT BLIND RAMS TO BLIND /SHEAR RAMS. 10:00 - 10:30 0.50 CEMT P INT1 RU TO TEST BOPE 10:30 - 18:00 7.50 CEMT P INT1 TEST CHOKE MANIFOLD AND BOPE STACK WITH 2 -7/8" AND 4 -1/2" TEST JOINTS TO 250 PSI LOW /3500 PSI HIGH. TEST ANNULAR PREVENTER WITH 2 -7/8" TEST JOINT TO 250 PSI BOP LOW /2500 PSI HIGH. BLIND /SHEAR RAMS FAILED TEST, CHANGE OUT BLIND /SHEAR RAMS, PASS TEST. WITNESS TO THE TEST WAIVED BY AOGCC REP. JEFF JONES. TEST WITNESSED BY BP WSL MATT MARTYN AND NABORS TOOLPUSHER LARRY WURDERMAN. 18:00 - 18:30 0.50 1 CEMT P INT1 LD TEST JOINTS. RD TEST EQUIPMENT AND BLOW DOWN LINES AND CHOKE MANIFOLD. INSTALL WEAR BUSHING. 18:30 - 21:00 2.50 CEMT N CEMT 11,362.0 INT1 PU BHA #8: 6 -1/8" HUGHES BIT EP7258, 1.5 DEG MUD MOTOR, IMPULSE MWD, ADN4 AND CCV CIRC VALVE TO 224' MD. - 30K PUW, 30K SOW 21:00 - 00:00 3.00 CEMT N CEMT 11,362.0 INT1 RIH ON 4" DRILL PIPE FROM 224' TO 5961' MD. SAW BHA FALL PAST LINER TOP WITH 15K ON DEPTH Printed 6/11/2010 9:39:36AM S I 10 North America - ALASKA - BP Page 31 of 36 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 4/10/2010 End Date: 5/14/2010 X3- O0TWH -C (3,761,506.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:00AM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120 "0 Long: 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.0ft (above Mean Sea Level) Date From - To Hrs I Task Code I NPT NPT Depth Phase Description of Operations (hr) (ft) 5/6/2010 00:00 - 02:00 2.00 CEMT N I CEMT 11,362.0 INT1 CONTINUE TO RIH FROM 5961' TO 11,000' MD 02:00 - 02:30 0.50 CEMT N CEMT 11,362.0 INT1 CUT AND SLIP 112' OF DRILLING LINE 02:30 - 03:00 0.50 CEMT N , CEMT 11,362.0 INT1 SERVICE TOP DRIVE AND DRAW WORKS 03:00 - 03:30 0.50 CEMT N CEMT 11,362.0 INT1 WASH DOWN FROM 11,000' AND TAKE WEIGHT AT 11,179' MD. REAM DOWN FROM 11,179' MD AND TAG UP ON EZSV AT 11,346' MD. 03:30 - 05:30 2.00 • CEMT P INT1 DRILL ON PLUG FROM 11 346' MD TO 1 s' u - 205 GPM, 1735 PSI - 60 RPM, 10K TORQUE • - 10K WOB 05:30 - 06:30 1.00 CEMT P INT1 DRILL CEMENT FROM 11,348' TO 11,449' MD AND 1' OF NEW FORMATION TO 11450' MD. 06:30 - 07:30 1.00 CEMT P INT1 RU AND PERFORM FIT TO 660 PSI (12 PPG EMW) WITH 10.45 PPG MUD IN HOLE AT 11450' MD, 8091' TVD 07:30 - 12:00 4.50 CEMT P INT1 DISPLACE WELL TO 8.6 PPG FLOW PRO MUD AT 250 GPM AND 2065 PSI. 100 BBLS FRESH WATER SPACER FOLLOWED BY 50 BBL STEEL LUBE PILL PUMPED AHEAD OF 8.6 FLOW PRO. PRESSURE SPIKE TO 3650 PSI DURING DISPLACEMENT AND LOST COMMUICATION TO MWD TOOL, BUT ABLE TO CIRCULATE. PRESSURE UP TO 3100 PSI. SHUT DOWN AND WORK TO REGAIN CIRCULATION. ABLE TO REGAIN CIRCULATION AND COMMUNICATION WITH MWD. CONTINUE TO DISPLACE TO 8.5 PPG FLOW PRO MUD. JUST PRIOR TO FLOW PRO RETURNS TO PIT, LOST MWD SIGNAL AGAIN. 12:00 - 13:00 1.00 CEMT N CEMT 11,450.0 INT1 STAGE PUMPS UP TO REGAIN COMMUNICATION WITH MWD TOOL. UNABLE TO REGAIN SIGNAL. 13:00 - 19:00 6.00 CEMT N CEMT 11,450.0 INT1 MONITOR WELL. POOH FROM 11413' MD TO BHA AT 224' MD 19:00 - 21:30 2.50 CEMT N I CEMT 11,450.0 INT1 LD BHA #8. FOUND CEMENT CHUNKS IN CCV PROFILE, IMPULSE MWD HAD DEBRIS INSIDE AND ONE BIT NOZZLE PLUGGED WITH CEMENT. PULLED ADN SOURCE WITHOUT PROBLEMS. EP7250 HUGHES BIT GRADED: 1- 1- RG- G- 0- I- PN -DTF — - - --- – - - -- — -- -- 21:30 - 22:00 0.50 CEMT N CEMT 11,450.0 INT1 CLEAN AND CLEAR RIG FLOOR. 22:00 - 23:00 1.00 CEMT N CEMT 11,450.0 INT1 MU NEW EP7250 HUGHES BIT AND NEW 1.5 DEG MOTOR. 23:00 - 00:00 1.00 CEMT N CEMT 11,450.0 INT1 LD MOTOR AND BIT IN PIPE SHED. DECIDE TO LD FIRST 20 STANDS OF DRILL PIPE AND SEND TO TUBOSCOPE TO CLEAR OUT CEMENT. 5/7/2010 00:00 - 02:00 2.00 CEMT N CEMT 11,450.0 INT1 RIH WITH 20 STANDS OF DRILL PIPE AND LD. CEMENT CHUNKS FALLING OUT OF DP WHEN MAKING CONNECTIONS 02:00 - 03:30 1.50 CEMT N CEMT 11,450.0 INT1 MU BHA #9: 6 -1/8" EP7258 HUGHES BIT, 1.5 DEG MOTOR, IMPULSE MWD, ADN4, CCV CIRC. VALVE AND JARS. Printed 6/11/2010 9:39:36AM • North America - ALASKA - BP Page 32 of 36 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: RE- ENTER- ONSHORE (RON) I Start Date: 4/10/2010 End Date: 5/14/2010 X3- 00TWH -C (3,761,506.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:00AM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120 "0 Long: 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.0ft (above Mean Sea Level) Date From - To Hrs Task I Code NPT NPT Depth Phase Description of Operations (hr) (ft) 03:30 - 05:00 1.50 CEMT N CEMT 11,450.0 INT1 RIH WITH BHA #9 ON DRILL PIPE TO 695' MD. LD 5 STANDS OF DRILL PIPE THAT HAD CEMENT FALLING OUT OF THE THEM. THE REST OF THE DRILL PIPE DID NOT SHOW SIGNS OF CEMENT WHEN HIT WITH HAMMER. CONTINUE TO RIH TO 1166' MD AND SHALLOW HOLE TEST MWD. 05:00 - 10:00 5.00 CEMT N CEMT 11,450.0 INT1 RIH FROM 1166' MD TO 11450' MD - 165K PUW, 125K SOW 10:00 - 11:00 1.00 CEMT P INT1 SLIDE DRILL IN 6 -1/8" PRODUCTION PILOT HOLE FROM 11450' TO 11470' MD - 250 GPM, 1970 PSI ON, 1870 PSI OFF - 165K PUW, 125K SOW ADT = .3 HRS, AST = .3 HRS, JARS = 97.8 HRS 11:00 - 12:00 � 1.00 CEMT P INT1 FIT AT 11446' MD/ 8191' TVD TO 607 PSI SURFACE PRESSURE WITH 8.6 PPG MW IN HOLE _ (10 PPG EMW) 12:00 - 00:00 12.00 DRILL P PROD1 DRILL AHEAD IN 6 -1/8" PRODUCTION PILOT HOP F FROM 11470' TO 11805' MIl CONFIRM CASING PICK - 250 GPM, 1985 PSI ON, 1780 PSI OFF - 60 RPM, 5.5K TQ ON, 5K OFF - 15K WOB - 175K PUW, 122K SOW, 140K RTW ADT =6.85, AST =3.97, ART =2.88, JARS = 104.4, BIT =7.15 HRS SLOW PUMP RATES TAKEN +,� 5/8/2010 00:00 - 12:00 12.00 DRILL P PROD1 DRILL AHEAD IN 6 -1/8" PRODUCTION PILOT ?.lD HOLE FROM 11805' TO PILOT HOLE TD AT ' f 12270' MD. TARGET CAME IN 25' TVD LOWER gy THAN EXPECTED. - 250 GPM, 2020 PSI ON, 1815 PSI OFF - 60 RPM, 5.5K TQ ON, 5K OFF - 20K WOB - 180K PUW, 130K SOW, 143K RTW ADT =8.63, ART =3.95, AST =4.68, BIT = 15.48, JAR =113 HRS FALLING BEHIND ON BUILD RATES AT — 11700' MD. CONSULT WITH TOWN AND DECIDE TO CONTINUE TO DRILL AHEAD TO PILOT HOLE TD. SLOW PUMP RATES TAKEN @ 0200 12:00 - 15:00 I 3.00 DRILL P PROD1 MAD PASS FROM 12270' TO 12070' MD AT 180 FPH. BACK REAM FROM 12070' TO 11550' MD. - 250 GPM, 1750 PSI - 60 RPM, 5K TORQUE PUMP OUT OF HOLE FROM 11550' TO SHOE AT 11446' MD. 15:00 - 16:00 1.00 DRILL P PROD1 CIRCULATE 1/2 BU AT THE SHOE FORA TOTAL OF 2 BU TOTAL FOR THE TRIP OUT - 250 GPM, 1713 PSI 16:00 - 21:00 5.00 DRILL P PROD1 MONITOR WELL, STATIC. PUMP DRY JOB AND BLOW DOWN TOP DRIVE. POOH ON ELEVATORS FROM 11446' TO THE BHA AT 225' MD. Printed 6/11/2010 9:39:36AM North America - ALASKA - BP Page 33 of 36 Operation Summary Report Common Wet Name: 15- 27_DIMS AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 4/10/2010 End Date: 5/14/2010 X3- 00TWH -C (3,761,506.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:00AM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120 "0 Long: 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.0ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 21:00 - 23:00 2.00 DRILL ■ PROD1 LD BHA #9, REMOVE RA SOURCE AND LAY DOWN ADN AND IMPULSE TOOL. 23:00 - 00:00 1.00 DRILL PROD1 PU 8 JTS OF 4" DP TO 506' MD WHILE DOWNLINK WITH MWD 5/9/2010 00:00 - 01:00 1.00 DRILL PROD1 PU 13 JTS OF DP TO 997' MD. STAND BACK DRILL PIPE 01:00 - 01:30 0.50 DRILL PROD1 LD BIT AND MOTOR. HUGHES EP7258 BIT GRADED: 1- 2- BT- A- 0 -1 -RG -BHA 01:30 - 03:30 2.00 DRILL P PROD1 PJSM W/ MWD ON PICKING UP SOURCE. MU BHA #10: MSR513M -A1B HYCALOG BIT, 1.5 DEG BEND MOTOR, IMPULSE MWD, ADN4, BALL CATCHER AND CCV AND HYDRALIC JARS. 03:30 - 05:30 2.00 DRILL P PROD1 RIH WITH STANDS OF DRILL PIPE FROM 230' TO 888' MD. PU DRILL PIPE FROM 888' MD TO 1172' MD. SHALLOW HOLE TEST MWD AND CONTINUE TO PU DP TO 2672' MD. 05:30 - 07:30 2.00 DRILL P PROD1 RIH FROM 2672' TO 6245' MD FILLING PIPE EVERY 30 STANDS. - 100K PUW, 93K SOW 07:30 - 08:30 1.00 DRILL P PROD1 SERVICE AND CHANGE OUT OIL IN TOP DRIVE. SERVICE CROWN AND BLOCKS. 08:30 - 10:30 2.00 DRILL P PROD1 RIH FROM 6235' TO 11415' MD. FILL PIPE EVERY 30 STDS. - 163K PUW, 115K SOW 10:30 - 11:30 1.00 DRILL P PROD1 PJSM, SLIP AND CUT 57' OF DRILLING LINE. INSPECT DRAWWORKS AND ADJUST BRAKES 11:30 - 12:00 0.50 DRILL P PROD1 RIH TO 11900' MD - 170K PUW, 123K SOW 12:00 - 22:30 10.50 DRILL P PROD1 ' TRENCH FROM 11900' TO 11930' MD. TIME DRILL OPEN HOLE SIDETRACK AT 170 DEG LEFT OF 5 HIGH SIDE FROM 11930' TO 11960' MD. - 246 GPM, 1520 PSI SLOW PUMP RATES TAKEN @ 14:45 20:00 - 00:00 4.00 DRILL P PROD1 CONTINUE TO SIDETRACK FROM 11960' TO 11977' MD - 245 GPM, 1600 PSI - 170K PUW, 120K SOW - 8K WOB AST =8.33, ART =0, ADT =8.33, BIT =8.33, JARS =121 HRS 5/10/2010 00:00 - 12:00 12.00 DRILL P PROD1 DIRECTIONAL DRILL FROM 11977' TO 12261' MD. - 250 GPM, 1980 PSI ON, 1700 PSI OFF - 60 RPM, 7K TORQUE ON, 5.5K TORQUE OFF - 175K PUW, 130K SOW, 140K RTW - ADT =6.42, AST =5.51, ART =.91, BIT = 14.75, JARS =128 HRS SLOW PUMP RATES TAKEN Printed 6/11/2010 9:39:36AM North America - ALASKA - BP Page 34 of 36 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 4/10/2010 End Date: 5/14/2010 X3- 00TWH -C (3,761,506.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:00AM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120 "0 Long: 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.0ft (above Mean Sea Level) Date From - To Hrs j Task Code NPT NPT Depth Phase Description of Operations (hr) _ (ft) 12:00 - 00:00 12.00 DRILL P PROD1 DIRECTIONAL DRILL FROM 12261' TO 12576' MD. - 250 GPM, 1980 PSI ON, 1700 PSI OFF - 60 RPM, 7K TORQUE ON, 5K TORQUE OFF - 180K PUW, 120K SOW, 140K RTW - ADT =7.45, AST =4.05, ART =3.4, BIT= 22.20, JARS =135 HRS SLOW PUMP RATES TAKEN 5/11/2010 00:00 - 12:00 12.00 DRILL P PROD1 DIRECTIONAL DRILL 6 -1/8" PRODUCTION HOLE FROM 12576' TO 13064' MD. - 250 GPM, 2140 PSI ON, 1850 PSI OFF - 80 RPM, 7K TORQUE ON, 5.5K TORQUE OFF - 180K PUW, 123K SOW, 137K RTW - ADT =7.25, AST =4.04, ART =3.12, BIT= 29.45, JARS =142 HRS _ SLOW PUMP RATES TAKEN 12:00 - 00:00 12.00 DRILL P PROD1 DIRECTIONAL DRILL 6 -1/8" PRODUCTION HOLE FROM 13064' TO 13336' MD. - 250 GPM, 2150 PSI ON, 1880 PSI OFF - 80 RPM, 8K TORQUE ON, 6K TORQUE OFF - 180K PUW, 120K SOW, 137K RTW - ADT =5.1, AST =3.83, ART =1.27, BIT = 34.55, JARS =148 HRS SLOW PUMP RATES TAKEN 5/12/2010 00:00 - 12:00 12.00 DRILL P PROD1 DIRECTIONAL DRILL 6 -1/8" PRODUCTION HOLE FROM 13336' TO 13,640' MD. - 250 GPM, 2080 PSI ON, 1880 PSI OFF - 80 RPM, 8K TORQUE ON, 6.5K TORQUE OFF - 15kWOB - 177K PUW, 123K SOW, 137K RTW - ADT =6.49, AST =5.06, ART =1.43, BIT = 41.04, JARS =154 HRS SLOW PUMP RATES TAKEN 12:00 - 00:00 12.00 DRILL P PROD1 DIRECTIONAL DRILL 6 -1/8" PRODUCTION HOLE FROM 13640' TO 13,935' MD. - 250 GPM, 2170 PSI ON, 1930 PSI OFF - 80 RPM, 8K TORQUE ON, 6K TORQUE OFF - 16k WOB - 180K PUW, 120K SOW, 137K RTW - ADT =5.91, AST =4.57, ART =1.34, BIT = 46.95, JARS =160 HRS SLOW PUMP RATES TAKEN 5/13/2010 00:00 - 12:00 12.00 DRILL P PROD1 DIRECTIONAL DRILL 6 -1/8" PRODUCTION HOLE FROM 13935' TO 14,331' MD. - 250 GPM, 2340 PSI ON, 1930 PSI OFF - 80 RPM, 9K TORQUE ON, 6.5K TORQUE OFF - 16kWOB - 180K PUW, 120K SOW, 137K RTW - ADT =6.11, AST =2.42, ART =3.69, BIT = 53.06, JARS =166 HRS SLOW PUMP RATES TAKEN Printed 6/11/2010 9:39:36AM S North America - ALASKA - BP Page 35 of 36 e S Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 4/10/2010 End Date: 5/14/2010 X3- 00TWH -C (3,761,506.00 USD) Project: Prudhoe Bay f Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:00AM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120 "0 Long: 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.0ft (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 PROD1 DIRECTIONAL DRILL 6 -1/8" PRODUCTION HOLE FROM 14331' TO 14796' MD. - 250 GPM, 2195 PSI ON, 2025 PSI OFF - 80 RPM, 9K TORQUE ON, 7K TORQUE OFF - 18kWOB - 195K PUW, 115K SOW, 137K RTW - ADT =6.33, AST =2.14, ART =4.19, BIT = 59.30, JARS =172 HRS SLOW PUMP RATES TAKEN I^ 5/14/2010 00:00 - 00:30 0.50 DRILL P PROD1 DIRECTIONAL DRILL 6 -1/8" PRODUCTION HOLE / v FROM 14796' TO TD AT 14870' MD. - 250 GPM, 2285 PSI ON, 2030 PSI OFF V - 80 RPM, 9K TORQUE ON, 7K TORQUE OFF - 15kWOB - 195K PUW, 115K SOW, 140K RTW - ADT =.68, AST =0, ART =.68, BIT= 60.07, JARS =173 HRS SLOW PUMP RATES TAKEN 00:30 - 01:00 0.50 DRILL P PROD1 CIRCULATE OPEN HOLE VOLUME OF 70 BBLS - 250 GPM, 2030 PSI MONITOR WELL, STATIC _- 01:00 - 05:00 4.00 DRILL P PROD1 BACKREAM OUT OF THE HOLE FROM 14870' TO 11885' MD - 250 GPM, 1650 PSI - 100 RPM, 5K TORQUE - 195K PUW, 115K SOW, 130K RTW 05:00 - 05:30 0.50 DRILL P PROD1 ORIENT 160L AND PUMP IN HOLE FROM 11885' TO 12356' MD - 3 BPM, 790 PSI TAKE SURVERY TO ENSURE BHA IS IN SIDETRACKED HOLE 05:30 - 07:00 1.50 DRILL P PROD1 CONTINUE BACKREAMING OUT OF HOLE FROM 12356' TO 11446' MD - 250 GPM, 1650 PSI - 100 RPM, 5K TORQUE - 130K RTW 07:00 - 09:00 2.00 DRILL P PROD1 DROP CIRC SUB BALL AND PUMP DOWN AT 2 BPM AND 600 PSI. PUMP 40 BBLS OVER DP CAPACITY AND DID NOT SEE CCV OPEN. DROP SECOND BALL, WHEN PUMP CAME BACK ON, 1ST BALL SEATED AND OPEN CCV AT 1900 PSI. PUMP DOWN SECOND BALL AND CLOSE CCV AT 1900 PSI. DROP THIRD BALL AND REOPEN AT 2100 PSI. 09:00 - 09:30 0.50 DRILL P PROD1 CBU WHILE RECIPRICATING AND ROTATING PIPE FROM 11446' TO 11246' MD. - 500 GPM, 1916 PSI - 120 RPM, 4K TORQUE 130K RTW Printed 6/11/2010 9:39:36AM North America - ALASKA - BP Page 36 of 36 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 4/10/2010 End Date: 5/14/2010 X3- 00TWH -C (3,761,506.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:00AM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120 "0 Long: 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.0ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 09:30 - 14:30 5.00 DRILL P PROD1 I MONITOR WELL, STATIC. PUMP DRY JOB AND POOH FROM 11246' TO 230' MD. - 100K PUW, 90K SOW MONITOR WELL, STATIC. RECOVER 2.25" DRIFT. DROP CCV BALL AND PUMP 2 BPM TO CLOSE CCV AT 1500 PSI 14:30 - 16:00 1.50 DRILL P PROD1 LD BHA #10, MSR513M -A1B HYCALOG BIT, 1.5 DEG MOTOR, IMPULSE, ADN AND CCV TOOL. RECOVER RA SOURCE. CLEAN AND CLEAR RIG FLOOR. FUNCTION RAMS BIT GRADED: 3- 3- WT- S- X- I -BT -TD Printed 6/11/2010 9:39:36AM S North America - ALASKA - BP Page 1 of 6 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: COM- ONSHORE (CON) Start Date: 5/15/2010 End Date: 5/19/2010 X3- 00TWH -C (1,810,141.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:00AM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120 "0 Long: 1 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.0ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) 1 (ft) 5/14/2010 16:00 - 17:30 1.50 j CASING P RUNPRD PJSM, RU LINER HANDLING EQUIPMENT. 17:30 - 20:00 2.50 CASING P RUNPRD PJSM, MU SHOE TRACK AND CHECK FLOATS, FLOATS GOOD. RIH WITH 4.5" 12.6# L -80 IBT -M LINER TO 1315' MD. FILL PIPE ON THE FLY EVERY 10 JTS. - 37K PUW, 37K SOW MU TORQUE = 2600FT /LBS 20:00 - 21:00 1.00 CASING N RREP 1,315.0 RUNPRD REPLACE LINK TILT CYLINDER 21:00 - 23:30 2.50 CASING P RUNPRD CONTINUE TO RIH WITH 4.5" LINER FROM 1315' TO 3561' MD. - 65K PUW, 63K SOW 23:30 - 00:00 0.50 CASING P RUNPRD PJSM, BEGIN MAKING UP BAKER 5" X 7" FLEX LOCK LINER HANGER AND ZXP LINER TOP PACKER. 5/15/2010 00:00 - 00:30 0.50 CASING P RUNPRD MIX AND POUR PALL MIX INTO TOP OF LINER TOP EXTENSION. WAIT FOR IT TO SET UP. RD LINER RUNNING EQUIPMENT. 00:30 - 01:00 0.50 CASING P RUNPRD MU XO RIH WITH FIRST STAND OF DP AND LD SINGLE JOINT. CIRCULATE 1.5X LINER VOLUME - 4 BPM, 150 PSI 01:00 - 05:30 4.50 CASING P F RUNPRD 1 RIH FROM 3658' TO 11366' MD. FILLING PIPE ;AND BREAKING CIRCULATION EVERY 20 ;STANDS 05:30 06:30 1.00 CASING P RUNPRD CIRCULATE 1.5X DP AND LINER VOLUME AT SHOE. STAGE PUMPS UP - 1 BPM, 405 PSI - 2 BPM, 495 PSI - 3 BPM, 580 PSI - 4 BPM, 680 PSI - 5 BPM, 800 PSI - 6 BPM, 930 PSI - 148K PUW, 117K SOW 06:30 - 09:30 3.00 CEMT P RUNPRD CONTINUE TO RIH FROM 11336' TO 14844' MD. HAVE TO WORK PIPE DOWN FROM 14562' MD. MU CEMENT HEAD AND SINGLE JT. WASH DOWN FROM 14844' TO 14870' MD AND TAG UP ON BOTTOM . - 180K PUW, 117K SOW 09:30 - 11:00 1.50 CEMT P RUNPRD PJSM, WITH CEMENTERS. CIRCULATE AND CONDITION HOLE FOR CEMENT JOB. - 1 BPM, 680 PSI - 2 BPM, 790 PSI - 3 BPM, 942 PSI - 4 BPM, 1430 PSI START PACKING OFF OVER 4 BPM, KEEP PUMP RATES BELOW 4 BPM START BATCH MIXING CEMENT AT 10:15 Printed 6/11/2010 9:41:36AM North America - ALASKA - BP Page 2 of 6 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: COM- ONSHORE (CON) Start Date: 5/15/2010 End Date: 5/19/2010 X3- O0TWH -C (1,810,141.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:00AM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120 "0 Long: 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.Oft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 11:00 - 13:00 2.00 CEMT P RUNPRD BEGIN PUMPING 25 BBLS 11.5 PPG MUDPUSH AT 3 BPM SHUT DOWN AND PRESSURE TEST LINES TO 4500 PSI OPEN UP TIW VALVE AND PUMP 91 BBLS (256 SACKS) OF 15.8 PPG CLASS G CEMENT W /GASBLOK, 1.17 CUFT /SK YIELD DROP DP WIPER DART AND DISPLACE WITH RIG PUMPS AT 5 BPM AND 111 PSI. FOLLOW WITH 85 BBLS PERF PILL - 3.7 BPM, 144 PSI, 50 BBL DISPLACMENT - 3.7 BPM, 815 PSI, 61 BBLS DISPLACMENT, MUD PUSH AT SHOE STOP RECIPRICATING PIPE DUE TO PACKING OFF AND UNABLE TO MOVE PIPE BACK TO BOTTOM - 3.4 BPM, 1256 PSI, 86 BBLS DISPLACMENT, CEMENT AT SHOE - 2.7 BPM, 1367 PSI, 101 BBLS DISPLACMENT START TO SEE PACK -OFF, SLOW PUMP RATES - 1.7 BPM, 1260 PSI, 110 BBLS DISPLACMENT - 2.0 BPM, 1776 PSI, 130 BBLS DISPLACMENT - 2.0 BPM, 1882 PSI, 166 BBLS DISPLACMENT WIPER PLUG SEATED AT 173 BBLS DISPLACED AND 3311 PSI AND HOLD FOR 5 MIN BLEED PRESS RE • FF 'OD D • 6. • FLOATS HOLDING TOL = 11271' MD I BOTTOM OF SHOE = 14862' MD CIP @12:54 13:00 - 13:30 0.50 CEMT P RUNPRD PRESSURE UP TO 4200 PSI AND RELEASE RUNNING TOOL. BLEED PRESSURE TO 1000 PSI AND PU AND RELEASE RUNNING TOOL. SLACK , OFF 75K TO SET PACKER AND REPEAT 2 MORE TIMES WITH ROTATION. PU TO 11272' MD. 13:30 - 14:30 1.00 CEMT P RUNPRD IR LATE OUT CEMENT. —20 BBLS OF CEMENT TO SURFACE - 450 GPM, 2160 PSI MONITOR WELL FOR 15 MIN, STATIC 14:30 - 15:30 1.00 CEMT P RUNPRD PRESSURE CASING TO 1000 PSI FOR 5 MIN. 1 GOOD TEST RD, CEMENT HEAD. 15:30 - 16:30 1.00 CASING P RUNPRD DISPLACE WELL TO 8.5 PPG SEAWATER - 500GPM, 2300 PSI MONITOR WELL, STATIC 16:30 - 19:00 2.50 CASING P RUNPRD POOH FROM 11265' TO 3633' MD 19:00 - 21:30 2.50 CASING P RUNPRD LD DP FROM 3633' TO SURFACE. LD RUNNING TOOL. DOG SUB SHEARED 21:30 - 23:00 1.50 PERFOB P OTHCMP PJSM WITH PERFORATING HANDS. LOAD SHED WITH GUNS. RU FOX PIPE AND GUN HANDLING TOOLS. 23:00 - 00:00 1.00 i PERFOB P OTHCMP PJSM, PU 2 -7/8" 6 SPF 2909PJ PERF GUNS TO 436' MD. Printed 6/11/2010 9:41:36AM • North America - ALASKA - BP Page 3 of 6 Operation Summary Report Common Wet Name: 15- 27_DIMS AFE No Event Type: COM- ONSHORE (CON) Start Date: 5/15/2010 End Date: 5/19/2010 X3- 00TWH -C (1,810,141.00 USD) _ _ I Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:00AM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120 "0 Long: 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.0ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 5/16/2010 00:00 - 00:30 0.50 PERFOB P OTHCMP I CONTINUE TO RIH WITH 2 -7/8 "PERF GUNS FROM 436' TO 1135' MD. PICK UP FIRST E -FIRE HEAD. 00:30 - 01:30 1.00 PERFOB P OTHCMP RU TO RIH 2 -7/8" FOX PIPE 01:30 - 02:30 1.00 PERFOB P OTHCMP RIH WITH 22 JTS OF FOX PIPE FROM 770' TO 1815' MD. 02:30 - 03:30 1.00 PERFOB P OTHCMP PU 2 -7/8" PERF GUNS FROM 1815' TO 2278' MD. 03:30 - 04:00 0.50 PERFOB P 1 OTHCMP RIH WITH 2 -7/8" FOX PIPE FROM 2278' TO 2316' — MD 04:00 - 04:30 0.50 PERFOB P OTHCMP CONDUCT RIG EVACUATION DRILL AND MUSTER AT TRUCK SHOP 04:30 - 05:30 1.00 PERFOB P OTHCMP CONTINUE TO RIH WITH 2 -7/8" FOX PIPE FROM 2316' TO 3614' MD 05:30 - 09:30 4.00 PERFOB P OTHCMP RIH WITH WITH GUNS ON DP FROM 3614' TO 14772' MD. TAG UP ON PLUG AND PU AND SPACE OUT GUNS - 162K PUW, 122K SOW OTHCMP 09:30 10:30 1.00 PERFOB P RU AND PRESSURE TEST LINER TO 350 0 PSI FOR 30 MIN. LOST 20 PSI IN THE FIRST 15 MIN AND 0 PSI IN THE SECOND 15 MIN. RD 10:30 - 11:30 1.00 PERFOB P OTHCMP PJSM, WAIT 15 MIN TO RESET FIRING HEAD FROM PRESSURE TEST. DO DUMMY FIRING RUN. FIRE GUNS AND PERFORATE THE FOLLOWING INTERVALS: C 12500' - 12900' MD 13620' - 14180' MD 1 14360' - 14720' MD 11:30 - 13:00 1.50 PERFOB P OTHCMP POOH FROM 14720' TO 12451' MD ABOVE TOP SHOT. MONITOR WELL FOR 30 MIN. 2 BPM STATIC LOSS RATE 13:00 - 14:00 1.00 PERFOB P OTHCMP CIRCULATE SURFACE TO SURFACE VOLUME - 310 GPM, 1520 PSI MONITOR WELL, 2 BPH LOSS RATE 14:00 - 19:00 5.00 PERFOB P OTHCMP PJSM, POOH AND LD DRILL PIPE FROM 12451' TO 6000' MD 19:00 - 20:00 1.00 PERFOB N RREP OTHCMP BAD HOSE AND FITTING ON IRON ROUGH NECK, CHANGE OUT HOSE 20:00 - 20:30 0.50 PERFOB P OTHCMP SERVICE TOP DRIVE 20:30 - 21:30 1.00 PERFOB P OTHCMP CONTINUE TO LD DRILL PIPE FROM 6000' TO 3708' MD 21:30 - 22:30 1.00 PERFOB P OTHCMP RIH WITH DP FROM 3708' TO 6058' MD 22:30 - 00:00 1.50 PERFOB P OTHCMP POOH AND LD DRILL PIPE FROM 6058' TO 3614' MD TOTAL OF 38 BBLS OF SEAWATER LOST TO THE WELLBORE FOR DAY 5/17/2010 00:00 - 00:30 0.50 PERFOB P OTHCMP RU TO LD 2 -7/8" FOX PIPE 00:30 - 02:00 1.50 PERFOB P OTHCMP LD FOX PIPE FROM 3614' TO 2278' MD. Printed 6/11/2010 9:41:36AM North America - ALASKA - BP Page 4 of 6 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: COM- ONSHORE (CON) Start Date: 5/15/2010 End Date: 5/19/2010 X3- 00TWH -C (1,810,141.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:00AM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120"0 Long: 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.0ft (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 PERFOB P OTHCMP PJSM, LD PERF GUNS FROM 2278' TO 1815', 2 -7/8" FOX PIPE FROM 1815' TO 1135' MD AND THE REST OF THE PERF GUNS FROM 1135' TO SURFACE 05:30 - 06:30 1.00 PERFOB P OTHCMP RD PERF GUN HANDLING EQUIPMENT. CLEAN AND CLEAR RIG FLOOR. 06:30 - 07:00 0.50 RUNCOM P RUNCMP PULL WEAR RING 07:00 - 09:30 2.50 RUNCOM P RUNCMP PJSM WITH NABORS CASING AND HALLIBURTON COMPLETIONS HANDS. RU COMPENSTATOR, TORQUE TURN EQUIPMENT, STABBING BOARD AND ELEVATORS TO RIH WITH 4.5" COMPLETION 09:30 - 23:30 14.00 RUNCOM P RUNCMP RIH WITH 4.5" 12.6# 13CR85 VAMTOP TUBING TO 11283' MD. TORQUE TURN TO 4440 FT -LBS - 127K PUW, 100K SOW 23:30 - 00:00 0.50 RUNCOM P RUNCMP TAG UP INSIDE OF PBR. SPACE OUT COMPLETION WITH TWO 19.86' PUPS. WLEG 5' OFF OF BOTTOM OF PBR. 5/18/2010 00:00 - 01:30 1.50 RUNCOM P RUNCMP IOU HANC;ERANI11 ANf)JNC; .IT AND LAND TUBING IN SPOOL. RUN IN LOCK DOWN SCREWS AND LD LANDING JT. 01:30 - 04:30 3.00 RUNCOM P RUNCMP REVERSE CIRCULATE 169 BBLS OF CLEAN SEAWATER FOLLOWED BY 141 BBLS OF INHIBITED SEAWATER FOLLOWED BY 190 BBLS OF CLEAN SEAWATER. - 3 BPM, 200 PSI. 04:30 - 05:30 1.00 RUNCOM P RUNCMP DROP BALL AND ROD. ATTEMPT TO PRESSURE UP AND SET PACKER TWICE; UNABLE TO PRESSURE UP. SUSPECT BALL AND ROD NOT SEATING. ATTEMPT TO PUMP DOWN AT 3 BPM AND 300 PSI. CALL AND WAIT ON SLICKLINE TO CHASE BALL AND ROD TO BOTTOM. 05:30 - 08:00 2.50 RUNCOM N DFAL RUNCMP WAIT ON SLICKLINE UNIT. - WHILE WAITING, REVERSE IN 15 BBLS AND LINE BACK UP TO TRY TO SEAT BALL; NO GO. 08:00 - 10:30 2.50 RUNCOM N DFAL RUNCMP SPOT AND RU SLICKLINE UNIT. - HOLD PJSM WITH ALL HANDS. 10:30 - 12:30 2.00 RUNCOM N DFAL RUNCMP MU BELL GUIDE TO SLICKLINE TOOLS. - RIH TO 11,265'. 12:30 - 13:00 0.50 RUNCOM N DFAL RUNCMP POH WITH SLICKLINE. Printed 6/11/2010 9:41:36AM S North America - ALASKA - BP Page 5 of 6 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: COM- ONSHORE (CON) Start Date: 5/15/2010 End Date: 5/19/2010 X3- 00TWH -C (1,810,141.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:00AM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120 "0 Long: 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.0ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 13:00 - 17:00 4.00 RUNCOM P RUNCMP SET PACKER AND PRESSURE TEST TUBING AND IA. - POSITIVE INDICATION OF PACKER SETTING ON SURFACE. - PRESSURE TEST TUBING TO 3,500 PSI FOR 30 ��� MINUTES. 9 - 350 PSI BLED OFF IN 15 MINUTES; 250 PSI 4 BLEDAFTER 12 MORE MINUTES FORA TOTAL L OF 600 PSI LOSS FOR 27 MINUTES, TEST FAILED 1- BLED OFF AND RETESTED. 1 - 250 PSI BLED OFF IN 15 MINUTES; 50 PSI FOR THE LAST 15 MINUTES FOR A TOTAL OF 300 PSI BLED OFF FOR 30 MINUTES. - BLED TUBING TO 1,500 PSI. 1- PRESSURE TEST IA TO 3,500 PSI FOR 30 � !MINUTES; GOOD TEST. s k 1- BLED TO ZERO PSI. / ft - RETEST TUBING TO 3,500 PSI FOR 30 MINUTES. - 70 PSI BLED OFF AFTER 15 MINUTES; AFTER LAST 15 MINUTES FORA TOTAL OF 100 PSI BLED OFF FOR 30 MINUTES; GOOD TEST. - PUMP DOWN IA AND SHEAR DCK VALVE AT 2,050 PSI. - PUMP DOWN IA AT 37 SPM, 400 PSI AND TUBING AT 31 SPM, 320 PSI. 17:00 - 18:30 1.50 BOPSUR P RUNCMP i RU DSM LUBRICATOR AND SET TWC. - HOLD PJSM WITH ALL HANDS. - TEST LUBRICATOR TO 1,000 PSI; TEST GOOD. - PRESSURE TEST TWC TO 1,000 PSI FROM BELOW FOR 10 MINUTES; TEST GOOD. - PRESSURE TEST TWC: TO 3 500 Psi FRnnn ABOVE; BLINDS LEAKING. - PRESSURE TEST TWC TO 1,000 PSI FROM ABOVE FOR 10 MINUTES; TEST GOOD. 18:30 - 20:30 2.00 BOPSUR P RUNCMP ND BOP AND RACK BACK. 20:30 - 23:00 2.50 WHSUR P RUNCMP NU ADAPTER FLANGE AND TREE. - HOLD PJSM WITH ALL HANDS. - TEST FLANGE TO 5,000 PSI FOR 30 MINUTES; TEST GOOD. - TEST TREE TO 5,000 PSI; TEST GOOD, NO LEAKS. 23:00 - 00:00 1.00 WHSUR P RUNCMP RU DSM LUBRICATOR AND PULL TWC. - HOLD PJSM WITH ALL HANDS. • - TEST LUBRICATOR TO 1,000 PSI; TEST GOOD. - PULL TWC. 5/19/2010 00:00 - 02:30 2.50 WHSUR P RUNCMP FREEZE PROTECT TUBING AND IA TO 2,200'. - HOLD PJSM WITH ALL HANDS AND RU LRS. - PUMP 152 BBLS. - 2 BPM, 550 PSI. 02:30 - 03:30 1.00 WHSUR P RUNCMP ALLOW IA AND TUBING TO U -TUBE. Printed 6/11/2010 9:41:36AM • • North America - ALASKA - BP Page 6 of 6 Operation Summary Report Common Well Name: 15- 27_DIMS AFE No Event Type: COM- ONSHORE (CON) Start Date: 5/15/2010 End Date: 5/19/2010 X3- 00TWH -C (1,810,141.00 USD) Project: Prudhoe Bay Site: PB DS 15 Rig Name /No.: NABORS 7ES Spud Date/Time: 1/20/1991 12:00:00AM Rig Release: 5/19/2010 Rig Contractor: NABORS ALASKA DRILLING INC. UWI: / Lat: 070 °17'58.120 "0 Long: 0148 °34'29.198 "W Active Datum: ORIG KELLY BUSHING @67.0ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 03:30 - 04:30 1.00 WHSUR P RUNCMP RU DSM LUBRICATOR AND SET BPV. - HOLD PJSM WITH ALL HANDS. - TEST LUBRICATOR TO 1,000 PSI; TEST GOOD. - TEST BPV FROM BELOW TO 1,000 PSI; TEST GOOD. 04:30 - 06:00 1.50 WHSUR P RUNCMP RD CELLAR AND SECURE WELL. * ** RIG RELEASE AT 0600 HRS FROM DS 15 -27A. * ** i Printed 6/11/2010 9:41:36AM • by 0 Schlumberger 15 -27A Survey Report (Def Survey) Report Date: May 14, 2010 - 02.41 PM Survey / DLS Computation: Minimum Curvature / Lubinski Client: BP Exploration Alaska Vertical Section Azimuth: 349.050 ° (True North) Field: Prudhoe Bay Unit - BOA Vertical Section Origin: 0.000 B, 0.000 ft Structure / Slot: DS -15 / 15 -27 TVD Reference Datum: Rotary Table Well: 15 -27 TVD Reference Elevation: 60.350 ft above MSL Borehole: 15 -27A Seabed / Ground Elevation: 28.150 ft above MSL UWI / API #: Borehole - 2618208 / Unknown Magnetic Declination: 27.833 ° Survey Name: 15 -27A Total Field Strength: 57433.669 nT Survey Date: 14- May -10 Magnetic Dip Angle: 80.781 ° Tort / AHD / DDI / ERD Ratio: 398.503 ° / 9040.584 ft / 6.788 / 1.035 Declination Date: January 05, 1998 Grid Coordinate System: NAD27 Alaska State Plane, Zone 04, US Feet Magnetic Declination Model: BGGM 2009 Location Lat I Long: N 70° 17' 58.12284 ", W 148° 34' 29.22183" North Reference: True North Location Grid WE Y /X: N 5961157.180 BUS, E 675967.790 ftUS Grid Correction: 0.000 ° Grid Convergence Angle: 1.34182618 ° Total Corr Mag North - >True North: 27.833 ° Grid Scale Factor: 0.99993518 Local Coord Referenced To: Well Head is Comments MD Inc! Azim True TVDSS ND VSEC AHD Closure NS EW DLS Northing Easting Latitude Longitude (ft) ( °) ( °) (ft) (ft) (ft) (ft) (ft) (ft) (ft) ( °/100ft) (ftUS) (ftUS) (1 (1 RTE 0.00 0.00 0.00 -60.35 0.00 0.00 0 00 0.00 0.00 0.00 0 00 5961157.18 675967.79 70.29947857 - 148.57478384 WRP 28.15 0.00 0.00 -32.20 28.15 0.00 0.00 0.00 0.00 0.00 0.00 5961157.18 675967 79 70 29947857 - 148.57478384 431 35 0.90 186.30 370.98 431 33 -3.02 3.17 3.17 -3.15 -0.35 0 22 5961154.03 675967.52 70.29946997 - 148.57478666 930.35 0.80 135.50 869.94 930 29 -9.67 10.10 9.67 -9.53 1 66 0 15 5961147.69 675969.68 70.29945254 - 148.57477037 1430.35 0.87 84.33 1369 89 1430.24 -12 93 16.91 14.06 -11.64 7 89 0.14 5961145.73 675975.95 70.29944676 -148 57471997 1939.35 1.58 58.30 1878.77 1939.12 -10.80 27.62 19.26 -7.57 17.70 0.17 5961150.02 675985.67 70.29945788 - 148.57464048 2434.35 1.28 112.80 2373.64 2433.99 -1145 39.08 29.26 -6.13 28.61 0.27 5961151.72 675996.53 70.29946182 - 148.57455218 2942.35 110 119.00 288153 2941.88 -17.74 49.62 39.57 -10.69 3810 0.04 5961147.38 676006.13 70.29944935 - 148.57447529 Tie -In Survey 3440.35 0.85 180.50 3379 47 3439.82 -24.43 57.32 45.43 -16.70 42.25 0.20 5961141.47 676010.42 70.29943293 - 148.57444170 3705.00 0.81 145.57 3644.09 3704.44 -28.06 61.04 47.78 -20.21 43.29 0.19 5961137.99 676011.54 70.29942335 - 148.57443327 3800.00 0.78 156.02 3739.08 3799.43 -29.31 62.35 48 85 -21.35 43.93 0.16 5961136 86 676012.21 70.29942023 - 148.57442807 TOW 3810.00 1.67 175.52 3749.08 3809.43 -29.52 62.57 48 98 -21.56 43.97 9.70 5961136.66 676012.25 70.29941966 - 148.57442775 BOW 3827 00 1.81 184.77 3766.07 3826.42 -30.03 63.08 49.20 -22 08 43.97 1.84 5961136.14 676012.26 70.29941826 - 148.57442778 3831.00 2.14 187.03 3770.07 3830.42 -30.16 63.22 49.25 -22.21 43.96 8.48 5961136.00 676012.25 70.29941788 - 148.57442789 3894 00 0.27 48.65 3833.06 3893.41 -31.20 64.33 49.71 -23 28 43.92 3.73 5961134.93 676012.24 70.29941496 - 148.57442816 3925.00 0.88 214.61 3864.06 3924 41 -31 33 64.53 49.71 -23.43 43.84 3.69 5961134.78 676012 17 70.29941456 - 148.57442881 3958.00 166 210.54 3897.05 3957.40 -31.87 65.26 49.67 -24.05 43.46 2.38 5961134.16 676011.79 70.29941286 - 148.57443194 3988.00 2.43 170.80 3927 03 3987.38 -32 83 66.29 50.06 -25.05 43.34 5.22 5961133.15 676011.70 70.29941012 - 148.57443291 4019.00 2.37 112.44 3958.01 4018.36 -33 84 67.48 51.11 - 25.95 44.03 7.55 5961132.27 676012 42 70.29940768 -148 57442726 i 4052.00 1.50 74.39 3990.99 4051.34 -34.18 68.56 52 09 -26.09 45.08 4.56 5961132.15 676013.47 70.29940729 - 148.57441878 4082.00 2.26 5.57 4020.98 4081.33 -33.58 69.43 52.12 -25.40 45.52 7.38 5961132.86 678013.89 70.29940919 - 148.5744152 4120 00 5.11 355.03 4058.90 4119.25 -31.18 71.87 50.92 -22 96 45.44 7.68 5961135 29 676013.76 70.29941583 - 148.5744158 4213.00 8.69 25.39 4151.23 4211.58 -21.39 82.80 49.69 -12 48 48.10 5.37 5961145.83 676016.16 70.29944446 - 148.57439435 4307.01 14.04 21.27 4243.37 4303.72 -6.01 101.31 55.47 4 57 55.29 5.75 5961163.04 676022.95 70.29949105 - 148.57433615 4332.13 15.71 16.14 4267.65 4328.00 -0.41 107.76 58.32 10.68 57.34 8.46 5961169.20 676024.86 70.29950774 - 148.57431954 4425.63 23.88 11.71 4355.55 4415.90 28.38 139.38 76.83 41.42 64.71 8 88 5961200.10 676031.51 70.29959173 - 148.57425983 4518.94 28.92 9.22 4439.11 4499.46 67.01 180.85 109.39 82.21 72.16 5.53 5961241.06 676038.00 70.29970317 - 148.57419947 461172 33.63 5.71 4518.39 4578.74 112.71 228.99 151.73 129.95 78.32 5.44 5961288.92 676043.04 70.29983359 - 148.57414963 4706.48 35.63 9.84 4596.37 4656.72 163.67 282.82 202.30 183.27 85.65 3.25 5961342.40 676049.12 70.29997925 - 148.57409027 4801.20 38.20 8.85 4672.09 4732.44 217.03 339.71 257.52 239.41 94.87 2.78 5961398.72 676057.02 70.30013260 - 148.57401558 4895.19 40.41 8.93 4744.82 4805.17 273 03 399.24 315.86 298.22 104.07 2.35 5961457.74 676064.84 70.30029329 - 148.57394106 4989.47 45.44 6.66 4813.84 4874.19 333 82 463.43 378.97 361.82 112.72 5.58 5961521.51 676072.00 70.30046702 - 148.57387104 j 5083 77 49.03 6.98 4877.85 4938.20 399 73 532.64 447.21 430.55 120.94 3.82 5961590.41 676078.61 70.30065478 - 148.57380443 5177 72 53.97 6.64 4936.32 4996.67 469.74 606.15 519.95 503.53 129 65 5.27 5961663.58 676085.60 70.30085417 - 148.57373389 5272.11 58.18 7.17 4988.99 5049.34 544.27 684.45 597 67 581.27 139.07 4.48 5961741.50 676093.20 70.30106654 - 148.57365757 5366.05 62.61 5.32 5035.39 5095 74 622.28 766.11 678.75 662.44 147.93 5.02 5961822.85 676100.15 70.30128828 - 148.57358586 5459.43 65.64 4.13 5076.14 5136.49 703.16 850.11 762.05 74616 154.83 3.44 5961906.71 676105.10 70.30151701 - 148.57352990 5553.83 68.50 2.88 5112.91 5173.26 787.34 937.05 848.18 832.92 160.14 3 27 5961993.57 676108.37 70.30175405 - 148.57348692 5647 48 67.26 1.70 5148.18 5208.53 871.79 1023.80 934.05 919.61 163.61 1.77 5962080.31 676109.81 70 30199086 - 148.57345880 Dolling Office 2009 1 716 0 Prudhoe Bay Una - EOAIDS.15 \15- 27115 - 27A \15 -27A 6/11120101005 AM Page 1 of 5 Comments MD Inel Azim True TVDSS ND VSEC AHD Closure NS EW DLS Northing Easting Latitude Longitude (ft) ( ( °) (ft) (ft) (ft) (ft) (ft) (ft) (ft) ( °NOOft) (ftUS) (ftUS) ( °) (1 5741.62 66.52 1.52 5185.13 5245.48 956.30 1110.39 1019.77 1006.16 166.04 0.81 5962166.88 676110.22 70.30222731 - 148.57343908 5836.48 65.88 1.03 5223.41 5283.76 1041.12 1197.18 1105.76 1092.93 167 97 0.82 5962253.67 676110 12 70.30246436 - 148.57342342 5928.88 65.28 358.54 5261.61 532196 1123.78 1281.31 1188.94 1177.05 167.66 2.54 5962337.76 676107.83 70.30269418 - 148.57342592 6023.05 66.01 357.44 5300.45 5360.80 1208.52 1367.10 1273.48 1262.79 164 65 1.32 5962423.39 676102.82 70 30292840 - 148.57345029 6116.98 65.01 359 90 5339.39 5399.74 1292.79 1452.57 1358 01 1348.23 162.66 2.61 5962508.76 676098.83 70.30316183 - 148.57346640 6211.08 65.46 359 27 5378.81 5439.16 1376.80 1538.02 1442 81 1433.68 162.04 0.77 5962594.16 676096.21 70.30339526 - 148.57347141 6305.65 63.52 0.77 5419.54 5479.89 1460.58 1623.36 1527.64 1519.02 162.06 2.50 5962679.48 676094.23 70.30362841 - 148.57347123 6398.89 62.40 0.78 5461.92 5522.27 1541.89 1706.41 1610 35 1602.06 163.18 1.20 5962762.51 676093.41 70.30385526 - 148.57346211 6493.56 62.89 3.02 5505.43 5565.78 1623.86 1790.49 1694.24 1686.09 165 98 2.16 5962846.58 676094.23 70.30408483 - 148.57343949 6587.39 62.73 5.49 5548.31 5608.66 1704.39 1873.95 1777.67 1769 31 172.17 2.35 5962929.92 676098.47 70.30431218 -148 57338933 6681.24 63.70 4.36 5590 60 5650.95 1784.98 1957.73 1861.44 1852 78 179.36 1.49 5963013.53 676103.70 70.30454021 - 148.57333109 6775.21 63.41 5.44 5632.45 5692.80 1865.91 2041.87 1945 57 1936.61 186.54 1.07 5963097.50 676108.92 70.30476922 - 148.57327287 6869.53 64.05 5.19 5674 20 5734.55 1947.11 2126.44 2030.15 2020 82 194.38 0.72 5963181.86 676114.78 70.30499929 - 148.57320940 6964.41 62.86 6.45 5716 60 5776.95 2028.37 2211.32 2115.02 2105 26 202.98 1.73 5963266 47 676121.40 70.30522996 - 148.57313970 7058.03 63.41 6.02 5758.91 5819.26 2108.16 2294.84 2198.53 2188 28 212.05 0.72 5963349 68 676128.52 70.30545677 - 148.57306622 7152.03 64.95 5.91 5799.85 5860.20 2189.11 2379.45 2283.14 2272.44 220.84 1.64 5963434.01 676135.34 70.30568667 - 148.57299498 7246.21 64 29 6.34 5840.21 5900.56 2270.45 2464.54 2368.23 2357.04 229.92 0.81 5963518.80 676142.44 70.30591780 - 148.57292142 7339.83 64.22 6.19 5880.88 5941.23 2351.00 2548.87 2452.55 2440.86 239.12 016 5963602.81 676149.67 70.30614680 - 148.5728468 7434.46 64.95 5.45 5921.49 598184 2432.84 2634.34 2538.02 2525.89 247.78 1.05 5963688.01 676156.34 70.30637910 - 148.5727766 7528.69 65.59 4 62 5960.91 6021.26 2515.12 2719.92 2623.60 2611.15 255.29 1 05 5963773.42 676161.86 70.30661201 - 148.57271578 7622.63 66.15 5.28 5999.32 6059.67 2597.57 2805 66 2709.33 2696.56 262.69 0 88 5963858.97 676167.25 70.30684535 - 148.57265582 7716.33 64.12 4.94 6038.71 6099.06 2679.26 2890 66 2794.33 2781.23 270.27 2.19 5963943.79 676172.84 70.30707666 -148 57259445 7810.04 63.41 5 41 6080.14 6140.49 2760.01 2974.72 2878.39 2864.95 277.85 0 88 5964027.65 676178.46 70.30730536 - 148.57253301 7904 29 64.36 4.62 6121.63 6181 98 2841.37 3059 35 2963.01 2949.25 285 24 1.26 5964112.10 676183.88 70.30753567 - 148.57247307 7998.24 65.07 4.43 6161.75 6222.10 2923.24 3144.30 3047.95 3033.93 291 94 0.78 5964196.91 676188 59 70.30776701 - 148.57241876 8092.62 66.02 3.54 6200.83 6261.18 3006.25 3230.21 3133.83 3119.63 297 91 1.32 5964282.73 676192 55 70 30800115 - 148.57237038 8185.97 64.87 3.89 6239.62 6299.97 3088 39 3315.11 3218.70 3204.36 303.41 1.28 5964367 55 676196.07 70.30823262 - 148.57232580 8279.30 62.95 4.11 6280.66 6341.01 3169 37 3398.93 3302.49 3287.97 309.26 2.07 5964451.27 676199.95 70.30846104 - 148.57227841 8373.92 63.50 4.09 6323.29 6383.64 3250 94 3483.41 3386.94 3372.23 315.30 0.58 5964535.65 676204.02 70.30869122 - 148.57222945 8467.93 63.93 3.57 6364.92 6425.27 3332.44 3567.69 3471.20 3456.33 320.93 0.67 5964619.85 676207.68 70.30892098 - 148.57218382 8561.83 64.67 3.37 6405.64 6465.99 3414.39 3652.31 3555.77 3540.79 326.05 0.81 5964704.40 676210.82 70.30915171 - 148.57214230 8655.73 62.91 5.76 6447.11 6507.46 3495.56 3736.54 3640.00 3624.76 332.74 2.95 5964788.49 678215.54 70.30938110 - 148.57208806 8749.74 62.05 4.62 6490.55 6550.90 3575.64 3819.92 3723.37 3707.78 340.28 1.41 5964871.67 676221.14 70.30960792 - 148.57202690 8844.09 63.78 5.32 6533.51 6593 86 3656.42 3903 92 3807.36 3791.47 347.56 1.95 5964955.49 676226.46 70.30983653 - 148.57196788 8938 08 66.75 5.04 6572.83 6633 18 3738.41 3989 27 3892.72 3876.48 355.27 3.17 5965040.65 676232.17 70.31006877 - 148.57190543 9032 88 66.82 4.88 6610.20 6670 55 3822.20 4076 40 3979.84 3963.27 362.80 0.17 5965127.60 676237 67 70.31030589 - 148.57184437 9126.64 66.16 6.25 6647.60 6707.95 3904.63 4162.37 4065.82 4048.84 37114 1.51 5965213.33 676243.99 70.31053966 - 148.57177680 9220.47 64.88 6.40 6686.48 6746.83 3986.17 4247.77 4151.20 4133.72 380.54 1.37 5965298.40 676251.41 70.31077153 - 148.57170055 9315.73 64.47 5 42 6727.23 6787.58 4068.57 4333.87 4237.29 4219.36 389.41 1.02 5965384.22 676258.27 70.31100550 - 148.57162867 9409 35 64.48 5.29 6767.57 6827.92 4149.66 4418.35 4321.78 4303.48 397.29 0.13 5965468.49 676264.18 70.31123529 - 148.57156475 9503.33 64.62 4.92 6807.96 6868.31 4231.21 4503.21 4406.64 4388.00 404.85 0.39 5965553.16 676269.75 70.31146620 - 148.5715035 9597.68 64 78 5.17 6848.28 6908.63 4313.20 4588.51 4491.93 4472.97 412.35 0.29 5965638.28 676275.26 70.31169833 - 148.57144271 9691.72 64 75 5.73 6888 37 6948.72 4394.81 4673.58 4577.00 4557.65 420.43 0.54 5965723.12 676281.35 70.31192967 - 148.57137721 9786.60 65.02 5.48 6928.64 6988.99 4477.16 4759.49 4662.91 4643.15 428.82 0.37 5965808.79 676287.74 70.31216325 - 148.57130918 9879.34 63.61 6.92 6968.84 7029.19 4557.01 4843.06 4746.47 4726 23 437.84 2.07 5965892 05 676294.81 70.31239022 - 148.57123606 9973.49 59.85 9.12 7013.43 7073.78 4635.42 4925.97 4829.28 4808.32 449.37 4.49 5965974.39 676304.42 70.31261449 - 148.57114252 10066.93 55.90 10 62 7063.11 7123.46 4709.37 5005.08 4908.15 4886.27 462.91 4.44 5966052.62 676316.13 70.31282743 - 148.57103278 10161.82 52.30 12.66 7118.74 7179 09 4780.34 5081.93 4984.55 4961.54 478.39 4 17 5966128.23 676329.84 70.31303306 - 148.57090735 10255.91 48 33 14.71 7178.82 7239.17 4846.15 5154.32 5056.22 5031.88 495.48 4.54 5966198.95 676345.27 70.31322522 - 148.57076883 10348.99 46.30 17.36 7241.93 7302.28 4907.12 5222.74 5123.52 5097.63 514.35 3.02 5966265.12 676362.60 70.31340485 - 148.57061588 10442.94 43.87 20 63 7308.26 7368 61 4964.77 5289.25 5188.29 5160.53 535.96 3 57 5966328.50 676382.73 70.31357668 - 148.57044073 10536.49 40.25 21.99 7377.71 7438.06 5017.77 5351.91 5248.74 5218 92 558 70 3.99 5966387.40 676404.10 70.31373617 - 148.57025638 10639.30 37.32 23.48 7457.84 7518.19 5071.37 5416.30 5310.48 5278 32 583.55 2.99 5966447.36 676427 55 70.31389845 - 148.57005497 10732.32 32.66 31 07 7534.07 7594.42 5113.32 5469.57 5360.30 5325.73 607.76 6.86 5986495.33 676450 63 70.31402797 - 148.56985880 10825.48 30.03 30.29 7613.62 7673.97 5149.53 5518 03 5404.54 5367.40 632.49 2.86 5966537.56 676474.38 70.31414180 - 148.56965833 10919.53 31.48 33.40 7694.45 7754.80 5184.79 5566.12 5448.09 5408.22 657.88 2.29 5966578.97 676498 81 70.31425333 - 148.56945254 11015.17 33.77 36.12 7775.00 7835.35 5220.76 5617.67 5493.71 5450.55 687.30 2.84 5966621.97 676527.23 70.31436895 - 148.56921409 11108 57 34.11 36.30 7852.48 7912.83 5256.22 5669.82 5539.37 5492.63 718.11 0.38 5966664.75 676557.04 70 31448389 - 148.56896442 11175 14 34.08 36 56 7907.61 7967.96 5281.49 5707.13 5572.04 5522 65 740.27 0.22 5966695.28 676578.49 70.31456591 - 148.56878481 Drilling Office 2009 1 716 0 Prudhoe Bay Unit - EOA\DS- 15 \15- 27115- 27A \15 -27A 6/111201010:05 AM Page 2 of 5 MD Inc! Azim True TVDSS TVD VSEC AHD Closure NS EW DLS Northing Easting Latitude Longitude comments (ft) ( °) (°) (ft) (ft) (ft) (ft) (ft) (ft) (ft) ( °I1OOft) (ftUS) (ftUS) ( °) ( °) 11268.17 34.36 36.94 7984 54 8044.89 5316.70 5759.45 5617.81 5564.57 771.57 0.38 5966737.92 676608.80 70 31468042 - 148.56853110 11363 14 34.97 40.04 8062.65 8123.00 5351.80 5813.46 5664.35 5606.83 805.19 1.96 5966780.95 676641.42 70 31479586 - 148.56825863 11405.17 35.04 41.10 8097.08 8157.43 5366.80 5837.57 5684 72 5625.15 820.87 1.46 5966799.63 676656.66 70.31484589 - 148.56813154 11445.70 35.17 38.79 8130.24 8190.59 5381.50 5860.87 5704.58 5643.01 835.83 3.29 5966817.84 676671.20 70.31489470 - 148.56801027 11491 14 29.19 36.51 8168.68 8229.03 5397.47 5885 06 5725.68 5662.14 850.64 13.43 5966837.30 676685.56 70.31494694 - 148.56789028 11522.65 28.82 35.60 8196.24 8256.59 5407.89 5900.34 5739.23 5674.49 859.63 1 83 5966849.86 676694 26 70.31498068 - 148.56781739 11553.56 28.45 35.48 8223.37 8283.72 5418.08 5915.15 5752.44 5686.54 868.24 1.21 5966862.11 676702.58 70.31501361 - 148 56774760 11584.37 26.86 33.70 8250.66 8311.01 5428.09 5929 45 5765.30 5698 31 876.36 5.82 5966874.07 676710.42 70.31504575 - 148.56768177 11616.11 26.76 34.88 8278.99 8339.34 5438.17 5943.77 5778.22 5710.14 884.43 1 71 5966886.08 676718 21 70.31507806 - 148.56761640 11647.64 27.75 36.04 8307.02 8367.37 5448.13 5958.20 5791.13 5721.90 892.81 3.56 5966898.03 676726.31 70.31511018 - 148.56754849 11679.16 32.31 37.60 8334.30 8394.65 5458.72 5973 97 5805.06 5734 51 902.27 14.68 5966910.86 676735.47 70.31514464 - 148.56747180 11710.49 36.62 38.31 8360.13 8420.48 5470.36 5991.70 5820.56 5748 48 913.17 13 82 5966925.08 676746.05 70.31518281 - 148.56738340 11741.80 38.80 37.69 8384.89 8445.24 5482.94 6010.85 5837.32 5763.57 924 96 7.07 5966940.45 676757.48 70.31522403 - 148.56728785 11773.31 41 35 38.33 8409.00 8469 35 5496.26 6031.13 5855.09 5779.55 937.46 8.20 5966956.71 676769.59 70.31526769 - 148.56718659 11805 05 42.45 35.71 8432.63 8492 98 5510.45 6052.33 5873.85 5796 48 950.21 6.51 5966973.93 676781.95 70.31531392 - 148.56708320 11835.87 45.30 37.68 8454 85 8515.20 5524.83 6073.69 5892.81 5813.60 962.98 10.25 5966991.34 676794.31 70.31536068 - 148.56697970 11866.75 48.19 39.80 8476.00 8536.35 5539.37 6096.17 5912.42 5831.13 977.06 10.61 5967009.20 676807.98 70.31540857 - 148.56686558 Tie -In Survey 11898.41 50.92 41.01 8496.54 8556.89 5554.41 6120.26 5933.10 5849.47 992.68 9.10 5967027.90 676823.16 70.31545867 - 148.56673898 11926.82 53.67 38.77 8513.92 8574.27 5568 61 6142.74 5952.53 5866.72 1007.08 11.51 5967045.48 676837.16 70.31550579 - 148.5666222 11957.25 49 48 37.64 8532.82 8593.17 5584.19 6166.57 5973.49 5885.44 1021.83 14.07 5967064.54 676851.46 70.31555693 - 148.5665026 11989 20 49.08 34.06 8553.67 8614.02 5600.76 6190.78 5995.26 5905.06 1036.01 8.58 5967084.49 676865.18 70.31561053 - 148.56638776 12020.78 53.51 32.40 8573.41 8633.76 5618.43 6215.42 6017.90 5925.68 1049.50 14.61 5967105.41 676878.18 70.31566684 - 148.56627839 12052.23 57.20 30 07 8591.29 8651.64 5637.61 6241.29 6042.03 5947.80 1062.90 13.22 5967127.84 676891.06 70.31572727 - 148.56616975 12083.28 61.03 28 83 8607.23 8667.58 5657.90 6267.93 8067.18 5971.00 1076.00 12.80 5967151.34 676903.61 70.31579065 - 148.56606361 12114.48 65.52 28 11 8621.26 8681 61 5679.43 6295.79 6093.64 5995.49 1089.28 14.54 5967176.14 676916 31 70.31585756 - 148.56595597 12145.31 69.77 2594 8632.98 8693.33 5701 90 6324.30 6120 95 6020.89 1102 22 15.24 5967201.83 676928.65 70.31592693 - 148.56585104 12176.80 70.34 25.69 8643.72 8704.07 5725 61 6353.90 6149.49 6047.54 1115.11 1.96 5967228.77 676940.91 70.31599972 - 148.56574654 12208.49 73.14 25.61 8653.65 8714.00 5749.77 6383.99 6178 53 6074.66 1128.14 8.84 5967256.19 676953.30 70.31607382 - 148.56564094 12239.26 76 41 24.98 8661.73 8722.08 5773.71 6413.67 6207 24 6101.50 1140.82 10.81 5967283.31 676965.35 70.31614714 - 148.56553812 12270.55 79.63 23.25 8668.22 8728.57 5798.76 6444.28 6237 00 6129.44 1153 32 11.63 5967311 53 676977.19 70.31822345 - 148 56543677 12301 53 84.81 22.44 8672.42 8732.77 5824.26 6474.96 6266 99 6157.71 1165 23 16.92 5967340 08 676988.44 70.31630070 - 148.56534020 12333.41 89.00 23.26 8674.14 8734 49 5850.71 6506.79 6298.11 6187.04 1177 59 13.39 5967369.69 677000.11 70.31638082 - 148.56524000 12364.85 91.88 22.29 8673.90 8734.25 5876.86 6538.23 6328.86 6216.03 1189.76 9.67 5967398.95 67701159 70.31645999 - 148.56514133 12396.02 93.28 21.99 8672 49 8732.84 5902.94 6569.36 6359.40 6244.87 1201.49 4.59 5967428.05 677022.65 70 31653878 - 148.56504619 12427.56 93.80 22.15 8670.55 8730.90 5929.34 6600.84 6390.29 6274.04 1213.32 1.72 5967457.49 677033.79 70 31661847 - 148.56495029 12458 99 94 38 22.64 8668.30 8728.65 5955.53 6632.19 6421.01 6303.03 1225.27 2 41 5967486.75 677045.05 70.31669765 - 148.56485345 12490.31 94.93 22.05 8665.76 8726.11 5981.62 6663.41 6451.62 6331.90 1237.13 2.57 5967515.89 677056.24 70.31677653 - 148.56475723 12521.41 96.04 19.68 8662.79 8723 14 6007.92 6694 37 6482.13 6360 82 1248.16 8.38 5967545.06 677066 58 70.31685554 - 148.56466783 12554.46 94.73 18.88 8659.69 8720 04 6036.35 6727.27 6514.70 6391.88 1259.02 4.64 5967576.36 677076 72 70.31694038 - 148.56457974 12585.07 92 28 18.36 8657.82 8718.17 6062.92 6757.82 6544.99 6420.83 1268.78 8.18 5967605.53 677085.79 70.31701947 - 148.56450064 12615.87 91.95 18.08 8656.68 8717.03 6089 80 6788.60 6575.54 6450.07 1278.40 1.40 5967634.98 677094.72 70.31709934 - 148.56442260 12647.52 92.19 16.42 8655.54 8715.89 6117.67 6820.23 6606.99 6480.27 1287.78 5.30 5967665.40 677103.39 70.31718185 - 148.5643465 12679.48 92.29 15.21 8654 29 8714.64 6146.19 6852 16 6638.83 6511.00 1296.48 3.80 5967696 32 677111.37 70.31726579 -148 56427596 12710.70 92.94 13.33 8652 86 8713.21 6174.40 6883 35 6669.97 6541.22 1304.17 6.37 5967726 71 677118.35 70.31734835 - 148.56421361 12742.62 94.63 12.15 8650 76 8711 11 6203.56 6915 20 6701.81 6572 29 1311.20 6.45 5967757.93 677124.64 70 31743322 - 148.56415664 12773.54 95.14 11.93 8648 12 8708.47 6231.92 6946 01 6732.61 6602.42 1317.62 1.80 5967788.20 677130.36 70.31751552 - 148.56410451 12803.94 95.55 11.91 8645.29 8705.64 6259 81 6976.28 6762.88 6632.03 1323.87 1.35 5967817.95 677135.92 70.31759643 - 148.56405380 12836.84 94.87 12.84 8642.30 8702.65 6289.90 7009.04 6795.64 6664.04 1330.90 3.49 5967850.11 677142.19 70.31768385 - 148.56399685 12867.85 93.32 13.03 8640.09 8700.44 6318.18 7039 97 6826.55 6694.18 1337.82 5.04 5967880.40 677148.40 70.31776620 - 148.56394069 12897 87 93.73 13.17 8638.24 8698.59 6345.54 7069.93 6856.50 6723.36 1344.61 1.44 5967909.74 677154.51 70.31784592 - 148.56388560 12929.68 94.17 13.27 8636.05 8696.40 6374.49 7101.67 6888.22 6754.26 1351.87 1.42 5967940.79 677161.04 70.31793032 - 148.56382673 12961.82 91.74 12.83 8634.40 8694.75 6403.81 7133.76 6920.30 6785.52 1359.11 7.68 5967972.21 677167.55 70.31801573 - 148.56376795 12993.26 89.36 11.22 8634 09 8694.44 6432.76 7165.20 6951.73 6816.27 1365.66 9.14 5968003 10 677173.38 70.31809972 -148 56371482 13025.27 89.95 10.60 8634.29 8694.64 6462.46 7197.21 6983.74 6847.70 1371.72 2.67 5968034 66 677178.70 70.31818559 - 148 56366567 13054.59 91 74 7.80 8633.85 8694.20 6489 98 7226.52 7013.03 6876.64 1376.41 11.33 5968063.70 677182.71 70.31826463 - 148.56362764 13086.62 92.67 7.53 8632.62 8692.97 6520.31 7258 53 7044.97 6908.36 1380.68 3.02 5968095.51 677186.23 70.31835129 - 148.56359299 13118.10 92.80 6.93 8631.12 8691.47 6550.19 7289.97 7076 34 6939.55 1384.63 1.95 5968126.78 677189.46 70.31843650 - 148.56356087 13148.94 91.88 3.36 8629.86 8690.21 6579.79 7320.79 7106 97 6970.23 1387.40 11.94 5968157.52 677191.50 70.31852033 - 148.56353843 13179.56 90.47 1.59 8629.23 8689.58 6609.56 7351 40 7137.22 7000.82 1388 72 7.39 5968188.13 677192 11 70.31860388 - 148.56352767 Drilling Office 2009 1 716 0 Prudhoe Bay Una - EOA/DS- 15/15- 27/15- 27A/15 -275 6/11/2010 10 05 AM Page 3 of 5 Comments MD Inel Azim True TVDSS TVD VSEC AHD Closure NS EW DLS Northing Easting Latitude Longitude (ft) ( °) ( °) (ft) (ft) (ft) (ft) (ft) (ft) (ft) 0100ft) (ftUS) (ftUS) (°) ( °) 13211.33 89.65 0.78 8629.20 8689.55 6640.62 7383.17 7168 51 7032.58 1389.38 3.63 5968219.89 677192.02 70.31869065 - 148.56352230 13243.74 88.31 357.78 8629.78 8690.13 6672.51 7415.57 7200.22 7064.98 1388.97 10.14 5968252.27 677190.85 70.31877916 - 148.56352555 13274.04 88.14 356.04 8630.71 8691.06 6702.51 7445.86 7229.58 7095.22 1387.34 5.77 5968282.46 677188.51 70 31886178 - 148.56353873 13305.25 88.00 354 77 8631.77 8692.12 6733 51 7477.05 7259.62 7126.31 1384.84 4.09 5968313.49 677185.29 70.31894672 - 148.56355894 13334.94 86.17 353.68 8633.28 8693.63 6763 04 7506.70 7288.01 7155.81 1381 85 7.17 5968342 91 677181.62 70 31902731 - 148.56358307 13368.41 85 84 351.21 8635.61 8695 96 6796.37 7540.09 7319.68 7188.90 1377 46 7.43 5968375.89 677176.45 70.31911773 - 148.56361860 13400 06 86.42 348.75 8637.74 8698 09 6827.94 7571.67 7349.20 7220.00 1371.97 7.97 5968406.84 677170.23 70.31920267 - 148.56366309 13432.29 87.07 346.13 8639.57 8699 92 6860.10 7603.85 7378 75 7251.40 1364 97 8.36 5968438.07 677162.50 70.31928847 - 148.56371976 13463.42 87.49 345.43 8641.05 8701.40 6891.14 7634.94 7406.97 7281.55 1357.34 2.62 5968468.02 677154.16 70.31937082 - 148.56378163 13495.24 87.42 342.44 8642.46 8702 81 6922.80 7666.73 7435.40 7312.09 1348.54 9.39 5968498.35 677144.65 70.31945427 - 148.56385288 13525.89 86.11 341.70 8644.19 8704 54 6953.17 7697.33 7462.34 7341.20 1339.12 4.91 5968527.24 677134.55 70.31953381 - 148.56392919 13553.86 84.23 339.69 8646.55 8706.90 6980 75 7725.20 7486.57 7367.50 1329.91 9.82 5968553.31 677124.73 70.31960567 - 148 56400383 13588.44 83.74 337.26 8650.17 8710.52 7014.55 7759.59 7515.83 7399.49 1317.29 7.13 5968584.99 677111 37 70.31969307 - 148.56410605 13619.20 85.94 335.42 8652.94 8713.29 7044.43 7790.22 7541.32 7427.55 1305.00 9.31 5968612.75 677098.42 70.31976972 - 148.56420566 13651.35 89.48 335.47 8654.22 8714.57 7075.65 7822.34 7567.81 7456.76 1291.65 11.01 5968641.65 677084 39 70.31984954 - 148.56431381 13682 76 92.05 333.10 8653.81 8714.16 7106.01 7853.75 7593.38 7485.06 1278.02 11.13 5968669.61 677070 11 70.31992684 - 148.56442421 13713.56 92.29 331 69 8652.64 8712.99 7135.50 7884.52 7617 89 7512.33 1263.76 4.64 5968696.54 677055.22 70.32000135 - 148.56453978 13744.20 89.85 331.09 8652.07 8712.42 7164.69 7915.16 7642 00 7539.22 1249.09 8.20 5968723 08 677039.92 70.32007483 - 148.56465864 13777.66 87.33 328.58 8652.89 8713.24 7196.27 7948.60 7667.81 7568 14 1232.29 10.63 5968751.59 677022.45 70.32015383 - 148.5647948 13807.30 88.00 325.14 8654.10 8714.45 7223.69 7978.22 7689.70 7592 93 1216.10 11.81 5968776.00 677005.68 70.32022157 - 148.5649260 13838.85 89.92 324.33 8654.67 8715.02 7252.43 8009.76 7712.28 7618.69 1197.89 6.60 5968801.32 676986.88 70 32029194 - 148.56507360 13869.79 90.40 324.39 8654.58 8714.93 7280.54 8040.70 7734.35 7643.83 1179.86 1.56 5968826.03 676968.26 70 32036064 - 148.56521970 13902.64 90.57 323.56 8654.31 8714.66 7310.30 8073.55 7757.70 7670 40 1160.54 2.58 5968852.14 676948.33 70.32043323 - 148.56537628 13932.57 90.57 323.58 8654.01 8714.36 7337 31 8103.48 7778.88 7694.48 1142 77 0.07 5968875.79 676930.00 70.32049902 - 148.56552031 13964.51 90.64 324.19 8653.67 8714.02 7366.22 8135.42 7801.66 7720.28 1123 94 1.92 5968901.14 676910.58 70.32056951 - 148.56567288 13996 08 90.40 324.25 8653.38 8713 73 7394.87 8166.99 7824.38 7745.89 1105.49 0.78 5968926.31 676891.53 70.32063949 - 148.56582246 14026.42 90 47 325 97 8653.15 8713.50 7422.60 8197.33 7846.59 7770.77 1088 13 5.67 5968950.78 676873.60 70.32070748 - 148.56596310 14058.92 90.54 324 86 8652.87 8713.22 7452 37 8229.82 7870.56 7797.53 1069.69 3.42 5968977.10 676854.53 70.32078058 - 148.56611261 14090.37 90 54 325 22 8652.57 8712.92 7481.10 8261.27 7893.67 7823.30 1051.67 1.14 5969002.44 676835.91 70.32085100 - 148.56625865 14121.63 90.64 325.54 8652 25 8712.60 7509.73 8292.53 7916.83 7849.03 1033.91 1.07 5969027.74 676817.56 70.32092128 - 148.56640258 14153.57 90.78 326.63 8651.85 8712.20 7539 13 8324.47 7940.81 7875.53 1016.09 3.44 5969053 82 676799.12 70.32099369 - 148 56654700 14184.06 90.88 325.44 8651.41 8711.76 7567.19 8354.96 7963.73 7900.82 999.06 3.92 5969078.69 676781.50 70.32106277 - 148.56668504 14214.30 89.99 327.24 8651.18 8711 53 7595.09 8385.19 7986.62 7925 98 982.30 6.64 5969103.46 676764.16 70.32113153 - 148.56682087 14246.02 88 98 327 24 8651.47 8711.82 7624.54 8416.91 8011.01 7952.66 965.13 3.18 5969129.72 676746.38 70.32120441 - 148.56695998 14278.17 89.68 326.50 8651.84 8712.19 7654.30 8449.06 8035.64 7979.58 947.56 3.17 5969156.22 676728.18 70.32127796 - 148.56710238 14308.98 88.89 327.50 8652.23 8712.58 7682.86 8479.87 8059 34 8005.41 930.78 4.14 5969181.66 676710.81 70.32134855 - 148.56723837 14340 50 87.18 328.12 8653.31 8713.66 7712.22 8511.37 8083.91 8032.07 914.00 5.77 5969207.92 676693.41 70.32142139 - 148.56737438 14371.90 85.69 328.34 8655.26 8715.61 7741.51 8542 71 8108.54 8058.72 897.50 4 80 5969234.16 676676.29 70.32149418 - 148.56750811 14402.39 86.35 328.21 8657.38 8717.73 7769.95 8573.12 8132.50 8084.59 881.51 2.21 5969259.65 676659.69 70.32156486 - 148.56763774 14433.96 86 70 328.65 8659.29 8719.64 7799.44 8604.63 8157.43 8111.44 865.01 1.78 5969286.10 676642.57 70.32163821 - 148.56777145 14465.73 87.14 329.87 6661.00 8721.35 7829.29 8636.36 8182.84 8138.70 848.80 4.08 5969312.98 676625.72 70.32171271 - 148.5679028 14496.83 87.66 330.14 8662.41 8722.76 7858.66 8667.43 8208.01 8165.61 833.26 188 5969339.51 676609.57 70.32178622 - 148.5680287 14528.66 87.90 329.61 8663.64 8723.99 7888.70 8699.23 8233 78 8193.12 817.30 1.83 5969366 64 676592.97 70.32186138 -148 5681581 14558.65 88 41 330.80 8664.61 8724 96 7917.07 8729.21 8258.21 8219.13 802.41 4.32 5969392.30 676577.47 70.32193245 - 148.56827886 14590.51 89.10 330.11 8665.30 8725.65 7947 26 8761.06 8284.28 8246.84 786.70 3.06 5969419.63 676561.12 70.32200815 - 148.56840616 14622.48 88.96 331.41 8665.84 8726.19 7977.61 8793.02 8310 58 8274.73 771.09 4.09 5969447.15 676544.86 70.32208436 - 148.56853271 14653.38 89.00 331.85 8666.39 8726.74 8007.08 8823.92 8336.30 8301.92 756.41 1.43 5969473.98 676529.55 70 32215863 - 148.56865170 14683.80 88.24 331.91 8667.12 8727.47 8036.14 8854.33 8361 73 8328.74 742.07 2.51 5969500 45 676514.59 70.32223190 -148 56876787 14716.00 87.97 331.49 8668.19 8728.54 8066 86 8886.51 8388.62 8357.07 726.82 1.55 5969528.42 676498.67 70.32230932 - 148.56889154 14747.70 88.34 331.88 8669.21 8729.56 8097.10 8918.20 8415.12 8384.97 711.79 1.70 5969555 95 676483.00 70.32238552 - 148.56901335 14779.11 88.65 331.73 8670.03 8730.38 8127.08 8949.60 8441.46 8412.64 696 95 1.10 5969583 27 676467.52 70.32246113 - 148.56913359 Last Survey 14817.35 88.72 331.63 8670.91 8731.26 8163.57 8987.82 8473 53 8446.29 678.82 0.32 5969616.49 676448.60 70.32255307 - 148.56928059 TD (Projected) 14870.00 88.72 331.63 8672.09 8732.44 8213.79 9040.46 8517.74 8492.61 653.81 0.00 5969662.20 676422.51 70.32267961 - 148.56948332 Survey Error Model: ISCWSA Rev 0 •" 3 -D 95.000% Confidence 2.7955 sigma Survey Program: MD From MD To EOU Freq (ft) Survey Tool Type Borehole I Survey (ft) (ft) 0.000 3440.350 Act Stns SLB_MWD-STD 15-27 / 15-27 3440.350 4213.000 Act Stns SLB_NSG +SSHOT 15- 27APB1 / 15- 27APB1 4213.000 11898.410 Act Stns SLB_MWD +GMAG 15- 27APB1 / 15- 27APB1 11898.410 14870.000 Act Stns SLB_MWD +GMAG 15 -27A / 15 -27A Dolling Office 2009 1 716 0 Prudhoe Bay Unit - EOA\DS- 15\1827 \15-27A115 -27A 6/11/2010 10 05 AM Page 4 of 5 Comments MD Inc! Azim True TVDSS ND VSEC AHD Closure NS EW DLS Northing Easting Latitude Longitude (ft) ( °) ( °) (ft) (ft) (ft) (ft) (ft) (ft) (ft) ( . 1100ft) (ftUS) (ftUS) ( °) (°) Legal Description: Northing (Y) Easting (X) Surface: 4954.8 FSL 5221 8 FEL S22 711N R14E UM 5961157.180 675967.790 BHL: 2887 FSL 4550 FEL 10 T11N R14EUM 5969662.240 676422.400 Final Definitive Survey Verify and Sign -off I have checked to the best of my ability that the following data is correct: Surface Coordinates and Reference Elevations Declination Information Survey Tool Codes SLB DE: Client Representative: Date: • • Drilling Office 2009 1.715.0 Prudhoe Bay Unit - EOA \DS- 15\15 - 27115.279 \15.27A &11/20101005 AM Page 5 of 5 by 0 Schlumberger 15- 27APB1 Survey Report (Def Survey) Report Date: May 10, 2010 - 02.36 PM Survey / DLS Computation: Minimum Curvature / Lubinski Client: BP Exploration Alaska Vertical Section Azimuth: 349.050 ° (True North) Field: Prudhoe Bay Unit - EOA Vertical Section Origin: 0 000 ft, 0.000 ft Structure / Slot: DS -15 / 15 -27 TVD Reference Datum: Rotary Table Well: 15 -27 ND Reference Elevation: 60.350 ft above MSL Borehole: 15- 27APB1 Seabed / Ground Elevation: 28.150 ft above MSL UWI / API #: Borehole - 15958483 / 500292224370 Magnetic Declination: 22 283 ° Survey Name: 15- 27APB1 Total Field Strength: 57691.369 nT Survey Date: 10 -May Magnetic Dip Angle: 80.947 ° Tort / AHD / DDI I ERD Ratio: 263.939 ° 1 6385.844 ft / 6.371 / 0.725 Declination Date: April 14, 2010 Grid Coordinate System: NAD27 Alaska State Plane, Zone 04, US Feet Magnetic Declination Model: BGGM 2009 Location Let / Long: N 70° 17' 58.12284 ", W 148° 34' 29.22183" North Reference: True North Location Grid N/E Y /X: N 5961157.180 ftUS, E 675967.790 ftUS Grid Correction: 0.000 ° • Grid Convergence Angle: 1.34182618 ° Total Corr Mag North - >True North: 22.283 ° Grid Scale Factor: 0.99993518 Local Coord Referenced To: Well Head Comments MD Inc' Azim True TVDSS ND VSEC AHD Closure NS EW DLS Northing Easting Latitude Longitude (ft) ( °) ( °) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (e /100ft) (BUS) (ftUS) (e) ( °) RTE 0.00 0.00 0.00 -60.35 0.00 0.00 0.00 0 00 0.00 0.00 0.00 5961157.18 675967 79 70 29947857 - 148.57478384 WRP 28.15 0.00 0.00 -32.20 28.15 0.00 0.00 0 00 0.00 0.00 0.00 5961157.18 675967 79 70.29947857 - 148.57478384 431.35 0.90 186.30 370.98 431.33 -3.02 3.17 3 17 -3.15 -0.35 0.22 5961154.03 675967 52 70.29946997 - 148.57478666 930.35 0.80 135.50 869.94 930.29 -9.67 10.10 9.67 -9.53 1.66 0.15 5961147.69 675969 68 70.29945254 - 148.57477037 1430 35 0.87 84.33 1369 89 1430.24 -12.93 16.91 14.06 -11.64 7.89 0.14 5961145.73 675975.95 70.29944676 - 148.57471997 1939.35 1.58 58.30 1878 77 1939.12 -10.80 27.62 19.26 -7.57 17.70 0.17 5961150.02 675985.67 70.29945788 - 148.57464048 2434.35 1.28 112 80 2373.64 2433 99 -11.45 39.08 29.26 -6.13 28.61 0.27 5961151.72 675996.53 70.29946182 -148 57455218 2942.35 1.10 119 00 2881.53 2941.88 -17 74 49.62 39.57 -10.69 38.10 0.04 5961147.38 676006.13 70.29944935 - 148.57447529 Tie -In Survey 3440.35 0.85 180 50 3379.47 3439.82 -24.43 57.32 45.43 -16.70 42.25 0.20 5961141.47 676010.42 70.29943293 - 148.57444170 3705.00 0.81 145.57 3644.09 3704.44 -28.06 61.04 47.78 -20.21 43.29 019 5961137.99 676011.54 70.29942335 - 148.57443327 3800.00 0.78 156.02 3739.08 3799.43 -29.31 62.35 48 85 -21.35 43.93 0.16 5961136.86 676012 21 70.29942023 - 148.57442807 TOW 3810.00 1.67 175.52 3749.08 3809 43 -29.52 62.57 48.98 -21.56 43.97 9.70 5961136.66 676012.25 70 29941966 - 148.57442775 BOW 3827.00 1.81 184.77 3766 07 3826.42 -30.03 63 08 49.20 -22.08 43.97 1.84 5961136.14 676012.26 70.29941826 -148 57442778 3831.00 2.14 187.03 3770.07 3830.42 -30.16 63.22 49.25 -22.21 43 96 8.48 5961136 00 676012.25 70.29941788 - 148.57442789 3894 00 0 27 48.65 3833.06 3893.41 -31.20 64.33 49.71 -23.28 43.92 3 73 5961134.93 676012.24 70.29941496 - 148.57442816 3925.00 0.88 214.61 3864.06 3924.41 -31.33 64.53 49.71 -23.43 43.84 3.69 5961134.78 676012.17 70.29941456 - 148.57442881 3958.00 1.66 210.54 3897.05 3957 40 -31.87 65.26 49.67 -24.05 43.46 2.38 5961134.16 676011.79 70.29941286 - 148.57443194 3988 00 2.43 170.80 3927.03 3987.38 -32.83 66.29 50.06 -25.05 43.34 5.22 5961133.15 676011.70 70.29941012 - 148.57443291 4019 00 2.37 112.44 3958.01 4018.36 -33.84 67.48 51.11 -25 95 44.03 7.55 5961132.27 678012.42 70.29940768 - 148.5744272 4052.00 1 50 74.39 3990.99 4051.34 -34.18 68 56 52.09 -26.09 45.08 456 5961132.15 676013.47 70.29940729 - 148.5744187 4082.00 2.26 5.57 4020 98 4081.33 -33.58 69.43 52.12 -25.40 45.52 7.38 5961132.86 676013.89 70.29940919 - 148.57441525 4120.00 5.11 355.03 4058 90 4119.25 -31.18 71.87 50.92 -22.96 45.44 7.68 5961135.29 676013.76 70.29941583 - 148.57441585 4213.00 8.69 25.39 4151.23 4211 58 -21.39 82.80 49.69 -12.48 48.10 5.37 5961145.83 676016.16 70 29944446 - 148 57439435 4307.01 14.04 21 27 4243.37 4303.72 -6 01 101.31 55 47 4.57 55.29 5.75 5961163.04 676022 95 70.29949105 - 148.57433615 4332.13 15.71 16.14 4267.65 4328.00 -0 41 107.76 58.32 10.68 57 34 8.46 5961169.20 676024.86 70.29950774 - 148.57431954 4425.63 23.88 11 71 4355.55 4415.90 28.38 139.38 76 83 41.42 64.71 8 88 5961200.10 676031.51 70 29959173 - 148.57425983 4518.94 28.92 9.22 4439.11 4499.46 67.01 180.85 109.39 82.21 72.16 5.53 5961241.06 676038.00 70.29970317 - 148.57419947 4611.72 33.63 5.71 4518.39 4578.74 112.71 228.99 151.73 129.95 78 32 5.44 5961288 92 676043.04 70.29983359 - 148.57414963 4706 48 35.63 9.84 4596.37 4656.72 163.67 282.82 202.30 183.27 85 65 3.25 5961342 40 676049.12 70.29997925 - 148.57409027 480120 38.20 8.85 4672.09 4732.44 217.03 339.71 257.52 239.41 94.87 2.78 5961398.72 676057.02 70.30013260 - 148.57401558 4895.19 40.41 8.93 4744.82 4805.17 273.03 399.24 315.86 298.22 104.07 2 35 5961457.74 678064.84 70.30029329 - 148.57394106 4989.47 45.44 6.66 4813.84 4874.19 333.82 463.43 378.97 361.82 112.72 5.58 5961521.51 676072.00 70.30046702 - 148.57387104 5083.77 49.03 6.98 4877 85 4938.20 399.73 532.64 447.21 430.55 120.94 3.82 5961590.41 676078.61 70.30065478 - 148.57380443 5177 72 53.97 6.64 4936 32 4996.67 469.74 606.15 519.95 503.53 129.65 5.27 5961663.58 676085.60 70.30085417 - 148.57373389 5272.11 58 18 7.17 4988 99 5049.34 544.27 684.45 597.67 581.27 139.07 4.48 5961741.50 676093 20 70.30106654 - 148.57365757 Dulling Office 2009.1 716.0 Prudhoe Bay Unit - EOA \DS- 15 \15- 27 \1527APB1 \15- 27APB1 &1120101005 AM Page 10(4 Comments MD Incl Azim True TVDSS TVD VSEC AHD Closure NS EW DLS Northing Easting Latitude Longitude (ft) ( °) ( °) (ft) (ft) (ft) (ft) (ft) (ft) (ft) (1100ft) (ftUS) (ftUS) (°) (°) 5366.05 62.61 5.32 5035.39 5095.74 622.28 766.11 678.75 662.44 147.93 5 02 5961822.85 676100.15 70 30128828 -148 57358586 5459 43 65.64 4 13 5076.14 5136.49 703.16 850.11 762.05 746.16 154.83 3.44 5961906.71 676105.10 70.30151701 - 148.57352990 5553 83 68.50 2 88 5112.91 5173.26 787.34 937.05 848.18 832.92 160 14 3.27 5961993.57 676108.37 70.30175405 - 148.57348692 5647 48 67.26 1 70 5148.18 5208.53 871.79 1023.80 934.05 919.61 163.61 1.77 5962080.31 676109 81 70.30199086 - 148.57345880 5741 62 66.52 1 52 5185.13 5245.48 956.30 1110.39 1019.77 1006.16 166 04 0.81 5962166.88 676110.22 70.30222731 - 148.57343908 5836.48 65.88 1.03 5223.41 5283.76 1041.12 1197.18 1105 76 1092.93 167.97 0 82 5962253.67 676110.12 70.30246436 - 148.57342342 5928.88 65.28 358.54 5261.61 5321.96 1123.78 1281.31 1188.94 1177.05 167.66 2.54 5962337.76 676107 83 70 30269418 - 148.57342592 6023.05 66.01 357.44 5300.45 5360.80 1208.52 1367.10 1273 48 1262.79 164.65 1.32 5962423.39 676102.82 70.30292840 - 148.57345029 6116.98 65.01 359 90 5339.39 5399.74 1292.79 1452.57 1358.01 1348.23 162.66 2.61 5962508.76 676098 83 70.30316183 - 148.57346640 6211.08 65.46 359.27 5378.81 5439.16 1376.80 1538.02 1442.81 1433.68 162.04 0.77 5962594.16 676096.21 70.30339526 - 148.57347141 6305.65 63.52 0.77 5419.54 5479.89 1460.58 1623.36 1527.64 1519.02 162.06 2.50 5962679.48 676094.23 70.30362841 - 148.57347123 6398.89 62.40 0.78 5461.92 5522.27 1541.89 1706.41 1610.35 1602.06 163.18 1.20 5962762.51 676093.41 70.30385526 - 148.57346211 6493.56 62 89 3.02 5505.43 5565.78 1623.86 1790.49 1694.24 1686.09 165.98 2.16 5962846.58 676094.23 70.30408483 - 148.57343949 6587.39 62 73 5.49 5548.31 5608.66 1704.39 1873.95 1777 67 1769.31 172.17 2.35 5962929.92 676098.47 70.30431218 - 148.57338933 6681.24 63.70 4.36 5590.60 5650 95 1784.98 1957.73 1861.44 1852.78 179.36 1.49 5963013.53 676103.70 70 30454021 -148 57333109 6775.21 63.41 5.44 5632.45 5692.80 1865.91 2041.87 1945.57 1936.61 186.54 1.07 5963097.50 676108.92 70.30476922 -148 5732728 6869.53 64.05 5.19 5674.20 5734.55 1947.11 2126.44 203015 2020.82 194.38 0.72 5963181.86 676114.78 70.30499929 - 148.5732094 6964 41 82.86 6.45 5716.60 5776.95 2028.37 2211.32 2115.02 2105.26 202.98 1.73 5963266.47 676121.40 70.30522996 - 148.57313970 7058.03 63.41 6.02 5758 91 5819.26 2108 16 2294.84 2198.53 2188 28 212.05 0.72 5963349.68 676128.52 70.30545677 - 148.57306622 7152.03 64.95 5.91 5799.85 5860.20 2189.11 2379.45 2283.14 2272.44 220.84 1.64 5963434.01 676135.34 70.30568667 - 148.57299498 7246.21 64.29 6.34 5840.21 5900.56 2270 45 2464.54 2368.23 2357 04 229.92 0.81 5963518.80 676142.44 70.30591780 - 148.57292142 7339.83 64 22 6.19 5880.88 5941.23 2351.00 2548.87 2452.55 2440.86 239.12 0.16 5963602.81 676149.67 70.30614680 - 148.57284686 7434.46 64.95 5.45 5921.49 5981.84 2432.84 2634.34 2538.02 2525.89 247.78 1.05 5963688.01 676156 34 70.30637910 - 148.57277664 7528.69 65.59 4.62 5960.91 6021.26 2515.12 2719.92 2623.60 2611.15 255.29 105 5963773.42 676161.86 70.30661201 - 148.57271578 7622.63 66.15 5 28 5999.32 6059.67 2597.57 2805.66 2709.33 2696.56 262 69 0.88 5963858.97 676167 25 70.30684535 - 148.57265582 7716.33 6412 4.94 6038.71 6099.06 2679.26 2890.66 2794.33 2781.23 270.27 2.19 5963943.79 676172.84 70.30707666 - 148.57259445 7810.04 63.41 5.41 6080.14 6140 49 2760.01 2974.72 2878.39 2864.95 277 85 0.88 5964027.65 676178 46 70.30730536 - 148.57253301 7904.29 64.36 4.62 6121.63 6181.98 284137 3059.35 2963.01 2949.25 285.24 1.26 596411210 676183.88 70.30753567 - 148.57247307 7998.24 65 07 4.43 6161.75 6222.10 2923 24 3144.30 3047 95 3033.93 291.94 0.78 5964196.91 676188.59 70.30778701 - 148 57241878 8092.62 66.02 3.54 6200.83 626118 3006.25 3230.21 3133.83 3119.63 297.91 1.32 5964282.73 676192.55 70.30800115 - 148.57237038 8185.97 64.87 3.89 6239.62 6299.97 3088.39 3315.11 3218.70 3204 36 303.41 1.28 5964367 55 676196.07 70.30823262 - 148.57232580 8279.30 62.95 4.11 6280.66 6341.01 3169.37 3398.93 3302.49 3287 97 309.26 2.07 5964451 27 676199.95 70.30846104 - 148.57227841 8373.92 63 50 4.09 6323.29 6383.64 3250 94 3483.41 3386.94 3372 23 315.30 0.58 5964535.65 676204.02 70.30869122 - 148.57222945 8467.93 63.93 3.57 6364.92 6425.27 3332.44 3567.69 3471.20 3456.33 320.93 0.67 5964619.85 676207.68 70.30892098 - 148.57218382 8561.83 64.67 3.37 6405.64 6465 99 3414.39 3652.31 3555.77 3540.79 326 05 0.81 5964704.40 676210 82 70.30915171 - 148.57214230 8655.73 62.91 5.76 6447.11 6507.46 3495.56 3736.54 3640.00 3624.76 332.74 2.95 5964788.49 676215.54 70.30938110 - 148.57208806 8749.74 62.05 4.62 6490.55 6550 90 3575.64 3819.92 3723.37 3707.78 340.28 1.41 5964871.67 676221.14 70 30960792 -148 57202690 8844.09 63.78 5 32 6533.51 6593.86 3656.42 3903 92 3807 36 3791.47 347.56 1.95 5964955.49 676226.46 70.30983653 - 148.57196788 8938.08 66.75 5.04 6572.83 6633.18 3738.41 3989.27 3892.72 3876.48 355.27 3.17 5965040.65 676232.17 70.31006877 -148 5719054 9032.88 66.82 4.88 6610.20 6670.55 3822.20 4076 40 3979.84 3963.27 362.80 0.17 5965127.60 676237.67 70.31030589 - 148.5718443 1 9126.64 66 16 6.25 6647.60 6707.95 3904.63 4162.37 4065.82 4048 84 371.14 1.51 5965213.33 676243.99 70.31053966 - 148.57177680 9220.47 64.88 6.40 6686.48 6746.83 3986.17 4247.77 4151.20 4133 72 380.54 1.37 5965298.40 676251.41 70.31077153 - 148.57170055 9315.73 64.47 5.42 6727.23 6787.58 4068.57 4333.87 4237.29 4219.36 389.41 1.02 5965384.22 676258.27 70.31100550 - 148.57162867 9409.35 64.48 5.29 6767.57 6827.92 4149.66 4418.35 432178 4303.48 397.29 0.13 5965468.49 676264.18 70.31123529 - 148.57156475 9503.33 64.62 4.92 6807.96 6868.31 4231.21 4503.21 4406.64 4388.00 404.85 0.39 5965553 16 676269 75 70.31146620 - 148.57150353 9597.68 64.78 5.17 6848.28 6908.63 4313.20 4588.51 4491.93 4472.97 412.35 0.29 5965638.28 676275.26 70.31169833 - 148.57144271 9691.72 64.75 5.73 6888.37 6948.72 4394.81 4673.58 4577.00 4557.65 420.43 0.54 5965723.12 676281.35 70.31192967 - 148 57137721 9786.60 65.02 5.48 6928.64 6988 99 4477.16 4759.49 4662.91 4643.15 428.82 0.37 5965808.79 676287.74 70.31216325 - 148.57130918 9879.34 63.61 6.92 6968 84 7029.19 4557 01 4843.06 4746.47 4726.23 437.84 2.07 5965892.05 676294 81 70.31239022 - 148.57123606 9973.49 59.85 9.12 7013.43 7073.78 4635.42 4925.97 4829.28 4808.32 449 37 4.49 5965974.39 676304.42 70.31261449 - 148.57114252 10066.93 55 90 10.62 7063.11 7123.46 4709.37 5005.08 4908.15 4886.27 462.91 4.44 5966052.62 676316.13 70.31282743 - 148.57103278 10161.82 52.30 12.66 7118.74 7179.09 4780 34 5081.93 4984.55 4961 54 478.39 4.17 5966128.23 676329.84 70.31303306 - 148.57090735 10255 91 48.33 14.71 7178.82 7239.17 4846.15 5154.32 5056.22 5031.88 495.48 4 54 5966198.95 676345.27 70.31322522 -148 57076883 10348.99 46.30 17.36 724193 7302.28 4907.12 5222.74 5123.52 5097.63 514.35 3.02 5966265.12 676362.60 70.31340485 - 148.57061588 10442.94 43.87 20.63 7308.26 7368.61 4964.77 5289.25 5188.29 5160.53 535.96 3 57 5966328.50 676382.73 70.31357668 - 148.57044073 Drilling Office 2009 1 716 0 Prudhoe Bey Unit - BOA \ DS- 15 \15- 27 \15- 27APB1 \15- 27APB1 6/1120101005 AM Page 2 ofd Comments MD Inc! Azim True TVDSS TVD VSEC AHD Closure NS EW DLS Northing Easting Latitude Longitude (ft) ( °) ( °) (ft) (ft) (ft) (ft) (ft) (ft) (ft) ( . 1100ft) (ftUS) (SUS) ( °) ( °) 10536.49 40.25 21.99 7377.71 7438.06 5017.77 5351.91 5248.74 5218.92 558.70 3 99 5966387.40 676404.10 70.31373617 - 148.57025638 10639.30 37.32 23.46 7457.84 7518.19 5071.37 5416.30 5310.48 5278.32 583.55 2.99 5966447.36 676427.55 70.31389845 -148 57005497 10732.32 32.66 31.07 7534.07 7594.42 5113.32 5469.57 5360.30 5325.73 607.76 6.86 5966495.33 676450.63 70.31402797 - 148.56985880 10825.48 30.03 30.29 7613.62 7673.97 5149.53 5518.03 5404.54 5367.40 632.49 2.86 5966537.56 676474.38 70 31414180 - 148.56965833 10919.53 31.48 33.40 7694.45 7754.80 5184.79 5566.12 5448.09 5408.22 657.88 2.29 5966578.97 676498.81 70.31425333 - 148.56945254 11015.17 33 77 36.12 7775.00 7835.35 5220.76 5617.67 5493.71 5450.55 687.30 2.84 5966621.97 676527.23 70.31436895 - 148.56921409 11108.57 34.11 36.30 7852.48 7912.83 5256.22 5669.82 5539.37 5492.63 718.11 0.38 5966664.75 676557.04 70 31448389 - 148 56896442 11175.14 34.08 36.56 7907.61 7967.96 5281.49 5707.13 5572.04 5522.65 740.27 0.22 5966695.28 676578.49 70 31456591 - 148.56878481 11268.17 34.36 36.94 7984.54 8044.89 5316.70 5759.45 5617.81 5564.57 771.57 0.38 5966737.92 676608.80 70 31468042 - 148.56853110 11363.14 34.97 40.04 8062.65 8123.00 5351.80 5813.46 5664.35 5606.83 805.19 1.96 5966780.95 676641.42 70.31479586 -148 56825863 11405.17 35.04 41.10 8097.08 8157.43 5366.80 5837.57 5684.72 5625.15 820.87 1.46 5966799.63 676656.66 70.31484589 - 148.56813154 11445.70 35.17 38.79 8130.24 8190.59 5381.50 5860.87 5704.58 5643.01 835.83 3.29 5966817.84 676671.20 70.31489470 - 148 56801027 11491.14 29 19 36.51 8168.68 8229.03 5397.47 5885.06 5725.68 5662.14 850 64 13.43 5966837.30 676685.56 70.31494694 - 148.56789028 11522.65 28.82 35.60 8196.24 8256.59 5407.89 5900.34 5739 23 5674.49 859.63 1.83 5966849.86 676694.26 70.31498068 - 148.56781739 11553.56 28.45 35.48 8223 37 8283.72 5418.08 5915.15 5752.44 5686.54 868.24 1.21 5966862.11 676702.58 70.31501361 - 148 56774760 11584.37 26.86 33.70 8250.66 8311.01 5428.09 5929.45 5765.30 5698.31 876.36 5.82 5966874.07 676710.42 70.31504575 - 148.56768177 11616.11 26.76 34 88 8278.99 8339.34 5438.17 5943.77 5778.22 5710.14 884.43 1.71 5968886.08 676718.21 70.31507806 -148 5676164 11647 64 27.75 36.04 8307 02 8367.37 5448.13 5958.20 5791.13 5721.90 892.81 3.56 5966898.03 676726.31 70.31511018 - 148.5675484 11679 16 32.31 37 60 8334.30 8394.65 5458 72 5973.97 5805.06 5734.51 902.27 14.68 5966910.86 676735.47 70 31514464 - 148 56747180 11710 49 36.62 38.31 8360.13 8420.48 5470.36 5991.70 5820.56 5748.48 913.17 13.82 5966925.08 676746.05 70 31518281 - 148 56738340 11741.80 38 80 37.69 8384.89 8445.24 5482.94 6010.85 5837.32 5763.57 924 96 7.07 5966940.45 676757.48 70.31522403 - 148.56728785 11773.31 41.35 38.33 8409 00 8469.35 5496.26 6031.13 5855.09 5779.55 937.46 8.20 5966956.71 676769.59 70.31526769 - 148.56718659 11805.05 42.45 35.71 8432 63 8492.98 5510.45 6052.33 5873.85 5796.48 950.21 6.51 5966973.93 676781.95 70.31531392 - 148.56708320 11835.87 45.30 37.68 8454.85 8515.20 5524.83 6073.69 5892 81 5813.60 962 98 10.25 5966991.34 676794.31 70.31536068 - 148.56697970 11866.75 48.19 39.80 8476 00 8536.35 5539.37 6096.17 5912 42 5831.13 977.06 10.61 5967009.20 676807.98 70.31540857 - 148.56686558 11898 41 50.92 41.01 8496 54 8556.89 5554.41 6120.26 5933.10 5849.47 992.68 9.10 5967027.90 676823.16 70.31545867 - 148.56673898 11929 44 54.97 40 71 8515 24 8575.59 5569.72 6145.02 5954.29 5868.20 1008.88 13.07 5967047.00 678838.91 70.31550983 -148 56660770 11961.51 57.43 38.29 8533.08 8593 43 5586.69 6171.67 5977.44 5888.76 1025 82 9.91 5967067.95 676855.37 70.31556600 -148 56647038 11992.67 57.21 37.74 8549.90 8610.25 5603.91 6197.90 6000.58 5909 42 1041 97 1.64 5967088.99 676871.03 70.31562244 - 148.56633946 12023.98 56.57 37.32 8567.00 8627 35 5621.29 6224.12 6023.85 5930 22 1057.95 2.33 5967110.15 676886.52 70.31567926 - 148.56620995 12055.14 52.15 36.89 8585.16 8645.51 5638.21 6249.44 6046.42 5950.41 1073.22 14.23 5967130.69 676901 31 70 31573440 - 148.56608614 12086.62 47.39 32.94 8605.49 8665.84 5654.92 6273 46 6068 24 5970.09 1086.99 17.89 5967150.69 676914 62 70.31578816 - 148.56597451 12117.88 43.41 28.88 8627.44 8687.79 5671.47 6295.71 6089.06 598916 1098.44 15.73 5967170.02 676925.62 70.31584025 - 148.56588170 12149.53 38 82 26.68 8651.28 8711.63 5687.68 6316.52 6108.91 6007.56 1108.15 15.20 5967188.64 676934.90 70.31589051 - 148.56580296 12180.44 34.88 23.75 8676.01 8736.36 5702.63 6335.05 6126.82 6024.31 1116.07 13 95 5967205.57 676942.41 70.31593628 - 148.56573881 12212.18 34.71 23.21 8702.07 8762.42 5717.57 6353.16 6144.47 6040.93 1123.28 1.11 5967222.35 676949.24 70.31598166 - 148.56568030 Last Survey 12224.02 34.39 22.53 8711.82 8772.17 5723.15 6359.87 6151 03 6047.11 1125.89 4.23 5967228.59 676951.70 70 31599856 - 148 56565915 TD (Projected) 12270.00 34 39 22.53 8749.77 8810.12 5744.81 6385.84 6176.44 6071 10 1135.85 0.00 5967252.81 676961.09 70.31606409 - 148.56557847 Survey Error Model: ISCWSA Rev 0*** 3 -D 95.000% Confidence 2.7955 sigma • Survey Program: MD From MD To EOU Freq (ft) Survey Tool Type Borehole / Survey (ft) (ft) 0.000 3440.350 Act Stns SLB_MWD -STD 15 -27 / 15 -27 3440.350 4213 000 Act Stns SLB_NSG +SSHOT 15- 27AP81 / 15- 27APB1 4213.000 12224 020 Act Stns SLB_MWD +GMAG 15- 27APB1 / 15- 27APB1 12224.020 12270.000 Act Stns SLB_BLIND 15- 27APB1 / 15- 27APB1 Legal Description: Northing (V) Easting (X) Surface: 4954.8 FSL 5221 8 FEL S22 T11N R14E UM 5961157.180 675967.790 BHL: 465 FSL 4073 FEL 10 T11 N R14EUM 5967252.810 676961.090 Final Definitive Survey Verify and Sign -off I have checked to the best of my ability that the following data is correct: Surface Coordinates and Reference Elevations Declination Information Dolling Office 2009 1 718 0 Prudhoe Bay Und- BOA \ DS- 15 \15- 27 \15- 27APB1\15- 27APB1 8/11/2010 10 05 AM Pege3 of 4 Comments MD Inc( Azim True TVDSS TVD VSEC AHD Closure NS EW DLS Northing Easting Latitude Longitude (ft) ( °) ( °) (ft) (ft) (ft) (ft) (ft) (ft) (ft) ( °10Oft) (ftUS) (ftUS) ( (°) Survey Tool Codes SLB DE: Client Representative: Date: • ■ • Drilling Office 20091 716.0 Prudhoe Bay Una - EOAIDS- 15115- 27 \15- 27AP01115- 27APB1 6111201010 05 AM Page 4 of 4 TREE= 4-1116" GM/ WELLHEAD = FMC 41/ SAFEIBOTES: WELL ANCtE > 70 @ 12177' ACTUATOR = E3A KER C DRLG Draft 1 5-27A '4-112" CHROM E 13G*** KB. ELEV = - ------6' f I I BF. ELEV = 33.66' - KOP -= 3810 20" CONDUCTOR, 110' ' Max Angle =96' fp,. 17521' 91-54 H-49, I 2234' H4-1/2" HES X NIP, ID = 3.813" I Datum MD = 10=19.124" I . Datum TVD = 8800 13 CSG, 68#, K-55 X0 TO L-80 H 113' 113-3/8" CSG, 68#, L-80 BTC, 10 =12.415' H 3510' 1. , 3658' H9-5/8" X7' BKR ZXP LTPw / TlEBA CK, 10 = ? I 3673' I-19-5/s" X 7" BKR FLEX LOCK LNR HGR, ID = 6.180' I GAS LIFT MANDRELS ST MD / TVD DEV 'TYPE VLV LATCH PORT DATE 3 3549 3549 1 MMG DCR RKP - 05/18/10 2 7778 6126 64 KBG2 DMY BK 0 05/18/10 1 11096 7903 34 KBG2 DMY BK 0 05/18/10 19-5/8" BOT WHIPSTOCK (04/12/10) H 3810' I MILLOUT WINDOW (15-27A) 3810' - 3827' ,,,:-, , 19-5/8" aSV PLUG (04/12/10) H 3830' I ''' :- ' - '&1 - : ' ' 6 ' 3-1/2" TUBING STUB (04112/10 ) H 4063' I - •••• . I • 11131' H4-1/2" HES X NIP, ID = 3.813" 1 . ' 3:1---- 11165" 7' X 4-1/2" HES TNT PKR, ---": ID = 3.856" S I 9-5/8" CSG, 47#, 1-80, ID = 8.681" H 8620' 1 -4I ii $ • I . I:1 k■ 11196' H4-1/2" HES X NIP, ID = 3.813" 1 11266' H4 HES XN NIP, ID = 3.725" I 4 ' • 1 1 I A, 1 I ' 11271' 7" X 5" BKR ZXP LTP, FLEX LOCK HGR w /TIEBACK, ID = 4.20" 11279' 4-1/2" WLEG, ID 3.958" 14 TBG, 12.6#, 13CR-85 YAM TOP, .0152 bpf, ID = 3,958" H 11279' = I N " IT LNR, 26#, L-80 TC11, .0383 bpf , ID = 6.276" 1--I 11446' t ' 1 11297' H5" X 4-1/2" X0, ID = 3.920" I PERFORATION SUMMARY ANGLE AT TOP PERF: 95 @ 12500' 6 I Note: Refer to Production DB for historical pert data SIZE SPF INTERVAL Opn/Sqz DATE ,, 2-7/8" 6 12500' -12900' 0 05/16/10 I 2-7/8" 6 13620' - 14180' 0 05/16/10 1 i 1 , 2-7/8" 6 14360 -14720' 0 05/16/10 1 I F9TD 11 14773' 1.----. 4-1/2" LNR, 12.6#, L-80 IBT-M, .0152 bpf, ID = 3.958" H 14862' DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 02/15/92 D-09 ORIGINAL COMPLETION WELL: 15-27A 05/19/10 N7ES SIDETRACK (15-27A) PERMIT No: '2100230 Cib,22/10 PJC DREG HO CORRECTIONS API No: 50-029-22243-01 SEC 22 T11N R14E, 325' FNL & 58' rm. BP Exploration (Alaska) , •R3kI5z7/4 Regg, James B (DOA) QTb 2 ∎ 0 _ 02-3 From: NSU, ADW Drlg Rig 7 ES [NSUADWDrIgRig7 @BP.com] Sent: Saturday, April 24, 2010 8:31 AM To: Regg, James B (DOA); DOA AOGCC Prudhoe Bay; Brooks, Phoebe L (DOA) Cc: NSU, ADW Drl Rig 7 ES; NSU, ADW Drl Field Superintendent; Thompson, Jacob 9 9 9 p Subject: Emailing: Well kill notification to AOGCC, 23 Apr 10.doc Attachments: Well kill notification to AOGCC, 23 Apr 10.doc Well kill notification to AOGC... «Well kill notification to AOGCC, 23 Apr 10.doc» Hello, Attached, you will find our well kill operation notification memorandum from 23 Apr 10. If you have any questions, please give us a call at 659 -4835. Vr, Dave Newlon and Gator Platt BP WSLs, NAD Rig 7ES The message is ready to be sent with the following file or link attachments: Well kill notification to AOGCC, 23 Apr 10.doc Note: To protect against computer viruses, e -mail programs may prevent sending or receiving certain types of file attachments. Check your e -mail security settings to determine how attachments are handled. 1 . 1 p% b .?/a - vz 5 23 Apr 10 MEMORANDUM FOR AOGCC FROM: Nabors Rig 7ES WSL SUBJECT: Well Kill Operation on DS 15 -27A On 23 Apr 10 at 1130 hrs, we experienced a kick at 11,244 ft MD and 8,026 ft TVD. We were 50 ft into the Put River formation. The Put River was estimated to have 10.1 ppg EMW. Current mud weight was 10.3 ppg and ECD was running at 10.9 ppg. The kick was detected after a 6% increase in return flow and a 3 -bbl gain. We pulled up and placed the drill pipe joint above the BOP Rams and shut -in the well. After 5 minutes, we had SIDPP of 60 psi and SICP of 80 psi. We continued to monitor pressures until they stabilized at 100 psi SIDPP and 80 psi SICP. At 1130 hrs, AOGCC was notified and AOGCC inspector Bob Noble responded at noon. A decision was made to proceed to circulating out the kick via the Miller's Method. This attempt was unsuccessful due being unable to achieve full returns. With the lack of full returns, it was suspected that a previous thief zone at 9,830' started to take fluid again. During the first and second attempt to circulate, a total of 39 bbls was pumped and 30 bbls was lost to the hole. At 1445 hrs, we shut the well in again and monitored the well. At this time, SIDPP was 150 psi and SICP was 90 psi. After consulting with the Anchorage Rig team, a decision was made to pump Kill Weight Mud up to the suspected thief zone. The KWM was calculated to compensate for the MW above 9,830'. KWM of 14.0 ppg was placed from 9,830' MD to TD of 11,244'. / /Signed// DAVE NEWLON BP WSL, NAD Rig 7ES • • n Lly W\i'S SEAN PARNELL, GOVERNOR ALASKA OIL ANI) GALS 333 W. 7th AVENUE, SUITE 100 CONSERVATION COMMISSION ANCHORAGE, ALASKA 99501 -3539 PHONE (907) 279 -1433 FAX (907) 276 -7542 Mr. Greg Hobbs Engineering Team Leader BP Exploration (Alaska) Inc. P.O. Box 196612 Anchorage, Alaska 99519 -6612 Re: Prudhoe Bay Bay Field, Prudhoe Ba Oil Pool, PBU 15 -27A BP Exploration (Alaska) Inc. Permit No: 210 -023 Surface Location: 324' FNL, 58' FWL, Sec. 22, Ti 1 N, R14E, UM Bottomhole Location: 2812' FSL, 710' FWL, Sec. 10, T 11 N, R14E, UM Dear Mr. Hobbs: 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. In accordance with 20 AAC 25.005(0, all records, data and logs acquired for the pilot hole must be clearly differentiated in both name 15 -27A and API number 50- 029 - 22243 -70 from records, data and logs acquired for well 15 -27A. 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, jet Daniel T. Seamount, Jr. Chair DATED: This day of March, 2010. cc: Department of Fish & Game, Habitat Section w/o encl. (via e -mail) Department of Environmental Conservation w/o encl. (via e -mail) STATE OF ALASKA RECEIVED,466 ALAS•IL AND GAS CONSERVATION COMMI DN .4-.2510 PERMIT TO DRILL FEB 2 4 2010 20 AAC 25.005 1 a. Type of work: 1 b. Proposed Well Class: ® Development Oil ❑ Service - Winj ❑ Single Zone 1 ❑ Drill ® Redrill ❑ Stratigraphic Test ❑ Development Gas ❑ Service - Supply ❑ Multiple Zone ❑ Coalbed 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 15 -27A - )•1e 3. Address: 6. Proposed Depth: 12. Field / Pool(s): h o L• P.O. Box 196612, Anchorage, Alaska 99519 - 6612 MD 14785' TVD 8717' Prudhoe Bay Field / Prudhoe 4a. Location of Well (Govemmental Section): 7. Property Designation (Lease Number): Bay Oil Pool Surface: ADL 028306 & 028303 324' FNL, 58' FWL, SEC. 22, T11N, R14E, UM Top of Productive Horizon: 8. Land Use Permit: 13. Approximate Spud Date: 572' FSL, 1263' FWL, SEC. 10, T11N, R14E, UM April 19, 2010 Total Depth: 9. Acres in Property: 14. Distance to Nearest Property: 2812' FSL, 710' FWL, SEC. 10, T11 N, R14E, UM 2560 15,000' . 4b. Location of Well (State Base Plane Coordinates - NAD 27): 10. KB Elevation above MSL: — 60.7 feet 15. Distance to Nearest Well Open Surface: x- 675968 y- 5961157 Zone- ASP4 GL Elevation above MSL: 32.2' feet to Same Pool: 1,700' 16. Deviated Wells: Kickoff Depth: 3810 feet 17. Maximum Anticipated Pressures in psig (see 20 AAC 25.035) Maximum Hole Angle: 90 degrees Downhole: 4170 Surface: 3380 18. Casing Program: Specifications Top - Setting Depth - Bottom Quantity of Cement, c.f. or sacks Hole Casing Weight Grade Coupling Length MD TVD MD TVD (including stage data) 8 -1/2" 7" 26# L -80 TCII 7747' 3660' 3659' 11407' 8177' 197 cu ft Class 'G' 6 - 1/8" 4 - 1/2" 12.6# L - 80 TCII 3528' 11257' 8046' 14785' 8717' 494 cu ft 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 TVD (ft): Junk (measured): 11300' 8794' 10200' 10219' 8844' None Casing Length Size Cement Volume MD TVD Conductor / Structural 110' 20" 232 cu ft Coldset II 110' 110' Surface 3510' 13 -3/8" 2584 cu ft Coldset III. 460 cu ft Class 'G' 3510' 3509' Intermediate 8620' 9 2780 cu ft Class 'G' 8620' 8255' Production Liner 2219' 7" 543 cu ft Class 'G' 8268' - 10487' 8022' - 8854' Liner 1092' 4-1/2" Uncemented Slotted Liner 10208' - 11300' 8842' - 8794' Perforation Depth MD (ft): 10060' - 11300' Perforation Depth TVD (ft): 8822' - 8794' 20. Attachments: ❑ Property Plat ❑ BOP Sketch ® Drilling Program ❑ Time vs Depth Plot ❑ Shallow Hazard Analysis ❑ Diverter Sketch ❑ Seabed Report ® Drilling Fluid Program 18120 AAC 25.050 Requirements 21. Verbal Approval: Commission Representative: Date: 22. I hereby certify that the foregoing is true and correct. Contact Jacob Thompson, 564 -5579 Printed Name Greg Hobbs Title Engineering Team Leader Prepared By Name/Number. Signature Phone 564 -4191 Date Terrie Hubble, 564 -4628 Commission Use Only Permit To Drill API Number: P See cover letter for Number: 2A9C 3 I 50- 029 - 22243 -01 -00 �' . / ) other requirements PP Conditions of A roval: If box is checked, well m not be used to explore for, test, or produce coathane, gas hydrates, or gas contained shales: [1 S '�� Other: 41 3 C° p s 4:" `� /� A � 'e Sr _ Samples Req'd: ❑ Yes air Mud Log Req'd: ❑ Yes I'No 4 k z 500 r S /1 n n- '4.1 el- r (5 v-I2s Measures: ['Yes ❑ No Directional Survey Req'd: "Yes ❑ No APPROVED BY THE COMMISSION -0_ / 3 D ate , COMMISSIONER Form 10-401 Revised 07/2009 This permit R a l i s r ill o At rom the date of approval (20 AAC 25.005(9)) Submit In Duplicate • • by 0 To: Alaska Oil & Gas Conservation Commission, Chairperson From: Jacob Thompson, ODE Date: February 18, 2010 Re: 15 -27A Sidetrack Permit to Drill The sidetrack plan for the 15 -27A includes the following: during the pre -rig operations laying cement across the perforations and cutting the 4 -1/2" tubing at approximately 300' below the 9 -5/8" window exit. The whipstock exit out of the 9 -5/8" casing is planed will be done using a n 8 -1/2" milling assembly during rig operations. The intermediate hole will be drilled to the top of the Sag River with an 8 -1/2" BHA where a 7" liner will be run and cemented 1,000' above the 7" shoe with 15.8 ppg glass G tail cement. The production hole will be drilled with a 6 -1/8" BHA initially penetrating through the Ivishak into the Kavik. An openhole sidetrack will then be performed in Zone 2 of the Ivishak and building to horizontal in Zone 1A. The well will then run horizontally through the Ivishak formation. The liner will be a 4 -1/2" L -80 liner and the tubing will be 4 -1/2" 13Cr, tied into the top of the production liner. Please note the following Well Summary as detailed on the next few pages: 15 -27A Permit to Drill Application Page 1 • 0 Planned Well Summary Horizontal Well 15 -27A Type Sidetrack Object Objective lvashak Zn1 Producer Current Status 15 -27A is not producing because of a production casing leak Estimated Start 19 April 2010? Time to Complete: 26 Days Date: Surface Northing Easting Offsets TRS Location 5,961,157 675,967 324' FNU 58' FWL 11N, 14E, 22 Northing Easting Offsets TRS Target 5,967,360 677,015 4707' FNU1263FWL 11 N, 14E, 10 Locations 5,969,214 676,721 2,847' FNL /1,017' FWL 11N, 14E, 10 Bottom Northing Easting Offsets TRS Location 5,969,586 676,405 2,468' FNL/ 710' FWL 11N, 14E, 10 Planned 3,810' MD / 3,748' Planned TD: 14,785'MD / 8,656' TVDss KOP: TVDss Rig: Nabors 7ES BFE: 32.2' RTE: 60.7' Directional — Schlumberger P KOP: 1 3,810' MD Maximum Hole Angle: -64° in the 8 -1/2" intermediate section (@ KOP) -90° in the 6 -1/8" horizontal section Close Approach Wells: 3 wells minor risked for close approach - pass 1/200. Survey Program: MWD Standard + IFR + Multi Station Nearest Property Line: 15000' (N) Nearest Well within Pool: 15 -17 (1700') Contacts Name Phone # E -mail Drilling Engineer Jacob Thompson 564 -5579 Jacob.Thompson @bp.com Geologist Doug Stoner 564 -5652 Doug.Stoner @bp.com Pad Engineer Nathan Sinyangwe 564 -5062 Nathan.SinyangweAbp.com 15 -27A Permit to Drill Application Page 2 Formation Markers 15 -27A (Based on SOR) • Formation SSTVD MD TVD Thick MD Thick Angle / Pore Pressure SV4 2950 SV3 3482 3543 532 0.74 SV2 3645 3706 163 163 0.6 SV1 4063 4125 418 419 9 UG4 4552 4647 489 522 30 UG3 4817 4979 265 332 43 UG1 5252 5804 435 825 65 WS2 5870 7256 618 1452 65 WS1 6070 7725 200 469 65 CM3 6284 8228 214 503 65 CM2 6738 9294 454 1066 65 CM1' 7322 10455 584 1161 44 THRZ 7702 10929 380 474 30 BHRZ 7885 11140 183 211 30 Put River 7900 11158 15 18 30/ 4170 psi LCU/TJB 7997 11270 97 112 30 TJA 8021 24 TSGR 8116 11408 95 30 TSHA 8156 11454 40 46 30 TSAD 8217 11524 61 70 30 TCGL 8348 11676 131 152 35 BCGL 8404 11749 56 73 44 23SB 8455 11827 51 78 53 22TS 8500 11911 45 84 60/ 3200 psi I 15 -27A Permit to Drill Application Page 3 0 • ' Casing/Tubing Pro ram Hole Csg/ Wt/Ft Grade Conn Burst Collaps Length Top Bottom Size Tbg O.D. (psi) e (psi) MD / TVDrkb MD / TVDrkb 8-Y2" 7" 26.0# L -80 TCII 7,240 5,410 _ 7,747' 3,660' / 3,653' 11407' / 8116' 6 1/8" 4'/2" 12.6# L -80 TCII 8,430 7,500 3,528' 11,257'/ 7,900' 14,785' / 8,656' Tubing 4'h" 12.6# 13Cr Top 8,430 7,500 11,257' Surface 11,257' /7,900' Mud Program Whipstock Milling Mud Properties: LSND I Whip Stock Window 9 -5/8 ", 47# Density (ppg) PV YP API FL HTHP FL MBT PH 9.0 15 -22 30 - 40 6 - 8 N/C <10 9.0 - 9.5 Intermediate Mud Properties: LSND 1 8 -1/2" hole section Depth Interval Density (ppg) PV YP API FL HTHP FL MBT PH 3,839- 10,929' 9.0 — 9.5 10 - 18 18 - 28 <6.0 N/C <15 9.0 -10 10,929'- 11,407' 10.4 -10.8 12 - 22 18 -- 28 4.0 -6.0 <10.0 <20 9.0 -10 (HRZ ) Production Mud Properties: FLOPRO SF Reservoir Drill -in Fluid 1 6 -1/8" hole section Depth Interval Density (ppg) PV YP LSVR API Fl pH MBT 11,407'- 14,785' 8.5 — 9.0 10 -15 22 - 25 >20,000 6.0 -8.0 9.0 -9.5 < 3 Logging Program 8 -1/2" Intermediate: Sample Catchers — as required by Geology Drilling: DIR/GR/Res Open Hole: None Cased Hole: None 6 -1/8" Production: Sample Catchers — as required by Geology Drilling: Dir /GR/Res /Dens!Neu Open Hole: None Cased Hole: None Cement Program Casing Size: 7" 26 #, L -80, TCII Intermediate Liner Basis: Lead: None _ Tail: 1000' of open hole with 40% excess, plus 80' shoe track Tail TOC: 10,407' Total Cement Spacer 30 bbls of Viscosified Spacer weighted to 11.5 ppg (Mud Push II) Volume: Lead N/A Tail 35 bbls, 194.7 cuft, 167.9 sks 15.8 lb/gal Class G + adds —1.16 cuft/sk . Temp BHST = 162° F, BHCT TBD by Schlumberger 15 -27A Permit to Drill Application Page 4 Casing Size: 4.5" 12.6 #, L -80, TCII Production Liner Basis: Lead: None Tail: 200' above the top of the liner Tail TOC: 11,057' Total Cement Spacer 25 bbls of Viscosified Spacer weighted to 12 ppg (Mud Push II) Volume: Lead N/A Tail 88 bbls, 493.4 cult, 425.3 sks 15.8 lb/gal Class G + adds —1.16 cuft/sk Temp BHST = 180° F, BHCT TBD by Schlumberger 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 15 -22 and 15 -21 are both approximately 60' away center to center. . Close Approach Shut -in Wells: 15 -05A and all of it's wellbores fail major risk on the anti - collision report. 15 -05A is the only producing wellbore the . other two wellbores were plugged and abandoned. All three wellbores passed a 1/200 minor risk assessment. A tolerable collision risk worksheet has been filed out. Hydrogen Sulfide Drill site 15 is not designated as an H site. Recent H data from the pad is as follows: Well Name H2S Level Date of Reading #1 Closest SHL Well H2S Level 15 -22 3 ppm 2/13/2001 #2 Closest SHL Well H2S Level 15 -21A 3 ppm 9/23/2007 #1 Closest BHL Well H2S Level 15 -35 11 ppm 9/7/2008 #2 Closest BHL Well H2S Level 15 -19A 10 ppm 4/19/2009 Max. Recorded H2S on Pad/Facility 15 -20C 40 ppm 7/1/2006 Other Relevant H2S Data DS - 15 is not an H2S site, most wells are typically < 20 ppm (H2S alarms from rigs, etc.) Faults The 15 -27A wellpath is expected to encounter two faults. Both faults will be encountered in the production interval. 25' N -NW and a 10 -15' S -SE throws are expected for faults #1 and #2 respectively with both having 100' of uncertainty. The LC potential is considered moderate. Well Control Well control equipment consisting of 5,000 psi working pressure pipe rams (2), blind /shear rams, and annular preventer will be installed and are capable of handling the maximum potential surface pressures. Based upon calculations below, BOP equipment will be tested to 3,500 psi. BOP regular test frequency for 15 -27A 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. 15 -27A Permit to Drill Application Page 5 Intermediate Interval • Maximum anticipated BHP 4,170psi @ 7,895' TVDss (10.2 ppg EMW) Maximum surface pressure 3,380 psi (based upon pressure at TD - 0.10 psi /ft gas gradient to surface) Kick tolerance A LOT /FIT of 13.55ppg yields a kick tolerance of 50.5bbI with 10.5ppg mud Planned BOP test pressure Rams test to 3,500 psi /250 psi. Annular test to 2,500 psi /250 psi 9 -5/8" Casing Test/ 7" Liner 3500 psi surface pressure Integrity Test — 8 -1/2" hole FIT /LOT after drilling 20' from middle of window 7" Casing The VBRs will be changed to 7" rams to accommodate the 7" drilling liner Production Interval Maximum anticipated BHP 3,200 psi @ 8,633' TVDss (7.2 ppg EMW) Maximum surface pressure 2,337 psi (based upon pressure at TD - 0.10 psi /ft gas gradient to surface) Kick tolerance Infinite with a 8.5 ppg mud and 8.5 ppg FIT /LOT Planned BOP test pressure Rams test to 3,500 psi /250 psi. Annular test to 2,500 psi /250 psi Integrity Test — 6 -118" hole FIT /LOT after drilling 20' of new hole Planned completion fluids 8.5 ppg FlowPro / 6.8 ppg Diesel Disposal • No annular injection in this well. • Cuttings Handling: Cuttings generated from drilling operations will be hauled to grind and inject at DS -04. Any metal cuttings will be sent to the North Slope Borough. • Fluid Handling: Haul all drilling and completion fluids and other Class II wastes to DS -04 for injection. Haul all Class I waste to Pad 3 for disposal. 15 -27A Permit to Drill Application Page 6 .► i Drilling Hazards and Contingencies POST THIS NOTICE IN THE DOGHOUSE I. Well Control A. While drilling the intermediate section the Put River formation is expected to be 10.2 ppg EMW. B. The Ivishak in this fault block is expected to be 7.1 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. Drill Site 15 is in the med risk zone for LC according to the WURD lost circulation study. There are 2 expected fault crossings in the planned welibore. Both faults will be encountered in the production section and the lost circulation potential is considered moderate B. In the recently drilled 15 -29B sidetrack to the NW, we did experience severe breathing issues while in the Colville. III. Kick Tolerance /Integrity Testing A. With the a 10.5 ppg mud weight and a 13.55 ppg LOT /FIT a kick tolerance of 50.5 bbls was calculated for the intermediate hole section. The production interval's kick tolerance was calculated to be infinite using a 8.5 ppg mud weight and a 8.8 ppg FIT /LOT. B. Integrity Testing Test Point Test Depth Test EMW (lb /gal) type 9-%" 20 -ft minimum from the 9-%" FIT 13.55 window window 7" shoe 20 -ft minimum from the 7" shoe FIT 8.8 VI. Hydrogen Sulfide A. Drill Site 15 is not considered an H2S site. The highest reading of H2S from 15 -16 is 12 ppm in 2001. The highest recorded H2S level on the pad was 40 ppm on 15 -20C (7/01/2006) VII. Faults A. There are two expected fault crossings in the production interval of 15 -27A. The produce a moderate loss circulation risk. VIII. Anti - Collision Issues A. 15 -05A and all of it's wellbores fail major risk on the anti - collision report. 15 -05A is the only producing welibore the other two wellbores were plugged and abandoned. All three wellbores passed a 1/200 minor • risk assessment. A tolerable collision risk worksheet has been filed out. CONSULT THE DS 15 DATA SHEET AND THE WELL PLAN FOR ADDITIONAL INFORMATION 15 -27A Permit to Drill Application Page 7 • . Operations Summary Current Well Status: 1. 09/12/09: MIT -OA Passed to 2000 psi 2. 09/19/09: MIT -IA Failed, LLR 5 bpm @ 2400 psi Scope Notify the field AOGCC representative with intent to plug and abandon Pre -do prep work: S/E 1 Gyro 15 -05 parent wellbore to reduce collision risk. E 2 Run LDL to find PC leak. LLR 5 bpm @ 2400 psi F 3 Evaluate injectivity into the open perfs to determine P&A method. C/F 4 Lay in or Bullhead /Squeeze cement to plug and abandon the perforations above the Fas -Drill Plug at 10,200'MD. Cement Calculations: 3 -1/2 ", 9.3# liner - .0087 bbls /ft Max TOC - 4,010' MD (Tubing Cut Depth) Min TOC - 9,960' MD (AOGCC Min.) Bottom of Cement - 10,200' MD (FasDrill plug) No clean out necessary to meet P&A objectives SBHP: 3,352 psi SBHT: 180 °F F 5 MIT -T to 2500psi to test cement plug for 30 minutes. MIT -OA to 2000 psi for 30 minutes. D 6 Bleed casing and annulus pressure to 0 psi. S 7 Pull Tubing Patch at 3,133'MD S 8 WOC. Drift for jet Cutter. Tag top of cement plug. E 9 Punch tubing above top of cement tag. Inclination 65° @ 9,091' MD F 10 Circulate well with 9.8 ppg brine kill weight fluid prior to U- tubing diesel for freeze protection. If brine losses are significant with the 9.8 ppg brine, reduce the brine weight as required. E 11 Jet cut 3 -' /z" tubing @ - 4,010' MD in the middle of a full joint. (Ref original completion tubing tally dated 2/14/92). W 12 Function tubing and casing lock down screws. Repair and replace as needed. Perform PPPOT -T and PPPOT -IC. ✓ 13 Set a BPV in the tubing hanger. Secure Well O 14 Remove the well house and flow line. Level the pad as needed for the rig. Provide total well preparation cost on the handover form. Proposed Procedure: (NOTE: This well has 1 good barrier on the IA and tubing. Due to a PC leak, a single barrier dispensation for moving on the well and going through the ND Tree /NU BOPE work will be obtained.) 1. MIRU. 2. MIT - OA 2000 psi for 30 minutes (begin monitoring OA). 3. Pull BPV. Circulate out freeze protection and circulate well to a 9.8 ppg Brine. If brine losses are significant with the 9.8 ppg brine, reduce the brine weight as required. Set a TWC and test from above to 3500 psi for 30 minutes and from below to 1000psi with a rolling test. 4. Nipple down tree. Nipple up and test BOPE to 3,500psi. Pull TWC. 17 -12A Permit to Drill Application Page 8 5. RU and pull the 3 -1/2" tubing from the pre -rig jet cut at -4,010' MD. Records indicate 26 steel clamps around the SSSV lines. Records also show 3/8" line with clamps from CIM @ 8,124' MD Test the lower set of pipe rams. 6. Pick up 9 -5/8" casing scraper. RIH to tubing stub at -4,010' MD, ensure casing is clean. POOH. LD scraper assembly. 7. RIH with RTTS to -4000'. Pressure test casing above RTTS to 3500psi for 30 minutes. a. If test passes, POOH and continue on. b. If test does not pass, use RTTS to locate leak. Contact ODE. Once leak is located, test to equivalent FIT of 10.4 EMW with a 9.3 ppg fluid at 3,809' TVD to confirm kick tolerance. 8. RU E -line, run a 9 -5/8" EZSV w/ GR /CCL for 47# casing. Set the EZSV at -3,825' MD. Rig Down E -line. 9. If casing integrity was confirmed above the RTTS prior to setting EZSV, pressure test the EZSV to 3500 psi for 10 minutes and chart. 10. PU 9 -5/8" whipstock, bottom trip anchor and 8.5" window milling assembly (to include full gauge string mills). RIH to the top of the EZSV. Orient and set the whipstock. Swap the well over to 9.3 ppg fresh water LSND milling fluid. 11. Mill a window in the 9 -5/8" casing at -3810' MD' plus 20' of formation. 12. Perform a FIT /LOT. POOH for drilling BHA. a. NOTE: If PC leak is located above KOP perform FIT to confirm minimum kick tolerance values have been met. 13. MU an 8 -1/2" drilling BHA with DIR /GR /RES and RIH. Kick off and drill 8 -1/2" intermediate interval to 7" casing point at the top of the Sag River CBU, wiper trip to shoe, circulate well clean and I�D POOH. a. NOTE: The mud will need to be weighted up with spike fluid. Plan for one weight -up with the spike fluid to 10.5 ppg over several circulations prior to drilling the HRZ, Put River, and Kingak. 14. Run and partially cement a 7 ", 26#, L -80 drilling liner in the 8 -1/2" wellbore with a minimum of 150' overlap into the 9 -5/8" casing. Set hanger / liner top packer and displace cement with mud. • POOH. 15. Change 9 -5/8" Packoff. 16. M/U a 6-%" DIR /GR /RES /NEU /DEN drilling assembly. P/U additional 4" drill pipe as required to TD the well and RIH to top of the float collar and test the casing to 3,500 psi for 30 minutes. 17. Displace the well to 8.5 ppg Flo-Pro SF fluid 18. Drill out shoe and 20' of new formation and perform an FIT. 19. Drill build section with pilot hole„ per directional proposal. 20. Pull out of pilot hole to the top of Ivishak Zone 2 and begin troughing /time drilling to open hole sidetrack. Land well per geologic data from pilot hole. 21. MU a 6 -1/8" BHA with PDC bit and DIR /GR /RES /NEU /DEN. RIH and drill ahead, per directional proposal and rig site geologist, to TD. 22. CBU at TD. Back ream to shoe, MAD passing as required by geologist. Open circ sub and • circulate the well clean at the shoe and POOH. 23. Run and a cement a 4 -1/2 ", 12.6 #, L -80, IBT -M liner from TD to 150' inside the 7" shoe. Set the . liner top packer and displace the well to seawater. 24. After cement reaches -1000 psi compressive strength, pressure test well to 3500 psi for 30 minutes . and chart. 25. RIH with DPC perf guns. Perf intervals to be determined from LWD logs. Plan to perforate . overbalance. POOH, LD DP and perf guns. 26. Run the 4 -1/2 ", 12.6 #, 13Cr completion tying into the 4 -1/2" liner top. 27. Drop ball & rod and set the production packer and individually test the tubing to 3,500 psi and annulus • to 3,500 psi for 30 minutes each. 28. Shear valve and confirm circulation. 29. Set and test a TWC to 1000psi. 30. ND BOPE. NU and test the tree to 5,000 psi (tree will be changed with 4- 1/16 ") • 31. Pull TWC. Freeze protect the well to 2,200' TVD. 32. Set a BPV. 33. RDMO. 17 -12A Permit to Drill Application Page 9 • • • Post -Riq Work: 1. Pull BPV. 2. Pull ball and rod / RHC plug. Set generic GLV design. 3. Install wellhouse, instrumentation, and flowlines. (S -Riser modification WILL be required.) Drilling Engineer: Jacob Thompson (907) 564 -5579 Production Engineer: Nathan Sinyangwe (907) 564 -5062 Geologist: Doug Stoner (907) 564 -5652 ATTACH: Current Schematic Pre -Rig Schematic Proposed Schematic 17 -12A Permit to Drill Application Page 10 WELLHEAD = MCEVOY • �� SAFETY N. DMY GLV IN STA #3 HAS STRIPPED F.N. ACTUATOR = AXELSON KB. ELEV = 67' BF. ELEV = 1 2131' H3-1/2" CAMCO TRDP -2A -SSA SSSV NIP, ID = 2.81" KOP = 6150' Max Angle = 95 @ 10832' Datum MD = NA Datum TV D = 8800' SS 1 3133' - 3185' 1 — I SLICKSTICK PATCH, ID = 1.75" SET 06/15/04 GAS LIFT MANDRELS Iloo ST MD TVD DEV TYPE VLV LATCH PORT DATE 13 -3/8" CSG, 68 #, K -55/ L -80, ID = 12.415" I—I 3510' I 1 3163 3162 1 OTIS DMY T -2 0 08/24/03 2 5289 5288 1 OTIS DMY T -2 0 08/24/03 3 6915 6885 22 OTIS DMY BROKEN 0 02/05/03 4 7884 7731 36 OTIS DMY RM 0 02/05/03 Minimum ID = 1.750" @ 3133' 5 8008 7831 38 OTIS DMY RM 0 02/05/03 3 -1/2" ECLIPSE PATCH ** STA #1 & 2: DMY HAS EXTENDED AND OVERSIZED PACKING CHEMICAL MANDRELS ST MD WD DEV TYPE VLV LATCH PORT DATE C t 6 8124 7919 42 MMGM DMY RK 0 02/05/03 I TOP OF 7" LNR H 8268' 1--1 L — 5274' - 5314' H ECLIPSE PATCH, ID = 1.75" SET 02/03/04 I 19 -5/8" CSG, 47 #, L -80, ID = 8.681" H 8620' 1 ■ 9710' I -ITOP OF CEMENT - PKR SQZ - 04/27/00 I V4 — .t 10200' 1 FASDRILL PLUG 04/25/00 I 3 -1/2" TBG, 9.3 #, L-80, .1332 bpf, ID = 2.992" I — i 10208' �* • G E '10218' —13 -1/2" TIW OVERSHOT SEAL ASSY I TOP OF 4 -1/2" LNR 10208' � t. H 10228' H4 -1/2" X 3 -1/2" TM/ SS HORIZONTAL PKR I I I I ELMD TT NOT LOGGED I 14 -1/2" LNR, 12.6 #, L -80, .0152 bpf, ID = 3.958" H 10446' 1 1.111 1 10237' 1 PORTED JOINT (41.06') 1 I TOP OF 4-1/2" LNR - SLOTTED H 10446' I 1 7" LNR, 29 #, L -80, .0371 bpf, ID = 6.184" I-1 10487' I• ■ PERFORATION SUMMARY REF LOG: GR/CNP /DFSD ON 01/01/60 ANGLE AT TOP PERF: 81 @ 10060' Note: Refer to Production DB for historical perf data SIZE SPF INTERVAL Opn /Sqz DATE 2 -1/2" 6 10060 - 10080 0 09/23/00 2 -1/2" 6 10160 - 10180 0 09/23/00 SLTD LNR 10446 - 11300 0 02/15/92 I4 -1/2" SLTD LNR, 11.6 #, L -80, .0114 bpf, ID = 4.0" H 11274' I TOP OF 4 -1/2" LNR H 11274' 1 I PBTD I 10219' V&A I TD H 11300' I 000* MA tV 1 4 -1/2" LNR, 12.6 #, L -80, .0152 bpf, ID = 3.958" I-I 11300' 1 DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 02/15/92 ORIGINAL COMPLETION 02/06/05 CNJ/TLH PATCH CORRECT. (06/15/04) WELL: 15 -27 08/24/03 RWL /KK GLV C/O 05/29/06 DFR/DTM CSG CORRECTIONS (11/24/04) PERMIT No: 1920060 09/12/03 CMO/TLP DATUM MD & PERF ANGLE API No: 50- 029 - 22243 -00 10/21/03 MDC/TLP PULL TBG TAIL PLUG SEC 22, T11 N, R14E, 633.23' FEL & 1962.32' FNL 10/04/03 DAC/TLP STA #1 & 2 DMY EXTENDED BP Exploration (Alaska) 02/04/04 MJA/TLP ECLIPSE PATCHES /PULL PXB • IFS _ ACTUATOR = AXEL •SON 15-07 Pre-Rig SAFETY DMY C.V IN STA 53 HAS STRIPPED F.N. <B. ELEV = 67' 3F. ELEV = - <OP= 6150' I 2131' H3 -1/2" CAMCO TRDP -2A -SSA SSSV NIA, ID = 2.81" Vlex Angle = 95 © 10832 Q Datum MD = NA Datum TVD = 8800' SS I - u11 Tubing Patch H 3133' - 3185', , I 3133' - 3185 - -ISLICKS11CK PATCH, ID = 1.75" SET 08/15/04 GAS LIFT MANDRELS ST NO TVD DEV TYPE VLV LATCH PORT DATE 13 -3/8" CSG, 6811, K -55/ L -80, ID = 12.415" H 3510' I • 2 1 3163 3162 1 OTIS DV( T-2 0 5289 5288 1 OTIS DM' T -2 0 08/24/03 H 4010' J 3 6915 6885 22 OTIS DMY BROKEN 0 02/05/03 4 7884 7731 36 OTIS DMY RM 0 02/05/03 Minimum ID =1.760" @ 3133' ,., 5 8008 7831 38 OTIS DW RM 0 02/05103 3 -1/2" ECLIPSE PATCH I " STA /1 & 2: DMY HAS EXTENDED AND OVERSIZED PACKING „4 CHEMICAL MANDRELS ST MD TV D DEV TYPE VLV LATCH PORT DATE 6 8124 7919 42 MMGM DMY RK 0 02/05/03 ITOPOF7" LNR H 0260' — - — 5274' - 5314' H ECLIPSE PATCH, ID = 1.75" SET 02/03/04 I 1 9.5/8" CSG, 471, L - 60, 0- 8.881" H 8620' I I • 7o. 9710' I— TOP OF CEMENT - PKR SQZ - 04/27/00 I *4 • ∎ • f 10200' — SET FASDRILL PLUG 04/25/00 I 3 2 /2" TBG, 9.31, L -80, .1332 bpf, 0 = 2.992" H 10208' f /t � �� 10218' — 3 -1/2" TM/ OVERSHOT SEAL ASSY I Toe oF4.1/2"LNRH- -0200' ,� ,��.. 10228' H 4- 112" X 3-1/2"11W SS HORIZONTAL PKR I HELM() TT NOT LOGGED I 4-1/2" LNR, 12.6e, L -80, .0152 bpf, ID= 3.958" H 10445' I ••••• I 10237' H4 -1/2" PORTED JOINT (41.06') I I TOP OF 4-1/2" LNR- SLOTTED H 10446' I I I I 1 17" LNR, 291, L -80, .0371 bpf, ID = 6.184" H 10487' I— I I PERFORATION SUMMARY I 1 I I REF LOG: GR/CNP/DFSD ON 01/01/60 1 I ANGLE AT TOP PERF: 81 @ 10060' Note: Refer to Production DB for historical perf data I I SIZE SPF INTERVAL Opn/Sgz DATE 1 1 I I 2-1/2" 6 10060 - 10080 0 09/23/00 1 I 2-1/2" 6 10160 - 10180 0 09/23/00 I I SLTD LNR 10446 - 11300 0 02/15/92 I 1 I I I 1 I I I I I I I4 -1/2" SLTD LNR, 11.611, L -80, .0114 bpf, ID = 4.0" H 11274' I ITOP OF 4 -1/2" LNR —I 11274' I PBTD I 10219' 4.0444.1 I TD H j 11300' 1 :•Att•AV 14 -112" LNR, 12.61, L -80, .0152 bpf, ID = 3.958" H 11300' I DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 02/15/92 ORIGINAL COMPLETION 10104/03 DAC/TLP STA 81 & 2 OW EXTENDED WELL: 15-27 07/15/01 RN/TP CORRECTIONS 02/04104 MJA/TLP ECLIPSE PATCHES/PULL PXB PERMIT No: 1920060 11/06/02 /TP CMT TOP/PKR SQZ - 0427/00 02/06/05 CNJ/TLH PATCH CORRECT. (06/15/04) API No: 50- 029 - 22243 -00 08/24/03 RWL/KK GLV C/O 05/29/06 DFR/DTM CSG CORRECTIONS (11/24/04) SEC 22, TI 1 N, R14E, 633.23' FEL & 1962.32 FNL 09/12/03 CMO/TLP DATUM MD & PERF ANGLE BP Exploration (Alaska) 10/21/03 MDCJTLP PULL TBG TAIL PLUG 41,1 WELLHEAD = 15 -AA Proposed ACTUATOR = KB. ELEV = BF ELEV = SAFETY NOTES: KOP = 3810' Max Angle = — , ' I 2210' H4 -1/2" HES X NIP, ID = 3.01 1 Datum MD = Datum TVD = I 13 -3/8" CSG, 72#, L -80, ID = 12.347" H 3510' 4l 2 i I 3660' H9 -518" X 7" BKR ZXP LNR TOP PKR HGR I9 -5/8" BOT Whipstoc H 3810' 9 -5/8" EZSV Plug 3810' I3 -1/2" Tubing Stub I--I 4010' 1 ----..--- ' 1 11147' F-- 4-1/2" HES X NP, ID = 3.813" 4 — O�� X 11157' H BKR 5-3 L -80 PKR I • 19 -5/8" CSG, 471, L -80, ID = 8.881" I—{ 8620' IA , 1 I_ 11210' 1-14-1 /2" HES X I'P, ID = 3.813" I 7" LNR, 26 1, L -80, ID = 8.278 H 10487' I Ai i ■ r--I 11232' H4-1/7 HES XN NIP, ID = 3.725" I i I I I 4-1/2" LNR, 12.61, L -80, ID = 3.958" H 11300' � 11257' 14-12" WLEG, ID = 3.958" I 14-1 /2" TBG, 12.6#, 13Cr, .0152 bpf, ID = 3.958"1— 11257' 11257' 7" X 5" BKR ZXP LNR TOP PKR, HGR w /TIEBACK 11.15' X 5.25" I7" LNR 261, L -80, .0383 bpf, ID = 6.276" H 11407' I ■ PERFORATION SUMMARY I ANGLE AT TOP PERF: Note: Refer to Production 08 for historical perf data I SIZE SPF INTERVAL Opn/Sgz DATE PBTD 14705' I wiry 14-1/2" LNR, 12.6 #, L -80, .0152 bpf, ID = 3.958" H 14785' I .‘ .....S..4. 02115/92 ORIGINAL COMPLETION 10/04/03 DAC/TLP STA #1 & 2 DMY EXTENDED WELL: 15-27 07/15/01 RN/TP CORRECTIONS ' 02/04/04 MJA/TLP ECLIPSE PATCHES/PULL PXB FERMI Na: 1920060 11/06!02 1TP CMT TOP/PKR SQZ - 04/27/00 . 02/06/05 CNJ/TLH PATCH CORRECT. (06/15/04) API No: 50- 029 - 22243-00 08124/03 RWL/KK GLV CJO 05/29/06 DFR/DTM CSG CORRECTIONS (1124/04) SEC 22, T1114, R14E, 633.23' FEL & 1962.32' FNL 09/12103 CMO/TLP DATUM MD & PERF ANGLE 10/08/09 JEM Proposal BP Exploration (Alas ka) 1W21/03 _ MDC/TLP PULL TBG TAt PLUG • • by 0 DS15- 27APB1 (P1) Proposal Schlumberger Report Date: October 15, 2009 Survey 1 DLS Computation Method: Minimum Curvature / Lubinski Client: BP Exploration Alaska Vertical Section Azimuth: 349.050° Field: Prudhoe Bay Unit - EGA Vertical Section Origin: N 0.000 ft, E 0.000 ft Structure 1 Slot: DS -15 / 15 -27 dy T VD Reference Datum: Rotary Table S l tu Well: 15 -27 � ; � ; I 1 TVD Reference Elevation: 60.70 ft relative to MSL Borehole: Plan 15- 27APB1 a Sea Bed 1 Gr ound Level Elevation: 32.20 ft relative to MSL UWIIAPI #: 500292224370 a Magnetic Declination: 22.526° Survey Name 1 Date: 15- 27APB1 (P1) / October 15, 2009 Total Field Strength: 57677.066 nT Tort 1 AHD 1 001 1 ERD ratio: 173.300° / 6314.12 ft / 6.183 / 0.724 Magnetic Dip: 80.942° Grid Coordinate System: NAD27 Alaska State Planes, Zone 04, US Feet Declination Date: October 14, 2009 • Location Lat!Long: N 70.29947857, W 148.57478384 Magnetic Declination Model: BGGM 2009 Location Grid NIE YIX: N 5961157.180 ftUS, E 675967.790 ftUS North Reference: True North Grid Convergence Angle: +1.34182618° Total Corr Mag North •> True North: +22.526° Grid Scale Factor: 0.99993518 Local Coordinates Referenced To: Well Head Measured Azimuth Vertical NS EW Mag 1 Gray Directional Zone Of Zone Of Comments Depth Inclination True Sub-Sea TVD TVD Section True North True North Tool Face DLS Difficulty Exclusion Exclusion Northing Easting (ft ) (deg) (deg) (ft) (ft ) (ft ) (ft ) (ft) (deg) (deg1100ft ) Index (deg) Alert (ftUS) (ftUS) Tie -In Survey 3440.70 0.85 180.50 3379.47 3440.17 -24.43 -16.70 42.25 178.43M 0.00 2.52 9.85 Alert 5961141.47 676010.42 3500.00 0.79 178.43 3438.76 3499.46 -25.26 -17.55 42.26 178.29M 0.12 2.53 9.78 Alert 5961140.62 676010.45 13 -3/8" Csg 3503.70 0.78 178.29 3442.46 3503.16 -25.31 -17.60 42.26 176.70M 0.12 2.54 9.78 Alert 5961140.57 676010.45 SV3 3543.24 0.74 176.70 3482.00 3542.70 -25.83 -18.13 42.28 174.09M 0.12 2.54 9.73 Alert 5961140.05 676010.48 3600.00 0.68 174.09 3538.76 3599.46 -26.53 -18.83 42.34 168.26M 0.12 2.55 9.66 Alert 5961139.35 676010.56 3700.00 0.59 168.26 3638.75 3699.45 -27.64 -19.93 42.50 167.83M 0.12 2.57 9.55 Alert 5961138.26 676010.75 SV2 3706.25 0.58 167.83 3645.00 3705.70 -27.70 -19.99 42.52 160.22M 0.12 2.57 9.54 Alert 5961138.19 676010.76 3800.00 0.50 160.22 3738.74 3799.44 -28.58 -20.84 42.76 159.26M 0.12 2.58 9.43 Alert 5961137.35 676011.02 Top Whipstock 3810.00 0.49 159.26 3748.74 3809.44 -28.66 -20.92 42.79 159.26M 0.12 2.59 9.42 Alert 5961137.27 676011.05 Exclusion Exit Alert 3816.30 1.25 159.26 3755.05 3815.75 -28.76 -21.01 42.82 159.26M 12.00 2.64 10.00 Exit Alert 5961137.18 676011.09 Base Whipstock 3826.00 2.41 159.26 3764.74 3825.44 -29.06 -21.29 42.93 - -- 12.00 2.70 10.94 5961136.90 676011.2* Cry 4/100 3839.00 2.41 159.26 3777.73 3838.43 -29.60 -21.81 43.12 144.70M 0.00 2.71 10.94 5961136.39 676011.41 3862.74 1.60 144.70 3801.46 3862.16 -30.39 -22.54 43.49 80.13M 4.00 2.76 10.00 Enter Alert 5961135.66 676011.79 3900.00 1.05 80.13 3838.70 3899.40 -30.87 -22.91 44.13 18.78M 4.00 2.83 8.54 Alert 5961135.31 676012.44 3992.14 4.07 18.78 3930.75 3991.45 -28.05 -19.67 46.01 17.74M 4.00 2.99 5.00 Enter Fail 5961138.60 676014.25 4000.00 4.38 17.74 3938.59 3999.29 -27.54 -19.12 46.20 11.29M 4.00 3.00 4.71 Fail 5961139.15 676014.42 4100.00 8.32 11.29 4037.96 4098.66 -17.49 -8.38 48.78 7.07L 4.00 3.17 1.85 Fail 5961149.94 676016.75 SV1 4125.34 9.33 10.52 4063.00 4123.70 -13.89 -4.56 49.51 6.31L 4.00 3.21 1.93 Fail 5961153.78 676017.39 4200.00 12.30 8.98 4136.32 4197.02 -0.78 9.24 51.86 4.79L 4.00 3.34 4.08 Fail 5961167.63 676019.41 4225.13 13.30 8.62 4160.83 4221.53 4.46 14.74 52.71 4.44L 4.00 3.39 5.00 Exit Fail 5961173.15 676020.13 4300.00 16.29 7.79 4233.21 4293.91 22.53 33.67 55.42 3.64L 4.00 3.51 7.87 Alert 5961192.13 676022.40 WellDesign Ver SP 2.1 Bld( users) 15- 27 \15 -27 \Plan 15- 27APB1 \15- 27APB1 (P1) Generated 10/15/2009 8:51 AM Page 1 of 3 Measured Azimuth Vertical NS EW Mag 1 Gray Directional Zone Of Zone Of Comments Depth Inclination True Sub -Sea ND ND Section True North True North Tool Face DLS Difficulty Exclusion Exclusion Northing Easting (ft) (deg) (deg) (ft) (ft) (ft) (ft) (ft) (deg) (deg1100ft) Index (deg) Alert (ftUS) (ftUS) 4354.52 18.47 7.35 4285.24 4345.94 37.96 49.80 57.56 3.22L 4.00 3.60 10.00 Exit Alert 5961208.32 676024.17 4400.00 20.28 7.06 4328.14 4388.84 52.30 64.77 59.45 2.94L 4.00 3.67 11.79 5961223.32 676025.71 4500.00 24.28 6.56 4420.66 4481.36 88.40 102.41 63.93 2.48L 4.00 3.82 15.76 5961261.05 676029.30 4600.00 28.27 6.19 4510.31 4571.01 130.66 146.40 68.84 2.15L 4.00 3.96 19.74 5961305.14 676033.18 UG4 4647.78 30.18 6.05 4552.00 4612.70 152.96 169.60 71.33 2.03L 4.00 4.02 21.64 5961328.39 676035.12 4700.00 32.27 5.91 4596.65 4657.35 178.86 196.52 74.15 1.91L 4.00 4.09 23.72 5961355.37 676037.31 4800.00 36.27 5.69 4679.27 4739.97 232.77 252.53 79.83 1.72L 4.00 4.21 27.71 5961411.50 676041.68 4900.00 40.27 5.50 4757.77 4818.47 292.13 314.16 85.86 1.58L 4.00 4.32 31.70 5961473.24 676046.27 UG3 4979.54 43.45 5.37 4817.00 4877.70 343.04 366.99 90.89 1.48L 4.00 4.40 34.88 5961526.17 676050.05 5000.00 44.27 5.34 4831.76 4892.46 356.65 381.11 92.21 1.46L 4.00 4.42 35.70 5961540.32 676051.05 5100.00 48.27 5.21 4900.87 4961.57 426.02 453.04 98.85 1.37L 4.00 4.52 39.69 5961612.38 676056.0 5200.00 52.26 5.09 4964.78 5025.48 499.89 529.62 105.75 1.29L 4.00 4.60 43.69 5961689.09 676061.1 5300.00 56.26 4.98 5023.18 5083.88 577.91 610.46 112.86 1.23L 4.00 4.69 47.68 5961770.07 676066.32 5400.00 60.26 4.88 5075.77 5136.47 659.69 695.18 120.17 1.17L 4.00 4.77 51.68 5961854.93 676071.64 5500.00 64.26 4.79 5122.30 5183.00 744.85 783.35 127.62 1.13L 4.00 4.84 55.68 5961943.25 676077.03 End Cry 5513.47 64.80 4.78 5128.09 5188.79 756.55 795.47 128.64 - -- 4.00 4.85 56.21 5961955.39 676077.76 UG1 5804.49 64.80 4.78 5252.00 5312.70 1010.02 1057.88 150.57 - -- 0.00 4.98 56.22 5962218.22 676093.53 WS2 7255.98 64.80 4.78 5870.00 5930.70 2274.20 2366.67 259.94 - -- 0.00 5.36 56.22 5963529.13 676172.22 WS1 7725.71 64.80 4.78 6070.00 6130.70 2683.32 2790.22 295.34 -- 0.00 5.44 56.22 5963953.37 676197.69 CM3 8228.33 64.80 4.78 6284.00 6344.70 3121.08 3243.43 333.21 - -- 0.00 5.51 56.22 5964407.31 676224.94 CM2 9294.64 64.80 4.78 6738.00 6798.70 4049.79 4204.90 413.56 - -- 0.00 5.65 56.22 5965370.33 676282.75 Cry 4/100 9871.40 64.80 4.78 6983.57 7044.27 4552.13 4724.97 457.02 155.66R 0.00 5.71 56.22 5965891.24 676314.02 9900.00 63.76 5.30 6995.98 7056.68 4576.90 4750.63 459.28 155.43R 4.00 5.72 55.16 5965916.95 676315.68 10000.00 60.13 7.22 7043.00 7103.70 4661.18 4838.34 468.88 154.53R 4.00 5.75 51.44 5966004.85 676323.22 10100.00 56.54 9.28 7095.49 7156.19 4741.55 4922.56 481.06 153.44R 4.00 5.78 47.76 5966089.32 676333.42 10200.00 52.98 11.52 7153.19 7213.89 4817.62 5002.87 495.76 152.15R 4.00 5.80 44.13 5966169.96 676346.24 10300.00 49.47 13.98 7215.81 7276.51 4889.00 5078.90 512.92 150.61R 4.00 5.83 40.54 5966246.36 676361.61 10400.00 46.01 16.70 7283.05 7343.75 4955.36 5150.26 532.45 148.78R 4.00 5.86 37.02 5966318.16 676379.46 CM1 10455.15 44.14 18.34 7322.00 7382.70 4989.68 5187.50 544.20 147.62R 4.00 5.87 35.12 5966355.66 676390.30 10500.00 42.63 19.76 7354.59 7415.29 5016.36 5216.62 554.25 146.59R 4.00 5.88 33.60 5966385.00 676399.70 10600.00 39.34 23.24 7430.08 7490.78 5071.72 5277.64 578.21 143.96R 4.00 5.90 30.30 5966446.56 676422.23 10700.00 36.17 27.22 7509.14 7569.84 5121.16 5333.04 604.23 140.81R 4.00 5.92 27.17 5966502.55 676446.94 10800.00 33.16 31.85 7591.39 7652.09 5164.45 5382.53 632.17 137.01R 4.00 5.94 24.27 5966552.68 676473.71 10900.00 30.34 37.25 7676.43 7737.13 5201.37 5425.88 661.90 132.41R 4.00 5.96 21.70 5966596.71 676502.42 1 End Cry 10912.71 30.00 38.00 7687.42 7748.12 5205.59 5430.94 665.80 - -- 4.00 5.96 21.41 5966601.86 676506.20 THRZ 10929.54 30.00 38.00 7702.00 7762.70 5211.12 5437.58 670.98 -- 0.00 5.96 21.41 5966608.61 676511.22 15 -27A Tgt 1 HRZ 11042.71 30.00 38.00 7800.00 7860.70 5248.28 5482.16 705.82 - -- 0.00 5.97 21.41 5966654.00 676545.00 BHRZ 11140.85 30.00 38. 7885.00 7945.70 5280.51 5520.83 736.03 -- 0.00 5.97 21.41 5966693.36 676574.30 TPTR 11158.17 30.00 38.00 7900.00 7960.70 5286.19 5527.66 741.36 - -- 0.00 5.97 21.41 5966700.31 676579.47 WellDesign Ver SP 2.1 Bld( users) 15- 27 \15 -27 \Plan 15- 27APB1 \15- 27APB1 (P1) Generated 10/15/2009 8:51 AM Page 2 of 3 Measured Azimuth Vertical NS EW Mag 1 Gray Directional Zone Of Zone Of Comments Depth Inclination True Sub•Sea ND ND Section True North True North Tool Face DLS Difficulty Exclusion Exclusion Northing Easting (ft) ( deg) ( deg) (ft) _ (ft) (ft) (ft) (ft) ( deg) (deg1100 ft) Index ( deg) Alert (ftUS) (ftUS ) LCU /TJB 11270.18 30.00 38.00 7997.00 8057.70 5322.97 5571.79 775.84 -- 0.00 5.97 21.41 5966745.23 676612.90 TSAG 11407.58 30.00 38.00 8115.99 8176.69 5368.09 5625.92 818.14 - -- 0.00 5.98 21.41 5966800.34 676653.91 7" Csg 11407.59 30.00 38.00 8116.00 8176.70 5368.09 5625.93 818.14 - -- 0.00 5.98 21.41 5966800.35 676653.92 TSHU 11453.78 30.00 38.00 8156.00 8216.70 5383.26 5644.13 832.36 -- 0.00 5.98 21.41 5966818.87 676667.70 TSAD 11524.21 30.00 38.00 8217.00 8277.70 5406.39 5671.88 854.04 -- 0.00 5.98 21.41 5966847.12 676688. Bld 12/100 11632.71 30.00 38.00 8310.96 8371.66 5442.01 5714.63 887.44 HS 0.00 5.98 21.41 5966890.64 676721.11 TCGL 11676.71 35.28 38.00 8348.00 8408.70 5457.59 5733.32 902.05 HS 12.00 6.00 26.66 5966909.67 676735.28 11700.00 38.08 38.00 8366.68 8427.38 5466.73 5744.28 910.61 HS 12.00 6.02 29.44 5966920.83 676743.58 BCGL 11749.51 44.02 38.00 8404.00 8464.70 5488.07 5769.89 930.62 HS 12.00 6.04 35.37 5966946.89 676762.98 11800.00 50.08 38.00 8438.39 8499.09 5512.32 5799.00 953.36 HS 12.00 6.06 41.41 5966976.52 676785.0 23SB 11826.80 53.29 38.00 8455.00 8515.70 5526.13 5815.56 966.30 HS 12.00 6.07 44.62 5966993.39 676797.59 End Cry 11882.71 60.00 38.00 8485.72 8546.42 5556.78 5852.34 995.03 - -- 12.00 6.10 51.32 5967030.83 676825.45 22TS 11911.26 60.00 38.00 8500.00 8560.70 5573.02 5871.83 1010.26 -- 0.00 6.10 51.32 5967050.66 676840.21 Drp 12/100 11932.71 60.00 38.00 8510.72 8571.42 5585.22 5886.46 1021.69 170.00L 0.00 6.10 51.32 5967065.56 676851.30 12000.00 52.06 36.23 8548.30 8609.00 5622.45 5930.90 1055.37 169.01L 12.00 6.13 43.31 5967110.77 676883.93 21 TS 12009.17 50.98 35.96 8554.00 8614.70 5627.34 5936.70 1059.60 168.84L 12.00 6.13 42.22 5967116.67 676888.02 TZ1B 12072.56 43.53 33.83 8597.00 8657.70 5659.71 5974.83 1086.25 167.39L 12.00 6.15 34.70 5967155.41 676913.77 12100.00 40.33 32.72 8617.41 8678.11 5672.85 5990.15 1096.31 166.56L 12.00 6.16 31.46 5967170.96 676923.47 TDF 12120.11 37.98 31.80 8633.00 8693.70 5682.10 6000.89 1103.09 165.86L 12.00 6.17 29.09 -- 5967181.85 676929.99 TD 12153.51 34.11 30.06 8660.00 8720.70 5696.72 6017.74 1113.20 - -- 12.00 6.18 25.17 5967198.93 676939.70 Legal Description: Northing (Y) fftUS] Easting (X) fftUS] Surface : 4955 FSL 5222 FEL S22 T11N R14E UM 5961157.18 675967.79 BHL : 412 FSL 4096 FEL S10 711N R14E UM 5967198.93 676939.70 • WellDesign Ver SP 2.1 Bld( users) 15- 27 \15 -27 \Plan 15- 27APB1 \15- 27APB1 (P1) Generated 10/15/2009 8:51 AM Page 3 of 3 by 0 DS15 -27A (P2) Proposal Schlumberger Report Date: October 15, 2009 Survey 1 DLS Computation Method: Minimum Curvature / Lubinski Client: BP Exploration Alaska Vertical Section Azimuth: 349.050° Field: Prudhoe Bay Unit - EOA Vertical Section Origin: N 0.000 ft, E 0.000 ft Structure 1 Slot: DS- 15/15 -27 study TVD Reference Datum: Rotary Table Well: 15 -27 as b 1 l ity TVD Reference Elevation: 60.70 ft relative to MSL Borehole: Plan 15 -27A �� Sea Bed 1 Ground Level Elevation: 32.20 ft relative to MSL UWIIAPI#: 500292224301 Magnetic Declination: 22.524° Survey Name / Date: 15 -27A (P2) / October 15, 2009 Total Field Strength: 57677.137 nT Tort I AHD 1 DDI 1 ERD ratio: 256.125° / 8972.16 ft / 6.591 / 1.029 Magnetic Dip: 80.942° Grid Coordinate System: NAD27 Alaska State Planes, Zone 04, US Feet Declination Date: October 15, 2009 Location Lat/Long: N 70.29947857, W 148.57478384 Magnetic Declination Model: BGGM 2009 • Location Grid NIE YIX: N 5961157.180 ftUS, E 675967.790 ftUS North Reference: True North Grid Convergence Angle: +1.34182618° Total Corr Mag North -> True North: +22.524° Grid Scale Factor: 0.99993518 Local Coordinates Referenced To: Well Head Measured Azimuth Vertical NS EW Mag 1 Gray Directional Zone Of Zone Of Comments Inclination Sub-Sea TVD TVD DLS Northing Easting Depth True Section True North True North Tool Face Difficulty Exclusion Exclusion (ft) i (deg) I (deg) (ft ) (ft) (ft) (ft) (ft ) (deg) (deg /100ft ) Index (deg) Alert (ftUS) (ftUS) KOP Drp 10/100 11880.00 59.68 38.00 8484.36 8545.06 5555.24 5850.50 993.59 170.00R 12.00 6.09 50.99 5967028.95 676824.05 11900.00 57.71 38.41 8494.75 8555.45 5566.42 5863.93 1004.16 169.79R 10.00 6.10 49.05 5967042.62 676834.30 Cry 10/100 11941.00 53.67 39.31 8517.86 8578.56 5588.27 5890.29 1025.40 54.80L 10.00 6.12 45.07 5967069.48 676854.92 12000.00 57.21 33.58 8551.34 8612.04 5621.18 5929.38 1054.20 51.54L 10.00 6.14 48.36 5967109.22 676882.79 End Cry 12065.88 61.45 27.71 8584.95 8645.65 5663.56 5978.12 1083.00 -- 10.00 6.16 52.45 5967158.62 676910.44 Cry 4 10/100 12066.71 61.45 27.71 8585.35 8646.05 5664.13 5978.76 1083.34 10.19E 0.00 6.16 52 5 5967159.27 676910.76 12100.00 64.73 27.06 8600.42 8661.12 5687.41 6005.12 1096.99 9.89L 10.00 6.17 55.71 5967185.94 676923.79 12200.00 74.59 25.28 8635.14 8695.84 5762.11 6089.19 1138.25 9.27L 10.00 6.20 65.56 5967270.94 676963.07 12300.00 84.46 23.67 8653.29 8713.99 5842.15 6178.58 1178.92 8.98L 10.00 6.24 75.42 5967361.26 677001.64 Tgt 2 12356.05 90.00 22.80 8656.00 8716.70 5888.44 6230.00 1201.00 90.00L 10.00 6.26 80.96 5967413.18 677022.50 12400.00 90.00 18.40 8656.00 8716.70 5925.88 6271.13 1216.46 90.00L 10.00 6.27 80.98 5967454.66 677036.9 End Cry 12435.51 90.00 14.85 8656.00 8716.70 5957.35 6305.15 1226.62 - -- 10.00 6.28 81.04 5967488.90 677046.36 Cry 6/100 12933.22 90.00 14.85 8656.00 8716.70 6405.43 6786.22 1354.21 90.00L 0.00 6.33 81.04 5967972.80 677162.64 13000.00 90.00 10.85 8656.00 8716.70 6466.52 6851.32 1369.06 90.00L 6.00 6.34 81.15 5968038.22 677175.96 13100.00 90.00 4.85 8656.00 8716.70 6561.15 6950.34 1382.71 90.00L 6.00 6.37 81.39 5968137.53 677187.28 13200.00 90.00 358.85 8656.00 8716.70 6658.62 7050.24 1385.93 90.00L 6.00 6.39 81.73 5968237.47 677188.16 13300.00 90.00 352.85 8656.00 8716.70 6757.87 7149.93 1378.69 90.00L 6.00 6.41 82.15 5968336.96 677178.59 Tgt 3 13364.12 90.00 349.00 8656.00 8716.70 6821.94 7213.23 1368.58 90.00L 6.00 6.42 82.47 5968400.00 677167.00 13400.00 90.00 346.85 8656.00 8716.70 6857.82 7248.32 1361.07 90.00L 6.00 6.43 82.67 5968434.90 677158.67 13500.00 90.00 340.85 8656.00 8716.70 6957.36 7344.33 1333.26 90.00L 6.00 6.45 83.26 5968530.23 677128.63 13600.00 90.00 334.85 8656.00 8716.70 7055.41 7436.91 1295.57 90.00L 6.00 6.47 83.93 5968621.89 677088.78 WellDesign Ver SP 2.1 Bld( users) 15- 27 \15 -27 \Plan 15- 27A \15 -27A (P2) Generated 10/15/2009 9:31 AM Page 1 of 2 • Measured Azimuth Vertical NS EW Mag 1 Gray Directional Zone Of Zone Of Comments Depth Inclination True Sub -Sea TVD TVD Section True North True North Tool Face DLS Difficulty Exclusion Exclusion Northing Easting _ (ft) (deg) ( deg) (ft) (ft ) (ft) (ft) (ft) ( deg) ( deg /100 ft) Index ( deg) Alert (ftUS) (ftUS ) End Cry 13691.37 90.00 329.36 8656.00 8716.70 7142.78 7517.63 1252.84 - -- 6.00 6.49 84.60 5968701.58 677044.17 Cry 6/100 14224.55 90.00 329.36 8656.00 8716.70 7644.79 7976.39 981.15 90.00L 0.00 6.53 84.60 5969153.82 676761.83 Tgt 4 14297.29 90.00 325.00 8656.00 8716.70 7712.29 8037.51 941.73 90.00L 6.00 6.54 85.16 5969214.00 676721.00 14300.00 90.00 324.84 8656.00 8716.70 7714.76 8039.73 940.18 90.00L 6.00 6.55 85.18 5969216.18 676719.39 End Cry 14369.36 90.00 320.68 8656.00 8716.70 7776.93 8094.93 898.21 - -- 6.00 6.56 85.75 5969270.38 676676.15 TD 14785.48 90.00 320.68 8656.00 8716.70 8143.06 8416.83 634.51 2.29R 0.00 6.59 85.75 5969586.00 676405.00 Legal Description: Northing (Y) [ftUS] Easting (X) [ftUS] Surface : 4955 FSL 5222 FEL S22 T11N R14E UM 5961157.18 675967.79 Tgt 2 : 624 FSL 4008 FEL S10 T11N R14E UM 5967413.18 677022.50 Tgt 3 : 1608 FSL 3838 FEL S10 T11N R14E UM 5968400.00 677167.00 Tgt 4 : 2432 FSL 4263 FEL S10 T11N R14E UM 5969214.00 676721.00 • TD / BHL : 2811 FSL 4570 FEL S10 T11N R14E UM 5969586.00 676405.00 • WellDesign Ver SP 2.1 Bld( users) 15- 27 \15 -27 \Plan 15- 27A \15 -27A (P2) Generated 10/15/2009 9:31 AM Page 2 of 2 by - Schlumberger WELL DS15- 27APB1 (P1) / 15 -27A (P2) 1 FIELD Prudhoe Bay Unit - EOA I STRUCTURE DS -15 Magnetic Parameters Surface Location NV 327 Alaska State Planes. Zona 04, US Feel I Miscellaneous LAWN; 800M2009 Dip: 80.942' Dale: October 15, 2509 Let: N701758.423 Noting'' 5961157.18RUS God Cone +130182816' Sbt 15-27 ND Ref: Rotary Tatee(50.704 above MSL) Map Dec: +22524' FS: 57677.1 nT Lon W14834 29.222 EaS+g 675967.79800 Scala Fact. 09999351754 Plan: 15-274 (72) Srvy Date October 15.2009 5250 5500 5750 0 1200 2400 3600 5- 27APB1 (P1) 5-27 7" Csti _ -.. -. . ' .. .._.._..i..-..-..-..-..-..- ..- .._..�.._.._..- ..- ..- .. -.. -. Tie-In Survey w._.._.._.._.. - .. .. .. .._.._.._.. - .. y.. _.. .. .. - .. - .. - 6606 13a/e" csg 13 -3/8" csg • 3600 -"_.._.._.._.._...._.._.._.._.. ___.._.._._.._.._.._.._.._.._.._..-._.._.._.._.._.._.. _.._..�.._.._.._.._.._.._.. - ... 8250 8250 To Wh. stock - ..- .._.._.. -.. -.. .. .. @.._.P_ -..- . - .. - .._ .._.._.._..-..-.. �.-..-..-..-.._.._.. _..- ..- ..- ..- ..- ..- .._.._.._.., 0606.- ..- .. -.. -.. Base Whipstock Cry 41100 O - .. .. .. .. - .. - . . .. .. - .._ . . .. .. .. .. ...y._.._.._.._.. _.. _.. .. ..i.. - .. _.. _.. _.. .. ..._. -, LA �(•_••- •• -•• -• N Bid 121100 C - ..- ..- ..- . ... .._.._.._.. . .._.. _..- ..- ..- .._.._.. _.... - ..- ..- ..- ..- .. -..-. 4800 _ 0660..- .._.._.._.._. - .._.._.._.._.._.. 6066_.. .._.._.._.._..- ._.._.._..-.._.._.._.._.._._.._.._.._.._.._.. _.._.._.._.._.._.._.._.._.._.., `� 8500 0660 8500 ; 1 End Cry rn �._.._.._.._.._.._...� _.._.._.._ . _.._.._.. ... ._.._ a - .._.._.._.._.._.. ._.._.._.._.._.._.._. a _.._.._.._.._.._.._.._.._._.._.._.._.._.._.._ .._.._.._.._.._.._.._.._.._...� _ _ rvlal _.._.._.._. i 4 -- ..- ..- ..- ..- ..- .. -.._.. r.. -.. -.. _.. _.. O O End Cry N -. - .._.._.._.._.. _.. _.. -.. y.._.._ .._.._.._.._ 1st .._.._.._.._.._.._. .. _.._.._.._.._. 6066.. .. .._.._.._.._ 6066_.. _...._.._.._.. _.._.._.._..-.._.. _.._..y.._.._.......... ... (P1) 5-27A (P2) _ - _ - . - _ _ -. _ _ _ _ - 27 Pi) C 6000 t 3 8750 TD Tgt 2 8750 _.. _.._.._.._.. ._.._..- - - _.._.._.._ ._.._.._..- - ._.._.._...... _. _. ._.._.._.._...._.._.._.._...... - II CI) _.._.._.._.._.._.._ _.._.._.._.._.._.._.. -..- .-.._.._.. _.._.._.._.._.. .... ._.._.._.._.._ .6 660........- ..- .. _.._.._.._ to _..- .._.._........_ ._ _.._.._.._.._.._.._ 5250 5500 5750 Vertical Section (ft) Azim = 349.05 °, Scale = 1(in):250(ft) Origin = 0 N / -S, 0 E / -V • 7200 • 7200 _.._.._........- .._1._.._.._ _.._.._..e..-.._ .-..-..-..-..-..-..-..-..- a.-..-..-..- ..- ..- ..- ..- ..1..- ..- ..- .. -.. -. - ..- ..- ..i.._ .i ._. .._.._..- .i. _..- ..- ..- .._..- .. -.. -.. i.. -..- 6606.- ..- .. -.. -.. -..i.. -6606 Cry 41100 End Cry 15 -27A Tgt S HRZ _..- ..- ..- ..- .. -..- .- 6606.- .. -..- - ..- .. -..- .-..-..-..-..-..-..-..-...-..-..-..-..-.._..-..-.._..-. .- ..- ..- ..- ..- ..- ..- ..- .. -.. -.. t .- ..- .. -.. -.. • - 6606.- ..- .. -..- 6606.- �..- ..- ..- ..- ..- ..- ..- .._..�.. -6606. ▪ l, " e.s.na.,..,,., lles,e,s . mm.ell. 4mm ll lm..mm.11.11.lm.lm.,, . ., m ,mlama a aa ,.a .el, ,all.11.4l r,,l,a,.leol.rll.00 e.m m . IS 7 s 11m,.im.,,em lae e s,e mmlll. ssao Ml,a. .l ..,ii..11el.em,ioellell _..- ..- .._.._.. -. _ _..- .._.._.._.. -.._ - - 0660..- ..- ..- .. -.. -.. _. _.._.._.._..- 6606. -.. -. _ .._.._.._.._.._.._.._ -.. -6606 y .lg.._ _ O 666606..6- .... - .6. -.. .._ .._.._..- .. -..- - =.. =.. �..= ..= ..= .. =..= _ _.. - 606.. -• - _• •.,::::: Lr - .._.. -..- 6606.-.. - (6066 -..- 6606. - 6606._. _ ._..-}.-..-.._..- ..- ..- ..- .._..K.._..- ..- .. -..- 6606.- .._..r.._.._.._... 8400 _�..- ..- .._.._.. -6606 rte_ cNwtgS r,u e�acry : Cry .._.._ 8400 atst2a 6606 - - - _ := 1:.:7::CC_..- - - - - - - - - - - - - - - �.._.._.. -..- 660 __:: C::C::�.._.._.. 0 ^ -_ - - -::�.. __..__.. 0660.. _.. . -..- .rP 2) _.._.._..-..-..- ..- .- ..- .._.._.._.._..- .. -.. -. -6606_ -. :: i:_:::::_::_::_.::_::- :: -::- _ aa p nd - :. .- B1("1) ... 5- 274(72) 1 5 27 TD Tgt 2 r Csg 4 -112" Lnr End Cry Cry 6/100 Tgt 3 End Cry 0 1200 2400 3600 4800 6000 7200 8400 Vertical Section (ft) Azim = 349.05 °, Scale = 1(in):1200(ft) Origin = 0 N / -S, 0 E / -V by • • 10 Schlumberger WELL 1 FIELD STRUCTURE DS15- 27APB1 (P1) / 15 -27A (P2) Prudhoe Bay Unit - EOA DS-15 Magnets Parameters Surface Location 56027 Alaska State Planes. Zone 04, US Feet I Miuel0reoua Model. BOOM 2003 Dip'. 80.942' Date: October 15 2009 (at 570 17 56 123 Rortlug'. 5961157 18 RUS Grid Cone or. 34182610 SOt 15-21 ND Rat. Rotary Tatty (60.70R atone MOL) Map Doc: +22.524' FS'. 57677.1 nT Lon: W1403429.222 Easing. 675967 76 RUS Scale Fad'. 06999261754 Pb, . 15- 278(P2) Sny DM: October 15, 2003 800 1000 1200 0 1200 2400 15 -37A (P2) 15 -27A (R2) :End Cry 8400 i Tgt4 Cry 10/100 . Cry 6/100 ^ • • PB1 (P1) ^ 6000 TD 6000 A Z End Cry Cry 10/100 = End Cry Tgt 3 O KOP Drp 10/100 7200 N C_ • D . 12/100 11 5800 5800 Cry 6/100 t N End • ry End CCry U C 10 /100 Tgt 2 Civ 101100 cn KOR Drp 10 /100 1;2ZAPS ?..01) h 6000 V V V TD 7 Csg Bid 12/100 7" Csg End Cry 15 -27• Tgt 1 HRZ P : Drp 121100 5600 5600 End Cry End Cry Bli1 12/100 15 27AI 01 (1 - -•DrraHeO 4800 800 1000 1200 «< W Scale = 1(in):200(ft) E »> 0 N C II To > 3600 3600 a 4 -1fr Lnr 27 Cl) N CO v , ► V I —, . 7" csg - C ~ 4 aice•' 2400 2400 1200 q418t P 1200 nd Cry Cry 4/100 Base Whipstock 0 • 0 13:116' Csq Top Whipstock Tie-in Survey -1200 0 1200 2400 «< W Scale = 1(in):1200(ft) E »> BPPASSPORT • Anticollision Report Company: North America - ALASKA - BP Local Co- ordinate Reference: Well 15 -27 Project: Prudhoe Bay TVD Reference: 15 -27A plan @ 60.70ft (Nabors XES) Reference Site PB DS 15 MD Reference: 15 -27A plan @ 60.70ft (Nabors XES) Site Error: 0.00ft North Reference: True Reference Well: 15 -27 Survey Calculation Method: Minimum Curvature Weil Error: 0.00ft Output errors are at 1.00 sigma Reference Wellbore Plan 15 -27A Database: EDM .16 - Anc Prod - WH24P Reference Design: Plan #2 15 -27A Offset TVD Reference: Offset Datum Reference Plan #215 -27A Filter type: GLOBAL FILTER APPLIED: All wellpaths within 200'+ 100/1000 of refen Interpolation Method: MD Interval 5.00ft Error Model: ISCWSA Depth Range: 3,810.00 to 14,785.48ft Scan Method: Tray. Cylinder North Results Limited by: Maximum center - center distance of 1,675.70ft Error Surface: Elliptical Conic Survey Tool Program Date 10/15/2009 From To (ft) (ft). Survey (Wellbore) Tool Name Description 431.70 3,440.70 15 -27 Srvy 1 MWD (15 -27) MWD MWD - Standard 3,440.70 3,810.00 Plan #1 15- 27APB1 (Plan 15- 27APB1) MWD MWD - Standard 3,810.00 4,200.00 Plan #1 15- 27APB1 (Plan 15- 27APB1) GYD -GC -SS Gyrodata gyro single shots 4,200.00 11,600.00 Plan #1 15- 27APB1 (Plan 15- 27APB1) MWD +IFR +MS MWD + IFR + Multi Station 11,600.00 11,880.00 Plan #1 15- 27APB1 (Plan 15- 27APB1) MWD +IFR +MS MWD + IFR + Multi Station 11,880.00 12,100.00 Plan #2 15-27A (Plan 15 -27A) MWD MWD - Standard 11,880.00 14,785.48 Plan #2 15-27A (Plan 15 -27A) MWD +IFR +MS MWD + IFR + Multi Station 10/15/2009 9 :20 :11AM Page 2 of 5 COMPASS 2003.16 Build 71 0 BPPASSPORT • Anticollision Report Company: North America - ALASKA - BP Local Co- ordinate Reference: Well 15 Project: Prudhoe Bay TVD Reference: 15 -27A plan @ 60.70ft (Nabors XES) Reference Site: PB DS 15 MD Reference: 15 -27A plan @ 60.70ft (Nabors XES) Site Error: 0.00ft North Reference: True Reference Well: 15 - 27 Survey Calculation Method: Minimum Curvature Well Error: 0.00ft Output errors are at 1.00 sigma I Reference Wellbore Plan 15 - 27A Database: EDM .16 - Anc Prod - WH24P Reference Design: PIan #2 15 - 27A 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 PIan Offset Well - Welibore - Design (ft) (ft) (t) (ft) PB DS 15 15-06 - 15 -06 - 15 -06 4,159.31 4,310.00 324.13 87.57 237.87 Pass - Major Risk 15-06A - 15 -06A - 15 -06A 4,159.31 4,310.00 324.13 87.57 237.87 Pass - Major Risk 15- 06APB1 - 15- 06APB1 - 15-06APB1 4,159.31 4,310.00 324.13 87.57 237.87 Pass - Major Risk 15-16 - 15 -16 - 15 -16 4,000.00 4,085.00 308.76 45.44 263.33 Pass - Major Risk 15-16 - 15 -16A - 15 -16A 4,000.00 4,085.00 308.76 45.44 263.33 Pass - Major Risk 15-16 - Plan 15-16B - Plan #1 15-16B 4,000.00 4,075.00 308.77 45.41 263.37 Pass - Major Risk 15-16 - Plan 15- 16BPB1 - Plan #1 15- 16BPB1 4,000.00 4,075.00 308.77 45.41 263.37 Pass - Major Risk 15-17 - 15 -17 - 15 -17 3,885.03 3,960.00 122.75 55.61 67.18 Pass - Major Risk 15-18 - 15 -18 - 15 -18 3,810.00 4,380.00 1,456.75 117.58 1,404.11 Pass - Major Risk 15-18 - 15 -18A - 15 -18A 3,810.00 4,380.00 1,456.75 117.35 1,404.10 Pass - Major Risk 15-19 - 15 -19 - 15-19 3,900.00 3,905.00 167.82 45.94 122.03 Pass - Major Risk 15-19 - 15 -19A - 15 -19A 3,900.00 3,905.00 167.82 45.94 122.03 Pass - Major Risk 15-21 - 15 -21 - 15 -21 Out of range 15-21A - 15 -21A - 15 -21A Out of range 15-22 - 15 -22 - 15 -22 Out of range 15-27 - 15 -27 - 15 -27 3,813.70 3,820.00 0.02 5.25 -4.92 FAIL - Major Risk 15-27 - Plan 15- 27APB1 - PIan #1 15- 27APB1 12,029.66 12,030.00 1.70 6.42 -4.61 FAIL - Major Risk 15 -28 - 15 -28 - 15 -28 9,632.21 8,560.00 1,212.37 212.29 1,000.64 Pass - Major Risk 15-28 - 15 -28A - 15-28A 11,775.00 12,267.00 451.57 228.91 237.07 Pass - Major Risk 15-28 - 15 -28A - PIan #4 9,632.21 8,560.00 1,212.37 212.29 1,000.64 Pass - Major Risk 15-29 - 15 -29 - 15-29 9,928.64 8,585.00 1,086.26 222.19 871.51 Pass - Major Risk 15-29 - 15 -29A - 15 -29A 14,203.22 12,900.00 600.48 281.62 335.68 Pass - Major Risk 15-29 - 15- 29APB1 - 15- 29APB1 14,479.97 12,360.00 1,109.55 262.11 859.56 Pass - Major Risk 15-29 - 15 -29B - 15 -29B 7,845.12 6,285.00 1,482.47 212.39 1,350.51 Pass - Major Risk 15-29 - 15- 29BPB1 - 15- 29BPB1 8,019.84 6,465.00 1,431.72 509.31 1,160.75 Pass - Major Risk 15-33 - 15-33 - 15 -33 3,810.00 3,900.00 391.85 60.75 333.27 Pass - Major Risk 15-33 - 15 -33A - 15 -33A 3,810.00 3,900.00 391.85 60.75 333.27 Pass - Major Risk 15-33 - 15 -33B - 15 -33B 3,810.00 3,900.00 391.85 60.75 333.27 Pass - Major Risk 15-33 - 15 -33B - Plan #2 3,810.00 3,900.00 391.85 60.75 333.27 Pass - Major Risk 15-33 - 15 -33PB1 - 15-33PB1 3,810.00 3,900.00 392.64 60.74 334.07 Pass - Major Risk 15-33 - 15 -33PB2 - 15 -33PB2 3,810.00 3,900.00 392.64 60.74 334.07 Pass - Major Risk 15-41 - 15-41 - 15 -41 7,653.11 7,615.00 496.14 258.11 272.21 Pass - Major Risk 15-41 - 15-41A - 15-41A ' 7,653.11 7,615.00 496.14 258.08 272.22 Pass - Major Risk 15-41 -15-41B-15-41B 7,653.11 7,615.00 496.14 257.81 272.38 Pass - Major Risk 15-41 - 15- 41BPB1 - 15- 41BPB1 7,653.11 7,615.00 496.14 257.72 272.44 Pass - Major Risk 15-41 - PIan 15-41C - PIan #1 15-41C 13,307.64 13,170.00 0.71 537.54 - 535.93 FAIL - Major Risk 15-43 - 15-43 - 15-43 3,920.11 3,945.00 286.82 39.79 247.75 Pass - Major Risk 15-44 - 15 -44 - 15-44 6,807.14 6,130.00 1,192.48 159.62 1,049.76 Pass - Major Risk 15-45 - 15-45 - 15-45 6,509.86 5,955.00 1,082.21 154.71 942.86 Pass - Major Risk 15-45 - 15-45A - 15-45A 6,509.86 5,955.00 1,082.21 154.71 942.86 Pass - Major Risk 15-45 - 15-45A - PIan #10 6,509.86 5,955.00 1,082.21 154.71 942.86 Pass - Major Risk 15-45 - 15- 45APB1 - 15- 45APB1 6,509.86 5,955.00 1,082.21 154.71 942.86 Pass - Major Risk 15-45 - 15- 45APB2 - 15- 45APB2 6,509.86 5,955.00 1,082.21 154.71 942.86 Pass - Major Risk 15-45 - 15-45B - 15-45B 6,509.86 5,955.00 1,082.21 153.81 943.45 Pass - Major Risk 15-45 - 15- 45BPB1 - 15- 45BPB1 6,509.86 5,955.00 1,082.21 153.98 943.28 Pass - Major Risk 15-45 - 15 -45PB1 - 15 -45PB1 6,509.86 5,955.00 1,082.21 154.71 942.86 Pass - Major Risk 15-46 - 15 -46 - 15 -46 6,548.09 5,775.00 1,675.52 176.41 1,540.62 Pass - Major Risk 15-46 - 15 -46L1 - 15 -46L1 6,548.09 5,775.00 1,675.52 175.84 1,540.88 Pass - Major Risk 15-46 - 15 -46L1 PB1 - 15 -46L1 PB1 6,548.09 5,775.00 1,675.52 175.84 1,540.88 Pass - Major Risk 15-49 - 15-49 - 15-49 3,827.82 3,920.00 841.25 68.62 792.70 Pass - Major Risk 15-49 - 15-49A - 15-49A 3,827.82 3,920.00 841.25 68.62 792.70 Pass - Major Risk 15-49 - 15- 49APB1 - 15- 49APB1 3,827.82 3,920.00 841.25 68.62 792.70 Pass - Major Risk 15-49 - 15-49B - 15 -49B 3,827.82 3,920.00 841.25 68.76 792.83 Pass - Major Risk 10/15/2009 9:20:11AM Page 3 of 5 COMPASS 200316 Build 71 BPPASSPORT Anticollision Report Company: North America - ALASKA - BP Local Co- ordinate Reference: Well 15 -27 Project: Prudhoe Bay TVD Reference: 15 -27A plan @ 60.70ft (Nabors XES) Reference Site: PB DS 15 MD Reference: 15 -27A plan @ 60.70ft (Nabors XES) Site Error: 0.00ft North Reference: True Reference Well: 15 -27 Survey Calculation Method: Minimum Curvature Well Error 0.00ft Output errors are at 1.00 sigma Reference Wellbore Plan 15 -27A Database: EDM .16 - Anc Prod - WH24P Reference Design: Plan #2 15-27A 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 - Wellbore - Design (ft) (ft) (ft) (ft) PB DS 15 15-49 - 15 -49PB1 - 15 -49PB1 3,827.82 3,920.00 841.25 68.62 792.70 Pass - Major Risk I I 10/15/2009 9:20:11AM Page 4 of 5 COMPASS 200316 Build 71 Alaska Department of Natural sources Land Administration System Page 1 of // Alaska Mapper Land Records /Status Plats Recorder's Search State Cabins Natural Resources Alaska DNR Case Summary File Type: ADL File Number: 28306 Printable Case File Summary See Township, Range, Section and Acreage? �� ( New Search Yes `_) No LAS Menu 1 Case Abstract 1 Case Detail 1 Land Abstract File: ADL 28306 Search for Status Plat Updates As of 02/25/2010 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: 2560.000 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: 014E Section: 15 Section Acres: 640 Search Plats Meridian: U Township: 011N Range: 014E Section: 16 Section Acres: 640 Meridian: U Township: O11N Range: 014E Section: 21 Section Acres: 640 Meridian: U Township: 011N Range: 014E Section: 22 Section Acres: 640 Legal Description 05 -28 -1965 ** *SALE NOTICE LEGAL DESCRIPTION * ** C14-127 11N 14E UM 15,16,21,22 2560.00 U- 3- 7 End of Case Summary Last updated on 02/25/2010. http: / /dnr.alaska.gov /prof ects /las /Case_Summary.cfm ?FileType= ADL &FileNumber = 2830... 2/25/2010 Alaska Department of Naturasources Land Administration System S Page 1 of/ Alaska Mapper Land Records /Status Plats Recorder's Search State Cabins Natural Resources Alaska DNR Case Summary File Type: ADL File Number: 28303 Printable Case File Summary See Township, Range, Section and Acreage? O Yes 0 No New Search LAS Menu 1 Case Abstract 1 Case Detail 1 Land Abstract File: ADL 28303 ''iaP_ Search for Status Plat Updates As of 02/25/2010 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: 2560.000 Date Initiated: 05/28/1965 Office of Primary Responsibility: DOG DIV OIL AND GAS Last Transaction Date: 12/04/2006 Case Subtype: NS NORTH SLOPE Last Transaction: AA -NRB ASSIGNMENT APPROVED Meridian: U Township: 011N Range: 014E Section: 03 Section Acres: 640 Search Plats Meridian: U Township: 011N Range: 014E Section: 04 Section Acres: 640 Meridian: U Township: O11N Range: 014E Section: 09 Section Acres: 640 Meridian: U Township: 011N Range: 014E Section: 10 Section Acres: 640 Legal Description 05 -28 -1965 * ** SALE NOTICE LEGAL DESCRIPTION * ** C14-124 11 N 14E UM 3, 4, 9,10 2560.00 U- 3- 7 End of Case Summary Last updated on 02/25/2010. http: / /dnr.alaska.gov /projects /las /Case_Summary.cfm ?FileType= ADL &FileNumber = 2830... 2/25/2010 • • TRANSMITTAL LETTER CHECKLIST WELL NAME �.�d /5 94 • PTD# a/ Development Service Exploratory Stratigraphic Test Non - Conventional Well FIELD: " " 2'1 Y' POOL: • 7,, 400 74Y Oi4 Circle Appropriate Letter / Paragraphs to be Included in Transmittal Letter CHECK ADD -ONS WHAT (OPTIONS) TEXT FOR APPROVAL LETTER APPLIES MULTI LATERAL The permit is for a new wellbore segment of existing well , Permit No. (If last two digits in API No. . Production / injection should API number are continue to be reported as a function of the original API number between 60 -69) stated above. PILOT HOLE In accordance with 20 AAC 25.005(0, all records, data and logs acquired for the pilot hole must be clearly differentiated in both well name ( 15 PH) and API number (50- o21- 1ZZ 4 1 3 - 7O) from records, data and logs acquired for well 15 — 2 -7A 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. Should conventional core be acquired in this well, representative chip samples from each foot of core must be submitted to the Commission in accordance with 20 AAC 25.071. 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: 2/1/2010 , .I. Field & Pool PRUDHO BAY, PRUDHOE OIL - 640150 ' . s Well ;."N � ... ., Wll N —___ _ _ - _ - - -_ -- _ PRUDHOE BAY UNIT 15 -27A Program DEV Well bore seg LI PTD #:2100230 Company BP EXPLORATION (ALASKA) INC Initial Class /Type DEV / PEND GeoArea 890 Unit 11650 On /Off Shore On Annular Disposal ❑ Administration 1 Permit fee attached NA 2 Lease number appropriate Yes 3 Unique well name and number Yes 4 Well located in a defined pool Yes 5 Well located proper distance from drilling unit boundary Yes 6 Well located proper distance from other wells Yes 7 Sufficient acreage available in drilling unit Yes 2560 acres. 8 If deviated, is welibore plat included Yes 9 Operator only affected party Yes 1 10 Operator has appropriate bond in force Yes Blanket Bond # 6194193. 11 Permit can be issued without conservation order Yes Appr Date 12 Permit can be issued without administrative approval Yes ACS 2/25/2010 13 Can permit be approved before 15 -day wait Yes 14 Well located within area and strata authorized by Injection Order # (put IO# in comments) (For NA • 1 All wells within 1/4 mile area of review identified (For service well only) NA 1 16 Pre - produced injector: duration of pre - production less than 3 months (For service well only) NA 1 Nonconven. gas conforms to AS31.05.030(y1.A),(j,2.A -D) NA 18 Conductor string provided NA Conductor set in 15 -27 Engineering 19 Surface casing protects all known USDWs NA Surface casing set in 15 -27 1 20 CMT vol adequate to circulate on conductor & surf csg NA Surface casing cemented 21 CMT vol adequate to tie -in long string to surf csg NA Production casing set.... PC leaks exist. ( Intermediate casing to be set above leak point 22 CMT will cover all known productive horizons Yes Cemented and perfed production liner planned 123 Casing designs adequate for C, T, B & permafrost Yes 24 Adequate tankage or reserve pit Yes Rig equipped with Steel pits. All waste to approved disposal wells. - - 125 If a re- drill, has a 10 -403 for abandonment been approved Yes 310 -057 1 26 Adequate welibore separation proposed Yes Proximity analysis performed. 15 -05A fails major risk. 27 If diverter required, does it meet regulations NA Wellhead already in place. BOP installed. Appr Date 28 Drilling fluid program schematic & equip list adequate Yes Max fm pressure = 4170 psi (10.2 ppg EMW) in Put River. Intermediate will drill with 10.4 ppg mud. GLS 2/26/2010 29 BOPEs, do they meet regulation Yes (Ivishak pressure expected to be 7.1 ppg EMW) 1 30 BOPE press rating appropriate; test to (put psig in comments) Yes MASP= 3380 psi Will test BOP to 3500 psi • 131 Choke manifold complies w /API RP -53 (May 84) Yes 132 Work will occur without operation shutdown Yes - 33 Is presence of H2S gas probable Yes H2S on DS 15. Rig has sensors and alarms. 1 34 Mechanical condition of wells within AOR verified (For service well only) NA 135 Permit can be issued w/o hydrogen sulfide measures No Max level H2S on Pad was 40ppm on well 15 -20C (7/1/06). Geology 1 36 Data presented on potential overpressure zones NA Appr Date 37 Seismic analysis of shallow gas zones NA ACS 2/25/2010 38 Seabed condition survey (if off - shore) NA 1 39 Contact name /phone for weekly progress reports [exploratory only] NA Geologic Engineering - ublic Commissioner: Date: Commissioner: Date ' . �'j'j.ssioner Date lo-
