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211-055
Nolan Vlahovich Hilcorp Alaska, LLC Geotech 3800 Centerpoint Drive, Suite 1400 Anchorage, AK 99503 Tele: (907) 564-4558 E-mail: nolan.vlahovich@hilcorp.com Please acknowledge receipt by signing and returning one copy of this transmittal. Received By: Date: Date: 10/17/2023 To: Alaska Oil & Gas Conservation Commission Natural Resource Technician 333 W 7th Ave Suite 100 Anchorage, AK 99501 SFTP DATA TRANSMITTAL T#20231017 Well API #PTD #Log Date Log Company Log Type AOGCC Eset# BRU 212-26 50283201820000 220058 9/2/2023 AK E-LINE Perf KBU 14-6Y 50133205720000 207149 9/18/2023 AK E-LINE GPT/Plug KBU 23-05 50133206300000 214061 9/9/2023 AK E-LINE GPT/Perf MP S-21 50029230650000 202009 10/7/2023 READ CaliperSurvey MPU C-23 50029226430000 196016 9/21/2023 AK E-LINE Perf MPU M-22 50029236450000 219111 9/20/2023 AK E-LINE Mechanical Cutter Paxton 7 50133206430000 214130 9/8/2023 AK E-LINE Tubing Punch/RCT PBU 06-16B 50029204600200 223072 10/7/2023 HALLIBURTON RBT PBU D-18B 50029206940200 215001 9/14/2023 BAKER RPM PBU J-19 50029216290000 186135 9/26/2023 AK E-LINE TTBP/Cement PBU J-23A 50029217120100 204193 10/4/2023 BAKER SPN PBU N-18A 50029209060100 208175 9/4/2023 BAKER SPN PBU P1-02A 50029217790100 202065 9/11/2023 BAKER SPN PBU P1-13 50029223720000 193074 9/15/2023 HALLIBURTON IPROF PBU R-12A 50029209210100 211055 9/7/2023 BAKER SPN Please include current contact information if different from above. T38062 T38063 T38065 T38064 T38066 T38067 T38068 T38069 T38072 T38073 T38074 T38075 T38076 10/20/2023 T38070 T38071 PBU R-12A 50029209210100 211055 9/7/2023 BAKER SPN Kayla Junke Digitally signed by Kayla Junke Date: 2023.10.20 08:34:04 -08'00' 7. Property Designation (Lease Number): 1. Operations Performed: 2. Operator Name: 3. Address: 4. Well Class Before Work:5. Permit to Drill Number: 6. API Number: 8. Well Name and Number: 9. Logs (List logs and submit electronic data per 20AAC25.071): 10. Field/Pool(s): Susp Well Insp Install Whipstock Mod Artificial Lift Perforate New Pool Perforate Plug Perforations Coiled Tubing Ops Other Stimulate Fracture Stimulate Alter Casing Pull Tubing Repair Well Other: Change Approved Program Operations shutdown 11. Present Well Condition Summary: Casing Length Size MD TVD Burst Collapse Exploratory Stratigraphic Development Service 14. Attachments (required per 20 AAC 25.070, 25.071, & 25.283) 16. Well Status after work: 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. OIL GAS WINJ WAG GINJ WDSPL GSTOR Suspended SPLUG Authorized Name and Digital Signature with Date: Authorized Title: Contact Name: Contact Email: Contact Phone: PBU R-12A Hilcorp North Slope, LLC 3800 Centerpoint Dr, Suite 1400, Anchorage, AK 99503 211-055 50-029-20921-01-00 11440 Conductor Surface Intermediate Production Liner 9075 80 2657 6486 10417 1189 10770 20" x 30" 13-3/8" 9-5/8" 7" 4-1/2" 8759 32 - 112 31 - 2688 29 - 6515 27 - 10444 10249 - 11438 32 - 112 31 - 2687 29 - 5559 27 - 8508 8327 - 9074 Unknown 2670 4760 5410 7500 10770, 10796 5380 6870 7240 8430 10735 - 11330 4-1/2" 12.6# 13cr85 25 - 10254 8739 - 9021 Structural 4-1/2" HES TNT Perm Packer 10131, 8217 10131 8217 Torin Roschinger Operations Manager Josh Stephens josh.stephens@hilcorp.com (907) 777-8420 PRUDHOE BAY, PRUDHOE OIL Total Depth Effective Depth measured true vertical feet feet feet feet measured true vertical measured measured feet feet feet feet measured true vertical Plugs Junk Packer Measured depth True Vertical depth feet feet Perforation depth Tubing (size, grade, measured and true vertical depth) Packers and SSSV (type, measured and true vertical depth) 12. Stimulation or cement squeeze summary: Intervals treated (measured): Treatment descriptions including volumes used and final pressure: 13a.Representative Daily Average Production or Injection Data Oil -Bbl Gas-Mcf Water -Bbl Casing Pressure Tubing Pressure Prior to well operation: Subsequent to operation: 15. Well Class after work: Exploratory Development Service StratigraphicDaily Report of Well Operations Copies of Logs and Surveys Run Electronic Fracture Stimulation Data Sundry Number or N/A if C.O. Exempt: ADL 0028279, 0028282 25 - 8331 N/A N/A 92 Well Not Online 7121 3198 1228 1150 237 0 N/A 13b. Pools active after work:PRUDHOE OIL No SSSV Installed STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS Sr Pet Eng: Sr Pet Geo: Form 10-404 Revised 10/2022 Submit in PDF format to aogcc.permitting@alaska.gov Sr Res Eng: Due Within 30 days of Operations By Grace Christianson at 10:31 am, Oct 11, 2023 Digitally signed by Torin Roschinger (4662) DN: cn=Torin Roschinger (4662), ou=Users Date: 2023.10.11 04:51:49 -08'00' Torin Roschinger (4662) RBDMS JSB 101223 WCB 3-14-2024 DSR-10/13/23 ACTIVITY DATE SUMMARY 9/29/2023 *****WELL S/I ON ARRIVAL**** DRIFTED WITH 10' x 2-7/8" DUMMY GUN, 3.70" CENT, 2-1/2" SAMPLE BAILER TO 10,771' SLM ****WELL LEFT S/I ON DEPARTURE, PAD-OP NOTIFIED OF STATUS**** 10/8/2023 *** WELL S/I ON ARRIVAL*** OBJECTIVE: SET NS CIBP 3.5'' PLUG AND PERFORATE INTERVAL W/2 7/8'' GEO RAZOR GUN 6 spf 60 DEG PHASE MIRU YELLOW JACKET E-LINE. PT PCE 250 PSI LOW./3500 PSI HIGH CORRELATE TO SLB PDC DATED 28SEP11 RIH W/CH/2.75'' GUN GAMMA/10' OF 2 7/8'' GEO RAZOR GUN T-SET #10 SETTING TOOL TO SET NORTHERN SOLUTIONS 4.5" CIBP AT 10770' ELM, CCL TO MID ELEMENT=24.3' CCL STOP DEPTH=10745.7' PERFORATE INTERVAL 10743'-10753' (10735'-10745' REFERENCE DEPTHS) CCL TO TOP SHOT= 7' CCL STOP DEPTH=10736' RDMO YELLOW JACKET ELINE ***WELL S/I ON DEPARTURE *** Daily Report of Well Operations PBU R-12A PERFORATE INTERVAL (10735'-10745' REFERENCE DEPTHS SET NORTHERN SOLUTIONS 4.5" CIBP AT 10770' ELM STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS 1. Operations Performed Abandon ❑ Plug Perforations 0 Fracture Stimulate ❑ Pull Tubing ❑ Oper�yhlpr%r% Suspend ❑ Perforate ® Other Stimulate ❑ Alter Casing El Ch. ro ❑❑ Plug for Reddll ❑ Perforate New Pool ❑ Repair Well ❑ Re-enter Susp Well ❑ Other: Pull Patch 2. Operator Name: BP Exploration (Alaska), Inc 4. Well Class Before Work Development 21 Exploratory C]AK 5. Permit to Drill Number: 211-055 3. Address P.O. Box 196612 Anchorage, 99519-6612 Stratigraphic ❑ Service ❑ 6' API Number: 50-029-20921-01-00 7 Property Designation (Lease Number): ADL 028279 & 028282 8. Well Name and Number: PBU R -12A 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 11440 feet Plugs measured 10796 feet true vertical 9075 feet Junk measured Unknown feet Effective Depth: measured 10796 feet Packer measured 10131 feet true vertical 8773 feet Packer true vertical 8217 feet Casing: Length: Size: MD: TVD: Burst: Collapse: Structural Conductor 80 20" x 30" 32-112 32-112 Surface 2657 13-3/8" 31-2688 31-2687 5380 2670 Intermediate 6486 9-5/8" 29-6515 29-5559 6870 4760 Intermediate 10417 7' 27-10444 27-8508 7240 5410 Liner 1189 4-1/2" 10249 - 11438 8327-9074 Perforation Depth: Measured depth: 10780 - 11330 feet True vertical depth: 8765-9021 feet Tubing (size, grade, measured and true vertical depth) 4-1/2" 12.6# 13Cr85 25-10254 25-8331 Packers and SSSV (type, measured and 4-112" HES TNT Perm Packer 10131 8217 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 Pnortowell operation: 23 299 3108 1816 210 Subsequent to operation: 356 1875 2885 1236 221 14.Attachments: (regW.d per20PAC 25.070.25.071,&25,283) 15. Well Class after work: Daily Report of Well Operations EI Exploratory ❑ Development El Service ❑ Stratigraphic ❑ Copies of Logs and Surveys Run ❑ 16. Well Status after work: Oil R1 Gas ❑ WDSPL ❑ Printed and Electronic Fracture Stimulation Data ❑ I GSTOR ❑ WINJ ❑ WAG ❑ GINJ ❑ SUSP ❑ SPLUG ❑ 17. 1 hereby certify that the foregoing is true and correct to the best of my knowledge. Sundry Number or N/A if C.O. Exempt: WA Authorized Name: Infanti, Samuel Contact Name: Infanti, Samuel Authorized Title: Pe Ieum Engineer Challenger Contact Email: samuel.infantil abp.com ^^ Authorized Signature: Date: I P� 1- rr 0.O Iq Contact Phone: +1 9075645676 Form 10-404 Revised 04/2017 Allf/�lf AV.,&VA*W9 ?RDMSI{Fiv unu 9 c on,o Submit Original 0n1v Daily Report of Well Operations PBU R-1 2A ACTIVITYnATF Q 1\fiMnov ***WELL S/I ON ARRIVAL***(PROFILE MOD) DRIFT W/ 20'x 3.70" DUMMY WHIP STOCK & LIB TO TOP OF PATCH AT 10,769' SLM (10,790' MD). ATTEMPT TO PULL TOP SECTION OF 45 KB PATCH FROM 10,768' SLM (1 hr of jar time). 11/13/2018 ***JOB CONTINUED ON 13-NOV-2018*** ***JOB CONTINUED FROM 13-NOV-2018*** (PROFILE MODIFICATION) ATTEMPT TO PULL TOP SECTION OF 45KB PATCH FROM 10,767' SLM (10,790' MD) FOR 1.25 hr's BEFORE COMING FREE. MOVE PATCH UPHOLE TO 10,230' SLM (xn area) AND JAR FOR AN ADDITIONAL 5hrs. 11/14/2018 ***JOB CONTINUED ON 15-NOV-2018*** ***JOB CONTINUED FROM 14-NOV-2018*** (PROFILE MODIFICATION) PULL TOP SECTION OF PATCH FROM 10,230' SLM (stuck near xn nipple) AFTER 2 HRS OF JARRING. PULL MIDDLE SECTION OF PATCH FROM 10,783' SLM. IN HOLE LATCHED TO LOWER SECTION OF PATCH AT 10,796' SLM (unable to shear off). 11/15/2018 ***JOB CONTINUED ON 16-NOV-2018*** ***CONTINUE WSR FROM 15-NOV-2018*** (PROFILE MODIFICATION) R/U LRS & PUMP 290 BBL OF KCL & SAFELUBE, 40 BBLS CRUDE. SHEAR OFF OF LOWER 45KB PATCH ANCHOR @ 10,796' SLM. RAN 4-1/2" BRUSH & 3.50" WIRE GRAB TO LOWER ANCHOR @ 10,796' SLM (X2) (recovered 1/2 element). RAN 3.70" CENT & 2-3/8" BRUSH TO 10,804' SLM. PULLED LOWER 45KB PATCH ANCHOR FROM 10,796' SLM. (missing 1.5 elements). RAN 4-1/2" BRUSH &, 3.50" WIRE GRAB TAG BTM @ 11,310' SLM (recovered 2/3 element). DRIFT W/ 30' OF DUMMY WHIPSTOCK TO 10,779' SLM & UNABLE TO PASS. 11/16/2018 ***CONTINUE WSR TO 17-NOV-2018*** ***CONTINUE WSR FROM 11/16/18 SWCP 4518***(profile mod) DRIFTED 20'x 3.70" DUMMY WHIPSTOCK, 2.50" S -BAILER, S/D @ 10,753' SLM DRIFTED 10'x 3.70" DUMMY WHIPSTOCK, 2.50" S -BAILER, S/D @ 10,782' SLM DRIFTED 30' OF 2-7/8" DUMMY GUN(3.16" od), T/D @ 11,312' SLM DRIFTED 45 KB PKR DRIFT (oal 64"), STOP DUE TO DEV @ 10,846' SLM DRIFTED 2'x 1 7/8" STEM, 3.70" CENT, XO, 1 1/2" BULL NOSE, STOP DUE TO DEV @ 10,877' SLM / 10,900' MD 11/17/2018 ***WELL LEFT S/I PAD OP NOTIFIED ON DEPARTURE*** ***WELL S/I ON ARRIVAL SWCP 4521*** (Perforating) RAN 3.50" CENT, 4-1/2" XN LOC, 2-1/2" S -BAILER LOCATE XN @ 10,236' SLM / 10,242' MD (+6'), TAG AT 10,885' MD. DRIFT TO 11,314' MD W/ 32'x 1.75" BAILER 10/10/2019 ***JOB CONTINUED ON 11 -OCT -2019*** ***JOB CONTINUED FROM 10 -OCT -2019*** RUN SBHPS PER PROGRAM (see log for details). RUN 20'x 3.70" WHIPSTOCK DRIFT TO 3000' SLM ***WELL LEFT S/I ON DEPARTURE, PAD OP NOTIFIED ON WELL STATUS*** 10/11/2019 ****DRIFTED TO 3000'W/ 3.70" x 20' FOR SUBSIDENCE SURVEILLANCE***** ***WELL SHUT IN ON ARRIVAL*** RIG UP ELINE 10/29/2019 ***JOB CONTINUES ON 30 -OCT -19 WSR*** ***JOB CONTINUES FROM 29 -OCT -19 WSR*** FINISH RIGGING UP ELINE AND THIRD PARTY CRANE LOG 1ST GAS VIEW PASS FROM TD AT 11,325' - 10,300' AT 10 FPM WHILE LRS PUMPED AT 2 BPM LRS REDUCED RATE TO 1 BPM AND LOGGED 2ND GAS VIEW PASS FROM 11,325- 10,300' (data still looks good at 1 bpm) BEGIN FIRST C/O PASS FROM 10,950'- 10,550' AT 2 FPM WHILE LRS PUMPS AT 1 BPM 10/30/2019 ***JOB CONTINUES ON 31 -OCT -19 WSR*** Daily Report of Well Operations PBU R -12A ***JOB CONTINUES FROM 30 -OCT -19 WSR*** FINISH BAKER RPM C/O LOGGING PASSES (3 TOTAL) FROM 10,950' -10,550- WHILE LRS PUMPED AT 1 BPM STANDBY FOR WIND 10/31/2019 ***JOB CONTINUES ON 01-NOV-19 WSR*** ***CONTINUED FROM 31 -OCT -19 WSR*** PERFORATE FROM 10780'-10794' WITH 248" MAXFORCE, 6 SPF, 60 DEG PHASED, CCL TO TS = 9.75'. CCL STOP DEPTH = 10770.3' SET 4-1/2" BAKER CIBP AT 10.797' ME (top of plug at 10,796'), CCL TO MID ELEMENT= 7.8', CCL STOP AT 10789.2' 11/1/2019 ***JOB CONTINUES ON 02-NOV-19 WSR*** JOB CONTINUES FROM 01-NOV-19 WSR*** RDMO ELINE 11/2/2019 ***WELL SHUT IN ON DEPARTURE, JOB COMPLETE, HAND WELL BACK TO DSO*** TREE = CNV WELLHEAD = CNV ACTUATOR= BAKERC KB. ELEV = 55.29' REF ELEV = 48.78' BF. ELEV = 19.62' KOP = MaxA le= 2900' 66"D 10897' Datum MD = 10969' Datum TVD = 8800' SS L-80 HYDRL 563, D = 8.681' 2031 N GSG PATCH, ID = 9.860' 2030 - 21 " GSG, 72#, L-80, D = 12.34771-12691 18" WHIPSTOCK (08/22/11) 14 6616 Minimum ID = 3.726" @ 10242' 4-11201 HES XN NIPPLE )pf, D = 3958- 26#, L-80 TC1 XO TO L-80 BTC L-80 BTC. .0383 bof. D =6276 PERFORATION SUMMARY REF LOG: ANGLE AT TOP PERF: 58" @ 10780' Note: Referto Pmdmtion DBlorbisbrk:alperfdata SIZE SPF INTERVAL OprwSqz DATE 2-718' 6 10780-10794 O 11/01/19 3-318' 6 10800-10810 C 0224/12 2-7/8" 6 10904 -10914 C 1121/15 2-7/8' 6 11291 -11293 C 10/07/11 3-3/8' 6 11293 -11303 C 10/06/11 2-718' 6 11320-11330 C 1121/15 4-12" LMR, 12.6#, 13CR-85 VAM TOP, 11438' .0152 bpf, D = 3.958" SAFETY NOTES: .°' 4-12" CHROME LNR & TBG •*. OA OPEN TO FORMATION @ 9-5/8" WINDOW R-1211 UiO!0�9--�9-518-BP 9-5/8' HES ES CEMENTM R RECP = 8.720' 2596' —t9-518' DV pKR GAS LFT MANfIRR S ST MD TVDIDEVITYPE1 VLV JLTCHJPORTJ DATE 5 3421 3386 28 KBG2 DOME BK 16 01/01/16 4 5982 5214 49 KBG2 DOME BK 16 01/01/16 3 8338 6589 41 KBG2 DONE BK 16 01/01/16 2 9576 7701 22 KBG2 SO BK 28 01/01/16 1 10025 8119 22 KBG2 DMY BK 0 09/14/11 MLLOUT WINDOW (R -12A) 6515'-6532" 10101' 4-12" HES X NP, ID 10131' 7" X 4-12" FES TNT R<R D = 3.856" i 10242' — 4-12" FES XN I P, D = 3.725" 10249' 7"X5"BKRZXPNLTPw/10'TBS, D=4.190" 10254' 4-12" WLB3, D=3.958" ELMD NOT LOGGED 10266' 7- X 5" BKR FLEX -LOCK LNR HGR, D = 4210" 10276' S' X 4-12" XO. ID = 3.920" I FISH: -2.5' RUBBER PATCH ELEMENTS I PRUDHOE BAY UNIT WELL: R -12A PERMIT No:'tl 10550 API No: 50-029-20921-01 Sec.32 Tl2N, R13E 1228' FSL & 1801' FWL DATE REV BY COMMENTS DATE REV BY COMMENTS 03/18183 N29E ORIGINAL COMPLETION 1123/18 ZV/JMD PULLED PATCWSET FISH 09N5111 N7ES SIDETRACK(R-12A) 11112/19 TJS/JMD ADPERFS & SETCEP (11/01/19) 10119/11 DGD1 PJC FINAL DRLG CORRECTIONS 1126119 DD/JMD ADDED OKB, REF, & BF ELEV 0226/12 RM/ PJC PERFORATIONS (0224/12) 1125/15 JLS/JMD SET PATCWADPERFS 1122/15 BP Exploration (Alaska) 01IM16 GJB/JMD GLV C/O (01/01/16) Baker S PRINT DISTRIBUTION LIST Hughes FINALCD/DVD COMPANY BP Exploration Alaska Inc. I, Attn: Ricky ElgaricoC WELL NAME R -12A (las, dlis, PDF, META, FIELD Prudhoe Bay Unit LOGS COUNTY North Slope (Compass) 211055 31495 Please sign and return one copy of this transmittal form to: BP Exploration (Alaska) Inc. Petrotechnical Data Center, LR2-1 900 E. Benson Blvd. Anchorage, Alaska 99508 or AKGDMINTERNAL@bp.com to acknowledge receipt of this data. LOG TYPE RPM:PNC3D-CO BHI DISTRICT Alaska --- LOG DATE October 30, 2019 AUTHORIZED BY Dirk Zeijlemaker EMAIL Dirk.zeiilemaker(@bakerhughes.com TODAYS DATE November 21, 2019 Revision STATUS Final Replacement: No Details: Rev. Requested by: -- COMPANY ADDRESS (FEDEX WILL NOT DELIVER TO P.O. BOX) PERSON ATTENTION V LOA, PBOC, PRB-20 (Office 109) D&C Wells Project Aids Agatha Rt & Barbara Glassmaker 900 E. Benson Blvd. 'Anchorage, Alaska 99508 FIELD / FINALCD/DVD - , L.:..1r FINAL I, Attn: Ricky ElgaricoC PRELIM LOGS I (las, dlis, PDF, META, SURVEY REPORT LOGS CGM, Final Surveys) (Compass) # OF PRINTS 3 ExxonMobil, Alaska # OF COPIES I#UFGUPIE6 IlrUFCOPIES [] 2 Conocol'hillips Alaska IncT - , L.:..1r 0 1 I, Attn: Ricky ElgaricoC SII 5 9019 ATO 3-344 ... 700 G Street J A O G C C 'Anchorage, AK 99501 3 ExxonMobil, Alaska 'I Atm: Lynda M. Yaskell and/or Lisa Boggs 13201 C Street, Suite 505 (Anchorage, AK 99503 e of Alaska - AOGCC I v Natural Resources Technician II W. 7th Ave, Suite 100 j .bursae, .Alaska 99501 51 DNR - Division of Oil & Gas *** Attn: Garret Brown 1550 West 7th Avenue, Suite 7100 (Anchorage, Alaska 99501 61 BP Exploration (Alaska) Inc. Procurer hnical Data Center, LR2-1 '1900 E. Benson Blvd. Anchorage, Alaska 99508 'Attn: David Itter TOTALS FOR THIS PAGE 0 0 1 4 0 0 STATE OF ALASKA 0 ALASKA OIL AND GAS CONSERVATION COM ION REPORT OF SUNDRY WELL OPERATIONS 1. Operations Performed Abandon D Plug Perforations I3 Fracture Stimulate 0 Pull Tubing 0 Operations shutdown ❑ Suspend 0 Perforate EI Other Stimulate 0 Alter Casing ❑ Change Approved Program 0 Plug for Redrill ❑ Perforate New Pool ❑ Repair Well 0 Re-enter Susp Well 0 Other:Set Perf Straddle Patch 13 2. Operator Name: BP Exploration(Alaska),Inc 4. Well Class Before Work 5. Permit to Drill Number 211-055 3. Address: P.O.Box 196612 Anchorage, Development ® Exploratory 0 AK 99519-6612 Stratigraphic 0 Service ❑ 6. API Number: 50-029-20921-01-00 7. Property Designation(Lease Number): ADL 0028282 8. Well Name and Number: PBU R-12A 9. Logs(List logs and submit electronic and printed data per 20AAC25.071): 10. Field/Pools: PRUDHOE BAY,PRUDHOE OIL 11.Present Well Condition Summary: RECEIVED Total Depth: measured 11440 feet Plugs measured feet true vertical 9075 feet Junk measured feet DEC 2 1 2015 Effective Depth: measured 11440 feet Packer measured 10126 feet true vertical 9075 feet Packer true vertical 8212.65 feet AOGCC Casing: Length: Size: MD: TVD: Burst: Collapse: Structural Conductor 80 20"x 30" 27-107 27-107 Surface 2661 13-3/8"72#L-80 27-2688 27-2687 4930 2670 Intermediate See Attachment See Attachment See Attachment See Attachment See Attachment See Attachment Patch 30 3-1/2"9.2#L-80 11790-11820 8770-8784 10160 10530 Liner 1189 4-1/2"12.6#13Cr8 10245-11434 8323-9071 9020 8540 Perforation Depth: Measured depth: 10800-10810 feet 10904-10914 feet 11291-11293 feet 11293-11303 feet 11320-11330 feet True vertical depth: 8775-8780 feet 8820-8824 feet 9002-9003 feet 9003-9008 feet 9016-9021 feet Tubing(size,grade,measured and true vertical depth) 4-1/2"12.6#13Cr8 23-10250 23-8327 Packers and SSSV(type,measured and See Attachment See Attachment See Attachment true vertical depth) 12.Stimulation or cement squeeze summary: Intervals treated(measured): cApiN FLED8e:O16 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: 395 18459 274 2013 1640 Subsequent to operation: 184 366 2390 2002 476 14.Attachments:(required per 20 AAC 25.070.25.071,&25.283) 15.Well Class after work: Daily Report of Well Operations ® Exploratory ❑ Development l3 Service 0 Stratigraphic ❑ Copies of Logs and Surveys Run 0 16.Well Status after work: Oil I3 Gas 0 WDSPL 0 Printed and Electronic Fracture Stimulation Data 0 GSTOR ❑ WINJ ❑ WAG 0 GINJ ❑ 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 Contact Catron,Garry R(Wipro) Email Garry.Catron@bp.com Printed Name Catron,Garry R(Wipro) Title PDC Principal Engineer Signature A Phone +1 907 564 4424 Date 12/21/15 Form 10-404 Revised 5/2015 L 12./2.T31f�RBDMSu.DEC 2 2 2015 ."Q"/Z7 ' — Submit Original Only • • a o 0 0 0 0 0 r� Co m �r co v LO LO p N V LO CO CO U N 0 0 0 0 0 0 0 i co r- ct N N O) CO N CO O m CO CO O OD CA ti O) et Cfl CO N O LO CO N Cfl O 10 LC) O f- CO N N CO CT) 00 CO jI I I I I I I Loma N N f� M N N N N o CO N N CO CO C CO O O 'Cr O O LO O O Oco CO NO N N N O O - O O r r r r V.0 CI i i i i i i i Q QN co o L0 ti r co N O co N N N N o c o N C N nM LO Q. co coO 0 c o c ocoOco J J CO J J co = 000 N *k J *k •N N X N- V � CO " NNCUb � ° (NCO N M f` N CO O 0!) M V 4 M '4' _ Ln C3)0)O CO O CO CO o N C CO CO O co N N N O tt W W W Q Q Q CI-- 000 co 0 c = Z OD Z< m • • Packers and SSV's Attachment PBU R-12A SW Name Type MD TVD Depscription R-12A PACKER 2004.8 2004.74 9-5/8" BOT External CSG PKR R-12A TBG PACKER 10126.29 8212.65 4-1/2" HES TNT Perm Packer R-12A PACKER 10254.52 8331.8 5" Baker ZXP Top Packer R-12A PACKER 10790 8769.75 3-1/2" Baker 45 KB Packer R-12A PACKER 10810.78 8780 3-1/2" Baker 45 KB Packer i • (n - CL -° 0 (n 0 > U) U Q' L i C D O _ (n y0 C N D O = (6 Y O -O n (u c t 0 L C a) Q = C o 3 N C a) C) (u ° a) N _Q �w N cu m to a f� c,_ C U L U N I- N Q. N N i ao Q 0 O * C C ° 6 (1) U co C ,‘ ° O) C0• 49 C •u)O L 0 ) CL * N• OL N 0 O N a'' O t N (u t O _ _ N O 0 '- - m _� p O a) > O L (1) Cli U a)) M "a O (n Q' (lU a) C _c C U t� a) Q C Q 0) > > U N (C6 C O 0 (1) N (u — > 0) > C C 4_, O a) H Y d a) N a) E >-- O > C CE � (� Q co � 0 � o f c_ c a) Q a) o co> Fn - co x 0 * UU) N f° w C - C ? M c D in > CL N Ua° O (o 0 Q a) C ch 6 D '(a m - L o 0 - 0 (n w U 0 a(°i c ° U o 0 0 c N ao N U0 a (B NN-a C) L- m O a) c h- - C C U O O J * r O — o .c-2Y 0 o - > — — c o (uIo J O >_ a) o °) a (Lu N - m N Q� E CU o CD 0 ('`) min o ? U -0 ° co (D D . O N ca c .� c c _c .0 C * a) O _ C . j Y O (O . 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OL O U N a o U -p a• 0 C m ° a) O co - O U d = L o O a) 4- c _ o U [_ � pp � a) o LO U) � N- TS C 3 � d � D ion C � N o c � Via\° v [ a) • �, (� 3 -° O • N 2 >, C 7 N D * I� N- C C p0 . C N N Et _) 2 CO O U O to to N Oc O O ~ d ~ O .� a) C *k a a) to O Ld a) .' a) \ -p off 0 cn (n0CDctO .E OD N cu cuaNO °? OF- Ocno ,— nUND `— to U � • p c Qc * OF- � UF- _E a) C2N � U L -3 /X * (nCr * � F- D Q'� OL a) � = ? JDJ : UU2 .(� O * U2 or.) (u .- + .- ..q42 : J * 5J * .- U2 -o .cm '�o * w Q10 in 10 Lo 10 in 10 a O O O O o O O >- N N N N N N (\J O° co 6) 6) O O r' N N 0 = r N- r = r r Q • 0 •c L a) 1 o) O (O d V _ c - U) tri 4) a) C m Q U) N -p ta) *kc * a) 0 3 * c c0 N O o * o L 0_ L- p H _ * U V c O c Ln '- O ,— O 0 Q _0N ) p N dm _ cL N L Cl-- N # _ E D a) D ;O Q a) m a) * a) O2 c Et CI. QLJ- 0 CO a) CD c a) O CO c = a) a) D p .oi v > m0 OO .� E O w aO O Q OOJ Ei 0 O pOo d N O) Q. L Q D 0 0 0 'i 2 -p LC) . Y N L") E 0 N _ a) _ V c NO + TT; ' cH _= Q 3 W o y 0 Q Y > o O _` a) _ 0,1 > O p Umc cOo a) ? O oop a) Q N 7, _o0- p E c * _o2 = c ccn c E E co o L czn o g o Q- _ No _c a HU Amo I— U_ H7 u) H O o v c0 L - � - >, - - * -a Q (O CA ° L N '� N O a '� * 5 "L- IE � a m0 3 0 5Q -o > � o LI cet N _. -ppm � * `t c c0 0) C p .0 � � m - O '3 o a* c0 in Q Y mQ E o �nO10 � i0 � 010 0 t 0 2 U '— Q L Q— O CL E _ `� LLO a) 4- 0 ter * u-- cv Q 0 d N c 3 r O O p 0.. N * -- N LO N- C1 LL _ Ocor Li_ QeO � � M � � • N a O fes- ��/� dj I- fX N H r' > 1 UVJ > 3CL - UCOr0C N O -a •- O - 2 c cn E _c _. o v) E u�) E O _0 a o Q ° O 3 cpo ,— : Q ° "' Q U • i0 CI) a) r- c 2 c o c o _ �r 6 o 0 0 a) J a) .. o }. o c o [n — rn (0 c .c c -o to O 3 2 0 Q E a c .E -o c0 r` IY — c0 D a) * fi o c0 2 E : m o D a) CO a) "O 2 0 0) c Lo c- a) _, Q O e c O L O 2 ' NET U a) � O m 0 co rx 0 a) +, 4) Z-_-, N D c 0Oj 4? >+ O H O N D '. - O O H O . H O V a) N to -7 (n U N c -p 0 c) W U c w U (O O H O p L 2 ct * r H 0 c O * rz * p ct * O - L a) c) c) 3 a) * J * - OO C .EN * J * 0J * cpDOZ Ln L1) Ln I() LO O O O O O N N N N NN- Cr) r N N M `- CN v- r N N N N r r N- ,- r r N- r r TTS= L7V1t • SAFETY NOTES: ***4-1/2"CHROME LNR&TBG W@,.LF>EAO= CM • ACTUATOR= BAKER C R-1 x!'11 A '*'OA OPEN TO FORMATION @ 9-5/8"WINDOW KB.ELEV= 55.29' BF.REV= 21.94' I M •4 KOP= 2900' ►moi •4 Max Angie_ 66"@ 10897' ►t1 •i ►• •� 1950 H9-5/8"FES ESC /TER,D=7.00" Datum MD= 10969' �i Datum TVD= 8800'SS 2009' H9-5/8"BKR ECP,D=8.720" '•i 2021' —4.1/2"HES X NP,D=3.813" 9-5/8"CSG,47#,L-80 HY DRIL 563,D=8,681" — 2030' e I 1 $ i L5/8"BKR BOVVEN CSG PATCH,ID=9.860" --2030-2034' R •� 2598' —19-518"DV PKR 13-3/8"CSG,72#,L-80,D=12.347" — 2695' GAS LFT MANDRELS ST MO TVD DEV TYPE VLV LTCH PORT DATE H C 5 3421 3386 28 KBG2 DOME MK 16 09/26/11 9-5/8"WHIPSTOCK (08/22/11) 6515' 4 5982 5214 49 KBG2 SO BK 20 09/26/11 9-5/8"CSG,47#,L-80 BUTT,D=8.681" —6515 3 8338 6589 41 KBG2 OMY BK 0 09/14/11 -�'`- 21 957610025 $1770119 22 22 KBG2 KBG2 DMY OMY BK BK 0 0 09/14/14/11 11 9 518"EZSV(08/21/11) —{ 653T Minimum ID = 2.36" @ 10790' �� 4-1/2" BOT PATCH �' WLLOUT WINDOW(R-12A) 6515'-6532" 09/ 10101' H4-1/2"FES X NP,N3=3.813" I Z 10131' —17"X 4-1/Z'FES TNT PKR D=3.856- 10165' —14-1/2"HES X NP,n=3.813" I ' 1 _______-- 10242' —141/2"FES XN NP D=3.725" 10249' Hi"X 5"BKR ZXPN UP w/10'TBS,D=4.190" 41/2"TBG,12.6#,13CR-85 VAM TOP H 10254' zc. 10254' --14-1/2"WLEG,D=3.958" 0152 bpf,D=3.958" ( H H.MD NOT LOGO ED 7"LNR 26#,L-80 TCI XO TO L-80 BTC --j 10317' X \ 10266' 7"X 5"BKR FLEX LOCK LNR HG = 1 �--- � R D 4.210" 7"LW 26#,L-80 BTC,.0383 bpf,ID"6.276 H 10444' I ® 10275' -5"X 4-1/2"XO,D=3.920" PERFORATION SUMMARY REF LOG: 7 g 10790'-1082CH4-1/2"BOT PATCH,ET=2.36"(11/22/15) ANGLE AT TOP PERF: 65" @ 10904' n Note:Refer to Production OB for historical pert data S SIZE SFE INTERVAL Opn/Sqz DATE 3-3/8"" 6 10800-10810 C 02/24/12 2-7/8"r 6 10904-10914 0 11/21/15 2-7/8"r 6 11291-11293 0 10/07/11 3-3/8"r 6 11293-11303 0 10/06/11 2-7/8"r 6 11320-11330 0 11/21/15 PBTD 11355' •i*iii• 4-1/2"LNR 12.6#,13CR 85 VAM TOP, —{ 11438' .0152 bpf,ID=3.958" DATE REV BY I COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNTF 03/18/83 N26E ORIGINAL COMPLETION 10/19/11 DGEY PJC FINAL DRLG CORRECTIONS WELL: R-12A 09/15/11 N7ES SIDETRACK(R-12A) 02/26/12 RAN PJC PERFORATIONS(02/24/12) _ PERMIT No:"2110550 09/22/11 PJC DRLG DRAFT CORRECTIONS 11/25/15 JLS/JMO SET PATCHIADPERFS(11/22/1° AR No: 50-029-20921-01 10/12/11 CJN PJC GLV CIO(09/26/11) Sec.32,T12N,R13E, 1228'FSL&1801'FWL 10/12/11 SRD PJC ADPERFS(10/6-7/11) 10/12/11 SRO/PJC MAX ANGLE(09/28/11) BP Exploration(Alaska) Image Project Well History File Cover Page XHVZE This page identifies those items that were not scanned during the initial production scanning phase. They are available in the original file, may be scanned during a special rescan activity or are viewable by direct inspection of the file. 071 L - 05'S Well History File Identifier Organizing(done) Two-sided III II111111 Iliii ❑ Rescan Needed III 1111111 111111 RES AN DIGITAL DATA OVERSIZED (Scannable) Color Items: ❑ Di ettes, No. E Maps: VGreyscale Items: Other, No/Type:Cp / o. er Items Scann ble by a Large Scanner S ❑ Poor Quality Originals: �.I OVERSIZED (Non-Scannable) ❑ Other: ❑ Logs of various kinds: NOTES: ❑ Other:: BY: Maria Date: IQ/3 o /it /s! Project Proofing II 1111111111111111 BY: AIM Date: 6/3 O`9. /s/ (V)P Scanning Preparation U-- x 30 = l a O + cg, = TOTAL PAGES 1 a oL (Count does not include cover sheet) BY: Date: • 30 / /s/ Production Scanning 11111E111M HI Stage 1 Page Count from Scanned File: I D3 (Count does include cover eet) Page Count Matches Number in Scanning Preparation: YES NO BY: CCP Date: (/ 30 /it /s/ wi P Stage 1 If NO in stage 1, page(s) discrepancies were found: YES NO BY: Maria Date: /s/ Scanning is complete at this point unless rescanning is required. 111111111111111111 ReScanned 111111111111 II III BY: Maria Date: /s/ Comments about this file: Quality Checked II 1111111111111 III 11 1 I 0 9 a) Q = O 0 N CC 0 > a) CV I a H J c w a 2 0 O " 73 N Z I ccTs v c CO -a v W in 0 0 U OJ N _U 2 LL cc ch 2 v C v a) a 03 cu N 9 �Ia ix 0 f6 a) CO 0 a ° a CO a N N 1 0 O 0 a m 20' L C J 2' 1 N N 2 0 O 0 N(n a LL. -a LL Z Z 7 v ° J co tI) ii w o 0 a a cn 1- 2 O 0 NZ 0 0 ° } Q a°) o U iip .ZO > a°i a m 2 re m a`) a as w '� ! > a a) r o c >0 (n to CI Lu a a) $(n a _ m O 0 a aci cn cn in N o 2, a)• o ° Z W ,CC °0 3 c.w a°i Ce a y I a E m m c ° � a 0 U) F- 0� > va c O c au) 2 O Cl) E o .N s N m c 0 a co O O c .N d/ a) on W N .a., a) O . m m CO° g U F- 0 N a 0.S 0 Ln 0 �-- Q (n l 0 OC) F- a E - �° n 0 o g a o N J 2 _ _ C30 0 C O ° 0 U O O o 9'i. 2 a �fO )_ = T w LL < c t a N (n J F a O N= O O , 0I c .fl ,-- N N N M M CO OM CS N N N W g 1 co Ca N N N 'a N NM M M M M CO M M CV n p ce 0, a) ,- o o O O O O o O M co co J -a a X c c c c c c c c c c c c c c c c c LU W m CI) a) a) a) a) a) a) a) a) a) a) a) a) Cl) a) a) 0 m_1 I I I a a a a a a a a a a a a a a a a a 00000 0 0 0 0 0 0 0 0 0 0 0 0 0 O Z `o 0. o 0 C) 0 0 0 0 C) C) CO 0) rn CO 0)CO rn co o o rn co < Cl) . 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CA CSI t-I ct 0 0 -, X X 4 -I ii > in Li z Ir.sXXX XXX XXXXXXXXX a cc Ci --..... kgr- ., 0 , 1 ,,. ). - en 16. v.oCl't 1M ri.c. 0 .., ' E7) 1- 0, N-. c0 co co r-- co co a) 18. , -.--., ,- el oo 'cr N .— 6-6 0.1 cO CO CD CN re 0) 0) ' O C/2 > ,-,.%. 0 e- a- 0 0 0 c. C_NI_ a- 0 0 0 z 0 0 C) 0 .= 0 0 0 0 0 ff ;7; ° 0 0 888 ,= `,5880 ° D . c, 9 c) c, c., c) >-. cl. o , cp 'A '4°' LL 4 4 LL o ci 4 c.) 4 o o I 0 u .... f--. -0 < .4 co li.1 UJ o I) < LLI li.1 u. ti.1 03 03 N 0 C) CO C 0 06-2, E;)., (.2 •,;, > 01 _ CD l ro E cn z ey; a) R tz a•• _ 0 ol E --1 g a. '6 cm --w- < al , Lii < Ca Ca C) 10 CO < N < 03 .- c? < < r-- 0,) D = _CD co 6K1 °- •txrc - f, U Cr3 8= 0 8 5 4 . Cl. ro a Lu ,-r) .-c •• ro 0- 0 U (I) 0_ 0 C Cl x "E_ co m < ._. al i bp Schlumberger Schlum ever u �, ..a�s: r Drilling&Measuremen s MY r r,<„ 2525 Gambell Street.Suite 400 Anchorage AK 99503 Tel(907)273-1700 J + -; , Fax(907)561-8317 Date: 12-Sep-11 Well Name: R-12A Company: BP Exploration (Alaska) Inc. API Number: 500292092101 AFE Number: X3-00XM8-C Field: Prudhoe Bay Rig: Nabors 7ES 1 by Schlumberger Formation Evaluation 9 5/8 inch Whipstock: The whipstock was set with a PowerPulse* MWD tool. The Tool stayed in the assembly for milling operations,providing continuous inclination throughout the process. 8-1/2 inch Intermediate Hole: The intermediate section was drilled from 6550 feet MD to 10449 feet MD in two runs. VISION* Resistivity, and Gamma Ray data were supplied in real time and from memory between the intervals. The BHA contained an ARC* LWD tool, TeleScope* MWD tool and motor in the first run. The second run consisted of an ARC* LWD tool,TeleScope* MWD tool and PowerDrive X5 Rotary Steerable tool. The run reached total depth before drilling into the Sag River formation. Annular Pressure While Drilling was provided for the intermediate hole bit run in real time to evaluate hole cleaning and ECD trends.7 inch casing was then installed and cemented after conducting a cleanout run. 6-1/8 inch Production Hole: The production section was drilled from 10449 feet MD to a total depth of 11440 feet MD in two runs. The BHA contained an ImPulse* MWD for VISION* Resistivity and Gamma Ray measurements in real time and recorded mode over the intervals.The first one was terminated due to suspected bit failure. The second run was terminated upon reaching TD after hitting all geo-targets. The final measured bottom-hole temperature was 142.7 degrees Fahrenheit. Schlumberger Oilfield Services — Drilling & Measurements appreciates the opportunity to provide BP Exploration(Alaska)Inc.with MWD and LWD services for well R-12A. Sincerely, Russell L.Whitney MWD/LWD Engineer Schlumberger Drilling& Measurements 3 1 053 mA), 2E3 'Schlumberger X. 0 C Drilling&Measurements MWD/LWD Log Product Delivery Customer BPXA Dispatched To: Christine Shartzer(AOGCC) Well No R-12A Date Dispatched: 12-Sep-11 Installation/Rig Nabors 7ES Dispatched By: Russell Whitney Data No Of Prints No of CDs 1 Surveys 14' 2 Perform Letter t r1 1 Logs: w„[, VISION Service MD 2in - 9609 to 15778 1 PDF included VISION Service TVD 2in 9609 to 15778 1 PDF included LAS Digital Data • Please sign and return to: Analisa Steger Received By: (J BP Exploration(Alaska)Inc. 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I ..ii• ...b. ...ma el .../ r' 0 0 0 0 0 0 0 CI 1-••• .44 Cf 0 0 CS (.3 d 0' Ci CI I I 1 1 1 1 .=,,4... ,., 1 r STATE OF ALASKA ALA-.,A OIL AND GAS CONSERVATION COMMIa„ION REPORT OF SUNDRY WELL OPERATIONS 1.Operations Abandon ❑ Repair Well ❑ Plug Perforations ❑ Stimulate El Other ❑ Performed: Alter Casing ❑ Pull Tubing❑ Perforate New Pool ❑ Waivers Time Extension ❑ Change Approved Program ❑ Operat.Shutdown❑ Perforate Q Re-enter Suspended Well ❑ 2.Operator BP Exploration(Alaska),Inc. 4.Well Class Before Work: 5.Permit to Drill Number: Name: Development S Exploratory ❑ — 211-0550 3.Address: P.O.Box 196612 Stratigraphic Service D 6.API Number: Anchorage,AK 99519-6612 - 50-029-20921-01-00 8.Property Designation(Lease Number): 9.Well Name and Number: ADLO-028282 00)3,;1'77 4 314i .. PBU R-12A 10.Field/Pool(s): F PRUDHOE BAY FIELD/PRUDHOE OIL POOL 11.Present Well Condition Summary: Total Depth measured 11440 feet Plugs(measured) None feet true vertical 9075 feet Junk(measured) None feet Effective Depth measured 11355 feet Packer(measured) 2598 10131 10249 feet true vertical 9033 feet (true vertical) 2598 8217 8326 feet Casing Length Size MD TVD Burst Collapse Structural Conductor 77' 20”X 30" 33 - 110 33 - 110 Surface 2662' 13-3/8"72#L-80 32 - 2694 32 - 2693 4930 2670 Production 6484' 9-5/8"47#L-80 31 - 6515 31 - 5559 6870 4760 Liner 10414' 7"26#L-80 30 - 10444 30 - 8508 7240 5410 Liner 1189' 4-1/2"12.6#13CR85 10249 - 11438 8327 - 9074 Perforation depth: Measured depth: SEE ATTACHED- _• _ True Vertical depth: _ _ Tubing:(size,grade,measured and true vertical depth) 4 1/2"12.6# 13CR-85 29-10254 29-8331 Packers and SSSV(type,measured and true vertical depth) 9-5/8"DV PACKER —" J 25 2598 4-1/2"HES TNT PACKER 0, 101 1 8217 5"BKR ZXPN LTP " f� w '��� 1024 8326 AI 12.Stimulation or cement squeeze summary: , la la Intervals treated(measured): COmR11SS\Ori &Gas COnse h Treatment descriptions including volumes used and final pressure: A�� °Cag 13. Representative Daily�verage Production or Injection Data Oil-Bbl Gas-MCI Water-Bbl Casing Pressure Tubing pressure Prior to well operation: 79 63 119 192 Subsequent to operation: 132 118 109 196 14.Attachments: 15.Well Class after work: Copies of Logs and Surveys Run Exploratory❑ Development'Q Service ❑ Stratigraphic ❑ Daily Report of Well Operations X 16.Well Status after work: Oil ..Q Gas ❑ WDSPL ❑ GSTOR 0 WINJ ❑ WAGS GINJ ❑ SUSPE 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: NA Contact Nita Summerhays Printed Name Nita S merh.ys Title Data Manager Signatu,:.. „/,- 0,' /" .�►' Phone 564-4035 Date 3/8/2012 Form 10-404 Revised 10/2010 RBDMS MAR 0 9\LUIL .3. 7,/, Submit Original Only w O N 10 CO m OD 01 04 m O O ti ✓ cr Q) co O. d a •v > H aNN � I- oo � t O O NI Q.OM() CO a a y Z W I-- > 0O O oul MN o WwwW as m .- .- o Zama as .c `- '- � 71OOa uj Li 0. LL W J J W WG G a U. UJ� aa ^J '� MMM as WW -1 < < 001- 1- CI- Z Z z2 0Wcncococncncnm LU 2NcsooOl V7 _ � Naa c t i w u. CC co 11- 0 0 a2 aTcr) cancancOn ) ccoocco a) ID a o W o g 0 c O i▪l a 0. G 0 O W I- I- aaaaQad � w 00 a- a- c� acnm—_CO m _— C9C90 cooN w � aa � VVv -I 00 LuM a000 = = IZ as p� J J O QOmmLiu. 2220 a) E 3• NNN u.4dCD o.. OJ - y JZ Cl) rta' ct < < ILLL2220 by Schlumberger Date: 12-Sep-11 Well Name: R-12A Company: BP Exploration(Alaska)Inc. API Number: 50-029-20921-01 AFE Number: X3-00XM8-C Location: X=5,977,711.800 US Feet;Y=635,440.010 US Feet Field: Prudhoe Bay Rig: Nabors 7ES Drilling and Measurements Field Support: Operations Manager, Mario Pepe Field Service Manager, Brian Muzny Drilling and Measurements Field Crew: Cell Manager, Russell Whitney Cell Engineers, Jessica Dake Carlos Ilizaliturri SERVICES PROVIDED Services Services Dates Depth Intervals Directional Survey Service 21-Aug-11 to 11-Sep-11 6515 feet to 11440 feet VISION*(Gamma Ray) 23-Aug-09 to 11-Sep-11 6550 feet to 11440 feet VISION*(Resistivity) 23-Aug-09 to 11-Sep-11 6550 feet to 11440 feet VISION*(Density) 8-Sep-11 to 11-Sep-11 10449 feet to 11440 feet VISION*(Neutron) 8-Sep-11 to 11-Sep-11 10449 feet to 11440 feet OPERATING STATISTICS Total MWD Pumping Time: 262.22 hours Total LWD Pumping Time: 104.81 hours Total MWD Time Below Rotary: 299.5 hours Total LWD Time Below Rotary: 176.5 hours Total MWD Depth Interval: 4934 feet Total LWD Depth Interval: 4899 feet Total MWD Runs: 6 Total LWD Runs: 4 JOB PERFORMANCE Directional The final MWD survey point was located at 11389.85 feet with an inclination of 60.83 degrees and an azimuth of 131.84 degrees. This direction and inclination was projected from the final survey point to TD, which resulted in the following bottom hole coordinates. Measured Depth: 11440.00 feet True Vertical Depth: 9074.58 feet Displacement at Azimuth: feet at degrees 2 R-12A DESCRIPTION OF WORK COMPLETED NRWO OPERATIONS EVENT SUMMARY ACTIVITYDATE SUMMARY 1/10/2012***JOB CONTINUED FROM 9-JAN-12*** RIH WITH MH22/ERS/PEKB/PGGT/ 10'3-3/8" HSD GUN OAL=23', OAW=350 FISHING NECK SIZE=1.38" TOOL SETTING DOWN AT 1530'AND PULLING OVERPULL ON TOOL DURING UPWEIGHTS METH PUMPED WHILE POOH TO THAW HYDRATES AROUND TOOL, INSTRUCED TO POOH AND HAVE LRS FP FLOWLINE AND TUBING EAT SURFACE, TOOL HAS SMALL AMOUNT OF PARAFFIN AND TAR AT SURFACE, WSL NOTIFIED 'LAY DOWN EQUIPMENT AND LEAVE LOCATION ARRIVE ON LOCATION AND BEGIN PT ***JOB CONTINUED ON JAN-11-12*** 1/10/2012 T/I/0=2000/1900/150 Hot Oil TBG wash (PERFORATING) Freeze protected the, flowline with 10 bbls neat meth and 78 bbls crude. Pumped 15 bbls neat meth and 135 bbls heated crude down the TBG. Tags hung. Pad Op/PE notified, EL on location. SV, WV, SSV closed. MV open. AL closed. CVs OTG. FWHP=1500/1980/240. 1/12/2012 ***CONT FROM 01/11/12 WSR***(fish) FISH E-LINE TOOL STRING (live 3 3/8"perf gun) FROM 11,255' SLM. NO OBSTRUCTIONS ***WELL LEFT S/I ON DEPARTURE, PAD OP NOTIFIED*** 2/23/2012 T/I/0=200/1300/200. Temp=Warm. WHP's TBG FL. AL=online. TBG FL near ` surface. SV=closed. WV,SSV,MV=open. IA& OA=open to gauge. 8:30. 2/23/2012 T/I/0=250/1300/220 Temp = SI Freeze protect TBG & Flowline (Pre E-line) MIRU ***WSR CONTINUED TO 02-24-12*** 2/24/2012 ***WSR CONTINUED FROM 02-23-12*** Freeze protect TBG & Flowline (Pre E- line) Freeze protected flowline according to WOA procedure. Pumped 2bbls 60/40, 31 bbls crude, 5 bbls 60/40, 47 bbls crude, 3 bbls 60/60. Pumped 5 bbls 60/40, 70 bbls crude down tbg. Final WHP's 1900/1980/260 WV,SV=closed SSV, MV, IA,OA= open pad op notified on departure 2/24/2012 2040/1910/220. Temp = SI. T & IA FL (e-line call in). AL open @ casing valve. T' FL @ 7170' (1188' below sta#4 SO, 109 bbls). IA FL @ 6050' (68' below sta#4 SO, 324 bbls). ISV, WV = C. SSV, MV = 0. IA, OA= OTG. NOVP. 1500. 2/24/2012 ***WELL SHUT-IN ON ARRIVAL***(SLB ELINE ADPERF ) INITIAL T/I/O = 1940/1960/80 PSI NOTICE HIGH IA PRESSURE. NOTIFY ELINE AND WELL INTEGRITY WSL VERIFY AL SHUT IN AT MANIFOLD/WELLHEAD. VERIFY IA INTEGRITY 'BEFORE PERFORATING BY BLEEDING IA TO 1750 PSI WATCHED IA PRESSURE FOR 30 MIN AND REMAINED AT 1750PS1 ,CONTINUE RU ***JOB TO CONTINUE ONTO 25 FEB 2012 *** 2/25/20121***JOB CONTINUED FROM FEB 24 2012 ***(SLB ELINE ADPERF ) RIH W/MH-22, AH-38, ERS, EQF-46, UPCT, PEKB, FIRING HEAD, 10' 3-3/8" 3406 POWERJET HMX GUN - OAL = 27', 1.38" FISHING NECK, MAX OD AFTER SWELL = 3.66" PERFORATING AT 10800-10810' , CCL STOP DEPTH AT 10796.5 ' ALL SHOT FIRED, NO CHANGE IN PRESSURE DURING PERF OR POOH. VALVE POSITIONS, MASTER, GAS LIFT, SSV = OPEN, SWAB,WING = 'CLOSED. TREE CAP ON AND TESTED. VALVES OPEN TO GAUGES. FINAL T/I/0=2015/1750/40, DSO NOTIFIED ON DEPARTURE ***WELL SHUT-IN ON DEPARTURE*** FLUIDS PUMPED BBLS 6 DIESEL 44 METH 340 CRUDE 390 TOTAL WELLHEAD= CW SAI NOTES: "`4-1/2"CHROME LNR&TBG ACTUATOR= BAKER C R-1 2A ,..OM OPEN TO FORMATION fa 9-5/8"WINDOW KB. ELEV= 55.29' BF ELEV= 21.94' I . :4 KOP — 29D0' ►• 4 •4 Max Angle= 66" 10897' e• 0 1950' -19-5/8"HES ES CEMENTER,ID=7.00" Datum MD= 10969' V• •� Datum TVD= 8800'SS on T 2009' —9-518"BKR ECP,ID=8.720" • .14 2021' —I4-1/2"HES X NIP,ID=3.813" 9-5/8"CSG,47#, L-80 HYORIL 563,ID=8.681" — 2030' p i a �4 9-5/8"BKR BOWEN CSG PATCH, ID=9.860" H 2030 -2034' R .i 13-3/8"CSG,72#, L-80, ID=12.347" H 2695' 2598' —19-518"DV PKR GAS LIFT MANDRELS ST MD TVD DEV,TYPE VLV LTCH FORT DATE 9-5/8"WHIPSTOCK (08/22/11) H 6515' 10 5 3421 3386 28 KBG2 DOME BEK 16 09/26/11 4 5982 5214 49 KBG2 SO BK 20 09/26/11 9-5/8"CSG,47#,L-80 BUTT,ID=8.681" --{ "6515 1~.„ 3 8338 6589 41 KBG2 DMY BK 0 09/14/11 9-5/8"EZSV(08/21/11) H 6537` 2 9576 7701 22 KBG2 DMY BK 0 09/14/11 1 10025 8119 22 KBG2 DMY BK 0 09/14/11 Minimum ID = 3.725" @ 10242' *1'1 4-112" HES XN NIPPLE MILLOUT WINDOW(R-12A) 6515'-6532" 10101' --14-112"HES X NIP,ID=3.813" I 10131' —17""X 4-1/2"HES TNT PKR,ID=3.856" $ 10165' --141/2"HES X NIP,ID=3.813" II 10242' H4-1/2"HES XN NIP,ID=3.725" I 10249' —{7'X 5"BKR ZXPN LTP w/10"TBS,ID=4.190" 4112 TBG,12.6#,13CR-85 VAM TOP H{ 10254' 10254' —141/2"WLEG,ID=3.958" .0152 bpf,ID=3.958" —ELMO NOT LOGGED 7"LNR,26#, L-80 TCII XO TO L-80 BTC —1 10317' 1--X X 10266' —17"X 5"BKR FLEX-LOCK LNR HGR,ID=4.210" 10275' —15"X 41/2"XO,ID=3.920" 7"LNR,26#,L-80 BTC, .0383 bpf,ID x.276 —1 10444' • , PERFORATION SUMMARY REF LOG: �7 ANGLE AT TOP PERF: 60" @ 10800' 0 Note:Refer to Production DB for historical pert data SIZE SPF INTERVAL Opn/Sqz DATE 3-3/8" r 6 10800- 10810 0 02/24/12 2-7/8"r 6 11291 - 11293 0 10/07/11 3-3/8"r 6 11293-11303 0 10/06/11 PBTD H 11355' 4-1/2"LNR,12.6#,13CR-85 VAM TOP, H 11438' �•••�•, .0152 bpf,ID=3.958" +•-• DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 03/18183 N26E ORIGINAL COMPLETION 10/19/11 DGD/PJC FINAL DRLG CORRECTIONS WELL: R-12A 09115/11 N7ES SIDETRACK(R-12A) 02/26/12 RMV PJC PERFORATIONS(02/24/12) PERMIT No:'2110550 09/22/11 PJC DRLG DRAFT CORRECTIONS API No: 50-029-20921-01 10/12/11'CJNV PJC GLV C/O(09/26/11) Sec.32,T12N, R13E, 1228'FSL&1801'FWL 10/12/11 SRLV PJC ADPERFS(10/6-7/11) 10/12/11 SRD+PJC MAX ANGLE(09/28/11) BP Exploration(Alaska) bp Date 12-01-2011 Transmittal Number:93220 RECEIVED BPXA WELL DATA TRANSMITTAL Enclosed are the materials listed below. DEC 0 i 2011 (BPXA FIELD LOG DATA) M . . . If you have any questions, please contact Doug Dortch at the PDC at 564-4973 Delivery Contents 1 CD-ROM Containing Field Log Data & Electronic Log Prints for the following wells: R-12A 2-Nr 065 I L Y, Z-113 2L‘•els i % o5() Z-113PB1 04" L'I 6..w4L Please Sign and turn one copy of this transmittal. Thank You, Doug Dortch Petrotechnical Data Center Attn: State of Alaska - AOGCC Attn: Christine Shartzer 333 W. 7th Ave, Suite 100 Anchorage, Alaska 99501 Petrotechnical Data Center LR2-1 900 E.Benson Blvd.PO Box 196612 Anchorage,AK 99519-6612 STATE OF ALASKA ALASKr,OIL AND GAS CONSERVATION COMMISSION WELL COMPLETION OR RECOMPLETION REPORT AND LOG la. Well Status: ®Oil 0 Gas 0 SPLUG 0 Other 0 Abandoned 0 Suspended lb. Well Class: 20AAC 25.105 20AAAC 25.110 ® Development. 0 Exploratory 0 GINJ 0 WINJ 0 WAG 0 WDSPL 0 Other No.of Completions One 0 Service 0 Stratigraphic 2. Operator Name: 5.Date Comp.,Susp.,or Aband.: 12. Permit to Drill Number: BP Exploration(Alaska)Inc. 10/7/2011 211-055 3. Address: 6.Date Spudded: 13. API Number: P.O. Box 196612,Anchorage,Alaska 99519-6612 8/23/2011 50-029-20921-01-00 4a. Location of Well(Governmental Section): 7.Date T.D.Reached: 14. Well Name and Number: Surface: 9/11/2011 PBU R-12A ' 1228'FSL, 1801'FWL, SEC.32,T12N, R13E, UM • 8. KB(ft above MSL): - 48.78' 15.Field/Pool(s): Top of Productive Horizon: 3662'FNL,3152'FWL,SEC.05,T11N, R13E, UM GL(ft above MSL): ,. 21.94' Prudhoe Bay Field/Prudhoe Bay Total Depth: 9.Plug Back Depth(MD+TVD): Oil Pool • 3812'FNL,3323'FWL,SEC.05,T11N, R13E, UM 11355' 9033' 4b. Location of Well(State Base Plane Coordinates,NAD 27): 10.Total Depth(MD+TVD): 16. Property Designation: Surface: x- 635440 • y- 5977712 ' Zone- ASP4 11440' . 9075' . ADL 028279&028282 TPI: x- 636895 y- 5972847 Zone- ASP4 11.SSSV Depth(MD+TVD): 17. Land Use Permit: Total Depth:x- 637069 y- 5972701 Zone- ASP4 None 18.Directional Survey: ®Yes ❑No 19.Water depth,if offshore: 20. Thickness of Permafrost(ND): (Submit electronic and printed information per 20 AAC 25.050) N/A ft MSL 1900'(Approx.) \21.Logs Obtained (List all logs here and submit electronic and printed information per 20 AAC 25.071): 22. Re-DrillLateral Top Window MD/IVD: DIR/GR/RES/PWD 6515' 5559' 23. CASING,LINER AND CEMENTING RECORD SETTING DEPTH MD SETTING DEPTH ND HOLE AMOUNT CASING WT.PER FT. GRADE TOP BOTTOM ToP BOTTOM SIZE CEMENTING RECORD PULLED 20"x 30" Insulated Conductor Surface 110' Surface 110' 36" 8 cu vds Concrete 13-3/8" 72# L-80 Surface 2694' Surface 2693' 17-1/2" 3767 cu ft Permafrost II 9-5/8" 47# L-80 Surf-ce 6515' Surface 5559' 12-1/4" 1380 cu ft'G',575 cu ft'G',130 cu ft PF'C' & 800 cu ft'G' 7" 26# L-80 31' 10444' 31' 8508' 8-1/2" 483 cu ft Class'G' 4-1/2" 12.6# 13Cr85 10249' 11438' 8327' 9074' 6-1/8" 185 cu ft Class'G' 24. Open to production or injection? ®Yes 0 No 25. TUBING RECORD If Yes,list each interval open SIZE DEPTH SET(MD) PACKER SET(MD/TVD) (MD+ND of Top&Bottom;Perforation Size and Number): 2-7/8"Gun Diameter,6 spf 3-3/8"Gun Diameter,6 spf 4-1/2", 12.6#, 13Cr85 10254' 10131'/8217' MD ND MD TVD 11291'-11293' 9002'-9003' 11293'-11303' 9003'-9008' 26. ACID,FRACTURE,CEMENT SQUEEZE,ETC. DEPTH INTERVAL(MD) AMOUNT AND KIND OF MATERIAL USED �'`?-1).:11--'i 2200' Freeze Protected w/74 Bbls of Diesel 27. ' - PRODUCTION TEST Date First Production: Method of Operation(Flowing,Gas Lift,etc.): October 21,2011 Gas Lift Date of Test: Hours Tested: Production For OIL-BBL: GAS-MCF: WATER-BBL: CHOKE SIZE: GAS-OIL RATIO: 10/21/2011 10 Test Period 4 232 642 _ 293 95° 2,762 Flow Tubing Casing Press: Calculated OIL-BBL: GAS-MCF: WATER-BBL: OIL GRAVITY-API(CORR): Press. 160 1,500 24-Hour Rate♦ 557 1,540 702 25.5° 28. CORE DATA Conventional Core(s)Acquired? 0 Yes ®No • Sidewall Core(s)Acquired? 0 Yes ®No ' If Yes to either question,list formations and intervals cored(MD+TVD of top and bottom of each),and summarize lithology and presence of oil,gas or water (submit separate sheets with this form,if needed). Submit detailed descriptions,core chips,photographs and laboratory analytical results per 20 MC 250.071. None EC E I VEDA RBDMS NOV 0 4 2011V � �v 201' Form 10-407 Revised 12/2009 CONTINUED ON REVERSE Alaska OH&Gas Cons.Co ° „ Submit Original Only. M42 ''1 cc '%`1' 29. GEOLOGIC MARKERS(List all formations ar rkers encountered): 30. FORMATION TESTS NAME MD TVD Well Tested? 0 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. Sag River 10444' 8508' None • Shublik 10493' 8553' Sadlerochit 10568' 8618' 42SB/Zone 4A 10658' 8688' Top CGL/Zone 3 10800' 8775' Base CGU Zone 2C 10975' 8852' 23SB/Zone 2B 11070' 8897' 22TS 11180' 8949' 21 TS/Zone 2A 11310' 9011' Formation at Total Depth(Name): 21 TS/Zone 2A 11310' 9011' 31.List of Attachments: Summary of Daily Drilling Reports,Well Schematic Diagram,Surveys 32.I hereby certify that the foregoing is true and correct to the best of my knowledge. /03)j( Signed: Terrie Hubble �� j�n� , Title: Drilling Technologist Date: I ' PBU R-12A 211-055 Prepared By Name/Number. Tenie Hubble,564-4628 Well Number Permit No./Approval No. Drilling Engineer: Takahiro Kosaka,564-5994 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-Altemating-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 TREE= CIW SI 'NOTES: ***4-1/2"CHROME LNR&TBG WELLHEAD= ACTUATOR= BAK RC�C 12A *** OPEN TO FORMATION @ 9-5/8"WINDOW KB. ELEV = 55.29' BF.ELEV = 21.94' I • I KOP= 2900' ♦ ♦41 ♦ ♦t Max Angle= 66"@ 10897' .0 iid 1950' —9-5/8"HES ES CEMENTER, ID=7.00" Datum MD= 10969' a •i Datum TV D= 8800'SS �� 2009' —9-5/8"BKR ECP, ID=8.720" 2 9-5/8"CSG,474,L-80 HYDRIL 563, ID=8.681" — 2030' ♦ ♦• 4 2021' —14-1/2"HES X NIP, ID=3.813" 9-5/8"BKR BOWEN CSG PATCH, ID=9.860" — 2030 -2034' r 0 2598' —9-5/8"DV PKR 13-3/8"CSG,724,L-80, ID=12.347" — 2695' — GAS LIFT MANDRELS ST MD TVD DEV TYPE VLV LTCH PORT DATE 9-5/8"WHIPSTOCK (08/22/11) — 6515' L I 'r 5 3421 3386 28 KBG2 DOME BEK 16 09/26/11 II�I1 4 5982 5214 49 KBG2 SO BK 20 09/26/11 9-5/8"CSG,47#, L-80 BUTT, ID=8.681" — —6515 3 8338 6589 41 KBG2 DMY BK 0 09/14/11 9-5/8" EZSV(08/21/11) —I 6537' 2 9576 7701 22 KBG2 DMY BK 0 09/14/11 1 10025 8119 22 KBG2 DMY BK 0 09/14/11 Minimum ID = 3.725" @ 10242' 4-1/2" HES XN NIPPLE MILLOUT WINDOW(R-12A) 6515'-6532" s. l' 10101' —14-1/2"HES X NIP, ID=3.813" • Z 10131' J—17"X 4-1/2"HES TNT PKR, ID=3.856" 10165' —4-1/2"HES X NIP, ID=3.813" 10242' —14-1/2"HES XN NIP, ID=3.725" 10249' —17"X 5"BKR ZXPN LTP w/10'TBS, ID=4.190" 4-1/2"TBG,12.6#,13CR-85 VAM TOP — 10254' � 10254' —4-1/2"WLEG, ID=3.958" 0152 bpf, ID=3.958" _JTA ELMD NOT LOGGED 7"LNR,26#,L-80 TCII XO TO L-80 BTC --I 10317' 1---).< X 10266' �7"X 5"BKR FLEX-LOCK LNR HGR, ID=4.210" 10275' —15"X 4-1/2"XO,ID=3.920" 7"LNR,26#,L-80 BTC, .0383 bpf, ID=6.276 --I 10444' PERFORATION SUMMARY REF LOG: IANGLE ATTOP PERF: 61° @ 11291' L INote: Refer to Production DB for historical pert data SIZE SPF INTERVAL Opn/Sqz DATE r 2-7/8" 6 11291 - 11293 0 10/07/11 3-3/8"s 6 11293- 11303 0 10/06/11 L.-- • PBTD — 11355' :♦:♦:♦ 4-1/2"LNR, 12.6#, 13CR-85 VAM TOP, 11438' ♦•♦••, .0152 bpf, ID=3.958" �� � DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 03/18/83 N26E ORIGINAL COMPLETION 10/19/11 DGD/PJC FINAL DRLG CORRECTIONS WELL: R-12A 09/15/11 N7ES SIDETRACK(R-12A) PERMIT No: 2110550 09/22/11 PJC DRLG DRAFT CORRECTIONS ‘, API No: 50-029-20921-01 10/12/11 CJN/PJC GLV 0/0(09/26/11) Sec.32,T12N, R13E, 1228'FSL&1801'FWL 10/12/11 SRD/PJC ADPERFS(10/6-7/11) 10/12/11 SRD/PJC MAX ANGLE(09/28/11) BP Exploration (Alaska) BP AMERICA Leak-Off Test Summary Well Name: R-12A Surface Leak Off Test Test Test Depth Test Depth AMW Pressure Pressure EMW Date Type (TMD-Ft) (TVD-Ft) (ppg) (psi) (BHP) (psi) (ppg) 09/09/11 FIT 10,444.00 8,508.00 8.60 690.00 4,491.00 10.16 Page 1 of 1 North America -ALASKA- BP Page 1 of 46 Operation Summary Report Common Well Name: R-12 AFE No ' •yp (RON) Site:PB R Pad X3-00YT9-C(5,866,360.00) Event Type: RE-ENTER-ONSHOREStart Date: 8/6/2011 End Date:9/12/2011 Protect:Prudhoe Bay Rig Name/No.:NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. II UWI: Active Datum: R-12©55.29ft(above Mean Sea Level) Date From-To Hrs Task j Code ! NPT NPT Depth Phase Description of Operations (hr) (ft) 8/6/2011 09:00 - 12:00 3.00 MOB P PRE RIG DOWN AND PREPARE TO MOVE TO R-12A. LOWER DERRICK. -MOVE SUB OFF OF WELL. -START MOVING PIT MODULE AND SATELLITE CAMP TO R PAD. 12:00 - 15:00 3.00 MOB P PRE INSPECT DERRICK AND SUB. NOV PERFORMING AN INSPECTION OF SUB AND DERRICK. -CONTINUE MOVING PIT MODULE AND SATELLITE CAMP TO R PAD. 15:00 - 18:00 3.00 BOPSUR P PRE THE N2 BACKUP SYSTEM WAS TESTED. -DURING THE TEST THE HYDRAULIC RESERVOIR TANK ON THE ACCUMULATOR FAILED AND RELEASED HYDRAULIC FLUID. -AN INVESTIGATION IS PENDING. -BP SAFETY AND NABORS SAFETY ONSITE. 18:00 - 23:00 5.00 BOPSUR P PRE TNIPPLE DOWN THE BOP STACK COMPONENTS. -SEND COMPONENTS IN FOR INSPECTION. 23:00 - 00:00 1.00 MOB P PRE PREPARE RIG TO MOVE TO R-12A. 8/7/2011 00:00 01:30 1.50 MOB P PRE PREP RIG FOR MOVING DOWN SPINE ROAD. TOOL SERVICE PLACING RIG MATS ON SPINE ROAD. 01:30 - 08:00 6.50 `MOB P PRE SUB MOVING ON SPINE ROAD TO R PAD. -STAGED ON SANTE FE PAD 08:00 - 23:30 15.50 MOB P PRE WAITING ON SANTE FE PAD FOR MATS TO BE LAID ON SPINE ROAD -GENERAL HOUSEKEEPING ON SUB -REMOVE ACCUMULATOR RESEVOIR TANK FOR REPAIRS 23:30 - 00:00 0.50 MOB P ! PRE MOVE FROM SANTE FE PAD ON SPINE ROAD TOWARDS J PAD 8/8/2011 00:00 - 03:00 3.00 MOB P PRE MOVE FROM SANTE FE PAD ON SPINE ROAD TO J PAD -STAGE ON J PAD WAIT FOR MATS TO BE LAID 03:00 - 06:00 3.00 MOB P PRE WAIT ON MATS 06:00 - 00:00 18.00 MOB P PRE MOVE FROM J PAD TO R PAD ACCESS ROAD -LEAP FROG MATS ON R PAD ACCESS ROAD 8/9/2011 00:00 - 04:00 4.00 MOB P PRE CONTINUE RIG MOVE FROM DS 13 TO R PAD -MOVE FROM J PAD TO R PAD ACCESS ROAD. LEAP FROG SINGLE MATS. BEND RIG MATS AND SINK INTO TO SOFT SECTION OF ACCESS ROAD APPROXIMATELY 1/4 MILE IN FROM SPINE RD. -PLACE PLYWOOD TO SHIM DAMAGED MATS. UNABLE TO PROGRESS RIG OUT OF HOLE. 04:00 - 17:00 13.00 MOB N WAIT PRE RIG UP(2)PEAK SOW TRUCKS TO ASSIST PULLING RIG OUT OF ROAD DEPRESSION. -UNABLE TO PROGRESS RIG FORWARD. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 2 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 8/6/2011 End Date: 9/12/2011 X3-00YT9-C(5,866,360.00) Project: Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 17:00 - 18:00 1.00 MOB N WAIT r_ PRE RIG UP(2)PEAK CATERPILLAR D8 TRACTORS TO FRONT OF SUB TO ASSIST IN PULLING RIG OUT OF SOFT AREA. -CAT D8 TRACTORS SUCCESSFUL AT PULLING RIG OUT OF ROAD DEPRESSION. 18:00 - 00:00 6.00 MOB N WAIT i PRE CONTINUE TO MOVE DOWN R PAD ACCESS , ROAD. I -LEAP FROG DOUBLE STACKED MATS. 8/10/2011 00:00 - 00:00 24.00 MOB N WAIT PRE CONTINUE RIG MOVE FROM DS 13 TO R PAD 1. -LEAP FROG DOUBLE STACKED MATS TO { PROGRESS DOWN R PAD ACCESS ROAD. 8/11/2011 00:00 - 22:00 22.00 MOB I N WAIT PRE CONTINUE RIG MOVE FROM DS 13 TO R PAD. STAGE RIG ON PAD. -LEAP FROG DOUBLE STACKED MATS TO PROGRESS DOWN R PAD ACCESS ROAD. 22:00 - 00:00 2.00 MOB P PRE NIPPLE UP BOP COMPONENTS AND SETBACK ON STUMP IN RIG CELLAR. -7ES BOP STACK SENT IN FOR ANNUAL MAINTENANCE. 9ES BOP STACK NOW IN l1 IUSE. -CONTINUED ON 8/12/2011 REPORT 8/12/2011 00:00 - 15:00 15.00 BOPSUR P • PRE CONTINUE TO NIPPLE UP BOP COMPONENTS 1 1 AND SETBACK ON STUMP IN RIG CELLAR. -7ES BOP STACK SENT IN FOR ANNUAL MAINTENANCE. 9ES BOP STACK NOW IN iUSE. I-FLUSH NITROGEN FROM ACCUMULATOR UNIT AND HOSES WITH NEW HYDRAULIC FLUID I-INSTALL 3-1/2"X 6"VBRS IN BOTTOM RAMS 1 -INSTALL 7"TOP PIPE RAMS -PLACE RIG MATS AROUND CELLAR 15:00 17:30 1 2.50 MOB P PRE SPOT RIG OVER WELL. -WH&TREE PRESSURES: T/I/O=0 PSI. 2000 PSI MIT-OA IN JUNE 2011 PASSED. -ALL PRE-RIG WORK CONFIRMED COMPLETE. 6-3/8"CAMERON TYPE J BPV SET AND TESTED FROM BELOW ON 7/18/2011. -WSL WITNESS RIG SPOTTING. -DROP PLUMB LINE FROM ROTARY TABLE TO CENTER OVER WELL. COVER RIG MATS W/HERCULITE LINER. -SPRAY IN LINER PRESENT IN WELL CELLAR BOX. -15:00 HRS: NOTIFY AOGCC STATE REP, :CHUCK SCHEVE,OF INTENTION TO BEGIN BOP TEST @ 15:00 ON 8/13/2011 (24 HOURS NOTICE). 17:30 - 18:30 1.00 RIGU P PRE SPOT PIT MODULE NEXT TO RIG SUB AND 1 RIG UP CONNECTIONS. • -SET CUTTINGS BOX. SPOT 500 BBL FLOWBACK TANK AND RIG UP HARDLINE FROM TANK TO CELLAR AREA. • PRESSURE TEST SAME. 18:30 - 19:00 0.50 RIGU P PRE 'RAISE DERRICK 19:00 - 21:00 2.00 i RIGU P 1 PRE RIG UP RIG FLOOR 1 -BRIDLE DOWN AFTER RAISING DERRICK -RIG UP BLOCKS TO TOP DRIVE. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 3 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/6/2011 End Date:9/12/2011 X3-00YT9-C(5,866,360.00) Project:Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES 1 Spud Date/Time: Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum:R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) ' (ft) 21:00 - 00:00 3.00 RIGU P PRE GENERAL RIGUP OPERATIONS. RECEIVE I TWO TRUCK LOADS(580 BBL)OF 160 DEG F 9.8 PPG BRINE. ***ACCEPT N7ES RIG AT 21:00 HRS 8-12-2011 8/13/2011 00:00 - 00:30 0.50 RIGU P PRE CONTINUE GENERAL RIGUP OPERATIONS. 00:30 - 01:00 0.50 RIGU P PRE HOLD RIG EVACUATION DRILL WITH ALL 1 i PERSONNEL ON LOCATION. CONDUCT AAR 1 ON DRILL AND HOLD PRE-SPUD MEETING. —i - 01:00 - 02:00 1.00 RIGU ' P PRE CONTINUE GENERAL RIGUP OPERATIONS. -INSTALL DOUBLE FULL OPENING VALVES ON IA AND OA WORKING SIDES. -PRESSURE TEST INSTALLED VALVES TO 3500 PSI HIGH FOR 5 MIN. ' -NON WORKING IA&OA OUTLETS EACH HAVE TAPPED BLIND FLANGES WITH PLUGS. 02:00 - 04:00 2.00 WHSUR P 1 DECOMP PULL CAMERON TYPE J 6-3/8"BPV WITH VALVE SHOP LUBRICATOR. -PRESSURE TEST LUBRICATOR TO 250 PSI LOW AND 3500 PSI HIGH FOR 5 MIN EACH. -PULL BPV AND LAYDOWN LUBRICATOR. 04:00 - 06:30 2.50 KILLW P 1 DECOMP HOLD PJSM. CIRCULATE OUT FREEZE PROTECTION DIESEL FLUIDS WITH 160 DEG • . I 9.8 PPG BRINE. -ALL RETURNS LINED UP TO FLOWBACK TANK. FLUIDS SENT TO HYDROCARBON RECYCLE @ GC-2. i -LINEUP ON IA AND REVERSE OUT 19 BBLS (500')OF DIESEL @ 3 BPM,225 PSI FROM THE !TUBING. PUMP 10 BBLS EXTRA 9.8 PPG BRINE TO COMPLETELY CLEANOUT DIESEL. -SWAP LINES AND CIRCULATE OUT 13 BBLS (500')OF DIESEL @ 3 BPM,195 PSI FROM THE I IA. PUMP 10 BBLS EXTRA 9.8 PPG BRINE TO COMPLETELY CLEANOUT DIESEL. 1 06:30 08:00 1.50 BOPSUR I P ' DECOMP PRESSURE TEST SECONDARY KILL LINE ON RIG(ANNUAL CERTIFICATION TEST)TO 5000 tPSI 08:00 - 10:00 2.00 WHSUR P DECOMP SET 6-3/8"CIW TYPE J TWC WITH WELLS SUPPORT VALVE SHOP LUBRICATOR. -MIRU VALVE SHOP. PRESSURE TEST LUBRICATOR TO 250 PSI LOW AND 3500 PSI HIGH FOR 5 MIN EACH AFTER RU. , -PRESSURE TEST TWC FROM ABOVE TO 250 PIS LOW AND 3500 PSI HIGH FOR 5 MIN EACH (PASS). -PRESSURE TEST TWC FROM BELOW TO ' i 1 250 PSI LOW AND 2000 PSI HIGH FOR 5 MIN I EACH(PASS). -RDMO VALVE SHOP. - 10:00 - 12:00 1 2.00 WHSUR P E DECOMP NIPPLE DOWN 7-1/6"X 6-3/8"BORE MCEVOY TREE AND 13-5/8"X 7-1/16"5K MCEVOY(5) SEAL TBG ADAPTER. 12:00 - 12:30 0.50 1 WHSUR P DECOMP HOLD PRE-SPUD MEETING WITH - AFTERNOON CREW. 12:30 - 14:30 , 2.00 WHSUR P DECOMP CONTINUE TO NIPPLE DOWN TREE. -7"IJ4S XO CONFIRMED TO THREAD INTO HANGER,6 TURNS,9"STICKUP. -LDS MEASUREMENTS CONFIRMED. 3-5/8" WHEN SCREWED IN,4-1/8"OUT. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 4 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/6/2011 End Date:9/12/2011 X3-00YT9-C(5,866,360.00) Project:Prudhoe Bay Site: PB R Pad i Rig Name/No.: NABORS 7ES Spud Date/Time: I Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum:R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code. NPT NPT Depth Phase Description of Operations (hr) (ft) 14:30 - 17:00 T 2.50 ! BOPSUR P I DECOMP NIPPLE UP BOPE. -13-5/8"GK HYDRIL STACK CONSISTS OF FOLLOWING: -ANNULAR PREVENTER(NEW RUBBER ELEMENT) -7"UPPER PIPE RAMS • -BLIND/SHEAR RAMS -CHOKE AND KILL LINE FLOW CROSS,(1) INNER 3-1/8"MANUAL VALVE EACH LINE,(1) F OUTER 3-1/8"HCR VALVE EACH LINE. -3-1/2"X 6"VB LOWER RAMS 1 -SPACER SPOOL WITH TWO BLINDED SIDE OUTLETS. -FUNCTION TESTED EMERGENCY SHUT DOWNS ON RIG. -LOAD DRILLPIPE IN PIPE SHED. 17:00 - 17:30 , 0.50 BOPSUR P DECOMP RIG EVACUATION DRILL AND AAR WITH ALL PERSONNEL ON LOCATION. 17:30 - 20:00 2.50 BOPSUR P DECOMP CONTINUE TO NIPPLE UP BOPE AND PREPARE FOR BOPE TESTING. -PERFORM WELL CONTROL DRILL. CIRCULATE THROUGH CHOKE MANIFOLD • AND MUD-GAS SEPARATOR. CONFIRM SEPARATOR VENT LINE OPEN WITH STEAM. J -FUNCTION NEW ANNULAR PREVENTER • I t ELEMENT TO EXERCISE. FUNCTION ALL — -- RAMS ON STACK. —� — l- Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 5 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/6/2011 End Date:9/12/2011 X3-00YT9-C(5,866,360.00) Project Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs I Task Code NPT NPT Depth ' Phase Description of Operations (hr) (ft)_ 20:00 - 00:00 4.00 BOPSUR P 1 DECOMP PRESSURE TEST BOPE PER AOGCC REGULATIONS AND BP ADWOP. CHUCK SCHEVE,AOGCC REPRESENTATIVE,ON LOCATION TOWiffinSTESTINGTALL TESTS WITNESSED BY BP WSL AND NABORS TOOLPUSHER(SEE ATTACHED SIGNED PRESSURE CHARTS AND TEST REPORT). I 24 HOUR NOTICE WAS PROVIDED TO AOGCC AT 15:00 ON 8/12/11. -PRESSURE TEST FOLLOWING COMPONENTS TO 250 PSI LOW AND 3500 PSI HIGH FOR 5 MINUTES EACH. -TESTED ALL CHOKE MANIFOLD VALVES I (16 TOTAL)+CHOKE/KILL LINES -MANUAL CHOKE AND MANUAL KILL LINE VALVES. -HCR CHOKE AND HCR KILL VALVES (CLOSING TIME BOTH VALVES= 1 SEC) • -4"&4-1/2"FULL OPENING SAFETY VALVES. -4"DART VALVE. i -TOP DRIVE AIR ACTUATED IBOP. • -LOWER MANUAL IBOP ON TOP DRIVE. • -BLIND/SHEAR RAMS(CLOSING TIME= 15 SEC) -UPPER 7"RAMS WITH 7"TEST JOINT 1(CLOSING TIME ON=7 SEC) -LOWER 3-1/2"X 6"VBRS WITH4"&5-1/2" i TEST JOINTS(CLOSING TIME ON 4"&5-1/2" ` i TEST JTS=7 SEC FOR BOTH) I -TEST THE ANNULAR PREVENTER WITH '4"TEST JOINT(CLOSING TIME ON 4"TEST JOINT= 19 SEC) -TEST THE HYDRAULIC SUPER CHOKE AND MANUAL BEAN CHOKE. -1500 PSI HIGH FOR 5 MIN. I-PERFORMED AN ACCUMULATOR DRAWDOWN TEST. i I -STARTING ACCUMULATOR PRESSURE= 3025 PSI -FINAL PRESSURE AFTER FUNCTIONING • I ALL PREVENTERS AND TWO HCRS= 1600 PSI ' -12 SEC TO BUILD 200 PSI TO 1800,92 SEC TO FULL 3025 PSI PRESSURE. -5 NITROGEN BACKUP BOTTLES WITH 1850 PSI. -CALIBRATED AND TESTED THE SIERRA GAS MONITORING SYSTEM DURING INITIAL MIRU. -PRESSURE TESTING CONCLUDED ON 8/14/2011. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 6 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type:RE-ENTER-ONSHORE(RON) Start Date:8/6/2011 End Date:9/12/2011 X3-00YT9-C(5,866,360.00) i Project: Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum:R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) t 8/14/2011 00:00 - 02:00 2.00 BOPSUR P DECOMP I CONTINUE PRESSURE TEST BOPE PER AOGCC REGULATIONS AND BP ADWOP. CHUCK SCHEVE,AOGCC REPRESENTATIVE, I ON LOCATION TO WITNESS TESTING. ALL TESTS WITNESSED BY BP WSL AND NABORS TOOLPUSHER(SEE ATTACHED SIGNED PRESSURE CHARTS AND TEST REPORT). -SEE TESTING EVENT DESCRIPTION ON I I8/13/2011 REPORT(20:00-00:00 TIME I ( INTERVAL). TOTAL BOPE TEST=6 HOURS. I ` I -PRESSURE TESTED CHOKE&KILL LINES TO 5000 PSI FOR 10 MIN(ANNUAL CERTIFICATION TEST). TEST MUD LINE& i MANIFOLD TO 5000 PSI FOR 10 MIN. -NEXT BOPE TEST DUE ON 8/21/2011 (7 DAY TEST INTERVAL). 02:00 - 04:00 2.00 WHSUR P I ! DECOMP PULL 6-3/8"CIW TYPE J TWC WITH WELLS SUPPORT VALVE SHOP LUBRICATOR. -MIRU VALVE SHOP. PRESSURE TEST • LUBRICATOR TO 250 PSI LOW AND 3500 PSI HIGH FOR 5 MIN EACH AFTER RU. -PULL TWC AND RDMO VALVE SHOP. 04:00 - 06:30 2.50 PULL P , DECOMP RIG UP TO PULL AND LAYDOWN 7"X 5-12" TUBING. • -PULL DUTCH RISER. INSTALL BELL NIPPLE. -RIG UP DOUBLE STACK TONGS(8-5/8"HS), BAILS AND ELEVATORS. -ENSURE PROPER CROSSOVERS IN PLACE FOR FOSV WHILE PULLING TUBING. 06:30 - 07:30 1.00 PULL P DECOMP UNSEAT AND PULL TUBING HANGER TO THE RIG FLOOR. I-MAKE UP JOINT OF DRILLPIPE WITH 7"IJ4S XO TO TUBING HANGER AND TOP DRIVE. :-CAMERON REP ON LOCATION TO BACKOUT j : I LOCK DOWN SCREWS ON TUBING SPOOL. -PULL TUBING HANGER TO RIG FLOOR. i I ! -30K OVERPULL WAS REQUIRED TO UNSEAT THE HANGER(PU WEIGHT= 175 KLBS). -INITIAL FREE UP WEIGHT= 145K LBS. 07:30 - 09:30 2.00 PULL P DECOMP CIRCULATE 30 BBL SAFE-SURF-O PILL ',ROUND TRIP. CHASE PILL WITH 435 BBL ' I I HOLE VOLUME @ 6 BPM,220 PSI. -MEASURE SLOW PUMP RATES @ 6625'MD, 5633'TVD,9.8 PPG BRINE,09:30: i -MP1: 2 BPM=43 PSI,3 BPM=73 PSI -MP2: 2 BPM=40 PSI,3 BPM=60 PSI -WELL STABLE PRIOR TO TOH. • 09:30 - 10:00 0.50 PULL P • DECOMP SERVICE TOP DRIVE. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 7 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 8/6/2011 End Date:9/12/2011 X3-00YT9-C(5,866,360.00) Project: Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum: R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) F10:00 19:30 9.50 PULL PI DECOMP 7"PULL ,26#, L-80 IJ4S X 5-1/2", 17#,L-80 TUBING STRING FROM JET CUT @ 6625 MD PLAN FOR NON-SHEARABLES DISCUSSED IN PJSM SLB CAMCO SPOOLING DUAL CONTROL LINES ON 7"TUBING DOWN TO SSSV NIP @ 300'MD. -RECOVER 38 SS BANDS AND 2 CLAMPS ON CONTROL LINES(MIDDLE OF EVERY OTHER JOINT). USE AIR GUN CHISEL TO REMOVE. -RECOVER 77 JOINTS 7"TBG,90 JTS 5-1/2" TBG,2 GLMS,1SSSV NIPPLE. -CORRECT HOLE FILL FOR PIPE DISPLACEMENT TRACKED ON TRIP SHEET. -OVERALL CONDITION OF TUBING=OK, NOTHING OF NOTE. -LENGTH OF CUT JOINT=39.9', FLARE OD= 6-1/4",CONDITION OF CUT=GOOD. I -HELD KICK WHILE TRIPPING DRILLS AND AARS TO DISCUSS -WSL CONDUCT WELL CONTROL AUDIT. -TBG AND TREE NORM CONTAMINATED. 19:30 - 20:00 0.50 PULL � P 1 ' DECOMP RIG DOWN AND CLEAN RIG FLOOR AFTER I PULLING TUBING. 20:00 - 20:30 0.50 WHSUR P ' I DECOMP INSTALL WEAR BUSHING. 20:30 - 23:00 2.50 CLEAN P ,1 DECOMP MAKEUP AND RIH WITH CLEANOUT BHA. -PJSM WITH BAKER FISHING REP 1 i-NOTABLE COMPONENTS OF BHA: -8-1/2"USED MILL TOOTH ROLLER CONE BIT iI -(3)7"JUNK BASKETS 1 -BIT SUB 1 -8-1/2"OD WATERMELON MILL -MECHANICAL JARS(BUMPER SUB) -(9)6-1/4"STEEL SPIRAL DRILL COLLARS -BHA OAL=307.46',TOTAL WEIGHT=8 I KLBS, MIN ID=MELON MILL,2-1/4" '.23:00 - 00:00 1.00 CLEAN P DECOMP PU 4"DRILLPIPE&TIH WITH CLEANOUT BHA TO 950'@ MIDNIGHT. -6000'ADDITIONAL DRILLPIPE TO PU. 'COMPLETE ON 8/15/2011. 8/15/2011 00:00 - 05:30 5.50 CLEAN P DECOMP CONTINUE TO PU 4"DRILLPIPE&RIH F/950' AT MIDNIGHT T/6600'MD. CONTINUE IN I HOLE TO TAG 5-1/2"TBG STUMP @ 6620'MD DP MEASUREMENT. SET DOWN 10 KLBS TO TWICE TO CONFIRM. II I-67 STANDS+ 1 SINGLE OF DRILLPIPE I PICKED UP(6.5 HRS) -120/102 KLBS PU/SO WEIGHT SO WEIGHT @ 6600'MD. -ROTATE SLOWLY PAST DV PACKER @ 2598' MD. 05:30 - 07:00 1.50 CLEAN P : DECOMP I CIRCULATE HOLE CLEAN. 1 '-PU TO 6615'MD,5'ABOVE TBG STUMP 1 1PUMP 30 BBL HI-VIS SWEEP S/S @ 12 BPM, 1500 PSI. 07:00 - 07:30 0.50 CLEAN P DECOMP SERVICE TOP DRIVE Printed 9/26/2011 11:36:35AM North America-ALASKA- BP Page 8 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/6/2011 End Date:9/12/2011 X3-00YT9-C(5,866,360.00) Project:Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: 'Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 07:30 - 09:30 2.00 CLEAN P DECOMP POOH F/6615'MDT/SURFACE. -CHECK FOR FLOW ON BOTTOM AND PRIOR TO PULLING THROUGH STACK. WELL STABLE. PULL SLOWLY THROUGH DV PACKER AT 2598'MD. 09:30 - 11:00 1.50 CLEAN P DECOMP LAYDOWN CLEANOUT BHA. CLEANOUT BOOT BASKETS. 1 ADDITIONAL SS BAND RECOVERED(39 TOTAL). 11:00 - 13:00 2.00 EVAL P DECOMP MIRU SLB E-LINE UNIT. -RIGUP WITH AIR LINE WIPER ONLY. NO LUBRICATOR. 13:00 - 13:30 0.50 EVAL P DECOMP SLB E-LINE TIH T/200'MD. SLB UNABLE TO COMMUNICATE WITH DOWNHOLE TOOLS. DECIDE TO TOH AND TROUBLESHOOT. 13:30 - 22:30 9.00 EVAL N DFAL 200.00 DECOMP TROUBLESHOOT E-LINE TOOL ISSUES. -HEAT 9.8 PPG BRINE IN PITS TO 120 DEG F FOR ARCTIC PACK CIRC OUT. -GREASE CHOKE MANIFOLD VALVES. 22:30 - 00:00 1.50 EVAL P DECOMP SLB E-LINE TIH WITH USIT/GR/CCL TOOLS. TIH TO 6570'MD(50'ABOVE 5-1/2"TBG STUB). BEGIN LOGGING OOH. LOG RESULTS DISCUSSED IN NEXT TIME INTERVAL ON 8/16/2011 UPON COMPLETION OG E-LINE LOGGING. 8/16/2011 00:00 - 03:00 3.00 EVAL P DECOMP CONTINUE TO RUN SLB E-LINE USIT LOG F/ 6570'T/SURFACE. 03:00 - 04:00 1.00 EVAL P DECOMP COMPILE LOG INFORMATION AND EVALUATE. -IDENTIFY PLANNED CUT DEPTH FOR 9-5/8" CSG @ 2030'MD -PLAN TO SET BRIDGE PLUG BARRIER @ 2346'MD -PLAN TO SET SQUEEZE PKR BARRIER @ 2230'MD -MINIMAL CMT IN 9-5/8"X OPEN HOLE ANNULUS AROUND PLANNED WINDOW DEPTH @ 6500'MD. 04:00 - 04:30 0.50 DHB P DECOMP MAKEUP BRIDGE PLUG TO SLB E-LINE AND RIH. 04:30 - 07:00 2.50 DHB P DECOMP RIH T/2346'WITH 9-5/8"HES BRIDGE PLUG ON E-LINE. -SET 9-5/8",47#HES FASDRILL BRIDGE PLUG @ 2346'MD. -POOH F/2346'T/SURFACE. BREAKDOWN E-LINE BHA. 07:00 - 07:30 0.50 DHB P DECOMP CLOSE BLIND RAMS AND TEST ABOVE 9-5/8" BRIDGE PLUG FROM ABOVE. PRESSURE TEST TO 250 PSI LOW AND 2300 PSI HIGH(3500 PSI DIFFERENTIAL AT PLUG INCLUDING 9.8 PPG BRINE),5 MIN EACH. 07:30 - 08:00 0.50 DHB P DECOMP RDMO SLB E-LINE. 08:00 - 10:00 2.00 DHB P DECOMP PICK UP HES 9-5/8"SQUEEZE PACKER AND RIH ON DRILLPIPE. -SET 9-5/8",47#HES FASDRILL SQUEEZE PACKER @ 2230'MD. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 9 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/6/2011 End Date: 9/12/2011 X3-00YT9-C(5,866,360.00) Project: Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: I Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum: R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 10:00 - 11:00 1.00 DHB P DECOMP PRESSURE TEST SQUEEZE PACKER. -PRESSURE TEST BELOW SQUEEZE PKR (ABOVE BRIDGE PLUG)TO 250 PSI LOW,2300 PSI HIGH. -RELEASE FROM SQUEEZE PKR AND PU ABOVE SQUEEZE PKR. -PRESSURE TEST ABOVE SQUEEZE PKR TO 250 PSI LOW&2300 PSI HIGH FOR 5 MIN EACH. -BRINE WEIGHT 9.8 PPG IN AND OUT. 11:00 - 13:00 2.00 DHB P DECOMP TOH F/2230'MD T/SURFACE. LAY DOWN SQUEEZE PKR RUNNING TOOL. 13:00 - 14:00 1.00 DHB P DECOMP CHANGE OUT RUNNING TOOL TO FASDRILL SQUEEZE PACKER. 14:00 - 15:00 1.00 DHB P DECOMP TRIP TO 2230'MD.CIRCULATE DP VOLUME OF 26 BBLS AT 240 GPM WITH 200 PSI. UP WEIGHT 55K, DOWN 50K,STING INTO SQUEEZE PACKER WITH 30K DOWN. 15:00 - 17:00 2.00 DHB P DECOMP TEST VOID BETWEEN BP AND SQUEEZE PACKER TO 250 PSI LOW,2300 PSI HIGH FOR 5 MINUTES EACH,CHARTED. FAIUFAIL. RE-TEST THROUGH TOP DRIVE WITH NO SUCCESS. RIG UP HEAD PIN AND TEST SAME.PASSING TESTS.BRINE WEIGHT 9.8 PPG IN AND OUT. 17:00 - 18:00 1.00 DHB P DECOMP POOH FROM 2230'MD. 18:00 - 18:30 0.50 DHB P DECOMP LAY DOWN SQUEEZE PACKER RUNNING TOOL. 18:30 - 19:00 0.50 STCTPL P DECOMP PU/MU 8-1/4"MULTI-STRING CUTTER BHA. 19:00 - 21:00 2.00 STCTPL P DECOMP ''RIH TO 1895'MD. RIG UP BLOWER HOSE. LOCATE COLLAR AT 2008'MD.MOVE DOWN AND LOCATE COLLAR AT 2050'MD.SPACE OUT FOR CUTTING DEPTH AT 2030'MD. UP, DOWN AND RT WEIGHT 52K. ROTATE AT 40 RPM WITH 0.5K TQ. 21:00 - 22:00 1.00 STCTPL P DECOMP SPOT LRS AND RIG UP HOSES AND TEST. 122:00 - 23:30 1.50 STCTPL P DECOMP CUT 9-5/8"CASING AT 2030'MD.PUMP AT 175 GPM WITH 325 PSI ROTATE AT 60 RPM WITH 2.3K TQ.INCREASE PUMP RATE TO 210 GPM WITH 650 PSI.OBSERVED INCREASE IN TORQUE AND ANNULUS PRESSURE.CASING TRAPPED CUTTER DIES DUE TO SHIFT.SHUT DOWN PUMPS.PULL 35K OVER AND TOOL CAME FREE. 23:30 - 00:00 ( 0.50 STCTPL P DECOMP CLOSE ANNULAR,OPEN OA AND ESTABLISH CIRCULATION AT 84 GPM.SHUT DOWN.LAY DOWN SINGLE.RIG UP HEAD PIN AND LRS. 8/17/2011 100:00 - 03:00 3.00 STCTPL P DECOMP PJSM.OPEN ANNULAR PREVENTER.FILL LINES FROM LRS.PRESSURE TEST LINES. DISPLACE DRILL STRING WITH 21 BBLS 120 DEGREE DIESEL.CLOSE ANNULAR PREVENTER.CONTINUE TO PUMP 107 BBLS OF 120 DEGREES DIESEL TO DISPLACE ARCTIC PAC IN 13-3/8"X 9-5/8"ANNULUS. PUMP AT 2 BPM WITH PRESSURE DECREASING FROM 178 PSI TO 70 PSI. CHASE WITH 28 BBLS HEATED HI-VIS SPACER WITH RIG PUMPS TAKING ALL RETURNS TO 500 BBL FLOW BACK TANK. PUMP AT 126 GPM WITH 115 PSI. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 10 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/6/2011 End Date:9/12/2011 X3-00YT9-C(5,866,360.00) Project:Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum:R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 03:00 - 05:00 ' 2.00 STCTPL P -1 DECOMP ALLOW DIESEL IN OA TO SOAK FOR 2 i ;HOURS. 05:00 07:00 2.00 STCTPL P DECOMP PUMP 80 BBL DEEP CLEAN SWEEP FOLLOWED BY HEATED 9.8 PPG BRINE. ' PUMP AT 84 GPM WITH 145 PSI WITH SOAP SWEEP. INCREASE RATE TO 252 GPM WITH 350 PSI.SHUT DOWN.MONITOR WELL.WELL I 1 APPEARS OUT OF BALANCE.CIRCULATE j 1 BOTTOMS UP AT 252 GPM WITH 350 PSI I TAKING RETURNS TO 500 BBL FLOW BACK TANK. 07:00 - 09:00 2.00 STCTPL P DECOMP MONITOR WELL.NO FLOW FROM DRILL STRING.CONTINUE TO SEE INTERMITTENT FLOW AND GAS BREAKING OUT AT I SURFACE. CLOSED OA SHOWING 6 PSI I WHICH IS CALCULATED HYDROSTATIC I PRESSURE FROM STACK. OPEN UP • BLEEDER AND BLEED OFF PRESSURE,SHUT IN AND REPEAT.STILL PRESSURING TO 6 ' ' PSI. BLEED OFF PRESSURE AND OPEN UP ANNULAR.FLUID DROPPED IN STACK AND FLOW SLOWED. 09:00 - 10:00 1.00 STCTPL P DECOMP PJSM. PRESSURE TEST 13.375 X 9.625 OA TO • LOW OF 500 PSI AND HIGH OF 1000 PSI FOR _ 1 30 CHARTED MINUTES-PASS. _ 10:00 - 11:30 1.50 i STCTPL i P I I DECOMP PJSM.OPEN OA TO 500 BBL FLOW BACK TANK.OPEN DRILL STRING TO BLEEDER AND OPEN ANNULAR PREVENTER.OA PRESSURE TO 0.0 PSI.CONTINUE TO SEE DIESEL RETURNS DOWN FLOW LINE FROM U-TUBE. i PUMP 8 BBLS BRINE DOWN DP WHILE DUMPING DIESEL RETURNS. SHUT DOWN AND MONITOR UNTIL NO SIGNS OF FLOW. RIG DOWN CIRCULATING LINES.BRINE WEIGHT IN AND OUT 9.8 PPG. 11:30 - 12:30 1.00 STCTPL P DECOMP PJSM. POOH FROM 2030'MD TO BHA AT 40' MD. 12:30 - 13:00 0.50 STCTPL P DECOMP MONITOR WELL BEFORE PULLING BHA THROUGH STACK.SLIGHT FLOW DUE TO OUT OF BALANCE COLUMN.DECREASED TO NO FLOW. 13:00 - 13:30 0.50 STCTPL P DECOMP PJSM. BREAK AND LD MULTI-STRING CASING CUTTER. 14:00 r 13:30 - 0.50 STCTPL P DECOMP PULL WEAR RING AND RUN IN UPPER TEST j PLUG. 14:00 - 15:30 1.50 WHSUR P DECOMP PJSM.CHANGE UPPER RAMS FROM 7"TO i- 9-5/8". 15:30 - 17:00 1.50 i WHSUR P DECOMP PJSM. RU TEST EQUIPMENT. INSTALL 9-5/8" TEST JOINT. FILL STACK.TEST UPPER RAMS TO 250 PSI LOW,3500 PSI HIGH AS PER I AOGCC AND BP POLICY.CHART BOTH TESTS I I -PASS. LD TEST JOINT AND PULL TEST PLUG. 17:00 - 17:30 ' 0.50 . STCTPL P DECOMP 'PJSM.PU/MU 9-5/8"CASING SPEAR ASSEMBLY. 17:30 - 18:00 0.50 STCTPL P DECOMP RIH WITH SPEAR ASSEMBLY AND ENGAGE 9-5/8"HANGER.BACK OUT LOCK DOWN SCREWS AS PER CAMERON REP. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 11 of 46 Operation Summary Report Common Wet Name: R-12 AFE No Event Type:RE-ENTER-ONSHORE(RON) Start Date:8/6/2011 End Date: 9/12/2011 X3-00YT9-C(5,866,360.00) Project:Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 18:00 - 18:30 0.50 STCTPL P ! DECOMP PULL 9-5/8"HANGER AND CASING FREE WITH 140K. PULL HANGER TO RIG FLOOR AND INSPECT.RUN BACK IN BELOW ROTARY I TABLE IN PREPARATION FOR CIRCULATION. 18:30 19:30 1.00 STCTPL P I 1 DECOMP PUMP SOAP SWEEP SURFACE TO SURFACE. PUMP AT 294 GPM WITH 50 PSI. GAS BREAKING OUT OF BRINE IN 9-5/8"CASING. MONITOR WELL.WELL STATIC. 19:30 - 20:00 0.50 STCTPL P DECOMP PJSM. PULL HANGER TO RIG FLOOR AND DISENGAGE SPEAR. LD DOWN SPEAR ASSEMBLY. 20:00 - 21:00 1.00 STCTPL P I DECOMP RIG UP CASING HANDLING EQUIPMENT. 21:00 - 00:00 ; 3.00 STCTPL P DECOMP BREAK OUT AND LD CASING HANGER.PULL • AND LD 9-5/8",47#, L-80 CASING FROM CUT AT 2030'MD. 8/18/2011 00:00 - 02:00 2.00 STCTPL P DECOMP PJSM. PULL AND LAY DOWN 9-5/8",47#, L-80 CASING FROM CUT AT 2030'MD.TOTAL OF 51 JOINTS AND 1 CUT JOINT OF 21.49' l RECOVERED.CUT WAS IRREGULAR AND I SPILT ON TWO SIDES.SEE ATTACHMENT. 02:00 - 03:00 i 1.00 STCTPL P DECOMP RIG DOWN CASING HANDLING EQUIPMENT. CLEAR AND CLEAN FLOOR. 03:00 - 03:30 0.50 STCTPL P DECOMP PJSM.PU AND MAKE UP 9-5/8"DRESS OFF BHA. 03:30 - 07:00 3.50 STCTPL P DECOMP RIH WITH 9-5/8"DRESS OFF ASSEMBLY ON DP TO TOP OF STUB AT 2032'MD. CIRCULATE BOTTOMS UP EVERY 5 STANDS j TO CLEAR WELLBORE OF ARCTIC PACK. 07:00 - 10:00 11 3.00 ' STCTPL P DECOMP CIRCULATE AT 84 GPM WITH 35 PSI.ROTATE I AT 60 RPM WITH 1.3K TORQUE.UP AND l DOWN WEIGHT 70K.WASH DOWN FROM 2002'TO 2029'MD.WASH DOWN TO 2030'MD. INCREASE PUMP RATE TO 128 GPM WITH 83 PSI. ROTATE AT 60 RPM WITH 4K TORQUE. MILL OFF 2'TO 2032'. SHUT DOWN PULL OFF OF STUB.WORK 3 MORE TIMES WITH NO PUMPS OR ROTATION. 10:00 - 12:30 2.50 STCTPL P DECOMP PUMP 35 BBL HI-VIS SWEEP SURFACE TO SURFACE AT 500 GPM WITH 475 PSI.TAKE SLOW PUMP RATES AT 10:30 HOURS,AT 2032'TVD WITH 9.8 PPG BRINE. BOTH PUMPS:30 SPM/60 PSI,50 SPM/80 PSI. PUMP 35 BBLS SOAP SWEEP SURFACE TO SURFACE. PUMP AT 168 GPM WITH 60 PSI FOR HALF THE HOLE VOLUME TO INCREASE 'SURFACE CONTACT THEN INCREASE PUMPS I 'TO 500 GPM WITH 520 PSI. SHUT DOWN PUMPS.SLIDE OVER 9-5/8"CASING STUB AND SET DOWN 5K WITH NO PROBLEMS. 1 I PULL UP AND MONITOR WELL FOR 10 MINUTES-STATIC.BRINE WEIGHT IN AND OUT 9.8 PPG. 12:30 - 13:30 1.00 STCTPL P 1 DECOMP POOH TO BHA AT 310'. UP AND DOWN WEIGHT 70K. MONITOR WELL FOR 10 MINUTES PRIOR TO PULLING THROUGH STACK-STATIC. 13:30 - 14:30 � 1.00 STCTPL P DECOMP PJSM.LAY DOWN 9-5/8"CASING DRESS OFF ASSEMBLY PER BAKER REPRESENTATIVE. 1 14:30 - 16:30 2.00 CASING P DECOMP RIG UP 9-5/8"CASING HANDLING EQUIPMENT. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 12 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/6/2011 End Date:9/12/2011 X3-00YT9-C(5,866,360.00) Project: Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task j Code NPT NPT Depth Phase Description of Operations (hr) (ft) 16:30 - 17:00 0.50 CASING P DECOMP HOLD PJSM WITH SERVICE PERSONNEL AND RIG CREW FOR RUNNING 9-5/8"CASING. 17:00 - 17:30 0.50 CASING P DECOMP RUN 9-5/8",47#,L-80,HYDRIL 563 CASING TO 200'.TORQUE TO 15,800 FT/LBS. 17:30 - 18:00 0.50 CASING P DECOMP HOLD D1 DRILL.(KICK WHILE TRIPPING) '18:00 - 20:30 2.50 CASING P DECOMP RUN 9-5/8",47#,L-80,HYDRIL 563 CASING TO 1999'.UP WEIGHT 107K,DOWN 106K. 20:30 - 21:30 1.00 CASING P DECOMP CHANGE OUT TO LONG BAILS.MAKE UP HEAD PIN TO SAFETY VALVE AND MAKE UP TO JOINT ON SKATE.MAKE UP JOINT. 21:30 - 22:00 0.50 CASING P DECOMP RUN IN AND TAG 9-5/8"STUB AT 2032'MD. SET DOWN 8K.PICK UP OFF STUB.SLACK OFF AND SLIDE OVER STUB WITH 2'OF SWALLOW TO 2034'.SET DOWN 25K WITH CASING PATCH.PULL UP 30K TO SET GRAPPLE.PULL UP TO 250K TO PULL TEST CASING PATCH.SLACK OFF TO 160K. 22:00 - 22:30 0.50 CASING P DECOMP RIG UP CEMENT HOSE TO HEAD PIN. 22:30 - 23:00 0.50 CASING P DECOMP PRESSURE TEST 9-5/8"CASING PATCH TO ' 250 PSI LOW,1100 PSI HIGH FOR 5 CHARTED I MINUTES EACH-PASS.RESET STROKE • COUNTER.CONTINUE TO PRESSURE UP TO •1300 PSI,HOLD FOR 2 MINUTES.INCREASE I TO 1650 PSI,HOLD FOR 1 MINUTE. INCREASE ' PRESSURE TO 2000 PSI.HOLD FOR 3 MINUTES.BLEED OFF PRESSURE.RESET STROKE COUNTER. PUMP BACK UP TO 2000 PSI WITH SAME STROKES.NO INDICATION OF ECP PACKER INFLATION.HOLD PRESSURE WHILE MAKEING CALL TO TOWN. 23:00 - 00:00 1.00 CASING"-" P DECOMP CONSULT WITH TOWN ON PLAN FORWARD DUE TO PACKER APPARENTLY NOT INFLATING. 8/19/2011 00:00 - 01:00 1.00 CASING P , • j DECOMP PJSM.DECISION MADE TO PROCEED AND TRY TO INFLATE THE PACKER.PRESSURE UP TO 1000 PSI.RESET STROKE COUNTER. INCREASE PRESSURE TO 1500 PSI THEN 2000 PSI THEN 2200 PSI AND 2300 PSI HESITATING EACH STEP.NO PRESSURE DROP OFF TO INDICATE INFLATION.BLEED OFF PRESSURE TO 1000 PSI.RESET STROKE COUNTER.PUMP UP TO 2300 PSI WITH SAME AMOUNT OF STROKES.CONTINUE TO PRESSURE UP TO 2400,2500 AND 2600 PSI. ES CEMENTER OPENED AT 2725 PSI WITH GOOD INDICATION OF CEMENTER OPENING. PIPE JUMPED AND PRESSURE DROPPED OFF. BRING PUMPS UP TO VERIFY FLOW AND FINISH OPENING ES CEMENTER. 01:00 - 02:30 1.50 i CASING P DECOMP RIG UP CEMENTING HEAD.CIRCULATE 9.8 PPG BRINE WHILE HEATING FLUID TO 80 DEGREES. 02:30 - 02:45 0.25 CASING P DECOMP CONTINUE TO CIRCULATE WHILE HOLDING A PJSM FOR PUMPING CEMENT.PIPE REMAINING IN TENSION WITH 165K. 02:45 - 03:00 0.25 CASING P DECOMP BATCH UP 15.8 PPG,CLASS G TAIL,CEMENT SLURRY. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 13 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 8/6/2011 End Date:9/12/2011 X3-00YT9-C(5,866,360.00) Project: Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum: R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 03:00 - 04:30 1.50 CASING P DECOMP START CEMENT AT 03:02 HOURS.PUMP 5 BBLS WATER.SHUT DOWN AND PRESSURE TEST LINES TO 4000 PSI. PUMP 142.4 BBLS CEMENT. SHUT DOWN. KICK OUT PLUG WITH 5 BBLS WATER. DISPLACE CEMENT WITH 135 BBLS 9.8 PPG BRINE AT 6 BPM.GOOD LIFT THROUGH OUT DISPLACEMENT FROM 200 PSI TO 757 PSI.SLOW PUMPS DOWN AT 94 BBLS AWAY TO 3 BPM.OPEN ANNULUS VALVES TO CELLAR, DUMPING FLUID FROM STACK.CONTINUE TO TAKE RETURNS TO CELLAR.SLOW DOWN TO 1/2 BPM WITH 5 BBLS REMAINING. BUMP PLUG WITH 650 PSI. CONTINUE TO PRESSURE UP TO 2087 PSI WHEN CEMENTER SHUT WITH POSITIVE INDICATOR.HOLD PRESSURE FOR CASING TEST FOR 5 MINUTES-PASS. BLEED OFF PRESSURE AND CHECK FOR FLOW-NO FLOW. NOTE:20 BBLS CEMENT RETURNS TO CELLAR. • CIP AT 04:09 HOURS. 04:30 - 06:00 1.50 CASING P ! I DECOMP FLUSH STACK WITH CITRIC ACID PILL. CLEAN OUT CELLAR.CLEAR AND CLEAN • FLOOR. 06:00 - 12:00 6.00 BOPSUR P DECOMP WHILE WAITING ON CEMENT WASH CEMENT FROM ANNULUS FOR INSTALLATION OF NEW CASING HEAD.SUCK OUT 9-5/8"CASING IN PREPARATION FOR CUTTING.CENTER CASING IN STACK. STAGED TOOLS FOR RAM CHANGE. 12:00 - 15:00 3.00 ! BOPSUR P DECOMP PJSM.CHANGE UPPER RAMS TO 3-1/2"X 6" 'VARIABLES AND BOTTOM RAMS TO 2-7/.8"X 5"VARIABLES. 15:00 - 17:00 2.00 BOPSUR P T DECOMP SLACK OFF 9-5/8"CASING HELD AT 157K SINCE CEMENT JOB.NIPPLE DOWN BOP'S FROM TUBING SPOOL.RAISE STACK OFF WELLHEAD. WHSUR P DECOMP 17:00 - 23:00 6.00 PJSM.CAMERON REPRESENTATIVE RIG UP WACH'S CUTTER,FIRST CUT 9-5/8"CASING AND LAY DOWN.CUT LENGTH 31.27'.SET BACK BOP STACK ON PEDESTAL.REMOVE TUBING SPOOL. CUT 13-3/8"CASING AT GROUND LEVEL AND REMOVE OLD CASING WELLHEAD.MAKE FINAL CUT ON 9-5/8" CASING. PERFORM TOP JOB FOR 13-3/8"X 9-5/8"ANNULUS WITH 7 GALLONS OF CEMENT. 23:00 - 00:00 1.00 WHSUR P DECOMP INSTALL NEW 9-5/8", CANH SEAL AND SLIP LOCK WELLHEAD ASSEMBLY. 8/20/2011 00:00 - 01:30 1.50 WHSUR P DECOMP PJSM. INSTALL NEW 9-5/8"X 11"5K, CANH SEAL AND SLIP LOCK WELLHEAD ASSEMBLY. 01:30 - 02:00 0.50 WHSUR P DECOMP PRESSURE TEST CANH SEAL TO 250 PSI LOW,3500 PSI HIGH.TEST FOR 5 CHARTED MINUTES EACH-PASS. 02:00 - 05:00 li 3.00 BOPSUR P DECOMP NIPPLE UP SPACER SPOOL,ADAPTER FLANGE AND BOPE. Printed 9/26/2011 11:36:35AM North America-ALASKA- BP Page 14 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/6/2011 End Date:9/12/2011 X3-00YT9-C(5,866,360.00) Project: Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 05:00 06:00 1 1.00 i BOPSUR P DECOMP RIG UP TEST EQUIPMENT.TEST BOP, BREAKS AND TOP AND BOTTOM RAMS WITH 4"TEST JOINT TO 250 PSI LOW,3500 PSI i HIGH AS PER AOGCC AND BP POLICY. HOLD EACH TEST FOR 5 CHARTED MINUTES- PASS. RIG DOWN TEST EQUIPMENT. 06:00 - 07:30 1.50 CLEAN P DECOMP PJSM. INSTALL WEAR RING WITH 9.125"ID. MAKE UP CEMENT DRILL OUT ASSEMBLY TO 313'. 07:30 - 08:30 1.00 CLEAN P DECOMP RUN IN HOLE WITH DRILL OUT ASSEMBLY. TAG CEMENT AT 1911'MD. UP WEIGHT 67K, DOWN 65K. 08:30 - 10:30 2.00 CLEAN P DECOMP PUMP AT 300 GPM WITH 290 PSI. ROTATE AT 90 RPM WITH 1.7K TORQUE.WEIGHT ON BIT 5K.WASH AND DRILL THROUGH HARD I CEMENT TO 1950'.CONTINUE TO DRILL THROUGH WIPER PLUG AND 15'OF CEMENT jTO 1965'MD.WASH DOWN TO 2005'MD WITH I NO MORE INDICATIONS OF CEMENT OR . CEMENT STRINGERS. UP WEIGHT 67K, DOWN 65K,ROTARY 70K. 10:30 - 11:00 0.50 CLEAN P i DECOMP CIRCULATE 15 BBL HI-VIS SWEEP SURFACE TO SURFACE AT 300 GPM WITH 300 PSI. 11:00 - 13:00 2.00 CLEAN P 1 DECOMP RIG UP TEST EQUIPMENT.TEST CASING TO • 250 PSI LOW FOR 5 CHARTED MINUTES,3500 i PSI HIGH FOR 30 CHARTED MINUTES.HIGH PRESSURE TEST LOST 117 PSI IN FIRST 15 MINUTES AND 41 PSI IN SECOND 15 MINUTES.TOTAL LOSS WAS 4.4 PERCENT- PASS. RECEIVE AUTHORIZATION FROM ETL _ _ I JOHN EGBEJIMBA TO PROCEED. 13:00 - 15:00 j 2.00 {. CLEAN P DECOMP 'RUN IN HOLE AND TAG FASDRILL SQUEEZE PACKER AT 2230'MD. DRILL PACKER AT 293 GPM WITH 335 PSI.ROTATE AT 90 RPM WITH 0.75K TORQUE OFF BOTTOM,1.3K TORQUE 1_ 1_ ON BOTTOM.WEIGHT ON BIT 5K. 15:00 - 15:30 0.50 CLEAN P DECOMP WASH FROM 2230'MD TO 2287'MD. CIRCULATE 15 BBLS HI-VIS SWEEP SURFACE 'TO SURFACE AT 560 GPM WITH 1030 PSI. NOTIFIED AOGCC OF UPCOMING BOP TEST ' AT 15:00 HOURS. BOB NOBLE WITH AOGCC CALLED BACK AT 16:00 HOURS AND WAIVED WITNESS OF TEST. 15:30 - 18:30 3.00 CLEAN P I DECOMP WASH FROM 2287'MD TO 2343'MD.TAG UP 1 I WITH 10K DOWN ON DEBRIS AND FASDRILL 1I BRIDGE PLUG.DRILL UP PLUG TO 2346'MD AT 293 GPM WITH 320 PSI.WEIGHT ON BIT 10K. ROTATE AT 90 RPM WITH 0.84K TORQUE OFF BOTTOM,1.0K TORQUE ON BOTTOM. UP, DOWN AND ROTARY WEIGHTS 75K. 18:30 - 19:30 1.00 CLEAN P DECOMP SLACK OFF FROM 2346'MD TO 2475'MD WITHOUT TAKING WEIGHT. PUMP 20 BBL HI-VIS SWEEP SURFACE TO SURFACE AT 555 GPM WITH 1090 PSI.SHUT DOWN.TAKE SLOW PUMP RATES AT 19:15 HOURS AT 2475' TVD. PUMP#1 2 BPM WITH 30 PSI,3 BPM !WITH 60 PSI. PUMP#2 2 BPM WITH 20 PSI,3 I I I 1 I BPM WITH 60 PSI. BRINE WEIGHT IN AND OUT 9.8 PPG. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 15 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/6/2011 End Date: 9/12/2011 X3-00YT9-C(5,866,360.00) Project:Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum:R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations 19:30 - 21:00 1.50 I CLEAN P ( , DECOMP PULL OUT OF HOLE TO BHA AT 312'MD. UP AND DOWN WEIGHT 45K 21:00 - 22:30 1.50 CLEAN P DECOMP LAY DOWN CEMENT DRILL OUT ASSEMBLY. RECOVERED 1 GALLON DEBRIS FROM BOOT BASKETS. 22:30 - 23:00 0.50 CLEAN P DECOMP FLUSH OUT STACK WITH JETTING TOOL AT 500 GPM WITH 68 PSI. 23:00 - 00:00 1.00 CLEAN P DECOMP PJSM.PICK UP 81/2"STRING MILL AND ADDED TO BHA CLEAN OUT ASSEMBLY AND RUN IN HOLE. 8/21/2011 00:00 - 00:30 0.50 CLEAN P DECOMP PJSM.PICK UP 8 1/2"STRING MILL AND ADD TO CLEAN OUT ASSEMBLY AND RUN IN HOLE. 00:30 - 03:00 2.50 CLEAN P DECOMP RUN IN HOLE TO 1910'MD.MAKE UP BLOWER HOSE.WORK PAST HES ES CEMENTER AT 1950'MD WITH NO PROBLEM. ROTATE AND RECIPROCATE TWICE PAST CASING PATCH AT 2034'MD WITH NO PROBLEMS.CONTINUE TO RUN IN HOLE AND SLIDE PAST DV PACKER AT 2598'MD, NO PROBLEMS. CONTINUE DOWN TO 6500'MD. WORK ACROSS EZSV SETTING DEPTH MINUS 30',4 TIMES WHILE ROTATING AND RECIPROCATING.CONTINUE DOWN TO 6600' MD STAYING OFF OF TUBING STUB. PULL BACK UP TO EZSV SETTING DEPTH AND WORK STRING MILL ACROSS PLUS 30',4 MORE TIMES, ROTATING AND RECIPROCATING. 03:00 - 04:30 1.50 CLEAN P DECOMP rCIRCULATE HI-VIS SWEEP SURFACE TO SURFACE AT 300 GPM WITH 675 PSI. BRINE WEIGHT IN AND OUT 9.8 PPG. 04:30 - 06:30 2.00 CLEAN P DECOMP POOH WITH STRING MILL CLEAN OUT 1 ASSEMBLY TO BHA AT 319'MD.MONITOR WELL BEFORE PULLING INTO BOP. 06:30 - 08:00 1.50 CLEAN P DECOMP PJSM.BREAK AND LAY DOWN STRING MILL CLEAN OUT BHA.CLEAR AND CLEAN FLOOR. 08:00 - 08:30 0.50 CLEAN P DECOMP SERVICE TOP DRIVE. 08:30 - 09:30 1.00 ZONISO N WAIT WEXIT HAD TO WAIT ON SCHLUMBERGER PERSONNEL AND EQUIPMENT TO ARRIVE AT LOCATION.HAD TROUBLE CONTACTING SCHLUMBERGER THROUGH THE PHONE SYSTEM.WHEN CALLING THE NUMBERS LISTED THE CALLS WERE REDIRECTED OFF SITE AND TO OTHER OPERATIONAL DIVISIONS NOT ASSOCIATED WITH THE E-LINE GROUP.WORK WAS PLANNED 3 DAYS OUT AND THE 3 HOUR NOTICE REQUESTED WAS GIVEN BUT THE UNIT DID NOT SHOW UP FOR 4.5 HOURS.THIS WAS OUTSIDE THE AGREED UPON TIME. 09:30 - 11:30 2.00 ZONISO P WEXIT PJSM.SPOT E-LINE UNIT AT RIG.RIG UP E-LINE EQUIPMENT. 11:30 - 14:30 3.00 ZONISO P WEXIT RIG UP E-LINE RUNNING TOOLS AND EZSV. RUN IN HOLE WITH CCL,GR AND EZSV. SPACE OUT ON DEPTH SETTING TOP OF EZSV AT 6537 WIRE LINE DEPTH. 5'ABOVE CASING COLLAR AT 6542'. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 16 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 8/6/2011 End Date: 9/12/2011 X3-00YT9-C(5,866,360.00) Project: Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 114:30 - 16:00 1.50 ZONISO P WEXIT RIG DOWN E-LINE UNIT.PRESSURE TEST CASING ABOVE EZSV TO 550 PSI.THIS IS AN EQUIVALENT MUD WEIGHT OF 11.7 PPG.NO APPARENT LEAKS AT THIS PRESSURE. 16:00 - 18:00 2.00 BOPSUR P WEXIT CHANGE SAVER SUB AND DIES. 18:00 - 19:30 1.50 BOPSUR P WEXIT PULL WEAR BUSHING.JET BOP AT 500 GPM AND 62 PSI WITH JETTING TOOL. FUNCTION RAMS THEN JET AGAIN.CLOSE ANNULAR PREVENTER IN 22 SECONDS,TOP RAMS IN 7 SECONDS, BLIND SHEAR RAMS IN 14 SECONDS AND BOTTOM RAMS IN 6.5 SECONDS. 19:30 - 21:30 2.00 BOPSUR P WEXIT RIG UP TO TEST BOP, FILL STACK AND PICK UP TEST JOINT.HOLD WELL KILL DRILL.A TOTAL OF 10 BBLS TO FILL CHOKE LINES AND GAS BUSTER. 21:30 - 00:00 2.50 BOPSUR P WEXIT PJSM.TEST BOPS,ANNULAR PREVENTER AND ALL OTHER TOOLS TO 250 PSI LOW AND 3500 PSI HIGH FOR 5 CHARTED MINUTES EACH PER AOGCC AND BP POLICY.TEST UPPER RAMS,LOWER RAMS AND ANNULAR PREVENTER WITH 4"TEST JOINT.TEST WITNESS WAIVED BY BOB NOBLE WITH AOGCC.TEST WITNESSED BY WSL MITCH SKINNER AND TOURPUSHER BRIAN 4ITIEDEMANN. 8/22/2011 00:00 - 01:00 1.00 BOPSUR P WEXIT PJSM.TEST BOPS,ANNULAR PREVENTER AND ALL OTHER TOOLS TO 250 PSI LOW AND 3500 PSI HIGH FOR 5 CHARTED MINUTES EACH PER AOGCC AND BP POLICY.TEST UPPER RAMS,LOWER RAMS AND ANNULAR PREVENTER WITH 4"TEST JOINT.TEST I WITNESS WAIVED BY BOB NOBLE WITH AOGCC.TEST WITNESSED BY WSL MITCH SKINNER AND TOURPUSHER BRIAN TIEDEMANN.NO FAILURES ON TEST. 01:00 - 01:30 0.50 BOPSUR P WEXIT RIG DOWN TESTING EQUIPMENT. 01:30 - 02:30 1.00 I WHIP P WEXIT PICK UP TOOLS AND WHIPSTOCK :ASSEMBLY. PULL TEST PLUG.RUN IN WEAR RING WITH AN ID OF 9.125". 02:30 - 03:00 0.50 WHIP P WEXIT HOLD PRE JOB WITH RIG CREW AND SERVICE PERSONNEL. 03:00 - 05:00 2.00 WHIP P WEXIT MAKE UP GEN II WHIPSTOCK AND MILLING BHA TO 845'.VERIFY 3 PINS IN BOTTOM TRIP ANCHOR. 05:00 - 09:00 ! 4.00 WHIP P i WEXIT RUN IN HOLE WITH GEN II WHIPSTOCK AND MILLING BHA.SHALLOW TEST MWD AT 935', TOOL FUNCTIONING PROPERLY.CONTINUE TO 6394'MD.UP WEIGHT 138K, DOWN 110K. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 17 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 8/6/2011 End Date:9/12/2011 X3-00YT9-C(5,866,360.00) Project: Prudhoe Bay Site: PB R Pad I Rig Name/No.: NABORS 7ES Spud DatefTime: Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum:R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) i ' (ft) 09:00 10:00 1.00 WHIP P I WEXIT BRING PUMPS UP TO 450 GPM WITH 1550 PSI.ORIENT WHIPSTOCK SLIDE TO 65 I j1 DEGREES LEFT OF HIGH SIDE.WASH DOWN I TO 6527'MD.VERIFY TOOL FACE. SHUT DOWN PUMPS.SLACK OFF AND TAG EZSV AT 6537'MD.SET DOWN 15K WITH NO INDICATION OF BOTTOM TRIP ANCHOR SETTING.SET DOWN 20K AND SET BOTTOM TRIP ANCHOR. PULL 10K OVER TO VERIFY SET-OK.SET DOWN 45K TO SHEAR OFF BOLT-NO SHEAR. PULL UP TO 10K OVER I THEN SLACK OFF QUICKLY TO 45K AND SHEAR SLIDE BOLT. PICK UP ABOVE WHIPSTOCK SLIDE TO VERIFY FREE. MILLING ASSEMBLY FREE. SLACK BACK OFF I TO TAG TOP OF WHIPSTOCK SLIDE THEN PULL UP TO 6507'MD FOR FLUID DISPLACEMENT. 10:00 - 11:00 1.00 WHIP P WEXIT PUMP 30 BBLS HI-VIS SWEEP AND DISPLACE I I', WELLBORE TO 9.2 PPG LSND MILLING FLUID. PUMP AT 420 GPM WITH 1738 PSI. ' TAKE SLOW PUMP RATES AT 11:00 HOURS I i AT 6537'MD,5576'TVD.PUMP#1 AND#2-2 BPM/260 PSI,3 BPM/330 PSI. 11:00 - 22:30 11.50 STWHIP P WEXIT START PUMPING AT 450 GPM WITH 1275 PSI. ROTATE AT 90 RPM WTIH 6.3K TORQUE. UP WEIGHT 132K, DOWN 106K, ROTARY 120K. ' START MILLING AT 6515'MD.MILL TO 653Z 1 MD AT 450 GPM WITH 1190 PSI. ROTATE AT 100 RPM WITH 8K TORQUE OFF BOTTOM,12K I TORQUE ON BOTTOM.WEIGHT ON BIT 8K. UP WEIGHT 132K, DOWN 106K, ROTARY I 120K. BEGIN DRILLING NEW FORMATION AND DRILL TO 6552'MD.PUMP AT 480 GPM WITH 1350 PSI.ROTATE AT 90 RPM WITH 7K TORQUE OFF BOTTOM,10K TORQUE ON BOTTOM.WEIGHT ON BIT 15K. UP WEIGHT 132K, DOWN 106K,ROTARY 122K. 22:30 - 00:00 1.50 STWHIP P WEXIT PUMP HI-VIS SUPER SWEEP SURFACE TO SURFACE AT 554 GPM WITH 1655 PSI. ROTATE AT 80 RPM WITH 9K TORQUE. P A RECIPROCATE FROM 6510'MD TO 6552'MD. BETWEEN 6519'MD AND 6523'MD PULLING i 2K OVER AND TORQUE UP TO 10-11K.SHUT DOWN PUMPS AND ROTATION AND WORK THROUGH WINDOW SEVERAL TIMES. I EXPERIENCING 3 TO 4K DRAG ACROSS SAME AREA. RECOVERED 300 LBS OF METAL FROM MILLING OPERATION. I SAMPLES SHOWED SIGNIFICANT AMOUNT OF CEMENT. 8/23/2011 00:00 - 01:00 1.00 STWHIP P WEXIT PJSM.PULL UP INTO 9-5/8"WINDOW TO 6500' MD. FILL LINES AND CLOSE UPPER RAMS. PERFORM LEAK OFF TEST WITH 9.2 PPG MUD AT 5562'TVD. LOT TO 1230 PSI OR13.45 'PPG EMW.SEND DATA TO ODE,TAKAHI_RO KOSAKA.GIVEN OK TO PROCEED. I TAKE SLOW PUMP RATES AT 01:00 HOURS AT 6552'MD. BOTH PUMPS:2 BPM/240 PSI,3 BPM/300 PSI. ' fir Printed 9/26/2011 11:36:35AM �+I-'Dec North America -ALASKA- BP Page 18 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/6/2011 End Date:9/12/2011 X3-00YT9-C(5,866,360.00) Project: Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum:R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 01.00 - 04:00 3.00 STWHIP P WEXIT MUD WEIGHT IN AND OUT 9.2 PPG.POOH TO BHA AT 823'MD.HOLE TAKING CORRECT FILL.NO SWABBING. 04:00 - 05:30 1.50 STWHIP P WEXIT PJSM.LAY DOWN MILLING BHA. 05:30 - 06:30 1.00 STWHIP P WEXIT FLUSH BOP WITH JETTING TOOL. 06:30 - 09:00 2.50 STWHIP P WEXIT PICK UP BHA#8,DRILL-OUT ASSY. -PJSM WITH RIG CREW SLB DD AND MWD I' -PICK UP BHA#8 AS FOLLOWS: -8 1/2"REBUILT PDC BIT(HYCALOG DTX619M-D6) -XP 1.50 MOTOR -NM STABILIZER -ARC -MWD -NM STABILIZER -(3)NM DRILL COLLAR -FLOAT SUB W/FLOAT -(1)5"HWDP -6 1/2"OIL JAR -(16)5"HWDP -'XO' OVERALL LENGTH=742.06'. MAX OD=8.50". 09:00 - 13:30 410 STWHIP P WEXIT RUN IN THE HOLE WITH BHA#8,PICKING UP 4"DRILL PIPE. -FROM 742'TO 5725'MD. -UP WEIGHT=130K LBS;DOWN WEIGHT= 95K LBS. 13:30 - 14:30 1.00 STWHIP ' WEXIT RUN IN THE HOLE WITH BHA#8,ON STANDS OF 4"DRILL PIPE. -FROM 5725'TO 6289'MD. -UP WEIGHT= 140K LBS;DOWN WEIGHT= 100K LBS. 14:30 - 16:00 1.50 STWHIP P WEXIT CUT AND SLIP DRILL LINE. -PJSM WITH RIG CREW. -CUT AND SLIP 143'OF DRILL LINE. ADJUST BRAKES. -SERVICE DRAWWORKS AND TOP DRIVE. 16:00 - 18:00 2.00 STWHIP P WEXIT MAD PASS FROM 6300'TO 6552'MD FOR TIE-IN LOGS. -RUN IN THE HOLE FROM 6289'TO 6300'MD. MAD PASS TO 6552'MD. -405 GPM;1227 PSI. -UP WEIGHT= 140K LBS;DOWN WEIGHT= 104K LBS. -WORK THROUGH WINDOW WITHOUT CIRCULATION. -FROM 6515'TO 6532'MD. -2K LBS DRAG NOTED AT 6527'. -5K LBS DRAG NOTED AT 6534'. SLOW PUMP RATES TAKEN AT 17:10. -TMD=6477',TVD=5530'. -PUMP 1 --2 BPM AND 320 PSI;3 BPM AND 380 PSI. -PUMP 2--2 BPM AND 310 PSI;3 BPM AND 380 PSI. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 19 of 46 Operation Summary Report Common Well Name:R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/6/2011 End Date: 9/12/2011 X3-00YT9-C(5,866,360.00) Project: Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum:R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code j NPT NPT Depth 1 Phase Description of Operations (hr) 18:00 - 23:00 5.00 DRILL P + INTI DRILL 8 1/2"INTERMEDIATE HOLE SECTION I WITH BHA#8, DRILL-OUT ASSY. -FROM 6552'TO 6854'DPM. -UP WEIGHT=145K LBS,DOWN WEIGHT= . 100K LBS. -40 RPM;ROTATING WEIGHT=116K LBS. -TORQUE ON BTM=9K FT-LBS;TORQUE OFF BTM=7K FT-LBS. -505 GPM;1990 PSI ON BTM;1690 PSI OFF I BTM. -WEIGHT ON BIT=15K LBS. -MUD WEIGHT=9.2 PPG IN AND OUT. -ACTUAL ECD= 10.0. I -ENCOUNTERED GAS. -BACK GROUND GAS RANGING FROM 161 UNITS TO 554 UNITS AT 6854' MAX GAS WAS 1049 UNITS AT 6744'. -- ART=0.3 HRS;AST=3.0 HRS;ADT=3.3 HRS. 23:00 - 00:00 1.00 DRILL P INTI CIRCULATE HOLE CLEAN. • -530 GPM;1910 PSI. I -ROTATING AT 40 RPM;6.5K FT-LBS i TORQUE. -RECIPROCATING FROM 6835'TO 6760'MD. 8/24/2011 00:00 - 00:30 0.50 DRILL P , INTI CONTINUE TO CIRCULATE HOLE CLEAN. -530 GPM;1910 PSI. I-ROTATING AT 40 RPM;6.5K FT-LBS TORQUE. 1 RECIPROCATING FROM 6835'TO 6760'MD. -MONITOR THE WELL -NO FLOW. 00:30 - 03:00 2.50 1 DRILL I P INTI 'PULL OUT OF THE HOLE WITH BHA#8,8 1/2" DRILL-OUT ASSY. j 1 i -FROM 6854'TO 742'MD. .-NO SIGNS OF SWABBING. 03:00 - 05:00 2.00 DRILL P INTI I LAY DOWN BHA#8. I-PJSM WITH RIG CREW AND SLB DD AND MWD. -MONITOR THE WELL. -NO FLOW. 05:00 - 06:00 1.00 DRILL P INTI MWD DOWNLOAD DATA FROM TOOLS AND RE-PROGRAM FOR NEXT RUN. CLEAN AND CLEAR RIG FLOOR. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 20 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/6/2011 End Date:9/12/2011 X3-00YT9-C(5,866,360.00) I Project: Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:R-12 c@55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 06:00 - 08:00 2.00 DRILL P INTI PICK UP AND RUN IN THE HOLE WITH BHA #9,8 112"ROTARY STEERABLE SYSTEM. -PJSM WITH RIG CREW AND SLB DD. -PICK UP BHA#9 AS FOLLOWS: -8 1/2"RSR616M PDC BIT -POWERDRIVE RSS -ARC -MWD -(3)NM DRILL COLLARS -FLOAT SUB -TOMAX ANTI-STALL TOOL I -(1)5"HWDP -OIL JAR -(16)5"HWDP. `XO' OVERALL LENGTH=733.93'. I MAX OD=8.50". BIT TO RES=28.29'; BIT TO GR=28.46'; BIT TO DNI=53.01'; BIT TO PWD=26'; BIT TO i I PDGR=8_33'; BIT TO PDINC=9.13'. 08:00 - 12:00 4.00 DRILL P 1 INTI RUN IN THE HOLE WITH THE 8 V2"RSS. -FROM 733'TO 6563'MD. -UP WEIGHT= 140K LBS;DOWN WEIGHT= 100K LBS. j -PERFORMED A SHALLOW HOLE TEST AT I 1000'. -GOOD TEST. I SLOW PUMP RATES: -TMD=6751', TVD=5715'. -PUMP 1 --2 BPM AND 260 PSI;3 BPM AND 340 PSI. -PUMP 2--2 BPM AND 260 PSI;3 BPM AND 7. 340 PSI. 12:00 - 13:00 1.00 DRILL P 1 INTI TAKE SURVEYS AND MAD PASS. -MAD PASS FROM 6800'TO 6854'MD. -TAKING SURVEYS EVERY 30'. -440 GPM;1390 PSI. -80 RPM;7K LBS TORQUE. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 21 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 8/6/2011 End Date:9/12/2011 X3-00YT9-C(5,866,360.00) Project: Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. •UWI: Active Datum:R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 13:00 - 18:00 5.00 DRILL P INT1 DRILL 8 1/2"INTERMEDIATE HOLE SECTI N WITH BHA#9, RSS. -FROM 6854'TO 7504'DPM. -UP WEIGHT= 145K LBS,DOWN WEIGHT= 100K LBS. -150 RPM;ROTATING WEIGHT= 115K LBS. -TORQUE ON BTM=8K FT-LBS;TORQUE OFF BTM=6.55K FT-LBS. -578 GPM;2630 PSI ON BTM;2260 PSI OFF BTM. I -WEIGHT ON BIT=18K LBS. I -MUD WEIGHT=9.3 PPG IN AND 9.4+PPG OUT. -CALCULATED ECD= 10.11;ACTUAL ECD= 10.5. SLOW PUMP RATES: -TMD=7222',TVD=5945'. -PUMP 1 --2 BPM AND 320 PSI;3 BPM AND 400 PSI. -PUMP 2--2 BPM AND 320 PSI;3 BPM AND 380 PSI. ADT=2.78 HRS. 18:00 - 00:00 6.00 DRILL P INTI DRILL 81/2"INTERMEDIATE HOLE SECTIO N WITH BHA#9, RSS. FROM 7504'TO 8162'DPM. -UP WEIGHT=155K LBS,DOWN WEIGHT= 100K LBS. • -150 RPM;ROTATING WEIGHT= 118K LBS. -TORQUE ON BTM=9K FT-LBS;TORQUE OFF BTM=7K FT-LBS. -577 GPM;2880 PSI ON BTM;2865 PSI OFF BTM. -WEIGHT ON BIT= 18K LBS. -MUD WEIGHT=9.2 PPG IN AND 9.4 PPG OUT. -CALCULATED ECD= 10.12;ACTUAL ECD= 110.51. SLOW PUMP RATES: -TMD=8162',TVD=6461'. -PUMP 1 --2 BPM AND 340 PSI;3 BPM AND 430 PSI. -PUMP 2--2 BPM AND 340 PSI;3 BPM AND 1430 PSI. 1 ADT=3.06 HRS.; BIT HRS=5.84. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 22 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 8/6/2011 End Date: 9/12/2011 X3-00YT9-C(5,866,360.00) Project: Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum: R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) 8/25/2011 00:00 - 00:30 0.50 DRILL P -r (ft ) INTI DRILL 8 1/2"INTERMEDIATE HOLE SECTION 1 1 WITH BHA#9, RSS. -FROM 8162'TO 8256DPM. -UP WEIGHT=155K LBS,DOWN WEIGHT= 105K LBS. -150 RPM;ROTATING WEIGHT= 118K LBS. !, -TORQUE ON BTM=9K FT-LBS;TORQUE OFF 1 BTM=7K FT-LBS. -577 GPM;2880 PSI ON BTM;2865 PSI OFF I . BTM. -WEIGHT ON BIT=18K LBS. -MUD WEIGHT=9.2 PPG IN AND 9.4 PPG OUT. -CALCULATED ECD= 10.12;ACTUAL ECD= 10.51. 00:30 - 01:00 0.50 DRILL P INTI CIRCULATE A BOTTOMS UP 1. -566 GPM;3193 PSI, 01:00 - 04:00 3.00 DRILL 1 P INTI _WEIGHT UP TO 10.1 PPG LSND. . TAKE ON SPIKE FLUID TO PITS. 1 -566 GPM;3193 PSI. -MED WEIGHT= 10.1 PPG IN AND 10.1 PPG i OUT. 04:00 - 06:00 2.00 DRILL P i INTI DRILL 8 1/2"INTERMEDIATESECTION-. WITH BHA#9, RSS. -FROM 8256'TO8358 MD,. -UP WEIGHT=1-65K K LBS,DOWN WEIGHT= 1 105K LBS. i -150 RPM;ROTATING WEIGHT= 118K LBS. 1 • -TORQUE ON BTM=9K FT-LBS;TORQUE OFF BTM=7K FT-LBS. 1 I-577 GPM;3030 PSI ON BTM;2878 PSI OFF 1 • BTM. I-WEIGHT ON BIT= 18K LBS. -MUD WEIGHT=10.1 PPG IN AND 10.1 PPG OUT. 06:00 - 12:00 6.00 DRILL P INTI DRILL 8-1/2"INTERMEDIATE HOLE WITH BHA '#9, RSS FROM 8358'MD TO 8914'MD. 18KLBS WOB,570 GPM,3600 PSI ON,3400 PSI OFF BOTTOM. 8 KFT-LBS TORQUE ON,7 KFT-LBS OFF BOTTOM. 4.58 ACTUAL DRILLING HOURS ALL ROTATING AT 150 RPM. SLOW PUMP RATES @ 09:00,8725'MD,6907' TVD: MP#1 2 BPM/340 PSI 3 BPM/440 PSI-- MP#22 BPM/340 PSI,3 BPM/440 PSI 12:00 - 18:00 6.00 DRILL P INTI DRILL 8-1/2"INTERMEDIATE HOLE WITH H BHP( #9RSS FROM 8914'MD TO 9479'MD. 20 KLBS WOB,570 GPM. 3860 PSI ON,3800 PSI OFF BOTTM. 10 KFT-LBS ON,9 KFT-LBS OFF 1 I BOTTOM. ACTUAL DRILLING TIME=3.69,ALL ROTATING AT 150 RPM. SLOW PUMP RATES @ 14:25,9197'MD,7347' TVD: MP#1 2 BPM/30 PSI,3 BPM/440 PSI-- MP#2 2 BPM/330 PSI,3 BPM/440 PSI. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 23 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/6/2011 End Date: 9/12/2011 X3-00YT9-C(5,866,360.00) Project: Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum: R-12©55.29ft(above Mean Sea Level) Date From-To Hrs I Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 18:00 00:00 6.00 DRILL P r INTI DRILL 8-1/2"INTEMEDIATE HOLE WITH BHA - #9, RSS, FROM 9479'TO 9948'MD. 20 KLBS, 535 GPM. 3750 PSI ON BOTTOM,3700 PSI I OFF BOTTOM. 11 KFT-LBS ON,9 KFT-LBS OFF BOTTOM TORQUE AT 150 RPM. ACTUAL DRILLING TIME=3.25 HRS. CALCULATED ED I I =10.89 PPG,ACTUAL=11.56 PPG. I SLOW PUMP RATES @ 19:40 HRS,9667'MD, 7785'TVD: MP#1 2 BPM/380 PSI,3 BPM/480 PSI--MP#2 2 BPM/380 PSI,3 BPM/500 PSI. I l BIT HOURS=17.35 8/26/2011 00:00 - 07:00 7.00 DRILL P INTI DRILL 8 1/2"INTERMEDIATE HOLE SECTION WITH BHA#9, RSS. -FROM 9479'TO 10,429'DPM. -UP WEIGHT= 195K LBS,DOWN WEIGHT= 140K LBS. -150 RPM;ROTATING WEIGHT= 158K LBS. -TORQUE ON BTM=7.3K FT-LBS;TORQUE I I OFF BTM=6K FT-LBS. I• -546 GPM;3630 PSI ON BTM;3610 PSI OFF r BTM. -WEIGHT ON BIT= 16K LBS. i MUD HT- 1 + + U G 0.1 PPG IN AND 10.2 PPG i OUT. • -CALCULATED ECD=10.87;ACTUAL ECD= 11.16. I I SLOW PUMP RATES: -TMD= 10,133',TVD=8219'. -PUMP 1 --2 BPM AND 350 PSI;3 BPM AND 500 PSI. -PUMP 2--2 BPM AND 400 PSI;3 BPM AND 500 PSI. 07:00 - 08:00 1.00 DRILL P i INTI CIRCULATE UP SAMPLE FOR THE GEOLOGISTS. -543 GPM;3515 PSI. -150 RPM;6K FT-LBS TORQUE. -- -PUMPED 865 BBLS. 08:00 - 08:30 0.50 DRILL P 1 INTI DRILL 8 1/2"INTERMEDIATE HOLE SECTION WITH BHA#9, RSS._ -FROM 10,429'TO 10,439'DPM. -UP WEIGHT= 195K LBS,DOWN WEIGHT= 140K LBS. -150 RPM;ROTATING WEIGHT= 158K LBS. -TORQUE ON BTM=7.3K FT-LBS;TORQUE , OFF BTM=6K FT-LBS. I I I 1 I-546 GPM;3630 PSI ON BTM;3610 PSI OFF BTM. -WEIGHT ON BIT= 10K LBS. -MUD WEIGHT=10.1 PPG IN AND 10.2 PPG OUT. 08:30 - 10:00 1.50 DRILL P INTI 'CIRCULATE UP SAMPLE FOR THE I GEOLOGISTS. -559 GPM;3630 PSI. -150 RPM;6K FT-LBS TORQUE. I I - - f I -_- __1_-PUMPED 1038 BBLS. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 24 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) ' Start Date:8/6/2011 End Date:9/12/2011 X3-00YT9-C(5,866,360.00) Project: Prudhoe Bay Site: PB R Pad Rig Name/No.:NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) ' 110:00 - 10:30 1 0.50 DRILL P TI INT1 DRILL 8 1/2"INTERMEDIATE HOLE SECTION 1 WITH BHA#9, RSS. -FROM 10,439'TO 10,447'DPM. UP VVEMPTIrEBS,DOWNWEIGHT= 1 140K LBS. 1 I -150 RPM;ROTATING WEIGHT=158K LBS. -TORQUE ON BTM=8K FT-LBS;TORQUE OFF BTM=7K FT-LBS. 1 -560 GPM;3640 PSI ON BTM;3630 PSI OFF 1 BTM. -WEIGHT ON BIT=10K LBS. -MUD WEIGHT=10.1 PPG IN AND 10.2 PPG OUT. -CALCULATED ECD= 10.87;ACTUAL ECD= 11.16. 10:30 - 11:30 1.00 DRILL P INTI CIRCULATE. • I i -229 GPM;3610 PSI. -150 RPM;6K FT-LBS TORQUE. 1 -RECIPROCATING THE PIPE FROM 10,447'TO I 10,410'MD. 11:30 12:00 0.50 DRILL P INTI DRILL 8 1/2"INTERMEDIATE HOLE SECTION WITH BHA#9,_RSS. -FROM 10,447'TO 10,449'DPM. ' 1 •-UP WEIGHT=195K LBS,DOWN WEIGHT= I 140K LBS. -150 RPM; ROTATING WEIGHT= 158K LBS. j I I -TORQUE ON BTM=8K FT-LBS;TORQUE OFF BTM=7K FT-LBS. • -560 GPM;3640 PSI ON BTM;3630 PSI OFF BTM. -WEIGHT ON BIT= 10K LBS. li MUD WEIGHT=10.1 PPG IN AND 10.2 PPG OUT. CALCULATED ECD= 10.87;ACTUAL ECD= 10.86. FROM 00:00 TO 12:00--ADT=4.45 HRS.; BIT HRS=21.7. 12:00 - 12:30 0.50 DRILL P INTI CIRCULATE AND CONDITION THE MUD. -561 GPM;3675 PSI. -150 RPM;6K FT-LBS TORQUE. SLOW PUMP RATES: -TMD= 10,449',TVD=8512'. -PUMP 1 --2 BPM AND 280 PSI;3 BPM AND 370 PSI. -PUMP 2--2 BPM AND 280 PSI;3 BPM AND I 380 PSI. 12:30 15:00 2.50 DRILL P 1 INTI PULL OUT OF THE HOLE ON ELEVATORS. -FROM 10,449'TO 9310'MD. -ENCOUNTERED TIGHT HOLE, PULLED 25K LBS OVER AT: l -9604',9695',9559',9553',9343',9335', 1 19317',9310'. _ i _ ;-WORKED EACH TIGHT SPOT. 15:00 - 16:00 1.00 DRILL , P + INT1 I RUN BACK IN THE HOLE 5 STANDS AND CIRCULATE. 1-RUN IN THE HOLE FROM 9310'TO 9761'MD. j-556 GPM;3520 PSI. 1-150 RPM;6K FT-LBS TORQUE. , -RECIPROCATING FROM 9761'TO 9667'MD. ' '-PUMPED 331 BBLS. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 25 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/6/2011 End Date: 9/12/2011 X3-00YT9-C(5,866,360.00) Project: Prudhoe Bay Site: PB R Pad , Rig Name/No.: NABORS 7ES Spud Date/Time: 1 Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum:R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 16:00 - 18:30 2.50 DRILL P INTI PULL OUT OF THE HOLE ON ELEVATORS. -FROM 9667'TO 8914'MD. -ENCOUNTERED TIGHT HOLE, PULLED 25K LBS OVER AT: -9576',9306',9294',9276',9251',9171', 9144',9126',9077',9066',8949'. -WORKED EACH TIGHT SPOT. 18:30 - 20:00 1.50 DRILL P INTI PUMP OUT OF THE HOLE. -FROM 8914'TO 8100'MD. -UP WEIGHT= 150K LBS;DOWN WEIGHT= 100K LBS. -250 GPM;1045 PSI. 20:00 - 21:00 1.00 DRILL P INTI RUN IN THE HOLE. -MONITOR WELL FOR 10 MIN. -NO FLOW. 1 -FROM 8100'TO 10,362'MD. -TOOK 20K LBS AT 10,326'. -ATTEMPTED TO PICK UP AND HAD 20K LBS L..-_ OVER PULL. 21:00 - 22:00 1.00 DRILL P INT1 STAGE UP PUMP RATES AND WASH TO - BOTTOM. -STAGE UP PUMPS TO 550 GPM;3750 PSI. -35 RPM. -WASH DOWN FROM 10,352'TO 10,449'. 22:00 - 23:00 1.00 DRILL P INTI CIRCULATE WELL CLEAN. ' -550 GPM;3750 PSI. -150 RPM;6K FT-LBS TORQUE. -RECIPROCATING PIPE FROM 10,449'TO 10, 419'MD. -LARGE VOLUME OF SHALE SPLINTERS ON BOTTOMS UP STROKES. -SPLINTERS ARE-1"LONG---SEE II ATTACHED PHOTO. 23:00 - 00:00 1.00 DRILL P I, INTI WEIGHT UP SYSTEM FROM 10.1 PPG TO 10.5 , PPG. 1 1 I-CONTINUE TO WORK PIPE 30'OFF BOTTOM. ' 1-550 GPM;3750 PSI. -150 RPM;6K FT-LBS TORQUE. 8/27/2011 00:00 - 01:00 1.00 DRILL P • INTI CONTINUE TO WEIGHT UP SYSTEM FROM 10.1 PPG TO 10.5 PPG. -CONTINUE TO WORK PIPE 30'OFF BOTTOM. I-550 GPM;3750 PSI. -150 RPM;6K FT-LBS TORQUE. 01:00 - 04:00 3.00 DRILL P INTI PULL OUT OF THE HOLE. -FROM 10,449'TO 8119'MD. -ROLLING PUMPS AT 2 BPM;380 PSI. -UP WEIGHT= 195K LBS;DOWN WEIGHT= 175K LBS. 04:00 - 04:30 0.50 DRILL P INTI PULL OUT OF THE HOLE ON ELEVATORS. -FROM 8119'TO 7322'. 1 -EXPERIENCED TIGHT HOLE AND SWABBING. UP WEIGHT=165K LBS;DOWN WEIGHT= 100K LBS. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 26 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 8/6/2011 End Date: 9/12/2011 X3-00YT9-C(5,866,360.00) Project: Prudhoe Bay Site:PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor NABORS ALASKA DRILLING INC. UWI: Active Datum: R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 04:30 - 05:00 0.50 DRILL P INT1PULL OUT OF THE HOLE,ROLLING THE j PUMPS. -FROM 7322'TO 6515'MD. -ROLLING PUMPS AT 3 BPM;350 PSI. -UP WEIGHT= 150K LBS;DOWN WEIGHT= 90K LBS. PUMPED ALL THE WAY TO THE WINDOW i DUE TO SWABBING AND TIGHT HOLE. 05:00 - 09:00 4.00 DRILL P INTI CIRCULATED THE WELL CLEAN AT THE 9 5/8" WINDOW. -550 GPM;3077 PSI. -80 RPM;3.5K FT-LBS TORQUE. -RECIPROCATING 60'. -UP WEIGHT= 150K LBS;DOWN WEIGHT= 90K LBS. ! ROTATING WEIGHT= 115K LBS. SHAKERS LOADED UP ON BOTTOMS UP STROKES. MONITOR THE WELL FOR 10 MIN. I -NO FLOW. 09:00 - 13:30 4.50 DRILL P INTI PULL OUT OF THE HOLE STANDING BACK 4" • DRILL PIPE. -FROM 6515'TO 733'MD. -UP WEIGHT=63K LBS;DOWN WEIGHT= I 63K LBS. 13:30 - 17:00 3.50 DRILL P INTI LAY DOWN BHA#9,8 1/2"ROTARY !STEERABLE. I-MONITOR THE WELL. ! -NO FLOW. PJSM WITH RIG CREW AND SLB DD AND I IMWD. -DULL BIT GRADE:3-2-CT-A-X-I-WT- TD. 117:00 - 17:30 0.50 DRILL P INTI CLEAN AND CLEAR RIG FLOOR. 17:30 - 21:00 3.50 BOPSUR P INTI CHANGE UPPER PIPE RAMS. PJSM WITH RIG CREW. PULL THE WEAR RING. I I REPLACE THE LEAKING AIR BOOT ON THE I RISER. -CHANGE THE UPPER PIPE RAMS TO 7" FIXED-RAMS. 21:00 - 23:00 2.00 CASING P INTI RIG UP TO RUN 7",26 LB/FT, L-80 VAMTOP CASING. ' -PJSM WITH RIG CREW AND NABORS 1CASING REPRESENTATIVE. -CHANGE BALES ON TOP DRIVE. 1. RIG UP FRANKS FILL UP TOOL. -RIG UP 350T ELEVATORS. !PICK UP THE SPIDERS AND POWER TONGS AND BRING TO RIG FLOOR. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 27 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/6/2011 End Date:9/12/2011 X3-00YT9-C(5,866,360.00) Project: Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum:R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth 1 Phase Description of Operations (hr) (ft) 1 23:00 00:00 1.00 BOPSUR P INTI PRESSURE TEST UPPER PIPE RAMS. RIG UP 7"TEST JOINT. 1 PRESSURE TEST UPPER PIPE RAMS. -250 PSI LOW FOR 5 CHARTED MINUTES. -3500 PSI HIGH FOR-5 CHARTED I MINUTES. -GOOD TESTS. FUNCTION TESTED ALL RAMS. I j -UPPER RAMS CLOSED IN 6 SEC. -BOTTOM RAMS CLOSED IN 6 SEC. -BLIND/SHEAR RAMS CLOSED IN 14 SEC. -HCR KILL AND CHOKE CLOSED IN 1 SEC 4 EACH. 8/28/2011 00:00 - 02:00 2.00 CASING P INTI CONTINUE TO RIG UP TO RUN 7",26 LB/FT, L-80 VAMTOP CASING. j -PJSM WITH RIG CREW AND NABORS j CASING REPRESENTATIVES. -LOADED PLUGS IN HALLIBURTON CEMENT HEAD. -11 TURNS TO DROP EACH PLUG. -RIG UP POWER TONGS. i -RIG UP SINGLE JOINT ELEVATORS. -RIG UP TORQUE TURN MONITORING EQUIPMENT. 02:00 - 06:00 4.00 CASING P INTI RUN IN THE HOLE WITH THE 7",26 LB/FT, 'L-80 VAMTOP LONG STRING. I -PJSM WITH RIG CREWAND NABORS ' CASING REPRESENTATIVES. -MAKE UP SHOE TRACK. -CHECK FLOATS. -TORQUE EACH VAMTOP CONNECTION TO I I11,950 FT-LBS. -INSTALL HYDROFORM CENTRALIZER ON JTS4-27. -CIRCULATE A CASING VOLUME EVERY 1000'. TO 2050'MD. -UP WEIGHT=75K LBS;DOWN WEIGHT= 75K LBS. -CIRCULATE CASING VOLUME AT 168 GPM; _ 230 PSI. 06:00 14:30 8.50 CASING P INTI CONTINUE TO RUN IN THE HOLE WITH THE 7" LONG STRING. -FROM 2050'TO 6475'MD. -CIRCULATE A CASING VOLUME AT 3072'MD. -UP WEIGHT=90K LBS;DOWN WEIGHT= 90K LBS. -168 GPM;235 PSI. -CIRCULATE A CASING VOLUME AT 4096'MD. -UP WEIGHT= 106K LBS;DOWN WEIGHT 1 105K LBS. -168 GPM;330 PSI. -CIRCULATE A CASING VOLUME AT 5120'MD. -UP WEIGHT= 115K LBS; DOWN WEIGHT = 114K LBS. -168 GPM;364 PSI. 14:30 - 16:00 1.50 CASING P INTI I CIRCULATE 1.5 CASING VOLUMES AT THE 1 ' ' I WINDOW. -STAGE PUMPS TO 214 GPM;505 PSI. -UP WEIGHT= 165K LBS;DOWN WEIGHT= 135K LBS. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 28 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 8/6/2011 End Date: 9/12/2011 X3-00YT9-C(5,866,360.00) Project: Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:R-12 @55.29ft(above Mean Sea Level) Date 1 From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 16:00 19:30 3.50 CASING P INTI CONTINUE TO RUN IN THE HOLE WITH THE 7" LONG STRING. -FROM 6475'TO 8531'MD. -UP WEIGHT=225K LBS;DOWN WEIGHT= 145K LBS. 19:30 - 22:00 2.50 CASING P INTI CIRCULATE A BOTTOMS UP AT THE TOP OF THE HRZ,8531'MD. -STAGE PUMPS UP TO 169 GPM;690 PSI. -PUMPED 225 BBLS OF 10.6 PPG LSND. THE CUP ON THE FRANKS FILL UP TOOL BEGAN LEAKING 3/4 OF THE WAY THROUGH THE CIRCULATION. A HEAD PIN WAS RIGGED UP AND THE CIRULATION FINISHED WHILE THE NEW CUP WAS INSTALLED ON THE FILL UP TOOL. 22:00 - 23:00 1.00 CASING P INTI CONTINUE TO RUN IN THE HOLE WITH THE 7" LONG STRING. -FROM 8531'TO 9280'MD. -UP WEIGHT=230K LBS;DOWN WEIGHT= 140K LBS. 23:00 - 00:00 1.00 CASING N DPRB 9,287.00 INTI WORKING THE 7"CASING,ATTEMPTING TO ESTABLISH CIRCULATION. -ENCOUNTERED 25K LBS DRAG AT 9280'MD. -ATTEMPTED TO PICK UP AND PULLED 20K LBS OVER AT 9274'MD. -WORKED PIPE FOR SEVERAL MINUTES. -ATTEMPTED TO ESTABLISH CIRCULATION . • 'ON THE UPSTROKE. -FROM 9287'TO 9265'MD. -CASING PACKED OFF. -WORKED PIPE,LETTING PRESSURE BLEED OFF. '-NOT ABLE TO ESTABLISH CIRCULATION OR MOVE PIPE. -CONTINUED TO WORK PIPE PULLING UP 30K LBS OVER. -CONTINUED TO ATTEMPT TO TRY AND ESTABLISH CIRCULATION. 8/29/2011 00:00 - 02:00 2.00 CASING N DPRB 9,287.00 INTI I CONTINUE TO WORK THE 7"CASING STRING. ATTEMPT TO ESTABLISH CIRCULATION. -PULL UP TO 60K LBS OVER. -WORK PIPE WITH AND WITHOUT PRESSURE. -MADE 25'UPWARD PROGRESS. -ABLE TO LAY DOWN JOINT 227. 02.00 - 06:00 4.00 CASING N DPRB 9,287.00 INT1 CONTINUE TO WORK THE 7"CASING STRING. -ATTEMPT TO ESTABLISH CIRCULATION. -PULL UP TO 60K LBS OVER. • -WORK PIPE WITH AND WITHOUT PRESSURE. -ABLE TO ESTABLISH CIRCULATION. -STAGE PUMPS UP TO 203 GPM;710 PSI. 06:00 - 12:00 6.00 CASING N DPRB 9,287.00 INTI CONTINUE TO WORK THE 7"CASING STRING. PACKED OFF WHILE STAGING UP PUMPS. -ABLE TO ESTABLISH CIRCULATION. -STAGE PUMPS UP TO 192 GPM;750 PSI. I-HOLE PACKED OFF AGAIN. -RE-ESTABLISHED CIRCULATION AND STAGED PUMPS UP. -5 BPM;700 PSI. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 29 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 8/6/2011 End Date: 9/12/2011 X3-00YT9-C(5,866,360.00) Project:Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum: R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12:00 - 16:00 4.00 CASING N DPRB 9,287.00 INTI CONTINUE TO WORK THE 7"CASING STRING. -HOLE PACKED OFF. WORK CASING FROM 9248'TO 9240'MD. -PULL UP TO 60K LBS OVER. -UNABLE TO RE-ESTABLISH CIRCULATION. 16:00 - 20:00 4.00 CASING N DPRB 9,287.00 INTI CONTINUE TO WORK THE 7"CASING STRING. -WORK PIPE THROUGH TIGHT SPOTS FROM 9248'TO 9190'MD. -PULL UP TO 130K LBS OVER. -UNABLE TO ESTABLISH CIRCULATION. -PUMP OUT FROM 9190'TO 8834'MD.LAYING DOWN CASING. -UP WEIGHT=205K LBS;DOWN WEIGHT =135K LBS. -122 GPM;490 PSI. 20:00 - 22:00 2.00 CASING N DPRB 9,287.00 INTI CONTINUE TO PULL AND LAY DOWN 7" CASING. -FROM 88834'TO 8520'MD. -UP WEIGHT=215K LBS;DOWN WEIGHT= .140K LBS. 22:00 - 22:30 0.50 CASING N DPRB 9,287.00 INTI RIG UP TO CIRCULATE. .-LAY DOWN THE FRANKS FILL UP TOOL. -THE INTERNAL BLADDER ON THE FILL UP TOOL WORE OUT. -REPLACED LOWER END AND PACKER CUP ON FILL UP TOOL. -RIGGED UP HEAD PIN TO CIRCULATE 4'THROUGH THE CEMENT HOSE. 22:30 - 00:00 1.50 CASING N DPRB 9,287.00 INTI CIRCULATE ABOVE THE TOP OF THE HRZ; -RECIPROCATING FROM 8523'TO 8480'MD. I -STAGE PUMPS UP TO 290 GPM;815 PSI. -UP WEIGHT=185K LBS;DOWN WEIGHT= 130K LBS. 8/30/2011 00:00 - 01:00 1.00 CASING N -. DP,RB, 9,287.00 INTI CONTINUE TO CIRCULATE ABOVE THE TOP OF THE HRZ. -RECIPROCATING FROM 8523'TO 8480' MD. -STAGE PUMPS UP TO 290 GPM;815 PSI. -UP WEIGHT=185K LBS;DOWN WEIGHT= 130K LBS. -MUD WEIGHT IN 10.5 PPG;OUT 10.5+PPG. -RIG DOWN CIRCULATING HEAD AND RIG UP FRANKS FILL UP TOOL. 01:00 - 03:30 2.50 CASING N DPRB 9,287.00 INTI WASH DOWN 7",26 LB/FT,VAMTOP CASING. -FROM 8250'TO 8930'MD. -6 BPM;785 PSI. -UP WEIGHT=185K LBS;DOWN WEIGHT= 142K LBS. -PACKED OFF AT 8930'MD,PRESSURE INCREASED TO 1020 PSI. 03:30 - 06:00 2.50 CASING N DPRB 9,287.00 INTI WORK THE 7"CASING STRING. 7ESTABEISFrCIRCULA I ION. -STAGE PUMPS UP TO 121 GPM;850 PSL 06:00 - 12:00 6.00 CASING N DPRB 9,287.00 INTI WASH DOWN 7",26 LB/FT,VAMTOP CASING. 1-FROM 8930'TO 9098'MD. -121 GPM;850 PSI. -UP WEIGHT=200K LBS;DOWN WEIGHT= 140K LBS. Printed 9/26/2011 11:36:35AM North America-ALASKA- BP Page 30 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/6/2011 End Date: 9/12/2011 X3-00YT9-C(5,866,360.00) Project: Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12:00 - 16:30 4.50 CASING N DPRB 9,287.00 INTI WASH DOWN 7;26 LB/FT,VAMTOP CASING._ l -FROM 9098'TO 9130'MD. -STAGED PUMPS TO 294 GPM;900 PSI. -UP WEIGHT=230K LBS;DOWN WEIGHT= 145K LBS. PACKED OFF AT 9130'. -STAGED PUMPS BACK UP TO 294 GPM;930 PSI. -WASH DOWN FROM 9130'TO 9227'MD. -UP WEIGHT=230K LBS;DOWN WEIGHT= 145K LBS. 16:30 - 19:00 2.50 CASING N DPRB 9,287.00 INTI WORK 7",26 LB/FT CASING STRING. -PACKED OFF AT 9227'MD. -WORKED PIPE FREE AND LAID DOWN 1 JOINT. -FROM 9227'TO 9186'MD. -ESTABLISHED CIRCULATION. -STAGED UP PUMPS TO 294 GPM;862 PSI. -PUMPED A 40 BBL LOW-VIS SWEEP. -PACKED OFF AGAIN BEFORE SWEEP EXITED CASING. -RE-ESTABLISHED CIRCULATION. -STAGED UP PUMPS TO 294 GPM;865 PSI. 19:00 - 00:00 5.00 CASING N DPRB 9,287.00 INTI WASH DOWN 7",26 LB/FT,VAMTOP CASING. -FROM 9186'TO 9218'MD. -STAGED PUMPS TO 294 GPM;900 PSI. • -UP WEIGHT=230K LBS;DOWN WEIGHT= 150K LBS. 8/31/2011 00:00 - 04:30 4.50 CASING N DPRB 9,287.00 INTI 'CONTINUE TO WASH DOWN 7",26 LB/FT, VAMTOP CASING. -FROM 9218'MD TO 9230'. -STAGED PUMPS TO 294 GPM;900 PSI. I-UP WEIGHT=230K LBS;DOWN WEIGHT= 1150K LBS. l PACKED OFF AT 9230'. -PICKED UP TO 9210'. -STAGED PUMPS BACK UP TO 294 GPM;847 PSI. -WASH DOWN FROM 9210'TO 9230'MD. -DOWN WEIGHT= 145K LBS. PACKED OFF AT 9230' I-PICKED UP AND LAID DOWN 1 JOINT TO 9186' -WORKED PIPE AND ATTEMPTED TO RE-ESTABLISH CIRCULATION. DISCUSSED WITH WTLAND DECISION WAS 1MADE TO PULL AND LAY DOWN THE 7" CASING STRING AND MAKE A CLEAN OUT RUN. 04:30 - 07:00 2.50 CASING N DPRB 9,287.00 INTI PULL AND LAY DOWN 7",26 LB/FT VAMTOP. CASING. _ : 1-FROM 9230'TO 8509'MD. I-UP WEIGHT= 190K LBS; DOWN WEIGHT= 135K LBS. i-ROLLED PUMP AT 63 GPM;875 PSI WHILE PULLING. -PULLED UP TO 110K LBS OVER TO GET PIPE MOVING. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 31 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type:RE-ENTER-ONSHORE(RON) I Start Date:8/6/2011 End Date:9/12/2011 X3-00Y79-C(5,866,360.00) Project: Prudhoe Bay Site: PB R Pad Rig Name/No.:NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 07:00 - 08:30 1.50 CASING N DPRB 9,287.00 INTI CIRCULATE A BOTTOMS UP ABOVE THE TOP OF THE HRZ. -STAGE PUMPS UP TO 294 GPM;830 PSI. 08:30 - 10:00 1.50 CASING N DPRB 9,287.00 INTI RIG DOWN FRANKS FILL UP TOOL. RIG DOWN 350 TON ELEVATORS AND SLIPS. CHANGE BAILS AND RIG UP SIDE-DOOR ELEVATORS. CLEAN AND CLEAR RIG FLOOR AND PREP FOR PULLING CASING. 10:00 - 12:00 2.00 CASING N DPRB 9,287.00 INTI CONTINUE TO PULL AND LAY DOWN 7",26 LB/FT VAMTOP CASING. -FROM 8509'TO 8325'MD. -UP WEIGHT=210K LBS;DOWN WEIGHT= 145K LBS. 12:00 - 16:30 4.50 CASING N DPRB 9,287.00 INTI CONTINUE TO PULL AND LAY DOWN 7",26 LB/FT VAMTOP CASING. -FROM 8325'TO 6475'MD. -UP WEIGHT=170K LBS;DOWN WEIGHT= 130K LBS. -NO OVER PULLS NOTED FROM 8325 TO 9 5/8"WINDOW AT 6515' -MONITOR THE WELL FOR 10 MINUTES AT •THE CASING WINDOW. -NO FLOW. 16:30 - 18:00 1.50 --CASING N DPRB 9,287.00 INTI CIRCULATE A BOTTOMS UP AT THE 95/8" • CASING WINDOW. -340 GPM;530 PSI. -PUMPED 225 BBLS OF 10.5 PPG LSND. -MONITORED THE WELL FOR 10 MIN. -NO FLOW. SLOW PUMP RATES: 1. -TMD=6475' I I -PUMP 1 --2 BPM AND 170 PSI;3 BPM AND i ' 200 PSI. -PUMP 2--2 BPM AND 160 PSI;3 BPM AND 200 PSI. 18:00 - 00:00 6.00 CASING N DPRB 9,287.00 INTI CONTINUE TO PULL AND LAY DOWN 7",26 LB/FT CASING. -FROM 6475'TO 3154'MD. -UP WEIGHT=95K LBS;DOWN WEIGHT= 90K LBS. 9/1/2011 00:00 - 07:00 7.00 CASING N DPRB 9,287.00 INTI CONTINUE TO PULL AND LAY DOWN 7",26 LB/FT CASING. -FROM 3154'MD TO SHOE TRACK. -WATERCOURSES ON HYDRO FORM • CENTRALIZERS ARE PACKED OFF. -CLEAN AND CLEAR RIG FLOOR. CUT AND LAY DOWN SHOE TRACK. PJSM WITH RIG CREW AND CAMERON WELLHEAD TECHS. -RIG UP WACHS CUTTER TO CUT BAKER LOCKED SHOE TRACK. -DRAIN MUD IN SHOE TRACK. -CUT AND LAY DOWN SHOE TRACK JOINTS. 07:00 - 08:30 1.50 CASING N DPRB 9,287.00 INTI RIG DOWN CASING RUNNING EQUIPMENT. 08:30 - 10:00 1.50 CASING N DPRB 9,287.00 INTI SERVICE TOP DRIVE. • FLUSH AND DRAIN BOP STACK. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 32 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 8/6/2011 End Date:9/12/2011 X3-00YT9-C(5,866,360.00) Project:Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor NABORS ALASKA DRILLING INC. UWI: Active Datum:R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 10:00 - 13:30 3.50 BOPSUR N ' DPRB 9,287.00 INT1 ICHANGE UPPER PIPE RAMS TO 3 V2" &% ,,/BRS. PJSM WITH RIG CREW. -CHANGE UPPER RAMS FROM 7"TO 3 1/2"X I 6"VBRS. DUMPING 290 BBLS OF 10.5 PPG MUD IN THE PITS. DILUTE WITH 290 BBLS OF FRESH 10.5 PPG MUD FROM MI. USE THE DUMPED 290 BBLS OF 10.5 PPG l MUD TO REPLACE THE 290 BBLS OF 10.2 PPG CONTINGENCY MUD ON LOCATION. 13:30 - 15:00 1.50 BOPSUR N DPRB 9,287.00 ' INT1 RIG UP TO TEST BOPS. -PICK UP TEST JOINT AND MAKE UP TEST EQUIPMENT. 15:00 - 20:00 5.00 BOPSUR N DPRB 9,287.00 INTI TEST BOPE PER AOGCC REG JI.AT1Qt AND BP ADWOP POLICY. PRESSURE TESTED TO 250 PSI LOW AND 3500 PSI HIGH FOR 5 CHARTED MINUTES EACH. I -TESTED ALL CHOKE MANIFOLD VALVES(16 TOTAL). -MANUAL CHOKE AND MANUAL KILL VALVES. -HCR CHOKE AND HCR KILL VALVES. I -4"FULL OPENING SAFETY VALVE. l, -4"DART VALVE. -AIR ACTUATED IBOP ON TOP DRIVE. -MANUAL IBOP ON TOP DRIVE. I-BLIND/SHEAR RAMS. 1-UPPER 3 1/2"x 6"VBRS WITH 4"TEST JOINT. LOWER 2 7/8"x 5"VBRS WITH 4"TEST JOINT. I-ANNULAR PREVENTER WITH 4"TEST JOINT. I I I-SUPER CHOKE AND MANUAL BEAN CHOKE. -250 PSI LOW AND 2000 PSI HIGH FOR 5 I j I CHARTED MINUTES. CLOSING TIMES: -ANNULAR CLOSED IN 26 SEC. -UPPER VBRS CLOSED IN 7 SEC. I -BLIND/SHEAR RAMS CLOSED IN 14 SEC. -LOWER VBRS CLOSED IN 7 SEC. I-HCR CHOKE AND KILL CLOSED IN 1 SEC. PERFORMED AN ACCUMULATOR DRAW DOWN TEST. -13 SEC TO 200 PSI. ! I-85 SEC TO FULL PRESSURE. 5 BOTTLES WITH 1900 PSI. TESTS WITNESSED BY BP WSL AND NABORS I ITOOLPUSHER. , AOGCC,MATT HERRERA,WAIVED THE ' STATE'S RIGHT TO WITNESS THE TEST ON ' 8/31/2011. 20:00 - 21:00 I 1.00 BOPSUR N DPRB 9___ RIG DOWN INT1 RIG DOWW N BOP TEST EQUIPMENT. BLOW DOWN TOP DRIVE AND CHOKE LINES. -PULL TEST PLUG AND INSTALL WEAR RING. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 33 of 46 Operation Summary Report Common Wet Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 8/6/2011 End Date: 9/12/2011 X3-00YT9-C(5,866,360.00) Project: Prudhoe Bay Site: PB R Pad Rig Name/No.:NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) INTI PICK UP AND RUN IN THE HOLEWITH_BHA_ .21:00 - 23:00 2.00 STWHIP i N , DPRB 9,287.00 #10, 8 1/2"CLEAN OUT ASSY. ! -PJSM WITH RIG CREW AND SLB DD. -PICK UP BHA#10 AS FOLLOWS: -8 1/2"HYCALOG DTX619M-DG(RE-RUN) BIT. -NEAR BIT STABILIZER. -MWD -(2)6 V4"SPIRAL DRILL COLLARS. -(1)5"HWDP. -JARS -(4)5"HWDP. -'XO'BACK TO 4"DRILL PIPE OVERALL LENGTH=282.91'. MAX OD=8.50". 23:00 - 00:00 1.00 ! STWHIP N DPRB 9,287.00 INTI RUN IN THE HOLE WITH BH_A#10 81/_2_" CLEAN OUT ASSY. -FROM 282'TO 1224'MD. 9/2/2011 00:00 - 03:00 3.00 STWHIP N DPRB 9,287.00 INTI CONTINUE TO RUN IN THE HOLE WITH BHA #10,8 1/2"CLEAN OUT ASSY. -FROM 1224'TO 6491'MD. I • -SHALLOW HOLE TEST MWD AT 1224'MD. -450 GPM;566 PSI. -UP WEIGHT=115K LBS;DOWN WEIGHT= 95K LBS. 03:00 - 04:00 1.00 STWHIP N DPRB 9,287.00 INTI CUT AND SLIP 129'OF 1 1/4"DRILL LINE. 04:00 - 06:00 2.00 STWHIP N DPRB 9,287.00 INTI CIRCULATE AND CONDITION 10.5 PPG LSND 'MUD PRIOR TO EXITING 9 5/8"CASING I WINDOW. • i-550 GPM;2025 PSI. I-UP WEIGHT=115K LBS;DOWN WEIGHT= I95 LBS. -80 RPM;ROTATING WEIGHT= 100K LBS. -INCREASING BLACK PRODUCT CONCENTRATIONS IN MUD TO 10 LB/BBL. 06:00 - 12:00 6.00 STWHIP N DPRB 9,287.00 INTI ,WASH AND REAM WITH BHA#10,8 1/2" CLEAN OUT ASSY. I -FROM 6491'TO 7593'MD. -550 GPM;2450 PSI. -UP WEIGHT= 125K LBS;DOWN WEIGHT= 105K LBS. i -80 RPM;ROTATING WEIGHT= 110K LBS. 12:00 - 22:30 10.50 STWHIP N DPRB I 9,287.00 INTI CONTINUE TO REAM WITH BHA#10,8 1/2" CLEAN OUT ASSY. -FROM 7593'TO 8466'MD,100'ABOVE THRZ. -550 GPM;2860 PSI. -UP WEIGHT= 135K LBS;DOWN WEIGHT= 105K LBS. -80 RPM;ROTATING WEIGHT= 115K LBS. 22:30 - 23:30 1.00 STWHIP N DPRB 9,287.00 INTI CIRCULATE AND CONDITION MUD. -550 GPM;2680 PSI. -PUMPED 560 BBLS OF 10.5 PPG LSND. -MONITOR WELL FOR 10 MIN. -NO FLOW. SLOW PUMP RATES: -TMD=8466' -PUMP 1 --2 BPM AND 220 PSI;3 BPM AND 300 PSI. -PUMP 2--2 BPM AND 220 PSI;3 BPM AND 300 PSI. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 34 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 8/6/2011 End Date: 9/12/2011 X3-00YT9-C(5,866,360.00) Project: Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum:R-12©55.29ft(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 STWHIP N DPRB 9,287.00 INTI SHORT TRIP BACK TO THE WINDOW. -FROM 8466'TO 7996'MD, PULLING ON ELEVATORS. • -UP WEIGHT= 140K LBS; DOWN WEIGHT= 105K LBS. -ENCOUNTERED SOME TIGHT HOLE. I -PULLED UP TO 35K LBS OVER AT: -8266'AND 8088'MD. • -WORKED THROUGH AND WIPED TIGHT • SPOTS. 9/3/2011 00:00 - 01:00 1.00 STWHIP N DPRB 9,287.00 INTI CONTINUE SHORT TRIP BACK TO THE I WINDOW. I I -FROM 7966'TO 6515'MD, PULLING ON ELEVATORS. -UP WEIGHT= 120K LBS; DOWN WEIGHT= 100K LBS. -ENCOUNTERED SOME TIGHT HOLE. -PULLED UP TO 35K LBS OVER AT: • -7750',7535'AND 7493'MD. J, -WORKED THROUGH AND WIPED TIGHT • SPOTS. I I -DUMPED AND DILUTED WITH 290 BBLS OF STWHIP r N DPRB NEW 10.5 LSND. 01:00 - 02:00 1.00 1 1 9,287.00 INT1 CIRCULATE A BOTTOMS UP AT THE 9 5/8" 1 CASING WINDOW. -500 GPM;1820 PSI. I , I-UP WEIGHT= 120K LBS;DOWN WEIGHT= 100K LBS. I 1-80 RPM;ROTATING WEIGHT=100K LBS. 02:00 - 03:30 1.50 STWHIP N 1 DPRB 9,287.00 INTI 'RUN IN THE HOLE WITH BHA#10,8 1/2" CLEAN OUT ASSY. 1 -FROM 6515'TO 8466'MD. -WASHED AND REAMED LAST STAND DOWN. I -500 GPM;2765 PSI. -TOOK 20K LBS AT 8133'MD. -WIPED TIGHT SPOT. 03:30 - 06:00 2.50 STWHIP N DPRB 9,287.00 I INTI WASH AND REAM WITH BHA#10,8 1/2" CLEAN OUT ASSY. 1 -FROM 8466'TO 8550'MD. -550 GPM;2600 PSI. -UP WEIGHT= 125K LBS;DOWN WEIGHT= 100K LBS. -150 RPM;ROTATING WEIGHT=115K LBS. -REAM AND WASH BACK UP TO 8466'MD. 06:00 - 08:30 2.50 STWHIP N DPRB 9,287.00 INTI CIRCULATE A BOTTOMS UP. -550 GPM;2585 PSI. -120 RPM;ROTATING WEIGHT= 115K LBS. I -UP WEIGHT= 120K LBS;DOWN WEIGHT= I 100K LBS. -CLAY BALLS AND GROUND UP SHALE ON BOTTOMS UP. PUMPED A 35 BBL WEIGHTED SWEEP. -11.5 PPG WITH SUPER SWEEP. 550 GPM;2662 PSI -HOLE CLEANED UP AFTER SWEEP CAME BACK. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 35 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/6/2011 End Date: 9/12/2011 X3-00YT9-C(5,866,360.00) Project: Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum: R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 08:30 - 12:00 3.50 STWHIP N DPRB 9,287.00 1 INTI CONTINUE WASH AND REAM WITH BHA#10, 8 1/2"CLEAN OUT ASSY. • • -FROM 8466'TO 8730'MD. -550 GPM;2690 PSI. -UP WEIGHT=130K LBS;DOWN WEIGHT= 120K LBS. • -150 RPM;ROTATING WEIGHT=125K LBS. 12:00 - 15:00 3.00 STWHIP N DPRB 9,287.00 INTI CONTINUE WASH AND REAM WITH BHA#10, 8 1/2"CLEAN OUT ASSY. -FROM 8730'TO 8840'MD. -550 GPM;2685 PSI. -UP WEIGHT= 135K LBS;DOWN WEIGHT= 122K LBS. -120 RPM;ROTATING WEIGHT=127K LBS_. 15:00 - 16:00 1.00 STWHIP N DPRB 9,287.00 INTI CHANGE OUT A SWAB ON MUD PUMP#1. -CONTINUE TO WORK STAND AND CIRCULATE. -290 GPM;940 PSI. -115 RPM;ROTATING WEIGHT=127K LBS. 16:00 - 00:00 8.00 STWHIP N DPRB 9,287.00 INTI CONTINUE WASH AND REAM WITH BHA#10, 8 1/2"CLEAN OUT ASSY. I -FROM 8840'TO 9146'MD. -550 GPM;2700 PSI. -UP WEIGHT= 163K LBS;DOWN WEIGHT= 112K LBS. -150 RPM; ROTATING WEIGHT= 125K LBS. -TORQUE ON BOTTOM=6.2K FT-LBS TO 8.5K FT-LBS. MUD WEIGHT= 10.6 PPG. 1 PACKED OFF AT 8950'AND 9020'MD. 1 I-PICKED UP AND REDUCED PUMPS WHILE • 1 WORKING TIGHT HOLE. SLOW PUMP RATES: -TMD=8743' -PUMP 1 --2 BPM AND 190 PSI;3 BPM AND 270 PSI. I -PUMP 2--2 BPM AND 200 PSI;3 BPM AND 9/4/2011 00:00 03:00 3.00 STWHIP N DPRB 270 PSI. - 9,287.00 INT1 CONTINUE WASH AND REAM WITH BHA#10, 1 8 1/2"CLEAN OUT ASSY. -FROM 9146'TO 9215'MD. -550 GPM;2720 PSI. -UP WEIGHT= 163K LBS;DOWN WEIGHT= 112K LBS. -150 RPM;ROTATING WEIGHT= 125K LBS. -TORQUE ON BOTTOM=5.5K FT-LBS TO 7.2K FT-LBS. 03:00 - 04:00 1.00 STWHIP N DPRB 9,287.00 INTI CIRCULATE A 40 BBL WEIGHTED SWEEP. -11.6 PPG WITH SUPER SWEEP. -550 GPM;2790 PSI. 1-SWEEP CAME BACK 100 BBLS LATE BASED ON STROKES. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 36 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 8/6/2011 End Date: 9/12/2011 X3-00YT9-C(5,866,360.00) Project: Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum: R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 04:00 06:00 2.00 STWHIP N DPRB 9,287.00 INTI j CONTINUE WASH AND REAM WITH BHA#10, 8 1/2"CLEAN OUT ASSY. -FROM 9215'TO 9300'MD. -550 GPM;2738 PSI. -UP WEIGHT= 165K LBS;DOWN WEIGHT= 115K LBS. -150 RPM;ROTATING WEIGHT= 125K LBS. -TORQUE ON BOTTOM=5.2K FT-LBS TO 6.0K • FT-LBS. -MUD WEIGHT IN=10.6 PPG 06:00 - 10:30 4.50 STWHIP N DPRB 9,287.00 INTI CONTINUE WASH AND REAM WITH BHA#10, 8 1/2"CLEAN OUT ASSY. -FROM 9300'TO 9594'MD. -550 GPM;2850 PSI. -UP WEIGHT=175K LBS;DOWN WEIGHT= 115K LBS. I -150 RPM;ROTATING WEIGHT=127K LBS. -TORQUE ON BOTTOM=5.5K FT-LBS TO 6.3K FT-LBS. -WEIGHT UP MUD TO 10.7 PPG. SLOW PUMP RATES: I -TMD=9594';TVD=7741'. -PUMP 1 --2 BPM AND 300 PSI;3 BPM AND 390 PSI. -PUMP 2--2 BPM AND 310 PSI;3 BPM AND 400 PSI. 10:30 - 16:30 6.00 STWHIP N DPRB 9,287.00 INTI CONTINUE WASH AND REAM WITH BHA#10, 8 1/2"CLEAN OUT ASSY. I -FROM 9594'TO 9914'MD. I-550 GPM;3030 PSI. I-UP WEIGHT= 182K LBS;DOWN WEIGHT= 116K LBS. -150 RPM;ROTATING WEIGHT= 137K LBS. -TORQUE ON BOTTOM=5.5K FT-LBS TO 6.3K FT-LBS. � WEIGHT UP MUD TO 10.9 PPG. PUMPED A 40 BBL WEIGHTED SWEEP AT 9876'MD. 11.8 PPG WITH SUPER SWEEP. -50%INCREASE IN CUTTINGS NOTED AT SHAKERS. PUMPED A 40 BBL HIGH-VIS SWEEP AT 9895' MD. -250-VIS FLOWZAN SWEEP. -CHANGE OUT SWAB ON MUD PUMP#2. CONTINUE TO CIRCULATE OUT SWEEP. 15%INCREASE IN CUTTINGS NOTED AT SHAKERS. 1 SLOW PUMP RATES: -TMD=9780';TVD=7897'. -PUMP 1 --2 BPM AND 290 PSI;3 BPM AND 400 PSI. -PUMP 2--2 BPM AND 290 PSI;3 BPM AND 380 PSI. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 37 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 8/6/2011 End Date: 9/12/2011 X3-00YT9-C(5,866,360.00) Project: Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum: R-12©55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 16:30 - 22:30 6.00 STWHIP N DPRB 9,287.00 INTI CONTINUE WASH AND REAM WITH BHA#10, 8 1/2"CLEAN OUT ASSY. -FROM 9914'TO 10,441'MD. -450 GPM;2400 PSI. -UP WEIGHT=210K LBS;DOWN WEIGHT= 117K LBS. -120 RPM;ROTATING WEIGHT=143K LBS. -TORQUE ON BOTTOM=7.5K FT-LBS. -WEIGHT UP MUD TO 11.0 PPG. SLOW PUMP RATES: -TMD=9946';TVD=8074'. -PUMP 1 --2 BPM AND 310 PSI;3 BPM AND 420 PSI. -PUMP 2--2 BPM AND 320 PSI;3 BPM AND 420 PSI. 22:30 - 23:00 0.50 STWHIP N DPRB 9,287.00 INTI WASH TO TD AT 10,449'MD. -FROM 10,441'TO 10,449'MD. -450 GPM;2400 PSI. -UP WEIGHT=200K LBS;DOWN WEIGHT= 117K LBS. -SET DOWN 5K ON BOTTOM. STWHIP N DPRB -PICK UP TO 10,441'AND RACK BACK STAND. 23:00 - 00:00 1.00 9,287.00 INTI CIRCULATE SWEEPS AND CLEAN HOLE. -RECIPROCATING FROM 10,441'TO 10,344' MD. -450 GPM;2400 PSI. -120 RPM;7.5K FT-LBS TORQUE. PUMPED A 40 BBL HIGH-VS SWEEP -250 VIS FLOWZAN WITH SUPER SWEEP. PUMPED A 40 BBL WEIGHTED SWEEP. ;-12.0 PPG WITH SUPER SWEEP. ;-PUMPED AS SOON AS THE HIGH-VIS (SWEEP LEFT THE BIT. 9/5/2011 00:00 - 01:30 1.50 STWHIP N DPRB 9,287.00 INTI CONTINUE TO CIRCULATE SWEEPS AND CLEAN HOLE. -RECIPROCATING FROM 10,441'TO 10,344' MD. -450 GPM;2400 PSI. -120 RPM;7.5K FT-LBS TORQUE. 15%INCREASE IN CUTTINGS WITH HIGH-VIS ;SWEEP AT SHAKERS. I-SWEEP ARRIVED 120 BBLS LATE BASED ON • STROKES. 50%INCREASE IN CUTTINGS WITH WEIGHTED SWEEP AT SHAKERS. -SWEEP ARRIVED 120 BBLS LATE BASED ON STROKES. CONTINUE TO SEE LARGE SHALE SPLINTERS AND GROUND UP SHALE AFTER SWEEPS. PUMPED 1600 BBLS-3 BOTTOMS UP. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 38 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/6/2011 End Date:9/12/2011 X3-00YT9-C(5,866,360.00) Project:Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum:R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task I Code NPT NPT Depth Phase Description of Operations (hr) (ft) 01:30 - 02:00 t 0.50 STWHIP N DPRB 9,287.00 INTI SHORT TRIP TO THE 95/8"CASING WINDOW WITH BHA#10,8 1/2"CLEAN OUT ASSY. -FROM 10,441'TO 10,242'MD. -MONITOR WELL FOR 10 MIN. -NO FLOW. -PULL OUT OF THE HOLE ON ELEVATORS. -PULLED 2 STANDS AND THEN STARTED SWABBING WITH 25K OVER PULLS. 02:00 - 07:00 5.00 STWHIP N DPRB 9,287.00 INTI CONTINUE SHORT TRIP TO 9 5/8"WINDOW, PUMPING OUT OF THE HOLE. -FROM 10,242'TO 8278'MD. -ROLLING PUMPS AT 1.5 BPM TO REDUCE SWABBING. -25K LBS OVER PULL AND SWABBING NOTED FROM 9320'TO 9200'MD. -INCREASED PUMP RATE TO 168 GPM; 455 PSI. -NO OVER PULLS OR SWABBING NOTED WITH INCREASED PUMP RATE. 07:00 - 08:00 1.00 STWHIP N DPRB 9,287.00 INTI CIRCULATED A BOTTOMS. -550 GPM;2813 PSI. -80 RPM;4.9K FT-LBS TORQUE. 08:00 - 09:30 1.50 STWHIP N DPRB 9,287.00 INTI CONTINUE SHORT TRIP TO 9 5/8"WINDOW ON ELEVATORS. -FROM 8278'TO 6535'MD. -UP WEIGHT= 125K LBS;DOWN WEIGHT= 90K LBS. 1-25K LBS OVER PULL AT: -6756',6652'AND 6626' -WORKED AND WIPED EACH DEPTH. 09:30 - 11:00 1.50 STWHIP N DPRB 9,287.00 INTI CIRCULATE AND CONDITION AT THE 9 5/8" CASING WINDOW. -550 GPM;2813 PSI. -80 RPM;3.4K FT-LBS TORQUE. -PUMPED A 40 BBL NUT PLUG SWEEP. -25%INCREASE IN CUTTINGS NOTED AT THE SHAKERS. 11:00 - 12:00 1.00 STWHIP N DPRB 9,287.00 INTI CLEAN AND CLEAR THE RIG FLOOR. SERVICE AND INSPECT THE IRON ROUGHNECK AND TOP DRIVE. 12:00 - 14:30 2.50 STWHIP N DPRB 9,287.00 INTI !RUN IN THE HOLE WITH BHA#10,8 1/2" CLEAN OUT ASSY. -FROM 6535'TO 10,346'MD. -UP WEIGHT=190K LBS;DOWN WEIGHT= 114K LBS. -NO PROBLEMS NOTED ON TRIP IN HOLE. DPRB 9,287.00 INTI 14:30 15:00 0.50 STWHIP N WASH TO TD WITH BHA#10.-FROM 10,346'TO 10,444'MD. -450 GPM;2460 PSI. -5'OF FILL. -WASH AND REAM FROM 10,444'TO 10,449' MD. -450 GPM;2500 PSI ON BOTTOM,2460 PSI OFF BOTTOM. -100 RPM;7K FT-LBS TORQUE. I-UP WEIGHT= 185K LBS;DOWN WEIGHT= 117K LBS. -ROTATING WEIGHT= 147K LBS. -TAGGED BOTTOM WITH 10K LBS WEIGHT ON BIT. PICKED UP AND LOST RETURNS. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 39 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:8/6/2011 End Date: 9/12/2011 X3-00YT9-C(5,866,360.00) Project:Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum: R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs I Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 15:00 - 16:30 1.50 I STWHIP N DPRB 9,287.00 INTI CIRCULATE TO KEEP HOLE FULL AND ESTABLISH LOSS RATES. -224 GPM;830 PSI. -NO RETURNS BUT ABLE TO KEEP THE HOLE FULL. ESTABLISH STATIC LOSS RATE WHILE RECIPROCATING. -5BPH. -UP WEIGHT=220K LBS;DOWN WEIGHT= 117K LBS. TOTAL LOSSES TO WELLBORE= 132 BBLS. TOOK ON 290 BBLS OF 10.9 PPG CONTINGENCY FLUID TO THE PITS AND ORDERED ANOTHER 290 BBLS FROM MI. 16:30 - 19:30 3.00 I STWHIP i N DPRB 9,287.00 INTI PULL OUT OF THE HOLE WITH BHA#10 ON ELEVATORS. -FROM 10,449'TO 6491'MD. -UP WEIGHT= 185K LBS;DOWN WEIGHT= 114K LBS. -PULLED 25K OVER AT 8962'MD. -WORKED AND WIPED SPOT. -FILLING THE HOLE FROM THE TRIP TANK WITH 10.9 PPG LSND. -MONITORED THE WELL FOR 10 MIN AT THE 9 5/8"CASING WINDOW. -WELL IS STATIC. 19:30 22:00 2.50 STWHIP N DPRB 9,287.00 INTI CONTINUE TO PULL OUT OF THE HOLE WITH BHA#10 ON ELEVATORS. -FROM 6491'TO 285'MD. MONITOR THE WELL FOR 10 MIN BEFORE PULLING THE BHA. -WELL IS STATIC. 122:00 - 23:00 r 1.00 STWHIP N DPRB 9,287.00 INTI LAY DOWN BHA#10, 8 1/2"CLEAN OUT ASSY. -PJSM WITH RIG CREW AND SLB DD. -CHANGE ELEVATORS TO 5". -LAY DOWN BHA. -BIT DULL GRADE: 1 -3-BT-T-X-I-NO- TD. 23:00 - 00:00 1.00 BOPSUR N DPRB 9,287.00 INTI FLUSH BOP STACK IN PREPARATION FOR CHANGING UPPER PIPE RAMS. -PJSM WITH RIG CREW. -CHANGE ELEVATORS BACK TO 4". -PICK UP SINGLE AND BOP STACK FLUSHING TOOL-"JOHNNY WHACKER". -FLUSH BOP STACK CLEAN. -LAY DOWN SINGLE JOINT AND JOHNNY WHACKER. -BLOW DOWN TOP DRIVE. TOTAL LOSSES TO WELL FOR THE DAY= 132 BBLS. 9/6/2011 ;00:00 - 00:30 0.50 WHSUB N DPRB 9,287.00 INT1 PULL WEAR BUSHING. 00:30 - 03:00 2.50 BOPSUR N DPRB 9,287.00 INTICHANGEOUT UPPER PIPE RAMS FROM 3-1/2" - X 6"VERS TO 7"FIXED RAMS 03:00 - 05:00 2.00 BOPSUR N DPRB 9,287.00 INTI PRESSURE TEST UPPER PIPE RAMS WITH 7" TEST JOINT TO250 PSI LOW AND 35002SI HIGH FOR 5 MIN EACH(SEE ATTACHED CHART). Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 40 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 8/6/2011 End Date: 9/12/2011 X3-00YT9-C(5,866,360.00) Project:Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:R-12©55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 05:00 - 07:30 2.50 CASING N DPRB 9,287.00 INTI RIG UP TO RUN 7"CASING. 07:30 - 11:30 4.00 CASING N DPRB 9,287.00 INTI RUN 7" 2611, L-80,TC-II CASING F/SURFACE T/126'MD. CHECK FLOATS. CONTINUE IN HOLE T/2000'MD. MAKEUP TC-II CONNECTIONS T/10,100 FT-LBS. FILL PIPE EVERY JOINT WHILE RUNNING IN THE HOLE. BREAK CIRCULATION EVERY 10TH JOINT. 80' SHOE TRACK HAS TWO CENTRALIZERS AND FIRECT JOINT ABOVE FLOAT COLLAR HAS ONE CENTRALIZER. 11:30 - 12:00 0.50 CASING N DPRB 9,287.00 INTI CIRCULATE ONE CASING VOLUME;76 BBLS @ 3.5 BPM,220 PSI. 12:00 - 12:30 0.50 CASING N DPRB j 9,287.00 INTI CONDUCT WELL CONTROL DRILL AND AAR WITH RIG CREW AND NABORS CSG REP. 12:30 - 16:00 3.50 CASING N DPRB 9,287.00 INTI RUN 7",26#, L-80,TC-II CSG F/2000'MD T/ 4000'MD. 16:00 - 16:30 0.50 CASING N DPRB 9,287.00 INTI CIRCULATE ONE CASING VOLUME;149 BBLS @ 3.5 BPM,325 PSI. 5 KLBS IMPROVEMENT IN DRAG OBSERVED FOLLOWING CIRCULATION. 16:30 - 18:00 1.50 CASING i N DPRB I 9,287.00 INTI RUN 7",26#, L-80,TC-II CSG F/4000'MD T/ 5100'MD. 18:00 19:00 1.00... CASING N DPRB 9,287.00 INTI CIRCULATE ONE CASING VOLUME;181 BBLS @ 3.5 BPM,400 PSI. 5 KLBS IMPROVEMENT IN DRAG OBSERVED FOLLOWING CIRCULATION. 19:00 - 21:00 2.00 CASING N DPRB 9,287.00 INTI RUN 7",26#, L-80,TC-II CSG F/5100'MD T/ 9-5/8"CSG SHOE @ 6500'MD. UP WEIGHT= 160 KLBS,DOWN=125 KLBS. 21:00 - 00:00 3.00 CASING N DPRB 9,287.00 INTI CIRCULATE AND CONDITION MUD PRIOR TO ENTERING OPENHOLE. CIRCULATE UNTIL MW IN/OUT=11 PPG. PUMP 35 BBL,7.5% STEEL LUBE PILL STS. DUMP STEEL LUBE OVERBOARD UPON RETURN TO SURFACE. INCREASE LUBRICATION PERCENTAGE FROM 2%TO 2.5%IN ACTIVE PIT SYSTEM WITH ONE TOTE OF LO TORQ. RECIPROCATE ONE JOINT WHILE CIRCULATING. 10 KLBS IMPROVEMENT IN DRAG OBSERVED FOLLOWING CIRCULATION AND ADDITION OF LUBRICANTS. NO LOSSES OBSERVED WHILE CIRCULATING. 9/7/2011 00:00 - 00:30 0.50 CASING N DPRB 9,287.00 INTI CONTINUE TO CIRCULATE&CONDITION MUD PRIOR TO ENTERING OPENHOLE. FINAL MW IN/OUT=11 PPG. ACTIVE PITS SYSTEM LUBRICATION=2.5%. 00:30 - 03:30 3.00 CASING N DPRB 9,287.00 INTI RUN 7",26#, L-80 TC II FROM 6500'MD TO 8335'MD(230'ABOVE THRZ @ 8562'MD). NO TIGHT SPOTS ENCOUNTERED. MAKEUP TC-II CONNECTIONS TO 10,100 FT-LBS. 03:30 - 05:30 2.00 CASING N DPRB 9,287.00 INTI CIRCULATE HOLE CLEAN ABOVE THRZ. PUMP 1.5 X BOTTOMS UP(415 BBLS). STAGE PUMPS UP TO 6 BPM,700-900 PSI. NO LOSSES OBSERVED WHILE CIRCULATING. 05:30 - 06:30 1.00 CASING N DPRB 9,287.00 INTI RUN 7",26#, L-80,TC-II FROM 8335'MD TO 9300'MD(PREVIOUSLY ACHIEVED DEPTH WITH CSG PRIOR TO HOLE PROBLEMS). END NON-PRODUCTIVE TIME. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 41 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 8/6/2011 End Date: 9/12/2011 X3-00YT9-C(5,866,360.00) Project:Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) INTI 1,RUN 7",26#,L-80,TC-II FROM 9300'MD TO 06:30 07:30 1.00 CASING P I --T0444'MD,8508'TVD(FINAL SET DEPTH). ' ENCOUNTER TIGHT HOLE. UNABLE TO WORK CASING DEEPER(PLANNED SET DEPTH=10447'MD). 07:30 - 09:00 1.50 CASING P INTI ATTEMPT TO BREAK CIRCULATION WHILE 'TRYING TO WORK CASING DOWN. UNALBE TO CIRCULATE OR MOVE CSG UP OR DOWN. FREE UP WEIGHT=230 KLBS, DOWN= 150 KLBS. WORK PIPE BETWEEN 340 KLBS UP AND 80 KLBS DOWN. 09:00 - 15:00 !: 6.00 CASING P INTI SLOWLY BREAK CIRCULATION AND RAMP UP PUMPS FROM 15 GPM,650 PSI TO FULL CIRCULATION RATE OF 256 GPM,700 PSI. HOOKLOAD INCREASED OVER TIME PERIOD I FROM 100 KLBS TO 175 KLBS WHILE FLOW ' PERCENTAGE GRADUALLY INCREASED FROM 4%TO 30%. 15:00 - 18:00 3.00 i CASING P + INT1 CIRCULATE AND CONDITION MUD FOR I CEMENTING;256 GPM,750 PSI. CUT WEIGHT l IN ACTIVE SYSTEM BACK FROM 11 PPG TO 10.8 PPG. FINAL YP=16. 18:00 19:00 t 1.00 CEMT P INTI RIG UP FOR CEMENTING. WELLSITE LEADERS CONFIRMED PROPER LOADING OF CEMENT PLUGS IN HEAD AND I FUNCTIONALITY OF TATTLE TAIL. 19:00 - 19:30 0.50 1 CEMT P INTI BREAK CIRCULATION AND RAMP UP PUMPS 'FROM 30 GPM,350 PSI TO 255 GPM,750 PSI. '19:30 - 20:00 0.50 CEMT N i SFAL 4.00 INTI NON-PRODUCTIVE TIME-WAIT ON SLB TO I TROOBLESHOOT ISSUE WITH PUMP TRUCK. 1CIRCULATE @ 255 GPM,750 PSI. 20:00 - 20:30 ; 0.50 CEMT P INTI PRE-JOB SAFETY MEETING WITH RIG CREW AND SLB CEMENTERS. CONTINUE TO , CIRCULATE @ 255 GPM,750 PSI. 20:30 - 23:30 3.00 CEMT i P I INTI BEGIN CEMENT JOB AT 21:10. BATCH MIX 15.8 PPG CEMENT. PUMP 5 BBLS 12.5 PPG MUDPUSH. SHUT DOWN AND PRESSURE TEST LINES TO 4500 PSI. PUMP 25 BBLS 12.5 PPG MUD PUSH @ 4.8 BPM,365 PSI. DROP BOTTOM PLUG. PUMP 86 BBLS 15.8 PPG , I CEMENT @ 5 BPM,450 TO 150 PSI. DROP_ TOP PLUG AND KICK OUT WITH 5 BBLS FRESH WATER. SWITCH TO RIG PUMPS& , I DISPLACE CEMENT WITH 390 BBLS 10.8 PPG MUD. CEMENT LIFT PRESSURE THROUGHOUT DISPLACEMENT FROM 120 PSI ` TO 495 PSI. BEGIN DISPLACEMENT AT 6 BPM. STAGE RATE DOWN TO 4.5 BPM @ 311 BBLS,3 BPM @ 350 BBLS&2 BPM @ 380 BBLS AWAY. 10 BBLS LOST TO FORMATION DURING JOB. BUMP PLUG ON SCHEDULE WITH 495 PSI. HOLD PRESSURE FOR FIVE ' MINUTES AND BLEED OFF. CHECK FLOATS FOR 10 MIN. NO FLOW UP CSG. CIP AT 23:20 Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 42 of 46 Operation Summary Report Common Well Name:R-12 AFE No Event Type:RE-ENTER-ONSHORE(RON) Start Date: 8/6/2011 End Date:9/12/2011 X3-00YT9-C(5,866,360.00) Project:Prudhoe Bay Site: PB R Pad Rig Name/No.:NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase I Description of Operations (hr) (ft) . 23:30 - 00:00 0.50 CASING P INTI ATTEMPT TO PRESSURE TEST 7"CASING TO 250 PSI LOW AND 3500 PSI HIGH. SURFACE LEAK OBSERVED AT CONNECTION BETWEEN CEMENTING HEAD AND CROSSOVER. NO FLOW OBSERVED UP 9-5/8"X 7"ANNULUS DURING PRESSURE TEST. 9/8/2011 00:00 - 00:30 0.50 CASING P INTI ATTEMPT TO PRESSURE TEST 7"CASING TO 250 PSI LOW AND 3500 PSI HIGH. SURFACE LEAK OBSERVED AT CONNECTION BETWEEN CEMENTING HEAD AND CROSSOVER. BLEED OFF PRESSURE AND CHECK FLOATS FOR 10 MIN. FLOATS HELD. 00:30 - 02:00 1.50 CASING P INTI RIG DOWN CEMENTING HEAD AND CROSSOVERS. RIG UP PUMP-IN SUB FOR CSG PRESSURE TEST. NOTE: CEMENT ACHIEVED 50 PSI COMPRESSIVE STRENGTH AT 1:45 AM. 02:00 - 03:00 1.00 CASING P INTI PRESSURE TEST 7"CSG TO 250 PSI LOW FOR 5 MIN AND 3500 PSI HIGH FOR 30 MIN. NO FLOW OBSERVED UP 9-5/8"X 7" ANNULUS DURING PRESSURE TEST. SEE ATTACHED PRESSURE TESTING DOCUMENTS. AUTHORIZATION TO PROCEED RECEIVED FROM WELLS TEAM LEADER. 03:00 - 07:00 4.00 CASING P INTI RIG DOWN CASING PUMP-IN SUB AND CROSSOVER. DRAIN 7"CASING AND BOP STACK FROM RIG FLOOR TO WELLHEAD. LIFT BOP STACK 3'. 07:00 - 08:00 1.00 CASING 'I P INTI CAMERON REP ONSITE TO SET 7"CSG SLIPS. NEUTRAL STRING WEIGHT= 175 KLBS. PICKUP TO 265 KLBS AND SET TYPE SB-3-N-L 10"X 7"EMERGENCY SLIPS WITH 90 ' • KLBS OVER. RUN IN LOCKDOWN SCREWS AND ENERGIZE PRIMARY SEAL IN SLIPS. 08:00 - 09:00 1.00 CASING P INTI CUT 7"CSG WITH WACHS CUTTER. LAYDOWN CUT 7"CSG JOINT(LENGTH= 40.16'). 09:00 - 09:30 0.50 BOPSUR P INTI NIPPLE DOWN SPACER SPOOL AND SETBACK BOP STACK ON STUMP IN CELLAR. 09:30 - 11:00 1.50 WHSUR P INTI DRESS CASING STUB AND INSTALL TYPE YB 9-1/2"C-BORE X 7"CASING PACKOFF. 11:00 - 14:00 3.00 WHSUR P INTI INSTALL NEW TYPE S3-YB 11"API 5000 PSI TUBING SPOOL. ENERGIZE SECONDARY SEAL. PRESSURE TEST CSG HANGER FLANGE/SEALS TO 250 PSI LOW AND 4000 PSI HIGH FOR FIVE MIN EACH(SEE ATTACHED CHARTS). 14:00 - 16:00 2.00 BOPSUR P INTI NIPPLE UP SPACER SPOOL,RISER AND BOP STACK. 16:00 - 17:00 1.00 WHSUR P INTI INSTALL SECONDARY ANNULUS VALVES ON NEW TUBING SPOOL. PRESSURE TEST TO 250 PSI LOW AND 3500 PSI HIGH FOR FIVE MIN EACH. 17:00 - 18:00 1.00 BOPSUR P INTI CLOSE BLIND RAMS&BLEED OFF ACCUMULATOR UNIT. CHANGEOUT UPPER PAPE RAMS FROM 7"TO 3-1/2"X 6"VARIABLE BORE RAMS, 18:00 - 19:00 1.00 BOPSUR P INTI RIGUP TO TEST BOPE. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 43 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type:RE-ENTER-ONSHORE(RON) Start Date: 8/6/2011 End Date: 9/12/2011 X3-00YT9-C(5,866,360.00) Project:Prudhoe Bay Site: PB R Pad Rig Name/No.:NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. I UWI: Active Datum:R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs (hr) Task Code NPT NPT Depth Phase (ft) Description of Operations 19:00 - 20:30 1.50 BOPSUR P INTI FUNCTION TEST BOP STACK COMPONENTS. PRESSURE TEST UPPER AND LOWER PIPE —RAMS WITH 4"&4-1/2"TEST JOINTS TOW PSI LOW AND 3500 PSI HIGH FOR FIVE MIN EACH(SEE ATTACHED CHARD. CLOSING TIMES FOR STACK COMPONENTS: -ANNULAR PREVENTER=22 SEC '-UPPER 3-1/2"X 6"VBR=8 SEC -LOWER 2-7/8"X 5"VBR=7 SEC -BLIND/SHEAR RAMS=14 SEC '-HCR KILL AND HCR CHOKE=1 SEC 20:30 - 00:00 3.50 DRILL P INTI MAKEUP 6-1/8"DIRECTIONAL DRILLING ASSY ' AND RIH T/229'. -6-1/8"HUGHES TRI-CONE VM-R18DX INSERT BIT W/3 X 12/32"NOZZLES,TFA=0.331) -1.5 DEG BENT HOUSING MUD MOTOR(0.7 GAL/REV)WITH PORTED FLOAT -DIR/RES/GR/DEN/NEU MWD TOOLS -MI SWACO WELL COMMANDER j CIRCULATION SUB. 9/9/2011 00:00 - 04:30 4.50 DRILL i P INTI TIH WITH 6-1/8"DIRECTIONAL DRILLING • ASSEMBLY FROM 229'TO FLOAT COLLAR AT 10358'MD. TAG FLOAT auxrCOTEAR WITH KLBS. UP WEIGHT= 180 KLBS, DOWN=100 KLBS. 04:30 06:30 2.00 DRILL P i INTI PUMP 75 BBLS FRESH WATER SPACER 50 BBL VISCOUS SPACER AND THEN DISPLACE I WELL FROM 10.8 PPG LSND TO 8.6 PPG FLO-PRO MUD;250 GPM,1800 PSI FINAL CIRC PRESSURE. SLOW PUMP RATES TAKEN AT 10,385'MD- 1 PUMP#1 2 BPM/740 PSI,3 BPM/920 PSI; I PUMP#2 2 BPM/700 PSI,3 BPM/860 PSI. 06:30 - 08:00 1.50 DRILL P INTI I SLIP AND CUT 77'DRILL LINE. SERVICE TOP 'DRIVE AND CROWN. INSPECT DRAWWORKS. 08:00 - 09:30 . 1.50 DRILL P INTI DRILL OUT SHOE TRACK FROM 10,358'TO 10,444'AND 20'OF NEW HOLE TO 10,470'. 1 PUMP AT 250 GPM WITH 1920 PSI ON.II - BOTTOM,1820 PSI OFF BOTTOM. ROTATE AT j 40 RPM WITH 6K TORQUE ON BOTTOM,4K 1 TORQUE OFF BOTTOM. WOB-10K. UP WEIGHT 162K, DOWN 127K,ROTARY 135K. 09:30 - 10:30 1.00 DRILL P I INTI CIRCULATE BOTTOMS UP AT 250 GPM WITH 1800 PSI. 10:30 - 12:00 1.50 DRILL P INTI PJSM. RIG UP FOR FIT. PERFORM FIT TO 10.1 PPG EMW WITH 690 PSI AT 8,508'TVD AND 8$I1PG MW IN THE HOLE. RIG DOWN. • Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 44 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 8/6/2011 End Date: 9/12/2011 X3-00YT9-C(5,866,360.00) Project: Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum:R-12©55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12:00 - 22:00 10.00 DRILL P PROD1_ ,DIRECTIONALLY DRILL 6-1/8"PRODUCTION H,QLEFROM 10470'MD TO 10856'MD(386'@ 39 FPH). 100%SLIDE DRILLING TO BUILD ANGLE FROM 25 DEG TO 60 DEG;250 GPM, PUMP PRESSURE(ON/OFF BOTTOM)= 1950-2050/1750-1850 PSI,175 BIT RPM,WOB= 15-20 KLBS. MW 8.5+IN/OUT,45 SEC/QT VIS. ACTUAL DRILLING TIME=8.57 HRS,AST= 7.43 HRS,ART=1.14 HRS SLOW PUMP RATES TAKEN AT 22:00,8.6 PPG MUD, 10850'MD,8802'TVD: MP#1: 2 BPM/ 1 790 PSI,3 BPM/900 PSI - MP#2: 2 BPM/780 PSI,3 BPM/900 PSI NOTE: CROSSED FAULT @ 10565'MD. NO LOSSES ENCOUNTERED. 22:00 - 00:00 2.00 DRILL P PROD1 DIRECTIONALLY DRILL 6-1/8"PRODUCTION HOLE FROM 10856'MD TO 10928'MD(72'@ 36 FPH). 250 GPM, PUMP PRESSURE (ON/OFF BOTTOM)=2000-2150/1800-1900 PSI, 40 RPM,215 BIT RPM,TORQUE(ON/OFF BTM) =9-10/8.5-9.5 KFT-LBS,WOB= 15-20 KLBS. MW 8.6 IN/OUT,45 SEC/QT VIS. ACTUAL DRILLING TIME= 1.13 HRS,AST=.47 HRS, ART= .66 HRS 9/10/2011 100:00 - 06:00 6.00: I DRILL P PROD1 1DIRECTIONALLY DRILL 6-1/8"PRODUCTION DOLE FROM 10928'MD TO 11108'MD(180'@ ITO FPI-I). 250 GPM, PUMP PRESSURE (ON/OFF BOTTOM)=2100-2200/1900-2000 PSI, 40-70 RPM,215-245 BIT RPM,TORQUE 1(ON/OFF BTM)=9.5-10.5/8.5-9.5 KFT-LBS, I WOB= 15-25 KLBS. MW 8.6 IN/OUT,45 SEC/QT VIS. ACTUAL DRILLING TIME=3.48 HRS,AST=0.6 HRS,ART=2.88 HRS. NO DYNAMIC LOSSES TO WELL WHILE DRILLING. 06:00 10:30 4.50 DRILL P PROD1 DIRECTIONALLY DRILL 6-1/8"PRODUCTION HOLE FROM 11108'TO 11205'MD(97 FPH @ 22 FPH). PUMP @ 250 GPM, PUMP PRESSURE(ON/OFF BOTTOM)= 12000-2150/1900-1950 PSI,40-70 RPM,215-245 1 BIT RPM,TORQUE(ON/OFF BOTTOM)= 113-14/11.5-13.5 KFT-LBS,WOB=5-15 KLBS. I MW 8.6 IN/OUT,45 SEC/QT VIS. ACTUAL DRILLING TIME=3.98 HRS,AST=0 HRS,ART 1=3.98 HRS. NOTICEABLE 2 KFT-LBS 1 INCREASE IN TORQUE OBSERVED. DECISION TO TRIP FOR NEW BIT. NO DYNAMIC LOSSES TO WELL WHILE DRILLING. 10:30 - 11:30 fi 1.00 DRILL P PROD1 CIRCULATE HOLE CLEAN FOR TRIP. PUMP 250 GPM,1950 PSI,70 RPM(245 RPM AT BIT), 11.5-12.5 KFT-LBS TORQUE WHILE RECIPROCATING FULL STAND. PU WEIGHT= 210 KLBS, DOWN=115 KLBS, ROT=140 KLBS. CHECK FOR FLOW ON BOTTOM. NO FLOW. MEASURED SLOW PUMP RATES @ 11205' MD,8961'TVD,8.6 PPG MW,2 BPM/3 BPM: MP#1: 600/800 PSI,MP#2:660/820 PSI. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 45 of 46 Operation Summary Report Common Well Name:R-12 AFE No Event Type:RE-ENTER-ONSHORE(RON) Start Date: 8/6/2011 End Date:9/12/2011 X3-00YT9-C(5,866,360.00) Project:Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum:R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) ,11:30 - 16:30 ' 5.00 DRILL P I PROD1 TOH FROM 11205'MD TO BHA @ 229'. NO TIGHT SPOTS ENCOUNTERED DURING TRIP. CHECK FOR FLOW AT 7"CSG SHOE AND PRIOR TO BHA ENTERING BOP STACK. WELL ' STATIC. 16:30 - 19:30 3.00 DRILL P 1 i PROD1 BREAK BIT(1/4"UNDER GAUGE). DOWNLOAD MWD DATA. VISUALLY INSPECT BHA COMPONENTS AND SCRIBE IN HOLE. NEW 6-1/8"HUGHES VM-R18DX INSERT BIT WITH(2) 12/32"AND(1) 10/32"NOZZLES ' MADE UP TO SAME BHA AS PROD HOLE BHA #1. 19:30 - 00:00 4.50 DRILL P PROD1 TRIP IN HOLE TO 9900'MD AT MIDNIGHT (PREVIOUSLY DRILLED MD=11205'MD). 9/11/2011 00:00 - 01:00 1.00 1 DRILL P PROD1 TIH FROM 9900'MD AT MIDNIGHT TO 10855' MD. NO TIGHT SPOTS ENCOUNTERED ON 1 TIH. 01:00 - 03:00 2.00 DRILL P 1 PROD1 WASH AND REAM FROM 10855'MD TO • PREVIOUSLY DRILLED MD OF 11205'MD. PUMP AT 250 GPM, PUMP PRESSURE 1950-2050 PSI,MAINTAIN DIFFERENTIAL PRESSURE<100 PSI. WOB=0-5 KLBS, I I j TORQUE=8.5-10.5 KFT-LBS @ 40 RPM,215 BIT RPM. 03:00 - 08:00 5.00 DRILL P I PROD1 DIRECTIONALLY DRILL 6-1/8"PRODUCTION HOLE FROM 11205'TO 11440'MD,9075'TVD � I TOTAL DEPTH(235'@ 30 FPH W/ i i ;CONNECTIONS). PUMP @ 250 GPM, PUMP PRESSURE(ON/OFF BOTTOM)= 2100-2450/2000-2100 PSI,60-80 RPM,235-255 BIT RPM,TORQUE(ON/OFF BOTTOM)= •- 111.5-12.5/9-10.5 KFT-LBS,WOB= 10-20 KLBS. I MW 8.6 IN/OUT. NO DYNAMIC LOSSES TO ! I WELL WHILE DRILLING. PU WEIGHT=210 ! I KLBS, DOWN=115 KLBS,ROT= 143 KLBS. ACTUAL DRILLING(ALL ROTATING)TIME= 3.87 HOURS. SLOW PUMP RATES @ 11440'MD,9075'TVD, 8.6 PPG MW,2 BPM/3 BPM: MP#1: 740/960 PSI,MP#2:750/980 PSI. 08:00 - 10:30 2.50 DRILL P 1 PROD1 CIRCULATE HOLE CLEAN(3 BOTTOMS UP) I WHILE RACKING BACK ONE STAND PER HOUR FOR FIRST 3 STANDS OFF BOTTOM FROM 11400'MD TO 11150'MD. FLOW CHECK I WELL. NO FLOW. PULL ONE STAND ON ELEVATORS TO 11042'MD. 10:30 - 13:00 2.50 EVAL P PROD1 MAD PASS LOG FROM 11042'MD TO 10670' MD. PUMP AT 250 GPM,2050 PSI,60 RPM, 235 BIT RPM,PULLING UP AT 300 FPH. 13:00 13:30 0.50 DRILL P ' PROD1 CONTINUE TO WASH OUT OF HOLE FROM 10670'MD TO 7"CSG SHOE AT 10385'MD. PUMP AT 250 GPM,2000-2050 PSI. NO TIGHT SPOTS ENCOUNTERED IN OPEN HOLE. Printed 9/26/2011 11:36:35AM North America -ALASKA- BP Page 46 of 46 Operation Summary Report Common Well Name: R-12 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 8/6/2011 End Date: 9/12/2011 X3-00YT9-C(5,866,360.00) Project:Prudhoe Bay Site:PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum: R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 13:30 - 15:30 2.00 DRILL P PROD1 DROP 1.76"BALL AND OPEN WELL COMMANDER CIRCULATION SUB(OPENED AT 2200 PSI). CIRUCLATE ONE BTMS UP AT 250 GPM,860 PSI. DROP 1.76"BALL AND CLOSE WELL COMMANDER SUB(CLOSED AT 2300 PSI). FLOW CHECK WELL. WELL STATIC. DROP 2-1/4"BALL TO DRIFT DRILLPIPE FOR LINER WIPER DART. SLOW PUMP RATES @ 10385'MD,8420'TVD, 8.6+PPG MW,2 BPM/3 BPM: MP#1: 640/860 PSI,MP#2:660/880 PSL 15:30 - 19:00 3.50 DRILL P PROD1 POOH FROM 10385'MD TO BHA AT 229'MD. FLOW CHECK WELL. 19:00 - 20:30 1.50 DRILL P PROD1 BREAK AND LAYDOWN 6-1/8"PROD HOLE BHA. 4 20:30 - 21:00 0.50 DRILL P PROD1 CLEAR RIG FLOOR AFTER TRIPPING. 21:00 - 00:00 3.00 EVAL ( P PROD1 HOLD PJSM. MIRU SLB E-LINE UNIT WITH AIR LINE WIPER AT RIG FLOOR. 9/12/2011 00:00 06:00 6.00 EVAL P PROD1 RUN IMAGE BEHIND CASING(IBC)LOG ON E-LINE FROM 7"CSG SHOE AT 10444'MD TO 6600'MD(100'BELOW 9-5/8"WINDOW)TO EVALUATE 7"CSG CEMENT AND BOREHOLE GEOMETRY IN INTERMEDIATE HOLE SECTION. STATIC HOLE LOSS= 15 BPH. NOTE: TOC IN 8-1/2"OH X 7"CSG ANNULUS FOUND AT 9344'MD(1100'ABOVE 7"CSG SHOE A 10444'MD). 06:00 - 07:00 1.00 EVAL P PROD1 RDMO SLB E-LINE UNIT. END DRILLING -- —�— EVENT. Printed 9/26/2011 11:36:34AM 410 North America -ALASKA- BP Page 1 of 4 Operation Summary Report Common Well Name: R-12 AFE No Event Type:COM-ONSHORE(CON) Start Date:9/12/2011 End Date:9/15/2011 X3-00YT9-C(1,283,640.00) Project:Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum: R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 9/12/2011 07:00 - 09:00 2.00 CASING P RUNPRD BEGIN COMPLETION EVENT. RIG UP TO RUN 4-1/2"PRODUCTION LINER. STATIC LOSSES TO WELLBORE= 15 BPH. I 09:00 - 12:30 3.50 CASING P RUNPRD HOLD PJSM. MAKEUP SHOE TRACK AND CHECK FLOATS. FLOATS HELD. RUN IN THE HOLE WITH 4-1/2",26#,13CR-85,VAMTOP LINER FROM SURFACE TO TOTAL LINER LENGTH 1200'. MAKEUP LINER HANGER AND LINER TOP PACKER WITH BAKER REP ON RIG FLOOR. MW IN/OUT=8.5+PPG. LINER WEIGHT=40 KLBS. 12:30 - 13:30 1.00 CASING P RUNPRD CIRCULATE 1-1/2 LINER VOLUMES AT 50 GPM,60 PSI. 13:30 - 20:30 7.00 CASING P RUNPRD RUN 4-1/2",26#,13CR-85,VAMTOP LINER i !FROM-1200'TO 7"CSG SHOE A_T 10375'MD. FILL PIPE EVERY 10 STANDS. 20:30 - 21:00 0.50 CASING P RUNPRD STAGE UP PUMPS FROM 42 GPM TO 210 GPM. CIRCULATE 1-1/2 LINER VOLUMES. PUMP PRESSURE AT 210 GPM=650 PSI. SLOW PUMP RATES AT 10375'MD,8457'TVD: MP#1 2 BPM/400 PSI,3 BPM/480 PSI -- MP #2 2 BPM/360 PSI,3 BPM/690 PSI 1- r - --- — ---_-_. i 21:00 - 22:00 1.00 CASING P ! • t RUNPRD RUN 4-1/2",26#,13CR-85,VAMTOP LINER j 1 FROM 10375'MD TO 11405'MD. MAKEUP BAKER CEMENTING HEAD AND ONE SINGLE JOINT DRILLPIPE. RIGUP CEMENTING LINE • TO HEAD. WASH LINER DOWN AT 85 GPM, 450 PSI. TAG BOTTOM AT 11440'MD. SLACKOFF 10 KLBS ON BOTTOM. FINAL PU WEIGHT=200 KLBS, DOWN= 125 KLBS. LOSSES WHILE RUNNING LINER IN HOLE= 15 BPH. FINAL SHOE LANDING DEPTH= 11438'MD, 9074'TVD. TOP OF LANDING COLLAR(PBTD) I = 11355'MD,9033'TVD. 1 TOP OF LINER AT 10249'MD, 8327'TVD(197' OVERLAP) 22:00 - 00:00 2.00 CASING P RUNPRD STAGE PUMPS UP FROM 42 GPM TO 250 BPM WHILE RECIPROCATING PIPE 10'. PUMP PRESSURE AT 250 GPM= 1075 PSI. 9/13/2011 00:00 - 00:30 0.50 CEMT P RUNPRD MIRU SLB CEMENTERS. HOLD PJSM. i CONTINUE TO RECIPROCATE PIPE 10'AND CIRCULATE AT 250 GPM,1100 PSI. Printed 9/26/2011 11:36:53AM North America -ALASKA- BP Page 2 of 4 Operation Summary Report Common Well Name: R-12 AFE No Event Type:COM-ONSHORE(CON) Start Date: 9/12/2011 End Date:9/15/2011 X3-00YT9-C(1,283,640.00) Project:Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum:R-12 @55.29ft(above Mean Sea Level) Date I From-To Hrs Task Code NPT j NPT Depth Phase Description of Operations (hr) I (ft) 00:30 - 02:00 1.50 CEMT P RUNPRD BEGIN CEMENT JOB AT 00:30. BATCH MIX 15.8 PPG CEMENT. PUMP 5 BBLS 12.0 PPG MUDPUSH. SHUT DOWN AND PRESSURE TEST LINES TO 4600 PSI. PUMP 20 BBLS 12.0 PPG MUD PUSH AT 4 BPM,300-600 PSI. PUMP 33 BBLS 15.8 PPG CLASS G CEMENT AT 4 BPM,300-200 PSI. DROP TOP PLUG. WASH DOWN SURFACE LINES ON BAKER CEMENTING HEAD. SWITCH TO RIG PUMPS &DISPLACE CEMENT WITH 128 BBLS 8.6 PPG MUD. CEMENT LIFT PRESSURE THROUGHOUT DISPLACEMENT FROM 106 PSI TO 1097 PSI. BEGIN DISPLACEMENT AT 6 BPM. STAGE RATE DOWN TO 3 BPM AT 100 BBLS AND 2 BPM AT 118 BBLS AWAY. 18 BBLS LOST TO FORMATION DURING JOB. LATCH LINER PLUG AND BUMP PLUG ON SCHEDULE WITH 1097 PSI. PRESSURE UP TO 3500 PSI WITH RIG PUMPS TO SET LINER HANGER. BLEED OFF PRESSURE. CIP AT 02:00 02:00 - 02:30 0.50 CASING P RUNPRD LINE UP SLB PUMP TRUCK. PUMP 1.7 BBLS TO PRESSURE UP 4300 PSI TO RELEASE HRD-E RUNNING TOOL. SLACKOFF AND BLEED OFF PRESSURE(1.7 BBLS BACK). CHECK FLOATS. NO FLOW. PICKUP AND SLACKOFF PER BAKER REP DIRECTION TO SET LINER TOP PACKER. ZXPN PIN SHEAR OBSERVED WHILE SLACKING OFF TO 85 KLBS. PICKUP OUT OF ZXPN LINER TOP PACKER AND ROTATE DOWN TO CONFIRM SET. 02:30 - 03:00 0.50 CASING P RUNPRD PICKUP 42'TO 2'ABOVE LINER TOP PACKER WITH RUNNING ASSEMBLY. CIRCULATE ONE BOTTOMS UP AT 500 GPM,1750-2100 PSI TO CLEANOUT WELLBORE OF EXCESS CEMENT. 5 BBLS CEMENT RETURNED TO SURFACE. 03:00 - 04:30 I 1.50 CASING P RUNPRD DISPLACE WELL FROM 8.6 PPG FLO-PRO TO 80 DEG 8.5 PPG SEAWATER AT 500 GPM, 2250 PSI. 04:30 - 12:30 8.00 CASING P RUNPRD LAYDOWN 4"DRILLPIPE FROM 10350'MD TO BAKER"HRD-E"RUNNING TOOL. AVERAGE 55 JOINTS PER HOUR. MOINTOR WELL PRIOR TO PULLING RUNNING TOOL THROUGH BOP STACK. NO FLOW. 12:30 - 13:00 0.50 CASING P RUNPRD LAYDOWN BAKER LINER RUNNING TOOLS. I J NOTE: 4-1/2"LINER CEMENT HAS 1000 PSI COMPRESSIVE STRENGTH AT 13:00. 13:00 - 14:00 1.00 WHSUR fi P RUNPRD PULL WEAR BUSHING. FLUSH BOP STACK AND FUNCTION RAMS TO ENSURE CLEAR OF DEBRIS. 14:00 - 15:00 1.00 CASING P RUNPRD PRESSURE TEST 7"CASING 4-1/2"LINER TOP PACKER AND 4-1/2"LINER TO 250 PSI LOW FOR FIVE MIN AND 3500 PSI HIGH_FOR 30 MIN. SEE ATTACHED CHART. AUTHORIZATION TO PROCEED RECEIVED FROM WELLS TEAM LEADER. Printed 9/26/2011 11:36:53AM North America -ALASKA- BP Page 3 of 4 Operation Summary Report Common Well Name: R-12 AFE No Event Type: COM-ONSHORE(CON) Start Date: 9/12/2011 End Date: 9/15/2011 X3-00YT9-C(1,283,640.00) Project: Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor: NABORS ALASKA DRILLING INC. UWI: Active Datum: R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 15:00 - 17:00 2.00 RUNCOM P RUNCMP TRIG UP TO RUN 4-1/2'COMPLETION TUBING. !CAMERON REP ONSITE TO MAKE DUMMY RUN WITH TUBING HANGER. 17:00 - 00:00 7.00 RUNCOM P RUNCMP HOLD PJSM. RUN 4-1/2 12.6#,13CR-85, VAMTOP COMPLETION TUBING FROM SURFACE TO 6971'MD AT MIDNIGHT (PROPOSED SETTING DEPTH= 10254'MD). TORQUE TURN CONNECTIONS TO 4,400 FT-LBS. CONDUCT KICK WHILE TRIPPING DRILL AND AAR. LITTLE RED SERVICES PUMP 55 BBLS DIESEL FREEZE PROTECT IN 9-5/8"X 7"OA AT 85 GPM,1400 PSI. INITIAL SHUT-IN PRESSURE=700 PSI. FINAL SHUT-IN PRESSURE=725 PSI(STABILIZED). 9/14/2011 00:00 - 02:30 2.50 RUNCOM P RUNCMP RUN 4-1/2", 12.6#,13CR-85,VAMTOP COMPLETION TUBING FROM 6497'AT MIDNIGHT TO 10194'MD. PU WEIGHT=138 KLBS, DOWN= 100 KLBS. 02:30 - 03:30 1.00 RUNCOM P RUNCMP CONTINUE IN HOLE WITH TUBING AND TAG , LINER TOP AT 10249'MD. RIH TO NO-GO INSIDE PBR AT 10260'MD. SPACE OUT TO • LAND TUBING WITH WIRELINE ENTRY GUIDE IN MIDDLE OF PBR AT 10254'MD. RUN IN 11 LOCKDOWN SCREWS ON CAMERON 11"X 14-1/2"TYPE H TUBING HANGER. 7"X 4-1/2"HES TNT PKR TOP SET @ 10131' MD. CENTER OF ELEMENT @ 10133'MD, 8219'TVD -FINAL DEPTHS OF GLMS: KBG2-SC GLM#1 AT 10025'MD,8119'TVD- 1"DMY GLV W/BK LATCH KBG2-SC GLM#2 AT 9576'MD,7701'TVD- 1"DMY GLV W/BK LATCH KBG2-SC GLM#3 AT 8338'MD,6590'TVD- 1"DMY GLV W/BK LATCH KBG2-SC GLM#4 AT 5982'MD,5214'TVD- 1"DMY GLV W/BK LATCH KBG2-SC GLM#5 AT 3421'MD,3386'TVD- 1"DCR SHEAR VLV W/BEK LATCH 03:30 - 04:30 1.00 RUNCOM P RUNCMP RIG DOWN TUBING RUNNING EQUIPMENT. 04:30 - 07:00 1 2.50 RUNCOM P RUNCMP PUMP 158 BBLS 120 DEG SEAWATER DOWN IA. FOLLOW WITH 125 BBLS CORROSION INHIBITED SEAWATER. DISPLACE WITH63 BBLS SEAWATER TO PLACE INHIBITED FLUID BETWEEN GLM#5 AND PRODUCTION PACKER. CIRCULATE AT 165 GPM,300 PSI. 0700 - 11:00 4.00 RUNCOM P RUNCMP MAKEUP LANDING JOINT TO TC-II TBG HANGER. DROP 1-7/8"BALL AND ROD TO RHC-M PLUG IN XN NIPPLE AT 10242'MD. CLOSE BLIND RAMS. PRESSURE UP ON TBG TO SET PKR AND TEST TBG TO 250 PSI LOW FOR 5 MIN AND 3500 PSI HIGH FOR 30 MIN. BLEED PRESSURE ON TUBING TO 1500 PSI. PRESSURE TEST IA TO 250 PSI LOW FOR 5 MIN AND 3500 PSI HIGH FOR 30 MIN. SEE ATTACHED TEST CHARTS. AUTHORIZATION TO PROCEED RECEIVED FROM WELLS TEAM LEADER. Printed 9/26/2011 11:36:53AM North America -ALASKA- BP Page 4 of 4 Operation Summary Report Common Well Name'R-12 AFE No Event Type: COM-ONSHORE(CON) Start Date: 9/12/2011 End Date:9/15/2011 X3-00YT9-C(1,283,640.00) Project: Prudhoe Bay Site: PB R Pad Rig Name/No.: NABORS 7ES Spud Date/Time: Rig Release: Rig Contractor:NABORS ALASKA DRILLING INC. UWI: Active Datum:R-12 @55.29ft(above Mean Sea Level) Date From-To Hrs Task Code , NPT 1 NPT Depth Phase Description of Operations (hr) I (ft) 11:00 - 11:30 0.50 RUNCOM P ; i RUNCMP PRESSURE UP ON IA TO 2550 PSI. SHEAR I DCR VALVE IN GLM#5 AT 3421'MD. CIRCULATE 2 BBLS EACH WAY THROUGH VALVE;2 BPM,700 PSI. 11:30 - 12:00 0.50 BOPSUR P RUNCMP 4 DRY ROD IN CAMERON TYPE H 4-1/2"TWC. !PRESSURE TEST FROM ABOVE TO 250 PSI I 1 LOW AND 3500 PSI HIGH FOR 10 MIN EACH. ! PRESSURE TEST FROM BELOW TO 250 PSI LOW AND 2000 PSI HIGH FOR 10 MIN EACH. 12:00 - 15:00 ' 3.00 BOPSUR P ' RUNCMP NIPPLE DOWN BOP. 15:00 - 17:00 2.00 WHSUR P RUNCMP NIPPLE UP NEW CAMERON 11"X 4-1/16"API 5K TUBING HEAD ADAPTER FLANGE AND D _ _ CAMERON 4-1/8"5K TREE. 17:00 - 19:00 2.00 WHSUR ' P 1 ' RUNCMP PRESSURE TEST TUBING HANGER VOID TO 250 PSI LOW AND 5000 PSI HIGH FOR 5 MIN. PRESSURE TEST NEW TREE WITH DIESEL TO 250 PSI LOW AND 5000 PSI HIGH FOR 5 MIN EACH. SEE ATTACHED CHARTS. 19:00 - 21:00 2.00 WHSUR P RUNCMP RU VALVE SHOP LUBRICATOR AND PRESSURE TEST TO 250 PSI LOW AND 3500 PSI HIGH FOR 5 MIN EACH. PULL TWC. RIG DOWN LUBRICATOR. 21:00 - 23:00 2.00 ( RUNCOM P RUNCMP MIRU LITTLE RED SERVICES PUMP TRUCK. I PRESSURE TEST LINES TO 3500 PSI. CLEAN RIG PITS. 23:00 - 00:00 1.00 RUNCOM P RUNCMP I LITTLE RED SERVICES PUMP 74 BBLS 80 DEG I I DIESEL AT 1.5-2 BPM,525-1300 PSI TO I FREEZE PROTECT TUBING AND IA TO 2200' , MD. 9/15/2011 00:00 01:00 1.00 RUNCOM P RUNCMP ALLOW DIESEL TO U-TUBE BETWEEN I TUBING AND IA. VALVE SHOP CREW INSTALL VR PLUG IN OA OUTLET AND i PRESSURE TEST TO 3000 PSI. NOTE: FINAL OA PRESSURE READING PRIOR , ITO SETTING VR PLUG=500 PSI DUE TO I I DIESEL FREEZE PROTECT UNDERBALANCE TO FORMATION AT 9-5/8"WINDOW. 01:00 - 03:00 2.00 WHSUR P RUNCMP RIG UP VALVE SHOP LUBRICATOR AND PRESSURE TEST TO 250 PSI LOW AND 3500 PSI HIGH. SET 4-1/2"CAMERON TYPE H BPV. 03:00 - 04:00 1.00 I WHSUR P RUNCMP LITTLE RED SERVICES PUMP 3.1 BBLS DOWN IA TO PRESSURE TEST BPV TO 250 PSI LOW ' AND 2000 PSI HIGH FOR FIVE MIN EACH. SEE !ATTACHED CHART. BLEED PRESSURE OFF, 3.1 BBLS RETURN. 04:00 - 05:00 ! 1.00 WHSUR P RUNCMP RIG DOWN LITTLE RED SERVICES AND VALVE SHOP LUBRICATOR. PULL PIT MODULE AWAY FROM SUBSTRUCTURE. 05:00 - 06:00 1.00 WHSUR P RUNCMP SECURE TREE AND CLEAN CELLAR. ALL VALVES ON TREE LEFT CLOSED. PRESSURE GAUGES INSTALLED ON SWAB CAP AND IA. F , WELLWORK TRANSFER PERMIT CLOSED OUT WITH PAD OPERATOR. RELEASE NABORS 7ES DRILLING RIG AT 06:00 ON 9-15-11. MOVE TO R-14. F Printed 9/26/2011 11:36:52AM R-12A, Well History (Post Rig Sidetrack) Date Summary 09/25/11 WELL S/I ON ARRIVAL. PULL B&R FROM 4-1/2" RHC-M @ 10,233' SLM PULL ST#4 BK-DGLV @ 5964' SLM/5982' MD. PULL ST#5 BEK-DCK @ 3394' SLM/3421' MD, SET ST#5 BK-LGLV @ 3421' MD. 09/26/11 SET BK-OGLV IN STA#4 @ 5964' SLM/5982' MD. PULL 4-1/2" RHC-M PLUG BODY FROM XN NIP @ 10,219' SLM/ 10,242' MD(+23'CORRECTION TO MD). NOTE: USING CORRECTION FROM RHC- M @ XN-NIP. RAN 3-3/8" DUMMY PERF. GUN &2.50" S.BAILER,TAG TD @ 11,291' SLM/11,314' MD, NO OBSTRUCTIONS. OBTAINED SAMPLE OF DRILLING MUD. WELL LEFT S/I ON DEPARTURE, PAD OP NOTIFIED. 09/28/11 WELL SHUT-IN ON ARRIVAL. INITIAL T/I/O 50/120/240 RAN IN HOLE AT 60 FPM WITH GR&CCL, TAGGED TD AT 11360'. LOGGED OUT OF HOLE FROM TD TO SURFACE AT 60 FPM. RIGGED DOWN, WILL RUN SCMT TOMORROW. FINAL T/I/O 0/120/240 09/29/11 WELL SI ON ARRIVAL. INITIAL T/I/O 0/0/240 PERFORMED 2 PASSES WITH SLIM CEMENT_ MAPING TOOL FROM TD TO 10250'. TOP OF CEMENT BEHIND TUBING TAIL.TUBING TAIL AT 10262 ELMD. WELL LEFT SI. FINAL T/I/O 0/50/240 DSO INFORMED OF WELL STATUS. JOB COMPLETE. 10/06/11 WELL SHUT IN ON ARRIVAL. INITIAL T/I/O=0/0/200 PSI. SET DOWN AT 6620'WITH 20'X 3-3/8" GUN. POOH AND SWAP OUT TO 10' GUN. SHOT INTERVAL= 11293'- 11303wiTT13-3/8_" D.34G6 PJ HMX, 6 SPF, 60 DEG PHASE. FINAL T/I/O=0/0/200 PSI. 10/07/11 WELL SHUT IN ON ARRIVAL. INITIAL T/I/O=0/0/200 PSI. UNABLE TO FALL PAST 11292'WITH 5'X 3/38" HSD GUN. INSPECTION OF 3-3/8" GUN FOUND A SMALL AMOUNT OF MUD ON THE BOTTOM OF THE GUN. SHOT INTERVAL= 11291'-11293'WITH 2' LOADED IN 5'X 2-7/8" HSD 2906 PJO HMX, 6 SPF, 60 DEG PHASE. 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Regards, Guy Schwartz Senior Petroleum Engineer AOGCC 793-1226 (office) 444-3433 (cell) From: Kosaka,Takahiro [mailto:Takahiro.Kosaka@bp.com] Sent: Monday, July 18, 2011 2:49 PM To: Schwartz, Guy L(DOA) Subject: RE: R-12 RST(PTD #211-055) Guy, BOP will be a four ram configuration for drilling although it has been a three ram during the work over operations. Spacer spool has been added to allow all four rams to be tested as per original plan. Thanks, Takahiro From: Schwartz, Guy L(DOA) [mailto:guy.schwartz@alaska.gov] Sent: Friday, July 15, 2011 9:00 AM To: Kosaka,Takahiro Subject: RE: R-12 RST(PTD #211-055) As long as there are no operational changes due to changing the BOP stack configuration. I believe 7ES has a three ram configuration . (Annular, and two pipe rams.) as opposed to Doyon 25 with a 4 ram stack. If there are any changes due to that configuration they would have to be submitted in writing. Regards, Guy Schwartz Senior Petroleum Engineer AOGCC 793-1226 (office) 444-3433 (cell) From: Kosaka,Takahiro [mailto:Takahiro.Kosaka@bp.com] Sent: Thursday, July 14, 2011 4:13 PM To: Schwartz, Guy L (DOA) Subject: R-12 RST(PTD #211-055) 7/18/2011 Page 2 of 2 I. Guy, R-12A RST is now scheduled to be drilled by Nabors 7ES (not Doyon 25 as was the case when the PTD#211- 055 was issued)with a current spud date of-7/27/11. Please advise if additional information is required. Thank you, Takahiro Kosaka Drilling Engineer BP Exploration (Alaska) takahiro.kosaka@bp.com +1 (907)564-5994 +1 (907) 575-8588 mobile 7/18/2011 siraff [E EF A [LAs - A SEAN PARNELL, GOVERNOR ALASKA OIL AND GAS 333 W.7th AVENUE,SUITE 100 CONSERVATION COM1IIISSION ANCHORAGE,ALASKA 99501-3539 PHONE (907)279-1433 FAX (907)276-7542 John Egbejimba Engineering Team Leader BP Exploration (Alaska), Inc. P.O. Box 196612 Anchorage, AK 99519-6612 Re: Prudhoe Bay Field, Prudhoe Bay Oil Pool, PBU R-12A BP Exploration (Alaska), Inc. Permit No: 211-055 Surface Location: 1228' FSL, 1801' FWL, SEC. 32, T12N, R13E, UM Bottomhole Location: 3754' FNL, 3335' FWL, SEC. 05, T11N, R13E, UM Dear Mr. Egbejimba: Enclosed is the approved application for permit to re-drill the above referenced development well. This permit to drill does not exempt you from obtaining additional permits or an approval required by law from other governmental agencies and does not authorize conducting drilling operations until all other required permits and approvals have been issued. In addition, the Commission reserves the right to withdraw the permit in the event it was erroneously issued. Operations must be conducted in accordance with AS 31.05 and Title 20, Chapter 25 of the Alaska Administrative Code unless the Commission specifically authorizes a variance. Failure to comply with an applicable provision of AS 31.05, Title 20, Chapter 25 of the Alaska Administrative Code, or a Commission order, or the terms and conditions of this permit may result in the revocation or suspension of the permit. 4 tr -ry 001 NW far K. Nor Corn -•: oner DATED this 10day of April, 2011. cc: Department of Fish 86 Game, Habitat Section w/o encl. (via e-mail) Department of Environmental Conservation w/o encl. (via e-mail) STATE OF ALASKA RECEIVE E o` ALA;" OIL AND GAS CONSERVATION COMM 'ONapp ,� S 01,,1 �/� PERMIT TO DRILL 20 AAC 25.005 Natio�y &t$6 CGR8.��f lrm&310Q 1 a.Type of work: 1 b.Proposed Well Class: ®Development Oil 0 Service-Winj 0 Single Zone l if we is propos or: ❑ Drill ®Redrill 0 Stratigraphic Test 0 Development Gas 0 Service-Supply 0 Multiple Zone 0 Coalbed Gall©nilaydrates ❑ Re-Entry 0 Exploratory 0 Service-WAG 0 Service-Disp 0 Shale Gas 2. Operator Name: 5.Bond: ® Blanket 0 Single Well 11. Well Name and Number: BP Exploration(Alaska)Inc. Bond No. 6194193 PBU R-12A 3. Address: 6. Proposed Depth: 12.Field/Pool(s): P.O. Box 196612,Anchorage,Alaska 99519-6612 MD 11287' ND 9031' Prudhoe Bay Field/Prudhoe 4a. Location of Well(Governmental Section): 7. Property Designation(Lease Number): Bay Oil Pool Surface: ADL 028279&028282 1228'FSL, 1801'FWL, SEC.32,T12N,R13E,UM Top of Productive Horizon: 8. Land Use Permit: 13. Approximate Spud Date: 3262'FNL,2740'FWL, SEC.05,T11N, R13E, UM June 15,2011 Total Depth: 9.Acres in Property: 14.Distance to Nearest Property: 3754'FNL,3335'FWL, SEC.05,T11N, R13E, UM 2560 19,596' 4b. Location of Well(State Base Plane Coordinates-NAD 27): 10.KB Elevation above MSL: —55.29' feet 15.Distance to Nearest Well Open Surface: x- 635440 y-5977712 Zone- ASP4 GL Elevation above MSL: 21.94' feet to Same Pool: 525' 16.Deviated Wells: Kickoff Depth: 6500' feet 17.Maximum Anticipated Pressures in psig(see 20 AAC 25.035) Maximum Hole Angle: 60 degrees Downhole: 3432 ' Surface: 2759 ' 18. Casing Program: Specifications Top-Setting Depth-Bottom Quantity of Cement,c.f.or sacks _ Hole Casing Weight Grade Coupling. Length MD ND MD _ ND (including stage data) 8-1/2" 7" 26# L-80 VT HC, 10337' Surface,Surface 10337' 8501' 270 cu ft Class'G' • 6-1/8" 4-1/2" 12.6# , 13Cr85 VT , 1100' 10187' 8371' 11287' 9031' .168 cu ft Class'G' - 19. PRESENT WELL CONDITION SUMMARY(To be completed for Redrill and Re-entry Operations) Total Depth MD(ft): Total Depth ND(ft): Plugs(measured): Effective Depth MD(ft): Effective Depth ND(ft): Junk(measured): 11145' 9231' 10320' 11092' 9183' 10875' Casing Length Size Cement Volume MD ND Conductor/Structural 110' 20"x 30" 8 cu vds Concrete 110' 110' Surface 2694' 13-3/8" 3767 cu ft Permafrost II 2694' 2693' Intermediate 10287' 9-5/8" 1380 cu ft'G'.575 cu ft'G'. 130 cu ft PF'C' 10287' 8461' Production Liner 1104' 7" 390 cu ft Class'G' 10031'-11135' 8239'-9222' Perforation Depth MD(ft): Below IBP: 10615'-10932' Perforation Depth ND(ft): 8751'-9037' 20.Attachments: 0 Property Plat 0 BOP Sketch ®Drilling Program 0 Time vs Depth Plot 0 Shallow Hazard Analysis 0 Diverter Sketch 0 Seabed Report ®Drilling Fluid Program ®20 AAC 25.050 Requirements 21. Verbal Approval: Commission Representative: Date: 22. I hereby certify that the foregoing is true and correct. Contact Takahiro Kosaka,564-5994 Printed Name John Egbejimba Title Engineering Team Leader / Prepared By Name/Number Signature V - - ' - Phone 564-5859 Date iliif/ Terrie Hubble,564-4628 1 Commission Use Only JJJ Permit To Drill A•IT'um. Permit r I a See cover letter for Number: �//OSS 50-029-20921-01-00 � 11 l other requirements Conditions of Approval: If box is checked,well may not be used to explore for,test,or produce coalbed methane,gas hydrates,or gas contained shales: lY1 Other: 35-a° 1.45L56 a)? 7G3 1'- ..Saamples Req'd: es No Mud Log Req'd: 0 Yes g(No 2 5c r s� /'n n,....../..4.4. ` j (-- �1 S Measures: Yes 0 No 9'rectional Survey Req'd: Yes 0 No aie -OVED BY THE COMMISSION Date -2-0 // ,COMMISSIONER Form 10-401 Revised 07/2009 This permit is valid for 24 mo from the date .firo al AAC 25.005(g)) Submit In Duplicate (TR I 7A'Zow wpo, by 0 To: Alaska Oil & Gas Conservation Commission From: Takahiro Kosaka, Operations Drilling Engineer Date: April 12, 2011 Re: Prudhoe Bay - Request for Permit to Drill R-12A A permit to drill is requested for a side track well to be named R-12A. The primary target for the production well will be Ivishak zone 3. The well will provide a cemented and perforated 4-1/2" liner and 7" long string run to surface. Expected spud date is June 15, 2011. Summary of the process: R-12 will be P&A and tubing jet cut pre-rig. Following de-completion of tubing, the existing 9-5/8" casing will be cut above DV packer and removed. New 9-5/8" casing with casing patch will be run and cemented to surface. 9-5/8" Slip Lock well head will be installed. R-12A will be kicked off from WS1. An 8-1/2" hole will be drilled to the TSGR. A 7" casing will be run to surface and cemented 1500' from the shoe. A 6-1/8" hole will then be drilled to TD to confirm potential oil lens at 21TS/TZ2A. A 4-1/2" liner will be run and fully cemented. Production tubing will be 4-1/2" 13Cr-85 tubing with a production packer. Perforations will be shot post rig. Please note the following Well Summary as detailed on the next few pages. Sincerely, Takahiro Kosaka Operations Drilling Eng eer BP Exploration (Alaska), Inc. Contact Drilling Engineer Takahiro Kosaka (907) 564-5994 Production Engineer Megan Kimmet (907) 564-5851 Geologist Mike McTeague (907) 564-4640 Page 1 Planned Well Summary Well R-12A Type Producer Target Ivishak Z2&3 Objective Estimated Start: 15th June 2011 Time to Complete: 24 Days Surface _ Northing Easting_ Offsets TRS Location 5977712 635440 1228' FSL/ 1801' FWL 12N 13E 32 Target Northing Easting Offsets TRS Location 5973240 636475 2017' FSL/2539' FEL 11N 13E 5 Bottom Northing Easting Offsets TRS Location 5972759 637080 1525' FSL/1944' FEL 11N 13E 5 API NUMBER: 50-029-20921-01 Rig: Doyon 25 MD: 11287' TVD: 9031' RT/GL: 39.50'/21.94' RTE: 61.44' Directional KOP: 6500' MD Maximum Hole Angle: 60° Close Approach Wells: All wells pass major risk Survey Program: MWD Standard + IFR + Multi Station ,/ Nearest Property Line: 19596' Nearest Well within Pool: 525' to N-06 Formation Marker Estimated Depth Hydrocarbon Estimated Formation Pore Formationp Uncertainty Bearing To(TVDss) (+/ TVD ft) (Yes/No) (EMW Pressure WS1 (in parent) 5,394 20' No 8.50 KOP(6,500'MD) 5,500 20' 9.00 CM3 5,664 100' No 8.35 CM2 6,400 100' No 9.70 CM1 6,541 100' No 9.70 THRZ 6,735 50' No 9.80 LCU 6,930 50' No 9.80 TKNG 7,195 50' No 9.60 TJF 7,506 50' No 9.60 TJE 7 686 50' No 9.60 Page 2 TJD 7 869 50' No 9.60 TJC 8,156 50' No 9.60 TJB 8 275 30' No 9.60 TJA 8 351 30' No 9.60 TSGR-Casing Point 8,440 30' Yes 7.20 TSHU 8 480 30' No 7.20 TSAD 8 561 30' Yes 7.20 42SB 8,650 30' Yes 7.20 TCGL 8 720 30' Yes 7.20 PGOC 8,730 30' 7.20 POWC 8 782 30' 7.20 BCGL 8 792 30' Yes 7.20 23SB 8 837 30' Yes 7.20 22TS 8 896 30' Yes 7.20 21 TS 8 947 30' Yes 7.20 TD 8,970 7.20 Casing/Tubing Program Hole OD ppf Grade Conn Burst Collapse Length Top Bottom Size (psi) (psi) MD/TVD MD/TVD 8-%" 7" 26.0 L-80 VT HC 7,240 5,410 10337 Surface 10337'/8501' r. 61/8" 4 '/2" 12.6 13Cr-85 VT 8,430 7,500 1100 10187'/8371' 11287'/9031' Tubing 4 '/2" 12.6 13Cr-85 VT 8,430 7,500 10187 Surface 10187 '/8371' / Mud Program Window milling fluid: LSND Density (ppg) PV YP API FL HTHP FL MBT PH 9.2 5-15 32-35 <10 <20 8.5-10.0 8-1/2" Intermediate section fluid: LSND Interval Density (ppg) PV YP API FL HTHP FL MBT PH 6500-8200' (200' 9.2-9.9 5-20 18-25 < 9 <20 8.5 - 10 above HRZ) 8200-10337 10.2-10.6 5-22 18-25 < 5 < 9 <20 8.5- 10 6-1/8" Production section fluid: Solid Free Drill-in Fluid Interval D�w� PV YP LSVR API Fl pH _ MBT Production Zone ( 8.66--9.0 4 -9 20-25 13000-21000 <15 8.5-10 <4 Completion fluid: 8.5 ppg Sea Water and Diesel Logging Program 8-1/2" Intermediate: Mud Logging Drilling: Dir/GR/Res/PWD / Open Hole: None Cased Hole: None Page 3 6-1/8" Production: Sample Catchers—as required by Wellsite Geologist Drilling: Dir/GR/Res/Neu/Dens Open Hole: None Cased Hole: None Cement Program Casing: 7" 26# L-80 VAM TOP HC Intermediate Casing Lead: None Basis: Tail: 1500' of open hole + 40% excess + 80' shoe track TOC: 8837' MD Volume: bbJ Qf 15_.8 opg Class 'G'. Yield 1.16 cf/sk. Casing: 4-1/2" 12.6# 13Cr-85 VAM TOP Production Liner Lead: None Basis: Tail: Open hole +40% excess + 80' shoe track + 150' liner lap + 200' of 7" x 4" DP excess TOC: 10187' MD (Liner Top, excess will be circulated out) Volume: 31bbl of 15.8 ppq Class `G'. Yield 1.16 cf/sk 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. Page 4 Drill and Complete Procedure Summary Pre-Rig Work 1. SL Pull IBP 2 FB Fullbore P&A. Pump 59 bbl of 15.8 ppg class G cement and squeeze off all perforations. Leave TOC to 9433' 3. SL Drift and Tag cement. Pull GLV from station 3. Drift for Jet Cut. 4. FB Circulate out well. CMIT-TxIA to 3500 psi. 5. FB CMIT-OA to 2000 psi. 6. WH Drill out and replace all LDS on Tubing Spool. 7. WH PPPOT-T to 5000 psi. 8. EL Jet Cut TBG at 6600' MD. 9. V Set BPV 10 Install cellar liner in preparation for 9-5/8" cementing job with rig 11 Shut in R-34 in preparation for rig move in Rig Operations 1. MIRU a. MIRU Doyon 25 b. Pressure test OA to 2000 psi and CMIT-TxIA to 2000 psi c. Remove BPV with lubricator. Circulate out the diesel freeze protection and displace with clean seawater. d. Install TWCV with lubricator and pressure test TWCV. e. ND tree, NU and test BOPE to 250/3500 psi f. Pull TWCV with lubricator 2. De-Complete a. PU landing joint or spear and recover the tubing hanger b. Pull and LD 7" x 5-1/2" Tubing from the pre-rig jet cut. Spool the control lines and bands c. PU 9-5/8" clean-out assembly and clean-out to the top of the tubing stub d. RIH with GR/CCL/USIT to determine KOP &9-5/8" casing cut point e. PU 9-5/8" drillable squeeze packer and set—2800' at cemented 9-5/8" section above 9- 5/8" DV packer f. Test squeeze packer to 2000 psi from above and below g. RIH with Baker multi-string cutter BHA and cut 9-5/8" casing at first"cement free"joint. h. Circulate out Arctic Pack i. BOLDS. PU Casing spear BHA and unseat the hanger j. Pull and lay down 9-5/8" Casing k. RIH with 9-5/8" dress-off assembly and dress casing stub I. RIH with 9-5/8" casing patch, ECP, ES Cementer and new 9-5/8" 47# L-80 Hydril 563 casing m. Engage casing patch and pull test n. Set ECP and test casing to 2000 psi o. Open ES Cementer and cement 9-5/8" x 13-3/8"with 15.8 ppg Class G cement to surface p. WOC until 500 psi CS q. Pick up BOP, rough cut 9-5/8", set back cut casing and BOPE r. Cut 13-3/8" from outside and LD well head s. Install 9-5/8" Slip Lock casing head and a casing spool, NU and test BOPE 3. Run 9-5/8" Whipstock a. RIH with 9-5/8" clean-out BHA ' b. Drill out cement plug, drillable squeeze packer and clean-out to EZSV setting depth c. RIH with E-line to set 9-5/8" EZSV for 47#casing —6520' d. Pressure test EZSV to 3500 psi e. RIH with 9-5/8" Whipstock, orient and set Whipstock f. Displace the well to milling fluid g Mill a window in 9-5/8"from—6500' plus 20' of formation from mid-window h. PU into casing and perform LOT Page 5 I (r) 4. Drill 8-1/2" Intermediate Hole a. RIH with 8-1/2" drilling BHA with DIR/GR/RES/PWD b. Drill -400' and run gyro survey • c. Drill 8-1/2" intermediate interval to 7" casing point at the top of Sag River. . d. Short trip to THRZ, RIH to TD, circulate wellbore clean and POH on elevator 5. Run and Cement 7" Intermediate Casing a. Change to 7" casing ram and test to 250/3500 psi b. Run 7" 26#L-80 VAM TOP HC casing to surface • c. Cement 7" casing with 1500' of 15.8 ppg Class `G' d. Pressure test 7" casing to 3500 psi for 30 minutes. Chart and record. e. RILDS and Torque to spec per Cameron. Test 7" pack-off to 5000 psi • f. Install new tubing spool g. Once cement reached 500 psi compressive strength, freeze-protect OA(7"x9-5/8" annulus). Record formation breakdown pressure on the Morning Report. L-err 6. Drill 6-1/8" Production Section a. RIH with 6-1/8" BHA with DIR/GR/RES/DEN/NEU b. Drill out 7" shoe plus 20' of formation while swapping over to new drill-in fluid. c. Perform FIT to 10 ppg (9.7 ppg required for ECD) . d. Drill 6-1/8" production hole to below TZ2A to appraise a potential oil lens. TD with enough ' rat hole to complete the interval if it shows pay. e. CBU, trip to shoe and back to TD, circulate until clean. MAD pass where required. POH. ' 7. Run and Cement 4-1/2" Production Liner a. Run 4-1/2" 12.6# 13Cr-85 VAM TOP liner from TD to 150' liner lap inside the 7" shoe - b. Cement 4-1/2" liner to TOL with 15.8 ppg Class G cement c. Set liner top packer, POH and LD liner running tool • 8. Run 4-1/2" Completion a. Run 4-1/2" 12.6# 13Cr-85 VAM TOP completion, tying into the 4-1/2" liner top. b. Reverse circulate to spot corrosion inhibited sea water followed by sufficient diesel for -2200' of freeze protection. Allow diesel freeze protect to U-tube from IA to tubing. c. Drop ball and rod. Set 4-1/2 production packer and individually test the tubing to 3,500 psi and annulus to 3,500 psi for 30 minutes each. Record each test. 9. ND/ NU / Rig Release a. Install and test TWC b. ND BOPE, NU Tree and test to 5000 psi c. Pull TWC. Set BPV d. RDMO Post-Rig Work 1 SL Replace DCR shear valve with a dummy GLV 2 SL Pull dummy valves in injection mandrels and replace with injection valves 3 E Run Cement Evaluation Log ,/ 4 E Perforate ✓ 6 Install flow lines and well house Drilling Critical Issues I. Anti-collision A. R-34 needs to be shut in during rig move as its well house is under the shadow of the Doyon 25. B. All wells passed Major Risk analysis. No well needs to be shut in due to the close approach. II. Well Control A. Reservoir Pressure _ Interval EMW MD (ft) TVDss(ft) Ivishak Z3-Z2 7.20 10787-11287 8720-8970 Page 6 B. Intermediate Casing Point 7" casing will be set at the competent shale at TSAG. If landing shallow and leaving Kingak open, sloughing shale might make running 7" casing to bottom difficult or lose the well bore. If landing deeper and penetrating permeable Sag River, there is high potential of lost circulation and possible well control issue. Well site Geologist will follow"TSAG Casing Pick Plan" using previous Isopachs, real time GR, drilling break and Glauconite cuttings, etc. to determine the casing point. Casing point target in the SOR is the hard line. It is designed to maintain maximum distance from the two adjacent faults that could make prediction of casing point difficult. Maintain drilling parameters constant while drilling into TSAG in order to detect the drilling break on penetration to the zone. III. Lost Circulation A. Lost circulation due to faults and/or fractures is possible. North and South polygon lines are bound by faults and are hard lines. Lost Circulation decision tree in included in the mud program within this well plan. For any losses >20 bbl/hr, notification of the WTL will be required as will his approval for all path-forward operations. At all times on this well from the top of the Kingak until the completion packer is set, there should be a minimum of 290 bbl excess fluid volume available for lost circulation response. B. Faults Formation Where Encounter Fault MD Intersect TVDss Est.Throw Throw Direction Uncertainty Intersect • Fault#1 -CM3 6910' 5760' 40' DTNW Med Fault#2-CM3 7520' 6130' <20' DTNW High Fault#3-Zn4 10665' 8665' <20' DTN High IV. Breathing A. K-Pad is in the med risk zone for LC according to the WURD lost circulation study and the seismic data indicates that we may have one fault crossing in Z1A in the lateral part of the sidetrack(estimated throw of 40ft). V. Kick Tolerance/Integrity Testing A. Well control equipment 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. BOP regular test frequency will be 14 days during drilling phase and 7 days during de-completion and surface casing work. BOPE and drilling fluid system schematics are on file with the AOGCC. B. Planned BOP Test Pressure Rams 250/3500 psi Annular 250/3500 psi C. Planned Casing Pressure Casing Casing Test Pressure 7" Intermediate Casing 3500 psi 4-1/2" Production Liner 3500 psi D. Integrity Testing Interval Max BHP Max Surface Kick tolerance LOT/FIT Pressure 8-1/2" 3432 psi (9.8 ppg 2759 psi 115 bbl with 10.6 ppg LOT. 11.2 ppg Intermediate EMW) @6735' mud and 12.79 ppg FG required for ECD Page 7 TVDss 6-1/8" 3294 psi (7.2 ppg 2439 psi Infinite with 8.6 ppg FIT. 9.7 ppg Production EMW) @8800' mud and 11.58 ppg FG required for ECD TVDss Max Surface Pressure based on full column on gas 0.10 psi/ft VI. Hydrogen Sulfide R-pad is designated as an H2S site. Recent H2S data from the pad is as follows: Well Name H2S Level Reading Date Parent Well(if sidetrack) R-12 120 ppm 11/7/2009 #1 Closest SHL Well H2S Level R-34 N/A-injector - #2 Closest SHL Well H2S Level R-25 N/A-injector - #1 Closest BHL Well H2S Level J-26 14 ppm 8/12/2010 #2 Closest BHL Well H2S Level N-06 55 ppm 12/7/2008 Max. Recorded H2S on Pad/Facility R-19 2200*ppm 8/21/1996 R-Pad is considered a H2S pad *R-19's 2200 ppm reading seems abnormally Other Relevant H2S Data high. No other samples on this well or pad have (H2S alarms from rigs,etc.) been above 600 ppm. R-19 has been sidetracked to R-19A and the most recent sample showed 18 ppm. Attachments: Current Well Schematic Pre-Rig Well Schematic Proposed Well Schematic Directional Plan Doyon 25 BOP Schematic Page 8 TREE= 6"MCEVOY Si r NOTES:'**TROUBLE PULL/SETTING GLM WELLHEAD= MCEVOY #8 t. .ASTIC DEBRIS)*** ACTUATOR= OTISR-1 2 KB.ELEV= 55.3" BF.ELEV- 21.94' KOP= 2900' Max Angle= 50 @ 6242" 2598' I—9-5/8"DV PKR Datum MD= 10,718' Datum TVD= 8800'SS 2ggg' —7"X 5-1/2"XO,ID=4.892" 13-3/8"CSG,72#,L-80, ID=12.347" H 2695' \ /j 3002' H 5-1/2"CAMCO BAL-O SSSVN, ID=4.562" 7"TBG,26#, L-80 IJ4S,.0383 bpf, ID=6.276" — 2989' GAS LIFT MANDRELS ST MD TVD DEV TYPE VLV LTCH PORT DATE 10 3120 3108 19 LBD DOME RM 16 05/28/08 Minimum ID = 3.725" @ 10076' *9 5301 4767 48 LBD 'DOME 16 11/04/07 4-1/2" OTIS XN NIPPLE I 8 6985 5878 46 LBD DMY RA 0 10/06/92 LI 7 8129 6703 41 LBD S/O RM 24 05/28/08 6 8616 7082 37 LBD DMY RA 0 03/18/83 5 8771 7206 37 LBD DMY RA 0 09/16/97 4 9137 7502 35 LBD DMY RA 0 03/18/83 3 9288 7626 35 LBD DMY RM 28 11/04/07 2 9683 7954 32 LBD DMY RA 0 04/08/97 1 9831 8080 32 LBD DMY RA 0 04/08/97 *VALVE BROKEN BELOW VALVE THREADS- LATCH ONLY RECOVERED 9901' 1-15-1/2"BKR L SLD SLV, ID=4.313" IIII 5-1/2"TBG, 17#,L-80,.0232 bpf, ID=4.892" H 9955' J , 9960' --I BOT SBR ��` 9984' H 9-5/8"x 5-1/2"BOT PKR,ID=4.750" ` TOP OF 7"LNR — 10031' 9996' —16.58"X 4-1/2"XO,ID=3.958" 10036' I—4-1/2"X NIP,ID=3.813" 4-1/2"TBG,12.6#,L80,.0152 bpf,ID=3.958" — 10114' 1 I 10076' I—4-1/2"OTIS XN NIP,ID=3.725" 9-5/8"CSG,47#,L-80,ID=8.681" — 10287' PERFORATION SUMMARY 10114' H4-1/2"BOT SOS(WLEG),ID=3.958" REF LOG: SWS-BHCS ON 03/14/83&CBL ON 03/17/83 —ELMD NOT LOGGED ANGLE AT TOP PERF: 27 @ 10615' ' 10320' H 3-3/8"BKR IBP(02/19/11) I Note:Refer to Production DB for historical perf data SIZE SPF INTERVAL Opn/Sqz DATE 3-3/8"r 6 10615- 10620 ' 0 05/25/97 2-7/8"r 4 10720-10770 S 05/03/90 10730' H MARKER JOINT 3-3/8"' 4 10770- 10780 0 02/11/97 I 3-3/8"' 6 10788- 10808 0 03/20/92 3-318"r 6 10790- 10830 0 02/11/97 ' 3-3/8"r 4 10830- 10860 S 05/03/90 10875' FISH-2-1/2"&4-1/2"WRP SLIPS 3-3/8"r 6 10882-10897 0 02/11/97 3-3/8"' 6 10897-10932 0 03/20/92 4"X 1-1/2"X 1"(09/12/10) A,,I 10981' -1 FISH- 10'x 1-1/2"PRONG FROM SSSV FULLING TOOL PBTD — 11092' 1/11/114 1/1111/1/1111114 7"LNR,26#,L-80,.0383 bpf, ID=6.276" H 11135' 10......1 DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 03/18/83 N26E ORIGINAL COMPLETION 09/13/10 TTW/PJC SET IBP WELL: R-12 05/31/08 DAV/TD GLV C/O(5/28/08) 12/15/10 BSE/PJC PULL IBP(12/14/10) PERMIT No: 1830350 05/31/08 JCM/PJC PULL IBP,XXP&FISH(05/28-30/C302/27/11 KJB/PJC SET IBP(02/19/11) API No: 50-029-20921-00 08/30/10 GJF/PJC PULL AVA PATCH(08/27/10) Sec.32,T12N,R13E, 1228'FSL&1801'FWL 09/13/10 JCM/PJC FULL NIP RED(08/29/10) 09/12/10 CJN/PJC FISH BP Exploration(Alaska) TREE= 6"MCEVOY NELLHEAD= MCEVOY S Y NOTES:'""TROUBLE PULL/SETTING GLM 4CTUATOR= OTIS ft-1 2 Pre-Rig #8 ,. LASTIC DEBRIS)*** <a ELEV= 55.3"- 3F. ELEV= 21.94' <OP= 2900' 4tax Angle=7----50 @ 6242" TOC 2200' 3atumMD= _ _10,718' 2598' —{9-5/8"DV PKR 3atumTVD= 88007SS 2989' —17"X 5-112"XO, ID=4 892" 13-3/8"CSG,72#, L-80, ID=12.347' H 2695' / / 3002' —15-1/2"CA MCO BAL-O SSSVN,ID=4.562" 7"TBG,26#,L-80 U4S, .0383 bpf, ID=6.276" H 2989' GAS LIFT MANDRELS 0 ST MD TVD DEV TYPE VLV LTCH PORT DATE Minimum ID = 3.725" @ 10076' 10 3120 3108 19 LBD DOME RM 16 05/28/08 4-1/2" OTIS XN NIPPLE *9 5301 4767 48 LBD ",'. ' 16 11/04/07 I 8 6985 5878 46 LBD DMY RA 0 10/06/92 R-12A P finned KO P 6500' I LI 7 8129 6703 41 LBD S/O RM 24 0528/08 !11 6 8616 7082 37 LBD DMY RA 0 03/18/83 JetCut6600' 5 8771 7206 37 LBD DMY RA 0 09/16/97 4 9137 7502 35 LBD DMY RA 0 03/18/83 TOC 5300' 3 9288 7626 35 LBD Open RM 28 11/04/07 2 9683 7954 32 LBD DMY RA 0 04/08/97 1 9831 8080 32 LBD DMY RA 0 04/08/97 Hole in tubing 9433' LDL '92 E *VALVE BROKEN BELOW VA LVE THREA DS- LATCH ONLY RECOVERED I I ' 9901' H5-1/2"BKR L SLD SLV,ID=4.313" 5-1/2"TBG, 17#, L-80,.0232 bpf,ID=4.892" I-- 9955' , --I 9960' —I BOT SBR ': P ackerLeak LDL 9/1120109984' H9-5/8"x 5-112"BOT PKR, ID=4.750" TOP OF T'LNR H 10031' ` 9996' —16.58"X 4-12"XO, ID=3.958" f, , ir.-- 10036' —14-1/2"X NIP, ID=3.813" r- 4-1/2'TBG,12.6#, L80,.0152 bpf,ID=3.958" H 10114' , r-----1 10076' H4-1/7'O11S XN NIP,ID=3.725" 9-5/8"CSG,47#,L-80,ID=8.681" --I 10287' / \_` PERFORATION SUMMARY 10114' H4-1/2"BOT SOS(WLEG), ID=3.958" REF LOG: SWS-BI-CS ON 03/14/83&CBL ON 03/17/83 , rSGB ' 6' (842 HELMDNOT LOGGED ANGLEAT TOP FERF: 27 @ 10615' Note: Refer to Roduction DB for historical pert data SIZE SPF INTERVAL Opn/Sqz DATE 3-3/8" 6 10615-10620 C 0525/97 2-7/8" 4 10720-10770 S 05/03/90 3-3/8" 4 10770-10780 C 02/11/97 10730' H MARKER JOINT 3-3/8" 6 10788-10808 C 0320/92 3-3/8" 6 10790-10830 C 02/11/97 3-3/8" 4 10830-10860 S 05/03/90 3-3/8" 6 10882-10897 C 02/11/97 3-3/8" 6 10897-10932 C 0320/92 Aikr 1 ` 10875' FISH-2-12 8 4-1/2"WRP SLIPS 14"X1-1/Z'X1"(09/12/10) 10981' FISH-10'x 1-1/2"PRONG FROM SSSV PULLING TOOL PBTD H 11092' 7"LNR,26#,L-80, .0383 bpf, ID=6.276" H 11135' ►!.!.!.!.!..1.4 DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 03/18/83 N26E ORIGINAL COMPLETION 09/13/10 TTW/PJC SET IBP WELL: R-12 05/31/08 DAV/TD GLV CIO(5/28/08) 02/17/11 MSE ADD DRLG INFO PERMIT No:'1830350 05/31/08 JCM/PJC PULL IBP,XXP&FISH(05/28-30108) API No: 50-029-20921-00 08/30/10 GJF/PJC PULL A VA PATCH(08/27/10) Sec.32,T12N, R13E, 1228'FSL&1801'FWL 09/13/10 JCM/PJC PULL NIP RED(08/29/10) 09/12/10 CJN/PJC FISH BP Exploration(Alaska) TREE= 4-1/8"Cameron Wellhead- SlIPLock OTIS k-12A Purposed KB.ELEV= 55.3 1 BF.ELEV= 21.94' KOP= 2900' 93/8"47#L-80 Hyd 563 AngleE S C em enter — 2100' \ Mix Datum MD= 106242" BakerECP H 2125' .1- O 2200' H 4-12"X NIP ID =3.813" I/O= 8800'$$ BakerCasngPatrhI 2160' 2989' H 9318"Dv PKR 13-3/8"C SG 72#L-80 ID =12347"— 2695' GAS LFT MANDRELS ST MD TVD DEV TYPE VLV I LTCH PORT DATE 5 3475 3400 4 5965 5200 "-0 3 8128 6600 E stirs ated TOC H 5300' 2 9300 7600 1 9992 8200 Mhilt um ID=3.725"@10107'4-1/2"XNNppb 9-5/8"W hpstock — 6500' ‘P 9-5/8"EVSV — 6520' 8837' I--I TO C JetCut H 6600' - - TO C H 9400' 512"TBG 17#L-80 D=4.892" H 9955' ------ 93/8"x5 12"BOT PKR ID=4.750"-- 9984' li 6 Top of7"LNR 26#L30 ID=6276" 10031' _ 4 12"TBG 12.6#L-80 D=3958" H 10114' _ • 10002' -4-1/2"x N P ID 3.813" 9-5/8"C SG 97#L-80 D=8.681" — 10287' _ _-_A I_ ,= a10037' - 7"x4 12"TNT PKR PERFORATION SUMMARY 10072' -4-12^x N]P ID 3 813" REQ LOG: SWS-BHCS ON 03/14/83&CBL ON 03/17/83 I 10107' -4 12"xN NIP ID 3.725" ANGLE AT TOP PERF: 10187' - 9 12"TBG 12.6#13Cr Note:Refer to Production DB for historical pert data I 1' 10187' BKR LinerH anger/LTP SIZE SPF INTERVAL Opn/Sgz DATE i � I 3 I 7"CSG 20#r- '=6.131" 71-1 10337' 11207' - PBTD 1 - J ►y�������t 9 12"LNR 12.6#13Cr J— 11287' 1,.'.'..♦.'.,* DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 03/18/83 N26E ORIGINAL COMPLETION 09/13/10 TTW/PJC SET IBP WELL: R-12A 05/31/08 DAV/TD GLV C/O(5128/08) 02115/11 MSE PROPOSED RST PERMIT No: 05/31/08 JCM/PJC PULL IBP,XXP&FISH(05/28-30/08) API No: 50-029-20921-01 08/30/10 GJF/PJC PULL AVA PATCH(08/27/10) Sec.32,T12N,R13E,1228'FSL&1801'FWL 09/13/10 JCM/PJC PULL NIP RED(08/29/10) 09/12/10 CJN/PJC FISH BP Exploration(Alaska) Note: For R-12A RST, BOP stack will be NU on a spacer spool above the existing tubing spool and the diverter as included in this schematic does not apply. _ Tr-FF,77-[7-- • ; , IMIElliii 1 -.1.; :: .fl -:1 i ',..:1H I i II El il ! •: 11‘,1 i 17f1 11 T 1-7ET: rn1 trfl.,, tipl, lir.... 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S -..m ❑ 0 1 1 1 Im F- I- 2 0 1 1 1 UN m1 CI -, 0 -) (0 c o VD .1 N n W \ 1 ' F M N n F ❑ \ C0 o b o 'v \ 2I- N ¶) 0 r Y Ocicc OpMOz aOO\ m ❑ N NN N.-=� 0aDVM N d )p a IC > No LT,m 1 - I- II) aCCN = ° 0 L Eng Z1 _ ra ' �aa�aoCC � o U x2 2 Z 1 j hUw ❑.-m 1.twd� N. � m aN ' c wCmU Um W �Mm ❑ NO 3 1 D m C 0 WQ cum:, Z a 0"...a( o mom L C N )--1 I Q Q m m f-W a' ¢ r N J a [q / O H F< v E-6a 0 • O 1-'Q ty�tUOL J O `II O Z Z n�� 1M cu Ete Q /`` II II a Mr 1•1• R 0. o O H� Q f NWmWE >1000 N Q O41 Hmm U Q W 0 o 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 o O 0 0 0 0 0 0 O o vi- a n o M m m N (0 m Q n o (0 (0 (0 m m m m n n n m m m m MN 009)41dad leo!PaA anJl Halliburton Company HALLIBURTON Standard Proposal Report Database: .Sperry EDM .16 PRD Local Co-ordinate Reference: Well R-12 Company: BP-Alaska TVD Reference: BFE@21.94'+D25RKB@39.50'=61.44'@ 61.44f Project: Prudhoe Bay MD Reference: BFE@21.94'+D25RKB@39.50'=61.44'@ 61.44f Site: PB R Pad North Reference: True Well: R-12 Survey Calculation Method: Minimum Curvature Wellbore: Plan R-12A Design: R-12A WP19 Project Prudhoe Bay,North Slope,UNITED STATES Map System: US State Plane 1927(Exact solution) System Datum: Mean Sea Level Geo Datum: NAD 1927(NADCON CONUS) Using Well Reference Point Map Zone: Alaska Zone 04 Using geodetic scale factor Site PB R Pad,TR-12-13 Site Position: Northing: 5,975,706.22ft Latitude: 70.34 From: Map Easting: 637,446.42ft Longitude: -148.88 Position Uncertainty: 0.00 ft Slot Radius: 0" Grid Convergence: 1.05° Well R-12,R-12 Well Position +N/-S 0.00 ft Northing: 5,977,711.80 ft Latitude: 70.35 +EI-W 0.00 ft Easting: 635,440.01 ft Longitude: -148.90 Position Uncertainty 0.00 ft Wellhead Elevation: ft Ground Level: 0.00 ft Wellbore Plan R-12A Magnetics Model Name Sample Date Declination Dip Angle Field Strength C) (°) (nT) BGGM2010 4/30/2011 21.52 81.00 57,653 Design R-12A WP19 Audit Notes: Version: Phase: PLAN Tie On Depth: 6,500.00 Vertical Section: Depth From(TVD) +N/-S +E/-W Direction (ft) (ft) (ft) (°) 39.54 0.00 0.00 167.91 Plan Sections Measured Vertical TVD Dogleg Build Turn Depth Inclination Azimuth Depth System +N/-S +E/-W Rate Rate Rate Tool Face (ft) (°) (°) (ft) ft (ft) (ft) (°/100ft) (°/100ft) (°/100ft) C) 6,500.00 49.78 185.46 5,553.95 5,492.51 -2,389.07 -43.44 0.00 0.00 0.00 0.00 6,520.00 50.83 182.65 5,566.73 5,505.29 -2,404.41 -44.53 12.00 5.24 -14.03 -65.00 6,540.00 50.83 182.65 5,579.36 5,517.92 -2,419.90 -45.25 0.00 0.00 0.00 0.00 6,765.00 51.24 171.08 5,721.14 5,659.70 -2,594.05 -35.67 4.00 0.19 -5.14 -91.00 6,940.00 51.46 162.12 5,830.57 5,769.13 -2,726.76 -4.04 4.00 0.13 -5.12 -91.00 6,990.00 52.14 159.73 5,861.49 5,800.05 -2,763.89 8.80 4.00 1.35 -4.79 -71.00 7,745.00 52.14 159.73 6,324.87 6,263.43 -3,323.03 215.34 0.00 0.00 0.00 0.00 8,345.65 29.97 145.16 6,776.01 6,714.57 -3,673.71 385.71 4.00 -3.69 -2.43 -162.02 10,337.17 29.97 145.16 8,501.32 8,439.88 -4,490.07 954.05 0.00 0.00 0.00 0.00 10,337.31 29.97 145.16 8,501.44 8,440.00 -4,490.13 954.09 4.00 3.58 3.57 26.49 10,357.31 29.97 145.16 8,518.77 8,457.33 -4,498.33 959.79 0.00 0.00 0.00 0.00 10,596.01 60.03 127.88 8,686.22 8,624.78 -4,613.80 1,078.62 13.50 12.59 -7.24 -28.86 10,765.76 60.03 127.88 8,771.02 8,709.58 -4,704.09 1,194.69 0.00 0.00 0.00 0.00 10,766.61 60.02 128.01 8,771.44 8,710.00 -4,704.54 1,195.27 13.50 -1.59 15.48 96.81 11,286.87 60.02 128.01 9,031.44 8,970.00 -4,982.02 1,550.34 0.00 0.00 0.00 0.00 3/30/2011 11:18:11 PM Page 2 COMPASS 2003.16 Build 71 Halliburton Company • HALLIBURTON Standard Proposal Report Database: .Sperry EDM .16 PRD Local Co-ordinate Reference: Well R-12 Company: BP-Alaska TVD Reference: BFE@21.94'+D25RKB@39.50'=61.44'@ 61.44f Project: Prudhoe Bay MD Reference: BFE@21.94'+D25RKB@39.50'=61.44'©61.44f Site: PB R Pad North Reference: True Well: R-12 Survey Calculation Method: Minimum Curvature Wellbore: Plan R-12A Design: R-12A WP19 Planned Survey Measured Vertical Map Map Depth Inclination Azimuth Depth TVDss +N/-S +E/-W Northing Easting DLS Vert Section (ft) (0) (°) (ft) ft (ft) (ft) (ft) (ft) -5,492.51 6,500.00 49.78 185.46 5,553.95 -5,492.51 -2,389.07 -43.44 5,975,322.53 635,439.75 0.00 2,326.98 KOP/Start in 9 5/8"CSG; Dir 12°/100':6500'MD,5553.95'TVD:65°LT TF 6,520.00 50.83 182.65 5,566.73 -5,505.29 -2,404.41 -44.53 5,975,307.17 635,438.94 12.00 2,341.76 End Dir :6520'MD,5566.73'TVD 6,540.00 50.83 182.65 5,579.36 -5,517.92 -2,419.90 -45.25 5,975,291.67 635,438.50 0.00 2,356.75 Start Dir 4°/100':6540'MD,5579.36'TVD 6,600.00 50.82 179.56 5,617.27 -5,555.83 -2,466.39 -46.14 5,975,245.17 635,438.44 4.00 2,402.03 6,700.00 51.00 174.41 5,680.34 -5,618.90 -2,543.86 -42.06 5,975,167.80 635,443.93 4.00 2,478.63 6,765.00 51.24 171.08 5,721.14 -5,659.70 -2,594.05 -35.67 5,975,117.74 635,451.22 4.00 2,529.04 6,771.86 51.24 170.73 5,725.44 -5,664.00 -2,599.33 -34.82 5,975,112.47 635,452.17 4.00 2,534.38 CM3 6,800.00 51.23 169.29 5,743.06 -5,681.62 -2,620.93 -31.02 5,975,090.94 635,456.36 4.00 2,556.31 6,900.00 51.35 164.16 5,805.62 -5,744.18 -2,696.84 -13.11 5,975,015.38 635,475.64 4.00 2,634.28 6,940.00 51.46 162.12 5,830.57 -5,769.13 -2,726.76 -4.04 5,974,985.63 635,485.24 4.00 2,665.43 6,990.00 52.14 159.73 5,861.49 -5,800.05 -2,763.89 8.80 5,974,948.74 635,498.75 4.00 2,704.43 End Dir :6990'MD,5861.49'TVD 7,000.00 52.14 159.73 5,867.63 -5,806.19 -2,771.29 11.54 5,974,941.39 635,501.62 0.00 2,712.24 7,100.00 52.14 159.73 5,929.01 -5,867.57 -2,845.35 38.89 5,974,867.84 635,530.31 0.00 2,790.39 7,200.00 52.14 159.73 5,990.38 -5,928.94 -2,919.41 66.25 5,974,794.29 635,559.00 0.00 2,868.53 7,300.00 52.14 159.73 6,051.76 -5,990.32 -2,993.47 93.61 5,974,720.75 635,587.69 0.00 2,946.68 7,400.00 52.14 159.73 6,113.13 -6,051.69 -3,067.53 120.96 5,974,647.20 635,616.37 0.00 3,024.83 7,500.00 52.14 159.73 6,174.51 -6,113.07 -3,141.59 148.32 5,974,573.65 635,645.06 0.00 3,102.97 7,600.00 52.14 159.73 6,235.88 -6,174.44 -3,215.65 175.68 5,974,500.11 635,673.75 0.00 3,181.12 7,700.00 52.14 159.73 6,297.26 -6,235.82 -3,289.70 203.03 5,974,426.56 635,702.44 0.00 3,259.27 7,745.00 52.14 159.73 6,324.87 -6,263.43 -3,323.03 215.34 5,974,393.47 635,715.35 0.00 3,294.43 Start Dir 4°/100':7745'MD,6324.87'TVD 7,800.00 7,900.00 50.05 158.84 6,359.41 -6,297.97 -3,363.06 230.48 5,974,353.72 635,731.20 4.00 3,336.74 46.27 157.08 6,426.11 -6,364.67 -3,432.11 258.39 5,974,285.19 635,760.36 4.00 3,410.11 7,950.25 44.38 156.11 6,461.44 -6,400.00 -3,464.91 272.58 5,974,252.66 635,775.14 4.00 3,445.15 CM2 8,000.00 42.52 155.09 6,497.56 -6,436.12 -3,496.07 286.71 5,974,221.76 635,789.82 4.00 3,478.58 8,100.00 38.81 152.79 6,573.40 -6,511.96 -3,554.61 315.29 5,974,163.75 635,819.45 4.00 3,541.81 8,136.92 37.45 151.84 6,602.44 -6,541.00 -3,574.80 325.88 5,974,143.76 635,830.40 4.00 3,563.76 CM1 8,200.00 35.16 150.09 6,653.27 -6,591.83 -3,607.46 343.98 5,974,111.43 635,849.10 4.00 3,599.49 8,300.00 31.57 146.86 6,736.78 -6,675.34 -3,654.35 372.66 5,974,065.07 635,878.62 4.00 3,651.35 8,345.65 29.97 145.16 6,776.01 -6,714.57 -3,673.71 385.71 5,974,045.95 635,892.01 4.00 3,673.02 End Dir :8345.65'MD,6776.01'TVD 8,369.23 29.97 145.16 6,796.44 -6,735.00 -3,683.38 392.44 5,974,036.41 635,898.92 0.00 3,683.88 THRZ 8,400.00 29.97 145.16 6,823.09 -6,761.65 -3,695.99 401.22 5,974,023.96 635,907.92 0.00 3,698.05 8,500.00 29.97 145.16 6,909.73 -6,848.29 -3,736.98 429.76 5,973,983.49 635,937.19 0.00 3,744.11 8,594.32 29.97 145.16 6,991.44 -6,930.00 -3,775.65 456.68 5,973,945.32 635,964.80 0.00 3,787.55 LCU 8,600.00 29.97 145.16 6,996.36 -6,934.92 -3,777.97 458.30 5,973,943.02 635,966.46 0.00 3,790.17 3/30/2011 11:18:11 PM Page 3 COMPASS 2003.16 Build 71 Halliburton Company HALLIBURTON Standard Proposal Report Database: .Sperry EDM.16 PRD Local Co-ordinate Reference: Well R-12 Company: BP-Alaska ND Reference: BFE@21.94'+D25RKB@39.50'=61.44'@ 61.44f Project: Prudhoe Bay MD Reference: BFE@21.94'+D25RKB@39.50'=61.44'@ 61.44f Site: PB R Pad North Reference: True Well: R-12 Survey Calculation Method: Minimum Curvature Wellbore: Plan R-12A Design: R-12A WP19 Planned Survey Measured Vertical Map Map Depth Inclination Azimuth Depth TVDss +N/-S +E/-W Northing Easting DLS Vert Section (ft) (°) (°) (ft) ft (ft) (ft) (ft) (ft) -7,021.55 8,700.00 29.97 145.16 7,082.99 -7,021.55 -3,818.97 486.84 5,973,902.56 635,995.74 0.00 3,836.23 8,800.00 29.97 145.16 7,169.63 -7,108.19 -3,859.96 515.37 5,973,862.09 636,025.01 0.00 3,882.29 8,900.00 29.97 145.16 7,256.26 -7,194.82 -3,900.95 543.91 5,973,821.62 636,054.28 0.00 3,928.35 8,900.21 29.97 145.16 7,256.44 -7,195.00 -3,901.04 543.97 5,973,821.54 636,054.34 0.00 3,928.44 TKNG 9,000.00 29.97 145.16 7,342.89 -7,281.45 -3,941.94 572.45 5,973,781.16 636,083.55 0.00 3,974.41 9,100.00 29.97 145.16 7,429.52 -7,368.08 -3,982.93 600.99 5,973,740.69 636,112.82 0.00 4,020.47 9,200.00 29.97 145.16 7,516.16 -7,454.72 -4,023.93 629.52 5,973,700.23 636,142.09 0.00 4,066.53 9,259.20 29.97 145.16 7,567.44 -7,506.00 -4,048.19 646.42 5,973,676.27 636,159.42 0.00 4,093.79 TJF 9,300.00 29.97 145.16 7,602.79 -7,541.35 -4,064.92 658.06 5,973,659.76 636,171.36 0.00 4,112.59 9,400.00 29.97 145.16 7,689.42 -7,627.98 -4,105.91 686.60 5,973,619.29 636,200.64 0.00 4,158.65 9,466.97 29.97 145.16 7,747.44 -7,686.00 -4,133.36 705.71 5,973,592.19 636,220.24 0.00 4,189.49 TJE 9,500.00 29.97 145.16 7,776.06 -7,714.62 -4,146.90 715.14 5,973,578.83 636,229.91 0.00 4,204.71 9,600.00 29.97 145.16 7,862.69 -7,801.25 -4,187.89 743.68 5,973,538.36 636,259.18 0.00 4,250.77 9,678.20 29.97 145.16 7,930.44 -7,869.00 -4,219.95 765.99 5,973,506.71 636,282.07 0.00 4,286.79 TJD 9,700.00 29.97 145.16 7,949.32 -7,887.88 -4,228.88 772.21 5,973,497.89 636,288.45 0.00 4,296.83 9,800.00 29.97 145.16 8,035.96 -7,974.52 -4,269.88 800.75 5,973,457.43 636,317.72 0.00 4,342.89 9,900.00 29.97 145.16 8,122.59 -8,061.15 -4,310.87 829.29 5,973,416.96 636,346.99 0.00 4,388.95 10,000.00 29.97 145.16 8,209.22 -8,147.78 -4,351.86 857.83 5,973,376.50 636,376.27 0.00 4,435.01 10,009.49 29.97 145.16 8,217.44 -8,156.00 -4,355.75 860.53 5,973,372.66 636,379.04 0.00 4,439.38 TJC 10,100.00 29.97 145.16 8,295.85 -8,234.41 -4,392.85 886.36 5,973,336.03 636,405.54 0.00 4,481.07 10,146.85 29.97 145.16 8,336.44 -8,275.00 -4,412.06 899.73 5,973,317.07 636,419.25 0.00 4,502.64 TJB 10,200.00 29.97 145.16 8,382.49 -8,321.05 -4,433.84 914.90 5,973,295.56 636,434.81 0.00 4,527.12 10,234.57 29.97 145.16 8,412.44 -8,351.00 -4,448.02 924.77 5,973,281.57 636,444.93 0.00 4,543.05 TJA 10,300.00 29.97 145.16 8,469.12 -8,407.68 -4,474.84 943.44 5,973,255.10 636,464.08 0.00 4,573.18 10,337.17 29.97 145.16 8,501.32 -8,439.88 -4,490.07 954.05 5,973,240.06 636,474.96 0.00 4,590.31 Start Dir 4°/100': 10337.17'MD,8501.32'TVD 10,337.31 29.97 145.16 8,501.44 -8,440.00 -4,490.13 954.09 5,973,240.00 636,475.00 3.97 4,590.37 End Dir :10337.31'MD,8501.44'ND-TSGR-7"-R-12A T1 10,357.31 29.97 145.16 8,518.77 -8,457.33 -4,498.33 959.79 5,973,231.90 636,480.86 0.00 4,599.58 Start Dir 13.5°/100':10357.31'MD,8518.77'TVD 10,383.92 33.16 141.99 8,541.44 -8,480.00 -4,509.52 968.07 5,973,220.86 636,489.34 13.50 4,612.26 TSHU 10,400.00 35.12 140.33 8,554.75 -8,493.31 -4,516.55 973.74 5,973,213.94 636,495.12 13.50 4,620.32 10,489.40 46.32 133.37 8,622.44 -8,561.00 -4,558.69 1,013.80 5,973,172.53 636,535.94 13.50 4,669.92 TSAD 10,500.00 47.67 132.72 8,629.67 -8,568.23 -4,563.98 1,019.47 5,973,167.35 636,541.70 13.50 4,676.28 10,596.01 60.03 127.88 8,686.22 -8,624.78 -4,613.80 1,078.61 5,973,118.61 636,601.73 13.50 4,737.38 End Dir :10596.01'MD,8686.22'TVD 10,600.00 60.03 127.88 8,688.21 -8,626.77 -4,615.92 1,081.34 5,973,116.53 636,604.50 0.01 4,740.03 3/30/2011 11:18:11 PM Page 4 COMPASS 2003.16 Build 71 Halliburton Company HALLIBURTONJ Standard Proposal Report Database: .Sperry EDM.16 PRD Local Co-ordinate Reference: Well R-12 Company: BP-Alaska TVD Reference: BFE@21.94'+D25RKB@39.50'=61.44'@ 61.44f Project: Prudhoe Bay MD Reference: BFE@21.94'+D25RKB@39.50'=61.44'@ 61.44f Site: PB R Pad North Reference: True Well: R-12 Survey Calculation Method: Minimum Curvature Wellbore: Plan R-12A Design: R-12A WP19 Planned Survey Measured Vertical Map Map Depth Inclination Azimuth Depth TVDss +N/-S +E/-W Northing Easting DLS Vert Section (ft) (°) (°) (ft) ft (ft) (ft) (ft) (ft) -8,650.00 10,646.50 60.03 127.88 8,711.44 -8,650.00 -4,640.66 1,113.14 5,973,092.38 636,636.74 0.00 4,770.87 42SB 10,700.00 60.03 127.88 8,738.17 -8,676.73 -4,669.11 1,149.72 5,973,064.60 636,673.82 0.00 4,806.36 10,765.76 60.03 127.88 8,771.02 -8,709.58 -4,704.09 1,194.69 5,973,030.44 636,719.41 0.00 4,849.97 Start Dir 13.5°/100':10765.76'MD,8771.02'TVD 10,766.61 60.02 128.01 8,771.44 -8,710.00 -4,704.54 1,195.27 5,973,030.00 636,720.00 13.43 4,850.54 End Dir :10766.61'MD,8771.44'TVD-R-12A T2 10,786.62 60.02 128.01 8,781.44 -8,720.00 -4,715.21 1,208.93 5,973,019.58 636,733.85 0.00 4,863.83 TCGL 10,800.00 60.02 128.01 8,788.13 -8,726.69 -4,722.35 1,218.06 5,973,012.61 636,743.10 0.00 4,872.72 10,806.63 60.02 128.01 8,791.44 -8,730.00 -4,725.88 1,222.58 5,973,009.15 636,747.69 0.00 4,877.13 PGOC 10,900.00 60.02 128.01 8,838.10 -8,776.66 -4,775.68 1,286.31 5,972,960.52 636,812.30 0.00 4,939.17 10,910.68 60.02 128.01 8,843.44 -8,782.00 -4,781.38 1,293.60 5,972,954.95 636,819.69 0.00 4,946.27 POWC 10,930.69 60.02 128.01 8,853.44 -8,792.00 -4,792.05 1,307.25 5,972,944.53 636,833.54 0.00 4,959.56 BCGL 11,000.00 60.02 128.01 8,888.08 -8,826.64 -4,829.02 1,354.56 5,972,908.43 636,881.50 0.00 5,005.62 11,020.74 60.02 128.01 8,898.44 -8,837.00 -4,840.08 1,368.71 5,972,897.63 636,895.85 0.00 5,019.40 23SB 11,100.00 60.02 128.01 8,938.05 -8,876.61 -4,882.35 1,422.80 5,972,856.34 636,950.69 0.00 5,072.06 11,138.80 60.02 128.01 8,957.44 -8,896.00 -4,903.05 1,449.28 5,972,836.13 636,977.54 0.00 5,097.84 22TS 11,200.00 60.02 128.01 8,988.03 -8,926.59 -4,935.69 1,491.05 5,972,804.25 637,019.89 0.00 5,138.51 11,240.85 60.02 128.01 9,008.44 -8,947.00 -4,957.48 1,518.93 5,972,782.97 637,048.15 0.00 5,165.65 21 TS 11,286.86 60.02 128.01 9,031.43 -8,969.99 -4,982.02 1,550.33 5,972,759.01 637,079.99 0.00 5,196.23 4 1/2" 11,286.87 60.02 128.01 9,031.44 -8,970.00 -4,982.02 1,550.34 5,972,759.00 637,080.00 0.00 5,196.23 Total Depth:11286.87'MD,9031.44'TVD-R-12A T3 BHL 3/30/2011 11.18.11PM Page 5 COMPASS 2003.16 Build 71 Halliburton Company HALLIBURTON Standard Proposal Report Database: .Sperry EDM.16 PRD Local Co-ordinate Reference: Well R-12 Company: BP-Alaska TVD Reference: BFE@21.94'+D25RKB@39.50'=61.44'@ 61.441 Project: Prudhoe Bay MD Reference: BFE@21.94'+D25RKB@39.50'=61.44'@ 61.44f Site: PB R Pad North Reference: True Well: R-12 Survey Calculation Method: Minimum Curvature Wellbore: Plan R-12A Design: R-12A WP19 Targets Target Name - Dip Angle Dip Dir. TVD +N/-S +EI-W Northing Easting -Shape (°) (°) (ft) (ft) (ft) (ft) (ft) 11 R-12A T3 BHL 0.00 0.00 9,031.44 -4,982.02 1,550.34 5,972,759.00 637,080.00 -Point R-12A T1 0.00 0.00 8,501.44 -4,490.13 954.09 5,973,240.00 636,475.00 -Point R-12A Fault 1 0.00 0.00 5,821.44 -2,632.90 -527.71 5,975,070.00 634,960.00 -Polygon Point 1 5,821.44 -2,632.90 -527.71 5,975,070.00 634,960.00 Point 2 5,821.44 -2,722.29 -9.20 5,974,990.00 635,480.00 Point 3 5,821.44 -2,713.14 591.11 5,975,010.00 636,080.00 Point 4 5,821.44 -2,722.29 -9.20 5,974,990.00 635,480.00 R-12AT2 0.00 0.00 8,771.44 -4,704.54 1,195.27 5,973,030.00 636,720.00 -Point R-12A GeoPoly 0.00 0.00 8,771.44 -4,593.52 1,140.26 5,973,140.00 636,663.00 -Polygon Point 1 8,771.44 -4,593.52 1,140.26 5,973,140.00 636,663.00 Point 2 8,771.44 -4,745.69 981.47 5,972,985.00 636,507.00 Point 3 8,771.44 -5,072.08 1,275.65 5,972,664.00 636,807.00 Point4 8,771.44 -5,208.90 1,651.26 5,972,534.00 637,185.00 Point5 8,771.44 -4,981.18 1,835.42 5,972,765.00 637,365.00 Point6 8,771.44 -4,593.52 1,140.26 5,973,140.00 636,663.00 R-12A GeoPoly TSGR 0.00 0.00 8,501.44 -4,490.13 954.09 5,973,240.00 636,475.00 -Circle(radius 150.00) R-12A Fault 3 0.00 0.00 8,831.44 -4,603.82 326.88 5,973,115.00 635,850.00 -Polygon Point 1 8,831.44 -4,603.82 326.88 5,973,115.00 635,850.00 Point 2 8,831.44 -4,584.09 1,172.44 5,973,150.00 636,695.00 I Point 3 8,831.44 -4,710.32 1,515.24 5,973,030.00 637,040.00 I Point 4 8,831.44 -4,676.59 2,416.07 5,973,080.00 637,940.00 Point 5 8,831.44 -4,710.32 1,515.24 5,973,030.00 637,040.00 I Point 6 8,831.44 -4,584.09 1,172.44 5,973,150.00 636,695.00 1 R-12A Fault 2 0.00 0.00 6,191.44 -3,258.45 -228.95 5,974,450.00 635,270.00 -Polygon Point 1 6,191.44 -3,258.45 -228.95 5,974,450.00 635,270.00 Point 2 6,191.44 -3,185.51 162.46 5,974,530.00 635,660.00 Point 3 6,191.44 -3,023.65 615.50 5,974,700.00 636,110.00 Point4 6,191.44 -3,185.51 162.46 5,974,530.00 635,660.00 R-12A Fault 4 0.00 0.00 8,831.44 -4,886.03 721.88 5,972,840.00 636,250.00 -Polygon Point 1 8,831.44 -4,886.03 721.88 5,972,840.00 636,250.00 Point 2 8,831.44 -5,169.83 1,481.94 5,972,570.00 637,015.00 Point 3 8,831.44 -5,292.99 1,654.75 5,972,450.00 637,190.00 Point4 8,831.44 -7,151.14 2,081.28 5,970,600.00 637,650.00 Point 5 8,831.44 -5,292.99 1,654.75 5,972,450.00 637,190.00 Point 6 8,831.44 -5,169.83 1,481.94 5,972,570.00 637,015.00 3/30/2011 11:18:11 PM Page 6 COMPASS 2003.16 Build 71 Halliburton Company HALLIBURTON Standard Proposal Report Database: .Sperry EDM.16 PRD Local Co-ordinate Reference: Well R-12 Company: BP-Alaska TVD Reference: BFE@21.94'+D25RKB@39.50'=61.44'@ 61.44f Project: Prudhoe Bay MD Reference: BFE@21.94'+D25RKB@39.50'=61.44'@ 61.44f Site: PB R Pad North Reference: True Well: R-12 Survey Calculation Method: Minimum Curvature Wellbore: Plan R-12A Design: R-12A WP19 Casing Points Measured Vertical Casing Hole Depth Depth Diameter Diameter (ft) (ft) Name (") (") 10,337.31 8,501.44 7" 8-1/2 8-1/2 11,286.86 9,031.43 41/2" 4-1/2 6-1/8 Formations Measured Vertical Vertical Dip Depth Depth Depth SS Dip Direction (ft) (ft) ft Name Lithology (0) (0) 10,146.85 8,336.44 TJB 10,234.57 8,412.44 TJA 10,489.40 8,622.44 TSAD 10,806.63 8,791.44 PGOC 10,910.68 8,843.44 POWC 9,678.20 7,930.44 TJD 8,136.92 6,602.44 CM1 8,900.21 7,256.44 TKNG 10,786.62 8,781.44 TCGL 6,771.86 5,725.44 CM3 7,950.25 6,461.44 CM2 10,337.31 8,501.44 TSGR 8,594.32 6,991.44 LCU 10,009.49 8,217.44 TJC 11,138.80 8,957.44 22TS 11,240.85 9,008.44 21TS 10,930.69 8,853.44 BCGL 6,346.87 5,455.44 WS 9,466.97 7,747.44 TJE 10,646.50 8,711.44 42SB 11,020.74 8,898.44 23SB 10,383.92 8,541.44 TSHU 8,369.23 6,796.44 THRZ 9,259.20 7,567.44 TJF 3/30/2011 11:18:11 PM Page 7 COMPASS 2003.16 Build 71 Halliburton Company H A L L I B U R TO N Standard Proposal Report Database: .Sperry EDM .16 PRD Local Co-ordinate Reference: Well R-12 Company: BP-Alaska TVD Reference: BFE@21.94'+D25RKB@39.50'=61.44'@ 61.44f Project: Prudhoe Bay MD Reference: BFE@21.94'+D25RKB@39.50'=61.44'@ 61.44f Site: PB R Pad North Reference: True Well: R-12 Survey Calculation Method: Minimum Curvature Wellbore: Plan R-12A Design: R-12A WP19 Plan Annotations Measured Vertical Local Coordinates Depth Depth +N/-S +EI-W (ft) (ft) (ft) (ft) Comment 6,500.00 5,553.95 -2,389.07 -43.44 KOP/Start in 9 5/8"CSG; Dir 12°/100':6500'MD,5553.95'TVD:65°LT TF 6,520.00 5,566.73 -2,404.41 -44.53 End Dir :6520'MD,5566.73'TVD 6,540.00 5,579.36 -2,419.90 -45.25 Start Dir 4°/100':6540'MD,5579.36'TVD 6,990.00 5,861.49 -2,763.89 8.80 End Dir :6990'MD,5861.49'TVD 7,745.00 6,324.87 -3,323.03 215.34 Start Dir 4°/100':7745'MD,6324.87'TVD 8,345.65 6,776.01 -3,673.71 385.71 End Dir :8345.65'MD,6776.01'TVD 10,337.17 8,501.32 -4,490.07 954.05 Start Dir 4°/100': 10337.17'MD,8501.32'TVD 10,337.31 8,501.44 -4,490.13 954.09 End Dir :10337.31'MD,8501.44'TVD 10,357.31 8,518.77 -4,498.33 959.79 Start Dir 13.5°/100':10357.31'MD,8518.77'TVD 10,596.01 8,686.22 -4,613.80 1,078.61 End Dir : 10596.01'MD,8686.22'TVD 10,765.76 8,771.02 -4,704.09 1,194.69 Start Dir 13.5°/100':10765.76'MD,8771.02'TVD 10,766.61 8,771.44 -4,704.54 1,195.27 End Dir : 10766.61'MD,8771.44'TVD 11,286.87 9,031.44 -4,982.02 1,550.34 Total Depth: 11286.87'MD,9031.44'TVD 3/30/2011 11:18:11PM Page 8 COMPASS 2003.16 Build 71 mmimmmm n a 'e 0 Q, Q O) o - b b O _=` S. 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Q U co U BP Anticollision Report Company: North America-ALASKA-BP Local Co-ordinate Reference: Well R-12 Project: Prudhoe Bay TVD Reference: BFE@21.94'+D25RKB@39.50'=61.44'@ 61.44ft(BFE Reference Site: PB R Pad MD Reference: BFE@21.94'+D25RKB@39.50'=61.44'@ 61.44ft(BFE Site Error: 0.00ft North Reference: True Reference Well: R-12 Survey Calculation Method: Minimum Curvature Well Error: 0.00ft Output errors are at 1.00 sigma Reference Wellbore Plan R-12A Database: EDM.16-ANC Prod-WH24P Reference Design: R-12A WP19 Offset TVD Reference: Offset Datum Reference R-12A WP19 Filter type: GLOBAL FILTER APPLIED:All wellpaths within 200'+100/1000 of referE Interpolation Method: MD Interval 25.00ft Error Model: ISCWSA Depth Range: 6,500.00 to 11,286.87ft Scan Method: Tray.Cylinder North Results Limited by: Maximum center-center distance of 1,324.74ft Error Surface: Elliptical Conic Survey Tool Program Date 3/31/2011 From To (ft) (ft) Survey(Wellbore) Tool Name Description 106.15 6,500.00 R-12 Srvy GYD-CT-CMS(R-12) GYD-CT-CMS Gyrodata cont.casing m/s 6,500.00 6,800.00 R-12A WP19(Plan R-12A) INC+TREND Inclinometer+known azi trend 6,800.00 10,337.31 R-12A WP19(Plan R-12A) MWD+IFR+MS MWD+IFR+Multi Station 10,337.31 11,286.87 R-12A WP19(Plan R-12A) MWD+IFR+MS MWD+IFR+Multi Station 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 J Pad J-26-J-26-J-26 Out of range PB N Pad N-06-N-06-N-06 11,272.93 10,925.00 617.45 287.09 366.03 Pass-Major Risk PB R Pad R-04-R-04-R-04 6,500.00 6,375.00 576.50 260.19 485.70 Pass-Major Risk R-05-R-05-R-05 Out of range R-05A-R-05A-R-05A Out of range R-10-R-10-R-10 Out of range R-11 -R-11 -R-11 Out of range R-11 -R-11A-R-11A Out of range R-12-R-12-R-12 6,801.12 6,800.00 35.75 214.49 -161.22 FAIL-Major Risk R-13-R-13-R-13 Out of range R-14-Plan R-14B-R-14B WP6.0 6,765.00 7,350.00 1,291.15 346.94 1,009.07 Pass-Major Risk R-14-R-14-R-14 Out of range R-14-R-14A-R-14A Out of range R-15-R-15-R-15 Out of range R-24-R-24-R-24 6,500.00 6,775.00 1,135.36 196.35 962.85 Pass-Major Risk R-32-R-32-R-32 Out of range R-34-R-34-R-34 Out of range R-35-R-35-R-35 Out of range R-36-R-36-R-36 Out of range R-40-R-40-R-40 Out of range R-40PB1 -R-40PB1 -R-40PB1 Out of range 3/31/2011 8:56:50AM Page 2 of 3 COMPASS 2003.16 Build 73 BP Anticollision Report Company: North America-ALASKA-BP Local Co-ordinate Reference: Well R-12 Project: Prudhoe Bay TVD Reference: BFE@21.94'+D25RKB@39.50'=61.44'@ 61.44ft(BFE Reference Site: PB R Pad MD Reference: BFE@21.94'+D25RKB@39.50'=61.44'@ 61.44ft(BFE Site Error: O.00ft North Reference: True Reference Well: R-12 Survey Calculation Method: Minimum Curvature Well Error: 0.00ft Output errors are at 1.00 sigma Reference Wellbore Plan R-12A Database: EDM.16-ANC Prod-WH24P Reference Design: R-12A WP19 Offset TVD Reference: Offset Datum Reference Depths are relative to Coordinates are relative to:R-12 Offset Depths are relative to Offset Datum Coordinate System is US State Plane 1927(Exact solution),Alaska Zone 04 Central Meridian is 150°0'0.000 W° Grid Convergence at Surface is: 1.04° Ladder Pict I , 1400 I I I I I I I I I I I I _ I I I I I I I I I •� 1 I ▪ 1050 O L f) I 1 1 1 I 1 I I 1 I I I I 1 I I I 1 c I I I I I I .J as I I I It > I I 1 I I 1 I I sZ I I I I I 1 I 1 cn 700 ' a) I I I I I I I I I I C I I I 1 I I I I I I I I J J J _ O -I 1 I I I 1 B I 1 I I I 1 I 1 I I I I Q1 350 I I I I I I I I I I I I I I I I 1 I J J J _ _ __J_ ._ __ J J _ I I I I 1 I 1 I I 1 I I I I I I I I I I I I I 0 I I I 0 2000 4000 6000 8000 10000 12000 M c L E G Depth(2000 fUin) D R-12.R-12,R-12V1 R-32APB1,R-32AP1)1,R-32APB1 V4 2 $- R-13.R-13,R-13 V1 -- R-34,PIan R-34A.R-34A1niP4LiVD '1 R-14.PIanR-14B.R-14BWP6DVO R-34,PIan R34L1,R-34L1 WP10\.D '1 -}• R-14,R-14,R-14V5 R-34,PIan R34L2,R-34L2WP10\'1) AN2 —f R-14.R-14A,R-14AV3 R-34,R-34,R-34V1 '1 R-15,R-15,R-15 V1 R-34 Contingenc}(R-34contingencx R.: IAV3 R-15A,R-15A,R-15AV4 R-35,R-35.R-35 V1 1 —4f.- R-24,R-24,R-24V1 $ R-36,R-36,R-36 V1 )AV2 $ R-25,R-25,R-25V1 R-40,R-40,R-40 V2 1 R-25A,R-25A,R-25AV3 R-40PB1,R-40PB1,R-40PB1 V14 3/31/2011 8:56:50AM Page 3 of 3 COMPASS 2003.16 Build 73 Alaska Department of Natural Resources Land Administration System Page 1 of 3 Alaska Mapper Land Records/Status Plats Recorder's Search State Cabins Natural Resources I find Alaska DNR Case Summary File Type: ADL File Number: 28279 8 Printable Case File Summary See Township,Range,Section and Acreage? New Search o Yes No LAS Menu I Case Abstract l Case Detail I Land Abstract —1111% File: ADL 28279 "'yap Search for Status Plat Updates As of 04/19/2011 Customer: 000107377 BP EXPLORATION(ALASKA)INC PO BOX 196612/900 E. BENSON BL ATTN:LAND MANAGER-ALASKA ANCHORAGE AK 995196612 Case Type: 784 OIL&GAS LEASE COMP DNR Unit: 780 OIL AND GAS File Location:DOG DIV OIL AND GAS Case Status:35 ISSUED Status Date: 08/19/1965 Total Acres: 2459.000 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: 012N Range: 013E Section: 29 Section Acres:640 Search Plats Meridian: U Township: 012N Range: 013E Section: 30 Section Acres:588 Meridian: U Township: 012N Range: 013E Section: 31 Section Acres:591 Meridian: U Township: 012N Range: 013E Section: 32 Section Acres:640 Legal Description 05-28-1965 ***SALE NOTICE LEGAL DESCRIPTION*** C14-90 T12N, R13E, UM 29, 30, 31, 32 2,459.00 04-01-1997*****UNITIZED AND LEASE LEGAL DESCRIPTION******** ENTIRE LEASE COMMITTED TO PRUDHOE BAY UNIT PRUDHOE BAY UNIT TRACT 23 T. 12 N., R. 13 E., UMIAT MERIDIAN,ALASKA SECTION 29:ALL, 640 ACRES; SECTION 30:ALL, 588 ACRES; SECTION 31:ALL, 591 ACRES; SECTION 32:ALL, 640 ACRES; http://dnr.alaska.gov/projects/las/Case Summary.cfm?FileType=ADL&FileNumber=2827... 4/19/2011 Alaska Department of Natural Resources Land Administration System Page 1 of 3 Alaska Mapper Land Records/Status Plats Recorder's Search State Cabins Natural Resources I find Alaska DNR Case Summary File Type: ADL File Number. 28282 eg Printable Case File Summary See Township,Range,Section and Acreage? [ New search Yes No LAS Menu I Case Abstract I Case Detail I Land Abstract File: ADL 28282 "p Search for Status Plat Updates As of 04/19/2011 Customer: 000107377 BP EXPLORATION(ALASKA)INC PO BOX 196612/900 E.BENSON BL ATTN:LAND MANAGER-ALASKA ANCHORAGE AK 995196612 Case Type:784 OIL&GAS LEASE COMP DNR Unit: 780 OIL AND GAS File Location:DOG DIV OIL AND GAS Case Status: 35 ISSUED Status Date: 08/19/1965 Total Acres: 2469.000 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: 013E Section: 05 Section Acres:640 Search Plats Meridian: U Township: 011N Range: 013E Section: 06 Section Acres:593 Meridian: U Township: 011N Range: 013E Section: 07 Section Acres:596 Meridian: U Township: 011N Range: 013E Section: 08 Section Acres:640 Legal Description 05-28-1965 ***SALE NOTICE LEGAL DESCRIPTION*** C14-93 T11 N-R13E-UM 5,6,7,8 2469.00 04-01-1977******UNITIZED AND LEASE LEGAL DESCRIPTION*********** ENTIRE LEASE COMMITTED TO PRUDHOE BAY UNIT PRUDHOE BAY UNIT TRACT 46 T. 11 N., R. 13 E., UMIAT MERIDIAN,ALASKA SECTION 5:ALL, 640 ACRES; SECTION 6:ALL, 593 ACRES; SECTION 7:ALL, 596 ACRES; http://dnr.alaska.gov/projects/las/Case Summary.cfm?FileType=ADL&FileNumber=2828... 4/19/2011 OVERSIZED DOCUMENT INSERT This file contains one or more oversized documents. These materials may be found in the original hard file or check the parent folder to view it in digital format. TRANSMITTAL LETTER CHECKLIST WELL NAME f Leh/ ,e-/.0-7/9 PTD# o2/JO.S�S ✓ Development Service Exploratory Stratigraphic Test Non-Conventional Well FIELD: 7.G'C/L14/06_/SAI/ POOL: -el//,ii/O‘-xo, �G Circle Appropriate Letter/Paragraphs to be Included in Transmittal Letter CHECK ADD-ONS WHAT (OPTIONS) TEXT FOR APPROVAL LETTER APPLIES MULTI LATERAL The permit is for a new wellbore segment of existing well (If last two digits in Permit No. ,API No. 50- - - API number are between 60-69) Production should continue to be reported as a function of the original API number stated above. PILOT HOLE In accordance with 20 AAC 25.005(f), all records, data and logs acquired for the pilot hole must be clearly differentiated in both well name ( PH) and API number (50- - - ) from records, data and logs acquired for well SPACING The permit is approved subject to full compliance with 20 AAC EXCEPTION 25.055. Approval to perforate and produce / inject is contingent upon issuance of a conservation order approving a spacing exception. assumes the liability of any protest to the spacing exception that may occur. DRY DITCH All dry ditch sample sets submitted to the Commission must be in SAMPLE no greater than 30' sample intervals from below the permafrost or from where samples are first caught and 10' sample intervals through target zones. Non-Conventional Please note the following special condition of this permit: Well production or production testing of coal bed methane is not allowed for (name of well) until after (Company Name) has designed and implemented a water well testing program to provide baseline data on water quality and quantity. (Company Name) must contact the Commission to obtain advance approval of such water well testing program. Rev: 1/11/2008 moa0 I- -0 O a - (o n 3 D n ( pa (n v (n 'O • I— o ° r; d '3 O A A A O m m p N CO Cn u).0 co G o v co v 0 o 7p p m m v o o E m ° o 0 cc co o co - _, - -I — o C) Ico W W W W W W W W co N N N N N IV IV N N N - - - --- (0 CO V 0) Cn . C.) N -, - 7 CO 03 -4 0) C71 -0. W N -, 0 CD CO 7.1 O) U) .4. W CO - 0 CO 00 0) CI1 41. W N O r m n 'COW b b ',K ,�, ',g 'n 'co 'co ;v '�. D '-7 'D n 0 'n 'n ti) n v D ',g n b v o 'o = cn ,g ,g * 'c r- b z . 0 w IHH o ,co 3 Nco 'd (o 'n c (o ? 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