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211-029
CAUTION: This email originated from outside the State of Alaska mail system. Do not click links or open attachments unless you recognize the sender and know the content is safe. From:Wallace, Chris D (OGC) To:AOGCC Records (CED sponsored) Subject:FW: Injector W-221 (PTD #2110290) IAP bleed Date:Monday, June 24, 2024 10:50:33 AM From: PB Wells Integrity <PBWellsIntegrity@hilcorp.com> Sent: Monday, June 24, 2024 10:32 AM To: Wallace, Chris D (OGC) <chris.wallace@alaska.gov> Cc: Regg, James B (OGC) <jim.regg@alaska.gov>; Torin Roschinger <Torin.Roschinger@hilcorp.com>; Oliver Sternicki <Oliver.Sternicki@hilcorp.com>; PB Wells Integrity <PBWellsIntegrity@hilcorp.com> Subject: Injector W-221 (PTD #2110290) IAP bleed Mr. Wallace, WAG injector W-221 (PTD #2110290) was identified to have an increasing IA pressure trend. At this point, it is unclear to the cause of the increasing trend. The pressure was bled on 06/23/24 from 1,120 psi to 500 psi. This is to notify you that we will continue to monitor the IAP and if it is determined that the well has TxIA communication, it will be made UNDER EVALUATION for further diagnostics. Please respond with any questions. Andy Ogg Hilcorp Alaska LLC Field Well Integrity andrew.ogg@hilcorp.com P: (907) 659-5102 M: (307)399-3816 The information contained in this email message is confidential and may be legally privileged and is intended only for the use of theindividual or entity named above. If you are not an intended recipient or if you have received this message in error, you are herebynotified that any dissemination, distribution, or copy of this email is strictly prohibited. If you have received this email in error, pleaseimmediately notify us by return email or telephone if the sender's phone number is listed above, then promptly and permanently deletethis message. While all reasonable care has been taken to avoid the transmission of viruses, it is the responsibility of the recipient to ensure that the onward transmission, opening, or use of this message and any attachments will not adversely affect its systems or data. No responsibility is accepted by the company in this regard and the recipient should carry out such virus and other checks as it considers appropriate. 4.D00 3,800 3,6DD 3.400 3.200 3,0W 2,8D0 2,600 2.400 2,2D0 2,DW 1.900 1,600 1,40D 1,200 1,0W 840 6DD 400 200 [I?.VVPZ 03+31124 04107/24 04114I24 04I21124 04,2824 05@524 Wel I: W-221 MlZ74 05+19124 052&24 MOZ24 06 %24 QE11EF_ 0 0 OE2324 30D 29D 23D 270 260 25D 240 23D 220 210 20D 19D 180 170 16D 3 150 m 140 130 120 110 1DD 90 80 '0 60 5D 40 30 20 10 TIO Plot f Tubing On ■ Bleed * Operable + Not Oper ♦ Under Eval IF MANIA -A MAN OA MAN_OOA MAN OOOA O MAN WHT MEMORANDUM State of Alaska Alaska Oil and Gas Conservation Commission DATE:Tuesday, December 5, 2023 SUBJECT:Mechanical Integrity Tests TO: FROM:Bob Noble P.I. Supervisor Petroleum Inspector NON-CONFIDENTIAL Hilcorp North Slope, LLC W-221 PRUDHOE BAY UN POL W-221 Jim Regg InspectorSrc: Reviewed By: P.I. Suprv Comm ________ JBR 12/05/2023 W-221 50-029-23444-00-00 211-029-0 G SPT 4988 2110290 1500 2150 2167 2152 2152 20 50 50 50 4YRTST P Bob Noble 10/8/2023 30 MinPretestInitial15 Min Well Name Type Test Notes: Interval P/F Well Permit Number: Type Inj TVD PTD Test psi API Well Number Inspector Name:PRUDHOE BAY UN POL W-221 Inspection Date: Tubing OA Packer Depth 57 2967 2891 2873IA 45 Min 60 Min Rel Insp Num: Insp Num:mitRCN231009085931 BBL Pumped:4.7 BBL Returned:4 Tuesday, December 5, 2023 Page 1 of 1 MEMORANDUM State of Alaska Alaska Oil and Gas Conservation Commission DATE: Monday, October 14, 2019 TO: Jim Regg 2�f ci t p� d'j(t 9 P.I. Supervisor ( l SUBJECT: Mechanical Integrity Tests BP Exploration (Alaska) Inc. W-221 FROM: Klatt Herrera PRUDHOE BAY UN POL W-221 Petroleum Inspector Ste: Inspector Reviewed By: P.I. Supry ter` NON -CONFIDENTIAL Comm Well Name PRUDHOE BAY UN POL W-221 API Well Number 50-029-23444-00-00 Inspector Name: Matt Herrera Permit Number: 211-029-0 Inspection Date: 10/10/2019 , IUSp Num: mitMFH191010153141 Rel Insp Num: Packer Depth Pretest Initial 15 Min 30 Min 45 Min 60 Min WelW-221 Type In' W TVD 4988 - Tubing 1277 1288 - 1289 11239 p'I'll F 2110290 Type Test sPT Test psi 1500 - Ip 14 2500 2464 2456 BBL Pumped: 9 IBBL Returned: 3.1 OA 7 12 13 13 Interval 4YRTST P/F P Notes: IA Pressure tested to 2500 PSI Per Operator 2(?Ocq, L"?"s Monday, October 14, 2019 Page I of I Wallace, Chris D (CED) From: AK, GWO Well Integrity Engineer <AKGWOWellSiteEnginee@bp.com> Sent: Sunday, September 1, 2019 8:08 AM To: Wallace, Chris D (CED) Cc: AK, GWO Projects Well Integrity; AK, GWO Well Integrity Well Information Subject: GC2 Injectors overdue for AOGCC MIT -IA Mr. Wallace, Injectors W-207 (PTD # 2030490), W-221 (PTD #2110290), W-220 (PTD #210260), W-223 (PTD #211060), R-06 (PTD #1981270), and W-219 (PTD #2101050) were due for 4 year AOGCC MIT-IAs at the end of August 2019. Due to the GC2 TAR the wells have been shut in and were not tested before the end of the month. GC2 is expected to be back up to full rate by the end of next week so BP is requesting to leave the above mentioned wells in Operable status and track them on the monthly compliance report until they are brought back online and pressure tested. Please advise if this is not acceptable, Joshua Stephens Well Integrity Engineer Off ice: 907-659-8110 • • MEMORANDUM State of Alaska Alaska Oil and Gas Conservation Commission TO: Jim Regg DATE: Wednesday,August 12,2015 P.I.Supervisor ��q ' 1 �I SUBJECT: Mechanical Integrity Tests BP EXPLORATION(ALASKA)INC W-221 FROM: Bob Noble PRUDHOE BAY UN POL W-221 Petroleum Inspector Src: Inspector Reviewed By;._. P.I.Supry J — NON-CONFIDENTIAL Comm Well Name PRUDHOE BAY UN POL W-221 API Well Number 50-029-23444-00-00 Inspector Name: Bob Noble Permit Number: 211-029-0 Inspection Date: 8/10/2015 Insp Num: mitRCN1508I1120022 Rel Insp Num: Packer Depth Pretest Initial 15 Min 30 Min 45 Min 60 Min wellj W-221 Type Inj W- TVD 4988 -�Tubing 1645 -11667 11667 1668 - I PTD I 2110290 ' Type Test SPT(Test psi 1500 IA 258 I 2500 2471 • 2464 1 — — — Interval l4YRTST _ �P/F P OA 0 127 l 128 ' 126 - 1 Notes: Wednesday,August 12,2015 Page 1 of 1 0 0 0 0 2 4 ) , ...... 0 O O '°° N 'Dy O O 0c N vU NN cd p O O O) 2 U a) U N m 0 N N u) a) a a) N N ti 8 9 N J O 2 co N N c0 Q' p cz N N c0 In I T p a ao a0 � a 2 2 � c C I a) II a) z U co. 'O co. O O a)p L t L 66 60 Z Z c 1 = oo 2 2 a) O m ,n C C C m Al m N 0 Y. 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J it C) Q ; N o N o $ -a-2 N z (L V lL 2 it 2 it U it lL 4 Q C Y CO U C O U V V V C E U N U U d Z 'IZ) Ce C G) N 'C 'C �/ y (n o N o� F2-2 o N o o E (..E)-- '10 \ } s LIQ Q W F- W rt W w W F- W W C) CD l • U 1 0 0 0 0 0 0 E in E .� 00 (��13= 1- LU NNNNNNN III 7 0 N Z y N m ag IX OJ (O (D CO (O CO f0 N CI. i: E LU X U O QCD C• ° - J % Z N y d (n O CDw N Q E wa C d f6 = o 7 I'1 1 O U) � c 2 U C) H M c C g C N .a Uti v z J N a0O a H 0 o zz _ ("n 5 m G/�/� = • N CO C I 0 in' W co 8 gE m (O C c0 I- E II w = CO0 Cl) c V, x O p N co M • _ - i QCCco 4:C a. c a 3 m a Z E o v T D E 0 0" 2 Tc, I z IVO co CO CO CO CO CO = to ca m II N o 0 0 0 D — II c (!) 1, N I CO CO Co (0 �o co 0 I 1 } c 0 o 0 0 0 0 0 E a O T W > (0 (0 a in in in C W m N 1- 0 0 (CO CO 0 0 C > E LU E a j ami N N N N N N N N W O d C \ \ E Z aai Y cc p �� N ) J � d Z a g o c 0 0 0 0 0 0 8 a) t .5 , y I m C) 0. = 0 E a E 0 I 0 0 0 0 0 0 1 d ' OLL o 2 aa) o o a 2 w W W W W W J3 _ 0 a C) H O O bp Date: 06/19/2013 Transmittal Number:93294 (7q )%9' BPXA WELL DATA TRANSMITTAL Enclosed are the materials requested for W-221, sent on behalf of Schlumberger. Please replace all previously delivered data with the wrong API#with these. dJ") If you have any questions,please contact Analisa Steger: 907-564-5439 or analisa.stegerAbp.com SW Name Date Company Description Vision*Service Recorded Mode Log 2MD W-221 06/08/2011 BPXA (Measured Depth) Vision*Service Recorded Mode Log 5MD W-221 06/08/2011 BPXA (Measured Depth) Vision*Service Recorded Mode Log 2TVDSS W-221 06/08/2011 BPXA (True Vertical Depth Subsea) Vision*Service Recorded Mode Log 5TVDSS W-221 06/08/2011 BPXA (True Vertical Depth Subsea) W-221 06/08/2011 BPXA CD-ROM: FE Data, LAS Data, Survey Data W-221 06/09/2011 BPXA Survey Reports (2 copies) i /41 se ign an turn o opy of this transmittal. Thank You, Analisa Steger Petrotechnical Data Center AOGCC Makana K. Bender Petrotechnical Data Center LR2-1 900 E. Benson Blvd.PO Box 196612 Anchorage,AK 99519-6612 Hunt, Jennifer L (DOA) From: Hunt, Jennifer L (DOA) Sent: Monday, June 10, 2013 2:09 PM To: 'lastufjn@BP.com' Subject: Data In the permit to drill 211-029, BP said the following logs would be run and AOGCC hqsn't received them yet. I am requesting these logs from you if they were run. The following logs are missing from our records: GR, RES, NEU, DENS, PWD both prints and digital data. -Jenni Hunt Alaska Oil and Gas Conservation Commission I Statistical Technician II I 907.793.1241 MEMORANDUM State of Alaska Alaska Oil and Gas Conservation Commission DATE:Tuesday,September 27,2011 TO: Jim Regg ? of Iii' P.I.Supervisor q SUBJECT: Mechanical Integrity Tests BP EXPLORATION(ALASKA)INC W-221 1 FROM: Chuck Scheve PRUDHOE BAY UN ORIN W-221 Petroleum Inspector Src: Inspector Reviewed By: P.I.Supry n NON-CONFIDENTIAL Comm Well Name: PRUDHOE BAY UN ORIN W-221 API Well Number: 50-029-23444-00-00 Inspector Name: Chuck Scheve Insp Num: mitCS110901165712 Permit Number: 211-029-0 Inspection Date: 9/1/2011 Rel Insp Num: Packer Depth Pretest Initial 15 Min. 30 Min. 45 Min. 60 Min. Well W-221 -Type Inj. 1 W - TVD 1 4988 ' IA 300 0 2040 _ 2040 - P.T.D 2110290 •ITYpeTest sPT Test psi 1500 • OA 120 250 260 260 Interval INITAL - p/F P Tubing 1600 I 1600 1600 1600 Notes: Tuesday,September 27,2011 Page 1 of 1 Saltmarsh, Arthur C (DOA) From: Hubble, Terrie L [Terrie.Hubble@bp.com] Sent: Monday, September 19, 2011 11:24 AM To: Saltmarsh, Arthur C (DOA) Subject: FW: PBU W-221 /PTD#211-029 Oops... Left off"Method of Operations" From: Hubble,Terrie L Sent: Monday, September 19, 2011 11:21 AM To: 'Saltmarsh, Arthur C(DOA)' Subject: PBU W-221 / PTD # 211-029 Hi Art, Please reference the following well: Well Name: PBU W-221 Permit #: 211-029 API #: 50-029-23444-00-00 Top Perf MD: 12140' Bottom Perf MD: 12385' This well began Injection on August 27, 2011 Method of Operations is: Gas Injection, Followed 3 days later by Water Injection There is no test data for injection wells. 1 • • pTP zit- O Z ? I k►:C AN CST. iT GP.1TY REPORT • c'tco..k kYl 0 25'A ,,c'i LAO) FUD DAT Z : : b<2 1/2-€)// OPER &. FIELD 6 P J D h S-Jr I oo G Rr?.tiSZ : , 6 `�l_t'1 r.. iMJ. NUMBER (1J 2Z_ • LL DATA '):Y) : /2 747°./431. 5 D. ?7 'rR ; FM . /ZDc.L3? 53(. t3 .vD :� using ' e_ •._ Sbae. ::211160 ?s (T ; DV , _ �"a h I -•ine:: : ....21.................. Shoe : f Z7/o ,YD 5-qt( 'TVD ; TOE : 0 0 TVD et 'ubi^g 3 `-" Packca- j2-6.5-2,11) TVD ; Set. at .ole S4.,e _ Y34 4 aria ; PerfI /Z't `/ 0 to / Zr 7s�' 0./34 12. 2 . 7 - /230z. OB_ ISCp.ANICZ, INTEGRITY -- PART y i . lZ 3' - l2 3 85" o Sd Asara .s Press T.'G s t: I y0.50 /r 1 5 tail), 397s— ; 0 t ir,. 3 9 SZ? /0.347 • Cement: Voles Arat. Li� ex 4/83 bb/sctb /35— ; DV" Cr t vol to cove perfs age-C. 74, c...�.- 4....e7-e-4-___,L.,..„.„._ .!a...rte'.tile. sc.-w.n.r.r+i.'R_azs+ano.n.....�.�-- - 4 _— —' '?''r.ti'i,-v. •.....errt�.e'ise��'.+..-..�-ew' T'hecrecjcj.1 TOC 4'SP'3 7 ' it •The-- w,,�30 2 x c-c-sr. � Tbc- X0 ' p, .....Its t r. 3 �.�. �,. c.c.s/7r Cement Bond. Log ilp or No) ; In AOGCC File_—. - CBI- EvaluLtion, zone above perfs t i &, Pte' iILTGrv- . co.�� ? r 4 Z417.4.A.� Pxoci.ucrian Log: Ty” ; Evaluation ,— CONCLUSIONS : t ill ✓f"n e sse..0 /V( I r_ 4 r � r..V. �� ?art. f 2 :• lJ i w ( i A. c..�& ;s,/....A.„... STATE OF ALASKA *r ALASKA OIL AND GAS CONSERVATION COMMISSION WELL COMPLETION OR RECOMPLETION REPORT AND LOG la. Well Status: 0 Oil 0 Gas 0 SPLUG 0 Other 0 Abandoned 0 Suspended 1b. Well Class: 20AAC 25.105 20AAC 25.110 0 Development 0 Exploratory 0 GINJ 0 WINJ ®WAG 0 WDSPL 0 Other No.of Completions One ®Service 0 Stratigraphic 2. Operator Name: 5.Date Comp.,Susp.,or Aband.: 12. Permit to Drill Number: BP Exploration(Alaska)Inc. 6/19/2011 211-029 3. Address: 6.Date Spudded: 13. API Number: P.O. Box 196612,Anchorage,Alaska 99519-6612 5/23/2011 50-029-23444-00-00 4a. Location of Well(Governmental Section): 7.Date T.D.Reached: 14. Well Name and Number: Surface: 6/7/2011 PBU W-221 " 4979'FSL, 1175'FEL,SEC.21,T11N, R12E, UM 8. KB(ft above MSL): 87.8' 15.Field/Pool(s): Top of Productive Horizon: Prudhoe BayField/Orion 4486'FSL,435'FEL,SEC.09,T11N, R12E, UM GL(ft above MSL): 53.5' Total Depth: 9.Plug Back Depth(MD+TVD): Schrader Bluff 4928'FSL,453'FEL, SEC.09,T11N, R12E, UM 12623' 5365' 4b. Location of Well(State Base Plane Coordinates,NAD 27): 10.Total Depth(MD+TVD): 16. Property Designation: Surface: x- 612049 y- 5959956 Zone- ASP4 12720' 5427' ADL 028263-2&028261 TPI: x- 612615 y- 5970032 Zone- ASP4 11.SSSV Depth(MD+TVD): 17. Land Use Permit: Total Depth:x- 612590 Y- 5970474 Zone- ASP4 None 18.Directional Survey: ®Yes 0 No 19.Water depth,if offshore: 20. Thickness of Permafrost(TVD): (Submit electronic and printed information per 20 AAC 25.050) N/A ft MSL 1932'(Approx.) 21.Logs Obtained (List all logs here and submit electronic and printed information per 20 AAC 25.071): 22. Re-Drill/Lateral Top Window MD/TVD: MWD GR, GR, GR, RES, NEU, AZI DENS, PWD, USIT-GPIT N/A 23. CASING,LINER AND CEMENTING RECORD SETTING DEPTH MD SETTING DEPTH TVD HOLE AMOUNT CASING WT.PER FT. GRADE TOP BOTTOM TOP BOTTOM SIZE CEMENTING RECORD PULLED 20" 215.5# A-53 Surface 103' Surface 103' 42" -269 sx Arctic$et_ 13-3/8" 68# L-80 34' 2416' 34' 2059' 16" 1396 sx Arctic Set Lite. 1386 sx Class'G' 9-5/8" 40# L-80 2273' 7948' 1985' 3591' , 12-1/4" 1178 sx LiteCrete.443 sx Class'G' 7" 26# L-80 31' 12710' 31' 5421' 8-3/4" 272 sx LiteCrete.207 sx Class'G' 24. Open to production or injection? IN Yes 0 No 25. TUBING RECORD If Yes,list each interval open SIZE DEPTH SET(MD) PACKER SET(MD/TVD) (MD+TVD of Top&Bottom;Perforation Size and Number): 4-1/2"Gun Diameter,5 spf 3-1/2",9.2#,L-80 12451' 12052'/4988', 12191'/5083' MD TVD MD TVD 12318'/5167' 12140'-12175' 5048'-5072' 26. ACID,FRACTURE,CEMENT SQUEEZE,ETC. 12267'-12302' 5134'-5157' , 12345'-12385' 5185'-5212' COMPLETION DEPTH INTERVAL(MD) AMOUNT AND KIND OF MATERIAL USED 'iii 4 Freeze Protect w/100 Bbls of Diesel ' r Z 27. PRODUCTION TEST Date First Production: Method of Operation(Flowing,Gas Lift,etc.): Not on Injection Yet N/A Date of Test: Hours Tested: Production For OIL-BBL: GAS-MCF: WATER-BBL: CHOKE SIZE: GAS-OIL RATIO: Test Period 4 Flow Tubing Casing Press: Calculated OIL-BBL: GAS-MCF: WATER-BBL: OIL GRAVITY-API(CORR): Press. 24-Hour Rate 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 a Qr I t s per 20 MC 250.071. None I tj L 18 2011 RBDMS JUL 19 10 . AAA f; ;-ii & Cori COM Conmussion Form 10-407 Revised 12/2009 CONTINUED ON REVERSE ' ttCnniage Submit Original Only 29. GEOLOGIC MARKERS(List all formations and mark_ icountered): 30. i IATION TESTS NAME MD ND Well Tested? 0 Yes ®No Permafrost Top 34' 34' If yes,list intervals and formations tested,briefly summarizing test Permafrost Base 2240' 1966' results. Attach separate sheets to this form,if needed,and submit detailed test information per 20 AAC 25.071. Top Ugnu 8110' 3638' None Schrader Bluff NA 11774' 4817' Schrader Bluff NB 11836' 4851' Schrader Bluff NC 11893' 4885' Schrader Bluff NE 11911' 4896' Schrader Bluff NF 11993' 4949' Schrader Bluff OA 12049' 4986' Schrader Bluff OBa 12135' 5045' Schrader Bluff OBb 12193' 5084' Schrader Bluff OBc 12272' 5137' Schrader Bluff OBd 12351' 5189' Schrader Bluff OBe 12450' 5254' Schrader Bluff OBf 12518 5298' Base Schrader Bluff OB 12600' 5351' Top Colville Mudstone Formation at Total Depth(Name): Colville Mudstone 12600' 5351' 31.List of Attachments: Summary of Daily Drilling Reports,Well Schematic Diagram,Surveys 32.I hereby certify that the foregoing i true and correct to the best of my knowledge. 7//�/� Signed: Terrie Hubble �r�� Title: Drilling Technologist Date: PBU W-221 211-029 Prepared By Name/Number. Terrie Hubble, 564-4628 Well Number Permit No./Approval No. Drilling Engineer: Mel Rixse,564-5620 INSTRUCTIONS General: This form is designed for submitting a complete and correct well completion report and log on all types of lands and leases in Alaska. Submit a well schematic diagram with each 10-407 well completion report and 10-404 well sundry report when the downhole well design is changed. Item la: Classification of Service Wells: Gas Injection,Water Injection,Water-Alternating-Gas Injection,Salt Water Disposal,Water Supply for Injection, Observation,or Other. Multiple completion is defined as a well producing from more than one pool with production from each pool completely segregated. Each segregated pool is a completion. Item 4b: TPI(Top of Producing Interval). Item 8: The Kelly Bushing and Ground Level elevation in feet above mean sea level. Use same as reference for depth measurements given in other spaces on this form and in any attachments. Item 13: The API number reported to AOGCC must be 14 digits(ex: 50-029-20123-00-00). Item 20: Report true vertical thickness of permafrost in Box 20. Provide MD and ND for the top and base of permafrost in Box 28. Item 23: Attached supplemental records for this well should show the details of any multiple stage cementing and the location of the cementing tool. Item 24: If this well is completed for separate production from more than one interval(multiple completion),so state in item 1,and in item 23 show the producing intervals for only the interval reported in item 26. (Submit a separate form for each additional interval to be separately produced, showing the data pertinent to such interval). Item 27: Method of Operation: Flowing,Gas Lift,Rod Pump,Hydraulic Pump,Submersible,Water Injection,Gas Injection,Shut-In,or Other(explain). Item 28: Provide a listing of intervals cored and the corresponding formations,and a brief description in this box. Submit detailed description and analytical laboratory information required by 20 AAC 25.071. Item 30: Provide a listing of intervals tested and the corresponding formation,and a brief summary in this box. Submit detailed test and analytical laboratory information required by 20 AAC 25.071. Form 10-407 Revised 12/2009 Submit Original Only TREE= ' CW WELLHEAD= FMC �-� SAFETY 1!l_ ELLANGIEWREQ>70° 93UIRES 2A'SSSV WHEN ACTUATOR= HYD ON MI "'* 2 KB. ELEV= 87.32' PJC DRAFT BF. ELEV= 54' ' 1. ) I 29' —14-1/2"X 3-1/2"XO, ID=2.992" KOP= 300' Max Angle= 77°@ 3505' 20"CONDUCTOR, 114' 2273' — 13-3/8"X 9-7/8"ZXPN LTP Datum MD= 12198' 91.5#,A-53 WELDED, w/FLEX-LOCK LNR HGR,ID=9.5" Datum TVD= 5000'SS ID=19.124" 1 2293' —3-1/2"HES X NIP, ID=3.813" 13-3/8"CSG,68#,L-80 BTC, ID= 12.415" H 2416' 2306' I— 10-3/4"X 9-5/8"XO, ID=8.84" 9-5/8"CSG,404,L-80 BTC,ID=8.835" H 7948' I-4 l Minimum ID = 2.750" @ 12439' X X 12052' I—7"X 3-1/2"BOT PREM PORTED PKR,ID=2.992" 3-1/2" HES XN NIPPLE • 12069' -1 3-1/2"NDPG SINGLE SUB, ID=2.992" 3-1/2"MARKER PUP JT w/RA TAG —I 12075' * WATER FLOOD MANDRELS ST MD TVD DEV TYPE VLV LATCH PORT DATE 5 12089 5014 47 MMG-HW-E DMY RK 0 06/19/11 7"MARKER PUP JT w/RA TAG — 12107' H — 4 12159 5061 48 MMG-HW-D DMY RK 0 06/19/11 3 12228 5108 48 MMG-HW-C DMY RK 0 06/19/11 WI 2 12286 5146 48 MMG-HW-B DMY RK 0 06/19/11 1 12365 5199 48 MMG-HW-A DMY RK 0 06/19/11. Z-1 12191' I--7"X 3-1/2"BOT PREM PORTED PKR, ID=2.992" X • 12208' —3-1/2"NDPG-C SINGLE SUB, iD=2,992" PERFORATION SUMMARY 12318' — 7"X 3-1/2"SOT PREM PORTED PKR, ID=2.965" REF LOG: LWD ON 06/07/11 ANGLE AT TOP PERF: 47°@ 12140' ■ 12335' —3-1/2"NDPG SINGLE SUB, ID=2.992" Note:Refer to Production DB for historical perf data -- SIZE SPF ZONE INTERVAL Opn/Sqz DATE M 4-1/2" IP5 OBa 12140- 12175 0 06/12/11 4-1/2" IP 5 OBc 12267- 12302 0 06/12/11 — 4-1/2" ir 5 OBd 12345- 12385 0 106/12/11I ' 12048' —3-1/2"HES X NIP, ID=2.813" ® ■ 12439' H 3-1/2"HES XN NIP, ID=2.750" 3-1/2"TBG,9.24, L-80 TC-Il, —I 12450' I— / • —I 12451' —I3-1/2"WLEG,ID=2.905" .0087 bpf,ID=2.992" —ELMD H NOT LOGGED 7"CSG, 264,L-80 VAM TOP —I 12582' I--"m< x XO TO L-80 BTC-M PBTD H 12623' 1�������4���1������ � 7"CSG,264.L-80 BTC-M, .0383 bpf, ID=6.276" H 12710' DATE REV BY COMMENTS DATE REV BY COMMENTS ORION UNIT 06/19/11 D-14 ORIGINAL COMPLETION WELL: W-221 06/28/11 PJC DRLG DRAFT CORRECTIONS PERMIT No: 2110290 API No: 50-029-23444-00 SEC 21,T11 N,R12E,301'FNL&1175'FEL BP Exploration(Alaska) SEC 16 `v� KT,' SEt 21 2 16 ��';�ogR 15 X41- -NI- -, a IpI • -_4.,4/4I PBU � r J z.„ WEST ENS NO.1 ' �W-2211 a P� N W-22ei 217/1 W PAD W-22311 1 - Si _ L�+ � W_202 2I "" W-2191 200 "-- AREA 24 �21 /2,2 23 MEM 22 21 + AS-BUILT CONDUCTOR KUPARUK 20 STATE 33 19 ■ EXISTING CONDUCTOR ,,„ NO.1 32 18 VICINITY MAP 30 16 3156 N.T.S. - 29 15 Ns 211 212 ����4 ‘``�F►1111111 '° is ii sl `�� P�E•.••o.gCgS///I 207 1. •ALASKA STATE PLANE COORDINATES ARE ZONE 4, NAD27. •� '` • ::3;f_ �� 1 `� 2. BASIS OF LOCATION IS W PAD MONUMENTS W-1 &W-2. � CD:* �1 i 9 0 N, SCA 3. BASIS OF ELEVATION IS W PAD MONUMENT W-1. =* 49 Ifi ,\ •� ELEVATIONS ARE BP MEAN SEA LEVEL DATUM. . • Z 209 4. GEODETIC POSITIONS ARE NAD27. j j 2 5. PAD MEAN SCALE FACTOR IS 0.99991420. 40. 34 • 3 6. DATES OF SURVEY: AUGUST 23 & 24, 2010. j • • 35 4 7. REFERENCE FIELD BOOK: NS10-46 PGS. 51-62, 65-66. o• Richard F. Allison j 7 36 410 36 5 �s• 10608 �i� ��p,� o illb 39 8 ///f11j'`'ESS[`gr►►�`, � 400 10 445 12 SURVEYOR'S CERTIFICATE 44 205 GRAPHIC SCALE I HEREBY CERTIFY THAT I AM 203 0 150 300 600 PROPERLY REGISTERED AND LICENSED TO PRACTICE LAND SURVEYING IN 1 I THE STATE OF ALASKA AND THAT I ) ( IN FEET ) THIS AS-BUILT REPRESENTS A SURVEY 1 inch = 300 ft. MADE AERBY ME OR ON AND UNDERALL MY DIRECT , - ARE \ \, CCORRECTMENSIONS AS OF AGUSTAND OTHER0ETAILS 24, 2010.1 W-PAD LOCATED WITHIN PROTRACTED SECTION 21, T. 11 N., R. 12 E., UMIAT MERIDIAN, ALASKA WELL A.S.P. PLANT GEODETIC GEODETIC CELLAR SECTION NO. COORDINATES COORDINATES POSITION(DMS) POSITION(D.DD) BOX ELEV. OFFSETS Y= 5,959,820.61 N= 2,626.66 70'17'57.027" 70.2991742' 4,844' FSL W-202 X= 612,049.08 E= 2,130.09 149'05'33.134" 149.0925372' 52.8' 1,177' FEL W-2191 Y=5,959,787.60 N= 2,593.65 70'17'56.703" 70.2990842' 52 1' 4,811' FSL X= 612,048.95 E= 2,129.96 149'05'33.152" 149.0925422' 1,178' FEL W-2201 Y=5,959,910.74 N=2,716.800 70'17'57.914" 70.2994206' 53.4• 4,934' FSL X= 612,048.91 E= 2,129.93 149'05'33.100 149.0925278' 1,175' FEL W-2211 Y=5,959,955.90 N= 2,761.97 70'17'58.358" 70.2995439' 53.5' 4,979' FSL X= 612,048.98 E= 2,130.00 149'05'33.078" 149.0925217' 1,175' FEL W-2231 Y=5,959,895.67 N= 2,701.73 70'17'57.766" 70.2993794' 53.3' 4,919' FSL X= 612,048.92 E= 2,129.93 149'05'33.106" 149.0925294' 1,175' FEL DRAWN: F. Robert „ BARNHART �ti4i�'l /!=� y CHECKED: vivo�1/�% H� SPRINGBERG ID I (I�1j! rLI+I'1��I DATE: 8/25/10 ""'.l�'� DRAWING: FR810 WOW 06 SHEET: JOB No: WOA W-PAD 1 assocSS . AS-BUILT CONDUCTOR LOCATION 08 8/25/10 ISSUED FOR INFORMATION TFB CSS om+s vi SCALE: 1 OF 1 1• - 30e' WELLS: 202, 2191, 2201, 221i and 2231 NO. DATE REVISION BY CHK C K..n• uuq! BP AMERICA Leak-Off Test Summary Well Name: W-221 Surface Leak Off Test Test Test Depth Test Depth AMW Pressure Pressure EMW Date Type (TMD-Ft) (TVD-Ft) (ppg) (psi) (BHP) (psi) (ppg) , 05/29/11 LOT 2,415.00 2,058.00 9.00 420.00 1,382.20 12.93° 06/05/11 LOT 7,948.00 3,591.00 9.00 950.00 2,628.90 14.09 : Page 1 of 1 North America-ALASKA-BP Page 1 of 24 Operation Summary Report Common Well Name:W-221 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 5/22/2011 End Date: X3-00W91-C: (5,123,350.00) Project:Prudhoe Bay Site: PB W Pad Rig Name/No.: DOYON 14 Spud Date/Time:5/22/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 5/22/2011 04:30 - 07:00 2.50 MOB P PRE RIG PICKUP @ 04:30 ON 5/22/2011. PREP RIG TO MOVE FROM W-223 T/W-221. RD RIG FLOOR. REMOVE CHOKE LINE AND MUD LINE. RD BUCKET LINES, HYDRAULIC LINES, •GRATING,RIG FLOOR BRACES AND STACKS. SKID RIG FLOOR INTO MOVING POSITION. 07:00 - 09:00 2.00 MOB P PRE MOVE RIG OFF W-223 TO W-221. SPOT RIG OVER WELL AND SHIM TO LEVEL. INSTALL PIPESHED SHIM. INSTALL HANDRAILS AND BEGIN TO RIGUP. 09:00 - 13:00 4.00 MOB P PRE SKID RIG FLOOR INTO DRILLING POSITION AND PIN. GENERAL RIGUP OPERATIONS. RIG UP FLOOR,STEAM,WATER,AIR AND HYDRAULICS. SPOT ROCKWASHER. RIG ACCEPTED @ 12:00 ON 5/22/2011 FOR OPERATIONS. 13:00 - 16:00 • 3.00 BOPSUR P PRE INSTALL 20"HYDRIL BAG AND NU SURFACE STACK,RISER,FLOWLINE AND DIVERTER SYSTEM. INSPECT DERRICK AND TEST ALARMS. 16:00 - 18:30 2.50 RIGU P PRE •LOAD AND STRAP 5"DRILLPIPE IN PIPESHED. •LOAD BHA IN SHED. BEGIN TO BRING ON FLUIDS TO PITS. 18:30 - 23:30 5.00 RIGU P PRE HELD PRE-JOB SAFETY MEETING FOR PICKING UP PIPE AND BHA. PU 26 STANDS OF 5", 19.5#, NC50,S-135 1X1 AND RACK BACK IN DERRICK. PU AND RACK BACK 5 STANDS 5"HEVI-WATE PIPE. LAYOUT BHA COMPONENTS ON RIG FLOOR. RIG CREWS HELD FIRE DRILL AND TABLETOP DIVERTER D3 DRILL. 23:30 - 00:00 0.50 RIGU P PRE HELD PJSM WITH HALLIBURTON AND GYRODATA. BEGIN RIGGING UP WIRELINE SHEAVE FOR GYRO SURVEY TRUCK. 5/23/2011 00:00 - 00:30 0.50 RIGU P PRE CONTINUE TO RIGUP WIRELINE SHEAVE AND GYRO TRUCK. 00:30 - 01:00 0.50 RIGU P PRE INSPECT DERRICK, BLOCKS AND DRAWWORKS. 01:00 - 02:30 1.50 BOPSUR P PRE CONDUCTED DIVERTER DRILL(D3): KNIFE VALVE OPENING TIME=2 SEC. 21 1/4" ANNULAR PREVENTER CLOSING TIME=29 SEC. CONDUCTED ACCUMULATOR TEST: INITIAL SYSTEM PRESSURE=2950 PSI. 42 SEC TO REGAIN 200 PSI ON ACCUMULATOR AND 2:54 TO REGAIN FULL PRESSURE. 4 N2 BOTTLES WITH AVERAGE 2150 PSI. COMPLETED PRE-SPUD CHECKLIST WITH RIG CREWS. DRILL,TEST AND CHECKLIST WITNESSED BY RYAN CADENHEAD WSL AND TOOL PUSHER MIKE SMITH. Printed 7/5/2011 9:26:22AM ,rth America-ALASKA-BP Page 2 of 24 Operation Summary Report Common Well Name:W-221 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 5/22/2011 End Date: X3-00W91-C:(5,123,350.00) Project: Prudhoe Bay Site:PB W Pad Rig Name/No.: DOYON 14 Spud Date/Time: 5/22/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 02:30 04:30 2.00 RIGU P PRE MAKEUP 16"DIRECTIONAL BHA#1 AND RIH. -16"MX-1 HUGHES BIT,SERIAL#5192202 W/ 3X20&1X16 NOZZLES,TFA=1.117 -MOTOR WITH 2.12 BEND -NON MAG UBHO SUB -NON MAG PONY COLLAR -NON MAG IBS NON MAG BOTTLENECK CROSS OVER -5"HWDP 04:30 - 06:00 1.50 RIGU P PRE FILL RISER,MUD LINES AND FLOW LINE. CHECK FOR LEAKS IN SYSTEM. PERFORM DIVERTER DRILL AND RIG EVACUATION DRILL WITH RIG CREWS AND BP WELL CONTROL AUDITOR BRUCE LYNCH. HELD AAR TO DISCUSS RESULTS. 06:00 - 07:30 1.50 RIGU N RREP PRE REPLACE THE BELTS ON THE#1 CONVEYOR ALONG WITH 1 IDLER ROLLER AND 2 BEARINGS. 07:30 - 12:00 4.50 DRILL P SURF BEGIN DRILLING FROM 103'TO 333'. UP WT. 70K/DOWN WT.72K PUMPING AT 500 GPM WITH 350 PSI OFF/440 PSI ON. TQ OF 1K WITH 10-15K WOB. AST-2.16HRS/ART.53HRS. 12:00 - 12:30 0.50 DRILL P SURF PULL OUT OF THE HOLE ON ELEVATORS AND STAND BACK THE HWDP. 12:30 - 13:30 1.00 r DRILL P SURF LAY DOWN THE CROSS OVER AND UBHO SUB. ADJUST THE MOTOR TO 1.83 DEGREE BEND AND VERIFY CONDITION OF THE BIT, GOOD. 13:30 - 16:00 2.50 DRILL P SURF MAKE UP BHA#2 AS FOLLOWS: -16"MX-1 HUGHES BIT,SERIAL#5192202 W/ 3X20&1X16 NOZZLES,TFA=1.117 -MOTOR WITH 1.83 BEND -NON MAG PONY COLLAR -NON MAG IBS 16" -MWD -NON MAG UBHO -NON MAG IBS 16" -NON MAG BOTTLENECK CROSS OVER -NON MAG DRILL COLLARS(2) -NON MAG IBS 8.75" -NON MAG DRILL COLLAR -FLOAT SUB -5"HWDP -6.5"HYDRAULIC JARS -5"HWDP 16:00 - 17:00 1.00 DRILL P SURF RUN IN THE HOLE AND TAG UP 15'HIGH ON FILL,WASH DOWN TO 333'AT 500 GPM WITH 440 PSI. 17:00 - 00:00 7.00 DRILL P SURF DRILL AHEAD FROM 333'-652'AT 500 GPM WITH 620 PSI OFF/800 PSI ON. UP WT. 90K/ DOWN WT.87K WTIH 3-5K TQ AND 20-30K WOB. -AST 3.56 HRS/ART 0/ADT 3.56 HRS -JENNINGS CREW HELD A SPILL DRILL,CRT 105 SEC. Printed 7/5/2011 9:26:22AM 'orth America-ALASKA- BP Page 3 of 24 Operation Summary Report Common Well Name:W-221 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 5/22/2011 End Date: X3-00W91-C: (5,123,350.00) Project: Prudhoe Bay Site: PB W Pad Rig Name/No.: DOYON 14 Spud Date/Time:5/22/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 5/24/2011 00:00 - 12:00 12.00 DRILL P SURF DIRECTIONALLY DRILL AHEAD FROM 652'TO 1,230'MD -PUW 112K,SOW 93K ROT 102K -600 GPM,860 PSI OFF,1,030 PSI ON -40 RPM,TQ 8K ON,5K OFF -35K WOB -MUD WT IN:8.9 PPG,MUD WT OUT:9.0 PPG CLEAN MWD SURVEYS AFTER 844' RIG DOWN GYRO EQUIPMENT AFTER CLEAN MWD SURVEYS ART 0.93,AST:7.42,ADT:8.35 HELD SPILL DRILL 12:00 - 00:00 12.00 DRILL P SURF DIRECTIONALLY DRILL AHEAD FROM 1,230' TO 1,792'MD PUW 115K,SOW 90K ROT 103K -600 GPM,930 PSI OFF,1,190 PSI ON -40 RPM,TQ 8K ON,4K OFF -35K WOB MUD WT IN:9.2 PPG,MUD WT OUT:9.3 PPG ART:0.73,AST:7.68,ADT:8.41 ADT FOR LAST 24 HRS: 16.76 HELD RIG FIRE DRILL 5/25/2011 00:00 - 12:00 12.00 DRILL P SURF DIRECTIONALLY DRILL AHEAD FROM 1,792' TO 2,263'MD -PUW 123K,SOW 87K ROT 103K -600 GPM,960 PSI OFF,1,110 PSI ON -40 RPM,TQ 8K ON,5K OFF -35K WOB -MUD WT IN AND OUT:9.1 PPG ART: 1.09,AST 6.57,ADT:7.66 12:00 13:00 1.00 DRILL P SURF DIRECTIONALLY DRILL AHEAD FROM 2,263' TO 2.425'MD -PUW 120K,SOW 90K ROT 105K -600 GPM,980 PSI OFF,1,180 PSI ON -40 RPM, TQ 10K ON,5K OFF -30K WOB -MUD WT IN AND OUT:9.1 PPG ART:0.23,AST 0.82,ADT: 1.05 TD CALLED BY RIG GEOLOGIST AT 2,425'MD 13:00 - 14:00 1.00 DRILL P SURF CIRCULATE BOTTOMS-UP -ROTATE AND RECIPROCATE DRILLSTRING -800 GPM,1,630 PSI -80 RPM,TQ 8K -MUD WT IN AND OUT:9.1 PPG 14:00 - 17:30 3.50 DRILL P SURF FLOW CHECK WELL -NO FLOW BACKREAM OUT OF HOLE FROM 2,425'TO BHA AT 650'MD -800 GPM,1,600 PSI -80 RPM, TQ 8K -MUD WT IN AND OUT:9.2 PPG Printed 7/5/2011 9:26:22AM '"rth America -ALASKA- BP Page 4 of 24 Operation Summary Report Common Well Name:W-221 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 5/22/2011 End Date: X3-00W91-C: (5,123,350.00) Project: Prudhoe Bay Site: PB W Pad Rig Name/No.: DOYON 14 Spud Date/Time: 5/22/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations 7 (hr) (ft) 17:30 - 18:00 0.50 DRILL P SURF FLOW CHECK WELL -NO FLOW !RIH FROM 650'TO 1,332'MD TAG OBSTRUCTION AT 1,332'MD -TOP OF SV6: 1,336'MD 18:00 - 20:00 2.00 DRILL P SURF WORK PAST OBSTRUCTION AT 1,332'MD 20:00 - 20:30 0.50 ! DRILL P SURF WASH DOWN FROM 1,414'TO 1,509'MD -300 GPM,370 PSI RIH ON ELEVATORS FROM 1,509'MD TO TD AT 2,425'MD .-STACK OUT 5K TO CONFIRM TD TAG 20:30 - 23:00 2.50 DRILL P SURF CIRCULATE 3 BOTTOMS-UP AT TD -ROTATE AND RECIPROCATE DRILLSTRING : -600 GPM,1,060 PSI -40 RPM, TQ 8K -MUD WT IN AND OUT:9.1 PPG -FLOW RATE LIMITED DUE TO MUD VISCOSITY AT SURFACE 23:00 - 00:00 1.00 DRILL P SURF FLOW CHECK WELL -NO FLOW BACKREAM OUT OF HOLE FROM 2,425'TO 1,792'MD -600 GPM,980 PSI , -80 RPM,TQ 8K MUD WT IN AND OUT:9.2 PPG 5/26/2011 00:00 - 02:30 1 2.50 DRILL P SURF CONTINUE TO BACKREAM OUT OF HOLE FROM 1,792'TO 490'MD • • -600 GPM,980 PSI -80 RPM, TQ 8K FLOW CHECK WELL WITH BHA BELOW DIVERTER NO FLOW 02:30 - 03:00 0.50 DRILL P SURF PULL OUT OF HOLE ON ELEVATORS WITH BHA -RACK BACK HWDP AND NON-MAG DRILL COLLAR STANDS IN DERRICK 03:00 - 05:00 2.00 DRILL P SURF LAY DOWN BHA -CLEAN STABILIZERS AT RIG FLOOR -ALL STABILIZERS IN GAUGE -BREAK BIT AND LAY DOWN SAME BIT GRADE:5-5-WT-A-E-2-BU-TD 05:00 - 07:00 2.00 CASING P SURF LD SHORT BHA COMPONENTS DOWN BEAVER SLIDE CLEAN AND CLEAR RIG FLOOR 07:00 - 08:30 1.50 CASING P SURF MOBILIZE CASING RUNNING EQUIPMENT TO RIG FLOOR RIG UP TESCO TOOLS PICK UP LANDING JOINT WITH HANGER AND PERFORM DUMMY RUN -MARK LANDING JOINT WHEN HANGER ON LANDING RING Printed 7/5/2011 9:26:22AM -'3rth America -ALASKA- BP Page 5 of 24 Operation Summary Report Common Well Name:W-221 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 5/22/2011 End Date: X3-00W91-C: (5,123,350.00) Project: Prudhoe Bay Site: PB W Pad Rig Name/No.: DOYON 14 Spud Date/Time: 5/22/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 08:30 - 14:30 6.00 CASING P SURF HOLD PJSM WITH RIG CREW AND TESCO CREW MAKE UP 13-3/8"SHOETRACK AS FOLLOWS: -FLOAT SHOE -2 JOINTS 13-3/8"68#L-80 BTC CASING -FLOAT COLLAR -1 JOINT 13-3/8"68#L-80 BTC CASING CHECK FLOATS -FLOATS HOLDING RUN 13-3/8"CASING TO 2,415'MD FILL PIPE EVERY JOINT -BREAK CIRCULATION EVERY 10 JOINTS PICK UP LANDING JOINT/CASING HANGER LAND CASING ON LANDING RING -FLOAT SHOE AT 2,415'MD 14:30 - 16:00 1.50 CASING P r SURF CIRCULATE AND CONDITION MUD FOR CEMENT JOB -RECIPROCATE CASING STRING 20' STROKES , I STAGE UP RATE TO 7 BPM,270 PSI 16:00 - 17:00 1.00 1 CEMT P SURF RIG DOWN TESCO CASING RUNNING TOOLS RIG UP 350 TON ELEVATORS AND LONG BALES TO TOP DRIVE MAKE UP CEMENT HEAD CROSSOVER AND �- CEMENT HEAD TO LANDING JOINT 17:00 - 20:00 3.00 CEMT P SURF CIRCULATE AND CONDITION MUD FOR CEMENT JOB I-RECIPROCATE CASING STRING 20' �, STROKES ' -7 BPM,320 PSI Printed 7/5/2011 9:26:22AM firth America-ALASKA- BP Page 6 of 24 Operation Summary Report Common Well Name:W-221 AFE No Event Type: DRL-ONSHORE(DON) Start Date:5/22/2011 End Date: X3-00W91-C: (5,123,350.00) Project:Prudhoe Bay Site: PB W Pad Rig Name/No.: DOYON 14 Spud Date/Time: 5/22/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) 20:00 00:00 4.00 CEMT P (ft) SURF DEMENT 13-3/8"SURFACE CASING WITH r� RECIPROCATION AS FOLLOWS: 19:10 HOLD PRE-JOB SAFETY MEETING WITH CI-' RIG CREW,SCHLUMBERGER CEMENT CREW AND CH2M HILL TRUCK DRIVERS 19:38 BATCH MIX 10.0 PPG MUD PUSH II 19:49 PUMP 100 BBLS TREATED DRILLPLEX MUD 20:12 PUMP 5 BBLS MUD PUSH II 20:17 TEST TRIPS TO 700 PSI-GOOD.TEST LINES TO 3,000 PSI-GOOD 20:22 PUMP 95 BBLS 10.0 PPG MU()PUSH II AT 6 BPM,350 PSI 20:40 START BATCH MIXING ASL LEAD CEMENT 20:43 DROP BOTTOM PLUG.FLAG INDICATED PLUG DROPPED 20:44 PUMP 609.0 BBL 10.7 PPG ASL LEAD AWAY AT 5.9 BPM -10.7 PPG ARCTIC SET LIGHT -5.9 BPM,350 PSI TREATING PRESSURE 21:47 LAND CASING ON LANDING RING BEFORE LEAD CEMENT ROUNDS SHOE 21:50 BOTTOM PLUG LANDED ON FLOAT COLLAR.PRESSURE SPIKE TO 670 PSI OBSERVED BEFORE RETURNING TO TREATING PRESSURE 22:32 START BATCH MIXING 15.8 PPG G CEMENT 22:35 TAIL CEMENT TO WEIGHT 22:36 SWAP TO TAIL CEMENT PUMP 288.9 BBLS 15.8 PPG CLASS G TAIL CEMENT AWAY AT 5.7 BPM -15.8 PPG CLASS G NEAT -5.7 BPM,805 PSI TREATING PRESSURE 23:41 STOP PUMPING CEMENT 23:43 DROP TOP PLUG FLAG INDICATED PLUG DROPPED 23:43 SLB CEMENTERS PUMP 10 BBLS TO CLEAN UP ON TOP OF PLUG 23:46 BEGIN DISPLACEMENT WITH RIG PUMP -DISPLACE WITH 9.2 PPG DRILLPLEX -PUMP 8 BPM,150 PSI -CONTINUE DISPLACEMENT ON 05/27/2011 REPORT Printed 7/5/2011 9:26:22AM rth America-ALASKA- BP Page 7 of 24 Operation Summary Report Common Well Name:W-221 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 5/22/2011 End Date: X3-00W91-C:(5,123,350.00) Project:Prudhoe Bay Site:PB W Pad Rig Name/No.: DOYON 14 Spud Date/Time: 5/22/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 5/27/2011 00:00 - 01:30 1.50 CEMT P SURF CONTINUE 13-3/8"SURFACE CASING CEMENT DISPLACEMENT 00:05 CAUGHT CEMENT 1,250 STROKES INTO DISPLACEMENT 00:07 SLOW DISPLACEMENT RATE TO 6 BPM, 370 PSI -CLOSE TO CAPACITY OF CONVEYOR IN PITS 00:16 CEMENT CONTAMINATED MUD TO SURFACE 1,940 STROKES INTO DISPLACEMENT 00:17 LEAD CEMENT CONFIRMED AT SURFACE 2,000 STROKES INTO DISPLACEMENT FLUID WEIGHT OUT: 10.7 PPG 00:38 SLOW PUMP RATE TO 4.0 BPM AFTER 3,200 STROKES -520 PSI DISPLACEMENT PRESSURE PRIOR TO DROPPING RATE 00:41 SLOW PUMP RATE TO 2.0 BPM AT 3,300 STROKES -480 PSI DISPLACEMENT PRESSURE PRIOR TO DROPPING RATE 00:42 PLUG BUMP AT 3,348 STROKES PLUG BUMPED WITH 1,000 PSI 00:46 BLEED OFF PRESSURE AND CHECK FLOATS -FLOATS HOLDING 01:06 HOOK UP CEMENT LINE AND PRESSURE TEST CASING TO 3,000 PSI FOR 5 MINUTES -GOOD TEST 01:22 BLEED PRESSURE TO 0 PSI - T IN PLACE AT 00:42 :S (CEMENT PUMPED: 1,396 SX OF 10.7 PPG ASL LEAD AT 2.45 CUFT/SK -1,398 SX OF 15.8 PPG CLASS G TAIL AT 1.16 CUFT/SK -130 BBLS 10.7 PPG ASL LEAD RECOVERED nTS - - - 01:30 - 03:00 1.50 CEMT P SURF RIG DOWN CEMENT LINE AND CEMENT HEAD FLUSH STACK BACK OUT LANDING JOINT AND LAY DOWN ON PIPE SKATE REMOVE ELEVATORS AND LONG BALES FLUSH OUT FLOWLINE 03:00 - 05:30 2.50 CEMT P SURF CLEAN AND CLEAR RIG FLOOR OF CEMENTING EQUIPMENT CLEAN CEMENT VALVES, DRIP PAN, MUD PITS AND ROCKWASHER BLOW DOWN INJECTION LINE 05:30 - 07:00 1.50 CEMT P SURF SLIP AND CUT DRILLING LINE SERVICE TOP DRIVE AND TRAVELLING BLOCKS 07:00 - 09:00 2.00 DIVRTR P SURF NIPPLE DOWN DIVERTER SYSTEM AND REMOVE FROM CELLAR 09:00 - 10:30 1.50 WHSUR P SURF NIPPLE UP FMC WELLHEAD Printed 7/5/2011 9:26:22AM rth America-ALASKA-BP Page 8 of 24 Operation Summary Report Common Well Name:W-221 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 5/22/2011 End Date: X3-00W91-C: (5,123,350.00) Project:Prudhoe Bay Site:PB W Pad Rig Name/No.: DOYON 14 Spud Date/Time:5/22/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 10:30 15:00 4.50 BOPSUR P SURF NIPPLE UP BOP STACK AND RISER INSTALL HOLE FILL AND BLEED OFF LINES INSTALL DOUBLE VALVES ON UPPER AND LOWER ANNULUS VALVES 15:00 - 15:30 0.50 BOPSUR P SURF MOBILIZE TEST PLUG,RUNNING TOOL,AND WEAR RING TO RIG FLOOR 15:30 - 17:00 1.50 BOPSUR P SURF INSTALL TEST PLUG RIG UP TO TEST BOP EQUIPMENT HELD D2 KICK WHILE DRILLING DRILL 17:00 - 18:30 1.50 BOPSUR P SURF TEST BOP EQUIPMENT PER AO(C=C/RP- REGULATIONS —TEST ANNULAR WITH 5"TEST JOINT -250 PSI LOW,3,500 PSI HIGH ANNULAR TEST -250 PSI LOW,4,000 PSI HIGH ALL OTHER TESTS -5 MINUTES EACH TEST -CHART EACH TEST TEST 3-1/2"X 6"VBR,CHOKE VALVES 1,12,13,14, IBOP, HCR KILL VALVE --FLUID LEAKING BY 3-1/2"X 6"VBR 18:30 - 21:00 2.50 BOPSUR N RREP SURF CHANGE UPPER RAMS FROM 3-1/2"X 6"VBR ( TO 5"FIXED 21:00 00:00 3.00 BOPSUR P SURF CONTINUE TESTING BOP EQUIPMENT PER /( AOGCC/BP REGULATIONS -250 PSI LOW,4,000 PSI HIGH -5 MINUTES EACH TEST -CHART EACH TEST AS FOLLOWS: --5"FIXED RAM, CHOKE VALVES 1,12,13,14, IBOP,HCR KILL VALVE --CHOKE VALVES 9,11, MANUAL IBOP --CHOKE VALVES 5,8,10,4-1/2"IF DART VALVE --CHOKE VALVES 4,6,7,4-1/2"IF FOSV 5/28/2011 00:00 - 04:30 4.50 BOPSUR P SURF CONTINUE TESTING BOP EQUIPMENT PER AOGCC/BP REGULATIONS -250 PSI LOW,4,000 PSI HIGH -5 MINUTES EACH TEST -CHART EACH TEST AS FOLLOWS: --CHOKE VALVE 2. NOT TESTING GREASE VALVE AND ATTEMPT AGAIN WITHOUT SUCCESS --CHOKE HCR --MANUAL CHOKE AND MANUAL KILL VALVES --2-7/8"X 5"VBR --BLIND/SHEAR RAMS,CHOKE VALVE#3, MANUAL KILL VALVE IN PITS. FLUID LEAKING BY BLIND/SHEAR RAMS. FUNCTION RAMS MULTIPLE TIMES AND RE-TEST WITHOUT SUCCESS 04:30 - 08:00 3.50 BOPSUR N RREP SURF CHANGE BLIND/SHEAR RAMS SIM-OPS WHILE CHANGING RAMS: REBUILD CHOKE MANIFOLD VALVE#2 Printed 7/5/2011 9:26:22AM th America-ALASKA- BP Page 9 of 24 Operation Summary Report Common Well Name:W-221 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 5/22/2011 End Date: X3-00W91-C: (5,123,350.00) Project: Prudhoe Bay Site:PB W Pad Rig Name/No.:DOYON 14 Spud Date/Time: 5/22/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft)_ 08:00 - 12:00 4.00 BOPSUR P SURF FINISH TESTING BOP EQUIPMENT PER AOGCC/BP REGULATIONS -250 PSI LOW,4,000 PSI HIGH -5 MINUTES EACH TEST -CHART EACH TEST AS FOLLOWS: --BLIND/SHEAR RAMS,CHOKE VALVE#3, MANUAL KILL VALVE IN PITS(#20). --CHOKE VALVE 2. --4"XT-39 FOSV --4"XT-39 DART VALVE -TESTS WITNESSED BY DOYON TOOLPUSHERS HARRY GOCHENAUER AND NICK MARMON;BP WSL FRANK ROACH AND JOEY LEBLANC AOGCC INSPECTOR BOB NOBLE WAIVED WITNESS OF TEST 12:00 - 12:30 0.50 BOPSUR P SURF RIG DOWN BOP TEST EQUIPMENT BLOW DOWN LINES PULL TEST PLUG FROM WELLHEAD 12:30 - 13:00 0.50 WHSUR P SURF INSTALL WEAR RING IN WELLHEAD 13:00 - 15:30 2.50 CEMT P SURF HANG BALES AND ELEVATORS MAKE UP MULESHOE AND CROSSOVER TO 4-1/2"IF THREAD RIH ON DRILLPIPE FROM PIPE SHED TO 2,075'MD 15:30 - 16:00 0.50 CEMT P SURF CIRCULATE 3 PIPE VOLUMES TO CLEAN DRILLPIPE -9 BPM,125 PSI -9.0 PPG MUD WT IN AND OUT 16:00 - 17:30 1.50 CEMT P SURF POOH,RACKING BACK DRILLPIPE IN DERRICK 17:30 - 18:30 1.00 CEMT P SURF RIH ON DRILLPIPE FROM PIPE SHED TO 1,320'MD 18:30 - 19:00 0.50 CEMT P SURF CIRCULATE 1.5 PIPE VOLUMES TO CLEAN DRILLPIPE -8 BPM,110 PSI -9.0 PPG MUD WT IN AND OUT HELD D1 KICK WHILE TRIPPING DRILL 19:00 - 20:00 1.00 CEMT P SURF POOH, RACKING BACK DRILLPIPE IN DERRICK 20:00 - 20:30 0.50 CEMT P SURF MOBILIZE BHA COMPONENTS TO RIG FLOOR Printed 7/5/2011 9:26:22AM 'th America-ALASKA- BP Page 10 of 24 Operation Summary Report Common Well Name:W-221 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 5/22/2011 End Date: X3-00W91-C: (5,123,350.00) Project:Prudhoe Bay Site:PB W Pad Rig Name/No.: DOYON 14 Spud Date/Time:5/22/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 20:30 - 23:30 3.00 CEMT P SURF MAKE UP BHA#3(12-1/4"INTFRMMIATF BHA)PER SCHLUMBERGER AS FOLLOWS -12-1/4"HUGHES VM-3 TRICONE BIT 3X18 AND 1X16 JETS -SCHLUMBERGER 9-5/8"3-4 LOBE 4.5 STG MUD MOTOR W/1.50 DEGREE BEND --PORTED FLOAT IN TOP OF MOTOR NON-MAG PONY COLLAR -12-1/8"NON-MAG STABILIZER -MWD SUITE 12-1/8"NON-MAG STABILIZER 6-5/8"REG PIN X 4-1/2"IF BOX BOTTLENECK CROSSOVER -2X 6-3/4"NON-MAG DRILL COLLARS -8-3/4"NON-MAG STABILIZER -6-3/4"NON-MAG DRILL COLLAR -1 JT5"X3"HWDP -6-1/2"SMITH HYDRO JARS 13 JTS 5"X 3"HWDP TOTAL BHA LENGTH:646.96' 23:30 - 00:00 0.50 CEMT P SURF RIH FROM 645'TO 1,056'MD -PICK UP SINGLES FROM PIPE SHED 5/29/2011 00:00 - 01:00 1.00 CEMT P SURF CONTINUE TO SINGLE IN WITH BHA#3 FROM 1,056'TO2,062'MD 01:00 - 02:30 1.50 CEMT P SURF CIRCULATE SURFACE TO SURFACE -255 GPM,220 PSI 8.9 PPG MUD WT IN AND OUT 02:30 - 03:00 0.50 CASING P SURF RIG UP TO PRESSURE TEST CASING 03:00 - 04:00 1.00 CASING P SURF RIG UP AND PERFORM CASING PRESSURE TEST -250 PSI LOW FOR 5 MINUTES -3,500 PSI HIGH FOR 30 MINUTES -BOTH TEST CHARTED -PUMPED 5.0 BBLS TO ACHIEVE TEST PRESSURE -20 PSI LOST IN FIRST 15 MINUTES -0 PSI LOST IN SECOND 15 MINUTES -BLED BACK 5.0 BBLS. --GOOD TEST. RIG DOWN CASING TEST EQUIPMENT SIM-OPS DURING RIG DOWN: SERVICE TOP DRIVE 04:00 - 05:00 1.00 CEMT P SURF RIH ON DRILLPIPE FROM 2,062'TO 2,252'MD WASH DOWN FROM 2,252' -210 GPM,150 PSI TAG HARD CEMENT AT 2,311'MD -STACKED OUT 12K OBTAIN SLOW PUMP RATES Printed 7/5/2011 9:26:22AM ,rth America-ALASKA- BP Page 11 of 24 Operation Summary Report Common Well Name:W-221 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 5/22/2011 End Date: X3-00W91-C:(5,123,350.00) Project:Prudhoe Bay Site: PB W Pad Rig Name/No.: DOYON 14 Spud Date/Time:5/22/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 05:00 - 11:00 6.00 CEMT P SURF DRILL OUT CEMENT PLUGS AND SHOETRACK FROM 2,311'TO 2,415'MD -400 GPM,500 PSI -50 RPM,TQ 6K -TAG PLUGS AT 2,327'MD DRILL OUT RATHOLE FROM 2,415 TO 2,425' MD DRILL NEW HOLE FROM 2,425 TO 2,445'MD HELD UNANNOUNCED D2 KICK WHILE DRILLING DRILL -AAR AFTER DRILL 11:00 - 12:00 1.00 CEMT P SURF POOH FROM 2,445'TO 2,407'MD RIG UP TO DISPLACE WELL TO LSND MUD 12:00 - 13:30 1.50 CEMT P SURF DISPLACE WELL FROM DRILLPLEX MUD TO 9.0 PPG LSND -252 GPM,230 PSI 13:30 - 14:30 1.00 CEMT P SURF RIG UP AND PERFORM LOT -9.0PPG LSND MUD -TVD 2,058' -PRESSURE BREAK OVER AT 420 PSI �C EMW OF 12.92 PPG S./-" -2.5 BBLS PUMPED TO ACHIEVE LEAKOFF C5`1 -1.5 BBLS BLED BACK C7 DETERMINED BY WSL JOEY LEBLANC,BP ENGINEER WILSON QUINTA, BP SR ENGINEER KEN ALLEN,AND ACTING BP WTL ALAN MADSEN. 14:30 - 16:00 1.50 CEMT r P SURF CIRCULATE AND CONDITION MUD WHILE WAITING ON AUTHORIZATION TO PROCEED -300 GPM,300 PSI 16:00 - 16:30 0.50 CEMT P SURF BLOW DOWN CHOKE MANIFOLD,CHOKE AND KILL LINES 16:30 - 00:00 7.50 DRILL P INTI DIRECTIONALLY DRILL AHEAD FROM 2,445' TO 3,289'MD -PUW 124K,SOW 88K,ROT 103K -605 GPM,860 PSI OFF,930 PSI ON -60 RPM,TQ 6K OFF,8K ON -WOB 15K -9.2 PPG MUD WT IN AND OUT ART 1.30,AST 2.55,ADT 3.85 ADT FOR LAST 24 HRS: 3.85 5/30/2011 00:00 - 03:30 3.50 DRILL P INTI DIRECTIONALLY DRILL AHEAD FROM 3,289' TO 3,849'MD -PUW 115K,SOW 90K, ROT 106K -700 GPM,1,220 PSI OFF,1,420 PSI ON -100 RPM,TO 7K OFF,9K ON -WOB 25K -9.2 PPG MUD WT IN AND OUT 03:30 - 04:30 1.00 DRILL N RREP 3,849.00 INTI ROD WASH PUMP FAILURE ON PUMP#2 SLOW PUMP RATE -422 GPM,520 PSI -20 RPM,TQ 5K REPAIR ROD WASH PUMP REPLACE 1 SWAB AND LINER ON PUMP#2 Printed 7/5/2011 9:26:22AM rth America-ALASKA- BP Page 12 of 24 Operation Summary Report Common Well Name:W-221 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 5/22/2011 End Date: X3-00W91-C: (5,123,350.00) Project:Prudhoe Bay Site:PB W Pad Rig Name/No.: DOYON 14 Spud Date/Time:5/22/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 04:30 - 12:00 7.50 DRILL P INTI DIRECTIONALLY DRILL AHEAD FROM 3,849' TO 4,801'MD -PUW 130K,SOW 90K, ROT 110K -600 GPM,1,310 PSI OFF,1,440 PSI ON -60 RPM,TQ 7K OFF,8K ON -WOB 10K -9.4 PPG MUD WT IN,9.5 PPG MUD WT OUT ART 4.21,AST 1.51,ADT 5.72 HELD D2 KICK WHILE DRILLING DRILL 12:00 - 00:00 12.00 DRILL P INTI DIRECTIONALLY DRILL AHEAD FROM 4,801' TO 6,400'MD -HYDRATES OBSERVED AT TOP SV2,5,985' MD,3,052'TVD -PUW 150K,SOW 94K, ROT 114K -800 GPM,1,900 PSI OFF,2,170 PSI ON -140 RPM,TQ 10K OFF,13K ON -WOB35K -9.5 PPG MUD WT IN,9.7 PPG MUD WT OUT ART 4.10,AST 2.04,ADT 6.14 ADT FOR LAST 24 HRS: 11.86 HELD D2 KICK WHILE DRILLING DRILL 5/31/2011 00:00 - 12:00 12.00 DRILL P INTI DIRECTIONALLY DRILL AHEAD FROM 6,400' TO 7,618'MD -PUW 185K,SOW 90K, ROT 124K -800 GPM,1,870 PSI OFF,2,160 PSI ON • -120 RPM,TQ 13K OFF,14K ON -WOB 25K -9.3 PPG MUD WT IN,9.4 PPG MUD WT OUT ART 3.26,AST 2.34,ADT 5.60 HELD D2 KICK WHILE DRILLING DRILL 12:00 - 15:30 3.50 DRILL P INTI DIRECTIONALLY DRILL AHEAD FROM 7,618' TO 7.950'MD -PUW 190K,SOW 91K, ROT 124K 'C‘) -800 GPM,1,890 PSI OFF,2,120 PSI ON -120RPM,TQ15KOFF,15KON ` -WOB 25K -9.4 PPG MUD WT IN,9.4 PPG MUD WT OUT -TC1 C;AI I PD RY RIG SITE GEOI OGIST ART 0.71,AST 1.34,ADT 2.05 15:30 - 19:00 3.50 DRILL P INTI CIRCULATE 4 BOTTOMS-UP VOLUMES -ROTATE AND RECIPROCATE DRILLSTRING -20'STROKE TO KEEP BIT IN CLAYSTONE -800 GPM,1,880 PSI -120 RPM,TQ 15K -INCREASED CUTTINGS ACROSS SHAKERS AT FIRST BOTTOMS-UP --CLEANED UP AFTER BOTTOMS-UP -NO INCREASE IN CUTTINGS ACROSS SHAKERS SUBSEQUENT THREE BOTTOMS-UP -FINAL MUD WT IN AND OUT 9.3 PPG Printed 7/5/2011 9:26:22AM -th America ALASKA- BP Page 13 of 24 Operation Summary Report Common Well Name:W-221 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 5/22/2011 End Date: X3-00W91-C: (5,123,350.00) Project: Prudhoe Bay Site: PB W Pad Rig Name/No.: DOYON 14 Spud Date/Time: 5/22/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 19:00 - 00:00 5.00 DRILL P INTI FLOW-CHECK WELL -NO FLOW BACKREAM OUT FROM 7,950'TO 4,709'MD -800 GPM,1,900 PSI -140 RPM AT SURFACE,TQ 14K -INCREASE IN CUTTINGS AT BOTTOMS-UP STROKES 6/1/2011 00:00 - 03:30 3.50 DRILL P INTI BACKREAM OUT FROM 4,709'TO 2,345 MD 800 GPM,1,900 PSI -140 RPM AT SURFACE,TQ 14K -CLAY BALLS ENCOUNTERED AT SURFACE AT 3,195'BIT DEPTH -SLOW RPM TO 60 AS 12-1/8"STABILIZERS ENTER 13-3/8"SHOE -NO ROTATION AS 12-1/4"BIT ENTERS 13-3/8"SHOE 03:30 - 04:30 1.00 DRILL P INTI CIRCULATE AND CONDITION HOLE -3 BOTTOMS-UP VOLUMES -ROTATE AND RECIPROCATE DRILLSTRING -800 GPM,1,350 PSI -100 RPM,TQ 10-14K CLAY BALLS DURING FIRST BOTTOMS UP -SHAKERS CLEANED UP AFTER FIRST BOTTOMS-UP -9.5 PPG MUD WT IN AND OUT AT END OF CIRCULATION 04:30 - 05:30 1.00 DRILL P INTI SERVICE TOP DRIVE,DRAWWORKS AND CROWN CHANGE SHAKER SCREENS WHILE SERVICING RIG FLOW CHECK WELL -NO FLOW 05:30 - 08:30 3.00 DRILL P INTI RIH ON ELEVATORS FROM 2,345'TO 7,932' MD -FILL PIPE EVERY 20 STANDS -PICK UP SINGLE TO TAG TD AT 7,950'MD 08:30 - 11:30 3.00 DRILL P INTI CIRCULATE 3 BOTTOMS-UP VOLUMES -CIRCULATE HIGH VISCOSITY SWEEP SURFACE-TO-SURFACE --NO NOTICEABLE INCREASE IN CUTTINGS WITH SWEEP AT SURFACE -ROTATE AND RECIPROCATE DRILLSTRING -850 GPM,2,170 PSI -160 SURFACE RPM,TQ 13K -FINAL MUD WT IN AND OUT:9.4 PPG FLOW CHECK WELL -NO FLOW 11:30 - 15:00 3.50 DRILL P INTI OBTAIN SLOW PUMP RATES POOH FROM 7,950'TO 2,438'MD -SAW TIGHT SPOT AT 6,100'MD 15:00 - 15:30 0.50 DRILL P INTI FLOW CHECK WELL FOR 10 MINUTES -NO FLOW DROP 2.44"OD RABBIT WITH 110'TAIL 15:30 - 16:30 1.00 DRILL P INTI CONTINUE TO POOH FROM 2,438'TO 646'MD FLOW CHECK WELL WITH BHA BELOW STACK -NO FLOW 16:30 - 17:30 1.00 DRILL P INTI STAND BACK HWDP AND DRILL COLLARS IN DERRICK Printed 7/5/2011 9:26:22AM • Trth America-ALASKA- BP Page 14 of 24 Operation Summary Report Common Well Name:W-221 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 5/22/2011 End Date: X3-00W91-C: (5,123,350.00) Project: Prudhoe Bay Site:PB W Pad Rig Name/No.: DOYON 14 Spud Date/Time: 5/22/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 17:30 - 19:00 1.50 DRILL P INTI LAY DOWN 12-1/8"STABILIZERS AND MWD TOOL -STABILIZERS IN GAUGE DRAIN AND CLEAN MOTOR BREAK BIT AND LAY DOWN MUD MOTOR BIT GRADE:2-2-WT-A-E-1-BU-TD 19:00 - 21:00 2.00 CASING P INTI CLEAN AND CLEAR RIG FLOOR OF ALL BHA EQUIPMENT MOBILIZE LINER RUNNING TOOLS AND VOLANT CRT TO RIG FLOOR • SIM-OPS:CHANGE OUT UPPER 5"FIXED RAMS TO 9-5/8"FIXED RAMS 21:00 - 22:00 1.00 BOPSUR P INTI PULL WEAR RING AND INSTALL TEST PLUG TEST 9-5/8"RAMS WITH 9-5/8"TEST JOINT AND 5"FOSV -250 PSI LOW,4,000 PSI HIGH -5 MINUTES EACH TEST -CHART TEST 22:00 - 22:30 0.50 WHSUR P INTI PULL TEST PLUG AND INSTALL WEAR RING 22:30 - 00:00 1.50 CASING P INTI RIG LZP TO RUN 9-5/8"LINER 6/2/2011 00:00 - 01:00 1.00 CASING P INTI FINISH RIGGING UP TO RUN 9-5/8"LINER WITH VOLANT CRT HOLD PJSM WITH RIG CREW,VOLANT REP, BAKER COMPLETIONS TECH 01:00 - 03:00 2.00 CASING P INTI RUN 9-5/8"40#L-80 BTC LINER MAKE UP SHOETRACK AS FOLLOWS: -WARTHOG REAMER SHOE -1 JT 9-5/8"CASING WITH CENTRALIZER -HALLIBURTON FLOAT COLLAR -1 JT 9-5/8"CASING WITH CENTRALIZER -BAKER LANDING COLLAR -1 JT 9-5/8"CASING WITH CENTRALIZER BAKERLOK SHOETRACK CONNECTIONS MAKE UP 2 JOINTS 9-5/8"CASING AND CHECK FLOATS -FLOATS HOLDING 03:00 - 17:00 14.00 CASING P INTI RUN 9-5/8"40#L-80 BTC LINER TO 5,636'MD -RUN WITH VOLANT CRT -CENTRALIZERS FIRST 25 JOINTS INCLUDING SHOETRACK -FILL PIPE EVERY JOINT -BREAK CIRCULATION AND RECORD PICKUP/SLACKOFF WEIGHTS EVERY 10 JOINTS 17:00 - 18:30 1.50 CASING P INTI RIG DOWN VOLANT CRT AND LAY DOWN SAME LAY DOWN 9-5/8"HANDLING EQUIPMENT MAKE UP BAKER LINER HANGER ASSEMBLY -9-5/8"PUP JOINT -CROSSOVER PUP -FLEXLOCK II LINER HANGER -HRD-E ZXP LINER TOP PACKER WITH 11.41' TIEBACK RECEPTACLE -LINER RUNNING TOOL Printed 7/5/2011 9:26:22AM Irth America-ALASKA-BP Page 15 of 24 Operation Summary Report Common Well Name:W-221 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 5/22/2011 End Date: X3-00W91-C: (5,123,350.00) Project:Prudhoe Bay Site:PB W Pad Rig Name/No.: DOYON 14 Spud Date/Time:5/22/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 18:30 - 19:30 1.00 CASING P INTI MAKE UP FIRST STAND OF 5"DRILLPIPE TO LINER RUNNING TOOL BREAK CIRCULATION AT 3 BPM,120 PSI STAGE UP CIRCULATION RATE IN 1 BPM INCREMENTS CIRCULATE LINER VOLUME WHILE BAKER LINER REPS MIX PACKER FLUID •-12 BPM,300 PSI 19:30 - 23:00 3.50 CASING P INTI OBTAIN PICKUP,SLACKOFF AND ROTATING WEIGHTS WITH FIRST STAND OF 5" DRILLPIPE -MAX TOQUE 25K REACHED BEFORE ABLE TO ROTATE RIH ON 5"DRILLPIPE FROM 5,680'TO 6,907' MD -ENCOUNTER TIGHT SPOT AT 6,000'MD • -PICK UP AND CIRCULATE DOWN FROM 5,963'TO 6,625'MD --BREAK CIRCULATION AT 3 BPM,110 PSI --CIRCULATE DOWN AT 7 BPM,270 PSI SWITCH TO 5"HWDP AT 6,907'AND RIH ON 5" HWDP TO 7,272'MD -CIRCULTE DOWN LAST STAND WHILE RU TO RUN 8"DRILL COLLARS --BREAK CIRCULATION AT 3 BPM,110 PSI --CIRCULATE DOWN AT 7 BPM,310 PSI 23:00 - 00:00 1.00 CASING P INTI RIH FROM 7,272'MD TO 7,426'MD WITH 8" DRILL COLLARS FROM PIPE SHED 6/3/2011 00:00 - 01:00 1.00 CASING P INTI CONTINUE TO RIH WITH 8"DRILL COLLARS FROM PIPE SHED FROM 7,426'TO 7,733'MD 01:00 - 01:30 0.50 CASING P INTI INSTALL CROSSOVER FROM DRILL COLLARS TO DRILLPIPE AND 5'DRILLPIPE PUP RIH WITH 2 STANDS 5"DRILLPIPE FROM 7,733'TO 7,928'MD OBTAIN PICKUP AND SLACKOFF WEIGHTS PRIOR TO PICKING UP SINGLE JOINT AND ROTATING CEMENT HEAD -PUW 325K,SOW 135K --BROKE OVER AT 370K 01:30 - 02:30 1.00 CASING P INTI MAKE UP 10'DRILLPIPE PUP TO TOP OF ROTATING CEMENT HEAD MAKE UP ROTATING CEMENT HEAD TO SINGLE JOINT DRILLPIPE MAKE UP ASSEMBLY TO DRILLSTRING AND TORQUE UP WITH TOP DRIVE RIH AND TAG TD 24'IN ON SINGLE JOINT PICK UP TO NEUTRAL WEIGHT+2'AND MARK PIPE 02:30 - 05:00 2.50 CEMT P INTI FILL PIPE AND BREAK CIRCULATION -3 BPM,210 PSI STAGE UP PUMPS TO CIRCULATE AND CONDITION MUD FOR CEMENT JOB -FINAL RATE: 8 BPM,540 PSI -RECIPROCATE STRING 20'STROKES AFTER REACHING 6 BPM Printed 7/5/2011 9:26:22AM • ,rth America -ALASKA- BP Page 16 of 24 Operation Summary Report Common Well Name:W-221 AFE No Event Type: DRL-ONSHORE(DON) Start Date:5/22/2011 End Date: X3-00W91-C: (5,123,350.00) Project: Prudhoe Bay Site: PB W Pad Rig Name/No.: DOYON 14 Spud Date/Time:5/22/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 05:00 - 09:00 4.00 CEMT P INTI CEMENT 9-5/8"INTERMEDIATE LINER WITH ciAr RECIPROCATION AS FOLLOWS: 05:00 BATCH MIX 10.0 PPG MUD PUSH II 05:10 HOLD PRE-JOB SAFETY MEETING WITH RIG CREW,SCHLUMBERGER CEMENT CREW .-1` 1`• AND CH2M HILL TRUCK PUSHER 05:35 PUMP 5 BBLS MUD PUSH II •05:40 TEST TRIPS TO 1,600 PSI-GOOD.TEST LINES TO 4,500 PSI-GOOD 05:44 PUMP 49 BBLS 10.0 PPG MUD PUSH II AT 5 BPM,417 PSI 05:55 BATCH UP FIRST TUB LITECRETE LEAD CEMENT 05:58 TUB TO WEIGHT •05:59 PUMP 390.1 BBL 11.0 PPG LITECRETE LEAD AWAY AT 5.6 BPM -11.0 PPG LITECRETE 5.6 BPM,770 PSI TREATING PRESSURE 07:16 FINISHED WITH LEAD. BATCH FIRST TUB 15.8 PPG G CEMENT 07:18 TAIL CEMENT TO WEIGHT 07:19 SWAP TO TAIL CEMENT PUMP 92.3 BBLS 15.8 PPG CLASS 0 TAIL CEMENT AWAY AT 5.6 BPM 15.8 PPG CLASS G NEAT -5.6 BPM,960 PSI TREATING PRESSURE 07:25 PARK LINER ON DEPTH AS MUD PUSH EXITS SHOE 07:38 STOP PUMPING CEMENT 07:39 RELEASE DRILLPIPE DART FROM ROTATING CEMENT HEAD.POSITIVE INDICATION DRILLPIPE DART LEFT CEMENT HEAD.SLB CEMENTERS PUMP 10 BBLS TO CLEAN UP ON TOP OF PLUG 07:42 BEGIN DISPLACEMENT WITH RIG PUMP -DISPLACE WITH 9.6 PPG DRILLPLEX -PUMP 8 BPM,150 PSI -SLOW DOWN TO 2 BPM AS DRILLPIPE DART APPROACHES LINER WIPER PLUG 07:46 POSITIVE INDICATION OF DART LATCH-UP WITH LINER WIPER PLUG. PRESSURE SPIKE TO 1,000 PSI 07:48 RESUME RECIPROCATING STRING DURING DISPLACEMENT -8 BPM,390 PSI 08:08 PARK STRING AT SETTING DEPTH -LOSING SLACKOFF WEIGHT 08:43 SLOW DISPLACEMENT TO 2 BPM,700 PSI FOR PLUG BUMP 08:46 BUMP PLUG WITH 4,424 STROKES INCREASE PRESSURE TO 4,000 PSI,SLACK OFF TO 60K TO CONFIRM LINER HANGER IS SET BLEED OFF PRESSURE AND CHECK FLOATS -FLOATS HOLDING PICK UP 8'TO EXPOSE DOGS IN RUNNING TOOL 09:02 SLACK OFF 60K TO SET LINER TOP PACKER -PICK UP AND SLACK OFF WITH ROTATION TO CONFIRM PACKER SET Printed 7/5/2011 9:26:22AM rth America -ALASKA- BP Page 17 of 24 Operation Summary Report Common Well Name:W-221 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 5/22/2011 End Date: X3-00W91-C: (5,123,350.00) Project: Prudhoe Bay Site: PB W Pad Rig Name/No.: DOYON 14 Spud Date/Time:5/22/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) FULL RETURNS THROUGHOUT JOB RECIPROCATED LINER WITH 20'STROKES _ CEMENT IN PLACE AT 08:46 CEMENT PUMPED: 390.1 BBLS 11.0 PPG LITECRETE;1,178 SKS @ 1.86 CUFT/SK 92.3 BBLS 15.8 CLASS G;443 SKS @ 1.17 CUFT/SK 2 -UCA TEST SHOWS LEAD COMPRESSIVE STRENGTH AFTER 26.5 HRS AT 500 PSI -UCA TEST SHOWS TAIL COMPRESSIVE STRENGTH AFTER 20.2 HRS AT 1,000 PSI 09:00 - 10:30 1.50 CEMT P INTI CIRCULATE BOTTOMS-UP -5 BPM,200 PSI -RECOVERED 236 BBLS CEMENT CONTAMINATED MUD 10:30 - 11:00 0.50 CEMT P INTI LAY DOWN SINGLE JOINT 5"DRILLPIPE AND ROTATING CEMENT HEAD 11:00 - 12:00 1.00 CEMT P INTI CIRCULATE BOTTOMS-UP -8 BPM,460 PSI -20 RPM,TQ 5K -PICK UP 30'AND RECIPROCATE STRING REMAINING 60'ON STAND -FINAL MUD WT IN AND OUT 9.5 PPG 12:00 - 13:00 1.00 • CEMT P INTI FUNCTION ANNULAR PREVENTOR BLOW DOWN CHOKE AND KILL LINES CLEAR LINES OF CEMENT 13:00 - 16:30 3.50 CEMT P INTI POOH FROM 2242'TO 1,623'MD -RACK BACK DRILLPIPE IN DERRICK -LAY DOWN 15 8"DRILL COLLARS -RACK BACK 5"HWDP IN DERRICK 16:30 - 17:00 0.50 CEMT P INTI POOH FROM 1,623'TO SURFACE -RACK BACK 5"DRILLPIPE IN DERRICK -LAY DOWN LINER RUNNING TOOL --DOG SUB SHEARED 17:00 - 17:30 0.50 CEMT P INTI CLEAR RIG FLOOR OF ALL CEMENT EQUIPMENT RIG UP BOP STACK WASHER 17:30 - 18:30 1.00 BOPSUR P INTI FLUSH BOP STACK FUNCTION ANNULAR PREVENTOR 18:30 - 20:30 2.00 BOPSUR P INTI CLOSE BLIND/SHEAR RAMS CHANGE TOP RAMS FROM 9-5/8"FIXED TO 3-1/2"X6"VBR SIM-OPS: LAY DOWN DRILL COLLAR CROSSOVER SUBS Printed 7/5/2011 9:26:22AM "rth America-ALASKA- BP Page 18 of 24 Operation Summary Report Common Well Name:W-221 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 5/22/2011 End Date: X3-00W91-C:(5,123,350.00) Project: Prudhoe Bay Site: PB W Pad Rig Name/No.: DOYON 14 Spud Date/Time: 5/22/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 20:30 - 23:30 3.00 BOPSUR P INTI TEST RAMS FOR UPCOMING DRILLING OPERATIONS -TEST ANNULAR WITH 4"TEST JOINT -250 PSI LOW,3,500 PSI HIGH -TEST 3-1/2"X 6"VBR AND 2-7/8"X 5"VBR WITH 4"AND 5"TEST JOINTS -250 PSI LOW,4,000 PSI HIGH ALL TESTS 5 CHARTED MINUTES -TESTS WITNESSED BY DOYON TOURPUSHER HARRY GOCHENAUER AND BP WSL FRANK ROACH -AOGCC INSPECTOR JEFF JONES WAIVED WITNESS OF RAM TEST 23:30 - 00:00 0.50 CASING P INTI MAKE UP MULESHOE TO 4"DRILLPIPE TO 218'MD SINGLE IN WITH 4"DRILLPIPE TO BUILD STANDS FOR UPCOMING HOLE SECTION 6/4/2011 00:00 - 05:00 5.00 CASING P INTI CONTINUE TO SINGLE IN WITH 4"DRILLPIPE FROM PIPESHED FROM 218'TO 5,212'MD 05:00 - 06:30 1.50 CASING P INTI CIRCULATE AND CONDITION MUD FOR MUD SWAP -ROTATE AND RECIPROCATE DRILLSTRING -9 BPM,750 PSI -100 RPM,TQ 5K -FINAL MUD WT IN AND OUT 9.6 PPG 06:30 - 11:00 4.50 CASING P INTI FLOW CHECK WELL -NO FLOW • POOH FROM 5,212'TO SURFACE • -RACK BACK 4"DRILLPIPE IN DERRICK -LAY DOWN MULESHOE 11:00 - 13:00 2.00 CASING P INTI SLIP AND CUT DRILLING LINE SERVICE RIG 13:00 - 13:30 0.50 CASING P INTI CLOSE BLIND/SHEAR RAMS RIG UP TO TEST 9-5/8"LINER 13:30 - 14:30 1.00 CASING P INTI TEST 9-5/8"LINER AND 13-3/8"CASING ABOVE LINER TOP PACKER -250 PSI LOW FOR 5 MINUTES -3,500 PSI HIGH FOR 30 MINUTES -CHART BOTH TESTS -11 BBLS TO REACH TEST PRESSURE -BLED OFF 40 PSI IN FIRST 15 MINUTES -BLED OFF 10 PSI IN SECOND 15 MINUTES -BLED BACK 11 BBLS -GOOD TEST 14:30 - 15:00 0.50 CASING P INTI RIG DOWN TEST EQUIPMENT BLOW DOWN CHOKE MANIFOLD,CHOKE AND KILL LINES OPEN BLIND/SHEAR RAMS Printed 7/5/2011 9:26:22AM ,rth America-ALASKA- BP Page 19 of 24 Operation Summary Report Common Well Name:W-221 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 5/22/2011 End Date: X3-00W91-C: (5,123,350.00) Project:Prudhoe Bay Site: PB W Pad Rig Name/No.: DOYON 14 Spud Date/Time:5/22/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 15:00 - 16:00 1.00 CASING P INTI PICK UP AND MAKE UP RTTS ASSEMBLY PER HALLIBURTON REP AS FOLLOWS: -5"MULESHOE -CROSSOVER PUP -CROSSOVER PUP -12-1/4"NON-MAG INTEGRAL BIT STABILIZER (TO NO-GO ON LINER TOP) NON-MAG BOTTLENECK CROSSOVER PUP -HALLIBURTON RTTS PACKER -HALLIBURTON RTTS CIRCULATING VALVE -HANDLING PUP -1 STAND NON-MAG DRILL COLLARS WITH 8-3/4"STABILIZER -4 STANDS 5"HWDP •TOTAL BHA LENGTH:496.30' 16:00 - 18:00 2.00 CASING P INTI RIH WITH RTTS ASSEMBLY FROM 496'TO 2,272'MD TAGGED UP ON LINER TOP AT 2,272'MD 18:00 - 19:30 1.50 CASING P INTI CIRCULATE SURFACE-TO-SURFACE -10 BPM,240 PSI RECIPROCATE STRING FULL STAND -OBTAIN SLOW PUMP RATES AT END OF CIRCULATION 19:30 - 20:30 1.00 CASING P INTI LAY DOWN TOP JOINT OF DRILLPIPE STAND PICK UP FULL-OPENING SAFETY VALVE (FOSV),4-1/2"IF X 4"XT-39 CROSSOVER, SIDE-ENTRY PUMP-IN SUB,AND 4"XT-39 X 4-1/2"IF CROSSOVER MAKE UP TO DRILLSTRING SET RTTS AT 2,236' -CENTER OF ELEMENT DEPTH OPEN CIRCULATING VALVE 20:30 - 21:00 0.50 CASING P INTI CLOSE CIRCULATING VALVE CLOSE ANNULAR PREVENTOR LINE UP AND PRESSURE TEST BACKSIDE TO 1,000 PSI FOR 5 MINUTES -CHART TEST OPEN CIRCULATING VALVE REVERSE CIRCULATE THROUGH KILL LINE, TAKING RETURNS THROUGH CHOKE MANIFOLD -OBTAIN SLOW PUMP RATES 21:00 - 22:00 1.00 CASING P INTI LINE UP LITTLE RED HOT OIL TRUCK TO SIDE ENTRY SUB PUMP 2 BBLS TO FLOOD LINES CLOSE FOSV PRESSURE TEST LINES TO 500 PSI LOW, 2,000 PSI HIGH 22:00 - 22:30 0.50 CASING P INTI OPEN FOSV AND PUMP 36 BBLS 60 DEGREE DIESEL DOWN DRILLPIPE AT 2 BPM -FINAL PRESSURE WHEN SHUT IN 270 PSI CLOSE CIRCULATING VALVE BLEED OFF DRILLPIPE PRESSURE TO LITTLE RED HOT OIL PUMP TRUCK CLOSE FOSV DRAIN DIESEL LINES BACK TO LITTLE RED PUMP TRUCK REMOVE LINE FROM SIDE-ENTRY PUMP-IN SUB AND HOOK UP PRESSURE SENSOR FOR DIGITAL GAUGE Printed 7/5/2011 9:26:22AM 'rth America-ALASKA- BP Page 20 of 24 Operation Summary Report Common Well Name:W-221 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 5/22/2011 End Date: X3-00W91-C: (5,123,350.00) Project:Prudhoe Bay Site:PB W Pad Rig Name/No.: DOYON 14 Spud Date/Time:5/22/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 22:30 - 23:00 0.50 CASING P INTI OPEN FOSV AND BEGIN NEGATIVE PRESSURE TEST -30 MINUTE TEST l,Ai -CHART TEST WITH CHART RECORDER -RECORD PRESSURE FROM DIGITAL GAUGE EVERY 2 MINUTES 0 PRESSURE BUILD-UP DURING TEST RIG DOWN TEST CHART 23:00 - 23:30 0.50 CASING P INTI OPEN CIRC VALVE LINE UP AND REVERSE CIRCULATE DIESEL FROM DRILLPIPE -TAKE RETURNS THROUGH SIDE-ENTRY PUMP-IN SUB TO CHOKE MANIFOLD AND OUT TO CUTTINGS BOX AT ROCK WASHER -DIESEUMUD INTERFACE 7 BBLS INTO CIRCULATING -CLEAN MUD AT TANK 29 BBLS INTO CIRCULATING SHUT DOWN AND OPEN RAMS FLOW CHECK -NO FLOW 23:30 - 00:00 0.50 CASING P INTI RELEASE RTTS AND ALLOW ELEMENTS TO RELAX RIG DOWN CIRCULATING HOSE BLOW DOWN CHOKE MANIFOLD,CHOKE AND KILL LINES LAY DOWN CROSSOVER,SIDE-ENTRY PUMP-IN SUB,AND CROSSOVER PLACE FOSV IN STAND FOR WELL CONTROL CONTINGENCY 6/5/2011 00:00 - 01:00 1.00 CASING P INTI FINISH BLOWING DOWN CHOKE MANIFOLD AND LINES RIG DOWN TEST EQUIPMENT 01:00 - 01:30 0.50 CASING P INTI CIRCULATE SURFACE TO SURFACE -10 BPM,220 PSI ......_._.. -.. .. . -FINAL MUD WT IN AND OUT 9.5 PPG 01:30 - 03:30 2.00 CASING P INTI FLOW CHECK WELL -NO FLOW POOH FROM 2,236'TO 38' 03:30 - 04:00 0.50 CASING P INTI PULL RTTS ABOVE RIG FLOOR BREAK OUT AND LAY DOWN MULESHOE, CROSSOVERS AND STABILIZER LAY DOWN RTTS ASSEMBLY CLEAN AND CLEAR RIG FLOOR 04:00 - 05:30 1.50 CASING P INTI MOBILIZE 8-3/4"PRODUCTION BHA(BHA#5) TO RIG FLOOR Printed 7/5/2011 9:26:22AM 'rth America-ALASKA- BP Page 21 of 24 Operation Summary Report Common Well Name:W-221 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 5/22/2011 End Date: X3-00W91-C: (5,123,350.00) Project: Prudhoe Bay Site: PB W Pad Rig Name/No.: DOYON 14 Spud Date/Time:5/22/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 05:30 - 07:30 2.00 CASING P INTI MAKEUP 8-3/4"PRODUCTION DRILLING BHA PER SCHLUMBERGER AS FOLLOWS: -8-3/4"HYCALOG DTX619M PDC BIT -SCHLUMBERGER 675M MUD MOTOR;1.5 DEGREE BEND -ARC6 -6-3/4"ILS WITH 8-1/2"STABILIZER MWD -ADN6 2 NON-MAG DRILL COLLARS 8-3/4"INTEGRAL BLADE STABILIZER -NON-MAG DILL COLLAR -FLOAT SAVER SUB -15"X3"HWDP JOINT -SMITH HYDRA JAR -MI SWACO WELL COMMANDER ASSEMBLY -13 5"X 3"HWDP JOINTS -4-1/2"IF PIN X 4"XT-39 BOX CROSSOVER TOTAL BHA LENGTH:673.64' 07:30 - 08:30 1.00 CASING P INTI RIH ON 4"DRILLPIPE FROM 674'TO 2,326'MD SHALLOW TEST MWD -400 GPM,800 PSI MAKE UP GHOST REAMER 2,326'BEHIND BIT 08:30 - 11:30 3.00 CASING P INTI RIH ON 4"DRILLPIPE FROM 2,326'TO 5,893' MD INSTALL 4"XT-39 X 4-1/2"CROSSOVER IN STRING CHANGE ELEVATORS AND SLIPS FROM 4"TO 5" 11:30 - 13:00 1.50 CASING P INTI RIH ON 5"DRILLPIPE FROM 5,893'TO 7,867' MD -TAG LANDING COLLAR AT 7,867' 13:00 - 14:00 1.00 CASING P INTI EMPTY PITS 1 AND 2 HOLD PJSM WITH RIG CREW AND CH2M HILL TRUCK DRIVERS RIG UP TO DISPLACE WELL TO NEW LSND 14:00 - 15:00 1.00 CEMT P INTI DRILL OUT LANDING COLLAR AND SHOETRACK FROM 7,867'TO 7,940'MD -294 GPM,1,200 PSI -50 RPM, TQ 15K -DRILL OUT WHILE DISPLACING 9.5 PPG LSND TO 9.0 PPG LSND. 15:00 - 15:30 0.50 CEMT P INTI FINISH DISPLACEMENT FROM 9.5 PPG LSND TO 9.0 PPG LSND -294 GPM,900 PSI -50 RPM,TQ 13K 15:30 - 16:00 0.50 CEMT P INTI ADJUST A-LEGS ON DERRICK TO CENTER TOP DRIVE ON WELL 16:00 - 17:00 1.00 CEMT P INTI FINISH CLEANING PITS 1 AND 2 AND LOAD WITH 9.0 PPG LSND 17:00 - 18:00 1.00 CEMT P INTI OBTAIN SLOW PUMP RATES PRIOR TO DRILLING OUT DRILL OUT REMAINING SHOETRACK, RATHOLE,AND 20'OF NEW FORMATION FROM 7,940'TO 7,970'MD 18:00 - 19:00 1.00 CEMT P INTI CIRCULATE BOTTOMS-UP -360 GPM,1,050 PSI -50 RPM,TQ 8K Printed 7/5/2011 9:26:22AM ,rth America-ALASKA- BP Page 22 of 24 Operation Summary Report Common Well Name:W-221 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 5/22/2011 End Date: X3-00W91-C:(5,123,350.00) Project:Prudhoe Bay Site: PB W Pad Rig Name/No.: DOYON 14 Spud Date/Time:5/22/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 19:00 - 19:30 0.50 CEMT P INTI FLOW CHECK WELL -NO FLOW RACK BACK ONE STAND AND MOUSEHOLE SINGLE JOINT FROM 7,970'TO 7,937'MD 19:30 - 21:00 1.50 CEMT P INTI RIG UP AND PERFORM LOT -PRESSURE DEVIATION AT 950 PSI -ACHIEVED 14.09 PPG EMW LEAKOFF -6.3 BBLS PUMPED TO ACHIEVE LEAKOFF 2.0 BBLS BLED BACK 21:00 - 22:00 1.00 DRILL P PROD1 OBTAIN ECD BASELINE WHILE WAITING ON AUTHORIZATION TO PROCEED FROM ANCHORAGE -AUTHORIZATION RECEIVED FROM BOTH ODE WILSON QUINTA AND WTL MIKE SCHULTZ 22:00 - 00:00 2.00 DRILL P PROD1 DIRECTIONALLY DRILL FROM 7,970'TO 8,351' MD -PUW 158K,SOW 87K, ROT 115K -600 GPM,2,300 PSI OFF,2,450 PSI ON -120 RPM,TQ 9K OFF,11K ON -WOB 20K -9.0 PPG MUD WT IN AND OUT -CALCULATED ECD 9.60 PPG,ACTUAL 9.81 ART 0.98,AST 0.32,ADT 1.30 ADT FOR LAST 24 HRS: 1.30 6/6/2011 00:00 - 12:00 12.00 DRILL P PROD1 DIRECTIONALLY DRILL FROM 8,351'TO 9,860' MD -PUW 185K,SOW 85K, ROT 119K -600 GPM,2,850 PSI OFF,3,100 PSI ON -120 RPM,TQ 15K OFF,16K ON -WOB 15K -9.2 PPG MUD WT IN,9.3 PPG MUD WT OUT -CALCULATED ECD 9.91 PPG,ACTUAL 10.61 ART 3.24,AST 2.05,ADT 5.29 12:00 - 00:00 12.00 DRILL P PROD1 DIRECTIONALLY DRILL FROM 9,860'TO 11,618'MD -PUW 202K,SOW 94K, ROT 132K -600 GPM,3,150 PSI OFF,3,300 PSI ON -120 RPM,TQ 15K OFF,17K ON -WOB 15K -9.3 PPG MUD WT IN,9.5 PPG MUD WT OUT -CALCULATED ECD 10.22 PPG,ACTUAL 10.62 ART 4.04,AST 1.96,ADT 6.00 ADT FOR LAST 24 HRS: 11.29 HELD UNANNOUNCED D2 KICK WHILE DRILLING DRILL i(1 6/7/2011 00:00 - 11:30 11.50 DRILL P PROD1 DIRECTIONALLY DRILL FROM 11,618'TO 12,720'MD -PUW 225K,SOW 110K, ROT 150K -600 GPM,3,590 PSI OFF,3,700 PSI ON -120 RPM,TQ 22K OFF,23K ON -WOB 15K -9.3 PPG MUD WT IN,9.4 PPG MUD WT OUT -CALCULATED ECD 10.24 PPG,ACTUAL 10.79 Printed 7/5/2011 9:26:22AM •'orth America-ALASKA- BP Page 23 of 24 Operation Summary Report Common Well Name:W-221 AFE No Event Type: DRL-ONSHORE(DON) Start Date:5/22/2011 End Date: X3-00W91-C: (5,123,350.00) Project: Prudhoe Bay Site: PB W Pad Rig Name/No.: DOYON 14 Spud Date/Time:5/22/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 11:30 - 12:30 1.00 DRILL P PROD1 CIRCULATE BHA ANNULAR VOLUME -600 GPM,3,500 PSI -120 RPM,TQ 22K FLOWCHECK WELL -NO FLOW 12:30 - 17:30 5.00 DRILL P PROD1 MAD PASS FROM 12,720'TO 12,039'MD -600 GPM,3,400 PSI 100 RPM,TQ 23K -PULLING SPEED 180 FT/HR 17:30 - 20:00 2.50 DRILL P PROD1 BACKREAM FROM 12,039'TO 10,336'MD -600 GPM,3,300 PSI -120 RPM,TQ 25K 20:00 - 22:00 2.00 DRILL P PROD1 CIRCULATE 2 BOTTOMS-UP ONCE GHOST REAMER INSIDE 9-5/8"LINER -PULL ONE STAND PER BOTTOMS-UP -600 GPM,3,200 PSI -60 RPM,TQ 13K INCREASE IN CUTTINGS ACROSS SHAKERS AT FIRST BOTTOMS-UP -NO INCREASE OBSERVED AT SECOND BOTTOMS-UP -FINAL MUD WT 9.4 PPG IN,9.5 PPG OUT 22:00 - 00:00 2.00 DRILL P PROD1 FLOWCHECK WELL -NO FLOW RIH FROM 10,051'TO 12,706'MD TOP DRIVE UP,WASH DOWN AND TAG TD AT 12,720'MD 6/8/2011 00:00 - 03:30 3.50 DRILL P PROD1 CIRCULATE BOTTOMS-UP AND CONDITION MUD FOR CASING RUN -ROATATE AND RECIPROCATE DRILLSTRING -RACK BACK ONE STAND AT EVERY BOTTOMS-UP -600 GPM,3,100 PSI -120 RPM,TQ 22K -NO INCREASE IN CUTTINGS AT BOTTOMS-UP -FINAL MUD WT 9.3 PPG IN,9.4 PPG OUT -CALCULATED ECD 10.25,ACTUAL ECD 10.33 OBTAIN SLOW PUMP RATES PRIOR TO TRIPPING 03:30 - 12:00 8.50 DRILL P PROD1 FLOW CHECK WELL -NO FLOW POOH FROM 12,515'TO 7,900'MD -MONITOR HOLE FOR SWABBING WHILE PULLING FIRST 5 STANDS FLOW CHECK WITH BHA INSIDE SHOE -NO FLOW POOH FROM 7,900'TO 5,926'MD HELD D1 KICK WHILE TRIPPING DRILL 12:00 - 12:30 0.50 DRILL P PROD1 SERVICE TOP DRIVE AND BLOCKS CHANGE ELEVATORS FROM 5"TO 4" 12:30 14:00 1.50 DRILL P PROD1 POOH FROM 5,926'TO 2,271'MD HELD D1 KICK WHILE TRIPPING DRILL Printed 7/5/2011 9:26:22AM 'orth America -ALASKA- BP Page 24 of 24 Operation Summary Report Common Well Name:W-221 AFE No Event Type: DRL-ONSHORE(DON) Start Date: 5/22/2011 End Date: X3-00W91-C: (5,123,350.00) Project:Prudhoe Bay Site:PB W Pad Rig Name/No.: DOYON 14 Spud Date/Time:5/22/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date 1 From-To Firs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 14:00 - 14:30 0.50 DRILL P PROD1 DROP WELL COMMANDER FUNCTIONING BALL -WELL COMMANDER OPENED AT 1,800 PSI • CIRCULATE HOLE VOLUME WHILE CLEANING LINER TOP j -19.5 BPM,1,240 PSI -100 RPM, TQ 3K 1 DROP WELL COMMANDER FUNCTIONING BALL -WELL COMMANDER CLOSED AT 1,800 PSI 14:30 - 15:30 1.00 DRILL P _ . PROD1 POOH FROM 2,271'TO 674'MD 15:30 - 16:00 j 0.50 DRILL P PROD1 FLOW CHECK WELL WITH BHA BELOW BOP I STACK -NO FLOW • POOH 70 650' CHANGE ELEVATORS FROM 4"TO 5" 16:00 - 17:00 1.00 DRILL P PROD1 LAY DOWN 5"HWDP 17:00 - 18:00 1.00 DRILL P • PROD1 LAY DOWN JARS, DRILL COLLARS AND STABILIZERS • -STABILIZERS IN GAUGE PULL RADIOACTIVE SOURCES FROM MWD 18:00 - 19:00 1.00 DRILL P PROD1 BREAK BIT AND LAY DOWN LAY DOWN MWD TOOLS AND MUD MOTOR BIT GRADE: 2-2-WT-A-X-I-CT-TD END DON PHASE FOR W-221. MOVE TO CON ' PHASE Printed 7/5/2011 9:26:22AM North America-ALASKA-BP Page 1 of 13 Operation Summary Report Common Well Name:W-221 AFE No Event Type:COM-ONSHORE(CON) Start Date:6/8/2011 End Date: X3-00W91-C: (3,446,515.00) Project: Prudhoe Bay Site:PB W Pad Rig Name/No.: DOYON 14 Spud Date/Time: 5/22/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 6/8/2011 19:00 - 20:30 1.50 CASING P RUNPRD CLEAR RIG FLOOR OF 8-3/4"BHA COMPONENTS CHANGE OUT TOP RAMS FROM 3-1/2"X 6" VBR TO 7"PIPE RAMS MOBILIZE TEST EQUIPMENT TO RIG FLOOR 20:30 - 21:30 1.00 BOPSUR P RUNPRD .PULL WEAR RING AND INSTALL TEST PLUG WITH 7"TEST JOINT TEST 7"RAMS WITH 7"TEST JOINT -250 PSI LOW,4,000 PSI HIGH -5 MINUTES EACH TEST -TEST WITNESSED BY DOYON TOURPUSHER MIKE SMITH AND BP WSL FRANK ROACH -AOGCC INSPECTOR JEFF JONES WAIVED WITNESS OF RAM TEST RIG DOWN TEST EQUIPMENT 21:30 22:00 0.50 CASING P RUNPRD PICK UP 7"LANDING JOINT AND 7"HANGER -FLUTED GUIDE INSTALLED ON LANDING JOINT,4'ABOVE HANGER PERFORM DUMMY RUN WITH 7"HANGER AND LAND IN CASING SPOOL -MARK LANDING JOINT AT RIG FLOOR PULL HANGER AND LAY DOWN LANDING JOINT/HANGER ASSEMBLY MAKE UP 5"SAFETY JOINT WITH 5"FOSV IN TOP 22:00 - 00:00 2.00 CASING P RUNPRD MOBILIZE 7"CASING RUNNING EQUIPMENT TO RIG FLOOR RIG UP TO RUN 7"CASING 6/9/2011 00:00 - 02:00 2.00 CASING P RUNPRD FINISH RIGGING UP TO RUN 7"CASING HOLD PRE-JOB WITH RIG CREW AND DOYON CASING CREW 02:00 - 16:30 14.50 CASING P RUNPRD RUN 7"26#L-80 VAM TOP HC CASING AS FOLLOWS -MAKE UP 7"BTC-M SHOETRACK BAKERLOCK SHOETRACK AND MAKE UP TO MARK -CHECK FLOATS AFTER JOINT 4 --FLOATS HOLDING -TORQUE TURN ALL CONNECTIONS -USE JET LUBE SEAL GUARD THREAD DOPE -FILL EVERY JOINT -OBTAIN PICKUP AND SLACKOFF WEIGHTS EVERY 10 JOINTS 16:30 - 17:00 0.50 CASING P RUNPRD CIRCULATE BOTTOMS-UP WITH CASING AT 9-5/8"LINER SHOE -STAGE UP TO 7 BPM,810 PSI 17:00 - 18:30 1.50 CASING N SFAL 7,926.00 RUNPRD REPLACE RUBBER CUP ON FRANKS TOOL Printed 7/5/2011 9:26:44AM 'irth America-ALASKA- BP Page 2 of 13 Operation Summary Report Common Well Name:W-221 AFE No Event Type: COM-ONSHORE(CON) Start Date:6/8/2011 End Date: X3-00W91-C:(3,446,515.00) Project: Prudhoe Bay Site: PB W Pad Rig Name/No.: DOYON 14 Spud Date/Time:5/22/2011 12:00:00AM Rig Release: Rig Contractor DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 18:30 - 00:00 5.50 CASING P RUNPRD CONTINUE TO RUN 7"26#L-80 VAM TOP HC CASING AS FOLLOWS -TORQUE TURN ALL CONNECTIONS -USE JET LUBE SEAL GUARD THREAD DOPE FILL EVERY JOINT -BREAK CIRCULATION EVERY 5 JOINTS WHILE RUNNING THROUGH UGNU FORMATION -OBTAIN PICKUP AND SLACKOFF WEIGHTS EVERY 10 JOINTS -CIRCULATE DOWN EVERY JOINT FROM 9,402'TO 9,689'DUE TO BROOMSTICK TREND -CIRCULATE DOWN EVERY JOINT FROM 10,088'TO 10,291'DUE TO BROOMSTICK TREND -CASING DEPTH AT MIDNIGHT: 10,291'MD 6/10/2011 00:00 - 05:30 5.50 CASING P RUNPRD CONTINUE TO RUN 7"26#L-80 VAM TOP HC CASING FROM 10,291'AS FOLLOWS -TORQUE TURN ALL CONNECTIONS -USE JET LUBE SEAL GUARD THREAD DOPE -FILL EVERY JOINT -OBTAIN PICKUP AND SLACKOFF WEIGHTS EVERY 10 JOINTS -CIRCULATE DOWN EVERY JOINT FROM 10,291'TO 10,704' -BREAK CIRCULATION EVERY 5 JOINTS FROM 10,704'TO 11,528' -BREAK CIRCULATION EVERY 10 JOINTS FROM 11,528' -JOINT 283(LENGTH 39.58')HAD DAMAGED BOX END --REPLACE WITH SPARE JOINT(LENGTH 39.56') WASH DOWN LAST JOINT FROM 12,639'TO 12,676' -6 BPM,900 PSI FINAL STRING WEIGHTS PRIOR TO PICKING UP LANDING JOINT: -PUW 270K,SW 115K 05:30 - 06:30 1.00 CASING P RUNPRD PICK UP LANDING JOINT WITH HANGER ATTACHED AND MAKE UP TO CASING STRING LAND CASING STRING ON MANDREL LAY DOWN FRANKS FILL-UP TOOL MAKE UP CEMENT HEAD CROSSOVER AND CEMENT HEAD TO LANDING JOINT 06:30 - 08:30 2.00 CEMT P RUNPRD CIRCULATE AND CONDITION MUD FOR CEMENT JOB -RECIPROCATE CASING -STAGE UP TO 6 BPM,810 PSI Printed 7/5/2011 9:26:44AM • 'orth America-ALASKA- BP Page 3 of 13 Operation Summary Report Common Well Name:W-221 AFE No Event Type:COM-ONSHORE(CON) Start Date:6/8/2011 End Date: X3-00W91-C: (3,446,515.00) Project: Prudhoe Bay Site: PB W Pad Rig Name/No.:DOYON 14 Spud Date/Time: 5/22/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 08:30 - 11:00 2.50 CEMT P RUNPRD CEMENT 7"PRODUCTION CASING,WITH RECIPROCATION AS FOLLOWS: I/ 08:05 BATCH MIX 10.0 PPG MUD PUSH II 08:10 HOLD PRE-JOB SAFETY MEETING WITH RIG CREW,SCHLUMBERGER CEMENT CREW AND CH2M HILL TRUCK PUSHER 08:18 PUMP 5 BBLS MUD PUSH II 08:20 TEST TRIPS TO 1,600 PSI-GOOD.TEST LINES TO 4,500 PSI-GOOD 08:27 PUMP 18 BBLS 10.0 PPG MUD PUSH II AT 4 BPM,540 PSI 08:35 BATCH UP FIRST TUB LITECRETE LEAD CEMENT 05:40 TUB TO WEIGHT 08:42 DROP BOTTOM PLUG.POSITIVE INDICATION PLUG AWAY 08:45 PUMP 91.7 BBL 11.0 PPG LITECRETE LEAD AWAY AT 5.2 BPM -11.0 PPG LITECRETE -5.2 BPM,990 PSI TREATING PRESSURE 09:03 FINISHED WITH LEAD. BATCH FIRST TUB 15.8 PPG G CEMENT 09:11 TAIL CEMENT TO WEIGHT 09:13 SWAP TO TAIL CEMENT PUMP 43.2 BBLS 15.8 PPG CLASS G TAIL CEMENT AWAY AT 5.5 BPM -15.8 PPG CLASS G NEAT -5.5 BPM,1,000 PSI TREATING PRESSURE 09:25 STOP PUMPING CEMENT 09:30 DROP TOP PLUG.POSITIVE INDICATION PLUG AWAY 09:32 BEGIN DISPLACEMENT WITH RIG PUMP -DISPLACE WITH 9.2 PPG BRINE -PUMP 6 BPM,570 PSI -SLOW DOWN TO 4 BPM,1,020 PSI 10:48 SLOW DISPLACEMENT TO 2 BPM,850 PSI FOR PLUG BUMP 11:02 BUMP PLUG WITH 4.752 STROKE$ BLEED OFF PRESSURE AND CHECK FLOATS -FLOATS HOLDING FL ll I RFTURNS THROUGHOUT JOB RECIPROCATED CASING WITH 20'STROKES -STOPPED RECIPROCATING AND LANDED CASING ON HANGER 4,592 STROKES INTO DISPLACEMENT CEMENT IN PLACE AT 11:02 CEMT PUMPED: / 91.7 BBLS 11.0 PPG LITECRETE;272 SKS @ 1.89 CUFT/SK 43.2 BBLS 15.8 CLASS G;207 SKS @ 1.17 CUFT/SK -UCA TEST SHOWS LEAD COMPRESSIVE STRENGTH AFTER 17.0 HRS AT 500 PSI -UCA TEST SHOWS TAIL COMPRESSIVE STRENGTH AFTER 13.5 HRS AT 1,000 PSI Printed 7/5/2011 9:26:44AM 'firth America-ALASKA- BP Page 4 of 13 Operation Summary Report Common Well Name:W-221 AFE No Event Type:COM-ONSHORE(CON) Start Date:6/8/2011 End Date: X3-00W91-C: (3,446,515.00) Project: Prudhoe Bay Site: PB W Pad Rig Name/No.: DOYON 14 Spud Date/Time: 5/22/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 11:00 - 12:00 1.00 CEMT P RUNPRD RIG BACK UP TO CEMENT HEAD PRESSURE TEST 7"CASING -250 PSI LOW TEST FOR 5 MINUTES -4,000 PSI TEST FOR 30 MINUTES --LOST 0 PSI IN FIRST 15 MINUTES --LOST 0 PSI IN SECOND 15 MINUTES RECEIVED AUTHORIZATION TO PROCEED FROM WTL MIKE SCHULTZ 12:00 - 13:30 1.50 CEMT P RUNPRD RIG DOWN CEMENTING EQUIPMENT AND REMOVE FROM RIG FLOOR BACK OUT LANDING JOINT FROM HANGER AND LAY DOWN LANDING JOINT 13:30 - 14:30 1.00 WHSUR P RUNPRD PICK UP JT 5"DRILLPIPE WITH RUNNING TOOL SET 7"HANGER PACKOFF IN WELLHEAD AND RILDS TO ENERGIZE PACKOFF TEST PACKOFF -250 PSI LOW FOR -5,000 PSI HIGH FOR 30 MINUTES -BOTH TEST CHARTED BY FMC 14:30 16:00 1.50 CASING P RUNPRD LAY DOWN CASING RUNNING EQUIPMENT 16:00 - 16:30 0.50 WHSUR P RUNPRD RIG UP TO OA VALVE ESTABLISH INJECTION DOWN OA FOR UPCOMING FREEZE-PROTECT -3 BPM, PRESSURE BROKE OVER @ 1,750 PSI --10 BBLS TO ACHIEVE PRESSURE BREAKOVER -INJECT ADDITIONAL 3 BBLS CONTNUE INJECTING 2 BBLS EVERY HOUR UNTIL LEAD CEMENT REACHES 500 PSI COMPRESSIVE STRENGTH -HOURLY INJECTIONS BROKE DOWN AT 1,450 PSI 16:30 - 18:00 1.50 BOPSUR P RUNPRD CHANGE OUT UPPER RAMS FROM 7"FIXED TO 3-1/2"X 6"VBR 18:00 - 19:00 1.00 CASING P RUNPRD INSTALL SHORT BALES ON TOP DRIVE AND 5"ELEVATORS 19:00 - 19:30 0.50 CASING P RUNPRD LAY DOWN 1 STAND 5"DRILLPIPE FROM DERRICK 19:30 - 21:30 2.00 CASING P RUNPRD SLIP AND CUT DRILLING LINE SERVICE TOP DRIVE AND BLOCKS 21:30 - 23:00 1.50 CASING P RUNPRD LAY DOWN REMAINING 16 STANDS 5" DRILLPIPE FROM DERRICK 23:00 - 00:00 1.00 BOPSUR P RUNPRD INSTALL UPPER TEST PLUG IN WELLHEAD RIG UP TO TEST BOPE Printed 7/5/2011 9:26:44AM • 'firth America-ALASKA-BP Page 5 of 13 Operation Summary Report Common Well Name:W-221 AFE No Event Type: COM-ONSHORE(CON) Start Date:6/8/2011 End Date: X3-00W91-C: (3,446,515.00) Project: Prudhoe Bay Site: PB W Pad Rig Name/No.: DOYON 14 Spud Date/Time:5/22/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 6/11/2011 00:00 07:30 7.50 BOPSUR P RUNPRD PERFORM BOP TEST PER AOGCC/BP REGULATIONS AS FOLLOWS: -ALL TESTS CHARTED 250 PSI LOW,4,000 PSI HIGH FOR 5 MINUTES EACH -3-1/2"TEST JOINT --ANNULAR TO 3,500 PSI HIGH 3-1/2"X6"VBR TOP RAMS,CHOKE MANIFOLD VALVES 1,12,13,14, HCR KILL LINE VALVE,TOP DRIVE IBOP L --CHOKE MANIFOLD VALVES 9,11, MANUAL rr IBOP I� --CHOKE MANIFOLD VALVES 4,8,10,4"XT-39 FOSV I --CHOKE MANIFOLD VALVES 4,6,7,4"XT-39 DART VALVE --CHOKE MANIFOLD VALVE 2 HCR HOKE LINE VALVE,3-1/2"IF FOSV --MANUAL CHOKE AND KILL LINE VALVES 2-7/8"X5"VBR BOTTOM RAMS -BLIND/SHEAR RAMS 4"TEST JOINT 3-1/2"X6"TOP RAMS,4-1/2"IF FOSV 2-7/8"X5"BOTTOM RAMS TEST ACCUMULATOR -SYSTEM PRESSURE 3,500 PSI -PRESSURE AFTER ACTIVATION: 1,800 PSI -TIME TO REGAIN 200 PSI:00:43 -TIME TO REGAIN SYSTEM PRESSURE:02:59 -NITROGEN BACKUP:4 BOTTLES AT 2,100 PSI EACH TEST WITNESSED BY DOYON TOURPUSHERS MIKE SMITH AND BOBBY INGRAM AND BP WSLS FRANK ROACH AND BLAIR NEUFELD AOGCC INSPECTOR MATT HERRERRA WAIVED WITESS OF TEST HELD D4 ACCUMULATOR DRILL SIMOPS:FREEZE PROTECT 7"X 13-3/8"/9-5/8" OUTER ANNULUS -TEST LITTLE RED HOT OIL PUMP LINES TO 4,500 PSI --GOOD TEST -CLEAR ANNULUS WITH 431 BBLS 9.3 PPG LSND --ANNULAR VOLUME+ 10% --2 BPM,1,390 PSI FOR 30 BBLS --INCREASE TO 3 BPM,1,380 PSI -SWAP OVER TO LITTLE RED HOT OIL TRUCK -PUMP 250 BBLS DEAD CRUDE --2 BPM,1,800 PSI 07:30 - 08:30 1.00 BOPSUR P RUNPRD RIG DOWN TEST EQUIPMENT INSTALL WEAR RING REMOVE TEST TOOLS FROM RIG FLOOR 08:30 - 10:30 2.00 CEMT P RUNPRD CHANGE OUT SAVER SUB IN TOP DRIVE FROM 4-1/2"IF TO 4"XT-39 10:30 - 11:30 1.00 PERFOB P OTHCMP MOBILIZE PERFORATING TOOLS TO RIG FLOOR LOAD PERF GUNS INTO PIPE SHED Printed 7/5/2011 9:26:44AM • -'orth America -ALASKA- BP Page 6 of 13 Operation Summary Report Common Well Name:W-221 AFE No Event Type:COM-ONSHORE(CON) Start Date:6/8/2011 End Date: X3-00W91-C: (3,446,515.00) Project: Prudhoe Bay Site: PB W Pad Rig Name/No.: DOYON 14 Spud Date/Time:5/22/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 11:30 - 12:00 0.50 PERFOB P OTHCMP SERVICE RIG LUBRICATE TOP DRIVE AND DRAWWORKS CHANGE ELEVATORS FROM 4"TO 3-1/2" 12:00 - 12:30 0.50 PERFOB P OTHCMP HOLD PJSM WITH RIG CREW AND •SCHLUMBERGER TCP HANDS 12:30 - 13:30 1.00 PERFOB P OTHCMP MAKE UP DPC PERF GUNS,FIRING HEAD, AND MWD 13:30 - 15:00 1.50 PERFOB P OTHCMP CHANGE ELEVATORS FROM 3-1/2"TO 4" SINGLE IN ON 4"DRILLPIPE FROM 303'TO 1,246' 15:00 - 15:30 0.50 PERFOB P OTHCMP SHALLOW TEST MWD TOOL -220 GPM,300 PSI -9.2 PPG BRINE IN AND OUT 15:30 - 22:30 7.00 PERFOB P OTHCMP CONTINUE TO SINGLE IN ON 4"DRILLPIPE FROM 1,246'TO 7,674' 22:30 - 00:00 1.50 PERFOB P OTHCMP RIH ON 4"DRILLPIPE STANDS FROM 7,674' TO 11,116'MD 6/12/2011 00:00 - 01:00 1.00 PERFOB P OTHCMP PICK UP STAND 4"DRILLPIPE -PUW 174K,SOW 102K RIH AND TAG FLOAT COLLAR AT 12,622'MD 01:00 - 04:00 3.00 PERFOB P OTHCMP PICK UP TO DRILLPIPE CONNECTION AT 12,608'MD LOG FROM 12,608'MD TO 12,335'MD -300 GPM,1,870 PSI -9.2 PPG BRINE IN AND OUT -CORRELATE LOG PASS TO MAD PASS MWD LOG FROM DRILLING RUN 04:00 - 07:30 3.50 • PERFOB P OTHCMP REPEAT LOG PASS AND LOG GUNS ON _ DEPTH -300 GPM,1,770 PSI -9.2 PPG BRINE IN AND OUT 07:30 - 09:30 2.00 PERFOB P OTHCMP HOLD PJSM WITH RIG CREW AND SCHLUMBERGER TCP TECHS CLOSE ANNULAR PREVENTOR, OPEN UP KILL LINE AND RIG UP TO PUMP DOWN BOTH DRILLPIPE AND KILL LINE PRACTICE PRESSURE SEQUENCE BLEED PRESSURE TO ZERO AND WAIT 15 MINUTES TO CLEAR FIRING SEQUENCE 08:36-START PRESSURE SEQUENCE 08:53-BEGIN 6 MINUTE DELAY 08:59-GUNS FIRED 23 MIN 4 SEC INTO SEQUENCE -CALCULATED TIME 23 MIN 0 SEC INITIAL LOSS:4.0 BBLS TCP DATA: 4-1/2"POWERJET 4505;5 SPF;72 DEGREE PHASING OVER 3 INTERVALS 12,140'-12,175'MD;35'INTERVAL 12,267'-12,302'MD;35'INTERVAL 12,345'-12,385'MD;40'INTERVAL 09:30 - 10:00 0.50 PERFOB P OTHC ' 'f9OH 3 • PS To -BU LNOSE ABOVE TOP PERF CIRCULATE BOTTOMS-UP -300 GPM,1,770 PSI -9.2 PPG BRINE IN AND OUT Printed 7/5/2011 9:26:44AM • firth America-ALASKA- BP Page 7 of 13 • Operation Summary Report Common Well Name:W-221 AFE No Event Type:COM-ONSHORE(CON) Start Date:6/8/2011 End Date: X3-00W91-C: (3,446,515.00) Project:Prudhoe Bay Site: PB W Pad Rig Name/No.: DOYON 14 Spud Date/Time:5/22/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 10:00 - 15:30 5.50 PERFOB P OTHCMP FLOW CHECK WELL -STATIC LOSS BLOW DOWN TOP DRIVE AND KILL LINE POOH WITH PER GUN ASSEMBLY FROM 12,035'TO 304'MD HELD D1 KICK WHILE TRIPPING DRILL 15:30 - 16:00 0.50 PERFOB P OTHCMP FLOW CHECK WELL FOR 10 MINUTES PRIOR TO PULLING PERF GUNS THROUGH BOP STACK HOLD PJSM WITH RIG CREW AND SCHLUMBERGER TCP TECHNICIANS ON LAYING DOWN PERF GUNS 16:00 - 17:30 1.50 PERFOB P OTHCMP LAY DOWN MWD TOOL, FIRING HEAD,AND PERF GUNS -ALL GUNS FIRED 17:30 - 19:00 1.50 PERFOB P OTHCMP CLEAR RIG FLOOR OF TCP TOOLS AND EQUIPMENT 19:00 - 20:00 1.00 CLEAN P CLEAN MOBILIZE MI SWACO CLEANOUT TOOLS TO RIG FLOOR 20:00 - 20:30 0.50 CLEAN P CLEAN MAKE UP SWACO CLEANOUT ASSEMBLY _ PER MI SWACO TECH AS FOLLOWS 6-1/8"USED HUGHES MX-R18DX TRICONE BIT -3-1/2"REG X 4"XT 39 BIT SUB -4"XT-39 X 3-1/2"IF CROSSOVER -MAGNOSTAR MAGNET AASSEMBLY(4 MAGNETS TOTAL) -RIDGEBACK BURR MILL/RAZORBACK CASING CLEANUP TOOL ASSEMBLY -PUP TOOL MAGNET ASSEMBLY(2 MAGNETS TOTAL) -3-1/2"IF X 4"XT-39 CROSSOVER TOTAL BHA LENGTH:62.26' 20:30 - 00:00 3.50 CLEAN P CLEAN CHANGE ELEVATORS FROM 3-1/2"TO 4" RIH ON 4"DRILLPIPE FROM 6'TO 9,000'MD HELD D1 KICK WHILE TRIPPING DRILL 6/13/2011 00:00 - 00:30 0.50 CLEAN P CLEAN SERVICE RIG 00:30 - 02:00 1.50 CLEAN P CLEAN RIH ON 4"DRILLPIPE FROM 9,000'TO 12,140' MD Printed 7/5/2011 9:26:44AM lith America-ALASKA-BP Page 8 of 13 Operation Summary Report Common Well Name:W-221 AFE No Event Type: COM-ONSHORE(CON) Start Date:6/8/2011 End Date: _ X3-00W91-C: (3,446,515.00) Project: Prudhoe Bay Site:PB W Pad Rig Name/No.: DOYON 14 Spud Date/Time:5/22/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 02:00 - 04:00 2.00 CLEAN P CLEAN TOP DRIVE UP ABOVE TOP PERF INTERVAL -12,140'TO 12,175' ESTABLISH CLEANOUT PARAMETERS -PUW 160K SOW 70K 4 BPM,630 PSI -40 RPM,TQ 4K REAM ACROSS TOP PERF INTERVAL REAM DOWN,BACKREAM UP,REAM DOWN -4 BPM,630 PSI -40 RPM,TQ 5-6K STOP ROTATION AND RIH TO MIDDLE PERF ZONE -12,267 TO 12,302' REAM ACROSS MIDDLE PERF INTFRVAI REAM DOWN,BACKREAM UP,REAM DOWN -4 BPM,630 PSI -40 RPM,TQ 5-6K -OBSERVED PERF GUN DEBRIS ACROSS SHAKERS AT BOTTOMS-UP STROKES STOP ROTATION AND RIH TO BOTTOM PERF ZONE -12,345'TO 12,385' REAM ACROSS BOTTOM PERF INTERVAL REAM DOWN,BACKREAM UP,REAM DOWN -4 BPM,630 PSI -40 RPM,TQ 6K STOP ROTATION, RIH AND TAG PBTD -PBTD TAGGED AT 12,622'MD 04:00 - 05:00 1.00 CLEAN P CLEAN PICK UP TO NEXT TOOL JOINT AT 12,609'MD CIRCULATE BOTTOMS-UP -RECIPROCATE BOTTOM 60'ON STAND -8 BPM,2,550 PSI -9.2 PPG BRINE WT IN AND OUT 05:00 - 12:00 7.00 CLEAN P CLEAN FLOWCHECK WELL FOR 10 MINUTES -NO FLOW POOH LAYING DOWN DRILLPIPE FROM 12,609'TO 3,327'MD 12:00 - 12:30 0.50 CLEAN P CLEAN SERVICE RIG LUBRICATE TOP DRIVE DRAWWORKS,AND BLOCKS 12:30 - 15:00 2.50 CLEAN P CLEAN CONTINUE TO POOH LAYING DOWN DRILLPIPE FROM 3,327'TO 120' 15:00 - 16:30 1.50 CLEAN P CLEAN INSTALL FOSV IN STRING HANG BLOCKS FOR SLIP AND CUT SLIP AND CUT DRILLING LINE FLOW CHECK WELL PRIOR TO PULLING BHA THROUGH BOP STACK -NO FLOW 16:30 - 18:00 1.50 CLEAN P CLEAN LAY DOWN REMAINING DRILLPIPE PULL BHA TO RIG FLOOR -REMOVE RECOVERED METAL FROM MAGNETS AS BHA PULLS THROUGH ROTARY TABLE BREAK BIT AND LAY DOWN CLEANOUT BHA 18:00 - 19:00 1.00 CLEAN P CLEAN CLEAR RIG FLOOR OF CLEANOUT BHA COMPONENTS 19:00 - 00:00 5.00 EVAL N WAIT OTHCMP WAITING ON SCHLUMBERGER E-LINE EQUIPMENT FOR USIT RUN -TROUBLESHOOTING WIRELINE TRACTOR REQUIRED TO RUN LOG Printed 7/5/2011 9:26:44AM Orth America -ALASKA-BP Page 9 of 13 Operation Summary Report Common Well Name:W-221 AFE No Event Type:COM-ONSHORE(CON) Start Date:6/8/2011 End Date: X3-00W91-C:(3,446,515.00) Project: Prudhoe Bay Site:PB W Pad Rig Name/No.: DOYON 14 Spud Date/Time: 5/22/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 6/14/2011 00:00 - 13:30 13.50 EVAL N WAIT OTHCMP WAIT ON SCHLUMBERGER E-LINE FOR USIT LOG SIM OPS: PERFORM REGULAR MAINTENANCE CHECKS LOAD PIPE SHED WITH 3-1/2"TUBING FOR COMPLETION RUN LAYDOWN THE DRILLING SPOOL USING THIRD PARTY CRANE 13:30 - 14:00 0.50 EVAL P OTHCMP PJSM WITH THE E-LINE CREW 14:00 - 15:30 1.50 EVAL P OTHCMP RIG UP E-LINE CREW TO RUN 6.05"GAUGE RING WITH JUNK BASKET AND TEST THE TOOL OUT. 15:30 - 21:00 5.50 EVAL P OTHCMP RUN IN THE HOLE ON E-LINE WITH 6.05" .GAUGE RING AND JUNK BASKET TO 12591'. PULL OUT OF THE HOLE AND RECOVER 1/4 CUP OF SMALL DEBRIS. -TABLE TOP H2S DRILL WITH CARLOS CREW 21:00 - 22:00 1.00 EVAL P OTHCMP RIG UP USIT AND TRACTOR AND TEST BELOW THE RIG FLOOR. 22:00 - 00:00 2.00 EVAL P OTHCMP BEGIN IN THE HOLE WITH USIT AND TRACTOR. 6/15/2011 00:00 - 06:30 6.50 EVAL P OTHCMP RUN IN THE HOLE TO 12450'AND BEGIN LOGGING UP TO PERFORM HI-RES PASS TO VERIFY PERFORATION DEPTHS. 06:30 - 12:00 5.50 EVAL N DFAL OTHCMP TROUBLESHOOT E-LINE AND USIT FOR AC ISSUES. CONSULT WITH SCHLUMBERGER SLOPE AND OFFICE CREW AS WELL AS HOUSTON. 12:00 - 15:00 3.00 EVAL N DFAL OTHCMP TROUBLESHOOT E-LINE AND USIT FOR AC ISSUES. CONSULT WITH SCHLUMBERGER SLOPE AND OFFICE CREW AS WELL AS HOUSTON. 15:00 - 16:30 1.50 EVAL N DFAL OTHCMP PULL OUT OF THE HOLE WITH THE USIT TO TROUBLESHOOT DOWNHOLE TOOLS. 16:30 - 18:00 1.50 EVAL N DFAL OTHCMP TROUBLESHOOT E-LINE DOWNHOLE TOOLS ON SURFACE. FOUND A SHORT IN THE THROUGH WIRE IN THE TRACTOR. 18:00 - 19:30 1.50 EVAL N DFAL OTHCMP CHANGE OUT E-LINE TOOLS ON SURFACE AND TEST. 19:30 - 21:00 1.50 EVAL N DFAL OTHCMP RUN IN THE HOLE TO 12450'WITH USIT AND TRACTOR ON E-LINE. 21:00 - 00:00 3.00 EVAL P OTHCMP BEGIN LOGGING UP TO PERFORM HI-RES PASS TO VERIFY PERFORATION DEPTHS. 6/16/2011 00:00 - 04:00 4.00 EVAL P OTHCMP PFRFORM HI-RES USIT FROM 12450'-11270', THEN CONTINUE NORMAL USIT LOG TO SURFACE. 04:00 - 05:00 1.00 EVAL P OTHCMP LAYDOWN USIT AND PICKUP JUNK BASKET WITH 6.125"GAUGE RING. 05:00 - 08:30 3.50 EVAL P OTHCMP RUN IN THE HOLE WITH THE JUNK BASKET AND 6.125"GAUGE RING TO 12600'. 08:30 - 09:30 1.00 EVAL P OTHCMP PULL OUT OF THE HOLE WITH 6.125"GAUGE RING AND JUNK BASKET. -MOSES CREW HELD SPILL DRILL,CRT 165 SEC. 09:30 - 10:30 1.00 EVAL P OTHCMP RIG DOWN THE JUNK BASKET,TRACTOR, SHEAVES AND MOBILIZE E-LINE TOOLS FROM THE RIG FLOOR. 10:30 - 12:30 2.00 RUNCOM P RUNCMP MOBILIZE I-WIRE TOOLS,CLAMPS,AND CASING TONGS TO THE RIG FLOOR. Printed 7/5/2011 9:26:44AM lith America-ALASKA-BP Page 10 of 13 Operation Summary Report Common Well Name:W-221 AFE No Event Type:COM-ONSHORE(CON) Start Date:6/8/2011 End Date: X3-00W91-C: (3,446,515.00) Project: Prudhoe Bay Site:PB W Pad Rig Name/No.: DOYON 14 Spud Date/Time: 5/22/2011 12:00:00AM 'Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12:30 - 13:30 1.00 RUNCOM P RUNCMP PULL THE WEAR RINGS AND MAKE DUMMY RUN WITH THE TUBING HANGER. 13:30 - 14:30 1.00 RUNCOM P RUNCMP PJSM WITH I-WIRE CREW,BAKER COMPLETION HANDS,CASING CREW,AND •RIG HANDS. Printed 7/5/2011 9:26:44AM 'orth America -ALASKA- BP Page 11 of 13 Operation Summary Report Common Well Name:W-221 AFE No Event Type: COM-ONSHORE(CON) Start Date:6/8/2011 End Date: X3-00W91-C: (3,446,515.00) Project:Prudhoe Bay Site:PB W Pad Rig Name/No.: DOYON 14 Spud Date/Time: 5/22/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 14:30 - 00:00 9.50 RUNCOM P RUNCMP MAKE UP 3 5"COMPLETION AS FOLLOWS: -3.5"9.2#WLEG,3.5"TC-II -3.5",9.2#, L-80 TC-Il PUP -3.5"HES'XN'NIPPLE W/RHC-M:2.750"ID#1 -3.5",9.2#, L-80 TC-II PUP -3.5",9.2#, L-80 TC-II PUP -3.5",9.2#, L-80 TC-II PUP -3.5",9.2#, L-80 TC-II PUP -3.5"HES'X'NIPPLE:2.813"ID #1 -3.5",9.2#, L-80 TC-II PUP -3.5",9.2#, L-80 TC-II PUP -GLM#1 -3.5"X 1.5"MMG-HW W/RD DUMMY- RK LATCH -3.5"9.2#L-80 TC-II LANDING COUPLING W/"A" PROFILE -3.5"9.2#L-80 TC-Il PUP -3.5"9.2#L-80 TC-II PUP -NDPG SINGLE SUB#1 -3.5"9.2#L-80 TC-Il PUP -3.5"X 7"BOT PREMIER PORTED PACKER #1 PACKER -3.5"9.2#L-80 TC-Il PUP -3.5"9.2#L-80 TC-II PUP -GLM#2-3.5"X 1.5"MMG-HW W/RD DUMMY- RK LATCH -3.5"9.2#L-80 TC-II LANDING COUPLING W/"B" PROFILE -3.5"9.2#L-80 TC-II PUP -3.5"9.2#L-80 TC-II PUP -3.5", 9.2#, L-80 TC-II PUP -GLM#3-3.5"X 1.5"MMG-HW W/RD DUMMY- RK LATCH -3.5"9.2#L-80 TC-II LANDING COUPLING W/"C" PROFILE -3.5",9.2#, L-80 TC-Il PUP -3.5",9.2#, L-80 TC-Il PUP -NDPG SINGLE SUB#2 -3.5"9.2#L-80 TC-II PUP -3.5"X 7"BOT PREMIER PORTED PACKER #2 PACKER -3.5",9.2#, L-80 TC-Il PUP -3.5"9.2#L-80 TC-II PUP -GLM#4-3.5"X 1.5"MMG-HW W/RD DUMMY- RK LATCH -3.5"9.2#L-80 TC-II LANDING COUPLING W/"D" PROFILE -3.5"9.2#L-80 TC-II PUP -1 JT(#1)3.5"9.2#L-80 TC-II TUBING -3.5"9.2#L-80 TC-II PUP -GLM#5-3.5"X 1.5"MMG-W W/RD DUMMY- RK LATCH -3.5"9.2#L-80 TC-II LANDING COUPLING W/"E" PROFILE -3.5"9.2#L-80 TC-II PUP -3.5"9.2#L-80 TC-II PUP W/RA TAG @ 12082' -NDPG SINGLE SUB#3 -3.5"9.2#L-80 TC-Il PUP -3.5"X 7"BOT PREMIER PORTED PACKER #3 PACKER -3.5"9.2#L-80 TC-II PUP -37 JTS(#2-#38)3.5"9.2#L-80 TC-Il TUBING Printed 7/5/2011 9:26:44AM .-rth America-ALASKA- BP Page 12 of 13 Operation Summary Report Common Well Name:W-221 AFE No Event Type:COM-ONSHORE(CON) Start Date: 6/8/2011 End Date: X3-00W91-C: (3,446,515.00) Project: Prudhoe Bay Site: PB W Pad Rig Name/No.: DOYON 14 Spud Date/Time:5/22/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) UTILIZED BAKER LOK ON ALL CONNECTIONS UNTIL THE FIRST PACKER AND ALL CONNECTIONS AFTER UTILIZED JET LUBE SEAL GUARD. TORQUE ALL CONNECTIONS TO 2300 FT/LBS. TEST I-WIRE EVERY 1000'. -CARLOS CREW HELD A KICK WHILE TRIPPING DRILL,CRT 165 SEC 6/17/2011 00:00 - 12:00 12.00 RUNCOM P RUNCMP MAKE UP 3.5"COMPLETION AS FOLLOWS: -220 JTS(#39-#258)3.5"9.2#L-80 TC-I1 TUBING UTILIZED BAKER LOK ON ALL CONNECTIONS UNTIL THE FIRST PACKER AND ALL CONNECTIONS AFTER UTILIZED JET LUBE SEAL GUARD. TORQUE ALL CONNECTIONS TO 2300 FT/LBS. TEST I-WIRE EVERY 1000'. -MOSES CREW HELD A KICK WHILE TRIPPING DRILL,CRT 165 SEC. 12:00 - 20:00 8.00 RUNCOM P RUNCMP CONTINUE MAKING UP 3.5"COMPLETION AS FOLLOWS: -52 JTS(#259-#310)3.5"9.2#L-80 TC-Il TUBING -3.5"9.2#L-80 TC-II PUP -3.5"HES'X'NIPPLE:2.813"ID #2(@-2000' TVD) -3.5"9.2#L-80 TC-II PUP -70 JTS(#3114380)3.5"9.2#L-80 TC-II TUBING -TOTAL OF 390 FULL CLAMPS ON THE I-WIRE AND 13 HALF CLAMPS. PICK UP JTS 381,382,AND 20'PUP FOR SPACE-OUT FOR RIGGING UP E-LINE TO LOG ONTO DEPTH. UTILIZED BAKER LOK ON ALL CONNECTIONS UNTIL THE FIRST PACKER AND ALL CONNECTIONS AFTER UTILIZED JET LUBE SEAL GUARD. TORQUE ALL CONNECTIONS TO 2300 FT/LBS. TEST I-WIRE EVERY 1000'. 20:00 - 00:00 4.00 RUNCOM N WAIT RUNCMP WAIT ON SCHLUMBERGER E-LINE CREW. 6/18/2011 00:00 - 02:00 2.00 RUNCOM N WAIT RUNCMP WAIT ON SCHLUMBERGER E-LINE. 02:00 - 02:30 0.50 RUNCOM P RUNCMP PJSM WITH WELL-TEC, SCHLUMBERGER, AND RIG HANDS ABOUT THE UPCOMING E-LINE OPERATION. 02:30 - 05:00 2.50 RUNCOM P RUNCMP RIG UP E-LINE. 05:00 - 12:00 7.00 RUNCOM P RUNCMP BEGIN IN THE HOLE TO LOG COMPLETION ON DEPTH. 12:00 - 13:00 1.00 RUNCOM P RUNCMP LAYDOWN THE 20'PUP JT AND JT#381 AND 382. PICK UP 9.81'PUP JT ALONG WITH JT 381 AND MAKE UP TO THE HANGER. 13:00 - 13:45 0.75 RUNCOM P RUNCMP TERMINATE THE I-WIRE AND TEST THE FITTING TO 5000 PSI FOR 10 MINUTES. GOOD TEST. 13:45 - 14:30 0.75 RUNCOM P RUNCMP LAND TUBING HANGER AND RUN IN LDS. 14:30 - 15:00 0.50 RUNCOM P RUNCMP RIG UP CEMENT LINE AND CHART RECORDER TO THE LANDING JOINT AND IA. Printed 7/5/2011 9:26:44AM irth America-ALASKA- BP Page 13 of 13 Operation Summary Report Common Well Name:W-221 AFE No Event Type:COM-ONSHORE(CON) Start Date:6/8/2011 End Date: X3-00W91-C: (3,446,515.00) Project:Prudhoe Bay Site: PB W Pad Rig Name/No.: DOYON 14 Spud Date/Time:5/22/2011 12:00:00AM Rig Release: Rig Contractor: DOYON DRILLING INC. UWI: Active Datum:W-221 ACTUAL @87.32ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 15:00 - 19:30 4.50 RUNCOM P RUNCMP BULLHEAD 243 BELS OF CORROSION INHIBITED 9.2 PPG BRINE DOWN THE IA AT 3 BPM WITH 1300 PSI. BULLHEAD 75 BBLS OF DIESEL FREEZE PROTECT WITH LRS AT 3 BPM WITH 1300 PSI. 19:30 - 22:00 2.50 RUNCOM P RUNCMP DROP HACPA AND BULLHEAD 25 BBLS OF DIESEL FREEZE PROTECT WITH LRS AT 3 BPM WITH 1000 PSI SWAP OVER TO THE RIG PUMPS AND BULLHEAD 98 BBLS OF 9.2 PPG BRINE AT 1200 PSI. PUMP THE HACPA ON SEAT AND PRESSURE UP TO 1700 PSI. 22:00 - 00:00 2.00 RUNCOM P RUNCMP BLEED THE IA AND TUBING PRESSURE TO 0 PSI. PRESSURE TEST THE TUBING TO 300 PSI LOW FOR 5 MINUTES,4200 PSI HIGH FOR 30 MINUTES. LOST 100 PSI IN THE FIRST 15 MINUTES AND 40 PSI IN THE SECOND 15 MINUTES. BOTH TESTS WERE PASSING. SAW A SLIGHT BOBBLE AT 4000 PSI WHEN THE PACKERS SET. TOOK 1.9 BBLS TO PRESSURE UP AND BLED BACK 1.75 BBLS. PRESSURE TEST THE IA TO 300 PSI FOR 5 MINUTES,4050 PSI FOR 30 MINUTES. LOST 75 PSI IN THE FIRST 15 MINTES AND 25 PSI IN THE SECOND 15 MINUTES. BOTH TESTS WERE PASSING. TOOK 4.75 BBLS TO PRESSURE UP AND BLED BACK 4.5 BBLS. 6/19/2011 00:00 - 01:00 1.00 RUNCOM P RUNCMP CLEAR FLOOR OF ALL THIRD PARTY TOOLS. 01:00 - 02:30 1.50 RUNCOM P RUNCMP INSTALL THE TWC AND TEST FROM ABOVE TO 300 PSI FOR 5 MINUTES AND 3500 PSI FOR 10 MINUTES. 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" t` 8 f a o g E w`a T N C pE 2 Z V O 'n A 11. 0 • x Schiumberger Drilling&Measurements MWD/LWD Log Product Delivery Customer BP Exploration(Alaska)Inc Dispatched To: Christine Mahnken Well No W-221 Date Dispatched: 15-Jun-11 Installation/Rig Doyon-14 Dispatched By: Brian Muzny Data No Of Prints No of CDs Surveys 2 1 Received By: Please sign and return to: Drilling&Measurements LWD Division a ( 1 \ 2525 Cambell Street,Suite 400 Anchorage,Alaska 99501 muzny@slb.com Fax:907-561-8317 LWD Log Delivery V1.0,01/22/2010 N NJ (`_vr E E 0 o 0 o y 41 0 C 7 O 0mu)m c2 12(1 2* 08 .Dnai « a. 0 a O L o {mco J N Y U 3 L U Eli O NS • C v U rn 2 mama MSS y (0 a f0 C. C O ❑ m Iii G C ,- .- r Y C7 p E U 0 N 5 z 0 a N a J 0 0 0 w T C C C C C C C C C C 7 C C 7 C =2' ' ' j j j m m > > > > > > > > > >>> > >> > >9>> 10 m ' `m Q.0 0 0 0 ????777?777?7?7???��- lwffazzz ao w V N m ao ao N N N N N V N N M two Ol Ol t0 n r O 1- c C x .2 U 4 a a. a! 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P.O. Box 196612 Anchorage, AK 99519-6612 Re: Prudhoe Bay Field, Orion Schrader Bluff Pool, PBU W-221 BP Exploration (Alaska), Inc. Permit No: 211-029 Surface Location: 301' FNL, 1175' FEL, SEC. 21, T11N, R12E, UM Bottomhole Location: 392' FNL, 414' FEL, SEC. 09, T11N, R12E, UM Dear Mr. Egbejimba: Enclosed is the approved application for permit to drill the above referenced service well. This permit to drill does not exempt you from obtaining additional permits or an approval required by law from other governmental agencies and does not authorize conducting drilling operations until all other required permits and approvals have been issued. In addition, the Commission reserves the right to withdraw the permit in the event it was erroneously issued. Operations must be conducted in accordance with AS 31.05 and Title 20, Chapter 25 of the Alaska Administrative Code unless the Commission specifically authorizes a variance. Failure to comply with an applicable provision of AS 31.05, Title 20, Chapter 25 of the Alaska Administrative Code, or a Commission order, or the terms and conditions of this permit may result in the revocation or suspension of the permit. Sincerely, 1 Daniel T. Seamount, Jr. Chair DATED thisof March,� day arc , 2011. cc: Department of Fish 85 Game, Habitat Section w/o encl. (via e-mail) Department of Environmental Conservation w/o encl. (via e-mail) STATE OF ALASKA • ALAS' OIL AND GAS CONSERVATION COMMF ON •0//RECEIV / PERMIT TO DRILL FEB 2 3 201 20 AAC 25.005 la.Type of work: lb.Proposed Well Class: 0 Development Oil ®Service-Winj 0 Single Zone �_,• ® Drill 0 Redd!! 0 Stratigraphic Test 0 Development Gas 0 Service-Supply 0 Multiple Zone `" •'',(--;110401g ❑ Re-Entry 0 Exploratory 0 Service-WAG 0 Service-Disp A nageWas 2. Operator Name: 5.Bond: ® Blanket 0 Single Well 11. Well Name and Number: BP Exploration(Alaska)Inc. Bond No. 6194193 PBU W-221 3. Address: 6. Proposed Depth: 12.Field/Pool(s): P.O. Box 196612,Anchorage,Alaska 99519-6612 MD 12657' ND 5400' Prudhoe Bay Field/Orion 4a. Location of Well(Governmental Section): 7. Property Designation(Lease Number): Schrader Bluff Surface: ADL 028263-2&028261 301'FNL, 1175'FEL, SEC.21,T11N, R12E, UM Top of Productive Horizon: 8. Land Use Permit: 13. Approximate Spud Date: 816'FNL,401'FEL,SEC.09,T11N, R12E, UM May 10,2011 Total Depth: 9.Acres in Property: 14.Distance to Nearest Property: 392'FNL,414'FEL,SEC.09,T11N, R12E, UM 2560 20620' 4b. Location of Well(State Base Plane Coordinates-NAD 27): 10.KB Elevation above MSL: 87.80 feet 15.Distance to Nearest Well Open Surface: x- 612049 s y-59599904'Zone- ASP4 GL Elevation above MSL: 53.50 feet to Same Pool: 1700' 16.Deviated Wells: Kickoff Depth: 300 feet 17.Maximum Anticipated Pressures in psig(see 20 AAC 25.035) Maximum Hole Angle: 74 degrees Downhole: 2456 Surface: 1925 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) 42" 20" 215.5# A-53 WLD 80' Surface_Surface, 80' 80' -260 sx Arctic Set 16" 13-3/8" 68# L-80 BTC 2434' _ 34' 34' 2468' , 2013' 437 bbl Arctic Set Lite;202 bbl Class'G' VeAr 12-1/4" 9-5/8" 40# L-80 BTC 5548' 2284' 1935' . 7832' 3568' , bbl LiteCRETE 94 bbl Class'G' 3•A:it 8-3/4" 7" 26# L-80 TC-II 12657' Surface Surface, 12657', 5400' 89 bbl LiteCRETE:57 bbl Class'G' . 19. PRESENT WELL CONDITION SUMMARY(To be completed for Redrill and Re-entry Operations) Total Depth MD(ft): Total Depth TVD(ft): Plugs(measured): Effective Depth MD(ft): Effective Depth ND(ft): Junk(measured): Casing Length Size Cement Volume MD ND Conductor/Structural Surface Intermediate Production Liner Perforation Depth MD(ft): Perforation Depth ND(ft): 20.Attachments: 0 Property Plat ®BOP Sketch ®Drilling Program 0 Time vs Depth Plot 0 Shallow Hazard Analysis ® Diverter Sketch 0 Seabed Report ®Drilling Fluid Program 0 20 AAC 25.050 Requirements 21. Verbal Approval: Commission Representative: Date: 22. I hereby certify that the foregoing is true and correct. Contact Mel Rixse,564-5620 Printed Name Jo ,; E•be'imba _ Title Engineering Team Leader Prepared By Name/Number: Signature , Phone 564-5859 Date 2-/23/i/ Elizabeth Barker,564-5674 / ` Commission Use Only Permit To Drill AP Number: Permit pr I Date: See cover letter for Number:o?/J 50a?r +flOGUO • `‘ other requirements Conditions of Approval: If box i checked,well may not be used to explore for,test,or produce coal melt ane,gas hydrates,or gas contained shales: iJ ---6- 1- Other: �,: eo� �Qr --M-3- SI C •-� Samples Req'd: 01Yes m No Mud Log Req'd: 0 Yes �No $-ZS6o SL ! `Y n&t / H2S Measures: IYJ Yes 0 No Directional Survey Req'd: M'Yes 0 No 1-4(fiin aper .o j. in Ccc.or., W� 14r'O ZG M i T ceL pe ki.rt...Y Alotfe e&°"4"1‘11) `&°"4 1Jc4-cc'"'viral4 <l(34D/ a° /M c ,237 033!) / ,....._ APPROVED BY THE COMMISSION Date A .,� ,COMMISSIONER Form 10-4 r 1 Revised r 7/2009 This permit is valid for 24 months from the date of approval(20 AAC 25.005(g)) ylibit In u fixate ORIGINAL • by 0 To: Alaska Oil & Gas Conservation Commission From: Mel Rixse, Operations Drilling Engineer Date: February 10, 2011 Re: Prudhoe Bay, Orion - Schrader Bluff- Request for Permit to Drill W-221 A permit to drill is requested for a new grassroots well to be named W-221. The / primary target for the injecting well will be the Polaris Schrader Bluff. The final injection intervals will be the Schrader Bluff 0 Sands. The well will provide a cemented and perforated 7" longstring run to surface. Expected spud date is May 10, 2011. Summary of the process: A conductor will be set pre rig. From the surface conductor, a 16" hole will be drilled to the SV5, where 13-3/8" surface casing will be run and cemented to surface. A 12-1/4" hole will be drilled to the lower SV1 from below the 1373/8" surface casing shoe. A 9-5/8" drilling liner will be run and fully cemented. An 8-3/4" hole will then be drilled to 250' MD beyond the SB OBe marker. A 7" longstring will be run from TD to surface t to Pr duction tubing will be 3-1/2" L-80 tubing with 3 separate injection isolation packers. 3-11/ Please note the following Well Summary as detailed on the next few pages. Sincerely, Mel Rixse Operations Drilling Engineer BP Exploration (Alaska), Inc. W-221 Permit Application Page 1 Well Name: W-221 i Drill and Complete Plan Summary Name Position Office Home Cell Mel Rixse Drilling Engineer 5620 345-2599 223-3605 Doug Wilson Geologist 4517 345-4294 240-4870 Bob Dawson Ops Geologist 5264 345-3359 242-2391 Taylor West Pad Engineer 4647 337-2028 632-0111 Type of Well (service / producer/ injector): Injector Surface Northing Easting Offsets TRS Location 5,959,956 612,049 301' FNL/ 1175' FEL 11N, 12E, 21 Northing Easting TVDss Offsets TRS Lo Taragons et 5,970,010 612,650 -4930 815' FNL /421' FEL 11N, 12E, 9 5,970,434 612,630 -5312 392' FNL /414' FEL 11N, 12E, 9 Bottom Northing Easting TVDss Offsets TRS Location 5,970,434 612,630 -5312 392' FNL /414' FEL 11N, 12E, 9 API NUMBER: NA Rig: Doyon 14 Estimated Start Date: 4/12/2011 Operating Days to complete: 25.9 MD: 12657' TVD: 5400' RT/GL: 34.3'/53.5' RTE: 87.8' Well Design: Grassroots Schrader Bluff Injector 3-1/2" tbg, 9.2# L80, TC-II, multi-packers, zonal injection Objective: Multi-zonal injector into Schrader Bluff OBa, OBc and OBd sands Directional Plan: Version: Schlumberger P12 KOP: 300' MD, build 1.5/100 Maximum Hole Angle: 73.64° Close Approach Wells: All wells pass major risk criteria. Reference anti-collision report Nearest well within Pool 1700' to W-204 toe in Polaris Pool' Distance to Nearest Property 20,620' to PBU boundary Line: W-221 Permit Application Page 2 Wells within 1/4 mile of this injection well: Well Name Dist, Ft. Annulus Integrity Comments NONE Logging Program: Surface Interval Drilling, MWD: GR Open Hole: None Cased Hole: None Intermediate Interval Drilling, MWD: GR Open Hole: N/A Cased Hole: N/A Production Interval Drilling, MWD: GR, RES, NEU,Azimuthal Density PWD Open Hole: None Cased Hole: USIT-GPIT(PDC mode via tractor) Mud Program: 16" Surface Hole: Fresh Water Drilplex Mud DensityFunnel Viscosity LSYP Yield Point API FL 211 (ppg) (seconds) (2x3-6 rpm) (Ib/100ft2) (mis/30min) Spud to Base 8.8—9.5 60-120 (for reference 30—50 40—80 s 8 10.8 Permafrost only. Fluid should be run off LSYP) Base 9.0—9.5 60-120 (for reference 28—45 40—80 s 6 10.8 Permafrost to only. Fluid should be TD run off LSYP) 12 1/4" Intermediate Hole: LSND Interval Density YP PV pH API (ppg) Fluid Loss Shoe to TD 9.0-9.3 25-28 12-18 9- 10 < 8.0 8 3/4" Production Hole: LSND Interval Density YP PV pH API (ppg) Fluid Loss Shoe to TD 8.8-9.3 18-24 12- 18 9- 10 <6.0 W-221 Permit Application Page 3 Casing/Tubing Program: Hole Size OD Wt/Ft Grade Connection Length Top MD/TVD Btm MD/TVD RTE 42" 20" 215.5 A-53 WLD 80' GL 80'/80' 16" 13 3/8" 68 L-80 BTC 2434' GL 2468'/2013' 12 %4" 9'/8' 40 L-80 BTC 5548' 2284'/ 1935' 7832'/3568' 8%" 7" 26 L-80 TC-II 12657' GL 12657'/5400' Tubing 3 '/2" 9.2 L-80 TC-II 12391' GL 12425'/5245' Comments: Tbg crossover to 4 '/2'just below tree Formation Integrity Testing: Test Point Depth Test Type 13-3/8" Surface Casing 20'-50' from shoe LOT Test Point Depth Test Type 9-5/8" Intermediate Liner 20'-50' from shoe LOT Cement Calculations: Surface Casing: Casing Size 13 4/8" Basis: Lead: Open hole volume+350% excess in permafrost. Use Port collar if necessary. Lead TOC: Surface Tail: Open hole volume +350%excess in permafrost and 40% excess below permafrost+ 80' shoe track. Tail TOC: 800' MD from the 13 3/8" casing shoe Total Cement Volume: Lead 437 bbl of Arctic Set Lite 10.7 ppg Tail 202 bbl of Class`G' 15.8 ppg Intermediate Liner: Casing Size 9 5/8" 2 Yk -� 78 3L =7 3ca fs -s Basis: Lead: Open hole volume with 40% excess Lead TOC: 125' above 9 5/8" liner top Tail: Open hole volume 40% excess+ 80' shoe track Tail TOC: 1000' MD above th 9 5 8" liner shoe Total Cement Volume: Lead 17 I of LiteCRYE 11 ppg `2 2.G L BLS Tail 84 bbl of Class`G' 15.8 ppg 3.z- (I Production Casing: Su Casing Size 7" Basis: Lead: Open hole volume with 40%excess Lead TOC: No higher than 1000' MD below 9 5/8" liner shoe Tail: Open hole volume with 40% excess+ 80' shoe track Tail TOC: -450' MD above Mc Total Cement Volume: Lead 89 bbl of LiteCRETE 11 ppg Tail 57 bbl of Class`G' 15.8 ppg W-221 Permit Application Page 4 Formation Markers: Formation Top and Estimated Pore Pressure Predictions NOTE: All standard formation tops are required from GR tie-in point above proposed KOP to TD for sidetracks NOTE: All standard formation tops are required from surface to TD for all new wells NOTE: Formation tops and pressures are required for all fault blocks penetrated and along laterals for horizontal and high-angle wells Tops Based on Well W_221wp12 Plan#: Estimated Estimated Pore Formatio Depth Hydrocarbon pore Pressure Formation n Top Uncertainty Bearing pressure Uncertainty (TVDss) (+/-TVD ft) (Yes/No) (EMW ppg) (EMW+/- PP9) G1 -305 +/-20' No 8.35-8.9 SV6 -1205 +/-20' No 8.35-8.9 EOCU -1760 +/-20' No 8.35-8.9 SV5 -1860 +/-20' No 8.35-8.9 Base Permafrost -1875 +/-20' No 8.35-8.9 SV4 -2020 +/-50' Hydrates 8.35-8.9 SV3 -2590 +/-50' Hydrates 8.35-8.9 SV2 -2800 +/-50' Hydrates 8.35-8.9 +/-150'M.D. -see Fault Section for Fault#1 -3070 Details. SV1 -3120 +/-50' Hydrates 8.35-8.9 UG4 -3510 +/-50' No 8.35-8.9 UG4A -3560 +/-50' 8.35-8.9 +/-200'M.D. -see Fault Section for Fault#2 -3630 Details. UG3 -3650 +/-50' 8.35-8.9 UG1 -4185 +/-50' 8.35-8.9 UG_Ma -4475 +/-50' Yes, heavy oil 8.35-9.1 UG_Mb1 -4530 +/-50' Yes, heavy oil 8.35-9.0 UG_Mb2 -4585 +/-50' Yes, heavy oil 8.35-9.0 UG_Mc / -4680 +/-50' Yes, heavy oil 8.35-9.0 SB Na -4725 +/-25' Yes 8.35-8.95 SB Nb -4755 +/-25' No,wet 8.35-8.8 SB_Nc -4785 +/-25' No 8.35-8.8 SB Ne -4795 +/-25' No 8.35-8.8 SB OA -4880 +/-25' No,wet 8.35-8.73 SB_OBa -4930 +/-25' Yes 7.3-8.4 SB OBb -4970 +/-25' Yes 8.4-8.7 SB OBc -5030 +/-25' Yes 8.0-8.6 SB_OBd -5080 +/-25' Yes 7.0-8.4 SB OBe -5145 +/-25' Yes 8.35-8.6 SB_OBf -5190 +/-25' Yes 8.35-8.6 Base_SB_OBf -5240 +/-25' No 8.35-8.6 T.D. -5307 +/-50' No 8.35-8.6 Comments Pressure estimates based on W-220 Pore Pressure Prediction Nov. 18,2010. Range shown is from Min-Max tables respectively. These also match the range computed for W-202 based on the offset wells. However W-217 OBc shows a abnormally high pressure giving a 9.3 ppg this has not been verified by other Wpad wells which are closer to W-221. W-221 Permit Application Page 5 Well Control: 16" holes will be drilled with diverter. The 12-1/4" intermediate hole will use well control equipment consisting of 5000 psi working pressure pipe rams (2), blind/shear rams, and annular preventer will be installed and is capable of handling maximum potential surface pressures. Annular preventer will be tested to 2500 psi. Rams will be tested to 4000 psi. The BOP test frequency will be conducted on a 14 day frequency, with a function test every 7 days. Except for significant operational issues that may effect well integrity or pose safety concerns, an extension to the 14 day BOP test period should not be requested. Diverter, BOPE and drilling fluid system schematics of Doyon 14 are attached to this permit to drill. Production Interval- • Maximum anticipated BHP: 72456 psi @ 5307' TVD, 8.9 ppg EMW • Maximum surface pressure: A925 psi @ surface (based on BHP and a full column of gas from TD @ 0.10 psi/ft) • Planned BOP test pressure: • Annular Preventer 250 / 2500 psi • Rams 250 / 4000 psi • Planned completion fluid: 9.0 ppg brine / 6.8 ppg diesel Kick Tolerance I Integrity Testing Summary Table Casing and Casing Maximum Influx Mud Exp Pore LOT I Interval Test Volume Weight Press FIT Pressure 133/8" Surface 3500 psi 50 BBLS (assuming 9.2 8.7 LOT Casing 11.0 LOT) 95/8" Intermediate 3500 psi 50 BBLS (assuming 9.2 8.8 LOT Liner 11.0 LOT) 7" Production 4000 psi NA NA NA NA Casing Disposal: • No annular disposal in this well. • Cuttings Handling: Cuttings generated from drilling operations will be hauled to grind and inject at DS-04. • Fluid Handling: Haul all drilling and completion fluids and other Class II wastes to DS- 04 for disposal. Haul all Class I wastes to Pad 3 for disposal. Variance Request: To avoid the risk of plugging the flow line with large rocks and wood encountered while drilling surface hole, it is requested to drill without a flow paddle for the first portion of the surface hole. After drilling past the larger rocks and wood sections, the flow paddle will be put back in the flow line. W-221 Permit Application Page 6 W-221i - Drill and Complete Procedure Summary Pre-Rig Work: The 20" insulated conductor is installed. 1. Weld an FMC landing ring for the FMC slimhole well head on the conductor. 2. If necessary, level the pad and prepare location for rig move. Shut in nearby wells, bleed off process lines, and remove well houses as necessary. Rig Operations: 1. MIRU Doyon 14. Nipple up diverter spool and function test diverter. 2. PU & stand back DP as needed. MU 16" drilling assembly with MWD/GR. Directionally drill surface hole to the base of permafrost. CBU or until hole is clean, then POOH and lay down BHA. 3. Run and cement the 13-3/8", 68.0 lb/ft L-80 surface casing to surface with the Tesco CDS Tool, &. displacing cement with mud. 4. ND diverter spool and NU and test casing/tubing head. NU BOPE and test rams @ 4,000 psi / 250✓ psi, and annular to 2500 psi/250psi. 5. Pressure test the 13-3/8"casing to 3500 psi for 30 minutes. ,- 6. MU 12-1/4" drilling assembly with MWD/GR and RIH to float collar. Drill shoe track and displace to new 9.0 ppg LSND mud. Drill new formation to 20-50' below 13-3/8" shoe and perform LOT. 7. Drill ahead to TD in the SV1. CBU or until hole is clean, then POOH and lay down BHA. 8. Change to 9-5/8" casing rams and test. 9. Run and cement the 9-5/8", 40.0 lb/ft L-80 drilling liner with 150' overlap into the 13-3/8". Set Displace cement with mud and set hanger/liner top packer. POOH. 10. MU 8-3/4" drilling assembly with MWD/GR/Res/Azi-Den/Neu/PWD and RIH to 9-5/8" float collar. Pressure test to 3500 psi for 30 minutes. Drill shoe track and ensure 8.8 ppg LSND mud is in good condition. Drill new formation to 20-50' below 9-5/8" shoe and perform LOT. 11. Drill ahead to production hole TD 250' below the top of OBe. Clean and wipe hole. POOH. 12. Change to 7" rams and test prior to running casing. 13. Run and cement the 7", 26#, L-80, TCII production casing. Displace the casing with 9.0 ppg brine, and pressure test casing to 4,000 psi for 30 minutes at plug bump. Confirm 500 psi cement compressive strength prior to freeze protecting. Freeze protect the 7"x 13-3/8" annulus. 14. PU DPC guns and RIH to shoot 152' of perfs with of 4.5" Power Jet 4505 5 spf, perf guns with - GR/CCL for gun correlation. 15. Once correlated correctly, confirm cement compressive strength is at least 1,000 psi before firing. . Perforate the OBa, OBc, and OBd sands. POOH stand back DP and lay down guns. W-221 Permit Application Page 7 16. Make clean out run using DP. 17. RU Schlumberger E-line. RIH with gauge ring and junk basket on tractor to recover any perf debris. Repeat until clean to at least 50' below the bottom perforation. 18. Run USIT/GPIT log with tractor following Primary Depth Control procedures as USIT log will be • primary depth control for future well work. COL 19. Run the 3-'/2', 9.2#, L-80, TCII completion with a 7" x 3-W straddle packer assembly, I-wire, gauges, and injection mandrels. Torque turn TCII threaded tubing. Top packer must be within 200' of OBa • perfs. Confirm that packers are on depth using E-line. 20. Run in the lockdown screws and set the packers. Give AOGCC 24 hours notice, then test the production casing/tubing annulus and tubing to 4,000 psi each. Shear the DCR shear valve and pump . both ways to confirm circulation ability. 21. Install and test FMC TWC. Nipple down the BOPE. Nipple up and test the tree to 5,000 psi. Pull TWC. 22. Freeze protect the well to 2,500' TVD by pumping corrosion inhibited brine down the IA with rig pumps ., followed by diesel down IA w/ Hot Oil truck, taking clean brine returns to surface. Allow diesel to u- tube into tubing. 23. Install BPV in tubing hanger. Install a VR plug in the 7"x 3-W annulus valve and secure the well. . Assure that IA/OA are protected with two barriers. 24. Rig down and move off. Post-Rig Work: 1. R/U coil tubing and pull ball and rod/RHC from the tailpipe. 2. Replace the DCR shear valve with a dummy GLV. 3. Pull dummy valves in injection mandrels and replace with injection valves. 4. Pump RG2401 on top of surface casing cement. 5. Pull VR plug. 7 6. Install 4 1/16" carbon tree with Baker hydraulic SSV Actuator. 7. Install wellhouse and flowlines. W-221 Permit Application Page 8 Drilling Critical Issues POST THIS NOTICE IN THE DOGHOUSE I. Well Control / Reservoir Pressures: Interval Psi (EMW) TVDss MD Schrader Bluff 1849-2343 4725- 11759- Sands (7.0-8.9) 5240 12657 II. Hydrates and Shallow gas: A. Free gas and/or gas hydrates may likely be present in the SV5 through the SV1 surface hole below the Permafrost base. Use standard operating procedures for hydrates, if encountered. Set surface casing below deepest SV1 sand hydrate zone to isolate gas bearing intervals behind cemented pipe in surface hole from intermediate hole section. III. Running Gravels: A. Unconsolidated sand, gravel, & cobbles and thawing permafrost could impede well angle build and casing running through permafrost. Keep moderate to low build angles until out of permafrost section. Keep flow rates low. Hazards include wood and cobbles, lost circulation, and tight hole problems while drilling and running casing. See W Pad Data Sheet for details. B. Recent W Pad wells have experienced tight hole, running gravels, and lost circulation with drilling and running casing in Permafrost interval. Use best practices for drilling and lining surface hole interval. Base plan is to use the Tesco CDS casing running tool to address this problem for 13- 3/8" casing. IV. Faults Formation Where MD Throw Encounter Fault Intersect tvdss Est. Throw Direction Uncertainty Fault#1 SV2 6405 3070 +40 to+60' North +/- 150' MD -240 to - Fault#2 UG4A 8364 3630 300' West +/-200' MD V. Kick Tolerance/ Integrity Testing: A. The 13 3/8" casing will be cemented to surface using a port collar at 1000' if necessary. The 9 5/8" intermediate liner will be cemented to the top of the 9 5/8" liner. The 7" production casing will be cemented to at least 500' MD above the Ma and no closer than 1000' below 9-5/8" intermediate shoe. Kick Tolerance/ Integrity Testing Summary Table Casing and Casing Maximum Influx Mud Exp Pore LOT/ Interval Test Volume Weight Press FIT Pressure 133/8" Surface 3500 psi 50 BBLS (assuming 9.2 8.7 LOT Casing 11.0 LOT) 95/8" Intermediate 3500 psi 50 BBLS (assuming 9.2 8.8 LOT Liner 11.0 LOT) 7" Production 4000 psi NA NA NA NA Casing W-221 Permit Application Page 9 VI. Lost Circulation / Breathing: A. Lost circulation potential when crossing Fault#1. No faults expected in the reservoir interval. Follow LCM decision tree; reduce mud weight slightly. B. Minor pressure depletion of OBa, OBc, and OBd zones from W Pad Polaris off take. Follow LCM decision tree; reduce mud weight slightly. VII. Broaching A. Monitor adjacent wells for broaching while drilling surface hole. VIII. Heavy Oil A. Heavy oil is expected in the UG4A and M sand intervals which could result in plugging of shaker screens. Follow established operating practices for drilling in heavy oil zones. IX. Hydrogen Sulfide A. All W Pad gas lift wells are expected to have H2S levels in the 5 to 60 ppm range; result of PBU gas lift gas. This site should be treated as an H2S site with all the required precautions. Date of Well Name H2S Level Reading #1 Closest SHL Well H2S Level W-204 8 ppm 8/24/2010 #2 Closest SHL Well H2S Level W-201 20 ppm 8/26/2010 #1 Closest BHL Well H2S Level W-204 8 ppm 8/24/2010 #2 Closest BHL Well H2S Level W-201 20 ppm 8/26/2010 Max. Recorded H2S on Pad/Facility W-01A 60 ppm 8/16/2005 Other Relevant H2S Data (H2S alarms W Pad wells have recorded H2S levels in the range of 2-60 from rigs, etc.) ppm. W-221 Permit Application Page 10 ' S se On C1114. 7011.itHIP4 Fle CINIffd PROPOSED W_221 i SAFETY NOTES: ALV 34.4' BF.ELEV= 54' -' 23 I-14-1/7 X 3-1/2'X0.D=2.992' KOP= 300' MaxAngMe= 74'x2691' Datum MD= 12657' 20'CONDUCTOR — 114' I J 2318' H13-3/8'x 9.5/8'BKR ZXPN LTP/HGR Datum ND= 5312'SS 948,A-55,WELDED, ID=19.124" 4700' I13-3/8'CSG,688.L-80.BTC.ID=12.415' H 2468' I I J3-1/2'RES XMP.ID=2.813' WATER INJECTION MANDRELS ST MD ND DEV TYPE VLV LATCH PORT DATE r9-S/8"LNR,405.L-80,BTC,D=8.835" H7.32. I , 5 MNG-14/4-E 4 WAG—FWD 17"CSG,265,L-80 TC11 XO TO L-80 BTC-M H mow X X 3 MMGMf4-C 2 WAG-RN-8 1 MMGHW-A C7 11987' I—7"X 3-1/2'BKR PREM FEED THRU 3-112'PUP JONT w/RA TAP 12026 PKR D=2.985" 12001' I—I 3-112"NDPG MULTI SIB,ID=2.992' I 7"PUP JONTw/RA TAG— 1 2066' r' Minimum ID=2.75" @ 12415' ET 3-1/2"HES XN NIPPLE p I 12141' I—7"X 31/'BKR PREM FEED THRU PERFORATION SUMMARY PKR ID=2.965' REF LOG LWD LOG CN 5P712011 ANGLE AT TOP PERF:xx"@ xxxx' E _ I 12156' 1-13-1/2'NOPG MULT1 SUB,ID=2.992' I Note:Refer to Production DB for historical pert data 'I SIZE SPF ZCNE NTERVAL Cpn/Sgz DATE 4 4-112" 5 OBa 4-1/2" 5 OBC LI 4-1/2" 5 OBd 1 12305' —7'X 3-1/2'BKR PREM FEED THRU PKR ID=2.965' 1 I I 12319' —131/7 NOM SINGLE SUB,D=2992' I Ci ' ' I 12383' H3-12'HES X NP,D=2.813' 12415' /13.1/2"MEIXNNP•D=2.750' 3112'TEL 9.21.L-80 Tat.0087 bpf.D=2.992' H 12420' I / - - — 1 24 25' H3-12'WLEG.D=2.992' PBTD - 12567' ',,:.:.,74:/, lt,. 7"CSG,268.L-80 BTC..0383 bpf,ID=6.276' H %i 12657' �r�^' •':)'{n& DATE REV BY COMMENTS DATE _REV BY COMMENTS 4TS POLARIS UNIT 12/14/10 MGR PROPOSED COMPLETION WELL:W-221i PERMIT No: AR No: SEC 21,111N,R12E 4979'FSL 6,1175'FEL BP Exploration(Alaska) W-221 Permit Application Page 11 I • N 0 a^ mmM00 WOW,* 0 2mrm ,d qq w- ..... m Q 0,MNQmWN 0 0 0(0 0 NON, m N C0WWONA QNNO ^NA WQ pWNN, ft.... ^0M.. 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W 149 5 33.07E 540.: 012046.96M15 Scala Fact 0.9886142E Plan W-221(P12) Snry Data pacamber 13.2010 -3000 -1500 0 1500 3000 To r Lnr W-221(P12) 10500 , -. 10500 rTarget a(' End Cry Cry 41100 9000 9000 241 F8 2 Sch OA End Cry 7500 c 7500 4rik Cry 3/100 A FKTgt A Flt Tg 4 Fault 1 Z 9-5(8"Cs. - r - x 6000 End Cn 6000 OV W-221 Ftt 1 UG3 1.0O Cry 31100 C II 4) 4500 4500 V V V 3000 3000 1500s End Cry ° 1500 13413"C • Cry 3/100 End Cry • Cry 3.751100 • Cry 3.751100 End Cry Bid 3.751100 KOP Bld 1.51100 Cry 3.75/100 0 0 End Cry RTE -3000 -1500 0 1500 3000 «<< W Scale=1(in):1500(ft) E >>> • BPPASSPORT Anticollision Report Company: North America-ALASKA-BP Local Co-ordinate Reference: Well Plan W-221 Project: Prudhoe Bay TVD Reference: W-221 Planned @ 87.80ft(Doyon 14) Reference Site: PB W Pad MD Reference: W-221 Planned @ 87.80ft(Doyon 14) Site Error: 0.00ft North Reference: True Reference Well: Plan W-221 Survey Calculation Method: Minimum Curvature Well Error: 0.00ft Output errors are at 1.00 sigma Reference Wellbore Plan W-221 Database: EDM.16-ANC Prod-WH24P Reference Design: Plan#12 W-221 Offset ND Reference: Offset Datum Reference Plan#12 W-221 Filter type: GLOBAL FILTER APPLIED:All wellpaths within 200'+100/1000 of refen Interpolation Method: MD Interval 5.00ft Error Model: ISCWSA Depth Range: Unlimited Scan Method: Tray.Cylinder North Results Limited by: Maximum center-center distance of 1,461.54ft Error Surface: Elliptical Conic Survey Tool Program Date 12/13/2010 From To (ft) (ft) Survey(Wellbore) Tool Name Description 34.30 900.00 Plan#12 W-221 (Plan W-221) GYD-GC-SS Gyrodata gyro single shots 900.00 2,468.28 Plan#12 W-221 (Plan W-221) MWD+IFR+MS MWD+IFR+Multi Station 2,468.28 7,831.70 Plan#12 W-221 (Plan W-221) MWD+IFR+MS MWD+IFR+Multi Station 7,831.70 12,649.68 Plan#12 W-221 (Plan W-221) 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 W Pad Plan W-202-Plan W-202 OBd-Plan#7 W-202 0 409.15 410.00 136.21 7.84 128.37 Pass-Major Risk Plan W-202-Plan W-202L1 OBc-Plan#7 W-202 409.15 410.00 136.21 7.84 128.37 Pass-Major Risk Plan W-202-Plan W-202L2 OBa-Plan#7 W-202 409.15 410.00 136.21 7.84 128.37 Pass-Major Risk Plan W-223-Plan W-223-Plan#10 W-223 684.73 690.00 57.27 13.25 44.04 Pass-Major Risk W-200-W-200-W-200 431.81 430.00 185.84 7.78 178.07 Pass-Major Risk W-200-W-200PB1 -W-200PB1 431.81 430.00 185.84 7.94 177.91 Pass-Major Risk W-201-W-201-W-201 380.38 375.00 151.33 6.73 144.60 Pass-Major Risk W-201_DIMS-W-201-W-201 34.60 34.60 150.17 1.23 148.94 Pass-Major Risk W-204-W-204-W-204 360.59 355.00 122.66 7.61 115.05 Pass-Major Risk W-204-W-204L1 -W-204L1 360.59 355.00 122.66 7.61 115.05 Pass-Major Risk W-204-W-204L2-W-204L2 360.59 355.00 122.66 7.61 115.05 Pass-Major Risk W-204-W-204PB1-W-204PB1 360.59 355.00 122.66 7.61 115.05 Pass-Major Risk W-213-W-213-W-213 448.80 445.00 105.26 8.45 96.81 Pass-Major Risk W-214-W-214-W-214 440.27 435.00 91.69 8.91 82.78 Pass-Major Risk W-214_DIMS-W-214-W-214 34.40 34.40 90.00 1.23 88.77 Pass-Major Risk W-216-W-216-W-216 692.60 695.00 67.59 13.87 53.79 Pass-Major Risk W-216_DIMS-W-216-W-216 87.80 87.80 75.36 1.88 73.48 Pass-Major Risk W-217-W-217-W-217 573.72 570.00 28.36 9.92 18.49 Pass-Major Risk W-217-W-217PB1 -W-217PB1 573.72 570.00 28.36 10.03 18.39 Pass-Major Risk W-217_DIMS-W-217-W-217 87.80 87.80 30.33 1.88 28.45 Pass-Major Risk W-217_DIMS-W-217PB1 -W-217 PB1 87.80 87.80 30.33 1.88 28.45 Pass-Major Risk W-218-W-218-W-218 350.78 345.00 14.52 6.34 8.22 Pass-Major Risk W-218_DIMS-W-218-W-218 87.80 87.80 15.32 1.88 13.44 Pass-Major Risk W-219-W-219-W-219 481.60 485.00 168.95 9.22 159.73 Pass-Major Risk W-219-W-219PB1 -W-219PB1 481.60 485.00 168.95 9.33 159.62 Pass-Major Risk W-219-W-219PB2-W-219PB2 481.60 485.00 168.95 9.22 159.73 Pass-Major Risk W-220-DELETE!!!-W-220PB1 34.40 34.40 45.16 1.23 43.94 Pass-Major Risk W-220-W-220-W-220 434.62 435.00 48.38 7.90 40.49 Pass-Major Risk W-220-W-220-W-220 Cont wp 1.0 434.62 435.00 48.38 7.90 40.49 Pass-Major Risk W-220-W-220 Pb2-W-220 PB2 434.62 435.00 48.38 7.79 40.60 Pass-Major Risk W-220-W-220PB1 -W-220PB1 434.62 435.00 48.38 7.90 40.49 Pass-Major Risk W-24-W-24-W-24 432.04 430.00 221.16 7.65 213.51 Pass-Major Risk 12/13/2010 2:11:53PM Page 2 of 3 COMPASS 2003.16 Build 73 Project: Prudhoe Bay Site: PB W Pad Well: Plan W-221 Wellbore: Plan W-221 Design: Plan #12 W-221 From Surface to TQ Scan interval 100 tt Scale 1 : 50 All wells pass Major Risk 0 1 330 30 1-i i2 QUO 300 60 —7 / 270 700 90 2_ ) ?°8 5O440J3Qc g.6 '!VV-218 DIMS/VV-218/ .>.T 799 700 _\ '5./ \ \ \ 993 / ,W-217 CMS/W-217 PB1 loss f`, $ 22i,,,// SX8 886 \ / �' 71-21e' MS W-2f6 240 -21&W-218 '�3\ lea . 1 W-2 14 2 •••1` 21 / 120 �F_ 475 13��..,,,„.„,,,,...,,,,,,,,...7:r„.„. '7Y-T 1 . 9667 X595 5'54 1547 � 1262 1. LF 37 f , W-2131!- 1� '2 li. 598 , -- 12'1 / ! , 68g • . W-2201W-220 PB2 wp 1.03 � � W-201_DIMS/W-� — .• x. 210 174 / - _i'.`':_ 150 W-217tW- 7PB1.- 59 "cui f^f `•?1s W-2191W-219P62'08a 180 Travelling Cylinder Azimuth (TFO+AZI)[=j vs Centre to Centre Separation [50 ft/inj Target-W.221 Tat SSchr PropPrudhoe Bay Well:Plan W.221 fling Tager Cont.:95 Based Planned Program Plun n12 W.221 1k:ter:Him Vcrncal Depth 3017.80 tt Selo.W.221 Planned Map Norlhong.3970010 00 tt Local 10044.0011 Map Easting 612050000 Local 750.94 It Lunn&70.19 17.14S!,1 Longitutkg 149.3'11.157 W Shape:Polygon 6 point. •—• e-•—• 0 I+0 ....... 3C -2C , / •—e L . . r I L 9.4 cunt Rcr-ND •-• _ • R810 ti ) o L ) ) ) ) ) o 9 110 ) d 1!a ... 0.'0, ' 1 i tR 2F..- 142, 6 aZg enCI.m 8'488Ns:.^YRAA .,,,, Y.Nr{u5IwA;163 1 L7 mLTa � '- ii- cvr+;ai4.i4Sricivcir cJs3epitInri ' S? 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' g cn CD -- 7..----717s_ • umiliw. . izt v. c., 0 0 _ CO C 10 M 4 O O tD (D NCO d r L ■ u) ; 0100 I III 81 CU cn 2 , UN I o m O 0 CO iliaUU � 'L C7I m� m1 cu m Cl) Cl) O a Page 1 of 2 Schwartz, Guy L (DOA) From: Rixse, Mel G [Mel.Rixse@bp.comj Sent: Wednesday, March 02, 2011 9:12 AM To: Schwartz, Guy L(DOA) Subject: RE: W-221 (PTD 211-029) Guy, You are correct. I did not copy the correct number for my 9-5/8" cement volume calculations onto the PTD. I have the following corrected calculations: (Please note the variable weight of the sack weight for the cement sack calculations of 94#and 100#) 9-5/8" 15.8 ppg Tail: 80' of tail in 9-5/8" shoe track: 80' x ((8.681^2)/1029.4) = 5.9 bbl 1000' of tail in 9-5/8" annulus assuming 40%washout: 1.4 x 1000' x [ (((12.25)^2) - ((9.625)^2)) / 1029.4)] = 78.1 bbl Tail Total = 5.9 + 78.1 = 84 bbl of 15.8 ppg cement with yield 1.16 cu.ft. /94#sk or 405 94#sks 9-5/8" 11.0 ppg Lead: Annulus of OH 1000' above 9-5/8" shoe is 6832' MD 12-1/4" shoe is 2468' MD Assume 40% excess for washout 1.4 x (6832' -2468') x [ (((12.25) ^2) - ((9.625)^2))/ 1029.4)] = 341 bbl <- corrected Liner lap of 12-1/4" x 9-5/8" 150' + 50' additional 200' x [ (((12.415)^2) - ((9.625)^2))/ 1029.4 )] = 12 bbl Lead Total 341 bbl + 12 bbl = 353 bbl of 11.0cement with yield 1.84 cu.ft. / 100#sk or 1077 100#sks ppg Total cement volume for 9-5/8" : 84 bbl + 353 bbl 437 bbls. For the Surface Casing Cement Volume: Lead: 437 bbls of 10.7 ppg Lead with yield of 2.33 cu.ft/sk or 1054.5 100#sks Tail: 202 bbls of 15.8 ppg Tail with yield of 1.16 cu ft/ sk or 977 94#sks For Production Casing Cement Volume: Lead: 89 bbls of 11.0 ppg Lead with yield of 3.41 cu ft/94#sk or 146 sks Tail: 57 bbls of 15.8 ppg Tail with yield of 1.17 cu ft/94#sk or 275 sks Mel Rixse Drilling Engineer 3/2/2011 Page 2 of 2 BP Exploration Alaska, Inc. email: mel.rixse@bp.corn Text Message 9072233605@txt.att.net (907)564-5620- Office (907)223-3605- Cell From: Schwartz, Guy L (DOA) [mailto:guy.schwartz@alaska.gov] Sent: Tuesday, March 01, 2011 1:11 PM To: Rixse, Mel G Subject: W-221 (PTD 211-029) Mel, In reviewing the PTD my cement calculations do not match what you have listed. I get 309 bbls required for cementing in with no excess (262 is what you plan on pumping. ) . Could you send me more details on the cementing volumes especially the sacks and cf/sack info for the other casing jobs also. Regards, Guy Schwartz Senior Petroleum Engineer AOGCC 793-1226 (office) 444-3433 (cell) 3/2/2011 Alaska Department of Natural Resources Land Administration System Page 1 of 4 Alaska Mapper Land Records/Status Plats Recorder's Search State Cabins Natural Resources I find e Alaska DNR Case Summary File Type: ADL File Number: 28261 g Printable Case File Summary See Township,Range,Section and Acreage? C New Search C Yes O No LAS Menu I Case Abstract I Case Detail I Land Abstract File: ADL 28261 '°! Search for Status Plat Updates As of 02/28/2011 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: 08/11/1965 Total Acres: 2560.000 Date Initiated:05/28/1965 Office of Primary Responsibility:DOG DIV OIL AND GAS Last Transaction Date: 12/04/2006 Case Subtype: NS NORTH SLOPE Last Transaction:AA-NRB ASSIGNMENT APPROVED Meridian: U Township: O11N Range: 012E Section: 03 Section Acres:640 Search Plats Meridian: U Township: O11N Range: 012E Section: 04 Section Acres:640 Meridian: U Township: O11N Range: 012E Section: 09 Section Acres:640 Meridian: U Township: O11N Range: 012E Section: 10 Section Acres:640 Legal Description 05-28-1965 ***SALE NOTICE LEGAL DESCRIPTION*** C14-5611N 12E UM 3,4,9,10 2560.00 04-01-1977***UNITIZED LEGAL DESCRIPTION*** PRUDHOE BAY UNIT TRACT 48 T. 11N.,R12E., U.M. SECTION 3:ALL, 640 ACRES; SECTION 4:ALL, 640 ACRES; SECTION 9:ALL, 640 ACRES; SECTION 10:ALL, 640 ACRES. http://dnr.alaska.gov/projects/las/Case Summary.cfin?FileType=ADL&FileNumber=2826... 2/28/2011 O O O O O 0o M O ..... O • O O o N- . N. mt Ll T.- o Ce L1J a ,- c,,N C. Cil O O 0 • O E O O I N co ^ ' O O N o e- G) O XO LU O O L O CD LO NM Cr Q Q 0- O W O O O O O O O O O O O O O O O O O O O O O O O 1-0 CD In CD LO O O 0) 0) 00 CD CO LU LU LU Alaska Department of Natural Resources Land Administration System Page 1 of/3'1 Alaska Mapper Land Records/Status Plats Recorder's Search State Cabins Natural Resources ; find Alaska DNR Case Summary File Type: ADL File Number: 28263 g Printable Case File Summary See Township,Range,Section and Acreage? ® Yes 0 No New Search LAS Menu l Case Abstract I Case Detail l Land Abstract File: ADL 28263 'IaN_ Search for Status Plat Updates As of 02/28/2011 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: 08/11/1965 Total Acres: 2560.000 Date Initiated:05/28/1965 Office of Primary Responsibility:DOG DIV OIL AND GAS Last Transaction Date: 10/06/2009 Case Subtype: NS NORTH SLOPE Last Transaction:CHNGTEXT CHANGE LEGAL TEXT Meridian: U Township: 01IN Range: 012E Section: 15 Section Acres:640 Search Plats Meridian: U Township: 01 IN Range: 012E Section: 16 Section Acres:640 Meridian: U Township: 011N Range: 012E Section: 21 Section Acres:640 Meridian: U Township: 011N Range: 012E Section: 22 Section Acres:640 Legal Description 05-28-1965 ***SALE NOTICE LEGAL DESCRIPTION*** C14-59 T11N,R12E,UM 15, 16,21,22 2560.00 11-28-1969 SEGMENT 1 T11N,R12E,UM SECTION 15:640 ACRES SECTION 16:640 ACRES CONTAINING 1280 ACRES,MORE OR LESS. SEGMENT 2-LANDS ASSIGNED T11N,R12E,UM SECTION 21:640 ACRES SECTION 22:640 ACRES CONTAINING 1280 ACRES,MORE OR LESS. 04-01-1977 ****UNITIZED AND LEASE LEGAL DESCRIPTION************ ENTIRE LEASE COMMITTED TO PRUDHOE BAY UNIT PRUDHOE BAY UNIT TRACT 55 T. 11 N.,R. 12 E.,UMIAT MERIDIAN,ALASKA http://dnr.alaska.gov/projects/las/Case Summary.cftn?FileType=ADL&FileNumber=2826... 2/28/2011 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 .Civ 14'do?/ PTD# ,2// Development ✓ Service Exploratory Stratigraphic Test Non-Conventional-Wye"ll FIELD: /�•e!/d.4/OE'Z4/ POOL: ©,C Circle Appropriate Letter/Paragraphs to be Included in Transmittal Letter CHECK ADD-ONS WHAT (OPTIONS) TEXT FOR APPROVAL LETTER APPLIES MULTI LATERAL The permit is for a new wellbore segment of existing well (If last two digits in Permit No. ,API No. 50- - - API number are between 60-69) Production should continue to be reported as a function of the original API number stated above. PILOT HOLE In accordance with 20 AAC 25.005(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. 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