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~ # Im~~~ ~'r~ajec~ 1/1~~11 ~-~i~tQr'a"` Fii ~c~~r~IF f~~~~ xl~vzl~ Tl~lis page identifies those items that were not scanned during the initial production scanning phase. They are available in the original file, may be scanned during a special rescan activity or are viewable by direct inspection of the file. r~ ~ ~ - ~ ~ ~ Well History File Identifier Organizing (done) Two-sided III II'III II III II III ^ Rescan Needed III II~III II II III III RE CAN DIGITAL DATA OVERSIZED (Scannable) Color Items: ~ kettes, No. ~ ^ Maps: ^ Greyscale Items: Other, No/Type: ~~ ~ ®~ ^ Other Items Scannable by a Large Scanner ^ Poor Quality Originals: OVERSIZED (Non-Scannable) ^ Other: ^ Logs of various kinds: NOTES: ^ Other:: BY: Maria Date: / ~ /s/ Protect Proofing III IIIIIIII111 IIIII BY: Maria Date: ` /s/ Scanning Preparation ~ x 30 = _1 ~~ + ~ =TOTAL PAGES ~-----~, r ~~, ~ ~~ (Count does not i~s~ude cover sheet) ~" BY: l Maria ~' Date: 1 Production Scanning Stage 1 Page Count from Scanned File: _~~ (Count does include cover sheet) Page Count Matches Number in Scanning Preparation: ~ES _ BY: Maria Date: ~ ~ ~,~ ~ `< I Stage 1 If NO in stage 1, page(s) discrepancies were /found: YES BY: Maria Date: Scanning is complete at this point unless rescanning is required. NO /s/ In /~ NO~ iiiumiiiiiiuii R.=~.~~ed iuiauuiiwiiu BY: Maria Date: /s/ Comments about this file: Quality Checked III II'II) III II'I I) 10/6/2005 Well History File Cover Page.doc 0. Schlumberger No. 5748 Alaska Data & Consulting Services Company: State of Alaska 2525 Gambell Street, Suite 400 Alaska 00 & Gas Cons Comm Anchorage, AK 99503 -2838 Attn: Christine Shartzer ATTN: Beth 333 West 7th Ave, Suite 100 . Anchorage, AK 99501 Well Job # Log Description Date BL Color CD 02 -12C BCRD -00105 SCMT 5/6/2015 1 1 C -22A BL65 -00022 MEMORY PPROF WI GHOST 3/7/2015 1 1 MPE -28 BCRJ -00085 CEMENT BOND LOG 5114/2015 1 1 H -22A BL65-00028 MEMORY PPROF W/ DEFT 5/8/2015 1 1 C -02 AWJI -00136 PPROF W/ GHOST 3/28/2015 _ 1 1 2 i - (7 Z Z -112 BD88 -00093 MEMORY PPROF WI DEFT 3/29/2015 1 1 I Y ? 6 M 0 PH -10 AV1P -00087 USIT 4/21/2015 1 1 06 -16 BCRD - 00090 RST _ 3/9/2015 _ 1 - 1 S -128 BCZ2 -00035 CH EDIT (USIT) 113/2015 1 A -39A BL65 -00018 CH EDIT (PDC -GR) 2/4/2015 1 E -356 BHGR -00003 OH (FLEX EDIT 12/03/10 1 1 9 PLEASE ACKNOWLEDGE RECEIPT BY SIGNING AND RETURNING ONE COPY EACH TO: BP Exploration (Alaska) Inc Alaska Data & Consulting Services Petrotechnical Data Center LR2 -1 2525 Gambell Street, Suite 400 900 E Benson Blvd Anchorage, AK 99503 -2838 ' .,'t. ;.k Nek S E P z / 'VI :i .. r..,. w ';:, iii PI a7 aotu 04/18/11 Sehhaaherger NO. 5719 Alaska Data & Consulting Services J Comp State of Alaska 2525 Gambell Street, Suite 400 �I-� / — 1 Alaska Oil & Gas Cons Comm Anchorage, AK 99503 -2838 v / !t Attn: Christine Shartzer ATTN: Beth 333 West 7th Ave, Suite 100 Anchorage, AK 99501 Well Job # Log Description Date BL Color CD 01 -16 BCRD -00092 PRODUCTION PROFILE 1 7 [ ' on If 03/11/11 1 / - 1 14-12 BBKA -00091 PRODUCTION PROFILE / (} 4 03/05/11 1 ! 1 Z -02A BJOH -00013 INJECTION PROFILE V Z',L (,� f _/3 03/14/11 1 4 1 13 -09 BDAD -00038 LDL ()IC /*/— 03/19/11 1 1 L5 -36 BJOH -00014 PRODUCTION PROFILE — 6 (0 03/16111 1 1 L4.15 BBSK -00059 PRODUCTION PROFILE . n 03/16/11 1 1 7....")) 03 -25A BG4H -00042 PRODUCTION PROFILE j - _ 03/18/11 1 1 Z -112 BL65-00021 MEM PROD PROFILE _ 03/01/11 1 1 F -35 BG4H -00037 RST - C . 02123/11 1 1 J -17C BAUJ -00061 , MCNL 5--tit . 02109/11 1 _ 1 PLEASE ACKNOWLEDGE RECEIPT BY SIGNING AND RETURNING ONE COPY EACH TO: BP Exploration (Alaska) Inc. Alaska Data & Consulting Services Petrotechnical Data Center LR2 -1 2525 Gambell Street, Suite 400 900 E. Benson Blvd. Anchorage, AK 99503 -2838 4 • REcENED APR 19 20U .. kdorage _,b.,.~ ,. ,, MICROFILMED 6/30/2010. DO NOT PLACE ANY NEW MATERIAL UNDER. THIS PAGE C:\temp\Temporary Internet Files\OLK9\Microfilm_Marker.doc ~ BP Exploration (Alaska) Inc. Attn: Well Integrity Coordinator, PRB-20 Post Office Box 196612 Anchorage, Alaska 99519-6612 August 14, 2009 ,~l ~r ~` ;~.~~ ~ ~ ~ r~!} ri¢'a e`~'~'e.~'9,.~~~u .wk - ~..UtJv" • bp ~GdaG! Y ~6~' Mr. Tom Maunder OCT 0 5 20Q9 Alaska Oil and Gas Conservation Commission ~~~~ Oi1 & Gas Cons. Cot~i~Rian 333 West 7th Avenue Anchora~~ Anchorage, Alaska 99501 ~} ~ ~ ~- Subject: Corrosion Inhibitor Treatments of GPB Z-Pad OC~~ z,' ~~ ~ a- Dear Mr. Maunder, Enclosed please find multiple copies of a spreadsheet with a list of wells from GPB Z- Pad that were treated with corrosion inhibitor in the surface casing by conductor annulus. The corrosion inhibitor is engineered to prevent water from entering the annular space and causing external corrosion that could result in a surface casing leak to atmosphere. The attached spreadsheet represents the well name, API and PTD numbers, top of cement depth prior to filling and volumes of corrosion inhibitor used in each conductor. As per previous agreement with the AOGCC, this letter and spreadsheet serve as notification that the treatments took place and meet the requirements of form 10-404, Report of Sundry Operations. If you require any additional information, please contact me or my alternate, Anna Dube, at 659-5102. Sincerely, Torin Roschinger BPXA, Well Integrity Coordinator ~~ ~ BP Exploration (Alaska ) Inc. Surface Casing by Conductor Annulus Cement, Corrosion inhibitor, Sealant Top-off Report of Sundry Operations (10-404) Date Z-Pad 8/13/2009 Well Name PTD # API # Initial top of cement Vol. of cement um ed Final top of cement Cement top off date Corrosion inhibitor Corrosion inhibitor/ sealant date ft bbls ft na al Z-016 2081080 50029218300200 NA 0.2 NA 3.40 7/24/2009 Z-02A 1960430 50029218140100 NA 0.4 NA 3.40 7/24/2009 Z-03 1971310 50029227870000 NA 1.3 NA 11.90 7/24/2009 Z-04A 2042300 50029219900t00 NA 1.5 NA 14.50 7/24/2009 Z-OS 1900780 50029220560000 NA 1 NA 8.50 7/24/2009 Z-O6 1880320 50029217980000 NA 0.1 NA 1.70 7/24/2009 Z-07A 1931100 50029220460100 NA 2 NA 17.00 7/24/2009 Z-OSA 1931280 50029217870100 NA 0.2 NA 2.55 7/24/2009 Z-09A 2081410 50029219670100 NA 0.2 NA 1.70 7/24/2009 Z-10 1891160 50029219860000 NA 1.3 NA 11.10 7/24/2009 Z-1tA 2050310 50029220530100 NA 0.2 NA 1.70 7/26/2009 z-12 1891020 5oo2s21 sn00oo NA 1.2 NA 6.50 7/26/200s Z-13A 2042030 50029220690100 NA 3.6 NA 24.66 7/26/2009 Z-146 2060990 50029218440200 NA 0.2 NA 1.70 7/26/2009 Z-15 1880880 50029218490000 NA 0.2 NA 1.70 7/26/2009 Z-is 1920120 50029222450000 NA 0.3 NA 2.55 7/26/2009 Z-17 1891390 50029220010000 NA 3.7 NA 34.00 7/26/2009 Z-18 1890960 50029219710000 NA 02 NA 1.70 7/26/2009 Z-19A 2061050 50029222510100 NA 0.2 NA 1.70 7/26/2009 Z-20 1881000 50029218590000 NA 02 NA 1.70 7/26/2009 Z-21A 2001010 50029219380100 NA 0.2 NA 1.70 7/23/2009 Z-228 1960350 50029220370200 NA 0.5 NA 5.10 7/23/2009 Z-23B 2041080 50029219500200 NA 0.3 NA 1.70 7/23/2009 Z-24 1890180 50029219170000 NA 0.3 NA 2.55 7/23/2009 Z-25 1881590 50029219020000 NA 0.2 NA 1.70 7/23/2009 Z-26A 2060790 50029219450100 NA 0.3 NA 3.40 7/23/2009 Z-27 1900310 50029220220000 NA 0.2 NA 2.55 7/25/2009 Z-28 1881270 50029218790000 NA 0.2 NA 1.70 7/25/2009 Z-29 1890650 50029219540000 NA 0.2 NA 1.70 7/25/2009 Z-30A 2032190 50029220130100 NA 02 NA 3.40 7/25/2009 Z-31 1881120 50029218710000 NA 0.3 NA 3.40 7/26/2009 Z-32BL1 1970350 50029219246000 NA 02 NA 1.70 7/25/2009 Z-33A 1890050 50029218950100 NA 0.5 NA 3.40 8/8/2009 Z-35 1980930 50029228840000 NA 1.3 NA 11.50 7/4/2009 Z-38 1980600 50029228730000 NA 1.2 NA 11.90 7/26/2009 Z-39A 2042240 50029229950100 NA 3.8 NA 39.90 7/25/2009 Z-46A 2052030 50029232800100 NA 1.7 NA 13.60 7/26/2009 Z-100 2031710 50029231820000 NA 5 NA 45.90 7/23/2009 Z-101 2001620 50029229780000 NA 1 NA 10.20 7/23/2009 Z-102 2070500 50029233530000 NA 1.5 NA 15.30 7/25/2009 Z-103 2042290 50029232350000 NA 1.5 NA 10.20 7/25/2009 Z-108 2052010 50029232920000 NA 1.5 NA 11.90 7/24/2009 Z-112 2071720 50029233800000 NA surface NA ~chl~u~nber~~r N0. 5297 ~Alaska Daea & Consultin Services ;~~' `~"~'° ~~~~ ~"' ~ ~i ~a~ ` L` ~ `~ 4' ~f 9 Company: State of Alaska ~525 Gambell Street, Suite 40o Alaska Oil & Gas Cons Comm ldnchorage, AK 99503-2838 Attn: Christine Mahnk2n ~,TTIV: eeth 333 West 7th Ave, Suite 100 Anchorage, AK 99501 lNell Job # Log Description Date BL Color CD 07/06/09 Z-06 AYTO-00035 GLS/PRODUCTION PROFILE - 05/12/09 1 1 07-338 B4C4-00003 SCMT 05/30/09 1 1 17-14 AVY5-00049 PRODUC ION PRO ILE ~/- 05/31/09 1 1 92-01 AYTU-00039 PRODUCTION PROFILE 06/01/09 1 1 04-43 AXWS-00011 IBP/CROSS FLOW CHECK - '} 06/0?J09 1 1 D-13E! B04C-00059 USIT 06/03/09 1 1 Z-112 B2WY-00011 MEM PROD PROFILE 06/03/09 1 1 O6-OS B04C-00061 USIT 06/04/09 1 1 12-1~ AViH-00014 PRODUCTION PROFILE ~~'Z 06/04J09 1 1 ~-35 AY3J-00026 _ USIT V a(p ~ O6/04/09 1 1 12-22 AXWS-00013 PROD PROF/GLS 06/05/09 1 1 12-16A AXWS-00014 PRODUCTION PROFILE -/ 06/05/09 1 1 18-29B B04C-00062 PSP XY-CALIPER LOG 06/O6/09 1 1 C-12Da AXWS-00015 SCMT ~- ~ O6/06/09 1 1 ~-27A AXBD-00028 MEM PROD PROFILE 06/11/09 1 1 L2-13A AWJI-00036 MEM CNL & INJ PROFILE ~ O6/17/09 1 1 L2-93m AWJI-00036 MEM PROD PROFILE ~ ~ 06/17/09 1 1 07-21 614B-00064 LDL O6/20/09 1 1 17-01A AY~Q-00030 SBHP SURVEY " 06/11/09 1 1 01-25 AP3~-00041 LDL 06/15/09 1 1 L-202 82WY-00010 MEM PROD PROFILE ~- C,/ O6l02/09 1 1 ~-103 AXBD-00027 MEM INJ PROF(LE 06/04l09 1 1 GNI-03 AWJI-00034 MEM PRESS & TEMP SURVEY ~'~-.- 06/15/09 1 1 G-31~ AWJI-00027 MCNL _03 04/30/09 1 1 15-296PB1 osAKno~a3 OH MWD/LWD EDIT - ~ Gd ~ 05/11/09 2 1 rLtNat w~nroVwLtUtat nt~t1Y1 tslr JftiNlrvl9 ArvU HtIUHNING ONE GUPY EAGM ~V: BP Exploration (Alaska) Inc. Petrotechnical Data Center LR2-t 900 E. Benson Blvd. Alaska Data & Consulting Services 2525 Gambell Street, Suite 400 Anchorage, AK 99503-2838 ~ ~ ~~ 0 , 1 j 'i ~ DATA SUBMITTAL COMPLIANCE REPORT 1 /7/2009 Permit to Drill 2071720 Well Name/No. PRUDHOE BAY UN BORE Z-112 Operator BP EXPLORATION (ALASKA) INC API No. 50-029-23380-00-00 ' w MD 13600 TVD 6707 Completion Date 2/21/2008 Completion Status 1-OIL Current Status 1-OIL UIC N REQUIRED INFORMATION ~~ Mud Log No Samples No DATA INFORMATION Types Electric or Other Logs Run: Gyro, MWD, GR, RES, PWD, AZI-DENS, NEU, SONIC, ABI, AZM-DE Well Log Information: Log/ Electr Data Digital Dataset Ty - Med/Frmt Number Name D C Exc Directional Survey D Asc Directional Survey GKpt Directional Survey ~ D D Asc Directional Survey // FZpt Directional Survey D Asc Directional Survey ',apt Directional Survey Induction/Resistivity og Induction/Resistivity C Lis 16329 Induction/Resistivity ~ !/ED C Lis 16113 "Induction/Resistivity / ~ ~ og Induction/Resistivity L ti I d /R i ti it og n uc on v y es s !ED C Lis 16330~nduction/Resistivity /Log Induction/Resistivity Log Log Run Scale Media No 25 Blu 25 Blu 25 Blu 25 Blu 25 Blu Directional Survey (data taken from Logs Portion of Master Well Data Maint Interval OH / Start Stop H Received Comments ----- 0 ------- 1000 p _ - O en . 2/8/2008 j 0 13600 Open 3/17/2008 0 13600 Open 3/17/2008 0 8050 Open 2/20/2008 PB 1 0 8050 Open 2/20/2008 PB 1 0 11441 Open 3/17/2008 PB 2 0 11441 Open 3/17/2008 PB 2 100 7993 Open 4/10/2008 PB1 MD Vision Service Final 29-Jan-2008 100 7993 Open 4/10/2008 P81 TVD Vision Service ~, Final29-Jan-2008 ~' 46 11435 Open 5/23/2008 PB2 LIS Veri, GR, ROP, FET, RPX, RPS, RPM, RPD, RAM, DRHO, NPHI i 46 8049 Open 4/10/2008 P61 LIS Veri, GR, Rop, ~~ Fet, RPM ,RAM, DRHO, NPHI 108 11441 Open 5/23/2008 PB2 TVD Vision Service j Final 11-Feb2008 108 11441 Open 5/23/2008 PB2 MD Vision Service Final 1l-Feb2008 46 13593 Open 5/23/2008 LIS Veri, GR, ROP, FET, RPX, RPS, RPM, RPD, RAM, DRHO, NPHI ~, 108 13600 Open 5/23/2008 TVD Vision Service Final 15-Feb2008 DATA SUBMITTAL COMPLIANCE REPORT 1 /7/2009 Permit to Drill 2071720 Well Name/No. PRUDHOE BAY UN BORE Z-112 Operator BP EXPLORATION (ALASKA) INC API No. 50-029-23380-00-00 MD 13600 TVD 6707 Completio~te 2/21/2008 Completion Status 1-OIL Current Status 1-OIL UIC N Induction/Resistivity 25 Blu 108 13600 Open 5/23/2008 MD Vision Service Final 15-', ', Feb2008 ' Well Cores/Samples Information: Sample Interval Set Name Start Stop Sent Received Number Comments ADDITIONAL INFORMATION Well Cored? YS~t Daily History Received? ~ N Chips Received? cX-~-N-- Formation Tops ~ N Analysis Y`/-~ Received? Comments: Compliance Reviewed By: ___ __ Date: __ ~ ~?.~ -~F1~~ - - r 05/13/08 Schlumbergr Alaska Data & Consulting Services 2525 Gambell Street, Suite 400 Anchorage, AK 99503-2838 ATTN: Beth wPu _i~ti ~ NO.4702 Company: State of Alaska Alaska Oil & Gas Cons Comm Attn: Christine Mahnken 333 West 7th Ave, Suite i(IO Anchorage, AK 99501 MPS-11 12017492 CEMENT & CORROSION LOG ~~~-/ ~~ ~ 04/22/08 v ivy 1u 1-21/K-25 12061694 PRODUCTION LOG ~/j ~.vU ~ ,~~ 04/18/08 1 1 GNI-04 12057606 STEP RATE INJECTIVI'i r 1 t51 V~ / 33Cf 04/23/08 1 1 L-220 11975763 USIT 04/22/08 1 1 MPS-31 11962598 USIT ~ 05/03/08 1 1 X-17 12034894 USIT - / • ~(o ~~ 05/03/08 1 1 04-47 11978458 MEM LDL ~9L(-~ 3 05/01/08 1 1 Y-07A 11966254 TEMP & PRESS LOG aV'~-- ~ 05/02/08 1 1 L5-36 11975768 PRODUCTION PROFILE W/FSI .-U , 04/28/08 1 1 Z-112 40016350 OH MWD/LWD EDIT '~-- 02/15/08 2 1 Z-112 PB 40016350 OH MWD/LWD EDIT p'~- ~~ 02/11/08 2 1 Y-07A 11962781 CH EDIT PDC GR ISCMT) ~~ /O~ `(p~~~-( 02/03/08 1 L2-16 11975760 RST ~~~ (~y_}_-~~~~ ~~ ~y~~ 03/31/08 1 1 L2-33 11998999 RST r - 04/01/08 1 1 L1-14 11999000 RST ~ ,_ 04/02/08 1 1 D-266 40016518 OH MWD/LWD EDIT S 02/21/08 1 1 of Coca nrir~rn~nn Clll~C ~G f+G1IlT DV [~1l~w~ lwln w BP Exploration (Alaska) Inc. .~ - - - -.-•-..-_ --.-_ .,_. _..._.._w ....w. vv, ' ~^v~ ~ ~ v. Petrotechnical Data Center LR2-1 900 E. Benson Blvd. '' Anchorage, Alaska 99508 ~" `~ Date Delivered Alaska Data & Consulting Services 2525 Gambell Street, Suite 40 , Anchorage, AK 99503-2838 / ATTN: Beth i Received by: CJ ~l0 tl~ill~~m~~i~~ Alaska Data & Consulting Services 2525 Gambell Street, Suite 400 Anchorage, AK 99503-2838 ATTN: Beth _~y. NO. 4645 Company; State of Alaska Alaska Oii & Gas Cons Comm Attn: Christine Mahnken 333 West 7th Ave, Suite 100 Anchorage, AK 99501 Field: P.Bay,Endicott,Borealis 03/28/08 wen. goo s ~o uescn uon uate tst_ coror cu V-220 12031459 USIT (~ ( 03/07/08 1 1 N-14A 12066514 RST 03/15/08 1 1 Z-112PB1 40016350 OH MWD/LWD EDIT 7t,'~_ )~-^S / tt "~ 01/29/08 2 1 r PLEASE ACKNOWLEDGE RECEIPT BV SIGNING AND RETURNING ONE COPY EACH TOc BP Exploration (Alaska) Inc. Petrotechnical Data Center LR2-1 900 E. Benson Blvd. Anchorage, Alaska 99508 Date Delivered: ,~, ~(~„ is .. Alaska Data & Consulting Servic 2525 Gambell Street, Suite 4 Anchorage, AK 5~3-2838 ATTN: Beth Received by: -~S e' STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION WELL COMPLETION OR RECOMPLETION REPORT AND LOG 1 a. Well Status: ®Oil ^ Gas ^ Plugged ^ Abandoned ^ Suspended zoAAC 2s.,os 2oAac zs.,,o ^ GINJ ^ WINJ ^ WDSPL ^ WAG ^ Other No. of Completions One 1 b. Well ClassA~ChQt~q@ ®Development tJ'Exploratory ^ Service ^ Stratigraphic 2. Operator Name: BP Exploration (Alaska) Inc. 5. Date Comp., Susp., or Aba~n~, Q 2-21-2008 ~ G~", p 12. Permit to Drill Number 207-172 3. Address: P.O. Box 196612, Anchorage, Alaska 99519-6612 6. Date Spudded 1-19-2008 13. API Number 50-029-23380-00-00 4a. Location of Well (Governmental Section): Surface: 430 ' FS ' 7. Date T.D. Reached 2-14-2008- 14. Well Name and Number: PBU Z-112 6 L, 3613 FEL, SEC. 19, T11N, R12E, UM Top of Productive Horizon: 4219' FSL, 3382' FEL, SEC. 19, T11 N, R12E, UM 8. KB (ft above MSL): 82.60 Ground (ft MSL): 28.5 15. Field /Pool(s): Prudhoe Bay Field /Borealis Pool Total Depth: 4637' FSL, 4649' FEL, SEC. 18, T11N, R12E, UM 9. Plug Back Depth (MD+TVD) 13600 6707 4b. Location of Well (State Base Plane Coordinates, NAD 27): Surface: x- 599064 y- 5959100 Zone- ASP4 10. Total Depth (MD+TVD) 13600 - 6707 16. Property Designation: ADL 028262 TPI: x- 599297 y- 5959017 Zone- ASP4 Total Depth: x- 597932 y- 5964697 Zone- ASP4 11. SSSV Depth (MD+TVD) N/A 17. Land Use Permit: 18. Directional Survey ®Yes ^ No Submit electronic and rinted information er 20 AAC 25.050 19. Water depth, if offshore N/A ft MSL 20. Thickness of Permafrost (TVD): 1900' (Approx.) 21. Logs Obtained (List all logs here and submit electronic and printed information per 20 AAC 25.071): rr Gyro, MWD, GR, RES, PWD, AZI-DENS, NEU, SONIC, ABI, AZM-DEN "1.\ 3 }~y o'S wen O 22. CASING, LINER AND CEMENTING RECORD ~~ cs ~ ® ' h ~ ~ S CASING SETTING DEPTH MD SETTING DEPTH TVD HOLE AMOUNT WT. PER FT. GRADE TOP - BOTTOM TOP BOTTOM SIZE CEMENTING.. RECORD PULLEp 20" 215.5# A-53 Surface 108' Surface 108' 42" 260 sx Arctic Set A rox. 9-5/8" 40# L-80 29' 3230' 29' 3039' 12-1/4" 621 sx Dee Crete 408 sx Class 'G' 7" 26# L-80 26' 26' 6679' 8-3/4" 242 sx LiteCrete 179 sx Class 'G' 4-1/2" 12.6# L-80 7604' 13590' 6621' 6708' 6-1/8" Uncemented Slotted Liner 23. Open to production or inject ion? ®Yes ^ No 24. TueING RECORD If Yes, list each i (MD+TVD of Top ~ Bottom; Pe nterval open rforation Size and Number): SIZE DEPTH SET MO PACKER SET MD 4-1/2" Slotted Liner 4-1/2", 12.6#, 13Cr80 7605' 7528' MD TVD MD TVD 13262' - 13506' 6714' - 6709' 25. ACID, FRACTURE, CEMENT SQUEEZE, ETC. DEPTH INTERVAL MD AMOUNT & KIND OF MATERIAL USED 2300' Freeze Protected with 82 Bbls of Diesel 26. PRODUCTION TEST Date First Production: Not On Production Method of Operation (Flowing, Gas Lift, etc.): Date Of Test: HOUrS Tested: PRODUCTION FOR TEST PERIOD OIL-BBL: GAS-MCF: WATER-BBL: CHOKE SIZE: GAS-OIL RATIO: Flow Tubing PreSS. CaSing PreSS: CALCULATED 24-HOUR RATE OIL-BBL: GAS-MCF: WATER-BBL: OIL GRAVITY-API (CORK): 27. CORE DATA Conventional Core(s) Acquired? ^Yes ®No Sidewal l Cores Ac uired? ^Yes ®No If Yes to either question, list formations and intervals cored (MD+TVD of top and bottom of each), and summarize lithology and presence of oil, gas or water (submit separate sheets with this form, if needed). Submit detailed descriptions, core chips, photographs and laboratory analytical results per„2Q RAC 254071. i None S ~ MAC` ~ ~ 2406 Form 10-407 Revised 02/2007 ~v~ I I v ~ CONTINUED ON REVERSE SIDE RE~EiVE® MAR 2 0 2008 Hlaska Oil & Gas Cons. Com ' 3 2S. GEOLOGIC MARKERS (LIST ALL FORMATIONS AN KERS ENCOUNTERED): 29. FORMATION TESTS NAME TVD Well Teste ^ Yes ®No Permafrost Top If yes, list intervals and formations tested, briefly summarizing test results. Attach separate sheets to this form, if needed, and submit Permafrost Base 1960' 1862' detailed test information per 20 AAC 25.071. Top of Ugnu 3354' 3148' None Top of Ugnu 'M' Sands 4641' 4276' Top of Schrader Bluff'N' Sands 4926' 4556' Top of Schrader Bluff'O' Sands 5115' 4742' Base of Schrader Bluff / Top of Colville 5463' 5082' Top of Horizon 7208' 6410' Top of Kalubik 7636' 6638' Kuparuk 'C' 7710' 6678' Kuparuk 'B' 7807' 6721' Kuparuk 'B' 7945' 6724' Formation at Total Depth (Name): Kuparuk'C' 13600' 670T 30. List of Attachments: Summary of Daily Drilling Reports, Well Schematic Diagram, Surveys and aLeak-Off Test Summary 31. I hereby certify that the foregoing is true and correct to the best of my knowledge. Signed Sondra St wman ~ Title Drilling Technologist Date (~ - (9'- (~~ PBU Z-112 207-172 Prepared By NameMumber. Sondra Stewman, 564-4750 Well Number Drilling Engineer: Brandon Peltier, 564-5912 Permit No. / A royal No. INSTRUCTIONS GeNew-~: 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. IreM 1a: 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. IreM 4b: TPI (Top of Producing Interval). IreM 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. IreM 13: The API number reported to AOGCC must be 14 digits (ex: 50-029-20123-00-00). IreM 20: Report true vertical thickness of permafrost in Box 20. Provide MD and TVD for the top and base of permafrost in Box 28. IreM 22: Attached supplemental records for this well should show the details of any multiple stage cementing and the location of the cementing tool. IreM 23: 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). IreM 26: Method of Operation: Flowing, Gas Lift, Rod Pump, Hydraulic Pump, Submersible, Water Injection, Gas Injection, Shut-In, or Other (explain). IreM 27: 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. IreM 29: 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 02/2007 Submit Original Only TREE _ ~ _ 41118•, WELLHEAD = ACTUATOR - FMC NfA KB. ELEV = BF. ELEV ~~ _ II2.60' 56.52` KOP= 500 Max Ac~gle = 97.5 @ 8026 - Datum Nt0 = ~ ~ ~, Datum Tli D ~ S60Q' S S ~ '10$' ~ Z-112 NC}TES: '"``CHR©ME TBC~7`:* 4-112" FEES ?€ NIP, itJ = 3.813" GA S LIFT MA iJDRELS ST N1D TVD DEV .. TYPE VLV LATCH PART DATE 6 2735 2590. : 25 KBCr2 DhAY BK 0 0211910$ 5 36+13 3395 30 KBG2 L7C1tY(E BK 16 02/27108 4 4426 4075 27 KBG-2 i3AAY BK 0 02/27108 3 ' 5165 4791 9 KSG-2 DMY BK 0 02!19108 z 59a5 5495 26 KBG~2 Sa BK 2D 02127108 1 7388 6507 58 K8G2 DRAY BK 0 02x1 Bros Il" t;SkCa, 1f5iF, L-t3U IGII, .{33tS;i apt, IU=Y~.1/6" 1 7, 464~-i 4-112" HES x NIP, ~ - 3.813"' 5403' ~'~ +~• 4112"' XD DURO SLR SIV, ID= 3,813" Minimum ILD = 3.813" 22.94' d-1 i2" X N p p le !2 THG, 12.5#, 13-Ct VT, .0152 bpf, ID= 3.:58" ~ 7, 7" BKRV~-IIPSTK~GK-TOP ?71~" ~7., ~.~ ~ 7953' 7" CSG, 2S#, 1.-80, BTC-M, ,11383 hpf rD , +x.275 $a39' 4.5" RA TAG ........ .... SLIDING SLEEVE. and SLOTTED LINER SUMMARY . ... Depth # Description CipnlGsd DATE 7,G92' 6 Sliding Sleeve O 0211810$ 7,757' S Sticiirtg Sleeve Q 02/18/0B 8,057°' 4 5I'rdirtg Sleeve O 02!18108 9,167" 3 S~ciirtg Sleeve a 02118/08 10,887` 2 Slltlirtg Sleeve a 02118!08 11,987' 1 SC1ing Sleeve O 02118108 SLpTTEO LI NER 13„262' Top of Sbtled O 02118/08 13,504' Bottom of Slotted O 02118108 7,528`...... 7" X 4112" BKR SK3 PKR, (D - 3.875` 7,562' 41 t2" HES X NIP, 1D - 3.$13"_ _.7593' 4-1 t2", NES X NNE, = 3.813 7,603' 7" X 5" BI{Ft ZXP I'ItR & LNR HGR w tTt CK St.V, 11.?T x 6.25" ___ 7,6{}5'. 4112" WLEG, ID = 4.OaQ~ 9.1~79.5~ 4.5" RA TAG MPAS PACKER SUM MARY PKR TOP # ECP DEPTH DATE 7943 5 7604 - 7939 02/18/08 8366 4 7955 - 8364 02/18/08 10014 3 8379 - 10111 02/18/08 11853 2 10026 - 11850 02/18/08 13115 1 11866 - 13112 02/18!08 5' 11 RA TAG ~/ Slotted Liner~J *~-112" t_NR, 12.8 #, L-80 IBT M, C) = 3.958" DATE REV av connr~ErJrs nArE RE!/ 6Y Corti-~nEntTS AURaRA UNIT 02121/08 N9ES OR1GtNAt. CQMPIEifaN WELL: Z-112 _. 02/23!08 !TLH CORRECTIONS No: 2071720 -_ 0311110:3 DTRlTL.H GLV C(O {{)2127/08} API No: 50-029-23380 SEC 19, T11 N, R12E 4305' FSL, 3613' Fl=t. Exptaratcn {Alaska) BP EXPLORATION Operations Summary Report Page 1 of 23 ~ Legal Well Name: Z-112 Gommon Well Name: Z-112 Spud Date: 1/19/2008 Event Name: DRILL+COMPLETE Start: 1/16/2008 End: 2/21/2008 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 2/21/2008 Rig Name: NABOBS 9ES Rig Number: Date From - To Hours Task ~ Code NPT Phase j Description of Operations 1/16/2008 16:00 - 19:00 3.00 RIGD P PRE 19:00 - 21:30 2.50 MOB P PRE 21:30 - 00:00 2.50 MOB P PRE 1/17/2008 00:00 - 04:00 4.00 MOB P PRE 04:00 - 13:30 9.50 MOB P PRE 13:30 - 16:00 2.50 DIVRTR P PRE 16:00 - 18:00 2.00 MOB P PRE 18:00 - 20:00 2.00 RIGU P PRE 20:00 - 22:30 I 2.501 RIGU I P I I PRE 22:30 - 00:00 1.50 RIGU P PRE 1/18/2008 00:00 - 02:30 2.50 RIGU P PRE 02:30 - 04:00 1.50 RIGD P PRE 04:00 - 09:30 5.50 DIVRTR P PRE 09:30 - 16:30 7.00 DIVRTR P PRE 16:30 - 20:00 3.50 RIGU P PRE 20:00 - 22:30 2.50 RIGU P PRE 22:30 - 00:00 1.50 RIGU P PRE 1/19/2008 00:00 - 00:30 0.50 DIVRTR P PRE 00:30 - 01:00 0.50 RIGU P PRE 01:00 - 02:00 1.00 RIGU P PRE 02:00 - 03:00 1.00 RIGU P PRE 03:00 - 05:00 2.00 RIGU N RREP PRE 05:00 - 05:30 0.50 RIGU P PRE 05:30 - 06:00 0.50 RIGU P PRE 06:00 - 07:00 1.00 RIGU P PRE 07:00 - 07:30 0.50 RIGD P PRE 07:30 - 09:00 1.50 RIGU P PRE 09:00 - 09:30 0.50 RIGU P PRE 09:30 - 10:30 1.00 RIGU P PRE 10:30 - 13:15 2.75 RIGU P PRE 13:15 - 13:45 I 0.501 DRILL I P I I SURF Rig down and prepare for rig move. Unhook from interconnect. Blowdown lines. Move camp and shops to Z-pad. Laydown derrick. Remove cuttings tank. Remove berms. Prep rig parameter for rig move. Pull pits away from sub. Move pits to Z-pad. Pull sub base off of W-216i. Pick up matting boards and herculite. Move sub around pad by access road. Move sub base from W-pad to Z-pad Stage wellhead equipment in cellar area. Finish nippling up diverter stack. Move sub base over Z-112. Place matting boards under rig Raise derrick. Rig up rig floor. Connect cement and mud lines. Rig up hydraulic service loop to top drive. Rig up kelly hose. Spot mud pits and set matting boards. Hook up interconnect. *Accepted rig ~ 20:00 hr. 1/17/2008. Rolled back 2.5 hrs due to diverter work. Set berms around rig. Heat up mud pits. Berm around rig. Complete Pre-Spud check list. Thaw out mud pits. **Held Pre Spud meeting with Bill Hohn's crew during Pre Tour meeting. Take on water in pits. Load pipe shed with drill pipe. Change out bell nipple adapter to 20". Nipple up diverter riser. Mix Spud mud ~ 06:00 hr. Load pipe shed with drill pipe and HWDP Continue nipple up diverter riser. Riser length too short. Nipple down riser, change out to longer riser Pick up 4" drill pipe out of pipeshed and rack back in derrick. (Tagged ice plug C~ 72') Bring up BHA drilling tools to rig floor. Finish picking up 4" drill pipe and rack back in derrick. Perform Diverter function test and accumulator drawdown test. Witnessing of test waived by AOGCC rep Chuck Scheve. Test witnessed by BP WSL R. French and NAD TP G. Hoffman Pick up HWDP out of pipeshed and stand back in derrick. Make up bit and near bit STAB for ice cleanout. Service rig and topdrive Trouble shoot topdrive, rewire service loop. Fill mud lines, surface stack and check for leaks. Pressure test surface mud lines to 3,200 psi - OK. Drill out ice plug from 72' to 98'. 450 gpm, 325 psi, 45 rpm, .4k TO. Laydown bit and NB STAB. Stand back stand of HWDP. Make up DC and Jar stand and stand back in derrick. Hold Pre-Spud meeting with WSL, TP, rig crews and support personnel. Rig up Sperry logging tools and Gyro Data Make up BHA #1: New HTC 12.25" MXL-01X bit, 1.5 deg PDM, NM Lead DC, NM STAB, MWD, NM STAB, NM XO, UBHO, NM DC, NM STAB, tea NM DCs, Saver Sub. Spud in Z-112 ~ 13:15 hr, 1/19/2008. Drill from 108'to 175'. Printed: 3/12/2008 11:45:09 AM BP EXPLORATION Page 2 of 23 Operations Summary Report Legal Well Name: Z-112 Common Well Name: Z-112 Spud Date: 1/19/2008 Event Name: DRILL+COMPLETE Start: 1/16/2008 End: 2/21/2008 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 2/21/2008 Rig Name: NABOBS 9ES Rig Number: ~ '~ Description of Operations Date ~ From - To Hours Task i Code NPT Phase 1/19/2008 13:15 - 13:45 0.50 DRILL P SURF 550 gpm, 770 psi, 80 rpm, .7k TO. Make connection and damaged topdrive quill. 13:45 - 16:30 2.75 DRILL N RREP SURF Change out topdrive quill. 16:30 - 17:30 1.00 DRILL P SURF Pick up DC stand and install NM STAB. Make up to topdrive 17:30 - 19:00 1.50 DRILL P SURF Drill from 175' to 260' and Gyro survey. 550 gpm, 1,215 psi, 80 rpm, .6k TO, Lost 140 bbls of mud downhole while drilling 19:00 - 20:30 1.50 DRILL P SURF Condition mud in pits to raise volume and viscosity. 20:30 - 22:00 1.50 DRILL P SURF Drill from 260' to 350'. Gyro surveys every stand. 530 gpm, 850 psi, 80 rpm, .6K TO. Lost another 178 bbls of mud while 22:00 - 23:00 1.00 DRILL P SURF POH 2 stands. Pick up Jar stand and run in hole to bottom. 23:00 - 00:00 1.00 DRILL P SURF Drill from 350' to 450'. Gyro surveys every stand. 550 gpm, 1,350 psi, 80 rpm, .6k TO, PU - 57k, SO - 57k, RWT - 57k, WOB - 25k. No more mud losses. *Lost 318 bbls of s ud mud for the da 1/20/2008 00:00 - 12:00 12.00 DRILL P SURF Start kick-off C~3 450'. Directionally drill from 450'to 1,290'. Gyro survey every stand. Last Gyro ~ 1,099', bit depth. 550 gpm, 1,800 psi off, 1,960 psi on, 80 rpm, 1.5k TO off, 4.8k TO on, PU - 76k, SO - 72k, RWT - 75k, WOB - 25-35k. AST - 3.73 hrs, ART - 1.23 hrs 12:00 - 17:30 5.50 DRILL P SURF Directionally drill from 1,290'to 1,870'. 550 gpm, 1,890 psi off, 2,080 psi on, 80 rpm, 1.6k TO off, 3.5k TO on, PU - 92k, SO - 77k, RWT - 75k, WOB - 25-35k 17:30 - 18:30 1.00 DRILL P SURF Circulate bottoms up 3 times ~ 550 gpm, 2,010 psi, 80 rpm, 1.7k TO. 18:30 - 20:30 2.00 DRILL P SURF Monitor well - OK. 9.3 ppg MW. Short trip to jar stand from 1,870' to 270'. No drag except for 1st HWDP stand with 25k drag. Wiped again and had no drag. 20:30 - 21:30 1.00 DRILL P SURF Trip in hole from 270' to bottom ~ 1,870' without problem. 21:30 - 00:00 2.50 DRILL P SURF Directionally drill from 1,870' to 2,355'. 550 gpm, 1,870 psi off, 2,160 psi on, 80 rpm, 1.6k TO off, 4.9k TO on, PU - 100k, SO - 82k, RWT - 93k, WOB - 25-35k AST - 2.60 hrs, ART - 3.16 hrs. *No mud loss for the da . *318 total mud loss for surf interval. 1/21/2008 00:00 - 02:30 2.50 DRILL P SURF Directionally drill from 2,355' to 2,649'. Minimal amount of h drates encountered ~ 2 530' 550 gpm, 1,875 psi off, 2,100 psi on, 80 rpm, 1.7k TO off, 4.5k TO on, PU - 100k, SO - 85k, RWT - 94k, WOB - 35k 02:30 - 04:00 1.50 DRILL P SURF Condition mud in pits. Viscosity fell to 200 due to mix pump losing suction. 04:00 - 08:15 4.25 DRILL P SURF Directionally drill from 2,649' to TD ~ 3.240' MD, 3,048' TVD. Minimal amount of h drates encount red 650 gpm, 2,760 psi off, 3,005 psi on, 80 rpm, 4.1 k TO off, 5.2k TO on, PU - 107k, SO - 92k, RWT - 95k, WOB - 40k AST - 0.73 hrs, ART - 3.30 hrs 08:15 - 10:00 1.75 DRILL P SURF Take last directional survey. Circulate 3 bottoms up C~ 650 Printed: 3/12/2008 11:45:09 AM BP EXPLORATION Page 3 of 23 Operations Summary Report Legal Well Name: Z-112 Common Well Name: Z-112 Spud Date: 1/19/2008 Event Name: DRILL+COMPLETE Start: 1/16/2008 End: 2/21/2008 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 2/21/2008 Rig Name: NABOBS 9ES Rig Number: Date From - To '~, Hours Task Code NPT Phase Description of Operations -- ' --- 1/21/2008 08:15 - 10:00 1.75 DRILL P SURF gpm, 2,400 psi ICP, 2,300 psi FCP, 80 rpm, 2.3k TO. 10:00 - 11:30 1.50 DRILL P SURF Short trip from 3,240' to 1,760' without problem. 11:30 - 12:30 1.00 DRILL P SURF Trip back in hole to bottom from 1,760'to 3,240' without problem. 12:30 - 15:00 2.50 DRILL P SURF Circulate until hole cleaned up. 5 bottoms up ~ 650 gpm, 2,660 psi, 80 rpm, 2.4k TO. 15:00 - 17:30 2.50 DRILL P SURF Monitor well - OK. 9.4 ppg MW. POH from 3,240 to BHA Q 270'. Pulled 20k over from 1,950'to 1,800'. Wiped clean. Rest of trip out was good. 17:30 - 21:00 3.50 DRILL P SURF Stand back Jar and DC stands. Laydown remainder of BHA. Bitgrade:2-2-WT-A-E-I-NO-TD 21:00 - 22:30 1.50 DRILL P SURF Clear rig floor of stabilizers, lead collar and bit. Clean rig floor. 22:30 - 00:00 1.50 CASE P SURF Ri u to run 9 5/8" surface casing. Make hanger dummy run. Closed valves and fill stack. Check for leaks - OK. 1/22/2008 00:00 - 02:00 2.00 CASE P SURF Continue rigging up to run 9 5/8" surface casing. 02:00 - 09:30 7.50 CASE P SURF Pick up and Baker-Lok shoe track. Check floats - OK. Continue running in hole with 9 5/8" 40# L-80 BTC casing to 3,220'. Make up torque - 7,500 ft/Ibs with BOL 2000 NM pipe dope. Fill every joint. Broke circulation briefly at 1,320' and 2,060'. 09:30 - 10:00 0.50 CASE P SURF Make up hanger and landing joint. Land casing on depth C~ 3,230' Halliburton 9 5/8" Float Shoe-Bottom set ~ 3,230' 2 Jts 9 5/8" 40# L-80 BTC Casing (#1- #2) ~ 3,147' Halliburton 9 5/8" Float Collar ~ 3,146' 66 Jts 9 5/8" 40# L-80 BTC Casing (#3) ~ 3,105' tea 9 5/8" 40# L-80 BTC Pup Jts (19.78', 10.04') C~ 3,075' 30 Jts 9 5/8" 40# L-80 BTC Casing (#4-#78) ~ 32' 9 5/8" 40# L-80 BTC Hanger P x P Pup Jt. C~ 29.53' 9 5/8" Fluted Casing Hanger ~ 29.2' PU Wt - 155k, SO Wt - 124k, Baker-Lok Shoe-track Jts #1-3 Bowsprings Centralizers: 1 on stop ring 10' above shoe on jt #1 1 on collars of joints #3- #25 1 on collar on top pup joint 26 Total Centralizers, 1 Stop Rings 10:00 - 11:00 1.00 CEMT P SURF Rig down Franks tool, rig up HES 2 plug cementing head. Rig up cementing lines. 11:00 - 13:00 2.00 CEMT P SURF Stage pump up from 2 bpm, 270 psi to 6 bpm, 460 psi. Reci rocate casin in 15 ft strokes. PU - 155k, SO - 124k. MW - 9.4 ppg, Vis - 80, PV - 15, YP - 17. Held cementing PJSM while circulating. 13:00 - 17:30 4.50 CEMT P SURF Primary 9 5/8" casing cement job. Pump 5 bbls of fresh water. Attempt test lines - Halliburton valve on cement line leaked. Change out valve. Pump 3 bbls of fresh water. Test cement lines to 4,000 psi - OK. Mix on the fly and pump 95 bbls of 10.0 ppg MudPush II spacer Printed: 3/12/2008 11:45:09 AM '~ BP EXPLORATION Operations Summary Report Legal Well Name: Z-112 Common Well Name: Z-112 Event Name: DRILL+COMPLETE Contractor Name: NABORS ALASKA DRILLING Rig Name: NABORS 9ES Date From - To Hours I Task Code NPT I - 113:00 - 17:30 4.50 - - 1/22/2008 ~ CEMT P CJ` C~~ ~ CGS ~ ~s ~ ~ T ~ ~~ 17:30 - 18:00 0.50 CEMT P 18:00 - 21:30 3.50 CEMT P 21:30 - 00:00 1 /23/2008 00:00 - 03:30 03:30 - 05:30 2.50 DIVRTR P 3.50 DIVRTR P 2.00 WHSUR P 05:30 - 00:00 1 /24/2008 100:00 - 00:30 Start: 1 /16/2008 Rig Release: 2/21/2008 Rig Number: Page 4 of 23 i, Spud Date: 1 /19/2008 End: 2/21 /2008 Phase Description of Operations SURF ~ 4 bpm, 210 psi ICP, 2.6 bpm, 110 psi FCP. Drop bottom plug. Mix on the fly and pump 428 bbls of 10.7 ppg CemCRETE lead cement X3.7 bpm, 242 psi ICP, 3.7 bpm, 457 psi, FCP. Mix on the fly and pump 84 bbls of 15.8 ppg Class "G" tail cement ~ 3.7 bpm, 242 psi ICP, 3.7 bpm, 306 psi FCP. Drop top plug Kick out plug with 5 bbls of fresh water. Switch to rig. Displace cement with 234 bbls of 9.4 ppg mud. !st 225 bbls ~ 5.2 bpm, 280 psi ICP, 930 psi. Stoped reci rocatin with 137 bbls away due to down stroke sticking. PU - 180k, SO SURF SURF SURF SURF SURF 18.501 WHSUR I N I WAIT I SURF 0.501 WHSUR I N I WAIT I SURF 00:30 - 06:00 5.50 BOPSU P 06:00 - 07:00 1.00 BOPSU P 07:00 - 08:00 1.00 BOPSU P 08:00 - 16:30 8.50 BOPSU P 16:30 - 17:30 I 1.001 BOPSUR P 17:30 - 20:00 2.50 BOPSU N 20:00 - 21:00 1.00 BOPSU P 21:00 - 22:00 1.00 BOPSU P 22:00 - 22:30 0.50 BOPSU P 22:30 - 23:30 1.00 BOPSU P SURF SURF SURF SURF SURF RREP SURF SURF SURF SURF SURF - 7VK. Last 9 bbls ~ 3.1 bpm, 820 psi ICP, 3.1 bpm, 880 psi FCP. Bump plug with 1,500 psi at calculated strokes with 95.2% pump efficiency. CIP ~ 17:11 hr Bleed off pressure, check floats - OK. Returned 70 bbls of "Sidewalk Cement" back to surface = 215% washout factor. Pressure test casing to 3,500 psi - 30 min -Good test! Rig down casing and cementing equipment. Laydown landing joint. Flush diverter stack, flowline and mud troughs. Clear rig floor. Nipple down diverter lines and diverter riser. Nipple down diverter stack. Secure in cellar. Prep conductor for wellhead installation. Nipple up casing head. Test metal to metal seals to 1,000 psi - 15 min OK. Nipple up tubing spool. Prep to move BOP stack. Phase 3 called. Do misc cleaning inside rig. After 18 hrs, hands rotated sleeping. Rotated to satellite camp for meals. WOW, Phase 2. Mobilized rig crews for change out. New crew on location ~ 00:30 hr. Change long bales to short bales. Rig up to test BOPE. Pressure test BOPE to 250 psi low, 3,500 psi high. Test annular to 250 psi low, 2,500 psi high. Hold each test for 5 minutes each. {erform accumulator drawdown test. Witnessing of test waived by AOGCC rep Chuck Scheve. Test witnessed by BP WSL T. Anglen and NAD TP M. Ashley. Rig down BOPE test equipment and blowdown lines. Install wear bushing. Replaced worn Geronimo line. Service topdrive, crown and drawworks. Pick up BHA tools to rig floor. Move HWDP stands to driller side of derrick. Make up used 8 3/4" bit and NB stab to drill out cement on top of 9 5/8" casing. Printed: 3/12/2008 11:45:09 AM 3 1 BP EXPLORATION Operations Summary Report Page 5 of 23 ~ Legal Well Name: Z-112 Common Well Name: Z-112 Spud Date: 1/19/2008 Event Name: DRILL+COMPLETE Start: 1/16/2008 End: 2/21/2008 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 2/21/2008 Rig Name: NABOBS 9ES Rig Number: Date From - To Hours Task Code NPT Phase Description of Operations 1/24/2008 23:30 - 00:00 0.50 CLEAN P SURF Clean out wellbore to 98' ~ 217 bpm, 90 psi 20 fpm, .4k TO. Only had cement the first couple of feet. Will leave bit on stand of HWDP while picking up drill pipe in case of encountering and stringers. 1/25/2008 00:00 - 05:00 5.00 CEMT P SURF Pick up single joints of drill pipe out of shed for intermediate interval to 2.950'. 04:30 - 08:30 4.00 CEMT P SURF POH standing back drill pipe. Break out bit and NB STAB. Stand back stand of HWDP. 08:30 - 09:00 0.50 CEMT P SURF Clear and clean rig floor. 09:00 - 12:00 3.00 DRILL P INTi Make up 8 3/4" BHA #2: New 8 3/4" Hyclalog MSX616M-A2 bit, PowerDrive Bias unit, PowerDrive Control collar, 0 deg PDM, NM STAB, LWD/ARC, MWD, LWD/ISONIC, LWD/ADN, tea NM DC's, Saver sub, Jar stand. 12:00 - 13:30 1.50 DRILL P INT1 Run in hole with BHA #2 on 4" HWDP to 1,044' 13:30 - 14:30 1.00 DRILL P INT1 Run in hole picking up single joints of drill pipe fro 1,044' to 1,604'. 14:30 - 15:00 0.50 DRILL P INT1 Shallow hole MWD test. 550 gpm, 2,050 psi - OK. PU - 78k, SO - 73k. 15:00 - 17:30 2.50 DRILL P INTi Pick up 1st ghost reamer and continue picking up single joints of drill pipe from 1,604' to 2,758'. 17:30 - 19:00 1.50 DRILL P INT1 Cut and slip drilling line 65'. Inspect brakes and clean out from under drawworks. 19:00 - 23:00 4.00 DRILL P INTi PJSM on D-6 Stripping Drill with WSL R. French, NAD TP T. Leigh and K. Sullivan's crew. Install TIW, inside BOP and topdrive. Break circulation and optain slow pump rates. Close annular and fill up gas buster. Close choke and apply 200 psi to annulus. Strip in 2 joints of drill pipe holding drill pipe pressure constant. Repeat several times with personnel alternating positions on choke station.. Bleed off all pressures, open well. PJSM on D-5 Well Kill Drill. Close annular and apply 200 psi to well. Practice bringing pump on line to slow pump rate and cracking choke open then holding SPR pressure plus SIDPP. We cheated slightly by assuming that kill weight fluid was around the bit and held constant drill pipe pressure during well kill. (It was explained about pressure and stroke schedules while kill weight mud was being pumped from surface). As in the stripping drill, personnel was switched out on the pump and choke operating positions. 23:00 - 23:30 0.50 DRILL P INT1 POH 2 joints and laydown inside BOP and TIW valves. 23:30 - 00:00 0.50 DRILL P INTi Continue running in hole picking up single joints of drill pipe from 2,758' to 2,949'. 1/26/2008 00:00 - 01:00 1.00 DRILL P INT1 Continue running in hole with BHA #2 picking up single joints of drill pipe from 2,949' to 3,140. Wash last 2 singles down C~ 400 gpm, 1,615 psi 40 rpm, 3k TO. Tagged top of cement at 3 138' 01:00 - 01:30 0.50 DRILL P INT1 CBU @ 555 gpm, 2,785 psi. 01:30 - 03:00 1.50 DRILL P INTi Perform D-5 Well Kill drill as on previous tour. 03:00 - 05:00 2.00 DRILL P INT1 Drill out shoe track. FC and FS on depth. Drill out rathole to 3,240'. 555 gpm, 2,785 psi, 40 rpm, 3k TO PU - 105k, SO - 80k, RWT - 98k, WOB 10k. 05:00 - 06:00 1.00 DRILL P INT1 Clean out from under shakers and mud troughs. Printed: 3/12/2008 11:45:09 AM i t BP EXPLORATION Page 6 of 23 Operations Summary Report Legal Well Name: Z-112 Common Well Name: Z-112 Spud Date: 1/19/2008 Event Name: DRILL+COMPLETE Start: 1/16/2008 End: 2/21/2008 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 2/21/2008 Rig Name: NABOBS 9ES Rig Number: Date From - To ;Hours Task Code NPT ~ Phase Description of Operations 1/26/2008 06:00 - 06:30 0.50 DRILL P INT1 Drill 20' of new hole from 3,240' to 3,260'. 555 gpm, 1,965 psi off, 2,075 psi on. 40 rpm, 2k TO off, 3k TO on. PU - 105k, SO- 85k, RWT - 98k, WOB - 5k. 06:30 - 07:00 0.50 DRILL P INT1 Perform LOT: MD - 3,230', TVD - 3,039' MW - 8.80 ppg, Leak off Pressure - 1065 psi EMW - 15.54 07:00 - 07:30 0.50 DRILL P INT1 Obtain benchmark ECD's: 585 gpm, 2,080 psi, 60 rpm, CECD without ghost reamer - 9.33 ppg, CECD with ghost reamer - 9.53 ppg. AECD static - 9.28 ppg, AECD rotating - 9.33 ppg. 07:30 - 12:00 4.50 DRILL P INT1 Directionally drill 8 3/4" hole with Vortex assembly from 3,260' to 4,005'. 585 gpm, 2,089 psi off, 2,140 psi on. 60 rpm, 3k TO off, 4k TO on. PU - 120k, SO- 100k, RWT - 105k, WOB - 10k. CECD - 9.53 ppg, AECD - 9.69 ppg. ADT - 2.44 hrs 12:00 - 20:30 8.50 DRILL P INT1 Directionally drill 8 3/4" hole with Vortex assembly from 4,005' to 5,080'. 585 gpm, 2,510 psi off, 2,680 psi on. 50 rpm, 3.4k TO off, 4.5k TO on. PU - 140k, SO- 108k, RWT - 120k, WOB - 10k. CECD - 9.32 ppg, AECD - 9.59 ppg. 20:30 - 22:00 1.50 DRILL N DFAL INT1 Circulate while directional drillers confer with each other and town directional planner about possible close approach issue. Turned into anon-issue. Tool was believed to be in magnetic mode but had switched to gravity mode. 22:00 - 00:00 2.00 DRILL P INTi Directionally drill 8 3/4" hole with Vortex assembly from 5,080' to 5,242'. 585 gpm, 2,510 psi off, 2,680 psi on. 50 rpm, 3.4k TO off, 4.5k TO on. PU - 140k, SO- 108k, RWT - 128k, WOB - 10k. CECD - 9.32 ppg, AECD - 9.59 ppg. ADT - 6.08 hrs. 1/27/2008 00:00 - 12:00 12.00 DRILL P INT1 Directionally drill 8 3/4" hole with Vortex assembly from 5,242' to 6,304'. 585 gpm, 3,120 psi off, 3,230 psi on. 55 rpm, 5k TO off, 6k TO on. PU - 167k, SO- 119k, RWT - 138k, WOB - 20k. CECD - 9.30 ppg, RECD - 9.86 ppg. ADT - 7.85 hrs 12:00 - 00:00 12.00 DRILL P INT1 Directionally drill 8 3/4" hole with Vortex assembly from 6,304' to 6,915'. 585 gpm, 3,360 psi off, 3,485 psi on. 50 rpm, 3.8k TO off, 4k TO on. PU - 164k, SO- 124k, RWT - 138k, WOB - 12k. CECD - 9.30 ppg, AECD - 9.76 ppg. ADT - 10.36 hrs ADT for the day - 18.21 hrs 1/28/2008 00:00 - 05:30 5.50 DRILL P INT1 Directionally drill 8 3/4" hole with Vortex assembly from 6,915' to 7,155 Printed: 3/12/2008 11:45:09 AM ~ ~ BP EXPLORATION Page 7 of 23 Operations Summary Report Legal Well Name: Z-112 Common Well Name: Z-112 Spud Date: 1/19/2008 Event Name: DRILL+COMPLETE Start: 1/16/2008 End: 2/21/2008 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 2/21/2008 Rig Name: NABORS 9ES Rig Number: Date I From - To Hours ! Task Code NPT Phase Description of Operations 1/28/2008 j00:00 - 05:30 5.50 DRILL P INTi 585 gpm, 3,890 psi off, 3,950 psi on. 05:30 - 08:00 I 2.501 DRILL I P 08:00 - 12:00 I 4.00 I DRILL I P 12:00 - 21:30 I 9.501 DRILL I P 21:30 - 22:30 I 1.001 DRILL I P 22:30 - 00:00 1.501 DRILL P 1/29/2008 100:00 - 04:30 I 4.501 DRILL I P 04:30 - 05:30 I 1.001 DRILL I P 05:30 - 06:00 0.501 DRILL P 06:00 - 10:00 ( 4.001 DRILL I P 60 rpm, 3.8k TO off, 4.5k TO on. PU - 155k, SO- 123k, RWT - 142k, WOB - 10-15k. CECD - 11.48 ppg, AECD - 11.56 ppg. Weighted up mud from 9.2 ppg to 11.0 ppg using spike fluid. 11.0 ppg back ~ 03:00 hr. INTi Condition mud, 10.8 ppg light spots. Making sure that mud weight is 11.0 ppg all the way around. Geologist prognosed estimated HRZ depth comin in high at a x 7,165' to 7 200' MD. Circulate at 450 gpm, 2,820 psi, 35 rpm, 3.4k TO. INT1 Directionally drill 8 3/4" hole with Vortex assembly from 7,155' to 7,452 550 gpm, 4,125 psi off, 4,250 psi on. 55 rpm, 5k TO off, 5k TQ on. PU - 156k, SO- 130k, RWT - 138k, WOB - 20k. CECD - 11.48 ppg, AECD - 11.71 ppg. ADT - 7.56 hrs INT1 Directionally drill 8 3/4" hole with Vortex assembly from 7,452' to TD ~ 8,050 MD, 6,873 TVD. TD'd ~ 21:39 hr, 1/28/2008 525 gpm, 4,300 psi off, 4,410 psi on. 60 rpm, 5.8k TO off, 6.5k TQ on. PU - 178k, SO- 120k, RWT - 140k, WOB - 20k. CECD - 11.48 ppg, AECD - 11.76 ppg. ADT - 7.56 hrs Started seeping mud awav ~ -7.760' ~ 16:00 hr. Cut mud weight back to 10.8 ppg and start stringing in MIX II LCM ~ 6-8 sack per hour and stopped losing mud. Lost total of 196 INT1 Circulate bottoms up C~? 545 gpm, 4,410 psi, 80 rpm, 5.8k TO. Down link tool. Shut down and monitor well - OK. 10.8 ppg MW INT1 Per Anchorage Geology, log from 8,050' to 7,790' to log top of Kuparuk. 525 gpm, 4,025 psi, no rotating. Lost total of 196 bbls of LSND mud from 16:00 hr to midnight. INT1 Finished logging. Start backreaming from 7,790' to 6,472' bit depth with top Ghost reamer in shoe. 525 gpm, 4,200 psi, 80 rpm, 4.5 - 6k TO. INTi Continue backreaming for 2 stands from 6,471' - 6,281' bit depth. Circulating a bottoms up each stand. 550 gpm,4,090 psi, 80 rpm, 4.5k TQ, PU - 150k, SO - 120k, RTW - 130k. Shut down monitor well -slow) dro in . INTi Attempt to pull pipe w/ pumps off. Pull from 6,281' and to 6,165' md. Pulled tight w/ 30k overpull ~ -6,165' md. Attempt to work through tight area but failed. tNT1 Continue backreaming for from 6.165' - 4,860' bit depth. 540 gpm, 3,500 psi, 70 rpm, 3k TO, PU - 138k, SO - 105k, RTW - 118k. Printed: 3/12/2008 11:45:09 AM BP EXPLORATION Operations Summary Report Legal Well Name: Z-112 Common Well Name: Z-112 Event Name: DRILL+COMPLETE Start: 1/16/2008 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 2/21/2008 Rig Name: NABOBS 9ES Rig Number: Page 8 of 23 Spud Date: 1 /19/2008 End: 2/21 /2008 Date From - To ', Hours ii Task Code NPT Phase Description of Operations 1 /29/2008 1 /30/2008 06:00 - 10:00 4.00 DRILL P INT1 .Shut down monitor well -slowly dropping. 10:00 - 12:00 2.00 DRILL P INTi POH w/o pumping from 4,860' and to 9-5/8" casing shoe C~ 3,230' md. PU - 110k, SO - 90k. 12:00 - 13:30 1.50 DRILL P INTi Circulate one full bottoms up at casing shoe ~ 3,230' md. PU - 107k, SO - 89k, RWT - 96k, 60 rpm, 1.9k TO, 550 gpm, 3050 psi. Pull blower hose from topdrive and blow down lines. 13:30 - 16:00 2.50 DRILL P INT1 Continue to POH without pumping up to top of BHA ~ 296' md. Lay down ghost reamer ~ 1,610' md. 16:00 - 20:00 4.00 DRILL P INT1 PJSM. Lay down BHA #2. Bit grade: 4-4-WT-A-X-I-BT-TD. 20:00 - 21:00 1.00 DRILL P INTi Clean and clear rig floor of BHA components and handling tools. 21:00 - 23:00 2.00 CASE P INT1 Pull wear bushing, flush BOP stack, and install BOP test plug. 23:00 - 00:00 1.00 CASE P 00:00 - 03:00 3.00 BOPSU P 03:00 - 03:30 0.50 WHSUR P 03:30 - 06:00 2.50 CASE P 06:00 - 07:00 1.00 CASE P 07:00 - 12:00 5.00 CASE P 12:00 - 12:30 0.50 CASE P 12:30 - 13:30 1.00 CASE P 13:30 - 15:00 1.50 CASE P 15:00 - 16:30 1.50 CASE P 16:30 - 17:00 0.50 CASE P 17:00 - 00:00 I 7.001 CASE I P 1/31/2008 100:00 - 09:00 I 9.00 I CASE I P INT1 Close blind rams and begin changing out upper pipe VBR rams to 7". INT1 Change out upper pipe VBR rams to 7". Test 7" rams to 250 psi and 3,500 psi for 5 minutes each. Pull test plug. INT1 Make dummy run with 7" hanger and landing joint - 26.5'. INT1 Change out bales. Rig up to run casing. INT1 PJSM. Pick up and make up 7" shoe track. Baker Lok connections & torque to 8500 ft-Ibs. Check floats - OK. INT1 Continue running in hole with 7" 26# L-80 BTC-M its 3 - 64 and crossover joint to 2,636' md. Make up BTC-M connections to mark at -8,250 ft/Ibs TO, using Best-O-Life 2000 NM pipe dope. Ran in hole C~1 1.5 minutes per joint. Circulated down every 20 joints for 3 minutes. Ran total of 64 BTC-M casina joints. INT1 Rig up TCII torque turn equipment. INTi Lay down TC-II Joint number 1 due to bad pin end. Change out colllar on crossover joint. INTi Continue running in hole to surface casing shoe with 7" BTC-M x 7" 26# L-80 TCII casing from 2,636' to 3,211'. Make up TCII connections to 10,100 Wlbs TO, using Jet Lube Seal Guard pipe dope. Ran in hole ~ 1,5 minutes per joint. Circulated down every 20 joints for 3 minutes. Hole taking fluid ~ 6 bph. INT1 PJSM. Lay down franks tool & change out rubber element. INT1 Circulate 1.5 x bottoms up ~ 210 gpm, 450 psi. PU - 102k, SO - 98k. Hole took 20 bbls before stabalizino back to ~12 boh dynamic losses. INTi Continue running in hole with 7" casing from 3,211' to 5,079' without problems RIH. hole still taking mud ~ -6 bph. Ran in hole at 2-3 minutes per joint, filling every joint and circulating down every 10 joints C~ 5 bpm for 3 minutes. Recorded PU and SO weights every 10 joints. PU - 160k, SO - 121 k C~ 5,079'. INT1 Continue running in hole with 7" casing from 5,079' to 8,010' and without problem. Nole still taking fluid at -4 bph. Ran in hole at 3-4 minutes per joint, filling every joint and circulating down every 10 joints ~ 5 bpm for 3-4 minutes. Did not circulate through the HRZ. Recorded PU and SO weights Printed: 3/12/2008 11:45:09 AM BP EXPLORATION Page 9 of 23 Operations Summary Report Legal Well Name: Z-112 Common Well Name: Z-112 Spud Date: 1/19/2008 Event Name: DRILL+COMPLETE Start: 1/16/2008 End: 2/21/2008 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 2/21/2008 Rig Name: NABORS 9ES Rig Number: ~ I ~, Phase Description of Operations Date From - To ;Hours '~, Task Code NPT _. - --- 1/31/2008 00:00.- 09:00 9.00 CASE P - - - - INT1 every 10 joints. PU - 245k, SO - 135k ~ 8,010' md. 09:00 - 09:30 0.50 CASE P INT1 Make up hanger and landing joint and land casing on depth ~ 8,039'. HES Float Shoe 2 Jts 7", 26#, L-80 BTC-Mod (#1-2) HES Float Collar ~ 7,953' (PBTD) 61 Jts 7", 26#, L-80 BTC-Mod (#3-14) 7", 26#,L-80 TC-II X BTC-Mod Crossover Jt. C~ 5,402' 134 Jts 7", 26#, L-80 TC-II (#1 - 134) 7" 26# L-80 TC-II Pup Jt. FMC Hanger 7 1/8" x 8 1/4" Rigid Straight Blade Centralizers: Jt. # 1 2 cent. locked down next to shoe. Skip Jt. # 2-3 BTC-M Jts. # 4 thru # 6 2 ea. Per joint separated by stop ring BTC-M Jts. # 7 thru # 9 Blank for whipstock window BTC-M Jts. # 10 thru # 64 2 ea. Per joint separated by stop ring TCII Jts. # 1 thru # 31: 2 ea. Per joint separated by stop ring 182 Total Centralizers, 91 Stop Rings 09:30 - 10:30 1.00 CASE P INT1 Rig down casing fill up tool and rig up cement head. 10:30 - 15:00 4.50 CEMT P INT1 Break circulation and sta a ump to 5 bpm while reciprocating casin 15' strokes. Losses & 8 b h while um in 2 b m and b h while um in 5 b m. Held PJSM with Dowell while circulating. 15:00 - 16:30 1.50 CEMT P INT1 Switch to Dowell. Pump 5 bbls water. Pressure test lines to 4,000 psi - OK. Pump 29.6 bbls 11.2 ppg MudPush II viscosified spacer C~ 4.0 bpm, 500 psi. Drop bottom wiper plug. Pump 112 bbls of 11.6ppg LiteCrete ~ 4.7 bpm, 640 - 540 psi. Pump 32 bbls of Class "G" 15.7 ppg tail cement 4.8 bpm, 615 - 400 psi. Wash cement lines to Tee on rig floor. Drop top plug. 16:30 - 18:15 1.75 CEMT P INTi Switch to rig and displace cement with 305 bbls of 8.5 ppg seawater. 1st 230 bbls ~ 4 bpm, 500 psi ICP, 1280 psi FCP. Next 40 bbls ~ 3 bpm, 1260 psi ICP, 1640 psi FCP. Next 20 bbls ~ 2 bpm, 1560 psi ICP, 1620 psi FCP. Reduced rate again for last 10 bbls to 1.5 bpm. Reciprocated casing 15' strokes until 100 bbls lead around corner. Bumped plug at 5140 strokes and pressure up to 3,500 psi. CIP ~ 18:15 hr. Lost a total of 18 bbls Burin cement 'ob. 18:15 - 18:45 0.50 CASE P INTi Pressure test 7" casing to 3,500 psi - OK. 18:45 - 19:00 0.25 CEMT P INT1 Bleed off pressure and check floats - OK. 19:00 - 21:30 2.50 CASE P INTi Rig down remaing casing equipment and change out bales. 21:30 - 22:00 0.50 WHSUR P INTi Install and test 7" x 9 5/8" packoff to 5,000 psi - 30 min- OK. 22:00 - 22:30 0.50 WHSUR P INT1 Perform 7" x 9 5/8" LOT and infectivity test: 3,230' MD / 3,039' TVD 10.7 ppg MW / 870 psi leak off pressure EMW - 16.21 Injection - 2 bpm - 930 psi, pumped total of 6 bbls during leak Printed: 3/12/2008 11:45:09 AM ~ ~ BP EXPLORATION Page 10 of 23 Operations Summary Report Legal Well Name: Z-112 Common Well Name: Z-112 Spud Date: 1/19/2008 Event Name: DRILL+COMPLETE Start: 1/16/2008 End: 2/21/2008 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 2/21/2008 Rig Name: NABOBS 9ES Rig Number: Date 'From - To Hours Task ~ Code NPT Phase Description of Operations 1/31/2008 22:00 - 22:30 0.50 WHSUR P INT1 off and infectivity test. 22:30 - 23:00 0.50 BOPSU P INTi Flush 80P stack. Instail BOP test plug. 23:00 - 00:00 1.00 BOPSU P INTi Chan e u per rams from 7" to 3.5" x 6" VBR's. Rig up to test rams. 2/1/2008 00:00 - 01:30 1.50 BOPSU P INTi PJSM. Test rams to 250 psi low, 3,500 psi high w/ 4" test joint - 5 min each - OK. 01:30 - 02:30 1.00 BOPSU P INTi Rig down test equipment. Pull test plug. Install wear bushing and blow down lines. 02:30 - 09:00 6.50 STWHIP P PROD1 Load pipeshed and strap drillpipe for next hole section. Service rig and prepare floor for PU DP. 'Sim Ops - OA injection: 117 bbls 10.7 ppg LSND mud ~ 3 bpm, ICP - 850 psi, FCP - 550 psi. 75 bbls 80 deg dead crude ~ 1 bpm, 850 ICP, 3 bpm, 1,300 FCP, 900 SIP. RU Little Red Hot Oil Services and inject 72 bbls 95 degF dead crude down OA ~ 2 bpm for freeze protect. ICP - 1250psi, FCP - 1600 psi. 09:00 - 16:00 7.00 STWHIP P PROD1 PJSM. Pick up 4-5/8" spiral drill collars to 274' md. Pick up 156 joints of 4" HT-40 drillpipe 1x1 to 5,110' md. PU - 125k, SO - 115k. 16:00 - 16:30 0.50 STWHIP P PROD1 Circulate 1 drill pipe volume to clear any debris from drillpipe. 290 gpm, 630 psi. 16:30 - 20:00 3.50 STWHIP P PROD1 PJSM w/ both night and day crews. Rig up and perform stripping drill and well kill drills. Hands from Stewart and Langham crews all had oppurtunities to work choke while either stripping in or during well kill drill. Rig down & blow down lines after drill. 20:00 - 23:30 3.50 STWHIP P PRODi POH to surface standing back all drillpipe and collars. 23:30 - 00:00 0.50 STWHIP P PROD1 Prepare rig floor to PU whipstock BHA. 2/2/2008 00:00 - 00:30 0.50 STWHIP P PROD1 Continue to prepare rig floor for picking up whipstock BHA #3. 00:30 - 03:00 2.50 STWHIP P PRODi Pick up and make up BHA #3 -Bull nose, 216' of 4.5" reconditioned tubing for space out, Baker Gen 2 whipstock, window mill, lower & upper string mills, MWD, UBHO, bumper sub, Sea 4-5/8" Spiral DC's to 608' md. 03:00 - 03:30 0.50 STWHIP P PROD1 Attempt to shallow test MWD. No response from tool. Plan to attempt after running HWDP. 03:30 - 05:00 1.50 STWHIP P PROD1 RIH on Bea stands of 4" HWDP to 1,343' md. 05:00 - 06:00 1.00 STWHIP P PROD1 Shallow test MWD. Trouble shoot lack of signal. Test - OK 06:00 - 11:30 5.50 STWHIP P PRODi Run in hole slow with Whipstock/milling assembly from 1,343' to 7,869'. PU - 200k, SO - 115k. 11:30 - 12:30 1.00 STWHIP P PRODi PU 1 joint of DP. Orient Whipstock ~ 20 decrees left of hiah side. 300 gpm, 1,750 psi, PU - 200k, SO - 115k. Set down bullnose & space out tubing at 7,948'. Set down 10k to set anchor, pick up 10k over to verity anchor set. Set down 35k to shear lug. Whipstock set for window depths of: Top of window - 7 713' bottom of window - 7 726'. Pick up and check weight: PU - 190k, SO - 115k. 12:30 - 14:30 2.00 STWHIP P PROD1 Displace well from seawater to 9.5 ppg Flo-Pro NT mud (33 yield point). Pump 50 bbls viscosified water followed by 9.5 ppg new Flo-Pro mud surface to surface at 250 gpm, ICP - 1101 psi, FCP - 1525 psi. Acquire slow pump rates. Printed: 3/12/2008 11:45:09 AM BP EXPLORATION Page 11 of 23 Operations Summary Report Legal Well Name: Z-112 Common Well Name: Z-112 Spud Date: 1/19/2008 Event Name: DRILL+COMPLETE Start: 1/16/2008 End: 2/21/2008 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 2/21/2008 Rig Name: NABORS 9ES Rig Number: i Date From - To ~ Hours Task Code NPT Phase Description of Operations ~_ : _ --- 2/2/2008 14:30 - 17:00 2.50 STWHIP P PROD1 Mill window in 7" 26# casing from 7,713' to 7,726'. 300 gpm, 1805 psi, 100 rpm, 3.4k TO, WOB - 3-5k. Pump 50 bbl viscosified super sweep pill at bottom of window. Good volumes of metal across shakers during milling and sweeps. 17:00 - 22:00 5.00 STWHIP P PROD1 Drill 20' of new hole from 7,726' to 7,746'. Pump another viscosified super sweep pill ~ 7,746' md. 300 gpm, 1,780 psi, 100 rpm, 4k TO, PU - 145k, SO - 120k, RT - 130k, WOB - 7-15k. Work through window several times without problem, with and without pumping. 22:00 - 22:30 0.50 STWHIP P PROD1 Perf rm FIT. 7 46' MD, 6,696' TVD, 9.5 ppg MW, 700 psi surface pressure = 11.51 ppQ EMW. Rig down test equipment, blow down surface lines. 22:30 - 23:00 0.50 STWHIP P PROD1 Circulate surface to surface w/ new 9.5ppg FloPro NT and bring yield point down to 24. 23:00 - 00:00 1.00 STWHIP P PROD1 Blow down lines, lay down single joint. Remove blower hose. Prepare to POH. 2/3/2008 00:00 - 04:00 4.00 STWHIP P PROD1 PJSM. Pump dry job. Blow down top drive. Prepare floor and POH with milling BHA #3 from 7,746' to 335'. 04:00 - 07:30 3.50 STWHIP P PROD1 PJSM. Lay down 9 drill collars, MWD and whipstock mills. Window mill 1/16 under gauge, lower string mill 1/8" under gauge, upper mill "in gauge". Clear floor. 07:30 - 09:30 2.00 BOPSU P PROD1 Pull wear ring. Pick up BOP stack jet sub, clean out and function BOP stack. Reinstall wear ring. Clean & clear rig floor. 09:30 - 11:00 1.50 STWHIP P PROD1 PJSM on BHA. Pick up and make up directional drilling BHA # 4. Bit # 3, 2.12deg mud motor, MWD, tea NM Flex DC and jars. 11:00 - 17:00 6.00 STWHIP P PROD1 Run in hole with BHA # 4 from 151 to 1,000'. Shallow test MWD -good. Continue RIH to 7,567', filling pipe at 2,600' and 5,000'. 17:00 - 19:30 2.50 STWHIP P PRODi Slip and cut 83' of drilling line. Service draw works. Grease Iron Roughneck. Adjust brakes. 19:30 - 20:00 0.50 STWHIP P PROD1 RIH to bottom of holeC~3 7,745' and w/ BHA # 4. 20:00 - 00:00 4.00 DRILL P PROD1 Slide drill 6-1/8" build section from 7,745'to 7,847' md, PU - 145k, SO - 115k, 1,715 psi on, 1,560 psi off, 250 gpm, Did not rotate 2.12 deg motor, AST - 2.5, 2/4/2008 00:00 - 10:00 10.00 DRILL P PROD1 Slide drill 6-1/8" ahead directionally from 7,747' to 8,124' md. 260 gpm, 2050 psi off, 2135 psi on. WOB 30k. PU - 150k, SO - 107k. No rotation due to 2.12 deg motor. AST - 7.27 hr. 6-10 b h losses be an C~ -7 965' md. Lost 87 bbls to formation from 7 965 - TD 10:00 - 10:30 0.50 DRILL P PROD1 Circulate bottoms up. PU - 150k, SO - 107k, 280 gpm, 2173 psi. 10:30 - 11:30 1.00 DRILL P PROD1 Pump out of hole from 8,124' and to 7,664' md. Wipe tight spots until clean ~ 8,110', 7,860', 7,830'. 11:30 - 12:30 1.00 DRILL P PROD1 Shut down, monitor well - no losses, no gains. Pump 15 bbl 10.5ppg dry job. Blow down topdrive. 12:30 - 16:30 4.00 DRILL P PROD1 POH with build BHA #4 from 7,664' to top of BHA ~ 180' md. Seepage losses continued.. Lost additional 40 bbls on trip out h I . 16:30 - 18:00 1.50 DRILL P PROD1 LD BHA #4. Clean and clear rig floor. Bit grade 0-1-WT-A-E-I-BHA. 18:00 - 20:00 2.00 BOPSU P PROD1 Pull wear ring, install test plug. RU for testing BOPE. 20:00 - 00:00 4.00 BOPSU P PROD1 Pressure test BOPE to 250 psi low, 3,500 psi high. Test Printed: 3/12/2008 11:45:09 AM • BP EXPLORATION Page 12 of 23 Operations Summary Report Legal Well Name: Z-112 Common Well Name: Z-112 Spud Date: 1/19/2008 Event Name: DRILL+COMPLETE Start: 1/16/2008 End: 2/21/2008 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 2/21/2008 Rig Name: NABORS 9ES Rig Number: Date i From - To I Hours Task Code NPT + Phase Description of Operations -' - -- 2/4/2008 20:00 - 00:00 4.00 BOPSU P PROD1 annular to 250 psi low, 3,500 psi high. Hold each test for 5 minutes. Perform accumulator drawdown test. Witnessing of test waived by AOGCC rep Chuck Scheve. Test witnessed by BP WSL M. Martyn and NAD TP T. Leigh. 2/5/2008 00:00 - 01:00 1.00 BOPSU P PROD1 Finish pressure test of BOPE to 250 psi low, 3,500 psi high. Test annular to 250 psi low, 3,500 psi high. Hold each test for 5 minutes. Perform accumulator drawdown test. Witnessing of test waived by AOGCC rep Chuck Scheve. Test witnessed by BP WSL M. Martyn and NAD TP T. Leigh. 01:00 - 02:00 1.00 BOPSU P PROD1 RD from BOPE test. Blow down lines. 02:00 - 03:00 1.00 DRILL P PROD1 PJSM. Begin PU horizontal drilling BHA #5 - RSX613M-A2 6-1/8" PDC bit, 4.75" powerdrive Rotary Steerable Assy, Periscope MWD. 03:00 - 03:30 0.50 DRILL P PROD1 Service topdrive & drawworks. 03:30 - 05:00 1.50 DRILL N WAIT PROD1 Wait on handling sub hot shot for picking up Periscope. 05:00 - 07:30 2.50 DRILL P PROD1 Continue MU BHA #5 -MWD Impulse, ADN, tea NM Flex DC, CCV, XO, Jars 07:30 - 08:00 0.50 DRILL P PROD1 RIH w/ BHA #5 to 1,539'. 08:00 - 08:30 0.50 DRILL P PROD1 Shallow test MWD &powerdrive - OK. 240 gpm, 1400 psi, Blow down top drive. 08:30 - 12:00 3.50 DRILL P PROD1 RIH w/ BHA #5 from 1,593' to 7,894' md. Fill pipe and break circulation at 7,615' md. 240 gpm, 2040 psi, PU - 140k, SO - 115k. Take slow pump rates. 12:00 - 13:30 1.50 DRILL P PROD1 Work BHA through tight hole and doglegs from 7,894' and to 8,122' md. Down drag of 30-40k and overpulls of 20k. Did not rotate across high dogleg intervals. Pumped 240 gpm, 2108 psi while working pipe. 13:30 - 14:30 1.00 DRILL N WAIT PROD1 Wait on software issues. Data not transmitting correctly to town systems. Troubleshoot and correct. Downlink to Powerdrive while standing by. 14:30 - 00:00 9.50 DRILL P PROD1 Directionally drill 6-1/8" hole from 8,124' - 8,690' md. Survey every 30'. Control drilling at 150 - 175 fph for logging tools. 240 gpm, 1955 psi on, 1945 psi off. 110 rpm, 5-6k tq on, 4-5k tq off. PU - 140k, SO - 115k. RTW - 120k. 10-15k WOB. Drilling Time - 3.90 hrs 2/6/2008 00:00 - 06:00 6.00 DRILL P PROD1 Directionally drill 6-1/8" hole from 8,690' - 9,059' md. Survey every 30'. Control drilling at 175 - 200 fph for logging tools. 240 gpm, 1955 psi on, 1945 psi off. 110 rpm, 5-6k tq on, 4-5k tq off. PU - 152k, SO - 115k. RTW - 136k. 12-20k WOB. Fluid losses at -10 b h. 06:00 - 12:00 6.00 DRILL P PROD1 Directionally drill 6-1/8" hole from 9,059' - 9,515' md. Survey every 30'. Control drilling at 175 - 200 fph for logging tools until downlinking and increasing the data rate C~3 09:30 245 gpm, 2020 psi on, 2060 psi off. 110 rpm, 5-6k tq on, 4-5k tq off. PU - 155k, SO - 112k. RTW - 134k. 11-20k WOB. Fluid losses at ~10 b h. i20 I I 12:00 - 00:00 12.00 DRILL P PROD1 Directionally drill 6-1/8" hole from 9,515' - 10,274' md. Printed: 3/12/2008 11:45:09 AM • • BP EXPLORATION Operations Summary Report Legal Well Name: Z-112 Common Well Name: Z-112 Event Name: DRILL+COMPLETE Contractor Name: NABORS ALASKA DRILLING Rig Name: NABORS 9ES Date From --To 'Hours Task Code NPT ~ -_ 2/6/2008 12:00 - 00:00 12.00 DRILL P Start: 1 /16/2008 Rig Release: 2/21 /2008 Rig Number: Page 13 of 23 ~ Spud Date: 1 /19/2008 End: 2/21 /2008 Phase Description of Operations PROD1 Survey every 30'. 242 gpm, 2135 psi on, 2100 psi off. 115 rpm, 4-6k tq on, 2-4k tq off. PU - 150k, SO - 110k. RTW - 130k. 13-20k WOB. Weil took 30 bbls of fluid ~ -9,750 after breaking 12/7/2008 100:00 - 06:00 I 6.001 DRILL I P I I PROD1 06:00 - 12:00 I 6.001 DRILL I P I I PROD1 12:00 - 21:00 I 9.001 DRILL I P I I PRODi 21:00 - 23:00 I 2.001 DRILL I N I DFAL I PROD1 23:00 - 00:00 I 1.001 DRILL I N I DFAL I PROD1 2/8/2008 100:00 - 04:30 I 4.501 DRILL I N I DFAL I PROD1 04:30 - 06:45 I 2.251 DRILL I N I DFAL I PROD1 06:45 - 08:30 I 1.751 DRILL I N I DFAL I PROD1 08:30 - 10:00 ~ 1.50 ~ DRILL ~ N ~ DFAL ~ PROD1 Drilling time for day - 11.71 hrs Directionally drill 6-1/8" hole from 10,274' - 10,670' md. Survey every 30'. 247 gpm, 2150 psi on, 2145 psi off. 100-115 rpm, 5-9.5k tq on, 5k tq off. PU - 160k, SO - 110k. RTW - 132k. 12-17k WOB. Fluid losses at -10-15 boh. Directionally drill 6-1/8" hole from 10,670' - 10,828' md. Survey every 30'. 240 gpm, 2175 psi on, 2175 psi off. 110 rpm, 8k tq on, 5k tq off. PU - 158k, SO - 105k. RTW - 128k. 5-15k WOB. Fluid losses at ~10 bph. 125 bbls lost from 00:01 - 12:00. Work tough stringers C~3 10444', 10518', 10670' - 10718', 10825'. Directionally drill 6-1/8" hole from 10,828' - 10,962' md. Fighting to break through into KupC4 but unable to drill through hard stringer above us. Consult Anchorage team. Work plan to drop angle and build up to higher incident angle. Drop angle to 84 deg by 10,962' Survey every 30'. 240 gpm, 2155 psi on, 2025 psi off. 115 rpm, 6k tq on, 5k tq off. PU - 155k, SO - 110k. RTW - 130k. 5-10k WOB. Fluid losses at -10 bph. 124 bbls lost from 12:00 - 23:59. Drilling time for day - 16.25 hrs MW D stopped transmitting any data or turning on at all. Troubleshoot but no success. CBU. Monitor well -losing -5 bph static. POH w/ rotary steerable assembly from 10,962' to 10,405'. Well not swabbing. POH with rotary steerable BHA for MWD failure from 10,405' and to 8,345' md. Hole not swabbing. Pulling 20-30k over to work pipe when needed. Backream 1 stand out of hole ~ 9,870' md. Work pipe out of hole 5 stands from 8,709' to 8,345' md. Bring pumps online and work BHA into build section without rotation ~ 8,345' md. Pull 35k over at 8,334' and and unable to POH, RIH or Rotate. No problems circulating or pressure increases. 200 gpm, 1350 psi. Work pipe. Jar down and out of tight spot. Return to normal PU - 146k, SO - 115k, RTW - 134. Rotate and reciprocate while circulating. 235 gpm, 1750 psi. 15 rpm, 3k TO. Pump out of hole 6 stands from 8,345' to top of casing window Printed: 3/12/2008 11:45:09 AM "" • BP EXPLORATION Page 14 of 23 Operations Summary Report Legal Well Name: Z-112 Common Well Name: Z-112 Spud Date: 1/19/2008 Event Name: DRILL+COMPLETE Start: 1/16/2008 End: 2/21/2008 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 2/21/2008 Rig Name: NABOBS 9ES Rig Number: Date ~ From - To Hours Task 'Code NPT Phase ~ Description of Operations -- 2/8/2008 08:30 - 10:00 1.50 DRILL N DFAL PROD1 ~ 7,713' md. 180 gpm, 1040 psi. Pull first stand without rotation with up to 35k overpulls - no swabbing. Pull 40k over on second stand and begin rotating at 10-15 rpm w/ 5k TO. Saw no overpulls more than 3-5k while rotating and pulling slowly. Pulled last 4 stands w/ pumps only and no rotation. Saw four 25-30k overpulls in next three stands and no overpulls in last stand into window. PU - 150k. 10:00 - 11:00 1.00 DRILL N DFAL PROD1 Drop ball to open CCV. Pump down at 85 gpm, 430 psi. Open CCV and CBU ~ 450 gpm, 1770 psi. Shut down -monitor well - slow losses. Pump 15 bbl 11 ppg dry job. 11:00 - 11:30 0.50 DRILL N DFAL PROD1 Blow down topdrive. Remove blower hose. Install air slips. RU for POH. 11:30 - 16:00 4.50 DRILL N DFAL PROD1 POH with 6-1/8" RSS Drilling BHA #5 from 7,615' to 600' md. 16:00 - 17:00 1.00 DRILL N DFAL PROD1 Drop ball to close CCV and pump down at 80 gpm, 70 psi. Toggle CCV closed at 1740 psi. Pump through BHA at 70 gpm, 154 psi. Blow down top drive. PJSM for laying down BHA #5. 17:00 - 20:30 3.50 DRILL N DFAL PROD1 Lay down BHA #5. Bit grade 3- 2- ER- A- X- I- LC- BHA. 20:30 - 00:00 3.50 DRILL N DPRB PROD1 PJSM. Make up BHA#6 - 6.125" bull nose hole opener, Bit sub, 60' - 4.75" DC's, 6.13" OD Straight blade stab, 90' - 4.75" DC's, 6.0" OD Spiral Stab, 10' Lead Colar, 5.81" OD Spiral Stab, 30' - 4.69" DC, 4" DP, 4" HWDP, Jars, 4" HWDP. 2/9/2008 00:00 - 01:30 1.50 DRILL N DPRB PROD1 Continue make up BHA#6 - 6.125" bull nose hole opener, Bit sub, 60' - 4.75" DC's, 6.13" OD Straight blade stab, 90' - 4.75" DC's, 6.0" OD Spiral Stab, 10' Lead Colar, 5.81" OD Spiral Stab, 30' - 4.69" DC, 4" DP, 4" HWDP, Jars, 4" HWDP. 01:30 - 05:30 4.00 DRILL N DPRB PROD1 RIH w/ BHA #6 from 215' to 7,600' md. PU - 131 k, SO - 118k. 05:30 - 06:00 0.50 DRILL N DPRB PROD1 Connect blower hose to topdrive. Screw into string. Take parameters. 06:00 - 09:30 3.50 DRILL N DPRB PROD1 Attempt to run into open hole w/ BHA #6 w/o pumps. Slack off 20k ~ 7,780' md. Pick up and bring pumps online. Wash and ream hole from 7,777' bit depth to 8,462' md. Limit torque to 5k and reduce rotation to -10-15 rpm while any stabilizers crossing window. Reaming tight spots at 7777, 8037, 8150, 8164, 8350. 310 gpm, 1485 psi, PU - 165k, SO - 125k, RTW - 135k, TO - 4-9k. Increase in cuttings seen across shakers at bottoms up from beginning to ream. Pumping losses - 10 bph 09:30 - 11:00 1.50 DRILL N DPRB PROD1 Backream from 8,462' and to 7,897' md. 310 gpm, 1485 psi, PU - 165k, SO - 125k, RTW - 135k, TO - 4-9k. Work tight spots (15k overpulls) at 8325 & 8185 on way out. Cuttings across shakers cleaned up after bottoms up from reamer outside of high doglegs. 11:00 - 12:00 1.00 DRILL N DPRB PROD1 Shut down pumps and rotation. Trip in hole from 7,897' - 7,462' and back out to 7,686' md. Hole in great shape. No overpulls or set downs greater than 5k in either direction. 12:00 - 13:00 1.00 DRILL N DPRB PRODi CBU 240 gpm, 980 psi. Shut down monitor well. 13:00 - 17:30 4.50 DRILL N DPRB PROD1 POH from 7,686' and to BHA ~ 215'. 17:30 - 19:45 2.25 DRILL N DPRB PROD1 PJSM. Lay down BHA #6. Reamers all in gauge. 19:45 - 23:00 3.25 DRILL N DFAL PROD1 PJSM. MU horizontal drilling BHA #7 - RSX613M-A2 6-1/8" PDC bit, 4.75" powerdrive Rotary Steerable Assy, Periscope, MWD Impulse, ADN, tea NM Flex DC, CCV, XO, Jars. 23:00 - 23:30 0.50 DRILL N DFAL PROD1 RIH w/ BHA #7 to 1,043'. 23:30 - 00:00 0.50 DRILL N DFAL PROD1 Shallow test MWD &powerdrive - OK. 240 gpm, 1300 psi, Printed: 3/72/2008 11:45:09 AM • BP EXPLORATION Page 15 of 23 Operations Summary Report Legal Well Name: Z-112 Common Well Name: Z-112 Spud Date: 1/19/2008 Event Name: DRILL+COMPLETE Start: 1/16/2008 End: 2/21/2008 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 2/21/2008 Rig Name: NABORS 9ES Rig Number: Date From - To ': Hours Task Code NPT Phase Description of Operations 2/9/2008 23:30 - 00:00 0.50 DRILL N DFAL PROD1 blow down top drive. Install air slips. 2/10/2008 00:00 - 03:30 3.50 DRILL N DFAL PROD1 RIH w/ BHA #7 from 1,043' to 7,585' md. 03:30 - 06:00 2.50 DRILL P PROD1 PJSM. Cut & Slip drilling line. Service topdrive & crown. Clean out under draw works. 06:00 - 06:30 0.50 DRILL N DFAL PROD1 Fill pipe and break circulation at 7,585' md. 240 gpm, 1830 psi, PU - 151 k, SO - 122k. Take slow pump rates. 06:30 - 08:15 1.75 DRILL N DFAL PROD1 RIH from window through build section and to 9,915' md. PU - 175k, SO - 95k Wash & ream from 9915'to 10,040' Run in hole from 10,040'- 10,868' 08:15 - 10:30 2.25 DRILL N DFAL PROD1 Bring pumps online and wash to TD ~ 10,962' md. Record slow pump rates. 10:30 - 12:00 1.50 DRILL P PROD1 On Bottom Gamma values reading zero,discuss w/Anchorage team,decide to drill ahead. Directionally drill 6-1/8" hole from 10,962' - 11,000' md. Surrey every 30'. 240 gpm, 2100 psi on, 2080 psi off. 110 rpm, 8-10k tq on, 6k tq off. PU - 160k, SO - 105k. RTW - 130k. 5k WOB. Fluid losses at -1 b h. 24 bbls lost from 00:01 - 12:00. 12:00 - 22:00 10.00 DRILL P PROD1 Directionally drill 6-1/8" hole from 11,000' - 11,441' md. Survey every 30'. 240 gpm, 2180 psi on, 2150 psi off. 110 rpm, 8-10k tq on, 6k tq off. PU - 155k, SO - 105k. RTW - 130k. 5-10k WOB. 106 bbls lost from 12:00 - 23:59. Drilling time for day - 07.04 hrs 22:00 - 22:30 0.50 DRILL P PROD1 Circulate 1 1/2 x bottoms up sample to confirm drilling In Kalubik. 240 GPM @ 2150 psi. Mud wt in and out 9.5 ppg. Monitor well, Static 22:30 - 00:00 1.50 DRILL N DPRB PROD1 POOH for Mud motor to sidetrack well riot to intersectin Kalubik formation. Pulled with 20k drag through new hole with periodic 30-50k. Worked through spots 30-50k,clean. 2/11/2008 00:00 - 02:00 2.00 DRILL N DPRB PROD1 POOH for Mud motor to sidetrack well prior to intersecting Kalubik formation. Hole in good condition in previously drilled hole,pulled 40k over at 9756',worked through,clean. 02:00 - 03:00 1.00 DRILL N DPRB PROD1 Pull into window and drop circulating sub dart. Circulate bottoms up at 430 GPM ~ 1617 psi. 03:00 - 06:30 3.50 DRILL N DPRB PROD1 Trip out of hole from 7587' - 200'. Monitor well,losses C~ 4 bbl/hr. 06:30 - 09:00 2.50 DRILL N DPRB PROD1 PJSM with Schlumberger. Handle and lay down radioactive sources. Rack back collars, Lay down MWD and Power Drive unit. Clear floor. 09:00 - 12:00 3.00 DRILL N DPRB PROD1 Make up BHA 37' to 182'. Load radioactive sources,trip in to 1117' and shallow test MWD,240 GPM ~ 1000 psi 12:00 - 16:00 4.00 DRILL N DPRB PRODi Trip in hole from 1117' to above window ~ 7665'. Printed: 3/12/2008 11:45:09 AM BP EXPLORATION Page 16 of 23 Operations Summary Report Legal Well Name: Z-112 Common Well Name: Z-112 Spud Date: 1/19/2008 Event Name: DRILL+COMPLETE Start: 1/16/2008 End: 2/21/2008 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 2/21/2008 Rig Name: NABOBS 9ES Rig Number: Date From - To Hours Task Code NPT Phase I Description of Operations 2/11/2008 12:00 - 16:00 4.00 DRILL N DPRB PROD1 Record slow pump rates and orient toolface prior to exiting window. 16:00 - 18:30 2.50 DRILL N DPRB PROD1 Blow down top drive and continue in hole from 7665' to 11,151' 20-50k needed to push through ledges in horizontal section. Make up top drive and wash down to 11,240',240 GPM ~ 2219 psi. 18:30 - 23:00 4.50 DRILL P PROD1 Trou h low side of hole and initiate sidetrack at 11 240' Up wt. 155k,down wt. 100k. 240 GPM C~3 1940 psi on bottom and 1870 psi off bottom. Mud wt in and out 9.5 ppg. onfirm well sidetrack d with near bit inclination, drill ahead to 11,305'. Bottoms up brought back large volume of cutting from trip in. 23:00 - 00:00 1.00 DRILL P PRODi Wash and ream sidetrack area. Attempt to get into old well, successful. Wash and ream sidetrack area 2 more times. ttem t to orient hi si a into of hole unsuccessful. 2/12/2008 00:00 - 07:30 7.50 DRILL P PROD1 Directionally drill 6-1/8" hole from 11,305' - 11,530'. Survey every 30'. 240 gpm, 2170 psi on, 1,900 psi off. 60 rpm, 6-7k tq on, 6k tq off. PU - 155k, SO - 105k. RTW - 130k. 2-10k WOB. Mud wt in and out 9.5 ppg,Vis 46 07:30 - 09:00 1.50 DRILL N DFAL PRODi Attempt to downlink MWD bit rate from 6 bps to 3 bps without success. 09:00 - 12:30 3.50 DRILL P PROD1 Directionally drill 6-1/8" hole from 11,530' - 11,716'. Survey every 30'. 260 gpm, 2,380 psi on, 2,200 psi off. 60-80 rpm, 6-7k tq on, 6k tq off. PU - 160k, SO - 100k. RTW - 130k. 2-10k WOB AST - 2.5 hrs, ART - 2.35 hrs. Mud wt in and out 9.5 ppg, Vis 44 *Lost 121 I 12:30 - 14:00 1.50 DRILL N DFAL PROD1 Attempt to downlink MWD bit rate from 6 bps to 3 bps without success. 14:00 - 15:30 1.50 DRILL P PROD1 Directionally drill 6-1/8" hole from 11,716' - 11,854'. Survey every 30'. 270 gpm, 2,320 psi on, 2,215 psi off. 60-80 rpm, 6-7k tq on, 6k tq off. PU - 160k, SO - 100k. RTW - 130k. 2-10k WOB Mud wt in and out 9.5 ppg, Vis 46 15:30 - 16:30 1.00 DRILL N DFAL PROD1 Successfully downlink MWD bit rate from 6 bps to 3 bps. 16:30 - 00:00 7.50 DRILL P PROD1 Directionally drill 6-1/8" hole from 11,854' - 12,201'. Survey every 30'. 260 gpm, 2,360 psi on, 2,200 psi off. 60 rpm, 6-7k tq on, 5-6k tq off. PU - 155k, SO - 100k. RTW - 130k. 3-10k WOB AST- 1.31 hrs, ART - 4.18 hrs Mud wt in and out 9.5 ppg, Vis 47. *Lost total of 65 bbls of mud from no t 2/13/2008 00:00 - 12:00 12.00 DRILL P PROD1 Directionally drill 6-1/8" hole from 12,201' to 12,933'. Survey every 30'. 244 gpm, 2,450 psi on, 2,200 psi off. 60 rpm, 7-9k tq on, 6-7k Printed: 3/12/2008 11:45:09 AM ~ i BP EXPLORATION Page 17 of 23 Operations Summary Report Legal Well Name: Z-112 Common Well Name: Z-112 Spud Date: 1/19/2008 Event Name: DRILL+COMPLETE Start: 1/16/2008 End: 2/21/2008 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 2/21/2008 Rig Name: NABOBS 9ES Rig Number: Date From - To Flours Task Code NPT Phase Description of Operations 12/13/2008 100:00 - 12:00 I 12.001 DRILL I P 12:00 - 00:00 I 12.001 DRILL I P 12/14/2008 100:00 - 03:00 I 3.001 DRILL I P 03:00 - 04:30 I 1.501 DRILL I P 04:30 - 21:30 I 17.001 DRILL I P 21:30 - 23:00 1.501 DRILL P 23:00 - 00:00 I 1.001 DRILL I P 2/15/2008 100:00 - 03:30 I 3.501 DRILL I P 03:30 - 07:30 ~ 4.00 DRILL P 07:30 - 09:30 I 2.001 DRILL I P PROD1 tq off. PU - 160k, SO - 95k. RTW - 125k, WOB - 5-10k AST - 2.10 hrs, ART - 4.16 hrs. Mud wt in and out 9.5 ppg, Vis 46 *Lost 88 bbls of mud from midnight to noon. *Pumped high Vis sweep at 12,500', surface to surface with 30% increase in cuttings when back to surface. PRODi Directionally drill 6-1/8" hole from 12,933' to 13,456'. Survey every 30'. 240 gpm, 2,380 psi on, 2,100 psi off. 60 rpm, 8-9k tq on, 6-7k tq off. PU - 165k, SO - 85k. RTW - 125k, WOB - 5-10k AST- 1.76 hrs, ART - 5.08 hrs Mud wt in and out 9.5 ppg, Vis 42. *Lost total of 115 bbls of mud from noon to midni ht. *Pumped high Vis sweep at 13,000', surface to surface with no increase in cuttings when back to surface. PROD1 Directionally drill 6-1/8" hole from 13,456' to TD C~ 13,600' MD. 6 r, 2/14/2008 Survey every 30'. 240 gpm, 2,350 psi on, 2,175 psi off. 60 rpm, 8-9k tq on, 7k tq off. PU - 165k, SO - 85k. RTW - 125k, WOB - 5-10k AST- 0.00 hrs, ART - 2.41 hrs. Mud wt in and out 9.5 ppg, Vis 45. PROD1 Circulate 11.5 ppg weighted sweep surface to surface with 60% increase in cuttings with sweep back to surface. 250 gpm, 2,555 psi ICP, 2.310 psi FCP. 60 rpm, 7.7k tq. PROD1 Backream hole C~ 500 - 600 fph from 13,600' to 8,378'. Slow down to 250 fph and MadPass log liner packer setting depths, 40' below and 40' above. 240 gpm, 2,150 psi ICP, 1,800 psi FCP. 60 rpm, 7k initial tq, 3.4k final tq. PROD1 Stop rotating, orient bit to high side. Pump out of hole at 600 fph to from 8,378' to 7,646'. 245 gpm, 1,680 psi. Shut down pump and pull bit through window to 7,600' PROD1 Circulate and reciprocate bottoms up at 242 gpm, 1,580 psi. No rotation. Slowdown topdrive. Observe well - OK. *Lost 84 bbls on midnight to noon tour. *Lost 50 bbls on noon to midnight tour. *134 bbls total lost for the da . PROD1 Cut and slip drilling line 67'. Cleanout from under drawworks. Inspect brakes - OK. Full service on topdrive and drawworks. Service blocks and crown. PROD1 Run in hole from 7,600' to 13,540' without problem'. Precautionary wash from 13,540' to bottom C~ 13,600'. No fill. 250 gpm, 2,400 psi, 60 rpm, 6k TO. PRODi Circulate bottoms up. Pump 40 bbl 11.5 ppg weighted sweep surface to surface with no increase in cuttings when sweep was back to surface. 250 gpm, 2,400 psi, 60 rpm, 6-7k TO PU - 165k, SO - 85k, RWT - 125k. Printed: 3/12/2008 11:45:09 AM • BP EXPLORATION Page 18 of 23 Operations Summary Report Legal Well Name: Z-112 Common Well Name: Z-112 Spud Date: 1/19/2008 Event Name: DRILL+COMPLETE Start: 1/16/2008 End: 2/21/2008 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 2/21/2008 Rig Name: NABOBS 9ES Rig Number: Date I, From - To Hours Task ~ Code NPT Phase i Description of Operations 2/15/2008 07:30 - 09:30 2.00 DRILL P PROD1 Monitor well - OK. MW - 9.5 ppg in and out. 09:30 - 16:00 6.50 DRILL P PROD1 POH from 13,600' to 13,445' racking stands back in derrick. Continue POH laying down drill pipe from 13,445' to 8,400'. No overpulls or other problems. 16:00 - 19:00 3.00 DRILL P PROD1 MadPass log without rotating from 8,400' to 7,750'. Shut down pump and pull bit through window. 240 gpm, 2,400 psi, PU - 145k, SO - 125k. 19:00 - 20:30 1.50 DRILL P PRODi Pump dart down ~ 3 bpm, 500 psi. Open Baker Circ sub ~ 2,100 psi. Increase pump rate to 502 gpm, 2,020 psi. No increase in cuttings observed with bottoms up. Observe well - OK. MW - 9.5 ppg in and out. 20:30 - 00:00 3.50 DRILL P PROD1 POH racking back stands in derrick from 7,713' to 1,120'. 2/16/2008 00:00 - 00:30 0.50 DRILL P PROD1 Continue POH from 1,120' to BHA ~ 180'. Monitor well - OK. 9.5 ppg MW in and out. 00:30 - 03:30 3.00 DRILL P PROD1 PJSM on removing nuclear source. Laydown BHA. Motor bearings were shot. Bitgrade:l -1 -WT-A-X-N-NO-TD 03:30 - 04:00 0.50 DRILL P PROD1 Clear and clean rig floor. 04:00 - 07:00 3.00 CASE P RUNPRD Rig u to run 4.5" MPAS liner. 07:00 - 12:00 5.00 CASE P RUNPRD PJSM. Run in hole with MPAS liner assembly. Pick up shoe joint and run in hole with 4.5" 12.6# L-80 IBT-M slotted (6 Jts). 2 'oints of 4" 9.5# L-80 IBT solid liner, 43 'ts of 4.5" 12.6# L-80 IBT-M liner with 2 MPAS ackers and 1 slidin sleeve in the hole to 2 240'. 4" torged to 3,200 ft/Ibs 4.5" torqued to 3,500 ft/Ibs Used Best O Life thread compound *~ost 31 bbls of mud from midni ht to noon. 12:00 - 20:00 8.00 CASE P RUNPRD Continue running in hole with MPAS liner assembly from 2,240' to 5,951'. PU - 105k, SO - 83k. Ran total of 6 joints of 4.5" 12.6# L-80 IBT-M Slotted liner. 2 joints of 4.0" 9.5# L-80 IBT Solid liner. 128 jts of 4.5" 12.6# L-80 IBT-M Solid liner 5 space out pup joints 5 MPAS Packers and 6 Sliding sleeves ran in the open position. 20:00 - 22:00 2.00 CASE P RUNPRD Rig down liner running equipment. Rig up to run 2 7/8" Fox tubing inner strip 22:00 - 00:00 2.00 CASE P RUNPRD Run in hole with 2 7/8" Fox tubing inner string to 603'. Torque to 2,390 ft/Ibs Used Seal Guard Jet Lub thread compound'. *Lost 27 bbls of mud from noon to midnight. *Total loss for the day - 58 bbls 2/17/2008 00:00 - 07:00 7.00 CASE P RUNPRD Continue running in hole with 2 7/8" inner string from 608' to 5,864'. PU - 77k, SO - 63k. Tagged slick stick into pack-off bushing for space out. Laydown 1 jt of inner string tubing. Space out to set slick stick into pack-off bushin . 07:00 - 08:30 1.50 CASE P RUNPRD Rig up to circulate down inner string. Set 5k down on pack-off bushing. Pressure test to 1,200 psi - 5 min - OK. Pressure up and shear out ball seat ~ 1,400 psi. 08:30 - 09:30 1.00 CASE P RUNPRD Laydown tubing space out pup. Make up X-over from 2 7/8" Printed: 3/12/2008 11:45:09 AM ~ i BP EXPLORATION Page 19 of 23 Operations Summary Report Legal Well Name: Z-112 Common Well Name: Z-112 Spud Date: 1/19/2008 Event Name: DRILL+COMPLETE Start: 1/16/2008 End: 2/21/2008 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 2/21/2008 Rig Name: NABORS 9ES Rig Number: Date From - To I Hours ~ Task Code NPT ! Phase Description of Operations 2/17/2008 08:30 - 09:30 1.00 CASE P RUNPRD Fox to 2 3/8" EUE. Change elevators to 4". Pick up and make up Baker HMC hyd set liner hanger and Baker C-2 ZXP liner to acker. PU - 147k, SO - 118k. 09:30 - 10:30 1.00 CASE P RUNPRD Cross over to 4" HT-40 and run in hole 2 single joints of drill pipe to 6,059'. Circulate inner string volume 31 bbls C~ 80 gpm, 650 psi. Blowdown topdrive. 10:30 - 12:30 2.00 CASE P RUNPRD Run in hole on drill pipe with 4.5" MPAS liner from 6,059' to 7,650'. )aAud flowing back up the drill pipe when running faster than 15 feet er minute. Mix dry job. PU - 171 k, SO - 125k. 'Lost 28 bbls of mud from midni ht to noon. 12:30 - 14:30 2.00 CASE P RUNPRD Circulate bottoms up (140 bbls) at 95 gpm, 650 psi. Break out and blowdown topdrive. Pump dry job. Break out and blowdown topdrive. Monitor well - OK. 9.5 ppg mud in and out. 14:30 - 20:00 5.50 CASE P RUNPRD Run liner in open hole from window to bottom C~ 13,600', hole was slick. On depth. PU - 220k, SO - 95k. Pick up off bottom to setting depth of 13,590'. Set string in neutral weight. 20:00 - 21:30 1.50 CASE P RUNPRD Break connection and drop 5/8" setting ball. Circulate down ball to seat ~ 64 gpm, 980 psi. 21:30 - 22:30 1.00 CASE P RUNPRD Seat ball and pressure up to 1,500 psi to set liner hanger, slack off 60k and hold for 5 minutes. Pressure up to 2,500 to release HRD running tool and hold for 5 minutes. Pick up to confirm running tool released to 250k - No Go. Slack back off and set down 60k. Pressure up to 3,050 and hold for 2 minutes.. Bleed off pressure pick up to confirm running tool released. Free weight - 180k. Pressure up to 3,500 psi to test PPIT and Cup tool and hold for 5 minutes - OK. Bleed off pressure. Pick up Rotating dog sub out of liner top, slack off and set down 50K `i ~ to weight set ZXP packer, positive indication of shear. Pick up ~ P ~ and slack off to confirm packer set. Pressure test annulus to i ` 1,500 si for 5 minutes - OK. Pull and rack back 1 stand. Make up top drive and pick up Collet to MPAS packer #1 ~ 13,115'. Observe 10k over pull through reduced ID and pick up through the packer. Go back down below packer. Pick back up until 5k overpull observed. Pressure u to 3,500 si to set acker and hold for 10 minutes. Bleed off pressure. Blowdown topdrive. 22:30 - 00:00 1.50 CASE P RUNPRD Laydown drill pipe from 13,112 to 12,481'. (Indicating collet depths) 'Lost total of 43 bbls from noon to midnight. `70 bbls total lost for the da 2/18/2008 00:00 - 09:00 9.00 CASE P RUNPRD continue laying down drill pipe and setting MPAS packers from 12,481 to -7,940'. Indicatin collet de the Repeated packer setting as on MPAS packer #1. Set MPAS packer #2 C~3 11,852'. Set MPAS packer #3 ~ 10,115'. Set MPAS packer #4 ~ 8,368'. Set MPAS packer #5 ~ 7,940'. *30 minutes setting each packer 4.5" Howco Float Shoe Set ~ 13590.00 Tops: Printed: 3/12/2008 11:45:09 AM BP EXPLORATION Page 20 of 23 Operations Summary Report Legal Well Name: Z-112 Common Well Name: Z-112 Spud Date: 1/19/2008 Event Name: DRILL+COMPLETE Start: 1/16/2008 End: 2/21/2008 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 2/21/2008 Rig Name: NABOBS 9ES Rig Number: Date From - To ~ Hours Task Code NPT Phase Description of Operations 2/18/2008 00:00 - 09:00 -- 9.00 CASE P - RUNPRD - -- 1 Jt 4.5" 12.6# L-80 IBT-M Solid Liner (Shoe Jnt) 13,547' 4.5" Baker Type II landing Collar 13,547' 1 Jt 4.5" 12.6# L-80 IBT-M Solid Liner (#1) 13,506' 4.5" Baker Drillable Packoff Bushing 13,504' 6 Jts 4.5" 12.6# L-80167-M Slotted Liner (#2-#7) 13,262'' 4.5" 12.6# L-80 IBT-M Pup Joint 13,242' Crossover 4" IBT Box to 4 1/2" IBT-M Pin 13,241' 2 Jts 4" 9.5# IBT (Locating Cup Tool) 13,178' Crossover 4.5" IBT-M Box to 4" IBT Pin 13,177' 1 Jt 4.5" 12.6# L-80 IBT-M Solid Liner (#2) 13,136' Crossover 4.5" New VAM Box to 4.5" IBT-M Pin 13,127' AApas Hyrdraulic Set Formation Packer #1 13,112' Crossover 4.5" IBT-M Box to 4.5" New VAM Pin 13,104' 27 Jts 4.5" 12.6# L-80 IBT-M Liner (#3 - #29) RA on #29 11,996' 4.5" 12.6# L-80 IBT-M Pup Joint w/Centralizer 11,988' Sliding Sleeve Assembly #1 11,984' 4.5" 12.6# L-80 IBT-M Pup Joint w/Centralizer 11,974' 2 Jts 4.5" 12.6# L-80 IBT-M Liner (#30-#31) 11,894' 4.5" 12.6# L-80 IBT-M Pup Joint 11,874' Crossover 4.5" New VAM Box to 4.5" IBT-M Pin 11,866' Mpas Hyrdraulic Set Formation Packer #2 11,850' Crossover 4.5" IBT-M Box to 4.5" New VAM Pin 11,843' 23 Jts 4.5" 12.6# L-80 IBT-M Liner(#32-#54) RA on #54 10,897' 4.5" 12.6# L-80 IBT-M Pup Joint w/Centralizer 10,889' Sliding Sleeve Assembly #2 10,885' 4.5" 12.6# L-80 IBT-M Pup Joint w/Centralizer 10,875' 20 Jts 4.5" 12.6# L-80 IBT-M Liner (#55 #74) 10,054' 4.5" 12.6# L-80 IBT-M Pup Joint 10,034' Crossover 4.5" New VAM Box to 4.5" IBT-M Pin 10,026' MPas Hyrdraulic Set Formation Packer #3 10,011' Crossover 4.5" IBT-M Box to 4.5" New VAM Pin 10,003' 20 Jts 4.5" 12.6# L-80 IBT-M Liner (#75-#94) RA on #94 9,179' 4.5" 12.6# L-80 TCII Box x167-M Pin PJ w/Centralizer 9,169' Sliding Sleeve Assembly #3 9,165' 4.5" 12.6# L-80 IBT-M Box xTCll Pin PJ w/Centralizer 9,155' 18 Jts 4.5" 12.6# L-80 IBT-M Liner (#95 - #112) 8,417' Sea 4.5" 12.6# L-80 IBT-M PJ's (19.86', 7.81', 2.09') 8,387' Crossover 4.5" New VAM Box to 4.5" IBT-M Pin 8,379' tines Hyrdraulic Set Formation Packer #4 8,364' Crossover 4.5" IBT-M Box to 4.5" New VAM Pin 8,356' 7 Jts 4.5" 12.6# L-80 IBT-M Liner (#113 - #119) 8,069' 4.5" 12.6# L-80 TCII Box x167-M Pin PJ w/Centralizer 8,059' Sliding Sleeve Assembly #4 8,055' 4.5" 12.6# L-80 IBT-M Box x TCII Pin PJ w/Centralizer 8,045' 2 Jts 4.5" 12.6# L-80 IBT-M Liner (#120 - #121) 7,962' 4,5" 12.6# L-80 IBT-M Pup Joint 7,955' Mpas Hyrdraulic Set Formation Packer #5 7,939' 4.5" 12.6# L-80 IBT-M Pup Joint 7,932' 4 Jts 4.5" 12.6# L-80 IBT-M Liner (#122 - #125) 7,767' 4.5" 12.6# L-80 IBT-M Pup Joint w/Centralizer 7,759' Printed: 3/12/2008 11:45:09 AM ~ ~ BP EXPLORATION Operations Summary Report Legal Well Name: Z-112 Common Well Name: Z-112 Event Name: DRILL+COMPLETE Start: 1/16/2008 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 2/21/2008 Rig Name: NABOBS 9ES Rig Number: Date I From - To I Hours I Task I Code I NPT I Phase 2/18/2008 100:00 - 09:00 09:00 - 09:30 09:30 - 15:00 15:00 - 17:30 17:30 - 19:00 19:00 - 20:00 20:00 - 00:00 2/19/2008 00:00 - 04:00 04:00 - 05:00 05:00 - 06:00 06:00 - 06:30 06:30 - 07:30 07:30 - 08:30 08:30 - 10:00 10:00 - 14:00 Page 21 of 23 ~~~~ Spud Date: 1 /19/2008 End: 2/21 /2008 Description of Operations 9.00 CASE P RUNPRD Sliding Sleeve Assembly #5 7,755' 4.5" 12.6# L-80 IBT-M Pup Joint w/Centralizer 7,745' 1 Jt 4.5" 12.6# L-80 IBT-M Liner (#126) 7,704 W~t~ ~} 4.5" 12.6# L-80 IBT-M Pup Joint w/Centralizer 7,694' Sliding Sleeve Assembly #6 7,690' ~ ~ 4.5" 12.6# L-80 IBT-M Pup Joint w/Centralizer 7,680' 1 Jts 4.5" 12.6# L-80 IBT-M Liner (#127) 7,639' 4.5" 12.6# L-80 IBT-M Pup Jt 7,635' 5" BTC x 4.5" IBT pin XO bushing 7,634' Baker 5" x 7" Flex-Lok Liner Hanger 7,624' ~; ZXP finer top packer with 11.77 ft.w/5.25" ID 7,603.55' --- CENTRALIZER PLACEMENT (5 3/4" straight blade) Locked down 10' from Shoe Jnt #1 1 locked down on pups each side of sliding sleeves 1-RA Cent Locked down against upper collar of jnts #29, #54, #94 16 Total Centralizers / 4 Stop Rings 0.50 CASE P RUNPRD Continue laying down drill pipe from 7,481' to 7,710', (inner string depths) placing stinger above whipstock. 'Lost 37 bbls of mud riot to dis lacement 5.50 CASE P RUNPRD Displace well from 9.5 ppg FlowPro mud to 9.5 ppg brine with stinger above whipstock. Pump 100 bbls of 10.0 ppg brine with Safe Surf O, followed by 50 bbls of 10.0 ppg Hi Vis brine, and followed by 250 bbls of 9.5 ppg clean brine. 105 gpm, 640 psi ICP, 100 gpm, 465 psi. Observe well - OK. MW - 9.5 ppg in and out. 2.50 CASE P RUNPRD Continue laying down drill pipe from 7,710' to 5,910' ~ liner running tool. (Inner string depths) 1.50 CASE P RUNPRD Make surface breaks and laydown liner running tool. (Dogs sub sheared) 1.00 CASE P RUNPRD Rig up to pull 2 7/8" Fox inner string 4.00 CASE P RUNPRD POH laying down inner string from 5,862' to 2,905'. 'Lost 22 bbls of 9.5 brine from displacement to midnight 4.00 CASE P RUNPRD Continue laying down 2 7/8" Fox inner string from 2,905' to surface. ""'See Remarks section for BOPE test due 2/19/2008 1.00 CASE P RUNPRD Rig down inner string equipment. Clear rig floor. 1.00 CASE P RUNPRD Run in hole with excess drill pipe out of derrick to 1,134'. 0.50 CASE P RUNPRD Rig up to reverse circulate drill pipe. Reverse circulate to flush out drill pipe @ 5 bpm, 400 psi. Rig down reversing lines. Slowdown topdrive. 1.00 CASE P RUNPRD Slip and cut drilling line 78'. Inspect drawworks. 1.00 CASE P RUNPRD Service topdrive, drawwork, blocks, and crown. 1.50 CASE P RUNPRD Laydown drill pipe from 1,134'to surface. 4.00 BUNCO RUNCMP Rig up for completion run. Pull wear bushing. Make dummy hanger run. Change bales and rig up tubing torque turn equipment. 'Lost 12 bbls of 9.5 ppg from midnight to noon. 14:00 - 00:00 10.00 BUNCO RUNCMP PJSM. ,Run in hole with 4.5" completion jewelry with single packer and 4.5" 12.6# 13 CR80 Vam Top tubing from surface to 5,174'. Torque turn connections to 4,400 ft/Ibs with Jet Lube Seal Guard. Printed: 3/12/2008 11:45:09 AM ~ ~ BP EXPLORATION Page 22 of 23 Operations Summary Report Legal Well Name: Z-112 Common Well Name: Z-112 Spud Date: 1/19/2008 Event Name: DRILL+COMPLETE Start: 1/16/2008 End: 2/21/2008 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 2/21/2008 Rig Name: NABOBS 9ES Rig Number: Date From - To Hours ~ Task Code NPT Phase Description of Operations 2/19/2008 14:00 - 00:00 10.00 BUNCO RUNCMP 'Lost 7 bbls of 9.5 brine from noon to midni ht. 2/20/2008 00:00 - 03:00 3.00 BUNCO RUNCMP Continue running in hole with 4.5" single packer completion from 5,174' to bottom of liner tieback sleeve ~ 7,612'. 'Tagged no go 3' high, making the 4.5" liner top at 7600.55'. 03:00 - 05:00 2.00 BUNCO RUNCMP S ace out tubin for WLEG lacement (~ 7 605.25'. Placed 2 space out pups under last joint #172. Make up tubing hanger and land tubing @ 7,605.25'. Run in lock down screws. WLEG 4.7 ft inside of liner top. PU -85 k, SO - 60k (without 35k blocks) 05:00 - 05:30 0.50 BUNCO RUNCMP Rig up to reverse circulate. 05:30 - 07:00 1.50 BUNCO RUNCMP Reverse circulate clean 9.5 ppg brine C«? 3 bpm, 250 psi. Will be pumping 115 bbls of clean 9.5 ppg brine, followed by 60 bbls of inhibited 9.5 ppg brine, followed by 85 bbls of clean 9.5 ppg brine. 07:00 - 08:00 1.00 BUNCO RUNCMP Pick up landing joint, drop 1 7/8" ball & rod. Wait to seat. Attempt to pressure, ball not on seat yet. Wait 20 more minutes and make another attempt to pressure up without success. 08:00 - 10:00 2.00 BUNCO DPRB RUNCMP Pick up landing joint, back out lock down screws from hanger. Pick up on tubing and shake it a few times. Re-land tubing and run in lock down screws. Make several attempts to pressure up without success. 10:00 - 12:30 2.50 BUNCO WAIT RUNCMP Wait on slickline unit. 'Lost 11 bbls of 9.5 ppg brine from midnight to noon. 12:30 - 14:00 1.50 BUNCO DPRB RUNCMP Rig up slickline. 14:00 - 17:30 3.50 BUNCO DPRB RUNCMP Run in hole with JVC pulling tool on slickline and retrieve ball and rod out of GLM #2 C~ 5 905'. POH and inspect ball & rod - OK. Run back in hole with ball & rod on lightly baited setting tool. Had to push to bottom. Did not see anything at GLM #2. Seat on de th ~ 7 593'. POH and rig down slickline. 17:30 - 20:00 2.50 BUNCO RUNCMP Pressure up on tubing to 3,500 psi and set packer. Hold ressure for 30 minutes - oo test. Bleed tubing pressure down to psi and pressure up on annulus to 3,500 psi. Hold for 30 minutes -Good test! Bleed off annulus pressure to 0 psi, then bleed tubing pressure to 0 psi. Pressure u and shear out DCK valve ~ 2,375 psi. Pump 2 bbls each way - OK. 20:00 - 20:30 0.50 W HSUR P RUNCMP Dry rod 2-way check valve in tubing hanger. Test from below to 1 000 si - OK. 20:30 - 00:00 3.50 BOPSU P RUNCMP Nipple down BOPE. 'Lost 9 bbls of 9.5 ppg bring from noon to midnight. 2/21/2008 00:00 - 00:30 0.50 BOPSU P RUNCMP Set BOP stack on stump in cellar. 00:30 - 03:30 3.00 WHSUR P RUNCMP Install pack-off. Nipple up tree adaptor flange. Test to 5,000 psi - 30 minutes -good test. 03:30 - 04:30 1.00 WHSUR P RUNCMP Nipple up 2 valve dry hole tree. 04:30 - 05:00 0.50 WHSUR P RUNCMP Test tree with diesel to 5,000 psi - 15 minutes -Good test. 05:00 - 06:00 1.00 WHSUR P RUNCMP Rig up DSM lubricator to pull 2-way check valve. Test lubricator to 1,000 psi - OK. Pull 2-way check valve. Rig down lubricator. 06:00 - 07:00 1.00 BUNCO RUNCMP Rig up LRHOS. PJSM. Pressure test lines to 3,500 psi - OK. 07:00- 09:30 2.50 BUNCO RUNCMP Freeze protect tubing and IA to 2,300' TVD. Reverse in 82 bbls Printed: 3/12/2008 11:45:09 AM s r BP EXPLORATION Page 23 of 23 Operations Summary Report Legal Well Name: Z-112 Common Well Name: Z-112 Spud Date: 1/19/2008 Event Name: DRILL+COMPLETE Start: 1/16/2008 End: 2/21/2008 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 2/21/2008 Rig Name: NABOBS 9ES Rig Number: i i Date From - To Hours ~ Task Code' NPT `Phase Description of Operations 2/21/2008 07:00 - 09:30 2.50 BUNCO RUNCMP of 80' diesel at 2 bpm, 300 psi ICP, 1,500 psi FCP. U-tube diesel back to tubing. 09:30 - 10:00 0.50 BUNCO RUNCMP Rig down LRHOS. IA and tubing pressures = 0 psi. 10:00 - 14:00 4.00 WHSUR N WAIT RUNCMP Wait on Drill Site Maintenance. (Crews do not overlap on change out day. All crews leave slope on early flight at 9:25 am and northbound crew arrive at PASC at 8:40 am.) Crews knew that a job was waiting for them. *Moved satellite camp, shops and mud pits to V-Pad. 14:00 - 17:00 3.00 WHSUR P RUNCMP Ri u DSM lubricator and test to 1,000 psi - OK. Set BPV and test from below to 1,000 psi - OK. Rig down lubricator. 17:00 - 18:00 1.00 WHSUR P RUNCMP Secure tree. Remove annulus valves and install VR plugs in IA and OA. Secure cellar. *Release ria from Z-112 operations at 18:00 hr, 2/21/2008. Printed: 3/12/2008 11:45:09 AM Legal Name: Z-112 Common Name: Z-112 Test Date ~ Test Type 1/26/2008 LOT 1 /31 /2008 LOT 2/2/2008 FIT BP EXPLORATION Page 1 of 1 Leak-Off Test Summary __ - ---- Test Depth (TMD) Test Depth (TVD) AMW i Surface Pressure Leak Off Pressure (BHP) EMW 3,230.0 (ft) 3,039.0 (ft) 8.80 (ppg) 1,065 (psi) 2,454 (psi) 15.55 (ppg) 3,230.0 (ft) 3,039.0 (ft) 10.70 (ppg) 870 (psi) 2,559 (psi) 16.21 (ppg) 7,745.0 (ft) 6,696.0 (ft) 9.50 (ppg) 700 (psi) 4,005 (psi) 11.51 (ppg) Printed: 3/12/2008 11:45:04 AM II ~~ .~~_- Z-112 Su Report Date: February 14, 2008 Client: BP Exploration Alaska Field: Prudhoe Bay Unit - WOA Structure /Slot: Z-PAD / Z-112 Well: Z-112 Borehole: Z-112 UWVAPI#: 500292338000 Survey Name /Date: Z-112 /February 12, 2008 Tort /AHD / DDI / ERD ratio: 437.331 ° / 9121.30 ft / 6.906 / 1.355 Grid Coordinate System: NAD27 Alaska State Planes, Zone 04, US Feel Location LaULong: N 7017 51.734, W 1491151,945 Location Grid NtE Y/X: N 5959100.010 ftUS, E 599064.160 ftUS Grid Convergence Angle: +0.75527773° ~clu ger port Survey/DLSComputation Method: Minimum Curvature/Lubinski Vertical Section Azimuth: 350.000° Vertical Section Origin: N 0.000 ft, E 0.000 it TVD Reference Datum: Rotary Table TVD Reference Elevation: 82.60 ft relative to MSL Sea Bed /Ground Level Elevation: 54.10 ft relative to MSL Magnetic Declination: 23.128° Total Field Strength: 57644.630 nT Magnetic Dip: 80.860° Declination Date: February 12, 2008 Magnetic Declination Model: BGGM 2007 North Reference: True North Total Corr Mag North -> True North: +23.128° Local Coordinates Referenced To: Well Head Comments Measured Inclination Azimuth SulrSea 7VD TVD Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft ft ft ft ft ft de 00 ft ftUS ftUS nit v.vv u.uu u.uv -tsz.bu v,uu u. uu U.VV u.VV U.UU U.UO U.UU 5959100.01 599064.16 N 70 17 51.734 W 149 11 51.945 GYD CT DMS 100.00 0.05 100.17 17.40 100. 00 -0. 02 0.04 0.04 -0.01 0.04 0.05 5959100.00 599064.20 N 70 17 51.734 W 149 11 51. 944 200.00 0.22 66.19 117.40 200. 00 0. 02 0.27 0.27 0.06 0.26 0.18 5959100.08 599064.42 N 70 17 51.735 W 149 11 51. 938 300.00 0.22 96.97 217.40 300. 00 0. 01 0.65 0.64 0.12 0.63 0.12 5959100.13 599064.79 N 70 17 51.735 W 149 11 51. 927 400.00 0.19 142.06 317.40 400. 00 -0. 20 0.99 0.92 -0.04 0.92 0.16 5959099.98 599065.08 N 70 17 51.734 W 149 11 51. 918 500.00 1.19 180.78 417.39 499. 99 -1. 36 2.17 1.57 -1.21 1.01 1.05 5959098.82 599065.18 N 70 17 51.722 W 149 11 51. 916 600.00 2.56 180.37 517.33 599. 93 -4. 58 5.44 4.58 -4.48 0.98 1.37 5959095.55 599065.20 N 70 17 51.690 W 149 11 51. 917 700.00 4.52 182.05 617.14 699. 74 -10. 63 11.61 10.68 -10.65 0.82 1.96 5959089.37 599065.12 N 70 17 51.630 W 149 11 51. 921 800.00 6.38 178.83 716.68 799. 28 -19. 98 21.11 20.16 -20.14 0.80 1.88 5959079.88 599065.22 N 70 17 51.536 W 149 11 51. 922 900.00 7.86 179.80 815.91 898. 51 -32. 20 33.50 32.55 -32.54 0.93 1.48 5959067.49 599065.52 N 70 17 51.414 W 149 11 51. 918 1000.00 12.11 177.01 914.37 996. 97 -49. 36 50.84 49.88 -49.86 1.51 4.28 5959050.18 599066.32 N 70 17 51.244 W 149 11 51 MWD+IFR+MS 1039.29 13.99 175.98 952.65 1035. 25 -58. 18 59.71 58.75 -58.71 2.05 4.82 5959041.34 599066.99 N 70 17 51.157 W 149 11 5i 1132.62 16.86 172.90 1042.61 1125. 21 -82. 92 84.52 83.52 -83.40 4.52 3.20 5959016.68 599069.78 N 70 17 50.914 W 149 11 51. 1227.25 18.18 172.23 1132.84 1215. 44 -111. 38 113.01 111.95 -111.65 8.21 1.41 5958988.49 599073.84 N 70 17 50.636 W 149 11 51. 706 1322.51 19.42 170.56 1223.02 1305. 62 -142. 06 143.71 142.57 -142.00 12.82 1.42 5958958.21 599078.85 N 70 17 50.338 W 149 11 51. 572 1413.28 20.97 168.86 1308.21 1390. 81 -173 .39 175.04 173.80 -172.82 18.43 1.83 5958927.46 599084.86 N 70 17 50.035 W 149 11 51. 408 1511.24 22.56 169.42 1399.18 1481. 78 -209 .71 211.36 210.02 -208.49 25.27 1.64 5958891.89 599092.17 N 7017 49.684 W 149 11 51. 209 1607.00 23.37 168.91 1487.35 1569. 95 -247. 07 248.72 247.31 -245.19 32.29 0.87 5958855.29 599099.68 N 70 17 49.323 W 149 11 51. 004 1702.93 24.25 168.56 1575.12 1657. 72 -285 .79 287.45 285.96 -283.17 39.86 0.93 5958817.42 599107.75 N 70 17 48.949 W 149 11 50. 783 1798.88 24.79 166.29 1662.42 1745. 02 -325 .56 327.26 325.66 -322.02 48.54 1.13 5958778.68 599116.93 N 70 17 48.567 W 149 11 50. 530 1894.94 25.17 166.49 1749.49 1832. 09 -366 .05 367.83 366.09 -361.45 58.08 0.41 5958739.39 599127.00 N 70 17 48.179 W 149 11 50. 252 1990.56 25.15 166.82 1836.04 1918. 64 -406 .63 408.48 406.64 -401.01 67.47 0.15 5958699.96 599136.90 N 70 17 47.790 W 149 11 49. 979 2086.73 24.83 166.48 1923.20 2005. 80 -447 .19 449.11 447.19 -440.54 76.85 0.36 5958660.56 599146.80 N 70 17 47.402 W 149 11 49. 705 SurveyEditor Ver SP 2.1 Bld( doc40x_100) Z-112~Z-112~Z-112~Z-112 Generated 3/1 3/2008 1 1:57 AM Page 1 of 8 Measured Vertical Along Hole Comments Inclination Azimuth Sub-Sea TVD TVD Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft ft it ft ft ft de OOft ftUS ftUS Z1251.b3 Z4.bJ 16b.1"L zuua.4V Zu`JZ.VU -425b. 251 42525.231 4256.151 -4/y.l l tl6.zb U.Yti bybB6LL. 1L byylb6.71 N 7U 17 4/.ULL W 149 11 49.431 2277.30 26.57 165. 40 2095.68 2178.28 -528. 03 530.15 528.05 -519. 17 96.42 2.05 5958582. 20 599167.41 N 70 17 46.628 W 149 11 49.135 2372.50 26.26 165. 84 2180.94 2263.54 -570. 25 572.50 570.31 -560. 19 106.94 0.39 5958541. 32 599178.47 N 70 17 46.225 W 149 11 48.828 2468.35 25.86 165. 66 2267.04 2349.64 -612. 25 614.61 612.35 -601. 01 117.31 0.43 5958500. 66 599189.37 N 70 17 45.823 W 149 1 i 48.526 2563.25 25.66 165. 12 2352.51 2435.11 -653. 36 655.85 653.52 -640. 92 127.71 0.32 5958460. 89 599200.29 N 70 17 45.431 W 149 11 48.223 2658.78 25.47 167. 49 2438.69 2521.29 -694. 49 697.07 694.70 -680. 96 137.47 1.09 5958420. 98 599210.58 N 70 17 45.037 W 149 11 47.938 2754.10 24.98 167. 34 2524.92 2607.52 -735. 07 737.69 735.31 -720. 61 146.32 0.52 5958381. 46 599219.95 N 70 17 44.647 W 149 11 47.680 2849.16 24.68 167. 22 2611.19 2693.79 -774. 94 777.61 775.22 -759. 55 155.11 0.32 5958342. 64 599229.25 N 70 17 44.264 W 149 11 47.424 2945.21 25.67 167. 84 2698.12 2780.72 -815. 76 818.47 816.07 -799. 44 163.93 1.07 5958302. 87 599238.60 N 70 17 43.872 W 149 11 47.167 3040.16 25.24 167. 87 2783.85 2866.45 -856. 54 859.28 856.88 -839. 34 172.52 0.45 5958263. 10 599247.71 N 70 17 43.479 W 149 11 46.917 3136.92 24.61 167. 88 2871.60 2954.20 -897. 29 900.05 897.66 -879. 20 181.08 0.65 5958223. 35 599256.80 N 70 17 43.087 W 149 11 46.667 3180.65 24.79 167. 89 2911.33 2993.93 -915. 55 918.33 915.93 -897. 07 184.92 0.41 5958205. 54 599260.87 N 70 17 42.912 W 149 11 4r~ 3250.99 26.01 169. 26 2974.87 3057.47 -945. 71 948.50 946.10 -926. 64 190.88 1.93 5958176. 05 599267.22 N 70 17 42.621 W 149 11 46.382 3346.94 31.21 172. 05 3059.08 3141.68 -991. 63 994.42 991.98 -971. 97 198.25 5.59 5958130. 83 599275.18 N 70 17 42.175 W 149 11 46.167 3442.80 31.52 172. 29 3140.93 3223.53 -1041. 48 1044.31 1041.77 -1021. 40 205.04 0.35 5958081. 50 599282.63 N 70 17 41.689 W 149 11 45.969 3538.51 30.73 174. 03 3222.86 3305.46 -1090 .88 1093.78 1091.10 -1070. 51 210.94 1.25 5958032. 47 599289.18 N 70 17 41.206 W 149 11 45.797 3633.31 30.38 175. 22 3304.50 3387.10 -1138. 91 1141.98 1139.05 -1118. 49 215.46 0.74 5957984. 56 599294.33 N 70 17 40.734 W 149 11 45.665 3729.07 31.40 173. 80 3386.67 3469.27 -1187. 92 1191.14 1188.00 -1167. 42 220.17 1.31 5957935. 70 599299.68 N 70 17 40.253 W 149 11 45.528 3825.55 30.49 167. 34 3469.44 3552.04 -1237. 46 1240.71 1237.54 -1216. 30 228.25 3.57 5957886. 93 599308.41 N 70 17 39.772 W 149 11 45.293 3919.41 30.44 164. 30 3550.35 3632.95 -1284. 91 1288.29 1285.02 -1262. 43 239.91 1.64 5957840. 97 599320.66 N 70 17 39.318 W 149 11 44.953 4015.67 29.76 161. 48 3633.63 3716.23 -1332. 80 1336.56 1333.00 -1308. 56 254.10 1.63 5957795. 03 599335.46 N 70 17 38.865 W 149 11 44.540 4109.84 29.18 160. 66 3715.62 3798.22 -1378 .57 1382.88 1378.90 -1352. 38 269.12 0.75 5957751. 41 599351.06 N 70 17 38.434 W 149 11 44.102 4205.18 28.81 161. 19 3799.01 3881.61 -1424. 20 1429.10 1424.70 -1396. 06 284.23 0.47 5957707. 95 599366.74 N 7017 38.004 W 149 11 43.662 4298.72 28.91 163. 51 3880.93 3963,53 -1468. 94 1474.24 1469.59 -1439. 08 297.91 1.20 5957665. 12 599380.99 N 7017 37.581 W 149 11 43.263 4394.07 27.97 165. 36 3964.78 4047.38 -1514. 13 1519.65 1514.89 -1482. 81 310.11 1.35 5957621. 55 599393,75 N 70 17 37.151 W 149 11 42.907 4489.61 23.90 166. 96 4050.68 4133.28 -1555. 81 1561.42 1556.64 -1523. 36 320.14 4.32 5957581. 14 599404.32 N 70 17 36.752 W 149 11 42.615 4585.49 18.14 171. 11 4140.15 4222.75 -1590 .16 1595.79 1590.99 -1557. 06 326.83 6.20 5957547. 54 599411.46 N 70 17 36.421 W 149 11 42.420 4679.47 13.84 174. 88 4230.47 4313.07 -1616 .00 1621.66 1616.78 -1582. 72 330.10 4.70 5957521. 92 599415.06 N 7017 36.168 W 149 11 42.325 4775.66 10.38 168. 29 4324.51 4407.11 -1636. 13 1641.82 1636.88 -1602. 67 332.89 3.87 5957502. 01 599418.11 N 70 17 35.972 W 149 11 4 4870.45 8.67 141. 39 4418.04 4500.64 -1650. 95 1657.22 1651.80 -1616. 62 339.08 4.97 5957488. 14 599424.49 N 70 17 35.835 W 149 11 ~ 4 . 4965.43 8.63 109. 00 4511.99 4594.59 -1660. 69 1671.14 1661.88 -1624. 54 350.29 5.06 5957480. 37 599435.80 N 70 17 35.757 W 149 11 41.736 4988.42 8.81 100. 41 4534.72 4617.32 -1662 .14 1674.62 1663.45 -1625. 42 353.66 5.71 5957479. 54 599439.18 N 70 17 35.748 W 149 11 41.638 5060.69 10.40 77. 75 4606.00 4688.60 -1663 .82 1686.53 1665.63 -1625. 04 365.48 5.63 5957480. 08 599450.99 N 7017 35.752 W 149 11 41.294 5155.95 9.13 51. 38 4699.92 4782.52 -1659 .86 1702.41 1662.46 -1618. 49 379.79 4.83 5957486. 81 599465.22 N 70 17 35.816 W 149 11 40.877 5251.18 10.34 12. 69 4793.88 4876.48 -1648. 34 1717.93 1651.55 -i 605. 43 387.58 6.85 5957499. 98 599472.83 N 70 17 35.945 W 149 11 40.650 5345.98 14.05 349. 32 4886.58 4969.18 -1628 .97 1737.69 1632.41 -1585. 80 387.32 6.44 5957519. 60 599472.31 N 70 17 36.138 W 149 11 40.657 5443.25 17.35 343. 55 4980.21 5062.81 -1602 .74 1763.99 1606.13 -1560. 28 381.02 3.75 5957545. 03 599465,68 N 70 17 36.389 W 149 11 40.841 5539.23 16.45 346. 83 5072.05 5154.65 -1574 .95 1791.88 1578.24 -1533. 32 373.87 1.37 5957571. 89 599458.18 N 70 17 36.654 W 149 11 41.049 5632.67 17.94 350. 43 5161.31 5243.91 -1547 .35 1819.49 1550.66 -1506. 25 368.46 1.96 5957598. 89 599452.41 N 70 17 36.920 W 149 11 41.207 5724.35 22.17 353. 90 5247.41 5330.01 -1515 .95 1850.92 1519.42 -1475. 11 364.28 4.79 5957629. 97 599447.81 N 70 17 37.227 W 149 11 41.329 5818.24 24.50 352. 36 5333.62 5416.22 -1478 .82 1888.10 1482.52 -1438. 19 359.81 2.57 5957666. 82 599442.86 N 70 17 37.590 W 149 11 41.459 SurveyEditor Ver SP 2.1 Bld( doc40x_100) Z-112~Z-112~Z-112~Z-112 Generated 3/1 3/2008 1 1:57 AM Page 2 of 8 Comments Measured Inclination Azimuth Subsea ND ND Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure tt de de ft ft ft ft ft ft ft de OOft ttUS ftUS 5~ I L.08 Lb.34 35I . 33 5418.y 1 55V 1 A 1 - 1438.31 I `9L8.b4 144L.LV - 13`JB. U/ 354.V4 Z.UU 5y5/ / Vb.Bb 5yy4;ib.5/ N /V 1 / J/.y84 W 14y 11 41.6L/ 6005.96 28.21 350. 13 5501.82 5584.42 -1395.57 1971.38 1399.62 -1355. 89 347.14 2.09 5957748.94 599429.11 N 70 17 38.399 W 149 11 41.828 6101.82 31.01 350. 89 5585.15 5667.75 -1348.21 2018.74 1352.44 -1309. 17 339.35 2.95 5957795.54 599420.70 N 70 17 38.859 W 149 11 42.055 6194.56 33.56 351. 98 5663.55 5746.15 -1298.70 2068.27 1303.19 -1260. 19 331.99 2.82 5957844.42 599412.70 N 70 17 39.340 W 149 11 42.269 6289.62 36.32 352. 94 5741.47 5824.07 -1244.31 2122.71 1249.21 -1206. 23 324.86 2.96 5957898.28 599404.86 N 70 17 39.871 W 149 11 42.477 6386.12 39.83 355. 19 5817.42 5900.02 -1184.97 2182.20 1190.51 -1147. 05 318.76 3.91 5957957.37 599397.98 N 70 17 40.453 W 149 11 42.655 6479.47 42.92 354. 14 5887.47 5970.07 -1123.48 2243.90 1129.84 -1085. 62 313.00 3.39 5958018.70 599391.42 N 70 17 41.057 W 149 11 42.823 6575.41 46.29 354. 46 5955.76 6038.36 -1056.31 2311.26 1063.66 -1018. 60 306.32 3,52 5958085.63 599383.85 N 70 17 41.716 W 149 11 43.017 6670.43 49.54 355. 04 6019.44 6102.04 -986.05 2381.77 994.66 -948. 38 299.87 3.45 5958155.75 599376.48 N 7017 42.407 W 149 11 43.205 6767.07 52.02 354. 69 6080.54 6163.14 -911.45 2456.63 921.69 -873. 82 293.17 2.58 5958230.21 599368.80 N 7017 43.140 W 149 11 43.400 6862.46 54.27 354. 79 6137.75 6220.35 -835.39 2532.95 847.59 -797. 82 286.17 2.36 5958306.11 599360.80 N 70 17 43.888 W 149 11 43.604 6957.53 56.26 355. 05 6191.92 6274.52 -757.56 2611.08 772.26 -720. 00 279.26 2.11 5958383.82 599352.86 N 70 17 44.653 W 149 11 43~ 7053.61 57.62 354. 87 6244.33 6326.93 -677.33 2691.60 695.28 -639. 79 272.18 1.42 5958463.92 599344.73 N 70 17 45.442 W 149 11 44.012 7149.08 57.17 354. 60 6295.77 6378.37 -597.18 2772.03 619.19 -559. 70 264.80 0.53 5958543.90 599336.29 N 70 17 46.230 W 149 11 44.227 7244.45 57.52 355. 25 6347.23 6429.83 -517.19 2852.32 544.56 -479. 72 257.70 0.68 5958623.77 599328.14 N 70 17 47.016 W 149 11 44.434 7340.56 57.90 356. 03 6398.58 6481.18 -436.33 2933.57 471.42 -398. 71 251.53 0.79 5958704.68 599320.90 N 70 17 47.813 W 149 11 44.614 7435.46 58.12 355. 99 6448.85 6531.45 -356.29 3014.06 402.33 -318. 42 245.93 0.23 5958784.89 599314.24 N 7017 48.603 W 149 11 44.777 7531.48 57.69 355. 90 6499.87 6582.47 -275.38 3095.40 337.62 -237. 28 240.17 0.45 5958865.94 599307.42 N 7017 49.401 W 149 11 44.944 Tie-In Survey 7626.54 57.82 356. 94 6550.59 6633.19 -195.49 3175.80 282.77 -157. 04 235.15 0.94 5958946.10 599301.34 N 7017 50.190 W 149 11 45.091 TOW (Blind) 7713.00 57.59 358. 03 6596.78 6679.38 -123.03 3248.88 246.70 -84. 03 231.95 1.10 5959019.06 599297.17 N 70 17 50.908 W 149 11 45.184 BOW (Blind) 7726.00 59.48 357. 01 6603.57 6686.17 -112.03 3259.97 242.69 -72. 95 231.47 16.00 5959030.13 599296.55 N 70 17 51.017 W 149 11 45.198 Inc+Trend 7750.70 58.81 357. 99 6616.24 6698.84 -91.01 3281.18 236.28 -51. 76 230.54 4.35 5959051.29 599295.34 N 70 17 51.225 W 149 11 45.225 7779.91 66.45 359. 05 6629.66 6712.26 -65.38 3307.10 231.33 -25. 85 229.88 26.35 5959077.19 599294.34 N 70 17 51.480 W 149 11 45.244 7810.01 73.99 0. 07 6639.83 6722.43 -37.47 3335.40 229.68 2. 45 229.67 25.25 5959105.49 599293.75 N 70 17 51.758 W 149 11 45.250 7840.59 82.00 1. 04 6646.19 6728.79 -8.09 3365.29 232.22 32. 33 229.96 26.38 5959135.37 599293.65 N 70 17 52.052 W 149 11 45.242 7873.13 91.69 2. 06 6647.98 6730.58 23.71 3397.74 239.76 64. 77 230.84 29.94 5959167.82 599294.11 N 70 17 52.371 W 149 11 45.216 MWD+IFR+MS 7903.44 97.41 3. 01 6645.58 6728.18 53.19 3427.94 250.84 94. 95 232.18 19.13 5959198.00 599295.04 N 70 17 52.668 W 149 11 45.177 7934.64 94.42 0. 88 6642.36 6724.96 83.54 3458.97 265.07 125. 96 233.23 11.74 5959229.02 599295.69 N 70 17 52.973 W 149 1 t 45.147 7965.75 92.99 358. 15 6640.35 6722.95 114.16 3490.02 280.93 157. 00 232.96 9.89 5959260.05 599295.01 N 70 17 53.278 W 149 11 4 7995.00 97.15 356. 81 6637.77 6720.37 143.04 3519.14 297.17 186. 10 231.68 14.94 5959289.13 599293.35 N 70 17 53.564 W 149 11 ~ 4 . 8026.31 97.43 358. 58 6633.79 6716.39 173.81 3550.20 316.61 217. 13 230.43 5.68 5959320.14 599291.69 N 70 17 53.870 W 149 11 45.228 8056.92 95.72 357. 68 6630.29 6712.89 203.92 3580.61 337.50 247. 52 229.44 6.30 5959350.51 599290.30 N 70 17 54.169 W 149 11 45.257 8086.38 95.40 353. 44 6627.43 6710.03 233.09 3609.93 358.04 276. 75 227.17 14.37 5959379.70 599287.64 N 70 17 54.456 W 149 11 45.323 8107.65 92.84 346. 91 6625.90 6708.50 254.29 3631.14 372.24 297. 64 223.55 32.90 5959400.54 599283.75 N 7017 54.661 W 149 11 45.428 8139.48 93.01 346. 15 6624.28 6706.88 286.02 3662.93 393.27 328. 55 216.15 2.44 5959431.35 599275.94 N 7017 54.966 W 149 11 45.644 8169.00 92.80 346. 00 6622.78 6705.38 315.44 3692.41 413.85 357. 17 209.05 0.87 5959459.87 599268.47 N 70 17 55.247 W 149 11 45.851 8199.91 92.94 345. 37 6621.23 6703.83 346.22 3723.28 436.35 387. 08 201.42 2.09 5959489.67 599260.44 N 7017 55.541 W 149 11 46.073 8230.61 93.35 345. 72 6619.55 6702.15 376.78 3753.94 459.60 416. 76 193.77 1.75 5959519.25 599252.40 N 70 17 55.833 W 149 11 46.297 8260.88 93.36 345. 35 6617.78 6700.38 406.91 3784.16 483.34 446. 02 186.22 1.22 5959548.41 599244.47 N 7017 56.121 W 149 11 46.517 8291.28 92.06 345. 65 6616.34 6698.94 437.18 3814.52 507.87 475. 42 178.62 4.39 5959577.70 599236.48 N 70 17 56.410 W 149 11 46.738 8321.87 89.32 341. 94 6615.97 6698.57 467.58 3845.11 532.67 504. 78 170.08 15.08 5959606.95 599227.56 N 70 17 56.699 W 149 11 46.987 SurveyEditor Ver SP 2.1 Bld( doc40x_100) Z-112~Z-112~Z-112~Z-112 Generated 3/13/2008 11:57 AM Page 3 of 8 Comments Measured Inclination Azimuth Suh.Sea TVD TVD Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft ft ft ft ft ft de OOft ftUS ftUS 8352.38 89.40 341. 72 6616.31 6698. 91 497.78 3875.61 557.40 533. 77 160.57 0.77 5959635.80 599217.67 N 70 17 56.984 W 149 11 47.264 8382.69 89.54 341. 72 6616.59 6699. 19 527.77 3905.92 582.48 562. 55 151.06 0.46 5959664. 45 599207.78 N 70 17 57.267 W 149 11 47.541 8414.91 90.40 340. 98 6616.61 6699. 21 559.63 3938.14 609.55 593. 08 140.76 3.52 5959694. 84 599197.08 N 70 17 57.567 W 149 11 47.842 8445.44 90.73 341. 81 6616.31 6698. 91 589.81 3968.67 635.66 622. 01 131.02 2.93 5959723. 64 599186.96 N 70 17 57.852 W 149 11 48.126 8478.33 90.86 342. 81 6615.85 6698. 45 622.40 4001.56 664.46 653. 34 121.03 3,07 5959754. 83 599176.55 N 70 17 58.160 W 149 11 48.417 8510.21 90.95 342. 89 6615.35 6697. 95 654.03 4033.43 692.85 683. 80 111.63 0,38 5959785. 16 599166.75 N 70 17 58.459 W 149 11 48.691 8542.08 90.16 344. 01 6615.04 6697. 64 685.69 4065.30 721.67 714. 35 102.55 4.30 5959815. 58 599157.28 N 70 17 58.760 W 149 11 48.956 8574.32 88.82 344. 22 6615.33 6697. 93 717.76 4097.54 751.22 745. 36 93.73 4,21 5959846. 47 599148.04 N 70 17 59.065 W 149 11 49.213 8605.73 88.58 345. 75 6616.04 6698. 64 749.04 4128.94 780.39 775. 68 85.59 4,93 5959876. 68 599139.51 N 7017 59.363 W 149 11 49.450 8641.12 87.04 344. 73 6617.39 6699. 99 784.28 4164.31 813.49 809. 88 76.58 5.22 5959910. 76 599130.05 N 70 17 59.699 W 149 11 49.713 8670.00 87.80 345. 74 6618.69 6701. 29 813.03 4193.16 840.63 837. 78 69.23 4.37 5959938. 55 599122.33 N 70 17 59.974 W 149 11 4 8701.99 87.69 344. 25 6619.95 6702. 55 844.87 4225.12 870.79 868. 65 60.95 4.67 5959969. 31 599113.65 N 70 18 0.277 W 149 11 5 . 8733.84 88.24 344. 93 6621.08 6703. 68 876.56 4256.95 900.87 899. 34 52.50 2.74 5959999. 88 599104.79 N 70 18 0.579 W 149 11 50.415 8764.84 88.82 345. 34 6621.88 6704 .48 907.44 4287.94 930.36 929. 29 44.55 2.29 5960029. 72 599096.45 N 7018 0.874 W 149 11 50.646 8796.27 89.27 345. 03 6622.40 6705 .00 938.75 4319.37 960.36 959. 67 36.51 1.74 5960059. 99 599088.01 N 7018 1.173 W 149 11 50.881 8828.93 87.28 344. 08 6623.38 6705. 98 971.25 4352.01 991.52 991. 13 27.82 6.75 5960091. 33 599078.91 N 70 18 1.482 W 149 11 51.134 8862.08 87.08 342. 51 6625.02 6707. 62 1004.13 4385.12 1023.01 1022. 85 18.30 4.77 5960122. 92 599068.97 N 70 18 1.794 W 149 11 51.412 8892.42 88.69 341. 91 6626.14 6708. 74 1034.17 4415.44 1051.75 1051. 71 9.04 5.66 5960151. 66 599059.33 N 70 18 2.078 W 149 11 51.682 8923.33 90.50 341. 77 6626.35 6708. 95 1064.76 4446.35 1081.08 1081. 08 -0.60 5.87 5960180. 89 599049.31 N 70 18 2.367 W 149 11 51.963 8955.11 90.30 341. 74 6626.13 6708. 73 1096.21 4478.13 1111.31 1111. 26 -10.55 0.64 5960210. 94 599038.97 N 70 18 2.663 W 149 11 52.253 8986.88 90.16 342. 55 6626.00 6708 .60 1127.68 4509.90 1141.68 1141. 50 -20.29 2.59 5960241. 04 599028.83 N 70 18 2.961 W 149 11 52.537 9018.18 90.17 343. 23 6625.91 6708 .51 1158.74 4541.19 1171.79 1171. 42 -29.50 2.17 5960270. 83 599019.23 N 70 18 3.255 W 149 11 52.805 9051.07 86.47 339. 72 6626.88 6709 .48 1191.25 4574.07 1203.24 1202 .58 -39.94 15.50 5960301. 85 599008.38 N 70 18 3.562 W 149 11 53.109 9082.26 87.88 338. 83 6628.42 6711. 02 1221.85 4605.22 1232.77 1231. 72 -50.96 5.34 5960330. 83 598996.97 N 70 18 3.848 W 149 11 53.431 9114.01 88.53 337. 88 6629.41 6712. 01 1252.93 4636.95 1262.77 1261. 21 -62.67 3.62 5960360. 17 598984.88 N 70 18 4.138 W 149 11 53.772 9144.31 89.28 338. 57 6629.99 6712 .59 1282.59 4667.24 1291.46 1289. 34 -73.90 3.36 5960388. 15 598973.28 N 7018 4.415 W 149 11 54.100 9175.86 88.91 339. 05 6630.49 6713 .09 1313.54 4698.79 1321.51 1318. 76 -85.31 1.92 5960417. 41 598961.49 N 70 18 4.704 W 149 11 54.432 9207.75 88.70 339 .11 6631.15 6713 .75 1344.84 4730.67 1352.00 1348 .54 -96.69 0.68 5960447. 03 598949.71 N 70 18 4.997 W 149 11 54.764 9239.79 88.97 338 .79 6631.80 6714 .40 1376.28 4762.71 1382.67 1378 .43 -108.20 1.31 5960476. 77 598937.81 N 70 18 5.291 W 149 11 5 9271.96 89.76 338 .71 6632.16 6714 .76 1407.83 4794.88 1413.51 1408 .41 -119.86 2.47 5960506. 59 598925.76 N 70 18 5.586 W 149 11 5 9303.30 89.87 338. 39 6632.26 6714 .86 1438.55 4826.21 1443.57 1437 .58 -131.32 1.08 5960535. 61 598913.92 N 70 18 5.873 W 149 11 55.774 9336.63 89.83 338. 08 6632.35 6714 .95 1471.18 4859.54 1475.55 1468. 54 -143.67 0.94 5960566. 39 598901.16 N 70 18 6.177 W 149 11 56. i 34 9367.00 89.80 337 .87 6632.45 6715 .05 1500.88 4889.91 1504.70 1496. 69 -155.06 0.70 5960594. 39 598889.40 N 70 18 6.454 W 149 11 56.466 9397.55 90.69 338 .36 6632.32 6714 .92 1530.77 4920.46 1534.10 1525 .04 -166.45 3.33 5960622. 58 598877.64 N 70 18 6.733 W 149 11 56.798 9429.58 91.61 339 .54 6631.67 6714 .27 1562.20 4952.49 1565.07 1554 .92 -177.95 4.67 5960652. 31 598865.74 N 7018 7.027 W 149 11 57.133 9460.83 91.27 339 .88 6630.89 6713 .49 1592.94 4983.73 1595.44 1584 .23 -188.79 1.54 5960681 .47 598854.53 N 70 18 7.315 W 149 11 57.449 9492.49 89.49 338 .26 6630.68 6713 .28 1624.02 5015.39 1626.15 1613 .79 -200.09 7.60 5960710 .88 598842.83 N 70 18 7.606 W 149 11 57.779 9524.23 89.52 337 .08 6630.95 6713 .55 1655.03 5047.12 1656.79 1643 .15 -212.15 3.72 5960740. 07 598830.39 N 70 18 7.895 W 149 11 58.131 9556.18 89.87 336 .94 6631.12 6713 .72 1686.16 5079.07 1687.58 1672 .56 -224.63 1.18 5960769 .32 598817.52 N 70 18 8.184 W 149 11 58.495 9588.03 88.32 336 .89 6631.63 6714 .23 1717.18 5110.92 1718.30 1701 .86 -237.12 4.87 5960798 .44 598804.65 N 7018 8.472 W 149 11 58.859 SunreyEditor Ver SP 2.1 Bld( doc40x_100) Z-112~Z-112~Z-112~Z-112 Generated 3/1 3/2008 1 1:57 AM Page 4 of 8 Comments Measured Inclination Azimuth Sub-Sea TVD TVD Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft ft ft ft ft ft de 00 tt ftUS ftUS ~tlLU. 38 8/.IZ 33/.IO bb3Z.yl tl/IA bI (/48.08 D143.Z4 1/4`JA3 l/3l. bZ -Z4`J./3 3.8V byGUBLB.UJ 9651. 39 87.29 336.15 6634.42 6717 .02 1778.81 5174.22 1779.45 1760. 06 -262.01 3.30 5960856.30 9683 .11 89.18 336.99 6635.40 6718 .00 1809.65 5205.92 1810.10 1789 .15 -274.61 6.52 5960885.22 9715. 40 90.93 339.04 6635.37 6717 .97 1841.23 5238.21 1841.54 1819 .09 -286.70 8.35 5960914.99 9746. 67 90.79 341.33 6634.90 6717. 50 1872.04 5269.47 1872.25 1848. 50 -297.30 7.34 5960944.26 9777. 98 89.04 341.59 6634.95 6717. 55 1903.00 5300.78 1903.15 1878. 18 -307.25 5.65 5960973.81 9809. 94 87.84 340.94 6635.82 6718. 42 1934.58 5332.73 1934.67 1908. 44 -317.52 4.27 5961003.92 9841. 62 87.36 342.10 6637.14 6719. 74 1965.88 5364.38 1965.93 1938. 46 -327.55 3.96 5961033.80 9873. 49 87.43 341.34 6638.59 6721. 19 1997.39 5396.22 1997.41 1968. 69 -337.53 2.39 5961063.90 9906. 00 86.74 341.74 6640.25 6722. 85 2029.50 5428.69 2029.51 1999. 48 -347.82 2.45 5961094.55 9937. 81 86.98 340.94 6641.99 6724. 59 2060.90 5460.45 2060.90 2029. 58 -357.98 2.62 5961124.51 9969. 35 88.67 340.42 6643.19 6725. 79 2092.00 5491.97 2092.01 2059. 32 -368.40 5.61 5961154.10 10001. 69 89.25 343.34 6643.77 6726. 37 2124.01 5524.30 2124.03 2090. 04 -378.46 9.20 5961184.70 10033. 22 88.90 341.60 6644.28 6726. 88 2155.26 5555.83 2155.31 2120. 10 -387.96 5.63 5961214.62 10064 .76 90.35 342.25 6644.49 6727. 09 2186.49 5587.36 2186.57 2150. 09 -397.74 5.04 5961244.47 10097 .23 90.35 342.73 6644.29 6726 .89 2218.68 5619.83 2218.80 2181. 05 -407.51 1.48 5961275.30 10129. 40 90.28 342.03 6644.11 6726. 71 2250.57 5652.00 2250.73 2211. 71 -417.25 2.19 5961305.83 10160. 60 90.24 342.57 6643.97 6726. 57 2281.48 5683.20 2281.69 2241. 43 -426.73 1.74 5961335.42 10193. 65 90.31 342.70 6643.81 6726. 41 2314.26 5716.25 2314.53 2272. 98 -436.60 0.45 5961366.83 10224. 67 90.31 342.80 6643.64 6726. 24 2345.03 5747:27 2345.36 2302. 60 -445.80 0.32 5961396.33 10257 .27 90.45 343.23 6643.43 6726 .03 2377.39 5779.87 2377.78 2333. 78 -455.32 1.39 5961427.37 10289 .79 90.72 343.05 6643.10 6725 .70 2409.67 5812.39 2410.13 2364. 90 -464.75 1.00 5961458.36 10319. 95 90.96 343.79 6642.65 6725. 25 2439.63 5842.55 2440.16 2393. 80 -473.35 2.58 5961487.15 10352. 35 91.41 344.59 6641.98 6724. 58 2471.86 5874.94 2472.44 2424. 97 -482.18 2.83 5961518.19 10384. 16 91.44 344.45 6641.19 6723. 79 2503.51 5906.74 2504.16 2455. 62 -490.67 0.45 5961548.72 10415 .69 91.31 344.47 6640.44 6723 .04 2534.89 5938.26 2535.59 2485. 99 -499.11 0.42 5961578.98 10446 .21 91.27 345.11 6639.75 6722 .35 2565.27 5968.77 2566.04 2515 .43 -507.12 2.10 5961608.31 10477 .42 89.21 343.87 6639.62 6722 .22 2596.34 5999.98 2597.17 2545 .50 -515.46 7.70 5961638.26 10509. 85 90.04 342.43 6639.83 6722 .43 2628.53 6032.41 2629.45 2576 .53 -524.86 5.13 5961669.17 10539. 57 91.31 342.63 6639.48 6722 .08 2658.00 6062.13 2659.01 2604. 88 -533.78 4.33 5961697.39 10569 .91 91.48 343.64 6638.74 6721 .34 2688.11 6092.46 2689.21 2633. 91 -542.58 3.37 5961726.30 10601 .00 90.48 344.61 6638.21 6720 .81 2719.03 6123.54 2720.21 2663 .81 -551.09 4.48 5961756.08 10632 .77 89.39 343.44 6638.25 6720 .85 2750.63 6155.31 2751.89 2694 .35 -559.83 5.03 5961786.50 10663 .41 90.35 343.23 6638.32 6720 .92 2781.06 6185.95 2782.42 2723 .70 -568.62 3.21 5961815.73 10696 .05 90.96 343.76 6637.94 6720 .54 2813.49 6218.59 2814.95 2754 .99 -577.89 2.48 5961846.90 10727 .97 88.22 343.73 6638.17 6720 .77 2845.22 6250.51 2846.77 2785 .63 -586.82 8.58 5961877.41 10757 .27 89.15 342.86 6638.84 6721 .44 2874.31 6279.80 2875.96 2813 .69 -595.24 4.35 5961905.35 10788 .67 90.96 343.83 6638.81 6721 .41 2905.49 6311.20 2907.26 2843 .77 -604.24 6.54 5961935.31 10820 .63 91.10 345.09 6638.24 6720 .84 2937.30 6343.15 2939.15 2874 .56 -612.80 3.97 5961965.98 10850 .53 91.20 344.26 6637.64 6720 .24 2967.06 6373.05 2969.00 2903 .39 -620.70 2.80 5961994.70 10883.23 90.65 344.91 6637.11 6719.71 2999.61 6405.74 3001.64 2934.91 -629.39 2.60 5962026.10 by8/yl.tib N /U 1825. /ti5 W 145 l l by.1Ll) 598779.00 N 70 18 9.044 W 149 11 59.584 598766.01 N 70 18 9.330 W 149 11 59.952 598753.53 N 70 18 9.625 W 149 12 0.304 598742.55 N 70 18 9.914 W 149 12 0.613 598732.20 N 70 18 10.206 W 149 12 0.904 598721.55 N 70 18 10.504 W 149 12 1.203 598711.12 N 70 18 10.799 W 149 12 1.496 598700.74 N 70 18 11.096 W 149 12 1.787 598690.05 N 7018 11.399 W 149 12 2.087 598679.50 N 7018 11.695 W 149 12 2.383 598668.68 N 70 18 11.987 W 149 12 598658.22 N 70 18 12.290 W 149 12 2. 598648.33 N 70 18 12.585 W 149 12 3.257 598638.15 N 70 18 12.880 W 149 12 3.542 598627.98 N 7018 13.185 W 149 12 3.827 598617.84 N 70 18 13.486 W 149 12 4.111 598607.96 N 70 18 13.778 W 149 12 4.388 598597.68 N 70 18 14.089 W 149 12 4.676 598588.09 N 70 18 14.380 W 149 12 4.944 598578.16 N 70 18 14.687 W 149 12 5.222 598568.32 N 70 18 14.993 W 149 12 5.497 598559.34 N 7018 15.277 W 149 12 5.748 598550.10 N 70 18 15.584 W 149 12 6.005 598541.21 N 70 18 15.885 W 149 12 6.253 598532.37 N 70 18 16.184 W 149 12 6.499 598523.98 N 7018 16.473 W 149 12 6.732 598515.24 N 70 18 16.769 W 149 12 6.976 598505.43 N 70 18 17.074 W 149 12 7.250 598496.14 N 70 18 17.353 W 14912 7~ 598486.96 N 70 18 17.638 W 149 12 7.767 598478.06 N 70 18 17.932 W 149 12 8.015 598468.92 N 70 18 18.233 W 149 12 8.270 598459.74 N 70 18 18.521 W 149 12 8.526 598450.06 N 70 18 18.829 W 149 12 8.797 598440.73 N 7018 19.131 W 149 12 9.057 598431.94 N 70 18 19.406 W 149 12 9.303 598422.54 N 70 18 19.702 W 149 12 9.565 598413.58 N 70 18 20.005 W 149 12 9.815 598405.30 N 70 18 20.289 W 149 12 10.045 598396.19 N 7018 20.599 W 149 12 10.299 SurveyEditor Ver SP 2.1 Bld( doc40x_100) Z-112~Z-112~Z-112~Z-112 Generated 3/1 3/2008 1 1:57 AM Page 5 of 8 Comments Measured Inclination Azimuth Sub-Sea TVD TVD Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft ft ft ft ft ft de OOft ftUS }tUS I VO7/.VO OO.VO J44 .GV OOJ/.GO O/ 17.00 3V 13.3/ 0417.Jb 3U10.43 Z74t5.Z3 -b33.V/ 7`J.Z21 by6ZU3y. :i/ byt33`J"L.~4 N /U li5 'LU./3U W 14y 12 lU.4U6 10915 .34 85.65 347 .98 6638.27 6720.87 3031.58 6437.82 3033.68 2965.95 -637.46 24.54 5962057. 03 598387.72 N 70 18 20.904 W 149 12 10.534 10947 .70 83.68 346 .81 6641.27 6723.87 3063.77 6470.04 3065.90 2997.39 -644.49 7.07 5962088. 37 598380.27 N 70 18 21.213 W 149 12 10.739 10979 .06 85.13 346 .56 6644.33 6726.93 3094.93 6501.25 3097.10 3027.76 -651.68 4.69 5962118. 64 598372.69 N 70 18 21.512 W 149 12 10.949 11010 .00 87.19 347. 59 6646.40 6729.00 3125.75 6532.12 3127.96 3057.85 -658.59 7.44 5962148. 63 598365.39 N 70 18 21.808 W 149 12 11.150 11040 .65 88.46 347 .24 6647.57 6730.17 3156.35 6562.75 3158.59 3087.74 -665.26 4.30 5962178. 43 598358.32 N 70 18 22.102 W 149 12 11.345 11072 .27 90.11 347. 07 6647.96 6730.56 3187.93 6594.36 3190.20 3118.56 -672.29 5.25 5962209. 16 598350.89 N 70 18 22.405 W 149 12 11.550 11104 .53 91.72 347 .13 6647.45 6730.05 3220.14 6626.62 3222.46 3150.00 -679.49 4.99 5962240. 50 598343.27 N 70 18 22.714 W 149 12 11.760 11135 .92 91.96 345 .04 6646.44 6729.04 3251.44 6657.99 3253.82 3180.46 -687.03 6.70 5962270. 85 598335.33 N 7018 23.014 W 149 12 11.980 11168 .00 92.06 343 .31 6645.31 6727.91 3283.33 6690.05 3285.81 3211.30 -695.78 5.40 5962301. 57 598326.18 N 7018 23.317 W 149 12 12.235 11199 .42 93.57 343. 52 6643.77 6726.37 3314.51 6721.43 3317.10 3241.38 -704.73 4.85 5962331. 52 598316.83 N 70 18 23.613 W 149 12 12.497 Tie-In Survey 11199 .42 93.57 343. 52 6643.77 6726.37 3314.51 6721.43 3317.10 3241.38 -704.73 2.09 5962331. 52 598316.83 N 70 18 23.613 W 149 12 1~ MWD+IFR+MS 11231 .02 95.36 342. 68 6641.31 6723.91 3345.78 6752.93 3348.50 3271.52 -713.89 6.25 5962361. 54 598307.28 N 70 18 23.909 W 149 12 12. _ 11263 .62 90.98 343. 46 6639.51 6722.11 3378.09 6785.48 3380.94 3302.65 -723.37 13.65 5962392. 54 598297.39 N 70 18 24.215 W 149 12 13.040 11294 .29 89.68 343 .75 6639.33 6721.93 3408.56 6816.15 3411.53 3332.07 -732.02 4.34 5962421. 84 598288.35 N 70 18 24.505 W 149 12 13.293 11326 .92 89.56 345 .47 6639.55 6722.15 3441.05 6848.77 3444.12 3363.53 -740.68 5.28 5962453. 18 598279.28 N 7018 24.814 W 149 12 13.545 11358 .84 89.32 348. 16 6639.86 6722.46 3472.91 6880.69 3476.03 3394.60 -747.96 8.46 5962484. 15 598271.59 N 70 18 25.120 W 149 12 13.758 11389 .31 90.01 352. 09 6640.04 6722.64 3503.38 6911.16 3506.46 3424.62 -753.19 13.09 5962514. 09 598265.97 N 7018 25.415 W 149 12 13.910 11422 .66 90.42 352. 90 6639.91 6722.51 3536.69 6944.51 3539.69 3457.68 -757.54 2.72 5962547. 09 598261.18 N 70 18 25.740 W 149 12 14.037 11454 .43 90.21 352. 27 6639.74 6722.34 3568.43 6976.28 3571.34 3489.18 -761,64 2.09 5962578. 53 598256.66 N 70 18 26.050 W 149 12 14.157 11485 .32 90.31 352. 36 6639.60 6722.20 3599.30 7007.17 3602.13 3519.80 -765.77 0.44 5962609. 09 598252.13 N 70 18 26.351 W 149 12 14.278 11517 .70 90.46 352. 63 6639.38 6721.98 3631.64 7039.55 3634.40 3551.90 -770.00 0.95 5962641. 13 598247.48 N 70 18 26.667 W 149 12 14.401 i 1549. 76 90.39 352. 73 6639.14 6721.74 3663.67 7071.61 3666.34 3583.69 -774,09 0.38 5962672. 86 598242.98 N 70 18 26.979 W 149 12 14.520 11580. 34 90.39 353. 44 6638.93 6721.53 3694.20 7102.19 3696.79 3614.05 -777,77 2.32 5962703. 17 598238.90 N 70 18 27.278 W 149 12 14.628 11612 .64 90.66 353. 70 6638.64 6721.24 3726.44 7134.49 3728.93 3646.15 -781.39 1.16 5962735. 21 598234.86 N 7018 27.593 W 149 12 14.733 11645 .87 90.16 353. 09 6638.40 6721.00 3759.61 7167.72 3762.01 3679.16 -785.21 2.37 5962768. 16 598230.60 N 70 18 27.918 W 149 12 14.845 11676 .09 90.06 352. 63 6638.34 6720.94 3789.79 7197.94 3792.12 3709.14 -788.96 1.56 5962798. 09 598226.45 N 70 18 28.213 W 149 12 14.954 11709 .23 90.32 353 .06 6638.23 6720.83 3822.89 7231.08 3825.14 3742.02 -793.09 1.52 5962830. 91 598221.89 N 70 18 28.536 W 149 12 15.075 11741. 45 90.00 353. 21 6638.14 6720.74 3855.06 7263.30 3857.24 3774.01 -796.94 1.10 5962862. 85 598217.62 N 70 18 28.851 W 149 12 15.187 11776. 21 89.87 352. 78 6638.18 6720.78 3889.78 7298.06 3891.87 3808.51 -801.18 1.29 5962897. 28 598212.92 N 7018 29.190 W 149 12 1 11804. 06 89.97 353. 99 6638.22 6720.82 3917.58 7325.91 3919.60 3836.18 -804.39 4.36 5962924. 90 598209.35 N 7018 29.462 W 149 12 15.405 11837 .18 89.65 353. 60 6638.33 6720.93 3950.62 7359.03 3952.56 3869.10 -807.97 1.52 5962957. 77 598205.34 N 70 18 29.786 W 149 12 15.509 11869 .29 89.77 353. 77 6638.49 6721.09 3982.67 7391.14 3984.53 3901.02 -811.50 0.65 5962989. 64 598201.39 N 70 18 30.100 W 149 12 15.612 11901 .28 90.73 354. 38 6638.35 6720.95 4014.57 7423.12 4016.35 3932.83 -814.80 3.56 5963021. 41 598197.66 N 70 18 30.413 W 149 12 15.709 11933. 32 90.77 354. 55 6637.93 6720.53 4046.51 7455.16 4048.21 3964.72 -817.89 0.55 5963053. 25 598194.15 N 70 18 30,727 W 149 12 15.799 11965 .00 90.97 354. 60 6637.45 6720.05 4078.09 7486.84 4079.70 3996.26 -820.89 0.65 5963084. 74 598190.74 N 70 18 31.037 W 149 12 15.886 11996 .51 90.80 354 .29 6636.97 6719.57 4109.50 7518.34 4111.03 4027.61 -823.94 1.12 5963116. 05 598187.28 N 70 18 31.345 W 149 12 15.975 12028 .22 89.87 354 .82 6636.78 6719.38 4141.11 7550.05 4142.56 4059.18 -826.95 3.38 5963147. 57 598183.86 N 70 18 31.656 W 149 12 16.063 12059 .92 87.50 353. 69 6637.51 6720.11 4172.71 7581.74 4174.09 4090.71 -830.12 8.28 5963179. 05 598180.27 N 70 18 31.966 W 149 12 16.156 12092 .45 88.05 354 .64 6638.77 6721.37 4205.13 7614.25 4206.44 4123.05 -833.42 3.37 5963211. 34 598176.54 N 7018 32.284 W 149 12 16.252 12124. 24 86.94 354. 82 6640.16 6722.76 4236.78 7646.01 4238.01 4154.67 -836.34 3.54 5963242. 92 598173.21 N 70 18 32.595 W 149 12 16.338 SurveyEditor Ver SP 2.1 Bld( doc40x_100) Z-112~Z-112~Z-112~Z-112 Generated 3/1 3/2008 1 1:57 AM Page 6 of 8 r Measured i i TVD Vertical Along Hole Comments Depth Incl nat on Azimuth Sub-Sea TVD Section Departure Closure NS EW DLS Northing Easting Latitude Longitude ft de de ft ft ft ft ft ft ft de OOft ftUS ftUS 1'1158. 33 811.95 354./8 8(141. 8/ li/"L4.4/ 42(18./1 12187. 44 86.83 353.99 6643. 56 6726.16 4299.69 12219. 91 87.88 354.10 6645. 06 6727.66 4332.04 12250. 95 89.73 354.79 6645. 70 6728.30 4362.98 12283. 69 89.81 354.91 6645. 84 6728.44 4395.60 12315. 58 89.73 354.46 6645. 96 6728.56 4427.39 12346. 66 89.47 354.31 6646. 18 6728.78 4458.37 12378. 18 90.66 353.86 6646. 14 6728.74 4489.81 12410. 58 90.53 353.66 6645. 81 6728.41 4522.14 12442. 15 90.39 354.38 6645. 55 6728.15 4553.63 12473. 99 90.22 354.08 6645. 39 6727.99 4585.39 12506. 70 89.98 352.26 6645. 33 6727.93 4618.04 12538. 50 89.91 352.99 6645. 36 6727.96 4649.81 12569. 38 89.87 353.76 6645. 42 6728.02 4680.64 12600. 98 89.54 353.27 6645. 58 6728.18 4712.18 12633. 64 89.76 354.27 6645. 78 6728.38 4744.77 12665. 32 90.04 355.26 6645. 84 6728.44 4776.34 12696. 98 89.93 351.95 6645. 84 6728.44 4807.93 12727. 08 91.24 350.36 6645. 54 6728.14 4838.02 12761. 10 91.86 349.02 6644. 62 6727.22 4872.03 12793. 22 91.35 348.36 6643. 72 6726.32 4904.12 12823. 58 91.66 349.63 6642. 92 6725.52 4934.47 12857. 13 91.21 349.28 6642. 08 6724.68 4968.01 12888. 52 91.38 349.39 6641. 37 6723.97 4999.39 12919. 91 91.44 349.80 6640. 60 6723.20 5030.77 13016. 14 91.66 350.04 6637. 99 6720.59 5126.96 13081. 11 91.65 349.93 6636. 12 6718.72 5191.90 13112. 42 92.03 349.32 6635. 11 6717.71 5223.20 13143. 43 90.58 349.68 6634. 41 6717.01 5254.20 13176. 32 92.07 350.98 6633. 65 6716.25 5287.07 13208. 08 92.10 346.35 6632. 49 6715.09 5318.80 13240. 27 91.24 351.24 6631. 55 6714.15 5350.96 13271. 36 88.08 348.51 6631. 74 6714.34 5382.04 13303. 67 91.65 349.03 6631. 81 6714.41 5414.34 13335. 48 92.86 350.29 6630. 56 6713.16 5446.12 13367. 05 92,54 349.04 6629. 07 6711.67 5477.65 13399. 48 92.31 349.30 6627 .70 6710.30 5510.05 13431. 54 90.81 349.89 6626 .83 6709.43 5542.10 13463. 67 90.97 349.30 6626 .33 6708.93 5574.22 13494. 74 88.98 349.06 6626. 34 6708.94 5605.29 13526. 22 90.93 349.92 6626. 37 6708.97 5636.76 /8/8.05 4289.8/ 4186.58 -839.15 7709.12 4300.79 4217.50 -842.30 7741.55 4333.08 4249.76 -845.66 7772.58 4363.96 4280.64 -848.66 7805.32 4396.52 4313.25 -851.60 7837.21 4428.24 4345.00 -854.56 7868.29 4459.18 4375.93 -857.60 7899.81 4490.57 4407.29 -860.85 7932.21 4522.86 4439.49 -864.37 7963.78 4554.30 4470.89 -867.66 7995.62 4586.01 4502.57 -870.86 8028.33 4618.64 4535.04 -874.75 8060.13 4650.38 4566.58 -878.83 8091.01 4681.17 4597.25 -882.39 8122.61 4712.68 4628.65 -885.96 8155.27 4745.23 4661.12 -889.50 8186.95 4776.76 4692.66 -892.40 8218.61 4808.33 4724.12 -895.92 8248.70 4838.41 4753.86 -900.55 8282.71 4872.41 4787.32 -906.64 8314.82 4904.52 4818.80 -912.93 8345.17 4934.87 4848.59 -918.73 8378.71 4968.41 4881.57 -924.86 8410.09 4999.79 4912.41 -930.67 8441.47 5031.17 4943.27 -936.34 8537.67 5127.36 5037.98 -953.17 8602.61 5192.30 5101.93 -964.47 8633.90 5223.59 5132.72 -970.10 8664.90 5254.59 5163.20 -975.75 8697.78 5287.46 5195.61 -981.28 8729.52 5319.19 5226.72 -987.51 8761.70 5351.36 5258.28 -993.76 8792.78 5382.44 5288.87 -999.23 8825.09 5414.74 5320.56 -1005.52 8856.87 5446.53 5351.83 -1011.22 8888.41 5478.06 5382.85 -1016.88 8920.81 5510.46 5414.67 -1022.97 8952.86 5542.51 5446.19 -1028.76 8984.98 5574.63 5477.79 -1034.56 9016.05 5605.70 5508.31 -1040.39 9047.53 5637.18 5539.26 -1046.13 0.19 5963274.79 598169.88 N 70 18 32.909 W 149 12 16.423 2.50 5963305.66 598166.43 N 70 18 33.213 W 149 12 16.511 3.25 5963337.87 598162.64 N 70 18 33.530 W 149 12 16.610 6.36 5963368.71 598159.23 N 70 18 33.834 W 149 12 16.697 0.44 5963401.27 598155.86 N 70 18 34.154 W 149 12 16.783 1.43 5963432.98 598152.49 N 70 18 34.467 W 149 12 16.870 0.97 5963463.86 598149.04 N 70 18 34.771 W 149 12 16.958 4.04 5963495.17 598145.38 N 70 18 35.079 W 149 12 17.053 0.74 5963527.32 598141.43 N 70 18 35.396 W 149 12 17.156 2.32 5963558.67 598137.73 N 70 18 35.705 W 149 12 17.252 1.08 5963590.30 598134.11 N 70 18 36.016 W 149 12 17.345 5.61 5963622.72 598129.79 N 70 18 36.336 W 149 12 17~ 2.31 5963654.20 598125.30 N 70 18 36.646 W 149 12 17. 2.50 5963684.82 598121.33 N 70 18 36.947 W 149 12 17.682 1.87 5963716.16 598117.35 N 70 18 37.256 W 149 12 17.786 3.14 5963748.57 598113.38 N 70 18 37.575 W 149 12 17.890 3.25 5963780.08 598110.07 N 70 18 37.886 W 149 12 17.974 10.46 5963811.49 598106.13 N 70 18 38.195 W 149 12 18.077 6.84 5963841.16 598101.11 N 70 18 38.488 W 149 12 18.212 4.34 5963874.53 598094.59 N 70 18 38.817 W 149 12 18.390 2.60 5963905.92 598087.88 N 70 18 39.126 W 149 12 18.574 4.30 5963935.63 598081.69 N 70 18 39.419 W 149 12 18.743 1.70 5963968.52 598075.12 N 70 18 39.744 W 149 12 18.922 0.65 5963999.28 598068.91 N 70 18 40.047 W 149 12 19.092 1.32 5964030.06 598062.83 N 70 18 40.350 W 149 12 19.257 0.34 5964124.53 598044.75 N 70 18 41.282 W 149 12 19.748 0.17 5964188.33 598032.62 N 70 18 41.911 W 149 12 20.078 2.29 5964219.03 598026.58 N 70 18 42.214 W 149 12 20.243 4.82 5964249.43 598020.53 N 70 18 42.513 W 149 12 2~ 6.01 5964281.76 598014.58 N 70 18 42.832 W 149 12 2 . 14.57 5964312.79 598007.93 N 70 18 43.138 W 149 12 20.751 15.42 5964344.25 598001.27 N 70 18 43.448 W 149 12 20.933 13.43 5964374.77 597995.40 N 70 18 43.749 W 149 12 21.093 11.17 5964406.37 597988.69 N 7018 44.061 W 149 12 21.276 5.49 5964437.56 597982.58 N 70 18 44.368 W 149 12 21.443 4.08 5964468.50 597976.51 N 70 18 44.674 W 14912 21.608 1.07 5964500.24 597970.00 N 7018 44.986 W 149 12 21.786 5.03 5964531.68 597963.80 N 70 18 45.296 W 149 12 21.955 1.90 5964563.19 597957.58 N 70 18 45.607 W 149 12 22.124 6.45 5964593.63 597951.35 N 70 18 45.907 W 149 12 22.294 6.77 5964624.50 597945.20 N 70 18 46.212 W 149 12 22.462 SurveyEditor Ver SP 2.1 Bld( doc40x_100 ) Z-112~Z-112~Z-112~Z-112 Generated 3/1 3/2008 1 1:57 AM Page 7 of 8 Comments Measured inclination Azimuth Sub-Sea TVD TVD Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft ft ft ft }t ft de 100ft ftUS ftUS La5[JUfVBy 13JOALb y1.38 3bU.bJ OOGb./b b/Vb.3t5 bbbb.BV `JV/bAb bbbb.Zl bbb/.23/ -IVbI.Vb Z.bl byb4bb3.U4 b`J/y3y.yU IV /Vli54b.4y3VV14`J~1'LLL.tiUd TD (Projected) 13600.00 91.38 350.53 6624.70 6707.30 5710.52 9121.29 5710.93 5611.99 -1058.42 0.00 5964697.05 597931.96 N 70 18 46.927 W 149 12 22.821 Survey Type: Definitive Survey NOTES: GYD CT DMS - (Gyrodata -cont. drillpipe m/s -- Gyrodata pump-down multishot surveys with continuous tool (RGS-CT) in drill-pipe.) INC+TREND - (Inclinometer + known azi trend -- Inclination only surveys in near-vertical hole-where formation dip and experience enables direction of drift to be predicted. Replaces ex-BP "Inclinometer (azimuth in known quadrant)" model. MWD + IFR + MS - (In-field referenced MWD with mutt-station analysis and correction applied in post-processing. Assumes a BHA sag correction is applied to enhance inclination accuracy. ) Legal Description: Northing (Y) [ftUS] Easting (X) [ftUS] Surface : 4305 FSL 3613 FEL S19 T11 N R12E UM 5959100.01 599064.16 BHL : 4637 FSL 4650 FEL S18 T11 N R12E UM 5964696.94 597931.34 r SurveyEditor Ver SP 2.1 Bld( doc40x_100) Z-112~Z-112~Z-112~Z-112 Generated 3/1 3/2008 1 1:57 AM Page 8 of 8 ~~ J J A~\ ~\ J A -~ cumber ~~ ~- i i cra i purve y rtepvri Report Date: January 29, 2008 Survey/DLS Computation Method: Minimum Curvature / Lubinski Client: BP Exploration Alaska Vertical Section Azimuth: 350.000° Field: Prudhoe Bay Unit - WOA Vertical Section Origin: N 0.000 ft, E 0.000 ft Structure /Slot: Z-PAD / Z-112 TVD Reference Datum: Rotary Table Well: Z-112 drilling TVD Reference Elevation: 82.60 it relative to MSL Borehole: Z-112PB1 Sea Bed /Ground Level Elevation: 54.10 tt relative to MSL UWUAPI#: 500292338070 Magnetic Declination: 23.159° Survey Name /Date: Z-112PB1 /January 28, 2008 Total Field Strength: 57643.350 nT Tort /AHD / DDI / ERD ratio: 161.711 ° / 3524.10 ft / 5.824 / 0.513 Magnetic Dip: 80.859° Grid Coordinate System: NAD27 Alaska State Planes, Zone 04, US Feei Declination Date: 18-Jan-08 Location LaULong: N 70 17 51.734, W 149 11 51.945 Magnetic Declination Model: BGGM 2007 Location Grid N/E Y/X: N 5959100.010 ftUS, E 599064.160 ftUS North Reference: True North Grid Convergence Angle: +0.75527773° Total Corr Mag North -> True North: +23.17° Grid Scale Factor: 0.99991115 Local Coordinates Referenced To: Well Head • Comments Measured Inclination Azimuth Sub-Sea TVD 7VD Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft ft ft ft ft ft de 100tt ftUS ftUS rs i t u.uu u.uu u.vu -az.nu u.uu v.uv u.vu u.w U.UU U.UU U.UU 59591 UU.U1 59yU64.1 li N /U 1 / 51. /34 W 149 1 1 51.945 GYD CT DMS 100.00 0.05 100.17 17.40 100.00 -0.02 0.04 0.04 -0.01 0.04 0.05 5959100.00 599064.20 N 70 17 51.734 W 149 11 51.944 200.00 0.22 66.19 117.40 200.00 0.02 0.27 0.27 0.06 0.26 0.18 5959100.08 599064.42 N 70 17 51.735 W 149 11 51.938 300.00 0.22 96.97 217.40 300.00 0.01 0.65 0.64 0.12 0.63 0.12 5959100.13 599064.79 N 70 17 51.735 W 149 11 51.927 400.00 0.19 142.06 317.40 400.00 -0.20 0.99 0.92 -0.04 0.92 0.16 5959099.98 599065.08 N 70 17 51.734 W 149 11 51.918 500.00 1.19 180.78 417.39 499.99 -1.36 2.17 1.57 -1.21 1.01 1.05 5959098.82 599065.18 N 70 17 51.722 W 149 11 51.916 600.00 2.56 180.37 517.33 599.93 -4.58 5.44 4.58 -4.48 0.98 1.37 5959095.55 599065.20 N 70 17 51.690 W 149 11 51.917 700.00 4.52 182.05 617.14 699.74 -10.63 11.61 10.68 -10.65 0.82 1.96 5959089.37 599065.12 N 70 17 51.630 W 149 11 51.921 800.00 6.38 178.83 716.68 799.28 -19.98 21.11 20.16 -20.14 0.80 1.88 5959079.88 599065.22 N 70 17 51.536 W 149 11 51.922 900.00 7.86 179.80 815.91 898.51 -32.20 33.50 32.55 -32.54 0.93 1.48 5959067.49 599065.52 N 70 17 51.414 W 149 11 51.918 1000.00 12.11 177.01 914.37 996.97 -49.36 50.84 49.88 -49.86 1.51 4.28 5959050.18 599066.32 N 70 17 51.244 W 149 11 51 MWD+IFRtMS 1039.29 13.99 175.98 952.65 1035.25 -58.18 59.71 58.75 -58.71 2.05 4.82 5959041.34 599066.99 N 7017 51.157 W 149 11 5 1132.62 16.86 172.90 1042.61 1125.21 -82.92 84.52 83.52 -83.40 4.52 3.20 5959016.68 599069.78 N 70 17 50.914 W 149 11 51. 1227.25 18.18 172.23 1132.84 1215.44 -111.38 113.01 111.95 -111.65 8.21 1.41 5958988.49 599073.84 N 70 17 50.636 W 149 11 51.706 1322.51 19.42 170.56 1223.02 1305.62 -142.06 143.71 142.57 -142.00 12.82 1.42 5958958.21 599078.85 N 70 17 50.338 W 149 11 51.572 1413.28 20.97 168.86 1308.21 1390.81 -173.39 175.04 173.80 -172.82 18.43 1.83 5958927,46 599084.86 N 70 17 50.035 W 149 11 51.408 1511.24 22.56 169.42 1399.18 1481.78 -209.71 211.36 210.02 -208.49 25.27 1.64 5958891.89 599092.17 N 70 17 49.684 W 149 11 51.209 1607.00 23.37 168.91 1487.35 1569.95 -247.07 248.72 247.31 -245.19 32.29 0.87 5958855.29 599099.68 N 70 17 49.323 W 149 11 51.004 1702.93 24.25 168.56 1575.12 1657.72 -285.79 287.45 285.96 -283.17 39.86 0.93 5958817.42 599107.75 N 70 17 48.949 W 149 11 50.783 1798.88 24.79 166.29 1662.42 1745.02 -325.56 327.26 325.66 -322.02 48.54 1.13 5958778.68 599116.93 N 70 17 48.567 W 149 11 50.530 1894.94 25.17 166.49 1749.49 1832.09 -366.05 367.83 366.09 -361.45 58.08 0.41 5958739.39 599127.00 N 7017 48.179 W 149 11 50.252 1990.56 25.15 166.82 1836.04 1918.64 -406.63 408.48 406.64 -401.01 67.47 0.15 5958699.96 599136.90 N 70 17 47.790 W 149 11 49.979 2086.73 24.83 166.48 1923.20 2005.80 -447.19 449.11 447.19 -440.54 76.85 0.36 5958660.56 599146.80 N 70 17 47.402 W 149 11 49.705 SurveyEditor Ver SP 2.1 Bld( doc40x_100) Z-112~Z-112 drilling~Z-112PB1~Z-112P61 Generated 3/13/2008 11:58 AM Page i of 3 Comments Measured Inclination Azimuth Sub-Sea TVD TVD Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft ft ft ft ft ft de 100 ft ftUS ftUS "1181.1i:i 24.118 l8ti.12 "LUU9.4U 2U9L.UU -488 .81 488.81 486.81 -4/9.11 86.LS 0.26 5958622.12 599156.71 N 70 17 47.022 W 149 11 49.431 2277.30 26.57 165. 40 2095.68 2178.28 -528 .03 530.15 528.05 -519. 17 96.42 2.05 5958582. 20 599167.41 N 70 17 46.628 W 149 11 49.135 2372.50 26.26 165. 84 2180.94 2263.54 -570 .25 572.50 570.31 -560. 19 106.94 0.39 5958541. 32 599178.47 N 70 17 46.225 W 149 11 48.828 2468.35 25.86 165. 66 2267.04 2349.64 -612. 25 614.61 612.35 -601. 01 117.31 0.43 5958500. 66 599189.37 N 7017 45.823 W 149 11 48.526 2563.25 25.66 165. 12 2352.51 2435.11 -653. 36 655.85 653.52 -640. 92 127.71 0.32 5958460. 89 599200:29 N 70 17 45.431 W 149 11 48.223 2658.78 25.47 167. 49 2438.69 2521.29 -694 .49 697.07 694.70 -680. 96 137.47 1.09 5958420. 98 599210.58 N 70 17 45.037 W 149 11 47.938 2754.10 24.98 167. 34 2524.92 2607.52 -735 .07 737.69 735.31 -720. 61 146.32 0.52 5958381. 46 599219.95 N 70 17 44.647 W 149 11 47.680 2849.16 24.68 167. 22 2611.19 2693.79 -774 .94 777.61 775.22 -759. 55 155.11 0.32 5958342. 64 599229.25 N 70 17 44.264 W 149 11 47.424 2945.21 25.67 167. 84 2698.12 2780.72 -815 .76 818.47 816.07 -799. 44 163.93 1.07 5958302. 87 599238.60 N 70 17 43.872 W 149 11 47.167 3040.16 25.24 167. 87 2783.85 2866.45 -856 .54 859.28 856.88 -839. 34 172.52 0.45 5958263. 10 599247.71 N 70 17 43.479 W 149 11 46.917 3136.92 24.61 167. 88 2871.60 2954.20 -897 .29 900.05 897.66 -879. 20 181.08 0.65 5958223. 35 599256.80 N 70 17 43.087 W 149 11 46.667 3180.65 24.79 167. 89 2911.33 2993.93 -915 .55 918.33 915.93 -897. 07 184.92 0.41 5958205. 54 599260.87 N 70 17 42.912 W 149 11 4~ 3250.99 26.01 169. 26 2974.87 3057.47 -945 .71 948.50 946.10 -926. 64 190.88 1.93 5958176. 05 599267.22 N 70 17 42.621 W 149 11 46.382 3346.94 31.21 172. 05 3059.08 3141.68 -991 .63 994.42 991.98 -971. 97 198.25 5.59 5958130. 83 599275.18 N 70 17 42.175 W 149 11 46.167 3442.80 31.52 172. 29 3140.93 3223.53 -1041 .48 1044.31 1041.77 -1021. 40 205.04 0.35 5958081. 50 599282.63 N 7017 41.689 W 149 11 45.969 3538.51 30.73 174. 03 3222.86 3305.46 -1090 .88 1093.78 1091.10 -1070. 51 210.94 1.25 5958032. 47 599289.18 N 70 17 41.206 W 149 11 45.797 3633.31 30.38 175. 22 3304.50 3387.10 -1138 .91 1141.98 1139.05 -1118. 49 215.46 0.74 5957984. 56 599294.33 N 70 17 40.734 W 149 11 45.665 3729.07 31.40 173. 80 3386.67 3469.27 -1187 .92 1191.14 1188.00 -1167. 42 220.17 1.31 5957935. 70 599299.68 N 70 17 40.253 W 149 11 45.528 3825.55 30.49 167. 34 3469.44 3552.04 -1237 .46 1240.71 1237.54 -1216. 30 228.25 3.57 5957886. 93 599308.41 N 70 17 39.772 W 149 11 45.293 3919.41 30.44 164. 30 3550.35 3632.95 -1284 .91 1288.29 1285.02 -1262. 43 239.91 1.64 5957840. 97 599320.66 N 70 17 39.318 W 149 11 44.953 4015.67 29.76 161. 48 3633.63 3716.23 -1332 .80 1336.56 1333.00 -1308. 56 254.10 1.63 5957795. 03 599335.46 N 70 17 38.865 W 149 11 44.540 4109.84 29.18 160. 66 3715.62 3798.22 -1378 .57 1382.88 1378.90 -1352. 38 269.12 0.75 5957751. 41 599351.06 N 7017 38.434 W 149 11 44.102 4205.18 28.81 161. 19 3799.01 3881.61 -1424 .20 1429.10 1424.70 -1396. 06 284.23 0.47 5957707. 95 599366.74 N 70 17 38.004 W 149 11 43.662 4298.72 28.91 163. 51 3880.93 3963.53 -1468 .94 1474.24 1469.59 -1439. 08 297.91 1.20 5957665. 12 599380.99 N 70 17 37.581 W 149 11 43.263 4394.07 27.97 165. 36 3964.78 4047.38 -1514 .13 1519.65 1514.89 -1482. 81 310.11 1.35 5957621. 55 599393.75 N 70 17 37.151 W 149 11 42.907 4489.61 23.90 166. 96 4050.68 4133.28 -1555 .81 1561.42 1556.64 -1523. 36 320.14 4.32 5957581. 14 599404.32 N 70 17 36.752 W 149 11 42.615 4585.49 18.14 171. 11 4140.15 4222.75 -1590 .16 1595.79 1590.99 -1557. 06 326.83 6.20 5957547. 54 599411.46 N 70 17 36.421 W 149 11 42.420 4679.47 13.84 174. 88 4230.47 4313.07 -1616 .00 1621.66 1616.78 -1582. 72 330.10 4.70 5957521. 92 599415.06 N 70 17 36.168 W 149 11 42.325 4775.66 10.38 168. 29 4324.51 4407.11 -1636 .13 1641.82 1636.88 -1602. 67 332.89 3.87 5957502. 01 599418.11 N 70 17 35.972 W 149 11 4 4870.45 8.67 141. 39 4418.04 4500.64 -1650 .95 1657.22 1651.80 -1616. 62 339.08 4.97 5957488. 14 599424.49 N 70 17 35.835 W 149 11 ~ 4 4965.43 8.63 109 .00 4511.99 4594.59 -1660 .69 1671.14 1661.88 -1624. 54 350.29 5.06 5957480. 37 599435.80 N 70 17 35.757 W 149 11 41.736 4988.42 8.81 100 .41 4534.72 4617.32 -1662 .14 1674.62 1663.45 -1625. 42 353.66 5.71 5957479. 54 599439.18 N 70 17 35.748 W 149 11 41.638 5060.69 10.40 77. 75 4606.00 4688.60 -1663 .82 1686.53 1665.63 -1625. 04 365.48 5.63 5957480. 08 599450.99 N 7017 35.752 W 149 11 41.294 5155.95 9.13 51 .38 4699.92 4782.52 -1659 .86 1702.41 1662.46 -1618. 49 379.79 4.83 5957486. 81 599465.22 N 70 17 35.816 W 149 11 40.877 5251.18 10.34 12. 69 4793.88 4876.48 -1648 .34 1717.93 1651.55 -1605. 43 387.58 6.85 5957499. 98 599472.83 N 70 17 35.945 W 149 11 40.650 5345.98 14.05 349 .32 4886.58 4969.18 -1628 .97 1737.69 1632.41 -1585. 80 387.32 6.44 5957519. 60 599472.31 N 70 17 36.138 W 149 11 40.657 5443.25 17.35 343 .55 4980.21 5062.81 -1602 .74 1763.99 1606.13 -1560. 28 381.02 3.75 5957545. 03 599465.68 N 7017 36.389 W 149 11 40.841 5539.23 16.45 346 .83 5072.05 5154.65 -1574 .85 1791.88 1578.24 -1533. 32 373.87 1.37 5957571. 89 599458.18 N 7017 36.654 W 149 11 41.049 5632.67 17.94 350 .43 5161.31 5243.91 -1547 .35 1819.49 1550.66 -1506. 25 368.46 1.96 5957598. 89 599452.41 N 70 17 36.920 W 149 11 41.207 5724.35 22.17 353 .90 5247.41 5330.01 -1515 .95 1850.92 1519.42 -1475. 11 364.28 4.79 5957629. 97 599447.81 N 70 17 37.227 W 149 11 41.329 5818.24 24.50 352 .36 5333.62 5416.22 -1478 .82 1888.10 1482.52 -1438. 19 359.81 2.57 5957666. 82 599442.86 N 70 17 37.590 W 149 11 41.459 SurveyEditor Ver SP 2. i Bld( doc40x_i 00) Z-112~Z-112 drilling~Z-112PB1~Z-112P61 Generated 3/1 3/2008 1 1:58 AM Page 2 of 3 Comments Measured Inclination Azimuth Sub-Sea TVD TVD Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft ft ft ft ft ft de 00 ft ftUS ftUS Jy 1 G.b6 L0.34 JJ I .33 J4 I b.y I JJV I .J I - 143b. 3 I I yZL5.b4 144L. LU - 13yi5. V / 3J4.U4 6005.96 28.21 350 .13 5501.82 5584.42 -1395. 57 1971.38 1399. 62 -1355 .89 347.14 6101.82 31.01 350 .89 5585.15 5667.75 -1348. 21 2018.74 1352. 44 -1309 .17 339.35 6194.56 33.56 351 .98 5663.55 5746.15 -1298. 70 2068.27 1303. 19 -1260. 19 331.99 6289.62 36.32 352 .94 5741.47 5824.07 -1244. 31 2122.71 1249. 21 -1206. 23 324:86 6386.12 39.83 355 .19 5817.42 5900.02 -1184. 97 2182.20 1190. 51 -1147. 05 318.76 6479.47 42.92 354 .14 5887.47 5970.07 -1123. 48 2243.90 1129. 84 -1085. 62 313.00 6575.41 46.29 354 .46 5955.76 6038.36 -1056. 31 2311.26 1063. 66 -1018. 60 306.32 6670.43 49.54 355 .04 6019.44 6102.04 -986. 05 2381.77 994. 66 -948. 38 299.87 6767.07 52.02 354 .69 6080.54 6163.14 -911. 45 2456.63 921. 69 -873. 82 293.17 6862.46 54.27 354 .79 6137.75 6220.35 -835. 39 2532.95 847. 59 -797. 82 286.17 6957.53 56.26 355 .05 6191.92 6274.52 -757. 56 2611.08 772. 26 -720. 00 279.26 7053.61 57.62 354 .87 6244.33 6326.93 -677. 33 2691.60 695. 28 -639. 79 272.18 7149.08 57.17 354 .60 6295.77 6378.37 -597. 18 2772.03 619. 19 -559. 70 264.80 7244.45 57.52 355 .25 6347.23 6429.83 -517. 19 2852.32 544. 56 -479. 72 257.70 7340.56 57.90 356 .03 6398.58 6481.18 -436. 33 2933.57 471. 42 -398. 71 251.53 7435.46 58.12 355 .99 6448.85 6531.45 -356. 29 3014.06 402. 33 -318. 42 245.93 7531.48 57.69 355 .90 6499.87 6582.47 -275. 38 3095.40 337. 62 -237. 28 240.17 7626.54 57.82 356 .94 6550.59 6633.19 -195. 49 3175.80 282. 77 -157. 04 235.15 7722.08 57.57 358 .14 6601.65 6684.25 -115. 44 3256.55 243. 95 -76. 36 231.69 7817.60 56.07 357 .89 6653.92 6736.52 -36. 27 3336.49 228. 95 3. 53 228.92 G.VV Jyb//Ub.tSb 2.09 5957748.94 2.95 5957795.54 2.82 5957844.42 2.96 5957898.28 3.91 5957957.37 3.39 5958018.70 3.52 5958085.63 3.45 5958155.75 2.58 5958230.21 2.36 5958306.11 2.11 5958383.82 1.42 5958463.92 0.53 5958543.90 0.68 5958623.77 0.79 5958704.68 0.23 5958784.89 0.45 5958865.94 0.94 5958946.10 1.09 5959026.71 1.59 5959106.56 7912.89 53.61 356.93 6708.79 6791.39 40.97 3414.39 239.64 81.35 225.41 2.71 5959184.32 Last Survey 7964.88 53.04 357.02 6739.85 6822.45 82.36 3456.09 254.85 122.99 223.21 1.11 5959225.92 TD (Projected) 8050.00 53.04 357.02 6791.02 6873.62 149.87 3524.10 291.04 190.91 219.67 0.00 5959293.78 Survey Type: Definitive Survey NOTES: GYD CT DMS - (Gyrodata -cont. drillpipe m/s -- Gyrodata pump-down multishot surveys with continuous tool (RGS-CT) in drill-pipe.) MWD + IFR + MS - (In-field referenced MWD with mull-station analysis and correction applied in post-processing. Assumes a BHA sag correction is applied to enhance inclination accuracy. ) Legal Description: Northing (Y) [ftUS] Easting (X) [ftUS] Surface : 4305 FSL 3613 FEL S19 T11 N R12E UM 5959100.01 599064.16 BHL : 4496 FSL 3393 FEL S19 Ti 1 N R12E UM 5959293.78 599281.28 Syy43b.5/ N /U 1 / :i/.yi54 W 14y 11 41 .(iL/ 599429.11 N 70 17 38.399 W 149 11 41.828 599420.70 N 70 17 38.859 W 149 11 42.055 599412.70 N 70 17 39.340 W 149 11 42.269 599404.86 N 70 17 39.871 W 149 11 42.477 599397.98 N 70 17 40.453 W 149 11 42.655 599391.42 N 70 17 41.057 W 149 11 42.823 599383.85 N 70 17 41.716 W 149 11 43.017 599376,48 N 70 17 42.407 W 149 11 43.205 599368.80 N 70 17 43.140 W 149 11 43.400 599360.80 N 70 17 43.888 W 149 11 43.604 599352.86 N 70 17 44.653 W 149 11 4~ 599344.73 N 70 17 45.442 W 149 11 44.012 599336.29 N 70 17 46.230 W 149 11 44.227 599328.14 N 70 17 47.016 W 149 11 44.434 599320.90 N 70 17 47.813 W 149 11 44.614 599314.24 N 70 17 48.603 W 149 11 44.777 599307.42 N 70 17 49.401 W 149 11 44.944 599301.34 N 70 17 50.190 W 149 11 45.091 599296.81 N 70 17 50.983 W 149 11 45.192 599292.99 N 70 17 51.769 W 149 11 45.272 599288.46 N 70 17 52.534 W 149 11 45.374 599285.71 N 70 17 52.944 W 149 11 45.439 599281.28 N 70 17 53.612 W 149 11 45.542 T ~/ . SurveyEditor Ver SP 2.1 Bld( doc40x_100) Z-112~Z-112 drilling~Z-112P61~Z-112P61 Generated 3/13/2008 11:58 AM Page 3 of 3 P ~~ Z-112P62 Survey Report Schlumberger Report Date: 11-Feb-08 Survey /DLS Computation Method: Minimum CuNature / Lubinski Client: BP Exploration Alaska Vertical Section Azimuth: 350.000° Field: Prudhoe Bay Unit - WOA Vertical Section Origin: N 0.000 ft, E 0.000 ft Structure /Slot: Z-PAD / Z-112 TVD Reference Datum: Rotary Table Well: Z-112 TVD Reference Elevation: 82.60 ft relative t0 MSL Borehole: Z-112P62 Sea Bed /Ground Level Elevation: 54.10 fl relative to MSL UWUAPI#: 500292338071 Magnetic Declination: 23.140° Survey Name /Date: Z-112PB2 /February 11, 2008 Total Field Strength: 57644.106 nT Tort /AHD / DDI / ERD ratio: 362.307° / 6961.09 ft / 6.632 / 1.034 Magnetic Dip: 80.859° Grid Coordinate System: NAD27 Alaska State Planes, Zone 04, US Feei Declination Date: February 04, 2008 Location LaVLong: N 7017 51.734, W 1491151.945 Magnetic Declination Model: BGGM 2007 Location Grid NIE Y/X: N 5959100.010 ttUS, E 599064.160 ftUS North Reference: True North Grid Convergence Angle: +0.75527773° Total Corr Mag North -> True North: +23.140° Grid Scale factor: 0.99991115 Local Coordinates Referenced To: Well Head Comments Measured Inclination Azimuth SutrSea TVD TVD Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure it de de ft ft ft tt ft ft ft de OOft ftUS ftUS h ~ t U.VV u.uu U.UU -+sz.nu V.UU V.VU U.UU U.UV U.UU U.UU U.UU 59591 UU. U1 599U1i4.16 N /U 1 / 51./34 W 149 11 51.945 GYD CT DMS 100.00 0.05 100.17 17.40 100.00 -0.02 0.04 0.04 -0.01 0.04 0.05 5959100. 00 599064.20 N 70 17 51.734 W 149 11 51.944 200.00 0.22 66.19 117.40 200.00 0.02 0.27 0.27 0.06 0.26 0.18 5959100. 08 599064.42 N 70 17 51.735 W 149 11 51.938 300.00 0.22 96.97 217.40 300.00 0.01 0.65 0.64 0.12 0.63 0.12 5959100. 13 599064.79 N 70 17 51.735 W 149 11 51.927 400.00 0.19 142.06 317.40 400.00 -0.20 0.99 0.92 -0.04 0.92 0.16 5959099. 98 599065.08 N 70 17 51.734 W 149 11 51.918 500.00 1.19 180.78 417.39 499.99 -1.36 2.17 1.57 -1.21 1.01 1.05 5959098. 82 599065.18 N 70 17 51.722 W 149 11 51.916 600.00 2.56 180.37 517.33 599.93 -4.58 5.44 4.58 -4.48 0.98 1.37 5959095. 55 599065.20 N 7017 51.690 W 149 11 51.917 700.00 4.52 182.05 617.14 699.74 -10.63 11.61 10.68 -10.65 0.82 1.96 5959089. 37 599065.12 N 70 17 51.630 W 149 11 51.921 800.00 6.38 178.83 716.68 799.28 -19.98 21.11 20.16 -20.14 0.80 1.88 5959079. 88 599065.22 N 70 17 51.536 W 149 11 51.922 900.00 7.86 179.80 815.91 898.51 -32.20 33.50 32.55 -32.54 0.93 1.48 5959067. 49 599065.52 N 70 17 51.414 W 149 11 51.918 1000.00 12.11 177.01 914.37 996.97 -49.36 50.84 49.88 -49.86 1.51 4.28 5959050 .18 599066.32 N 7017 51.244 W 149 11 51. MWD+IFR+MS 1039.29 13.99 175.98 952.65 1035.25 -58.18 59.71 58.75 -58.71 2.05 4.82 5959041 .34 599066.99 N 7017 51.157 W 149 11 51~ 1132.62 16.86 172.90 1042.61 1125.21 -82.92 84.52 83.52 -83.40 4.52 3.20 5959016. 68 599069.78 N 70 17 50.914 W 149 11 51. 1227.25 18.18 172.23 1132.84 1215.44 -111.38 113.01 111.95 -111.65 8.21 1.41 5958988. 49 599073.84 N 70 17 50.636 W 149 11 51.706 1322.51 19.42 170.56 1223.02 1305.62 -142.06 143.71 142.57 -142.00 12.82 1.42 5958958 .21 599078.85 N 70 17 50.338 W 149 11 51.572 1413.28 20.97 168.86 1308.21 1390.81 -173.39 175.04 173.80 -172.82 18.43 1.83 5958927. 46 599084.86 N 70 17 50.035 W 149 11 51.408 1511.24 22.56 169.42 1399.18 1481.78 -209.71 211.36 210.02 -208.49 25.27 1.64 5958891 .89 599092.17 N 7017 49.684 W 149 11 51.209 1607.00 23.37 168.91 1487.35 1569.95 -247.07 248.72 247.31 -245.19 32.29 0.87 5958855 .29 599099.68 N 70 17 49.323 W 149 11 51.004 1702.93 24.25 168.56 1575.12 1657.72 -285.79 287.45 285.96 -283.17 39.86 0.93 5958817 .42 599107.75 N 70 17 48.949 W 149 11 50.783 1798.88 24.79 166.29 1662.42 i 745.02 -325.56 327.26 325.66 -322.02 48.54 1.13 5958778 .68 599116.93 N 7017 48.567 W 149 11 50.530 1894.94 25.17 166.49 1749.49 1832.09 -366.05 367.83 366.09 -361.45 58.08 0.41 5958739. 39 599127.00 N 70 17 48.179 W 149 11 50.252 1990.56 25.15 166.82 1836.04 1918.64 -406.63 408.48 406.64 -401.01 67.47 0.15 5958699. 96 599136.90 N 7017 47.790 W 149 11 49.979 2086.73 24.83 166.48 1923.20 2005.80 -447.19 449.11 447.19 -440.54 76.85 0.36 5958660 .56 599146.80 N 7017 47.402 W 149 11 49.705 SurveyEditor Ver SP 2.1 Bld( doc40x_100 ) Z-112\Z-112\Z-112PB2\Z-112PB2 Generated 3/13/2008 11:58 AM Page 1 of 6 Comments Measured Inclination Azimuth Subsea TVD 7VD Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft ft ft ft ft ft de OOft ftUS ftUS ci6i.ba G4A3 IOO .IG CUV~.4V LVyC.VV -480. 81 468.81 460.81 -4/`J.11 6b.Zb U.Zb Oyb6bZZ.1Z byylbb./1 IV /V 1 / 4/.UL2 W 14y 11 4~J.4.~1 2277.30 26.57 165 .40 2095.68 2178.28 -528. 03 530.15 528.05 -519.17 96.42 2.05 5958582. 20 599167.41 N 70 17 46.628 W 149 11 49.135 2372.50 26.26 165 .84 2180.94 2263.54 -570. 25 572.50 570.31 -560.19 106.94 0.39 5958541. 32 599178.47 N 70 17 46.225 W 149 11 48.828 2468.35 25.86 165 .66 2267.04 2349.64 -612. 25 614.61 612.35 -601.01 117,31 0.43 5958500. 66 599189.37 N 70 17 45.823 W 149 11 48.526 2563.25 25.66 165 .12 2352.51 2435.11 -653. 36 655.85 653.52 -640.92 127.71 0.32 5958460. 89 599200.29 N 7017 45.431 W 149 11 48.223 2658.78 25.47 167 .49 2438.69 2521.29 -694. 49 697.07 694.70 -680.96 137.47 1.09 5958420. 98 599210.58 N 70 17 45.037 W 149 11 47.938 2754.10 24.98 167 .34 2524.92 2607.52 -735. 07 737.69 735.31 -720.61 146.32 0.52 5958381. 46 599219.95 N 7017 44.647 W 149 11 47.680 2849.16 24.68 167 .22 2611.19 2693.79 -774. 94 777.61 775.22 -759.55 155.11 0.32 5958342. 64 599229.25 N 70 17 44.264 W 149 11 47.424 2945.21 25.67 167 .84 2698.12 2780.72 -815. 76 818.47 816.07 -799.44 163,93 1.07 5958302. 87 599238.60 N 70 17 43.872 W 149 11 47,167 3040.16 25.24 167 .87 2783.85 2866.45 -856. 54 859.28 856.88 -839.34 172.52 0.45 5958263. 10 599247.71 N 70 17 43.479 W 149 11 46.917 3136.92 24.61 167 .88 2871.60 2954.20 -897. 29 900.05 897.66 -879.20 181,08 0.65 5958223. 35 599256.80 N 70 17 43.087 W 149 11 46.667 3180.65 24.79 167 .89 2911.33 2993.93 -915. 55 918.33 915.93 -897.07 184.92 0.41 5958205. 54 599260.87 N 7017 42.912 W 149 11 46• 3250.99 26.01 169 .26 2974.87 3057.47 -945. 71 948.50 946.10 -926.64 190.88 1.93 5958176. 05 599267.22 N 70 17 42.621 W 149 11 46.382 3346.94 31.21 172 .05 3059.08 3141.68 -991. 63 994.42 991.98 -971.97 198.25 5.59 5958130. 83 599275.18 N 70 17 42.175 W 149 11 46.167 3442.80 31.52 172 .29 3140.93 3223.53 -1041. 48 1044.31 1041.77 -1021.40 205.04 0.35 5958081. 50 599282.63 N 70 17 41.689 W 149 11 45.969 3538.51 30.73 174 .03 3222.86 3305.46 -1090. 88 1093.78 1091.10 -1070.51 210.94 1.25 5958032. 47 599289.18 N 70 17 41.206 W 149 11 45.797 3633.31 30.38 175 .22 3304.50 3387.10 -1138. 91 1141.98 1139.05 -1118.49 215.46 0.74 5957984. 56 599294.33 N 70 17 40.734 W 149 11 45.665 3729.07 31.40 173 .80 3386.67 3469.27 -1187. 92 1191.14 1188.00 -1167.42 220.17 1.31 5957935. 70 599299.68 N 70 17 40.253 W 149 11 45.528 3825.55 30,49 167 .34 3469.44 3552.04 -1237. 46 1240.71 1237.54 -1216.30 228.25 3.57 5957886. 93 599308.41 N 70 17 39.772 W 149 11 45.293 3919.41 30.44 164 .30 3550.35 3632.95 -1284. 91 1288.29 1285.02 -1262.43 239.91 1.64 5957840. 97 599320.66 N 70 17 39.318 W 149 11 44.953 4015.67 29.76 161 .48 3633.63 3716.23 -1332. 80 1336.56 1333.00 -1308.56 254.10 1.63 5957795. 03 599335.46 N 70 17 38.865 W 149 11 44.540 4109.84 29.18 160 .66 3715.62 3798.22 -1378. 57 1382.88 1378.90 -1352.38 269.12 0.75 5957751. 41 599351.06 N 70 17 38.434 W 149 11 44.102 4205.18 28.81 161 .19 3799.01 3881.61 -1424. 20 1429.10 1424.70 -1396.06 284.23 0.47 5957707. 95 599366.74 N 70 17 38.004 W 149 11 43.662 4298.72 28.91 163 .51 3880.93 3963.53 -1468. 94 1474.24 1469.59 -1439.08 297.91 1.20 5957665. 12 599380.99 N 70 17 37.581 W 149 11 43.263 4394.07 27.97 165 .36 3964.78 4047.38 -1514. 13 1519.65 1514.89 -1482.81 310.11 1.35 5957621. 55 599393.75 N 70 17 37.151 W 149 11 42.907 4489.61 23.90 166 .96 4050.68 4133.28 -1555. 81 1561.42 1556.64 -1523.36 320.14 4.32 5957581. 14 599404.32 N 70 17 36.752 W 149 11 42.615 4585.49 18.14 171 .11 4140.15 4222.75 -1590. 16 1595.79 1590.99 -1557.06 326.83 6.20 5957547. 54 599411.46 N 70 17 36.421 W 149 11 42.420 4679.47 13.84 174 .88 4230.47 4313.07 -1616. 00 1621.66 1616.78 -1582.72 330.10 4.70 5957521. 92 599415.06 N 7017 36.168 W 149 11 42.325 4775.66 10.38 168 .29 4324.51 4407.11 -1636. 13 1641.82 1636.88 -1602.67 332.89 3.87 5957502. 01 599418.11 N 70 17 35.972 W 149 11 42 4870.45 8.67 141 .39 4418.04 4500.64 -1650. 95 1657.22 1651.80 -1616.62 339.08 4.97 5957488. 14 599424.49 N 70 17 35.835 W 149 11 ~ 42. 4965.43 8.63 109 .00 4511.99 4594.59 -1660. 69 1671.14 1661.88 -1624.54 350.29 5.06 5957480. 37 599435.80 N 70 17 35.757 W 149 11 41.736 4988.42 8.81 100 .41 4534.72 4617.32 -1662. 14 1674.62 1663.45 -1625.42 353.66 5.71 5957479. 54 599439.18 N 70 17 35.748 W 149 11 41.638 5060.69 10.40 77 .75 4606.00 4688.60 -1663. 82 1686.53 1665.63 -1625.04 365.48 5.63 5957480. 08 599450.99 N 70 17 35.752 W 149 11 41.294 5155.95 9.13 51 .38 4699.92 4782.52 -1659. 86 1702.41 1662.46 -1618.49 379.79 4.83 5957486. 81 599465.22 N 70 17 35.816 W 149 11 40.877 5251.18 10.34 12 .69 4793.88 4876.48 -1648. 34 1717.93 1651.55 -1605.43 387.58 6.85 5957499. 98 599472.83 N 70 17 35.945 W 149 11 40.650 5345.98 14.05 349 .32 4886.58 4969.18 -1628. 97 1737.69 1632.41 -1585.80 387,32 6.44 5957519. 60 599472.31 N 7017 36.138 W 149 11 40.657 5443.25 17.35 343 .55 4980.21 5062.81 -1602. 74 1763.99 1606.13 -1560.28 381.02 3.75 5957545. 03 599465.68 N 70 17 36.389 W 149 11 40.841 5539.23 16.45 346 .83 5072.05 5154.65 -1574. 95 1791.88 1578.24 -1533.32 373.87 1.37 5957571. 89 599458.18 N 70 17 36.654 W 149 11 41.049 5632.67 17.94 350 .43 5161.31 5243.91 -1547. 35 1819.49 1550.66 -1506.25 368.46 1.96 5957598. 89 599452.41 N 70 17 36.920 W 149 11 41.207 5724.35 22.17 353 .90 5247.41 5330.01 -1515. 95 1850.92 1519.42 -1475.11 364.28 4.79 5957629. 97 599447.81 N 70 17 37.227 W 149 11 41.329 5818.24 24.50 352 .36 5333.62 5416.22 -1478. 82 1888.10 1482.52 -1438.19 359.81 2.57 5957666. 82 599442.86 N 7017 37.590 W 149 11 41.459 SurveyEditor Ver SP 2.1 Bld( doc40x_100) Z-112~Z-112~Z-112P62~Z-112PB2 Generated 3/13/2008 11:58 AM Page 2 of 6 Comments Measured Inclination Azimuth SulrSea TVD TVD Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft ft ft ft it tt de OOft ftUS ftUS O~IG.08 GO.J4 301.33 0418.51 OOUTAI -143x.31 1`JZ8.b4 144L. LV -13y8.U/ 304.V4 Z.UV Oy0//Ub.Bb byy436.0/ N/Ul/ 3/. ytS4 W14y 11 41.d'L/ 6005.96 28.21 350.13 5501.82 5584.42 -1395.57 1971.38 1399. 62 -1355.89 347.14 2.09 5957748.94 599429.11 N 70 17 38. 399 W 149 11 41.828 6101.82 31.01 350.89 5585.15 5667.75 -1348.21 2018.74 1352. 44 -1309.17 339.35 2.95 5957795.54 599420.70 N 70 17 38. 859 W 149 11 42.055 6194.56 33.56 351.98 5663.55 5746.15 -1298.70 2068.27 1303. 19 -1260.19 331.99 2.82 5957844.42 599412.70 N 70 17 39. 340 W 149 11 42.269 6289.62 36.32 352.94 5741.47 5824.07 -1244.31 2122.71 1249. 21 -1206.23 324.86 2.96 5957898.28 599404.86 N 70 17 39. 871 W 149 11 42.477 6386.12 39.83 355.19 5817.42 5900.02 -1184.97 2182.20 1190. 51 -1147.05 318.76 3.91 5957957.37 599397.98 N 70 17 40. 453 W 149 11 42.655 6479.47 42.92 354.14 5887.47 5970.07 -1123.48 2243.90 1129. 84 -1085.62 313.00 3.39 5958018.70 599391.42 N 70 17 41. 057 W 149 11 42.823 6575.41 46.29 354.46 5955.76 6038.36 -1056.31 2311.26 1063. 66 -1018.60 306.32 3.52 5958085.63 599383.85 N 70 17 41. 716 W 149 11 43.017 6670.43 49.54 355.04 6019.44 6102.04 -986.05 2381.77 994. 66 -948.38 299.87 3.45 5958155.75 599376.48 N 70 17 42. 407 W 149 11 43.205 6767.07 52.02 354.69 6080.54 6163.14 -911.45 2456.63 921. 69 -873.82 293.17 2.58 5958230.21 599368.80 N 70 17 43. 140 W 149 11 43.400 6862.46 54.27 354.79 6137.75 6220.35 -835.39 2532.95 847. 59 -797.82 286.17 2.36 5958306.11 599360.80 N 70 17 43. 888 W 149 11 43.604 ~ 6957.53 56.26 355.05 6191.92 6274.52 -757.56 2611.08 772. 26 -720.00 279.26 2.11 5958383.82 599352.86 N 70 17 44. 653 W 149 11 43 7053.61 57.62 354.87 6244.33 6326.93 -677.33 2691.60 695. 28 -639.79 272.18 1.42 5958463.92 599344.73 N 70 17 45. 442 W 149 11 44.012 7149.08 57.17 354.60 6295.77 6378.37 -597.18 2772.03 619. 19 -559.70 264.80 0.53 5958543.90 599336.29 N 70 17 46. 230 W 149 11 44.227 7244.45 57.52 355.25 6347.23 6429.83 -517.19 2852.32 544. 56 -479.72 257.70 0.68 5958623.77 599328.14 N 70 17 47. 016 W 149 11 44.434 7340.56 57.90 356.03 6398.58 6481.18 -436.33 2933.57 471. 42 -398.71 251.53 0.79 5958704.68 599320.90 N 70 17 47. 813 W 149 11 44.614 7435.46 58.12 355.99 6448.85 6531.45 -356.29 3014.06 402. 33 -318.42 245.93 0.23 5958784.89 599314.24 N 70 17 48. 603 W 149 11 44.777 7531.48 57.69 355.90 6499.87 6582.47 -275.38 3095.40 337. 62 -237.28 240.17 0.45 5958865.94 599307.42 N 70 17 49. 401 W 149 11 44.944 Tie-In Survey 7626.54 57.82 356.94 6550.59 6633.19 -195.49 3175.80 282. 77 -157.04 235.15 0.94 5958946.10 599301.34 N 70 17 50. 190 W 149 11 45.091 TOW (Blind) 7713.00 57.59 358.03 6596.78 6679.38 -123.03 3248.88 246. 70 -84.03 231.95 1.10 5959019.06 599297.17 N 70 17 50. 908 W 149 11 45.184 BOW (Blind) 7726.00 59.48 357.01 6603.57 6686.17 -112.03 3259.97 242. 69 -72.95 231.47 16.00 5959030.13 599296.55 N 70 17 51. 017 W 149 11 45.198 Inc+Trend 7750.70 58.81 357.99 6616.24 6698.84 -91.01 3281.18 236. 28 -51.76 230.54 4.35 5959051.29 599295.34 N 70 17 51. 225 W 149 11 45.225 7779.91 66.45 359.05 6629.66 67i 2.26 -65.38 3307.10 231. 33 -25.85 229.88 26.35 5959077.19 599294.34 N 70 17 51. 480 W 149 11 45.244 7810.01 73.99 0.07 6639.83 6722.43 -37.47 3335.40 229. 68 2.45 229.67 25.25 5959105.49 599293.75 N 70 17 51. 758 W 149 11 45.250 7840.59 82.00 1.04 6646.19 6728.79 -8.09 3365.29 232. 22 32.33 229.96 26.38 5959135.37 599293.65 N 70 17 52. 052 W 149 11 45.242 7873.13 91.69 2.06 6647.98 6730.58 23.71 3397.74 239. 76 64.77 230.84 29.94 5959167.82 599294.11 N 70 17 52. 371 W 149 11 45.216 MWD+IFR+MS 7903.44 97.41 3.01 6645.58 6728.18 53.19 3427.94 250. 84 94.95 232.18 19.13 5959198.00 599295.04 N 70 17 52. 668 W 149 11 45.177 7934.64 94.42 0.88 6642.36 6724.96 83.54 3458.97 265. 07 125.96 233.23 11.74 5959229.02 599295.69 N 70 17 52. 973 W 149 11 45.147 7965.75 92.99 358.15 6640.35 6722.95 114.16 3490.02 280. 93 157.00 232.96 9.89 5959260.05 599295.01 N 70 17 53. 278 W 149 11 4 7995.00 97.15 356.81 6637.77 6720.37 143.04 3519.14 297. 17 186.10 231.68 14.94 5959289.13 599293.35 N 70 17 53. 564 W 149 11 ~ 4 8026.31 97.43 358.58 6633.79 6716.39 173.81 3550.20 316. 61 217.13 230.43 5.68 5959320.14 599291.69 N 7017 53. 870 W 14911 45.228 8056.92 95.72 357.68 6630.29 6712.89 203.92 3580.61 337. 50 247.52 229.44 6.30 5959350.51 599290.30 N 70 17 54. 169 W 149 11 45.257 8086.38 95.40 353.44 6627.43 6710.03 233.09 3609.93 358. 04 276.75 227.17 14.37 5959379.70 599287.64 N 70 17 54. 456 W 149 11 45.323 8107.65 92.84 346.91 6625.90 6708.50 254.29 3631.14 372. 24 297.64 223.55 32.90 5959400.54 599283.75 N 70 17 54. 661 W 149 11 45.428 8139.48 93.01 346.15 6624.28 6706.88 286.02 3662.93 393. 27 328.55 216.15 2.44 5959431.35 599275.94 N 70 17 54. 966 W 149 11 45.644 8169.00 92.80 346.00 6622.78 6705.38 315.44 3692.41 413. 85 357.17 209.05 0.87 5959459.87 599268.47 N 70 17 55. 247 W 149 11 45.851 8199.91 92.94 345.37 6621.23 6703.83 346.22 3723.28 436. 35 387.08 201.42 2.09 5959489.67 599260.44 N 70 17 55. 541 W 149 11 46.073 8230.61 93.35 345.72 6619.55 6702.15 376.78 3753.94 459. 60 416.76 193.77 1.75 5959519.25 599252.40 N 70 17 55. 833 W 149 11 46.297 8260.88 93.36 345.35 6617.78 6700.38 406.91 3784.16 483. 34 446.02 186.22 1.22 5959548.41 599244.47 N 70 17 56. 121 W 149 11 46.517 8291.28 92.06 345.65 6616.34 6698.94 437.18 3814.52 507. 87 475.42 178.62 4.39 5959577.70 599236.48 N 7017 56. 410 W 149 11 46.738 8321.87 89.32 341.94 6615.97 6698.57 467.58 3845.11 532. 67 504.78 170.08 15.08 5959606.95 599227.56 N 70 17 56. 699 W 149 11 46.987 SurveyEditor Ver SP 2.1 Bld( doc40x_100) Z-112~Z-112~Z-112PB2~Z-112P62 Generated 3/13/2008 11:58 AM Page 3 of 6 Measured Vertical Along Hole Comments Inclination Azimuth Subsea TVD TVD Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft ft tt ft ft ft de OOft ftUS ttUS 8352.38 89.40 341. 72 6616.31 6698.91 497.78 3875.61 557.40 533. 77 160.57 0.77 5959635.80 599217.67 N 70 17 56.984 W 149 11 47.264 8382.69 89.54 341. 72 6616.59 6699.19 527.77 3905.92 582.48 562. 55 151.06 0.46 5959664.45 599207.78 N 70 17 57.267 W 149 11 47.541 8414.91 90.40 340. 98 6616.61 6699.21 559.62 3938.14 609.55 593. 08 140.76 3.52 5959694.84 599197.08 N 70 17 57.567 W 149 11 47.842 8445.44 90.73 341. 81 6616.31 6698.91 589.81 3968.67 635.66 622. 01 131.02 2.93 5959723.64 599186.96 N 70 17 57.852 W 149 11 48.126 8478.33 90.86 342. 81 6615.85 6698.45 622.40 4001.56 664.46 653. 34 121.03 3.07 5959754.83 599176.55 N 70 17 58.160 W 149 11 48.417 8510.21 90.95 342. 89 6615.35 6697.95 654.03 4033.43 692.85 683. 80 111.63 0.38 5959785.16 599166.75 N 70 17 58.459 W 149 11 48.691 8542.08 90.16 344. 01 6615.04 6697.64 685.69 4065.30 721,67 714. 35 102.55 4.30 5959815.58 599157.28 N 70 17 58.760 W 149 11 48.956 8574.32 88.82 344. 22 6615.33 6697.93 717.76 4097.54 751.22 745. 36 93.73 4.21 5959846.47 599148.04 N 7017 59.065 W 149 11 49.213 8605.73 88.58 345. 75 6616.04 6698.64 749.04 4128.94 780.39 775. 68 85.59 4.93 5959876.68 599139.51 N 70 17 59.363 W 149 11 49.450 8641.12 87.04 344. 73 6617.39 6699.99 784.28 4164.31 813.49 809. 88 76.58 5.22 5959910.76 599130.05 N 70 17 59.699 W 149 11 49.713 8670.00 87.80 345. 74 6618.69 6701.29 813.03 4193.16 840.63 837. 78 69.23 4.37 5959938.55 599122.33 N 70 17 59.974 W 149 11 49~ 8701.99 87.69 344. 25 6619.95 6702.55 844.87 4225.12 870.79 868. 65 60.95 4.67 5959969.31 599113.65 N 70 18 0.277 W 149 11 50. 8733.84 88.24 344. 93 6621.08 6703.68 876.56 4256.95 900.87 899. 34 52.50 2.74 5959999.88 599104.79 N 70 18 0.579 W 149 11 50.415 8764.84 88.82 345. 34 6621.88 6704.48 907.44 4287.94 930.36 929. 29 44.55 2.29 5960029.72 599096.45 N 70 18 0.874 W 149 11 50.646 8796.27 89.27 345. 03 6622.40 6705.00 938.75 4319.37 960.36 959. 67 36.51 1.74 5960059.99 599088.01 N 70 18 1.173 W 149 11 50.881 8828.93 87.28 344. 08 6623.38 6705.98 971.25 4352.01 991.52 991. 13 27.82 6.75 5960091.33 599078.91 N 70 18 1.482 W 149 11 51.134 8862.08 87.08 342. 51 6625.02 6707.62 1004.13 4385.12 1023.01 1022. 85 18.30 4.77 5960122.92 599068.97 N 70 18 1.794 W 149 11 51.412 8892.42 88.69 341. 91 6626.14 6708.74 1034.17 4415.44 1051.75 1051. 71 9.04 5.66 5960151.66 599059.33 N 70 18 2.078 W 149 11 51.682 8923.33 90.50 341. 77 6626.35 6708.95 1064.76 4446.35 1081.08 1081. 08 -0.60 5.87 5960180.89 599049.31 N 70 18 2.367 W 149 11 51.963 8955.11 90.30 341. 74 6626.13 6708.73 1096.21 4478.13 1111.31 1111. 26 -10.55 0.64 5960210.94 599038.97 N 70 18 2.663 W 149 11 52.253 8986.88 90.16 342. 55 6626.00 6708.60 1127.68 4509.90 1141.68 1141. 50 -20.29 2.59 5960241.04 599028.83 N 70 18 2.961 W 149 11 52.537 9018.18 90.17 343. 23 6625.91 6708.51 1158.74 4541.19 1171.79 1171. 42 -29.50 2.17 5960270.83 599019.23 N 70 18 3.255 W 149 11 52.805 9051.07 86.47 339. 72 6626.88 6709.48 1191.25 4574.07 1203.24 1202. 58 -39.94 15.50 5960301.85 599008.38 N 70 18 3.562 W 149 11 53.109 9082.26 87.88 338. 83 6628.42 6711.02 1221.85 4605.22 1232.77 1231. 72 -50.96 5.34 5960330.83 598996.97 N 70 18 3.848 W 149 11 53.431 9114.01 88.53 337. 88 6629.41 6712.01 1252.93 4636.95 1262.77 1261. 21 -62.67 3.62 5960360.17 598984.88 N 70 18 4.138 W 149 11 53.772 9144.31 89.28 338. 57 6629.99 6712.59 1282.59 4667.24 1291.46 1289. 34 -73.90 3.36 5960388.15 598973.28 N 70 18 4.415 W 149 11 54.100 9175.86 88.91 339. 05 6630.49 6713.09 1313.54 4698.79 1321.51 1318. 76 -85.31 1.92 5960417.41 598961.49 N 70 18 4.704 W 149 11 54.432 9207.75 88.70 339. 11 6631.15 6713.75 1344.84 4730.67 1352.00 1348. 54 -96.69 0.68 5960447.03 598949.71 N 70 18 4.997 W 149 11 54.764 9239.79 88.97 338. 79 6631.80 6714.40 1376.28 4762.71 1382.67 1378. 43 -108.20 1.31 5960476.77 598937.81 N 70 18 5.291 W 149 11 55 9271.96 89.76 338. 71 6632.16 6714.76 1407.83 4794.88 1413.51 1408. 41 -119.86 2.47 5960506.59 598925.76 N 70 18 5.586 W 149 11 ~ 55 9303.30 89.87 338. 39 6632.26 6714.86 1438.55 4826.21 1443.57 1437. 58 -131.32 1.08 5960535.61 598913.92 N 70 18 5.873 W 149 11 55.774 9336.63 89.83 338. 08 6632.35 6714.95 1471.18 4859.54 1475.55 1468. 54 -143.67 0.94 5960566.39 598901.16 N 70 18 6.177 W 149 11 56.134 9367.00 89.80 337. 87 6632.45 6715.05 1500.88 4889.91 1504.70 1496. 69 -155.06 0.70 5960594.39 598889.40 N 70 18 6.454 W 149 11 56.466 9397.55 90.69 338. 36 6632.32 6714.92 1530.77 4920.46 1534.10 1525. 04 -166.45 3.33 5960622.58 598877.64 N 70 18 6.733 W 149 11 56.798 9429.58 91.61 339 .54 6631.67 6714.27 1562.20 4952.49 1565.07 1554. 92 -177.95 4.67 5960652.31 598865.74 N 70 18 7.027 W 149 11 57.133 9460.83 91.27 339 .88 6630.89 6713.49 1592.94 4983.73 1595.44 1584. 23 -188.79 1.54 5960681.47 598854.53 N 70 18 7.315 W 149 11 57.449 9492.49 89.49 338 .26 6630.68 6713.28 1624.02 5015.39 1626.15 1613. 79 -200.09 7.60 5960710.88 598842.83 N 70 18 7.606 W 149 11 57.779 9524.23 89.52 337 .08 6630.95 6713.55 1655.03 5047.12 1656.79 1643. 15 -212.15 3.72 5960740.07 598830.39 N 70 18 7.895 W 149 11 58.131 9556.18 89.87 336 .94 6631.12 6713.72 i 686.16 5079.07 1687.58 1672. 56 -224.63 1.18 5960769.32 598817.52 N 70 18 8.184 W 149 11 58.495 9588.03 88.32 336 .89 6631.63 6714.23 1717.18 5110.92 1718.30 1701. 86 -237.12 4.87 5960798.44 598804.65 N 7018 8.472 W 149 11 58.859 SurveyEditor Ver SP 2.1 Bld( doc40x_100) Z-112~Z-112~Z-112PB2~Z-112P62 Generated 3/1 3/2008 1 1:58 AM Page 4 of 6 Comments Measured Inclination Azimuth Sub-Sea ND ND Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft ft ft it ft ft de 100 ft ftUS ftUS `JbLU.3i3 25/.IL 33/.Ib bb:SL.`JI b/Ib.bl I/4i5.bt5 5143.L4 1/4y.b3 1/31.1J'L -'L4`J~ ./.i 3.iSU byliUtiLt1.U:i 59ti/91,ti5 N/U 168. /(15 W1491159.226 9651.39 87.29 336.15 6634.42 6717.02 1778.81 5174.22 1779.45 1760.06 -262 .01 3.30 5960856.30 598779.00 N 70 18 9. 044 W 149 11 59.584 9683.11 89.18 336.99 6635.40 6718.00 1809.65 5205.92 1810.10 1789.15 -274 .61 6.52 5960885.22 598766.01 N 70 18 9. 330 W 149 11 59.952 9715.40 90.93 339.04 6635.37 6717.97 1841.23 5238.21 1841.54 1819.09 -286 .70 8.35 5960914.99 598753.53 N 70 18 9. 625 W 149 12 0.304 9746.67 90.79 341.33 6634.90 6717.50 1872.04 5269.47 1872.25 1848.50 -297. 30 7.34 5960944.26 598742.55 N 70 18 9. 914 W 149 12 0.613 9777.98 89.04 341.59 6634.95 6717.55 1903.00 5300.78 1903.15 1878.18 -307. 25 5.65 5960973.81 598732.20 N 70 18 10. 206 W 149 12 0.904 9809.94 87.84 340.94 6635.82 6718.42 1934.58 5332.73 1934.67 1908.44 -317 .52 4.27 5961003.92 598721.55 N 70 18 10. 504 W 149 12 1.203 9841.62 87.36 342.10 6637.14 6719.74 1965.88 5364.38 1965.93 1938.46 -327 .55 3.96 5961033.80 598711.12 N 70 18 10. 799 W 149 12 1.496 9873.49 87.43 341.34 6638.59 6721.19 1997.39 5396.22 1997.41 1968.69 -337 .53 2.39 5961063.90 598700.74 N 70 18 11. 096 W 149 12 1.787 9906.00 86.74 341.74 6640.25 6722.85 2029.50 5428.69 2029.51 1999.48 -347 .82 2.45 5961094.55 598690.05 N 70 18 11. 399 W 149 12 2.087 9937.81 86.98 340.94 6641.99 6724.59 2060.90 5460.45 2060.90 2029.58 -357. 98 2.62 5961124.51 598679.50 N 70 18 11. 695 W 149 12 2.383 9969.35 88.67 340.42 6643.19 6725,79 2092.00 5491.97 2092.01 2059.32 -368 .40 5.61 5961154.10 598668.68 N 70 18 11. 987 W 149 12 2~ 10001.69 89.25 343.34 6643.77 6726.37 2124.01 5524.30 2124.03 2090.04 -378 .46 9.20 5961184.70 598658.22 N 70 18 12. 290 W 149 12 2. 10033.22 88.90 341.60 6644.28 6726.88 2155.26 5555.83 2155.31 2120.10 -387 .96 5.63 5961214.62 598648.33 N 70 18 12. 585 W 149 12 3.257 10064.76 90.35 342.25 6644.49 6727.09 2186.49 5587.36 2186.57 2150.09 -397 .74 5.04 5961244.47 598638.15 N 70 18 12. 880 W 149 12 3.542 10097.23 90.35 342.73 6644.29 6726.89 2218.68 5619.83 2218.80 2181.05 -407 .51 1.48 5961275.30 598627.98 N 70 18 13. 185 W 149 12 3.827 10129.40 90.28 342.03 6644.11 6726.71 2250.57 5652.00 2250.73 2211.71 -417. 25 2.19 5961305.83 598617.84 N 70 18 13. 486 W 149 12 4.11 i 10160.60 90.24 342.57 6643.97 6726.57 2281.48 5683.20 2281.69 2241.43 -426. 73 1.74 5961335.42 598607.96 N 70 18 13. 778 W 149 12 4.388 10193.65 90.31 342.70 6643.81 6726.41 2314.26 5716.25 2314.53 2272.98 -436. 60 0.45 5961366.83 598597.68 N 70 18 14. 089 W 149 12 4.676 10224.67 90.31 342.80 6643.64 6726.24 2345.03 5747.27 2345.36 2302.60 -445. 80 0.32 5961396.33 598588.09 N 70 18 14. 380 W 149 12 4.944 10257.27 90.45 343.23 6643.43 6726.03 2377.39 5779.87 2377.78 2333.78 -455 .32 1.39 5961427.37 598578.16 N 70 18 14. 687 W 149 12 5.222 10289.79 90.72 343.05 6643.10 6725.70 2409.67 5812.39 2410.13 2364.90 -464 .75 1.00 5961458.36 598568.32 N 70 18 14. 993 W 149 12 5.497 10319.95 90.96 343.79 6642.65 6725.25 2439.63 5842.55 2440.16 2393.80 -473 .35 2.58 5961487.15 598559.34 N 70 18 15. 277 W 149 12 5.748 10352.35 91.41 344.59 6641.98 6724.58 2471.86 5874.94 2472.44 2424.97 -482. 18 2.83 5961518.19 598550.10 N 70 18 15. 584 W 149 12 6.005 10384.16 91.44 344.45 6641.19 6723.79 2503.51 5906.74 2504.16 2455.62 -490. 67 0.45 5961548.72 598541.21 N 70 18 15. 885 W 149 12 6.253 10415.69 91.31 344.47 6640.44 6723.04 2534.89 5938.26 2535.59 2485.99 -499 .11 0.42 5961578.98 598532.37 N 70 18 16. 184 W 149 12 6.499 10446.21 91.27 345.11 6639.75 6722.35 2565.27 5968.77 2566.04 2515.43 -507 .12 2.10 5961608.31 598523.98 N 70 18 16. 473 W 149 12 6.732 10477.42 89.21 343.87 6639.62 6722.22 2596.34 5999.98 2597.17 2545.50 -515 .46 7.70 5961638.26 598515.24 N 70 18 16. 769 W 149 12 6.976 10509.85 90.04 342.43 6639.83 6722.43 2628.53 6032.41 2629.45 2576.53 -524 .86 5.13 5961669.17 598505.43 N 70 18 17. 074 W 149 12 7.250 10539.57 91.31 342.63 6639.48 6722.08 2658.00 6062.13 2659.01 2604.88 -533. 78 4.33 5961697.39 598496.14 N 70 18 17. 353 W 149 12 7~ 10569.91 91.48 343.64 6638.74 6721.34 2688.11 6092.46 2689.21 2633.91 -542. 58 3.37 5961726.30 598486.96 N 70 18 17. 638 W 149 12 7.767 10601.00 90.48 344.61 6638.21 6720.81 2719.03 6123.54 2720.21 2663.81 -551 .09 4.48 5961756.08 598478.06 N 70 18 17. 932 W 149 12 8.015 10632.77 89.39 343.44 6638.25 6720.85 2750.63 6155.31 2751.89 2694.35 -559. 83 5.03 5961786.50 598468.92 N 70 18 18. 233 W 149 12 8.270 10663.41 90.35 343.23 6638.32 6720.92 2781.06 6185.95 2782.42 2723.70 -568 .62 3.21 5961815.73 598459.74 N 70 18 18. 521 W 149 12 8.526 10696.05 90.96 343.76 6637.94 6720.54 2813.49 6218.59 2814.95 2754.99 -577 .89 2.48 5961846.90 598450.06 N 70 18 18. 829 W 149 12 8.797 10727.97 88.22 343.73 6638.17 6720.77 2845.22 6250.51 2846.77 2785.63 -586 .82 8.58 5961877.41 598440.73 N 70 18 19. 131 W 149 12 9.057 10757.27 89.15 342.86 6638.84 6721.44 2874.31 6279.80 2875.96 2813.69 -595 .24 4.35 5961905.35 598431.94 N 70 18 19. 406 W 149 12 9.303 10788.67 90.96 343.83 6638.81 6721.41 2905.49 6311.20 2907.26 2843.77 -604 .24 6.54 5961935.31 598422.54 N 70 18 19. 702 W 149 12 9.565 10820.63 91.10 345.09 6638.24 6720.84 2937.30 6343.15 2939.15 2874.56 -612 .80 3.97 5961965.98 598413.58 N 70 18 20. 005 W 149 12 9.815 10850.53 91.20 344.26 6637.64 6720.24 2967.06 6373.05 2969.00 2903.39 -620 .70 2.80 5961994.70 598405.30 N 70 18 20. 289 W 149 12 10.045 10883.23 90.65 344.91 6637.11 6719.71 2999.61 6405.74 3001.64 2934.91 -629.39 2.60 5962026.10 598396.19 N 70 18 20.599 W 149 12 10.299 SurveyEditor Ver SP 2.1 Bld( doc40x_100) Z-112~Z-112~Z-112PB2~Z-112P62 Generated 3/1 3/2008 1 1:58 AM Page 5 of 6 Comments Measured Inclination Azimuth Sub-Sea TVD TVD Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft }t }t ft ft ft de 00 ft ftUS ftUS I Val/.VD aa.Va 344.GU Obi/.Zb b/I`J.ab 3U13.3/ b41`J.bb 3V10.43 Zy4a.Z3 -b33. U/ ly.Gy bybLU3y.3/ 10915.34 85.65 347 .98 6638.27 6720.87 3031.58 6437.82 3033.68 2965.95 -637. 46 24.54 5962057. 03 10947.70 83.68 346 .81 6641.27 6723.87 3063.77 6470.04 3065.90 2997.39 -644. 49 7.07 5962088. 37 10979.06 85.13 346 .56 6644.33 6726.93 3094.93 6501.25 3097.10 3027.76 -651. 68 4.69 5962118. 64 11010.00 87.19 347 .59 6646.40 6729.00 3125.75 6532.12 3127.96 3057.85 -658. 59 7.44 5962148. 63 11040.65 88.46 347 .24 6647.57 6730.17 3156.35 6562.75 3158.59 3087.74 -665. 26 4.30 5962178. 43 11072.27 90.11 347 .07 6647.96 6730.56 3187.93 6594.36 3190.20 3118.56 -672. 29 5.25 5962209. 16 11104.53 91.72 347 .13 6647.45 6730.05 3220.14 6626.62 3222.46 3150.00 -679. 49 4.99 5962240. 50 11135.92 91.96 345 .04 6646.44 6729.04 3251.44 6657.99 3253.82 3180.46 -687. 03 6.70 5962270. 85 11168.00 92.06 343 .31 6645.31 6727.91 3283.33 6690.05 3285.81 3211.30 -695. 78 5.40 5962301. 57 11199.42 93.57 343 .52 6643.77 6726.37 3314.51 6721.43 3317.10 3241.38 -704. 73 4.85 5962331. 52 11231.02 95.36 343 .85 6641.31 6723.91 3345.82 6752.93 3348.53 3271.61 -713. 58 5.76 5962361. 63 11263.10 96.57 342 .01 6637.98 6720.58 3377.48 6784.84 3380.32 3302.11 -722. 95 6.84 5962392. 00 11293.03 98.50 342 .38 6634.05 6716.65 3406.88 6814.51 3409.86 3330.36 -732. 02 6.56 5962420. 13 11326.27 99.09 344 .58 6628.97 6711.57 3439.51 6847.36 3442.62 3361.85 -741. 36 6.78 5962451. 49 11357,04 98.09 342 .90 6624.37 6706.97 3469.75 6877.78 3472.98 3391.05 -749. 88 6.30 5962480. 58 Last Survey 11378.33 96.98 344 .25 6621.58 6704.18 3490.73 6898.89 3494.03 3411.30 -755. 85 8.17 5962500. 74 TD (Projected) 11441.00 96.98 344 .25 6613.96 6696.56 3552.62 6961.09 3556.14 3471.17 -772. 73 0.00 5962560. 38 Survey Type: Definitive Survey NOTES: GYD CT DMS - (Gyrodata -cont. drillpipe m/s -- Gyrodata pump-down multishot surveys with continuous tool ( RG S-CT) in drill-pipe.) INC+TREND - (Inclinometer + known azi trend -- Inclination only surve ys in near-vertical hole-where formation dip and experience ena bles direction of drift to be predicted. Replaces ex-BP "Inclinometer (azim uth in known quadrant)" model. MWD + IFR + MS - (In-field referenced MWD with mull-station analysis and correction applied in post-processing. Assumes a BHA sag correction is app lied to enhance inclination accuracy. ) Legal Description: Northing (Y) [ftUS] Easting (X) [ftUS] Surface : 4305 FSL 3613 FEL S19 T11 N R12E UM 5959100.01 599064.16 BHL : 2496 FSL 4372 FEL S18 T11 N R12E UM 5962560.38 598245.81 byiS;iy'L.;i4 N /U 1 tSLU. /~U W 14y 1L 1 U.4U6 598387.72 N 70 18 20.904 W 149 12 10.534 598380.27 N 70 18 21.213 W 149 12 10.739 598372.69 N 70 18 21.512 W 149 12 10.949 598365.39 N 70 18 21.808 W 149 12 11.150 598358.32 N 70 18 22.102 W 149 12 11.345 598350.89 N 70 18 22.405 W 149 12 11.550 598343.27 N 70 18 22.714 W 149 12 11.760 598335.33 N 70 18 23.014 W 149 12 11.980 598326.18 N 70 18 23.317 W 149 12 12.235 598316.83 N 70 18 23.613 W 149 12 12.497 598307.58 N 70 18 23.910 W 149 12 12~ 598297.82 N 70 18 24.210 W 149 12 13. 598288.37 N 70 18 24.488 W 149 12 13.293 598278.62 N 70 18 24.797 W 149 12 13.565 598269.72 N 70 18 25.085 W 149 12 13.814 598263.48 N 70 18 25.284 W 149 12 13.988 598245.81 N 70 18 25.873 W 149 12 14.480 • r N L SurveyEditor Ver SP 2.1 Bld( doc40x_100) Z-112~Z-112~Z-112P62~Z-112PB2 Generated 3/13/2008 11:58 AM Page 6 of 6 Yv I SCHLUMBERGER Survey report Client ...................: BP Exploration (Alaska) Inc. Field ....................: Borealis Well ...................... Z-112 API number ...............: 50-029-23380-00 Engineer .................: St. Amour Rig :.....................: North Slope Borough STATE :.................... Alaska ----- Survey calculation methods------------- Method for positions.....: Minimum curvature Method for DLS...........: Mason & Taylor ----- Depth reference ----------------------- Permanent datum..........: Mean Sea Level Depth reference..........: Driller'sPipe Tally GL above permanent.......: 56.52 ft KB above permanent.......: N/A (Topdrive) DF above permanent.......: 82.60 ft ----- Vertical section origin---------------- Latitude (+N/S-).........: 0.00 ft Departure (+E/W-)........: 0.00 ft ----- Platform reference point--------------- Latitude (+N/S-).........: -999.25 ft Departure (+E/W-)........: -999.25 ft Azimuth from Vsect Origin to target: 350.00 degrees 14-Feb-2008 15:01:51 Page 1 of 10 Spud date ................: 17-Jan-08 Last survey date.........: 14-Feb-08 Total accepted surveys...: 269 MD of first survey.......: 0.00 ft MD of last survey........: 13600.00 ft ----- Geomagnetic data ---------------------- Magnetic model...........: BGGM version 2007 Magnetic date ............: 18-Jan-2008 Magnetic field strength..: 57643.35 LAMA Magnetic dec (+E/W-).....: 23.17 degrees Magnetic dip .............: 80.86 degrees ----- MWD survey Reference Reference G ............... Reference H ............... Reference Dip ............: Tolerance of G...........: Tolerance of H.... ...... Tolerance of Dip.........: Criteria --------- 1002.68 meal 57643.50 GAMA 80.86 degrees (+/-) 2.50 meal (+/-)300.00 LAMA (+/-) 0.45 degrees ----- Corrections --------------------------- Magnetic dec (+E/W-).....: 23.12 degrees Grid convergence (+E/W-).: 0.00 degrees Total az corr (+E/W-)....: 23.12 degrees (Total az corr = magnetic dec - grid conv) Survey Correction Type .... I=Sag Corrected Inclination M=Schlumberger Magnetic Correction S=Shell Magnetic Correction F=Failed Axis Correction R=Magnetic Resonance Tool Correction D=Dmag Magnetic Correction • • SCHLUP~IBERGER Survey Report 14 -Feb-2008 15:01:51 Page 2 of 10 Seq Measured Intl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - (ft) (deg) (deg) (ft) (ft) (ft) (ft) (ft) (ft) (deg) 100f) type (deg) 1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 TIP None 2 100.00 0.05 100.17 100.00 100.00 -0.02 -0.01 0.04 0.04 100.17 0.05 BP _GYD CT DMS 3 200.00 0.22 66.19 100.00 200.00 0.02 0.06 0.26 0.27 76.64 0.18 BP _GYD CT DMS 4 300.00 0.22 96.97 100.00 300.00 0.01 0.12 0.63 0.64 79.50 0.12 BP _GYD CT DMS 5 400.00 0.19 142.06 100.00 400.00 -0.20 -0.04 0.92 0.92 92.35 0.16 BP GYD CT DMS 6 500.00 1.19 180.78 100.00 499.99 -1.36 -1.21 1.01 1.57 140.13 1.05 BP _GYD CT DMS 7 600.00 2.56 180.37 100.00 599.93 -4.58 -4.48 0.98 4.58 167.66 1.37 BP _GYD CT DMS • 8 700.00 4.52 182.05 100.00 699.74 -10.63 -10.65 0.82 10.68 175.58 1.96 BP _GYD CT DMS 9 800.00 6.38 178.83 100.00 799.28 -19.98 -20.14 0.80 20.16 177.74 1.88 BP _GYD CT DMS 10 900.00 7.86 179.80 100.00 898.51 -32.20 -32.54 0.93 32.55 178.36 1.48 BP GYD CT DMS 11 1000.00 12.11 177.01 100.00 996.97 -49.36 -49.86 1.51 49.88 178.27 4.28 BP _GYD CT DMS 12 1039.29 13.99 175.98 39.29 1035.25 -58.18 -58.71 2.05 58.75 178.00 4.82 BP _MWD+IFR+MS 13 1132.62 16.86 172.90 93.33 1125.21 -82.92 -83.40 4.52 83.52 176.90 3.20 BP _MWD+IFR+MS 14 1227.25 18.18 172.23 94.63 1215.44 -111.38 -111.65 8.21 111.95 175.79 1.41 BP _MWD+IFR+MS 15 1322.51 19.42 170.56 95.26 1305.62 -142.06 -142.00 12.82 142.57 174.84 1.42 BP MWD+IFR+MS 16 1413.28 20.97 168.86 90.77 1390.81 -173.39 -172.82 18.43 173.80 173.91 1.83 BP _MWD+IFR+MS 17 1511.24 22.56 169.42 97.96 1481.78 -209.71 -208.49 25.27 210.02 173.09 1.64 BP _MWD+IFR+MS 18 1607.00 23.37 168.91 95.76 1569.95 -247.07 -245.19 32.29 247.31 172.50 0.87 BP _MWD+IFR+MS 19 1702.93 24.25 168.56 95.93 1657.72 -285.79 -283.17 39.86 285.96 171.99 0.93 BP _MWD+IFR+MS 20 1798.88 24.79 166.29 95.95 1745.02 -325.56 -322.02 48.54 325.66 171.43 1.13 BP MWD+IFR+MS 21 1894.94 25.17 166.49 96.06 1832.09 -366.05 -361.45 58.08 366.09 170.87 0.41 BP _MWD+IFR+MS • 22 1990.56 25.15 166.82 95.62 1918.64 -406.63 -401.01 67.47 406.64 170.45 0.15 BP _MWD+IFR+MS 23 2086.73 24.83 166.48 96.17 2005.80 -447.19 -440.54 76.85 447.19 170.11 0.36 BP _MWD+IFR+MS 24 2181.63 24.63 166.12 94.90 2092.00 -486.81 -479.11 86.25 486.81 169.80 0.26 BP _MWD+IFR+MS 25 2277.30 26.57 165.40 95.67 2178.28 -528.03 -519.17 96.42 528.05 169.48 2.05 BP MWD+IFR+MS 26 2372.50 26.26 165.84 95.20 2263.54 -570.25 -560.19 106.94 570.31 169.19 0.39 BP _MWD+IFR+MS 27 2468.35 25.86 165.66 95.85 2349.64 -612.25 -601.01 117.31 612.35 168.96 0.43 BP _MWD+IFR+MS 28 2563.25 25.66 165.12 94.90 2435.11 -653.36 -640.92 127.71 653.52 168.73 0.32 BP _MWD+IFR+MS 29 2658.78 25.47 167.49 95.53 2521.29 -694.49 -680.96 137.47 694.70 168.59 1.09 BP _MWD+IFR+MS 30 2754.10 24.98 167.34 95.32 2607.52 -735.07 -720.61 146.32 735.31 168.52 0.52 BP MWD+IFR+MS SCHLUMBERGER Survey Report 14 -Feb-2008 15:01:51 Page 3 of 10 Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - (ft) (deg) (deg) (ft) (ft) (ft) (ft) (ft) (ft) (deg) 100f) type (deg) 31 2849.16 24.68 167.22 95.06 2693.79 -774.94 -759.55 155.11 775.22 168.46 0.32 BP _MWD+IFR+MS 32 2945.21 25.67 167.84 96.05 2780.72 -815.76 -799.44 163.93 816.07 168.41 1.07 BP _MWD+IFR+MS 33 3040.16 25.24 167.87 94.95 2866.45 -856.54 -839.34 172.52 856.88 168.39 0.45 BP _MWD+IFR+MS 34 3136.92 24.61 167.88 96.76 2954.20 -897.29 -879.20 181.08 897.66 168.36 0.65 BP _MWD+IFR+MS 35 3180.65 24.79 167.89 43.73 2993.93 -915.55 -897.07 184.92 915.93 168.35 0.41 BP _MWD+IFR+MS 36 3250.99 26.01 169.26 70.34 3057.47 -945.71 -926.64 190.88 946.10 168.36 1.93 BP_MWD+IFR+MS 37 3346.94 31.21 172.05 95.95 3141.68 -991.63 -971.97 198.25 991.98 168.47 5.59 BP _MWD+IFR+MS 38 3442.80 31.52 172.29 95.86 3223.53 -1041.48 -1021.40 205.04 1041.77 168.65 0.35 BP _MWD+IFR+MS 39 3538.51 30.73 174.03 95.71 3305.46 -1090.88 -1070.51 210.94 1091.10 168.85 1.25 BP _MWD+IFR+MS 40 3633.31 30.38 175.22 94.80 3387.10 -1138.91 -1118.49 215.46 1139.05 169.10 0.74 BP _MWD+IFR+MS 41 3729.07 31.40 173.80 95.76 3469.27 -1187.92 -1167.42 220.17 1188.00 169.32 1.31 BP _MWD+IFR+MS 42 3825.55 30.49 167.34 96.48 3552.04 -1237.46 -1216.30 228.25 1237.54 169.37 3.57 BP _MWD+IFR+MS 43 3919.41 30.44 164.30 93.86 3632.95 -1284.91 -1262.43 239.91 1285.02 169.24 1.64 BP _MWD+IFR+MS 44 4015.67 29.76 161.48 96.26 3716.23 -1332.80 -1308.56 254.10 1333.00 169.01 1.63 BP _MWD+IFR+MS 45 4109.84 29.18 160.66 94.17 3798.22 -1378.57 -1352.38 269.12 1378.90 168.75 0.75 BP _MWD+IFR+MS 46 4205.18 28.81 161.19 95.34 3881.61 -1424.20 -1396.06 284.23 1424.70 168.49 0.47 BP _MWD+IFR+MS 47 4298.72 28.91 163.51 93.54 3963.53 -1468.94 -1439.08 297.91 1469.59 168.30 1.20 BP _MWD+IFR+MS 48 4394.07 27.97 165.36 95.35 4047.38 -1514.13 -1482.81 310.11 1514.89 168.19 1.35 BP _MWD+IFR+MS 49 4489.61 23.90 166.96 95.54 4133.28 -1555.81 -1523.36 320.14 1556.64 168.13 4.32 BP _MWD+IFR+MS 50 4585.49 18.14 171.11 95.88 4222.75 -1590.16 -1557.06 326.83 1590.99 168.15 6.20 BP MWD+IFR+MS 51 4679.47 13.84 174.88 93.98 4313.07 -1616.00 -1582.72 330.10 1616.78 168.22 4.70 BP _MWD+IFR+MS 52 4775.66 10.38 168.29 96.19 4407.11 -1636.13 -1602.67 332.89 1636.88 168.27 3.87 BP • _MWD+IFR+MS 53 4870.45 8.67 141.39 94.79 4500.64 -1650.95 -1616.62 339.08 1651.80 168.15 4.97 BP _MWD+IFR+MS 54 4965.43 8.63 109.00 94.98 4594.59 -1660.69 -1624.54 350.29 1661.88 167.83 5.06 BP _MWD+IFR+MS 55 4988.42 8.81 100.41 22.99 4617.32 -1662.14 -1625.42 353.66 1663.45 167.73 5.71 BP MWD+IFR+MS 56 5060.69 10.40 77.75 72.27 4688.60 -1663.82 -1625.04 365.48 1665.63 167.32 5.63 BP _MWD+IFR+MS 57 5155.95 9.13 51.38 95.26 4782.52 -1659.86 -1618.49 379.79 1662.46 166.79 4.83 BP _MWD+IFR+MS 58 5251.18 10.34 12.69 95.23 4876.48 -1648.34 -1605.43 387.58 1651.55 166.43 6.85 BP _MWD+IFR+MS 59 5345.98 14.05 349.32 94.80 4969.18 -1628.97 -1585.80 387.32 1632.41 166.27 6.44 BP _MWD+IFR+MS 60 5443.25 17.35 343.55 97.27 5062.81 -1602.74 -1560.28 381.02 1606.13 166.28 3.75 BP MWD+IFR+MS SCHLUMBERGER Survey Report 14 -Feb-2008 15:01:51 Page 4 of 10 Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - (ft) (deg) (deg) (ft) (ft) (ft) (ft) (ft) (ft) (deg) 100f) type (deg) 61 5539.23 16.45 346.83 95.98 5154.65 -1574.95 - 1533.32 373.87 1578.24 166.30 1.37 BP _MWD+IFR+MS 62 5632.67 17.94 350.43 93.44 5243.91 -1547.35 - 1506.25 368.46 1550.66 166.25 1.96 BP _MWD+IFR+MS 63 5724.35 22.17 353.90 91.68 5330.01 -1515.95 - 1475.11 364.28 1519.42 166.13 4.79 BP _MWD+IFR+MS 64 5818.24 24.50 352.36 93.89 5416.22 -1478.82 - 1438.19 359.81 1482.52 165.95 2.57 BP _MWD+IFR+MS 65 5912.68 26.34 351.33 94.44 5501.51 -1438.31 - 1398.07 354.04 1442.20 165.79 2.00 BP MWD+IFR+MS 66 6005.96 28.21 350.13 93.28 5584.42 -1395.57 - 1355.89 347.14 1399.62 165.64 2.09 BP _MWD+IFR+MS 67 6101.82 31.01 350.89 95.86 5667.75 - 1348.21 - 1309.17 339.35 1352.44 165.47 2.95 BP _MWD+IFR+MS • 68 6194.56 33.56 351.98 92.74 5746.15 -1298.70 - 1260.19 331.99 1303.19 165.24 2.82 BP _MWD+IFR+MS 69 6289.62 36.32 352.94 95.06 5824.07 -1244.31 - 1206.23 324.86 1249.21 164.93 2.96 BP _MWD+IFR+MS 70 6386.12 39.83 355.19 96.50 5900.02 - 1184.97 - 1147.05 318.76 1190.51 164.47 3.91 BP MWD+IFR+MS 71 6479.47 42.92 354.14 93.35 5970.07 - 1123.48 - 1085.62 313.00 1129.84 163.92 3.39 BP _MWD+IFR+MS 72 6575.41 46.29 354.46 95.94 6038.36 - 1056.31 - 1018.60 306.32 1063.66 163.26 3.52 BP _MWD+IFR+MS 73 6670.43 49.54 355.04 95.02 6102.04 -986.05 -948.38 299.87 994.66 162.45 3.45 BP _MWD+IFR+MS 74 6767.07 52.02 354.69 96.64 6163.14 -911.45 -873.82 293.17 921.69 161.45 2.58 BP _MWD+IFR+MS 75 6862.46 54.27 354.79 95.39 6220.35 -835.39 -797.82 286.17 847.59 160.27 2.36 BP MWD+IFR+MS 76 6957.53 56.26 355.05 95.07 6274.52 -757.56 -720.00 279.26 772.26 158.80 2.11 BP _MWD+IFR+MS 77 7053.61 57.62 354.87 96.08 6326.93 -677.33 -639.79 272.18 695.28 156.95 1.42 BP _MWD+IFR+MS 78 7149.08 57.17 354.60 95.47 6378.37 -597.18 -559.70 264.80 619.19 154.68 0.53 BP _MWD+IFR+MS 79 7244.45 57.52 355.25 95.37 6429.83 -517.19 -479.72 257.70 544.56 151.76 0.68 BP _MWD+IFR+MS 80 7340.56 57.90 356.03 96.11 6481.18 -436.33 -398.71 251.53 471.42 147.75 0.79 BP MWD+IFR+MS 81 7435.46 58.12 355.99 94.90 6531.45 -356.29 -318.42 245.93 402.33 142.32 0.23 BP _MWD+IFR+MS • 82 7531.48 57.69 355.90 96.02 6582.47 -275.38 -237.28 240.17 337.62 134.65 0.45 BP _MWD+IFR+MS 83 7626.54 57.82 356.94 95.06 6633.19 -195.49 -157.04 235.15 282.77 123.74 0.94 BP _MWD+IFR+MS 84 7713.00 57.59 358.03 86.46 6679.38 -123.03 -84.03 231.95 246.70 109.91 1.10 BP _BLIND 85 7726.00 59.48 357.01 13.00 6686.17 -112.03 -72.95 231.47 242.69 107.49 16.00 BP BLIND 86 7750.70 58.81 357.99 24.70 6698.84 -91.01 -51.76 230.54 236.28 102.66 4.35 BP _INC+TREND 87 7779.91 66.45 359.05 29.21 6712.26 -65.38 -25.85 229.88 231.33 96.42 26.35 BP _INC+TREND 88 7810.01 73.99 0.07 30.10 6722.43 -37.47 2.45 229.67 229.68 89.39 25.25 BP _INC+TREND 89 7840.59 82.00 1.04 30.58 6728.79 -8.09 32.33 229.96 232.22 82.00 26.38 BP _INC+TREND 90 7873.13 91.69 2.06 32.54 6730.58 23.70 64.77 230.84 239.76 74.33 29.94 BP INC+TREND SCHLUMBERGER Survey Report 14- Feb-2008 15:01:51 Page 5 of 10 Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - (ft) (deg) (deg) (ft) (ft) (ft) (ft) (ft) (ft) (deg) 100f) type (deg) 91 7903.44 97.41 3.01 30.31 6728.18 53.19 94.95 232.18 250.84 67.76 19.13 BP _MWD+IFR+MS 92 7934.64 94.42 0.88 31.20 6724.96 83.54 125.96 233.23 265.07 61.63 11.74 BP _MWD+IFR+MS 93 7965.75 92.99 358.15 31.11 6722.95 114.16 157.00 232.96 280.93 56.02 9.89 BP _MWD+IFR+MS 94 7995.00 97.15 356.81 29.25 6720.36 143.04 186.10 231.68 297.17 51.23 14.94 BP _MWD+IFR+MS 95 8026.31 97.43 358.58 31.31 6716.39 173.81 217.13 230.43 316.61 46.70 5.68 BP _MWD+IFR+MS 96 8056.92 95.72 357.68 30.61 6712.89 203.92 247.52 229.44 337.50 42.83 6.30 BP _MWD+IFR+MS 97 8086.38 95.40 353.44 29.46 6710.03 233.09 276.75 227.17 358.04 39.38 14.37 BP _MWD+IFR+MS • 98 8107.65 92.84 346.91 21.27 6708.50 254.29 297.64 223.55 372.24 36.91 32.90 BP _MWD+IFR+MS 99 8139.48 93.01 346.15 31.83 6706.88 286.02 328.55 216.15 393.27 33.34 2.44 BP _MWD+IFR+MS 100 8169.00 92.80 346.00 29.52 6705.38 315.44 357.17 209.05 413.85 30.34 0.87 BP_MWD+IFR+MS 101 8199.91 92.94 345.37 30.91 6703.83 346.22 387.08 201.42 436.35 27.49 2.09 BP _MWD+IFR+MS 102 8230.61 93.35 345.72 30.70 6702.15 376.78 416.76 193.77 459.60 24.94 1.75 BP _MWD+IFR+MS 103 8260.88 93.36 345.35 30.27 6700.38 406.91 446.02 186.22 483.34 22.66 1.22 BP _MWD+IFR+MS 104 8291.28 92.06 345.65 30.40 6698.94 437.18 475.42 178.62 507.87 20.59 4.39 BP _MWD+IFR+MS 105 8321.87 89.32 341.94 30.59 6698.57 467.58 504.78 170.08 532.67 18.62 15.08 BP _MWD+IFR+MS 106 8352.38 89.40 341.72 30.51 6698.91 497.78 533.77 160.57 557.40 16.74 0.77 BP _MWD+IFR+MS 107 8382.69 89.54 341.72 30.31 6699.19 527.77 562.55 151.06 582.48 15.03 0.46 BP _MWD+IFR+MS 108 8414.91 90.40 340.98 32.22 6699.21 559.62 593.08 140.76 609.55 13.35 3.52 BP _MWD+IFR+MS 109 8445.44 90.73 341.81 30.53 6698.91 589.81 622.01 131.02 635.66 11.89 2.93 BP _MWD+IFR+MS 110 8478.33 90.86 342.81 32.89 6698.45 622.40 653.34 121.03 664.46 10.49 3.07 BP _MWD+IFR+MS 111 8510.21 90.95 342.89 31.88 6697.95 654.03 683.80 111.63 692.85 9.27 0.38 BP MWD+IFR+MS 112 8542.08 90.16 344.01 31.87 6697.64 685.69 714.35 102.55 721.67 8.17 4.30 BP = MWD+IFR+MS 113 8574.32 88.82 344.22 32.24 6697.93 717.76 745.35 93.73 751.22 7.17 4.21 BP _MWD+IFR+MS 114 8605.73 88.58 345.75 31.41 6698.64 749.04 775.68 85.59 780.39 6.30 4.93 BP _MWD+IFR+MS 115 8641.12 87.04 344.73 35.39 6699.99 784.28 809.88 76.58 813.49 5.40 5.22 BP _MWD+IFR+MS 116 8670.00 87.80 345.74 28.88 6701.29 813.03 837.78 69.23 840.63 4.72 4.37 BP _MWD+IFR+MS 117 8701.99 87.69 344.25 31.99 6702.55 844.87 868.65 60.95 870.79 4.01 4.67 BP _MWD+IFR+MS 118 8733.84 88.24 344.93 31.85 6703.68 876.56 899.34 52.50 900.87 3.34 2.74 BP _MWD+IFR+MS 119 8764.84 88.82 345.34 31.00 6704.48 907.44 929.29 44.55 930.36 2.74 2.29 BP _MWD+IFR+MS 120 8796.27 89.27 345.03 31.43 6705.00 938.75 959.67 36.51 960.36 2.18 1.74 BP _MWD+IFR+MS SCHLUMBERGER Survey Report 14- Feb-2008 15:01:51 Page 6 of 10 Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - (ft) (deg) (deg) (ft) (ft) (ft) (ft) (ft) (ft) (deg) 100f) type (deg) 121 8828.93 87.28 344.08 32.66 6705.98 971.25 991.13 27.82 991.52 1.61 6.75 BP _MWD+IFR+MS 122 8862.08 87.08 342.51 33.15 6707.61 1004.13 1022.85 18.30 1023.01 1.02 4.77 BP _MWD+IFR+MS 123 8892.42 88.69 341.91 30.34 6708.73 1034.17 1051.71 9.04 1051.75 0.49 5.66 BP _MWD+IFR+MS 124 8923.33 90.50 341.77 30.91 6708.95 1064.76 1081.08 -0.60 1081.08 359.97 5.87 BP _MWD+IFR+MS 125 8955.11 90.30 341.74 31.78 6708.73 1096.21 1111.26 -10.55 1111.31 359.46 0.64 BP MWD+IFR+MS 126 8986.88 90.16 342.55 31.77 6708.60 1127.68 1141.50 -20.29 1141.68 358.98 2.59 BP _MWD+IFR+MS 127 9018.18 90.17 343.23 31.30 6708.51 1158.74 1171.42 -29.50 1171.79 358.56 2.17 BP _MWD+IFR+MS • 128 9051.07 86.47 339.72 32.89 6709.48 1191.25 1202.58 -39.94 1203.24 358.10 15.50 BP _MWD+IFR+MS 129 9082.26 87.88 338.83 31.19 6711.01 1221.85 1231.72 -50.96 1232.77 357.63 5.34 BP _MWD+IFR+MS 130 9114.01 88.53 337.88 31.75 6712.01 1252.93 1261.21 -62.67 1262.77 357.16 3.62 BP MWD+IFR+MS 131 9144.31 89.28 338.57 30.30 6712.59 1282.59 1289.34 -73.90 1291.46 356.72 3.36 BP MWD+IFR+MS 132 9175.86 88.91 339.05 31.55 6713.09 1313.54 1318.76 -85.31 1321.51 356.30 1.92 BP _MWD+IFR+MS 133 9207.75 88.70 339.11 31.89 6713.75 1344.84 1348.54 -96.69 1352.00 355.90 0.68 BP _MWD+IFR+MS 134 9239.79 88.97 338.79 32.04 6714.40 1376.28 1378.43 -108.20 1382.67 355.51 1.31 BP _MWD+IFR+MS 135 9271.96 89.76 338.71 32.17 6714.76 1407.83 1408.41 -119.86 1413.51 355.14 2.47 BP MWD+IFR+MS 136 9303.30 89.87 338.39 31.34 6714.86 1438.55 1437.58 -131.32 1443.57 354.78 1.08 BP _MWD+IFR+MS 137 9336.63 89.83 338.08 33.33 6714.95 1471.18 1468.54 -143.67 1475.55 354.41 0.94 BP _MWD+IFR+MS 138 9367.00 89.80 337.87 30.37 6715.05 1500.88 1496.69 -155.06 1504.70 354.09 0.70 BP _MWD+IFR+MS 139 9397.55 90.69 338.36 30.55 6714.92 1530.77 1525.04 -166.45 1534.10 353.77 3.33 BP _MWD+IFR+MS 140 9429.58 91.61 339.54 32.03 6714.27 1562.20 1554.92 -177.95 1565.07 353.47 4.67 BP MWD+IFR+MS 141 9460.83 91.27 339.88 31.25 6713.49 1592.94 1584.23 -188.79 1595.43 353.20 1.54 BP _MWD+IFR+MS • 142 9492.49 89.49 338.26 31.66 6713.28 1624.02 1613.79 -200.09 1626.15 352.93 7.60 BP _MWD+IFR+MS 143 9524.23 89.52 337.08 31.74 6713.55 1655.03 1643.15 -212.15 1656.79 352.64 3.72 BP _MWD+IFR+MS 144 9556.18 89.87 336.94 31.95 6713.72 1686.16 1672.56 -224.63 1687.58 352.35 1.18 BP _MWD+IFR+MS 145 9588.03 88.32 336.89 31.85 6714.22 1717.18 1701.86 -237.12 1718.30 352.07 4.87 BP MWD+IFR+MS 146 9620.38 87.12 337.16 32.35 6715.51 1748.68 1731.62 -249.73 1749.53 351.79 3.80 BP _MWD+IFR+MS 147 9651.39 87.29 336.15 31.01 6717.02 1778.81 1760.06 -262.01 1779.45 351.53 3.30 BP _MWD+IFR+MS 148 9683.11 89.18 336.99 31.72 6718.00 1809.65 1789.15 -274.61 1810.10 351.27 6.52 BP _MWD+IFR+MS 149 9715.40 90.93 339.04 32.29 6717.97 1841.23 1819.08 -286.70 1841.54 351.04 8.35 BP _MWD+IFR+MS 150 9746.67 90.79 341.33 31.27 6717.50 1872.04 1848.50 -297.30 1872.25 350.86 7.34 BP MWD+IFR+MS SCHLUMBERGER Survey Report 14 -Feb-2008 15:01:51 Page 7 of 10 --- Seq -------- Measured ------ Incl ------- Azimuth ------ Course -------- TVD -------- Vertical -------- Displ -------- Displ ------- Total -------- At ----- DLS ----- ------ Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - (ft) (deg) (deg) (ft) (ft) (ft) (ft) (ft) (ft) (deg) 100f) type (deg) 151 9777.98 89.04 341.59 31.31 6717.55 1903.00 1878.18 -307.26 1903.15 350.71 5.65 BP _MWD+IFR+MS 152 9809.94 87.84 340.94 31.96 6718.42 1934.58 1908.44 -317.52 1934.67 350.55 4.27 BP _MWD+IFR+MS 153 9841.62 87.36 342.10 31.68 6719.74 1965.88 1938.46 -327.55 1965.93 350.41 3.96 BP _MWD+IFR+MS 154 9873.49 87.43 341.34 31.87 6721.19 1997.39 1968.69 -337.53 1997.41 350.27 2.39 BP _MWD+IFR+MS 155 9906.00 86.74 341.74 32.51 6722.85 2029.50 1999.48 -347.82 2029.51 350.13 2.45 BP _MWD+IFR+MS 156 9937.81 86.98 340.94 31.81 6724.59 2060.90 2029.57 -357.98 2060.90 350.00 2.62 BP _MWD+IFR+MS 157 9969.35 88.67 340.42 31.54 6725.79 2092.00 2059.32 -368.40 2092.01 349.86 5.61 BP _MWD+IFR+MS • 158 10001.69 89.25 343.34 32.34 6726.37 2124.01 2090.04 -378.46 2124.03 349.74 9.20 BP _MWD+IFR+MS 159 10033.22 88.90 341.60 31.53 6726.88 2155.26 2120.10 -387.96 2155.31 349.63 5.63 BP _MWD+IFR+MS 160 10064.76 90.35 342.25 31.54 6727.09 2186.49 2150.09 -397.74 2186.57 349.52 5.04 BP _MWD+IFR+MS 161 10097.23 90.35 342.73. 32.47 6726.89 2218.68 2181.05 -407.51 2218.80 349.42 1.48 BP _MWD+IFR+MS 162 10129.40 90.28 342.03 32.17 6726.71 2250.57 2211.71 -417.25 2250.73 349.32 2.19 BP _MWD+IFR+MS 163 10160.60 90.24 342.57 31.20 6726.57 2281.48 2241.43 -426.73 2281.69 349.22 1.74 BP _MWD+IFR+MS 164 10193.65 90.31 342.70 33.05 6726.41 2314.26 2272.98 -436.60 2314.53 349.13 0.45 BP _MWD+IFR+MS 165 10224.67 90.31 342.80 31.02 6726.24 2345..03 2302.60 -445.80 2345.36 349.04 0.32 BP _MWD+IFR+MS 166 10257.27 90.45 343.23 32.60 6726.03 2377.39. 2333.78 -455.32 2377.78 348.96 1.39. BP _MWD+IFR+MS 167 10289.79 90.72 343.05 32.52 6725.70 2409.67 2364.90 -464.75 2410.13 348.88 1.00 BP _MWD+IFR+MS 168 10319.95 90.96 343.79 30.16 6725.25 2439.63 2393.80 -473.36 2440.15 348.81 2.58 BP _MWD+IFR+MS 169 10352.35 91.41 344.59 32.40 6724.58 2471.86 2424.97 -482.18 2472.44 348.75 2.83 BP _MWD+IFR+MS 170 10384.16 91.44 344.45 31.81 6723.79 2503.51 2455.62 -490.67 2504.16 348.70 0.45 BP _MWD+IFR+M5 171 10415.69 91.31 344.47 31.53 6723.04 2534.89 2485.99 -499.11 2535.59 348.65 0.42 BP _MWD+IFR+MS 172 10446.21 91.27 345.11 30.52 6722.35 2565.27 2515.43 -507.12 2566.04 348.60 2.10 BP • _MWD+IFR+MS 173 10477.42 89.21 343.87 31.21 6722.22 2596.34 2545.50 -515.46 2597.17 348.55 7.70 BP _MWD+IFR+MS 174 10509.85 90.04 342.43 32.43 6722.43 2628.53 2576.53 -524.86 2629.45 348.49 5.13 BP _MWD+IFR+MS 175 10539.57 91.31 342.63 29.72 6722.08 2658.00 2604.88 -533.78 2659.01 348.42 4.33 BP MWD+IFR+MS 176 10569.91 91.48 343.64 30.34 6721.34 2688.11 2633.91 -542.58 2689.21 348.36 3.37 BP _MWD+IFR+MS 177 10601.00 90.48 344.61 31.09 6720.81 2719.03 2663.81 -551.09 2720.21 348.31 4.48 BP _MWD+IFR+MS 178 10632.77 89.39 343.44 31.77 6720.85 2750.63 2694.35 -559.83 2751.89 348.26 5.03 BP _MWD+IFR+MS 179 10663.41 90.35 343.23 30.64 6720.92 2781.06 2723.70 -568.62 2782.42 348.21 3.21 BP _MWD+IFR+MS 180 10696.05 90.96 343.76 32.64 6720.54 2813.49 2754.99 -577.89 2814.95 348.15 2.48 BP MWD+IFR+MS SCHLUMBERGER Survey Report 14-Feb-2008 15:01:51 Page 8 of 10 --- Seq -------- Measured ------ Incl ------- Azimuth ------ Course -------- TVD -------- Vertical -------- Displ -------- Displ ------- Total -------- At ----- DLS ----- ------ Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - (ft) (deg) (deg) (ft) (ft) (ft) (ft) (ft) (ft) (deg) 100f) type (deg) 181 10727.97 88.22 343.73 31.92 6720.77 2845.21 2785.63 -586.82 2846.77 348.10 8.58 BP_MWD+IFR+MS 182 10757.27 89.15 342.86 29.30 6721.44 2874.31 2813.69 -595.24 2875.96 348.06 4.35 BP_MWD+IFR+MS 183 10788.67 90.96 343.83 31.40 6721.41 2905.49 2843.77 -604.24 2907.26 348.00 6.54 BP_MWD+IFR+MS 184 10820.63 91.10 345.09 31.96 6720.84 2937.30 2874.56 -612.80 2939.15 347.97 3.97 BP_MWD+IFR+MS 185 10850.53 91.20 344.26 29.90 6720.24 2967.06 2903.39 -620.70 2969.00 347.93 2.80 BP MWD+IFR+MS 186 10883.23 187 10897.05 188 10915.34 189 10947.70 190 10979.06 191 11010.00 192 11040.65 193 11072.27 194 11104.53 195 11135.92 196 11168.00 197 11199.42 198 11231.02 199 11263.62 200 11294.29 201 11326.92 202 11358.84 203 11389.31 204 11422.66 205 11454.43 206 11485.32 207 11517.70 208 11549.76 209 11580.34 210 11612.64 90.65 344.91 32.70 6719.71 2999.61 2934.91 -629.39 3001.64 347.90 2.60 BP MWD+IFR+MS 88.08 344.20 13.82 6719.86 3013.37 2948.23 -633.07 3015.43 347.88 19.29 BP = MWD+IFR+MS 85.65 347.98 18.29 6720.86 3031.58 2965.95 -637.46 3033.68 347.87 24.54 BP _MWD+IFR+MS 83.68 346.81 32.36 6723.87 3063.77 2997.39 -644.49 3065.90 347.87 7.07 BP _MWD+IFR+MS 85.13 346.56 31.36 6726.93 3094.93 3027.76 -651.68 3097.10 347.85 4.69 BP _MWD+IFR+MS 87.19 347.59 30.94 6729.00 3125.75 3057.85 -658.59 3127.96 347.85 7.44 BP _MWD+IFR+MS 88.46 347.24 30.65 6730.17 3156.35 3087.74 -665.26 3158.59 347.84 4.30 BP _MWD+IFR+MS 90.11 347.07 31.62 6730.56 3187.93 3118.56 -672.29 3190.21 347.83 5.25 BP _MWD+IFR+MS 91.72 347.13 32.26 6730.04 3220.14 3150.00 -679.49 3222.46 347.83 4.99 BP _MWD+IFR+MS 91.96 345.04 31.39 6729.04 3251.44 3180.46 -687.03 3253.82 347.81 6.70 BP _MWD+IFR+MS 92.06 343.31 32.08 6727.91 3283.33 3211.30 -695.78 3285.81 347.78 5.40 BP _MWD+IFR+MS 93.57 343.52 31.42 6726.37 3314.51 3241.38 -704.73 3317.10 ,347.73 4.85 BP _MWD+IFR+MS 95.36 342.68 31.60 6723.91 3345.78 3271.52 -713.89 3348.50 347.69 6.25 BP _MWD+IFR+MS 90.98 343.46 32.60 6722.11 3378.09 3302.65 -723.37 3380.94 347.65 13.65 BP _MWD+IFR+MS 89.68 343.75 30.67 6721.93 3408.56 3332.07 -732.02 3411.53 347.61 4.34 BP MWD+IFR+MS 89.56 345.47 32.63 6722.15 3441.05 3363.53 -740.68 3444.12 347.58 5.28 BP_ MWD+IFR+MS • 89.32 348.16 31.92 6722.46 3472.91 3394.60 -747.96 3476.03 347.57 8.46 BP_ MWD+IFR+MS 90.01 352.09 30.47 6722.64 3503.38 3424.62 -753.19 3506.46 347.60 13.09 BP _MWD+IFR+MS 90.42 352.90 33.35 6722.51 3536.70 3457.68 -757.54 3539.69 347.64 2.72 BP _MWD+IFR+MS 90.21 352.27 31.77 6722.34 3568.43 3489.18 -761.64 3571.34 347.69 2.09 BP _MWD+IFR+MS 90.31 352.36 30.89 6722.20 3599.30 3519.80 -765.77 3602.13 347.73 0.44 BP _MWD+IFR+MS 90.46 352.63 32.38 6721.98 3631.65 3551.90 -770.00 3634.40 347.77 0.95 BP _MWD+IFR+MS 90.39 352.73 32.06 6721.74 3663.67 3583.69 -774.09 3666.34 347.81 0.38 BP _MWD+IFR+MS 90.39 353.44 30.58 6721.53 3694.20 3614.05 -777.77 3696.79 347.85 2.32 BP _MWD+IFR+MS 90.66 353.70 32.30 6721.24 3726.44 3646.15 -781.39 3728.93 347.90 1.16 BP _MWD+IFR+MS SCHLiTMBERGER Survey Report 14 -Feb-2008 15:01:51 Page 9 of 10 Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - (ft) (deg) (deg) (ft) (ft) (ft) (ft) (ft) (ft) (deg) 100f) type (deg) 211 11645.87 90.16 353.09 33.23 6721.00 3759.61 3679.16 -785.21 3762.01 347.95 2.37 BP _MWD+IFR+MS 212 11676.09 90.06 352.63 30.22 6720.94 3789.79 3709.14 -788.96 3792.12 347.99 1.56 BP _MWD+IFR+MS 213 11709.23 90.32 353.06 33.14 6720.83 3822.89 3742.02 -793.09 3825.14 348.03 1.52 BP _MWD+IFR+MS 214 11741.45 90.00 353.21 32.22 6720.74 3855.06 3774.01 -796.94 3857.24 348.08 1.10 BP _MWD+IFR+MS 215 11776.21 89.87 352.78 34.76 6720.78 3889.78 3808.51 -801.18 3891.87 348.12 1.29 BP _MWD+IFR+MS 216 11804.06 89.97 353.99 27.85 6720.82 3917.58 3836.18 -804.39 3919.60 348.16 4.36 BP _MWD+IFR+MS 217 11837.18 89.65 353.60 33.12 6720.93 3950.62 3869.10 -807.97 3952.56 348.20 1.52 BP _MWD+IFR+MS • 218 11869.29 89.77 353.77 32.11 6721.09 3982.67 3901.02 -811.50 3984.53 348.25 0.65 BP _MWD+IFR+MS 219 11901.28 90.73 354.38 31.99 6720.95 4014.58 3932.83 -814.80 4016.35 348.30 3.56 BP _MWD+IFR+MS 220 11933.32 90.77 354.55 32.04 6720.53 4046.52 3964.72 -817.89 4048.21 348.34 0.54 BP_ MWD+IFR+MS 221 11965.00 90.97 354.60 31.68 6720.05 4078.09 3996.26 -820.89 4079.70 348.39 0.65 BP _MWD+IFR+MS 222 11996.51 90.80 354.29 31.51 6719.57 4109.50 4027.61 -823.94 4111.03 348.44 1.12 BP _MWD+IFR+MS 223 12028.22 89.87 354.82 31.71 6719.38 4141.11 4059.18 -826.95 4142.56 348.49 3.38 BP _MWD+IFR+MS 224 12059.92 87.50 353.69 31.70 6720.11 4172.71 4090.71 -830.12 4174.09 348.53 8.28 BP _MWD+IFR+MS 225 12092.45 88.05 354.64 32.53 6721.37 4205.13 4123.05 -833.42 4206.44 348.57 3.37 BP MWD+IFR+MS 226 12124.24 86.94 354.82 31.79 6722.76 4236.78 4154.67 -836.34 4238.01 348.62 3.54 BP _MWD+IFR+MS 227 12156.33 86.95 354.76 32.09 6724.47 4268.71 4186.58 -839.25 4269.87 348.66 0.19 BP _MWD+IFR+MS 228 12187.44 86.83 353.99 31.11 6726.16 4299.69 4217.50 -842.30 4300.79 348.71 2.50 BP_ MWD+IFR+MS 229 12219.91 87.88 354.10 32.47 6727.66 4332.04 4249.76 -845.66 4333.08 348.75 3.25 BP _MWD+IFR+MS 230 12250.95 89.73 354.79 31.04 6728.30 4362.98 4280.64 -848.66 4363.96 348.79 6.36 BP _MWD+IFR+MS 231 12283.69 89.81 354.91 32.74 6728.44 4395.60 4313.25 -851.60 4396.52 348.83 0.44 BP _MWD+IFR+MS 232 12315.58 89.73 354.46 31.89 6728.56 4427.39 4345.00 -854.56 4428.24 348.87 1.43 BP • _MWD+IFR+MS 233 12346.66 89.47 354.31 31.08 6728.78 4458.38 4375.94 -857.60 4459.18 348.91 0.97 BP _MWD+IFR+MS 234 12378.18 90.66 353.86 31.52 6728.75 4489.81 4407.29 -860.85 4490.57 348.95 4.04 BP _MWD+IFR+MS 235 12410.58 90.53 353.66 32.40 6728.41 4522.14 4439.49 -864.37 4522.86 348.98 0.74 BP MWD+IFR+MS 236 12442.15 90.39 354.38 31.57 6728.16 4553.63 4470.89 -867.66 4554.30 349.02 2.32 BP MWD+IFR+MS ~ 237 12473.99 90.22 354.08 31.84 6727.99 4585.39 4502.57 -870.86 4586.01 349.05 1.08 BP MWD+IFR+MS 238 12506.70 89.98 352.26 32.71 6727.93 4618.05 4535.04 -874.75 4618.64 349.08 5.61 BP _MWD+IFR+MS 239 12538.50 89.91 352.99 31.80 6727.96 4649.81 4566.58 -878.83 4650.38 349.11 2.31 BP _MWD+IFR+MS 240 12569.38 89.87 353.76 30.88 6728.02 4680.64 4597.25 -882.39 4681.17 349.13 2.50 BP MWD+IFR+MS SCHLUMBERGER Survey Report 14-Feb-2008 15:01:51 Page 10 of 10 Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - (ft) (deg) (deg) (ft) (ft) (ft) (ft) (ft) (ft) (deg) 100f) type (deg) 241 12600.98 89.54 353.27 31.60 6728.18 4712.18 4628.65 -885.96 4712.68 349.16 1.87 BP_MWD+IFR+MS 242 12633.64 89.76 354.27 32.66 6728.38 4744.77 4661.12 -889.50 4745.23 349.20 3.14 BP_MWD+IFR+MS 243 12665.32 90.04 355.26 31.68 6728.44 4776.34 4692.67 -892.40 4776.77 349.23 3.25 BP_MWD+IFR+MS 244 12696.98 89.93 351.95 31.66 6728.44 4807.93 4724.13 -895.92 4808.33 349.26 10.46 BP_MWD+IFR+MS 245 12727.08 91.24 350.36 30.10 6728.14 4838.02 4753.86 -900.55 4838.41 349.27 6.84 BP MWD+IFR+MS 246 12761.10 247 12793.22 248 12823.58 249 12857.13 250 12888.52 251 12919.91 252 13016.14 253 13081.11 254 13112.42 255 13143.43 256 13176.32 257 13208.08 258 13240.27 259 13271.36 260 13303.67 261 13335.48 262 13367.05 263 13399.48 264 13431.54 265 13463.67 266 13494.74 267 13526.22 268 13555.26 269 13600.00 91.86 349.02 34.02 6727.22 4872.03 4787.32 -906.64 4872.41 349.28 4.34 BP_ MWD+IFR+MS 91.35 348.36 32.12 6726.32 4904.12 4818.80 -912.93 4904.52 349.27 2.60 BP_ MWD+IFR+MS • 91.66 349.63 30.36 6725.52 4934.47 4848.60 -918.73 4934.87 349.27 4.30 BP_ MWD+IFR+MS 91.21 349.28 33.55 6724.68 4968.01 4881.57 -924.86 4968.41 349.27 1.70 BP_ MWD+IFR+MS 91.38 349.39 31.39 6723.97 4999.39 4912.41 -930.67 4999.79 349.27 0.65 BP MWD+IFR+MS 91.44 349.80 31.39 6723.20 5030.77 4943.27 -936.34 5031.17 349.27 1.32 BP_ MWD+IFR+MS 91.66 350.04 96.23 6720.59 5126.96 5037.98 -953.17 5127.36 349.29 0.34 BP_ MWD+IFR+MS 91.65 349.93 64.97 6718.72 5191.90 5101.94 -964.47 5192.30 349.30 0.17 BP_ MWD+IFR+MS 92.03 349.32 31.31 6717.71 5223.20 5132.72 -970.10 5223.59 349.30 2.29 BP_ MWD+IFR+MS 90.58 349.68 31.01 6717.01 5254.20 5163.20 -975.75 5254.59 349.30 4.82 BP MWD+IFR+MS 92.07 350.98 32.89 6716.25 5287.08 5195.61 -981.28 5287.47 349.30 6.01 BP_ MWD+IFR+MS 92.10 346.35 31.76 6715.09 5318.80 5226.72 -987.51 5319.19 349.30 14.57 BP_ MWD+IFR+MS 91.24 351.24 32.19 6714.15 5350.96 5258.28 -993.76 5351.36 349.30 15.42 BP_ MWD+IFR+MS 88.08 348.51 31.09 6714.34 5382.04 5288.88 -999.23 5382.44 349.30 13.43 BP_ MWD+IFR+MS 91.65 349.03 32.31 6714.41 5414.34 5320.56 -1005.52 5414.74 349.30 11.17 BP_ MWD+IFR+MS 92.86 350.29 31.81 6713.16 5446.12 5351.83 -1011.22 5446.53 349.30 5.49 BP_ MWD+IFR+MS 92.54 349.04 31.57 6711.67 5477.65 5382.85 -1016.88 5478.06 349.30 4.08 BP_ MWD+IFR+MS 92.31 349.30 32.43 6710.30 5510.05 5414.68 -1022.97 5510.46 349.30 1.07 BP_ MWD+IFR+MS 90.81 349.89 32.06 6709.43 5542.10 5446.20 -1028.76 5542.51 349.30 5.03 BP_ MWD+IFR+MS 90.97 349.30 32.13 6708.93 5574.22 5477.79 -1034.56 5574.63 349.30 1.90 BP_ MWD+IFR+MS 88.98 349.06 31.07 6708.94 5605.29 5508.31 -1040.39 5605.70 349.30 6.45 BP_ MWD+IFR+MS 90.93 349.92 31.48 6708.97 5636.77 5539.26 -1046.13 5637.18 349.31 6.77 BP_ MWD+IFR+MS 91.38 350.53 29.04 6708.38 5665.80 5567.87 -1051.06 5666.21 349.31 2.61 BP_ MWD+IFR+MS 91.38 350.53 44.74 6707.31 5710.52 5611.99 -1058.42 5710.93 349.32 0.00 Projected to TD [(c)2008 IDEAL ID12_OC_13] Z-112 (PTD#: 2071720) • Maunder, Thomas E (DOA) From: Peltier, Brandon [Brandon.Peltier@bp.com] Sent: Tuesday, February 19, 2008 12:20 PM To: Maunder, Thomas E (DOA) Cc: Tirpack, Robert B Subject: Z-112 (PTD#: 2071720) Tom Page 1 of 1 I wanted to inform you that we have been granted, by Chuck Scheve, an extension on our BOP test, which is due today (2/19/08). The extension was given becaue we are in the process of running our completion string and fully expect to have it landed in the early morning of 2/20. We agreed to contact Chuck if there was a subsantial delay in our time estimate. Please contact me or Rob if you have any questions or concerns. Brandon Pettier BP Exploration (Alaska), Inc. Operations Drilling Engineer GPB Rotary Drilling (907) 564-5912 (Direct) (907) 748-7838 (Mobile) Brandon. Peltier@bp. com 5/23/2008 ~ ~ Schlumber er g Drilling & Measurements MWD/LWD Log Product Delivery Customer BP Exploration Alaska) Inc Dispatched To: Christine Mahnken Well No Z-112 Date Dispatched: 15-Jan-08 Installation/Rig Nabors 9ES Dispatched By: Franklin Medina LWD Log Delivery V2.1, 03-06-06 Data No Of Prints No of Floppies Surveys 2 1 O Please sign and return to: Received By: Drilling & Measurements LWD Division Q t? 2525 Gambell Street, Suite 400 / ~ ('r ~ ~ U U (~ Anchorage, Alaska 99501 fclarke3C~slb.com Fax: 907-561-8317 ~U~-l7~ ~' ',~ '~.~ SCHLUMBERGER Survey report Client ...................: BP Exploration (Alaska) Inc. Field ....................: Borealis Well .....................: Z-112 PB1 API number ...............: 50-029-23380-70 Engineer .................: Franco/Wilson Rig: Nabors 9ES..........: Nabors 9ES STATE :...................: Alaska ----- Survey calculation methods------------- Method for positions.....: Minimum curvature Method for DLS...........: Mason & Taylor ----- Depth reference ---- Permanent datum..........: Depth reference..........: GL above permanent.......: KB above permanent.......: DF above permanent.......: Mean Sea Level Driller's Pipe Tally 54.10 ft N/A Top Drive 82.60 ft ----- Vertical section origin------- --- Latitude (+N/S-).........: 0.00 ft Departure (+E/W-)........: 0.00 ft ----- Platform reference point---- ---- Latitude (+N/S-).........: -999.25 ft Departure (+E/W-)........: -999.25 ft Azimuth from Vsect Origin to target: 0.00 degrees 29-Jan-2008 06:59:28 Page 1 of 4 Spud date ................: 19-Jan-08 Last survey date.........: 29-Jan-08 Total accepted surveys...: 88 MD of first survey.......: 0.00 ft MD of last survey........: 8050.00 ft ----- Geomagnetic data ---------------------- Magnetic model...........: BGGM version 2007 Magnetic date ............: 18-Jan-2008 Magnetic field strength..: 57643.35 GAMA Magnetic dec (+E/W-)...... 23.17 degrees Magnetic dip .............: 80.86 degrees ----- MWD survey Reference Reference G ............... Reference H ............... Reference Dip ............: Tolerance of G...........: Tolerance of H...........: Tolerance of Dip.........: Criteria --------- 1002.68 meal 57643.50 LAMA 80.86 degrees (+/-) 2.50 meal (+/-)300.00 LAMA (+/-) 0.45 degrees ----- Corrections --------------------- - Magnetic dec (+E/W-).....: 23.12 degrees Grid convergence (+E/W-).: 0.00 degrees Total az corr (+E/W-)....: 23.12 degrees (Total az corr = magnetic dec - grid conv) Survey Correction Type .... I=Sag Corrected Inclination M=Schlumberger Magnetic Correction S=Shell Magnetic Correction F=Failed Axis Correction R=Magnetic Resonance Tool Correction D=Dmag Magnetic Correction • • SCHLUMBERGER Survey Report 29 -Jan-2008 07:13:50 Page 2 of 4 Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - (ft) (deg) (deg) (ft) (ft) (ft) (ft) (ft) (ft) (deg) 100f) type (deg) 1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 TIP None 2 100.00 0.05 100.17 100.00 100.00 -0.01 -0.01 0.04 0.04 100.17 0.05 BP _GYD_ CT_DMS 3 200.00 0.22 66.19 100.00 200.00 0.06 0.06 0.26 0.27 76.64 0.18 BP _GYD_ CT_DMS 4 300.00 0.22 96.97 100.00 300.00 0.12 0.12 0.63 0.64 79.50 0.12 BP _GYD_ CT_DMS 5 400.00 0.19 142.06 100.00 400.00 -0.04 -0.04 0.92 0.92 92.35 0.16 BP _GYD_ CT_DMS • 6 500.00 1.19 180.78 100.00 499.99 -1.21 -1.21 1.01 1.57 140.13 1.05 BP _GYD_ CT_DMS 7 600.00 2.56 180.37 100.00 599.93 -4.48 -4.48 0.98 4.58 167.66 1.37 BP _GYD_ CT_DMS 8 700.00 4.52 182.05 100.00 699.74 -10.65 -10.65 0.82 10.68 175.58 1.96 BP _GYD CT DMS 9 800.00 6.38 178.83 100.00 799.28 -20.14 -20.14 0.80 20.16 177.74 1.88 BP _GYD_ CT_DMS 10 900.00 7.86 179.80 100.00 898.51 -32.54 -32.54 0.93 32.55 178.36 1.48 BP _GYD_ CT_DMS 11 1000.00 12.11 177.01 100.00 996.97 -49.86 -49.86 1.51 49.88 178.27 4.28 BP _GYD_ CT_DMS 12 1039.29 13.99 175.98 39.29 1035.25 -58.71 -58.71 2.05 58.75 178.00 4.82 BP _MWD IFR MS 13 1132.62 16.86 172.90 93.33 1125.21 -83.40 -83.40 4.52 83.52 176.90 3.20 BP _MWD_ IFR_MS 14 1227.25 18.18 172.23 94.63 1215.44 -111.65 -111.65 8.21 111.95 175.79 1.41 BP _MWD_ IFR_MS 15 1322.51 19.42 170.56 95.26 1305.62 -142.00 -142.00 12.82 142.57 174.84 1.42 BP _MWD_ IFR_MS 16 1413.28 20.97 168.86 90.77 1390.81 -172.82 -172.82 18.43 173.80 173.91 1.83 BP _MWD_ IFR_M5 17 1511.24 22.56 169.42 97.96 1481.78 -208.49 -208.49 25.27 210.02 173.09 1.64 BP _MWD_ IFR_MS 18 1607.00 23.37 168.91 95.76 1569.95 -245.19 -245.19 32.29 247.31 172.50 0.87 BP _MWD_ IFR_MS 19 1702.93 24.25 168.56 95.93 1657.72 -283.17 -283.17 39.86 285.96 171.99 0.93 BP _MWD_ IFR_MS 20 1798.88 24.79 166.29 95.95 1745.02 -322.02 -322.02 48.54 325.66 171.43 1.13 BP _MWD_ IFR_MS • 21 1894.94 25.17 166.49 96.06 1832.09 -361.45 -361.45 58.08 366.09 170.87 0.41 BP _MWD_ IFR_MS 22 1990.56 25.15 166.82 95.62 1918.64 -401.01 -401.01 67.47 406.64 170.45 0.15 BP _MWD_ IFR_MS 23 2086.73 24.83 166.48 96.17 2005.80 -440.54 -440.54 76.85 447.19 170.11 0.36 BP _MWD_ IFR_MS 24 2181.63 24.63 166.12 94.90 2092.00 -479.11 -479.11 86.25 486.81 169.80 0.26 BP _MWD_ IFR_MS 25 2277.30 26.57 165.40 95.67 2178.28 -519.17 -519.17 96.42 528.05 169.48 2.05 BP MWD IFR MS 26 2372.50 26.26 165.84 95.20 2263.54 -560.19 -560.19 106.94 570.31 169.19 0.39 BP _MWD_ IFR_MS 27 2468.35 25.86 165.66 95.85 2349.64 -601.01 -601.01 117.31 612.35 168.96 0.43 BP _MWD_ IFR_MS 28 2563.25 25.66 165.12 94.90 2435.11 -640.92 -640.92 127.71 653.52 168.73 0.32 BP _MWD_ IFR_MS 29 2658.78 25.47 167.49 95.53 2521.29 -680.96 -680.96 137.47 694.70 168.59 1.09 BP _MWD_ IFR_MS 30 2754.10 24.98 167.34 95.32 2607.52 -720.61 -720.61 146.32 735.31 168.52 0.52 BP _MWD_ IFR_MS SCHLUMBERGER Survey Report 29-Jan-2008 07:13:50 Page 3 of 4 --- Seq -------- Measured ------ Incl ------- Azimuth ------ Course -------- TVD -------- Vertical -------- Displ -------- Displ ------- Total -------- At ----- DLS - ---- Srvy ------ Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - --- (ft) -------- (deg) ------ (deg) ------- (ft) ------ (ft) -------- (ft) -------- (ft) -------- (ft) -------- (ft) ------- (deg) -------- 100f) ----- - type ---- (deg) ------ --- 31 -------- 2849.16 ------ 24.68 ------- 167.22 ------ 95.06 -------- 2693.79 -------- -759.55 -------- -759.55 -------- 155.11 ------- 775.22 -------- 168.46 ----- 0.32 - BP ---- _MWD_ --- IFR_ --- MS 32 2945.21 25.67 167.84 96.05 2780.72 -799.44 -799.44 163.93 816.07 168.41 1.07 BP _MWD_ IFR_ MS 33 3040.16 25.24 167.87 94.95 2866.45 -839.34 -839.34 172.52 856.88 168.39 0.45 BP _MWD_ IFR_ MS 34 3136.92 24.61 167.88 96.76 2954.20 -879.20 -879.20 181.08 897.66 168.36 0.65 BP _MWD_ IFR _MS 35 3180.65 24.79 167.89 43.73 2993.93 -897.07 -897.07 184.92 915.93 168.35 0.41 BP MWD IFR MS 36 3250.99 26.01 169.26 70.34 3057.47 -926.64 -926.64 190.88 946.10 168.36 1.93 BP _MWD_ IFR _MS 37 3346.94 31.21 172.05 95.95 3141.68 -971.97 -971.97 198.25 991.98 168.47 5.59 BP _MWD_ IFR _MS 38 3442.80 31.52 172.29 95.86 3223.53 -1021.40 -1021.40 205.04 1041.77 168.65 0.35 BP _MWD_ IFR_ MS 39 3538.51 30.73 174.03 95.71 3305.46 -1070.51 -1070.51 210.94 1091.10 168.85 1.25 BP _MWD_ IFR_ MS 40 3633.31 30.38 175.22 94.80 3387.10 -1118.49 -1118.49 215.46 1139.05 169.10 0.74 BP MWD IFR MS 41 3729.07 31.40 173.80 95.76 3469.27 -1167.42 -1167.42 220.17 1188.00 169.32 1.31 BP _MWD_ IFR_ MS 42 3825.55 30.49 167.34 96.48 3552.04 -1216.30 -1216.30 228.25 1237.54 169.37 3.57 BP _MWD_ IFR_ MS 43 3919.41 30.44 164.30 93.86 3632.95 -1262.43 -1262.43 239.91 1285.02 169.24 1.64 BP _MWD_ IFR _MS 44 4015.67 29.76 161.48 96.26 3716.23 -1308.56 -1308.56 254.10 1333.00 169.01 1.63 BP _MWD_ IFR_ MS 45 4109.84 29.18 160.66 94.17 3798.22 -1352.38 -1352.38 269.12 1378.90 168.75 0.75 BP MWD IFR MS 46 4205.18 28.81 161.19 95.34 3881.61 -1396.06 - 1396.06 284.23 1424.70 168.49 0.47 BP _MWD_ IFR_ MS 47 4298.72 28.91 163.51 93.54 3963.53 -1439.08 -1439.08 297.91 1469.59 168.30 1.20 BP _MWD_ IFR_ MS 48 4394.07 27.97 165.36 95.35 4047.38 -1482.81 -1482.81 310.11 1514.89 168.19 1.35 BP _MWD IFR MS 49 4489.61 23.90 166.96 95.54 4133.28 -1523.36 -1523.36 320.14 1556.64 168.13 4.32 BP _MWD_ IFR_ MS 50 4585.49 18.14 171.11 95.88 4222.75 -1557.06 -1557.06 326.83 1590.99 168.15 6.20 BP MWD IFR MS 51 4679.47 13.84 174.88 93.98 4313.07 -1582.72 -1582.72 330.10 1616.78 168.22 4.70 BP _MWD_ IFR _MS 52 4775.66 10.38 168.29 96.19 4407.11 -1602.67 -1602.67 332.89 1636.88 168.27 3.87 BP _MWD_ IFR _MS 53 4870.45 8.67 141.39 94.79 4500.64 -1616.62 - 1616.62 339.08 1651.80 168.15 4.97 BP _MWD_ IFR_ MS 54 4965.43 8.63 109.00 94.98 4594.59 -1624.54 - 1624.54 350.29 1661.88 167.83 5.06 BP _MWD_ IFR_ MS 55 4988.42 8.81 100.41 22.99 4617.32 -1625.42 - 1625.42 353.66 1663.45 167.73 5.71 BP _MWD_ IFR_ MS 56 5060.69 10.40 77.75 72.27 4688.60 -1625.04 - 1625.04 365.48 1665.63 167.32 5.63 BP _MWD_ IFR_ MS 57 5155.95 9.13 51.38 95.26 4782.52 -1618.49 - 1618.49 379.79 1662.46 166.79 4.83 BP _MWD_ IFR_ MS 58 5251.18 10.34 12.69 95.23 4876.48 -1605.43 -1605.43 387.58 1651.55 166.43 6.85 BP _MWD_ IFR _MS 59 5345.98 14.05 349.32 94.80 4969.18 -1585.80 -1585.80 387.32 1632.41 166.27 6.44 BP _MWD_ IFR _MS 60 5443.25 17.35 343.55 97.27 5062.82 -1560.28 -1560.28 381.02 1606.13 166.28 3.75 BP _MWD_ IFR _MS CJ • J SCHLUMBERGER Survey Report 29-Jan-2008 07:13:50 Page 4 of 4 --- --- Seq -------- -------- Measured ------ ------ Incl ------- ------- Azimuth ------ ------ Course ------- ------- TVD - -------- - -------- Vertical -------- -------- Displ -------- -------- Displ -------- -------- Total ------- ------- At ----- ----- DLS - - ---- ---- Srvy ------ ------ Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - --- (ft) -------- (deg) ------ (deg) ------- (ft) ------ (ft) ------- (ft) - -------- (ft) -------- (ft) -------- (ft) -------- (deg) ------- 100f) ----- - type ---- (deg) ------ 61 5539.23 16.45 346.83 95.98 5154.65 -1533.32 - 1533.32 373.87 1578.24 166.30 1.37 BP _MWD_ IFR_ MS 62 5632.67 17.94 350.43 93.44 5243.91 -1506.25 - 1506.25 368.46 1550.66 166.25 1.96 BP _MWD_ IFR_ MS 63 5724.35 22.17 353.90 91.68 5330.01 -1475.11 - 1475.11 364.28 1519.42 166.13 4.79 BP _MWD_ IFR_ MS 64 5818.24 24.50 352.36 93.89 5416.22 -1438.19 - 1438.19 359.81 1482.52 165.95 2.57 BP _MWD_ IFR_ MS 65 5912.68 26.34 351.33 94.44 5501.51 -1398.07 - 1398.07 354.04 1442.20 165.79 2.00 BP MWD IFR MS _ _ _ • 66 6005.96 28.21 350.13 93.28 5584.42 -1355.89 - 1355.89 347.14 1399.62 165.64 2.09 BP _MWD_ IFR_ MS 67 6101.82 31.01 350.89 95.86 5667.75 -1309.17 - 1309.17 339.35 1352.44 165.47 2.95 BP _MWD_ IFR_ MS 68 6194.56 33.56 351.98 92.74 5746.15 -1260.19 - 1260.19 331.99 1303.19 165.24 2.82 BP _MWD_ IFR_ MS 69 6289.62 36.32 352.94 95.06 5824.07 -1206.23 - 1206.23 324.86 1249.21 164.93 2.96 BP _MWD_ IFR_ MS 70 6386.12 39.83 355.19 96.50 5900.02 -1147.05 - 1147.05 318.76 1190.51 164.47 3.91 BP _MWD_ IFR_ MS 71 6479.47 42.92 354.14 93.35 5970.07 -1085.62 - 1085.62 313.00 1129.84 163.92 3.39 BP _MWD_ IFR_ MS 72 6575.41 46.29 354.46 95.94 6038.36 -1018.60 - 1018.60 306.32 1063.66 163.26 3.52 BP _MWD_ IFR_ MS 73 6670.43 49.54 355.04 95.02 6102.04 -948.38 -948.38 299.87 994.66 162.45 3.45 BP _MWD_ IFR_ MS 74 6767.07 52.02 354.69 96.64 6163.14 -873.82 -873.82 293.17 921.69 161.45 2.58 BP _MWD_ IFR_ MS 75 6862.46 54.27 354.79 95.39 6220.35 -797.82 -797.82 286.17 847.59 160.27 2.36 BP _MWD_ IFR_ MS 76 6957.53 56.26 355.05 95.07 6274.52 -720.00 -720.00 279.26 772.26 158.80 2.11 BP _MWD IFR MS 77 7053.61 57.62 354.87 96.08 6326.93 -639.79 -639.79 272.18 695.28 156.95 1.42 BP _MWD_ IFR_ MS 78 7149.08 57.17 354.60 95.47 6378.37 -559.70 -559.70 264.80 619.19 154.68 0.53 BP _MWD_ IFR_ MS 79 7244.45 57.52 355.25 95.37 6429.83 -479.72 -479.72 257.70 544.56 151.76 0.68 BP _MWD_ IFR_ MS 80 7340.56 57.90 356.03 96.11 6481.18 -398.71 -398.71 251.53 471.42 147.75 0.79 BP _MWD_ IFR_ MS • 81 7435.46 58.12 355.99 94.90 6531.45 -318.42 -318.42 245.93 402.33 142.32 0.23 BP _MWD_ IFR_ MS 82 7531.48 57.69 355.90 96.02 6582.47 -237.28 -237.28 240.17 337.62 134.65 0.45 BP _MWD_ IFR_ MS 83 7626.54 57.82 356.94 95.06 6633.19 -157.04 -157.04 235.15 282.77 123.74 0.94 BP _MWD_ IFR_ MS 84 7722.08 57.57 358.14 95.54 6684.25 -76.36 -76.36 231.69 243.95 108.24 1.09 BP _MWD_ IFR_ MS 85 7817.60 56.07 357.89 95.52 6736.52 3.53 3.53 228.92 228.95 89.12 1.59 BP _MWD_ IFR_ MS 86 7912.89 53.61 356.93 95.29 6791.39 81.35 81.35 225.41 239.64 70.16 2.71 BP _MWD_ IFR_ MS 87 7964.88 53.04 357.02 51.99 6822.44 122.99 122.99 223.21 254.85 61.15 1.11 BP _MWD_ IFR_ MS 88 8050.00 53.04 357.02 85.12 6873.62 190.91 190.91 219.67 291.04 49.01 0.00 Pr ojected to TD [(c)2008 IDEAL ID12_OC_13] Z-112 PB2Fina1 5urvey.TXT SCHLUMBERGER Survey report Client .................... Field ..................... well.. .................. API number ................ Engineer .................. Rig :...................... STATE :.................... ----- Survey calculation m Method for positions.....: Method for DLS............ BP Exploration (Alaska) Inc. Borealis Z-112 PB2 50-029-23380-O1 St. Amour North slope Borough Alaska ethods------------- Minimum curvature Mason & Taylor ----- Depth reference ----------------------- Permanent datum..........: Mean Sea Level Depth reference..........: Driller's Pipe Tally GL above permanent.......: 54.10 ft KB above permanent.......: 82.60 ft DF above permanent.......: 82.60 ft ----- Vertical section origin---------------- Latitude (+N/s-).......... 0.00 ft Departure (+E/w-)......... 0,00 ft ----- Platform reference point--------------- Latitude (+N/S-).......... -999.25 ft Departure (+E/w-)......... -999.25 ft Azimuth from vsect origin to target: 350.00 degrees O t '~ [(c)2008 IDEAL ID12_OC_13]o ~ SCHLUMBERGER Survey Report 11-Feb-2008 16:10:09 Page 1 of 8 spud date... ............ 17-Tan-08 Last survey date.......... 11-Feb-08 Total accepted surveys...: 204 MD of first survey........ 0.00 ft MD of last survey......... 11441.00 ft ----- Geomagnetic data ---------------------- Magnetic model...........: BGGM version 2007 Magnetic date. ...... ... 18-Ian-2008 Magnetic field strength..: 57643.35 GAMA Magnetic dec (+E/w-).....: 23.17 degrees Magnetic dip .............. 80.86 degrees ----- MWD Reference Reference Reference Tolerance Tolerance Tolerance survey Reference G ............... H . ............. Dip ............. of G............ of H .......... of Dip.......... Criteria --------- 1002.68 meal 57643.50 GAMA 80.86 degrees (+/-) 2.50 meal (+/-)300.00 GAMA (+/-) 0.45 degrees ----- Corrections --------------------------- Magnetic dec (+E/w-).....: 23.12 degrees Grid convergence (+E/w-).: 0.00 degrees Total az corr (+E/w-)....: 23.12 degrees (Total az corr = magnetic dec - grid conv) survey Correction Type .. I=Sag Corrected Inclination M=schlumberger Magnetic Correction S=Shell Magnetic Correction F=Failed Axis Correction R=Magnetic Resonance Tool Correction D=Dmag Magnetic Correction 11-Feb-2008 16:10:09 Page 2 of 8 --- -------- ------ ------- ------ -------- -------- ---------------- --------------- ----- ----- ------ Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy Tool Page 1 Z-112 PB2Fina1 Survey.TXT ' # depth angle angle length depth section +N/S- +E/w- displ Azim (deg/ tool Corr - --- (ft) -------- (deg) ------ (deg) ------- (ft) ------ (ft) -------- (ft) -------- (ft) -------- (ft) -------- (ft) ------- (deg) -------- 100f) ----- type (deg) ----- ------ --- 1 -------- 0.00 ------ 0.00 ------- 180.00 ------ 0.00 -------- 0.00 -------- 0.00 -------- 0.00 -------- 0.00 ------- 0.00 -------- 0.00 ----- 0.00 ----- ------ TIP None 2 100.00 0.05 100.17 100.00 100.00 -0.02 -0.01 0.04 0.04 100.17 0.05 BP_GYD CT DMS 3 200.00 0.22 66.19 100.00 200.00 0.02 0.06 0.26 0.27 76.64 0.18 BP_GYD CT DMS 4 300.00 0.22 96.97 100.00 300.00 0.01 0.12 0.63 0.64 79.50 0.12 BP_GYD CT DMS 5 400.00 0.19 142.06 100.00 400.00 -0.20 -0.04 0.92 0.92 92.35 0.16 BP_GYD CT DMS 6 500.00 1.19 180.78 100.00 499.99 -1.36 -1.21 1.01 1.57 140.13 1.05 BP_GYD cT DMS 7 600.00 2.56 180.37 100.00 599.93 -4.58 -4.48 0.98 4.58 167.66 1.37 BP_GYD CT DMS 8 700.00 4.52 182.05 100.00 699.74 -10.63 -10.65 0.82 10.68 175.58 1.96 BP_GYD CT DMS 9 800.00 6.38 178.83 100.00 799.28 -19.98 -20.14 0.80 20.16 177.74 1.88 BP_GYD CT DMS 10 900.00 7.86 179.80 100.00 898.51 -32.20 -32.54 0.93 32.55 178.36 1.48 BP_GYD CT DMS 11 1000.00 12.11 177.01 100.00 996.97 -49.36 -49.86 1.51 49.88 178.27 4.28 BP_GYD CT DMS 12 1039.29 13.99 175.98 39.29 1035.25 -58.18 -58.71 2.05 58.75 178.00 4.82 BP_MWD+IFR+MS 13 1132.62 16.86 172.90 93.33 1125.21 -82.92 -83.40 4.52 83.52 176.90 3.20 BP_MWD+IFR+MS 14 1227.25 18.18 172.23 94.63 1215.44 -111.38 -111.65 8.21 111.95 175.79 1.41 BP_MWD+IFR+MS 15 1322.51 19.42 170.56 95.26 1305.62 -142.06 -142.00 12.82 142.57 174.84 1.42 BP_MWD+IFR+MS 16 1413.28 20.97 168.86 90.77 1390.81 -173.39 -172.82 18.43 173.80 173.91 1.83 BP_MWD+IFR+MS 17 1511.24 22.56 169.42 97.96 1481.78 -209.71 -208.49 25.27 210.02 173.09 1.64 BP_MWD+IFR+MS 18 1607.00 23.37 168.91 95.76 1569.95 -247.07 -245.19 32.29 247.31 172.50 0.87 BP_MWD+IFR+MS 19 1702.93 24.25 168.56 95.93 1657.72 -285.79 -283.17 39.86 285.96 171.99 0.93 BP_MWD+IFR+MS 20 1798.88 24.79 166.29 95.95 1745.02 -325.56 -322.02 48.54 325.66 171.43 1.13 BP_MWD+IFR+MS 21 1894.94 25.17 166.49 96.06 1832.09 -366.05 -361.45 58.08 366.09 170.87 0.41 BP_MWD+IFR+MS 22 1990.56 25.15 166.82 95.62 1918.64 -406.63 -401.01 67.47 406.64 170.45 0.15 BP_MWD+IFR+MS 23 2086.73 24.83 166.48 96.17 2005.80 -447.19 -440.54 76.85 447.19 170.11 0.36 BP_MWD+IFR+MS Page 2 Z- 112 PB2Fina1 Survey.TXT ' 24 2181.63 24.63 166.12 94.90 2092.00 -486.81 -479.11 86.25 486.81 169.80 0.26 BP_MWD+IFR+MS 25 2277.30 26.57 165.40 95.67 2178.28 -528.03 -519.17 96.42 528.05 169.48 2.05 BP_MWD+IFR+Ms 26 2372.50 26.26 165.84 95.20 2263.54 -570.25 -560.19 106.94 570.31 169.19 0.39 BP_MWD+IFR+MS 27 2468.35 25.86 165.66 95.85 2349.64 -612.25 -601.01 117.31 612.35 168.96 0.43 BP_MWD+IFR+MS 28 2563.25 25.66 165.12 94.90 2435.11 -653.36 -640.92 127.71 653.52 168.73 0.32 BP_MWD+IFR+MS 29 2658.78 25.47 167.49 95.53 2521.29 -694.49 -680.96 137.47 694.70 168.59 1.09 BP_MWD+IFR+MS 30 2754.10 24.98 167.34 95.32 2607.52 -735.07 -720.61 146.32 735.31 168.52 0.52 BP_MWD+IFR+MS U [(c)2008 IDEaL ID12_OC_13]0 SCHLUMBERGER Survey Report 11- Feb-2008 16:10:09 Page 3 of 8 --- --- seq -------- -------- Measured ------ ------ Incl ------- ------- azimuth ------ ------ Course -------- -------- TvD -------- -------- vertical ------- ------- Displ --------- --------- Displ ------- ------- Total -------- -------- at ----- ----- DLS ----- ------ ----- ------ srvy Tool # depth angle angle length depth section +N/5- +E/W- displ azim (deg/ tool Corr - --- (ft) -------- (deg) ------ (deg) ------- (ft) ------ (ft) -------- (ft) -------- (ft) ------- (ft) --------- (ft) ------- (deg) -------- 100f) ----- type (deg) ----- ------ --- 31 -------- 2849.16 ------ 24.68 ------- 167.22 ------ 95.06 -------- 2693.79 -------- -774.94 ------- -759.55 --------- 155.11 ------- 775.22 -------- 168.46 ----- 0.32 ----- ------ BP_MWD+IFR+MS 32 2945.21 25.67 167.84 96.05 2780.72 -815.76 -799.44 163.93 816.07 168.41 1.07 BP_MWD+IFR+MS 33 3040.16 25.24 167.87 94.95 2866.45 -856.54 -839.34 172.52 856.88 168.39 0.45 BP_MWD+IFR+MS 34 3136.92 24.61 167.88 96.76 2954.20 -897.29 -879.20 181.08 897.66 168.36 0.65 BP_MWD+IFR+MS 35 3180.65 24.79 167.89 43.73 2993.93 -915.55 -897.07 184.92 915.93 168.35 0.41 BP_MWD+IFR+MS • 36 3250.99 26.01 169.26 70.34 3057.47 -945.71 -926.64 190.88 946.10 168.36 1.93 BP_MWD+IFR+MS 37 3346.94 31.21 172.05 95.95 3141.68 -991.63 -971.97 198.25 991.98 168.47 5.59 BP_MWD+IFR+MS 38 3442.80 31.52 172.29 95.86 3223.53 -1041.48 -1021.40 205.04 1041.77 168.65 0.35 BP_MWD+IFR+MS 39 3538.51 30.73 174.03 95.71 3305.46 -1090.88 -1070.51 210.94 1091.10 168.85 1.25 BP_MWD+IFR+MS 40 3633.31 30.38 175.22 94.80 3387.10 -1138.91 -1118.49. 215.46 1139.05 169.10 0.74 BP_MWD+IFR+MS 41 3729.07 31.40 173.80 95.76 3469.27 -1187.92 -1167.42 220.17 1188.00 169.32 1.31 BP_MWD+IFR+MS 42 3825.55 30.49 167.34 96.48 3552.04 -1237.46 -1216.30 228.25 1237.54 169.37 3.57 BP_MWD+IFR+MS Pa ge 3 z- 112 P62Fina1 Survey.TxT 43 3919.41 30.44 164.30 93.86 3632.95 -1284.91 -1262.43 239.91 1285.02 169.24 1.64 BP_MWD+IFR+MS 44 4015.67 29.76 161.48 96.26 3716.23 -1332.80 -1308.56 254.10 1333.00 169.01 1.63 BP_MWD+IFR+MS 45 4109.84 29.18 160.66 94.17 3798.22 -1378.57 -1352.38 269.12 1378.90 168.75 0.75 BP_MWD+IFR+MS 46 4205.18 28.81 161.19 95.34 3881.61 -1424.20 -1396.06 284.23 1424.70 168.49 0.47 BP_MWD+IFR+MS 47 4298.72 28.91 163.51 93.54 3963.53 -1468.94 -1439.08 297.91 1469.59 168.30 1.20 BP_MWD+IFR+MS 48 4394.07 27.97 165.36 95.35 4047.38 -1514.13 -1482.81 310.11 1514.89 168.19 1.35 BP_MWD+IFR+MS 49 4489.61 23.90 166.96 95.54 4133.28 -1555.81 -1523.36 320.14 1556.64 168.13 4.32 BP_MWD+IFR+MS 50 4585.49 18.14 171.11 95.88 4222.75 -1590.16 -1557.06 326.83 1590.99 168.15 6.20 BP_MWD+IFR+MS 51 4679.47 13.84 174.88 93.98 4313.07 -1616.00 -1582.72 330.10 1616.78 168.22 4.70 BP_MWD+IFR+MS 52 4775.66 10.38 168.29 96.19 4407.11 -1636.13 -1602.67 332.89 1636.88 168.27 3.87 BP_MWD+IFR+MS 53 4870.45 8.67 141.39 94.79 4500.64 -1650.95 -1616.62 339.08 1651.80 168.15 4.97 BP_MWD+IFR+MS 54 4965.43 8.63 109.00 94.98 4594.59 -1660.69 -1624.54 350.29 1661.88 167.83 5.06 BP_MWD+IFR+MS 55 4988.42 8.81 100.41 22.99 4617.32 -1662.14 -1625.42 353.66 1663.45 167.73 5.71 BP_MWD+IFR+MS 56 5060.69 10.40 77.75 72.27 4688.60 -1663.82 -1625.04 365.48 1665.63 167.32 5.63 BP_MWD+IFR+MS 57 5155.95 9.13 51.38 95.26 4782.52 -1659.86 -1618.49 379.79 1662.46 166.79 4.83 BP_MWD+IFR+MS 58 5251.18 10.34 12.69 95.23 4876.48 -1648.34 -1605.43 387.58 1651.55 166.43 6.85 BP_MWD+IFR+MS 59 5345.98 14.05 349.32 94.80 4969.18 -1628.97 -1585.80 387.32 1632.41 166.27 6.44 BP_MWD+IFR+MS 60 5443.25 17.35 343.55 97.27 5062.81 -1602.74 -1560.28 381.02 1606.13 166.28 3.75 BP_MWD+IFR+MS [(c)2008 IDEAL ID12_Oc_13]o SCHLUMBERGER Survey Report 11-Feb -2008 16:10:09 --- -------- ------ ------- ------ --- -------- ------ ------- ------ seq Measured Incl Azimuth Course -------- -------- - -------- -------- - TvD vertical ------ ------ Displ --------- --------- Displ # depth angle angle length depth section +N/s- +E/w- - (ft) (deg) (deg) (ft) --- -------- ------ ------- ------ --- -------- ------ ------- ------ (ft) (ft) -------- -------- - -------- -------- - (ft) ------ ------ (ft) --------- --------- Page 4 of 8 -------- -------- Total ------- ------- At ----- ----- DLS ----- ----- Srvy ------ ------ Tool displ Azim (deg/ tool Corr (ft) -------- -------- (deg) ------- ------- 100f) ----- ----- type ----- ----- (deg) ------ ------ • Page 4 Z-112 PB2Fina1 Survey.TxT 61 5539.23 16.45 346.83 95.98 5154.65 -1574.95 -1533.32 373.87 1578.24 166.30 1.37 BP_MWD+IFR+MS 62 5632.67 17.94 350.43 93.44 5243.91 -1547.35 -1506.25 368.46 1550.66 166.25 1.96 BP_MWD+IFR+MS 63 5724.35 22.17 353.90 91.68 5330.01 -1515.95 -1475.11 364.28 1519.42 166.13 4.79 BP_MWD+IFR+MS 64 5818.24 24.50 352.36 93.89 5416.22 -1478.82 -1438.19 359.81 1482.52 165.95 2.57 BP_MWD+IFR+MS 65 5912.68 26.34 351.33 94.44 5501.51 -1438.31 -1398.07 354.04 1442.20 165.79 2.00 BP_MWD+IFR+MS 66 6005.96 28.21 350.13 93.28 5584.42 -1395.57 -1355.89 347.14 1399.62 165.64 2.09 BP_MWD+IFR+MS 67 6101.82 31.01 350.89 95.86 5667.75 -1348.21 -1309.17 339.35 1352.44 165.47 2.95 BP_MWD+IFR+MS 68 6194.56 33.56 351.98 92.74 5746.15 -1298.70 -1260.19 331.99 1303.19 165.24 2.82 BP_MWD+IFR+MS 69 6289.62 36.32 352.94 95.06 5824.07 -1244.31 -1206.23 324.86 1249.21 164.93 2.96 BP_MWD+IFR+MS 70 6386.12 39.83 355.19 96.50 5900.02 -1184.97 -1147.05 318.76 1190.51 164.47 3.91 BP_MWD+IFR+MS 71 6479.47 42.92 354.14 93.35 5970.07 -1123.48 -1085.62 313.00 1129.84 163.92 3.39 BP_MWD+IFR+MS 72 6575.41 46.29 354.46 95.94 6038.36 -1056.31 -1018.60 306.32 1063.66 163.26 3.52 BP_MWD+IFR+MS 73 6670.43 49.54 355.04 95.02 6102.04 -986.05 -948.38 299.87 994.66 162.45 3.45 BP_MWD+IFR+MS 74 6767.07 52.02 354.69 96.64 6163.14 -911.45 -873.82 293.17 921.69 161.45 2.58 BP_MWD+IFR+MS 75 6862.46 54.27 354.79 95.39 6220.35 -835.39 -797.82 286.17 847.59 160.27 2.36 BP_MWD+IFR+MS 76 6957.53 56.26 355.05 95.07 6274.52 -757.56 -720.00 279.26 772.26 158.80 2.11 BP_MWD+IFR+MS 77 7053.61 57.62 354.87 96.08 6326.93 -677.33 -639.79 272.18 695.28 156.95 1.42 BP_MWD+IFR+MS 78 7149.08 57.17 354.60 95.47 6378.37 -597.18 -559.70 264.80 619.19 154.68 0.53 BP_MWD+IFR+MS 79 7244.45 57.52 355.25 95.37 6429.83 -517.19 -479.72 257.70 544.56 151.76 0.68 BP_MWD+IFR+MS 80 7340.56 57.90 356.03 96.11 6481.18 -436.33 -398.71 251.53 471.42 147.75 0.79 BP_MWD+IFR+MS 81 7435.46 58.12 355.99 94.90 6531.45 -356.29 -318.42 245.93 402.33 142.32 0.23 BP_MWD+IFR+MS 82 7531.48 57.69 355.90 96.02 6582.47 -275.38 -237.28 240.17 337.62 134.65 0.45 BP_MWD+IFR+MS 83 7626.54 57.82 356.94 95.06 6633.19 -195.49 -157.04 235.15 282.77 123.74 0.94 BP_MWD+IFR+MS 84 7713.00 57.59 358.03 86.46 6679.38 -123.03 -84.03 231.95 246.70 109.91 1.10 BP_BLIND 85 7726.00 59.48 357.01 13.00 6686.17 -112.03 -72.95 231.47 242.69 107.49 16.00 BP_BLIND Page 5 z-112 P62Fina1 Survey.TXT 86 7750.70 58.81 357.99 24.70 6698.84 -91.01 -51.76 230.54 236.28 102.66 4.35 BP_INC+TREND 87 7779.91 66.45 359.05 29.21 6712.26 -65.38 -25.85 229.88 231.33 96.42 26.35 BP_INC+TREND 88 7810.01 73.99 0.07 30.10 6722.43 -37.47 2.45 229.67 229.68 89.39 25.25 BP_INC+TREND 89 7840.59 82.00 1.04 30.58 6728.79 -8.09 32.33 229.96 232.22 82.00 26.38 BP_INC+TREND 90 7873.13 91.69 2.06 32.54 6730.58 23.70 64.77 230.84 239.76 74.33 29.94 BP_INC+TREND [(c)2 008 IDEAL ID12_Oc_ 13]o SCHLU MBERGER Survey Rep ort 11- Feb-2008 16:10:09 Page 5 of 8 --- --- Seq -------- -------- Measured ------ ------ Intl ------- ------- Azimuth ------ ------ course -------- -------- TVD -------- -------- Vertical ------- ------- Displ --------- --------- Displ ------- ------- Total -------- -------- At ----- ----- DLS ----- ------ ----- ------ Srvy Tool # - depth (ft) angle (d ) angle (d ) length (ft) depth (ft) section (ft) +N/5- (ft) +E/W- (ft) displ (ft) Azim (de ) (deg/ 100f) tool Corr t e (de ) --- -------- eg ------ eg ------- ------ -------- -------- ------- --------- ------- g -------- ----- yp g ----- ------ --- 91 -------- 7903.44 ------ 97.41 ------- 3.01 ------ 30.31 -------- 6728.18 -------- 53.19 ------- 94.95 --------- 232.18 ------- 250.84 -------- 67.76 ----- 19.13 ----- ------ BP_MWD+IFR+MS 92 7934.64 94.42 0.88 31.20 6724.96 83.54 125.96 233.23 265.07 61.63 11.74 BP_MWD+IFR+MS 93 7965.75 92.99 358.15 31.11 6722.95 114.16 157.00 232.96 280.93 56.02 9.89 BP_MWD+IFR+MS 94 7995.00 97.15 356.81 29.25 6720.36 143.04 186.10 231.68 297.17 51.23 14.94 BP_MWD+IFR+MS 95 8026.31 97.43 358.58 31.31 6716.39 173.81 217.13 230.43 316.61 46.70 5.68 BP_MWD+IFR+MS 96 8056.92 95.72 357.68 30.61 6712.89 203.92 247.52 229.44 337.50 42.83 6.30 BP_MWD+IFR+MS 97 8086.38 95.40 353.44 29.46 6710.03 233.09 276.75 227.17 358.04 39.38 14.37 BP_MWD+IFR+MS 98 8107.65 92.84 346.91 21.27 6708.50 254.29 297.64 223.55 372.24 36.91 32.90 BP_MWD+IFR+MS 99 8139.48 93.01 346.15 31.83 6706.88 286.02 328.55 216.15 393.27 33.34 2.44 BP_MWD+IFR+MS 100 8169.00 92.80 346.00 29.52 6705.38 315.44 357.17 209.05 413.85 30.34 0.87 BP_MWD+IFR+MS 101 8199.91 92.94 345.37 30.91 6703.83 346.22 387.08 201.42 436.35 27.49 2.09 BP_MWD+IFR+MS 102 8230.61 93.35 345.72 30.70 6702.15 376.78 416.76 193.77 459.60 24.94 1.75 BP_MWD+IFR+MS 103 8260.88 93.36 345.35 30.27 6700.38 406.91 446.02 186.22 483.34 22.66 1.22 BP_MWD+IFR+MS 104 8291.28 92.06 345.65 30.40 6698.94 437.18 475.42 178.62 507.87 20.59 4.39 BP_MWD+IFR+MS 105 8321.87 89.32 341.94 30.59 6698.57 467.58 504.78 170.08 532.67 18.62 15.08 BP_MWD+IFR+MS 106 8352.38 89.40 341.72 30.51 6698.91 497.78 533.77 160.57 557.40 16.74 0.77 BP_MWD+IFR+MS Page 6 Z-112 P62Fina1 survey.TxT 107 8382.69 89.54 341.72 30.31 6699.19 527.77 562.55 151.06 582.48 15.03 0.46 BP_MWD+IFR+MS 108 8414.91 90.40 340.98 32.22 6699.21 559.62 593.08 140.76 609.55 13.35 3.52 BP_MWD+IFR+MS 109 8445.44 90.73 341.81 30.53 6698.91 589.81 622.01 131.02 635.66 11.89 2.93 BP_MWD+IFR+MS 110 8478.33 90.86 342.81 32.89 6698.45 622.40 653.34 121.03 664.46 10.49 3.07 BP_MWD+IFR+MS 111 8510.21 90.95 342.89 31.88 6697.95 654.03 683.80 111.63 692.85 9.27 0.38 BP_MWD+IFR+MS 112 8542.08 90.16 344.01 31.87 6697.64 685.69 714.35 102.55 721.67 8.17 4.30 BP_MWD+IFR+MS 113 8574.32 88.82 344.22 32.24 6697.93 717.76 745.35 93.73 751.22 7.17 4.21 BP_MWD+IFR+MS 114 8605.73 88.58 345.75 31.41 6698.64 749.04 775.68 85.59 780.39 6.30 4.93 BP_MWD+IFR+MS 115 8641.12 87.04 344.73 35.39 6699.99 784.28 809.88 76.58 813.49 5.40 5.22 BP_MWD+IFR+MS 116 8670.00 87.80 345.74 28.88 6701.29 813.03 837.78 69.23 840.63 4.72 4.37 BP_MWD+IFR+MS 117 8701.99 87.69 344.25 31.99 6702.55 844.87 868.65 60.95 870.79 4.01 4.67 BP_MWD+IFR+MS 118 8733.84 88.24 344.93 31.85 6703.68 876.56 899.34 52.50 900.87 3.34 2.74 BP_MWD+IFR+MS 119 8764.84 88.82 345.34 31.00 6704.48 907.44 929.29 44.55 930.36 2.74 2.29 BP_MWD+IFR+Ms 120 8796.27 89.27 345.03 31.43 6705.00 938.75 959.67 36.51 960.36 2.18 1.74 BP_MWD+IFR+Ms [(c)2008 IDEAL ID12_OC_13]0 SCHLUMBERGER survey Report 11-Feb-2008 16:10:09 --- --- seq -------- -------- Measured ------ ------ Incl ------- ------- Azimuth ------ ------ Course -------- -------- TvD -------- -------- vertical ------- ------- Displ # depth angle angle length depth section +N/5- - --- (ft) -------- (deg) ------ (deg) ------- (ft) ------ (ft) -------- (ft) -------- (ft) ------- --- 121 -------- 8828.93 ------ 87.28 ------- 344.08 ------ 32.66 -------- 6705.98 -------- 971.25 ------- 991.13 122 8862.08 87.08 342.51 33.15 6707.61 1004.13 1022.85 123 8892.42 88.69 341.91 30.34 6708.73 1034.17 1051.71 124 8923.33 90.50 341.77 30.91 6708.95 1064.76 1081.08 125 8955.11 90.30 341.74 31.78 6708.73 1096.21 1111.26 Page 7 Page 6 of 8 ------- ------- Displ ------- ------- Total -------- -------- At ----- ----- DLS ----- ------ ----- ------ srvy Tool +E/w- displ Azim (deg/ tool Corr (ft) ------- (ft) ------- (deg) -------- 100f) ----- type (deg) ----- ------ ------- 27.82 ------- 991.52 -------- 1.61 ----- 6.75 ----- ------ BP_MWD+IFR+Ms 18.30 1023.01 1.02 4.77 BP_MWD+IFR+Ms 9.04 1051.75 0.49 5.66 BP_MWD+IFR+Ms -0.60 1081.08 359.97 5.87 BP_MWD+IFR+MS -10.55 1111.31 359.46 0.64 BP_MWD+IFR+MS Z-112 P62Fina1 Survey.TxT 126 8986.88 90.16 342.55 31.77 6708.60 1127.68 1141.50 -20.29 1141.68 358.98 2.59 BP_MWD+IFR+MS 127 9018.18 90.17 343.23 31.30 6708.51 1158.74 1171.42 -29.50 1171.79 358.56 2.17 BP_MWD+IFR+MS 128 9051.07 86.47 339.72 32.89 6709.48 1191.25 1202.58 -39.94 1203.24 358.10 15.50 BP_MWD+IFR+MS 129 9082.26 87.88 338.83 31.19 6711.01 1221.85 1231.72 -50.96 1232.77 357.63 5.34 BP_MWD+IFR+MS 130 9114.01 88.53 337.88 31.75 6712.01 1252.93 1261.21 -62.67 1262.77 357.16 3.62 BP_MWD+IFR+MS 131 9144.31 89.28 338.57 30.30 6712.59 1282.59 1289.34 -73.90 1291.46 356.72 3.36 BP_MWD+IFR+MS 132 9175.86 88.91 339.05 31.55 6713.09 1313.54 1318.76 -85.31 1321.51 356.30 1.92 BP_MWD+IFR+MS 133 9207.75 88.70 339.11 31.89 6713.75 1344.84 1348.54 -96.69 1352.00 355.90 0.68 BP_MWD+IFR+MS 134 9239.79 88.97 338.79 32.04 6714.40 1376.28 1378.43 -108.20 1382.67 355.51 1.31 BP_MWD+IFR+MS 135 9271.96 89.76 338.71 32.17 6714.76 1407.83 1408.41 -119.86 1413.51 355.14 2.47 BP_MWD+IFR+MS 136 9303.30 89.87 338.39 31.34 6714.86 1438.55 1437.58 -131.32 1443.57 354.78 1.08 BP_MWD+IFR+MS 137 9336.63 89.83 338.08 33.33 6714.95 1471.18 1468.54 -143.67 1475.55 354.41 0.94 BP_MWD+IFR+MS 138 9367.00 89.80 337.87 30.37 6715.05 1500.88 1496.69 -155.06 1504.70 354.09 0.70 BP_MWD+IFR+MS 139 9397.55 90.69 338.36 30.55 6714.92 1530.77 1525.04 -166.45 1534.10 353.77 3.33 BP_MWD+IFR+MS 140 9429.58 91.61 339.54 32.03 6714.27 1562.20 1554.92 -177.95 1565.07 353.47 4.67 BP_MWD+IFR+MS 141 9460.83 91.27 339.88 31.25 6713.49 1592.94 1584.23 -188.79 1595.43 353.20 1.54 BP_MWD+IFR+MS 142 9492.49 89.49 338.26 31.66 6713.28 1624.02 1613.79 -200.09 1626.15 352.93 7.60 BP_MWD+IFR+MS 143 9524.23 89.52 337.08 31.74 6713.55 1655.03 1643.15 -212.15 1656.79 352.64 3.72 BP_MWD+IFR+MS 144 9556.18 89.87 336.94 31.95 6713.72 1686.16 1672.56 -224.63 1687.58 352.35 1.18 BP_MWD+IFR+MS 145 9588.03 88.32 336.89 31.85 6714.22 1717.18 1701.86 -237.12 1718.30 352.07 4.87 BP_MWD+IFR+MS 146 9620.38 87.12 337.16 32.35 6715.51 1748.68 1731.62 -249.73 1749.53 351.79 3.80 BP_MWD+IFR+MS 147 9651.39 87.29 336.15 31.01 6717.02 1778.81 1760.06 -262.01 1779.45 351.53 3.30 BP_MWD+IFR+MS 148 9683.11 89.18 336.99 31.72 6718.00 1809.65 1789.15 -274.61 1810.10 351.27 6.52 BP_MWD+IFR+MS Pa ge 8 • 149 9715.40 90.93 339.04 150 9746.67 90.79 341.33 [(c)2008 IDEAL ID12_OC_13]o Z-112 PB2Fina1 Survey.TXT 32.29 6717.97 1841.23 1819.08 -286.70 1841.54 351.04 8.35 BP_MWD+IFR+MS 31.27 6717.50 1872.04 1848.50 -297.30 1872.25 350.86 7.34 BP_MWD+IFR+MS SCHLUMBERGER Survey Report 11- Feb-2008 16:10:09 Page --- --- Seq -------- -------- Measured ------ ------ Incl ------- ------- Azimuth ------ ------ Course -------- -------- TVD -------- -------- Vertical ------- ------- Displ --------- --------- Displ ------- ------- Total -------- -------- At # depth angle angle length depth section +N/S- +E/W- displ Azim - --- (ft) -------- (deg) ------ (deg) ------- (ft) ------ (ft) -------- (ft) -------- (ft) ------- (ft) --------- (ft) ------- (deg) -------- 151 9777 98 89 04 341 59 31.31 6717.55 1903.00 1878.18 -307.26 1903.15 350.71 152 9809.94 87.84 340.94 31.96 6718.42 1934.58 1908.44 -317.52 1934.67 350.55 153 9841.62 87.36 342.10 31.68 6719.74 1965.88 1938.46 -327.55 1965.93 350.41 154 9873.49 87.43 341.34 31.87 6721.19 1997.39 1968.69 -337.53 1997.41 350.27 155 9906.00 86.74 341.74 32.51 6722.85 2029.50 1999.48 -347.82 2029.51 350.13 156 9937.81 157 9969.35 158 10001.69 159 10033.22 160 10064.76 161 10097.23 162 10129.40 163 10160.60 164 10193.65 165 10224.67 166 10257.27 167 10289.79 7of8 ----- ----- ------ ----- ----- ------ DLS Srvy Tool (deg/ tool Corr 100f) type (deg) ----- ----- ------ 5.65 BP_MWD+IFR+MS 4.27 BP_MWD+IFR+MS 3.96 BP_MWD+IFR+MS 2.39 BP_MWD+IFR+MS 2.45 BP_MWD+IFR+MS 86.98 340.94 31.81 6724.59 2060.90 2029.57 -357.98 2060.90 350.00 2.62 BP_MWD+IFR+MS 88.67 340.42 31.54 6725.79 2092.00 2059.32 -368.40 2092.01 349.86 5.61 BP_MWD+IFR+MS 89.25 343.34 32.34 6726.37 2124.01 2090.04 -378.46 2124.03 349.74 9.20 BP_MWD+IFR+MS 88.90 341.60 31.53 6726.88 2155.26 2120.10 -387.96 2155.31 349.63 5.63 BP_MWD+IFR+MS 90.35 342.25 31.54 6727.09 2186.49 2150.09 -397.74 2186.57 349.52 5.04 BP_MWD+IFR+MS 90.35 342.73 32.47 6726.89 2218.68 2181.05 -407.51 2218.80 349.42 1.48 BP_MWD+IFR+MS 90.28 342.03 32.17 6726.71 2250.57 2211.71 -417.25 2250.73 349.32 2.19 BP_MWD+IFR+MS 90.24 342.57 31.20 6726.57 2281.48 2241.43 -426.73 2281.69 349.22 1.74 BP_MWD+IFR+MS 90.31 342.70 33.05 6726.41 2314.26 2272.98 -436.60 2314.53 349.13 0.45 BP_MWD+IFR+MS 90.31 342.80 31.02 6726.24 2345.03 2302.60 -445.80 2345.36 349.04 0.32 BP_MWD+IFR+MS 90.45 343.23 32.60 6726.03 2377.39 2333.78 -455.32 2377.78 348.96 1.39 BP_MWD+IFR+MS 90.72 343.05 32.52 6725.70 2409.67 2364.90 -464.75 2410.13 348.88 1.00 BP_MWD+IFR+MS Pa ge 9 r~ U • 168 10319.95 169 10352.35 170 10384.16 171 10415.69 172 10446.21 173 10477.42 174 10509.85 175 10539.57 176 10569.91 177 10601.00 178 10632.77 179 10663.41 180 10696.05 z- 112 PB2Fina1 Survey.TXT 90.96 343.79 30.16 6725.25 2439.63 2393.80 -473.36 2440.15 348.81 2.58 BP_MWD+IFR+MS 91.41 344.59 32.40 6724.58 2471.86 2424.97 -482.18 2472.44 348.75 2.83 BP_MWD+IFR+MS 91.44 344.45 31.81 6723.79 2503.51 2455.62 -490.67 2504.16 348.70 0.45 BP_MWD+IFR+MS 91.31 344.47 31.53 6723.04 2534.89 2485.99 -499.11 2535.59 348.65 0.42 BP_MWD+IFR+MS 91.27 345.11 30.52 6722.35 2565.27 2515.43 -507.12 2566.04 348.60 2.10 BP_MWD+IFR+MS 89.21 343.87 31.21 6722.22 2596.34 2545.50 -515.46 2597.17 348.55 7.70 BP_MWD+IFR+MS 90.04 342.43 32.43 6722.43 2628.53 2576.53 -524.86 2629.45 348.49 5.13 BP_MWD+IFR+MS 91.31 342.63 29.72 6722.08 2658.00 2604.88 -533.78 2659.01 348.42 4.33 BP_MWD+IFR+MS 91.48 343.64 30.34 6721.34 2688.11 2633.91 -542.58 2689.21 348.36 3.37 BP_MWD+IFR+MS 90.48 344.61 31.09 6720.81 2719.03 2663.81 -551.09 2720.21 348.31 4.48 BP_MWD+IFR+MS 89.39 343.44 31.77 6720.85 2750.63 2694.35 -559.83 2751.89 348.26 5.03 BP_MWD+IFR+MS 90.35 343.23 30.64 6720.92 2781.06 2723.70 -568.62 2782.42 348.21 3.21 BP_MWD+IFR+MS 90.96 343.76 32.64 6720.54 2813.49 2754.99 -577.89 2814.95 348.15 2.48 BP_MWD+IFR+MS [(c)2008 IDEAL ID12_OC_13]~ SCHLUMBERGER Survey Report 11-Feb-2008 16:10:09 Page 8 of 8 Seq Measured Incl Azimuth Course TvD Vertical Displ Displ Total ,4t # depth angle angle length depth section +N/5- +E/W- displ Azim - (ft) (deg) (deg) (ft) (ft) <ft) (ft) (ft) (ft) (deg) 181 10727.97 88.22 343.73 31.92 6720.77 2845.21 2785.63 -586.82 2846.77 348.10 182 10757.27 89.15 342.86 29.30 6721.44 2874.31 2813.69 -595.24 2875.96 348.06 183 10788.67 90.96 .343.83 31.40 6721.41 2905.49 2843.77 -604.24 2907.26 348.00 184 10820.63 91.10 345.09 31.96 6720.84 2937.30 2874.56 -612.80 2939.15 347.97 185 10850.53 91.20 344.26 29.90 6720.24 2967.06 2903.39 -620.70 2969.00 347.93 DLS Srvy TOO1 (deg/ tool Corr 100f) type (deg) ----- ----- ------ ----- ----- ------ 8.58 BP_MWD+IFR+MS 4.35 BP_MWD+IFR+MS 6.54 BP_MWD+IFR+MS 3.97 BP_MWD+IFR+MS 2.80 BP_MWD+IFR+MS • • Page 10 186 10883.23 187 10897.05 188 10915.34 189 10947.70 190 10979.06 191 11010.00 192 11040.65 193 11072.27 194 11104.53 195 11135.92 196 11168.00 197 11199.42 198 11231.02 199 11263.10 200 11293.03 201 11326.27 202 11357.04 203 11378.33 204 11441.00 Z-112 P62Fina1 5urvey.TXT 90.65 344.91 32.70 6719.71 2999.61 2934.91 -629.39 3001.64 347.90 2.60 BP_MWD+IFR+MS 88.08 344.20 13.82 6719.86 3013.37 2948.23 -633.07 3015.43 347.88 19.29 BP_MWD+IFR+MS 85.65 347.98 18.29 6720.86 3031.58 2965.95 -637.46 3033.68 347.87 24.54 BP_MWD+IFR+MS 83.68 346.81 32.36 6723.87 3063.77 2997.39 -644.49 3065.90 347.87 7.07 BP_MWD+IFR+MS 85.13 346.56 31.36 6726.93 3094.93 3027.76 -651.68 3097.10 347.85 4.69 BP_MWD+IFR+MS 87.19 347.59 30.94 6729.00 3125.75 3057.85 -658.59 3127.96 347.85 7.44 BP_MWD+IFR+MS 88.46 347.24 30.65 6730.17 3156.35 3087.74 -665.26 3158.59 347.84 4.30 BP_MWD+IFR+MS 90.11 347.07 31.62 6730.56 3187.93 3118.56 -672.29 3190.21 347.83 5.25 BP_MWD+IFR+MS 91.72 347.13 32.26 6730.04 3220.14 3150.00 -679.49 3222.46 347.83 4.99 BP_MWD+IFR+MS 91.96 345.04 31.39 6729.04 3251.44 3180.46 -687.03 3253.82 347.81 6.70 BP_MWD+IFR+MS 92.06 343.31 32.08 6727.91 3283.33 3211.30 -695.78 3285.81 347.78 5.40 BP_MWD+IFR+MS 93.57 343.52 31.42 6726.37 3314.51 3241.38 -704.73 3317.10 347.73 4.85 BP_MWD+IFR+MS 95.36 343.85 31.60 6723.91 3345.82 3271.61 -713.58 3348.53 347.70 5.76 BP_MWD+IFR+MS 96.57 342.01 32.08 6720.57 3377.48 3302.11 -722.95 3380.32 347.65 6.84 BP_MWD+IFR+MS 98.50 342.38 29.93 6716.65 3406.88 3330.36 -732.02 3409.86 347.60 6.56 BP_MWD+IFR+MS 99.09 344.58 33.24 6711.57 3439.51 3361.85 -741.36 3442.62 347.56 6.78 BP_MWD+IFR+MS 98.09 342.90 30.77 6706.97 3469.75 3391.05 -749.88 3472.98 347.53 6.30 BP_MWD+IFR+MS • 96.98 344.25 21.29 6704.18 3490.73 3411.30 -755.85 3494.03 347.51 8.17 BP_MWD+IFR+MS 96.98 344.25 62.67 6696.56 3552.62 3471.17 -772.73 3556.14 347.45 0.00 Project to TD [(c)2008 IDEAL ID12_OC_13] Page 11 r Drilling & Measurements MWD/LWD Log Product Delivery Customer BP Exploration (Alaska) Inc. Dispatched To: Christine Mahnken Well No Z-112-PB2 Date Dispatched: 15-Jan-08 Installation/Rig Nabors9ES Dispatched By: F. Medina LWD Log Delivery V2.1, 03-06-06 Data No Of Prints No of Floppies Surveys 2 1 Received By: Please sign and return to: nnnn Drilling & Measurements LWD Division / ~ v ~ ~ 8 ( r/yL 2525 Gambell Street, Suite 400 Q Anchorage, Alaska 99501 fclarke3@slb.com Fax;907-561-8317 Z-1121iner configuration ~ • Page 1 of 2 Maunder, Thomas E (DOA) From: Maunder, Thomas E (DOA) Sent: Wednesday, February 13, 2008 8:15 AM To: 'Peltier, Brandon' Subject: RE: Z-112 (207-172) liner configuration Thanks Brandon, As I indicated earlier, I don't see an issue here. Primary isolation of the formation will be the cemented 7" casing. The 4-1/2" liner will be in zone. You might check the details on your drawing as I believe it indicates that the assembly outside the window will be 7". Also, please include the permit number in the subject line. Call or message with any questions. Tom Maunder, PE AOGCC From: Peltier, Brandon [maiito:Brandon.Peltier@bp.com] Sent: Wednesday, February 13, 2008 7:38 AM To: Maunder, Thomas E (DOA) Subject: RE: Z-lit liner configuration Tom I have attached a well bore diagram for you to view. We will run 4-6 open hole MPas packers with sliding sleeves between them. There will be a few hundred feet of slotted liner below the deepest MPas, at the toe. This completion will allow us to selectively shut off zones as necessary without having to do a cement squeeze. Let me know if you need more. Brandon Peltier BP Exploration (Alaska), Inc. Operations Drilling Engineer GPB Rotary Drilling (907) 564-5912 (Direct) (907) 748-7838 (Mobile) Brandon.Peltier@bp.com From: Maunder, Thomas E {DOA) {mailto:tom.maunder@alaska.gov] Sent: Tuesday, February 12, 2008 4:04 PM To: Peltier, Brandon Subject: RE: Z-1121iner configuration Brandon, Could you send a more descriptive message regarding the change? I don't believe there should be an issue. Tom Maunder, PE AOGCC 2/13/2008 Z-112 liner configuration ~ ~ Page 2 of 2 From: Peltier, Brandon [mailto:Brandon.Peltier@bp.com] Sent: Tuesday, February 12, 2008 4:01 PM To: Maunder, Thomas E (DOA) Subject: Z-112 liner configuration Tom We are currentty drilling the production hole section on Z-112, with about 2000' left. W We have changed our planned liner configuration on Z-112 from a soli, cemented, and perforated to a modified slotted/solid liner with sliding sleeves and open hole packers. Do you require anything from us #or this change? Brandon Peltier BP Exploration (Alaska), Inc. Operations Drilling Engineer GPB Rotary Drilling (907) 564-5912 (Direct) (907) 748-7838 {Mobile) Brandon. Pettier@bp. com 2/13/2008 yy NU"'~le1~D _ w ~ ~ ~ ~~ ~ p ~l ~ ~ S~ NOTES: •~wCHROM E TBG"~ I KB. ELEV = BP. B..EV = KOP = _..-__...._-- 500 r _ N}~c Angle = 96 @ 8067 DatumPAD = 20" QONDUCfOR 148' CMtum TVD = ~9-5l8° CSG, 40#, L-80 BTC, ID = 8.835' 1 1--{ 9-518' TA M PORT COLLA R 4-i12' HES X NIP, ID = 3.813" GAS LIFT MANDRf3_S ST hAD TVD DEV TYPE VLV LATC7-1 PORT DATE 6 2600 !(BG-2 5 s4oo KBG-2 4100 KBG-2 3 4800 KBG-2 2 5500 I~G-2 1 TBD K6G-2 ~7° CSG, 26#, L-80 TCII, .0383 bpf, ID= 6.276" ~ Minimum I©= 3.725" ~ xxxx' 4-112" XN Ni le TBD H 4-112' XD DURO SLIDING SLV, ID = TBD 4-112` HES X NIP, ID = 3.813° 9'BD 7' X 4-112" BKR S-3 PKR, ID = 3.875" L-112' HES X NIP, ID = 3.813" 4-1/2" HES XN NIP. ID = 3.725" ~~4-1l2" TBG, 12.6#, 13-Cr, VT, .0152 bpf, ID= 3.958' f 7" BKR WHIPSTOCK TKC4 7° HES EZSV TBD 7" CSG, 26#, L-S0, BTGM, .0383 bpf, ID = 6.27 811 B" PERFORATION SUMvtARY R~ LOG: LVdD ON ANGLE AT TOP R32F: Note: Refer to Production OB for historical pert data SIZE SPF NTBZVAL OpnlSgz DOTE 2-112" 6 O ~ rsD ~ In~A CK SLV , id = 4.410" 112" WLEG, ID = 4.000" ~81®tXlT WINDOW tT"~ TKC4-XXxX ~ xxx' 7" MA RKER JT ` w I W! RA TA G ~~. V1@' RA TAG PApas "'_- Pacleers and ~" hiding Sleeves 4-112" WR, 12.6 #, L-80 IBT-M, ID = ice` ~`/ Slotted Liner DATE REV RY ~hRv18VT'S DATE REV f3Y COPAPAB+iTS AIRORA UNff 10r3t)1Ii7 BJP Proposed Completion VV~L: Z-112 FERMT No: AR No: SEC 1YYP RGE NSL Fa BP Ei~loratian (Alaska] U gyrodata Gyrodata Incorporated 1682 W. Sam Houston Pkwy. N. Houston. Texas 77043 713/461-3146 Fax: 713/461-0920 • E~EiVED ~' ~U ® t7 2OOU SURVEY REPORT BP Z-Pad #Z-112 Prudhoe Bay, AK AK0108G_104 20 January 2008 Alaska Oil & Gas Cons. Commission Anchorage Serving the Worldwide Energy Industry witPi Predsion Survey ?nsirunientatio;~ ~~~-~~~ • gyro ata Gyrodata Incorporated 1682 W. Sam Houston Pkwy. N. Houston, Texas 77043 713/461-3146 Fax: 713/461-0920 February 4, 2008 State of Alaska - AOGCC Attn: Christine Mahnken 333 W. 7th Ave, Suite 100 Anchorage, Alaska 99501 Re: Z-Pad, Well #Z-112 Prudhoe Bay, Alaska C~ Enclosed, please find two (2) copies, and one (1) disk of the completed survey for the above referenced well. We would like to take this opportunity to thank you for using Gyrodata, and we look forward to serving you in the future. Sincerely, ~~ ~ ~ Rob Shoup ~~ North American Regional Manager RS:kI Serving the Worldwide Energy Industry ~~niith ?recision Sur~iey `snstr;Trr~enfator7 A Gyrodata Directional Survey for B.P. EXPLORATION Lease: Z-Pad Well: Z-112, 4" Drillpipe Location: Nabors #9-ES, Prudhoe Bay, Alaska Job Number: AK0108G 104 Run Date: 20 Jan 2008 Surveyor: Steve Thompson; Henry Drew Calculation Method: MINIMUM CURVATURE Survey Latitude: 70.297704 deg. N Longitude: 149.197763 deg. W Azimuth Correction: Gyro: Bearings are Relative to True North Vertical Section Calculated from Well Head Location Closure Calculated from Well Head Location i Horizontal Coordinates Calculated from Well Head Location A Gyrodata Directional Survey B.P. Exploration Lease: Z-Pad Well: Z-112, 4" Drillpipe Location: Nabors #9-ES, Prudhoe Bay, Alaska Job Number: AK0108G 104 MEASURED I N C L AZIMUTH BORE HOLE DEPTH BEARING feet deg. deg. deg. min. DOGLEG VERTICAL CLOSURE HORIZONTAL SEVERITY DEPTH DIST. AZIMUTH COORDINATES deg./ feet feet deg. feet 100 ft. 0.00 0.00 0.00 N 0 0 E 0.00 0.00 0.0 0.0 0.00 N 0.00 E ------------------------------------------------------------------------------------------------------------------------------------------------------------------ 0 - 1000 FT. RATE GYROSCOPIC MULTISHOT SURVEY RUN INSIDE 4" DRILLPIl'E ALL MEASURED DEPTHS AND COORDINATES REFERENCED TO NABORS #9-ES ROTARY TABLE OF 28.4 FT. ABOVE GROUND LEVEL ------------------------------------------------------------------------------------------------------------------------------------------------------------------ 100.00 0.05 100.17 S 79 50 E 0.05 100.00 0.0 100.2 0.01 S 0.04 E 200.00 0.22 66.19 N 66 12 E 0.18 200.00 0.3 76.7 0.06 N 0.26 E 300.00 0.22 96.97 S 83 2 E 0.12 300.00 0.6 79.5 0.12 N 0.63 E 400.00 0.19 142.06, S 37 56 E 0.16 400.00 0.9 92.3 0.04 S 0.92 E 500.00 1.19 180.78 S 0 47 W 1.04 499.99 1.6 140.1 1.20 S 1.00 E 600.00 2.56 180.37 S 0 22 W 1.37 599.93 4.6 167.7 4.46 S 0.97 E 700.00 4.52 182.05 S 2 3 W 1.96 699.74 10.7 175.6 10.63 S 0.82 E 800.00 6.38 178.83 S 1 10 E 1.89 799.28 20.1 177.7 20.12 S 0.79 E 900.00 7.86 179.80 S 0 12 E 1.48 898.51 32.5 178.4 32.51 S 0.93 E 1000.00 12.11 177.01 S 2 59 E 4.28 996.97 49.8 178.3 49.83 S 1.50 E Final Station Closure: Distance: 49.85 ft Az: 178.28 deg. 2 B.P. Exploration - Well: Z-Pad Z-112 4" Drillpipe Location: Nabors #9-ES, Prudhoe Bay, Alaska 0 -5 -10 -15 ,.~ -20 c~ z _ -25 O Z -30 -35 -40 -45 -50 Inrun Gyrodata _ AK0108G_104 DEFINITIVE - ---- - i .--- --- ------------- ------- - i B L M TTOM HOLE CATED :1000.00 i ).0 0.2 0.4 0.6 0. 8 1. 0 1.2 ].4 C~ FASTING (ft) B.P. Exploration . Well: Z-Pad Z-112 4" Drill pipe Location: Nabors #9-ES, Prudhoe Bay, Alaska 12 11- 10- 9- g- 0 0 ~ 7- a~ -v ~ 6- w w C~ 5 - w J ~ 4- 3- 2- 1- 0- Inrun Gyrodata AK0108G 104 DEFINITIVE I - - -- - -~ ------- _- __- --------- -~Q_TLOLL _O LOCATED MD: 100 .00 I I i ~ i i ~ ~ 100 200 300 400 500 600 700 800 900 1000 1100 MEASURED DEPTH (ft) • B.P. Exploration Well: Z-Pad Z-112 4" Drillpipe Location: Nabors #9-ES, Prudhoe Bay, Alaska 70 68 '~ 66 a~ v w a 64 w a g w H 62 60 58 Inrun Gyrodata AK0108G_104 DEFINITIVE i i BOTTOM LOCATED OLE ____ MD: 100 .00 10 0 20 0 30 0 40 0 50 0 60 0 70 0 80 0 90 0 10 00 11 00 ~~ MEASURED DEPTH (ft) B.P. Exploration ,Well: Z-Pad Z-112 4" Drill pipe Location: Nabors #9-ES, Prudhoe Bay, Alaska 12 11 10 9 8 z O 7 H Q z ~ 6 U Z 5 4 3 2 1 0 Inrun Gyrodata AK0108G_104 DEFINITIVE - - --- -- BOTTOM LOCATED --198 OLE 0--- i 10 0 20 0 30 0 40 0 50 0 60 0 70 0 80 0 90 0 1000 11 00 U MEASURED DEPTH (ft) o d ~ SARAH PALIN, GOVERNOR C~I`-7~RQ0 O ~ I~~ 333 W, 7th AVENUE, SUITE 100 ~1~~~~uu~~iiii---777-7 ANCHORAGE, ALASKA 99501-3539 PHONE (907) 279-1433 FAX (907) 276-7542 Robert Tirpack Engineering Team Leader BP Exploration Alaska Inc PO Box 196612 Anchorage, AK 99519-6612 Re: Prudhoe Bay Field, Borealis Oil Pool, PBU Z-112 Engineering Team Leader Permit No: 207-172 Surface Location: 4305' FSL, 3616' FEL, SEC. 19, Tl 1N, R12E, UM, (AS PLANNED) Bottomhole Location: 4621' FSL, 4721' FEL, SEC. 18, T11N, R12E, UM Dear Mr. Tirpack: Enclosed is the approved application for permit to drill the above referenced development well. This permit to drill does not exempt you from obtaining additional permits or an approval required by law from other governmental agencies and does not authorize conducting drilling operations until all other required permits and approvals have been issued. In addition, the Commission reserves the right to withdraw the permit in the event it was erroneously issued. Operations must be conducted in accordance with AS 31.05 and Title 20, Chapter 25 of the Alaska Administrative Code unless the Commission specifically authorizes a variance. Failure to comply with an applicable provision of AS 31.05, Title 20, Chapter 25 of the Alaska Administrative Code, or a Commission order, or the terms and conditions of this permit may result in the revocation or suspension of the permit. When providing notice for a representative of the Commission to witness any required test, contact the Commission's petroleum field ins (pager). ~~~ DATED this day of m th, 2007 cc: Department of Fish & Game, Habitat Section w/o encl. Department of Environmental Conservation w/o encl. ~~ STATE OF ALASKA >~~ ~~~~'~~ ~; ~ ALASl~IL AND GAS CONSERVATION COMMI N ~~ ~~ PERMIT TO DRILL ~2-( DEC p ~ pp7 20 AAC 25.005 1 a. Type of work ® Drill ^Redrill ^ Re-Entry 1 b. Current Well Class ^ Exploratory ^ Development Gas ^ Service ^ Multiple Zone ^ Stratigraphic Test ®Development Oil ^ Single Zone 1 c. ~ ~i~~l ~'dpr~dgSe Qfi1f11IS~100 Coalbed Me~OfQ~as Hydrates ^ Shale Gas ~~ii~~ 2. Operator Name: BP Exploration (Alaska) Inc. 5. Bond: ®Blanket ^ Single Well Bond No. 6194193 11. Well Name and Number: PBU Z-112 3. Address: P.O. Box 196612, Anchorage, Alaska 99519-6612 6. Proposed Depth: MD 13490 TVD 6723 12. Field /Pool(s): Prudhoe Bay Field /Borealis 4a. Location of Well (Governmental Section): Surface: 4305' FSL 19 T11N 3613' FEL SEC R12E UM (As Planned) 7. Property Designation: ADL 028262 Pool , , , , , . Top of Productive Horizon: 4873' FSL, 3447' FEL, SEC. 19, T11 N, R12E, UM 8. Land Use Permit: 13. Approximate Spud Date: January 15, 2008 Total Depth: 4621' FSL, 4721' FEL, SEC. 18, T11 N, R12E, UM 9. Acres in Property: 2560 14. Distance to Nearest Property: 6400' 4b. Location of Well (State Base Plane Coordinates): Surface: x-599064 y-5959100 Zone-ASP4 10. KB Elevation Plan (Height above GL): 82.5 feet 15. Distance to Nearest Well Within Pool: 1600' 16. Deviated Wells: Kickoff Depth: 500 feet Maximum Hole An le: 96 de rees 17. Maximum Anticipated Pressures in psig (see 20 AAC 25.035) Downhole: 3265 Surface: 2582 18. C sin Pr m: S eci catio n To - Se ~n De th -Bottom uant~ of Cemen c.f. r a ks Hole Casin Wei ht Grade Cou lin Len th MD TVD MD TVD includin sta a data 42" 20" 215.5# A-53 Weld 108' Surface Surface 108' 108' 260 sx Arcti et A r x. 12-1/4" 9-5/8" 40# L-80 BTC 32 0' Surface Surface 3260' 3067' 603 sx Dee Crete 388 sx Class'G' 8- /4" 7" 2 L-8 TC-II 54 rfa rfa 430' 92' B I w 8-3/4" 7" 26# L-80 BTC-M 2686' 543 ' 5092' 8116' 6824' 267 sx LiteCrete 148 sx Class'G' 6-1/8" 4-1/2" 12.6# L-80 IBT-M 5818' 7672' 6595' 13490' 6723' 663 sx lass'G' 19. PRESE NT WELL CONDITION SUMMARY (To be completed for Redrill and Re-entry Operations) Total Depth MD (ft): Total Depth TVD (ft): Plugs (measured): Effective Depth MD (ft): Effective Depth TVD (ft): Junk (measured): asing Length Size ement' alume D D Conductor /Structural Surface Intermediate Pr ducti n Liner Perforation Depth MD (ft): Perforation Depth TVD (ft): 20. Attachments ^ Filing Fee, $100 ^ BOP Sketch ®Drilling Program ^ Time vs Depth Plot ^ Shallow Hazard Analysis ^ Property Plat ^ Diverter Sketch ^ Seabed Report ®Drilling Fluid Program ®20 AAC 25.050 Requirements 21. Verbal Approval: Commission Representative: Date: 22. I hereby certify that the foregoing is true and correct. Contact Brandon Peltier, 564-5912 Printed Name Robert Tirpack Title Engineering Team Leader Prepared By Name/Number: Si nature s ~ Phone 564-4166 Date ~a7 3' s~ Terrie Hubble, 56a-4628 Commission Use Onl Permit To Drill Number:oZO /~ API Number: 50- ®v?~ o~.l~~~~~ Permit Ap royal See cover letter for Date: OZ o?0 other r uirem n s Conditions of Approval: If box is checked, well may not be us explore for, test, or produce coalbed me_th/ane, gas hydrates, or gas contained shales: ,./ ~cJC~O P5 ~ ~~~ ~°~,'~ G-S Q ~cs~h~ Samples Req'd: ^ Yes l~ No ud Log Req'd: ^ Yes IJ No C \ ` HZS Measures: [Yes ^ No Di ctio Survey Req'd: Yes ^ No Other: ~G~~«-~tcN~pvCi.l ~ N.~~~<G~Tpti~~C~pS GLLC ~~Y~~fC ~v~~ v~ M~^!~ ~ ~p 2 ~ dr i~~C~JJ«c' ~ L'~ Q C`j ~ ~ ~~~ C~G. ~ ~ ZC~ ~T 1t PROVED BY THE COMMISSION Date ~~ ~ D ~ ,COMMISSIONER _- - _ _ __ Form 10-401 Revised 12/2005 Submit In Duplicate Well Name: Z-112 L~ Drill and Complete Plan Summary T e of Well (service / roducer / in'ector): Producer Tar et X Y Z TVDss Townshi Ran a Section FSL FEL Surface As-Staked 599064 5959100 Na 11N 12E 19 4305 3613 Pilot Hole Tar et Start 599285 5959210 6590 11N 12E 19 4412 3390 BHL 599264 5959462 6742 11N 12E 19 4664 3407 Horizontal Section Tar et Start 599220 5959670 6610 11N 12E 19 4873 3447 BHL 597860 5964680 6640 11N 12E 18 4621 4721 AFE Number: NA API Number: 50-029-xxxxx Estimated Start Date: January 15, 2008 O erating days: 31 Rig: Nabors 9ES TMD 13490' TVD at TD (rkb): 6723' RKB/GL 28.5'/54' RTE 82.5' Well Design: Ultra Slim Hole, Kuparuk Horizontal Producer Current Status: New drill General Well Information: Estimated BHP: 3265 si (9.2 EMW) at 6824' TVD Estimated BHT: 153 de Fat 6824' TVD Formation Markers, Hydrocarbon Zones, and Pore Pressures: Est Formation To s Est. Formation To s Uncertain Commercial Hydrocarbon Bearin Est. Pore Press. Est. Pore Press. Formation MD) (TVDss eet) (Yes/No (Psi) ( EMW) Gl 352 270 +/- 30' no SV6 1091 1005 +/- 30' no EOCU 1694 1570 +/- 30' no SV5 1777 1645 +/- 30' no 790 8.8 SV4 1910 1765 +/- 30' no 845 8.8 BPRF 1926 1780 +/- 30' no 852 8.8 SV3 2424 2230 +/- 30' no 1058 8.8 SV2 2640 2425 +/- 30' no 1147 8.8 5V1 2994 2745 +/- 30' no 1294 8.8 UG4 3354 3070 +/- 30' no 1442 8.8 UG4A 3404 31.1.5 +/- 30' no 1463 8.8 UG3 3763 3440 +/- 30' no 1612 8.8 UGl 4278 3905 +/- 30' no 1824 8.8 UG_Ma 4609 4205 +/- 30' no 1962 8.8 SB_Na 4892 4475 +/- 30' no 2085 8.8 SB_Nb 4917 4500 +/- 30' no 2097 8.8 5B Nc 4953 4535 +/- 30' no 2113 8.8 Z-112 Permit to Drill Page 1 • SB_OA 5074 4655 +/- 30' no 2168 8.8 SB_OBf Base 5430 5010 +/- 30' no 2330 8.8 Fault#1 5450 5030 +/- 100' CM2 (Colville Shales K-10) 5732 5300 +/- 50' no CM1(Colville Shales) 6513 5910 +/- 30' no THRZ 7346 6345 +/- 30' no TKLB 7764 6560 +/- 30' no K-1 7783 6570 +/- 30' no TKC4 7822 6590 +/- 30' es 3192 9.2 TKB/LCU 7899 6630 +/- 30' no 3211 9.2 TKAS 7919 6640 +/- 30' no 3216 9.2 TKA4 7958 6660 +/- 30' no 3225 9.2 TMLV 8016 6690 +/- 30' no Casing/Tubin~ Program: Hole Size Csg/ Tbg O.D. Wt/Ft Grade Connection Length (ft) Top MD/TVD RTE (ft) Btm MD/TVD RTE (ft) 42" Insulated 20" 215.5 A-53 WLD 108 GL 108/108 12-1/a" 9-5/8" 40 L-80 BTC 3260 GL 3260/3067 8 3/a" 7" 26 L-80 TC-II 5430 GL 5430/5092 8 3/a" 7" 26 L-80 BTC-M 2686 5430/5092 8116/6824 6-''/8" 4-'h" 12.6 L-80 IBT-M 5818 7672/6595 13490/6723 Tubin 4-lh" 12.6 13-Cr Vam To 2743 GL 2743/2600 Tubin 3-lh" 9.2 13-Cr Vam To 4929 2743/2600 7672/6595 Directional: Directional Plan: Schlumber er Feasibilit Stud P9 and P8b (Ref Elev: 54') Close Approach Wells: All Existing Wells pass Major Risk Scan, reference anti-collision report. Note that lanned wells Z-104 and Z-57 failed the Global scan. Maximum Hole An le: 96 de rees horizontal section Distance to Nearest Pro ert Line: 6400' ENE of PBU Boundar Distance to Nearest Well in Pool: 1.600' from Z-1.00 Mud Proeram: 12-1/a" Surface Hole Mud Pro erties S ud -Freshwater Mud Interval Densit PV YP PH Funn Vis FL 0-1926' (BPRF) 8.8-9.2 30-55 50 - 70 9.0 - 9.5 300-400 NC - 8 1926'-3260' (SV 1) 9.2-9.5 30-55 45 - 60 9.0 - 9.5 250-300 < 8.0 8-3/a" Intermediate Hole Mud Pro erties Freshwater Mud (LSND) Interval Densit PV YP PH API Filtrate MBT 3260'-7346' (THRZ) 8.8-9.2 8-14 18-24 9.0-9.5 4 - 7 < 15 7346'-8116' (TD) 11 8-14 18-24 9.0-9.5 4 - 7 < 15 6-%" Production Hole Mud Pro erties Flo-Pro NT Interval Densi PV YP PH API Filtrate LSRV 7822'-13489' (TD} 9.5 8-15 22-28 9.0-9.5 4-6 >20000 5urve and Lo in Pro ram: 12-1/a" Hole Section: Surface Gvro until MWD surveys are clean. Z-112 Permit to Drill Page 2 MWD /LWD: Dir/GR O en Hole: None Cased hole: None 8-3/a" Hole Section: Sam le as re uired b well site Geolo ist. MAD ass Schrader where slid. MWD /LWD: GR/RES/PWD/Azi-Dens/Neu/Sonic realtime O en Hole: None Cased Hole: None 6-%g" Hole Section: Sam le in 50' intervals, MAD ass after TD MWD /LWD: GR / Res / Azm Den / Neu / ABI / PeriSco e (All real time) O en Hole: None Cased Hole: None Cement Calculations: Casin Size Surface Casin - 9 5/8" 401b/ft L-80 BTC -Sin le Sta e Basis Lead: Open hole volume + 250% excess in permafrost and 40% excess below permafrost. TOC at surface Tail: Open hole volume + 40% excess + 80' shoe track. Tail TOC 950' MD above shoe. Fluid Sequence and A Tam Port collar may be located at 1,000' as a contingency for cement to surface Volume: Wash None S acer 100 bbls of MudPush II wei hied to 10 Lead 413 bbls (603 sks) 10.7 lb/ al Dee Crete Cement - 3.85 cuft/sk Tail 80 bbls (388 sks) 15.8 lb/ al Class G - 1.16 cuft/sk Tema BHST ~ 58° F from SOR Casin Size Intermediate Casin - 7" 261b/ft L-80 BTC-M x TC-II -Sin le Sta e Basis Lead: Open hole volume + 30% excess. TOC at 4100' MD, which is 500' above Ma. Tail: O en hole volume + 30% excess + 80' shoe track. Tail TOC is 800' above shoe. Fluid Sequence and Volume: Wash None i acer 50 bbl of MUDPUSH XL S acer wei hted to 11.2 Lead 112 bbl (267 sks) 11.5 LiteCrete + Latex - 2.36 cu.ft/sks Tail 31 bbl (148 sks) 15.8 Class G cement + Latex - 1.16 cu.ft/sk Temp BHST ~ 153° F from SOR Casin Size 4-'/z", 12.6#, L-80, IBT-M Production Liner Basis: Tail: Based on 5667' of open hole w/ 40% excess + 150' liner lap + 200' excess (4" DP) + 80' shoe track Cement Placement: From shoe to 7672' MD (TOL) Total Cement Volume: Lead N/A Spacer 50 bbl of MUDPUSH XL Spacer wei hted to 11.5 ppg Tail 142 bbls (663 sks) 15.8 pU~ "G" w/ Gasblok at 15.8 ppQ - 1.2 cuft/sk Surface and Anti-Collision Issues: • Surface Shut-in Wells: The closest existing surface wells are Z-OS and Z-06. • Close Approach Shut-in Wells: All wells have passed the major risk scan. No wells will require subsurface shut-in during drilling operations. Reference the Anti-collision report in the directional plan for a full list of offset well paths. Z-112 Permit to Drill Page 3 Well Control Surface hole will be drilled with a diverter. The intermediate and production hole sections will be drilled with well control equipment consisting of 5000 psi working pressure pipe rams(2), blind/shear rams, and annular preventer. This equipment is capable of handling maximum potential surface pressures. BOP equipment will be tested to 3500 psi. Anticipated surface pressures will not exceed 3000psi, therefore it will not be necessary to have two sets of pipe rams installed at all times. Diverter, BOPE and drilling fluid system schematics on file with the AOGCC. ~~ Variance ReAUest 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. To mitigate any risk involved with no flow paddle, the following steps will be taken while the flow paddle is removed from the flow line. Ensure PVT alarms are used and the pit levels are accurately monitored for any pit gain. Visually look down the riser during connections to ensure the well is not flowing. Surface Section • BOPE: • Maximum anticipated BHP: • Maximum surface pressure: • Planned BOP test pressure: • 9-5/8" Casing Test: • Kick Tolerance: • Note: See Variance Request Hydril GK, 21-1/4", 2000 psi 1,403 psi - SV 1 (8.8 ppg EMW @ 3067' TVD) 1,097 psi -Based on a full column of gas @ 0.10 psi/ft Function Test 3500 psi surface pressure test NA Intermediate Section Kick Tolerance and Integrity Testin • BOPE: Hydril, 13-5/8", 5000 psi • Maximum anticipated BHP: 3,265 psi - TKA4 (9.2 ppg EMW @ 6824' TVD) • Maximum surface pressure: 2,582 psi -Based on a full column of gas @ 0.10 psi/ft • Planned BOP test pressure: 3500 psi/250 psi Rams and 2,500 psi/250 psi Annular • 7" Casing Test: 3500 psi surface pressure test • Integrity Test - 8-3/4" hole: LOT 20' - 50' from 9-5/8" shoe • Kick Tolerance: 25bb1 KT with a 9.2 mud and a 11.Sppg LOT • Planned completion fluid: Estimated 9.Sppg Brine / 6.8 ppg Diesel Production Section Kick Tolerance and Intererity Testin • BOPE: Hydril, 13-5/8", 5000 psi • Maximum anticipated BHP: 3,218 psi - Kuparuk C (9.2 ppg @ 6,727' TVD) • Maximum surface pressure: 2,546 psi -Based on a full column of gas @ 0.10 psi/ft • Planned BOP test pressure: 3,500 psi/250 psi Rams and 2,500 psi/250 psi Annular • 41/z" Casing Test: 3,500 psi surface pressure test • Integrity Test - 6-'/s" hole: FIT 20' - 50' from 7" casing window • Kick Tolerance: Infinite with a 9.5 ppg mud with 11.5 ppg LOT • Planned completion fluid: Estimated 9.5 ppg Brine / 6.8 ppg Diesel 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. Z-112 Permit to Drill Page 4 L_ J Drilling Hazards and Contingencies POST THIS NOTICE IN THE DOGHOUSE I. Well Control /Reservoir Pressures: The Kuparuk sands are expected to be pressured @ 9.2 ppg EMW. Maintain adequate mud weight. II. Hydrates and Shallow gas: Expect Hydrate Gas Cut Mud. Gas Hydrates are present at Z-pad and have been encountered in many wells throughout the SVS, SV4 and SV3. Setting casing below the SV 1 should keep hydrate exposure from extending past the surface hole. Recommended practices and precautions for drilling hydrates should be followed in the surface hole. III. Lost Circulation /Breathing: Lost circulation is considered low at the fault crossing in the intermediate hole. Seepage losses could occur in the Schrader O-sands. Keep ECD's < 12 ppg EMW to prevent breathing on this well. Consult the LCM tree if losses are incurred. IV. Kick Tolerance /Integrity Testing: Intermediate Section Kick Tolerance and Integrity Testing • Integrity Test - 8-3/4" hole: LOT 20' - 50' from 9-5/g" shoe • Kick Tolerance: 25 bbl KT with a 9.2 ppg mud and a 11..5 ppg LOT Production Section Kick Tolerance and Integrity Testing • Integrity Test - 6-%" hole: FIT 20' - 50' from 7" casing window • Kick Tolerance: Infinite with a 9.5 ppg mud with 11.5 ppg LOT V. Stuck Pipe • Gravel beds through the Permafrost will tend to slough in when aerated (hydrate cut) mud is being circulated out. Ensure adequate mud viscosity is maintained to avoid stuck pipe situations. • Tight hole, hole packing-off, and lost returns have been encountered in previous wells on this pad. Pipe sticking tendency is possible if the HRZ shale gives problems. Back reaming at connections and good hole cleaning practices will contribute to favorable hole conditions VI. Hydrogen Sulfide H2S levels across the pad are tonically in the 10 nnm ranee based on the latest samples taken. Well Name H25 Level Date of Readin #1 Closest SHL Well H2S Level Z-OS 10 Jun-OS #2 Closest SHL Well H2S Level Z-06 10 Dec-06 #1 Closest BHL Well H2S Level Z-108 30 Ma -07 #2 Closest BHL Well H2S Level Z-100 40 Jul-07 Max. Recorded H2S on Pad/Facilit Z-100 40 Jul-07 VII. Faults There is a low risk of losses incurred when crossing the fault. Formation Where TVDss Throw Encounter Fault MD Intersect Intersect Est. Throw Direction Uncertaint Fault #1 -just below Schrader Base OBf 5448 -5030 260 SW +/- 100' MD CONSULT THE Z PAD DATA SHEET AND THE WELL PLAN FOR ADDITIONAL INFORMATION Z-112 Permit to Drill Page 5 Z-112 Drill and Complete Procedure Summary Pre-Rig Work: 1. Install the conductor and weld a landing ring for the FMC Gen 5 Wellhead. 2. If necessary, level the pad and prepare location for rig move. Prepare neighboring wells for the rig move and sim-ops production. Rig Operations: 1. MIRU Nabors 9ES. 2. Nipple up diverter spool and function test diverter. PU 4" DP as required and stand back in derrick. 3. MU 12-~/a" drilling assembly with Dir/GR and directionally drill surface hole to approximately TD with one BHA. The actual surface hole TD will be below the SV 1. An intermediate wiper trip to surface will be performed prior to exiting the permafrost. 4. Run and cement the 9-5/S", 40.0-1b/ft, L-80, BTC surface casing back to surface. A TAM Port Collar should be on location as a contingency; to be run in the casing string only if hole conditions dictate. Bump plug and ensure that floats hold. Test the 9 s/8" casing to 3,500 psi for 30 minutes. 5. ND diverter spool and NU casing /tubing head. NU BOPE and test to 3,500 psi. 6. MU 8 3/a" Vortex drilling assembly with Dir/GR/Res/PWD/Azi-Den/Neu/Sonic (realtime) and RIH to float collar. Circulate and condition cement contaminated mud. Displace over to new 8.8 ppg LSND mud. Drill new formation to 20' below 9 5/8" shoe and perform LOT. 7. Drill to ± 200' above the HRZ, ensure mud is conditioned and weighted to 1 1 ppg and perform short trip as needed. Ensure pre-reservoir meeting is held highlighting kick tolerance and detection prior to entering the HRZ and Kuparuk. 8. Drill ahead to target TD, (below top TMLV). Circulate and condition fluid. 9. Run the 7", 26-1b/ft, L-80, BTC-M x TC-II casing and cement in 1 stage. Bring TOC within 1000' of the surface shoe. Bump plug and ensure that float holds. Pressure test casing to 3500 psi for 30 minutes. 10. MU and RIH w/ 7" Whipstock assembly. Hang 4.5" space-out tubing below whipstock and set whipstock such that window top is at the top of the Kuparuk C4. 11. Displace the casing with 9.5 ppg Flo-pro NT mud. Mill Window and dri1120' of new formation. Perform FIT test. POOH and LD milling assembly. 12. MU 6-'/s" build section BHA with MWD / GR / Res /Den / Neu /ABI (All real time). Build to horizontal. POOH. 13. MU 6-''/8" RSS drilling assembly with MWD / GR / Res /Den / Neu /ABI /Periscope (All real time). Drill ahead in Kuparuk C sands to TD. 14. Run 4-'/z", 12.6-Ib/ft, L-80, IBT-M solid liner. There will be 1.50' of overlap into the 7" intermediate casing. Cement liner as directed. Set liner top packer. Release from liner and displace well to filtered 9.5 ppg brine and POOH. Test liner to 3500 psi. 15. PU DPC guns and RIH w/ ~3500of 2-1/z" (or 2-7/8" depending on availability) Omega PJ 6 spf, 60° phasing perf guns. Tag PBTD for depth control. 16. Run 4-lh", 12.6-1b/ft, 13-Cr, Vam Top x 3-'h" 9.2-1b/ft, L-80 x 13-Cr, Vam Top completion w/ Halliburton pressure gauge. RILD. Set packer and test tubing and annulus to 3,500 psi for 30 minutes. 17. Shear DCK valve. Install TWC. 18. Nipple down the BOPE. Nipple up and test the double master valve to 5,000 psi. Remove TWC. 19. RU hot oil truck. Freeze protect the well. Install BPV in tubing hanger. Install a VR plug in the 7"x 4-'/x" annulus valve and secure the well. Ensure that IA/OA are both protected with two barriers. Rig down and move off. Post-Rig Work: 1. Install tree with electric valve. 2. R/U Slickline and pull ball and rod / RHC. 3. Replace the DCK shear valve with a dummy GLV. 4. Pull dummy valves and replace with gas lift valves. 5. Pull VR plug. Z-112 Permit to Drill Page 6 WELLHEAD = FMC ACTUATOR = WA KB. ELEV BF. ELEV = KOP = 500 Max Angle = 96 ~ 8067 Datum MD = 20" CONDUCTOR Datum TV D = 9-5/8" CSG, 40#, L-80 BTC, ID = 8.835" 321 4-1/2" TBG, 12.6#, 13-Cr, VT, .0152 bpf, ID= 3:958" Z ~ 112 I SA~ NOTES: *""CHROME TBG** 108' ~ TBD H9-5/8" TAM PORT COLLAR TBD 4-1 /z° HES X NIP, ID = 3.813" 0' TBD 4-1/2" X 3-1/2" XO,ID = 2.992" I TBD 1 7" CSG, 26#, L-80 TCII, :0383 bpf,1D = 6.276" H TBD Minimum ID = 2.813" ~ xxxx' 3-1 /2" XD DURO SLIDING SLEEVE 3-1/2" TBG, 9.2#, 13CR-80, .0087 bpf, ID= 2.992° I~ 7672' ~7" BKR WHIPSTOCK ~ TKC4 7° HES ¢sv TBD CSG, 26#, L-80, BTGM, .0383 bpf, ID = s.27 8118' PERFORATION SUMMARY REF LOG: LWD ON A NGLE AT TOP PERF: Note: Refer to Production DB for historical pert data SQE SPF INTERVAL Opn/Sqz DATE 2-1/2" 6 O ST MD TV D DEV TYPE V LV LATCH PORT DIATE 6 2600 TBD 5 3400 . TBD 4 4100 TBD 3 4800 TBD 2 5500 TBD 1 TBD TBD TBD 3-1/2" SYMPHONY GAUGE CARRIER TBD 3-1/2" XD DURO SLIDING SLV., ID = 2. TBD 3-1/2" HES X NIP, ID= 2.813" ``~B~ 7" X 4-1/2" BKRS-3 PKR, ID = 3.875" TBD 3-1/2" HES X NIP,ID = 2.813" `~~B~ 3-1/2" HES X NIP,ID = 2.813" TBD 7" X 5" BKR ZXP PKR & LNR HGR w /TIEBACK SLV, ID = 4.410" TBD 1~4-1l2" WLEG, ID= 4.000" 7" MARKER JT xxx' W/ RA TAG PBTD TBD 4-1/2" LNR, 12.6 #, L-80 IBT-M, ID= 3.958" 13489' XXX' 7"MARKERJT 1 W/ RA TAG DIATE REV BY OOMMENTS DIATE REV BY COMMENTS AURORA UNIT 10/30/07 BJP Proposed Completion WELL: Z-11.2 PERMff No: API No: SEC TWP RGE NSL FEL BP Exploration (Alaska) XXX' -17" MARKER JT W/ RA TAG MILLEDOUTWINDOW (7") TKC4-XXXX Z-112PB1 (P8b1 Pro a~ SchlumherAer Report Date: October 16, 2007 Survey I DLS Computation Method: Minimum Curvature / Lubinski Client: Field: BP Exploration Alaska Prudhoe Ba Unit - WOA Vertical Section Azimuth: ~ Vertical Section Ori in: ~ 350.000° N 0.000 ft, E 0.000 ft Structure I Slot: Z-PAD / Z-112 ~ f ~ ~ TVD Reference DaWm: Rotary Table Well: ~ Plan Z-112 (5.5) ~~' q TVD Reference Elevation: 82.50 ft relative to MSL Borehole: Plan Z-112PB1 ~® Sea Bed I Ground Level Elevation: 54.00 ft relative to MSL UWVAPI#: 50029 Magnetic Declination: 23.122° Survey Name 1 Date: Z-112PB1 (P8b) /October 16, 2007 Total Field Strength: 57644.891 nT Tort 1 AHD 1 DDI I ERD ratio: 109.801 ° 13571.22 ft / 5.669 / 0.523 Magnetic Dip: 80.860° Grid Coordinate System: NAD27 Alaska State Planes, Zone 04, US Feet Declination Date: February 16, 2008 Location LaUlong: N 70.29770396, W 149.19776788 Magnetic Declination Model: BGGM 2007 Location Grid NIE YIX: N 5959100.000 ftUS, E 599063.500 ftUS North Reference: True North Grid Convergence Angle: +0.75527270° Total Corr Mag North a True North: +23.122° Grid Scale Factor: 0.99991115 Local Coordinates Referenced To: Well Head s Comments Measured Inclination Azimuth Sut-Sea TVD TVD Vertical NS EW Gravity DLS Directional Northing Easting Latitude Longitude Depth Section Tool Face Difficulty ft de de ft ft ft ft ft de de 100 ft Index ftUS ftUS Klt u.uu U.VV liSU.UU -tfZ.bU U.UU U.UU U.UU U.UU -- U.UU U.UU bybylUU.UU b99U63.5U N /U.Zy//UJy6 W 14y.1`J//liRStf G1 352.50 0.00 180.00 270.00 352.50 0.00 0.00 0.00 --- 0.00 0.00 5959100.00 599063.50 N 70.29770396 W 149.19776788 KOP Crv 1.5/100 500.00 0.00 180.00 417.50 500.00 0.00 0.00 0.00 HS 0.00 0.00 5959100.00 599063.50 N 70.29770396 W 149.19776788 Crv 2.5/100 600.00 1.50 180.00 517.49 599.99 -1.29 -1.31 0.00 HS 1.50 0.29 5959098.69 599063.52 N 70.29770039 W 149.19776788 700.00 3.50 180.00 617.39 699.89 -5.58 -5.67 0.00 HS 2.00 1.30 5959094.33 599063.57 N 70.29768847 W 149.19776788 Crv 2.5/100 800.00 5.50 180.00 717.07 799.57 -13.31 -13.52 0.00 15.42E 2.00 1.87 5959086.49 599063.68 N 70.29766704 W 149.19776788 900.00 7.94 175.18 816.38 898.88 -24.91 -25.19 0.58 10.63E 2.50 2.31 5959074.82 599064.41 N 70.29763514 W 149.19776318 1000.00 10.41 172.63 915.10 997.60 -40.81 -41.03 2.32 8.11 L 2.50 2.64 5959059.01 599066.36 N 70.29759187 W 149.19774910 SV6 1091.77 12.68 171.15 1005.00 1087.50 -59.16 -59.20 4.93 6.67E 2.50 2.88 5959040.87 599069.21 N 70.29754223 W 149.19772795 1100.00 12.88 171.05 1013.03 1095.53 -60.98 -61.00 5.21 6.56E 2.50 2.90 5959039.08 599069.52 N 70.29753731 W 149.19772567 1200.00 15.37 169.97 1110.00 1192.50 -85.39 -85.07 9.26 5.52E 2.50 3.13 5959015.07 599073.88 N 70.29747156 W 149.197 1300.00 17.86 169.19 1205.81 1288.31 -113.98 -113.19 14.44 4.77E 2.50 3.32 5958987.02 599079.43 N 70.29739474 W 149.1976 1400.00 20.35 168.59 1300.30 1382.80 -146.70 -145.30 20.76 4.20E 2.50 3.48 5958955.00 599086.17 N 70.29730700 W 149.19759976 1500.00 22.85 168.12 1393.27 1475.77 -183.50 -181.35 28.20 3.76E 2.50 3.63 5958919.05 599094.09 N 70.29720852 W 149.19753953 1600.00 25.34 167.73 1484.55 1567.05 -224.29 -221.27 36.75 3.41 L 2.50 3.77 5958879.25 599103.16 N 70.29709947 W 149.19747033 End Crv 1600.68 25.36 167.73 1485.16 1567.66 -224.58 -221.55 36.81 -- 2.50 3.77 5958878.97 599103.22 N 70.29709869 W 149.19746984 EOCU 1694.56 25.36 167.73 1570.00 1652.50 -264.76 -260.85 45.35 -- 0.00 3.84 5958839.80 599112.28 N 70.29699135 W 149.19740065 SV5 1777.56 25.36 167.73 1645.00 1727.50 -300.28 -295.58 52.91 --- 0.00 3.90 5958805.17 599120.29 N 70.29689645 W 149.19733949 SV4 1910.36 25.36 167.73 1765.00 1847.50 -357.11 -351.16 64.99 --- 0.00 3.97 5958749.76 599133.11 N 70.29674462 W 149.19724164 Base Perm 1926.96 25.36 167.73 1780.00 1862.50 -364.22 -358.11 66.50 --- 0.00 3.98 5958742.83 599134.71 N 70.29672564 W 149.19722941 SV3 2424.94 25.36 167.73 2230.00 2312.50 -577.33 -566.52 111.83 -- 0.00 4.19 5958535.05 599182.77 N 70.29615627 W 149.19686248 SV2 2640.74 25.36 167.73 2425.00 2507.50 -669.68 -656.83 131.46 --- 0.00 4.26 5958445.02 599203.60 N 70.29590954 W 149.19670348 WeIlDesign Ver SP 2.1 Bld( doc40x_100) Z-112\Plan Z-112 (5.5)\Plan Z-112P61~Z-112P61 (P8b) Generated 10/16/2007 3:39 PM Page 1 of 3 Comments Measured Inclination Azimuth Sub-Sea ND NO Vertical NS EW Gravity DLS Directional Northing Easting Latitude Longitude Depth Section Tool Face Difficulty R de de fi ft fi ft ft de de 100 fi Index fiUS ftUS JV7 9-5/8" Csg Pt UG4 UG4A UG3 UG1 Crv 4/100 Ma Na Nb Nc OA End Crv Crv 4/100 OBf Base Fault #1 CM2 CM1 End Crv Lyy4.ifd Lb.3ti 7(i/. /3 L/4b. UU L82/.5U -821.L3 3260.45 25.36 167. 73 2985. 00 3067. 50 -934. 90 3354.52 25.36 167. 73 3070. 00 3152. 50 -975. 15 3404.32 25.36 167. 73 3115. 00 3197. 50 -996. 46 3763.97 25.36 167. 73 3440. 00 3522. 50 -1150. 38 4278.56 25.36 167. 73 3905. 00 3987. 50 -1370. 60 4538.54 25.36 167 .73 4139 .92 4222 .42 -1481 .86 4600.00 22.90 167 .46 4196 .01 4278 .51 -1506 .97 4609.74 22.51 167. 41 4205. 00 4287. 50 -1510. 73 4700.00 18.91 166 .87 4289 .41 4371 .91 -1542 .60 4800.00 14.92 165 .98 4385 .07 4467 .57 -1571 .63 4892.34 11.24 164. 62 4475. 00 4557. 50 -1592. 45 4900.00 10.93 164 .47 4482 .51 4565 .01 -1593 .92 4917.79 10.22 164. 08 4500. 00 4582. 50 -1597. 17 4953.28 8.81 163. 11 4535. 00 4617. 50 -1603. 00 5000.00 6.96 161 .25 4581 .28 4663 .78 -1609 .35 5074.07 4.06 154. 84 4655. 00 4737. 50 -1616. 32 5100.00 3.07 149 .76 4680 .88 4763 .38 -1617 .85 5200.00 1.54 33 .42 4780 .83 4863 .33 -1619 .39 5300.00 5.23 1 .65 4880 .64 4963 .14 -1613 .95 5400.00 9.18 356 .55 4979 .84 5062 .34 -1601 .55 5420.60 10.00 356 .00 5000 .15 5082 .65 -1598 .14 5430.60 10.00 356 .00 5010 .00 5092 .50 -1596 .41 5430. 61 10. 00 356. 00 5010.01 5092. 51 -1596.41 5450. 94 10.81 356. 00 5030. 00 5112. 50 -1592. 76 5500 .00 12. 78 356 .00 5078 .02 5160 .52 -1582 .79 5600 .00 16. 78 356 .00 5174 .70 5257 .20 -1557 .43 5700 .00 20. 78 356 .00 5269 .36 5351 .86 -1525 .43 5732. 92 22. 09 356. 00 5300. 00 5382. 50 -1513. 46 5800 .00 24. 78 356 .00 5361 .54 5444 .04 -1486 .93 5900 .00 28. 78 356 .00 5450 .80 5533 .30 -1442 .14 6000 .00 32. 78 356 .00 5536 .70 5619 .20 -1391 .26 6100 .00 36. 78 356 .00 5618 .82 5701 .32 -1334 .55 6200 .00 40. 78 356 .00 5696 .77 5779 .27 -1272 .28 6300 .00 44. 78 356 .00 5770 .15 5852 .65 -1204 .75 6400 .00 48. 78 356 .00 5838 .62 5921 .12 -1132 .29 6500 .00 52. 78 356 .00 5901 .85 5984 .35 -1055 .26 6513. 56 53.32 356. 00 5910. 00 5992. 50 -1044. 49 6600.00 56.78 356.00 6655.48 59.00 356.00 WeIlDesign Ver SP 2.1 Bld( doc40x_100 ) -8U5.U4 T63.69 --- 0.00 4.35 b9b8L9/.L6 -916.19 187.86 --- 0.00 4.40 5958186.45 -955.56 196.43 -- 0.00 4.42 5958147.20 -976.40 200.96 --- 0.00 4.43 5958126.42 -1126.92 233.69 --- 0.00 4.50 5957976.36 -1342.28 280.52 --- 0.00 4.57 5957761.65 -1451.09 304.18 177.52E 0.00 4.61 5957653.18 -1475.63 309.58 177.27E 4.00 4.66 5957628.71 -1479.30 310.40 177.23E 4.00 4.66 5957625.05 -1510.42 317.49 176.72E 4.00 4.72 5957594.04 -1538.70 324.29 175.87E 4.00 4.78 5957565.85 -1558.91 329.55 174.55E 4.00 4.83 5957545.71 -1560.33 329.94 174.40E 4.00 4.84 5957544.30 -1563.47 330.83 174.01E 4.00 4.84 5957541.17 -1569.10 332.48 173.06E 4.00 4.86 5957535.56 -1575.21 334.43 171.21 L 4.00 4.88 5957529.48 -1581.83 336.99 164.83E 4.00 4.91 5957522.89 -1583.26 337.73 159.77E 4.00 4.92 5957521.47 -1584.45 339.82 43.46E 4.00 4.96 5957520.31 -1578.77 340.69 11.72E 4.00 4.99 5957526.00 -1566.25 340.34 6.66E 4.00 5.02 5957538.52 -1562.82 340.12 --- 4.00 5.03 5957541.94 -1561.09 340.00 HS 0.00 5.03 5957543.67 -1561.09 340.00 HS 4.00 5.03 5957543.67 -1557.43 339.74 HS 4.00 5.03 5957547.33 -1547.42 339.04 HS 4.00 5.05 5957557.32 -1521.99 337.26 HS 4.00 5.08 5957582.73 -1489.88 335.02 HS 4.00 5.12 5957614.80 -1477.88 334.18 HS 4.00 5.13 5957626.78 -1451.27 332.32 HS 4.00 5.15 5957653.36 -1406.34 329.17 HS 4.00 5.18 5957698.25 -1355.31 325.60 HS 4.00 5.22 5957749.22 -1298.42 321.62 HS 4.00 5.25 5957806.05 -1235.96 317.25 HS 4.00 5.29 5957868.44 -1168.23 312.51 HS 4.00 5.32 5957936.10 -1095.55 307.42 HS 4.00 5.36 5958008.69 -1018.29 302.01 HS 4.00 5.39 5958085.87 -1007.48 301.26 HS 4.00 5.40 5958096.67 599L3/./8 N /U.29bbU4(ib W 749.19644257 599263.41 N 70.29520098 W 149.19624690 599272.49 N 70.29509344 W 149.19617760 599277.29 N 70.29503650 W 149.19614091 599312.00 N 70.29462528 W 149.19587594 599361.66 N 70.29403693 W 149.19549686 599386.75 N 70.29373968 W 149.19530535 599392.47 N 70.29367264 W 149.19526168 599393.34 N 70.29366261 W 149.19525506 599400.84 N 70.29357760 W 149.19519767 599408.01 N 70.29350034 W 149.1951 599413.54 N 70.29344512 W 149.1951 599413.95 N 70.29344125 W 149.19509683 599414.88 N 70.29343266 W 149.19508967 599416.61 N 70.29341728 W 149.19507628 599418.64 N 70.29340060 W 149.19506049 599421.28 N 70.29338250 W 149.19503979 599422.04 N 70.29337859 W 149.19503380 599424.14 599424.94 599424.43 599424.16 599424.02 599424.02 599423.71 599422.88 599420.77 599418.10 599417.10 599414.89 599411.15 599406.91 599402.18 599396.98 599391.35 599385.31 599378.88 599377.98 N 70.29337534 W 149.19501688 N 70.29339086 W 149.19500981 N 70.29342507 W 149.19501264 N 70.29343443 W 149.19501445 N 70.29343916 W 149.19501543 N 70.29343917 W 149.19501543 N 70.29344917 W 149.19501750 N 70.29347650 W 149.19502316 N 70.29354599 W 149.19503755 N 70.29363369 W 149.19505572 N 70.29366648 W 149.1950 N 70.29373917 W 149.19507 58 N 70.29386192 W 149.19510302 N 70.29400134 W 149.19513192 N 70.29415675 W 149.19516413 N 70.29432739 W 149.19519950 N 70.29451243 W 149.19523785 N 70.29471098 W 149.19527901 N 70.29492205 W 149.19532277 N 70.29495159 W 149.19532889 5959.51 6042.01 -974.04 -936.82 296.31 HS 4.00 5.43 5958167.26 599372.11 N 70.29514464 W 149.19536892 5989.01 6071.51 -927.30 -889.94 293.03 --- 4.00 5.45 5958214.08 599368.21 N 70.29527270 W 149.19539547 Z-112\Plan Z-112 (5.5)\Plan Z-112PB1\Z-112PB1 (P8b) Generated 10/16/2007 3:39 PM Page 2 of 3 Comments Measured Inclination Azimuth Sub-Sea ND ND Vertical NS EW Gravity DLS Directional Northing Easting Latkude Longitude Depth Section Tool Face Difficulty ft de de k k k k k de de 100 ft Index kUS kUS I f1KL /J40.J`J D`J.VU 3UO.VU 0340.VV U4Z/AU -JJif.ltf -ZyJ.UJ Z07.U/ -- U.VV OAO OybiliSV4.J4 O`JyJ7•J.UU IV /U.ZJOift3/U4 W74`J.7yJ/JV7y TKLB 7764.01 59.00 356.00 6560.00 6642.50 17.65 57.89 226.70 -- 0.00 5.62 5959160.87 599289.39 N 70.29786211 W 149.19593227 K1 7783.42 59.00 356.00 6570.00 6652.50 34.20 74.50 225.54 -- 0.00 5.63 5959177.45 599288.01 N 70.29790747 W 149.19594166 Z-112PB1 Tgt 7822.25 59.00 356.00 6590.00 6672.50 67.30 107.70 223.21 --- 0.00 5.63 5959210.62 599285.26 N 70.29799818 W 149.19596046 TKC4 7822.27 59.00 356.00 6590.01 6672.51 67.32 107.72 223.21 --- 0.00 5.63 5959210.64 599285.25 N 70.29799823 W 149.19596047 TKB/LCU 7899.92 59.00 356.00 dela 6712.50 133.51 174.11 218.57 --- 0.00 5.64 5959276.96 599279.74 N70.29817961 W149.19599804 TKAS 7919.33 59.00 356.00 6640.00 6722.50 150.06 190.71 217.41 --- 0.00 5.64 5959293.54 599278.36 N 70.29822496 W 149.19600744 O WC 7948.46 59.00 356.00 6655.00 6737.50 174.89 215.61 215.67 --- 0.00 5.65 5959318.42 599276.29 N 70.29829300 W 149.19602153 TKA4 7958.17 59.00 356.00 6660.00 6742.50 183.16 223.92 215.09 --- 0.00 5.65 5959326.71 599275.60 N 70.29831568 W 149.19602623 TMLV 8016.41 59.00 356.00 6690.00 6772.50 232.82 273.72 211.61 -- 0.00 5.66 5959376.46 599271.46 N 70.29845174 W 149.19605442 TD / 7" Csg Pt 8116.41 59.00 356.00 6741.50 6824.00 318.07 359.23 205.63 -- 0.00 5.67 5959461.88 599264.35 N 70.29868535 W 149.1961 Legal Description: Northi ng (Y) [ftUS] Easting (X) [ftUS] Surface : 4305 FSL 3614 FEL S19 T11 N R12E UM 5959100.00 599063.50 Target : 4413 FSL 3390 FEL S19 T11 N R12E UM 5959210.62 599285.26 TD / BHL : 4664 FSL 3407 FEL S19 T11 N R12E UM 5959461.88 599264.35 WeIlDesign Ver SP 2.1 Bld( doc40x_100) Z-112\Plan Z-112 (5.5)\Plan Z-112PB1\Z-112P61 (P8b) Generated 10/16/2007 3:39 PM Page 3 of 3 ~" Z-112P61 (P8b) FIELD Prudhoe Bay Unit - WOA STRUCTURE Z-PAD Magrerc Pa,alnal-s sanaee Lwafion r9no3] nla,w slab Planes mne ga us feel Ml:~llanaea: MoUel BGGM 2001 Dlp 6066]' Date February 16. 3008 Lal 1]St ]3C nnmg 595910000 MIS GM GOnv: .0.!553]3]0' skt Z-1 ;1 ND ReI. Rotary Table 16350 ~1 above MSLI Alag Dec. •23'33` Fs 5]66a 9nT Lon WIra9:t 5t 96a Easgtq 599068.5011U5 scale fact. 0.99931 t1a81 Plan. Z-112PB11PBb1 Srvy Dale October t6. 100] -1600 -800 0 800 0 800 1600 2400 O 0 °0 3200 C 0) O7 U 0 •- 4000 4800 5600 6400 KOP Crv 1.SN00 Crv 2.51100 Crv 2.51100 ~~ End Crv O~U ::f::i::i::z::z::i::i::ini[lilli ll illinitl^lli::i:: t:: •::z/ ~PPrm ::ztli[:i::i::i::i::i::z:: i:li:lit:i::i:: i:: i::z:: i:: it .. -..-.. -.. _ .. _.. _.. r..-..~..~..-..~..~..-..-..~..~.. .-..-..-..-..-..y..-..-..~..-..~..-..-..-.1-..-..-..-.. _.. _.. _..-. ~~/3 -..-..-..-..-..-. -..-..-.. _..-..-..-..- V7 .-..~..-..-..-..-..- .-..-..-..-..~..-..-..~ -.-..-..-..-..-..-..-. 9-518" Csg Pt ':~.»:.~::_.._' -:._:»:::.:_::_ ~ad : _.:_.:_::=.rte-:r~~.._:._=..:..:.... -•j- - ~ - - -.~..:1 -..-..-..-..-..-. - -..-..-..- U(r3. ..- - -..-..-..-..-..-..-.. ..-..-..-..-..~..-..-..- -..-..-..-..-..-..-..-. ... -. ....-.. ~._ ........... ~..tw.,....R .... ..............aw.w.wwaiw..w........a...a........aw..w.i-...[...a..........R.,R,.R... . Orv 41100w End Crv ... _.._.. _.._ _ )~~::x::S::x::x::x::t::x::x::i::x::x::x::x::x::x::x::xDx::x::x::x::x::x::x::x::x::x::x::x::x::=::_~ Crv 41100 -..-..-..-..-..-..- .~2.-..-..-..-..-..- ~..-..-..-..-..-..-..- .-..-..-..-..-..-..-..~ - .-..-..-..-..-..-..-. End Crv Z-112P81 Tgt _: /TD l 7" Csg Pt ::ett:~::^nr.:^:antissuutnnueuuuwutitta:t~uttt~uatutuu~n~:. ::xn~tntt~ti^:ts:uuenets~::er:a:a~ 0 800 1600 2400 3200 4000 4800 5600 6400 -1600 -800 0 800 Vertical Section (ft) Azim = 350°, Scale = 1(in):800(ft) Origin = 0 N/-S, 0 E/-V ~~ ~ • ~~ ,ELL Z-112P61 (P8b) FIELD Prudhoe Bay Unit - WOA STRUCIDRE Z-PAD M1laq~w4c Parameters $IIbdC9 Lwv~wn NFD3] Naska Slade PNnes. Iore 0C. US feat AMSCeIMiweus MMeI BGGM 300] Dip _ Date February `6. 3006 lal NIO +]Si ]]~ nbng 5959+0000 M1US GM GOnv b]553I3]0' SM. Z-~'2 ND ReI Rciary Table (62.50 Aabave MSLI Mag Dec -2J 633' FS. W.9 nT lnn. W1i91151.961 Ealug. 59906)50 MIS Srak Fact 05999t1ta6'~ pWn. Z-1 t3PB11p6bi Srvy Date. October tfi. 300] -500 -250 0 250 500 750 n n n Z 0 N C I I d l9 U Cn v v v 250 0 -250 -500 -750 -1000 -1250 -1500 TD 17" Csg Pt ~ Z-112P81'(Ptib) _ Z-112P61 Tgt RTE - KOP Crv 1.51100 i Crv 2.51100 Crv 2.SI100~ _ .~_ ..:.. End Grv_.... _. ._ ................. ........... _._.....------....-:. - crv aloo 1 Z-112PB1 Fault 1 -500 -250 0 250 500 750 «< W Scale = 1(in):250(ft) E »> 250 0 -250 -500 -750 -1000 -1250 -1500 Field: Prudhoe Ba~• Site: PB Z Pad Nell: Plan Z-112 (5.5) Wellpath: Plan Z-112PB1 z ,~~~-~~~ ~.3ov~~;~~ -900 .sou -300 0 300 s0o 900 Plan Z-112 (5.5)/Plan Z-112PB1 BP Alaska Anticollision Report Company: BP Amoco Date: 10/1:6/2007 Time: 15:44:16 Puge: 1 Field; Prudhoe Bay...,. Reference Site: PB Z Pad Co-ordinate(NE)Reference: Well: Plan Z-112 (5.5), True North Reference Well: Plan Z-112 (5.5) Vertical.{TVD) Reference: Z-112 Plan 82.5 Reference Wellpath: Plan Z-112P61 ' Db: Oracle __ - - !, GLOBAL SCAN APPLIED: All wellpaths within 200'+ 100/1000 of reference -There are [Lti'Fp6aeclls in thisltliidipal Plan & PLANNED PROGRAM Interpolation Method: MD Interval: 5.00 ft Error Model: ISCWSA Ellipse Depth Range: 28.50 to 8116.41 ft Scan Method: Trav Cylinder North ~~ Maximum Radius: 1008.79 ft Error Surface: Ellipse + Casing -- _ II Survey Program for Definitive Wellpath - ~I~ Date: 9/13/2007 Validated: No Version: 4 Planned From To Survey 'I'oolcode Tool Name ~ ft ft '~, 28.50 1000.00 Planned: Plan #8 V1 GYD-GC-SS Gyrodata gyro single shots 1000.00 2000.00 Planned: Plan #8 V1 MWD MWD -Standard 1000.00 3230.00 Planned: Plan #8 V1 MWD+IFR+MS MWD +IFR + Multi Station ', 3230.00 8116.41 Planned: Plan #8 V1 MWD+IFR+MS MWD +IFR + Multi Station Casing Points MD TVD Diameter Hole Size Name ft ft in in 3288.12 3092.50 9.625 12.250 9 518" 8116.41 6824.00 7.000 8.750 7" ~~ Summary <________.____.~~_ Offset Wellpath ---- ---------> Reference Offset Ctr-Ctr No-Go AUowable Site Well Wellpath MD MD Distance Area Deviation 'Warning ft ft ft ft_ ft PB Z Pad -Exp V2 2~lan Ivi Z-41 (SC) Plan Z-41 V2 Plan: Pla 2907.41 2910.00 509.60 60.60 449.00 Pass. Major Risk PB Z Pad -Exp V2 2~lan Ivi Z-55 (SB) Plan Z-55 V2 Plan: Pla 7148.60 6365.00 142.58 84.27 58.31 Pass: Major Risk PB Z Pad -Exp V2 2~lan Sch Z-200 (SE ) Plan Z-200 V1 Plan: PI 4524.51 4680.00 632.13 75.41 556.72 Pass: Major Risk PB Z Pad -Exp V3 2~lan Ivi Z-41 (SC) Plan Z-41 V1 Plan: Pla 2907.41 2910.00 509.60 60.61 448.99 Pass: Major Risk PB Z Pad -Exp V3 2d'lan Sch Z-200 (SD) Plan Z-200 V1 Plan: PI 4520.47 4670.00 629.19 75.22 553.98 Pass: Major Risk PB Z Pad Plan Z-104 (27+30) Plan Z-104 V2 Plan: PI 8115.73 6800.00 77.68 82.85 -5.18 FAIL: Major Risk PB Z Pad Plan Z-110 (30.5) Plan Z-110 V1 Plan: PI 841.49 870.00 231.58 14.54 217.04 Pass: Major Risk PB Z Pad Plan Z-112 (5.5) Plan Z-112 V5 Plan: PI 5170.00 5170.00 0.00 83.69 -83.69 FAIL: Major Risk PB Z Pad Plan Z-400 (21-35) Plan Z-400 V1 Plan: PI 1552.87 1635.00 226.84 35.23 191.61 Pass: Major Risk PB Z Pad Z-01 Z-01 V1 890.65 900.00 157.82 17.30 140.52 Pass: Major Risk PB Z Pad Z-01 Z-01AP61 V6 890.65 900.00 157.82 17.05 140.77 Pass: Major Risk PB Z Pad Z-01 Z-01AP62 V5 890.65 900.00 157.82 17.05 140.77 Pass: Major Risk PB Z Pad Z-01 Z-01AP63 V4 890.65 900.00 157.82 17.05 140.77 Pass: Major Risk PB Z Pad Z-02 Plan Z-026 V2 Plan: PI 789.07 790.00 124.66 15.31 109.35 Pass: Major Risk PB Z Pad Z-02 Z-02 V3 790.01 800.00 124.68 15.33 109.35 Pass: Major Risk ', PB Z Pad Z-02 Z-02A V1 788.09 790.00 124.65 15.30 109.35 Pass: Major Risk PB Z Pad Z-03 Z-03 V4 1038.64 1040.00 101.68 16.99 84.69 Pass: Major Risk ', PB Z Pad Z-04 Z-04 V6 752.84 765.00 53.39 12.30 41.09 Pass: Major Risk ', PB Z Pad Z-04 Z-04A V10 751.90 755.00 53.38 12.43 40.95 Pass: Major Risk PB Z Pad Z-05 Plan#3 Z-05APB1 VO Pla 729.66 740.00 18.74 11.95 6.79 Pass: Major Risk ', j PB Z Pad Z-05 Plan#4 Z-05A VO Plan: 729.66 740.00 18.74 11.95 6.79 Pass: Major Risk PB Z Pad Z-05 Z-05 V3 729.66 740.00 18.74 11.89 6.85 Pass: Major Risk PB Z Pad Z-O6 Plan#7 Z-06A V3 Plan: 690.30 700.00 18.29 11.28 7.01 Pass: Major Risk ', 'I PB Z Pad Z-06 Z-O6 V1 690.30 700.00 18.29 11.11 7.18 Pass: Major Risk ', PB Z Pad Z-07A Z-07A V1 783.17 790.00 51.66 13.72 37.94 Pass: Major Risk ', PB Z Pad Z-07 Z-07 V1 778.21 785.00 51.58 13.80 37.79 Pass: Major Risk ', ', PB Z Pad Z-08A Z-08A V1 813.36 820.00 93.83 15.33 78.49 Pass: Major Risk PB Z Pad Z-08 Z-08 V1 813.36 820.00 93.83 15.49 78.33 Pass: Major Risk ~, PB Z Pad Z-09 Plan Z-09A V3 Plan: PI 862.16 865.00 122.60 17.48 105.12 Pass: Major Risk ', PB Z Pad Z-09 Z-09 V4 860.92 875.00 122.57 17.45 105.12 Pass: Major Risk ', ', PB Z Pad Z-103 Z-103 V1 1198.43 1255.00 279.66 20.38 259.28 Pass: Major Risk ', PB Z Pad Z-103 Z-103PB1 V3 1198.43 1255.00 279.66 20.38 259.28 Pass: Major Risk ', PB Z Pad Z-103 Z-103P62 V1 1198.43 1255.00 279.66 20.38 259.28 Pass: Major Risk j PB Z Pad Z-108 Z-108 V5 499.89 500.00 33.74 8.99 24.75 Pass: Major Risk ', PB Z Pad Z-10 Z-10 V1 605.56 615.00 157.38 12.32 145.06 Pass: Major Risk PB Z Pad Z-10 Z-10A WPS V1 Plan: Z-1 601.99 605.00 157.31 12.20 145.11 Pass: Major Risk PB Z Pad Z-11 Z-11 V1 5897.37 5900.00 254.49 90.31 164.18 Pass: Major Risk ~ ~, PB Z Pad Z-11 Z-11A V3 5897.37 5900.00 254.49 90.25 164.25 I Pass: Major Risk ~ PB Z Pad Z-12 Z-12 V1 5842.31 6000.00 141.66 99.31 42.35 Pass: Major Risk PB Z Pad Z-16 Plan Z-16A V3 Plan: PI 1997.59 1935.00 604.60 56.03 548.57 Pass: Major Risk ~ PB Z Pad Z-23 Z-23 V3 8114.33 6770.00 263.49 87.19 176.30 Pass: Major Risk ~! BP Alaska Anticollision Report Company.:. BP Amoco - -- Date: 10/i6/2007 Time: _ 15:44:16 Page: 2 Field: Prudhoe Ba Y Reference tine: PB Z Pad Co-ordinate(NE) Reference: Well: Pla n Z-112 (5.5 ), True North ~ Reference WcU: Plan Z-112; (5,5) Vertical (TVD) Reference: Z-112 Plan 82.5 Reference W'edpath Plan Z-112P61 _..._ ------ _ -- - --_ --- -- -- - -- -- Db: Oracle - --I Summary < -- Offset Wellpath- ~ Reference ' Offset Ctr-Ctr No-Co Allowable -Site Well'... Welipath MD MD ' Distance Area Deviation Warning ft ft ft ft ft PB Z Pad Z-23 Z-23A V2 8114.10 6765.00 258.70 78.24 180.47 Pass: Major Risk PB Z Pad Z-23 Z-23B V7 8113.80 6765.00 258.58 77.69 180.89 Pass: Major Risk PB Z Pad Z-28 Z-28 V1 514.80 525.00 264.67 9.72 254.94 Pass: Major Risk PB Z Pad Z-29 Z-29 V1 598.95 615.00 261.33 10.27 251.06 Pass: Major Risk PB Z Pad Z-30 Z-30 V7 569.10 580.00 260.20 9.92 250.28 Pass: Major Risk PB Z Pad Z-30 Z-30A V9 568.29 570.00 260.19 9.91 250.28 Pass: Major Risk PB Z Pad Z-31 Z-31 V1 526.87 530.00 265.62 9.62 256.00 Pass: Major Risk PB Z Pad Z-33 Plan Z-336 V2 Plan: PI 370.89 380.00 289.88 8.50 281.38 Pass: Major Risk ', PB Z Pad Z-33 Z-33 V1 561.66 575.00 289.07 9.48 279.59 Pass: Major Risk ', PB Z Pad Z-33 Z-33A V1 370.89 380.00 289.88 8.33 281.55 Pass: Major Risk PB Z Pad Z-35PB1 Z-35P61 V2 839.94 845.00 232.11 13.63 218.49 Pass: Major Risk PB Z Pad Z-35 Z-35 V2 839.94 845.00 232.11 13.19 218.92 Pass: Major Risk ', PB Z Pad Z-39 Z-39 V18 1553.36 1555.00 369.77 27.18 342.60 Pass: Major Risk PB Z Pad Z-39 Z-39A V4 1553.36 1555.00 369.77 27.18 342.59 Pass: Major Risk • , FieldPrudhoe Bay Site PB Z Pad Well:Plan Z-112 (5.5) WellpathElan Z-112PB1 -3 1 3 30D 200 1D0 D 2 100 200 300 -3 1 3 0 Travelling Cylinder Azimuth (TFO+AZI) [deg] vs Centre t Z-112 (P9) Proposal Schlumberger Report Date:. October 22, 2007 Survey 1 DLS Computation Method: Minimum Curvature / Lubinski Client: Field: BP Exploration Alaska Prudhoe Ba Unit - WOA Vertical Section Azimuth: ~ Vertical Section Ori in: ~ y 350.000° N 0.000 ft, E 0.000 ft Structure 1 Slot: Z-PAD / Z-112 ~ TVD Reference Datum: Rotary Table Well: Plan Z-112 (5.5) ~' b~' TVD Reference Elevation: 82.50 ft relative to MSL Borehole: Plan Z-112 ~ Sea Bed 1 Ground Level Elevation: 54.00 ft relative to MSL UWUAPI#: 50029 Magnetic Declination: 23.124° Survey Name 1 Date: Z-112 (P9) /October 22, 2007 Total Field Strength: 57644.826 nT Tort 1 AHD 1 DDI I ERD ratio: 161.885° / 8975.65 ft / 6.464 / 1.334 Magnetic Dip: 80.860° Grid Coordinate System: NAD27 Alaska State Planes, Zone 04, US Feet Declination Date: February 15, 2008 Location LaULong: N 70.29770396, W 149.19776788 Magnetic Declination Model: BGGM 2007 location Grid NIE YIX: N 5959100.000 ftUS, E 599063.500 ftUS North Reference: True North Grid Convergence Angle: +0.75527270° Total Corr Mag North •> True North: +23.124° Grid Scale Factor: 0.99991115 Local Coordinates Referenced To: Well Head Measured Vertical Gravity Directional Comments Depth Inclination Azimuth Sub-Sea TVD TVD Section NS EW Tool Face DLS Difficulty Northing Easting Latitude Longitude ft de de H ft ft ft ft de de 1100 ft Index ftUS ftUS IOp WnIPSiOCK /iSZY.Zb 5`J.UU 30tl .UU bbyU.UU bb/Y.OU li/.3U lU/./U YY3.Y1 ti5 U.UU b.ti3 byby'L1U.tiZ 5yyZ23b.Ztl N /U.Zy/yyiSltl W 14y.lyb`J6U4b Base Whipstock 7835.25 61.08 356 .00 6596.49 6678.99 78.50 118.93 222.43 -- 16. 00 5.64 5959221.84 599284.32 N 70.29802887 W 149.19596682 Crv 21/100 7847.25 61.08 356 .00 6602.29 6684.79 88.95 129.41 221.70 HS 0. 00 5.64 5959232.31 599283.45 N 70.29805750 W 149.19597275 7860.00 63.76 356 .00 6608.20 6690.70 100.18 140.68 220.91 HS 21. 00 5.65 5959243.57 599282.51 N 70.29808829 W 149.19597912 7880.00 67.96 356 .00 6616.37 6698.87 118.33 158.88 219.64 HS 21. 00 5.67 5959261.75 599281.00 N 70.29813801 W 149.19598943 7900.00 72.16 356 .00 6623.19 6705.69 137.02 177.63 218.32 HS 21. 00 5.69 5959280.48 599279.44 N 70.29818924 W 149.19600004 7920.00 76.36 356 .00 6628.62 6711.12 156.16 196.83 216.98 HS 21. 00 5.71 5959299.66 599277.85 N 70.29824169 W 149.19601091 7940.00 80.56 356 .00 6632.62 6715.12 175.65 216.38 215.62 HS 21. 00 5.73 5959319.18 599276.22 N 70.29829508 W 149.19602197 7960.00 84.76 356 .00 6635.18 6717.68 195.37 236.16 214.23 HS 21. 00 5.74 5959338.94 599274.58 N 70.29834912 W 149.19603316 7980.00 88.96 356 .00 6636.27 6718.77 215.23 256.08 212.84 HS 21. 00 5.76 5959358.84 599272.93 N 70.29840354 W 149.19604444 Crv 10/100 7984.97 90.00 356 .00 6636.32 6718.82 220.17 261.03 212.49 36.89E 21. 00 5.76 5959363.79 599272.51 N 70.29841707 W 149.1960 8000.00 91.20 355 .10 6636.16 6718.66 235.13 276.02 211.33 36.90E 10. 00 5.77 5959378.75 599271.15 N 70.29845801 W 149.1960 8020.00 92.80 353 .90 6635.46 6717.96 255.05 295.91 209.41 36.94E 10. 00 5.78 5959398.62 599268.97 N 70.29851236 W 149.19607220 8040.00 94.40 352 .69 6634.21 6716.71 274.98 315.73 207.08 37.02E 10. 00 5.79 5959418.41 599266.38 N 70.29856652 W 149.19609107 8060.00 95.99 351 .48 6632.39 6714.89 294.88 335.46 204.34 37.13E 10. 00 5.80 5959438.10 599263.38 N 70.29862041 W 149.19611327 End Crv 8067.27 96.57 351 .04 6631.60 6714.10 302.11 342.61 203.24 -- 10. 00 5.80 5959445.23 599262.19 N 70.29863993 W 149.19612217 Crv 10/100 8214.46 96.57 351 .04 6614.75 6697.25 448.31 487.04 180.46 142.41E 0. 00 5.83 5959589.33 599237.51 N 70.29903452 W 149.19630659 8220.00 96.14 350 .70 6614.13 6696.63 453.81 492.48 179.58 142.45E 10. 00 5.83 5959594.76 599236.56 N 70.29904937 W 149.19631367 8240.00 94.55 349 .48 6612.27 6694.77 473.72 512.09 176.16 142.56E 10. 00 5.84 5959614.32 599232.88 N 70.29910295 W 149.19634142 8260.00 92.96 348 .26 6610.96 6693.46 493.68 531.67 172.30 142.64E 10. 00 5.85 5959633.85 599228.76 N 70.29915645 W 149.19637263 8280.00 91.37 347 .04 6610.21 6692.71 513.64 551.19 168.03 142.68E 10. 00 5.86 5959653.31 599224.23 N 70.29920978 W 149.19640723 Z-112 Tgt 1 8297.22 90.00 346 .00 6610.00 6692.50 530.83 567.94 164.01 141.28E 10. 00 5.87 5959670.00 599220.00 N 70.29925552 W 149.19643973 WeIlDesign Ver SP 2.1 Bld( doc40x_100) Z-112\Plan Z-112 (5.5)\Plan Z-112\2-112 (P9) Generated 10122!2007 1:58 PM Page 1 of 2 Comments Measured inclination Azimuth Subsea TVD 1yp Vertical NS EW Gravity DLS Directional Northing Easting Latitude Longitude Depth Section Tool Face Difficulty ft de de ft ft ft ft ft de de 1100 ft Index ftUS ftUS i3JUV.VV i5`J./r3 .54O.t5J bb"IU.VI bbyL. bl b33.bU 5/U.b3 1b3.34 141.LiSL IU.UU b.t5/ bybyb/L.by byyLly.Ly N /U.LyyLbL2Sy VV 14y.1yb44511 End Crv 8311.46 88.89 345.11 6610.14 6692. 64 545.03 581.73 160.46 --- 10.00 5.87 5959683.74 599216.27 N 70.29929319 W 149.19646849 Crv 10/100 10103.88 88.89 345.11 6644.89 6727. 39 2330.58 2313.62 -300.06 5.18R 0.00 6.12 5961409.26 598733.00 N 70.30402459 W 149.20019825 Z-112 Tgt 2 10115.03 90.00 345.21 6645.00 6727. 50 2341.69 2324.41 -302.92 5.50R 10.00 6.13 5961420.00 598730.00 N 70.30405404 W 149.20022139 10120.00 90.49 345.26 6644.98 6727. 48 2346.65 2329.21 -304.18 5.50R 10.00 6.13 5961424.79 598728.67 N 70.30406717 W 149.20023165 End Crv 10122.51 90.74 345.28 6644.95 6727. 45 2349.15 2331.64 -304.82 -- 10.00 6.13 5961427.21 598728.00 N 70.30407381 W 149.20023683 Crv 10/100 11267.79 90.74 345.28 6630.06 6712. 56 3490.45 3439.24 -595.77 141.23R 0.00 6.26 5962530.78 598422.50 N 70.30709965 W 149.20259414 Z-112 Tgt 3 11277.34 90.00 345.88 6630.00 6712. 50 3499.97 3448.50 -598.15 140.86R 10.00 6.26 5962540.00 598420.00 N 70.30712493 W 149.20261342 11280.00 89.79 346.05 6630.00 6712. 50 3502.62 3451.07 -598.80 140.86R 10.00 6.26 5962542.57 598419.32 N 70.30713197 W 149.20261864 End Crv 11280.69 89.74 346.09 6630.01 6712. 51 3503.31 3451.74 -598.96 --- 10.00 6.27 5962543.23 598419.15 N 70.30713378 W 149.20261998 TD / 4-1/2" Lnr 13489.63 89.74 346.09 6640.00 6722.50 5707.09 5595.89 -1129.94 --- 0.00 6.46 5964680.00 597860.00 N 70.31299126 W 149.2069 ~~ WeIlDesign Ver SP 2.1 Bld( doc40x_100) Z-112\Plan Z-112 (5.5)\Plan Z-112\Z-112 (P9) Generated 10/22/2007 1:58 PM Page 2 of 2 b~ Schlumberger WELL Z-112 (P9) FIELD Prudhoe Bay Unit - WOA STRUCTURE Z-PAD Magnellc Peramela~s e~LOCa~iun f.AD1/,uasha Sl.xe Plarws. Zone JE.USfc~.H Miscellaneous Motlel BGGM 200/ Dlp &l e6U" Dale. Fe~,uary t5. 2008 a ..., . e.._~i il'NS Gritl COnv n. i_~i ~l y Sb~ Z~~~2 ND Rar nwry TX~le 182.~U ~ew.i MSLI May Doc .[3 t2+- FS a nT Ea ~ny ul TUS Scalu Fayl J ~i«•~'" Plan Z "Z IP9~ ry Dde O u<r 22 200] 0 600 1200 1800 2400 3000 3600 4200 4800 5400 6000 >/ ~ 6600 I I N U n 7200 ! 3 Top Whipstock € t t :: ~,,. ~ :, ,:. Base Whipstock ; ~ i Crv 211100 t Crv 101100 t Z-112 Tgt 2 Z-112 Tgl 3 I End Crv ~~ Crv 101100 End Crv Crv 10/100 EnA Crv TD ~ F1Y1 Lnr - - - - - - _ - ` End Crv I I Z-112 Tgt 1 Crv 10/100 Z-112P81 (P/j) ~ t ~ t 1 ... .__._ ... ....................:..........t.. ~~~.~.,~.~.,~,.,~,~...~~..~~. i .~.....~....~~,,.~~,,........ ....,,................... .......i.:............................. t S ..,~~.,.,.,..~.,,~~.~,,,,.... ........,,.....,... i ~ ~ ~ i 0 600 1200 1800 2400 3000 3600 4200 Vertical Section (ft) Azim = 350°, Scale = 1(in):600(ft) Origin = 0 N/-S, 0 E/-V • 6000 6600 (Pg) 7200 4800 5400 • . ~' ~ • WELL Z-112 (P9) FiE LD Prudhoe Bay Unit - WOA STRUC NRE Z-PAD M,gne is Par r ! Sur ~+•: ,n ~~G2r rPlanea ton Oa US Gen zr '~ r.elN ' ne ~ McGel BGGM 20(:I Pp BO B60' pale Fobuary'S 2819 onMny 5950•0000 tUS Gn,]Cunv •01552/110' S lul Z-'•2 ND Raf Rotary TaLle iB2 YJn Jro~e MSLI Mag Dec: •2].~2a' FS 5I4:<B ni lon Eaxdq •u490fi]SO M1US 5`ale Fad 0 'a8' PMn Z-~'.2 iP9i Srry Dale Onmer 22. 2001 -2400 -1600 -800 0 800 5600 4800 4000 n n n Z ~ 3200 0 0 c m U 2400 v v v 1600 800 0 1 = Z-112P81 (P~ 5600 4800 4000 3200 -- 2400 ••- 1600 rv _ _.._....-.I 800 Tgt 1 101100 cnd Crv :rv 10/100 "rv 21/100 Base Whipstock 0 -2400 -1600 -800 0 800 «< W Scale = 1(in):800(ft) E »> BP Alaska Anticollision Report Company; BP An'lOC© - ---- -- Date: 10/22/2007 Time: 14:08:35 Page: 1 Pield: Prudhoe Bay Reference Site: PB Z Pad ~ Co-ordinate(NE:) Keferencc: Well: Plan Z-112 (5.5), True North Reference Wcll: Plan Z-112 {5.5) Vertical (TVI)) Reference: Z-112 Plan 82.5 Reference Wellpath: Plan Z-112 Db: Oracle ', GLOBAL SCAN APPLIED: All wellpaths within 200'+ 100/1000 of reference -There are 1<L~QEL~aEells in thisRltiidipal Plan & PLANNED PROGRAM Interpolation Method: MD Interval: 5.00 ft Error Model: ISCWSA Ellipse Depth Range: 28.50 to 13489.63 ft Scan Method: Trav Cylinder North Maximum Radius: 1546.11 ft Error Surface: Ellipse + Casing _ _ _ i Survey Program for Definitive Wellpath __ ', Date: 10/4/2007 Validated: No Version: 5 Planned From To Survey Toolcode Tool Name ft ft ' 28.50 1000.00 Planned: Plan #8 V1 (2) -------- -- GYD-GC-SS Gyrodata gyro single shots 1000.00 3230.00 Planned: Plan #8 V1 (2) MWD+IFR+MS MWD +IFR + Multi Station 3230.00 7822.25 Planned: Plan #8 V1 (2) MWD+IFR+MS MWD +IFR + Multi Station ', ', 7822.25 13489.63 Planned: Plan #9 V1 MWD+IFR+MS MWD +IFR + Multi Station ' Casing Points Ml) TVD Diameter Hole Size Name ft ft in in 3288.12 3092.50 9.625 12.250 9 5/8" 7822.25 6672.50 7.000 8.750 7" 13489.63 6722.50 4.500 6.750 4-1/2" Summary <__-______ Offset Wellpath -- -----> Reference Offset Ctr-Ctr No-Go Allowable 1 Site Well Wellpath MD MD Distance Area Deviation Warning ft $ ft ft ft PB Chev Tr CHEV181112 CHEV181112 V1 11972.95 7965.00 1271.81 477.87 793.94 Pass: Major Risk PB Z Pad -Exp V2 20'lan Ivi Z-41 (SC) Plan Z-41 V2 Plan: Pla 2907.41 2910.00 509.60 60.60 449.00 Pass: Major Risk PB Z Pad -Exp V2 2~lan Ivi Z-55 (SB) Plan Z-55 V2 Plan: Pla 7148.60 6365.00 142.58 84.29 58.30 Pass: Major Risk PB Z Pad -Exp V2 2~lan Ivi Z-57 (NC) Plan Z-57 V2 Plan: Pla 10759.14 7465.00 109.35 163.07 -53.72 FAIL: Major Risk ~, PB Z Pad -Exp V2 2d'lan Sch Z-200 (SE) Plan Z-200 V1 Plan: PI 4524.51 4680.00 632.13 75.41 556.72 Pass: Major Risk ', PB Z Pad -Exp V3 2~lan Ivi Z-41 (SC) Plan Z-41 V1 Plan: Pla 2907.41 2910.00 509.60 60.61 448.99 Pass: Major Risk PB Z Pad -Exp V3 20'lan Ivi Z-57 (NB) Plan Z-57 V1 Plan: Pla 10761.11 7465.00 105.69 162.39 -56.70 FAIL: Major Risk PB Z Pad -Exp V3 2d'lan Sch Z-200 (SD) Plan Z-200 V1 Plan: PI 4520.47 4670.00 629.19 75.22 553.97 Pass: Major Risk ', PB Z Pad Plan Z-104 (27+30) Plan Z-104 V2 Plan: PI 8107.96 6720.00 61.16 85.57 -24.41 FAIL: Major Risk ', PB Z Pad Plan Z-110 (30.5) Plan Z-110 V1 Plan: PI 841.49 870.00 231.58 14.54 217.04 Pass: Major Risk ', ', PB Z Pad Plan Z-112 (5.5) Plan Z-112PB1 V4 Plan: 5170.00 5170.00 0.00 83.76 -83.76 FAIL: Major Risk ', PB Z Pad Plan 2-400 (21-35) Plan Z-400 V1 Plan: PI 1548.20 1630.00 226.71 32.80 193.91 Pass: Major Risk ', PB Z Pad Z-01 Z-01 V1 890.65 900.00 157.82 17.30 140.52 Pass: Major Risk !, PB Z Pad Z-01 Z-01APB1 V6 890.65 900.00 157.82 17.05 140.77 Pass: Major Risk ', PB Z Pad Z-01 Z-01AP62 V5 890.65 900.00 157.82 17.05 140.77 Pass: Major Risk PB Z Pad Z-01 Z-01 AP63 V4 890.65 900.00 157.82 17.05 140.77 Pass: Major Risk PB Z Pad Z-02 Plan Z-026 V2 Plan: PI 789.07 790.00 124.66 15.31 109.35 Pass: Major Risk PB Z Pad Z-02 Z-02 V3 790.01 800.00 124.68 15.33 109.35 Pass: Major Risk ' ', PB Z Pad Z-02 Z-02A V1 788.09 790.00 124.65 15.30 109.35 Pass: Major Risk PB Z Pad Z-03 Z-03 V4 1038.64 1040.00 101.68 16.98 84.70 Pass: Major Risk ' PB Z Pad Z-04 Z-04 V6 752.84 765.00 53.39 12.30 41.09 Pass: Major Risk ' PB Z Pad Z-04 Z-04A V10 751.90 755.00 53.38 12.43 40.95 Pass: Major Risk PB Z Pad Z-OS Plan#3 Z-05APB1 VO Pla 729.66 740.00 18.74 11.95 6.79 Pass: Major Risk PB Z Pad Z-05 Plan#t4 Z-05A VO Plan: 729.66 740.00 18.74 11.95 6.79 Pass: Major Risk PB Z Pad Z-05 Z-05 V3 729.66 740.00 18.74 11.89 6.85 Pass: Major Risk PB Z Pad Z-06 Plan#7 Z-06A V3 Plan: 690.30 700.00 18.29 11.28 7.01 Pass: Major Risk PB Z Pad Z-06 Z-06 V1 690.30 700.00 18.29 11.11 7.18 Pass: Major Risk ', PB Z Pad Z-07A Z-07A V1 783.17 790.00 51.66 13.72 37.94 Pass: Major Risk ', PB Z Pad Z-07 Z-07 V1 778.21 785.00 51.58 13.80 37.79 Pass: Major Risk ', PB Z Pad Z-08A Z-08A V1 813.36 820.00 93.83 15.33 78.49 Pass: Major Risk PB Z Pad Z-08 Z-08 V1 813.36 820.00 93.83 15.49 78.33 Pass: Major Risk PB Z Pad Z-09 Plan Z-09A V3 Plan: PI 862.16 865.00 122.60 17.48 105.12 Pass: Major Risk PB Z Pad Z-09 Z-09 V4 860.92 875.00 122.57 17.45 105.12 Pass: Major Risk ', PB Z Pad Z-101 Z-101 V5 688.19 705.00 646.35 12.32 634.03 Pass: Major Risk PB Z Pad Z-103 Z-103 V1 1193.78 1250.00 279.59 20.19 259.40 Pass: Major Risk ', PB Z Pad Z-103 Z-103P61 V3 1193.78 1250.00 279.59 20.19 259.40 Pass: Major Risk ', PB Z Pad Z-103 Z-103P62 V1 1193.78 1250.00 279.59 20.19 259.40 Pass: Major Risk PB Z Pad Z-108 Z-108 V5 499.89 500.00 33.74 8.99 24.75 Pass: Major Risk PB Z Pad Z-10 Z-10 V1 605.56 615.00 157.38 12.32 145.06 Pass: Major Risk PB Z Pad Z-10 Z-10A WPS V1 Plan: Z-1 601.99 605.00 157.31 12.20 145.11 Pass: Major Risk BP Alaska i Anticollision Report Company: BP AMOCO Date: 1-0/22/2007 'time: 14:08:35 Page: 2 Field: Prudhoe Bay Reference Site: PB Z Pad Co-ordinate(N)E:)Reference: Well: Plan Z-112 (5.5), True North 12eference Wcll: Plan Z-112 (5.5) Vertical (1`VD)Refere nce: Z-112 Plan 82.5 Reference W'ellpath: plan Z-112 Db: Oracle Summary ' <-------- - Offset Wellpath ---- ---------> Reference Offset Ctr-Ctr Nu-Go 111owable Sftc Well Wellpath' MD Mp Distance Area Deviation Warning ft ft' ft ft ft PB Z Pad Z-11 Z-11 V1 5897.37 5900.00 254.49 90.31 164.18 Pass: Major Risk PB Z Pad Z-11 Z-11 A V3 5897.37 5900.00 254.49 90.25 164.24 Pass: Major Risk ', ', PB Z Pad Z-12 Z-12 V1 5842.31 6000.00 141.66 99.31 42.35 Pass: Major Risk ', PB Z Pad Z-13 Z-13 V3 1278.41 1280.00 479.52 19.70 459.82 Pass: Major Risk ', PB Z Pad Z-13 Z-13A V2 1277.39 1270.00 479.51 19.68 459.82 Pass: Major Risk ', PB Z Pad Z-13 Z-13AP61 V3 1277.39 1270.00 479.51 19.62 459.89 Pass: Major Risk ', PB Z Pad Z-16 Plan Z-16A V3 Plan: PI 2095.78 2035.00 605.95 51.81 554.15 Pass: Major Risk ', I ~i PB Z Pad Z-19 Z-19 V1 634.78 640.00 696.00 15.27 680.74 Pass: Major Risk ', PB Z Pad Z-21 Z-21 V3 594.32 610.00 418.61 11.17 407.44 Pass: Major Risk PB Z Pad Z-21 Z-21A V5 595.92 605.00 418.63 10.98 407.66 Pass: Major Risk ~~ PB Z Pad Z-22A Z-22A V1 624.84 635.00 446.76 9.91 436.85 Pass: Major Risk PB Z Pad Z-226 Z-226 V1 624.84 635.00 446.76 9.91 436.85 Pass: Major Risk ~' PB Z Pad Z-22 Z-22 V1 624.85 635.00 445.82 9.92 435.91 Pass: Major Risk PB Z Pad Z-23 Z-23 V3 8097.62 6700.00 241.87 85.00 156.87 Pass: Major Risk ~~ PB Z Pad Z-23 Z-23A V2 8091.90 6685.00 238.22 75.93 162.29 Pass: Major Risk PB Z Pad Z-23 Z-236 V7 8092.37 6690.00 238.27 76.01 162.26 Pass: Major Risk I~ PB Z Pad Z-27 Z-27 V1 589.70 605.00 273.48 10.42 263.06 Pass: Major Risk i~ PB Z Pad Z-28 Z-28 V1 10291.65 7405.00 209.63 141.30 68.32 Pass: Major Risk PB Z Pad Z-29 Z-29 V1 12066.07 8360.00 371.06 208.38 162.68 Pass: Major Risk ', PB Z Pad Z-30 Z-30 V7 569.10 580.00 260.20 9.92 250.28 Pass: Major Risk i PB Z Pad Z-30 Z-30A V9 568.29 570.00 260.19 9.91 250.28 Pass: Major Risk PB Z Pad Z-31 Z-31 V1 526.87 530.00 265.62 9.62 256.00 Pass: Major Risk I PB Z Pad Z-32A Z-32A V7 11005.76 7815.00 369.14 167.10 202.04 Pass: Major Risk PB Z Pad Z-326L1 Z-32BL1 V2 11011.58 7830.00 369.09 167.36 201.73 Pass: Major Risk j PB Z Pad Z-326P61 Z-326PB1 V2 11011.58 7830.00 369.09 167.36 201.73 Pass: Major Risk '~ PB Z Pad Z-326P62 Z-326PB2 V2 11011.58 7830.00 369.09 167.36 201.73 Pass: Major Risk I PB Z Pad ~ Z-326 Z-32B V2 11011.58 7830.00 369.09 167.36 201.73 Pass: Major Risk ' II ! PB Z Pad Z-32 Z-32 V2 11011.58 7830.00 369.09 167.36 201.73 Pass: Major Risk PB Z Pad Z-33 Plan Z-336 V2 Plan: PI 370.89 380.00 289.88 8.50 .281.38 Pass: Major Risk PB Z Pad Z-33 Z-33 V1 561.66 575.00 289.07 9.48 279.59 Pass; Major Risk PB Z Pad Z-33 Z-33A V1 370.89 380.00 289.88 8.33 281.55 Pass: Major Risk PB Z Pad Z-35P61 Z-35P61 V2 839.94 845.00 232.11 13.63 218.49 Pass: Major Risk PB Z Pad Z-35 Z-35 V2 839.94 845.00 232.11 13.19 218.92 Pass: Major Risk ~I PB Z Pad Z-39 Z-39 V18 1515.95 1515.00 368.93 23.69 345.24 Pass: Major Risk PB Z Pad Z-39 Z-39A V4 1515.95 1515.00 368.93 23.69 345.24 Pass: Major Risk • • FieldPrudhoe Bay Site PB Z Pad We11:Plan Z-112 (5.5) WellpathPlan Z-112 ~3 1 3 300 200 10D 0 2 1D0 2D0 300 313 n Site: PB Z Pad Drilling Target Conf.: 95% Description: Map Northing: 5959230.00 ft Map Easting :599285.00 ft Latitude: 70° 1 T52.984N Polygon X ft 1 -188.03 2 -1710.78 3 -1118.67 4 213.29 Target: Z-112 Poly Yft -227.56 5653.54 5805.77 -132.83 VPe11: Plan Z-112 (5.5) Based on: Planned Program Vertical Depth: 6620.00 ft below Mean Sea Level Local +N/-S: 127.08 ft Local +E/-W: 223.21 ft Longitude: 149° 11'45.458 W Map E ft Map N ft 599100.00 5959000.00 597500.00 5964860.00 598090.00 5965020.00 599500.00 5959100.00 '~~ 9000 8000 X000 6000 5000 x+000 0000 '' 2000 1000 __ __ _ \, 0 -I 6050000 6000000 5950000 5900000 5850000 EPA Aquifer Exemption - 40 CFR 147.102 (b)(3) 400000 500000 600000 700000 800000' Alaska Department of Natural Resources Land Administration System Page 1 of 4 • ~~,!~ 1 '-. _ 1, _ r, ~ ~ r31:~ ~ ' _ Border's Search State Cabins a~tlt~ ~ Alaska 3~~'t Case Surnar File Type: ADL_ ......€ File Number: 28262 ~ Printable Case File_Summ.a.ry See Township, Range, Section and Acreage? New search Yes No W __. ______ ~_._ LAS #enu I Case_Abstract i Case Detail ~ Land Abstract Filc: ~llL 28262 Search for St~+t~5 flat Updates Czrstomer.~ 000] 07377 BP EXPLORATION (ALASKA) INC PO BOX l 96612/900 E. BENSON BL ATTN: LAND MANAGER- ALASKA ANCHORAGE AK 995196612 Case TyFe: ''~~~ OIL & GAS LEASE COMP D~VR Unit: 780 O[L AND GAS File Location: DOG DN O[L AND GAS Cure Slcriz~s: 35 ISSUED Status Date: 08/26/1965 To[a1.lcres: 2480.000 Date Initiu~ed: OS/28/196~ Office ofPrir~uuy Responsibility: DOG DIV OIL AND CAS Lass Ti°arrsaction Date: 12/04/2006 Case ST~btype : ~,~ NORTH SLOPE Last Ti~unsuction: AA-NRB ASSIGNMF,NT APPROVED I~Iericlian: U T~nrii~hi~~ ~ U I I ti ` Range: 012E Seeti~n: I ~I Sec~i<ur , acnrs: 640 ~~~rch ,.~ , ll~~ridi~rrz: U Totii~r~,~/rr/>: Ol IN Range: 012E S'zctiorz: IS Se~~rr~~ir ~l~r<~s: ~~>~~ V~~~^icli~~u_~ ~' l nu~r~~hi~>- t~ I 1 N Range: 012E Section: I ~~ S'ection .I~~res: 601 ~It'f7ClkJll: I~ IU117L~'~ll~>: U11~ ~~~II1,~C': OJ.2E Section. 2O ~JClIC1711~~1'C,~.O4~ Legal Description 0~-2~5'-19(~ ~`'`* SALEA'OTICF_ LEC,'.-1I Df~'.SC'RIPTIO:V :,_:<r C14- ~8 TI l ~'~', R12F., C _~I 1 ', 1 ~S'. 19. 20 2.480.00 IZ-04-1969 * `:`AS',S7GN~11F.~~%T Ll'G_1L DF,SC'RIPTIOA' ~ <.r T l ! N, R I ZC. U49 http://www.dnr. state.ak.us/las/Case_Summary.efm?FileType=ADL&FileNumber=28262... 12/12/2007 Alaska Department of Natural Resources Land Administration System Page 2 of 4 SECTION 17.~ 640 ACRES SECTION 1 ~: 599 ACRES SECTION 19: 601 ACRES C'ONT_AINING 18=10 ACRES, MORE OR LESS. SEGMENT 2 -LANDS ASSIGNED T 11 N, R 12E, UM SEC'TION?0: 6-10 ACRES CONT_4ININU 6=10 ACRES, MORE OR LESS. 04-01- l97? * * * UNITIZED A1VD PA LEGAL DESCRIPTIONS TRACTS ~4 & ~~~ COIL1tiIITTED TO THE PRUDHOE 13~Y UNITAND THE OIL Rl~~t car GAS CAP P:9KTICIPATING AREAS TRACT J 4 T. I 1 ~V , R. 12 E. , U R~I. SEC. tS'. 17, 18, 19: ALL; C'ONTAININ'G 1.840 t1CRES. MOR1-; OR LESS. TRACT ~4A T 11 N.. R. 1 ? E. , U. ~l I SEC. 20::-1I_I„~ CONT~INrLUG 640 ACRES. MORE OR LESS. OZ-01-?004 ~ ~FORilL9TION OF ORION PARTICIPATNG ARE 1 I_EG~1L DESC'RIPTION* LE_~1.5'E CO.tLIIITTED LV PART TO ORIO,ti' P.ARTICIP:4TIN'G ARE:1 http://www.dnr. state.ak.us/las/Case_Summary.cfm?FileType=ADL&FileNumber=28262... 12/12/2007 Alaska Department of Natural Resources Land Administration System Page 3 of 4 PRUDHOE I3AY UNIT TRACT ~4 ORLON PARTICIPATII'~'G AREA T. 11 N., R. 12 E., UMIAT MERIDIAN, ALASKA SECTION 17: ALL, 640.00 ACRES; SECTION 18: ALL, 599. DO ACRES: SECTION 19: N2, SE4, N2SW=1, 530. SO ACRES; CONTAINING APPROXIMATELY 1, 769.50 ACRES, MORE OR LESS. PRUDNOE I3AY UNIT TR:1 CT ~ 4A ORLON PARTICIPATING AREA T. I1 ,N., R. 12 E., UMIAT ~tIERIDIAN, ALASKf1 SECTION 20: ~I LL, 640.00 ACRES; C.'O:VT.~LVLVG:~PPRO,kLlf.~ITF.I,~'h-10.~011C'RI,S'. ;190REORLE:SS. I2-01-200-~***130REALISPAE.VP<4NDED,LE_.4SEINCORPOIZATEDIN PART***`***~~ LEGAL DESCRIP TION IS AS FOLL O N'S: PRUDNOF' B.F1 Y UNIT BOREALIS' P:=~RTIC'IPATL-~ G AREA TR:-~C'T ~4 (f'.~IRTL91,) T 11:'1': , R. I ZE.. C~LII.AT .IIERIDI.~N, AL_4 S'K~ ,S`F_CTION I ?: ALL, 640.00 ACRES; SEC 170N 1 S: ALL, ~ 99.00 .~ CRES,~ SECTION 19: ALL, 601.00 ACRES; TIIIS TR4CT CONT,9INS' 1, S'40.00 ACRES. MORE OR LESS. http://www.dnr.state.ak.us/las/Case_Summary.cfm?FileType=ADL&FileNumber=28262... 12/ 12/2007 Alaska Department of Natural Resources Land Administration System Page 4 of 4 PRUDHOE BAY UNIT BOREALIS PARTICIPATING AREA TRACT SSA (PARTIAL) T.11 N. , R.12E. , UMIAT MERIDI<QN, ALASKA SECTION 20: N2, N2S2, =180.00 ACRES; 7HIS TRACT CONTAII'~'S X80.00 ACRES, ,~1ORE OR LESS. ~t"t ~ 'SiUL't1 t"'' Last updated on 12/12/2007. Not sure who to contact? Have a question about DNR? Visit the F'~~kalic Iform~f'~ar~ ~°~nt:~r. Report technical problems with this page to the VVebrt~aster. Site optimized for Netscape 7, IE 6 or above. This site also requires that all ~~~F must be' accepted. State of Alaska Natural Res€~urces LAS Home Copyright Privacy System Status - _ http://www.dnr. state.ak.us/las/Case_Summary.cfm?FileType=ADL&FileNumber=28262... 12/12/2007 • TRANSMITTAL LETTER CIiECKLIST WELL NAME ~~'~ ~ ~~~ PT1D# d?O~/ ~~D ,~ Development Service Eapioratory Stratigraphic Test Non-Conventional Well Circle Appropriate Letter /Paragraphs to be Included in Transmittal Letter CHECK ADD-ONS TEXT FOR APPROVAL LETTER WHAT (OPTIONS} 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 25.0050, ail 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 togs acquired for well SPACING The permit is approved subject to full compliance with 20 AAC EXCEPTION 25.055. Approval to perforate and produce /insect 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. Please note the following special condition of this permit: Non-Conventional production or production testing of coat bed methane is not allowed Well for (name of well) until after fCom~ Namel has designed and implemented a water well testing program to provide baseline data on water quality and quantity. SCompany Name) must contact the Commission to obtain advance approval of such water well testing ro m. 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