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Home My WebLink About207-049Ima e P~ect Well Histo File Co~r Pa e 9 J rY J XHVZE This page identifies those items that were not scanned during the initial produ~tion 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. ~~~- Q~-~ Well History File Identifier ' III III (II II I III I III I I'l ll II I IIII ) O anizin ~aone~ r9 g wo-sided (II II ^ Rescan Needed RE AN DIGITAL DATA OVERSIZED (Scannable) Color Items: Diskettes, No. ~ p Maps: ~reyscale Items: ^ Other, No/Type: p Other Items Scannable by a Large Scanner ^ Poor Quality Originals: OVERSIZED (Non-Scannable) ^ Other: ^ Logs of various kinds: NOTES: ^ Other:: BY: Maria Date: ~ ~ ~S~ Pro'ect Proofing ! II I II'III II III I I(II BY: Maria Date: 3O Q /sl ti x 30 ~ =~Q~ + ~~ = TOTAL PAGES ~ on Scanning Prepara _ _ (Count does not include cove sheet) BY: _ Maria Date: rJ/ 3D IOq ~S~ ~ Production Scanning Stage 1 Page Count from Scanned File: (count aoes ~nciude cover sneet) Page Count Matches Number in Scanning Preparation: ~ YES NO BY: Maria Date: 3O D ~S~ 1~ 1~ 7 ~ Stage 1 If NO in stage 1, page(s) discrepancies were found: YES NO BY: Maria Date: ~S~ Scanning is complete at this point unless rescanning is required. I) I II II II I(I I) I I III ReScanned III II'I~I~II~ ~I~II BY: Maria Date: ~S~ Comments about this file: Quality Checked III II~III III II'I III --~=- 10/6/2005 Well History File Cover Page.doc ,. i m~ Y u ~:; F t <., ~, MICROFILMED 6/30/2010 DO NOT PLACE ANYNEW MATERIAL.. UNDER THIS~PAGE C:\temp\Temporary Internet Files\OLK9\Microfilm_Marker.doc z ~ J w~ DATA SUBMITTAL COMPLIANCE REPORT 6/22/2009 Permit to Drill 2070490 Well Name/No. PRUDHOE BAY UNIT 12-12A Operator BP EXPLORATION (ALASK/~ INC API No. 50-029-20610-01-00 MD 12650 ND 8700 Completion Date 6/20/2007 Completion Status 1-OIL Current Status 1-Oll UIC N REQUIRED INFORMATION Mud Log No Samples No Directional Survey Yes DATA INFORMATION Types Electric or Other Logs Run: USIT / CBL / CCL, DIR / GR ! RES / MWD / PWD, DIR / GR / RES / St (data taken from Logs Portion of Master Well Data Maint Well Log Information: Log/ Electr Data Digital Dataset Log Log Run Interval OH / Type Med/Frmt Number Name Scale Media No Start Stop CH Received Comments og Cement Evaluation 5 Col 1 100 3800 Case 6/20/2007 CIL CBL USIT, GPIT, GR, I CCL 29-May-2007 ', D Asc Directional Survey 0 12650 Open 7/5/2007 ', r pt Directional Survey 0 12650 Open 7/5/2007 Log See Notes Blu 1 9969 10460 Case 7/30/2007 Mem Static Temp, Jewlery Log, GR, CCL, Temp, Pres 5-Ju1-2007 ED C Lis 1560~nduction/Resistivity 3318 12649 Open 10/26/2007 LIS Veri, GR, ROP , FET, RPS, DRHO, NPHI wlPDS graphics Log Induction/Resistivity 2 Blu 1 3318 12650 Open 10/26/2007 MD Vision Service, Borehole Log 18-Jun-2007 ` Log Induction/Resistivity 2 Blu 1 3318 12650 Open 10/26/2007 NO Vision Service, 18- Jun-2007 Log InductionlResistivity 2 Blu 1 3318 12650 Open 10/26/2007 TVD Vision Service Sub Sea, 18-Jun-2007 Weli Cores/Samples Information: Sample Interval Set Name Start Stop Sent Received Number Comments ~ ~ DATA SUBMITTAL COMPLIANCE REPORT 6/22/2009 Permit to Drill 2070490 Well Name/No. PRUDHOE BAY UNIT 12-12A MD 12650 TVD 8700 ADDITIONAL IPFORMATION Well Cored? Y / N Chips Received? Y / N Analysis Y / N Received? Operator BP EXPLORATION (ALASKly INC Completion Status 1-OIL Current Status 1-OIL \ Daily History Received? ~ Formation Tops ~N API No. 50-029-20610-U1-00 UIC N Completion Date 6/20/2007 Comments: ~1 ~ ~A~!~~, ~V~ ~ Compliance Reviewed By: Date: ~ ~ 10/19/07 Schtumber~er NO. 4449 Alaska Data 8 Consulting Services Company: State ot Alaska 2525 Gambeu Street, Suite a0o Alaska Oil & Gas Cons Comm Anchorage, AK 99503-2838 Attn: Christine Mahnken ATTN: Beth 333 West 7th Ave, Suite 100 Anchorage, AK 99501 Field: Prudhoe Bay Well Jnh i! 1 nn ne ..~~.... n...,. n~ n-'-- MPL-09 11767141 MEM INJECTION PROFILE 09/16/07 1 S-400A 40U15442 OH MWD/LWD EDIT ~ 09/14/07 1 12-12A 40015307 OH MWD/LWD EDIT 06/18/07 3 1 G-17A 40013619 OH MWD/LWD EDIT - "R 06/18/07 3 1 S-400A 11855508 CH EDIT PDC GR (USIT) ~ 09/18/07 1 G-268 10942213 MCNL "-- L ~ OS/23/05 1 1 C-32C 11628756 MCNL ~ 02/18l07 1 1 E-04A 11801079 RST / ~ 06/23/07 1 1 07-07B 11216202 MCNL (p - Q 06/28/06 1 1 L2-11 11209603 MCNL ~ p 04/30/06 1 1 E-32A 11767130 MCNL _ ~/5'(ep~ ~ 06/19/07 1 1 L-04 11603118 MCNL - 12/30/06 1 1 E-19B 11767134 MCNL ~- - ~~ 'P" )S(p V ~ 07/21/07 1 1 2-16/M-16 11846803 RST V - L Q(~ 08/13/07 1 1 1-39AlN-16 11628769 MCNL ~ ~ 04/15/07 1 1 _..~~ r...........~~...... ~.~..~~. ~.... v.v~.u.v ru.v ~~~ ~ v~vm~v v~~~ vvr ~ ~irvn ~ v. BP Exploration (Alaska) Inc. Petrotechnica~ Data Center LR2-1 ' °' ` ~ 900 E. Benson Blvd. ,,, , .~ .,.-, ,. Anchorage, Alaska 99508 n- Date Delivered: r ~'~ ~~ )~, : f Alaska Data & Consulting Services 2525 Gambell Street, Suite 4 0 Anchorage, AK 99503- 3 ; ATTN: Beth Received by: ~ ~ ~. ~ Saltmarsh, Arthur C (DOA) ~ Page 1 of 1 From: Hubble, Terrie L [Terrie.Hubble@bp.com] Sent: Monday, August 13, 2007 2:00 PM To: Saltmarsh, Arthur C (DOA) Subject: PBU 12-12A / PTD # 207-049 H ~ art, Please reference #he follawing well: Well Name: PBU 12-12A Permit #: 2Q7-049 API #: 50-029-20610-01-00 Top Perf MD: 10485' Battom PerF MD: 12646' This well began Production on July 18, 2007 Methad of Operations is: Gas Lift Date of Test: July 18, 2007 Hours Tested: 8 24-Hour Rate / Oil-Bbl: 991 24-Hour Rate / Gas-Mcf: 2,276 24-Hour Rate / Water-Bbl: 19 Test Rate / Oi1-Bbl: 330 Test Rate / Gas-Mcf: 759 Test Rate / Water-Bbl: 6 Choke Size: 128 Gas-Oil Ration: 2,297 Flow Tubing Pressure: 193 Casing Pressure: 10 Oil Gravity-API: Unavailable 8/13/2007 ~ ` J a~ ~i~~1~~~~~l~l~~ Alaska Data & Consulting Services 2526 Gambell Street, Suite 400 Anchorage, AK 99603-2838 ATTN: Beth w2u _~oh ~t 1 nn ne ..s:.. ~~ ~ - .~.~~ 1 NO. 4346 Company: State of Alaska Alaska Oil & Gas Cons Comm Attn: Christine Mahnken 333 West 7th Ave, Suite 100 Anchorage, AK 99501 Field: Prudhoe Bay Endicott n..a.. o~iz~io~ 3-251L-27 11686762 STATIC PRESSURE SURVEY 07/09/07 1 4-18/S-30 11813062 STATIC PRESSURE SURVEY 07/10l07 1 2-50/U-08 11676953 LDL 07/13/07 1 1-611Q-20 11695066 SBHP SURVEY O7l93l07 1 3-41/K-39 11846795 WFL 8 PRESS GRADIENT 07/17/07 1 7-41/0-23 11695068 INJECTION PROFILE 07/24/07 1 3-41/K-39 11846795 IPROF 8~ JEWELRY 07/16/07 1 L7-09 11626109 LDL 06/27/07 1 02-308 11626108 LDL 06/25/07 1 H-07A 11637346 LDL 06/30/07 1 12-OSA 11638649 FPIT 07/04/07 1 12-12A 11661162 MEM STATIC TEMP/JEWELRY 07/OSl07 1 P2-08 11686761 STATIC PRESSURE SURVEY 07/05l07 1 17-02 11745227 MEM GLS 07/10/07 1 09-11 11686765 STATIC PRESSURE SURVEY 07/11/07 1 X-19B 11801075 LDL 06/19/07 1 MPK-30 11676952 FPIT 07/12/07 1 11-08 11813061 STATIC PRESSURE SURVEY 07/07/07 1 03-14A 11849926 BHP SURVEY O7/25/07 1 01-16 11630486 PROD PROFILE 06/28/07 1 MPH-17 11813063 CBL & IMAGE LOG 07/27/07 1 01-15A 11849924 USIT 07/20/07 1 02-306 11813058 USIT 07/04/07 1 MPJ-24 11638647 USIT 06/29/07 1 E-101 11630488 PRODUCTION PROFILE O6/30/07 1 G-18A DI FACC Al~I[~.IAUn enr_~ o~ 11209612 rv~or ev c~~n. MCNL ~u~i. w 07/19/06 1 7 BP Exploration (Alaska) Inc. , v.......v v..~ vv. •~^v" , v. Petrotechnical Data Center LR2-1 900 E. Benson Blvd. Anchorage, Alaska 99508 Date Delivered: Alaska Data & Consulting Services 2525 Gambeli Street, Suite 400 Anchorage,AK 99503-2838 ATTN: Beth Received by: STATE OF ALASKA ~ ALASKA~IL AND GAS CONSERVATION COM~SSION WELL COMPLETION OR RECOMPLETION REPORT AND LOG ~~~„~~~~~E~ .;~~1(~ 2 3 2007 . ;,, ~.„ ~ ~~~ a~ons. Commission 1a. Well Status: ~ Oil ^ Gas ^ Plugged ^ Abandoned ^ Suspended zo,aac zs.,os 20AAC 25_110 ^ GINJ ^ WINJ 0 WDSPL ^ WAG ^ Other No. of Completions One 1b. Well Class: ~`~ ~ Development ^ Exploratory ^ Service ^ Stratigraphic 2. Operator Name: BP Exploration (Alaska) Inc. 5. Date Comp., Susp., or Aban ~ 6/20/2007 ,•D~ 12. Permit to Drill Number 207-049 ~ 3. Address: P.O. Box 196612, Anchorage, Alaska 99519-6612 6. Date Spudded 6/3/2007~ 13. API Number 50-029-20610-01-00 ~ 4a. Location of Well (Governmental Section): Surface: 10 ' FS 7 1' FEL SE ~ 7. Date T.D. Reached 6/17/2007 / 14. Well Name and Number: PBU 12-12A ~ 15 L, 5 , C. 18, T10N, R15E, UM Top of Productive Horizon: 5179' FSL, 2125' FEL, SEC. 18, T10N, R15E, UM 8• KB (ft above MSL): 70.84 Ground (ft MSL): 15. Field / Pool(s): Prudhoe Bay Field / Prudhoe Bay Total Depth: 436' FSL, 4175' FEL, SEC. 07, T10N, R15E, UM 9. Plug Back Depth (MD+ND) 12650 ~ 8700~ Pool 4b. Location of Well (State Base Plane Coordinates, NAD 27): Surface: x- 696843 ~ y- 5931327 ~ Zone- ASP4 ~ 10. Total Depth (MD+n/D) 12650 - 8700' 16. Property Designation: ADL 028329 ~ TPI: x- 695346 y_ 5935454 Zone- ASP4 Total Depth: x- 693280 y- 5935 3~I one- ASP4 11. SSSV Depth (MD+ND) None 17. Land Use Permit: ~ 18. Directional Survey ~ Yes ^ No Submit electronic and rinted information r 20 AAC 25.050 19. Water depth, if offshore N/A ft MSL 20. Thickness of Permafrost (ND): 1900' (Approx.) 21. Logs Obtained (List all logs here and submit electronic and printed information per 20 AAC 25.071): 7a~ ~ 3 M USIT / CBL / CCL, DIR / GR / RES / MWD / PWD, DIR / GR / RES / Stratasteer / RES / AZI-DEN 33/D.e~' rYb 22. CASING, LINER AND CEMENTING RECORD CASING SETTING DEPTH MD SETTING DEPTH ND HOLE 'aM4UPfF WT. PER FT. GRADE , TOP BOTTOM TOP BOTfOM SIZE GEMENTING RECL?RD PCILLED ' 20" 91.5# H-40 Surface 110' Surface 110' 30" 300 sx Permafrost 13-3/8" 72# L-80 Surface 2664' Surface 2664' 17-1/2" 2750 sx Fondu 400 sx PF 9-5/8" 47# L-80 Surface 31 ' Surface 3111' 12-1/4" 500 Class ~G' 7" 26# L-80 24' 3213' 24' 3209' N/A Tieback: 64 sx Class 'G' 7" 26# L-80 3213' 10414' 3209' 8709' 8-1/2" 815 sx Lite 121 sx Class'G' 4-1/2" 12.6# L-80 10242' 12648' 8619' 8700' 6-1/8" Uncemented Slotted Liner 23. Open to production or inject ion? ~ Yes ^ No 2•4; TUBING RECORD' If Yes, list each i (MD+ND of Top & Bottom; Pe nteroal open rforation Size and Number): Size DePTH SeT MD PACKER SET MD 4-1/2" Slotted Section 4-1/2", 12.6#, 13Cr-80 10251' 10194' MD TVD MD TVD 10485' - 11742' 8734' - 8699' 25. ACia, ~~acru~~, C~nrr SQUE~, ~c. ~'I HZZ' - 12646~ SF>JH~ - H7OO~ DEPTH INTERVAL MD AMOUNT H~ KIND OF MATERIAL USED Freeze Protected with 75 Bbls of Diesel ZB. PRODUCTION TEST Date First Production: Not on Production Yet Method of Operation (Flowing, Gas Lift, etc.): N/A Date of Test: 7/18/2007 Hours Tested: $ PROOUCr~or, FoR TEST PERIOD OIL-BBL: 330 GAS-MCF: 759 WATER-BBL: 6 CHOKE SIZE: 128 GAS-OIL RATIO: 2,297 Flow Tubing Press. 193 Casing Press: 10 Ca~cu~.a,reo 24-HOUR RATE• OIL-BBL: 991 GAS-MCF: 2,276 WATER-BBL: 19 OIL GRAVITY-AP) ~CORR~: Z7. CORE DATA Conventional Core(s) Acquired? ^ Yes ~ IVo Sidewal l Core s Ac uired? ^ Yes ~ No If Yes to either question, list formations and intervals cored (MD+ND of top and bottom of each), and summarize lithology and presence of oil, gas or water (submit separate sheets with this form, if needed). Submit detailed descriptions, core chips, photographs and laboratory analytical results per 20 AAC 250.071. COMr LETiON None ~.~~C~~ ~.--._ ~ ~ Form 10-407 Revised 02/2007 ~[~ ~ G~~ / 1~TINUED ON REVERSE SIDE ~S B~L aUG ~j ~~DO/ /.y ~ ` ~ lJ ZS. GEOLOGIC MARKERS ~LIST ALL FORMATIONS AN ERS ENCOUNTERED~: 29. FORMATION TESTS ' NAME TVD Well Teste . ^ Yes ~ No Permafrost Top If yes, list intervals and formatio~s tested, briefly summarizing test results. Attach separate sheets to this form, if needed, and submit PermafrOSt BaSe detailed test information per 20 AAC 25.071, Ugnu 4 4880' 4645' None Ugnu 4A 4918' 4675' Ugnu 3 5035' 4764' Ug~u 1 6031' 5535' West Sak 2 6737' 6088' West Sak 1 7047' 6329' Colville Mudstone 3 7377' 6585' Colville Mudstone 2 8032' 7111' Colville Mudstone 1 9158' 7987' H RZ 9563' 8239' Base HRZ 9868' 8411' LCU 10006' 8491' Top of Sag River 10412' 8708' Formation at Total Depth (Name): Sag River 10412' 8708' 30. List of Attachments: Summary of Daily Drilling Reports, Well Schematic Diagram, Surveys 31. I hereby certify that the fore oing is true and correct to the best of my knowledge. O~ Signed Terrie Hubble Title Technical Assistant Date /t ~~D~ PBU 12-12A 207-049 Prepared By Name/Number. Sondra Stewman, 564-4750 Well Number Drilling Engineer: Mehrdad Nadem, 564-5941 Permit No. / A roval No. INSTRUCTIONS GeNewu: 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. ITea~ 1a: Classification of Service Wells: Gas Injection, Water Injection, Water-Alternati~g-Gas Injection, Salt Water Disposal, Water Supply for Injection, Observation, or Other. Multiple completion is defined as a well producing from more than one pool with production from each pool completely segregated. Each segregated pool is a completion. ITeM 4b: TPI (Top of Producing Interval). ITenn 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). ITea- 20: Report true vertical thickness of permafrost in Box 20. Provide MD and ND for the top and base of permafrost in Box 28. ITeM 22: Attached supplemental records for this well should show the details of any multiple stage cementing and the location of the cementing tool. ITeM 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). Irenn 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 On1y BF~ E~PL~~ATIpN ~ F~~e 1~ 1 ~ 3, ~ ~ ~ ~~ak-Off 7~st3 5umm~iry ~ ~ ~ 3~~ - Legal Name: 12-12 Common Name: 12-12 'I"~tD~~e `.:. ~'es~l"YI~~ ~ `'~est ~'MA) ~ ==T~~~ ti~p~la~~'I~) !~I!AW " Sur~f~c~sFrassur~ ~,~kt~f~? ~r~~sc~r~`(BHF~~ : .. : ~Mt~ , € EE ,. . . , . .~ 5/31/2007 LOT 3,557.0 (ft) 3,539.0 (ft) 10.00 (ppg) 600 (psi) 2,438 (psi) 13.26 (ppg) 6/3/2007 LOT 3,318.0 (ft) 3,310.0 (ft) 9.60 (ppg) 590 (psi) 2,241 (psi) 13.03 (ppg) 6/13/2007 FIT ~(ft) (ft) (ppg) (psi) (psi) 13.03 (ppg) 6/14/2007 FIT 10,435.0 (ft) 8,717.8 (ft) 8.40 (ppg) 499 (psi) 4,303 (psi) 9.50 (ppg) ~ ~ Printed: 6/28/2007 1:26:13 PM , ~ ~ Legal Well Name: 12-12 Common Well Name: 12-12 Spud Date: 7/2/1981 Event Name: REENTER+COMPLETE Start: 5/26/2007 End: 6/20/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 6/20/2007 Rig Name: NABORS 7ES Rig Number: 5/26/2007 00:00 - 16:30 16.50 MOB P 16:30 - 17:30 1.00 MOB P 17:30 - 00:00 6.50 RIGU P 5/27/2007 00:00 - 01:00 1.00 RIGU P 01:00 - 02:00 I 1.001 WHSUR I P 02:00 - 02:30 0.50 WHSUR P 02:30 - 03:00 0.50 WHSUR P 03:00 - 03:30 0.50 WHSUR P 03:30 - 08:00 4.50 KILL P 08:00 - 09:00 I 1.001 KILL I P 09:00 - 11:00 I 2.001 KILL I P 11:00 - 12:00 1.00 KILL P 12:00 - 13:00 1.00 BOPSU P 13:00 - 14:30 1.50 BOPSU P 14:30 - 16:00 1.50 BOPSU P 16:00 - 17:00 1.00 BOPSU P 17:00 - 19:00 2.00 BOPSU P 19:00 - 19:30 0.50 BOPSU~ P 19:30 - 00:00 4.50 BOPSU P 5/28/2007 I 00:00 - 01:30 I 1.50 I BOPSUp P 01:30 - 02:00 I 0.501 BOPSUR P PRE Depart DS 01-05. Travel to DS 12-12. PRE Arrive on location ~ 16:30 hrs. Move rig to 12-12 site. PRE PJSM. Spot rig over well ~ 17:30 hrs. Rig up. PRE Rig up circulation lines in the cellar and pressure test to 3500 psi. DECOMP Take on fluids in pits. Rig accepted ~ 01:00 hrs 5/27/076 DECOMP Pre-Spud meeting / PJSM. DECOMP Service rig, mobilize, rig up DSM to pull BPV. DECOMP Pull BPV. DECOMP Circulate wellbore clean of freeze protection and other fluids. Circulate in 8.5 ppg Seawater 104 gpm / 42 psi. -Pump 450 bbls of heated Seawater ~ 8.5 ppg. -Pump 50 bbls of Safe Surf-O / Seawater sweep. -Displace well to 9.8 ppg NaCI Brine - 200 gpm / 225 psi. DECOMP R/U & test Tbg x IA U 3500 psi - FAIL. Bled to -0 in 20 minutes. DECOMP R/U Little Red Hot Oil Seroices. Test OA U 2000 psi w/ diesel for 30 minutes. - Final pressure 1900 psi - PASS. R/D Little Red. DECOMP Monitor IA on well losing- 5- bbls/hr. DECOMP DSM - install BPV. Attempt to test f/ below to 1000 psi. 3" Grey valve packing on IA leaking - tightened packing. Test BPV to 1000 psi f/ 10 minutes with mud pumps maintaining 0.5 bpm on pump to maintain hole fill and 1000 psi. - Pass. L/D lubricator. Continue to keep hole full (IA) w/ 9.8 ppg NaCI Brine. DECOMP Cameron - dry rod TWC. -1st test failed due to O-ring failure on Otis Cap. -Retest to 1000 psi f/ 10 min - PASS. R/D and blow down test equipment. DECOMP PJSM w/ Cameron and crew. N/D Tree & Adaptor flange. DECOMP Inspect top connection on Tbg hanger. Verified thread type on hanger. 5 7/8" RH ACME. 18 1/4 tums make up. DECOMP PJSM. N/U BOPE. DECOMP R/U test equipment DECOMP Test BOPs 250 / 3500 psi. w/ 4" & 5 1/2" test jts. AOGCC Bob Noble declined to witness. BP rep Dan Shearer and NAD TP Biff Perry witness test. Brine wt = 9.8 ppg. Total losses for the day = 83 bbls. 6.38 bph Average. DECOMP Test BOPs 250 / 3500 psi. w/ 4" & 5 1/2" test jts. AOGCC Bob Noble declined to witness. BP rep Dan Shearer and NAD TP Biff Perry witness test. DECOMP Biow down all lines. R/D all testing equipment. Printed: 6/28/2007 1:26:20 PM , ~ ~ Legal Well Name: 12-12 Common Well Name: 12-12 Spud Date: 7/2/1981 Event Name: REENTER+COMPLETE Start: 5/26/2007 End: 6/20/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 6/20/2007 Rig Name: NABORS 7ES Rig Number: 5/28/2007 02:00 - 04:00 2.00 BOPSU P 04:00 - 04:30 0.50 PULL P 04:30 - 05:00 0.50 PULL P 05:00 - 06:00 1.00 PULL P 06:00 - 08:00 I 2.00 I PULL I P 08:00 - 08:30 I 0.50 I PULL I P 08:30 - 14:45 6.25 PULL P 14:45 - 15:00 025 PULL P 15:00 - 15:15 025 BOPSU P 15:15 - 17:15 2.00 BOPSU P 17:15 - 17:30 0.25 BOPSUF~ P 17:30 - 18:30 1.00 BOPSUb P 18:30 - 20:30 2.00 BOPSU~ P 20:30 - 21:00 0.50 BOPSU P 21:00 - 22:00 I 1.001 BOPSUR P 22:00 - 22:30 0.50 DHB P 22:30 - 00:00 1.50 DHB P 5/29/2007 100:00 - 01:00 I 1.001 CLEAN I P 01:00 - 02:00 1.00 EVAL P 02:00 - 04:30 2.50 EVAL N 04:30 - 08:30 4.00 P 08:30 - 10:00 1.50 EVAL P 10:00 - 13:00 3.00 CASE P 13:00 - 14:00 I 1.001 CASE I P DECOMP R/U DSM lubricator. Puil TWC. R/D lubricator. DECOMP R/U to unseat Tbg hanger and pull 5 1/2" Tbg. DECOMP Back out lock down screws. DECOMP Pull Tbg hanger above fioor. Puli free w/ 175K. Up wt 83K. Brine wt in hole 9.8 ppg DECOMP CBU. 240 gpm / 90 psi. Gas seen on bottoms up (Brine wt= 9.2 ppg @ B.U.) Circ and condition Brine untill 9.8 ppg all the way around. DECOMP UD hanger and jt of DP. C/O elevators to pull 5 1/2" Tbg. Up wt= 80K, SOW= 78K. DECOMP POH, UD 5 1/2", 17#, L-80 Tbg. Recovered: -23 clamps, 23 pins & 6 SS bands. -94 full jts & 1 cut off jt = 20.31'. -1-GLM. DECOMP R/D Tbg handling equipment. DECOMP R/U BOPE test equipment. DECOMP Test bottom pipe rams ( 2 7/8" x 5") variables, w/ 5" test jt.-250 / 3500 psi.-PASS. Attempt test w/ 4" test jt-SSSV control line port (SMR) leaking. Mobilize Haliburton Storm Pkr. DECOMP R/D and blow down test equipment. DECOMP P/U 9- 6 1/4" DCs. M/U RTTS. Up wt= 45K, SOW= 45K. Set 80' below RKB. Test from above to 1000 psi. -PASS. DECOMP Run in 4" test jt. Cameron remove SMR. Set test plug. Verify set through SMR hole. Install SMR blanks. DECOMP Test bottom pipe rams ( 2 7/8" x 5") variables, w/ 4" test jt.-250 / 3500 psi.- PASS. R/D and blow down test equipment. DECOMP Back out RTfS. UD 2 jts DP, UD RTTS. Rack back 3 stds 6 1/4" DCs. Set wear ring. DECOMP PJSM w/ SLB. R/U E-line w/ 8 1/2" Gauge ring & Junk basket DECOMP RIH w/ E-line, Hang up ~ 245' md - Not enough weight. POH add weight bars. RIH work ~ 248' md, continue to RIH. Tag 5 1/2" Tbg top ~ 3801' md ELM. DECOMP Continue to run w/SLB E-line. POH w/ Junk basket & Gauge ring. Junk basket empty. DECOMP RU USIT SFAL DECOMP Run USIT/ CBL. Computer failres resulted in running the USIT in teh hoel again. DECOMP R/U & Run USIT/ CBL f/ 3,810' md to surface. DECOMP Send logs to Town & consult w/ Town on next step. DECOMP R/U & run EZSVi cementer on E-line to 3,564' md. Set plug and POH. DECOMP PJSM. Printed: 6/28/2007 126:20 PM ~ ~ Legal Well Name: 12-12 Common Well Name: 12-12 Spud Date: 7/2/1981 Event Name: REENTER+COMPLETE Start: 5/26/2007 End: 6/20/2007 'Contractor Name: NABORS ALASKA DRILLING I Rig Release: 6/20/2007 ~~i Rig Name: NABORS 7ES Rig Number: 5/29/2007 13:00 - 14:00 1.00 CASE P DECOMP R/U & test 9 5/8" casing to 3500 psi / 30 minutes - PASS. ' R/D and blow down all lines and equipment. 14:00 - 17:30 3.50 CASE P DECOMP PJSM w/ HES hand & rig crew. P/U Star Guide cement stinger. RIH picking up 5" DP U 3,561' md. 17:30 - 18:30 1.00 CASE P DECOMP Circulate 212 bbls ~ 6 bpm / 135 psi to insure DP is clear of debris. ' PJSM during circulation w/ BP reps, NAD TPs, SLB and rig crew. 18:30 - 20:00 1.50 CASE C DECOMP Attempt to tag EZSV @ 3,564'md. P/U singie, RIH, tag EZSV ~ 3,583' md. (19 ft deep). Set down w/ stinger, open valve w/ 20K. PU= 90K. SOW= 95K. 20:00 - 20:30 0.50 CASE C DECOMP R/U cement head & manifold. 20:30 - 21:00 0.50 CASE C DECOMP Establish injection rate ~ 0.5 bpm / 1100 psi f/ 5 bbls. I Unsting f/ EZSV. 21:00 - 22:00 1.00 CASE C DECOMP Close bag, S~B pump 5 bbls water to PT lines to 4000 psi. Pump cement while holding 200 psi back pressure w/ Choke. -5 bbls water. -45 bbls of 15.8 ppg class "G" cement. -10 bbls of 12.5 ppg Mud Push. Sting into EZSV. Rig pumps displace 63 bbls. As follows: Start - 0.5 bpm / 760 psi. ~ 380 stks / 1285 psi. Open bag. C~1 500 stks / 940 psi. Up rate to 1 bpm ~ 550 stks / 730 psi. -700 stks / 480 psi. ~ 800 stks / 608 psi. ~ 900 stks / 729 psi. -1000 stks / 800 psi. Slow pump rate to 0.5 bpm. ~ 1050 stks 753 psi. ~ 1090 stks / 767 psi. C.I.P. at retainer. 27 bbls of Cement through suspected leak at 3,810' md in casing. 22:00 - 22:30 0.50 CASE C DECOMP Circulate out excess Cement and Mud Push. Pump- 238 bbls, received and dumped 30 bbls of Cement and Mud Push contaminated brine returns. 22:30 - 00:00 1,50 CASE P DECOMP Monitor well - Static. POH w/ SLM to 1,603' md. 5/30/2007 00:00 - 01:00 1.00 CASE P DECOMP Continue to POH (SLM) f/ 1,603' md. UD Cement stinger. No correction on SLM. 01:00 - 02:00 1.00 CASE P DECOMP Clean and clear rig floor. Senrice Rig: Top drive, Draw works and Koomey. 02:00 - 02:45 0.75 CASE N DPRB DECOMP PJSM on rigging up SLB. Rig up SLB E-liners. 02:45 - 05:30 2.75 CASE N DPRB DECOMP RIH w/ SLB E-line. Confirm depths and collar locations. -SLB= 3,565' md. - DP= 3,583' md. Confirm EZSV is 35' md below casing collar. E-line depth correction is 18 ft. 05:30 - 08:00 2.50 STWHIP P WEXIT PJSM w/ Rig crew,Baker hand and BP rep. P/U & M/U Whipstock and Miliing BHA, RIH. 08:00 - 11:30 3.50 STWHIP P WEXIT P/U 17 jts of 5" HWDP f/ shed. RIH U 894' md. Continue to RIH from Derrick w/ 5" DP to 3,537' md. M/U Top drive. Pump 520 gpm / 1150 psi. Circulate 1 DP volume. Orient Whipstock 5 degrees left of high side. RIH, tag @ 3,559' md. Set down 10K / 23' high. Check logs. Whipstock sitting across collar. Printed: 6/28/2007 126:20 PM ~ ~ Legal Well Name: 12-12 Common Well Name: 12-12 Spud Date: 7/2/1981 Event Name: REENTER+COMPLETE Start: 5/26/2007 End: 6/20/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 6/20/2007 Rig Name: NABORS 7ES Rig Number: 5/30/2007 11:30-15:00 3.50 STWHIP N DPRB WEXIT 15:00-16:15 1.25 STWHIP N DPRB WEXIT 16:15-16:30 0.25 STWHIP N DPRB WEXIT 16:30 - 18:00 1.50 STWHIP N DPRB WEXIT 18:00 - 21:30 3.50 STWHIP N DPRB WEXIT 21:30-23:00 1.50 STWHIP P WEXIT 23:00-OO:OO I 1.OO~STWHIPIN I IWEXIT 5/31/2007 I00:00 - 01:00 I 1.001 STWHIPI N ( DPRB I WEXIT 01:00-02:30 1.50 STWHIP N DPRB WEXIT 02:30 - 04:00 1.50 STWHIP P WEXIT 04:00-05:00 1.00 STWHIP N DPRB WEXIT 05:00-06:00 1.00 STWHIP N DPRB WEXIT 06:00 - 06:15 0.25 STWHIP N DPRB WEXIT 06:15 - 08:00 1.75 STWHIP N DPRB WEXIT 08:00-10:30 2.50 STWHIP N DPRB WEXIT 10:30-11:00 0.50 STWHIP N DPRB WEXIT 11:00-12:00 I 1.OOISTWHIPIN IRREP ~WEXIT 12:00 - ~\'~~1~~ 16:30 - t8:00 i.50 STWHIP P WEXlT \ IJ "y 18:00 - 19:00 1.00 STWHIP P WEXIT C~ cri,' ~.'~ ~ ~t ~~ ~~C POH w/ Whipstock. PJSM w/ BP rep, Baker hand and crew. L/D Whipstock. Inside the trip anchor of Whipstock is packed off with firm contaminated Mud Push and Cement. Clean and clear floor. PJSM. P/U -clean out / casing scraper BHA. PJSM. P/U 5" DP, RIH to 3,500' md. PJSM. Cut 54' of drilling line, adjust brakes on draw works. Service Top drive, service Crown. RIH, tag cement ~ 3,559' md. Break circulation. 190 gpm / 154 psi stage up to 500 gpm / 900 psi. Up wt= 120K, SOW= 115K, ROT wt= 120K, RPM= 20, Tq= 1 K. Clean out cement f/ 3,559' md to 3,570' md w/ RPM= 60, Tq= 2.5K. Continue to ciean out cement. 500 gpm / 920 psi. RPM= 60, UP wt= 175K, SOW= 115K. Tagged top of EZSV @ 3,580' md. Pick up, shut down pumps and rotary, set down 40K-OK. Stand back 1 stand of DP. R/U & test 9 5/8" casing to 3500 psi. - PASS. R/D test equipment. Displace well to new 10.0 ppg LSND from M-I mud plant. 250 gpm / 860 psi. 237 bbls hole volume. POH from 3,580' md to 757' md, for Whipstock. UD " Clean-OuY' BHA PJSM w/ Baker rep, WSL and rig crew on P/U and running W hipstock. P/U & M/U Whipstock & BHA, RIH. RIH w/ Whipstock & Milling assembiy to 3,541" md. M/U Top Drive, Orient 14 degrees left of top center, RIH. Up wt=120K, SOW=115K, GPM= 500. Tagged piug ~ 3,579' md. Set down 25K, sheared Pin on W hipstock. P/U with no excess weight. Set down 40K, set trip Anchor. Change out Gilmore valve on Accumulator. For annular pressure control. Cut window from T W= 3,557' md to B W=3,567 'md. Rot wt= 116K, RPM= 80, GPM= 500, PSI= 860, WOM= 6K, Tq= 4-5K. ' Drill to 3,586'. (Gauged hole depth = 3,582' md). Total wt of recovered metal = 276 Ibs. Work mill through window several times, with and without rotation. No problems. Pump 10.0 ppg Super Sweep with a 10% increase in cuttings returns when back at surface. R/U and perform FIT / LOT. Mud wt= 10.0 ppg, TVD= 3,539' tvd, LOT= 600 psi. EMWT= 13.26 ppg. Printed: 6/28/2007 12620 PM ~ ~ Legal Well Name: 12-12 Common Well Name: 12-12 Spud Date: 7/2/1981 Event Name: REENTER+COMPLETE Start: 5/26/2007 End: 6/20/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 6/20/2007 Rig Name: NABORS 7ES Rig Number: 5/31/2007 19:00 - 21:00 2.00 STWHIP P WEXIT POH from 3,557' md. 21:00 - 22:15 125 STWHIP P WEXIT UD (9)- 6 1/4" DC's. UD MWD, Jars, UBHO, and Milling assembly. Mills in gauge. 22:15 - 22:30 0.25 STWHIP P WEXIT Clean & clear Rig floor. 22:30 - 23:30 1.00 STWHIP P WEXIT Pull wear ring. M/U Stack Jetting tool. Function BOP's. Jet Stack. B/D lines. Install wear ring. 23:30 - 00:00 0.50 STW HIP P W EXIT P/U DP to 125' md. 6/1/2007 00:00 - 02:00 2.00 STWHIP P WEXIT Pick up 5" drill pipe and stand in derrick. Prepare tools and rig floot to pick up BHA. 02:00 - 04:00 2.00 STWHIP P WEXIT Pick up new 8 1/2" PDC bit and Driiling Rotary Steerable Power drive BHA (RSS). 04:00 - 08:00 4.00 STWHIP P WEXIT RIH to window at 3,557' with drilling BHA picking up 5" drill pipe in singles. Shallow test MWD. 08:00 - 08:30 0.50 STWHIP P WEXIT Seroice top drive 08:30 - 10:00 1.50 STWHIP P WEXIT POH to 3485'. RIH to top of 9 5/8" window MAD pass to tie-in GR logs. 10:00 - 11:00 1.00 STWHIP P WEXIT Slowly lower bit and BHA to window at 3357' and across Whipstock slide. Tag up 3' from bottom of window. Work BHA and attempt to pass through window. No success 11:00 - 13:30 2.50 STWHIP N DPRB WEXIT POH with RSS driiling BHA. Mud weight 10.0 ppg 13:30 - 15:00 1.50 STWHIP N DPRB WEXIT Stand back drilling BHA, 5" HWDP and drill caoolars. Lay down RSS, MWD and bit. PDC bit damaged on all 6 blades in the shoulder area. 15:00 - 16:30 1.50 STWHIP N DPRB WEXIT Pick up clean-out milling BHA, Baker 8 1/2" starting mill, 5" flex joint and 8 1/2" upper Watermellon mill. RIH with HWDp to 603'. 16:30 - 17:15 0.75 STWHIP N DPRB WEXIT RIH with clean-out milling BHA to 3535' 17:15 - 22:45 5.50 STWHIP N DPRB WEXIT Establish up, down and rotating weights. Mill on obstruction in window with 2K weight on the miil, 1 K-2K torque and slow RPM. Having difficulty keeping the mill on the Whipstock slide. 22:45 - 23:30 0.75 STWHIP N DPRB WEXIT Circulate around 11.0 ppg Super Sweep pill. 23:30 - 00:00 0.50 STW HIP N DPRB W EXIT Monitor weli. Pump dry job, blow down top drive 6/2/2007 00:00 - 02:00 2.00 STWHIP N DPRB WEXIT POH f/ 3,560' md to 603' md. 02:00 - 02:30 0.50 STWHIP N DPRB WEXIT Rack collars and HWDP in derrick. UD Miliing BHA. 02:30 - 02:45 0.25 STWHIP N DPRB WEXIT PJSM- w/ WSL, NAD TP, SLB & rig crew. Discuss R/U & running of CCL & EZSV Bridge plug. 02:45 - 03:30 0.75 STWHIP N DPRB WEXIT R/U E-liners. 03:30 - 04:00 0.50 STWHIP N DPRB WEXIT RIH for CCL and depth control run. 04:00 - 06:30 2.50 STWHIP N DPRB WEXIT Pull E-line out of the hole & R/D due to bad spot in line (wire frayed). Cut +250 feet off drum. Rehead running tool. 06:30-07:00 0.50 STWHIP N DPRB WEXIT R/U E-line. 07:00 - 07:30 0.50 STW HIP N DPRB W EXIT Run correlation log-CCL to 3,550' md. 07:30 - 10:00 2.50 STWHIP N DPRB WEXIT R/D logging equipment. R/U to run EZSV Bridge piug. 10:00 - 11:30 1.50 STWHIP N DPRB WEXIT RIH w/ EZSV Bridge plug. Set plug ~ 3,339' md / 3,327' tvd. POH w/ Wireline. 11:30 - 12:15 0.75 STWHIP N DPRB WEXIT R/D E-liners Printed: 6/28/2007 12620 PM ~ Legal Well Name: 12-12 Common Well Name: 12-12 Event Name: REENTER+COMPLETE Contractor Name: NABORS ALASKA DRILLING I Rig Name: NABORS 7ES ~ Spud Date: 7/2/1981 Start: 5/26/2007 End: 6/20/2007 Rig Release: 6/20/2007 Rig Number: 6/2/2007 12:15-13:15 1.00 STWHIP N DPRB WEXIT 13:15 - 14:30 1.25 STWHIP N DPRB WEXIT 14:30 - 17:30 3.00 STWHIP N DPRB WEXIT 17:30 - 19:15 1.75 STWHIP N DPRB WEXIT 19:15 - 20:00 0.75 STWHIP N DPRB WEXIT ~~ ~ ~c~+"~ ~ 6/3/2007 20:00-21:00 ~_ 1.OO~STWHIP~N ~DPRB ~WEXIT 21:00 - 00:00 3.OOrSTWHIP~ N DPRB WEXIT 00:00 - 08:30 I 8.5~ I STWHIPI N I OPRB I W EXIT 08:30 - 09:00 0.50 STWHIP P WEXIT 09:00 - 09:30 0.50 STWHIP P WEXIT 0930 - 09:45 025 STWHIP P WEXIT 09:45 - 10:30 0.75 STWHIP P WEXIT 10:30 - 11:30 1.00 STWHIP P WEXIT 11:30 - 13:45 2.25 STWHIP P WEXIT 13:45 - 14:45 1.00 STWHIP P WEXIT 14:45 - 17:00 2.25 STWHIP P WEXIT 17:00 - 18:30 1.50 STWHIP P WEXIT 18:30 - 19:30 1.00 STWHIP P WEXIT 19:30 - 00:00 4.50 DRILL P INT1 6/4/2007 00:00 - 12:00 12.00 DRILL P INT1 12:00 - 15:00 3.00 DRILL P INT1 15:00 - 15:30 0.50 DRILL N STUC INT1 R/U & test EZSV Bridge plug to 3500 psi / 5 minutes - PASS. P/U & stand back (9 jts)- 6 1/4" DC's PJSM -M/U Whipstock Assy & BHA. RIH, Surface test MWD @ 1,031' md. RIH to 3,302' md. Establish circulation & string wts. Orient Whipstock 21 degrees left of Top. Tag EZSV Bridge plug ~ 3,339' md. Set Whipstock. Mill Lug off of Whipstock. Mill window f/ 3,318' md (window plan 3,318' md to 3,320' md). GPM= 504, PSI= 839, RPM= 88, Tq= 5K, Up wt= 115K, SOW= 115K, WOB= 6K. Metal cuttings returned= 18 Ibs. Continue to Mill new window in 9 5/8" casing from 3,318' md to 3,335' md. TOW= 3,318' md. BOW= 3,335' md. Metal recoverd= 371 Ibs. Drili 25 ft of new formation to 3,360' md for LOT. Pump sweeps. Work Mill through window with and without rig pumps on. No Drag or weight stacking noted. Pu~l up into casing for LOT. R/U for LOT. Perform LOT to 13.01 ppg EMWT. R/D, pump dry job. Blow down tines. POH f/ 3,310' md to 375' md. Mud weight= 9.6 ppg. UD DC's, MWD and Milling Assy. Upper Mill in gauge, Starter Mill 1/8" out of gauge. Pull wear bushing, Jet the Stack clean, set Wear bushing. PJSM. -M/U Rotary Steerable BHA. RIH U 739' md. Surface test MW D. RIH U 3,295' md. Establish ECD and drilling parameter baselines. Work through window: 5K Dn wt ~ 3,321' md. 10K Dn wt C~ 3,328' md. Slack off past 3,328' md w/ 424 gpm / 860 psi to 3,345' md. Ream from 3,345' md to 3,360' md.w/ 545 gpm, 1265 psi. Tq= 4K, RPM= 30, Up wt= 115K, SOW= 105K. Drill from 3,360' md to 3,600' md. W06= 5K, GPM= 547, PSI i on= 1324, PSI off= 1250, Tq on= 3K, Tq off= 2K, Up wt= 118K, SOW= 105K, Rt wt= 110K, RPM= 120, ECD= 10.45 Calc, 10.44 Act. Mud weight 9.6 ppg. Drill ahead 8 1/2" hole with Rotary Steerable System (RSS) Power Drive from 3,600' md to 4,707' md. GPM= 550, PSI on= 1740, PSI off= 1607, PU wt= 135K, SOW= 120K, Tq on= 6K, Tq off= 5K, ROT wt= 120K, Calc ECD= 10.38 ppg, Act ECD= 10.65 ppg. Mud wt= 9.6 ppg. Drill ahead 8 1/2" hole with RSS from 4,707' md 5232'md. At 5,935' md pumped a Lo / Hi Sweep ECD from 11.01 ppg to 10.90 ppg. GPM= 546, PSI on= 1803, PSI off= 1794, PU wt= 175K, SOW= 130K, Tq on= 9K, Tq off= 8K, ROT wt= 140K, Calc ECD= 10.41 ppg, Act ECD= 10.89. Mud wt= 9.6 ppg. Sudden increase in torque while drilling, stall out Top Drive, unable to pick up or rotate, full circulation. Work pipe several times to 200K. Pipe came free. Work pipe up one full stand no tight hole. Run stand in while rotating with no obstruction. Work pipe one more time with out rotating and slow pump rate, Printed: 6/28/2007 726:20 PM ~ ~ Legal Well Name: 12-12 Common Well Name: 12-12 Spud Date: 7/2/1981 Event Name: REENTER+COMPLETE Start: 5/26/2007 End: 6/20/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 6/20/2007 Rig Name: NABORS 7ES Rig Number: 6/4/2007 15:00 - 15:30 0.50 DRILL N STUC INT1 15:30 - 00:00 8.50 DRILL P INTi 6/5/2007 00:00 - 06:00 6.00 DRILL P INT1 06:00 - 16:15 1025 DRILL P INT1 16:15 - 17:15 1.00 DRILL N RREP INT1 17:15 - 00:00 6.75 DRILL P INT1 6/6/2007 00:00 - 02:30 2.50 DRILL P INT1 02:30 - 03:30 1.00 DRILL P INT1 03:30 - 11:00 7.50 DRILL N DFAL INT1 no problem. Resume drilling. Noted coal in bottoms up samples. Drili ahead 8 1/2" hole with RSS from 5232' md to 6,126' md. At 5,935' md pumped a Lo / Hi Sweep ECD dropped from 11.01 ppg to 10.90 ppg. GPM= 546, PSI on= 1803, PSI off= i794, PU wt= 175K, SOW= 130K, Tq on= 9K, Tq off= 8K, ROT wt= 140K, Calc ECD= 10.41 ppg, Act ECD= 10.89. Mud wt= 9.6 PP9• Directionaliy Drill 8 1/2" hole with Rotary Steerable System from 6,126' md to 6650' Pumped 40 bbl high vis sweeps at 6245' and 6461' WOB 25K, gpm 550, psi on 1875, psi off 1822, tq. on 11 K, tq off 9K, UP 190K, SO 145K, ROT 150K, RPM 150. Caiculated ECD = 10.33 ppg. Actual ECDs = 10.65 ppg. At 6425' Sudden increase in torque while drilling, stall out Top Drive, unable to pick up or rotate, fali circulation. Work pipe to 40K over string weight. Pipe came free. Work pipe up one joint no tight hole. Resume drilling. Directionally drill f/6461' to 7608' 8 1/2" hole with Rotary Steerable System. Pumped 40 bbl high vis sweeps at 6245' and 6461' WOB 25K, gpm 550, psi on 1875, psi otf 1822, tq. on 11 K, tq off 9K, UP 190K, SO 145K, ROT 150K, RPM 150. Repair mud pump #1. Leak in charge pump line. Continue circulating with pump #2. Circulate 40 bbl. Hi-Vis sweep 126 vis, surface to surfaceand lower ECD from 11.11 ppg to 10.33 ppg. Slight increase in cuttings across shakers. Drill directionally 8 1/2" hole from 7608' to 8180'. 20K WOB, 541 gpm, 1985 psi on, 1932 psi off, 12K tq on, 10K tq. off, UP 215K, SO 155K, ROT 162K, RPM 150. ECD calc 10.35 ppg, ECD actual 11.13 ppg. Added 580 bbi new 9.6 ppg LSND mud. Lower MBT from 19 to 12, ECD improved to 11.13 ppg. ADT = 15.02 hrs/24 hrs. Progress = 2054'. Drill directionally 8 1/2" hole from 8180' to 8333'. 20K WOB, 550 gpm, 2095 psi on, 2013 psi off, 13K tq on, 11 K tq. off, UP 220K, SO 170K, ROT 165K, RPM i50. ECD calc 10.33 ppg, ECD actual 11.09 ppg. From 8202' a decrease in ROP was noted. Changed drilling parameters with no significant improvement. Minimum ROP 75' per hour. Decision made to stop drilling per agreed with ODE and town drilling team. Circulate 40 bbls Hi-Vis sweep surface to surface and continue circulating 550 gpm until ECD 10.33 ppg. POH for bit and BHA. 35K over puli. Backreaming f/8334' to 6411'. 550 gpm, 120 rpm. Pull f/6411' to window at 3335' w/no overpull, no backreaming. No drag coming through window. Continue pulling to BHA at 230'. Printed: 6/28l2007 126:20 PM ~ ~ Legal Well Name: 12-12 Common Well Name: 12-12 Spud Date: 7/2/1981 Event Name: REENTER+COMPLETE Start: 5/26/2007 End: 6/20/2007 Contractor Name: NABORS ALASKA DRILLING i Rig Release: 6/20/2007 Rig Name: NABORS 7ES Rig Number: 6/6/2007 11:00 - 12:30 1.50 DRILL N DFAL INTi 12:30 - 15:00 2.50 DRILL N DFAL INT1 15:00 - 16:15 I 1.25I DRILL ~ N I DFAL I INT1 16:15 - 17:45 1.50 DRILL P INT1 17:45 - 22:00 4.25 DRILL N DFAL INTi 22:00 - 23:00 1.00 DRILL N DFAL INT1 23:00 - 00:00 1.00 DRILL P INTi 6/7/2007 I 00:00 - 06:00 I 6.00 I DRILL I P 06:00 - 12:00 I 6.00 I DRILL I P 12:00 - 12:30 I 0.501 DRILL I P 12:30 - 14:30 I 2.001 DRILL I P 14:30 - 15:30 I 1.001 DRILL I P 15:30 - 20:30 I 5.001 DRILL I P Send 290 bbls of old 9.6 ppg mud to plant to be weighted up to I NT1 INT1 INT1 INT1 LD 8-1/2" BHA # 7, rotary steerabie system. PU 8-1/2" BHA # 8, rotary steerable system w/used 8.5" RSX519 PDC bit. Surface test power drive and MW D RIH to 3200'. Cut and slip 95' of drilling line. Service top drive. RIH to 8239'. Saw no drag through window f/3318' to 3335'. Test MWD at 3578' and 4050'. OK. Wash down last stand f/8239' to 8333'. Log overlap per geo 300 fph, 511 gpm, 1900 psi. No fili found on bottom. Drlg 8-1 /2" hole w/rotary steerable system f/8333' to 8488'. 20K WOB, 550 gpm, 2139 psi on, 2113 psi off, 14K tq on, 13K tq off, 220K PU, 155K SO, 168 ROT, 150 rpm, Calc ECD 10.36 ppg, Actual ECD 10.8 ppg. ADT f/24 hrs = 2.6 hrs. Progress = 308'. Drlg 8-1/2" hole w/rotary steerable system f/8488' to 9100'. 20K WOB, 550 gpm, 2200 psi on, 2120 psi off, 16K tq on, 14K tq off, 235K PU, 162K SO, 175 ROT, 150 rpm, Calc ECD 10.36 ppg, Actual ECD 10.81 ppg. Note: At 8676', 01:30, ECD 10.36 calc. vs. 11.33 actual. Pump 40 bbls Hi-Vis sweep, 126 Vis, surface to surface. Small increase in cuttings noted. Drop ROP f/240 fph to 130 fph. Drill ahead w/reduced ROP to control ECD level. NOTE: At 04:00 hrs, 8960' the rate of penetration was intentionally reduced to avoid driliing into the HRZ before weighting the mud up to 11.5 ppg. The "spike" fluid from the MI mud plant was not ready due to some inconsistency in the performance of the polymer products that affected the yield point of the mud. Drlg 8-1/2" hole w/rotary steerable system f/9100' to 9464'. Add 13.4 ppg LSND spike fluid and bring mud wt f/9.6 ppg to 11.5 ppg. Control drill until mud wt at 11.5 ppg prior to 9200'. 10 to 20K WOB, 500 gpm, 2414 psi on, 2306 psi off, 16K tq on, 13K tq off, 245K PU, 165K SO, 180 ROT, 150 rpm, Calc ECD 12.20 ppg, Actual ECD 12.49 ppg. Drig w/8-1l2" rotary steerable system f/9464' to 9506'. Incur 200 bbl/hr mud losses. 15K WOB, 553 gpm, 2306 psi on, 16K tq on, 150 rpm. Monitor well and note flowback returning 1/3 of lost fluid. Flow then tapered off and stopped. Circulate and reciprocate. 250 gpm, 714 psi, 30' strokes. Pump 15 Ib/bbi LCM, MI Mix II fine and medium. INT1 Drlg f/9506' to 9559' w/mud losses 140 to 200 bbls/hr. 15 WOB, 505 agpm, 2146 psi on 15K tq on, 100 rpm. INTi Circulate and reciprocate 267 gpm, 734 psi. w/no losses. Printed: 6/28/2007 1:26:20 PM ~ ~ Legal Well Name: 12-12 Common Well Name: 12-12 Spud Date: 7/2/1981 Event Name: REENTER+COMPLETE Start: 5/26/2007 End: 6/20/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 6/20/2007 Rig Name: NABORS 7ES Rig Number: 6/7/2007 15:30 - 20:30 5.00 DRILL P INT1 11.5 ppg. Ordered additional 290 bbls new mud f/MI to start building. 20:30 - 23:30 3.00 DRILL P INT1 Pump 50 bbl LCM pill w/15 Ib/bbl of Mix II Fine and Medium, continue drilling ahead using Mix II Fine and Medium LCM. Drill f/9559' to 9748'. WOB 15K, 206 gpm, 2317 psi on, 2212 psi off, tq on 17K, tq off 16K, PU 240K, SO 155K, ROT 180K. Calculated ECD 12.35 ppg, Actual ECD = 12.69 ppg. At 9730' noted 100 bbl loss in 12 minutes. 23:30 - 00:00 0.50 DRILL P INT1 Shut down pumps and reciprocated pipe. Well breathing. Gained back 130 bbis then flow gradually stopped. 6/8/2007 00:00 - 01:30 1.50 DRILL P INT1 Drlg f/9748' to 9830'. Pump 50 bbl LCM pill w/151b/bbl of Mix II Fine and Medium, continue drilling ahead using Mix II Fine and Medium LCM. WOB 15K, 206 gpm, 2317 psi on, 2212 psi off, tq on 17K, tq off 16K, PU 240K, SO 155K, ROT 180K. 01:30 - 04:30 3.00 DRILL P INTi Shut down pumps. Reciprocate pipe. Well breathing. 100 bbls recovered and flow gradually stopped. Mobilize 290 bbls 11.5 ppg mud from MI piant. Offload mud f/truck to pits. 04:30 - 05:00 0.50 DRILL P INT1 Pump 50 bbl LCM pill w/15 Ib/bbl of Mix II Fine and Medium, continue drilling ahead stringing in Mix II Fine and Medium LCM. 528 gpm, 2183 psi, 150 rpm, 15K WOB. Losing mud at 200 bbls/hr. Control drill 100 ftJhr. 05:00 - 06:00 1.00 DRILL P INT1 Increase ROP to 170 fph at 9885' and drill to 9907'. 528 gpm, 2183 psi, 150 rpm, 15K WOB. Losing mud at 200 bbls/hr. Shut down and monitor well. Lost 175 bbls and flowed back 120 bbls and then flow tapered off. 06:00 - 15:00 9.00 DRILL P INTi Driil directionally f/9907' to 10401'. 495 gpm, 2220 psi on, 2200 psi off, 18K tq on, 18K tq off, PU 265K, SO 160K, ROT 180K, 150 rpm. 12.3 ppg Calc ECD, 12.53 ppg Actual ECD. 15:00 - 16:30 1.50 DRILL P INT1 Circulate bottoms up for samples per geos. 500 gpm, 2200 psi. 16:30 - 16:45 0.25 DRILL P INTi Drill directionally f/10401' to 10415' and TD intermediate section per geos. 495 gpm, 2222 psi on, 2103 psi off, 18K tq on, 17K tq off, PU 260K, SO 160K, ROT 180K, 150 rpm. 16:45 - 18:00 1.25 DRILL P INTi Circulate bottoms up. 361 gpm, 1340 psi, 100 rpm. 18:00 - 19:30 1.50 DRILL P INT1 Monitor well. 150 bbls flowed back. Rate decreasing steadily. 19:30 - 22:00 2.50 DRILL P INTi Wiper trip, pump out of hole without backreaming to 9327'. Possible slight amount of swabbing, difficult to verify due to "breathing" flowback. 200 gpm, 520 psi. MW = 11.7 ppg. 22:00 - 23:00 1.00 DRILL P INT1 Monitor well. Well ffowing back. Flowback steadily decreasing. Allow to breathe. 23:00 - 23:30 0.50 DRILL P INT1 RIH f/9327' to 10415'. 23:30 - 00:00 0.50 DRILL P INT1 Circulate bottoms up. 400 gpm, 1350 psi, 100 rpm. Loss rate averaged 250 bbls/hr. white pumping. ADT f/24 hrs = 7.08 hrs. Progress f/24 hrs = 667'. Fluid lost to well f/24 hrs = 707 bbls. 6/9/2007 00:00 - 00:30 0.50 DRILL P INT1 Continue circulating bottoms up. 400 gpm, 1350 psi, 100 rpm, 16K tq. Printed: 6/28/2007 12620 PM ~ ~ Legal Well Name: 12-12 Common Well Name: 12-12 Spud Date: 7/2h981 Event Name: REENTER+COMPLETE Start: 5/26/2007 End: 6/20/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 6/20/2007 Rig Name: NABORS 7ES Rig Number: 6/9/2007 00:30 - 01:30 1.00 DRIIL P INT1 01:30 - 03:00 1.50 DRI~L P INT1 03:00 - 03:15 I 0251 DRILL I P I I INT1 03:15 - 06:00 I 2.751 DRILL I P I I INT1 06:00 - 11:30 I 5.501 DRILL I P I I INT7 11:30 - 13:00 1.50 DRILL P INT1 13:00 - 17:30 4.50 DRILL P INT1 17:30 - 21:00 I 3.50 ~ DRILL I P I I ~NTi 21:00 - 21:30 0.50 DRILL P INTi 21:30 - 23:30 2.00 DRILL P INT1 23:30 - 00:00 ~ 0.50I DRILL I P I I INTi 6/10/2007 100:00 - 02:00 I 2.001 DRILL I P I I INT1 02:00 - 02:15 0.25 DRILL P INTi 02:15 - 04:30 2.25 DRILL P INT1 04:30 - 05:30 1.00 DRILL P INT1 05:30 - 06:00 0.50 DRILL P INT1 06:00 - 07:00 1.00 DRILL P INT1 07:00 - 07:30 0.50 DRILL P INT1 07:30 - 09:00 1.50 DRILL P INT1 09:00 - 09:30 0.50 DRILL P INT1 09:30 - 11:00 1.50 CASE P INT1 11:00 - 12:30 I 1.501 CASE I P I I LNR1 12:30 - 18:00 5.50 CASE P LNR1 18:00 - 19:30 1.50 CASE P LNR1 19:30 - 00:00 I 4.50I CASE I P I I LNR1 6/11/2007 00:00 - 01:30 1.50 CASE P LNR1 01:30 - 02:30 1.00 CASE P LNR1 Monitor well. Flowed back 180 bbls. decreasing steadily. POH. Well swabbing and flowing back "breathing". Pump out of hole f/10415' to 9050' 172 gpm, 400 psi. Fluid levels in pits static during pump out. MW = 11.5 ppg. Monitor well. Flowed back 8 bbls. in 15 minutes. Flow decreasing. POH. Pump out of hole f/9050'. 175 gpm, 400 psi. MW = 11.5 ppg. Flowcheck at 8475'. Well static. Attempt to POH w/pumps off. Well swabbing. Pump out of hole through window at 3335' (w/no problem pulling through window) to 3290' with overpulls at 8850', 8735', 7514', 7425', 7405', 7305', 7240'. Backream at 7290'. Monitor well. Flowing back w/flow slowly decreasing. RIH f/3290' to 10415'. Took 8K drag at 3378' and 3460'. Took 50K down weight at 4567'. 35K down weight at 8923 thru 8948' and 9188' thru 9240'. Took 25K down weight at 9277'. Took 15K down weight at 9950'. Found no fill on bottom. Circulate and reciprocate f/10415' to 10189'. Rack back one stand each hour and continue CBU x 3. 504 gpm, 2077 psi, 150 rpm, 17K tq, 280K PU, 140K SO, 180K ROT. Circulate/blend 290 bbls fresh 11.5 ppg LSND mud to well. See large amounts of LCM and some splintered shale. Shut down pumps. Fluid loss average f/CBU x 3= 60 bbls/hr. RIH to 10415'. Found no fil-. Record SPRs and pump out of hole f/10415' to 9337'. 150 gpm, 360 psi, 235K PU, 150K SO. Monitor well for breathing and see 8bb1 gain in 1/2 hr. w/flow decreasing. Attempt to POH w/pumps off. 260K PU, 177K SO. Well swabbing. Pump out of hole f/9337' to 7685'. 150 gpm, 250 psi. No tight spots. MW = 11.5 ppg. Pull 4 stands f/7685' to 7265' w/pumps off. Well swabbing. Pump out of hole f/7265' to 4820'. 150 gpm, 250 psi. No tight spots. POH w/pumps off f/4820' to 3296' above window at 3335'. Monitor well and pump dry job. POH to BHA at 833'. Monitor well. LD 5" heavyweight drill pipe. LD 8-1/2" Rotary Steerable BHA #8 and clear floor. Pull and inspect wear bushing. RU and install 7" rams. Test ram doors to 250 psi low pressure and 3500 psi high pressure. Pull test plug. Install wear bushing. RU to RIH w/7" 26# ~-80 BTC-M/TC-II liner. RIH w/7" liner to 3277' at 40'/min per running schedule. Circulate liner volume x 1.5, 114 gpm, 176 psi. at window before running into OH. Partial losses. RIH w/7" 26 # liner f/3277' to 6563' at 40 ft/min to minimize mud losses. Total mud lost to well bore running liner to 6563' _ 98 bbls. RIH w/7" Iliner f/6563' to 7185'. PU 205K, SO 130K. PU and RIH w/7' liner top packer/liner hanger and C-2 liner running tool. Attempt to pump bottoms up x 1.5 per plan Printed: 6/28/2007 1:2620 PM ~ ~ Legal Well Name: 12-12 Common Well Name: 12-12 Spud Date: 7/2/1981 Event Name: REENTER+COMPLETE Start: 5/26/2007 End: 6/20/2007 Contractor Name: NABORS ALASKA DRILLING i Rig Release: 6/20/2007 Rig Name: NABORS 7ES Rig Number: 6/11/2007 01:30 - 02:30 1.00 CASE P LNR1 forward. Pump 90 bbls 11.5 ppg mud at 150 gpm, 425 psi. 6 bbls returned. Consult w/ODE/town team. Decision made to ~, continue running in hole at 2.5 mins/40 ft. per schedule. i 02:30 - 07:00 4.50 CASE P LNR1 RIH f/6563' to 10415'. Filling every 10 stands. Fluid losses averaging 20 bbls/hr. Washed down last stand to TD at 10415'. PU 1' to 10414'. PU 285K, SO 125K. 07:00 - 07:30 0.50 CEMT P LNR1 RU cement head and lines. PJSM w/WSL, tourpusher, Schlumberger, all hands. 07:30 - 09:00 1.50 CEMT P LNR1 Circulate 11.5 ppg LSND mud, 90 gpm, 630 psi. 2% returns. PU 310K. Unable to move pipe f/10414'. 09:00 - 13:00 4.00 CEMT P LNR1 Pump 5 bbls of H20 w/Schlumberger through lines to floor and out Tee to washup hose. Test lines to 4K psi. Walk lines. OK. Pump 11.6 ppg Mudpush/Cemnet to floor w/washup tee open. No H20 downhole. Close washup tee valve and pump 22 bbls Mudpush/1 Ib/bbl Cemnet spacer down driilpipe. Mix and pump 219 bbis. of 11.8 ppg CemCrete Lite lead cement w/additives and 1 Ib/bbi Cemnet. Mix and pump 23 bbls of 15.8 ppg tail slurry w/additives and 2 Ibs/bbl Cemnet. Shut down and drop drill pipe wiper dart. Pump 5 bbls of displacement H20 w/Schlumberger to clear cement f/lines. Switch to rig pumps and continue displacement of cement w/319 bbis (5615 stks.) 11.5 ppg LSND mud. Average displacement rate = 3 bpm. See wiper dart pickup liner wiper plug w/pressure increase f/500 psi to 1500 psi and back to 500 psi. Continue displacement. Slow displacement rate to 1.5 bbl/min. FCP = 875 psi. Bump plug, CIP at 13:00 hrs. Poor mud returns. 2% average w/occasional increase to 11 % dropping back to 2%. 13:00 - 13:45 0.75 CEMT P LNRi Pressure up to 2900 psi to shear and set Flex-Lok liner hanger. SO 40K to check hanger set. OK. Pressure up to 4100 psi to actuate ZXP packer setting tooi. Bleed pressure to 0 and check floats. OK, no fiow back. Pressure drill pipe to 1000 and pick up siowly 8' untii pressure bled to zero indicating packoff bushing clear of tie back sleeve and rotating dog sub clear of extension sleeve. Circulate 50 bbis mud to bring cement above liner top. Slack off 45K on rotating dog sub. Saw good indication at floor that ZXP packer set. PU clear of liner top and circulate 240 bbls, 339 gpm, 696 psi. No indication of cement returns coming above liner top seen at surface. 575 bbls mud lost to formation during cementing. Saw ph spike in fluid back to surface found some Cemnet fibers in mud. 13:45 - 14:30 0.75 CEMT P LNR1 RD cement head and clear floor. 14:30 - 15:15 0.75 CEMT P LNR1 Dispiace mud w/seawater f/3167' to surface. 283 gpm, 110 psi. 15:15 - 19:00 3.75 CEMT P LNR1 Monitor well. MW = 8.5 ppg. POH laying down 5" drili pipe 1 x 1. 19:00 - 19:15 0.25 CEMT P LNRi LD liner running tools. Brass screws sheared on rotating dog sub. 19:15 - 21:30 2.25 BOPSU P LNR1 Pull and inspect wear bushing. Set test plug. Change top rams Printed; 6/28/2007 126:20 PM ~ ~ Legal Well Name: Common Well Name: Event Name: Contractor Name: Rig Name: 12-12 12-12 REENTER+COMPLETE NABORS ALASKA DRILLING I NABORS 7ES Spud Date: 7/2/1981 Start: 5/26/2007 End: 6/20/2007 Rig Release: 6/20/2007 Rig Number: 6/11/2007 I 19:15 - 21:30 21:30 - 22:30 1.00 BOPSU~ P 22:30 - 00:00 1.50 BOPSU P 6/12/2007 00:00 - 03:30 03:30 - 04:30 04:30 - 11:30 11:30 - 12:00 12:00 - 13:00 13:00 - 18:00 18:00 - 19:00 19:00 - 20:30 20:30 - 22:30 22:30 - 23:00 23:00 - 00:00 6/13/2007 00:00 - 00:30 LNR1 to 3.5" x 6" variable rams. CO top drive IBOP and saver sub to 4" HT-40. LNR1 RU for BOP test. LNR1 BOP test. High pressure 3500 psi, low pressure 250 psi. AOGCC rep Jeft Jones waived AOGCC presence at test. W itnessed by Lenward Toussant, Nabors tourpusher and Lowell Anderson, BP WSL. LNR1 Continue w/BOP test 3500 psi high pressure, 250 psi low pressure. LNRi Test 7" liner x 9-5/8" casing to 3500 psi f/landing collar/plugs at top of shoe track at 10288' to surface. Record for 30 minutes on chart. LNR1 RIH w/5" drill pipe from derrick to 3100'. POH and LD same 1 x 1. Repeat. LD 213 jts of 5" drill pipe. LNR1 Pull and inspect wear ring. TIE61 RU casing running and torque/turn recording equipment. TIE61 RUN 7" 26 # L-80 TC-II w/tieback stem to top of liner tieback sleeve at 3213'. TIEB1 CO short to long bails to handle cement head. Check and load upper and lower plugs into cement head. RU cement head. 2251 BOPSUFi P 3.50 BOPSU P 1.00 BOPSU P 7.00 CASE P 0.50 CASE P 1.00 CASE P 5.00 CASE P 1.00 CEMT P 1.50 CEMT P TIEB1 Sting into tieback sleeve at 3213' and land on NO GO on tieback stem. Mark casing. Pressure to 500 psi and hold 3 min. Seals in place and holding. Bleed pressure to 0. PU 8' per Baker rep to expose four 1" ports in tieback stem for cementing. Pump 3 bbls around and check for full circulation. 2.00 CEMT P TIE61 PJSM w/Schlumberger, Hot Oii, tourpusher, WSL, mudmen, ali hands. Take all returns down fiow line and across drag chain until switch to rig pumps for displacement. Pump 5 bbls H20 w/Schlumberger and pressure test all lines w/Schlumberger and Hot Oil to 4000 psi. Pump 10 bbls Mudpush spacer w/red dye w/Schlumberger at 2.5 bbl/min. Switch valves to Hot Oil Service and pump 75 bbls of 80 deg. diesel, 5 bbls/min. Shut down. Switch valves to Schlumberger. Drop bottom plug. Pump 12.8 bbls 15.8 ppg class "G" tail slurry plus additives. Drop top plug. Pump 5 bbls of H20 displacement w/Schlumberger. Shut down pumps. Switch to rig pumps. Ciose Annular BOP, open annulus valve and take returns via 2" hose direct to cuttings box to avoid diesel in pits. Pump additional 118 bbls of clean seawater displacement w/rig pumps at 6 bbls/min slowing to 3 bbls/min last 5 bbls. Bump plug on schedule and pressure to 600 psi. Shut down pumps. Slack off and bleed back pressure to sting tie back stem in to No Go and casing landing mark. CIP at 22:14 hrs. Saw 10 bbls of Mudpush w/red dye and 3 bbls diesel retumed to surface. Check 7" casing and 7" x 9-5/8" annulus for flowback. None. 0.50 CEMT P TIE61 RD casing running equipment, blow down lines, lay down cement head. Check cement head. Both plugs gone. 1.00 BOPSU P TIEB1 Drain BOP stack. ND BOP stack. 0.50 BOPSU P TIEB1 ND BOP stack and PU and install slips on 7" casing. Per Printed: 6/28/2007 126:20 PM , ~ ~ Legal Well Name: 12-12 Common Well Name: 12-12 Spud Date: 7/2/1981 Event Name: REENTER+COMPLETE Start: 5/26/2007 End: 6/20/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 6/20/2007 Rig Name: NABORS 7ES Rig Number: 6/13/2007 00:00 - 00:30 0.50 BOPSU P TIEB1 00:30 - 01:00 0.50 BOPSU P TIEB1 01:00 - 02:00 1.00 BOPSU P TIEB1 03:30 - 04:00 0.50 BOPSU P TIEB1 04:00 - 06:00 2.00 BOPSU P TIEB1 06:00 - 07:00 1.00 BOPSU P TIEB1 07:00 - 08:00 1.00 BOPSU P TIE61 08:00 - 11:00 3.00 DRILL P PROD1 11:00 - 11:30 0.50 DRILL P PROD1 11:30 - 12:00 0.50 DRILL P PROD1 12:00 - 14:45 2.75 DRILL P PROD1 14:45 - 15:15 I 0.501 DRILL I P I I PROD1 15:15 - 16:30 1.25 DRILL P PRODi 16:30 - 18:45 2.25 DRILL P PROD1 18:45 - 20:45 2.00 DRILL P PROD1 20:45 - 22:00 125 DRILL P PROD1 22:00 - 00:00 2.00 DRILL P PROD1 6/14l2007 00:00 - 00:30 0.50 DRILL P PROD1 00:30 - 01:30 1.00 DRILL P PROD1 01:30 - 02:30 1.00 DRILL P PROD1 02:30 - 03:30 1.00 DRILL P PROD1 03:30 - 04:30 1.00 DRILL P PROD1 Cameron representative, SO 67K on slips. Stand back BOP. Install packoff. Install new 13-5/8" x 13-5/8" tubing spool. RU and make casing cut w/Wachs cutter. Cameron spacer rings f/packoff previously milied out still too tight. Would not fit on casing. Send to Baker and re-mill to proper specifications. Test packoff f/30 min. to 4300 psi. via externtal test port. NU BOP stack to flange. Have welder modify bell nipple. Body test on BOP and tubing spool upper flange. Recorder bad. Change out recorder and retest. Install wear bushing. MU BHA #9 w/Hughes ATJ-4 bit, near bit stab, NM flex drill collar, NM stab, NM flex drili collar x 2, hydraulic jars, XO to 4" HT40 drill pipe. BHA = 135'. PU 4" HT-40 drill pipe 1 x 1. RIH f/135' to 3139'. Tag up on cement stringers above piugs. RU and test above tieback landing collar to surface at 3300 psi. Hold 5 min. RD test equipment. Drill stringers down to plugs at 3196'. 230 gpm, 340 psi, 75 rpm, 2K tq, PU 75K, SO 73K, ROT 75K. Drill plugs down to 3198' and drill tieback landing collar/float collar f/3198' to 3201'. 357 gpm, 747 psi, 100 rpm, 20K WOB, 3K tq, 75K PU, 75K SO, 75K ROT. REAM/BACKREAM through tieback float equipment area f/3190' to 3228'. 357 gpm, 747 psi, 100 rpm, 75K PU, 75K SO, 75K ROT. PU and RIH 4" drili pipe f/3228' to 4535'. D-1 drill. 2 min. CRT. Stripping drill w/WSL, toolpusher, crew. BD choke, kill lines, choke manifold. PU 4" HT-40 driil pipe and RIH f/4535' to 7299'. Fill drill pipe w/seawater. Hole out of balance. Circulate 11.5 ppg mud OOH. 213 gpm, 430 psi. PU and RIH w/4" drili pipe f/7299' to 10173'. RIH f/10173' to 10290' Tag stringers. Fill drill pipe. RU and test 7" intermediate casing f/10290' to surface. 3500 psi. w/chart f/30 minutes. Drill cement stringers and tag plug above insert landing coliar at 10325'. Drili shoetrack f/10325' to 10405'. Circulate and swap seawater over to 8.4 ppg Flo-Pro mud system. 350 gpm, 1675 psi. 04:30 - 05:00 0.50 DRILL P PROD1 05:00 - 06:00 1.00 DRILL P PROD1 06:00 - 10:00 4.00 DRILL P PROD1 10:00 - 10:30 0.50 DRILL P PROD1 10:30 - 11:30 1.00 BOPSU P PROD1 11:30 - 12:30 1.00 DRILL P PROD1 12:30 - 13:00 I 0.50 ~ BOPSUp P ~ I PROD1 Drill out f/10405' thru shoe at 10414' to 10418'. CBU 345 gpm 1390 psi. Overboard cement contaminated mud to cuttings box. POH. MW = 8.4 PP9• LD cleanout BHA #9. Function test BOP. Install wear bushing. Jet stack. PJSM. PU BHA # 10 w/Hughes 6-1/8" MX 18-HDX ser # 5114743, Short Pac 2.29 deg. motor .7 gpm/rev, bypass sub (w/float), NM flex lead drill collar, Impuise MWD, NM XOs, NM Flex drill collars x 3, hydraulic jars, ball catcher, CCV, XO to 4" HT-40 drill pipe. BHA OAL = 206.80'. Pull, check, and reinstali wear bushing. Printed: 6/28/2007 126:20 PM . ~ Legal Well Name: 12-12 Common Well Name: 12-12 Spud Date: 7/2/1981 Event Name: REENTER+COMPLETE Start: 5/26/2007 End: 6/20/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 6/20/2007 Rig Name: NABORS 7ES Rig Number: 6/14/2007 13:00 - 14:30 1.50 DRILL P 14:30 - 17:30 3.00 DRILL P 17:30 - 21:30 4.00 DRILL P 21:30 - 22:00 0.50 DRILL P 22:00 - 23:15 125 DRILL P 23:15 - 00:00 0.75 DRILL P 6/15/2007 100:00 - 09:00 I 9.001 ORILL I P 09:00 - 10:00 1.00 DRILL P 10:00 - 11:00 1.00 DRILL P 11:00 - 15:00 I 4.001 DRILL I P 15:00 - 16:00 I 1.001 DRILL I P 16:00 - 17:30 1.50 BOPSU P 17:30 - 19:30 2.00 DRILL P 19:30 - 00:00 4.50 DRILL P 6/16/2007 00:00 - 01:00 1.00 DRILL P 01:00 - 02:00 1.00 DRILL P 02:00 - 02:30 0.50 DRILL P 02:30 - 00:00 21.50 DRILL P 6/17/2007 100:00 - 06:00 I 6.001 DRILL I P 06:00 - 17:00 I 11.001 DRILL I P PROD1 Continue to PU BHA # 10. PRODi PJSM w/Schlumberger and crew. PU and RIH w/4" HT-40 drill pipe 1 x 1 f/266' to 2884'. Surface test MW D at 876'. PROD1 RIH w/stands f/derrick f/2884' to 10414'. PROD1 Slide and drill directionally f/10418' to 10435'. 255 gpm, 1621 psi on, 1507 psi off, 180K PU, 140K SO. PROD7 CBU 271 gpm, 1632 psi, 230 bbls. PROD1 PU into casing at 10400'. Perform and chart FIT w/new 6-1/8" open hole drilled f/10415' to 10435', 8718' TVD, 8.4 ppg mud, 9.5 EMW w/499 psi at surface. PROD1 Slide and drill directionaily f/10435' to 10661' w/2.29 Short Pac motor BHA #10. 280 gpm, 1840 psi on, 1660 psi off, 180K PU, 138K SO, WOB 15K-25K. PROD1 Pump out of hole to 10337' MW = 8.4 ppg. Drop bali for CCV, pump down at 85 gpm, 648 psi, shear CCV at 2150 psi. PROD1 Circulate 375 bbls/1.5 BU, 500 gpm, 1850 psi. Monitor weil. Pump dry job. PROD1 POH f/10337' to 302'. Drop 1.76" bail to CCV. Close CCV w/1800 psi. Pump and confirm closing of CCV. Circulate 100 gpm, 200 psi. PROD1 LD 2.29 deg motor driliing BHA #10. Stand back flex collars in derrick. Clear and clean floor. PROD1 Pull 9-3/16" wear ring. Install 6-1/4" wear ring. Up load MWD. PROD1 PJSM on nuke safery w/Schiumberger, crew, WSL, tourpusher. RIH w/ BHA #11 w/Hycalog bit 6-1/8" DSX-613M-B4 s/n 113684, XP AIM Motor 1.50 deg bend, bypass sub wJfloat, NM stabilizer, NM Flex lead drill coilar, Impulse MWD, ADN4, 3 NM Fiex drill collars, hydraulic jars, ball catcher, CCV, XO to 4.00 HT-40 drill pipe. BHA OAL = 240.60'. PROD1 RIH f/ 241' and attempt shallow test MWD at 719'. Unsuccessful. RIH and shallow test MWD at 1197'. 270 gpm, 860 psi. RIH fiiling drill pipe every 2500' to 10414'. PROD1 PJSM. Cut and slip drilling line. Service top drive. PROD1 RIH f/10414' to 10661'. Per geos, log uphole w/ADN positioned at 10576' to ADN depth of 10398', bit depth 10499', 250 gpm, 1510 psi, 178'/hr. PROD1 RIH f/bit depth of 10499' to 10661'. PROD1 Slide/drill directionally in Sag River sand f/10661' to 11429'. 10661' Sliding = 280 gpm, 1940 psi on, 1780 psi off, 180K PU, 140K SO, WOB 12K-25K. MW = 8.4 ppg. 11429' Rotating = 282 gpm, 1985 psi on, 1820 psi off, 180K PU, 133 SO, ROT 145K, rpm 60, tq on 6.5K, tq off 5K. WOB 5K-15K. MW = 8.5 ppg. ADT f/24 hrs = 15.17 hrs. AST = 13.45 f/24 hrs. ART = 1.72 f/24 hrs. Progress f/24 hrs = 768'. PROD1 Slide/driil directionally In Sag River sand f/11429' to 11850'. 280 gpm, 2250 psi on, 2080 psi off, 184K PU, 143K SO, TQ on 8K, TQ off 6.5K, WOB 12K-25K. MW = 8.5 ppg. PROD1 Slide/drill directionally in Sag River sand f/11850' to 12650'. 290 gpm, 2235 psi on, 1980 psi off, 190K PU, 135K SO, 145K Printed: 6/28/2007 126:20 PM i i ILegal Well Name: 12-12 Common Well Name: 12-12 Spud Date: 7/2/1981 Event Name: REENTER+COMPLETE Start: 5/26/2007 End: 6/20/2007 Contractor Name: NABORS ALASKA DRILLING i Rig Release: 6/20/2007 Rig Name: NABORS 7ES Rig Number: 6/17/2007 06:00 - 17:00 11.00 DRILL P PROD1 ROT, TQ on 9K, TQ off 5K, WOB 12K. MW = 8.5 ppg. 17:00 - 21:30 4.50 EVAL P OTHCMP MADPass bit depths: f/12650' to 10900', 300 gpm, 2050 psi, 600'-720'/hr, 100 rpm, 5K tq. 21:30 - 22:30 1.00 DRILL P PROD1 Pump out of hole f/10900' to shoe at 10415'. Drop 1.76" CCV ball and pump down at 85 gpm, 560 psi, to seat while pulling last stand to position bit above shoe. 22:30 - 00:00 1.50 DRILL P PROD1 Pressure up on ball and CCV opened at 1900 psi, 38 bbls. Stage pumps up to 400 gpm, 1420 psi and CBU x 2, 100 gpm, 475 psi. 25% increase in cuttings noted across shakers. Monitor well f/15 minutes. MW = 8.6 ppg in and out. 6/18/2007 00:00 - 04:00 4.00 DRILL P PROD1 POH to BHA #11. Drop closing bail and cycle CCV. 04:00 - 06:00 2.00 DRILL P PROD1 PJSM w/Schlumberger, WSL, tourpusher, all hands on nuke safety. LD final drilling BHA #11. 06:00 - 07:00 1.00 CASE P RUNPRD PJSM. w/WSL, toolpusher, all hands. RU to run 4.5" 12.6"# IBT slotted/solid liner. 07:00 - 10:30 3.50 CASE P RUNPRD RIH w/f4.5" IBT float shoe/slotted liner/ Swell Packe/solid liner to 2375'. 10:30 - 11:00 0.50 CASE P RUNPRD MU 5" x 7" HMC/ZXP liner hanger/liner top packer to liner and verify abiliry to circulate by pumping through tools 3bpm, 160 psi. PU 53K, SO 53K. 11:00 - 15:30 4.50 CASE P RUNPRD Run liner in hole w/4" HT-40 drill pipe f/2375' to 10414'. No difficulty getting liner down. 15:30 - 17:30 2.00 CASE P RUNPRD Break circulation. 2 bpm, 425 psi, 3 bpm, 525 psi, 4 bpm 650 psi, pump 81 bbls. around 1 st slotted liner jt back up annulus. PU 165 K, SO 137K, ROT 155K. 17:30 - 18:00 0.50 CASE P RUNPRD RIH and tag bottom at 12652'. PU to setting depth of 12648'. Drop 1.75" ball, MU top drive and stage pumps up, 1 bpm at 175 psi, 2 bpm at 510 psi, 3 bpm at 610 psi, 4 bpm, 780 psi. See ball hit seat and pressure up to 1900 psi, SO liner wt + 20K on hanger. Continue to pressure up to 3900 psi to actuate pusher tool. PU 8' to clear rotating dog sub f/ZXP packer extension sleeve. Left stinger in RS stuffing box/RS nipple for 1500 psi annulus pressure test. 18:00 - 20:30 2.50 CASE P RUNPRD Make two attempts to test annulus stung into RS nipple/RS stuffing box. Pressure up to 1500 psi and pressure bled back to 500 psi. SO 35K on packer and feel dog sub shear. PU 165K, SO 150K. SO putting 65K on packer. Check out surface equipment. OK. Pressure up 2nd try to 1500 psi w/bleed back to 700 psi. Check for flow back up drill pipe out stand pipe bieeder hose and had flow back up drill pipe. Test down driil pipe against ball/bail seat, RS stuffing box seals, HMC hanger setting port, and pusher tool to 4000 psi. and draw line on chart. Consult w/town team. 20:30 - 22:30 2.00 CASE P RUNPRD MW = 8.5 ppg. PU and POH and place stinger at 10123'. Circulate 100 bbl freshwater spacer and then displace Flo-Pro mud to 8.5 ppg seawater. 417 gpm, 1893 psi. Circulate until clean across shakers. 22:30 - 00:00 1.50 CASE P RUNPRD Monitor well f/15 min. Static. MW = 8.5 ppg in and out. POH laying down 4" HT 40 drill pipe 1 x 1. 6/19/2007 00:00 - 08:00 8.00 CASE P RUNPRD LD 4" HT-40 drill pipe 1 x 1. 08:00 - 09:30 1.50 RUNCO RUNCMP R/U to Torque Turn 4 1/2" Tbe completion string. Make dummy run w/ Hanger. PJSM w/ WSL, TP, Baker rep and rig crew. Printed: 6/282007 1:2620 PM ~ • Legal Well Name: Common Well Name Event Name: Contractor Name: ~, Rig Name: 6/19/2007 I 09:30 - 22:30 12-12 12-12 REENTER+COMPLETE NABORS ALASKA DRILLING I NABORS7ES 13.00 22:30 - 00:00 1.50 6/20/2007 00:00 - 00:30 0.50 ~i~ 00:30 - 02:00 1.50 02:00 - 03:30 1.50 Start: 5/26/2007 Rig Release: 6/20/2007 Rig Number: RUNCMP RUNCMP RUNCMP RUNCMP RUNCMP 03:30 - 04:00 0.50 BOPSU P RUNCMP 04:00 - 05:30 1.50 BOPSU P RUNCMP 05:30 - 06:30 1.00 WHSUR P RUNCMP 06:30 - 07:30 1.00 WHSUR P RUNCMP 07:30 - 08:00 0.50 WHSUR P RUNCMP 08:00 - 08:30 0.50 W HSUR P RUNCMP 08:30 - 09:30 1.00 WHSUR P RUNCMP 09:30 - 10:30 1.00 WHSUR P RUNCMP 10:30 - 11:30 1.00 WHSUR P RUNCMP 11:30 - 15:00 3.50 WHSUR P RUNCMP Spud Date: 7/2/1981 End: 6/20/2007 Run 4 1/2", 12.6 Ib/ft, Vam Top 13 Chrome Tbe comptetion string. Optimum Torque = 4,440 ft/Ibs. Min Tq = 4,000 fUlbs & Max Tq = 4,880 ft/Ibs. Will Utilize: Jet Lube Seal Guard thread compound for chrome Tbg. Baker Lok on all connections below the Baker S-3 packer (7" x 4 1 /2"). PU wt= 136K, SOW= 107K. Seawater wt= 8.5 ppg Tag No-Go ~ 10,254' md. UD 2 jts Tbg. M/U Space out pups. M/U Tbg Hanger and Land same. Space out= 3.74' above No-Go. RILDS. Back out landing joint. Reverse circulate in 76 bbls of Inhibited Seawater followed by 115 bbls of untreated Seawater(3 bpm / 220 psi). Drop ball and rod. Allow to drop 10 minutes. PT Tbg to 3500 psi f/ 30 min - OK - Bieed off Tbg pressure to 1500 psi. PT annulus to 3500 psi f/ 30 min - OK - Bleed off annulus pressure. Bleed off Tbg pressure. PT annulus to 2500 psi to shear DCK valve. Pump both ways to confirm ability to freeze protect.i Install TWC. PT from below to 1000 psi f/ 5 min - OK. N/D BOPE. N/U Adaptor flange and Tree. Test Adaptor flange and Tree to 5000 psi f/ 30 min. - OK. P/U lubricator and pull TWC. R/U to freeze protect. PT lines to 4000 psi. PJSM w/ Little Red~ Services. Reverse in 75 bbls of diesel @ 6.8 ppg / 85 degrees F. Allow well to U-tube. R/D U-tube equipment. Install BPV w/ lubricator. Test to 1000 psi f/ 5 min - OK. Install Tree cap and gauges. Clean and secure well. Remove excess fluids from pits and rotary table. Release Rig from DS 12-12A ~ 15:00 hrs on 06-20-2007 Printed: 6/28/2007 12620 PM bp DS12-12A Su Report Date: 17-Jun-07 Client: BP Exploration Alaska Field: Prudhoe Bay Unit - EOA Structure/Slot: DS-12/12•12 Well: 12-12 Borehole: 12-12A UWI/API#: 500292061001 Survey Name / Date: 12-12A / June 17, 2007 Tort /AHD! DDI / ERD ratio: 283.476° / 6799.14 ft/ 6.446 / 0.778 Grid Coordinate System: NAD27 Alaska State Planes, Zone 04, US Feet Location LatlLong: N 70.21659144, W 148.41208822 Location Grid wE Y/X: N 5931326.500 ftUS, E 696842.950 ftUS Grid Convergence Angle: +1.49423528° Schlumberger Report Vertiwl Section Azimuth: 316.370° Vertical Section Origln: N 0.000 ft, E 0.000 ft ND Reference Datum: Rotary Table ND Refeience Elevation: 70.84 ft relative to MSL Sea Bed / Ground Level Elevation: 40.88 ft relative to MSL Magnetic Declination: 23.868° ToWI Field Strength: 57656.003 nT Magnetic Dip: 80.887° Declination Date: June 01, 2007 Magnetic Declination Model: BGGM 2007 ~ North Reference: True North Total Corr Mag North •> True North: +23.868° Local Coordinates Reterenced To: Well Head Comments Measured ~nclination Azimuth SubSea ND ND Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de fl n n ft ft n n de 100 it ftUS ftUS ~"1~t U.UU U.UU U.UU -N.2f4 U.UU U.UU U.UU U.VV U.UV V.VU V.VV ~`JJ13ZU.OV O`J084L.y0 IV /V.L109:1144 VV 148.41LVOaLL CB Gyro MS 99.84 0.00 0.00 29.00 99.84 0.00 0.00 0.00 0.00 0.00 0.00 5931326.50 696842.95 N 70.21659144 W 148.41208822 199.84 0.00 0.00 129.00 199.84 0.00 0.00 0.00 0.00 0.00 0.00 5931326.50 696842.95 N 7021659144 W 148.41208822 299.84 0.00 0.00 229.00 299.84 0.00 0.00 0.00 0.00 0.00 0.00 5931326.50 696842.95 N 70.21659144 W 148.41208822 399.84 0.00 0.00 329.00 399.84 0.00 0.00 0.00 0.00 0.00 0.00 5931326.50 696842.95 N 70.21659144 W 148.41208822 499.84 0.00 0.00 429.00 499.84 0.00 0.00 0.00 0.00 0.00 0.00 5931326.50 696842.95 N 70.21659144 W 148.41208822 599.84 0.00 0.00 529.00 599.84 0.00 0.00 0.00 0.00 0.00 0.00 5931326.50 696842,95 N 70.21659144 W 148.41208822 699.84 0.00 0.00 629.00 699.84 0.00 0.00 0.00 0.00 0.00 0.00 5931326.50 696842.95 N 70.21659144 W 148.41208822 799.84 0.00 0.00 729.00 799.84 0.00 0.00 0.00 0.00 0.00 0.00 5931326.50 696842.95 N 7021659144 W 148.41208822 899.84 0.00 0.00 829.00 899.84 0.00 0.00 0.00 0.00 0.00 0.00 5931326.50 696842.95 N 70.21659144 W 148.41208822 999.84 0.50 95.52 929.00 999.84 -0.33 0.44 0.44 -0.04 0.43 0.50 5931326.47 696843.39 N 70.21659133 W 148.4120 1099.84 0.00 180.00 1029.00 1099.84 -0.66 0.87 0.87 -0.08 0.87 0.50 5931326.44 696843.82 N 70.21659121 W 148.4120~ 1199.84 0.50 156.47 1129.00 1199.84 -1.07 1.31 1.15 -0.48 1.04 0.50 5931326.04 696844.01 N 7021659012 W 148.412079 0 1299.84 0.00 0.00 1228.99 1299.83 -1.48 1.75 1.50 -0.88 1.22 0.50 5931325.65 696844.19 N 7021658903 W 148.41207840 1399.84 0.00 0.00 1328.99 1399.83 -1.48 1.75 1.50 -0.88 1.22 0.00 5931325.65 696844.19 N 70.21658903 W 148.41207840 1499.84 0.00 0.00 1428.99 1499.83 -1.48 1.75 1.50 -0.88 1.22 0.00 5931325.65 696844.19 N 70.21658903 W 148.41207840 1599.84 1.00 122.92 1528.99 1599.83 -2.33 2.62 2.38 -1.36 1.95 1.00 5931325.19 696844.93 N 70.21658773 W 148.41207249 1699.84 0.50 138.28 1628.98 1699.82 -3.61 3.92 3.67 -2.16 2.97 0.53 5931324.42 696845.98 N 70.21658554 W 148.41206424 1799.84 1.00 139.65 1728.97 1799.81 -4.92 5.23 4.96 -3.15 3.83 0.50 5931323.45 696846.86 N 70.21658284 W 148.41205734 1899.84 1.00 99.02 1828.96 1899.80 -6.49 6.90 6.57 -3.95 5.25 0.69 5931322.69 696848.31 N 70.21658065 W 148.41204584 1999.84 0.00 0.00 1928.95 1999.79 -7.18 7.77 7.36 -4.09 6.12 1.00 5931322.57 696849.17 N 70.21658027 W 148.41203888 2099.84 1.00 42.92 2028.95 2099.79 -7.13 8.65 7.54 -3.45 6.71 1.00 5931323.23 696849.75 N 70.21658202 W 148.41203409 2199.84 0.00 0.00 2128.94 2199.78 -7.07 9.52 7.83 -2.81 7.30 1.00 5931323.88 696850.33 N 7021658376 W 148.41202930 SurveyEditor Ver SP 2.1 Bld( doc40x_100 ) 12-12\12-12\12-12A\12-12A Generated 6/28/2007 2:00 PM Page 1 of 6 Comments Measured Inclination Azimuth SubSea ND ND Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude' Depth Section Departure ft de de tt ft ft tt ft n n de 00 ft itUS ftUS 'L'Ly`J.t34 U./b l:i/.b:f LLLt5.y4 'L'L`J`J./Lf -/./3 lU.l/ 2399.84 1.00 148.00 2328.93 2399.77 -9.24 11.70 2499.84 1.00 143.37 2428.91 2499.75 -10.96 13.44 2599.84 0.75 150.63 2528.90 2599.74 -12.46 14.97 2699.84 0.50 148.78 2628.90 2699.74 -13.52 16.06 2799.84 1.00 168.95 2728.89 2799.73 -14.68 17.35 2899.84 3.75 316.12 2828.83 2899.67 -12.14 20.32 2999.84 6.75 305.33 2928.40 2999.24 -3.10 29.44 3099.84 10.00 299.65 3027.32 3098.16 10.98 43.99 3199.84 13.00 293.12 3125.31 3196.15 29.64 63.91 Tie-In survey 3299.84 14.50 291.43 3222.44 3293.28 51.33 87.67 Top Window Inc+Trend 3318.00 14.99 291.89 3240.00 3310.84 55.52 92.29 Bottom Window 3335.00 17.03 291.89 3256.34 3327.18 59.79 96.98 3360.00 17.03 291.89 3280.24 3351.08 66.45 104.31 341728 16.27 299.00 3335.13 3405.97 81.75 120.70 3508.30 18.95 308.00 3421.89 3492.73 108.55 148.18 First MWD+IFR+MS 3604.62 22.48 313.00 3511.98 3582.82 142.42 182.23 C.4Z -3,Z`J /./D V./J D`J313Z3.41 b`Jb6OV./8 IV N.LIO~LfZ44 VV 146.41LVL0/4 9,76 -4.52 8.65 0.29 5931322.21 696851.71 N 70.21657910 W 148.41201845 11.33 12.73 13.72 14.79 12.21 3.11 11.52 31.41 55.13 59.75 64.43 71.75 88.13 115.30 148.55 3698.03 23.22 325.67 3598.11 3668 .95 178.44 218. 37 3793.18 24.38 338.06 3685.22 3756 .06 215.22 256. 65 3887.70 27.09 341.86 3770.36 3841 20 252.79 297. 67 3981.54 29.70 341.23 3852.90 3923 .74 293.17 342. 29 4075.41 32.88 340.59 3933.11 4003 .95 337.52 391. 04 182.94 217.30 253.15 293.22 338.50 -5.96 -7.23 -8.17 -9.40 -7.90 -2.14 5.55 14.27 23.26 24.96 26.71 29.44 36.46 5t.75 73.94 101.35 135.07 173.63 215.95 262.02 9.63 10.47 11.02 11.41 9.31 2.25 -10.09 -27.99 -49.99 -54.28 -58.63 -65.43 -80.23 -103.03 -128.84 -152.30 -17022 -184.22 -198.35 -214.31 4167.89 34.23 340.08 4010.18 4081.02 384.23 442.15 387.03 310.15 -231.51 4262.68 35.68 339.87 4087.87 4158.71 434.00 496.46 439.32 361.17 -250.11 4355.48 38.16 341.28 4162.05 4232.89 484.82 552.20 493.30 413.74 -268.63 4450.98 37.63 345.09 4237.43 430827 537.16 610.84 549.86 469.87 -285.60 4544.30 38.16 349.41 4311.08 4381.92 586.32 668.15 604.44 525.74 -298.23 4638.93 37.83 353.75 4385.67 4456.51 633.89 726.38 659.08 583.34 -306.77 4732.30 37.76 353.05 4459.45 453029 679.57 783.60 712.75 640.18 -313.34 4828.32 39.10 353.00 4534.67 4605.51 727.45 843.28 769.39 699.42 -320.59 4923.52 39.93 352.49 4608.11 4678.95 776.22 903.86 827.40 759.50 -32824 5016.87 40.35 351.73 4679.47 4750.31 825.07 964.03 885.54 819.11 -336.50 5111.93 39.62 350.46 4752.31 4823.15 87527 1025.12 945.06 879.46 -345.95 5205.39 39.08 350.45 4824.58 4895.42 924.35 1084.38 1003.11 937.90 355.78 5298.90 39.07 350.05 4897.18 4968.02 973.28 1143.32 1061.02 995.99 -365.76 5394.50 39.11 350.14 4971.38 5042.22 1023.42 1203.60 1120.39 10b5.37 -376.13 5488.17 39.14 350.58 5044.04 5114.88 1072.42 1262.70 1178.65 1113.64 -386.03 5583.50 39.71 350.82 5117.68 5188.52 1122.42 1323.25 1238.35 1173.39 -395.Si 5677.59 39.61 350.62 5190.12 5260.96 1172.00 1383.30 1297.63 1232.65 -405.50 5772.09 39.64 350.07 5262.90 5333.74 1221.98 1443.56 1357.26 1292.07 -415.60 5867.29 39.31 349.78 5336.39 5407.23 1272.41 1504.09 1417.25 1351.65 -426.19 0.08 5931320.80 696852.73 N 70.21657517 W 148.41201053 027 5931319.55 696853.61 N 70.21657169 W 148.41200374 0.25 5931318.62 696854.18 N 70.21656912 W 148.41199933 0.56 5931317.40 696854.61 N 70.21656576 W 148.41199615 4.62 5931318.85 696852.47 N 70.21656986 W 148.41201309 3.15 5931324.42 696845.26 N 70.21658559 W 148.41207006 3.35 5931331.79 696832.72 N 70.21660661 W 148.41216961 3.27 5931340.03 696814.60 N 70.21663042 W 148.41231394 1.55 5931348.45 696792.38 N 70.21665498 W 148.412491 2.77 5931350.04 696788.04 N 70.21665964 W 148.4125 12.00 5931351.67 696783.64 N 7021666442 W 148.41256110 0.00 5931354.23 696776.78 N 70.21667188 W 148:41261590 3.79 5931360.85 696761.80 N 70.21669105 W 148.41273529 4.19 5931375.54 696738.61 N 7021673281 W 148.41291923 4.10 5931397.05 696712.24 N 70.21679345 W 148.41312733 5.32 5931423.83 696688.07 N 70.21686831 W 148.41331655 5.38 5931457.08 696669.27 N 70.21696045 W 148.41346115 3.36 5931495.26 696654.28 N 70.21706579 W 148.41357402 2.80 5931537.20 696639.05 N 70.21718141 W 148.41368803 3.41 5931582.82 696621.90 N 70.21730725 W 148.41381672 1.49 5931630.49 696603.44 N 70.21743874 W 148.41395550 1.53 5931681.01 696583.52 N 7021757813 W 148.41410552 2.82 5931733.07 696563.64 N 70.21772175 W 148.41425490 2.51 5931788.73 696545.21 N 70.21787507 W 148.41439181 2.90 593184426 696531.13 N 70.21802773 W 148.41449370 2.84 5931901.61 696521.10 N 70.21818507 W 148.41456255 0.47 5931958.25 696513.04 N 70.21834036 W 148.4146 1.40 5932017.28 696504.25 N 7021850219 W 148.4146 0.94 5932077.14 696495.04 N 7021866635 W 148.41473584 0.69 5932136.51 696485.22 N 70.21882919 W 148.41480250 1.15 5932196.59 69647420 N 70.21899405 W 148.41487875 0.58 5932254.75 696462.86 N 7021915370 W 148.41495804 027 5932312.55 696451.36 N 7021931240 W 148.41503858 0.07 5932371.64 696439.45 N 70.21947463 W 148.41512224 0.30 5932429.63 696428.04 N 70.21963382 W 148.41520210 0.62 5932489.10 696416.70 N 70.21979704 W 148.41528104 0.17 5932548.09 696405.47 N 70.21995895 W 148.41535918 0.37 5932607.21 696393.82 N 7022012127 W 148.41544074 0.40 5932666.50 696381.69 N 7022028406 W 148.41552617 SurveyEditor Ver SP 2.1 Bid( doc40x_100 ) 12-12\12-12\12-12A\12-12A Generated 6/28/2007 2:00 PM Page 2 of 6 Comments Measured Inclination Azimuth SubSea ND ND Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude' Depth Section Departure ft de de it ft ft ft ft ft ft 100 ft ftUS ftUS byt~3.U~ :itf./l ~4y.41 b41U.tf1 b4t11.ti5 l:i'L'L.tf4 1bti4.:S/ 14//.U`J 141U.y5 -43/.UC U.ti/ b`J:i'L/'L5.4y t7yti:iby.'Lf7 IV /U.LN44bU4 W 14t5.41,b14U1 6057.66 38.48 348.37 5484.74 5555.58 1372.60 1623.38 1535.78 1468.85 -448.45 0.73 5932783.07 696356.38 N 70.22060423 W 148.41570576 6153.84 3820 348.21 5560.18 5631.02 1423.24 1683.04 1595.20 1527.27 -460.55 0.31 5932841.16 696342.76 N 70.22076383 W 148.41580347 6248.08 38.56 347.95 5634.06 5704.90 1473.01 1741.55 1653.51 1584.52 -472.64 0.42 5932898.07 696329.18 N 70.22092023 W 148.41590099 6343.42 38.88 346.61 5708.44 5779.28 1524.18 1801.19 1713.01 1642.69 -485.77 0.94 5932955.87 696314.54 N 7022107914 W 148.41600696 6437.39 38.65 346.38 5781.71 5852.55 1575.07 1860.03 1771.77 1699.90 -499.51 0.29 5933012.70 696299.31 N 7022123544 W 148.41611783 6531.63 37.97 347.47 5855.66 5926.50 1625.38 1918.45 1830.10 1756.80 -512.73 1.02 5933069.24 696284.61 N 70.22139089 W 148.41622451 6626.10 38.21 347.74 5930.01 6000.85 167521 1976.72 1888.25 1813.72 -525.24 0.31 5933125.81 696270.62 N 7022154639 W 148.41632545 672221 38.48 348.02 6005.39 6076.23 1726.04 2036.35 1947.73 1872.02 -537.76 0.33 5933183.75 696256.59 N 70.22170565 W 148.41642648 6816.82 38.68 348.90 6079.35 6150.19 1776.03 2095.35 2006.55 1929.83 -549.56 0.62 5933241.23 696243.29 N 7022186357 W 148.41652172 6912.32 39.08 350.05 6153.70 6224.54 1826.24 2155.29 2066.24 1988.76 -560.51 0.86 5933299.85 696230.81 N 7022202458 W 148.416610 6 7006.08 39.23 352.13 6226.40 6297.24 1874.89 2214.49 2125.02 2047.24 -569.68 1.41 5933358.07 696220.12 N 70.22218434 W 148.4166 7099.54 39.06 353.74 6298.89 6369.73 1922.28 2273.49 2183.39 2105.79 -576.93 1.10 5933416.41 696211.34 N 70.22234429 W 148.41674264 7193.28 39.27 354.40 6371.57 6442.41 1969.12 2332.69 2241.82 2164.67 -583.05 0.50 5933475.11 696203.69 N 70.22250516 W 148.41679201 7287.75 39.49 354.64 6444.59 6515.43 2016.25 2392.63 2300.94 2224.34 -588.77 028 5933534.60 696196.41 N 70.22266815 W 148.41683822 7381.91 38.98 355.15 6517.52 6588.36 2062.85 2452.18 2359.66 2283.66 -594.07 0.64 5933593.76 696189.57 N 70.22283021 W 148.41688103 7475.74 37.95 354.80 6590.99 6661.83 2108.45 2510.55 2417.24 2341.80 -599.18 1.12 5933651.74 696182.94 N 70.22298905 W 148.41692229 7570.13 36.96 355.02 6665.92 6736.76 2153.35 2567.95 2473.91 2398.97 -604.28 1.06 5933708.76 696176.36 N 70.22314524 W 148.41696342 7664.85 36.63 355.15 6741.77 6812.61 2197.62 2624.68 2529.92 2455.50 -609.14 0.36 5933765.14 696170.03 N 70.22329966 W 148.41700268 7757.97 35.89 355.83 6816.86 6887.70 2240.35 2679.76 2584.27 2510.40 -613.47 0.90 5933819.90 696164.26 N 70.22344966 W 148.41703768 7852.85 35.67 356.36 6893.83 6964.67 2283.02 2735.23 2638.95 2565.74 -617.25 0.40 5933875.13 696159.04 N 70.22360085 W 148.41706820 7946.70 35.09 357.40 6970.35 7041.19 2324.33 2789.57 2692.41 2620.00 -620.21 0.89 5933929.29 696154.67 N 70.22374908 W 148.41709212 8041.50 34.60 355.87 7048.15 7118.99 2365.66 2843.73 2745.77 2674.07 -623.39 1.06 5933983.25 696150.09 N 70.22389679 W 148.41711777 8135.58 36.27 354.21 7124.80 7195.64 2408.25 2898.27 2799.77 2728.40 -628.12 2.05 5934037.44 696143.94 N 7022404522 W 148.41715598 8229.35 38.17 352.91 7199.47 7270.31 2453.44 2954.99 2856.13 2784.76 -634.49 2.19 5934093.60 696136.10 N 70.22419918 W 148.41720745 8266.09 39.30 351.41 7228.13 7298.97 2472.08 2977.97 2879.03 2807.53 -637.63 4.00 5934116.28 696132.37 N 70.22426139 W 148.41723280 8325.59 40.19 351.09 7273.88 7344.72 250329 3016.02 2916.97 2845.13 -643.42 1.53 5934153.72 696125.60 N 70.22436411 W 148.41727952 8419.65 39.79 35029 7345.95 7416.79 2553.22 3076.46 2977.32 2904.78 -653.20 0.69 5934213.09 696114.27 N 70.22452707 W 148.41735845 8514.93 38.71 350.65 7419.73 7490.57 2603.13 3136.75 3037.51 296423 -663.18 1.16 5934272.26 696102.74 N 7022468948 W 148.4174~ 8608.62 37.80 350.59 7493.30 7564.14 2651.08 3194.76 3095.43 3021.46 -672.63 0.97 5934329.22 696091.80 N 70.22484584 W 148.4175 8703.79 37.92 351.14 7568.44 763928 2699.22 3253.17 3153.73 3079.13 -681.91 0.38 5934386.62 696081.03 N 70.22500338 W 148.41759021 8796.29 38.02 349.35 7641.36 7712.20 2746.47 3310.07 3210.58 3135.21 -691.55 1.20 5934442.43 696069.93 N 70.22515659 W 148.41766806 8890.70 37.62 345.66 7715.95 7786.79 2796.00 3367.95 3268.44 3191.71 -704.06 2.43 5934498.58 696055.94 N 70.22531094 W 148.41776905 8986.26 39.39 341.03 7790.74 7861.58 2849.00 3427.42 3327.74 3248.66 -721.15 3.54 5934555.06 696037.38 N 70.22546652 W 148.41790695 9080.76 43.63 338.67 7861.50 7932.34 2906.45 3490.03 3389.79 3307.42 -742.76 4.78 5934613.23 696014.24 N 70.22562703 W 148.41808142 917521 47.00 335.53 7927.91 7998.75 2969.25 3557.17 3455.86 3369.23 -768.93 4.28 5934674.34 695986.47 N 70.22579590 W 148.41829263 9270.04 49.37 330.85 7991.15 8061.99 3036.88 3627.82 3524.44 3432.25 -800.84 4.45 5934736.50 695952.93 N 70.22596805 W 148.41855013 9366.56 51.59 325.93 8052.59 8123.43 3109.66 3702.25 3595.07 3495.59 -839.88 4.55 5934798.80 695912.25 N 70.22614109 W 148.41886523 9459.99 53.40 322.09 8109.49 8180.33 3183.10 3776.36 3663.63 3555.52 -883.45 3.79 5934857.57 695867.14 N 70.22630480 W 148.41921680 9555.52 56.86 320.35 8164.10 8234.94 3261.18 3854.72 3734.89 3616.59 -932.55 3.92 5934917.34 695816.47 N 70.22647163 W 148.41961305 9650.67 56.38 320.53 8216.45 8287.29 3340.44 3934.18 3806.99 3677.85 -983.15 0.53 593497725 69576429 N 70.22663896 W 148.42002144 SurveyEditor Ver SP 2.1 Bld( doc40x_100 ) 12-12\12-12\12-12A\12-12A Generated 6/28/2007 2:00 PM Page 3 of 6 Comments Measured ~nclination Azimuth SubSea ND ND Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude' Depth Section Departure ft de de n n ft ft n n tt de 100 ft ftUS ftUS MW D+IFR:AK MWD+IFR+MS 9743.50 9840.48 9933.50 10028.64 10122.82 i 0217.39 10312.79 10346.03 10422.25 10453.43 10486.63 10512.72 10550.39 10582.78 10613.30 10639.40 10672.73 10701.38 10733.18 10765.83 55.31 54.36 54.07 56.83 57.85 56.98 57.44 58.00 63.02 69.93 77.06 84.06 91.30 98.29 98.81 98.62 94.39 92.96 91.37 93.10 319.73 319.91 320.49 319.97 319.96 32028 319.69 320.34 321.00 323.43 325.36 326.80 325.54 324.94 318.54 312.29 310.27 311.73 311.97 310.78 8268.56 8324.42 8378.81 8432.76 8483.59 8534.52 8586.18 8603.93 8641.44 8653.88 8663.31 8667.59 8669.11 8666.40 8661.$6 8657.90 8654.13 8652.29 8651.09 8649.82 8648.12 8646.04 8643.51 8641.24 8639.64 8339.40 8395.26 8449.65 8503.60 8554.43 8605.36 8657.02 8674.77 8712.28 8724.72 8734.15 8738.43 8739.95 8737.24 8732.70 8728.74 8724.97 8723.13 8721.93 8720.66 8718.96 8716.88 8714.35 8712.08 8710.48 3417.09 349623 3571.52 3649.69 3728.82 3808.33 3888.37 3916.42 3982.56 4010.97 4042.47 4067.82 4104.89 4136.76 4166.79 4192.57 4225.55 4254.01 4285.69 4318.19 4349.11 4379.87 4412.17 4442.43 4471.98 4010.99 4090.27 4165.73 4244.09 4323.37 4403.06 448326 4511.36 4577.68 4606.25 4638.06 4663.78 4701.40 4733.65 4763.84 4789.63 4822.74 4851.33 4883.11 4915.73 4946.99 4978.37 5011.68 5043.34 5074.32 3876.80 3948.94 4018.06 4090.08 4163.05 4236.70 4310.97 4337.05 4398.98 4425.96 4456.39 4481.22 4517.56 4548.61 4577.10 4600.41 462928 4654.19 4682.15 4710.78 4737.37 4763.20 4789.75 4814.03 4837.77 10797.13 93.13 305.54 10828.58 94.43 304.48 10861.99 94.26 300.01 10893.73 93.95 298.46 10924.75 91.96 299.45 10957.12 10990.25 11020.94 11053.95 11086.44 11117.48 11147.70 11179.91 11211.53 11244.15 90.39 91.04 90.73 90.11 89.94 89.77 90.69 91.21 90.01 88.91 299.10 8638.97 8709.81 4502.91 5106.68 4862.78 298. 92 8638.56 8709.40 4534.53 5139.81 4888.37 296. 20 8638.09 8708.93 4563.58 5170.49 4911.66 293. 88 8637.85 8708.69 4594.32 5203.50 4935.84 293. 97 8637.83 8708.67 4624.35 5235.99 4959.31 3736.81 -1032.39 3797.38 -1083.54 3855.35 -1131.84 3915.57 -1181.97 3976.28 -1232.97 4037.42 -1284.07 4098.85 -1335.63 4120.38 -1353.69 4171.69 -1395.72 419427 -1413.21 4220.14 -1431.72 4241.49 -1446.07 4272.73 -1467.01 4299.23 -1485.40 4322.92 -1504.08 4341.28 -1522.18 4363.12 -1547.06 4381.88 -1568.64 4403.08 -1592.31 4424.64 -1616.79 4443.95 -1641.35 4461.95 -1667.06 4479.72 -1695.23 4495.18 -1722.85 4510.18 -1749.96 4526.00 -1778.18 4542.07 -1807.16 4556.27 -1834.36 4570.24 -1864.26 4583.41 -1893.96 1.36 5935034.90 695713.53 N 70.22680001 W 148.42041884 0.99 5935094.11 695660.82 N 7022696547 W 148.42083166 0.59 5935150.80 695611.03 N 70.22712383 W 148.42122150 2.94 5935209.69 695559.35 N 70.22728833 W 148.42162607 1.08 5935269.05 695506.79 N 70.22745415 W 148.42203771 0.96 5935328.84 0.71 5935388.89 2.36 5935409.94 6.63 5935460.13 23.28 5935482.26 22.19 5935507.63 27.38 5935528.59 19.51 5935559.28 21.66 5935585.29 20.81 5935608.48 23.68 5935626.36 14.05 5935647.55 7.13 5935665.73 5.06 5935686.31 6.43 5935707.23 16.72 5935725.88 5.33 5935743.21 13.35 5935760.24 4.97 5935774.97 7.16 5935789.25 4.97 5935804.34 2.04 5935819.64 8.92 5935833.12 7.27 5935846.31 0.59 5935858.70 695454.12 695400.97 695382.36 695339.01 695320.94 695301.76 695286.86 695265.11 695246.04 695226.75 695208.18 695182.74 695160.68 695136.47 695111.43 695086.37 695060.21 695031.59 695003.57 694976.09 694947.46 694918.08 694890.52 694860.26 694830.23 694801.25 694772.63 694742.01 694711.86 694680.51 694649.42 69461923 694586.66 694554.80 694528.46 N 70.22762118 W 148.42245008 N 70.22778896 W 148.42286630 N 70.22784778 W 148.42301205 N 70.22798792 W 148.42335127 N 70.22804962 W 148.42349246 N 70.22812029 W 148.4236~ N 70.22817859 W 148.4237 N 7022826394 W 148.42392675 N 7022833633 W 148.42407520 N 70.22840103 W 148.42422597 N 70.22845119 W 148.42437207 N 70.22851084 W 148.42457289 N 70.22856207 W 148.42474704 N 7022861997 W 148.42493809 N 7022867887 W 148.42513568 N 70.22873159 W 148.42533397 N 70.22878076 W 148.42554141 N 70.22882929 W 148.42576877 N 70.22887151 W 148.42599174 N 70.22891247 W 148.42621050 N 7022895568 W 148.42643834 N 70.22899955 W 148.42667217 N 70.22903832 W 148.42689172 N 70.22907647 W 148.4271 ~ N 70.22911244 W 148.4273 N 70.22914479 W 148.42760430 N 7022917326 W 148.42783321 N 7022920271 W 148.42807813 N 70.22923083 W 148.42831938 N 70.22925761 W 148.42857044 N 7022928178 W 148.42881963 N 70.22930151 W 148.42906184 N 70.22931918 W 148.42932348 N 70.22933545 W 148.42957942 N 70.22934852 W 148.42979112 290.91 8637.91 8708.75 4652.72 5267.03 4981.26 4595.26 -1922.65 9.87 5935869.80 289.47 8637.79 8708.63 4679.84 5297.25 5001.88 4605.69 -1951.01 5.65 5935879.48 289.67 8637.25 8708.09 4708.59 5329.46 5023.71 4616.48 -1981.35 1.73 5935889.48 288.36 8636.92 8707.76 4736.67 5361.07 5045.01 4626.78 -2011.24 5.62 5935898.99 286.65 8637.22 8708.06 4765.23 5393.69 5066.47 4636.59 -2042.35 6.23 5935907.99 11276.28 88. 50 285.36 8637.95 8708.79 4792.95 5425.81 5087.08 4645.44 -2073. 23 4.21 5935916.04 11307.16 89. 25 281.73 8638.56 8709.40 4818.89 5456.69 5105.98 4652.67 -2103. 24 12.00 5935922.48 11340.22 89. 97 280.86 8638.78 8709.62 4845.94 5489.75 5125.30 4659.15 -2135. 66 3.42 5935928.11 11372.50 92. 68 280.45 8638.04 8708.88 4872.14 5522.01 5144.00 4665.12 -2167. 37 8.49 593593325 11399.20 93 20 280.25 8636,67 8707.51 4893.71 5548.68 5159.45 4669.91 -2193. 60 2.09 5935937.35 SurveyEditor Ver SP 2.1 Bld( doc40x_100 ) 12-12\12-12\12-12A\12-12A Generated 6/28/2007 2:00 PM Page 4 of 6 Comments Measured ~nclination Azimuth SubSea ND ND Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude' Depth Section Departure ft de de it ft n n n n ft de 100 ft ftUS ftUS 114;i5."Ltf yl.ll "LifU.'L/ tfliS5.:i1 i3Nb.15 4y"L"L.C:S 55tS4./:i b1CU.4:5 4ti/b.:f3 -L"GLy.U/ b./y by;i5y4L.C4 by44y'L.tf3 IV /U.LLy;ibbU:f W 14tf.4JUU//4J 11467.23 91.00 278.66 8634.72 8705.56 4948.38 5616.68 5198.79 4681.58 -2260.58 5.05 5935947.27 694461.20 N 70.22938036 W 148.43033173 11498.34 91.72 276.34 8633.98 8704.82 4972.59 5647.78 5215.92 4685.64 -2291.42 7.81 5935950.53 694430.27 N 70.22939142 W 148.43058057 11530.22 91.48 276.10 8633.09 8703.93 4996.95 5679.64 5233.01 4689.09 -2323.10 1.06 5935953.15 694398.51 N 70.22940083 W 148.43083624 11562.90 91.76 275.19 8632.17 8703.01 5021.70 5712.31 5250.39 4692.31 -2355.60 2.91 5935955.52 694365.93 N 70.22940958 W 148.43109860 11594.06 91.38 273.24 8631.32 8702.16 5044.79 5743.46 5266.44 4694.60 -2386.67 6.37 5935956.99 694334.82 N 7022941581 W 148.43134929 11626.71 91.17 273.35 8630.59 8701.43 5068.64 5776.10 5282.96 4696.47 -2419.25 0.73 5935958.02 694302.20 N 70.22942091 W 148.43161229 11658.60 9128 272.05 8629.91 8700.75 5091.70 5807.98 5298.95 4697.97 -2451.10 4.09 5935958.69 694270.33 N 70.22942498 W 148.43186931 11689.94 91.28 269.18 8629.21 8700.05 5113.56 5839.32 5313.81 4698.31 -2482.43 9.16 5935958.21 694239.00 N 70.22942587 W 148.43212213 11722.18 90.90 266.99 8628.59 8699.43 5135.01 5871.55 5327.98 4697.23 -2514.64 6.89 5935956.29 694206.83 N 70.22942290 W 148.43238210 11754.97 91.00 267.19 8628.05 8698.89 5156.39 5904.34 5342.05 4695.57 -2547.39 0.68 5935953.78 694174.14 N 70.22941832 W 148.43264635 11786.28 91.17 267.34 8627.46 8698.30 5176.89 5935.64 5355.72 4694.07 -2578.65 0.72 5935951.47 694142.92 N 70.22941421 W 148.4328~ 11818.08 91.17 267.14 8626.81 8697.65 5197.69 5967.43 5369.75 4692.54 -2610.41 0.63 5935949.11 694111.22 N 70.22941000 W 148.4331 11848.82 91.24 267.44 8626.16 8697.00 5217.82 5998.17 5383.47 4691.09 -2641.11 1.00 5935946.86 694080.57 N 7022940600 W 148.43340271 1188028 91.38 268.24 8625.44 8696.28 5238.65 6029.62 5397.93 4689.90 -2672.54 2.58 5935944.85 694049.19 N 70.22940273 W 148.43365635 11912.35 91.21 268.11 8624.72 8695.56 5260.02 6061.68 5412.98 4688.88 -2704.58 0.67 5935943.00 694017.18 N 70.22939991 W 148.43391497 11944.35 91.28 267.65 8624.02 8694.86 5281.23 6093.67 5428.01 4687.70 -2736.55 1.45 5935940.98 693985.25 N 70.22939665 W 148.43417298 11975.74 91.31 268.36 8623.31 8694.15 5302.08 6125.05 5442.95 4686.61 -2767.92 2.26 5935939.07 693953.93 N 70.22939363 W 148.43442608 12007.72 91.17 268.51 8622.62 8693.46 5323.50 6157.03 5458.52 4685.73 -2799.88 0.64 5935937.36 693922.01 N 70.22939122 W 148.43468401 12040.03 91.17 268.21 8621.96 8692.80 5345.11 6189.33 5474.36 4684.81 -2832.17 0.93 5935935.60 693889.75 N 70.22938866 W 148.43494460 12071.24 9121 267.95 8621.31 8692.15 5365.87 6220.53 5489.67 4683.76 -2863.35 0.84 5935933.74 693858.61 N 70.22938577 W 148.43519627 12103.46 91.38 267.85 8620.58 8691.42 5387.23 6252.75 5505.52 4682.58 -2895.54 0.61 5935931.72 693826.46 N 7022938251 W 148.43545605 12135.15 91.00 268.65 8619.93 8690.77 5408.38 6284.43 5521.42 4681.62 -2927.2t 2.79 5935929.93 693794.83 N 70.22937984 W 148.43571162 12166.92 89.15 271.85 8619.88 8690.72 5430.39 6316.20 5538.44 4681.76 -2958.98 11.63 5935929.24 693763.08 N 70.22938018 W 148.43596796 12198.84 88.77 272.34 8620.46 8691.30 5453.24 6348.11 5556.53 4682.92 -2990.87 1.94 5935929.57 693731.16 N 70.22938333 W 148.43622536 12231.81 89.46 272.69 8620.97 8691.81 5477.02 6381.08 5575.54 4684.37 -3023. 80 12263.35 89.91 272.73 8621.15 8691.99 5499.83 6412.62 5593.94 4685.86 -3055. 31 12295.06 89.84 273.06 8621.22 8692.06 5522.84 6444.33 5612.64 4687.46 -3086. 98 12327.49 87.77 272.16 8621.89 8692.73 5546.26 6476.75 5631.75 4688.94 -3119. 36 12359.01 88.02 272.36 8623.05 8693.89 5568.88 6508.25 5650.27 4690.18 -3150. 84 12391.86 87.85 271.84 8624.23 8695.07 5592.38 6541.08 5669.63 4691.38 -3183. 64 12423.02 87.61 271.67 8625.47 8696.31 5614.55 657221 5687.95 4692.34 -3214. 77 12454.03 87.68 272.10 8626.74 8697.58 5636.65 6603.19 5706.34 4693.36 -3245. 73 12486.54 88.81 271.40 8627.74 8698.58 5659.78 6635.69 5725.69 4694.35 -3278. 21 12518.97 89.87 272.14 8628.11 8698.95 5682.87 6668.12 5745.13 4695.35 -3310. 62 12549.96 89.87 273.07 8628.18 8699.02 5705.25 6699.11 5764.17 4696.76 -3341. 58 12580.48 89.60 272.94 8628.32 8699.16 5727.44 6729.63 5783.19 4698.36 -3372. 06 Last MWD+IFR+MS 12593.68 89.53 273.09 8628.42 8699.26 5737.03 6742.83 5791.45 4699.05 -3385.24 TD ( Projected ) 12650.00 89.53 273.09 8628.88 8699,72 5778.04 6799.14 5826.95 4702.09 -3441.48 Survey Type: Definitive Survey NOTES: CB GYRO MS -( Camera-based gyro multishot -- Traditional optically referenced gyro surveys run on wireline 2.35 5935930.16 693698.21 N 70.22938725 W 148.43649115 1.43 5935930.83 693666.68 N 70.22939129 W 148.43674540 1.06 5935931.60 693634.98 N 70.22939563 W 148.43700099 6.96 5935932.23 693602.56 N 70.22939963 W 148.43726237 1.02 5935932.66 693571.07 N 7022940298 W 148.4375~ 1.66 5935933.00 693538.25 N 70.22940623 W 148.43778114 0.94 5935933.14 693507.11 N 70.22940880 W 148.43803230 1.40 5935933.36 693476.13 N 70.22941155 W 148.43828222 4.09 5935933.50 693443.64 N 70.22941422 W 148.43854433 3.99 5935933.66 693411.21 N 70.22941692 W 148.43880591 3.00 5935934.26 693380.23 N 70.22942073 W 148.43905575 0.98 5935935.06 693349.72 N 7022942507 W 148.43930172 1.25 5935935.41 693336.53 N 70.22942695 W 148.43940810 0.00 5935936.98 693280.24 N 70.22943517 W 148.43986196 SurveyEditor Ver SP 2.1 Bld( doc40x_100 ) 12-12\12-12\12-12A\12-12A Generated 6/28/2007 2:00 PM Page 5 of 6 Comments Measured Inclination Azimuth Sub-Sea ND ND Vertical Alon9 Hole Closure NS EW DLS Northing Easting Latitude Longitude~ Depth Section Departure ft de de ft n n it ft n n de 00 ft ftUS ftUS - including "level rotor" gyros and Sperry-Sun SU3. Replaces ex-BP "PGMS" model.) 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:AK -( MWD + IFR [Alaska] -- In-field referenced MWD in Alaska. Model takes account of increased violence of magnetic field disturbances in Alaska. Assumes a BHA sag correction is aqplied to enhance lnclination accuracy. MWD + IFR + MS -( In-field referenced MWD with mult-station analysis and correction applied in post-processing. Assumes a BHA sag correction is applied to enhance inclination accuracy. ) Leaal Description: Northing (Y) [ftUS] Easting (X) [ftUS] Surtace : 1015 FSL 751 FEL S18 T10N R15E UM 5931326.50 696842.95 BHL : 436 FSL 4175 FEL S7 T10N R15E UM 5935936.98 693280.24 ~ • SurveyEditor Ver SP 2.1 Bld( doc40x_100 ) 12-12\12-12\12-12A\12-12A Generated 6/28/2007 2:00 PM Page 6 of 6 TREE = Cameron WELLHEAD~RAY/McEvoy ACTUATOR = Baker KB. ELEV = 70.84 BF. ELEV = 21.78 KOP = 3318' Max Angle = 98.81 Datum MD = Datum N D= 88~0' SS ~ ~~L~ ~~F~ 13-3/8" CSG, 72#, L-80, ID = 12.347" 2664' I TOC on 7" Tieback I I 2765' I 12-12A Minimum ID = 3.725" @ 10238' XN NIPPLE As-Drilled • 3213~ 9-5/8" X 7" Baker Tie Back Stem (6.184" ID) 3213' 9'S/8" X 7" Baker ZXP Packer / Hanger W/ 11.61' PBR ID = 7.5" ID 10173~ 4-1/2" X Nipple (3.813" ID) 1019~' ~" X 4-1/2" Baker S3 Produciion Packer 10217' 4-112" X Nipple (3.813" ID) ~: 10238~ 4-1l2" XN Nipple (3.725" ID) . 10251' 4-1/2" WL~ 10414' ~4-1/2" 12.6#, L-80, Slotted Liner ~ PERFORATION SUMMARY REF LOG: BHCS ON 07/20/81 ANGLE AT TOP PERF: 38 @ 9906' Note: Refer to Production DB for historical perf data SIZE SPF INTERVAL OpnlSqz DATE 2-7/8" 6 9906 - 9926 O 06/15/98 2- 8" 6 10031 - 10035 O 06/15 2-7/8' 6 10038 - 10041 O 5l98 3-1l8" 10041 - 10059 O 07l14i86 3-318" 4 041 - 10059 12/03/90 3-1/8" 4 100 10077 O 07/14/86 3-3/8" 4 10064 - 1 O 12/03/90 3-3/8" 4 10084 0100 O 12/03/90 3-1 /8" 4 1 4- 10162 02113/84 8 10178 - 10218 S 11l15/90 10230 - 10250 S 15/90 3-3/ " 4 10358 - 10360 S 11/1 PaT~ 10837' 7" LNR, 29#, L-80, .0371 bpf, ID = 6.184" ~087U~ ~ ~ ~ \ ~ ~ ~ ~~~ ~ ~ 11716' 4-1/2" Tam Sw ell Packer ~C -9,365 ~~ ~ TOP OF 7" LNR 9619' 9601' TOP C7F 4-112" BKR KF3 BTM F'KR {fl811A!04} 5tuck~d Udl2-7,'$" XN NIP, iD= 2.25" PLUG SET (03107/05) ( 9651~ 4-1/2" TUBING TAII 9-5/8" CSG, 47#, L-80, ID = 8.681" 9933~ 10030' FISH - PATCH RUBBER & ELEMENTS 1d821~ FISH - (7) FINGERS F/KIN ~ CALIPER 1/8"X5/16"X1" ~ 10826~ FISH - GLV DATE REV BY COMMENTS DATE REV BY COMMENTS 07/26/81 ORIGINAL COMPLETION 08/14/04 LDK/TLP SET PACKER 10/26/01 RN/TP CORRECTIONS 03/06/05 KSB/TLH PKR XN NIPPLE CORRECT 02/06l03 ATD/TP DELETE WANER SAFEfY NOT 04/01/05 MGS/TLH XN PLUG SET (03/07/05) 10l26/03 CAO/TLP PULL PATCH @ 7926' 06l21/07 CC As Driiled 11(04/03 SVC/TLP CORRECTSQZ'd PERFS 11/90 01/30/04 GJB/TLP G~V GO PRUDHOE BAY UNff WELL: 12-12 PERMfT No: ~1810830 API No: 50-029-20610-00 SEC 18, T10N, R15E, 3639.14' FEL & 1237.52' FNL BP Exploration (Alaska) 2217~ 4-1/2" X Nipple (3.813" ID) SCHLUMBERGER Survey report Client ...................: BP Exploration (Alaska) Inc. Field ....................: Prudhoe Bay Well .....................: 12-12A API number ...............: 50-029-20610-01 Engineer .................: I.Hernandez/J.Hudon Rig :.....................: Nabors 7ES 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's Depth GL above permanent.......: 29.96 ft KB above permanent........ N/A Top Drive DF above permanent.......: 70.84 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: 316.37 degrees ~ O J 1 4 .~ [(c)2007 IDEAL ID12_OC_09] ~ 17-Jun-2007 21:56:36 Page 1 of 8 Spud date ................: 24-May-07 Last survey date.........: 17-Jun-07 Total accepted surveys...: 184 I~ID of first survey.......: 0.00 ft NID of last survey........: 12650.00 ft ----- Geomagnetic data ---------------------- Magnetic model...........: BGGM version 2006 Magnetic date ............: 29-May-2007 Magnetic field strength..: 57668.01 G~ Magnetic dec (+E/W-)...... 24.03 degrees Magnetic dip .............: 80.92 degrees ----- MWD survey Reference Reference G ............... Reference H ............... Reference Dip ............: Tolerance of G...........: Tolerance of H............ Tolerance of Dip.........: Criteria --------- 1002.67 mGal 57668.00 GAMA 80.92 degrees (+/-) 2.50 mGal (+/-)300.00 GAMA (+/-) 0.45 degrees ----- Corrections --------------- Magnetic dec (+E/W-).....: 24.03 degrees Grid convergence (+E/W-).: 0.00 degrees Total az corr (+E/W-)....: 24.03 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 17 -Jun-2007 21:56:36 Page 2 of 8 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 - (fty (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 BP CB GYRO MS 2 99.84 0.00 0.00 99.84 99.84 0.00 0.00 0.00 0.00 0.00 0.00 BP CB GYRO MS 3 199.84 0.00 0.00 100.00 199.84 0.00 0.00 0.00 0.00 0.00 0.00 BP CB GYRO MS 4 299.84 0.00 0.00 100.00 299.84 0.00 0.00 0.00 0.00 0.00 0.00 BP CB GYRO MS 5 399.84 0.00 0.00 100.00 399.84 0.00 0.00 0.00 0.00 0.00 0.00 BP CB GYRO MS 6 499.84 0.00 0.00 100.00 499.84 0.00 0.00 0.00 0.00 0.00 0.00 BP CB GYRO MS 7 8 599.84 699.84 0.00 0.00 0.00 0.00 100.00 100.00 599.84 699.84 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 BP BP _CB _CB GYRO GYRO MS MS • 9 799.84 0.00 0.00 100.00 799.84 0.00 0.00 0.00 0.00 0.00 0.00 BP CB GYRO MS 10 899.84 0.00 0.00 100.00 899.84 0.00 0.00 0.00 0.00 0.00 0.00 BP CB GYRO MS 11 999.84 0.50 95.52 100.00 999.84 -0.33 -0.04 0.43 0.44 95.52 0.50 BP CB GYRO MS 12 1099.84 0.00 180.00 100.00 1099.84 -0.66 -0.08 0.87 0.87 95.52 0.50 BP CB GYRO MS 13 1199.84 0.50 156.47 100.00 1199.84 -1.07 -0.48 1.04 1.15 114.90 0.50 BP CB GYRO MS 14 1299.84 0.00 0.00 100.00 1299.83 -1.48 -0.88 1.22 1.50 126.00 0.50 BP CB GYRO MS 15 1399.84 0.00 0.00 100.00 1399.83 -1.48 -0.88 1.22 1.50 126.00 0.00 BP CB GYRO MS 16 1499.84 0.00 0.00 100.00 1499.83 -1.48 -0.88 1.22 1.50 126.00 0.00 BP CB GYRO MS 17 1599.84 1.00 122.92 100.00 1599.83 -2.33 -1.36 1.95 2.38 124.87 1.00 BP CB GYRO MS 18 1699.84 0.50 138.28 100.00 1699.82 -3.61 -2.16 2.97 3.67 125.98 0.53 BP CB GYRO MS 19 1799.84 1.00 139.65 100.00 1799.81 -4.92 -3.15 3.83 4.96 129.44 0.50 BP CB GYRO MS 20 1899.84 1.00 99.02 100.00 1899.80 -6.49 -3.95 5.25 6.57 126.94 0.69 BP CB GYRO MS 21 1999.84 0.00 0.00 100.00 1999.79 -7.18 -4.09 6.12 7.36 123.75 1.00 BP CB GYRO MS 22 2099.84 1.00 42.92 100.00 2099.79 -7.13 -3.45 6.71 7.54 117.20 1.00 BP _CB GYRO MS ~ 23 2199.84 0.00 0.00 100.00 2199.78 -7.07 -2.81 7.30 7.83 111.04 1.00 BP CB GYRO MS 24 2299.84 0.75 137.63 100.00 2299.78 -7.73 -3.29 7.75 8.42 113.03 0.75 BP CB GYRO MS 25 2399.84 1.00 148.00 100.00 2399.77 -9.24 -4.52 8.65 9.76 117.57 0.29 BP CB GYRO MS 26 2499.84 1.00 143.37 100.00 2499.75 -10.96 -5.96 9.63 11.33 121.73 0.08 BP CB GYRO MS 27 2599.84 0.75 150.63 100.00 2599.74 -12.46 -7.23 10.47 12.73 124.61 0.27 BP CB GYRO MS 28 2699.84 0.50 148.78 100.00 2699.74 -13.52 -8.17 11.02 13.72 126.55 0.25 BP CB GYRO MS 29 2799.84 1.00 168.95 100.00 2799.73 -14.68 -9.40 11.41 14.79 129.47 0.56 BP CB GYRO MS 30 2899.84 3.75 316.12 100.00 2899.67 -12.14 -7.90 9.31 12.21 130.30 4.62 BP CB GYRO MS [(c)2007 IDEAL ID12_OC_09] SCHLUMBERGER Survey Report 17-Jun-2007 21:56:36 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/S- +E/W- displ Azim (deg/ tool Corr - --- (ft) -------- (deg) ------ (deg) ------- (ft) ------ (ft) ------- (ft) - -------- (ft) ------- (ft) --------- (ft) -------- (deg) ------- 100f) ----- - type (deg) ---- ------ 31 2999.84 6.75 305.33 100.00 2999.24 -3.10 -2.14 2.25 3.11 133.58 3.15 BP _CB GYRO MS 32 3099.84 10.00 299.65 100.00 3098.16 10.98 5.55 -10.09 11.52 298.82 3.35 BP CB GYRO MS 33 3199.84 13.00 293.12 100.00 3196.14 29.64 14.27 -27.99 31.41 297.01 3.27 BP _CB GYRO MS 34 3299.84 14.50 291.43 100.00 3293.28 51.33 23.26 -49.99 55.13 294.95 1.55 BP CB GYRO MS 35 3318.00 14.99 291.89 18.16 3310.84 55.52 24.96 -54.28 59.75 294.70 2.77 BP _CB GYRO MS 36 3335.00 17.03 291.89 17.00 3327.18 59.79 26.71 -58.63 64.43 294.49 12.00 BP Blind 37 38 3360.00 3417.28 17.03 16.27 291.89 299.00 25.00 57.28 3351.08 3405.97 66.45 81.75 29.44 36.46 -65.43 -80.23 71.75 88.13 294.23 294.44 0.00 3.79 BP BP _Blind _Inc+Trend • 39 3508.30 18.95 308.00 91.02 3492.73 108.55 51.75 -103.03 115.30 296.67 4.19 BP Inc+Trend 40 3604.62 22.48 313.00 96.32 3582.81 142.42 73.94 -128.84 148.55 299.85 4.10 BP Inc+Trend 41 3698.03 23.22 325.67 93.41 3668.95 178.44 101.35 -152.30 182.94 303.64 5.32 BP MWD+IFR+MS 42 3793.18 24.38 338.06 95.15 3756.06 215.22 135.07 -170.22 217.30 308.43 5.38 BP MWD+IFR+MS 43 3887.70 27.09 341.86 94.52 3841.20 252.79 173.63 -184.22 253.15 313.31 3.36 BP MWD+IFR+MS 44 3981.54 29.70 341.23 93.84 3923.74 293.17 215.95 -198.35 293.22 317.43 2.80 BP MWD+IFR+MS 45 4075.41 32.88 340.59 93.87 4003.95 337.52 262.02 -214.31 338.50 320.72 3.41 BP MWD+IFR+MS 46 4167.89 34.23 340.08 92.48 4081.02 384.23 310.15 -231.51 387.03 323.26 1.49 BP MWD+IFR+MS 47 4262.68 35.68 339.87 94.79 4158.71 434.00 361.17 -250.11 439.32 325.30 1.53 BP MWD+IFR+MS 48 4355.48 38.16 341.28 92.80 4232.89 484.82 413.74 -268.63 493.30 327.01 2.82 BP MWD+IFR+MS 49 4450.98 37.63 345.09 95.50 4308.27 537.16 469.87 -285.60 549.86 328.71 2.51 BP MWD+IFR+MS 50 4544.30 38.16 349.41 93.32 4381.92 586.32 525.74 -298.23 604.44 330.44 2.90 BP MWD+IFR+MS 51 4638.93 37.83 353.75 94.63 4456.51 633.89 583.34 -306.77 659.08 332.26 2.84 BP MWD+IFR+MS 52 4732.30 37.76 353.05 93.37 4530.29 679.57 640.18 -313.34 712.75 333.92 0.47 BP ~MWD+IFR+MS • 53 4828.32 39.10 353.00 96.02 4605.51 727.45 699.42 -320.59 769.39 335.37 1.40 BP MInID+IFR+MS 54 4923.52 39.93 352.49 95.20 4678.95 776.22 759.50 -328.24 827.40 336.63 0.94 BP MWD+IFR+MS 55 5016.87 40.35 351.73 93.35 4750.31 825.07 819.11 -336.50 885.54 337.67 0.69 BP MWD+IFR+MS 56 5111.93 39.62 350.46 95.06 4823.15 875.27 879.46 -345.95 945.06 338.53 1.15 BP MWD+IFR+MS 57 5205.39 39.08 350.45 93.46 4895.42 924.35 937.90 -355.78 1003.11 339.23 0.58 BP MWD+IFR+MS 58 5298.90 39.07 350.05 93.51 4968.02 973.28 995.99 -365.76 1061.02 339.84 0.27 BP MWD+IFR+MS 59 5394.50 39.11 350.14 95.60 5042.22 1023.42 1055.37 -376.13 1120.39 340.38 0.07 BP MWD+IFR+MS 60 5488.17 39.14 350.58 93.67 5114.88 1072.42 1113.64 -386.03 1178.65 340.88 0.30 BP MWD+IFR+MS [(C)2007 IDEAL ID12_OC_09] SCHLUMBERGER Survey Report 17-Jun-2007 21:56:36 Page 4 of 8 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 5583.50 39.71 350.82 95.33 5188.52 1122.42 1173.39 -395.81 1238.35 341.36 0.62 BP MWD+IFR+MS 62 5677.59 39.61 350.62 94.09 5260.96 1172.00 1232.65 -405.50 1297.63 341.79 0.17 BP MWD+IFR+MS 63 5772.09 39.64 350.07 94.50 5333.74 1221.98 1292.07 -415.60 1357.26 342.17 0.37 BP MWD+IFR+MS 64 5867.29 39.31 349.78 95.20 5407.23 1272.41 1351.65 -426.19 1417.25 342.50 0.40 BP MWD+IFR+MS 65 5963.06 38.71 349.41 95.77 5481.65 1322.84 1410.95 -437.08 1477.09 342.79 0.67 BP MWD+IFR+MS 66 6057.66 38.48 348.37 94.60 5555.58 1372.60 1468.85 -448.45 1535.78 343.02 0.73 BP MWD+IFR+MS 67 6153.84 38.20 348.21 96.18 5631.02 1423.24 1527.27 -460.55 1595.20 343.22 0.31 BP _MWD+IFR+MS 68 6248.08 38.56 347.95 94.24 5704.90 1473.01 1584.52 -472.64 1653.51 343.39 0.42 BP • _MWD+IFR+MS 69 6343.42 38.88 346.61 95.34 5779.28 1524.18 1642.69 -485.77 1713.01 343.53 0.94 BP MWD+IFR+MS 70 6437.39 38.65 346.38 93.97 5852.55 1575.07 1699.90 -499.51 1771.77 343.62 0.29 BP M[n1D+IFR+MS 71 6531.63 37.97 347.47 94.24 5926.50 1625.38 1756.80 -512.73 1830.10 343.73 1.02 BP MWD+IFR+MS 72 6626.10 38.21 347.74 94.47 6000.85 1675.21 1813.72 -525.24 1888.25 343.85 0.31 BP MWD+IFR+MS 73 6722.21 38.48 348.02 96.11 6076.23 1726.04 1872.02 -537.76 1947.73 343.97 0.33 BP MWD+IFR+MS 74 6816.82 38.68 348.90 94.61 6150.19 1776.03 1929.83 -549.56 2006.55 344.10 0.62 BP MWD+IFR+MS 75 6912.32 39.08 350.05 95.50 6224.54 1826.24 1988.76 -560.51 2066.24 344.26 0.86 BP MWD+IFR+MS 76 7006.08 39.23 352.13 93.76 6297.24 1874.89 2047.24 -569.68 2125.02 344.45 1.41 BP MWD+IFR+MS 77 7099.54 39.06 353.74 93.46 6369.73 1922.28 2105.79 -576.93 2183.39 344.68 1.10 BP MWD+IFR+MS 78 7193.28 39.27 354.40 93.74 6442.41 1969.12 2164.67 -583.05 2241.82 344.93 0.50 BP MWD+IFR+MS 79 7287.75 39.49 354.64 94.47 6515.43 2016.25 2224.34 -588.77 2300.94 345.17 0.28 BP Min7D+IFR+MS 80 7381.91 38.98 355.15 94.16 6588.36 2062.84 2283.66 -594.07 2359.66 345.42 0.64 BP MWD+IFR+MS 81 7475.74 37.95 354.80 93.83 6661.83 2108.45 2341.80 -599.18 2417.24 345.65 1.12 BP MWD+IFR+MS 82 7570.13 36.96 355.02 94.39 6736.76 2153.35 2398.97 -604.28 2473.91 345.86 1.06 BP _MWD+IFR+MS • 83 7664.85 36.63 355.15 94.72 6812.61 2197.62 2455.50 -609.14 2529.92 346.07 0.36 BP MWD+IFR+MS 84 7757.97 35.89 355.83 93.12 6887.69 2240.35 2510.40 -613.47 2584.27 346.27 0.90 BP MWD+IFR+MS 85 7852.85 35.67 356.36 94.88 6964.67 2283.01 2565.74 -617.25 2638.95 346.47 0.40 BP MWD+IFR+MS 86 7946.70 35.09 357.40 93.85 7041.19 2324.33 2620.00 -620.21 2692.41 346.68 0.89 BP _MWD+IFR+MS 87 8041.50 34.60 355.87 94.80 7118.99 2365.65 2674.07 -623.39 2745.77 346.88 1.06 BP MWD+IFR+MS 88 8135.58 36.27 354.21 94.08 7195.64 2408.25 2728.40 -628.12 2799.77 347.04 2.05 BP _MWD+IFR+MS 89 8229.35 38.17 352.91 93.77 7270.31 2453.43 2784.76 -634.49 2856.13 347.16 2.19 BP MWD+IFR+MS 90 8266.09 39.30 351.41 36.74 7298.97 2472.08 2807.53 -637.63 2879.03 347.20 4.00 BP _MWD+IFR+MS [(c)2007 IDEAL ID12_OC_09] SCHLUMBERGER Survey Report 17 -Jun-2007 21:56:36 Page 5 of 8 --- 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 -------- 8325.59 ------ 40.19 ------- 351.09 ------ 59.50 -------- 7344.72 -------- 2503.29 ------- 2845.13 --------- -643.42 ------- 2916.97 -------- 347.26 ----- 1.53 - BP ---- ------ MWD+IFR+MS 92 8419.65 39.79 350.29 94.06 7416.78 2553.21 2904.78 -653.20 2977.32 347.33 0.69 BP MWD+IFR+MS 93 8514.93 38.71 350.65 95.28 7490.57 2603.13 2964.23 -663.18 3037.51 347.39 1.16 BP _MWD+IFR+MS 94 8608.62 37.80 350.59 93.69 7564.14 2651.08 3021.46 -672.63 3095.43 347.45 0.97 BP MWD+IFR+MS 95 8703.79 37.92 351.14 95.17 7639.28 2699.22 3079.13 -681.91 3153.73 347.51 0.38 BP MWD+IFR+MS 96 8796.29 38.02 349.35 92.50 7712.20 2746.47 3135.21 -691.55 3210.58 347.56 1.20 BP MWD+IFR+MS 97 8890.70 37.62 345.66 94.41 7786.79 2795.99 3191.71 -704.06 3268.44 347.56 2.43 BP _MWD+IFR+MS 98 8986.26 39.39 341.03 95.56 7861.58 2849.00 3248.66 -721.15 3327.74 347.48 3.54 BP _MWD+IFR+MS • 99 9080.76 43.63 338.67 94.50 7932.33 2906.45 3307.42 -742.76 3389.79 347.34 4.78 BP MWD+IFR+MS 100 9175.21 47.00 335.53 94.45 7998.75 2969.25 3369.23 -768.93 3455.86 347.14 4.28 BP MWD+IFR+MS 101 9270.04 49.37 330.85 94.83 8061.99 3036.87 3432.25 -800.84 3524.44 346.87 4.45 BP M[n]D+IFR+MS 102 9366.56 51.59 325.93 96.52 8123.43 3109.66 3495.59 -839.88 3595.07 346.49 4.55 BP MWD+IFR+MS 103 9459.99 53.40 322.09 93.43 8180.32 3183.10 3555.52 -883.45 3663.63 346.05 3.79 BP MWD+IFR+MS 104 9555.52 56.86 320.35 95.53 8234.93 3261.18 3616.59 -932.55 3734.89 345.54 3.92 BP MWD+IFR+MS 105 9650.67 56.38 320.53 95.15 8287.29 3340.44 3677.85 -983.15 3806.99 345.03 0.53 BP MWD+IFR+MS 106 9743.50 55.31 319.73 92.83 8339.40 3417.09 3736.81 -1032.39 3876.80 344.56 1.36 BP MWD+IFR+MS 107 9840.48 54.36 319.91 96.98 8395.26 3496.22 3797.38 -1083.54 3948.94 344.07 0.99 BP MWD+IFR+MS 108 9933.50 54.07 320.49 93.02 8449.65 3571.51 3855.35 -1131.84 4018.06 343.64 0.59 BP MWD+IFR+MS 109 10028.64 56.83 319.97 95.14 8503.60 3649.69 3915.57 -1181.97 4090.08 343.20 2.94 BP MWD+IFR+MS 110 10122.82 57.85 319.96 94.18 8554.42 3728.82 3976.28 -1232.97 4163.05 342.77 1.08 BP MWD+IFR+MS 111 10217.39 56.98 320.28 94.57 8605.35 3808.33 4037.42 -1284.07 4236.70 342.36 0.96 BP MWD+IFR+MS 112 10312.79 57.44 319.69 95.40 8657.02 3888.37 4098.85 -1335.63 4310.97 341.95 0.71 BP _ _MWD+IFR+MS • 113 10346.03 58.00 320.34 33.24 8674.77 3916.42 4120.38 -1353.69 4337.05 341.81 2.36 BP MWD+IFR+MS 114 10422.25 63.02 321.00 76.22 8712.28 3982.55 4171.69 -1395.72 4398.98 341.50 6.63 BP Inc+Trend 115 10453.43 69.93 323.43 31.18 8724.72 4010.97 4194.27 -1413.21 4425.96 341.38 23.28 BP MWD+IFR 116 10486.63 77.06 325.36 33.20 8734.15 4042.47 4220.14 -1431.72 4456.39 341.26 22.19 BP MWD+IFR 117 10512_72 84.06 326.80 26.09 8738.42 4067.82 4241.49 -1446.07 4481.22 341.17 27.38 BP MWD+IFR 118 10550.39 91.30 325.54 37.67 8739.95 4104.88 4272.73 -1467.01 4517.56 341.05 19.51 BP MWD+IFR 119 10582.78 98.29 324.94 32.39 8737.24 4136.76 4299.23 -1485.40 4548.61 340.94 21.66 BP MWD+IFR 120 10613.30 98.81 318.54 30.52 8732.70 4166.79 4322.92 -1504.08 4577.10 340.82 20.81 BP MWD+IFR [(C)2007 IDEAL ID12_OC_09] SCHLUMBERGER Survey Report 17-Jun-2007 21:56:36 Page 6 of 8 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 10639.40 98.62 312.29 26.10 8728.74 4192.57 4341.28 - 1522.18 4600.41 340.68 23.68 BP MWD+IFR+MS 122 10672.73 94.39 310.27 33.33 8724.96 4225.54 4363.12 - 1547.06 4629.28 340.48 14.05 BP MWD+IFR+MS 123 10701.38 92.96 311.73 28.65 8723.13 4254.01 4381.88 - 1568.64 4654.19 340.30 7.13 BP MWD+IFR+MS 124 10733.18 91.37 311.97 31.80 8721.93 4285.69 4403.08 - 1592.31 4682.15 340.12 5.06 BP MWD+IFR+MS 125 10765.83 93.10 310.78 32.65 8720.65 4318.19 4424.64 - 1616.79 4710.78 339.93 6.43 BP MWD+IFR+MS 126 10797.13 127 10828.58 128 10861.99 129 10893.73 130 10924.75 131 10957.12 132 10990.25 133 11020.94 134 11053.95 135 11086.44 136 11117.48 137 11147.70 138 11179.91 139 11211.53 140 11244.15 141 11276.28 142 11307.16 143 11340.22 144 11372.50 145 11399.20 146 11435.28 147 11467.23 148 11498.34 149 11530.22 150 11562.90 93.13 305.54 31.30 8718.95 4349.11 4443.95 -1641.35 4737.38 339.73 16.72 BP _MWD+IFR+MS 94.43 304.48 31.45 8716.88 4379.87 4461.95 -1667.06 4763.20 339.51 5.33 BP _M[n1D+IFR+MS 94.26 300.01 33.41 8714.35 4412.17 4479.72 -1695.23 4789.75 339.27 13_35 BP _MWD+IFR+MS • 93.95 298.46 31.74 8712.07 4442.42 4495.18 -1722.85 4814.03 339.03 4.97 BP _MWD+IFR+MS 91.96 299.45 31.02 8710.48 4471.98 4510.18 -1749.96 4837.77 338.79 7.16 BP_ MWD+IFR+MS 90.39 299.10 32.37 8709.81 4502.91 4526.00 -1778.18 4862.78 338.55 4.97 BP _MWD+IFR+MS 91.04 298.92 33.13 8709.40 4534.53 4542.07 -1807.16 4888.38 338.30 2.04 BP_ Min7D+IFR+MS 90.73 296.20 30.69 8708.92 4563.58 4556.27 -1834.36 4911.66 338.07 8.92 BP_ MWD+IFR+MS 90.11 293.88 33.01 8708.68 4594.32 4570.24 -1864.26 4935.84 337.81 7.27 BP_ Min1D+IFR+MS 89.94 293.97 32.49 8708.67 4624.35 4583.41 -1893.96 4959.31 337.55 0.59 BP_ MWD+IFR+MS 89.77 290.91 31.04 8708.75 4652.72 4595.26 -1922.65 4981.26 337.30 9.87 BP_ MWD+IFR+MS 90.69 289.47 30.22 8708.63 4679.84 4605.69 -1951.01 5001.88 337.04 5.65 BP_ MWD+IFR+MS 91.21 289.67 32.21 8708.09 4708.58 4616.48 -1981.35 5023.71 336.77 1.73 BP_ MWD+IFR+MS 90.01 288.36 31.62 8707.75 4736.67 4626.78 -2011.25 5045.02 336.51 5.62 BP_ MWD+IFR+MS 88.91 286.65 32.62 8708.06 4765.23 4636.59 -2042.35 5066.47 336.23 6.23 BP MWD+IFR+MS 88.50 285.36 32.13 8708.79 4792.95 4645.45 -2073.23 5087.09 335.95 4.21 BP MWD+IFR+MS 89.25 281.73 30.88 8709.39 4818.89 4652.68 -2103.24 5105.98 335.67 12.00 BP_ MWD+IFR+MS • 89.97 280.86 33.06 8709.62 4845.94 4659.15 -2135.66 5125.30 335.37 3.42 BP_ MWD+IFR+MS 92.68 280.45 32.28 8708.87 4872.14 4665.12 -2167.37 5144.01 335.08 8.49 BP_ MWD+IFR+MS 93.20 280.25 26.70 8707.50 4893.71 4669.91 -2193.60 5159.45 334.84 2.09 BP_ MWD+IFR+MS 91.11 280.27 36.08 8706.15 4922.83 4676.33 -2229.07 5180.43 334.51 5.79 BP_ MWD+IFR+MS 91.00 278.66 31.95 8705.56 4948.38 4681.58 -2260.58 5198.79 334.23 5.05 BP MWD+IFR+MS 91.72 276.34 31.11 8704.82 4972.59 4685.64 -2291.42 5215.92 333.94 7.81 BP MWD+IFR+MS 91.48 276.10 31.88 8703.93 4996.95 4689.09 -2323.10 5233.01 333.65 1.06 BP MWD+IFR+MS 91.76 275.19 32.68 8703.01 5021.70 4692.31 -2355.60 5250.39 333.34 2.91 BP MWD+IFR+MS [(C)2007 IDEAL ID12_OC_09] SCHLUMBERGER Survey Report 17 -Jun-2007 21:56:36 Page 7 of 8 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 11594.06 91.38 273.24 31.16 8702.15 5044.79 4694.60 -2386.67 5266.44 333.05 6.37 BP MtnID+IFR+MS 152 11626.71 91.17 273.35 32.65 8701.43 5068.64 4696.47 -2419.25 5282.96 332.75 0.73 BP MWD+IFR+MS 153 11658.60 91.28 272.05 31.89 8700.75 5091.70 4697.97 -2451.10 5298.95 332.45 4.09 BP M[n7D+IFR+MS 154 11689.94 91.28 269.18 31.34 8700.04 5113.56 4698.31 -2482.43 5313.81 332.15 9.16 BP MWD+IFR+MS 155 11722.18 90.90 266.99 32.24 8699.43 5135.01 4697.23 -2514.64 5327.98 331.84 6.89 BP MWD+IFR+MS 156 11754.97 91.00 267.19 32.79 8698.89 5156.39 4695.57 -2547.39 5342.05 331.52 0.68 BP MWD+IFR+MS 157 11786.28 91.17 267.34 31.31 8698.29 5176.89 4694.07 -2578.65 5355.73 331.22 0.72 BP _MWD+IFR+MS 158 11818.08 91.17 267.14 31.80 8697.65 5197.69 4692.54 -2610.41 5369.75 330.91 0.63 BP _MWD+IFR+MS ~ 159 11848.82 91.24 267.44 30.74 8697.00 5217.82 4691.09 -2641.11 5383.47 330.62 1.00 BP MWD+IFR+MS 160 11880.28 91.38 268.24 31.46 8696.28 5238.65 4689.91 -2672.54 5397.93 330.32 2.58 BP MWD+IFR+MS 161 11912.35 91.21 268.11 32.07 8695.55 5260.02 4688.88 -2704.58 5412.99 330.02 0.67 BP MWD+IFR+MS 162 11944.35 91.28 267.65 32.00 8694.86 5281.23 4687.70 -2736.55 5428.01 329.72 1.45 BP Min7D+IFR+MS 163 11975.74 91.31 268.36 31.39 8694.15 5302.08 4686.61 -2767.92 5442.95 329.43 2.26 BP M[n7D+IFR+MS 164 12007.72 91.17 268.51 31.98 8693.46 5323.50 4685.74 -2799.88 5458.52 329.14 0.64 BP M[n7D+IFR+MS 165 12040.03 91.17 268.21 32.31 8692.80 5345.11 4684.81 -2832.17 5474.36 328.85 0.93 BP M[n7D+IFR+MS 166 12071.24 91.21 267.95 31.21 8692.15 5365.87 4683.77 -2863.35 5489.67 328.56 0.84 BP MWD+IFR+MS 167 12103.46 91.38 267.85 32.22 8691.42 5387.23 4682.59 -2895.54 5505.52 328.27 0.61 BP MWD+IFR+MS 168 12135.15 91.00 268.65 31.69 8690.76 5408.38 4681.62 -2927.21 5521.42 327.98 2.79 BP MWD+IFR+MS 169 12166.92 89.15 271.85 31.77 8690.72 5430.39 4681.76 -2958.98 5538.45 327.71 11.63 BP MWD+IFR+MS 170 12198.84 88.77 272.34 31.92 8691.30 5453.24 4682.92 -2990.87 5556.53 327.43 1.94 BP MWD+IFR+MS 171 172 12231.81 12263.35 89.46 89.91 272.69 272.73 32.97 31.54 8691.81 8691.98 5477.02 5499.83 4684.37 4685.86 -3023.80 -3055.31 5575.54 5593.94 327.16 326.89 2.35 1.43 BP BP _MWD+IFR+MS _MWD+IFR+MS ~ 173 12295.06 89.84 273.06 31.71 8692.05 5522.84 4687.46 -3086.98 5612.64 326.63 1.06 BP MWD+IFR+MS 174 12327.49 87.77 272.16 32.43 8692.73 5546.26 4688.94 -3119.36 5631.75 326.37 6.96 BP M[nTD+IFR+MS 175 12359.01 88.02 272.36 31.52 8693.89 5568.88 4690.18 -3150.84 5650.27 326.11 1.02 BP MWD+IFR+MS 176 12391.86 87.85 271.84 32.85 8695.07 5592.38 4691.38 -3183.64 5669.63 325.84 1.66 BP MWD+IFR+MS 177 12423.02 87.61 271.67 31.16 8696.30 5614.55 4692.34 -3214.76 5687.95 325.58 0.94 BP MWD+IFR+MS 178 12454.03 87.68 272.10 31.01 8697.58 5636.65 4693.36 -3245.73 5706.35 325.33 1.40 BP MWD+IFR+MS 179 12486.54 88.81 271.40 32.51 8698.58 5659.78 4694.35 -3278.21 5725.69 325.07 4.09 BP MWD+IFR+MS 180 12518.97 89.87 272.14 32.43 8698.95 5682.87 4695.35 -3310.62 5745.13 324.81 3.99 BP MWD+IFR+MS [(C)2007 IDEAL ID12_OC_09~ SCHLUMBERGER Survey Report 17 -Jun-2007 21:56:36 Page 8 of 8 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 12549.96 89.87 273.07 30.99 8699.02 5705.25 4696.76 - 3341.58 5764.17 324.57 3.00 BP MWD+IFR+MS 182 1258Q.48 89.60 272.94 30.52 8699.16 5727.44 4698.36 - 3372.06 5783.20 324.33 0.98 BP MWD+IFR+MS 183 12593.68 89.53 273.09 13.20 8699.26 5737.03 4699.05 - 3385.24 5791.46 324.23 1.25 BP MWD+IFR+MS 184 12650.00 89.45 273.09 56.32 8699.76 5778.03 4702.09 - 3441.48 5826.95 323.80 0.14 Projected TD [(c)2007 IDEAL ID12_OC_09] ~ • ~ ~ Schlumberger Drilling & Measurements MWD/LWD Log Product Delivery Customer BP Exploration (Alaska) Inc. Dispatched To: Christine Mahnken Well No 12-12A Date Dispatched: 27-May-07 Installation/Rig Nabors 7ES Dispatched By: Franklin Medina LWD Log Delivery V1.1,10-02-03 Data No Of Prints No of Floppies Surveys 2 1 Received By: Please sign and return to: Drilling & Measurements LWD Division ~~ 2525 Gambell Street, Suite 400 ~ ~ ~~ ~ ~ Anchorage,Alaska 99501 nroselC~slb.com Fax:907-561-8317 ~~~~ ~`~~ 06/15/07 ~ ~ j ~ :~ Schiumherger Alaska Data & Consulting Services 2525 Gambell Street, Suite 400 Anchorage, AK 99503-2838 ATTN: Beth ~ p~ -0~19 Well Jnh !t 1 nn nne~rintinn NO. 4304 Company: State of Alaska Alaska Oil & Gas Cons Comm Attn: Christine Mahnken 333 West 7th Ave, Suitt+ 100 Anchorage, AK 99501 Fieid: Prudhoe Bay 11~4n RI f`nlnr (`f1 P1-16 11637331 WARMBACKS & SBHPS 05/04/07 1 P1-14 11637332 WARMBACKS & SBHPS OS/05/07 1 01-05 11626486 USIT (CEMENT) 05/13l07 1 07-OS 11626486 USIT (CORROSION) 05/13I07 1 MPH-14 11638633 INCLINOMETER-DIRECTION LOG 05/13/07 1 MPS-01A 1159454 MDT 05/28/07 9 11-18 11626097 USIT 05/26/07 1 09-15A 11629015 SCMT 06/01/07 1 12-12A 11695061 CEMENT IMAGE 8 BOND LOG 05/28107 1 03-36A 11629014 SCMT 05/31107 1 S-401 11626492 SCMT 06/11/07 1 r ~~.r..a~ ~v~~1~VYYLG/VG n~vc~r ~ 07 JIVI~IItlV N17V RCIURIY11717 VIYC NIJPT CNli17 I V: BP Exploration (Alaska) Inc. Petrotechnical Data Center LR2-1 900 E. Benson Blvd. ~ ~ , ~' ~` ~ ~ ~ ~t~ ~~~ .., ~ ~? Anchorage, Alaska 99508 ~,~ ~~t~_„ ~ ~+~~~ ~~~ ~~~--=~~~'"~ Date Delivered: el.: ., ~~i*, ~ `, a, +~4 s~~ ~"3~a, a A~)n~. ~~~8t~~'i'~1~~4~1:~ . . r^~i~ ;,~`.s~ ~'~~.~a, Alaska Data & Consulting Services 2525 Gambell Street, Suite 400 Anchorage, AK 99503-2838 ATTN: Beth / Received by: ~_~'°'jj 12-12A • ~ Page 1 of 1 Maunder, Thomas E (DOA) From: Nadem, Mehrdad (NademM@BP.com] Sent: Tuesday, May 22, 2007 3:39 PM To: tom_maunder@admin.state.ak.us Subject: 12-12A a~^~ ,. ~ ~~ Attachments: 12-12A Summary of Drilling Completion.ZlP Tom, I changed the mud weight for 12-12A due to potential over pressure in the Ugu. This change was made to ensure we stayed over balanced to the formation. Attached table is the mud weight for the intermediate hole: 8.5" intermediate hole Depth MD (ft) Mud Wt. (Ib/gal) Plastic Viscosity (cp) Yield Point (Ib/100ft2) API Fluid Loss (ml/30min) HTHP Fiuid Loss @ 200F (ml/30min) pH Drill Solids (%) MBT 3,500 Mi!ling 10.0 15-22 30 - 40 6- 8 N/C 9-9.5 < 6.0 <20 3,500- 9,350' 10.0 - 10.5 8- 12 20 - 26 4.0 - 8.0 N/C 9-9.5 < 6.0 <20 9,350' - 10,364' (9493 MD -HRZ) 11.5 16 - 20 25 - 30 < 6.0 < 10.0 9-9.5 < 6.0 <20 Regrads, Mehrdad Nadem Operations Drilling Engineer 907/564-5941 «12-12A Summary of Drilling Completion.ZlP» 7/6/2007 4.I Mud Program 8.5" intermediate hole 6-1/8" Production hole u Type: FloPro SF Depth (ft) Density ~ppJ) pV YP LSRV MBT pH 10,364,-12,639' 8.4 - 8.5 8- 15 24 - 30 >20,000 < 6 ppb 9- 9.5 Logging Program 9-5/8" Surface Casing: Sample Catchers - None Drillin : N/A O en Hole: N/A Cased Hole: USIT/CBL/CCL 8-1/2" Intermediate: Sample Catchers - None Drilling: Dir/GR/Res/MWD/PWD O en Hole: None Cased Hole: None 6-1/8" Production: Sample Catchers - as required by Geology Drillin : Dir/GR/Stratasteer/Resistivit /Azimuthal Densit Open Hole: None Cased Hole: None Cementing Program Casing String: 7", 26#, L-80, BTC-M x TC-II Tieback Slurry Design Basis: Lead slurry: None planned. o Tail slurry: 450 of the 9-5/8 X 7" annulus to 2,900 MD with 0/o excess. Pre-Flush 20 bbls of viscosified seawater Freeze Prot 82 bbls of diesel Fluids Sequence / Volume: S acer None lanned Lead Slur None lanned Tail Slur 13.2 bbls / 74 cf / 63.78 sxs Class 'G', 15.8 ; 1.16 cf/sk. 12-12A Well Plan Re: 12-12A Revised Work Scope for Pre Rig Program Mehrdad, You know better of the well conditions. Main issue is placing cement proximate to the packer. 200' outside and 300' inside should do it nicely. Call or message with any questions. Tom Maunder, PE AOGCC Nadem, Mehrdad wrote, On 4/19/2007 3:16 PM: Tom, Bas~d on my discussion with the Well Graups Operations on th~ Slope, we v~auld like to slightly moc[ified the pre rig uvork for 12-12. As discussed during our telepf~one conversa#ions, AOGCC has r~o objection with proceeding with thsse modification; 1. C MIRU CTU. RIH to above the PBR assembly at 9,558' MD. With a tubing punch, punch 5' of holes in the tubing. Punch holes starting at ~ 9,500' MD- please note that tubing tally for the 5-1/2" is incomplete. As such, I am unable to determine whether the 9,500' would correspond to location of a tubing collar. 2. F Full bore circulate the IA and tubing to either seawater or KCI. 3. C Lay cement on top of the plug that is stuck in the tubing tail. This plug is set at 9,601'. Pump 12.51 of cement for the plug and abandon operations. This would leave 300' of cement in the tubing and ~200' of cement in the 9-5/8" x 5.5" inner annulus. There is no concern if the top of cement is higher than 9,300' MD. The regulatory limit requires 100' of cement plug. 4. F CMIT X IA to 3500 psi for 30 minutes. 5. E Jet cut the tubing at 3800'. 6. O Set BPV, pull wellhouse and level pad. Please ca~l if you have any questions ~r cor~nments. Mehrdad Nadem Operations Drilling Engineer Phone:907/564-5941 CeII: 907/440-0213 Emai I: nademmC bp.com From: Thomas Maunder ~mailto;tam_rnaunder~admin.state,ak.us] Sent: Tuesday, April 17, 2007 1:37 PM To: Hobbs, Greg S (ANC) Subject: Re: 12-12A Revised Work Scope for Pre Rig Program 1 of 2 4/19/2007 3:38 PM ~ ~ Re: 12-12A Revised Work Scope for Pre Rig Program ~ ~ I,l~t~~k;~ 1€~r ~c~c~inentin~ C:~re~, Tom Hobbs, Greg S(ANC) wrote, On 4/17/2007 1:28 PM: AI I- Following the failed attempt to retrieve the plug from the tailpipe on 12-12 A with Coil, and discussions with Tom Maunder and Jay Grover, the following plan will be followed to ready 12-12 for its upcoming Sag Sidetrack: 1. C MIRU CTU. RIH to a point within a joint or two above the PBR assembly at 9558' MD. With a tubing punch, punch 5' of holes in the tubing. Circulate the IA and tubing to to 9.8 brine. Lay cement on top of the plug that is stuck in the tubing tail. Pump a 100' balanced plug through the holes so that there is 100' of cement outside and inside the tubing to abandon the perforated intervals below. 2. F CMIT X IA to 3500 psi. 2. E Jet cut the tubing at 3800'. 3. F Freeze protect the top ~100' of the well with diesel (IA and tubing). 4. O Set BPV, pull wellhouse and level pad. I will add this to the pre rig schedule tommorrow. Please respond with any comments or questions. My cell is 980-1439. Greg 2 of 2 4/19/2007 3:38 PM 12-12A Revised Work Scope for Pre Rig Program ~ ~ All- Following the failed attempt to retrieve the plug from the tailpipe on 12-12 A with Coil, and discussions with Tom Maunder and Jay Grover, the following plan will be followed to ready 12-12 for its upcoming Sag Sidetrack: 1. C MIRU CTU. RIH to a point within a joint or two above the PBR assembly at 9558' MD. With a tubing punch, punch 5' of holes in the tubing. Circulate the IA and tubing to to 9.8 brine. Lay cement on top of the plug that is stuck in the tubing tail. Pump a 100' balanced plug through the holes so that there is 100' of cement outside and inside the tubing to abandon the perforated intervals below. 2. F CMIT X IA to 3500 psi. 2. E Jet cut the tubing at 3800'. 3. F Freeze protect the top ~100' of the well with diesel (IA and tubing). 4. O Set BPV, pull wellhouse and level pad. I will add this to the pre rig schedule tommorrow. Please respond with any comments or questions. My cell is 980-1439. Greg 1 of 1 4/17/2007 1:37 PM ~ ~ o ~ ~ ~ ~ ~ SARAH PAUN, GOVERNOR 1~T ~1 ~~St~r$1~~T ~~I ~-`D `V[~S 333 W. 7thAVENUE, SUITE 100 C01`S"~~IRQ~-ii~" C~~rII '~7'~~7"'I~~ ANCHORAGE, ALASKA 99501-3539 PHONE (907) 279-1433 FAX (907) 276-7542 Greg Hobbs Senior Drilling Engineer BP Exploration (Alaska), Inc. PO Box 196612 Anchorage, AK Re: Prudhoe Bay Field, Prudhoe Bay Oil Pool, PBU 12-12A BP Exploration (Alaska), Inc. Permit No: 207-049 Surface Location: 1015' FSL, 751' FEL, SEC. 18, T10N, T15E, UM Bottomhole Location: 443' FSL, 4147' FEL, SEC. 07, T1ON, R15E, UM Dear Mr. Hobbs: Enclosed is the approved application for permit to redrill 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 A?aska 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 inspector at (907)~59-3607 (pager). DATED this ~ day of April, 2007 cc: Department of Fish & Game, Habitat Section w/o encl. Department of Environmental Conservation w/o encl. STATE OF ALASKA ~ ~G ~ ALAS~IL AND GAS CONSERVATION COMMI~ PERMIT TO DRILL ~ ~ ~` 20 AAC 25.005 ~ECEIVED APR. 0 5 2007 1 a. Type of work ^ Drill ~ Redrili ^ Re-Entry 1 b. Current Well Class ^ Exploratory ^ Devetopment Gas ^ Service ^ Multiple Zone ^ Stratigraphic Test ~ Development Oii ^ Single Zone 1 c. Speci I f~: Of1'1t111SS1Q ^ Coalbed MethaneA~~drates ^ Shale Gas 2. Operator Name: BP Exploration (Alaska) Inc. 5. Bond: ~ Blanket ^ Single Well Bond No. 6194193 , 11. Well Name and Number: PBU 12-12A - 3. Address: P.O. Box 196612, Anchorage, Alaska 99519-6612 6. Proposed Depth: _ MD 12639 TVD 8696 12. Field / Pool(s): Prudhoe Bay Field / Prudhoe Bay ~ 4a. Location of Well (Governmental Section): Surface: 1015' FSL 751' FEL SEC 18 T10N R15E UM ~ 7. Property Designation: ADL 028329 - Pool , , , , , . Top of Productive Horizon: 164' FSL, 2525' FEL, SEC. 07, T10N, R15E, UM ~ 8. Land Use Permit: 13. Approximate Spud Date: May 1, 2007 Total Depth: 443' FSL, 4147' FEL, SEC. 07, T10N, R15E, UM , 9. Acres in Property: 2560 . 14. Distance to Nearest Property: 17,750' - 4b. Location of Well (State Base Plane Coordinates): Surface: x-696843 y-5931327 Zone-ASP4 10. KB Elevation Planned (Height above GL): 63,8 feet 15. Distance to Nearest Well Within Pool: 685' ~ 16. Deviated Wells: Kickoff Depth: 3500 feet Maximum Hole An le: 101 de rees 17. Maximum Anticipated Pressures in psig (see 20 AAC 25.035) Downhole: 3200 Surface: 2338 48: Casin - Pro ram: S cifications To - Settin De th -8o ttom ' uanti ofCement c.f. or sacks Hole Casin Wei ht Grade Cou lin Len th MD TVD MD TVD includin sta e data N/A 7" 26# L-80 TCII 3350' Surface Surface 3350' 3343' Tieback: 64 sx Class'G' 8-1/2" 7" 26# L-80 BTC-M 7014' 3350' 3343' 10364' 8686' 717 sx Class 'G' 91 sx Class 'G' 6-1/8" 4-1/2" 12.6# L-80 IBT-M 2425' 1 214' 813 ' 1263 ' 6' ncemente Slotte Liner 99. PRESE NT WELL CONDITION S UMAAARY (To be completed far Redrill and Re-entry Qperations) Total Depth MD (ft): 10870 Total Depth TVD (ft): Plugs (measured): g47~ 9601 Effective Depth MD (ft): 10837 Effective Depth TVD (ft): 9446 Junk (measured): ~ooso~, ~oazr, ~oazs~ asing Length Size Cement Votume MD TVD Conductor / Structural g0' 20" 300 sx P rmafrost 110' 110' Surface 2664' 13-3/8" 2750 sx Fondu 400 sx Permafrost 2664' 2664' Intermediate Pr i n 9933' 9-5/8" 500 sx CI s'G' 9933' 87 8' Liner 1251' 7" 300 sx Class'G' 9619' - 10870' 8502' - 9471' Perforation Depth MD (ft): 9906' - 10162' Perforation Depth TVD (ft): 8737' - 8935' 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 re ing is true and correct. Contact Mehrdad Nadem, 564-5941 Printed Name Gre b Title Senior Drilling Engineer Prepared By Name/Number: '. ~' '° Terrie Hubble, 564-4628 Si nature Phone 564-4191 Date ~~. . Commission Use Onl Permit To Drill Number:~0 D~ ~ API Number: 50-029-20610-01-00 Permit A roval See cover letter for Date: otherre uirements Conditions of Approva~: ~ If box is checked, well may not be used to explore fo~, test, or produce coalbed methane, gas hydrates, or gas contained shales: 3~~ ~a,'~ ~~.~~~. Samples Req'd: ^ Yes ~ No Mud Log Req'd: ^ Yes ~No HZS Measures: ~Y ^ No irectional Survey Req'd: ~Yes ^ No Other: ~`` ~~~~r~,.~sp~~-~c~~ac.a~~C~~~~~)`~ ~i~ APPROVED BY THE COMMISSION Date - ~ ~ , COMMISSIONER Form 10-401 Revised 12/2005 I~ ~ ~~ % ~ Submit In Duplicate 0~~~1~ v ~ ~ To: Tom Maunder, Senior Petroleum Engineer b Alaska Oil & Gas Conservation Commission ~ From: Mehrdad Nadem, ODE Date: Apri14, 2007 Re: 12-12A Sidetrack Permit to Drill The 12-12A rotary sidetrack is scheduled to be drilled by Nabors 27E with an estimated spud date of May 1, 2007. The sidetrack plan is to exit the 12-12 "main" wellbore from the 9-5/8" casing at ~3,500' MD with an 8-1/2" BHA. The 8-1/2" hole will then be drilled to the top of the Sag River formation at ~10,364' where a 7" drilling liner will be run and cemented. A 6-118" production hole will then be drilled building to horizontal in the Sag~ River formation then drilled horizontally for approximately ~1,840 to a final TD of 12,639' MD. A slotted 4-1/2" production liner will be run from TD to 150' back into the 7" drilling liner. This well will be completed with a 4-1/2" chrome completion. Please note that the Operations Summary in this permit application differs from the version provided in the Sundry Application. The previous Operations Summary included cut and pull of the 9-5/8" casing. The plan presented below includes running a 7" tieback to surface. Well Name: 12-12A Planned Well Summarv Horizontal Target Well 12-12A Well Type Sidetrack Sag Producer Objective API Number: 50-029-20610-01 Current Status 12-12 is Shut-In Estimated Start Date: May-1-2007 Time to Com lete: 32.38 Days Surface Northin Eastin Offsets TRS Location 5,931,327 696,843 1015' FSL / 751' FEL 10N, 15E, 18 Northin Eastin TVDss Offsets TRS Target 5,935,708 694938 -8,704 164' FSL / 2525' FWL 10N, 15E, 7 Locations 5,935,909 694,209 -8,702 2725' FNL / 2280' FWL 10N, 15E, 7 5,935,941 693,735 -8,698 428' FSL / 1337' FWL 10N, 15E, 7 Bottom Northin Eastin TVDss Offsets TRS Location 5,935,945 693,308 -8,696 443' FSL / 911' FWL 10N, 15E, 7 12-12A Permit to Drill Application Page 1 ~ Planned KOP: 3500'MD / 3485'TVDss ~ Planned TD: 12,639'MD / 8,696' TVDss Ri : Nabors 27E CBE: 40.88' Directional Proqram RTE: 63.8' A roved Well lan: WP08 Exit oint: 3500' MD / 3485' TVD Maximum Hole Inclination: ~55.370 (tangent sail angle). ~101.7 in the 6-1/8 horizontal section. Major risk criteria fail for four wells. Wells 01-07A and 01-18 will be either Proximity Issues: minor risked or surveyed with a gyro. Well 01-07 has been plugged back and ma'or risk criteria fails for 12-12 ri ht outside the window. Surve Pro ram: MWD Standard + IFR / Cassandra / MS Nearest Well: 685' in TSGR to 12-19. Nearest Property Line 17,750' to Unit Boundary Geoloqical Proqnosis Formation To s and Estimated Pore Press. Formation MD TVDss Commercial Hydrocarbon Bearing ( es/no) ( EMW / Psi) SV4 -2676 SV2 3592.5 -3501 SV1 4033.44 -3900 UG4 4880.33 -4572 UG3 5036.04 -4694 UG1 5990.71 -5442 W S2 6667.15 -5972 WS1 6972.19 -6211 CM3 7309.13 -6475 CM2 7986.85 -7006 CM1 9152.15 -7904 THRZ 9538.74 -8146 BHRZ 9827.34 -8310 LCU 10008.6 -8413 TJB 10015.64 -8417 TSGR 10374.48 -8621 es 3200 TSHU 10422.7 -8646 es 3200 Casing/Tubing Program Hole Size Casing / Tubin O.D. Wt/Ft Grade Conn. Length Top MD / TVD Bottom MD / TVD N/A 7" Tieback 26# L-80 TCII 3,350' Surface 3,350'/3,343' 8-1/2" 7" 26# L-80 BTGM 7,014' 3,350' / 3,343' 10,364' / 8,686' 6-1/8" 41h"-Slotted 12.6# L-80 IBT-M 2,425' 10,214' / 8,130' 12,639' / 8,696' Tubing 41h" 12.6# 13Cr-80 VamTop 10,214' Surface 10,214' / 8,130' 12-12A Permit to Drill Application Page 2 ~ Mud Program ~ Hole Section / operation: 8-1/2" Intermediate Hole Type: Fresh Water LS ND Depth (ft) Density PV YP API FL ml/30min MBT pH Milling Fluid 9 15 - 22 30 - 40 6- 8 <20 9- 9.5 3,500'-9,350' 9- 9.5 8- 12 20 - 26 6- 8 <20 9- 9.5 9,350 - 10,364' 11.5 16 - 20 25 - 30 <6 <20 9- 9.5 Hole Section / operation: 6-1/8" Production Interval Type: FloPro SF Depth (ft) Density PV YP LSRV MBT pH 10,364,-12,639' 8.4 - 8.5 8- 15 24 - 30 >20,000 < 6 ppb 9- 9.5 Logging Program 9-5/8" Surface Casin : Sample Catchers - None Drilling: N/A Open Hole: N/A Cased Hole: USIT/CBUCCL 8-1/2" Intermediate: Sample Catchers - None Drilling: Dir/GR/Res/MWD/PWD Open Hole: None Cased Hole: None 6-1/8" Production: Sample Catchers - as required by Geology Drilling: Dir/GR/Res/Stratasteer/Resistivit /Azimuthal Densit Open Hole: None Cased Hole: None Cementing Program Casin Strin : 7", 26#, L-80, BTC-M x TC-II Tieback Slurry Design Basis: Lead slurry: None planned. Tail slurry: 450' of the 9-5/8" X 7" annulus to 2,900' MD with 0°/a excess. Pre-Flush 20 bbls of viscosified seawater Freeze Prot 82 bbls of diesel Fluids Sequence / Volume: S acer None lanned Lead Slur None lanned Tail Slur 13.2 bbls / 74 cf / 63.78 sxs Class `G', 15.8 ; 1.16 cf/sk. 12-12A Permit to Drill Application Page 3 ~ ~ Casin Strin : 7", 26#, L-80, BTC-M Intermediate Liner Lead slurry: Remainder of 8-1/2" x 7" annulus with 40% excess, plus 150' of 9-5/8" X 7" liner lap. Slurry Design Basis: Tail slurry: 500' of 8-1/2" x 7" annulus with 40% excess, plus 80' of 7", 26# shoe track. Pre-Flush None Planned Fluids Se / V l S acer 20 bbls of 11.7 Mud PUSH quence ume: o Lead Slur 216.6 bbl / 1,218 ft / 716.64 sx Class G, 11.8 ; 1.70 ft /sk. Tail Slur 19 bbls / 105.6 ft / 91 sx Class `G', 15.8 ; 1.16 ft /sk. Casin Strin : 4-1/2", 12.6#, L-80 IBT-M Slotted Production Liner Slurry Design Basis: Not Applicable Pre-Flush N/A Fluids Se / V l S acer N/A quence ume: o Lead Slur N/A Tail Slur N/A Casinq / Formation Inteqritv Testinq Test Test Point Test Type Test pressure 9-5/8" Casing Prior to Mill Window f/Whi stock De arture Casing Test 30 min recorded 3,500 psi surface 9-5/8" Window 20' beyond mid-window FIT 12.1 ppg EMW 7" Liner to Surface Landing collar to surface Casing Test (30 min recorded) 3,500 psi surface 7" Tieback to surface Float Equipment to surface Casing test (30 min recorded) 3,500 psi surface 7" Shoe 20' beyond shoe FIT 9.5 ppg EMW 12-12A Permit to Drill Application Page 4 ~ Well Control ~ Well control equipment consisting of 5,OOOpsi working pressure pipe rams (2), blind/shear rams, and an annular preventer will be installed and is capable of handling maximum potential surface pressures. BOPE and drilling fluid system schematics are currently on file with the AOGCC. Well Interval: 8~h" intermediate interval Maximum antici ated BHP: 3,200 si at 8,621' TVD Maximum surface ressure: 2,338 SI (based upon BHP and a full column of gas from TD ~ 0.10 psi/ft) Calculated kick tolerance: Greater than 155 bbls with 11.5 pp EMW FIT Planned BOPE test pressure: 250 psi low / 3,500 psi high - 7 day test cycle until a window is milled in 9-5/8" casing. Once a window is milled a 14 day test cycle can commence. BOPE configuration for 7" BPXA requests for a variance to use variable Bore Rams rather than C/O Lin r to 7" pipe rams while running the 7" liner. In the event of a kick the rig will ~ follow the current, best practice, making up a safety valve crossed over to Q~~~`~` ~~';(~ ` casing thread, then changing elevators and picking up a joint of drill pipe. r ~ (~ ( This confi uration rovides two sets of em lo able rams, rather t Planned BOPE function test B A requests a variance to the provisions of 20 A . 5(e)(10)C ' ~ ~ regar ~ g nction p test requirem after the use of BOP ram ~-E C -`~~-~ type ent for other than we ntrol equivalent purposes, exceqt ~~~~~- Q~~-~~~~,~~ w n the ro ine use of BOP equipme ay have compromised their 4 fectiveness. xample would be wh ' e rams are inadvertently , ~ as a~s `~~`~~ closed on a tool jo' during routine eration . The activities asso ~ ted ~ with this re uest will n ise the inte rit BOP ment. Well Interval: 6-1/8" roduction liner section Maximum antici ated BHP: 3,200 si at 8,621' TVD Maximum surface ressure: 2,338 SI (based upon BHP and a full column of gas trom TD ~ 0.10 psi/ft) Calculated kick tolerance: Infinite with 9.5 EMW FIT Planned BOPE test ressure: 250psi low / 3,500 psi hi h Planned com letion fluid: 8.4 seawater / 7.Opp Diesel Planned BOPE test ressure: 250 si low / 3,500 si hi h-14 da test c cle. -~ Planned BOPE function test A requests a variance to the provisions of 20 AAC . 5(e)(10)C regar th c ion pr re test requirement af the use of BOP ram type eq ' t for other than control or eq ' alent purposes, except when e routi use of BOP equip nt may ave compromised their eff tiveness. ( ample would be whe ' e rams are inadvertently sed on a tool join uring routine o tio The activities associ d ith this re uest will not ' e the inte rit ent. Faults The planned trajectory intersects a fault in the intermediate section between ~10,050' - ~10,155' MD which corresponds to ~8,440 -~8,500' TVDss. The production hole will not intersect any mapped fault in the Sag River reservoir section. Fault Details Formation Where Encounter Fault MD Intersect ftTVDSS Est. Throw UncertBint 12-12A_wp08 Intersects Fault 3 iin Kin ak formation ~10050-10155 ~8440- 8500 10ft S +/- 30 ftTVDSS 12-12A Permit to Drill Application Page 5 ~ ~ Although the planned trajectory does not penetrate any mapped faults in the reservoir section, there is a potential for the well to penetrate faults which are below seismic resolution. It is unlikely that the un-imaged faults to fully offset the Sag River formation. Fault Coordinates for Ma in X Y Estimated fault throw, ft Fault 1- Not intersected b well lan 699733 5933473 100 Fault 2- Not intersected b well lan 698065 5934740 50 Fault 3- Intersected by 12-12A_wp07 10050- 696340 5935481 <= 10 10155 ftMD 696128 5935500 <- 10 Fault 4- Not intersected b well lan 696198 5936013 <= 10 Disposal Annular Injection: No annular injection in this well. Cuttings Handling: Cuttings generated from drilling operations are to be hauled to the Grind and Inject station at DS-04. Any metal cuttings should be sent to the North Slope Borough. Fluid Handling: All drilling and completion fluids and other Class II wastes are to be hauled to DS-04 for injection. All Class I wastes are to be hauled to Pad 3 for disposal. Hvdroqen Sulfide #1 Closest SHL Well H2S Level #2 Closest SHL Well H2S Level #1 Closest BHL Well H25 Level #2 Closest BHL Well H2S Level Max. Recorded H2S on Pad/Facility Other Relevant H2S Data (H2S alarms from rigs, etc.) 12-13 10 3/24/2007 12-11 NA 13-02B 50 12/Ol/2006 12-17 50 12/O 1 /2006 DS 12 is a H2S site. Follow H2S SOP on the Pad and nost H2S contin~encv olan in the doghouse. 12-12A Permit to Drill Application Page 6 ~ ~ Pre-riq Operations 1. Replace all live gas lift valves with dummy gas lift valves, and fluid pack as necessary for coil tubing P&A. 2. Pull the tubing tail plug set in the 2-7/8" `XN' nipple in the 9-5/8" X 5-1/2" Baker packer at 9,601' MD. 3. Drift the tubing to confirm and tag top of the fill. Top of fill is expected to be at 10,101' MD. 4. P&A the 12-12 well bore. Lay in ~26 bbls of 15.8 ppg cement, leaving top of cement in the 5-1/2" tubing at ~9,260' MD. Cement volumes may have to be adjusted based on tagged bottom from step 3. 5. Pull gas lift valve number 8 and leave open a pocket. Circulate the annulus to 9.8 ppg brine, cap with 100' of diesel. 6. Jet cut the tubing at 3,800' MD with the appropriate jet cutter. 7. CMIT T x IA to 3,500 psi for 30 minutes. MIT OA to 2,000 psi for 30 minutes. 8. Bleed casing and annulus pressures to zero. 9. Function all tubing and casing lock down screws. Repair and replace as necessary. PPPOT-IC and PPPOT-T 10. Set a BPV. Remove well house and flow line. Level the pad as necessary. Operations Summarv Rig Operations: 1. MI / RU Nabors rig 27E 2. Pull BPV. Circulate out diesel freeze protection and displace the well to seawater. 3. Pressure test CMIT TxIA to 3,500 psi and MIT-OA to 2,000 psi for 30 minutes, each. 4. Set TWC and test from below to 1,000 psi. ~ 5. Nipple down tree. Nipple up and test BOPE to 3,500 psi. Pull TWC. ~~~b 6. R/U. Pull 5~h" tubing from the cut at ~3,800' MD and above. .,c1 7. R/U E-line. M/U 8-1/2" gauge ring / junk basket / casing collar locator (CCL). RIH and tag tubing ~~~ stump at ~3,800' MD. POOH. 8. On E-line, run USIT/CBL from surface to the tubing stump at 3,800' MD. Change USIT settings below the 13-3/8" casing at 2,665' MD to corrosion mode. 9. On E-line, RIH with HES EZSV. Set bridge plug at ~3524', as required to avoid cutting a casing collar while milling the window. POOH. R/D E-line. 10. Pressure-test the 9-5/8" casino to 3.500 nsi for 30 charted minutes. - 11. P/U an IH with 9-5/8" Baker bottom-trip anchor whip stock assembly on 4" DP. Orient whipstock per Sperry Rep, and set on bridge plug. Shear off of the whipstock. 12. Displace the well to 9.0 ppg LSND based milling fluid. Completely displace the well prior to beginning milling operations. 13. Mill window in 9-5/8" casing at ± 3,500' MD, plus approximately 20' beyond middle of window. ~~`' Circulate well bore clean. ~~ 14. Pull up into 9 5/8" casing and conduct an FIT to 12.1 ppg EMW. POOH. ~~ 15. M/U 8'h" GR/RES/PWD/MWD assembly. RIH, kick off and drill the 8'h" intermediate section with 9.0- 9.5 ppg LSND. 16. At approximately 100' above the THRZ, Circulate the well bore clean, and run a wiper trip to window. 17. Run back in to THRZ and weight up the system to 11.5 ppg with spike fluid from the MI plant. 18. Drill ahead to the 7" liner point at top of the Sag River, as per the directional plan. Circulate well clean, short trip to THRZ or higher as needed. POOH. 19. Run the 7", 26#, L-80, BTC-M liner to bottom on drill pipe. Circulate and condition the hole. 20. Cement the entire 7" liner through the 8-1/2" hole and back 150' into the 9-5/8" casing at 3,350' MD. Set the hanger and packer, displace cement with mud. 21. Circulate bottom up, POOH, UD liner running tool (LRT). 22. MU & RIH with 3,350' of 7", 26#, L-80, TCII, liner tieback. 23. Sting in and establish seal, P/U to expose ports. 12-12A Permit to Drill Application Page 7 ~ ~ 24. Cement the tieback to 2,900' MD, bury the seal. The top of the 9-5/8" by 7" annulus will be freeze protected with diesel to the surface. 25. ND BOP at top flange of the existing tubing spool and pick up the stack. 26. Install 7" slips with primary seals. 27. Cut the 7" casing per Cameron Rep, set BOP back. 28. Install Gray emergency pack off. Install tubing spool per Cameron rep. 29. Test casing hanger flange and pack-off seals to 80% of the casing collapse pressure or flange rating (whichever is less). 30. NU and test BOP. 31. Pick up drill pipe and stand back. 32. Test casing and liner to 3,500 psi for 30 minutes. Record the test. 33. MU clean out assembly. 34. RIH to liner float equipment. 35. Drill out tieback float equipment. 36. RIH to drilling liner float equipment, test to 3,500 psi for 30 minutes, and record. Then drill out of cement and float equipment to shoe. 37. Displace to 8.5 flo pro fluid. 38. POOH for directional drilling BHA. 39. M/U the first 6-%e" Dir/GR/Res assembly with an insert bit. 40. RIH, and drill out the 7" shoe plus ~20' new formation, pull up into the shoe and conduct an FIT to 9.5 ppg EMW. 41. 24 degree dog legs will be required below the 7" shoe to minimize the distance the wellbore is out of the target Sag River formation. 42. Once the well is landed in the Sag River, POOH and PU the second 6-1/8" BHA with a PDC bit and DIR/GR/Res/Azimuthal Density, and StrataSteer processing will also be utilized through this section. 43. Drill ahead per the approved directional plan to planned TD. 44. Circulate well bore clean, short trip to shoe, circulate. POOH. 45. Run a 4-1/2", 12.6#, L-80, IBT-M slotted production liner. POOH laying down drill pipe. 46. R/U and run a 4~h", 12.6#, 13Cr, VamTop tubing completion, stinging into the 4-1/2" liner tie back sleeve. 47. Set packer and individually test the tubing and annulus to 3,500 psi for 30 minutes. Record each test. 48. Set a BPV. 49. Nipple down the BOPE. Nipple up the tree and test to 5,000 psi. 50. Freeze protect the well to ~2,200' TVD. Secure the well. 51. Rig down and move off. Post-Riq Operations: 1. MI / RU slick line. Pull the ball and rod / RHC plug from landing nipple below the production packer. Install gas lift valves. 2. Install well house and instrumentation. 12-12A Permit to Drill Application Page 8 ~ ~ Drillinq Hazards and Contingencies POST THIS NOTICE IN THE DOGHOUSE I. Well Control A. The Sag River reservoir in this block is expected to be under-pressured at 7.1 ppg EMW. This pressure is estimated based on offset well pressures. II. Lost Circulation/Breathing A. Follow the LCM decision tree if the losses occur. B. The planned trajectory for this well will intersect a fault in the intermediate hole approximately 315' above the Sag River formation casing point. The production hole does not intersect any mapped faults in the reservoir section, however there is a potential for the well to penetrate faults which are below seismic resolution. Un-imaged faults would be unlikely to fully offset the Sag River formation. I{I. Kick Tolerancellntegrity Testing A. The Kick Tolerance for the intermediate hole section is 155 bbls with 11.5 ppg mud, 12.1 ppg FIT. This FIT should prove up adequate formation strength for expected ECD's. Notify the ODE and Drilling Manger if a 12.1 ppg FIT is not achieved at the window. B. The Kick Tolerance for the production hole section is infinite with 8.5 ppg mud, 9.5 ppg FIT, and an 7.1 ppg pore pressure. This FIT should prove up adequate formation strength for expected ECD's. IV. Integrity Testing ' Test Point Test Depth ' Test ` ` EMV~ ~It~lga~} 9-5/s" wlndoW 20-ft minimum from the 9 5/g" window ~' 12.1 minimum 7" shoe 20-ft minimum from the 7" shoe FTT 9.5 minimum V. Stuck Pipe A. Pipe sticking tendency is possible if the HRZ shale give problems. Back reaming at connections and good hole cleaning practices will contribute to favorable hole conditions. B. Monitor cuttings closely and adjust mud weight accordingly to avoid destabilization. C. We do not expect stuck pipe if the hole is kept adequately clean. VI. Hydrogen Sulfide / A. DS12 is designated as an H2S site, however Standard Operating Procedures for H2S precautions should be followed at all times. H2S levels across the pad are in the 10 PPM range based on the last samples taken in 2005. VII. Anti-Collision Issues A. Major risk criteria fail for four wells. Wells 01-07A and 01-18 will be either minor risked or surveyed with a gyro. Well 01-07 has been plugged back and major risk criteria fails for 12-12 right outside the window. CONSULT THE DS 12 DATA SHEET AND THE WELL PLAN FOR ADDITIONAL INFORMATION 12-12A Permit to Drill Application Page 9 TREE = GRAY GEN 2 yVE1LHEAD = GRAY ACTUATOR= AXElSON KB. E1EV = 71' BF. E1EV = KOP = 3100' Max Angle = 42 @ 10783' Datum MD = 10078' Datum ND = 8800' SS 13-3/8" CSG, 72#, L-80, ID = 12.347" 2664~ Minimum ID = 3.725" @ 10176' XN NIPPLE 2,200` - 4-1/2" X Nipple (3.813" ID) St MD TVD Size 5 3,001 3,000 4-1/2" x 1" 4 5,347 5,000 4-1/2" x 1" 3 6,931 6,250 4-1/2" x 1" 2 8,349 7,400 4-1/2" x 1" 1 9,616 8,500 4-1/2" x 1" 3,500` 9-5/8" X 7" BKR ZXP PKR/HGR 10,116` - 4-1/2" X Nipple (3.813" ID) 10,136` - 7" X 4-1/2" BKR S3 Packer 10,156` - 4-1/2" X Nipple (3.813" ID) 10,176` 4-1/2" XN nipple (3.725" ID) ~ 10,196' - 4-1/2" WLEG 10,346` - 7", 26#, L-80 liner 9-5/8" CSG, 47#, L-80, ID = 8.681" 9933~ PERFORATION SUMMARY REF LOG: BHCS ON 07/20/81 A NGLE AT TOP PERF: 38 @ 9906' Note: Refer to Production DB for historical perf data SIZE SPF INTERVAL Opn/Sqz DATE 2-7/8" 6 9906 - 9926 O 06/15/98 2-7/8" 6 10031 - 10035 O 06/15/98 2-7/8" 6 10038 - 10041 O 06/15/98 3-1/8" 4 10041-10059 O 07/14/86 3-3/8" 4 10041 - 10059 O 12/03/90 3-1/8" 4 10064 - 10077 O 07/14/86 3-3l8" 4 10064 - 10077 O 12/03/90 3-3/8" 4 10084 - 10100 O 12/03/90 3-1/8" 4 10084 - 10162 O 02/13/84 8 10178 - 10218 S 11/15/90 8 10230 - 10250 S 11/15/90 3-3/8" 4 10358 - 10360 S 11/15/90 PsT~ 10837' 7" LNR, 29#, L-80, .0371 bpf, ID = 6.184" 10870~ ~ . , '.a w. . •• , *• . m . ~. . ~ a~ 4-1/2", 12.6#, L-80, Slotted Liner- 12,633` TOP OF 7" LNR 9619' 9651~ 4-1/2" TUBING TAIL 'I 0030~ FISH - PATCH RUBBF~Z & ElEN1ENTS 10821~ FISH- (7) FINGERS F/KIN CALIPER 1/8"X5/16"X1" 10826' FISH - GLV DATE REV BY COMMENTS DATE REV BY COMMQVTS 07/26/81 ORIGINAL COMPLETION 08/14/04 LDKlTLP SEf PACKER 10/26/01 RN/TP CORRECTIONS 03/06/05 KSB/T~H PKR XN NIPPLE CORRECT 02/06/03 ATD/TP DEIETE WANER SAFEfY NOT 04/01/05 MGS/TLH XN PLUG St~ (03/07/05) 10/26/03 CAO/TLP PULL PATCH @ 7926' 11/04/03 SVC/TLP CORRECT SQZ'd PERFS 11/90 ~~~`~,:~;s~~'~r04 GJ~I ~ L!~ G! V GO PRUDHOE BAY UNff W~L: 12-12 PERMff No: ~1810830 API No: 50-029-20610-00 SEC 18, T10N, R15E, 3639.14' FEL & 1237.52' FNL BP Fxploration (Alaska) ~ ~~-12 A SA~ NOTES: PATCH SET ACROSS HOLE IN TBG Proposed Completion °~ 7939'. IA X OA COMMUNICATION TO AL GAS. TR~ _ ~ GRAY G~ 2 WELLHEAD = GRAY ACTUATOR = AX~SON KB. ElEV = 71' BF. E1EV = KOP = 3100' Max Angle = 42 @ 10783' Datum MD = 10078' Datum ND = 8800' SS 13-3/8" CSG, 72#, L-80, ID = 12.347" ~ Minimum ID = 2.25" @ 9601' 2-7/8" XN NIPPLE IN BKR PKR ~ 5-1/2" TBG-PC, 17#, L-80, .0232 bpf, ID = 4.892" ~-~ 9588• TOPOF4-1/2"TBG-PC 9588~ TOP OF 7" LNR 9619~ 4-1 /2" TBG, 12.6#, L-80, .0152 bpf, ID = 3.958" ~ 9651' 9-5l8" CSG, 47#, L-80, ID = 8.681" 9933~ PERFORATION SUMMARY REF LOG: BHCS ON 07/20/81 ANGLE AT TOP PERF: 38 @ 9906' Note: Refer to Production DB for historical perf data SIZE SPF INTERVAL Opn/Sqz DATE 2-7/8" 6 9906 - 9926 O 06/15/98 2-7/8" 6 10031 - 10035 O 06/15/98 2-7/8" 6 10038 - 10041 O 06/15/98 3-1/8" 4 10041 - 10059 O 07/14/86 3-3/8" 4 10041 - 10059 O 12/03/90 3-1/8" 4 10064 - 10077 O 07/14/86 3-3/8" 4 10064 - 10077 O 12/03/90 3-3/8" 4 10084 - 10100 O 12/03/90 3-1/8" 4 10084 - 10162 O 02/13/84 8 10178 - 10218 S 11/15/90 8 10230 - 10250 S 11/15/90 3-3/8" 4 10358 - 10360 S 11/15/90 ~~ -~ 10837, 7" LNR, 29#, L-80, .0371 bpf, ID = 6.184" 10870~ 1~-~~ SA~ NOTES: PATCH SET ACROSS HOLE IN TBG @ 7939'. IA X OA COMMUNICATION TO AL GAS. 2195~ 5-1/2" CAM BAL-O SSSV NIP, ID = 4.56" 5-1/2" CAMCO DSSSV, ID = 3.025" (09/12/02j GAS LIFT MANDRELS ST MD ND DEV TYPE VLV LATCH PORT DATE 1 2896 2896 4 CAMCO DOME RK 0 01/30/04 2 5095 4803 39 CAMCO OPQV RK 0 01/30/04 3 6806 6151 38 CAMCO S!O RK 24 4 7939 7059 35 CAMCA DMY RK 0 5 8636 7645 31 CAMCO DMY RK 0 6 8711 7710 31 CAMCA OPOV RK 0 01/30/04 7 9108 8056 28 CAMCA DMY RK 0 8 9182 8122 29 CA MCA DMY RK 0 9 9412 8323 28 CAMCO DMY RK 0 10 9487 8389 30 CAMCO OPEN RK 0 01/30/04 9{ 558' I-~5-1/2" BOTPBRASSY + 9578~ 9-5/8" X 5-1/2" BOT PKR g588~ 5-1/2" X 4-1/2" XO 9601~ TOP OF 4-1/2" BKR KB BTM PKR (08/14/04) w/2-7/8" XN NIP, ID = 2.25" PLUG SET (03/07/OS) J648~ 4-1/2" CAM DB LANDING NIP, ID = 3.81" 9650~ 4-1/2" BOT BULLNOSE SHEAROUT SUB 9~~ 4-1/2" TUBING TAIL 10030~ I-~ FISH - PATCH RUBBER & EIEJNENTS 10821' I FISH -(7) FINGERS F/KIN CALIPER 1/8"X5/16"X1" 10826~ FISH - GLV DATE REV BY CAMMENTS DATE REV BY COMMENTS 07/26/81 ORIGINAL COM PLETION 08/14/04 LDK/TLP SET PACKER 10/26/01 RN/TP CARRECTIONS 03/06/05 KSB/TLH PKR XN NIPPLE CARRECT 02/06/03 ATD/TP DELETE WANER SAFEfY NOT 04/01/05 MGS/TLH XN PLUG SET (03/07/05) 10/26/03 CAO/TLP PULL PATCH @ 7926' 11l04/03 SVC/TLP CORRECT SQZ'd PERFS 11/90 01/30/04 GJB/TLP GLV GO PRUDHOE BAY UNff WELL: 12-12 PERMff No: ~1810830 API No: 50-029-20610-00 SEC 18, T10N, R15E, 3639.14' FEL & 1237.52' FNL BP Exploration (Alaska) en ~n c F- F- F ~ G < ! - - - S ' ~ ~-' - - - < ~~ c = u v -~zoion~ni~a~a-o -oo ~ r.~n.•;o '^=oa.^.~~na•t~n~ooav,.v'~i~~t~a~n ? ~ o a =:=. >.. 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INN ~~~~_~~~~~~~~~ n ~1' ~f~ v^ JG 'J~ '..J i~ - n ,., 7,n ~ ~ x. .. - - - - - - - - - - ~i ~ rr - n ~ Spe y Su BP Planning Report Company: BP Amoco Date: 3l1/2007 Time: 09:05:54 Page: 1 Field: Prudhoe Bay Co-ordinate(NE) Reference: Well: 12-12, True North Site: PB DS 12 Vertical (TVD) Reference: 18 : 12 7/2/1981 00:00 7 1 A Well; 12-12 Section (VS) Refereace: Weil (O,OON,O.OOE,270.OOAzi) Wellpath: Plan 12-12A Survey Calculation Method: Minimum Curvature Db: Oracle Plan: 12-12A wp08 Date Composed: 2/8/2006 Version: 42 Principal: Yes Tied-to: From: Definitive Path Field: Prudhoe Bay North Slope UNITED STATES Map System: US State Plane Coordinate System 1927 Map Zone: Alaska, Zone 4 Geo Datum: NAD27 (Clarke 1866) Coordinate System: W ell Centre Sys Datum: Mean Sea Level Geomagnetic Model: bggm2006 Site: PB DS 12 TR-10-15 UNITED STATES : North Slope Site Position: Northing: 5932650.90 ft Latitude: 70 13 12.462 N From: Map Easting: 697966.79 ft Longitude: 148 24 9.888 W Position Uncertainty: 0.00 ft North Reference: True Ground Level: 0.00 ft Grid Convergence: 1.50 deg Well: 12-12 Slot Name: 12 12-12 Well Position: +N/-S -1294.56 ft Northing: 5931326.48 ft Latitude: 70 12 59.729 N +E/-W -1158.26 ft Easting : 696842.95 ft Longitude: 148 24 43.518 W Position Uncertainty: 0.00 ft Casing Points MD TVD Diameter Hole Size Name ft ft in in 10364.02 8686.00 7.000 8.500 7" 12633.00 8696.03 4.500 6.125 41/2" Formations MD TVD Formations Lithology Dip Angle Dip Direction ft ft deg deg 4880.76 4643.34 UG4 0.00 0.00 5036.21 4765.14 UG3 0.00 0.00 5989.95 5512.40 UG1 0.00 0.00 6679.61 6052.76 WS2 0.00 0.00 6983.05 6290.51 WS1 0.00 0.00 7320.10 6554.59 CM3 0.00 0.00 7977.98 7070.05 CM2 0.00 0.00 9132.60 7961.39 CM1 0.00 0.00 9493.62 8191.36 THRZ 0.00 0.00 9775.67 8351.64 BHRZ 0.00 0.00 9916.77 8431.82 LCU 0.00 0.00 9916.77 8431.82 TJH 0.00 0.00 9916.77 8431.82 TKNG 0.00 0.00 10049.64 8507.32 TJB 0.00 0.00 10364.02 8686.00 TSGR 0.00 0.00 0.00 TSHA 0.00 0.00 0.00 TSHU 0.00 0.00 0.00 TSHB 0.00 0.00 0.00 TSHC 0.00 0.00 0.00 TSAD 0.00 0.00 0.00 47SB 0.00 0.00 0.00 46S6 0.00 0.00 0.00 45SB 0.00 0.00 0.00 44SB 0.00 0.00 0.00 43SB 0.00 0.00 0.00 42SB 0.00 0.00 0.00 41SB 0.00 0.00 0.00 33SB 0.00 0.00 0.00 TCGL 0.00 0.00 0.00 32S6 0.00 0.00 0.00 HOT 0.00 0.00 0.00 31SB 0.00 0.00 ~ ~ Sperry-Sun BP Planning Report Company: BP Amoco Date: 3!1/2007 'ISme: 09:05:54 Page: 2 Field: Prudhce Bay Co-ordinate(NE) Referencec Well: 12-12, True North Site: PB DS 12 Vertical (1'VD) Reference: 18 : 127/2l1981 00:00 7 1.0 Well: 12-12 Section (VS) Referen ces Well (O.OON,O.OOE,270.OOAzi ) Wellpath: Plan 12-12A Survey Calculahon Method: Minimum Curvature Db: Oracle Formations MD TVD Formations Litholog y Dip Angle Dip Direction ft ft , a~ d~ o.oo owc o.oo o.oo 0.00 BCGL 0.00 0.00 0.00 23S6 0.00 0.00 0.00 22TS 0.00 0.00 0.00 21TS 0.00 0.00 0.00 TZ1 B 0.00 0.00 0.00 TDF 0.00 0.00 0.00 BSAD 0.00 0.00 Targets Map Map <--- Latitude -a <- Longitude -> Name DescripNon TVD +N/-S +E/-W Northing Easting Deg Mio Sec Deg Min Sec Dip. Dir. ft ft ft ft ft 12-12A TSag 8686.00 4124.85 -1368.94 5935414.00 695367.00 70 13 40.296 N 148 25 23.286 W 12-12A T4 8696.00 4709.39 -3413.50 5935945.00 693308.00 70 13 46.038 N 148 26 22.691 W 12-12A T3 8698.00 4694.26 -2986.73 5935949.00 693735.00 70 13 45.891 N 148 26 10.291 W 12-12A T2 rev 8702.00 4650.00 -2513.58 5935909.09 694209.12 70 13 45.458 N 148 25 56.544 W 12-12A Poly2 8703.52 4656.35 -3451.20 5935891.00 693271.70 70 13 45.517 N 148 26 23.785 W -Polygon 1 8703.52 5445.12 -3506.96 5936678.00 693195.40 70 13 53.274 N 148 26 25.416 W -Polygon 2 8703.52 4227.69 -3547.52 5935460.00 693186.60 70 13 41.300 N 148 26 26.578 W -Polygon 3 8703.52 4165.56 -2852.96 5935416.00 693882.50 70 13 40.692 N 148 26 6.399 W -Polygon 4 8703.52 4298.94 -2597.08 5935556.00 694134.80 70 13 42.005 N 148 25 58.967 W -Polygon 5 8703.52 4256.14 -2337.10 5935520.00 694395.80 70 13 41.585 N 148 25 51.414 W -Polygon 6 8703.52 4064.44 -1967.95 5935338.00 694769.80 70 13 39.700 N 148 25 40.688 W -Polygon 7 8703.52 3968.32 -1274.38 5935260.00 695465.60 70 13 38.756 N 148 25 20.539 W -Polygon 8 8703.52 4107.88 -948.71 5935408.00 695787.50 70 13 40.130 N 148 25 11.078 W -Polygon 9 8703.52 4094.35 -775.10 5935399.00 695961.40 70 13 39.997 N 148 25 6.035 W -Polygon 10 8703.52 4221.46 -623.82 5935530.00 696109.30 70 13 41.247 N 148 25 1.640 W -Polygon 11 8703.52 4188.11 -381.00 5935503.00 696352.90 70 13 40.919 N 148 24 54.586 W -Polygon 12 8703.52 3709.77 276.59 5935042.00 697022.70 70 13 36.215 N 148 24 35.483 W -Polygon 13 8703.52 3353.33 1285.40 5934712.00 698040.40 70 13 32.708 N 148 24 6.179 W -Polygon 14 8703.52 4083.27 1643.77 5935451.00 698379.60 70 13 39.886 N 148 23 55.765 W -Polygon 15 8703.52 4604.10 47.52 5935930.00 696770.40 70 13 45.010 N 148 24 42.137 W -Polygon 16 8703.52 4679.06 -524.85 5935990.00 696196.30 70 13 45.747 N 148 24 58.766 W -Polygon 17 8703.52 4604.25 -648.55 5935912.00 696074.60 70 13 45.012 N 148 25 2.360 W -Polygon 18 8703.52 4489.55 -930.05 5935790.00 69579620 70 13 43.883 N 148 25 10.538 W -Polygon 19 8703.52 4438.64 -1279.52 5935730.00 695448.20 70 13 43.382 N 148 25 20.690 W -Polygon 20 8703.52 4741.57 -1924.18 5936016.00 694795.90 70 13 46.360 N 148 25 39.421 W -Polygon 29 8703.52 4970.00 -2013.95 5936242.00 694700.20 70 13 48.606 N 148 25 42.031 W -Polygon 22 8703.52 5140.49 -2183.58 5936408.00 694526.20 70 13 50.283 N 148 25 46.961 W -Polygon 23 8703.52 5399.84 -2768.45 5936652.00 693934.80 70 13 52.832 N 148 26 3.957 W -Polygon 24 8703.52 5480.32 -2862.08 5936730.00 693839.10 70 13 53.623 N 148 26 6.679 W -Polygon 25 8703.52 5445.12 -3506.96 5936678.00 693195.40 70 13 53.274 N 148 26 25.416 W 12-12A T1 rev 8704.00 4430.00 -1790.00 5935708.05 694938.15 70 13 43.296 N 148 25 35.521 W Plan SecHon Information MD Incl Azim TVD +N/-S +E/-W DLS Build Turn TFO Target ft deg deg ft ft ft deg/100k deg/100ft deg/100ft deg 3500.00 18.50 293.95 3484.79 46.17 -103.31 0.00 0. 00 0.00 0.00 3520.00 19.22 301.04 3503.71 49.16 -109.03 12.00 3. 59 35.45 76.00 4255.45 38.42 351.14 4153.41 343.84 -251.08 4.00 2. 61 6.81 76.04 8786.86 38.42 351.14 7703.82 3125.93 -684.92 0.00 0. 00 0.00 0.00 9480.34 55.00 320.00 8183.78 3565.00 -905.00 4.00 2. 39 -4.49 -65.51 9492.16 55.37 320.36 8190.53 3572.46 -911.22 4.00 3. 14 3.02 38.36 10352.19 55.37 320.36 8679.25 4117.39 -1362.72 0.00 0. 00 0.00 0.00 10364.02 55.00 320.00 8686.00 4124.85 -1368.94 4.00 -3. 14 -3.02 -141.85 12-12A TSag ' ~ ~ Sperry-Sun BP Planning Report Company: BP Amoco Date: 3/1/200T Timec 09:05:54 Page: 3 Field: Prudhoe Bay Co-ordinate(NE) Reference: W ell: 12-12, True North Site: PB DS 12 Verticai (TVD) Reference: 18 : 12 7/2/1981 00:00 71 A We1L• 12-12 Section (VS) Reference: W ell (O.OON,O.OOE,270.OOAzi) Weilpath: Plan 12-12A Survey Calculahon Method: Minimum Curvature Db: Oracle Plan Section Information MD ft Incl deg Azim deg TVD ft +N/-S ft +E!-W ft DLS Build deg/100ft deg/100ft Turn deg/100ft TFO Target deg 10384.02 55.00 320. 00 8697.47 4137.40 -1379.47 0.00 0.00 0.00 0.00 10574.43 100.70 320. 29 8736.50 4276.56 -1495.59 24.00 24.00 0.15 0.39 10695.82 100.70 320. 29 8713.96 4368.32 -1571.81 0.00 0.00 0.00 0.00 10802.84 90.00 320. 00 8704.00 4450.00 -9640.00 10.00 -10.00 -0.27 -178.45 11252.83 90.17 275. 00 8703.31 4652.48 -2028.96 10.00 0.04 -10.00 -89.76 11664.02 90.17 275. 00 8702.11 4688.33 -2438.58 0.00 0.00 0.00 0.00 11739.16 90.00 272. 00 8702.00 4692.92 -2513.58 4.00 -0.22 -3.99 -93.18 11789.34 90.51 270. 06 8701.78 4693.82 -2563.75 4.00 1.02 -3.87 -75.18 12206.08 90.51 270. 06 8698.04 4694.25 -2980.47 0.00 0.00 0.00 0.00 12212.34 90.27 270. 00 8698.00 4694.26 -2986.73 4.00 -3.89 -0.95 -166.24 12-12A T3 12266.56 90.27 2~2. 17 8697.75 4695.28 -3040.93 4.00 0.00 4.00 90.04 12639.40 90.27 272. 17 8696.00 4709.39 -3413.50 0.00 0.00 0.00 0.00 12-12A T4 Survey MD Incl Azim TVD Sys TVD VS N/S E/W DLS MapN MapE TooUCo, ft deg deg ft ft ft ft ft deg/100ft ft ft 3500.00 18.50 293.95 3484.79 3413.79 103.3'1 46.17 -103.31 0.00 5931369.94 696738.48 Start Dir 1: 3520.00 19.22 301.04 3503.71 3432.71 109.03 49.16 -109.03 12.00 5931372.77 696732.68 Start Dir 4/ 3600.00 20.22 310.06 3579.04 3508.04 130.90 64.85 -130.90 4.00 5931387.89 696710.42 MWD+IFR 3700.00 22.05 319.95 3672.34 3601.34 156.21 90.35 -156.21 4.00 5931412.72 696684.45 MWD+IFR 3800.00 24.37 328.22 3764.26 3693.26 179.17 122.27 -179.17 4.00 5931444.03 696660.67 MWD+IFR 3900.00 27.07 335.03 3854.37 3783.37 199.65 160.45 -199.65 4.00 5931481.66 696639.20 MWD+IFR 4000.00 30.04 340.64 3942.20 3871.20 217.56 204.72 -217.56 4.00 5931525.44 696620.14 MWD+IFR 4100.00 33.21 345.30 4027.35 3956.35 232.81 254.85 -232.81 4.00 5931575.16 696603.59 MWD+IFR 4200.00 36.53 349.22 4109.40 4038.40 245.33 310.60 -245.33 4.00 5931630.56 696589.62 MWD+IFR 4255.45 38.42 351.14 4153.41 4082.41 251.08 343.84 -251.08 4.00 5931663.64 696583.01 End Dir : 4 4300.00 38.42 351.14 4188.31 4117.31 255.34 371.19 -255.34 0.00 5931690.86 696578.03 MWD+IFR 4400.00 38.42 351.14 4266.66 4195.66 264.91 432.59 -264.91 0.00 5931751.99 696566.86 MWD+IFR 4500.00 38.42 351.14 4345.01 4274.01 274.49 493.98 -274.49 0.00 5931813.11 696555.69 MWD+IFR 4600.00 38.42 351.14 4423.36 4352.36 284.06 555.38 -284.06 0.00 593187423 696544.52 MWD+IFR 4700.00 38.42 351.14 4501.71 4430.71 293.64 616.77 -293.64 0.00 5931935.35 696533.35 MWD+IFR 4800.00 38.42 351.14 4580.06 4509.06 303.21 678.17 -303.21 0.00 5931996.47 696522.18 MWD+IFR 4880.76 38.42 351.14 4643.34 4572.34 310.94 727.75 -310.94 0.00 5932045.84 696513.16 UG4 4900.00 38.42 351.14 4658.41 4587.41 312.78 739.56 -312.78 0.00 5932057.60 696511.01 MWD+IFR 5000.00 38.42 351.14 4736.77 4665.77 322.36 800.96 -322.36 0.00 5932118.72 696499.84 MWD+IFR 5036.21 38.42 351.14 4765.14 4694.14 325.83 823.19 -325.83 0.00 5932140.85 696495.79 UG3 5100.00 38.42 351.14 4815.12 4744.12 331.93 862.36 -331.93 0.00 5932179.84 696488.66 MWD+IFR 5200.00 38.42 351.14 4893.47 4822.47 341.51 923.75 -341.51 0.00 5932240.96 696477.49 MWD+IFR 5300.00 38,42 351.14 4971.82 4900.82 351.08 985.15 -351.08 0.00 5932302.08 696466.32 MWD+IFR 5400.00 38,42 351.14 5050.17 4979.17 360.66 1046.54 -360.66 0.00 5932363.20 696455.15 MWD+IFR 5500.00 38.42 351.14 5128.52 5057.52 370.23 1107.94 -370.23 0.00 5932424.33 696443.98 MWD+IFR 5600.00 38.42 351.14 5206.87 5135.87 379.80 1169.33 -379.80 0.00 5932485.45 696432.81 MWD+IFR 5700.00 38.42 351.14 5285.22 5214.22 389.38 1230.73 -389.38 0.00 5932546.57 696421.64 MWD+IFR 5800.00 38.42 351.14 5363.58 5292.58 398.95 1292.13 -398.95 0.00 5932607.69 696410.47 MWD+IFR 5900.00 38.42 351.14 5441.93 5370.93 408.53 1353.52 -408.53 0.00 5932668.81 696399.30 MWD+IFR 5989.95 38.42 351.14 5512.40 5441.40 417.14 1408.74 -417.14 0.00 5932723.79 696389.25 UG1 6000.00 38.42 351.14 5520.28 5449.28 418.10 1414.92 -418.10 0.00 5932729.93 696388.12 MWD+IFR 6100.00 38.42 351.14 5598.63 5527.63 427.67 1476.31 -427.67 0.00 5932791.06 696376.95 MWD+IFR 6200.00 38.42 351.14 5676.98 5605.98 437.25 1537.71 -437.25 0.00 5932852.18 696365.78 MWD+IFR 6300.00 38.42 351.14 5755.33 5684.33 446.82 1599.10 -446.82 0.00 5932913.30 696354.61 MWD+IFR 6400.00 38.42 351.14 5833.68 5762.68 456.40 1660.50 -456.40 0.00 5932974.42 696343.44 MWD+IFR 6500.00 38.42 351.14 5912.03 5841.03 465.97 1721.90 -465.97 0.00 5933035.54 696332.27 MWD+IFR 6600.00 38.42 351.14 5990.38 5919.38 475.54 1783.29 -475.54 0.00 5933096.66 696321.10 MWD+IFR 6679.61 38.42 351.14 6052.76 5981.76 483.17 1832.17 -483.17 0.00 5933145.32 696312.20 WS2 6700.00 38.42 351.14 6068.74 5997.74 485.12 1844.69 -485.12 0.00 5933157.79 696309.93 MWD+IFR S S ~ ~ Sperry-Sun BP Planning Report Company: BP Amoco Date: 3/1/2007 Time: 09:05:54 Page: 4 Field: Prudhoe Bay Co-ordinate(NE) Referenc e: W ell: 12-12, True North Site: PB DS 12 Vertical (TVD) Reference: 18 : 127/2/1981 00:00 71 A Well: 12- 12 Sectioo (VS) Reference: W ell (O.OON,O.OOE,270.OOAzi) Wellpath: Plan 12-12A Survey Calculatfon Method: Minimurn Curvature Db: Oracle Survey MD Inci Azim TVD Sys T~'D VS N/S E!W DLS MapN MapE TooUCo ft deg deg ft ft ft ft ft deg/100ft ft ft 6800.00 38.42 351.14 6147.09 6076.09 494.69 1906.08 -494.69 0.00 5933218.91 696298.75 MWD+IFR 6900.00 38.42 351.14 6225.44 6154.44 50427 1967.48 -504.27 0.00 5933280.03 696287.58 MWD+IFR 6983.05 38.42 351.14 6290.51 6219.51 51222 2018.47 -51222 0.00 5933330.79 696278.31 WS1 7000.00 38.42 351.14 6303.79 6232.79 513.84 2028.87 -513.84 0.00 5933341.15 696276.41 MWD+IFR 7100.00 38.42 351.14 6382.14 6311.14 523.41 2090.27 -523.41 0.00 5933402.27 696265.24 MWD+IFR 7200.00 38.42 351.14 6460.49 6389.49 532.99 2151.66 -532.99 0.00 5933463.39 696254.07 MWD+IFR 7300.00 38.42 351.14 6538.84 6467.84 542.56 2213.06 -542.56 0.00 5933524.52 696242.90 MWD+IFR 7320.10 38.42 351.14 6554.59 6483.59 544.49 2225.40 -544.49 0.00 5933536.80 696240.65 CM3 7400.00 38.42 351.14 6617.19 6546.19 552.14 2274.46 -552.14 0.00 5933585.64 696231.73 MWD+IFR 7500.00 38.42 351.14 6695.55 6624.55 561.71 2335.85 -561.71 0.00 5933646.76 696220.56 MWD+IFR 7600.00 38.42 351.14 6773.90 6702.90 571.29 2397.25 -571.29 0.00 5933707.88 696209.38 MWD+IFR 7700.00 38.42 351.14 6852.25 6781.25 580.86 2458.64 -580.86 0.00 5933769.00 696198.21 MWD+IFR 7800.00 38.42 351.14 6930.60 6859.60 590.43 2520.04 -590.43 0.00 5933830.12 696187.04 MWD+~FR 7900.00 38.42 351.14 7008.95 6937.95 600.01 2581.43 -600.01 0.00 5933891.25 696175.87 MWD+IFR 7977.98 38.42 351.14 7070.05 6999.05 607.47 2629.31 -607.47 0.00 5933938.91 696167.16 CM2 8000.00 38.42 351.14 7087.30 7016.30 609.58 2642.83 -609.58 0.00 5933952.37 696164.70 MWD+IFR 8100.00 38.42 351.14 7165.65 7094.65 619.16 2704.23 -619.16 0.00 5934013.49 696153.53 MWD+IFR 8200.00 38.42 351.14 7244.00 7173.00 628.73 2765.62 -628.73 0.00 5934074.61 696142.36 MWD+IFR 8300.00 38.42 351.14 7322.36 7251.36 638.30 2827.02 -638.30 0.00 5934135.73 696131.19 MWD+IFR 8400.00 38.42 351.14 7400.71 7329.71 647.88 2888.41 -647.88 0.00 5934196.85 696120.01 MWD+IFR 8500.00 38.42 351.14 7479.06 7408.06 657.45 2949.81 -657.45 0.00 5934257.98 696108.84 MWD+IFR 8600.00 38.42 351.14 7557.41 7486.41 667.03 3011.20 -667.03 0.00 5934319.10 696097.67 MWD+IFR 8700.00 38.42 351.14 7635.76 7564.76 676.60 3072.60 -676.60 0.00 5934380.22 696086.50 MWD+IFR 8786.86 38.42 351.14 7703.82 7632.82 684.92 3125.93 -684.92 0.00 5934433.31 696076.80 Start Dir 4/ 8800.00 38.64 350.37 7714.10 7643.10 686.23 3134.01 -686.23 4.00 5934441.35 696075.27 MWD+IFR 8900.00 40.47 344.79 7791.22 7720.22 699.98 3196.13 -699.98 4.00 5934503.09 696059.91 MWD+IFR 9000.00 42.55 339.63 7866.12 7795.12 720.27 3259.16 -720.27 4.00 5934565.57 696037.98 MWD+IFR 9100.00 44.85 334.88 7938.43 7867.43 747.02 3322.82 -747.02 4.00 5934628.50 696009.59 MWD+IFR 9132.60 45.64 333.42 7961.39 7890.39 757.11 3343.65 -757.11 4.00 5934649.06 695998.95 CM1 9200.00 47.32 330.52 8007.81 7936.81 780.09 3386.77 -780.09 4.00 5934691.57 695974.86 MWD+IFR 9300.00 49.95 326.50 8073.90 8002.90 819.32 3450.71 -819.32 4.00 5934754.46 695933.98 MWD+IFR 9400.00 52.71 322.79 8136.39 8065.39 864.51 3514.33 -864.51 4.00 5934816.88 695887.14 MWD+IFR 9480.34 55.00 320.00 8183.78 8112.78 905.00 3565.00 -905.00 4.00 5934866.47 695845.35 MWD+IFR 9492.16 55.37 320.36 8190.53 8119.53 911.22 3572.46 -911.22 4.00 5934873.76 695838.94 End Dir : 9493.62 55.37 320.36 8191.36 8120.36 911.98 3573.38 -911.98 0.00 5934874.66 695838.15 THRZ 9500.00 55.37 320.36 8194.99 8123.99 915.33 3577.42 -915.33 0.00 5934878.62 695834.70 MWD+IFR 9600.00 55.37 320.36 8251.81 8180.81 967.83 3640.79 -967.83 0.00 5934940.59 695780.57 MWD+IFR 9700.00 55.37 320.36 8308.64 8237.64 1020.33 3704.15 -1020.33 0.00 5935002.56 695726.44 MWD+IFR 9775.67 55.37 320.36 8351.64 8280.64 1060.06 3752.10 -1060.06 0.00 5935049.45 695685.48 BHRZ 9800.00 55.37 320.36 8365.46 8294.46 1072.83 3767.51 -1072.83 0.00 5935064.52 695672.31 MWD+IFR 9900.00 55.37 320.36 8422.29 8351.29 1125.33 3830.87 -1125.33 0.00 5935126.49 695618.18 MWD+~FR 9916.77 55.37 320.36 8431.82 8360.82 1134.13 3841.50 -1134.13 0.00 5935136.89 695609.10 TKNG 10000.00 55.37 320.36 8479.11 8408.11 1177.83 3894.23 -1177.83 0.00 5935188.46 695564.05 MWD+IFR 10049.64 55.37 320.36 8507.32 8436.32 1203.88 3925.68 -1203.88 0.00 5935219.22 695537.18 TJB 10100.00 55.37 320.36 8535.94 8464.94 1230.32 3957.60 -1230.32 0.00 5935250.43 695509.92 MWD+IFR 10200.00 55.37 320.36 8592.77 8521.77 1282.82 4020.96 -1282.82 0.00 5935312.40 695455.79 MWD+IFR 10300.00 55.37 320.36 8649.59 8578.59 1335.32 4084.32 -1335.32 0.00 5935374.36 695401.66 MWD+IFR 10352.19 55.37 320.36 8679.25 8608.25 1362.72 4117.39 -1362.72 0.00 5935406.71 695373.41 Start Dir 4/ 10364.02 55.00 320.00 8686.00 8615.00 1368.94 4124.85 -1368.94 4.00 5935414.00 695367.00 12-12A TS 10384.02 55.00 320.00 8697.47 8626.47 1379.47 4137.40 -1379.47 0.00 5935426.27 695356.15 Start Dir 2 10392.11 56.94 320.02 8702.00 8631.00 1383.78 4142.54 -1383.78 24.00 5935431.29 695351.70 12-12A T2 10394.92 57.62 320.02 8703.52 8632.52 1385.30 4144.35 -1385.30 24.00 5935433.06 695350.14 12-12A Po! ent S S S S S S S S S S S S S S S S S S S S 0 S S S S S S S S 2 S S S S S S S S S 0 ~ - n ~ Sperry Su BP Planning Report Company: BP Amoco Date: 3!1/2007 Time: 09:05:54 Page: 5 Field: Prudhoe Bay Co-ordinate(NE) Reference: W ell: 12-12, True North Site: PB DS 12 Vertical (TVD) Reference: 18 : 12 7/2/1981 00:00 71 A Well: 12- 12 Section (VS) Reference: Well (O.OON,O.OOE,270.OOAzi) Wellpath: Pian 12-12A Survey Calculation Method: Minimum Curvature Db: Oracie Survey MD Incl Azim TVD Sys TVD VS N/S E/W DLS MapN MapE TooUCo ft deg deg ft ft ft ft ft deg/100ft ft ft 10395.82 57.83 320.02 8704.~0 8633.00 1385.79 4144.93 -1385.79 24.00 5935433.63 695349.63 12-12A T1 10400.00 58.84 320.03 8706.19 8635.19 1388.07 4147.66 -1388.07 24.00 5935436.30 695347.28 MWD+IFR 10500.00 82.84 320.19 8738.78 8667.78 1448.20 4219.61 -1448.20 24.00 5935506.65 695285.29 MWD+IFR 10574.43 100.70 320.29 8736.50 8665.50 1495.59 4276.56 -1495.59 24.00 5935562.35 695236.44 End Dir : 1 10600.00 100.70 320.29 8731.75 8660.75 1511.65 4295.89 -1511.65 0.00 5935581.25 695219.88 MWD+IFR 10695.82 100.70 320.29 8713.96 8642.96 1571.81 4368.32 -1571.81 0.00 5935652.09 695157.86 Start Dir 1 10700.00 100.28 320.28 8713.20 864220 1574.44 4371.48 -1574.44 10.00 5935655.18 695155.15 MWD+IFR 10800.00 90.28 320.01 8704.01 8633.01 1638.17 4447.82 -1638.17 10.00 5935729.82 695089.45 MWD+IFR 10802.84 90.00 320.00 8704.00 8633.00 1640.00 4450.00 -1640.00 10.00 5935731.95 695087.57 MWD+IFR 10900.00 90.04 310.28 8703.97 8632.97 1708.45 4518.79 -1708.45 10.00 5935798.93 695017.35 MWD+IFR 11000.00 90.08 300.28 8703.86 8632.86 1789.97 4576.48 -1789.97 10.00 5935854.47 694934.35 MWD+IFR 11100.00 90.12 290.28 8703.69 8632.69 1880.28 4619.13 -1880.28 10.00 5935894.75 694842.97 MWD+IFR 11200.00 90.15 280.28 8703.45 8632.45 1976.62 4645.46 -1976.62 10.00 5935918.56 694745.98 MWD+IFR 11252.83 90.17 275.00 8703.31 8632.31 2028.96 4652.48 -2028.96 10.00 5935924.22 694693.48 End Dir : 1 1 11300.00 90.17 275.00 8703.17 8632.17 2075.95 4656.60 -2075.95 0.00 5935927.10 694646.40 MWD+IFR 11400.00 90.17 275.00 8702.88 8631.88 2175.57 4665.31 -2175.57 0.00 5935933.22 694546.59 MWD+IFR 11500.00 90.17 275.00 8702.59 8631.59 2275.19 4674.03 -2275.19 0.00 5935939.33 694446.79 MWD+IFR 11600.00 90.17 275.00 8702.30 8631.30 2374.81 4682.75 -2374.81 0.00 5935945.45 694346.98 MWD+IFR 11664.02 90.17 275.00 8702.11 8631.11 2438.58 4688.33 -2438.58 0.00 5935949.37 694283.09 Start Dir 4/ 11700.00 90.09 273.56 8702.03 8631.03 2474.46 4691.02 -2474.46 4.00 5935951.12 694247.15 MWD+IFR 11739.16 90.00 272.00 8702.00 8631.00 2513.58 4692.92 -2513.58 4.00 5935952.00 694208.00 MWD+IFR 11789.34 90.51 270.06 8701.78 8630.78 2563.75 4693.82 -2563.75 4.00 5935951.59 694157.83 End Dir : 1 1 11800.00 90.51 270.06 8701.68 8630.68 2574.40 4693.83 -2574.40 0.00 5935951.32 694147.18 MWD+IFR 11900.00 90.51 270.06 8700.78 8629.78 2674.40 4693.94 -2674.40 0.00 5935948.82 694047.22 MWD+IFR 12000.00 90.51 270.06 8699.89 8628.89 2774.40 4694.04 -2774.40 0.00 5935946.32 693947.26 MWD+IFR 12100.00 90.51 270.06 8698.99 8627.99 2874.39 4694.14 -2874.39 0.00 5935943.81 693847.30 MWD+IFR 12200.00 90.51 270.06 8698.10 8627.10 2974.39 4694.25 -2974.39 0.00 5935941.31 693747.34 MWD+IFR 12206.08 90.51 270.06 8698.04 8627.04 2980.47 4694.25 -2980.47 0.00 5935941.16 693741.26 Start Dir 4/ 12212.34 90.27 270.00 8698.00 8627.00 2986.73 4694.26 -2986.73 4.00 5935941.00 693735.00 12-12A T3 12266.56 90.27 272.17 8697.75 8626.75 3040.93 4695.28 -3040.93 4.00 5935940.61 693680.79 End Dir : 1 12300.00 90.27 272.17 8697.59 8626.59 3074.35 4696.55 -3074.35 0.00 5935941.00 693647.36 MWD+IFR 12400.00 90.27 272.17 8697.12 8626.12 3174.28 4700.33 -3174.28 0.00 5935942.18 693547.37 MWD+IFR 12500.00 90.27 272.17 8696.65 8625.65 3274.20 4704.12 -3274.20 0.00 5935943.36 693447.38 MWD+IFR 12600.00 90.27 272.17 8696.18 8625.15 3374.13 4707.90 -3374.13 0.00 5935g44.53 693347.40 MWD+IFR 12633.00 90.27 272.17 8696.03 8625.03 3407.11 4709.15 -3407.11 0.00 5935944.92 693314.40 4 1/2" 12639.00 90.27 272.17 8696.00 8625.00 3413.10 4709.38 -3413.10 0.00 5935944.99 693308.40 Total Dept : 12639.40 90.27 272.17 8696.00 8625.00 3413.50 4709.39 -3413.50 0.00 5935945.00 693308.00 12-12A T4 nent File Type: A~~ _; File Number: ~ z8329 __;'; ~ Printable Case Fi{e_Summary See Township, Range, Section and Acreage? ,~ ~ ~~ ~` Yes ~ No ~~~ „~ ~ ~ Q~ C,r'~:~~ til~l°~' Last updated on 04/06/2007. http://www.dnr. state.ak.us/las/Case_Summary.cfm?FileType-ADL&FileNumber=28329&... 4/6/2007 ~ , Allaunder, Thomas E (DOA) From: Nadem, Mehrdad [NademM@BP.com] Sent: Wednesday, March 28, 2007 3:09 PM To: Thomas Maunder Subject: DS 12-12 ~ ~~~ - ~t'"a~ Tom, Page 1 of 2 Thanks again for the discussing 12-12 with me. As discussed, 12-12 was completed with 9.6# brine and diesel as freeze protect. We will circulate the crude out in IA and displace to seawater or 9.0# brine before setting the CIBC for supporting the whipstock. Thanks, Mehrdad Nadem Operations Drilling Engineer Phane: 907/564-5941 Cel I: 907/440-0213 Email: nademm@bp.com From: Thomas Maunder [maiito:tom_maunder@admin.state.ak.us] Sent: Wednesday, March 28, 2007 10:46 AM To: Nadem, Mehrdad Subject: Re: DS 12-12 Mehrdad, I am finishing my review of the sundry. Thanks far your response. One comment With regard to the fluid in the IA below the cut. The fluid left in abandoned portions of wells must exceed the hydrostatic of formations between piugs. See 20 AAC 25.112 (~. Crude should not be left below the planned depth of your tubing cut. Call or message with any questions. Tom Maunder, PE AOGCC Nadem, Mehrdad wrote, On 3/27/2007 1:29 PM: Tom, This Email is a follow up to our discussions earlier today regarding Sundry Application for 12-12. Below, please find my response to your questions. Thank you for your comments. I look forward to continue working with you, and very much appreciate you time. Mehrdad Nadem Operations Drilfing Engineer Phone: 907/564-5941 7/6f2007 ~ Page 2 of 2 ~ Cell: 907/440-0213 Email; nadem_mC~bp.com 1. In Step 3, you indicate that a"top of cement" might be tagged at 10100', however that does not agree with the drawing you have provrded showing the existing weii. Would you please confirm the depth? You note that the cement volume might need to be adjusEed (step 4}. It appears that considerable amount of fill has settled in the 7" casing since the well was drilted. It is also conceivable that the fill contains some cement left behind during the coil tubing squeeze operations. The top of fill could be as high as 10,089'. To confirm the top of the fill, 1 have requested tagging the TD before laying cement for the plug and abandon operation. The schematic that I attached to the Sundry Application shows the PBTD when the well was initially completed. 2. In Step 6 you plan to pertorm a CMIT T x IA and an MIT OA. Is it expected that these tests wiil pass to fluid? Do any tests from Problem Wells show a leak lass rate? Similar tests are proposed after the rig arrives. MIT-OA has passed a number of times, the last test was performed on March 12, 2007. CMIT- TxIA passed to 2,000 psi on April 24, 2004. The reason for duplicating the MIT-OA and CMIT TxIA is to comply with BP's Barrier Policy. 3. Has the IA been reeently circulated between the packer and where you plan to cut? It is proper to have fluid with known properties in this space. On August 15, 2004 415 barrels of crude was pumped down the IA. 4. Step 24 of rig procedure tests the 9-5/8" and 13-3/8" casing. I presume that if earlier tests have failed badly that the 7" tieback scenario will come into play. ~n either case, t believe the upper portion of the 9-5/8" casing will be replaced. Although an outer annulus re-pressurization test (OART) passed on April 17, 2005. The Pad Engineer suspects that there is a preferential leak to gas most likely through the buttress threads of the 9-5/8" casing. We would like to cut and pull the 9-5/8" casing above the 13-3/8" surface casing shoe based on USIT results. We could run a 7" tieback independent of the 9-5/8" casing, and could change the well head without cutting and pulling the 9-5/8" casing, although this is not a preferred option. We will make all efforts to replace the 9-5/8' casing with a new string of 9-5/8", 47#, L-80 with TC-II connections. We plan to cement the 9-5/8" x 13-3/8" annulus to surface. 5. Step 28, I believe you will need to set slips prior to cutting off. Yes. In fact I had ordered the slips over a week ago. Per your comment, I will include a line noting setting of the slips. I am meeting with Cameron reps on Thursday to develop a detailed program for changing the wellheads for inclusion in the Drilling and Completion Program. 7/6/2007 ~ Terri L. Hubbie BP Exploration AK inc. PO Box 196612 MB 7-5 Anchorage, AK 99519 PAY TO THE ORDER OF "Mastercard Check" \J 89-8/1252 329 OATE _ ~~ ~ C~CJ . ~ ~:L25200060~:99L46227i556~~' 0329 First National Bank Alaska Anchorage, AK 99501 ~ . ~ MEMO I ~ -J TRAYSMIT"1C"AL LE'I'TER CH~CKLIST WELL N~+1NIE ~,d'~ /o?-/~?,<,! PTD# _ ~~C`~~ - O~~ ~, Development Service Exptoratory Stratigraphic Test Yon-Coaventio~eat Welt Circ[e 4ppropriate Letter / paragraphs to b~ Included ia Transmitta! Letter ! CE~CK i ADD-ONS ~ wHAr ~ (OPTI0IVS) ; APPLIES l TEXT FOR APPROVAL LETTER ; I NRiLTI LATERAL ~ The permit i~ for a new we{Ibore segment of existing ! ! ~ well ' ; ~(If last two digits ~n I permit Yo. , AP[ No. ~0- ~ ~ AP[ rtumber are ; '--____~, , ; between 60-69) Production ~hould continue to be reported as a function of the' ~ ~ origina! 4Pt number stated above. ~ ~ PILOT f~fOLE ~[n accordance with 20 AAC 25.00> > ~ ~ (~, atI records, da.ta and to~s , i j ; acquired for the pilot hoie must be cleazly dii~erentiated in bothi ; ~ ; wetl name ( PF~ and API number I i ; '(50- - -_) from records, data and logs ~ I ~ ~ acquired for we(1 i ~ i ; i SPACING ~ ' EXCEPTION ! i i i ~ ~ The permit is approved subject to futl compliance with 20 AAC ~ 2~.055. Approvat to perforate and t~roduce / iaject is contingent I upon issuance of a conservarioa ocder approving a spacing l exception. assum~s the ~[iabi(ity of any protest to the spacing exception that may occur. ~ ' ~ DRY DCI'CH ~ ~ AII dry ditch samp(e sets submitted to the-Eommission must be in ; ~ i SA!~IPGE i no greater ttran 30' sa:mple int.ervals from below• the permafrost or ; ~ ~ ' I from where samp[es are first caught and 10' sample intervals ; ~ ; i ~ through target zones. ; ~ ~ ~ i i~oii Conventionat j Please note the fotlowing. specia! condition oF thes permic: ~ i production or production testing of coal bed methane is not allow~d i ; i ~ for (czarr~e of weIl~ until after (Cocnnanv Name) has designed and ~ ~ ~ implemented a water well testing program to provide baseline data i ~ ~ ; on water quality and quatttity. (Compa~. ame) must cantact the ' ~ Commission to obtain advance approval of such water we!! testing ; ~ I_ ~ Pcoqrant I Rev: I'2~i06 C:`jody~transmictal checklist Field & Pool PRUDHOE BAY, PRUDHOE OIL - 640150 Well Name: PRUDHOE BAY UNIT 12-12A Program DEV Well bore seg I~ PTD#:2070490 Company BP EXPLORATION (ALASKA) INC Initial Class(fype DEV / PEND GeoArea 890 Unit 11650 OnlOff Shore On Annular Disposal ^ Administration 1 Pe[mit_fee attached_ _ _ _ _ _ _ _ _ _ _ _ _ _ - - - - - Yes - - - 2 Lease number appropriate_ _ _ _ _ _ . - Yes _ _ _ . . _ _ . _ _ . 3 Uniquewell_nameandnumber__________________________________.__ Yes_ ______.__________.____________ - -- -- - ------ -- -- -- -- -- -- -- 4 Well localed in_a_defined_pool. , _ _ , _ . Yes . . _ _ _ _ Prudhoe Ba Field-Prudhoe Ba .Pool. Y_ Y . 5 Well located proper distance f[om drilling unit_bo~nda_ry_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Ye~ _ _ . _ . _ _ . . _ . . . 6 Well locat_ed proper distance from other wells_ . _ _ _ , _ Yes _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 7 Suffcientacreageayail_ablein_drillinqunit______________________________ _ Yes_ _.______,__.__________ 8 If deviated, is,wellbore plat_included _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Yes _ _ _ _ _ _ _ _ _ _ _ . 9 Operatotgnlyaffectedparty-------------- ---- - ---------------- - Yes- _--- 10 Op~rakorhas_appropriate_bondinforce________________ - Yes_ _.._.Bond#619419$_.____________________________________ ---- -- 11 Permit_canbeissuedwithoutcons@ryaiionorder_______ _______________ ____ Yes_ ____________ ,______ ___._ Appr Date 12 Petmit.can be issued without ad_ministrative_approval _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Yes _ _ . . _ . _ _ _ _ . _ _ . , _ _ . _ _ , ACS 4I612007 13 Can permit be approved before 15-day wait Yes 14 Well located within area and_strata authorized ~y_Injecti_on O[de[ # (puk 10# in_comment~)_ (Fpr. NA_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 15 Ali wells within 1/4_mile area of reyiew identified (For service well only) _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Yes _ _ _ _ _ _ _ _ _ _ _ _ _ _ , _ _ _ _ _ _ _ _ _ _ . _ - -------- - - ------ -- -- -- ------ - 16 Pre-produced injector; ducation_of pre production I_ess than 3 months_ (For_se[vice well only) _ _ NA _ _ _ _ _ _ _ _ _ _ _ _ _ _ 17 Nonconyen, gas confgrms to AS31,05,030~.1.A),Q.2.A-Dj _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ NA_ _ _ _ _ . _ _ , _ _ . _ _ _ , Engineering 18 Condu_ctor string_provided _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ NA_ _ -- - -- _ _ _ _ _ Conductar set.in 12-12 (181-083).. 19 Surface casing,protect& all_known_ U$DWs _ _ _ _ _ _ _ _ _ „ _ NA_ _ _ _ _ _ _ $urface casing set in 12-12, _ 20 _C_MT_voladequate_to ci[culate.on conductor & surf_csg _ _ _ _ _ NA_ _ _ _ _ _ _ Surface casing set in 1_2-12. _ _ 21 CMT.vol adequate,to tie•in long string to su _rf csg_ ___ __ Yes _ ____ The]" liner and_ti_eback a[e planned_ to be fully cemented._ Window ~ 850' below surface casing shoe._ . 22 CMT_will coyer ali known_productive horizon_s_ . _ . _ . . _ _ No_ _ _ _ _ . _ Slotted liner completion planned._ _ _ _ . _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 23 CaSing desgn& adequate fo[ G,_T, B &_permafrost_ _ _ _ _ _ _ _ _ _ Yes _ _ _ _ . 24 Adequaie tankage_or reserve p~ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Yes _ _ _ _ _ . _ Rig is_e_quipped with steel_pits. _ No reserve_pitplanned, All waste to_approved dispos_alwell(s). _ _ _ _ _ _ _ . ~ 25 If_a_ re-drill, has_a_ 1_0-403 for abandonment been approved _ _ _ Yes _ _ _ _ _ . , 307-104 _ _ _ _ _ _ _ . _ _ 26 Adequate wellbore separation_proposed _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Yes _ _ _ _ _ _ _ Proximity analysis performed, _Gyros_likely on adjacent wells to con_firm locations_plan and clearances. _ _ . , _ _ 27 If_dive[ter required, does it meet regulations. _ _ . . . - NA_ _ _ _ _ , . BOP stackwill already_be in place_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Appr Date 28 Driliing fluid_ program schematic & e ui list ad~quate. , ~ p Yes Maximum expected fo[matipn pressure 7,1_EMW._ Planned MWS 11.5 ppg_ in 8-1/2" hoie and,8.5 ppg in Sad, _ TEM 411112007 29 _B_OPEs,_dotheymeetregulation-----.__--- Yes- ----- -------------- -- _-_--_-----_.---_ -,--_--_----------- g~~q~~ fl ~ 30 BOPE.press rating appropriate; test to_(put psig in comments) ___ Yes _ __ MASP calculated at 2338 psi_ 3500 psi BOP teStplanned, __ ~r ~~'T ~ ~ 31 Choke_manifold complies wlAPI_ RP-53 (May 84) . Yes _ _ _ ~ 32 Work will occur without operation shutdown _ . _ _ Yes _ . _ _ _ _ . 33 Is presence_of H2S gas, probable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Yes _ _ . _ _ _ _ H2S is reported_in offset Rroduction._ Mud should p[eclude pn, rig, Rig has senso[s and alarms, _ _ _ 34 Mecha_nical_condition o(wells within AOR yerified (For_service well only) _ _ _ _ _ _ _ _ _ _ _ _ _ NA_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ . _ _ , _ _ _ Geology 35 Permit_can be issued wlo hydrogen, sulfide measures _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ No_ _ - - ---- --------- ------- _ _ , . . _ Nearesf wells:_ 12-13=10 ppm; 13-02B=50 ppm;_12-17=50_ppm, (12106), . _ _ , _ ~ 36 Data.ptesented on_potential overpre&sur_e zones_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ . NA . _ , _ . _ Appr Date 37 Seismic_analysis of shallow gas_zones_ .____. NA . - ACS 416I2007 38 Seabed condition survey_(if off-sho[e) ._._: NA 39 Contact namelphone for weekly,p_rogress reports [exploratory only~ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Yes _ _ _ _ _ _ _ Mehrdad Nadem - 564-5941 _ Geologic Engineering Public Commissioner: Date: Commissioner: Date Comm' ' Date D~S ~ ~1 ~ ~ //-o ~- / / ~ ~