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Home My WebLink About201-065 Image~ ,'oject Well History' File Cover Fi je XHVZE This page identifies those items that were not scanned during the initial production scanning phase. They are available in the original file, may be scanned during a special rescan activity or are viewable by direct inspection of the file. Organizing i~o,,~t [] RESCAN [] Color items: [] Grayscale items: [] Poor Quality Originals: [] Other: NOTES: DIGITAL DATA Diskettes, No. Other, No/Type BY: BEVERLY ROBIN VINCENT SHERYL ~INDY Project Proofing BY: BEVERLY ROBIN VINCENT SHERY~WINDY Scanning Preparation ~ x 30 = (~ 0 BY: BEVERLY ROBIN VINCENT SHERYL~WINDY OVERSIZED (Scannable) [] Maps: [] Other items scannable by large scanner OVERSIZED (Non-Scannable) [] Logs of various kinds [] Other Production Scanning Stage I PAGE COUNT FROM SCANNED FILE: ........ / PAGE COUNT MATCHES NUMBER IN SCANNING PREPARATION: , YES Stage 2 IF NO IN STAGE 1, PAGE(S) DISCREPANCIES WERE FOUND: ~ YES BY: BEVERLY"~I~ VINCENT SHERYL MARIA WINDY DATE:-~-~,-~ NO NO (SCANNING IS coMPLETE AT THIS POINT UNLESS SPECIAL ATTENTION IS REQUIRED ON AN INDIVIDUAL PAGE BASIS DUE TO QUALITY, GRAYSCALE OR COLOR IMAGES ) RESCANNEDB~¢~ BEVERLY ROBIN VINCENT SHERYL MARIA WINDY DATE: Is~ General Notes or Comments about this file: Quality Checked 12/10/02Rev3NOTScanned.wpd omml~ 1 a. Well Status: DOil DGas D Plugged 181 Abandoned D Suspended 1 b. Well Class: Anchorage 20AAC 25.105 20AAC 25.110 181 Development D Exploratory DGINJ DWINJ D WDSPL DWAG D Other No. of Completions Zero D Service D Stratigraphic 2. Operator Name: 5. Date Comp., Susp., or Aba~ 12. Permit to Drill Number BP Exploration (Alaska) Inc. 07/25/2007 7~~A.1 201-065 - 307-205 3. Address: 6. Date Spudded 13. API Number P.O. Box 196612, Anchorage, Alaska 99519-6612 05/11/2001 50-029-21652-01-00 / 4a. Location of Well (Governmental Section): 7. Date T.D. Reached 14. Well Name and Number: Surface: 05/26/2001 PBU G-25A j 2617' FNL, 1973' FEL, SEC. 12, T11N, R1;¡, ~ 8. KB (ft above MSL): 72.40' 15. Field 1 Pool(s): Top of Productive Horizon: ~¢o1 2697' FNL, 2224' FWL, SEC. 07, T11N, RJdE, UM- Ground (ft MSL): 34.7' Prudhoe Bay Field 1 Prudhoe Bay Total Depth: It.( åÇt..J 9. Plug Back Depth (MD+ TVD) Pool 1857' FNL, 1255' FWL, SEC. 07, T11N, R1,ZE, UM 12326 8953 4b. Location of Well (State Base Plane Coordinates, NAD 27): 10. Total Depth (MD+TVD) 16. Property Designation: / Surface: x- 658254 y- 5969032 Zone- ASP4 12391, 8949 ., ADL 028304 / TPI: x- 662452 y- 5969042 Zone- ASP4 11. SSSV Depth (MD+ TVD) 17. Land Use Permit: Total Depth: x- 661465 5969861 Zone- ASP4 N/A y- 18. Directional Survey DYes 181 No 19. Water depth, if offshore 20. Thickness of Permafrost (TVD): (Submit electronic and crinted information cer 20 AAC 25.050\ N/A ft MSL 1900' (Approx.) 21. Logs Obtained (List all logs here and submit electronic and printed information per 20 AAC 25.071): CNL, GR 22. CASING, LINER AND CEMENTING RECORD SETTIN~ DEPTH MD SETTING DEPTH TVD .... AMOUNT HOLE Wr. PÈR FT. GRADE Top BOTTOM Top BOTTOM SIZE - ..... Puù.È[) . 20" Insulated Conductor Surface 110' Surface 110' 26" 9 cu vds Concrete 13-3/8" 72# L-80 1 S-95 39' 2785' 39' 2685' 17-1/2" 3890 cu ft Permafrost 9-518" 47# L-80 36' 9724' 36' 8337' 12-1/4" 590 cu ft Class 'G' 5-112" 17# L-80 9462' 10169' 8113' 8723' 8-112" 484 cu ft Class 'G' 3-3/16" x 2-7/8" 6.2# 16.16# L-80 9382' 12391' 8044' 8949' 3-3/4" 146 cu ft Class 'G' 23. Open to production or injection? DYes 181 No 24. '.. .... < < \ ....i. If Yes, list each interval open SIZE DEPTH SET (MD) PACKER SET (MD) (MD+ TVD of Top & Bottom; Perforation Size and Number): None 4-1/2",12.6#, L-80 9465' 9322' MD TVD MD TVD 25. . Adó.;--/ .,.. / ...i ,I;'T6. / ',./ /«.. vt::I\I!t::N.1 ..... r "/ SCANNED SEP o 7 2007 DEPTH INTERVAL (MD) AMOUNT & KIND OF MATERIAL USED 1 0220' Set Whipstock 26. PRODUCTION TEST Date First Production: . .,......._..'f;..... ,- Method of Operation (Flowing, Gas Lift, etc.): Not on Production N/A Date of Test: Hours Tested: PRODUCTION FOR Oll-Bsl: GAs-McF: WATER-Bsl: CHOKE SIZE: I GAS-Oil RATIO: TEST PERIOD ~ Flow Tubing Casing Press: CALCULATED OIL-Bsl: GAs-McF: WATER-Bsl: Oil GRAVITY-API (CORR): Press. 24-HoUR RATE+ 27. CORE DATA Conventional Core(s) Acquired? DYes 181 No Sidewall Core(s) ACQuired? DYes 181 No If Yes to either question, list formations and intervals cored (MD+ TVD of top and bottom of each), and summarize lithology and presence of oil, gas or water (submit separate sheets with this form, if needed). Submit detailed descriptions, core chips, photographs and laboratory analytical results per 2'1 AAC 250.071. None ;7-~~..o, RBDMS 8Fl AVG 2 3 2007 ,~ . STATE OF ALASKA a ~ RECEIVED ALASKA OIL AND GAS CONSERVATION COMW§SION AUf, WELL COMPLETION OR RECOMPLETION REPORT AND LOG .\ !J 1 6 2007 tHa~ka Oil & Gas Cons C ion Form 10-407 Revised 02/2007 0 R , GIN A 1NTINUED ON REVERSE SIDE ~ 872t«!7 6 28. GEOLOGIC MARKERS (LIST ALL FORMATIONS AN RS ENCOUNTERED): NAME MD TVD Permafrost Top Permafrost Base 21N 10414' 8877' 21P 10424' 8881' Zone 1B 114N 10978' 8936' 14P 11078' 8953' 29. FORMATION TESTS Well Teste . DYes 181 No If yes, list intervals and formations tested, briefly summarizing test results. Attach separate sheets to this form, if needed, and submit detailed test information per 20 AAC 25.071. None Formation atTotal Depth (Name): 30. List of Attachments: Summary of Pre-Rig Work and Daily Drilling Reports, Well Schematic Diagram Signed Terrie Hubble Title Technical Assistant Date Û8(r5/07 PBU G-25A Well Number 201-065 307-205 Permit NO.1 A roval No. INSTRUCTIONS Prepared By NamelNumber: Drilling Engineer: Terrie Hubble, 564-4628 Garret Staudinger, 564-4242 GENERAL: This form is designed for submitting a complete and correct well completion report and log on all types of lands and leases in Alaska. Submit a well schematic diagram with each 10-407 well completion report and 10-404 well sundry report when the downhole well design is changed. ITEM 1a: Classification of Service Wells: Gas Injection, Water Injection, Water-Alternating-Gas Injection, Salt Water Disposal, Water Supply for Injection, Observation, or Other. Multiple completion is defined as a well producing from more than one pool with production from each pool completely segregated. Each segregated pool is a completion. ITEM 4b: TPI (Top of Producing Interval). ITEM 8: The Kelly Bushing and Ground Level elevation in feet above mean sea level. Use same as reference for depth measurements given in other spaces on this form and in any attachments. ITEM 13: The API number reported to AOGCC must be 14 digits (ex: 50-029-20123-00-00). ITEM 20: Report true vertical thickness of permafrost in Box 20. Provide MD and TVD for the top and base of permafrost in Box 28. ITEM 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). ITEM 26: Method of Operation: Flowing, Gas Lift, Rod Pump, Hydraulic Pump, Submersible, Water Injection, Gas Injection, Shut-In, or Other (explain). ITEM 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. ITEM 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 0212007 Submit Original Only Digital Wellfile . Page 1 of 1 . Well: G-25 Well Events for SurfaceWell - G-25 Location: BP -> ALASKA -> GREATER PRUDHOE BAY -> GC1 -> G -> G-25 Date Range: 06/Ju1/2007 to 22/Ju1/2007 Data Source(s): AWGRS Events Source Well Date AWGRS G-25A 07/22/2007 AWGRS G-25A 07/21/2007 AI)\IG RS G-25A 07/21/2007 AWGRS G-25A 07/20/2007 AW GJ35 G-25A 07/20/2007 Description T/I/O= BPV/Vac/Vac. Temp= S1. Monitor WHP's (pre-CTD). No change in pressures. T/I/O=BPV/VAC/VAC Temp=SI Monitor WHPs (pre-CTD). No change in WHPs. PULL TWC &SET BPV FOR PRE RIG T/I/O = TWCV/vac/vac. Temp = S1. Bleed WHPs to 0 psi/Assist Cameron (PPPOTs, pre-RIG). Assisted Cameron with PPPOT-T,IC & LDS function. T/I/O=O/O/O. PPPOT-T (PASS), PPPOT-IC (PASS). Pre CTD. Two way check in BPV profile. PPPOT- T: Opened bleeder screw to bleed test void (fluid). Removed 1" plug and internal check, installed Alemite external check. Stung into test port with high pressure bleeder tool. Functioned LDS, all moved freely with no sign of bent or broken pins, torqued to 550 Ib/ft. Pressured void to 5000 psi for 30 min test, lost 175 psi in 15 min, lost 50 psi in second 15 min. Bled void to 0 psi. (PASS). PPPOT-IC: Opened bleeder screw to bleed test void (fluid). Removed 1" plug and internal check, installed Alemite external check. Stung into test port with high pressure bleeder tool. Functioned LDS, all moved freely with no sign of bent or broken pins, torqued to 550 Ib/ft. Pressured void to 3500 psi for 30 min test, lost 800 psi in first min. Re-torqued LDS to 600 Ib/ft. RU elephant gun to re energize secondary Y seal with plastic pack, pump 1 stick of plastic. Re-pressure test void to 3500 psi for 30 min test, lost 100 psi in 15 min, lost 0 psi in second 15 min (PASS). Bled void to 0 psi. fi"-'VGB5. G-25A 07/19/2007 T/I/O=700/50/25. Temp S1. Bleed WHP's to 0 (pre PPPOT pre rig). TBGP FL 2580'. IA FL near surface. OA FL @ surface. Bled TBGP from 700 psi to 100 psi in 3 hours. Liquid to surface shut in to swap out gas. TBGP increased to 650 psi in 30 min. Bled lAP from 50 psi to 0 psi in 30 min. Bled OAP from 25 psi to 0 psi in 10 min. Monitored for 1 hour. Final WHP's T/I/O=700/0/0. SET TWC / TEST TREE/ PACKOFF TEST CTU 9 W 1. 75" CT, Drift with DMY Whipstock. Continued from 07/16/07. MU and RIH with 2.7 " Nozzle and 2.7" DMY whipstock. B-IH and taq XO at 10226'. Confirm Taq at 10226'. POOH and FP well. RDMO, Go to Planned Maintenance *** Job Completed *** CTU 9 W 1.75" CT, Drift with DMY Whipstock. Move in, Wait on Veco to complete the rig up. Continued on 7/17/07 ***CONT JOB FROM 7-6-07*** DRIFT TBG W/ 2.70 CENT SD@ 10215' SLM, CENT SHOWED RING MARK FROM XO @ 10245' MD. DRIFT TBG W/ 6' x 2.73" DRIFT SD @ 10155' SLM, COULD NOT MAKE ANY HOLE, DRIFT CAME BACK W/ THIN SCRATCHES ABOUT 19" LONG STARTING AT 2' FROM BOTTOM OF DRIFT. RAN 2.72 BROACH SD @ 10215' SLM. ****TURN WELL OVER TO PAD OP, WELL LEFT S/I***** AWGRS G-25A 07/06/2007 *** WELL S/I ON ARRIVAL**** RIH W/ 10' x 2.70" DRIFT TO 10240' MD, SD HIGH @ 10158' SLM **** CONT JOB ON 7-7-07*** AWGRS G-25A 07/19/2007 A WG~5. G-25A 07/17/2007 Av.Y.GBS G-25A 07/16/2007 AWGRS G-25A 07/07/2007 http://digitalwellfile.bpweb.bp .com/WellE vents/Home/Default. aspx 8/15/2007 . BP EXPL Operations Su Legal Well Name: Common Well Name: Event Name: Contractor Name: Rig Name: G-25 G-25 REENTER+COMPLETE NORDIC CALISTA NORDIC 1 7/23/2007 Code NPT Ip Ip I I i I PRE PRE 6.00 MOB 6.50 I RIGU I 03:30 - 09:30 09:30 - 16:00 16:00 - 23:00 7.00 BOPSU~ P I PRE 23:00 - 00:00 i I i I 1.00 BOPSU~ N I I SFAL PRE 7/24/2007 00:00 - 00:30 0.50 BOPSU1 N SFAL PRE 00:30 - 01 :00 0.50 BOPSU P PRE 01:00 - 01:15 0.25 KILL Ip WEXIT 01:15 - 04:00 2.75 KILL Ip WEXIT I I I 04:00 - 05:00 1.00 KILL P WEXIT 05:00 - 06:00 1.00 KILL Ip WEXIT 06:00 - 06:50 0.83 KILL f WEXIT 06:50 - 12:00 5.17 BOPSU N SFAL WEXIT 12:00 - 12:45 0.75 BOPSU1N SFAL WEXIT 12:45 - 13:10 0.42 BOPst WEXIT 13:10 - 13:30 0.33 BOPSU P WEXIT I I 13:30 - 13:45 0.25 KILL P WEXIT . Start: 7/18/2007 Rig Release: 8/12/2007 Rig Number: N1 Spud Date: 10/1/1986 End: 8/12/2007 Move from E-19B to G-25A. Accept rig at 09:30. Installed reel. NU BOP. Swap rams for 2" CT. Change out gripper blocks on injector. PU brand new CT reel, length of CT 15700', e-line 15900', slack is 1.27percent BOP test witnessing waived by Chuck Scheeve AOGCC. Tested all lines rams and valves to 250 and 3500 psi for 5min each, annular to 250 -2500 psi 5min each, choke manifold valves 250-3500 psi 5min each, note VBR failed pressure test, borrowed a set of seals Nordic 2, Performed Accumulator draw down test RU hardline and heading up e-line connector in reel during BOP test Open VBR door, attempt to pull VBR's, found guide plate deformed and mushroomed, similiar to what happen to lower 2 3/8" combi on E-11, grinded down the guide plate to remove the rams, damage was caused by closing rams on oversize pipe, believed to have happen during last koomey draw down test, found 3 1/2" test joint which is believed to be what caused the damage to the VBR guide plate with fresh marks on cDllar on test joint, unable to use VBR's do to damage to guide plates, would not align properly, did not have spare VBR's Install 2 3/8" combi Install test joint, tested rams from 250 - 3500psi, OK, LD test joint PJSM with crew on pulling CT across pipeshed Pull test internal grapple, pull CT across, stab injector, cut off internal grapple, NU stuffing box to injector, run CT thru S'¡¡.me, RU hydraulic CT cutter, cut 55' of 2" CT, found e-line cab1e, check and meg e-line, OK, boot e-line, RO hydraulic cutter, stab injector Pump 7bbls down CT, test hardline to inner reel valve to 4000psi, continue circ at 1.5bpm, 1400psi, filling CT with double slick KCL RU, rev circ, performing slack management, heard e-line move while rev circ, RU hydraulic cutter, cutting 220' CT, 22' of e-line Pull BPV with lubricator. Released BPV gas to possum bellt Shut in well at choke. Well not properly shut in for Pulling BPV. Notify Anch CTO manager, AOGCC Chuck Scheeve, GC1 operator X4084, Unable to contact G pad operatordirectly.Notify Nordic mgt Alan Graff, AlanMaddsen Conduct Investigation of gas release. Debrief on current operations with CoMan and Alan Madsen, Drlg Supt PJSM with BPV crew, rig personnel on pulling BPV, valve alignment, safety hazards and precautions Open well, finished releasing and pulling BPV with lubricator, shut in master valve, open choke released trap pressure to tiger tank, RD lubricator and BPV, secured well, offload lubricator and BPV from rig floor PJSM on handing and heading up CTC and e-coil, adjusting Printed: 8/15/2007 1 :40:04 PM . . BP Legal Well Name: G-25 Common Well Name: G-25 Spud Date: 1 0/1/1 986 Event Name: REENTER+COMPLETE Start: 7/18/2007 End: 8/12/2007 Contractor Name: NORDIC CALISTA Rig Release: 8/12/2007 Rig Name: NORDIC 1 Rig Number: N1 Date Code NPT Phase 7/24/2007 13:30 - 13:45 0.25 KILL P ¡WEXIT rollers on gooseneck for 2" CT 13:45 -15:15 1.50 KILL P IWEXIT Adjust rollers for 2" CT, Install Kendall dipple CTC, pull test to 36K 15:15 -16:00 0.75 KILL P WEXIT MU Nozzle BHA #1 with UOC, head up e-line, Meg e-line, ok, installed LaC blind sub, and nozzle 16:00 - 16:30 0.50 KILL P WEXIT PJSM with all involved personnel on pumping operations, valve alignment and good communication 16:30 - 19:00 2.50 KILL P WEXIT Pressure Test CT riser to 3500 psi, est circ rates at 1.09bpm, 1380psi, 1.59bpm, 2080psi, 2.19bpm, 3014psi, 2.50, 3500psi, Pressure up to 1500psi, open swab and master valves, Shut in pressure stabilized at 1406psi, bullhead down tubing at 1.50bpm, 3350 - 2900psi, pressure increased to 3450psi after pumping 116bbls, slowed pumps down to 1.22bpm, 3180psi. Bullhead a total of 142bbls of fluid @ 1 bpm/3500psi CTP & 2600 WHP. Not getting required +/-4bpm rate to kill well. 19:00 - 19:25 0.42 KILL P WEXIT Attempt to snub in hole - injector tripping out @ -14k. Line up to take returns to the tiger tank. Attempt to bleed down the WHP via the Swaco auto choke - not working properly. Switch to manual choke & bleed off WHP to 1800psi with -11 k CT wt. 19:25 - 21 :30 2.08 KILL P WEXIT RIH with nozzle BHA #1 to 10200' maintaining +/-1800psi WHP & taking gassy returns to the tiger tank. 21 :30 - 22:20 0.83 KILL Ip WEXIT S/I choke & bullhead 15bbls KCL fluid (vol from 10200' to i PBTD) into perfs @ 0.75bpm/2800psi CTP & 2250psi WHP. 22:20 - 00:00 1.67 KILL P WEXIT Open up choke & attempt to kill well conventionally with 1.92bpm/4000psi CTP & 2000psi WHP. 7/25/2007 00:00 - 00:45 0.75 KILL P WEXIT Continue pumping to kill well conventionally with 2.15bpm/4000psi & 2000psi. Observe frosting on choke manifold lines & valves - suspect gas hydrates & possible ice-plugging of choke lines. Also did not getting back much returns after 280bbls pumped. 00:45 - 03:00 2.25 KILL P WEXIT Open up choke more & continue pumping additional 11 Obbls until returns cleaned up. Circ 2X BU with no gas to surface. Start taking returns to pits. Bleed down OAP from 1 OOOpsi to 250psi. Meanwhile call for 150kcps flo-pro pill to squeeze into IWEXIT the perfs before POOH. 03:00 - 04:00 1.00 KILL P Line up & pump down 40bbls of 150kcps flopro pill down to I nozzle. S/I well & squeeze-in 20 bbls @ 0.93bpm/3300psi CTP & 1550-1750psi WHP. Open up choke & lay-in remaining flopro pill 1 :1. 04:00 - 05:45 1.75 KILL P WEXIT POOH nozzle BHA#1. 05:45 - 06:45 1.00 KILL P WEXIT Flowcheck well - stable while having change out with WSL and i tool pusher discussing plan forward 06:45 - 07:15 0.50 KILL P WEXIT PJSM on injector handling for bha changes and opening 2" drain line 07:15 - 07:30 0.25 KILL P WEXIT POH with nozzle BHA #1, LD same 07:30 - 08:00 0.50 WHIP P WEXIT Make up BHA#2 with whipstock and Mech WS Packer. 08:00 - 10:35 2.58 WHIP P WEXIT RIH BHA#2 tD 9750. 10:35 - 10:45 0.17 WHIP P WEXIT Ran tie in pass. CDrrelated back to PDC log. Baker correction of plus 1, SLB CT minus 13. 10:45 - 10:55 0.17 WHIP P WEXIT RIH to 10228. Set whipstock. TOWS 10220, BOWS 10228. 10:55 - 12:15 1.33 WHIP P WEXIT POH BHA#2. 12:15-12:30 0.25 WHIP P IWEXIT Pressure test whipstock packer to 2000 psi. 12:30 - 13:30 1.00 WHIP P WEXIT PJSM laying down BHA and unstabing injector. POH with Printed: 8/15/2007 1 :40:04 PM Legal Well Name: Common Well Name: Event Name: Contractor Name: Rig Name: 7/25/2007 Date From - To . . G-25 G-25 REENTER+COMPLETE NORDIC CALISTA NORDIC 1 Start: Rig Release: Rig Number: Phase 7/18/2007 8/12/2007 N1 Spud Date: 10/1/1986 End: 8/12/2007 1.00 WHIP P 0.50 STWHIP P 0.33 STWHIP P 0.42 STWHIP N 1.42 STWHIP N I IIWEXIT WEXIT 'WEXIT DFAL WEXIT DFAL WEXIT 12:30 - 13:30 13:30 - 14:00 14:00 - 14:20 14:20 - 14:45 ' 14:45 - 16:10 16:10 - 18:30 2.33 STWHIP P WEXIT ~ 18:30 - 19:30 1.00 STWHIP P WEXIT G:t5ß 19:30 - 20:45 1.25 STWHIP P WEXIT 20:45 - 21:40 0.92 STWHIP P IWEXIT 21 :40 - 22:40 1.00 STWHIP P WEXIT 22:40 - 23:00 0.33 STWHIP P WEXIT 23:00 - 23:45 0.75 STWHIP P WEXIT 23:45 - 00:00 0.25 STWHIP P WEXIT 7/26/2007 00:00 - 01 :00 01 :00 - 01 :45 01 :45 - 03:45 03:45 - 04:45 04:45 - 05:35 1.00 STWHIP P WEXIT 0.75 STWHIP P WEXIT 2.00 STWHIP P 1.00 STWHIP P WEXIT WEXIT 0.83 DRILL P PROD1 05:35 - 07:20 1.75 DRILL P PROD1 07:20 - 07:40 0.33 DRILL P PROD1 07:40 - 08:00 0.33 DRILL P PROD1 08:00 - 13:30 5.50 DRILL P PROD1 BHA#2 and lay down whipstock running tool. PU milling assembly, BHA#3. RIH with BHA#3. Stop at 1400ft. CoilTrac is not working. POH to BHA#3. Troubleshoot BHA#3. Change out Power and Communication Sub. RIH with BHA#3. Tag WS/Lnr pinch pt without pumps @ 10232'. P/U with 30k up wt. Down wt = 18.5k. Bring on pumps & establish freespin @ 1.5bpm/1700psi. RBIH with pumps on & retag WS/Lnr pinch pt @ 10231.6'. Correct CTD to 10220' inch t CTD & fla CT. Start milling window with 1.55/1.55bpm, 1700/1800psi, 1 k DWOB & 1fph ave ROP. Mill to 10221'. Mill to 10222' with 1.55/1.55bpm, 1700/1890psi, 1.8k DWOB & 0.8fph ave ROP. Mill to 10223' with 1.55/1.55bpm, 1700/1800psi, 0.8k DWOB & 1fph ave ROP. Mill to 10224' with 1.55/1.55bpm, 1700/1800psi, 0.8k DWOB & 1fph ave ROP. MWD still acting up. Mill to 10225' with 1.55/1.55bpm, 1700/1800psi, 0.8k DWOB & 1fph ave ROP. Exit into formation @ 10225'. Control mill to 10226' with 1.55/1.55bpm, 1700/1800psi, 0.8k DWOB & 1.3fph aye ROP. Wiper trip clean to 10200'. RBIH clean to btm. Establish frees pin @ 1.5bpm/1600þsi. Observe MWD communicating only to the BCM in the P&C. No good communication could be established from the CTM & other components below. Currently will not be able to disconnect in the worst case scenario of getting stuck. Decide to finish up rat hole with current BHA failure. Control mill 1 0' formation to 10235' with 1.5/1.5bpm, 1550/1850psi, 9fph ave ROP & 2.4k DWOB. Swap wellbore to 8.6 ppg reconditioned flopro mud with 12ppb K-G & 3% L-T. Meanwhile backream/dress window/rat hole several times. Window looks clean. Tentative window depths are: TOWS = 10220', TOW = 10220', BOW = 10225', RA Pip tag = 10225'. POOH window milling BHA #3, while displacing well to mud. PJSM. UD BHA #3 & inspect mills. Both window mill & string mill gauge 2.73" go / 2.72" no-go. Wear on window mill face indicate center crossed the liner wall, found EDC sub shorted out internally M/U drilling BHA#4 with new Hughes 2.7" x 3" DOSTRWD bicenter bit #2, 1.1 deg X-treme motor, BHI HOT, USMPR, DGS, DPS, EDC, P&C, SWP, LQC & UQC. Scribe tools. M/U injector & Initialize/function test BHI tools. RIH drilling BHA#4 to 9773', up wt at 9300' 28k Tie-in pass f/ 9773' to 9808', corrected CT -6', Baker coiltrak +7,dn wt at 9773', 2.4fpm, 14.9k RIH to TOW, orient TF to 30L, slide thru window without pumps to btm Drill to 10400', TF at 19L-58R, 1.58/1.57bpm, 3000psi, FS 1.58bpm, 2750psi, ECD 9.57ppg, WOB .5-1k, AP 4314psi, BP Printed: 8/1512007 1 :40:04 PM 9249' I I Minimum ID::: 1.995", 2-3/8" LINER, 10,024' Nordic Rig 1, G-25A incidenWormation . Page 1 of tl þÛ.,y., Maunder, Thomas E (DOA) From: Sent: To: Cc: Engel, Harry R [Harry.Engel@bp.com] Thursday, August 16, 2007 2:55 PM Maunder, Thomas E (DOA) Archey, Pat; Staudinger, Garret; NSU, ADW Drlg HSE Advisor; Madsen, Alan D (Fairweather); Engel, Harry R; Rossberg, R Steven; NSU, ADW Drlg Nordic 1 Supervisor Subject: Nordic Rig 1, G-25A incident information - ~\-b(05 Tom- This is a follow-up to our telephone conversation earlier today regarding the subject incident. The incident occurred July 24, 2007 on Nordic Rig #1 while pulling a Back Pressure Valve (BPV) from well G-25A. The incident resulted in a small volume gas release and we believe it did not require notification to the AOGCC as required in 20 AAC 25.205. However we did notify the AOGCC shortly after the incident occurred. The purpose of this email is to provide you with a summary of the incident and corrective actions that will prevent future occurrences. SummalY The rig crew and valve crew rigged up a lubricator on top of the Blow Out Preventers (BOP) to pull the BPV set just below the well tree. While unseating the BPV, gas was released to the shale shaker possum belly. The crew closed a drain valve on the BOP stack and shut in the choke manifold. Both of these systems were determined to be open. In a matter of minutes the well was shut in and secured. Notifications of the gas release were made and the investigation was initiated. There we no injuries associated with this incident. The incident can be attributed to failure to follow field procedures. Corrective Actions 1. Standard Operating Procedures (SOP) will be updated to reflect BPV operations performed on coil tubing and rotary rigs. SOP's will include the possibility of a gas release during BPV operations. 2. The incident and lessons learned have been discussed in appropriate contractor crew safety meetings. Safety meetings will reinforce the use of procedures and Task Hazard Assessments (THA). 3. Nordic has developed a procedure where the Toolpusher is the only person who can open the BOP drain valves. 4. Disciplinary action has been taken. 5. BPXA Alaska Drilling & Wells (ADW) has developed and communicated a Safety Alert describing the incident and lessons learned. I want to emphasize that BPXA and our contractors have taken this incident seriously and have imitated actions to prevent future occurrences. Please consider this the final report associated with this incident. Regards, Harold R. Engel (Harry) Engineering Team Leader 8/17/2007 G-25B Well Control InCident. . Page 1 of2 Maunder, Thomas E (DOA) From: Archey, Pat [Patrick.Archey@bp.com] Sent: Wednesday, August 15, 20076:01 PM To: Maunder, Thomas E (DOA) Subject: RE: G-25A (201-065) Well Control Incident Tom, We'll get you something. A report was done and is in our traction system. I don't know if BP sends out that report or if we summarize it in an e-mail. I'm checking with Harry, but what do you usually get from us? Pat Archey 8P Alaska Coiled Tubing Drilling Manager 1JIIk. (907) 564-5803 Cell (907) 240-8035 - --~------_. From: Maunder, Thomas E (DOA) (mailto:tom.maunder@alaska.gov] Sent: Friday, August 10, 20077:41 AM To: Staudinger, Garret Cc: Archey, Pat; Crane, Lowell R; aogcc_prudhoe_bay@admin.state.ak.us Subject: RE: G-25A (201-065) Well Control Incident Garret, I was wondering if there was any further information regarding the investigation into the Nordic 1 incident on G- 25A Thanks, Tom Maunder, PE AOGCC From: Maunder, Thomas E (DOA) Sent: Tuesday, July 24, 2007 9:53 AM To: Staudinger, Garret Cc: AOGCC North Slope Office; Pat Archey; Lowell Crane Subject: RE: G-25A (201-065) Well Control Incident Garret, Thanks for the message. Keep us informed as additional information is available. Also, please note that I believe the proper well reference should still be G-25A since no knew drilling work had been done. I have made this change in the subject line and added the permit to drill number. The work underway was authorized by sundry 307-205. Call or message with further information. Tom Maunder, PE AOGCC ~--~_..~-----'----"-'--_._----'_._---~--~~---~ From: Staudinger, Garret (mailto:Garret.Staudinger@bp.com] 8/17/2007 G-25B Well Control InCident. . Page 2 of2 Sent: Tuesday, July 24,20079:16 AM To: Maunder, Thomas E (DOA) Subject: G-2SB Well Control Incident Tom, There was a well control incident this morning on Nordic 1 around 07:00. Nordic 1 was rigged up on G-25 when there was a gas release to the possum belly. An investigation of the incident is currently underway and more details are to follow. Thank you, Garret Staudinger BP Exploration Alaska, Inc. CTD Engineer Work: (907) 564-4242 Cell: (907) 440-6892 8/17/2007 . ~V~VŒ (ID~ ~~~~æ~ . A I~AfliliA. OIL AlQ) GAS COlWSBRVATlOlW COMMISSION SARAH PALIN, GOVERNOR 333 W. 7th AVENUE, SUITE 100 ANCHORAGE, ALASKA 99501·3539 PHONE (907) 279·1433 FAX (907) 276-7542 Garret Staudinger CT Drilling Engineer BP Exploration (Alaska) Inc. PO Box 196612 Anchorage, AK 99519-6612 (1b \- ofÞ6 Re: Prudhoe Bay Field, Prudhoe Bay Oil Pool, PBU G-25A Sundry Number: 307-205 Dear Mr. Staudinger: S'~~NaJ JUN 2 6 2007 Enclosed is the approved Application for Sundry Approval relating to the above referenced well. Please note the conditions of approval set out in the I d fi · .~... 'A' .,. enc ose orm. .. -. ... ~._- ..... .' When providing notice for a representative of the Commission to witness any required test, contact the Commission's petroleum field inspector at (907) 659-3607 (pager). As provided in AS 31.05.080, within 20 days after written notice of this decision, or such further time as the Commission grants for good cause shown, a person affected by it may me with the Commission an application for rehearing. A request for rehearing is considered timely if it is received by 4:30 PM on the 23rd day following the date of this letter, or the next working day if the 23rd day falls on a holiday or weekend. A person may not appeal a Commission decision to Superior Court unless rehearing has been requested. Sincerely, DATED this ~ay of June, 2007 Enc!. nc oraae 1. Type of Request: 181 Abandon o Suspend o Operation Shutdown o Perforate o Time Extension o Alter Casing o Repair Well o Plug Perforations o Stimulate o Re-Enter Suspended Well o Change Approved Program o Pull Tubing o Perforate New Pool o Waiver o Other 2. Operator Name: 4. Current Well Class: 5. Permit To Drill Number BP Exploration (Alaska) Inc. ~ Development D Exploratory 201-065 - 3. Address: D Service D Stratigraphic 6. API Number: P.O. Box 196612, Anchorage, Alaska 99519-6612 50-029-21652-01-00 ,/ 7. If perforating, closest approach in pool(s) opened by this operation to nearest 8. Well Name and Number: property line where ownership or landownership changes: PBU G-25A ,/ Spacing Exception Required? DYes ~No 9. Property Designation: 110. KB Elevation (ft): 11. Field / Pool(s): ADL 028304 - 72.40 ,/ Prudhoe Bay Field / Prudhoe Bay Pool 12. PRESENT WELL CONDITION SUMMARY i ..' .... ...... Total Depth MD (ft): Total Depth TVD (ft):1 Effective Depth MD (ft): IEffective Depth TVD (ft): Plugs (measured): Junk (measured): 12391 ,/ 8949 - 12326 8953 N/A N/A Casina Lennth Size MD TVD Burst Collacse Structural Conductor 110' 20" 110' 110' Surface 2746' 13-3/8" 2785' 2685' 4930 2670 Intermediate Production 9688' 9-518" 9724' 8337' 6870 4760 Liner 707' 5-1/2" 9462' - 10169' 8113' - 8723' 7740 6280 Liner 3009' 3-3/16" x 2-7/8" 9382' - 12391' 8044' - 8949' 13450 13890 Perforation Depth MD (ft): I Perforation Depth TVD (ft): I Tubing Size: Tubing Grade: Tubing MD (ft): 10750' - 12320' 8916' - 8953' 4-1/2",12.6# L-80 9465' Packers and SSSV Type: 9-5/8" x 4-1/2" TIW I Packers and SSSV MD (ft): 9322' 4-112" SSSV Otis Landing Nipple 2074' 13. Attachments: 14. Well Class after proposed work: ~ Description Summary of Proposal ~ BOP Sketch D Exploratory ~ Development D Service D Detailed Operations Program 15. Estimated Date for 16. Well Status after proposed work: Commencing Operations: June 30, 2007 DOil DGas D Plugged ~ Abandoned 17. Verbal Approval: Date: DWAG DGINJ DWINJ D WDSPL Commission Representative: 18. I hereby certify that the foregoing is true and correct to the best of my knowledge. Contact Garret Staudinger, 564-4242 Printed Name Garret Staudinger Title CT Drilling Engineer Signature j!).J- L [ ~ Prepared By Name/Number: ., Phone 564-4242 Date Sondra Stewman, 564-4750 ù"'"-t\ ~ Commission Use Onlv , I Sundry Number: 3}ryn- 4. ."". r Conditions of approval: Notify Commission so that a representative may witness D Plug Integrity o BOP Test D Mechanical Integrity Test D Location Clearance Other: \Net \ \ c.c"'~ \ (,CyV\~~__.\ ~<.. \' ~ .t\-t\-<:'" ~,~~ Subsequent Form Required: '-\0, ~ISSIONER APPROVED BY t-.2o~41 Accroved Bv: -¡ THE COMMISSION Date Form 10-403 Revised 06/2006 V" \J(/ Submit In Duplicate ~ fu..vt:IVt:U . STATE OF ALAm (p'LS'D"la ¿..;;K).ð1- JU 1 ALASKA Oil AND GAS CONSERVATION COM ION { . N 9 2007 APPLICATION FOR SUNDRY APPROVAIþ1í\~Alaska Oil & Gas Cons. Commission 20 AAC 25 280 9 , A h ORIGINAL RBDMS BFL JUN 2 6 2DD7 ~ 6P~o/ . . Obp To: ~~~~~~~( Petroleum Engineer Alaska Oil & Gas Conservation Commission From: Garret Staudinger CTD Engineer Date: June 18, 2007 Re: Prep Prudhoe G-25A for CTD sidetrack, jj,þ G-l.'17 Sundry approval is requested to prepare ~or a sidetrack. Well G-25A was sidetracked in May 2001 as a Zn lB horizontal producer. The high quality Zn lB sands that were hoped for were never encountered. The well was making less oil and more gas than expected, hit marginal, and cycled poorly with little on time. Additional perforations were added in 2002 and 2003, but there was very little benefit. REASON FOR SIDETRACK: G-25A is a high gas rate, swing well with very little on-time. Due to the low remaining value of this well and the lack of well work options, the well is recommended for a coil sidetrack. The sidetrack, G-25B, will exit the 3- 3/16" liner in Zone 2 and target reserves with a 2100' Zone lB horizontal completion. Pre-Rig Work: (Scheduled to begin June 30, 2007) 1) 0 Passed MIT-IA and MIT-OA May 2,2007 2) 0 AC -LDS; AC-PPPOT-IC, T 3) S Run dummy whipstock drift to 10245' 4) E Set 3-3/16" Baker Packer WS wi HS orientation at 10230' 5) 0 PT Packer Whipstock to 2000 psi 6) 0 PT MV, SV, WV 7 0 Blind and bleed lines, remove wellhouse, level pad Rig Work: (Schedule to egm u y , 1) MIRV Nordic 1 and test BOPE to 250psi low and 3500psi high. 2) Mill 2.74" window at 10230' and 10' of rat hole. Swap the well to Flo-Pro. 3) Drill Build: 3.0" OH, 370' (12 deg/100 planned) 4) Drill Lateral: 3.0" OH, 2100' (12 degl100 planned) 5) MAD pass with resistivity tools in memory mode 6) Run 2-3/8" solid liner leaving TOL at 10030' 7) Pump cement leaving TOC at 10030' 8) Cleanout liner and MCNL/GR/CCL log 9) Test liner lap to 2000 psi 10) Perforate liner per asset instructions (~1 000') 11) Freeze protect well and RDMO Post-Rig Work: 1) Install well house, flow line and gas lift valves. 2) Test Separator (~1000' of perfs) ~~t.~~s'? \,'Ntr c.Q:~<é."\~O~,~\\' \sdo.~ C:, -·d-S ~ Cö-~"",\t.~' .~, 'S v..~'-J'::'" \ IJ:!M t t(" Garret Staudinger CTD Drilling Engineer 564-4242 CC: Well File Sondra Stewman/Terrie Hubble TREE = . W8..L/-EAD= AcrtJATOR= 1<8. 8.EV = SF. 8.EV = KOP= MIx Angle = Datum III[) = Datum TVD = 6" M:EVOY M:EVOY OTIS 72.4' 36.5' 1775' 96 @ 12214' 10404' 8800' SS G-25A 13-318" CSG, 72#, L-80, ID = 12.347" Minimum ID = 2.372" @ 10246' 3·3/16" X 2·718" XO 9-5/8" CSG, 47#, L-80, ID = 8.681" I 3-112" X 3-3/16" XO, ID = 2.80" I 9391' 4-112" 'ffiG, 12.6#, L-80, .0152 bpf, ID = 3.958" I TOP OF 5-112" LNR SIZE Z' 1-11/16" 1-11/16" 2' Z' Z' 2' ÆRFORA TION SlJP./IIMRY REF LOG: SNS CIII.. 05127101 ANGLE A T TOP ÆRF: 87 @ 10625' Note: Refer to Production DB for historical perf data SPF INTERVAL OFWSQZ DATE 6 10750 - 10825 0 09104I02 4 10935 - 10960 0 08f21103 11125-11150 0 08f21103 4 11440 - 11530 0 05128101 4 11590 - 11790 0 05128101 4 11840 - 12080 0 05128101 4 12180 - 12320 0 05128101 . I I SAF NOTES: WaL EXCEEDS 70· 0 10477' & GOES HORIZONTAL 010688'. 2072' -i 4-112" SSSV OTIS LNDNG NIP, ID = 3.813" 9249' 4-112" OTIS XA SLIDING SL V, ID = 3.813" 9308' TMI SBR TBG SEA L A SSY, ID = 4.750" 9322' -i 9-518" x 4-1/2" TWV PKR, ID = 4.750" I 9375' 9382' H 9416' .J 9414' H 9465' H 4-112" OTIS X NIP, ID = 3.813" 3-3/4" BKR LNR DEPLOY SL V, ID = 3.00" I 4-112" OTIS XN NIP, MILLED TO 3.80" ID I ELMD TT LOGGED 03/26/87 I 5-112" TI\IV SEAL ASSY W/O SEALS I 10168' H TOP OF WHIPSTOCK ;)-I/¿ MLLUUI VVII'lUUVV 1n1AA'-1n1~' ~ ;:---i 10245' H 3-3/16" X 2-7/8" XO, ID = 2.372" I 2-7/8" X 10' MARKERJT I 5-112" LNR, 17#, L-80, .0232 bpf, ID= 4.892" H 10800' I PBTD H 10557' DATE REV BY COMMENTS 12104186 ORIGINAL COMPLETION 05115101 RNIIlh CORRECTIONS 05125101 CHlKAK em SIDETRACK 09104102 JAFIKK ADPERF 09116102 JLGltlh MlNIWM ID CORRECTION 04/17104 lVIICIKAK PERF CORRECTIONS DATE REV BY COI\ltÆNTS 06112104 CMOIPAG DATUM CORRECTION I PBTD H 12328' I 12391' I 2-7/8" LNR, 6.16#, L-80 STL, .0058 bpf, ID = 2.372" FRUDHOE BAY UNIT W8..L: G-25A ÆRMT No: 1861620 API No: 50-029-21652-01 SEe 12, T11 N. R14E BP Exploration (Alas ka) · TREE:' W8..lHEAD= ACTUATOR: KB. 8..E:V : SF. 8..E:V : KOp: IIt1ax Angle: Datum MD: Datum lVD: 6" I\Ik:E:VOY I\Ik:E:VOY OTIS 72.4' 36.5' 1775' 96 @ 12214' 10404' 8800' 55 ES: WELl. EXCEEDS 70" @ 9249' I I 5-1/2" LNR, 17#, L-80, .0232 bpf, 10: 4J~92" ÆRFORA TtON 5UM1IIIARY REF lOG: SWS CNL 05/27/01 ANGLE AT TOP PERF: 87@ 10625' Note: Refer to Production DB SPF INTERvAL 6 10750 - 10825 4 10935 10960 11125 -11150 11440 - 11530 11590 - 11790 11840 - 12080 12180 - 12320 SIZE 2" 1-11/16" 1-11/16" 2" 2" 2" 2" 9308' TW SSR ID ~ 4.750" 9322' 9391' 5/01 5-1/2" MllLOUT WINDOW 10168' - 10173' 4 4 4 4 o o o o o o o 08/21/03 08/21/03 OS/28/01 05/28/01 05/28/01 05/28/01 COMMENTS ORIGINAL RNltlh CORRECTIONS CHlKAK em SIDETRACK JAF/KK PRUDHOE BAY UNIT W8..l: No: API No: 10 CORRECTION BÞ exploration (AlélŠka) 'IØ' fW op of bag bttm of bag middle of slips middle of pipes iddle of flow cross middle of blind/shears iddle of pipe/slips L.. . . Review of Sundry Application 307-205 BP Exploration (Alaska) Inc. Well Prudhoe Bay Unit G-25A Prudhoe Bay Field, Prudhoe Oil Pool AOGCC Permit 201-065 Requested Action: BP Exploration (Alaska) Inc. (BPXA) proposes to plug the existing well to prepare it for sidetracking. Recommendation: I recommend approval of BPXA's proposed actions Discussion: Well G-25A was originally drilled and completed, as a sidetrack of the existing well G- 25 in 2001. The well has produced at a high GOR and therefore had to compete for space in the processing facilities and generally only produces for a few days at a time. An attempt at sustaining production for a longer period of time was begun in February of 2007. Oil production was initially promising with a rate of about 700 BOPD but the GOR was approximately 60,000 scf/stb, In short order the production rate decreased to about 200 BOPD and the GOR rose to over 100,000 scf/stb. The well was shut in after about a month and a half of production and has remained idle since. Conclusion: Since the well is producing at a high GOR and is not competitive with other wells for processing facility space at can only produce for a few days a month and therefore is of limited value. Abandoning the existing wellbore and sidetracking the well again in an effort to find lower GOR production so that the well can be produced on a more consistent basis is a prudent decision. D.S.RObY#~ Reservoir En~ June 22, 2007 e - MICROFILMED 07/25/06 DO NOT PLACE ANY NEW MATERIAL UNDER THIS PAGE F:\LaserFiche\CvrPgs _ Inserts\Microfilm _ Marker. doc WELL LOG TRANSMITTAL ProActive Diagnostic Services, Inc. To: State of Alaska AOGCC 333 W. 7~Street Suite # 700 Anchorage, Alaska 99501 RE · Distribution - Final Print(s) The technical data listed below is being submitted herewith. Please acknowledge receipt by returning a signed copy of this transmittal letter to the attention of' Joe¥ Burton / Jeni Thompson ProActive Diagnostic Services, Inc. P. O. Box 1369 Stafford, TX 77497 BP Exploration (Alaska), Inc. Petrotechnical Data Center LR2-1 900 E. Benson Blvd, Anchorage, AK 99508 LOG DIGITAL MYLAR / BLUE LINE REPORT WELL DATE TYPE OR SEPIA PRINT[S) OR CD-ROM FILM COLOR Open Hole I I 1 Res. Eval. CH 1 I 1 G-25A 8-20-03 Mech. CH 1 Caliper Survey Signed' Print Name: ProActive Diagnostic Services, Inc., PO Box 1369 Stafford lx 77477 ?hon¢:(28j) 565-9055 Fax:(281) 565-1369 E-mail: pd$~mCmorylog.¢om WCbstt¢: www. mCmorylog.¢om S{ STATE OF ALASKA ,'(~ ALA h,~ OIL AND GAS CONSERVATION C ,v,MISSION REPORT OF SUNDRY WELL OPERATIONS 1. Operations Performed: Abanon[-1 SuspendF1 Operation ShutdownE] PerforateI Variance[-'[ Annuar Disposalr-~ After Casin~E] RepairWellr-1 Plu~l Perforations['] StimulateE] Time ExtensionD Other['-I Change Approved Program r'"] Pull Tubing r"] Perforate New Pool F~ Re-enter Suspended Well r-~ ADD PERFS 2. Operator 4. Current Well Class: 5. Permit to Ddll Number: Name: BP Exploration (Alaska), Inc. Development I Exploratory[~ 201-065 3. Address: P.O. Box 196612 6. APl Number Anchorage, Ak 99519-6612 Stratigraphic D Service r-] 50-029-21652-01-00 7. KB Elevation (ft): 9. Well Name and Number: 72.00 G-25A 8. Property Designation: 10. Field/Pool(s): ADL 028304 Prudhoe Bay Field ! Prudhoe Bay Oil Pool 11. Present Well Condition Summary: Total Depth measured 12391 feet true vertical 8949 feet Plugs (measured) Effective Depth measured 12326 feet Junk (measured) true vertical 8953 feet Casing Length Size MD TVD Burst Collapse Conductor 110' 20" 149' 149' 40K 520 Surface 2746' 13-3/8" 2785' 2685' 80K 2670 I ntermeidate 9688' 9-5/8" 9724' 8337' 80K 4760 Liner 707' 5-1/2" 9462'-10169' 8113'-8723' 80K 6280 Sidetrack Liner 3009' 3-3/16"x2-7/8" 9382'-12391' 8044'-8949' 80K, 10530 Perforation depth: Measured depth: Open Perfs 10625'-10750', 10935'-10960', 11125'-11150', 11440'-11530', Open Perfs 11590'-11790', 11840'-12080', 12180'-12320'. True vertical depth: Open Perfs 8912'-8916', 8926'-8932', 8959'-8963', 8968'-8976', Open Perfs 8978'-8979', 8978'-8968', 8963'-8953'. Tubing: ( size, grade, and measured depth) 4-1/2", 12.6#, L-80, TBG @ 9322'. 4-1/2", 12.6#, L-80, Tubing Tail @ 9457'. Packers & SSSV (type & measured depth) 9-5/8" x 4-1/2" TIW Packer @ 9322'. ... ,. .... ~"i" ~;: '"" 4-1/2" Otis SSSV Landing Nipple @ 2072'. 12. Stimulation or cement squeeze summary: "'" '~ ~ ....... '~" ' Intervals treated (measured): .... ... ....... ' " Treatment descriptions including volumes used and final pressure: ,.. 13 Representative Daily Averaqe Production or Injection Data OiI-Bbl Gas-Mcr Water-Bbl Casing Pressure Tubing Pressure Prior to well operation: SHUT-IN Subsequent to operation: 1259 35413 40 736 14. Attachments: 15. Well Class after proposed work: ExploratoryE] DevelopmentB ServiceD Copies of Logs and Surveys run __ 16. Well Status after proposed work: OilI Gasr"] WAG[~ GINJ[-"~ WIN Jr-'] WDSPL[~ Daily Report of Well Operations __X 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. ISundry Number or N/A if C.O. Exempt: Contact DeWayne R. Schnorr I N/A Printed Name DeVV. ayne R. Schnorr ,, , Title Techical Assistant Signature ~.,~¢~jz.~,~-~~.~~, G i hie^ b~, 564.5174 Date sept I-orm 1 u-4u4 Hevlsea z/zuu;~ G-25A DESCRIPTION OF WORK COMPLETED NRWO OPERATIONS 08~20~2003 PERFORATING' JEWELRY LOG--DEPTH CONTROL; PERFORATING 08/21/2003 PERFORATING: PERFORATING 08/25/2003 TESTEVENT--- BOPD' 926, BWPD' 22, rvlCFPD. 39,632, AL RATE' 0 08/20/03 EVENT SUMMARY CTU #5. COIL FLAG/ADD PERFS. RIH WITH WFD 1-11/16" MHA & PDS MEMORY GAMMA/CCL & 2.20" CARRIER AND LOG FROM 11300' TO 10000', THEN POOH. TIED IN WITH MGR/CNL DATED 27-MAY-01. TIED IN CORRECTION (-8 FT). RIH WITH WFD 1-11/16" MHA & 25' OF 2" OD 4 SPF PJ2006 HMX PERF GUNS & PERFORATE FROM 11,125'-11,150' AND POOH. RIH WITH GUN #2: 25' OF 2" OD 4 SPF PJ2006 HMX PERF GUNS & PERFORATE FROM 10,935'-10,960' AND POOH. 08/21/03 CTU #5 ADD PERFS CONTINUED FROM 08/20/03 WSR. PULLED OUT OF WELL AFTER FIRING FINAL PERF GUN. PUT WELL ON PRODUCTION TO LP HEADER. <<< JOB COMPLETED >>> 08/25/03 TESTEVENT --- BOPD' 926, BWPD' 22, NICFPD' 39,632, AL RATE' 0 FLUIDS PUMPED BBLS 141 50/50 METHANOL WATER 141 TOTAL ADD PERFS 08/20-21/2003 THE FOLLOWING INTERVALS WERE PERFORATED USING THE 2" POWERJET PJ2006 HMX GUN, LOADED @ 4 SPF, 60 DEGREE PHASING, RANDOM ORIENTATION. 10935' - 10960' 11125'- 11150' Page 1 Permit to Drill 2010650 DATA SUBMITTAL COMPLIANCE REPORT 61312003 Well Name/No. PRUDHOE BAY UNIT G-25A Operator BP EXPLORATION (ALASKA) INC MD 12391 f TVD 8949 ~'' Completion Dat 5/29/2001. ~ Completion Statu 1-OIL Current Status 1-OIL UIC N APl No. 50-029-21652-01-00 REQUIRED INFORMATION Mud Log N._~o Sample Nc) Directional Survey Nc) DATA INFORMATION Types Electric or Other Logs Run: Well Log Information: Log/ Data Digital Digital Type Media Fmt (data taken from Logs Portion of Master Well Data Maint) ! ~ Var LIS Verification I ED ~ Var LIS Verification · Interval Log Log Run OH I Dataset Name Scale Media No Start Stop CH Received Number I 10151 1 10182 9030 Comments -i 01 12400 Open 12/28/2001 ~ 12391 Open 4/19/2002 u1'0774 ,.~ 12350 Case 6/22/2001 ~t9-157 ~9030-12350 CH 6/15/2001 Directional Survey, Paper Copy OH 6/15/2001 MWD Survey, Digital Data CH 8/15/2001 Directional Survey, Paper Copy OH 8/15/2001 MWD Survey, Digital Data CH 6/14/2001 Directional Survey, Paper Copy OH 6/14/2001 MWD Survey, Digital Data 12320 OH 6/22/2001 ---9030-12320 BL, Sepia 12320 CH 6/22/2001 ~'~57 ~030-12320, Digital Data 10915 Case 9/23/2002 1~025~,'~oil flag il~.B' D ,C..,~ee Notes Directional Survey FINAL FINAL FINAL FINAL FINAL FINAL FINAL 9030 FINAL 9030 1 9713 MWD Survey Directional Survey MWD Survey Directional Survey MWD Survey ~-a,R~OM P/NEU ---1'O157 Well Cores/Samples Information: Name Start Interval Stop Sent Received Dataset Number Comments ADDITIONAL INFORMATION DATA SUBMITTAL COMPLIANCE REPORT 6/312003 Permit to Drill 2010650 Well Name/No. PRUDHOE BAY UNIT G-25A Operator BP EXPLORATION (ALASKA) INC MD 12391 TVD 8949 Well Cored? Y/~.~) Chips Received? Analysis R ~.c~.iv~.d ? Completion Dat 5/29/2001 Completion Statu 1-OIL Current Status 1-OIL Daily History Received? (~ N Formation Tops ~)/N APl No. 50-029-21652-01-00 UIC N Comments: Compliance Reviewed By: Date: STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS 1. Operations performed: Operation shutdown_ Stimulate _ Plugging _ Perforate _X ADD PER FS Pull tubing _ Alter casing _ Repair well _ Other _ 2. Name of Operator BP Exploration (Alaska), Inc. 3. Address P. O. Box 196612 Anchora~le, AK 99519-6612 4. Location of well at surface 2617' FNL, 1972' FEL, Sec. 12, T11N, R13E, UM At top of productive interval 2775' FNL, 2635' FEL, Sec. 07, T11N, R14E, UM At effective depth 1909' FNL, 3620' FEL, Sec. 07, T11N, R14E, UM At total depth 1857' FNL, 3658' FEL, Sec. 07, T11N, R14E, UM 5. Type of Well: Development __X Explorato~.__ Stratigraphic__ Service__ (asp's 658255, 5969032) ~sp~ 66251~ 596896~ (asp's 661505, 5969810) ~sp~ 661465, 5969861) 6. Datum elevation (DF or KB feet) RKB 72 feet 7. Unit or Property name Prudhoe Bay Unit 8. Well number G-25A 9. Permit number / approval number 201-065 10. APl number 50-029-21652-01 11. Field / Pool Prudhoe Bay Field / Prudhoe Bay Pool 12. Present well condition summary Total depth: measured true vertical Effective depth: measured true vertical Casing Length Conductor 110' Surface 2746' Intermediate 9688' Liner 707' Sidetrack Liner 3009' 12391 feet Plugs (measured) 8949 feet 12326 feet Junk (measured) 8953 feet Size Cemented Measured Depth True Vertical Depth 20" 72 cf Concrete 149' 149' 13-3/8" 3890 cf Permafrost 2785' 2685' 9-5/8" 590 cf Class 'G' 9724' 8337' 5-1/2" 484 cf Class 'G' 9462' - 10169' 8113' - 8723' 3-3/16' x 2-7/8" 146 cf Class 'G' 9382' - 12391' 8044' - 8949' Perforation depth: measured Open Perfs 10750'-10825', 11440'-11530', 11590'-11790', 11840'-12080', 12180'-12320' true vertical Open Perfs 8916'-8918', 8968'-8976', 8978'-8979', 8978'-8968', 8963'-8953' Tubing (size, grade, and measured depth) 4-1/2", 12.6#, L-80, TBG @ 9322' MD; 4-1/2", 12.6#, L-80, Tu~n~ ~,..~ l,~i'¢h Packers & SSSV (type & measured depth) 9-5/8" x 4-1/2" TIW Packer @ 9322'. 4-1/2" Otis SSSV Landing Nipple @ 2072' MD. ,.,,.,-,. 13. Stimulation or cement squeeze summary U~,I 0 ~ 2002 Intervals treated (measured) (see attached) Treatment description including volumes used and final pressure Alas Oil,& Gas G°ns. Commission Anchorage 14. OiI-Bbl Representative Daily Avera.qe Production or Iniection Data Gas-Mcr Water-Bbl Casing Pressure Prior to well operation Shut-In Subsequent to operation 09/21/2002 1592 32263 15. Attachments Copies of Logs and Surveys run _ Daily Report of Well Operations _ 17. I hereby certify that the foregoing is true. and correct to the best of my knowledge. DeWayne R. Schnt~rr 26 16. Status of well classification as: Oil __X Gas __ Suspended _ Service Tubing Pressure 822 Date September 23, ,2002. Prepared by DeWar/ne R. Schnorr 564-5174 Form 10-404 Rev 06/15/88 · SUBMIT IN DUPLICATE . G-25A DESCRIPTION OF WORK COMPLETED NRWO OPERATIONS O8/2O/2OO2 O9/O3/2OO2 09/04/2002 PERFORATING: DRIFT/TAG PERFORATING: PERFORATING PERFORATING: PERFORATING EVENT SUMMARY 08/20/02 DRIFTED W/2" DUMMY GUN SAT DOWN @ 10184' SLM, WORKED THROUGH AND TAGGED @ 10292' SLM. O9/O3/02 RIH WITH 2" JET SWIRL NOZZLE, 6' STINGER, DUAL CHECKS AND 2" ROLL ON CONNECTOR. CLEANED TO PBTD @ 12310', (HARD TAG). POOH. RUN MEM GR/CCL FOR COIL FLAG. FLAG PIPE @ 10900'. CORRECTED EOP AT FLAG = 10906'. RIH WITH GUN RUN #1 & PERFORATED INTERVAL 10800'- 10825'. OOH, ASF. RIH WITH 2ND GUN ASSEMBLY AND PERFORATED INTERVAL FROM 10800'- 10775'. OOH, ASF. RIH WITH 3RD GUN ASSEMBLY. O9/O4/O2 PERFORATED FROM 10775'-10750'. OOH, ASF. GUN INFORMATION: 2" HSD 2006 PJ, 6 SPPF, 60 DEGREE PHASING. RIH WITH 2" NOZZLE AND DISPLACED WELLBORE TO CRUDE. WELL NOT FLOWING. DSO NOTIFIED AND TIGER TANK LEFT IN PLACE. RD/MO. <<< JOB COMPLETED >>> Fluids Pumped BBLS 1 PRESSURE TEST SURFACE PRESSURE EQUIPMENT (1 TEST) 40 50/50 METHANOL WATER 497 2% KCL WATER 538 TOTAL ADD PERFS 09/03-04/2002 THE FOLLOWING INTERVALS WERE PERFORATED USING THE 3-3/8" POWERJET GUN, LOADED @ 6 SPF, 60 DEGREE PHASING, RANDOM ORIENTATION. 10750' - 10825' Page 1 WELL LOG TRAIVSMI AL ProActive Diagnostic Services, Inc. To: State of Alaska AOGCC 333 W. 7~St~eet Suite # 700 Anchorage, Alaska 99501 RE' Distribution - Final Print[s] The technical data listed below is being submitted herewith. Please acknowledge receipt by returning a signed copy of this transmittal letter to the attention of' Joey Burton/Jeni Thompson ProActive Diagnostic Services, Inc. P. O, Box 1369 Stafford, TX 77497 BP Exploration [Alaska), Inc. Petrotechnical Data Center LR2-1 900 E. Benson Blvd. Anchorage, AK 99508 LOG DIGITAL' MYLAR / BLUE LINE REpoRT... WELL DATE TYPE OR SEPIA PRINT[ S ] OR CD-ROM FILM COLOR Open Hole I I 1 ........... Res. Eval."cH .... I ...... I 1 '" , , G-25A 9/3/02 Mech. cH 1 , , ~ CaliPer SurVey .................. Signed' Print Name: Date' ProActive Diagnostic Services, Inc., 310 K Street Suite 200, Anchorage, AK 99501 ?hone:(90?) 245-895 ! ~'a×:(907) 245-$~$2 E-mail: Pdsanchorage~memoryjog.com Website: ww~. mCmo~.'log, com To: WELL LOG TRANSMITTAL State of Alaska Alaska Oil and Gas Conservation Comm. Attn.: Lisa Weepie 333 West 7th Avenue, Suite 100 Anchorage, Alaska 99501 January. 21, 2002 MWD Formation Evaluation Logs G-25A & G-25A PB1 & PB2 AK-MW-10156 G-25A: Digital Log Images: 50-029-21652-01 G-25A PBI: Digital Log Images: 50-029-21652-70 G-25A PB2: Distal Log Images: 50-029-21652-71 1 CD Rom 1 CiD Rom 1 CD Rom PLEASE ACKNOWLEDGE RECEIPT BY' SIGNING AND iR'ETURNIN'G THE ATTACHED COPIES OF THE TRANSMITTAL LETTER TO THE ATTENTION' OF: Sperry-Sun Drilling Services Attn: Jim Galvin 6900 Arctic Blvd. Anchorage, Alaska 99518 BP Exploration (.Alaska) Inc. Petro-technical Data Center, LR2-1 900 E. iBenson Blvd. Anchorage, Alaska 99508 RECEIVED 20022 ,-~i'" :.. ',9 Ataska Oil & Gas Co~s. Commissior~ Anchorage Signed~~ ~ ! WELL LOG TRANSMITI'AL To~ State of Alaska Alaska Oil and Gas Conservation Comm. Attn.' Lisa Weepie 333 West 7~' Avenue, Suite 100 Anchorage, Alaska RE: MWD Formation Evaluation Logs G-25A, AK-MW- 10156 December 21,2001 1 LDWG formatted Disc with verification listing. API#: 50-029-21652-01 PLEASE ACKNOWLEDGE RECEIPT BY SIGNING ANi) RETURNING A COPY OF THE TRANSMITTAL LETTER TO THE ATTENTION OF: Sperry-Sun Drilling Services Attn: Jim Galvin 6900 Arctic Blvd. Anchorage, Alaska 99518 BP Exploration (Alaska) Inc. Petro-Technical Data Cemer LR2-1 900 iE. Benson Blvd. Anchorage, Alaska 99508 Date: RE£.,EiVED WiELL LOG TRANSMITTAL To: State of Alaska Alaska Oil and Gas Conservation Comm. Attn.' Lisa Weepie 333 West 7th Avenue, Suite 100 Anchorage, Alaska December 21,2001 RE: MWD Formation Evaluation Logs G-25A PB2, AK-MW-10156 1 LDWG formatted Disc with verification listing. API#: 50-029-21652-71 PLEASE ACKNOWLEI)GE RECEIPT BY SIGNING ANI) RETURNING. A COPY OF THE TRANSMITTAL LETTER TO THE ATTENTION OF: Sperry-Sun Drilling Services Attn: Jim Galvin 6900 Arctic Blvd. Anchorage, Alaska 99518 iBP Exploration (Alaska) Inc. Petro-Technical Data Center LR2-1 900 E. Benson Blvd. Anchorage, Alaska 99508 Date: WELL LOG TRANSMITTAL To.' State of Alaska Alaska Oil and Gas Conservation Comm. Attn.: Lisa Weepie 333 West 7th Avenue, Suite 100 Anchorage, Alaska December 21,2001 RE: MWD Formation Evaluation Logs G-25A PB1, AK-MW- 10156 1 LDWG formatted Disc with verification listing. API#: 50-029-21652-70 PLEASE ACKNOWLEDGE RECEIPT BY SIGNING AND RETURNING A COPY OF THE TRANSMITTAL LETTER TO THE ATTENTION' OF: Sperry-Sun Drilling Services Attn: Jim Galvin 6900 Arctic Blvd. Anchorage, Alaska 99518 BP Exploration (Alaska) Inc. Petro-Technical Data Cemer LR2-1 900 E. Benson Blvd. Anchorage, Alaska 99508 Date: RECEIVED DEC 2 8 2001 ~Jaska Oil & Gas Co~s. A,nc~orsge 07/23/01 11:12 FAX 907 564 5193 BI' EXPLORATI ON ~] OOl. TO: COMPANY: LOCATION: Steve Davies Alaska OI! & Gas Conservation Commission __ Anchorage FAX #: 276-7542 FROM: LOCATION: Terrie Hubble I ALASKA DRILLING & WELLS ANCHORAGE, ALASKA PAGES TO FOLLOW: 2 ! COMMENTS: Hi' Steve, PHONE #: DATE: 564-4628 07-23-01 I don't understand why this Is happening. One time I'll print the report and get it all, the next time I'll only get part. I'll try to watch for this even more carefully. But, thanks for catching it! Terrie RECEIVED JUL 2 3 2001 Alasl(a Oil & Gas Oons. OollilltlS~ Anchorage IF YOU DO NOT RECEIVE ALL PAGES, OR HAVE ANY PROBLEMS, PLEASE CALL THE FOLLOWING NUMBER: (907) 564-4628 'II~ STATE Of ALASKA ALAS oIL AND GAS CONSERVATION COM ~dSlON WELL COMPLETION OR RECOMPLETION REPORT AND LOG 1. Status of Well Classification of Service Well [] Oil [] Gas [] Suspended [] Abandoned [] Service [] TSUSP 2. Name of Operator 7. Permit Number BP Exploration (Alaska) Inc. 201-065 3. Address 8. APl Number P.O. Box 196612, Anchorage, Alaska 99519-6612 50- 029-21652-01 4. Location of well at surface !~'~,~'P-LE'ri¢~,,~-~ ~ t 9. Unit or Lease Name 2617' SNL, 1973' WEL, SEC. 12, T11N, R13E, UM ! L,\TE t_~,j~_' I.~. ~ Prudhoe Bay Unit At top of productive interval ! ~_2.~,.C._.>jI ~ !} 2775' SNL, 2282' EWL, SEC. 07, T11N, R14E, UM { '~;'~.¢-,'.IFI~:~ ,~ . 10. Well Number At total depth .. ~ G-25A 1857' SNL, 1254' EWL, SEC. 07, T11 N, R14E, UM ,-_~ __..,.(Z)_....._ ........ ,.i ,z 5. Elevation in feet (indicate KB, DF, etc.) 6. Lease Designation and Se¢i~t~ No: ...... ~; , 11. Field and Pool Prudhoe Bay Field / Prudhoe Bay Pool KBE = 72.40 ADL 028304 12. Date Spudded 5/11/2001 110' Date T'D' Reached 114' Date c°mp'' Susp'' °r Aband'5/26/2001 5/20/2001 115' water depth' if °fish°re N/A MSL 116' N°' °f c°mpleti°ns One 17. Total Depth (MD+TVD) 118. Plug Back Depth (MD+TVD) 119. Directional Survey 1 20. Depth where SSSV setI 21. Thickness of Permafrost 12391 8949 FTI 12326 8953 FTI [] Yes [] NoI (Nipple) 2O74' MDI 1900' (Approx.) 122. Type Electric or Other Logs Run CNL, GR 23. CASINGr LINER AND CEMENTING RECORD CASING SE'I-rING DEPTH HOLE SIZE WT. PER FT. GRADE TOP BOTTOM SIZE CEMENTING RECORD AMOUNT PULLED 20" Insulated Conductor Surface 110' 26" 9 cu yds Concrete 13-3/8" 72# L-80 / S-95 39' 2785' 17-1/2" 3890 cu ft Permafrost 9-5/8" 47# L-80 36' 9724' 12-1/4" 590 cu ft Class 'G' 5-1/2" 17# L-80 9462' 10169' 8-1/2" 484 cu ft Class 'G' 3-3/16"x 2-7/8" 6.2# / 6.16# L'80 9382' 12391' 3-3/4" 146 CU ft Class 'G' 24. Perforations open to Production (MD+TVD of Top and 25. TUBING RECORD Bottom and interval, size and number) SIZE DEPTH SET (MD) PACKER SET (MD) 2" Gun Diameter, 4 spf 4-1/2", 12.6#, L-80 9465' 9322' MD TVD MD TVD 11440' - 11530' 8968' - 8976' 11590' - 11790' 8978' - 8979' 26. AC~D, FRACTURE, CEMENT SQUEEZE, ETC. 11840' - 12080' 8978' - 8968' DEPTH INTERVAL (MD) AMOUNT & KIND OF MATERIAL USED 12180' - 12320' 8963' - 8953' 2000' Freeze Protect with 30 Bbls of 60/40 MeOH , , , , ,, , , ,, , , , 27. PRODUCTION TEST Date First Production Method of Operation (Flowing, gas lift, etc.) June 5, 2001 Flowing Date of Test Hours Tested PRODUCTION FOR OIL'BBL GAS'MCF WATER-BBL CHOKE SIZE I GAS-OIL RATIO 6/13/2001 4 TEST PERIOD 700 8746 15 94.18I 1 2495 Flow Tubing Casing Pressure CALCULATED OIL'BBL GAS'MCF WATER-BBL OIL GRAVITY'API (CORR) Press. 24-Hour RATE 26.2 28. CORE DATA Brief description of lithology, porosity, fractures, apparent dips and presence of oil, gas or water. Submit core chips. EC[IYED JUL 1 ;3 2001 Alaska 0/! & Gas Cons. Commission ORI6INAL ,. Form 10-407 Rev. 07-01-80 G ~ Submit In Duplicate 29. Marker Name 21N 21P Zone 1 B / 14N 14P 31. List of Attachments: Geologic Markers Measured Depth 10414' 10424' 10978' 11 O78' Summary of Daily Drilli-~g Re True Vertical Depth 8877' 8881' 8936' 8953' )orts, Surveys 30. Formation Tests Include interval tested, pressure data, all fluids recovered and gravity, GOR, and time of each phase. RECEIVED JUL 1 2.001 Alaska 0il & Gas Co'ns. Commission Anchorage 32. I hereby certify that the foregoing is true and correct to the best of my knowledge Signed TerrieHubble ~~L~~~.' Title Technical Assistan, Date G-25A 201-065 Well Number Permit No. / A,~..~roval No. Prepared By Name/Number: Terrie Hubble, 564-4628 INSTRUCTIONS GENERAL; This form is designed for submitting a complete and correct well completion report and Icg on all types of lands and leases in Alaska. ITEta 1: Classification of Service Wells: Gas injection, water injection, steam injection, air injection, salt water disposal, water supply for injection, observation, injection for in-situ combustion. ITEM IS: Indicate which elevation is used as reference (where not otherwise shown) for depth measurements given in other spaces on this form and in any attachments. ITEM 16 AND 24: If this well is completed for separate production from more than one interval (multiple completion), so state in item 16, and in item 24 show the producing intervals for only the interval reported in item 27. Submit a separate form for each additional interval to be separately produced, showing the data pertinent to such interval. ITEM 21: Indicate whether from ground level (GL) or other elevation (DF, KB, etc.). ITEM 23: Attached supplemental records for this well should show the details of any multiple stage cementing and the location of the cementing tool. ITEM 27: Method of Operation: Flowing, Gas Lift, Rod Pump, Hydraulic Pump, Submersible, Water Injection, Gas Injection, Shut-In, Other-explain. ITEM 28-' If no cores taken, indicate 'none'. Form 10-407 Rev. 07-01-80 BP EXPLORATION Page 1 of 12 Operations Summary Report Legal Well Name: G-25 Common Well Name: G-25a Spud Date: 10/1/1986 Event Name: REENTER+COMPLETE Start: 5/9/2001 End: Contractor Name: NORDIC CALISTA Rig Release: Rig Name: NORDIC 1 Rig Number: Date From - To Hours Activity Code NPT Phase Description of Operations 5/9/2001 03:00 - 00:00 21.00 MOB X WAIT PRE Nippled down on G-29A, can't move to G-25, waiting on rig down of sqz eq. and pad prep. 5/10/2001 00:00 - 02:00 2.00 MOB X WAIT PRE Standby on well prep. Off standby at 02:00. 02:00 - 03:30 1.50 MOB P PRE Move RIG to G-25A from G-29A. MIRU. Nipple up to top of swab valve. ACCEPT RIG ON G-25A AT 03:30 HRS, 05-10-01. 03:00 - 07:00 4.00 MOB P PRE Continue rig up operations. Spot green tank and tiger tank for gas venting. 07:00 - 12:00 5.00 BOPSUR P DECOMP BOP testing for rig up on new well. Witness by State of Alaska, Chuck Sheve. 12:00 - 13:30 1.50 BOPSUR P DECOMP Leaking wing valve, wait on grease crew. Grease swab and cycle. Grease master and wing, no cycle. Bleed down flowline pressure to tiger tank. 13:30 - 15:15 1.75 BOPSUR P DECOMP Resume BOP test. 15:15 - 16:30 1.25 STWHIP P WEXlT BOP test completed ok. Test inner reel valve. Rehead coil, change packoffs. 16:30 - 17:00 0.50 STWHIP P WEXlT Make up BHA #1, to mill XN nipple and window. 17:00-18:45 1.75 STWHIP P WEXlT RIHwithBHA#1. Tag XN nipple at 9407 ft. Correct to 9414 ft BKB. 18:45 - 19:30 0.75 S'I'WHIP P WEXIT Mill out XN nipple to 3.80". [15 min.], Back ream and ream down several times to get rid of motor work. 19:30 - 19:40 0.17 STWHIP P WEXIT RIH tag Whipstock at 10168 ft. Correct depth to 10,169 ft. 19:40 - 22:40 3.00 STVVHIP P WEXIT Mill window with 3.80" diamond mill. 2.5 BPM, 1400 psi, Several stalls at start. Mill 10169 - 10171.2 ft. 22:40 - 00:00 1.33 STVVHIP P WEXIT Milling window from 10171.2 -10172.7 ft. 2.6 bpm, 1650 psi. ~l 5/11/2001 00:00 - 01:00 1.00 STWHIP P WEXIT .Mill window to 10173 ft. Looks like exited casing. Mill slow to 10175 ft to work string reamer in window. 01:00 - 01:15 0.25 STWHIP P WEXIT Safety Meeting, Review all procedures of mud swap with Peak and crew 01:15 - 02:30 1.25 STVVHIP P WEXIT Mill formation to 10,182 ft. Slow milling formation. Swap to FIoPro used mud system. Dispose of Biozan water. 02:30 - 05:00 2.50 STVVHIP P WEXIT Ream window area several times. 0.2 - 0.5 FPM up and down. 2.5 bpm, 2550 psi. full returns. FIoPro system in place. No motor work thu window. RIH with no pump, no wt loss thru window. 05:00 - 06:40 1.67 STWHIP P WEXIT POOH. Flag CT at 10,000 ft EOP. POOH. 06:40 - 08:00 1.33 STWHIP P WEXIT Tag up at surface. Rig down milling BHA, pick up build section BHA. Mill and string reamer guaged at 3.77". 08:00 - 08:15 0.25 DRILL P PROD1 RIH with BHA #2, first drilling BHA to drill build section. RIH with 2.3 deg short radius motor and Smith M09 bit. 08:15 - 08:45 0.50 DRILL N SF^L PROD1 Shallow hole test of MWD eq at 500'. MWD works fine. Leak at lubricator o ring at rig floor. Pull back to surface, break off lubricator, change o ring 08:45 '- 10:10 1.42 DRILL P PROD1 RIH with BHA #2. 10:10 - 10:40 0.50 DRILL P PROD1 Fire and evacuation drill. 10:40 - 10:50 0.17 DRILL P PROD1 Resume RIH. 10:50 - 10:55 0.08 DRILL P PROD1 Stop at EOP flag from last run. Found flag at 10054.5'. Should be 10066.35' (10000' EOP flag + BHA length of 66.35') Make +11.5' correction. Kick on pumps, to find tool face. 10:55 - 12:00 1.08 DRILL P PROD1 Ran through the window slick with tool face of 103R. Tagged bottom on depth to mill run at 10182'. Kicked on the pumps, pumping 2.7 bpm in, 1 for 1 returns, park at 10178', orient arount to 34R, begin drilling at 40 fph, with only 100 lbs motor Printed: 5/29/2001 1:35:32 PM · , BP EXPLORATION Page 2 of 12 Operations Summar Report Legal Well Name: G-25 Common Well Name: G-25a Spud Date: 10/1/1986 Event Name: REENTER+COMPLETE Start: 5/9/2001 End: Contractor Name: NORDIC CALISTA Rig Release: Rig Name: NORDIC 1 Rig Number: Date From - To Hours Activity Code NPT Phase Description of Operations 5/11/2001 10:55- 12:00 1.08 DRILL P PROD1 work. 12:00 - 12:30 0.50 DRILL P PROD1 10228', 12:00 update. Drilling 62 deg R, 2.6 bpm, 1 for 1 returns, 3400 psi, 82 fpm. 3250 psi free spin. 12:30 - 14:15 1.75 DRILL N DPRB PROD1 10241', Sperry MWD failed. Can't get pulses. POOH. Hung up at window. Orient around blind to attempt to get through window. Took 6 clicks, still couldn't get through the window. Took 3 clicks, pull up, still hung up. Only pulling 10klbs over. Not pulling max. Take 3 more clilcks, hung up again. Take 3 more clicks, hung up. Try 3 more clicks, hung up, pulled 60klbs, couldn't get through. Dropped down, pulled 70klbs, couldn't get through. Dropped down, kicked pumps on to 2.6 bpm. Pulled up, hung up. Tried at 1.0 bpm, hung up. Get 3 more clicks hung up coming up, can't RIH. Work free. Pull 80klbs, no good. Cointinue to work pipe. Hung up, can't pull up or down. Pull 90klbs multiple times. Can't get free. 14:15 - 15:15 1.00 DRILL N DPRB PROD1 Worked BHA free. Try orienting around. Taking 2 clicks, then pulling up to window. Holding 2000 psi on coil when picking up to lock orienter. Keep repeating until we try 360 deg in 40 deg increments. 15:15 - 16:30 1.25 DRILL N DPRB PROD1 MWD started working again. TF now reading 78L, attempt to orient around to 45 R. Pick up at 62 R. Tag up. Continue to work pipe. 16:30 - 17:30 1.00 DRILL N DPRB PROD1 Attempt to time mill back up through the window at 2'/hr. Starting at 10156.1' (Not corrected for ail the stretch, this is in the window). 17:30 - 19:00 1.50 DRILL N DPRB PROD1 Milling up at 10155.6', got several stalls at this depth (Note, not tied in due to stretch from working coil. This is the top of the whipstock however.) Continued time back reaming up to 10154.8 ft. PULLED FREE with 10K overpull. 19:00 - 21:00 2.00 DRILL N DFAL PROD1 POOH. Flag CT at 9700ft EOP. [ Rig down time for MWD failure.] 21:00 - 22:00 1.00 DRILL N DFAL PROD1 Change out BHA. Bit came out 0.20" UG. Gauge worn down from back reaming. M/U 3.80" taper mill, 3.80" string reamer, 1.0 deg motor and new MWD. [Rig down time.] 22:00 - 22:15 0.25 DRILL P PROD1 SAFETY MEETING, Review procedure / hazards for cutting CT and rehead. 22:15-23:00 0.75 DRILL P PROD1 Cut off 350 ft of CT. Rehead, pulltestand presstest. 23:00 - 00:00 1.00 DRILL N DFAL i PROD1 RIH with milling BHA to ream window. Shallow test MWD. [rig down time]. 5/12/2001 00:00 - 01:00 1.00 DRILL N DPRB PROD1 RIH with reaming BHA, Correct depth at flag. Orient TF to 35R. [rig down time]. 01:00 - 03:45 2.75 DRILL N DPRB PROD1 Ream window, correct depth to top window at first stall. [+6 ft]. Ream down at 2 FPH with 20R TF, 2.5 bpm, 3300 psi, Had motorwork from 10169-10172.5 ft.. 2 stalls total. Ream 10173 - 10183' clean. Back ream. 03:45 - 05:15 1.50 DRILL N DPRB PROD1 Ream down 80R TF. Very little motor work [50 psi]. Back ream. Ream down 120R TF. Very little motor work. Back ream. Ream down 20L TF. Llittle motor work [100 psi]. Back ream. Ream down 20R TF. No motor work. Back ream. ! Ream down 40R TF. No motor work. Ream down to 10185 ft. Printed: 5/29/2001 1:35:32 PM BP EXPLORATION Page 3 of 12 Operations Summa Report Legal Well Name: G-25 Common Well Name: G-25a Spud Date: 10/1/1986 Event Name: REENTER+COMPLETE Start: 5/9/2001 End: Contractor Name: NORDIC CALISTA Rig Release: Rig Name: NORDIC 1 Rig Number: Date From - To Hours Activity Code NPT Phase Description of Operations 5/12/2001 03:45 - 05:15 1.50 DRILL N DPRB PROD1 Hole clean. 05:15 - 06:40 1.42 DRILL N DPRB PROD1 POOH. 06:40 - 07:45 1.08 DRILL N DPRB PROD1 Tag up at surface. Lay down BHA #3, found mill and string reamer in guage at 3.80". Make up BHA #4 to continue drilling build section. 07:45 - 09:30 1.75 DRILL N DPRB PROD1 RIH with BHA ~ to resume drilling build section, shallow hole test at 500' while RIH, passed ok. 09:30 - 09:50 0.33 DRILL N DPRB PROD1 Kick on pumps, check orientation. It is 37R. Drop pumps to minimum, run down through window and then back up with BHA. Able to run up and down with no problems. 09:50 - 10:25 0.58 DRILL N DPRB PROD1 Log tie in pass accross gamma spike from RA tag at 10179' ELMD. Make +13' correction. 10:25 - 12:30 2.08 DRILL P PROD1 Tag at 10244.5', pick up orient 2 clicks, begin drilling at 2.5 bpm, 1 for 1 returns. 3300 psi. Very grabby and difficult to get to drill. Geologist reports both 30% Chert and some pyrite in last cutting sample. 12:30 - 14:00 1.50 DRILL N DFAL PROD1 10264', MWD tool failed again. CTP = 3900 psi. Same symptoms as yesterday. POOH to change out tool. Pulled through window blind with no problems. Tried cycling tool in casing, couldn't get any pulses. Continue to POH. 14:00 - 16:15 2.25 DRILL N DFAL PROD1 Tag up at surface, change out MWD. Found a couple of broken teeth on face of bit. Found severe scoring on body of bit behind cutter surfaces. Scoring was so bad it removed all pipe wrench marks and serial numbers. Also found motor untorqued, and about to come apart. Order new motor from deadhorse. 16:15 - 18:05 1.83 DRILL N DFAL PROD1 RIH with BHA #5, 2.3 deg short radius motor with tri cone bit. Shallow hole test at 500', pumping at 2.5 bpm, CTP = 3150. this is. significantly lower than on the last run. 18:05 - 18:20 0.25 DRILL N DFAL PROD1 Orienting to run through window. Orientation 28 R, Add 10', Run down through window. No problems RIH. 18:20 - 18:45 0.42 DRILL N DFAL PROD1 Log tie in accross PA, tag in whipstock anchor. Pumping 2.5 bpm, ctp 3400 psi free spin. Add 5 ft to CTD. 18:45-21:30 2.75 DRILL P PROD1 Drilling, TF=70R. Slow drilling, ROP=20-30FPH, 2.5bpm, 3400 psi. Drilled to 10,303 ft. 21:30 - 00:00 2.50 DRILL P PROD1 Drilling, TF = 90R, ROP = 30-60 FPH. 2.5 bpm, 3400 psi. Drilled to 10,381 ft. Total of 4 hours drilling, bit on bottom. Starting to stall. Ready to pull for bit. Total of 4 drilling hours on bit. 5/13/2001 00:00 - 01:30 1.50 DRILL P PROD1 POOH for bit. Total of 4 drilling hours on bit, 5 rotating hrs. Bit starting to stall. 01:30 - 01:45 0.25 DRILL P PROD1 Change out bit. [bit grade: 6-7-BT-A-6-I-LT] Check motor orientation - OK. 01:45 - 03:30 1.75 DRILL P PROD1 RIH with BHA #6, 2.3 deg SR motor and M09 bit #6. 03:30 - 03:45 0.25 DRILL P PROD1 Log tie-in, total correction of +12 ft CTD. 03:45 - 04:00 0.25 DRILL P PROD1 Orient TF and RIH. 04:00 - 04:30 0.50 DRILL P PROD1 Ream Undergauge hole from 10320 - 10381 ft. 04:30-05:20 0.83 DRILL P PROD1 Drilling, TF= 112R, 2.5 bpm, 3400 psi, ROP= 110 FPH. Incl = 62.5 deg. Drilled to 10,458 ft. 05:20 - 06:30 1.17 DRILL P PROD1 Pull to window and orient around. RIH. Hole was clean. 06:30 - 07:00 0.50 DRILL P PROD1 10458', 06:30 Update. Drilling ahead in sand 2.5 bpm, 3700 Printed: 5/29/2001 1:35:32 PM BP EXPLORATION Page 4 of 12 Operations Summa Report Legal Well Name: G-25 Common Well Name: G-25a Spud Date: 10/1/1986 Event Name: REENTER+COMPLETE Start: 5/9/2001 End: Contractor Name: NORDIC CALISTA Rig Release: Rig Name: NORDIC 1 Rig Number: Date From - To Hours Activity Code NPT Phase Description of Operations '5/13/2001 06:30 - 07:00 0.50 DRILL 3 PROD1 3si, 1 for 1 returns. 07:00 - 07:20 0.33 DRILL 3 PROD1 Orient 1 click. 07:20 - 09:00 1.67 DRILL 3 PROD1 10525', return to drilling. 09:00 - 11:40 2.67 DRILL 3 PROD1 10546', 09:00 update. Drilling ahead, entering 14N shale. ReP down to 15 fph. 11:40 - 12:05 0.42 DRILL 3 PROD1 10600', short trip to window. Clean pickup off bottom at 37klbs. 12:05 - 15:00 2.92 DRILL ~ PROD1 Resume drilling, 2.5 bpm, 3600 psi, 1 for 1 returns. Land hole at 10700', Inc=77 deg. 15:00 - 16:00 1.00 DRILL 3 PROD1 10700', Wiper trip. 16:00 - 17:30 1.50 DRILL 3 PROD1 Orienting. Having difficulty getting clicks in build section, having to pick back up and orient just below shoe. 17:30 - 18:15 0.75 DRILL P PROD1 On bottom, BHA flopped around, while trying to get a click, got a heavy pickup. Make wiper trip to shoe. Draggy up through shales. Popped free at 10550'. Need to watch the shales. Clean while RIH. 18:15 - 19:15 1.00 DRILL P PROD1 Back on bottom, tool face 45R while RIH. Tagged bottom and it flopped around to 103R. Pick back up to vertial section of hole to orient. 19:15 - 22:00 2.75 DRILL P PROD1 Drilling, TF = 35R. 3400 psi, 2.4 bpm. Drill to 10720 ft. Orient. Drilling, TF = 80R. 3400 psi, 2.4 bpm. Drill to 10740 ft. Orient. Drilling, TF=100R. 3400 psi, 2.4 bpm. Drill to 10781 ft. Well landed at 10,781 ft, 8897ft TVDSS, 90.0 deg Incl. 22:00 - 00:00 2.00 DRILL P PROD1 POOH for less bend motor. 10K overpull in shale at 10600 ft. 5/14/2001 00:00 - 00:45 0.75 DRILL P PROD1 CIO MWD, remove shock sub, M/U 1.1 deg motor and DS49 bit #7 [used] 00:45 - 02:30 1.75 DRILL ~P PROD1 RIH with BHA #7, Shallow test Sperry tools. RIH. 02:30 - 03:00 0.50 DRILL P PROD1 Log tie-in with RA tag at 10,179 ft. +12 ft CTD. 03:00 - 04:10 1.17 DRILL P PROD1 RIH, ream shales from 10520 - 10640 ft. RIH. 04:10 - 04:30 0.33 DRILL P PROD1 Orient TF. 04:30 - 05:15 0.75 DRILL P PROD1 Drilling, TF -- 115R, 50 fph, 2.4 bpm, 3400 psi. Drilled to 10813 ft. 05:15 - 06:30 1.25 DRILL P PROD1 Attempt to Orient TF. Tried several times near bottom with no success. 06:30 - 07:45 1.25 DRILL P PROD1 10781', resume drilling, 2.4 bpm, 3700 psi, TF 123R, 1 for 1 returns. 07:45 - 08:00 0.25 DRILL P PROD1 Orienting in horizontal section of hole. Getting every other click on orienter. Begining mud swap. 08:00 - 08:45 0.75 DRILL P PROD1 10860', resume drilling 08:45 - 09:05 0.33 DRILL P PROD1 New mud around, free spin 3000 psi. Lost several hundred psi in friction with new mud. Catch 2 clicks, resume drilling 09:05 - 11:30 2.42 DRILL P PROD1 10901', Short trip to shoe. Overpull at 10650', Had to backream up through at 10 fpm, seeing some overpulls, not much motor work. RIH tagged up at 10530', had to work and ream back down. Made 3 trips through interval at a tool face of 45R and finally cleaned it up. 11:30 - 15:30 4.00 DRILL P PROD1 10901', Resume drilling. 2.5 bpm, 3600 psi, 1 for 1 returns, 62 L TF, 80 fph. 15:30 - 16:30 1.00 DRILL P PROD1 11041', wiper trip to shoe. Small pull at 10550', nothing compared to what we had this morning. Printed: 5/29/2001 1:35:32 PM BP EXPLORATION Page 5 of 12 Operations Summa Report Legal Well Name: G-25 Common Well Name: G-25a Spud Date: 10/1/1986 Event Name: REENTER+COMPLETE Start: 5/9/2001 End: Contractor Name: NORDIC CALISTA Rig Release: Rig Name: NORDIC 1 Rig Number: Date From - To Hours Activity Code NPT Phase Description of Operations 5/14/2001 16:30 - 18:45 2.25~ DRILL P I PROD1 11041', Resume drilling. 2.6 bpm, 3500 psi, 1 for 1 returns. 50 fph. Drilled to 11,138 ft. 18:45-20:00 1.25 DRILL P PROD1 Drilling, TF=76R. 2.4bpm, 3000psi, Drilled to11,173 ft. Drilling, TF = 105R, 2.6 bpm, 3500 psi, Drilled to 11,200 ft. 20:00 - 21:00 1.00 DRILL P PROD1 Wiper trip to window. 21:00 - 22:30 1.50 DRILL P PROD1 Log Tie-in with RA marker. Log up and tie-in RA marker with OH log. +9ft. 22:30 - 23:30 1.00 DRILL P PROD1 RIH and ream shales. 23:30 - 23:50 0.33 DRILL P PROD1 Drilling, TF = 90R, 2.5 bpm, 3500 psi, Drilling sand finally. Drilled to 11,233 ft 23:50 - 00:00 0.17 DRILL P PROD1 Orient TF around. 5/15/2001 00:00 - 00:10 0.17 DRILL P PROD1 Orient TF 00:10 - 02:30 2.33 DRILL P PROD1 Drilling, TF = 80-90 R. 2.5 bpm, 3200 psi. Still drilling dirty sands at 60-70 APl GR. Drill to 11,350 ft. 02:30 - 05:15 2.75 DRILL P PROD1 Wiper trip to window. Easy up thru shales. RIH, unable to get past 10,580 ft. Unable to orient TF to 90R in high bend section. Pull to window and orient. RIH. Bounce past ledge at 10580 ft with 90R TF. RIH. 05:15 - 06:00 0.75 DRILL P PROD1 Drilling, TF = 35L, will build Incl back up to 95 deg. to drill 20' higher in vertical section. 2.4 bpm, 3200 psi. Full returns. Drill to 11,410 ft. 06:00 - 07:10 1.17 DRILL P PROD1 11440', 06:45 update. Drilling 2.4 bpm in, 1 for 1 returns. 3500 psi. Drilled to 11453 ft. 07:10 - 09:25 2.25 DRILL P PROD1 Short trip to shoe. Got significant motor work and drag at 10565'-10550' on way up. Clean above and below this point. RIH at 14R TF, and tagged up and got motor work at 10580'. Orient to 80R, could not get through trouble spot, Orient to 96R, (Hole drilled at 100R), RIH at high speed, pumps off, and tagged up at 10575', then popped through. 09:25 - 10:00 0.58 DRILL N DPRB PROD1 Tried RIH fast at 96R TF, bounce through bad spot at 10565', hang up at 10580'. Tried several times, can't get past 10580'. Back ream bad spot at 10575'-10550'. Need to PUH to window to change out DS swivel. 10:00 - 10:45 0.75 DRILL N RREP PROD1 Swivel leaking on DS reel. PUH to window to change out swivels. 10:45 - 13:15 2.50 DRILL N DPRB PROD1 RIH, can't get back through 10541'. TF=96R. Pick up to window and orient to 45L, RIH Flopped around to 167L, Tag and motor work at 10541', pick up get more clicks. Orient to 176R below window, RIH. Flopped arountto67R. Easily got past bad spots at 10541', 10565', tagged up at 10580'. Orient to 90R, can't get past 10580', orient to 160R, RIH tag up at 10580'. Try to get down repeatedly using all techniques. 13:15 - 15:15 2.00 DRILL N DPRB PROD1 POOH to pick up 2.3 deg motor to clean up sticky spot. 15:15 - 16:00 0.75 DRILL N DPRB PROD1 CIO MWD, M/U 2.3 deg SR motor and DS49 Bit #8 RR. 16:00-17:45 1.75 DRILL N DPRB PROD1 RIHwithBHA#8. Shallow test tools. RIH. 17:45 - 18:15 0.50 DRILL N DPRB PROD1 Thru window ok. RIH. Tag up at 10576' 18:15 - 19:15 1.00 DRILL N DPRB PROD1 Attempt to work past ledge. Work pump & pipe. TF:100R (same as original hole). Unable to get and deeper. 19:15 - 20:00 0.75 DRILL N DPRB PROD1 Drill ahead to 10629'. SUrvey at 10620' indicates incl:74 deg. Original hole inc: 77 deg. Sidetracked. 20:00 - 22:00 2.00 DRILL N DPRB PROD1 POOH to inside window to revise well plan. Printed: 5/29/2001 1:35:32 PM BP EXPLORATION Page 6 of 12 Operations Summary Report Legal Well Name: G-25 Common Well Name: G-25a Spud Date: 10/1/1986 Event Name: REENTER+COMPLETE Start: 5/9/2001 End: Contractor Name: NORDIC CALISTA Rig Release: !Rig Name: NORDIC 1 Rig Number: Date From - To Hours Activity Code NPT Phase Description of Operations 5/15/2001 22:00 - 22:45 0.75 DRILL N DPRB PROD1 Scratch the previous plans. Will attempt to continue drilling in sidetracked hole to land at 8925' TVD at 10820' MD and drill at the revised depth of 13P (25' TVD deeper). RIH and set down at 10290' 128R. Orient around to drilled TF below window. RIH thru 10290' at 77R. Ream hole 10290-628' slow and was clean to tagged TD, 83R. Official start of ST #2 is 10603' 22:45 - 00:00 1.25 DRILL N DPRB PROD1 Drilling 30-120'/hr 2.5/3500/89R to 10691' 5/16/2001 00:00 - 00:20 0.33 DRILL N DPRB PROD1 Orient around at TD of 10691' to begin build from 70 deg at bit 00:20 - 01:35 1.25 DRILL , N DPRB PROD1 Drilling 40-100'/hr to 10775' 2.4/3450/55R 01:35 - 01:55 0.33 DRILL N DPRB PROD1 Wiper to window 39K. 10-20K overpulls 10590-660' 01:55 - 02:15 0.33 DRILL N DPRB PROD1 Begin tie-in 02:15 - 02:50 0.58 DRILL N DPRB PROD1 Add 7.0', RIH. RIH 16'/min 66R from 10500-TD and hole was clean 02:50 - 05:30 2.67 DRILL N DPRB PROD1 Drilling 15-40'/hr 2.4/3450/66R from corr TD @ 10779' to 10850'. Est 90 deg at bit at 8924' TVD 05:30 - 05:50 0.33 DRILL N DPRB PROD1 Wiper to window. A few 10k overpulls thru 10520-690' 05:50 - 07:30 1.67 DRILL N DPRB PROD1 POOH for horizontal assy 07:30 - 08:00 0.50 DRILL N DPRB PROD1 Change out motor & bit. 08:00 - 09:45 1.75 DRILL N DPRB PROD1 RIH with 1.3 deg horizontal assy. SliT mwd. Good. COntinue in hole. 09:45 - 10:00 0.25 DRILL N DPRB PROD1 Log GR tie in at RA tag at 10180'. Add 3' correction (on top of 12'). Hole smooth to 10850'. Two minor bobbles at 10610' & 10630'. 10:00 - 11:00 1.00 DRILL N DPRB PROD1 Drill ahead. 2.4 bpm, 3400 psi, 50 FPH, TF:110R. Drill to 10880'. 11:00 - 11:30 0.50 DRILL N DPRB PROD1 Orient to 90L. 11:30-14:45 3.25 DRILL N DPRB PROD1 Drillahead. 2.4bpm, 3400psi, 40fph, TF:68L. 35k#up, 12k# down wt. Drill to 11001'. 14:45 - 15:45 1.00 DRILL N DPRB PROD1 Short trip to window. Hole smooth pulling out. Sat down at 10579, 10589'. Able to bump through both with 1.5 bpm & 40 fpm. Rest of hole smooth. 15:45 - 18:45 3.00 DRILL N DPRB PROD1 Drill ahead. 2.4 bpm, 3250 psi fs, 50-70 fph. TF: 90L. Formation still ratty. Drill to 11100' 18:45 - 20:35 1.83 DRILL N DPRB PROD1 Drilling 20-80'/hr in dirty sand and shale streaks slowly building angle searching for elusive sand. Drill to 11160' (8934' TVD) 2.6/3560/77L 20:35 - 21:10 0.58 DRILL N DPRB PROD1 Wiper to window-a few minor overpulls 21:10-21:25 0.25 DRILL N DPRB PROD1 Begin tie-in at 10215' '21:25 - 21:50 0.42 DRILL N DPRB PROD1 Add 11.0', RIH, clean. Start new mud 21:50 - 22:30 0.67 DRILL N DPRB PROD1 Drill 50'/hr avg from 11171-191' 2.5/3500/33L 22:30 - 22:50 0.33 DRILL N DPRB PROD1 Orient around 22:50 - 00:00 1.17 DRILL N DPRB PROD1 Drill to 11240' 2.6/3400/62L. Fin mud swap 5/17/2001 00:00- 00:35 0.58 DRILL N DPRB PROD1 Drilling 50'lhr2.613500151Lto 11275' (still 60-90APl) 00:35 - 00:50 0.25 DRILL N DPRB PROD1 Orient to right side 00:50 - 02:00 1.17 DRILL N DPRB PROD1 Drilling 60'/hr 2.6/3500/73R to 11316' 02:00 - 03:20 1.33 DRILL N DPRB PROD1 Wiper to window. Orient to drilled TF to get by 10590', hole clean 03:20 - 03:40 0.33 DRILL N DPRB PROD1 Orient to drill on right 03:40 - 04:35 0.92 DRILL N DPRB PROD1 Drilling 2.6/3550/100R to 11365' at 93 deg, 50-70 APl ratty sand 04:35 - 04:55 0.33 DRILL N DPRB PROD1 Orient around 04:55 - 05:30 0.58 DRILL N DPRB PROD1 Drilling 80'/hr 2.4/3200/90R to 11425' at 91 deg, GR trending Printed: 5/29/2001 1:35:32 PM BP EXPLORATION Page 7 of 12 Operations Summa Report Legal Well Name: G-25 Common Well Name: G-25a Spud Date: 10/1/1986 Event Name: REENTER+COMPLETE Start: 5/9/2001 End: Contractor Name: NORDIC CALISTA Rig Release: Rig Name: NORDIC 1 Rig Number: Date From - To Hours Activity Code NPT Phase Description of Operations 5/17/2001 04:55 - 05:30 0.58 DRILL N DPRB PROD1 lower 30-40 APl 05:30- 05:50 0.33 DRILL N DPRB PROD1 100'wiper 05:50 - 08:00 2.17 DRILL P PROD1 Drilling. Try to hold 100R, but TF keeps flopping around. Orient multiple times. Drill to 11513'. 08:00 - 09:30 1.50 DRILL P !PROD1 Short trip to window. Hole smooth out. Bobble at 10605' while RIH. TF:110R, 2.0 bpm, 30 FPH to get through. Rest of hole PROD1 smooth. 09:30 - 11:30 2.00 DRILL P Drilling ahead. 2.4 bpm, 3400 psi, 50-70 fph. TF:106R. Drill to 11600'. 11:30 - 13:45 2.25 DRILL P PROD1 Drilling ahead. 2.4 bpm, 34300 psi, 40-60 fph. TF:106R. Drill to 11700'. Still chasing elusive sand. Drilled several stringers of 40-50 APl rock. 13:45 - 16:30 2.75 DRILL P PROD1 Short trip to window. Hole smooth. RIH. Unable to get below 10590'. Work pipe & vary toolface. POOH to window to orient around. Try 45R thru 140R (again) Unable to make any progress past 10590'. Stalling & sitting down. i16:30- 18:30 2.00 DRILL N DPRB PROD1 POOH for motor. 18:30- 19:30 1.00 DRILL N DPRB PROD1 LD drilling BHA 19:30 - 00:00 4.50 DRILL P PROD1 Weekly BOPE test. AOGCC waived witness 5/18/2001 00:00 - 00:30 0.50 DRILL P PROD1 Fin BOPE test 00:30 - 01:30 1.00 DRILL P PROD1 Replace CTC. PT @ 34K. PT inner reel valve and CTC @ 3500 psi 01:30 - 02:30 1.00 DRILL N DPRB PROD1 MU BHA #10 (2.3 deg motor) 02:30 - 03:45 1.25 DRILL N DPRB PROD1 RIH. SHT and MWD not working (on and off). POOH. Rig downtime starts at 0330 hrs at 2500' 03:45 - 04:45 1.00 DRILL N DFAL PROD1 Change out MWDChange 04:45 - 06:45 2.00 DRILL N DPRB PROD1 RTIH. Off downtime @ 0500 hrs 06:45 -07:15 0.50 DRILL N DPRB PROD1 Add 11' correction atwindow. Orientto 110R. RIH. 07:15 - 11:00 3.75 DRILL N DPRB PROD1 Set down at 10609'. Stall & stack. PU. Drill ahead at 60 fph. Thru tight spot. Back ream and down ream several times with 110R TF. Sometimes we see motor work, sometimes not. Running more than 5 fpm results in a stall. Eventually cleaned up and able to RIH dry. Orient to 130L. Back ream. 11:00 - 13:00 2.00 DRILL N DPRB PROD1 POOH. 13:00- 13:15 0.25 DRILL N DPRB PROD1 LD BHA. 13:15 - 13:30 0.25 DRILL N PROD1 Hold PJSM to cut pipe. 13:30 - 14:00 0.50 DRILL N PROD1 RU & cut 200' coil from reel. 14:00 - 14:15 0.25 DRILL N DPRB PROD1 MU 1.3 motorwith DPI bi-center bit. 14:15- 16:00 1.75 DRILL N DPRB PROD1 RIH. SHT mwd good. Continue in hole. Add 12' at window. Continue in OH. 16:00- 18:00 2.00 DRILL N DF^L PROD1 Pin hole pipe at 10300'. Mark pipe. POOH. 698K running feet. Holed at 70% spot (we had just cut pipe to move this spot down hole). DT start at 1600 hrs 118:00 - 19:00 1.00 DRILL N DFAL !PROD1 LD drilling BHA 19:00 - 20:30 1.50 DRILL N DF^L i PROD1 VVO N2 20:30 - 22:30 2.00 DRILL N DFAL :PROD1 RU DS N2. PT. Displace CT to N2 22:30 - 23:30 1.00 DRILL N DF^L PROD1 Pull CT out of injector and pull onto reel 23:30- 23:45 0.25 DRILL N DFAL PROD1 Safety mtg re: reel changeout 23:45 - 00:00 0.25 DRILL N DF^L PROD1 Remove reel w/Peak 140T crane 5/19/2001 00:00 - 03:30 3.50 DRILL N DFAL PROD1 Pull out used reel and replace w/new HS90, 15700' 03:30 - 07:00 3.50 DRILL N DFAL PROD1 Prep reel and pull to floor. Stab CT 07:00 - 09:30 2.50 DRILL N DF^L PROD1 MU coil connector. Pump dart.58.7 bbls (calculated: 61.6). Pull & pressure test. Printed: 5/29/2001 1:35:32 PM BP EXPLORATION Page 8 of 12 Operations Summary Report Legal Well Name: G-25 Common Well Name: G-25a Spud Date: 10/1/1986 Event Name: REENTER+COMPLETE Start: 5/9/2001 End: Contractor Name: NORDIC CALISTA Rig Release: Rig Name: NORDIC 1 Rig Number: Date From - To Hours Activity Code NPT Phase Description of Operations 5/19/2001 09:30 - 10:00 0.50 DRILL N DFAL PROD1 Clean out choke manifold & hard line to flow back tank (found cement chunks in lines). FP same. 10:00 - 10:30 0.50 DRILL N DFAL PROD1 MU lateral BHA (1.3 mtrw/DPI bi bit) 10:30 - 12:30 2.00 DRILL N DFAL PROD1 RIH. SHT mwd good. Continue RIH. 12:30 - 13:00 0.50 DRILL N DFAL PROD1 Log grtie in from 10220'. Add 6' correction. TF:30R. 13:00 - 13:30 0.50 DRILL N DFAL PROD1 Orient to 110R. 2.4 bpm, 3200 psi fs, 15k dn, 35k# up wt. 13:30 - 14:30 1.00 DRILL P PROD1 Circulate in hole. Bobbles at 10535', 10585', & 10605'. Made through each with out slowing pump or having to PU. Several ratty spots to TD, but all cleaned up. Tag TD at 11712'. 14:30 - 15:15 0.75 DRILL P PROD1 Orient to 20R. 15:15 - 17:30 2.25 DRILL P PROD1 Drill ahead. 2.4/3200/60-80 fph. TF:20R. Drill to 11835' 17:30 - 18:50 1.33 DRILL ,P PROD1 Short trip to 10650'. 18:50 - 22:00 3.17 DRILL P PROD1 Drilling 2.5/3500/45R building angle to 95 deg looking for the elusive 13P. Drill to 11967' (8913' TVD) 22:00 - 23:00 1.00 DRILL P PROD1 Wiper to window 23:00 - 23:20 0.33 DRILL P PROD1 Tie-in, add 11.0' 23:20 - 23:50 0.50 DRILL P PROD1 RIH to 10500' at 22R. Orient to 75R and had a few minor bobbles thru 10560-645' at normal wiper speed 23:50 - 00:00 0.17 DRILL P PROD1 RIH 5/20/2001 00:00 - 00:40 0.67 DRILL P PROD1 RIH to 11974' CTD 00:40 - 01:10 0.50 DRILL P PROD1 Orient around 01:10 - 02:30 1.33 DRILL P PROD1 Drilling 2.5/3300/77L 02:30 - 03:30 1.00 DRILL N RREP PROD1 Drill to 12038'. Pump #1 blew packing. Switch to pump #2 and acts like broke a rod. PUH slow while WO backup pump or repairs on #1 filling w/charge 03:30 - 04:45 1.25 DRILL N RREP PROD1 Get pump #1 back on line. Continue PUH slow. Work on #2 04:45 - 06:00 1.25 DRILL N RREP PROD1 Assume problem is with bull wheel. WO backup pump from DS. POOH to window 06:00 - 08:00 2.00 DRILL N RREP PROD1 Park at window. Cir¢ at min. WO backup pump and replacement reel swivel 08:00 - 10:00 2.00 DRILL N RREP PROD1 Spot and RU Kitty Frac pump. Continue to repair #2. 10:00 - 12:00 2.00 DRILL N RREP PROD1 Install rebuilt swivel on reel. Unable to get it to rotate freely. #2 pump repaired. (recently installed pony rod too long) 12:00 - 16:00 4.00 DRILL N RREP PROD1 Rebuild original swivel at DS shop. Install same. 16:00 - 16:30 0.50 DRILL N RREP PROD1 Log GR tie in. Add 4' correction. 16:30 - 17:30 1.00 DRILL P PROD1 Orient to 110R. Had to POOH to 10200' to get clicks. 17:30 - 18:00 0.50 DRILL P PROD1 RIH. Entire build and horizontal very smooth. Tag TD at 12038' CTD 18:00- 18:30 0.50 DRILL P PROD1 Orient 18:30 - 19:30 1.00 DRILL P PROD1 Drilling 2.5/3500/77L. Got into some fast digging at 12060' (8900' TVD), but GR did not confirm as 13P 19:30 - 19:50 0.33 DRILL P PROD1 Orient around 19:50 - 20:20 0.50 DRILL P PROD1 Drilling from 12100', adding 200 bbls new mud. Holding 95 deg 20:20 - 20:40 0.33 DRILL P PROD1 Orient around to hold 91 deg. Looks like 12110' could be start of 13P 20:40 - 21:30 0.83 DRILL P PROD1 Drill 2.4/3200/90R to 12192' 21:30-22:40 1.17 DRILL P PROD1 Got out of sand at 12150'. Stacking. Wiper to window 22:40 - 22:50 0.17 DRILL P PROD1 Tie-in, add 5.0' 22:50 - 00:00 1.17 DRILL P PROD1 RIH to TD at 12192' CTD 5/21/2001 00:00 - 02:15 2.25 DRILL P PROD1 Drilling, try to hold 91 deg. 2.4/3350/60L 02:15 - 02:30 0.25 DRILL P PROD1 200' wiper from 12303' 02:30 - 02:45 0.25 DRILL P PROD1 Orient around · 02:45 - 03:10 0.42 DRILL P PROD1 Drilling 2.5/3400/100L to 12327'. Stacking, pulling heavy.' In Printed: 5/29/2001 1:35:32 PM BP EXPLORATION Page 9 of 12 Operations Summary Report Legal Well Name: G-25 Common Well Name: G-25a Spud Date: 10/1/1986 Event Name: REENTER+COMPLETE Start: 5/9/2001 End: ~Contractor Name: NORDIC CALISTA Rig Release: Rig Name: NORDIC 1 Rig Number: Date From - To Hours Activity Code NPT Phase Description of Operations 5/21/2001 02:45 - 03:10 0.42 DRILL ,P PROD1 and mostly out of sands. Can't push much further 03:10 - 04:20 1.17 DRILL ~P PROD1 Wiper to window 04:20 - 04:35 0.25 DRILL P PROD1 Tie-in, add 7.0' 04:35 - 05:45 1.17 DRILL P PROD1 RIH 05:45 - 06:00 0.25 DRILL P PROD1 Tag at 12328' CTD. Orient to right 06:00 - 06:45 0.75 DRILL P PROD1 Drilling 2.4/3470/90R Drill to 12390'. 06:45 - 07:00 0.25 DRILL P PROD1 Orient to 35R to "resume" climb. 07:00 - 08:00 1.00 DRILL P PROD1 Drilling 2.4/3460/30R. Drill to 12435'. Weight transfer getting very poor. 08:00 - 09:00 1.00 DRILL P PROD1 Wiper trip. Coil pressure dropped from 3400 psi to 2400 psi abruptly. 09:00 - 11:00 2.00 DRILL N DFAL PROD1 POOH to inspect BHA. 11:00 - 11:30 0.50 DRILL N DFAL PROD1 Stand back BHA. Left bit, motor, equalizing sub in hole. CSH pip broke at top of equalizing sub. 11:30 - 13:30 2.00 DRILL N DFAL PROD1 Wait on orders to proceed. 13:30 - 14:00 0.50 DRILL N DPRB PROD1 MU cementing BHA assy (cc, disc, 2 jts PH-6, nozzle) 14:00 - 16:15 2.25 DRILL N DPRB PROD1 RIH with nozzle. Run past "bad" section to 10650'. One bounce at 10,520'. Made it past without having to PU. 16:15- 18:30 2.25 DRILL N DPRB PROD1 Standby for water & dirty vac truck. RU cementers. 18:30 - 18:45 0.25 DRILL N DPRB PROD1 Safety mtg re: cmting 18:45 - 19:20 0.58 DRILL N DPRB PROD1 RIH to 11250' and hang out while DS prime up and PT 19:20 - 19:40 0.33 DRILL N DPRB PROD1 DS load CTw/15 bbls 17.0 ppg G cement 1.0/1680, 1.0/2050 19:40 - 20:00 0.33 DRILL N DPRB PROD1 Displace w/rig mud 2.613530 20:00 - 20:25 0.42 DRILL N DPRB PROD1 POOH from 11250' laying in cement to 10150' 1.0/2000 @ 70'/min 20:25-21:15 0.83 DRILL N DPRB PROD1 Park at 9400'. CircandWOC 21:15-21:25 0.17 DRILL N DPRB PROD1 RIH 21:25 - 21:35 0.17 DRILL N DPRB PROD1 Jet out cement from 10150-335' CTD. 21:35 - 23:30 1.92 DRILL N DPRB PROD1 POOH jetting to surface. Dump 30 bbls contam mud 23:30 - 00:00 0.50 DRILL N DPRB PROD1 OOH. LD cementing BHA 5/22/2001 00:00 - 02:00 2.00 DRILL N DPRB PROD1 Injector maintenance while WOC 02:00 - 03:00 1.00 DRILL N DPRB PROD1 MU building BHA (2.6 deg SR motor) 03:00-04:50 1.83 DRILL N DPRB PROD1 RIHw/BHA#13 04:50 - 05:20 0.50 DRILL N DPRB PROD1 Slite bobble thru window. Chk TF @ 40R. Log up from 10215'. Comp str is 2000 psi 05:20 - 05:40 0.33 DRILL N DPRB PROD1 Add 13.0', RIH. No tag by 10353', TF @ 77L. Orient to right 05:40 - 06:15 0.58 DRILL N DPRB PROD1 RIH looking for cement. Tagged at 10530' 110R. Drill thru shale looking for cement. Found top at 10540'. Drilled 5' to 10545'. 06:15 - 08:30 2.25 DRILL N DPRB PROD1 Circulate OOH. Noted some cement in btms up rtns. Cannot determine how much, looks like 1-2 bbls, but very strung out. 08:30 - 09:00 0.50 DRILL N DPRB PROD1 LD kick off assy. MU cementing assy. 09:00 - 11:00 2.00 DRILL N DPRB PROD1 RIH. Add 12' at window. RIH Tag at 10560'. RU cementers & spot Peak trucks. 11:00 - 11:15 0.25 DRILL N DPRB PROD1 Hold PJSM with Nordic, DS, Peak hands. Discuss pump schedule & procedures & HSE issues. 11:15 - 12:00 0.75 DRILL N DPRB PROD1 Pump 4 bbls 2% kcl, 2 bbls fresh. PT test to 4000 psi. Ok. Mix & pump 6 bbls Class G, 17# cement in tub. Pump 2 bbls fresh. Displace with mud using rig pump. Displace with 60 bbls mud. 3 bpm@2750 psi. 12:00- 12:15 0.25 DRILL N DPRB PROD1 Layin6bblscmtl:l from 10530'. POOH to safety at 9800'. CIP at 12:15. 12:15 - 13:15 1.00 DRILL N DPRB PROD1 Wait on cement to swap & settle. Printed: 5/29/2001 1:35:32 PM BP EXPLORATION Page lO of 12 Operations Summa Report Legal Well Name: G-25 Common Well Name: G-25a Spud Date: 10/1/1986 Event Name: REENTER+COMPLETE Start: 5/9/2001 End: Contractor Name: NORDIC CALISTA Rig Release: Rig Name: NORDIC 1 Rig Number: Date From - To Hours Activity Code NPT Phase Description of Operations 5/22/2001 13:15 - 13:50 0.58 DRILL N DPRB PROD1 Dress cement top to 10335'. 13:50 - 15:30 1.67 DRILL 'N DPRB PROD1 ~POOH, jetting to surface 15:30 - 15:50 0.33 DRILL N DPRB PROD1 Park at 2800' and conduct evacuation drill based on H2S release, discuss 15:50 - 16:20 0.50' DRILL N DPRB PROD1 Resume POOH 16:20 - 16:50 0.50 DRILL N DPRB PROD1 LD cementing BHA 16:50 - 23:30 6.67 DRILL N DPRB PROD1 Weekly BOPE test while WOC. Witnessing waived by AOGCC rep John Crisp. 23:30 - 00:00 0.50 DRILL N DPRB PROD1 PJSM Review plans and procedures for kickoff. 5/23/2001 00:00 - 00:30 0.50 DRILL N DPRB PROD1 P/U build section BHA #14 (2.6 SR motor 64.17') 00:30 - 02:30 2.00 DRILL N DPRB PROD1 TIH. Shallow test tools. Stop at 10100' make preliminary correction of +12. Went through window at 120R TF at rain rate without problem (small bobble). TIH to 10220'. 02:30 - 02:45 0.25 DRILL N DPRB PROD1 Log tie-in at 10179'. No correction. 02:45 - 04:00 1.25 DRILL N DPRB PROD1 TIH. Tagged hard cement at 10350'. Orient TF to 80R. Begin time drilling kick-off. 2.4~2.4 bpm 42-4400 psi. to 10354. 04:00 - 06:15 2.25 DRILL N DPRB PROD1 Drill build section to 10450' 2.5/3560/6oR 06:15 - 08:00 1.75 DRILL N DPRB PROD1 Start new mud at 10450' 2.5/3860/65R. Drill to 10503' 08:00 - 08:50 0.83 DRILL N 'DPRB PROD1 Orient one click. Had to go to window 08:50 - 10:50 2.00 DRILL N DPRB PROD1 Drill ahead and land at 10590' (8839' 'I'VD). Continue right turn and drill to 10650' 10:50 - 11:30 0.67 DRILL N DPRB PROD1 Wiper to window before POOH. Got bit stuck at 10500'. Pull free. RIIH to TD. POOH, clean to window with two blue lite specials 11:30 - 13:00 1.50 DRILL N DPRB PROD1 POOH for lateral assy 13:00- 14:00 1.00 DRILL N DPRB PROD1 LD build assy. MU lateral assy 14:00 - 15:40 1.67 DRILL N DPRB PROD1 RIH w/BHA #15 (1.3 deg motor) 15:40 - 15:50 0.17 DRILL N DPRB PROD1 RIH clean thru window. Add 12.0'. Log tie-in from 10210'-no corr. 2.5/3500/21R 15:50- 16:00 0.17 DRILL N DPRB PROD1 Orient 16:00 - 16:15 0.25 DRILL N DPRB PROD1 RIH to tag at 10658' 16:15 - 16:30 0.25 DRILL N DPRB PROD1 Orient from 4R 16:30 - 18:00 1.50 DRILL N DPRB PROD1 Drill 60-120'/hr from 10658-800' 2.4/3450/80R 18:00 - 18:30 0.50 DRILL N DPRB PROD1 Wiperto window. 18:30 - 20:00 1.50 DRILL N DPRB PROD1 Drill 100-120'/hr f/10800'-10950' 2.4~2.4 3500 psi. Dropping angle through anticipated shale section. 20:00 - 20:25 0.42 DRILL N DPRB PROD1 Wiper trip to window. Held FIRE drill with night crews. 20:25 - 00:00 3.58 DRILL N DPRB PROD1 Drill 100-120'/hr f/10950'- 11090' 2.4~2.4 3500 psi. 5/24/2001 00:00- 00:15 0.25 DRILL N DPRB PROD1 Drill lateral 11090' to 11100'. ,00:15 - 00:40 0.42 DRILL N DPRB PROD1 Wiper trip to window. No problems at kick-off. '00:40 - 00:50 0.17 DRILL N DPRB PROD1 Log tie-in +3' correction 00:50 - 01:20 0.50 DRILL N DPRB PROD1 Wiper trip in hole. 01:20 - 03:00 1.67 DRILL N DPRB PROD1 Drill lateral f/11100' - 11250'. Leveling off back into target sand. 03:00 - 04:10 1.17 DRILL N DPRB PROD1 Wiper trip in hole. 04:10 - 06:40 2.50 DRILL N DPRB PROD1 Drill lateral f/11250-369' 80-100'/hr 2.3/2.3 3720 psi on bottom. 06:40 - 07:00 0.33 DRILL N DPRB PROD1 Wiper to 10950'-a few minor overpulls thru shale 10970-11080' 07:00 - 08:00 1.00 DRILL N DPRB PROD1 Drilling 11369-403' in a shale dropping from 8892-96' TV'D to stay in (find again) the 14P 08:00 - 08:30 0.50 DRILL N DPRB PROD1 Wiper to window, clean 08:30 - 08:45 0.25 DRILL N DPRB PROD1 Tie-in, add 6.0' 08:45 - 09:30 0.75 DRILL N DPRB PROD1 RIH Printed: 5/29/2001 1:35:32 PM BP EXPLORATION Page 11 of 12 Operations Summary Report Legal Well Name: G-25 Common Well Name: G-25a Spud Date: 10/1/1986 Event Name: REENTER+COMPLETE Start: 5/9/2001 End: Contractor Name: NORDIC CALISTA Rig Release: Rig Name: NORDIC I Rig Number: Date From -To Hours ~Activity Code NPT Phase Description of Operations 5/24/2001 09:30 - 10:00 0.50 DRILL N DPRB PROD1 Drill from 11403-414' in shale and MWD started cycling on and off. Work with it a bit-nope 10:00 - 10:30 0.50 DRILL N DFAL PROD1 Wiper to window 10:30- 12:05 1.58 DRILL N DFAL PROD1 POOH for MWD 12:05 - 13:35 1.50 DRILL N DF^L PROD1 Change out MWD. Change motor bend to 1.1 deg, equalizer jet to 15 13:35 - 16:00 2.42 DRILL N DFAL PROD1 RIH w/BHA #16. Add 12.0' at window. RIH and set down at 11020', 11077' and 11398'. RIH to TD at 11417' CTD 2.5/3450/121 L 16:00- 16:15 0.25 DRILL N DPRB PROD1 Wiperto 11350' 16:15- 17:30 1.25 DRILL N DPRB PROD1 VVork to drill thru shale from 11417-430'2.4/3300/55L 17:30 - 18:00 0.50 DRILL N DPRB PROD1 Drilling 50-80'/hr 2.5/3450/80L from 11430-471' 18:00 - 20:30 2.50 DRILL N DPRB PROD1 Orient to right. Back into sand at 11470'. 2.5/3850/72R. Into shale again 11520'. Orient straight up. Drill sand to 11602'. 20:30 - 20:55 0.42 DRILL N DPRB PROD1 Wiper trip up overpulls through shale 11100-10970'. 20:55 - 21:15 0.33 DRILL N DPRB PROD1 Log tie-in +5' correction 21:15 -22:00 0.75 DRILL N DPRB PROD1 Wiper trip in hole. Setdown at 11000' orient from 120L to 15L went through okay. 22:00 - 23:45 1.75 DRILL N DPRB PROD1 Drilling ahead in sand @ 11602'. 120'/hr 2.4/4000/91R to 11683. Orient around to 60R. Drill to 11730'. Stacking weight. Ordered new mud. 23:45 - 00:00 0.25 DRILL N DPRB PROD1 Wiper trip. 5/25/2001 00:00 - 01:45 1.75 DRILL N DPRB PROD1 Finish wiper trip. Overpull working through shales 11100' - 10990'. 01:45 - 02:20 0.58 DRILL N DPRB PROD1 Drill ahead f/11730' trying to hold 60-70R TF. Drill to 11768'. P/U 11707' to orient unable to go down. Pick-up stuck at 11707'. :02:20 - 02:45 0.42 DRILL N STUC PROD1 Work stick pipe for 5 min, shutdown pumps with neutral weight. Wait 20 min. Pick-up came free. Work pipe and circulate. 02:45 - 05:45 3.00 DRILL N DPRB PROD1 Return to bottom no problems. Resume drilling 11768'. (mud finished at plant in route soon) Drilled to 11808'. Having trouble orienting. Make short wiper trip. Drill ahead 2.4/3900/70-80TF. (0415 swapping mud) 2.4/3750/80-90R TF. Drilled to 11900'. 05:45 - 06:45 1.00 DRILL N DPRB PROD1 Wiper trip to window. 06:45- 07:00 0.25 DRILL N DPRB PROD1 Tie-in, add 17.0' 07:00 - 08:00 1.00 DRILL N DPRB PROD1 RIH w/minor wt losses thru 11000' shale area 08:00 - 08:15 0.25 DRILL N DPRB PROD1 Tag at 11915' corr TD. Orient to left 08:15 - 10:00 1.75 DRILL N DPRB PROD1 Drilling from 11915-978' 2.3/3000/77L. Acts like a shale and can't make hole from 11978' 10:00- 10:15 0.25 DRILL N DFAL PROD1 Wiperto 11750' 10:15 - 10:35 0.33 DRILL N DFAL PROD1 Attempt to make hole and no progress. Getting only 200 psi diff, small chunks of rubber on shakers, motor? 10:35 - 11:30 0.92 DRILL N DFAL PROD1 Wiper to window 11:30 - 13:00 1.50 DRILL N DFAL PROD1 POOH for motor. Kick while trip drill. Pit drill 13:00 - 13:45 0.75 DRILL N DFAL PROD1 ,Change motor (rather rite, but nothing obvious, will have shop ' check this pm) 13:45 - 15:50 2.08 DRILL N DFAL PROD1 RIH w/BHA #17 (1.0 deg motor) 15:50 - 16:45 0.92 DRILL N DFAL PROD1 ~Add 12.0' at 10000'. RIH thru window. Wiper to TD-clean. BHI motor was toast 16:45 - 17:00 0.25 DRILL N DFAL PROD1 Tag at 11978' CTD. Orient 17:00 - 19:30 2.50 DRILL N DPRB PROD1 Drilling 2.6/3100/83L in and out of 40-60 APl sand at 8898' TVD trying to hold incl at 89 deg. Hard to hold NE quad TF. 19:30 - 20:00 0.50 DRILL N DPRB PROD1 Short wiper and orienting to 70-80L TF Printed: 5/29/2001 1:35:32 PM BP EXPLORATION Page 12 of 12 Operations Summa Report Legal Well Name: G-25 Common Well Name: G-25a Spud Date: 10/1/1986 Event Name: REENTER+COMPLETE Start: 5/9/2001 End: Contractor Name: NORDIC CALISTA Rig Release: 'Rig Name: NORDIC 1 Rig Number: Date From - To Hours Activity Code NPT Phase Description of Operations 5/25/2001 20:00 - 20:15 0.25 DRILL N DPRB PROD1 Drilling 80-90L TF to 12150'. 20:15 - 21:00 0.75 DRILL N DPRB PROD1 Make scheduled wiper trip. 21:00 - 21:15 0.25 DRILL N DPRB PROD1 Log tie-in +5' correction. 21:15 - 22:00 0.75 DRILL N DPRB PROD1 TIH 22:00 - 00:00 2.00 DRILL N DPRB PROD1 Drilled f/12150' to 12273'. 5/26/2001 00:00 - 01:00 1.00 DRILL N DPRB PROD1 Continue drilling lateral f/12273' to 12322'. 01:00 - 02:50 1.83 DRILL N DPRB PROD1 Wiper trip. Set down at 10985' pick-up 1 time and work through okay. 02:50 - 04:45 1.92 DRILL :N DPRB PROD1 Drill f/12323' 2.5/3650 60-80R TF to 12385' TD 04:45 - 07:30 2.75 DRILL P PROD1 Wiper trip and tie-in +11' correction. RIH and tag at corrected TD of 12391' 07:30 - 08:45 1.25 DRILL P PROD1 POOH thru open hole, clean 08:45 - 10:15 1.50 DRILL P PROD1 POOH for liner 10:15- 11:00 0.75 DRILL P PROD1 LD drilling BHA 11:00 - 11:30 0.50 CASE P COMP RU to run liner 11:30 - 11:50 0.33 CASE P COMP Safety mtg re: liner 11:50 - 16:50 5.00 CASE P COMP Run 67 jts 2-7/8" 6.16# L-80 STL tubing w/float equipment. Run 27 jts 3-3/16" 6.2# L-80 TCl 1 tubing 16:50- 18:00 1.17 CASE P COMP MU Baker CTLRT. Install Baker CTC. PT @ 35K, 3500 psi 18:00 - 20:10 2.17 CASE P COMP RIH w/liner on CT pump rain/rate. Stop at window up wt. 41k/lb, dw ,,vt 19k/lb. TIH (no problems at KO point, nothing at 11000', setdown at 11602' pickup 1 time work through okay. Tagged bottom 12384' with correction of +7' that should be bottom at 12391'. Pick-up wt 47k/#. Top of liner 9382'. 20:10 - 20:55 0.75 CASE P COMP Drop .625" bumped at 46 bbl in pressure up to 4200 psi and sheared. Pick-up wt 29k/# liner released. Setdown with 5k/# 20:55 - 22:30 1.58 CASE P COMP Swapping to KCL and displace hole 3.1/3500 psi. R/U Dowell cementers. 22:30 - 22:45 0.25 CASE P COMP PJSM: Cementing 22:45 - 00:00 1.25 CASE P COMP Batch mix 26 bbls pumpable 15.8 ppg cement. Pump 5 bbls KCL ahead, PT lines to 4000 psi, pump 26 bbl cement, load CT wiper dart, pump 2 bbl KCL behind, check dart/gone, pump 59.5 bbl total behind and bump LWP shear at 2650 psi, pump 17.7 bbls bump plug w/1100 psi over.. Checks held. ClP 00:10 Printed: 5/29/2001 1:35:32 PM 07/23/01 11:12 FAX 907 564 5193 BP EXPI, ORATION [~002 .. ;." .' ~!!~',,'--::":!!!ii~i:i:;~i~'i'!;'~;:';?i!~'''': BP ~'XI~LORATION Page 12 o: · '.~-'.-1.-:-. :T'~Y-,~',.-. :.:-':. ':'::~2-:., ':c.:. ' · , ........ ._...~ . :=.. -;.-::.. ....... :'.? :~ .. :.. . Legal Well Name: G-25 Common Well Name: O-25a Spud Date: 10/1/1986 Event Name: REENTER+COMPLETE Start: 5/9/2001 End: 5t29/2001 ~Contractor Name: NORDIC CALISTA Rig Release: 512912001 Rig Name: NORDIC 1 Rig Number: ~'"~::":'~ :¢~-~:~;::-~'"':k.?~-'-~;,_?~::~{~:?i:~g;:~:,:.:~'?:,-'.5.~?.;".~;~;.: =~=-k.;/,,,~::. ·:~-.~ ...... ~:~.-7,-,: ~ -~.'..:~;'5 ~ :~ ..-=?;~:-..~-=~::: .,:~;A,-~.?.:.:'....'.; ~'??,::;:yv.~.5· "~,.-~:~..,.:-%::,:. ~:%','s,~:4'.-.. , ~.-.'!:?.:'-.::~D--':'::~):'::':' .:;,-'.:'.'~ .':-7..,/.-..:~..:.~'~ ::~F, '~' :'1:~':.~"~;~:.:'.':::'.~:'.:.':?.:.~".- .'-":,:},-',- ..:'.*.- '=~: :z--,?...~:. ~':,:i ':.~:e:": ',':.~'-.':?.:, -~".'--. :'::'~.. :,:;':. '<:.'.. '.,:':. :'."'=-'- 512512001 20:00 - 20:15 0,25 DRILL N DPRB PROD1 Drilling 80-90L TF to 12150'. 20:15 - 21:00 0.75 DRILL N DPRB PROD1 Make scheduled wiper flip. 21:00- 21:15 0.25 DRILL N DPRB PROD1 Log tie-in +5' correction. 21:15-22:00 0,75 DRILL N DPRB PROD1 TIH 22:00 - 00:00 2.00 DRILL N DPRB PROD1 Drilled f/12150' to 12273', 512612001 00:00- 0'1:00 1.00 DRILL N DPRB PROD1 Continue drilling lateral f/12273' to 12:322'. 01:00 - 02:50 1,83 DRILL N DPRB PROD1 Wiper trip. Set down at 10985' pick-up 1 time and work through okay, 02:50 - 04:45 1.92 DRILL N DPRB PROD1 Drill f/1232:3' 2.513650 60-80R TF to 12365' TD 04:45 - 07:30 2.75 DRILL P PROD1 Wiper trip and tie-in +11' correction, RIH and tag at corrected TD of 12391' 07:30 - 08:45 1.25 DRILL P PROD1 POOH thru open hole, clean 08:45 - 10:15 1.50 DRILL P PROD1 POOH for liner 10:15- 11:00 0.15 DRILL P PROD1 LDdrllllng BHA 11:00 - 11:30 0,50 CASE P COMP Rtl to ru~ liner 11:30 - 11:50 0.33' CASE P COMP Safely mtg re: finer 11:50 - 16:50 5.00 CASE P COMP Run 67 its 2-7/8" 6.16# L-80 STL tubing w/float equipment. Run 27 its 3-3/16" 6.2# L-80 TO11 tubing 16:50 - 18:00 1.17 CASE P COMP MU Baker CTLRT. 'Install Baker CTC. PT@ 35K, 3500 psi 18:00.20:10 2.17 CASE P COMP RIH w/line, r on CT pump man/rate. Stop at window up wt. 41k/lb, dw wt 191dlb. TrH (no problems at KO point, nothing at t1000', setdown at 11602' pickup 1 time work through okay. Tagged bottom 12384' with correction of +?' that should be bottom at 12391'. Pick-up wt 47k/~, Top of liner 9382', 20:10 - 20:55 0.75 CASE !P COMP , Drop .625" bumped at 46 bbl in pressure up to 4200 psi and P sheared. Pick-up wt 29k/~ liner released. 8etdown with 51d~ 20:55 - 22:$0 ~.58 CASE COMP Swapping to KOL and displace hole 3,1/3500 psi. R/U Dowell cementers. 22:30 - 22:45 0,25 CASE = COMP PJSM: Cementing 22:45 - 00:00 1.25 CASE ~ COMP Batch mix 26 bbls pumpable 15.8 ppg cement. Pump 5 bbls KOL ahead, PT Ilne~ to 4000 psi, pump 26 bbl cement, Icad CT wiper dart, pump 2 bbl KOL behind, check dart/gone, pump 59.5 bbl total behind and bump LWP shear at 2650 psi, pump 17,7 bbls bump plug w/1100 psi over.. Oheok~ held. OlP 00:10 5/27/2001 00:00 - 02:00 2.00 CASE :~ OOMP Finish cementing liner. 61P @ 00:10 hrs. Wash-up on top of liner. Pumping 2,9 bpm and TOH. No cement seen at surface. 02:00 - 04:15 2,25 CASE !P COMP P/U Baker 2-1t8" motor and 2,3" mill w/96 its I 114" OSH (in derrick). (BHA 3013.87') 04:15 - 05:15 1,00 CASE ~ COMP TIH to 9362'. 05:15.06:15 1.00 CASE P COMP WOO before ¢leanout 06:15 - 07:30 1.25 CASE :P OOM~ Omt @ 200 psi. RIH in liner and CO to tag at 12300' OTB little high). Attempt to drill, but acts like wiper 07:$0-09:15 1,75 CASE ~P COMP POOH. Cmt~llSOpsi. No cement to surface 09:15 - 11:45 2.50 CASE P COMP Standback CSH workstring 11:45.12:00 0.25 EVAL :~ COMP Safety mtg re: source 12:00 - 12:45 0.75 EVAL ~ COMP MU SWS GPJCNL tool wi carrier 12:45 - 14:15 1.50 EVAL ~ COMP MU 48 stds CSH workstring 14:15- 15:30 1.25 EVAL ~ COMP RIHw/C'I' 15:30.17:25 1.92 EVAL P COMP Begin logging down at 30'/man 17:25 - 20:10 2.75 EVAL P COMP Tag at 12301' CTD, POOH logging at 30'/min and laying in 17 'bbla fresh 150K FIo Pro mud 20:10 - 20:45 0.58 EVAL P COMP :PJSM: Handling source and I 114" CSH, 20:45 - 22:00 1.25 EVAL P :COMP Standback 48 stds I 1/4" CSH. Prlntec~: 7t23/2001 1'.00:09 PM 07/23/01. 11:1.3 FAX 907 564 51.93 BP EXI'I~ORATION [~003 ,, · '/.:.?~:':"5:'::.:. ~'.-'-~?.: :-~:,~-:.'.' ,-.:~._ ":, ~:-'.-z.-'::: '....:~;..-?.~ :'.~ :~ :." ,~,--~.,.':',.-..:.? .. ' , i:~:~:~.~!?~i~:~?~}~ii?~!~!:;.~i~!?~J..~i?i!~:~L.:~¢~}~.!~ BP EXPLORATION' Page 13 of :3 .- :,~ .-.":¥- .~!?. ',-;~,-.: ,::-~. :-=. ; :-: .:. 7~., .~.'::_; ~ &._.. . i } i} '-' per. Legal Well Name: G-25 Common Well Name: G-250 Spud Date: 10/111986 Event Name: REENTER+COMPLETE Start: 5/9/2001 End: 5129/2001 Contractor Name: NORDIC CALISTA Rig Release: 5/29/2001 Rig Name: NORDIC 1 Rig Number. i~,F':~'~: ~'?~!'?.'~*'=''~;-'''''~-'' ' .~ ~:-~'-~::,;-~"=.-~.".. :" ,~:.~)~--~-'""-'~ ~ .'.-~" '~;-~.~.~.~ .,'".~i."--'-~ ~.' ,~ ..., ,,, ..... ~' ~::f:~,:'.,~~..~.~~;~'`~:~`"~`¥:~-:~!:~`5~-`--~`:¥:`:5~:~`¥~e``.~:~``~?£~`~``.~`~:~--~`>~£~L~:~?`~]~;:' :L-.'~-,~. ,?-'~--.,~.: ................. I :~;~?.~..,1 .~;:.-':.".., :.'..~',. .?,~, ,:?,: ', .','~2 , ':~-,~".'~.-' :,:~::'£~.... '~:~::,~, -.;-'.:.'--..:;:" ':,.-:?.~ ":.%:.~' ...: 512712001 22:00- 22:15 0.25 EVAL P COMP L/D logging tools. 22:15 - 23:00 0.75 EVAL ~ COMP R/U and PT liner top. Starting pressure 2000 psi for 30 min, final 1550 psi. 23:00 - 23:30 0.50 EVAL ~ COMP PJSM: PIU perfguns 23:30.00:00 0.50 EVAL ~ COMP Make-up SWS 2" Powerjet 4SPF perf guns. 512812001 00:00 - 03:15 3.25 PERF P COMP Finish p/u of 2" SWS PowerJet guns and 1 114" CSH tubing BHA. 03:15 - 05:45 2,50 PERF P COMP TIH 7460'. Pump in 4 bbls FIo-Pro. On depth 12320'. 05:45 - 08:30 0,7~ PERF P COMP Drop ,625" ball and displace wl KCI water to seat. Sheared at 3100 psi.' No fluid or WHP loss Perforated 11440-~30', 11590-7g0', 11840-12080' and 12180-320' w/4spf 06:30.08:45 2.25 PERF P COMP POOH wl perf guns filling from BS 08:45- 10:45 2.00 PERF P COMP , Standback CSHworkstring 10:48 - 11:00 0.25 PERt~ P COMP Safety mtg re: peff guns 11:00 - 15:15 4.25 PERF P COMP LD 4:2 perf guns and blanks-all shots fired. Load out same 15:15 - t5:30 0.25 RIGD P COMP Safety mtg re: workstrlng 15:30 - 16:50 1,33 RIGD P COMP RIH w/48 stds CSH workstring 16:50 - 17:50 1.00 RIGD' P ICOMP ' POOH LD CSH singles 17:50 - 18:10 0.33 RIGD P COMP iSafety rotc/crew change 18:10- 19:50 1.67 RIGD P COMP 'POOH LDDP 19:50 - 22:30 2.671 RIGD P COMP IStab-on injector. RIH w/CT to 2000', Lay-in methanol 1:1. 22:30 - 00:00 1.50 RIGD P COMP Shut-In master valve, Start P/D, 512912001 !00:00 - 03:30 3.50 RIGD P COMP Continue R/D. 03:30 - 0.00 RIGD P COMP Rig released at 03:30 hrs. 5-29-2001 Move to X-22A . I ,, Printed: 7/23/2001 1:00:09 PM 2 ~l- 14-dun-01 AOGCC 333 W. 7th Ave. Suite 100 Anchorage, AK 99501 Re: Distribution of Survey Data for Well G-25A Dear Dear Sir/Madam: Enclosed are two survey hard copies and 1 disk Tie-on Survey: 10,342.21' MD Window / Kickoff Survey: 10,350.00' MD Projected Survey: 12,391.00' MD (if applicable Please call me at 273-3545 if you have any questions or concerns. Regards, William T. Allen Survey Manager Attachment(s) RECEIVED JUN 1 4 2001 Alaska 0il & G~s 0OHS. Anchorage DEFINITIVE North Slope Alaska Alaska Drilling & Wells PBU_WOA G Pad, Slot G-25 G-25A Job No. AKMW10156, Surveyed: 26 May, 2001 S UR VEY REPORT June, 2001 Your Reft API-500292165201 Surface Coordinates: 5969032.00 N, 658254.00 E (70° 19' 19.4341" N, 148° 43' 00.6988" W) Kelly Bushing: 72.40ft above Mean Sea Level DRILLING 5ERVIC_e5 Survey Reft svy10838 A Halliburton Company Sperry-Sun Drilling Services Survey Report for G-25A Your Ref: API-500292165201 -Job No. AKMWI0156, Surveyed: 26 May, 2001 North Slope Alaska Measured Depth (ft) Sub-Sea Depth (ft) Vertical Depth (ft) 10342.21 60.200 178.730 8770.98 8843.38 10350.00 60.540 181.650 8774.83 8847.23 10384.28 62.670 194.190 8791.19 8863.59 10415.88 64.340 206.680 8805.33 8877.73 10477.28 77.480 225.780 8825.53 8897.93 10519.48 83.410 242.010 8832.58 8904.98 10554.68 85.250 256.600 8836.08 8908.48 10593.28 87.800 269.250 8838.42 8910.82 10624.68 86.750 280.500 8839.92 8912.32 10656.63 86.480 288.410 8841.81 8914.21 10688.03. 90.090 291.400 8842.75 8915.15 10739.03 87.980 298.960 8843.61 8916.01 10776.03 88.860 304.590 8844.63 8917.03 10818.83 88.590 311.620 8845.59 8917.99 10863.03 89.650 318.650 8846.27 8918.67 10897.23 84.550 321.110 8848.00 8920.40 10926.23 80.160 323.040 8851.85 8924.25 10954.03 75.850 322.870 8857.63 8930.03 10978.03 73.480 323.750 8863.98 8936.38 11009.03 78.050 323.920 8871.60 8944.00 11042.43 84.900 324.980 8876.55 8948.95 11072.83 83.320 319.880 8879.67 8952.07 11102.63 80,860 317.940 8883.77 8956.17 11137.03 82.700 314.250 8888.69 8961.09 11175.63 86.840 310.560 8892.21 8964.61 11221.43 87.450 309.510 8894.49 8966.89 11257.03 92.020 306.520 8894.65 8967.05 11288.23 91.670 303.530 8893.65 8966.05 11312.03 93.080 301.070 8892.66 8965.06 11350.23 91.760 295.620 8891.05 8963.45 Local Coordinates Global Coordinates Northings Eastings Northings Eastings (ft) (ft) (ft) (ft) 216.12 S 4712.43 E 5968915.30 N 662969.94 E 222.89 S 4712.41 E 5968908.53 N 662970.06 E 252.66 S 4708.24 E 5968878.67 N 662966.52 E 279.08 S 4698.37 E 5968852.05 N 662957.21 E 325.29 S 4664.03 E 5968805.13 N 662923.85 E 349.68 S 4630.51 E 5968780.04 N 662890.86 E 362.01S 4597.83 E 5968767.02 N 662858.45 E 366.74 S 4559.68 E 5968761.48 N 662820.40 E 364.08 S 4528.48 E 5968763.49 N 662789.15 E 356.13 S 4497.62 E 5968770.79 N 662758.13 E 345.44 S 4468.12 E 5968780.85 N 662728.41E 323.77 S 4422.00 E 5968801.55 N 662681.85 E 304.30 S 4390.58 E 5968820.35 N 662650.02 E 277.91S 4356.93 E 5968846.02 N 662615.82 E 246.61S 4325.77 E 5968876.66 N 662584.01E 220.50 S 4303.77 E 5968902.30 N 662561.46 E 197.83 S 4286.10 E 5968924.59 N 662543.32 E 176.13 S 4269.73 E 5968945.94 N 662526.49 E 157.58 S 4255.90 E 5968964.20 N 662512.27 E 133.32 S 4238.17 E 5968988.07 N 662494.04 E 106.46 S 4218.98 E 5969014.52 N 662474.29 E 82.50 S 4200.55 E 5969038.09 N 662455.36 E 60.26 S 4181.16 E 5969059.92 N 662435.50 E 35.74 S 4157.55 E 5969083.94 N 662411.38 E 9.83 S 4129.17 E 5969109.24 N 662382.46 E 19.60 N 4094.15 E 5969137.92 N 662346.83 E 41.51N 4066.11E 5969159.24 N 662318.33 E 59.41 N 4040.58 E 5969176.59 N 662292.43 E 72.11 N 4020.48 E 5969188.87 N 662272.07 E 90.23 N 3986.91E 5969206.27 N 662238.12 E Dogleg Rate (°/100ft) Alaska Drilling & Wells PBU WOA G Pad Vertical Section Comment -3984.16 Tie on point 32.872 -3988.02 OHST 32.757 -4001.68 35.751 -4008.75 36.278 -4007.13 40.425 41.573 33.369 35.943 24.729 14.924 15.387 15.395 16.433 16.083 16.551 16.512 15.515 10.489 14.752 20.747 17.478 10.475 il.887 14.339 2.649 15.339 9.644 11.906 14.667 -3993.66 -3973.97 -3945.43 -3918.34 -3888.50 -3858.21 -3808.00 -3771.09 -3728.39 -3684.91 -3651.91 -3624.44 -3598.58 -3576.61 -3548.18 -3517.05 -3488.21 -3459.57 -3426.16 -3388.06 -3342.49 -3306.96 -3275.78 -3252.02 -3214.13 10 June, 2001 - 3:34 Page 2 of 4 DrillQuest 2.00.08.005 Sperry-Sun Drilling Services Survey Report for G-25A Your Ref: API-500292165201 Job No. AKMW10156, Surveyed: 26 May, 2001 North Slope Alaska Measured Depth (ft) Azim. Sub-Sea Depth (ft) Vertical Depth (ft) 11399.03 85.960 293.160 8892.02 8964.42 11432,88 84,810 291.230 8894.74 8967.14 11477.68 84.200 285.950 8899.03 8971.43 11516.88 86.040 290.870 8902.37 8974.77 11556.68 86,570 295,970 8904.94 8977.34 11589.68 89.910 297.030 8905.95 8978.35 11631.08 91.140 302,120 8905.57 8977.97 11675.68 88.680 306.170 8905.64 8978.04 11705.48 89.300 311.090 8906.17 8978.57 11742.08 89,300 316.710 8906.61 8979.01 11759.68. 89.120 318.470 8906.86 8979.26 11790.08 91,140 321.990 8906.79 8979.19 11822.08 91.670 324.270 8906.00 8978.40 11856.28 92.370 329.020 8904.80 8977.20 11914.98 92.990 330,780 8902.05 8974.45 11947.98 91.850 329.020 8900.66 8973.06 11977.04 91.670 325.150 8899.77 8972.17 12013.04 91.670 321.110 8898.72 8971.12 12043.24 92.550 318.300 8897.60 8970.00 12072.64 92.460 315.660 8896.32 8968.72 12100.64 92.900 312.320 8895.01' 8967.41 12132.84 92,020 312.320 8893.63 8966.03 12165.44 93,600 310.390 8892.03 8964.43 12213.84 95.980 308.450 8887.99 8960.39 12251.44 94.390 311.790 8884.59 8956.99 12285.84 92,550 316.360 8882.51 8954.91 12347.04 93.340 322.690 8879.36 8951.76 12363.04 94.310 325.500 8878.29 8950.69 12391,00 94.310 325.500 8876.19 8948.59 Local Coordinates Global Coordinates Northings Eastings Northings Eastings (ft) (ft) (ft) (ft) 110.36 N 3942.49 E 5969225.47 N 662193.29 E 123.11 N 3911.25 E 5969237.55 N 662161.79 E 137.32 N 3869.00 E 5969250.87 N 662119.25 E 149.65 N 3831.96 E 5969262.42 N 662081.95 E 165.44 N 3795.52 E 5969277.43 N 662045.19 E 180.15 N 3766.01E 5969291.52 N 662015.37 E 200.58 N 3730.02 E 5969311.18 N 661978.96 E 225.60 N 3693.12 E 5969335.43 N 661941.54 E 244.20 N 3669.85 E 5969353.53 N 661917.88 E 269.56 N 3643.49 E 5969378.33 N 661891.00 E 282.56 N 3631.62 E 5969391.07 N 661878.86 E 305.92 N 3612.18 E 5969414.02 N 661858.92 E 331.51 N 3592.98 E 5969439.20 N 661839.20 E 360.05 N 3574.20 E 5969467.33 N 661819.81E 410.78 N 3544.79 E 5969517.43 N 661789.34 E 439.30 N 3528.26 E 5969545.60 N 661772.21E 463.68 N 3512.48 E 5969569.64 N 661755.92 E 492.46 N 3490.89 E 5969597.96 N 661733.73 E 515.48 N 3471.38 E 5969620.56 N 661713.73 E 536.95 N 3451.34 E 5969641.60 N 661693.25 E 556.37 N 3431.22 E 5969660.60 N 661672.72 E 578.03 N 3407.43 E 5969681.75 N 661648.49 E 599.54 N 3382.99 E 5969702.74 N 661623.60 E 630.17 N 3345.74 E 5969732.57 N 661585.71E 654.29 N 3317.11E 596975.6.09 N 661556.58 E 678.17 N 3292.45 E 5969779.45 N 661531.42 E 724.64 N 3252.80 E 5969825.07 N 661490.79 E 737.57 N 3243.44 E 5969837.80 N 661481.16 E 760.55 N 3227.64 E 5969860.43 N 661464.89 E Dogleg Rate (°/100ft) 12,909 6.621 11.810 13.357 12.857 10.618 12.648 10.624 16,638 15.354 10.051 13,350 7.313 14.030 3.176 6.350 13,325 11.217 9.744 8.976 12.019 2,733 7,645 6.335 9.805 14,298 10,410 18.542 0.000 Alaska Drilling & Wells PBU WOA G Pad Vertical Section Comment -3166.20 -3133.30 -3090.54 -3053.12 -3014.22 -2981.61 -2940.41 -2895.82 -2866.10 -2829.96 -2812.78 -2783.46 -2753.06 -2721.30 -2668.11 -2638.21 -2611.30 -2577.11 -2547.92 -2519.19 -2491.57 -2459.66 -2427.30 -2379.22 -2341.93 -2308.03 -2248.90 -2233.81 -2207.70 Projected Survey June, 2001 - 3:34 Page 3 of 4 DrillQuest 2.00.08.005 Sperry-Sun Drilling Services Survey Report for G.25A Your Ref: API-50029216520~ Job No. AKMWfOf56, Surveyed: 26 May, 200f North Slope Alaska Alaska Drilling & Wells PBU WOA G Pad All data is in Feet (US) unless otherwise stated. Directions and coordinates are relative to True North. Vertical depths are relative to Well Reference. Northings and Eastings are relative to Well Reference. Magnetic Declination at Surface is 26.675° (10-May-01) The Dogleg Severity is in Degrees per 100 feet (US). Vertical Section is from Well Reference and calculated along an Azimuth of 305.000° (True). Based upon Minimum Curvature type calculations, at a Measured Depth of 12391.00ft., The Bottom Hole Displacement is 3316.04ft., in the Direction of 76.741° (True). Comments Measured Station Coordinates Depth TVD Northings Eastings (ft) (ft) (ft) (ft) Comment 10342.21 8843.38 216.12 S 4712.43 E Tie on point 10350.00 8847.23 222.89 S 4712.41 E OHST 12391.00 8948.59 760.55 N 3227.64 E Projected Survey Survey tool program for G-25A From To Measured Vertical Measured Vertical Depth Depth Depth Depth (ft) (ft) (ft) (fi) 0.00 0.00 10100.00 8661.99 10100.00 8661.99 12391.00 8948.59 Survey Tool Description AK-3 BP_HM - BP High Accuracy Magnetic (G-25) MWD Magnetic (G-25APB1) June, 2001 - 3:34 Page 4 of 4 DrillQuest 2.00.08.005 14-Jun-01 AOGCC 333 W. 7th Ave. Suite 100 Anchorage, AK 99501 Re: Distribution of Survey Data for Well G-25APB2 Dear Dear SidMadam: Enclosed are two survey hard copies and 1 disk Tie-on Survey: 10,570.81' MD Window / Kickoff Survey: 10,603.30' MD Projected Survey: 12,434.00' MD (if applicable Please call me at 273-3545 if you have any questions or concerns. Regards, William T. Allen Survey Manager Attachment(s) RECEIVED JUN 1 4 2001 Alaska Oil & Gas Cons. Anchorage, DEF N T V North Slope Alaska Alaska Drilling & Wells PBU_WOA G Pad, Slot G-25 G-25APB2 Job No. AKMW10156, Surveyed: 21 May, 2001 SURVEY REPORT June, 200~ Your Ref: API-500292165271 Surface Coordinates: 5969032.00 N, 658254.00 E (70° 19' 19.4341" N, 148° 43' 00.6988" W) Kelly Bushing: 72.40ft above Mean Sea Level BRILLINI~ 5ERVI(:~E5 Survey Ref: svy10839 A Halliburton Company Sperry-Sun Drilling Services Survey Report for G-25APB2 Your Ref: API-5OO2g216527~ Job No. AKMWfO~56, Surveyed: 2~ May, 200~ North Slope Alaska Measured Depth (ft) Incl. Azim. Sub-Sea Depth (fi) Vertical Depth (ft) 10570.81 74.710 252.550 8862.69 8935.09 10603.30 73.780 261.630 8871.53 8943.93 10638.00 70.400 272.070 8882.23 8954.63 10664.80 71.100 280.680 8891.08 8963.48 10694.60 72.600 289.120 8900.38 8972.78 10728.60 77.780 298.080 8909.08 8981.48 10759.40 79.720 304.230 8915.09 8987.49 10787.40 83.670 311.620 8919.14 8991.54 10815.60 85.600 318.650 8921.78 8994.18 10846.06 87.540 326.560 8923.61 8996.01 10877.46 85.600 331.660 8925.49 8997.89 10912.86 87.630 325.500 8927.58 8999.98 .10943.46 87.430 321.120 8928.90 9001.30 10975.66 86.310 316.010 8930.66 9003.06 11005.26 85.870 311.970 8932.68 9005.08 11038.86 88.400 307.520 8934.36 9006.76 11069.06 88.940 302.300 8935.06 9007.46 11099.26 92.720 301.070 8934.62 9007.02 11128.26 90.180 295.440 8933.89 9006.29 11165.46 90.440 292.100 8933.69 9006.09 11195.86 91.670 287.010 8933.13 11230.86 91.320 281.380 8932.21 11259.66 92.200 276.990 8931.33 11294.66 94.220 280.500 8929.37 11332.46 94.920 287.360 8926.35 9005.53 9004.61 9003.73 9001.77 8998.75 11382.46 91.490 293.510 8923.55 8995.95 11418.06 92.280 297.910 8922.38 8994.78 11448.06 92.110 303.710 8921.23 8993.63 11482.66 89.910 308.630 8920.62 8993.02 11518.46 89.650 315.660 8920.76 8993.16 Local Coordinates Global Coordinates Northings Eastings Northings Eastings (ft) (ft) (ft) (ft) 372.76 S 4595.94 E 5968756.24 N 662856.78 E 379.74 S 4565.50 E 5968748.61 N 662826.49 E 381.58 S 4532.59 E 5968746.08 N 662793.63 E 378.77 S 4507.48 E 5968748.36 N 662768.46 E 371.49 S 4480.14 E 5968755.06 N 662740.98 E 358.32 S 4450.08 E 5968767.59 N 662710.64 E 342.70 S 4424.24 E 5968782.67 N 662684.49 E 325.67 S 4402.42 E 5968799.23 N 662662.30 E 305.79 S 4382.62 E 5968818.69 N 662642.10 E 281.65 S 4364.18 E 5968842.44 N 662623.14 E 254.76 S 4348.09 E 5968868.98 N 662606.49 E 224.62 S 4329.68 E 5968898.72 N 662587.45 E 200.11 S 4311.41 E 5968922.84 N 662568.68 E 176.02 S 4290.14 E 5968946.48 N 662546.90 E 155.51S 4268.90 E 5968966.54 N 662525.23 E 134.06 S 4243.11E 5968987.44 N 662498.99 E 116.79 S 4218.36 E 5969004.18 N 662473.88 E 100.93 S 4192.67 E 5969019.50 N 662447.86 E 87.22 S 4167.14 E 5969032.67 N 662422.06 E 72.23 S 4133.10 E 5969046.94 N 662387.71 E 62.06 S 4104.47 E 5969056.51 N 662358.87 E 53.48 S 4070.57 E 5969064.36 N 662324.79 E 48.88 S 4042.16 E 5969068.36 N 662296.29 E 43.57 S 4007.62 E 5969072.94 N 662261.65 E 34.51S 3971.07 E 5969081.23 N 662224.92 E 17.09 S 3924.33 E 5969097.67 N 662177.81 E 1.66 S 3892.28 E 5969112.42 N 662145.44 E 13.69 N 3866.54 E 5969127.22 N 662119.39 E 34.10 N 3838.62 E 5969147.04 N 662091.05 E 58.11N 3812.10 E 5969170.48 N 662064.02 E Dogleg Rate (°/100ft) 27.047 30.231 30.440 27.376 29.675 20.571 29.677 25.745 26.692 17.350 18.292 14.315 16.223 13.698 15.220 17.372 13.162 21.291 9.006 17.222 16.111 15.539 11.557 18.185 14.065 12.551 19.327 15.574 19.650 Alaska Drilling & Wells PBU WOA G Pad Vertical Section Comment -3978.58 -3957.65 -3931.75 -3909.56 -3882.99 -3850.81 -3820.69 -3793.05 -3765.43 -3736.47 -3707.87 -3675.50 -3646.48 -3615.24 -3586.08 -3552.65 -3522.47 -3492.33 -3463.55 -3427.07 -3397.78 -3365.09 -3339.18 -3307.85 -3272.71 -3224.42 -3189.31 -3159.43 -3124.85 -3089.36 Tie on point MWD Magnetic OHST 10 June, 2001 - 3:38 Page 2 of 4 DrillQuest 2.00.08.005 North Slope Alaska Measured Depth (ft) Incl. Sub-Sea Depth (ft) Vertical Depth (ft) 11550.66 88.770 321.640 8921.20 8993.60 11580.26 89.300 327.090 8921.70 8994.10 11619.66 89.820 333.240 8922.01 8994.41 11659.86 90.440 342.130 8921.91 8994.31 11695.99 89.070 345.790 8922.07 8994.47 11734.19 92.250 350.380 8921.63 8994.03 11772.19 93.570 346.500 8919.70 8992.10 11811.99 91.450 341.740 8917.96 8990.36 11841.59 90.750 335.050 8917.39 8989.79 11869.79 93.130 333.280 8916.43 8988.83 11914.39. 94.800 326.940 8913.34 8985.74 11942.19 94.710 321.830 8911.04 8983.44 11972.99 92.160 315.840 8909.19 8981.59 12006.19 93.740 313.370 8907.48 8979.88 12039.89 95.240 308.610 8904.84 8977.24 12070.09 96.650 304.910 8901.71 8974.11 12104.89 94.890 301.560 8898.22 8970.62 12137.89 94.630 300.330 8895.48 8967.88 12170.29 91.370 296.810 8893.78 8966.18 12205.89 89.690 290.820 8893.45 8965.85 12237.89 90.400 286.060 8893.43 8965.83 12268.29 91.100 278.660 8893.03 8965.43 12295.29 92.860 277.070 8892.09 8964.49 12325.89 91.280 272.840 8890.99 8963.39 12359.69 90.040 277.600 8890.60 8963.00 12389.29 89.340 281.300 8890.76 8963.16 12434.00 89.340 281.300 8891.27 8963.67 Sperry-Sun Drilling Services Survey Report for G-25APB2 Your Ref: API-500292165271 Job No. AKMWlO156, Surveyed: 2~ May, 200~ Local Coordinates Global Coordinates Northings Eastings Northings Eastings (ft) (ft) (ft) (ft) 82.27 N 3790.83 E 5969194.18 N 662042.26 E 106.31 N 3773.60 E 5969217.86 N 662024.52 E 140.47 N 3754.01E 5969251.60 N 662004.21E 177.63 N 3738.76 E 5969288.42 N 661988.18 E 212.34 N 3728.78 E 5969322.92 N 661977.47 E 249.70 N 3720.89 E 5969360.10 N 661968.80 E 286.87 N 3713.29 E 5969397.11 N 661960.42 E 325.11N 3702.41E 5969435.10 N 661948.73 E 352.60 N 3691.52 E 5969462.37 N 661937.27 E 377.97 N 3679.24 E 5969487.47 N 661924.45 E 416.52 N 3657.08 E 5969525.54 N 661901.49 E 439.04 N 3640.96 E 5969547.71 N 661884.89 E 462.17 N 3620.73 E 5969570.41 N 661864.18 E 485.45 N 3597.12 E 5969593.19 N 661840.09 E 507.48 N 3571.77 E 5969614.68 N 661814.28 E 525.45 N 3547.72 E 5969632.15 N 661789.85 E 544.43 N 35~8.76 E 5969650.50 N 661760.50 E 561.34 N 3490.56 E 5969666.81 N 661731.94 E 576.80 N 3462.15 E 5969681.68 N 661703.21E 591.17 N 3429.60 E 5969695.36 N 661670.37 E 601.29 N 3399.25 E 5969704.83 N 661639.81E 607.79 N 3369.58 E 5969710.71N 661610.01E 611.48 N 3342.85 E 5969713.84 N 661583.21E 614.12 N 3312.39 E 5969715.83 N 661552.70 E 617.20 N 3278.74 E 5969718.20 N 661519.00 E 622.06 N 3249.55 E 5969722.44 N 661489.71E 630.82 N 3205.71E 5969730:27 N 661445.69 E Dogleg Rate (°/100ft) 18.770 18.496 15.664 22.168 10.816 14.616 10.773 13.081 22.720 10.515 14.667 18.321 21.103 8.823 14.768 13.049 10.831 3.797 14.796 17.474 15.039 24.449 8.782 14.748 14.552 12.721 0.000 Alaska Drilling & Wells PBU WOA G Pad Vertical Section Comment -3058.08 -3030.17 -2994.53 -2960.73 -2932.64 -2904.75 -2877.20 -2846.37 -2821.67 -2797.O6 -2756.80 -273O.67 -2700.84 -2668.15 -2634.75 -2604.73 -2570.13 -2537.33 -2505.18 -2470.28 -2439.61 -2411.58 -2387.57 -2361.10 -2331.78 -2305.08 -2264.14 Projected Survey ~0 June, 200~ - 3:38 Page 3 of 4 DrillQuest 2.00.08.005 North Slope Alaska Sperry-Sun Drilling Services Survey Report for G-25APB2 Your Ref: API-500292~ 65271 Job No. AKMWlO156, Surveyed: 2~ May, 200~ Alaska Drilling & Wells PBU WOA G Pad All data is in Feet (US) unless otherwise stated. Directions and coordinates are relative to True North. Vertical depths are relative to Well Reference. Northings and Eastings are relative to Well Reference Magnetic Declination at Surface is 26.675° (10-May-01) The Dogleg Severity is in Degrees per 100 feet (US). Vertical Section is from Well Reference and calculated along an Azimuth of 305.000° (True). Based upon Minimum Curvature type calculations, at a Measured Depth of 12434.00ft., The Bottom Hole Displacement is 3267.19ft., in the Direction of 78.868° (True). Comments Measured Station Coordinates Depth TVD Northings Eastings (ft) (ft) (ft) (fi) Comment 10570.81 8935.09 372.76 S 4595.94 E Tie on point 10603.30 8943.93 379.74 S 4565.50 E OHST 12434.00 8963.67 630.82 N 3205.71 E Projected Survey Survey tool program for G-25APB2 From To Measured Vertical Measured Vertical Depth Depth Depth Depth (ft) (ft) (ft) (ft) 0.00 0.00 10570.81 8935.09 10570.81 8935.09 12434.00 8963.67 Survey Tool Description AK-3 BP_HM - BP High Accuracy Magnetic (G-25) MWD Magnetic (G-25APB2) June, 2001 - 3:38 Page 4 of 4 DriilQuest 2.00.08.005 14-Jun-01 AOGCC 333 W. 7th Ave. Suite 100 Anchorage, AK 99501 Re: Distribution of Survey Data for Well G-25APB1 Dear Dear SidMadam: Enclosed are two survey hard copies and 1 disk Tie-on Survey: 10,100.00' MD Window / Kickoff Survey: 10,168.00' MD Projected Survey: 11,452.00' MD (if applicable Please call me at 273-3545 if you have any questions or concerns. Regards, William T. Allen Survey Manager Attachment(s) RECEIVED JUN 1 4 2001 AJag~ Oil & Ga~ Cons, Cofllmieetor Anchorage DEFiNiTiVE North Slope Alaska Alaska Drilling & Wells PBU_WOA G Pad, Slot G-25 G-25APBI Job No. AKMWfOf56, Surveyed: ~5 May, 2001 $ UR VEY REPORT June, 200~ Your Ref: API200292165270 Surface Coordinates: 5969032.00 N, 658254.00 E (70° 19' 19.434~" N, 148° 43' 00.6988" Vt/) Kelly Bushing: 72.40ft above Mean Sea Level BRILLINI3 EiERVII~E5 Survey Ref: svy10837 A Halliburton Company Sperry-Sun Drilling Services Survey Report for G.25APB1 Your Ref: AP!200292165270 Job No. AKMWlO156, Surveyed: ~5 May, 200~ r North Slope Alaska Measured Depth (ft) Sub-Sea Depth (ft) Vertical Depth (ft) 10100.00 28.620 107.310 8589.59 8661.99 10168.00 28.180 107.310 8649.41 8721.81 10203.27 35.420 124.500 8679.43 8751.83 10237.38 43.170 141.100 8705.88 8778.28 10272.41 48.440 158.210 8730.38 8802.78 10306.41 54.400 166.420 8751.60 8824.00 10342.21 60.200 178.730 8770.98 8843.38 10375.61 62.670 191.030 8787.00 8859.40 10409.21 63.190 201.930 8802.33 8874.73 10445.41 63.460 211.250 8818.61 8891.01 10488.61 68.030 226.710 8836.44 8908.84 10509.01 69.870 232.690 8843.77 8916.17 10539.21 72.070 241.480 8853.63 8926.03 10570.81 74.710 252.550 8862.69 8935.09 10601.81 76.820 262.750 8870.33 8942.73 10637.01 76.900 275.230 8878.37 8950.77 10670.21 76.990 284.550 8885.88 8958.28 10701.21 79.450 294.740 8892.23 8964.63 10731.01 86.750 300.190 8895.81 8968.21 10769.49 88.990 308.790 8897.24 8969.64 10800.09 89.870 316.900 8897.54 8969.94 10831.29 88.370 320.070 8898.02 8970.42 10865.49 85.900 322.010 8899.73 8972.13 10898.69 84.320 317.250 8902.56 8974.96 10934.89 85.900 312.140 8905.65 8978.05 10964.89 87.580 307.730 8907.36 8979.76 10998.69 89.070 303.860 8908.35 8980.75 11028.29 88.810 300.680 8908.89 8981.29 11058.89 87.140 297.860 8909.98 8982.38 11089.49 85.200 295.930 8912.02 8984.42 Local Coordinates Global Coordinates Northings Eastings Northings Eastings (ft) (ft) (ft) (ft) 106.78 S 4625.38 E 5969022.77 N -662880.61 E 116.41S 4656.26 E 5969013.80 N 662911.68 E 124.70 S 4672.69 E 5969005.85 N 662928.28 E 139.44 S 4688.23 E 5968991.44 N 662944.13 E 161.04 S 4700.68 E 5968970.12 N 662957.03 E 186.33 S 4708.66 E 5968944.99 N 662965.54 E 216.12 S 4712.43 E 5968915.30 N 662969.94 E 245.26 S 4709.91E 5968886.11N 662968.03 E 273.88 S 4701.43 E 5968857.31 N 662960.16 E 302.76 S 4686.97 E 5968828.13 N 662946.32 E 333.19 S 4662.23 E 5968797.19 N 662922.22 E 345.49 S 4647.72 E 5968784.59 N 662907.97 E 360.97 S 4623.77 E 5968768.60 N 662884.36 E 372.76 S 4595.94 E 5968756.24 N 662856.78 E 379.16 S 4566.63 E 5968749.22 N 662827.61 E 379.76 S 4532.43 E 5968747.89 N 662793.43 E 374.21S 4500.61 E 5968752.77 N 662761.50 E 364.02 S 4472.07 E 5968762.36 N 662732.76 E 350.38 S 4445.86 E 5968775.45 N 662706.26 E 328.62 S 4414.20 E 5968796.53 N 662674.14 E 307.83 S 4391.78 E 5968816.84 N 662651.30 E 284.48 S 4371.11 E 5968839.76 N 662630.13 E 257.92 S 4349.63 E 5968865.85 N 662608.10 E 232.73 S 4328.21E 5968890.59 N 662586.16 E 207.37 S 4302.58 E 5968915.40 N 662560.00 E 188.15 S 4279.62 E 5968934.13 N 662536.64 E 168.39 S 4252.22 E 5968953.31 N 662508.83 E 152.59 S 4227.20 E 5968968.58 N 662483.48 E 137.64 S 4200.53 E 5968982.96 N 662456.50 E 123.83 S 4173.30 E 5968996.19 N 662428.99 E Dogleg Rate (°/100ft) 0.647 32.706 38.134 38.012 25.738 33.124 33.160 28.919 23.013 34.271 28.803 28.458 34.586 32.607 34.523 27.347 33.138 3O.484 23.O79 26.657 11.239 9.179 15.057 14.726 15.708 12.264 10.777 10.705 8.933 Alaska Drilling & Wells PBU WOA G Pad Vertical Section Comment -3850.14 -3880.95 -3899.17 -3920.36 -3942.94 -3963.98 -3984.16 -3998.81 -4008.28 -4013.00 -4010.19 -4OO5.35 -3994.62 -3978.58 -3958.24 -3930.57 -3901.32 -3872.10 -3842.80 -3804.39 -3774.10 -3743.77 -3710.95 -3678.95 -3643.41 -3613.58 -3579.80 -3550.25 -3519.82 -3489.60 Tie on point MWD Magnetic Top whipstock '10 June, 2001 - 3:29 Page 2 of 4 DrillQuest 2.00.08.005 Sperry-Sun Drilling Services Survey Report for G-25APB1 Your Ref: API200292~ 65270 Job No. AKMW~O~56, Surveyed: f5 May, 200~ North Slope Alaska Measured Sub-Sea Vertical Local Coordinates Global Coordinates Depth Incl. Azim. Depth Depth Northings Eastings Northings Eastings (ft) (ft) (ft) (ft) (ft) (ft) (ft) 11121.09 83.610 294.520 8915.10 8987.50 110.43 S 4144.86 E 5969008.99 N 662400.26 E 11158.49 87.490 300.510 8918.00 8990.40 93.21 S 4111.81 E 5969025.51 N 662366.86 E 11186.69 88.110 304.380 8919.09 8991.49 78.09 S 4088.03 E 5969040.12 N 662342.77 E 11216.29 87.750 307.560 8920.16 8992.56 60.72 S 4064.10 E 5969056.99 N 662318.47 E 11250.49 88.810 312.490 8921.18 8993.58 38.74 S 4037.93 E 5969078.41 N 662291.85 E 11280.09 87.580 314.250 8922.12 8994.52 18.43 S 4016.42 E 5969098.26 N 662269.92 E 11313.09 88.020 316.900 8923.38 8995.78 5.12 N 3993.34 E 5969121.32 N 662246.35 E 11350.29 88.550 311.260 8924.50 8996.90 30.97 N 3966.64 E 5969146.61 N 662219.11 E 11385.49 89.600 305.970 8925.07 8997.47 52.93 N 3939.15 E 5969167.98 N 662191.16 E 11415.69 90.840 302.090 8924.95 8997.35 69.83 N 3914.13 E 5969184.35 N 662165.79 E 11452.00. 91.370 301.390 8924.25 8996.65 88.93 N 3883.26 E 5969202.79 N 662134.52 E All data is in Feet (US) unless otherwise stated. Directions and coordinates are relative to True North. Vertical depths are relative to Well Reference. Northings and Eastings are relative to Well Reference. Magnetic Declination at Surface is 26.675° (10-May-01) The Dogleg Severity is in Degrees per 100 feet (US). Vertical Section is from Well Reference and calculated along an Azimuth of 305.000° (True). Based upon Minimum Curvature type calculations, at a Measured Depth of 11452.00ft., The Bottom Hole Displacement is 3884.27ft., in the Direction of 88.688° (True). Dogleg Rate (°/100ft) 6.711 19.039 13.888 10.805 14.738 7.252 8.134 15.221 15.319 13.488 2.418 Alaska Drilling & Wells PBU WOA G Pad Vertical Section Comment -3458.61 -3421.66 -3393.51 -3363.94 -3329.90 -3300.63 -3268.22 -3231.52 -3196.40 -3166.22 -3129.97 Projected survey June, 2001 - 3:29 Page 3 of 4 DrillQuest 2.00.08.005 Sperry-Sun Drilling Services Survey Report for G-25APB1 ' Your Ref: API200292165270 Job No. AKMWfO:156, Surveyed: ~5 May, 200~i North Slope Alaska Alaska Drilling & Wells PBU WOA G Pad Comments Measured Depth (ft) Station Coordinates TVD North ings Eastings (fi) (ft) (ft) 10100.00 8661.99 106.78 S 4625.38 E 10168.00 8721.81 116.41S 4656.26 E 11452.00 8996.65 88.93 N 3883.26 E Comment Tie on point Top whipstock Projected survey Survey tool program for G-25APB~ From To Measured Vertical Measured Depth Depth Depth (ft) (ft) (ft) Vertical Depth (ft) 0.00 0.00 10100.00 8661.99 10100.00 8661.99 11452.00 8996.65 Survey Tool Description AK-3 BP_HM - BP High Accuracy Magnetic (G-25) MWD Magnetic (G-25APB1) 10 June, 2001 - 3:29 Page 4 of 4 DrillQuest 2.00.08.005 .. 06/19/01 Schlumberger Alaska Data & Consulting Services 3940 Arctic Blvd, Suite 300 Anchorage, AK 99503-5711 ATTN: Sherrle NO. 1231 Company: S~ate of Alaska Alaska Oil & Gas Cons Comm Attn: Lisa Weepie 333 West 7th Ave, Suite 100 Anchorage, AK 99501 Field: Prudhoe Bay Color Well Job # Log Description Date Blueline Sepia Prints CD ),22A 11'/-20~ 21287 SCMT 05123101 ~).S. t1-35 J~/~- 0[~-~ 21286 SCMT 05122/01 ~-25A 2,'~]° O[e rD 21279 MCNL 05/27/01 D.S. 2-03B /~..1~-' ~[,l'"J 21278 ~,ICNL 0513010t C-33A '~_OID -.~_h~, 21058 MCNL (REDO) 01/28/01 *REDO - Changed depth shift edits - remove below KOP of A well. PLEASE ACKNOWLEDGE RECEIPT BY SIGNING AND RETURNING ONE COPY EACH TO: BP Exploration (Alaska) Inc. Petrotectnical Data Center LR2-1 900 E. Benson Blvd. Anchorage, Alaska 99508 Date Delivered: Schlumberger GeoQuest RECEIVED 3940 Arctic Blvd, Suite 300 Anchorage, AK 99503-5711 ATTN: Sherde . JUN 2 2 2001 ALASI~k OIL ANrD GAS CON~ilI~RYAT101~I COMMISSIO1NI Dan Kara CT Drilling Engineer BP Exploration (Alaska) Inc. P O Box 196612 Anchorage, AK 99519-6612 TONY KNOWLES, GOVERNOR 333 W. 7TM AVENUE, SUITE 100 ANCHORAGE, ALASKA 99501-3539 PHONE (907) 279-1433 FAX (907) 276-7542 Re' Prudhoe Bay Unit 'G-25A BP Exploration (Alaska) Inc. Permit No: 201-065 Sur Loc: 2617' SNL, 1973' WEL, SEC. 12, T1 IN, R13E, UM Btmhole Loc. 1935' SNL, 1290' EWL, SEC. 07, T1 IN, R14E, UM Dear Mr. Kara: Enclosed is the approved application for permit to redrill the above referenced well. The permit to redrill does not exempt you from obtaining additional permits required by law from other governmental agencies, and does not authorize conducting drilling operations until all other required permitting determinations are made. Information regarding a "safety joint" for running the 3-3/16" portion of the planned production liner has been received from Mr. Ted Stagg. Providing such a "safety joint" equipped with a suitably sized lifting sub and threaded crossover to mate with the 3-3/16" liner section should lessen the time required to install the joint should a flow be observed while nmning the liner. However, be advised that the Commission views the use of this joint as an interim measure pending the receipt of pipe rams capable of sealing on this size pipe. Not later than May 15, 2001, Alaska. Drilling and Wells (BP Exploration Alaska) is directed to provide the. Commission with information regarding the availability/deliverability of rams sized for 3-3/16" and other such sizes that you may plan to nm. Blowout prevention equipment (BOPE) must be tested in accordance with 20 AAC 25 036. Sufficient notice (approximately 24 hours) must be given to allow a representative of the Commission to witness a test of BOPE installed prior to drilling new hole. Notice may be given by contacting the Commission petroleum field inspector on the North Slope pager at 659-3607. Sincerely, .... ~L/:,,,.,'~,, ............ '!' i/' ~,, ,, i'4~!''i'i' ' Julie M. Heusser Commissioner BY ORDER OF THE COMMISSION DATED this ":; ~"~"~ .... ....~: ...... day of April, 2001 jjc/Enclosures cc: Department of Fish & Game, Habitat Section w/o encl. Department of Environmental Conservation w/o encl. STATE OF ALASKA ALASKAI' -AND GAS CONSERVATION COMM~ ION PERMIT TO DRILL 20 AAC 25.005 I [] Exploratory [] Stratigraphic Test [] Development Oil la. Type of work [] Drill [] Redrill lb. Type of well [] Service [] 'Development Gas [] Single Zone [] Multiple Zone [] Re-Entry [] Deepen 2. Name of Operator ,5. Datum Elevation (DF or KB) 10. Field and Pool BP Exploration (Alaska) Inc. KBE = 72.40 Prudhoe Bay Field / Prudhoe 3. Address 6. Property Designation Bay Pool P.O. Box 196612, Anchorage, Alaska 99519-6612 ADL 028304 !4. Location of well at surface 7. Unit or Property Name 11. Type Bond (See 2O AAC 25.025) 2617' SNL, 1973' WEL, SEC. 12, T11N, R13E, UM Prudhoe Bay Unit At top of productive interval 8. Well Number 2693' SNL, 2548' EWL, SEC. 07, T11N, R14E, UM G-25A Number 2S100302630-277 At total depth 9. Approximate spud date 1935' SNL, 1290' EWL, SEC. 07, T11N, R14E, UM 05/04/01 Amount $200,000.00 12. Distance to nearest property line 113. Distance to nearest well 14. Number of acres in property 15. Proposed depth (MD and TVD) ADL 028280, 1290' MDI No Close Approach 2560 12245' MD / 8906' 'I'VD 16. To be completed for deviated wells 17. Anticipated pressure {see 20 AAC 25.035 (e) (2)} Kick Off Depth 10168' MD Maximum Hole Angle 108 ° Maximum surface 2200 psig, At total depth (TVD) 8800' / 3100 psig 18. Casing Program Specifications Setting Depth Size Top Bottom Quantity of Cement Hole Casin,q Wei,qht Grade Couplin,q Len,qth MD TVD MD TVD (include sta,qe data) 3-3/4" 3-3/16'x2-7/a' 6.2#/6.4# L-80 TCII / STL 2895' 9350' 7945' 12245' 8906' 112 cu ft Class 'G' 19. To be comPleted for Redfill, Re-entry, and Deepen Operations. Present well condition summary Total depth: measured 10600 feet Plugs (measured) true vertical 9108 feet Effective depth: measured 10504 feet Junk (measured) Fill at 10504' MD (03/89) true vertical 9021 feet Casing Length Size Cemented MD TVD Structural Conductor 110' 20" 9 cu. yds. Concrete 110' 110' Surface ' 2746' 13-3/8" 3890 cu. ft. Permafrost 2785' 2685' Intermediate 9688! 9-5/8" 590 cu. ft. Class 'G' 9724' 8337' Production Liner 1138' 5-1/2" 484 Cu. ft. Class 'G' 94~2'2_10_600' 8113'-9108' ECEI Perforation depth: measured OPen: 10458'- 10474, ~AJ~ 3 0 2001 Straddled: 10375' - 10385'; Sqz: 10406' - 10445' true vertical Open: 8980' - 8994' ~,las/(a 0il & Gas Cons. Commission Straddled: 8905'-8914'; Sqz: 8933'-8968' Anchorage 20. Attachments [] Filing Fee [] Property Plat [] BOP Sketch [] Diverter Sketch [] Ddlling Program [] Drilling Fluid Program [] Time vs Depth Plot [] Refraction Analysis [] Seabed Report [] 20 AAC 25.050 Requirements Contact Engineer Name/Number: Dan Kara, 564-5667 Prepared By Name/Number: Terde Hubble, 564-4628 21. I hereby certify that the foregoi[~,g-is-ljrue and correct to the best of my knowledge , .,-- ,~~~ Title CT Drilling Engineer Date ~/2-..~/0' -- Signed Dan Kara :.;'~ii!,.:,.;.:.~i.~?~ ' '-: .".. '.. '".:"" :. ' "."'..' ~'' '...' .... . .:.' .".'!.~:: :", ':.. :,..,.c;"'- "::'~ . "C~mmlsslon'Use Oly ..".'-;':,.-'."' ... ' .....-.:..~. '. :,.,'-!..-','i:.' ':". :',~:'~' :",.. ',.'-..'....' · ...:.- "?'" r""APlN'u~nber ' ' 'n I' "¢~ '1~1e' Isee c°ver letter 'P;'~it Numbe ' (:;~' ..~_~,,/--' ~ ~_'~%~" [ 50- 029-21652-01 ~j for other requirements ConditiOns of Approval: Samples Required [] Yes 1~ No Mud LO(. ~ulr~l [] Yes ~' No Hydrogen Sulfide Measures ~ Yes [] No Directional Survey Required ~ Ye.s [] No Required Working Pressure for BOPE [] 2K [] 3K [] 4K [] 5K [] 10K [] 15K ~1~3.5K psi for CTU Other: ORIG, NAL SIGNED [~Y by order of7. Approved By J. Nit, Hetlsser Commissioner the commission Date . Form 10-401 Rev. 12-01-85 ORIGINAL Subl Triplicate BPX Prudhoe Bay Producer G-25A CTD Sidetrack Summary of Operations: G-25 is being sidetracked to improve recovery of lower Zone 1 reserves. This sidetrack will be conducted in two phases. ( ~ Phase 1 Prep Work: Install mechanical whipstock, P&A well, mill window ~ Plans are to begin prep work as early as April 16, 2001 to provide options in the event of an early ~, Kuparuk River breakup. .,.,,1~3'~ ~ · Drift tubing, perform integrity test of inner annulus. " ,x-xc-X / · Install mechanical whipstock at 10168' md ~.-% / · RU service CTU, pump 13.8 ppg bentonite cement to isolate existing perfs. :Y" { · Mill out cement to WS, mill 3.80" window at 10168'. Phase 2: Drill and Complete sidetrack: Plans are to be ready to sidetrack as early as May 4, 2001 to provide options in the event of an early Kuparuk River breakup. Coiled tubing drilling will be used to drill and complete the directional hole as per attached plan. Mud Program: · Phase 1: Seawater for window milling · Phase 2: Flo-Pro (8.5 ppg) for drilling operations. Disposal: · No annular injection on this well. · All drilling and completion fluids and all other Class II wastes will go to Grind & Inject. · All Class I wastes will go to Pad 3 for disposal. Casing Program: ~----%~3b~ ~'~[~ ~ · 3-3/16", 6.2# STL L-80 x 2 7/8", 6.4#, L-80 TCII liner will be run from TD to approx. 9350' MD and cemented with approximately 20 bbls. The 3-3/16" x 2-7/8" XO will be placed -2 joints outside the window at -10230' to provide for future sidetracking opportunities. Top of cement is planned to be at ~9800'. The liner will be pressure tested and perforated with coiled tubing conveyed guns. Well Control: · BOP diagram is attached. · Pipe rams, blind rams and the CT pack off will be pressure tested to 400 psi and to 3500 psi. · The annular preventer will be tested to 400 psi and 2000 psi. Directional · See attached directional plan · Magnetic and inclination surveys will be taken every 30 ft. No gyro will be run. RECEIVED I 4AR 30 2001 ,.,.~ , .& Cons. Commissio. ~, ,~, Logging · A Gamma Ray log will be run in the open hole section. · A Memory CNL may be run in cased hole. Hazards · Lost circulation risk is low. · H2S has not been measured from this well. This is not an H2S Drillsite. Max H2S measurement on the pad is 10 ppm. Reservoir Pressure · Res. pressure is approx. 3100 psi @ 8800 tvd (6.8 ppg EMW) · Max. surface pressure with gas (0.1 psi/ft) to surface is 2200 psi. G-25A Potential Drilling Hazards Post on Rig 1. Please perform pre-job Hazard ID and Safety meetings prior to every change in work scope during the operation. Also, if things don't feel right shut-down the operation and discuss the situation before making the next operational move. SAFETY FIRST. 2. H2S has not been measured from this well. This is not an H2S Drillsite. Max H2S measurement on the pad is 10 ppm. 3. Reservoir pressure is approx. 3100 psi @ 8800 tvd, or 6.8 ppg EMW. 4. Maximum anticipated well head pressure w/full column of gas 2200 psi. 5. Risk of lost circulation is low. 6. Close approach to well G-30 at a wellplan MD of 10,410'. Should not be a problem given that G-30 will be -45' TVD shallower than the proposed wellplan. TREE: 6" McEVOYG2 5 KB. ELEV= 72.40' WELLHEAD: McEVOY i BF. ELEV = 36.50' ACTUATOR: OTIS ---~.~ ~ -.4-1/2 SSSV LANDING NIPPLE , (OTIS) (3.813" ID) Cemented ~ _ I 13 318" 72# -- 12'785 I~l ! k L-80 BTRS I KOP: 1400' MAX ANGLE: 40° @ 8100' 9 5/8", 47#/ft, L-SO, NSSC 15,070 I~ /4-1/2" SLIDING SLEEVE ~ (OTIS XA) (3.813" ~D) I 9,249 4-1/2-12.6# L-80 BTRS (,PC) 1 ~ '~ ~~/TUB~NG SEAL ASS¥. I CAPACITY: 0.01522 BBL/FT ~' ~8-5/8" PACKER i i~' J(TIW)(4'750"ID) I ..... ~ ~ ~ 4-1/2", 12.6#/ft, L-80 TAILPIPE ~4-1/2" "X" NIPPLE (OTIS) (3.813" ID) [9,375 I I I I~ ~4'1/2" "XN" NIPPLE (OTIS) (3'725" ID) 19'416 Top of 5-1/2"Liner ~ Tie-Back Sleeve19,461 I.----4 ' 1 ~ "~ 1/2" TIW SEAL ASSBLYw/o SEALS 19,465 9-5/8", 47#/ft, L-80, BTRS [ 9,724 k '~~'5-1/2"MARKER JOINT I 9,780 · ~. 4" GS Fish Neck to 3-3/8" Baker,~ 0,360 Inflatable Straddle Packer set at . 10,367-10,393 elmd, min ID 1.25" PERFORATION SUMMARY REF. LOG: GEARHART- BHCS 11-29-86 TIE IN LOG: 3-3/8" 10,375- 10,385 ISqzd 8-15-91 Above Perf Straddled 27,8" 4 10,406-10,445 SqzdS-15-91 RE 3 3/8" 6 10,458 - 10,474 Open 8-19-91 PBTD 10,557 [ Alaska 5 1/2", 17#/ft, L-80, TC4S t0,600 I DATE REV. BY COMMENTS PRUDHOE BAY UNIT 1 2-4-86 Initial Riq C0mDletion WELL: G-25 {32-7-11-14) 4-25-93 RDC Set GSO Straddle Packer 11-02-95 BR Pull Staddle Packer APl NO: 50-029-21652 4-23-96 Nords Set Straddle Packer SEC 12; TN 11N; RGE 13E 1/22/99 Nords Update to PC BP Exploration (Alaska) 30 200! ~S Coils.C0~ITIi$$J01~' chorale TREE = 6" McEVOY WELLHEAD= McEVOY ACTUATOR= OT~ KBi = 721~4 KQP = 1400 Max Angi;"= ............. 40"@§i"00' Datum MD = 10338 13-3/8" CSG, 72#, L-80, ID=12.347 Iff 2785' [ 9-5/8" CSG, 47#, L-80, ID=8.681 ['~ 5070' 5070' TOP OF 9-5/8" CSG G-25A i' PROPOSED CTD SIDETRACK 2072' I-I 4-1/2" SSSV OTIS LNDNG NIP, ID:3.813 I 2780' Id C~T~ I 92 e' I-I 4-1/2" OTIS XA SLIDING SLV, ID=3.813 I Minimum ID = 1.25" @ 10360' STRADDLE PACKER TOP OF PROPOSED 3-3/16" LINER Iff 9350' 9308' I-I 9322' I-i 9375' H TIW SBR TBG SEAL ASSY I 9-5/8" x 4-1/2" TIW PKR, ID=4.750 I 4-1/2" OTIS X NIP, ID=3.813 I --~ 9416' I-I 4-1/2" OTIS XN NIP, ID:3.725, EMD:9414'] 4-1/2" TBG, 12.6#, L-80, 0.0152 bpf, ID:3.958 Id 9460' [-- ELMD TBG TAIL 9465' Id 5-1/2" TIW SEAL ASSY W/O SEALS 9461' 9-5/8" CSG, 47#, L-SO, ID=8.681 I--I 9724' IMARKERJ°'NT Id 9780' Mill Window off Mechanical Whipstock ['--[ 10168' I3-3/4" Open Hole 10230' I--~ 3-3/16"X2-7/8" PERFORATION SUMMARY REF LOG: BHCS on 11/29/86 ANGLE AT TOP PERF:I 27 @ 10375' I Note: Refer to Production DB for historical perf data SIZE 3 3/8 2 7/8 3 3/8 SPF INTERVAL OPN/SQZ DATE 1 10375 -10385 S 08/15/91 4 10406-10445 S 08/15/91 6 10458-10474 O 819/91 I2-7,.'8". 4.6#. L-80. STL LINER- Cemented & Perforated [ 10360' 4" GS FISH NECK TO 3-3/8" BAKER INFLATABLE STRADDLE PACKER SETAT 10367-10393' ELMD, MIN ID=1.25 I ~TDI-"I 1o557' P&A'd w/13.8 ppg Cement I 5-1/2" LNR, 17#, L-80, 0.0232 bpf, ID:4.892 10600' DATE REV BY COMMENTS 12/4/1986 ORIGINAL COMPLETION 2/15/2001 SIS-lsl CONVERTED TO CANVAS ... 03/01/01 SIS-MD FINAL 03/29/01 PCR CTD Proposed Sidetrack PRUD , PERMIT No: 86-1620 A PI No:~:~2~5~e1 Sec. 7, T11 N, R14E B~-~i~t~,~§! C0mmis~' OqW~e ObP BP Amoco Baker Hughes INTEQ Planning Report LLNTFQ Company: BP Amoco Field: Prudhoe Bay Site: PB (3 Pad Well: (3-25 Wellpath: Plangl04 (3-25A Date: 3/29/2001 Time: 11:03:32 Page: 1 Co-ordinate(NE) Reference: Well: (3-25, True No~th Vertical (TVD) Reference: System: Mean Sea Level Section (VS) Reference: Well (0.00N,0.00E,305.00Azi) Survey Calculation Method: Minimum Curvature Db: Oracle Field: Prudhoe Bay North Slope UNITED STATES Map System:US State Plane Coordinate System 1927 Goo Datum: NAD27 (Clarke 1866) Sys Datum: Mean Sea Level Map Zone: Alaska, Zone 4 Coordinate System: Well Centre Geomagnetic Model: B(3GM2000 Site: PB (3 Pad TR-11-13 UNITED STATES: North Slope Site Position: Northing: From: Map Easting: Position Uncertainty: 0.00 ft Ground Level: 0.00 ft 5966832.87 ft Latitude: 70 18 58.211 N 656301.39 ft Longitude: 148 43 59.013 W North Reference: True Grid Convergence: 1.19 deg Well: G-25 Slot Name: 25 G-25 Well Position: +N/-S 2158.16 ft Northing: 5969032.00 ft Latitude: 70 19 19.434 N +E/-W 1998.11 ft Easting: 658254.00 ft Longitude: 148 43 0.699 W Position Uncertainty: 0.00 ft Wellpath: Plan#104 G-25A Drilled From: G-25 500292165201 Tie-on Depth: 10168.00 ft Current Datum: 31: 25 11/17/1986 00:00 Height 72.40 ft Above System Datum: Mean Sea Level Magnetic Data: 3/29/2001 Declination: 26.70 dog Field Strength: 57477 nT Mag Dip Angle: 80.79 dog VerticaISection: Depth From (TVD) +N/-S +E/-W Direction ft ft ft deg 0.00 0.00 0.00 305.00 Plan: Plan #104 Date Composed: 3/29/2001 Version: 1 Principal: Yes Tied-to: From: Definitive Path Targets Map Map <-- Latitude ---> <-- Longitude --> Name Description TVD +N/-s +E/-W Northing Easting Dog Min Sec Dog Min Sec Annotation MD · · 'TVD ." 10100.00 8589.59 TIP 10168.00 8649.41 KOP 10304.00 8762.08 1 10439.41 8845.70 2 10574.58 8896.66 3 10708.97 8913.79 4 RECEIVED 11079.54 8914.73 5 11409.78 8936.24 6 11544.40 8945.07 7 MAR 50 2001 11669.34 8945.88 8 11969.47 8947.84 9 Alaska 0il & Gas Cons. Commissk 12245.00 8906.39 TD Plan Section Information 10100.00 28.62 107.31 8589.59 -106.78 4625.38 0.00 0.00 0.00 10168.00 28.18 107.31 8649.41 -116.40 4656.26 0.65 -0.65 0.00 10304.00 45.81 177.05 8762.08 -177.55 4691.08 31.60 12.96 51.28 10439.41 61.53 229.19 8845.70 -269.49 4646.30 32.51 11.61 38.51 10574.58 76.13 274.15 8896.66 -305.36 4530.10 32.62 10.80 33.26 80.34 ObP BP Amoco Baker Hughes INTEQ Planning Report Company: BP Amoco Field: Prudhoe Bay Site: PB G Pad Well: G-25 Wellpath: Plard¢104 G-25A Date: 3/29/2001 Time: 11:03:32 Page: 2 Co-ordinate(NE) Reference: Well: G-25, True North Vertical (TVD) Reference: System: Mean Sea Level Section (VS) Reference: Well (0.00N,0.00E,305.00Azi) Survey Calculation Method: Minimum Curvature Db: Oracle Plan Section Information MD Incl Azim TVD +N/-S +E/-W DLS Build Turn TFO Target ft deg deg ft ft ft deg/100ft deg/100ft deg/100ft deg 10708.97 89.85 316.26 8913.79 -249.33 4412.78 32.65 10.21 31.33 75.35 11079.54 89.87 278.36 8914.73 -82.39 4089.49 10.23 0.01 -10.23 269.98 11409.78 82.87 311.88 8936.24 55.09 3795.38 10.34 -2.12 10.15 102.58 11544.40 89.63 323.51 8945.07 154.25 3705.21 9.97 5.02 8.64 60.26 11669.34 89.63 336.01 8945.88 261.96 3642.41 10.01 0.00 10.01 90.04 11969.47 89.64 305.01 8947.84 490.76 3453.87 10.33 0.00 -10.33 269.92 12245.00 107.54 326.23 8906.39 682.70 3264.36 9.98 6.50 7.70 48.35 Survey MD Incl Azim SSTVD N/S E/W MapN MapE DLS VS TFO Tool ft deg deg ff ft ft ft ft deg/100ft ft deg 10100.00 28.62 107.31 8589.59 -106.78 4625.38 5969022.78 662880.27 0.00 -3850.14 0.00 TIP 10125.00 28.46 107.31 8611.55 -110.33 4636.78 5969019.47 662891.75 0.65 -3861,52 180.00 MWD 10150.00 28.30 107.31 8633.55 -113.87 4648.13 5969016.17 662903.16 0.65 -3872.84 180.00 MWD 10168.00 28.18 107.31 8649.41 -116.40 4656.26 5969013.81 662911.34 0.65 -3880.95 180.00 KOP 10175.00 27.90 111.98 8655.59 -117.50 4659.36 5969012.77 662914.46 31.60 -3884.12 99.31 MWD 10200.00 28,21 128.81 8677.69 -123.41 4669.40 5969007.08 662924.63 31.60 -3895.73 95.19 MWD 10225.00 30.47 144.31 8699.51 -132.27 4677.72 5968998.40 662933.13 31.60 -3907.63 80.31 MWD 10250.00 34.29 157.26 8720.64 -143.93 4684.15 5968986.87 662939.81 31.60 -3919.59 66.78 MWD 10275.00 39.20 167.63 8740.69 -158.17 4688.57 5968972.74 662944.53 31.60 -3931.37 55.82 MWD 10300,00 44.86 175.89 8759.27 -174.71 4690.90 5968956.25 662947.20 31.60 -3942.77 47,50 MWD 10304.00 45.81 177.05 8762.08 -177.55 4691.08 5968953.41 662947.44 31.53 -3944.55 41.44 1 10325.00 46,54 186.46 8776.64 -192.66 4690.61 5968938.30 662947.29 32.51 -3952.83 87.17 MWD 10350.00 48.37 197.22 8793.57 -210.63 4686.81 5968920.25 662943.88 32.51 -3960.03 80,64 MWD 10375.00 51.14 207.24 8809.74 -228.24 4679.58 5968902.50 662937.02 32.51 -3964.20 73.36 MWD 10400.00 54.70 216.40 8824.83 -245.13 4669.05 5968885.39 662926.85 32.51 -3965.27 66,87 MWD 10425.00 58.89 224.73 8838.54 -260.97 4655.44 5968869.26 662913.58 32.51 -3963.20 61.34 MWD 10439.41 61.53 229.19 8845.70 -269.49 4646.30 5968860.56 662904.62 32.48 -3960.60 56.81 2 10450.00 62.16 233.04 8850.70 -275.35 4639.03 5968854.55 662897.47 32.62 -3958.01 80,34 MWD 10475,00 64.07 241.93 8862.02 -287.30 4620.25 5968842.20 662878.95 32.62 -3949.48 78.52 MWD 10500.00 66.50 250.51 8872.49 -296,43 4599.49 5968832.63 662858.39 32.62 -3937,71 74.49 MWD 10525.00 69.38 258,74 8881.89 -302.55 4577.17 5968826.04 662836.20 32.62 -3922.94 70.90 MWD 10550.00 72.64 266,65 8890.04 -305.54 4553.75 5968822.56 662812.85 32.62 -3905.46 67.81 MWD 10574.58 76.13 274,15 8896.66 -305.36 4530.10 5968822.25 662789.21 32.64 -3885.99 65.24 3 10575.00 76.16 274,29 8896.76 -305.33 4529.69 5968822.27 662788.80 32.65 -3885.64 75.35 MWD 10600.00 78.36 282.35 8902.28 -301.80 4505.59 5968825.29 662764.63 32.65 -3863.87 75.32 MWD 10625.00 80.78 290.28 8906.81 -294.89 4482.02 5968831.70 662740.92 32.65 -3840.60 73.54 MWD 10650,00 83.36 298,09 8910.27 -284.75 4459.45 5968841.36 662718.14 32,65 -3816.30 72.10 MWD 10675.00 86.07 305.83 8912.58 -271.58 4438.35 5968854.08 662696.77 32.65 -3791.46 71.02 MWD 10700,00 88.85 313.51 8913.69 -255.65 4419.14 5968869.60 662677.23 32.65 -3766.59 70.30 MWD 10708.97 89.85 316.26 8913.79 -249.33 4412.78 5968875.79 662670.74 32.61 -3757.75 69.96 4 10725,00 89.85 314.62 8913.83 -237.91 4401.53 5968886.97 662659.25 10.23 -3741.98 269,98 MWD 10750.00 89.85 312.06 8913.90 -220.75 4383.35 5968903.74 662640.72 10.23 -3717.25 269.98 MWD 10775,00 89.85 309.51 8913.96 -204.42 4364.42 5968919.66 662621.45 10,23 -3692.38 269.99 MWD 10800.00 89.85 306.95 8914.03 -188.96 4344.79 5968934.71 662601.49 10.23 -3667.42 270.00 MWD 10825,00 89.85 304.39 8914.10 -174.38 4324.48 5968948.85 662580.88 10,23 -3642.43 270.00 MWD 10850,00 89.85 301.83 8914.16 -160.72 4303.54 5968962.06 662559.66 10.23 -3617.44 270.01 MWD 10875.00 89.85 299.28 8914.23 -148.02 4282.01 5968974.31 662537.87 10.23 -3592,52 270.02 MWD 10900.00 89.85 296.72 8914.29 -136.28 4259.94 5968985.58 662515.56 10.23 -3567.71 270.02 MWD 10925.00 89.85 294.16 8914.36 -125.54 4237.37 5968995.84 662492.77 10,23 -3543.06 270.03 MVVD 10950.00 89.86 291.60 8914.42 -115.82 4214.34 5969005.07 662469.54 10.23 -3518.62 270.04 MWD 10975.00 89.86 289.05 8914.48 -107.14 4190.89 5969013.26 662445.92 10.23 -3494.43 270.04 MWD 11000.00 89.86 286.49 8914.54 -99.51 4167.09 5969020.38 662421.96 10.23 11025.00 89.86 283.93 8914.60 -92.96 4142.97 5969026.43 662397.71 10.23 MAR 30 2001 Obp ( BP Amoco Baker Hughes INTEQ Planning Report I~111 Company: BP Amoco Field: Prudhoe Bay Site: PB G Pad Well: G-25 Wellpath: Plargfl04 G-25A Date: 3/2912001 Time: 11:03:32 Page: 3 Co-ordinate(NE) Reference: Well: G-25, Tree North Vertical (TVD) Reference: System: Mean Sea Level Section (VS) Reference: Well (0.00N,0.00E,305.00Azi) Survey Calculation Method: Minimum Curvature Db: Oracle Survey MD Incl Azim SSTVD N/S E/W MapN MapE DLS VS TFO Tool ft dog deg ft ft ff ft ff deg/100ft ff deg 11050.00 89.87 281.37 8914.66 -87.48 4118.58 5969031.39 662373.21 10.23 -3423.92 270.06 MWD 11075.00 89.87 278.82 8914.72 -83.10 4093.96 5969035.25 662348.51 10.20 -3401.24 270.08 MVVD 11079.54 89.87 278.36 8914.73 -82,39 4089.49 5969035.86 662344.02 10.20 -3397.17 270.09 5 11100.00 89.41 280.42 8914.86 -79,05 4069.31 5969038.77 662323.78 10.34 -3378.72 102.58 MWD 11125.00 88.85 282.95 8915.24 -73.99 4044.83 5969043.32 662299.20 10.34 -3355.77 102.57 MWD 11150.00 88.29 285.47 8915.86 -67.85 4020.60 5969048.94 662274.85 10,34 -3332.41 102.53 MWD 11175.00 87.73 288.00 8916.73 -60.66 3996.68 5969055.63 662250.78 10,34 -3308.68 102.47 MWD 11200.00 87.18 290.53 8917.84 -52.42 3973.10 5969063.37 662227.04 10,34 -3284.64 102.38 MWD 11225.00 86.63 293.06 8919.19 -43.15 3949.93 5969072.14 662203.67 10.34 -3260.34 102.27 MWD 11250.00 86.09 295.59 8920.78 -32.88 3927.19 5969081.94 662180.73 10.34 -3235.83 102.13 MWD 11275.00 85.56 298.13 8922.60 -21.62 3904.95 5969092.73 662158.26 10.34 -3211.15 101.97 MWD 11300.00 85.04 300.67 8924.64 -9.39 3883.24 5969104.49 662136.30 10.34 -3186.35 101.78 MWD 11325.00 84.53 303.21 8926.92 11350.00 84.02 305.76 8929.41 11375.00 83.53 308.31 8932.12 11400.00 83.05 310.87 8935.04 11409.78 82.87 311.88 8936.24 3.78 3862.12 5969117.21 662114.90 10.34 -3161.49 101.58 MWD 17.87 3841.62 5969130.86 662094.11 10.34 -3136.62 101.34 MWD 32.83 3821.78 5969145.41 662073.96 10.34 -3111.79 101.09 MWD 48.65 3802.65 5969160,82 662054.50 10.34 -3087.04 100.81 MWD 55.09 3795.38 5969167,10 662047.10 10.42 -3077.40 100.39 6 11425.00 83.62 313.21 8938.03 65.31 3784.24 5969177.08 662035.75 9.97 -3062.41 60.26 MWD 11450.00 84.87 315.38 8940.54 82.68 3766.44 5969194,07 662017.59 9.97 -3037.87 60.10 MWD 11475.00 86.13 317.54 8942.50 100.74 3749.27 5969211.77 662000.05 9.97 -3013.44 59.89 MWD 11500.00 87.38 319.69 8943.91 119.47 3732.77 5969230.14 661983.16 9.97 -2989.19 59.72 MWD 11525.00 88.65 321.84 8944.78 138.82 3716.97 5969249.15 661966.95 9.98 -2965.14 59.60 MWD 11544.40 89.63 323.51 8945.07 154.25 3705.21 5969264.33 661954.87 9.98 -2946.66 59.53 7 11550.00 89.63 324.07 8945.11 158.77 3701.90 5969268.78 661951.47 10.01 -2941.35 90.04 MWD 11575.00 89.63 326.57 8945.27 179.33 3687.68 5969289.03 661936.81 10.01 -2917.91 90.04 MWD 11600.00 89.63 329.08 8945.43 200.48 3674.37 5969309.90 661923.06 10.01 -2894.87 90.02 MWD 11625.00 89.63 331.58 8945.59 222.20 3661.99 5969331.35 661910.23 10.01 -2872.28 90.00 MWD 11650.00 89.63 334.08 8945.75 244.44 3650.58 5969353.34 661898.35 10.01 -2850.17 89.99 MWD 11669.34 89.63 336.01 8945.88 261.96 3642.41 5969370.68 661889.82 9.98 -2833.43 89.97 8 11675.00 89.63 335.43 8945.92 267.12 3640.08 5969375.79 661887.38 10.33 -2828.57 269.92 MWD 11700.00 89.63 332.84 8946.08 289.61 3629.18 5969398.05 661876.00 10.33 -2806.73 269.92 MWD 11725.00 89.62 330.26 8946.24 311.59 3617.27 5969419.77 661863.64 10.33 -2784.37 269.94 MWD 11750.00 89.62 327.68 8946,41 333.01 3604.38 5969440.91 661850.30 10.33 -2761.53 269.96 MWD 11775.00 89.62 325.10 8946.57 353.83 3590.54 5969461.43 661836.03 10.33 -2738.25 269.97 MWD 11800.00 89.62 322.51 8946,74 374.00 3575.78 5969481.29 661820.84 10.33 -2714.59 269.99 MWD 11825.00 89.62 319.93 8946,90 393.49 3560.13 5969500.44 661804.78 10.33 -2690.59 270.01 MWD 11850.00 89.62 317.35 8947.07 412.25 3543.61 5969518.85 661787.87 10.33 -2666.30 270.03 MWD 11875.00 89.63 314.76 8947.23 430.25 3526.26 5969536.47 661770.15 10.33 -2641.76 270.04 MWD 11900.00 89.63 312.18 8947.39 447.45 3508.12 5969553.29 661751.65 10.33 -2617.04 270.06 MWD 11925.00 89.63 309.60 8947.55 463.81 3489.22 5969569.25 661732.42 10.33 -2592.17 270.08 MWD 11950.00 89.64 307.02 8947.71 479.31 3469.61 5969584.32 661712.48 10.33 -2567.22 270,09 MWD 11969.47 89.64 305.01 8947.84 490.76 3453.87 5969595.44 661696.51 10.31 -2547.76 270.06 9 11975.00 90.01 305.42 8947.86 493.95 3449.35 5969598.53 661691.92 9.98 -2542.23 48.35 MWD 12000.00 91.66 307.29 8947.49 508.77 3429.22 5969612.92 661671.49 9.98 -2517.24 48.35 MWD 12025.00 93.32 309.16 8946.41 524.22 3409.60 5969627.95 661651.54 9.98 -2492.30 48.38 MWD 12050.00 94.97 311.03 8944.60 540.27 3390.53 5969643.60 661632.14 9,98 -2467.47 48.46 MVVD 12075.00 96.62 312.91 8942.07 556.91 3372.04 5969659.84 661613.30 9.98 -2442.78 48.59 MVVD 12100.00 98,26 314.81 8938.83 574.08 3354.16 5969676.63 661595.07 9.98 -2418.29 48.78 MWD 12125.00 99,89 316.72 8934.89 591.77 3336.94 5969693.95 661577.48 9.98 -2394.04 49.03 MWD 12150.00 101,51 318.65 8930.25 609.93 3320.41 5969711.76 661560.57 9.98 -2370.08 49.33 MWD 12200.00 104.71 322.58 8918.90 647.55 3289.51 5969748.72 661528.89 9.98 -2323.1 1 ObP BP Amoco Baker Hughes INTEQ Planning Report tNTEQ Company: BP Amoco Date: 3/29/2001 Time: 11:03:32 Page: 4 Field: Prudhoe Bay Co-ordinate(NE) Reference: Well: G-25, True North Site: PB G Pad Vertical (TVD) Reference: System: Mean Sea Level Well: G-25 Section (VS) Reference: Well (0.00N,0.00E,305.00Azi) Wellpath: Plan#104 G-25A Survey Calculation Method: Minimum Curvature Db: Oracle Survey MD Incl Azim SSTVD N/S E/W MapN MapE DLS VS TFO Tool ff deg deg ff ft ff ft ft degll00ft ff deg 12225.00 106.29 324.60 8912.22 666.93 3275.21 5969767.80 661514.19 10.00 -2300,36 50.58 MWD 12245.00 107.54 326,23 8906.39 682.70 3264.36 5969783.33 661503.00 10.00 -2282.43 51.12 TD RECE[VED MAR 50 2001 ~k.~ska Oil & Gas Cons. Com$iss; Anchorage BP Amoco O bp Pta~04 G-25A Magnetic Fieldl Conlar, I Informa!lor, Skength: 57477nT ! WELLPATH DETAILS DipAngle: 80.79° ! D,recl. (907) 267-6b 13 Date: 3/29/2001 J E-m:aiJ br,j polr,,sLS~ird,,~';!.C~m Plan#104 G-25A -~'~ Model: BGGM2000 J Baker H 500292165201 Parent Wellpath: G-25 Tie on MD: 10168.00 , . .... . .... ~ .. ~ ~ ~ : , ; . ~ ........ · 11rv-~---:l-.~. '&..._.i:4...L~.i~'&~...~ :.:.¥¥.-:~-{*i:'.:~..-c ::.:..~...! ..... :.~'.~.~.~.~:.F?~:o....'~?=..-...~....'-...+'-..:..-~ ..... :T?*? ~-..--~ ~-. ..... !~ .... ! ...... ! ...... ,. ..... ! ............ Ref. Da~Ri~m:: 31:25111171198600:00 72.40ff '~ ~:':~ ,"~' i '~';i ,:"i ,':', :'~'"; ..'.:' ~ L'!".~ .:" "~!..' ~;" '~.".'.'.} '.'i '" ".'"~ ~ . : ; ; i ; , ~:;.-~.:'~:':' ';~:~ ~':": ;:::.[ .~'.:.: q'.;' .!:: 'i:i:: '/., ::'.! ::..'i ':..: ~:';~'.~ ':. -~ - ~- ~, -; : ; ~ '--~.~.--,+<~:-~r~-=.,~.=.'~-=-~r-q¥=':=c=.'. c:::'~'i""q ,~.~ '? ? :: i ~ ~ ~ . V.SectionOrigin Origin Starting lu~v~ '~ 'c . '~' ~' ~ '.' . · .~ . . ~. : . . ~ I ] Angle +N]-S +F_J-W From 'I'VD · ; ~ ~. i..: '.'.. L, =.., .. ~ .- .. =.' · ~ ' · ·: '.', .-; .: : ~ ~' - } ' ~ , ' · : ', , ..... =". .,".'.?~"' ..r. :!'. .'i.:~...~ ','.h '.:'.~:~ .:': Li." ~." L.' .; ~ ~' ~...L.~.~.~ ........ ~ ..... 4- -~ ~ ...... ~ ..... 305.00" 0.00 ' 0.00 0.00 900~"~£;'"'~4L.'-'~-'~2~}"; ..... ; ....... { ....... i.!-...~ ...... ;.,.-;~.-~.o~-~--.~.-~.--?r ...... ;:---.--?~.~=-%~--~- ·: ~ ~ ; , , ~ : i , - '1 _;'"~ ; i ~'~ ~ ~'~ ."~ ..... [ .... .: ..'.'~ : ..: ~...' ~.'. ..:; .' : -.--,' . . ;-,. . i ~' , ,, . , REFERENCE INFORMATION p~!.'..i..[.!.L.~:~..~.~.'~ii.~..~i~o.~._'i:i.L~_-~[X..~4~ ¥..i.~.;!....~.i.~--Z...i~ ...... i--~=!:i--=-iL:Xi.~.. ,~-~---~m: .... X__~L:.,.-r~J .... f.~ ...... ~ .....i .... -J ...... '. '"~.'i .",': ~..'.: '.' ~".i"' ~ ' ~E : ' .! :i: ~ ~ ''" .~ . : :i .; .~ i ~ ~ ! I Co-ordinate (N/E) Reference: WellCentre:G-25, TrueNorth -~ ~ .~.:... ~; ~..' ~.:. a.h ~.' ..... .~.. '.!- ..! .~, '.:' ' .'' :' _r , .... ' ' ' VerlJcel (TVD) Reference: System: Mean Sea Level ~.~ _ ~.:' ~.~..;.' .~.~....~.~..'.~.~..,.~.'~£.~x.~ ....... 2~.~....~2~.;;.?.~.~L:; ~..;...-'.~..;~: ....... f---' ~ ..... ~'U ~T". ~~-' ........? ..... ~ ..... b ....~ ...... . ........ !~ .... ~ .......... ~ . SecUon(VS)Reference: Slot- 25 (0.00N,0.00E) ~J-4 -.:..;..~' .... :"' ;..'' ;' ~ .', · · : '~.." , :'. ' .... :" "' ': .;.' . ,'T' '. ~' , .'~ .' '~ . ::' '-', ; · J .. . ~ ~ · ..~ : ! :. ~ .~ . '. : ': ~ Measured Depth Reference: 31:2511/17/198600:00 72.40 ~ '.:.' i '¥ .'i.:.; I ...... ~.~i~_~ .~.~.~.;.~..I:_.....~..~.~..:~.~.~:;~.~2._~..~.~. :L_.o.~L_ ..... ~ ....... i-'r---q ...... ~ .....,'.'- CalculaUonMethod: Minimum Curvature i~e-- RP/~.--J - ' ~;"7-'i-"--="-¢-°"~i~?°":.-' ~-'- '~}..'"'1'¥71~.~.~- .,....7. ..: .~ ..... · : .- ~:. ~ : , , , ,~_-"":J . ,:':":"~ ..¥' ?' : :"~:~.": '~.. "L-:'~X,:: :.':' .~. ..i .' i ~.-i ~ · '," ', ' ; ] ,~ ~'~'~ ~,' ~ :I '!'.i". ?". !:~..:i'.~ !.',-' i. :.' F~' .r~,, .~ .... L:__~:L,.,,~:..L.~L_=LX= ....... 'L-:---.J ..... ~--:~.-~ .... ~ ..... ~ ..... ANNOTATIONS ~._ ~ ~J ..~ :. ,..: .... ~~. ,~...', .: . .. . ... , , ~o. wO ~ ~o~.~o. j .~ ~" ~ .... r'r!TM ?-??~'~Ti:C~Tr~'"."TT "'~: :~?~ '~ · '~ ': i ' ~ ~ : ' ' .~... : .~. : .... ., :.. :. :... = .... . _ ~ . ~. ~ ~ ~ : ; ' 2 ~r~9.4~ 10~.00 KOP ~ ~,-4UU'-q ........ ~...~· ~~-~:. ..~- ~ .... ~.~. ? ~ .... · .. ~ ' ~ ' . ~ , ~ ; 4 ~i~g. Tb m439.4~ ~ I ~..~ ~ ~ · ' ........ ~':: ......... T.:'"'TT:"':'F.'~' ' FT. ~'~}' ;}' .~-~- ~ [.~~ ~ ,,' ;::.~':':';.[.'~.: ..V.: ~"q ~'":~': ":'[~'. ~:~. '":"(. -' [ :.. O-1~ ..... +"~? .......... ~"r ...... f~ ....... [': ........ f.~-.' : : ~.?.;:..~{:.':' ~;-:.'.'( ~: ~.:. t:"~:~. "'~'~ ./_;z ""J':....:..:.'~.b. ~ ."':.""~ - ":'~ '"::~"' "q' ' '~' ": : ' ', : '-~'~-"'~ ........ 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" ,' :. · ' : .... ~ · .', .... ,,,. ~..~'.: .... ~:';~ ~ .... ~"- -~'-~'~'+~ .......... ~"q'="+~"~" West(-)/East(+) [~OOft/in] . -~.~.~::'~ ~ · .'~" ~1'. 'f': '~::~ ::". ~L:.'_b.,_:.:~+~..~-~ =~-.~.: ~:~-~-.-~ ........ ~ ...... ~-:-~-~ ...... ~ ;... ,,~.. ~.. ~. . ..:~ ~ · ~ ~ . ~. ~. ~ . , ~:.- ~.. ,..:.:.'v.' .'".." ~ ',":':.'~ :'¢ .""' .'-~' :": :"{'~ ·" .':" .t"' :' -.'] - :~ :. ~ ' - ~ ' ~ ' , ' ~ _ : .~: _ ~_ _..:, __~ . ~':'' ~.'~"'"~ "'"~ ."~" ':" :~' .. ~:' '-~" '":-'-'r:' .~.:.:· r, ~..' ' ~.' . ~...~--.' .', ~' ~ ........ - ~ ........ ~ ...... ; .....~ ~_~.~ .....~ .... ~ ...........~ F ....... . .::~L~.~.:L..._,..L::~....~(L.~b~:'~:~....:~..~?L~..c~:F.<.:¥:~:~: .... ~ ...... ~:.=~..~ ...... ~. : ...~-.~.~-~.~- q ~ ~ ~ :.. .: ...'~ ,:'.' '~ .~.'~ . ': ' .~' , ~ · '. . ~..;: :~ .... .: . ,... ~.~ ... , - . . :. -~. - ~ ~ '~-''' '~.' ~','' ':." ~ :Y'(' ~"~ '~F" ~ ": ~:'~ --~. ''~' '' '~'~"'''~ ' : '-~ '~ '* ' ~ ' ~ ~ -'A'"'...:.F' ,~ .'.~ · _' .::'~ ': · ~ : ~ ~ ~ ...... ~ ....~ ........ : ..... ~ .....~ ....~ ....... ~ ..... : ~.-{ ........ ~";~ '" · ";' ::'. ~::: '~:';:' ~ ';"; ~ :~':'~ -':':.'" --~'~- -~--~;.~-.---~.~ ........ ~ ~.~.,,~.~.~ ~=~' .... r':-~r'-~-~*---~ :. ' ~ i~,~ ~.':. ~.,. ~ · ·.: ~ ~ . . , , ' ~". ".~ ~:". ~ I ' '~ ::'~ : ..~ ~ ~-~.--~ ..... ~ ............. ~ ~'-~- ........... "~-.~ '-'~ ':'" ' ~' ~' ~:"" ~ :' ~'~':;.'.~ -: :":;....--~ ..'~ : ' ~ ~/ ~~.-~ ~ ..... 1- -- ,=+~:.'~4':.'..-4.*.:;:: q+'~-'--¢+-'--:.;~=+u ~-;-:~ ,':: i"?--~: ....................................... ~ ' -~-.~:--'::"--~?~ "~'~'=~ ........ ?7 ......... " '~ ~'"'" : · ~ ~ ; : ; .. ..., . ,. , ~ - ... ~ .. .~. ~ ~. ~ . ~: . ,.. ~ .~.,; : ,..., .. ..,., .~., . ~..: .~:'~ -.~ .'.'~'· ' ,~ ,. . ' ,:'~ ~ ~.-~- ~_ "~ '~ .( ' ~ ~ [ _ L .... ~.~ ~.. , ; ,. .-~ , · ,.~. .~ .' , ...~ ~ .'c ~ .... .~ ' . .. , . ~ . ~ , ',: ~m=' :~'-~'F-~='? ..... t~=:'' "r=':'"r-=~'~'~== '~'~?:r"~:'"'.'"-=; ?.-;.: ~q~"-~d"~q--~"~' ........ ~'~-"~q~-'-"~ .... ~' · r ~ , · , · ''~ :- ~ " ; ' ~ '.~ "'.!, .':~ ;~'}."~', .... ~';:"",' ',:~' : ' ",;"' ~: '.[ ",:-~'~, ' -" ' ~' ,' .' ~ - '[' ~ ~ ', ~_.:......_~: L '..~.....:...'...2~ ~..._..~..~ ~.x.L.. · .: ~ · ~ ,~*. : ~ ~ ~ ~ ', ~ . : J ........ ~' " ' ......' '~' ' " ' .... .i:';'~.. ': " .~'..'. c...:t. ,.:~. .-'F. ~.. i', . :''.:..~.'." :..( ....'..~ - .~.' 4050 ~ -3950 -3~ -~-38~ -37~ -37~ -3650 -36~ -3550 -3~-~50 -~ -33~ -33~ -32~ -32~ -31 ~-31~ -~ -3~ -29~ -2~ -2850 -28~-27~ -27~ -26~ -2~ -25~ -2~ -24~ -24~-2350 -23~ -~ -~ -2150 Ve~ic~l Section at ~0~,00' [~Oft/in] 3/29/2001 1:34 ~M 2 3/8" CT ~ I I 10,000 psi SLB/Nordic CT Drilling & Completion BOP 7 1/16" , Pipe/Slip ~ 2 3/8" ~~_ _~_ - L~~ Pipe/Slips ~~ 2 3/8" SWAB OR MASTER VALVE I DATE I t CHECK NO. H 184351 VENDOR ALASAAOILA i DATE INVOICE / CREDIT MEMO DESCRIPTION GROSS DISCOUNT NET 012901 CKOi290iL 100. O0 100 PYMT :-OMMENTS: Per,nit To D~iti tee HANDLING INST: S/H- Te~ei Hubb[e X4628 THE A~ACHED CHECK IS IN PAYME~ FOR ~US DE~RIBED ABOVE. ~e]fil~ ~ 1 OO. OO 100 BP EXPLORATION (ALASKA)?. INC. · P.O. BOX. 196612 '"":"~:'~: ANCHORAGE, ALASKA. 99519-6612 ...... Fi!~IST NATIo,.N'~L BANK :OF ASHLAND ' '..":; : ':' .:AN:AFI~LIATE. _...o~ ~: ' ":.:?!:i. ::..:.. NA3:ION,~L:~ITY.BA.NK :':: :::' ':: ,'};;. ': .i'.i:'::Ii,:5~:38~9 ::. :'~ 'iI~:: : :;: I 412 No. H 18zt3 CoNsOuD^:rED COMMERCIAL ACC '00184351 PAY TO The ORDER 0~ .. ONE .HUNDRED.:. & ,,..,.oO./1.***************************************** .US. DOLLAR '" i ;:: .... .:,..::" '":,.::'i,."'.!':!:,:"" DATE '.:":'"?..: '":..' ":,' :' AMOUNT "[ O2/21/O1 ] t $1OO. O ALASKA O I L AND OAS:':, · :;? .'.:::ii; .... : :.".....',.::::. ...... :::.:...:.:.. NOT:";VALID. AFTER 120 DAYS 333 WEST 7TH AVENUE"." SUITE'i:?,IO0 '?,,,, .... ".~ ,/" ,.::,j,,,:,:, ,.,, 5 ,'. ANCHORAGE m'-Om., WELL PERMIT CHECKLIST COMPANY ./~',~ WELL HAME'al' · FIELD & POOL ~' .~-~,,'3,)._~' ,~ INIT CLASS ,~,_)~,,'/-.,.¥"~// (~"E, QL AREA ADMINISTRATION 1. Permit fee attached ....................... Y ~1 2. Lease number appropriate ................... Y .~1 3. Unique well name and number .................. Y N 4. Well located in a defined pool .................. Y N 5. Well located proper distance from drilling unit boundary .... Y N 6. Well located proper distance from other wells .......... t Y N 7. Sufficient acreage available in drilling unit ............I Y N 8. If deviated, is wellbore plat included ............... Y .N 9. Operator only affected party .................... Y N 10. Operator has appropriate bond in force ............. Y N 11. Permit can be issued without conservation order ........ , Y N ~ ,?/D/~,,~,,5 12. Permit can be issued without administrative approval ...... ~/'N _ ...- / 13. Can permit be approved before 15-day wait ........... N ENGINEERING 14. Conductor string provided ................... N~,) 15. Surface casing protects all known USDWs ........... Y 16. CMT vol adequate to circulate on conductor & surf csg ..... Y 17. CMT vol adequate to tie-in long string to surf csg ........ Y 18. CMT will cover all known productive horizons .......... {~ N 19. Casing designs adequate for C, T, B & permafrost .......~ N . 20. Adequate tankage or reserve pit ................. N 21. If a re-drill, has a 10-403 for abandonment been approved... N 22. Adequate wellbore separation proposed ............. N 23. If diverter required, does it meet regulations .......... 24. Drilling fluid program schematic & equip list adequate ..... 25. BOPEs, do they meet regulation ................ N ~ DATE 26. BOPE press rating appropriate; test to '~, 5'~Or,..% psig. . · ....... c~l~'h 27. Choke manifold complies w/APl RP-53 (May 8'~,) ' 28. Work will occur without operation shutdown ........... 29. Is presence of H2S gas probable ................. -~'~,,~ rt.,. o(',,,~-'~, GEOLOGY 30. Permit can be issued w/o hydrogen sulfide measures .....~N ~ Y' "~' ~ ¢ 31. Data presented on potential overpressure zones ........ 32. Seismic analysis of shallow gas zones ............. ~~"'~A"'PJ::'R _D~TE~/ 33. Seabed condition survey (if off-shore) ............. //Y N / 34. Contact name/phone for weekly progress reports [exploratoryo~y] Y N ANNULAR DISPOSAL35. With proper cementing records, this plan (A) will contain waste in a suitable receiving zonei ....... Y N APPR DATE (B) will not contaminate freshwater; or cause drilling waste... Y N to surface; (C) will not impair mechanical integrity of the well used for disposal; Y N (D) will not damage producing formation or impair recovery from a Y N . ,//'" pool; and ~~-.~' . (E) will not circumvent 20 AAC 25.252 or 20 AAC 25.412. Y N GEOLOGY: ENGINEERING: UIC/Annular COMMISSION: Comments/Instructions: O Z O rtl Z -I -I- c:\msoffice\wordian\diana\checklist (rev. 11/01//00) Well History File .APPENDIX Information of detailed nature that is not particularly germane to the Well permitting Process but is part of the history file, To improve the readability of the Well History file and to simplify finding information, information, of this. ,nature is accumulated at the end of the file under APPE'.NDIXi .. No'special'effort has been made to chronologically organize this category of information, Sperry-Sun Drilling Services LIS Scan Utility SRevision: 3 $ LisLib SRevision: 4 $ Thu Dec 13 16:03:29 2001 Reel Header Service name ............. LISTPE Date ..................... 01/12/13 Origin ................... STS Reel Name ................ UNKNOWN Continuation Number ...... 01 Previous Reel Name ....... UNKNOWN Comments ................. STS LIS Writing Library. Scientific Technical Services Tape Header Service name ............. LISTPE Date ..................... 01/12/13 Origin ................... STS Tape Name ................ UNKNOWN Continuation Number ...... 01 Previous Tape Name ....... UNKNOWN Comments ................. STS LIS Writing Library. Scientific Technical Services Physical EOF Comment Record TAPE HEADER Prudhoe Bay MWD/MAD LOGS WELL NAME: API NUMBER: OPERATOR: LOGGING COMPANY: TAPE CREATION DATE: JOB DATA JOB NUMBER: LOGGING ENGINEER: OPERATOR WITNESS: MWD RUN 1 AK-MW-10156 B. JAHN SARBER/WHITL G-25A PB2 500292165271 BP Exploration (Alaska) Inc. Sperry Sun 13-DEC-01 MWD RUN 3 AK-MW-10156 B. JAHN SARBER/WHITL MWD RUN 4 AK-MW-10156 B. JAHN SARBER/WHITL JOB NUMBER: LOGGING ENGINEER: OPERATOR WITNESS: MWD RUN 5 AK-MW-10156 B. JAHN SARBER/WHITL MWD RUN 7 AK-MW-10156 B. JAHN SARBER/GOODR MWD RUN 8 AK-MW-10156 B. JAHN GOODRICH/SEV JOB NUMBER: LOGGING ENGINEER: OPERATOR WITNESS: # SURFACE LOCATION SECTION: MWD RUN 11 AK-MW-10156 B. JAHN GOODRICH/SEV 12 TOWNSHIP: RANGE: FNL: FSL: FEL: FWL: ELEVATION (FT FROM MSL 0) KELLY BUSHING: DERRICK FLOOR: GROUND LEVEL: WELL CASING RECORD 1ST STRING 2ND STRING 3RD STRING PRODUCTION STRING lin 13E 2617 1973 72.40 .00 .00 # REMARKS: OPEN HOLE CASING DRILLERS BIT SIZE (IN) SIZE (IN) DEPTH (FT) 3.750 5.500 10168.0 1. ALL DEPTHS ARE MEASURED DEPTHS (MD) UNLESS OTHERWISE NOTED. 2. ALL TRUE VERTICAL DEPTHS ARE SUBSEA TRUE VERTICAL DEPTHS (TVDSS). 3. G-25A PB1 WAS AN INADVERTENT OPENHOLE SIDETRACK DURING RUN 6. G-25A PB2 WAS PLUGGED AND ABANDONED AFTER ENCOUNTERING POOR GEOLOGY AND LEAVING A FISH IN THE HOLE ON RUN 11. G-25A WAS COMPLETED ON RUN 16. 4. MWD RUNS 1, 4, 5, 7, AND 8 ARE DIRECTIONAL WITH NATURAL GAMMA PROBE (NGP) UTILIZING SCINTILLATION DETECTORS. 5. MWD RUNS 3 AND 11 ARE DIRECTIONAL WITH DUAL GAMMA RAY (DGR) UTILIZING GEIGER-MULLER DETECTORS. 6. DIGITAL DATA SHIFTED TO THE G-25A SCHLUMBERGER MCNL/GR OF 5/27/2001 PER THE E-MAIL OF 8/27/2001 FROM D. SCHNOOR OF BP EXPLORATION (ALASKA) INC. 7. MWD RUNS 1, 3, 4, 5, 7, 8, AND 11 REPRESENT THE MWD DATA FOR WELL G-25A PB2 WITH API% 50-029-21652-71. THIS WELL REACHED A TOTAL DEPTH (TD) OF 12430' MD, 8891.2' TVD. SROP = SMOOTHED RATE OF PENETRATION SGRD = SMOOTHED GAMMA RAY - SCINTILLATION DETECTORS SGRC = SMOOTHED GAMMA RAY - GEIGER-MULLER DETECTORS $ File Header Service name ............. STSLIB.001 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/13 Maximum Physical Record..65535 File Type ................ LO Previous File Name ....... STSLIB.000 Comment Record FILE HEADER FILE NUMBER: 1 EDITED MERGED MWD Depth shifted and clipped curves; all bit runs merged. DEPTH INCREMENT: .5000 # FILE SUMMARY PBU TOOL CODE START DEPTH STOP DEPTH GR 10151.0 12400.5 ROP 10178.0 12430.5 $ BASELINE CURVE FOR SHIFTS: CURVE SHIFT DATA (MEASURED DEPTH) BASELINE DEPTH 10173 0 10176 5 10179 0 10244 0 10264 5 10297 5 10327 5 10340 0 10346 0 12430 5 $ MERGED DATA SOURCE PBU TOOL CODE MWD MWD MWD MWD MWD MWD MWD $ REMARKS: GR 10177.0 10180 5 10183 0 10247 5 10269 0 10302 5 10332 0 10344 0 10350 0 12434 5 BIT RUN NO MERGE TOP 1 3 4 5 7 8 11 MERGED MAIN PASS. $ EQUIVALENT UNSHIFTED DEPTH Data Format Specification Record 10149 5 10244 0 10268 0 10381 0 10628 5 10850 0 11710 5 Data Record Type .................. 0 Data Specification Block Type ..... 0 Logging Direction ................. Down Optical log depth units ........... Feet Data Reference Point .............. Undefined Frame Spacing ..................... 60 .lin Max frames per record ............. Undefined Absent value ...................... -999 Depth Units ....................... Datum Specification Block sub-type...0 MERGE BASE 10243 5 10267 5 10380 5 10628 0 10849 5 11710 0 12434 5 Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 1 68 0 1 ROP MWD FPH 4 1 68 4 2 GR MWD API 4 1 68 8 3 Name Service Unit Min Max Mean Nsam DEPT FT 10151 12430.5 11290.8 4560 ROP MWD FPH 0.26 530.17 71.9405 4506 GR MWD API 13.76 597.59 63.4512 4500 First Reading 10151 10178 10151 Last Reading 12430.5 12430.5 12400.5 First Reading For Entire File .......... 10151 Last Reading For Entire File ........... 12430.5 File Trailer Service name ............. STSLIB.001 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/13 Maximum Physical Record..65535 File Type ................ LO Next File Name ........... STSLIB.002 Physical EOF File Header Service name ............. STSLIB.002 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/13 Maximum Physical Record..65535 File Type ................ LO Previous File Name ....... STSLIB.001 Comment Record FILE HEADER FILE NUMBER: 2 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 1 DEPTH INCREMENT: .5000 FILE SUMMARY VENDOR TOOL CODE START DEPTH STOP DEPTH GR 10149.5 10212.5 ROP 10182.0 10243.5 $ LOG HEADER DATA DATE LOGGED: il-MAY-01 SOFTWARE SURFACE SOFTWARE VERSION: Insite DOWNHOLE SOFTWARE VERSION: 66.16 DATA TYPE (MEMORY OR REAL-TIME): Memory TD DRILLER (FT): TOP LOG INTERVAL (FT): BOTTOM LOG INTERVAL (FT): BIT ROTATING SPEED (RPM): HOLE INCLINATION (DEG MINIMUM ANGLE: MAXIMUM ANGLE: TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE NGP NATURAL GAMMA PROBE $ BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLER'S CASING DEPTH (FT): BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY S): MUD PH: MUD CHLORIDES PPM): FLUID LOSS (C3 : RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): MUD AT MAX CIRCULATING TERMPERATURE: MUD FILTRATE AT MT: MUD CAKE AT MT: NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): TOOL STANDOFF (IN): EWR FREQUENCY (HZ) : REMARKS: $ # Data Format Specification Record Data Record Type .................. 0 Data Specification Block Type .... .0 Logging Direction ................. Down Optical log depth units ........... Feet Data Reference Point .............. Undefined Frame Spacing ..................... 60 .lin Max frames per record ............. Undefined Absent value ...................... -999 Depth Units ....................... Datum Specification Block sub-type...0 10244.0 35.4 35.4 TOOL NUMBER PB02100HWRG6 3.750 Flo-Pro 8.70 49.0 9.0 44000 7.0 .000 .000 ,000 .000 Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 1 68 0 1 ROP MWD010 FPH 4 1 68 4 2 GR MWD010 API 4 1 68 8 3 .0 141.7 .0 .0 First Last Name Service Unit Min Max DEPT FT 10149.5 10243.5 ROP MWD010 FPH 4.24 137.47 GR MWD010 API 15.65 597.59 Mean Nsam Reading Reading 10196.5 189 10149.5 10243.5 82.1808 124 10182 10243.5 30.5748 127 10149.5 10212.5 First Reading For Entire File .......... 10149.5 Last Reading For Entire File ........... 10243.5 File Trailer Service name ............. STSLIB.002 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/13 Maximum Physical Record..65535 File Type ................ LO Next File Name ........... STSLIB.003 Physical EOF File Header Service name ............. STSLIB.003 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/13 Maximum Physical Record..65535 File Type ................ LO Previous File Name ....... STSLIB.002 Comment Record FILE HEADER FILE NUMBER: 3 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 3 DEPTH INCREMENT: .5000 # FILE SUMMARY VENDOR TOOL CODE START DEPTH STOP DEPTH GR 10215.5 10237.5 ROP 10244.0 10267.5 $ LOG HEADER DATA DATE LOGGED: 12-MAY-01 SOFTWARE SURFACE SOFTWARE VERSION: Insite DOWNHOLE SOFTWARE VERSION: 66.16 DATA TYPE (MEMORY OR REAL-TIME): Memory TD DRILLER (FT): 10268.0 TOP LOG INTERVAL (FT): BOTTOM LOG INTERVAL (FT): BIT ROTATING SPEED (RPM): HOLE INCLINATION (DEG MINIMUM ANGLE: 35.0 MAXIMUM ANGLE: 44.2 TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE DGR DUAL GAMMA RAY $ BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLER'S CASING DEPTH (FT): BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S) : MUD PH: MUD CHLORIDES (PPM) : FLUID LOSS (C3): RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): MUD AT MAX CIRCULATING TERMPERATURE: MUD FILTRATE AT MT: MUD CAKE AT MT: NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): TOOL STANDOFF (IN): EWR FREQUENCY (HZ): REMARKS: $ Data Format Specification Record Data Record Type .................. 0 Data Specification Block Type ..... 0 Logging Direction ................. Down Optical log depth units ........... Feet Data Reference Point .............. Undefined Frame Spacing ..................... 60 .lin Max frames per record ............. Undefined Absent value ...................... -999 Depth Units ....................... Datum Specification Block sub-type...0 TOOL NUMBER PB02100HWRG6 3.750 Flo Pro 8.70 49.0 9.0 44000 7.0 .000 .000 .000 .000 Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 1 68 0 1 ROP MWD030 FPH 4 1 68 4 2 GR MWD030 API 4 1 68 8 3 .0 141.4 .0 .0 Name Service Unit Min Max Mean Nsam DEPT FT 10215.5 10267.5 10241.5 105 ROP MWD030 FPH 0.26 93.98 36.2206 48 GR MWD030 API 18.75 29.78 23.7393 45 First Reading 10215.5 10244 10215.5 Last Reading 10267.5 10267.5 10237.5 First Reading For Entire File .......... 10215.5 Last Reading For Entire File ........... 10267.5 File Trailer Service name ............. STSLIB.003 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/13 Maximum Physical Record..65535 File Type ................ LO Next File Name ........... STSLIB.004 Physical EOF File Header Service name ............. STSLIB.004 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/13 Maximum Physical Record..65535 File Type ................ LO Previous File Name ....... STSLIB.003 Comment Record FILE HEADER FILE NUMBER: 4 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 4 DEPTH INCREMENT: .5000 # FILE SUMMARY VENDOR TOOL CODE START DEPTH STOP DEPTH GR 10232.0 10344.5 ROP 10268.0 10380.5 $ LOG HEADER DATA DATE LOGGED: 12-MAY-01 SOFTWARE SURFACE SOFTWARE VERSION: Insite DOWNHOLE SOFTWARE VERSION: 66.16 DATA TYPE (MEMORY OR REAL-TIME): Memory TD DRILLER (FT): 10381.0 TOP LOG INTERVAL (FT) : BOTTOM LOG INTERVAL {FT) : BIT ROTATING SPEED (RPM) : HOLE INCLINATION (DEG MINIMUM ANGLE: 48.4 MAXIMUM ANGLE: 54.4 TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE NGP NATURAL GAMMA PROBE $ BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLER'S CASING DEPTH (FT) : BOREHOLE CONDITIONS TOOL NUMBER PB02100HWRG6 3.750 MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S): MUD PH: MUD CHLORIDES (PPM): FLUID LOSS (C3): RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): MUD AT MAX CIRCULATING TERMPERATURE: MUD FILTRATE AT MT: MUD CAKE AT MT: NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): TOOL STANDOFF (IN): EWR FREQUENCY (HZ): REMARKS: $ Data Format Specification Record Data Record Type .................. 0 Data Specification Block Type ..... 0 Logging Direction ................. Down Optical log depth units ........... Feet Data Reference Point .............. Undefined Frame Spacing ..................... 60 .lin Max frames per record ............. Undefined Absent value ...................... -999 Depth Units ....................... Datum Specification Block sub-type...0 Flo-Pro 8.70 54.0 8.8 38000 7.0 .000 .000 .000 .000 Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 1 68 0 1 ROP MWD040 FPH 4 1 68 4 2 GR MWD040 API 4 1 68 8 3 .0 141.7 .0 .0 Name Service Unit Min Max Mean Nsam DEPT FT 10232 10380.5 10306.3 298 ROP MWD040 FPH 0.46 76.23 38.7247 226 GR MWD040 API 14.03 60.07 22.4867 226 First Reading 10232 10268 10232 Last Reading 10380.5 10380.5 10344.5 First Reading For Entire File .......... 10232 Last Reading For Entire File ........... 10380.5 File Trailer Service name ............. STSLIB.004 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/13 Maximum Physical Record..65535 File Type ................ LO Next File Name ........... STSLIB.005 Physical EOF File Header Service name ............. STSLIB.005 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/13 Maximum Physical Record..65535 File Type ................ LO Previous File Name ....... STSLIB.004 Comment Record FILE HEADER FILE NUMBER: 5 RAW MWD 'Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 5 DEPTH INCREMENT: .5000 # FILE SUMMARY VENDOR TOOL CODE START DEPTH GR 10345.0 ROP 10381.0 $ LOG HEADER DATA DATE LOGGED: SOFTWARE SURFACE SOFTWARE VERSION: DOWNHOLE SOFTWARE VERSION: DATA TYPE (MEMORY OR REAL-TIME): TD DRILLER (FT): TOP LOG INTERVAL (FT): BOTTOM LOG INTERVAL (FT): BIT ROTATING SPEED (RPM): HOLE INCLINATION (DEG MINIMUM ANGLE: MAXIMUM ANGLE: STOP DEPTH 10603.0 10628.0 TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE NGP NATURAL GAMMA PROBE $ BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLER'S CASING DEPTH (FT): BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S): MUD PH: MUD CHLORIDES (PPM): FLUID LOSS (C3}: RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): MUD AT MAX CIRCULATING TERMPERATURE: 13-MAY-01 Insite 66.16 Memory 10789.0 62.7 88.4 TOOL NUMBER PB02100HWRG6 3.750 Flo-Pro 8.70 54.0 8.8 38000 7.0 .000 .000 .0 145.9 MUD FILTRATE AT MT: MUD CAKE AT MT: NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): TOOL STANDOFF (IN): EWR FREQUENCY (HZ): REMARKS: $ Data Format Specification Record Data Record Type .................. 0 Data Specification Block Type ..... 0 Logging Direction ................. Down Optical log depth units ........... Feet Data Reference Point .............. Undefined Frame Spacing ..................... 60 .lin Max frames per record ............. Undefined Absent value ...................... -999 Depth Units ....................... Datum Specification Block sub-type...0 .000 .000 Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 1 68 0 1 ROP MWD050 FPH 4 1 68 4 2 GR MWD050 API 4 1 68 8 3 .0 .0 Name Service Unit Min Max Mean Nsam DEPT FT 10345 10628 10486.5 567 ROP MWD050 FPH 2.21 183.49 90.0721 495 GR MWD050 API 13.76 221.64 53.9654 517 First Reading 10345 10381 10345 Last Reading 10628 10628 10603 First Reading For Entire File .......... 10345 Last Reading For Entire File ........... 10628 File Trailer Service name ............. STSLIB.005 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/13 Maximum Physical Record..65535 File Type ................ LO Next File Name ........... STSLIB.006 Physical EOF File Header Service name ............. STSLIB.006 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/13 Maximum Physical Record..65535 File Type ................ LO Previous File Name ....... STSLIB.005 Comment Record FILE HEADER FILE NUMBER: 6 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 7 DEPTH INCREMENT: .5000 FILE SUMMARY VENDOR TOOL CODE START DEPTH GR 10603.5 ROP 10628.5 $ LOG HEADER DATA DATE LOGGED: SOFTWARE SURFACE SOFTWARE VERSION: DOWNHOLE SOFTWARE VERSION: DATA TYPE (MEMORY OR REAL-TIME): TD DRILLER (FT): TOP LOG INTERVAL (FT): BOTTOM LOG INTERVAL (FT): BIT ROTATING SPEED (RPM): HOLE INCLINATION (DEG MINIMUM ANGLE: MAXIMUM ANGLE: STOP DEPTH 10818.5 10849.5 TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE NGP NATURAL GAMMA PROBE $ BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE {IN): DRILLER'S CASING DEPTH (FT): BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S): MUD PH: MUD CHLORIDES (PPM): FLUID LOSS (C3): RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): MUD AT MAX CIRCULATING TERMPERATURE: MUD FILTRATE AT MT: MUD CAKE AT MT: NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): TOOL STANDOFF (IN): 16-MAY-01 Insite 66.16 Memory 10850.0 70.4 85.6 TOOL NUMBER PB02100HWRG6 3.750 Flo-Pro 8.75 57.0 8.9 33000 5.8 .000 .000 .000 .000 .0 145.9 .0 .0 EWR FREQUENCY (HZ) : # REMARKS: $ # Data Format Specification Record Data Record Type .................. 0 Data Specification Block Type ..... 0 Logging Direction ................. Down Optical log depth units ........... Feet Data Reference Point .............. Undefined Frame Spacing ..................... 60 .lin Max frames per record ............. Undefined Absent value ...................... -999 Depth Units ....................... Datum Specification Block sub-type...0 Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 1 68 0 1 ROP MWD070 FPH 4 1 68 4 2 GR MWD070 API 4 1 68 8 3 Name Service Unit Min Max Mean Nsam DEPT FT 10603.5 10849.5 10726.5 493 ROP MWD070 FPH 1.94 118.06 59.6064 443 GR MWD070 API 28.83 194.77 80.7494 431 First Reading 10603.5 10628.5 10603.5 Last Reading 10849.5 10849.5 10818.5 First Reading For Entire File .......... 10603.5 Last Reading For Entire File ........... 10849.5 File Trailer Service name ............. STSLIB.006 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/13 Maximum Physical Record..65535 File Type ................ LO Next File Name ........... STSLIB.007 Physical EOF File Header Service name ............. STSLIB.007 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/13 Maximum Physical Record..65535 File Type ................ LO Previous File Name ....... STSLIB.006 Comment Record FILE HEADER FILE NUMBER: RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 8 DEPTH INCREMENT: .5000 FILE SUMMARY VENDOR TOOL CODE START DEPTH GR 10819.0 ROP 10850.0 $ # LOG HEADER DATA DATE LOGGED: SOFTWARE SURFACE SOFTWARE VERSION: DOWNHOLE SOFTWARE VERSION: DATA TYPE (MEMORY OR REAL-TIME): TD DRILLER (FT): TOP LOG INTERVAL (FT): BOTTOM LOG INTERVAL (FT): BIT ROTATING SPEED (RPM): HOLE INCLINATION (DEG MINIMUM ANGLE: MAXIMUM ANGLE: STOP DEPTH 11680.0 11710.0 TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE NGP NATURAL GAMMA PROBE $ BOREHOLE AND CASING DATA OPEN HOLE BlT SIZE (IN): DRILLER'S CASING DEPTH (FT): BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S): MUD PH: MUD CHLORIDES (PPM): FLUID LOSS (C3): RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): MUD AT MAX CIRCULATING TERMPERATURE: MUD FILTRATE AT MT: MUD CAKE AT MT: NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): TOOL STANDOFF (IN): EWR FREQUENCY (HZ): REMARKS: $ Data Format Specification Record Data Record Type .................. 0 Data Specification Block Type ..... 0 Logging Direction ................. Down 17-MAY-01 Insite 66.16 Memory 11700.0 85.6 94.9 TOOL NUMBER PB02100HWRG6 3.750 FLOPRO 8.65 .0 8.5 18O00 6.4 .000 .000 .000 .000 .0 150.1 .0 .0 Optical log depth units ........... Feet Data Reference Point .............. Undefined Frame Spacing ..................... 60 .lin Max frames per record ............. Undefined Absent value ...................... -999 Depth Units ....................... Datum Specification Block sub-type...0 Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 1 68 0 1 ROP MWD080 FPH 4 1 68 4 2 GR MWD080 API 4 1 68 8 3 Name Service Unit Min Max Mean Nsam DEPT FT 10819 11710 11264.5 1783 ROP MWD080 FPH 0.55 402.14 65.9276 1721 GR MWD080 API 33.71 225.64 69.3836 1723 First Reading 10819 10850 10819 Last Reading 11710 11710 11680 First Reading For Entire File .......... 10819 Last Reading For Entire File ........... 11710 File Trailer Service name ............. STSLIB.007 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/13 Maximum Physical Record..65535 File Type ................ LO Next File Name ........... STSLIB.008 Physical EOF File Header Service name ............. STSLIB.008 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/13 Maximum Physical Record..65535 File Type ................ LO Previous File Name ....... STSLIB.007 Comment Record FILE HEADER FILE NUMBER: 8 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 11 DEPTH INCREMENT: .5000 FILE SUMMARY VENDOR TOOL CODE START DEPTH STOP DEPTH GR 11680.5 12404.5 ROP 11710.5 12434.5 $ LOG HEADER DATA DATE LOGGED: SOFTWARE SURFACE SOFTWARE VERSION: DOWNHOLE SOFTWARE VERSION: DATA TYPE (MEMORY OR REAL-TIME): TD DRILLER (FT): TOP LOG INTERVAL (FT): BOTTOM LOG INTERVAL (FT): BIT ROTATING SPEED (RPM): HOLE INCLINATION (DEG MINIMUM ANGLE: MAXIMUM ANGLE: TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE DGR DUAL GAMMA RAY $ BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLER'S CASING DEPTH (FT): BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (SI: MUD PH: MUD CHLORIDES (PPM): FLUID LOSS (C3): RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): MUD AT MAX CIRCULATING TERMPERATURE: MUD FILTRATE AT MT: MUD CAKE AT MT: NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): TOOL STANDOFF (IN): EWR FREQUENCY (HZ): REMARKS: $ # Data Format Specification Record Data Record Type .................. 0 Data Specification Block Type ..... 0 Logging Direction ................. Down Optical log depth units ........... Feet Data Reference Point .............. Undefined Frame Spacing ..................... 60 .lin Max frames per record ............. Undefined Absent value ...................... -999 Depth Units ....................... Datum Specification Block sub-type...0 21-MAY-01 Insite 66.16 Memory 12434.0 89.1 96.7 TOOL NUMBER PB02100HWRG6 3.750 Flo-Pro 8.70 .0 8.5 30000 5.8 .000 .000 .000 .000 Name Service Order Units Size Nsam Rep Code Offset Channel .0 155.9 .0 .0 DEPT FT 4 1 68 ROP MWDll0 FPH 4 1 68 GR MWDll0 API 4 1 68 Name Service Unit Min Max DEPT FT 11680.5 12434.5 ROP MWDll0 FPH 1.26 530.17 GR MWDll0 API 25.01 143.13 Mean 12057.5 82.12 64. 6319 First Last Nsam Reading Reading 1509 11680.5 12434.5 1449 11710.5 12434.5 1449 11680.5 12404.5 First Reading For Entire File .......... 11680.5 Last Reading For Entire File ........... 12434.5 File Trailer Service name ............. STSLIB.008 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/13 Maximum Physical Record..65535 File Type ................ LO Next File Name ........... STSLIB.009 Physical EOF Tape Trailer Service name ............. LISTPE Date ..................... 01/12/13 Origin ................... STS Tape Name ................ UNKNOWN Continuation Number ...... 01 Next Tape Name ........... UNKNOWN Comments ................. STS LIS Writing Library. Reel Trailer Service name ............. LISTPE Date ..................... 01/12/13 Origin ................... STS Reel Name ................ UNKNOWN Continuation Number ...... 01 Next Reel Name ........... UNKNOWN Comments ................. STS LIS Writing Library. Scientific Technical Services Scientific Technical Services Physical EOF Physical EOF End Of LIS File Sperry-Sun Drilling Services LIS Scan Utility SRevision: 3 $ LisLib SRevision: 4 $ Wed Dec 12 09:58:15 2001 Reel Header Service name ............. LISTPE Date ..................... 01/12/12 Origin ................... STS Reel Name ................ UNKNOWN Continuation Number ...... 01 Previous Reel Name ....... UNKNOWN Comments ................. STS LIS Writing Library. Scientific Technical Services Tape Header Service name ............. LISTPE Date ..................... 01/12/12 Origin ................... STS Tape Name ................ UNKNOWN Continuation Number ...... 01 Previous Tape Name ....... UNKNOWN Comments ................. STS LIS Writing Library. Scientific Technical Services Physical EOF Comment Record TAPE HEADER Prudhoe Bay MWD/MAD LOGS WELL NAME: API NUMBER: OPERATOR: LOGGING COMPANY: TAPE CREATION DATE: JOB DATA JOB NUMBER: LOGGING ENGINEER: OPERATOR WITNESS: MWD RUN 1 AK-MW-10156 B. JAHN SARBER/WHITL G-25A 500292165201 BP Exploration (Alaska) Inc. Sperry Sun il-DEC-01 MWD RUN 3 AK-MW-10156 B. JAHN SARBER/WHITL MWD RUN 4 AK-MW-10156 B. JAHN SARBER/WHITL JOB NUMBER: LOGGING ENGINEER: OPERATOR WITNESS: MWD RUN 13 AK-MW-10156 S. LATZ SEVCIK/FEKET MWD RUN 14 AK-MW-10156 S. LATZ SEVCIK/FEKET MWD RUN 15 AK-MW-10156 S. LATZ SEVCIK/FEKET JOB NUMBER: LOGGING ENGINEER: OPERATOR WITNESS: SURFACE LOCATION SECTION: MWD RUN 16 AK-MW-10156 S. LATZ SEVCIK/FEKET 12 TOWNSHIP: RANGE: FNL: FSL: FEL: FWL: ELEVATION (FT FROM MSL 0) KELLY BUSHING: DERRICK FLOOR: GROUND LEVEL: WELL CASING RECORD 1ST STRING 2ND STRING 3RD STRING PRODUCTION STRING lin 13E 2617 1973 72.40 .00 .00 # REMARKS: OPEN HOLE CASING DRILLERS BIT SIZE (IN) SIZE (IN) DEPTH (FT) 3.750 5.500 10168.0 1. ALL DEPTHS ARE MEASURED DEPTHS (MD) UNLESS OTHERWISE NOTED. 2. ALL TRUE VERTICAL DEPTHS ARE SUBSEA TRUE VERTICAL DEPTHS (TVDSS). 3. G-25A PB1 WAS AN INADVERTENT OPENHOLE SIDETRACK DURING RUN 6. G-25A PB2 WAS PLUGGED AND ABANDONED AFTER ENCOUNTERING POOR GEOLOGY AND LEAVING A FISH IN THE HOLE ON RUN 11. 4. G-25A KICKS OFF FROM G-25 PB1 AT CEMENT PLUG SET AT 10350' MD, 8775' TVD. 5. MWD RUNS 1, 4, 13, 14, 15, 16 ARE DIRECTIONAL WITH NATURAL GAMMA PROBE (NGP) UTILIZING SCINTILLATION DETECTORS. 6. MWD RUN 3 IS DIRECTIONAL WITH DUAL GAMMA RAY (DGR) UTILIZING GEIGER-MULLER DETECTORS. 7. DIGITAL DATA SHIFTED TO THE SCHLUMBERGER MCNL/GR OF 5/27/2001 PER THE E-MAIL OF 8/27/2001 FROM D. SCHNOOR OF BP EXPLORATION (ALASKA) INC. 8. MWD RUNS 1, 3, 4, 13, 14, 15, 16 REPRESENT THE MWD DATA FOR WELL G-25A WITH API# 50-029-21652-01. THIS WELL REACHED A TOTAL DEPTH (TD) OF 12380' MD, 8877' TVD. File Header SROP = SMOOTHED RATE OF PENETRATION SGRD = SMOOTHED GAMMA RAY - SCINTILLATION DETECTORS SGRC = SMOOTHED GAMMA RAY - GEIGER-MULLER DETECTORS $ Service name ............. STSLIB.001 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/12 Maximum Physical Record..65535 File Type ................ LO Previous File Name ....... STSLIB.000 Comment Record FILE HEADER FILE NUMBER: 1 EDITED MERGED MWD Depth shifted and clipped curves; DEPTH INCREMENT: .5000 # FILE SUMMARY PBU TOOL CODE START DEPTH GR 10145.5 ROP 10178.0 $ # BASELINE CURVE FOR SHIFTS: CURVE SHIFT DATA (MEASURED DEPTH) BASELI 10173. 10176 10179 10244 10264 10297 10327 10340 10417 10462 10494 10503 10537 10542 10545 10570 10583 10603 10619 10659 10750 10803 10824 10833 10845 10866 10895 10954 10963 10974 11003 11062 11078 11123 11202 11285 NE DEPTH GR 0 10177 5 10180 0 10183 0 10247 5 10269 5 10302 5 10332 0 10344 0 10421 5 10467 5 10499 0 10506 5 10543 0 10547 5 10551 0 10576 0 10589 5 10609 0 10624 0 10664 0 10757 0 10810 5 10831 5 10839 5 10852 0 10872 5 10902 5 10961 0 10970 5 10981 5 11009 5 11068 0 11084 0 11130 5 11209 0 11292 all EQUIVALENT bit runs merged. STOP DEPTH 12349.5 12380.5 UNSHIFTED DEPTH 11299.5 11384.5 11408 5 11457 5 11529 0 11543 0 11566 0 11572 5 11581 0 11586 0 11637 0 11671 0 11687 0 11707 0 11772 0 11781 5 11823 0 11833 5 11846 5 11852 0 11871 5 11893 0 11902 0 11962 5 11972 0 11987 5 12007 5 12013 5 12029 5 12034 5 12066 5 12169 5 12176 5 12239 0 12277 5 $ MERGED DATA SOURCE PBU TOOL CODE MWD MWD MWD MWD MWD MWD MWD $ # REMARKS: 11306.5 11392 5 11416 5 11464 0 11535 0 11549 0 11574 0 11583 0 11589 5 11595 0 11646 0 11689 5 11701 0 11717 0 11778 5 11788 5 11829 0 11839 0 11852 5 11860 5 11879 5 11900 5 11910 0 11969 5 11977 0 11993 0 12013 0 12018 0 12032 0 12038 5 12070 0 12177 0 12185 0 12248 5 12288 0 BIT RUN NO MERGE TOP 10182 0 10244 0 10268 0 10350 5 10657 0 11416 5 11978 5 1 3 4 13 14 15 16 MERGED MAIN PASS. $ # Data Format Specification Record Data Record Type .................. 0 Data Specification Block Type ..... 0 Logging Direction ................. Down Optical log depth units ........... Feet Data Reference Point .............. Undefined Frame Spacing ..................... 60 .lin Max frames per record ............. Undefined Absent value ...................... -999 Depth Units ....................... MERGE BASE 10243 5 10267 5 10350 0 10656 5 11416 0 11978 0 12391 0 Datum Specification Block sub-type...0 Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 1 68 0 1 ROP MWD FT/H 4 1 68 4 2 GR MWD API 4 1 68 8 3 Name Service Unit Min Max Mean Nsam DEPT FT 10145.5 12380.5 11263 4471 ROP MWD FT/H 0.3 1118.05 100.599 4406 GR MWD API 14.03 597.59 53.8106 4409 First Reading 10145.5 10178 10145.5 Last Reading 12380.5 12380.5 12349.5 First Reading For Entire File .......... 10145.5 Last Reading For Entire File ........... 12380.5 File Trailer Service name ............. STSLIB.001 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/12 Maximum Physical Record..65535 File Type ................ LO Next File Name ........... STSLIB.002 Physical EOF File Header Service name ............. STSLIB.002 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/12 Maximum Physical Record..65535 File Type ................ LO Previous File Name ....... STSLIB.001 Comment Record FILE HEADER FILE NUMBER: 2 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 1 DEPTH INCREMENT: .5000 FILE SUMMARY VENDOR TOOL CODE START DEPTH STOP DEPTH GR 10149.5 10212.5 ROP 10182.0 10243.5 $ # LOG HEADER DATA DATE LOGGED: il-MAY-01 SOFTWARE SURFACE SOFTWARE VERSION: Insite DOWNHOLE SOFTWARE VERSION: 66.16 DATA TYPE (MEMORY OR REAL-TIME): TD DRILLER (FT) : TOP LOG INTERVAL (FT): BOTTOM LOG INTERVAL (FT) : BIT ROTATING SPEED (RPM): HOLE INCLINATION (DEG MINIMUM ANGLE: MAXIMUM ANGLE: TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE NGP NATURAL GAMMA PROBE $ BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLER'S CASING DEPTH (FT): BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S): MUD PH: MUD CHLORIDES (PPM): FLUID LOSS (C3): RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): MUD AT MAX CIRCULATING TERMPERATURE: MUD FILTRATE AT MT: MUD CAKE AT MT: NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): TOOL STANDOFF (IN): EWR FREQUENCY (HZ): REMARKS: $ # Data Format Specification Record Data Record Type .................. 0 Data Specification Block Type ..... 0 Logging Direction ................. Down Optical log depth units ........... Feet Data Reference Point .............. Undefined Frame Spacing ..................... 60 .lin Max frames per record ............. Undefined Absent value ...................... -999 Depth Units ....................... Datum Specification Block sub-type...0 Memory 10244.0 35.4 35.4 TOOL NUMBER PB02100HWRG6 3.750 Flo-Pro 8.70 49.0 9.0 44000 7.0 .000 .000 .000 .000 .0 141.7 .0 .0 Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 1 68 0 1 ROP MWD010 FT/H 4 1 68 4 2 GR MWD010 API 4 1 68 8 3 Name Service Unit Min Max DEPT FT 10149.5 10243.5 ROP MWD010 FT/H 4.24 137.47 GR MWD010 API 15.65 597.59 Mean Nsam 10196.5 189 82.2184 124 30.5748 127 First Reading 10149.5 10182 10149.5 Last Reading 10243.5 10243.5 10212.5 First Reading For Entire File .......... 10149.5 Last Reading For Entire File ........... 10243.5 File Trailer Service name ............. STSLIB.002 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/12 Maximum Physical Record..65535 File Type ................ LO Next File Name ........... STSLIB.003 Physical EOF File Header Service name ............. STSLIB.003 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/12 Maximum Physical Record..65535 File Type ................ LO Previous File Name ....... STSLIB.002 Comment Record FILE HEADER FILE NUMBER: 3 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 3 DEPTH INCREMENT: .5000 # FILE SUMMARY VENDOR TOOL CODE START DEPTH STOP DEPTH GR 10213.0 10237.5 ROP 10244.0 10267.5 $ LOG HEADER DATA DATE LOGGED: 12-MAY-01 SOFTWARE SURFACE SOFTWARE VERSION: Insite DOWNHOLE SOFTWARE VERSION: 66.16 DATA TYPE (MEMORY OR REAL-TIME): Memory TD DRILLER (FT) : 10268.0 TOP LOG INTERVAL (FT): BOTTOM LOG INTERVAL (FT): BIT ROTATING SPEED (RPM): HOLE INCLINATION (DEG MINIMUM ANGLE: 35.0 MAXIMUM ANGLE: 44.2 TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE DGR DUAL GAMMA RAY $ BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLER'S CASING DEPTH (FT): BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G/: MUD VISCOSITY (SI: MUD PH: MUD CHLORIDES (PPM): FLUID LOSS (C3): RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): MUD AT MAX CIRCULATING TERMPERATURE: MUD FILTRATE AT MT: MUD CAKE AT MT: NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): TOOL STANDOFF (IN): EWR FREQUENCY (HZ): REMARKS: $ Data Format Specification Record Data Record Type .................. 0 Data Specification Block Type ..... 0 Logging Direction ................. Down Optical log depth units ........... Feet Data Reference Point .............. Undefined Frame Spacing ..................... 60 .lin Max frames per record ............. Undefined Absent value ...................... -999 Depth Units ....................... Datum Specification Block sub-type...0 TOOL NUMBER PB02100HWRG6 3.750 Flo Pro 8.70 49.0 9.0 44000 7.0 .000 .000 .000 .000 .0 141.4 .0 .0 Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 1 68 0 1 ROP MWD030 FT/H 4 1 68 4 2 GR MWD030 API 4 1 68 8 3 Name Service Unit Min Max Mean Nsam DEPT FT 10213 10267.5 10240.3 110 ROP MWD030 FT/H 0.3 93.98 37.1329 48 GR MWD030 API 15.53 29.78 23.2802 50 First Reading 10213 10244 10213 Last Reading 10267.5 10267.5 10237.5 First Reading For Entire File .......... 10213 Last Reading For Entire File ........... 10267.5 File Trailer Service name ............. STSLIB.003 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/12 Maximum Physical Record..65535 File Type ................ LO Next File Name ........... STSLIB.004 Physical EOF File Header Service name ............. STSLIB.004 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/12 Maximum Physical Record..65535 File Type ................ LO Previous File Name ....... STSLIB.003 Comment Record FILE HEADER FILE NUMBER: 4 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 4 DEPTH INCREMENT: .5000 # FILE SUMMARY VENDOR TOOL CODE START DEPTH STOP DEPTH GR 10238.0 10344.5 ROP 10268.0 10350.0 $ # LOG HEADER DATA DATE LOGGED: 12-MAY-01 SOFTWARE SURFACE SOFTWARE VERSION: Insite DOWNHOLE SOFTWARE VERSION: 66.16 DATA TYPE (MEMORY OR REAL-TIME): Memory TD DRILLER (FT): 10350.0 TOP LOG INTERVAL (FT) : BOTTOM LOG INTERVAL (FT): BIT ROTATING SPEED (RPM): HOLE INCLINATION (DEG MINIMUM ANGLE: 48.4 MAXIMUM ANGLE: 54.4 TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE NGP NATURAL GAMMA PROBE $ BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLER'S CASING DEPTH (FT): TOOL NUMBER PB02100HWRG6 3.750 BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S): MUD PH: MUD CHLORIDES (PPM): FLUID LOSS (C3): RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): MUD AT MAX CIRCULATING TERMPERATURE: MUD FILTRATE AT MT: MUD CAKE AT MT: NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): TOOL STANDOFF (IN): EWR FREQUENCY (HZ): REMARKS: $ Data Format Specification Record Data Record Type .................. 0 Data Specification Block Type ..... 0 Logging Direction ................. Down Optical log depth units ........... Feet Data Reference Point .............. Undefined Frame Spacing ..................... 60 .lin Max frames per record ............. Undefined Absent value ...................... -999 Depth Units ....................... Datum Specification Block sub-type...0 Flo-Pro 8.70 54.0 8.8 38000 7.0 .000 .000 .000 .000 Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 1 68 0 1 ROP MWD040 FT/H 4 1 68 4 2 GR MWD040 API 4 1 68 8 3 .0 141.7 .0 .0 Name Service Unit Min Max Mean Nsam DEPT FT 10238 10350 10294 225 ROP MWD040 FT/H 0.46 76.23 33.3158 165 GR MWD040 API 14.03 60.07 22.6349 214 First Reading 10238 10268 10238 Last Reading 10350 10350 10344.5 First Reading For Entire File .......... 10238 Last Reading For Entire File ........... 10350 File Trailer Service name ............. STSLIB.004 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/12 Maximum Physical Record..65535 File Type ................ LO Next File Name ........... STSLIB.005 Physical EOF File Header Service name ............. STSLIB.005 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/12 Maximum Physical Record..65535 File Type ................ LO Previous File Name ....... STSLIB.004 Comment Record FILE HEADER FILE NUMBER: 5 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 13 DEPTH INCREMENT: .5000 FILE SUMMARY VENDOR TOOL CODE START DEPTH GR 10345.0 ROP 10350.5 $ # LOG HEADER DATA DATE LOGGED: SOFTWARE SURFACE SOFTWARE VERSION: DOWNHOLE SOFTWARE VERSION: DATA TYPE (MEMORY OR REAL-TIME): TD DRILLER (FT): TOP LOG INTERVAL (FT): BOTTOM LOG INTERVAL (FT): BIT ROTATING SPEED (RPM): HOLE INCLINATION (DEG MINIMUM ANGLE: MAXIMUM ANGLE: STOP DEPTH 10626.5 10656.5 TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE NGP NATURAL GAMMA PROBE $ BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLER'S CASING DEPTH (FT) : BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY S): MUD PH: MUD CHLORIDES PPM): FLUID LOSS (C3 : RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): 23-MAY-01 Insite 66.16 Memory 10650.0 60.5 87.8 TOOL NUMBER PB02100HWRG6 3.750 Flo Pro 8.70 65.0 12.5 31000 5.8 .000 .0 MUD AT MAX CIRCULATING TERMPERATURE: MUD FILTRATE AT MT: MUD CAKE AT MT: NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): TOOL STANDOFF (IN): EWR FREQUENCY (HZ): REMARKS: $ # Data Format Specification Record Data Record Type .................. 0 Data Specification Block Type ..... 0 Logging Direction ................. Down Optical log depth units ........... Feet Data Reference Point .............. Undefined Frame Spacing ..................... 60 .lin Max frames per record ............. Undefined Absent value ...................... -999 Depth Units ....................... Datum Specification Block sub-type...0 .000 .000 .000 146.0 .0 .0 Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 1 68 0 1 ROP MWD130 FT/H 4 1 68 4 2 GR MWD130 API 4 1 68 8 3 Name Service Unit Min Max Mean Nsam DEPT FT 10345 10656.5 10500.8 624 ROP MWD130 FT/H 0.77 131.47 79.0296 613 GR MWD130 API 17.4 142.39 31.2221 564 First Reading 10345 10350.5 10345 Last Reading 10656.5 10656.5 10626.5 First Reading For Entire File .......... 10345 Last Reading For Entire File ........... 10656.5 File Trailer Service name ............. STSLIB.005 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/12 Maximum Physical Record..65535 File Type ................ LO Next File Name ........... STSLIB.006 Physical EOF File Header Service name ............. STSLIB.006 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/12 Maximum Physical Record..65535 File Type ................ LO Previous File Name ....... STSLIB.005 Comment Record FILE HEADER FILE NUMBER: 6 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 14 DEPTH INCREMENT: .5000 # FILE SUMMARY VENDOR TOOL CODE START DEPTH GR 10627.0 ROP 10657.0 $ # LOG HEADER DATA DATE LOGGED: SOFTWARE SURFACE SOFTWARE VERSION: DOWNHOLE SOFTWARE VERSION: DATA TYPE (MEMORY OR REAL-TIME): TD DRILLER (FT): TOP LOG INTERVAL (FT) : BOTTOM LOG INTERVAL (FT) : BIT ROTATING SPEED (RPM) : HOLE INCLINATION (DEG MINIMUM ANGLE: MAXIMUM ANGLE: STOP DEPTH 11385.0 11416.0 TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE NGP NATURAL GAMMA PROBE $ BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLER'S CASING DEPTH (FT): BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S): MUD PH: MUD CHLORIDES (PPM): FLUID LOSS (C3): RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): MUD AT MAX CIRCULATING TERMPERATURE: MUD FILTRATE AT MT: MUD CAKE AT MT: NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): 24-MAY-01 Insite 66.16 Memory 11416.0 73.5 93.1 TOOL NUMBER PB02100HWRG6 3.750 Flo Pro 9.00 65.0 9.0 24000 9.2 .000 .000 .000 .000 .0 154.0 .0 .0 TOOL STANDOFF (IN): EWR FREQUENCY (HZ): # REMARKS: $ # Data Format Specification Record Data Record Type .................. 0 Data Specification Block Type ..... 0 Logging Direction ................. Down Optical log depth units ........... Feet Data Reference Point .............. Undefined Frame Spacing ..................... 60 .lin Max frames per record ............. Undefined Absent value ...................... -999 Depth Units ....................... Datum Specification Block sub-type...0 Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 1 68 0 1 ROP MWD140 FT/H 4 1 68 4 2 GR MWD140 API 4 1 68 8 3 Name Service Unit Min Max Mean Nsam DEPT FT 10627 11416 11021.5 1579 ROP MWD140 FT/H 1.59 916.79 113.471 1519 GR MWD140 API 17.4 191.16 63.4433 1517 First Reading 10627 10657 10627 Last Reading 11416 11416 11385 First Reading For Entire File .......... 10627 Last Reading For Entire File ........... 11416 File Trailer Service name ............. STSLIB.006 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/12 Maximum Physical Record..65535 File Type ................ LO Next File Name ........... STSLIB.007 Physical EOF File Header Service name ............. STSLIB.007 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/12 Maximum Physical Record..65535 File Type ................ LO Previous File Name ....... STSLIB.006 Comment Record FILE HEADER FILE NUMBER: RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 15 DEPTH INCREMENT: .5000 FILE SUMMARY VENDOR TOOL CODE START DEPTH GR 11385.5 ROP 11416.5 $ LOG HEADER DATA DATE LOGGED: SOFTWARE SURFACE SOFTWARE VERSION: DOWNHOLE SOFTWARE VERSION: DATA TYPE (MEMORY OR REAL-TIME): TD DRILLER (FT): TOP LOG INTERVAL (FT): BOTTOM LOG INTERVAL (FT) : BIT ROTATING SPEED (RPM) : HOLE INCLINATION (DEG MINIMUM ANGLE: MAXIMUM ANGLE: # STOP DEPTH 11948.5 11978.0 TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE NGP NATURAL GAMMA PROBE $ BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLER'S CASING DEPTH (FT): BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S): MUD PH: MUD CHLORIDES (PPM): FLUID LOSS (C3): RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): MUD AT MAX CIRCULATING TERMPERATURE: MUD FILTRATE AT MT: MUD CAKE AT MT: NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): TOOL STANDOFF (IN): EWR FREQUENCY (HZ): REMARKS: $ Data Format Specification Record Data Record Type .................. 0 Data Specification Block Type ..... 0 25-MAY-01 Insite 66.16 Memory 11978.0 84.2 93.0 TOOL NUMBER PB02100HWRG6 3.750 Flo Pro 8.50 65.0 8.5 26000 5.8 .000 .000 .000 .000 .0 158.0 .0 .0 Logging Direction ................. Down Optical log depth units ........... Feet Data Reference Point .............. Undefined Frame Spacing ..................... 60 .lin Max frames per record ............. Undefined Absent value ...................... -999 Depth Units ....................... Datum Specification Block sub-type...0 Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 1 68 0 1 ROP MWD150 FT/H 4 1 68 4 2 GR MWD150 API 4 1 68 8 3 Name Service Unit Min Max Mean Nsam DEPT FT 11385.5 11978 11681.8 1186 ROP MWD150 FT/H 3.01 1118.05 112.671 1124 GR MWD150 API 27.18 156.47 61.8597 1127 First Reading 11385.5 11416.5 11385.5 Last Reading 11978 11978 11948.5 First Reading For Entire File .......... 11385.5 Last Reading For Entire File ........... 11978 File Trailer Service name ............. STSLIB.007 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/12 Maximum Physical Record..65535 File Type ................ LO Next File Name ........... STSLIB.008 Physical EOF File Header Service name ............. STSLIB.008 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/12 Maximum Physical Record..65535 File Type ................ LO Previous File Name ....... STSLIB.007 Comment Record FILE HEADER FILE NUMBER: 8 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 16 DEPTH INCREMENT: .5000 FILE SUMMARY VENDOR TOOL CODE START DEPTH STOP DEPTH GR 11949.0 12360.0 ROP 11978.5 12391.0 $ LOG HEADER DATA DATE LOGGED: SOFTWARE SURFACE SOFTWARE VERSION: DOWNHOLE SOFTWARE VERSION: DATA TYPE (MEMORY OR REAL-TIME): TD DRILLER (FT): TOP LOG INTERVAL (FT): BOTTOM LOG INTERVAL (FT) : BIT ROTATING SPEED (RPM) : HOLE INCLINATION {DEG MINIMUM ANGLE: MAXIMUM ANGLE: TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE NGP NATURAL GAMMA PROBE $ BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLER'S CASING DEPTH (FT): BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY S): MUD PH: MUD CHLORIDES PPM): FLUID LOSS (C3 : RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): MUD AT MAX CIRCULATING TERMPERATURE: MUD FILTRATE AT MT: MUD CAKE AT MT: NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): TOOL STANDOFF (IN): EWR FREQUENCY (HZ): REMARKS: $ # Data Format Specification Record Data Record Type .................. 0 Data Specification Block Type ..... 0 Logging Direction ................. Down Optical log depth units ........... Feet Data Reference Point .............. Undefined Frame Spacing ..................... 60 .lin Max frames per record ............. Undefined Absent value ...................... -999 Depth Units ....................... Datum Specification Block sub-type...0 26-MAY-01 Insite 66.16 Memory 12391.0 91.7 96.0 TOOL NUMBER PB02100HWRG6 3.750 Flo Pro 8.60 65.0 9.5 15600 5.4 .000 .000 .000 .000 .0 160.0 .0 .0 Name Service Order Units Size Nsam Rep DEPT FT 4 1 68 ROP MWD160 FT/H 4 1 68 GR MWD160 API 4 1 68 Code Offset 0 4 8 Channel 1 2 3 Name Service Unit Min Max DEPT FT 11949 12391 ROP MWD160 FT/H 3.18 462.96 GR MWD160 API 26.59 106.21 Mean 12170 97.4761 53.8257 Nsam 885 826 823 First Reading 11949 11978.5 11949 Last Reading 12391 12391 12360 First Reading For Entire File .......... 11949 Last Reading For Entire File ........... 12391 File Trailer Service name ............. STSLIB.008 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/12 Maximum Physical Record..65535 File Type ................ LO Next File Name ........... STSLIB.009 Physical EOF Tape Trailer Service name ............. LISTPE Date ..................... 01/12/12 Origin ................... STS Tape Name ................ UNKNOWN Continuation Number ...... 01 Next Tape Name ........... UNKNOWN Comments ................. STS LIS Writing Library. Reel Trailer Service name ............. LISTPE Date ..................... 01/12/12 Origin ........... ........ STS Reel Name ................ UNKNOWN Continuation Number ...... 01 Next Reel Name ........... UNKNOWN Comments ................. STS LIS Writing Library. Scientific Scientific Technical Services Technical Services Physical EOF Physical EOF End Of LIS File Sperry-Sun Drilling Services LIS Scan Utility SRevision: 3 $ LisLib SRevision: 4 $ Thu Dec 13 14:45:40 2001 Reel Header Service name ............. LISTPE Date ..................... 01/12/13 Origin ................... STS Reel Name ................ UNKNOWN Continuation Number ...... 01 Previous Reel Name ....... UNKNOWN Comments ................. STS LIS Writing Library. Scientific Technical Services Tape Header Service name ............. LISTPE Date ..................... 01/12/13 Origin ................... STS Tape Name ........ , ........ UNKNOWN Continuation Number ...... 01 Previous Tape Name ....... UNKNOWN Comments ................. STS LIS Writing Library. Scientific Technical Services Physical EOF Comment Record TAPE HEADER Prudhoe Bay MWD/MAD LOGS WELL NAME: API NUMBER: OPERATOR: LOGGING COMPANY: TAPE CREATION DATE: JOB DATA JOB NUMBER: LOGGING ENGINEER: OPERATOR WITNESS: MWD RUN 1 AK-MW-10156 B. JAHN SARBER/WHITL G-25A PB1 500292165270 BP Exploration (Alaska) Inc. Sperry Sun 13-DEC-01 MWD RUN 3 AK-MW-10156 B. JAHN SARBER/WHITL MWD RUN 4 AK-MW-10156 B. JAHN SARBER/WHITL JOB NUMBER: LOGGING ENGINEER: OPERATOR WITNESS: SURFACE LOCATION SECTION: TOWNSHIP: RANGE: FNL: FSL: FEL: FWL: MWD RUN 5 AK-MW-10156 B. JAHN SARBER/WHITL MWD RUN 6 AK-MW-10156 B. JAHN SARBER/WHITL 12 lin 13E 2617 1973 R, ,.CEiVED DEC 2 8 2001 Alaska Oi~ & Gas Co~s. Co~m~issior, .Anckera,qe ELEVATION (FT FROM MSL 0) KELLY BUSHING: DERRICK FLOOR: GROUND LEVEL: WELL CASING RECORD OPEN HOLE 1ST STRING 2ND STRING 3RD STRING PRODUCTION STRING REMARKS: 72.40 .00 .00 CASING DRILLERS BIT SIZE (IN) SIZE (IN) DEPTH (PT) 3.750 5.500 10168.0 1. ALL DEPTHS ARE MEASURED DEPTHS (MD) UNLESS OTHERWISE NOTED. 2. ALL TRUE VERTICAL DEPTHS ARE SUBSEA TRUE VERTICAL DEPTHS (TVDSS). 3. G-25A PB1 WAS AN INADVERTENT OPENHOLE SIDETRACK DURING RUN 6. G-25A PB2 WAS PLUGGED AND ABANDONED AFTER ENCOUNTERING POOR GEOLOGY AND LEAVING A FISH IN THE HOLE ON RUN 11. G-25A WAS COMPLETED ON RUN 16. 4. MWD RUNS 1, 4, AND 5 ARE DIRECTIONAL WITH NATURAL GAMMA PROBE (NGP) UTILIZING SCINTILLATION DETECTORS. 5. MWD RUNS 3 AND 6 ARE DIRECTIONAL WITH DUAL GAMMA RAY (DGR) UTILIZING GEIGER-MULLER DETECTORS. 6. DIGITAL DATA SHIFTED TO THE G-25A SCHLUMBERGER MCNL/GR OF 5/27/2001 PER THE E-MAIL OF 8/27/2001 FROM D. SCHNOOR OF BP EXPLORATION (ALASKA) INC. 7. MWD RUNS 1, 3, 4, 5, AND 6 REPRESENT THE MWD DATA FOR WELL G-25A PB1 WITH API% 50-029-21652-70. THIS WELL REACHED A TOTAL DEPTH (TD) OF 11448' MD, 8924.3' TVD. SROP = SMOOTHED RATE OF PENETRATION SGRD = SMOOTHED GAMMA RAY - SCINTILLATION DETECTORS SGRC = SMOOTHED GAMMA RAY - GEIGER-MULLER DETECTORS $ File Header Service name ............. STSLIB.001 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/13 Maximum Physical Record..65535 File Type ................ LO Previous File Name ....... STSLIB.000 Comment Record FILE HEADER FILE NUMBER: 1 EDITED MERGED MWD Depth shifted and clipped curves; all bit runs merged. DEPTH INCREMENT: .5000 # FILE SUMMARY PBU TOOL CODE START DEPTH STOP DEPTH GR 10145.5 11419.0 ROP 10178.0 11448.5 $ # BASELINE CURVE FOR SHIFTS: CURVE SHIFT DATA (MEASURED DEPTH) BASELINE DEPTH 10173 0 10176 5 10179 0 10244 0 10264 5 10297 5 10327 5 10340 0 10346 0 11448 5 $ MERGED DATA SOURCE PBU TOOL CODE MWD MWD MWD MWD MWD # REMARKS: GR 10177 0 10180 5 10183 0 10247 5 10269 0 10302 5 10332 0 10344 0 10350 0 11452 5 EQUIVALENT UNSHIFTED DEPTH BIT RUN NO MERGE TOP MERGE BASE 1 10149.5 10243.5 3 10244.0 10267.5 4 10268.0 10380.5 5 10381.0 10789.0 6 10789.5 11452.5 MERGED MAIN PASS. $ # Data Format Specification Record Data Record Type .................. 0 Data Specification Block Type ..... 0 Logging Direction ................. Down Optical log depth units ........... Feet Data Reference Point .............. Undefined Frame Spacing ..................... 60 .lin Max frames per record. ~ Undefined Absent value ...................... -999 Depth Units ....................... Datum Specification Block sub-type...0 Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 1 68 0 1 ROP MWD FPH 4 1 68 4 2 GR MWD API 4 1 68 8 3 Name Service Unit Min Max DE?T FT 10145.5 11448.5 ROP MWD FPH 0.26 448.44 GR MWD API 13.76 597.59 Mean 10797 70.5261 68.2716 Nsam 2607 2542 2548 First Reading 10145.5 10178 10145.5 Last Reading 11448.5 11448.5 11419 First Reading For Entire File .......... 10145.5 Last Reading For Entire File ........... 11448.5 File Trailer Service name ............. STSLIB.001 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/13 Maximum Physical Record..65535 File Type ................ LO Next File Name ........... STSLIB.002 Physical EOF File Header Service name ............. STSLIB.002 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/13 Maximum Physical Record..65535 File Type ................ LO Previous File Name ....... STSLIB.001 Comment Record FILE HEADER FILE NUMBER: 2 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 1 DEPTH INCREMENT: .5000 FILE SUMMARY VENDOR TOOL CODE START DEPTH STOP DEPTH GR 10149.5 10212.5 ROP 10182.0 10243.5 $ LOG HEADER DATA DATE LOGGED: il-MAY-01 SOFTWARE SURFACE SOFTWARE VERSION: Insite DOWNHOLE SOFTWARE VERSION: 66.16 DATA TYPE (MEMORY OR REAL-TIME): Memory TD DRILLER (FT): 10244.0 TOP LOG INTERVAL (FT) : BOTTOM LOG INTERVAL (FT) : BIT ROTATING SPEED (RPM): HOLE INCLINATION (DEG MINIMUM ANGLE: 35.4 MAXIMUM ANGLE: 35.4 TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE NGP NATURAL GAMMA PROBE $ BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLER'S CASING DEPTH (FT): BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S) : MUD PH: MUD CHLORIDES (PPM): FLUID LOSS (C3): RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): MUD AT MAX CIRCULATING TERMPERATURE: MUD FILTRATE AT MT: MUD CAKE AT MT: NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): TOOL STANDOFF (IN): EWR FREQUENCY (HZ): REMARKS: $ Data Format Specification Record Data Record Type .................. 0 Data Specification Block Type ..... 0 Logging Direction ................. Down Optical log depth units ........... Feet Data Reference Point .............. Undefined Frame Spacing ..................... 60 .lin Max frames per record ............. Undefined Absent value ...................... -999 Depth Units ....................... Datum Specification Block sub-type...0 TOOL NUMBER PB02100HWRG6 3.750 Flo-Pro 8.70 49.0 9.0 44000 7.0 .000 .000 .000 .000 Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 1 68 0 1 ROP MWD010 FPH 4 1 68 4 2 GR MWD010 API 4 1 68 8 3 .0 141.7 .0 .0 Name Service Unit Min Max Mean Nsam DEPT FT 10149.5 10243.5 10196.5 189 ROP MWD010 FPH 4.24 137.47 82.1808 124 GR MWD010 API 15.65 597.59 30.5748 127 First Reading 10149.5 10182 10149.5 Last Reading 10243.5 10243.5 10212.5 First Reading For Entire File .......... 10149.5 Last Reading For Entire File ........... 10243.5 File Trailer Service name ............. STSLIB.002 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/13 Maximum Physical Record..65535 File Type ................ LO Next File Name ........... STSLIB.003 Physical EOF File Header Service name ............. STSLIB.003 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/13 Maximum Physical Record..65535 File Type ................ LO Previous File Name ....... STSLIB.002 Comment Record FILE HEADER FILE NUMBER: 3 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 3 DEPTH INCREMENT: .5000 # FILE SUMMARY VENDOR TOOL CODE START DEPTH STOP DEPTH GR 10213.0 10237.5 ROP 10244 . 0 10267 . 5 $ # LOG HEADER DATA DATE LOGGED: 12-MAY-01 SOFTWARE SURFACE SOFTWARE VERSION: Insite DOWNHOLE SOFTWARE VERSION: 66.16 DATA TYPE (MEMORY OR REAL-TIME): Memory TD DRILLER (FT): 10268.0 TOP LOG INTERVAL (FT): BOTTOM LOG INTERVAL (FT): BIT ROTATING SPEED (RPM): HOLE INCLINATION (DEG MINIMUM ANGLE: 35.0 MAXIMUM ANGLE: 44.2 # TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE TOOL NUMBER DGR DUAL GAMMA RAY PB02100HWRG6 $ # BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): 3.750 DRILLER'S CASING DEPTH (FT): # BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY S): MUD PH: MUD CHLORIDES PPM): FLUID LOSS (C3 : RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): MUD AT MAX CIRCULATING TERMPERATURE: MUD FILTRATE AT MT: MUD CAKE AT MT: NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): TOOL STANDOFF (IN): EWR FREQUENCY (HZ): REMARKS: $ Data Format Specification Record Data Record Type .................. 0 Data Specification Block Type ..... 0 Logging Direction ................. Down Optical log depth units ........... Feet Data Reference Point .............. Undefined Frame Spacing ..................... 60 .lin Max frames per record ............. Undefined Absent value ...................... -999 Depth Units ....................... Datum Specification Block sub-type...0 Flo Pro 8.70 49.0 9.0 44000 7.0 .000 .000 .000 .000 Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 1 68 0 1 ROP MWD030 FPH 4 1 68 4 2 GR MWD030 API 4 1 68 8 3 .0 141.4 .0 .0 Name Service Unit Min Max Mean Nsam DEPT FT 10213 10267.5 10240.3 110 ROP MWD030 FPH 0.26 93.98 37.1062 48 GR MWD030 API 15.53 29.78 23.2802 50 First Reading 10213 10244 10213 Last Reading 10267.5 10267.5 10237.5 First Reading For Entire File .......... 10213 Last Reading For Entire File ........... 10267.5 File Trailer Service name ............. STSLIB.003 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/13 Maximum Physical Record..65535 File Type ................ LO Next File Name ........... STSLIB.004 Physical EOF File Header Service name ............. STSLIB.004 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/13 Maximum Physical Record..65535 File Type ................ LO Previous File Name ....... STSLIB.003 Comment Record FILE HEADER FILE NUMBER: 4 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 4 DEPTH INCREMENT: .5000 FILE SUMMARY VENDOR TOOL CODE START DEPTH GR 10238.0 ROP 10268.0 $ LOG HEADER DATA DATE LOGGED: SOFTWARE SURFACE SOFTWARE VERSION: DOWNHOLE SOFTWARE VERSION: DATA TYPE (MEMORY OR REAL-TIME): TD DRILLER (FT): TOP LOG INTERVAL (FT): BOTTOM LOG INTERVAL (FT): BIT ROTATING SPEED (RPM): HOLE INCLINATION (DEG MINIMUM ANGLE: MAXIMUM ANGLE: # STOP DEPTH 10344.5 10380.5 TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE NGP NATURAL GAMMA PROBE $ BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLER'S CASING DEPTH (FT): BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S): MUD PH: MUD CHLORIDES (PPM): FLUID LOSS (C3): RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): 12-MAY-01 Insite 66.16 Memory 10381.0 48.4 54.4 TOOL NUMBER PB02100HWRG6 3.750 Flo-Pro 8.70 54.0 8.8 38000 7.0 .000 .0 MUD AT MAX CIRCULATING TERMPERATURE: MUD FILTRATE AT MT: MUD CAKE AT MT: NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): TOOL STANDOFF (IN): EWR FREQUENCY (HZ): REMARKS: $ # Data Format Specification Record Data Record Type .................. 0 Data Specification Block Type ..... 0 Logging Direction ................. Down Optical log depth units ........... Feet Data Reference Point .............. Undefined Frame Spacing ..................... 60 .lin Max frames per record ............. Undefined Absent value ...................... -999 Depth Units ....................... Datum Specification Block sub-type...0 .000 .000 .000 141.7 .0 .0 Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 1 68 0 1 ROP MWD040 FPH 4 1 68 4 2 GR MWD040 API 4 1 68 8 3 Name Service Unit Min Max Mean Nsam DEPT FT 10238 10380.5 10309.3 286 ROP MWD040 FPH 0.46 76.23 38.5282 226 GR MWD040 API 14.03 60.07 22.5853 214 First Reading 10238 10268 10238 Last Reading 10380.5 10380.5 10344.5 First Reading For Entire File .......... 10238 Last Reading For Entire File ........... 10380.5 File Trailer Service name ............. STSLIB.004 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/13 Maximum Physical Record..65535 File Type ................ LO Next File Name ........... STSLIB.005 Physical EOF File Header Service name ............. STSLIB.005 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/13 Maximum Physical Record..65535 File Type ................ LO Previous File Name ....... STSLIB.004 Comment Record FILE HEADER FILE NUMBER: 5 RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 5 DEPTH INCREMENT: .5000 # FILE SUMMARY VENDOR TOOL CODE START DEPTH GR 10345.0 ROP 10381.0 $ LOG HEADER DATA DATE LOGGED: SOFTWARE SURFACE SOFTWARE VERSION: DOWNHOLE SOFTWARE VERSION: DATA TYPE (MEMORY OR REAL-TIME): TD DRILLER (FT) : TOP LOG INTERVAL (FT): BOTTOM LOG INTERVAL (FT): BIT ROTATING SPEED (RPM): HOLE INCLINATION (DEG MINIMUM ANGLE: MAXIMUM ANGLE: # STOP DEPTH 10752.5 10789.0 TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE NGP NATURAL GAMMA PROBE $ BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLER'S CASING DEPTH (FT): BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S): MUD PH: MUD CHLORIDES (PPM): FLUID LOSS (C3): RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): MUD AT MAX CIRCULATING TERMPERATURE: MUD FILTRATE AT MT: MUD CAKE AT MT: NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): 13-MAY-01 Insite 66.16 Memory 10789.0 62.7 88.4 TOOL NUMBER PB02100HWRG6 3.750 Flo-Pro 8.70 54.0 8.8 38000 7.0 .000 ,000 .000 ,000 .0 145.9 .0 .0 TOOL STANDOFF (IN) : EWR FREQUENCY (HZ): REMARKS: $ # Data Format Specification Record Data Record Type .................. 0 Data Specification Block Type ..... 0 Logging Direction ................. Down Optical log depth units ........... Feet Data Reference Point .............. Undefined Frame Spacing ..................... 60 .lin Max frames per record ............. Undefined Absent value ...................... -999 Depth Units ....................... Datum Specification Block sub-type...0 Name Service Order Units Size Nsam Rep Code Offset Channel DEPT FT 4 1 68 0 1 ROP MWD050 FPH 4 1 68 4 2 GR MWD050 API 4 1 68 8 3 Name Service Unit Min Max Mean Nsam DEPT FT 10345 10789 10567 889 ROP MWD050 FPH 0.5 183.49 78.3262 817 GR MWD050 API 13.76 221.64 59.2 816 First Reading 10345 10381 10345 Last Reading 10789 10789 10752.5 First Reading For Entire File .......... 10345 Last Reading For Entire File ........... 10789 File Trailer Service name ............. STSLIB.005 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/13 Maximum Physical Record..65535 File Type ................ LO Next File Name ........... STSLIB.006 Physical EOF File Header Service name ............. STSLIB.006 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/13 Maximum Physical Record..65535 File Type ................ LO Previous File Name ....... STSLIB.005 Comment Record FILE HEADER FILE NUMBER: RAW MWD Curves and log header data for each bit run in separate files. BIT RUN NUMBER: 6 DEPTH INCREMENT: .5000 FILE SUMMARY VENDOR TOOL CODE START DEPTH STOP DEPTH GR 10753.0 11423.0 ROP 10789.5 11452.5 $ LOG HEADER DATA DATE LOGGED: 15-MAY-01 SOFTWARE SURFACE SOFTWARE VERSION: Insite DOWNHOLE SOFTWARE VERSION: 66.16 DATA TYPE (MEMORY OR REAL-TIME): Memory TD DRILLER (FT): 11452.0 TOP LOG INTERVAL (FT): BOTTOM LOG INTERVAL (FT): BIT ROTATING SPEED (RPM) : HOLE INCLINATION (DEG MINIMUM ANGLE: 83.6 MAXIMUM ANGLE: 90.8 TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE TOOL NUMBER DGR DUAL GAMMA RAY PB02100HWRG6 $ # BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): 3.750 DRILLER'S CASING DEPTH (FT): # BOREHOLE CONDITIONS MUD TYPE: Flo-Pro MUD DENSITY (LB/G): 8.70 MUD VISCOSITY (S): 50.0 MUD PH: 8.5 MUD CHLORIDES (PPM): 33000 FLUID LOSS (C3): 7.8 RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): .000 .0 MUD AT MAX CIRCULATING TERMPERATURE: .000 141.1 MUD FILTRATE AT MT: .000 .0 MUD CAKE AT MT: .000 .0 NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): TOOL STANDOFF (IN): EWR FREQUENCY (HZ): REMARKS: $ # Data Format Specification Record Data Record Type .................. 0 Data Specification Block Type ..... 0 Logging Direction ................. Down Optical log depth units ........... Feet Data Reference Point .............. Undefined Frame Spacing ..................... 60 .lin Max frames per record ............. Undefined Absent value ...................... -999 Depth Units ....................... Datum Specification Block sub-type...0 Name Service Order Units Size Nsam Rep DEPT FT 4 1 68 ROP MWD060 FPH 4 1 68 GR MWD060 API 4 1 68 Code Offset 0 4 8 Channel 1 2 3 Name Service Unit Min Max DEPT FT 10753 11452.5 ROP MWD060 FPH 0.71 448.44 GR MWD060 API 32.91 489.05 First Last Mean Nsam Reading Reading 11102.8 1400 10753 11452.5 71.1496 1327 10789.5 11452.5 86.3281 1341 10753 11423 First Reading For Entire File .......... 10753 Last Reading For Entire File ........... 11452.5 File Trailer Service name ............. STSLIB.006 Service Sub Level Name... Version Number ........... 1.0.0 Date of Generation ....... 01/12/13 Maximum Physical Record..65535 File Type ................ LO Next File Name ........... STSLIB.007 Physical EOF Tape Trailer Service name ............. LISTPE Date ..................... 01/12/13 Origin ................... STS Tape Name ................ UNKNOWN Continuation Number ...... 01 Next Tape Name ........... UNKNOWN Comments ................. STS LIS Writing Library. Reel Trailer Service name ............. LISTPE Date ..................... 01/12/13 Origin ................... STS Reel Name ................ UNKNOWN Continuation Number ...... 01 Next Reel Name ........... UNKNOWN Comments ................. STS LIS Writing Library. Scientific Scientific Technical Services Technical Services Physical EOF Physical EOF End Of LIS File