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200-142
Im~ Project Well History File Cowi~age 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. Golor items: DIGITAL DATA" [] Diskettes, No. OVERSIZED (Scannable) [] Maps: [] Grayscale items: [] Poor Quality Originals: [] Other: NOTES: [] Other, No/Type BY~ BEVERLY ROBIN VINCENT SHERY~INDY · [] Other items scannable by large scanner OVERSIZED (Non-Scannable) [] Logs of various kinds [] Other Project Proofing BY; BEVERLY ROBIN VINCENT SHERY~WlNDY Scanning Preparation x 30 = + BY: BEVERLY ROBIN VINCENT SHERYL(~~/INDY Production Scanning Stage 1 PAGE COUNT FROM SCANNED FILE: PAGE COUNT MATCHES NUMBER IN SCANNING PREPARATION: XYES ~ NO DATE: ,Z-/-,~i~/S/ Stage 2 IF NO IN STAGE 1, PAGE(S) DISCREPAN~I~'W~RE FOUND: _...~YES ,,., NO RESCANNED BY: BEVERLY ROBIN VINCENT SHERYL MARIA WINDY DATE; Isl General Notes or Comments about this file: Quality Checked 12110102Rev3NOTScanned.wpd WG4 0007►Zi/( • STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISS N WELL COMPLETION OR RECOMPLETION REPORT AND LOG la. Well Status: ❑ OiI ❑ Gas ❑ SPLUG ❑ Other ® Abandoned ❑ Suspended 1b. Well Class: 20AAC 25.105 20AAC 25. 110 ® Development ❑ Exploratory ❑ GINJ ❑ WINJ ❑ WAG ❑ WDSPL ❑ Other No. of Completions Zero ❑ Service ❑ Stratigraphic 2. Operator Name: 5. Date Comp., Susp., or Aband.: 12. Permit to Drill Number. BP Exploration (Alaska) Inc. 5/30/2011 200 - 142 311 - 119 3. Address: 6. Date Spudded: 13. API Number: P.O. Box 196612, Anchorage, Alaska 99519 - 6612 11/30/2000 50 029 - 21763 - 02 - 00 4a. Location of Well (Governmental Section): 7. Date T.D. Reached: 14. Well Name and Number: Surface: 12/04/2000 PBU E -23B 1820' FNL, 501' FEL, SEC. 06, T11 N, R14E, UM 8. KB (ft above MSL): 67.95' 15. Field / Pool(s): Top of Productive Horizon: 2086' FNL, 870' FWL, SEC. 08, T11 N, R14E, UM GL (ft above MSL): 30.15' Prudhoe Bay Field / Prudhoe Bay Total Depth: 9. Plug Back Depth (MD +TVD): Oil Pool 3380' FNL, 158' FWL, SEC. 08, T11 N, R14E, UM 10850' 8766' 4b. Location of Well (State Base Plane Coordinates, NAD 27): 10. Total Depth (MD +TVD): 16. Property Designation: Surface: x 664486 y 5975244 Zone ASP4 12706' 8889' ADL 028304 TPI: x- 665998 y- 5969730 Zone ASP4 11. SSSV Depth (MD +TVD): 17. Land Use Permit: Total Depth: x- 665320 Y 5968421 Zone- ASP4 N/A 18. Directional Survey: 0 Yes ® No 19. Water depth, if offshore: 20. Thickness of Permafrost (TVD): (Submit electronic and printed information per 20 AAC 25.050) N/A ft MSL 1900' (Approx.) 21. Logs Obtained (List all logs here and submit electronic and printed information per 20 AAC 25.071): 22. Re -Drill /Lateral Top Window MD/TVD: MWD, GR, CNL 11049' 8848' 23. CASING, LINER AND CEMENTING RECORD SETTING DEPTH MD SETTING DEPTH TVD HOLE AMOUNT CASING WT. PER FT. GRADE ToP BOTTOM TOP BOTTOM SIZE CEMENTING RECORD PULLED 20" Conductor Surface 110' Surface 110' 8 cu vds Concrete 13 -3/8" 72# L -80 / S -95 40' 2793' 40' 2647 17-1/2" 1951 cu ft PF 'E'. 1951 cu ft Permafrost 9 -5/8" 47# L -80 36' , 8467' 36' 6606' 12 -1/4" 2315 cu ft Class 'G' 7 -5/8" 29.7# N -80 2983' 4405' 2782' 3723' 9 -5/8" Uncemented Casino Patch 7" 26# L -80 8316' 11049' 6500' 8848' 8 -1/2" 395 cu ft Class 'G' 2 -3/8" 4.39# L -80 10930' 12698' 8806' 8$90' 2 -3/4" 118 cu ft Class 'G' 24. Open to production or injection? ❑ Yes IS No 25. TUBING RECORD If Yes, list each interval open SIZE DEPTH SET (MD) PACKER SET (MD / TVD) (MD +TVD of Top & Bottom; Perforation Size and Number): None 4 -1/2 ", 12.6#, 13Cr80 10363' 10264' / 8289' MD TVD MD TVD 3 -1/2 ", 9.2 #, L -80 10915' - 10966' 10920' / 8801' 26. ACID, FRACTURE, CEMENT SQUEEZE, ETC. ,. - ju r` 2 1 2V' DEPTH INTERVAL (MD)I AMOUNT AND KINpF MATERIAL USED 10850' Set Whipstock 10850' Plug w/ 15 Bbls Class 'G' ✓ 27. PRODUCTION TEST Date First Production: Method of Operation (Flowing, Gas Lift, etc.): Not on Production N/A _ Date of Test: Hours Tested: Production For OIL -BBL: GAS-MCF: WATER -BBL: CHOKE SIZE: GAS-OIL RATIO: Test Period Flow Tubing Casing Press: Calculated OIL-BBL: GAS-MCF: WATER -BBL: OIL GRAVITY -API (CORR): Press. 24 -Hour Rate 28. CORE DATA Conventional Core(s) Acquired? ❑ Yes ® No Sidewall Core(s) Acquired? ❑ Yes 0 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 afSlOevivegogypEreyts per 20 AAC 250.071. t None ).ltv • Lt. ,'f '`-t'' RBDMS JUN 24 2011 ec ol;iinission zi�� psi � t�H� �� Form 10-407 Revised 12/2009 CONTINUED REVERSE Su bmit Original Only g. 6 ..2e1-1( 29. GEOLOGIC MARKERS (List all formations and markcountered): 30. 11,IATION TESTS NAME MD TVD Well Tested? ❑ Yes ® No Permafrost Top If yes, list intervals and formations tested, briefly summarizing test Permafrost Base results. Attach separate sheets to this form, if needed, and submit detailed test information per 20 AAC 25.071. Zone 1B 10940' 8811' None 13N 11100' 8862' 13P 11107' 8865' 12N 11173' 8887' Formation at Total Depth (Name): 31. List of Attachments: Summary of Pre -Rig and Daily Drilling Reports, Well Schematic Diagram 32. I hereby certify that the is foregoin true and correct to the best of my knowledge. O � Signed: Terrie Hubble /' J � J v t(iii IA f // Title: Drilling Technologist Date: /1/ PBU E - 23B 200 - 142 311 -119 Prepared By Name/Number. Terrie Hubble, 564 -4628 Well Number Permit No. / Approval No. Drilling Engineer: Matt Ross, 564 -5782 INSTRUCTIONS I General: This form is designed for submitting a complete and correct well completion report and log on all types of lands and leases in Alaska. Submit a well schematic diagram with each 10-407 well completion report and 10-404 well sundry report when the downhole well design is changed. Item la: Classification of Service Wells: Gas Injection, Water Injection, Water - Altemating -Gas Injection, Salt Water Disposal, Water Supply for Injection, Observation, or Other. Multiple completion is defined as a well producing from more than one pool with production from each pool completely segregated. Each segregated pool is a completion. Item 4b: TPI (Top of Producing Interval). Item 8: The Kelly Bushing and Ground Level elevation in feet above mean sea level. Use same as reference for depth measurements given in other spaces on this form and in any attachments. Item 13: The API number reported to AOGCC must be 14 digits (ex: 50 -029- 20123- 00 -00). Item 20: Report true vertical thickness of permafrost in Box 20. Provide MD and TVD for the top and base of permafrost in Box 28. Item 23: Attached supplemental records for this well should show the details of any multiple stage cementing and the location of the cementing tool. Item 24: If this well is completed for separate production from more than one interval (multiple completion), so state in item 1, and in item 23 show the producing intervals for only the interval reported in item 26. (Submit a separate form for each additional interval to be separately produced, showing the data pertinent to such interval). Item 27: Method of Operation: Flowing, Gas Lift, Rod Pump, Hydraulic Pump, Submersible, Water Injection, Gas Injection, Shut -In, or Other (explain). Item 28: Provide a listing of intervals cored and the corresponding formations, and a brief description in this box. Submit detailed description and analytical laboratory information required by 20 AAC 25.071. Item 30: Provide a listing of intervals tested and the corresponding formation, and a brief summary in this box. Submit detailed test and analytical laboratory information required by 20 AAC 25.071. Form 10-407 Revised 12/2009 Submit Original Only • E -23B, Well History (Pre Rig Sidetrack) Date Summary 3/27/2011 T /I /O= 2470/1620NAC. Temp= SI. Bleed WHPs to 300 (Not operable well). No AL. IA FL @ 4437' (between sta #1 & 2). Bled IAP to OT tank from 1620 psi to 650 psi in 2 hrs (fluid to surface). SI as per WIE & monitored for 30 min. IAP increased 70 psi. Unable to complete job due to no TTP in hole. Job incomplete. Final WHPs= 2470/720NAC. 4/27/2011 T /I /0= 2480/1200/20 temp= si MIT IA 3000 psi FAILED [Pre CTD] Bled IAP down Rigged up to IA and pumped 78 bbls of 100° crude to reach test pressure. Failed 3 45 min test 1st test 100/100/100 psi 2nd test 80/80/60 psi 3rd test 80/60/40 psi. Bled IAP down Wing shut swab shut ssv open casing valves open to gauges Final Whp's = 2480/1300/400 4/28/2011 T /I /0= 2470/1280/10. Temp =SI. Bleed IAP to 200 psi or until FTS (pre MIT -IA). No A/L. Initial IA FL =432'. Bleed IAP from 1280 psi to 470 psi in 2 hrs, returns went to gas /fluid, continued bleed with flow choked for 30 minutes, IAP unchanged. Monitored for 30 minutes. IAP increased from 470 psi to 550 psi. Continued bleed on IAP. Bled IAP from 550 psi to 330 psi in 3.5 hrs, (choked back for gas returns). Monitored for 30 minutes, IAP increased from 330 psi to 370 psi. Job complete. FWHPs= 2470/370/10. 4/29/2011 MIT -IA PASSED to 3000 psi (CTD Prep) Pumped 3 bbls meth, 39 bbls crude and, 6 bbls diesel down IA to reach test pressure. MIT -IA passed on second test. IA lost 20 psi in the 1st 15 mins and 10 psi in the 2nd 15 mins for a total Toss of 30 psi during the 30 min test. Bled IAP down to 300 psi. Final WHP's = 2460/300/0 5/1/2011 T /I /O= SSV /400/0 Temp =SI PPPOT-T (PASS) (Pre CTD) PPPOT -T : RU 1 HP BT onto THA test void 50 psi bled to 0 psi, flushed void till clean returns achieved. Pressure void to 5000 psi for 30 minute test, 5000/ 15 minutes, 5000/ 30 minutes. Bled void to 0 psi, RD all test equipment. Cycle LDS "Standard" all moved with no problems and are in good visual condition. 5/5/2011 WELL S/I ON ARRIVAL. DRIFT TUBING WITH 3.70" X 20' DUMMY WHIPSTOCK TO 10900' SLM. RAN SLB SBHPS, MADE TOP 2 STOPS ON PROGRAM, UNABLE TO MAKE IT TO THE 3rd STOP SD @ 10896' SLM (GOOD DATA). WELL S/I ON DEPARTURE, PAD OP NOTIFIED. 5/6/2011 WELL SHUT -IN ON ARRIVAL. INITIAL T /I /O = 1500 / 600 / 0 RIGUP WIRELINE TOOLS AND WELLHEAD EQUIPMENT. RIH WITH MH -22 (8 X 3) / ERS / SWIVEUPL- CENTRALIZER (X2) / WPPT / FIRING HEAD / BAKER -10/ WHIPSTOCK. OAL = 53', OD= 3.625 ", WEIGHT = 750 LB, FISHING NECK = 1 -3/8 ". 5/7/2011 CORRELATE TO GEOLOGIST PDC LOG AND SLB MEMORY COIL FLAG LOG DATED 10- MAY -2010. SET BAKER 4.5" X 7" TT GENERATION II WHIPSTOCK TOP AT 10839', WHIPSTOCK BOTTOM AT 10856.5', TWO RA TAGS AT 10849'. CCL TO WHIPSTOCK TOP = 14.1'. WHIPSTOCK FACE SET AT 4.2 DEG LEFT OF HIGH SIDE. GOOD INDICATION OF FIRE. LOST 450 LB STATIC WEIGHT. TAG TO CONFIRM. JOB COMPLETED - NOTIFIED PAD OP OF WELL STATUS. 5/9/2011 MIRU CTU. M/U BTT 3.8" LH Milling BHA. Kill well with KCL. Pump KCL with Safelube while RIH at 80 fpm. Tag XN nipple at 10352'. Time mill down. Ream XN up /down. Drift to 10400 clean. Dry drift thru XN without any resitance. Pooh. (Post mill measures 3.79 "). 5/10/2011 RIH w/ slick 2" nozzle. Load CT backside w/ 140 bbls diesel. Tag whipstock and correct depth to 10850. PU Hand flag pipe @ 10840'. Perform injectivity test down coil w/ kcl. PJSM. Pump 15 bbl, 15.8 PPG, G Cement. Sqz 7 bbl cement from flag, lay in 8 bbl cement. Hold SQZ Press for 30 min. and jet out cement back to flag at 10840' with Biozan. Chase Biozan to surface at 80 %. Freeze protect tubing to 2500'. Jet Stack. Perform weekly BOPE pressure / function testing. Chart and record tests. Good BOPE tests. No failures. N/D BOPE. N/U Tree cap and PT. Secure well. Rig down. Job Completed. 5/15/2011 T /I /0= 820/840/20 MIT T PASS to 1000 psi (Pre CTD) Lost 0 first 15 min lost 0 2nd 15 min pumped 19 bbls meth. Final WHP= 500/840/20 Page 1 of 2 • • E -23B, Well History (Pre Rig Sidetrack) Date Summary 5/19/2011 T /I /O = 500/1000/0. Conduct PJSM. Verified barriers. Pressure tested swab valve from above to 500 psi low, 3500 psi high, passed. Set 4" 'H' CIW TWC @ 115" w/ 1- 1' ext. Torque all tree flanges to API specifications. (See log for details) Shell tested tree against TWC to 500 psi low, 5000 psi high, passed. Pull 4" 'H' CIW TWC. Lubricator was tested to 300 psi. low, 3500 psi. high each time it was rigged up. 5/21/2011 T /I /0= 400,1000,Vac. Temp= SI. Bleed WHPs — 0 psi (CTD Prep). IA FL near surface. Bled IAP to slop trailer from 1000 psi to 350 psi in 2 hrs (gas & fluid). Unable to complete job due to CH2 crew on location to remove wellhouse. Final WHPs= 400 /350Nac. Job incomplete. 5/22/2011 T /I /0= 420/430Nac. Temp= SI. Bleed WHPs to 0 psi (pre -CTD). Wellhouse & flowline already removed. T FL @ surface. Bled TP from 420 psi to 200 psi in 15 minutes. IA FL near surface. Bled IAP from 430 psi to 290 psi in 6 hours (Fluid to surface). Periodically shutting bleed to allow gas to migrate up through fluid and waiting for bleed tank to be vac out. Shut -in and monitor for 30 minutes, TP & IAP unchanged. Shift change, night crew will continue. Final WHP's= 200 /290Nac. Job incomplete. 5/23/2011 T /I /0= 200 /370Nac. Temp = SI. Bleed WHPs to 0 psi (CTD Prep). TBG FL @ surface, IA FL @ 165' (9 bbls). IAP increased 80 psi since day shift. Bled TP from 200 psi to 0 psi in 15 mins (bled back 10 gallons of crude). Bled IA from 370 psi to 40 psi in 7.5 hrs (gas /fluid) bled back 5.4 bbls of crude and all gas during the last 4 hrs of bleed. Monitor for 30 mins, IAP increased 30 psi. IA FL @ 320'. Final WHPs = 0 /70Nac. 5/24/2011 T /I /0= ? ? /20Nac. Temp =Sl. Bleed WHPs to 0 psi. (Pre -CTD). No well house, flowline, or AL. IA FL @ 385'. Bled IAP from 20 psi to 2 psi in 4.5 hr (gas). No Monitor. Final WHPs= ? ? /2Nac. Job complete. 5/25/2011 T /I /0= 2 /26NAC. Temp =SI. WHPs (pre -CTD). IAP increased from 2 psi to 26 psi overnight. Note; well house has been removed and flowline disconnected. 5/25/2011 T /I /O= 0/0/0; Conduct PJSM; Verify barriers (passed); Install lubricator with TWC & setting tool; Test to 350 & 3500 psi for 5 min. (passed); Set 4- 1/16" CIW "H" TWC #283 thru tree for Nordic 1 to move on; 1- 1' ext. used, tagged @ 114 "; Test against TWC to 350 & 3500 psi for 5 min. (passed); RD lubricator and install tree cap, pressure test to 500 psi for 5 min. (passed) RDMO No Problems 5/26/2011 T /I /O= SSV /40Nac. Temp =SI. Bleed WHP's to 0 psi. (pre -CTD). IA FL @ 546' (30 bbl). Bled IAP from 40 psi to 10 psi in 4 hours 30 minutes. Monitor for 20 minutes during rig down. IAP increased 6 psi to 16 psi, no change in OAP. Final WHPs= SSV /16Nac. 5/27/2011 T /I /O= SSV /32Nac. Temp =SI. Bleed WHP's to 0 psi. (Pre CTD). IAP increased 16 psi overnight. IA FL @ 540' (29 bbl). Bled IAP from 32 psi to 3 psi in 7 hours 30 minutes, rig down & monitor for end of shift. IAP increased 2 psi during 15 minute monitor. Final WHP's= SSV /5Nac. 5/28/2011 T /I /O= SSV /12NAC. Temp =SI. Bleed WHPs to 0 psi (Pre CTD). Bled IAP from 12 psi to 1 psi in 4 hrs. Monitored for 1 hr. During monitor IAP increased from 1 psi to 5 psi. Job complete. FWHPs = SSV /5NAC. 5/28/2011 T /I /O= BPV /15Nac. Temp = SI. Bleed WHPs to 0 psi. (Pre CTD). IAP increased 10 psi over the past 10 hrs. IA FL @ 582' (31 bbls). Bled IAP from 15 psi to 0+ psi in 2.5 hrs. Monitor 30 mins during rig down IAP increased 5 psi. Final WHPs = BPV /5Nac. 5/28/2011 T /I /O= NA/15 /0 Bled both existing IA valves to 0 psi. Verified 0 psi build up. Removed blind flanges and added a second IA valve to each side. Replaced blind flanges. Torqued to specs and pressure tested low /300 psi pass, high /3500 psi. Pass, no problems. Job complete. Page 2 of 2 • • III . North America - ALASKA - BP Page 1 OW Operation Summary Report . Common Well Name: E -23 IAFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 5/29/2011 l End Date: 1X3- 0100H -C 1 1X3- 0100H -C (2,062,962.00 ) Project: Prudhoe Bay Site: PB E Pad Rig Name /No.: NORDIC 1 Spud Date/Time: 11/19/1987 12:00:OOAM Rig Release: Rig Contractor: NORDIC CALISTA UWI: 500292176300 Active Datum: E -23 @68.05ft (above Mean Sea Level) Date I From - To 1 Firs I Task ' Code NPT NPT Depth I Phase Description of Operations (hr) 1 (ft) 5/28/2011 18:00 20:30 2.50 RIGD P PRE I I RIG DOWN — - 20:30 21:00 0.50 RIGD P I PRE PJSM WITH SECURITY TO MOVE RIG. 21:00 00:00 3.00 MOB P PRE JACK RIG UP, MOVE TO E-PAD. 5/29/2011 , 00:00 - 07:00 7.00 MOB P PRE 1ACCEPT RIG @ 00:01 HRS. !CONTINUE TO RIG UP. ORDER FLUIDS. SPOT CUTTINGS TANK AND FLOWBACK . TANK. GREASE CREW ON LOCATION @ 04:15 HRS. PVT 264 BBLS 8.6 PPG MUD 07:00 - 15:45 , 8.75 BOPSUR P PRE i TEST BOP COMPONENTS TO 250 PSI LOW, 1 3500 PSI HIGH, TEST ANNULAR BAG TO 250 PSI LOW, 2500 PSI HIGH WITH 2 3/8" AND 3 1/2" TEST JOINTS. AOGCC REP BOB NOBLE, P) ' WSL ROB O'NEAL, TOOLPUSHER JAY /( MURPHY WITNESS TEST. TEST PACKOFFS, /fi REEL IRON, AND QUICK TEST SUB TO 3500 : -, _ _ PSL 15:45 - 16:30 0.75 RIGU P PRE CONDUCT RIG EVACUATION DRILL. CONDUCT PRE -SPUD MEETING WITH CREW. i CONDUCT AAR. I- 116:30 - 18:30 I 2.00 RIGU P PRE !PUMP BACK E -LINE. CUT 330' COIL TO FIND 1 CABLE. 18:30 - 20:00 ' 1.50 RIGU P PRE I CONDUCT RIG EVACUATION / H2S / MAN DOWN DRILL & AAR. DISCUSS GAPS IN DRILL 1 T — — PERFORMANCE. HOLD PRE -SPUD MEETING. 20:00 - 00:00 I 4.00 RIGU P PRE I PUMP E -LINE SLACK FORWARD. P/T QUICK TEST SUB. RE -HEAD & P/T BHI CHECK I VALVES PER WELL PLAN. CHECK VALVES TESTED TO 250 PSI LOW AND 1500 PSI HIGH. , SEE ATACHED SCANNED GRAPH FROM I PRESSURE TEST OF SUCCESSFUL TEST. 5/30/2011 100:00 02:30 1 2.50 KILLW P 1 WEXIT , RU LUBRICATOR. PRESSURE TEST LUBRICATOR TO 250 PSI LOW, 3500 PSI I HIGH. PULL TWC. FLOW CHECK WELL. - STATIC, 0- PSI ON WELL / NO VAC. ' 02:30 - 04:30 2.00 STWHIP P WEXIT PJSM. P/U & M/U MILL OUT BHA: 3.80" HCC WINDOW MILUSTRING MILL, 2 -7/8" X -TREME MOTOR WITH .6 AKO, XO, (2) -JTS I I ' 2 -3/8" PH 6, XO,XO, (MWD) HOT /DGS/DPS/EDC/POW ERCOMMS/SUB/LQC , UQC, XO & CC. 04:30 - 05:00 1 0.50 I STWHIP P WEXIT WAIT ON XO, 2 -3/8" PH-6 x 2 -3/8" PAC. HOLD: KICK W/ NON SHEARABLES ACROSS I THE STACK DRILL. :WELL SECURE IN 98 SECONDS. HOLD AAR ON DRILL. 05:00 - 05:30 0.50 1 STWHIP I P WEXIT I FLOW CHECK WELL. CONTINUE TO M/U BHA. 05:30 06:30 1.00 ! STWHIP P ' � WEXIT PUMP 1 1/2 TIMES COIL VOLUME TO PUMP _ E -LINE FORWARD 06:30 - 08:30 2.00 STWHIP P WEXIT RIH WITH MILLING BHA TO 10443'. ----- - - - -- 08:30 - 09:30 - 1.00 1 STWHIP P WEXIT LOG FROM 10,445' TO 10,497' WITH A -7' I CORRECTION. OBTAIN AND RECORD SLOW PUMP PRESSURES FOR KILL SHEET. Printed 6/6/2011 1:38:25PM ,rth America - ALASKA - BP Page 2 8f3 Operation Summary Report Common Well Name: E -23 — AFE No Event Type: RE- ENTER- ONSHORE (RON) I Start Date: 5/29/2011 End Date: X3- 0100H -C 1X3- 0100H -C (2,062,962.00 ) Project: Prudhoe Bay Site: PB E Pad Rig Name /No.: NORDIC 1 1 Spud Date/Time: 11/19/1987 12:00 :OOAM Rig Release: Rig Contractor: NORDIC CALISTA UWI: 500292176300 Active Datum: E -23 ©68.05ft (above Mean Sea Level) Date From - To Hrs Task 1 Code (hr) i NPT NPT Depth Phase Description of Operations 4� ) i 1 (ft) 09:30 10:30 1.00 1 ST VHIP P WEXIT 'CONTINUE TO RIH AND WITH NO PROBLEMS. TAG AT 10,739' BUT NO MOTOR WORK TO INDICATE TOC. MOTOR WORK PICKED UP AT 10,752' TO INDICATE TOC. DRILL THROUGH CEMENT STRINGERS WITH MILL 1AT LOW SIDE. ROP - 160 - 180 FPH. !10:30 - 16:30 6.00 STWHIP P WEXIT ' SOLID TAG AT 10,843', EXPECTED TAG AT i 10,843', TO CONFIRM TOP OF WHIPSTOCK AT ,i). a 10,843'. PICK UP AND RE -TAG. TIME MILL 1 PER WELL PLAN WITH HIGH SIDE I ORIENTATION. - FREE SPIN 2160 AT 2.6 BPM PSI - 2020 PSI AT 2.2 BPM, MW IN 8.5, MW OUT ' 8.5, WOB .6K 1- AT 10,844.3', INCREASE TO 2.5 BPM, 2305 PSI, WOB STILL AT .6K - AT 10,845', FLOW AT 2.6 BPM, 2355 PSI, WOB .7K 16:30 - 20:00 3.50 STWHIP P WEXIT !CONTINUE MILLING WINDOW PER BAKER SUPERVISOR. TIME MILL FROM 10848.2 AT 1 FPH. -2512 PSI AT 2.58 BPM. i -WOB = 2.3K, ECD = 9.59 PPG. 20:00 - 20:30 ' 0.50 STWHIP 1 P WEXIT HOLD RIG EVACUATION DRILL & AAR WITH 1 ' NEW CREW 20:30 - 23:30 3.00 STWHIP j P WEXIT I MILL WINDOW & 10' OF NEW HOLE TO 10,861' MD. -2577 PSI AT 2.57 BPM. 23:30 00 :00 0.50 STWHIP _j WOB = 2.3K, ECD = 9.64 PPG. -_. II ' --_ P — WEXIT ' REAM AND BACK REAM WINDOW. - - - -- _ - - CIRCULATE AND CLEAN HOLE. PUMP 2.57 _ BPM / 2390 PSI. 5/31/2011 00:00 - 02:30 2.50 STWHIP ; P WEXIT I CONTINUE TO REAM WINDOW. CIRCULATE AND CLEAN HOLE. PUMP 2.57 BPM / 2390 PSI. 02:30 - 05:30 3.00 1 STWHIP P WEXIT PULL INTO WINDOW & OPEN EDC. CIRCULATE. I -FLOW CHECK WELL - OK. POH W/ MILLING BHA. PUMP: 3.47 BPM / 2560 PSI. FLOW CHECK WELL © 500'. POH. UD MILLING BHA. - DIAMOND MILL GAUGED AT 3.72 ". DIAMOND ' MILL HAS GOOD WEAR PATTERN ON INTERIOR SECTION; OUTSIDE SECTION WORN SMOOTH. - STRING MILL GAUGED AT 3.79" NO GO. VERY GOOD CONDITION. BAKER REP CONFIRMS THAT WEAR PATTERN SHOWS GOOD WINDOW SECTION MILLED. 05:30 - 07:15 1.75 1 DRILL 1 P PROD1 P/U & M/U DRILLING BHA: 4 1/8" HCC BI- CENTER BIT, 3 1/8" ULTRA XL MOTOR , WITH 2.0 AKO, HOT, USR, DGS, DPS, EDC, POWERCOMMS, SUB WEAR PROTECTOR, 1LQC, UQC, XO, CTC. IDENTIFY SQUARED SHOULDER ON CROSSOVER THAT COULD 1, 1 IMPEDE PULLING INTO WINDOW. BREAK OFF BHA AWAY FROM WELL, GRIND EDGE I j TO TAPER. RESUME BHA MU. 1 , ' CHECK TORQUE ON 3 TREE FLANGE BOLTS. Printed 6/6/2011 1:38:25PM AC TREE= ' MCEVOY SAFETY N S: WELL ANGLE > 70° @ E TUA OR = AX SON E -2 3 B CHROME G LBORE OT SHOWN * ** 4 -12" KB. ELEV = 68.05' BF. ELEV = 31.85' I KOP = 1597' Max Angle = 96° @ 12671' Datum MD = 11003' I 2215' . 1- I 4 -1 /2" HES X NIP, ID = 3.813" I Datum TVD = 8800' SS 120" CONDUCTOR, ID = ? I ? I , 1 2983' H 9 -5/8" X 7 -5/8" BKR LTP PKR, ID = 6.875" I 13 -3/8" CSG, 72 #, L -80 BTRS, ID = 12.347" H 2972' Q '0 ►Q 1,4 GAS LIFT MANDRELS i!i ! ST MD ND DEV TYPE VLV LATCH PORT DATE 7 -5/8" SCAB LNR, 29.7 #, L -80 STL, -I 4405' 2 4071 3513 51 KBG -2 DMY RK 0 10/08/10 .0459 bpf, ID = 6.875" 1 7575 6011 45 KBG -2 DMY RK 0 10/08/10 TOP OF 7" LNR I-I 8316' 8316' H9-5/8" X 7" LTP w /HGR, ID = ?? I Minimum ID = 1.995" @ 10938' 9 -5/8" MILLOUT WINDOW (E -23A) 8467" - 8472' TOP OF 2 -3/8" LINER 10243' H4-112" HES X NIP, ID = 3.813" I 9 -5/8" CSG, 47 #, L -80 BTRS, .0733 bpf, ID = 8.681" H 8467' ( / / / 10264' I-) 7" X 4-1/2" BKR S -3 PKR, ID = 3.875" I 10287' H4-1/2 "HES X NIP, ID = 3.813" I 4 -1/2" TBG, 12.6 #, 13CR -80 VAM TOP, H 10363' .0152 bpf, ID = 3.958" 10350' H4-1/2" HES XN NIP, ID = 3.80" (05/09111) 1 I4 -1/2" WHIPSTOCK (05/08/11) 1 10850' 10363'] -14 -112" WLEG, ID = 3.958" I 17" X 3 -112" ENTRY GUIDE, ID = 3.00" (01/15/08) I 10915' 10850' ESTIMATED TOC (05!10/11) ►••1••1 ■∎••••••••• 10920' -1 7" X 4 -1/2' BKR FB -1 PKR, ID = 4.00" 1 v 1lo �� 0 iii 0 . 'TOP 2 -3/8" LNR! 10938' , j j . . - j G 10938' 4" X 3 -1 /2" XO, ID = 2.992" / / -. 10938' H2-3/8" DEPLOY SLV, ID = 1.995" I • •• •• 10942' I- (3 -112" PKR SWS NIP, ID = 2.75" •ii • I3 -1/2" TBG, 9.2 #, L -80 NSCT, .0087 bpf, ID = 2.992" H 10966' ��' 1 10x54' H3-1/2" PKR SWN XN NIP, ID = 2.635" I BEHIND •�•i 10966' H3-1/2" WLEG, ID = 2.992" I LINER PERFORATION SUMMARY ,v4 PERFORATION ■••� 1 10960' I� ELMD TT LOGGED 01/19/94 I REF LOG: SP -SUN MWD 10/28/93 ■••■ ANGLE AT TOP PERF: 69° @ 11110' ∎•�• Note: Refer to Production DB for historical perf data �� SIZE SPF INTERVAL Opn /Sqz DATE ∎•�•��•\ 7" MILLOUT WINDOW (E- 238)11049' - 11053' ••••• � 1- 11/16" 6 11110 - 11120 S 05/10/11 ►., ••,•���* •. 1- 11/16" 6 11150 - 11170 S 05/10/11 0.ft. �'�.•QQ. 1- 11/16" 6 11180 -11190 S 05/10/11 �/�/�'�♦���,� t �`.•••� ∎ 11200 1- i CIBP(05 /10(10)) 1- 9/16" 6 11260 - 11580 C 07/03/02 7c 4:14 ` 1- 9/16" 6 11620 11680 C 07/03/02 � Ni 4 � � .1. • � � � . �1�♦ 1 ■ PBTD IH 12664' I 1- 11/16" 4 12000 - 12075 C • 12/12/00 - "1 `∎ 1- 11/16" 4 12170 - 12340 C r 12/12/00 _ 1- 11/16" 4 12380 - 12488 C ' 1 2/1 2/00 & ` TD -I 12706' I 1-11/16" 4 12568 - 12662 C r 12/12/00 `I= V 7" LNR, 264, L -80, .0383 bpf, ID = 6.276" IH 11321' 2- 3/8" LNR, 4.64, L -80 FL4S, —I 12708' .0039 bpf, ID = 1.995" DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 12/09/87 AUDI 1 ORIGINAL COM PLETION 05/31/11 ?/ PJC MILL XN NIP (05/09/11) WELL: E 23B 11/08/93 D9 SIDETRACK (E -23A) PERMIT No: 2001420 12/24/93 014 7 -5 /8" SCAB LNR (E -23A) API No: 50- 029 - 21763 -02 12/12/00 N -CDR1 CTD SIDETRACK (E -23B) SEC 6, T11 N, R14E, 1820' FNL & 501' FEL 07/17/08 N4ES RWO 05/12/11 MSS/ PJC P &A (05/10/11) BP Exploration (Alaska) ` • • /SEANPARNELLGOVERNOR sum AND OIL AD GAS 333 W. 7th AVENUE, SUITE 100 CONSERVATION COMIMSSION ANCHORAGE, ALASKA 99501 -3539 PHONE (907) 279 -1433 FAX (907) 276 -7542 John McMullen Engineering Team Leader e� BP Exploration (Alaska), Inc. 10 0 -1 P.O. Box 196612 Anchorage, AK 99519 -6612 Re: Prudhoe Bay Field, Prudhoe Bay Oil Pool, PBU E -23B Sundry Number: 311 -119 Dear Mr. McMullen: APR 1 6 Z(.11 Enclosed is the approved Application for Sundry Approval relating to the above referenced well. Please note the conditions of approval set out in the enclosed form. 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 file with the Commission an application for reconsideration. A request for reconsideration 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. S • .-rely, r ' ! � eite Com ' iss' ► er DATED this *day of April, 2011. Encl. STATE OF ALASKA • RECEIVED E ALAS IL AND GAS CONSERVATION COMMISSION ;,APR 11 2A h APPLICATION FOR SUNDRY APPROVAL 20 AAC 25.280 Alaska Oil & fns Cno commission 1. Type of Request: , ❑ Abandon ® Plug for Redd!! ❑ Perforate New Pool ❑ Repair Well ❑ Change Approved Program ❑ Suspend ❑ Plug Perforations ❑ Perforate ❑ Pull Tubing ❑ Time Extension ❑ Operations Shutdown ❑ Re -Enter Suspended Well ❑ Stimulate ❑ Alter Casing ❑ Other 2. Operator Name: 4. Current Well Class: 5. Permit To Drill Number BP Exploration (Alaska) Inc. ® Development ❑ Exploratory 200 442 3. Address: ❑ Service ❑ Stratigraphic 6. API Number. P.O. Box 196612, Anchorage, Alaska 99519 6612 50- 029 - 21763 -02 -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 E -23B Spacing Exception Required? ❑ Yes ® No 9. Property Designation: 10. Field / Pool(s): ADL 028304 Prudhoe Bay Field / Prudhoe Bay Oil Pool 11 A , ; :- ,, PRESENTWELL CONDITION SUMMARY i, . Total Depth MD (ft): Total Depth TVD (ft): Effective Depth MD (ft): Effective Depth TVD (ft): Plugs (measured): Junk (measured): 12706' 8889' 12664' 8893' 11200' None Casing Length Size MD TVD Burst Collapse Structural Conductor 110' 20" 110' 110' Surface 2753' 13 -3/8" 2793' 2647' 4930 2670 Intermediate 8431' 9-5/8" 8467' 6606' 6870 4760 Production Liner 2733 7" 8316' - 11049' 6500' - 8848' 7240 5410 Liner 1768' 2 -3/8" 10930' - 12698' 8806' - 8890' Casing Patch 1422' 7 -5/8" 2983' - 4405' 2782' - 3723' 6890 4790 Perforation Depth MD (ft): Perforation Depth TVD (ft): Tubing Size: Tubing Grade: Tubing MD (ft): 11110' - 12662' 8866' - 8893' 4 -1/2 ", 12.6# & 3 -1/2 ", 9.2# 13Cr80 & L-80 10363' & 10915 -10966' Packers and SSSV Type: 7" x 4-1/2" Baker 'S -3' packer, Packers and SSSV 10264' / 8289' 7" x 3-1/2" Baker'FB -1' packer MD (ft) and TVD (ft): 10920' / 8801' 12. Attachments: 13. Well Class after proposed work: ® Description Summary of Proposal ❑ BOP Sketch ❑ Detailed Operations Program 0 Exploratory Development 0 Service 14. Estimated Date for 15. Well Status after proposed work: Commencing Operations: May 1, 2011 ❑ Oil ❑ WINJ ❑ WDSPL ❑ Plugged 16. Verbal Approval: Date: ❑ Gas ❑ GINJ ❑ GSTOR Abandoned � , y � Commission Representative: ❑ WAG ❑ SPLUG ® Suspended ¢N" 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. Contact Matt Ross, 564 -5782 Printed Name f .'` c n ey Title Engineering Team Leader Prepared By Name/Number Signet - /�� / 1 Phone 564 - 4711 Date (( f ( Terrie Hubble, 564 -4628 Commission Use Only Conditi • s of approval: Notify Commission so that a representative may witness 1' ' ,(� Sundry Number 1 `�' ❑ Plug Integrity ,BOP Test ❑ Mechanical Integrity Test ❑ Location Clearance 35.o6 o c. Bo 7es t Other. / �� / or Z S P $L Ail n 1.......L4 / +GS /— C - 4 /6e e rrt.a.a- PA Ace- "2/oracle, ' Z6 j��G 25.1/ d `n Subsequent Form Required: / APPROVED BY Approved By: COMMISSIONER TH CO MMISSION Date 41g — // Form 10-403 Rw� APR 15 11 I . ' t "' Submit In Duplicate - Al i ��� � t ��" -. ..41r L . . ._. • • To: Alaska Oil & Gas Conservation Commission From: Matthew Ross b PO CTD Engineer Date: April 4, 2011 Re: E -23B Sundry Approval Sundry approval is requested to plug the E -23B perforations as part of drilling the E -23C coiled tubing sidetrack. History of E -23B. E -23B is a 2000 horizontal CST in Zone IA and a RWO in July 2008 repaired TxIA communication. After the RWO, the well was brought online in July 2008 and ever since has high GOR. Reason for sidetrack. E -23B is currently SI for high GOR with no remaining wellwork options. The proposed sidetrack will access reserves in the north western portion of the Ivishak. Proposed plan for E -23C is to drill a thru- tubing sidetrack with a Coiled Tubing Drilling rig on or around May 10, 2011. The existing perforations will be isolated by a down squeeze cement job pre CTD operations. The following describes work planned and is submitted as an attachment to Form 10 -403. A schematic diagram of the proposed sidetrack is attached for reference. CTD Sidetrack Summary Pre -Rig Work: (scheduled to begin May 1, 2010). 1. F MIT IA & OA. 2. S Dummy WS drift to 10,950' MD. • 3. E Set 4- 1/2 "x7" WS at 10,850' MD. • 4. C Mill XN profile at 10,350' MD. - 5. C Down squeeze 6bbls of cement past whipstock. • 6. V PT MV, SV, WV. 7. D Bleed gas lift and production flowlines down to zero and blind flange. 8. 0 Remove wellhouse, level pad. 9. V Set TWC -24hr prior to rig arrival. , . e Rig Work: (scheduled to begin on May 10, 2011) PA 1. MIRU and test BOPE to 250 psi low and 3500 psi high. Pull TWC. , 2. Mill 3.8" window at 10,850' MD and 10' of rathole. 3. Drill Build: 4.125" OH, 30' (9° /100). 4. Drill Build: 4.125" OH, 700' (16° /100). p-� 5. Drill Lateral: 4.125" OH, 1973' (12 °/100). Ws r ' '� 6. Run 3- 1/2 "x3- 3/16 "x2 -7/8" solid cemented completion leaving TOL at 10,320' MD. 7. Pump primary cement leaving TOC at 10,650' MD, 34 bbls of 15.8 ppg liner cmt planned. 8. Cleanout run. 9. Run MCNL /GR/CCL log. 10. Perforate 1200ft. 11. Freeze protect well, set BPV and RDMO. Post -Rig Work: 1. Re- install wellhouse and FL's. 2. Apply furmanite wrap to well head. 3. Run generic GLV's. 4. ASRC flowback. • • Matthew Ross CTD Engineer 564 -4387 CC: Well File Sondra Stewman/Terrie Hubble TREE = MCEV OY 1 SAFETY: WELL ANGLE > 70° @ 11000'. L ACTUATOR = AXELSON SON CHROME E _2 3 B ETU TUBING*** NOT SHOWN * ** 4 -1/2" KB. ELEV = 68.05' BF. ELEV = 31.85' ' I KOP = 1597' Max Angle = 96° @ 12671' Datum MD = 11003' 1 2215' H4-1/2" HES X NP, ID = 3.813" 1 Datum TVD = 8800' SS 120" CONDUCTOR, ID = ? 1 ? 113 -3/8" CSG, 72#, L -80 BTRS, ID = 12.347" H 2972' � •� ♦� 1 2983' 1-19-5/8" X 7 -5/8" BKR LTP PKR, ID = 6.875" 1 IA I • 4 • •� GAS LIFT MANDRELS 0.4 ! ST MD TVD DEV TYPE VLV LATCH PORT DATE 7 -5/8" SCAB LNR, 29.7 #, L -80 STL, - 4405' 2 4071 3513 51 KBG-2 DMY RK 0 10/08/10 .0459 bpf, ID= 6.875" 1 7575 6011 45 KBG-2 DMY RK 0 10/08/10 1TOP OF 7" LNR H 8316' ® L 8316' H9-5/8" X 7" LTP w /HGR D= ?? I Minimum ID = 1.995" @ 10938' 1 9 -5/8" MILLOUT WINDOW (E -23A) 8467" - 8472' I TOP OF 2-3/8" LINER 1 10243' H4 -1/2" HES X NIP, ID = 3.813" I 19 -5/8" CSG, 47 #, L -80 BTRS, .0733 bpf, ®= 8.681" H 8467' 0 /�/ 10264' 1 X 4-1/2" BKR S -3 PKR, ID = 3.875" 1 10287' I - /2 "H$ X NP, ID = 3.813" 1 10350' 1-14 -1/2" HES XN NIP, O = 3.725" I 4 -1/2" TBG, 12.6 #, 13CR -80 VAM TOP, - 10363' .0152 bpf, ID = 3.958" 10363' 1 WLEG, ID = 3.958" 1 17" X 3 -1/2" ENTRY GUIDE, ID = 3.00" (01/15/08) 1-I 10915' I 10920' I X 4-1/2' BKR FB -1 PKR, ID = 4.00" 1 1 3-1/2" TBG STUBI -1 10916' I o e 10938' He X 3-1/2" XO, 10= 2.992" 1 1 TOP 2 -3/8" LNRI -1 10938' a 10938' 1 - 12 - 3/8" DEPLOY SLV, ID = 1.995" I 1 10942' H3-1/2" PKR SINS NIP, ID= 2.75" 1 13 -1/2" TBG, 9.2 #, L -80 NSCT, .0087 bpf, ID = 2.992" I - 1 10966' 1 1 1 10954' _I - 13 - 1/2" PKRSWN XN NIP, ID= 2.635" 1 B HIND 10966' H3-1/2" WLEG, ID = 2.992" 1 PERFORATION SUMMARY 1 10960' H ELMD TT LOGGED 01/19/94 1 REF LOG: SP -SUN MWD 10/28/93 ANGLE AT TOP PERF: 69° @ 11110' I Note: Refer to Production DB for historical perf data 7" MILLOUT WINDOW (E- 23B)11049' - 11053' I SIZE SFF INTERVAL Opn /Sqz DATE ■ 1- 11/16" 6 11110- 11120 0 05/11/10 �1 ■` 11111. �� 1 11200' 1 - 1 C�P(05 /1 /10)) 1- 11/16" 6 11150 -11170 0 05/10/10 111111. 1111111♦ 1-11/16" 6 11180 - 11190 0 05/11/10 111111111111111111114 111( 1 -9/16" 6 11260 - 11580 C 07/03/02 11111111 1- 9/16" 6 11620 - 11680 C 07/03/02 ••••••••••1•••4 PBTD 12664' I 1- 11/16" 4 12000 - 12075 C "12/12/00 1•1•1• `∎ 1- 11/16" 4 12170 - 12340 C 12/12/00 1-11/16" 4 12380 12488 C '12/12/00 dm... TD - 12706' 1 1- 11/16" 4 12568 - 12662 C 12/12/00 " -v _ 17" LNR, 26#, L -80, .0383 bpf, ID = 6.276" 1-1 11321' 1 12- 3/8" LNR, 4.6#, L -80 FL4S, .0039 bpf, ID = 1.995" 1-1 12708' 1 DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 12/09/87 AUDI 1 ORIGINAL COM PLETION 10/22/08 PJC DRLG DRAFT CORRECTIONS WELL: E-23B 11/08/93 D9 SIDETRACK (E -23A) 05/18/10 JKC/SV SET CIBP /ADD PEW (05/11/10) PERMIT No: '2001420 12/24/93 D14 7 -5/8" SCAB LNR (E -23A) 10/23/10 CJN/AGR GLV GO (10/08/10) API No: 50- 029 - 21763 -02 12/12/00 N-CDR1 CTD SIDETRACK (E -23B) SEC 6, T11N, R14E, 1820' FNL & 501' FEL 07/17/08 N4ES RWO 09/10/08 NID/JMD DRLG DRAFT CORRECTIONS BP Exploration (Alas ka) .. ` TREE= MCEVOY • SAES: WELL ANGLE> 70 @ 11000'. WELLHEAD= MCEVOY E i� 3 t ** *ORIGINAL WELLBORE NOT SHOWN ACTUATOR = AXELSON * ** 4-1/2" CHROME TUBING *** KB. ELEV = 68.05' Proposed CTD Sidetrack BF. ELEV = 31.85' I KOP= 1597' Max Angle = 96° © 12671' Datum MD = 11003' 1 2215' 1 -14 -1/2" HES X NIP, ID = 3.813" I Datum TVD = 8800' SS 120" CONDUCTOR, ID = ? 1 ? 2983' H 9 -5/8" X 7 - 5/8" BKR LTP PKR, ID = 6.875" I 113 -3/8" CSG, 72 #, L -80 BTRS, ID = 12.347" I-1 2972' i i i i • ►Q ► •j GAS LIFT MANDRELS 04 ! ST MD TVD DEV TYPE VLV LATCH PORT DATE 7 - 5/8" SCAB LNR, 29.7 #, L - 80 STL, — 4405' I 2 4071 3513 51 KBG -2 DMY RK 0 10/08/10 .0459 bpf, ID = 6.875" 1 7575 6011 45 KBG -2 DMY RK 0 10/08/10 'TOP OF 7" LNR H 8316' 1 8316' I X 7" LTPw /HGR, ID = ?? Minimum ID = ?? 9 -5/8" MILLOUT WINDOW (E-23A) 8467" - 8472' E -23 I 10243' I- -1/2" HES X NIP, ID= 3.813" 1 I9 - 5/8" CSG, 47 #, L - 80 BTRS, .0733 bpf, D= 8.681" H 8467' TSGR 10258' i 1 10264' H7" X 4-1/2" BKR S -3 PKR, ID = 3.875" I 1 10287' H 4 -1 /2 "HES X MP, ID = 3.813" I 18 0 I 10320' I—ITop of Proposed 3 -1/2" Liner I 4 TBG, 12.6#, -80 VAM TOP, —1 10363' I 10350' 1 -14 -1/2" HES XN NIP, D milled to = 3.80" 1 .0152 bpf, ID = 3.958" 10363' H4-1/2" WLEG, ID = 3.958" I BCGL 10600' 1 10650' (Hop of cement I PERFORATION SUMMARY REF LOG: SP-SUN MWD 10/28/93 10850' H4 /2" x 7" w hipstock I ANGLE AT TOP PERF: 69° @ 11110' Note: Refer to Production DB for historical perf data SIZE SPF INTERVAL Opn /Sqz DATE 57 1- 11/16" 6 11110- 11120 S 05/11/10 1-11/16" 6 11150 - 11170 S 05/10/10 11000' 3 - 3/16" X 2 - 7/8" XO 1- 11/16" 6 11180 - 11190 S 05/11 /10 ' 1- 9/16" 6 11260 - 11580 C 07/03/02 1- 9/16" 6 11620 - 11680 C 07/03/02 ._ ,, _ ,, , _ _ ,. _. „, „ ..N C 1 4 12000 12075 C r 12/12/00 I3 3/16" X 2 - 7/8" L - 80 Liner, Cemented & Perf'd 1-1 13573' I 1-11/16" 4 12170 - 12340 C r 12/12/00 1-11/16" 4 12380 - 12488 C P. 12/12/00 1-11/16" 4 12568 - 12662 C r 12/12/00 L , — 10920' I.1 7" X 4-1/2. BKR FB -1 PKR, ID = 4.00" I ) 1 10938' I X 3-1/2" XO, ID = 2.992" 1 13 TBG, 9.2 #, L - 80 NSCT, .0087 bpf, ID = 2.992" HI 10966' 1 • • 1 10938' H2_3/8" DEPLOY SLV, ID = 1.995" 7" MILLOUT WINDOW (E- 23B)11049' - 11053' 11200' ,-J CIBP (05/10/10) 1 •••••••••� »� t l 4 • ■••••••• B 17" LNR, 26#, L -80, .0383 bpf, ID = 6.276" 1-1 11321' A 12- 3/8" LNR, 4.6#, L -80 FL4S, .0039 bpf, ID= 1.995" 1-1 12708' DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 12/09/87 AUDI 1 ORIGINAL COMPLETION 10/22/08 PJC DRLG DRAFT CORRECTIONS WELL: E-23C 11/08/93 D9 SIDETRACK (E -23A) 05/18/10 JKGSV SET CIBP /ADD PERF (05/11/10) PERMIT No: 12/24/93 D14 7 -5/8" SCAB LNR (E -23A) 10/23/10 CJN/AGR GLV C/O (10/08/10) API No: 50- 029 - 21763 -03 12/12/00 N-CDR1 CTD SIDETRACK (E -23B) 11/18/10 MSE PROPOSED CTD SIDETRACK SEC 6, T11 N, R14E, 1820' FNL & 501' FEL 07/17/08 N4ES RWO 09/10/08 MD/JMD DRLG DRAFT CORRECTIONS BP Exploration (Alaska) NORDIC - CALISTA RIG 1 CHOKE / REEL /CIRCULATION MANIFOLD DIAGRAM V12 •11 'illli iiiLL V14 ._. -_. - 7 -1118" 5000 psi BOP's ID = 7.05" V75 - V11 , IV Mr 5000 Pit, 1X45 '.:I Transducers a ®! t .00R 60'` ` =EOASS # 1 V2 III V1 - V 16 _ - keae typlsil SOp - - z _. _. _._ _ _ ___. ::: tht V17 IC , , , '; 4---- IK OK z. ,... To Poor Boy Gas Buster I X00"5009 psi HOP .I 21nr 0000 WI, IOid1 VS I I II I Jill "'1 •1— 24nr 5000pi etleaK' - -- - Manual Choke _� L • Aga .. 171a15Chamr 05040Oate I t VaNassWOPa t a1 I ft MEOH /Diesel , , • , 4— ___- .. _. _- _.... -. -- P Line CoFlox Hose 0 :4 , 1 1 �iodon - 114 ium Nalco 10WOG To Production Tree or Cross Over • 4 • s e transducers �' CoFlex Hose I0/11 0 0 1 _a I ._... ■ To Coiled Tubing 3 1 ' I Bleed OM Inner Reel Valve e IN ..i i i 3 ,i l Cement Line In Ground Level Tie-in i CV10 __. �s ' CVO CV2 TStand Pipe ==. - - _ - - - - - z. Manual Choke ,,. .__ _ _ __ Pressure Transducers 0119 /P ff __ E ? � CV17 0 _ -. . 7e. CV1 ` r .-- - All • IN5 mom Tiger Tank Mud PumP2 i��i __ _ _ � ✓ + In From - ` = Baker MP 1 6 MP 2 ® -i Choke r - •_ — - CViI `-- b Pits i t N Rig Floor ' Mud Pump 51 , V76 Revere Cr Cir CT while 00 JIZ III 1111 r • - • To Mangold ..�. ,,.. ...,,w.»,a» -..... CV15 1-Jun -2010 .. ,., . .,. -.. Cones Hose gyro/data Gyrodata Incorporated 1682 W. Sam Houston Pkwy. N. Houston, Texas 77043 713/461 -3146 Fax: 713/461 -0920 January 3, 2011 State of Alaska - AOGCC Attn: Christine Mahnken 333 W. 7th Ave, Suite 100 30 f- . 9430 Anchorage, Alaska 99501 Re: E -Pad, Well #E -23B Prudhoe Bay, Alaska Enclosed, please find two (2) copies, and one (1) disk of the completed survey for the above referenced well. We would like to take this opportunity to thank you for using Gyrodata, and we look forward to serving you in the future. Sincerely, R5,4 Rob Shoup North American Regional Manager RS:kI Serving the Worldwide Energy Industry with Precision Survey Instrumentation • gyroldata, Gyrodata Incorporated 1682 W. Sam Houston Pkwy. N. Houston, Texas 77043 713/461 -3146 Fax: 713/461 -0920 SURVEY REPORT BP Exploration E -Pad #E -23B Schlumberger Truck #2320 Prudhoe Bay, AK AK1210GCM224 29 Dec 2010 ` Serving the Worldwide Energy Industry with Precision Survey Instrumentation A Gyrodata Directional Survey for BP ALASKA Location: SCHLUMBERGER TRUCK 2320, N. SLOPE BOROUGH,AK., Lease: PRUDHOE BAY,AK Well: E PAD WELL E -23B, 4 -1/2" TUBING • Job Number: AK1210GCM224 Azimuth Correction: Gyro: Bearings are Relative to True North Run Date: 12/29/2010 12:44:34 PM Surveyor: Henry Drew Vertical Section Calculated from Well Head Location Calculation Method: MINIMUM CURVATURE Closure Calculated from Well Head Location Survey Latitude: 70.338667 deg. N Longitude: 148.665242 deg. W Horizontal Coordinates Calculated from Local Horizontal Reference A Gyrodata Directional Survey BP ALASKA Location: SCHLUMBERGER TRUCK 2320, N. SLOPE BOROUGH,AK. Lease: PRUDHOE BAY,AK Well: E PAD WELL E -23B, 4 -1/2" TUBING Job Number: AK1210GCM224 MEASURED I N C L AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg. deg. deg./ feet feet deg. feet 100 ft. 0.00 0.00 0.00 0.00 0.00 0,0 0.0 0.00 N 0.00 E • 0 - 10,900 ft. RATE GYROSCOPIC CONTINUOUS MULTISHOT SURVEY RUN INSIDE 4 -1/2" TUBING ALL MEASURED DEPTHS AND COORDINATES REFERENCED TO ORIGINAL RKB AT 68.05 FEET AMSL ORIGINAL RKB ELEV= 68.05' BASE FLANGE ELEV= 31.85' (BF- OKB= 36.20' ) MEASURED BF- SWAB= 9.5' SWAB- GYRO= 10' (36.20'- 19.50' = ZERO ON SWAB @ 16.7' 100.00 0.27 172.57 0.27 100.00 0.2 172.6 0.23 S 0.03 E 200.00 0.30 170.57 0.03 200.00 0.7 171.9 0.73 S 0.10 E 300.00 0.30 172.61 0.01 300.00 1.3 171.7 1.24 S 0.18 E 400.00 0.34 157.75 0.09 400.00 1.8 169.6 1.78 S 0.33 E 500.00 0.39 146.79 0.09 499.99 2.4 165.0 2.34 S 0.63 E 600.00 0.62 123.12 0.31 599.99 3.2 156.6 2.92 S 1.26 E 700.00 2.55 94.53 2.03 699.95 5.2 130.7 3.39 S 3.94 E 800.00 2.61 97.40 0.14 799.85 9.3 114.6 3.86 S 8.41 E 900.00 2.60 105.01 0.35 899.74 13.7 110.2 4.74 S 12.86 E 1000.00 2.74 108.03 0.20 999.63 18.4 109.3 6.07 S 17.32 E III 1100.00 2.61 120.90 0.61 1099.53 23.0 110.3 7.97 S 21.55 E 1200.00 3.08 130.59 0.67 1199.40 27.8 113.1 10.89 S 25.54 E 1300.00 4.93 157.20 2.58 1299.16 33.6 119.6 16.60 S 29.25 E 1400.00 5.62 162.96 0.87 1398.74 41.0 128.0 25.24 S 32.35 E 1500.00 7.49 163.82 1.87 1498.08 50.8 135.5 36.19 S 35.60 E 1575.00 10.67 166.39 4.27 1572.13 61.3 141.0 47.63 S 38.60 E A Gyrodata Directional Survey BP ALASKA Location: SCHLUMBERGER TRUCK 2320, N. SLOPE BOROUGH,AK. Lease: PRUDHOE BAY,AK Well: E PAD WELL E -23B, 4 -1/2" TUBING Job Number: AK1210GCM224 MEASURED I N C L AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg. deg. deg./ feet feet deg. feet 100 ft. 1600.00 11.42 167.78 3.18 1596.67 65.6 142.8 52.30 S 39.67 E 1625.00 12.03 169.30 2.73 1621.15 70.3 144.6 57.28 S 40.67 E 1650.00 12.84 169.97 3.29 1645.56 75.2 146.4 62.58 S 41.64 E 1675.00 13.29 169.96 1.80 1669.91 80.4 148.0 68.14 S 42.63 E 1700.00 13.72 170.97 1.96 1694.22 85.8 149.5 73.90 S 43.59 E 1725.00 14.58 170.96 3.44 1718.46 91.5 150.9 79.93 S 44.55 E 1750.00 15.18 170.45 2.46 1742.63 97.6 152.1 86.27 S 45.59 E 1775.00 15.99 169.71 3.34 1766.71 104.0 153.3 92.89 S 46.75 E 1800.00 16.94 168.95 3.90 1790.68 110.8 154.3 99.85 S 48.06 E 1825.00 17.91 168.89 3.88 1814.53 118.1 155.2 107.19 S 49.50 E 1850.00 18.83 169.00 3.68 1838.26 125.7 156.1 114.93 S 51.01 E 1875.00 19.24 169.28 1.68 1861.89 133.7 156.9 122.93 S 52.55 E 1900.00 19.78 170.19 2.48 1885.46 141.8 157.6 131.15 S 54.03 E 1925.00 20.08 170.37 1.22 1908.96 150.2 158.3 139.55 S 55.47 E 1950.00 20.47 171.25 1.98 1932.41 158.6 159.0 148.10 S 56.86 E 1975.00 20.90 171.93 1.97 1955.80 167.3 159.7 156.84 S 58.15 E 2000.00 21.43 172.34 2.20 1979.11 176.1 160.3 165.78 S 59.38 E 2025.00 22.16 172.75 2.98 2002.32 185.2 160.9 174.98 S 60.58 E 2050.00 22.91 173.09 3.04 2025.42 194.6 161.5 184.49 S 61.77 E 2075.00 23.72 173.44 3.29 2048.37 204.3 162.1 194.32 S 62.93 E 2100.00 24.82 173.70 4.42 2071.16 214.3 162.6 204.53 S 64.08 E 2125.00 25.65 174.01 3.36 2093.78 224.8 163.1 215.12 S 65.22 E A Gyrodata Directional Survey BP ALASKA Location: SCHLUMBERGER TRUCK 2320, N. SLOPE BOROUGH,AK. Lease: PRUDHOE BAY,AK Well: E PAD WELL E -23B, 4 -1/2" TUBING Job Number: AK1210GCM224 MEASURED I N C L AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg. deg. deg./ feet feet deg. feet 100 ft. 2150.00 26.45 174.00 3. 20 2116.24 235.6 163.6 226.04 S 66.36 E • 2175.00 26.91 174.36 1.95 2138.58 246.6 164.1 237.21 S 67.50 E 2200.00 27.55 174.55 2.58 2160.81 257.9 164.6 248.60 S 68.61 E 2225.00 27.95 174.96 1.77 2182.93 269.4 165.0 260.19 S 69.67 E 2250.00 28.43 175.59 2.26 2204.97 281.0 165.4 271.96 S 70.64 E 2275.00 28.70 175.49 1.10 2226.92 292.8 165.8 283.88 S 71.57 E 2300.00 29.19 175.84 2.07 2248.80 304.7 166.2 295.94 S 72.49 E 2325.00 29.49 176.04 1.26 2270.59 316.8 166.6 308.16 S 73.35 E 2350.00 30.09 175.98 2.40 2292.29 329.0 167.0 320.55 S 74.22 E 2375.00 30.87 175.74 3.16 2313.83 341.6 167.3 333.20 S 75.13 E 2400.00 31.23 175.66 1.45 2335.25 354.3 167.6 346.06 S 76.10 E 2425.00 32.15 175.57 3.68 2356.52 367.3 167.9 359.15 S 77.10 E 2450.00 32.83 175.64 2.72 2377.61 380.6 168.2 372.54 S 78.13 E 2475.00 33.74 175.74 3.65 2398.51 394.2 168.4 386.22 S 79.16 E 2500.00 34.81 175.94 4.30 2419.17 408.2 168.7 400.26 S 80.18 E • 2525.00 35.57 176.04 3.05 2439.60 422.5 168.9 414.63 S 81.19 E 2550.00 36.63 176.39 4.32 2459.80 437.1 169.2 429.33 S 82.16 E 2575.00 37.32 176.64 2.82 2479.77 452.0 169.4 444.34 S 83.08 E 2600.00 38.11 177.01 3.29 2499.55 467.2 169.7 459.61 S 83.92 E 2625.00 38.78 177.38 2.83 2519.13 482.6 169.9 475.14 S 84.68 E 2650.00 39.22 177.62 1.86 2538.56 498.2 170.1 490.85 S 85.37 E L A Gyrodata Directional Survey BP ALASKA Location: SCHLUMBERGER TRUCK 2320, N. SLOPE BOROUGH,AK. Lease: PRUDHOE BAY,AK Well: E PAD WELL E -23B, 4 -1/2" TUBING Job Number: AK1210GCM224 MEASURED I N C L AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg. deg. deg./ feet feet deg. feet 100 ft. 2675.00 39.84 177.92 2.59 2557.84 514.0 170.4 506.75 S 85.99 E • 2700.00 40.33 178.16 2.06 2576.96 530.0 170.6 522.84 S 86.54 E 2725.00 41.02 178.47 2.88 2595.93 546.1 170.8 539.13 S 87.02 E 2750.00 41.70 178.79 2.85 2614.69 562.5 171.1 555.64 S 87.41 E 2775.00 41.95 178.85 1.01 2633.32 579.0 171.3 572.31 S 87.76 E 2800.00 42.19 178.90 0.97 2651.88 595.6 171.5 589.06 S 88.09 E 2825.00 42.46 178.96 1.09 2670.36 612.3 171.7 605.89 S 88.40 E 2850.00 43.32 178.98 3.44 2688.68 629.2 171.9 622.90 S 88.71 E 2875.00 44.33 178.82 4.06 2706.71 646.4 172.1 640.21 S 89.04 E 2900.00 45.27 178.36 3.98 2724.45 663.9 172.3 657.82 S 89.47 E 2925.00 45.98 177.44 3.87 2741.94 681.7 172.4 675.68 S 90.13 E 2950.00 46.29 176.87 2.06 2759.26 699.6 172.5 693.68 S 91.02 E 2975.00 46.62 176.43 1.84 2776.48 717.7 172.6 711.77 S 92.08 E 3000.00 47.01 175.57 2.95 2793.59 735.9 172.7 729.95 S 93.35 E 3025.00 47.28 175.35 1.26 2810.60 754.2 172.8 748.22 S 94.80 E 3050.00 47.48 175.15 0.99 2827.52 772.6 172.8 766.56 S 96.33 E • 3075.00 47.68 175.02 0.89 2844.39 791.0 172.9 784.94 S 97.91 E 3100.00 47.86 174.89 0.82 2861.19 809.5 172.9 803.38 S 99.54 E 3125.00 47.98 174.76 0.62 2877.95 828.1 173.0 821.86 S 101.21 E 3150.00 47.72 174.30 1.72 2894.72 846.6 173.0 840.31 S 102.98 E 3175.00 45.72 172.63 9.36 2911.86 864.8 173.0 858.39 S 105.04 E 3200.00 44.42 171.16 6.66 2929.52 882.5 173.0 875.91 S 107.54 E ,.. r A Gyrodata Directional Survey BP ALASKA Location: SCHLUMBERGER TRUCK 2320, N. SLOPE BOROUGH,AK. Lease: PRUDHOE BAY,AK Well: E PAD WELL E -23B, 4 -1/2" TUBING Job Number: AK1210GCM224 MEASURED I N C L AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg. deg. deg./ feet feet deg. feet 100 ft. 3225.00 43.99 170.00 3.66 2947.44 899.9 173.0 893.11 S 110.39 E 3250.00 44.16 169.04 2.76 2965.40 917.3 172.9 910.21 S 113.55 E II 3275.00 44.94 167.65 4.99 2983.22 934.7 172.8 927.38 S 117.10 E 3300.00 46.13 165.87 6.96 3000.73 952.5 172.7 944.75 S 121.19 E 3325.00 46.69 165.12 3.12 3017.97 970.5 172.6 962.28 S 125.72 E 3350.00 46.95 164.85 1.30 3035.07 988.5 172.4 979.89 S 130.44 E 3375.00 47.09 164.74 0.65 3052.12 1006.7 172.3 997.54 S 135.24 E 3400.00 47.09 164.64 0.29 3069.14 1024.8 172.1 1015.20 S 140.08 E 3425.00 47.21 164.64 0.48 3086.14 1043.0 172.0 1032.87 S 144.93 E 3450.00 47.39 164.59 0.73 3103.09 1061.2 171.9 1050.59 S 149.81 E 3475.00 47.59 164.59 0.80 3119.99 1079.5 171.8 1068.35 S 154.70 E 3500.00 47.94 164.60 1.40 3136.79 1097.9 171.6 1086.20 S 159.62 E 3525.00 48.22 164.61 1.12 3153.49 1116.3 171.5 1104.13 S 164.56 E 3550.00 48.46 164.62 0.96 3170.11 1134.9 171.4 1122.14 S 169.51 E 3575.00 48.69 164.63 0.92 3186.65 1153.5 171.3 1140.21 S 174.48 E • 3600.00 48.91 164.63 0.88 3203.12 1172.2 171.2 1158.35 S 179.47 E 3625.00 49.12 164.64 0.84 3219.52 1190.9 171.1 1176.55 S 184.47 E 3650.00 49.34 164.59 0.89 3235.84 1209.7 171.0 1194.80 S 189.49 E 3675.00 49.55 164.62 0.84 3252.10 1228.6 170.9 1213.12 S 194.53 E 3700.00 49.51 164.55 0.27 3268.32 1247.5 170.8 1231.45 S 199.59 E 3725.00 49.45 164.54 0.24 3284.56 1266.4 170.7 1249.77 S 204.65 E 3750.00 49.62 164.52 0.68 3300.79 1285.3 170.6 1268.10 S 209.73 E A Gyrodata Directional Survey BP ALASKA Location: SCHLUMBERGER TRUCK 2320, N. SLOPE BOROUGH,AK. Lease: PRUDHOE BAY,AK Well: E PAD WELL E -23B, 4 -1/2" TUBING Job Number: AK1210GCM224 MEASURED I N C L AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg. deg. deg./ feet feet deg. feet 100 ft. 3775.00 49.85 164.52 0.92 3316.95 1304.3 170.5 1286.48 S 214.82 E • 3800.00 50.09 164.49 0.96 3333.03 1323.3 170.4 1304.93 S 219.93 E 3825.00 50.33 164.48 0.96 3349.03 1342.4 170.3 1323.44 S 225.07 E 3850.00 50.53 164.49 0.80 3364.95 1361.6 170.3 1342.01 S 230.23 E 3875.00 50.75 164.51 0.88 3380.81 1380.8 170.2 1360.64 S 235.39 E 3900.00 50.96 164.49 0.84 3396.59 1400.1 170.1 1379.32 S 240.57 E 3925.00 51.04 164.50 0.32 3412.32 1419.5 170.0 1398.04 S 245.77 E 3950.00 51.11 164.50 0.28 3428.03 1438.8 170.0 1416.78 S 250.96 E 3975.00 51.14 164.51 0.12 3443.72 1458.2 169.9 1435.54 S 256.16 E 4000.00 51.32 164.50 0.72 3459.38 1477.6 169.8 1454.32 S 261.37 E 4025.00 51.51 164.51 0.76 3474.97 1497.1 169.7 1473.15 S 266.59 E 4050.00 51.50 164.46 0.16 3490.53 1516.6 169.7 1492.01 S 271.83 E 4075.00 51.71 164.45 0.84 3506.06 1536.1 169.6 1510.88 S 277.08 E 4100.00 51.62 164.30 0.59 3521.56 1555.6 169.5 1529.77 S 282.36 E 4125.00 51.78 164.31 0.64 3537.06 1575.1 169.5 1548.66 S 287.67 E 4150.00 52.02 164.29 0.96 3552.48 1594.7 169.4 1567.60 S 292.99 E 4175.00 51.80 164.27 0.88 3567.90 1614.3 169.4 1586.54 S 298.32 E 4200.00 50.94 164.15 3.46 3583.51 1633.8 169.3 1605.33 S 303.64 E 4225.00 50.10 164.08 3.37 3599.41 1653.0 169.2 1623.89 S 308.92 E 4250.00 48.82 164.18 5.13 3615.66 1671.9 169.2 1642.16 S 314.11 E 4275.00 46.80 164.71 8.23 3632.44 1690.4 169.1 1660.01 S 319.08 E I A Gyrodata Directional Survey BP ALASKA Location: SCHLUMBERGER TRUCK 2320, N. SLOPE BOROUGH,AK. Lease: PRUDHOE BAY,AK Well: E PAD WELL E -23B, 4 -1/2" TUBING Job Number: AK1210GCM224 MEASURED I N C L AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg. deg. deg./ feet feet deg. feet 100 ft. 4300.00 45.78 165.36 4.49 3649.72 1708.4 169.1 1677.46 S 323.75 E • 4325.00 45.65 165.66 1.00 3667.18 1726.3 169.0 1694.79 S 328.23 E 4350.00 45.82 165.71 0.69 3684.62 1744.2 169.0 1712.14 S 332.65 E 4375.00 45.84 165.73 0.10 3702.04 1762.1 169.0 1729.52 S 337.07 E 4400.00 45.91 165.76 0.29 3719.45 1780.0 168.9 1746.91 S 341.49 E 4425.00 45.74 165.81 0.69 3736.87 1797.9 168.9 1764.29 S 345.90 E 4450.00 45.82 165.82 0.32 3754.31 1815.8 168.9 1781.66 S 350.29 E 4475.00 45.94 165.81 0.48 3771.71 1833.7 168.8 1799.06 S 354.69 E 4500.00 45.67 165.77 1.09 3789.14 1851.6 168.8 1816.44 S 359.09 E 4525.00 45.55 165.82 0.50 3806.63 1869.4 168.8 1833.76 S 363.47 E 4550.00 45.13 165.87 1.69 3824.20 1887.2 168.8 1851.00 S 367.82 E 4575.00 44.95 165.92 0.73 3841.86 1904.9 168.7 1868.15 S 372.13 E 4600.00 44.55 165.93 1.60 3859.62 1922.4 168.7 1885.23 S 376.41 E 4625.00 44.49 165.98 0.28 3877.44 1939.9 168.7 1902.23 S 380.66 E 4650.00 44.40 166.02 0.38 3895.29 1957.4 168.7 1919.22 S 384.90 E 4675.00 44.32 166.02 0.32 3913.17 1974.9 168.6 1936.18 S 389.12 E • 4700.00 44.22 166.01 0.40 3931.07 1992.3 168.6 1953.11 S 393.34 E 4725.00 44.20 166.04 0.12 3948.99 2009.7 168.6 1970.03 S 397.55 E 4750.00 44.21 165.99 0.15 3966.91 2027.2 168.6 1986.94 S 401.76 E 4775.00 44.21 165.99 0.00 3984.83 2044.6 168.5 2003.86 S 405.98 E 4800.00 44.08 165.97 0.52 4002.77 2062.0 168.5 2020.75 S 410.20 E 4825.00 43.95 165.99 0.52 4020.75 2079.3 168.5 2037.60 S 414.41 E A Gyrodata Directional Survey BP ALASKA Location: SCHLUMBERGER TRUCK 2320, N. SLOPE BOROUGH,AK. Lease: PRUDHOE BAY,AK Well: E PAD WELL E -23B, 4 -1/2" TUBING Job Number: AK1210GCM224 MEASURED I N C L AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg. deg. deg./ feet feet deg. feet 100 ft. 4850.00 44.02 166.02 0.29 4038.74 2096.7 168.5 2054.45 S 418.61 E • 4875.00 43.69 166.01 1.32 4056.76 2114.0 168.5 2071.26 S 422.79 E 4900.00 43.52 166.05 0.69 4074.87 2131.2 168.4 2087.99 S 426.95 E 4925.00 43.65 166.08 0.53 4092.97 2148.4 168.4 2104.72 S 431.11 E 4950.00 43.77 166.09 0.48 4111.05 2165.7 168.4 2121.49 S 435.26 E 4975.00 43.88 166.10 0.44 4129.08 2183.0 168.4 2138.29 S 439.42 E 5000.00 43.78 166.14 0.42 4147.12 2200.3 168.4 2155.10 S 443.57 E 5025.00 43.60 166.14 0.72 4165.19 2217.5 168.4 2171.86 S 447.71 E 5050.00 43.55 166.17 0.22 4183.31 2234.7 168.3 2188.60 S 451.83 E 5075.00 43.49 166.13 0.26 4201.43 2252.0 168.3 2205.31 S 455.95 E 5100.00 43.52 166.18 0.18 4219.57 2269.1 168.3 2222.02 S 460.07 E 5125.00 43.35 166.21 0.68 4237.72 2286.3 168.3 2238.71 S 464.17 E 5150.00 43.28 166.26 0.31 4255.91 2303.5 168.3 2255.37 S 468.25 E 5175.00 43.41 166.24 0.52 4274.09 2320.6 168.3 2272.04 S 472.33 E 5200.00 43.41 166.27 0.08 4292.25 2337.8 168.2 2288.73 S 476.42 E 5225.00 43.57 166.30 0.65 4310.39 2355.0 168.2 2305.44 S 480.49 E • 5250.00 43.58 166.30 0.04 4328.50 2372.2 168.2 2322.18 S 484.58 E 5275.00 43.53 166.34 0.23 4346.62 2389.4 168.2 2338.92 S 488.65 E 5300.00 43.37 166.36 0.64 4364.77 2406.6 168.2 2355.63 S 492.71 E 5325.00 43.39 166.36 0.08 4382.94 2423.8 168.2 2372.32 S 496.76 E 5350.00 43.43 166.39 0.18 4401.10 2440.9 168.2 2389.01 S 500.80 E 5375.00 43.19 166.47 0.98 4419.29 2458.1 168.1 2405.68 S 504.83 E A Gyrodata Directional Survey BP ALASKA Location: SCHLUMBERGER TRUCK 2320, N. SLOPE BOROUGH,AK. Lease: PRUDHOE BAY,AK Well: E PAD WELL E -23B, 4 -1/2" TUBING Job Number: AK1210GCM224 MEASURED I N C L AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg. deg. deg./ feet feet deg. feet 100 ft. 5400.00 43.29 166.44 0.41 4437.50 2475.2 168.1 2422.33 S 508.84 E • 5425.00 43.40 166.47 0.45 4455.69 2492.4 168.1 2439.01 S 512.86 E 5450.00 43.41 166.50 0.09 4473.85 2509.5 168.1 2455.72 S 516.87 E 5475.00 43.42 166.49 0.05 4492.01 2526.7 168.1 2472.42 S 520.88 E 5500.00 43.13 166.48 1.16 4510.21 2543.8 168.1 2489.09 S 524.89 E 5525.00 43.09 166.53 0.21 4528.46 2560.9 168.1 2505.70 S 528.88 E 5550.00 43.15 166.58 0.28 4546.71 2578.0 168.1 2522.32 S 532.85 E 5575.00 43.05 166.59 0.40 4564.96 2595.1 168.1 2538.94 S 536.81 E 5600.00 43.02 166.57 0.13 4583.24 2612.1 168.1 2555.53 S 540.77 E 5625.00 43.04 166.52 0.16 4601.51 2629.2 168.0 2572.12 S 544.74 E 5650.00 43.24 166.45 0.82 4619.75 2646.3 168.0 2588.74 S 548.74 E 5675.00 43.24 166.47 0.05 4637.97 2663.4 168.0 2605.39 S 552.75 E 5700.00 43.37 166.44 0.53 4656.16 2680.5 168.0 2622.06 S 556.76 E 5725.00 43.45 166.45 0.32 4674.32 2697.7 168.0 2638.77 S 560.79 E 5750.00 43.50 166.47 0.21 4692.46 2714.9 168.0 2655.49 S 564.82 E • 5775.00 43.64 166.45 0.56 4710.58 2732.1 168.0 2672.24 S 568.85 E 5800.00 43.44 166.52 0.82 4728.70 2749.3 168.0 2688.99 S 572.88 E 5825.00 43.56 166.57 0.50 4746.83 2766.5 168.0 2705.72 S 576.88 E 5850.00 43.63 166.66 0.37 4764.94 2783.8 168.0 2722.49 S 580.87 E 5875.00 43.58 166.84 0.54 4783.04 2801.0 167.9 2739.28 S 584.82 E 5900.00 43.78 166.87 0.80 4801.12 2818.3 167.9 2756.09 S 588.75 E A Gyroclata Directional Survey BP ALASKA Location: SCHLUMBERGER TRUCK 2320, N. SLOPE BOROUGH,AK. Lease: PRUDHOE BAY,AK Well: E PAD WELL E -23B, 4 -1/2" TUBING Job Number: AK1210GCM224 MEASURED I N C L AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg. deg. deg./ feet feet deg. feet 100 ft. 5925.00 43.84 166.92 0.28 4819.16 2835.6 167.9 2772.95 S 592.67 E • 5950.00 43.78 167.01 0.35 4837.20 2852.9 167.9 2789.81 S 596.58 E 5975.00 43.89 166.99 0.44 4855.24 2870.2 167.9 2806.68 S 600.47 E 6000.00 44.07 166.96 0.72 4873.23 2887.5 167.9 2823.59 S 604.38 E 6025.00 44.11 166.89 0.25 4891.18 2904.9 167.9 2840.53 S 608.32 E 6050.00 44.13 166.90 0.08 4909.13 2922.3 167.9 2857.49 S 612.27 E 6075.00 44.14 166.91 0.05 4927.07 2939.7 167.9 2874.44 S 616.21 E 6100.00 44.18 167.10 0.55 4945.01 2957.2 167.9 2891.41 S 620.13 E 6125.00 44.29 167.24 0.59 4962.92 2974.6 167.9 2908.42 S 624.00 E 6150.00 44.45 167.36 0.72 4980.79 2992.1 167.9 2925.47 S 627.84 E 6175.00 44.50 167.49 0.42 4998.63 3009.6 167.9 2942.57 S 631.66 E 6200.00 44.55 167.58 0.32 5016.45 3027.1 167.9 2959.68 S 635.44 E 6225.00 44.58 167.62 0.16 5034.26 3044.7 167.9 2976.82 S 639.21 E 6250.00 44.39 167.60 0.76 5052.10 3062.2 167.9 2993.93 S 642.96 E 6275.00 44.47 167.56 0.34 5069.95 3079.7 167.9 3011.02 S 646.73 E 6300.00 44.33 167.55 0.56 5087.81 3097.2 167.9 3028.10 S 650.50 E 6 6325.00 44.47 167.53 0.56 5105.68 3114.7 167.9 3045.18 S 654.27 E 6350.00 44.50 167.53 0.12 5123.51 3132.2 167.9 3062.28 S 658.06 E 6375.00 44.27 167.50 0.92 5141.38 3149.7 167.9 3079.36 S 661.84 E 6400.00 44.18 167.49 0.36 5159.29 3167.1 167.9 3096.38 S 665.61 E 6425.00 44.10 167.50 0.32 5177.23 3184.5 167.9 3113.38 S 669.38 E 6450.00 44.29 167.53 0.76 5195.16 3202.0 167.9 3130.39 S 673.15 E A Gyrodata Directional Survey BP ALASKA Location: SCHLUMBERGER TRUCK 2320, N. SLOPE BOROUGH,AK. Lease: PRUDHOE BAY,AK Well: E PAD WELL E -23B, 4 -1/2" TUBING Job Number: AK1210GCM224 MEASURED I N C L AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg. deg. deg./ feet feet deg. feet 100 ft. 6475.00 44.30 167.47 0.17 5213.05 3219.4 167.9 3147.44 S 676.93 E • 6500.00 44.25 167.51 0.23 5230.95 3236.9 167.9 3164.48 S 680.71 E 6525.00 44.26 167.44 0.20 5248.86 3254.3 167.9 3181.51 S 684.49 E 6550.00 44.39 167.48 0.53 5266.74 3271.8 167.9 3198.56 S 688.28 E 6575.00 44.38 167.60 0.34 5284.61 3289.3 167.9 3215.63 S 692.06 E 6600.00 44.45 167.59 0.28 5302.47 3306.8 167.9 3232.72 S 695.82 E 6625.00 44.49 167.62 0.18 5320.31 3324.3 167.9 3249.83 S 699.57 E 6650.00 44.54 167.59 0.22 5338.13 3341.8 167.9 3266.95 S 703.34 E 6675.00 44.60 167.59 0.24 5355.94 3359.3 167.8 3284.08 S 707.11 E 6700.00 44.73 167.65 0.55 5373.72 3376.9 167.8 3301.24 S 710.87 E 6725.00 44.75 167.64 0.08 5391.48 3394.5 167.8 3318.43 S 714.64 E 6750.00 44.86 167.66 0.44 5409.22 3412.1 167.8 3335.64 S 718.41 E 6775.00 44.86 167.68 0.06 5426.94 3429.8 167.8 3352.87 S 722.17 E 6800.00 44.84 167.70 0.10 5444.66 3447.4 167.8 3370.10 S 725.93 E 6825.00 44.97 167.67 0.53 5462.37 3465.0 167.8 3387.34 S 729.70 E • 6850.00 44.95 167.67 0.08 5480.06 3482.7 167.8 3404.60 S 733.47 E 6875.00 45.00 167.65 0.21 5497.75 3500.4 167.8 3421.86 S 737.25 E 6900.00 45.27 167.67 1.08 5515.38 3518.1 167.8 3439.17 S 741.03 E 6925.00 45.05 167.61 0.90 5533.01 3535.8 167.8 3456.49 S 744.83 E 6950.00 45.13 167.59 0.32 5550.66 3553.5 167.8 3473.78 S 748.63 E 6975.00 45.23 167.55 0.42 5568.28 3571.3 167.8 3491.10 S 752.45 E 7000.00 45.42 167.51 0.77 5585.86 3589.0 167.8 3508.45 S 756.28 E A Gyrodata Directional Survey BP ALASKA Location: SCHLUMBERGER TRUCK 2320, N. SLOPE BOROUGH,AK. Lease: PRUDHOE BAY,AK Well: E PAD WELL E -23B, 4 -1/2" TUBING Job Number: AK1210GCM224 MEASURED I N C L AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg. deg. deg./ feet feet deg. feet 100 ft. 7025.00 45.70 167.58 1.14 5603.36 3606.9 167.8 3525.88 S 760.13 E • 7050.00 45.71 167.59 0.05 5620.82 3624.8 167.8 3543.36 S 763.98 E 7075.00 45.89 167.56 0.73 5638.25 3642.7 167.8 3560.86 S 767.84 E 7100.00 45.80 167.52 0.38 5655.67 3660.6 167.8 3578.38 S 771.71 E 7125.00 45.85 167.50 0.21 5673.09 3678.6 167.8 3595.88 S 775.59 E 7150.00 46.00 167.51 0.60 5690.48 3696.5 167.8 3613.42 S 779.47 E 7175.00 45.84 167.55 0.65 5707.87 3714.5 167.8 3630.95 S 783.35 E 7200.00 46.09 167.53 1.00 5725.25 3732.5 167.8 3648.50 S 787.23 E 7225.00 46.27 167.51 0.72 5742.56 3750.5 167.8 3666.11 S 791.12 E 7250.00 46.29 167.42 0.27 5759.84 3768.6 167.8 3683.75 S 795.05 E 7275.00 46.24 167.37 0.25 5777.12 3786.6 167.8 3701.38 S 798.99 E 7300.00 46.20 167.28 0.31 5794.42 3804.7 167.8 3718.99 S 802.95 E 7325.00 46.30 167.24 0.42 5811.70 3822.7 167.8 3736.60 S 806.93 E 7350.00 46.25 167.16 0.31 5828.98 3840.8 167.8 3754.22 S 810.93 E 7375.00 46.14 167.06 0.53 5846.29 3858.8 167.8 3771.81 S 814.96 E 7400.00 46.13 167.05 0.05 5863.61 3876.9 167.8 3789.38 S 819.00 E • 7425.00 45.91 167.07 0.88 5880.97 3894.9 167.8 3806.91 S 823.03 E 7450.00 45.82 167.10 0.37 5898.38 3912.8 167.8 3824.40 S 827.04 E 7475.00 45.94 167.07 0.49 5915.79 3930.7 167.8 3841.89 S 831.05 E 7500.00 45.90 167.06 0.16 5933.18 3948.7 167.8 3859.39 S 835.07 E 7525.00 45.75 167.06 0.60 5950.60 3966.6 167.8 3876.87 S 839.08 E A Gyrodata Directional Survey BP ALASKA Location: SCHLUMBERGER TRUCK 2320, N. SLOPE BOROUGH,AK. Lease: PRUDHOE BAY,AK Well: E PAD WELL E -23B, 4 -1/2" TUBING Job Number: AK1210GCM224 MEASURED I N C L AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg. deg. deg./ feet feet deg. feet 100 ft. 7550.00 45.72 167.06 0.12 5968.05 3984.5 167.8 3894.32 S 843.09 E • 7575.00 45.97 167.10 1.01 5985.46 4002.5 167.8 3911.80 S 847.10 E 7600.00 45.81 167.01 0.69 6002.86 4020.4 167.8 3929.29 S 851.12 E 7625.00 45.83 167.04 0.12 6020.29 4038.3 167.8 3946.76 S 855.15 E 7650.00 46.02 167.05 0.76 6037.68 4056.3 167.8 3964.27 S 859.17 E 7675.00 46.05 167.08 0.15 6055.03 4074.3 167.8 3981.81 S 863.20 E 7700.00 46.08 167.12 0.17 6072.38 4092.3 167.8 3999.35 S 867.22 E 7725.00 46.21 167.11 0.52 6089.70 4110.3 167.8 4016.93 S 871.24 E 7750.00 46.25 167.08 0.18 6106.99 4128.4 167.8 4034.53 S 875.27 E 7775.00 46.26 167.10 0.07 6124.28 4146.4 167.8 4052.13 S 879.31 E 7800.00 45.95 167.11 1.24 6141.61 4164.5 167.8 4069.69 S 883.33 E 7825.00 46.03 167.13 0.33 6158.98 4182.4 167.8 4087.22 S 887.34 E 7850.00 46.17 167.18 0.58 6176.32 4200.4 167.7 4104.78 S 891.34 E 7875.00 46.19 167.16 0.10 6193.63 4218.5 167.7 4122.37 S 895.35 E 7900.00 46.27 167.20 0.34 6210.92 4236.5 167.7 4139.97 S 899.35 E 7925.00 46.25 167.25 0.17 6228.21 4254.6 167.7 4157.59 S 903.35 E • 7950.00 46.31 167.28 0.26 6245.48 4272.7 167.7 4175.21 S 907.33 E 7975.00 46.37 167.28 0.24 6262.74 4290.7 167.7 4192.85 S 911.31 E 8000.00 46.41 167.37 0.31 6279.99 4308.8 167.7 4210.51 S 915.28 E 8025.00 46.45 167.38 0.16 6297.22 4327.0 167.7 4228.19 S 919.24 E 8050.00 46.25 167.45 0.83 6314.47 4345.0 167.7 4245.84 S 923.18 E 8075.00 46.31 167.50 0.28 6331.75 4363.1 167.7 4263.48 S 927.10 E A Gyrodata Directional Survey BP ALASKA Location: SCHLUMBERGER TRUCK 2320, N. SLOPE BOROUGH,AK. Lease: PRUDHOE BAY,AK Well: E PAD WELL E -23B, 4 -1/2" TUBING Job Number: AK1210GCM224 MEASURED I N C L AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg. deg. deg./ feet feet deg. feet 100 ft. 8100.00 46.24 167.55 0.32 6349.03 4381.2 167.7 4281.12 S 931.01 E III 8125.00 46.02 167.61 0.90 6366.36 4399.2 167.7 4298.72 S 934.88 E 8150.00 46.10 167.63 0.33 6383.71 4417.2 167.7 4316.31 S 938.74 E 8175.00 45.95 167.55 0.64 6401.06 4435.2 167.7 4333.88 S 942.61 E 8200.00 45.75 167.55 0.80 6418.48 4453.1 167.7 4351.39 S 946.47 E 8225.00 45.71 167.57 0.17 6435.93 4471.0 167.7 4368.87 S 950.33 E 8250.00 45.60 167.58 0.44 6453.40 4488.9 167.7 4386.33 S 954.18 E 8275.00 45.65 167.59 0.20 6470.89 4506.8 167.7 4403.78 S 958.02 E 8300.00 45.68 167.56 0.15 6488.36 4524.7 167.7 4421.25 S 961.87 E 8325.00 45.47 167.51 0.85 6505.86 4542.5 167.7 4438.68 S 965.72 E 8350.00 45.17 167.42 1.23 6523.44 4560.3 167.7 4456.03 S 969.58 E 8375.00 45.14 167.37 0.19 6541.07 4578.0 167.7 4473.33 S 973.45 E 8400.00 45.06 167.33 0.34 6558.71 4595.7 167.7 4490.61 S 977.32 E 8425.00 44.90 167.32 0.64 6576.40 4613.4 167.7 4507.85 S 981.20 E 8450.00 44.84 167.14 0.56 6594.12 4631.0 167.7 4525.05 S 985.10 E 8475.00 44.25 165.96 4.07 6611.93 4648.6 167.7 4542.11 S 989.18 E • 8500.00 43.23 163.89 7.03 6630.00 4665.8 167.7 4558.80 S 993.67 E 8525.00 42.08 162.20 6.49 6648.38 4682.7 167.7 4575.00 S 998.61 E 8550.00 40.71 160.00 7.99 6667.14 4699.1 167.7 4590.64 S 1003.96 E 8575.00 39.52 157.85 7.30 6686.26 4715.1 167.6 4605.67 S 1009.75 E 8600.00 38.79 156.45 4.59 6705.64 4730.6 167.6 4620.21 S 1015.87 E 8625.00 37.78 155.44 4.75 6725.27 4745.7 167.6 4634.36 S 1022.19 E A Gyrodata Directional Survey BP ALASKA Location: SCHLUMBERGER TRUCK 2320, N. SLOPE BOROUGH,AK. Lease: PRUDHOE BAY,AK Well: E PAD WELL E -23B, 4 -1/2" TUBING Job Number: AK1210GCM224 MEASURED I N C L AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg. deg. deg./ feet feet deg. feet 100 ft. 8650.00 36.63 154.42 5.22 6745.18 4760.5 167.5 4648.05 S 1028.59 E • 8675.00 34.95 153.02 7.48 6765.46 4774.7 167.5 4661.16 S 1035.06 E 8700.00 33.77 152.06 5.19 6786.09 4788.3 167.4 4673.68 S 1041.56 E 8725.00 32.49 151.21 5.45 6807.03 4801.5 167.4 4685.70 S 1048.05 E 8750.00 30.35 149.93 8.97 6828.36 4814.0 167.3 4697.06 S 1054.45 E 8775.00 28.72 148.93 6.81 6850.11 4825.7 167.3 4707.67 S 1060.72 E 8800.00 27.41 148.54 5.29 6872.17 4836.8 167.3 4717.72 S 1066.82 E 8825.00 26.01 149.11 5.69 6894.51 4847.5 167.2 4727.33 S 1072.64 E 8850.00 24.88 149.59 4.59 6917.08 4857.7 167.2 4736.57 S 1078.11 E 8875.00 24.27 149.58 2.44 6939.82 4867.6 167.1 4745.54 S 1083.38 E 8900.00 23.93 149.47 1.37 6962.64 4877.4 167.1 4754.34 S 1088.56 E 8925.00 22.73 149.54 4.80 6985.59 4886.8 167.1 4762.87 S 1093.58 E 8950.00 21.68 149.82 4.22 7008.74 4895.8 167.0 4771.02 S 1098.35 E 8975.00 21.22 150.12 1.89 7032.01 4904.6 167.0 4778.94 S 1102.93 E 9000.00 20.47 150.89 3.19 7055.37 4913.1 167.0 4786.68 S 1107.31 E • 9025.00 19.49 151.63 4.05 7078.86 4921.3 166.9 4794.17 S 1111.41 E 9050.00 18.36 151.77 4.52 7102.51 4929.1 166.9 4801.31 S 1115.26 E 9075.00 18.21 151.53 0.67 7126.25 4936.7 166.9 4808.21 S 1118.98 E 9100.00 17.49 151.55 2.88 7150.05 4944.1 166.9 4814.95 S 1122.63 E 9125.00 16.04 151.89 5.81 7173.98 4951.1 166.9 4821.30 S 1126.05 E 9150.00 15.50 151.96 2.16 7198.04 4957.6 166.8 4827.29 S 1129.25 E A Gyrodata Directional Survey BP ALASKA Location: SCHLUMBERGER TRUCK 2320, N. SLOPE BOROUGH,AK. Lease: PRUDHOE BAY,AK Well: E PAD WELL E -23B, 4 -1/2" TUBING Job Number: AK1210GCM224 MEASURED I N C L AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg. deg. deg./ feet feet deg. feet 100 ft. 9175.00 15.08 151.64 1.71 7222.16 4964.0 166.8 4833.10 S 1132.36 E Ill 9200.00 14.83 151.51 1.01 7246.31 4970.2 166.8 4838.78 S 1135.44 E 9225.00 14.68 151.33 0.63 7270.49 4976.4 166.8 4844.37 S 1138.48 E 9250.00 14.53 151.44 0.61 7294.68 4982.4 166.8 4849.90 S 1141.50 E 9275.00 14.43 151.43 0.40 7318.88 4988.5 166.7 4855.39 S 1144.49 E 9300.00 13.15 152.86 5.30 7343.16 4994.2 166.7 4860.66 S 1147.28 E 9325.00 11.89 154.43 5.22 7367.57 4999.5 166.7 4865.51 S 1149.69 E 9350.00 11.13 156.28 3.38 7392.07 5004.4 166.7 4870.05 S 1151.77 E 9375.00 10.68 155.76 1.84 7416.61 5009.0 166.7 4874.37 S 1153.69 E 9400.00 10.63 155.64 0.22 7441.18 5013.6 166.7 4878.58 S 1155.59 E 9425.00 10.37 155.41 1.05 7465.76 5018.0 166.7 4882.73 S 1157.48 E 9450.00 10.32 155.45 0.20 7490.36 5022.4 166.7 4886.81 S 1159.35 E 9475.00 10.00 156.14 1.37 7514.97 5026.8 166.6 4890.83 S 1161.15 E 9500.00 9.98 156.35 0.17 7539.59 5031.0 166.6 4894.80 S 1162.90 E 9525.00 9.94 155.96 0.31 7564.21 5035.3 166.6 4898.76 S 1164.65 E 9550.00 9.94 156.85 0.61 7588.83 5039.5 166.6 4902.71 S 1166.38 E • 9575.00 10.24 157.21 1.23 7613.45 5043.9 166.6 4906.74 S 1168.09 E 9600.00 10.90 159.16 3.00 7638.02 5048.4 166.6 4911.00 S 1169.79 E 9625.00 11.34 159.82 1.83 7662.55 5053.2 166.6 4915.52 S 1171.48 E 9650.00 11.51 160.13 0.72 7687.06 5058.1 166.6 4920.17 S 1173.17 E 9675.00 11.26 161.15 1.28 7711.57 5063.0 166.6 4924.83 S 1174.81 E 9700.00 11.03 161.64 0.99 7736.10 5067.8 166.6 4929.41 S 1176.35 E A Gyrodata Directional Survey BP ALASKA Location: SCHLUMBERGER TRUCK 2320, N. SLOPE BOROUGH,AK. Lease: PRUDHOE BAY,AK Well: E PAD WELL E -23B, 4 -1/2" TUBING Job Number: AK1210GCM224 MEASURED I N C L AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg. deg. deg./ feet feet deg. feet 1 100 ft. 9725.00 10.89 161.96 0.61 7760.64 5072.6 166.6 4933.92 S 1177.83 E • 9750.00 10.91 161.26 0.54 7785.19 5077.3 166.6 4938.41 S 1179.33 E 9775.00 11.13 160.19 1.20 7809.73 5082.0 166.6 4942.92 S 1180.90 E 9800.00 11.26 158.42 1.47 7834.25 5086.8 166.6 4947.46 S 1182.62 E 9825.00 11.45 157.56 1.02 7858.76 5091.7 166.5 4952.02 S 1184.46 E 9850.00 11.54 157.58 0.36 7883.26 5096.6 166.5 4956.63 S 1186.37 E 9875.00 11.50 158.07 0.42 7907.76 5101.6 166.5 4961.25 S 1188.25 E 9900.00 11.34 158.42 0.70 7932.26 5106.5 166.5 4965.85 S 1190.08 E 9925.00 11.07 158.64 1.09 7956.79 5111.3 166.5 4970.37 S 1191.86 E 9950.00 10.87 159.49 1.03 7981.33 5116.0 166.5 4974.81 S 1193.56 E 9975.00 10.93 160.10 0.52 8005.88 5120.7 166.5 4979.25 S 1195.20 E 10000.00 10.86 160.63 0.49 8030.43 5125.4 166.5 4983.70 S 1196.78 E 10025.00 10.88 161.02 0.30 8054.98 5130.1 166.5 4988.15 S 1198.33 E 10050.00 11.16 161.12 1.12 8079.52 5134.8 166.5 4992.67 S 1199.88 E 10075.00 11.50 161.37 1.37 8104.03 5139.7 166.5 4997.32 S 1201.46 E • 10100.00 11.69 161.82 0.84 8128.52 5144.7 166.5 5002.09 S 1203.05 E 10125.00 11.72 162.69 0.72 8153.00 5149.8 166.5 5006.92 S 1204.59 E 10150.00 11.75 163.60 0.75 8177.48 5154.9 166.5 5011.79 S 1206.07 E 10175.00 11.62 165.38 1.53 8201.96 5159.9 166.5 5016.66 S 1207.42 E 10200.00 11.70 166.19 0.73 8226.44 5165.0 166.5 5021.56 S 1208.66 E 10225.00 11.82 166.59 0.58 8250.92 5170.1 166.5 5026.51 S 1209.86 E 10250.00 12.58 165.21 3.26 8275.35 5175.4 166.5 5031.64 S 1211.15 E A Gyrodata Directional Survey BP ALASKA Location: SCHLUMBERGER TRUCK 2320, N. SLOPE BOROUGH,AK. Lease: PRUDHOE BAY,AK Well: E PAD WELL E -23B, 4 -1/2" TUBING Job Number: AK1210GCM224 MEASURED I N C L AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg. deg. deg./ feet feet deg. feet 100 ft. 10275.00 14.22 162.57 7.00 8299.67 5181.1 166.5 5037.20 S 1212.76 E • 10300.00 15.62 159.99 6.20 8323.83 5187.5 166.5 5043.29 S 1214.84 E 10325.00 16.82 157.86 5.36 8347.83 5194.5 166.4 5049.81 S 1217.35 E 10350.00 18.55 156.71 7.06 8371.65 5202.0 166.4 5056.81 S 1220.29 E 10375.00 19.79 155.69 5.14 8395.27 5210.0 166.4 5064.32 S 1223.60 E 10400.00 21.86 156.30 8.33 8418.63 5218.8 166.4 5072.44 S 1227.21 E 10425.00 23.77 157.17 7.76 8441.67 5228.3 166.4 5081.34 S 1231.04 E 10450.00 25.76 156.96 7.97 8464.37 5238.7 166.4 5090.99 S 1235.12 E 10475.00 27.82 156.03 8.41 8486.69 5249.8 166.3 5101.32 S 1239.62 E 10500.00 29.32 155.34 6.14 8508.64 5261.5 166.3 5112.21 S 1244.54 E 10525.00 30.91 154.59 6.54 8530.27 5273.8 166.3 5123.58 S 1249.85 E 10550.00 32.45 153.66 6.46 8551.54 5286.7 166.3 5135.39 S 1255.58 E 10575.00 34.09 152.57 6.98 8572.45 5300.0 166.2 5147.62 S 1261.79 E 10600.00 35.73 151.48 7.02 8592.95 5313.9 166.2 5160.25 S 1268.50 E 10625.00 37.34 150.76 6.66 8613.03 5328.2 166.1 5173.28 S 1275.69 E ID 10650.00 38.98 151.44 6.77 8632.69 5343.2 166.1 5186.80 S 1283.15 E 10675.00 40.92 153.33 9.15 8651.86 5358.8 166.1 5201.03 S 1290.59 E 10700.00 42.74 155.82 9.85 8670.48 5375.1 166.0 5216.09 S 1297.74 E 10725.00 45.03 156.85 9.59 8688.50 5392.2 166.0 5231.96 S 1304.69 E 10750.00 47.77 157.75 11.27 8705.74 5410.1 166.0 5248.66 S 1311.68 E 10775.00 50.61 158.89 11.87 8722.08 5428.8 165.9 5266.24 S 1318.66 E A Gyrodata Directional Survey BP ALASKA Location: SCHLUMBERGER TRUCK 2320, N. SLOPE BOROUGH,AK. Lease: PRUDHOE BAY,AK Well: E PAD WELL E -23B, 4 -1/2" TUBING Job Number: AK1210GCM224 MEASURED I N C L AZIMUTH DOGLEG VERTICAL CLOSURE HORIZONTAL DEPTH SEVERITY DEPTH DIST. AZIMUTH COORDINATES feet deg. deg. deg./ feet feet deg. feet 100 ft. 10800.00 53.55 160.59 12.92 8737.44 5448.4 165.9 5284.74 S 1325.48 E . 10825.00 55.22 162.32 8.73 8752.00 5468.7 165.9 5304.01 S 1331.94 E 10850.00 57.18 163.63 8.97 8765.91 5489.4 165.9 5323.88 S 1338.02 E 10875.00 59.11 163.61 7.72 8779.10 5510.7 165.9 5344.25 S 1344.01 E 10900.10 60.51 165.66 9.00 8791.72 5532.3 165.9 5365.17 S 1349.76 E Final Station Closure: Distance: 5532.35 ft Az: 165.88 deg. • 1 I BP ALASKA 03 Jan 14:20 Interp In run Well: PRUDHOE BAY,AK E PAD WELL E -23B 4 -1/2" TUBING Gyrodata Location: SCHLUMBERGER TRUCK 2320, N. SLOPE BOROUGH,AK. AK1210GCM224 DEFINITIVE 0 -500 -1000 - 1500 i -2000 -2500 C. z z I -3000 0 -3500 - -4000 - • - 4500 BOTTOM HOLE LOCATED MD: 10900.07 -5000 - 5500 0 200 400 600 800 1000 1200 1400 EASTING (ft) BP ALASKA 03 Jan 14:20 Interp Inrun Well: PRUDHOE BAY,AK E PAD WELL E-23B 4-1/2" TUBING Gyrodata Location: SCHLUMBERGER TRUCK 2320, N. SLOPE BOROUGH,AK. AK1210GCM224 DEFINITIVE 24 22 20 18 '-' - • 0 16 o ,-1 la) a) - 13 14 - C - LU 12 > - u.) u - (.9 Lu 10 - -J _ 0 0 - BOOM HOLE 0 8- - t i T MD: 1090 .07 !I • p 41 • 4 Jfirsei\ ill 1 P • 1 1 i * • 4,1. • ■ 1, ' 't i 41' 0 1111 111 1 11 1 1 I 1 I I 1 1 1 III I I I 1 i 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 MEASURED DEPTH (ft) BP ALASKA 03 Jan 14:20 Interp Inrun Well: PRUDHOE BAY,AK E PAD WELL E -23B 4 -1/2" TUBING Gyrodata Location: SCHLUMBERGER TRUCK 2320, N. SLOPE BOROUGH,AK. AK1210GCM224 DEFINITIVE 60- BOTTOM HOLE LOCATED 55 MD: 10900.07 50 45 40 • z - O 35— z - u z 25 20- 15 10 5 i 0 iiii iIFi 'Ili 1111 1iiiiii 1111 1111 1111 1111H11 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 MEASURED DEPTH (ft) BP _ALASKA 03 Jan 14:21 Interp Inrun Well: PRUDHOE BAY,AK E PAD WELL E-23B 4-1/2" TUBING Gyroclata Location: SCHLUMBERGER TRUCK 2320, N. SLOPE BOROUGH,AK. AK1210GCM224 DEFINITIVE 180 17O BOTTOM HOLE LOCATED 160 MD: 10900.07 • 150 - • 1— 140 130 • 120 f • 110 100 liii 1111 1111 1111 1111 1111 1111 1111 1111 1111 III 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 MEASURED DEPTH (ft) Survey QC - RGS -CT Acceptance Sheet i • FIELD AND SURVEY INFORMATION Operator BP ALASKA Field / Platform SCHLUMBERGER TRUCK 2320 Well Number PRUDHOE BAY,AK E PAD WELL E -23B Survey section From 0 ft. to 10900.1 ft. Date 12/30/2010 Gyrodata Job No AK1210GCM224 Gyrodata Surveyors Henry Drew Job Objective High Accuracy Gyro Survey SURVEY PERFORMANCE In Spec' QC Parameter Yes /No /NA Possible Actions Contact Duty Engineer to discuss options: Operational temperature within Yes 1. Recalibrate tool to higher temperature specification 2. Resurvey with backup tool 3. Resurvey 'Hot' section at higher speed Roll test data within specification Contact Duty Engineer to discuss options: Only valid on land /fixed installations Yes 1. Recalibrate tool and reprocess survey 2. Resurvey with backup tool Continuous initialisation within Take new initialisation, after three failures: specification Yes 1. Contact Duty Engineer or, 2. Resurvey with back up tool. Contact Duty Engineer to discuss options: Toolface rate within specification Yes Resurvey section from previous bias check Investigate and comment if effects are negligible Contact Duty Engineer to discuss options: Drift tunes within specification Yes 1. Reprocess with different software settings 2. Resurvey with backup tool Inrun /Outrun comparison within Contact Duty Engineer to discuss options. specification Yes Resurvey is usually not required if either inrun or outrun meet all other QC parameters Depth control within specification Yes Contact Duty Engineer to discuss options. Action taken: Note: Provided satisfactory action has been taken, parameters out with specification will not necessarily fail a survey. SURVEY ACCEPTED Gyrodata Representative Client's Representative SURV -Q166 (OPS SUR -MA -003) 13 Nov 03 / Revision 12 Page 1 of 1 AK1210GCM224 II • w - Survey QC - RGS -CT Analysis Sheet !gym/. SURVEY QUALITY CONTROL - DATA ANALYSIS REFERENCE SYSTEMS Grid System I I Grid Correction 1 0.00 Azimuth reference: Grid / True North TRUE NORTH Vertical reference: RKB /MSL/Other I If other give details I TIE ON DATA Depth 0.00 Inclination 0.00 Azimuth 0.00 I TVD 1 0.00 Northings 0.00 Eastings 0.00 Latitude 70.3387 Az. Ref: Grid /True Grid Corrected Y /N? Description I CALIBRATION Tool Number 1 1519 I Calibration Date 114 Jun 2010 I OPERATING TEMPERATURE Calibration range From 49.67 To 120.00 Gyro operating range From _ 61.61 To 95.43 I Spec' - Within calibration range FIELD ROLL TEST (Only valid on fixed structures. When not possible input roll test data performed after return to base) Cal value Pre job offset Post job offset Abs dif.cal.post Abs dif.pre.post Spec' Accel Scale 0.000000 0.000000 N/A Cal /Post - 0.00015 Mass Unbalance 0.00 0.00 N/A Pre /Post - 0.4 ° /hr INITIALISATION Depth (Approx) 1580.35 No of stns 6 Spec' - Min No. - 6 Azimuth Mean 165.85 Std deviation 0.14 Spec' - Azi SD 0.2° Inclination Mean 10.67 Std deviation 0.00 Spec' - Inc SD 0.1° Earth Horizontal Rate Mean (Abs(meas - theor)) 1 0.04 Std deviation 0.02 Spec' - See Q167 DRIFT TUNE Residual x gyro bias , Mean - 0.002 Std dev' 0.003 Spec's - Mean and SD - 0.333 ° /hr Residual y gyro bias Mean - 0.002 Std dev' 0.002 Spec's - Mean and SD - 0.333 ° /hr TOOLFACE RATE Maximum toolface rate 1 22.29 I Spec' - 400 ° /sec I IN /OUT COMPARISON (AZI' N/A IF INC' <15° Inclination Difference Mean 0.04 Std dev' 0.08 Spec's - Casing 0.3° /Drill pipe 0.3° Azimuth Difference Mean 0.05 Std dev' 0.25 Spec's - Casing 0.5° /Drill pipe 0.75° Lateral Divergence /1000 0.94 Spec - 5.0/1000 1 Vertical Divergence /1000 0.48 Spec' - 2.0/1000 DEPTH CONTROL Wireline Company Schlumberger I Line type 15/32 Encoder SF I Schlumberger Max Depth (TD) 10900.1 CCL Corrected No Zero Depth (Rig up) RKB @ 68.05 ft AMSL Rezero Depth -8.4 Given pup joint depth I NA Measured PJ NA Strech cor. At TD divided by TD /1000 .91 Spec' - 1.5/1000 Dif. Between rigup and rezero depths divided by TD /1000 .80 Spec' - 2.0/1000 Dif. Between given and meas depth divided by meas /1000 NA Spec' - 2.0/1000 SURV -Q165 (OPS SUR -MA -010) 22n lan 2004 / Revision 20 Page 1 of 1 AK1210GCM224 Survey QC - RGS-CT Sp edification Sheet f gYrO/data , SURVEY QUALITY CONTROL - SPECIFICATION DATA PRE -JOB CALIBRATION VERIFICATION CHECK (ROLL TEST) Station ToolFace Gravity Error Scale Factor Rate Error (deg) (Mg) Uncertainty (deg /min) 129 270.08 96.38 0.00002408 -14.09 128 270.08 102.20 0.00002554 -14.09 127 270.08 97.70 0.00002441 -13.87 126 270.08 105.72 0.00002642 -14.34 125 225.05 - 1818.72 - 0.00045368 -17.02 124 225.05 - 1813.67 - 0.00045242 -17.24 123 225.05 - 1791.29 - 0.00044686 -18.90 122 225.05 - 1814.02 - 0.00045251 -15.12 121 45.21 - 1809.85 - 0.00045147 21.39 120 45.21 - 1805.09 - 0.00045029 24.13 119 45.21 - 1811.12 - 0.00045179 22.23 118 45.21 - 1813.19 - 0.00045230 20.47 117 0.62 - 3065.70 - 0.00076229 13.10 116 0.62 - 3062.73 - 0.00076155 13.30 115 0.62 - 3059.15 - 0.00076067 15.64 114 0.62 - 3059.68 - 0.00076080 12.93 113 328.56 - 1895.65 - 0.00047166 6.43 112 328.56 - 1898.61 - 0.00047240 5.45 111 328.56 - 1897.47 - 0.00047211 5.53 110 328.56 - 1896.85 - 0.00047196 4.38 109 300.29 - 410.70 - 0.00010243 -4.56 108 300.29 - 409.01 - 0.00010201 -4.90 107 300.29 - 430.34 - 0.00010732 -3.14 106 300.29 - 408.48 - 0.00010187 -4.44 105 300.29 - 412.24 - 0.00010281 -4.90 104 269.69 84.72 0.00002117 -13.80 103 269.69 93.99 0.00002349 -13.08 102 269.69 87.60 0.00002189 -13.50 101 269.69 91.11 0.00002277 -16.10 100 240.02 - 984.04 - 0.00024575 -15.02 99 240.02 - 983.80 - 0.00024569 -15.46 98 240.02 - 995.59 - 0.00024863 -16.24 97 240.02 - 991.53 - 0.00024761 -16.15 96 209.89 - 2558.62 - 0.00063740 -12.85 95 209.89 - 2559.34 - 0.00063758 -15.06 94 209.89 - 2555.93 - 0.00063673 -14.55 93 209.89 - 2550.55 - 0.00063540 -18.92 92 179.36 - 3037.47 - 0.00075526 -6.55 91 179.36 - 3037.45 - 0.00075526 -7.97 90 179.36 - 3037.08 - 0.00075517 -5.54 89 179.36 - 3029.78 - 0.00075336 -4.03 88 150.05 - 1959.84 - 0.00048760 2.33 87 150.05 - 1957.69 - 0.00048707 2.57 86 150.05 - 1956.88 - 0.00048687 2.59 85 150.05 - 1964.71 - 0.00048881 4.17 84 120.26 - 418.97 - 0.00010449 14.01 83 120.26 - 398.41 - 0.00009937 12.14 82 120.26 - 408.24 - 0.00010182 14.35 81 120.26 - 410.62 - 0.00010241 14.95 80 88.46 68.97 0.00001724 20.25 79 88.46 66.01 0.00001650 16.92 78 88.46 63.76 0.00001593 18.13 77 88.46 63.41 0.00001585 16.24 76 60.31 - 975.14 - 0.00024353 20.56 75 60.31 -970.12 - 0.00024228 23.18 74 60.31 - 967.42 - 0.00024160 21.91 73 60.31 - 971.10 - 0.00024252 19.97 72 30.40 - 2542.10 - 0.00063331 20.20 71 30.40 - 2541.37 - 0.00063313 20.40 70 30.40 - 2534.32 - 0.00063138 22.34 SURV -Q167 (OPS SUR -MA -003) 19 Nov 03 / Rev 15 Page 1 of 14 AK1210GCM224 I ■ Survey QC - RGS -CT Speication Sheet f gyro /data 69 30.40 - 2548.28 - 0.00063484 25.58 68 0.10 - 3042.40 - 0.00075651 15.05 67 0.10 - 3053.71 - 0.00075930 12.31 66 0.10 - 3051.79 - 0.00075883 10.93 65 0.10 - 3045.49 - 0.00075727 11.54 64 270.64 122.35 0.00003057 -3.52 63 270.64 114.92 0.00002872 -6.35 62 270.64 114.58 0.00002863 -6.22 61 270.64 122.58 0.00003063 -1.40 60 224.82 - 1801.97 - 0.00044952 -9.55 59 224.82 - 1804.19 - 0.00045007 -11.27 58 224.82 - 1805.38 - 0.00045037 -9.75 57 224.82 - 1804.08 - 0.00045004 -11.96 56 45.90 - 1762.34 - 0.00043966 13.04 55 45.90 - 1776.26 - 0.00044312 14.78 54 45.90 - 1761.12 - 0.00043935 15.72 53 45.90 - 1744.93 - 0.00043533 12.88 52 0.75 - 3033.98 - 0.00075445 20.99 51 0.75 - 3042.55 - 0.00075657 16.39 50 0.75 - 3044.61 - 0.00075708 14.52 49 0.75 - 3035.94 - 0.00075494 14.29 48 330.70 - 1986.30 - 0.00049418 10.37 47 330.70 - 1982.31 - 0.00049319 11.05 46 330.70 - 1981.86 - 0.00049308 12.96 45 330.70 - 1974.71 - 0.00049130 14.12 44 301.10 - 446.19 -0.00011127 4.71 43 301.10 - 435.53 - 0.00010862 4.46 42 301.10 - 433.99 - 0.00010823 4.88 41 301.10 - 426.97 - 0.00010648 3.87 40 270.72 121.36 0.00003033 -4.78 39 270.72 125.85 0.00003145 -6.36 38 270.72 113.27 0.00002830 -3.76 37 270.72 129.73 0.00003242 -4.33 36 240.69 - 925.97 - 0.00023127 -8.06 35 240.69 - 937.25 - 0.00023408 -7.11 34 240.69 - 927.85 - 0.00023173 -6.99 33 240.69 - 926.39 - 0.00023137 -7.13 32 211.05 - 2499.18 - 0.00062267 -7.92 31 211.05 - 2499.60 - 0.00062277 -8.47 30 211.05 - 2511.95 - 0.00062583 -7.66 29 211.05 - 2516.44 - 0.00062695 -5.83 28 179.88 - 3020.79 - 0.00075116 3.02 27 179.88 - 3019.33 - 0.00075080 2.42 26 179.88 - 3018.12 - 0.00075050 0.71 25 179.88 - 3020.96 - 0.00075120 0.26 24 150.99 - 1985.36 - 0.00049395 3.91 23 150.99 - 1989.54 - 0.00049499 4.29 22 150.99 - 1985.99 - 0.00049411 5.13 21 150.99 - 1986.68 - 0.00049428 5.10 20 121.04 - 432.47 - 0.00010785 5.81 19 121.04 - 432.01 - 0.00010774 6.05 18 121.04 - 422.68 - 0.00010541 7.80 17 121.04 - 428.86 - 0.00010695 9.43 16 91.16 127.03 0.00003174 7.90 15 91.16 111.14 0.00002777 6.40 14 91.16 112.73 0.00002817 6.92 13 91.16 119.37 0.00002983 8.41 12 60.97 - 926.81 - 0.00023147 7.68 11 60.97 - 927.81 - 0.00023172 9.53 10 60.97 - 913.63 - 0.00022819 7.37 9 60.97 - 912.88 - 0.00022800 7.27 8 29.96 - 2548.83 - 0.00063497 12.37 7 29.96 - 2549.47 - 0.00063513 13.22 6 29.96 - 2550.26 - 0.00063533 13.14 5 29.96 - 2550.32 - 0.00063534 12.54 4 359.34 - 3029.96 - 0.00075341 13.31 SURV -Q167 (OPS SUR -MA -003) 19 Nov 03 / Rev 15 Page 2 of 14 AK1210GCM224 ■ Survey QC - RGS -CT Specification Sheet IP gyroldata 3 359.34 - 3035.56 - 0.00075479 13.11 2 359.34 - 3044.25 - 0.00075694 13.92 1 359.34 - 3055.79 - 0.00075979 15.20 MBO = 0.45 Gravity Error = - 1500.66 Scale Factor Uncertainty = - 0.00037366 Rate Error = 3.48 POST - JOB CALIBRATION VERIFICATION CHECK (ROLL TEST) Station ToolFace Gravity Error Scale Factor Rate Error (deg) (Mg) Uncertainty (deg /min) 66 269.56 -32.03 - 0.00000800 -4.26 65 269.56 -31.41 - 0.00000785 -6.60 64 225.14 - 1996.31 - 0.00049780 -21.50 63 225.14 - 1989.60 - 0.00049613 -27.56 62 46.32 - 1929.26 - 0.00048113 -7.96 61 46.32 - 1920.71 - 0.00047901 -9.09 60 359.98 - 3298.52 - 0.00081977 -1.30 59 359.98 - 3299.68 - 0.00082006 -2.93 58 330.81 - 2225.22 - 0.00055336 -1.25 57 330.81 - 2225.77 - 0.00055350 -1.92 56 300.85 - 587.67 - 0.00014651 -0.22 55 300.85 - 586.40 - 0.00014620 -0.42 54 269.68 -22.22 - 0.00000555 -0.31 53 269.68 -20.33 - 0.00000508 -3.04 52 241.10 - 1078.03 - 0.00026916 2.47 51 241.10 - 1074.31 - 0.00026823 -1.03 50 211.79 - 2706.75 - 0.00067411 2.85 49 211.79 - 2704.69 - 0.00067360 2.42 48 181.17 - 3310.43 - 0.00082276 4.08 47 181.17 - 3310.85 - 0.00082286 2.92 46 151.47 - 2256.45 - 0.00056111 1.53 45 151.47 - 2254.24 - 0.00056056 0.12 44 120.66 - 577.80 - 0.00014405 -0.09 43 120.66 - 566.69 - 0.00014129 -3.20 42 91.11 -5.64 - 0.00000141 -4.06 41 91.11 -7.79 - 0.00000195 -4.45 40 59.84 - 1145.92 - 0.00028608 -7.04 39 59.84 - 1146.35 - 0.00028619 -8.72 38 30.49 - 2758.16 - 0.00068684 -9.72 37 30.49 - 2755.33 - 0.00068614 -13.23 36 359.52 - 3289.18 - 0.00081745 -12.52 35 359.52 - 3285.39 - 0.00081651 -16.23 34 270.37 -13.35 - 0.00000333 -3.30 33 270.37 -10.64 - 0.00000266 -5.69 32 224.52 - 2026.98 - 0.00050543 -16.56 31 224.52 - 2020.70 - 0.00050387 -23.71 30 44.95 - 1995.16 - 0.00049752 -6.02 29 44.95 - 1990.72 - 0.00049642 -7.58 28 358.91 - 3278.12 - 0.00081469 -0.67 27 358.91 - 3275.95 - 0.00081416 -3.44 26 330.42 - 2209.94 - 0.00054957 0.32 25 330.42 - 2208.68 - 0.00054925 -0.67 24 300.66 - 577.35 - 0.00014394 -0.94 23 300.66 - 571.32 - 0.00014244 -2.23 22 269.03 -35.42 - 0.00000885 1.25 21 269.03 -36.64 - 0.00000915 -1.29 20 239.94 - 1143.73 - 0.00028554 3.60 19 239.94 - 1136.97 - 0.00028385 3.53 18 210.43 - 2766.26 - 0.00068884 4.18 17 210.43 - 2754.07 - 0.00068582 2.69 16 181.25 - 3306.51 - 0.00082180 4.29 15 181.24 - 3300.37 - 0.00082028 4.33 14 150.90 - 2219.26 - 0.00055189 2.47 13 150.90 - 2216.43 - 0.00055119 0.45 SURV -Q167 (OPS SUR -MA -003) 19`" Nov 03 / Rev 15 Page 3 of 14 AK121OGCM224 P Survey QC - RGS -CT Spec�ication Shee rO a . 12 120.95 - 575.46 - 0.00014347 0.39 11 120.95 - 570.88 - 0.00014233 -1.13 10 91.01 -4.15 - 0.00000104 -5.87 9 91.01 -2.75 - 0.00000069 -6.06 8 61.58 - 1049.40 - 0.00026202 -7.14 7 61.58 - 1035.60 - 0.00025858 -8.34 6 30.70 - 2736.80 - 0.00068155 -4.25 5 30.70 - 2746.33 - 0.00068391 -5.65 4 358.96 - 3281.60 - 0.00081555 -1.54 3 358.96 - 3281.72 - 0.00081558 -2.14 2 358.96 - 3284.27 - 0.00081621 -0.24 1 358.96 - 3283.53 - 0.00081603 1.03 MBO = 0.09 Gravity Error = - 1747.67 Scale Factor Uncertainty = - 0.00043496 Rate Error = -3.61 INITIALISATION Gyro Compass Reading / Station Raw Inclination Raw Azimuth Abs (ERM ERm ee) 16 10.67 165.72 0.0465 17 10.67 165.75 0.0418 18 10.67 165.79 0.0572 19 10.67 166.08 0.0638 20 10.67 165.83 0.0211 21 10.67 165.97 0.0332 Average 10.67 165.85 0.0439 Tolerance on Average* 0.0834 Standard Deviation 0.00 0.14 0.0156 Tolerance on St. Dev. ** 0.1 0.2 0.0407 Advanced Initialisation Azimuth Advanced Initialisation Standard Deviation Tolerance = TBA * Tolerance on Average of earth horizontal rate difference is given by (1 /Cos1) * J[(CosA *SinI *0.1) +0.08 ° /hr ** Tolerance on Standard Deviation of earth horizontal rate difference tolerance is given by (1 /Cosl) *J[(cosA *SinI *0.1) +(0.08 /(n -1))) ° /hr DRIFT TUNES Drift Tune I Ending Ending Ending Ending Residual Gx Bias Residual Gy Bias Number Time Depth Inclination Azimuth Start End Start End 1 446.42 1740.36 15.01 170.66 -0.001 -0.001 0.001 -0.000 2 1411.75 3600.51 48.90 164.49 0.000 -0.006 0.001 -0.005 3 1451.11 5700.43 43.33 166.27 0.000 -0.002 0.001 -0.005 4 1549.78 7700.96 46.03 166.96 -0.005 -0.001 -0.003 -0.003 5 1261.19 9300.53 13.09 152.97 0.000 -0.006 0.001 0.000 6 1459.36 10200.12 11.80 167.88 -0.003 0.004 0.000 0.000 7 878.17 10900.07 60.43 165.66 0.000 -0.001 0.000 -0.001 8 616.80 10350.35 18.80 158.48 0.000 -0.001 0.000 -0.002 9 413.50 10200.16 11.55 168.43 -0.000 -0.001 0.002 0.001 10 830.08 9299.46 13.02 156.81 0.007 -0.010 -0.002 0.002 11 1149.64 7700.76 45.94 171.18 0.000 -0.003 0.000 -0.004 12 1389.64 5700.38 43.27 170.53 0.000 -0.004 -0.001 -0.002 13 1400.81 3600.38 48.85 168.75 0.000 -0.006 0.001 -0.003 SURV -Q167 (OPS SUR -MA -003) 19 Nov 03 / Rev 15 Page 4 of 14 AK1210GCM224 c Survey QC - RGS -CT SpeZ'ffication Sheet 11 gr 14 1922.72 1740.21 15.22 174.56 0.001 0.001 0.001 -0.003 15 449.11 1580.76 10.84 171.33 0.002 -0.001 0.006 -0.006 Average 0.000 -0.002 0.000 -0.002 Standard Deviation 0.003 0.003 0.002 0.002 Tolerance for both the Average and the Standard Deviation 0.033 ° /hr 0.033° /hr 0.033 ° /hr 0.033 ° /hr INCLINATION AND AZIMUTH INRUN AND OUTRUN COMPARISON Depth Corrected Inclination Corrected Azimuth Inrun * I Outrun * I Difference Inrun * I Outrun * I Difference 100.00 0.27 0.22 0.05 172.69 197.75 -25.07 200.00 0.30 0.28 0.02 170.76 173.43 -2.67 300.00 0.30 0.33 -0.02 172.69 170.90 1.79 400.00 0.34 0.39 -0.05 158.33 158.61 -0.28 500.00 0.39 0.36 0.03 147.39 149.81 -2.42 600.00 0.62 0.70 -0.09 122.62 118.72 3.90 700.00 2.55 2.46 0.09 94.96 97.21 -2.25 800.00 2.61 2.60 0.01 96.81 96.05 0.76 900.00 2.60 2.62 -0.03 105.14 104.57 0.57 1000.00 2.74 2.70 0.05 108.39 110.43 -2.04 1100.00 2.61 2.65 -0.03 120.89 120.04 0.85 1200.00 3.08 3.13 -0.06 130.18 132.25 -2.07 1300.00 4.93 4.90 0.02 156.88 157.12 -0.23 1400.00 5.62 5.71 -0.09 163.56 162.58 0.98 1500.00 7.49 7.72 -0.23 163.39 163.10 0.30 1575.00 10.46 10.50 -0.04 165.80 166.45 -0.65 1600.00 11.41 11.41 -0.00 167.56 167.50 0.06 1625.00 12.02 12.03 -0.00 168.85 169.35 -0.49 1650.00 12.82 12.88 -0.06 169.78 169.88 -0.10 1675.00 13.30 13.24 0.06 169.48 169.99 -0.51 1700.00 13.73 13.75 -0.02 170.37 171.18 -0.81 1725.00 14.52 14.68 -0.17 170.87 170.76 0.11 1750.00 15.20 15.07 0.13 170.33 170.19 0.14 1775.00 15.99 15.98 0.02 168.99 170.04 -1.06 1800.00 16.89 16.90 -0.01 168.60 168.88 -0.28 1825.00 17.83 17.99 -0.16 168.34 169.14 -0.81 1850.00 18.84 18.84 0.00 168.41 169.11 -0.71 1875.00 19.14 19.41 -0.26 169.01 169.24 -0.23 1900.00 19.79 19.73 0.06 169.82 170.14 -0.32 1925.00 20.09 19.96 0.14 169.83 170.37 -0.55 1950.00 20.52 20.34 0.18 170.71 171.34 -0.63 1975.00 20.90 20.85 0.05 171.31 172.10 -0.79 2000.00 21.38 21.46 -0.08 171.86 172.53 -0.66 2025.00 22.12 22.22 -0.10 172.47 172.75 -0.28 2050.00 22.85 22.89 -0.04 172.80 173.00 -0.20 2075.00 23.71 23.65 0.06 173.03 173.33 -0.31 SURV -Q167 (OPS SUR -MA -003) 19 Nov 03 / Rev 15 Page 5 of 14 AK121OGCM224 I Survey QC - RGS -CT Specification Sheet , gYrOidatC/ 2100.00 24.70 24.88 -0.18 173.38 173.78 -0.40 2125.00 25.63 25.64 -0.00 173.58 174.06 -0.47 2150.00 26.44 26.40 0.04 173.78 173.84 -0.07 2175.00 26.92 26.81 0.11 173.92 174.22 -0.30 2200.00 27.55 27.55 -0.01 174.31 174.36 -0.06 2225.00 27.93 27.92 0.01 174.77 174.73 0.04 2250.00 28.45 28.29 0.16 175.18 175.45 -0.27 2275.00 28.64 28.71 -0.07 175.26 175.57 -0.31 2300.00 29.11 29.18 -0.07 175.51 175.90 -0.39 2325.00 29.46 29.49 -0.03 175.64 176.07 -0.43 2350.00 30.06 30.08 -0.02 175.80 175.74 0.06 2375.00 30.79 30.86 -0.06 175.60 175.52 0.07 2400.00 31.22 31.19 0.03 175.44 175.49 -0.05 2425.00 32.16 32.11 0.05 175.36 175.40 -0.04 2450.00 32.77 32.79 -0.02 175.43 175.45 -0.02 2475.00 33.73 33.69 0.04 175.53 175.56 -0.02 2500.00 34.77 34.79 -0.02 175.71 175.76 -0.04 2525.00 35.54 35.52 0.02 175.86 175.84 0.02 2550.00 36.64 36.58 0.06 176.20 176.20 0.00 2575.00 37.28 37.27 0.00 176.42 176.45 -0.03 2600.00 38.10 38.06 0.04 176.79 176.85 -0.05 2625.00 38.77 38.73 0.05 177.17 177.21 -0.04 2650.00 39.21 39.16 0.05 177.40 177.44 -0.04 2675.00 39.84 39.78 0.07 177.72 177.75 -0.03 2700.00 40.29 40.29 0.00 177.92 178.00 -0.08 2725.00 40.99 40.99 -0.00 178.24 178.30 -0.07 2750.00 41.69 41.66 0.03 178.58 178.62 -0.04 2775.00 41.95 41.87 0.08 178.65 178.66 -0.01 2800.00 42.19 42.10 0.09 178.71 178.71 -0.01 2825.00 42.44 42.40 0.04 178.78 178.76 0.02 2850.00 43.27 43.28 -0.01 178.81 178.77 0.04 2875.00 44.25 44.31 -0.06 178.66 178.60 0.05 2900.00 45.24 45.23 0.02 178.25 178.11 0.14 2925.00 45.98 45.92 0.06 177.26 177.20 0.05 2950.00 46.28 46.23 0.05 176.75 176.61 0.14 2975.00 46.62 46.55 0.07 176.28 176.18 0.10 3000.00 46.99 46.94 0.04 175.44 175.30 0.13 3025.00 47.29 47.20 0.08 175.18 175.13 0.05 3050.00 47.48 47.41 0.07 174.98 174.93 0.05 3075.00 47.67 47.61 0.06 174.86 174.79 0.07 3100.00 47.85 47.80 0.05 174.71 174.68 0.04 3125.00 47.98 47.90 0.08 174.62 174.52 0.10 3150.00 47.78 47.60 0.18 174.21 174.03 0.18 3175.00 45.83 45.54 0.29 172.58 172.31 0.27 SURV -Q167 (OPS SUR -MA -003) 19 Nov 03 / Rev 15 Page 6 of 14 AK1210GCM224 • Survey QC - RGS -CT Sptfication Sheet f gifrOidata 3200.00 44.45 44.29 0.16 171.12 170.82 0.30 3225.00 43.99 43.90 0.09 169.88 169.72 0.16 3250.00 44.13 44.10 0.04 168.96 168.75 0.20 3275.00 44.88 44.90 -0.03 167.60 167.32 0.28 3300.00 46.10 46.09 0.01 165.78 165.55 0.22 3325.00 46.67 46.62 0.05 165.01 164.83 0.18 3350.00 46.95 46.87 0.08 164.70 164.61 0.09 3375.00 47.08 47.01 0.07 164.59 164.51 0.08 3400.00 47.08 47.00 0.08 164.53 164.36 0.17 3425.00 47.20 47.13 0.08 164.54 164.35 0.18 3450.00 47.38 47.32 0.06 164.45 164.35 0.10 3475.00 47.57 47.52 0.05 164.43 164.35 0.07 3500.00 47.91 47.88 0.03 164.45 164.36 0.09 3525.00 48.20 48.16 0.03 164.45 164.38 0.07 3550.00 48.45 48.40 0.05 164.47 164.38 0.09 3575.00 48.67 48.63 0.03 164.48 164.40 0.08 3600.00 48.89 48.85 0.04 164.47 164.39 0.07 3625.00 49.14 48.99 0.15 164.47 164.42 0.05 3650.00 49.36 49.21 0.15 164.42 164.39 0.03 3675.00 49.57 49.43 0.14 164.44 164.42 0.02 3700.00 49.55 49.41 0.14 164.36 164.36 0.01 3725.00 49.46 49.33 0.13 164.35 164.35 0.01 3750.00 49.65 49.51 0.14 164.34 164.32 0.02 3775.00 49.88 49.74 0.14 164.34 164.32 0.02 3800.00 50.10 49.98 0.13 164.30 164.30 -0.00 3825.00 50.35 50.21 0.13 164.31 164.27 0.04 3850.00 50.55 50.43 0.13 164.30 164.29 0.01 3875.00 50.77 50.65 0.13 164.32 164.31 0.01 3900.00 50.98 50.85 0.13 164.30 164.29 0.01 3925.00 51.07 50.92 0.15 164.31 164.31 -0.00 3950.00 51.13 50.99 0.14 164.29 164.33 -0.04 3975.00 51.15 51.03 0.12 164.29 164.34 -0.05 4000.00 51.33 51.22 0.12 164.29 164.32 -0.04 4025.00 51.53 51.42 0.12 164.29 164.33 -0.04 4050.00 51.51 51.40 0.11 164.25 164.28 -0.03 4075.00 51.72 51.61 0.11 164.23 164.27 -0.04 4100.00 51.68 51.56 0.12 164.10 164.10 0.00 4125.00 51.80 51.68 0.12 164.10 164.13 -0.03 4150.00 52.04 51.92 0.12 164.08 164.11 -0.04 4175.00 51.82 51.71 0.11 164.05 164.10 -0.05 4200.00 50.97 50.84 0.13 163.93 163.99 -0.06 4225.00 50.12 49.99 0.13 163.85 163.91 -0.07 4250.00 48.86 48.71 0.14 163.94 164.02 -0.08 4275.00 46.82 46.69 0.13 164.46 164.56 -0.10 4300.00 45.77 45.67 0.10 165.13 165.21 -0.08 SURV -Q167 (OPS SUR -MA -003) 19 Nov 03 / Rev 15 Page 7 of 14 AK1210GCM224 Survey QC - RGS -CT Speeication Sheet gyroldata 4325.00 45.65 45.56 0.09 165.42 165.51 -0.09 4350.00 45.83 45.73 0.10 165.47 165.56 -0.08 4375.00 45.84 45.74 0.10 165.50 165.57 -0.08 4400.00 45.94 45.80 0.14 165.54 165.59 -0.05 4425.00 45.75 45.63 0.12 165.57 165.66 -0.09 4450.00 45.83 45.73 0.10 165.59 165.67 -0.08 4475.00 45.96 45.85 0.11 165.57 165.65 -0.09 4500.00 45.67 45.57 0.10 165.54 165.60 -0.06 4525.00 45.58 45.46 0.12 165.60 165.64 -0.05 4550.00 45.15 45.05 0.10 165.65 165.70 -0.05 4575.00 44.95 44.85 0.10 165.74 165.71 0.03 4600.00 44.56 44.44 0.12 165.72 165.75 -0.02 4625.00 44.50 44.39 0.10 165.76 165.81 -0.04 4650.00 44.41 44.31 0.10 165.79 165.87 -0.08 4675.00 44.33 44.23 0.10 165.79 165.88 -0.09 4700.00 44.22 44.14 0.08 165.78 165.86 -0.08 4725.00 44.19 44.12 0.08 165.82 165.88 -0.06 4750.00 44.22 44.12 0.10 165.77 165.82 -0.05 4775.00 44.22 44.12 0.10 165.77 165.82 -0.06 4800.00 44.08 43.99 0.09 165.75 165.80 -0.05 4825.00 43.97 43.85 0.13 165.77 165.82 -0.06 4850.00 44.03 43.93 0.11 165.80 165.86 -0.06 4875.00 43.70 43.59 0.11 165.78 165.85 -0.06 4900.00 43.52 43.42 0.09 165.82 165.88 -0.07 4925.00 43.66 43.56 0.11 165.86 165.92 -0.06 4950.00 43.79 43.66 0.13 165.89 165.92 -0.03 4975.00 43.89 43.78 0.11 165.87 165.94 -0.07 5000.00 43.79 43.68 0.11 165.93 165.97 -0.04 5025.00 43.61 43.51 0.10 165.92 165.98 -0.05 5050.00 43.56 43.45 0.11 165.98 165.98 -0.00 5075.00 43.50 43.40 0.10 165.90 165.95 -0.06 5100.00 43.53 43.42 0.10 165.96 166.02 -0.07 5125.00 43.36 43.25 0.11 166.00 166.03 -0.04 5150.00 43.29 43.19 0.10 166.04 166.08 -0.04 5175.00 43.42 43.32 0.09 166.02 166.07 -0.04 5200.00 43.43 43.31 0.12 166.07 166.09 -0.02 5225.00 43.58 43.48 0.11 166.08 166.12 -0.03 5250.00 43.59 43.49 0.10 166.10 166.12 -0.02 5275.00 43.54 43.43 0.11 166.14 166.16 -0.02 5300.00 43.38 43.28 0.10 166.14 166.20 -0.06 5325.00 43.40 43.30 0.10 166.15 166.18 -0.03 5350.00 43.44 43.33 0.11 166.18 166.20 -0.02 5375.00 43.19 43.10 0.10 166.26 166.28 -0.02 5400.00 43.30 43.20 0.09 166.24 166.26 -0.02 SURV -Q167 (OPS SUR -MA -003) 19 Nov 03 / Rev 15 Page 8 of 14 AK1210GCM224 i Survey QC - RGS -CT Sp*cation Sheet ! 5425.00 43.40 43.32 0.08 166.27 166.28 -0.01 5450.00 43.42 43.33 0.08 166.29 166.31 -0.01 5475.00 43.42 43.34 0.09 166.29 166.30 -0.01 5500.00 43.14 43.04 0.10 166.27 166.29 -0.02 5525.00 43.09 43.01 0.08 166.30 166.36 -0.05 5550.00 43.16 43.06 0.09 166.37 166.39 -0.02 5575.00 43.06 42.96 0.10 166.40 166.40 0.00 5600.00 43.02 42.93 0.09 166.36 166.39 -0.03 5625.00 43.05 42.94 0.11 166.34 166.32 0.02 5650.00 43.26 43.14 0.12 166.26 166.26 -0.00 5675.00 43.24 43.15 0.09 166.28 166.28 -0.00 5700.00 43.39 43.29 0.10 166.25 166.23 0.02 5725.00 43.45 43.35 0.10 166.27 166.25 0.02 5750.00 43.51 43.41 0.11 166.29 166.27 0.02 5775.00 43.65 43.54 0.11 166.26 166.25 0.01 5800.00 43.43 43.35 0.09 166.33 166.33 0.01 5825.00 43.57 43.48 0.09 166.39 166.37 0.01 5850.00 43.64 43.53 0.11 166.48 166.45 0.03 5875.00 43.58 43.49 0.09 166.66 166.64 0.02 5900.00 43.79 43.69 0.10 166.68 166.67 0.01 5925.00 43.84 43.75 0.09 166.74 166.72 0.01 5950.00 43.79 43.70 0.09 166.84 166.81 0.03 5975.00 43.90 43.81 0.09 166.82 166.78 0.03 6000.00 44.08 43.98 0.09 166.77 166.75 0.02 6025.00 44.12 44.02 0.10 166.72 166.67 0.05 6050.00 44.14 44.06 0.08 166.72 166.69 0.03 6075.00 44.14 44.06 0.09 166.73 166.70 0.03 6100.00 44.17 44.10 0.06 166.91 166.90 0.01 6125.00 44.31 44.20 0.10 167.06 167.04 0.02 6150.00 44.46 44.36 0.10 167.18 167.15 0.02 6175.00 44.49 44.43 0.06 167.30 167.30 0.00 6200.00 44.56 44.47 0.08 167.39 167.38 0.01 6225.00 44.58 44.49 0.08 167.41 167.44 -0.02 6250.00 44.39 44.32 0.07 167.39 167.42 -0.02 6275.00 44.47 44.39 0.08 167.36 167.38 -0.02 6300.00 44.33 44.25 0.08 167.36 167.35 0.01 6325.00 44.48 44.39 0.10 167.36 167.33 0.03 6350.00 44.51 44.41 0.10 167.36 167.31 0.05 6375.00 44.28 44.20 0.08 167.32 167.28 0.04 6400.00 44.17 44.11 0.07 167.30 167.29 0.02 6425.00 44.09 44.02 0.06 167.30 167.30 0.01 6450.00 44.29 44.22 0.07 167.35 167.32 0.03 6475.00 44.29 44.23 0.06 167.28 167.27 0.01 6500.00 44.25 44.16 0.10 167.33 167.31 0.02 SURV -Q167 (OPS SUR -MA -003) 19`" Nov 03 / Rev 15 Page 9 of 14 AK1210GCM224 T Survey QC - RGS -CT Sp*cation Sheet /'of data 6525.00 44.26 44.17 0.09 167.26 167.23 0.03 6550.00 44.40 44.30 0.10 167.30 167.29 0.01 6575.00 44.39 44.30 0.09 167.40 167.40 0.00 6600.00 44.44 44.37 0.07 167.39 167.40 -0.01 6625.00 44.48 44.43 0.05 167.44 167.40 0.04 6650.00 44.55 44.47 0.07 167.41 167.38 0.03 6675.00 44.60 44.50 0.10 167.42 167.38 0.04 6700.00 44.74 44.65 0.09 167.47 167.45 0.03 6725.00 44.74 44.66 0.08 167.45 167.42 0.03 6750.00 44.84 44.79 0.05 167.48 167.45 0.04 6775.00 44.86 44.79 0.08 167.51 167.47 0.04 6800.00 44.83 44.77 0.07 167.53 167.50 0.03 6825.00 44.97 44.90 0.07 167.49 167.47 0.02 6850.00 44.95 44.88 0.07 167.48 167.46 0.03 6875.00 45.00 44.92 0.09 167.48 167.44 0.04 6900.00 45.26 45.19 0.07 167.49 167.47 0.03 6925.00 45.05 44.96 0.08 167.43 167.40 0.03 6950.00 45.13 45.07 0.06 167.41 167.39 0.02 6975.00 45.22 45.16 0.06 167.39 167.34 0.05 7000.00 45.41 45.36 0.05 167.33 167.30 0.03 7025.00 45.70 45.63 0.06 167.40 167.36 0.04 7050.00 45.71 45.62 0.09 167.42 167.37 0.05 7075.00 45.90 45.83 0.07 167.39 167.34 0.05 7100.00 45.81 45.71 0.10 167.36 167.30 0.06 7125.00 45.85 45.79 0.06 167.34 167.28 0.05 7150.00 45.99 45.94 0.06 167.35 167.29 0.06 7175.00 45.83 45.76 0.07 167.40 167.32 0.08 7200.00 46.09 46.03 0.06 167.36 167.31 0.05 7225.00 46.27 46.20 0.06 167.35 167.29 0.05 7250.00 46.29 46.23 0.06 167.26 167.19 0.07 7275.00 46.24 46.17 0.07 167.21 167.14 0.06 7300.00 46.20 46.13 0.07 167.10 167.07 0.03 7325.00 46.30 46.22 0.08 167.06 167.03 0.03 7350.00 46.25 46.18 0.06 167.00 166.93 0.06 7375.00 46.14 46.06 0.08 166.90 166.84 0.07 7400.00 46.12 46.07 0.05 166.88 166.83 0.05 7425.00 45.90 45.84 0.07 166.89 166.85 0.04 7450.00 45.80 45.74 0.06 166.93 166.88 0.05 7475.00 45.95 45.85 0.09 166.90 166.85 0.05 7500.00 45.90 45.85 0.05 166.91 166.82 0.09 7525.00 45.74 45.68 0.06 166.90 166.83 0.08 7550.00 45.72 45.63 0.08 166.90 166.84 0.05 7575.00 45.97 45.90 0.07 166.92 166.88 0.05 7600.00 45.78 45.79 -0.00 166.86 166.79 0.07 SURV -Q167 (OPS SUR-MA -003) 19` Nov 03 / Rev 15 Page 10 of 14 AK1210GO1224 r Survey QC - RGS -CT Sp•cation Sheet • gym/data r 7625.00 45.83 45.73 0.10 166.86 166.83 0.03 7650.00 46.02 45.97 0.05 166.89 166.81 0.08 7675.00 46.04 45.98 0.06 166.92 166.85 0.08 7700.00 46.09 46.00 0.08 166.96 166.89 0.07 7725.00 46.22 46.13 0.09 166.94 166.89 0.05 7750.00 46.25 46.18 0.07 166.91 166.86 0.05 7775.00 46.26 46.21 0.05 166.95 166.88 0.07 7800.00 45.94 45.87 0.07 166.96 166.88 0.08 7825.00 46.03 45.96 0.07 166.97 166.91 0.06 7850.00 46.17 46.10 0.07 167.01 166.96 0.04 7875.00 46.19 46.12 0.06 167.00 166.93 0.07 7900.00 46.27 46.22 0.04 167.05 166.97 0.07 7925.00 46.25 46.17 0.08 167.08 167.04 0.04 7950.00 46.32 46.25 0.07 167.10 167.06 0.04 7975.00 46.37 46.30 0.07 167.11 167.07 0.04 8000.00 46.41 46.34 0.06 167.22 167.13 0.09 8025.00 46.45 46.42 0.04 167.25 167.12 0.13 8050.00 46.24 46.19 0.05 167.30 167.21 0.08 8075.00 46.31 46.24 0.07 167.33 167.27 0.06 8100.00 46.24 46.18 0.06 167.39 167.32 0.07 8125.00 46.01 45.94 0.07 167.43 167.40 0.03 8150.00 46.09 46.04 0.05 167.48 167.40 0.07 8175.00 45.95 45.90 0.04 167.45 167.27 0.18 8200.00 45.75 45.71 0.04 167.42 167.29 0.12 8225.00 45.69 45.67 0.02 167.42 167.32 0.10 8250.00 45.59 45.54 0.04 167.44 167.35 0.10 8275.00 45.65 45.62 0.03 167.47 167.31 0.15 8300.00 45.67 45.64 0.04 167.44 167.28 0.16 8325.00 45.47 45.47 0.00 167.39 167.24 0.14 8350.00 45.15 45.12 0.04 167.31 167.15 0.16 8375.00 45.13 45.10 0.03 167.25 167.10 0.15 8400.00 45.05 45.03 0.02 167.21 167.06 0.14 8425.00 44.88 44.86 0.02 167.18 167.07 0.11 8450.00 44.83 44.80 0.03 167.03 166.88 0.15 8475.00 44.24 44.22 0.02 165.86 165.69 0.17 8500.00 43.21 43.18 0.03 163.77 163.62 0.15 8525.00 42.07 42.05 0.02 162.09 161.94 0.14 8550.00 40.69 40.68 0.00 159.88 159.74 0.14 8575.00 39.49 39.49 0.01 157.71 157.60 0.12 8600.00 38.76 38.76 0.00 156.31 156.19 0.12 8625.00 37.75 37.77 -0.02 155.29 155.20 0.09 8650.00 36.61 36.61 0.00 154.28 154.17 0.12 8675.00 34.91 34.91 -0.00 152.89 152.76 0.13 8700.00 33.75 33.78 -0.03 151.94 151.80 0.13 SURV -Q167 (OPS SUR -MA -003) 19`" Nov 03 / Rev 15 Page 11 of 14 AK1210GCM224 Survey QC - RGS -CT Sp,fication Sheet gym/data 8725.00 32.46 32.49 -0.02 151.09 150.96 0.14 8750.00 30.32 30.32 -0.01 149.79 149.68 0.11 8775.00 28.67 28.70 -0.02 148.75 148.70 0.05 8800.00 27.37 27.41 -0.03 148.36 148.30 0.05 8825.00 25.97 26.03 -0.06 148.94 148.88 0.06 8850.00 24.83 24.87 -0.04 149.39 149.41 -0.03 8875.00 24.23 24.28 -0.05 149.36 149.43 -0.07 8900.00 23.89 23.96 -0.07 149.26 149.29 -0.03 8925.00 22.67 22.76 -0.09 149.30 149.37 -0.08 8950.00 21.61 21.70 -0.09 149.57 149.69 -0.12 8975.00 21.15 21.28 -0.13 149.88 149.97 -0.09 9000.00 20.41 20.57 -0.16 150.66 150.72 -0.06 9025.00 19.44 19.55 -0.12 151.41 151.49 -0.09 9050.00 18.30 18.47 -0.17 151.58 151.58 -0.00 9075.00 18.20 18.25 -0.04 151.40 151.36 0.04 9100.00 17.47 17.57 -0.10 151.39 151.38 0.00 9125.00 15.98 16.16 -0.17 151.71 151.62 0.09 9150.00 15.47 15.58 -0.11 151.75 151.72 0.02 9175.00 15.07 15.01 0.05 151.95 151.17 0.78 9200.00 14.79 14.87 -0.09 151.41 151.06 0.35 9225.00 14.74 14.67 0.06 151.58 150.96 0.62 9250.00 14.42 14.54 -0.12 151.61 150.67 0.94 9275.00 14.43 14.46 -0.03 151.91 150.78 1.13 9300.00 13.14 13.22 -0.08 153.03 152.35 0.69 9325.00 11.88 12.00 -0.12 154.40 153.94 0.46 9350.00 11.04 11.07 -0.02 156.99 155.41 1.58 9375.00 10.69 10.71 -0.02 155.72 155.15 0.57 9400.00 10.50 10.65 -0.15 156.75 154.13 2.62 9425.00 10.48 10.34 0.13 155.68 154.81 0.87 9450.00 10.18 10.44 -0.26 156.21 154.29 1.92 9475.00 9.90 9.90 0.01 157.18 154.99 2.19 9500.00 9.99 9.91 0.09 157.40 155.77 1.63 9525.00 9.98 10.00 -0.02 157.24 155.14 2.10 9550.00 9.95 9.84 0.11 158.55 155.77 2.78 9575.00 10.19 10.11 0.08 158.79 156.02 2.76 9600.00 10.84 10.80 0.04 160.38 158.29 2.09 9625.00 11.25 11.36 -0.11 160.54 159.15 1.40 9650.00 11.53 11.58 -0.05 160.67 159.78 0.89 9675.00 11.27 11.22 0.06 162.37 160.82 1.55 9700.00 11.02 11.13 -0.11 162.16 161.40 0.77 9725.00 10.79 10.93 -0.14 162.80 161.49 1.31 9750.00 10.81 10.87 -0.06 162.45 160.69 1.76 9775.00 11.08 11.03 0.05 161.63 159.70 1.93 9800.00 11.29 11.14 0.14 159.88 158.07 1.81 SURV -Q167 (OPS SUR -MA -003) 19 Nov 03 / Rev 15 Page 12 of 14 AK1210GCM224 Survey QC - RGS -CT Spftcation Sheet f gym/data 9825.00 11.51 11.37 0.14 158.94 157.39 1.55 9850.00 11.55 11.46 0.08 159.04 157.40 1.64 9875.00 11.44 11.47 -0.04 159.61 157.79 1.81 9900.00 11.23 11.38 -0.15 159.64 158.10 1.54 9925.00 11.12 11.07 0.05 159.65 158.84 0.81 9950.00 10.80 10.90 -0.10 160.72 159.26 1.45 9975.00 10.95 10.84 0.11 161.69 160.16 1.54 10000.00 10.85 10.94 -0.09 161.61 160.79 0.82 10025.00 10.86 10.95 -0.09 162.05 161.25 0.80 10050.00 11.14 11.22 -0.09 162.15 161.41 0.74 10075.00 11.47 11.63 -0.16 162.44 161.69 0.75 10100.00 11.64 11.84 -0.20 162.95 162.18 0.78 10125.00 11.68 11.89 -0.20 163.83 163.13 0.69 10150.00 11.73 11.89 -0.16 164.73 164.17 0.56 10175.00 11.64 11.65 -0.00 166.73 166.05 0.68 10200.00 11.70 11.60 0.09 167.90 166.52 1.37 10225.00 11.76 11.78 -0.02 168.36 166.77 1.59 10250.00 12.59 12.58 0.01 166.57 165.78 0.79 10275.00 14.23 14.07 0.16 164.57 162.81 1.76 10300.00 15.69 15.44 0.25 161.77 160.49 1.28 10325.00 16.86 16.80 0.06 159.55 158.32 1.23 10350.00 18.52 18.59 -0.07 158.44 157.27 1.17 10375.00 19.77 19.91 -0.14 157.10 156.51 0.59 10400.00 21.84 21.90 -0.06 158.09 156.94 1.15 10425.00 23.74 23.79 -0.05 159.02 157.90 1.13 10450.00 25.72 25.78 -0.05 158.82 157.79 1.03 10475.00 27.79 27.86 -0.06 157.85 156.92 0.93 10500.00 29.28 29.35 -0.07 157.19 156.29 0.90 10525.00 30.87 30.95 -0.08 156.43 155.61 0.81 10550.00 32.41 32.49 -0.07 155.51 154.74 0.77 10575.00 34.05 34.13 -0.07 154.42 153.71 0.71 10600.00 35.68 35.76 -0.08 153.34 152.69 0.65 10625.00 37.30 37.37 -0.07 152.60 152.03 0.57 10650.00 38.93 39.02 -0.09 153.31 152.75 0.56 10675.00 40.87 40.97 -0.09 155.21 154.70 0.51 10700.00 42.69 42.78 -0.10 157.72 157.28 0.44 10725.00 44.96 45.08 -0.12 158.73 158.37 0.36 10750.00 47.70 47.83 -0.13 159.65 159.31 0.33 10775.00 50.56 50.67 -0.11 160.78 160.53 0.25 10800.00 53.51 53.60 -0.08 162.49 162.28 0.21 10825.00 55.20 55.27 -0.08 164.23 164.11 0.12 10850.00 57.14 57.19 -0.05 165.57 165.47 0.10 10875.00 59.10 59.13 -0.02 165.55 165.50 0.04 Average I 0.0379 I I 0.0457 1 SURV -Q167 (OPS SUR -MA -003) 19 Nov 03 / Rev 15 Page 13 of 14 AK1210GCM224 • Survey QC - RGS -CT SpeZffication Sheet gyro/clata Standard Deviation 0.0832 0.2549 Tolerance for both the Average and the Standard Casing 0.3 Casing 0.5 Deviation Drillpipe 0.3 Drillpipe 0.75° * Inclination and Azimuth interpolated to same depths as shown. SURV -Q167 (OPS SUR -MA -003) 19 Nov 03 / Rev 15 Page 14 of 14 AK1210GCM224 L STATE OF ALASKA ~, ALASKA AND GAS CONSERVATION COMMISS~ REPORT OF SUNDRY WELL OPERATIONS MAY ~ ~ 201(` 1. Operations Abandon ^ Repair Well ^ Plug Perforations ^ Stimulate ^ ~~yO~t~,~rg ~gOjSSIUi' ~ Performed: Alter Casing ^ Pull Tubing ^ Perforate New Pool ^ Waiver ^ Time' E"Xf~SSft'hf~ S' Change Approved Program ^ Operat. Shutdown ^ Perforate ^ Re-enter Suspended Well ~tOftl46 2. Operator BP Exploration (Alaska), Inc. 4. Well Class Before Work: . Permit to Drill Number: Name: Development ^~ Exploratory ^ 200-1420 3. Address: P.O. Box 196612 Stratigraphic^ Service ^ API Number: Anchorage, AK 99519-6612 50-029-21763-02-00 8. Property Designation (Lease Number) : t 9. Well Name and Number: ADLO-028304 PBU E-236 10. Field/Pool(s): PRUDHOE BAY FIELD / PRUDHOE OIL POOL 11. Present Well Condition Summary: Total Depth measured 12706 feet Plugs (measured) 11200' 5/10/10 feet true vertical 8918.4 feet Junk (measured) None feet Effective Depth measured 12664 feet Packer (measured) 10264 10920 true vertical 8922 feet (true vertical) 8321 8831 Casing Length Size MD TVD Burst Collapse Structural Conductor 110 20" surface - 110 surface - 110 Surface 2753 13-3/8" 72# I-80 surface - 2973 surface - 2649 4930 2670 Intermediate 8431 9-5/8" 47# I-80 surface - 8467 surface - 6636 6870 4760 Liner 2733 7" 26# I-80 8316 - 11049 surface - 8877 7240 5410 Liner 1768 2-3/8" 4.6# I-80 10930 - 12698 8836 - 8919 Casing Patch 1422 7-5/8" 29.7# I-80 2983 - 4405 2785 - 3735 6890 4790 Perforation depth: Measured depth: SEE ATTACHED - _ True Vertical depth: _ _ _ _ - Tubing: (size, grade, measured and true vertical depth) 4-1/2" 12.6# 13CR80 SURFACE - 10363 SURFACE - 8416 3-1 /2" 9.2# L-80 10398 - 10966 8829 - 8851 Packers and SSSV (type, measured and true vertical depth) 7"X4-1/2" BAKER S-3 PKR 10264 8321 7"X3-1/2" BAKER FB-1 PKR 10920 8831 12. Stimulation or cement squeeze summary: Intervals treated (measured): .~ ~. ..~~~u __ Treatment descriptions including volumes used and final pressure: 13. Representative Daily Average Production or Injection Data Oil-Bbl Gas-Mcf Water-Bbl Casing Pressure Tubing pressure Prior to well operation: Subsequent to operation: 14. Attachments: 1 . Well Class after work: Copies of Logs and Surveys Run Exploratory^ Development 0 Service ^ Daily Report of Well Operations X '4rZ. Well Status after work: Oil ~ Gas WDSPL GSTOR ^ WAG ^ GINJ ^ WINJ ^ SPLUG ^ 17. 1 hereby certify that the foregoing is true and correct to the best of my knowledge. Sundry Number or N/A if C.O. Exempt: N/A Contact Gary Preble Printed Name Gary Prebl Title Data Management Engineer Signature Phone 564-4944 Date 5/13/2010 7~ D E-23B 200-142 • • P ERF ATTACtimtN i th To d De T Tvd Depth Base Sw Name Operation Date Pert Operation Code Meas Depth Top Meas Depth Base p p v 01 38 931 8 E-23B 12/11100 PER 12,000. 170 12 12,075. 12,340. 8,937. 8,927.13 . , 8,926.8 E-236 12/11100 PER . , 380 12 12,488. 8,924.91 8,926.43 E-23B 12/11/00 PER . , 568 12 12,662. 8,927.88 8,922.65 E-23B 12111/00 PER . , 950 10 12,664. 8,844.85 8,922.48 E-23B 6121102 714102 FIL APF . , 11,260. 11,580. 8,921.19 8,924.21 E-23B E-23B 7/4/02 APF 11,620. 11,680. 8,927.22 25 8 8,932.41 65 922 8 E-23B 4122/04 BPS 10,935. 935 10 12,662. 12,662. . 8,83 8,838.25 . , 8,922.65 E-23B 9124/04 BPP . , 864 10 11,260. 8,803.68 8,921.19 E-23B 1013/07 12131/07 BPS BPS . , 10,864. 11,260. 8,803.68 8,921.19 E-23B E-23B 6124108 BPP 10,864. 10,865. 662 2 8,803.68 25 838 8 8,804.2 922.65 8 E-23B 6/24/08 BPS 10,935. 935 10 . 1 , 12,662. . , 8,838.25 , 8,922.65 E-23B 7125108 5110/10 BPP APF . , 11,150. 11,170. 8,909.61 8,915.23 E-23B E-23B 5/10110 BPS 11,200. 12,662. 8,920.28 09 8,922.25 77 898 8 E-23B 5/11/10 APF 11,110. 120 11 11,120. 11,140. 8,895. 8,898.77 . , 8,906.25 E-236 5/11/10 APF / . , AB ABANDONED PER PERF APF ADD PERF RPF REPERF BPP BRIDGE PLUG PULLED SL SLOTTED LINER BPS BRIDGE PLUG SET SPR SAND PLUG REMOVED FCO FILL CLEAN OUT SPS SAND PLUG SET L FILL SQF SQUEEZE FAILED FI MIR MECHANICAL ISOLATED REMOVED SQZ SQUEEZE MIS MECHANICAL ISOLATED STC STRADDLE PACK, CLOSED MLK MECHANICAL LEAK STO STRADDLE PACK, OPEN OH OPEN HOLE • E-23B DESCRIPTION OF WORK COMPLETED NRWO OPERATIONS EVENT SUMMARY ACTIVITYDATE E SUMMARY 5/9/2010 CTU #5 w/ 1.75" CT: Job Scope: CIBP/Adperf: MIRU CT Unit. Drift to 12300' ~ ` ctmd with 1.80" JSN. MU and RIH with SLB memory GR/CCL for coil flag. ***Job ~Co~ntinued on 10 Marta 1__~_ _...~_ _ _.___r_._.~_ ~ ~ _._~ [ 5/10/2010~CTlJ #5 w/ 1.75" CT: Job Scope: CIBP/Adperf: Continued from 09 May 10 WSR. t I Log memory GR/CCL from 12000' to 10100' ctmd for coil flag. POOH confirm good Jdata. MU, RIH and set 2 3/8" MAP Oil Tools CIBP at 11200' corr. MU and RIH with I perforating run #1. Perforate from 11150' to 11170' corr with 20' of 1.56" 2006PJ 6 spf TCP guns. Perforating depths corrected to top of CIBP at 11,200' corr. *""Job Continued on 11 May 10*** ~ 5/11/2010jCTU #5 w/ 1.75" CT: Job Scope: CIBP/Adperf: Continued from 10 May 10 WSR. i MU and RIH with perforating run #2. Perforate,lom 11120' to 11140' corr with 20' E=of 1.56" 2006PJ 6 spf TCP guns. MU and RIH with perforating run #3. Perforate from 11110' to 11120' with 10' Of 1.56" 2006PJ 6 spf Guns POOH B/D tools. Perform weekly BOP test. RDMO Notify DSO well is ready to pop ''**Job Complete *"* FLUIDS PUMPED BBLS 343 50/50 MEOH 499 XS KCL W/SL 842 Total TREE = MCEV OY WELLHE1aD'- McEVOY ACTUATOR = AXELSON KB. ELEV = 68.05' BF. ELEV = 31.85' KOP = 1597' Max Angle = 96° @ 12671' Datum MD = 11003' Datum TV D = 8800' SS 20" CONDUCTOR, ID =~ ~ 13-318" CSG, 72#, L-80 BTRS, ID = 12.347" 2972' S TES: WELLANGLE> 70° @ 11000'. E ~~ ~ ~ CHROME TUBING LBORE NOT SHOWN *** 4-1 /2" 7-5/8" SCAB LNR, 29.7#, L-80 STL, 4405' .0459 bpf, ID = 6.875" TOP OF 7" LNR 8316' Minimum ID =1.995" @ 10938' TOP OF 2-3/$" LINER 9-518" CSG, 47#, L-80 BTRS, .0733 bpf, ID = 8.681" 8467' 2215' I-I4-1i2" HES X NIP, ID =3.813" 2983` I-i 9-5/8" X 7-518" BKR LTP PKR, ID = 6.875" GAS LIFT MANDRELS ST MD TVD DEV TYPE VLV LATCH PORT DATE 2 1 4071 7575 3513 6011 51 45 KBG-2 KBG-2 DOME SO RK RK 16 20 07/25/08 07/25(08 8316' -{ 9-5/8" X 7" LTP w lHGR, ID = ?? 9-518" MILLOUT WINDOW (E-23Aj 8467" - 8472' 10243' 4-1/2" HES X NIP, ID = 3.813" 10264` I-i 7" X 4-1 i2" BKR S-3 PKR ID = 3.875" 10287' I-14-1/2"HES X NIP, ID = 3.813" 10350' I-14-112" HES XN NIP, ID = 3.725" 4-1/2" TBG, 12.6#, 13CR-80 VAM TOP, 10363` .0152 bpf, ID = 3.958" 10363' 4-112" WLEG, ID = 3.95$" I7" X 3-112" ENTRY GUIDE, ID = 3.00" (01/15/08) 3-112" TBG STUB TOP 2-3/8" LNR - 10920' -j7" X 4-1/2' BKR FB-1 PKR, ID = 4.00" 10938' 4" X 3-112" XO, ID = 2.992"~ 10938' 2-3/8" DEPLOY SLV, ID= 1.995" 3-1 /2" PKR SWS NIP, ID = 2.75" 3-1/2" TBG, 9.2#, L-80 NSCT, .0087 bpf, ID = 2.992" PERFORATION SUMMARY REF LOG: SP-SUN MWD 10!28!93 A NGLE AT TOP PERF: 91 ° @ 11260' Note: Refer to Production DB for historical perf data SIZE SPF INTERVAL Opn/Sqz DATE 1-9116" 6 11260 - 11580 O 07/03!02 1-9/16" 6 11620 - 11680 O 07/03!02 1-11116" 4 12000 - 12075 O 12/12/00 1-11!16" 4 12170 - 12340 O 12/12100 1-11116" 4 12380 - 12488 O 12112/00 1-11(16" 4 12568 - 12662 O 12!12/00 7" LNR 26#, L-80, .0383 bpf, ID = 6.276" 10954' 3-1/2" PKR SWN XN NIP, ID = 2.635" BEHIND _,,,,,,,,,,,,,,,,, LINER 10966' -~ 3-1 /2" WLEG, ID = 2.992" 10960' ELMD TT LOGGED 01119194 r~ Ct~Jp~r ll~L~ - \ 7' MILLOUT WINDOW (E 238)11049' - 11053' `~ _ 1 PBTD TD ~-{ 12706' (2- 3/8" LNR, 4.6#, 1-80 FL4S, .0039 bpf, ID = 1.995" I DATE REV BY COMMEMS DATE REV BY COMMENTS 12/09/87 AUK 1 ORIGINAL COMPLETION 10/22108 PJC DRLG DRAFT CORRECTIONS 11!08/93 ~ SIDETRACK (E-23A) 12!24193 D74 7-518" SCAB LNR {E-23A) 12112/00 N-CDR1 CTD SIDETRACK (E-238) 07/17/08 N4ES RWO 09/10/08 MD/JMD DRLG DRAFT CORRECTIONS PRUDHOE BAY UNIT WELL: E 236 PERMIT No: 2001420 API No: 50-029-21763-02 SEC 6, T11 N, R14E, 1820' FNL & 501' FEL BP Exploration (Alaska) .. ~~ ,~ STATE OF ALASKA 9-%~,D~ ~• A~ OIL AND GAS CONSERVATION COM~ION REPORT OF SUNDRY WELL OPERATIONS ;., _~:~ ~rv{;~ 1. Operations Performed: ^ Abandon ®Repair Well r ^ Plug Perforations ^ Stimulate ^ Re-Enter Suspended Well ^ Alter Casing ®Pull Tubing ^ Perforate New Pool ^ Waiver ^ Other ^ Change Approved Program ^ Operation Shutdown ^ Perforate ^ Time Extension 2. Operator Name: 4. Well Class Before Work: 5. Permit To Drill Number: BP Exploration (Alaska) Inc. , ®Development ^ Exploratory 200-142 3. Address: ^ Service ^ Stratigraphic 6. APl Number: P.O. Box 196612, Anchorage, Alaska 99519-6612 50-029-21763-02-00-- 7. KB Elevation (ft): 64 9, 9. Well Name and Number: PBU E-23B - 8. Property Designation: 10. Field /Pool(s): ADL 028304 - Prudhoe Bay Field / Prudhoe Bay Pool 11. Present well condition summary Total depth: measured 12706 ' feet true vertical 8918 -feet Plugs (measured) None Effective depth: measured 12664 - feet Junk (measured) None true vertical 8922 ~ feet Casing Length Size MD TVD Burst Collapse Structural Conductor 110' 20" 110' 110' Surface 2753' 13-3/8" Intermediate 431' 9 5/8" ~ 2793' 2649' 3~ w ~ 4 T ' 4930 2670 6870 4760 - 8 Production or~c ou 8 6 6636 ~.~~ Liner 2733 7" 8316' - 11049' 6528' - 8877' 7240 5410 Liner 1768' 2-3/8" 10930' - 12698' 8836' - 8919' Casing Patch 1422' 7-5/8" 2983' - 4405' 2785' - 3735' 6890 4790 Perforation Depth MD (ft): 11260' - 12662' Perforation Depth TVD (ft): 8921' - 8923' 4-1/2", 12.6# & 13Cr80 & 10363' & Tubing Size (size, grade, and measured depth): 3-v2" 92# L-80 ' Packers and SSSV (type and measured depth): 7" x 4-1/2" Baker'S-3' packer; 10264'; 7" x 3-1/2" Baker'FB-1' packer 10920' 12. Stimulation or cement squeeze summary: Intervals treated (measured): ~~~~~ AUC ~ ~ 2D08 Treatment description including volumes used and fin al pressure: 13. Re resentative Dail Avera a Production or In'ection Data Oil-Bbl Gas-Mcf Water-Bbl Casin Pressure Tubin Pressure Prior to well operation: Subsequent to operation: 488 26,312 48 1,140 900 14. Attachments: ^ Copies of Logs and Surveys run 15. Well Class after work: ^ Exploratory ®Development ^ Service ® Daily Report of Well Operations 16. Well Status after work: ® Well Schematic Diagram ®Oil ^ Gas ^ WAG ^ GINJ ^ WINJ ^ WDSPL 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. Sundry Number or N/A if C.O. Exempt: Contact Mackie Derrick, 564-5891 N/A Printed Name Terrie Hubble Title Drilling Technologist nn Gi Prepared By Name/Number: g 0 Signature Phone 564-4628 Date vr Terrie Hubble, 564-4628 Form 10-404 Revised 04/2006 Submit Original Only Digital Well File Page 1 of Z ~ ~ Well: E-23 Well History Well Date Summary E-236 6/23/2008 ***WELL SHUT IN ON ARRIVAL*** (pre-rwo) RIH W/3 1/2" GR AND3 1/2" WRP PULLING TOOL TO 8166' SLM, JAR DOWN TO EQUALIZE WRP. (LOST 200 PSI) *** CONTINUED ON 6-24-OS WSR*** E-23B 6/24/2008 T/I/0=870/940/0 Temp=S/I Assist slickline CMIT TxIA PASSED to 3000 psi. Pumped 3 bbls neat methanol, 5.9 bbls crude to reach test pressure. 1 st 15 min lost T/I 50/70 psi, 2nd 15 min lost T/I 20/30 psi for a total loss of T/I 70/100 psi in 30 min. Bled down pressures (8 bbls) FWHP's T/I/0=780/720/Vac Annulus casing valves tagged and left open to gauges DSO notified of valve positions upon departure. Swab= Closed, Wing= Closed, SSV= Open, Master= Open, IA= Open, OA= Open E-236 6/24/2008 ***CONTINUED FROM 6-23-08*** (pre-rwo) PULL 3 1/2" WRP FROM 8166' SLM. ALL ELEMENTS RECOVERED. TAG fLGHTLYI WRP ~ 10886' SLM, 10906' MD, + 10' CORR. SAMPLE BAILER EMPTY ***WELL S/I ON DEPARTURE*** (OPERATOR NOTIFIED ) E-23B 6/25/2008 "**WELL SHUT IN ON ARRIVAL*** INITIAL WHP 460/540/0 RIG UP E-LINE FOR POWER JET CUT, CUT DEPTH 10856', RIH WITH HEAD, CCL, WEIGHT BAR X 2, SHOCK SUB, 2.50" POWER JET CUTTER ***JOB CONTINUED ON 26-JUNE-2008*** E-236 6/25/2008 T/I/O/ = 740/800/0 Temp = SA GMIT Tx !A PASSED to 3500 r~.Si on 2nd attempt (RWO) Pumped 9.1 bbls crude down Tbg to reach test pressure. T/I lost 0/0 in 30 mins. Bled pressures to finals. Bled back - 12 bbls. FWHP's 500/580/0 Annulus casing valves tagged and left open to gauges, pad operator notified. E-236 6/26/2008 ***JOB CONTINUED FROM 25-JUNE-2008*** CUT DEPTH 10856'., POOH WITH HEAD, CCL, WEIGHT BAR X 2, SHOCK SUB, 2.50" POWER JET CUTTER FINAL WHPS = 450/500/0. SWAB-CLOSED, MASTER-OPEN, IA-OPEN, OA-OPEN ***JOB COMPLETE WELL LEFT SHUT IN*** E-23B 6/26/2008 T/I/O = 520/520NAC. Temp = SI. Bleed WHPs to 0 psi (RWO prep). No AL line. TBG FL @ surface. IA FL near surface. 81ed TBGP from 520 psi to 200 psi in 50 min into BT (9 bbl). Bled IAP from 520 psi to 460 psi in 3 hours 10 min (4 bbl/gas). Vac'ed out BT. Bled IAP from 460 psi to 400 psi in 1 hour 30 min. Monitored pressures for 60 min. TBGP increased to 350 psi. IAP increased to 460 psi, OAP unchanged. Final WHPS = 350/460NAC. E-23B 6/27/2008 T/I/0=330/460/ VAC. Temp= SI. Bleed WHPs to 0 psi (RWO prep). No A/L. TP decreased 20 psi, IAP & OAP unchanged overnight. TBG FL C~3 surface. IA FL near surface. Bled IAP to a tank from 460 psi to 360 psi in 2 hrs 30 mins (9 bbls & gas). TP also decreased during IA bleed, from 330 psi to 140 psi. SI IA bleed & monitored for 15 mins. TP &IAP both increased 20 psi. Final WHPs 160/380NAC. E-23B 6/27/2008 T/I/0= 425/540/vac Circ Out (Pre RWO) Pumped down Tbg up IA to flowline with 5 bbl neat spear followed by 816 bbls 9.3# NaCI brine. ***continued on 6/28/08*** E-236 6/28/2008 ***continued from 6/27/08*** Circ well, MIT OA PASSED to 2000 psi..Pumped 234 bbls (Total of 1050 bbls) of 9.3 ppg NaCI brine down Tbg taking returns up IA into flowline. Freeze protected well with 8 bbls diesel. Pumped a total of 2,5 bbls of crude down OA to reach test pressure for MITOA. OA lost 40 psi in 1st 15 min and 40 psi in 2nd 15 mins, ran test out an additional 15 mins, OA lost 20 psi in 3rd 15 min for a total loss of 100 psi in 45 mins. Bled pressure back. Called off job, DHD to bleed WHP's to 0 psi. Final WHPs= 1420/1580/180 Annulus casing valves tagged and left open upon departure. E-236 6/28/2008 T/I/0=1640/1620/200. Temp SI. Bleed WHP's to 0 psi (RWO prep). No AL line. TBG FL ~ surface. IA FL ~ surface. OA FL ~ surface. Bled IAP from 1620 psi to 180 psi to production in 30 min. TP tracked during IA bleed 1640 psi to 180 psi. OAP decreased 50 psi from 200 psi to 150 psi during IA bleed. Bled IAP from 180 psi to 0 psi in 30 min to a bleed trailer. TP tracked 180 psi to 0 psi during IA bleed. OAP decreased 100 psi during IA bleed. Bled OAP from 50 psi to 0 psi to a bleed trailer in 20 min. Monitored for 30 min. No change. Final WHP's = 0/0/0. E-236 6/29/2008 T/IA/OA= SSV/0/0 Temp=cold PPPOT-T (PASS) PPPOT- IC (PASS) (Pre RWO) PPPOT-T Bleed pressure to 0 psi through SBS, removed 1"NPT plug, and internal check, installed 1" Alemite. RU HP bleed tool and flushed THA void until clean returns achieved. Pressured void to 5000 psi for 30 minute test, 5000/ 15 minutes, 4950/ 30 minutes. Bleed THA void to 0 psi, RD test equipment re- install Alemite cap. Cycle and torqued all LDS "Standard style" all moved with no problems. PPPOT-IC Verified 0 psi through SBS, removed 1"NPT plug, and internal check, installed 1"Alemite. RU http://digitalwellfile.bpweb.bp.com/WIInfo/Reports/ReportViewer.aspx 8/13/2008 Digital Well File • ~ Page 2 of 2 E-23B 6/30/2008 Print Date: 8/13/2008 HP bleed tool onto IC void, flushed void until clean returns achieved. Pressured void to 3000 psi, test pressure fell to 2000 psi in 5 minutes, RU elephant gun plastic packed 2.5 J-sticks of (M615660) into packing port until ribbon of air free plastic achieved, pressured to 5200 psi. Second test 3500/ 15 minutes, 3500/ 30 minutes. Bleed down IC test void to 0 psi, RD all test equipment, re-installed Alemite cap Cycle and torque LDS "Standard style" all moved with no problems. *** INTERNAL CHECKS REMOVED FROM THA & IC VOID *** T/I/0=0/0/0. Set 3" CIW H BPV thru tree. Pre Nabors 4ES Page 1 of 1 http://digitalwellfile.bpweb.bp.com/WIInfo/Reports/ReportViewer.aspx 8/13/2008 • • BP AMERICA Page 1 of 7 Operations Summary Report Legal Well Name: E-23 Common Well Name: E-23 Spud Date: 11/19/1987 Event Name: WORKOVER Start: 7/1/2008 End: 7/11/2008 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 7/17/2008 Rig Name: NABOBS 4ES Rig Number: Date From - To Hours Task Code NPT Phase Description of Operations 7/4/2008 13:00 - 20:30 7.50 MOB P PRE Move Nabors 4es and equipment from N-Pad to E-Pad. 20:30 - 00:00 3.50 RIGU P PRE Spotted tiger tank. Laid Herculite and rig mats. Moved in, spotted and bermed rig modules. Spotted shop. 7/5/2008 00:00 - 02:00 2.00 RIGU P PRE Raised and scoped derrick. Accepted rig at 02:00 hrs 02:00 - 04:30 I 2.501 KILL I P 04:30 - 08:00 I 3.501 KILL I P 08:00 - 09:45 1.751 WHSUR P 09:45 - 10:00 0.25 WHSUR P 10:00 - 11:00 1.00 WHSUR P 11:00 - 12:30 1.50 BOPSU P 12:30 - 18:00 5.50 BOPSU P 18:00-19:00 ~ 1.OO~WHSUR~P 19:00 - 20:00 I 1.001 PULL I P 20:00 - 23:00 I 3.001 PULL I P 23:00 - 00:00 1.001 PULL P 7/6/2008 100:00 - 06:00 I 6.001 PULL I P 06:00 - 06:30 0.50 PULL P 06:30 - 09:30 3.00 PULL P 09:30 - 10:30 1.00 PULL P 10:30 - 12:00 1.50 PULL P 12:00 - 13:00 I 1.00 I W HSU R I P 13:00 - 13:30 0.50 WHSUR P 13:30 - 14:00 0.50 WHSUR P 14:00 - 14:30 0.50 WHSUR P 14:30 - 15:30 1.00 PULL P 15:30 - 18:00 2.50 FISH P DECOMP Took on hot seawater. RU circulating lines to tree and tiger tank. RU lubricator and tested to 500 rci_ Pi IIPd BPV. RD lubricator. DECOMP Held PJSM. Displaced well to hot seawater at 3-4 bpm and 610-1150 psi. Final circulating rate 4.1 bpm/1400 psi. Total volume pumped 675 + bbls. Monitor Well dead. DECOMP Set and test TWCV at 3 500 si. on t below. Record on chart. good tests. DECOMP PJSM (ND Tree). DECOMP Nlpple down Production Tree and Adptor Flange DECOMP Nipple up BOP stack. Rig up test equipment. DECOMP Perform BOPE test er BP/AOGCC requirements at 250/3500 psi. Good test. State's right to witness test was waived by B. Noble. DECOMP Held crew change and performed pre-tour checks of PVT equipment and derrick. RU lubricator and tested to 500 psi. Pulled TWC. LD lubricator. DECOMP Pulled tubing hanger free with 85k Ib PU. Pulled hanger to floor. DECOMP Circulated 1 well volume. Pumped seawater 5 bpm and 550 psi. Had gas in bottoms up returns. Shut down and monitored well -stable. RU control line spooler. DECOMP POH LD 3-1/2" tubin .Spooled dual stainless steel control lines. Used air chisel on control line bands. Clamps on every other joint. DECOMP Continued POH, LD 3-1/2" tubing. Held D1 Drill while POH. Recovered 35 plastic control line clamps and 5 ss bands. RD control line spooling unit after joint 68. No fluid loss or gain. 138 jts LD at 04:00 hrs. DECOMP Service rig. Inspect Derrick. Check PVT alarms. DECOMP Continue to lay down 3 1/2" completion. Found a small hole on GLM #1 (lower GLM), pin end. Most tubing joints below GLM #1 have deteriorating threads on pin ends. DECOMP Cut and slip drilling line. DECOMP Finished laying down 3 1/2" completion. Recovered 340 Joints and a 7.16' jet cut stub. Two GLMs with flow couplings, and a SSSV. Clear and clean floor. DECOMP OAP = 0 psi. Pick up pulling/running tool and make up on a joint of Drill Pipe. Latch into the 9 5/8" Pack-off. BOLDS. Pull Pack-off to floor. DECOMP Install new pack off per Cameron Service Rep. RILDS. DECOMP Pressure test new pack-off at 3,500 psi x 30 minutes. Good test. DECOMP Install wear Bushing (9 1/16"). DECOMP Hold weekly safety meeting with Day Crew. DECOMP PJSM. Make uo fishino BHA #1 as follows: OS with ext and hollow mill, bumper jar, oil jar, DC, accelerator jar, scraper and POS. Printed: 7/23/2008 2:32:00 PM • • BP AMERICA Operations Summary Report Page2of7~ Legal Well Name: E-23 Common Well Name: E-23 Spud Date: 11/19/1987 Event Name: WORKOVER Start: 7/1/2008 End: 7/11/2008 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 7/17/2008 Rig Name: NABORS 4ES Rig Number: Date 7/6/2008 From - To ~ Hours Task I Code NPT Phase Description of Operations 17/7/2008 7/8/2008 100:00 - 02:00 I 2.00 I FISH C 02:00 - 06:00 I 4.001 FISH I C 18:00 - 21:00 3.00 FISH P DECOMP RIH with BHA #1, picking up 3-1/2" DP. 21:00 - 22:00 1.00 FISH P DECOMP Held weekly safety meeting with night crew. Discussed Safety Alerts, recent incidents, Golden Rules, and rig operations performance. 22:00 - 00:00 2.00 FISH P DECOMP Resumed RIH with BHA #1, picking up 3-1/2" DP. 00:00 - 03:00 3.00 FISH P DECOMP Continued RIH with fishing BHA #1 on 3-1/2" DP. PU total of 340 jts 3-1/2" DP + 24' pup joint. 03:00 - 05:30 2.50 FISH P DECOMP PU kelly and established parameters: PU 195k Ib, SO 107k Ib, Rot 139k Ib, 2-4 bpm, 280-800 psi, 50 rpm, 250a, 7000 Ib-ft. Tapped stub at 10,843' DPM. Rotated, milled over and swallowed stub. Engaged grapple. Jarred on stub with 225k-240k Ib PU. (-50 jar licks) 05:30 - 06:30 1.00 FISH P DECOMP Stop to circulate and condition hole at 5 bpm/1325 psi. Some gas in returns. 06:30 - 08:00 1.50 FISH P DECOMP Resume 'arrin o erations with no-'o (-75+ jar licks). Discuss options and plan forward with Anchorage Engineering. 08:00 - 08:30 0.50 FISH C DECOMP Release Overshot. 08:30 - 13:00 4.50 FISH C DECOMP Set back Kelly. Trip out with 3 1/2" Drill Pipe and Drill Collars. Stand back in Derrick. 13:00 - 14:00 1.00 FISH C DECOMP Lay down BHA #1. Clear and clean floor. 14:00 - 16:00 2.00 FISH C DECOMP Make-up BHA #2 as follows: 6" x 4 3/4" Rotery Shoe, WP Ext, 2 Jts W P, Bumper Sub, Oil Jar, 6 ea 4 3/4" Drill Collars. Total WP (5 3/4" x 5") swallow = 68'. 16:00 - 18:00 2.00 FISH C DECOMP Trip in with BHA #2 and 3 1/2" Drill Pipe from Derrick. 18:00 - 19:30 1.50 FISH C DECOMP Held crew change and performed pre-tour checks of PVT equipment and derrick. Continued RIH with BHA #2 on 113 stands 3-1/2" DP. PU kelly; PU 200k Ib, SO 105k Ib. 19:30 - 22:00 2.50 FISH C DECOMP Spotted 50 bbl EP Mud Lube slug at about 9000' in DP x 9-5/8" annulus. Pumped 70 spm at 940 psi. Had gas in returns. New parameters with kelly: PU 174k Ib, SO 118k Ib, 2-4 bpm, 200-1070 psi. 22:00 - 00:00 2.00 FISH C DECOMP Tagqed tubing stub at_i_0__,843' DPM. Washed to 10.860' without rotation. Made connection, washed to 10,879' without rotation. Rotated 20 rpm, 180a, 4000 Ib-ft, rot wt 140k Ib. Rotated and washed to 10,907'. DECOMP Mixed 20 bbl high-vis sweep. Pumped sweep around at 5-1/2 bpm and 1475 psi. Had gas in returns. DECOMP Blew down and set back kelly. LD 1 jt and 24' pup jt. POH with wash-over BHA #2, standing back 3-1/2" DP. DECOMP Service Rig. Inspect Derrick. Check PVT alarms. DECOMP Finish tripping out with 3 1/2" drill Pipe and Drill Collars. DECOMP Lay down BHA #2 (Washpipe Assembly). DECOMP Make u BHA #3 s follows: 5 3/4" Bowen Overshot w/Exts, Bumper sub, Oil Jar, Pump Out Sub, 6 ea Drill Collars, Acc Jar. DECOMP Trip in with BHA #3 and 3 1/2" Drill Pipe. Taaped tubing stub at 10.843'. Swallowed 9-1/2' of stub to 10.952 and enaaped 06:00 - 07:00 1.00 FISH C 07:00 - 08:00 1.00 FISH C 08:00 - 09:00 1.00 FISH C 09:00 - 10:30 1.50 FISH C 10:30 - 15:00 ~ 4.50 ~ FISH ~ C 15:00 - 18:00 3.00 FISH C DECOMP PU/SO 167k/120k. Jarred with 220k - 275k PU; fish not free. 18:00 - 20:30 2.50 FISH C DECOMP Held crew change and pe orme pre- our c ec s o system and derrick. Released grapple and PU just above tubing stub. Circulated total of 620 bbls at 5 bpm and 1000 psi. Had gas in returns at about 440 bbls pumped. Printed: 7/23/2008 2:32:00 PM • • BP AMERICA Page 3 of 7 Operations Summary Report Legal Well Name: E-23 Common Well Name: E-23 Spud Date: 11/19/1987 Event Name: WORKOVER Start: 7/1/2008 End: 7/11/2008 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 7/17/2008 Rig Name: NABOBS 4ES Rig Number: f O ti ~ D i i ~ ~ C ~ ~ pera Date escr pt on o ons From - To ~ Hours Task Phase ode NPT 7/8/2008 20:30 - 00:00 3.50 FISH C DECOMP LD 24' pup and 1 jt. POH with BHA #3, standing back 3-1/2" DP. 7/9/2008 00:00 - 02:00 2.00 FISH C DECOMP Continued POH with BHA #3, standing back 113 stands 3-1/2" DP. 02:00 - 04:00 2.00 FISH C DECOMP LD OS BHA #3. Cleared and cleaned rig floor. PU outside cutter BHA #4: outside cutter, washpipe ext, 2 jts washpipe, boot basket, 6 x DC. 04:00 - 08:30 4.50 FISH C DECOMP RIH with outside cutter BHA #4 on 3-1/2" DP. 341 jts + 10' pup. 08:30 - 11:30 3.00 FISH C DECOMP Up wt 163K, down wt 115K. Discuss plan on cutting tubing. W/ end of tool ~ 10,904', just above the packer, rotate for several minutes, observing 180 amps or 4000 ftnbs of torque, disengage rotary table, let out torque, pick up 2" - 3" and repeat procress. Repeat this scenario approximately (20) times until fingers on cutter tool finally contact collar on 6' pup and blades are kicked out and cut is made. Well went on a slight drink, indicatin cut was successful) accom lished and lu is in i e above cut. 11:30 - 13:30 2.00 FISH C DECOMP PJSM. Circulate well bore, some gas with bottoms up, not enough to shut in, continue to circulate to clean returns. 5 bpm / 1225 psi. Loss rate while circulating approximately 50 bph. 13:30 - 18:00 4.50 FISH C DECOMP PJSM. POOH, standing back pipe. Baker Machine shop calls and informs will not be able to manufacture tool for running ent uide stop ops and LD/DP. Continue to POOH & LD/DP. 18:00 - 00:00 6.00 FISH C DECOMP Held crew change and performed pre-tour checks of PVT equipment and derrick. Continued POH and LD 3-1/2" DP. 7/10/2008 00:00 - 01:00 1.00 FISH C DECOMP Continued POH and LD 3-1/2" DP. 01:00 - 02:30 1.50 FISH C DECOMP RU to LD fish. RU tubing punch. Punched 3 holes in recovered tubing fish. LD BHA, washpipe and 3-1/2" tubing Tubing packed with sand, but no trapped pressure. Recovered 24.70' jet cut piece, 32.24' whole joint, and 1.18' outside cut piece. Outside cut was very clean with no pipe deformation. Remaining 3-1/2" tubing stub at 10,901' DPM. Fluid loss about 10 bbl/hr. 02:30 - 04:30 2.00 FISH C DECOMP RIH with remaining 3-1/2" DP from derrick. POH and LD same. 04:30 - 06:00 1.50 FISH C DECOMP Pulled wear ring. Cleared and cleaned rig floor. 06:00 - 09:30 3.50 FISH C DECOMP PJSM. Rig up slickline, full pressure control. Pressure test lubricator to 500 psi, OK. 09:30 - 15:00 5.50 FISH C DECOMP PJSM. RIH w/ bowen overshot /scoophead assembly on 7" G spear. Made it to 10,850' OK, then had to spank it on down to 10,895'. Attempt to pump it down by bullheading into well ~ 4 - 5bpm / 2000 psi max pressure. Unable to get scoophead down to to of tubing stub ~ 10,905'. 15:00 - 17:00 2.00 FISH C DECOMP PJSM. Attempt to shear off scoophead assembly. POOH. Scoo head sheared off and left down hole. 17:00 - 19:30 2.50 FISH C DECOMP RD slickline equipment. Installed flow riser. Set wear bushing. Notified AOGCC (J. Crisp) at 18:30 hrs of upcoming BOPE test. 19:30 - 00:00 4.50 FISH X DFAL DECOMP MU G profile spear BHA #5: spear, XO, 9 x DC, POS. RIH, strapping and picking up 3-1/2" DP. 7/11/2008 00:00 - 06:00 6.00 FISH X DFAL DECOMP Continued RIH with G profile spear BHA #5, picking up 3-1/2" DP. Fluid loss about 4-5 bph. Printed: 7/23/2008 2:32:00 PM • BP AMERICA Page 4 of 7 Operations Summary Report Legal Well Name: E-23 Common Well Name: E-23 Spud Date: 11/19/1987 Event Name: WORKOVER Start: 7/1/2008 End: 7/11/2008 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 7/17/2008 Rig Name: NABOBS 4ES Rig Number: - , ~ ~ ~ Phase Description of Operations Date ~ From - To ~ Hours Task ~ Code NPT , 7/11/2008 06:00 - 06:30 0.50 FISH X DECOMP Service rig, check crown o matic, PVT system, perform daily derrick inspection, OK. 06:30 - 07:30 1.00 FISH X DECOMP PJSM. Slip and cut drilling line, (84'}. Circulate well while slipping and cutting. 07:30 - 11:00 3.50 FISH X DECOMP PJSM. Continue to RIH w/ 3 1/2" DP and G spear, picking up singles out of pipe shed. 11:00 - 12:00 1.00 FISH X DECOMP PJSM. Establish parameters. Up wt 160K, down wt 115K. Circulate ~ 4 bpm / 950 psi while setting down ~ 10,901', set down 10K to latch up scoop head to tubing stub, pick up while pumping to ensure G spear releasing OK. Repeat and then set down, shut off pump, pick up to 175K to verify latched up, OK. Set down and brin on um release from scoo head OK. 12:00 - 14:00 2.00 FISH X DECOMP PJSM. CBU ~ 5 bpm / 1050 psi, observe some gas back with bottoms up, circulate until it cleaned up, OK. 14:00 - 16:30 2.50 FISH X DECOMP PJSM. POOH & LD/DP. 16:30 - 18:00 1.50 FISH X DECOMP PJSM. 100 jts laid down. Some flow up drill pipe, CBU and prepare dry job. 18:00 - 19:00 1.00 FISH X DECOMP Held crew change and performed pre-tour checks of PVT equipment and derrick. Pumped 9.8 ppg dry job. Shut down and monitored well. Fluid level falling with no gas evolution. 19:00 - 00:00 5.00 FISH X DECOMP Resumed POH and LD 3-1/2" DP. 7/12/2008 00:00 - 01:00 1.00 FISH X DECOMP Continued POH and LD 3-1/2" DP. LD BHA #5. RD handling equipment and cleared floor. 01:00 - 03:00 2.00 EVAL P DECOMP Pulled wear ring. NU pert flange. Spotted slickline equipment. 03:00 - 07:00 4.00 EVAL P DECOMP Held PJSM with SWS slickline crew. RU slickline equipment with full pressure control. 07:00 - 10:00 3.00 EVAL P DECOMP RIH w/ 1.81" drift on slickline and drift to 11 006' unable to et further 78 de ree deviation at that int. POOH. 10:00 - 11:30 1.50 EVAL P DECOMP PJSM. R/D slickline, nipple down shooting flange, N/U flow nipple. 11:30 - 16:30 5.00 BOPSU P DECOMP PJSM, Set test plug and rig up test equipment. Conduct week) BOPE testa ..requirements. AOGCC rep Jeff Jones waived witnessing the test, (24 hour notice given). Test witnessed by Nabors tool pusher and well site leader. Pul! test plug and rig down test equipment. 16:30 - 18:00 1.50 BUNCO RUNCMP PJSM. Rlg up to run compeltion string. 18:00 - 20:30 2.50 BUNCO RUNCMP Held crew change and performed pre-tour checks of PVT system and derrick. Continued RU single joint compensator and torque turn equipment. 20:30 - 00:00 3.50 BUNCO RUNCMP RIH with 4-1/2" 12.6# 13Cr80 VAM To tubin and accessories. Bakerlocked all connections from packer down. Torque turned connections to 4440 Ib-ft. 53 jts RIH at 00:00 hrs. 7/13/2008 00:00 - 02:30 2.50 BUNCO RUNCMP Continued RIH with 4-1/2" 12.6# 13Cr80 VAM Top tubing and accessories. Torque turned connections to 4440 Ib-ft. At jt #68, 2973', tagged 7-5/8" scab Ainer top. Had to rotate WLEG into liner. Had to rotate each subsequent collar into liner top, through jt #69. Made decision not to attempt forcing packer into liner. 02:30 - 06:00 3.50 PULL C DECOMP RU to la down 4-1/2" tubin RD torque turn equipment. POH, LD 4-1/2" tubing. 06:00 - 06:30 0.50 PULL C DECOMP Perform check on PVT system, derrick inspection and check crown o matic, OK. Printed: 7/23/2008 2:32:00 PM • • BP AMERICA Page 5 of 7 Operations Summary Report Legal Well Name: E-23 Common Well Name: E-23 Spud Date: 11/19/1987 Event Name: WORKOVER Start: 7/1/2008 End: 7/11/2008 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 7/17/2008 Rig Name: NABOBS 4ES Rig Number: NPT ~ Phase Description of Operations Date From - To ours Task Code -- 7/13/2008 06:30 - 09:30 3.00 PULL C DECOMP Continue to POOH w/ 4 1/2" completion, stand back baker locked jewelry in one piece. 09:30 - 11:30 2.00 CLEAN C DECOMP PJSM. Set wear ring, Pick up BHA #6 to dress off liner top. 11:30 - 15:30 4.00 CLEAN C DECOMP RIH w/dress off BHA #6 on 3 1/2" DP, picking up singles out of pipe shed. 15:30 - 17:00 1.50 CLEAN C DECOMP PJSM. Pick up and assemble kelly ..., was disassembled for work to be done during maintenance. M/U kelly valves and test ~ 250 / 3500 psi, OK. 17:00 - 18:00 1.00 CLEAN C DECOMP RIH with dress-off BHA #6. PU total of 91 jts 3-1/2" DP + kelly. Tagged 7-5/8" liner top at 2973' DPM. 18:00 - 19:00 1.00 CLEAN C DECOMP Held crew change and performed pre-tour checks of PVT equipment and derrick. Bull nose and string mill passed thr er t without rotation. Could n tent r li with 7.53" OD olish mill. 19:00 - 19:30 0.50 CLEAN C DECOMP CBU from just above liner top. Pumped 3 bpm at 120 psi. 19:30 - 21:30 2.00 CLEAN C DECOMP POH with dress-off BHA #6, standing back 3-1/2" DP. 21:30 - 23:00 1.50 CLEAN C DECOMP LD polish mill. Wear pattern on polish mill indicated rotation on top of 7-5/8" liner. New dress-off BHA #7: bull nose, string mill (6.75" OD), 1 jt 3-1/2" DP, sub, dress mill with no-go (8.13" OD), pup, bumper sub. 23:00 - 00:00 1.00 CLEAN C DECOMP RIH with dress-off BHA #7 on 3-1/2" DP. 7/14/2008 00:00 - 02:00 2.00 CLEAN C DECOMP RIH, tagged liner top with dress mill at 2973'. Bull nose at 3019', inside scab liner top. Rotated on liner top with following parmeters: 60 rpm, 70a, 1500 Ib-ft, 53 spm, 130 psi, 55k Ib rot wt, 0-2k WOB. Milled an estimated 4 inches. until dress m~u no- 02:00 - 03:30 1.50 CLEAN C DECOMP POH with dress-off BHA #7. 03:30 - 04:00 0.50 CLEAN C DECOMP PU polish mill. BHA #8, (same as BHA #6): bull nose (5" OD), string mill (6.75" OD), 1 jt 3-1/2" DP, polish mill (7.53" OD), sub, dress mill with no-go (8.13" OD), pup, bumper sub. 04:00 - 06:00 2.00 CLEAN C DECOMP RIH with BHA #8 on 3-1/2" DP. 06:00 - 07:00 1.00 CLEAN C DECOMP PJSM. Polish mill ~ 2973'. Establish parameters. Up wt 55K, down wt 54K, rotating wt 55K. Bring on pump ~ 60 spm / 150 psi and rotate ~ 50 - 60 RPM, setting torque limit ~ 1000 ft / lbs. Off bottom torque is 500 fUlbs. Attempt to polish tie back sleeve, make about 1.4' relative) eas .Rota stalled twice ~ 2975' w/ ma be 2K WO .Consult with town and called this good. 07:00 - 09:00 2.00 CLEAN C DECOMP PJSM. POOH w/ 3 1/2" DP and polish mill BHA. 09:00 - 10:00 1.00 CLEAN C DECOMP PJSM. Lay down polish mill BHA. 10:00 - 12:30 2.50 CLEAN C DECOMP PJSM. New info from Baker indicates this well has no tie back sleeve. So, fore o the effort to olish it u .Call Halliburton for the RTTS. Lay down Baker tools. 12:30 - 13:00 0.50 EVAL C DECOMP PJSM. Make up Halliburton RTTS for 7" 26# casing. 13:00 - 14:00 1.00 EVAL C DECOMP Conduct weekly safety meeting with day crew. 14:00 - 18:00 4.00 EVAL C DECOMP PJSM. RIH w/ Halliburton RTTS on 3 1/2" DP, running stands and then picking up singles after achieving depth of 7 5/8" liner top ~ 2973'. No bobbles going thru liner top w/ RTTS. 18:00 - 00:00 6.00 EVAL C DECOMP Held crew change and performed pre-tour checks of PVT equipment and derrick. Continued RIH with RTTS, tallying and picking up 3-1/2" DP. 7/15/2008 00:00 - 03:00 3.00 EVAL C DECOMP Circulated at 10,300'. Pumped 4-1/2 bpm at 1070 psi. Had gas in returns at 380 bbls pumped. Reduced sirs rate to 3 bpm Printed: 7/23/2008 2:32:00 PM • BP AMERICA Operations Summary Report Legal Well Name: E-23 Common Well Name: E-23 Event Name: WORKOVER Contractor Name: NABOBS ALASKA DRILLING Rig Name: NABOBS 4ES Date From - To Hours I Task Code NPT 7/15/2008 00:00 - 03:00 3.00 EVAL C 03:00 - 03:30 0.50 EVAL C 03:30 - 04:00 0.50 EVAL C 04:00 - 06:00 2.00 EVAL C 06:00 - 06:30 0.50 EVAL C 06:30 - 12:00 5.50 EVAL C 12:00 - 13:00 1.00 EVAL C 13:00 - 14:00 1.00 EVAL C 14:00 - 15:30 1.50 BUNCO 15:30 - 00:00 I 8.501 BUNCO 7/16/2008 00:00 - 07:00 I 7.00 07:00 - 07:30 I 0.50 07:30 - 11:00 I 3.50 11:00 - 15:00 I 4.00 15:00 - 15:30 I 0.50 15:30 - 19:00 I 3.50 19:00 - 19:30 I 0.501 BOPSUR P 19:30 - 20:30 1.00 BOPSU~P 20:30 - 21:00 0.50 BOPSU P 21:00 - 00:00 I 3.00 I BOPSUp P 7/17/2008 00:00 - 05:00 5.00 I BOPSUFj P 05:00 - 07:30 I 2.501 WHSUR I P Start: 7/1 /2008 Rig Release: 7/17/2008 Rig Number: Page 6 of 7 Spud Date: 11 /19/1987 End: 7/11 /2008 Phase Description of Operations DECOMP and 480 psi. Pumped total of 650 bbls seawater. DECOMP PU 150k Ib, SO 110k Ib. Set 7" RTTS at 10,301'. Closed VBR. DECOMP Pressure tested wellbore a~ airist VBR to 3500 si for 30 charted minutes. Good test. DECOMP Unset RTTS. POH, LD 3-1/2" DP. DECOMP Service rig, check crown o matic, PVT system, OK. Conduct daily derrick inspection. DECOMP PJSM. Continue to POOH & LD/DP. DECOMP PJSM. L/D Halliburton RTTS. No visible damage to packer, nor any rubbers missing. DECOMP Clean and clear rig floor. RUNCMP RU to run 4 1/2" completion string per well program. PJSM with crew, Baker reps, Nabors casing. RUNCMP RIH with 4 1/2" completion string. Crew change out at 1800: service rig, check crown o matic, PVT system. Conduct derrick inspection. Total fluid lost to well today = 36 bbls. Approximate depth of tubing at 6,362' md. WLEG and packer are throw h the 7" scab liner. RUNCMP Continue to RIH with 4 1/2" completion string from 6,362' md. PJSM with incoming crew. Conduct rig service: service equipment, inspect derrick, PVT alarms. RUNCMP Continue to RIH with total of 242 jts. PUW 117k /SOW 90k. Make Up Hanger and Landing joint. Land Hanger at 10,362' and and RILDS. RUNCMP Circulate the long way 3 BPM ~ 280 gpm. Strokes = 9665. (568 bbls) Had gas to surface ~ 8200 stks. Gas was gone ~ 9180 stks. Also had a very small amount of oil from 8200 stks. RUNCMP Reverse circulate 170 bbls warm seawater (120 degrees) 3 BPM ~ 150 gpm. Strokes = 9397. (553 bbls) Lost a total of 4 bbls during entire circulating time. RUNCMP Drop Ball and Rod and allow to fall. RU Test Equipment while waiting. RUNCMP Pressure up to set and test packer. Increase pressure to 3500_ minutes charted . Test ood. Bleed pressure and shear DCK valve. DCK did not seem to have a good clean shear. R/U & pump 2 BPM down IA ~ 600 psi & Pumped down tbg, 2 BPM C~ 800 psi. Set TWC and test to 3500 psi from top and 1000 psi from below (charted). Test good. Fluid loss during tour = 4 bbls. PJSM with incoming crew. OTHCMP Service rig: inspect derrick, service equipment, inspect PVT alarms. OTHCMP Drain stack, begin ND on BOPE. OTHCMP PJSM with crew, TP, WSL on raising beaver slide, breaking stack on BOPE. OTHCMP Continue to ND BOPE. Due to rig move, crew is completely breaking down and removing BOPE. OTHCMP Continue to ND BOPE. Due to rig move, crew is completely breaking down and removing BOPE. OTHCMP NU adapter flange to wellhead. Replace 2 damaged LDS. Pressure test Adapter Flange to 5000 psi for 30 minutes. Printed: 7/23/2008 2:32:00 PM ,. • • BP AMERICA Operations Summary Report Page 7 of 7 ~ Legal Well Name: E-23 Common Well Name: E-23 Spud Date: 11/19/1987 Event Name: WORKOVER Start: 7/1/2008 End: 7/11/2008 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 7/17/2008 Rig Name: NABOBS 4ES Rig Number: Date From - To Hours Task Code NPT Phase Description of Operations 7/17/2008 07:30 - 09:30 2.00 WHSUR P OTHCMP N/U X-mas tree. Fill tree & test to 5000 psi for 15 min. 09:30 - 10:30 1.00 WHSUR P OTHCMP P/U lubricator & test to 500 psi. Pull TWC. UD TWC & lubricator. 10:30 - 13:00 2.50 WHSUR P OTHCMP R/U Hot oilers. Pressure test lines to 3500 psi, Ok. Freeze protect well w/ 140 bbls of diesel. Pumped 140 bbls down annulus ~ 2 BPM , 1380 psi. 13:00 - 14:30 1.50 WHSUR P OTHCMP R/U lines & allow well to U-tube diesel into tubing. 14:30 - 15:30 1.00 WHSUR P OTHCMP P/U T-bar & install BPV. Pressure test BPV from bottom w/ 1000 psi for 30 min. Charted test. 15:30 - 18:00 2.50 WHSUR P OTHCMP Finish dressing tree. B/D all Iines.Secure well & cellar. Release riq ~ 1800 hrs. Printed: 7/23/2008 2:32:00 PM 'EILHEAD a 13-5/8" McEVOY CT.tJATOR= BAKER 3. QEV = 68.05' _. ELEV = 31.85' DP = 1597' ax Angle = 96 @ 12671' ~tum MD = 11003' 3tum TVD = 8800' SS DRLG DRAFT 13-3/8" CSG, 72#, L-80 BTRS, ID = 12.347" ~~ 2792' TOP OF 7-5/8" SCAB LNR I 2983' 7-5/8" SCAB LNR, 29.7#, N-80 4405' TOP 7" LNR 8316' E-23B S~ NOTES: CSG PATCH: 2983' - 4405'. 2215' I-I 4-1/2" X Nipple ID=3.813" GAS LIFT MANDRELS iT MD TVD DEV TYPE VLV LATCH PORT DATE 2 4071 3513 51 KBG-2 DOME BK 16 07/25/0 1 7575 6011 45 KBG-2 SO BK 20 07/25/0; 2983' TOP OF PATCH,BKR PKR-MOD CPH 4405' BOTTOM OF PATCH, BKR PKR-MOD 3D 10243' ~ 4-1/2" X Nipple ID=3.813" 10264' 7" X 4-1/2" BAKER S-3 PACKER 10287' 4-1/2" X Nipple ID=3.813" I4-1/2" 12.6#, 13Cr-80 VAMTOP, ID=3.958" I-~ 10361' qSl~ ~v.~t t.~c o~> b'1 ~/8" L , 47#, L-80 BTRS, .0732 bpf, ID = 8.681" 3-1/2" TBG STUB 10916' TOP 2-3/8" LNR 10930' -1/2" TBG, 9.2#, L-80 NSCT, .0087 bpf, ID = 2.991" ~ 10966' PERFORATION SUMMARY REF LOG: SP-SUN MWD 10/28/93 ANGLE AT TOP PERF: 91 @ 11260' Note: Refer to Production DB for historical pert data SIZE SPF INTERVAL Opn/Sqz DATE 1-9/16" 6 11260-11580 O 07/03/02 1-9/16" 6 11620 - 11680 O 07/03/02 1-11/16" 4 12000 - 12075 O 12/12/00 1-11/16" 4 12170 - 12340 O 12/12/00 1-11/16" 4 12380 - 12488 O 12/12/00 1-11/16" 4 12568 - 12662 O 12/12/00 10350' 4-1/2" XN Nipple ID=3.725" 10363' 4-1/2" WLEG 10915' -17" X 3-1/2" ENTRY GUIDE, ID = 3.00" I(7" & 4-1/2" G FISHING NECK) 10920' 7" BAKER F61 PKR W/ 14.43" SEAL BORE, ID = 4.0" 10942' 3-1/2" PARKER SWN NIP, ID = 2.80" (BEHIND LNR) 10954' 3-1/2" PARKER SWN NOGG NIP, ID - 2.80 (BEHIND LNR ) 10966' 3-1/2" WLEG (BEHIND LNR ) 10960' ~ELMD TT LOGGED 01/19/94 7" MILLOUT WINDOW (E-238)11049' - 11053' PBTD ~ 12664' ~ ~~ 1270E 2- 3/8" LNR, FL45, .00387 bpf, ID = 1.995" DATE REV BY COMMENTS DATE REV BY COMMENTS 12/09/87 AUDI 1 ORIGINAL COMPLETION 07/26/08 KSB/JPJ GLV GO (07/25/08) 11/08/93 D9 SIDETRACK (E-23A) 12124/93 D14 7-5/8" SCAB LNR (E-23A) 12/12/00 N-CDR1 CTD SIDETRACK (E-236) D7/17/08 N4ES RWO 17/9R/(1R RCFlP Ir Cif F~fTGV (,I IIf1GlMl99InR1 PRUDHOE BAY UNIT WELL: E-238 PERMIT No: 2001420 API No: 50-029-21763-02 SEC 6, T11 N, R14E, 1820' FNL 8~ 501' FEL RD F....In..,N..n !/11~e L~1 E-23B (PTD #2001420) UNDER EV..UATION for sustained casing pressure... TxIA Communication '. Regg, James B (DOA) Page 1 of 1 From: ~er1 q I t5(o 7 Sent: To: NSU, ADW Well Integrity Engineer [NSUADWWelllntegrityEngineer@BP.com] Friday, August 31,20075:06 PM GPB, GC1 OTL; GPB, Area Mgr Central (GC1/3/FS3); GPB, GC1 Wellpad Lead; Rossberg, R Steven; Engel, Harry R; NSU, ADW Well Operations Supervisor; GPB, Wells Opt Eng; GPB, Optimization Engr; GPB, Prod Controllers; Regg, James B (DOA); Maunder, Thomas E (DOA); Fleckenstein, Robert J (DOA); Randall, Jaclyn S Cc: NSU, ADWWelllntegrity Engineer; Lau, John, Jack Subject: E-23B (PTD #2001420) UNDER EVALUATION for sustained casing pressure - TxlA Communication Attachments: E-23B.pdf Hi all, /. Well E-23B (PTD #2001420) has been found to have sustained casing pressure on the IA. The well failed a TIFL due to build- up rate overnight on 08/30/07. The wellhead pressures were 2390/2080/0. The well has been classified as Under Evaluation and may be produced under a 28-day clock. The plan for ward is: 1. D: TIFL - FAILED 2. F: MIT-IA to 2500 psi (Dummy GLVs already in place) ~~CANNED SEP 1 1 2007 A wellbore schematic has been included for reference. «E-23B. pdf» Please call with any questions. Thank you, )lnna (])u6e, ~ f£. Well Integrity Coordinator GPB Wells Group Phone: (907) 659-5102 Pager: (907) 659-5100 x1154 J+\ - .Þ~- (. ~i ' 4; tt- C¡ jLi¿)O' ,u\Yt-{ p= (, <ß,Q rc..(~ SC.P::. Zµ)~~O~) ( 30 . ~% of }.Itklf) ¿t( pre (b /fí z..- 9/5/2007 TREE = 3-1/8" 5M ~OTES: CSG PATCH: 2983' ·4405', WELLHEAD = 13-5/8" McEVOY E-23B ~ BAKER ALL NIPPLES IN HOLE ARE MILLED TO 2.80"; 68.05' CANNOT USE NIPPLES. 31.85' KOP= 1597' Max Angle ~ . 2208' H 3-1/2" OTIS XDB SSSV LANDING NIP. ID = 2.80" I Datum MD - Datum ND- 8800' ssl I 13-3/8" CSG, 72#, L-80 BTRS. 10 = 12.347" I -µ ~ GAS LIFT MANDRELS 2792' IJ ST MD NO DEV TYÆ VLV LATCH PORT DATE 2 5139 4268 43 CAM-MMG OMY RK 0 04/19/06 1 8227 6568 45 CAM-MMG OMY RK 0 04/09/04 I TOP OF 7-5/8" SCAB LNR I 2983' I- 2983' H TOP OF PA TCH.BKR PKR-MOO CPH I Minimum ID = 1.825" @ 8207' 3-112" TBG PATCH I 7-5/8" SCAB LNR. 29.7#, N-80 I 4405' -- 4405' H BOTTOM OF PATCH. BKR PKR-MOD 3D 1 8207' - 8242' -13-1/2" BKR TBG PATCH (03f14/06ì. !D = 1.825" I I TOP 7" LNR I 8316' 11II . . I 10917' H 3-1 f2" PARKER SWS NIP, 10 = 2.80" I I. 19 5f8" LNR, 47#, L-80 BTRS, .0732 bpf, ID = 8.681" I 8509' I-- ¡ X I 10920' 7" BAKER FB1 PKR WI 14.43" I I TOP 2-3/8" LNR I SEAL BORE, !D = 4.0" 10930' I 10942' 3-1/2" PARKER SWN NIP. 1 ID = 2.80" (BEHIND LNR) I 10954' 3-1/2" PARKER SWN NOGO NIP, I 10 = 2.80 (BEHIND LNR ) 13-1/2" TBG, 9.2#, L-80 NSCT, .0087 bpf, ID = 2.991"1 10966' I 10966' H 3-1f2" WLEG (BEHIND LNR) I I I 10960' H ELMDTTLOGGED01/19/94 I ÆRFORA TION SUMMARY REF LOG: SP-SUN MWD 10/28/93 ~~ ~ 7" MILLOlJT W!NDOW 11049' - 11053' ANGLEAT TOP ÆRF: 91 @ 11260' œ~r Note: Refer to Production DB for historical perf data SIZE SPF INTERVAL Opn/Sqz DATE 1-9/16" 6 11260 - 11580 0 07/03/02 I PBTO H I 1-9/16" 6 11620 - 11680 0 07/03/02 '^ 12664' '^ 1-11116" 4 12000 - 12075 0 12f12/00 '~ 1-11116" 4 12170 - 12340 0 12/12/00 ~ ..... -l I 1-11f16" 4 12380 - 12488 0 12/12/00 TO 12706' 1-11/16" 4 12568 - 12662 0 12f12/00 yy\l ~ ~ yy\l ;I¡ I - 2- 3/8" LNR, FL45, .00387 bpf. !D = 1.995" H 12698' I - DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BA Y UNIT 12107187 ORIGINAL COMPLETION 04/20/04 RWUKAK SAFETY NOTE RE: NIPPLES WELL: E-23B 11107193 ML SDTRK COM PLET DOYON 9 09123/04 JAFfTLH PULL IBP & FISH ÆRMIT No: "1932400 12124193 DGH SDTRK COM PLET DOYON 14 04127 f05 NBFfTLH SET PATCH (02f16!05) API No: 50-029-21763-01 12f12fOO ADK crD SIDETRACK 03/17/06 RRDfTLH PATCH PULLED 1 SET SEC 6, T11 N. R14E. 1820' FNL & 501' FEL 07/03/02 JAFfTLH ADD ÆRFS ~06 DA V fPJC GL V ero 04/09/04 JLJ/KAK GL V ero '06 DA V IPJC GL V ero BP Exploration (Alaska) a STATE OF ALASKA _ Al~ Oil AND GAS CONSERVATION COM~ION REPORT OF SUNDRY WELL OPERATIONS D D D 1. Operations Abandon D Repair Well [] Performed: Alter Casing D Pull Tubing D Change Approved Program D Operat. Shutdown D 2. Operator BP Exploration (Alaska), Inc. Name: Stimulate D Othér D Waiver D Time Extension D Re-enter Suspended Well D 5. Permit to Drill Number: P.O. Box 196612 Anchorage, AK 99519-6612 7. KB Elevation (ft): 3. Address: 8. Property Designation: 67.95 KB' ADL-028304 ! 11. Present Well Condition Summary: Total Depth Effective Depth Casing Conductor Surface Production Scab Liner Liner Liner Perforation depth: measured 12706 true vertical 8918.4 measured 12664 true vertical 8922.48 Length 80 2763 11021 1422 2733 1768 Size 20" Conductor 13-3/8" 72# L-80 9-5/8" 47# L-80 7-5/8" 29.7# N-80 7" 26# L-80 2-3/8" 4.38# L-80 Measured depth: 11260 - 12662 True Vertical depth: 8921.19 - 8922.65 Tubing: (size, grade, and measured depth) Packers and SSSV (type and measured depth) 12. Stimulation or cement squeeze summary: Intervals treated (measured): Plug Perforations Perforate New Pool Perforate 4. Current Well Class: Development ¡;¡¡ Stratigraphic IJ Exploratory Service 200-1420 IJ: 6. API Number: 50-029-21763-02-00 > 9. Well Name and Number: E-23B > 10. Field/Pool(s): Prudhoe Bay Field/ Prudhoe Bay Oil Pool. feet feet Plugs (measured) Junk (measured) feet feet ,:.~ ..L l'--..:c MD 30 - 110 29 - 2792 28 - 11049 2983 - 4405 8316 - 11049 10930 - 12698 TVD 30 - 110 29 - 2648.69 28 - 8877.1 2785.18 - 3734.81 6528.32 - 8877 .1 8835.97 - 8919.18 - - - - 3-1/2" 9.2# L-80 3-1/2" BKR Patch 3-1/2" Baker FB-1 Packer None None Burst 1530 5380 6870 6890 7240 9840 Collapse 520 2670 4760 4790 5410 9980 30 - 10966 8207-8242 10920 Treatment descriptions including volumes used and final pressure: RBOMS 8Fl MAY 2 4 2006 13. Oil-Bbl o 6740 J Prior to well operation: Subsequent to operation: 14. Attachments: Copies of Logs and Surveys Run Daily Report of Well Operations x Representative Daily Average Production or Injection Data Gas-Mcf Water-Bbl Casing Pressure o 0 0 19143 . 32 0 15. Well Class after proposed work: Exploratory Development ¡;¡¡ 16. Well Status after proposed work: Oil ¡;¡¡. Gas IJ WAG 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. Contact Sharmaine Vestal Printed Name Sharmaine Vestal . <:::::?L. . ~'. ~ Signatur~/~ " Form 10-404 Revised 04/2004 Title Data Mgmt Engr Phone 564-4424 Tubing pressure o 375 Service W INJ IJj IJ WDSPL Sundry Number or N/A if C.O. Exempt: N/A Date 5/22/2006 Submit Original Only .,AIb S·~D' .I -- e E-23B DESCRIPTION OF WORK COMPLETED NRWO OPERATIONS EVENT SUMMARY ACTIVITYDA TE I SUMM~RY.".i<1 3/12/2006 *** CONT FROM 03-11-06 WSR *** PULLED LOWER PACKER ASSEMBLY FROM 8202' SLM & FISHED ELEMENT, DRIFTED WI DUMMY PATCH (2.73 O.D 76" OAL) TO 10,882' SLM. RDMO *** WELL LEFT SI, DSO NOTIFIED*** 3/13/2006 T/I/O 850/1300/vac Temp = SI Load IA & TBG (Pre Patch) Pumped 100 bbls of crude down IA. IA presured up to 1800 psi. Bled IA to 1330 psi down flowline. Pumped 15 bbls of diesel down tbg.-- Freeze Protect Flolwine wi WOA Procedure--. FL= 38 bbbls RDMO Final WHP's 550/1330/vac 3/14/2006 RAN JUNK BASKET GAUGE RING COMBO TO 9000'. GR WAS 2.79". SET BAKER 3.5" TUBING PATCH FROM 8207'-8242'. TAGGED PATCH AFTER " SETTING TO CONFIRM DEPTH.. FLUIDS PUMPED BBLS 16 Diesel 7 Meth 158 Crude 181 TOTAL Schlumberger Alaska Data & Consulting Services 2525 Gambell Street, Suite 400 Anchorage, AK 99503-2838 ATTN: Beth Well VMPF-57A ~O-> . ,67 ,. 02-28A !J.... û li .~ í ~ y ..; DS 18-23A \ c\ ) '- (c¡ I /OWDW-SE iÒo·· 1..) q ","' E-238 (lOC l· (~ ' ~ v E-238 ,..- 11- ~~ v P-06A ì C¡ 7 -), J. '-'; J Y-09A } q 7 - ë .~J l/ P2-49 é ,1 - C ).. ..../ ~' DS 04-23A 1 'i 3-- I }"} v ·D.S. 16-01 J ii 0 -~. 3 ~ ./ 4-10A/L-28 ).())...)..J.3 ./ 01-49/P-21 t.gg.- C173 ,,/01-57/R-23 I J) ~'~ '. /,....( BP Exploration (Alaska) Inc. Petrotechnical Data Center LR2-1 900 E. Benson Blvd. Anchorage, Alaska 99508 Job# 10672349 10928607 10942206 10893097 10889133 11039119 N/A 10942222 11062633 11051072 1105228 10662991 11072870 11072871 ::'tC'I·ï'<·"<;·=---~. {"""--~r-", ,[" ("F'~- ¡-,\;.H>',;,\f;\U....t: "'. Þ 'J ¡; q "j[1'¡h - ;.. ~- ,,=,,~ ,-';1..,1 'U t.! b JU0 Log Description CHANNEL DETECTION LOG MCNL MCNL RST -BORAX CHANNEL DETECTION LOG LEAK DETECTION LOG LEAK DETECTION LOG LEAK DETECTION LOG MEM PPROF W/DEFT PRODUCTION PROFILE W/DEFT PRODUCTION LOG WIDEFT INJECTION PROFILE U l' ~ RST PRODUCTION PROFILE W/GHOST PRODUCTION PROFILE W/GHOST Date Delivered: ~~ 17/ vZj\1 I" 08104105 NO. 3447 ~(9 ó -' ( Lþ 1--- Company: State of Alaska Alaska Oil & Gas Cons Comm AUn: Helen Warman 333 West 7th Ave, Suite 100 Anchorage, AK 99501 Field: Prudhoe Bay Date 8L Color CD 01/24/04 1 12/11/04 J})ICf : _. 04/20105 1 1]:2 J g 03/25/05 1 FJ ,J. ) G 07/16/04 1 05/08/05 1 06/04105 1 07/14/05 1 07/02105 1 07/13/05 1 07/21/05 1 02/05/04 1 07/11/05 1 07/12/05 1 .~/ Alaska Data & Consulting Services 2525 Gambell Street, Suite 400 Anchorage, AK 9~.Þ~3~;tá38 / ')1 í ATTN: Beth F f í I /7¡¿! r I .J -',' '-If!.I Received bY:r Rftf-Uv'1v-...-6Æ" C! . >'-7:1/ F:\LaserFiche\CvrPgs _, nserts\M icraft I m _ Marker.doc MICROFILMED 04/01/05 DO NOT PLACE ANY NEW MATERIAL UNDER THIS PAGE ·0""· .,,.. .,,:,"~......... 'Ii:- ....: ') ") Permit to Drill 2001420 MD 12706 ~--~"I'VD DATA SUBMITTAL COMPLIANCE REPORT 111612003 Well Name/No. PRUDHOE BAY UNIT E-23B Operator BP EXPLORATION (ALASKA) INC 8918 ~ Completion Dat 12/12/2000 ~ Completion Statu 1-OIL Current Status 1-OIL APl No. 50-029-21763-02-00 UIC N REQUIRED INFORMATION Mud Log N_go Sample No Directional S_u_rv_e_y .~~/__.,~_~ , DATA INFORMATION Types Electric or Other Logs Run: Well Log Information: Log/ Data Digital Digital Type Media Fmt Log Log Run Name Scale Media No Interval Start Stop (data taken from Logs Portion of Master Well Data Maint OH I Dataset CH Received Number Comments T T L L L MWD Survey Report FINAL MWD Survey Report FINAL 10078 FINAL /.Co~l~nsated Neutron 2 FINAL ~CNL/GR/CCL ~GR 5 FINAL .,,MD~R 5 FINAL LIS Verification FINAL 10195 FI NAL 11002 10772 11050 10772 12664 11051 11051 11002 11002 12706 12661 12708 12661 12704 12706 12706 12706 12706 Case 7/20/2001 10195,/11002-12706 Case 5/14/2001 10078 ~' 10772-12661 2/2/2001 Digital Data 2/2/2001 11050-12706 Paper Copy ch 5/18/2001 10078.~ 0772-12661 Digital Data ch 5/18/2001 12664-12704 BL, Sepia OH 7/20/2001 11051-12706 BL Oh 7/20/2001 11051-12706 BL, Sepia CH 7/20/2001 11002-12706, Paper Copy CH 7/20/2001 10195~/11002-12706, Digital Data Well Cores/Samples Information: Name Interval Start Stop Sent Received Dataset Number Comments ADDITIONAL INFORMATION Well Cored? Y(~) Chi ~ ' . Analysis_.._.._..___,...." .... ~ ~.~.iv~.ri ? Daily History Received? Formation Tops (~N Comments: Permit to Drill 2001420 DATA SUBMITTAL COMPLIANCE REPORT 1116/2003 Well Name/No. PRUDHOE BAY UNIT E-23B Operator BP EXPLORATION (ALASKA) INC APl No. 50-029-21763-02-00 MD 12706 TVD 8918 Completion Dat 12/12/2000 Completion Statu 1-OIL Current Status 1-OIL UIC N 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 PERFS 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 5. Type of Well: Development _X Exploratory_ Stratigraphic_ Service__ 4. Location of well at surface 1820' FNL, 501' FEL, Sec. 06, T11N, R14E, UM At top of productive interval 1912' FNL, 4482' FEL, Sec. 08, T11N, R14E, UM At effective depth 3315' FNL, 5167' FEL, Sec. 08, T11N, R14E, UM At total depth 3356' FNL, 5163' FEL, Sec. 08, T11N, R14E, UM (asp's 664486, 5975244) (asp's 665922, 5969903)'~ (asp's 665273, 5968485) (asp's 665278, 5968444) 6. Datum elevation (DF or KB feet) RKB 68 feet 7. Unit or Property name Prudhoe Bay Unit 8. Well number E-23B 9. Permit number / approval number ,J 200-142 10. APl number 50-029-21763-02 11. Field / Pool Prudhoe Bay Field / Prudhoe Bay Pool 12. Present well condition summary Total depth: measured true vertical 12706 feet Plugs (measured) 8918 feet Effective depth: measured true vertical 12664 feet Junk (measured) 8922 feet Casing Length Conductor 110' Surface 2753' Intermediate 8431' Scab Liner 1422' Liner 2733' Sidetrack Liner 1768' Size Cemented Measured Depth True Vertical Depth 20" 72 cf Concrete 150' 150' 13-3/8" 1951 cf PF 'E', 1951 cf 2793' 2649' Permafrost 9-5/8" 2315 cf Class 'G' 8467' 6636' 7-5/8" Uncemented 2983'- 4405' 2785' - 3735' 7" 395 cf Class 'G' 8316' - 11049' 6528' - 8877' 2-3/8" 118 cf Class 'G' 10930' - 12698' 8836' - 8919' Perforation depth: measured Open Perfs 11260'-11580', 11620'-11680', 12000'-12075', 12170'-12340', 12380'-12488', 12568'-12662' true vertical Open Perfs 8921'-8924', 8927'-8932', 8937'-8931', 8927'-8927', 8925'-8926', 8928'-8923' Tubing (size, grade, and measured depth) 3-1/2", 9.2#, L-80, TBG @ 10920' MD; 3-1/2", 9.2#, L-80, Tubing.T~i.i ~ 10966' MD. ~,~"~.,. ' ,~,~ . ,~-; .~, , ,,~. ~,.;~ Packers & SSSV (type & measured depth) 7" Baker FB1 Packer @ 10920". 3-1/2" Otis XDB SSSV Landing Nipple @ 2208' MD. 13. Stimulation or cement squeeze summary Intervals treated (measured) (see attached) Treatment description including volumes used and final pressure 14. Prior to well operation 06/26/2002 Subsequent to operation 07/23/2002 OiI-Bbl 564 1505 Representative Daily Averaqe Production or Injection Data Gas-Mcr Water-Bbl 15988 17 14992 34 Casing Pressure Tubing Pressure 322 225 15. Attachments Copies of Logs and Surveys run _ Daily Report of Well Operations _ 16. Status of well classification as: Oil ~ Gas _ Suspended Service 17. I hereby ce~ify that the foregoing is true and correct to the best of my knowledge. ,~~'~~..~,.~~"~'~/ Title: Technical Assistant :~. Schnorr ~ DeWayne R. Schnorr Form 10-404 Rev 06/15/88 · ORiGiNAL Date September 09, 2002 Prepared b~, DeWayne R. Schnorr 564-5174 SUBMIT IN DUPLICATE~ £-23B DESCRIPTION OF WORK COMPLETED NRWO OPERATIONS 06/21/2002 PERFORATTNG: DRIFT/TAG 06~30/2002 PERFORATTNG: LOAD WELL TO SECURE 07/02/2002 PERFORAT;[NG: FTLL CLEAN OUT; JEWELRY LOG--DEPTH CONTROL; PERFOEATTNG 07/03/2002 PERFORATTNG: JEWELRY LOG--DEPTH CONTROL; PERFORATING 07/04/2002 PERFORATZNG: PERFORATTNG EVENT SUMMARY 06/21/02 TAG FILL @ 10950' WLM W/8 1/2'x 1.75" DD BAILER -- SAMPLE OF FILL (MIX OF SMALL PEBBLES, CEMENT, AND SAND) *****RETURNED WELL FOR PRODUCTION**** 06/30/02 PUMP 70 BBLS 50/50 METHANOL WATER & 515 BBLS CRUDE DOWN IA. O'7/02/02 KNOCK DOWN WHP W/60 BBL SW. RIH W/1.75" JS NOZZLE. TAG BTM @ 12668' (UP, UNCORRECTED). PULL ABOVE LINER TOP, BEGIN KILLING WELL W/FILTERED SW. 07/03/02 POH. KILL WELL W/180 BBLS FILTERED SW. MAKE REPAIRS ON INJECTOR. REKILL WELL WITH 50 BBLS OF FILTERED SEAWATER AND 50 BBLS OF DIESEL TO BALANCE WELL. RIH WITH SWS MEM GR/CCL TOOL. LOGGED FROM 12457' CTD TO 11000'. LAID IN 15 BBLS FLOPRO AND FLAGGED PIPE @ 11350'. POOH. MU AND DEPLOY 1.56" HSD PJ 1606, 6 SPF, TCP GUNS. O7/04/02 POH WITH PERF GUNS. ASF. WELL STABLE, NO FLUID LOSS. F/P WITH DIESEL TO 2500'. L/D GUNS. DISPLACE COIL WITH N2. PERFORATED INTERVALS --- 11260'- 11580' & 11620'- 11680'. GUN TYPE --- 1.56" HSD PJ 1606, 6 SPF. Fluids Pumped BBLS 75 50/50 METHANOL WATER 65 DIESEL 515 CRUDE 315 SALT WATER 15 FLOPRO 985 TOTAL ADD PERFS O7/O4/2OO2 THE FOLLOWING INTERVALS WERE PERFORATED USING THE 1-11/16" POWER JETS 1606, 6 SPF, 60 DEGREE PHASING, RANDOM ORIENTATION. 11260'-11580' 11620'-11680' Page I Transmittal Form BAKER HUGHES.: Baker Atlas Canada GEOSciences Centre To: State of Alaska, Alaska Oil & Gas Conservation Commission 333 West 7th Avenue, Suite 100 Anchorage, AK 99501 Attention: Lisa Weepie Reference: Prudhoe Bay North Slope, Alaska E-23B Contains the following:.. ..,: ' . ..' ' . .:., . . :' '.. "'...' '. 1 LAS Format disk.... ..... ',.,: .,....':' '.~ .:.'.: . 11 FilmMeasured Depth GR.:Print' '":. "::'.: :'::.".:':""i. :':'":'"". , ... . .' '. ....:.... 1 TVD-GR print " . Sent By: J~ef ~ Date: July 18, 2001 Receive ~ Date: PLEASE ACKNOWLEDGE,RECEIPT BY SIGNING & RETURNING A COPY TO BP EXPLORATION (ALASKA) PETROCHEMICAL DATA CENTER 900 E. BENSON BLVD. ANCHORAGE, ALASKA 99508 Baker Atlas #1300, 401-9th Ave. S.W. Calgary, Albert a, Canada T2P 3C5 Direct: (403) 537-3752 FAX: (403) 537-3767 .n:' _~ , , : - . r- ;-~ --~ ....... ~ ......... ~_ _ ~ ._ ...... - ~.r~- ~-- .~_-~- .. : ~ - .... ? ....... %~ _ ........ ~ ~ -: ~ *~__ · _7 . - } _ _. ;~ . .~ ~ .......... :_~--- .- ~-: :'">~: _~ .... :_ . , _: ~ ,~ ~. ............... ~ - )_ - ~ Schlumberger Alaska Data & Consulting Services 3940 Arctic Blvd, Suite 300 Anchorage, AK 99503-5711 ATTN: Sherrle NO. 1t38 Company: State 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. D.$. 5-26 I ~" I I.~ LEAK DETECTION LO.G 05101101 I 1 D.S. 12-t4A ~c/~_ (c~(~ PRODUCTION PROFILE/DEFT 05104101 I 1 D.S. 16-07 ~'.~-~ O~ PRODUCTION PROFILE/DEFT 05101101 . I .1 D.S. 16-30 I ~ ~)'7(,0 PRODUCTION PROFILE/DEFT 04/30101 t 1 D.S. A-37 ~__C~ ~.- O~--~l PRODUCTION PROFILE/DEFTGLS 04/29101 t I ' D-28AL1 Lc~ "~.-- OIc/' PRODUCTION & INJECTION PROFILE 05102/01 - t 1 E-23B ,~L~O-- IC),-~ 20509 MCNL 12/t0100 t- t 1 -- . . 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: RECEIVED HAY 1 8 2001 Schlumberger GeoQuest 3940 Arctic Blvd, Suite 300 Anchorage, AK 99503-5711 - ATTN: Sherrie .' STATE OF ALASKA l ALASK.~ .L AND GAS CONSERVATION COM,~, . SION WELL COMPLETION OR RECOMPLETION REPOR'r AND LOG 1. Status of Well Classification of Service Well [] Oil [] Gas [] Suspended [] Abandoned [] Service 2. Name of Operator 7. Permit Number BP Exploration (Alaska) Inc. ~ 200-142 .3. Address ......~ 8. APl Number P.O. Box 196612, Anchorage, Alaska 99519-6612 i ~=-.~.~~1 ' 50- 029-21763-02 - .. i,~. 4. Location of well at surface , · ' , ..... 9. Unit or Lease Name 1820' SNL, 501' WEL, SEC. 06, T11N, R14E, UM · Prudhoe Bay Unit At top of productive interval . .~. 1912' SNL, 798' EWE, SEC. 08, T11N, R14E, UM '. :';".. ~"'" 10. Well Number At total depth '~ _ ..... ~ ....... ~ E-23B 3356' SNL, 117' EWE, SEC. 08, T11 N, R14E, .UM 5. Elevation in feet (indicate KB, DF, etc.) 6. Lease Designation and Serial No. 11. Field and Pool Prudhoe Bay Field / Prudhoe Bay Pool KBE = 67.95 ADL 028304 12. Date Spudded 113. DateT. D. Reached114. Date Comp., Susp., or Aband. 115. Water depth, if offshore 110. Ho. of Completions 11/30/2000 12/4/2000 1 2/12/2000 N/A MSL I One 17. Total Depth (MD+TVD) 118. Plug Back Depth (MD+TVD) 119. Directional Survey 1 20. Depth where SSSV set1 21. Thickness of Permafrost 12706 8918 FTI 12664 8922 ETI [] Yes [] NoI (Nipple) 2203' MDI 1900' (Approx.) 22. Type Electric or Other Logs Run MWD, GR, CNL 23. CASING, LINER AND CEMENTING RECORD CASING SE'Iq'lNG DEPTH HOLE SIZE WT. PER FT. GRADE TOP BOTTOM S~ZE CEMENTING RECORD AMOUNT PULLED 20" Conductor Surface 110' 110' 8 cu },ds Concrete 13-3/8" 72# L-80 / S-95 40' 2793' 17-1/2" 1951 cuft PF 'E', 1951 cu ft Permafrost 9-5/8" 47# L-80 36' 8467' 12-1/4" 2315 cuft Class 'G' 7-5/8" 29.7# N-80 STL 2983' 4405' 9-5/8" Uncemented Casing Patch 7" 26# L-80 8316' 11049' 8-1/2" :~95 cu ft Class 'G' 2-3/8" 4.39# L-80 10930' 12698' 2-3/4" 118 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) 1-11/16" Gun Diameter, 4 spf 3-1/2", 9.2#, L-80 10966' 10920' MD TVD MD TVD 12000' - 12075' 8937' - 8931' 12170' - 12340' 8927' - 8927' 26. AC~D, FRACTURE, CEMENT SQUEEZE, ETC. 12380' - 12488' 8925' - 8926' DEPTH iNTERVAL (MD) AMOUNT & KIND OF MATERIAL USED 12568' - 12662' 8928' - 8923' 2000' FreeZe Protect with 60/40 MeOH ., , . ., 27. PRODUCTION TEST Date First ProductiOn Method of Operation (Flowing, gas lift, etc.) January 3, 2001 Flowing Date of Test Hours Tested PRODUCTION FOR OIL-BBL GAS-MCF WATER'BBL CHOKE SIZE I GAS'OIL RATIO 1/20/2001 4 TEST PERIOD 2270 7496 51 95.41I 3303 Flow Tubing Casing Pressure CALCULATED OIL-BBL GAS-MCF WATER-BeE OIL GRAWTY-API (CORR) Press. 24-HOUR RATE , .. 28. CORE DATA Brief description of lithology, porosity, fractures, apparent dips and presence of oil, gas or water. Submit core chips. RECEIV' D FEB 0 2 ZOO1 Alaska Oil & Gas Cons. Commission Form 10-407 Rev. 07-01-80 Submit In Duplicate 29. 30. Geologic Markers Formation Tests Marker Name Measured True Vertical Include interval tested, pressure data, all fluids recovered Depth Depth and gravity, GOR, and time of each phase. Zone 1B 10940' 8842' 13N 11100' 8891' 13P 11107' 8894' 12N 11173' 8916' 31. List of Attachments: Summary of Daily Drilling Reports 32. I hereby certify that the foregoing is true and correct to the best of my knowledge Signed TerrieHubble ,~f~.,. ~ Title TechnicalAssistant Date ~'01'{~] E-23B 200-142 Prepared By Name/Number: Terrie Hubble, 564-4628 Well Number Permit No. /Approval No. INSTRUCTIONS GENERAL: This form is designed for submitting a complete and correct well completion report and log on all types of lands and leases in Alaska. ITEM 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 5: 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. ITEM28: If no cores taken, indicate'none'. RECE~.; .,~Ji ..... ~ .., Form 10-407 Rev. 07-01-80 FEB 0 3 Z001 Alaska Oil & Gas Cons. Commission Anchorage Well: E-23B Accept: 11/20/00 Field: Prudhoe Bay Spud: 11/30/00 APl: 50-029-21763-02 Release: 12/1 2/00 Permit: 200-142 CTD Unit: Nabors CDR1 Date PRE-RIG WORK 09125100 Run in hole with 2.50" Baker IBP. Set at'l 1,115' to cover perforations in 7" liner. Tied-in to nipples in tailpipe and corrected depth to ELMD. Verified set with weight. Pressure test to 500 psig. Pull out of hole. 09/26/00 Run in hole with 2.25" cementing nozzle. Tag IBP and correct depth. Pump 6.5 bbls - 17 ppg, Class G cement. Lay cement from 11,111' to tubing tail. Pump 20 bbls contaminate. Contaminate down to 10,960' (TOC)'. Cimulate hole at I bpm while pulling out of hole at 65%. Freeze protect to 2100' with methanol. SIWHP = 130 psig. Secure well. Rig down. 09/27/00 Tag cement plug at 10,946' sim and test tubing to 2200 psi. Good test. ~,~10~3/00 - 10/04/00 II SSSVN from 2184' to 2188'. Mill SWS at 10,932' ctmd, mill SWS nipple at 10,962' ctmd. Mill SWN nipple at 10,973' ctmd. Tag TOC at 10,993'. Mill cement to 11,000' ctmd and sweep gel around. Pull out of hole and drop 5/8" ball to open c-sub. Left well freeze protected to 2,500', with 60-40 methanol water. 10/28/00 Tag TOC at 10,962' corrected. Log for tie-in. Pull out. of hole, freeze protect CT and well. Suspend operations. COIL TUBING DRILLING 11/21100 Complete spotting modules. NU BOPE. Accept rig at 2100 hours on 11/20/00. Test BOPE. Witness waived by J. Jones with AOGCC. 11/22/00 Continue to test BOPE. Change two valves on BOP stack. Test same. Change out stripper element in hydril. RU to pull test weld on connector to 20K#. RU DSM lubricator. Pull BPV. Monitor well for 15 minutes. Displace coil to KCL water. MU pilot hole assembly. Surface test orienter. Run in hole. Shallow test MWD. Continue to RIH to flag (-12 correction). Log tie-in. Correct -9'. Tag cement at 11,000'. Orient. Drill cement f/11,000' to 11,080'. Cement very soft. Pump bio sweep. Pull out of hole for underreamer. 11/23/00 LD BHA #1 (pilot assembly). MU Weatherford underreamer, RIH. Underream cement from 10990' to 11085'. Difficult getting started. 11/24/00 Underream pilot hole cement to 11080'. Pump bio sweep. RIH. Spot and RU Dowell cementers. Mix and pump cement from 11070'. Estimated TOC at 10870'. Wait on cement to settle. Wash cement to 10940' (inside tubing tail). POH. Circ out excess cement. Wait on cement. RECEIVED FEB 0 2 ZOO1 .Alaska Oil & Gas Cons. Commission Anchorage E-23B, Coil Tubing Drilling Page 2 11125100 Wait on cement plug. MU BHA #4, RIH. Mill pilot hole and ramp to 11049', encounter casing. Pull out of hole. MU window milling assembly, RIH. 11/26100 Mill window, pull out of hole. MU crayola mill BHA, RIH. 11127/00 Dress window to 11060'. MU drilling BHA, RIH. 11128/00 Drill to 11097'. 11/29/00 Log GR. Back ream to 11045'. Ream to 11093'. 11/30/00 Perform weekly BOP test. Test witness waived by AOGCC's John Spaulding. All valves passed. MU BHA #10, RIH. Drill ahead to 11144'. 12/01/00 Drill to 11557'. 12/02/00 Drill to 11995'. 12/03/00 Drill to 12227'. 12/04/00 Drill to TD at 12706'. 12/05/00 Ream and backream hole. Wait on weather. 12/06/00 Wait on weather. 12/07/00 Continue to wait on weather. 12/08/00 POOH laying new FIo Pro in open hole. Prep to run 2-3/8" liner. Run in hole with liner, work to bottom. 12/09/00 Circulate hole, prepare for cement job. Batch mix 21 bbls of 15.8 ppg cement. Cement to weight. Pressure test lines and pump 5 bbls KCL/water followed by 16 bbls cement, displace w 41.5 bbls KCL/water and pull out of 'o' ring sub/flapper valve assembly. Lay in remaining cement inliner and cleanout with 35 bbls biozan. Good indication of cement back from TOL and BOL. Cement in place. POOH, circulating. Jet stack. Perform weekly BOPE test, while waiting on cement. Witnessing waived by AOGCC rep. Jeff Jones. 12/10100 Log down from 10800' to PBTD and back up. POOH with logging assembly. RECEIVED FEB 0 2 ZOO1 Alaska Oil & Gas Cons. Commission Ar:¢;,';~':: E-23B, Coil Tubing Drilling Page 3 12/11/00 Identify perf intervals. PU perf guns and RIH. Perforate with 1-11/16" guns, 4 spf at 3100 psi. Perf intervals: 12000' - 12075', 12170' - 12340', 12380' - 12488', 12568' - 12662'. POOH and monitor. Hole stable. 12/12/00 RIH with nozzle and freeze protect well with 60/40 methanol/water. POOH. Set BPV, clean pits. Blow down lines and N/D BOPE. Rig released. RECE V ...... . ......... FEB 0 2 :" "'"' Alaska Oil & Gas Cons ......... ' ...... " Anchorag<:.'. ObP BP Amoco Baker Hughes INTEQ Survey Report Company: BP Amoco Site: PB E Pad We~: E-23 Wenimth: E-23B Bale: 1118/2001 Time: 10:36'.24 Page'. I C~-enllauI~NE) Refa'ence: Well: E-23, True Norlh Vert~gal (TVD) Reference: 38: 23 10/15/1993 00:00 64.9 Smtiem fVS) Refemmce: Well (0.00E,0.00N,211.00AzJ) Sart~y Cnk:nhtio~ Metkod: Minimum Curvature Db: Oracle Field: Prudhoe Bay North Slope UNITED STATES Map System:US State Plane Coordinate System 1927 Geo Datem: NAD27 (Clarke 1866) Sys Datem: Mean Sea Level Map Zone: Alaska, Zone 4 Coordinate System: Well Centre Geomagnetic Model: BGGM2000 Site: PB E Pad TR-11-14 UNITED STATES: Norlh Slope Site Position: Northing: From: Map Easting: Position Uncertainty: 0.00 ff Ground Level: 0.00 ff 5973160.88 ft Latitade: 70 19 59.134 N 662538.97 ff Longitude: 148 40 53.054 W North Reference: True GrM Convergence: 1.24 deg Well: E-23 Slot Name: 23 E-23 Well Position: +NI-S 2040.58 ft Northing: 5975244.00 ft Latitade: 70 20 19.200 N +K/-W 1991.85 ft Easting: 664486.00 ff Longitude: 148 39 54.876 W Position Uncertainty: 0.00 ff Wellpath: E-23B Drilled From: E-23A 500292176302 Tie-on Depth: 11050.00 ft Current Datam: 38: 23 1011511993 00:00 Height 64.90 ft Above System Datam: Mean Sea Level Magnetic Data: 10/5/2000 Declination: 26.90 deg Field Strength: 57478 nT Mag Dip Angle: 80.80 deg Vertical Section: Depth FFom (TVD) +N/-S +K/-W Direction ff ff ff deg 0.00 0.00 0.00 211.00 Survey: MWD Start Date: 1215/2000 Company: Baker Hughes INTEQ Engineer: Tool: MWD,MWD - Standard Tied-to: From: Definitive Path Annotation MD TVD " ff ff' 11050.00 8877.18 Kick-off Point 12706.00 8918.28 Projected to TD Survey MD ' Incl Azlm TVD SSTVD "· "N/S,' ', F,/W. ' MapN MapE .DLS VS · ff deg deg, ff. ' ... tt ".,, ff 'it'. ,ff .fl deg/100it ff 11050.00 78.33 165.56 8877.18 8812.28 -5473,95 1345.46 5969801.26 665951.12 0.00 11098.00 69.30 164.10 8890.65 8825.75 -5519.57 1349.76 5969755.75 665958.41 41.53 11132.00 67.50 188.30 8903.17 8838.27 -5550.99 1346.35 5969724.27 665963.70 12.65 11170.00 75.90 194.60 8915.11 8850.21 -5586.28 1339.15 5969688.82 665947.28 27.13 11203.00 85.60 195.30 8920.40 8855.50 -5617.71 1330.76 5969657.22 665939.57 29.47 11244.00 91.60 203.00 8921.41 8855.51 -5656.39 1317.33 5969618.26 665926.99 23.80 11275.00 90.20 212.90 8920.92 8858.02 -5683,73 1302.82 5969590.61 665913.09 32.25 11307.00 90.80 221.00 8920.64 8855.74 -5709.28 1283.60 5969564.64 665894.43 25.38 11352.00 87.50 232.60 8921.31 8858.41 -5740.03 1250.86 5969533.19 665862.38 26.79 11382.00 90.00 241.40 8921.97 8857.07 -5756.35 1225.73 5969516.33 665837.62 30.49 11412.00 89.80 250.50 8922.02 8857.12 -5768.58 1198.37 5969503.52 665810.53 30.34 11455.00 88.20 253.70 8922.77 8857.87 -5781.77 1157.46 5969489.41 665769.92 8.32 11488.00 89.90 249.40 8923.32 8858.42 -5792.21 1126.17 5969478.29 665738.87 14.01 11536.00 90.80 243.10 8923.02 8858.12 -5811.53 1082.26 5969458.01 665695.40 13.26 11586.00 87.70 243.10 8923.41 8858.51 -5825.10 1055.51 5989443.86 665668.98 10.33 11593.00 86.00 237.50 8924.90 8860.00 -5838.45 1032.10 5969430.00 665645.85 21.64 11624.00 64.50 230.80 8927.47 8862.57 -5856.53 1007.07 5969411.37 665821.23 22.07 11666.00 85.10 223.40 8931.28 8866.38 -5864.98 976.46 5969382.26 665591.24 17.60 3999.13 4036.02 4064.70 4098.66 4129.93 4170.00 4200.91 4232.71 4275.92 4302.85 4327.42 4359.81 4364.87 4424.05 4449.46 4472.g6 4501.35 4541.51 BP Amoco Baker Hughes INTEQ Survey Report Cmlmmmy: ~.mUYw~co Dmle: 1118/2001 Tbm: 10:36:24 l'mSe: :% !;ld4: ~ Bay C~-~rdhmlm(NIg) Rd'erem~e: Well: ~. True North Site: PB E Pad Yertlcml (1'VD) Referemce:. 38: 23 10115/1993 00:00 64.9 WeB: E-23 Secflom (Y$) Referemce: Well (0.00E,0.00N,211.00Azi) WeBpatk: E-23B $m'~y CmicMa#ou Metkod: Minimum Curvature Db: Oracle Sur3,ey MD Iud Adm 'FVD SSTV1) N/S F,/W MspN MapE DLS ¥S ftc deo deo 'fl fl ftc fl fl fi: deo/lO0~ fl 11708.00 89.90 225.90 8933.11 8868.21 -5914.83 946.98 5969351.78 665562.43 12.88 4582.27 11762.00 91.00 218.50 8932.69 8867.79 -5954.80 910.73 5969311.02 665527.07 13.85 4635.20 11813.00 88.60 212.20 8932.87 8867.97 -5996.37 881.24 5969268.82 665498.50 13.22 4686.02 11866.00 87.50 203.00 8934.67 8869.77 -6043.26 856.73 5969221.40 665475.02 17.47 4738.84 11895.00 89.20 203.00 8935.51 8870.61 -6069.94 845.40 5969194.48 665464.28 5.86 4767.54 11959.00 87.90 208.30 8937.13 6872.23 -6127.60 817.72 5969136.24 665437.87 8.52 4831.22 12001.00 92.90 209.40 8936.64 8871.94 -61 64.37 797.46 5969099.03 6654 18.43 12.19 4873.18 12045.00 95.00 219.20 8933.80 8868.90 -6200.59 772.76 5969062.28 665394.53 22.73 4916.94 12088.00 94.60 222.40 8930.20 8865.30 -6233.02 744.76 5969029.25 665367.25 7.47 4959.16 12123.00 93.30 218.30 8927.79 8862.89 -6259.63 722.16 5969002.15 665345.24 12.26 4993.61 12151.00 90.20 215.30 8926.93 8862.03 -6282.03 705.40 5968979.39 665328.98 15.40 5021.44 12184.00 88.80 213.20 8927.22 8862.32 -6309.31 686.83 5968951.72 665311.01 7.65 5054.39 12217.00 ' 87.60 204.10 8928.26 8863.36 -6338.22 671.03 5968922.46 665295.85 27.80 5087.31 12260.00 89.90 200.90 8929.20 8864.30 -6377.93 654.59 5968882.41 665280.28 9.16 5129.82 12310.00 92.60 194.20 8928.11 8863.21 -6425.56 639.52 5968834.46 665268.27 14.44 5178.40 12357.00 93.00 189.70 8925.81 8860.91 -6471.47 629.80 5988768.35 665257.56 9.60 5222.76 12438.00 89.90 187.60 8923.76 8856.86 -6551.51 617.63 5968708.07 665247.14 4.62 5297.64 12458.00 86.10 187.60 8924.46 68~9.56 -6571.32 614.98 5968688.21 665244.94 19.00 5315.98 12501.00 87.20 180.20 8926.97 8862.07 -6614.12 612.07 5988645.36 665242.98 17.37 5354.17 12524,00 88.20 176.70 8927.90 8863.00 -6637.09 612.69 5968622.41 665244.09 15.81 5373.53 12575.00 92,80 165.80 8927.45 8862.55 -6687.40 620.43 5968572.28 665252.93 23.19 5412.68 12624.00 92.70 166.50 8925.10 8860.20 -6734.92 632.15 5968525.03 665265.68 1.44 5447.37 12671.00 95.60 174.60 8921.69 8856.79 -6781.12 639.84 5988479.02 665274.39 18.26 5483.01 12706.00 95.60 174.60 8918.28 8853.38 -6815.50 643.12 5968444.42 665278.43 0.00 5511.05 BI= Amoco WELLPA TH DETAIL~ E-23B r, Oo2g2~Te,soa ~t ~1~: E~ ~MD: ff~.~ Ve~l ~ 0~: ~Jt - ~3 VWiI ~n A~M: ~11.~ R~: ~ ~ REFERENCE INFORMATION Co-ordnale (N/E) Reference: Well Cerr~e: E-23, True Norlh Vsrlicd (TVD)Refemnc~: b-~j~em: Mean Se,, Le~l Secl]on (VS) Reference: Slot - 23 (0~0,0.00) Meas~ed Depth Refereme: 38: 23 1011511993 00:00 64.9 Calculalion Method: ~ CLnatu~ ANNOTATIONS 1VD . IA) Anm~bon ~12.28 11050.00 885~.38 12706.0~ P~dtoTO Obp ! i._-----i--. -~ ............... ~--.-.-~- .............. ......i. ....... ! ....... .; ....... ~ ....... F ...... ~ ....... ~ ....... '; ..................... ~ ....... ~ ....... ; ........ i ....... iiii .... ' :'-"*-~'"'-i ...... r'-""i ...... 1000 ~soo 2ooo 2~00 3o WeBt(-)/Emt(~) [~OOft/in] I ! i ; I ._ I I i i i i i 4000 4200 4400 4600 4800 5000 5200 5400 5600 Vertical Section at 211.00° [2001Mn] Plot 111812001 10:44 AM ALASIIA OIL AND GAS CONSERVATION CO~ISSIOB[ TONY ICNOWLE$, G~VERNOR 3001 PORCUPINE DRIVE ANCHORAGE. ALASKA 99501-3192 PHONE: (907) 279-1433 FAX: (907) 276-7542 Thomas McCarty CT Drilling Engineer BP Exploration (Alaska) Inc. P O Box 196612 Anchorage, AK 99519-6612 ge~ Prudhoe Bay Unit E-23B BP Exploration (Alaska) Inc. Permit No: 200-142 Sur Loc: 1820'SNL, 501'WEL, Sec. 06, T11N, R14E, UM Btmhole Loc. 3001'SNL, 204'EWL, Sec. 08. T1 IN, R14E, UM Dear Mr. McCarty: 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. Blowout prevention equipment (BOPE) must be tested in accordance with 20 AAC 25 035. 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. Sincerelyz,~ 1 T. Seamount, Jr. Commissioner BY ORDER OF THE COMMISSION this ] ~i day of September, 2000 DATED dlf/Enclosures Department of Fish & Gmne, Habitat Section w/o encl. Department. of Environmental Conservation w/o encl. ' ~ STATE OF ALASKA Al_ASK OIL AND GAS CONSERVATION COMMISSION PERMIT TO DRILL 20 AAC 25.005 1a. Type of work B Drill [] Redrill [ lb. Type of well [] Service [] Development Gas [] Single Zone [] Multiple Zone Re-Entry [] Deepen [] Exploratory [] Stratigraphic Test [] Development Oil 2. Name of Operator 5. Datum Elevation (DF or KB) 10. Field and Pool BP Exploration (Alaska) Inc. KBE = 67.95 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) 1820' SNL, 501' WEL, SEC. 08, Tll N, R14E, UM Prudhoe Bay Unit At top of productive interval 8. Well Number 1577' SNL, 661' EWL, SEC. 08, T11 N, R14E, UM E-23B Number 2S100302630-277 At total depth 9. Approximate spud date 3001' SNL, 204' EWL, SEC. 08, T11 N, R14E, UM 09/22/00 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 028305, 2278' MD~ No Close Approach 2560 12328' MD / 8864' TVD 16. To be completed for deviated wells o 17. Anticipated pressure {see 20 AAC 25.035 (e) (2)} Kick Off Depth 11050' MD Maximum Hole Angle 91 Maximum surface 2394 psig, At total depth (TVD) 8800' / 3450 psig 18. Casing Program Setting Depth Size Specifications Top Bottom Quantity of Cement Hole Casin.cl Weight Grade Couplin.q Len.cith MD TVD MD TVD {include sta.qe data) 2-3/4" 2-3/8" 4.39# L-80 FL4S 1428' 10900' 8755' 1_P328' 8864' 202 cu ft Class 'G' '19. To be completed for Redrill, Re-entry, and Deepen Operations. ~ ,~a=.=v a,,,, .~, ..,.,-,=,-- Present well condition summary Total depth: measured 12300 feet Plugs (measured)SEP 1 2000 true vertical 8900 feet Effective depth: measured 12300 feet Junk (measured) Ajask8 0~ & Gas Corls, Com~llisSJOl~ true vertical 8900 feet Anchorage Casing Length Size Cemented MD 'I'VD Structural Conductor 110' 20" 8 cu yds Concrete 110' 110' Surface 2753' 13-3/8" 1951 cuft PF 'E', 1951 cuft PF 2793' 2650' Intermediate 8431' 9-5/8" 2315 cuft Class 'G' 8467' 6636' Production Liner 3005' 7" 395 cuft Class 'G' 8316' - 11321' 6529' - 8904' Liner 1094' 4-1/2" Uncemented Slotted Liner 11206' - 12300' 8898' - 8900' 9-5/8" Casing Patch 1422' 7-5/8" Uncemented Casing Patch 2983' - 4405' 2788' - 3736' Perforation depth: measured Slotted Liner: 11327'- 12276' ORI$1N^L true vertical Slotted Liner: 8904' - 8900' 20. Attachments [] Filing Fee [] Property Plat [] BOP Sketch [] Diverter Sketch [] Drilling Program [] Drilling Fluid Program [] Time vs Depth PIct [] Refraction Analysis [] Seabed Report [] 20 AAC 25.050 Requirements Cor~iact Engineer Narne/Numbec Thomas McCarty, 564-5697 Prepared By Name/Number: Terrie Hubble, 564-4628 21. I hereby certify that the foregoing is true and correct to the best of my knowledge ' S~ ned Thomas McCarty ~ 'g ~7'~,'"' "~'~ '~"'~ Title CT Drilling Engineer Date/,/~/~' Permit Nu,.~~ /~/Z.-. API Number ~p. pT~~) See coverletter -- 50- 029-21763-02 -- for other requirements Conditions of Approval: Samples Required [] Yes ,1~ No Mud Log Required [] Yes I~ No Hydrogen Sulfide Measures ~l. Yes [] No Directional Survey Required I~ Yes [] No Required Working Pressure for BOPE [] 2K [] 3K [] 4K [] 5K [] 10K [] 15K ~ 3.5K psi for CTU Other: ORIGINAL SIGNED BY by order of Approved By D Taylor Seamount .. Commissioner the commission Date ~--/~'-' ~ O Form 10-401 Rev. 12-01-85 Submit In Triplicate BPX E-23b Sidetrack Summary of Operations: E-23a is currently shut in. The E-23b sidetrack will access reserves located in the distributary channels and mouthbar sands in Zone lb in the area between E and G pads. This sidetrack will be conducted in two phases. Phase 1: Set IBP, Lay in cement, Mill window off of cement plug. Planned for Sept 17, 2000. Service coil will Set a Inflatable bridge plug at approx. 11190'md · Service coil will lay in approx. 9 bbls cement on top of the IBP to shut off existing perforations and slotted liner section. · Service coil will mill the window off cement plug with the KOP at approx. 11050'md (8812'tvdss) Phase 2: Drill and Complete sidetrack: Planned for Sept 22, 2000. Drilling coil will be used to drill and complete the directional hole as per attached plan. The sidetrack will be completed with a cemented 2 3/8" liner that will overlap the existing 7" liner. The top of 2 3/8" liner planned is planned at approx. 10,900' MD (8755'tvdss). Approx. 36 bbls cement will be used for this liner cement job. The top of the cement is planned to be at approx. 10960'md (8784'tvdss) Mud Program: Phase 1: Seawater Phase 2: Seawater and FIo-Pro (8.5 - 8.7 ppg) 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: · 2 3/8", 4.39#, L-80, FL4S cemented liner will be run from TD to approx. 10,900' MD (8755'tvdss). Top of liner cement will be at approx. 10,960' MD (8784'tvdss). 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. · Max hole angle of E-23b well plan is 91deg. RECEIVED Logging · An MWD Gamma Ray Icg will be run over all of the open hole section. · A memory cnl Icg will be run in the cemented 2 3/8" liner Hazards No lost cimulation is expected. Max. recorded H2S on E Pad in 2000 is 10 ppm. SEP 2000 Alaska 0~ & Gas Cons. Commission Anchorage Reservoir Pressure Res. pressure is estimated to be 3450 psi at 8800ss. Maximum surface pressure with gas (0.12 psi/ft) to surface is 2394 psi. 23a (. TREE: 3-1/8" - 5M ~"' BF. ELEV = 31.85' WELLHEAD: 13 5/8' 5M McEVOY ACTUATOR: Baker .... OTIS 'XDB' 2.75 ID 3 1/2 SSSV LANDING I NIPPLE 2203' L~O, BTRS FOC GA~ Lit' I CAMCO 3 1/2 X 1 1/2 MMG X WITH "RK' LATCHES N* MD{BKB) TVDss DEVI I KOP: 600' I MAX ANGLE: 93.2°O 11779' ' I =68 4= I 45 I 8227 6568 3 1/2' 9.2 #, L-80 NSCT 2.992" ID -- 0.0887 BBLS/FT i CSG PATCH- 2983' - 4405' '7 5/8" 29.7 # N-80 STL CSG BAKER PACKERS TOP PKR- MOD CPH BTTM PKR- MOD 3D wIT' UNERuNERTOP PKR I 8316' I HANGER [3.5' SWS NIPPLE (2.75' ID)(PARKE") I 10917' L-80, BTRS 7' BAKER PACKER : (FB-1)( 4.000 ID) 10920' WITH 14.43' SEAL BORE 3.5" SWS NIPPLE (2.75" ID)(PARKER)I 10942' 3.5" SWN NIPPLE I (2.75" ID)(2.625" NOGO) 10954' TOP OF SLO'I'rED 3 1/2" WLEG I 10966' LINER 7'.26~. ,SCC. L-80 I 11321' I [~ ELMD I 10960.5' '"7- X 4" TIW SS PACKER SCOOP PERFORATION SUMMARY AT 11206' MD REF LOG: Speny-Sun MWD (10-28-93) HORIZONTAL SECTION ~!ZE_'SPF _IN_T_ERVAL. )P_/_SOZ 4.5" SLOTTED MNER -.-,,~, . , ,.~v-,,,,u ur' (11327'-12276') · LINER DATE REV. BY COMMENTS PRUDHOE BAY UNIT 12-7-87 INITIAL COMPLETION WELL: E-23a (13-8-11-14) 11-7-93 M.UNDER SIDETRACK COMP. IX)YON 9 APl NO: 50-029-21763 SEC 6; T 11N; RG 14E 12-24-93 DGH SIDETRACK COMP. DOYON 14 08-17-98 RAC CTU ADD-PERFS BP Exploration (Alaska) ~IZE SPF INTERVAL :)P I SOZ ~"110 fl I IOIJ'l I IIU Ur' · RECEIVED SEP 1 3 2000 , Alaska ~ & Gas Cons. Commissio~ Anchorage TREE: 3-1/8"- 5M WELLHEAD: 13 5/8" 5M McEVOY ACTUATOR: Baker ( '-23b Pro Ised Com KB. ELEV = 68.05' BF. ELEV = 31.85' OTIS"XDB" 2.75 ID 3 1/2 SSSV LANDING NIPPLE I 2203' I 133/8", 72#/ft, I L-80, BTRS 2793' KOP: 600' MAX ANGLE: 93.2°@ 11779' 3 1/2" 9.2 #, L-80 NSCT 2.992" ID 0.0087 BBLS/FT 7" LINER TOP PKR I 8316, I W/LINER HANGER FOC GAS LIFT MANDRELS CAMCO 3 1/2 X 1 1/2 MMG X WITH "RK" LATCHES MD(BKB) TVDss DEV 5139 4268 43 8227 6568 45 CSG PATCH- 2983' - 4405' 7 518" 29.7 # N-80 STL CSG BAKER PACKERS TOP PKR- MOD CPH BTTM PKR- MOD 3D 9 5/8", 47#/ff, I8467, L-80, BTRS PERFORATION SUMMARY REF LOG: Sperry-Sun MWD (10-28-93) SIZE SPF INTERVAL )P / SQZ 2-1/8" 4 1130'-11170' OP I-TOC 10960 3.5" SWS NIPPLE (2.75" ID)(PARKER) 10917' 7" BAKER PACKER I I (FB-1)( 4.000 ID) 1 0920' WITH 14.43' SEAL BORE 3.5" SWS NIPPLE I I (2.75" ID)(PARKER) 10942' .. 3.5" SWN NIPPLE I 10954' I (2.75" ID)(2.625" NOGO) 3 1/2" WLEG 110966'1 ELMD I 10960.5' i IInflatable bridge plug l~ set at ~11190'md TOP OF SLO'I-rED LINER I 11206,I 7",26#, NSCC, L-80 111321,I HORIZONTAL SECTION 4.5" SLOTTED LINER (11327'-12276') 4.5" SLOTTED LINER 12300' 2 3/8" liner cemented to approx.10960'md 7" X 4" TIW SS PACKER SCOOP AT 11206' MD RECEIVED SEP 15 2000 Alaska Oi{ & Gas Cons. E-23b Potential Drilling Hazards Post on Rig 1. H2S is not expected on this well. There has not been an H2S reading above 10ppm on E-Pad in 2000. 2. BHP is estimated to be 3450psi@ 8800' tvdss. 3. Maximum anticipated well head pressure w/full column of gas 2394psi. . No major faults are anticipated in the planned polygon. Faults do exist, however, to the East and South of the polygon. The structural (depth) uncertainty is considered critical in this well and may require significant geosteering to land at the desired depth in the polygon. . Reservoir quality. If significant shale is drilled near the beginning or middle of the polygon there may be a decrease in WOB which will make geosteering more difficult. In this case a plugback may be necessary. RECEIVED SEP 15 2000 Alaska 0il & Gas Cons. Commission Anchorage E-23A Vertical Section 8460 85O0 8550 . 8600 8650 87OO 8760 8800 8650 89OO 0 500 Path Distance (Feet) 1,000 1,500 2,000 2,500 3,000 3,500 4,000 I .I I I I I I E-23b Case 106a 9111/00 Case 106 kicks off from a cement whipstock at 11,050' in the 7" csg. Exit window at 45 R Angle {~ K,O,= 78 deg MD:11050 Tot Drtd:1278 It Marker Depths GOdg Wellbore I 8,soolawo 17_2C [ 8,550]ft'rVD TSAD ] 8,3571 t TVD Kick Off 8,812 }ft TVD 11,050 Jif MD Deprtr OKO 5,649 ff 11,050[ 1278I 12,328J 8,8641 MD KO Pt MD New Hole Total MD TVD 'ID Curve 1 DLS deg/100 30 Tool Face 4,~ Length 30 Curve 2 20 90 30 Curve 3 20 110 120 Curve 4 20 70 Curve 5 10 90 Curve 6 10 -90 Drawn: 9/11100 19:24 Plan Name: Case 105 202 ,2801 i E-23A I 1 1,500 1-ZIB X distance from Sfc Loc ~.,000 2.,~ -6,500 IWell Nama E-23A J CLOSURE IDistance 6,502 ft 172 dog NEW HOLE E/W (X) N/S (Y) Kick Off 1,464 -5,440 'rb 870 ..6.44~ , State Plane 665,356 5,968,801 Surface Loc 664,486 5,975,244 DLS dogll00 Tool Face Length Curve I 30 45 :~0 Curve 2 20! 90 30 Curve 3 20 110 ' 120 · , Curve 4 20 70 202 Curve 5 10 90 99 Curve 6 10 -90 799 '%280 Dmwn: 9111100 19:24 Plan Name: Case 105 CDR1 Drilling Wellhead{,' tail E-23b ~ CT Injector Head Rig Floor ,~ Otis Q.C. thread half ~ Traveling plate 20.63' 1.95' 3.81 ;haffer Dual G~te' I · i:i . - Hydrill "B" 5,000 psi W R~t[n Type Dual Gate BOPE 7.35' 7" lubricator Traveling Plate 7" O.D. Jacking Frame Top Stationary Plate Annular BOP (Hydril),7-1/16" ID Annular BOP (Hydril),7-1/16" ID Top blind shea~ Bottom 2" pipes Top 2" slips Kill Line +-'~ Bottom 2 3/8" pipes Manual Master Valve ~ Tubing Hanger 9-5/8" Annulus 0.66' 1 Matt Ground Level 13-3/8" Annulus SEP 1 ~ 2000 Gas Cons. Commi46ion WELL PERMIT CHECKLIST ADMINIST.~~.~TIO~I 1. Permit fee attached ....................... A~;~ DATE E~GINEERING 2. Lease number appropriate ................... 3. Unique well name and'number .................. 4. Well located in a defined pool .................. 5. Well located proper distance from drilling unit boundary .... 6. Well located proper distance from other wells .......... 7. Sufficient acreage available in drilling unit ............ 8. If deviated, is wellbore plat included ............... 9. Operator only affected party ................... 10. Operator has appropriate bond in force ............. 11. Permit can be issued without conservation order ........ 12. Permit can be issued without administrative approval ...... 13. Can permit be approved before 15-day wait ........... 14. Conductor string provided ................... )N )N 15. Surface casing protects all known USDWs.. .......... 16. CMT vol adequate to circulate on conductor & surf csg ..... 17. CMT vol adequate to tie-in long string to surf csg ..... ~ . . . 18. CMT will cover all known productive horizons .......... 19. Casing designs adequate for C, T, B & permafrost ....... ~) N 20. Adequate tankage or reserve pit ................. 21. If a re-drill, has a 10-403 for abandonment been approved... ' 22. Adequate'wellbore separation proposed ............. (~) N 23. If diverter required, does it meet regulations .......... r¥ ,~ /ViCi. 24. Drilling fluid program schematic & equip list adequate ..... ~) N 25. BOPEs, do they meet.regulation ................ ~ N (~)N APPR DATE 26. 21t. 20. .GEOLOGY 30. 31. 32. DATE 33. "~'./.~'4~,(.,~ 34. ,ANNULAR DISPOSAL35. With proper cementing records, this plan (A) will contain waste in a suitable receiv~ ..... Y N APPR DATE (B) will not contaminate freshwaterfi.~3r--c~use drillil~"waste... Y N to surface; ~ ~ - . (C) will not impair mec~~yof~tb~wellused for dismissal; Y N (D) will not dama~oducing formatio~r impair~~m a Y N pool; and ~ will not circumvent 20 AAC 25.252 or 20 AAC 25.412. Y N GEOLOGY: ENGINEERIN~G: UlCiAnnular COMMISSIO~N: BOPE press rating appropriate; test to 7, E'00 psig. _~ N Choke manifold complies w/APl RP~53 (May 84) ......... ~ N Work will occur without operation shutdown ........... N Is presence of H2S gas probable ................. ~) N' Permit can be issued wlo hydrogen sulfide measures ..... . y~) Data presented on potential overpressure zones ....... /~ ~ Seismic analysis of shallow gas zones ........... ".~ ti Y N Seabed condition survey (if off-sho~e) ....... '. · ..~,,~.. ". Y N Contact name/phone for weekly progress reports [.~lomto~ only] Y N Comments/Instructions: '0 0 c:~msoffice~wordian~diana~checklist (rev. 02117/00) 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 APPEN. DIXi No 'special'effort has been made to chronologically organize this category of information. · ~as~o ~Tq o~ ~osuas o~ aup paSSoI ~ou se~ (GA&SS ,£~88) Q~ ,L0£~ o~ (GA&SS ,£~88) GR ,~Lg~I ~o~ Ie~a~UT eg& (8) '(GA&SS ,£~88) GR ,90L~l o~ G& s~sn~p~ uT-aT& '(GA&SS ,£~88) GR ,90~I o~ (GA&SS ,~88) G~ ,~60~I mo~ sas~n_~as ~umm~ pu-e i~uoT~sa~TG pazTiT~n 0I-8 '9 suu~ ~J~NI sagSnH ~a~8 (9) · T.m~ ~nou~aIS ~ UL~O~ad O~ sas~as ~umreo puw iwuo~sa~TG paz~i~n £ unH 0HANI saq6nH ~a~ (9) '(GAASS ,EI85) G~ ,I90II ~o~ iiT~p o~ puw '(GAASS ,II$8) G~ ,£90II ~w ~opu~ 5u~s~s aq~ II~m o~ SaD~A~aS ~UmmD pu~ I~UO~Da~ paz~I~n 9-I sunH 0HJ~II saqBnH aaZw~ (~) · w~P a~IWa~ s~ pa~uasa~d (XnfHD) ~wP Xw~ ~ummD II~ (£) -pa~ou as~aq~o ssaiun sq~daG ~ a~w sq~dap II~ (~) · pa~ou as~maaq~o ssaIun (G~) sq~da~ pa~nswa~ a~w sq~d~p II~ (I) uo~3d~DSa~ aniwA &IN/I'~HNI4# ~ooI~ uo~wuL~oguI xa~aurexw6~ UO~WUL~O~UI aclAA w~wG ~IN/I'NHNI4S aure~) ~ad audi auo 0~'I NOISHHA- pxwpu~S IIDS~ DoI Sq~O swI'uaIB :aI!M ~ow~xz 000'I uo!s~eA aide M=~u~M ~ooI~ uo~=Io~uI IIa~- :0N '6kn8/~ :0~'I 'SHHA uo~-~o~uI uo~s~aA- iiiiiiiiiiiiiiiiiii iiiiiiiiiiiiiiiiiii ~ GHODHH AN~40D SIq ~ I0 II£96 LI/LOIIO ~dw~ ~wu~xo~ ~amo~sno SI7 I0 IH~ LI/LO/IO 'ghl (9) The data presented here is final and has been depth shifted to a PDC (Primary Depth Control) supplied by BP Exploration (SWS, 10-Dec-00). (10) A magnetic Declination correction of 26.90 degrees has been applied to the Directional Surveys. MNEMONICS: GRAX -> Gan~na Ray MWD-API [MWD] (MWD-API units) ROPS -> Rate of Penetration, feet/hour TVD -> Subsea True Vertical Depth (SSTVD), feet SENSOR OFFSETS: RUN GAMMA DIRECTIONAL 1 2 3 4 5 6 7 8 9 10 25 78 ft 26 69 ft 25 52 ft 26 26 ft 26 26 ft 25 93 ft 26 74 ft 26 38 ft 26 38 ft 18 27 ft 18.14 ft 18.05 ft 17.88 ft 18.62 ft 18.62 ft 18.29 ft 19.14 ft 18.78 ft 18.78 ft 18.80 ft CURVE SHIFT DATA BASELINE 11118.2 11136.7 11176.9 11183.0 11193.4 11208.4 11214.4 11227.2 11250.7 11608.2 11654.9 11664.0 11674.9 11718.8 11741.9 11835.5 11849.9 11865.9 11875.9 11909.0 11937.6 11949.7 11961.9 11985.1 12031 1 12071 9 12092 8 12099 2 12109 9 12179 4 12378 6 12476.1 12495.7 12520.5 12561.3 12571.3 12604.7 12657.2 EOZ END MEASURED, 11120 3 11136 9 11175 1 11183 2 11194 2 11200 5 11204 7 11228 4 11252 8 11611 9 11656 9 11666 7 11686 3 11720 5 11741 7 11836 3 11855 3 11867 8 11876 5 11909 7 11936 5 11950 9 11963 0 11987 2 12029 4 12072 2 12091 7 12099 7 12107 9 12181 1 12382 2 12481 5 12498 2 12523 8 12565 7 12574 7 12605 7 12651 8 DISPLACEMENT 2.08301 0.208984 -1.875 0.208008 0.833008 -7.91699 -9.79199 1.25 2.08398 3.75 2.08301 2.70801 11.459 1.66602 -0.208008 0.833008 5.41699 1.875 0.625 0.625 -1.04199 1.25 1.04199 2.08301 -1.66699 0.208008 -1.04199 0.416992 -2.08398 1.66602 3 54199 5 41699 2 5 3 33301 4 375 3 33301 1 04102 -5.41602 BASE CURVE: GROH, OFFSET CURVE: GRAX Tape Subfile: 1 123 records... Minimum record length: Maximum record length: 8 bytes 132 bytes **** FILE HEADER **** MWD .001 1024 *** INFORMATION TABLE: CONS MNEM VALU WDFN mwd.xtf LCC 150 CN BP Alaska, Inc. WN E-23B FN Prudhoe Bay Unit COLIN North Slope STAT Alaska *** LIS COMMENT RECORD *** !!!!!!!!!!!!!!!!!!! Remark File Version 1.000 1. The data presented has been edited from the field raw data. 2. The data has been depth shifted to match the PDC supplied by BPX 3. The PDC used is a Schlumberger Gamma Ray dated 10-Dec-00. *** INFORMATION TABLE: CIFO MNEM CHAN DIMT CNAM ODEP 1 GR GRAXl2 0.0 2 ROP ROPS12 0.0 * FORMAT RECORD (TYPE# 64) Data record type is: 0 Datum Frame Size is: 12 bytes Logging direction is down (value= 255) Optical Log Depth Scale Units: Feet Frame spacing: 0.500000 Frame spacing units: [F ] Number of frames per record is: 84 One depth per frame (value= 0) Datum Specification Block Sub-type is: FRAME SPACE = 0.500 * F ONE DEPTH PER FRAME Tape depth ID: F 2 Curves: Name Tool Code Samples Units 1 GR MWD 68 1 API 2 ROP MWD 68 1 F/HR Total Data Records: 41 Size 4 4 Length 4 4 8 Tape File Start Depth = 11002.000000 Tape File End Depth = 12706.000000 Tape File Level Spacing = 0.500000 Tape File Depth Units = feet **** FILE TRAILER **** Tape Subfile: 2 50 records... Minimum record length: Maximum record length: 54 bytes 4124 bytes **** FILE HEADER **** MWD .002 1024 *** INFORMATION TABLE: CONS MNEM VALU WDFN mwd.xtf LCC 150 CN BP Alaska,Inc. WN E-23B FN Prudhoe Bay Unit COUN North Slope STAT Alaska *** LIS COMMENT RECORD *** !!!!!!!!!!!!!!!!!!! Remark File Version 1.000 The data presented here is the unedited field raw data. *** INFORMATION TABLE: CIFO MNEM CHAN DIMT CNAM ODEP 1 GRAX GRAX 0.0 ROPS 0.0 2 ROPS * FORMAT RECORD (TYPES 64) Data record type is: 0 Datum Frame Size is: 12 bytes Logging direction is down (value= 255) Optical Log Depth Scale Units: Feet Frame spacing: 0.500000 Frame spacing units: [F ] Number of frames per record is: 84 One depth per frame (value= 0) Datum Specification Block Sub-type is: FRAME SPACE = 0.500 * F ONE DEPTH PER FRAME Tape depth ID: F 2 Curves: Name Tool GRAX MWD ROPS MWD Code Samples Units Size 68 1 API 4 68 1 F/HR 4 Total Data Records: 41 Tape File Start Depth = 11002.000000 Tape File End Depth = 12706.000000 Tape File Level Spacing = 0.500000 Tape File Depth Units = feet **** FILE TRAILER **** Tape Subfile: 3 50 records... Minimum record length: Maximum record length: 54 bytes 4124 bytes **** TAPE TRAILER **** MWD 01/07/17 94311 01 **** REEL TRAILER **** MWD 01/07/17 BHI 01 Tape Subfile: 4 Minimum record length: Maximum record length: 2 records... 132 bytes 132 bytes Length 4 4 8 Tape Subfile 1 is type: LIS Tape Subfile 2 is type: LIS DEPTH GR 11002.0000 -999.2500 11002.5000 -999,2500 11100,0000 27,8881 11200.0000 114.8469 11300,0000 45.6794 11400,0000 44.2080 11500.0000 38.8408 11600,0000 53,7900 11700,0000 137.3067 11800,0000 83.8008 11900,0000 83,9630 12000,0000 95,2274 12100.0000 97.4176 12200,0000 40,2677 12300.0000 33.8209 12400.0000 -999.2500 12500.0000 51,1823 12600,0000 -999.2500 12700.0000 -999.2500 12706,0000 -999,2500 ROP -999.2500 -999,2500 97,1171 31.4961 69,3270 24 3102 124 7264 53 3447 32 6706 75 5024 72 9860 48 2268 41 5539 85 8299 63 8552 122 4377 102 9030 152 6918 -776,7999 -999.2500 Tape File Start Depth = 11002,000000 Tape File End Depth = 12706,000000 Tape File Level Spacing = 0,500000 Tape File Depth Units = feet Tape DEPTH 11002 11002 11100 11200 11300 11400 11500 11600 11700 11800 11900 12000 12100 12200 12300 12400 12500 12600 12700 12706 Subfile 3 is type: LIS ,0000 ,5000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 GRAX -999,2500 -999 2500 52 8280 121 7970 43 4000 41 5760 41 7810 65 6370 123 0600 89 8390 85 7360 97 6340 97 3620 41 5520 32.9260 -999,2500 26.4260 -999,2500 -999,2500 -999.2500 ROPS ~999.2500 -999,2500 45.4210 55.8620 72,6620 106,5320 125,2380 49,5920 40.2930 75,4500 70,9350 45,7830 57.5840 39,8490 112.3640 101,5600 161,2470 172.4420 146,6450 -999,2500 Tape File Start Depth = 11002.000000 Tape File End Depth = 12706,000000 Tape File Level Spacing = 0,500000 Tape File Depth Units = feet Tape Subfile.4 is type: LIS
