The URL can be used to link to this page

Home My WebLink About206-038Image Project Well History File Cover Page 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. '~~ ~ - Q~ ~ Well History File Identifier Or anizin aone> ^ Two-sided III II'III VIII II III ^ Rescan Needed III II'lII II II III III g 9~ RES AN DIG TAL DATA OVERSIZED (Scannable) Color Items: Diskettes, No. { ^ Maps: ^ Greyscale Items: ^ Other, No/Type: ^ Other Items Scannable by a Large Scanner ^ Poor Quality Originals: OVERSIZED (Non-Scannable) ^ Other: ^ Logs of various kinds: NOTES: ^ Other:: Date: /s/ BY: Mana d IIIIIIIIIIIIIIIIIII Project Proofing BY. Maria date: Q /s/ Scannin Pre aration ~ x 30 = ~d + =TOTAL PAGES /~ g p Count does not include cover sheet) BY: _ Maria Date: I /~ I / lsl Production Scanning Stage 1 Page Count from Scanned File: ~ (Count does include cover sheet) Page Count Matches Number in Scanning Preparation: YES NO BY: Maria Date: //~, ~ `~ /s/ ~ n~ V Y lk NO Stage 1 If NO in stage 1, page(s) discrepancies were found: YES gY: Maria Date: /s/ IIIIIIIIII nnin is com lete at this Dint unless rescanrnng is required. II I II I) I I Sca g p P ReScanned III 111111 VIII V III BY: Maria Date: /s/ mments about this file: Quality Checked III II'lll III II'I III Co 10/6/2005 Well History File Cover Page.doc ~ ~ w .. ~ ~ r ~.- x__ ~w- . . y~ . ,~; ;, ~, ~. ~. Y~ os`~rY x*~. . vim, ~t~~ . MICROFILMED 6/30/2010 DO NOT PLACE ANY NEW MATERIAL UNDER THIS .PAGE C:\temp\Temporary Internet Files\OLK9\Microfilm_Marker.doc DATA SUBMITTAL COMPLIANCE REPORT 1/6/2010 Permit to Drill 2060380 Well Name/No. PRUDHOE BAY UNIT Z-01A Operator BP EXPLORATION (ALASKIy INC API No. 50-029-21830-01-00 MD 11240 TVD 9013 Completion Date 12/19/2007 Completion Status SUSP Current Status P&A UIC N REQUIRED INFORMATION Mud Log No Samples No Directional Survey Yes DATAINFORMATDN Types Electric or Other Logs Run: MWD DIR, GR, RES (data taken from Logs Portion of Master Well Data Maint Well Log Information: Log/; Electr D ~a Digital Dataset Log Log Run Interval OH / pe Med/Frmt Number Name Scale Media No Start Stop CH Received Comments ED D Asc Directional Survey Open 11/13/2006 PB 1, PB 2, PB 3 on one disk pt .-,A.se~ Directional Survey 10300 11813 Open 11/13/2006 PB 1 pt Directional Survey 10594 12325 Open 11/13/2006 PB 2 pt Directional Survey 10300 11240 Open 11/13/2006 PB 3 ~t LIS Verification 10330 11814 Open 8/3/2007 P61 LIS Veri, GR, ROP w/Graphics Meta and Tif Log Induction/Resistivity 25 Blu 10348 11814 Open 8/3/2007 P61 MD Multi Prop Resistivity, GR 17-Oct-2006 og Induction/Resistivity 25 Blu 10348 11814 Open 8/3/2007 PB1 TVD Multi Prop Resistivity, GR 17-Oct-2006 ~I og Gamma Ray 25 Blu 10348 11814 Open 8/3/2007 PB1 MD GR 17-Oct-2006 I, Rpt LIS Verification 10330 12325 Open 8/3/2007 PB2 LIS Veri, GR, ROP w/Graphics Meta and Tif og Induction/Resistivity 25 Blu 10348 12325 Open 8/3/2007 PB2 MD Multi Prop Resistivity, GR 25-Oct-2006 og Induction/Resistivity 25 Blu 10348 12325 Open 8/3/2007 PB2 TVD Multi Prop Resistivity, GR 25-Oct-2006 og Gamma Ray 25 Blu 10348 12325 Open 8/3/2007 P62 MD GR 25-Oct-2006 pt LIS Verification 10330 11240 Open 8/3/2007 P63 LIS Veri, GR, ROP w/Graphics Meta and Tif s • DATA SUBMITTAL COMPLIANCE REPORT 1/6/2010 Permit to Drill 2060380 Well Name/No. PRUDHOE BAY UNIT Z-01A Operator BP EXPLORATION (ALASKIy INC API No. 50-029-21830-01-00 M ~ rz4u ~ vu au is l:OmplellOn Uaie 1L/"Iy/LUU/ GOmpleLlOn aIHIUS guar ~,urrem araius ra.H vw rv og Induction/Resistivity 25 Blu 10348 11240 Open 8/3/2007 P63 MD Multi Prop Resistivity, GR 25-Oct-2006 og Induction/Resistivity 25 Blu 10348 11240 Open 8/3/2007 P63 TVD Multi Prop Resistivity, GR 25-Od-2006 og Gamma Ray 25 Blu 10348 11240 Open 8/3/2007 P63 MD GR 25-Oct-2006 D C Lis 15323 Induction/Resistivity 10330 11814 Open 8/3/2007 P61 LIS Veri, GR, ROP w/Graphics Meta and Tif D C Lis 15324 Induction/Resistivity 10330 12325 Open 8/3/2007 PB2 LIS Veri, GR, ROP w/Graphics Meta and Tif ED C Lis 15325 Induction/Resistivity 10330 11240 Open 8/3/2007 P63 LIS Veri, GR, ROP i w/Graphics Meta and Tif Well Cores/Samples Information: Name Sample Interval Set Start Stop Sent Received Number Comments ADDITIONAL INFOR(M'A7T~ION Well Cored? Y'/lam Daily History Received? ~, ~N~ Chips Received? '47#- Formation Tops ><:~" Analysis 1?7' 1~ Received? Comments: Compliance Reviewed By: Date: ~~"-- - `~ < STATE OF ALASKA -~~~ ALASK~IL AND GAS CONSERVATION COM~SION ~O1 ` ~ WELL COMPLETION OR RECOMPLETION REPORT AND LOG 1 a. Well Status: ^ Oil ^ Gas ^ Plugged ®Abandoned ^ Suspended zoAAC zs.,os zoAAC zs.,,o ^ GINJ ^ WINJ ^ WDSPL ^ WAG ^ Other No. of Completions Zero 1 b. Well Class: ®Development ^ Exploratory ^ Service ^ Stratigraphic 2. Operator Name: BP Exploration (Alaska) Inc. 5. Date Comp., Susp., or Aband. 11/22/2008 12. Permit to Drill Number 206-038 - 308-222 3. Address: P.O. Box 196612, Anchorage, Alaska 99519-6612 6. Date Spudded 10/13/2006 13. API Number 50-029-21830-01-00 - 4a. Location of Well (Governmental Section): Surface: ' ' 7. Date T.D. Reached 11/02/2006 14. Well Name and Number: PBU Z-01A. 977 FNL, 3456 FEL, SEC. 19, T11N, R12E, UM Top of Productive Horizon: N/A 8. KB (ft above MSL): 91.7' ~ Ground (ft MSL): 54.13' 15. Field /Pool(s): Prudhoe Bay Field % Prudhoe Bay Total Depth: 4920' FNL, 608' FEL, SEC. 24, T11 N, R11 E, UM 9. Plug Back Depth (MD+TVD) 10336' - 8767 - Pool 4b. Location of Well (State Base Plane Coordinates, NAD 27): Surface: x- 599221 y- 5959100 Zone- ASP4 10. Total Depth (MD+TVD) 11240' - 9013' ' 16. Property Designation: ADL 028245 TPI: x- N/A y_ N/A Zone- ASP4 - 5955129 Zone- ASP4 Total De th: x- 597167 11. SSSV Depth (MD+TVD) N/A 17. Land Use Permit: y p 18. Directional Survey ^ Yes ®No r' i r 2 AA 19. Water depth, if offshore N/A ft MSL 20. Thickness of Permaftost (TVD): 1900' (Approx.) 21. Logs Obtained (List all logs here and submit electronic and printed information per 20 AAC 25.071): MWD DIR, GR, RES 22. CASING, LINER AND CEMENTING RECORD CASING $ETTtNG DEPTH MD SETTING DEPTH TVD HOLE AMOUNT WT. PER FT. GRADE TOP BOTTOM TOP BOTTOM SIZE CEMENTING RECORD PULLED " C u r 11 1 ' 1 / " ~ _ ~~ 7" 2' 1 7' -1 2 I ' 23. Open to production or inject ion? ^ Yes ®No 24. TUBING RECORD If Yes, list each i (MD+TVD of To 8 Bottom Pe nterval open rforation Size and Number): SIZE DEPTH SET MD PACKER SET MD p ~ ; 41/2", 12.6#, 13Cr80 10079' 9781' MD TVD MD TVD 25. ACID, FRACTURE, CEMENT SQUEEZE, ETC. DEPTH INTERVAL MD AMOUNT Si KIND OF MATERIAL USED 10343' Set Whipstock (2006) 10348' Mill Window (TOW at 10348') (2006) 10336' P8~A w/ 21 Bbls Cement (2006) 2500' Freeze Protect w/ Diesel (2006) 26. PRODUCTION TEST Date First Production: Not on Production Method of Operation (Flowing, Gas Lift, etc.): N/A Date Of Test: HOUrS Tested: PRODUCTION FOR TEST PERIOD OIL-BBL: GAS-MCF: WATER-BBL: CHOKE SIZE: GAS-OIL RATIO: Flow Tubing Press. Casing Press: CALCULATED 24-HOUR RATE• OIL-BBL: GAS-MCF: WATER-BBL: OIL GRAVITY-API (CORK): 27. CORE DATA Conventional Core(s) A uired? ^ Yes ®No Sidewal l Core s A uired? ^ Yes ®No If Yes to either question, list formations and intervals cored (MD+TVD of top and bottom of each), and surlimarize lithology and presence of oil, gas or water (submit separate sheets with this form, if needed). Submit detailed descriptions, core chips, photographs and laboratory analytical results per 20 AAC 250.071. :_~~~~~, None "; I" ~ F corm iv-ao~ Kevtsed ozrloo~ O U lDE 28. GEOLOGIC MARKERS (LIST ALL FORMATIONS AW RS ENCOUNTERED): 29. FORMATION TESTS NAME ` MD TVD Well Tested? ^ Yes ®No Permafrost Top If yes, list intervals and formations tested, briefly summarizing test results. Attach separate sheets to this form, if needed, and submit Permafrost Base detailed test information per 20 AAC 25.071. Zone 3 11056' 8954' None Formation at Total Depth (Name): Zone 3 11056' 8954' 30. List of Attachments: Summary of Daily Drilling Reports, Well Schematic Diagram 31. I hereby certify that the foreg ing is true and corcect to the best of my knowledge. ~Z~ 17ID~ Signed Terrie Hubble Title Drilling Technologist Date PBU Z-01 A 206-038 308-222 Prepared ey IVamenvumber. Terrie Hubble, 564-4628 Well Number rmi N . / r v I N Drilling Engineer: Sean McLaughlin, 564-4387 INSTRUCTIONS GeNeRAI: This form is designed for submitting a complete and correct well completion report and log on all types of lands and leases in Alaska. Submit a well schematic diagram with each 10-407 well completion report and 10-404 well sundry report when the downhole well design is changed. IreM 1a: Classification of Service Wells: Gas Injection, Water Injection, Water-Alternating-Gas Injection, Salt Water Disposal, Water Supply for Injection, Observation, or Other. Multiple completion is defined as a well producing from more than one pool with production from each pool completely segregated. Each segregated pool is a completion. ITeM 4b: TPI (Top of Producing Interval). ITeM 8: The Kelly Bushing and Ground Level elevation in feet above mean sea level. Use same as reference for depth measurements given in other spaces on this form and in any attachments. ITeM 13: The API number reported to AOGCC must be 14 digits (ex: 50-029-20123-00-00). ITeM 20: Report true vertical thickness of permafrost in Box 20. Provide MD and TVD for the top and base of permafrost in Box 28. ITeM 22: Attached supplemental records for this well should show the details of any multiple stage cementing and the location of the cementing tool. ITeM 23: If this well is completed for separate production from more than one interval (mutiple completion), so state in item 1, and in item 23 show the producing intervals for only the interval reported in item 26. (Submit a separate form for each additional interval to be separately produced, showing the data pertinent to such interval). IreM 26: Method of Operation: Flowing, Gas Lift, Rod Pump, Hydraulic Pump, Submersible, Water Injection, Gas Injection, Shut-In, or Other (explain). ITeM 27: Provide a listing of intervals cored and the corresponding formations, and a brief description in this box. Submit detailed description and analytical laboratory information required by 20 AAC 25.071. ITeM 29: Provide a listing of intervals tested and the corresponding formation, and a brief summary in this box. Submit detailed test and analytical laboratory information required by 20 AAC 25.071. Form 10-407 Revised 02/2007 Submit Original Only • Z-01 A, WeII History (Pre Rig Sidetrack) Date Summary 7/14/2008 TIO= NA/0/290. SI. IA FL (pre- MIT-IA for CTD). FB call in. IA FL ~ 72' (4 bbls). No piping, electrical or scaffolding in well house. 7/16/2008 T/I/O 2390/0/360 Temp= S/I MIT IA PASSED to 3000 asi. (PRE RWO) Pressured up IA w/ 10.5 bbls of crude to reach 3000 psi. 1st 15 mins IA lost 60 psi, 2nd 15 mins IA lost 30 psi for a total loss of 90 psi in 30 min test. Bled back 8 bbls. Final WHPs= 2400/0/360. Notified operator upon departure. Valve position as follows; Swab =closed, Wing =closed, SSV =open, Master =open, IA and OA valves open to gauges. 7/26/2008 T/IA/OA= No gauge/0/0 Temp= 40 PPPOT-T (PASS) (Pre CTD) PPPOT-T RU 1 HP BT onto THA void 0 psi, verified with SBS. Flushed void until clean returns achieved. Pressured to 5000 psi for 30 minute test, 4900/ 15 minute, 4900/ 30 minutes. Bleed void to 0 psi RD test equipment, re-installed Alemite cap. Cycled LDS out 1.5" ran in torqued to 500 ft/Ibs "Standard" all were in good working and visual condition. 11/12/2008 T/I/O = 2400/0/210. Temp = SI. WHPs, IA FL (pre CTD). AL line & F/L removed. T FL @ or near Sta #6, 5073' (272 bbl). SSV & MV open. IA & OA valves OTGs. WV & SV closed. 11/13/2008 T/I/O = 2400/0/200. Temp = SI. WHPs pre-CTD (eval for TBG bleed). No AL. Flowline disconnected. TBG FL Q 4950' (above sta #6) (80 bbls). IA FL C~3 surface. '*Note: Nearest location to bleed to production is Z-04 (3 wells down). Suggest bleed to CLP then to DHD upright. SV, WV = C. SSV, MV = O. IA, OA = OTG. NOVP. 11/14/2008 T/I/0=2380/0/210. Temp=S1. Bleed WHPs to 0 psi (pre-CTD). AL line & flowline removed. TP decreased 20 psi, IA & OA unchanged overnight. TBG FL @ 5073' (272 bbls). Bled TP to production (Z- 04) from 2380 psi to 1800 psi in 2 hrs & fluid came to surface.. Shut in TBG bleed & monitored 30 mins. TP increased 500 psi to 2400 psi. TBG FL near surface. Final WHPs = 2400/0/210. SV=Closed. MV, SSV=Open. IA & OA=OTG. NOVP. 11/15/2008 T/I/O = 2550/0/260. (CTD Prep) MIT-T to 3000 psi. "`"JOB POSTPONED""' Final WHP= 2550/0/260. Tree valves area as follows: SV,WG=closed. SSV,MV,IAV,OAV,= open. Valves positions verified w/ FO. 11/15/2008 Rig Up (CTD Prep) On site safety drill. Review possible pinch points before starting the job. 11/16/2008 T/I/0= 2500/20/260. (CTD Prep) MIT-T'PASSED' to 3000 ~, Pumped 10 bbls of neat and 5.5 bbls of diesel to achieve test pressure. Lost 30 psi / 1st 15 min & 10 psi / 2nd 15 min. TBG lost 40 psi during the 30 minute test. Bled back -14 bbls and started getting gas. Final WHP = 2400/20/260. Annulus casing valves are open to gauges .Tree valve positions verified with F/O at permit closure. 11/19/2008 T/I/0=2500/0/210. SI. Bleed TBG & IA to 0 psi (eval TBG re-pressurization) (CTD). Passed MIT-T on 11- 16-08. TBG FL @ 9446' (144 bbls). IA FL Q surface. Bled to well Z-04. Bled TBG from 2500 psi to 2050 psi in 1 hour. Fluid to surface. IAP increased to 400 psi. Continued bleeding for 1 hour. TBGP increased to 2300 psi during bleed and went back to gas. IAP increased to 600 psi. Bled for 1 more hour with TBGP increasing to 2480 psi and IAP increasing to 720 psi. Monitored 1 hour. TBG FL C~ 10079' (TBG Tail). TBGP increased to 2610 psi. OAP decreased to 580 psi. Final WHPs=2610/580/210. SV,WV =closed. MV, SSV =open. IA & OA OTG. 11/20/2008 T/I/O 2750/0/200 Set 4 1/16' ciw h bpv for pre rig, used 1-2' ext tag at 104' no problems. Page 1 of 1 • BP EXPLORATION Page 1 of 7 Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Spud Date: 6/28/1988 Event Name: REENTER+COMPLETE Start: 11/21/2008 End: 11/27/2008 Contractor Name: NORDIC CALISTA Rig Release: 11 /27/2008 Rig Name: NORDIC 1 Rig Number: Date ~' From - To Hours Task Code j NPT ~ Phase Description of Operations 11/20/2008 23:00 - 00:00 1.00 MOB P PRE PJSM with security, Nordic, toolservice and BP. Started Turnkey rig move from E-326 to Z-01 B at 2315 hrs. 11/21/2008 00:00 - 11:30 11.50 MOB P PRE Turnkey rig move from E-32B to Z-01 B, 16.7 miles, arrived on Z Pad at 10:15 hrs, 11:30 - 12:30 I 1.001 RIGU I P I I PRE 12:30 - 13:45 1.25 BOPSU P PRE 13:45 - 14:45 1.00 BOPSU P PRE 14:45 - 16:30 1.75 BOPSU P PRE 16:30 - 22:00 5.50 BOPSU P PRE 22:00 - 00:00 2.00 RIGU P PRE 11/22/2008 00:00 - 02:45 2.75 RIGU P PRE 02:45 - 04:15 1.50 RIGU P PRE 04:15 - 04:30 ~ 0.25 ~ BOPSUf~ P ~ ~ PRE 04:30 - 05:45 1.251 BOPSUF{ P PRE 05:45 - 07:00 1.251 STWHIPI P WEXIT 07:00-08:15 1.25STWHIPP (WEXIT 08:15-09:45 1.50 STWHIP P WEXIT 09:45 - 10:15 0.50 KILL P WEXIT 10:15 - 11:45 1.50 KILL P WEXIT PJSM on back over well, high pressure, assigned specific duties to individuals and established good communications Prep well cellar with drip pan, spot rig over well Accepted Rip at 11:30 hrs on 11-21-08, secured cellar, spot cutting box, install outside ops cab stairs NU BOP Stack, rotary pan sitting on annular ND BOP stack, remove 2' riser NU BOP Stack, change out lubricator extension RU hardline in reel, install pressure bulk head Perform Koomey draw down, tested H2S and Methane Alarms, Test Lower 2 3/8" combi's 250 -3500psi, test inside kill valve, failed, test outside kill valve 250 - 3500psi, greased inside kill valve, Inside kill valve tested OK. Finished the rest of the tests, OK. BOP Test witnessed by AOGCC Chuck Shevie Install internal grapple and pull test. Pull 2-3/8" E-Coil into injecter. Change out pack-off and stab coil thru pack-off. Boot E-line and insert into end of coil. Reverse circ 5 bbl MEOH thru kill line into coil. Reverse circ 2# Biozan into coil. 2.6 bpm, 1000-2000 psi. Press test inner reel valve, chart test at 250/3500 psi. Pump slack management. Rev Circ at 3.6 bpm, 4 times. Did not hear E-Line movement. SAFETY MEETING. Review procedure, hazards and mitigation for Press testing lubricator and pulling BPV with 2500 psi on well. Rio up lubricator and press test with 3500 psi. Open master valve. Pull back press valve. Well had 2650 psi SIWHP. Close Master and swab valves. Rig down lubricator. Cut coil back to expose 6' of E-Line. Cut off 10" coil. Boot end ~' of E-Line. Rev Circ MEOH into end of coil to prevent freeze up. o-ring on lubricator leaking, replaced same, rev circ 5 bbls of McOH PJSM on installing SLB dipple CTC, discussed hand placement from potential pinch points, Installed SLB dipple CTC, connection moved, readjust and tighten CTC, pull test to 40K MU nozzle BHA #1, install UOC, ohm and meg test eline, OK, MU blind box, x-o and nozzle, OAL - 6.72', Stabbed Injector PJSM discussing high pressure pumping, job assignment, securing area and good communication Pressure test lubricator to 3750 psi, good, open tree, pressure rnncea: izisizuuo izzu:iorm BP EXPLORATION Page 2 of 7 Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Spud Date: 6/28/1988 Event Name: REENTER+COMPLETE Start: 11/21/2008 End: 11/27/2008 Contractor Name: NORDIC CALISTA Rig Release: 11/27/2008 Rig Name: NORDIC 1 Rig Number: Date From - To Hours ', Task Code NPT (Phase Description of Operations 11/22/2008 10:15 - 11:45 1.50 KILL P WEXIT equalize at 2626 psi, IA Opsi, OA 161 psi, pump down kill line with 40bbls at 3.9 bpm, 2626 -3800 psi, Shut down, line up to tiger tank, flowback thru choke, pressure dropped to 2300 psi, mostly gas 11:45 - 14:30 2.75 KILL P WEXIT RIH tapped up at 10347', .44 - .15bpm, 3000 - 530psi, choked pressure 2400 - 2200 psi, taken returns to tiger tank, closed choke, shut in pressure 2175psi, Dn Wt 15.ik, UP Wt 42.Ok 14:30 - 17:00 2.50 KILL P WEXIT Circ on bottom at 10347' with 1.6bpm, 1289 psi, choked pressure 2300psi, micro motion plugged off, by-pass same, Circ at 1.12bpm, 1650psi, choked pressure 2500psi, displaced well to 8.9 KCL with 2 b bio Shut down pumps, Shut in well on choke BPM Bbls PSI Choke Psi 1.16 20 2950 3200 0.70 40 3600 3500 Pack-off not holding hydraulic pressure, closed upper 2 3/8" combi's, Notified AOGCC Chuck Sheve with courtesy call for closing upper combi's. Will pressure test same once out of hole. 0.70 60 3250 2250 1.41 80 1625 250 2.0 100 3200 1200 2.0 120 3315 1290 17:00 - 17:15 0.25 KILL P WEXIT Monitor well pressure built to 200psi, cleaned and cleared out micro motion with air 17:15 - 19:00 1.75 KILL P WEXIT Circ thru open choke to tiger tank, 0.89 - 1.6bpm, 1800 - 2500psi, choke pressure 300 - 875psi, 8.9ppg MW in /out, O en choke. Circ with 0 WHP. O en u er combi rams. 19:00 - 20:00 1.00 KILL P WEXIT RIH to 10341'. Circ bottoms up, 108 bbls at 3 bpm, 2700 psi. In and out density at 8.9 ppg. Flow check. No flow. 20:00 - 21:30 1.50 KILL P WEXIT POH while circ at 1.7 bpm. in /out density at 8.9 ppg. No gas in returned Biozan. 21:30 - 21:45 0.25 KILL P WEXIT SAFETY MEETING. Review procedure, hazards and mitigation for testing combi rams and M/U milling BHA. Did 15 min flowcheck during PJSM. Well is dead. 21:45 - 23:00 1.25 BOPSU P WEXIT Press test upper 2-3/8" compi rams with 250 and 3500 psi. Good test. Chart test. Tested packoff to 4000 psi, OK. Change out pack-off. Old 5-~~- ackoff was OK. Installed new one. ~p~4 23:00 - 00:00 1.00 CLEAN P WEXIT M/U milling BHA #2 with 3.80" Diamond mill and string mill, motor, 2 jts PH6 and CoilTrak tools. 11/23/2008 00:00 - 00:30 0.50 CLEAN P WEXIT M/U 3.80" cement milling BHA #2. BHA OAL = 120.41'. Test CoilTrak tools at surface. 00:30 - 02:30 2.00 CLEAN P WEXIT RIH with milling BHA #2. Circ at 0.2 bpm, 1090 psi. 02:30 - 03:00 0.50 CLEAN P WEXIT Log GR tie-in with GR from mother well bore. -1.5 ft CTD. 03:00 - 03:45 0.75 CLEAN P WEXIT Ream down with 3.80" mill. 2.5 bpm, 3000 psi. Top of whipstock at 10343' Top of window at 10, 347'. No cement above top of window. Window are was clean, no motor work, no WOB. RIH with 12K down wt, Printetl: 1Z/8/2008 1"L:L0:18 F'M /VELLHEAD = CIW 4CTUATOR = BAKER C <B. ,ELEV = 91.73' 3F. ELEV = 57.28' <OP - 3000' Vlax Angle = 60° @ 10525' datum MD = 10538' datum TVD = 8800' SS 113-3/8" CSG, 68#, L-80 BUTT, ID = 12.415" I IL~ Minimum ID = 2.30" @ 9964' ALLUMINUM PROFILE IN DEPLOY SLV Z-01 B SAF~NOTES: *** 4-U2" CHROMETBG & 2-7/8" LNR *** C 7" LNR TALLY'S MISSING**** 2013' -~4-1/2" HES X NIP, ID = 3.813" GAS LIFT MANDRELS ST MD TV D DEV TYPE V LV LATCH PORT DATE 8 2496 2496 0 MMG DOME RK 16 12/08/08 7 4288 4170 34 MMG SO RK 30 12/08/08 6 5073 4778 41 MMG DMY RK 0 10/09/06 5 6108 5568 39 MMG DMY RK 0 10/09/06 4 7314 6479 41 MMG DMY RK 0 10/09/06 3 8226 7187 40 MMG DMY RK 0 10/09/06 2 8967 7730 44 MMG DMY RK 0 10/09/06 1 9669 8250 39 MMG DMY RK 0 10/09/06 9740' I-I4-1/2" HES X NIP, ID = 3.813" 9761' -14-1/2" HES SYMPHONY GAUGES TOP OF 7" LNR ESTIMATED TOP OF CEMENT 4-1/2" TBG, 12.6#, 13CR-80 VAM TOP, .0152 bpf, ID = 3.958" 9-5/8" CSG, 47#, NT-80S, ID = 8.681" 3-1/2" LNR, 8.81#, 13CR-80 STL, .0087 bpf, ID = 2.992" WHIPSTOCK (XX/XX/XX?) RA TAG I 10079' I 10~ 333' u 10343' 10353' PERFORATION SUMMARY REF LOG: CNL/ GR/ CCL ON 11/26/08 ANGLE AT TOP PERF: 57° @ 10637' Note: Refer to Production DB for historical perf data SIZE SPF INTERVAL Opn/Sqz DATE 2" 6 10637 - 10652 O 11/26/08 2" 6 10667 - 10692 O 11/26/08 2" 6 10715 - 10720 O 11/26/08 2" 6 10735 - 10740 O 11 /26/08 ~" LNR, 26#, L-80 BUTT, .0383 bpf, ID = 6.276" CARRIER w / I-WIRE, ID = 3.994" I 9781' 9-5/8" X 4-1/2" BKR S3 PKR, ID = 3.958" 9805' 4-112" HES X NIP, ID = 3.813" 9920' 9-5/8" X 7" LNR TOP PKR, ID = ? 9953' 3.70" DEPLOY SLV, ID = 3.00" 9964' ALLUMINUM PROFILE IN DEPLOY SLV, ID = 2.30" 10079' 4-1/2" WLEG, ID = 3.958" 10333' --~ 3-1/2" X 2-7/8" XO PIN, ID = 2.441" MILLOUT WINDOW (Z-01 B) 10348' - 10355' PBTD H 10904' 2-7/8" LNR, 6.16#, 13CR-80 STL, .0058 bpf, ID = 2.441" DATE REV BY COMMENTS DATE REV BY COMMENTS 07/23/88 AUDI 2 ORIGINAL COMPLETION 12/15/08 SMM/PJC FINAL DRAFT CORRECTIONS 11/04/06 NORDIC 2 RWO 11/04/06 NORDIC 2 CTD SUSPENDED (Z-01A) 11/26/08 NORDIC 1 CTD SDTRCK (Z-01 B) 12/06/08 ?/ PJC DRLG DRAFT CORRECTIONS 12/12/08 GJF/SV GLV C/O (12/08/08) PRUDHOE BAY UNff WELL: Z-01 PERMfT No: 88-0660 API No: 50-029-21830-00 SEC 19, T11 N, R12E, 977' FNL ~ 3456' FEL BP Exploration (Alaska) i L.. o:..~ ~.a s.__... d,.r ~:i w,.~~.. t_~ ~_l a~~t..5 C01~5~R~TIO CO ~ IplS1T Sean McLaughlin CT Drilling Engineer BP Exploration Alaska Inc. PO Box 196612 Anchorage, AK 99519-6612 SARAH PALIN, GOVERNOR 333 W. 7th AVENUE, SUITE 100 ANCHORAGE, ALASKA 99501-3539 PHONE (907) 279-1433 FAX (907) 276-7542 Re: Prudhoe Bay Field, Prudhoe Bay Oil Pool, PBU Z-OlA Sundry Number: 308-222 Dear Mr. McLaughlin: 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. When providing notice for a representative of the Commission to witness any required test, contact the Commission's petroleum field inspector at (907) 659-3607 (pager). As provided in AS 31.05.080, within 20 days after written notice of this decision, or such further time as the Commission grants for good cause shown, a person affected by it may file with the Commission an application for rehearing. A request for rehearing is considered timely if it is received by 4:30 PM on the 23rd day following the date of this letter, or the next working day if the 23rd day falls on a holiday or weekend. A person may not appeal a Commission decision to Superior Court unless rehearing has been requested. Sincerely, Daniel T. Seamount, Jr. Chair DATED this~~day of June, 2008 Encl. ~"~~~~'~ " STATE OF ALASKA a508~ ALA OIL AND GAS CONSERVATION COMMISSION ~~, ~ APPLICATION FOR SUNDRY APPROVAL r~~,.~~JN ~ ~ LQ ~ 20 AAC 25.280 Ala~lca C'tii ~ I`~~J otty. CO~C~ S ®fi 1. Type of Request: ®Abandon ~ ^ Suspend ^ Operation Shutdown ^ Perforate ^ ime Exten~;OR~3~g ~ g-Enter Suspended Well ^ Alter Casing ^ Repair Well ^ Plug Perforations ^ Stimulate ^ Change Approved Program ^ Pull Tubing ^ Perforate New Pool ^ Waiver erg ~~~`~' 2. Operator Name: 4. Current Well Class: 5. Permit To Drill Number BP Exploration (Alaska) Inc. ®Development' ^ Exploratory 206-038 ' 3. Address: P.O. Box 196612, Anchorage, Alaska 99519-6612 ^ Service ^ Stratigraphic 6. API Number: 50-029-21830-01-00 - 7. If perforating, closest approach in pool(s) opened by this operation to nearest 8. Well Name and Number: property line where ownership or landownership changes: PBU Z-01A - Spacing Exception Required? ^ Yes ®No 9. Property Designation: 10. KB Elevation (ft): 11. Field /Pool(s): , ADL 028245 ~ 91.T ' Prudhoe Bay Field / Prudhoe Bay Pool 12. PRESENT WELL CONDITION SUM MARY Total Depth MD (ft): Total Depth TVD (ft): Effective Depth MD (ft): Effective Depth TVD (ft): Plugs (measured): Junk (measured): 11240 - 9013 - 10336- 8767 ' 10336 None Casin Len th Size MD TVD Burst Colla se Structural C nductor 110' 20" 110' 110' Surface 2672' 13-3l8" 2672' 2672' 4930 2270 Intermediate 10192' 9-5/8" 10192' 8655' 6870 4760 Production Liner 944' 7" 9920' - 10348' 8445' - 8776' 7240 5410 Perforation Depth MD (ft): Perforation Depth TVD (ft): Tubing Size: Tubing Grade: Tubing MD (ft): None None 4-1/2", 12.6# 13Cr80 10079' Packers and SSSV Type: 9-5/8" x 4-1/2" Baker'S-3' packer Packers and SSSV MD (ft): 9781' 13. Attachments: 14. Well Class after proposed work: ® Description Summary of Proposal ^ BOP Sketch ^ Detailed Operations Program ^ Exploratory ®Development ^ Service 15. Estimated Date for 16. Well Status after proposed work: Commencin O erations: July 1, 2008 ^ Oil ^ Gas ^ Plugged ®Abandoned 17. Verbal Approval: Date: Commission Representative: ^ WAG ^ GINJ ^ WINJ ^ WDSPL 18. I hereby certify that the foregoing is true and correct to the best of my knowledge. Contact Sean McLaughlin, 564-4387 Printed Nam Sean McLaughlin Title CT Drilling Engineer ~ ~ Prepared ey NamelNumber: Signature ---- ~~~1/~- Phone 564-4387 .Date 6~2`~/~~ Terrie Hubble, 564-4628 Commission Use Onl Sundry Number: _ ~c Conditions of approval: Notify Commission so that a representative may witness ^ Plug Integrity ^ BOP Test ^ Mechanical Integrity Test ^ Location Clearance Other: Subse went Form Re wired: '~,~~ .r,.~ 4 q \ ~ t ~`r t APPROVED BY I / ~ ~ / `~ A roved B COMMISSIONER THE COMMISSION Date Form 10-40 Rev 0 / 06 / Submit In Duplicate f~:~'~> ORIGINAL ~ ~~~ ~~~~~oa~ • - To: Tom Maunder Petroleum Engineer Alaska Oil & Gas Conservation Commission From: Sean McLaughlin CTD Engineer Date: June 19, 2008 Re: Z-01 A Sundry Approval Sundry approval is requested to abandon perforations on well Z-01 A. by History -Nordic 2 CTD RWO 11/06 installed new 13Cr tubing. This was followed immediately by 3 failed CT Sidetrack attempts. After the third failed sidetrack cement was pumped up above the window. No production has occurred since last RWO. Successful IA pressure test was obtained at the time of the RWO indicating good casing integrity. No pressure testing since that time. REASON FOR SUNDRY: There are no offtake options for the current well, Z-01 A. A sidetrack will be drilled to a new bottom hole location. Pre-CT Rig Work: (Scheduled to begin on July 1, 2008) 1. F MIT-IA, OA 2. W AC-PPPOT-T 3. O Bleed gas lift and production flowlines down to zero and blind flange. 4. O Remove wellhouse, level pad. Rig Sidetrack Operations: (Scheduled to begin on October 1, 2008 using Nordic rig 1) ~~ - 1. MIRU Nordic Rig 1 2. NU 7-1/16" CT Drilling BOPE and test. 't 3. Mill 3.80" window at 10,343'. 4. Drill build/turn section with 3.75" x 4.125" bicenter bit, 183', 38 deg/100' DLS. ~V!~v`'y 5. Drill lateral section to 10,863' with bicenter bit,338', 18 deg/100' DLS 6. Run and cement a 3-1/2" x 2-7/8" Chrome liner string. Pump 14 bbl of liner cement. 7. Make a cleanout run with mill and motor to PBTD in combination with a MCNL-GR-CCL tool. 8. Perforate well.. 9. FP well to 2000' with diesel. 10. Set BPV. ND 7-1/16" stack. FP tree and PT tree cap to 3500 psi. 11. RDMO Nordic 1. Post-Rig Work: 1. Re-install wellhouse and FL's. 2. Pull BPV. 3. Run live gas lift design. 4. POP Well Sean McLaughlin CTD Engineer • ~r~ CC: Well File Sondra Stewmanlferrie Hubble TREE= 3-1/8" MCEVOY WELLHEAD= MCEVOY ACTUATOR = _ OTIS KB. ELEV = 91.73' V = BF. ELE 57.28' _ KOP = 3000' Max Angle = 43 ~ 9054' Datum MD = 1049T Datu m TV D = 8800' SS • Z-01 A ENTTg CHROMEERATL~~TTEMPTS, ALL PS:A RWO/CTD Sidetrack DRLG DRAFT ~ ~ ~ 2013' ~'~ 41!2" "X" NIP 13G80 , ID = 3.813" 13-3/8" CSG, 68#, L-80, ~ =12.415" H 26]2' ~ ~4-1 /2" TBG, 12.6#, CR, .0152 bpf, ID = 3.958" ~-~ 10079' CHAS LIFT MANDRELS ST MD TV D DEV TYPE V LV LATCH PORT DATE 8 2496 2496 0 MMG DMY RK 0 10/12!06 7 4288 4170 34 MMG DMY RK 0 10/09/06 6 5073 4778 41 MMG DMY RK 0 10/09/06 5 6108 5568 39 MMG DMY RK 0 10/09/06 4 7314 6479 41 MMG DMY RK 0 10/09/06 3 8226 7187 40 MMG DMY RK 0 10/09/06 2 8967 7730 44 MMG DMY RK 0 10/09/06 1 9669 8250 39 MMG DMY RK 0 10/09/06 9]QO' -' 4-1/2" OTIS X NIP, ID = 3.813" 9761' Symphony Dow Whole PSI Guages (I w ire) 9781' 9-5/8" x 4-1/2" PKR, ID= 4.0" TOP OF 7" LNR 9920' 9805 4-112" OTIS X NIP, ID = 3.813" 9-5/8" CSG, 47#, NT-SOS, ID = 8.681" ~--~ 10191 PERFORATION SUMMARY REF LOG: A NGLE AT TOP PERF: Note: Refer to Production DB for historical perf data SQE SPF INTERVAL OpNSgz DATE ~ PBTD ~-- j 10820' T' LNR, 26#, L-80, .0383 bpf, ~ = 6.276" 10864' 10079' x-141 /2" TBG TA IL 10343' Mechanical Whipstock \ 10400' Top P8A Cement 14517' MARKER JOINT DATE REV BY COMMENTS Du4TE REV BY COMMENTS 07/23/88 ORIGINAL COMPLETION 11/04/06 NORDIC2 RWO 8 CTD (SUSPEND®) 03/11/08 TTR/TLH GLV GO (10/12/06) PRUDHOE BAY UNIT WELL: Z-01A PERMfT No: API No: 50-029-21830-01 SEC 19, T11 N, R12E, 97T FNL 83456' FEL BP Exploration (Alaska) TREE = 3-1/8" MCEVOY WELLHEAD= MCEVOY ACTUATOR ~ OTIS KB. ELEV = 91.73' BF. ELEV = 57.28' KOP = 3000' Max Angle = 43 @ 9054' Datum MD = 1049T Datum TV D = 8800' SS . Z-O ~ B Wg,RT~.CHROME~TL~ TTEMPTS, ALL P&A Proposed CTD Sidetrack O 13-3/8" (SG, 68#, L-80, ID =12.415" ~- j 2672' 4112" TBG, 12.6#, CR, .0152 bpf, ID = 3.958" ~--~ 10079' ITOPOF7"LNR 9-5/8" CSG, 47#, NT-80S, ID = 8.681" H 10191' PERFORATION SUMMARY REF LOG: ANGLE AT TOP PERF: Note: Refer to Production DB for historical pert data SQE SPF INTERVAL Opn/Sgz DATE 10343' I-Mechanical Whipstock 7" LNR, 26#, L-80, .0383 bpf, ~ = 6.276" H 10864' 2013' ~~ 41/2" "X" NIP 13G80 , ~ = 3.813" GAS LIFT MANDRELS ST MD ND DEV TYPE VLV LATCH PORT DATE 8 2496 2496 0 MMG DMY RK 0 10/12/06 7 4288 4170 34 MMG DMY RK 0 10/09/06 6 5073 4778 41 MMG DMY RK 0 10/09/06 5 6108 5568 39 MMG DMY RK 0 10/09/06 4 7314 6479 41 MMG DMY RK 0 10/09/06 3 8226 7187 40 MMG DMY RK 0 10/09/06 2 8967 7730 44 MMG DMY RK 0 10/09/06 1 9669 8250 39 MMG DMY RK 0 10!09/06 9740' 41/2" OTIS X NIP, ID = 3.813" 9761' Symphony Dow Whole PSI Guages (I w ire) 9781' 9805 9-5/8" x 41/2" R<R, ID = 4.0" 4-12" OTIS X N~, ID = 3.813" 9950' -iTOL 3-1/2" & TOC 9960' 3-1/2" X NIPPLE 10079' 41/2" TBG TAIL 10320' ~3-1/2" x 2-7/8" crossover ~'~--/ PBTD ~ 10825' ~ 3-1/2" 13Cr x 2-7/8" 13G Liner, Cemented & Perf'd 10863' 10400' Top PIiA Cement Ou4TE REV BY COMMENTS DATE REV BY COMMENTS 07/23/88 ORIGINALCOMPLETION 11/04/06 NORDIC2 RWO 8: CTD (SUSPENDED) 03/11/08 TTR/TLH GLV GO (10/12/06) 05/15/08 MSE R20POSED CTD ST R2UDFIOE BAY UNIT WELL: Z-01 B PERMfr No: A R No: 50-029-21830-02 SEC 19, T11 N, R12E, 97T FNL &3456' FEL BP Exploration (Alaska) STATE OF ALASKA ~ ~~ ALASKATJIL AND GAS CONSERVATION COM SION ~~~ WELL COMPLETION OR RECOMPLETION REPORT AND LOC#~ [.~ `~ ~ 9 2017 1 a. Well Status: ^ Oil ^ Gas ^ Plugged ^ Abandoned ®Suspended zoAACZa~os zoAACZS.~~o ^ GINJ ^ WINJ ^ WDSPL ^ WAG ^ Other No. of Completions Zero .Welllass: _ , ®De~~to~rti~i4t" ^ Exploratory ^ Service ^ Stratigraphic 2. Operator Name: BP Exploration (Alaska) Inc. 5. Date Comp., Susp., or Aband. 11/04/2006 12. Permit to DriII Number 206-038 , 307-329 3. Address: P.O. Box 196612, Anchorage, Alaska 99519-6612 6. Date Spudded 10/13/2006 13. API Number 50-029-21830-01-00 4a. Location of Well (Governmental Section): Surface: 7. Date T.D. Reached 11/02/2006 14. Well Name and Number: PBU Z-01 A' 977' FNL, 3456' FEL, SEC. 19, T11 N, R12E, UM Top of Productive Horizon: N/A 8. KB (ft above MSL): 91.7' Ground (ft MSL): 54.13' 15. Field /Pool(s): Prudhoe Bay Field / Prudhoe Bay Total Depth: 4920' FNL, 608' FEL, SEC. 24, T11 N, R11 E, UM 9. Plug Back Depth (MD+TVD) 10336 8767 Pool 4b. Location of Well (State Base Plane Coordinates, NAD 27): Surface: x- 599221 y- 5959100 Zone- ASP4 10. Total Depth (MD+TVD) 11240 9013 16. Property Designation: ADL 028245 TPI: x- N/A y- N/A Zone- ASP4 - 5955129 Zone- ASP4 th 597167 T t l D 11. SSSV Depth (MD+ND) None 17. Land Use Permit: : x- y o a ep 18. Directional Survey ®Yes ^ No Submit electronic and rinted information er 20 AAC 25.050 19. Water depth, if offshore N/A ft MSL 20. Thickness of Permafrost (ND): 1900' (Approx.) 21. Logs Obtained (List all logs here and submit electronic and rinted i ormation per 0 AAC 25.071): MWD DIR, GR, RES Lf/NDOs~+~ ~ /O,~f~~i~a ~~TY~ 22. CASING, LINER AND CEMENTING RECORD CASING SETTING DEPTH MD SETTING DEPTH TVD HOLE AMOUNT WT. PER FT. GRADE TOP BOTTOM TOP :BOTTOM SIZE CEMENTING RECORD PULLED 20" Cond ctor Surface 110' Surface 110' 8 cu ds Concrete 13-3/8" 68# L-80 Surface 2672' Surface 2672' 17-1/2" 3581 cu ft Permafrost 9-5/8" 47# L-80 Surface 10192' Surface 8655' 12-1/4" 2169 cu ft Class'G' 7" 26# L-80 9920' 10348' 8445' 8776' 8-1/2" 326 cu ft Cla 'G' 23. Open to production or injec tion? ^Yes ®No 24. TueING RECORD If Yes, list each P MD+ND f T & B tt Interval open tion Size and Number): rf r SIZE DEPTH SET MD PACKER SET MD op o om; e o a ( o 4-1/2", 12.6#, 13Cr80 10079' 9781' MD TVD MD ND 25. ACID, FRACTURE, CEMENT SQUEEZE, ETC. DEPTH INTERVAL MD AMOUNT H~ KIND OF MATERIAL USED 10343' Set Whipstock 10348' Mill Window (TOW at 10348') 10336' P&A w/ 21 Bbls Cement 2500' Freeze Protect w/ Diesel 26. PRODUCTION TEST Date First Production: Not on Production Method of Operation (Flowing, Gas Lift, etc.): N/A Date Of Test: HOUfS Tested: PRODUCTION FOR TEST PERIOD OIL-BBL: GAS-MCF: WATER-BBL: CHOKE SIZE: GAS-OIL RATIO: Flow Tubing PreSS. CaSing PreSS: CALCULATED 24-HOUR RATE OIL-BBL: GAS-MCF: WATER-BBL: OIL GRAVITY-API (CORK): 27. Cone DATA Conventional Core(s) Acquired? ^Yes ®No Sidewal l Cores Ac wired? ^Yes ®No If Yes to either question, list formations and intervals cored (MD+ND of top and bottom of each), and summarize. lithology and presence of oil, gas or water (submit separate sheets with this form, if needed). Submit detailed descriptions, core chips, photographs and laboratory analytical results er 20 AAC 250.071. n None ~ _ ~ ~~~.rt DES ~ ~ 2(1E~~ ~ ~°~ Form 10-407 Revised 02/2007 CONTINUED ON REVERSE SIDE 28. GEOLOGIC MARKERS (LIST ALL FORMATIONS AND ERS ENCOUNTERED): 29. FORMATION TESTS NAME TVD We1lTested. Yes ®No Permafrost Top If yes, list intervals and formations tested, briefly summarizing test results. Attach separate sheets to this form, if needed, and submit Permafrost Base detailed test information per 20 AAC 25.071. Zone 3 11056' 8954' None Formation at Total Depth (Name): Zone 3 11056' 8954' 30. List of Attachments: Summary of Daily Drilling Reports, Well Schematic Diagram, Surveys 31. I hereby certify that the foregoi g is true and correct to the best of my knowledge. I ~ v Signed Terrie Hubble ~ Title Technical Assistant Date PBU Z-01 A 206-038 307-329 Prepared By NameMumber.~ Terrie Hubble, 564-4628 Well Number Permit No. / A royal No. Dulling Engineer: Dan Robertson, 564-5546 INSTRUCTIONS GeNeRA~: This form is designed for submitting a complete and correct well completion report and log on all types of lands and leases in Alaska. Submit a well schematic diagram with each 10-407 well completion report and 10-404 well sundry report when the downhole well design is changed. IreM 1a: Classification of Service Wells: Gas Injection, Water Injection, Water-Alternating-Gas Injection, Salt Water Disposal, Water Supply for Injection, Observation, or Other. Multiple completion is defined as a well producing from more than one pool with production from each pool completely segregated. Each segregated pool is a completion. IreM 4b: TPI (Top of Producing Interval). IreM 8: The Kelly Bushing and Ground Level elevation in feet above mean sea level. Use same as reference for depth measurements given in other spaces on this form and in any attachments. IreM 13: The API number reported to AOGCC must be 14 digits (ex: 50-029-20123-00-00). IreM 20: Report true vertical thickness of permafrost in Box 20. Provide MD and TVD for the top and base of permafrost in Box 28. IreM 22: Attached supplemental records for this well should show the details of any multiple stage cementing and the location of the cementing tool. IreM 23: If this well is completed for separate production from more than one interval (multiple completion), so state in item 1, and in item 23 show the producing intervals for only the interval reported in item 26. (Submit a separate form for each additional interval to be separately produced, showing the data pertinent to such interval). IreM 26: Method of Operation: Flowing, Gas Lift, Rod Pump, Hydraulic Pump, Submersible, Water Injection, Gas Injection, Shut-In, or Other (explain). IreM 27: Provide a listing of intervals cored and the corresponding formations, and a brief description in this box. Submit detailed description and analytical laboratory information required by 20 AAC 25.071. IreM 29: Provide a listing of intervals tested and the corresponding formation, and a brief summary in this box: Submit detailed test and analytical laboratory information required by 20 AAC 25.071. Form 10-407 Revised 02/2007 Submit Original Only BP EXPLORATION Page 1 of 30 ..Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Spud Date: 6/28/1988 Event Name: REENTER+COMPLETE Start: 9/24/2006 End: Contractor Name: Rig Release: Rig Name: Rig Number: Date From - To Hours Task Code NPT Phase Description of Operations 9/23/2006 21:00 - 00:00 3.00 MOB P PRE Move rig over well. Rig up flow back tank. Rig up cellar berm. Accept rig at 2100 hrs on 9/23/06. 9/24/2006 00:00 - 07:00 7.00 P PRE Continue to rig up. Make up and test kill and choke lines in cellar. Load pits with KCL water, and 250 bbls Safe-Surf. 07:00 - 08:00 1.00 P DECOMP Pump down IA to displace FP from tbg. 08:00 - 10:45 2.75 KILL P DECOMP Displace tbg with KCL w/ safe-surf-o. Take returns up IA. Pump pressure at 1530 psi at 5.8 bbl/min. 685 bbls pumped. 10:45 - 12:30 1.75 KILL P DECOMP Monitor and verify well is dead. Wait on Cameron wellhead hand, who is stuck in construction at KRU bridge. 12:30 - 13:15 0.75 BOPSU P DECOMP Blow down control lines. Set TWC plug in tubing hanger. 13:15 - 13:45 0.50 BOPSU P DECOMP PT TWC to 500 psi. Blow down control lines. 13:45 - 16:00 2.25 BOPSU P DECOMP Prep to ND tree. 16:00 - 18:00 2.00 BOPSU P DECOMP ND tubing head adapter and tree. Check threads on top of tbg hanger. MU 10 rds with 3-1/2" 8rd EUE. Prep to lift 13-5/8" stack. 18:00 - 18:20 0.33 BOPSU P DECOMP PJSM with new crews discuss procedure and hazards for NU 13-5/8" BOP stack. 18:20 - 00:00 5.67 BOPSU P DECOMP NU BOP stack. 9/25/2006 00:00 - 04:30 4.50 BOPSU DECOMP NU 13-5/8" BOPS. MU kill and choke lines to mud cross. 04:30 - 13:00 8.50 BOPSU DECOMP Test BOP to low of 250 psi, high of 3500 psi, 5 min each. Alert AOGCC rep John Crisp for witnessing BOP test. Hold SIMOPS meeting with AIC supervisor in TL Camp. Review job scopes for rig and gravel crew. Discuss communications and contact info. Discuss hazards, in particular spotting of equipment and traffic patterns. 13:00 - 14:45 1.75 BOPSU DECOMP RU DSM Lubricator and remove TWC. 14:45 - 15:45 1.00 WHSUR DECOMP MU landing joint and torque to 3500 ft-Ibs. Back off LDS on tubing head. 15:45 - 16:00 0.25 PULL DECOMP PJSM. Lifting tubing hanger. 16:00 - 18:00 2.00 PULL DECOMP POH with hanger 54k up wt. MU control lines to HES spooler. LD hanger. LD landing jt. 18:00 - 18:15 0.25 PULL DECOMP Crew change. PJSM for LD 3.5" tbg with control line. 18:15 - 00:00 5.75 PULL DECOMP Pull and LD 3.5" tbg. Midnight: 100 jts, SSSV and 1 GLM have been laid down. 9/26/2006 00:00 - 10:30 10.50 PULL P DECOMP Continue to pull and LD 3.5" tbg. Recovered 302 jts, joint #303 was cut 13.38' down from the top. Also recovered 5 GLS, 1 sliding sleeve, 1 SSSV, 4 stainless bands, and 30 SSSV Lasalle clamps. 10:30 - 13:00 2.50 PULL P DECOMP Rig down and clean up floor after pulling tbg. Prepare to change out packoff on tubing head. Bled down OA to 0 psi, shut in. Pressure built to 30 psi. Bled back down to 0 psi. Monitored and verified no pressure build. 13:00 - 13:45 0.75 WHSUR P DECOMP RU and pull 9-5/8" mandrel style packoff. Junk ring and seal element parted from packoff assembly. 13:45 - 16:30 2.75 WHSUR P DECOMP Call for 9-5/8" storm packer. MU kelly assembly and set in rat hole. 16:30 - 18:00 1.50 WHSUR P DECOMP Load 12 4-3/4" drill collars and 5 joints of drill pipe into pipe shed. Clean and strap same 18:00 -18:20 0.33 WHSUR P DECOMP PJSM: review pinch points and other hazards for PU DC's. Review on the rig floor those pinch points with all hands. One new Nordic hand given special attention and coaching. 18:20 - 21:00 2.67 WHSUR N SFAL DECOMP PU 12 collars and 4jts drillpipe. PU Howco SSSV/RTTS and set just below wellhead. rnncea: i u roi~wi w:ca:o~ r+m BP EXPLORATION Legal Well Name: Common Well Name: Event Name: Contractor Name: Rig Name: Date 4 From - To Operations Summary Report Z-01 Z-01 REENTER+COMPLETE Start: 9/24/2006 Rig Release: Rig Number: Hours `Task I Code I NPT I Phase Page 2 of 30 Spud Date: 6/28/1988 End: Description of Operations 9/26/2006 21:00 - 21:10 0.17 WHSUR N SFAL DECOMP PJSM review ND procedures and hazards. 21:00 - 00:00 3.00 WHSUR N SFAL DECOMP Make break on BOP stack below tbg head. Remove riser and choke line. Install lifting cap on annular. PU and move aside. 9/27/2006 00:00 - 00:30 0.50 WHSUR N SFAL DECOMP Pull remaining pieces of mandrel packer from wellhead. 00:30 - 02:15 1.75 WHSUR N DECOMP Install new pack-off. Unable to seat last 1/2" (due to either hydraulic effector lower junk ring compressing lower seal) in order to RILDS. Tryed stacking blocks but just not enough weight. Discuss problem with Cameron & crews. Only alternative is to use the BOP stack weight. RU 3x12 across pack-off. Unable to ', lift stack high enough to clear top of pack-off because of bridge crane's spool has a small cat's xxx. 02:15 - 02:30 0.25 WHSUR N DECOMP Held PJSM to discuss steps forward and get everyone on the same page. 02:30 - 04:45 2.25 WHSUR N DECOMP Pulled out new mandrel pack-off. Removed kill line from stack. Re-set stack and tbg head on wellhead MU 4 bolts to hold in place. Run out enough bridge crane cable to clear backlash then re-spool. Pick stack and tbg head back up. Install the Cameron mandrel pack-off. Set 3x12 on top then gently set stack on it to fully seat pack-off. RILDS. 04:45 - 11:00 6.25 WHSUR N DECOMP Nipple up BOP stack and choke/kill lines. Begin loading pipeshed w/ 3-1/2 DP PT packoff at 3800 psi 11:00 - 14:00 3.00 WHSUR N DECOMP NU riser 14:00 - 15:30 1.50 WHSUR N DECOMP Install test plug. Body test BOPE equipment flange breaks to 3500 psi against blind rams. Remove test plug 15:30 - 16:45 1.25 WHSUR N DECOMP Release RTTS w/ 24k, chk for flow 15 min, none. POOH LD RTTS. Install TIW valve in top jt of DP 16:45 - 18:00 1.25 WHSUR P DECOMP PU kelly and prep for service Fin loading pipeshed w/ 305 jts 3-1/2 DP 18:00 - 22:00 4.00 WHSUR P DECOMP Continue working with kelly. MU kelly hose and spinner hoses. PT kelly hose connection and upper kelly valve to 250psi low 3500 psi high 5 min each. 22:00 - 22:10 0.17 WHSUR P DECOMP PJSM review pipe handling procedures. 22:10 - 00:00 1.83 WHSUR P DECOMP Stand back DC's and 2 stds DP 9/28/2006 00:00 - 00:45 0.75 WHSUR P DECOMP Set wear bushing. 00:45 - 03:00 2.25 FISH P DECOMP PU fishing tools. 03:00 - 04:30 1.50 FISH P DECOMP RIH with drill collars and 2 stands of DP form derrick. 04:30 - 06:00 1.50 FISH P DECOMP Drift and PU drillpipe. (will need 297 jts total) 06:00 - 20:00 14.00 FISH P DECOMP Continue to drift and PU drillpipe. 20:00 - 21:35 1.58 FISH P DECOMP PU kelly on jt #297'. establish circulation 50spm / 500psi, wt check rotating 113k up 105k down non-rotation 120k up 105k down. RIH tag top of cut-off jt at 9810' with 23.5' kelly in. Mill over 4.15" OD jet-cut flare for 2". RIH 3' and setdown with 20k. Maximum pump pressure was 585psi. PU with overpull to 130k. Tried several time to repeat this overpull but did not. Overshot Seal Assy must have been hydrauliclly shear when packer was set back in 1988'. This was mentioned on the 88 report but not clearly stated without doubt. 21:35 - 00:00 2.42 FISH P DECOMP Setback kelly. TOH 9/29/2006 00:00 - 06:00 6.00 FISH P DECOMP TOH to DC's 06:00 - 06:15 0.25 FISH P DECOMP Crew change/safety mtg rnntea: iuiai~uui iu:~a:ouHnn BP EXPLORATION Operations Summary Report Page 3 of 30 Legal Well Name: Z-01 Common Well Name: Z-01 Spud Date: 6/28/1988 Event Name: REENTER+COMPLETE Start: 9/24/2006 End: Contractor Name: Rig Release: Rig Name: Rig Number: Date From - To Hours Task Cade NPT .Phase Description of Operations 9/29/2006 06:15 - 06:45 0.50 FISH N SFAL DECOMP Add backup Totco weight indicator since the recently repaired one still doesn't work? 06:45 - 08:15 1.50 FISH P DECOMP Standback DC's LD fishing assy w/ no recovery. Found grapple on spear had been fully inserted, but had probably been in the release position during insertion. The grapple probably released just after dressing the top of the stub while RIH. Discuss 08:15 - 08:40 0.42 FISH N DFAL DECOMP MU same BHA assy after replace shear pin to keep grapple in the latch position 08:40 - 10:00 1.33 FISH N RREP DECOMP Replace hyd cylinder that adjusts height of pipe spinner 10:00 - 11:15 1.25 FISH N DFAL DECOMP MU DC's Adjust hydraulics to pipe spinner (1/4) 11:15 - 17:40 6.42 FISH N DFAL DECOMP TIH w/ DP 17:40 - 18:40 1.00 FISH N RREP DECOMP Noise coming from within drawworks front guards. Remove guards from off drillers side. Drum rubbbing on guard. Shim with washers and replace guards. 18:40 - 19:00 0.33 FISH N DECOMP Continue RIH with final 3 stds. PU 2 singles #297 and #298 with TIW. 19:00 - 20:00 1.00 FISH N DECOMP Check wts non-rotation 177k up 143k down. RIH setdown 25k with 23' in on jt#298. PU spear did not engage. Repeat same results. LD jt#298 and PU kelly wts 182k up 162k down. RIH 21' slight bump on top of tbg stub, and make 3 turns right regain wt RIH 1/2' see another bump in wt make 3 more RH turns regained wt. RIH 3' and engage top of tbg stub with spear. PU to 220k slack-off back to 140k 3 times to insure good bite on stub. PU to 262k (80k over) allow jars to go off. Repeat 6 times. Take to 90k over jar 1 time and appears Overshot Seal Assy released from Slickstick. PU slight drag for 14' -good sign. 20:00 - 00:00 4.00 FISH N DECOMP Setback kelly and blowdown. TOH 9/30/2006 00:00 - 04:00 4.00 FISH N DECOMP TOH to collars. 04:00 - 05:30 1.50 FISH N DECOMP LD accelerators. Stand back collars. Fish is on. Break washpipe extension. LD fish. Recovered more fish than planned ...the TIW OS had not been previously sheared so recovered the seal assy too plus -2' of 5-3/8" OD tubing extension below the seal assy which had pulled out of a collar. This leaves about 1' of latch assy which needs to be rotated to be released and recovered before milling the packer slips 05:30 - 06:15 0.75 FISH P DECOMP Discuss. Elect to mill the packer slips now. Then, will recover the packer and tailpipe w/ spear 06:15 - 07:15 1.00 FISH P DECOMP WO additional BOT milling tools to arrive while bring boot baskets and other tools to floor and send fish and tools outside 07:15 - 08:45 1.50 FISH P DECOMP MU BHA 08:45 - 10:15 1.50 FISH P DECOMP MU DC's, accelerators and one stand DP 10:15 - 12:30 2.25 FISH P DECOMP CDL 50' 12:30 - 15:45 3.25 FISH P DECOMP TIH w/ 100 stds DP 15:45 - 17:00 1.25 FISH P DECOMP Use 45T crane to remove the used CL spools and lift the HES symphony line spooler to the floor 17:00.- 19:45 2.75 FISH P DECOMP Continue TIH 131 stds. Crew change. Brief PJSM continue TIH PU 2 singles #297 & 298. Kelly up. Printed: 12/19/2007 10:29:50 AM BP EXPLORATION Legal Well Name: Common Well Name: Event Name: Contractor Name: Rig Name: Date f From - To 9/30/2006 119:45 - 00:00 10/1/2006 100:00 - 06:00 06:00 - 10:20 Operations Summary Report Z-01 Z-01 REENTER+COMPLETE Start: 9/24/2006 Rig Release: Rig Number: Hours ! Task I Code I NPT I Phase 4.25 FISH P 6.00 FISH P 4.33 FISH P 10:20 - 16:30 I 6.171 FISH ~ P 16:30 - 22:00 I 5.501 FISH I P 22:00 - 23:45 1.75 FISH I P 23:45 - 00:00 0.25 FISH P 10/2/2006 (07:45 - 09:00 I 6.25 FISH P 09:00 - 16:00 I 7.001 BOPSURP 16:00 - 18:00 2.00 FISH P 18:00 - 00:00 6.00 FISH P 10/3/2006 00:00 - 01:30 1.50 BOPSU P 01:30 - 02:40 1.17 FISH P 02:40 - 09:00 6.33 FISH I P 09:00 - 10:45 1.75 FISH P Page 4 of 30 Spud Date: 6/28/1988 End: Description of Operations DECOMP Establish parameters: 3.Obpm 420psi, 90rpm upwt 185k dwn wt 160k rot wt 175k 200amps. Tagged top of packer @ 9849' wtih 28' in on kelly. Mill packer 5-10k 220-260 amps. Pump 10 bbl 2# bio sweep every 1'. Midnight depth 9850.5'. DECOMP Continue milling packer f/ 9850'5'. 3 bpm 410psi 90 rpm's 5-12k wob 220-270 amps. Have tryed several times milling wo pumps. Also coming off packer and hitting hard. Slow going. DECOMP Mill w/o pump 1.5 hr, still no progress. Resume pumping 2.9/440 w/ 10-15k wob 210-280 amps. Spud occasionally and get some more torque. Pump a 35 bbl biozan super sweep DECOMP Lost 4k wob while gain 0.5' of hole. Torque increased too. Encouraging. Pump another sweep. Continue to mill w/ and w/o pump, spud occasionally 60-120 rpm 210-280 amps DECOMP Torqued up when dry drilling. PUH and temporarily immobile. Resume milling w/ pump. Pump 27 bbl biozan sweep. Appears we have cut the top slips and are spinning on the 'cone'. Back to dry drilling. Making some slow progress. Seeing enough torque at times to know somethings happening. Mill to 9852'. Torqued up. PU RBIH packer had fallen. Flow check. Make 2 connections with jts #299 & 300, tagged top of packer at.9908' with 20' in on kelly. DECOMP CBU 6 bpm 1400psi. No gas to surface. Shutdown and flow check. Dead DECOMP PJSM review tripping procedures and hazards. First night back for this crew. DECOMP TOH DECOMP Standback DC's DECOMP LD milling assy. Packer mill and pilot mill had fair wear, but could have milled another packer. All three boot baskets full of metal shavings-recovered 5-7 gallons. Clear floor of tools DECOMP Pull wear ring, set test plug. Weekly BOPE test was witnessed by AOGCC. Test VBR's w/ 4-1/2" test joint. No failures or retests. Pull test plug, set wear ring DECOMP Bring fishing tools to floor MU BHA DECOMP TIH w/ packer spear assy. DECOMP PU kelly. PT upper/lower kelly valves, standpipe and hose to 250 psi low/3500 psi high 5 min each. DECOMP MU kelly break circulation 3bpm 500psi. Non-rotating up wt 212k dwn wt 165k. RIH tag top of packer assy at 9908' w/ 33.5' in on kelly. Work fish several times up wt 214-218k. Put in 3rd lefthand torque. Setdown again with 50k. PU wt 214-218k looks like fish is dragging. Setback and blowdown kelly. DECOMP TOH first several stands pulling 195-200k showing some drag. DECOMP Standback DC's Standback fishing assy w/ no recovery. Appears junk is blocking full entry of grapple into 4" ID sub. There is one deep gouge on the bottom and two smaller ones on the side of the -1' guide below the grapple on the spear. The grapple had no marks rnn[ea: ~uiarzuui iv:~a:ovr+m BP EXPLORATION ...Legal Well Name: 'Common Well Name: Event Name: Contractor Name: Rig Name: Date From - To Operations Summary Report Z-01 Z-01 REENTER+COMPLETE Start: 9/24/2006 Rig Release: Rig Number: Hours ~ Task I Code I NPT I Phase 10/3/2006 10:45 - 11:30 11:30 - 14:00 14:00 - 21:30 21:30 - 22:10 22:10 - 23:30 0.75 FISH P 2.50 FISH P 7.50 FISH P 0.67 FISH P 1.331 FISH I P 23:30 - 00:00 I 0.501 FISH I P 10/4/2006 00:00 - 00:45 0.75 FISH P 00:45 - 01:00 0.25 FISH P 01:00 - 06:00 5.00 FISH P 06:00 - 08:30 2.50 FISH P 08:30 - 10:00 1.50 FISH P 10:00 - 10:30 10:30 - 17:00 17:00 - 20:00 110/5/2006 20:00 - 00:00 00:00 - 01:30 01:30 - 03:30 0.501 FISH P 6.50 FISH P 3.00 FISH P 4.00 FISH P 1.50 FISH P 2.00 FISH P DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP Page 5 of 30 Spud Date: 6/28/1988 End: Description of Operations Discuss. LD fishing assy and pick up new milling assy while wo mill. Will mill out the debris w/ a longer extension than was run on the packer milling tool. A 3-3/4" mill will be run on the bottom of a PRT tool PU boot baskets and bumper sub. Wait briefly for other Baker tools. MU remaining BHA extension length = 4.45 ft RIH with collars and DP. At crew change, installed new Nordic rented weight indicator. With 150 stds in and BHA at 423ft PU is 138k/108k. PU kelly and broke circuilateion at 5 bpm String wts at 142k/114k. Confirmed calculations. RIH and tagged top of fish at 9912 ft MD. PU and rotated down and tagged the top of the fish with 21 ft kelly in. Milling through top offish at 9,912 ft. Op = 4.9 bpm at Pp = 1384 psi .230 to 260 amps (7000 ft-Ib Torque) After going into to the top of the fish 0.5 ft at 9912 ft, was unable to rotate through with torque limiter set at 360 amps. it would stall. Was able to RIH past the top of the fish Oft to where the 8.2" mill tags the top of the fish. RIH 4 times and tagged up on the 8-1/2" mill every time, but was still unable to rotate through the top of the fish PU above top of fish and circulated out 30 bbl biozan sweep out of hole. 20,000 strokes Finish circulating BU at 6 bpm and recovered biozan sweep Set kelly back and blow down. Make ready to POOH POOH on a stand. Note: Block moving around in derrick due to ,high winds causing trip OOH to be slow. Crew change. Pull remaining 5 stds and BHA LD mill and junk baskets. A few lateral marks on mill, no damage or deep scaring. JB 1/4 full with small pieces from packer and scale. PU spear assy. TIH Check wts 132k up 108k down. PU kelly 142k up 114k dwn. RIH tag top of fish with 35' kelly. Setdown 15k to engage spear. PU no indication wee have it. Put in 2 rds LH torque setdown 20k. Still no indication. PU wts are 142k. Setdown with 30k with same results pu and put in 2 rds LH torque try again. PU bring on pump to 3bpm and try again Same results. Circ and go through crew change RIH and tagged the top of the fish at 99912 ft. Worked torque down Spear is in the fish, (Pp increased 250 psi) but unable to latch. Could be trying to latch in the MOE below the packer (ID could be 5" ID) Tried several things and unable to get latched. POOH POOH with Spear BHA LD accelerator jars, stand 12 DC's back in derrick. Left 4" Itco Spear in the hole. OD = 4" grapple and 3-1/4" body OD. Length = 2.60 ft. The 2-3/8" reg thread was damaged alone with the no go plate. The plate had rotating and compression damage caused by the top of the fish. The spear is either set in the top of the fish or it has fallen down below the MOE to the 3-1/2" cross-over sub. Called for another BOT spear. rnntea: iu ro~cvui iv.[y:ov r+m BP EXPLORATION Operations Summary Report Legal Well Name: Z-01 Page 6 of 30 Common Well Name: Z-01 Spud Date: 6/28/1988 Event Name: REENTER+COMPLETE Start: 9/24/2006 End: Contractor Name: Rig Release: Rig Name: Rig Number: Date ~ From - To I Hotars I Task I Code I NPT I .Phase I Description of Operations 110/5/2006 103:30 - 06:30 I 3.001 FISH I P 06:30 - 07:45 I 1.251 FISH I P 104:10 - 15:00 I 0.831 FISH P 15:00 - 21:30 I 6.501 FISH I P 21:30 - 00:00 I 2.501 FISH I P 10/6/2006 00:00 - 01:00 1.00 CLEAN P 01:00 - 02:30 1.50 CLEAN P 02:30 - 03:00 0.50 CLEAN P 03:00 - 03:45 0.75 CLEAN P 03:45 - 04:45 1.00 CLEAN P 04:45 - 13:00 I 8.251 CLEAN I P 13:00 - 16:00 3.00 CLEAN P 16:00 - 18:00 2.00 CLEAN P 18:00 - 18:30 0.50 CLEAN P 18:30 - 00:00 5.50 CLEAN P 10/7/2006 00:00 - 04:30 4.50 CLEAN I P 04:30 - 06:00 1.50 CLEAN P 06:00 - 06:25 0.42 CLEAN P 06:25 - 10:15 3.83 CLEAN P 10:15 - 11:30 1.25 CLEAN P 11:30 - 15:05 3.58 CLEAN P 15:05 - 15:20 0.25 WHIP P 15:20 - 16:00 0.671 WHIP I P 16:00 - 17:30 1.50 WHIP P 17:30 - 18:30 1.00 WHIP P 18:30 - 19:30 I 1.001 WHIP I P 19:30-22:001 2.501 WHIP 1P 22:00 - 00:00 I 2.001 WHIP I P DECOMP Wait on tools. De-icing derrick, crown maintenance (lights) and cleaning rig floor. DECOMP MU new Itco spear assy w/ 4.010" catch with solid 5-3/4" OD stop sub DECOMP T1H with collars and DP DECOMP Check wt wo kelly 132k up 108 down. PU kelly break circulation 5bpm 1225psi. Check wts 142k up 114k down. RIH 33' kelly in chk wts -same RIH 34' and tag, continue stack wt and close bumper jars. RIH 36' pp increased to 1600psi pick-up to 152k then quickly dropped back to 142k. Worked several times setting down 35k max. Pressure would increase to 2200psi. So thinking is spear is inside packer down to the stop. Setting down completely is forcing lower swedge connection on to 7" liner. PU and see 4k overpull with 15' kelly in. This we have never seen. We think fish is on. DECOMP TOH with first stand small amount of drag, not a smooth pick-up weight as seen prior to picking up kelly. Continue TOH. SD for 1 hrs at 18:00 for crew change. DECOMP LD accelerators, and stood back 6 stds 4-3/4" DC. Pulled spear to surface and recovered fish. LD and recovered all of the fish DECOMP PJSM and clean rig floor DECOMP CDL at 500 ton miles DECOMP Held PJSM on PU BHA with dual casing scrapers DECOMP Loaded tools into pipe shed. Clean up same. DECOMP PU dual casing scraper BHA RIH with 8 stands 3-1/2" DP. PU 9-5/8" casing scraper and junk baskets DECOMP RIH with 3-1/2" DP from derrick. PU 15 singles. PU kelly. RIH tag bottom at 10392'. DECOMP Circulate 40bbls hi-vis pill to surface @ 5bpm 1260psi DECOMP Slowdown kelly. Start POOH LDDP DECOMP Crew change with PJSM DECOMP POOH laying down dril pipe. 180 jts 3-1/2" dp layed down at midnight DECOMP Laying down 3-1/2" DP DECOMP PU kelly and service the connection for RD. Stand kelly back and LD DC's DECOMP Service rig and PJSM review LD procedures. DECOMP Continue LD drill collars, lower BHA and DP DECOMP Load out Baker fishing cleanup floor. DECOMP Break down kelly remove from rig. RD tongs and set out. WEXIT PJSM w/ SLB and Nordic crews. Review plan forward and RU procedures. WEXIT RU SLB WEXIT RIH with 5.95" gauge ring to 10,380 ft ELMD. WEXIT RU to run WS. Crew change and PJSM on hazards of PU and running WS. WEXIT Install 3 pip tags in whipstock. RU firing head and SLB running I tools. WEXIT RIH with whipstock Tied in and set TOWS at 10,342 ft 3 deg RHS. WEXIT POOH with whipstock eline setting tools. RD SLB and moved Printed: 12/19/2007 10:29:50 AM i ~ BP EXPLORATION Page 7 of 30 Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Event Name: REENTER+COMPLETE Start: Contractor Name: Rig Release: Rig Name: Rig Number: Date From - To Hours .Task Code NPT Phase 9/24/2006 Spud Date: 6/28/1988 End: Description of Operations 10/7/2006 22:00 - 00:00 2.00 WHIP P WEXIT off IocationLoading pipe shed with 4-1/2" tubing, cable clamps 10/8/2006 100:00 - 07:30 I 7.501 CASE I P 07:30 - 09:00 1.50 CASE I P 09:00 - 09:20 0.33 CASE P 09:20 - 12:30 I 3.171 CASE I P 12:30 - 12:45 I 0.251 CASE I P 12:45 - 18:00 I 5.251 CASE I P 18:00 - 00:00 I 6.00 I CASE I P 10/9/2006 00:00 - 06:00 6.00 CASE P 06:00 - 06:20 0.33 CASE P 06:20 - 13:30 I 7.171 CASE I P 13:30 - 16:00 I 2.501 CASE I P 16:00 - 19:30 I 3.501 CASE I P 19:30 - 21:20 I 1.831 CASE I P 21:20 - 21:40 0.331 CASE P 21:40 - 00:00 2.33 CASE P 10/10/2006 00:00 - 00:45 I 0.751 CASE ( P 00:45 - 01:30 0.75 CASE P and jewelry. RUNPRD Load and prep 4-1/2" tubing 245 jts of 4-1/2" 12.6#/ft 13Cr80 Vam Top load and prep in the pipe shed with jewelry RUNPRD RU Doyon csg equip andHES equip. RUNPRD PJSM with all crew members. Assign job tasks, go over hazards, pinch points. Review procedures for MU of VamTop Cr tbg and installation of HES Symphony gauge wire & clamps. RUNPRD Run 4-1/2" 12.6# 13Cr 80 Vam Top completion. Installing 1 Symphony gauge per joint around collar. Above/below each GLM. RUNPRD Crew changeout. PJSM. Review running procedures and hazards. RUNPRD Continue running 4-1/2" completion string. Torque Turn Vam Top connections with 4440 ft-Ibs Wxtremety high winds coming from east at 60 to 70 knots. Having trouble keeping blocks from swing due to high winds. Run approximately 12 jts per hr due to high winds At 18:00 hrs ran a total of 56 jts 4-1/2" RUNPRD Running 4-1/2" compeltion in high winds Tried several things to speed up the process. Tried putting hand in derrick and the pure velocity of wind to geat to position block vertically above rotary table. Tried 180" bail and changed Doyon torque turn. After changing the Doyon equipment and installed the longer bails, the running speed inc to 15 jts /hrs even with the 60-70 mph wind gust. 113 jts run at midnight. RUNPRD Running 4-1/2" completion RUNPRD Crew changeout. PJSM review running procedures and hazards. Perofrm morning rig maintenance. RUNPRD Continue running 4-1/2" 12.6# Cr 80 Vam Top completiion MU torque 4440 ft/Ibs. Installing 1 clamp around each collar f/ Symphony gauge wire. Checking integrity every 5 jts. Clamps in hole: 2232-OTC- over the collar clamps 18-MJ-mid joint half clamps. (16 above/below GLM's , 1 at gauge mandrel, 1 at tbg hanger. RUNPRD MU CIW tbg hanger. MU lower HES Symphony gauge wire pack-off and test to 5000psi / 10 min. Drain BOP stack. Land hanger 25'-6" in. Visually check -OK. MU TIW valve and circulation hose. Unland tbg hanger and close annular. RUNPRD Circulate 580 bbls 140deg seawater treated with corrosion inhibitor at 3 bpm. RUNPRD Landed tubing in well head, RILDS (OK) Dropped Rod/Ball RU to PT tubing and set packer RUNPRD Held PJSM on setting and PT tubing and IA RUNPRD RU kill line to PT and set packer at 9,780 ft PT tubing to 3800 psi for 30 min Final = 3750 psi charted. Bleed down tubing to 1600 psi. PT IA to 3600 psi for 30 minand charted. final pressure 3700 psi. Released tubing pressure and sheared DCR valve at 2500 ft. Circulated 10 bbl OIK RUNPRD RU to freeze protect the wellbore RUNPRD LRS pumped 175 bbl diesel down IA and FP the wellbore from Printed: 12/19/2007 10:29:50 AM • BP EXPLORATION Operations Summary Report Page 8 of 30 Legal Well Name: Z-01 Common Well Name: Z-01 Spud Date: 6/28/1988 Event Name: REENTER+COMPLETE Start: 9/24/2006 End: Contractor Name: Rig Release: Rig Name: Rig Number: Date ~ From - To Hours I Task I Code I NPT I Phase I Description of Operations 10/10/2006 00:45 - 01:30 0.75 CASE P RUNPRD 2,500 ft (DCR vaave). Cir 10 bbl to confirm shear (ok) 01:30 - 03:00 1.50 CASE P RUNPRD RD LRS. Installed BPV and PT below to 500 psi, (OK) 03:00 - 06:00 3.00 WHSUR P RUNPRD ND Riser and hang in the cellar. Installed lift plate on 13-5/8" annular 06:00 - 06:15 0.25 WHSUR P RUNPRD PJSM flowing crew change and after rig maintenance. 06:15 - 08:00 1.75 WHSUR P RUNPRD Finished ND BOP stack 08:00 - 08:15 0.25 WHSUR P RUNPRD PJSM on plan forward for moving the BOP stack using the 980 load and Nordic loader 08:15 - 10:15 2.00 WHSUR P RUNPRD Trolly back BOP skid using Veco's and Nordic fork lift 10:15 - 16:00 5.75 WHSUR P RUNPRD Clean cellar and with CIW and HES installed 13-5/8" X 4-1/16" adaptor flange with HES symphony external pigtail . PT seal to 5,000 psi 30 min (ok) Retested pig tail and showed 3430 psi BHP. May have remove symphony pig tail to NU 16:00 - 16:45 0.75 WHSUR P RUNPRD Lower riser to ground, MU 7-1/16" BOP stand 16:45 - 18:00 1.25 WHSUR P RUNPRD Installing new pit liner 18:00 - 00:00 6.00 WHSUR P RUNPRD Spot 7-1/16" BOPS outside cellar. Hold PJSM. Rig up slings and snubbing lines. NU BOPs kill & choke lines, riser and related equipment. Take on 500 bbls 2 ppb biozan fluid in pits. RU BOP 10/11/2006 00:00 - 10:00 10.00 BOPSU P WEXIT NU BOPs 10:00 - 17:30 7.50 BOPSU P WEXIT RU DSM lubricator and pulled BPV and installed TWC for PT BOP's Well on vacume on tubing and IA. The P&A might have broken down for what ever reason. PT BOP as per PTD 3,500/250 psi. AOGCC John Spaulding wavered witnessing BOP test. Installed 3-1/2" test joint in variables and was unable to PT. PUH and found the test joint crimped. Installed companion flange on tree wing valve. Drained BOP stack to inspect variables ram and body. 17:30 - 20:00 2.50 BOPSU N RREP WEXIT Remove and inspect variable ram bodies. Found they may not be 3-1/2". Call SLB for a replacement as Nordic spares are too difficult to access from Deadhorse. 20:00 - 21:30 1.50 BOPSU N RREP WEXIT Replacement vbrs look identical to problem set. Not sure what problem is. Proper 3-1/2" x 2-3/8" test joint not available. Call AOGCC, J Spaulding, for permission to perform vbr test once a proper test joint is made, sometime tomorrow. Install VBRs and test door seals to 3500 psi. 21:30 - 23:00 1.50 BOPSU P WEXIT RU DSM lubricator. Pull two way check valve. Lay down lubricator. 23:00 - 00:00 1.00 STWHIP P WEXIT Wait on slickline unit. 10/12/2006 00:00 - 00:15 0.25 FISH P RUNPRD Wait on slickline unit to finish on Z-19. 00:15 - 01:30 1.25 FISH P RUNPRD Spot SLB slickline unit. Hold PJSM with Nordic &SLB. Discuss job details. 01:30 - 10:30 9.00 FISH P RUNPRD Revcovered ball and rod. Pull DCR from GLM #1. Set dummy in GLM #1. Pull RHC plug from tbg tail. Failed to rrecover RHC, redress tool. RIH to retrieve RHC plug Latched and jar on RHC to retrieve same. Pulled tight coming out of hole. Retrieved RHC and RIH with 3.8" GR/JB 10:30 - 11:30 1.00 STWHIP P WEXIT PJSM on RD Wireline. RD same 11:30 - 12:30 1.00 STWHIP P WEXIT PU injector and stab on stuffing box and secure. Install hydraulic lines. 12:30 - 12:50 0.33 STWHIP P WEXIT PJSM on stabbing CT and pulling across pipe shed. Review SOP's on stabbing procedures. Review hazards and mitigated PflOteq: 1L1yl"LUU/ lU:Z8:5U AM ~~ C BP EXPLORATION Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Event Name: REENTER+COMPLETE Start: Contractor Name: Rig Release: Rig Name: Rig Number: Date From - To Hours Task Code NPT Phase- 9/24/2006 Page 9 of 30 Spud Date: 6/28/1988 End: Description of Operations 10/12/2006 12:30 - 12:50 0.33 STWHIP P WEXIT hazards. 12:50 - 13:45 0.92 STWHIP P WEXIT Pull CT across pipe shed and stab CT 13:45 - 16:15 2.50 STWHIP P WEXIT Dress CT and wire. RU to load CT, set counter and lined out 16:15 - 17:15 I 1.001 STWHIPI P I I WEXIT 20:15 - 210:00 0.075 STWHIP P I RREP WEXIT WEXIT 21:00 - 21:30 0.50 STWHIP P WEXIT 21:30 - 00:00 2.50 STWHIP P WEXIT 110/13/2006 100:30 - 00:30 0.00 BOPSUF{P PROD1 01:30 - 02:30 I 1.001 STWHIPI P I I WEXIT 02:30 - 04:30 I 2.001 STWHIPI P I I WEXIT 04:30 - 05:15 0.75 STWHIPI P WEXIT 05:15 - 05:50 0.58 STWHIP P WEXIT 05:50 - 12:15 I 6.421 STWHIPI P I I WEXIT 12:15 - 13:45 I 1.50) STWHIPI P I I WEXIT 13:45 - 14:50 I 1.081 STWHIPI P I I WEXIT 17:40 - 18:15 I 0.58 STWHIP P I WEXIT 18:15 - 19:00 0.75 STWHIP P 19:00 - 20:00 1.001 DRILL P PROD1 20:00 - 22:15 2.25 DRILL P PROD1 22:15 - 22:45 I 0.501 DRILL I P I I PROD1 22:45 - 23:15 0.50 DRILL P PROD1 23:15 - 00:00 0.75 DRILL N DFAL PROD1 10/14/2006 00:00 - 01:15 1.25 DRILL N DFAL PROD1 01:15 - 02:30 1.25 DRILL N DFAL PROD1 Nordic's reel house manifold. Removed BHI GYRO Tool. Won't work with tool string. It has never been a part of tool string. Removed Gyro tool from BHA. Loaded CT with 60.7 bbls of 2 ppb biozan. Rev circulated 20 minutes at 4 bpm and 3000 psi for slack management PT the reel house manifold to inner reel valve. Something is leaking. Track down leaks in pump room and reel house. Pressure test reel valve again. Held 250 and 3500 psi for 10 minutes. PU injector. Cut 26' of coil. MU a-coil connector. Pull test same. Make up electrical connections. Test same. Finish making up a-coil head. Pressure test connector. Pressure test 3-1 /2" x 2-3/8" VBRs. This completes BOP test as per AOGCC. Displace forward through coil while testing VBRs. MU window milling BHA. Stab coil. Surface test tools. Get on well. Run in hole with EDC open. Take diesel rtns to tiger tank. 44k# up wt at 10,000'. ', Log initial GR tie in from 10,200'. Subtract 3' correction. Tag whipstock at 10,348' (pinch point). Started window at 10,348.40 ft / Milling window. Started at 10,348.40 ft. Time drill at 6minlft Op = 2.51 bpm at 1990 psi P off btm = 1875 psi at 2.5 bpm Vp = 405 bbl Stalled at 10,355.2 ft (6.8 ft down tray) PU and restart mill. Having some trouble. Drilling rathole from 10.355 ft to 10, 365 ft. Displacing well to new Flowpro 3% LT and 10ppb KlaGard. TD rathole at 10365 ft, reaming whipstock area and open hole section Dry tagged at 10,365 ft POOH to PU build section BHA OOH, flow check and hold PJSM on BHA handling Lay down motor and mills. Mill gauged at 3.79" and the string reamer at 3.78". MU build asssembly with 3.8 deg mtr and HTC bi-center bit. Run in hole. Test MWD at 300'. Continue to run in hole. Circulate through open EDC to help shear new flo pro. Log gr tie in from 10,270'. Subtract 3' correction. Orient to HS. Run through window, smooth. 43k# up wt off btm. Tag btm at 10,364'. Drill ahead from 10,364'. 2700 psi fs at 2.58 in/out. Baker reports that the DGS has failed. Reboot tool and try the usual procedures. Tool still noYworking. Pull out of hole to replace DGS. Continue to POH for failed DGS tool. Hold PJSM. At surface. Get off well. Unstab coil. LD MWD tools. Pnntetl: 12119/Z007 1U:Z9:OU AM • BPEXPLORATION Page 10 of 30 Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Event Name: REENTER+COMPLETE Contractor Name: Rig Name: Date I From - To I Hours ~ Task I Code I NPT Spud Date: 6/28/1988 Start: 9/24/2006 End: Rig Release: Rig Number: Phase I Qescription of Operations 10/14/2006 02:30 - 06:45 4.25 DRILL N DFAL PROD1 06:45 - 08:00 1.25 DRILL N DFAL PROD1 08:00 - 09:00 1.00 DRILL N DFAL PROD1 09:00 - 11:20 2.33 DRILL N DFAL PROD1 11:20 - 12:00 0.67 DRILL N DFAL PROD1 12:00 - 15:00 3.00 DRILL P PROD1 15:00 - 15:25 0.42 DRILL P PROD1 15:25 - 18:00 2.58 DRILL P PROD1 18:00 - 18:45 0.75 DRILL P PROD1 18:45 - 21:00 2.25 DRILL P PROD1 21:00 - 22:45 1.75 DRILL P PROD1 22:45 - 23:15 0.50 DRILL P PROD1 23:15 - 00:00 0.75 DRILL P PROD1 10/15/2006 00:00 - 03:00 3.00 DRILL P PROD1 ', 03:00 - 03:30 0.50 DRILL P PROD1 03:30 - 05:00 1.50 DRILL P PROD1 05:00 - 07:11 2.18 DRILL P PROD1 07:11 - 07:50 0.65 DRILL P PROD1 07:50 - 08:40 0.83 DRILL P PROD1 MU tool string with replacement DGS. Run complete set of diagnostic tests. Same problem with second tool. Suspect firm ware loaded for gyro data test may be at fault. Attempt to re-load firm ware. Having trouble doing this. Call Anchorage for assistance. Crew change. Still working on BHI Software. Ordered new BHI Power Comms from Anchorage and troubleshooting software. PJSM, PU BHA after finding software problem and Power Comm problem. Stabbed injector head RIH with EDC open and circ at 2.00 bpm to 10, 265 ft Tie-in Corrected -5 ft, SD pump and close EDC, orient TF to HS, RIH and tagged bottom at 10,376 ft Taking some WOB at 10,365 ft W/R 10,365 ft to 10, 3767ft. Drilling Build Section in Zone IV from 10, 377 ft to 10,464 ft (87 ft) HSTF Op = 2.53 / 2.50 bpm at 2775 psi off btm WOB: / ROP = 3-4 kf / 20-70 fph Delta P: 300-500 psi; BHP/EDC = 4,408 psi / 9.74 ppg Vp = 423 bbl's Drilling Build Section in Zone IV from 10, 464 ft to HSTF Op = 2.53 / 2.50 bpm at 2775 psi off btm WOB: / ROP = 3-4 kf / 20-70 fph Delta P: 200-350psi; BHP/EDC = 4,447 psi / 9.79 ppg Vp = 426 bbl's At 10,480 ft projected EOC at 93 deg POOH. Flow check with BHA at surface. PJSM. Get off well. Unstab coil. LD BHA. MU lateral BHA with USMPR res tool and 1.2 deg mtr w/ HTC rebuild bi-center bit. Replace SLB collector on reel swivel. Test all components. Stab coil. Get on well. Run in hole. Log gr tie in from 10,270'. Subtract 10' correction. Log MADD pass down to get resistivity data from 10,370' to 10,479'. 2900 psi fs at 2.42 bpm in/out. Drill ahead from 10,480'. 2800 psi fs at 2.58 in/out. 100-250 DPSI. DHWOB: 2k-3.5k#. IA/OA/PVT: 0/117/417 bbls. BHP/ECD: 4408/9.67 ppg. ROP: 50-80 fph. INC/AZM/TF: 92.2/246.0/90-106R. Wiper trip to window. Hole smooth. Drill ahead from 10,650'. 2800 psi fs at 2.58 in/out. 100-250 DPSI. DHWOB: 2k-3.5k#. IA/OA/PVT: 0/117/417 bbls. BHP/ECD: 4408/9.67 ppg. Continue to hold 95 deg incl. Drilling Pilot Lateral Section in Zone IV from 10, 725 ft TF 90-75R Op = 2.66 / 2.60 bpm at 2750 psi off btm WOB: / ROP = 3-4 kf / 10-30 fph Delta P: 200-350psi; BHP/EDC = 4,430 psi / 9.79 ppg Vp = 445 bbl's Gained 21 bbl of fluid in last 12 hrs which could be the results of Z-33a injection profile Wiper trip to base of WS Drilling Pilot Lateral Section in Zone IV from 10, 801 ft TF 120-140R Printetl: 12/19/2007 10:29:50 Ann • BP EXPLORATION Page 11 of 30 Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Spud Date: 6/28/1988 Event Name: REENTER+COMPLETE Start: 9/24/2006 End: ,Contractor Name: Rig Release: Rig Name: Rig Number: I Date From - To Hotars Task Code NPT Phase 10/15/2006 07:50 - 08:40 0.83 DRILL P PROD1 08:40 - 08:55 0.25 DRILL I P 08:55 - 09:50 0.92 DRILL P 09:50 - 10:05 I 0.251 DRILL I P 10:05 - 10:15 I 0.171 DRILL I P 10:15 - 10:25 0.17 DRILL P 10:25 - 11:25 1.00 DRILL P 11:25 - 12:25 1.00 DRILL P 12:25 - 14:46 2.35 DRILL P 14:46 - 16:00 I 1.231 DRILL I P 16:00 - 19:15 I 3.251 DRILL I P 19:15 - 20:45 I 1.501 DRILL I P 20:45 - 00:00 I 3.251 DRILL I P PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 Description of Operations Op = 2.66 / 2.60 bpm at 2750 psi off btm WOB: / ROP = 3-4 kf / 10-50 fph Delta P: 200-350psi; BHP/EDC = 4,430 psi / 9.79 ppg Vp = 443 bbl's PU and orient TF to LS to ensure no missing the polgan Drilling Pilot Lateral Section in Zone IV from 10, 801 ft TF @ 120E Op = 2.66 / 2.70 bpm at 2650 psi off btm WOB: / ROP = 3-5 kf / 10-50 fph Delta P: 200-450psi; BHP/EDC = 4,428 psi / 9.79 ppg Vp = 440 bbl's Wiper trip to see if the GR tool is working GR dropped from 290 to 87 API units, its working. Drilling in lots of non-productive shale Drilling Pilot Lateral Section in Zone IV from 10, 883 ft TF @ 145E Looking for the exit of this silstone/shale. GR still at 293 API unit Op = 2.66 / 2.70 bpm at 2650 psi off btm WOB: / ROP = 3-5 kf / 50-90 fph Delta P: 200-450psi; BHP/EDC = 4,428 psi / 9.79 ppg Vp = 443 bbl's Increased KlaGard Conc from 10 ppb to 12 ppb by adding 2 drums Orient TF to R-side while PUH on CT Drilling Pilot Lateral in shale from 10, 893 ft TF @ 105-90 R Dropped down to 85 deg before leveling out Op = 2.66 / 2.70 bpm at 2600 psi off btm WOB: / ROP = 3-5 kf / 60 fph Delta P: 200-450psi; BHP/EDC = 4,450 psi / 9.79 ppg Vp = 444 bbl's. Ordered out KlaGard to inc. conc. to 12ppb. Got out 293 API shale at 10,886 ft This sand is not the same as the one above. Loaded pipe shed with 102 jts of liner Wiper trip (clean wiper trip) ,Drilling Pilot Lateral in shale from 10, 950 ft TF @ 50-110R. Op = 2.55 / 2.54bpm at 2600 psi off btm 3050 psi on btm WOB: / ROP = 3-5 kf / 90 fph Delta P: 450psi; BHP/EDC = 4,450 psi / 9.79 ppg Vp = 438 bbl's. Some stacking, PU and pulled to 68k before coming free. Wiper trip, lots of stacking at 11, 081 ftTie-in at RA Maker at 10,353 ft. Correct +7 ft to 10,405 ft, RIH Clean wiper trip Drilling Pilot Lateral from 11,082 ft TF @ 50-110R. Op = 2.55 / 2.54bpm at 2655 psi off btm 3050 psi on btm WOB: / ROP = 2-4.5 kf / 90 fph Delta P: +400 psi; BHP/EDC = 4,450 psi / 9.81 ppg Vp = 439 bbl's. PU and toook survey off btm at 11087 ft Ratty drilling at 11,1.50 ft, could be the conglomerate ZIII look at samples Wiper trip to tbg tail at 10,079'. Mtr work at 10,835'. RIH. Set down at 10,735. PU and run through ok. See minor bobble while RIH at 10,835'. Hole basically smooth and in good shape. Drill ahead from 11,237'. 3000 psi fs at 2.51. in/out. 100-250 Pnntea: ~u~aizuoi iu:za:auAnn BP EXPL~JRATION Page 12 of 30 Qperations Slummary Report Legal Well Name: Z-01 Common Well Name: Z-01 Event Name: REENTER+COMPLETE Contractor Name: Rig Name: Dater ~ From - To Hours Task ~ Code ~ NPT 10/15/2006 120:45 - 00:00 I 3.251 DRILL 1 P 10/16/2006 100:00 - 01:30 I 1.501 DRILL I P 01:30 - 03:30 I 2.001 DRILL I P 03:30 - 05:00 I 1.501 DRILL I P 05:00 - 06:30 I 1.501 DRILL I P Spud Date: 6/28/1988 Start: 9/24/2006 End: Rig Release: Rig Number: .Phase Description of Operations PROD1 dpsi. DHWOB: 3k-4k#. fA/OA/PVT: 32/314/429 bbls. BHP/ECD: 4378/9.66 ppg. INC/AZM/TF: 88.05/322.2/1208. PROD1 Make wiper trip to 10,350'. Several set downs and bobbles. Backreamed each. Overall, the hole is in good condition. PROD1 Drilling Pilot Lateral from 11,400'. 2950 psi fs at 2.62 in/out. 100-300 dpsi. DHWOB: 22k-4.5k#. INC/AZMlTF: 72.5/354/120L. ROP: 50-80 fph. Continue to drop towards Zone 3. PROD1 Make wiper trip to the window. A few bobbles, hole in good condition. PROD1 Drill ahead from 11,550'. at 100 L TF in Zone VI Dropping hole angle Qp = 2.57 / 2.58 bpm at 2650 psi off btm WOB: / ROP = 3-5 kf / 70-80 fph Delta P: 200-450psi; BHP/EDC = 4,585 psi / 9.79 ppg Vp = 404 bbl's 06:30 - 06:50 0.33 DRILL N SFAL PROD1 Leak in hardline ain reel house occurred. SD pump, open baker Choke and informed Nordic of their problem. Fixed hardline and work CT seal on union from mud pump failed. Repaired and PT to 4600 psi, OK Open Baker choke Break circulation. No rig down time. 06:50 - 10:00 3.17 DRILL P PROD1 Drill ahead from 11,550'. at 20- 100 L TF in Zone VI Dropping hole angle Op = 2.57 / 2.58 bpm at 2650 psi off btm WOB: / ROP = 3-5 kf / 70-80 fph Delta P: 200-450psi; BHP/EDC = 4,585 psi / 9.79 ppg Vp = 400/398 bbl's Refer to Remark Section on Reportable Spill at 06:30 hrs 10:00 - 12:00 2.00 DRILL P PROD1 Wiper trip after drilling 150 ft Pulled a little at 11285 ft. 11,200 ft10,830 ft. 10720 ft and 10, 480 ft(EOC). SD pump at base of WS. PUH open EDC and POH to TT at 10, 082 ft RIH at 100fpm to surge flowrate. Tie in at 10,265 ft + 2.5 ft. SD pump, closed EDC and orient TF to HS TF. Status 2 Failed Hall sensor (the EDC piston status is unknown at surface) 12:00 - 14:00 2.00 DRILL N DFAL PROD1 POOH due to failed EDC 14:00 - 14:15 0.25 DRILL N DFAL PROD1 PJSM on BHA handling. Also review Rig Evacufation Procedures. 14:15 - 16:00 1.75 DRILL N DFAL PROD1 Check flow, unstab injector, LD BHA check bit Bit OK, Changed out packoff and installed encoder on level wind Change out EDC 16:00 - 17:45 1.75 DRILL N DFAL PROD1 RIH. 17:45 - 18:00 0.25 DRILL N DFAL PROD1 Log gr tie in. Subtract 10' correction. RIH. 18:00 - 18:30 0.50 DRILL N DFAL PROD1 Orient to go through window. Orienter not working. Try everything possible from surface. HOT still not orienting. 18:30 - 20:15 1.75 DRILL N DFAL PROD1 Pull out of hole to change HOT. 20:15 - 22:00 1..75 DRILL N DFAL PROD1 Stop at 100'. Get off well. POH and inspect coil for flat spots. Found 35% wall loss about 7' above connector. Will need to cut and re-head. LD BHA. Change out problem orienter. 22:00 - 00:00 2.00 DRILL N DFAL PROD1 Hold PJSM. RU coil cutter. Cut 100' of coil. Re-head a-coil. Test same. 10/17/2006 00:00 - 01:00 1.00 DRILL N DFAL PROD1 Continue to re-head a-coil. Pull and pressure test. Test a-line. Printed: 12/19/2007 10:29:50 AM s • BP EXPLORATION Page 13 of 30 Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Spud Date: 6/28/1988 Event Name: REENTER+COMPLETE Start: 9/24/2006 End: Contractor Name: Rig Release: Rig Name: Rig Number: Date From - To Hours Task Code NPT Phase Description of Operations 10/17/2006 01:00 - 02:00 1.00 DRILL N DFAL PROD1 Make up Inteq tools with replacement orienter. Stab coil. Test tools. Get on well. 02:00 - 03:45 1.75 DRILL N DFAL PROD1 Run in hole 03:45 - 04:15 0.50 DRILL N DFAL PROD1 Log gr tie in from 10,280'. Subtract 11' correction. 04:15 - 05:30 1.25 DRILL P PROD1 Orient. Run through window. Increase circ rate. Run to bottom. Had some stacking problems from 11150 ft to 11, 250 ft. Took several attempts to work through. Ratty hole from 11,600 ft to 11,700 ft Worked through and tagged bottom at 11, 700 ft 05:30 - 10:15 4.75 DRILL P PROD1 Drill ahead from 11,700'. at 100 L TF in Zone VI Dropping hole angle Op = 2.45 / 2.46 bpm at 2800 psi off btm WOB: / ROP = 3-5 kf / 70-80 fph Delta P: 200-450psi; BHP/EDC = 4,585 psi / 10.18 ppg Vp = 344 bbl's. Lost 60 bbl of fluid since POOH yesterday at 11,700 ft 10:15 - 13:00 2.75 DRILL N DPRB PROD1 Having trouble getting WOB. PU for wiper trip. Pulled tight at 11,620 ft11, 500 ft, 11,410 and pulled up 70k at 11220 ft. Working tight hole at 11,220 ft, No movement either up or down and no returns PU to 75k and down wt at -5k. The water at 11, 200 is probably the problem PU on annulus to 300 psi and started to get movement on BHA. Cir through CT at 0.5 bom and regain circulation RIH 10 ft and turned around. PUH and worked BHA free, PUH and inc flowrate to 1.5 bpm. Pulled tight in hot shale between 10990 ft to 10670 ft Above WS and open EDC 13:00 - 16:00 3.00 DRILL P PROD1 POOH to look at bit motor and talk with town on plan forward. 16:00 - 18:00 2.00 STKOH P PROD1 LD BHA, Inspect Bit. Decision made to OHST at 10630'. No cmt plugback required. BHA#16 - PU HCC R60ST and 2.0 deg motor. Crew change. 18:00 - 18:30 0.50 STKOH P PROD1 PJSM for MU of BHA. 18:30 - 19:00 0.50 STKOH P PROD1 PU CoilTrak tools. Verify motor bend (2.0 deg) and offset. 19:00 - 22:00 3.00 STKOH P PROD1 RIH w/ open EDC pumping at 0.8 bpm. Tie in above window; -7ft correction. Tag at 10,438'. Tag at 10,442'. Tag repeatedly, than made it through pumping 2.3 bpm and moving at 30 ft/min. Run in clean to 10,700'. Work pipe below sidetrack point with toolface opposite of drilled toolface to ensure brass cap is off. Stack weight at 10743'. Start new mud in the hole. 22:00 - 00:00 2.00 STKOH P PROD1 Orient to 170 deg ROHS toolface. Trough up from 1.0,630' to 10,610' at 30 fph, 2.75 bpm. New mud around. Trough down 10,610' to 10,630' at 22 fph, 2.75 bpm. Showing departure at NBI (-3 deg). Mud swap complete. 10/18/2006 00:00 - 04:30 4.50 STKOH P PROD1 Trough up to 10595' to ensure sufficient trough length. Trough down from 10,600' to 10,630' at 30 fph. Start ST @ 10630' w/ 170R. Time drill 0.1'/6min to 10631'. Time Drill 0.1'/3min to 10,633'. Drill ahead at 12fph to 10640 then increase speed to 25fph. Observe inclination drop with MWD tools. Drill to 10654' while rolling to a 90R toolface and then HS to set up for the start of lateral. 04:30 - 05:50 1.33 STKOH P PROD1 Backream with right and left tool face. Conduct a kick while drilling drill 05:50 - 06:15 0.42 STKOH P PROD1 POOH for lateral BHA and openhole was clean Printed: 1z/19/zoo? t 0:29:SU AM BP EXPLORATION Page 14 of 30 Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Spud Date: 6/28/1988 Event Name: REENTER+COMPLETE Start: 9/24/2006 End: Contractor Name: Rig Release: Rig Name: Rig Number: Date From - To Hotars Task Code NPT Phase' Description of Operations 10/18/2006 06:15 - 08:00 1.75 STKOH P PROD1 POOH circ thru EDC 2.6/2300 08:00 - 08:30 0.50 STKOH P PROD1 LD sidetrack BHA 08:30 - 08:45 0.25 BOPSU P PROD1 Function test BOP rams as part of bi-weekly BOPE test 08:45 - 10:30 1.75 DRILL P PROD1 MU lateral assy w/ HYC bi bit on 1.2 deg motor w/ resistivity 10:30 - 12:40 2.17 DRILL P PROD1 RIH w/ BHA #17 circ thru EDC 1.0/1800 12:40 - 13:30 0.83 DRILL N SFAL PROD1 At about 10200', SWS has an e-counter problem-the depth is 14:00 - 15:30 01.50 DRILL N I SFAL PROD1 15:30 - 16:25 I 0.921 DRILL I P I I PROD1 16:25 - 17:10 I 0.751 DRILL I P I I PROD1 17:10- 17:50 0.67 DRILL P PROD1 17:50 - 18:00 0.17 DRILL P PROD1 18:00 - 22:00 I 4.001 DRILL I P I I PROD1 22:00 - 22:30 I 0.50 DRILL P PROD1 22:30 - 23:00 0.50 DRILL P PROD1 23:00 - 23:30 0.50 DRILL N DPRB PROD1 23:30 - 00:00 0.50 DRILL P PROD1 10/19/2006 00:00 - 03:00 3.00 DRILL P PROD1 03:00 - 05:00 2.00 DRILL P PROD1 05:00 - 05:40 0.67 DRILL P PROD1 05:40 - 07:00 1.33 DRILL P PROD1 07:00 - 07:20 0.33 DRILL N DFAL PROD1 07:20 - 09:10 1.83 DRILL N DFAL PROD1 09:10 - 10:00 0.83 DRILL N DFAL PROD1 not tracking the running speed (this is usually caused by electrical interference). Do the usual checks, then shut down a rig generator and find that it works normally, add the second generator and okay too Log tie-in down from 10270' at min pump, Corr -30' Begin wiper to TD. After bringing pump up to rate, found that the same problem was occurring. Park above window and let SWS ET investigate. Appears to be electrical interference from somewhere. As in the past, ET ran jumper from injector encoder to ops cab and counter works like it should .. . Wiper to TD. Set down numerous times at 10383'. Had to ream at 3'/min at reduced pump from 10383-10480' Ream 10626-TD at 2.0/2230 at DTF at 2-5'/mines/ no wt loss, minor dill incr. Found TD at 10655'. Backream at 908 2.3/2600 at 3'/min w/ minor overpull at 10645'. Ream back to TD at 2.3/25001358 at 2.5'/min while logging missing res data PVT 339 Drill from 2.6/2850/458 to 10670' and res tool quit. Getting intermittent signal. Decide to drill for a while. Drill to 10684' and suspect it may be short at reel due to voltage changes Wiper to window and tool started working. Was clean thru sidetrack area. Head back to TD Drill 2.6/3170/908/2700# to 10,800' at -25fph with intermittent singal that would be very difficult to troubleshoot. Drill ahead with good surveys and some small gaps in the log. ROP slowed to 10'/hr. Make wiper to window. 'Wiper trip to window. Log 10630' - 10675' on the way back in the hole to fill in a gap in the RES data. Set down at 10710'. We are in the plugback hole. Pick-up to 10,560'. Re-log 10630' - 10675'. Verify we are in the main wellbore, continue in hole to TD Drill 2.55/2870/908/4200# to 10802'. Slow ROP (-5fph), good weight transfer. Break through hard spot at 10,803'. Ran into another hard spot at 10805' to 10806'. Drill 2.55/2930/90R/2000#/30fph. The hard spot deflected the bit up to 92 deg. Have to drill at 1508 to drop back to 8740ss, INC at 85 deg. Drill 2.55/2900/3900# holding 8740'ss. Hard drilling at 10910'-10918'. Drill to 10950'. Wiper trip to the window. Clean hole. Drill from 10950' 2.52/2940/758 w/ 100-400 psi dill, 1.5-4k wob at 88 deg to 10980' where the orientor quit working Wiper to window was clean POOH circ thru EDC 2.5/2300. Plugged off'out' MM w/ cuttings at 2000'. Circa to surface, then did a 200' jig LD drilling BHA. Found orientor works fine in one direction, but Pfiflt8d: 12/19/2007 10:29:50 AM BP EXPLORATION Operations Summary Report Page 15 of 30 ~ Legal Well Name: Z-01 Common Well Name: Z-01 Spud Date: 6/28/1988 Event Name: REENTER+COMPLETE Start: 9/24/2006 End: Contractor Name: Rig Release: Rig Name: Rig Number: Date From - To Hours Task Code NPT Phase I Description of Operations 10/19/2006 09:10 - 10:00 0.83 DRILL N DFAL PROD1 10:00 - 13:45 I 3.751 DRILL I P I I PROD1 13:45 - 14:35 0.83 DRILL N DFAL PROD1 14:35 - 16:25 1.83 DRILL N DFAL PROD1 16:25 - 16:40 I 0.251 DRILL I N DFAL PROD1 16:40 - 17:15 0.58 DRILL N DFAL PROD1 17:15 - 17:45 I 0.501 DRILL I N I DFAL I PROD1 17:45 - 18:40 I 0.921 DRILL I N 18:40 - 20:00 I 1.331 DRILL I P 20:00 - 23:00 I 3.001 DRILL I N 23:00 - 00:00 I 1.001 DRILL I N 10/20/2006 00:00 - 00:45 0.75 DRILL N DFAL PROD1 00:45 - 02:40 1.92 DRILL N DFAL PROD1 02:40 - 02:55 0.25 DRILL N DFAL PROD1 02:55 - 04:00 1.08 DRILL N DFAL PROD1 04:00 - 04:20 I 0.331 DRILL I N 04:20 - 07:30 3.17 DRILL P 07:30 - 09:15 I 1.751 DRILL I P needs PC commands to function right in the other direction. Will keep it available and will run the backup that is on location while expedite delivery of the other backup from Anchorage. Bit had no wear, minor chips on gauge, and was BU PVT 238 Cut off CTC. Pump slack back, then cut 120' as part of SWS chrome management plan. Install CTC, head up BHI. PT 35k, 3600 psi MU drilling BHA w/ 1.2 deg motor RIH w/ BHA #18 circ thru EDC 0.85/1220 while weight up mud system from 8.6 to 9.1 ppg Log tie-in down, Corr -8.5' RIH thru window, clean. One setdown at 10379'. Precautionary ream at 10'/min and 2.2 bpm w/minor wt loss and MW spots. RIH thru OH sidetrack area, clean at 2.2 bpm, 20'/min Continue wiper in hole and set down at 10705'. Initial pickups were clean, but started losing ground and having up to 15k overpulls. Slow ream at 2'/min at reduced rate of 2.2 bpm and finally cleaned up (GR shows hot spot 10685-700'). Now have 9.1+ in/out Continue cautious wiper to TD from 10710'. Set down at 10805'. Pick up w/15k over and ream back through. Clean remainder of hole to TD. Drill with 2.6/3530/2700#/40fph to 11027. GR is maxing out when on bottom. The new DGS is suspected to be the problem. Precautionary ream from 10810' to 10700', hole in good shape. Trip to pick up the DGS used on the last run. POOH for failed GR. Precautionary ream OHST area 10630' - 10590' at 1358. Hole clean to the window. Overpull at the window, suspect cuttings build up, RIH and circulate clean, pull back thru clean. Open EDC above window and circulate out of hole 2.8/2950psi. Perform safety meeting for laying down BHA while tripping. Jog pipe 200' at surface, only flushed out a few extra cuttings. Lay down BHA, swap out DGS. motor was tight, bit graded 1,1 minor chiped cutter on the wing, balled up with one plugged jet on the nose will rerun. MU BHA #19, new DGS, rerun HYC bi bit. RIH pumping at 0.5 bpm tie-in log down. correction -9ft Run thru window clean, set down at 10380 and again at 10388. Ream down at 2.2 bpm and 10'/min. Clean past the OHST at 20fpm and 1.2bpm. Set down at 10699', Ream down at 2fpm/2.2 bpm to 10715'. Clean the rest of way to TD. log missing GR section 10975-TD Free spin 3250 psi. Begin planned slow drop from 8720' TVD to 8870' TVD while drill with 2.6/3600/908 to 11120' and see resistivity change to high water/hot shale at 11070' Perform wiper to window while weight up from 9.1 to 9.6#. Also need to discuss geology since this shale is about 25' deeper than in the pilot hole. Had numerous overpulls w/ MW while PUH at 10'/min. Wiper back to TD wasn't too bad and the last 100' was clean DFAL PROD1 PROD1 DFAL PROD1 DFAL PROD1 DFAL PROD1 PROD1 PROD1 Printetl: 12/19/2007 10:29:50 AM ` 's ~ BP EXPLORATION Page 16 of 30 Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Spud Date: 6/28/1988 Event Name: REENTER+COMPLETE Start: 9/24/2006 End: Contractor Name: Rig Release: Rig Name: Rig Number: Date Frorn - To Hours Task Code NPT Phase Description of Operations 10/20/2006 09:15 - 11:00 1.75 DRILL P PROD1 Drill from 11120-200' 2.65/3400/908 w/ 100-400 psi dill, 0.5-3.Ok wob w/ 11 ppg ECD and initial 9.3# returns 11:00 - 14:00 3.00 DRILL P PROD1 100' wiper from 11200' was clean w/ 9.6# mud thruout system, PVT 285 Drill from 11200' 2.45/3250/1208 and continue slow drop to landing by 11600'. Took 30 min to get by 11213' then get drilling break and drill low api sand to 11300' w/ NB incl @ 78 deg 14:00 - 14:40 0.67 DRILL P PROD1 Wiper to window was clean w/ minor overpulls at 10901', 10791', 10730', 10477' 14:40 - 15:10 0.50 DRILL P PROD1 Wiper to TD was clean except for MW at 10434' and 10799' PVT 273 15:10 - 20:10 5.00 DRILL P PROD1 Drill from 11300' 2.4/3300/1108 w/ 1-4k wob, 200-600 psi dill, w/ 11.07 ECD using 9.6-mud while continuing slow drop of 78 deg NBI to 42P? Res continues to show wet and mud shows no sign of oil. ROP tapered to 20fph and 2300# WOB. 20:10 - 21:00 0.83 DRILL P PROD1 Wiper to tubing tail was clean w/ minor overpull at 10900'. 21:00 - 21:20 0.33 DRILL P PROD1 tie-in log down. tort +2' 21:20 - 22:30 1.17 DRILL P PROD1 Wiper to TD. Setdown at 10399', p/u and ream through. OA at 420 psi -bleed to 100 psi. Setdown at 10698', and 10800'. Inteq depth not updating, work problem while run it the hole. 22:30 - 23:15 0.75 DRILL N SFAL PROD1 Inteq cannot get data feed from injector. Switch to acquire WITS data from SLB. This should work at drilling speeds but will not update quick enough during wipers -not so. Try another fix that involves removing the recorded ROP, it is working when running as a tie-in log. The logs will be merged later. 23:15 - 23:40 0.42 DRILL P PROD1 DriII from 11,450' 2.5/3600/30L w/ 3400 wob, 40fph, 400 psi dill, w/ 10.95 ECD. Troubleshoot problem and find the depth encoder is bad. 23:40 - 00:00 0.33 DRILL N SFAL PROD1 Pull to 11,441' and circulate while changing the Inteq depth encoder. 10/21/2006 00:00 - 02:30 2.50 DRILL N SFAL PROD1 Changing encoder is taking much longer than anticipated. Work pipe to 60k but no depth at all. Shut down. pumps to relax ECD while finishing up the encoder work. Pull free at 55k. Found the encoder had a stripped out lovejoy connection but there is still a depth problem. Work pipe while Inteq continue to troubleshoot software problems. Swap back to WITS and take data as a tie-in. Tag 9ft high. Log GR spike at 11390' to confirm depth. Make +10' correction. 02:30 - 03:10 0.67 DRILL N SFAL PROD1 Log missing data from 11440' - TD. 03:10 - 04:10 1.00 DRILL P PROD1 Drill from 11469' with 2.35/3450/60L 3.2k wob, 11.13ppg ECD, FS 3200psi. Drilled to11493. There are a couple of hot GR areas that the Geo .needs to make sense of. NBI is 72 deg and we want to make sure we land in the target sand. 04:10 - 06:15 2.08 DRILL N PROD1 Make wiper to window while geo looks at correlations. Minor overpull at 10,900'. Setdown at 10584' and 10900'. Rest of hole was clean 06:15 - 10:30 4.25 DRILL P PROD1 Drill from 11493' 2.45/3450/80L w/ 100-400 psi dill, 1-4k wob w/ 10.7 ECD at 74 deg following planned drop to the target. Slow going in general. Getting quick stalls and high vibration which is out of spec. Work w/ wob, pump rate, etc w/ no real improvement. Elect to trip to check BHA rnncea: iuiai~wr iv:ca:ou„m BP EXPLORATION Page 17 of 30 Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Spud Date: 6/28/1988 Event Name: REENTER+COMPLETE Start: 9/24/2006 End: Contractor Name: Rig Release: Rig Name: Rig Number: Date ~ From - To I Hours I Task I Code I NPT I Phase I Description of Operations 10/21 /2006 110:30 - 11:20 11:20 - 13:00 13:00 - 14:50 14:50 - 19:20 0.83 DRILL P 1.67 DRILL P 1.83 DRILL P PROD1 PROD1 PROD1 Wiper to window was clean except for OP at 10900' POOH to check BHA LD BHA. Bit was 1-2-I and BU w/ one plugged nozzle w/ stator rubber. Changed bit, motor RIH w/ BHA #20, HCC rebuilt bi-bit. Had depth control problems w/ BHI encoder. Problems found with coupling binding up. Swap Encoder and change out coupling. Yo-yo pipe to work on encoder calibration. Depth control issues should be a thing of the past.... Fixed depth problem. RIH pumping at 0.6bpm. Log tie-in down. -5' correction. Minior setdowns at 10586' , 10915, 11500'. Drill from 11568' 2.45/3300/70L/ w/ 200-400 dill, 1.5-3k wob w/11.4 ECD at 79deg. Ratty drilling from 11,580'. The RES tool is flat lined. Got the go ahead from town to drill thru this shale (41 N?) before tripping. Geos want the RES tool for drilling the sand package below. RES tool came alive-cross our fingers that it hangs in there. Drill from 11,630' 2.5/3270/90L/ w/ 300-500 dill, 1500# wob w/11.1 ECD at 79deg. Ratty drilling 11662' - 11680'. Currently 84 deg and the interpretation is that we are below the 41 N. The plan is to level off in the sand package below. Wiper trip to window. Pumping 2.5 bpm, CT weight 38k. Overpulls and MW at 11400' - 11370'. Overpull and MW and a majority of the high GR areas to 10700'. RIH clean to 10732'. setdowns at 10732', 10908', and 11073'. Start new mud down the hole. Old mud has 1090' and 2% solids. Drill from 11,720' 2.5/3400/30L w/ 200-400 dill, 1000# wob w/11.4 ECD at 85 deg. Swap to right at 11800'. Drill to 11850' Wiper to window 2.5/3200 was clean w/ no OP's! Wiper to TD 2.2/2800 w/ set downs at 10900, 11280' ,Drill from 11850' 2.5/3200/1508 w/ fresh mud and 91 deg at bit at 8882'TVD. Begin slow drop to 88 deg to find a better sand. Get into a probable clay streak at 11960' and spend 30 min trying to make hole w/slightly sticky pickups PVT 368 Stuck CT on pickup at 11963' while pull to 60k. SD pump and wait 20 min. Pull again to 82k w/o movement. Can move orientor okay. WOB does not change, so are stuck at the top of the BHA or CT. Pull a bind at 80k and circ 2.2/2760 w/ full returns at 11.0 ECD while wo crude. NBI=90 deg. After 20 min of circ, pull free at 85k Slow wiper to window w/ overpulls in the normal areas, plus a few more Pull thru window, clean. Pump 2.5/3200 to EOT to get solids out of 7". Inspect minor dings on CT while RIH to logging depth Log tie-in down from 10250', corr -14' Wiper to TD w/ setdown at 10900' Drill from 11963' and back in a sand. Drill to 12000'. Did an 200' wiper and still sticky at 11963'. Work to clean it up for 15 min Drill from 12000 to 12013' and lost circ at 12010' Wiper while check loss rate at 2.4/0.7/2800. Had to work to get 4.501 DRILL I N SFAL I PROD1 19:20 - 20:35 1.25 DRILL P PROD1 20:35 - 20:50 0.25 DRILL P PROD1 20:50 - 21:50 1.00 DRILL P PROD1 21:50 - 00:00 2.17 DRILL P PROD1 10/22/2006 100:00 - 02:30 I 2.501 DRILL I P I I PROD1 02:30 - 04:30 I 2.001 DRILL I P I I PROD1 04:30 - 07:00 I 2.501 DRILL I P I I PROD1 07:00 - 07:50 0.83 DRILL P PROD1 07:50 - 08:45 0.92 DRILL P PROD1 08:45 - 11:30 2.75 DRILL P PROD1 11:30 - 12:30 I 1.001 DRILL I N I STUC I PROD1 12:30 - 13:30 I 1.001 DRILL I P I I PROD1 13:30 - 13:50 I 0.331 DRILL I P I I PROD1 13:50 - 14:20 I 0.50 DRILL I P I I PROD1 14:20 - 15:30 1.17 DRILL P PROD1 15:30 - 16:50 1.33 DRILL P PROD1 17:05 - 17:55 I 0.831 DRILL I P I I PROD1 Printed: 12/19/2007 10:29:50 AM BP EXPLORATION Page 18 of 30 Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Spud Date: 6/28/1988 Event Name: REENTER+COMPLETE Start: 9/24/2006 End: Contractor Name: Rig Release: Rig Name: Rig Number: Date .From - To Hours Task Code -NPT Phase _ Description of Operations 10/22/2006 17:05 - 17:55 0.83 DRILL P PROD1 uphole past 11963'. Very sticky at 11963', losses probably not 17:55 - 20:00 I 2.081 DRILL I N 20:00 - 22:00 I 2.001 DRILL I N 22:00 - 00:00 I 2.001 DRILL I N 110/23/2006 100:00 - 02:00 02:00 - 02:30 02:30 - 04:00 2.001 DRILL I N 0.50 DRILL N 1.50 DRILL N 04:00 - 04:15 0.251 DRILL ( N 04:15 - 05:10 0.92 DRILL P 05:10 - 06:15 1.08 DRILL P 06:15 - 06:35 0.33 DRILL P 06:35 - 07:45 I 1.171 DRILL I N 07:45 - 12:30 I 4.751 DRILL I N helping. Continue wiper to window while order mud and discuss. Lots of overpull areas, worst it's been, but probably due to losses now DPRB PROD1 Park at 10330' (above window). Open EDC. Wait on orders and fluid. Periodically move pipe and fluid in coil. Fill across the top every 30 mins, static loss rate 15 bph. ECD 8.8 ppg. DPRB PROD1 POOH to lay down RES tool. Fill hole across the top. Lost 30 bbls on trip out. Pop off lubricator and visually inspect the last 100' of coil. Minor wear 10' above coil connector (OD 2.355") but not enough to warrant cutting coif. We will continue to monitor on future trips. PJSM for handling the BHA while tripping out of the hole. DPRB PROD1 Lay down BHA and remove the RES tool. The motor is tight and bit is in good shape (2/1) -rerun both. Meanwhile spot an empty lowboy under the reel house and take measurements. It is much easier to visualize with the trailer in place. Both Veco and SLB personnel agree setting the reel at an angle on the trailer on the truck and pulling forward a couple feet so the door can close might work. We will need a crane on location to position the reel properly. MU BHA #21. Losses remain at 15 bph. DPRB PROD1 RIH with BHA#21while keeping hole full. Re-run motor and HCC bi-bit. 490 bbl of mud is on location. MI is building another 580 bbls of mud. DPRB PROD1 Log tie-in down +7' correction. DPRB PROD1 RIH pumping 1.5 bpm /zero returns. Setdown at 11078'. Bring rate up to 2.2 in / 0.4 out. Set down at 11210', 11455', 11659', 11802'. Tag bottom with 2.2 in / 1.5 out. Looks like we may have sweeped some solids into the loss zone on the trip in. Clean both ways past sticky area at 11963'. DPRB PROD1 Re-log 11995 to TD. 80 bbl of losses in the last hour. PROD1 Drill from 12013' 2.42 in/1.36 out/2930/40R 2-4k wob, 10.84 ECD. PU clean past loss zone, 40k coil weight. PROD1 Drill from 12041' 2.44 in / 1.08 out/ 2750 / 2-4k wob 10.64 ECD to 12104' 2.4/0.8 PROD1 100' wiper while tighten up leaking connection at reel swivel. Restart pump and head to TD w/ no returns. Start drilling and get minimal returns back 2.4/0.35/2700. Appears that packing off is occurring above the loss zone. Getting low on fluid and vac truck is 1.5 hrs away PVT 140 DPRB PROD1 Wiper to window while wo mud. After pulling above 11950', loss rate improved to 2.4/0.65. Continue wiper to window at 1.6/0.3/1850. Have trouble getting by 11715-600'. Incr pump rate. Swivel started leaking again and appears to have a blown gasket. Continue POH to window w/minimal pump to keep hole full, but is difficult to get by shales w/o motor. Leak continued to get worse so SD pump on the CT and fill hole w/ charge pump down the BS. Pull clean from 11200' and back thru window PVT 86 DPRB PROD1 Park at 10300'. Replace gasket in leaking reel swivel connection. PT at 4400 psi. Circ thru bit at 0.7/1500 for 4 bbls w/o returns. SI returns @ rnncea: iznaizuui w:zxouHm ! ~ BP.'EXPLORATION Page 19 of 30 Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Spud Date: 6/28/1988 Event Name: REENTER+COMPLETE Start: 9/24/2006 End: Contractor Name: Rig Release: Rig Name: Rig Number: Date From - To Hours Task Code NPT Phase Description of Operations 10/23/2006 07:45 - 12:30 4.75 DRILL N DPRB PROD1 choke. Pump down CT and move pipe occasionally while wo mud. Fill hole down BS occasionally at 10 bph loss rate 12:30 - 12:40 0.17 DRILL P PROD1 Log tie-in, corr +1.5'. Have 340 bbls in pits, 290 bbls just arrived. MI mixing another 580 bbls 12:40 - 14:05 1.42 DRILL P PROD1 Start pump in OH at 2.0/2600 w/o retums. No set downs until 11215' area. Increase pump rate to 2.5/3000 w/ 0.3 bpm returns and take some time/trys to clean out. Continue in hole to the next one at 11270', 11340', 11440'. After 11560', hole was relatively clean and returns increased to 0.6 bpm and continued increasing until 11980'/ 1.85 bpm, but by 12105' were 1.3 bpm and upon tagging TD were 1.0 bpm PVT 482 14:05 - 15:25 1.33 DRILL P PROD1 Drill from tag at 12102' 2.35/1.08/3000/808 w/ 100-300 psi dill w/ 2-3.5k wob at 94 deg, ECD 10.7 in what acts like rubble. Took another drink at 12111' where loss rate went to 0.1 bpm for about a minute, then slowly regained original 1.0 bpm. At 12130', level out in preparation to begin drop to Zone 2 TD 2.37/0.9/1358 w/100-300 psi dill w/ 3-4.5k wob at 93 deg. See hot GR at 12105'. Drills like sand, returns are not steady, but vary between 0.7-1.2 bpm PVT 355 15:25 - 15:50 0.42 DRILL P PROD1 Temporarily lost full returns at 12150' w/ no abnormal drilling events. Assume packing off above loss zones. PUH 41 k and begin wiper to 11900' while begin to get returns back at 0.3 bpm. Above 12111' returns increased to 1.1 bpm, decreased to 0.45 bpm at 12010' and decreased to 0.25 bpm by 11900'. Continue wiper after began to have overpulls at 11910'. Started pulling tighter and losing more returns, having to cycle to get further up hole. Continued pulling up hole to 11670' and eliminated overpulls, but returns were still only 0.3 bpm 15:50 - 16:05 0.25 DRILL P PROD1 Wiper back in hole 2.37/0.4 was clean to TD. Retums started increasing at 11880'/0.6, 11920'/0.75, 12010'/0.95, 12040'/0.4, 12090'/ 1.0, 12150'/1.0 PVT 280 16:05 - 17:10 1.08 DRILL P PROD1 Drill from 12150' in a rubble/shale? to 12161' 2.38/0.85/3000/1208 Drill from 12161' in slower, but steady drilling 2.32/0.6/2900. This may be the base of the 41 N. NBI is now 88 deg and are planning to hold 90 deg here 2.35/0.3/2900/908 PVT 160 Full vac w/ 290 bbls just arrives 17:10 - 19:15 2.08 DRILL P PROD1 Drill from 12176' 2.50/0.5/3000/908 w/ 88 deg on NBI. Slow drilling at 12188', short trip to 11930 was clean. Run back to bottom 1.1/0.0 with set down at 12130'. Drilling break at 12196'. PVT 231 19:15 - 19:50 0.58 DRILL P PROD1 Drill from 12196' 2.4/0.45/3200/1208 2-4k wob, 10.8 ECD. Pulled heavy off bottom at 12210' so short trip to 12,000'. Zero returns when back on bottom drilling. Concerned with packing off so time for wiper back to window. TD 12220' PVT 160. 19:50 - 23:15 3.42 DRILL P PROD1 Wiper to window. Drop rate at 11900' to save mud, rates = 1.2/0.1. MW 11650' - 11525'. PVT 125 Full vac w/ 290 bbl arrived on location. Clean to the window with minor motor work at 11650'. MW on the trip in at 10,450', set downs at the normal shale intervals. Returns finally came back when we tripped past 12120' (1.1/0.5)?? It was just a spurt and didn't last long. Set down at 12160' with sticky pickups -clean up 12160' to TD, before going back to drilling. PVT 232. Another 290 bbl on location. rnntea: unaizuui ~u:zaauAna BP EXPLORATION Page 20 of 30 Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Spud Date: 6/28/1988 Event Name: REENTER+COMPLETE Start: 9/24/2006 End: Contractor Name: Rig Release: Rig Name: Rig Number: Date From - To Hours Task Code NPT Phase Description of Operations 10/23/2006 23:15 - 00:00 0.75 DRILL P PROD1 Drill from 12220' 2.4/0.0/2900/1408 2-3k wob 10.55 ECD. Seem to be drilling decent sand. NBI 84 deg. Plan is to try and level off in this sand. PVT 339 10/24/2006 00:00 - 01:00 1.00 DRILL P PROD1 Drill from 12275' 2.4/0.01l2900/60L to 12306'. PVT 231 01:00 - 01:35 0.58 DRILL P PROD1 Short trip to clean hole and check on 12160' - 12190' shale area. Pull 20k over from 12090' to 11980'. Assume it's because of cuttings build up. Only a few minor wt bobbles across the shales on the way back to TD. PVT 163 A Vac truck with 290 bbl of mud is pulling on location. Another truck is 45 mins away. 01:35 - 03:30 1.92 DRILL P PROD1 Drill from 12306' 2.4/.03/90L 2-4k wob NBI=89 deg. The plan is to hold this angle to 12350' then start the drop into Zone 3. Slow drilling at 12,310' - 12,323'. Zone 3?? Made 5' in the last hour. PVT 153 03:30 - 06:45 3.25 DRILL P PROD1 POH to check bit. There were a few minor overpulls from 12165'- 11900'. Pulled up to 65k at 11324' and lost the trickle of returns we had. RIH and pull thru clean. Smooth pulling the rest of the way to the window. PVT 56. Vac w/ 290 bbl is pulling on location. Pull to surface filling across the top. Lost 23 bbls in cased hole over normal fill PVT 267 06:45 - 07:30 0.75 DRILL P PROD1 LD drilling assy. Bit was 7-3-cored on the nose and balled up w/ one PN. Motor was okay, but elected to LD for hours 07:30 - 10:30 3.00 DRILL P PROD1 Cut off CTC and 100' of CT for chrome management. Install new CTC. PT 37k, 4000 psi. Rehead BHI Fill hole and taking 10 bph static 10:30 - 11:40 1.17 DRILL P PROD1 MU BHA w/ RR bicenter bit and res tool 11:40 - 13:30 1.83 DRILL P PROD1 RIH w/ BHA #22 circ thru bit 0.3/1000 w/o returns 13:30 - 13:50 0.33 DRILL P PROD1 Log tie-in down from 10270', Corr -5' 13:50 - 14:40 0.83 DRILL P PROD1 Wiper to TD 2.38/3120 was clean to 11215'. Took about 20 tries to get by and after about 5 tries started getting returns which increased to 1.5 bpm at times. Had to drill thru it, and then returns went to zero 14:40 - 15:45 1.08 DRILL P PROD1 Tag upon the next shale at 11273' and spend 15 minutes to get thru. See 11335', then relatively clean to 12165', although saw loss zones at 12010' and 12111' 15:45 - 17:10 1.42 DRILL P PROD1 Work to get thru 12165' 2.12/0.4. Lots of stalls, overpulls, less than 0.5 bpm returns. Several 50-100' wipers. Try to drill it and get to 12181'. Temporarily give up and wiper back to 11950 to log MAD pass before res tool dies (has been intermittent) PVT 387 17:10 - 18:00 0.83 DRILL P PROD1 Log missing resistivity data down from 12000' bit depth at 300'/hr 2.35/0.25/3250. Logged down to 12,180'. Pick up and got bit stuck. Worked free. 18:00 - 19:40 1.67 DRILL P PROD1 Work to get back to bottom. 1.7 / 0.2 bpm, stack wt at 12,185', Bit may be balled up. BHA acts like it is packed off. Stacking wt and overpull up to 66K at 12,170', Work pipe, No returns, Not able to get below 12,185'. Overpull to 60K, orient TF to Left and break free, orient to right. Back ream slow, Pulling better at 12,140', Back ream at 7 fpm, 1.9 / 0.3 bpm. Back ream with 38K up wt at 12,030'. Printed: 12/19/2007 10:29:50 AM • BP EXPLORATION Operations: Summary Report Page 21 of 30 Legal Well Name: Z-01 Common Well Name: Z-01 Spud Date: 6/28/1988 Event Name: REENTER+COMPLETE Start: 9/24/2006 End: Contractor Name: Rig Release: Rig Name: Rig Number: Date. From - To Hours Task Code NPT Phase Description of Operations 10/24/2006 19:40 - 21:30 1.83 DRILL N STUC PROD1 Overpull at 11,990'. Work pipe up and down, pulled to 70K. 21:30 - 22:15 I 0.751 DRILL I P 22:15 - 00:00 1.75 DRILL P 10/25/2006 00:00 - 00:15 0.25 DRILL P 00:15 - 01:00 0.75 DRILL P 01:00 - 07:00 6.00 BOPSU P 07:00 - 08:15 I 1.251 DRILL I P 08:15 - 09:00 I 0.751 DRILL I P 09:00 - 11:00 2.00 DRILL P 11:00 - 11:20 0.33 DRILL P 11:20 - 13:15 1.92 DRILL P 13:15 - 13:45 I 0.501 DRILL I P 13:45 - 16:15 I 2.501 LCR I P 16:15 - 16:50 I 0.581 LCR I P 16:50 - 17:10 I 0.331 LCR I P 2.0/ 0.1 bpm, no returns to clean BHA. Stack 25K, not able to go down, stuck at 11,990'. Bullhead down backside at 0.8 bpm and pop free. RIH to 12090' free, POH at 10 fpm at 42K up wt. POH to 11600'. Swap to normal circ. PROD1 POH at 30 fpm while circ 1.1 / 0.3 bpm. POH clean to window. PROD1 POH while circ across the top to fill hole. PROD1 SAFETY MEETING. Review procedure, hazards and mitigation for laying out drilling BHA. PROD1 Lay out drilling BHA. Bit had 1 plugged port on side, bit was balled with white clay. PROD1 Pressure /Function test BOPE. Test witness waived by AOGCC inspecter, Jeff Jones. Fill hole w/ 25 bbls PROD1 MU drilling BHA w/ 3.75" DS49 bit and w/o res tool. Stab onto well PROD1 Open EDC and circ at surface while WOO Receive orders and give crew information/discussion meeting PROD1 RIH, circ thru EDC getting partial retums 0.3/0.2/900 PROD1 Log tie-in down from 10270', Corr -8' PROD1 RIH thru window, clean. Perform wiper to TD at 2.1/0.3/2530/DTF. Set down in shale at 10585'. Took several tries to get thru. OH sidetrack was clean. See 10900' and all the other shales. 11215' and 11273' took a minimal amount of tries to get thru. Set down at big loss zone at 12010' and returns increased to 1.0 bpm. Work thru then set down at 12027' and returns increased to 1.2 bpm. PU was normal at 39.8k. Drill thru it. Continue wiper in hole 2.12/1.05/2640 to 12093' and getting ratty and losing wt-deep enough, but now have 1.05 bpm retums PROD1 Wiper to 11950' 2.1/1.0 was clean while conduct prejob mtg. Wiper back in hole was clean to 12120' with return rate decreasing after lower loss zone at 12111' to 2.1/0.6/2540. Wiper up hole 41.8k past lower loss zone, 40.5k past upper loss zone, 39.8k at 11900' Remove pump #2 suction screen. Swap to pump #2 PROD1 Wiper between 11900-12120' at 5'/min at avg 2.1/0.6 bpm w/ 9.6 FloPro mud while mix MI Form-a Squeeze. Mixed 32 ea 40# sx in 16 bbls of 9.6 premixed NaCI brine. As density/viscosity increased, there is less venturi at hopper so had to mix slower. Let stir for 20 min. Too aired up to weigh it. Continue to recip over 11900-12120' 2.0/0.36 PROD1 Load CT w/ 19 bbls 10.15# Form-A-Squeeze at 2.0/0.35/2600 while continue to recip over 11900-12120' at 5'/min while pumping pill thru MWD, motor and bit. Displace FASQ w/ 9.6# FloPro PROD1 At 5 bbls before calculated pill at motor, the out rate started increasing and had 100 psi incr on CTP (FASQ was at motor a little early since no temp sensor on MM earlier and density too close to mud wt) with the bit at 12030' and pulling 5'/min at 2.0/0.4. After calculated 2 bbls out of bit, reduced pump rate to 1.6 when returns were up to 0.8 bpm. Incr pulling speed from Printed: 12/19/2007 10:29:50 AM • BP EXPLORATION Page 22 of 30 Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Spud Date: 6/28/1988 Event Name: REENTER+COMPLETE Start: 9/24/2006 End: Contractor Name: Rig Release: Rig Name: Rig Number: Date I From - To (Hotars ( Task I Code ( NPT (Phase I Description of Operations 10/25/2006 16:50 - 17:10 17:10 - 17:30 17:30 - 19:30 19:30 - 20:30 20:30 - 22:30 22:30 - 00:00 10/26/2006 00:00 - 00:20 00:20 - 03:30 03:30 - 05:00 05:00 - 06:00 06:00 - 11:30 0.33 LCR P PROD1 5'/min to 30'/min at 12000' w/ circ rate at 1.65 bpm and 2-3 bbls above bit. With 10 bbls left gradually closed choke as return came up to 1.2 bpm. Used max 300 psi whp w/ 4 bbls left in CT. Then, slowly bled off whp to zero by WCTOFAS at 11450'. Put 8 bbls into formation, left the rest in the hole. Continue wiper OOH 45'/min at 1.63/1.25 0.33 DRILL P PROD1 Wiper thru open hole was clean until pulled tite at 54k at 11200'. Had to increase rate and backream OOH 2.05/1.75/2900 2.00 DRILL P PROD1 POOH for next step, circ. 1.9 bpm with 1.5 bpm returns. Slight loss of fluid to formation. 1.00 DRILL P PROD1 Lay out drilling BHA. Got orders to lay in 10 bbl cement plug for open hole sidetrack at 11,000'. 2.00 DRILL X WAIT PROD1 SWS cementers not available until 0200 hrs. 1.50 DRILL C PROD1 Make up cementing BHA with SWS CTC, 3 jts, 2-1/16 PH6 and 3.17" big hole nozzle. OAL = 93.59'. Capped end of E-Line with shrink wrap. 0.33 DRILL C PROD1 M/U Cementing BHA with CTC, 3 jts PH6 and big hole nozzle. OAL = 93.59'. 3.17 DRILL C PROD1 RIH with cementing BHA. Circ at 0.5 bpm, 0.9 bpm returns RIH to 10,300', Up wt = 35K, RIH thru window clean. Pull up thru window clean as a check. RIH and sat down wt in shale at 10582'. Increase pump to 2 bpm, sat down at 10582'. Pick up wtih overpull at 10564'. Circ 2.5 bpm with 0.9 bpm returns. Up wt = 35K, pull up to 55K, 60K, and 62K at 10560'. Stop pump and work coil up/down at 10564'. Very small shale on log at 10564'. Circ. at 1 bpm. 1.50 DRILL X STUC PROD1 Pull 65K at 10560', pump 1 bpm with 0.4 bpm returns. Free going in hole. Pull up into ledge each time at 10564'. Pull up to 66K with no change. Coil goes in hole clean each time. Incl = 94 deg at this depth. Bullhead down backside of coil to move fluid past BHA. Pump 1.3 bpm, 900 psi WHP, 300 psi coil press. Pull 64K, 70K, 74K and 80K. Coil is free from 10600-10564'. Very sharp overpull, like pulling into ledge. Clean RIH each time. Line up to circ 20 bbls crude down coil. Free up wt = 38K, Overpull starts at 10565'. Pull to 10556' at 75K up wt. 9' of strech. Pump 20 bbls of crude, 2.1 bpm, .6 bpm returns. Spot 15 bbls crude out nozzle. Work coil to 75K while pumping. Stop pump. Coil stuck. Let crude soak 20 min. 1.00 DRILL X STUC PROD1 Work coil, pop free RIH. Pull up hole 10'. Now working coil from 10535-10565'. Pull 80K and RIH to 36K. Now stuck at 10540'. RIH to 10559', Moving up hole each time. Pull to 10530'. Bullhead down backside to free coil. Well is tight. No infectivity, 1000 psi WHP, slow leakoff. Coil is stuck at 10542'. WHP bled down to 400 psi in 10 min. 5.50 DRILL X STUC PROD1 Pump 0.4 bpm down backside at 1400 psi. Try to work coil downhole. No luck. Open choke and circ down coil 2.2 bpm, 0.3 bpm returns. Pull 80K at 10,530'. RIH to -8K at 10556'. Printed: 12/19/2007 10:29:50 AM •~ BP EXPLORATION Operations Summary Report Page 23 of 30 Legal Well Name: Z-01 Common Well Name: Z-01 Spud Date: 6/28/1988 Event Name: REENTER+COMPLETE Start: 9/24/2006 End: Contractor Name: Rig Release: Rig Name: Rig Number: Date` From - To Hours Task Code NPT Phase Description of Operations 10/26/2006 06:00 - 11:30 5.50 DRILL X STUC PROD1 11:30 - 13:00 1.50 DRILL X STUC PROD1 13:00 - 19:00 6.00 DRILL X STUC PROD1 19:00 - 20:30 1.50 DRILL X STUC PROD1 20:30 - 22:00 1.50 DRILL X STUC PROD1 22:00 - 22:30 0.50 FISH X STUC PROD1 22:30 - 00:00 1.50 FISH X STUC PROD1 10/27/2006 00:00 - 01:00 1.00 FISH X STUC PROD1 01:00 - 08:00 7.00 FISH X STUC PROD1 08:00 - 10:00 2.00 FISH X STUC PROD1 10:00 - 12:00 2.00 FISH X STUC PROD1 Park coil at 10544' at free point at 34K. Pump down backside again, pump 1.7 bpm with 1500 psi whp. Work pipe up/down near neutral weight. Pull slow while bullheading to wash backside. Mix and pump 30 bbls MI SAP pill consisting of 6.6 ppb SAP, 6.6 ppb Tannathin w/ a pH of 10.5 mixed in rig water w/ a pill density of 8.7 ppg at 2.75/0.6/2420 and displace w/ 9.6 ppg Flo Pro. Stack max wt down after pill out nozzle. Recip 80k to -10k while get 6.5 bbls of 30 bbls in the annulus. Let soak for 20 min at neutral wt Work CT to 90k max and -12k min occasionally for 1.5 hrs w/ no progress. Try pumping down the BS at 1.5 bpm while down the CT at 0.4 bpm at 1150 psi whp and pulling 90k w/ no movement. Try other tricks like dumping pressure, etc. Meanwhile, SWS gather tools for cut and recover ops Pump 20 bbl crude down coil. Hold 90K up wt. Work pipe up/down with crude in coil. Pump 2 bpm, 0.4 bpm returns. Clean chains on injecter head. Pump down backside at 2.7 bpm at 2700 psi, work pipe up/down. No luck. Spot crude on backside and let soak. Work pipe. 90K/-8K. Nozzle at 10,545'. Pump down coil at 1.8 bpm, work pipe. No luck. Pump down backside at max rate. Work pipe. Press up backside to 2500 psi at 3 bpm, stop pump, pull max and surge backside. No luck. Repeat, no luck. Start Coil cutting procedure. SAFETY MEETING. Review procedure, hazards and mitigation for cutting coil for chemical cut. Well is dead. Pull coil to 45K, 5K over neutral wt. Close upper pipe/slip rams. Slack to zero and pull to 50K. Slips holding. Closed manual lock down on rams. Strip injecter head up 8 ft. Rig up Hot tap and drill hole in coil. Coil was dead. Cut coil 6' above rig floor. Pull stub 4' above cut point to expose E-Line. Make up E-Line clamp and back-up. Pull test. Cut E-Line and stand back injecter head. Pull E-Line up using rig hydraulic tuggers and cable clamps. E-Line was free. Weight of E-Line at start was 1,500#. Pull all of E-Line out of coil filling displacement w/ water. Call out SWS E-Line unit for 0600 hrs. to run chemical cutter to cut coil Dress CT stub. Install BTT slip-type connector w/ o-rings. Remove blocks from injector and install long balls. PT at 20k. Run in set screws and PT @ 40k. Install XO's on top of CTC to get to 2" FMC block valve. MU 2" block valve + Y + 3-1 /2 Bowen thread union Fill from BS at avg 5 bph w/ 9.6# mud SWS a-line arrive. Spot unit. Discuss job. Find out that a 1-11/16" (1.6875") chemical cutter is the smallest OD for 2-3/8" Printed: 12/19/2007 10:29:50 AM BP EXPLORATION Page 24 of 30 ~ Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Spud Date: 6/28/1988 Event Name: REENTER+COMPLETE Start: 9/24/2006 End: Contractor Name: Rig Release: Rig Name: Rig Number: Date From - To Hours Task I Code NPT Phase Description of Operations 10/27/2006 10:00 - 12:00 2.00 FISH 12:00 - 14:00 2.00 FISH 14:00 - 14:20 0.33 FISH 14:20 - 15:50 1.50 FISH 15:50 - 17:50 2.00 FISH 17:50 - 18:15 0.42 FISH 18:15 - 20:30 2.25 FISH 20:30 - 21:30 I 1.001 FISH 21:30 - 00:00 I 2.501 FISH 110/28/2006 100:00 - 02:30 I 2.501 FISH 02:30 - 05:30 I 3.00 05:30 - 07:30 I 2.001 RE 07:30 -12:00 I 4.50 12:00 - 12:20 0.33 12:20 - 13:35 1.25 13:35 - 14:50 1.25 X STUC PROD1 CT (1.995" ID) that will guarantee a cut. The BTT connector is 1.5" ID Cutoff BTT CTC and install SWS slip-type connector x EUE 8rd which has a 1.96" ID and PT @ 40k. Install XO's and hardware as before to same Bowen union. Drift assy w/ 1-11/16" dummy X STUC PROD1 WO SWS to obtain another packoff to fit our Bowen connection. We have older style X STUC PROD1 Safety mtg re: RU cutter X STUC PROD1 RU SWS chemical cutter and packoff assy on the ground. Raise to floor and stab thru Bowen union X STUC PROD1 RIH w/ chemical cutter at 100'/min and clean to tag at 10450' ELMD. PUH 5' and park X STUC PROD1 Wait for wellbore fluids to stabilize while crews changeout X STUC PROD1 Cut coil with chemical cutter, 5' off bottom, 10,350' E-Line depth, which is the same as coiled tubing depth. Good indication of cut coil. POH with cutter. X STUC PROD1 Safety meeting. Review procedure, hazards and mitigation for recovering chemical cutter. Recover chemical cutter BHA. Rig back SWS. Pull on coil with blocks, pulled with steady up wt of 40K. Coil is cut and free. Rig down SWS unit. X STUC PROD1 Cut off 20' of coil to expose 20' of E-Line. Dress both ends of coil for weld on connecter. Thread E-Line into CTC. Welded on CTC. Paint CTC area. Pull test CTC. Pull CTC into injecter chains. Secure rig floor. Stab injecter. Pull CTC onto reel. Check weld on CTC. Fill well across the top while POH with coil. Checked welded CTC once it was on reel. Connection looks good. POH with coil. X STUC PROD1 POH with cut coil. Fill well across the top. Stop at 300'. Pick up injecter. Watch for stub of coil while POH. 'C PROD1 M/U CTC. Pull test CTC with 30K. Press test coil weld on connecter and coil with 3500 psi. Call out SWS cementers, ask for 20 bbl pumpable. M/U cementing stinger and big hole cementing nozzle for cement job. 'C PROD1 RIH with cementing BHA circ 0.3/860 getting one half of normal returns. Corr -8' at 10308'. RIH to 10315' while keeping weld on reel, deep enough. Infectivity/circ test 2.52/1.43/2340 "C PROD1 WO cementers while circ occasionally at min down CT 0.2/0/450 at 10270' and fill BS every hour 'C PROD1 Safety mtg re: RU and pump cement C PROD1 RU SWS cementers. Load water and mix cement fC PROD1 SWS pump 5 BW. PT 4000. SWS load CT w/ 24 bbls 15.8# G cement w/ 76 ml FL @ 3:51 TT @ 1.63/1630. Displace cement w/ 38 bbls biozan. RIH from 10000' to 10315' and park. After getting 3 bbls cement past nozzle and with -1bbl returned, SI @ choke and bullhead to openhole at 1.3/238 and watch WHP slowly build to 350 psi and stabliize by 6 bbls out nozzle. Red rate to 1.0 bpm and start PUH 44k at 3-5'/min. Bullhead 10 bbls away, then slowly open choke and lay in the rest to Printed: 12/19/2007 10:29:50 AM BP EXPLORATION Page 25 of 30 Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Spud Date: 6/28/1988 Event Name: REENTER+COMPLETE Start: 9/24/2006 End: Contractor Name: Rig Release: Rig Name: Rig Number: Date From - To Hours Task .Code NPT :Phase Description of Operations 10/28/2006 13:35 - 14:50 1.25 REMCM C PROD1 WCTOC at 10125'. POOH to safety circ 0.7/400 w/ nearly full 14:50 - 16:20 I 1.501 RE 16:20 - 19:00 I 2.67 19:00 - 21:00 I 2.00 21:00 - 21:30 I 0.50 21:30 - 22:15 0.75 22:15 - 23:20 1.08 23:20 - 01:00 I 1.67 10/29/2006 00:00 - 00:30 I 0.501 REMCM~C 00:30 - 02:00 1.50 REMCM C 02:00 - 06:00 4.00 DRILL C 06:00 - 08:45 ~ 2.75 ~ DRILL ~ C 08:45 - 09:00 I 0.251 DRILL I C 09:00 - 14:00 I 5.001 DRILL I C returns PROD1 Park at 9800', SD pump, WOC After 30 min fill hole from BS w/ 0.2 bbls. Pump down CT at 0.25/600 to move < 1 bbl fluid then SD pump After 30 min, fill hole from BS w/ 0.2 bbls. Pump down CT at 0.6/800 and had no returns after 4 bbls, SD pump After 20 min, start pump 1.5/1830 and took 2 bbls to get partial retums PROD1 RIH while circ down CT at 1.64/1.14/1860 w/ biozan at nozzle. RIH to 10215' at 1.64/1.48/1830, but appears 'out' MM is not correct. Blow it down twice. Getting aired up returns. Jet biozan while RIH to 10315' and then chase up hole w/mud w/ final 2.25/1.91 /2100 (needed shorter TT or higher FL). No cement in returns PROD1 Circ. while waiting for cement /cement test for next batch. circ. at 2.1 bpm with 1.7 bpm returns. Close choke and get infectivity test of 1 bpm, 400 psi whp, 2 bpm, 1150 psi. PROD1 SAFETY MEETING. Review procedure, hazards and mitigation for pumping second cement pill. PROD1 Circ. at 0.5 bpm while cementers getting ready. Press test cement line to 4000 psi with 2 bbls water. PROD1 Stage 15.8 ppg, G Cement. 2.1 bpm, 2300 psi Pump 24.1 bbls cement. Stage 10 bbl water. 1.5 bpm, 1800 psi, Switch to rig pumps. Stage 40 bbl 2# Biozan water. 2.1 bpm, 1100 psi, Close choke at 57 bbls. Cement at nozzle. Squeeze away cement to openhole. 5 bbls cmt out nozzle, 1.2 bpm, 2000 psi SIWHP. 10 bbls cmt out nozzle, 1.2 bpm, 2400 psi SIWHP 15 bbls cmt out nozzle, 0.8 bpm, 2150 psi, open up choke and lay in last 9 bbls of cmt. Lay in cement 1 for 1 in 7" liner. 1 bpm, pull at 27 fpm. Pull to safety at 9400'. WCTOC at 10750'. PROD1 Close choke. Sqz 5 bbl CMT away. 0.5 bpm, 2000 psi. Stop pump. 2100 psi sqz press. Open choke slow. RIH. Dress off cement to 10,310' at 2.5 bpm with Biozan, 2700 psi, full returns. Wash 7" liner up to tailpipe and back down to 10,310'. Account for 1 hr time change-fall back PROD1 Wash 7" liner with Biozan from 10,310' to tailpipe. PROD1 POH while circ at 3.0 bpm. Full retums. PROD1 Pickle coil for re-use. PJSM for pumping N2 down coil. Slowdown reel with N2. Bleed down coil. PROD1 Unstab CT from injector and pull end over pipeshed to reel and secure. RD hardline in reelhouse PROD1 Safety mtg re: reel swap in close proximity to Pad transformers and rig spotted at an angle to normal rig up PROD1 Spot VECO lowboy under reelhouse. Open Bombay door and Printed: 12/19/2007 10:29:50 AM • $P EXPLORATION Page 26 of 30 Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Spud Date: 6/28/1988 Event Name: REENTER+COMPLETE Start: 9/24/2006 End: Contractor Name: Rig Release: Rig Name: Rig Number: Date From - To Hours Task Code NPT Phase Description of Operations 10/29/2006 09:00 - 14:00 5.00 DRILL C PROD1 lower used reel to lowboy and set on trailer at about 70 deg from normal. Move truck forward 10' to close Bombay door. Back out trailer and drive to other side of Pad. Remove reel and set on ground w/ Peak 140T crane. Pick new a-CT reel and set onto trailer chocks in same position as previous. Pick old reel and put on empty trailer. Install new reel in reverse order as above. RD 140T crane, trucks and release 14:00 - 19:00 5.00 DRILL C PROD1 Prep reel. Install hardline and hook up a-line connectors. Reel has 526k RF 19:00 - 22:00 3.00 DRILL C PROD1 M/U internal coil grapple and pull test. Held PJSM. Pulled coil to injecter head. Cut coil. Meg test E-Line. Good test. 51.2 Ohms 22:00 - 00:00 2.00 DRILL C PROD1 Circ. coil full of FloPro at 1.2 bpm. Perform E-Line slack management. Reverse pump at 3.4 bpm at 4200 psi. 10/30/2006 00:00 - 01:00 1.00 DRILL C PROD1 Reverse circ at 3.4 bpm, 4200 psi. Cut coil and found E-Line at 32 ft. 01:00 - 03:00 2.00 DRILL C PROD1 M/U SWS CTC. Pull test with 35K. M/U BHI E-Line connecter. Pressure test with 3500 psi. 03:00 - 04:00 1.00 DRILL C PROD1 M/U 3.78" BHI cement milling BHA with mill, string reamer and straight extreme motor. OAL = 54.05'. 04:00 - 06:30 2.50 DRILL C PROD1 RIH with BHA # 25. Circ. at 0.5 bpm while RIH. 06:30 - 06:50 0.33 DRILL C PROD1 Log tie-in down from 10270', corr -4.5' 06:50 - 06:55 0.08 DRILL C PROD1 Wiper in hole to tag at 10338' 06:55 - 08:30 1.58 DRILL C PROD1 Drill cement from 10338' 2.45/3450 w/ full returns at <20'/hr to 10365' 08:30 - 09:30 1.00 DRILL C PROD1 Backream and ream window area until clean. Had some MW at TOC at 10338' and TOW at 10345' initially. Dry pass both directions was clean 09:30 - 11:30 2.00 DRILL C PROD1 Open EDC. POOH circ 2.57/2800 11:30 - 12:00 0.50 DRILL C PROD1 LD milling BHA 12:00 - 12:40 0.67 DRILL C PROD1 MU drilling BHA 12:40 - 14:20 1.67 DRILL X PROD1 BHI have tool problems (bad test cable, EDC prob, change flow sub, etc) 14:20 - 15:10 0.83 DRILL P PROD1 MU BHA 15:10 - 17:00 1.83 DRILL C PROD1 RIH w/ BHA #26 (3.8 deg motor w/ HCC bi bit) 17:00 - 17:30 0.50 DRILL C PROD1 Log tie-in down from 10260', corr -4.5' 17:30 - 17:40 0.17 DRILL C PROD1 RIH thru cement and window, clean. PU 41.5k and start motor at wt loss at 10364'. Ease in hole 17:40 - 19:50 2.17 DRILL C PROD1 Begin drilling build at 10366' 2.44/3300/98. Drilled at 408 TF, 2.5 / 2.5 bpm, 40 fph, 4K WOB. Drilled to 10410'. 19:50 - 21:50 2.00 DRILL C PROD1 Drilled build section, 2.5 / 2.5 bpm, 40 fph, 608 TF, Drilled to 10432'. Orient TF to 908 and drilled to 10,472'. 21:50 - 22:10 0.33 DRILL C PROD1 Wiper trip to window. Clean hole. RIH clean. 22:10 - 00:00 1.83 DRILL C PROD1 Drill build / turn section, 2.5 / 2.5 bpm, 808 TF, 3200-3800 psi, 35 fph ROP. Swap to new FloPro at 10,500'. Drilled to end of turn section at 10,525'. 10/31/2006 00:00 - 03:00 3.00 DRILL C PROD1 POH with build BHA. Open EDC below tuing tailpipe. POH. New FloPro to surface. 03:00 - 04:50 1.83 DRILL C PROD1 C/O motor and bit #15. Bit had 3 plugged ports from motor rubber. Bit graded at [1,4,1]. Printed: 12/19/2007 10:29:50 AM ~P EXPLORATION Page 27 of 30 Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Spud Date: 6/28/1988 Event Name: REENTER+COMPLETE Start: 9/24/2006 End: Contractor Name: Rig Release: Rig Name: Rig Number: Date From - To Hours Task Code NPT Phase Description of Operations 10/31/2006 03:00 - 04:50 1.83 DRILL C PROD1 Service BHI tools and add RES tool. Adjust new motor to 1.0 04:50 - 06:40 1.83 DRILL C PROD1 06:40 - 07:00 0.33 DRILL C PROD1 07:00 - 07:20 0.33 DRILL C PROD1 07:20 - 08:25 1.08 DRILL C PROD1 08:25 - 11:00 I 2.581 DRILL I C I I PROD1 11:00 - 16:30 I 5.501 DRILL IX ISFAL IPROD1 16:30 - 17:45 1.25 DRILL X 17:45 - 21:20 3.58 DRILL C 21:20 - 23:10 I 1.831 DRILL I C 23:10 - 00:00 0.83 DRILL C ',11/1/2006 00:00 - 00:10 0.17 DRILL C 00:10 - 04:25 4.25 DRILL C 04:25 - 04:30 0.08 DRILL C 04:30 - 06:40 2.17 DRILL C 06:40 - 08:00 I 1.331 DRILL I C 08:00 - 11:00 I 3.00 I DRILL I C 11:00 - 11:15 0.25 DRILL C 11:15 - 14:45 3.50 DRILL C 14:45 - 14:55 0.17 DRILL C 14:55 - 18:10 3.25 DRILL C PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 deg bend. M/U Bit #16, HCC BC re-build bit. OAL = 78.9'. RIH with Lateral RES BHA #27. Circ. at 0.4 bpm. Log tie-in down from 10270', Corr -6' RIH thru window, clean. Wiper to TD 2.0/3050/DTF at 15'/min was clean to tag at 10526' Backream at 2.5/3300/DTF to window, clean Log MAD pass down to tie-in resistivity 0.7/1670/DTF at 150'/hr w/ good slide (25k) thru build Drill from 10526' to 10, 640 ft 2.47/3450/58 w/ NB at 75-83 deg to 10612' where BHI had PC problems Swapped to left side at 10575' Work on BHI PC (surface software?) issues while perform slow wipers between 10500-600'. Can't see TF. Wiper to window and pull thru clean. Park in 7" and circ 0.3/1100 while work to fix problem Wiper back to 10590' was clean. MAD pass to TD at 10,613 ft Drilling Lateral w/ 1 deg motor TF at 120E O = 2.56 / 2.59 bpm at 3430 / 3850 psi WOB = 1-2k ROP = 35 fph Vol pits= 308 bbl's Drilling Lateral w/ 1 deg motor TF at 100E from 10,740 ft O = 2.56 / 2.59 bpm at 3430 / 3850 psi WOB = 1-2k ROP = 35 fph Vol pits= 308 bbl's Mini wiper trip due to stacking Finished wiper trip and tagged TD at 10,789 ft MD Drilling Lateral w/ 1 deg motor. TF at 90-100L from 10,789 ft to 10,890 ft O = 2.62 / 2.63 bpm at 3430 / 3850 psi WOB = 0.5-2k ROP = 30-45 fph Vp= 312 bbl's Mini wiper trip to help in sliding Drilling Lateral w/ 1 deg motor. TF at 90-100L from 10,890 ft O = 2.62 / 2.63 bpm at 3430 / 3800 psi WOB = 0.5-2k ROP = 13-45 fph Vp= 313 bbl's Wiper trip to window. Log tie-in +2.5' RIH tagged with mw at 10610'. PU run thru smooth Continue drilling in 41 N shale WOB 2-3k ROP = 12-15'hr Wiper trip back to 10880'. No problems. Drill ahead f/ 10995' NB inc 81deg dropping angle O = 2.47 / 2.49bpm at 3450psi 2-400psi MW WOB = 3-3.5k ROP +30'/hr Vp = 307bb1s Drilled okay until 11025' then hit suspected shale on top of 41 P. Very slow drilling initially. Gradual increase in ROP to 15'/hr. Short 100' wiper trip. Drill ahead f/ 11072' Printetl: 12/19/2007 10:29:50 AM BP EXPLORATION Page 28 of 30 Qperations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Spud Date: 6/28/1988 Event Name: REENTER+COMPLETE Start: 9/24/2006 End: Contractor Name: Rig Release: Rig Name: Rig Number: Date (From - To I Hours, Task I Code I NPT I Phase I Description of Operations 11/1/2006 14:55 - 18:10 3.25 DRILL C PROD1 18:10 - 21:30 3.33 DRILL C PROD1 21:30 - 22:00 0.50 DRILL C PROD1 22:00 - 22:45 0.75 BOPSU C PROD1 22:45 - 23:00 0.25 DRILL C PROD1 23:00 - 00:00 1.00 DRILL C PROD1 11/2/2006 00:00 - 01:00 1.00 DRILL C PROD1 01:00 - 02:35 1.58 DRILL C PROD1 02:35 - 04:35 2.00 DRILL C PROD1 04:35 - 05:00 0.42 DRILL C PROD1 05:00 - 06:00 1.00 DRILL C PROD1 06:00 - 15:50 9.83 DRILL C PROD1 15:50 - 20:15 4.42 DRILL C PROD1 20:15 - 21:45 1.50 DRILL C PROD1 21:45 - 00:00 2.25 DRILL C PROD1 Qf = 2.60 / 2.62 3550psi WOB = 2-3k ROP = 15'/hr Vp = 300bb1s BU sample from 11077' not showing any conglomerate yet ROP picking up to 15-20'/hr from Held Spill, confined space and pin hole leak in CT table talks meeting today POOH. At 10,335 ft. open EDC and inc Op to 3 bpm. SD pump and flow checked at 300 ft. PUH inspecting CT in 13Cr enviroment after 4 trips Held PJSM and LD BHA. Bit at 2-2 Function test BOP's. After reviewing bit selection with Geologist and emails concering the bit issue drilling in Zone III, PU DS 49 as per Geologist reccommendation with new motor. CT Management. Cut 100 ft 2-3/8" CT. Rehead CTC Installed CTC and cir CT while making ready to re-head Re-heading to UOC. Pull tested CTC to 35k and PT to 3500 psi. RU UOC to BHA RIH to 284 ft and open EDC, RIH Tie-in starting at 10, 255 ft. Corrected - 5 ft, closed EDC and oriented TF to HS RIH and took wt at 10,820 ft, TF 180 deg out, PUH and orient TF. Having trouble getting in the hole with this PDC bit. Reduced Qp. Worked through. RIH. Set down at 10,955 ft, PU and worked through to 10988 ft, set down again. Work way to bottom. Tagged bottom at 11,102 ft Drilling lateral section at TF 90R O = 2.62 / 2.63 bpm at 3430 / 3800 psi WOB = 0.5-2k ROP = 20-30 fph Vp= 294 bbl's Vp= @ 1045hrs 286bb1s Pit drill at 1050hrs 15bb1 gain: Nordic alarm caught immediately by Nordic driller. SLB heard Nordic alarm and visually seen on SLB monitor but with no reaction. SLB has all audible alarms off. Relies on visual only. Nordic driller instructed not to communicate with SLB for this test. Talked with SLB driller about importance of communication with others if a pit gain is seen. Investigating what the problem is with no audible alarm on SLB system. Dilled fair 15'/hr to 11239'. Normal ocassionial stalls. Very little drill off now with 3-4k WOB the ROP <5'/hr for last 1/2hr. TOH 45k PU off bottom. Tight between 11040' and 10950'. Worked area f/ 11040'-11030' several times before pulling through at 50k. Motor seemed to stall in this area at 4150psi. Continue TOH with as drilled TF's. Tight at 10808' Pullled above WS. Pulled heavy up to TT. Open EDC and surged 7" POOH LD BHA and change out motor and bit. Scribed TF HS. Pulled Mouse hole in leui of conducting THA on picking up liner while drilling. RU winches to off driller side of rig floor RIH. Held THA concerning PU liner while drilling. Crew working on equipment list and procedures. Printed: 12/19/2007 10:29:50 AM . ~ • BP EXPLORATION ~perations'Slurnmary Report Page 29 of 30 ~ Legal Well Name: Z-01 Common Well Name: Z-01 Spud Date: 6/28/1988 Event Name: REENTER+COMPLETE Start: 9/24/2006 End: Contractor Name: Rig Release: Rig Name: Rig Number: Date From - To Hours Task Code NPT Phase Description of Operations 11/3/2006 00:00 - 00:20 0.33 DRILL C PROD1 RIH to 10, 255 ft 00:20 - 00:45 0.42 DRILL C PROD1 Tied in and corrected -8 ft, closed EDC and oriented TF to HS. 00:45 - 02:00 1.25 DRILL X DPRB PROD1 02:00 - 03:00 1.00 DRILL X DPRB PROD1 03:00 - 04:00 1.00 DRILL X SFAL PROD1 04:00 - 05:15 1.25 DRILL X DPRB PROD1 05:15 - 06:00 0.75 DRILL X DPRB PROD1 06:00 - 08:30 2.50 DRILL X DPRB PROD1 08:30 - 09:00 0.50 DRILL X DPRB PROD1 09:00 - 14:30 5.50 DRILL X DPRB PROD1 14:30 - 15:00 0.50 DRILL X DPRB PROD1 15:00 - 19:00 4.00 REMCM X DPRB PROD1 19:00 - 19:15 0.25 REMCM X DPRB PROD1 19:15 - 20:30 1.25 REMCM X DPRB PROD1 20:30 - 22:30 2.00 REMCM X DPRB PROD1 22:30 - 00:00 1.50 REMCM X DPRB PROD1 11/4/2006 00:00 - 00:30 0.50 REMCM X DPRB PROD1 00:30 - 01:00 0.50 REMCM X DPRB PROD1 RIH and at 10,370 ft inc Op to 2.5 bpm and RIH. Tagged at 10,397 ft Working at getting past the obstruction at 10,397 ft. Tried several TF from HS to 50R and was tagging hard at 10,397 ft. Called town and conversed with engineer on way forward. Recovered large pieces and well rounded shale from across shaker. RIH, set TF at 45R, reamed out hole as per drilled TF. Reamed from 10,397 to ft 10,403 ft and bit fell into old hole. Inc Op to 2.6 bpm and RIH at 20 fpm. Tagged at 10,850 ft and stopped at 10,960 ft: Unable to pass 10,960 ft. PUH and pulled 70k at 10,960 ft, 10,790 ft and 60 k at 10,580 ft. Pulled above WS and repaired the SLB PLC recording data. Lost circulating pressure and hydraulic % pilot Open EDC and work CT and circ at 3.00 bpm and clean up wellbore. Wait on SLB Elec Tech. Circulate and work on hydraulic control %pilot and circulating pressures on the CTDS display. Computer locked up while working on hydraulic Tie-in to marker at 10,280 ftCorrected -9 ft. SD pump and closed EDC RIH and tagged again at 10,397 ft, Unable to pass after reaming it out earlier. PUH above WS, open EDC and circulated wellbore clean. Called town engineer and talked about way forward. POOH LD BHA Wait on orders Decision made to P/A well based on very low success probability to cleanout well and then run production liner due to unstable shale sections and other hole problems at 10397' which is directly below window. Remove BHI UOC. Dress end of a-line. Wait on tools. (10jts 2-1/6" tbg etc.) Arrange for seawater, cement etc.. Held PJSM and discussed ops steps and hazards associated with said task PU BHA, stab Injector. RIH with cement nozzle to PA. Stopped at 1400 ft and changed out stripper Stripper totally failed and engerier at CT. Corrected - 8 ft at 10, 250 ft. PU wt at 10,340 ft = 42 k Displace wellbore to 8.5 ppg 100 deg F SW. Circulated 165 bbl SW. and turned fluid to pits. Finish cleaning pits Finish displacing wellbore and cleaning pits. Cir through choke in preparation of infective test. Infective test: Pressured up to 1500 psi and SD. WHP remained contants at 1450 psi. Pressured up to 1,750. psi. 0.6 psi gradient 200 psi in 5 min Pressured up to 2,000 psi 0.67 psi/ft gradient. 1300 psi in 9 min Pressured up again to a WHP 2,500 psi 7.2 psi/ft Broke down 2,500 psi to 1,950 psi WHP. Injecting. into formation at a WHP Printed: 12/19/2007 10:29:50 AM BP EXPLORATION Page 30 of 30 .Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Spud Date: 6/28/1988 Event Name: REENTER+COMPLETE Start: 9/24/2006 End: Contractor Name: Rig Release: Rig Name: Rig Number: Date From -'To Hours Task Code NPT Phase Description of Operations 11/4/2006 00:30 - 01:00 0.50 REMCM X DPRB PROD1 of 2,100 psi at 0.60 bpm. (0.68 psi/ft). 01:00 - 01:20 0.33 REMCM X DPRB PROD1 Held PJSM with SLB Cementers and Nordic Crews. 01:20 - 02:40 1.33 REMCM X DPRB PROD1 SD pump and circulate while waiting on Vac trucks and cementers. Mixed up and sheared 30 bbl 2 ppb biozan. Mixing up 20 bbl 15.8 ppg cement. Parked CT at 10,335 ft 02:40 - 04:20 1.67 REMCM X DPRB PROD1 Pumped 3 bbl fresh water, PT to 4300 psi, followed by 2 bbls water Batch mix 5 bbl cement 1 tub. Pumped 21 bbl's 15.8 ppg cement. SD and clean cement line. Pumped 23.5 bbl Biozan water at nzl, SWI and bull headed cement at 0.9 bpm at 1,941 psi WHP into open hole. With 15 bbl pumped, open choke, With 13 bbl pumped, Pp increased rapidly from 1890 psi to 2550 psi. Red Op to 0.5 bpm PUH laying in at 1:1 5 bbl (130 ft) cement. RIH with bio at nozzle at fluid ratio of 1:1 to 10,336 ft. Inc Op from 2 to 3 bpm. PUH with SW at nzl. 04:20 - 05:00 0.67 REMCM X PROD1 POOH chasing cement to suface at 3.00 bpm. Circulating at 1:1. RBIH to 10,330 ft to cir in corrosion inhibitor SW. Cement at surface, transfer to cutting box. POOH laying in corrosion inhibitor. 05:00 - 07:30 2.50 REMCM X PROD1 POOH laying in corrosion inhibitor 07:30 - 08:00 0.50 REMCM X PROD1 Remove 200' of a-line from 2-1/8" tbg. 08:00 - 08:45 0.75 REMCM X PROD1 LD 2-1/8" tbg 08:45 - 09:05 0.33 WHSUR X PROD1 Dress end of a-line. PU 2.375" stinger/nozzle. Stab on injector 09:05 - 09:40 0.58 WHSUR X PROD1 RIH to 2500' 09:40 - 10:50 1.17 WHSUR X PROD1 Wait on diesel 10:50 - 12:30 1.67 WHSUR X PROD1 FP well with 40bbls diesel from 2500' to surface. 12:30 - 13:40 1.17 WHSUR X PROD1 With MV closed blowdown reel to Flowback tank with N2. Bleeddown pressures. 13:40 - 16:00 2.33 RIGD P POST LD stinger BHA. Prep end of coil with internal connector and cable to pull back to reel. Same time cleaning out cutting tank, and last of rig pits. Clearing pipe shed of unused tubulars. 16:00 - 17:30 1.50 RIGD P POST Unstab coil from injector and pull back onto reel. Standback and secure injector. 17:30 - 17:50 0.33 RIGD P POST Held PJSM on ND BOP's and all associated hazardsND BOP's 17:50 - 23:00 5.17 RIGD P POST ND BOP's and PT tree cap to 5000 psi. 23:00 - 00:00 1.00 RIGD P POST Warm up hydraulics and tires to move off well RIG RELEASED AT 00:00 (midnight) Printed: 12/19/2007 10:29:50 AM I~ L by BP Alaska s Baker Hughes INTEQ Survey Report LNTE Q ::Company: BP Amoco Date: 11/8/2006 Time: 10:48:20 Page: 1 Field: Prudhoe Bay Co-ordiuate(NE) Reference: Well: Z-01, True North Site: PB Z Pad Vertical (TVD) Refcreuce: 1:01 6/28/1988 00:00 91.7 Well: Z-01 Section (VS) Reterence: Well (O.OON,O.OOE,208.09Azi) Weipwth: Z-01APB3 Sarvey Caknlatron Method: Minimum Curvature Db: Orade Field: Prudhoe Bay North Slope UNITED STATES Map System:US State Plane Coordinate System 1927 Map 2Ane: Alaska, Zone 4 Goo Datum: NAD27 (Clarke 1866) Coordinate System: Well Centre Sys Datam: Mean Sea Level Geomagnetic Model: bggm2006 Site: PB Z Pad TR-11-12 UNITED STATES :North Slope Site Position: Northing: 5957230.17 ft Latkade: 70 17 33.051 N From: Map Easting: 601304.82 ft LongNnde: 149 10 47.365 W Position Uncertainty: 0.00 ft North Reference: True Gronml Level: 0.00 ft Grid Coavergeece: 0.77 deg Weil: Z-01 Slat Name: 01 Z-01 Weli Positron: +N/-S 1897.93 ft Northing: 5959100.02 ft Latitude: 70 17 51.714 N +E/-W -2058.52 ft Fasting : 599221.09 ft Longit®de: 149 11 47.371 W P091trofl iJneert8lnty: 0.0~ ft Weltpath: Z-01APB3 Drilled From: Z-01APB1 Tie-oa Depth: 10300.00 tt Cnrrent Datum: 1:01 6/28/1988 00:00 Height 91.70 ft Above System Datum: Mean Sea Level Magnetrc Data: 10/31 /2006 Declination: 23.93 deg Field Strength: 57630 oT Mag Dip Angle: 80.87 deg Vertical Section: Depth From (TVD) +N/-S +E/-W Direction ft ft ft deg 37.70 0.00 0.00 208.09 Sarvey Program for Definitive Wellpath Date: 10/28/2006 Validated: Yes Version: 4 Actual From To Sarvey Toolcode Tool Name ft ft 100.00 10300.00 1 : Schlumberger GCT muftishot GCT-MS Schlumberger GCT multishot 10343.00 11240.00 MWD (10343.00-11240.00) MWD MWD -Standard Annotation MD TVD it _ ft 10300.00 8738.53 TIP 10343.00 8772.19 KOP 11240.00 9012.55 TD Sarvey: MWD Start Date: 10/31/2006 Company: Baker Hughes INTEQ Engineer: Tool: MWD;MWD -Standard Tied-to: From: Definitive Path Sarvey MD Iacl Azim TVD SysTVD N/S ENY ' MapN MapE VS DLS Tool ft ". deg < deg ft ft ft ft tt ft ft deg/100ft 10300.00 38.58 226.37 8738.53 8646.83 -4117.71 -1300.77 5954965.86 597974.91 4245.19 0.00 MWD 10343.00 38.39 226.55 8772.19 8680.49 -4136.14 -1320.17 5954947.17 597955.76 4270.58 0.51 MWD 10373.04 44.05 232.13 8794.78 8703.08 -4148.98 -1335.20 5954934.14 597940.90 4288.99 22.45 MUVD 10410.40 59.21 237.13 8817.92 8726.22 -4165.77 -1359.08 5954917.04 597917.25 4315.04 41.89 MWD 10439.25 66.14 252.65 8831.22 8739.52 -4176.50 -1382.22 5954906.01 597894.25 4335.40. 53.42 MVW 10469.49 70.19 267.48 8842.52 8750.82 -4181.27 -1409.77 5954900.87 597866.77 4352.58 47.42 MWD 10520.05 74.33 293.79 8858.17 8766.47 -4172.35 -1456.57 5954909.17 597819.86 4366.75 50.18 MWD 10552.69 78.41 294.38 8865.86 8774.16 -4159.41 -1485.52 5954921.73 597790.74 4368.96 12.62 MWD 10587.96 83.59 293.55 8871.37 8779.67 -4145.26 -1517.35 5954935.45 597758.73 4371.47 14.87 MWD 10626.25 82.13 290.60 8876.13 8784.43 -4130.99 -1552.55 5954949.26 597723.35 4375.44 8.54 MWD 10660.00 82.67 286.67 8880.60 8788.90 -4120.30 -1584.24 5954959.53 597691.52 4380.94 14.65 MWD • by BP Alaska ~ Baker Hughes INTEQ Survey Report INTE Q Company: BP Amoco Date: 11/8/2006 Tim e: 10:48:20 Page: 2 Field: Prudhoe Bay Caerdinate(NE) Reference: Well: Z-01, True North Site: PB Z Pad Vert~af (TVD) Reference: 1:01 6/28/1988 00:00 91.7 Wdl: Z-01 Section (VSO Reference: Well (O.OON,O.OOE,208.09Azi) Wel~ath: Z-01APB3 3awey Cakalatiea Mcthai: Minimum Curvature Db: Orade Sarvey MD Ind Azim TVD Sys TVD ` N/S E/W MapN MapE VS D1S Tool tt deg deg ft ft ft ft ft ft ft de;g/100ft 10691.98 79.66 285.87 8885.51 8793.81 -4111.45 -1614.57 5954967.98 597661.08 4387.41 9.73 MWD 10727.23 78.27 283.18 8892.26 8800.56 -4102.77 -1648.06 5954976.22 597627.48 4395.52 8.46 MWD 10759.13 78.79 280.92 8898.60 8806.90 -4096.24 -1878.63 5954982.34 597596.83 4404.16 7.13 MV1lD 10789.36 78.58 278.27 8904.53 8812.83 -4091.30 -1707.86 5954986.89 597567.54 4413.56 8.62 MWD 10819.70 78.58 274.49 8910.54 8818.84 -4088.00 -1737.41 5954989.80 597537.96 4424.55 12.21 MWD 10853.62 79.65 270.74 8916.95 8825.25 -4086.48 -1770.68 5954990.88 597504.67 4438.88 11.31 MWD 10889.02 78.70 273.12 8923.60 8831.90 -4085.31 -1805.42 5954991.59 597469.92 4454.21 7.13 MWD 10922.37 81.45 277.42 8929.35 8837.65 -4082.29 -1838.12 5954994.18 597437.18 4466.94 15.14 MWD 10960.86 83.54 283.80 8934.38 8842.68 -4075.26 -1875.61 5955000.71 597399.61 4478.39 17.31 MWD 10989.13 79.66 287.05 8938.51 8846.81 -4067.83 -1902.56 5955007.79 597372.57 4484.52 17.82 MWD 11021.54 76.65 291.30 8945.17 8853.47 -4057.42 -1932.51 5955017.80 597342.48 4489.44 15.84 MWD 11053.41 74.03 294.62 8953.24 8861.54 -4045.40 -1960.90 5955029.44 597313.95 4492.20 13.00 MWD 11083.65 73.37 297.87 8961.72 8870.02 -4032.57 -1986.92 5955041.93 597287.75 4493.13 10.54 MWD 11108.92 72.57 301.01 8969.13 8877.43 -4020.70 -2007.96 5955053.52 597266.56 4492.57 12.30 MWD 11142.92 71.55 306.64 8979.61 8887.91 -4002.70 -2034.82 5955071.16 597239.46 4489.34 16.04 MWD 11174.42 69.90 310.40 8990.01 8898.31 -3984.19 -2058.09 5955089.36 597215.96 4483.96 12.42 MWD 11240.00 69.90 310.40 9012.55 8920.85 -3944.28 -2104.99 5955128.65 597168.55 4470.83 0.00 MWD • .~ by BP Alaska s Baker Hughes INTEQ Survey Report INTE Q Company: BP Amoco Date: 11/8/2006 Time: 10:47:37 Page: 1 Fkld: Prudhoe Bay Co-ordieste(I~TE) Reterence: WeIL' Z-01, True North Site: PB Z Pad Vertie9i (1'VD) Reference: 1:01 6/28/1988 00:00 91.7 Weil: Z-01 Section (VS) Reference: Well (O.OON,O.OOE,216.45Azi) Weltpath: Z-01APB2 Survey Csdculatier Method: Minimum Curvature Db: Orade Field: Prudhoe Bay North Sbpe UNITED STATES Map System:US State Ptane Coordinate System 1927 Map Zone: Alaska, Zone 4 Geo Datnm: NAD27 (Clarke 1866) Coordinate System: Well Centre Sys Datnm: Mean Sea Level Geomagnetic Model: hggm2006 Site: PB Z Pad TR-11-12 UNITED STATES :North Slope Site Position: Northing: 5957230.17 ft I.atitnde: 70 17 33.051 N From: Map Eastiug: 601304.82 ft Loogrtnde: 149 10 47.365 W Position Uncertainty: 0.00 ft North Refercoce: True Ground Level: 0.00 ft Grp Convergence: 0.77 deg WeN: Z-01 Slot Name: 01 Z-01 WeN Position: +N/-S 1897.93 ft Northing: 5959100.02 ft I,atitnde: 70 17 51.714 N +E/-W -2058.52 ft Eastiog : 599221.09 ft Longitude: 149 11 47.371 W Position Uncertainty: 0.00 ft Wellpath: Z-01APB2 Drilled From: Z-01APB1 Tie-oe Depth: 10594.78 ft Current Datnm: 1:01 6/28/1988 00:00 Height 91.70 ft Above System Datnm: Mean Sea Level Magnetic Data: 2/5/2006 DecNnation: 24.25 deg Field Strength: 57614 nT Mag Dip Angle: 80.85 deg Vertical Section: Depth From (TVD) +N/-S +E/-W Direction ft ft ft deg 37.70 0.00 0.00 216.45 Survey Program for Definitive Weitpath Date: 10/25/2006 Validated: Yes Version: 5 Actnal From To Snrvey Tookode Tool Name ft ft 100.00 10300.00 1 : Schlumberger GCT multishot GCT-MS Schlumberger GCT muttishot 10343.00 10594.78 MWD (10343.00-11813.00) (1) MWD MWD -Standard 10612.00 12325.00 MWD (10612.00-12325.00) MWD MWD -Standard AnBOtatiOn MD TVD ft ft 10594.78 8825.85 TIP 10612.00 8824.49 KOP 10891.70 8831.35 TD Snrvey: MWD Start Date: 10/25/2006 Company: Baker Hughes INTEQ Engineer: BP Tool: MWD;MWD -Standard Tied-to: From: Definitive Path ! • ~p BP Alaska ~ Baker Hughes INTEQ Survey Report 1NTE Q COmp9ny: BP Amoco Datr. 11/8/2006 Time: 10:47:37 Page: 2 Field: Prudhoe Bay Co-ordiuat~(PiE) Reference: Well: 2-01, True North Site: PB Z Pad Vertical (TVD) Reterence: 1:01 6!2811988 OO:QO 91.7 Well: Z-01 Sectiae (VS) Reference: Web (O.OON,O.OOE,216.45Azi) Wegpath: Z-01AR62 Sarvey Cakslation Method: Minimum Curvature Db: Orade Snrvey MD Ise! Azi® TVD Sys TVD ' N/3 E/W ft deg deg ft ft ft _ tt 10594.78 94.19 246.53 8825.85 8734.15 -4276.44 -1498.87 10612.00 94.90 249.59 8824.49 8732.79 -4282.85 -1514.79 10648.07 86.06 253.69 8824.19 8732.49 -4294.20 -1548.99 10681.48 86.57 257.29 8826.33 8734.63 -4302.55 -1581.26 10714.34 85.80 262.28 8828.52 8736.82 -4308.36 -1613.52 10744.04 85.71 265.43 8830.72 8739.02 -4311.53 -1642.96 10773.64 89.59 270.48 8831.94 8740.24 -4312.59 -1672.50 10803.61 91.37 274.30 8831.68 8739.98 -4311.34 -1702.44 10834.99 92.69 280.57 8830.57 8738.87 -4307.28 -1733.52 10862.61 88.97 282.27 8830.17 8738.47 -4301.82 -1760.58 10891.70 86.39 285.43 8831.35 8739.65 -4294.86 -1788.80 10922.71 84.79 290.60 8833.74 8742.04 -4285.30 -1818.19 10953.60 85.53 297.86 8836.35 8744.65 -4272.68 -1846.24 10994.71 87.07 300.98 8839.00 8747.30 -4252.53 -1881.97 11018.89 89.46 305.03 8839.73 8748.03 -4239.37 -1902.23 11055.28 89.46 310.80 8840.07 8748.37 -4217.02 -1930.92 11095.27 87.45 317.12 8841.15 8749.45 -4189.28 -1959.68 11121.46 86.21 321.03 8842.60 8750.90 -4169.53 -1976.81 11155.41 84.79 326.32 8845.27 8753.57 -4142.27 -1996.85 11186.26 83.31 333.07 8848.47 8756.77 -4115.80 -2012.33 11216.87 81.06 337.25 8852.63 8760.93 -4088.29 -2025.07 11245.37 79.46 343.00 8857.46 8765.76 -4061.89 -2034.62 11276.28 77.95 347.25 8863.51 8771.81 -4032.60 -2042.40 11306.99 76.50 353.19 8870.31 8778.61 -4003.10 -2047.49 11340.60 74.37 357.44 8878.77 8787.07 -3970.69 -2050.15 11371.20 72.63 3.56 8887.46 8795.76 -3941.37 -2049.90 11402.18 70.79 5.27 8897.19 8805.49 -3912.04 -2047.64 11431.90 70.01 1.68 8907.16 8815.46 -38&1.10 -2045.94 11461.50 71.14 356.49 8917.01 8825.31 -3856.20 -2046.39 11490.61 73.95 352.27 8925.74 8834.04 -3828.58 -2049.12 11520.50 75.72 345.19 8933.57 8841.87 -3800.31 -2054.76 11548.93 77.03 344.49 8940.27 8848.57 -3773.64 -2061.98 11579.45 78.42 339.84 8946.76 8855.06 -3745.28 -2071.12 11609.32 78.83 335.42 8952.66 8860.96 -3718.19 -2082.26 11645.35 78.16 329.78 8959.85 8868.15 -3686.86 -2098.50 11673.37 78.49 327.75 8965.52 8873.82 -3663.40 -2112.73 11702.99 82.64 325.60 8970.37 8878.67 -3638.99 -2128.78 11737.57 86.91 323.12 8973.52 8881.82 -3611.02 -2148.84 11765.93 89.03 320.75 8974.53 8882.83 -3588.70 -2168.31 11797.31 91.58 318.39 8974.36 8882.66 -3564.82 -2186.66 11840.54 90.38 325.00 8973.62 8881.92 -3530.92 -2213.43 11875.67 87.28 329.46 8974.34 8882.64 -3501.40 -2232.44 11904.77 88.29 332.83 8975.46 8883.76 -3475.94 -2246.47 11834.01 89.98 337.65 8975.90 8884.20 -3449.40 -2258.71 11969.97 89.52 341.27 8976.06 8884.38 -3415.73 -2271.32 12011.03 88.90 346.15 8976.63 8884.93 -3376.33 -2282.84 12047.48 91.53 350.25 8976.49 8884.79 -3340.66 -2290.29 12078.70 93.58 353.38 8975.10 8883.40 -3309.80 -2294.73 12106.01 94.01 358.12 8973.30 8881.60 -3282.63 -2296.75 12139.51 90.20 3.95 8972.07 8880.37 -3249.18 -2296.14 12175.81 88.47 9.43 8972.49 8880.79 -3213.14 -2291.92 12205.80 88.63 13.59 8973.25 8881.55 -3183.77 -2285.93 12242.00 84.96 13.33 8975.27 8883.57 -3148.63 -2277.52 Maple MapE tt ft 5954804.54 597778.94 5954797.92 597763.10 5954786.13 597729.07 5954777.35 597696.91 5954771.11 597664.74 5954767.55 597635.34 5954766.11 597605.82 5954766.96 597575.87 5954770.61 597544.74 5954775.72 597517.61 5954782.30 597489.31 5954791.47 597459.79 5954803.72 597431.58 5954823.39 597395.60 5954836.29 597375.16 5954858.25 597346.18 5954885.60 597317.06 5954905.13 597299.67 5954932.11 597279.27 5954958.38 597263.45 5954985.71 597250.35 5955011.99 597240.46 5955041.17 597232.29 5955070.59 597226.81 5955102.96 597223.72 5955132.28 597223.58 5955161.63 597225.46 5955189.59 597226.79 5955217.48 597225.97 5955245.06 597222.88 5955273.25 597216.87 5955299.82 597209.29 5955328.07 597199.78 5955354.99 597188.28 5955386.11 597171.63 5955409.37 597157.10 5955433.56 597140.73 5955461.27 597120.30 5955483.35 597102.54 5955506.96 597081.88 5955540.50 597054.66 5955569.76 597035.27 5955595.04 597020.90 5955621.41 597008.31 5955654.91 596995.26 5955694.44 596983.23 5955729.71 596975.31 5955760.51 596970.46 5955787.64 596968.Q8 5955821.10 596968.25 5955857.18 596972.00 5955886.63 596977.59 5955921.88 596985.53 VS D[S Tool ft deg/100ft 4330.47 0.00 MWD 4345.09 18.19 MWD 4374.53 27.01 MWD 4400.42 10.86 MWD 4424.25 15.33 MWD 4444.30 10.58 MWD 4462.69 21.50 MWD 4479.47 14.06 MWD 4494.67 20.41 MWD 4506.35 14.81 MWD 4517.52 14.02 MWD 4527.29 17.40 MWD 4533.80 23.54 MWD 4538.82 8.45 MWD 4540.27 19.44 MWD 4539.33 15.86 MWD 4534.11 16.58 MWD 4528.40 15.64 MWD 4518.38 16.09 MWD 4506.27 22.28 MWD 4491.71 15.40 MWD 4476.15 20.66 MWD 4457.21 14.34 MWD 4436.50 19.44 MWD 4412.01 13.78 MWD 4388.28 20.00 MWD 4363.35 7.92 MWD 4339.86 11.68 MWD 4317.68 16.97 MWD 4297.08 16.86 MWD 4277.69 23.61 MWD 4260.53 5.19 MWD 4243.13 15.57 MWD 4227.97 14.57 MWD 4212.42 15.45 MWD 4202.00 7.19 MWD 4191.90 15.73 MWD 4181.31 14.26 MWD 4173.75 11.21 MWD 4166.62 11.07 MWD 4155.26 15.54 MWD 4142.80 15.46 MWD 4130.85 12.08 MWD 4116.57 17.47 MW© 4096.99 10.15 MWD 4072.13 11.98 MWD 4047.87 13.36 MWD 4025.68 11.94 MWD 4005.02 17.40 MWD 3977.75 20.78 MWD 3946.26 15.83 MWD 3919.08 13.88 MWD 3885.81 10.16 MWD -~ • by BP Alaska s Baker Hughes INTEQ Survey Report iNTEQ Company: BP Amoco Date: 11/$/2006 Time: 10:47:37 Page: 3 Field: Prudhoe Bay C~-ordinatc(NE) RefereACe: Well: Z-01, True North Site: PB Z Pad Vertical (1'VD}Retereoce: 1:01 6128!1988 00:00 91. 7 Well: Z-01 Sectie.(VS)Refercnce: Well (O.OON,O.OOE,216.45Azi) We0path: Z-01APB2 SorveyCrdcabtinaMet6od: Minimum Curvature Dlr: Orade Survey `MD ILL Azim TVD ' Sys`TVD N/S E/W M~pN MapE VS DIS Tool ft deg deg ft ft ft ft ft ft ft deg/100ft 12266.71 85.19 8.84 8977.40 8885.70 -3124.48 -2272.79 5955946.09 596989.95 3863.57 18.13 MWD 12287.47 86.69 7.60 8978.86 8887.16 -3103.98 -2269.83 5955966.62 596992.64 3845.32 9.36 MWD 12325.00 86.69 7.60 8981.03 8889.33 -3066.84 -2264.88 5956003.82 596997.10 3812.50 0.00 MWD ` • • ~• by BP Alaska S Baker Hughes INTEQ Survey Report INTEQ Company: BP AmoCO Dste: 11/8!2006 Time: 10:29:21 Page: 1 Fief: Prudhoe Bay Co~ordiptelNE)Reference: Wetl: Z-01, True North `Site: PB Z Pad Vertical (TVD) Reference: 1:01 6/28/1988 00:00 91.7 Well: Z-01 Sestlee (VS) Reference: User (O.OON,O.OOE,212.01Azi) Wellpath: Z-01APB7 St,rvcy Calcalat~n Method: Minimum Curvature Db: Orade Field: Prudhoe Bay North Slope UNITED STATES Map System:US State Plane Coordinate System 1927 Map Zone: Alaska, Zone 4 Geo Datum: NAD27 (Clarke 1866) Ceordinate System: WeN Centre Sys Datum: Mean Sea Level Geomagnetic Model: bggm2006 Site: PB Z Pad TR-11-12 UNITED STATES :North Slope Site Pasitton: Northing: 5957230.17 ft Latitnde•. 70 17 33.051 N From: Map Fasting: 601304.82 ft Longitude: 149 10 47.365 W Position Uncertamty: 0.00 ft North Reference: True Gronud Level: 0.00 ft Grid Convergence: 0.77 deg Well: Z-01 Stet Name: 01 Z-01 Well Position: +N/-S 1897.93 ft Northing: 5959100.02 ft Latitude: 70 17 51.714 N +E/-W -2058.52 ft Fasting : 599221.09 ft Longitude: 149 11 47.371 W Position Uncertainty: 0.00 ft Wefipath: Z-01APB1 Drilled From: Z-01 Tie-ou Depth: 10300.00 ft Current Datum: 1:01 6/28/1988 00:00 Height 91.70 ft Above System Datum: Mean Sea Level Magnetic Data: 1/17/2006 Declination: 24.27 deg Field Strength: 57613 nT Mag Dip Anglt: 80.85 deg Vertical Sedan: Depth From (TVD) +N/~ +E/-W Direction ft ft ft deg 37.70 0.00 0.00 212.01 Survey Program for Definitive Wellpath Date: 2/5/2006 Validated: Yes Version: 6 Atonal From To Survey Toolcode Tool Name ft ft 100.00 10300.00 1 : Schlumberger GCT multishot GCT-MS Schlumberger GCT muttishot 10343.00 11813.00 MWD (10343.00-11813.00) MWD MWD -Standard Aonotatae MD TVD ft ft 10300.00 8738.53 TIP 10343.00 8772.19 KOP 11813.00 9007.51 TD Survey: MWD Start Date: 10!16/2006 Company: Baker Hughes INTEQ Engineer: Took MWD;MWD -Standard T~1-to: From: Definitive Path Survey MD Inel Azim TVD Sys TVD N/5 E/W ' MapN MapE VS DLS Tool ft deg deg ft ft ft ft ft ft tt degllOOft 10300.00 38.58 226.37 8738.53 8648.83 -4117.71 -1300.77 5954965.86 597974.91 4181.22 0.00 MWD 10343.00 38.39 226.55 8772.19 8680.49 -4136.14 -1320.17 5954947.17 597955.76 4207.13 0.51 MWD 10370.48 41.27 224.17 8793.29 8701.59 -4148.52 -1332.68 5954934.64 597943.41 4224.25 11.86 AAV1fD 10399.73 54.39 222.23 8812.89 8721.19 x{164.31 -1347.46 5954918.65 597928.85 4245.48 45.12 MWD 10434.71 71.50 223.70 8828.74 8737.04 -4187.00 -1368.63 5954895.69 597907.97 4275.94 49.05 MWD 10487.04 88.33 228.72 8834.38 8742.68 -4208.91 -1391.54 5954873.48 597885.35 4306.67 54.24 MY4D 10500.23 92.65 232.98 8834.10 8742.40 -4229.86 -1417.27 5954852.20 597859.91 4338.E 18.28 MWD 10530.83 96.10 238.26 8831.76 8740.06 -4247.08 -1412.44 5954834.84 597834.98 4366.01 20.57 MVVD 10564.10 95.42 242.80 8828.42 8736.72 -4263.36 -1471.25 5954817.99 597806.38 4395.08 13.73 MWD 10594.78 94.19 246.53 8825.85 8734.15 -4276.44 -1498.87 5954804.54 597778.94 4420.81 12.76 MWD 10628.90 95.58 252.59 8822.95 8731.25 -4288.31 -1530.71 5954792.26 597747.26 4447.75 18.16 MWD • • r by BP Alaska $ Baker Hughes INTEQ Survey Report uvTEQ Compa®y: BP Amoco IMte: 11/8/2006 Timr. 10:29:21 PaEe: 2 Field: Prudhoe Bay Co-ardieate(NE) Reference: Well: Z-01, True North Site: PB Z Pad Verfieal (TVD) Reference: 1:01 6/28!1988 00:00 91. 7 WeIF Z-01 SecUao (VS) Reterence: User (O.OON,O. OOE,212.01 Azi) Wellpat6: 2-01AP81 SarveyCakou Method: Minimum Curvature Db: Orade surrey MD Ieel Azim TVD Sys TVD N/5 FJ1H MspN MapE VS DLS Tool R deg deg ft 1t ft ft ft ft ft deg/100ft 10656.77 96.86 257.45 8819.92 8728.22 -4295.47 -1557.47 5954784.75 597720.60 4468.01 17.93 MWD 10693.43 96.11 263.68 8815.78 8724.08 -4301.43 -1593.38 5954778.31 597684.77 4492.10 17.01 MWD 10731.90 89.65 268.28 8813.85 8722.15 -4304.12 -1631.68 5954775.11 597646.52 4514.68 20.80 M1IVD 10762.94 90.97 273.53 8813.68 8721.98 -4303.63 -1662.70 5954775.19 597615.49 4530.70 17.44 MWD 10795.21 92.51 276.05 8812.70 8721.00 -4300.94 -1694.84 5954777.46 597583.32 4545.45 9.15 MWD 10837.40 91.15 279.69 8811.35 8719.65 -4295.17 -1736.61 5954782.68 597541.49 4562.69 9.21 MWD 10859.67 88.66 276.51 8811.39 8719.69 -4292.03 -1758.65 5954785.53 597519.41 4571.71 18.14 MWD 10893.79 85.56 277.07 8813.11 8721.41 -4288.00 -1792.48 5954789.11 597485.53 4586.23 9.23 MWD 10921.32 85.26 279.73 8815.31 8723.61 -4283.99 -1819.63 5954792.76 597458.34 4597.22 9.69 MWD 10957.76 89.58 284.59 8816.95 8725.25 -4276.33 -1855.19 5954799.95 597422.68 4609.57 17.83 MWD 10995.67 91.90 293.81 8816.46 8724.76 -4263.87 -1890.95 5954811.93 597386.76 4617.96 25.08 MWD 11023.26 91.18 298.44 8815.72 8724.02 -4251.73 -1915.71 5954823.74 597361.85 4620.78 16.98 MWD 11055.19 89.86 304.47 8815.43 8723.73 -4235.08 -1942.93 5954840.03 597334.41 4621.09 19.33 MWD 11087.06 88.88 308.43 8815.78 8724.08 -4216.15 -1968.56 5954858.62 597308.54 4618.62 12.80 MWD 11124.00 89.59 313.82 8816.27 8724.57 -4191.87 -1996.37 5954882.54 597280.41 4612.77 14.72 MWD 11154.26 88.73 317.59 8816.72 8725.02 -4170.21 -2017.50 5954903.91 597259.00 4605.61 12.78 MWD 11188.30 88.05 322.52 8817.67 8725.97 -4144.14 -2039.34 5954929.69 597236.82 4595.07 14.61 MWD 11225.53 85.13 326.31 8819.89 8728.19 -4113.92 -2060.96 5954959.61 597214.80 4580.90 12.84 MWD 11257.52 83.12 330.91 8823.17 8731.47 -4086.77 -2077.53 5954986.54 597197.88 4566.66 15.62 MWD 11290.77 81.67 334.60 8827.57 8735.87 -4057.47 -2092.62 5955015.63 597182.41 4549.81 11.83 MWD 11320.66 79.78 336.15 8832.38 8740.68 -4030.66 -2104.91 5955042.28 597169.76 4533.59 8.13 MWD 11351.94 78.22 342.12 8838.36 8746.66 -4001.98 -2115.84 5955070.81 597158.45 4515.07 19.39 MWD 11382.43 76.68 348.53 8844.99 8753.29 -3973.21 -2123.38 5955099.48 597150.53 4494.67 21.13 MWD 11415.25 74.23 350.87 8853.23 8761.53 -3941.96 -2129.07 5955130.65 597144.44 4471.18 10.17 MWD 11443.27 72.57 353.93 8861.24 8769.54 -3915.35 -2132.62 5955157.21 597140.53 4450.50 12.03 MWD 11479.94 70.90 354.98 8872.73 8781.03 -3880.69 -2135.99 5955191.81 597136.71 4422.89 5.30 MWD 11506.42 69.52 353.06 8881.70 8790.00 -3855.91 -2138.58 5955216.55 597133.79 4403.25 8.59 MWD 11536.36 67.90 349.28 8892.57 8800.87 -3828.35 -2142.86 5955244.05 597129.15 4382.15 12.95 MWD 11569.68 66.48 345.25 8905.49 8813.79 -3798.40 -2149.62 5955273.91 597121.99 4360.33 11.93 MWD 11597.77 65.34 341.34 8916.96 8825.26 -3773.85 -2156.98 5955298.36 597114.31 4343.41 13.34 MWD 11628.26 63.73 336.13 8930.08 8838.38 -3748.20 -2166.96 5955323.87 597104.00 4326.95 16.30 MWD 11656.61 64.17 333.18 8942.53 8850.83 -3725.19 -2177.86 5955346.73 597092.79 4313.22 9.48 MWD 11689.90 66.14 332.03 8956.52 8864.82 -3698.37 -2191.76 5955373.36 597078.54 4297.84 6.70 MWD 11731.31 66.41 328.83 8973.18 8881.48 -3665.40 -2210.46 5955406.08 597059.40 4279.80 7.10 MWD 11769.12 64.78 323.87 8988.81 8897.11 -3636.75 -2229.53 5955434.48 597039.97 4265.60 12.70 MVW 11813.00 64.78 323.87 9007.51 8915.81 -3604.69 -2252.93 5955466.22 597016.14 4250.82 0.00 MWD ' TREE= • 3-118" MCEVOY WE~,LHEAD= MCEVOY ACTUATOR = OTIS KB. ELEV = 91.73' BF. ELEV = KOP = 57.28' 3000' Max Angle = 43 ~ 9054' Datum MD = 10497' Datum TV D = 8800' SS DRLG DRAFT 13-3t8" CSG, 68#, L-80, ID = 12.41 S" H 2672' X41/2" TBG, 12.6#, CR, .0152 bpt, ID = 3.95$" ~ TOP OF 7" LNR ~-{ 9920' Z-01 A RWO/CTD Sidetrack n u SAFETY NOTES: 3 LATERAL ATTEMPTS, ALL PaA wlCEMEM "'CHROMETBG"' 3' ~~ 41 /2" "X" NP 13Cr80 , ID = 3.813" GAS LET MANDRELS ST MO TVD DEV TYPE VLV LATCH PORT DATE 8 2496 2496 0 MMG OCR RKP 0 10109!06 7 4288 4170 34 MMG DRAY RK 0 10/09/06 6 5073 4778 41 MMG DMY RK 0 10/09/06 S 6108 5568 39 MMG DMY RK 0 10/09/06 4 7314 6479 41 MMG DMY RK 0 10/09/06 3 8226 7187 40 MMG DMY RK 0 10/09/06 2 8967 7730 44 MMG DMY RK 0 10/09/06 1 9669 8250 39 MMG DMY RK 0 10/09/06 9740' 4112" OTIS X NIP, ID = 3.813" 9761' Symphony Dow Whole PSI Gua 9781' 9-518" x 41 /2" PKR, ID = 4.0" 98~ 4-1(2" OTIS X NIP. ID = 3.813" 9-518" CSG, 47#, NT-80S, ID = 8.681" I--I 10191' ~--~ I I ~~ 10079' 41 /2" TBG TAIL PERFORATION SUMMARY REF LOG: A NGLE A T TOP PERT Note: Refer to Roduction DB for historical pert data SQE SPF INTERVAL OpnlSgz DATE u 7" LNR, 26#, L-80, .0383 bpf, ID = 6.276" ~ 10864' I ~ o33c.' TJp r~ CnmQrY+" IO~j ~ t~ ~ '~ ~ o-~ W -t~ TO ~ 0~r 1034 3R -~ ~hanical Whipstock \ 10400' Top P&A Cement 1~~~-MARKER JOINT DATE REV BY COMMEMS DATE REV BY COMMENTS 07/2/88 ORIGINAL COMPLETION 11!04!06 NORDIC2 RWO 8 CTD (SUSPBJDED) wire) PRUDHOE BAY UNTf 1NELL: Z-OtA PERMrf No: API No: 50-029-21830-01 SEC 19, T11 N, R12E, 977' FNL 83456' FEL BP Exploration (Alaska) A ~ ~,., ~ ~ ~, ~ '~.~~' .~ ~''~,~ ~.~" ~fm. ALA-i!SA OIL A1~TD GA5 C011TSER'QA~'I011T CO1rII~II55IO1~T Terrie Hubble Technical Assistant BP Exploration (Alaska), Inc. PO Box 196612 Anchorage, AK 99519 Re: Prudhoe Bay Field, Prudhoe Bay Pool, PBU Z-OlA Sundry Number: 307-329 Dear Ms. Hubble: SARAH PALIN, GOVERNOR 333 W. 7th AVENUE, SUITE 100 ANCHORAGE, ALASKA 99501-3539 PHONE (907) 279-1433 FAX (907) 276-7542 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. When providing notice for a representative of the Commission to witness any required test, contact the Commission's petroleum field inspector at (907) 659-3607 (pager). As provided in AS 31.05.080, within 20 days after written notice of this decision, or such further time as the Commission grants for good cause shown, a person affected by it may file with the Commission an application for rehearing. A request for rehearing is considered timely if it is received by 4:30 PM on the 23rd day following the date of this letter, or the next working day if the 23rd day falls on a holiday or weekend. A person may not appeal a Commission decision to Superior Court unless rehearing has been requested. DATED this day of October, 2007 Encl. ~7C~-C~~ Sincerely, Ms ^~ ~o~ lo' Z~°sTATE of A AsKa~~~ •a~-~~ DECEIVED `~'I ALA~RA OIL AND GAS I CONSERVATION COMM15510N ~ ~ APPLICATION FOR SUNDRY APPROVAL` ~' t~3~OCT on eery ~~ ~Qn 2 3 2007 -- - ~- --•--- - -Ka uu o+ uas guns. ~ornmissran 1. Type of Request: ^ Abandon ®Suspend ^ Operation Shutdown ^ Perforate ^ Time Extenpjpph0~8Qf? ^ Alter Casing ^ Repair Well ^ Plug Perforations ^ Stimulate ^ Re-Enter Suspended Well ^ Change Approved Program ^ Pull Tubing ^ Perforate New Pool ^ Waiver ^ Other 2. Operator Name: 4. Current Well Class: 5. Permit To Drill Number BP Exploration (Alaska) Inc. ®Develo ment ^ Ex l t 206-038 - 3 Add p p ora ory . ress: ^ Service ^ Stratigraphic 6. API Number: P.O. Box 196612, Anchorage, Alaska 99519-6612 50-029-21830-01-00 7. If perforating, closest approach in pool(s) opened by this operation to nearest 8. Well Name and Number: property line where ownership or landownership changes: Spacing Exception Required? ^ Yes ®No PBU Z-01A ' 9. Property Designation: 10. KB Elevation (ft): 11. Field /Pool(s): ADL 028245 ' 91.7" Prudhoe Bay Field / Prudhoe Bay Pool t2_ PRESENT WELL CONDITION SUM MARY Total Depth MD (ft): Total Depth TVD (ft): Effective Depth MD (ft): Effective Depth TVD (ft): Plugs (measured): Junk (measured): 11240 8821 10336 8767 10336 None Casin Len th Siz MD TVD Burst Colla se tructural and for 1 0' 20" 11 110' Surface 2672' 13-3/8" 2672' 2672' 4 30 227 Intermediate 10192' 9-5/8" 10192' 8655' 6 70 476 Pro ction Liner 944' 7" 992 ' - 10336' 8445' - 9183' 7240 5410 (Top of Window at 10348') Perforation Depth MD (ft): Perforation Depth TVD (ft): Tubing Size: Tubing Grade: Tubing MD (ft): None None 4-1/2", 12.6# 13Cr80 10079' Packers and SSSV Type: 9-5/8" x 4-1/2" Baker'S-3' packer Packers and SSSV MD (ft): 9781' 13. Attachments: ® Description Summary of Proposal ^ BOP Sketch 14. Welt Class after proposed work: ^ Detailed Operations Program ^ Exploratory ®Development ^ Service 15. Estimated Date for 16. Well Status after proposed work: Commencin O erations: ^ Oil ^ Gas ®Plugged ^ Abandoned 17. Verbal Approval: Date: Commission Representative: ^ WAG ^ GINJ ^ WINJ ^ WDSPL 18. I hereby certify that the foregoing is true and correct to the best of my knowledge. Contact Dan Robertson, 564-5546 Printed Name Te ie Hubble Title Technical Assistant Prepared By Name/Number: Signature Phone 564-4628 Date ~ ~ Terrie Hubble, 564-4628 Commission Use Onl Sundry Number: ~~ Conditions of approval: Notify Commission so that a representative may witness ^ Plug Integrity ^ BOP Test ^ Mechanical Integrity Test ^ Location Clearance Other: Subsequent Form Required: ~ ~,`~ APPROVED BY ~ r IJ ,r'D~ A roved B : MISSIONER THE COMMISSION Date ~ ~%6 V~~~~ ~V-TVV 1\~/r lJri4 VV/GVVV ' /• ~ / ` / oRi~tNA~ . _ s~~~o~~~~~oo, Submit In Duplicate ., by ~ ~~~ ~~1 ii ~~~ Terrie Hubble '~~~~~~~~ Technical Assistant - BP Exploration (Alaska) Inc. Drilling & Wells 900 East Benson Boulevard P.O. Box 196612 Anchorage, Alaska 99519-6612 (907) 561-5111 October 22, 2007 Alaska Oil & Gas Conservation Commission 333 West 7th Avenue, Suite 100 Anchorage, Alaska 99501 Reference: API # 50-029-21830-01-00 Permit # 206-038, PBU Z-01A Direct: (907) 564-4628 Terrie.hubble~bp.com To Whom It May Concern: PBU Z-01A is currently in an Operations Shutdown status due to complications during sidetracking operations in September 2006. We are requesting at this time that this status be changed to Suspended. This well was plugged back to , approximately 10336', which is just above the top of window (see 10-404, ~ ~~~~~~ Dated 11/28/06). BP would like to retain the ability to sidetrack this well in the future although there are no plans developed to do so at this time. Thank you very much for your assistance in this matter. Sincerely, ~~ Terrie Hubble xc: Well Files PDC Daniel B. Robertson, Sr. Petroleum Engineer TREE= 3-118" MCEVOY FlUELLHEAD= MCEVOY ACTUATOR = OTIS KB. ELEV = 91.73' BF. ELEV = 57.28' KOP = 3000' Max Angle = 43 ~ 9054' Datum MD = 10497' Datum TVD = 8800' SS DRLG DRAFT Z-O ~ A w CEMENT~.CHROME~TBG"' BNPTS,ALLPaA RWO/CTD Sidetrack 2013' -141 /2" "X" NN' 13Cr80 , ID = 3.813" 13-318" CSG, 68#, L-80, ID = 12.41 S" H 2672 ~ 41/2" TBG, 12.6#, CR, .0152 bp(, ID = 3.958" ~ GAS LIFTMANDRELS ST MD TV D DEV TYPE V LV LATCH PORT DATE 8 2496 2496 0 MMG OCR RKP 0 10/09!06 7 4288 4170 34 MMG DMY RK 0 10/09/06 6 5073 4778 41 MMG DRAY RK 0 10/09/06 5 6108 5568 39 MMG DMY RK 0 10/09/06 4 7314 6479 41 MMG DMY RK 0 10/09/O6 3 8226 7187 40 MMG DMY RK 0 10/09!06 2 8967 7730 44 MMG DMY RK 0 10109!06 1 9669 8250 39 MMG DMY RK 0 10/09/06 9740' 41 /2" OTIS X NIP, ID = 3.813" g7g1' Symphony Daw Whole PSI Guages (I w ire) 9781' 9-518" x 41/2" PKR, ID = 4.0" TOP OF 7" LNR 9920' 9805 4-1l2" OT1S X NIP, ID = 3.813" 9-5/8" CSG, 47#, NT-80S, ID = 8.681" PERFORATION SUMMARY REF LOG: A NGLE A T TOP PERF: Note: Refer to Reduction DB for historical pert data SQE SPF INTERVAL Opn/Sqz DATE PBTD 10820' 7" LNR, 26#, L-80, .0383 bpf, ID = 6.276" 10864' 10079' ~-X4112"TBGTAIL ~ S ~ e~ci~.~~ , ~ ~~ do y~~c 10342 3R Mechanical Whipstock 10400' Top P8A Cement 1051 T MA RKB1 JOINT DATE REV BY COMMENTS DATE REV BY COMMENTS 07/23/88 ORIGINAL COMPLETION 11/04106 NORDIC2 RWO b CTO (SUSPBdDED) PRUDHOE BAY UNIT WELL: Z-01A PERMIT No: API No: 50-029-21830-Ot SEC 19, T11 M, R12E, 97T FNL 83456' FEL BP Exploration (Alaska) Transmittal Form INTEQ r,.r ~,~ ~~~n~x~~~ BAKER ~~""" NUGFIES ~-= Anchorage GEOScience Center ~ : W~__. r`" ~ ~~ To: AOGCC ~ 333 West 7th Ave, Suite 100 ~~~ Anchorage, Alaska °-~ ', 99501 Attention: Christine Mahnken -•••~• Reference: Z-OIAPBl "'•" i--== I Contains the following: 1 LDWG Compact Disc `' ~ T _, (Includes Graphic Image files) _ ~ _i 1 LDWG lister summary ' , f 1 blueline - GR Directional Measured Depth Log 1 blueline - MPR/Directional TVD Log ', _ -- 1 blueline - MPR/Directional Measured Depth Log ' ' ~ 1S~a3 -03~ s; E LAC Job#: 1252553 ~~ 1 _ _. ~`• Sent By: Deepa Joglekar Dates ~ .-~ ~ _ ~111'~~' ~ ''` Received By: Date: =~ l i G ~ ~ 20 ~ 7 PLEASE ACKNOWLEDGE RECEIPT BY SIGNING & REIING OR FAXING YOUR COPY FAX: (907) 267-6623 ~ Baker Hughes INTEQ J' 7260 Homer Drive ! , Anchorage, Alaska ~ ' 99518 Direct: (907) 267-6612 ', FAX: (90?) 267-6623 Transmittal Form INTEQ To: AOGCC 333 West 7th Ave, Suite 100 Anchorage, Alaska 99501 Attention: Christine Mahnken Reference: Z-OlAPB2 i ritr BAKER HUGHES Anchorage GEOScience Center E f Contains the following: I 1 LDWG Compact Disc r (Includes Graphic Image files) `~ 1 LDWG lister summary s~ '! 1 blueline - GR Directional Measured Depth Log ~~ 1 blueline - MPR/Directional TVD Log 1 blueline - MPR/Directional Measured Depth Log j t! i~ E ~ ~~ ;~ f; ~! x !~ 'i i LAC Job#: 1252553 ___a ~,:~ ~ Sent By: Deepa Joglekar Da#e: A~g~`~'~0 ~p14tIM 10-%9 aLfifltW~ ..... ... ........ "t . i ~ Received By• Date• ~~~~ °~ ~~~? nc~or PLEASE ACKNOWLEDGE RECEIPT BY SIGNING & RETURNING OR FAXING YOUR COPY FAX: (907) 267-6623 Baker Hughes INTEQ -._ J! j 7260 Homer Drive ' ~' i Anchorage, Alaska 99518 I Direct: (907) 267-6612 FAX: (907) 267-6623 ~~~ ~ ~ Transmittal Form ~~~® BAKER NU~sHES INTEQ To: AOGCC 333 West 7th Ave, Suite 100 Anchorage, Alaska 99501 Attention: Christine Mahnken Reference: Z-OlAPB3 Anchorage GEOScience Center ~ ~ ~: Contains the following: 1 LDWG Compact Disc (Includes Graphic Image files) 1 LDWG lister summary 1 blueline - GR Directional Measured Depth Log 1 blueline - MPR/Directional TVD Log 1 blueline - MPR/Directional Measured Depth Log c.~U(o -C~3~f ~ ~ S 3~ 5~ LAC Job#: 1252553 Sent By: Deepa Joglekar Received By: D Date: ,~~~r_ ~ 2~i1f~7 PLEASE ACKNOWLEDGE RECEIPT BY SIGNING & R~ ' ING OR FAXING YOUR COPY FAX: (907) 267-6623 Baker Hughes INTEQ 7260 Homer Drive Anchorage, Alaska 99518 ~,~ Direct: (907) 267-6612 ', FAX: (907) 267-6623 STATE OF ALASKA ~~~~~~~~ ALAS~IL AND GAS CONSERVATION COMMI~N NO V 2 $ l tlGb REPORT OF SUNDRY WELL OPERATION~~aska Oil & Gas Cons. Cofnmiss+on 1. Operations Performed: faAO ^ Abandon ^ Repair Well ^ 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 206-038 3. Address: ^ Stratigraphic ^ Service 6. APt Number: P.O. Box 196612, Anchorage, Alaska 99519-6612 50-029-21830-01-00 7. KB Elevation (ft): 91 7, 9. Well Name and Number. PBU Z-01A 8. Property Designation: 10. Field /Pool(s): ADL 028245 Prudhoe Bay Field / Prudhoe Bay Pool 11. Present well condition summary Total depth: measured 11240 feet true vertical 8821 feet Plugs (measured) 10336 Effective depth: measured 10336 feet Junk (measured) None true vertical 8767 feet Casing Length Size MD TVD Burst Collapse Structural Conductor 110' 20" 110' 110' Surface 2672' 13-3/8" 2672' 2672' 4930 2270 Intermediate 10192' 9-5/8" 10192' 8655' 6870 4760 Production Liner 944' 7" 9920' - 10864' 8445' - 9183' 7240 5410 (Top of Window at 10348') Perforation Depth MD (ft): None Perforation Depth TVD (ft): None 4-1/2", 12.6# 13Cr80 10079' Tubing Size (size, grade, and measured depth): Packers and SSSV (type and measured depth): 9-5/8" x 4-1/2" Baker'S-3' packer 9781' 12. Stimulation or cement squeeze summary: Intervals treated (measured): 10336' Treatment description including volumes used and final pressure: Abandon third sidetrack attempt with 21 Bbls Class 'G' Cement. Cleaned out to 10336'. 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: 14. Attachments: ^ Copies of Logs and Surveys run 15. Well Class after proposed work: ^ Exploratory ®Development ^ Service ® Daily Report of Well Operations 16. Well Status after proposed 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 Aras Worthington, 564-4102 306-361 Printed Name Terrie Hubble Title Technical Assistant ~ // Prepared By Name/Number: (t~Z~ Signature l/]~ Terrie Hubble, 564-4628 Phone 564-4628 Date Form 10-404 Revised 04/2006 (~ (~ Submit Original Only lJ ~ ~ lJ ~ ~ ~ ~ ~~~~ 5~~, ~~Ok~ ~' 2006 BP EXPLORATION Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Event Name: REENTER+COMPLETE Contractor Name: Rig Name: Date I From - To I Hours I Task I Code I NPT 9/23/2006 21:00 - 00:00 3.00 MOB P 9/24/2006 00:00 - 07:00 7.00 P 07:00 - 08:00 1.00 P 08:00 - 10:45 2.75 KILL P 10:45 - 12:30 I 1.751 KILL I P 12:30 - 13:15 0.75 BOPSU P 13:15 - 13:45 0.50 BOPSU P 13:45 - 16:00 2.25 BOPSU P 16:00 - 18:00 2.00 BOPSU P 18:00 - 18:20 I 0.331 BOPSUR P 18:20 - 00:00 5.67 BOPSU P 9/25/2006 00:00 - 04:30 4.50 BOPSU 04:30 - 13:00 8.50 BOPSU 13:00 - 14:45 1.75 BOPSUf 14:45 - 15:45 1.00 WHSUR 15:45 - 16:00 0.25 PULL 16:00 - 18:00 2.00 PULL 18:00 - 18:15 0.25 PULL 18:15 - 00:00 5.75 PULL 9/26/2006 100:00 - 10:30 I 10.501 PULL I P 10:30 - 13:00 I 2.501 PULL I P 13:00-13:45 ( 0.751WHSURIP 13:45- 16:30 I 2.751 WHSURP 16:30-18:00 I 1.501WHSURIP 18:00 - 18:20 I 0.331 WHSUR I P 18:20-21:00 I 2.671 WHSURIN Page 1 of 30 Spud Date: 6/28/1988 Start: 9/24/2006 End: Rig Release: Rig Number: Phase Description of Operations PRE Move rig over well. Rig up flow back tank. Rig up cellar berm. Accept rig at 2100 hrs on 9/23/06. PRE Continue to rig up. Make up and test kill and choke lines in cellar. Load pits with KCL water, and 250 bbls Safe-Surf. DECOMP Pump down IA to displace FP from tbg. DECOMP Displace tbg with KCL w/ safe-surf-o. Take returns up IA. Pump pressure at 1530 psi at 5.8 bbl/min. 685 bbls pumped. DECOMP Monitor and verify well is dead. Wait on Cameron wellhead hand, who is stuck in construction at KRU bridge. DECOMP Blow down control lines. Set TWC plug in tubing hanger. DECOMP PT TWC to 500 psi. Blow down control lines. DECOMP Prep to ND tree. DECOMP ND tubing head adapter and tree. Check threads on top of tbg hanger. MU 10 rds with 3-1/2" 8rd EUE. Prep to lift 13-5/8" stack. DECOMP PJSM with new crews discuss procedure and hazards for NU 13-5/8" BOP stack. DECOMP NU BOP stack. DECOMP NU 13-5/8" BOPS. MU kill and choke lines to mud cross. DECOMP Test BOP to low of 250 psi, high of 3500 psi, 5 min each. Alert AOGCC rep John Crisp for witnessing BOP test. Hold SIMOPS meeting with AIC supervisor in TL Camp. Review job scopes for rig and gravel crew. Discuss communications and contact info. Discuss hazards, in particular spotting of equipment and traffic patterns. DECOMP RU DSM Lubricator and remove TWC. DECOMP MU landing joint and torque to 3500 ft-Ibs. Back off LDS on tubing head. DECOMP PJSM. Lifting tubing hanger. DECOMP POH with hanger 54k up wt. MU control lines to HES spooler. LD hanger. LD landing jt. DECOMP .Crew change. PJSM for LD 3.5" tbg with control line. DECOMP Pull and LD 3.5" tbg. Midnight: 100 jts, SSSV and 1 GLM have been laid down. DECOMP Continue to pull and LD 3.5" tbg. Recovered 302 jts, joint #303 was cut 13.38' down from the top. Also recovered 5 GLS, 1 sliding sleeve, 1 SSSV, 4 stainless bands, and 30 SSSV Lasalle clamps. DECOMP Rig down and clean up floor after pulling tbg. Prepare to change out packoff on tubing head. Bled down OA to 0 psi,. shut in. Pressure built to 30 psi. Bled back down to 0 psi. Monitored and verified no pressure build. DECOMP RU and pull 9-5/8" mandrel style packoff. Junk ring and seal element parted from packoff assembly. DECOMP Call for 9-5/8" storm packer. MU kelly assembly and set in rat hole. DECOMP Load 12 4-3/4" drill collars and 5 joints of drill pipe into pipe shed. Clean and strap same DECOMP PJSM: review pinch points and other hazards for PU DC's. Review on the rig floor those pinch points with all hands. One new Nordic hand given special attention and coaching. DECOMP PU 12 collars and 4jts drillpipe. PU Howco SSSV/RTTS and set just below wellhead. SFAL Printed: 11/6/2006 6:05:35 AM BP EXPLORATfON Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Event Name: REENTER+COMPLETE Start: 9/24/2006 Contractor Name: Rig Release: Rig Name: Rig Number: Date From - To Hours Task Code NPT Phase 9/26/2006 .21:00 - 21:10 0.17 WHSUR N SFAL DECOMP 21:00 - 00:00 3.00 WHSUR N SFAL DECOMP 9/27/2006 9/28/2006 9/29/2006 00:00 - 00:30 0.50 WHSUR N 00:30 - 02:15 1.75 WHSUR N 02:15 - 02:30 0.25 WHSUR N 02:30 - 04:45 2.25 WHSUR N 04:45 - 11:00 6.25 WHSUR N 11:00 - 14:00 14:00 - 15:30 15:30 - 16:45 16:45 - 18:00 18:00 - 22:00 3.00 WHSUR N 1.50 WHSUR N 1.25 WHSUR N 1.25 WHSUR P 4.00 WHSUR P 22:00 - 22:10 22:10 - 00:00 00:00 - 00:45 00:45 - 03:00 03:00 - 04:30 04:30 - 06:00 06:00 - 20:00 20:00 - 21:35 21:35 - 00:00 00:00 - 06:00 06:00 - 06:15 0.17 WHSUR P 1.83 WHSUR P 0.75 WHSUR P 2.25 FISH P 1.50 FISH P 1.50 FISH P 14.00 FISH P 1.58 FISH P 2.42 FISH P 6.00 FISH P 0.25 FISH P SFAL DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP Page 2 of 30 Spud Date: 6/28/1988 End: Description of Operations PJSM review ND procedures and hazards. Make break on BOP stack below tbg head. Remove riser and choke line. Install lifting cap on annular. PU and move aside. Pull remaining pieces of mandrel packer from wellhead. Install new pack-off. Unable to seat last 1/2" (due to either hydraulic effect or lower junk ring compressing lower seal) in order to RILDS. Tryed stacking blocks but just not enough weight. Discuss problem with Cameron & crews. Only alternative is to use the BOP stack weight. RU 3x12 across pack-off. Unable to lift stack high enough to clear top of pack-off because of bridge crane's spool has a small cat's xxx. Held PJSM to discuss steps forward and get everyone on the same page. Pulled out new mandrel pack-off. Removed kill line from stack. Re-set stack and tbg head on wellhead MU 4 bolts to hold in place. Run out enough bridge crane cable to clear backlash then re-spool. Pick stack and tbg head back up. Install the Cameron mandrel pack-off. Set 3x12 on top then gently set stack on it to fully seat pack-off. RILDS. Nipple up BOP stack and choke/kill lines. Begin loading pipeshed w/ 3-1/2 DP PT packoff at 3800 psi NU riser Install test plug. Body test BOPE equipment flange breaks to 3500 psi against blind rams. Remove test plug Release RTTS w/ 24k, chk for flow 15 min, none. POOH LD RTTS. Install TIW valve in top jt of DP PU kelly and prep for service Fin loading pipeshed w/ 305 jts 3-1/2 DP Continue working with kelly. MU kelly hose and spinner hoses. PT kelly hose connection and upper kelly valve to 250psi low 3500 psi high 5 min each. PJSM review pipe handling procedures. Stand back DC's and 2 stds DP Set wear bushing. PU fishing tools. RIH with drill collars and 2 stands of DP form derrick. Drift and PU drillpipe. (will need 297 jts total) Continue to drift and PU drillpipe. PU kelly on jt #297'. establish circulation 50spm / 500psi, wt check rotating 113k up 105k down non-rotation 120k up 105k down. RIH tag top of cut-off jt at 9810' with 23.5' kelly in. Mill over 4.15" OD jet-cut flare for 2". RIH 3' and setdown with 20k. Maximum pump pressure was 585psi. PU with overpull to 130k. Tried several time to repeat this overpull but did not. Overshot Seal Assy must have been hydrauliclly shear when packer was set back in 1988'. This was mentioned on the 88 report but not clearly stated without doubt. .Setback kelly. TOH TOH to DC's j Crew change/safety mtg Printed: 71/6/2006 8:05:35 AM BP EXPLORATION Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Event Name: REENTER+COMPLETE Start: 9/24/2006 Contractor Name: Rig Release: Rig Name: Rig Number: Date I From - To I Hours I Task (Code 9/29/2006 06:15 - 06:45 06:45 - 08:15 08:15 - 08:40 08:40 - 10:00 10:00 - 11:15 11:15 - 17:40 17:40 - 18:40 18:40 - 19:00 19:00 - 20:00 0.50 FISH N 1.50 FISH P 0.42 FISH N 1.33 FISH N 1.25 FISH N 6.42 FISH N 1.00 FISH N 0.33 FISH N 1.00 FISH N 20:00 - 00:00 9/30/2006 00:00 - 04:00 04:00 - 05:30 4.00 FISH N 4.00 FISH N 1.50 FISH N 05:30 - 06:15 0.75 FISH P 06:15 - 07:15 1.00 FISH P 07:15 - 08:45 1.50 FISH P 08:45 - 10:15 1.50 FISH P 10:15 - 12:30 2.25 FISH P 12:30 - 15:45 3.25 FISH P 15:45 - 17:00 1.25 FISH P 17:00 - 19:45 1 2.751 FISH I P Page 3 of 30 Spud Date: 6/28/1988 End: NPT ~ Phase ~ Description of Operations SFAL DECOMP Add backup Totco weight indicator since the recently repaired one still doesn't work? DECOMP Standback DC's LD fishing assy w/ no recovery. Found grapple on spear had been fully inserted, but had probably been in the release position during insertion. The grapple probably released just after dressing the top of the stub while RIH. Discuss DFAL DECOMP MU same BHA assy after replace shear pin to keep grapple in the latch position RREP DECOMP Replace hyd cylinder that adjusts height of pipe spinner DFAL DECOMP MU DC's Adjust hydraulics to pipe spinner (1/4) DFAL DECOMP TIH w/ DP RREP DECOMP Noise coming from within drawworks front guards. Remove guards from off drillers side. Drum rubbbing on guard. Shim with washers and replace guards. DECOMP Continue RIH with final 3 stds. PU 2 singles #297 and #298 with TIW. DECOMP Check wts non-rotation 177k up 143k down. RIH setdown 25k with 23' in on jt#298. PU spear did not engage. Repeat same results. LD jt#298 and PU kelly wts 182k up 162k down. RIH 21' slight bump on top of tbg stub, and make 3 turns right regain wt RIH 1/2' see another bump in wt make 3 more RH turns regained wt. RIH 3' and engage top of tbg stub with spear. PU to 220k slack-off back to 140k 3 times to insure good bite on stub. PU to 262k (80k over) allow jars to go off. Repeat 6 times. Take to 90k over jar 1 time and appears Overshot Seal Assy released from Slickstick. PU slight drag for 14' -good sign. DECOMP Setback kelly and blowdown. TOH DECOMP TOH to collars. DECOMP LD accelerators. Stand back collars. Fish is on. Break washpipe extension. LD fish. Recovered more fish than planned ...the TIW OS had not been previously sheared so recovered the seal assy too plus -2' of 5-3/8" OD tubing extension below the seal assy which had pulled out of a collar. This leaves about 1' of latch assy which needs to be rotated. to be released and recovered before milling the packer slips DECOMP Discuss. Elect to mill the packer slips now. Then, will recover the packer and tailpipe w/ spear DECOMP WO additional BOT milling tools to arrive while bring boot baskets and other tools to floor and send fish and tools outside DECOMP MU BHA DECOMP MU DC's, accelerators and one stand DP DECOMP CDL 50' DECOMP TIH w/ 100 stds DP DECOMP Use 45T crane to remove the used CL spools and lift the HES symphony line spooler to the floor DECOMP Continue TIH 131 stds. Crew change. Brief PJSM continue TIH PU 2 singles #297 & 298. Kelly up. Printed: 11/6/2006 8:05:35 AM BP EXPLORATION Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Event Name: REENTER+COMPLETE Start: 9/24/2006 Contractor Name: Rig Release: Rig Name: Rig Number: Date i From - To I Hours I Task Code I NPT I Phase 9/30/2006 119:45 - 00:00 I 4.251 FISH I P 10/1/2006 100:00 - 06:00 6.00 FISH P 06:00 - 10:20 I 4.33 ~ FISH ~ P 10:20 - 16:30 I 6.171 FISH I P 16:30 - 22:00 I 5.501 FISH I P 22:00 - 23:45 1.751 FISH ~ P 23:45 - 00:00 I 0.25 I FISH I P 10/2/2006 00:00 - 06:30 6.50 FISH P 06:30 - 07:45 1.25 FISH P 07:45 - 09:00 1.25 FISH P 09:00 - 16:00 16:00 - 18:00 18:00 - 00:00 10/3/2006 00:00 - 01:30 7.00 BOPSU P 2.00 FISH P 6.00 FISH P 1.50 BOPSU P 01:30 - 02:40 ~ 1.171 FISH P 02:40 - 09:00 6.33 FISH P 09:00 - 10:45 1.75 FISH P Page 4 of 30 Spud Date: 6/28/1988 End: Description of Operations DECOMP Establish parameters: 3.Obpm 420psi, 90rpm upwt 185k dwn wt 160k rot wt 175k 200amps. Tagged top of packer ~ 9849' wtih 28' in on kelly. Mill packer 5-10k 220-260 amps. Pump 10 bbl 2# bio sweep every 1'. Midnight depth 9850.5'. DECOMP Continue milling packer f/ 9850'5'. 3 bpm 410psi 90 rpm's 5-12k wob 220-270 amps. Have tryed several times milling wo pumps. Also coming off packer and hitting hard. Slow going. DECOMP Mill w/o pump 1.5 hr, still no progress. Resume pumping 2.9/440 w/ 10-15k wob 210-280 amps. Spud occasionally and get some more torque. Pump a 35 bbl biozan super sweep DECOMP Lost 4k wob while gain 0.5' of hole. Torque increased too. Encouraging. Pump another sweep. Continue to mill w/ and w/o pump, spud occasionally 60-120 rpm 210-280 amps DECOMP Torqued up when dry drilling. PUH and temporarily immobile. Resume milling w/ pump. Pump 27 bbl biozan sweep. Appears we have cut the top slips and are spinning on the 'cone'. Back to dry drilling. Making some slow progress. Seeing enough torque at times to know somethings happening. Mill to 9852'. Torqued up. PU RBIH packer had fallen. Flow check. Make 2 connections with jts #299 & 300, tagged top of packer at 9908' with 20' in on kelly. DECOMP CBU 6 bpm 1400psi. No gas to surface. Shutdown and flow check. Dead DECOMP PJSM review tripping procedures and hazards. First night back for this crew. DECOMP TOH DECOMP Standback DC's DECOMP LD milling assy. Packer mill and pilot mill had fair wear, but could have milled another packer. All three boot baskets full of metal shavings-recovered 5-7 gallons. Clear floor of tools DECOMP Pull wear ring, set test plug. Weekly BOPE test was witnessed by AOGCC. Test VBR's w/ 4-1/2" test joint. No failures or retests. Pull test plug, set wear ring DECOMP Bring fishing tools to floor MU BHA DECOMP TIH w/ packer spear assy. DECOMP PU kelly. PT upper/lower kelly valves, standpipe and hose to 250 psi low/3500 psi high 5 min each. DECOMP MU kelly break circulation 3bpm 500psi. Non-rotating up wt 212k dwn wt 165k. RIH tag top of packer assy at 9908' w! 33.5' in on kelly. Work fish several times up wt 214-218k. Put in 3rd letthand torque. Setdown again with 50k. PU wt 214-218k looks like fish is dragging. Setback and blowdown kelly. DECOMP TOH first several stands pulling 195-200k showing some drag. DECOMP Standback DC's Standback fishing assy w/ no recovery. Appears junk is blocking full entry of grapple into 4" ID sub. There is one deep gouge on the bottom and two smaller ones on the side of the -1' guide below the grapple on the spear. The grapple had no marks Printed: 11/6/2006 8:05:35 AM BP EXPLORATION Page 5 of 30 Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Spud Date: 6/28/1988 Event Name: REENTER+COMPLETE Start: 9/24/2006 End: Contractor Name: Rig Release: Rig Name: Rig Number: Date From - To Hours Task Code NPT Phase ~ Description of Operations 10/3/2006 10:45 - 11:30 0.75 FISH P DECOMP Discuss. LD fishing assy and pick up new milling assy while wo mill. Will mill out the debris w/ a longer extension than was run on the packer milling tool. A 3-3/4" mill will be run on the bottom of a PRT tool 11:30 - 14:00 2.50 FISH P DECOMP PU boot baskets and bumper sub. Wait briefly for other Baker tools. MU remaining BHA extension length = 4.45 ft 14:00 - 21:30 7.50 FISH P DECOMP RIH with collars and DP. At crew change, installed new Nordic rented weight indicator. 21:30 - 22:10 0.67 FISH P DECOMP With 150 stds in and BHA at 423ft PU is 138k/108k. PU kelly and broke circuilateion at 5 bpm String wts at 142k/114k. Confirmed calculations. RIH and tagged top of fish at 9912 ft MD. PU and rotated down and tagged the top of the fish with 21 ft kelly in. 22:10 - 23:30 1.33 FISH P DECOMP Milling through top of fish at 9,912 ft. Op = 4.9 bpm at Pp = 1384 psi .230 to 260 amps (7000 ft-Ib Torque) After going into to the top of the fish 0.5 ft at 9912 ft, was unable to rotate through with torque limiter set at 360 amps. it would stall. Was able to RIH past the top of the fish Oft to where the 8.2" mill tags the top of the fish. RIH 4 times and tagged up on the 8-1/2" mill every time, but was still unable to rotate through the top of the fish 23:30 - 00:00 0.50 FISH P DECOMP PU above top of fish and circulated out 30 bbl biozan sweep out of hole. 20,000 strokes 10/4/2006 00:00 - 00:45 0.75 FISH P DECOMP Finish circulating BU at 6 bpm and recovered biozan sweep 00:45 - 01:00 0.25 FISH P DECOMP Set kelly back and blow down. Make ready to POOH 01:00 - 06:00 5.00 FISH P DECOMP POOH on a stand. Note: Block moving around in derrick due to high winds causing trip OOH to be slow. 06:00 - 08:30 2.50 FISH P DECOMP Crew change. Pull remaining 5 stds and BHA 08:30 - 10:00 1.50 FISH P DECOMP LD mill and junk baskets. A few lateral marks on mill, no damage or deep scaring. JB 1 /4 full with small pieces from packer and scale. 10:00 - 10:30 0.50 FISH P DECOMP PU spear assy. 10:30 - 17:00 6.50 FISH P DECOMP TIH 17:00 - 20:00 3.00 FISH P DECOMP Check wts 132k up 108k down. PU kelly 142k up 114k dwn. RIH tag top of fish with 35' kelly. Setdown 15k to engage spear. PU no indication wee have it. Put in 2 rds LH torque setdown 20k. Still no indication. PU wts are 142k. Setdown with 30k with same results pu and put in 2 rds LH torque try again. PU bring on pump to 3bpm and try again Same results. Circ and go through crew change RIH and tagged the top of the fish at 99912 ft. Worked torque down Spear is in the fish, (Pp increased 250 psi) but unable to latch. Could be trying to latch in the MOE below the packer (ID could be 5" ID) Tried several things and unable to get latched. 20:00 - 00:00 4.00 FISH P DECOMP POOH 10/5/2006 00:00 - 01:30 1.50 FISH P DECOMP POOH with Spear BHA 01:30 - 03:30 2.00 FISH P DECOMP LD accelerator jars, stand 12 DC's back in derrick. Left 4" Itco Spear in the hole. OD = 4" grapple and 3-1/4" body OD. Length = 2.60 ft. The 2-3/8" reg thread was damaged alone with the no go plate. The plate had rotating and compression damage caused by the top of the fish. The spear is either set in the top of the fish or it has fallen down below the MOE to the 3-1/2" cross-over sub. Called for another BOT spear. Printed: 11/6/2006 8:05:35 AM BP EXPLORATION Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Event Name: REENTER+COMPLETE Start: 9/24/2006 Contractor Name: Rig Release: Rig Name: Rig Number: Date !From - To I Hours I Task I Code I NPT I Phase 10/5/2006 i 03:30 - 06:30 I 3.001 FISH I P 06:30 - 07:45 I 1.251 FISH I P 07:45 - 14:10 6.42 FISH P 14:10 - 15:00 0.83 FISH P 15:00 - 21:30 6.50 ~ FISH I P 21:30 - 00:00 I 2.501 FISH I P 10/6/2006 00:00 - 01:00 1.00 CLEAN P 01:00 - 02:30 1.50 CLEAN P 02:30 - 03:00 0.50 CLEAN P 03:00 - 03:45 0.75 CLEAN P 03:45 - 04:45 1.00 CLEAN P 04:45 - 13:00 I 8.251 CLEAN I P 13:00 - 16:00 3.00 CLEAN P 16:00 - 18:00 2.00 CLEAN P 18:00 - 18:30 0.50 CLEAN P 18:30 - 00:00 5.50 CLEAN P 10/7/2006 00:00 - 04:30 4.50 CLEAN P 04:30 - 06:00 1.50 CLEAN P 06:00 - 06:25 0.42 CLEAN P 06:25 - 10:15 3.83 CLEAN P 10:15 - 11:30 1.25 CLEAN P 11:30 - 15:05 3.58 CLEAN P 15:05 - 15:20 0.25 WHIP P 15:20 - 16:00 0.67 WHIP P 16:00 - 17:30 1.50 WHIP P 17:30 - 18:30 1.00 WHIP P 18:30 - 19:30 I 1.00 I WHIP I P 19:30 - 22:00 I 2.50 I WHIP I P 22:00 - 00:00 I 2.001 WHIP I P Page 6 of 30 Spud Date: 6/28/1988 End: Description of Operations DECOMP Wait on tools. De-icing derrick, crown maintenance (lights) and cleaning rig floor. DECOMP MU new Itco spear assy w/ 4.010" catch with solid 5-3/4" OD stop sub DECOMP TIH with collars and DP DECOMP Check wt wo kelly 132k up 108 down. PU kelly break circulation 5bpm 1225psi. Check wts 142k up 114k down. RIH 33' kelly in chk wts -same RIH 34' and tag, continue stack wt and close bumper jars. RIH 36' pp increased to 1600psi pick-up to 152k then quickly dropped back to 142k. Worked several times setting down 35k max. Pressure would increase to 2200psi. So thinking is spear is inside packer down to the stop. Setting down completely is forcing lower swedge connection on to 7" liner. PU and see 4k overpull with 15' kelly in. This we have never seen. We think fish is on. DECOMP TOH with first stand small amount of drag, not a smooth pick-up weight as seen prior to picking up kelly. Continue TOH. SD for 1 hrs at 18:00 for crew change. DECOMP LD accelerators, and stood back 6 stds 4-3/4" DC. Pulled spear to surface and recovered fish. LD and recovered all of the fish DECOMP PJSM and clean rig floor DECOMP CDL at 500 ton miles DECOMP Held PJSM on PU BHA with dual casing scrapers DECOMP Loaded tools into pipe shed. Clean up same. DECOMP PU dual casing scraper BHA RIH with 8 stands 3-1/2" DP. PU 9-5/8" casing scraper and junk baskets DECOMP RIH with 3-1/2" DP from derrick. PU 15 singles. PU kelly. RIH tag bottom at 10392'. DECOMP Circulate 40bbls hi-vis pill to surface ~ 5bpm 1260psi DECOMP Slowdown kelly. Start POOH LDDP DECOMP Crew change with PJSM DECOMP POOH laying down dril pipe. 180 jts 3-1/2" dp layed down at midnight DECOMP Laying down 3-1/2" DP DECOMP PU kelly and service the connection for RD. Stand kelly back and LD DC's DECOMP Service rig and PJSM review LD procedures. DECOMP Continue LD drill collars, lower BHA and DP DECOMP Load out Baker fishing cleanup floor. DECOMP Break down kelly remove from rig. RD tongs and set out. WEXIT PJSM w/ SLB and Nordic crews. Review plan forward and RU procedures. WEXIT RU SLB WEXIT RIH with 5.95" gauge ring to 10,380 ft ELMD. WEXIT RU to run WS. Crew change and PJSM on hazards of PU and running WS. WEXIT Install 3 pip tags in whipstock. RU firing head and SLB running tools. WEXIT RIH with whipstock Tied in and set TOWS at 10,342 ft 3 deg RHS. WEXIT POOH with whipstock eline setting tools. RD SLB and moved Printed: 17/6/2006 6:05:35 AM BP EXPLORATION Page 7 of 30 Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Event Name: REENTER+COMPLETE Contractor Name: Rig Name: Spud Date: 6/28/1988 Start: 9/24/2006 End: Rig Release: Rig Number: Date I From - To I Hours I Task I Code I NPT 10/7/2006 22:00 - 00:00 I 2.00 I WHIP I P 10/8/2006 00:00 - 07:30 I 7.50 CASE P 07:30 - 09:00 1.50 CASE P 09:00 - 09:20 0.33 CASE P 09:20 - 12:30 3.171 CASE P 12:30 - 12:45 I 0.251 CASE I P 12:45 - 18:00 I 5.251 CASE I P 18:00 - 00:00 I 6.00 I CASE I P 10/9/2006 00:00 - 06:00 6.00 CASE P 06:00 - 06:20 0.33 CASE P 06:20 - 13:30 7.171 CASE P 13:30 - 16:00 I 2.501 CASE I P 16:00 - 19:30 I 3.501 CASE P 19:30 - 21:20 I 1.831 CASE I P 21:20 - 21:40 0.33 CASE P 21:40 - 00:00 2.33 CASE P 10/10/2006 00:00 - 00:45 0.75 CASE P 00:45 - 01:30 0.75 CASE P Phase Description of Operations WEXIT off IocationLoading pipe shed with 4-1/2" tubing, cable clamps and jewelry. RUNPRD Load and prep 4-1/2" tubing 245 jts of 4-1/2" 12.6#/ft 13Cr80 Vam Top load and prep in the pipe shed with jewelry RUNPRD RU Doyon csg equip andHES equip. RUNPRD PJSM with all crew members. Assign job tasks, go over hazards, pinch points. Review procedures for MU of VamTop Cr tbg and installation of HES Symphony gauge wire & clamps. RUNPRD Run 4-1/2" 12.6# 13Cr 80 Vam Top completion. Installing 1 Symphony gauge perjoint around collar. Above/below each GLM. RUNPRD Crew changeout. PJSM. Review running procedures and hazards. RUNPRD Continue running 4-1/2" completion string. Torque Turn Vam Top connections with 4440 ft-Ibs Wxtremely high winds coming from east at 60 to 70 knots. Having trouble keeping blocks from swing due to high winds. Run approximately 12 jts per hr due to high winds At 18:00 hrs ran a total of 56 jts 4-1/2" RUNPRD Running 4-1/2" compeltion in high winds Tried several things to speed up the process. Tried putting hand in derrick and the pure velocity of wind to geat to position block vertically above. rotary table. Tried 180" bail and changed Doyon torque tum. After changing the Doyon equipment and installed the longer bails, the running speed inc to 15 jts /hrs even with the 60-70 mph wind gust. 113 jts run at midnight. RUNPRD Running 4-1/2" completion RUNPRD Crew changeout. PJSM review running procedures and hazards. Perofrm morning rig maintenance. RUNPRD Continue running 4-1/2" 12.6# Cr 80 Vam Top completiion MU torque 4440 fUlbs. Installing 1 clamp around each collar f/ Symphony gauge wire. Checking integrity every 5 jts. Clamps in hole: 2232-OTC- over the collar clamps 18-MJ- mid joint half clamps. (16 above/below GLM's , 1 at gauge mandrel, 1 at tbg hanger. RUNPRD MU CIW tbg hanger. MU lower HES Symphony gauge wire pack-off and test to 5000psi / 10 min. Drain BOP stack. Land hanger 25'-6" in. Visually check -OK. MU TIW valve and circulation hose. Unland tbg hanger and close annular. RUNPRD Circulate 580 bbls 140deg seawater treated with corrosion inhibitor at 3 bpm. RUNPRD Landed tubing in well head, RILDS (OK) Dropped Rod/Ball RU to PT tubing and set packer RUNPRD Held PJSM on setting and PT tubing and IA RUNPRD RU kill line to PT and set packer at 9,780 ft PT tubing to 3800 psi for 30 min Final = 3750 psi charted. Bleed down tubing to 1600 psi. PT IA to 3600 psi for 30 minand charted. final pressure 3700 psi. Released tubing pressure and sheared DCR valve at 2500 ft. Circulated 10 bbl OIK RUNPRD RU to freeze protect the wellbore RUNPRD LRS pumped 175 bbl diesel down IA and FP the wellbore from Printed: 11/6/2006 8:05:35 AM BP EXPLORATION Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Event Name: REENTER+COMPLETE Start: 9/24/2006 Contractor Name: Rig Release: Rig Name: Rig Number: Date ~ From - To Hours Task Code NPT Phase --__l _____ _- -_ ._._ 10/10/2006 00:45 - 01:30 0.75 CASE P RUNPRD 01:30 - 03:00 1.50 CASE P RUNPRD 03:00 - 06:00 3.00 WHSUR P RUNPRD 06:00 - 06:15 0.25 WHSUR P 06:15 - 08:00 1.75 WHSUR P 08:00 - 08:15 0.25 WHSUR P 10/11/2006 10/12/2006 08:15 - 10:15 2.00 WHSUR P 10:15 - 16:00 5.75 WHSUR P 16:00 - 16:45 0.75 WHSUR P 16:45 - 18:00 1.25 W HSUB P 18:00 - 00:00 6.00 W HSUB P 00:00 - 10:00 10.00 BOPSU P 10:00 - 17:30 7.50 BOPSU P 17:30 - 20:00 2.50 BOPSUFI N 20:00 - 21:30 I 1.50 I BOPSUR N 21:30 - 23:00 I 1.50) BOPSUR P RUNPRD RUNPRD RUNPRD RUNPRD RUNPRD RUNPRD RUNPRD RUNPRD WEXIT WEXIT RREP IWEXIT RREP IWEXIT WEXIT Page 8 of 30 Spud Date: 6!28/1988 End: Description of Operations 2,500 ft (DCR vaave). Cir 10 bbl to confirm shear (ok) RD LRS. Installed BPV and PT below to 500 psi, (OK) ND Riser and hang in the cellar. Installed lift plate on 13-5/8" annular PJSM flowing crew change and after rig maintenance. Finished ND BOP stack PJSM on plan forward for moving the BOP stack using the 980 load and Nordic loader Trolly back BOP skid using Veco's and Nordic fork lift Clean cellar and with CIW and HES installed 13-5/8" X 4-1/16" adaptor flange with HES symphony external pigtail . PT seal to 5,000 psi 30 min (ok) Retested pig tail and showed 3430 psi BHP. May have remove symphony pig tail to NU Lower riser to ground, MU 7-1/16" BOP stand Installing new pit liner Spot 7-1/16" BOPs outside cellar. Hold PJSM. Rig up slings and snubbing lines. NU BOPS kill & choke lines, riser and related equipment. Take on 500 bbls 2 ppb biozan fluid in pits. RU BOP NU BOPs RU DSM lubricator and pulled BPV and installed TWC for PT BOP's Well on vacume on tubing and IA. The P&A might have broken down for what ever reason. PT BOP as per PTD 3,500/250 psi. AOGCC John Spaulding wavered witnessing BOP test. Installed 3-1/2" test joint in variables and was unable to PT. PUH and found the test joint crimped. Installed companion flange on tree wing valve. Drained BOP stack to inspect variables ram and body. Remove and inspect variable ram bodies. Found they may not be 3-1/2". Call SLB for a replacement as Nordic spares are too difficult to access from Deadhorse. Replacement vbrs look identical to problem set. Not sure what problem is. Proper 3-1/2" x 2-3/8" test joint not available. Call AOGCC, J Spaulding, for permission to perform vbr test once a proper test joint is made, sometime tomorrow. Install VBRs and test door seals to 3500 psi. RU DSM lubricator. Pull two way check valve. Lay down lubricator. 23:00 - 00:00 1.00 STWHIP P WEXIT Wait on slickline unit. 00:00 - 00:15 0.25 FISH P RUNCMP Wait on slickline unit to finish on Z-19. 00:15 - 01:30 1.25 FISH P RUNCMP Spot SLB slickline unit. Hold PJSM with Nordic &SLB. Discuss job details. 01:30 - 10:30 9.00 FISH P RUNCMP Revcovered ball and rod. Pull DCR from GLM #1. Set dummy in GLM #1. Pull RHC plug from tbg tail. Failed to rrecover RHC, redress tool. RIH to retrieve RHC plug Latched and jar on RHC to retrieve same. Pulled tight coming out of hole. Retrieved RHC and RIH with 3.8" GR/JB 10:30 - 11:30 1.00 STWHIP P WEXIT PJSM on RD Wireline. RD same 11:30 - 12:30 1.00 STWHIP P WEXIT PU injector and stab on stuffing box and secure. Install hydraulic lines. 12:30 - 12:50 0.33 STWHIP P WEXIT PJSM on stabbing CT and pulling across pipe shed. Review SOP's on stabbing procedures. Review hazards and mitigated Printed: 11/6/2006 8:05:35 AM BP EXPLORATION Page 9 of 30 Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Spud Date: 6/28/1988 Event Name: REENTER+COMPLETE Start: 9/24/2006 End: Contractor Name: Rig Release: Rig Name: Rig Number: Date From - To Hours Task 'Code NPT Phase ' Description of Operations 10/12/2006 12:30-12:50 0.33 STWHIP P WEXIT hazards. 12:50 - 13:45 0.92 STWHIP P WEXIT Pull CT across pipe shed and stab CT 13:45 - 16:15 2.50 STW HIP P WEXIT Dress CT and wire. RU to load CT, set counter and lined out Nordic's reel house manifold. Removed BHI GYRO Tool. Won't work with tool string. It has never been a part of tool string. Removed Gyro tool from BHA. Loaded CT with 60.7 bbls of 2 ppb biozan. Rev circulated 20 minutes at 4 bpm and 3000 psi for slack management 16:15 - 17:15 1.00 STWHIP P WEXIT PT the reel house manifold to inner reel valve. Something is leaking. 17:15 - 20:15 3.00 STWHIP N RREP WEXIT Track down leaks in pump room and reel house. 20:15 - 21:00 0.75 STWHIP P WEXIT Pressure test reel valve again. Held 250 and 3500 psi for 10 minutes. 21:00 - 21:30 0.50 STWHIP P WEXIT PU injector. Cut 26' of coil. 21:30 - 00:00 2.50 STWHIP P WEXIT MU a-coil connector. Pull test same. Make up electrical connections. Test same. 10/13/2006 00:00 - 00:30 0.50 STWHIP P WEXIT Finish making up a-coil head. Pressure test connector. 00:30 - 01:30 1.00 BOPSU P PROD1 Pressure test 3-1/2" x 2-3/8" VBRs. This completes BOP test as per AOGCC. Displace forward through coil while testing VBRs. 01:30 - 02:30 1.00 STWHIP P WEXIT MU window milling BHA. Stab coil. Surface test tools. Get on well. 02:30 - 04:30 2.00 STWHIP P WEXIT Run in hole with EDC open. Take diesel rtns to tiger tank. 44k# up wt at 10,000'. 04:30 - 05:15 0.75 STWHIP P WEXIT Log initial GR tie in from 10,200'. Subtract 3' correction. 05:15 - 05:50 0.58 STWHIP P WEXIT Tag whipstock at 10,348' (pinch point). Started window at 10,348.40 ft 05:50 - 12:15 6.42 STWHIP P WEXIT Milling window. Started at 10,348.40 ft. Time drill at 6min/ft Op = 2.51 bpm at 1990 psi P off btm = 1875 psi at 2.5 bpm Vp = 405 bbl 12:15 - 13:45 1.50 STWHIP P WEXIT Stalled at 10,355.2 ft (6.8 ft down tray) PU and restart mill. Having some trouble. Drilling rathole from 10.355 ft to 10, 365 ft. Displacing well to new Flowpro 3% LT and 10ppb KlaGard. 13:45 - 14:50 1.08 STWHIP P WEXIT TD rathole at 10365 ft, reaming whipstock area and open hole section Dry tagged at 10,365 ft 14:50 - 17:40 2.83 STWHIP P WEXIT POOH to PU build section BHA 17:40 - 18:15 0.58 STWHIP P WEXIT OOH, flow check and hold PJSM on BHA handling 18:15 - 19:00 0.75 STWHIP P WEXIT Lay down motor and mills. Mill gauged at 3.79" and the string reamer at 3.78". 19:00 - 20:00 1.00 DRILL P PROD1 MU build asssembly with 3.8 deg mtr and HTC bi-center bit. 20:00 - 22:15 2.25 DRILL P PROD1 Run in hole. Test MW D at 300'. Continue to run in hole. Circulate through open EDC to help shear new flo pro. 22:15 - 22:45 0.50 DRILL P PROD1 Log gr tie in from 10,270'. Subtract 3' correction. Orient to HS. Run through window, smooth. 43k# up wt off btm. Tag btm at 10,364'. 22:45 - 23:15 0.50 DRILL P PROD1 Drill ahead from 10,364'. 2700 psi fs at 2.58 in/out. 23:15 - 00:00 0.75 DRILL N DFAL PROD1 Baker reports that the DGS has failed. Reboot tool and try the usual procedures. Tool still not working. Pull out of hole to replace DGS. 10/14/2006 00:00 - 01:15 1.25 DRILL N DFAL PROD1 Continue to POH for failed DGS tool. Hold PJSM. 01:15 - 02:30 1.25 DRILL N DFAL PROD1 At surface. Get off well. Unstab coil. LD MWD tools. Printed: 11/6/2006 8:05:35 AM BP EXPLORATION Page 10 of 30 Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Spud Date: 6/28/1988 Event Name: REENTER+COMPLETE Start: 9/24/2006 End: Contractor Name: Rig Release: Rig Name: Rig Number: Date From - To Hours Task Cade NPT Phase 10/14/2006 02:30 - 06:45 4.25 DRILL N DFAL PRODi 06:45 - 08:00 1.25 DRILL N DFAL PROD1 08:00 - 09:00 1.00 DRILL N DFAL PROD1 09:00 - 11:20 2.33 DRILL N DFAL PROD1 11:20 - 12:00 0.67 DRILL N DFAL PROD1 12:00 - 15:00 3.00 DRILL P PROD1 15:00 - 15:25 0.42 DRILL P PROD1 15:25 - 18:00 2.58 DRILL P PROD1 18:00 - 18:45 0.75 DRILL P PROD1 18:45 - 21:00 2.25 DRILL P PROD1 21:00 - 22:45 1.75 DRILL P PROD1 22:45 - 23:15 0.50 DRILL P PROD1 23:15 - 00:00 0.75 DRILL P PROD1 10/15/2006 00:00 - 03:00 3.00 DRILL P PROD1 03:00 - 03:30 0.50 DRILL P PROD1 03:30 - 05:00 1.50 DRILL P PROD1 05:00 - 07:11 2.18 DRILL P PROD1 07:11 - 07:50 0.65 DRILL P PROD1 07:50 - 08:40 0.83 DRILL P PROD1 Description of Operations MU tool string with replacement DGS. Run complete set of diagnostic tests. Same problem with second tool. Suspect firm ware loaded for gyro data test may be at fault. Attempt to re-load firm ware. Having trouble doing this. Call Anchorage for assistance. Crew change. Still working on BHI Software. Ordered new BHI Power Comms from Anchorage and troubleshooting software. PJSM, PU BHA after finding software problem and Power Comm problem. Stabbed injector head RIH with EDC open and circ at 2.00 bpm to 10, 265 ft Tie-in Corrected -5 ft, SD pump and close EDC, orient TF to HS, RIH and tagged bottom at 10,376 ft Taking some WOB at 10,365 ft W/R 10,365 ft to 10, 3767ft. Drilling Build Section in Zone IV from 10, 377 ft to 10,464 ft (87 ft) HSTF Op = 2.53 / 2.50 bpm at 2775 psi off btm WOB: / ROP = 3-4 kf / 20-70 fph Delta P: 300-500 psi; BHP/EDC =.4,408 psi / 9.74 ppg Vp = 423 bbl's Drilling Build Section in Zone IV from 10, 464 ft to HSTF Op = 2.53 / 2.50 bpm at 2775 psi off btm WOB: / ROP = 3-4 kf 120-70 fph Delta P: 200-350psi; BHP/EDC = 4,447 psi / 9.79 ppg Vp = 426 bbl's At 10,480 ft projected EOC at 93 deg POOH. Flow check with BHA at surface. PJSM. Get off well. Unstab coil. LD BHA. MU lateral BHA with USMPR res tool and 1.2 deg mtr w/ HTC rebuild bi-center bit. Replace SLB collector on reel swivel. Test all components. Stab coil. Get on well. Run in hole. Log gr tie in from 10,270'. Subtract 10' correction. Log MADD pass down to get resistivity data from 10,370' to 10,479'. 2900 psi fs at 2.42 bpm in/out. Drill ahead from 10,480'. 2800 psi fs at 2.58 in/out. 100-250 DPSI. DHWOB: 2k-3.5k#. IA/OA/PVT: 0/117/417 bbls. BHP/ECD: 4408/9.67 ppg. ROP: 50-80 fph. INC/AZM/TF: 92.2/246.0/90-106R. Wiper trip to window. Hole smooth. Drill ahead from 10,650'. 2800 psi fs at 2.58 in/out. 100-250 DPSI. DHWOB: 2k-3.5k#. IA/OA/PVT: 0/117/417 bbls. BHP/ECD: 4408/9.67 ppg. Continue to hold 95 deg incl. Drilling Pilot Lateral Section in Zone IV from 10, 725 ft TF 90-75R Op = 2.66 / 2.60 bpm at 2750 psi off btm WOB: / ROP = 3-4 kf / 10-30 fph Delta P: 200-350psi; BHP/EDC = 4,430 psi / 9.79 ppg Vp = 445 bbl's Gained 21 bbl of fluid in last 12 hrs which could be the results of Z-33a injection profile Wiper trip to base of WS Drilling Pilot Lateral Section in Zone IV from 10, 801 ft TF 1120-140R Printed: 17/6/2006 8:05:35 AM BP EXPLORATION Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Event Name: REENTER+COMPLETE Start: 9/24/2006 Contractor Name: Rig Release: Rig Name: Rig Number: Date I From - To (Hours I Task I Code i NPT I Phase 10/15/2006 07:50 - 08:40 0.831 DRILL P 08:40 - 08:55 0.25 DRILL P 08:55 - 09:50 0.92 DRILL P 09:50 - 10:05 0.25 ~ DRILL ~ P 10:05 - 10:15 I 0.171 DRILL I P 10:15 - 10:25 0.17 DRILL P 10:25 - 11:25 1.00 DRILL P 11:25 - 12:25 1.00 DRILL P 12:25 - 14:46 2.35 DRILL P 14:46 - 16:00 1.23 DRILL P 16:00 - 19:15 3.25 DRILL P 19:15 - 20:45 20:45 - 00:00 1.501 DRILL I P 3.251 DRILL P PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 Page i 1 of 30 Spud Date: 6/28/1988 End: Description of Operations Op = 2.66 / 2.60 bpm at 2750 psi off btm WOB: / ROP = 3-4 kf / 10-50 fph Delta P: 200-350psi; BHP/EDC = 4,430 psi / 9.79 ppg Vp = 443 bbl's PU and orient TF to LS to ensure no missing the polgan Drilling Pilot Lateral Section in Zone IV from 10, 801 ft TF ~ 120E Op = 2.66 / 2.70 bpm at 2650 psi off btm WOB: / ROP = 3-5 kf / 10-50 fph Delta P: 200-450psi; BHP/EDC = 4,428 psi / 9.79 ppg Vp = 440 bbl's Wiper trip to see if the GR tool is working GR dropped from 290 to 87 API units, its working. Drilling in lots of non-productive shale Drilling Pilot Lateral Section in Zone IV from 10, 883 ft TF ~ 145E Looking for the exit of this silstone/shale. GR still at 293 API unit Op = 2.66 / 2.70 bpm at 2650 psi off btm WOB: / ROP = 3-5 kf / 50-90 fph Delta P: 200-450psi; BHP/EDC = 4,428 psi / 9.79 ppg Vp = 443 bbl's Increased KlaGard Conc from 10 ppb to 12 ppb by adding 2 drums Orient TF to R-side while PUH on CT Drilling Pilot Lateral in shale from 10, 893 ft TF ~ 105-90 R Dropped down to 85 deg before leveling out Op = 2.66 / 2.70 bpm at 2600 psi off btm WOB: / ROP = 3-5 kf / 60 fph Delta P: 200-450psi; BHP/EDC = 4,450 psi / 9.79 ppg Vp = 444 bbl's. Ordered out KlaGard to inc. conc. to 12ppb. Got out 293 API shale at 10,886 ft This sand is not the same as the one above. Loaded pipe shed with 102 jts of liner Wiper trip (clean wiper trip) Drilling Pilot Lateral in shale from 10, 950 ft TF ~ 50-110R. Op = 2.55 / 2.54bpm at 2600 psi off btm 3050 psi on btm WOB: / ROP = 3-5 kf / 90 fph Delta P: 450psi; BHP/EDC = 4,450 psi / 9.79 ppg Vp = 438 bbl's. Some stacking, PU and pulled to 68k before coming free. Wiper trip, lots of stacking at 11, 081 ftTie-in at RA Maker at 10,353 ft. Correct +7 ft to 10,405 ft, RIH Clean wiper trip Drilling Pilot Lateral from 11,082 ft TF @ 50-110R. Op = 2.55 / 2.54bpm at 2655 psi off btm 3050 psi on btm WOB: / ROP = 2-4.5 kf / 90 fph Delta P: +400 psi; BHP/EDC = 4,450 psi / 9.81 ppg Vp = 439 bbl's. PU and toook survey off btm at 11087 ft Ratty drilling at 11,150 ft, could be the conglomerate ZIII look at samples Wiper trip to tbg tail at 10,079'. Mtr work at 10,835'. RIH. Set down at 10,735. PU and run through ok. See minor bobble while RIH at 10,835'. Hole basically smooth and in good shape. Drill ahead from 11,237'. 3000 psi fs at 2.51 in/out. 100-250 Printed: 11/6/2006 8:05:35 AM BP EXPLORATION Page 12 of 30 Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Spud Date: 6/28/1988 Event Name: REENTER+COMPLETE Start: 9/24/2006 End: Contractor Name: Rig Release: Rig Name: Rig Number: Date ~ From - To Hours Task Code NPT Phase ~ Description of Operations 10/15/2006 20:45 - 00:00 3.25 DRILL P PRODi dpsi. DHWOB: 3k-4k#. IA/OA/PVT: 32/314/429 bbls. BHP/ECD: 4378/9.66 ppg. INC/AZM/TF: 88.05/322.2/1208. 10/16/2006 00:00 - 01:30 1.50 DRILL P PROD1 Make wiper trip to 10,350'. Several set downs and bobbles. Backreamed each. Overall, the hole is in good condition. 01:30 - 03:30 2.00 DRILL P PROD1 Drilling Pilot Lateral from 11,400'. 2950 psi fs at 2.62 in/out. 03:30 - 05:00 1.50 DRILL P PROD1 05:00 - 06:30 1.50 DRILL P PROD1 06:30 - 06:50 I 0.331 DRILL I N I SFAL ~ PRODi 06:50 - 10:00 3.171 DRILL ~ P 10:00 - 12:00 I 2.001 DRILL I P 12:00 - 14:00 14:00 - 14:15 14:15 - 16:00 16:00 - 17:45 17:45 - 18:00 18:00 - 18:30 18:30 - 20:15 20:15 - 22:00 22:00 - 00:00 10/17/2006 00:00-01:00 2.00 DRILL N 0.25 DRILL N 1.75 DRILL N 1.75 DRILL N 0.25 DRILL N 0.50 DRILL N 1.75 DRILL N 1.75 DRILL N 2.00 DRILL N 1.00 DRILL N PROD1 PROD1 DFAL PROD1 DFAL PROD1 DFAL PROD1 DFAL PROD1 DFAL PROD1 DFAL PROD1 DFAL PRODi DFAL PROD1 DFAL PROD1 DFAL PROD1 100-300 dpsi. DHWOB: 22k-4.5k#. INC/AZM/TF: 72.5/354/120L. ROP: 50-80 fph. Continue to drop towards Zone 3. Make wiper trip to the window. A few bobbles, hole in good condition. Drill ahead from 11,550'. at 100 L TF in Zone VI Dropping hole angle Op = 2.57 / 2.58 bpm at 2650 psi off btm WOB: / ROP = 3-5 kf / 70-80 fph Delta P: 200-450psi; BHP/EDC = 4,585 psi / 9.79 ppg Vp = 404 bbl's Leak in hardline ain reel house occurred. SD pump, open baker Choke and informed Nordic of their problem. Fixed hardline and work CT seal on union from mud pump failed. Repaired and PT to 4600 psi, OK Open Baker choke Break circulation. No rig down time. Drill ahead from 11,550'. at 20- 100 L TF in Zone VI Dropping hole angle Op = 2.57 / 2.58 bpm at 2650 psi off btm WOB: / ROP = 3-5 kf / 70-80 fph Delta P: 200-450psi; BHP/EDC = 4,585 psi / 9.79 ppg Vp = 400/398 bbl's Refer to Remark Section on Reportable Spill at 06:30 hrs Wiper trip after drilling 150 ft Pulled a little at 11285 ft. 11,200 ft10,830 ft. 10720 ft and 10, 480 ft(EOC). SD pump at base of WS. PUH open EDC and POH to TT at 10, 082 ft RIH at 100fpm to surge flowrate. Tie in at 10,265 ft + 2.5 ft. SD pump, closed EDC and orient TF to HS TF. Status 2 Failed Hall sensor (the EDC piston status is unknown at surface) POOH due to failed EDC PJSM on BHA handling. Also review Rig Evaculation Procedures. Check flow, unstab injector, LD BHA check bit Bit OK, Changed out packoff and installed encoder on level wind Change out EDC RIH. Log gr tie in. Subtract 10' correction. RIH. Orient to go through window. Orienter not working. Try everything possible from surface. HOT still not orienting. Pull out of hole to change HOT. Stop at 100'. Get off well. POH and inspect coil for flat spots. Found 35% wall loss about 7' above connector. Will need to cut and re-head. LD BHA. Change out problem orienter. Hold PJSM. RU coil cutter. Cut 100' of coil. Re-head a-coil. Test same. ..Continue to re-head a-coil. Pull and pressure test. Test a-line. Printed: 11/6/2006 8:05:35 AM BP EXPLORATION Page 13 of 30 Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Spud Date: 6/28/1988 Event Name: REENTER+COMPLETE Start: 9/24/2006 End: Contractor Name: Rig Release: Rig Name: Rig Number: Date From - To Hours Task Code NPT Phase 10/17/2006 01:00 - 02:00 1.00 DRILL N DFAL PROD1 02:00 - 03:45 1.75 DRILL N DFAL PROD1 03:45 - 04:15 0.50 DRILL N DFAL PROD1 04:15 - 05:30 1.25 DRILL P PROD1 05:30 - 10:15 4.75 DRILL P PROD1 10:15 -13:00 2.75 DRILL N DPRB PROD1 13:00 - 16:00 3.00 DRILL P PRODi 16:00 - 18:00 2.00 STKOH P PROD1 18:00 - 18:30 0.50 STKOH P PROD1 18:30 - 19:00 0.50 STKOH P PROD1 19:00 - 22:00 3.00 STKOH P PROD1 22:00 - 00:00 2.00 STKOH P PROD1 10/18/2006 00:00 - 04:30 4.50 STKOH P PROD1 04:30 - 05:50 1.33 STKOH P PROD1 05:50 - 06:15 0.42 STKOH P PRODi Description of Operations Make up Inteq tools with replacement orienter. Stab coil. Test tools. Get on well. Run in hole Log gr tie in from 10,280'. Subtract 11' correction. Orient. Run through window. Increase circ rate. Run to bottom. Had some stacking problems from 11150 ft to 11, 250 ft. Took several attempts to work through. Ratty hole from 11,600 ft to 11,700 ft Worked through and tagged bottom at 11, 700 ft Drill ahead from 11,700'. at 100 L TF in Zone VI Dropping hole angle Op = 2.45 / 2.46 bpm at 2800 psi off btm WOB: / ROP = 3-5 kf / 70-80 fph Delta P: 200-450psi; BHP/EDC = 4,585 psi / 10.18 ppg Vp = 344 bbl's. Lost 60 bbl of fluid since POOH yesterday at 11,700 ft Having trouble getting WOB. PU for wiper trip. Pulled tight at 11,620 ft11, 500 ft, 11,410 and pulled up 70k at 11220 ft. Working tight hole at 11,220 ft, No movement either up or down and no returns PU to 75k and down wt at -5k. The water at 11, 200 is probably the problem PU on annulus to 300 psi and started to get movement on BHA. Cir through CT at 0.5 born and regain circulation RIH 10 ft and fumed around. PUH and worked BHA free, PUH and inc flowrate to 1.5 bpm. Pulled tight in hot shale between 10990 ft to 10670 ft Above WS and open EDC POOH to look at bit motor and talk with town on plan forward. LD BHA, Inspect Bit. Decision made to OHST at 10630'. No cmt plugback required. BHA#16 - PU HCC R60ST and 2.0 deg motor. Crew change. PJSM for MU of BHA. PU CoilTrak tools. Verify motor bend (2.0 deg) and offset. RIH w/ open EDC pumping at 0.8 bpm. Tie in above window; -7ft correction. Tag at 10,438'. Tag at 10,442'. Tag repeatedly, than made it through pumping 2.3 bpm and moving at 30 Wmin. Run in clean to 10,700'. Work pipe below sidetrack point with toolface opposite of drilled toolface to ensure brass cap is off. Stack weight at 10743'. Start new mud in the hole. Orient to 170 deg ROHS toolface. Trough up from 10,630' to 10,610' at 30 fph, 2.75 bpm. New mud around. Trough down 10,610' to 10,630' at 22 fph, 2.75 bpm. Showing departure at NBI (-3 deg). Mud swap complete. Trough up to 10595' to ensure sufficient trough length. Trough down from 10,600' to 10,630' at 30 fph. Start ST ~ 10630' w/ 170R. Time drill 0.1'/6min to 10631'. Time Drill 0.1'/3min to 10,633'. Drill ahead at 12fph to 10640 then increase speed to 25fph. Observe inclination drop with MWD tools. Drill to 10654' while rolling to a 90R toolface and then HS to set up for the start of lateral. Backream with right and left tool face. Conduct a kick while drilling drill. POOH for lateral BHA and openhole was clean Printed: 11/6/2006 6:05:35 AM BP EXPLORATION Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Event Name: REENTER+COMPLETE Start: Contractor Name: Rig Release: Rig Name: Rig Number: Date I From - To Hours Task Code ~ NPT Phase i 10/18/2006 06:15 - 08:00 1.75 STKOH P PROD1 08:00 - 08:30 0.50 STKOH P PROD1 08:30 - 08:45 0.25 BOPSU P PROD1 08:45 - 10:30 1.75 DRILL P PRODi 10:30 - 12:40 2.17 DRILL P PROD1 12:40 - 13:30 0.83 DRILL N SFAL PROD1 13:30 - 14:00 0.50 DRILL P PROD1 14:00 - 15:30 1.50 DRILL N SFAL PRODi 15:30 - 16:25 I 0.921 DRILL I P 16:25 - 17:10 I 0.751 DRILL I P 17:10 - 17:50 0.67 DRILL P 17:50 - 18:00 0.17 DRILL P 18:00 - 22:00 I 4.001 DRILL I P 22:00 - 22:30 0.50 DRILL P 22:30 - 23:00 0.50 DRILL P 23:00 -23:30 0.50 DRILL N 23:30 - 00:00 0.50 DRILL P 10/19/2006 100:00 - 03:00 I 3.001 DRILL I P PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 DPRB PROD1 PROD1 PROD1 03:00 - 05:00 I 2.001 DRILL I P I I PROD1 05:00 - 05:40 0.67 DRILL P PRODi 05:40 - 07:00 1.33 DRILL P PROD1 07:00 - 07:20 0.33 DRILL N DFAL PROD1 07:20 - 09:10 1.83 DRILL N DFAL PROD1 09:10 - 10:00 I 0.831 DRILL I N I DFAL I PRODi 9/24/2006 Page f 4 of 30 Spud Date: 6/28/1988 End: Description of Operations POOH circ thru EDC 2.6/2300 LD sidetrack BHA Function test BOP rams as part of bi-weekly BOPE test MU lateral assy w/ HYC bi bit on 1.2 deg motor w/ resistivity RIH w/ BHA #17 circ thru EDC 1.0/1800 At about 10200', SWS has an e-counter problem-the depth is not tracking the running speed (this is usually caused by electrical interference). Do the usual checks, then shut down a rig generator and find that it works normally, add the second generator and okay too Log tie-in down from 10270' at min pump, corr -30' Begin wiper to TD. After bringing pump up to rate, found that the same problem was occurring. Park above window and let SWS ET investigate. Appears to be electrical interference from somewhere. As in the past, ET ran jumper from injector encoder to ops cab and counter works like it should .. . Wiper to TD. Set down numerous times at 10383'. Had to ream at 3'/min at reduced pump from 10383-10480' Ream 10626-TD at 2.0/2230 at DTF at 2-5'/mines/ no wt loss, minor dill incr. Found TD at 10655'. Backream at 908 2.3/2600 at 3'/min w/ minor overpull at 10645'. Ream back to TD at 2.3/25001358 at 2.5'/min while logging missing res data PVT 339 Drill from 2.6/2850/458 to 10670' and res tool quit. Getting intermittent signal. Decide to drill for a while. Drill to 10684' and suspect it may be short at reel due to voltage changes Wiper to window and tool started working. Was clean thru sidetrack area. Head back to TD Drill 2.6/3170/908/2700# to 10,800' at -25fph with intermittent singal that would be very difficult to troubleshoot. Drill ahead with good surveys and some small gaps in the log. ROP slowed to 10'/hr. Make wiper to window. Wiper trip to window. Log 10630' - 10675' on the way back in the hole to fill in a gap in the RES data. Set down at 10710'. We are in the plugback hole. Pick-up to 10,560'. Re-log 10630' - 10675'. Verify we are in the main wellbore, continue in hole to TD Drill 2.55/2870/908/4200# to 10802'. Slow ROP (-5fph), good weight transfer. Break through hard spot at 10,803'. Ran into another hard spot at 10805' to 10806'. Drill 2.55/2930/908/2000#/30fph. The hard spot deflected the bit up to 92 deg. Have to drill at 1508 to drop back to 8740ss, INC at 85 deg. Drill 2.55/2900/3900# holding 8740'ss. Hard drilling at 10910'-10918'. Drill to 10950'. Wiper trip to the window. Clean hole. Drill from 10950' 2.52/2940/758 w/ 100-400 psi dill, 1.5-4k wob at 88 deg to 10980' where the orientor quit working Wiper to window was clean POOH circ thru EDC 2.5/2300. Plugged off 'out' MM w/ cuttings at 2000'. Circa to surface, then did a 200' jig LD drilling BHA. Found orientor works fine in one direction, but Printed: 11/6/2006 8:05:35 AM BP EXPLORATION Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Event Name: REENTER+COMPLETE . Start: 9/24/2006 Contractor Name: Rig Release: Rig Name: Rig Number: Date From - To Hours Task Code NPT Phase 10/19/2006 09:10 - 10:00 0.83 DRILL N DFAL ~ PRODi 10:00 - 13:45 I 3.751 DRILL I P I I PROD1 13:45 - 14:35 0.83 DRILL N DFAL PROD1 14:35 - 16:25 1.83 DRILL N DFAL PROD1 16:25 - 16:40 0.25 DRILL N DFAL PROD1 16:40 - 17:15 0.58 DRILL N DFAL PROD1 17:15 - 17:45 i 0.501 DRILL I N i DFAL I PROD1 17:45 - 18:40 0.92 DRILL N DFAL PROD1 18:40 - 20:00 1.33 DRILL P PRODi 20:00 - 23:00 I 3.001 DRILL I N 1 DFAL I PROD1 23:00 - 00:00 I 1.001 DRILL I N I DFAL I PROD1 10/20/2006 00:00 - 00:45 0.75 DRILL N DFAL PROD1 00:45 - 02:40 1.92 DRILL N DFAL PROD1 02:40 - 02:55 0.25 DRILL N DFAL PROD1 02:55 - 04:00 1.08 DRILL N DFAL PROD1 04:00 - 04:20 0.33 DRILL N DFAL PROD1 04:20 - 07:30 3.17 DRILL P PROD1 07:30 - 09:15 I 1.751 DRILL I P I I PROD1 Page 15 of 30 Spud Date: 6/28/1988 End: Description of Operations needs PC commands to function right in the other direction. Will keep it available and will run the backup that is on location while expedite delivery of the other backup from Anchorage. Bit had no wear, minor chips on gauge, and was BU PVT 238 Cut off CTC. Pump slack back, then cut 120' as part of SWS chrome management plan. Install CTC, head up BHI. PT 35k, 3600 psi ` MU drilling BHA w/ 1.2 deg motor RIH w! BHA #18 circ thru EDC 0.85/1220 while weight up mud system from 8.6 to 9.1 ppg Log tie-in down, Corr -8.5' RIH thru window, clean. One setdown at 10379'. Precautionary ream at 10'/min and 2.2 bpm w/ minor wt loss and MW spots. RIH thru OH sidetrack area, clean at 2.2 bpm, 20'/min Continue wiper in hole and set down at 10705'. Initial pickups were clean, but started losing ground and having up to 15k overpulls. Slow ream at 2'/min at reduced rate of 2.2 bpm and finally cleaned up (GR shows hot spot 10685-700'). Now have 9.1+ in/out Continue cautious wiper to TD from 10710'. Set down at 10805'. Pick up w/15k over and ream back through. Clean remainder of hole to TD. Drill with 2.6/3530/2700#/40fph to 11027. GR is maxing out when on bottom. The new DGS is suspected to be the problem. Precautionary ream from 10810' to 10700', hole in good shape. Trip to pick up the DGS used on the last run. POOH for failed GR. Precautionary ream OHST area 10630' - 10590' at 1358. Hole clean to the window. Overpull at the window, suspect cuttings build up, RIH and circulate clean, pull back thru clean. Open EDC above window and circulate out of hole 2.8/2950psi. Perform safety meeting for laying down BHA while tripping. Jog pipe 200' at surface, only flushed out a few extra cuttings. Lay down BHA, swap out DGS. motor was tight, bit graded 1,1 minor chiped cutter on the wing, balled up with one plugged jet on the nose will rerun. MU BHA #19, new DGS, rerun HYC bi bit. RIH pumping at 0.5 bpm tie-in log down. correction -9tt Run thru window clean, set down at 10380 and again at 10388. Ream down at 2.2 bpm and 10'/min. Clean past the OHST at 20fpm and 1.2bpm. Set down at 10699', Ream down at 2fpm/2.2 bpm to 10715'. Clean the rest of way to TD. log missing GR section 10975-TD Free spin 3250 psi. Begin planned slow drop from 8720' TVD to 8870' TVD while drill with 2.6/3600/908 to 11120' and see resistivity change to high water/hot shale at 11070' Perform wiper to window while weight up from 9.1 to 9.6#. Also need to discuss geology since this shale is about 25' deeper than in the pilot hole. Had numerous overpulls w/ MW while PUH at 10'/min. Wiper back to TD wasn't too bad and the last 100' was clean Printed: 11/6/2006 8:05:35 AM BP EXPLORATION Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Event Name: REENTER+COMPLETE Start: 9/24/2006 Contractor Name: Rig Release: Rig Name: Rig Number: Date From - To Hours ~ Task I Code NPT Phase 10/20/2006 09:15 - 11:00 1.75 ~ DRILL {I P~ PROD1 11:00 - 14:00 I 3.001 DRILL I P I I PRODi 14:00 -.14:40 I 0.671 DRILL I P I I PROD1 14:40 - 15:10 0.501 DRILL ~ P I I PROD1 15:10 - 20:10 5.00 DRILL P PROD1 20:10- 21:00 0.83 DRILL P PRODi 21:00 - 21:20 0.33 DRILL P PROD1 21:20 - 22:30 1.17 DRILL P PRODi 22:30 - 23:15 0.751 DRILL N ~ SFAL ~ PROD1 23:15 - 23:40 I 0.421 DRILL I P I I PROD1 23:40 - 00:00 0.331 DRILL ~ N ~ SFAL ~ PROD1 10/21/2006 100:00 - 02:30 I 2.501 DRILL ~ N ~ SFAL ~ PROD1 02:30 - 03:10 0.67 DRILL N SFAL PROD1 03:10 - 04:10 1.00 DRILL P PRODi 04:10 - 06:15 2.081 DRILL N PROD1 06:15 - 10:30 I 4.251 DRILL P I PROD1 Page 16 of 30 Spud Date: 6/28/1988 End: Description of Operations Drill from 1 1 1 20-200' 2.65/3400/908 w/ 100-400 psi dill, 0.5-3.Ok wob w/ 11 ppg ECD and initial 9.3# returns 100' wiper from 11200' was clean w/ 9.6# mud thruout system, PVT 285 Drill from 11200' 2.45/3250/1208 and continue slow drop to landing by 11600'. Took 30 min to get by 11213' then get drilling break and drill low api sand to 11300' w/ NB incl ~ 78 deg Wiper to window was clean w/ minor overpulls at 10901', 10791', 10730', 10477' Wiper to TD was clean except for MW at 10434' and 10799' PVT 273 Drill from 11300' 2.4/3300/1108 w/ 1-4k wob, 200-600 psi dill, w/ 11.07 ECD using 9.6-mud while continuing slow drop of 78 deg NBI to 42P? Res continues to show wet and mud shows no sign of oil. ROP tapered to 20fph and 2300# WOB. Wiper to tubing tail was clean w/ minor overpull at 10900'. tie-in log down. Corr +2' W iper to TD. Setdown at 10399', p/u and ream through. OA at 420 psi -bleed to 100 psi. Setdown at 10698', and 10800'. Inteq depth not updating, work problem while run it the hole. Inteq cannot get data feed from injector. Switch to acquire WITS data from SLB. This should work at drilling speeds but will not update quick enough during wipers -not so. Try another fix that involves removing the recorded ROP, it is working when running as a tie-in log. The logs will be merged later. Drill from 11,450' 2.5/3600/30L w/ 3400 wob, 40fph, 400 psi dill, w/ 10.95 ECD. Troubleshoot problem and find the depth encoder is bad. Pull to 11,441' and circulate while changing the Inteq depth encoder. Changing encoder is taking much longer than anticipated. Work pipe to 60k but no depth at all. Shut down pumps to relax ECD while finishing up the encoder work. Pull free at 55k. Found the encoder had a stripped out lovejoy connection but there is still a depth problem. Work pipe while Inteq continue to troubleshoot software problems. Swap back to WITS and take data as a tie-in. Tag 9ff high. Log GR spike at 11390' to confirm depth. Make +10' correction. Log missing data from 11440' - TD. Drill from 11469' with 2.35/3450/60L 3.2k wob, 11.13ppg ECD, FS 3200psi. Drilled to11493. There are a couple of hot GR areas that the Geo needs to make sense o#. NBI is 72 deg and we want to make sure we land in the target sand. Make wiper to window while geo looks at correlations. Minor overpull at 10,900'. Setdown at 10584' and 10900'. Rest of hole was clean Drill from 11493' 2.45/3450/80L w/ 100-400 psi dill, 1-4k wob w/ 10.7 ECD at 74 deg following planned drop to the target. Slow going in general. Getting quick stalls and high vibration which is out of spec. Work w/ wob, pump rate, etc w/ no real improvement. Elect to trip to check BHA Printed: 11/6/2006 8:05:35 AM BP EXPLORATION Operations Summary ..Report Legal Well Name: Z-01 Common Well Name: Z-01 Event Name: REENTER+COMPLETE Start: 9/24/2006 Contractor Name: Rig Release: Rig Name: Rig Number: Date f From - To ( Hours Task Code NPT Phase 10/21/2006 10:30 - 11:20 0.83 DRILL P PROD1 11:20 - 13:00 1.67 DRILL P PROD1 13:00 - 14:50 1.83 DRILL P PROD1 14:50 - 19:20 4.50 DRILL N SFAL PROD1 19:20 - 20:35 1.25 DRILL P PROD1 20:35 - 20:50 0.25 DRILL P PROD1 20:50 - 21:50 1.00 DRILL P PROD1 21:50 - 00:00 2.17 DRILL P PROD1 10/22/2006 100:00 - 02:30 I 2.501 DRILL P PROD1 02:30 - 04:30 I 2.001 DRILL I P I I PROD1 04:30 - 07:00 I 2.501 DRILL P PROD1 07:00 - 07:50 0.83 DRILL P PROD1 07:50 - 08:45 0.92 DRILL P PROD1 08:45 - 11:30 2.75 DRILL P PROD1 11:30 - 12:30 1.00 DRILL N STUC PROD1 12:30 - 13:30 I 1.001 DRILL I P I I PROD1 13:30 - 13:50 I 0.331 DRILL I P I I PROD1 13:50 - 14:20 0.50 DRILL P PROD1 14:20 - 15:30 1.17 DRILL P PROD1 15:30 - 16:50 1.33 DRILL P PRODi 16:50 - 17:05 0.25 DRILL P PROD1 17:05 - 17:55 0.83 DRILL P PROD1 Page 17 of 30 Spud Date: 6/28/1988 End: Description of Operations Wiper to window was clean except for OP at 10900' POOH to check BHA LD BHA. Bit was 1-2-I and BU w/ one plugged nozzle w/ stator rubber. Changed bit, motor RIH w/ BHA #20, HCC rebuilt bi-bit. Had depth control problems w/ BHI encoder. Problems found with coupling binding up. Swap Encoder and change out coupling. Yo-yo pipe to work on encoder calibration. Depth control issues should be a thing of the past.... Fixed depth problem. RIH pumping at 0.6bpm. Log tie-in down. -5' correction. Minior setdowns at 10586' , 10915, 11500'. Drill from 11568' 2.45/3300/70U w/ 200-400 dill, 1.5-3k wob w/11.4 ECD at 79deg. Ratty drilling from 11,580'. The RES tool is flat lined. Got the go ahead from town to drill thru this shale (41 N?) before tripping. Geos want the RES tool for drilling the sand package below. RES tool came alive-cross our fingers that it hangs in there. Drill from 11,630' 2.5/3270/90U w/ 300-500 dill, 1500# wob w/11.1 ECD at 79deg. Ratty drilling 11662' - 11680'. Currently 84 deg and the interpretation is that we are below the 41 N. The plan is to level off in the sand package below. Wiper trip to window. Pumping 2.5 bpm, CT weight 38k. Overpulls and MW at 11400' - 11370'. Overpull and MW and a majority of the high GR areas to 10700'. RIH clean to 10732'. setdowns at 10732', 10908', and 11073'. Start new mud down the hole. Old mud has 1090' and 2% solids. Drill from 11,720' 2.5/3400/30L w/ 200-400 dill, 1000# wob w/11.4 ECD at 85 deg. Swap to right at 11800'. Drill to 11850' Wiper to window 2.5/3200 was clean w/ no OP's! Wiper to TD 2.2/2800 w/ set downs at 10900, 11280' Drill from 11850' 2.5/3200/1508 w/ fresh mud and 91 deg at bit at 8882'TVD. Begin slow drop to 88 deg to find a better sand. Get into a probable clay streak at 11960' and spend 30 min trying to make hole w/ slightly sticky pickups PVT 368 Stuck CT on pickup at 11963' while pull to 60k. SD pump and wait 20 min. Pull again to 82k w/o movement. Can move orientor okay. W OB does not change, so are stuck at the top of the BHA or CT. Pull a bind at 80k and circ 2.2/2760 w/ full returns at 11.0 ECD while wo crude. NBI=90 deg. After 20 min of circ, pull free at 85k Slow wiper to window w/ overpulls in the normal areas, plus a few more Pull thru window, clean. Pump 2.5/3200 to EOT to get solids out of 7". Inspect minor dings on CT while RIH to logging depth Log tie-in down from 10250', corr -14' Wiper to TD w/ setdown at 10900' Drill from 11963' and back in a sand. Drill to 12000'. Did an 200' wiper and still sticky at 11963'. Work to clean it up for 15 min Drill from 12000 to 12013' and lost circ at 12010' ~ W iper while check loss rate at 2.4/0.7/2800. Had to work to get Printed: 17/6/2006 8:05:35 AM BP EXPLORATION Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Event Name: REENTER+COMPLETE Start: 9/24/2006 Contractor Name: Rig Release: Rig Name: Rig Number: Date ~ From - To i Hours Task .Code I NPT Phase i _ _- -- _ -- ~ -- ------- 10/22/2006 ~ 17:05 - 17:55 ~ 0.83 ~ DRILL P ~ ~ PROD1 17:55 - 20:00 I 2.081 DRILL I N I DPRB I PROD1 20:00 - 22:00 I 2.001 DRILL I N I DPRB I PRODi 22:00 - 00:00 I 2.001 DRILL I N I DPRB I PROD1 10/23/2006 100:00 - 02:00 I 2.001 DRILL I N I DPRB I PROD1 02:00 - 02:30 0.50 DRILL N DPRB PROD1 02:30 - 04:00 1.50 DRILL N DPRB PROD1 04:00 - 04:15 0.25 DRILL N DPRB PROD1 04:15 - 05:10 0.92 DRILL P PROD1 05:10 - 06:15 I 1.081 DRILL I P I I PROD1 06:15 - 06:35 I 0.331 DRILL I P I I PRODi 06:35 - 07:45 1.171 DRILL I N I DPRB PROD1 07:45 - 12:30 I 4.751 DRILL I N I DPRB I PROD1 Page 18 of 30 Spud Date: 6/28/1988 End: Description of Operations uphole past 11963'. Very sticky at 11963', losses probably not helping. Continue wiper to window while order mud and discuss. Lots of overpull areas, worst it's been, but probably due to losses now Park at 10330' (above window). Open EDC. Wait on orders and fluid. Periodically move pipe and fluid in coil. Fill across the top every 30 mins, static loss rate 15 bph. ECD 8.8 ppg. POOH to lay down RES tool. Fill hole across the top. Lost 30 bbls on trip out. Pop off lubricator and visually inspect the last 100' of coil. Minor wear 10' above coil connector (OD 2.355") but not enough to warrant cutting coil. W e will continue to monitor on future trips. PJSM for handling the BHA while tripping out of the hole. Lay down BHA and remove the RES tool. The motor is tight and bit is in good shape (2/1) -rerun both. Meanwhile spot an empty lowboy under the reel house and take measurements. It is much easier to visualize with the trailer in place. Both Veco and SLB personnel agree setting the reel at an angle on the trailer on the truck and pulling forward a couple feet so the door can close might work. We will need a crane on location to position the reel properly. MU BHA #21. Losses remain at 15 bph. RIH with BHA#2l while keeping hole full Re-run motor and HCC bi-bit. 490 bbl of mud is on location. MI is building another 580 bbls of mud. Log tie-in down +7' correction. RIH pumping 1.5 bpm /zero returns. Setdown at 11078'. Bring rate up to 2.2 in / 0.4 out. Set down at 11210', 11455', 11659', 11802'. Tag bottom with 2.2 in / 1.5 out. Looks like we may have sweeped some solids into the loss zone on the trip in. Clean both ways past sticky area at 11963'. Re-log 11995 to TD. 80 bbl of losses in the last hour. Drill from 12013' 2.42 in/1.36 ouU2930/40R 2-4k wob, 10.84 ECD. PU clean past loss zone, 40k coil weight. Drill from 12041' 2.44 in / 1.08 ouU 2750 / 2-4k wob 10.64 ECD to 12104' 2.4/0.8 100' wiper while tighten up leaking connection at reel swivel. Restart pump and head to TD w/ no returns. Start drilling and get minimal returns back 2.4/0.35/2700. Appears that packing off is occurring above the loss zone. Getting low on fluid and vac truck is 1.5 hrs away PVT 140 Wiper to window while wo mud. After pulling above 11950', loss rate improved to 2.4/0.65. Continue wiper to window at 1.6/0.3/1850. Have trouble getting by 11715-600'. Incr pump rate. Swivel started leaking again and appears to have a blown gasket. Continue POH to window w/minimal pump to keep hole full, but is difficult to get by shales w/o motor. Leak continued to get worse so SD pump on the CT and fill hole w/ charge pump down the BS. Pull clean from 11200' and back thru window PVT 86 Park at 10300'. Replace gasket in leaking reel swivel connection. PT at 4400 psi. Circ thru bit at 0.7/1500 for 4 bbls w/o returns. SI retums ~ Printed: 11/6/2006 8:05:35 AM BP EXPLORATION Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Event Name: REENTER+COMPLETE Start: 9/24/2006 Contractor Name: Rig Release: Rig Name: Rig Number: Date I From - To I Hours i Task Code I NPT I Phase 10/23/2006 107:45 - 12:30 I 4.751 DRILL I N I DPRB I PROD1 12:30 - 12:40 I 0.171 DRILL I P I I PROD1 12:40 - 14:05 I 1.421 DRILL I P I I PROD1 14:05 - 15:25 1.331 DRILL P PROD1 15:25 - 15:50 I 0.421 DRILL I P I (PROD1 15:50 - 16:05 ~ 0.25 ~ DRILL ~ P I ~ PROD1 16:05 - 17:10 I 1.081 DRILL I P I I PROD1 17:10 - 19:15 2.081 DRILL I P I PROD1 19:15 - 19:50 I 0.581. DRILL P PRODi 19:50 - 23:15 I 3.421 DRILL P I I PROD1 Page 19 of 30 Spud Date: 6/28/1988 End: Description of Operations choke. Pump down CT and move pipe occasionally while wo mud. Fill hole down BS occasionally at 10 bph loss rate Log tie-in, corr +1.5'. Have 340 bbls in pits, 290 bbls just arrived. MI mixing another 580 bbls Start pump in OH at 2.0/2600 w/o returns. No set downs until 11215' area. Increase pump rate to 2.5/3000 w/ 0.3 bpm returns and take some timeltrys to clean out. Continue in hole to the next one at 11270', 11340', 11440'. After 11560', hole was relatively clean and returns increased to 0.6 bpm and continued increasing until 11980'/ 1.85 bpm, but by 12105' were 1.3 bpm and upon tagging TD were 1.0 bpm PVT 482 Drill from tag at 12102' 2.35/1.08/3000/808 w/ 100-300 psi dill w/ 2-3.5k wob at 94 deg, ECD 10.7 in what acts like rubble. Took another drink at 12111' where loss rate went to 0.1 bpm for about a minute, then slowly regained original 1.0 bpm. At 12130', level out in preparation to begin drop to Zone 2 TD 2.37/0.9/1358 w/100-300 psi dill w/ 3-4.5k wob at 93 deg. See hot GR at 12105'. Drills like sand, returns are not steady, but vary between 0.7-1.2 bpm PVT 355 Temporarily lost full returns at 12150' w/ no abnormal drilling events. Assume packing off above loss zones. PUH 41 k and begin wiper to 11900' while begin to get returns back at 0.3 bpm. Above 121.11' returns increased to 1.1 bprn, decreased to 0.45 bpm at 12010' and decreased to 0.25 bpm by 11900'. Continue wiper after began to have overpulls at 11910'. Started pulling tighter and losing more returns, having to cycle to get further up hole. Continued pulling up hole to 11670' and eliminated overpulls, but returns were still only 0.3 bpm Wiper back in hole 2.37/0.4 was clean to TD. Retums started increasing at 11880'/0.6, 11920'/0.75, 12010'/0.95, 12040'/0.4, 12090'/ 1.0, 12150'/1.0 PVT 280 Drill from 12150' in a rubble/shale? to 12161' 2.38/0.85/3000/1208 Drill from 12161' in slower, but steady drilling 2.32/0.6/2900. This may be the base of the 41 N. NBI is now 88 deg and are planning to hold 90 deg here 2.35/0.3/2900/908 PVT 160 Full vac w/ 290 bbls just arrives Drill from 12176' 2.50/0.5/3000/908 w/ 88 deg on NBI. Slow drilling at 12188', short trip to 11930 was clean. Run back to bottom 1.1/0.0 with set down at 12130'. Drilling break at 12196'. PVT 231 Drill from 12196' 2.4/0.45/3200/1208 2-4k wob, 10.8 ECD. Pulled heavy off bottom at 12210' so short trip to 12,000'. Zero returns when back on bottom drilling. Concerned with packing off so time for wiper back to window. TD 12220' PVT 160. Wiper to window. Drop rate at 11900' to save mud, rates = 1.2/0.1. MW 11650' - 11525'. PVT 125 Full vac w/ 290 bbl arrived on location. Clean to the window with minor motor work at 11650'. MW on the trip in at 10,450', set downs at the normal shale intervals. Returns finally came back when we tripped past 12120' (1.1/0.5)?? It was just a spurt and didn't last long. Set down at 12160' with sticky pickups -clean up 12160' to TD, before going back to drilling. PVT 232. Another 290 bbl on location. Printed: 11/6/2006 6:05:35 AM BP EXPLORATION Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Event Name: REENTER+COMPLETE Start: 9/24/2006 Contractor Name: Rig Release: Rig Name: Rig Number: Date From - To ~ Hours Task ~ Code NPT Phase 10/23/2006 23:15 - 00:00 ~ 0.75 ~ DRILL ~ P ~ PROD1 10/24/2006 00:00 - 01:00 1.00 DRILL P PROD1 01:00 - 01:35 0.58 DRILL P PROD1 01:35 - 03:30 1.921 DRILL I P i PROD1 03:30 - 06:45 3.251 DRILL I P PROD1 06:45 - 07:30 I 0.751 DRILL I P I I PROD1 07:30 - 10:30 I 3.001 DRILL I P I I PROD1 10:30 - 11:40 1.17 DRILL P PROD1 11:40 - 13:30 1.83 DRILL P PROD1 13:30 - 13:50 0.33 DRILL P PROD1 13:50 - 14:40 0.83 DRILL P PROD1 14:40 - 15:45 I 1.081 DRILL I P I I PROD1 15:45 - 17:10 i 1.421 DRILL I P I I PROD1 17:10 - 18:00 I 0.831 DRILL I P I I PROD1 18:00 - 19:40 1.671 DRILL I P PROD1 Page 20 of 30 Spud Date: 6/28/1988 End: Description of Operations Drill from 12220' 2.4/0.0/2900/1408 2-3k wob 10.55 ECD. Seem to be drilling decent sand. NBI 84 deg. Plan is to try and level off in this sand. PVT 339 Drill from 12275' 2.4/0.01/2900/60L to 12306'. PVT 231 Short trip to clean hole and check on 12160' - 12190' shale area. Pull 20k over from 12090' to 11980'. Assume it's because of cuttings build up. Only a few minor wt bobbles across the shales on the way back to TD. PVT 163 A Vac truck with 290 bbl of mud is pulling on location. Another truck is 45 mins away. Drill from 12306' 2.4/.03/90L 2-4k wob NBI=89 deg. The plan is to hold this angle to 12350' then start the drop into Zone 3. Slow drilling at 12,310' - 12,323'. Zone 3?? Made 5' in the last hour. PVT 153 POH to check bit. There were a few minor overpulls from 12165'- 11900'. Pulled up to 65k at 11324' and lost the trickle of returns we had. RIH and pull thru clean. Smooth pulling the rest of the way to the window. PVT 56. Vac w/ 290 bbl is pulling on location. Pull to surface filling across the top. Lost 23 bbls in cased hole over normal fill PVT 267 LD drilling assy. Bit was 7-3-cored on the nose and balled up w/ one PN. Motor was okay, but elected to LD for hours Cut off CTC and 100' of CT for chrome management. Install new CTC. PT 37k, 4000 psi. Rehead BHI Fill hole and taking 10 bph static MU BHA w/ RR bicenter bit and res tool RIH w/ BHA #22 circ thru bit 0.3/1000 w/o returns Log tie-in down from 10270', corr -5' Wiper to TD 2.38/3120 was clean to 11215'. Took about 20 tries to get by and after about 5 tries started getting returns which increased to 1.5 bpm at times. Had to drill thru it, and then returns went to zero Tag up on the next shale at 11273' and spend 15 minutes to get thru. See 11335', then relatively clean to 12165', although saw loss zones at 12010' and 12111' Work to get thru 12165' 2.12/0.4. Lots of stalls, overpulls, less than 0.5 bpm returns. Several 50-100' wipers. Try to drill it and get to 12181'. Temporarily give up and wiper back to 11950 to log MAD pass before res tool dies (has been intermittent) PVT 387 Log missing resistivity data down from 12000' bit depth at 300'/hr 2.35/0.25/3250. Logged down to 12,180'. Pick up and got bit stuck. Worked free. Work to get back to bottom. 1.7 / 0.2 bpm, stack wt at 12,185', Bit may be balled up. BHA acts like it is packed off. Stacking wt and overpull up to 66K at 12,170', Work pipe, No returns, Not able to get below 12,185'. Overpull to 60K, orient TF to Left and break free, orient to right. Back ream slow, Pulling better at 12,140', Back ream at 7 fpm, 1.9 / 0.3 bpm. Back ream with 38K up wt at 12,030'. Printed: 11/6/2006 8:05:35 AM BP EXPLORATION Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Event Name: REENTER+COMPLETE Start: 9/24/2006 Contractor Name: Rig Release: Rig Name: Rig Number: Date From - To Hours Task !, Code NPT Phase -- - - . __ 10/24/2006 19:40 - 21:30 ~ 1.83 DRILL ~ N STUC PROD1 21:30 - 22:15 I 0.751 DRILL P 22:15 - 00:00 10/25/2006 00:00-00:15 00:15 - 01:00 01:00 - 07:00 07:00 - 08:15 08:15 - 09:00 09:00 - 11:00 11:00 - 11:20 11:20 - 13:15 1.75 DRILL P 0.25 DRILL P 0.75 DRILL P 6.00 BOPSU P 1.25 DRILL P 0.75 DRILL P 2.00 DRILL P 0.33 DRILL P 1.92 DRILL P 13:15 - 13:45 0.50 DRILL P 13:45 - 16:15 2.50 LCR P 16:15 - 16:50 0.58 LCR P 16:50 - 17:10 0.33 LCR P PROD1 Page 21 of 30 Spud Date: 6/28/1988 End: Description of Operations Overpull at 11,990'. Work pipe up and down, pulled to 70K. 2.0/ 0.1 bpm, no returns to clean BHA. Stack 25K, not able to go down, stuck at 11,990'. Bullhead down backside at 0.8 bpm and pop free. RIH to 12090' free, POH at 10 fpm at 42K up wt. POH to 11600'. Swap to normal circ. POH at 30 fpm while circ 1.1 / 0.3 bpm. POH clean to window. PROD1 POH while circ across the top to fill hole. PROD1 SAFETY MEETING. Review procedure, hazards and mitigation for laying out drilling BHA. PROD1 -Lay out drilling BHA. Bit had 1 plugged port on side, bit was balled with white clay. PROD1 Pressure /Function test BOPE. Test witness waived by AOGCC inspecter, Jeff Jones. Fill hole w/ 25 bbls PROD1 MU drilling BHA w/ 3.75" DS49 bit and w/o res tool. Stab onto well PROD1 Open EDC and circ at surface while WOO Receive orders and give crew information/discussion meeting PROD1 RIH, circ thru EDC getting partial retums 0.3/0.2/900 PROD1 Log tie-in down from 10270', corr -8' PROD1 RIH thru window, clean. Perform wiper to TD at 2.1/0.3/2530/DTF. Set down in shale at 10585'. Took several tries to get thru. OH sidetrack was clean. See 10900' and all the other shales. 11215' and 11273' took a minimal amount of tries to get thru. Set down at big loss zone at 12010' and returns increased to 1.0 bpm. Work thru then set down at 12027' and returns increased to 1.2 bpm. PU was normal at 39.8k. Drill thru it. Continue wiper in hole 2.12/1.05/2640 to 12093' and getting. ratty and losing wt-deep enough, but now have 1.05 bpm returns PRODi Wiper to 11950' 2.1/1.0 was clean while conduct prejob mtg. Wiper back in hole was clean to 12120' with return rate decreasing after lower loss zone at 12111' to 2.1/0.6/2540. Wiper up hole 41.8k past lower loss zone, 40.5k past upper loss zone, 39.8k at 11900' Remove pump #2 suction screen. Swap to pump #2 PRODi Wiper between 1 1 900-1 21 20' at 5'/min at avg 2.1/0.6 bpm w/ 9.6 FloPro mud while mix MI Form-a Squeeze. Mixed 32 ea 40# sx in 16 bbls of 9.6 premixed NaCI brine. As density/viscosity increased, there is less venturi at hopper so had to mix slower. Let stir for 20 min. Too aired up to weigh it. Continue to recip over 11900-12120' 2.0/0.36 PROD1 Load CT w/ 19 bbls 10.15# Form-A-Squeeze at 2.0/0.35/2600 while continue to recip over 1 1 900-1 21 20' at 5'/min while pumping pill thru MWD, motor and bit. Displace FASO w/ 9.6# FloPro PROD1 At 5 bbls before calculated pill at motor, the out rate started increasing and had 100 psi incr on CTP (FASO was at motor a little early since no temp sensor on MM earlier and density too close to mud wt) with the bit at 12030' and pulling 5'/min at 2.0/0.4. After calculated 2 bbls out of bit, reduced pump rate to 1.6 when returns were up to 0.8 bpm. Incr pulling speed from Printed: 17/6/2006 6:05:35 AM BP EXPLORATION Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Event Name: REENTER+COMPLETE Start: 9/24/2006 Contractor Name: Rig Release: Rig Name: Rig Number: Date From - To ~ Hours Task Code NPT Phase 10/25/2006 16:50 - 17:10 ~ 0.33 LCR P ~ PROD1 17:10 - 17:30 I 0.331 DRILL I P I I PROD1 17:30 - 19:30 2.001 DRILL I P I I PROD1 19:30 - 20:30 I 1.001 DRILL I P I I PROD1 20:30 - 22:30 2.00 DRILL X WAIT PROD1 22:30 - 00:00 1.50 DRILL C PROD1 10/26/2006 100:00 - 00:20 0.331 DRILL I C PROD1 00:20 - 03:30 I 3.171 DRILL I C I I PROD1 03:30 - 05:00 1 1.501 DRILL X 1 STUC PROD1 05:00 - 06:00 I 1.001 DRILL I X I STUC I PROD1 06:00 - 11:30 I 5.501 DRILL I X I STUC I PROD1 Page 22 of 30 Spud Date: 6/28/1988 End: Description of Operations 5'/min to 30'/min at 12000' w/circ rate at 1.65 bpm and 2-3 bbls above bit. With 10 bbls left gradually closed choke as return came up to 1.2 bpm. Used max 300 psi whp w/ 4 bbls left in CT. Then, slowly bled off whp to zero by WCTOFAS at 11450'. Put 8 bbls into formation, left the rest in the hole. Continue wiper OOH 45'/min at 1.63/1.25 W iper thru open hole was clean until pulled tite at 54k at 11200'. Had to increase rate and backream OOH 2.05/1.75/2900 POOH for next step, circ. 1.9 bpm with 1.5 bpm returns. Slight loss of fluid to formation. Lay out drilling BHA. Got orders to lay in 10 bbl cement plug for open hole sidetrack at 11,000'. SWS cementers not available until 0200. hrs. Make up cementing BHA with SWS CTC, 3 jts, 2-1/16 PH6 and 3.17" big hole nozzle. OAL = 93.59'. Capped end of E-Line with shrink wrap. M/U Cementing BHA with CTC, 3 jts PH6 and big hole nozzle. OAL = 93.59'. RIH with cementing BHA. Circ at 0.5 bpm, 0.9 bpm retums RIH to 10,300', Up wt = 35K, RIH thru window clean. Pull up thru window clean as a check. RIH and sat down wt in shale at 10582'. Increase pump to 2 bpm, sat down at 10582'. Pick up wtih overpull at 10564'. Circ 2.5 bpm with 0.9 bpm returns. Up wt = 35K, pull up to 55K, 60K, and 62K at 10560'. Stop pump and work coil up/down at 10564'. Very small shale on log at 10564'. Circ. at 1 bpm. Pull 65K at 10560', pump 1 bpm with 0.4 bpm returns. Free going in hole. Pull up into ledge each time at 10564'. Pull up to 66K with no change. Coil goes in hole clean each time. Incl = 94 deg at this depth. Bullhead down backside of coil to move fluid past BHA. Pump 1.3 bpm, 900 psi WHP, 300 psi coil press. Pull 64K, 70K, 74K and 80K. Coil is free from 10600-10564'. Very sharp overpull, like pulling into ledge. Clean RIH each time. Line up to circ 20 bbls crude down coil. Free up wt = 38K, Overpull starts at 10565'. Pull to 10556' at 75K up wt. 9' of strech. Pump 20 bbls of crude, 2.1 bpm, .6 bpm retums. Spot 15 bbls crude out nozzle. Work coil to 75K while pumping. Stop pump. Coil stuck. Let crude soak 20 min. Work coil, pop free RIH. Pull up hole 10'. Now working coil from 10535-10565'. Pull 80K and RIH to 36K. Now stuck at 10540'. RIH to 10559', Moving up hole each time. Pull to 10530'. Bullhead down backside to free coil. Well is tight. No infectivity, 1000 psi WHP, slow leakoff. Coil is stuck at 10542'. WHP bled down to 400 psi in 10 min. Pump 0.4 bpm down backside at 1400 psi. Try to work coil downhole. No luck. Open choke and circ down coil 2.2 bpm, 0.3 bpm returns. Pull 80K at 10,530'. RIH to -8K at 10556'. Printed: 11/6/2006 8:05:35 AM BP EXPLORATION Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Event Name: REENTER+COMPLETE Contractor Name: Rig Name: I I Start: 9/24/2006 Rig Release: Rig Number: Date From - To ;Hours Task Code ! NPT I Phase 10/26/2006 106:00 - 11:30 I 5.501 DRILL I X I STUC I PROD1 11:30 - 13:00 I 1.501 DRILL I X I STUC I PROD1 13:00 - 19:00 I 6.00 DRILL I X STUC PROD1 19:00 - 20:30 I 1.501 DRILL I X I STUC I PROD1 20:30 - 22:00 I 1.501 DRILL I X I STUC I PROD1 22:00 - 22:30 I 0.501 FISH I X I STUC I PROD1 22:30 - 00:00 I 1.50 I FISH I X I STUC I PROD? 10/27/2006 100:00 - 01:00 I 1.001 FISH I X I STUC I PROD1 01:00 - 08:00 7.00 FISH I X STUC PROD1 08:00 - 10:00 I 2.001 FISH I X I STUC I PROD1 10:00 - 12:00 ~ 2.00 I FISH ~ X I STUC ~ PROD1 Page 23 of 30 Spud Date: 6/28/1988 End: Description of Operations Park coil at 10544' at free point at 34K. Pump down backside again, pump 1.7 bpm with 1500 psi whp. Work pipe up/down near neutral weight. Pull slow while bullheading to wash backside. Mix and pump 30 bbls MI SAP pill consisting of 6.6 ppb SAP, 6.6 ppb Tannathin w/ a pH of 10.5 mixed in rig water w/ a pill density of 8.7 ppg at 2.75/0.6/2420 and displace w/ 9.6 ppg Flo Pro. Stack max wt down after pill out nozzle. Recip 80k to -10k while get 6.5 bbls of 30 bbls in the annulus. Let soak for 20 min at neutral wt Work CT to 90k max and -12k min occasionally for 1.5 hrs w/ no progress. Try pumping down the BS at 1.5 bpm while down the CT at 0.4 bpm at 1150 psi whp and pulling 90k w/ no movement. Try other tricks like dumping pressure, etc. Meanwhile, SWS gather tools for cut and recover ops Pump 20 bbl crude down coil. Hold 90K up wt. Work pipe up/down with crude in coil. Pump 2 bpm, 0.4 bpm returns. Clean chains on injecter head. Pump down backside at 2.7 bpm at 2700 psi, work pipe up/down. No luck. Spot crude on backside and let soak. Work pipe. 90K/-8K. Nozzle at 10,545'. Pump down coil at 1.8 bpm, work pipe. No luck. Pump down backside at max rate. Work pipe. Press up backside to 2500 psi at 3 bpm, stop pump, pull max and surge backside. No luck. Repeat, no luck. Start Coil cutting procedure. SAFETY MEETING. Review procedure, hazards and mitigation for cutting coil for chemical cut. Well is dead. Pull coil to 45K, 5K over neutral wt. Close upper pipe/slip rams. Slack to zero and pull to 50K. Slips holding. Closed manual lock down on rams. Strip injecter head up 8 ft. Rig up Hot tap and drill hole in coil. Coil was dead. Cut coil 6' above rig floor. Pull stub 4' above cut point to expose E-Line. Make up E-Line clamp and back-up. Pull test. Cut E-Line and stand back injecter head. Pull E-Line up using rig hydraulic tuggers and cable clamps. E-Line was free. Weight of E-Line at start was 1,500#. Pull all of E-Line out of coil filling displacement w/ water. Call out SWS E-Line unit for 0600 hrs. to run chemical cutter to cut coil. Dress CT stub. Install BTT slip-type connector w/ o-rings. Remove blocks from injector and install long bails. PT at 20k. Run in set screws and PT ~ 40k. Install XO's on top of CTC to get to 2" FMC block valve. MU 2" block valve + Y + 3-1/2 Bowen thread union Fill from BS at avg 5 bph w/ 9.6# mud SWS a-line arrive. Spot unit. Discuss job.. Find out that a 1-11/16" (1.6875") chemical cutter is the smallest OD for 2-3/8" Printed: 11/6/2006 8:05:35 AM BP EXPLORATION Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Event Name: REENTER+COMPLETE Contractor Name: Rig Name: I Start: 9/24/2006 Rig Release: Rig Number: Date From - To ~ Hours Task Code NPT ~ Phase _ _ - ------ - _ F_ _ --- _...----- 10/27/2006 10:00 - 12:00 ~ 2.00 FISH X ~ STUC PROD1 12:00 - 14:00 I 2.00 FISH I X I STUC PROD1 14:00 - 14:20 0.33 FISH X STUC PROD1 14:20 - 15:50 1.50 FISH X STUC PROD1 15:50 - 17:50 2.00 I FISH X STUC I PROD1 17:50 - 18:15 0.42 FISH X STUC PROD1 18:15 - 20:30 2.25 FISH X STUC PROD1 20:30 - 21:30 I 1.001 FISH I X I STUC I PROD1 21:30 - 00:00 I 2.50 I FISH I X I STUC I PROD1 10/28/2006 00:00 - 02:30 I 2.501 FISH I X STUC PROD1 02:30 - 05:30 I 3.001 REMCMTC I I PROD1 05:30 - 07:30 2.00 REMCMTC PRODi 07:30 - 12:00 I 4.501 REMCMTC I I PROD1 12:00 - 12:20 0.33 REMCM C PROD1 12:20 - 13:35 1.25 REMCM C PROD1 13:35 - 14:50 1.25 REMCM C PROD1 Page 24 of 30 Spud Date: 6/28/1988 End: Description of Operations CT (1.995" ID) that will guarantee a cut.. The BTT connector is 1.5" ID Cutoff BTT CTC and install SWS slip-type connector x EUE 8rd which has a 1.96" ID and PT ~ 40k. Install XO's and hardware as before to same Bowen union. Drift assy w/ 1-11/16" dummy WO SWS to obtain another packoff to fit our Bowen connection. We have older style Safety mtg re: RU cutter RU SWS chemical cutter and packoff assy on the ground. Raise to floor and stab thru Bowen union RIH w! chemical cutter at 100'/min and clean to tag at 10450' ELMD. PUH 5' and park Wait for wellbore fluids to stabilize while crews changeout Cut coil with chemical cutter, 5' off bottom, 10,350' E-Line depth, which is the same as coiled tubing depth. Good indication of cut coil. POH with cutter. Safety meeting. Review procedure, hazards and mitigation for recovering chemical cutter. Recover chemical cutter BHA. Rig back SWS. Pull on coil with blocks, pulled with steady up wt of 40K. Coil is cut and free. Rig down SWS unit. Cut off 20' of coil to expose 20' of E-Line. Dress both ends of coil for weld on connecter. Thread E-Line into CTC. Welded on CTC. Paint CTC area. Pull test CTC. Pull CTC into injecter chains. Secure rig floor. Stab injecter. Pull CTC onto reel. Check weld on CTC. Fill well across the top while POH with coil. Checked welded CTC once it was on reel. Connection looks good. POH with coil. POH with cut coil. Fill well across the top. Stop at 300'. Pick up injecter. Watch for stub of coil while POH. M/U CTC. Pull test CTC with 30K. Press test coil weld on connecter and coil with 3500 psi. Call out SWS cementers, ask for 20 bbl pumpable. M/U cementing stinger and big hole cementing nozzle for cement job. RIH with cementing BHA circ 0.3/860 getting one half of normal returns. Corr -8' at 10308'. RIH to 10315' while keeping weld on reel, deep enough. Infectivity/circ test 2.52/1.43/2340 WO cementers while circ occasionally at min down CT 0.2/0/450 at 10270' and fill BS every hour Safety mtg re: RU and pump cement RU SWS cementers. Load water and mix cement SWS pump 5 BW. PT 4000. SWS load CT w/ 24 bbls 15.8# G cement w/ 76 ml FL C~? 3:51 TT ~ 1.63/1630. Displace cement w/ 38 bbls biozan. RIH from 10000' to 10315' and park. After getting 3 bbls cement past nozzle and with -1 bbl returned, SI ~ choke and bullhead to openhole at 1.3/238 and watch WHP slowly build to 350 psi and stabliize by 6 bbls out nozzle. Red rate to 1.0 bpm and start PUH 44k at 3-5'/min. Bullhead 10 bbls away, then slowly open choke and lay in the rest to Printed: 11/6/2006 8:05:35 AM BP EXPLORATION Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Event Name: REENTER+COMPLETE Start: 9/24/2006 Contractor Name: Rig Release: Rig Name: Rig Number: Date From-To Hours Task Code; NPT Phase 13:35 - 14:50 1.25 REMCM C PROD1 10/28/2006 14:50 - 16:20 I 1.50 16:20 - 19:00 I 2.67 19:00 - 21:00 I 2.00 ~ REMC 21:00 - 21:30 I 0.50 21:30 - 22:15 0.75 22:15 - 23:20 1.08 23:20 - 01:00 10/29/2006 00:00 - 00:30 00:30 - 02:00 02:00 - 06:00 06:00 - 08:45 08:45 - 09:00 09:00 - 14:00 1.671 REMCMTC 0.50 REMCM C 1.50 REMCM C 4.00 DRILL C 2.75 DRILL C 0.25 DRILL C 5.00 DRILL C PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 Page 25 of 30 Spud Date: 6/28/1988 End: Description of Operations WCTOC at 10125'. POOH to safety circ 0.7/400 w/ nearly full returns Park at 9800', SD pump, WOC After 30 min fill hole from BS w/ 0.2 bbls. Pump down CT at 0.25/600 to move < 1 bbl fluid then SD pump After 30 min, fill hole from BS w/ 0.2 bbls. Pump down CT at 0.6/800 and had no returns after 4 bbls, SD pump After 20 min, start pump 1.5/1830 and took 2 bbls to get partial returns RIH while circ down CT at 1.64/1.14/1860 w/ biozan at nozzle. RIH to 10215' at 1.64/1.48/1830, but appears 'out' MM is not correct. Blow it down twice. Getting aired up returns. Jet biozan while RIH to 10315' and then chase up hole w/ mud w/ final 2.25/1.91/2100 (needed shorter TT or higher FL). No cement in returns Circ. while waiting for cement /cement test for next batch. circ. at 2.1 bpm with 1.7 bpm returns. Close choke and get infectivity test of 1 bpm, 400 psi whp, 2 bpm, 1150 psi. SAFETY MEETING. Review procedure, hazards and mitigation for pumping second cement pill. Circ. at 0.5 bpm while cementers getting ready. Press test cement line to 4000 psi with 2 bbls water. Stage 15.8 ppg, G Cement. 2.1 bpm, 2300 psi Pump 24.1 bbls cement. Stage 10 bbl water. 1.5 bpm, 1800 psi, Switch to rig pumps. Stage 40 bbl 2# Biozan water. 2.1 bpm, 1100 psi, Close choke at 57 bbls. Cement at nozzle. Squeeze away cement to openhole. 5 bbls cmt out nozzle, 1.2 bpm, 2000 psi SIW HP. 10 bbls cmt out nozzle, 1.2 bpm, 2400 psi SIWHP 15 bbls cmt out nozzle, 0.8 bpm, 2150 psi, open up choke and lay in last 9 bbls of cmt. Lay in cement 1 for 1 in 7" liner. 1 bpm, pull at 27 fpm. Pull to safety at 9400'. WCTOC at 10750'. Close choke. Sqz 5 bbl CMT away. 0.5 bpm, 2000 psi. Stop pump. 2100 psi sqz press. Open choke slow. RIH. Dress off cement to 10,310' at 2.5 bpm with Biozan, 2700 psi, full returns. Wash 7" liner up to tailpipe and back down to 10,310'. Account for 1 hr time change-fall back Wash 7" liner with Biozan from 10,310' to tailpipe. POH while circ at 3.0 bpm. Full returns. Pickle coil for re-use. PJSM for pumping N2 down coil. Slowdown reel with N2. Bleed down coil. Unstab CT from injector and pull end over pipeshed to reel and secure. RD hardline in reelhouse Safety mtg re: reel swap in close proximity to Pad transformers and rig spotted at an angle to normal rig up Spot VECO lowboy under reelhouse. Open Bombay door and Printed: 11/6/2006 8:05:35 AM BP EXPLORATION Page 26 of 30 Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Spud Date: 6/28/1988 Event Name: REENTER+COMPLETE Start: 9/24/2006 End: Contractor Name: Rig Release: Rig Name: Rig Number: Date From - To Hours Task Code i NPT Phase Description. of Operations i 10/29/2006 09:00 - 14:00 5.00 DRILL C PROD1 lower used reel to lowboy and set on trailer at about 70 deg from normal. Move truck forward 10' to close bombay door. Back out trailer and drive to other side of Pad. Remove reel and set on ground w/ Peak 140T crane. Pick new a-CT reel and set onto trailer chocks in same position as previous. Pick old reel and put on empty trailer. Install new reel in reverse order as above. RD 140T crane, trucks and release 14:00 - 19:00 5.00 DRILL C PRODi Prep reel. Install hardline and hook up a-line connectors. Reel has 526k RF 19:00 - 22:00 3.00 DRILL C PROD1 M/U internal coil grapple and pull testa Held PJSM. Pulled coil to injecter head. Cut coil. Meg test E-Line. Good test. 51.2 Ohms 22:00 - 00:00 2.00 DRILL C PROD1 Circ. coil full of FloPro at 1.2 bpm. Perform E-Line slack management. Reverse pump at 3.4 bpm at 4200 psi. 10/30/2006 00:00 - 01:00 1.00 DRILL C PROD1 Reverse Circ at 3.4 bpm, 4200 psi. Cut coil and found E-Line at 32 ft. 01:00 - 03:00 2.00 DRILL C PROD1 M/U SWS CTC. Pull test with 35K. M/U BHI E-Line connecter. Pressure test with 3500 psi. 03:00 - 04:00 1.00 DRILL C PROD1 M/U 3.78" BHI cement milling BHA with mill, string reamer and straight extreme motor. OAL = 54.05'. 04:00 - 06:30 2.50 DRILL C PROD1 RIH with BHA # 25. Circ. at 0.5 bpm while RIH. 06:30 - 06:50 0.33 DRILL C PROD1 Log tie-in down from 10270', corr -4.5' 06:50 - 06:55 0.08 DRILL C PROD1 Wiper in hole to tag at 10338' 06:55 - 08:30 1.58 DRILL C PRODi Drill cement from 10338' 2.45/3450 w/full returns at <20'/hr to 10365' 08:30 - 09:30 1.00 DRILL C PROD1 Backream and ream window area until clean. Had some MW at TOC at 10338' and TOW at 10345' initially. Dry pass both directions was clean 09:30 - 11:30 2.00 DRILL C PROD1 Open EDC. POOH Circ 2.57/2800 11:30 - 12:00 0.50 DRILL C PROD1 LD milling BHA 12:00 - 12:40 . 0.67 DRILL C PROD1 MU drilling BHA 12:40 - 14:20 1.67 DRILL X PROD1 BHI have tool problems (bad test cable, EDC prob, change flow sub, etc) 14:20 - 15:10 0.83 DRILL P PROD1 MU BHA 15:10 - 17:00 1.83 DRILL C PRODi RIH w/ BHA #26 (3.8 deg motor w/ HCC bi bit) 17:00 - 17:30 0.50 DRILL C PROD1 Log tie-in down from 10260', corr -4.5' 17:30 - 17:40 0.17 DRILL C PROD1 RIH thru cement and window, clean. PU 41.5k and start motor at wt loss at 10364'. Ease in hole 17:40 - 19:50 2.17 DRILL C PROD1 Begin drilling build at 10366' 2.44/3300/98. Drilled at 408 TF, 2.5 / 2.5 bpm, 40 fph, 4K WOB. Drilled to 10410'. 19:50 - 21:50 2.00 DRILL C PROD1 Drilled build section, 2.5 / 2.5 bpm, 40 fph, 608 TF, Drilled to 10432'. Orient TF to 908 and drilled to 10,472'. 21:50 - 22:10 0.33 DRILL C PROD1 Wiper trip to window. Clean hole. RIH clean. 22:10 - 00:00 1.83 DRILL C PROD1 Drill build /turn section, 2.5 / 2.5 bpm, 808 TF, 3200-3800 psi, 35 fph ROP. Swap to new FloPro at 10,500'. Drilled to end of turn section at 10,525'. 10/31/2006 00:00 - 03:00 3.00 DRILL C PRODi POH with build BHA. Open EDC below tuing tailpipe. POH. New FloPro to surface. 03:00 - 04:50 1.83 DRILL C PROD1 C/O motor and bit #15. Bit had 3 plugged ports from motor rubber. Bit graded at [1,4,1). Printed: 11/6/2006 6:05:35 AM BP EXPLORATION Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Event Name: REENTER+COMPLETE Contractor Name: Rig Name: Date From - To Hours Task Code NPT 10/31/2006 103:00 - 04:50 I 1.831 DRILL I C 04:50 - 06:40 1.83 DRILL C 06:40 - 07:00 0.33 DRILL C 07:00 - 07:20 0.33 DRILL C 07:20 - 08:25 1.08 DRILL C 08:25 - 11:00 2.581 DRILL C Start: 9/24/2006 Rig Release: Rig Number: Page 27 of 30 Spud Date: 6/28/1988 End: Phase Description of Operations PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 11:00 - 16:30 I 5.501 DRILL X SFAL PROD1 16:30 - 17:45 1.25 DRILL X 17:45 - 21:20 3.58 DRILL C 21:20 - 23:10 1.831 DRILL C 23:10 - 00:00 0.83 DRILL C 11/1/2006 00:00 - 00:10 0.17 DRILL C 00:10 - 04:25 4.25 DRILL C 04:25 - 04:30 0.08 DRILL C 04:30 - 06:40 2.17 DRILL C 06:40 - 08:00 I 1.331 DRILL ( C 08:00 - 11:00 3.00 DRILL C 11:00 - 11:15 0.25 DRILL C 11:15 - 14:45 3.50 DRILL C 14:45 - 14:55 0.17 DRILL C 14:55 - 18:10 3.25 DRILL C PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PRODt PROD1 PRODi PROD1 PRODi Service BHI tools and add RES tool. Adjust new motor to 1.0 deg bend. M/U Bit #16, HCC BC re-build bit. OAL = 78.9'. RIH with Lateral RES BHA #27. Circ. at 0.4 bpm. Log tie-in down from 10270', corr -6' RIH thru window, clean. Wiper to TD 2.0/3050/DTF at 15'/min was clean to tag at 10526' Backream at 2.5/3300/DTF to window, clean Log MAD pass down to tie-in resistivity 0.7/1670/DTF at 150'/hr w/ good slide (25k) thru build Drill from 10526' to 10, 640 ft 2.47/3450/58 w/ NB at 75-83 deg to 10612' where BHI had PC problems Swapped to left side at 10575' Work on BHI PC (surface software?) issues while perform slow wipers between 10500-600'. Can't see TF. Wiper to window and pull thru clean. Park in 7" and circ 0.3/1100 while work to fix problem Wiper back to 10590' was clean. MAD pass to TD at 10,613 ft Drilling Lateral w/ 1 deg motor TF at 120E O = 2.56 / 2.59 bpm at 3430 / 3850 psi WOB = 1-2k ROP = 35 fph Vol pits= 308 bbl's Drilling Lateral w/ 1 deg motor TF at 100E from 10,740 ft O = 2.56 / 2.59 bpm at 3430 / 3850 psi WOB = 1-2k ROP = 35 fph Vol pits= 308 bbl's Mini wiper trip due to stacking Finished wiper trip and tagged TD at 10,789 ft MD Drilling Lateral w/ 1 deg motor. TF at 90-100L from 10,789 ft to 10,890 ft O = 2.62 / 2.63 bpm at 3430 / 3850 psi WOB = 0.5-2k ROP = 30-45 fph Vp= 312 bbl's Mini wiper trip to help in sliding Drilling Lateral w/ 1 deg motor. TF at 90-100L from 10,890 ft O = 2.62 / 2.63 bpm at 3430 / 3800 psi WOB = 0.5-2k ROP = 13-45 fph Vp= 313 bbl's Wiper trip to window. Log tie-in +2.5' RIH tagged with mw at 10610'. PU run thru smooth Continue drilling in 41 N shale WOB 2-3k ROP = 12-15'hr Wiper trip back to 10880'. No problems. Drill ahead f/ 10995' NB inc 81deg dropping angle O = 2.47 / 2.49bpm at 3450psi 2-400psi MW WOB = 3-3.5k ROP +30'/hr Vp = 307bb1s Drilled okay until 11025' then hit suspected shale on top of 41 P. Very slow drilling initially. Gradual increase in ROP to 15'/hr. Short 100' wiper trip. Drill ahead f/ 11072' Printed: 11/6/2006 8:05:35 AM BP EXPLORATION Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Event Name: REENTER+COMPLETE Start: 9/24/2006 Contractor Name: Rig Release: Rig Name: Rig Number: Date I. From - To I Hours i Task I Code I NPT I Phase 11/1/2006 114:55 - 18:10 I 3.251 DRILL IC 18:10 - 21:30 I 3.331 DRILL I C 21:30 - 22:00 0.50 DRILL C 22:00 - 22:45 0.75 BOPSU~#f C 22:45 - 23:00 0.25 DRILL C 23:00 - 00:00 1.00 DRILL C 11/2/2006 00:00 - 01:00 1.00 DRILL C 01:00 - 02:35 1.58 DRILL C 02:35 - 04:35 2.00 DRILL C 04:35 - 05:00 0.42 DRILL C 05:00 - 06:00 I 1.001 DRILL I C 06:00 - 15:50 I 9.831 DRILL I C 15:50 - 20:15 4.42 DRILL C 20:15 - 21:45 1.50 DRILL C 21:45 - 00:00 2.25 DRILL C Page 28 of 30 Spud Date: 6/28/1988 End: Description of Operations Of = 2.60 / 2.62 3550psi WOB = 2-3k ROP = 15'/hr Vp = 300bb1s BU sample from 11077' not showing any conglomerate yet ROP picking up to 15-20'/hr from Held Spill, confined space and pin hole leak in CT table talks meeting today POOH. At 10,335 ft. open EDC and inc Op to 3 bpm. SD pump and flow checked at 300 ft. PUH inspecting CT in 13Cr enviroment after 4 trips Held PJSM and LD BHA. Bit at 2-2 Function test BOP's. After reviewing bit selection with Geologist and emails concering the bit issue drilling in Zone III, PU DS 49 as per Geologist reccommendation with new motor. CT Management. Cut 100 ft 2-3/8" CT. Rehead CTC Installed CTC and cir CT while making ready to re-head Re-heading to UOC. Pull tested CTC to 35k and PT to 3500 psi. RU UOC to BHA RIH to 284 ft and open EDC, RIH Tie-in starting at 10, 255 ft. Corrected - 5 ft, closed EDC and oriented TF to HS RIH and took wt at 10,820 ft, TF 180 deg out, PUH and orient TF. Having trouble getting in the hole with this PDC bit. Reduced Op. Worked through. RIH. Set down at 10,955 ft, PU and worked through to 10988 ft, set down again. Work way to bottom. Tagged bottom at 11,102 ft Drilling lateral section at TF 90R O = 2.62 / 2.63 bpm at 3430 / 3800 psi W OB = 0.5-2k ROP = 20-30 fph Vp= 294 bbl's Vp= @ 1045hrs 286bb1s Pit drill at 1050hrs 15bb1 gain: Nordic alarm caught immediately by Nordic driller. SLB heard Nordic alarm and visually seen on SLB monitor but with no reaction. SLB has all audible alarms off. Relies on visual only. Nordic driller instructed not to communicate with SLB for this test. Talked with SLB driller about importance of communication with others if a pit gain is seen. Investigating what the problem is with no audible alarm on SLB system. Dilled fair 15'/hr to 11239'. Normal ocassionial stalls. Very little drill off now with 3-4k WOB the ROP <5'/hr for last 1/2hr. TOH 45k PU off bottom. Tight between 11040' and 10950'. Worked area f/ 11040'-11030' several times before pulling through at 50k. Motor seemed to stall in this area at 4150psi. Continue TOH with as drilled TF's. Tight at 10808' Pullled above WS. Pulled heavy up to TT. Open EDC and surged 7" POOH LD BHA and change out motor and bit. Scribed TF HS. Pulled Mouse hole in leui of conducting THA on picking up liner while drilling. RU winches to off driller side of rig floor RIH. Held THA concerning PU liner while drilling. Crew working on equipment list and procedures. PROD1 PROD1 PROD1 PRODi PROD1 PRODi PROD1 PROD1 PRODi PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 Printed: 11/6/2006 8:05:35 AM BP EXPLORATION Operations Summary Report Legal Well Name: Z-01 Common Well Name: Z-01 Event Name: REENTER+COMPLETE Contractor Name: Rig Name: i Start: 9/24/2006 Rig Release: Rig Number: Date From - To Hours ~ Task ~ Code NPT f Phase ____ 11/3/2006 00:00 - 00:20 0.33 DRILL C PROD1 00:20 - 00:45 0.42 DRILL C PROD1 00:45 - 02:00 I 1.251 DRILL I X I DPRB I PROD1 02:00 - 03:00 I 1.001 DRILL I X I DPRB I PROD1 03:00 - 04:00 I 1.001 DRILL I X I SFAL I PROD1 04:00 - 05:15 I 1.251 DRILL I X I DPRB I PROD1 05:15 - 06:00 I 0.751 DRILL I X I DPRB I PROD1 06:00 - 08:30 2.50 DRILL X DPRB PROD1 08:30 - 09:00 0.50 DRILL X DPRB PROD1 09:00 - 14:30 5.50 DRILL X DPRB PROD1 14:30 - 15:00 0.50 DRILL X DPRB PROD1 15:00 - 19:00 4.00 X DPRB POST 19:00 - 19:15 0.25 PXA X DPRB ABAN 19:15 - 20:30 1.25 PXA X DPRB ARAN 20:30 - 22:30 2.00 PXA X DPRB ARAN 22:30 - 00:00 I 1.501 PXA I X I DPRB I ABAN 11/4/2006 00:00 - 00:30 0.50 PXA X DPRB ABAN 00:30 - 01:00 0.50 PXA X DPRB ABAN Page 29 of 30 Spud Date: 6/28/1988 End: Description of Operations RIH to 10, 255 ft Tied in and corrected -8 ft, closed EDC and oriented TF to HS. RIH and at 10,370 ft inc Op to 2.5 bpm and RIH. Tagged at 10,397 ft Working at getting past the obstruction at 10,397 ft. Tried several TF from HS to 50R and was tagging hard at 10,397 ft. Called town and conversed with engineer on way forward. Recovered large pieces and well rounded shale from across shaker. RIH, set TF at 45R, reamed out hole as per drilled TF. Reamed from 10,397 to ft 10,403 ft and bit fell into old hole. Inc Op to 2.6 bpm and RIH at 20 fpm. Tagged at 10,850 ft and stopped at 10,960 ft. Unable to pass 10,960 ft. PUH and pulled 70k at 10,960 ft, 10,790 ft and 60 k at 10,580 ft. Pulled above WS and repaired the SLB PLC recording data. Lost circulating pressure and hydraulic % pilot Open EDC and work CT and circ at 3.00 bpm and clean up wellbore. Wait on SLB Elec Tech. Circulate and work on hydraulic control %pilot and circulating pressures on the CTDS display. Computer locked. up while working on hydraulic Tie-in to marker at 10,280 ftCorrected -9 ft. SD pump and closed EDC RIH and tagged again at 10,397 ft, Unable to pass after reaming it out earlier. PUH above WS, open EDC and circulated wellbore clean. Called town engineer and talked about way forward. POOH LD BHA Wait on orders Decision made to P/A well based on very low success probability to cleanout well and then run production liner due to unstable shale sections and other hole problems at 10397' which is directly below window. Remove BHI UOC. Dress end of a-line. Wait on tools. (10jts 2-1/6" tbg etc.) Arrange for seawater, cement etc.. Held PJSM and discussed ops steps and hazards associated with said task PU BHA, stab Injector. RIH with cement nozzle to PA. Stopped at 1400 ft and changed out stripper Stripper totally failed and engerier at CT. Corrected - 8 ft at 10, 250 ft. PU wt at 10,340 ft = 42 k Displace wellbore to 8.5 ppg 100 deg F SW. Circulated 165 bbl SW. and turned fluid to pits. Finish cleaning pits Finish displacing wellbore and cleaning pits. Cir through choke in preparation of infective test. Infective test: Pressured up to 1500 psi and SD. WHP remained contants at 1450 psi. Pressured up to 1,750 psi. 0.6 psi gradient 200 psi in 5 min Pressured up to 2,000 psi 0.67 psi/ft gradient. 1300 psi in 9 min Pressured up again to a WHP 2,500 psi 7.2 psi/ft Broke down 2,500 psi to 1,950 psi WHP. Injecting into formation at a WHP Printed: 11/6/2006 8:05:35 AM BP EXPLORATION Page 30 of 30 Operations Summary Report Legal Well Common W Event Nam Contractor Rig Name: Date Name: Z ell Name: Z e: Name: From - To ~ -01 -01 REENTE Hours R+COM Task PLET Code i E NPT Start Rig Rig Phase Spud Date: 6/28/1988 : 9/24/2006 End: Release: Number: Description of Operations 11/4/2006 00:30 - 01:00 0.50 PXA X DPRB ABAN of 2,100 psi at 0.60 bpm. (0.68 psi/tt). 01:00 - 01:20 0.33 PXA X DPRB ABAN Held PJSM with SLB Cementers and Nordic Crews. 01:20 - 02:40 1.33 PXA X DPRB ABAN SD pump and circulate while waiting on Vac trucks and cementers. Mixed up and sheared 30 bbl 2 ppb biozan. Mixing up 20 bbl 15.8 ppg cement. Parked CT at 10,335 tt 02:40 - 04:20 1.67 PXA X DPRB ARAN Pumped 3 bbl fresh water, PT to 4300 psi, followed by 2 bbls water Batch mix 5 bbl cement 1 tub. Pumped 21 bbl's 15.8 ppg cement. SD and clean cement line. Pumped 23.5 bbl Biozan water at nzl, SW I and bull headed cement at 0.9 bpm at 1,941 psi WHP into open hole. With 15 bbl pumped, open choke, With 13 bbl pumped, Pp increased rapidly from 1890 psi to 2550 psi. Red Op to 0.5 bpm PUH laying in at 1:1 5 bbl (130 ft) cement. RIH with bio at nozzle at fluid ratio of 1:1 to 10,336 tt. Inc Op from 2 to 3 bpm. PUH with SW at nzl. 04:20 - 05:00 0.67 PXA X ABAN POOH chasing cement to suface at 3.00 bpm. Circulating at 1:1. RBIH to 10,330 tt to cir in corrosion inhibitor SW. Cement at surface, transfer to cutting box. POOH laying in corrosion inhibitor. 05:00 - 07:30 2.50 PXA X ABAN POOH laying in corrosion inhibitor 07:30 - 08:00 0.50 PXA X ABAN Remove 200' of a-line from 2-1/8" tbg. 08:00 - 08:45 0.75 PXA X ABAN LD 2-1/8" tbg 08:45 - 09:05 0.33 PXA X ARAN Dress end of a-line. PU 2.375" stinger/nozzle. Stab on injector 09:05 - 09:40 0.58 PXA X ABAN RIH to 2500' 09:40 - 10:50 1.17 PXA X ABAN Wait on diesel 10:50 - 12:30 1.67 PXA X ABAN FP well with 40bbls diesel from 2500' to surface. 12:30 - 13:40 1.17 PXA X ABAN With MV closed blowdown reel to Flowback tank with N2. Bleeddown pressures. 13:40 - 16:00 2.33 RIGD P POST LD stinger BHA. Prep end of coil with internal connector and cable to pull back to reel. Same time cleaning out cutting tank, and last of rig pits. . Clearing pipe shed of unused tubulars. 16:00 - 17:30 1.50 RIGD P POST Unstab coif from injector and pull back onto reel. Standback and secure injector. 17:30 - 17:50 0.33 RIGD P POST Held PJSM on ND BOP's and all associated hazardsND BOP's 17:50 - 23:00 5.17 RIGD P POST ND BOP's and PT tree cap to 5000 psi. 23:00 - 00:00 1.00 RIGD P POST Warm up hydraulics and tires to move off well RIG RELEASED AT 00:00 (midnight) Printed: 11/6/2006 8:05:35 AM FRANK H. MURKOWSKI, GOVERNOR 333 W. T" AVENUE, SUITE 100 ANCHORAGE, ALASKA 99501-3539 PHONE (907) 279-1433 FAX (907) 276-7542 Aras Worthington CT Drilling Engineer BP Exploration (Alaska) Inc. P.O. Box 196612 Anchorage, AK 99519-6612 Re: Prudhoe Bay Field, Prudhoe Oil Pool, Well Name Z-OlA Sundry Number: 306-361 Dear Mr. Worthington: Enclosed is the approved Application for Sundry Fipproval relating to the above referenced well. Please note the conditions of approval set out in the enclosed form. When providing notice for a representative of the C:cmmission to witness any required test, contact the Commission's petroleum field inspector at (907) 659-3607 (pager). As provided in AS 31.05.080, within 20 days after written notice of this decision, or such further time as the Commission grants for good cause shown, a person affected by it may file with the Commission an application for rehearing. A request for rehearing is considered tirnely if it is received by 4:30 PM on the 23rd day following the date of this letter, or the next working day if the 23rd day falls on a holiday or weekend. A person may not appeal a Commission decision to Superior Court unless rehearing has been requested. DATED thi day of November, 2006 Encl. ~~~-o3~s Sincerely, ~ ~ - `~f ~~ STATE OF ALASKA ~~ V ALA OIL AND GAS CONSERVATION COM~ION APPLICATION FOR SUNDRY APPROVAL 20 AAC 25.280 -: 1. T e of Re uest: ~~ .° u `"L ° YP q ^ Abandon ^ Suspend ®Operation Shutdown ^ Perforate ^ Time Extension ^ Alter Casing ^ Repair Well ^ Plug Perforations ^ Stimulate ^ Re-Enter Suspended Well ^ Change Approved Program ^ Pull Tubing ^ Perforate New Pool ^ Waiver ^ Other 2. Operator Name: 4. Current Well Class: 5. Permit To Drill Number BP Exploration (Alaska) Inc. ®Development ^ Explorat ry 206-038 ~ 3. Address: ^ Stratigraphic ^ Service 6. API Number: P.O. Box 196612, Anchorage, Alaska 99519-6612 50-029-21830-01-00 ~ 7. If perforating, closest approach in pool(s) opened by this operation to nearest 8. Well Name and Number: property line where ownership or landownership changes: PBU Z-01A l Spacing Exception Required? ^ Yes ®No 9. Property Designation: 10. KB Elevation (ft): 11. Field /Pool(s): ADL 028245 91.7' Prudhoe Bay Field / Prudhoe Bay Pool 12. PRESENT WELL CONDITION SUM MARY Total Depth MD (ft): Total Depth TVD (ft): Effective Depth MD (ft): Effective Depth TVD (ft): Plugs (measured): Junk (measured): 12240 9189 10336 8767 10336 None sin Len th Size M TVD Burst Colla se tr ctural n o r 11 0 " 11 11 ' Surface 2672' 13-3/8" 2672' 2672' 49 0 2270 Int rm diate 10192' 9-5/8" 10192' 8655' 6870 4760 Prou in Liner 944' 7" 9920' - 10864' 8445' - 9183' 7240 5410 Perforation Depth MD (ft): Perforation Depth TVD (ft): Tubing Size: Tubing Grade: Tubing MD (ft): None None ~ 4-1/2", 12.6# 13Cr80 ^'10100' Packers and SSSV Type: 9-5/8" x 4-1/2" packer Packers and SSSV MD (ft): 9800' ~ 13. Attachments: 14. Well Class after proposed work: ® Description Summary of Proposal ^ BOP Sketch ^ Exploratory ®Development ^ Service ^ Detailed Operations Program 15. Estimated Date for 16. Well Status after proposed work: ~.14/~- Commencin O erations: Novemb 4 006 ^ Oil ^ Gas -~"Rlugged ^ Abandoned 17. Verbal Approval: Da ^ WAG ^ GINJ ^ WINJ ^ WDSPL Commission Representative: 18. I hereby certify that the foregoing is true and correct to the best of my knowledge. Contact Aras Worthington, 564-4102 Printed Name Aras Worthington Title CT Drilling Engineer Prepared By Name/Number: Signature ~t ~ ~( Phone 564-4102 Date Terrie Hubble, 564-4628 Commission Use Onl Sundry Number: ,'JJD~ ,. Conditions of approval: Notify Commission so that a representative may witness ^ Plug Integrity ^ BOP Test ^ Mechanical Integrity Test ^ Location Clearance Other: o o - 4 0 4 . nn Subsequent Form Required: /`Y(7 P VO Ue~ !-vY l 0 ~ / ~ u.t~yK a '~0 -"~S~Yt ~2.P'I/ q-'Cr-^~-S . APPROVED BY ~,/ b ro ~ A roved B : COM STONER THE COMMISSION Date ~f' Form 10-403 Revised 06/2006 "v ~ Submit In Duplicate i BP Prudhoe Bay Z-OlA CTD Sidetrack -Temporary Shutdown of Drilling Operations CTD Sidetrack Summary Three laterals were drilled and all subsequently abandoned in an attempt to drill lateral Z-0l A. All were ~ abandoned due to hole problems (sticky, sloughing shales and clays). The last lateral, Z-OlAPB3, was Drilled to 11,240' MD. The shales fell apart in the well and it was not possible to reach TD or even re- enter the well. We elected to cement back this lateral (Z-OlAPB3) to the window. 15 bbls 15.8ppg cement was pumped into the openhole and the top of cement was left @ 10,336' MD (6' above the top of ~ the whipstock @ 10,342' MD). The tbg was displaced with corrosion inhibited sea water and diesel freeze-protection. BP plans to step back and re-evaluate a plan to drill this well with Coiled Tubing Drilling 6 months to a year from now. r~. _HEAD = 1ATOR = lEV = •LEV = Angle = 'n MD = „1vn = L-80, ID = 12.415" H 2672' Z-01 A ~ [ Proposed CTD Sidetrack • ~4-1/2" SSSV LAND. NIP, ID=3.813" ~ GAS LIFT MANDRELS 9700' i- -i 4-1/2" OTIS X NIP, ID = 3.813" 9760' Symphony Dow Whole PSI Guages (I w ire) 9800' 9$20' 9-5/8" x 4-1 /2" PKR, ID = 4.0" 4-112" OTIS X NIP, ID = 3.813" 7" LNR ~~ 9920' I4-1I2" TBG, 12.6#, CR, .0152 bpf, ID = 3.955" ~~ 10100, 9-5/8" CSG, 47#, NT-80S, ID = 8.681" 10191' PERFORATION SUMMARY REF LOG: CET/BRCS ON 07/21/88 ANGLE AT TOP PERF: 38 ~ 10557 Note: Refer to Production DB for historical perf data SIZE SPF INTERVAL Opn/Sqz DATE 2-1 /8" 4 10552- 10584 >c'a;ed proposed T 6 10592 - 10632 isolated proposed 5" 4 10642 - 10807 isolated proposed 2-1/8" 4 10676-10685 isolated proposed 2-118" 4 10676 - 10685 isolated proposed 2-1/6" 4 10685- 10710 isolated proposed PBTD H 10820' 7" LNR, 26#, L-80, .0383 bpf, ID = 6.276" 10864' 12325' i~ z-01 A P82 11813' Openhole SR 11813' z-01APB1 10400' Tap P&A Cement 10517' MA RKER JOINT DATE REV BY COMNENfS DATE REV BY COMMENTS 07/23188 ORIGINAL COM PLETION 09/25/05 TWS/TLH PX PLUG SET (08/19/05) 05/22/01 RNITP CORRECTIONS 01 /18!06 KSB/TLH PX PLUG PULLEDANRP SET 02/03/05 VECO/TLH TREEHEAD CORRECTION 03!17/05 LDKlPJC PERFORATION 05/18!05 KSB/PJC GLV GO 08/25/05 KSB/TLH GLV GO (08/18/05) PRUDHOE BAY UNfr VH~L: Z-01 PERMfr No: 88-0660 AR No: 50-029-21830.00 SEC 19, T11 N, R12~ 977' FNL 83456' FEL BP 6cploration (Alaska) - FRANK H. MURKOWSKI, GOVERNOR 1~~+y~ LL1t~-7~ OIL ~ ~ 333 W. 7'" AVENUE, SUITE 100 COls-7iIRQA~lO1~ CO~~IISSIOi~ ANCHORAGE, ALASKA 99501-3539 PHONE (907) 279-1433 FAX (907) 276-7542 Aras Worthington CT Drilling Engineer BP Exploration (Alaska) Inc. PO Box 196612 Anchorage, AK 99519-6612 Re: Prudhoe Bay Field, Prudhoe Bay Oil Pool, PBU Z-OlA BP Exploration (Alaska) Inc. Permit No: 206-038 Surface Location: 977' FNL, 3456' FEL, SEC. 19, T11N, R12E, UM Bottomhole Location: 4810' FNL, 808' FEL, SEC. 24, T11N, R11E, UM Dear Mr. Worthington: Enclosed is the approved application for permit to redrill the above referenced development well. This permit supplements the permit for the well previously issued on March 20, 2006 to account for the sidetracked well branch PBU Z-OlA PB2. This permit to drill does not exempt you from obtaining additional permits or an approval required by law from other governmental agencies and does not authorize conducting drilling operations until all other required permits and approvals have been issued. In addition, the Commission reserves the right to withdraw the permit in the event it was erroneously issued. Operations must be conducted in accordance with AS 31.05 and Title 20, Chapter 25 of the Alaska Administrative Code unless the Commission specifically authorizes a variance. Failure to comply with an applicable provision of AS 31.05, Title 20, Chapter 25 of the Alaska Administrative Code, or a Commission order, or the terms and conditions of this permit may result in the revocation or suspension of the permit. When providing notice for a representative of the Commission to witness required test, contact the Commission's petroleum field inspector at (90 65 -3607 (pager). .N DATED thisay of November, 2006 cc: Department of Fish & Game, Habitat Section w/o encl. Department of Environmental Conservation w/o encl. STATE OF ALASKA ~ ALA OIL AND GAS CONSERVATION COMM15310N . PERMIT TO DRILL 20 AAC 25.005 ~~` tt~L`Zoo(o ~~~~~v~~ ~i r T ~ 0 2006 1a. Type of Work: Drill ~ Redrill 0 Re-entry ~ 1b. Current Well Class: Exploratory ~ Development Oil Q Stratigraphic Test ~ Service ~ Development Gas ~ Multiple Zone ~ Single Zone ~ 1c. Specify if v~~~~d~~$ C0115. i~0fTlfTtISSIOtI Coalbed Methane ~ ~t~~,}iydrates Shale Gas ~~r"" 2.Operator Name: BP Exploration (Alaska) Inc. 5. Bond: Blanket Q Single Well ~ Bond No. 6194193 11. Well Name and Number: PBU Z-01A 3. Address: P.O. Box 196612, Anchorage, Alaska 99519-6612 6. Proposed Depth: MD: 11450 TVD: gggpgg 12. Field/Pool(s): Prudhoe Bay Fieid / 4a. Location of Well (Governmental Section): Surface: 977' FNL, 3456' FEL, SEC. 19, T11 N, R12E, UM 7. Property Designation: ADL 028245 Prudhoe Bay POOI Top of Productive Horizon: 5035' FNL, 482' FEL, SEC. 24, T11 N, R11 E, UM 8. Land Use Permit: 13. Approxi pud Date: 10/3 coos Total Depth: 4810' FNL, 808' FEL, SEC. 24, T11 N, R11 E, UM 9. Acres in Property: 2560 14. Distan o Nearest Property: 4460' 4b. Location of Well (State Base Plane Coordinates): Surface: x- 599221 y- 5959100 Zone- ASP4 10. KB Elevation Plan (Height above GL): 91,7 feet 15. Distance to Nearest Well Within Pool: 520' 16. Deviated wells: Kickoff depth: 10345 feet Maximum Hole Angle: 92 degrees 17. Maximum Anticipated Pressures in psig (see 20 AAC 25.035) Downhole: 3650 Surface: 2770 18. Casing Program: Specifications Top -Setting Depth -Bottom Cement Quantity, c.f. or sacks Hole Casing Weight Grade Coupling Length MD TVD MD TVD (including stage data) 4-1/8" 33/16x 2-718 6.2#/ 6.4# L-80 TCII / STL 1450 10000' 8506 11450 8990' 112 cu ft Class 'G' 19. PRESENT WELL CONDITION SUMMARY (To be completed for Redrill and Re-Entry Operations) Total Depth MD (ft): 10864 Total Depth TVD (ft): 9183 Plugs (measured): 9873 Effect. Depth MD (ft): 10820 Effect. Depth TVD (ft): 9149 Junk (measured): None Casing Length Size Cement Volume MD TVD Conductor/Structural 110' 20" 8 cu yds Concrete 110' 110' Surface 2672' 13-3/8" 3581 cu ft Permfrost 2672' 2672' Intermediate 10192' 9-5/8" 2169 cu ft Class'G' 10192' 8655' Production Liner 944' 7" 326 cu ft Class 'G' 9920' - 10864' 8445' - 9183' Perforation Depth MD (ft): 10552' - 10807' Perforation Depth TVD (ft): 8937' - 9138' 20. Attachments: Filing Fee, $100 ~ BOP Sketch , Drilling Program ,, Time v. Depth Plot Shallow Hazard Analysis Property Plat Diverter Sketch Seabed Report Drilling Fluid Program ~ 20 AAC 25.050 requirements 8 21. Verbal Approval: Commission Representative: Date 22. I hereby certify that the foregoing is true and correct. Contact Aras Worthington, 564-4102 Printed Name Aras Worthington Title CT Driling Engineer Prepared by Name/Number: Signature Phone 564-4102 Date 10/30/2006 DeWavne R. Schnorr. 564-5174 Commission Use Only Permit to Drill Number:2® -•~Q API Number: 50-029-21830-01-00 Permit Approval Date: See cover letter for other requirements. Conditions of approval : If box is checked, well may not be used to explore for, test, or produce coalbed methane, gas hydrates, orgas contained in shales: Other: ~ ~ S ~ -p ~ ~ E ~p 3 SDO S.v ~ Samples req'd: Yes No~ Mud log req'd: Yes No f~ ~ HZS measures: Yes No~ Directional svy req'd: Y o~ / PRO B THE COMMISSION DATE: ~('~'Z~ ,COMMISSIONER Form 10-401 Revised 12/2005 ~ R I G l N A L Submit n Duplicate BP Prudhoe Bay ~OlA CTD Sidetrack CTD Sidetrack Summary Rig Work: 1) MIIZU Nordic 2 and test BOPE to 250 psi low and 3500 psi high. 2) Mi113.8" window @ 10,345' MD. 3) Dri114-1/8" open hole (pilot hole), 1,575' sidetrack through Zone 2, 3, & 4 target TD @ ~11,920'MD. Pilot hole was almost TD'd @ 11,813' MD. Shales stuck BHA and hole was abandoned without cemen ' ue to inability to get cement nozzle to the target cementing area. This hole became Z-O1 B 4) Log pilot hole & Plugb w/ cement to ~ 11,500' MD. 5) Openhole sidetrack @ 11,500' MD and drill lateral to 12,900' MD targeting Zone 2, 3, & 4; TD @ 12,900' MD. Openhole sidetrack was executed @ 10,630' MD to drill final lateral. Shales/clay/lost circulation resulted in sticking BHA again. Hole was abandoned @ 12,325' MD. Attempted to cement back this hole enting nozzle became stuck @ 10,585' MD (in the build section). This hole became Z-O1 B oth laterals were cemented from the window by bullheading cement into the well wt h a CT nozzle (~45 bbls of 15.8 ppg pumped). ~ 6) All laterals cemented back to the window. Redrill the build and proceed to TD of Z-OlA with a revised well plan and bottomhole location (attached). Revised TD @ 11,450' MD. /. 7) Run solid 3-3/16"x2-7/8" liner, cement and test to 2000 psi. 8) Cleanout liner and perforate for production 0800' of perfs). 9) Freeze protect well and RDMO. Mud Program: • Well kill: 8.5 ppg • Milling/drilling• .6 p~g (to keep shales intact) Flo Pro or biozan for milling, new Flo Pro for drilling. Disposal: • 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: • 3-3/16", 6.2#, L-80, TCII to 10,600' x 2-7/8", 6.4#, L-80, STL to 11,450' fully cemented liner. Top of liner to be at ,,000' MD. • A minimum f 20 J~bls 15.8 ppg. cement will be used for liner cementing. Note: The very short liner lap is design provide room for a future sidetrack. A retrievable liner top packer will be installed to seal the liner lap and cover squeeze hole in the 4 'h" tubing. Well Control: BOP diagram is attached. Pipe rams, blind rams and the CT pack off will be pressure tested to 250 psi and to 3500 psi. The annular preventer will be tested to 250 psi and 2500 psi. Directional • See attached directional plan. • Magnetic and inclination surveys will be taken every 30 ft. No gyro will be run. • Distance to nearest property - 4460 ft. • Distance to nearest well within pool - 520 ft (Z-33A) Logging • MWD directional, Gamma Ray, and Resistivity will be run over all of the open hole section. MCNL log will be run across the cemented liner. Hazards • The maximum recorded H2S level on Z Pad is 20 ppm. • Lost circulation risk is moderate. Reservoir Pressure • Res. press. is estimated to be 3650 psi at 8800'ss (8.Oppg EMW). Max. surface pressure with gas (0.10 psi/ft) to surface is 2770 psi. /r Operator: BP Exploration Alaska, lnc. Job No: 1252553 Field: Prudhoe Bay Unit AFE No: PBD 4P2495 Well: Z-OIA Plan #I1 API No: ??? Rig: Nordic 2 ft Coordinate System: + ~~ Surface Location Parent Well: Z-OIAPBI X: 599221.09 ft RKB Height: 91.70 ft Y: 5959100.02 ft Meas. Incl. TRUE Subsea Coords. -True North Dogleg Vicw Tuul Build Turn Course Drilled Depth (ft) Angle (deg) .Azi. (deg) l~~ D ritl N(+)/S(-) (ft) E(+)/W(-) (If) Se~~erity 1"100 RI ~'S (315°) (ft) I~.u~t~ daiegi ('?IUU lt) 1 lUn Itl Length (ft) Distance (fq Comments 10300.00 38.58 226.37 Sa-~~_~ ~ -41 17.71 -1300.77 1.67 -1991.88 Tie-in Point from Z-OIAPBI 10343.00 38.39 226.5 86~!~.-1~i -4136.14 -1320.17 0.51 -1991.20 I d~i -0.44 0.42 43.00 43.00 KOP to of whi stock 10363.00 39.95 225.15 Sr,~r~ ~~~~ -4143.94 -]329.'3 5.97 -199LU1 ,u 7.80 -7.00 20.00 63.00 late olatedAz 10413.00 62.45 225.1> 8~,: ~ -4172.2 -1356.65 45.00 -1990.91 0 45.00 0.00 50.00 113.00 1st oodsurve 10420.00 62.50 225.?n ~~~~,~ -4176.49 -1361.21 44.98 -1990.70 `10 0.71 X11.71 7.00 120.00 10430.00 62.72 233.7~~ - -4182.04 -1368.13 -14.98 -1989.74 ~~`~ 2.20 50.60 10.00 130.00 (0440.00 63.12 238.s~~ ~, -4186.95 -1375.53 45.05 -1988.00 4.00 50.40 10.00 140.00 10450.00 63.70 243.?' -;-+_,~i -4191.28 -1383.37 4499 -1985.49 5.80 49.90 10.00 150.00 10460.00 64.45 248.-_' ~ -4194.90 -1391.60 44.97 -1982.23 ~~. 7.50 49.30 10.00 160.00 10470.00 65.36 253.>~! -4197.82 -1400.17 4>.03 -1978.24 9.10 48.70 10.00 170.00 10480.00 66.43 258.~~~ -4200.03 -1409.02 4.01 -1973.54 ~- 10.70 47.90 10.00 180.00 10490.00 67.64 263.~~~~ -4201.51 -1418.11 -}4.93 -1968.16 12.10 47.00 10.00 190.00 10500.00 68.99 267.-i -4202.25 -1427.37 45.09 -1962.14 7, 13.50 46.30 ]0.00 200.00 10510.00 70.45 272.2-t - -4202.25 -1436.74 44.93 -1955.51 14.60 45.30 10.00 210.00 10520.00 72.03 276.6~~ ~ ' ~ ~ ~%,~ -4201.51 -1446.18 45.00 -1948.32 ,1 ~ 15.80 44.50 10.00 220.00 10530.00 73.71 281.06 a~-~ ~~~ -4200.04 -1455.62 45.01 -1940.60 ~,v 16.80 43.70 10.00 23Q00 10540.00 75.47 28.;6 ~--~~,~~~- -4197.84 -1465.00 45.03 -1932.41 6R 17.60 43.00 10.00 240.00 10550.00 77.32 289.5 -419492 -1474.27 44.99 -1923.79 66 18.50 42.20 10.00 250.00 10560.00 79.22 293.71 - -4191.30 -1483.37 44.94 -1914.80 ~~~~ 19.00 41.60 10.00 260.00 10570.00 81.19 297.85 -4187.02 -1492.24 45.04 -1905.50 19.70 41.10 10.00 270.00 10572.07 81.60 298.- ~ -4186.05 -1494.04 45. l8 -1903.54 19.81 41.06 2.07 272.07 10575.00 81.59 298.~~ ~ ~ ~ +.' -4184.66 -1496.58 11.83 -1900.76 -0.34 -1L95 2.93 275.00 10600.00 8L50 295.?I -4173.50 -1518.65 12.03 -IS77.27 -0.36 -12.16 25.00 300.00 10625.00 81.43 292.Zx ;~;~~ ~:i -4163.53 -1541.27 I L99 -1854.22 -0.28 -12.12 25.00 325.00 10650.00 81.39 289._'1 '<.~~1-i.5~ -4154.77 -1564.38 I L99 -1831.68 '11 -0.16 -12.12 25.00 350.00 10675.00 81.37 286 ' I ;~;~~r_:~ ~ -4147.24 -1587.92 12.02 -1809.7' ~~1 -0.08 -12.16 25.00 375.00 10700.00 81.37 283.1~~ <<i~' u~+ -4140.97 -(611.82 I L98 -1788.38 `~~ 0.00 -12.12 25.00 400.00 10725.00 81.40 280.1-4 ,i.?~~ -4135.97 -1636.03 12.02 -1767.73 -yi, 0.12 -12.16 2.00 425.00 10750.00 81.45 277.1 1 ~a~'i.71 -4132.27 -1660.47 1 L99 -1747.83 8'~ 0.20 -12.12 25.00 40.00 10775.00 81.53 274.uK ,~~i3.'i -4129.80 -16K5.07 IL99 -1728.73 `~~~ 0.32 -12.12 25.00 475.00 10800.00 81.63 27 L~ i> ; i o.~;- -4128.75 - } 709.77 12.00 -1710.48 0.40 -12.12 26.00 500.00 l 0812.07 81.68 269. ~ ~ ~ ~ i ~ r~ ~; -4 l 28.69 - I i 21.72 12.06 -1701.99 0.4 I - 12.18 12.07 512.07 10825.00 81.63 271.I~ ;.?i~.i. -4138.60 -1734.51 12.02 -1692.88 ~Z -0.39 12.14 12.93 525.00 10850.00 8 L55 274. I ti ~,~?-S. E ~ ~ -4127.45 -1759.2 I 1 L99 -1674.60 -0.32 12.12 25.00 550.00 10875.00 81.49 277.22 '?.~> -4125.00 -1783.81 12.03 -1655.47 -0.24 12.16 25.00 57.00 10900.00 81.46 280.2 ~;S?1.5~ -4121.24 -1808.24 1199 -1635.54 -0.12 12.12 25.00 600.00 10925.00 81.45 283.25 x35. '"- -4116.20 -1832.44 11.99 -1614.86 ~ -0.04 12.12 25.00 625.00 10950.00 81.46 286.32 ;~~3a'.~~~~ -4109.89 -1856.34 12.03 -1593.50 0.04 12.16 25.00 650.00 10975.00 8L50 289.3> :~r-t2s)~~ -4102.32 -1879.88 11.99 -1571.51 ~ 0.16 12.12 25.00 675.00 Original Plan Page 1 of 3 (Z-01A Plan 11 Geotrak.xls) 10/30/2006 11:03 AM Meas. Incl. TRUE Subsea Coords. -True North Dogleg Vicw l"oul Build Turn Course Drilled Depth (ft) Angte (deg) Azi. (deg) I~~`U (ft) N(+)/S(-) (ft) E(+)/~'~'(-) U~t) Ses~crih~ (";IUO R) b'S (315°) (fp 1':occ (dey} 1`.100 tip ("IOU til Length (ft) Distance (ft) Comments 11000.00 81.56 292.38 R846.3~ -4093.51 -19112.98 11.99 -154894 89 0.24 12.12 25.00 700.00 11025.00 81.64 295.41 ~ ~~ -4083.50 -1925.59 11.99 -1525.87 ~ 0.32 12,12 25.00 725.00 11032.07 81.67 296' -4080.45 -1931.88 12.04 -1519.27 0.42 12.16 7.07 732.07 11050.00 80.32 297.~h -4072.37 -1947.65 12.02 -1502.41 ~ ~ ~ -7.53 9.48 17.93 750.00 11075.00 78.45 300.3> -4060.40 -1969.10 11.98 -1478.78 -7.48 9.52 25.00 775.00 11100.00 76.60 302.~~- ~ -4047.63 -1989.90 12.00 -1455.04 I'?. -7.40 9.68 25.00 800.00 11125.00 74.78 305.'3 ~ ~ -4034.09 -2009.98 12.00 -143].26 i ~;~ -7.28 9.84 25.00 825.00 ] 1150.00 72.98 307? 3 ~ ~'~ -4019.81 -2029.29 12.01 -1407.51 I Z % -7.20 IO.UO 25.00 850.00 1 1175.00 7l .21 3 I U ' ~ ~ • - -4004.85 -2047.78 12.01 - 1383.86 I ': ~ -7.08 10.20 25.00 875.00 11200.00 69.48 312.8s -3989.23 -2065.39 1199 -1360.36 I-_~~ -692 10.40 25.00 900.00 11225.00 67.79 315.E-1 ~ -3973.00 -2082.08 I L99 -1337.09 i ~5 -6.76 10.64 25.00 925.00 11232.07 67.32 316.3 I ~ -3968.30 -2086.62 12A6 -1330.55 I ~4 -6.65 10.89 7.07 932.07 l 1250.00 67.15 31 ~.~~:~ -3956.58 -2098.28 12.02 -1314.02 -9~ -095 -12.99 17.93 950.00 11275.00 66.96 310.73 ~~-" -3941.07 -2115.29 12A0 -129L03 -~)<1 -0.76 -13.00 25.00 975.00 11300.00 66.85 307.4? -3926.57 -2133.13 12A0 -1268.16 `>> -0.44 -13.04 ti.00 1000.00 11325.00 66.80 304? I -3913.12 -2151.76 1 L99 -1245.47 -0.20 -13.04 25.00 1025.00 11350.00 66.82 300.~i4 ~~~ -3900.75 -217LI2 12.02 -1223.13 0.0R -13.08 25.00 1050.00 11375.00 66.91 297.6 s'~i,~~.~-~~ -3889.50 -2191.17 12.00 -1200.9u 0.36 -13.04 25.00 1075.00 11400.00 67.06 294.43 ~9~0.(~s -3879.39 -2211.83 11.98 -1179.14 0.60 -13.00 25.00 1100.00 11425.00 67.28 291. I S ~~»ii. ;,~ -3870.46 -2233.07 12.01 -1 157.81 *'r~ Q88 -13.00 25.00 1125.00 11450.00 67.57 287.95 ~~~~" `;~S -3862J3 -2254.82 11.99 -1136.97 L16 -12.92 25.00 1150.00 '~ `._ #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A ~ #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A .+Nr;~~ #N/A #N/A #N/A #N/A #N/.A #N/A #N/A #N!A '<nl `, #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A ~'~~~~ #N1A #N/A #N/A #N/A #N/A #N/A #N/A #NlA ~?~,.1 #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A -`` ~. #N/A #N/A #N/A #N/A #+N/A #N/A #NlA #N/A #N/A #N/A #N/A #N/A #N/A #N/A #NlA #N!A ~ #N/A #N/A #N/A #N/A #N/A mN!A #NIA ietilA `w^ #N1A #N/A #N/A #N/A #N/A ~~,-N!A #N/A f;N/A ~~ #NIA #NIA #N/A #N/A trN!A #N/A #N/A ++N;A ' #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #NlA #NlA P;:~ #N/A #N/A #NlA #N/A #N/A #N/A #NIA #N/A ti-,~ #NIA #NIA #N/A #N/A #N/A ~#NlA #N/A #N/A ~ A',~i #N/A #N/A #N/A #N/A ,~ : #N/A #N/A #N/A ~tNIA "~, ~ 4 #N/A ~1NlA #N/A #N/A a #N/A #N/A #N/A #N/A ;_'~. a #N/A #NIA #N/A #N/A ~~~~~~ #N/A #N/A #N1A ~#N/A "~~,a #N/A #N/A #N/A #N/A #N/A #N/A #tN/A #N/A ~'ti'~ #N/A #N/A #N/A #N/A #N/A #N/A #N/A #~N!A ;~;~ t #N/A #N/A #N/A #N/A #N/A #N1A #N/A 1#N/A #N/A #N/A #N/A #N/A ~ ~~ #N/A #N/A #N/A ~N/A ~~~i #PNIA #N/A #N/A #N/A ~~ ~. #NlA #N/A #N/A #N/A #N/A #NIA #N/A #N/A #N/A ~=N/A #N/A =N/A ~~ #N/A #N/A #N/A #N/A - ~ #NIA #NIA #N/A ~+N/A ~~~~_~'~ #N/A #N/A #N/A #NlA #N/A #dN/A #N/A #N/A ~?-~ #N/A #N/A #N/A #N/A Original Plan Page 2 of 3 (Z-01A Plan 11 Geotrak.xls) 10/30/2006 11:03 AM YELLHEAD= MCEVOY .CTUATOR = OTC :B. ELEV = 91.73 _ .F. ELEV = 57.28 :OP = 3000 lax Angle = 43 @ 9054 katum MD = 10497 Datum TV D = 8800' SS 1 13-3/8" CSG, 68#, L-80, ~ = 12.415" 1 Z-0 ~ ~ SAFETY NOTES: • 2006 I-13-1/2" OTIS SSSV LAND. NIP, ~ = 2.75" GAS LIFT MANDRELS Minimum ID = 2.750" @ 2006' 3-1 i2" OTIS SSSV NIPPLE TOP OF 7" LNR ~ 9920' 1/2" TBG. 9.2#. L-80, .0087 bpf, ID = 2.992" 9967' 9-518" CSG, 47#, NT-80S, ~ = 8.681" 10191' ST MD TVD DEV TYPE VLV LATCH PORT DATE 5 3108 3013 13 OTIS DMY RM 0 4 6357 5665 41 OTIS DMY RM 0 3 8280 7134 41 OTIS DMY RM 0 2 9258 7847 43 OTIS DMY RA 0 1 9699 8180 39 OTIS "`OM RM 0 08118/( "GLM HAS EXTEND® PACKING 9~- i 3-1/2" OTIS XA SLID~VG SLEEVE, ~ = 2.75 9859' 9-5l8" x 4-1/2" TIW HBBP PKR, ID = 4.0" 9901' 3-1/2" OTIS X NIP, ID = 2.750" 9873' SLM 3-1/2" PX RUG (08/29/05) 9934' 3-1/2" OTIS X NIP, ID = 2.750" 9967' -13-1/2" TBG TAB. 9959' ELMD TT LOGGED 01/19/91 I MARKERJ09YT 1 PERFORATION SUMMARY REF LOG: CET/BRCS ON 07/21/88 ANGLE AT TOP PERF: 38 @ 10552' Note: Refer to Production DB for historical pert data SIZE SPF INTERVAL Opn/Sqz DATE 2-1/8" 4 10552 - 10584 C 06/22/90 2" 6 10592 - 10632 C 03/17!05 5" 4 10642 - 10807 C 07121 /88 2-1/8" 4 10676- 10685 C 06/22/90 2-1/8" 4 10676 - 10685 C 06/28/90 2-1/8" 4 10685 - 10710 C 03/02/91 I PBTD I 7" LNR, 26#, L-80, .0383 bpf, ~ = 6.276" ~-~ 10864' QATE REV BY COMu~fTS DATE REV BY OOMMBVTS PRUDFiOE BAY tNJtT 07123/88 . ORIGINAL COMPLETION 09/25/05 TWS/TLH PX RUG SET (08/29105) WELL: Z-01 05/22!01 RN/TP OORRECTIONS PERMIT No: 88-0660 02/03/05 V6C0/TLH TREEHEAD CORRECTION API No: 50-029-21830-00 03/17/05 LDK/PJC PERFORATION SEC 19, T11 N, R12E, 977' FNL >I< 3456' FH 05/18/05 KSB/PJC GLV C/O 08/25/05 KSB/TLH GLV C/O (08/18/05) 8P 6cploratfon (Alaska) TREE = 3-1 /8" MCEV OY WELLHEAD= MCEVOY ACTUATOR = OTIS KB sELEV = 91.73' BF. ELEV = 57.28' KOP = 3000' Max Angle = 43 @ 9054' Datum MD = 10497' Datum N D = 8800' SS 13-3/8" CSG, 68#, L-80, ID = 12.415" I~ 2672' Z-01 SAFETY 2006' I~ 3-1/2" OTIS SSSV LAND. NIP, ID = 2.75" GAS LIFT MANDRELS Minimum ID = 2.750" @ 2006' 3-1/2" OTIS SSSV NIPPLE TOP OF 7" LNR I-~ 9920' ~ 13-1 /2" TBG, 9.2#, L-80, .0087 bpf, ID = 2.992" I~ 9967' 9-518" CSG, 47#, NT-80S, ID = 8.681" I-i 10191' PERFORATION SUMMARY REF LOG: CETlBHCS ON 07/21/88 A NGLE AT TOP PERF: 38 @ 10552' Note: Refer to Production DB for historical pert data SIZE SPF INTERVAL OpnlSgz DATE 2-1/8" 4 10552-10584 S 07/16/06 2" 6 10592 - 10632 S 07/16/06 5" 4 10642 - 10807 S 07/16/06 2-1/8" 4 10676 - 10685 S 07/16/06 2-1/8" 4 10676-10685 S 07/16/06 2-1/8" 4 10685-10710 S 07/16/06 PBTD 10820' 7" LNR, 26#, L-80, .0383 bpf, ID = 6.276" 10864' ST MD ND DEV TYPE VLV LATCH PORT DATE 5 3108 3013 13 OTIS DMY RM 0 4 6357 5665 41 OTIS DMY RM 0 3 8280 7134 41 OT1S DMY RM 0 2 9258 7847 43 OTIS DMY RA 0 1 9699 8180 39 OTIS **DM RM 0 08/18/05 "'GLM HAS EXTEND® PACKING 9794' 3-1/2" OTIS XA SLIDUVG SLEEVE, ID = 2.750" 9823' TBG cur (os/o1/os) 9859' 9-518" x 4-1/2" TM/ HBBP PKR, ID = 4.0" 9901' 3-1/2" OTIS X NIP, ~ = 2.750" 9~34~ 3-1/2" OTIS X NIP, ID = 2.750" 9967' 9959' I 10517' I DATE REV BY COMMENTS DATE REV BY COMMENTS 07/23188 ORIGINAL COMPLETION 01/18/06 KSBlTLH PX PLUG PULLEDNVRP SET 02/03/05 VECORLH TREEFiEAD CORRECTION 05/27/06 RCT/PJC PULL WFD PLUG @ 9950' 03/17/05 LDK/PJC PERFORATION 07/16/06 SGS/PJC P&A 05/18/05 KSB/PJC GLV GO 08/01/06 TWS/PA TBG CUT@ 9823' 08/25/05 KSB/TLH GLV GO (08/18/05) 09/25/05 TWS/TLH PX PLUG SET (08129/05) 3-1/2" TBG TAIL ELMD TT LOGGED 01/19/91 TOP OF CEMENT (07116/06) MARKER JOINT PRUDHOE BAY UNIT WELL: Z-01 PERMIT No: 88-0660 API No: 50-029-21830-00 SEC 19, T11 N, R12E, 977' FNL &3456' FEL BP Exploration (Alaska) TREE _ '8" MCEV WELLH64D= MCEV ACTUATOR = C KB. ELEV = 91 BF. ELEV = 57 KOP= 3( Max Angle = 43 ~ 9( Datum MD = 10~ Datum TVD = 8800' 13-3/8" CSG, 68#, L-80, ID = 12.415" H 2672' GAS LIFT MANDRELS TYPE VLV LATC 9700' H 4-1l2" OTIS X NIP, ID = 3.813" 9760' Symphony Dow Whole PSI Guages (I w ire) 9800' g8~ 9-5/8" x 4-1 /2" PKR, ID = 4.0" 4-1 l2" OTIS X NIP, ID = 3.813" OF 7" LNR I-I 9920' TBG, 12.6#, CR, .D152 bpf, ID = 3.958" ~ 10100' 9-5/8" CSG, 47#, NT-80S, ID = 8.681" 10191' PERFORATION SUMMARY REF LOG: CET/BRCS ON 07/21/88 A NGLE AT TOP PERF: 38 (~ 10557 Note: Refer to Production DB for historical perf data SIZE SPF INTERVAL Opn/Sqz DWTE 2-1 /8" 4 10552-10584 'so!ated proposed 7' 6 10592- 10632 isolated proposed 5" 4 10642 - 10807 isolated proposed 2-1 /8" 4 10676- 10685 !solated proposed 2-1/8" 4 10676- 10685 isolated proposed 2-1/8" 4 10685- 10710 isolated proposed PBTD 10820' 7" LNR, 26#, L-80, .0383 bpf, ID = 6.276" 10864' Z-01 A ~F~ T~: Proposed CTD Sidetrack /- 2000' 4-1/2" SSSV LAND. NIP, ID = 3.813" 10000' Top of Cement 10000' TOP OF 3-3116" LNR 10010' 3.5" XN Nip 2.75" ID 10100' I~ 4-1.2" TBG TAIL I 12325' I i 3-3/16" X 2-7/6" cmt'ed and perfe 10343' Mechanical Whipstock 10700' 3-3116 x 2-7/8 X-over I 11460' I 11l 813 f 11813' 10400' 10517' DATE REV BY COMMENTS DATE REV BY COMMENTS 07/23/88 ORIGINAL COMPLETION 09!25/05 TWSlTLH PX RUG SET (08/29/05) 05/22/01 RNITP CORRECTIONS 01 /18/06 KSB/TLH PX PLUG PULLEDMIRP SEr 02/03/05 VECO/TLH TREEHEADCORRECTION 03/17/05 LDK/PJC PERFORATION 05/18/05 KSB/PJC GLV GO 08!25/05 KSB/TLH GLV GO (08/18/05) PRUDHOE BAY UNIT WELL: Z-01 PERMIT No: 88-0660 API No: 50-029-21830.00 SEC 19, T11 N, R12~ 977' FNL 83456' FEL BP 6cploration (Alaska) Openhole S/T Z-01AP81 ~ Top P&A Cement NN ~ Anticollision Report i iNTEQ Company: BP Amoco Date: 2/5/2006 Time: 13:18:39 Page: I Field: Prudhoe Bay Reference Site: PB Z Pad Co-ordinate(NE) References Well: Z-01, True North Reference Well: Z-01 Vertical ('fVD) Reference: 1:01 6/28/1988 00:00 91.7 Reference Wellpath: Plan 3, Z-01A Pilot Hole Db: Orade NO GLOBAL SCAN: Using user defined selection & scan criteria Reference: Prindpal Plan & PLANNED PROGRAM loterpolation Method: MD Interval: 100.00 ft Error Model: ISCWSA Ellipse Depth Range: 10300.00 to 11917.93 ft Scan Method: Trav Cylinder North Maximum Radius: 1388.02 ft Error Surface: Ellipse + Casing Survey Program for Definitive WeUpsth Date: 2/5/2006 Validated: No Version: 2 Planned From To Survey Toolcode Tool Nsme ft ft 100.00 10300.00 1 : Schlumberger GCT multishot GCT-MS Schlumberger GCT multishot 10300.00 11917.93 Planned: Plan #3 V16 MWD MWD - Standard Casing Points MD TVD Diameter Hole Size Name ft ft in in 11917.93 9081.66 3.500 4.500 3.50" Summary ~ Otfset Wellpath ~ Reference Offset Ctr-Ctr No-Go AUowable Site WeU Wellpath MD MD Distance Area Deviation Warning ft ft ft ft ft PB Z Pad - ExpansiorPlan Ivi Z-41p Plan Ivi Z-41p VO Pian 1 0738.40 10100.00 900.97 169.93 731.04 Pass: Major Risk PB Z Pad - ExpansiorPlan Ivi Z-41 Plan Z-41 V1 Pian: Pla Out of range PB Z Pad Plan Z-41 (slot 34 a Pian Z-41 V5 Plan: Pla Out of range PB Z Pad Plan Z-41 (slot 34 a Plan Z-41 PB1 VS Pian: Out of range PB Z Pad Z-01 Plan 3, Z-01A VO Plan: 1 1598.95 11600.00 9.58 217.83 -208.26 FAIL: Major Risk PB Z Pad Z-01 Z-01 V1 1 0300.00 10300.00 0.00 203.96 -203.96 FAIL: Major Risk PB Z Pad Z-33 Plan Z-336 V2 Plan: PI Out of range PB Z Pad Z-33 Z-33A V1 1 1894.11 11600.00 486.30 212.41 273.89 Pass: Major Risk Site: PB Z Pad -Expansion 2004 Well: Plan ivi Z-41p Rule Assigned: Major Risk Wellpath: Plan ivi Z-41p VO Plan: Ivi Z-41 p wp02 V2 Inter-Site Error: 0.00 ft Reference Offset Semi-Major Azis Ctr-Ctr No-Go Allowable MD TVD MD TVD Ref Offset TFO+AZ;I TFO-HS Cssing/HSflistance Area Deviation Warning ft ft ft ft ft ft deg deg in ft ft ft 10660.09 8813.24 9600.00 7834.95 27.69 24.73 225.21 335.57 8.500 1067.30 141.33 925.97 Pass 10679.94 8812.29 9700.00 7912.92 27.29 24.19 223.54 331.51 8.500 1015.68 147.79 867.89 Pass 10700.00 8811.35 9800.00 7990.88 26.89 23.60 221.40 326.96 8.500 970.88 154.07 816.82 Pass 10714.58 8810.68 9900.00 8068.77 26.62 23.20 218.07 321.88 8.500 934.26 160.22 774.04 Pass 10728.08 8810.08 10000.00 8145.68 26.37 22.72 214.05 316.24 8.500 910.21 165.52 744.69 Pass 10738.40 8809.62 10100.00 8221.06 26.20 22.35 209.24 310.19 8.500 900.97 169.93 731.04 Pass 10745.82 8809.29 10200.00 8294.53 26.07 22.11 203.96 304.02 8.500 907.25 173.07 734.18 Pass 10750.00 8809.11 10300.00 8365.74 26.00 21.99 198.44 298.00 8.500 928.84 174.95 753.89 Pass 10750.00 8809.11 10400.00 8434.34 26.00 22.05 192.81 292.36 8.500 964.73 176.03 788.70 Pass 10750.00 8809.11 10500.00 8500.00 26.00 22.10 187.74 287.29 8.500 1013.25 175.90 837.35 Pass 10750.00 8809.11 10600.00 8562.39 26.00 22.13 183.32 282.87 8.500 1072.47 174.93 897.55 Pass 10750.00 8809.11 10700.00 8621.22 26.00 22.14 179.55 279.10 8.500 1140.47 173.44 967.03 Pass 10750.00 8809.11 10800.00 8676.20 26.00 22.13 176.39 275.95 8.500 1215.47 171.71 1043.75 Pass 10740.96 8809.50 10900.00 8727.05 26.15 22.55 172.67 273.31 8.500 1295.80 172.10 1123.70 Pass 10735.18 8809.76 11000.00 8773.54 26.25 22.80 169.85 271.19 8.500 1380.20 171.84 1208.36 Pass Site: PB Z Pad Well: Z-01 Rule Assigned: Major Risk Wellpath: Plan 3, Z-01A VO Plan: Plan fi3 V2 Iater~ite Error: 0.00 ft Reference Offset Semi-Major Azis Ctr-Ctr No-Go AUowable MD TVD MD TVD Ref Offset TFO+A2:1 TFO-IiS Casieg/HSDistaece Area Deviation Wareing ft ft ft ft ft ft deg deg in ft ft ft 10300.00 8738.53 10300.00 8738.53 32.29 32.03 226.37 0.00 3.500 0.00 203.52 -203.52 FAIL 10400.00 8808.74 10400.00 8808.74 31.20 30.84 226.56 0.00 3.500 0.00 190.97 -190.97 FAIL 10500.00 8821.35 10500.00 8821.35 31.08 30.75 230.41 0.00 3.500 0.00 169.07 -169.07 FAIL 10600.00 8816.20 10600.00 8816.20 28.97 28.69 242.43 0.00 3.500 0.00 163.29 -163.29 FAIL 10700.00 8811.35 10700.00 8811.35 26.89 26.66 254.44 0.00 3.500 0.00 157.72 -157.72 FAIL 10800.00 8807.01 10800.00 8807.01 25.25 25.06 266.45 0.00 3.500 0.00 153.44 -153.44 FAIL 10900.00 8803.38 10900.00 8803.38 24.26 24.10 278.45 0.00 3.500 0.00 151.04 -151.04 FAIL 11000.00 8802.24 11000.00 8802.24 23.97 23.81 290.06 0.00 3.500 0.00 150.30 -150.30 FAIL v~ + Anticollision Report ~~vvr~cv INTEQ Company: BP Anwco Date: 2/5/2006 Time: 13:18:39 Page: 2 Field: Prudhoe Bay Reference Site: PB Z Pad Co-ordinate(NE) Reference: Well: Z-0 1, True NoRh Reference Well: Z-01 Vertical (fVD) Reference: 1:01 6/28N988 00:00 91.7 Reference Welipath: Plan 3, Z-01A Pitt Hole Db: Orade Site: PB Z Pad Well: Z-01 Rule Assigned: Major Risk Welipath: Plan 3, Z-01A VO Plan: Pian ff3 V2 later-Site Error: 0.00 ft Reference Offset SemhMajor Azjs Ctr-Ctr No-Go Allowable MD TVD MD TVD Ref Offset TFO+Atii TF0.HS Casing/H~istance Area Deviation Warning ft ft ft ft ft ft deg deg in ft ft ft 11100.00 8806.79 11100.00 8806.79 24.57 24.41 301.62 0.00 3.500 0.00 151.73 -151.73 FAIL 11200.00 8816.92 11200.00 8816.92 26.02 25.84 313.27 0.00 3.500 0.00 155.11 -155.11 FAIL 11300.00 8832.19 11300.00 8832.19 28.03 27.81 325.08 0.00 3.500 0.00 159.52 -159.52 FAIL 11400.00 8851.91 11400.00 8851.91 30.19 29.94 337.09 0.00 3.500 0.00 163.79 -163.79 FAIL 11500.00 8873.35 11500.00 8873.35 32.10 31.78 349.37 0.00 3.500 0.00 167.80 -167.80 FAIL 11598.95 8899.82 11600.00 8899.41 32.14 31.75 73.33 87.38 3.500 9.58 217.83 -208.26 FAIL 11688.87 8937.34 11700.00 8929.74 31.98 31.50 57.75 78.78 3.500 44.72 201.11 -156.40 FAIL 11762.46 8976.83 11800.00 8943.32 31.90 31.41 37.01 64.67 3.500 96.66 169.28 -72.62 FAIL 11822.19 9014.02 11900.00 8948.11 31.84 31.45 22.29 56.19 3.500 157.24 148.75 8.49 Pass 11874.01 9049.53 12000.00 8951.95 31.79 31.59 10.40 50.55 3.500 218.57 140.62 77.95 Pass Site: PB Z Pad Weil: Z-01 Rule Assigned: Major Risk Welipath: Z-01 V1 Inter-Site Error: 0.00 ft Reference Offset Semi-Major Aris Ctr-Ctr No-Go Allowable MD TVD MD TVD Ref Offset TFO+AZd TF0.HS CasiuglH~istance Area Deviation Warning ft ft ft ft ft ft deg deg in ft ft ft , 10300.00 8738.53 10300.00 8738.53 32.29 32.29 226.37 0.00 0.00 203.96 -203.96 FAIL 1 10397.09 8807.37 10400.00 8816.95 31.23 31.60 46.18 179.62 10.95 169.69 -158.75 FAIL 10458.01 8823.16 10500.00 8895.67 31.55 32.33 46.23 179.67 72.54 137.16 -64.63 FAIL 10509.74 8820.54 10600.00 8974.51 30.88 32.13 51.66 180.08 153.88 131.67 22.21 Pass 10566.41 8817.91 10700.00 9053.58 29.70 31.36 59.95 181.56 236.07 130.97 105.09 Pass (10621.26 8815.14 10800.00 9132.80 28.51 30.55 68.49 183.50 318.65 129.29 189.37 Pass 10654.93 8813.49 10864.00 9183.49 27.80 30.05 73.89 184.86 371.77 127.78 244.00 Pass Site: PB Z Pad Well: Z-33 Rule Assigned: Major Risk Welipath: Z-33A V 1 Inter-Site Error: 0.00 ft Reference Offset Semi-Major Azia Ctr-Ctr No-Go Allowable MD TVD MD TVD Ref Offset TFO+AZI TF0.HS Casing/HSOistance Ares Deviation Warning ft ft ft ft ft ft deg deg in ft ft ft 11894.11 9064.02 11600.00 8820.80 31.76 29.20 274.20 317.03 5.500 486.30 212.41 273.89 Pass 11883.16 9056.08 11650.00 8822.87 31.78 29.44 269.74 311.10 5.500 511.14 212.69 298.45 Pass ~~ ~ker Hughes INTEQ Planning~iort iNTEQ ~~. Company: BP Amoco Field: Prudhoe Bay Date: 2/5/2006 Time: 15:31:48 Co-ordinate(NE) Reference: Well: Z-01, True Notfh Page: 3 Site: PB Z Pad Vertical (TVD) Reference: 1 :01 6/28H 988 00:00 91.7 Well: Z-01 Sectlon (VS) Reference: User (O.OON,O.OOE,315.OOAzi) Wellpath: Plan 3, Z-01A Pilot Hole Survey Cakulatioa Method: Minimum Curvature Db: Oracle Survey MD Ind AzLn Sys TVD N/S E/W MapN MapE DI.S VS TFO Tool ft deg deg ft ft ft ft ft degl100ft ft deg 10825.00 92.20 269.45 8714.33 -4341.36 -1722.17 5954736.69 597556.54 12.00 -1852.05 91.92 MWD 10850.00 92.09 272.45 8713.40 -4340.95 -1747.14 5954736.77 597531.56 12.00 -1834.10 92.04 MWD 10875.00 91.97 275.45 8712.51 -4339.23 -1772.06 5954738.16 597506.62 12.00 -1815.26 92.15 MWD 10900.00 91.85 278.45 8711.68 -4336.21 -1796.86 5954740.85 597481.79 12.00 -1795.59 92.26 MWD 10917.93 91.76 280.60 8711.11 X333.24 -1814.54 5954743.58 597464.07 12.00 -1780.99 92.36 MWD 10925.00 91.53 281.41 8710.91 -4331.89 -1821.47 5954744.84 597457.12 12.00 -1775.13 106.00 MWD 10950.00 90.70 284.30 8710.42 -4326.33 -1845.84 5954750.08 597432.69 12.00 -1753.97 106.02 MWD 10975.00 89.87 287.18 8710.30 X1319.55 -1869.90 5954756.54 597408.54 12.00 -1732.17 106.08 MWD 11000.00 89.04 290.06 8710.54 -4311.57 -1893.59 5954764.21 597384.75 12.00 -1709.77 106.09 MWD 11025.00 88.21 292.95 8711.14 -4302.41 -1916.84 5954773.06 597361.39 12.00 -1686.85 106.07 MWD 11050.00 87.38 295.83 8712.10 -4292.10 -1939.59 5954783.07 597338.51 12.00 -1663.47 106.00 MWD 11075.00 86.57 298.72 8713.42 -4280.66 -1961.78 5954794.22 597316.17 12.00 -1639.70 105.89 MWD 11100.00 85.76 301.62 8715.09 -4268.12 -1983.34 5954806.46 597294.45 12.00 -1615.59 105.73 MWD 11125.00 84.96 304.52 8717.12 4254.53 -2004.22 5954819.78 597273.39 12.00 -1591.21 105.54 MWO 11150.00 84.17 307.43 8719.48 -4239.91 -2024.36 5954834.13 597253.06 12.00 -1566.63 105.30 MWD 11175.00 83.40 310.35 8722.19 -4224.31 -2043.70 5954849.47 597233.52 12.00 -1541.92 105.03 MWD 11200.00 82.65 313.27 8725.22 -4207.77 -2062.19 5954865.77 597214.81 12.00 -1517.15 104.71 MWD 11225.00 81.92 316.21 8728.58 -4190.34 -2079.79 5954882.96 597196.98 12.00 -1492.38 104.36 MWD 11250.00 81.20 319.15 8732.25 -4172.05 -2096.44 5954901.02 597180.10 12.00 -1467.68 103.96 MWD 11275.00 80.51 322.11 8736.22 -4152.97 -2112.09 5954919.89 597164.19 12.00 -1443.12 103.53 MWD ~ 11300.00 79.85 325.08 8740.49 -4133.15 -2126.71 5954939.52 597149.32 12.00 -1418.77 103.06 MWD ~ 11325.00 79.21 328.06 8745.03 -4112.64 -2140.26 5954959.85 597135.50 12.00 -1394.69 102.56 MWD 11350.00 78.60 331.05 8749.84 -4091.49 -2152.69 5954980.83 597122.80 12.00 -1370.94 102.01 MWD 11350.79 78.58 331.15 8750.00 -4090.81 -2153.06 5954981.51 597122.41 12.00 -1370.20 101.44 T1 11375.00 78.02 334.06 8754.91 -4069.77 -2163.97 5955002.40 597111.23 12.00 -1347.60 101.42 MWD 11392.93 77.63 336.22 8758.69 -4053.86 -2171.34 5955018.20 597103.65 12.00 -1331.15 100.83 MWD 11400.00 77.61 337.09 8760.21 -4047.53 -2174.07 5955024.50 597100.83 12.00 -1324.73 91.00 MWD 11425.00 77.59 340.16 8765.58 -4024.79 -2182.97 5955047.12 597091.64 12.00 -1302.36 90.81 MWD 11450.00 77.60 343.23 8770.95 -4001.61 -2190.64 5955070.19 597083.67 12.00 -1280.55 90.15 MWD 11475.00 77.64 346.30 8776.31 -3978.06 -2197.05 5955093.66 597076.94 12.00 -1259.36 89.49 MWD 11500.00 77.72 349.37 8781.65 -3954.18 -2202.19 5955117.46 597071.48 12.00 -1238.84 88.84 MWD 11517.93 77.79 351.58 8785.45 -3936.90 -2205.09 5955134.70 597068.36 12.00 -1224.57 88.18 MWD 11525.00 77.08 351.10 8786.99 -3930.08 -2206.13 5955141.50 597067.23 12.00 -1219.02 213.00 MWD 11550.00 74.58 349.40 8793.11 -3906.20 -2210.23 5955165.33 597062.81 12.00 -1199.22 213.10 MWD 11575.00 72.08 347.66 8800.28 -3882.73 -2214.99 5955188.73 597057.74 12.00 -1179.27 213.52 MWD 11600.00 69.60 345.87 8808.48 -3859.74 -2220.40 5955211.65 597052.04 12.00 -1159.19 214.02 MWD 11625.00 67.15 344.02 8817.70 -3837.30 -2226.43 5955234.00 597045.71 12.00 -1139.06 214.61 MWD 11650.00 64.71 342.11 8827.90 -3815.47 -2233.07 5955255.74 597038.78 12.00 -1118.92 215.29 MWO 11675.00 62.30 340.11 8839.05 -3794.30 -2240.31 5955276.81 597031.26 12.00 -1098.83 216.07 MWD 11697.74 60.13 338.22 8850.00 -3775.67 -2247.40 5955295.34 597023.94 12.00 -1080.66 216.96 T2 11700.00 59.92 338.03 8851.13 -3773.86 -2248.12 5955297.15 597023.18 12.00 -1078.85 217.87 MWD 11725.00 57.57 335.84 8864.10 -3754.20 -2256.49 5955316.70 597014.56 12.00 -1059.04 217.97 MWD 11735.85 56.56 334.86 8870.00 -3745.92 -2260.29 5955324.92 597010.65 12.00 -1050.50 219.10 T3 11750.00 55.26 333.54 8877.93 -3735.37 -2265.39 5955335.40 597005.41 12.00 -1039.43 219.64 MWD 11775.00 53.00 331.11 8892.58 -3717.43 -2274.79 5955353.21 596995.78 12.00 -1020.10 220.38 MWD 11800.00 50.79 328.53 8908.01 -3700.42 -2284.67 5955370.09 596985.67 12.00 -1001.09 221.80 MWD 11825.00 48.64 325.78 8924.18 -3684.40 -2295.01 5955385.97 596975.12 12.00 -982.45 223.39 MWD 11850.00 46.56 322.85 8941.03 -3669.40 -2305.77 5955400.82 596964.17 12.00 -964.24 225.17 MWD 11875.00 44.57 319.72 8958.54 -3655.48 -2316.92 5955414.60 596952.83 12.00 -946.50 227.15 MWD 11875.65 44.51 319.63 8959.00 -3655.13 -2317.22 5955414.94 596952.53 12.00 -946.04 229.34 Z-01A P 11900.00 42.66 316.36 8976.64 -3642.65 -2328.44 5955427.27 596941.14 12.00 -929.28 229.40 MWD 11917.93 41.36 313.80 8989.97 -3634.15 -2336.91 5955435.65 596932.56 12.00 -917.29 231.77 3.50" BP Alaska ~~ - ~ } y wnlena Rl~e~e! o~ty• s b . yy.rbwN!0' ` ~" ` ...aiTM...... I y u ~r r ~ mn .e• °~• ce,.n ~,e,~i e _ ~a,.au nei eier .....r........... ~~~~ ~ NTEQ I em~eee ~.~la~~°t>o.i E~w.e~R m~uw«ioa,mwl mm . IMM ~ i 'l iM ./.~ 1 i pYlY/IMR M~Ny N.1M q~ ~~ ~iW W# „fnt•M .NM i 1 i~ I I. ~ I // I I pp~~11EeFdWenpi ~(1W~R~:l~yanc~Men.mlM~ me e nM neieeem u...ow.e t 11 .Mq1 I ~! ... ~ I~ I I ~~ ~~ : ~'~ ' ! ~~ I 1 I I - . : s e Ile~eelOepNaearonee: 1:01 aaeriRYRO o N.10 CelRemoe Mmak iaeeun CUrtYn ' :. , : ! ..: ~~ ~ 1 ' ! '~ ~ i ~ ~ ~ ' I ~. ~ . ~ I •... ~ aawlaaeNaa, ,~sr ~, , -, ~ a r e-}., ~ .... .>Ne ~ 1 '' ' ~ ~ ' I V r .imil ~, , • ~ 1 1 n.,, N.+YA ~ ~ 4 ~ rY } t ~ I I y ° f ' ~''. I I I ~~ ~ ~ - .ranoanu I aae i 1 ~ '. I I - .- lw ~ w..r.. ~ no xw ww .... ~~' sa ~a ~ e ~ t ~ ~. Q t 1 .: I ~MYMaye%~~ y ~ i~Ye ~ lm Jlle.tl lut ~' j ~ C.ypf~ ~ ~ n e U~ iM » ~~~ i 1 1 I ~' I , i M . ] d atl 1 1 1 aeee j i I I J I •!'IID 1.. I - I~ sad i i 1 I 1 i I I YIe I ~ 1 1 1 ', ~ I i. 1' ~ I , .~ 1 I 1 I ~; I aero I 1 ~mol I 1 1 I ~ +®. . i . I I 1 . :.. ~ I ~... ~. 1.. i yee_.. .~.. --... ...-... .. .. J-:... ..-....... i I ~ .. I ~_. ..__- ~' I: 1 ~mfj 1 nn' ~ is ~ ~ +m i III, ~ 1 I ~ ~ I ~ ~ - I j i ; ~ I I I t i; .'ew I ~~ ~ I I, ' I I t ~ a 11M J6ili! e.m axe i J n ,iei. .:ew _.. ~: ~nae .. a+ eml .SM Nn .MM .IItt .itll .>a ~ele nro. yew ~ n pow nue non .em .roe nil0 '. Ja am e . ,. I I I am _.. _ 1 1 - I - ~ - . ~ .. I i : .. ' 1 _ 1 I 1 f 1 ~~ 1 i I ' I i i, t.. 1 1 . ~ 1 I 1 f eeic - ~ _.. I I ( .. ... i 1 i.l . I , , i eem ~. .. . i F I 1 - I ,.. I . ~!, I ' I I ... I ~~ :: I f I ~ I I I I 1 ! I 1 I !f ... ~.. I i ... I 1 ~ 1 1 I I ~ I ;: , ~i I 1 I 1 I I ~I I 1 .. eim - 1 I 1 1 I 1 1 t I 1 1 1; j I I - .~_ - .+:+ •-•,-"' w nin• rim f i! am ns nepp .oro Ir te0e two . w im noes :m .live i nim ~+ I r~ ~ ~ m .rim ~ 1 aim nose ' ~ , , ~ . ... nom aw am am am .•m .roe No +-a ~ -- .- ~ ~ } r .; , , , , i r ..:. t ' -+, rat ~ 1 . ~aoe ~ ~aeo .eao +s Leo Res ioi aio im . m •iei . - VartbM !.albs H D1D.00' IDD/lllal PIVI • Company: BP Amoco ` Field: Prudhoe Bay Site: PB Z Pad Well: Z-01 Wellnath: Plan 3.2-01A Hughes INTEQ )~ L,....~ Date: 2/5!2006 Time: 15:28:52 Page: 1 Co-ordinate(NE) Reference: Well: Z-01, True North Vertical (TVD) Reference: 1:016/2811988 00:00 91.7 Secton (VS) Reference: Well (O.OON,O.OOE,315.OOAzI) Survev Calculation Method: Minimum Curvature Db: Oracle Field: Prudhoe Bay North Slope UNITED STATES Map System:US State Plane Coordinate System 1927 Map Zone: Alaska, Zone 4 Geo Datum: NAD27 (Clarke 1866) Sys Datum: Mean Sea Level Coordinate System: Geomagnetic Model: Well CenUe bggm2005 Site: PB Z Pad TR-11-12 UNITED STATES :North Slope Site Position: Northing: 5957230.17 ft Latitude: 70 17 33.051 N From: Map Eastiag: 601304.82 ft Longitude: 149 10 47.365 W Position Uncertainty: 0.00 ft North Reference: True Ground Level: 0.00 ft Grid Convergence: 0.77 deg Well: Z-01 Slot Name: 01 Z-01 Weil Position: +N/-S 1897.93 ft Northing: 5959100.02 ft Latitude: 70 17 51.714 N +E/-W -2058.52 ft Eastiug : 599221.09 ft Longitude: 149 11 47.371 W Position Uncertainty: 0.00 ft Welipath: Plan 3, Z-01A Drilled Froro: Tie-on Depth: Plan 3, Z-01A Pilot Hole 11500.00 ft Current Datum: 1:01 6/28/1988 00:00 Height 91.70 ft Above System Datum: Mean Sea Level Magnetic Data: 2/5/2006 Field Strength: 57582 nT Declination: Mag Dip Angle: 24.38 deg 80.83 deg Vertical Section: Depth From (TVD) +N/-S +E/-W Direction ft ft ft deg 37.70 0.00 0.00 315.00 Plan: Plan #3 Date Composed: 2/5/2006 Copy Lamar's PIan3 Principal: Yes Version: Tied-to: 3 From: Definitive Path Targets Name Description Dip. Dir. TVD ft +N/-S ft +E/-W ft Map Map Northing Fasting ft ft Z-01A Polygon 91.70 -4090.30 -2305.49 5954980.00 596970.01 -Polygon 1 91.70 -4090.30 -2305.49 5954980.00 596970.01 -Polygon 2 91.70 -2517.00 -2534.76 5956550.00 596720.01 -Polygon 3 91.70 -2451.49 -2193.83 5956620.00 597060.01 -Polygon 4 91.70 X094.66 -1975.49 5954980.00 597300.01 Z-01A Fautt1 91.70 -3907.37 1262.55 5955210.00 600535.01 -Polygon 1 91.70 -3907.37 1262.55 5955210.00 600535.01 -Polygon 2 91.70 -4004.15 1396.30 5955115.00 600670.01 -Polygon 3 91.70 -4040.74 1515.84 5955080.E 600790.01 -Polygon 4 91.70 -4004.15 1396.30 5955115.00 600670.01 Z-01A Fault3 91.70 -6659.45 2141.38 5952470.01 601450.01 -Polygon 1 91.70 -6659.45 2141.38 5952470.01 601450.01 -Polygon 2 91.70 -6947.61 1997.55 5952180.01 601310.01 -Polygon 3 91.70 -6704.08 2490.85 5952430.01 601800.01 -Polygon 4 91.70 -6947.61 1997.55 5952180.01 601310.01 Z-01A Fault4 91.70 -8513.81 2446.96 5950620.01 601780.01 -Polygon 1 91.70 -8513.81 2446.96 5950620.01 601780.01 -Polygon 2 91.70 -8724.08 2464.18 5950410.01 601800.01 -Polygon 3 91.70 -8744.87 2523.92 5950390.01 601860.01 -Polygon 4 91.70 -8724.08 2464.18 5950410.01 601800.01 Z-01A Fauit2 91.70 -4419.95 1450.82 5954700.00 600730.01 -Polygon 1 91.70 -4419.95 1450.82 5954700.00 600730.01 -Polygon 2 91.70 X470.87 1520.16 5954650.00 600800.01 -Polygon 3 91.70 -4241.27 1553.20 5954880.00 600830.01 -Polygon 4 91.70 -4470.87 1520.16 5954650.00 600800.01 T1 8841.70 -3940.60 -2129.48 5955132.00 597144.01 T2 8941.70 -3671.01 -2170.93 5955401.00 597099.01 -Plan out by 37.47 at 8941.70 -3689.47 -2203.53 5955382.11 597066.65 <-- Latitude --> <-- Longitude -a Deg Min Sec Deg Min Sec 70 17 11.483 N 149 12 54.538 W 70 17 11.483 N 149 12 54.538 W 70 17 26.955 N 149 13 1.233 W 70 17 27.601 N 149 12 51.299 W 70 17 11.441 N 149 12 44.924 W 70 17 13.284 N 149 11 10.587 W 70 17 13.284 N 149 11 10.587 W 70 17 12.332 N 149 11 6.690 W 70 17 11.972 N 149 11 3.208 W 70 17 12.332 N 149 11 6.690 W 70 16 46.216 N 149 10 45.005 W 70 16 46.216 N 149 10 45.005 W 70 16 43.382 N 149 10 49.196 W 70 16 45.776 N 149 10 34.828 W 70 16 43.382 N 149 10 49.196 W 70 16 27.977 N 149 10 36.123 W 70 16 27.977 N 149 10 36.123 W 70 16 25.909 N 149 10 35.623 W 70 16 25.704 N 149 10 33.884 W 70 16 25.909 N 149 10 35.623 W 70 17 8.243 N 149 11 5.104 W 70 17 8.243 N 149 11 5.104 W 70 17 7.742 N 149 11 3.085 W 70 17 10.000 N 149 11 2.121 W 70 17 7.742 N 149 11 3.085 W 70 17 12.955 N 149 12 49.412 W 70 17 15.607 N 149 12 50.622 W 70 17 15.425 N 149 12 51.571 W "' N v~ ~ker Hughes INTEQ Planning port >uvTEQ ~~v Company: BP Amoco Date: 2/5/2006 Time: 15:28:52 Page: 2 Field: Prudhoe Bay Co-ordinate(NE) Reference: Well: Z-01, True Nor>tt Site: PB Z Pad Vertical ('f'VD) Reterence: 1 :01 6/28/1988 00:00 91.7 We0: Z-01 Section (VS) Reference: Well (O.OON,O.OOE,315.OOAzi) Wellpath: Plan 3, Z-01A Survey Calculation Method: Minimum Curvature Db: Orade Targets Map Map 4- Latitude --> 4- Longitude -a Name Description TVD +N/~ +E/-W Northing Fasting Deg Min Sec Deg Min Sec Dip. Dir. ft ft ft ft ft T3 8961.70 -2983.42 -2281.87 5956087.00 596979.01 70 17 22.369 N 149 12 53.860 W T4 9081.70 -2624.04 -2306.13 5956446.00 596950.01 70 17 25.903 N 149 12 54.570 W -Plan out by 18.06 at 9081.70 -2606.38 -2309.91 5956463.61 596945.99 70 17 26.077 N 149 12 54.681 W Annotatiop MD TVD ft ft 11500.00 8873.35 Tie to Z-01A Pilot Hole PIan3 11642.00 8913.04 2 11792.00 8942.90 3 11992.00 8951.68 4 12292.00 8959.60 5 12492.00 8962.93 6 12654.00 8992.64 7 12900.00 9081.49 TD Plan Section Information MD Intl Azim TVD +N/-S +E/-W DLS Build Turn TFO Target ft deg deg ft ft ft deg/100ft deg/100ft deg/100ft deg 11500.00 77.72 349.37 8873.35 -3954.18 -2202.19 0.00 0.00 0.00 0.00 11642.00 69.99 5.20 8913.04 -3818.56 -2208.99 12.00 -5.44 11.15 119.00 11792.00 86.98 359.13 8942.90 -3672.28 -2203.69 12.00 11.33 -4.05 340.00 11992.00 88.06 335.13 8951.68 -3478.93 -2247.89 12.00 0.54 -12.00 272.00 12292.00 89.02 11.13 8959.60 -3186.06 -2283.16 12.00 0.32 12.00 89.00 12492.00 89.10 347.13 8962.93 -2987.57 -2286.19 12.00 0.04 -12.00 270.00 12654.00 69.66 347.13 8992.64 -2833.09 -2321.50 12.00 -12.00 0.00 180.00 12900.00 68.98 18.72 9081.49 -2606.89 -2310.09 12.00 -0.28 12.84 97.00 Survey MD Intl Azim Sys TVD N/S E/W MapN MapE DLS VS TFO Tool ft deg deg ft ft ft ft ft deg/100ft ft deg 11500.00 77.72 349.37 8781.65 -3954.18 -2202.19 5955117.46 597071.48 0.00 -1238.84 0.00 MWD 11525.00 76.28 352.08 8787.28 -3930.15 -2206.12 5955141.44 597067.24 12.00 -1219.07 119.00 MWD 11550.00 74.87 354.81 8793.51 -3906.10 -2208.89 5955165.45 597064.16 12.00 -1200.11 118.39 MWD 11575.00 73.49 357.58 8800.32 -3882.10 -2210.49 5955189.42 597062.24 12.00 -1182.01 117.71 MWD 11600.00 72.15 0.39 8807.71 -3858.22 -2210.91 5955213.29 597061.50 12.00 -1164.82 116.96 MWD 11625.00 70.85 3.24 8815.64 -3834.53 -2210.16 5955236.99 597061.94 12.00 -1148.60 116.13 MWD 11642.00 69.99 5.20 8821.34 -3818.56 -2208.99 5955252.97 597062.90 12.00 -1138.14 115.22 MWD 11650.00 70.89 4.86 8824.02 -3811.05 -2208.33 5955260.49 597063.46 12.00 -1133.30 340.00 MWD 11675.00 73.72 3.79 8831.62 -3787.30 -2206.53 5955284.25 597064.94 12.00 -1117.77 340.12 MWD 11700.00 76.54 2.76 8838.04 -3763.18 -2205.15 5955308.39 597066.01 12.00 -1101.69 340.44 MWD 11725.00 79.38 1.75 8843.25 -3738.75 -2204.19 5955332.82 597066.64 12.00 -1085.10 340.70 MWD 11750.00 82.21 0.76 8847.25 -3714.08 -2203.65 5955357.50 597066.86 12.00 -1068.04 340.91 MWD 11775.00 85.05 359.79 8850.02 -3689.24 -2203.53 5955382.34 597066.65 12.00 -1050.56 341.07 MWD 11792.00 86.98 359.13 8851.20 -3672.28 -2203.69 5955399.29 597066.27 12.00 -1038.45 341.18 MWD 11800.00 87.02 358.17 8851.62 -3664.30 -2203.88 5955407.27 597065.97 12.00 -1032.67 272.00 MWD 11825.00 87.13 355.17 8852.90 -3639.38 -2205.33 5955432.17 597064.19 12.00 -1014.02 272.05 MWD 11850.00 87.25 352.16 8854.12 -3614.56 -2208.09 5955456.94 597061.11 12.00 -994.53 272.20 MWD 11875.00 87.38 349.16 8855.29 -3589.92 -2212.14 5955481.53 597056.73 12.00 -974.24 272.35 MWD 11900.00 87.51 346.16 8856.41 -3565.53 -2217.47 5955505.85 597051.08 12.00 -953.22 272.49 MWD 11925.00 87.65 343.16 8857.47 -3541.44 -2224.08 5955529.84 597044.16 12.00 -931.52 272.63 MWD 11950.00 87.80 340.17 8858.46 -3517.73 -2231.94 5955553.44 597035.99 12.00 -909.19 272.75 MWD 11975.00 87.95 337.17 8859.39 -3494.46 -2241.02 5955576.59 597026.59 12.00 -886.32 272.87 MWD 11992.00 88.06 335.13 8859.98 -3478.93 -2247.89 5955592.03 597019.52 12.00 -870.47 272.98 MWD 12000.00 88.08 336.09 8860.25 -3471.64 -2251.19 5955599.27 597016.12 12.00 -862.99 89.00 MWD 12025.00 88.13 339.09 8861.08 -3448.55 -2260.72 5955622.23 597006.29 12.00 -839.92 88.97 MWD 12050.00 88.19 342.09 8861.88 -3424.98 -2269.02 5955645.68 596997.68 12.00 -817.39 88.87 MWD 12075.00 88.26 345.09 8862.65 -3401.02 -2276.08 5955669.55 596990.31 12.00 -795.45 88.77 MWD 12100.00 88.33 348.09 8863.40 -3376.71 -2281.87 5955693.78 596984.20 12.00 -774.17 88.68 MWD „N ~iker Hughes INTEQ Planning~ort uvTEQ ~~o Company: BP Amoco Date: 2/5/2006 Time: 15:28:52 Page: 3 Field: Prudhoe Bay Co-ordieate(NE) lltefereuce: Well: Z-01, True Nortl~ Site: PB Z Pad Vertical (TVD) Reference: 1 :01 6/28N 988 00:00 91.7 Well: Z-01 Sectlon (VS) Reference: Well (O.OON,O.OOE,315.OOAzi) Wellpath: Plan 3, Z-01A Survey Calculatloa Metbod: Minimum Curvature Db: Orade Survey MD lucl Azim Sys TVD N/S E/W MapN MspE DLS VS TFO Tool ft deg deg ft ft ft ft ft deg/100ft ft deg 12125.00 88.41 351.09 8864.11 -3352.13 -2286.39 5955718.29 596979.36 12.00 -753.60 88.59 MWD 12150.00 88.49 354.09 8864.78 -3327.35 -2289.61 5955743.02 596975.81 12.00 -733.80 88.50 MWD 12175.00 88.57 357.09 8865.42 -3302.44 -2291.53 5955767.91 596973.56 12.00 -714.82 88.42 MWD 12200.00 88.66 0.09 8866.03 -3277.46 -2292.14 5955792.88 596972.62 12.00 -696.72 88.35 MWD 12225.00 88.75 3.09 8866.59 -3252.48 -2291.45 5955817.86 596972.98 12.00 -679.55 88.27 MWD 12250.00 88.85 6.09 8867.12 -3227.56 -2289.45 5955842.80 596974.65 12.00 -663.35 88.21 MWD 12275.00 88.95 9.09 8867.60 -3202.79 -2286.15 5955867.61 596977.63 12.00 -648.16 88.14 MWD 12292.00 89.02 11.13 8867.90 -3186.06 -2283.16 5955884.38 596980.39 12.00 -638.44 88.09 MWD 12300.00 89.02 10.17 8868.04 -3178.20 -2281.69 5955892.26 596981.76 12.00 -633.93 270.00 MWD 12325.00 89.02 7.17 8868.46 -3153.49 -2277.92 5955917.01 596985.20 12.00 -619.12 270.02 MWD 12350.00 89.02 4.17 8868.89 -3128.62 -2275.45 5955941.91 596987.34 12.00 -603.28 270.07 MWO 12375.00 89.03 1.17 8869.32 -3103.65 -2274.29 5955966.89 596988.18 12.00 -586.45 270.12 MWD 12400.00 89.04 358.17 8869.74 -3078.66 -2274.43 5955991.88 596987.70 12.00 -568.67 270.17 MWD 12425.00 89.05 355.17 8870.15 -3053.71 -2275.89 5956016.80 596985.92 12.00 -550.00 270.22 MWD 12450.00 89.07 352.17 8870.56 -3028.87 -2278.64 5956041.60 596982.83 12.00 -530.49 270.27 MWD 12475.00 89.09 349.17 8870.96 -3004.20 -2282.70 5956066.21 596978.45 12.00 -510.18 270.32 MWD 12492.00 89.10 347.13 8871.23 -2987.57 -2286.19 5956082.79 596974.74 12.00 -495.95 270.37 MWD 12500.00 88.14 347.13 8871.42 -2979.77 -2287.97 5956090.57 596972.86 12.00 -489.18 180.00 MWD 12525.00 85.14 347.13 8872.89 -2955.45 -2293.53 5956114.82 596966.98 12.00 -468.04 180.00 MWD 12550.00 82.14 347.13 8875.66 -2931.23 -2299.07 5956138.96 596961.12 12.00 X47.00 180.00 MWD 12575.00 79.14 347.13 8879.72 -2907.18 -2304.56 5956162.92 596955.31 12.00 -426.12 180.00 MWD 12600.00 76.14 347.13 8885.07 -2883.38 -2310.00 5956186.65 596949.56 12.00 -405.44 180.00 MWD 12625.00 73.14 347.13 8891.69 -2859.88 -2315.37 5956210.08 596943.88 12.00 -385.02 180.00 MWD 12650.00 70.14 347.13 8899.56 -2836.75 -2320.66 5956233.13 596938.29 12.00 -364.93 180.00 MWD 12654.00 69.66 347.13 8900.94 -2833.09 -2321.50 5956236.78 596937.40 12.00 -361.75 180.00 MWD 12675.00 69.37 349.80 8908.29 -2813.82 -2325.43 5956256.00 596933.21 12.00 -345.34 97.00 MWD 12700.00 69.09 352.99 8917.16 -2790.71 -2328.93 5956279.06 596929.41 12.00 -326.53 96.06 MWD 12725.00 68.86 356.20 8926.13 -2767.48 -2331.13 5956302.25 596926.91 12.00 -308.55 94.93 MWD 12750.00 68.69 359.41 8935.18 -2744.20 -2332.02 5956325.52 596925.71 12.00 -291.45 93.78 MWD 12775.00 68.59 2.63 8944.29 -2720.92 -2331.61 5956348.80 596925.81 12.00 -275.29 92.62 MWD 12800.00 68.54 5.85 8953.43 -2697.72 -2329.89 5956372.02 596927.23 12.00 -260.10 91.45 MWD 12825.00 68.56 9.08 8962.57 -2674.65 -2326.87 5956395.12 596929.94 12.00 -245.92 90.27 MWD 12850.00 68.64 12.30 8971.70 -2651.78 -2322.55 5956418.04 596933.96 12.00 -232.80 89.09 MWD 12875.00 68.78 15.51 8980.78 -2629.18 -2316.95 5956440.72 596939.25 12.00 -220.78 87.91 MWD 12900.00 68.98 18.72 8989.79 -2606.89 -2310.09 5956463.09 596945.82 12.00 -209.87 86.74 3.50" BP Alaska wW.TM..nu ~ TM~W O~wM M.~.Y~ ~M YI.IM.NA M.1M slur .a. u. n» IERAENCE Np.MTgN Coa.f.f IIO.Mra Wff C... fol. tiu llY. V.lal IhlAf.: ly.MC MfM sff IM ta..~M f~: Ufr p.re mA011AA0E1 14f.nl Opw W4wu: 1:M.4L1 GOOD 1.10 C.oYOn IlffieJ: 11YWAMn Cuvrn ~, ~6,l1i Fy_, MIS •f~ ley 111r :;ww ~Y.~~~ ~ t~ 3 ~ yL r't,... ~ Y a~ .J~~ti `i4 S ~. n.~nns~ rnw,cf..,s ~v. ~ ...rr .... no «w ww fy. ..p~er~f ~~pp~~ yy ~.yy //~1/J qtr pa» y~y~~~~~ yny..,~ .M IAIa ~.~IO .ifr~.yl~M. MfMMO 0.W •I.4 lN~.M .ffaM~lMr n ^~'0a°aii0'~n a°aim~.rwr. _ (T .s~ by ~f~~~ ,. i a r ~ is ~ ~ i i ,~ ~ .~ I I, i! is i i ~j ~' i ;~ ~... ~ i. i i i i ! ~~~ i ~ ' j ~ ~ y J ~ ~_ ~ ! 1 JeV j n~f ~ ~ .]~f~ .loft mN xMe xrn .m~] NW Clef ~ . . Ui ~ ~e~~ .ifM i6ao .inn ~ tau ~ .tta .pan .SOY .my ' ~y ~- coos „fm. of u.~.d.a o..c. 9mi a>-eeN c.,: i~o~i»~.~nra E.mr' ee ^*m..w'C...MU m. PI1A . (R R ~ • • • -Terri Hubble BF Exploration.. qK Inc.. A~ Boc a 19661.2 MB 7-5 9e, AK 9951 g PAY TO THE ~~DER OF y "Mastercard Check° as_6"25z 310 OA TE r p First National B ~ ~ ~ /Old. ~~ Anchorage, A~ank Alaska. 99501 MEMO PB,~I~p ~OLLAR$ •ZY 9,5 4~eJ ~' 1 2S 200060,;89146 2 27~556n• 03;0 • • W~>/1/ N ~~~~ ~ - o ~ /~--- PT~# Z o ~ - 0 3 ~ y ®evelapment Ser`~ice Exploratory- Stratigraphic Test Nan-Conventional W"ell Circle Appropriate d.etter /Paragraphs to be dnclaided in Transmittal d.etter CI-IECK ADD-ONS TEXT FOR APPROVAL LETTER WHAT (OPTIONS) ~~ APPLIES f ivIULTI LATERAL ~ The permit is for a new wellbore segment of existing !well i (If last two digits in ;Permit No. .:AP[ No. ~0- ~~ API number are - - between 60-69) Production should continue to be reported as a function of the original AP[ number stated above. ~~ ,PILOT HOLE In accordance with 20 .AAC 25.00~(f), all records, data and logs I acquired for the pilot hole must be clearly differentiated in both !well name ( PH) and API number ~~0- - -_~ from records, data and logs acquired for well SPACING The permit is approved subject to full compliance with 20 AAC EXCEPTION ~ 2~.0». Approval to perforate and produce -' iJect is contingent upon issuance of a conservation order approving a spacing ' exception. assumes the i liability of any protest to the spacing exception that may occur. '; DRY DITCH All dry ditch sample sets submitted to the Commission must be in SAMPLE ! no greater than 30' sample intervals from below the permafrost or from where samples are first caught and 10' sample intervals i through target zones. Non-Conventional 'Please note the following special condition of this permit: production or production testing of coal bed methane is not allowed ;Well 0 'for name of welly until after Com any Name) has designed and implemented a water well testing program to provide baseline data on water quality and quantity. (Company Name) must contact the ' Commission to obtain advance approval of such water well testing groeram. Rev: f 25:06 C',jody`transmittal checklist WELL PERMIT CHECKLIST Field & Pool PRUDHOE BAY, PRUDHOE OIL - 640150 _ Well Name: PRUDHOE BAY l1NIT Z-01A ---Program l)EV Well bore seg l ] PTD#:2060380 Company B_P__EXPLORATION_~ALASKA)_INC - __ _ __ _ Initial Classlfype pEV_ _! _1-O1L _ GeoArea 890 ___ Unit _1.1650 ___ On1Off Shore On _ _____ Annular Disposal ~~, Administration 1 Permit fee attached Yes This is a change of program, necessitated ,2 Lease number appropriate Yes bydrilling problems. after the well was spud. 13 Unique well. name and number _ Yes 20 AAC25.015 requires a new APD in this case. Because the. 4 Well located in_a_d_efinetl pool - - Yes well has not been completed,-the existing 5 Well located proper distance_f[pm tlrllling unit_boundary_ Yes permit will be revised. The new_program MI6 Well located proper distance-from other wells. Yes conforms to all administrative and 'i7 Sufficient acreage available in_drillinq unit Yes geological review items as previously.-RPC 8 If deviated, is wellbore plat included Yes j9 Operator only affected party- Yes _ 10 Operator has appropriate_bond in force Yes 11 Permit can be issued without conservation order- Yes X12 Permitcan be issued without administrative_approval Yes Appr Date 13 Can permit be approved before 15-day_wait_ Yes RPC 3/3112006 14 Well located within area and-strata authorized by Injection Order# (put 10# in_comments)_(For NA 15 All wells_within 114-mile area of review identified (For service well only) NA 16 Pre-produced infector; duration of pre-p[oduction I_ess_than 3 m4nths_(For service well_only) NA NA ~18 --- Conduckorstnng_provded - - - - NA Engineering X19 Surface casing protects aII known USDW& _ NA 120 CMT_vol adequaie_to circulate on conductor & surf csg NA_ 121 CMT vol adequate_to tie-in long string to surf csg_ _ _ _ _ _ _ _ _ _ _ _ _ _NA- ~22 CMT_will coverall knownproductive horizon_s_ _ - _ - _ _ - - Yes ~23 -Casing designs adequate for C,_T, B &_ permafrost- Yes 24 Adequate tankage_or reserve pit Yes CTDU. i25 If a_re-drill, has a 10.403 fo_r abandonment been approved Yes !26 Adequate wellbore separation_proposed_ _ - - - _ _ - _ Yes I27 If diverter required, does ii meet. regulations- NA Sidetrack. ',28 Drilling fluid- program schematic & equip list adequate Yes Max_ MW_9,6 ppg Appr Date x,29 BOPEs,_do they meetregulation _ _ _ _ _ _ _ -Yes WGA 11/2/2006 i30 BOPE_press rating appropriate; test to_(put prig in comments) - - Yes Test to 3500_ psi.. MSP 2770 psi. ~i31 Choke_manifold complieswlAPl_RP-53 (May 84)_ Yes 32 Work will occur without operation shutdown- Yes 33 Is presence cf H2$ gas- probable _ _ _ _ - - - - No_ _ _ _ 2Q ppm max pn pad. _ '34 Mechanical condition of wells within AOR verified (Fpr_se[vice well only) NA -- _ _ 35 Permitcan be issued wlo_hvdrogen-sulfide measures _ _ _ _ _ _ _ No ~. Geology x!36 Data_presented on_ potential pverpressure zones _ _ _ _ _ - - _ _ - _ - - _ NA_ 37 Seismic analysis_of shallow gas zones NA- - Appr Date 38 Seabed condition survey_(if off--share) NA_ RPC 3!3112006 ,39 Contact namelpho_ne for weekly_progress reports-[exploratory only] N_A_ Geologic Engineering Public Date: Date Date Commissioner: 1 Comm' sinner: Commis ne ~/~ Z~,. Q DTS J O6 9 ,~ 4~ ., '~ ~ ~ ) ~ ~ ~„' ~ ~ ~ ~j~ ~ ,~ ~~~ FRANK H. MURKOWSKI, GOVERNOR 1~T ~+ ~- -m7~taT o~ t>•1s`L`l~-7 f'f 333 W. 7'" AVENUE, SUITE 100 C~l~-7ERQAii01` C~r~II-7""~7''I~~ ;;' ANCHORAGE, ALASKA 99501-3539 1 PHONE (907) 279-1433 FAX (907) 276-7542 Aras Worthington CT Drilling Engineer BP Exploration (Alaska) Inc. PO Box 196612 Anchorage, AK 99519-6612 Re: Prudhoe Bay Field, Prudhoe Oil Pool, PBU Z-OlA BP Exploration (Alaska) Inc. Permit No: 206-038 Surface Location: 977' FNL, 3456' FEL, SEC. 19, T11N, R12E, UM Bottomhole Location: 3583' FNL, 812' FEL, SEC. 24, T 11 N, R 11 E, UM Dear Mr. Worthington: Enclosed is the approved application for permit to drill the above referenced development well. This permit to drill does not exempt you from obtaining additional permits or an approval required by law from other governmental agencies and does not authorize conducting drilling operations until all other required permits and approvals have been issued. In addition, the Commission reserves the right to withdraw the permit in the event it was erroneously issued. In accordance with 20 AAC 25.005(f), all records, data and logs acquired for the pilot hole must be clearly differentiated in both name PBU Z-OlA and API number 50-029-21830-01 PH from records, data and logs acquired for well PBU Z-0l. Operations must be conducted in accordance with AS 31.05 and Title 20, Chapter 25 of the Alaska Administrative Code unless the Commission specifically authorizes a variance. Failure to comply with an applicable provision of AS 31.05, Title 20, Chapter 25 of the Alaska Administrative Code, or a Commission order, or the terms and conditions of this permit may result in the revocation or suspension of the permit. When providing notice for a March 20, 2006 PBU Z-OlA Permit No: 206-038 representative of the Commission to witness any required test, contact the Commission's petroleum field inspector at (907) 659-3607 (pager). DATED this day of March, 2006 cc: Department of Fish 8a Game, Habitat Section w/o encl. Department of Environmental Conservation w/o encl. STATE OF ALASKA ~°' `'~~~ ALA~OIL AND GAS CONSERVATION COMM N ~~ MAR 1 7 2006 PERMIT TO DRILL ~~ 20 AAC 25.005 Alaska Oil & Gas Cons. COmmissi0n 1 a. Type of work ^ Drill ®Redrill ^ Re-Entry 1 b. Current Well Class ^ Exploratory ^ Development Gas ^ Service ^ Multiple Zone ^ Stratigraphic Test ®Development Oil ^ Single Zone 1 c. Specify if well is prig ^Coalbed Methane ^ Gas Hydrates ^ Shale Gas 2. Operator Name: BP Exploration (Alaska) Inc. 5. Bond: ®Blanket ^ Single Well Bond No. 6194193 11. Well Name and Number: PBU Z-01 A ~ 3. Address: P.O. Box 196612, Anchorage, Alaska 99519-6612 6. Proposed Depth: MD 12900 TVD 8990ss 12. Field /Pool(s): Prudhoe Bay Field / Prudhoe Bay 4a. Location of Well (Governmental Section): Surface: 977' FNL 3456' FEL 19 SEC T11 N R12E UM 7. Property Designation: ADL 028245 Pool , , . , , , Top of Productive Horizon: 5112' FNL, 4792' FEL, SEC. 19, T11 N, R12E, UM 8. Land Use Permit: 13. Approximate Spud Date: ~,, April 15, 2006 Total Depth: 3583' FNL, 812' FEL, SEC. 24, T11 N, R11 E, UM 9. Acres in Property: 2560 14. Distance to Nearest Property: 4,400' 4b. Location of Well (State Base Plane Coordinates): Surface: x- 599221 y- 5959100 Zone- ASP4 10. KB Elevation (Height above GL): 91.7' feet 15. Distance to Nearest well Within Pool: 200' 16. Deviated Wells: Kickoff Depth: 10345 feet Maximum Hole Angle: 92 de rees 17. Maximum Anticipated Pressures in psig (see 20 AA 35) Downhole: 3650 Surface: 2770 18. Casl ` P ram: tkma- T r Baffin -B ottom c2uan of , t c.f. or sacks Hole Casin Wei ht Grade Cou lin Len h MD TVD MD TVD includin sta a data 4-1/8" a-~~s• X 2aie• 6.2# / 6.4# L-80 CII / ST 2900' 10000' 8415' 12900' 8990 157 cu ft Class 'G' 19. PRESE NT; WELL CONDITION S UMMARY (To be completed for RedrNl and Re-entry Operations) Total Depth MD (ft): 10864 Total Depth TVD (ft): 9183 Plugs (measured): 9873 Effective Depth MD (ft): 10820 Effective Depth TVD }; 914 , Junk (measured): None Casin Le h Size Cement Volume MD TVD Conductor /Structural 110' 20' cu ds Concrete t1`0~ 110' Surface 2672' 13-3/8' 581 cu ft Permafrost 2672' 2672' Intermediate 10192' 9-5/8" 169 cu ft Class 'G' 10192' 8655' Liner 944' 7" 26 cu ft Class 'G' 9920' - 10864' 8445' - 9183' Perforation Depth MD (ft): 10552' - 10807' Perforation Depth TVD (ft): 8937' - 9138' 20. Attachments ®Filing Fee, $100 ®BOP Sketch ®Drilling Program ^ Time vs Depth Plot ^ Shallow Hazard Analysis ^ Property Plat ^ Diverter Sketch ^ Seabed Report ®Drilling Fluid Program ®20 AAC 25.050. Requirements 21. Verbal Approval: Commission Representative: Date: 22. I hereby certify that the foregoing is true and correct. Contact Aras Worthington, 564-4102 Printed Name Aras Worthington Title CT Drilling Engineer Prepared By Name/NUmber. Si nature Phone 564-4102 Date Terrie_Hubble, 564-4628 Commission Use Onl Permit To Drill Number: API Number: 50- 029-21830-01-00 Permit A royal Date: See cover letter for other requirements Conditions of Approval: If box is checked, well may not be used to explore for, test, or produce Coalbed meths gas hydrates, or gas contained shales: ~s- 'e Samples Req'd: ^ Yes o Mud Log Req'd: ^ Yes ~'No 1 ~5~ 1~~ ~t' ~O ~tj0 0 ~~' , HZS Measures: Yes Directional Survey Req'd:~Yes ^ No Other: APPROVED BY THE COMMISSION Date ` ~ o~ ~ ,COMMISSIONER Form 10-401 Revised 12/2005 ~ r'•" f ~ ~ /t ~ l~ ~ ~ Submit In Duplicate BP Prudhoe Bay Z-OlA CTD Sidetrack CTD Sidetrack Summary Rig Work: ~ 1) MIRU Nordic 2 and test BOPE to 250 psi low and 3500 psi high. 2) Mi113.8" window @ 10,345' MD. 3) Drill 4-1/8" open hole (pilot hole), 1,575' sidetrack through Zone 2, 3, & 4 target TD @ ~ ~11,920'MD. / 4) Log pilot hole & Plugback w/ cement to ~ 11,500' MD. 5) Openhole sidetrack @ 11,500' MD and drill lateral to -12,900' MD targeting Zone 2, 3, & 4; TD @ 12,900' MD. j 6) Run solid 3-3/16"x2-7/8" liner, cement and test to 2000 psi. 7) Cleanout liner and perforate for production (800' of perfs). 8) Freeze protect well and RDMO. Mud Program: • Well kill: 8.5 ppg brine • Milling/drilling ~8.6,ppg Flo Pro or biozan for milling, new Flo Pro for drilling. Disposal: • 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: • 3-3/16", 6.2#, L-80, TCII to 11,450' x 2-7/8", 6.4#, L-80, STL to 12,900' fully cemented liner. Top of liner to be at 0;,000' MD. • A minimum 28 bls 15.8 ppg cement will be used for liner cementing. Note: The very short liner lap is designe o provide room for a future sidetrack. A retrievable liner top packer will be installed to seal the liner lap and cover squeeze hole in the 4'/z" tubing. Well Control: • BOP diagram is attached. • Pipe rams, blind rams and the CT pack off will be pressure tested to 250 psi and to 3500 psi. ~ • The annular preventer will be tested to 250 psi and 2500 psi. Directional • See attached directional plan. • Magnetic and inclination surveys will be taken every 30 ft. No gyro will be run. • Distance to nearest property -4400 ft. • Distance to nearest well within pool - 200 ft. (Z-33A) Logging • MWD directional, Gamma Ray, and Resistivity will be run over all of the open hole section. MCNL log will be run across the cemented liner. Hazards • The maximum recorded H2S level on Z Pad i 20 ~pm. • Lost circulation risk is moderate. Reservoir Pressure • Res. press. is estimated to be 3650 psi at 8800'ss (8.Oppg EMW). Max. surface pressure with gas (0.10 psi/ft) to surface is 2770 psi. ~ VELLHEAD= ,GfiUATOR `` MCEVOY ~ OTIS i I SA ~ TES: :B. ELEV = 91.73' .F. ELEV = 57.28' :OP = 3000' 200fi' 3-1/2" OTIS SSSV LAND. NIP, ~ = 2.75" 4ax Angle = 43 @ 9054' tatum MD = 10497' Yatum TV D = 8800' SS 13-3/8" CSG, 68#, L-80, ~ = 12.415" ~-i 2672' GAS LIFT MANDRELS Minimum ID = 2.750" @ 2006' 3-1/2" OTIS SSSV NIPPLE TOP OF 7" LNR ~-{ 9920• 1/2" TBG, 9.2#, L-80, .0087 bpf, ~ = 2.992" 9967' 9-518" CSG, 47#, NT-8os, ~ = 8.681" 10191' PERFORATION SUMMARY REF LOG: CET76HCS ON 07/21/88 ANGLE AT TOP PERF: 38 @ 10552' Note: Refer to Production DB for historical pert data SQE SPF WTEE2VAL Opn/Sqz DATE 2-1/8" 4 10552 - 10584 C 06/22/90 2" 6 10592 - 10632 C 03/17/05 5" 4 10642 - 10807 C 07/21 /88 2-1/8" 4 10676 - 10685 C 06/22!90 2-1/8" 4 10676 - 10685 C 06/28/90 2-1/8" 4 10685- 10710 C 03/02/91 PBTD I 7" LNR, 26#, L-80, .0383 bpf, ID = 6.276" I >T MD TVD DEV TYPE VLV LATCH PORT DATE 5 3108 3013 13 OTIS DMY RM 0 4 6357 5665 41 OTIS DMY RM 0 3 8280 7134 41 OTIS DMY RM 0 2 9258 7847 43 OTIS DMY RA 0 1 9699 8180 39 OTIS *`DM RM 0 08/18/05 97~' I-1 3-1l2" OTIS XA SLIDING SLEEVE, ID = 2.750" 9859' 9-5/8" x 4-1 /2" TMI HBBP PKR, ID = 4.0" 9901' 3-1/2" OTIS X NIP, ID = 2.750" 9873' SLM 3-1/2" PX RUG (08!29/05) 9934' 3-1/2" OTIS X N~', ID = 2.750" 9967' 3-1/2" TBG TAL., ELMD TT LOGGED 01/19/91 10517' I-i MARKER JOINT' DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 07/23/88 . ORIGINAL COMPLETION 09/25/05 TWS/TLH PX RUG SET (08/29/05) WELL: Z-01 05/22/01 RNITP CORRECTIONS PERMIT No: 88-0660 02/03/05 VECO/TLH TREEHEAD CORRECTION API No: 50-029-21830-00 03/17/05 LDK/PJC PERFORATION SEC 19, T11 N, R12E, 977' FNL & 3456' FEL 05/18/05 KSB/PJC GLV GO 08/25105 KSB/TLH GLV GO (08/18/05) BP Exploration (Alaska) TrZEE= ,. 3-1/8" MCEVOY WELLHEAD= MCEVOY ACTUATOR = _ T OTIS KB. ELEV = 91.73' BF. ELEV = 57.28' KOP = 3000' Max Angle = 43 @ 9054' Datum MO =__ _ 10497' Datum TV D = 8800' SS 13-3/8" CSG, 68#, L-80, ID = 12.415" ~-~ 2672' Z-01A, [ Proposed CTD Sidetrack 2000' ~-~4-1/2" SSSV LAND. NIP, ID= GAS LIFT MANDRELS TYPE VLV LATCH TOP OF 7" LNR 4-1/2" T9 5/8?CSG, 47#, NT-SOS, IID = 8.681" 1 PERFORATION SUMMARY REF LOG: CET/BFICS ON 07121/8£t ANGLE AT TOPPERF:38 @ 1055' Note: Refer to Production DB for historical perf data SIZE SPF INTERVAL Opn/Sqz DATE 2-1/8" 4 10552 - 10584 isolated propos 2" 6 10592 - 10632 isolated propose. 5" 4 10642 - 10807 isolated propose 2-1/8" 4 10676 - 10685 isolated propose', 2-1/8" 4 10676 - 10685 isolated propose! 2-1/8" 4 10685 - 10710 isolated proposed PBTD 7" LNR, 26#, L-80, .0383 bpf, ID = 6.276" 9700' - -i 4-1/2" OTIS X NIP, ID = 3.813" 9750' Symphony Dow Whole PSI Guy 9800' 9-5/8" x 4-1/2" PKR, ID = 4.0" 9$20' 4-1/2" OTIS X NIP, ID = 3.813" 10000' Top of Cement 10000' TOP OF 3-3/16" LNR 10010' 3.5" XN Nip 2.75" ID 10100' ~~4-1/2"TBGTA IL) ~ (I w ire) 3-3/16" X 2-7/8" cmt'ed and perfed~ 12900' j 10345' Mechanical Whipstock 11800' 3-3/16 x 2-7/8 X-over 10400' 10517' DATE REV BY COMMENTS DATE REV BY COMMENTS 07/23/88 ORIGINAL COMPLETION 09!25/05 TWS/TLH PX PLUG SET (08/29/05) 05/22/01 RN/TP CORRECTIONS 01/18!06 KSB/TLH PX PLUG PULLED/WRPSET 02/03/05 VECO/TLH TREEHEADCORRECTION 03/17/05 LDIVPJC PERFORATION 05/18/05 KSB,'PJC GL V CIO ., ... ._.. __._-..._ _ l ,_........ .-__._._..P..~.....-.._____.__._-..~..__li~-...~.~. 1~.__ .............__..- i~._-_.__..__.__.._~.~ 11500' Pilot hole plugbac ~ 11920' -~ Pilot Hole Top P&A Cement {MARKER JOINT PRUDHOE BAY UNfT WELL: Z-01 PERMIT No: 88-0660 API No: 50-029-21830-00 SEC 19, T11 N, R12E, 977' FNL 8 3456' FEL BP Exploration (Alaska) NN • Anticollision Report ~ >i>vTEQ ~~~ Company: BP Amoco Date::. 2/5/2006 Time: 13:1.8:39 Page: 1 Field: Prudhoe. Bay Reference Site: PB Z Pad Co-ordinate(NE) Refe rence: Weil: Z-01, True North Refereece Well: Z-01 Vertical ('1' VD) Reference: 1:01 6/28/1988 00:00 91.7 .Reference Wellpath: Plan 3, Z-01A Pilot Hole Db: Oracle NO GLOBAL SCAN: Using user defined selection & scan criteria Reference: Principal Plan & PLANNED PROGRAM Interpolation Method: MD Interval: 100.00 ft Error Model: ISCWSA Ellipse Depth Range: 10300.00 to 11917.93 ft Scan Method: Trav Cylinder North Maximum Radius: 1388.02 ft Error Surface: Ellipse + Casing Survey Program for Definitive Wellpath Date: 2/5/2006 Validated: No Version: 2 Planned From To Survey Toolcode Tool N ame ft ft 100.00 10300.00 1 : Schlumberger GCT multishot GCT-MS Schlumberger GCT muttishot 10300.00 11917.93 Planned: Plan #3 V16 MWD MWD -Standard Casing Points MD TVD Diameter Hole Size Name ft ,ft in in 11917.93 9081.66 3.500 4.500 3.50" Summary Offset Welipsth ~ Reference Offset Ctr-Ctr No-Go ABewable Site Weh Wellpath MD MD Distance Area .Deviation Warning tt ft ft ft ft PB Z Pad - ExpansiorPlan Ivi Z-41 p Plan Ivi Z-41 p VO Plan 10738.40 10100.00 900.97 169.93 731.04 Pass: Major Risk PB Z Pad - ExpansioiPlan Ivi Z~1 Plan Z-41 V1 Plan: Pla Out of range PB Z Pad Plan Z-41 (slot 34 a Plan Z-41 V5 Plan: Pla Out of range PB Z Pad Plan Z-41 (slot 34 a Plan Z-41 PB1 V5 Plan: Out of range PB Z Pad Z-01 Plan 3, Z-01A VO Plan: 1 1598.95 11600.00 9.58 217.83 -208.26 FAIL: Major Risk PB Z Pad Z-01 Z-01 V1 1 0300.00 10300.00 0.00 203.96 -203.96 FAIL: Major Risk PB Z Pad Z-33 Plan Z-336 V2 Plan: PI Out of range PB Z Pad Z-33 Z-33A V1 1 1894.11 11600.00 486.30 212.41 273.89 Pass: Major Risk Site: PB Z Pad -Expansion 2004 Well: Plan Ivi Z-41 p Rule Assigned: Major Risk Wellpath: Plan Ivi Z-41 p VO Plan: Ivi Z-41 p wp02 V2 Inter-Site Error: 0.00 ft :Reference Offset Semi-MajorAais Ctr-Ctr No-Go Allowable MD TVD MD TVD Ref Offset TFO+A ZI TFO-AS Casing/HSflistance Ara Deviation Warning ft ft ft ft ft ft deg deg in ft ft ft 10660.09 8813.24 9600.00 7834.95 27.69 24.73 225.21 335.57 8.500 1067.30 141.33 925.97 Pass 10679.94 8812.29 9700.00 7912.92 27.29 24.19 223.54 331.51 8.500 1015.68 147.79 867.89 Pass 10700.00 8811.35 9800.00 7990.88 26.89 23.60 221.40 326.96 8.500 970.88 154.07 816.82 Pass 10714.58 8810.68 9900.00 8068.77 26.62 23.20 218.07 321.88 8.500 934.26 160.22 774.04 Pass 10728.08 8810.08 10000.00 8145.68 26.37 22.72 214.05 316.24 8.500 910.21 165.52 744.69 Pass 10738.40 8809.62 10100.00 8221.06 26.20 22.35 209.24 310.19 8.500 900.97 169.93 731.04 Pass 10745.82 8809.29 10200.00 8294.53 26.07 22.11 203.96 304.02 8.500 907.25 173.07 734.18 Pass 10750.00 8809.11 10300.00 8365.74 26.00 21.99 198.44 298.00 8.500 928.84 174.95 753.89 Pass 10750.00 8809.11 10400.00 8434.34 26.00 22.05 192.81 292.36 8.500 964.73 176.03 788.70 Pass 10750.00 8809.11 10500.00 8500.00 26.00 22.10 187.74 287.29 8.500 1013.25 175.90 837.35 Pass 10750.00 8809.11 10600.00 8562.39 26.00 22.13 183.32 282.87 8.500 1072.47 174.93 897.55 Pass 10750.00 8809.11 10700.00 8621.22 26.00 22.14 179.55 279.10 8.500 1140.47 173.44 967.03 Pass 10750.00 8809.11 10800.00 8676.20 26.00 22.13 176.39 275.95 8.500 1215.47 171.71 1043.75 Pass 10740.96 8809.50 10900.00 8727.05 26.15 22.55 172.67 273.31 8.500 1295.80 172.10 1123.70 Pass 10735.18 8809.76 11000.00 8773.54 26.25 22.80 169.85 271.19 8.500 1380.20 171.84 1208.36 Pass Site: PB Z Pad We-1: Z-01 Rule Assigned: Major Risk Wellpath: Plan 3, Z-01A V0 Plan: Plan #3 V2 Inter-Site Error: 0.00 ft Reference Offset Semi-Major Azis Ctr-Ctr No-Go Allowable MD TVD MD TVD Ref Offset TFO+AZI 1'FO-HS Casing/H93istance Area Deviation Warning ft ft ft ft ft ft deg deg in ft ft ft 10300.00 8738.53 10300.00 8738.53 32.29 32.03 226.37 0.00 3.500 0.00 203.52 -203.52 FAIL 10400.00 8808.74 10400.00 8808.74 31.20 30.84 226.56 0.00 3.500 0.00 190.97 -190.97 FAIL 10500.00 8821.35 10500.00 8821.35 31.08 30.75 230.41 0.00 3.500 0.00 169.07 -169.07 FAIL 10600.00 8816.20 10600.00 8816.20 28.97 28.69 242.43 0.00 3.500 0.00 163.29 -163.29 FAIL 10700.00 8811.35 10700.00 8811.35 26.89 26.66 254.44 0.00 3.500 0.00 157.72 -157.72 FAIL 10800.00 8807.01 10800.00 8807.01 25.25 25.06 266.45 0.00 3.500 0.00 153.44 -153.44 FAIL 10900.00 8803.38 10900.00 8803.38 24.26 24.10 278.45 0.00- 3.500 0.00 151.04 -151.04 FAIL 11000.00 8802.24 11000.00 8802.24 23.97 23.81 290.06 0.00 3.500 0.00 150.30 -150.30 FAIL vN • Anticollision Report ~ uvT>EQ ~~a Companys BP Amoco Date: :2/5/2006... Time: 13:18:39 Page: 2 Field: Prudhoe: Bay Reference Site:. PB Z Pad Co-ordinate(1~E) References W811: Z-01, True North Reference Well: Z-01 Vertical (1'VD) Reference: 1:01 6/28/1988 00:00 91.7 Reference Wellpath: Plan 3, Z-01APilot Hofe Db: Orate Site: PB Z Pad Well: Z-01 Rule Assigned: Major Risk Wellpath: Plan 3, Z-01A VO Plan: Plan #3 V2 Inter-Site Error: 0.00 ft Reference Offset Semi-Major Axis Ctr-Ctr No-Go Allowable MD TVD MD TVD Ref Offset'. TFO+A21 TFO-HS Casing/HSDistance Area Deviation Warning ft ft ft ft ft ft deg ' deg- in ft ft ft 11100.00 8806.79 11100.00 8806.79 24.57 24.41 301.62 0.00 3.500 0.00 151.73 -151.73 FAIL 11200.00 8816.92 11200.00 8816.92 26.02 25.84 313.27 0.00 3.500 0.00 155.11 -155.11 FAIL 11300.00 8832.19 11300.00 8832.19 28.03 27.81 325.08 0.00 3.500 0.00 159.52 -159.52 FAIL 11400.00 8851.91 11400.00 8851.91 30.19 29.94 337.09 0.00 3.500 0.00 163.79 -163.79 FAIL 11500.00 8873.35 11500.00 8873.35 32.10 31.78 349.37 0.00 3.500 0.00 167.80 -167.80 FAIL 11598.95 8899.82 11600.00 8899.41 32.14 31.75 73.33 87.38 3.500 9.58 217.83 -208.26 FAIL 11688.87 8937.34 11700.00 8929.74 31.98 31.50 57.75 78.78 3.500 44.72 201.11 -156.40 FAIL 11762.46 8976.83 11800.00 8943.32 31.90 31.41 37.01 64.67 3.500 96.66 169.28 -72.62 FAIL 11822.19 9014.02 11900.00 8948.11 31.84 31.45 22.29 56.19 3.500 157.24 148.75 8.49 Pass 11874.01 9049.53 12000.00 8951.95 31.79 31.59 10.40 50.55 3.500 218.57 140.62 77.95 Pass Site: PB Z Pad Well: Z-01 Rule Assigned: Major Risk Wellpath: Z-01 V1 Inter-Site Error: 0.00 ft Reference Offset - Semi-Major Azis Ctr-Ctr No-Go Allowable MD TVD MD TVD Ref Offset TFO+A2;I TFO-HS Casing/H~istauce Area Deviafion Warning ft ft ft ft ft ft deg ' deg in ft ft ft 10300.00 8738.53 10300.00 8738.53 32.29 32.29 226.37 0.00 0.00 203.96 -203.96 FAIL 10397.09 8807.37 10400.00 8816.95 31.23 31.60 46.18 179.62 10.95 169.69 -158.75 FAIL 10458.01 8823.16 10500.00 8895.67 31.55 32.33 46.23 179.67 72.54 137.16 -64.63 FAIL 10509.74 8820.84 10600.00 8974.51 30.88 32.13 51.66 180.08 153.88 131.67 22.21 Pass 10566.41 8817.91 10700.00 9053.58 29.70 31.36 59.95 181.56 236.07 130.97 105.09 Pass 10621.26 8815.14 10800.00 9132.80 28.51 30.55 68.49 183.50 318.65 129.29 189.37 Pass 10654.93 8813.49 10864.00 9183.49 27.80 30.05 73.89 184.86 371.77 127.78 244.00 Pass Site: PB Z Pad Well: Z-33 Rule Assigned: Major Risk Wellpath: Z-33A V1 Inter-Site Error: 0.00 ft Reference Offset Semi-Major A=is Ctr-Gtr No-Go Allowable MD TVD MD TVD Ref Offset TFO+AZI TFO-HS Gssiug/H~istsace Area Deviation Warning ft ft ft ft ft > ft deg deg in ft ft ft 11894.11 9064.02 11600.00 8820.80 31.76 29.20 274.20 317.03 5.500 486.30 212.41 273.89 Pass 11883.16 9056.08 11650.00 8822.87 31.78 29.44 269.74 311.10 5.500 511.14 212.69 298.45 Pass ~~ ~er Hughes INTEQ Planning Dort 11vTEQ r~a Company: BP Amoco Date: ..2/5/2006 Time: 15:31:48 Page: 3 .Field:.. Prudhoe Bay Co-ordiuate(NE) Retereuce: Welf: Z-01, True: North Site: PB Z Pad Verticsl`(TVD) Refe rence: 1 :01 6/2$/4988'00:00 91.7 WeU: Z-01 SeM3on (VS) Reference: User (O.OON,O.OOE,315. OOAzi) Wellpath: Plan 3, Z-01A Pilot Hole Survey Calculation Method: Minimum Curvature Db: Oracle Survey MD Iacl Azim Sys TVD N/S E/W MapN MapE DLS VS TFO Tool ft `deg " deg ft ft ft ft t' degl100ft ft deg 10825.00 92.20 269.45 8714.33 -4341.36 -1722.17 5954736.69 597556.54 12.00 -1852.05 91.92 MWD 10850.00 92.09 272.45 8713.40 -4340.95 -1747.14 5954736.77 597531.56 12.00 -1834.10 92.04 MWD 10875.00 91.97 275.45 8712.51 -4339.23 -1772.06 5954738.16 597506.62 12.00 -1815.26 92.15 MWD 10900.00 91.85 278.45 8711.68 -4336.21 -1796.86 5954740.85 597481.79 12.00 -1795.59 92.26 MWD 10917.93 91.76 280.60 8711.11 -4333.24 -1814.54 5954743.58 597464.07 12.00 -1780.99 92.36 MWD 10925.00 91.53 281.41 8710.91 -4331.89 -1821.47 5954744.84 597457.12 12.00 -1775.13 106.00 MWD 10950.00 90.70 284.30 8710.42 -4326.33 -1845.84 5954750.08 597432.69 12.00 -1753.97 106.02 MWD 10975.00 89.87 287.18 8710.30 -4319.55 -1869.90 5954756.54 597408.54 12.00 -1732.17 106.08 MWD 11000.00 89.04 290.06 8710.54 -4311.57 -1893.59 5954764.21 597384.75 12.00 -1709.77 106.09 MWD 11025.00 88.21 292.95 8711.14 -4302.41 -1916.84 5954773.06 597361.39 12.00 -1686.85 106.07 MWD 11050.00 87.38 295.83 8712.10 -4292.10 -1939.59 5954783.07 597338.51 12.00 -1663.47 106.00 MWD 11075.00 86.57 298.72 8713.42 -4280.66 -1961.78 5954794.22 597316.17 12.00 -1639.70 105.89 MWD 11100.00 85.76 301.62 8715.09 -4268.12 -1983.34 5954806.46 597294.45 12.00 -1615.59 105.73 MWD 11125.00 84.96 304.52 8717.12 -4254.53 -2004.22 5954819.78 597273.39 12.00 -1591.21 105.54 MWD 11150.00 84.17 307.43 8719.48 -4239.91 -2024.36 5954834.13 597253.06 12.00 -1566.63 105.30 MWD 11175.00 83.40 310.35 8722.19 -4224.31 -2043.70 5954849.47 597233.52 12.00 -1541.92 105.03 MWD 11200.00 82.65 313.27 8725.22 -4207.77 -2062.19 5954865.77 597214.81 12.00 -1517.15 104.71 MWD 11225.00 81.92 316.21 8728.58 -4190.34 -2079.79 5954882.96 597196.98 12.00 -1492.38 104.36 MWD 11250.00 81.20 319.15 8732.25 -4172.05 -2096.44 5954901.02 597180.10 12.00 -1467.68 103.96 MWD 11275.00 80.51 322.11 8736.22 -4152.97 -2112.09 5954919.89 597164.19 12.00 -1443.12 103.53 MWD 11300.00 79.85 325.08 8740.49 -4133.15 -2126.71 5954939.52 597149.32 12.00 -1418.77 103.06 MWD 11325.00 79.21 328.06 8745.03 -4112.64 -2140.26 5954959.85 597135.50 12.00 -1394.69 102.56 MWD 11350.00 78.60 331.05 8749.84 -4091.49 -2152.69 5954980.83 597122.80 12.00 -1370.94 102.01 MWD 11350.79 78.58 331.15 8750.00 -4090.81 -2153.06 5954981.51 597122.41 12.00 -1370.20 101.44 T1 11375.00 78.02 334.06 8754.91 -4069.77 -2163.97 5955002.40 597111.23 12.00 -1347.60 101.42 MWD 11392.93 77.63 336.22 8758.69 -4053.86 -2171.34 5955018.20 597103.65 12.00 -1331.15 100.83 MWD 11400.00 77.61 337.09 8760.21 -4047.53 -2174.07 5955024.50 597100.83 12.00 -1324.73 91.00 MWD 11425.00 77.59 340.16 8765.58 -4024.79 -2182.97 5955047.12 597091.64 12.00 -1302.36 90.81 MWD 11450.00 77.60 343.23 8770.95 4001.61 -2190.64 5955070.19 597083.67 12.00 -1280.55 90.15 MWD 11475.00 77.64 346.30 8776.31 -3978.06 -2197.05 5955093.66 597076.94 12.00 -1259.36 89.49 MWD 11500.00 77.72 349.37 8781.65 -3954.18 -2202.19 5955117.46 597071.48 12.00 -1238.84 88.84 MWD 11517.93 77.79 351.58 8785.45 -3936.90 -2205.09 5955134.70 597068.36 12.00 -1224.57 88.18 MWD 11525.00 77.08 351.10 8786.99 -3930.08 -2206.13 5955141.50 597067.23 12.00 -1219.02 213.00 MWD 11550.00 74.58 349.40 8793.11 -3906.20 -2210.23 5955165.33 597062.81 12.00 -1199.22 213.10 MWD 11575.00 72.08 347.66 8800.28 -3882.73 -2214.99 5955188.73 597057.74 12.00 -1179.27 213.52 MWD 11600.00 69.60 345.87 8808.48 -3859.74 -2220.40 5955211.65 597052.04 12.00 -1159.19 214.02 MWD 11625.00 67.15 344.02 8817.70 -3837.30 -2226.43 5955234.00 597045.71 12.00 -1139.06 214.61 MWD 11650.00 64.71 342.11 8827.90 -3815.47 -2233.07 5955255.74 597038.78 12.00 -1118.92 215.29 MWD 11675.00 62.30 340.11 8839.05 -3794.30 -2240.31 5955276.81 597031.26 12.00 -1098.83 216.07 MWD 11697.74 60.13 338.22 8850.00 -3775.67 -2247.40 5955295.34 597023.94 12.00 -1080.66 216.96 T2 11700.00 59.92 338.03 8851.13 -3773.86 -2248.12 5955297.15 597023.18 12.00 -1078.85 217.87 MWD 11725.00 57.57 335.84 8864.10 -3754.20 -2256.49 5955316.70 597014.56 12.00 -1059.04 217.97 MWD 11735.85 56.56 334.86 8870.00 -3745.92 -2260.29 5955324.92 597010.65 12.00 -1050.50 219.10 T3 11750.00 55.26 333.54 8877.93 -3735.37 -2265.39 5955335.40 597005.41 12.00 -1039.43 219.64 MWD 11775.00 53.00 331.11 8892.58 -3717.43 -2274.79 5955353.21 596995.78 12.00 -1020.10 220.38 MWD 11800.00 50.79 328.53 8908.01 -3700.42 -2284.67 5955370.09 596985.67 12.00 -1001.09 221.80 MWD 11825.00 48.64 325.78 8924.18 -3684.40 -2295.01 5955385.97 596975.12 12.00 -982.45 223.39 MWD 11850.00 46.56 322.85 8941.03 -3669.40 -2305.77 5955400.82 596964.17 12.00 -964.24 225.17 MWD 11875.00 44.57 319.72 8958.54 -3655.48 -2316.92 5955414.60 596952.83 12.00 -946.50 227.15 MWD 11875.65 44.51 319.63 8959.00 -3655.13 -2317.22 5955414.94 596952.53 12.00 -946.04 229.34 Z-01A P 11900.00 42.66 316.36 8976.64 -3642.65 -2328.44 5955427.27 596941.14 12.00 -929.28 229.40 MWD 11917.93 41.36 313.80 8989.97 -3634.15 -2336.91 5955435.65 596932.56 12.00 -917.29 231.77 3.50" ORa•0r~ax ~ ~ew e. BP Alaska BAKE ~ ~} -~~ M.~~x...a^ wuuontortuu Nai'v~E~, V ~ a .,a.. „A. - , P s.. t„Taaa; . ~.~::~.~. ___ ; :mat ~,~€~~m~;>o ~~ ...e, ~^, ..aaam M.1. O.Cwr~ ~~O aVtL1fp 0000 ~f.lg1 som• om •om ai.m .:.m I 1 ~ I > . 1 t - f I - ......__ .. _ . 1 RERERENCE 01FORM.T ON I ~ i I i ~ ~ -r+ i ~ I u ++i h i ~ `-7 - (( wetl Cenua Z-01 true N0M ~ I 1 {. ~ I I VMlas flVO) ReMenu Synem. MeO~ See Leval ~ t I i - -'-i t 4 (i 1 I ! i - Memuree ~I R 1 aca'. i{:0 ~d19880~OW ~EB110 ' : 1 t I I 1 ~ - y~ ~y~ _. I ~j I. t I i i } I 1 ! Calla Non MNroa. Mm mum Cunalure 'am ~ I I I I 1 I I { 1 i I {I F . -: ! ~ .: I 1 ' i , ~ ~±i 1 I I :. I , t ~ ~ { t I _ I 1.: ; I I : ! 000T0000TYLa ~xe.0 _i li-1 ~, -F-i- I _, .ter "1, II I t'-+i-'... a! IM aMFO W.0 01a0 1ler tAw Ta.Oaa l I I i I - ~ ~ } + ! - I { ! -} F _ i jj{{ ~~} I 11 V 11 11 F 1- aearr ae'~ie assn eee~am NnM am:n % t eae ~Wae ~,~ { I + I ' I + ~ ~ - I ~-r} -`i +V - i i0~ ~.~ ~ ONLM ~ a.~ Aan.n aw.H ~~ i I i.., ~ + r ~~ aM.tO ,~ e~ f - 1 0 ;Wap 0eM ~1„.N ~aaM.M - I ~ ianip MJe itl.ae ~ .ee 1~~t0 ~JI tam Hl Y A~Hi.O JOfl ~~ I ~~-F I `+ 1- ~ i I t I i I t r L i I ~ f 1 I I I -. { y~ ~ I I I t I { I 11 1 t jll` 1 1 I t ~.l {~~ I :1 +I I! I 14 i .1 ruiner oEr.~ Jtat-~ ~, t~ I I I I+ i ~ -..~ ~+,~ F 1 +~ I I_}~ I I -I - 1~ { I ~- F 1 : t I FI i I 1~ I I. {{ 1 fl 1f I t{ 1 Na ..~ a.,b,. ~ .w.tt ..w ~ Jx»-1 i I + `:--~ j ;tl i I - i .~+.- 1 -~- +Tr +++- -+ asasus aw zatn vmao~ » + ~I I ~ i ~__, ~ I~ ~ I I xJ,...., eaaw tw~ib m «e°j..iioaiw r.., w v~ ~'w' ~ I j..; I i } f ri r~„-t .I .+ + n (( .te*.w ~m aaN v~oei r^av -aan - i. _• I. I - •{! --4 _`+t ~ ~. I'~1 i i - ~1 II 'i ~ I+ I 1 .... ... :.:. I I I'I I I i II, I I .aBM ~ I }-r ` + -i-- f~l }` i .T +~ ~t I i ~ I i-1-~-Fi J I ', +® •t I I li~ I III litl J>.e I 1~ I I{+' I ~ ', ~~ i 1 I I I~ Fi I{+~ I '. ~' 1 I I I I ~ I { III ~ - I ~1 I 141 1 • i ' I I I .. I .. _: I _ .-..... I f moo I li ~ ~. I I~ I ~ I I 1 ~ II ! ~. { I I i 1 i ii'IiI F II +® { 41 {}I{1{t j .~ . ~,. i i r + - ~ it t ~ -t-.-II ~I III L. I e.oo - I { I. hi I: 11i:_~_ ~i i ~ - rtl +1 - ~0m , ! I ' i ti F if ' ~ I I`.1 1 ~ I i I I-`.I ~I ,. .- { {hi t ~i+.rl ~. Mm I_. i I I I I I I ~ i I I I . ~ ~1 it ! ~ Jatxl + H ii~-i I i + J +i _ /~- I f 11 ~ i . i- ~ 1 1~-- i t -1 {I ~ „i.l 17_.i { --,f } { I I -}II ilkll ~ -F` i`rl { Flit . : ..,, ~ '~ IV • ,~ ~. + I --.-i- I I I i i 1 t r I ,. I I I I `C ~ { t i ,. , 1 ~ . J;» -+ ~+ r -r~-~~i . +ri~-.,+; ,;-.+,~ ~, r- - r-; r ~.. x,~ :n>= :x;,; ~., ~, ;.,. < <a . T, ~,,, , # ;;m N->J-l-'_;*r','+ ` ~ ' Jem Jaa ' ~ J.m JM. itH Jaex Jam ,.m JR! > r0. ` .t,m ; ^ nmt ,a. -,.a ~.... _~ ~ ~ I ~ I a'~ .. _- I . I I..I. ~,i I ' -Fi f- I~ ~ I I ` r I { I ,, II 1 r : , , I 1 Ft 1 4 ; ~I I I I I I I I I ~ ~ -; I I t ' ~ I eem + tj i I ~_ F -i } i' I i + i } I , ; +® I I i , ~ I _. ` ~ I I ~ , _ t 1 L . ! I i ~ ~ I I I i I ~ i ~ '~I amt tY I ~I ~..' I'- ~ }}. I I Ii ii~- i I I .naa mw.. ~ -a0m gem tam seta .reoo ~Im t>W .raeo .feoo .lain .iwo Mm tlMa -tam r1m ma Jm Jm 1m .am Jm am T Jd0 .ao ~.m Jm ]m ]m 1 .ata xtM ~tm ~m t V~xSbal 5oletbn K 575.00' [SORSn] Jeo PM • • y~ ~er Hughes INTEQ Planning l~rt 1NTEQ Company: BP Amoco Date: 2/5/2006 Time: 15:28:52 Page: 1 Field: ' 'Prudhoe Bay Co-ordinate(PiE) Reference: WeIL' Z-01, True North Site: PB;Z Pad Vertical (TVD) Reference: 1:01 6/28!1988 00:00 91.7 Well: Z-01 Section (VS) Reference: Well (O.OON,O.OOE,315.OOAzi) We0pat6: Plan 3, Z-01A Survey`Calculation Method: Minimum Curvature Db: Oracle Field: Prudhoe Bay North Slope UNITED STATES Map System:US State Plane Coordinate System 1927 Map Zone: Alaska, Zone 4 Geo Datum: NAD27 (Clarke 1866) Coordinate System: Well Centre Sys Datum: Mean Sea Level Geomagnetic Model: bggm2005 Site: PB Z Pad TR-11-12 UNITED STATES :North Slope Site Position: Northing: 5957230.17 ft Latitude: 70 17 33.051 N From: Map Fasting: 601304.82 ft Longitude: 149 10 47.365 W Position Uncertainty: 0.00 ft North Reference: True Ground Level: 0.00 ft Grid Convergence: 0.77 deg Well: Z-01 Slot Name: 01 Z-01 Well Position: +N/-S 1897.93 ft Northing: 5959100.02 ft Latitude: 70 17 51.714 N +E/-W -2058.52 ft Fasting : 599221.09 ft Longitude: 149 11 47.371 W Position Uncertainty: 0.00 ft Wellpath: Plan 3, Z-01A Drilled From: Plan 3, Z-01A Pilot Hole Tie-on Depth: 11500.00 ft Current Datum: 1:01 6/28/1988 00:00 Height 91.70 ft Above System Datum: Mean Sea Level Magnetic Data: 2/5/2006 Declination: 24.38 deg Field Strength: 57582 nT Mag Dip Aegle: 80.83 deg Vertical Section: Depth From (TVD) +N/-S +E/-W Direction ft ft ft deg 37.70 0.00 0.00 315.00 Plan: Plan #3 Date Composed: 2/5/2006 Copy Lamar's PIan3 Version: 3 Principal: Yes Tied-to: From: Definitive Path Targets Map Map <-- Latitude --> ~- Longitude -> Name.. Description TVD +N/-S +E/-W Northing Fasting Deg Min Sec Deg Min Sec Dip. Dir. ft ft ft ft ft Z-01A Polygon 91.70 -4090.30 -2305.49 5954980.00 596970.01 70 17 11.483 N 149 12 54.538 W -Polygon 1 91.70 -4090.30 -2305.49 5954980.00 596970.01 70 17 11.483 N 149 12 54.538 W -Polygon 2 91.70 -2517.00 -2534.76 5956550.00 596720.01 70 17 26.955 N 149 13 1.233 W -Polygon 3 91.70 -2451.49 -2193.83 5956620.00 597060.01 70 17 27.601 N 149 12 51.299 W -Polygon 4 91.70 -4094.66 -1975.49 5954980.00 597300.01 70 17 11.441 N 149 12 44.924 W Z-01A Fault1 91.70 -3907.37 1262.55 5955210.00 600535.01 70 17 13.284 N 149 11 10.587 W -Polygon 1 91.70 -3907.37 1262.55 5955210.00 600535.01 70 17 13.284 N 149 11 10.587 W -Polygon 2 91.70 ~I004.15 1396.30 5955115.00 600670.01 70 17 12.332 N 149 11 6.690 W -Polygon 3 91.70 -4040.74 1515.84 5955080.00 600790.01 70 17 11.972 N 149 11 3.208 W -Polygon 4 91.70 -4004.15 1396.30 5955115.00 600670.01 70 17 12.332 N 149 11 6.690 W Z-01A Fault3 91.70 -6659.45 2141.38 5952470.01 601450.01 70 16 46.216 N 149 10 45.005 W -Polygon 1 91.70 -6659.45 2141.38 5952470.01 601450.01 70 16 46.216 N 149 10 45.005 W -Polygon 2 91.70 -6947.61 1997.55 5952180.01 601310.01 70 16 43.382 N 149 10 49.196 W -Polygon 3 91.70 -6704.08 2490.85 5952430.01 601800.01 70 16 45.776 N 149 10 34.828 W -Polygon 4 91.70 -0947.61 1997.55 5952180.01 601310.01 70 16 43.382 N 149 10 49.196 W Z-01A Fault4 91.70 -8513.81 2446.96 5950620.01 601780.01 70 16 27.977 N 149 10 36.123 W -Polygon 1 91.70 -8513.81 2446.96 5950620.01 601780.01 70 16 27.977 N 149 10 36.123 W -Polygon 2 91.70 -8724.08 2464.18 5950410.01 601800.01 70 16 25.909 N 149 10 35.623 W -Polygon 3 91.70 -8744.87 2523.92 5950390.01 601860.01 70 16 25.704 N 149 10 33.884 W -Polygon 4 91.70 -8724.08 2464.18 5950410.01 601800.01 70 16 25.909 N 149 10 35.623 W Z-01A Fault2 91.70 -4419.95 1450.82 5954700.00 600730.01 70 17 8.243 N 149 11 5.104 W -Polygon 1 91.70 -4419.95 1450.82 5954700.00 600730.01 70 17 8.243 N 149 11 5.104 W -Polygon 2 91.70 -4470.87 1520.16 5954650.00 600800.01 70 17 7.742 N 149 11 3.085 W -Polygon 3 91.70 -4241.27 1553.20 5954880.00 600830.01 70 17 10.000 N 149 11 2.121 W -Polygon 4 91.70 X470.87 1520.16 5954650.00 600800.01 70 17 7.742 N 149 11 3.085 W T1 8841.70 -3940.60 -2129.48 5955132.00 597144.01 70 17 12.955 N 149 12 49.412 W T2 8941.70 -3671.01 -2170.93 5955401.00 597099.01 70 17 15.607 N 149 12 50.622 W -Plan out by 37.47 at 8941.70 -3689.47 -2203.53 5955382.11 597066.65 70 17 15.425 N 149 12 51.571 W ~~ ~er Hughes INTEQ Planning Dort uvTEQ r~o Company: BP Amoco Date: 2/5/2006. Time: `15:28:52 Page: 2 Field: Prudhoe Bay Co-ordinate(NE) Reference: ..Well: Z-01, True North Site: PB Z Pad Vertical (TVD)'Reference: 1 ;,01 6!28/1988 00:00 91.7 Well: Z-01 Section (VS}Reference: Well (O.OON,O.OOE,315. OOAzi) Wellpat6: Ptan 3, Z-01A Survey Calculation Method: ".Minimum Curvature Db: Oracle Targets Map Map ~-- Latltude --> <- Longitude -> Name Description TVD +N/-$ +E/-W Northing Eaating Deg Min Sec Deg Min Sec Di p. Dir. ,ft ft ft ft ft T3 8961.70 -2983.42 -2281.87 5956087.00 596979.01 70 17 22.369 N 149 12 53.860 W T4 9081.70 -2624.04 -2306.13 5956446.00 596950.01 70 17 25.903 N 149 12 54.570 W -Plan out by 18.06 at 9081.70 -2606.38 -2309.91 5956463.61 596945.99 70 17 26.077 N 149 12 54.681 W Annotation MD TVD ft ft 11500.00 8873.35 Tie to Z-01A Pilot Hole PIan3 11642.00 8913.04 2 11792.00 8942.90 3 11992.00 8951.68 4 12292.00 8959.60 5 12492.00 8962.93 6 12654.00 8992.64 7 12900.00 9081.49 TD Plan Section Information MD ` Inc! Azim TVD +N/S" +E/-W DLS Build Turn TFO Tsrget ft deg deg tt ft ft deg/1008 deg/100ft deg/1OOft deg 11500.00 77.72 349.37 8873.35 -3954.18 -2202.19 0.00 0.00 0.00 0.00 11642.00 69.99 5.20 8913.04 -3818.56 -2208.99 12.00 -5.44 11.15 119.00 11792.00 86.98 359.13 8942.90 -3672.28 -2203.69 12.00 11.33 -4.05 340.00 11992.00 88.06 335.13 8951.68 -3478.93 -2247.89 12.00 0.54 -12.00 272.00 12292.00 89.02 11.13 8959.60 -3186.06 -2283.16 12.00 0.32 12.00 89.00 12492.00 89.10 347.13 8962.93 -2987.57 -2286.19 12.00 0.04 -12.00 270.00 12654.00 69.66 347.13 8992.64 -2833.09 -2321.50 12.00 -12.00 0.00 180.00 12900.00 68.98 18.72 9081.49 -2606.89 -2310.09 12.00 -0.28 12.84 97.00 Survey MD Intl Azim Sys TVD N/S E/W MapN MapE DLS VS TFO Tool ft deg deg ft ft ft ft ft deg/100ft ft deg 11500.00 77.72 349.37 8781.65 -3954.18 -2202.19 5955117.46 597071.48 0.00 -1238.84 0.00 MWD 11525.00 76.28 352.08 8787.28 -3930.15 -2206.12 5955141.44 597067.24 12.00 -1219.07 119.00 MWD 11550.00 74.87 354.81 8793.51 -3906.10 -2208.89 5955165.45 597064.16 12.00 -1200.11 118.39 MWD 11575.00 73.49 357.58 8800.32 -3882.10 -2210.49 5955189.42 597062.24 12.00 -1182.01 117.71 MWD 11600.00 72.15 0.39 8807.71 -3858.22 -2210.91 5955213.29 597061.50 12.00 -1164.82 116.96 MWD 11625.00 70.85 3.24 8815.64 -3834.53 -2210.16 5955236.99 597061.94 12.00 -1148.60 116.13 MWD 11642.00 69.99 5.20 8821.34 -3818.56 -2208.99 5955252.97 597062.90 12.00 -1138.14 115.22 MWD 11650.00 70.89 4.86 8824.02 -3811.05 -2208.33 5955260.49 597063.46 12.00 -1133.30 340.00 MWD 11675.00 73.72 3.79 8831.62 -3787.30 -2206.53 5955284.25 597064.94 12.00 -1117.77 340.12 MWD 11700.00 76.54 2.76 8838.04 -3763.18 -2205.15 5955308.39 597066.01 12.00 -1101.69 340.44 MWD 11725.00 79.38 1.75 8843.25 -3738.75 -2204.19 5955332.82 597066.64 12.00 -1085.10 340.70 MWD 11750.00 82.21 0.76 8847.25 -3714.08 -2203.65 5955357.50 597066.86 12.00 -1068.04 340.91 MWD 11775.00 85.05 359.79 8850.02 -3689.24 -2203.53 5955382.34 597066.65 12.00 -1050.56 341.07 MWD 11792.00 86.98 359.13 8851.20 -3672.28 -2203.69 5955399.29 597066.27 12.00 -1038.45 341.18 MWD 11800.00 87.02 358.17 8851.62 -3664.30 -2203.88 5955407.27 597065.97 12.00 -1032.67 272.00 MWD 11825.00 87.13 355.17 8852.90 -3639.38 -2205.33 5955432.17 597064.19 12.00 -1014.02 272.05 MWD 11850.00 87.25 352.16 8854.12 -3614.56 -2208.09 5955456.94 597061.11 12.00 -994.53 272.20 MWD 11875.00 87.38 349.16 8855.29 -3589.92 -2212.14 5955481.53 597056.73 12.00 -974.24 272.35 MWD 11900.00 87.51 346.16 8856.41 -3565.53 -2217.47 5955505.85 597051.08 12.00 -953.22 272.49 MWD 11925.00 87.65 343.16 8857.47 -3541.44 -2224.08 5955529.84 597044.16 12.00 -931.52 272.63 MWD 11950.00 87.80 340.17 8858.46 -3517.73 -2231.94 5955553.44 597035.99 12.00 -909.19 272.75 MWD 11975.00 87.95 337.17 8859.39 -3494.46 -2241.02 5955576.59 597026.59 12.00 -886.32 272.87 MWD 11992.00 88.06 335.13 8859.98 -3478.93 -2247.89 5955592.03 597019.52 12.00 -870.47 272.98 MWD 12000.00 88.08 336.09 8860.25 -3471.64 -2251.19 5955599.27 597016.12 12.00 -862.99 89.00 MWD 12025.00 88.13 339.09 8861.08 -3448.55 -2260.72 5955622.23 597006.29 12.00 -839.92 88.97 MWD 12050.00 88.19 342.09 8861.88 -3424.98 -2269.02 5955645.68 596997.68 12.00 -817.39 88.87 MWD 12075.00 88.26 345.09 8862.65 -3401.02 -2276.08 5955669.55 596990.31 12.00 -795.45 88.77 MWD 12100.00 88.33 348.09 8863.40 -3376.71 -2281.87 5955693.78 596984.20 12.00 -774.17 88.68 MWD .,N ~er Hughes INTEQ Planning ~ort uvTEQ r~a Company::. BP Amoco Field: Prudhoe Bay Date: 2/5/2006 Time: 15:28:52 Co-ordinate(NE) Reference: We1L• Z-01, True North Page: 3 Site: PB Z Pad Vertical (TVD) Reference: 1 :01 6/28/1 988 00:00 91.7 Well:- Z-01 Section (V5) Reference: Well (O.OON, O.OOE,315.OOAzi) Wellpaths Plan 3, Z-01A Survey Calculation Method: Minimum Curvature Db: Orade Survey MD- Intl Azim SysTVD N/S E/W MapN MapE I)LS VS TFO Tool ft deg deg ft R ft ft ft deg/100ft ft deg 12125.00 88.41 351.09 8864.11 -3352.13 -2286.39 5955718.29 596979.36 12.00 -753.60 88.59 MWD 12150.00 88.49 354.09 8864.78 -3327.35 -2289.61 5955743.02 596975.81 12.00 -733.80 88.50 MWD 12175.00 88.57 357.09 8865.42 -3302.44 -2291.53 5955767.91 596973.56 12.00 -714.82 88.42 MWD 12200.00 88.66 0.09 8866.03 -3277.46 -2292.14 5955792.88 596972.62 12.00 -696.72 88.35 MWD 12225.00 88.75 3.09 8866.59 -3252.48 -2291.45 5955817.86 596972.98 12.00 -679.55 88.27 MWD 12250.00 88.85 6.09 8867.12 -3227.56 -2289.45 5955842.80 596974.65 12.00 -663.35 88.21 MWD 12275.00 88.95 9.09 8867.60 -3202.79 -2286.15 5955867.61 596977.63 12.00 -648.16 88.14 MWD 12292.00 89.02 11.13 8867.90 -3186.06 -2283.16 5955884.38 596980.39 12.00 -638.44 88.09 MWD 12300.00 89.02 10.17 8868.04 -3178.20 -2281.69 5955892.26 596981.76 12.00 -633.93 270.00 MWD 12325.00 89.02 7.17 8868.46 -3153.49 -2277.92 5955917.01 596985.20 12.00 -619.12 270.02 MWD 12350.00 89.02 4.17 8868.89 -3128.62 -2275.45 5955941.91 596987.34 12.00 -603.28 270.07 MWD 12375.00 89.03 1.17 8869.32 -3103.65 -2274.29 5955966.89 596988.18 12.00 -586.45 270.12 MWD 12400.00 89.04 358.17 8869.74 -3078.66 -2274.43 5955991.88 596987.70 12.00 -568.67 270.17 MWD 12425.00 89.05 355.17 8870.15 -3053.71 -2275.89 5956016.80 596985.92 12.00 -550.00 270.22 MWD 12450.00 89.07 352.17 8870.56 -3028.87 -2278.64 5956041.60 596982.83 12.00 -530.49 270.27 MWD 12475.00 89.09 349.17 8870.96 -3004.20 -2282.70 5956066.21 596978.45 12.00 -510.18 270.32 MWD 12492.00 89.10 347.13 8871.23 -2987.57 -2286.19 5956082.79 596974.74 12.00 -495.95 270.37 MWD 12500.00 88.14 347.13 8871.42 -2979.77 -2287.97 5956090.57 596972.86 12.00 -489.18 180.00 MWD 12525.00 85.14 347.13 8872.89 -2955.45 -2293.53 5956114.82 596966.98 12.00 -468.04 180.00 MWD 12550.00 82.14 347.13 8875.66 -2931.23 -2299.07 5956138.96 596961.12 12.00 -447.00 180.00 MWD 12575.00 79.14 347.13 8879.72 -2907.18 -2304.56 5956162.92 596955.31 12.00 -426.12 180.00 MWD 12600.00 76.14 347.13 8885.07 -2883.38 -2310.00 5956186.65 596949.56 12.00 -405.44 180.00 MWD 12625.00 73.14 347.13 8891.69 -2859.88 -2315.37 5956210.08 596943.88 12.00 -385.02 180.00 MWD 12650.00 70.14 347.13 8899.56 -2836.75 -2320.66 5956233.13 596938.29 12.00 -364.93 180.00 MWD 12654.00 69.66 347.13 8900.94 -2833.09 -2321.50 5956236.78 596937.40 12.00 -361.75 180.00 MWD 12675.00 69.37 349.80 8908.29 -2813.82 -2325.43 5956256.00 596933.21 12.00 -345.34 97.00 MWD 12700.00 69.09 352.99 8917.16 -2790.71 -2328.93 5956279.06 596929.41 12.00 -326.53 96.06 MWD 12725.00 68.86 356.20 8926.13 -2767.48 -2331.13 5956302.25 596926.91 12.00 -308.55 94.93 MWD 12750.00 68.69 359.41 8935.18 -2744.20 -2332.02 5956325.52 596925.71 12.00 -291.45 93.78 MWD 12775.00 68.59 2.63 8944.29 -2720.92 -2331.61 5956348.80 596925.81 12.00 -275.29 92.62 MWD 12800.00 68.54 5.85 8953.43 -2697.72 -2329.89 5956372.02 596927.23 12.00 -260.10 91.45 MWD 12825.00 68.56 9.08 8962.57 -2674.65 -2326.87 5956395.12 596929.94 12.00 -245.92 90.27 MWD 12850.00 68.64 12.30 8971.70 -2651.78 -2322.55 5956418.04 596933.96 12.00 -232.80 89.09 MWD 12875.00 68.78 15.51 8980.78 -2629.18 -2316.95 5956440.72 596939.25 12.00 -220.78 87.91 MWD 12900.00 68.98 18.72 8989.79 -2606.89 -2310.09 5956463.09 596945.82 12.00 -209.87 86.74 3.50" BP Alaska wnar~nh oaruu nnr a. z.oe~ w.e NMe e.n rw1w. oNw• •la.e...n hrwteeeybr ZO1 n•.. eor eoaoo.oo •..re x •w. ero.~. ~ ~ a vaww ao•o n.~a• 116.00' 0 OLO l1A REFERENCE FORMA ON CoV~®1(WE)R C '.Z-01 True NOM TVO) Menu'. System M Su MNeI ScYan (VS)RaMe U Da. 10.OW.O OOE) a~~aO ~~wnRM ~:0 srzv 9Be OOW a1 ]0 cem~ o~ McNOO. .~ m arewn M •• Ir eI .. M eW-6 eW •e~6 Taw 06ee T~Te ~ e~ Aa~'W66 n6.:~r 66AW •enT -ensue iie eeiA6~ nwei6 e i~~ sw ~e • A~.si N ~~ wTMx „ eMM A ~ 6 t~MfJi ~~~ NYey6 6eYr ~66L,e1 -faY.n eiN He.i ~Mregw eeeese r1e11Ja 1v Y Os61 sav w by i- 1~ tI ~1 I +~.....+r.- ~ 4 +. ~ ,. I~ 1 ~1 I k I I ! ~I ~~ T_~ I li T i ~ I I I {- ~i I ,l,ll T` ~ .1 ( 1 I rF 1 I i _ I if _: 1 I ~ I I 1_ ! r ~/ _ :... .. 11 1_j I 1 _I__ i,~--~i. ~ _~~ I ~. 111 I ~ i - I 11 I ~ ~ 1.. I x. ~ I -. 1 . I 1 •_ + I I I I I I I I h. ~ I I.. ~ F - I I ~_I I I+ I I I I I .: I I - l II I I w ~ ~ I ' I ~ ' I ~ t~ ' I'I ~II CHI- --µ I ', . ~ - ~ ~~~ I I { I II . t I .1 -- II + { I -f FF I~I I ii .I.~ I I ril ~1 ;II h --, 1- I I { 1 I h f _ Il 1 _ I I i 1 li I 1 r f i ~ 1 + - li irt~ I II 1 1 1 j I f -}. i i i I I 11 ~+a { 1 1 i 1 i.--{ i - 4 1 1 ~ Ii ~II I4 I 1- - 1 y I i I I TI t I I ~ I I I ~ I x ss -> sa .s tm sx en at et x eT >w~ zsw .xm ~ia~1. ~- n„ 1 1 .N ....~. e~ ~ i M _ ~ ~ ~.~., FuO w ~ ~ I 1 n °Xi~ r~°°so oo xu o. voen we ~xu{ ' ~~{ ,e i I aeo-1 ! F + 1 I i ~ ', 1 ams -R I } t _ + J000 1 1 I li . h~ --~ I 1 `I i f + om i i -~ { r! ~- 1 __. ~„~ i t i t i I f ..w3 I . o.rMV uumnnA r~ fi t~. ;, I .. sal .en nml ssw~n Imo. ~ 1+x +aa me .+ss an ees w•sq-NeugH [Kl litr ~; ~- +i I4 lil !;1: ;: i~i ti+ iii :I .+a-t _.;T ii II I- -i +~ III i i` I V•Rlul 8•efle• •t 515.00' I50tennl 11 I ~ i t t Nil i. - I '. 1 _ I-_ f .~~ 1 i III.. i I-I ~ 1 1 I , Yh- ` I :I i 1 1 I - - i-+- 1' I 1 i i 11 ,~II I f {{ff 1 1 it I-..F 1-1-- . 11 I 1 ' ~ I I 11 f I I f - ~ i I ~ I . I II is r` ~ 11 - - I r 1 ~ ~ i t i - i yyy _ II 1 i {{{ I 1 I. I i I 11 11 ilr I- I II I..r I i~l I . ~ I + + 1- I 11 ~ 1 ~ 1 i -+ •~ 1 II~ I.. II{ it . l ~ ~ I ~ 1- t I I „ I I . I ' _ I I I. i ,` ~I {: I m~ ~ ~ ~ ~ I ~:1 . l ~«r' I~;;: I ~: 1 . ~ : I LIJ I~ I~~ ~ -,. . II. 1 4 1. 1 ++y~ I 1 I I I + I ~ { I I } it I 'I I ~ I r II +-i_ 1t { ~ I I ~ I I h ~ 1 . . ~~ I.._ 1+i4 l I .1 1 I~I II { I I { l ~ 1 i i - { rr: l .-.~ 1 f i ~ h I t F I -1 { ~ rt F 111 + ;I ~ I ~ ~ . , ! ,-.' . '~ .. ~ i ~. ' ~ I ~ I {{ _ t 1 ttt I i , ~ ' i 1 111 i 1 I T --_~_- i { r , , _~ ~ 1 b. I 7 I I •-- ~~ ri-.i I r I ± I I i 7 .: , I . I i + n +i-r-r , T r rtr PM L` n • • are i N ~_ of bag BAG Dowell Slaps Blind/Shears TOTs pipes 2 3/8" combi ram/slips Mud Cross Mud Cross of flow cross of blind/shears variable bore wipe 3 1/2"-2 7/8" TOTs ~ of nines/cline 2 3/8" combi ram/slips .. Valve Flow Tee • • TERRIE L RUBBLE a9-sn2sz 251. BP EXPLORATION AK INC "Mastercard Check" PO BOX 196612 MB 7-5 2 ANCHORAGE, AK 99519-6612 oarE °-~~ ~ ~~~~ PAY TO THE ! ~• ORDER OF DOLLARS First ationaPBank Alaska Anchorage, AK 99501 MEMO fi ~-/ ~:L25200060~:99L4~~~62'27~~~L55611' 026E • TRANSMITTAL LETTER CHECKLIST WELL NAME _~°,~r~, ~ -~~ PTD# 2~~ - /> ~~ Development Service Exploratory Stratigraphic Test Non-Conventional Well Circle Appropriate Letter /Paragraphs to be Included in Transmittal Letter CHECK ADD-ONS TEXT FOR APPROVAL LETTER WHAT (OPTIONS) APPLIES MULTI LATERAL The permit is for a new wellbore segment of existing well , (If last two digits in permit No. API No. 50- - - API number are , between 60-69) Production should continue to be reported as a function of the original API number stated above. PILOT HOLE In accordance with 20 AAC 25.005(f), all records, data and logs acquired for the pilot hole must be clearly differentiated in both well name (P~ L?...o ~i9 PH) and API number (50-~-2 /gap -a f from records, data and logs acquired for well _PC~Ct j+.-a/ SPACING The permit is approved subject to full compliance with 20 AAC EXCEPTION 25.055. Approval to perforate and produce /inject is contingent upon issuance of a conservation order approving a spacing exception. assumes the liability of any protest to the spacing exception that may occur. DRY DITCH All dry ditch sample sets submitted to the Commission must be in SAMPLE no greater than 30' sample intervals from below the permafrost or from where samples are first caught and 10' sample intervals through target zones. Please note the following special condition of this permit: Non-Conventional production or production testing of coal bed methane is not allowed Well for (name of well) until after (Company Name) has designed and implemented a water well testing program to provide baseline data on water quality and quantity. _(Company Name) must contact the Commission to obtain advance approval of such water well testing ro ram. Rev: 1 /25/06 C:\j ody\transmittal_checkl i st WELL PERMIT CHECKLIST Field & Pool PRUDHOE BAY, PRUDHOE OIL 640150_ _ _ _ Well Name: PRUD_HOE BAY UNIT 2-01A_ __ _ -Program DEV PTD#:2060380 Company BP EXPLORATION (ALASKA) ING ___ __ __ _ _ Initial ClasslType .._DEV J 1-OIL GeoArea 890 _ __ Unit 11650 __ On1Off Shore On Administration 1 Permit fee attached .. Yes ~,2 Lease number appropriate. Yes 3 Unique well name and number Yes ',4 Well located in a_defined pool , Yes _ '5 Well located proper distance from. drilling unit. boundary Yes ',6 Well located proper distance from other wells Yes ',7 Sufficient acreage available in drilling unit Yes 8 If deviated, is wellbore plat included Yes '9 Operator only affected party Yes 10 Operator has appropriate_bond in force Yes I11 Permit can be issued without conservation order Yes '12 Permit can be issued without administrative approval Yes Appr Date 13 Can permit be approved before 15-day wait- Yes RPC 3116/2006 ' 14 Well located within area and strata authorized by Infection Order # (put 10# in comments) (For NA 1 All II 'th' 114 'I f ~ dentified (For service well onl) NA Well bore seg Annular Dispos 5 we s wi m_ mi a area o review l_ _ Y 16 Pre- roduced injector duration of pre-production less than 3 months (For service well only) NA p. _. RCMP Finding of Consistency. has been issued for this project. NA 18 __ _ Conductor string provided NA Engineering 19 Surface cos ng protects all known USDWs NA 20 CMT_vol adequate to circulate on conductor & surf csg NA 21 CMT val adequate to tie-in long string to surf csg NA 22 AMT will coverall known productive horizons Yes 23 :rasing designs adequate far C, T, R & permafrost Yes 24 Adequate tankage or reserve pit Yes CTDU. 25 If a re-drill, has a 10-403 for abandonment been approved Yes 2v ,"~degaate weilbore separation proposed Yes 27 ~ uiverter requireii, aces it meet regulations NA Sidetrack. ?fi flltr~s ~,{sid Nr _~!r schercatic ~? equip list adeq~~aTo Yes Max MvU 8.5 ppg. Ftpa_ Da'e ?Cj n r~~, tI0 U Ey r'1 °t CAgU~at~IQii Yes tgtG,A 3~20I?rr`, a~ SOpE press rarng ~.pprupr~ate; test to (put psig in comments) Yes Test to 3500 psi, MSP 2770 psi. 31 Choke manifold complies w/API RP-53 (May 84) _ Yes 32 Work will occur without operation shutdown.. Yes 33 !s presence of N2S gas probable No 20 ppm max on pad. 34 Mechanical condition of wells within AOR verified (For service well only) NA 35 permit. can be issued wlo hydrogen sulfide measures No -- f t~ * ~ 'mod t ti I r '° a nes NA geology 3~ Da:a p.esenr„ on po en .a ove presa~r zo 37 Seisrnic analysis. of shallow gas zones NA Appr Date 38 .Seabed condition survey (if off-shore) NA RPC 311612006 ''39 Contact namelphone for weekly_progress reports [exploratory only] NA Geologic ~ Engineering Commissioner: Date: Commission Date m• ~ r Date 3-~ ~~ ~-p'~`4 - 4 • 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 minding information, infom~ation of this nature is accumulated at the end of the file under APPENDIX. No special-effort has been made to chronologically organize this category of information. a **** REEL HEADER **** MWD 07/07/31 BHI 01 LIS Customer Format Tape **** TAPE HEADER **** MWD 06/10/17 1252553 01 3.0" CTK *** LIS COMMENT RECORD *** !!!!!!!!!!!!!!!!!!! Remark File Version 1.000 !!!!?!!!!!!!!!?!!!! Extract File: ldwg.las Version Information VERS. 1.20: CWLS log ASCII Standard -VERSION 1.20 WRAP. NO: One line per frame Well Info rmation Block #MNEM.UNIT Data Type Information STRT.FT 10330.0000: Starting Depth STOP.FT 11814.0000: Ending Depth STEP.FT 0.5000: Level Spacing NULL. -999.2500: Absent Value COMP. COMPANY: BP Exploration (Alaska), Inc. WELL. WELL: Z-OlAPB1 FLD FIELD: Prudhoe Bay Unit LOC LOCATION: 70 deg 17' 51.714"N 149 deg 11'47.371"W CNTY. COUNTY: North Slope STAT. STATE: Alaska SRVC. SERVICE COMPANY: Baker Hughes INTEQ TOOL. TOOL NAME & TYPE: 3.0" CTK DATE. LOG DATE: 17-OCT-06 API API NUMBER: 50029218300170 Parameter Information Block #MNEM.UNIT Value Description --- -------------- -------------- SECT. 19 Section TOWN.N 11N Township RANG. 12E Range PDAT. MSL Permanent Datum EPD .F 0 Elevation Of Perm. Datum LMF RKB Log Measured from FAPD.F 91.0 Feet Above Perm. Datum DMF KB Drilling Measured From EKB .F 0 Elevation of Kelly Bushing EDF .F 91.0 Elevation of Derrick Floor EGL .F 0 Elevation of Ground Level CASE.F N/A Casinq Depth OS1 DIRECTIONAL Other Services Line 1 Remarks ao~ -off ~ ~s3a3 (1) All depths are Measured Depths (MD) unless otherwise noted. (2) All depths are Bit Depths unless otherwise noted. (3) All Gamma ray data is realtime data. (4) Baker Hughes INTEQ utilized CoilTrak downhole tools and the Advantage surface system to log this well. (5) Tools ran in the string included Casing Collar Locator, an Electrical Disconnect and Circulating Sub, a Drilling Performance Sub (Inner and Outer Downhole Pressure, Vibration and Downhole Weight on Bit), a Directional and Gamma Sub, and a Hydraulic Orienting Sub with a Near Bit Inclination Sensor and Ultra Slim Resistivity Sub. (6) Data presented here is final and has not been depth adjusted to PDC (Primary Depth Control) log. The INTEQ MWD Gamma Ray is the PDC for this wellbore. (7) The sidetrack was drilled from Z-O1 through a milled window in 7" liner. Top of window 10348.4 ft.MD (8684.7 ft.SSTVD) Bottom of window 10355.0 ft.MD (8689.8 ft.SSTVD) (8) The interval from 11774 to 11814 ft.MD (8899.2 to 8916.2 ft.SSTVD) was not logged due to sensor bit offset at TD. (9) Tied to Z-01 at 10255 ft.MD (8611.7 ft.SSTVD) (10) The wellbore Z-01APB2 was kicked off this wellbore Z-01APB1 at 10612 ft.MD (8732.8 ft.SSTVD) MNEMONICS: GRAX -> Gamma Ray MWD-AAPI [MWD] (MWD-API units) ROPS -> Rate of Penetration, feet/hour TVD -> Subsea True Vertical Depth, feet Tape Subfile: 1 Minimum record length: Maximum record length: **** FILE HEADER **** MWD .001 1024 65 records... 14 bytes 132 bytes *** INFORMATION TABLE: CONS MNEM VALU ------------------------------------ WDFN Z-01APB1 5.xtf LCC 150 CN BP Exploration (Alaska) Inc. WN Z-01APB1 FN Prudhoe Bay Unit COUN North Slope STAT Alaska *** LIS COMMENT RECORD *** !!!!!!!!!!!!!!!!!!! Remark File ~Iersion 1.000 The data presented here is final and has not been depth shifted *** INFORMATION TABLE: CIFO MNEM CHAN DIMT CNAM ODEP ---------------------------------------------------- GR GR GRAX 0.0 ROP ROP ROPS 0.0 RAD RAD RACLX 0.0 RAS RAS RACHX 0.0 RPD RPD RPCLX 0.0 RPS RPS RPCHX 0.0 * FORMAT RECORD (TYPE# 64) Data record type is: 0 Datum Frame Size is: 28 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: 36 One depth per frame (value= 0) Datum Specification Block Sub-type is: 1 FRAME SPACE = 0.500 * F ONE DEPTH PER FRAME Tape depth ID: F 6 Curves: Name Tool Code Samples Units Size Length 1 GR MWD 68 1 AAPI 4 4 2 ROP MWD 68 1 F/HR 4 4 3 RAD MWD 68 1 OHMM 4 4 4 RAS MWD 68 1 OHMM 4 4 5 RPD MWD 68 1 OHMM 4 4 6 RPS MWD 68 1 OHMM 4 4 24 Total Data Records: 83 Tape File Start Depth = 10330.000000 Tape File End Depth = 11814.000000 Tape File Level Spacing = 0.500000 Tape File Depth Units = feet **** FILE TRAILER **** Tape Subfile: 2 96 records... Minimum record length: 54 bytes Maximum record length: 4124 bytes **** FILE HEADER **** MWD .002 1024 *** INFORMATION TABLE: CONS MNEM VALU -------------------------------- WDFN Z-01APB1.xtf LCC 150 CN BP Exploration (Alaska) WN Z-OlAPBl FN Prudhoe Bay Unit COUN North Slope STAT Alaska *** LIS COMMENT RECORD *** !!!!!!!!!!!!!!!!!!! Remark File Version 1.000 This file contains the raw-unedited field data. *** INFORMATION TABLE: CIFO MNEM CHAN DIMT CNAM ------------ ODEP ----------------- ----- GRAX ------------------ GRAX GRAX 0.0 ROPS ROPS ROPS 0.0 RACL RACL RACLX 0.0 RACH RACH RACHX 0.0 RPCL RPCL RPCLX 0.0 RPCH RPCH RPCHX 0.0 * FORMAT RECORD (TYPE# 64) Data record type is: 0 Datum Frame Size is: 28 bytes Logging direction is down (value= 255) Optical Log Depth Scale Units: Feet Frame spacing: 0.250000 Frame spacing units: [F ] Number of frames per record is: 36 One depth per frame (value= 0) Datum Specification Block Sub-type is: FRAME SPACE = 0.250 * F ONE DEPTH PER FRAME Tape depth ID: F 6 Curves: Name Tool Code Samples Units 1 GRAX MWD 68 1 AAPI 2 ROPS MWD 68 1 F/HR 3 RACL MWD 68 1 OHMM 4 RACH MWD 68 1 OHMM 5 RPCL MWD 68 1 OHMM 6 RPCH MWD 68 1 OHMM 1 Size Length 4 4 4 4 4 4 4 4 4 4 4 4 24 Total Data Records: 165 Tape File Start Depth = 10330.000000 Tape File End Depth = 11814.000000 Tape File Level Spacinq = 0.250000 • Tape File Depth Units = feet **** FILE TRAILER **** Tape Subfile: 3 178 records... Minimum record length: 54 bytes Maximum record length: 4124 bytes **** TAPE TRAILER **** MWD 06/10/17 1252553 O1 **** REEL TRAILER **** MWD 07/07/31 BHI 01 Tape Subfile: 4 2 records... Minimum record length: 132 bytes Maximum record length: 132 bytes • Tape Subfile 1 is type: LIS Tape Subfile 2 is type: LIS DEPTH GR ROP RPD RPS 10330.0000 -999.2500 -999.2500 -999.2500 -999.2500 10330.5000 277.1000 -999.2500 -999.2500 -999.2500 10400.0000 28.9000 47.3000 16.9130 14.3840 10500.0000 112.7000 46.7000 22.8120 21.3610 10600.0000 35.9000 68.2000 38.0110 35.9020 10700.0000 293.2000 81.1000 22.3970 19.8660 10800.0000 293.2000 47.1000 23.4870 22.3390 10900.0000 117.3000 39.8000 26.1220 25.4060 11000.0000 33.5000 89.3000 33.6270 33.2940 11100.0000 37.4000 69.4000 4.6210 4.5570 11200.0000 36.8000 56.6000 16.9230 18.1080 11300.0000 26.9000 69.1000 5.0540 5.0720 11400.0000 33.2000 95.6000 4.9160 4.2740 11500.0000 38.7000 76.8000 7.8920 7.6430 11600.0000 121.5000 77.8000 11.6510 11.2250 11700.0000 96.9000 42.3000 14.8100 12.4150 11800.0000 -999.2500 26.8000 -999.2500 -999.2500 11814.0000 -999.2500 -999.2500 -999.2500 -999.2500 Tape File Start Depth = 10330.000000 Tape File End Depth = 11814.000000 Tape File Level Spacing = 0.500000 Tape File Depth Units = feet RAD -999.2500 -999.2500 50.0090 67.8970 2212.9961 54.4200 53.2540 65.2900 129.5270 5.7950 17.3200 5.2880 5.9800 9.4330 15.0380 36.0420 -999.2500 -999.2500 RAS -999.2500 -999.2500 23.7800 29.5300 57.7030 38.8350 29.7030 32.7750 47.6840 5.0690 18.9010 ,5.6410 6.1810 8.8420 14.2700 21.4580 -999.2500 -999.2500 Tape Subfile 3 is type: LIS DEPTH GRAX ROPS RPCL RPCH 10330.0000 -999.2500 -999.2500 -999.2500 -999.2500 10330.2500 -999.2500 -999.2500 -999.2500 -999.2500 10400.0000 28.9000 47.3000 16.9130 14.3840 10500.0000 112.7000 46.7000 22.8120 21.3610 10600.0000 35.9000 68.2000 38.0110 35.9020 10700.0000 293.2000 .81.1000 22.3970 19.8660 10800.0000 293.2000 47.1000 23.4870 22.3390 10900.0000 117.3000 39.8000 26.1220 25.4060 11000.0000 33.5000 89.3000 33.6270 33.2940 11100.0000 37.4000 69.4000 4.6210 4.5570 11200.0000 36.8000 56.6000 16.9230 18.1080 11300.0000 26.9000 69.1000 5.0540 5.0720 11400.0000 33.2000 95.6000 4.9160 4.2740 11500.0000 38.7000 76.8000 7.8920 7.6430 11600.0000 121.5000 77.8000 11.6510 11.2250 11700.0000 96.9000 42.3000 14.8100 12.4150 11800.0000 -999.2500 26.8000 -999.2500 -999.2500 11814.0000 -999.2500 -999.2500 -999.2500 -999.2500 Tape File Start Depth = 10330.000000 Tape File End Depth = 11814.000000 Tape File Level Spacing = 0.250000 Tape File Depth Units = feet RACL -999.2500 -999.2500 50.0090 67.8970 2212.9961 54.4200 53.2540 65.2900 129.5270 5.7950 17.3200 5.2880 5.9800 9.4330 15.0380 36.0420 -999.2500 -999.2500 RACH -999.2500 -999.2500 23.7800 29.5300 57.7030 38.8350 29.7030 32.7750 47.6840 5.0690 18.4010 5.6410 6.1810 8.8420 14.2700 21.4580 -999.2500 -999.2500 Tape Subfile 4 is type: LIS **** REEL HEADER **** MWD 07/07/31 BHI 01 LIS Customer Format Tape **** TAPE HEADER **** MWD 06/10/25 1252553 01 3.0" CTK *** LIS COMMENT RECORD *** !!!!!!!!!!!!!!!!!!! Remark File Version 1.000 !!!!!!!!!!!!!!!!!!! Extract File: ldwg.las Version Information VERS. 1.20: CWLS log ASCII Standard -VERSION 1.20 WRAP. NO: One line per frame Well Info rmation Block #MNEM.UNIT Data Type Information STRT.FT 10330.0000: Starting Depth STOP.FT 12325.0000: Ending Depth STEP.FT 0.5000: Level Spacing NULL. -999.2500: Absent Value COMP. COMPANY: BP Exploration (Alaska), Inc. WELL. WELL: Z-01APB2 FLD FIELD: Prudhoe Bay Unit LOC LOCATION: 70 deg 17' 51.714"N 149 deg 11'47.371"W CNTY. COUNTY: North Slope STAT. STATE: Alaska SRVC. SERVICE COMPANY: Baker Hughes INTEQ TOOL. TOOL NAME & TYPE: 3.0" CTK DATE. LOG DATE: 25-OCT-06 API API NUMBER: 50029218300171 Parameter Information Block #MNEM.UNIT Value Description SECT. 19 Section TOWN.N 11N Township RANG. 12E Range PDAT. MSL Permanent Datum EPD .F 0 Elevation Of Perm. Datum LMF RKB Log Measured from FAPD.F 91.0 Feet Above Perm. Datum DMF KB Drilling Measured From EKB .F 0 Elevation of Kelly Bushing EDF .F 91.0 Elevation of Derrick Floor EGL .F 0 Elevation of Ground Level CASE.F N/A Casing Depth OS1 DIRECTIONAL Other Services Line 1 Remarks ~6(~-d3~f ~ ~ 53~~f (1) All depths are Measured Depths (MD) unless otherwise noted. (2) All depths are Bit Depths unless otherwise noted. (3) All Gamma ray data is realtime data. (4) Baker Hughes INTEQ utilized CoilTrak downhole tools and the Advantage surface system to log this well. (5) Tools ran in the string included Casing Collar Locator, an Electrical Disconnect and Circulating Sub, a Drilling Performance Sub (Inner and Outer Downhole Pressure, Vibration and Downhole Weight on Bit), a Directional and Gamma Sub, and a Hydraulic Orienting Sub with a Near Bit Inclination Sensor and Ultra Slim Resistivity Sub. (6) Data presented here is final and has not been depth adjusted to PDC (Primary Depth Control) log. The INTEQ MWD Gamma Ray is the PDC for this wellbore. (7) The sidetrack was drilled from Z-01 through a milled window in 7" liner. Top of window 10348.4 ft.MD (8684.7 ft.SSTVD) Bottom of window 10355.0 ft.MD (8689.8 ft.SSTVD) (8) The interval from 12298 to 12325 ft.MD (8887.68 to 8888.42 ft.SSTVD) was not logged due to sensor bit offset at TD. (9) Tied to Z-01 at 10255 ft.MD (8611.7 ft.SSTVD) (10) This wellbore Z-OlAPB2 was kicked off the wellbore Z-01APB1 at 10612 ft.MD (8732.8 ft.SSTVD) MNEMONICS: GRAX -> Gamma Ray MWD-AAPI [MWD] (MWD-API units) ROPS -> Rate of Penetration, feet/hour TVD -> Subsea True Vertical Depth, feet Tape Subfile: 1 Minimum record length: Maximum record length: **** FILE HEADER **** MWD .001 1024 65 records... 14 bytes 132 bytes *** INFORMATION TABLE: CONS MNEM VALU WDFN Z-OlAPB2_5.xtf LCC 150 CN BP Exploration (Alaska) Inc. WN Z-01APB2 FN Prudhoe Bay Unit COUN North Slope STAT Alaska *** LIS COMMENT RECORD *** !!!!!!!!!!!!!!!!!!! Remark File Version 1.000 The data presented here is final and has not been depth shifted *** INFORMATION TABLE: CIFO MNEM CHAN DIMT CNAM ODEP ---------------------------------------------------- GR GR GRAX 0.0 ROP ROP ROPS 0.0 RAD RAD RACLX 0.0 RAS RAS RACHX 0.0 RPD RPD RPCLX 0.0 RPS RPS RPCHX 0.0 * FORMAT RECORD (TYPE# 64) Data record type is: 0 Datum Frame Size is: 28 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: 36 One depth per frame (value= 0) Datum Specification Block Sub-type is: 1 FRAME SPACE = 0.500 * F ONE DEPTH PER FRAME Tape depth ID: F 6 Curves: Name Tool Code Samples Units Size Length 1 GR MWD 68 1 AAPI 4 4 2 ROP MWD 68 1 F/HR 4 4 3 RAD MWD 68 1 OHMM 4 4 4 RA5 MWD 68 1 OHMM 4 4 5 RPD MWD 68 1 OHMM 4 4 6 RPS MWD 68 1 OHMM 4 4 24 Total Data Records: 111 Tape File Start Depth = Tape File End Depth = Tape File Level Spacing = Tape File Depth Units = **** FILE TRAILER **** Tape Subfile: 2 124 Minimum record length: 54 Maximum record length: 4124 **** FILE HEADER **** MWD .002 10330.000000 12325.000000 0.500000 feet records... bytes bytes 1024 *** INFORMATION TABLE: CONS MNEM VALU -------------------------------- WDFN Z-OlAPB2.xtf LCC 150 CN BP Exploration (Alaska) WN Z-01APB2 FN Prudhoe Bay Unit COUN North Slope STAT Alaska *** LIS COMMENT RECORD *** !!!!!!!!!!!!!!!!!!! Remark File Version 1.000 This file contains the raw-unedited field data. *** INFORMATION TABLE: CIFO MNEM CHAN DIMT CNAM ---- ODEP ------------------ ----- GRAX ------------------ GRAX ------- GRAX 0.0 ROPS ROPS ROPS 0.0 RACL RACL RACLX 0.0 RACH RACH RACHX 0.0 RPCL RPCL RPCLX 0.0 RPCH RPCH RPCHX 0.0 * FORMAT RECORD (TYPE# 64) Data record type is: 0 Datum Frame Size is: 28 bytes Logging direction is down (value= 255) Optical Log Depth Scale Units: Feet Frame spacing: 0.250000 Frame spacing units: [F Number of frames per record is: 36 One depth per frame (value= 0) Datum Specification Block Sub-type is: FRAME SPACE = 0.250 * F ONE DEPTH PER FRAME Tape depth ID: F 6 Curves: Name Tool Code Samples Units 1 GRAX MWD 68 1 AAPI 2 ROPS MWD 68 1 F/HR 3 RACL MWD 68 1 OHMM 4 RACH MWD 68 1 OHMM 5 RPCL MWD 68 1 OHMM 6 RPCH MWD 68 1 OHMM Total Data Records: 222 1 Size Length 4 4 4 4 4 4 4 4 4 4 4 4 24 Tape File Start Depth = 10330.000000 Tape File End Depth = 12325.000000 Tape File Level Spacing = 0.2500.00 Tape File Depth Units = feet **** FILE TRAILER **** Tape Subfile: 3 235 records... Minimum record length: 54 bytes Maximum record length: 4124 bytes **** TAPE TRAILER **** MWD 06/10/25 1252553 O1 **** REEL TRAILER **** MWD 07/07/31 BHI 01 Tape Subfile: 4 2 records... Minimum record length: 132 bytes Maximum record length: 132 bytes ~J Tape Subfile 1 is type: LIS • Tape Subfile 2 is type: LIS DEPTH GR ROP RAD RAS RPD RPS 10330.0000 -999.2500 -999.2500 -999.2500 -999.2500 -999.2500 -999.2500 10330.5000 277.1000 -999.2500 -999.2500 -999.2500 -999.2500 -999.2500 10400.0000 28.9000 47.3000 50.0090 23.7800 16..9130 14.3840 10500.0000 112.7000 46.7000 67.8970 29.5300 22.8120 21.3610 10600.0000 35.9000 68.2000 2212.9961 57.7030 38.0110 35.9020 10700.0000 65.0000 28.7000 2007.6670 49.4550 50.3350 63.9080 10800.0000 137.1000 17.0000 107.4640 33.8290 27.3370 26.6870 10900.0000 53.6000 54.5000 38.1310 24.2490 18.3170 17.5070 11000.0000 31.6000 42.4000 113.4120 34.6030 25.4540 24.2050 11100.0000 37.9000 71.0000 4.9600 4.6030 4.1870 3.7730 11200.0000 32.6000 44.5000 6.0400 6.3610 5.7560 5.6550 11300.0000 32.6000 79.6000 9.1080 7.6810 6.9290 6.4320 11400.0000 29.6000 48.3000 14.9700 13.4490 11.7310 11.4260 11500.0000 27.4000 49.9000 9.7230 8.2020 7.3580 6.9590 11600.0000 29.9000 33.7000 25.6220 21.9830 20.5900 22.2570 11700.0000 27.4000 94.2000 9.7000 6.8910 5.7560 4.6260 11800.0000 79.6000 74.3000 10.7470 9.7150 10.3580 11.6910 11900.0000 22.5000 86.9000 18.5090 15.0590 14.7780 15.1440 12000.0000 23.5000 71.6000 3.7280 4.6860 4.6120 5.6740 12100.0000 110.2000 45.7000 3.7460 4.7720 4.5860 5.1190 12200.0000 36.6000 74.9000 -999.2500 -999.2500 • -999.2500 -999.2500 12300.0000 -.999.2500 45.6000 -999.2500 -999.2500 12325.0000 -999.2500 39.6000 -999.2500 -999.2500 Tape File Start Depth = 10330.000000 Tape File End Depth = 12325.000000 Tape File Level Spacing = 0.500000 Tape File Depth Units = feet -999.2500 -999.2500 -999.2500 -999.2500 s ~ Tape Subfile 3 is type: LIS DEPTH GRAX ROPS RACL RACH RPCL RPCH 10330.0000 -999.2500 -999.2500 -999.2500 -999.2500 -999.2500 -999.2500 10330.2500 -999.2500 -999.2500 -999.2500 -999.2500 -999.2500 -999.2500 10400.0000 28.9000 47.3000 50.0090 23.7800 16.9130 14.3840 10500.0000 112.7000 46.7000 67.8970 29.5300 22.8120 21.3610 10600.0000 35.9000 68.2000 2212.9961 57.7030 38.0110 35.9020 10700.0000 65.0000 28.7000 2007.6670 49.4550 50.3350 63.9080 10800.0000 137.1000 17.0000 107.4640 33.8290 27.3370 26.6870 10900.0000 53.6000 54.5000 38.1310 24.2490 18.3170 17.5070 11000.0000 31.6000 42.4000 113.4120 34.6030 25.4540 24.2050 11100.0000 37.9000 71.0000 4.9600 4.6030 4.1870 3.7730 11200.0000 32.6000 44.5000 6.0400 6.3610 5.7560 5.6550 11300.0000 32.6000 79.6000 9.1080 7.6810 6.9290 6.4320 11400.0000 29.6000 48.3000 14.9700 13.4490 11.7310 11.4260 11500.0000 27.4000 49.9000 9.7230 8.2020 7.3580 6.9590 11600.0000 29.9000 33.7000 25.6220 21.9830 20.5900 22.2570 11700.0000 27.4000 94.2000 9.7000 6.8910 5.7560 4.6260 11800.0000 79.6000 74.3000 10.7470 9.7150 10.3580 11.6910 11900.0000 22.5000 86.9000 18.5090 15.0590 14.7780 15.1440 12000.0000 23.5000 71.6000 3.7280 4.6860 4.6120 5.6740 12100.0000 110.2000 45.7000 3.7460 4.7720 4.5860 5.1190 12200.0000 36.6000 74.9000 -999.2500 -999.2500 • -999.2500 -999.2500 12300.0000 -999.2500 45.6000 -999.2500 -999.2500 -999.2500 12325.0000 -999.2500 39.6000 -999.2500 -999.2500 -999.2500 Tape File Start Depth = 10330.000000 Tape File End Depth = 12325.000000 Tape File Level Spacing = 0.250000 Tape File Depth Units = feet -999.2500 -999.2500 • Tape Subfile 4 is type: LIS **** REEL HEADER **** MWD 07/07/31 BHI 01 LIS Customer Format Tape **** TAPE HEADER **** MWD 06/11/03 1252553 01 3.0" CTK *** LIS COMMENT RECORD *** • !!!!!!!!???!!!!!!!? Remark File Version 1.000 ??!!!!!!!! !?!!!!!!! Extract File: ldwg.las Version Information VERS. 1.20: CWLS log ASCII Standard -VERSION 1.20 WRAP. NO: One line per frame Well Info rmation Block #MNEM.UNIT Data Type Information STRT.FT 10327.0000: Starting Depth STOP.FT 11240.0000: Ending Depth STEP.FT 0.5000: Level Spacing NULL. -999.2500: Absent Value COMP. COMPANY: BP Exploration (Alaska), Inc. WELL. WELL: Z-01APB3 FLD FIELD: Prudhoe Bay Unit LOC LOCATION: 70 deg 17' 51.714"N 149 deg 11'47.371"W CNTY. COUNTY: North Slope STAT. STATE: Alaska SRVC. SERVICE COMPANY: Baker Hughes INTEQ TOOL. TOOL NAME & TYPE: 3.0" CTK DATE. LOG DATE: 03-NOV-06 API API NUMBER: 50029218300000 Parameter Information Block #MNEM.UNIT Value Description - ----------------- SECT. ------------- 19 Section TOWN.N 11N Township RANG. 12E Range PDAT. MSL Permanent Datum EPD .F 0 Elevation Of Perm. Datum LMF RKB Log Measured from FAPD.F 91.0 Feet Above Perm. Datum DMF KB Drilling Measured From EKB .F 0 Elevation of Kelly Bushing EDF .F 91.0 Elevation of Derrick Floor EGL .F 0 Elevation of Ground Level CASE.F N/A Casing Depth OS1 DIRECTIONAL Other Services Line 1 Remarks ~oCv-o3~S ~'~S3aS"r • (1) All depths are Measured Depths (MD) unless otherwise noted. (2) All depths are Bit Depths unless otherwise noted. (3) All Gamma ray data is realtime data. (4) Baker Hughes INTEQ utilized CoilTrak downhole tools and the Advantage surface system to log this well. (5) Tools ran in the string included Casing Collar Locator, an Electrical Disconnect and Circulating Sub, a Drilling Performance Sub (Inner and Outer Downhole Pressure, Vibration and Downhole Weight on Bit), a Directional and Gamma Sub, and a Hydraulic Orienting Sub with a Near Bit Inclination Sensor and Ultra Slim Resistivity Sub. (6) Data presented here is final and has not been depth adjusted to PDC (Primary Depth Control) log. The INTEQ MWD Gamma Ray is the PDC for this wellbore. (7) The sidetrack was drilled from Z-01 through a milled window in 7" liner. Top of window 10348.4 ft.MD (8684.7 ft.SSTVD) Bottom of window 10355.0 ft.MD (8689.8 ft.SSTVD) (8) The interval from 11210 to 11240 ft.MD (8911 to 8922 ft.SSTVD) was not logged due to sensor bit offset at TD. (9) Tied to Z-01 at 10255 ft.MD (8611.7 ft.55TVD) (10) Runs 14 and 15 were used to pump a Formasqueeze pill and sidetrack off of Z-01APB1. MNEMONICS: GRAX -> Gamma Ray MWD-AAPI [MWD] (MWD-API units) ROPS -> Rate of Penetration, feet/hour TVD -> Subsea True Vertical Depth, feet Tape Subfile: 1 Minimum record length: Maximum record length: **** FILE HEADER **** MWD .001 1024 65 records... 14 bytes 132 bytes *** INFORMATION TABLE: CONS MNEM VALU ------------------------------------ WDFN Z-01APB3 5.xtf LCC 150 CN BP Exploration (Alaska) Inc. WN Z-OlAPB3 FN Prudhoe Bay Unit COUN North Slope STAT Alaska *** LIS COMMENT RECORD *** !!!!!!!!!!!!!!!!!!! Remark File Version 1.000 The data presented here is final and has not been depth shifted • *** INFORMATION TABLE: CIFO MNEM CHAN DIMT CNAM ODEP ---------------------------------------------------- GR GR GRAX 0.0 ROP ROP ROPS 0.0 RAD RAD RACLX 0.0 RAS RAS RACHX 0.0 RPD RPD RPCLX 0.0 RPS RPS RPCHX 0.0 * FORMAT RECORD (TYPE# 64) Data record type is: 0 Datum Frame Size is: 28 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: 36 One depth per frame (value= 0) Datum Specification Block Sub-type is: 1 FRAME SPACE = 0.500 * F ONE DEPTH PER FRAME Tape depth ID: F 6 Curves: Name Tool Code Samples Units Size Length 1 GR MWD 68 1 AAPI 4 4 2 ROP MWD 68 1 F/HR 4 4 3 RAD MWD 68 1 OHMM 4 4 4 RAS MWD 68 1 OHMM 4 4 5 RPD MWD 68 1 OHMM 4 4 6 RPS MWD 68 1 OHMM 4 4 24 Total Data Records: 51 Tape File Start Depth = 10327.000000 Tape File End Depth = 11240.000000 Tape File Level Spacing = 0.500000 Tape File Depth Units = feet **** FILE TRAILER **** Tape Subfile: 2 64 records... Minimum record length: 54 bytes Maximum record length: 4124 bytes **** FILE HEADER **** MWD .002 1024 *** INFORMATION TABLE: CONS MNEM VALU -------------------------------- WDFN Z-01APB3.xtf LCC 150 CN BP Exploration (Alaska) WN Z-01APB3 FN Prudhoe Bay Unit COUN North Slope STAT Alaska *** LIS COMMENT RECORD *** !!!!!!!!!!!!!!!!!!! Remark File Version 1.000 This file contains the raw-unedited field data. *** INFORMATION TABLE: CIFO MNEM ----- CHAN DIMT ----- - CNAM - -- ODEP --------------- GRAX -- ---------- GRAX ---- - ---- GRAX -- 0.0 ROPS ROPS ROPS 0.0 RACL RACL RACLX 0.0 RACH RACH RACHX 0.0 RPCL RPCL RPCLX 0.0 RPCH RPCH RPCHX 0.0 * FORMAT RECORD (TYPE# 64) Data record type is: 0 Datum Frame Size is: 28 bytes Logging direction is down (value= 255) Optical Log Depth Scale Units: Feet Frame spacing: 0.250000 Frame spacing units: [F Number of frames per record is: 36 One depth per frame (value= 0) Datum Specification Block Sub-type is: FRAME SPACE = 0.250 * F ONE DEPTH PER FRAME Tape depth ID: F 6 Curves: Name Tool Code Samples Units 1 GRAX MWD 68 1 AAPI 2 ROPS MWD 68 1 F/HR 3 RACL MWD 68 1 OHMM 4 RACH MWD 68 1 OHMM 5 RPCL MWD 68 1 OHMM 6 RPCH MWD 68 1 OHMM 1 Size Length 4 4 4 4 4 4 4 4 4 4 4 4 24 Total Data Records: 102 • Tape File Start Depth = 10327.000000 Tape File End Depth = 11239.750000 Tape File Level Spacing = 0.250000 • Tape File Depth Units = feet **** FILE TRAILER **** Tape Subfile: 3 115 records... Minimum record length: 54 bytes Maximum record length: 4124 bytes **** TAPE TRAILER **** MWD 06/11/03 1252553 01 **** REEL TRAILER **** MWD 07/07/31 BHI O1 Tape Subfile: 4 2 records... Minimum record length: 132 bytes Maximum record length: 132 bytes • Tape Subfile 1 is type: LIS Tape Subfile 2 is type: LIS DEPTH GR ROP RPD RPS 10327.0000 -999.2500 -999.2500 -999.2500 -999.2500 10327.5000 93.4000 -999.2500 -999.2500 -999.2500 10400.0000 51.1000 44.7000 9.9110 7.4820 10500.0000 38.3000 27.6000 26.0530 24.7900 10600.0000 85.7000 33.8000 18.4130 19.3310 10700.0000 35.3000 50.6000 26.5070 25.0910 10800.0000 56.3000 46.2000 22.7850 30.6930 10900.0000 61.6000 14.8000 14.9990 14.0980 11000.0000 54.2000 45.2000 10.9930 10.7780 11100.0000 42.5000 22.9000 8.3720 7.5530 11200.0000 22.4000 13.6000 6.7930 5.2360 11240.0000 -999.2500 -999.2500 -999.2500 -999.2500 Tape File Start Depth = 10327.000000 Tape File End Depth = 11240.000000 Tape File Level Spacinq = 0.500000 Tape File Depth Units = feet RAD -999.2500 -999.2500 21.2920 49.7180 26.7700 55.5970 17.4100 19.9170 14.8550 11.3410 10.9500 -999.2500 RAS -999.2500 -999.2500 12.8770 32.2120 23.0740 32.9970 25.1330 17.4290 11.1590 9.3800 9.4370 -999.2500 Tape Subfile 3 is type: LIS DEPTH GRAX ROPS RPCL RPCH 10327.0000 -999.2500 -999.2500 -999.2500 -999.2500 10327.2500 -999.2500 -999.2500 -999.2500 -999.2500 10400.0000 51.1000 44.7000 9.9110 7.4820 10500.0000 38.3000 27.6000 26.0530 24.7900 10600.0000 85.7000 33.8000 18.4130 19.3310 10700.0000 35.3000 50.6000 26.5070 25.0910 10800.0000 56.3000 46.2000 22.7850 30.6930 10900.0000 61.6000 14.8000 14.9990 14.0980 11000.0000 54.2000 45.2000 10.9930 10.7780 11100.0000 42.5000 22.9000 8.3720 7.5530 11200.0000 22.4000 13.6000 6.7930 5.2360 11239.7500 -999.2500 1058.0999 -999.2500 -999.2500 Tape File Start Depth = 10327.000000 Tape File End Depth = 11239.750000 Tape File Level Spacing = 0.250000 Tape File Depth Units = feet • RACL -999.2500 -999.2500 21.2920 49.7180 26.7700 55.5970 17.4100 19.9170 14.8550 11.3410 10.9500 -999.2500 RACH -999.2500 -999.2500 12.8770 32.2120 23.0740 32.9970 25.1330 17.4290 11.1590 9.3800 9.4370 -999.2500 Tape Subfile 4 is type: LIS