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Home My WebLink About195-011 ¡~ Pages NOT Scanned in this Well History File . . XHVZE This page identifies those items that were not scanned during the initial scanning project. They are available in the original file and viewable by direct inspection. /1 ç - 0 II File Number of Well History File PAGES TO DELETE Complete RESCAN o Color items - Pages: o Grayscale, halftones, pictures, graphs, charts - Pages: o Poor Quality Original - Pages: o Other - Pages: DIGITAL DATA o Diskettes, No. o Other, NolType OVERSIZED o Logs of various kinds o Other COMMENTS: ianna Vincent Nathan Lowell Date: 0 ).()J 151 ~ o TO RE-SCAN Notes: Re-Scanned by: Beverly Dianna Vincent Nathan Lowell Date: Isl (r~ --([) If 01/24/05 Schlumberger NO. 3318 Alaska Data & Consulting Services 2525 Gambell Street, Suite 400 Anchorage, AK 99503-2838 A TTN: Beth SCANNED JUN 1 7 2005 Company: State of Alaska Alaska Oil & Gas Cons Comm Attn: Helen Warman 333 West 7th Ave, Suite 100 Anchorage, AK 99501 Field: Prudhoe Bay Color '~ /f~' ~ t ¡-':pJ.. IJ ¡Q5'ó2. 9JJ:f;fl{ -"e-01 >,Cfq-Of; 1Pf-Ð ,9,,0 ;). 0 t.{ - J.Ð Î.vt/., i~ Zc" - ¿;¡:; .~-fH ;7)j.ifV [15'- (~J 2 c:tI . 2.1 Well Job # Log Description Date Blueline Prints CD 'le C-29A 10715422 MCNL 08/20/04 1 i E-25 10715423 MCNL 08/21/04 1 q G-02A 10715424 MCNL 08/23/04 1 ~. W-27 A 10670031 MCNL 08/24/04 1 ~.. D-25A (--...... 10854314 MCNL 08/27/04 1 -, ~L? DS 15-25A " 10715428 MCNL 09/11/04 1 'It: E-39A 10715430 MCNL 09/13/04 1 02-16B 10928597 MCNL 10/02/04 1 II C-25A 10928598 MCNL 10/03/04 1 1 E-17A J 10928602 MCNL 10/30/04 1 ~ C-41A I 10928606 MCNL 11/24/04 1 ,- DS 07-30A / 10715445 MCNL 12/09/04 1 't DS 15-38A ¡¿ 10715446 MCNL 12/11/04 1 .{ 02-28A 10928607 MCNL 12/11/04 1 ~ D-11A 10928608 MCNL 12/16/04 1 g DS 05-24A 10928609 MCNL 12/22/04 1 I(Prints_ only-Job not complete) J - PLEASE ACKNOWLEDGE RECEIPT BY SIGNING AND RETURNING ONE COPY EACH TO: BP Exploration (Alaska) Inc. Petrotechnical Data Center LR2-1 900 E. Benson Blvd. Anchorage, Alaska 99508 Date Delivered: d2ilo:;- /' Alaska Data & Consulting Services 2525 Gambell Street. s~oo Anchorage. AK 9950 / 38 ATTNCe / " / Rece~d by: I , / í' 1~} . / ./ (,' . I~/· '~ :/7 v' 1/ L/ 11/16/04 Schlumberger NO. 3256 ¡' fAb'" e ~ I rf\... , vr V--~ '7 1\ Alaska Data & Consulting Services 2525 Gambell Street, Suite 400 Anchorage, AK 99503-2838 ATTN: Beth Company: State of Alaska Alaska Oil & Gas Cons Comm Attn: Helen Warman 333 West 7th Ave, Suite 100 Anchorage, AK 99501 Field: Prudhoe Bay e 0 og escnp110n ae ue me rmts D ~O~ E-39A 10715430 MEMORY IPROF & WARM BACK 09/13/04 1 ~.o}~ D.S. 15-25A 10715428 MEMORY PPROF & IPROF 09/11/04 1 . .1 10928596 MEMORY LDL 09/27/04 1 'tÝ~ V C-25A \ '\ C-25A 10928598 MEMORY LDLfIPROF 10/04/08 1 'J -' ,..A. L2-14B 10670029 PRODUCTION PROFILE 08/20/04 1 .;~"V 10928600 MCNL 10/20/04 1 1 J&f-ML F-11B ~ ,Æf...:: L2-07 A 10861911 MCNL 05/31/04 1 1 ~\ i=-07A 10715409 MCNL 06/07/04 1 1 ,~ ~;~~~ 10670015 MCNL 05/22/04 1 1 10724368 RST -SIGMA 04/02/04 1 1 L3-05 10662981 RST -SIGMA 01/08/04 1 1 ~' L3-05 10866588 RST-SIGMA 09/03/04 1 1 '\ L3-05 10672320 RST -SIGMA 09/28/03 1 1 ¡?£., ¡sq L3-02 10560313 RST-SIGMA 10/16/03 1 1 90;< OWDW-NW 10563037 RST-SIGMA & BORAX 03/29/03 1 1 ~1-'tO OWDW-NW 10672361 RST -BORAX 03/28/04 1 1 r-" WI! J b # L D "f D t BI r Color P" C ---/ PLEASE ACKNOWLEDGE RECEIPT BY SIGNING AND RETURNING ONE COPY EACH TO: BP Exploration (Alaska) Inc. Petrotechnical Data Center LR2-1 900 E. Benson Blvd. SCANNED P,PR ~~ 8 2005 Anchorage, Alaska 99508 Alaska Data & Consulting Services 2525 Gambell Street, Suite 400 Anchorage, 99503-2838 ATTN: Bet Date Delivered: /(-2c(- 0'1 ,.-../' . --) STATE OF ALASKA -) ALASKA ulL AND GAS CONSERVATION COMMISSION WELL COMPLETION OR RECOMPLETION REPORT AND LOG 8 2004 1a. Well Status: D Oil DGas D Plugged !BI Abandoned D Suspended DWAG 1b. Well Class:' " ,., 20AAC 25.105 20AAC 25.110 !BI Development D Exploratory DGINJ DWINJ D WDSPL No. of Completions Zero Other D Stratigraphic D Service 2. Operator Name: 5. Date Comp., Susp., or Aband. 12. Permit to Drill Number BP Exploration (Alaska) Inc. 10/6/2004 195-011 304-232 3. Address: 6. Date Spudded 13. API Number P.O. Box 196612, Anchorage, Alaska 99519-6612 03/14/1995 50- 029-20819-01-00 4a. Location otWell (Governmental Section): 7. Date T.D. Reached 14. Well Name and Number: Surface: 03/25/1995 PBU C-25A 1535' SNL, 1031' WEL, SEC. 19, T11N, R14E, UM 8. KB Elevation (ft): 15. Field 1 Pool(s): Top of Productive Horizon: 4101' SNL, 735' EWL, SEC. 20, T11N, R14E, UM 72.9' Prudhoe Bay Field I Prudhoe Bay Total Depth: 9. Plug Back Depth (MD+TVD) Pool 107' SNL, 447' WEL, SEC. 30, T11N, R14E, UM 11554 + 9040 Ft 4b. Location otWell (State Base Plane Coordinates): 10. Total Depth (MD+TVD) 16. Property Designation: Surface: x- 664353 y- 5959683 Zone- ASP4 11600 + 9039 Ft ADL 028310 TPI: x- 666185 y- 5957157 Zone- ASP4 11. Depth where SSSV set 17. Land Use Permit: Total Depth: x- 665036 y- 5955846 Zone- ASP4 N/A MD 18. Directional Survey 19. Water depth, if offshore 20. Thickness of Permafrost DYes !BINo N/A MSL 1900' (Approx.) 21. Logs Run: GR I RES I NEU I MWD 22. CASING, LINER AND CEMENTING RECORD CASING .. .' . SETTING. QEP,TH MP ·~WING.:DEPTHTVt;): H(1jLE . ..' AMqµNT .. . ].' ,................ ....... ...···CEMSNflt\jG··RFtORq ...··.SI:lE ............. WT.PER,Ft; GRAD~, '.. TOp.··· .BOTTOM ····.·.···ToP .' BOTTbM ...··.SIZE . .... .,. PU(;.I.;ED 20" x 30" Insulated Conductor Surface 110' Surface 110' 36" 8 cu yds Concrete 13-3/8" 72# L-80 Surface 2676' Surface 2676' 17-1/2" 3720 cu ft Arcticset II 9-5/8" 47# L-80 Surface 8729' Surface 7770' 12-1/4" 1300 cu ft Class 'G', 130 cu ft PF 'C' 7" 29# L-80 8582' 10382' 7661' 9022' 8-1/2" 390 sx Class 'G' 4-1/2" 12.6# L-80 10168' 11600' 8946' 9039' 6" ~62 sx Class 'G' 23. Perforations open to Production (MD + TVD of Top and 24~..···'" . Tuåll"GREcþRD .. . ." . .' . .. . '. ". .. .... . Bottom Interval, Size and Number; if none, state "none"): SIZE DEPTH SET (MD) PACKER SET (MD) None 4-1/2", 12.6#, 13Cr80 & L-80 9985' 9937' & 9851' MD TVD MD TVD .25. ................. ACID, . FRACTURE, . CEMENT SQUEEZE, Erc; .. . ¡......i.......·¡·..........·.....·.. DEPTH INTERVAL (MD) AMOUNT & KIND OF MATERIAL USED 10554' Set Whipstock on top of Anchor Packer 10554' Attempt P&A wI 40 Bbls Cement 10554' P&A with 43 Bbls Cement (2nd Plug) 26. PRODUCTION TEST Date First Production: Method of Operation (Flowing, Gas Lift, etc.): Not on Production N/A Date of Test Hours Tested PRODUCTION FOR all -BSl GAs-McF W A TER-Bsl CHOKE SIZE I GAs-all RATIO TEST PERIOD -+ Flow Tubing Casing Pressure CALCULATED -+ Oll-Bsl GAs-McF W A TER-BSl all GRAVITY-API (CORR) Press. 24-HoUR RATE 27. CORE DATA Brief description of lithology, porosity, fractures, apparent dips and presence of oil, gas or water (attach separate sheet, if necessary). Submit core chips; if none, state "none". None SCANNED NOV 1 6 2004 ORIGINAL RBDMS BFL NOV - 9 2004 ,):: Form 10-407 Revised 12/2003 CONTINUED ON REVERSE SIDE 2ð. GEOLOGIC MARKERS 29. FORMATION TESTS NAME MD TVD Include and briefly summarize test results. List intervals tested, and attach detailed supporting data as necessary. If no tests were conducted, state "None". Sag River 9487' 8403' None Shublik 9527' 8438' Sadlerochit 9615' 8514' 30. List of Attachments: Summary of Pre-Rig Work and Daily Drilling Reports 31. I hereby certify that the foregoing is true and correct to the best of my knowledge. Signed Terrie Hubble Title 195-011 304-232 Permit No. / A roval No. Technical Assistant Date ll-o PBU C-25A Well Number Prepared By Name/Number: Drilling Engineer: Terrie Hubble, 564-4628 Mary Endacott, 564-4388 INSTRUCTIONS GENERAL: This form is designed for submitting a complete and correct well completion report and log on all types of lands and leases in Alaska. ITEM 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 elevation in feet above mean low low water. 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: True vertical thickness. ITEM 22: Attached supplemental records for this well should show the details of any multiple stage cementing and the location of the cementing tool. ITEM 23: If this well is completed for separate production from more than one interval (multiple completion), so state in item 1, and in item 23 show the producing intervals for only the interval reported in item 26. (Submit a separate form for each additional interval to be separately produced, showing the data pertinent to such interval). ITEM 26: Method of Operation: Flowing, Gas Lift, Rod Pump, Hydraulic Pump, Submersible, Water Injection, Gas Injection, Shut-In, or Other (explain). ITEM 27: If no cores taken, indicate "None". SCANNED NO\! 1 6 2004 ITEM 29: List all test information. If none, state "None", Form 10-407 Revised 12/2003 Submit Original Only ) ~) Well: Field: API: Permit: C-25B Prudhoe Bay Field 50-029-20819-02-00 204-109 Accept: Spud: Release: Rig: 1 0/05/04 1 0/07/04 1 0/12/04 Nordic #1 PRE-RIG WORK 07/17/04 MIRI. MU AND RIH WITH VENTURI. TAG FILL AT 9912 (UP) CTMD. WORK TO 9916 (UP). POH. RECOVER FULL BARREL AND 2 SS BANDS. RIH WITH VENTURI #2. TAG AT 9923' (DN) CTMD. WORK TO 9924' (DN) POH. RECOVER -1GAL SLUGGITS, NO METAL. RIH WITH 3"JSN. WASH TO 9926' (DN). PUMP 5 BBL FLOPRO SWEEP. POH. CUT 150' PIPE. MUIRIH WITH VENTURI. WORK TO 9927 (UP). POH. RECOVER A HANDFUL OF SLUGGITTS. MU AND RIH WITH FISHING STRING. 07/18/04 RIH AND PULL IBP FROM 9931 CTMD. RECOVERED IBP WITH RUBBERS. MU I RIH WITH 2.3" JSN. TAG TOS AT 10149'. CLEAN TO 10670' WITH 5 BBLS PILLS AND XSLK/ KCL, RETURNS AT 1:1 UNTIL 10670' (40') ABOVE PERFS, LOST RETURNS. POH. RETURNS BACK TO 1:1, AS LOAD GETS LlGHTER.MIRU N2 PUMPER. RIH WITH N2. BEGIN N2 LIFT. WELL IS STARTING TO SLUG. SD AND EVACUATE LOCATION DUE TO PROBLEM IN SKID. 07/27/04 MIRU. MUIRIH WI 2.25" JSN. WELL FLOWING THROUGH ASRC @ 560 PSI WHP, 16 MMSCFID, 3200 BPD. TAG SAND TOP @ 11534'. BEGIN FCO FROM PREVIOUS SAND TAG OF 11670' WI 5 BBL FLOPRO SWEEPS, 165' BITES, CHASED INTO TT. CLEAN-OUT DOWN TO 11276'. 07/28/04 CONTINUE FCO WI 165' BITESI FLOPRO SWEEPS TO 11538' (CTM UP). PUMP FINAL 10 BBL FLOPRO SWEEP OFF BTM. CHASE OUT @ 80% TO SURFACE, MAKING REPEAT PASSES ACROSS JEWELRY. RDMO. LEAVE WELL FLOWING THROUGH ASRC. 09/21/04 MUIRIH WITH WEATHERFORD 2 718" MOTOR/3.8" DSM. KILL WELL WI 2% KCL & FREEZE PROTECT TO 2000' WI 50/50 METH. TAG XN AT 9961' CTM, CORRECT TO 9973' MD. MILL THRU NIPPLE AND DRIFT DOWN BELOW WHIPSTOCK SETTING DEPTH TO 10700'. RUN PDS GRICCL & WFD DUMMY WHIPSTOCK (3.688"). LOG 10650'-9800', FLAG AT 10450'. RE-KILL WELL WI KCL. MU/RIH WI WEATHERFORD WS-R-BB ANCHOR PACKER AND SPERRY ESS. 09/22/04 RIH WI WEATHERFORD WS-R-BB ANCHOR PACKERISPERRY ESS. TIE-IN TO FLAG. SET ANCHOR PACKER @ 10561' (BTM OF PKR). POOH. SPERRY DATA SHOWS LUG TO BE 24 DEG LEFT OF TF. SET UP WHIPSTOCK FOR 45 DEG RIGHT OF TF, CUT PIPE (CHROME TBG), PERFORM WEEKLY BOP TEST. LOAD AND KILL WELL AND FP TUBING. RIH WI WFD HOLLOW WHIPSTOCK. SET WS TOP @ 10545' MD. ATTEMPT TO PT TUBING. COULD NOT GET TUBING TO TEST, ABLE TO INJECT INTO WELL. POOH. TOOLS LOOKED GOOD. WHIPSTOCK IS SET. WELL IS FP WITH 60/40 METHANOL. RD OS CTU #5. NOTIFIED PAD OPERATOR, WELL TO REMAIN SHUT IN. JOB COMPLETE. 09/26/04 MIRU. WELL SHUT-IN UPON ARRIVAL. RIH WI WFD 3.75" BLIND BOX. SIT DOWN @ 9883' (X-NIPPLE OR TBG STUB). MADE SEVERAL ATTEMPTS TO GET DEEPER WITH NO SUCCESS. POOH. BLIND BOX HAD NO MARKS ON IT. WILL GET BLIND BOX TURNED DOWN TO 3.65". DECIDE TO RUN LEAK DETECT LOG. RIH WITH SWS MEMORY STPIGR CCL. PARK SPINNER ABOVE WS AT 10530' CTMD. BEGIN INJECTING KCL INTO WELL AT 2.5 BPM. SCANNEJ=, NOV 1. tt 2004 C-25B Pre-Rig Sidetrack Work --) Page 2 ) 09/27/04 INJECTING INTO WELL AT 2.5 BPM. LOG LDL UP FROM 10530' TO 9800' CTMD AT 40 FPM. RBIH. MAKE STOP COUNTS AT 10500',10100',9925' AND 9800' CTMD~ POOH WITH LOGGING TOOLS. LOG INDICATES INJECTION ABOVE THE WS AT 10475' CTMD (10487' ELMD). WS/PACKER APPEAR TO BE HOLDING. FP WELL WITH 60/40 METH TO 2000'. RD DS CTU #5. JOB COMPLETE. 10/01/04 MIRU. RU WFRD TENSION PACKER. KILL WELL WITH 300 BLS FILTERED 1%KCL. TEST SET PACKER AT 300'. GOOD PRESSURE TEST. RIH TO 5150' CTM AND PERFORM WT CK W/O PROBLEM. RIH TO 9172' CTM AND SAT DOWN ON GLM. COULD NOT WORK THROUGH GLM W/PKR WHILE PUMPING AND NOT PUMPING. ATTEMPTED TO PUH AND CHANGE COIL ANGLE W/O SUCCESS. POOH. 10/02104 MU WFRD 3-3/8" IRPP AND RIH. SAT DOWN AT TOL AT 10163' CTM. MAKE REPEATED ATTEMPTS TO GET INTO TOL W/O SUCCESS. TRIED TO ROCK PUMP AND COIL BUT COULD NOT ENTER TOL AT 10157' CTM. POOH. KILL WELL WITH FILTERED 1% KCL WHILE RIH WI CCL-GR - MCNL - srr/P. MADE STOP COUNTS @ 9800',9925',10100',10200',10350',10500',10520'. MAKE 60 FT/MIN UP/DN PASSES FROM 10520' - 9800'. MAKE 80 FT/MIN UP/DN PASSES FROM 10520' TO 9800'. MADE DIAGNOSTIC STOP COUNTS AT 10,520' AT 5,4,3,2, AND 1 BPM. MADE TWO BASELINE MCNL PASSES W/1% KCL AT 2 BPM FROM 10520' TO 10000'. MADE FIRST MCNL PASS AT 60 FT/MIN AFTER PUMPING 60 BBLS BORAX BEHIND PIPE AND SECOND 60 FT/MIN PASS W/100 BBLS BORAX BEHIND PIPE. BOTH BORAX PASSES AT 2.0 BPM. 1 0/03/04 FINISH BORAX LOGGING AND MAKE FINAL STOP COUNTS AT 4 BPM. MAKE UP PASS AT 60 FT/MIN WHILE PUMPING AT 4 BPM AND POOH. FIELD ANALYSIS OF LOGGING DATA INDICATES WS IS NOT LEAKING. CUT PIPE (CHROME TBG). INSTALL WELD ON CONNECTOR. RIH WITH 2.25" BALL DROP NOZZLE, TAG WHIPSTOCK AT 10, 538' CTM AND CORRECT TO 10,545'. FLAG COIL AND PUH TO 10,400', PARK COIL AND STANDBY FOR SLB LAB WORK DUE TO SLURRY THICKENING TIME PROBLEMS. 1 0/04/04 KILL WELL W/1% KCL DOWN THE BACKSIDE. FOLLOW WELL KILL WITH 80 BBLS OF DIESEL DOWN THE BACKSIDE. LAY IN 10 BBLS CLASS G 15.8 PPG CEMENT AND 30 BBLS 15.8 W/15 PPB AGGREGATE. ONLY ABLE TO ACHIEVE A SQUEEZE PRESSURE OF 200 PSI AFTER SEVERAL HESITATIONS AND THEN ALL CEMENT AWAY AND WELL WENT ON A VAC. CLEANED OUT TO 10400',34' ABOVE KNOWN HOLES WITH SEVERAL SWEEPS USING 1.5 # BIOZAN AND THEN CHASE OUT WASHING ALL JEWERL Y. COULD NOT DO 80% DUE TO CHROME TUBING RUNNING SPEED LIMITATIONS. FREEZE PROTECTED TUBING TO 2200' WITH 60/40 METHANOL. NOTIFED NORDIC 1 AND PAD OPERATOR OF WELL STATUS. JOB COMPLETE. SCANNED NOV 1 6 2004 -) -} BP EXPLORATION Page 1 .. Operations Summary"Report ...<.... .... ........... .... .... ... .... .' Legal Well Name: C-25 Common Well Name: C-25 Spud Date: 9/24/1982 Event Name: REENTER+COMPLETE Start: 1 0/1/2004 End: Contractor Name: NORDIC CALISTA Rig Release: 10/12/2004 Rig Name: NORDIC 1 Rig Number: N1 Date From - To Hours Task Code NPT Phase Description of Operations -- - - -.-- _._-- 10/3/2004 13:30 - 14:30 1.00 MOB P PRE Released rig from 02-16b at 13:30 hrs 10-3-2004. Functuion tested drive system and new planetary. Load out trucks and make ready to pull rig off well. 14:30 - 15:30 1.00 MOB P PRE Jack up rig and inspect drive system. 15:30 - 16:30 1.00 MOB P PRE PJSM. Move rig off well. Conducted post-operations pad inspection. Moved rig to pad entrance. Repaired hydraulic leak on drive system. 16:30 - 17:00 0.50 MOB P PRE Held PJSM with BP Security, tool service and all rig personnel. 17:00 - 00:00 7.00 MOB P PRE Rig move from DS 2-16 to C-25. 10/4/2004 00:00 - 04:00 4.00 MOB P PRE Rig move from 2-16 b to C25. Traveled 17 miles in 11 hours. Arrived on C-25 location at 0400 hrs 10-4-2004. Rig on Standby at 0400 hrs because CTU # 9 on well getting ready to cement squeeze damage casing above whipstock set at 10,545 ft. Note: Following the CTU prep work, the wellhouse will have to be pulled, flowline disconnected, pad inspected and then level pad before moving over well. 04:00 - 18:00 14.00 MOB N WAIT PRE Wait on Wells Group to finish C-25 well prep Service Injector head & conduct general rig maintenance. Held weekly HSE meeting for Nordic crew. 18:00 - 19:30 1.50 MOB N WAIT PRE Nordic/SLB conducting general mainenances CTU #9 rigging down. Contacted electrical and DSM to pull wellhouse. 19:30 - 00:00 4.50 MOB N WAIT PRE Prep work on C-25 wellhouse and location Fluids hauled, tanks removed, RD manifold, and removed electrical from wellhouse 10/5/2004 00:00 - 01 :30 1.50 MOB N WAIT PRE RU crane and demob well house 01 :30 - 07:30 6.00 MOB N WAIT PRE Conducted Pad Inspection wI Pad Operator RD flowline and haul in gravel for Pad 07:30 - 17:30 10.00 MOB N WAIT PRE Tool Services level pad surface around C-25 well. Install platform onto well. PJSM. Review procedure, hazards & mitigation for backing rig over well. Jack up rig & inspect drive system. 17:30 - 18:00 0.50 MOB P PRE Rig off standby at 1730 hrs (37.5 hrs) Move rig over well "Location Slick" 18:00 - 18:30 0.50 MOB P PRE PJSM 18:30 - 21:30 3.00 BOPSUF P PRE NU BOPE 21 :30 - 00:00 2.50 BOPSUF P PRE Test BOP. 10/6/2004 00:00 - 00:30 0.50 BOPSUF P PRE Continue testing BOP. 00:30 - 02:00 1.50 KILL P WEXIT Install coil connector and test same. Pump dart. Coil volume 56.4 bbl. 02:00 - 03:00 1.00 KILL P WEXIT Test inner reel valve. MU Nozzle. 03:00 - 03:30 0.50 KILL C WEXIT Fill well with 18bbls Injectivity test 900 psi at 1.9 bpm. 1375 at 2.5 bpm. 03:30 - 05: 15 1.75 ZONISO C WEXIT RIH .3 bpm loss rate. RIH tagged WS at 10557' PU 10ft flagged pipe. Retagged at 10,555 ft 05:15 - 07:30 2.25 ZONISO C WEXIT Cir and clean wellbore out Qp = 2.0211.55 bpm. Getting fluid on location and RU cementers. 45 bbl cement pumpable at 3.5 hrs thicking time. 07:30 - 08:00 0.50 ZONISO C WEXIT Held PJSM with cementers and crews 08:00 - 08:25 0.42 ZONISO C WEXIT Conduct injective test down CT @ 2.00 bpm at a WHP of 547 psi. Cir at 0.731 0.52 bpm. Printed: 1011812004 9:58:52 AM SCANNEn NO\¡ 1 ~~ '200[1, · " ) BP EXPLORATION Operations Summary Report Start: 10/1/2004 Rig Release: 10/12/2004 Rig Number: N1 Phase Description of Operations WEXIT Start w/5 bbl water, SO PT to 4000 psi, batching up cement. Pumped 5 bbl Lead 15.8ppg cement at 2.211.67 bpm Pumped 30 bbl 15.8ppg cement wI 15ppb aggerate at Q=2.2I1.9 bpm Pumped 7.5 bbl15.8ppg Tail at Q= 2.2/1.9bpm Pumped 5 bbl water and switched to 1.5ppb Bio water With 2 bbl cement out, PUH laying in cement at 1:1 ratio. well taking some fluid Caught fluid at 9198 ft with 5 bbl displace left while POOH is 1 :1 TOC at 8980 ft, Pull to Safety at 8000 ft WEXIT Close choke and pressure up to 500 psi with 1 bbl. SD no pressure losses, Pumped 0.1 bbl and pressure increased 500 psi to 992 psi. SD no pressure losses in 10 minutes. Open choke and set Qp to .63 bbl/min. RIH to TOC at 8980 ft WEXIT RIH to TOC at 8980 ft Pressure inc at 9073 ft WEXIT Containmented out cement at 65fpm and Qp = 2 to 2.65 bpm 480 ft PU pump 3 bbl spacer Contaminating cement at 65fpm through WHP of 350 to 550 psi At 440 ft cleaned out, PU, pumped 3 bbl spacer. WEXIT Cleaned out to 10,300 ft PUH to 8,900 ft and chase contaminated cement to surface with 2% KCL. Switch to 1.5ppb Bio Qp= 2.71/2.41 bpm at 400 psi WHP Cir at 1:1 ratio Density = 8.4/8.7ppg POOH leaving 1.5ppb Bio water from 10,300 ft to 8,000 ft for next clean out. Q=2.69/2.28bpm at 450 psi WHP. OOH, trapped 500 psi, closed tree to hold 500 psi WHP PU jetting nozzle and RU to flush out BOP's Jetting BOP's and surface lines PJSM on PU Window Exit BHA PU MU WFT Window milling BHA Pull test CTC to 40k after set screws to big ones Cement at 1540 hrs = 0 psi compressives after 4 hr test RIH with Milling BHA. Wt check at 10000 ft 41 k In 5.5 hrs in lab cement at 600 psi compressive strength at 1730 hrs Inc Qp to 2.7 BPM CTP = 1800psi Tagged at 10,303 ft Drilling cement 10,303 ft to 10,350 ft Qp = 2.7/2.82bpm CTP = 1813 psi ROP = 53 fph Wiper trip 9900 ft. PUW = 40.6k Drilling cement 10,350 ft to 10,550 ft Qp = 2.78/2.92 bpm CTP = 2300 psi ROP =20 - 60 fph . Wiper to 9900' Pressure test squeeze to 1000 psi. good test. RIH to 10550. High pressure for corresponding rate. POH for mud motor. Change out motor. Recovered junk from around the mill. Legal Well Name: Common Well Name: Event Name: Contractor Name: Rig Name: C-25 C-25 REENTER+COMPLETE NORDIC CALISTA NORDIC 1 Hours Task I Code NPT +______ __m 1.63 ZONISO C 10/6/2004 08:25 - 10:03 10:03 - 10:21 0.30 ZONISO C 10:21 - 10:30 1 0:30 - 11 :00 0.15 ZONISO C 0.50 ZONISO C 11 :00 - 11 :42 0.70 ZONISO C 11 :42 - 13:15 1.55 ZONISO C WEXIT 13:15 - 13:35 0.33 ZONISO C WEXIT 13:35 - 14:15 0.67 ZONISO C WEXIT 14:15 - 14:30 0.25 STWHIP C WEXIT 14:30 - 15:40 1.17 STWHIP C WEXIT 15:40 - 17:30 1.83 STWHIP C WEXIT 17:30 - 18:05 0.58 STWHIP C WEXIT 18:05 - 18:30 0.42 STWHIP C WEXIT 18:30 - 23:10 4.67 STWHIP C WEXIT 23: 1 0 - 23:30 0.33 STWHIP C WEXIT 23:30 - 23:40 0.17 STWHIP C WEXIT 23:40 - 00:00 0.33 STWHIP C WEXIT 10n /2004 00:00 - 02:00 2.00 STWHIP N DFAL WEXIT 02:00 - 03:00 1.00 STWHIP N DFAL WEXIT SCANNEr) NOV 1 ~ 20Dû Page 2 .. Spud Date: 9/24/1982 End: Printed: 10/1812004 9:58:52 AM ) ~.)t> Page 3~ BP EXPLORATION Operations Summary Report C-25 C-25 REENTER+COMPLETE NORDIC CALISTA NORDIC 1 Legal Well Name: Common Well Name: Event Name: Contractor Name: Rig Name: Spud Date: 9/24/1982 End: Start: 10/1/2004 Rig Release: 10/12/2004 Rig Number: N1 Description of Operations From - To Hours Task Code NPT Phase Date 15IX.5"X.25" white teflon like material. ( gasket??) RIH with second window milling assembly. Dry tag 10549' uncorrected. Mill cement FS = 2100 psi,2.8 bpm @ 2350 psi 3-4K WOB, 60 fph. Drill cement to 10558.4 TOW. Mill window 2.76/2.86 bpm @ 2170 psi. FS 2100 psi. Milled window from 10,545' to 10,551.5 ft Drilled formation from 10,551.5' to 10,561ft Back reamed window 10,561 ft to 10,540 ft Ream window 10,545' to 10,551 ft Started Mud swap at 1255 hrs RIH and tagged at 1 0,561 ft. Dry tagged @ 10,561.5ft POOH chasing flo-pro to surface LD Milling BHA PU Drilling Build Section BHA # 4 Motor at 2.83 deg bend RIH, no shallow hole test due to motor bend RIH and tagged at 10561 ft, corrected counters, Orient TF to 90 R Directionally drill 70 R, 2.42 I 2.49 bpm at 3700 psi. FS = 3580 psi. 1-2K WOB, 100 fph. Drill to 10836. Continue directionally drilling 90 R, 2.47 12.53 bpm at 3 psi. FS = 3550 psi. 1-2K WOB, 40-100 fph. Drill to 1 , 20'. Wiper to 10,550'. Directionally drill 90 R, 2.42 / 2.49 bpm at 3 psi. FS = 3550 psi. 1-2K WOB, 36K up wt, 20K dn wt, -100 fph. Drill to 11,015ft. End of build. POH for lateral BHA with resisti\l Change out BHA for lateral embly with resistivity. PJSM on cutting off CT with hydr c cutter. Cut off 100 ft CT for Cr tubing. PU RR Bit # 2 RWD BC. Installed CT ,pulled tested and pressure tested RIH, sh w hole test at 4000 ft Good, RIH At 1 , 10ft, stopped to tie-in. Logging up to tie-in to orginal Ibore for RA Marker Started mud swap while logging RIH to log RA Marker. Logging RA Marker Corrected -2ft. RIH and tagged at 11026 ft RA Marker at 10,556.5 ft TOW 10,554.30 ft RA Marker @ 10,556.5 ft BOW @ 10,561.2 ft Drilling TF 111 R Q = 2.50/2.57 bpm, CTP 3400/3519 psi. Finished Mud swap. Vp = 298 bbl initially. ROP averager 70 to 100 fph Wiper trip to window. Clean Drilling TF 111 R Q = 2.50/2.57 bpm, CTP 3665 / 3800 psi. Vp = 294 bbl. Condition mud recieved from MI creating higher than usual off bottom circulating pressure Orient TF around Drilling TF 82 to 90 R Q = 2.59/2.69 bpm, CTP 3565/3750 psi. DFAL WEXIT DFAL WEXIT 1.00 STWHIP N 1.75 STWHIP N 10/7/2004 02:00 - 03:00 03:00 - 04:45 WEXIT 0.25 STWHIP P 04:45 - 05:00 WEXIT 7.00 STWHIP P 05:00 - 12:00 WEXIT WEXIT 0.67 STWHIP P 0.25 STWHIP P 12:00 - 12:40 12:40 - 12:55 WEXIT WEXIT WEXIT PROD1 PROD1 PROD1 0.42 STWHIP P 2.58 STWHIP P 0.08 STWHIP P 0.25 DRILL P 1.95 DRILL P 0.80 DRILL P 12:55 - 13:20 13:20 - 15:55 15:55 - 16:00 16:00 - 16:15 16:15 -18:12 18:12 - 19:00 PROD1 5.00 L P 19:00 - 00:00 PROD1 1.00 DRILL P 00:00 - 01 :00 1 0/8/2004 PROD1 PROD1 0.33 DRILL P 1.67 DRILL P 01 :00 - 01 :20 01 :20 - 03:00 PROD1 PROD1 2.00 DRILL P 4.33 DRILL P 03:00 - 05:00 05:00 - 09:20 PROD1 PROD1 1.92 DRILL P 0.83 DRILL P 09:20 -11:15 11 :15 - 12:05 0.42 DRILL P 0.33 DRILL P 12:05 - 12:30 12:30 - 12:50 PROD1 12:50 - 15:10 PROD1 PROD1 P P 15:10 -15:55 15:55 - 16:45 PROD1 PROD1 0.42 DRILL P 1.33 DRILL P Vp = 293 bbl. Drill to 11350'. PROD1 Wiper to wiindow. Restivity tool failed to repeat. 0.50 DRILL P 18:30 - 19:00 Printed: 10/1812004 9:58:52 AM SCA.NN· Ef. . NO. \.1. -¡ f! 2 i 0' DOL (' STATE OF ALASKA _I' ALASKA: _IL AND GAS CONSERVATION CO\...J1ISSIOßh:CE REPORT OF SUNDRY WELL OPERATION~ ",w "IE'!!') \; ~ <:'.. L,,· the JUN 2 2 2004 l~:aska O¡L&"XC:6~.¡.' C[jj/.. CIJ~,! IT' al'{er . rwnor:::'IlC o Time EXf&nsion o Annular Disposal o Perforate o Stimulate ORe-Enter o Operation Shutdown o Plug Perforations o Perforate New Pool o Suspend BR Wel BP epair ull Tubing Operations Performed o Abandon o Alter Casing o Change Approved Program Wel Suspended To Dnll Number 195-011 5. Permit 4. Current Well Class: B Development o Stratigraphic Test 2. Operator Name: BP Exploration (Alaska) Inc. o Exploratory o Service 6. API Number: 50-029-20819-01-00 Address: P.O. Box KB Elevation 3. 99519-6612 Anchorage, Alaska 196612, (ft) Well Name and Number: 9. 72.9' 7. PBU C-25A Prudhoe Bay Pool Pool(s) Prudhoe Bay Field IBP at 9940', Sand at 10144' None Plugs (measured) Junk (measured) feet feet feet feet 11600 9039 9940 8787' ADL 028310 condition summary measured true vertical measured true vertical 10. Field 8. Property Designation: Present wel Total depth: 11 Effective depth: Collapse 2670 4760 Burst 5380 6870 TVD 110' 2676' 7770' MD 110' 2676' 8729' Size 20" x 30' 13-3/8" 9-5/8" Length 110' 2676' 8729' Casing Structural Conductor Surface Intermediate 7020 7500 8160 8430 9022' 9039' 7661' 8946' 8582' - 10382' 10168' - 11600' 7" 4-1/2' 1800' 1432' Production Line Liner 10710' -11470' Below IBP & Sand: Perforation Depth MD (ft): 9036' - 9039' Perforation Depth TVD (ft): 9985' 13Cr80 & L-80 Baker 12.6# 7" x 4-1/2" Baker 'SABL-3' packer; 7" x 4-1/2' packer; 4-1/2" HES SSSV 'X' Nipple 4-1/2' Tubing Size (size, grade, and measured depth) I 9851 9937' 2160' (type and measured depth) 12. Stimulation or cement squeeze summary: Intervals treated (measured): Packers and SSSV Treatment description including volumes used and final pressure: Injection Data Casina Pressure Re 13. Pressure Tubin Water-Bbl Gas-Met Oil-Bbl o Service o WDSPL f C.O. Exempt o GINJ 0 WINJ - Sundry Number or NIA N/A Class after proposed work o Exploratory B Development Status after proposed work: i o Gas o WAG 15. Wel 16. operation to operation: o Copies of Logs and Surveys run B Daily Report of Well Operations B Well Schematic Diagram Prior to wel Subsequent 14. Attachments: e foregoing ìs true an Contact Rob Tirpack, 564-4166 Printed Name Terrie Hubble 17. Technical Assistant Title Phone OR\G\N 12/2003 Revised Signature Form 10-404 06/06/04 N/A 06/12/04 Nabors 2ES Accept Spud: Release: Ria: ( ~ C-25A W orkover Prudhoe Bay Unit 50-029-20819-01-00 195-011 Well: Field: API: Permit PRE-RIG WORK 10/03/03 SET BAKER 2-112" IBP MID ELEMENT AT 9940.5' IN PACKER BORE. DEPTH REFERENCED TO IBP SET RECORD TIE IN PASS DATED 23-DEC-2002. 136 BBLS CRUDE PUMPED PRIOR TO RIH. DID NOT TAG TO. 1.375" FISHING NECK LOCATED 7.12' ABOVE COE AT 9933.4'. TOTAL IBP FISHING LENGTH 11.05'.5500# PULL RELEASE- TWO ELEMENTS. SLACK OFF WEIGHT ON IBP PRIOR TO LOGGING OFF. PAD OPERATOR NOTIFIED WELL LEFT SHUT IN. 04/06/04 "CTED FOR CHEMICAL CUT TO 7781' '., TOP OF IBP. 100# SLUGGITS @ 1/2 WHIDDON CS DUMPED "./04 SET 4 1/2 WHIDDON CS @ 7784' SLM. PULLED RK DGLV @ 7573' SLM STA 2. PULLED 4 FROM 7784' SLM (CS EMPTY). STA 2 HAS EMPTY POCKET. RDMO WHIDDON (3.80") 1/2' SLM W/4 OS/29/04 STRING SHOT TWO STRANDS FROM 7740'-7752'. CHEMICAL CUT AT 7750', 20' ABOVE COLLAR IN FIRST GOOD JOINT ABOVE COLLAPSE. DEPTH CORRECTED TO TUBING TALLY DATED 3-29-95. TIED INTO GLM AT 7589'. SEVERING HEAD INDICATES GOOD CUT, NOTHING LEFT IN HOLE. ( I( of3 1 Page BP EXPLORATION Spud Date: 9/24/1982 End: 6/12/2004 Operations Summary Report Start: 6/1/2004 Rig Release: 6/12/2004 Rig Number: I Legal Well Name: C-25 Common Well Name: C-25 Event Name: WORKOVER Contractor Name: NABORS ALASKA DRILLING Rig Name: NABORS 2ES Complete RDMO 01-04A. Move shop and sub base to C-25A. Sub off of location @ 1400 hours. Moving speed -1.7 mph. 19.5 mile rig move from DS 1 to C pad. Move sub base to C-25A. Sub off of location @ 1400 hours 6/5/2004. Moving speed -1.7 mph. 19.5 mile rig move from DS 1 to C pad. Lay herculite and spot the sub base over C-25A. PJSM. Raise the derrick and bridle down. Rig up and dean the floor. Shim the sub and dose the cellar doors. Work on the pre-spud checklist. Prepare the cellar and the stack for wellhead work. Description of Operations Phase Code I NPT Task To I Hours From Date PRE P MOB 13.00 00:00 11:00 6/5/2004 PRE p MOB 3.50 03:30 00:00 6/6/2004 PRE PRE P P 1.50/ MOB 6.50 RIGU 03:30 - 05:00 05:00 - 11 :30 Move the pits and the camp from OS 1 to C pad. Spot the pits, camp, shop and cuttings tank. Berm in the cuttings tank. Hold a pre-spud meeting with all rig personnel. Rig accepted @ 1500 hours 6/612004 Install secondary annulus valve. RU DSM lubricator and pull the BPV. Annulus and tubing on vacuum. RU circulating lines, taking returns to the cuttings tank. Displace diesel freeze protection fluid from the well with seawater to the cuttings tank - 3 bpm, 180 psi. Circulate a soap pill around - 10 bpm, 1,280 psi. Dry rod install the Cameron TWC and test from below to 1,000 psi. Blow down and RD the circulating lines. ND tree and adapter flange. Send in for inspection. NU BOP's. NU BOP's. Reconfigure stack and valve assemblies. Install 3-1/2" x 5" variable rams in the bottom set. Install mousehole. Fill the stack and static flow test the riser and flow line boots. MU 4-112" test joint and test the BOP's to 250/3,500 psi (Annular to 2,500 psi high). RD test joint and blow down the surface equipment. PRE P 3.50 I RIGU 11:30 -15:00 PRE P 0.501 RIGU 15:00 - 15:30 PRE DECOMP DECOMP DECOMP DECOMP DECOMP P P 1.501 WHSUR~ P 2.00 BOPSU P 8.50 BOPSU P 5.00 I BOPSU~ P 0.50 I RIGU 4.50 KILL 15:30 - 16:00 16:00 - 20:30 20:30 - 22:00 22:00 - 00:00 00:00 - 08:30 08:30 - 13:30 617/2004 The witness of the test was waived by John Crisp of the AOGCC. DECOMP RU DSM lubricator and pull the TWC. DECOMP MU landing joint and engage hanger. BOLDS and pull the hanger to the floor. PU - 125K to free pipe. PU. 11 OK once pipe freed. DECOMP PJSM. RU 4-112" tubing equipment and SLB spooling unit. LD hanger and landing joint. DECOMP LD 4-112",12.6#, L-80, NSCT tubing from 7,750'to 5,640'. LD SSSV to 5,617'. RD SLB control line spooling unit. Recovered 51 of 54 bands. DECOMP LD 4-112" tubing from 5,617' to suñace. Recovered 184 joints + 18.61' cut joint. Cut was clean, but there was a 6" crack in the pipe -5' up the pipe from the cut. Tubing joints 65 to 184 showed signs of corrosion/erosion on the threads (bottom seal) as well as pitting corrosion on the inside of the pipe. DECOMP RD 4-1/2" tubing handling equipment. DECOMP PU 4" test equipment. DECOMP TA~t Rnp'~ with "'" t""..t :.....1.... 01"'\"" &__& _ _, ,L P P P P P PULL P BOPSUR P BOPSUR P 1.00 I PULL 1.00 PULL 1.00 I PULL 2.50 I PULL 4.00 I PULL 0.50 0.50 1.50 13:30 - 14:30 14:30 -15:30 15:30 - 16:30 16:30 - 19:00 23:00 23:00 - 23:30 23:30 - 00:00 00:00 - 01 :30 19:00 6/812004 ( -( Page 2 of 3 BP EXPLORATION Spud Date: 9/24/1982 End: 6/12/2004 Operations Summary Report Start: 6/1/2004 Rig Release: 6/12/2004 Rig Number: I Legal Well Name: C-25 Common Well Name: C-25 Event Name: WORKOVER Contractor Name: NABORS ALASKA DRILLING Rig Name: NABORS 2ES Change out handling tools and clear the floor. Make up 81/8" Washpipe BHA to 430'. BHA consists of: Mill Shoe, 4 jts Washpipe, Boot Basket, Bumper Sub, Oil Jars, Double Pin Sub, Float Sub, 9 jts Drill Collars, and a Crossover the 4" HT40. TIH to 7,716' picking up 4" 15.7# S-135 HT -40 drill pipe from pipe shed, Rabbit drill pipe Break circulation, Wash down & tag top of fish at 7,745' dpm, wash and ream down 7,745 to 7,868' Circulate bottoms up at 420 gpm 1130 psi, full returns - monitor well - pump slug Pooh, stand back BHA - Lay down boot basket, recovered one control line band and two gallons scale for boot basket Make up 81/8" Tri-5tate outside mechanical cutting With 4 jts of wash pipe TIH to 6,494' Continue TIH 6,494 to 7,709' Break circulation, Wash down tag top of fish at 7,746' dpm, Rotate over top of fish and wash down at 3 bpm 130 psi, rotating slowly to 7,869' - Pick up rotating at 30 rpm's and locate collar at 7,852' with increase in torque and 2K overpull _ Cut collar with 30 rpm's 5000 FUlb torque Monitor well, Pump slug - Pooh, stand back Drill collars Lay down BHA, recovered 108' of 41/2 tubing - Tubing had 18" section collapsed and split Pre-Job safety meeting, Rig up SChlumberger wireline, RIH with 3 5/8" Chemical cutter, Tag top offish at 7,852', work into top of fish - Continue RIH to 9,929', set down on sluggit on top of IBP - Log up and correlate to tubing detail dated 3/29/95- Cut tubing at 9900' ELM, middle of first joint of tubing above packer - Left in hole above packer: 19.6' stub, 10' pup, 4 1/2" 'X' nipple, 10' pup - Pooh and rig down Schlumberger wireline Make up 81/8" overshot dressed with 4 1/2" grapple - TIH with 4" drill pipe to 7,765' - Break circulation & wash down, Tag top of fish at 7,856' and latch, Pull 20k over and fish came free Circulate bottoms up at 546 gpm 1920 psi Pooh with Tubing fish, Lay down fishing BHA Rig up tubing tongs, Lay down 4 112" 12.6# L-80 tubing, Tubing thin and pitted. Finish laying down 4 1/2" tubing, total 47 jts and two cut jts, recovered 21.87' of first joint of tubing above packer, 19.6' left In hole - Rig down tubing tongs, Clean and clear rig floor Make up Clean out BHA with 61/8" od x 41/2" IDshoe, 12' of extensions, 4 3/4 x 3 3/4" Inter dressing mill to clean up tubing stub - Two 4 3/4" boot baskets and 7" casing scraper - 4" drill pipe to 40' above liner lap - Two 7" od boot baskets and 9 5/8 casing scraper for cleaning 9 5/8 casing - TIH to 7,100' Cut and Slip 106' drill line, Service top drive and grease crown Continue TIH with clean out Bha to 9,875' - Tag 7" liner top at 8,581' dpm, rotate string to enter liner with no problem Wash down from 9,875', tag tubing stub at 9,895 -Continue wash down polishing stub to 9,905' - Gain 30 DSI cumc Description of Operations Code I NPT I Phase DECOMP DECOMP P P Task 1.00 I FISH 2.50 FISH From - To I Hours 02:30 05:00 - 01:30 02:30 Date 6/8/2004 DECOMP P 8.00 I FISH 05:00 - 13:00 DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP P P P P P P P P P P P P P P P P P P P 1.50 I FISH 1.501 FISH 4.00 I FISH 1.501 FISH 2.501 FISH 0.50 FISH 2.00 FISH 3.50 I FISH 1.50 FISH 5.50 I FISH 3.50 I FISH 1.501 FISH 4.00 FISH 2.00 FISH 2.00 I FISH 5.50 I FISH FISH FISH FISH 1.50 1.50 0.50 - 14:30 14:30 - 16:00 20:00 21:30 21 :30 - 00:00 00:00 - 00:30 00:30 - 02:30 06:00 07:30 07:30 - 13:00 13:00 - 16:30 16:30 - 18:00 18:00 - 22:00 22:00 - 00:00 02:00 - 07:30 - 09:00 - 10:30 :00 10:30 - 11 - 13:00 16:00 20:00 02:30 06:00 00:00 02:00 07:30 09:00 6/9/2004 6/10/2004 (" (' Page 3 of3 BP EXPLORATION Spud Date: 9/24/1982 End 6/12/2004 Operations Summary Report Start: 6/1/2004 Rig Release: 6/12/2004 Rig Number: I Legal Well Name: C-25 Common Well Name: C-25 Event Name: WORKOVER Contractor Name: NABORS ALASKA DRILLING ~gName: NABORS2ES scraper at 8,525' Stand back one stand of drill pipe - Circulate hole clean with 500 gpm at 2330 psi Test casing to 3500 psi for 30 minutes on chart - ok Pooh - Stand back 48 stands of drill pipe in derrick for next well Pooh lay down drill pipe and BHA - Clear rig floor Pull wear bushing Rig up Compensator, Stack tongs with computer for Chrome completion Pre Job safety meeting, Make up Tail pipe assembly, Baker lok connections below packer - Run 4 1/2" 12.6# L 13Cr Vam Top completion 12 jts in hole Continue Running 41/2" 12.6# 13CrBO Vam Top tubing to 9,882' - Make up torque 4,440 ftILb with computer maker up, Jet lube Seal Guard pipe dope. PU Wt 135 k, SO Wt 115 k Rig up circulation sub, Circulate and observed 100 psi pressure increase as overshot swallowed tubing stub @ -9890' to 9898' Space out with 22.81' of pups and make up McEvoy 12 x 7" tubing hanger with 7" TC4S landing thread - Ran total 230 jts 4 1/2" 12.6# 13CrBO Vam Top tubing Reverse circulate 302 bbls filtered inhibited seawater at 3 bpm 230 psi and displace to 3400' with filtered seawater Drain stack, Land tubing string - Drop 1 7/8" ball on rod Pressure tubing string to 3500 psi, set packer at 9,876' and test tubing for 30 minutes on chart - bled tubing pressure to 1200 psi - Test annulus to 3500 psi for 30 minutes on chart-ok - Bled tubing pressure and shear DCR valve, bled all pressure to zero Set CIW 6 3/8" type 'J' two way check, test to 1000 psi from below Nipple down and set back bop stack Nipple up McEvoy 13 5/8 x 71/165000# tubing head adapter- Nipple up CIW 7 1/165000# tree with 6 3/8 bore - Test pack-off to 5000 psi for 15 minutes -ok Rig up test pump and test tree to 5000 psi with water - ok Rig up Drill Site Maintenance Lubricator, Pull two way check valve - no pressure under TWC Rig up Little Red Hot Oil truck, Test lines - Pump 151 bbls diesel down annulus taking returns up tubing "U" Tube diesel to tubing for freeze protection to 2200' both sides Set CIW 6 3/8" type 'J' BPV - Test to 1000 psi from below RD all lines, remove secondary annulus valve, secured tree. Description of Operations NPT I Phase Code Task Hours To 10:30 - 11 :00 11:00-12:30 From Date 6/10/2004 DECOMP DECOMP DECOMP DECOMP DECOMP DECOMP RUNCMP P P 1.00 FISH ~ 1.50 FISH P 6.00 FISH P 0.50 WHSUR P 1.50 RUNCO 0.50 I FISH 1.50 FISH 12:30 - 13:30 13:30 - 15:00 15:00 - 21 :00 21 :00 - 21 :30 21:30 - 23:00 RUNCMP RUNCMP RUNCMP RUNCMP RUNCMP RUNCMP RUNCMP RUNCMP RUNCMP RUNCMP 1.00 I RUNCO~ 12.00 I RUNCO~ 0.50 I RUNCONP 3.00 I RUNCO~ 2.50 I RUNCONP 0.50/ RUNCO~ 1.50 RUNCO~ 0.50 I RUNCO~ 1.50 I RUNCO~ 2.00 WHSUR I P 00:00 00:00 - 12:00 12:00 - 12:30 12:30 - 15:00 15:00 - 1'8:00 18:30 20:00 20:30 22:00 00:00 - - 23:00 18:00 18:30 20:00 20:30 22:00 6/11/2004 RUNCMP RUNCMP RUNCMP RUNCMP RUNCMP RUNCMP WHSUR/P WHSUR P WHSUR I P WHSUR/P WHSUR I P WHSUR P 1.00 1.00 2.00 1.00 1.00 0.50 01:00 02:00 04:00 05:00 06:00 06:30 - 05:00 - 06:00 - 00:00 01:00 02:00 04:00 6/12/2004 RELEASE RIG @ 0630 hours on 6-12-04 f Completion on 6/12/04 FAO/fA. blll.t:!r C-25A Present ---...,--- G" erN tvt:EVOY OTIS 72.9' 39.15' 4100' 93 @ 10709' 1 0049' 88OO'SS TFEE = Wfi'LHEAD = ACTUATOR = KB. B...EV : BF. B...EV = KOP= Max Angle = Datum M) = Datum TVD :; X Nipple @ 2160' (3.813") ~fo 7l¡) 2.347 L-80, 10 CSG. 72#, 3-3/8M 13Cr-80. VAM-ACE 2.6# 4-1/2' TOP OF 7" L~ TIŒACK SLV. 10 = 6258M 9-5!8" X r HvV lNR TOP PKR 10 = 6,198~ 9-5/8M X r TrN LNR HGR, 10 = 6.146M SLM @ 9851 CSG. 47#, L-80. ()::: 8.681 9-518" @ 9830 @ 9851 @ 9874 @ 9885 -10' Pup Joint- X Nipple (3.813" -10' Pup Joint -S-3 Packer -10' Pup Joint -X Nipple (3.813") -10' Pup Joint - iaue Overshot TOP OF 4-112" LNR TIEBA CK SL V. ID = 5.25" 7" TIVI/ LNR TOP A<R, D = 4.370" r x 5" TIW LNR HGR, ID = 4.340" () = 6.184' Top of sand between 10144' and 103001 MD 29#. L-80. .0371 bpf P8~ORA TION SUfv1f\.o1A RY REF LOG; DA· SHCA ON 10/09/82 ANGLE AT TOPf-'E.RF: 93@ 10710' Note: Refer to Froduction DB for historical perf data ~ I S~ I INTERVAL I Op~Sqz I ~ 2-1/2" 4 10710 -1082.5 0 03129/95 2-1/2" 4 10875 ·10975 0 03/29/95 2-112" 4 11035-11140 0 03/29/95 2·1/2" 4 11170-11295 0 03/29/95 2·1/2" 4 11340-11470 0 03129/95 7"LNR. Tm LANDNG COLLAR, Ð = 2.99 PBID - WB... PRUDHOE 8A Y UNIT WaL: C-25A PERMIT No: 1950110 API No: 50-029-20819-01 9, T11N, R14E, 1535' SNl & 1031 BP exploratIon (Alaska) SEe D = 3.958" DA TE REV BY OOfvM3\lTS Ofiõšiõ3 ãi5iitP MAX ANGLE CORRECTON 09/05/03 PWEIKK MN Ð CORRECTk)N 09/15/03 CMJITLP DATUM M) I REF LOG 02102104 Ft. 120103 I BP-1/3103 I 04 - 1roJõ 12.6#, L-aO, ,0152 bpf 4-1/2" LNR. OOM\£NTS ORIGINAL COM PLETION RIG SIDETRACK CORRECTX:>NS LV C/O BP&FISH PWEItI1 TBG COlLAPSE & BP SET JCM'TlP PUlL BP BY REV DATE 10/17/82 03131/95 õãiõiiõ1 09120102 'i2iõ6iõ2 'i2i23i'õ2 õ3i2ãiõ3 \¡UG'~ Ie /2- i '2-004- I)(JS £!z( I cJ- ( STATE OF ALASKA ( ALASKA OIL AND GAS CONSERVATION COMMISSION APPLICATION FOR SUNDRY APPROVAL 20 MC 25.280 o Other o WaÎver o Time Extension o Annular Disposal o Operation Shutdown 0 Perforate II Plug Perforations 0 Stimulate o Perforate New Pool 0 Re-Enter Suspended Wet Type of Request II Abandon 0 Suspend o Alter Casing 0 Repair Wel o Change Approved Program 0 Pull Tubing 1 5. Permit To Drill Number 195-011 /' 6. API Number: ,,/ 50- 029-20819-01-00 D Exploratory D Service 4. Current Well Class: 181 Development / D Stratigraphic Test 2. Operator Name: BP Exploration (Alaska) Inc. 99519-6612 Anchorage, Alaska 196612. KB Elevation (ft): Address: P.O. Box 3. PBU C-25A r" Well Name and Number 9. 72.9' 7. Junk (meãšüred) None Collapse Pool(s): Prudhoe Bay Field / Prudhoe Bay Pool Plugs (measured): IBP at 9940', Sand at 10144' / ADL 028310 ~ MD 10. Field Property Designation: 5380 6ã7õ ~~ ã43õ .~ 2670 4760 110' 2676' =;rm 110' 2676' äm 20" X 30' 13=3iã" 9-5/8" 11Q: 2676' äm 7661' - 9022' 8946' - 9039' 8582' - 10382' 10168' - 11600' - 11. Tõtãi Depth MD (ft): 11600 Càsirigl Structural Conductor Surface Intermediat" .EI:Qs1! ,,...+i^n Liner 8. Tubing Size: , 12.6# šãkãr 4-1/2' X 4-1/2" 7" 4-V2' Perforation Depth MD (ft): Perforation Depth TVD (ft): Below IBP & Sand: 10710' - 11470' 9036' - 9039' Packers and SSSV Type: 7" x 4-1/2" Baker 'SABL-3' packer; 7' packer; 4-1/2" HES SSSV 'X' Nipple 1800' 1432i Liner 13. Well Class after proposed work: D Exploratory o Service Attachments: 181 Description Summary of Proposal D Detailed Operations Program 12. 181 Development / B Abandoned D WDSPL D Plugged DWINJ proposed work: DGas DGINJ Well Status after DOil DWAG 15. D BOP Sketch 7 2004 July 1, Date: 14. Estimated Date for Commencing Operations: Mary Endacott, 564-4388 Prepared By Name/Number: Date 0¿/!?ß)/f: Terrie Hubble, 564-4628 Sundry Number:JOq.232.. JJItA J Contact of my knowledge. CT Drilling Engineer 564-4388 16. Verbal Approval Com mission Representative. 17. I hereby certify that the foregoing is true and correct to the best Printed Name Mary Endacott Title . f Si~nature ~{J"~f1~?!Jff Phone "....... bI Notify Commission so that a representative may witness Conditions of approval Other: Ai ¡? rC 1-:0 r IV\- 10 Approved B . Form 10-403 Revised 12 2.Sß ( t-t/··ll { D Location Clearance ç'; J~ti t~,C¡¿ ft: ~'\( J D Mechanical Integrity Test D BOP Test D Plug Integrity . ;," J..,t...f 'It ¿j, U 4cl veJ ')\H\l 'i I,,, JU~ ~ Date øvøs arL BY ORDER OF THE COMMISSION ¡, A, COMMISSIONER ì~ f l"<. t~ ('" Il~1 ,/ ( (' \~-,.....', t bp ... ......... ..~- Winton Aubert Petroleum Engineer Alaska Oil & Gas Conservation Commission To: From: M.S. Endacott CTD Engineer sidetrack June 15. 2004 Date: C-25A as part of the CTD Pending production flow test, well C-25A is scheduled for a through tubing sidetrack with the SLB/Nordic 1 Coiled Tubing Drilling rig on 7/30/04. The collapsed tubing was replaced during a rig work over, the well will...../ be flow tested and if judged non commercial, the sidetrack will proceed. The sidetrack, C-25B, will exit GUt of-- the existing 4 Yz" liner off a whipstock in Zone 1 and target Zone 1 sands. The existing perforations will be isolated by a packer below the whipstock and liner cement~ote that a hollow, perforatable whipstock will be used for the purpose of restoring communication with the existing perfs at some point in the future. The following describes work planned for the P&A and is submitted as an attachment to Form 10-403. A schematic diagram of the proposed sidetrack is attached for reference. P&A operations for well Re: / tray Pre CTD Summar 1) Slickline - dummy GLMs 2) Coil -Drift with dummy whip, set packer and whipstock The pre CTD work is slated to begin on 7/1/04. If/aMI ~w4f Mary En~cott CTD Drilling Engineer 564-4388 Well File Sondra StewmanlTerrie Hubble CC: C Dc ttcc.eL t? J '\ --e.J.. -' Completion on 6/12/04 FADM IJIlLtr X Nipple @ 2160' (3.813") I - 2.6#. 13Cr-80, VAM-ACE I 4-1/2' Œr @ 9851'1 ~ 9900' ¡ELM/9890' SLf\ its @ 9929'IELM /' e~i9n:l)sed GLM MD C 3' MD - 4-112" X 1.5" - SV ~' MD - 4-112" X 1.5" - OV 5' MD - 4-1/2" X 1.5" - DV 2' MD - 4-1/2" X 1" - DV Tubing IaJLI~ -10' Pup Joint- X Nipple (3.813") @ 9830' -10' Pup Joint -S-3 Packer @ 9851' -10' Pup Joint .X Nipple (3.813") @ 9874' -10' Pup .Joint - Îaue Overshot @ 9885' .-------...--('" C-25A Present ~(p -¡~ ._._.._-_._.._..--~_. CSG. 72#, L-8e. 10:: '12.34'1 -.-';.,"---' 6- erN Iv'çEVOY OTIS 72,9'1 39.15' 4100' 93 @ 10709' 1 004 g' 8800' SS IF.Œ :: WËLlHfAD ~ ACTUA TOR = KB. 8..EV =- ". OF. 8..EV :: KOt>= ~x Angle = Datum 11.10 = DatumTVO :: 3-3í8- I i I I j TOP OF 7" LNR TIEBACK SlV 9-5í8" X 7" TW LNR TOP PKF 9-5/8" X 7" TIW LNR HGR, 10 9-5/8" CSG. 47#, L·80, SAßL-3 BAKER 1BP SET '2" HES X NIP, ID:= 3.813" " HES XN NIP, 10 = 3.725- ~-l 4~1/2" WlE< 1D IT LOGGED 09/23/95 TOP OF 4-112" LNR TIEBACK SLV. ID = 5.25" 1-( 7" TI\N lNR TOP'PK¡~:üJ-;~- r'""7;- X 5" TrN LÑr~ï~G"R:ï¿ï;;,-.t34<rl· 7" LNR. 29il. L-80, .0311 bpf. 10 = 6.184' Top of sand between 10144' and 103001 MD FE~Of~TK)N SUMtv\Þ..RY REF LOG: DA - SHCA ON 10/09/82 ANGLE AT TOPÆRF: 93 @ 10710' Note: Refer to F.1roduction DB for historical perf data SIZE I SPFI INTER\! All OpnlSqz J DATE 2::ïiF ¡ 10710 -10825 Õ õ3i2'9i9'5 2-1/2" 4 10875 -10975 0 03129/95 2-112" 4 11035·11140 0 03/29/95 2.'1/2" 4 11170 -11295 0 03/29/95 2-'/2" 4 11340 -11470 0 03/29/95 Tm LANDING COLLAR, 10 = 2.99 PBTD WB.. PRUDHOE SA Y UNIT WELL: ()"25A PERMIT No: 1950110 APlI'.jo: 50-029-20819-01 9, T11N. R14E. 1535' SNL & 1031 BP exploration (Alaska) SEC ID = 3.958" REV BY COMMENTS ëMõiT'LP MAX ANGLE CORRECTION FWEJKK MIN ID CORRECTION CMOITLP DA rUM MD I REF LOG Pv'VElTLP SAND A..UG-4/20/03/1BP-1/3/03 12.6#, L-80, .0152 bpf 4-1/2" LNR, DATE 07iõ5iõ3 õ9iõšiõ3 õ9i15iõ3 02102104 õi1iiJõiI. COMMENTS ORJGINAL COMPLETION RJG SIDETRACK CHJKAK CORRECTlONS DTR'KK GL V C/O JBlWtª' IS? & FISH PJVEIUh raG COLLAPSE & IBP SET JCMfTLP PULL IBP BY REV DATE 10/17/82 03/31/95 õ8iõ1iõ1 õ9i2õiõ2 12iõ6iõ2 12i25iõ2 õ3i2ãiõ3 10300' AND GOES SAFETY f. . ES: WELL> 70° @ HORlZONTAL@ 10552' ~;o?o§~ RWO/CTD Sidetrac~ :( ] HES X NIP, ID = 3.813' 4-1/2" 2160' 1 ~ ~ TR~= ~ WELLHEAD = rvk:EVOY ACTUATOR = OTIS KB. ELEV = 72.9' BF. ELEV = 39.15' KOP = 4100' Max Ang~~ = 93 @ 10709' Datum MD = 10049' Datum 1V D = 8800' SS 1 4 GLM's { ~ u µ 2676' 12.347 CSG, 72#, L-80, ID = 13-3/8" r J ~ 1 l SECTION MILL) 8779' I 99oõ'I-~ I Tubk1g cut H :;;~ ~ 8729' 9-5/8" MILLOUT WINDOW F1 r- 1 8582' 8590' 8595' LNR TIEBACK SLV, ID = 6.258' rap OF 7" \9-5/8" X 7' TW LNR TOP PKR, ID = 6.198" [9-5/8" X 7" TW LNR HGR, ID = 6.146' HES X NIP, ID = 3.813"1 4-1/2' J ~ 8729' ID = 8.681 CSG, 47#, L-80, \ 9-5/8' PKRl 7" X 4-1/2' 9851 1 HES X NIP, ID = 3.813"-\ 4-1/2" { . ID = 3.958' 12.6#, CR, .0152 bpf, TBG. r 4-1/2' ID = 3,958'J- 9983' I 1- 10551 1 X 4-1/2" BKR SABL-3 PKR, 10 = 3.875' 4-1/2" HES X NIP, ID = 3.813" 4-1/2" HES XN NIP, ID = 3.725" 4-1/2" WLEG , ELMO 11" LOGGED 09123/95 7' 9937' { ~ . I I I 12.6#, L-80, .0152 bpf, TBG, [ 4-1/2" ] 1-1 Top of 3-1/2" Liner & TOC 1 3-1/2" X NIP, ID = 2.813" 3-1/2" XN NIP, ID = 2.75' ~ - TOP OF 4-1/2" LNR TIEBACK SLV, ID = 5.25' 7" TW LNR TOP PKR, ID = 4.370" [ 1 3-3/16 x 2-7/8 X-over - ~ 7" X 5" TIW LNR HGR, ID = 4.340' ID = 6.184' [ 7" LNR, 29#, L-80, .0371 bpf [ § X 2-7/8" cmt'ed and perfedl-J 12000' I r Mechanical Hollow whipstock ~ I ~ ÆRFORA TION SUMMARY REF LOG: DA - BHCA ON 10109/82 ANGLEATTOPÆRF: 93 @ 10710' Note: Refer to Production DB for historical perf data SIZE' SPF INTERVAL I Opn/Sqz I DATE 2-1/2" 4' 10710 -10825 isõiãted ~d 2-1/2" 4 10875 -10975 isolated proposed 2-1/2" 4 11035 -11140 isolated proposed 2-1/2" 4 11170 -11295 isolated proposed 2-1/2" 4 11340 -11470 isolated proposed :F111515' 12.6#, L-80, .0152 bpf, 10 = 3.958~-J 11600' I ~ 1 LANDING COLLAR, ID = 2.99 TW I PBTD - '1ft. PRUDHOE SAY UNIT WB..L: C-25B ÆRMIT No: API No: 50-029-20819-02 19, T11N, R14E, 1535' SNL & 1031 BP Exploration (Alaska) SEC DATE REV BY 03i2ãiõ3 ~ PULL IBP 07/05/03 CMOfTLP MAX ANGLE CORRECTION 09/05/03 PNElKK MIN 10 CORRECTION 09/15/03 CMOfTLP DATUM MD I REF LOG 06/15/04 MSE PROPOSED CTD ST COMMENTS [4-1/2" LNR, COMMENTS ORIGINAL COM PLETION RIG SIDETRACK CHlKAK CORRECTIONS DTRlKK GL V C/O JBMltlh IBP & FISH PNEltlh TBG COLLAPSE & IBP SET BY REV DATE 1 õi17iå2 õ3iiii95 õãiõ1iõ1 09/20/02 12iõ6iõ2 12i23iõ2 Subject: Revised C-25A schematic attached From: ,"Endacott, Mary S" <EndacoMS@BP .com> Date: Fri, 18 Jun 2004 09:46:59 -0800 To:.winton_aubert@admin.state.ak.us ' CC: 1tl:lubblß, Terri~C'<Hubble TL@. ·BP~c()m> "'. "',., ..........'" ,.......... " ' Winton Please find attached the schematic of the well as it should be before CTO moves on. The C-25A schematic you have shows the well as it is when the workover rig moved off. Service coil is scheduled to move in when 2ES moves out of the way and, as post rig work, remove the inflatable bridge plug and clean out the sand. The well will then be put on production, if it's determined to be non-commercial, CTO will sidetrack it. «C-25Apost RWO CO.ZIP» Mary S. Endacott Coil Tubing Drlg Engr 907-564-4388 737d endacoms@bp.com C-25Apost RWO CO.ZIP application/x -zip-com pressed base64 $A~erVNOTES::~ ELL >70~ @1~OO' AND .GO.ES :HORlZONTAL@ 1()~52' C-25A TREE = cr0i WELCHEA..P:= M¡;8(OY AêTiJATQR" -----oTi8 kS.ELEV:: '1'2:9' B¡::.:·:ËLËV··;·..·..·····.....·39:1:S; 6' 3" 10=.3.8 X nippl.e: 2160' KOP = 4100 - - :M~x Angle = .9'3@. 101:09 'Ö~ijjm'M6';;"""" ..... "'i'ö'ö''¡~g', tlat urn TVb = SliOO' S 8 \3AS UFTMAN.DRSLS MD JYP ·:D~ riPE VLV' LATCH I PPRT PATE 4194 4286: 14 CÂ'~MÞIQ~ RK :9· ,09>',20102 7589 6894' 3"S CA-MMGEMPTY . 04107104 .8~ O~ f~02 ~O Cf.;..M¥G PM'( :RK :9 09/;ZOfQ2 CHEM:CUTTI3G:(05/29'J04) PNRTIA ç-rß.ú· 'coÜ,A P$E,jP·~:1·..68···(ORltn:.(l2lößjÙ2} 11~[)9V"t ;;:êp.9',;:·a!79.~. .rs:I=C:T.IO<N/M.!LL) . 4.1' i::t:::Hès XNIP/iD: ,=. 3\E!:1:t,: r:~:'f 111u'·:~~R)M.~,I;'l~R.::p::~':~:a!5.h: 1:@"'HÉ8'~'NI~(ID~':~:~:n~' .1. A: ,Vli··H.~8::><~:f NIP~' ::IE>:~);J~S~:~ I 42:1:?·'.'.~p~G,::J. ELM.I::((fq:rø~.Ep·: P~f~~!9.~ I lJW9f'pN'~qQ::4/:2QfQ~ . ~ ·'7~'t~.:i:.~JR:tP&~~R..:fÞ:7,A·,'~1.d~ - '7 ":X·:5i~ :ID: =:.3:èse' I.,.NR:TI~ef\:ÇK·~·W: t2:6*;:VØ:qi,,.Ö1J~:bÞf:, 1,,:,P~IR¡;i§.# 11· 31B;' èsèI71#iL~èo,:ib = 12.347 tOPp~:7".;LNR TIE~i.\(;K$~V.IJD .=:B:2~8" 3"·X7"TMr: tNR:::r9P·.pk:R:,·JD.;;:~,)~ ~"~ g;; Eifs"<XT'T'IV;. ~N~;.t:lqRi:,19=ßJ:46'1 9'·5i8":ÖSG~A7#, 'L.-Sö .10 =:So'slh" .: 1- tlf: :rQP, Qf :+:ti2!'iØ:q., :T~.tA.·NÖINGCOLLAR, 'PBTti ;", ,:'E~RpOBA:n9~:.8:QMM~'~·. RËþ'Ür&> 1.ûl 0'91 ft2 . .~~: ~:tP710!, .,... . :tø::Pt6d,iJ'¢ Wn:DBtÖY·h¡:sMM~tþ~rf:Ø ~:t~' INTERVA'L .: ò:þnfsq{::: DATE ~ .'OW.?~f~.$: :ç) :ß~j2$~p b -0'3/2:9195 Q. :p~t~9[:95. o ·p·~j:?~r$:? DA,;..<8HC/.I"O'N' A:t1Þ:L:E':A:r:tqP:P.ËRF;: :qr1q<m,~:25: tOËir~:'(lp~t~ '1.03.5<;; 1114ä 11J:lPf11:~,~~ 1:}~4¡jF1:1:~TQ R~f~:r, §W :-1 4' if 4. "4: NqtW ~ fi:1:jr~ '1~V*:' 2:'1j2~i 2:;;YZ' ::t~ 1}~' I '~'1'1600' '.1 'W¡¡:{ ~LJ8H9E:Øf\\(:l;)Nlf :'WËL.t:.::¢·~·iM:· P~~ÞI,l.f·~:Ø::::~:~~p~·t·p.., ... ~þ.r:N~;:ß·ú~:ø~~~~Ø:8} !}Jll ·:SJ=ç.:.1'$:::tftN(·R1:4~iJ:5,~$!,SNL.&jQ~H 'ª~~RI9tatiQ:~(:I\~~~.~.a) Ib:.=::3 .9613' , DAiTJ: þUtJ:5iÖ.3,. f!QjQÞ:fP.~ . 01'5.2': ~p{i '1t6#~'L~8~ :LNR;' '4~Ü2; DATE REN'8Y CO MM Ef'-lTS '10l11iä~ Ö,RlGIHA( ·.cOMPLEtION '. ~~1.3,1,i9~ .RI (;::,s.iDtr~:~¢J<· . O,8/0.1Jatc.H1~·1<C:ORREcrlo.N9 :9W~9J.o.1.·.D1JW~K ·ØLY',()fp . :1 :~~06l(J~~:SM:ftlh :}:2t~~J:Q~ .: :PýV~,tIH jj:ji18{QJ· JCMrn::p" ~l J~5-D/( , ' ,: MEMORANDUM State of Alaska Alaska Oil and Gas Conservation Commission TO: }c\ Julie Heusser, J< '1~~' DATE: J.t\Y Commissioner ~ Tom Maunder, /!ì ry{) --0 "- P. I. Supervisor '-"\,"'1 April 23, 2001 THRU: FROM: Chuck Scheve; Petroleum Inspector SUBJECT: Safety Valve Tests Prudhoe Bay Unit C Pad Mondav. April 23. 2001: I traveled to BPXs C Pad and witnessed a portion of the 3D-day retest of the safety valve systems. As the attached AOGCC Safety Valve System Test Report indicates I witnessed the testing of 11 wells and 22 components with 1 failure. The Surface Safety Valve on we1lC-20B failed to pressure test. This valve is a repeat failure from the previous test An attempt was made at this time to service the valve but the subsequent retestalso failed. This well was shut in until repairs could be completed. I departed location prior to completion of the testing on this Pad due to a required BOP test on Nabors Rig 9ES. I spoke withMerv Liddelow on the morning of 4-24-01 and he indicated there were no further failures on remainder of the wells tested. Merv liddelow performed the testing today; he demonstrated good test procedures and was a pleasure to work with. Summary: I witnessed a potion of 30-day SVS testing at BPXs C-Pad. PBU C Pad, 11 wells, 22 components. 1 failure 4.55% failure rate on the witnessed portion of the pad. Attachment: SVS PBU C Pad 4-23-01 CS X Unclassified Confidential (Unclassified if doc. removed ) SVS PBU C Pad 4-23-01 CS · ~ ¡ I Alaska Oil and Gas Conservation Commission Safety Valve System Test Report Submitted By: Chuck Scheve Date: FieldlUnitlPad: Prudhoe / PBU / C Pad Separator psi: LPS 174 HPS 4/23/01 Operator: BPX Operator Rep: Merv Liddelow AOGCC Rep: Chuck Scheve 644 S'!il';~itl.'; - ,oe,.,,'., SSJ¿ SSSV Retest. Well Type ,·..'C:',·:C' ;}--U~ ""'i',",' é',-"""" <", Well Permit Separ Set LIP Test Test Test Date Oil, WAG, GINJ, Number Number PSI PSI Trip Code Code Code Passed GAS or CYCLE C-01 1720300 C-02 1730040 C-03A 1981840 644 550 500 P P OIL C-04A 1960920 C-05 1730110 174 125 100 P P OIL C-06A 1981570 C-07 A 2000520 644 550 520 P P OIL C-08A 1950280 174 125 120 P P OIL C-09 1790260 C-10 1790350 C-11 1790460 C-12A 1981160 C-13A 1971430 C-15 1791090 C-16 1800100 C-17 A 1980230 C-18A 1991290 C-19B 2000050 644 550 525 P P OIL C-20B 2001140 174 125 110 P 4 OIL C-21 1820810 174 125 115 P P OIL C-22 1820880 644 550 550 P P OIL C-23A 1961190 C-24 1821410 644 550 525 P P OIL C-25A 1950110 644 550 475 P P OIL C-26A 1981450 C-27A 1961390 C-28 1821950 C-29A 1961700 C-30 1871360 C-31A 1950060 C-33 1930770 C-34 1880150 RJF 1/16/01 Page 1 of2 SVS PBU C Pad 4-23-01 CS · .~, , T - §~;-K~·i-JfZ"~UJ1J{iiJ¡.3~fØ::~~;1,'~:~.--'~" ~"'~'~-~~'-~ ~,.~~~~ .....~. .~...~",..\ fs;t~··_)D),ù-+ ,SSV: SSSV ,Retest Well Type, ~ ~ -/3 ..'-C .·i.·~ 'C~ .''C..,. .,..~ .~>~;~ '-"'/ - ~~~~ ~ - Well Permit Separ Set LIP Test Test Test Date Oil, WAG, GINJ, Number Number PSI PSI Trip Code Code Code Passed GAS or CYCLE C- 35A 1952000 C-36A 2000020 C-37 1930550 C-38 1860660 C-39 1930940 644 550 500 P P OIL C-41 1930990 C-42 1930500 11 Components: 22 Failures: 1 Failure Rate: 4.55% 090 Day Wells: Remarks: Surface Safety Valve on Well C-20B failed when pressure tested. Retest after valve v serviced also failed, well was shut in pending repairs. This is a partial pad test. RJF 1/16/01 Page 2 of2 SVS PBU C Pad 4-23-01 CS ~ ~ T I I g 5-- 0 II MEMORANDUM State of Alaska Alaska Oil and Gas Conservation Commission TO: t\~ . Julie ~eu.sser, ~ l.W)\ö\ DATE: Commissioner 11\ Tom Maunder, ~ P. I. Supervisor 0'-\/0'\ - 0 \ March 23, 2001 THRU: FROM: Jeff Jones, Petroleum Inspector SUBJECT: Safety Valve Tests PBF/PBU CPad March 23. 2001: I traveled to Prudhoe Bay Field to witness Safety Valve System tests on BPX's C Pad. Well house inspections were also conducted. Merv Liddelow was the BPX representative in charge of testing, and performed the tests in a professional manner. Twenty-one wells on C-Pad were tested with five failures witnessed. The SSV on well C-04A tripped below 50% of the separator psi, the SSV on well C-07A failed to hold DIP, the pilot on well C-19B was frozen, the pilot on well C-20B failed to trip and the SSV failed to hold DIP. Mr. Liddelow indicated to me that all failures were repaired within 24 hours. I inspected 21 well houses and noted leaking wing valves on wells C-03A, C-13A and C-19B. A hydraulic fluid leak on the SSV control line of well C-05 and a slight crude oil leak from the SSV on well C...25A were also noted. Mr. Liddelow indicated he would have these items corrected. The AOGCC test forms are attached for reference. SUMMARY: I witnessed the SVS tests on twenty-one oil producing wells on C Pad in the Prudhoe Bay Field. 21 wells tested 42 components, 5 failures witnessed, and 11.9°k failure rate. 21 well houses inspected. Attachments: SVS PBU C-Pad 3-23-01 JJ ~ SVS PBU C Pad 3-23-01 JJ ~ '1..... 'r- I Alaska Oil and Gas Conservation Commission Safety Valve System Test Report Operator: BPX Operator Rep: Merv Liddelow AOGCC Rep: Jeff Jones Submitted By: Jeff Jones Field/Unit/Pad: PBF /PBU/C Pad Separator psi: LPS 174 Date: 3/23/01 HPS 662 ~¡fl~lf4~····~ >"L ':~::Ç~.éèC '.L C ,:C'XC ,~$Jf: SSSV 1-- Retest·, WeltType . ":C-'::;·" ,'.- -';'''' WeD Permit Separ Set LIP Test Test Test Date Oil, WAG, GINJ, Number Number PSI PSI Trip Code Code Code Passed GAS or CYCLE C-01 1720300 C-02 1730040 662 550 525 P P OIL C-03A 1981840 662 550 530 P P OIL C-04A 1960920 662 550 220 3 P OIL C-05 1730110 174 125 115 P P OIL C-06A 1981570 662 550 580 P P OIL C-07 A 2000520 662 550 545 P 4 OIL C-08A 1950280 C-09 1790260 C-I0 1790350 C-ll 1790460 662 550 595 P P OIL C-12A 1981160 C-13A 1971430 662 550 590 P P OIL C-15 1791090 C-16 1800100 C-17 A 1980230 662 550 580 P P OIL C-18A 1991290 C-19B 2000050 662 550 250 2 P OIL C-20B 2001140 662 550 0 1 4 OIL C-21 1820810 . 174 125 120 P P OIL C-22 . 1820880 662 550 560 P P OIL C-23A 1961190 C-74. ..- 7_-~:-; 1821410 662 550 545 P P OIL 'ï;!' ~~2§Aj:~~é:~····'··· 1950110 662 550 510 P P OIL C-26A 1981450 . . C-27A 1961390 C-28 1821950 C-29A 1961700 C-30 1871360 662 550 525 P P OIL C-31A 1950060 662 550 . 560 P P OIL C-33 1930770 C-34 1880150 C-35A 1952000 174 125 120 P P OIL C-36A 2000020 174 125 115 P P OIL RJF 1/16/01 Page 1 of2 SVS PBU C Pad 3-23-01 JJ1 i{_$$fAè SSS;V ,Retest WeUType·' Well Permit Separ Set LIP Test Test Test Date Oil, WAG, GINJ, Number Number PSI PSI Trip Code Code Code Passed GAS or CYCLE C-37 1930550 662 550 550 P P OIL C-38 1860660 C-39 1930940 C-41 1930990 C-42 1930500 662 550 590 P P OIL 21 Components: 42 Failures: 5 Failure Rate: 11 . 90O/J:tI90 Day Wells: Remarks: Operator reports all failures repaired and passed retest. RJF 1/16/01 Page 2 of2 SVS PBU C Pad 3-23-01 111 - r ct ~~ THE MATERIAL UNDER THIS COVER HAS BEEN - MICROFILMED ON OR BEFORE JA~lI~RY 03, 2001 r ~ , . ... I - - -. . P L W _ _ A_om - MAT E IAL UNDER --------- TH IS MARKER C:LORl\MFILMDOC 0/\1'/\ :\C)GCC I nd '1 v 'I'd Ubi I \,I/e 1 í G e ()i () ql' C Eii Mat e r' ,]' 031 ::::; J n v e n t 0 j'" V '- Ìf) //6tJO i D /\ T A ,,,_P L tJ ~3 P ß II Sì~- I::' ,~,~ '~e ; i [) ,~) 't~ >:,.:;; 1;;:: ,/ Ui / D b PEf?HIT RUN DATE_RECVD ........ .......~. ....... '.~V ,...,.,. v.... ........ ......._ .._"" ......., .._.... "'n- ....,.._ ........ ~...._ ........ -.v.- .._.... ........ ........ ....", ....v ..,,'" .....-.. ....-. ...... ....... ........ ........ .....,. ....... ...... -....-.- -.-,-'" ........ ",...... ........ .....-.. ..-n ....-.. ....... ........ ",">V ..-.-..... 'u," ,.... '''N ....'.. '..-.- ..-, ..... '''.-' ...., ",- .." 'N. ... DGR/E\i,/r~L! J'e..{ ð ð .....r: :' "7 7f}'~ 9 028 TVD II(,ßO ~ 8 7 3 £-)j f) '~ 8 rj 1,1 0 08/07/95 95-01 'j DGR/CNP 95~0 11 08/07/9~::, R()P/DGR/CNO ~7770-9028 TVD 438Ó ~7~5--wl0382 MD O~3/07/9~) 95··011 NGP/DGR/E\,I/P4 9~>01'í oe,/O} / D~::, D5'·01i 7342 ,....:P M \,hiD - E \^/ RIG R I eN P f (, ~ ì.. ~ (IJ- '1 t 07/~?~)/9G Are dry diteh samples required? )Ie s @_¿\(Id ('eee -'f vc~,d I,' V ':~,:;: ¡-I <.1 \^I.'J~) the w e1 1 e 0 f' e d '? ve s ~):\ n a i V 51:::5 & des c (, -I' I) t 'j' 0 n 1'" e c C~ '1 V ~~ d ? /'1>~~ ,;, it+:t, - !\ r" ewe 11 t e ~5 t s ¡--, e q u 'j' t'" e d ? yes 1 hi ... 'I' _I' .' ,_, ,;' ") ~) ')'j P -, -'¡' - ¡") ,'~ ~ I. { ~ \ ':~ I.::;:¡ Ire, <. I d '-' ~;; w__.-t~ Init-j'.;:¡l ~(' r;. ~ C' ~ -;' V ~ ,j r) 1, '; , }'Yo 'v" I ",,' ( C ~~,I ............ ............ .....~ .. :-< ~~}~'" -- " n Î'/Î H F ¡\j T c: ~..~' _~_~-=-~~J . fj$~t{I~===========~'#1izf2=:== '__..___..w_____'__._'w.._.__'~ .._.., ,__,~- ~_,___=_j:1:!~&ll_J_f2J.~~_i~-,-'-m".-~mmm'" "".._·.._·,·"..·_'1_/~_'f_/~.r:_-,_,_ I sperrY-SUrJí CAILLING SeAVlc:eS ~~,¡ 75 -01 \ 1f- 73Lf-¿ WELL LOG TRANSMITIAL To: State of Alaska Alaska Oil and Gas Conservation Comm. Attn.: Howard Okland 3001 Porcupine Dr. Anchorage, Alaska 99501 RE: MWD Fonnation Evaluation Logs - C-25A AK-MW-50017 July 24, 1996 The technical data listed below is being submitted herewith. Please acknowledge receipt by returning a signed copy of this transmittal letter to the attention of rlffi Galvin, Sperry-Sun Drilling Services, 5631 Silverado Way, #G, Anchorage, AK 99518 1 LDWG fonnatted LIS tape with verification listing. RECE\VED cf~ JUL 2 5 1995 Alaska OU & Gas Cons. Commission Anchorage 5631 Silverado Way, Suite G . Anchorage. Alaska 99518 . (9.07) 563-3256 . Fax (907) 563-7252 A Dresser Industries. Inc. Comcanv ,_ _. . ,_, ''-''I "I' F.LASKl.~iL AND GAS CONSERVATION COMM/SSIOt\' REPORT O~ SUNDRY WELL OPEh. TIONS 1. Operations performed: Operation shutdown _ Stimulate _ Plugging_ Pull tubing _ Alter casing _ Repair well_ 5. Type of Well: Development L Exploratory _ Stratigraphic _ Service _ 2. Name of Operator BP Exploration (Alaska) Inc. 3. Address P. O. Box 196612, Anchorage, Alaska 99519-6612 4. Location of well at surface 1535' SNL, 1031' WEL, Sec. 19, T11N, R14E, UPM At top of productive interval 1107' NSL, 1097' EWL, Sec. 20, T11N, R14E, UPM At effective depth 830' NSL, 1268' EWL, Sec. 20, T11N, R14E, UPM At total depth 762' NSL, 1304' EWL, Sec. 20, T11N, R14E, UPM 12. Present well condition summary Total depth: measured true vertical 10471 feet BKB 9186 feet Effective depth: 10317 feet BKB 9052 feet measured true vertical Casing Structural Conductor Surface Intermediate Production Liner Perforation depth: Size Length -- 110 2642 9495 20x30 13 3/8 95/8 -- Plugs (measured) Perforate-X...- Other _ 6. Datum elevation (DF or KB) KBE = 72.06 AMSL feet 7. Unit or Property name Prudhoe Bay Unit 8. Well number C-2:f'(14-20-11-14) PBU 9. Permit number/approval number ~5-Uly¿ 7<!<r1 7-991 10. API number 50- 029-20819 11. Field/Pool Prudhoe Oil Pool Junk (measured) fill at 10317' MO (01/88) Cemented 8 c.y. 3720 c.t. 1430 c.t. Measured depth True vertical depth BKB 143 2675 8389 143 2575 9528 8181-9186 1203 7 360 c.t. 9268-10471 measured 10068'-10107' (straddle packed) 10155'-10204', 10216'-10242', 10253'-10298' (non-straddle packed) true vertical (subsea) 8766' - 8965' (four intervals) Tubing (size, grade, and measured depth) 5 112" L-80 to 9216' with 4 112" tailpipe to 10135' "- Packers and SSSV (type and measured depth) 9518" Otis packer at 9216:' r Otis WD packer at 10124'; 5 112" SSSV at 2160' 13. Stimulation or cement squeeze summary Intervals treated (measured) Treatment description including volumes used and final pressure - .'-. '. ;:./ ·¿::·L J .. . . -, . ....,..:'.;!:'I.....-.'-' '~.: F r:~ [~ ~:. : ~i'?~J !~ :.':.-:~~~~~;_ ',__::1 .--;~ :.~ .~\ ~.~,~_:-c~~;, :~'.: ''':1-:T;:0::rri' 4 . - 14. Representative Daily Average Production or Iniection Data Oil-Sbl Gas-Mef Water-Sbl Casing Pressure Tubing Pressure Prior to well operation Subsequent to operation 626 SI 13980 6 o 2451 - - - - 15. Attachments 16. Status of well classification as: Copies of Logs and Surveys run _ Daily Report of Well Operations Oil X Gas Suspended 17. I ~.:;;'2 ~:~7ifY tha,t the "/~Oing is true an.d correct to the best of my knowledge. . Signed / '//11/vl /Ý /fl ¿'¡j;/Y1.l/~ Title Technical AssIstant III Form 10-404 Rev 06/15/88 - ORIGINAL Service ;' ~> Date = /7 / '!!c. SUBMIT IN DUPLICATE WELL C-25 (14-20-11-14) _ Addperf 2/25/95 The following additional interval were perforated uSIng 2" guns, 4 SPF, low-side orientation and 0° phasing. 10033- 10036 ~D' On 1 ('1\1' ¡ f, L .1 K 1 t.J \j t~\ :...0;.>'"'--:-- ~.;.~ .. "::"~'7J FE8 . ~:....~., > r~ 4: . (.~"'t ~ :; -;.;~.:..:ú}...)· r _ . . . \... -. 1~': :"; 5pe~,..,v-sur . DRILLING SERVICES r To: WELL LOG TRANSMITTAL \ State of Alaska / f\ \ August 4, 1995 Alaska Oil and Gas Conservation Comm. ( l) Attn: Larry Grant (A' I 3001 Porcupine Drive '-" \ ') Anchorage, Alaska 99501 MWD Formation Evaluation Logs - C-25A, AK-MW-50017; AK-RB-950311 RE: The technical data listed below is being submitted herewith. Please acknowledge receipt by returning a signed copy of this of this transmittal letter to the attention of: Jim Galvin, Sperry-Sun Drilling Services, 5631 Silverado Way, #G, Anchorage, AK 99518 2" x 5" MD Resistivity and Gamma Ray Logs: 50-029-20819-01 1 Blueline 1 Rev Folded Sepia 2" x 5" TVD Resistivity and Gamma Ray Logs: 50-029-20819-01 1 Blueline 1 Rev Folded Sepia 2" x 5" MD Neutron and Gamma Ray Logs: 50-029-20819-01 1 Blueline 1 Rev Folded Sepia 2" x 5" TVD Neutron and Gamma Ray Logs: 50-029-20819-01 1 Blueline 1 Rev Folded Sepia rP~ ·r -1,~t5'1~ 4¿/,eù . ,~> I' 0;-, 1'JT@),l/,Á._,·,,>. (f r 'A ¡r.. è. . . ¿I -)~.., ¿?,Jœ '/(~),<:-. '.; . $" f.f/) "''& ~, '0~/.¡Î;' , '(1s'" '\)1;;_ 5631 Silverado Way, Suite G . Anchorage, AJaska 99518 . (9,07) 563-3256 . Fax (907) 563-7252 A Dresser Industries, Inc. Company Ii BP EXPLORATION To: Alaska Oil & Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska 99501 Attention: Commissioners Subject: Revised C-25A Permit (permit # 95-11) Date: April 13, 1995 Enclosed, in triplicate, is a revised permit for well C-25A. The bottom hole location and lease number have been corrected. Yours Sincerely, T~~ ftt- Drilling Engineer Supervisor MS cc. Well file Petrotechnical Data Center REGEIVED APR 2 4 1995 A\aska Oil ,& Gas Cons. Commission Anchora. 'ì /-r-" I STATE OF ALASKA I ALASKA OIL AND GAS CONSERVATION COMMISSION WELL COMPLETION OR RECOMP LETION REPORT AND LOG 1, Status of Well ClassifiÛn of Service Well irì OIL ŒJ GAS 0 SUSPENDED 0 ABANDONED 0 SERVICE 0 Jr/¡I, I I "', I ~ 2. Name of Operator 7. Permit Numbe't'/ / / !/<1 BP Exploration 95-11 l.r I 3. Address 8. API Number ¡" P. O. Box 196612, Anchorage, Alaska 99519-6612 50- 029-20819-01 4. Location of well at surface 9, Unit or Lease Name 1535' SNL, 1031' WEL, SEC. 19, T11N, R14E'~-"', :-,' -~,~ Prudhoe Bay Unit ~, At Top Producing Interval S¿iJ: 10. Well Number . ) 590' NSL, 116' EWL, SEC. 20, T11N, R14E __.ßL -/l~~ C-25A Æ2:F¡'... ~ ..~~~ :'l",~"¡. - 11. Field and Pool At Total Depth i'!:'i2Th Prudhoe Bay Field/Prudhoe Bay Pool 108' SNL, 434' WEL, SEC. 30, T11N, R14E ~'j";--"'~";~ 5. Elevation in feet (indicate KB, OF, etc.) 16. Lease Designation and Serial No. KBE= 72.9' ADL28310 12. Date Spudded 13. Date T.D. Reached 14, Date Comp., Susp. or Aband, 15, Water Depth, if offshore 116. No. of Completions 3/14/95 3/25/95 3/31/95 N/A feet MSL One 17. Total Depth (MD+ TVD) 18. Plug Back Depth (MD+ TVD) 19. Directional Survey 120. Depth where SSSV set 21. Thickness of Permafros t 11600'~D/9040'TVD 11515'~D/9040'TVD YESŒI f\OO 2121' feet MD 1900' (Approx.) 22. Type Electric or Other Logs Run GR/RES/NEU/~WD 23, CASING, LINER AND CEMENTING RECORD SETTING DEPTH MD CASING SIZE wr. PER FT. GRADE TOP BOTTOM HOLE SIZE CEMENTING RECORD AMOUNT PULLED 20/1 X 30/1 Insulated conductor Surface 110' 36/1 8 cu yds concrete 13-3/8" 72# L-80 Surface 2675' 17-1/2/1 3720 cu ft Arcticset" 9-5/8/1 47# L-80 Surface 8729' 12-1/4/1 1300 CU ft "G"/130 cu ft PF "C" 7/1 29# L·80 8582' 10382' 8-1/2/1 390 sx Class /IG /I 4-1/2/1 12.6# L·80 10168' 11600' 6/1 262 sx Class /IG/I 24. Perforations open to Production (MD+ TVD of Top and Bottom and 25, TUBING RECORD interval, size and number) SIZE DEPTH SET (MD) PACKER SET (MD) Gun Diameter 2-1/2/1 4spf 4-1/2", L-80 9985' 9937' ~D TVD 10710'·10825' 9097'-9034' 10875'·10975' 9035'·9035' 26. ACID, FRACTURE, CEMENT SQUEEZE, ETC. 11035'·11140' 9034'-9033' DEPTH INTERVAL (MD) AMOUNT & KIND OF MATERIAL USED 11170'-11295' 9033'-9034' 11340'·11470' 9034'·9039' 27. PRODUCTION TEST Date First Production Method of Operation (Flowing, gas lift, etc,) 4/9/95 Flowing Date of Test Hours Tested PRODUCTION FOR OIL-BBL GAS-MCF WATER-BBL CHOKE SIZE GAS-OIL RATIO TEST PERIOD Flow Tubing Casing Pressure CALCULATED OIL-BBL GAS-MCF WATER-BBL OIL GRAVITY-API (corr) Press, 24-HOUR RATE 28. CORE DATA Brief description of lithology, porosity, fractures, apparent dips, and presence of oil, gas or water. Submit core chips. RECEIVED APR 24 1995 Ala.ska Oil & Gas Cons. Commission Anchora( - "j Form 10-407 Rev. 7-1-80 Submit in duplicate CONTINUED ON REVERSE SIDE l~-- 30. GEOLOGIC MARKERS NAME MEAS. DEPTH TRUE VERT. DEPTH Subsea Sag River 9487' 8330' Shublik 9527' 8365' Sadlerochit 9615' 8441' FORMATION TESTS Include interval tested, pressure data, all fluids recovered and gravity, GOR, and time of each phase. REGEIVED APR 2 4 1995 Alaska OU .& Gas Cons. Commission Anchorac r; 31. LIST OF ATTACHMENTS 32. I hereby certify that the foregoing is true and correct to the best of my knowledge Signed L} It; /'1 V \\1 ¡ Llúj ~)M;- i \ I V Title Drilling Engineer SUDervisor i J ,¡.g .. ~ S Date ï INSTRUCTIONS General: This form is designed for submitting a complete and correct well completion report and log on all types of lands and leases in Alaska. Item 1: Classification of Service Wells: Gas injection, water injection, steam injection, air injection, salt water disposal, water supply for injection, observation, injection for in-situ combustion. Item 5: Indicate which elevation is used as reference (where not otherwise shown) for depth measurements given in other spaces on this form and in any attachments. Item 16 and 24 : If this well is completed for separate production from more than one interval (multiple completion), so state in item 16, and in item 24 show the producing intervals for only the interval reported in item 27. Submit a separate form for each additional interval to be separately produced, showing the data pertinent to such interval. Item 21: Indicate whether from ground level (GL) or other elevation (DF, KB, etc.). Item 23: Attached supplemental records for this well should show the details of any multiple stage cement- ing and the location of the cementing tool. Item 27: Method of Operation: Flowing, Gas Lift, Rod Pump, Hydraulic Pump, Submersible, Water In- jection, Gas Injection, Shut-in, Other-explain. Item 28: If no cores taken, indicate "none". Form 10-407 DAILY OPERATIONS"T _ I AAI SHARED SERVICE WELL: BOROUGH: UNIT: FIELD: LEASE: API: PERMIT: APPROVAL: PAGE: 1 C-25A NORTH SLOPE PRUDHOE BAY PRUDHOE BAY ACCEPT: 03/11/95 01:00 SPUD: RELEASE: OPERATION: DRLG RIG: DOYON 14 WO/C RIG: DOYON 14 50- 03/11/95 TD:10417 PB: 9398 03/12/95 TD:10417 PB: 9398 03/13/95 TD:10417 PB: 9398 1) KILLING WELL MW: 0.0 MOVE RIG F/C-31A T/C-25A. RU T/KILL WELL & TAKE ON 600 BBLS OF 140 DEGREE SEAWATER T/KILL THE WELL. RU DSM LUBRICATOR & PULL BPV. PRESPUD MEETING & RU CHECK LIST. RU & PUMP DOWN 9-5/8" X 5.5" ANNULUS & RECOVER DIESEL F/TBG. CIRC @550 PSI W/4 BPM, RECOVERED 42 BBLS DIESEL. RU T/PUMP DOWN TBG & RECOVER DIESEL F/ANNULUS. 2) MU 8.5 SECTION MILL ASSY MW: 0.0 CON'T T/CIRC DOWN TBG W/SEAWATER, DISCARDING ANY DIESEL- RECOVERED TOTAL OF 120 BBLS DIESEL.CHECK WELL F/FLOW & INSTALL 2 WAY CHECK. TEST T/1000. OK. ND 6" TREE & 13-5/8" X 6" ADAPTER FLANGE. NU BOP'S. TEST BOP'S & MANIFOLD T/250/5000, HYDRILL T/250/2500. RU T/PULL TBG. PULL TBG HANGER T/RIG FLOOR USING 170,000LBS PU WT. LD LANDING JT & TBG HANGER. CBU WHILE RU OTIS CL SPOOL UNIT. PULL & LD 206 JTS OF 5.5", 17# L-80 MOD-BTRS & 27' CUT OFF JT. 10 GLM'S SLIDING SLEEVE & SSSV. RD TBG TOOLS & CLEAR RIG FLOOR. SLIP & CUT DL. RU & TEST CASG T/3500. OK. GET SECTION MILL ON RIG FLOOR. 3) CUTTING WINDOW MW: 0.0 RETEST 9-5/8" CSG T/3500 PSI. OK. KILL LINE IS FROZEN. RUN WEAR BUSHING. MU SECTION MILL BHA. RIH & PU 117 JTS OF 5" DP & RUN 50 STNDS OUT OF DERRICK T/9160. 10' ABOVE 5.5" TBG CUT @9180. DISPLACE SEAWATER W/10 PPG MILLING FLUID @ 6BPM, 1300 PSI & SPOT 36 BBLS 18pPG PILL T/COVER 500' F/9180 T/8680. PULL T/8821 BY MISTAKE, 1 STND SHORT OF CUT OUT POINT OF 8729, 92'. MADE CUT OUT & 5' OF SECTION T/8826. FOUND THE MISTAKE. PULL UP T/THE CORRECT DEPTH @8729. MADE CUT OUT @8729, CORRECT DEPTH CUT SECTION T/8764, 35'. REGE\VED APR 2 4 1995 Maska OU & Gas Cons. Commission "Anchora( " -,LL C-25A OPERATION: RIG DOYON 14 l'~ I PAGE: 2 03/14/95 TD: 8779 PB: 8529 4) 03/15/95 ( 5) TD: 8 9 61' ( 8 961 ) 03/16/95 ( 6) TD: 9 5 9 4' ( 633 ) 03/17/95 ( 7) TD : 98 6 9' ( 275 ) 03/18/95 ( 8) TD: 9 957' ( 8 8 ) PULL WEAR RING MW: 0.0 CONTINUE CUTTING 9 5/8" SECTION F/ 8764 - 8779'. CIRCULATE HOLE CLEAN. RECOVERED TOTAL OF 2850# IRON AND CUTTINGS. POH. LD 4-6 1/4" DC'S AND SECTION MILL KNIVES 98% WEAR. PU 5" MULE SHOE AND RIH OPEN ENDED TO 8770'. CIRC DOWN TO 8879' PULL BACK TO 8770', REVERSE CIRC. RIH TO 8879'. BJS PUMPED 20 BBLS WATER AND TESTED LINES. PULL 10 STDS TO 7942' CIRCULATE CBU. DID NOT SQEEZE DUE TO TEMPERTURE BELOW -50 DEGREES. POH. LD 48 JOINTS 5" DP. CLEAN OUT METAL CUTTINGS FI BOPS W/ WASHING TOOL ON KELLY. PULL WEAR RING AND 9 5/8" PACKOFF, RUN NEW 9 5/8" PACK OFF AND TEST, OK. RERUN WEAR RING. CLEAR FLOOR. DRILLING MW: 0.0 VIS: 0 Mlu STEERABLE BHA #1, 1.25 DEGREE BH MOTOR ORIENT, INSTALL PROBE, FILL PIPE EVERY 1000', SHALLOW TEST MWD, OK. WASH AND REAM F/ 8450'. TAG CEMENT @ 8489'. C/O FIRM CEMENT TO 8734'. ORIENT DYNA DRILL TO 135 DEGREES RIGHT OF HIGH SIDE OF HOLE TIME DRILL OUT OF 9 5/8" SECTION, PASS 9 5/8" STUB. DIRECTIONAL DRILL 8.5" HOLE F/ 8779 - 8961' DROPPING ANGLE AND TURNING RIGHT. POH FOR DRLG ASSY MW: 0.0 VIS: 0 CONTINUE DIRECTIONAL DRILL 8 1/2" HOLE F/ 8961 - 9594'. DROP ANGLE AND TURN RIGHT. CBU. FLOW CHECK. PUMP DRY JOB AND POH. ROTARY DRLG 8.5" HOLE MW: 0.0 VIS: 0 CONTINUE TO POH FOR BRA CHANGE, LID MOTOR AND LDC, M/U BHA #2 ON 8.5" BIT #2, SPERRY SUN RLL, INSTALL MWD PROBE. INITIALIZED SPERRY SUN RLL TOOL, INSTALL SOURSE. RIH TO 4815'. SLIP AND CUT DRILLING LINE 59.5'. CONTINUE RIH TO 9546'. WASH AND LOGGING DOWN. DRILL 8.5" HOLE W/ ROTARY ASSY F/ 9594 - 9869'. POH TO SHOE MWD DN MW: 0.0 VIS: 0 CONTINUE DRILLING 8.5" HOLE W/ ROTARY ASSY F/ 9869 - 9930'. CBU. POH. FLOW CHECK AT SHOE AND DRY JOB, REMOVE SOURCE AND DOWN LOAD RLL, L/D STABS, MWD COLLAR. MU BHA #3, CHANGE OUT MWD - LWD SYSTEM, LOAD SOURCE AND ORIENT 2 DEGREE BH MOTOR, PU BUMPER SUB, LD 2 JOINTS 5" HWDP WASHED OUT. RIH. FILL PIPE @ 2513', 5745 & 7890' TEST MWD @ 8852'. PU KELLY WASH AND REAM 48' F/ 9882 - 9930'. DIRECTIONAL DRILL 8 1/2" HOLE F/ 9930 - 9944' SLIDE. CIRC SPERRY SUN COMPUTERS DOWN CHANGE BOARDS IN UNIT. DRILL F/ 9944 - 9957' ROTATE COMPUTERS WENT DOWN AGAIN SPERRY SUN. POH TO SHOE @ 8729', WHILE SPERRY SUN CHANGES OUT COMPUTERS. .....,LL C-25A OPERATION: RIG DOYON 14 PAGE: 3 03/19/95 ( 9) TD : 1 0 0 15' ( 5 8 ) 03/20/95 ( 10) TD : 1 0 3 63' ( 3 4 8 ) 03/21/95 ( 11) TD : 1 0 3 8 2' ( 1 9 ) 03/22/95 ( 12) TD : 1 0 3 82' ( 0 ) 03/23/95 ( 13) TD : 1 0 3 8 2' ( 0 ) RIH W/ BRA #4 MW: 0.0 VIS: 0 CONTINUE CIRCULATING @ 9 5/8" CSG SHOE @ 8729' WHILE SPERRY SUN CHANGES OUT COMPUTERS, CHECK MWD-LWD, WORKING OK. RIH TO 9957'. DIRECTIONAL DRILL 8.5" HOLE F/ 9957 - 10015'. RAVING TROUBLE SLIDING HIGH TORQUE, HIGH DRAG. JUST NOT ACTING RIGHT FROM THE START OF BIT RUN. PULL DUE TO PRo CIRCULATE HOLE CLEAN. FLOW CHECK PULL TO SHOE. CONTINUE POH. REMOVE SOURCE AND DOWN LOAD SPERRY SUN RLL. CHANGE BIT, ADJUST MOTOR TO 1.75 DEGREE, ORIENT TOOL, INSTALL SOURCE, RIH W/ BRA #4. DRILLING MW: 0.0 VIS: 0 RUN MAD PASS F/ 9895 - 9935'. P/U KELLY TAKE CHECK SHOT @ 9954'. DIRECTIONAL DRLG 8.5" HOLE F/ 10015 - 10363'. REAM 8. 5" HOLE MW: O. 0 VI S : 0 CONTINUE DIRECTIONAL DRILLING 8.5" HOLE F/ 10363 - 10382'. TROUBLE SLIDING APPEARS BIT GOING OUT GAUGE. CIRCULATE SAMPLE 10380' UP. CHECK FOR FLOW. POH TO SHOE CHECK FOR FLOW, CONTINUE POH. CHANGE OUT RLL TOOL, ORIENT AND STAND BACK. PULL WEAR RING, TEST BOPS AND MANIFOLD, HYDRIL. SET WEAR RING. M/U BIT ON MOTOR RECEIVED ORDERS TO RUN CSG. SLIP AND CUT DRLG LINE 59.5'. L/D BHA #4 NM HWT, BUMPER SUB AND 15 JTS DP. M/U 8.5" HOLE OPENER BHA AND RIH TO 9848'. REAM 85" HOLE F/ 9848 - 10282'. POOH W/LINER RUN TOOL MW: O. 0 VI S : 0 CON'T T/REAM 8.5" HOLE F/10282 T/10382 TD. CBU. DROP RABBIT 2" ODe POOH & STAND BACK 93 STANDS OF 5" DP. LD 5" HWDP & REAMINING ASSY. SLM OK--NO CORRECTION. RU T/RUN 7" LINER. RUN 43 JTS OF 7" 29# HT-80S NSCC CSG, W/TIW 9-5/8" X 7" HANGER, LINER TOP PKR, 7" TIE-BACK SLEEVE, HOWCO FLOAT EQUIP. SHOE @ 10382, FLOAT @ 10339, TIW PLUG CATCHER @ 10297, TIW LINER HANGER @8595, TIW PACKER @8590 & TIE-BACK SLEEVE @ 8581. RIH ON 5" DP. CBU 7BPM @1500PSI. WHILE HOWCO BATCHED 15.7PPG NEAT CMT. TESTED LINES T/4500PSI. PIPE STUCK ON BTTM @10382. PUMP CMT & DISPLACE. CIP @ 03:25 ON 3/22/95. SET 7" LINER HNGER & LINER TOP PCKR. 4500 PSI. OK. REVERSE CIRC OUT 35 BBLS OF CMT. POOH. DRLG CEMENT MW: 0.0 VIS: 0 POH W/ TIW HANGER RUNNING TOOL. PICK UP AND MAKE UP 6" BIT. 1 1/4 DEG MU MOTOR - LC-MWD-RLL AND ORIENT TEST RLL TOOL, NO COMMUNICATION W/ COMPUTER, CHANG EOUT RLL TOOL AND TEST SAME, PICK UP BUMPER JARS, NMHWDP JARS, HWDP AND 3.5" DP AND TIH. SHALLOW TEST MWD, WOULD NOT TEST. POH TO CHECK MWD. CHANGE OUT MWD PROBE AND RIH 2 STANDS AND TEST SAME, OK. RIH W/ NEW DRLG ASSY AND TAG CEMENT @ 10294'. CBU, BE SURE OF NO GREEN CEMENT BEFORE CSG TEST. TEST CSG AND LINER LAP, OK. DRLG PLUGS AND CEMENT @ 10294'. REGE IVED APR 2 4 1995 Alaska Oil & Gas Cons. Commission Anchorac' .óLL C-25A OPERATION: RIG DOYON 14 PAGE: 4 03/24/95 ( 14) TD : 1 0 63 6' ( 2 5 4 ) 03/25/95 ( 15) TD : 115 69' ( 933 ) 03/26/95 ( 16) TD: 11600' ( 31 ) 03/27/95 ( 17) TD : 11600' ( 0 ) DRILLING MW: O. 0 VI S : 0 DRILL OUT LANDING COLLAR-FLOAT COLLAR-SHOE & 10' NEW HOLE F/10292 T/10392. PUMP 38 BBLS. HI VIS SWEEP & DISPLACE HOLE W/9.0# FLO-PRO MUD. RECYCLE PUMPS & WORK PIPE IN AN ATTEMPT T/PUMP UP TOOL FACE & SURVEY. MWD FAILED. 10 MIN. FLOW CHECK & POOH T/CHECK DIRECTIONAL TOOLS. CHANGE OUT JARS--PACKING OUT OF SAME--CHANGE MWD PROBE & CHECK RLL, BULK HEAD COIL CORD HAD CONNECTION STARTING T/SEPARTE CAUSING LOSS OF COMMUNICATION T/DIRECTIONAL PROBE. RIH T/7856. SLIP & CUT DRLG LINE. RIH T/10382 & LOG T/10392. DRILLING & SURVEYS F/10392 T/10636. DRILLING MW: O. 0 VI S : 0 DRILLING & SURVEYS F/10636 T/11569. OPEN HOLE & MAD PASS MW : O. 0 VI S : 0 DRILLING & SURVEYS F/11569 T/11600. TD. CBU. 10 MIN FLOW CHECK. LD 35 JTS, 10-MIN, FLOW CHECK. POOH. LD BHA. PU NEW BHA. RIH W/HO ASSY. POOH T/PU RLL TOOL. LOAD 2-7/8" PAC IN PIPE SHED. F/PLUG BACK, DECISION WAS MADE T/OPEN HOLE & RUN THE 4.5" LINER. PU RLL TOOL. RIH W/HOLE OPENER. REAM & MAD PASS HOLE F/10382 T/10889. RIH W/4.5" LINER MW: O. 0 VI S : 0 OPEN HOLE & MAD PASS W/RLL TOOL F/10889 T/11600. CIRC HOLE CLEAN, 10-MIN. FLOW CHECK. POOH T/SHOE. DISPLACE HOLE T/SEAWATER F/SHOE T/SURFACE. POOH & LD BHA, DOWNLOAD RLL TOOL. PRE-JOB SFTY MEETING. RU & RUN 34 JTS OF 4.5" 12.6# L-80 NSCT LINER W/TIW HANGER & PACKER (5" X 7"). CIRC CAPACITY OF LINER. RIH W/4.5" LINER. FILL DP EVERY 10 STANDS. ,.c;LL C-25A OPERATION: RIG DOYON 14 PAGE: 5 03/28/95 ( 18) TD:11600 PB:11516 03/29/95 ( 19) TD:11600 PB:11516 03/30/95 ( 20) TD:11600 PB:11515 CIRC OUT CMT MW: 0.0 CIRC COMPLETE PIPE VOLUME @ SHOE. RIH W/4.5" LINER THRU OPEN HOLE & LAND @ 11600. RU TIW CMT HEAD, CIRC & WORK PIPE WHILE WAITING ON WATER & VAC TRUCKS. PACKING OFF OCCASIONALLY WHILE CIRC. MOVE PIPE EVERY 20 MINS. PIPE FREE. PUMP 5 BBLS OF H20. TEST LINES T/3500. PUMP 15 BBLS WATER, FOLLOWED W/40 BBLS 15.7# CMT CLASS "G" @ 5 BBLS PER MIN. DROP PLUG & PUMP CMT. PRESS UP @ 1613 SPM F/1800 T/2900#. WORK PIPE & PRESS DROP T/2200. CALCULATED STROKES F/WIPER PLUG PU WAS 1581, BUT APPEARED T/BE PLUGGING OFF @ PACKER. WORK PIPE & FREE UP. DID NOT BUMP PLUG. RELEASE F/HANGER & SET PACKER. REVERSE OUT 29 BBLS CMT. POOH W/RUNNING TOOL. DP WIPER PLUG WAS IN CMT HEAD & LINER WIPER PLUG ON THE BTTM OF THE RUNNING TOOL. MU 2-7/8" BHA & PU 46 JTS OF 2-7/8" PAC DP & RIH. SLIP & CUT DL. RIH & BREAK CIRC @ TOP OF 7" LINER @ 8581 AND @ THE TOP OF THE 4.5" LINER @ 10168. TAKE WT. @ 10188. CLEAN OUT F/10188 T/10333. CMT LOOKS T/BE PARI TALLY GREEN. CIRC HOLE & WORK PIPE T/ELIMINATE STICKING. RIH W/SEAL ASSY. MW: 0.0 DRILL CEMENT F/10333 T/10450. TEST 4.5" LINER LAP T/1000#. BLED OFF 200# IN 2 MIN. DRILL & WASH CEMENT STRINGERS F/10450 T/11515 & CIRC OUT. DROP BALL T/OPEN CIRC SUB. PUMP 30 BBLS SPACER & DISPLACE DIRTY SEAWATER W/CLEAN SEAWATER. PULL T/4.5" LINER TOP @10168. KELLY UP & WASH THRU LINER LAP @10168 T/CLEAN CMT OUT F/SEAL ASSY T/TEST LAP. 10-MIN FLOW CHECK. POOH & LD 25 JTS OF 2-7/8" DP & BHA. TEST BOPE 250/5000#. MU TIW 5.25 SEAL ASSY & RIH W/SAME. LD 2-7/8" DP. MW: 0.0 FINISH RIH W/5.25" TIW SEAL ASSY & HOOK UP CIRC HEAD. BREAK CIRC & STING INTO 4.5" LINER TOP @10168. PRESS UP ON ANNULUS & TEST T/3500#/30MIN. OK. 7 BBLS T/PRESS UP. 10-MIN FLOW CHECK & POOH W/SEAL ASSY. LD SEAL ASSY. PU WESTERN ATLAS PERF GUNS, 2.5" & 2-7/8" DP. JARS, FAS FILL VALVE, STAB, SAFETY JOINT & PACKER. RIH W/PERF GUNS. RU & SHOOT FLUID LEVEL @ 1600' & PERFORATE. GUNS FIRED. GOOD BLOW. OPEN BY-PASS VALVE ON CHAMP PACKER. PERF F/10011 T/11470. REVERSE CIRC. COMPLETE HOLE VOL. NO GAS OR OIL. RELEASE PACKER & RIG DOWN, HOWCO TEST LINES & 10-MIN FLOW CHECK. STAND 50 STANDS IN DERRICK(SLM) LD 3.5" & 5" DP. LD PACKER, JARS, FASFILL VALVE, SAFETY JOINT & STAB. RU POWER TONGS & LD 2-7/8" DP. R'EGEIVED APR 2 4 1995 A\aska OU & Gas Cons. Commission Anchoral ., .~LL C-25A OPERATION: RIG DOYON 14 .......-""~......." PAGE: 6 03/31/95 ( 21) TD:11600 PB:11515 04/01/95 ( 22) TD:11600 PB:11515 SIGNATURE: NU THE TREE ASSY MW: 0.0 FINISH LD 2-7/8" DP & PERFORATING GUNS. (ALL SHOTS FIRED). HOLD SAFETY MEETING. RU & RUN 236 JOINTS OF 4.5", 12.6# L-80 NSCT TBG. W/3 GLM, PACKER, XN & X NIPPLES AND BALL VALVE. --PULL THE WEAR RING PRIOR T/RUNNING TBG. TEST CONTROL LINE & LAND TBG. PUMP CORROSION INHIBITER DOWN THE ANNULUS @ 3 BPM. DROP BALL & SET PACKER. TEST T/4000#/30 MIN. TEST ANNULUS T/3500/30 MIN. BLEED OFF PRESSURE. SET BACK PRESSURE VALVE & NO BOPE. NU & TEST TREE T/5000. RIG RELEASED TEST TREE T/5000#. RD. RU T/ANNULUS & 9-5/8" ANNULUS. RU VALVE & SECURE THE HRS. ON 3/31/95. MW: 0.0 RU LUBRICATOR & PULL 2-WAY CHECK VALVE. PUMP 150 BBLS OF DIESEL DOWN 4.5" X LINES & U-TUBE DIESEL. SET BACK PRESSURE TREE & CELLAR. RELEASE THE RIG @ 12:00 DATE: (drilling superintendent) ~, SPERRY-SUN DRILLING SERVICES PAGE 1 ANCHORAGE ALASKA SHARED SERVICES DRILLING DATE OF SURVEY: 032595 PBU/C-25A MWD SURVEY 500292081901 JOB NUMBER: AK-MW-50017 NORTH SLOPE BOROUGH KELLY BUSHING ELEV. = 72.90 FT. COMPUTATION DATE: 3/31/95 OPERATOR: BP EXPLORATION TRUE SUB-SEA COURS COURSE k"/'i{DLS TOTAL MEASD VERTICAL VERTICAL INCLN DIRECTION RECTANGULAR COORDINATES VERT. DEPTH DEPTH DEPTH DG MN DEGREES DG/100 NORTH/SOUTH EAST/WEST SECT. 8700 7749.40 7676.50 42 49 S 33.50 E .00 2106.00S 1801.00E 2408.57 8729 7770.72 7697.82 42 32 S 33.40 E .99 2122.40S 1811.84E 2426.72 8731 7772.19 7699.29 42 31 S 33.30 E 3.57 2123.53S 1812.58E 2427.97 8926 7924.56 7851.66 35 50 S 8.80 E 8.57 2236.11S 1857.93E 2547.09 8957 7949.65 7876.75 35 7 S 7.80 E 2.98 2253.80S 1860.51E 2564.96 8988 7975.47 7902.57 33 42 S 3.20 E 9.48 2271.40S 1862.22E 2582.56 9019 8001.10 7928.20 33 7 S 1.40 E 3.74 2288.29S 1862.90E 2599.27 9050 8026.98 7954.08 32 47 S 1.10 E 1.16 2305.07S 1863.26E 2615.82 9082 8054.42 7981.52 32 37 8 .90 E .64 2322.698 1863.57E 2633.18 9116 8082.78 8009.88 32 37 8 .80 E .17 2340.848 1863.84E 2651.05 9146 8107.97 8035.07 31 58 S .80 W 3.60 2356.778 1863.84E 2666.69 9177 8134.28 8061.38 30 46 S 4.70 W 7.65 2372.788 1863.08E 2682.27 9207 8160.85 8087.95 30 20 8 7.10 W 4.20 2388.39S 1861.47E 2697.29 9239 8188.48 8115.58 30 10 8 8.50 W 2.27 2404.358 1859.29E 2712.56 9271 8215.71 8142.81 29 51 8 12.20 W 5.97 2419.828 1856.46E 2727.21 9302 8242.84 8169.94 29 42 8 14.20 W 3.22 2434.938 1852.92E 2741.38 9332 8268.70 8195.80 29 23 8 16.00 W 3.15 2449.098 1849.10E 2754.56 9363 8295.86 8222.96 29 23 8 21.40 W 8.50 2463.578 1844.20E 2767.85 9394 8322.96 8250.06 29 42 S 23.50 W 3.46 2477.768 1838.33E 2780.68 9426 8350.38 8277.48 29 12 8 25.50 W 3.50 2491.858 1831.92E 2793.30 9456 8377.16 8304.26 29 12 8 30.60 W 8.11 2505.048 1824.89E 2804.93 9488 8404.83 8331.93 29 12 8 32.40 W 2.77 2518.238 1816.81E 2816.35 9519 8432.06 8359.16 30 12 8 38.20 W 9.70 2530.888 1807.83E 2827.07 9560 8467.33 8394.43 30 17 8 41.90 W 4.57 2546.628 1794.60E 2840.02 9588 8491.63 8418.73 30 23 8 43.80 W 3.43 2557.058 1784.93E 2848.44 9620 8518.60 8445.70 30 42 8 44.10 W 1.08 2568.518 1773.88E 2857.60 9650 8544.96 8472.06 31 6 8 44.60 W 1.55 2579.798 1762.85E 2866.59 9682 8572.06 8499.16 31 42 8 44.20 W 2.00 2591.608 1751.28E 2876.01 9713 8598.55 8525.65 32 1 8 44.30 W 1.04 2603.408 1739.79E 2885.42 9744 8624.69 8551.79 32 30 8 44.20 W 1.56 2615.228 1728.28E 2894.84 9776 8651.13 8578.23 33 0 8 44.20 W 1.59 2627.418 1716.42E 2904.57 9807 8677.44 8604.54 33 35 8 43.80 W 2.03 2639.848 1704.42E 2914.51 9838 8703.02 8630.12 34 0 8 43.60 W 1.35 2652.228 1692.59E 2924.44 9869 8728.42 8655.52 34 17 8 43.10 W 1.34 2664.758 1680.76E 2934.50 9899 8753.91 8681.00 34 12 8 43.10 W .33 2677.428 1668.90E 2944.70 tj,:;~(·;.;; :,i C·' ~~)O'· f'lMf~.. 'R'E€E1V'eD .-IU it J !c !c APR 24 1995 Date [, (~.. Of AtaskaOU&GaSCø~~,f¡I AodIarl' ~ SPERRY-SUN DRILLING SERVICES ' PAGE 2 ANCHORAGE ALASKA SHARED SERVICES DRILLING DATE OF SURVEY: 032595 PBU/C-2SA MWD SURVEY 500292081901 JOB NUMBER: AK-MW-SOO17 NORTH SLOPE BOROUGH KELLY BUSHING ELEV. = 72.90 FT. COMPUTATION DATE: 3/31/95 OPERATOR: BP EXPLORATION TRUE SUB-SEA COURS COURSE DLS TOTAL MEASD VERTICAL VERTICAL INCLN DIRECTION RECTANGULAR COORDINATES VERT. DEPTH DEPTH DEPTH DG MN DEGREES DG/100 NORTH/SOUTH EAST/WEST SECT. 9925 8775.39 8702.49 34 1 S 43.03 W .67 2688.05S 1658.97E 2953.26 9950 8795.66 8722.76 33 31 S 47.66 W 10.76 2697.58S 1649.33E 2960.79 9989 8827.59 8754.69 36 12 S 50.70 W 8.20 2712.10S 1632.49E 2971.86 10018 8851.03 8778.13 39 30 S 49.31 W 11.52 2723.81S 1618.55E 2980.73 10050 8874.86 8801.96 43 46 S 48.03 W 13.65 2737.81S 1602.64E 2991.47 10082 8896.74 8823.84 48 39 S 47.88 W 15.43 2753.11S 1585.68E 3003.28 10114 8916.54 8843.64 53 41 S 47.94 W 15.92 2769.60S 1567.42E 3016.02 10146 8934.71 8861.81 57 19 S 47.43 W 11.39 2787.40S 1547.87E 3029.81 10174 8950.07 8877.17 58 18 S 47.81 W 3.61 2803.858 1529.84E 3042.55 10207 8966.40 8893.50 61 30 8 48.80 W 10.17 2822.598 1508.80E 3056.98 10239 8980.73 8907.83 64 55 8 49.28 W 10.80 2841.208 1487.36E 3071.20 10270 8993.14 8920.24 67 58 8 50.02 W 10.06 2859.638 1465.67E 3085.19 10301 9003.58 8930.68 72 20 8 48.45 W 15.03 2878.528 1443.76E 3099.59 10365 9019.45 8946.55 79 1 8 48.30 W 10.40 2919.848 1397.26E 3131.38 10396 9025.07 8952.17 80 24 8 48.20 W 4.36 2940.478 1374.15E 3147.26 10428 9030.12 8957.22 81 22 8 48.10 W 3.09 2961.498 1350.68E 3163.47 10458 9034.29 8961.39 82 26 8 48.20 W 3.63 2981.078 1328.82E 3178.56 10489 9037.79 8964.89 84 41 8 47.80 W 7.30 3001.898 1305.70E 3194.63 10521 9039.97 8967.07 87 19 8 46.70 W 9.07 3023.098 1282.77E 3211.11 10551 9040.67 8967.76 90 5 8 46.60 W 9.03 3044.228 1260.38E 3227.63 10582 9040.50 8967.60 90 30 8 45.90 W 2.59 3065.748 1237.90E 3244.51 10614 9040.23 8967.33 90 29 8 45.30 W 1.91 3087.778 1215.41E 3261.89 10645 9039.74 8966.84 91 18 8 45.50 W 2.65 3109.908 1192.96E 3279.38 10677 9038.64 8965.74 92 41 8 45.40 W 4.46 3131.968 1170.56E 3296.80 10708 9037.07 8964.17 93 5 8 46.00 W 2.31 3153.668 1148.31E 3313.91 10738 9035.62 8962.72 92 26 8 45.80 W 2.30 3174.488 1126.83E 3330.29 10769 9034.57 8961.67 91 24 8 45.30 W 3.69 3196.378 1104.52E 3347.56 10800 9034.17 8961.27 90 5 8 43.20 W 8.09 3218.218 1083.24E 3364.99 10833 9034.43 8961.53 89 0 8 44.50 W 5.20 3241.838 1060.55E 3383.89 10863 9035.04 8962.14 88 41 8 44.20 W 1.38 3263.738 1039.15E 3401.34 10896 9035.67 8962.77 89 8 8 42.00 W 6.74 3288.028 1016.41E 3420.90 10925 9035.88 8962.98 90 1 8 40.00 W 7.64 3309.648 997.62E 3438.58 10956 9035.68 8962.78 90 42 8 40.30 W 2.38 3333.548 977.46E 3458.23 10987 9035.25 8962.35 90 52 8 39.80 W 1.71 3356.988 957.76E 3477.52 11019 9034.63 8961.73 91 23 8 38.70 W 3.84 3381.518 937.72E 3497.82 ~., r- SPERRY-SUN DRILLING SERVICES I ANCHORAGE ALASKA SHARED SERVICES DRILLING PBU/C-25A 500292081901 NORTH SLOPE BOROUGH COMPUTATION DATE: 3/31/95 TRUE SUB-SEA MEASD VERTICAL VERTICAL DEPTH DEPTH DEPTH 11049 11080 11112 11141 11172 11204 11235 11266 11297 11329 11360 11392 11424 11454 11485 11517 11547 11601 9033.94 9033.45 9033.12 9032.84 9032.82 9033.26 9033.82 9034.13 9034.01 9033.85 9034.03 9034.80 9036.46 9038.34 9039.59 9039.87 9039.87 9039.57 8961.04 8960.55 8960.22 8959.94 8959.92 8960.36 8960.92 8961.22 8961.11 8960.95 8961.13 8961.90 8963.56 8965.44 8966.6~ 8966.97 8966.97 8966.67 COURS INCLN DG MN 91 11 90 35 90 35 90 30 89 35 88 48 89 7 89 43 90 41 89 52 89 26 87 45 86 22 86 22 89 5 89 52 90 7 90 31 PAGE 3 DATE OF SURVEY: 032595 MWD SURVEY JOB NUMBER: AK-MW-50017 KELLY BUSHING ELEV. = 72.90 FT. OPERATOR: BP EXPLORATION COURSE DLS TOTAL DIRECTION RECTANGULAR COORDINATES DEGREES DG/100 NORTH/SOUTH EAST/WEST S 38.50 W 8 38.70 W 8 38.50 W 8 37.90 W 8 37.00 W 8 36.40 W 8 35.00 W 8 34.70 W 8 34.80 W 8 34.80 W 8 33.30 W 8 33.90 W 8 33.70 W 8 33.30 W 8 34.50 W 8 35.20 W 8 36.20 W 8 37.94 W .90 2.05 .63 2.08 4.07 3.13 4.68 2.15 3.09 2.60 5.02 5.70 4.29 1.34 9.39 3.30 3.38 3.37 3405.42S 3429.52S 3454.148 3477.10S 3501.918 3527.50S 3552.448 3577.728 3603.958 3629.858 3655.678 3681.858 3708.618 3733.428 3759.668 3785.708 3810.378 3852.708 THE CALCULATION PROCEDURE8 ARE BA8ED ON THE U8E OF THREE-DIMEN8ION MINIMUM CURVATURE METHOD. HORIZONTAL DISPLACEMENT = 3898.72 FEET AT SOUTH 8 DEG. 48 MIN. EA8T AT MD = 11601 VERTICAL SECTION RELATIVE TO WELL HEAD VERTICAL 8ECTION COMPUTED ALONG 169.10 DEG. TIE IN POINT 8700' WINDOW POINT 8729' INTERPOLATED DEPTH 11601' 918.62E 899.39E 879.74E 861.67E 842.66E 823.59E 805.66E 788.07E 769.87E 751.87E 734.42E 717.02E 699.11E 682.69E 665.06E 646.93E 629.20E 597.21E VERT. 8ECT. 3517.69 3537.72 3558.17 3577.30 3598.08 3619.60 3640.70 3662.19 3684.51 3706.54 3728.59 3751.01 3773.90 3795.16 3817.59 3839.73 3860.60 3896.13 SPERRY-SUN DRILLING SERVICES ANCHORAGE ALASKA PAGE 4 SHARED SERVICES DRILLING PBU/C-25A 500292081901 NORTH SLOPE BOROUGH COMPUTATION DATE: 3/31/95 DATE OF SURVEY: 032595 JOB NUMBER: AK-MW-50017 KELLY BUSHING ELEV. = 72.90 FT. OPERATOR: BP EXPLORATION INTERPOLATED VALUES FOR EVEN 1000 FEET OF MEASURED DEPTH TRUE SUB-SEA TOTAL MEASD VERTICAL VERTICAL RECTANGULAR COORDINATES MD-TVD VERTICAL DEPTH DEPTH DEPTH NORTH/SOUTH EAST/WEST DIFFERENCE CORRECTION 8700 7749.40 7676.50 2106.00 S 1801.00 E 950.60 9700 8586.83 8513.93 2598.15 S 1744.91 E 1113.17 162.57 10700 9037.53 8964.63 3147.73 S 1154.46 E 1662.47 549.30 11601 9039.57 8966.67 3852.70 S 597.21 E 2561.43 898.96 THE CALCULATION PROCEDURES ARE BASED ON THE USE OF THREE-DIMENSION MINIMUM CURVATURE METHOD. T>< ~¿ERRY-SUN DRILLING SERVICES I ANCHORAGE ALASKA SHARED SERVICES DRILLING PBU/C-25A 500292081901 NORTH SLOPE BOROUGH COMPUTATION DATE: 3/31/95 PAGE 5 DATE OF SURVEY: 032595 JOB NUMBER: AK-MW-50017 KELLY BUSHING ELEV. = 72.90 FT. OPERATOR: BP EXPLORATION INTERPOLATED VALUES FOR EVEN 100 FEET OF SUB-SEA DEPTH TRUE SUB-SEA MEASD VERTICAL VERTICAL DEPTH DEPTH DEPTH 8700 8731 8862 8985 9104 9221 9337 9451 9567 9683 9802 9922 10048 10221 11601 7749.40 7772.90 7872.90 7972.90 8072.90 8172.90 8272.90 8372.90 8472.90 8572.90 8672.90 8772.90 8872.90 8972.90 9039.57 TOTAL RECTANGULAR COORDINATES MD-TVD VERTICAL NORTH/SOUTH EAST/WEST DIFFERENCE CORRECTION 7676.50 7700.00 7800.00 7900.00 8000.00 8100.00 8200.00 8300.00 8400.00 8500.00 8600.00 8700.00 8800.00 8900.00. 8966.67 2106.00 S 2124.07 S 2198.81 S 2269.67 S 2334.51 S 2395.38 S 2451.35 S 2502.98 S 2549.02 S 2591.98 S 2637.67 S 2686.80 S 2736.69 S 2830.75 S 3852.70 S 1801.00 E 1812.89 E 1849.08 E 1862.08 E 1863.75 E 1860.58 E 1848.41 E 1826.07 E 1792.41 E 1750.92 E 1706.51 E 1660.10 E 1603.91 E 1499.44 E 597.21 E 950.60 959.04 989.24 1012.60 8.44 30.20 23.36 1031.80 1048.97 1064.25 1079.04 1094.24 19.20 17.17 15.28 14.79 15.20 1110.72 1129.30 1150.00 1175.30 1248.63 16.48 18.58 20.70 25.30 73.34 2561.43 1312.80 THE CALCULATION PROCEDURES USE A LINEAR INTERPOLATION BETWEEN THE NEAREST 20 FOOT MD (FROM MINIMUM CURVATURE) POINTS R EGEIVED APR 24 1995 Alaska OU & Gas Cons. Commission Anchan.. '1 Hr'r< Ið'( ''::I:::' 1ðC::: 44r'M :::iHHi"'<I:...LJ :::i1:...i"'<V ,lLI:...:::i LJi"'<lLLll'i~ ~. "P. . TO: . . FROM: . .. NOTES: BP EXPLORATION BP Exploration (Alaska) Inc. P.O. Box 196612 Anchorage, Alaska 99519·8612 . TELECOPY Name: _ ï. .l. ARCO Alaska,' Inc. ~-... ~". Company: Location: ~ Name & Ext.: Department ê.- 2·S-ft j;~v4I?~ ( 2~, PAGES TO FOLLOW ~ Fax # --1uthr IJ¿b~-~ð~r / I r: If o/a 1", d/ca.../, Q""-.. . RECEIVED 1 () '1°9k f\ P R ,'. i J, i) . s\OO , . G' 0 Gons Cmnffi\S (Do not include cover ~fi\Wt~11 & a.. . 'Anchorage SECURITY CLASSIFICATION PRIVATE SECRET ... CONFIDENTIAL I>... ~ SATELLITE FAX MACHINE FAX# 907 564-5193 CQNFIRM# 907 564.. H~~ ~~ '95 0Z:45PM SHRRED SERVICES DRILLING SUBJECT BASED ON ENGINEeR P.3 S6 4 -~,-£05"'" SklJQ- BP EXPLORATION _NOINEERING DATA SHEET NO._ OF_ BUDGET/AF~ NO. FILE NO. DEPT. APP'VL DATE 8Jt?/\-) íh~ doJ/o?77 ,1c;k J,éla)br, I;; erV1')neouJ ,fDYì C~?5A /era:/I. f f sAt7tt/ofl kf.,/t! rea/ S~C ¡;~Yl /9 bW) øt2Ø /J?~~ keel ~/y(' /Y~1Jð' tûe ~fro wa,n/!¿;( £' ck//I ~rJA~r aile! r7¿u>-5hol ~ rei//~('oý/' uJÁ~~;; WQS Clf!(()wJ ~u I W1rkr~[r;ajgl1 ~e .5'ec.,.hòr; eo l1umJt?y n'rYlClIj¿.pJ. the JJseJ nuntJer5 J;ow¡ .f'(ooj~Þl )J?P5' are £&177 ð(?(Jibn .YO 1'7c.J eo. J/e.re /:; !he cCHJ'eoJ~ð ;:J-rYì j J -1h,¿~ tk j~ {See /ljkle~ Kj 5",rJot.:e ~ð ' . ~¡, ,I> ~ ¿IV.:', . ~J /Jpj ..." llòr;!ili'l ... '~,I RECE\VED s 04 0 1 Q C) \;, f: ? R \. ¡',j J ''¿ , " .,\' ~f)\\ì\' "., "'D\1ì\I'\~ Alaska OU & Gas Lons. v - Anchorage .~ è "::'" I 4 6'ÐfYVI ab(f7Ul iJe_£e~.s... ¿'4",tl¿c'1 f)/ ~, e e 1~¿(r AKISI7·11319'1 ðfJde '~/or¡cPø/ ~y- ¿¡}a¡-..:Jb~b;? . . <::::;¿'II~.S¿,,/k- STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION WELL COMPLETION OR RECOMP LETION REPORT AND L 1. Status of Well Classification of SQrvlce Well OILŒI GAS L] SUSPENDeD J:J ABANDONED [j SERVICE 0 2. Name of Operitor 7. ~ermil Number BP ExDloratÎOn 95-11 3. Address 8. A~I Number P. O. Sox 198612. Anchoraae, Alaska 99519-8812 50- 029-20819-01 4. Location of well at surface 9. Unit or Lease Name 4tJ?, 2~3JO 15361 SNL¡ 1081' WEL, SEG. 19, T11N, R14~ Prudhoe Bay Unit At Top ~rodCJcing Interval 10. Well Number ~ ".> ," -!-"¿~ :'~:; :.'. C-25A --~~ 11. Field and Pool At Total CJeptn ,:(.";.j:::~~~'. " " . ~" 106'SNL, 434' WEL, SEC. 30, T/1N, R14E ";':' )" Prudhoe Bay rield/Prudho~ Bay Pool 5. Elevation In fett (IndIcate KB, DF. am.) .~i'~' , slgnatlon ai'ld Séria¡ No. ....... 1n!I~ e 72.9' ~ '~"""'f ADL 28305 H~, ....9 . T.e. R¡ij~ed 114, Data ccmp" SLlSp. or Aband. r 5. Weter Depth, 11 OftShOfl;i 11e. NO. or completions 3/14195 3I2S19S ~ 11~~.~-~el~T4':~:: .. '1 N/A feet MSL. One 17. Total lJeptn (MD+ NO) 18. Plug Sack Depth (MO+TVO) 19. DlfSOtiOnal SJ,lrvIi!Y 120. Depth wnere SSSV sat ~1. ThickneSS of ~ermafrolii t 11800' MDI904O' TVD 11515' MD/9040' TVD 'fES[i f\OO i 2121'feet MC 1900' (ADDfOX,) 22, ~ eleCtric or other Loç s Aun . ~ ~~ :~p,:='~'~.::: ;' 23. CASING, LINER AND CEMENTING REQOAO SETTING D~ MD CASING SIZE 'I{j, PER rr. GfIAOE TOP aoTTOM HOLE SIZE C!MENT1NG FiEcæD mOUNT PULLED 2011 x 30" Insulated oonductor Surface 110' 38/1 8 cu 'Ids concrete 13-318" 72# L-BO Sufface 2675' 17-1/211 3720 CIJ ft ArcticsBt 1/ 9ø6/811 47# I.-SO Suffice 87291 12-1/4" 1300 ÇIJ ft -(3"/130 CIJ ft I'F ~ç~ r 29# L-80 8582' 10382' 8-1/2" ¡ 390 $X Class "G" 4-1/2" 12.6# L-80 10168' 11600' 6" 24. Perforations open to ProductIon (MD+ TVD of Top and Bottom and 25, 'ruBING AeCORD ....- inteIVal, aì.2e and numbat) S!ZE I OEPTH SET (Me;,) PACKER SET (MD) Gun Diameter 2-11211 4 spf 4-112", L-BO I 9985' 9937' MD TVD i 10710'-10825' 9097'-9034' 10875'..10975' 9036'-90351 26, ACID. FRACTURE. CEM~ Iõ:T'f'\ IJ...... 't""', 11035'-11140' 9034'-9033' DePTH INTERVAL (MD) AMOU~& klt~ b~· ...... ~ II,~ I.IStD 11170'..11296' 9OS3'..9034' - .. 11340'-11470' 9034'-9039' ! ~ ~ .u,,^'" 1-\ \' 1\ !U ¡':J ,jlJ- ~",...if\n ~7. P~UCT10N TEST ð,aSK~ ,UU .& bas I.JUfl~. ~... ~ '¡. .!"'~",...,..... Date First ProduotíOI1 MImOd of QpJ.rªu~~~",v.;lo.wi,,~. ,O~sïTIT.-~\o,) , ..,....'.. 'tJ ....... ,.- :.~.? " ._. .. ,_ ~.~.f .. .... .' !. Cite of Test Hours Teated ØAOOUOTlON FOR OIL·BeL GAS·MGF IW:l\TER-8SL CHOKE SIZE GAS-OIL tlAT!O reST FEPlIOO (jAS·HCr- ..,....,IWt.\TER-SBL Flow Tubing Casing ~ressure CAlCULATeO OIL-Sel. OIL CiAAVITY·API (eorr) Press, 24·HOUR RArE I 28. 2"d COR~U¡J~I~a'S3JI^~3S a3~t:lHS WdÞÞ:20 S6, ¿0 ~dt:l- - - ---- . OG m BP EXPLORATION To: Alaska Oil & Gas Conservation Commission 3001 Porcupine Drive Anchorage, Alaska 99501 Attention: Commissioners Subject: Revised C-25A Permit (permit # 95-11) "î I Date: March 27, 1995 Enclosed, in triplicate, is a revised permit for well C-25A. The bottom hole location has been changed. Yours Sincerely, !~ð:: Drilling Engineer Supervisor MS cc. Well file Petrotechnical Data Center RECEIVED MAR 2 8 1995 A\aska OU & Gas Cons. Commission AnchoTa r-, ~-=- ,,,\~\ 1.... ",:1 I~'i c·;~] r~ t\Ll ij ii" It If "..... ! ¡II \ \ ! C "::J '\ "I L· II .' '"1 ¡)! / ,'~, '. I ¡ ì! t. :.'../ u I i U l ¡ L~.:1 ( i } -;!~:J !"~'.'\\' n, " (j}A. r. -(Ù ~~ (ß^ ¡ ¡ ! ,.:-1 "¡i',f r\' \ U· fj' . Ii:! \ J~ ~i) \ ! ! I í " , I ' . __', \, \ ! i U L1 L'=:J L1 Q \~ j U ¡ I / I I TONY KNOWLES, GOVERNOR i ALASKA OIL AND GAS I CONSERVATION COMMISSION / 3001 PORCUPINE DRIVE ANCHORAGE, ALASKA 99501-3192 PHONE: (907) 279-1433 FAX: (907) 276-7542 March 29, 1995 Terry Jordan Drilling Enginer Supervisor BP Exploration (Alaska), Inc. POBox 1966 I 2 Anchorage, AK 99519-66 I 2 Re: Prudhoe Bay Unit C-25A Revised BP Exploration Permit No. 95- I I Sur Loc ] 535'SNL, 103] 'WEL, Sec. 19, Tl IN, RI4E, UM Btmhole Loc ~'SNL, ~'WEL, Sec.10, TIIN, RI4E, UM t§¥r 40.8' tiJ'f Dear Jordan: Enclosed is the approved revised application for permit to drill the above referenced well. The provisions of the original approved permit dated February 16, 1995 are in effect for this revision. David W. Johns on Chairman BY ORDER OF THE COMMISSION dlf/Enclosures cc: Department ofFish & Game, Habitat Section Wlo encl Department of Environmental Conservation wlo encl 1 a. Type of work Drill 0 Red ri 1I1XI11 b. Type of well. Expl 0 rato ry D Stratigraphic Test D Development Oil [XI Re-Entry D Deepen 0 Service D Development Gas D Single Zone D Multiple Zone D 2. Name of Operator 5. Datum Elevation (DF or KB) 10. Field and Pool BP Exoloration KBE = 72.9 feet Prudhoe Bay Field/Prudhoe 3. Address 6. Property Designation Bay Pool P. O. Box 196612 Anchoraae Alaska 99519-6612 ADL 28310 4. Location of well at surface 7. Unit or property Name 11. Type BOnd(see 20 AAC 25.025) 1535' SNL, 1031' WEL, SEC. 19, T11N, R14E Prudhoe Bay Unit At top of productive interval 8. Well number Number 4690' SNL, 116' EWL, SEC. 20, T11N, R14E C-25A (41-30-11-14) 2S 100302630-277 At total depth 9. Approximate spud date Amount 108' SNL, 434' WEL, SEC. 30, T11N, R14E 3/14/95 $200,000.00 12. Distance to nearest 13. Distance to nearest well ~ 4. Number of acres in property 1 5. Proposed depth (MD and TVD) property line No close approach feet 11600' MD/9040' TVD feet ADL 28305-108' feet 2560 16. To be completed for deviated wells 17. Anticipated pressure (see 20 AAC 25.035 (e)(2)) Kickoff depth 8700 feet Maximum hole angle 9 0 o Maximum surface 3330 psig At total depth (TVD) 8800' / 4390 psig 18. Casing program Specifications Setting Depth size Top Bottom Quantity of cement Hole Casing Weight Grade Coupling Length MD TVD MD TVD (include stage data) 8-1/2" 7" 29# L-80 NSCC 1801' 8582' 7657' 10382' 9034' 390 sx Class "G" 6" 4-1/2" 12.6# L-80 NSCT 1368' 10168' 8077' 11600' 9040' 262 sx Class "G" r\..rrl\/~f"'\ 19. To be completed for Redrill, Re-entry, and Deepen Operations. KI:\:.I:IVLV Present well condition summary Total depth: measured 10471 feet Plugs (measured) APR 2 4 1995 true vertical 9186 feet Effective depth: measured 10310 feet Junk (measured) A\aska ,on ,& Gas Cons. Commission true vertical 9046 feet Anchora, ~ Casing Length Size Cemented Measured depth True Vertical depth Structural Conductor 110' 20" x 30" 8 cu yds concrete 143' 143' Surface 2642' 13-3/8" 3720 cu ft AS /I 2675' 2675' Intermediate 9495' 9-5/8" 1300 cu ft "G" & 9528' 8389' Production 130 cu ft PF "C" Liner 1203' 7" 360 cu ft "G" 9268'-10471' 8181'-9186' Perforation depth: measured 10270'-10313' (Open) 10068'-10107', 10155'-10204~ 10216'-10242', 10253'-10270' (Squeezed) true vertical 8939'-8977' (Subsea) 20. Attachments Filing fee IX] Property plat D BOP Sketch D Diverter Sketch D Drilling program ~ Drilling fluid program IX] Time vs depth plot D Refraction analysis D Seabed report D 20 AAC 25.050 requirementsD 21. I ,herebY certify t~at\:el foregoing is true and correct to the best of my knowledge Date~,(Rt1 ) Signed 1:~ 1 nA~{¿." Title Drillinq En,qineerSupervisor I '-J Commission Use Only Permit C ~.~~ J J ~~I_(J3qe~JO~;9 -0 I IA~ro~aJ te _ Cj~ See cover letter for other requirements Conditidns of approval Samples required D Yes ~ No Mud log required D Ves ~ No Hydrogen sulfide measures 0 Ves ~ No Directional survey required ~ Ves ONo Required working pressure for BOPE D 2M; D3M; ~5M; 010M; 015M; Other: . d B by order of A d b ùnginal Slgne y Datal ."~~...~ ,-=.... pprove y n~"irl 'M .. . Commissioner me commission Þ Form 10-401 Rev. 12-1-85 STATE OF ALASKA r REVISED ALASKA OIL AND GAS CONSERVATION COMMISSION PERMIT TO DRILL 20 AAC 25.005 Submit In tnpllcate r I Well Name: I C-25A Revision Redrill Plan Summary Type of Redrill (producer or injector): PRODUCER Surface 15361 FNL & 1031' FEL Sec. 19 T11N R14E Location: Target Location: 44751 FNL & 49471 FEL Sec. 20 T11 N R14E Bottom Hole 52431 FNL & 3451 FEL See 20 T11 N R14E Location: IAFE Number: 4P0653 I Rig: I DOYON RIG #14 I Estimated Start Date: I Operating days to complete: 13/11/95 120 I MD: 111600 I Well Design (conventional, slimhole, etc.): I TVD: 19034 I KBE: 174 I HORIZONTAL SIDETRACK R E C E 'V E D MAR 28 \995 I Objective: I SADLEROCHIT A\i;1~l\ci Oii&'::h~f:S~ Commission ABNORMAL PRESSURE Special design NONE. NO ABNORMAL PRESSURE ANTICIPATED. considerations RESERVOIR PRESSURE HIGHLY CONSISTENT IN IICII PAD AREA AT 3500 PSI Mud Program: An 10.0-10.2 ppg mud will be used. Special design f\O\JE considerations C-31 A Redrill Plan Summary Page 1 '"T Depth Densi PV YP INT 1 OM IN FL OIL SOLID (TV D) ty (CP) (#/FT GEL GEL cc/30 (0/0) S (PPG) ) min (0/0) KOPI 10.0 10 15 5 10 5 0 5 to to to to to to to to to 10442 10.2 18 30 15 30 7 0 10 Depth Densi PV YP INT 10MIN FL OIL SOLID (TVD) ty (CP) ( #/FT GEL GEL cc/30 (0/0) S (PPG) ) min (0/0) 10442 9.0 10 45 5 10 5 0 5 to to to to to to to to to 11 322 9.1 15 50 15 30 7 0 10 Directional: 1 KOP: 18700 I Maximum Hole 90° Angle: Close Approach ~ Well: The above listed wells will be secured during the close approach. RECEIVED MAR 2 8 1995 A\aska OH & Gas Cons. Commission Anchora ' c IT b- p aSln ~J U Ing rogram: Hole Csgl WtlFt Grade Conn Length Top 8tm Size Tba O.D. MDITVD MDITVD 8.511 711 29.0 L-80 nscc 1801 8581/7637 1 0382/9021 611 41/211 12.6 L-80 nsct 1368 1 0232/9000 11 600/9034 C-31 A Redrill Plan Summary Page 2 r- I Cement Calculations: Liner 711 29#, L-80,NSCC Size: Basis: 500/0 open hole excess, 80' shoe joint, 150' liner lap (9 5/811), and 200' excess above liner top. Total Cement 82Bbl 393.5sxs of Class G Blend @ 1.17 ft3/sx Volume: s Liner 4 1/211,12.6#, L-80, NSCT Size: Basis: 500/0 open hole excess, 80' shoe joint, 150' liner lap and 200' excess above liner top. Total Cement 40.8 263.7 Sx of Class IIGII Blend @ 1.17 ft3/sx Volume: Bbls Well Control: Well control equipment consisting of 5000 psi W.P. pipe rams, blind rams, and annular preventer will be installed and is capable of handling maximum potential surface pressures. R E ( E I V E D Diverter, BOPE and mud fluid system schematics on file with AOGCC. MAR 2 8 1995 Hazards and Contingencies µ,ibska Oil & Gas Cons. CommIssion Anchora ' A 60' fault may be encountered while drilling through the lower Kingak and a possible fault in the 2C zone may also be present. Neither are expected to cause problems but monitor well for losses when drilling through these areas. Mud weights should be kept to a minimum while drilling through the horizontal section (±9.0 ppg) to prevent differential sticking. With 9.0 ppg the hydrostatic is 4227 psi which well over the formation pressure. C-31 A Redrill Plan Summary Page 3 SUMMARY PROCEDURE 1 . 2. 3. 4. 5. 6. 7. 8. 9. 10. 12. 13. 14. 15. 16. 17. 18. 19. 20 21. 22. 23. 24. 25. 26. 27. 28. 29. ~ì' I Pre-rig work. Bullhead down well to ensure that it is dead. Verify that sliding sleeve at 100501 is open and jet cut tubing at first full joint above the OTIS packer @ ±91801, The packer is at 92301. Circulate well over to seawater. Freeze protect well with diesel to 20001 and set a BPV. Move in drilling rig. Pull BPV. Circulate diesel freeze protection cap from well and recover for future use. Install a BPV and tree test plug. Remove the production tree. Install BOP's and test to 5000 psi. Remove the test plug and BPV. Pull and lay down the 5 1/211. 17#. L-80. AB/MOD BUTT tubing. PU a 9 5/811,47# EZSV and RIH on 511 DP, set EZSV at 91501. Establish an injection rate and pump enough cement to cover all the perfs. POOH PU 9 5/811 section mill and RIH Displace well to FLO-PRO/milling fluid. Cut a 501 section in the 9 5/811 casing starting from about ±8700'-8750IMD. POOH Run in with a 6 3/411 steerable drilling assembly and a 8 1/211 bit with gamma ray/directional MWD. Contact AOGCC to witness tag of cement for abandonment purposes. Dress the cement to 51 below the section top. Kickoff and if necessary displace well to clean FLO-PRO system. Continue to directionally drill to the 711 casing point at ±104421 at 90.2° (see attached directional plan). Make a conditioning trip with an 8 1/211 hole-opener for the open hole section and with a 9- 5/811 casing scraper spaced to clean the casing. Install a T'. 29#. L-80. STL SOLID liner with 711 X 9-5/811 packer/hanger. Space packer / hanger to be set at ±85501 md. Cement the liner in place with the total cement volume based upon 50 % open-hole enlargement plus the 80' shoe volume, 9-5/8 X 7" lap volume, and 1501 excess on top of the liner with drillpipe in the hole. Re-test BOPls as needed. PU 3 1/211 drill pipe and 4 3/4" steerable drilling assembly with gama ray and directional MWD. RIH and cleanout liner to landing collar, test casing to 3500 psi. Drill out shoe and continue to drill horizontally to 11600' MDTD. Install a 4 1/211,12.6#,L-80,NSCT liner with 4 1/211 X TI hanger/packer. The liner hanger is to be at ±1 0292'. Cement the liner in place with the total cement volume based upon 500/0 open-hole enlargement plus the 801 shoe volume, 4 1/211X711 lap volume and 150' excess on top of the liner with 3 1/211 drill pipe in the hole. Clean out cement to landing collar. RIH with drillpipe conveyed perforating assembly and perforate the well. POOH LDDP. Run the 4-1/211 L-80 completion string assembly using as much 4-1/211 used tubing and jewelry as possible. Space out and circulate with corrosion inhibitor. Install a BPV and test plug. Remove BOPls. Install and test the production tree to 5000 psi. Pull tree test plug and BPV. Set packer. Test the tubing x casing annulus to 3500 psi for 30 minutes. Shear RP valve in the upper GLM and freeze protect the well. Set a BPV. Release rig. Complete appropriate documentation and hand-over to Production. 11 . C-31 A Redrill Plan Summary RE(EIVED MAR 2 8 1995 A\aska Oil & Gas Cons. Commission Anchorc' f Page 4 ServicL State Plane: C-Pad Drilling Zone4 BPX-Shared Alaska PBU WOA: C-25ARig C-25ARig VERTICAL VIEW SCALE 100 ft. / DMSION TVD REF: WELLHEAD VERTICAL SECTION REF: WELLHEAD 7500 7600 7700 7722 41.82' e 8601 MD 7770 7772 7800 LCU -Top K¡ng~k - TJE 42.82' e 8701 MD 42.54' e 8729 MD ~op of window 42.52' e 8731 MD window survey 7900 8000 8039 35.80' e 8926 MD 35.10' e 8957 MD 33.70' e 8989 MD 33 . 1 0' e 9019 MD 32.80' e 9050 MD 32.60' e 9083 MD 32.60' e 9116 MD 32.00' e 9146 MD 30.80' e 9177 MD 30.30' e 9208 MD 0.20' e 9240 MD 9.90' e 9271 MD .70' e 9303 MD .40' e 9332 MD 2 .40' e 9364 MD 2 70' e 9395 MD 29,~0' e 9426 MD 29. 0' e 9457 MD 29. 'e 9489 MD 30.2 ' e 9520 MD 2615 8100 8115 2659 8200 8241 2724 8300 HALLIBURTON ~4~g B~se 8447 8500 8523 ~60~ 6~~e 8788 8800 2802 RECEIVED Kíng~k - S~g River 2805 MAR 2 8 1995 2829 TSAD I Ivísh~k - Zone A\aska Oil & Gas Cons. Commission Anchorc ' 2855 2886 2915 8900 8953 8973 9000 2995 2300 2400 2500 2600 2700 VERTICAL SECTION PLANE: 169.30 2800 2900 3000 3100 3200 3300 3400 n n n I I I I'\) I'\) I'\) U1 U1 U1 J> J> ~ ;u n ""0 - 0 W !D , , ro n <+ ro Q.. VERTICAL VIEW SCALE 50 ft. / DMSION TVD REF: WET.T JfEþ.D VERTICAL SECTION REF: WELLHEAD 8950 8973 61.51' e 10208 MD d~~~~~ ~~0240 MD 67,97' e 10270 MD derruns 21N 79.03' ê 10365 82.45' e 9000 9003 89 . 1 0' e 1 089 e 10677 MD MD C-25Al.'p3 90.60' e 11081 MD MD 9050 9100 89.72' e 11266 MD C-25ARig 86.35' e 11423 MD 3000 3050 3100 3150 3200 3250 VERTICAL SECTION PLANE: 169.30 3350 3400 3450 3500 3550 3600 3650 3700 3750 3800 n o ì , ro n <+ Da~ ro Q.. Designed by : j)a.W"f<'6' ~-roJt 220J 200 ,æ::::D 3600 MAR 2 8 1995 Å\€;¡.ska Oil & Gas Cons. Commission Anchorr " RECEIVED 3400 32CD 18CD çpO; r!f 9J (j HORIZONTAL VIEW <TRUE NORTH) SCALE 200 ft. / DIVISION SURVEY REF: WELLHEAD @ HALLIBURTON BPX - ShQr ed Ser vi ces ,- '1 ¡ lli n 9 AlQSKQ StQ te PlQn e: Zon e4 PBU : WDA: C -PQa C -25ARi 9 C -25ARi 9 3/27/95 11:47 0.1"'1 r·· WELL PERMIT CHECKLIST ADMINISTRATION FIELD & POOL t: 7'0/ ,(0 INIT CLASS (J1""..l./ /-~(/ WELL NAME /:/Jr I ~,- 2- sA GEOL AREA ?9 Ò UNIT# 7Þ~ ENGINEERING APPR DATE (}5. ~: J./2ßI9S- -- GEOLOGY ,¿ ~;/~ HOWljo. A:\FORMS\chekJist rev 03194 COMPANY é! fJ 1. 2. 3. 4. 5. 6. , 7. 8. 9. 10. 11. 12. 13. ¡ Permit fee attached.. - . Y W .Jt.- ---¿ ./ .... Lease number appropriate. . .. Y N ;r;: 11 "- ::> /..J ~ Unique well name and number.. . . .@) N /'" J) Well located in a defined pool. . . . . . . . . . . . . {f) N k j'~.r<!:'" ~ Well located proper distance from drlg unit boundary. . ~ N ~ /~ . Well located proper distance from other wells. .. . Z!lJ N !5!...~d~ '£0...( Sufficient acreage available in drilling unit. . . .~G) N -/ I _ / / / If deviated, is wellbore plat included . -. ,y N 'éJs;- 0./ ';lJ1/1. J,ð /OCL;,-tJ~-;n Operator only affected party. . . . . . . . N LI Oper~tor has appropriate bond in force. .. . œ N Permit can be issued without conservation order.. ..(YJ N Permit can be issued without administrative approval. . 2]3 N Can permit be approved before 15-day wait.. ~ N 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. Conductor string provided .. .. . jJy N Surface casing protects all known USDWs. .Y N CMT vol adequate to circulate on conductor & surf csg. . Y N CMT vol adequate to tie-in long string to surf csg . . . Y N CMT will cover all known productive horizons. . . . . . Y N Casing designs adequate for C, T, B & permafrost. ~ N Adequate tankage or reserve pit. . tf) N If a re-drill, has a 10-403 for abndnmnt been approved. (i) N Adequate wellbore separation proposed. Y N If diverter required, is it adequate.. .Y N Drilling fluid program schematic & equip list adequate.(!) N BOPEs adequate . . cY N BOPE press rating adequate; test to 5000 psig. ø N Choke manifold complies w/API RP-53 (May 84). ~ N Work will occur without operation shutdown. . ~ N Is presence of H2S gas probable ~ N ,Vi:} ~;¡j 30. 31- 32. 33. 34. Permit can be issued w/o hydrogen sulfide measures. Data presented on potential overpressure zones Seismic analysis 9f shallow gas zones. Seabed condition survey (if off-shore) Contact name/phone for weekly progress reports [exploratory only] . }{:y N . Y 'v7 . Y N g~þ, . . Y N ./: Y N GEOLOGY: ENGINEERING: BEW rØ~~ ?/2.B JDH~~ :~o: RAD Comments/Instructions: - RP~ - ... ~,.--¡ TAB ¡ 7~'-' /~/ò /rJ/J /j Þ2~ k~~ -b c:¡ ¿J~/r~/I s~/~~ / ~AJ ~ç- ~Æ~k}-~ ,,;t--1~~ <C(y?ß.r,-).x.. ~S"ðd ~ SÆ... ;//) //, J) <:A. )j7L, Oil. ) i;r=.. S;"~"H:> .s;"er7; ð n . REMARKS - /.-#'....G \" PROGRAM: exp 0 dev)Sl redrll;ø serv 0 //~n ON/OFF SHORE d.....v ð~ t:J o z o t-3 ~ :::0 H t-3 t;tj H z t-3 ::I1 H en en ~ ::x>- C) t;tj ~,\.'''. [::11.] .fÃ\ rU-J ~ rQ) J I.Tt\ U: Ú ----~ . f-....~.'.'.., ' ì ¡ - ! . ¡--~ -11.1 IJ . ~~ I~I /r¡.:~ ((µ n.~ % ¡ ¡ \ \ I L\ '"', I ¡ I .-.\ -" \ f\ Lr\1 ~)~:1 LJ-t.l~!) J ~ Ir { f / / / TONY KNOWLES, GOVERNOR ALASKA OIL AND GAS CONSERVATION COMMISSION February 16, 1995 3001 PORCUPINE DRIVE ANCHORAGE, ALASKA 99501-3192 PHONE: (907) 279-1433 FAX: (907) 276-7542 Terry Jordan, Drlg Engr Supv BP Exploration (Alaska) Inc POBox 196612 Anchorage, AK 99519-6612 Re: Well # Company Permit # Surf Loc Btmhole loc Dear Mr Jordan: Prudhoe Bay Unit C-25A BP Exploration (Alaska) Inc 95-11 1535'SNL, 1031'WEL, Sec 19, T11N, R14E, UM 4439'SNL, 4072'WEL, Sec20, T11N, R14E, UM Enclosed is the approved application for permit to drill the above referenced well. The permit to drill does not exempt you from obtaining additional permits required by law from other governmental agencies, and does not authorize conducting drilling operations until all other required permitting determinations are made. Blowout prevention equipment (BOP E) must be tested in accordance with 20 AAC 25.035. Sufficient notice (approximately 24 hours) of the BOPE test performed before drilling below the surface casing shoe must be given so that a representative of the Commission may witness the test. Notice may be given by contacting the Commission petroleum field inspector on the North Slope pager at 659-3607. BY ORDER OF THE COMMISSION jo/encl c: Dept of Fish & Game, Habitat Section - wlo enel Dept of Environmental Conservation - wlo enel STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION PERMIT TO DRILL 20 AAC 25.005 ~¿¿jJ~J}\(~:- t 1 a. Type of work Drill 0 Red ri II ~ 11 b. Type of well. Explo rata ry D Stratigraphic Test D Devefopment Oil IX] Re-Entry D Deepen D Service D Development Gas D Single Zone D Multiple Zone D 2. Name of Operator 5. Datum Elevation (DF or KB) 10. Field and Pool BP 8mloration KBE = 74' feet Prudhoe Bay Field/Prudhoe 3. Address 6. Property Designation Bay Pool P. O. Box 196612 Anchoraae Alaska 99519-6612 ADL 28305 4. Location of well at surface 7. Unit or property Name 11. Type Bond(see 20 AAC 25.025) 1535' SNL, 1031' WEL, SEC. 19, T11N, R14E Prudhoe Bay Unit At top of productive interval 8. Well number Number 4502' SNL, 5029' WEL, SEC. 20, T11N, R14E C-25A (14-20-11-14) 2S 1 00302630-277 At total depth 9. Approximate spud date Amount 4439' SNL, 4072' WEL, SEC. 20, T11N, R14E 2/23/95 $200,000.00 12. Distance to nearest 13. Distance to nearest well 4. Number of acres in property 15. Proposed depth (MD and TVD) property line No close approach feet 11322' MD/9034' TVD feet ADL 28310-841' feet 2560 16. To be completed for deviated wells 17. Anticipated pressure (see 20 AAC 25.035 (e)(2» Kickoff depth 8 700 feet Maximum hole angle 9 0 o Maximum surface 3330 psig At total depth (TV D) 8800' / 4390 psig 18. Casing program Specifications Setting Depth size Top Bottom Quantity of cement Hole Casing Weight Grade Coupling Length MD TVD MD TVD (include stage data) 8-1/2" 7" 29# L-80 NSCC 1892' 8550' 7637' 10442' 9034' 393 sx Class "G" 6" 4-1/2" 12.6# L-80 NSCT 1030' 10292' 9000' 11322' 9034' 153 sx Class "G" - 11_- fì1=( rlVtU ~ .. - 19. To be completed for Redrill, Re-entry, and Deepen Operations. fES -:) 1995 Present well condition summary Total depth: measured 10471 feet Plugs (measured) r\ksKd. Uil & Gas Cons. Cornmi~ s true vertical 9186 feet Anchor: ... Effective depth: measured 10310 feet Junk (measured) true vertical 9046 feet Casing Length Size Cemented Measured depth True Vertical depth Structu ral Conductor 110' 20" x 30" 8 cu yds concrete 143' 143' Surface 2642' 13-3/8" 3720 cu ft AS " 2675' 2675' Intermediate 9495' 9-5/8" 1300 cu ft "G" & 9528' 8389' Production 130 cu ft PF "C" Liner 1203' 7" 360 cu ft "G" 9268'-10471' 8181'-9186' Perforation depth: measured 10270'-10313' (Open) 10068'-10107', 10155'-10204', 10216'-10242: 10253'-10270' (Squeezed) true vertical 8939'-8977' (Subsea) 20. Attachments Filing fee IX] Property plat D BOP Sketch D Diverter Sketch D Drilling program ŒI Drilling fluid program IX] Time vs depth plot D Refraction analysis D Seabed reportD 20 AAC 25.050 reauirementsD 21. I hereby certif%that th~]~ing is true and correct to the best of my knowledge Signed 1dJ.w 1 / 'r~ Title Drillin,q En.qineer Supervisor Date l-2-'iS U Commission Use Only Permit Number IAPI number APprova dajl lsee cover letter 9S-// 50- 02-9- 2.ð~/?-c/ 0;2.. '1(0 qS- for other requirements Conditions of approval Samples required DYes ~No Mud log required DYesß No Hydrogen sulfide measures DYes .ß1No Directional survey required ~ Yes ONo Required working pressure for B8n~ ~§Mh <pgM; ~M; D10M; D15M; Other: I . na Ig e y by order of Date ~(fJjq,<)f- Approved by David \^I. Johnston Commissioner tne commission Form 10-401 Rev. 12-1-85 Submit in triplicate ion r I Well Name: I C-25A Redrill Plan Summary Type of Redrill (producer or injector): PRODUCER Surface 1 536' FNL & 1031' FEL Sec. 1 9 Tl 1 N R 1 4E Location: Target Location: 4502' FNL & 5029' FEL Sec. 20 Tl 1 N Rl 4E Bottom Hole 4439' FNL & 4072' FEL See 20 Tl 1 N Rl 4E Location: IAFE Number: I Estimated Start . Date: I Rig: I DOYON RIG #1 4 12/23/95 I Operating days to complete: I MD: I 11322 I I TVD: I 9034 120 I KBE: I 74 Well Design (conventional, slimhole, etc.): HORIZONTAL SIDETRACK I Objective: I SADLEROCHIT ABNORMAL PRESSURE Special design NONE. NO ABNORMAL PRESSURE ANTICIPATED. considerations RESERVOIR PRESSURE HIGHLY CONSISTENT IN "C" PAD AREA AT 3500 PSI Mud Program: An 1 0.0- 1 0.2 mud will be used. Special design NONE considerations rED -- 3 '\ 3 9 ~~! C-31 A Redrill Plan Summary pJB,ska Oil & Gas Cons. Cornmìssion Anchor;. ,-. Page 1 r-' Depth Densi PV YP INT , OMIN FL OIL SOLID (TVD) ty (CP) (#/FT GEL GEL cc/30 (%) S (PPG) ) min (%) KOP' 10.0 10 15 5 10 5 0 5 to to to to to to to to to 1 0442 10.2 18 30 15 30 7 0 10 Depth Densi PV YP INT , OM IN FL OIL SOLID (TVD) ty (CP) (#/FT GEL GEL cc/30 (%) S (PPG) ) min (%) 1 0442 9.0 10 45 5 10 5 0 5 to to to to to to to to to 11322 9.1 15 50 15 30 7 0 10 Directional: I KOP: I 8700 I Maximum Hole 90° Angle: Close Approach NONE Well: The above listed wells will be secured during the close approach. c IT b" p aSlng U Ing rogram: Hole Csg/ Wt/Ft Grade Conn Length Top Btm Size Tbg O. D. MD/TVD MD/TVD 8.5" 7" 29.0 L-80 nscc 1892 8550/7637 10442/9034 6" 4 1/2" 1 2.6 L-80 nsct 1030 10292/9000 11322/9034 lit rtl\¡J:r, ~'= L "" b ¡ V L.. y FE E3 ~'3 199 b C-31 A Redrill Plan Summary þ,ì8.S!<a Oil & Gas Cons, Commission Anchort .-. Page 2 ~ Cement Calculations: Liner 7" 29#, L-80,NSCC Size: Basis: 50% open hole excess, 80' shoe joint, 1 50' liner lap (9 5/8"), and 200' excess above liner top. Total Cement 82Bbl 393.5sxs of Class G Blend @ 1.17 ft3/sx Volume: s Liner 4 1/2", 12.6#, L-80, NSCT Size: Basis: 50% open hole excess, 80' shoe joint, 1 50' liner lap and 200' excess above liner top. Total Cement 31.8 1 52.8 Sx of Class "G" Blend @ 1.17 ft3/sx Volume: Bbls Well Control: Well control equipment consisting of 5000 psi W.P. pipe rams, blind rams, and annular preventer will be installed and is capable of handling maximum potential surface pressures. Diverter, BOPE and mud fluid system schematics on file with AOGCC. Hazards and Contingencies A 60' fault may be encountered while drilling through the lower Kingak and a possible fault in the 2C zone may also be present. Neither are expected to cause problems but monitor well for losses when drilling through these areas. Mud weights should be kept to a minimum while drilling through the horizontal section (±9.0 ppg) to prevent differential sticking. With 9.0 ppg the hydrostatic is 4227 psi which well over the formation pressure. RECEIVED r- r BI, -"" lqnS . .. j v.... 'J" ;\ \?SiŒ on 8¡ Gas GOT/s. Commission Anchor~ C-31 A Redrill Plan Summary Page 3 SUMMARY PROCEDURE ;1. Pre-rig work. Bullhead down well to ensure that it is dead. Verify that sliding sleeve at í 10050' is open and jet cut tubing at first full joint above the OTIS packer @ ±9180'. The packer is at 9230'. Circulate well over to seawater. Freeze protect well with diesel to 2000' and set a BPV. Move in drilling rig. Pull BPV. Circulate diesel freeze protection cap from well and recover for future use. Install a BPV and tree test plug. Remove the production tree. Install BOP's and test to 5000 psi. Remove the test plug and BPV. Pull and lay down the 5 1/2". 17#. L-80. AB/MOD BUTT tubing. PU a 9 5/8",47# EZSV and RIH on 5" DP, set EZSV at 9150'. Establish an injection rate and pump enough cement to cover all the perfs. POOH PU 9 5/8" section mill and RIH Displace well to FLO-PRO/milling fluid. Cut a SO' section in the 9 5/8" casing starting from about ±8700'-8750'MD. POOH 1 1. Run in with a 6 3/4" steerable drilling assembly and a 8 1/2" bit with gamma ray/directional MWD. Contact AOGCC to witness tag of cement for abandonment purposes. Dress the cement to 5' below the section top. Kickoff and if necessary displace well to clean FLO-PRO system. Continue to directionally drill to the 7" casing point at ± 10442' at 90.2° (see attached directional plan). Make a conditioning trip with an 8 1/2" hole-opener for the open hole section and with a 9- 5/8" casing scraper spaced to clean the casing. Install a 7". 29#. L-80. STL SOLID liner with 7" X 9-5/8" packer/hanger. Space packer / hanger to be set at ±8550' md. Cement the liner in place with the total cement volume based upon 50 % open-hole enlargement plus the 80' shoe volume, 9-5/8 X 7" lap volume, and 150' excess on top of the liner with drillpipe in the hole. Re-test BOP's as needed. PU 3 1/2" drill pipe and 4 3/4" steerable drilling assembly with gama ray and directional MWD. RIH and cleanout liner to landing collar, test casing to 3500 psi. Drill out shoe and continue to drill horizontally to 11322' MDTD. Install a 4 1/2", 12.6#,L-80,NSCT liner with 4 1/2" X 7" hanger/packer. The liner hanger is to be at ±1 0292'. Cement the liner in place with the total cement volume based upon 50% open-hole enlargement plus the 80' shoe volume, 4 1/2"X7" lap volume and 1 SO' excess on top of the liner with 3 1 /2" drill pipe in the hole. Clean out cement to landing collar. RIH with drillpipe conveyed perforating assembly and perforate the well. POOH LOOP. Run the 4-1/2" L-80 completion string assembly using as much 4-1/2" used tubing and jewelry as possible. Space out and circulate with corrosion inhibitor. Install a BPV and test plug. Remove BOP's. Install and test the production tree to 5000 psi. Pull tree test plug and BPV. Set packer. Test the tubing x casing annulus to .3..5.QQ psi for 30 minutes. Shear RP valve in the upper GLM and freeze protect the well. Set a SPV. Release rig. Complete appropriate documentation and hand-over to Production. /ÌI) ~ ¡ J. 2. Qi 3. ~"\ 4. I \ 5 ~ I 6: ~ \ 7. \.8. 9. 10. 15. 16. 17. 18. 19. 20 21. 22. 23. 24. 25. 26. 27. 28. 29. 12. 13. 14. R ECE\VEO C [ E\ -,:3 -\~) 9 ;) ,i),\élSkij, sjil &, Gas Cons. Commission Anchor: C-31 A Redrill Plan Summary Page 4 ¡ i I ; ¡ !I II II ! i II , I I! : i' , I ! I ¡ i II :i ¡ ¡ I' ; ! II ! I ii 11 'I 11 ¡ i ¡ I ! Ii , I " íl j i ! ! l1é:tred Services Dr~)ing Prudhoe Bay Unit C-PÁD C-25A C-25a \'\Tp2 Ii :¡ HALL!BURTD~ Ii ¡ : II I! II I ,I i: , : II 1'1 I II Ii II ¡ I I I Ii II II I i " 1/6/95 11:38 QM HORIZOKTAL VIEW (TRUE KORTH) SCALE 300 ft. / DIVISION SURVEY REF: WELLHEAD ;'\~ ~ '(., \ (' ç-J ~ '0 .J' (()~ ,:::>; '0 \) \,t>.. 'Î i500 I 11800 I ! 100 0¡'Î 'Î'(,: ~\. 1t>.. \)'?J -10 , 1 C)'è.- 1 10¡\) \. <ò \)C)t>.. «;¡\<òC) z,<òo¡ <ò \) <òt>..C) fo\C) 'ò 3 700 , ' '''''''G'''~.Õ'¿ .'ò::~t~ooo 000 ~ Ú' ~~ I G L-3300 '0 I 00 PROPOSED BHL I TVD 9034.00 MD 11321.71 VS 3638.10 I N¡S 3577,85 S I E/W 659.37 E 400 153.45° 7826 -. ° 7989 - 171.00 8161 - 193.72° VERTICAL VIEW SCALE 300 ft. / DIVISION TVD REF: RKB VERTICAL SECTION REF: 'WELLHEAD Î I i I ~QV I r¿.<0\J- Ie: 3900 3600 " ~~ G '0 00 I 300 I 900 I 1200 I 1800 i 600 I 1500 2100 2400 42.80° @ 8700 MD KOP / TIE IN / START OF CURVE @ 6,000/100 ft 38,82° @ 8800 MD CRITICAL POINT DATA i KOP 1 TIE MD !nc Az I, TVD N/S E/II IN 1 8700 42,80· 146.57· 7751 2124 S 1771 E I START 0;:- I CURVE @ 16.00·/100 f-: I END OF CURVE 9475 32, 00· 226,00' 8400 2507 S 1768 E TSGR 9491 32,00· 226.00· 8413 2513 S 1762 E I TSHB 9569 32,00· 226,00· 8479 2542 S 1732 E I TSAD - TZ4 961932,00· 22G,OO· 8522 2560 S 1713 E TZ3 9826 32,00' 226,00· 8697 2636 S 1634 E TZ2C 994132.00· 226,00· 8795 2679 S 1590 E START OF BUILD 9958 32,00' 226.00· 8810 2685 S 1584 E I í! 12,OO·/1DD f+ TŽl 1036680,91· 226.00· 9028 2914 S 1347 E HOT 10380 82,58· 226,00· 9030 2924 S 1337 E END OF BUILD 1044290.00· 226,00· 9034 2967 S 1292 E 8900 MD @ 9000 MD END OF CURVE TSGR TSHE TSAD - TZ4 TZ2C r~Jhf'7~ ~ koP r:r +0 (Ou...J.( 0.... MRc.. 12.00"/100 ft OF BUILD n 90.00° @ 11322 MD 2500 2800 SECTION PLANE: 169.56 n r\) 3400 Ul r\) Zf37 00 ~ -0 ru RECEIVED 3100 FEB -' 3 1996 1-; !dsim OJ¡ & Gas Cons. Commission f\ or --- f "-, STATE OF ALASKA ¡ ALA., .r\ OIL AND GAS CONSERVATION COMMISSION APPLICATION FOR SUNDRY APPROVALS Abandon -X- Suspend _ Operation Shutdown _ Re-enter suspended well _ Alter casing _ Repair well _ Plugging --X- Time extension Stimulate Change approved program _ Pull tubing _ Variance Perforate Other -1L- Plugback for redrill 6. Datum elevation (OF or KB) KBE = 72.06 feet 7. Unit or Property name Prudhoe Bay Unit 8. Well number C-25 (14-20-11-14) 1203' 7" measured 10270'-10313' (Open) 10068~10107~ 10155~10204~ 10216~10242~ 10253~10270'(Squeezed) 1. Type of Request: 5. Type of Well: Development -X- Exploratory _ Stratigraphic _ Service 2. Name of Operator BP Exploration 3. Address P. O. Box 196612, Anchorage, Alaska 99519-6612 4. Location of well at surface ~~ 1535' SNL, 1031' WEL, SEC. 19, T11N, R14E ~ "r - At top of productive interval ~) 1I07'NSL, 1097' EWL, SEC. 20, TIIN, R14~ FEB - 3 1995 At effective depth A\ ska Oil & Gas Cons. Commission 832' NSL, 1266' EWL, SEC. 20, T11N, R14E a Anchorage At total depth 762' NSL, 1304' EWL, SEC. 20, T11N, R14E 12. Present well condition summary Total depth: measured true vertical 10471 feet 9186 feet Plugs (measured) Effective depth: measured true vertical 10310 feet 9046 feet Junk (measured) Casing Structural Conductor Surface Intermediate Production Liner Perforation depth: Length Size Cemented 110' 2642' 9495' 20" X 30" 13-3/8" 9-5/8" 8 cu yds concrete 3720 cu ft AS /I 1300 cu ft "G" & 130 cu ft PF "c" 360 cu ft Class "G" true vertical 8939'-8977' (Subsea) 9. Permit number 82-144 10. API number 50- 029-20819 11. Field/Pool Prudhoe Bay Field/Oil Pool rt] (Qj p ». Measured depth True vertical depth 143' 2675' 9528' 143' 2675' 8389' 9268'-10471' 8181'-9186' Tubing (size, grade, and measured depth) 5-1/2", L-80 to 9216' with 4-1/2" tailpipe to 10135' MD Packers and SSSV (type and measured depth) 9-5/8" Otis packer @ 9216' MD; 7" Otis "WD" packer @ 10129' MD 13. Attachments Description summary of proposal --X....- Detailed operations program _ BOP sketch 15. Status of well classification as: 14. Estimated date for commencing operation 2/10/95 16. If proposal was verbally approved Oil-x- Name of approver Date approved Service 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. Signed Title Drilling Engineer SupelVisor FOR COMMISSION USE ONLY Conditions of approval: Notify Commission so representative may witness Plug integrity _ BOP Test Location clearance Mechanical Integrity Test _ Subsequent form required 10- Approved by order of the Commission Form 10-403 Rev 06/15/88 Gas Suspended _ Date t" 1,,.15 Commissioner Date SUBMIT IN TRIPLICATE / -' ,..~ T~ ~ To: AOGCC January 30,1995 From: Steve Shultz Prudhoe Bay Drilling Plug back of C-25 MB 12-1 Subject: 1. Pre-rig work: RU CTU, RIH to top of fill/fish at ±1 0,223' 2. Lay a cement plug from 10,223' to 9,668', pull up tubing and downsqueeze 3. RU wireline and jet cut tubing at ±9180 (first full joint below sliding sleeve which is at 9157') secure well for drilling rig The obiective of this plug back is: a. To isolate the perforations b. To prepare the well for sidetracking Timing: Doyon Rig #14 is tentatively scheduled for this well on February 23, 1995. RECE'VED FEB - 3 1995 ¡-\~oska Oil,& Gas Cons. Commission Anchon:,'-' TREE: 6' CIW WELLHEAD: McEVOY ACTUATOR: OTIS ( 13-318', 721MI, L-80, BTRS. , 2641'1- KOP: 3600' MAX ANGLE: 44° @ 5900' 5 1/2', 17#Ift, L-80, ABIMOD BTRS TUBING (IPC) TUBING ID: 4.892'" CAPACITY: .0232 BBUFT TOP OF 7' LINER I 9269' I 9-518', 47#111, L-80, BTRS I 9528' 1- PEFi~ORAT10N SUMMARY REF LOG: DA - BHCA - 10-9-82 SIZE SPF INTERVAL 2118' 4 10,068 - 10.107' A VE ERFS BEHIND ST KB. ELEV . 72.06' BF. ELEV - 39.15' SSSV LANDING NIPPLE L 2170' I (OTIS) (4.562" JD) GAS LIFT MANDRELS 10TIS LBD wI RA LATCH NV MDtBKB TVDss DE 10 3133' 3061' 1° 9 4769' 4666' 22° 8 6150' 5747' 44° 7 7153' 6486' 41° 6 7684' 6894' 38° 5 7844' 7020' 38° 4 8251' 7338' 40° 3 8409' 7459' 40° 2 B86~ 7B01' 41° 1 9030' 7925' 40° 5 1/2' SLIDING SLEEVE OTIS 'XA' (4.562' ID) 9157' I 9216' I 9230' I 9246'1 OTIS PBR SEAL ASSY. 95/8' PACKER ( OTIS) (4.000"10) 4' 1/2 x 5 1/2' X-oVER 41/2', 12.6#Itt.L-80 TAILPIPE 4 1/2" SLIDING SLEEVE OTIS "XA" (3.813" ID) 110,050'1 TOP 10,068' 1 0 127' BTM 4 1/2' -XN" NIPPLE "- (OTIS) (3.725' ID) "7- OTIS 'WD" PACKER (MNDRL - 2.992'" 10) 110,127'1 110,129'1 2 1/2" 4 2 1/2" 4 2 118" 4 2 1/8" 4 10,155 - 10,204' 10,216 - 10,242' 10,253 - 10.270' 10,270 - 10,313' PBTD 1104?o'l- , 10,471'1- .... , , , '\ " ....~ ':'~ ':'~,~ 7', 26#Ift, L-BO, IJ4S DATE REV. BY COMMENTS 10-17-82 INITIAL COMPLETION 1-6·91 A.TEEL PUT ON MAC 8/2191 REVISED TBGTAIL 110 135'1 (MULESHOE 2.992" ID) , (ELMD) 110,132'1 ~ CV, HD, 2 3/8' OD MOTOR. 2.625" BIT. LENGTH. 16'. LOST 9-24-90. TOP IS BELOW 10,215' WLM & CVRD WI SLOUGHED CMT & PC FROM TBG. PRUDHOE SAY UNIT WELL: C-25 (14-20-11-14) API NO: 50-029-20ill SEC 20: TN 11N: RGE 14E 8 P Exploration (Alaska) R.ECEIVED FE8 - 3 1995 1\Ié1ska Oil & Gas Cons. Commission Anchor,~ '('\ WELL PERMIT CHECKLIST FIELD & POOL 64CJ/5¿) ADMINISTRATION ) APPR # ENGINEERING L ¥3/7S -- GEOLOGY AP ~ COMPANY ßf> WELL NAME ~(fc.r C-?ç,4 PROGRAM: exp D dev ~ redrll D aerv D GEOL AREA 77'i"'J UNIT# tl b )' ð ON/OFF SHORE ~I\J REMARKS /-Ó// INIT CLASS .// e.-J/ 1- 2. 3. 4. 5. 6. \ 7. 8. 9. 10. 11. 12. 13. Permit fee attached. . . . . y' Lease number appropriate. . Y Unique well name and number. . Y Well located in a defined pool. . . . . . . . . . .. . Y Well located proper distance from drlg unit boundary. . Y Well located proper distance from other wells. . Y Sufficient acreage available in drilling unit. . . Y If deviated, is wellbore plat included . . . . . . Y Operator only affected party. . . . . . . Y Operator has appropriate bond in force. . . . . . . . . Y Permit can be issued without conservation order. . . . . Y Permit can be issued without administrative approval. . .Y Can permit be approved before 15-day wait. . . . . . . . Y z o ~ N N N N N N N N N N N N N t:::J o ~ þ:J 14. 15. 16. 17. 18. 19. 20. 21- 22. 23. 24. 25. 26. 27. 28. 29. Conductor string provided . . . . . . . . . . . . . Y N J ~~_ Surface casing protects all known USDWs . . . . ..Y ~ CMT vol adequate to circulate on conductor & surf csg. . Y: ¡A- CMT vol adequate to tie-in long string to surf csg . . . Y N , CMT will cover all known productive horizons. . . . . . ~ N Casing designs adequate for C, T, B & permafrost. . . . (!) N Adequate tankage or reserve pit. . . . . . . . . . . . .(f) N If a re-drill, has a 10-403 for abndnmnt been approved..Y N Adequate wellbore separation proposed. . . . . . . . . .~ N If diverter required, is it adequate. . . . . . . . . . .~~ Drilling fluid program schematic & equip list adequate .GZ) N 1) I~ BOPEs adequate . . . . . . . . . . . . . . . . . . . . . ([) N ð~ BOPE press rating adequate; test to ~~ psig.~ N Choke manifold complies w/API RP-53 (May 84). . . . . . .~ AJ~ Work will occur without operation shutdown. . . (X) N Is presence of H2S gas probable. . . . . . . . .Y ~ (J) H ~ t:tj H . '~~ z: ~ ~ H (J) 30. Permit can be issued w/o hydrogen sulfide measures. . . .Y 31. Data presented on potential overpressure zones 32. Seismic analysis 9f shallow gas zones. 33. Seabed condition survey (if off-shore) . 34. Contact name/phone for weekly progress reports [exploratory only] h. ¡:; . , ~ ~ (") t:J:j GEOLOGY: ENGINEERING: RP~ BEW~_ 2..} ('I JDH~ COMMISSION: DWJ~ RAD ~ TAB-~ Comments/Instructions: - HOWljo . A:\FORMS\chekli~ rev 03194 Well History File APPENDIX Information of detailed nature that is not particularly germane to the Well Permitting Process but is part of the history file. To improve the readability of the Well History file and to simplify finding information, information of this nature is accumulated at the end of the file under APPENDIX. No special effort has been made to chronologically organize this category of information. _~e,Subfile 2 is t~pe: LIS TAPE HEADER PRUDHOE BAY UNIT MWD/MAD LOGS RECEiVED # WELL NAME: 2 t:: API NUMBER: JUL v 1996 ~~~~~gR ~OMP ANY~aska Oil & Gas Cons. Commission TAPE CREATION DATE: Anchorage # JOB DATA JOB NUMBER: LOGGING ENGINEER: OPERATOR WITNESS: JOB NUMBER: LOGGING ENGINEER: OPERATOR WITNESS: # SURFACE LOCATION SECTION: TOWNSHIP: RANGE: FNL: FSL: FEL: FWL: ELEVATION(FT FROM KELLY BUSHING: DERRICK FLOOR: GROUND LEVEL: # WELL CASING RECORD 1ST STRING 2ND STRING 3RD STRING PRODUCTION STRING # REMARKS: MWD RUN 1 6745.00 T. McGUIRE D. WESTER MWD RUN 4 D. VAAGEN D. WESTER MSL 0) ~Ç.,ðV{ ::t1=- I ~L{ G C-25A 500292081901 BP EXPLORATION (ALASKA), INC. SPERRY-SUN DRILLING SERVICES 23-JUL-96 MWDRUN 2 MWDRUN 3 T. McGUIRE D. WESTER D. VAAGEN D. WESTER MWD RUN 5 MWD RUN 6 T. McGUIRE D. HIEM 19 11N 14E 1535 1031 72.90 71.40 37.70 OPEN HOLE CASING BIT SIZE (IN) SIZE (IN) 13.375 9.625 8.500 7.000 6.000 T. McGUIRE D. HIEM Atl(~ Da~ lJ~/IAtI1J DRILLERS DEPTH (FT) 2640.0 8729.0 10382.0 11601.0 MWD - EWR/CNP/GR. ALL DEPTHS ARE MEASURED BIT DEPTHS. AV/CV CALCULATED USING THE POWER RULE. DGWD GAMMA RAY DATA FROM 8580 - 9491'. RLL/MPT GAMMA RAY DATA FROM 9491 - 11512'. DGWD GAMMA RAY DATA FROM 11512 - TD. MWD RUN 1 WAS DGWD DIRECTIONAL & GAMMA RAY (NGP). MWD RUN 2 WAS DGWD DIRECTIONAL WITH RECORDED ONLY DGR, EWR PHASE 4, & CNP. MWD RUNS 3 & 4 WERE MPT DIRECTIONAL WITH REALTIME DGR, EWR PHASE 4, & CNP. MWD RUNS 5 & 6 WERE DGWD DIRECTIONAL & REALTIME GAMMA RAY WITH RECORDED ONLY RLL DGR, & SLIM PHASE 4 RESISTIVITY. ONLY 10' WAS DRILLED DURING MWD RUN 5 DUE TO A MWD FAILURE. GAMMA RAY BEFORE CHANGING MUD SYSTEM TO FLOPRO = 17.6 AAPI AT 10360'. GAMMA RAY AFTER CHANGING MUD SYSTEM TO FLOPRO = 23.0 AAPI AT 10360'. APPARENT GAMMA RAY SHIFT OF 5.35 AAPI. A MAD PASS WAS PERFORMED WITH THE SLIM PHASE 4 LOGGING TOOL DURING THE HOLE OPENER RUN. CNC PROCESSING PARAMETERS: SANDSTONE MATRIX, BOREHOLE CORRECTION = 8.5", FORMATION SALINITY = 11500 ppm CCL. NO DEPTH SHIFTING WAS DONE AS THIS IS THE DEPTH REFER- ENCE FOR THIS WELL (PER JERRY SIOK OF BP 18-JUL-96) . $ FILE 'HEADER FILE NUMBER: EDITED MERGED ~ Deptn shifted DEPTH INCREMENT: # FILE SUMMARY PBU TOOL CODE GR RP NPHI $ 1 and clipped curves; all bit runs merged. .5000 START DEPTH 8662.0 9481.0 9473.0 STOP DEPTH 11541.0 11519.0 10339.0 # BASELINE CURVE FOR SHIFTS: CURVE SHIFT DATA (MEASURED DEPTH) --------- EQUIVALENT UNSHIFTED DEPTH --------- BASELINE DEPTH $ # MERGED DATA SOURCE PBU TOOL CODE BIT RUN NO MERGE TOP MERGE BASE MWD 1 8735.0 9547.0 MWD 2 9547.0 9930.0 MWD 3 9930.0 10018.0 MWD 4 10018.0 10385.0 MWD 5 10385.0 10396.0 MWD 6 10396.0 11601.0 $ # REMARKS: MERGED MAIN PASS. $ # CN WN FN COUN STAT BP EXPLORATION (ALASKA) C-25A PRUDHOE BAY NORTH SLOPE ALASKA * FORMAT RECORD (TYPE# 64) ONE DEPTH PER FRAME Tape depth ID: F 10 Curves: Name Tool Code Samples Units API API API API Log Crv Crv Size Length Typ Typ CIs Mod 1 GR MWD 68 1 AAPI 4 4 90 310 01 1 2 RPX MWD 68 1 OHMM 4 4 90 120 46 1 3 RPS MWD 68, 1 OHMM 4 4 90 120 46 1 4 RPM MWD 68 1 OHMM 4 4 90 120 46 1 5 RPD MWD 68 1 OHMM 4 4 90 120 46 1 6 NPHI MWD 68 1 PU-S 4 4 90 890 01 1 7 FCNT MWD 68 1 CPS 4 4 90 334 31 1 ,8 9 10 NCNT MWb FET MWD ROP MWD 68 68 68 * DATA RECORD 1 1 1 CPS HR FPHR 4 4 90 334 30 1 4 4 90 180 01 1 4 4 90 810 01 1 ------- 40 (TYPE# 0) 1018 BYTES * Total Data Records: 259 Tape File Start Depth Tape File End Depth Tape File Level Spacing = Tape File Depth Units **** FILE TRAILER **** = 11620.000000 8645.000000 0.500000 = = Feet LIS representation code decoding summary: Rep Code: 68 65462 datums Tape Subfile: 2 Minimum record length: Maximum record length: 371 records... 62 bytes 1018 bytes Tape'Subfile 3 is type: LIS FILE HEADER FILE NUMBER: EDITED MERGED MAD Depth shifted DEPTH INCREMENT: # FILE SUMMARY PBU TOOL CODE GR RP $ 2 and clipped curves; all MAD runs merged using earliest passes. .5000 START DEPTH 10328.0 10382.0 STOP DEPTH 11577.0 11583.0 # MERGED DATA SOURCE PBU TOOL CODE MAD $ MAD RUN NO. MAD PASS NO. MERGE TOP 6 1 10351.0 MERGE BASE 11601.0 # REMARKS: MAD PASS. $ # CN WN FN COUN STAT BP EXPLORATION (ALASKA) C-25A PRUDHOE BAY NORTH SLOPE ALASKA * FORMAT RECORD (TYPE# 64) ONE DEPTH PER FRAME Tape depth ID: F 7 Curves: Name Tool Code Samples Units API API API API Log Crv Crv Size Length Typ Typ CIs Mod 1 GR MAD 68 1 AAPI 4 4 95 995 99 1 2 RPX MAD 68 1 OHMM 4 4 95 995 99 1 3 RPS MAD 68 1 OHMM 4 4 95 995 99 1 4 RPM MAD 68 1 OHMM 4 4 95 995 99 1 5 RPD MAD 68 1 OHMM 4 4 95 995 99 1 6 FET MAD 68 1 HR 4 4 95 995 99 1 7 RATE MAD 68 1 FPHR 4 4 95 995 99 1 ------- 28 * DATA RECORD (TYPE# 0) 998 BYTES * Total Data Records: 84 Tape File Start Depth Tape File End Depth Tape File Level Spacing Tape File Depth Units = 11620.000000 10320.000000 0.500000 Feet Rep Code: 68 20809 datums Tape Subfile: 3 108 records... Minimum record length: 62 bytes Maximum record length: 998 bytes LIS representation code decoding summary: **** FILE TRAILER **** Tape Subfile 4 is type: LIS FILE HEADER FILE NUMBER: RAW MWD Curves and BIT RUN NO: DEPTH INCREMENT: # FILE SUMMARY VENDOR TOOL CODE GR $ 3 log header data for each bit run in separate files. 1 .5000 START DEPTH 8662.0 STOP DEPTH 9474.0 # LOG HEADER DATA DATE LOGGED: SOFTWARE SURFACE SOFTWARE VERSION: DOWNHOLE SOFTWARE VERSION: DATA TYPE (MEMORY OR REAL-TIME) : TD DRILLER (FT): TOP LOG INTERVAL (FT): BOTTOM LOG INTERVAL (FT): BIT ROTATING SPEED (RPM): HOLE INCLINATION (DEG) MINIMUM ANGLE: MAXIMUM ANGLE: # TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE NGP NATURAL GAMMA PROBE $ # BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLER'S CASING DEPTH (FT): # BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S): MUD PH: MUD CHLORIDES (PPM): FLUID LOSS (C3): RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): MUD AT MAX CIRCULATING TEMPERATURE: MUD FILTRATE AT MT: MUD CAKE AT MT: # # NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): TOOL STANDOFF (IN): EWR FREQUENCY (HZ): # REMARKS: MWD RUN 1. 16-MAR-95 MSC 1.32 / ADAC 2.19A NGP 5.741 / CIM 3.93 MEMORY 9547.0 8735.0 9547.0 o 29.2 40.7 TOOL NUMBER NGP 145 8.500 8729.0 BIOPOLY 9.90 85.0 11.4 14250 4.8 .000 .000 .000 .000 .0 133.0 .0 . 0 .00 .000 . 0 o $ . # CN WN FN COUN STAT BP EXPLORATION (ALASKA) C-25A PRUDHOE BAY NORTH SLOPE ALASKA * FORMAT RECORD (TYPE# 64) ONE DEPTH PER FRAME Tape depth ID: F 2 Curves: Name Tool Code Samples Units API API API API Log Crv Crv Size Length Typ Typ CIs Mod 1 2 GR MWD ROP MWD 68 68 1 1 AAPI FPHR 4 4 4 90 310 01 4 90 810 01 1 1 ------- 8 * DATA RECORD (TYPE# 0) 1014 BYTES * Total Data Records: 22 Tape File Start Depth Tape File End Depth Tape File Level Spacing Tape File Depth Units 9550.000000 8660.000000 0.500000 Feet **** FILE TRAILER **** LIS representation code decoding summary: Rep Code: 68 70806 datums Tape Subfile: 4 85 records... Minimum record length: Maximum record length: 62 bytes 1014 bytes SANDSTONE .00 8.500 80.0 145.0 80.0 80.0 .240 .140 .100 .300 BIOPOLY 9.90 79.0 9.8 14750 4.4 8.500 8729.0 TOOL NUMBER P0349CNRG6 P0349CNRG6 P0349CNRG6 30.3 34.3 MSC 1.32 / ADAC 2.19A NGP 5.741 / CIM 3.93 MEMORY 9930.0 9547.0 9930.0 o 17-MAR-95 # NEUTRON TOOL MATRIX; MATRIX DENSITY: HOLE CORRECTION (IN): # BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S): MUD PH: MUD CHLORIDES (PPM): FLUID LOSS (C3): RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): MUD AT MAX CIRCULATING TEMPERATURE: MUD FILTRATE AT MT: MUD CAKE AT MT: # BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLER'S CASING DEPTH (FT): # BOTTOM) TOOL TYPE COMPENSATED NEUTRON ELECTROMAG. RESIS. 4 DUAL GAMMA RAY TOOL STRING (TOP TO VENDOR TOOL CODE CNP EWR4 DGR $ # # LOG HEADER DATA DATE LOGGED: SOFTWARE SURFACE SOFTWARE VERSION: DOWNHOLE SOFTWARE VERSION: DATA TYPE (MEMORY OR REAL-TIME) : TD DRILLER (FT): TOP LOG INTERVAL (FT): BOTTOM LOG INTERVAL (FT): BIT ROTATING SPEED (RPM): HOLE INCLINATION (DEG) MINIMUM ANGLE: MAXIMUM ANGLE: STOP DEPTH 9871.0 9863.0 9854.0 FILE HEADER FILE NUMBER: RAW MWD Curves and BIT RUN NO: DEPTH INCREMENT: # FILE SUMMARY VENDOR TOOL CODE GR EWR4 CNP $ START DEPTH 9490.0 9481.0 9478.0 log header data for each bit run in separate files. 2 .5000 4 Tape'Subfile 5 is type: LIS 62 bytes 1018 bytes Minimum record length: Maximum record length: 31051 datums Rep Code: 68 Tape Subfile: 5 108 records... API API API API Log Crv Crv Name Tool Code Samples Units Size Length Typ Typ CIs Mod 1 GR MWD 68 1 AAPI 4 4 90 310 01 1 2 RPX MWD 68 1 OHMM 4 4 90 120 46 1 3 RPS MWD 68 1 OHMM 4 4 90 120 46 1 4 RPM MWD 68 1 OHMM 4 4 90 120 46 1 5 RPD MWD 68 1 OHMM 4 4 90 120 46 1 6 NPHI MWD 68 1 PU-S 4 4 90 890 01 1 7 FCNT MWD 68 1 CPS 4 4 90 334 31 1 8 NCNT MWD 68 1 CPS 4 4 90 334 30 1 9 FET MWD 68 1 HR 4 4 90 180 01 1 10 ROP MWD 68 1 FPHR 4 4 90 810 01 1 ------- 40 * DATA RECORD (TYPE# 0) 1018 BYTES * Total Data Records: 41 Tape File Start Depth = 9935.000000 Tape File End Depth = 9470.000000 Tape File Level Spacing = 0.500000 Tape File Depth Units = Feet **** FILE TRAILER **** LIS representation code decoding summary: 10 Curves: Tape depth ID: F ONE DEPTH PER FRAME * FORMAT RECORD (TYPE# 64) BP EXPLORATION (ALASKA) C-25A PRUDHOE BAY NORTH SLOPE ALASKA CN WN FN COUN STAT # MWD RUN 2. $ REMARKS: # . 0 To,OL STANDOFF· (IN)": EWR FREQUENCY (HZ): o Tape Subfile 6 is type: LIS FILE HEADER FILE NUMBER: RAW MWD Curves and BIT RUN NO: DEPTH INCREMENT: # FILE SUMMARY VENDOR TOOL CODE GR EWR4 CNP $ 5 log header data for each bit run in separate files. 3 .5000 START DEPTH 9880.0 9895.0 9886.0 STOP DEPTH 9991.0 9984.0 9974.0 # LOG HEADER DATA DATE LOGGED: SOFTWARE SURFACE SOFTWARE VERSION: DOWNHOLE SOFTWARE VERSION: DATA TYPE (MEMORY OR REAL-TIME) : TD DRILLER (FT): TOP LOG INTERVAL (FT): BOTTOM LOG INTERVAL (FT): BIT ROTATING SPEED (RPM): HOLE INCLINATION (DEG) MINIMUM ANGLE: MAXIMUM ANGLE: # TOOL STRING (TOP TO VENDOR TOOL CODE CNP EWR4 DGR $ BOTTOM) TOOL TYPE COMPENSATED NEUTRON ELECTROMAG. RESIS. 4 DUAL GAMMA RAY # BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLER'S CASING DEPTH (FT): # BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S): MUD PH: MUD CHLORIDES (PPM): FLUID LOSS (C3): RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): MUD AT MAX CIRCULATING TEMPERATURE: MUD FILTRATE AT MT: MUD CAKE AT MT: # NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): # 18-MAR-95 MSC 1.32 / ADAC 2.19A NGP 5.741 / CIM 3.93 REAL-TIME 10018.0 9930.0 10018.0 o 33.5 34.0 TOOL NUMBER P0349CNRG6 P0349CNRG6 P0349CNRG6 8.500 8729.0 BIOPOLY 9.80 97.0 9.5 13100 4.0 .220 .114 .120 .260 76.0 153.0 76.0 76.0 SANDSTONE .00 8.500 TOOL STANDOFF. ( IN)· : EWR FREQUENCY (HZ) : # REMARKS: MWD RUN 3. $ # CN BP EXPLORATION (ALASKA) WN C-25A FN PRUDHOE BAY COUN NORTH SLOPE STAT ALASKA .0 o * FORMAT RECORD (TYPE# 64) ONE DEPTH PER FRAME Tape depth ID: F 10 Curves: API API API API Log Crv Crv Name Tool Code Samples Units Size Length Typ Typ CIs Mod 1 GR MWD 68 1 AAPI 4 4 90 310 01 1 2 RPX MWD 68 1 OHMM 4 4 90 120 46 1 3 RPS MWD 68 1 OHMM 4 4 90 120 46 1 4 RPM MWD 68 1 OHMM 4 4 90 120 46 1 5 RPD MWD 68 1 OHMM 4 4 90 120 46 1 6 NPHI MWD 68 1 PU-S 4 4 90 890 01 1 7 FCNT MWD 68 1 CPS 4 4 90 334 31 1 8 NCNT MWD 68 1 CPS 4 4 90 334 30 1 9 FET MWD 68 1 HR 4 4 90 180 01 1 10 ROP MWD 68 1 FPHR 4 4 90 810 01 1 ------- 40 * DATA RECORD (TYPE# 0) 1018 BYTES * Total Data Records: 13 Tape File Start Depth 10020.000000 Tape File End Depth 9875.000000 Tape File Level Spacing 0.500000 Tape File Depth Units Feet **** FILE TRAILER **** LIS representation code decoding summary: Rep Code: 68 74008 datums Tape Subfile: 6 80 records... Minimum record length: Maximum record length: 62 bytes 1018 bytes Tape'Subfile 7 is type: LIS FILE HEADER FILE NUMBER: RAW MWD Curves and BIT RUN NO: DEPTH INCREMENT: # FILE SUMMARY VENDOR TOOL CODE GR EWR4 CNP $ 6 log header data for each bit run in separate files. 4 .5000 START DEPTH 9989.0 9982.0 9972.0 STOP DEPTH 10356.0 10349.0 10339.0 # LOG HEADER DATA DATE LOGGED: SOFTWARE SURFACE SOFTWARE VERSION: DOWNHOLE SOFTWARE VERSION: DATA TYPE (MEMORY OR REAL-TIME) : TD DRILLER (FT): TOP LOG INTERVAL (FT): BOTTOM LOG INTERVAL (FT): BIT ROTATING SPEED (RPM): HOLE INCLINATION (DEG) MINIMUM ANGLE: MAXIMUM ANGLE: # TOOL STRING (TOP TO VENDOR TOOL CODE CNP EWR4 DGR $ BOTTOM) TOOL TYPE COMPENSATED NEUTRON ELECTROMAG. RESIS. 4 DUAL GAMMA RAY # BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLER'S CASING DEPTH (FT): # BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S): MUD PH: MUD CHLORIDES (PPM): FLUID LOSS (C3): RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): MUD AT MAX CIRCULATING TEMPERATURE: MUD FILTRATE AT MT: MUD CAKE AT MT: # NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): # 20-MAR-95 MSC 1.32 / ADAC 2.19A NGP 5.741 / CIM 3.93 REAL-TIME 10385.0 10018.0 10385.0 o 36.2 72.3 TOOL NUMBER P0349CNRG6 P0349CNRG6 P0349CNRG6 8.500 8729.0 BIOPOLY 9.80 88.0 8.8 12500 4.4 .260 .134 .200 .300 82.0 166.0 82.0 82.0 SANDSTONE .00 8.500 62 bytes 1018 bytes Minimum record length: Maximum record length: 104 records... Tape Subfile: 7 API API API API Log Crv Crv Name Tool Code Samples Units Size Length Typ Typ CIs Mod 1 GR MWD 68 1 AAPI 4 4 90 310 01 1 2 RPX MWD 68 1 OHMM 4 4 90 120 46 1 3 RPS MWD 68 1 OHMM 4 4 90 120 46 1 4 RPM MWD 68 1 OHMM 4 4 90 120 46 1 5 RPD MWD 68 1 OHMM 4 4 90 120 46 1 6 NPHI MWD 68 1 PU-S 4 4 90 890 01 1 7 FCNT MWD 68 1 CPS 4 4 90 334 31 1 8 NCNT MWD 68 1 CPS 4 4 90 334 30 1 9 FET MWD 68 1 HR 4 4 90 180 01 1 10 ROP MWD 68 1 FPHR 4 4 90 810 01 1 ------- 40 * DATA RECORD (TYPE# 0) 1018 BYTES * Total Data Records: 37 Tape File Start Depth = 10390.000000 Tape File End Depth = 9970.000000 Tape File Level Spacing = 0.500000 Tape File Depth Units = Feet **** FILE TRAILER **** LIS representation code decoding summary: Rep Code: 68 40303 datums 10 Curves: Tape depth ID: F ONE DEPTH PER FRAME * FORMAT RECORD (TYPE# 64) BP EXPLORATION (ALASKA) C-25A PRUDHOE BAY NORTH SLOPE ALASKA CN WN FN COUN STAT # MWD RUN 4. $ REMARKS: # .0 TOOL STANDOFF. (IN)-: EWR FREQUENCY (HZ): o o . 0 .00 .000 85.0 185.8 85.0 85.0 .240 .114 .220 .280 BIOPOLY 9.80 75.0 8.5 12400 4.8 6.000 10382.0 TOOL NUMBER P0001SP4 P0001SP4 .0 . 0 MSC 1.32 / ADAC 2.19A NGP 5.741 / CIM 3.93 MEMORY 10396.0 10385.0 10396.0 o 23-MAR-95 TOOL STANDOFF (IN): EWR FREQUENCY (HZ): # NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN); # BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S): MUD PH: MUD CHLORIDES (PPM): FLUID LOSS (C3): RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): MUD AT MAX CIRCULATING TEMPERATURE: MUD FILTRATE AT MT: MUD CAKE AT MT: # BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLER'S CASING DEPTH (FT): # BOTTOM) TOOL TYPE DUAL GAMMA RAY ELECTROMAG. RESIS. 4 TOOL STRING (TOP TO VENDOR TOOL CODE DGR EWR4 $ # # LOG HEADER DATA DATE LOGGED: SOFTWARE SURFACE SOFTWARE VERSION: DOWNHOLE SOFTWARE VERSION: DATA TYPE (MEMORY OR REAL-TIME) : TD DRILLER (FT): TOP LOG INTERVAL (FT): BOTTOM LOG INTERVAL (FT): BIT ROTATING SPEED (RPM): HOLE INCLINATION (DEG) MINIMUM ANGLE: MAXIMUM ANGLE: STOP DEPTH 10307.0 10314.0 FILE HEADER FILE NUMBER: RAW MWD Curves and BIT RUN NO: DEPTH INCREMENT: # FILE SUMMARY VENDOR TOOL CODE GR EWR4 $ START DEPTH 10206.0 10213.0 log header data for each bit run in separate files. 5 .5000 7 Tape'Subfile 8 is type: LIS REMARKS: MWD RUN 5. $ # CN WN FN COUN STAT BP EXPLORATION (ALASKA) C-25A PRUDHOE BAY NORTH SLOPE ALASKA * FORMAT RECORD (TYPE# 64) ONE DEPTH PER FRAME Tape depth ID: F 6 Curves: Name Tool Code Samples Units API API API API Log Crv Crv Size Length Typ Typ CIs Mod 1 GR MWD 68 1 AAPI 4 4 90 310 01 1 2 RPX MWD 68 1 OHMM 4 4 90 120 46 1 3 RPS MWD 68 1 OHMM 4 4 90 120 46 1 4 RPM MWD 68 1 OHMM 4 4 90 120 46 1 5 RPD MWD 68 1 OHMM 4 4 90 120 46 1 6 ROP MWD 68 1 FPHR 4 4 90 810 01 1 ------- 24 * DATA RECORD (TYPE# 0) 1014 BYTES * Total Data Records: 12 Tape File Start Depth Tape File End Depth Tape File Level Spacing = Tape File Depth Units 10400.000000 10200.000000 0.500000 = = Feet **** FILE TRAILER **** LIS representation code decoding summary: Rep Code: 68 76816 datums Tape Subfile: 8 77 records... Minimum record length: Maximum record length: 62 bytes 1014 bytes · 0 .00 .000 80.0 156.0 74.0 74.0 .090 .048 .100 .050 FLOPRO 9.00 66.0 8.8 42800 4.6 6.000 10382.0 TOOL NUMBER P0001SP4 P0001SP4 80.0 93.1 MSC 1.32 / ADAC 2.19A NGP 5.741 / CIM 3.93 MEMORY 11601.0 10396.0 11601.0 o 25-MAR-95 NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): TOOL STANDOFF (IN): # # BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S): MUD PH: MUD CHLORIDES (PPM): FLUID LOSS (C3): RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): MUD AT MAX CIRCULATING TEMPERATURE: MUD FILTRATE AT MT: MUD CAKE AT MT: # BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLER'S CASING DEPTH (FT): # BOTTOM) TOOL TYPE DUAL GAMMA RAY ELECTROMAG. RESIS. 4 TOOL STRING (TOP TO VENDOR TOOL CODE DGR EWR4 $ # # LOG HEADER DATA DATE LOGGED: SOFTWARE SURFACE SOFTWARE VERSION: DOWNHOLE SOFTWARE VERSION: DATA TYPE (MEMORY OR REAL-TIME) : TD DRILLER (FT): TOP LOG INTERVAL (FT): BOTTOM LOG INTERVAL (FT): BIT ROTATING SPEED (RPM): HOLE INCLINATION (DEG) MINIMUM ANGLE: MAXIMUM ANGLE: STOP DEPTH 11512.0 11519.0 11541.0 FILE HEADER FILE NUMBER: RAW MWD Curves and BIT RUN NO: DEPTH INCREMENT: # FILE SUMMARY VENDOR TOOL CODE GR EWR4 GRD $ START DEPTH 10294.0 10300.0 11512.0 log header data for each bit run in separate files. 6 .5000 8 Tape Subfile 9 is type: LIS EWR FREQUENCY (HZ): o # REMARKS: MWD RUN 6. THE CURVE IIGRDII REFERS TO THE GAMMA RAY FROM THE NGP TOOL. $ # CN WN FN COUN STAT BP EXPLORATION (ALASKA) C-25A PRUDHOE BAY NORTH SLOPE ALASKA * FORMAT RECORD (TYPE# 64) ONE DEPTH PER FRAME Tape depth ID: F 8 Curves: API API API API Log Crv Crv Name Tool Code Samples Units Size Length Typ Typ CIs Mod 1 GR MWD 68 1 AAPI 4 4 90 310 01 1 2 RPX MWD 68 1 OHMM 4 4 90 120 46 1 3 RPS MWD 68 1 OHMM 4 4 90 120 46 1 '4 RPM MWD 68 1 OHMM 4 4 90 120 46 1 5 RPD MWD 68 1 OHMM 4 4 90 120 46 1 6 FET MWD 68 1 HR 4 4 90 180 01 1 7 ROP MWD 68 1 FPHR 4 4 90 810 01 1 8 GRD MWD 68 1 AAPI 4 4 90 310 01 1 ------- 32 * DATA RECORD (TYPE# 0) 1014 BYTES * Total Data Records: 96 Tape File Start Depth = 11620.000000 Tape File End Depth = 10290.000000 Tape File Level Spacing 0.500000 Tape File Depth Units = Feet **** FILE TRAILER **** LIS representation code decoding summary: Rep Code: 68 64253 datums Tape Subfile: 9 164 records... Minimum record length: Maximum record length: 42 bytes 1014 bytes · 0 .00 .000 78.0 177.0 68.0 80.0 .080 .040 .100 .080 FLOPRO 9.10 74.0 8.8 40800 4.4 6.000 10382.0 TOOL NUMBER P0001SP4 P0001SP4 80.1 93.1 MSC 1.32 / ADAC 2.19A NGP 5.741 / CIM 3.93 MEMORY 11601.0 10328.0 11601.0 o 26-MAR-95 NEUTRON TOOL MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): TOOL STANDOFF (IN): # # BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S): MUD PH: MUD CHLORIDES (PPM): FLUID LOSS (C3): RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): MUD AT MAX CIRCULATING TEMPERATURE: MUD FILTRATE AT MT: MUD CAKE AT MT: # BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE (IN): DRILLER'S CASING DEPTH (FT): # BOTTOM) TOOL TYPE DUAL GAMMA RAY ELECTROMAG. RESIS. 4 TOOL STRING (TOP TO VENDOR TOOL CODE DGR EWR4 $ # # LOG HEADER DATA DATE LOGGED: SOFTWARE SURFACE SOFTWARE VERSION: DOWNHOLE SOFTWARE VERSION: DATA TYPE (MEMORY OR REAL-TIME) : TD DRILLER (FT): TOP LOG INTERVAL (FT): BOTTOM LOG INTERVAL (FT): BIT ROTATING SPEED (RPM): HOLE INCLINATION (DEG) MINIMUM ANGLE: MAXIMUM ANGLE: STOP DEPTH 11577.0 11583.0 FILE HEADER FILE NUMBER: RAW MAD Curves and log MAD RUN NUMBER: MAD PASS NUMBER: DEPTH INCREMENT: # FILE SUMMARY VENDOR TOOL CODE GR EWR4 $ START DEPTH 10328.0 10382.0 header data for each pass of each run in separate files. 6 1 .5000 9 Tape Subfile 10 is type: LIS 62 bytes 998 bytes . Minimum record length: Maximum record length: 150 records... Tape Subfile: 10 97625 datums Rep Code: 68 LIS representation code decoding summary: **** FILE TRAILER **** Feet Tape File Start Depth Tape File End Depth Tape File Level Spacing = Tape File Depth Units 11620.000000 10320.000000 0.500000 84 Total Data Records: 998 BYTES * (TYPE# 0) * DATA RECORD * FORMAT RECORD (TYPE# 64) ONE DEPTH PER FRAME Tape depth ID: F 7 Curves: API API API API Log Crv Crv Name Tool Code Samples Units Size Length Typ Typ CIs Mod 1 GR MAD 68 1 AAPI 4 4 95 995 99 1 2 RPX MAD 68 1 OHMM 4 4 95 995 99 1 3 RPS MAD 68 1 OHMM 4 4 95 995 99 1 4 RPM MAD 68 1 OHMM 4 4 95 995 99 1 5 RPD MAD 68 1 OHMM 4 4 95 995 99 1 6 FET MAD 68 1 HR 4 4 95 995 99 1 7 RATE MAD 68 1 FPHR 4 4 95 995 99 1 ------- 28 BP EXPLORATION (ALASKA) C-25A PRUDHOE BAY NORTH SLOPE ALASKA CN WN FN COUN STAT # MAD PASS. $ REMARKS: # o ßVfR FREQUENCY, (HZ) - : Tape Subfile 11 is type: .LIS 96/ 7/23 01 **** REEL TRAILER **** 96/ 7/24 01 Tape Subfile: 11 2 records... Minimum record length: Maximum record length: 132 bytes 132 bytes End of execution: Wed 24 JLY 96 9:34a Elapsed execution time = 3.74 seconds. SYSTEM RETURN CODE = 0 NOTICE The following well logs and oversized documents have been placed in offsite storage. If you would like to view the original documents, please contact the AOGCC librarian. AOGCC 3/4/2005 ù ;u { ;;)1 AtMC7 I MPT SYSTEM I u ~ « :x:: (/) « , ....J «I ....J w _i W, ;:£1 Z; u.. cr;' 0; >-, ....: .I ~' ('11' « 0 ~' «, IXI ...., ;; o:¡ LU ....J' 0, ~: Zl ....J' ~ o..! u..1 Xi « Q¡ U1; LU, ;:)¡ (T)[ <.> (/) cr:1 U1 LU 0..' ::> Co. 1 ...., (/) CCI' ..¡ ..I >1 ~ c:: c:' Q. ~I ë. :2: +:: l1Ji ~I ;:¡ ~i E, Q' (J 01 <.>1 ü:1 -I; <.>1 Permanent Datum : Log Meas. From Drlg. Meas. From: NGP NATURAL GAl\;ll\lA PROBE DGH DUAL GAl\E\'iA RAY EWR4 ELECTUOIVIAGNETIC W A VERESISTIVITY Cumpany : HP EXPLORATI()N~)ALASKA). [~C. .'. ._~,._. ..___..___..___..__' ,,_____M.__.._.~_ .___....._.._.~~_"..,.~..~.,.._.._..,,_..._,__._,......_,____ .......__( ~_:~c ..~~,.._,...~' _~_ '.,. .M,'.'..... ..........._... \'" Á 1 I _~Í!L___ ....:_I)~ y ~~__1_~1~\1;7 ¡;::.1L~L(i;" / ¡'(f()--. Well : C-25A 'í'/(~, ';', '¿9'<h.. -.",,--.--.---,-,..- ,--------.-.-.----..---,--...--,-. .---.-......----.-- ---.------.,.6""'.7"-" --- ,. .... ....." t"f') ....' " -1/j"'J (0/: . I~· I .1 I)I~ 1 :DIIOI'" BA" ('¡lO/;_ I,~: ". ~ Ie ( : . '- u ' :~. J. c;ì'Ç; t"o/· ;:£ --------..----.-,--...--.-,-.....,--,.".,..---.-.. -----.. ..,.--.--..-..----.-. ..._!.....(J........ .I/¡?J/'" ". -' ,,-..., ~'ijbll Z ~ Cuuntry o Q .. ~ ¡ 1535 FNL 1031 FEL 1-11 ~~ SEC 19, TllN, R14E C1 ð r-y;5-:-959-:68~oo--x-~-66-;.-~-:f53-:oö-'_·--' Ii: :3 API 50-029-20819-01 MEAN SEA LEVEL Elev.: 0.00 ft --------~-_._----- ----.------.- RKB 72.90 ft Ab.Perm.Dat. _._-_.._--_.~._-_._--_._._--------- RKB L'SA OTHER SERVICES ". .- ....",.,...-. '" . .,....--.-----,. Elev. KB 72.90 DF 71.40 GL 37.70 WD 0.00 --------_.-.,----~-- Borehole Record Size From ~ To : End Inc. (in) '(ft TVD) i(ft TV D): (de g) _____-ª-.:..?g_9____J77~~_ 9028 81.2 6. OOO..,~___._. .~º2_~__.~__..___,~q,~_~.___.__~9....:_~__._ Casing Record Size Weight From To (in) (lb/ft) (ft TVO) (ft TV D) _l:.~~Z?---i___2?_'_º____, ___.___.__ ,__q__,__ .n 2?~0__ 9.625, 47 . 0 0 7770 ----'---,--_..~---+---- --- .,..-. .--_... ---... "...."~. 7.000 29.0 7660 9028 .~-----------,--_._._.__._---....__...- -- -- - ..------'-.".. ---"'-'-' ~,,_..._--_._-_.._~-_.. --- -.--..--+-------- _.._ __ ___ _--L...-..-______~____________.~_____ -.--.------- .---...----.---....---.-..- .- .---.-." -- --_.~ -..l.--______.....__ _~_.__. _._._._.. --- ._._--------~-~~------- --- --.-------..------ 11 (J-l MEr I MPT SYSTEM I I 'I <->, ;;?:! ,I ~i en' ~\ 1 ~i .....II w ....1 W, o::t zl ~I c: 0' >- ~ ¡:: <t (T), co ~ ~I w .....I ~ 0 Z ~ J: u.. c:c ~I <t 0 LO LO ;:) (T) U N c..1 en c:: ~ w J ;:) c.. en WI .. ! .. .. i ;:..1 æi D..' ã:i E' ~ 01 u, I ROP DGR CNØ RATE OF PENETRATION DUAL GAMMA RAY C01VIPENSATED NEUTRON POROSITY COIllpany : BP EXPLORATION (ALASKA), INC. ~~_._--_._"--.' ..~-~_._.._----_._- ;:!: Rig : DOYON 14 ------------.--.--------R-..ET~.F-.u--' . ,.'.. ...... .,,,.. ---- -, ,,' '... 'u... ,.. Well : C-25A .. -, I \/ E D _______----¡¡¡-¡, ' _____._._,_ ___,___u .____' .,_"._" __ .._____ __..___.____.___ f'-!J lll{ì. [~ ", I i.. I, 1 ~¡ ( lcn '" " , PRUDHO~ BAY'" '> xf':} ----f ê1sha uTI&-¿, ,:J.-:~--.._" - ..-,....--- --. ------.-----......,---.-- USA An¡;hord~le '''.I'fIssiOl1 I~~icld z ~ Country o o .. ~ I 1535 FNL 1031 FEL ~ SEÇ_.!~-I~~~~ R1~____.______.___._._, ~ ð Y=5,959,683.00 X=664,353.00 if 3 API 50-029-20819-01 OTHER SERVICES .---- -------.----.---.--.--.- Permanent Datum MEAN SEA LEVEL Elev.: 0.00 ft ------ Log Meas. From !3~ª-__, 72.90 ft Ab. Perm. Oat. Or 1 g. Meas. Fr om: ~~-ª--_________.._.___ I Elev. KB 72.90 OF 71. 40 GL 37.70 WO 0.00 Borehole Record Casing Record Size From: To ¡ End Inc. Size Weight: (in) (ft Mo) (ft Mo)! (de g) (in) (lb/ft) 8.500 1 8731: 10382 81. 2 13.375, 72.0 - . - -..--- -...-.--t----. .__._,,--~__,.__--.________-+-___._.___,_... --------.-----...-..--------- ~_.- -1._.. L_ H_.6.:-ºº º_~..._. ~_~~__~ ~_. ~.___1..~~_0 1_----1- ___,~_º...___1.___,___~_._.§??_ _~-.--~-?-.:-º-.h ~,. . . 7.000 29.0 From To (ft Mo)' (ft MD) o 2640 --.-.'----.- .-. .--'- o 8729 . __·~,_·,..··___..·n_____. 8582 10382 _ ..___ .____ _.._~_____~ .__ _.,__._~_~______________.-------4--_______ _ -"---' -~----- - - ---".-. ......---.-.- -- -----.-- -----_._-- -....------ --'~~-- - ..--_. -. ---- ~_. .-.' -.-----......--.-------- _....--- -- I . ~--._. -_..- -- --------""--.- ----.--- ,-------_._--~- .... -- ----'-.."1---.-------.--¡----------'------- ---' ..-. ~ ----...- ,..- ------'.-. J_.. _, ,;:rr k)/ Atw:.:7 I MPT SYSTEM I ü ~ ex: ~ VJ ex: ..,¡ w 5 ..,¡ w '<:'J' Z L.L. ~ 0 >- C;; ~ ¡:: ex: ~ ex: to ~ a:: w ..,¡ 0 0 z ..,¡ $ D.. J: L.L. ex: >< ex: 0 I.n I.n W I :> (I') 0 N VJ a:: ~ w J D.. :> D.. VJ IX) ·.1 .. ..I I c: ~I ~I 0 +:: ~I ::;I, -c " ro ãJ 0: ãJ u 0 0 3: OJ ü: ..,¡ 0 DGR CNØ DUAL GAMMA RAY COMPENSATED NEUTRON POROSITY /jO.<,"" < /"""" 'Q>~ "Ý//. .... ,,< ' COItlI)any : HP EXPLOn.~rjON'(1)~LÁ'SKÎ.\h INC. -------------.--.-----~<r::.---'b.J~---:.:-.~----.---...-.--.--..---._- 61 .' < ~ /\ Rig : DOYON 14 "Ý~1<9.s·(, "('9Ç1, (,,/ .---- --_._------'--%/:-~;--_.!.~.~~_.._._---_..._' .-.-..--.,..-.. '--"----'-'- ~ " Well : C-25A "(9 (.,~/".í.'., ~--------~_--_._L-~--__,__,____"_..______.___._.(J'r.~~.--'-"---'."---'---"---"'.- ,._~-_.,-_.__,_._._~...,._"__.. .....~~\,. "'°11 Field PRUDHOE BAY ~ ---~-_.._~--'--_._-------,._---,--_._--_.~-----,-- z ~ Country USA o ~ ß 1535 FNL 1031 FEL ~ SEC 19, T_~lN,~~~_________,_________ ~ ~I Y=5,959.683.00 X=664.353.00 æ ~ API 50-029-20819-01 OTHER SERVICES -----.------- Permanent Datum : MEAN SEA LEVEL Log Meas. From RKB Drlg. Meas. From: RKB Elev.: 0.00 ft ----- 72.90 ft Ab.Perm.Dat. Elev. KB 72.90 OF 71.40 GL 37.70 WD 0.00 -.----- Borehole Record Size ! From I To (in) I (ft TVD) (ft TVD) 8.500 7772 I 9028 ~-=}J=-OOO -1--- 9028:- 9039 ! I _. ____ Casing Record I End Inc. Size Weight, From: To ! (deg) (in) (lb/ft): (ft TVO) i (ft TVO) i 81. 2 13.375 72.0 -+__ _._._º--'____2_6_~_.. L___~~ ~62~_~__47 :_~_.~______ ___-º___~--n-!~-~,-- : 7.000' 29.0 7660, 9028 ---~-----_... -~- ..---- --. --------------- --. ----------~---¡- -r-----.--'..-------------- .'--- -~ (:;)( AlMa L__. MPT SYSTEM --.J ..... w u.. w' ':;t a: z 0, ¡:' ~, I ~i t:. 0 Z[, ~I >< z ~¡ WI ~ <->, ~i g : .. : .. ! >- ~ CD UJ o J: ~ § (j'J' a:: :::> Cl.. cry O· ~I ~' u... 0") , ~1 ~, () 1 ~ ~. e >, t, el I ß, ('J, e! 0-, :J ~ ~t g! ~I §I :;j1 0' ~: ()' i.L:! .....1 ()! ä: 1 INA~~ MD DGR IlL"AL GA:\I:\lA HA \" EWR4 ELECTROlVIAG~ETIC \V A VE RESISTIVITY IIOHIZOXTAL PRESE~TATI():\ REPEAT SECTIO:\S 01 ~' Con1fJ~U1Y HP EXPLOHATH):\'ì(,,\LASKA I. I \C. _._._.-~,-,-_._..-.. .. .....-.,.-...,.. ',,- --'....- ...."", ~ x:: (j'J ~ ...J ~ /.... DOYO~ 14 Rig l I ...... i,"" .11...... (.·:-25.A /",( '. /.) . I\. . '.0 -;-I~-~~-;l-O ~ -;;;)"'l,1>" l,~!;b' _.- .......--.....- _.......... ._................... . ....I;¡'('\l ... '.~,.:........ ~~~J,' ;tJ,."~ ~ ··~.fh -- -. '.-.-" ",.,,_..~-... Well -... -_._.",...~._. .._-_._.. Field ;1: - .---. --, ___,_._.u_.. Country USA 811535 FNL 1031 FEL ~: SEC 19, T11N, R14E I- 1-..........-..-...........---.-...---.---.----........... ..... ..- . ð, Y=5,959,683.00 X=664,353.00 31 API 50-029-20819-01 OTHER SERVICES ...._. _.......-.' -- . Permanent Datum: MEAN SEA LEVEL Elev.: 0.00 ft -..--.,--.--------,. Log Meas. From ~~~____..____,_____..______?~.?Q_ ft Ab. Perm. Dat . Drly. Meas. From: RKB Elev. KB 72.90 OF 71.40 GL 37.70 WD 0.00 .._--_._._~- ._---~--_._----. Casing Size Weight (in) (lb/ft) 13.375 72.0 . __ n... .."'_~""_ ______ _.____...._ 9.625 47.0 . - ·t~ _._ - ~. . . .. 7.000 29.0 Borehole Record Size From To I End Inc. (in) (ft MD) (ft MD) (de g) 8.500: 8731 10382 81.2 _. ._._~.- ....---.....-.--.----....-------.---- -------.----...... --- ,_. .-'--.-'" ---- 6.000 10382 11601 90.1 . - - ...__. ._n.. _ .._..__........._ Record From (ft MD) o o 8582 To (ft MD) 2640 8729 10382 -.----.-.. . -...-.- ..-.,--...---.---- --~-_.._--+-. -.- ..----.--. -. -. --. .-----..---. -.. ..... -- - --. --.- ~ .,.. ~.-.. ..._~.__.- -_.,._._----..¡._._._~_._.- '--'- ._._---~_._.._-- .--- ~-.. ......... - --.- --- _._--_._.~- -. _..~. . .- ~ . ..--. -..-.- --- - --.--- - - - - .. ..-.- - --- ,-.-. ..- - -- ------ -----. -~- -- .. . _,n_ __. ..____.____ -L-------..---,-I--.-------...,-----..---..-....,-,.:.....-------- -----'---.,--.,- --"..,,-.. --- . --'-" "._---"._-~-,- ----,--------~----~_.._._.__...---",._---,,--<-._..,-~_.--_.-._--- ---_._._--~------------------_._-- Î I" ï II I Casing Record Weight From I To I (lb/ft) (ft TVD) I (ft TVD) 72.0 0 2640 I 47.0 O! 7770 29.0 _766_º-_l_=-- 9028 Size (in) 13.375 9.625 7.000 G.' ~--,_.- -.-----,--,--....--- Size From To End Inc. (in) ¡ (ft TVD) (ft TVD) (deg) 8.500 7772 9028 81.2 ----~--- 6.000: 9028 9039 90.1 Borehole Record ----------.-.----.--.-......---.-."-.-..-- Field·,';:'¡j"'/ . ¡i :,,':""P~:q:pHOE BAY <;t ____.___..-.::...__,'.. ' .' . . .1 ,'''. _____._.______________..__...______.___....____. ... " z ".,'.,..., ~ Cbµnh~i& ....j: "'{)SA . o \....." ,_~: J: i" "'....c. '. ,;( ~.~ I~ ~ ~ I 1535 FNL '·"lö§i,iFEL ~i SEC 19, T11N, R14E ðl Y=5,959,683.00 X=664,353.00' 51 API 50-029-20819-01 MEAN SEA LEVEL Elev.: 0.00 ft RKB 72.90 ft Ab.Perm.Dat. RK8 Elev. KB 72.90 OF 71.40 GL 37.70 WD 0.00 ---.------- Permanent Datum : Log Meas. From Drlg. Meas~.._ From: <5 ~ <:( ~I :5i W ~! ...I' 1.1.I: q zr u.. ' 0:: 91 >- ;;;1 ~ 1-1 <:( <:(1 i:O 0' w :1 ¡: êl 0 :1 $ §¡ :t <:( <:ti 0 LO ::::> (,) N ~I 0: w Ü Q.I Q. !;£!! (j) I:Q¡ '1 t: >, >1 ~I ~I 0 ¡ :+:; "0 I1J =1 :) (jj u '1)' ~I 0' 0 $:1 <.>1 ü: ...I <.> OTHER SERVICES JI'WëHfl,rl'<) ---------"..-.._-~_._,-_.._~_._._-,_.--,-_._._-..._-_.~---_.,.-._.~-_..._~_..._---_._-......_...__.._.., .........".',...... -,_..."..........." .-.,....--...,.", Company : BP EXPLORATION (ALASKA), INC. DUAL GAMMA RAY COMPENSATED NEUTRON POROSITY DGR CN0 ( Ill..·.··.'·'·: , ( :¡: ;! ,._"'_~_~__.__.._,__~~~NOJI -~-,,---,-,_._,_.,-'.-.,.-...- .-... ,-----_.. ",--.,.-,. ---.--_...._-.. - ..--.-..----- 7560 9028 ..-- ----~ -'.----_..- Record From To (ft TVD) : (ft TVO) o 2640 o u ". . '--1170·--- Elev, KB 72.90 OF 71..10 GL 37.70 ~¥D 0.00 OTHER SERVICES --=-~f 29.0 Size (in) 13.375 ". ,-_._._~..._,------- 9.625 7,000 End Inc. Cdeg) 81.2 90.1 Size From To (in) (ft TVO) (ft TVD) 8,500 7772 9028 -, .- S.OOO 9028 9039 47,0 Casing Weight (lb/ft) 72.0 ......",.~...~'OOU~.... Permanent Datum : ; ¡ Log Meas. From : I Or1g. Meas. From: t, L_u___.___.., ! Borehole Record ~ ~:Ot!.ntry a _ ~ ~. 1535 FNL 1031 FEL ~' SEC 19, Tl1N, R14E ð ~'-Y~--5~-9 5 9'~-6 83~OÕ--'-X::66 4, 3S-j'.--ÜÕ··'· :13 I API 50-029-20819-01 MEAN SEA LEVEL Elev.: 0.00 ft ------,-_._.._-_..~------.._....---,--,-- .-----------.-- RKB 72.90 ft Ab.Perm.Dat. ---'--'---'-~--""'- .--.-.-----.--..----".--.- RKB CSA, J¡'ield Well : C-25A C~H11panv : HP ExPt.,{}H,ATION (ALASK/\-}, .... . .,.",.~-,....._",,, ,...,. , ' .' ~:t::~'::;:~:~ } j O-J~j~ J NGP NATURAL GAMMA PROBE DGR DUAL GAMiVIA RAY EVVH.4 El.EC]'ROl\1,AGNETI(: W AVl;~ ;! (;; ~ <,::1. ~ (J) <::( -J <::( _I 1.1.I 1.1.I '1', ¡§I IJ,. &: >- M ~: ¡:: '-1: ;2 <::( 1:'0 ¡:: a: 1.1.I ~, a -.oJ ~ Il. w... ~ <:r >( ~~( ~ LO LO L,1.J ëï: Cr') (.) ('\. 'J? Lr> L..lJ Ü a.. :;) a.. , ~ (J), o:J >-, ~ Õ r:: '" .¡:;, a., ' r:: 1:: ~ ~ (ij , E ::¡ 0 (ij w' 0, 0 ~; 0' w: _J ü· ____________.~,.___"_~_,..._._._~__ ~_n_..···__~__~·.·_.____·~_.. .__.__._._....,..... _. ..-..-.. .-----,,-.,,-.-...-.-..-,,--..----..-..--- -,,---- .-...--..---- --...--.--,.-.--..- "- Casing Record Size Weight From To (in) (lb/ft) I (ft MD)· (ft MD) 13.375 72.0 0 2640 9.625 47 . 0 ··-----~-..8729-- __L:9 0 Q._,~__ 29 . 0___._..__~~=ffi-5?2~~~~~=~}~º}.~~?~=]I ·0 _..' ...._ __,_,,__ __.________ . ._. 0 ..._ _.._._.__._. __..,_._"'.' ... ___.__ _ .__~.__."_____ ____. _ ..____-..________~___.___.___~_____._.__ _._0__· ___'""_'__'__'.'__".'.'"~'__ ___.__ -.---.-..---...--- - . ...--. . _._'"~~______. _4_.____~.___ _. __,_.... _ _ .__ ..___.. _.___" _ _,..___._.__ _ _ __ . . ____.. __.___'__.__ End Inc. (deg) 81. 2 90.1 Size From To (in) (ft MD) (ft MO) 8.500 8731 10382 --- _..__._------~---_._--------~. -- .._------~_._~- --- -- -- 6.000 10382 11601 Borehole Record Elev. KB 72.90 OF 71.40 GL 37.70 yJO 0.00 ___ ---.-___0__- _~... _._~. ._.___~..__...._._._______ Field ::t I_m.._....._.._..,..._,."._._._........ Z ~ I Country : USA o z .. o· 1535 FNL 1031 FEL ~ SEC 19, T11N. R14E ' j- Y = 5, 9 5g-~--683~- 0 O---X~66·4~3-Š3·.'Oõ"------·-"-'" l15: API 50-029-20819-01 MEAN SEA LEVEL Elev.: 0.00 ft ______.._·_R'_____·__~ __ ___.___ ___._ RKB 72.90 ft Ab.Perm.Oat. _______..._..___.__ _____..__._. n _.__~,_.___. .__.__. RKB \IV' ell : (;-25/\ C:onlpany DGR DlJA,.L GAl\,lrVl.A .H..A.)' . EWH.4 EI.~ECTHO~vIAGNETIC WAVE HORIZONTAL PRES11~NTATION H.I~.:PE:A T SECTI()~S ·cpl Permanent Datum : Log Meas. From Dr~g. Meas. From: >- è: õ' c:: to, -g: "C I ~; a. ã: E 0 ãj, u· 0 Q, Ü:' .3 I ~ Ü I 0 ~ « ;¿ if) <:! ...J UJ ~ ..J ~. 2: W ~,¡" æ 0 >- ...- I ¡:: <:t (V) ~, <:( wi ;2 r: a:: WI ....J . 0, -' ' I 0 z' £D' c.. :J: w.. <:t >< 0 U1 U1 W c:r. ;:) (Y) Ü N a.. r./) 0:: ~ .w I. ;:) a.. (/J () w