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Home My WebLink About188-131 Ima ect Well History File' Cover( e XHVZE This page identifies those items that were not scanned during the initial production scanning phase. They are available in the original file, may be scanned during a special rescan activity or are viewable by direct inspection of the file. RESCAN DIGITAL DATA OVERSIZED (Scannable) [3 Color items: [] Diskettes, No. [] Maps: [] Grayscale items: [] Other, No/Type [] Other items scannable by large scanner [] Poor Quality Originals: '~' '""~"'"'"'"'~'Non-Scannable) [] Oth er: , NOTES: Logs of various kinds [] Other BY: BEVERLY BREN VINCENT SHERYL MARIA LOWELL DATE: IS/ Project Proofing BY: BEVERLY BREN VINCENT SHERYL MARIA LOWELl. DATE: Isl Scanning Preparation j~ x 30 = ¢~' + ~.,/ = TOTAL PAGES BY: BEVERLY BREN VINCENT SHERYL MARIA LOWELL DATE: /SI /!! Production Scanning Stagel PAGE COUNT FROM SCANNED FILE: PAGE COUNT MATCHES NUMBER IN SCANNING PREPARATION: YES BY'. BEVERLY BR~HERYL MARIA LOWELL DATE~--"'",~.O..~, Stage 2 IF NO IN STAGE 1, PAGE(S) DISCREPANCIES WERE FOUND: YES BY: BEVERLY BREN VINCENT SHERYL MARIA LOWELL DATE: IS/ (S~N~G ~ COMPLETE AT THIS ~ UN~ SPEC~L A~ENT~N IS REQUIRED ON ~ ~D~UAL PAGE BAS~ DUE TO QU~, G~YS~ NO NO ReScanned (individual page [special attention] scanning completed) RESCANNEDBY~BREN VINCENT SHERYL MARIA LOWELL General Notes or Comments about this file: Quality Checked (done) 10/25/02Rev3NOTScanned.wpd UNSCANNED, OVERSIZED MATERIALS AVAILABLE: ~~~ FILE # _1 ~ iS ~~ (~~'~ ~J ~ ~ To request any/all of the above information, please contact: Alaska Oil & Gas Conservation Commission ~ 333 W. 7th Ave., Ste. 100 Anchorage, Alaska 99501 Voice (907) 279-1433 Fax (907) 276-7542 „ STATE OF ALASKA y~~~~ ALASKA~ AND GAS CONSERVATION COM~ION ~ WELL COMPLETION OR RECOMPLETION REPORT AND LOG /~~ 1 a. Well Status: ^ Oil ^ Gas ^ Plugged ~ Abandoned ~^ Suspended Zawc zs.~os Zawc ss.~,o ^ GINJ ^ WINJ ^ WDSPL ^ WAG ^ Other No. of Completions Zero 1 b. Weil Class: ~ Development ^ Exploratory ^ Service ^ Strati raphic 2. Operator Name: BP E~cploration (Alaska) Inc. 5. Date Comp., Susp., or Aban . 11/13/2008 12. Permit to Drill Number 188-131 ~ 308-320 3. Address: P.O. Box 196612, Anchora e, Alaska 99519-6812 6. Date Spudded 10/31l1988 13. API Number 50-029-21883-00-00~ 4a. Location of Well (Governmental Section): Surface: ' ' 7. Date T.D. Reached 11/24/1988 14. Well Name and Number: PBU Y-25. 1403 FNL, 169 FEL, SEC. 33, T11 N, R13E, UM Top of Productive Horizon: 819' FSL, 4813' FEL, SEC. 28, T11 N, R13E, UM 8• KB (ft above MSL): 78.7' ~ Ground (ft MSL): 49.71' 15. Field / Pool(s): Prudhoe Bay Field / Prudhoe Bay Total Depth: 1295' FSL, 1891' FEL, SEC. 29, T11N, R13E, UM 9. Plug Back Depth (MD+TVD) 13310' 9007' Pool 4b. Location of Well (State Base Plane Coordinates, NAD 27): SurFace: x- 644647 y- 5948850 Zone- ASP4 10. Total Depth (MD+TVD) ~~~$' - ~~' 16. Property Designation: ADL 028288' TPI: x- 639957 y_ 5950983 Zone- ASP4 Total Depth: x- 637590 y- 5951415 Zone- ASP4 11. SSSV De~A(MD+ND) 17. Land Use Permit: 18. Directional Survey ^ Yes ~ No ' r ni n ' in rm i n 19. Water depth, if offshore N/A ft MSL 20. Thickness of Permafrost (TVD): 1900 (Approx.) 21. Logs Obtained (List all logs here and submit electronic and printed information per 20 AAC 25.071): >. GR/RES/DEN-NEU 22. CASING, LINER AND CEMENTING RECORD CASING SETTING DEPTH MD SETTING DEPTH ND f jQ~E ~ v l J AMOUNT Wr. PeR Fr. Gwwe TOP BOTfOM TOP BOTTOM SIZE CEMENTING RECORD PULLED " n r 1' ~ N 1 N „ NT ~ , ~ _ „ ~ " 1 # ~ ~ , ~ 1 " 441 I 23. Open to production or inject ion? ^ Yes ~ No 24. Tus~NC RecoRo If Yes, list each i (MD+~/D of To 8 Bottom; Pe nterval open rforation Size and Number): SIZE ~EPTH .SET MD PACKER .SET MD p ~-~ r~°, ~ ~#, ~-80 ~ o~~ o~ ~ o22a~ MD ND MD TVD Z~J. ACID, FRACTURE, CEMENT SpUEEZE, ETC. DEPTH INTERVAL MD AMOUNT & KIND OF MATERIAL USED .~~ ;~, ~~~, ~ ~ , , ~ t, r'~~ ~ G~ ~ ~ 11550' Set Cement Retainer r`' ~`! ~''~ ~` 11354' PB~A w/ 257 Bbls Cement 11305' Set Whipstock 11305' Downsqueeze (below TOWS), 15 Bbls Cement ZB. PRODUCTION TEST Date First Production: Not on Praduction Method of Operation (Flowing, Gas Lift, etc.): N/A Date of Test: Hours Tested: PROOUCnoN FoR TEST PERIOD OIL-BBL: GAS-MCF: WATER-BBL: CHOKE SIZE: GAS-OIL RATIO: Flow Tubing Press. Casing Press: Cn~cuu~re~ 24-HouR RnTe• OIL-BBL: GAS-MCF: WATER-BBL: OIL GRAVITY-API ~CORR~: Z7. CORE DA7A Conventional Core(s Acquired? ^ Yes ~ No Sidewal l Core s A uired? Yes ~ No If Yes to either question, list formations and intervals cored (MD+ND of top and bottom of each), and summarize lithology and presence of oil, gas or water (submit separate sheets with this form, if needed). Submit detailed descriptions, core chips, photographs and laboratory analytical results per 20 AAC 250.,071. t .lll1C 6 - ; None ///,~~08 ' ~~~~ Form 10-407 Revised 02/2007 CONTINUED ON REVERSE SIDE - ~~..~ .~ ~~,~`~~ ~~~ ~~F~` ~ ~ ?~?J~ ~~~~~~ ~ 28. GEOLJGIC MARKERS ~LIST ALL FORMATIONS ANO RS ENCOUNTERED~: 29. FORMATION TESTS NAME M ND Wel! Tested? ^ Yes ~ No Permafrost Top If yes, list interoals and formations tested, briefly summarizing test results. Attach separate sheets to this form, if needed, and submit Permafro3t Base detailed test information per 20 AAC 25.071. Sag River 10979' None Shublik A 11022' Sadlerochit / Zone 4 11252' Formation at Total Depth (Name): 30. List of Attachments: Summary of Pre-Rig Work and Daily Drilling Reports, WeU Schematic Diagram 31. I hereby certify that the foreg ing is true and correct to the best of my knowledge. '~~ • Signed Terrie Hubble Title Drilling Technologist Date ~ Z"/~ PBU Y-25 188-131 308-320 Prepa~ed ey Namenuumber. Teme Hubble, 564-4628 Well Number i N A ~ DrillingEngineer: MaryEndacott 564-4388 INSTRUCTIONS GeNewu.: This form is designed for submitting a complete and correct well completion report and log on all rypes of lands and leases in Alaska. Submit a well schematic diagram with each 10-407 well completion repoR and 10-404 well sundry report when ihe downhole well design is changed. IreM 1a: Classification of Service Wells: Gas Injection, Water Injection, Water-Altemating-Gas Injection, Sak Water Disposal, Water Supply for Injection, Observation, or Other. Multiple completion is defined as a well producing from more than one pool with production from each pool completely segregated. Each segregated pool is a completion. IreM 4b: TPI (Top of Producing Interval). IreM 8: The Kelly Bushing and Ground Level elevation in feet above mean sea level. Use same as reference for depth measurements given in other spaces on this form and in any attachments. ITeM 73: The API number reported to AOGCC must be 14 digits (ex: 50-029-20123-00-00). IreM 20: Report true veRical thickness of permafrost in Box 20. Provide MD and ND for the top and base of permafrost in Box 28. I~~r 22: Attached supplemental records for this well should show the details of any multiple stage cementing and the location of the cementing tool. IreM 23: If this well is completed for separate production ftom 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 separatety produced, showing the data peRinent to such interval). IreM 26: Method of Operation: Flowing, Gas Lift, Rod Pump, Hydraulic Pump, Submersible, Water Injection, Gas Injection, Shut-In, or Other (explain). IreM 27: Provide a listing of intervals cored and the corresponding formations, and a brief description in this box. Submit detailed description and analytical laboratory infonnation required by 20 AAC 25.07L ITe~w 29: Provide a listing of intervals tested and the corresponding formation, and a brief summary in this box. Submit detailed test and analytical laboratory information required by 20 AAC 25.07L Form 10-407 Revised 02/2007 Submit Original Oniy • • Y-25, Well History (Pre Rig Sidetrack) Date Summary 8/16/2008 T/I/0= SSV/230/120. Temp= SI. OA FL (pre-MITOA). AL shut-in C~ casing valve w/ 0 psi. OA FL near surface. 8/18/2008 T/I/0= 400/260/80 Temp= S/I MIT OA FAILED to 2000 psi. (PRE CTD SCREENING) Pumped 30 bbis crude ~total) to establish LLR = 2 bpm @ 1200 psi for a steady 22 bbls without change. Bled back 1 bbl crude. Final WHP's= 400/260/240. Operator notified of valves Swab = closed, Wing - closed, SSV = closed, Master = open, IA & OA open to gauges on departure. 9/14/2008 WELL S/I ON ARRIVAL. PULLED 5-1/2" PX PLUG FROM 10147' MD. WELL LEFT S/I, NOTIFIED DSO. 9/15/2008 Rig up, perform BOP test. RIH w/ Baker left handed motor & 4.55" parabolic mill to mill XN C~ 10314'. Drifted to 11600' with 4.55" mill. RIH w/ 4.13" cement retainer, set at 11550' correlated to X nipple depth. POOH, Lay down setting tools. 9/16/2008 RIH with Baker stinger and sting in retainer, Inject 2.1 bpm at 2920 psi. Pumped 257 bbls cement. unstung from retainer, picked up hole and got stuck at 11475' bottom perfs. Pumped 7/8" disconnect ball and disconnected at 5500 psi, came free. ,POOH leaving centralizer 4.45" OD weight bar & cross over & stinger, OAL of fish - 11.61', top of fish at 11481'. MU & RIH 4.55" OD Mill. 9/17/2008 9/18/2008 9/28/2008 10/25/2008 10/26/2008 10/29/2008 11 /1 /2008 11 /11 /2008 Continue RIH with 4.55" mill to 11430'. POOH, lay down milling assembly and MU dummy whipstock. Drift with 3.625" OD x 19.33' Baker dummv whipstock assembiv. Drift cleanlv to a hard tap at 11354' ctmd; unable to drift past. No weight bobbles encountered above 11354' ctmd. Confirm with ODE that this depth is sufficient. Pull to surface and freeze protect wellbore to 2500' with 50/50 methanol/water. RU for weekly BOP test. Perform weekly BOP test. RDMO. Job Complete. T/I/0=vac/0/250. Set 6" CIW J BPV. Pre Nordic 2. T/IA/OA= SSV/0/200 Temp= cold PPPOT-T (PASS) PPPOT-IC (PASS) (Pre CTD) PPPOT-T RU 1 HP BT onto THA test void, 200 psi to 0 psi, flushed void through SBS until clean returns achieved. Pressure void to 5000 psi for 30 minute test, 5000/ 15 minutes, 4950/ 30 minutes. Bled void to 0 psi. Did not cycle or torque LDS "Standard" all were in good visual condition. RD test equipment re- installed Alemite cap. PPPOT-IC RU 1 HP BT onto IC test void, 50 psi to 0 psi, flushed void through SBS until clean returns achieved. Pressure void to 3500 psi for 30 minute test, 3450/ 15 minutes, 3450/ 30 minutes. Bleed void to 0 psi. Did not cycle or torque LDS "Standard" all were in good visual condition. RD test equipment re-installed Alemite cap. Tree test pre CTD, Swab valve had a 200 psi loss in 5 min. going down, Master valve going down, swab valve going up and wing valve going out, had a 250 psi loss in 5 min. Advised WSL of pressure test results. T/I/O = BPV/Vac/160. Temp = SI. Monitor WHP. No wellhouse, well demobed. IA & OA have companion valves. Did not check SV or WV postioin due to no hand rails on tree platform. SSV, MV = closed. IA, OA = OTG. NOVP. T/I/0= 0/0/250; Set 2" VR Plug thru I/A Valve on left side of tree and installed 2-1/16" Valve on existing Valve on right side of tree for Nordic 2. Complete. T/I/O = Vac/0/0 Pulled 6-3/8 " CIW "J" BPV C~ 108". 4-5' ext. used for Nordic 2 to circulate. Page 1 of 1 i~ • • Legal Well Name: Y-25 Common Well Name: Y-25 Event Name: REENTER+COMPLETE Contractor Name: NORDIC CALISTA Rig Name: NORDIC 2 _ ~ _ I I_:. i_ . I 11/11/2008 01:00 - 02:00 1.00 MOB P 02:00 - 02:15 025 MOB P 02:15 - 03:00 0.75 MOB P 03:00 - 03:30 0.50 MOB P 03:30 - 04:30 1.00 MOB P 04:30 - 07:00 2.50 MOB P 07:00 - 10:00 3.00 BOPSU P 10:00 - 15:00 5.00 BOPSU P 15:00 - 17:45 ~ 2.75 ~ BOPSUF~ P 17:45 - 18:15 0.50 RIGU P 18:15 - 20:45 2.50 RIGU P 20:45 - 22:05 1.33 RIGU P 22:05 - 22:50 0.75 BOPSU P 22:50 - 23:45 0.92 RIGU P 23:45 - 00:00 I 0.25 ~ STW HIP ~ P 11/12/2008 00:00 - 02:00 2.00 STWHIP P 02:00 - 02:30 0.50 STWHIP P 02:30 - 03:30 1.00 STWHIP P 03:30 - 06:00 2.50 STWHIP P 06:00 - 06:30 0.50 STWHIP N 06:30 - 09:30 3.00 STWHIP N 09:30 - 10:30 1.00 STWHIP N 10:30 - 13:30 I 3.001 STWHIP~N 13:30 - 15:00 1.50 STWHIP N 15:00 - 15:30 0.50 STWHIP N 15:30 - 17:40 2.17 ST'VNHIP N 17:40 - 19:15 1.58 STVIIHIP P Spud Date: 10/29/1988 Start: 11 /11 /2008 End: 12/4/2008 Rig Release: Rig Number: NPT Phase Description of Opera~ions PRE Continue to prep rig for move. PRE PJSM - for pulling rig off of well Y-05B and moving down the pad to Y-25 PRE Move rig from Y-05B to Y-25. PRE PJSM for moving rig over Y-25 PRE Spot rig over Y-25 Rig accept at 0430 hrs PRE Berm cellar. Spot external ta~ks and misc equipment. Continue to prep replacement reel for use. PRE Nu 7-1/16" BOPs. RD, move, spot and RU flow back tank. PRE Perform initial BOP test as per AOGCC regs, PTD 2081400, and approved CTD plan. Test witnessed by AOGCC inspector J. Crisp. Test result data documented on AOGCC form and transmitted via e-mail to the AOGCC office in Anchorage. PRE Hold PJSM. RU DSM lubricator. PT to 1000 psi. Well on a vac. RD DSM lubricator. PRE Crew change/safety mtg PRE Install internal grapple into CT and PT. Pull CT to floor and stab into injector. Replace packoff. Meg test line PRE Rev fili CT w/ KCI 1.4/400, then pump slack back w/ second circ PRE Pressure test inner reel valve and packoff as part of BOP test. Blow down kill line and CT PRE RU hydraulic cutter and cut off 152' of CT (which is 1.04% slack) leaving 14343' w/ 354k RF . Pump slack forward to bung hole until wire exited WEXIT MU CTC. PT 35k WEXIT Head up BHI UQC. PT CTC ~ 4000 psi WEXIT Pump slack forward 3.0/2250 Safery mtg re: MU BHA WEXIT MU 5-1/2" WS + MWD ass WEXIT RIH w/ BHA #1 circ KCI thru EDC 0.85/220 while take MeOH returns to tiger tank. RIH to 10294' CTD DFAL WEXIT Problems communicating with BHA. Trouble shoot from surface. Suspect e-line has a problem. DFAL WEXIT Pull out of hole. Hold BHA PJSM. DFAL W EXIT Get off well. Unstab coil. E-line had pulled out of e-connector. E-line end was just above coilconnector, but pulled out from anchor. DFAL WEXIT RU to pump slack and cut additional coil. Cut 6' of coil. Found e-line. RU and pump slack back again. Cut 140' of additionai coil. DFAL WEXIT Re-head e-coil. Electrical, pressure & pull tests good. DFAL WEXIT Stab coil. Test MWD tools. Get on well. DFAL WEXIT Run in hole with BTT 5-1/2" whi stock circ KCI thru EDC 0.6/100 WEXIT Log GR tie-in down from 10980'. Corr +2' to PDC log Log CCL tie-in down from 10850' and find collars on depth to ~ ~ BP EXPLORATION Page 2 of 19 Operations Summary Report Legal Well Name: Y-25 Common Well Name: Y-25 Spud Date: 10/29/1988 Event Name: REENTER+COMPLETE Start: 11/11/2008 End: 12/4/2008 Contractor Name: NORDIC CALISTA Rig Release: Rig Name: NORDIC 2 Rig Number: Date From - To Hours Task Code NPT Phase Description of Operations 11/12/2008 17:40 - 19:15 1.58 STWHIP P WEXIT PDC log 19:15 - 19:30 0.25 STWHIP P WEXIT Park w/ BOWS at 11317' w/ TF 30L. 47.5k, 26k Close EDC. Pressure up and tool stroked at 3200 psi while setting WS. Stack 4k wob. PUH 46.3k PVT 228 Prelimina settin de ths TOWS 11 05' RA 11 14' 19:30 - 21:45 2.25 STWHIP P WEXIT POH w/ setting tool 21:45 - 23:10 1.42 STWHIP P WEXIT LD setting tool. LD MWD assy Change out packoff RU nozzle assy MIRU SWS cementers 23:10 - 00:00 0.83 ZONISO P WEXIT RIH circ KCI thru nozzle 1.0/320 11/13/2008 00:00 - 01:15 125 ZONISO P WEXIT Finish RIH circ KCI thru nozzle 1.1/355 losing -0.1 bpm w/ 8.7 ECD Safety mtg re: pump cement 01:15 - 01:30 025 ZONISO P WEXIT Ta at 11317' CTD corr to 11305'. PUH 50.5k w/ 3k OP IA 325 Park at 11285' while cementers finish batch up and circ biozan to reel 01:30 - 02:10 0.67 ZONISO P WEXIT SWS pump 2 bbls FW to reel. PT 4000. SWS load CT w/ 15 bbls 15 8 ppq 'G' cement at 80F and 0.8/500 (had poor prime Cement had 90 cc FL w/ 5:32 TT. IA 352 02:10 - 02:35 0.42 ZONISO P WEXIT Rig displace w/ 38 bbls biozan at 1.96/1.86/430 followed by 1% KCI IA 410 02:35 - 02:50 0.25 ZONISO P WEXIT Red rate to 1.0/200 w/ cement at noz. POH 30'/min 552k from 11290' leavina cement in 5-1/2" liner to 10650' 02:50 - 03:35 0.75 ZONISO P WEXIT Park at 10382' safety and see 0.52/170 psi w/ full retums, IA=350 psi SI choke and pressure up wellbore system at 0.5 bpm w/ 5.0 bbls to 1000 psi whp and 1320 psi IAP in 10 minutes. SD pump and monitor for 30 min w/ little bleed off after leaking surface equipment was isolated 03:35 - 04:30 0.92 ZONISO P WEXIT Bleed off wellbore ressure while RIH and dilute cement w/ i z 1.0/320 at 40'/min. Tag WS. PUH to 10600'. RIH jetting 2.73/1900 to WS 04:30 - 05:30 1.00 ZONISO P WEXIT POOH 'ettin cement to surface 2.65/2000 and et a fair amount f as back from IA. Take all retums to tiger tank while removing KCI from pits and replacing w/ biozan down the CT. Swap to cuttings box w/ cement at surface 05:30 - 07:00 1.50 ZONISO P WEXIT Slow down pulling speed while investigate elastomers missing from injector 07:00 - 08:15 1.25 ZONISO P WEXIT At surface. Get off well. Change nozzle to swizzle stick. Jet out BOPs. 08:15 - 09:45 1.50 STWHIP N RREP WEXIT Inspect chains. Replace deformed elastomers behind 17 gripper blocks. 09:45 - 10:45 1.00 STWHIP P WEXIT Hold PJSM. MU 4.55" one step HCC window mill with 4.55" diamond strin reamer on 2-7/8 motor. 5 P WEXIT Run in hole. Tag something at 10,346' (probably nipple). ~ p~ . . . PU and ream through same. y-~~ + Tag up in liner at 10,988'. 1840 psi fs at 2.54 bpm iNout. Mill throu h erfs/cmt from 10,988' to 11023'. 16:00 - 16:30 0.50 STWHIP P WEXIT Log GR tie in from 10,980'. Subtract 2' correction. 16:30 - 18:30 2.00 STWHIP P WEXIT Tag pinch point at 11,306.5'. ~ TREE _ ,, 6" CNV WELLHEAD = MCEVOY A2;TUATOR= BAKER K6. ELEV - 78.71' BF. ELEV - 51.21` KOP = 3300' Max Angle = 92 @ 11700' Datum MD = 11000' Datum ND = 8800' SS 13-3/8" CSG, 72#, L-80, ID = 12.347" ~ - ~TD ~it~~~t°r~Gk ~ '~~ Minimum ID = 2.3~" AI sleeve in SELRT 1Q320' Fdole in tubinr abc~ve GL'~9 ~`1 E~C3S ca[iper 2,'25/Q8 10Q78` 3-1;2" TIEB, ~J.2#, STL, 13Cr ID=2.992" ~'~ 10312" 5-1/2" TBG, 17#, L-80, .0232 bpf, ID = 4.892" ~-j 107'I0, TNV TIEBACK SLV 10722~ 9-5/8" X 5-1/2" TNV RP LNR HGR 10734~ 9-5/8" CSG, 47#, NT-80S, ID = 8.681" 10973~ 5 112" ~v hipstock 91305' PERFORATION SUMMARY REF LOG: NL MWD ELMAG WR/GR ON 11/24/88 ANGLE AT TOP PERF: 57 @ 10990' Note: Refer to Production DB for historical perf data SIZE SPF INTERVAL Opn/Sqz DATE 3-3/8" 6 10990 - 11020 C 05/09/95 3-3/8" 6 11230 - 11250 G 2/15-17/96 3-3/8" 6 11260 - 11280 C 2/15-17/96 3-3/8" 6 11296 - 11326 G 2/15-17/96 3-3/8" 6 11330 - 11350 C 2/15-17/96 3-3/8" 6 11370 - 11380 C 2/15-17/96 3-3/8" 6 11380 - 11410 G 01/30/96 3-3/8" 6 11440 - 11460 C 2/15-17/96 3-3/8" 6 11460 - 11490 C 01/30/96 SLT 11614 - 13310 H 9i160H AFEfY NOTES: WELL IXCEEDS 70° @ 11200' & GOES HORIZONTAL @ 11600'. 2097~ ~5-1/2" CAMCA SSSV NIP, ID = 4.562" GAS LIFf MANDREIS ST MD ND DEV TYPE VLV LATCH PORT DATE 6 3386 3382 12 CAM DOME RK 16 02/11/08 5 6013 5388 45 CAM DOME RK 16 02/11/08 4 7973 6813 46 CAM DOME RK 16 02/11/08 3 9302 7744 46 CAM SO RK 24 02/11/08 2 10000 8227 44 CAM DMY RK 0 02/11/99 1 10068 8276 43 CAM DMY RK 0 04/03/04 10147' I-15-~~2" OTIS SLIDING SLEEVE ID = 4.562" 10207' TNV PaR SEAL ASSY 10222~ 9-5/8" X 5-1/2" TNV HBBP PKR, ID = 4.75" 10273~ 5-1/2" OTIS X NIP, ID = 4.562" 10~ 314~ ~--~ 5-1 t2" HES XN NIP, (~ = mflied to 4.55" ~ 10717' 5-1/2" TNV SEAL NIPPLE W/O SEALS 10729~ ELMD 1033$' 3-112" STL X NIF, IL~ = 2.813" 2-718'" LNR ~a.4#, STL 9 3Cr80, ID = 2.441" 'f 1931-13$35 5-1/2" SLTD LNR, 17#, L-80, .0232 bpf, ID = 4.892" DATE REV BY COMMENTS DATE REV BY CAMMENTS 12/70/88 ORIGINAL COMPLETION 03/11/08 CJrUTLH IBP PULLED/PLUG SET 3/1/08 07/14/01 CH/KAK CORRECTIONS 04/02/08 KDGPJC SET WRP (03/13/08) 04/03/04 GJB/KA GLV GO 09/17/08 IMM MILL XN, CNiI" SQZ 04/23/05 JR,4/TLH IBP SET (04/04/05) 12/O8/08 MSE CTD SIDETRACK 09/10/05 KSB/TLH IBP PULLm (06/05/05) 02/11/08 KSB/TLH GLV GO & TVD CORRECTIONS PRUDHOE BAY UNff WELL: Y-25A PERMff No: API No: 50-029-21883-01 SEC 33, T11 N, R13E, 1403' SNL & 169' WEL BP Exploration (Alaska) • • ~.~ ~.. ~ ~ ~ tt ,! ~ ~'~'' f ~_ ' ~VV ~' ~ {~~'`` ~~~' s ,/ SARAH PAL/N, GOVERNOR ALASSA OIL A.rTD (~]$ / COI~TSERQATIOI~T Cpj1111Tis510~ ~ 333 W. 7th AVENUE, SUITE 100 ANCHORAGE, ALASKA 99501-3539 ~ PHONE (907) 279-1433 FAX (907) 276-7542 John McMullen Engineering Team Leader BP Exploration Alaska Inc. ~~ $ ~ P ~ :~ 2D0$ PO Box 196612 Anchorage, AK 99519-6612 ~ Q~ ~ ~ 3 Re: Prudhoe Bay Field, Prudhoe Bay Oil Pool, PBU Y-25 Sundry Number: 308-320 Dear Mr. McMullen: Enclosed is the approved Application for Sundry Approval relating to the above referenced well. Please note the conditions of approval set out in the enclosed form. When providing notice for a representative of the Commission to witness any required test, contact the Commission's petroleum field inspector at (907) 659-3607 (pager). As provided in AS 31.05.080, within 20 days after written notice of this decision, or such further time as the Commission grants for good cause shown, a person affected by it may file with the Commission an application for rehearing. A request for rehearing is considered timely if it is received by 4:30 PM on the 23rd day following the date of this letter, or the next working day if the 23rd day falls on a holiday or weekend. A person may not appeal a Commission decision to Superior Court unless rehearing has been requested. Sincerely, ~~ Cathy P. Foerster Commissioner DATED this D_ day of September, 2008 Encl. $~ STATE OF ALASKA 1~`S ~ ~ ~ ~ O ALAS IL AND GAS CONSERVi4T10N COMMISSIZ7N 8 SEP 0 4 20Q i APPLICATION FOR SUNDRY APPROVAL ~ ~~. 1. Type of Request: ® andon i ^ Suspend ^ Operation Shutdown ^ Perforate ^ Time Extension ~~!i~~;{3i`,3~5£ Iter Casing ^ Repair Well ^ Plug Perforations ^ Stimulate ^ Re-Enter Suspended Well ^ Change Approved Program ^ Pull Tubing ^ Pertorate New Pool ^ Waiver ^ Other 2. Operator Name: BP Exploration Alaska) Inc. 4. Current Well Class: ®Development~ ^ Exploratory 5. Permit To Drill Number 188-131 - 3. Address: P.O. Box 196612, Anchorage, Alaska 99519-6612 ^ Service ^ Stratigraphic 6. API Number: 50-029-21883-00-00 7. If perforating, closest approach in pool(s) opened by this operation to nearest property line where ownership or landownership changes: Spacing Exception Required? ^ Yes ®No 8. Well Name and Number: PBU Y-25 9. Property Designation: ADL 028288 ' 10. KB Elevation (ft): 78.7' ~ 11. Field /Pool(s): Prudhoe Bay Field / Prudhoe Bay Pool 12• PRESENT WELL CONDITION SUM MARY Total Depth MD (ft): 13418' ~ Total Depth TVD (ft): 9006' ~ Effective Depth MD (ft): 13310' Effective Depth TVD (ft): 900T Plugs (measured): 1014T Junk (measured): Yes, Unknown Depth /" 4 Perforation Depth MD (ft): Below Plup: 10990' -13310' Perforation Depth TVD (ft): 8873' - 9007' Tubing Size: S-1/2", 17# Tubing Grade: L-80 Tubing MD (ft): 10710' Packers and SSSV Type: 9-5/8" x 5-1/2" TIW'HBBP' packer Packers and SSSV MD (ft): 10222' 13. Attachments: ® Description Summary of Proposal ^ BOP Sketch ^ Detailed O erations Pro ram 14. Well Class after proposed work: ^ Exploratory ®Development ^ Service 15. Estimated Date for Commencin O rations: Se tember 11, 2008 16. Well Status after proposed work: ^ Oil ^ Gas ^ Plugged ®Abandoned~ 17. Verbal Approval: Date: Commission Re esentative: ^ WAG ^ GINJ ^ WINJ ^ WDSPL 18. I hereby certify that ,fie foregoing is true and correct to the best of my knowledge. Contact Marv Endacott, 564-4388 Printed Name J s .Title Engineering Team Leader ~ePerea ey Narnen~umber: Signatu Phone 564-4711 Date Terrie Hubble, 564-4628 Commission Use On Sundry Number: Con iti s of approval: Notify Commission so that a representative may witness ^ ug Integrity ''BOP Test ^ Mechanical Integrity Test ^ Location Clearance Other: ?~~ O PS ` 'p IF1~ Subsequent Form Required: ~`'~ APPROVED BY ~J„ /~ A roved B ~ COMMISSIONER THE COMMISSION Date f~ Form 10-403 ~~ised~2006 20 AAC 25.280 A12Ska QiE ~ ~~~ ~~ns. C mmssi®n t . _ I~F~.: CEP ~f 9 ZODB Submit In Duplicate .~ ~ To: Tom Maunder Petroleum Engineer Alaska Oil & Gas Conservation Commission From: M.S. Endacott CTD Engineer Date: September 3, 2008 Re: Y-25 Sundry Approval CC: Well File Sondra Stewman/Terrie Hubble Sundry approval is requested to abandon perforations & slotted liner on well Y-25. "~" by Y-25A Objectives: • Establish offtake point to south of current wellbore. Test Zone 4 Section along upthrown side of N-S Down-To-West fault • Assess fluid saturations east of fault. Evaluate P-23i injection conformance and sweep efficiency. • Run 3 1/2" Cr scab liner up across corroded tubing from new production liner top to 6050' (just below GLM#5 in 5 1/2" tbg) • New production liner to position XO/kick-off point for future access to target identified to the west. Well History: Y-25 is a horizontal well drilled in 1988 to a Zone 4 target in the northwest section of the Y Pad area. It has cum'd 4.1 mmbo to date, last tested at 98% we and is currently SI due to Txl communication. The Y-25 wellbore is a 5 '/z" monobore completion. The production liner is cemented and perforated down to 11,579' and slotted liner below that to a TD at 13,418'. Initial production was from the slotted liner section only and started at 6000 bopd. In two years it declined to a steady 1000 bopd at 80% we and 1000 gor. In February 1996 the cemented heel section of the wellbore was perforated (--180') and the rate jumped to 1800 bopd. The increase quickly declined as the we increased to >90%. Gross fluid rate has been consistent but oil rate has been in gradual decline since then. Latest test was 150 bopd at 98% we and 5000 gor. Y-25 was shut in February 2008 for Txl communication. A tubing caliper run 2/5/08 indicated significant line corrosion in the tubing below 8000' and a hole in the tubing at 10,078'. A short tbg patch over the hole was considered but at least 5 other joints have > 50% penetration. An extended tubing patch was considered but the corrosion extends down into the uppermost perfs so there is no place to land the lower packer. Economics for the current low rate, high water cut well will not support a stand alone RWO. A CMIT-Txl to 2500 psi passed on 6-18-08 confirming production casing integrity. Proposed Lateral This CTD sidetrack will isolate the slotted liner section in the parent well and be completed with a cemented/perforated production liner. The liner will include a CTD Tiny Tool (TT) kick-off point that will allow future access to a target that has been identified further to the west. A scab liner will be run from the top of the production liner to 6050' Qust below GLM#5 in the 5 '/z" tbg). This will cover the corroded tubing, enable hydraulic efficiency and restore wellbore integrity. Recoverable reserves are estimated at 824 MBO. Any remaining reserves in the parent well are expected to be recovered in the new lateral. • Pre-Rig Work Summary: (Scheduled to begin on September 11, 2008) 1. Passed CMIT 2. Mill XN ~ 10314' to 4.55" (pending mill availability) 3. Drift for 5-1 /2" cement retainer to 11,600', set retainer+++ 0111,550' (in blank pipe) 4. Squeeze long slotted liner with --130bbbl cement +++Cement retainer may not set in corroded pipe, if so, then lay in cement 5. Drift for 5-1/2" monobore whipstock Baker permanent, special 4.55" tray to 11,400' Rig Sidetrack Operations: (Scheduled to begin on October 15, 2008 using Nordic rig 2 1. MIRU ~, ~~ ~ J 2. NU 7-1/16" CT Drilling BOPE and test -~c7 35~C7 QS 3. Set Baker permanent 5'/z" whipstock at 11,300' Y. /VYYI IJUUGGLC ^' 1 JUUI 1 J.000U 1.C111C1 IL 5. Mill 4.55" window 6. Drill lateral with 4.5" bit 7. Run and cement a 3-1/2" x 2-7/8" 13Cr liner string, cement with 45bb1 8. Clean out and CCVCNL 9. Perforate well 10. Run 3-1 /2" 13Cr tieback to isolate hole in tubing, LTP to 6050' 11. FP, Set BPV. ND 7-1/16" stack. FP tree and PT tree cap 12. RDMO Post-Rig Work: 1. Pull BPV. 2. Re-install well house and FLs 3. Run gas lift design 4. RU test separator, flow test well. 1000' of Perforations JVELLHEAD ~ MCEVOY ~I 4CTUATOR= BAKER 46. ELEV = 78.71' 3F. ELEV = 51.21' 40P _ __ 3300' flax Angle = 92 @ 11700' datum MD = 11000' datum TVD = 8800' SS ~ 13-3/8" CSG, 72#, L-80, ID = 12.347" ~ Y-2 5 51200 &NGOF~ HORIZONTAL @ 11600'. 2097 H 5-1 /2" CAMCO SSSV NIP, ID = 4.562" Minimum ID = 4.455" @ 10314' 5-1 /2" HES XN NIPPLE GAS LIFT MAND RELS 3T MD TVD DEV TYPE VLV LATCH 6 3386 3382 12 CAM DOME RK 5 6013 5388 45 CAM DOME RK 4 7973 6813 46 CAM DOME RK 3 9302 7744 46 CAM SO RK 2 10000 8227 44 CAM DMY RK 1 10068 8276 43 CAM DMY RK DRT DATE 16 02/11/0! 16 02/11/0! 16 02/11/0! 24 02/11/02 0 02/11/95 0 04/03/0 10147' x'15-1/2" OTIS SLIDING SLEEVE ID = 4.562" 10147' 5-1/2" PX PLUG (06/16/08) 10207' --~TNV PBR SEAL ASSY~ 10222' H 9-5/8" X 5-1/2" TNV HBBP PKR, ID = 4.75" 10273' 5-1/2" OTIS X NIP, ID = 4.562" I5-1/2" TBG, 17#, L-80, .0232 bpf, ID = 4.892" I ~TNV TIEBACK SLV 9-5/8" X 5-1/2" TNV RP LNR HGR 9-5/8" CSG, 47#, NT-80S, ID = 8.681" PERFORATION SUMMARY REF LOG: NL MWD ELMAG WR/GR ON 11/24/88 ANGLE AT TOP PERF: 57 @ 10990' Note: Refer to Production DB for historical perf data SIZE SPF INTERVAL Opn/Sqz DATE 3-3/8" 6 10990 - 11020 C 05/09!95 3-3/8" 6 11230 - 11250 G 2115-17196 3-3/8" 6 11260 - 11280 C 2/15-17/96 3-3/8" 6 11296 - 11326 C 2115-17/96 3-3/8" 6 11330 - 11350 C 2/15-17/96 3-3/8" 6 11370 - 11380 C 2/15-17196 3-3/8" 6 11380-11410 C 01/30/96 3-3/8" 6 11440 - 11460 C 2/15-17/96 3-3/8" 6 11460 - 11490 C 01/30/96 SLT 11614 - 13310 C 12/06/88 .` ~` C ~ ~~ ~~ ~ ~~ ~ ~ I .` DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNff 12/10/88 ORIGINAL COMPLETION 03/11/08 CJN/TLH IBP PULLED/PLUG SET 3/1/08 WELL: Y-25 07/14/01 CH/KAK CORRECTIONS 04/02/08 KDC/PJC SET WRP (03/13/08) PERMIT No: 1881310 04/03/04 GJB/KA GLV C/O 06/28/08 BSE/SV PXN PULL (03/12/08) API No: 50-029-21883-00 04/23/05 JRA/TLH IBP SET (04/04/05) 06/28/08 BSEISV SET PX /WRP PULLED (06/16/0 8) SEC 33, T11 N, R13E, 1403' SNL & 169' WEL 09/10/05 KSB/TLH IBP PULLED (06/05105) 07/01/08 PJC DRAWING CORRECTIONS 02/11/08 KSB/TLH GLV C/O & TVD CORRECTIONS BP Exploration (Alaska) 5-1/2" HES XN NIP,ID = 4.455" 10717' -i 5-1/2" TM/ SEAL NIPPLE W/O SEALS 10729' ELMD ? I-i FISH: WRP ELEMENTS (06/16/08) 11575 I-I5-1/2" LNR, 17#, L-80, .0232 bpf, ID = 11579 I--I CTC EXT CSG PKR TREE = 6" CNV WELLhEA'D = MCEVOY ACTUATOR= BAKER KB. ELEV = 78 .71' BF. ELEV = _ 51.21' KOP = 3300' Max Angle = 92 @ 11700' Datum MD = 11000' Datum TV D = 8800' SS -2 5 A SAFETY NOTES: WELL EXCEEDS 70° @ 11200' 8 GOES HORIZONTAL @ 11600'. Proposed CTD Sidetrack O ~ 13-3/8" CSG, 72#, L-80, ID = 12.347" ~ 6050' top 3-1/2" 13G tie back 5-1/2 x 3-1/2" WFD ER PKR Minimum ID = 5-1/2" TBG, 17#, L-80, .0232 bpf, ID = 4.892" ~ 10710' TNV TIEBACK SLV 10722' 9-5/8" X 5-1/2" TNV RP LNR HGR 10734 9-5/8" CSG, 47#, NT-80S, ID = 8.681" 10973 5 1/2" monobore w hipstock 11300' 5 1/2" cement retainer 11550' PERFORATION SUMMARY REF LOG: NL MWD ELMAG WR/GR ON 11/24/88 ANGLEATTOPPERF: 57 @ 10990' Note: Refer to Production DB for historical pert data SIZE SPF INTERVAL Opn/Sqz DATE 3-3/8" 6 10990 - 11020 C 05/09/95 3-3/8" 6 11230 - 11250 C 2/15-17/96 3-3/8" 6 11260-11280 C 2/15-17/96 3-3/8" 6 11296 - 11326 C 2/15-17/96 3-3/8" 6 11330 - 11350 C 2/15-17/96 3-3/8" 6 11370 - 11380 C 2/15-17/96 3-3/8" 6 11380 - 11410 C 01 /30/96 3-3/8" 6 11440 - 11460 C 2/15-17/96 3-3/8" 6 11460 - 11490 C 01 /30/96 SLT 11614 - 13310 C 12/06/88 i 5-1/2" CAMCO SSSV NIP, ID = 4.562" i c;a S i i~r nna rvnR~ c ST MD TVD DEV TYPE VLV LATCH PORT DATE 6 3386 3382 12 CAM DOME RK 16 02/11/08 5 6013 5388 45 CAM DOME RK 16 02/11/08 4 7973 6813 46 CAM DOME RK 16 02/11/08 3 9302 7744 46 CAM SO RK 24 02/11/08 2 10000 8227 44 CAM DMY RK 0 02/11/99 1 10068 8276 43 CAM DMY RK 0 04/03/04 10147, I -~ 5-1 /2" OTIS SLIDING SLEEV E ID = 4.562" 10207' TNV PBR SEAL ASSY 10222' 9-518" X 5-1/2" TNV HBBP PKR ID = 4.75" 10273' 5-1/2" OTIS X NIP, ID = 4.562" 10280' TOP3-1/2" x 2-7/8" LINER 10314' 5-1/2" HES XN NIP, ID =milted to 4.55" 10717' 5-1/2" TNV SEAL NIPPLE W/O SEALS 10729' ELMD ~3-1/2" x 2-7/8" 13Cr Liner, Cemented & Perf'd XO 12600' ~ CTC EXT CSG PKR ~ 15-1/2" SLTD LNR, 17#, L-80, .0232 bpf, ID = 4.892" DATE REV BY COMMENTS DATE REV BY COMMENTS 12/10/88 ORIGINAL COMPLETION 03/11/08 CJN/TLH IBP PULLED/PLUG SET3/1/08 07/14/01 CWKAK CORRECTIONS 04/02/08 KDGPJC SET WRP (03/13/08) 04/03/04 GJB/KA GLV GO 09/03/08 MSE PROPOSED CTD SIDETRACK 04/23/05 JRA/TLH IBP SET (04/04/05) 09/10/05 KSB/TLH IBP PULLED (06/05/05) 02/11/08 KSB/TLH GLV GO 8<TVD CORRECTIONS 13787' y~ PBTD 13740' 5-1/2" LNR, 17#, L-80, .0232 bpf, ID = 4.892" FISH: IBP BANDS (8) 8 2" OF FISH NECK (02/28/08) ' ~ PBTD PRUDHOE BAY UNfr WELL: Y-25A PERMIT No: API No: 50-029-21883-01 SEC 33, T11 N, R13E, 1403' SNL & 169' WEL BP Exploration (Alaska) Schlumberger Alaska Data & Consulting Services 2525 Gambell Street, Suite 400 Anchorage, AK 99503-2838 ATTN: Beth Well MPC-41 MPG-05 MPL-33 P-06A DS 02-25 D.~. 09-10 B-20 Y-25 PSI-10 P-26 02-14A F-12 04-35 t5-09A 15-09A 5-09A ". J-13 D.S. 09-29 BP Exploration (Alaska) Inc. Petrotechnical Data Center LR2-1 900 E. Benson Blvd. Anchorage, Alaska 99508 Date Delivered: Job# 10889195 10715440 11058514 11132061 10987525 11058237 10980591 10928605 10715447 10928634 11075901 NA 10889172 10889183 NA 10919942 10877750 10980596 ~NE') OCT 3 12005 Log Description SBH SURVEY MPSP INJECTION PROFILE INJECTION PROFILE LDL INJECTION PROFILE INJECTION PROFILE t>...~ r \t ~ ~ LDL MEM PPROF W/DEFT MPSP IPROF & WARMABACK MEM PPROF W/DEFT MEM PPROF & IPROF LDL SBHP SURVEY OIL PHASE BOTTOM HOLE SAMPLE OIL PHASE BOTTOM HOLE SAMPLE OIL PHASE BOTTOM HOLE SAMPLE LDL PPROF W/DEFT c o&-~~- Date 12/24/04 11/09/04 06/03/05 10/12/05 06/24/05 08/16/05 08/05/05 11/20/04 01/01/05 06/02/05 07/09/05 06/03/05 10/10/04 11/04/04 02/02/05 02/13/05 06/29/04 08/10/05 NO. 3503 Company: State of Alaska Alaska Oil & Gas Cons Comm AUn: Helen Warman 333 West 7th Ave, Suite 100 Anchorage, AK 99501 Field: Prudhoe Bay BL 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Color CD Alaska Data & Consulting Services 2525 Gambell Street, Suite 40 Anchorage, AK 99503- 8 A TTN: Beth Received by: 10/18/05 -- 'ðJ ' ~l f gJ--t3:1 ~1~ 1. Operations performed: I'%r' ~,r" I V r- LJ STATE OF ALASKA '- JUN 2 8 2001 ALASKA OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATION o, &,Sjj, Operation shutdown_ Stimulate _X Plugging _ Perforate'_' ....... Acid/Scale Inhibitor Pull tubing _ Alter casing _ Repair well _ Other_X 2. Name of Operator BP Exploration (Alaska), Inc. 3. Address P. O. Box 196612 Anchorage, AK 99519-6612 4. Location of well at surface 1402' FNL, 169' FEL, Sec. 33, T11N, R13E, UM At top of productive interval 4403' FNL, 5057' FEL, Sec. 28, T11 N, R13E, UM At effective depth 1111' FSL, 1090' FEL, Sec. 29, T11N, R13E, UM At total depth 1294' FSL, 1891' FEL, Sec. 29, T11N, R13E, UM 5. Type of Well: Development __X Explorato~__ Stratigraphic__ Service__ (asp'$ 644647, 5948850) (asp's n/a) (asp's638394, 5951247) (asp's 637588, 5951416) 6. Datum elevation (DF or KB feet) RKB 79 feet 7. Unit or Property name Prudhoe Bay Unit 8. Well number Y-25 9. Permit number / approval number 188-131 10. APl number 50-029-21883 11. Field / Pool Prudhoe Bay Oil Pool 12. Present well condition summary Total depth: measured true vertical 13418 feet Plugs (measured) 9008 feet IBP set @ 12595'. (07/26/1998) Effective depth: measured 12595 feet Junk (measured) true vertical 9014 feet Casing Length Size Cemented Measured Depth True Vertical Depth Conductor 110' 20" 72 c.f. Concrete 138' 138' Surface 2636' 13-3/8" 3723 c.f. Arcticset III & II 2664' 3076' Intermediate 10946' 9-5/8" 2435 c.f. Class 'G' 10974' 8752' Liner 879' 5-1/2" 441 c.f. Class 'G' 10734' - 11613' 8485' - 8917' Slotted Liner 1805' 5-1/2" Uncemented 11613' - 13418' Perforation depth: measured Open Perfs 10990' - 11020', 11230' - 11250', 11260' - 11280', 11296' - 11326', 11330' - 11350', 11370'- 11410', 11440'- 11490', 11614'- 1,2594'. Beyond IBP 12594'- 12897' true vertical Open Perfs 8873' - 8888', 8975' - 8980', 8983' - 8988', 8992' - 8999', 9000' - 9004', 9008' - 9015', 9020' - 9027', 9032' - 9014', Beyond IBP 9014' - 9011 '. Tubing (size, grade, and measured depth) 5-1/2", 17#, L-80 TBG @ 10222' MD. Tubing Tail @ 10729' MD. 3ackers & SSSV (type & measured depth) 9-5/8" x 5-1/2" TIW (HBBP) Packer @ 10222', CTC packer set @ 11579'. 5-1/2" Otis HRQ SSSVLN @ 2097'. 13. Stimulation or cement squeeze summary Intervals treated (measured) (see attached) Treatment description including volumes used and final pressure 14. Prior to well operation Subsequent to operation OiI-Bbl Representative Daily Average Production or Injection Data Gas-Mc~ Water-Bbl Casing Pressure Tubing Pressure 15. Attachments Copies of Logs and Surveys run Daily Report of Well Operations 16. Status of well classification as: Oil __X Gas __ Suspended __ Service 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. ,~,~'~'~lJ~ ~~~ Title: Technical Assistant DeWayne R. Schnorr Date June 26, 2001 Prepared by DeWa)/ne R, Schnorr 564-5174 SUBMIT IN DUPLICATE~ Y-25 Description of Work Completed NRWO OPERATIONS 04/21/2001 04/23/2001 04/28/2001 04/29/2001 ACid: TiFL (PRE ACid) ACID: D&t (PRE-CT SET IBP, ACID STEM) (HAW) ACID: ACID/SCALEINHIBITOR ACID: ACID/SCALE INHIBITOR SUMMARY 04/21/01 TIFL PASSED (PRE ACID). TIFL PASSED (PRE ACID); BLED IA FROM 1500 PSI TO 300 PSI IN 2.5 HRS. IA FL STARTED AT 10,000' AND REMAINED UNCHANGED DURING TIFL. WELL BOL. 04/23/01 RAN 3.625 SWAGE, STOP DUE TO DEVIATION 11,148' SLM. RETURN WELL TO PRODUCTION 04/28/01 MIRU UNIT NUMBER 8. ATTEMPT TO SET IBP. SHEAR OFF AND DROP IBP. PUSH TO BOTTOM. RIH WITH SAME. SET WITH CENTER OF ELEMENT AT 11542 CTMD. DROP BALL TO OPEN CIRC. SUB. (CONT'D) 04/29/01 SHEAR CIRC SUB. PUMP 7 BBLS ACID AND DISPLACE WITH DIESEL. LET SOAK FOR 1 HR. PUMP 72 BBLS ACID WHILE RECIPROCATING ACROSS INTERVAL 11200-11500 AND PUMPING DOWN BS. SWITCH TO KCL. (NO TRUE "BREAK DOWN SEEN, THE BS PRESSURE DROPPED APPROXIMATELY 150 PSI WHILE PUMPING ACID THROUGH COIL.)RIH TO ENSURE NO ACID ON IBP. IBP IS GONE. FREEZE PROTECT COIL. TAG IBP AT 12582. POH. MU FISHING TOOLS. RIH AND LATCH IBP #2 AT 12581 CTMD. POH AND RECOVER IBP #2. RERUN FISHING TOOLS AND RECOVER IBP #1 FROM 12588. (NOTE: IBP #1&2 WERE THE ONES LOST ON THIS SI JOB. THE OTHER ONES REMAIN ON BOTTOM FROM PREVIOUSLY) ALL RUBBER ELEMENTS FROM BP WERE LEFT IN HOLE. WELL IS READY TO POP. [ Scale Inhibitor] Fluids Pumped BBLS. Description 33 33 BBLS DIESEL 189 189. BBLS MEOH 217 217 BBLS KCL 20 20 BBLS 2% KCL 79 79 BBLS ACID 538 TOTAL THE MATERIAL UNDER THIS COVER HAS BEEN MICROFILMED ON OR BEFORE OCTOBER 24, 2000 P M E E L E W A T E R IA L U N D ER TH IS M A R K ER STATE oF ALASKA AL-~SKA OIL AND GAS CONSERVATION COMMI$~,ON REPORT OF SUNDRY WELL OPERATIONS 1. Operations performed: Operation shutdown Stimulate Plugging Pull tubing Alter casing Repair well Perforate Other 2. Name of Operator BP Exploration (Alaska) Inc. 3. Address P. 0. Box 196612, Anchorage, Alaska 99519-6612 5. Type of Well: Development Exploratory Stratigraphic Service 4. Location of well at surface 1402' SNL, 168' WEL, SEC. 33, T11N, R 13E, UPM At top of productive interval 876' NSL, 223' EWL, SEC. 28, T11N, R13E, UPM At effective depth 1270' NSL, 1791' WEL, SEC. 29, T11N, R13E, UPM At total depth 1296' NSL, 1897' WEL, SEC. 29, T11N, R13E, UPM ORIGINAL 6. Datum elevation (DF or KB) KBE = 78,71 AMSL 7. Unit or Property name Prudhoe Bay Unit feet 8. Well number Y-25 (44-29-11-13) PBU 9. Permit number/approval number 88-131 / 10. APl number 50- 029-21883 11. Field/Pool Prudhoe Oil Pool 12. Present well condition summary Total depth: measured true vertical Effective depth: Casing Structural Conductor Surface Intermediate Production Liner Perforation depth: measured true vertical Length .. 13418 feet BKB 9008 feet 13310 feet BKB 9008 feet Size Plugs (measured) Junk (measured) Cemented 2636 10945 .. 891 measured 20 8 c.y. 13 3/8 3723 c.f. 9 5/8 2435 c.f. 5 1/2 441 c.f. 11614'- 12897' (horizontal) Measured depth True vertical depth BKB 2664 2664 10974 8865 10722-13418 8719-9008 true vertical subsea 8953'-8933' Tubing (size, grade, and measured depth) 5 1/2" L-80 to stabbed into top of 5 1/2" liner at 10722' Packers and SSSV (type and measured depth) 13. Stimulation or cement squeeze summary 9 5/8" TlWpacker at 10222', open-hole CTC packer at 11579'; 5 1/2" SSSV at 2097' ~ r r' ! ~ ! ~ r~ P~r. Lr..IVLL/ Intervals treated (measured) Treatment description including volumes used and final pressure MAR 2 7 1996 Alaska 0il & Gas Cons. Commission 14. Prior to well operation Subsequent to operation Representative Daily Average Production or In!ection Data OiI-Bbl Gas-Mcf Water-Bbl Casing Pressure 823 211 1863 2720 945 389 2132 2760 Tubing Pressure 395 297 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 hereby certify that the fo)/~:joing is tr, u_e al;Id correct to the best of my knowledge. ,, , ( (-- S i ~ n ed'~~~~.[ -._~¥~~.~ Title TechnicalAssistantlll Form 10-"404 Rev 06/15/88 Service SUBMIT IN DUPLICATE 5~09~95 · interval were teperfotatecl using 3 315" gunS, 6 SPF, ~e fonoW, m~ .:^. and 600 ph~ing. 10990' ' ~°2°' ~D RECEIVED MAR 2 7 1995 Alaska Oil & Gas Cons. Commission Anchorage ALASKA OIL AND GAS CONSERVATION COMMISSION WALTER J. HICKEL, GOVERNOR 3001 PORCUPINE DRIVE ANCHORAGE, ALASKA 99501-3192 PHONE: (907) 279-1433 TELECOPY: (907) 276-7542 September 21, 1994 Jerry Bixby/Steve Farris Wireline/Completion Supervisors BP Exploration (Alaska), Inc P O Box 196612 Anchorage, AK 99519-6612 Re: No-Flow Verification Seven BPX PBU Wells Dear Mr. Bixby/Farris: Our inspectors have witnessed no-flow tests on and recommended no-flow status for seven BPX PBU wells. The wells were open to an atmospheric tank to determine fluid production and monitored through a gas meter to determine gas production rates. The inspectors recommended "no-flow" status for the wells listed below. Well No. PTD No. Test Date Inspector Fld Rate 'Gas Rate B-17 79-28 8/26/94 D Amos dead 180 scf/h Y-28 91-065 9/07/94 J Spaulding dead 10 scf/h Y-19 88-096 9/09/94 J Spaulding dead 330 scf/h Y-23 86-087 9/09/94 J Spaulding dead 0 scf/h ~Y'25 88-131 9/09/94 J Spaulding dead 120 scf/h R-4 79-038 9/18/94 L Grimaldi dead 288 scf/h R-13 38-044 9/19/94 L Grimaldi dead 60 scf/h The Commission hereby authorizes removal of the subsurface safety valves from the B?X PBU wells listed above on the condition that the low- pressure sensor and surface safety valve must be maintained in good condition and, if for any reason, the well again becomes capable of unassisted flow of hydrocarbons, the subsurface safety valve must be reinstalled and maintained in good working condition. Sincerely, Blalr E. Won~ell PI Supervisor c: John Spaulding bew/n 1 pb7bpw {~) printed on recycled Dape[ b V C 13 MEMORANDUM' State of Alaska Alaska Oil and Gas Conservation Commission TO: THRU: FROM: David John ~n, DATE: Chairm~ Blair Wondzell, ~ FILE NO: ~lzof~ P. I. Supervisor ~r~~~ John Spaulding~ ~ SUBJECT: Petroleum Insp.'~'~.l~,"- September 9, 1994 1H9LIIBD.doc No-Flow Tests BPX PBU Y-23,25,19 Prudhoe Oil Pool Friday, September 9, 1994; I traveled to BPX PBU wells Y-19,23,25 to witness No-Flow test. ., The wells were bled to an atmospheric tank thru a 2" line prior to my arrival. The tubing was then connected to the American AL-425 gas meter with 112" hose. The wells Were then monitored every 112 hr. for a I 112 hour period. Well Y-19 showed an increase from 45 scflhr, to 330 scf/hr, over the I 112 hr. period and about 10 psi. Well Y-23 showed 0 scf/hr, and 0 psig. Well Y-25 did not exceed 120 scf/hr and showed a slight amount of press, to the touch. Therefore I recommend No-Flow status be granted to wells Y-19,23,25 with well Y-19 to be re-tested and witnessed in 90 days. Summ~ry;. I witnessed the No-Flow tests on BPX PBU wells &-19,23,25, no failures. Attachment: none LARRY GRANT Attn. ALASKA OIL + GAS CONSERVATION 3001 PORCUPINE DRIVE ANCHORAGE AK, 99501. Date: 15 May 1995 RE: Transmittal of Data Sent by: PRIORITY MAIL Dear Sir/Madam, Enclosed, please find the data as described below: WELL DESCRIPTION PDK FINAL BL+RF PFC/PERF FINAL BL+RF CCL FINAL BL+RF ECC No. Run # 1 5847.01 Run ~ 1 6118.01 Run # 1 6238.07 Please sign and return to: Attn. Rodney D. Paulson Atlas Wireline Services 5600 B Street Suite 201 Anchorage, AK 99518 Or FAX to (907) 563-7803 Received by: Date: Please $iSa end r. etu~ %O~ Petro%echni~al Da~a Cen%e~ BP Exp~oration (Alaska) In~ 900 Eg~t Benson Boulevar~ . . ~.,~.~.-~'--~.' ... Alaska 011 & ~as Cons. Commission Anchorage ALASKA OIL & GAS CONSERVATION COMMISSION Attn. LARRY GRANT 3001 PORCUPINE DR. ANCHORAGE AK, 99501. USA Date: 21 January 1994 RE: Transmittal of Data ECC #: 6118.00 Data: PL Dear Sir/Madam, ' 'Reference: BP Y-25 (44-29-11-13) PRUDHOE BAY NORTH SLOPE, AK Enclosed, .please find. the data as.described below: Prints/Films: 1 1 Sent by U.S. MAIL PLS STATIC FINAL BL PLS STATIC FINAL RF Run # 1 Run # 1 Please sign and return to: Atlas Wireline Services Petrophysical Services 5600. B Street Suite 201 Anchorage, AK 99518 Attn. Rodney D. Paulson Received by: Date: BP EXPLORATION C. V. Chatterton, Chairman Oil and Gas Conservation Commission State of Alaska 3001 Porcupine Drive Anchorage, AK. 99501 Dear Mr. Chatterton' BP Exploration (Alaska) Inc. 900 East Benson Boulevard RO. Box 196612 Anchorage. Alaska 99519-6612 (907) 561-5.111 /',/, ? June 15, 1989 BP Exploration is requesting administrative approval, as outlined in Conservation Order No. 213, Rule 2, to waive productivity profile requirements for new Prudhoe Bay Unit well Y-25. The waiver is requested because the well is an inverted high angle completion with a deviation of 92 degrees. The completion interval is as follows' 11614'- 13310' MDBKB (1696') 8956' - 8931' TVDss (25') An increased risk is associated with obtaining production logs in this well as all production logs would have to be coiled tubing conveyed. If future production characteristics warrant evaluation for remedial work, production logs would be obtained at that time. If you require further information, please contact B. J. Policky at (907)564-5232. Very truly yours, & o T. B. Gr~v4', Manager, Reservoir Surveillance TBG:BJP:SMB:smb cc: R. E. MacDougal (Exxon) D. F. Scheve (ARCo) D. D. Smith (ARCo) RE 6.1 RECEIVED Alaska Oil & Gas Cons, Commission Anchorage AOGCC Production Pr, f"'~., Waiver Y-25 (Inverted Hi.ah Anh~ Well) bcc: V.W. Holt ,~ B. J. Policky~V~ P. B. Production Engineering Supervisor P. B. Reservoir Engineer Well File BP EXPLORATION .~CO F~LXON ~D: PHILLIPS T~: 79840 STATE OF AK BP Exploration (Alaska)Inc. g00 East Benson Boulevard P.O. Box 196612 Anchorage, Alaska 99519-6612 (907) 561-5111 Date: 02/23/89 SYSTEMS (Transmittal & Tape) , ARCHIVES BP MAGNETIC LIS TAPES & LISTINGS The following material is being sutmitted herewith. Please acknowledge receipt by signing a copy of t_his letter and returning it to this office: Y-25 OH MWD 11/23/88 #I-24 10200-13430 Teleco#665 1600bpi API#50-029-21883 Tape Pos. #06338 * E~-%0N: An Asterisk (*) next to a listing above means you should have received the Tape(s) and Listing(s) directly from the respective service company. Please confirm this. Received Date Anch0ra,q~ __ Records Di&tz BP EXPLORATION HOUSTON ARCO CHEVRON EXXON MOBIL PHILLIPS STATE OF ALASKA ARCHIVES INDEXED BP Exl~lora(ion (Alaska) Inc, "-'--' 900 East Benson Boulevard RO. Box 196612 Anchorage. Alaska 99519-6612 (907) 561-5111 Bate: 04-21-89 , r~: 79995 ,, REFERENCE: BP F~AL DATA - PRESSURE SURVEY DATA The following material Is being submiTTed herewith. Please acknowledge recelp* by signing a copy of this .leTTer and returning It to this office: W-24 04'-12-89 BHP--S tatic Gradient Camco Y-25 04-15-89 BHP--S tatic Gradient Camco Y-25 04-13-89 BHP--S tatic Gradient Camco Z-24 04-13-89 BHP--Static Gradient Camco Z-06 04~04-89 BHP--S tatic Gradient Camco Received Da'l-e Alaska 0il & Gas Cons. Commission Anchorage Shirley R. McCurry INFORNATION CONTROL Well Records LR2-1 BP EXPLORATION HOUSTON BP Exploration (Alaska) Inc. g00 East Benson Boulevard P.O. Box: 196612 Anchorage, Alaska 99519-6612 (907) 561-5m TO: ARCO CHEVRON EXXON TEXACO MARATHON I Da're: T~: ., 04-06-89 79934 MOBIL PHILLIPS STATE OF ALASKA GEOSCIENCES '. REFERENCE: ARCHIVES B~, 'OPEN HOLE FINAL LOGS The following maferlal is being submitted herewith. Please acknowledge receipt by signing a copy of this let-ter and returning it to this office: HOU/UNIT / STATE: Y,25 MWD GAMMA PLus Directional 10559' 13344 Job// 665 TAK Y-25 MWD GAMMA Plus Directional 10559-13344 Job// 665 TAK Y-25 MWD GAMMA Plus Directional 10559-13393 Job// 665 TAK Y-25 MWD GAMMA Plus Directional 10559-13393 Job// 665 11-11/23-88 //24 Teleco 5" 11-11/23-88 //2'4 Tele'co 2" 11-11/23 88 //24 Teleco 5" 11 -11/23-88 .//24 ' ., ~ Al~S,~a Oil a G~s Con~. Commission Anchorage STATE ONLY: DIRECTIONAL SURVEYS Magnetic Single Shot Directional Survey Date: GYr'dscopi. C Directional '~Survey" Date: Job#: Job#: Rece I ved Dai*e Shirley R. McCurry I NFORMAT ION CONTROL Wel I Records LR2-I BP EXPLORATION BP Exploration (Alaska) Inc. 900 East Benson Boulevard P.O. Box 196612 Anchorage, Alaska 99519-6612 (907) 561-5111 TO: HOUSTON ARCO CHEVRON EXXON TEXACO MOBIL PHILLIPS STATE OF.ALASKA ARCHVIES DATE: 03/21/89 T%: 79895 BP FINAL DATA - PRESSURE SURVYE DATA The following material is being submitted herewith. Please acknowledgr receipt by signing a copy of this letter and returning it to this office G'25 Static Gradient 03/04/89 Camco J-29 Static Gradient 02/22/89 Camco M-29 Static Gradient 03/08/89 Camco Y-08''~ Flowing Gradient 02/16/89 Camco Y-25 Step Rate Data/PBU 02/03//89 Camco Received: Date: Anchorage Information Control Well Records LR 2-1 J. Dietz/S. McCurry ?""~ STATE OF ALASKA ~ ALASKA 0IL AND GAS CONSERVATION COMMISSION WELL COMPLETION OR RECOMPLETION REPORT AND LOG a 1. Status of Well Classification of Service Well OIL [] GAS [] SUSPENDED [] ABANDONED [] SERVICE [] 2. Name of Operator 7. Permit Number Standard Alaska Production Company 88-131 3, Address 8. APl Number P. O. Box 196612, Anchorage, Alaska 99519-6612 s0- 029-21883 4. LOcation of well at surface I~---.._o.__..., 9. Unit or Lease Name 1402' SNL, 168' WEL, SEC. 33, T11N, R13E[[OC_Ar~ONS ~ Prudhoe Bay Unit VEJ~IFIED ~ 10. Well Number At Top Producing Interval ~ Y-25 (44-29-11-13) 4403' SNL, 5057' WEL, SEC. 28, T11N, R13E 11. Field and Pool At Total Depth Prudhoe Bay Field/Prudhoe Bay Pool 3984' SNL, 1897' WEL, SEC. 29, T11N, R13E .. 5".' Elevation in feet (indicate KB, DF, etc.) ~6. Lease Designation and Serial No. KBE= 78.71' lADL 28288 12. Date Spudded 13. Date T.D. Reached 14. Date Comp., Suep. or Aband. ~15. Water Deplh, if offshore 116. No. of Completions 10/31/88 11/24/88 12/12/88I N/A feet MSL I One 1~. Total Depth (MD+TVD) 18. Plug Back Depth (MD+TVD) 19. Directional Survey 120. Depth where SSSV set 121. Thickness of Permafrost I 13418' MD 9008' TVD 13310' MD 9008'TVD YES [] NO [] 2098 feet MD I 2000' .... 22. Type Electric or Other Logs Run GR/EWR/CNO/SFD 23. CASING, LINER AND CEMENTING RECORD SETTING DEPTH MD CASING SIZE WT. PER FT. GRADE TOP BOTTOM HOLE SIZE CEMB~FING RECORD AMOUNT PULLED 20'~ Conductor Surface 8 cu. yds. Concrete 13-3/8" 68# L-80 Surface 2664' 17-1/2" 3723 cu. ft. Arctic Set III & II 9-5/8' 47# NT80S Surface 10974' 12-1/4" 2435 cu. ft. Class G 5-1/2'~ 17# L-80 10734' 11613' 8-1/2" 441 cu. ft. Class G 5-1/2" 17# L-80 11613' 13418' 8-1/2" Uncemented Slotted Liner 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 (MDI Schlumberger 3-3/8" @ 4 spf. 5-1/2" 17# 10 710' 10222' L-80 A/B Mod MD TVDss 26. ACID, FRACTURE, CEMENT SQUEEZE, ETC. 11614'- 12897' 8953'-8933' DEPTH INTERVAL (MD) AMOUNT & KIND OF MATERIAL USED 13-3/8" X 9-5/8" Freeze Protect 13-3/8" x 9-5/8" Annulus with 175 BBLS Dry Crude. 27. PRODUCTION TEST Date First Production IMethod of Operation (Flowing, gas lilt, etc.) 12/06/88 I Fiowing Date of Test Hours Tested PRODUCTION FOR ~)IL-BBL GAS-MCF ~/ATER-BBL CHOKE SIZE IGAS-OIL RATIO TEST PERIOD II~ FI0w Tubing Casing Pressure CALCULATED,.~ C)IL-BBL GAS-MCF ~NATER-BBL OIL GRAVITY-APl (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 /~laska 0il & Gas Cons. Comm, l~ Form 10-407 Rev. 7-1-80 CONTINUED ON REVERSE SIDE Submit in duplicate :~E"'. ~ '.: : ,.: ;: ~.~ ; : ~: ,: I~lude~intew~-tested, pressure data, .... u~. ~m . mu~.~m ~o~, ~ t~m~ o~ ~ ~. ' ' SHUBL1K A 11022" ' 8890' ZONE 4 112~' 8982' . .... ~ ~. . . , , ,,, .... 31. LIS+ O~ i~AcHMEms '" .................. , , , 32. I' hereby cedify that lbo forogoi'ng ~ truo and ~ to tho b~t of my Signed , { / ~ Title PRll Drilling Engineering Sup~misor Date .,, / / .......... ~ , , 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 STANDARD ALASKA PRODUCTION Daily Drilling Report -- PRUDHOE BAY October 31, 1988 at 0600 hrs Rig: Nabors 18E Well: Y-25 (44-29-11-13) AFE # 120824 AFE Amount: (Investment) Current Amount: Current Operation: 0600 Depth: 201' Day: 0 Drilling 17-I/2" hole. Accepted rig @ 0401 hrs on 10/29/88. Dug & installed cellar box. Drilled, installed & cemented 20" conductor. Drilled 17-1/2" hole to 201'. STANDARD ALASKA PRODUCTION Daily Drilling Report -- PRUDHOE BAY November 1, 1988 at 0600 hfs Rig: Nabors 18E AFE# 120824 (Investment) Well: Y-25 (44-29-11-13) AFE Amount: Current Amount: Current Operation: 0600 Depth: 1880' Day: 1 Drilling 17-I/2" hole. Drilled 17-1/2" hole with surveys to 1880'. STANDARD ALASKA PRODUCTION Daily Drilli0g Report -- ['RUDI-[OE BAY November 2, 1988 at 0600 hfs Rig: Nabors 18E Wett: Y-25 (44-29-1 I- 13) AFE # (Investment) 120824 AFE Amouni: Cu rte n t A mou n t' 0600 Depth' 2685' Day: 2 ~Current Operation: N/U BOP. Drilled 17-1/2" hole with surveys to 2685'. Ran & cemented 13-3/8" casing. STANDAR.D ALASKA PRODUCTION Daily Drilling Relmrl -- I>I?,UI)i'I()I': i~AY November 3, 1988 at 06()(1 l~r.s :Rig: Nabors 1SE Well: Y-25 (44-29-11-1:3) AFE # 120824 AI-:E Am(rant: (lnvcsmmnt) Current A~oul~t' 0600 Depth: 2800' Day: 3 Current Operation: NU wellhead. Test 13-3/8" casing to 3000 psi. Cleaned out & ran FIT to 14.1 ppg. RIf4 with kick off assen~bly. STANDARD ALASKA PRODUCTION Daily Drilling Report -- PRUDiIOE BAY November 4, 1988 at 0600 hfs Rig: Nabors 18E Welt' Y-25 (44-29-11-13) AFE ti 120824 AFE Amount: (Investment) Current Amount: 0600 Depth: 4172' Day: 4 Cu.rrcnt Operation: POOH. KiCked off& drilled 12-I/4" hole with surveys to 4172'. STANDARD ALASKA PRODUCTION Daily Drilling Report -- PRUDHOE BAY November 7, 1988 at 0600 hrs Rig: Nabors 18E We,Il' Y-25 (44-29- I 1 - 13) AFE # (lhvestment) 120824 AFE Amount: Current Amount: 0600 Depth: 7.080' Day: 7 Current Operation' RIH. Drilled t2-1/4" hole with surveys to 7080'. STANDARD ALASKA PRODUCTION Daily Drilling Report -- I:~RU[)I{()E BAY November 8, 19.88 al 0600 hfs Rig: Nabors 18E Well: Y-25-(44-2%11- 13) AFE it (Investment) 120824 AIrE Amount: Current Amount' 0600 Depth' 81 I I' Day: 8 Current Operation: Drilling 12-1/4" hole. D,-511ed 12-1/4" hole with surveys to 8111' STANDARD ALASKA PRODUCTION Daily Drilling Report -- PRUDIIOE-BAY November 9, 1988 at 0600 hfs Rig' Nabors 18E Wctl' Y-25 (44-29-11-13) AFE It (Investment) 120824 AFE Amount: Current Amount: ~0600 Depth- 8,874 Day: 9 -Current Operation: I~(lcd 12 1/4" hole with surveys to 8,879'. STANDARD ALASKA PRODUCTION Daily Drilling Report -- PRUDHOE BAY November 10, 1988 at 0600 hfs Rig: Na-bors 18E Wet:i- Y-25 (44-29-11 - 13) AFE # (Investment) 120824 AFE Amount: Current Amount: 0600 Depth: 9,783 Day: 10 Cucrent Operation: RIH Drilled 12-1/4" hole with surveys to 9,78Y. POOH for motor. STANDARD ALASKA PRODUCTION l)aily l)rilling Reporl --PRUDIIOE BAY Noveml)er I1, 1988 at 0600 hrs Rig: Nabors 18E W-ell' Y-25 (44-29-11 - 13) AFE # (Investment) 120824 AFE Amount: Cu rrent A mount' 0.600 Depth: 1:0;070 Day' 11 Cu~ent Operation' Drilling 12-I/4" hole. Drilled 12-1/4" hole with motor to I0,070'. STANDARD ALASKA PRODUCTION Daily Drilling Report -- PRUDll()E BAY November 14, 1988 al 0600 hfs Rig: Nabors I,E Welt: Y-25 (44-29-11-13) AFE # (Investment) 120824 AFF Amount' Currt211[ Awl()tllll' 0600 Depth: I(X)83 Day: 14 CuffCn t Ope rat ion' Rig up 'to run 9-5/8" casing Drilled 12.1/4" hole with surveys to I0983'. STANDARD ALASKA PRODUCTION Daily Drilling Report -- I'RUDIIOE BAY November 15, 1988 at 0600 hfs Rig: Nabors 18E Well' Y-25 (44-29-11-13) AFE # (Investment) 120824 A FE A mou n t' current Amount' 0600 Depth' 10,983 Day: 15 Current Operation' RIH with 8-1/2" bit. Ran and cemented 9-5/8" casing. Tested BOP. STANDARD ALASKA PRODUCTION Daily Drilling Report -- PRUDIIOE BAY November 16, 1988 at 0600 hfs Rig' Nab.Ors 1SE W, eit' Y-25 {44-29-11 - 13) A FE # (Investment) 120824 AI~E Amount: Current Amount: 0600 Depth: I-0,9-83 Day: 16 · Current Operation:. Circ and condition OBM Drilled out to float shoe. Tested casing {o 3,000 psi. Displace well to OBM. Drill shoe, circ and condition OBM. STANDARD ALASKA PRODUCTION .Daily Drilling Report -- PRUDIlOE BAY November 17, 198g at 0600 hfs R,ig: Nabors 18E Wctt' Y-25 (44-29-11 - 13) AFE'# (Investment) 120824 AFl:. Amount: Current Amount: 0.600 Depth- I I, 151 Day: ! 7 Current Operation: POOH Completed displacing OBM. RIft with motor with kick ,pad. Ddited 8-1/2" .ho,lc ,to 11,t51' STANDARD ALASKA PRODUCTION Daily Dril'ling Report.-- PRUDHOE BAY November 18, 1988 at 0600 hfs Rig: Nabors 18E Well' Y-25 (44-29-11-13) AFE # 120824 AFE Amount: (Investment) Current Amount: 0600 Depth' 11,250' Day: 18 Current Ope~'a~ion: RIH POOH and moved KICK PAD on motor. R1H and drilled to 11,250'. POOH. R~H wi.d~ rotary assembly. STANDARD .......... ALASKA PRODUCTION ...... Daily Drillin~ R¢l)orl -- I'ilUI)IlOE II^Y (In vestment) Well' Y-25 (44-29-11-13) Al:Ii Current Amount' 0600 Depth: 12,337' Day' 21 Current Operation: Drilling 8'1/2" hole. Drilled 8-1/2" hole with surveys to 12,337'. STANDARD ALASKA PRODUCTION Daily Drilling Report -- I'rudhoe Bay [Jni! November 2~, 19~8 al 0600 hrs Rig' Nabors IgE Well' Y-25(44-29-11-13) AFE# 120824 APl: 50-029-21883 AFE Current AmOtlilt; 0600 Depth: 13,050' Day: 22 24- Hour Ftg: 713 Current Operation: Drill 8-I/2" hole. Drilled 8-1/2' hole with surveys to 13,050'. Mud Type: Oil Faze WT: 9 SURVEY MD .ANGLE 82 12662 90.1 85 13009 90.6 VIS:43 PV: I0 DIRECTION N77.5W N77.1W TVD 9015 9012 YP: 12 FL: SECTION 6691 7037 Solids: 12 Temp: 88°F COORDINATES DLS N2622 W6224 ~0.1 N2697 W6563 0.5 STANDARD ALASKA PRODUCTION Daily Drilling Reporl -- Prudhoe Bay Unit November 7.3, lYNN a! ()dO(t hrs Ri-' Nabors \Veil- Y-25(44-29-11-13) A IrE # 12082,~ API: 50-029-21883 A Fi". Am~mrll' Current Amount: Current Operation: Drilling. Drilling at 13290'. 06(X) Depth' 13290 Day' 23 24- Hour Ftg: 240 Mud Type: Oil Faze SURVEY MD WT: 9.1 .ANGLE VIS: 47 DIRECTION PV: 15 YP: 15 FL: Solids: 12 Temp: 86°F COORDINATES DLS STANDARD ALASKA PRODUCTION Daily Drilling Report -- Prudhoe Bay Unit Noven~bcr 28, 19N8 al ()0()() hvs Ri,,' \Veil: 't'-25(44-29-11-13) AFE # 120824 APl: 50-029-21883 A FE Amot, nt: Current Amount: Current Operation: POH 0600 Depth' 13,418' Day: 28 120 - Hour Ftg: Drilled to 12,418'. Lost circulation. Spotted LCM pill on bottom. Ran combination 5-1/2" slotted and 5-1/2" solid liner completion. Cemented liner from 11,575' to TOL at 10,721'. Liner lap did not test. Squeezed lap. Lap test broke down at 1700 psi. Mud Type: Oil faze SURVEY_ ,MD_ WT:90+ VIS:44 PV: 16 YP: 10 FL: Solids: 12 Temp: 77°1: ANGLE DIRECTION TVD SECTION_ COORDINATES DLS STANDARD ALASKA PRODUCTION Daily Drilling Report -- i~rudhoe Bay Unit November 29, 1988 al ()6()()hrs Ri,,' Nabors IRE Well' Y-25(44-29-11-13) AFE# 120924 APl: 50-029-21883 A I:F, A Currt:nt Anlount: Current Operation: 0600 Depth- 13,418' Day: 29 24- Hour Ftg: POH Squeezed liner lap with 106 sks. Class G. Found no cement at liner top. Lap broke down at 1300 psi. POH. Mud Type: Oil Faze SURVEY MD WT:9.1 VIS:43 PV: 15 YP: 10 FL: Solids: 14 Temp: 80o}7 ANGLE pIRECTION TVD SECTION {2OORDINATES DLS STANDARD ALASKA PRODUCTION Daily Drilling Report -- Prudhoe Bay Unit November 30, 1988 at 0600 hfs Ri-' Nabors 18E Well: Y-25(44-29-1t-13) AFE # 120824 APl' 50-029-21883 AFE Amount: Current Amount: Current Operation: RIH 0600 Depth: 13,418' Day' 30 24- Hour Ftg: Squeezed liner lap with 175 sks. class G. Held final squeeze pressure (1700 psi) for 4 hours. Trip for bit. Mud Type: Oil ·faze SURVEy MD_ WT: 9.1 VIS:zl4 PV: 14 YP: 10 FL: Solids: 14 Temp: °F ANGLE DIRECTION TVD SECTION COORDINATES DLS STANDARD ALASKA PRODUCTION Daily Drilling Report -- Prudhoe Bay Unit l)cccml)er 1, 19~8 ;il ()6()() hfs Ri,,' Nabors l gE \Vcll. Y-25(,'14-29-11-13) AFE # 120824 APl: 50-029-21883 A IrE A mount' Currcn[ Current Operation: 0600 Depth- 13,418' Day: 31 24- Hour Ftg: Cleaning out 5-I/2" liner. Tested liner lap to 3000 psi. Cleaning out inside 5-1/2". Mud Type: Oil faze SURVEy ~ WT: 9.2 ~VIS: 43 PV: 15 YP: 9 FL: ANGLE DIRECTION TVD ~ Solids: 14 Temp: 90°l:: COORDINATES DL$ STANDARD ALASKA PRODUCTION l)c¢cmber 2, 19x8 ;1! 0600 hr's Rix' Nabors lgE Well: Y-25(44-29-11-13) APl: 50-029-21883 Current Amount: 0600 Depth: 13,418' Day: 32 24- }tour Ftg: Current Operation: Drilling port collar. Cleaned out 5-I/2" liner to port collar. Mud Type: Oitfaze SURLY ~ WT: 8.9 VIS: 59 PV: 15 ~ .DIRECTION TVD YP: 10 FL: SECTION Solids: 13 Temp: 62'F _COORDINATES DLS STANDARD ALASKA PRODUCTION Daily Drilling Report -- Prudhoe Bay Unit I)ecc:::bcr $, 19,'48 al 0600 Rig' Nabors 18E Well' Y-25(44-29-11-13) AFE # 120824 Al'I-50-029-21883 AFE Amount: Current Amount' 0(~0 Depth: 13310' Day: 35 72- Hour Ftg: Current Operation: Mixing LCM pill. Cleaned out cement in slotted liner to 12700'. RIH to 13310'. Losing circulation. Mud Type: Oil Faze WT: 8.9 VIS:60 PV: 16 SURVEY .MD ANGLE DIRECTION TVD YP: 10 FL: SEC!7...ON Solids: 12.5 Temp: COORDINATES 60 °F DL~ STANDA-RD ALASKA PRODUCTION l)aily l)rilling Report-- l'rudhoc Bay Unit l)ccc,~bcr 6, 19gg al 0600 hrs Well- Y-25(4.4-29-II-t3) AFE # 120824 Al)I: 5(}-(}29-21883 AFE AmounI: Current Amount: 0600 Depth' 13,310' Day: 36 24- Flour Ftg: Current Operation: POH for perforating guns. Spot LCM pill at TD. Trip. Ran 5-1/2" scraper to 12,900'. Displaced liner 1o clean oil mud. POH. Mud Type: Oil Faze StIRMY ~ WT: 8.7 ANGLE VIS: 47 PV: 13 YP: 5 FL: DIRECTION TVD SECTION Solids: 10.5 Temp' COORDINATES 60 °F DLS STANDARD ALASKA PRODUCTION Daily Drilling Reporl -- Prudhoe Bay Unil l)ccc~l)cr ?, lg,~t~ at 0600 hfs Rig: Nabors lgE Well' Y-25(44-29-I1-13) AFE# 120824 APl: 50-029-21883 AFE Amount' Current A~nount: Current Operation' 0600 Depth: 13,310' Day: 37 24- Hour Ftg: POH. Perforated with drill pipe conveyed guns. POH. Mud Type: Oilfaze WT: 8.1 SURLY MD ~ VIS: 41 PV: 13 YP: 5 FL: DIRECTION Solids: 10.5 Temp: NIA °F COORDINATES ~ .. STANDARD ALASKA PRODUCTION .. l)aily l)rilling Report -- Prudhoc Bay Unit l,~ccc:lil)er g, 19gg ;il ()60()hfs Rig: Nabors lgE Well' x1;-25 (,1.1-29-11-13) A I:t:. # 120824 ,,\l'I' 50-029-21883 Current Current Operation: 0600 Depth: 13,380' Day: 38 24- Hour Ftg: Cleaning pits. POH perforating guns. Polished TIE back recepticle. CBU. Mud Type: NaCI2, Brine WT: 8.6 ~URVEY MD ~ VIS: PV: YP: FL: DIRECTION ~ SEC~ON Solids: Temp: COORDINATES DLS STANDARD ALASKA PRODUCTION l)aily Drilling Report -- Prudhoe Bay Unit l)ccc~bcr 9, 19gk¢ at 0(~0(} l~r.s Rig: Ni~bors I8E \Veil' Y-25 (44-29-11-13) AFE # 120824 API: 50-029-21883 AFE Amouat' Current Amount: Cu rrcn t Operation: 0600 Depth: 13,310' Day' 39 24- Hour Ftg: Running 5-I/2" tubing. Displaced oil mud with 8.6 ppg NaCI. Running 5-1/2" tubing. Mud Type: Brine SURVEY MD WT: 8.6 ANGLE VIS: PV: YP: FL: D.mECTION TVD ~ Solids: Temp: COORDINATES STANDARD ALASKA PRODUCTION l)aily l)riiling Report -- i~ru(lhoe l;ny Unit Rig: Nabors IgE Well' Y-25(44-29-11-13) AI-:F. # 120824 APl' 50-029-218.3 AFE Amount' Current Operation: 0600 Depth' Day: 72- Hour Ftg: 42 Cleaning rig. Ran 5-1/2" tubing. Set packer. Displaced tubing with diesel. Cleaning rig. Mud Type: SURLY WT: VIS' PV: YP: FL: ANGLE DIRECTION TVD SECTION Solids: Temp: °F ~OORDINATES DLS , [ItOFILMED DIRECTIONAl. ~URVEY [~]UIDANCE [~]ONTINUOUS r'flooL RECE VED Oil & Gas Cons. C0mmissio.;[ ~chorage Company , STANDARD ALASKA PRODUCTION COMPANY I Well Name Y.-...25(44-29-11-13)(.]....402' SNL...,16,8' WEL,SEC 33,.TllN,R13E) Field/Location PRUDHOE BAY, NORTH SLOPEr ALASK,,A Job Reference No. Date 73085 2-JAN-89 Logged By: Computed By: MCBRIDE KOHRING GCT DIRECTIONAL SURVEY CUSTOMER LISTING FOR STANDARD ALASKA PRODUCTION CO. Y-Z5 ( ~4-2 9-11-13) PRUDHOE ~AY NOqTH SLOPE, ALASKA SURVEY DATE: OZ-JAN-S9 ENGINEER: MCBRIDE METHODS OF COMPUTATION TOOL LOCATION: TANGENTIAL- AVERAGED DEVIATION AND AZIMUTH INTERPOLATION: LINEAR VERTICAL SECTION: HDRIZ. DIST. PROJECTED ONTO A TARGET AZIMUTH OF NORTH 65 DEG 7 MIN WEST DATA FROM SURFACE TO 11298.3' ACQUIRED WITH TANGENTIAL METHOD FROM SCHLUMBERGER GCT TOOL. MWO DATA FROM 2668' TO 13385' ACQUIRED WITH RADIUS OF CURVATURE METHOD FROM MEASURED WHILE DRILLING SURVEY. MWD DATA TIED TO GCT DATA AT DEPTH OF 11219o3'. DATA HAS ALSO BEEN EXTRAPOLATEO FROM MWO T.D. OF 13385' TO DRILLER'S T.Do OF 13~18'. STANDARD ALASKA PRODUCTION CO. Y-25 (44-29-11-133 PRUDHDE BAY NORTH SLOPE, ALASKA COMPUTATION DATE: 06-JAN-B9 PAGE 1 DATE DF SURVEY: O2-JAN-B9 KELLY ~USHING ELEVAT[ON: 78.71 FT ENGINEER: MCBRIDE INTERPOLATED VALUES FOR EVEN 100 FEET OF MEASURED DEPTH TRUE SUB-SEA COURSE MEASURED VERT[CAL VERTICAL DEVIATION AZIMUTH DEPTH DEPTH DEPTH DIG MEN DIG 0.00 0.00 -78.71 0 0 N 0 O E 100.00 100.00 21.29 0 10 S 12 3 E 200.00 200.00 121.29 0 10 S 16 44 W 300.00 300.00 221.29 0 26 S 4 53 W 400.00 399.99 321.28 0 29 S 5 24 E 500.00 499.99 421.28 0 34 S 12 0 E 600.00 599.98 521.27 0 35 S 16 )3 E 700.00 699.98 621.27 0 23 S 11 34 E 800.00 799.98 721.27 0 8 S 19 48 E 900.00 899.98 821.27 0 8 S 22 25 E 1000.00 999.98 921.27 1100.00 1099.98 1021.27 1200.00 1199.98 1121.27 1300.00 1299.98 1221.27 1400.00 1399.98 1321.27 1500.00 1499.98 1421.27 1600.00 1599.97 1521.26 1700.00 1699.97 1621.26 1800.00 1799.97 1721.26 1900o00 1899.97 1821.26 0 12 S 16 27 W 0 11 S 45 22 W 0 13 S 54 22 W 014 S 63 25 W 012 S 72 17 W 0 12 S 81 38 W 0 7 S 78 41W 0 5 N 83 1~ W 0 3 S 61 17 W 0 2 S 71 30 W ZO00.O0 1999.97 1921.26 Z100.00 Z099.97 Z021.26 2200.00 2199.97 2121.26 2300.00 2299.97 2221.26 2400.00 2399.97 2321.26 2500.00 2499.97 2421.26 2600.00 2599.97 2521.26 2700.00 2699.96 2621.25 2800.00 2799.96 2721.25 2900.00 2899.94 2821.23 0 3 S 41 43 W 0 5 S 49 20 W 016 S 6 BE 0 20 S 13 16 E 019 S 6155 025 S 5 OW 030 S 0 3 W 0 28 S I 4'~ 5 0 34 S 34 8 W I 50 N 83 44 W 3000.00 2999.81 2921.10 3 48 3100.00 3099.46 3020.75 5 47 3200.00 3198.73 3120.02 8 2 3300.00 3297.42 3218.71 10 22 3400.00 3395.44 3316.73 12 31 3500.00 3492.60 3413.89 14 38 3600.00 3588.85 3510.14 16 52 3700.00 3684.03 3605.32 18 48 3800.00 3778.11 3699.40 20 49 3900.00 3871.03 -3792.32 22 34 VERTICAL DOGLEG RECTANGULAR COORDINATES HORIZ. DEPARTURE SECTION SEVERITY NORTH/SOUTH EAST/WEST DIST. AZIMUTH FEET OEG/IO0 FEET =EET FEET DEG MIN 0.00 0.00 0.00 N 0.00 E -0.39 0.60 0.1~ $ 0.34 E -0.51 0.00 0.45 S 0.35 E -0.79 O.3g 0.97 S 0.42 E -1.18 0.59 1.81 S 0.46 E -1.72 0.67 2.79 S 0.60 E -2.37 0.48 3.82 S 0.84 E -2.87 0.76 4.61 S 1.03 E -3.12 0.44 5.00 S 1.12 E -3.28 0.62 5.26 S 1.18 E -3.37 0.57 5.52 S 1.16 E -3.34 0.47 5.79 S 1.00 E -3.18 0.43 6.03 S 0.70 E -2.90 0.¢6 6.21 S 0.32 'E -2.59 0.47 6.35 S 0.09 W -2.31 0.50 6.42 S 0.44 W -2.09 0.47 6.45 S 0.69 W -1.90 0.39 6.48 S 0.91 W -1.80 0.41 6.50 S 1.03 W -1.71 0.26 6.46 S 1.11 W 0.00 N 0 0 E 0.39 S 62 22 E 0.57 S 37 31 E 1.06 S 23 11 E 1.87 S 14 11 E 2.85 S 12 13 E 3.91 S 1Z 21 E 4.73 S 12 33 E 5.13 S 12 34 E 5.39 S 12 40 E -1.67 0.44 6.48 S 1.16 W -1.65 0.23 6.52 S 1.20 W -1.76 0.38 6.82 S 1.22 W -2.05 0.42 7.34 S 1.15 W -2.36 0.32 7.91 S 1.07 W -2.70 0.00 8.62 S 1.03 W -3.03 0.34 9.43 S 1.04 W -3.33 0.43 10.22 S 1.07 W -3.60 1.28 11.11 S 1.19 W -2.11 1.89 11.48 S 2.99 W 5.64 S 11 52 E 5.88 S 9 ,~4 E 6.07 S 6 39 E 6.22 S 2 57 E 6.35 S 0 47 W 6.44 S 3 53 W 6.49 S 6 4 W 6.54 S 7 58 W 6.58 S 8 59 W 6.56 S 9 4.6 W N 70 20 W 2.66 2.07 N 68 19 W 10.95 2.17 N 68 14 W 22.95 2.34 N 67 5B W 38.99 1.75 N 68 14 W 58.74 2.79 N 67 54 W 82.35 1.88 N 67 4 W 109.41 2.26 N 65 37 W 140.07 1.89 N 65 21 W 173.95 1.78 N 67 14 W 210.90 1.87 6.58 S 10 8 W 6.63 S 10 26 W 6.93 S 10 8 W 7.43 S 8 53 W 7.98 S ? 42 W 8.68 S 6 47 W ) 9.49 S 6 16 W 10.27 S 5 $8 W 11.17 S 5 5 W 11.86 S lq, 36 W 10.20 S 7.66 W 12.76 S 36 55 W 7.22 S 15.42 W 17.03 S 64. 55 W 2.80 S 26.59 W 26.74 S 83 59 W 3.15 N 41.51 W 41.63 N 85 39 W 10.56 N 59.85 W 60.77 N 79 59 W 19.36 N 81.79 W 84.05 N 75 40 W 29.72 N 106.82 W 110.88 N 74 27 W 42.03 N 134.91 W 141.31 N 72 41 W 56.16 N 165.71 W 174.96 N 71 16 W 71.02 N 199.53 W 211.80 N 70 24 W STANDARD ALASKA PRODUCTION CO. Y-25 C4&-29-11-137 PRUOHOE BAY NORTH SLOPE9 ALASKA COMPUTATION DATE: 06-JAN-89 PAGE 2 DA'TE OF SURVEY: 02-JAN-89' KELLY BUSHING ELEVATION: 78.71 FT ENGINEER: MCBRIDE INTERPOLATEO VALUES FOR EVEN 100 FEET OF MEASURED DEPTH TRUE SUB-SEA COURSE MEASURED VERTICAL VERTICAL DEVIATION AZIMUTH DEPTH DEPTH OEPTH DEG MIN OEG MIN 4000.00 3962.71 3984.00 24 28 4100.00 4053.26 3974.55 25 34 4200.00 4142.97 4064.26 27 10 4300.00 4230.78 4152.07 29 57 4400.00 4316.0!:3 4237.37 32 57 4500.00 4398.64 4319.93 35 40 4600.00 44?8.39 4399.68 38 31 4700°00 4554.91 4476.20 41 42 4900.00 4627.62 4548.91 44 56 4900.00 4696.50 4617.79 47 42 VERTICA'L OOGLEG RECTANGULAR COORDINATES HORIZ. DEPARTURE SECTION SEVERITY NORTH/SOUTH EAST/WEST DIST. AZIMUTH FEET OEG/tO0 FEET FEET FEET DEG MIN 5000.00 4762.63 4683.92 49 21 5100.00 4826.68 4747.97 50 5.9 5200.00 4888.67 4809.96 52 18 5300.00 6948.94 6870.23 53 17 5400.00 5008.50 4929.79 53 45 5500.00 5067.23 4988.52 54 6 5600.00 5125.83 5047.12 54 It 5700.00 5184.00 5105.Z9 54 23 5800.00 5244.59 5165.88 51 7 5900.00 5309.48 5230.77 48 12 N 66 54 W 150.78 N 65 4 W 293.21 N 65 41 W 337.37 N 65 47 W 395.20 N 65 19 W 437.37 N 65 10 W 493.78 N 64 52 W 554.09 N 64 31 W 618.44 N 64 31 W 687.07 N 64 29 W 759.54 6000.00 5378.03 5299.32 45 25 6100.00 5449.36 5370.65 44 17 6200.00 5521.16 5442.45 43 59 6300.00 5592.83 5514.12 44 24 6400.00 5664.61 5585.90 44 1 6500.00 5736.59 5657.88 43 52 6600.00 5808.67 5729.96 43 44 6700.00 5880.92 5802.21 43 46 6800.00 5953.37 5874.66 43 27 6900.00 6026.16 5947.45 43 9 N 64 25 W 834.55 N 64 17 W 911.33 N 64 14 W 989.78 N 64 21 W 1069.57 N 64 32 W 1149.89 N 64 30 W 1130.83 N 64 41 W 1311.86 N 64 23 W 1393.19 N 63 57 W 1472.71 N 64 34 W 1548.77 7000.00 6099.27 6020.56 42 48 7100.00 6172.72 6094.01 42 40 7200.00 6246.40 6167.69 42 29 7300.00 6310.23 6241.52 42 12 7400.00 6394.70 6315.99 41 37 7500.00 6469.74 6391.03 41 4 7600.00 6544.71 6466.00 42 0 7700.00 6618.47 6539.76 43 0 7800.00 6690.86 6612.15 44 9 7900.00 6761.91 6683.11 45 15 N 64 34 W 1621.56 N 64 45 W 1691.64 N 65 3 W 1761.25 N 64 51 W 1830.98 N 65 0 W 1900.61 N 65 I W 1970.03 N 64 53 W 2039.34 N 64 40 W 2108.47 N 64 2q W 2177.40 N 64 42 W 2245.97 N 64 33 W 2314.19 N 64 33 W 2382.04 N 64 37 W 2449.66 N 64 40 W 2517.10 N 64 20 W 2583.83 N 64 10 W 2649.93 N 64 21 W 2716.09 N 64 18 W 2783.61 N 63 59 W 2852.59 N 63 41 W 2922.92 1.92 1.15 2.95 2.81 2.90 2.98 3.14 3.47 3.48 1.71 I .48 1.67 1.35 0.49 I .05 0.31 0.60 2.87 3.16 2.82 3.28 1.09 0.26 0.65 0.95 0.50 1.17 1.04 1.04 1.06 1.12 0.74 1.03 1.32 0.81 1.81 1.38 1.43 0.99 2.04 86.41 N 236.36 W 251.66 N 69 55 W 103.63 N 2'75.14 W 294.01 N 69 21 W 122.20 N 315.21 W 338.07 N 68 48 W 141.77 N 358.86 W 355.85 N 68 26 W 163.27 N 406.40 W 437.97 N 6~ 6 W "',~ 186.93 N 457.60 W 494.31 N 67 46 W 212.35 N 512.29 W 554.56 N 67 29 W 239.94 N 570.44 W 618.85 N 67 Il W 269.50 N 632.37 W 687.41 N 66 55 W 300.72 N 697.78 W 759.83 N 66 41 W 333.10 N 765.45 W 834.78 N 66 28 W 366.34 N 834.67 W 91.1.52 N 66 18 W 400.40 N 905.35 W 989.94 N 66 8 W 434.91 N 977.30 W 1069.70 N 66 0 W 469.47 N 1049.81 W 1150.00 N 65 54 W 504.29 N 1112.88 W 1230.92 N 65 48 W 538.98 N 1196.11 W 1311.93 N 65. 44 W 573.87 N 1269.58 W 1393.26 N 65 40 W 608.7~ N 1341.06 W 1472.76 N 65 35 W 641.71 N 1409.62 W 1548.81 N 65 31 W 673.2& N 1475.24 W 1621.59 N 65 28 W 703.15 N 15.38.61 W 1691.66 N 65 26 W 732.59 N 1601.69 W 1761.28 N 65 25 W 762.09 N 1664.87 W 1831.00 N 65 24 W 791.63 N 1727.92 W 1900.63 N 65 23 W W 1970.05 N 65 12 W ) 820.93 N 1790.85 850.40 N 1853.60 W 2039.36 N 6.5 Z1 W 879.82 N 1916.15 W 2108.49 N 6.5 20 W 909.39 N 1978.42 W 2177.41 N 65 18 W 938.73 N 2040.40 W 2245.98 N 65 17 W 968.00 N 2102.02 W 2314.20 N 65 16 W 997.15 N 2163.29 W 2382.05 N 65 15 W 1026.15 N 2224.38 W 24~9.66 N 65 14 W 1055.17 N 2285.26 W 2517.10 N 65 12 W 1083.95 N 1345.47 W 2583.84 N 65 11 W 1112.53 N 2405.07 W 2649.93 N 65 10 W 1141.25 N 2464.69 W 2716.09 N 65 9 W 1170.45 N 2525.58 W 2783.61 N 65 B W 1200.54 N 1587.66 W 2851.59 N 65 6 W 1.231.64 N 2650.76 W 2922.92 N 65 4 W COMPUTATION DATE: 06-JAN-89 STANDARD ALASKA PRODUCTION CO. Y-25 (44-29-11-133 PRUOHOE BAY NORTH SLOPE, ALASKA DATE DF SURVEY: O2-JAN-89 KELLY BUSHING ELEVATION: 78.71 FT ENGINEER: MCBRIDE INTERPOLATED VALUES FOR EVEN 100 FEET OF MEASURED DEPTH TRUE SUB-SEA COURSE MEASURED VERTICAL VERTICAL DEVIATION AZIMUTH DEPTH DEPTH DEPTH OEG MIN D'EG MIN VERTICAL DOGLEG RECTANGULAR CgORDINATES HDRIZ. DEPARTURE SECTION SEVERITY NORTH/SOUTH EAST/WEST DIST. AZIMUTH FEET OEG/IO0 FEET FEET FEET DEG MIN 8000.00 6831.70 6752.99 46 6 8100.00 6900.79 6822.08 46 32 8200.00 6969.23 6890.52 47 1 8300.00 7037.13 6958.42 47 19 8400.00 7105.12 7026. ~,1 46 54 8500.00 71 74.07 7095.36 45 56 8600.00 7263.61 7164.90 45 43 8700.00 7313.97 7235.26 45 5 8800.00 7385.03 7306.32 44 27 8900.00 1'457.16 7378.45 43 40 N 63 9 W 2994.52 N 63 4 W 3066.77 N 63 7 W 3139.64 N 62 41 W 3213.00 N 62 19 W 3286.26 N 62 11 W 3358.61 N 61 39 W 3430.37 N 61 42 W 3501.30 N 61 51 W 3571.55 N 61 12 W 3640.68 0.98 0 · 93 I .46 1.85 2.51 0.53 1.59 2.08 2.60 0.90 1263.74 N 2714.80 W 2994.53 N 65 2 W 1296.31 N 2779.34 W 3066.78 N 64 59 W 1329.33 N 2844.34 W 3139.65 N 64 57 W 1362.70 N 2909.74 W 3213.02 N 64 54 W 1396.44 N 2974.84 W 3286.30 N 64 51 W 1429.95 N 3039.05 W 3358.66 N 64 48 W 1463.49 N 3102.60 W 3430.44 N 6q, 44 W 1497.15 N 3165.18 W 3501.40 N 64 41 W 1530.34 N 3227.22 W 3571.68 N 64 37 W 1563.29 N 3288.14 W 3640.84 N 64 34 W 9000.00 7529.42 7450.71 43 52. 9100.00 7601.14 7522.43 44 27 9200.00 7672.18 7593.47 44 54 9300.00 7742.39 7663.68 45 ~;3 9400.00 7812.14 7733.43 45 39 9500.00 78~J2.11 7803.40 45 34 9600.00 7951.89 7873.18 45 9700.00 8021.13 7942.42 47 3 9800.00 8087.81 8009.10 48 44 9900.00 8155.59 8076.88 45 57 N 61 2 W 3709.65 N 60 3~ W 3779.15 N 59 40 W 3949.28 N 58 53 W 3920.12 N 57 36 W 3991.29 N 56 43 W 4062.07 N 56 14 W 4132.90 N 55 22 W 4204.06 N 56 23 W 4277.53 N 60 55 W 4350.54 1.64 0.35 1.0 3 2.25 3.31 I .93 1.72 2.61 4.01 4.78 1596.54 N 3348.75 W 3709.86 N 64 30 W 1630.34 N 3409.68 W 3779.41 N 64 26 W 1665.30 N 3470.77 W 3849.61 N 64 22 W 1701.52 N 3532.0'7 W 3920.55 N 64 16 W 1739.09 N 3593.09 W 3991.83 N 64 10 W 1777.69 N 3653.21 W 4062.78 N 64 3 W 1817.17 N 3712.98 W 4133.81 N 63 55 W 1857.89 N 3772.54 W 4205.21 N 63 46 W 1900.0~. N 3833.98 W 4278.96 N 63 38 W 1938.36 N 3896.68 W 4352.17 N 63 33 W 10000.00 8226.92 8148.21 43 38 10100.00 8299.80 8221.09 42 53 10200.00 8373.78 8295.07 41 27 10300.00 8447.92 8369.21 43 24 10400.00 8518.38 8439.67 47 0 10500.00 8584.50 8505.79 50 10 10600.00 8646.32 8567.61 53 17 10700.00 8705.68 8626.97 53 45 10800.00 8764.65 8685.94 53 40 10900.00 8823.46 874~.75 54 46 N 65 7 W 4420.56 N 67 35 W' 4489.00 N 69 55 W 4556.12 N 70 5 W 4622.95 N 69 34 W 4693.65 N 68 45 W 4768.45 N 67 12 W 4846.94 N 69 33 W 4927.29 N 73 39 W 5007.54 N 74 40 W 5087.32 2.59 1.96 2.91 3.44 3.27 3.48 2.11 2 2.88 2.60 1970.06 N 3959.16 W 4422.23 N 63 32 W 1997.46 N 4021.91 W 4490.61 N 63 35 W 2021.61 N 4084.68 W 4557.5~ N 63 40 W 2044.27 N 4147.84 W 4624.25 N 63 45 W 2068.72 N 4214.43 W 4694.79 N 63 51 W 2095.37 N 4284.53 W 4769.47 N 63 56 W 2124.85 N 4357.38 W 4847.86 N 64 0 W 2154.80 N 4432.06 W 4928.12 N 64 4 W 2180.45 N 4508.62 W 5008.20 N 64 11 W 2201.97 N 4586.58 W 5087.77 N 64 21 W 11000.00 8878.80 8800.09 58 28 11100.00 8927.14 8848.~3 63 16 11200.00 8966.86 8888.15 70 23 N 74 7 W 5169.53 N 76 8 W 5255.69 N 77 40 W 5345.32 5.70 5.47 9.38 2224.54 N 4666.74 W 5169.82 N 64 30 W 2246.98 N 4751.31 W 5255.8¢ N 64 41 W 2267.14 N 4840.76 W 5345.36 N 64 54 W 11219.30 ~ TIE-IN POINT GOING FROM GCT TO MWD DATA (SEE INTERPOLATED VALUES FOR CHOSEN HORIZONS). 11300.00 8993.77 8915.06 76 34 11400.00 9014.52 8935.81 79 31 11500.00 9028.95 8950.24 ~4 15 11600.00 9033.33 8954.62 90 25 11700.00 9030.26 8951.55 92 26 11800.00 9026.24 8947.53 92 12 11900.00 9022.60 8943.89 91 57 N 77 46 W 5439.31 N 78 12 W 5534.72 N 78 41 W 5630.95 N 81 21 W 5727.29 N ~2 2 W 5822.94 N 82 5 W 5918.53 N 81 51 W 6014.17 3.48 3.20 6.48 6.27 1.19 0.28 0.41 2287.98 N 4934.69 W 5439.31 N 65 7 W 2308.61 N 5030.30 W 5534.77 N 65 lO W 2328.41 N 5127.20 W 5631.13 N 65 34 W 2345.31 N 5225.55 W 5727.73 N 65 49 W 2359.25 N 53,?.4.51 W 5823.79 N 66 6 W 2373.11 N 5423.47 W 5919.94 N 66 22 W 2387.04 N 5522.42 W 6016.24 N 66 37 W STANDARD ALASKA PRODUCTION CO. Y-2S (4¢-29-11-133 PRUDHOE BAY NORTH SLOPE, ALASKA COMPUTATION DATE: 06-JAN-89 PAGE 4 DATE OF SURVEY: 02-JAN-B9 ' KELLY BUSHING ELEVATION: 78.71 FT ENGINEER: MCBRIDE INTERPOLATEO VALUES FOR EVEN 100 FEET OF MEASUREO DEPTH TRUE SUB-SEA COURSc VERTICAL OOGLEG RECTANGULAR COORDINATES HORIZ. DEPARTURE MEASURED VERTICAL VERTICAL DEVIATION A~IMUTH SECTION SEVERITY NORTH/SOUTH EAST/WEST DIST. AZIMUTH OEPTM DEPTH OEPTM DEG MIN DEG MIN FEET OEG/IO0 FEET FEET FEET OEG MIN 12000.00 9019.95 8941.24 91 14 1Z100.00 9018.39 8939.68 90 22 12200.00 9018.28 8939.57 89 45 12300.00 9018.21 8939.50 90 22 12400.00 9017.07 8938.36 90 52 12500.00 9015.81 8937.10 90 36 12600.00 9014.79 8936.08 90 32 12700.00 9013.83 8935.12 90 33 12800.00 9012.95 8934.24 90 28 12900.00 9012.17 8933.46 90 24 13000.00 9011.30 8932.59 90 34 13100.00 9010.19 8931.48 90 39 13200.00 9009.12 8930.41 90 35 13300.00 9008.34 8929.63 90 18 13400.00 9007.79 8929.08 90 24 13418.00 9007.66 8928.95 90 24 N 81 29 W 6110.00 N 81 I W 6206.03 N 80 27 W 6302.33 N 79 12 W 6399.03 N 77 33 W 6496.35 N 77 17 W 6594.04. N 77 29 W 6691.75 N 77 29 W 6789.42 N 77 29 W 6887.09 N 77 29 W 6984.77 N 77 8 W 7082.50 N 76 41 W 7180.42 N 76 39 W 7278.36 N 76 47 W 7376.31 N 76 47 W 7676.27 N 76 47 W 7491.89 0.77 1.00 0.81 1.65 1.87 0.81 0.27 0.12 0.11 0.08 0.43 0.46 0.59 0.80 0.00 0.00 2401.57 N 5621.32 W 6112.84 N 66 51 W 2416.71 N 5720.15 W 6209.72 N 67 5 W 2432.81 N 5818.85 W 6306.94 N 67 18 W 2650.41 N 5917.27 W 6404.58 N 67 30 W 2470.56 N 6015.20 W 6502.79 N 67 40 W 2492.30 N 6112.80 W 6601.35 N 67 49 W 2514.17 N 6210.37 W 6699.98 N 67 57 W 25'35.82 N 6308.00 W 6798.62 N 68 5 W 2557.46 N 6405.62 W 6897.29 N 68 14 W 2579.10 N 6503.25 W 6996.00 N 68 22 W 2601.04 N 6600.81 W 7094.79 N 68 29 W 2623.87 N 6698.16 W 7193.75 N 68 36 W 2646.79 N 6795.49 W 7292.75 N 6~ 43 W 2669.71 N 6892.82 W 7391.78 N 68 49 W 2692.70 N 6990.15 W 7490.85 N 68 55 W 2696.81 N 7007.67 W 7508.68 N 68 57 W STANDARD aLASKA PRODUCTION CO. Y-25 C4~-29-11-13) PRUDHOE BAY NORTH SLOPE~ ALASKA COMPUTATION DATE: 06-JAN-89 PAGE 5 DATE DF SURVEY: OZ-JAN-89 " KELLY ~USHING ELEVATION: 78.71 FT ENGINEER: MCBRIDE INTERPOLATED VALUES FOR EVEN 1000 FEET OF MEASURED DEPTH TRUE SUB-SElf COURSE MEASURED VERTICAL VERTICAL DEVIATION AZIMUTH DEPTH DEPTH DEPTH DEG MIN DEG MIN VERTICAL DOGLEG RECTANGULAR COORDINATES HORIZ. DEPARTURE SECTION SEVERITY NORTH/SOUTH EAST/WEST DIST. AZIMUTH FEET DEG/IO0 FEET FEET FEET DEG MIN 0.00 0.00 -78.71 0 0 1000.00 999.98 921.27 0 12 2000.00 1999.97 1921.26 0 3 3000.00 2999.81 2921.10 3 48 4000.00 3962.71 3884.00 24 28 5000.00 4762.63 4683.92 49 6000.00 5378.03 5299.32 45 25 7000.00 6099.27 6020.56 42 48 8000.00 6831.70 6752.99 46 6 9000.00 7529.42 7450.71 43 52 N 0 0 E 0.00 S 16 27 W -3.37 S 41 43 W -1.67 N 70 20 W 2.66 N 66 54 W 250.78 N 64 25 W 834.55 N 64 34 W 1621.56 N 64 33 W 2314.19 N 63 9 W 2994.52 N 61 Z W 3709.65 0.00 0.57 0.44 2.07 1.92 1.48 3.28 1.12 0.98 1.64 0.00 N 0.00 'E 0.00 N 0 0 E 5.52 S 1.16 E 5.64 S 11 52 E 6.48 $ 1.16 W 6.58 S 10 8 W 10.20 S 7.66 W 12.76 S 36 55 W 86.41 N 236.36 W 251.66 N 69 55 W 333.10 N 765.45 W 834.78 N 66 28 W 673.24 N 1475.24 W 1621.59 N 65 28 W 968.00 N 2102.02 W 2314.20 N 65 16 W 12~3.74 N 2714.80 W 2994.53 N 65 2 W 1596.54 N 3348.75 W 3709.86 N 64 30 W 10000.00 8226.92 8148.21 43 38 11000.00 8878.80 8800.09 58 28 N 65 7 W 4420.56 N 74 7 W 5169.53 2 5.70 1970.05 N 3959.15 W ~422.23 N 63 32 W 2224.54 N 4666.74 W 5159.82 N 64 30 W 11219.30 ~ TIE-IN POINT GOING FROM GCT TO MWD DATA (SEE INTERPOLATED VALUES FOR CHOSEN HORIZONS). 12000.00 9019.95 8941.24 91 14 13000.00 9011.30 8932.59 go 34 13418.00 9007.66 8928.95 90 24 N 91 29 W 6110.00 N 77 9 W 7082.50 N 76 ¢7 W 7691.89 0.77 0.43 0.00 2401.57 N 5621.32 W 6112.84 N 65 51 W 2601.06 N 6,690.81 W 7094.79 N 68 29 W 2696.81 N 7007.67 W '7508.68 N 68 57 W STANDARD ALASKA PROOUCTION CO. Y-25 (44-29-11-133 PRUDHOE BAY NORTH SLOPEm ALASKA COMPUTATION DATF: 06-JAN-89 DATE OF SURVEY: KELLY 8USHZNG ELEVATION: 78.71 FT ENGINEER: MCBRIDE INTERPOLATED VALUES FOR EVEN 100 FEET Dm SUB-SEA DEPTH TRUE SUB-SEA COURSE MEASURED VERTICAL VERTICAL DEVIATION AZIMUTH DEPTH DEPTH DEPTH DEG MIN DEG MTN 0.00 0.00 -78.71 0 0 fl 0 0 E 78.71 78.71 0.00 0 6 S 58 4 E 178.71 178.71 100.00 0 9 S 19 25. W 278.71 278.71 ZO0.O0 0 27 S 5 11 E 378.72 378.71 300.00 0 32 S 0 5'3 E 478.72 478.71 400.00 0 33 S 5 40 E 578.73 578.71 500.00 0 34 S 15 31 E 678.73 678.71 600.00 0 24 S 18 47mJ F 778.73 778.71 700.00 0 12 S 10 7 E 878.73 878.71 800.00 0 7 S 12 13 E 978.73 978.7! 900.00 1078.73 1078.71 1000.00 1178.73 1178.71 1100.00 1278.73 1278.71 1200.00 1378.73 1378.71 1300.00 1478.73 1478.71 1400.00 1578.74 1578.71 1500.00 1678.74 1678.71 1600.00 1778.74 1778.71 1700.00 1878.74 1878.71 1800.00 0 8 S 3 36 W 0 13 S 35 53 W 0 12 S 60 19 W 012 S 72 31W 0 11 S 76 46 W 0 10 S 75 56 W 0 8 S 85 59 W 0 6 S 86 32 W 0 2 S 66 25 W 0 4 N 77 9 W 1978.74 1978.71 1900.00 ' 0 Z 2078.74 2078.71 2000.00 0 4 2178.74 2178.71 2100.00 2278.74 2278.71 2200.00 2378.74 2378.71 2300.00 2478.74 2478.71 2~00.00 2578.74 Z578.71 2500.00 2678.75 2678.71 2600.00 2778.75 2778.71 2700.00 Z878.76 2878.71 2800.00 0 13 0 16 0 17 0 26 0 31 0 25 0 30 I 28 S 87 t E S 57 50 W S I 45 W S 6 37 E S ? 7 F~ S 2 ~, W S 2 2~, E S 2 37 W S 15 27 W S 89 13 W 2978.85 2978.71 Z900.00 3 21 3079.15 3078.71 3000.00 5 20 3179.79 3178.71 3100.00 7 34 3280.99 3278.71 3200.00 9 59 3382.87 3378.71 3300.00 12 4 3485.64 3478.71 3400.00 14 23 3589.40 3578.71 3500.00 16 37 3694.38 3678.71 3600.00 18 3800.64 3778.71 3700.00 ZO 49 3908.32 3878.71 -3800.00 22 43 VERTICAL DOGLEG RECTANGULAR COORDINATES HORIZ. DEPARTURE SECTION SEVERITY NORTH/SOUTH EAST/WEST DIST. AZIMUTH FEET DEG/IO0 FEET FEET FEET DEG MIN 0.00 0.00 0.00 N 0.00 E -0.35 0.00 0.14 S 0'32 E -0.50 0.11 0.3:) S 0.37 E -0.72 0.79 0.80 S 0.42 E -1.09 0.55 1.62 S 0.45 E -1.60 0.57 2.58 S 0.57 E -2.23 0.48 3.62 S O.7B E -2.78 0.49 4.47 .S 0.99 E -3.08 0.35 4.94 S l.lO E -3.25 0.46 5.21 S 1.17 E -3.36 0.51 5.45 S 1.17 E -3.36 0.54 5.73 S 1.04 E -3.22 0.49 5.9'-) S 0.77 E -2.96 0.37 6.18 S 0.40 E -2.65 0.52 6.33 S 0.01 W -Z.36 0.39 6.41 S 0.37 W -2.13 0.45 6.45 S 0.64 W -1.93 0.28 6.48 S 0.87 W -1.81 0.34 6.49 S 1.01 W -1.73 0.49 6.47 S 1.09 W 0.00 N 0 0 E 0.35 S 66 23 E 0.54 S 43 7 E 0.90 S 27 Z9 E 1.68 S 15 Z8 E 2.6~ S 12 30 E 3.70 S 12 9 E 4.58 S 1Z 29 E 5.06 S 12 33 E 5.34 S 12 36 E -1.67 0.29 6.47 S 1.16 W -1.67 0.10 6.50 S 1.18 W -1.72 0.14 6.73 S 1.23 W -1.98 0.39 7.22 S 1.17 W -2.30 0.06 7.80 S 1.08 W -2.64 0.12 8.46 S 1.02 W -2.94 0.35 9.24 S 1.04 W -3.26 0.13 10.05 S 1.07 W -3.60 0.59 10.93 S 1.10 W -2.70 2.10 11.52 S 2.37 W 5.59 S 1Z 7 E 5.83 S 10 18 E 6.04 S 7 21 E 6.19 S 3 41 E 6.33 S 0 7 W 6.42 S 3 17 W 6.48 S 5 39 W 6.53 S 7 39 W 6.57 S El 51 W 6.56 S 9 36 W N 71 36 W 1.34 2.34~ N 68 23 W 8.93 2.18 N 68 22 W 20.21 2.25 N 68 10 W 35.65 2.13 N 68 7 W 55.09 2.26 N 67 59 W 78.73 1.72 N 67 12 W 106.34 2.29 N 65 41 W 138.27 1.87 N 65 21 W 174.18 1.76 N 67 22 W 214.08 1.79 6.57 S 10 7 W 6.61 S 10 15 W 6.84 S 10 19 W 7.32 S 9 12 W 7.87 S 7 54 W 8.52 S 6 51 W 9.30 S 6 25 W 10.11 S 6 3 W 10.99 S 5 ~4 W 11.76 S 11 37 W 10.63 S 6.41 W 1Z.41 S 31 4 W 7.96 S 13.54 W 15.70 S 59 31 W 3.81 S 24.05 W 24.35 S 80 59 W 1.91 N 38.42 W 38.46 N 87 9 W 9.20 N 56.46 W 57.Z0 N 80 44 W 18.00 N 78.43 W 80.47 N 77 4 W 28.52 N 103.99 W 107.83 N 74 39 W 41.29 N 133.27 W 139.52 N 7Z ~7 W 56.25 N 165.91 W 175.19 N 71 16 W 72.26 N 202.47 W 214.97 N 70 21 W STANDARD AL&SKA PRODUCTION CO. Y-Z5 (44-29-11-13) PRUOHOE BAY NORTH SLOPE~ ALASKA COMPUTATION DATE: 06-JAN-BO PAGE 7 DATE OF SURVEY: 02-JAN-89 · KELLY BUSHING ELEVATION: 78.71 FT ENGINEER: MCBRIDE INTERPOLATED VALUES FOR EVEN 100 ~EET OF SUB-SE~ DEPTH TRUE SU3-SEA COURSE MEASURED VERTICAL VERTICAL DEVIATION AZTMUTH DEPTH DEPTH DEPTH DEG MIN DEG MIN 4917.60 3978.71 3')00.00 Z4 46 4128.25 4078.71 4000.00 25 50 4240.38 4178.71 4100.00 28 20 4355.81 4278.71 4200.00 31 38 4475.57 4378.71 4300.00 35 0 4600.41 4478.71 4400.00 38 31 4732.13 4578.71 4500.00 42 48 4873.70 4678.71 4600.00 47 9 5024.80 4778.71 4700.00 49 45 5183.73 4878.71 4800.00 52 6 VERTICAL DOGLEG RECTANGULAR COORDINATES HORIZ. DEPARTURE SECTION SEVERI'TY NORTH/SOUTH EAST/WEST DIST. AZIMUTH FEET DEG/IO0 FEET :EET FEET OEG MIN 5349.86 4978.71 4900.00 53 23 5519.59 5078.71 5000.00 54 8 5690.89 5178.71 5100.00 54 30 5853.33 5278.71 5200.00 49 19 6000.97 5378.71 5300.00 45 24 6140.96 5478.71 5400.00 44 8 6280.24 5578.71 5500.00 44 22 6419.59 5678.71 5600.00 63 57 6558.47 5778.71 5700. O0 43 57 6696.94 5878.71 5800.00 43 46 N 66 38 W 258.10 N 64 48 W 305.46 N 65 56 W 356.16 N 65 43 W 413.78 N 65 9 W 479.65 N 64 52 W 554.34 N 64 23 W 640.03 N 64 28 W 740.17 N 64 20 W 853.42 N 64 11 W 976.92 6834.85 5978.71 5900.00 43 17 6971.94 6078.71 6000.00 42 57 7108.14 617~.71 6100.00 42 39 7243.82 6278.71 6200.00 42 28 7378.59 6378.71 6300.00 41 43 7511.90 6478.71 6400.00 41 3 7645.90 6578.71 6500.00 42 23 7783.08 6678.71 6600.00 44 0 7923.90 6778.71 6700.00 45 31 8067.96 6878.71 6800.00 46 ZO N 64 34 W 1109.56 N 64 33 W 1246.70 N 64 28 W 1385.78 N 64 23 W 1513.69 N 64 35 W 1622.26 N 65 I W 1720.22 N 64 50 W 1817.16 N 65 1 W 1914.21 N 64 42 W 2010.58 N 64 41 W 2106.35 8213.91 6978.71 6900.00 47 4 8361.30 7078.71 7000.00 47 3 8506.68 7178.71 7100.00 45 55 8650.07 7278.71 7200.00 45 9 8791.14 7378.71 7300.00 46 35 8929.80 7478.71 7400.00 43 41 9068.62 7578.71 7500.00 44 17 9209.23 7678.71 7600.00 44 59 9352.07 7778.71 7700.00 45 43 9495.15 7878.71 7800.00 45 32 N 64 47 W 2201.33 N 64 34 W 2295.10 N 64 30 W 2387.56 N 64 28 W 2479.26 N 64 25 W 2569.60 N 64 5 W 2657.74 N 64 22 W 2746.92 N 63 57 W 2840.82 N 63 3~ W 2939.93 N 63 8 W 3043.56 N 6~ 12 W 3149.80 N 62 51 W 3258.01 N 62 13 W 3363.40 N 61 51 W 3466.02 N 61 42 W 3565.35 N 61 14 W 3661.21 N 60 47 W 3757.28 N 59 36 W 3855.76 N 58 29 W 3957.19 N 56 4t W 4058.66 1.62 I .22 2.71 3.17 2.45 3.14 3.43 2 I .82 0.66 0.50 0.52 2.25 2.83 3.34 0.44 ,0.74 0.61 0.61 1.09 I .42 0.94 0.80 1.16 0.71 1.37 1.19 1.26 1.57 1.30 1.22 1.37 0.41 3.49 1.77 2.08 2.08 1.46 2.43 1.87 89.30 N 243.09 W 258.97 N 69 49 W 108.82 N 286.24 W 306.23 N 69 11 W 129.89 N 332.35 W 356.83 N 68 39 W 153.50 N 3.~4.92 W 414.40 N 68 15 W 180.99 N 444.78 W 480.19 N 67 51 W 212.46 N 512.52 W 554.81 N 67 29 W 249.23 N 589.93 W 640.41 N 67 5 W 292.38 N 680.30 W 740.47 N 66 44 W 341.26 N 7:~2.47 W 853.64 N 66 26 W 394.80 N 893.77 W 977.08 N 65 10 W 452.15 N 1013.38 W 1109.68 N 65 57 W 511.12 N 1137.20 W 1~46.78 N 65 47 W 570.68 N 1262.90 W 1385.85 N 65 40 W 626.61 N 1377.95 W 1513.73 N 65 32 W 6?3.53 N 1475.86 W 1622.29 N 65 28 W 715.27 N 1564.49 W 1720.24 N 65 25 W 756.22 N 1652.36 W 1817.19 N 65 24 W 797.38 N 1740.25 W 1914.23 N 65 22 W 838.16 N 18Z7.57 W 2010.60 N 65 21 W 878.91 N 1914.24 W 2106.37 N 65 20 W 919.62 N 2000.05 W 2201.34 N 65 18 W 959.81 N 20.,94.78 W 2295.11 N 65 16 W 999.52 N 2168.28 W 2387.57 N 65 15 W 1038.85 N 2251.12 W 2479.26 N 65 13 W 1077.80 N 2332.64 W 2569.61 N 65 12 W 1115.94 N 2412.11 W 2657.74 N 65 10 W 1154.58 N 2492.50 W 2746.92 N 65 8 W 1195.3!3 N 2577.08 W 2840.82 N 65 6 W 1239.20 N 2666.01 W -7939.93 N 65 4 W 1285.80 N 2758.63 W 3043.57 N 65 0 W 1333.93 N 2853.42 W 3149.82 N 64 56 W 1383.41 N 2949.74 W 3258.04 N 64 52 W 1432.19 N 3043.30 W 3363.45 N 64 47 W 1480.37 N 3134.07 W 3466.11 N 64 42 W 1527.41 N 3221.75 W 3565.48 N 6~ 38 W 1573.21 N 3306.18 W 3661.39 N 64 33 W 1619.59 N 3390.56 W 3757.52 N 64 28 W 1668.59 N 3476.39 W 3856.10 N 6~ 21 W 1721.00 N 3563.89 W 3957.67 N 64 13 W 1775.79 N 3650.32 W 4059.34 N 64 3 W COMPUTATION DATE: 06-JAN-89 STANDARD ALASKA PRODUCTION CO. Y-25 (44-29-11-133 PRUDHOE BAY NORTH SLOPEr ALASKA DATE OF SURVEY: O2-JAN-89 ~ KELLY BUSHING ELEVATEON: 78.71 FT ENGINEER: qCSR[DE INTERPOLATED VALUES FOR EVEN 100 FEET OF SUB-SEA DEPTH TRUE SUB-SEA COURSE MEASURED VERTICAL VERTICAL DEVIATION AZTeUTH DEPTH DEPTH DEPTH DEG M[N DEG MTN VERTICAL DOGLEG RECTANGULAR COORDINATES HORIZ. DEPARTURE SECTION SEVERITY NORTH/SOUTH EAST/VdEST DIST. AZIMUTH FEET DEG/IO0 ~EET FEET FEET DEG MIN 9638.48 797E.7! 7900.00 45 49 9786.20 ~078.7! 8000.00 48 54 9932.90 8178.71 8100.00 44 45 10071.14 8278.71 8200.00 43 8 10206.58 8378.71 8300.00 41 29 10342.9Z 8478.71 8400.00 44 55 10491.00 8578.71 8500.00 49 52 10654.50 8678.71 8600.00 53 36 10823.73 8778.71 8700.00 53 39 10999.83 8878.71 8800.00 58 27 N 55 33 W 4160.14 N 55 49 W 4267.28 N 62 25 W 4373.91 N 66 53 W 4469.32 N 70 7 W 4560.46 N 69 51 W 4652.73 N 68 49 W 4761.59 N 68 8 W 4890.73 N 74 25 W 5026.43 N 74 7 W 5169.38 1.51 2.90 4.64 2.27 2.34 3.70 3.46 2.84 2.57 5.70 1832.61 N 3735.85 W 4161.13 N 63 52 W 1894.28 N 3825.35 W 4268.67 N 63 39 W 1949.46 N 3917.29 W 4.375.5'7 N 63 32 W 1989.84. N 4003,73 W 4470,95 N 63 34 W 2023.10 N 4088.7H W 4561.91 N 63 40 W 2054.50 N 4175.93 Vd 4653.96 N 63 48 W 2092.88 N 4278.12 W 4762.61 N 63 55 W 2141.60 N 4397.89 W 4891.61 N 64 2 W 2185.71 a 4527.00 W 5027.04 N 64 13 W 2224.50 N 4666.59 W 5169.67 N 64 30 W 11219.30 *** TIE-YN POINT GOING FROM GCT TO MWO DATA (SEE INTERPOLATED VALUES FOR CHOSEN HORIZONS). t1239.55 8978.71 8900.00 74 41 13418.00 9007.66 8928.95 90 24 N 77 10 W 5382.13 N 76 47 W 7491.89 8.89 0.00 2275.32 N 4877.5~ W 5382.14 N 64 59 W 2696.81 q 7007.67 W 7508.68 N 68 57 W SCHLUMBERGER O I RE C T I ONAL, SUR V E Y COMPANY STANDARD ALASKA PRODUCTION WELL Y-2S (44-29-i1-13) FI ELD PRUOHOE BAY COUNTRY USA RUN ONE DATE LOGGED 02 - JAN - 89 REFERENCE '7308S WEL'L' Y-25 (44-29-11-13) HORIZONTAL PROJECTION (1402' SNL, 168' WEL, SEC 33, TllN, R13E) NORTH 80O0 SO00 4000 2000 -2000 -40OO -8000 HEST REF 7308S SCALE : 1/2000 IN/FT -10000 -8000 -GO00 -4000 -2O00 0 2000 4000 6000' EIqST WELL' Y-25 (44-29-11-13) (1402' SNL, ~68' WEL, SEC 33, TllN, R13E) VERTICAL PROJECTION -4000 -2000 0 0 ZOO0 4000 6000 8000 10000 ...L.,..+..; ....... ?'..+.+..'; ....... ;..+..L.~...4...~...,...~...~ ....... t..+..,...+...;...,...+..';...-:.. ....... t...t.-+4:..-H---?--:----.:'.-.-t-.-?---;.--:--.?---bt---:--+.-t ....... 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SCRLEB IN VERTICAL DEPTHS HORIZ SCALE = 1/2000 IN/FT GREAT LAND DIRECTIONAL DRILLING INC. REPORT OF SUB-SURFACE DIRECTIONAL SURVEY mm~mmmmmm~m~mmmmmmmm~~~~~~~~~ STANDARD ALASKA PRODUCTION COMPANY COMPANY WELL # Y-25 WELL NAME PRUDHOE BAY LOCATION AL1188-D39 SINGLE SHOT & MWD 11/29/88 mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm JOB NUMBER TYPE SURVEY DATE mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmemmmmmmmmmmmmmmmmmmmmmmmmmmmm NAME TITLE SIGNATURE 110 FT 13418 FT DEPTH INTERVAL FROM TO lO/3O/8~ 11/25/88 DATE SURVEY TAKEN FROM TO THIS IS A RECORD OF A SUB-SURFACE SURVEY OF YOUR WELL WE HAVE RETAINED A COPY OF YOUR SURVEY REPORT IN OUR FILES FOR YOUR CONVENIENCE; HOWEVER, SHOULD YOU SO DESIRE, ALL COPIES OF THE SURVEY REPORT WILL BE FORWARDED TO YOU ON WRITTEN REQUEST. ALL SU.R~V~,YS ARE CONFIDENCE. !~ ~ ~ ~' ~ ~ t,--~ -3.1~e~.~ . ..~ GREAT LAND DIRECTIONAL. DRILLING, C]Jent .............. : STANDARD ALASKA PRODUCTION CO. We]] ................. : Y-2S Vest,ca] Section at.: N 75.00 W Magnet~.c Declination: 3]. de~ 30 mJn E Data fJ]e name ...... : B:PY25D.DAT RECORD OF SURVEY (We]] assumed vest,cai to MD of ComputatJ. on: RADIUS OF CURVATURE Survey date- ].].-29-88 Method ..... : SINGL.E SHOT & MWD RKB Height.: 78.? ft 1].0.01 ].]./29/88 MEAS DRIFT TRUVERT SUBSEA SECT ION DEPTH DG MN DEPTH DEPTH DIST DIRECTION RELATIVE COORDINATES ANGLE FROM WEL.L.-HEAD I10 445 978 1380 19_1.2 0 0 110.00 31.29 0 45 444.99 366.28 0 1S 977.97 899.26 0 ].S ].379.96 ].30]..25 0 1S 1911.96 ].833.25 0.00 N 0.00 E -]..].9 S ].8.00 E -1.90 S 30.00 W -1.16 S SO.O0 W O.68 N 2.OO W 0.00 N 0.00 E 2.09 S 0.68 E 6.58 S 0.21 E 7.9]. S 0.92 W ?.:].S S 2.62 W 2668 2848 2942 3006 3].00 0 30 2667.94 2589.23 1 0 2847.93 2769.22 2 24 2941.88 2863.17 3 36 3005.79 2927.08 S 36 3099.49 3020.78 3.79 S 2.00 W 4.66 S 74.40 W 7.30 N 77.80 .W ].0.65 N 7]..50 W ].8. ].5 N 66.60 W 7.].S S S.84 W 8.88 S 7.20 W 8.97 S 9.96 W 8.08 S ].3. ].9 W S.39 S 20.23 W 3].94 7 42 3].92.85 3].].4.].4 3289 ].0 6 3286.70 3207.99 3383 ].2 0 3378.95 3300.24 3478 14 0 347]..S]. 3392.80 3573 16 12 3563.23 3484.52 28.92 N 67.00 W 43.49 N 68.00 W 6]..38 N 68.30 W 82.S7 N 66.90 W 107.OS N 66.20 W 1.].0 S 30.24 W 4.53 N 43.8]. W 11.23 N 60.53 W 19.37 N 80.29 W 29.22 N 102.99 W 3677 18 6 3662.60 3583.89 3762 19 S4 3742.96 3664.25 3856 21 42 3830.83 3752.].2 3950 23 ].8 39].7.67 3838.96 4043 25 6 4002.S0 3923.79 ].37.24 N 63.80 W ].64.40 N 64.].0 W 197.27 N 65.90 W 232.83 N 66.60 W 270.48 N 65.S0 W 42.].8 N ].30.78 W S4.33 N 155.64 W 68.44 N 185.89 W 82.93 N 218.82 W 98.40 N 253.66 W 4174 26 24 4120.49 404]..78 4301 30 6 4232.34 4].53.~3 4427 33 S4 4339.].8 4260.47 4554 37 18 4442.42 4363.7]. 4680 41 0 4540.12 4461.4]. 326.53 N 64.S0 385.65 N 64.80 451.32 N 64.S0 S24.00 N 64.S0 602.12 N 63.80 122.45 N ].48.].8 N 176.77 N 208.59 N 243.27 N 305.24 W 359.55 W 4].9.88 W 486.60 W S58.17 W CLOSURE DISTANCE DG MN S 0.00 N 0 0 0 E 2. ]9 S 18 0 0 E 6.S8 S ]. 47 2]. E 7.97 S 6 36 ].7 W 7.62 S 20 7 58 W 9.24 S 39 ].4 .1.1 W ].]..44 S 39 2 ].2 W 13.40 S 48 0 59 W ].S.47 S S8 30 44 W 20.94 S 75 S 30 W 30.26 S 87 55 ].3 W 44.05 N 84 6 8 W 6]..57 N 79 29 22 W 82.60 N 76 26 2 W 107.06 N 74 9 36 W 137.42 N 72 7 28 W ].64.86 N 70 45 24 W 1.98.09 N 69 47 ].8 W 234.01. N 69 14 41W 272.08 N 68 47 S1W 328.88 N 68 8 27 W 388.89 N 67 36 6 W 455.57 N 67 ].0 9 W S29.42 N 66 47 48 W 608.88 N 66 27 4 W DOG LEG 0.000 O. 224 O. 094 0.000 0.000 0.033 0.278 1.490 1.875 2.].28 2. 234 2. S27 2. r'~,~ 1. 840 2. 118 1. 933 1.706 1. ~47 1. 004 2.9].4 3.0].7 2. 677 2. 946 Y-2S RECORD OF SURVEY NEAS DRIFT TRUVERT SUBSEA SECTION DEPTH DG MN DEPTH DEPTH DIST ANGLE 4958 48 S4 473~.71 4458.00 794.49 N 43.40 S179 $2 0 4877.42 4798,7]. 94].,40 N 43.40 $461 S4 4 S044.92 4948.22, 1182,15 N 43.40 S6].9 S4 18 S139.3S S040.44 ].307.8]. N 44.00 S843 49 24 S277.47 S].98.94 1480.S0 N 43.40 DIRECTION REL.AT IVE COORDINATES FRON WE[.I...- HEAD 330.S3 N 733.94 W 404,82 N 884.32. W 507.72 N 1087.81W S44.S0 N ].202.49 W 442.S2 N ].340.S4 W S969 45 42 S342.70 S283.99 1571,S0 N 43.10 W 6].54 44 ].8 S493.S1 S414.80 ].499.S0 N 63.].0 W 6343 44 0 $629.].2 S550.41 ].828,22 N 42.70 W 4532 43 S4 S745.19 S686.48 ].956.31 N 42.40 W 672]. 43 48 S90]..49 S822.78 2084.17 N 42.70 W 684.34 N ],443.56 W 743.SS N 1540.22 W 803.52 N ].477.42. W 843.98 N ].793.82 W 924.34 N 1910.01 W 7005 42 48 4108.18 4029.47 2274.35 N 42.40 W 1014.12 N 2082.85 W 7394 4]. 42 4394.].2 43].7.4]. 2529.40 N 62.00 W 1,1.36.11N 23].4.21W 7641 42 30 6579.38 4500.67 2691.19 N 43.40 W 1212.05 N 244]..34 W 79S4 4S S4 480S.18 4724.47 2904.02. N 62.70 W 13,1.1.S7 N 26S7.08 W 8239 47 ].8 6999.42 4920.9,1. 3].04.63 N 62.00 W ].406.99 N 2839.22 W 8492 46 0 7].73.29 7094.S8 328S.S1 N 61.00 W ,1.494.77 N 3000.89 W 8449 4S 12 7283.].3 7204.42 3394.].9 N 60.30 W 1S49.7S N 3098.67 W 8806 43 S4 7395.02 73].4.31 3500.42 N S9.90 W ].404.45 N 3194.14 W 9059 44 24 7574.55 7497.84 3670.31 N 58.80 W ].494.49 N 3345.75 W 931]. 4S 36 77S4.73 767G.02 3840.47 N S4.70 W 1789.S7 N 3494.44 W 96S7 44 12 7995.52 79].4.8]. 4073.85 N S3.20 W ].932.24 N 3499.8]. W 9910 45 12 8,1.72.22 8093.51 4246.33 N 41.70 W 2029.57 N 3852.30 W 10158 42 12 8351.49 8272.78 4415.40 N 70.40 W 2099.05 N 4008.72 W 10323 44 42 ' 8471.27 8392.56 4S28.47 N 70.10 W 2,1.37.39 N 4,1.,1. S.51 W ,1.0414 48 6 8S3S.39 84S4.68 4S9S.SS N 49.70 W 2140.S3 N 4178.7S W 10513 SO S4 8598.38 85].9.47 4468.89 N 68.30 W 2,1.86.94 N 4247.60 W I0758 S3 48 8748.02 84~9.31 4862.15 N 72.20 W 2252.49 N 4430.11 W 10890 S4 42 8825.14 8746.43 4969.22 N 74.30 W 2283.36 N 4532.69 W 10934 S6 4 8850.13 877]..42 S005.43 N 73.30 W 2293.47 N 4547.47 W 11013 60 36 8891.57 8812.86 S072.60 N 71.90 W 2313.S7 N 4431.42 W CLOSURE DISTANCE DG MN S 804.95 N 65 45 23 W 975.21 N 45 20 4]. W ].200.46 N 44 58 47 W 2.328.58 N 44 SI 23 W ].504.64 N 64 43 ,1. S W 1S97.S7 N 64 38 7 W ].728.34 N 64 3]. 9 W ].8S9.94 N 44 24 ].7 W ,1.9~]..04 N 64 ].4 57 W 2,1.21.92 N 64 10 32 W 23,1.4.42 N 64 2 20 W 2578.04 N 43 SI 9 W 2743.60 N 63 44 58 W 2943. ].6 N 43 43 43 W 3,1.68.72 N 43 38 2,1.W 3352.54 N 63 3,1. 18 W 3444.40 N 63 25 44 W 3574.54 N 43 ].9 35 W 3750.37 N 43 8 23 W 3927.80 N 42 S3 44 W 4,1,73.99 N 62 25 27 W 43S4.24 N 42 13 4 W 4S2S.02 N 62 21 4S W 4437.44 N 42 33 18 W 4704.23 N ~2 39 3S W 4777.S4 N &2 4S 27 W 4949.87 N 43 2 56 W S07S.33 N 43 IS 47 W 5I!0.94 N 63 20 15 W S177.31 N 63 27 26 W DOG LEG deg/100 2. 843 ,1..403 2. :1.93 2. 939 O. 7S7 O. 189 O. 093 O. 093 O. 3S5 O. 286 0.415 1.08S 0.512 . O. 837 O. 290 O. 639 O.SSS 1.737 1.992 1.S,1.8 3.~64 3.0].5 ,1.. 573 1. 260 3. S46 S. 853 Y-2S ].].129/88 RECORD OF SURVEY MEAS DRIFT TRUVERT SUBSEA SECTION DIRECTION REL. AT~VE COORDINATES CLOSURE DEPTH DG NN DEPTH DEPTH DIST ANGLE FRON WELL-HEAD DISTANCE DG NN S ].].042 62 6 8905.47 8826.76 S098.03 N 73.60 W 2321.12 N 4655.93 W S202.43 N 63 30 9 W 1].074 62 48 8920.27 8841.56 5].26.40 N 74.70 W 2328.87 N 4683.22 W S230.31 N 63 33 35 W 11105 64 30 8934.03 8855.32 S154.17 N 74.70 W 2336.20 N 47].0.0]. W 5257.57 N 63 37 6 W 1].].37 66 48 8947.23 8868.52 S183.32 N 74.70 W 2343.89 N 4738.13 W S286.].8 N 63 40 44 W 11167 69 ].8 8958.44 8879.73 S211.15 N 75.00 W 2351.16 N 4764.99 W S313.48 N 63 44 ].4 W I].20]. 72 6 8969.68 8890.97 5243.23 N 74.70 W 2359.54 N 4795.96 ].1233 74 30 8978.87 8900.].6 S273.87 N 77.S0 W 2366.9]. N 4825.70 1].265 75 24 8987.].8 8908.47 $304.74 N 77.80 W 2373.52 N 4855.89 ].].297 76 30 8994.95 89].6.24 S335.75 N 77.80 W 2380.08 N 4886.23 11328 77 ].8 900]..97 8923.26 S365.91 N 77.50 W 2386.53 N 4915.73 S344.96 N 63 48 ].2 W S374.91 N 63 S2 23 W S404.93 N 63 57 4 W S43S.07 N 64 I 46 W S464.42 N 64 6 ].4 W 11360 78 12 9008.76 8930.05 S397.15 N 77.80 W 2393.22 N 4946.27 ].].392 79 ].8 9015.01 8936.30 S428.49 N 78.20 W 2399.75 N 4976.97 ].].423 80 ].2 9020.52 8941.81 S458.94 N 78.20 W 2405.99 N S006.83 ].1456 8]. 30 9025.77 8947.06 549]..47 N 78.50 W 2412.56 N S038.74 1].487 83 24 9029.84 8951.].3 5522.14 N 78.20 W 24].8.77 N 5068.84 S494.83 N 64 10 49 W SS25.31 N 64 15 29 W SS54.92 N 64 20 2 W SS86.54 N 64 24 S3 W S6].6.37 N 64 29 2S W Iq. SSI 87 36 9034.86 8956.].S SS85.74 N 80.60 W 2430.S0 N S13]..53 W 11582 89 42 9035.S? 8956.88 S6].6.57 N 8]..00 W 2435.46 N S].62.].2 W 1].652 92 30 9034.25 8955.54 S686.07 N 82.40 W 2445.56 N S231.37 W 1].747 92 18 9030.27 895]..56 S780.23 N 82.10 W 2458.36 N S325.42 W 11843 92 ].2 9026.S0 8947.79 S875.42 N 82.10 W 2471.54 N S420.43 W S678.03 N 64 39 2]. W 5707.80 N 64 44 32 W S774.77 N 64 S6 42 W 5865.46 N 65 13 ].4 W 5957.32 N 65 29 19 W 11936 91 48 9023.26 8944.55 S967.69 N 81.70 W 2484.64 N SS12.45 W 12062 90 42 9020.51 8941.80 6092.85 N 81.30 W 2503.26 N S637.03 W 12157 89 54 9020.01 8941.30 6].87.33 N 80.60 W 2518.20 N S730.85 W 12251 89 36 9020.42 8941.71 6280.9]. N 80.30 W 2533.80 N 5823.55 W 12345 91 6 90].9.85 8941.14 6374.64 N ?8.20 W 2551.33 N 59].5.89 W 6046.53 N 65 44 ].S W 6].67.86 N 66 3 19 W 6259.71 N 66 ].6 44 W 6350.89 N 66 29 il W 6442.59 N 66 40 ].6 W 12440 90 42 9018.36 8939.65 6469.52 N 77.10 W 2571.64 N 6008.67 W ].2566 90 30 90].7.04 8938.33 6595.42 N 77.S0 W 2599.34 N 613]..59 W 12662 BO 36 9016.11 8937.40 669]..32 N 77.S0 W 2620.12 N 622S.31 W ].2756 90 30 9015.21 8~36.50 6785.23 N 77.50 W 2640.46 N 63].7.07 W ].2~14 ~0 24 90].3.97 8935.26 6943.07 N 77.S0 W 2674.66 N 647]..32 W 6S3S.86 N 66 49 47 W 66S9.80 N 67 1 36 W 67S4.22 N 67 10 29 W 6846.71 N 67 18 56 W 7002.27 N 67 32 39 W DOG LEG d~g/].O0 6.908 3. 490 , 4 75. ~8 8. 379 8.274 ].]..057 2.946 3.438 2.740 2.952 3.643 2.903 4.039 6.203 4.470 O. 379 O. 104 0.608 O. 929 1.1].9 0.451 2.745 1. 232 O. 355 O..1.04 O. ].06 O. 063 Y-2S RECORD OF SURVEY MEAS DRIFT TRUVERT SURSEA SECTION DEPTH DG MN DEPTH DEPTH DIST DIRECTION RELATIVE COORDINATES ANGLE FROM WELL-HEAD 1300~ ~0 38 ~013.14 8~34.43 7037.~ N 77.10 W ~S.SS N ~S~3.~ W 1.3].~ 90 42 9011.3~ R932.~5 7194.91 N 7~.40 W 2731.S3 N ~71~.80 W 13259 90 24 9010.47 R931.7~ 7287.8~ N 77.10 W 275~.84 N ~807.32 W ].3353 90 ].2 ~00~.~8 8~31.27 7381.81 N 7~.40 W 2774.3~ N ~898.82 W ].3385 90 24 ~00~.81 8931.10 74].3.80 N 7~.80 W 2781.80 N ~92~.95 W 13418 90 3~ 9009.S2 8930.8]. 744~.78 N 7~.80 W ~789.34 N ~2.07 W CLOSURE DISTANCE DG MN S 7095.~1 N ~7 40 27 W 7250.98 N ~7 52 ].2 W 7342.87 N ~7 58 55 W 743S.79 N ~8 S 32 W 74~7.44 N ~8 7 43 W 7S00.0~ N ~8 9 ~0 W DOG LEG deg/100 0.471 0.450 0 ]..397 0 Y-2S DATA INTERPOLATED FOR EVEN ].00 FEET OF SUBSEA DEPTH 1.1./29/8B MEAS. DEPTH 379 479 TRU VERT SUB SEA ND-TVD VERTICAL. DEPTH DEPTH DIFF. CORRECT 79 0 0 0 ].79 100 0 0 279 200 0 0 379 300 0 0 $79 400 0 0 579 S79 SOO 0 0 879 879 ~00 0 0 779 779 700 0 0 879 879 800 0 0 979 979 900 0 0 1079 1179 1279 ].379 1479 :].57~ 1879 .'].779 1879 1979 2079 2].79 2279 2379 247.9 257.9 2879 2779 287.9 2979 1079 1000 0 0 ].].79 1100 0 0 ].279 ].200 0 0 ].379 ].300 0 0 ].479 ].400 0 0 ].579 1500 0 0 1879 ].800 0 0 ].779 ].700 0 0 ].879 1800 0 0 ].979 ]..900 0 0 2079 2000 0 0 2179 2100 0 0 2279 2200 0 0 2379 2300 0 0 2479 2400 0 0 2579 2500 0 0 2879 2600 0 0 2779 2700 0 0 2879 2800 0 0 2979 2900 0 0 RELATIVE COORDINATES FROM WELL-HEAD 0.00 0.00 0.43 S 0.].4 E ]..OS S 0.34 E ]..87 S 0.54 E 2.37 S 0.85 E 3.2]. S 0.58 4. OS S 0.47 4.90 S 0.38 S.74 S 0.29 8.58 S 0.20 6.91 S 0.08 W 7.24 S 0.35 W 7.58 S 0.83 W 7.91 S 0.91 W 7.77 S 1.23 W 7.83 S ]..SS W 7.49 S ]..87 W 7.34 S 2.20 W 7.20 S 2.52 W 7.].5 S 2.9]. W 7.15 S 3.33 W 7.15 S 3.78 W 7.15 S 4.'1.8 W 7.].5 S 4.8]. W 7.15 S S. 04 W 7. ].5 S S.48 7.28 S 5..92 8.22 S 8.88 8.9]. S 8.1]. 8.48 S 11.82 ¸'9 Y-2S DATA INTERPOLATED FOR EVEN ].00 FEET OF SUBSEA DEPTH 1]./2~/88 MEAS. TRU VERT SUB SEA MD-TVD VERTICAL. DEPTH DEPTH DEPTH DIFF. CORRECT 3O79 3].80 328]. 3383 348S 3S89 3594 3800 3908 40].7 4128 4240 43S8 4476 480]. 473S 4878 S024 S181 S348 SS1S S883 S84S 8133 6273 6412 ~SS1 ~827 3079 3000 0 0 3].79 3].00 ]. 1 3279 3200 2 ]. 3379 3300 4 2 3479 3400 8 2 3S79 3S00 ].0 4 3879 3600 ].S S 3779 3700 2]. 6 3879 3800 29 8 3979 3900 38 9 4079 4000 4].79 4].00 8]. ].2 4279 4200 77 ].6 4379 4300 97 20 4479 4400 ].22 2S 4S7~ 4S00 ].S8 34 4879 4800 ].97 4]. 4779 4700 24S 48 4879 4800 302 S7 4979 4900 369 87 S079 SO00 436 87 S179 S].O0 S04 68 S279 S200 S88 62 S379 S300 8].3 47 S479 S400 6S4 41 SS79 SSO0 894 40 S67~ S600 733 39 S77~ S700 772 3~ S87~ S800 8].0 38 S97~ S900 848 38 REL.AT]VE COORDINATES FROM WEL.L.-HEAD 5.98 S ].8.67 1.TS S 28.72 4.0S N 42.88 ].]..2]. N 80.49 20.].S N 82.07 3]..24 N ].07.32 W 44.82 N ].35.77 W 60.07 N ].87.95 W 78.43 N 204.05 W 94.08 N 243.8~ W ].].3.94 N ].3S.8S N ].80.S9 N ].88.95 N 221.47 N 288.97 W 333.S]. W 38S.73 W 44S.43 W S].3.].8 W 2~0.40 N 304.78 N 3S3.30 N 407.S9 N 4~7. ].2 N 882.09 W 779.43 W 887.8S W ].008.72 W S27.25 N 588.70 N ~43.03 N 89].. ~]. N 73~. 8S N 1].27.32 W ].247.8]. W ].38].. S7 W ].4S7.84 W IS47.02 W 78].. 22 N 82S. SS N 8~9.97 N ].4.2S N .gS7.88 N ].833.8S W ].7].9.83 W ].80S.34 W ].8~0.S9 W ].~74.S8 W DATA INTERPOLATED FOR EVEN 100 FEET OF RUBSEA DEPTH ].].129188 MEAS. TRU VERT SUB SEA MD-TVD VERTICAL. DEPTH DEPTH DEPTH D ] FF. CORRECT 7].00 7235 7370 7SOS 7840 7780 79].9 8083 8209 8354 8500 8643 8783 8~23 9062 9203 9345 948~ 9776 10057 I0].95 ].0334 10483 10645 1081]. ].0988 ].].232 6079 8000 888 38 8].79 6].00 92]. 35 8279 8200 956 35 6379 6300 99]. 35 8479 6400 1026 35 6579 8500 ].08]. 35 6679 6600 ].].01 40 8779 6700 ].].40 39 8879 8800 ].],84 44 897~ 6900 ].230 48 7079 7000 ].275 45 7].7~ 7].00 ].32]. 48 7279 7200 ].36# 43 7379 7300 ].404 40 7479 7400 1444 40 7579 7500 ].483 39 7679 7800 ].524 4]. 7779 7700 ].566 42 7879 7800 16].0 44 7979 7900 ].654 44 8079 8000 ].897 43 8179 8100 1740 43 8279 8200 ].778 38 8379 8300 1818 38 8479 8400 ].855 39 8579 8500 ].904 49 8679 8600 ],986 62 8779 8700 2032 88 8879 8800 2].09 77 8979 8900 2253 144 RELATIVE COORDJNATES FROM WEt.L-HEAD 1001.32 N ].044.00 N 1088.37 N ].].28.73 N ].].70.33 N 2058.2]. W 2].39.52 W 22].9.87 W 2300.22 W 2380.52 W ].2].]..77 N 1255.83 N ].299.90 N 1347.85 N ].398.73 N 2480.82 W 2547.48 W 2834.].4 W 2725.98 W 28].9.83 W ].448.98 N 1497.48 N 1547.53 N ].598.85 N ].646.07 N 29].2.85 W 3005.72 W 3094.73 W 3].80.23 W 3284.04 W ].895.64 N ].749.00 N ].803.77 N 1863.02 N 1922.28 N 3347.58 W 3432.].4 W 35].6.89 W 380]..15 W 3685.82 W ].978.06 N 2032.09 N 2070.84 N 2].07.76 N 2140.08 N 377]..81W 3857.97 W 3945.22 W 4032.99 W 4122.85 W 2178.7]. N 2222.].4 N 2284.77 N 2307.33 N 2388.78 N 4228.09 W 4345.57 W 4470.93 W 4811.72 W 4825.18 W .) Y-2S DATA INTERPOLATED FOR EVEN .1.000 FEEET OF MEASURE..D DEPTH MEAS. TRU VERT SUB SEA DEPTH DEPTH DEPTH 1000 978 89P 2000 .1.9].2 .1.833 3000 2942 28G3 4000 ~17 3838 SO00 473~ 4~S7 8000 S3GR S283 7000 S90.1. 8000 680S 9000 73~S 73].~ 10000 8].72 8093 1].000 88S0 877]. ].2000 ~023 8944 13000 90].4 8~3S RELATIVE COORDINATES FROM WELi..-HEAD 8.8S S 0.].4 E 7.1S S 3.00 W 8.].~ S ].2.8P W ~]..2S N 237.SS W 34S.03 N 7~2.~]. W &.g4.28 N .1.0].2.S4 N 132~. 40 N 1~73. S4 N 20S4.78 N .1.4&3..1.1W 207P.81W 2&8S.40 W 33].0.3P W 3P0~.07 W 23].0.2~ N 2494.10 N 2893.S7 N 4E;21.07 W SS7S. 73 W &SSS. 22 W 700 i400 2i00 2800 3500 4200 4900 T 5600 V 6300 D 7000 7700 B400 9100 9BO0 i0500 ii200 ilgo0 i2600 -700 700 i400 2tO0 2800 VERTICAL SECTION STANDARD ALASKA PRODUCTION CO. Y-25 SECTION AT N 75.00 W TVD SCALE: ! inch = 1400 feet DEP SCALE: ! inch = 1400 feet DRAWN : ii/29/88 Marker Identification a) TO MD 'I'VD DEPRT i34i8 90i0 7447 3500 4200 Departure 4900 5600 6300 7000 7700 Harker Identification ND TVD DEPRT A) KB 0 0 0 B) TO ~34J8 90t0 7447 HORIZONTAL VIEW STANDARD ALASKA PRODUCTION CO. Y-25 CLOSURB 7500 ft N 68.2 W DECLINATION: 3t.50 deg E SCALE: t lnch= t400 feet DRAWN :'tt/29/88 9i00 8400 77O0 7OOO 63OO 5600 4900 4200 3~00 2800 2tO0 t400 700 700 7700 7000 6300 5600 4900 4200 3500 2800 2:1.00 t400 700 0 700 [ TELECD1 Teleco O.fie~d Se,~'-~;~ of n~,=~, Inc. 6116 Nielson Way Anchorage, AK 99502 (907) 562-2646 November 29, 1988 JOB #665 STANDARD ALASKA PRODUCTION CO. WELL: Y-25 PRUDHOE BAY RIG: NABORS 1SE Attached please find a copy of the computer calculated MWD directional surveys for the above mentioned well. Teleco appreciates this opportunity to provide service to Standard Alaska Production Company. Teleco is committed to providing the highest quality MWD service and we would welcome any comments or questions concerning these surveys or any of our other services. Sincerely, RECEIVED Dave Reimer Field Service Supervisor DR/el Enclosures Oil .& Gas Cons. Commis~ . , A ~9NIt'I' COMPANY TELECO OILFIELD SERVICES JOB 665 SURVEY CALCULATIONS **************************************** Date 11/29/88 Page 1 Company: STANDARD ALASKA Well: Y-25 Location: PRUDHOE BAY Rig: NABORS 18-E TELECO Job # TAK 665 Grid CorreCtion: Magnetic Declination: Total Correction: Proposed Direction: 0.00 degrees 30.80 degrees 30.80 degrees 285.00 degrees RADIUS' OF CURVATURE CALCULATION **************************************** MEAS DIRECTION TRUE VERTICAL COORDINATES CLOSURE DOG LEG DEPTH INCL AZIMUTH BEARING VERT DEPTH SECTION N/S E/W DIST ANGLE SEVERITY feet deg deg deg/min feet feet feet feet feet deg deg/100 ' **************************************************************************************************** SPERRY SUN GYRO SURVEY 2668.00 0.5 188.0 S 08 00 W 2667.98 1.82 7.16S 5.85W 9.24 S 39.250W 0.000 TELECO MWD SURVEYS 3006.00 3.6 288.5 N 71 30 W 3005.83 10.77 8.03S 13.30W 15.54 S 58.885W 1.942 3100.00 5.6 293.4 N 66 36 W 3099.52 18.26 5.33S 20.34W 21.03 S 75.300W 2.166 3194.00 7.7 293.0 N 67 00 W 3192.88 29.04 1.04S 30.34W 30.3~ S 88.021W 2.234 2942.00 2.4 282.2 N 77 48 W 2941.92 7.42 8.91S 10.07W 13.45 S 48.493W 1.687 2848.00 1.0 254.4. S 74 24 W 2847.96 4.78 8.83S 7.31W 11.47 S 39.629W 0.512 TELECO Job # TAK 665 MEAS DIRECTION TRUE VERTICAL DEPTH INCL AZIMUTH BEARING VERT DEPTH SECTION feet deg deg deg/min feet feet 11/29/88 Page 2 COORDINATES CLOSURE DOG LEG N/S E/W DIST ANGLE SEVERITY feet feet feet deg deg/100 ' 3289.00 10.1 292.0 N 68 00 W 3286.73 43.61 4.57N 43.92W 44.16 N 84.054W 2.532 3383.00 12.0 291.7 N 68 18 W 3378.98 61.49 11.28N 60.64W 61.68 N 79.464W 2.022 3478.00 14.0 293.1 N 66 54 W 3471.54 82.69 19.42N 80.40W 82.71 N 76.419W 2.131 3573.00 16.2 293.8 N 66 12 W 3563.26 107.16 29.27N 103.10W 107.17 N 74.151W 2.324 3667.00 18.1 295.2 N 64 48 W 3653,.08 134.50 40.76N 128.32W 134.64 N 72.377W 2.068 3762.00 19.9 295.4 N 64 36 W 3742.90 164.93 53.98N 156.28W 165.34 N 70.945W 1.896 3856.00 21.7 294.5 N 65 30 W 3830.77 197.80 68.06N 186.55W 198.57 N 69.956W 1.945 3950.00 ' 23.4 293.4 N 66 36 W 3917,58 233.41 82.69N 219.49W 234.55 N 69.356W 1.863 4043.00 25.1 294.5 N 65 30 W 4002.37 271.14 98.19N 254.39W 272.69 N 68.893W 1.891 4174.00 26.4 295.5 N 64 30 W 4120.36 327.19 122.25N 305.97W 329.49 N 68.221W 1.046 · 4301.00 30.1 295.2 N 64 48 W 4232.21 386.31 147.98N 360.28W 389.49 N 67.671W 2.916 4427.00 33.9 295.5 N 64 30 W 4339.04 451.98 176'.56N 420.61W 456.17 N 67.229W 3.019' 4554.00 37,3 295.5 N 64 30 W 4442.29 524.65 208.41N 487.32W 530.01 N 66.845W 2.677 4680.00 41.0 296.2 N 63 48 W 4539.99 602.77 243.09N 558.89W 609.47 N 66.493W 2.957 4958.00 48.9 296.6 N 63~ 24 W 4736.58 795.14 330.35N 734.68W 805.53 N 65.789W 2.844 5179.00 52.0 296.6 N 63 24 W 4877.28 962.03 406.71N 886.98W 975.79 N 65.367W 1.403. 5461.00 54.1 296.6 N 63 24 W 5046.79 1182.74 507.72N 1088.42W 1201.02 N 64.992W 0.745 , . TELECO Job # T~K 665 11/29/88 Page 3 MEAS DIRECTION TRUE VERTICAL COORDINATES CLOSURE DOG LEG DEPTH INCL AZIMUTH BEARING VERT DEPTH SECTION N/S E/W DIST ANGLE SEVERITY feet deg deg deg/min feet feet feet feet feet deg deg/100~ 5619.00 54.3 296.0 N 64 00 W 5139.21 1308.41 564.49N 5843.00 49.4 296.6 N 63 24 W 5277.54 1481.09 642.52N 5969.00 45.7 296.9 N 63 06 W 5362.57 1572.10 684.36N 6154.00 44.3 ' 296.9 N 63 06 W 5493.38 1700.09 743.61N 6343.00 44.0 297.3 N 62 42 W 5628.99 1828.81 803.58N 6532.00 43.9 297.6 N 62 24 W 5765'.05 1956.90 864.05N 1203.31W 1329.14 1361.18W 1505.20 1444.18W 1598.13 1560.81W 1728.90 1678.00W 1860.49 1794.41W 1991.61 N 64.868W 0.333 N 64.731W 2.198 N 64.645W 2.942 N 64.526W 0.757 N 64. 411W 0.217 N 64.288W 0.122 6721.00 43.8 297.6 N 62 24 W 5901.36 2084.66 924.77N 1910.41W 2122.47 N 64.170W 0.059 7005.00 42.8 297.6 N 62 24 W 6108.04 2274.72 1015.08N 2082.97W 2317.15 N 64.019W 0.352 7394.00 41.7 298.0 N 62 00 W 6395.98 2529.77 1137.06N '2314.33W 2578.58 N 63.835W 0.291 2461.48W 2744.14 2657.21W 2963.69 2839.34W 3169.25 3001.02W 3353.10 3193.98W 3574.63 3345.59W 3750.45 3496.28W 3927.88 3699.65W 4174.07 7641.00 42.5 296.6 N 63 24 W 6579.25 2691.56 1213.01N 7956.00 45.9 297.3 N 62 42 W 6805.04 2906.37 1312.52N 8239.00 47.3 298.0 N 62 00 W 6999.48 3107.00 1407.94N · 8492.00 46.0 299.0 N 61 00 W 7173.15 3285.88 1495.73N 8806.00 43.9 300.1 N 59 54 W 7395.37 3500.59 1605.13N 9059.00 44.4 301.2 N 58 48 W 7576.90 3670.28 1694.96N 9311.00 45.6. 303.3 N 56 42 W 7755.08 3840.44 1790.04N 9657 . 00 46 . 2 306 · 8 N 53 12 W 7995.87 4073 . 82 1932 . 71N N 63.766W 0.499 N 63.713W 1.090 N 63.625W 0.526 N 63.508W 0.589 N 63.318W 0.713 N 63.132W 0.362 N 62. 888W 0. 758~ N 62.417W 0.747 TELECO Job # T~K 665 MEAS DIRE CT I ON TRUE VERTICAL DEPTH INCL AZIMUTH BEARING VERT DEPTH SECTION feet deg deg deg/min feet feet 11/29/88 COORDINATES N/S E/W feet feet Page 4 CLOSURE DOG LEG DIST ANGLE SEVERITY feet deg deg/100 ' 9910.00 10158.00 45.2 298.3 N 61 42 W 42.2 289.6 N 70 24 W 8172.57 8: 5]..84 10323.00 44.7 289.9 N 70 06 W 8471.62 10416.00 48.1 290.3 N 69 42 W 8535.74 10513.00 50.9 291.7 N 68 18 W 8598.73 10758.00 53.8 287.8 N 72 12 W 8748.37 10890.00 54.7 285.7 N 74 18 W 8825.49 10934.00 56.1 286.7 N 73 18 W 8850.48 11013.00 60.6 288.1 N 71 54 W 8891.92 11042.00 62.1 286.4 N 73 36 W 8.905.83 11074.00 62.8 285.3 N 74 42 W 8920.63 11105.00 64.5 286.7 N 73 18 W 8934.39 11137.00 66.8 285.3 N 74 42 W 8947.58 11167.00 69.3 285.0 N 75 00 W 8958.79 11201.00 72.1 285.3 N 74 42 W 8970.03 11233.00 74.5 282.9 N 77 06 W 8979.22 11265.00 75.4 282.5 N 77 30 W 8987.53 4246.30 2030.04N 3852.14W 4354.32 N 62.211W 2.436 4415.37 2099.52N 4008.56W 4525.10 N 62.356W 2.707 4528.44 2137.87N 4115.35W 4637.52 N 62.549W 1.520 4595.51 2161.01N 4178.58W 4704.31 N 62.654W 3.669 4668.86 2187.44N 4247.44W 4777.62 N 62.751W 3.088 4862.12 2252.97N 4429.95W 4969.94 N 63.043W 4969.19 2283.84N 4532.53W 5075.41 N 63.258W 5005.40 2293.94N 4567.31W 5111.02 N 63.332W 5072.57 2314.05N ,4631.46W 5177.38 N 63.452W 1.729 1.460 3.691 5.892 5098.00 2321.59N 4655.76W 5202.50 N 63.497W 7.295 5126.36 2329.34N 4683.06W 5230.38 N 63.554W 3.752 5154.14 2337.00N 4709.76W 5257.70 N 63.609W 6.815 5183.28 2345.04N 4737.78W 5286.37 N 63.666W 8.219 5211.11 2352.31N 4764.63W 5313.67 N 63.724W 8.384 5243.19 2360.69N 4795.61W 5345.16 N 63.791W 8.278 5273.84 2368.16N 4825.33W 5375.13 N 63.859W 10.384. · 5304.71 2374.95N 4855.47W 5405.19 N 63.935W 3.061 TELECO ~Fob # MEAS DEPTH INCL DIRECTION AZIMUTH BEARING TRUE VERTICAL VERT DEPTH SECTION 11/29/88 COORDINATES N/S E/W Page 5 CLOSURE DOG LEG DIST ANGLE SEVERITY feet deg deg deg/min feet feet feet feet feet deg deg/100 ' ********** ******* **************************** ********************* ****** ***************************** 11297.00 76.5 282.2 N 77 48 W 8995.30 5335.72 2381.59N 11328.00 77.3 282.5 N 77 30 W' 9002.33 5365.88 2388.05N 4885.80W 5435.35 4915.29W 5464.70 N 64. 013W 3.555 N 64.088W 2.749 11392.00 79.3 281.8 N 78 12 W 9015.30 5428.47 2401.24N 4976.56W 5525.58 N 64.242W 3.303 11423.00 80.2 281.8 N 78 12 W 9020.82 5458.93 2407.49N 5006.41W 5555.20 N 64.318W 2.910 11456.00 81.5 281.5 N 78 30 W 9026.07 5491.45 2414.07N 5038.32W 5586.81 N 64.399W 4.041 11487.00 83.4 281.8 N 78 12 W 9030.14 5522.13 2420.28N 5068.42W 5616.64 N 64.475W 6.204 11551.00 87.6 279.4 N 80 36 W 9035.16 5585.73 2432.01N 11582.00 89.7 279.0 N 81 00 W 9035.89 5616.56 2436.96N 5131.11W 5678.29 5161.71W 5708.07 5230.95W 5775.03 5262.64W 5805.54 5294.30W 5836.12 5324.96W 5865.78 11652.00 92.5 277.6 N 82 24 W 9034.55 5686.06 2447.07N 11684.00 92.5 277.6 N 82 24' W 9033.15 5717.76 2451.31N 11716.00 92.4 278.3 N 81 42 W 9031.78 5749.49 2455.73N 11747.00 92.3 277.9 N 82 06 W 9030.51 5780.24 2460.10N N 64.640W 7.552 N 64.727W 6.896 N 64.930W 4.472 N 65. 024W 0. 175 N 65.116W 2.208 N 65.203W 1.332 12157.00 89.9 279.4 N 80 36 W 9020.31 6187.36 2519.99N 5730.39W 6260.02 N 66.262W 1.119 12062.00 90.7 278.7 N 81 18 W 9020.80 6092.87 2505.05N 5636.58W 6168.17 N 66.038W 0.929. 11936.00 91.8 278.3 N 81 42 W 9023.55 5967.71 2486.43N 5511.99W 6046.85 N 65.720W 0.608 11843.00 92.2 277.9 N 82 06 W 9026.80 5875.44 2473.33N 5419.98W 5957.65 N 65.471W 0-.087 11779.00 92.2 277.9 N 82 06 W 9029.26 5811.98 2464.51N 5356.64W 5896.39 N 65.294W 0.371 TELECO Job # TAK 665 11/29/88 Page 6 MEAS DIRECTION TRUE VERTICAL COORDINATES CLOSURE DOG LEG DEPTH INCL AZIMUTH BEARING VERT DEPTH SECTION N/S E/W DIST ANGLE SEVERITY feet deg deg deg/min feet feet feet feet feet deg deg/100 ' ******** ******************************************************************************************** 12251.00 89.6 279.7 N 80 18 W 9020.72 6280.93 2535.59N 5823.09W 6351.19 N 66.470W 0.451 91.1 281.8 N 78 12 W 9020.14 6374.66 2553.12N 12345.00 12440.00 90.7 282.9 N 77 06 W 9018.65 6469.55 2573.44N 5915.43W 6442.88 6008.22W 6536.15 N 66.655W 2.745 N 66.814W 1.232 12566.00 90.5 282.5 N 77 30 W 9017,33 6595.44 2601.14N 6131.13W 6660.08 N 67.011W 0.355 6224.84W 6754.50 6316.60W 6847.00 12662.00 90.6 282.5 N 77 30 W 9016.41 6691.35 2621.95N 12756.00 90.5 282.5 N 77 30 W 9015'.51 6785.26 2642.34N N 67.159W 0.124 N 67. 300W 0. 126 13385.00 90.4 283.2 N 76 48 W 9010.10 7413.83 2783.74N 6929.46W 7467.71 N 68.113W 1.399 13353.00 90.2 283.6 N 76 24 W 9010.27 7381.85 2776.33N 6898.33W 7436.06 N 68.077W 0.775 13259.00 90.4 282.9 N 77 06 W 9010.76 7287.89 2754.78N 6806.83W 7343.15 N 67.966W 0.819 13166.00 90.7 283.6 N 76 24 W 9011.65 7194.94 2733.47N '6716.31W 7251.26 N 67.854W 0.451 13009.00 90.6 282.9 N 77 06 W 9013.44 7038.02 2697.49N 6563.51W 7096.20 N 67.658W 0.471 12914.00 90.4 282.5 N 77 30 W 9014.27 6943.10 2676.60N 6470.83W 7002.56 N 67.528W 0.075 TELECO 0 i 1F i e I d Serv ices PLAN VIEW WEST (Ft> 9600 8000 8400 4800 3~00 1600 0 18800 20O 8000 4800z 9200 1600 0 1600 TELECO 0 i 1F ieI d S~rv ices VERT I CAL PROJECT I ON 0 2000 4000 8000 sooO I0000 2000 4000 8000 8000 10000 12000 12000 14000 18000 18000 20000 VERTICAL SECTION Standard Alaska Production Company F~ 900 Ea$1 ~enson ~ule P.O. Bo= 196612 Anchorage, Alaska 99519-6612 (907) 564-5 i I ! INOEXED TO: HOUSTON ' ' ARCO CHEVRON E}QiON TEXACO MOBIL PHILLIPS STATE OF ALASKA ARCHIVES STANDARD ALASKA PRODUCTION 'Date: 01/25/89 T~: 79769 REFERENCE: SA~C ~INAL DATA - ?~J~SS~ SI~ DATA The following material Is being submitted herewith. Please acknowledge receipt by slgnlng a copy of this lea-tar and returning It to this offlce: G- 11 Static Gradient 01 / 08 / 89 Camco M- 04 Sta~¢ Grac~ent 01 / 16 / 89 C~c0 N- 15 ~c G~e~ 01 / 16 / 8 9 C~co N- 19 S~¢ G~e~ 01 / 14 / 8 9 C~co R- 13 S~c G~~ 01 / 15 / 8 9 C~co S- 08 S~c G~~ 01 / 15 / 89 C~co W- 01 Flo~g G~e~ 01 / 10 / 89 W- 20 Flo~ng G~e~ 12 / 28 / 88 W- 27 S~~ G~e~ 01 / 1 3 / 89 W- 34 Flo~ng Gra~e~ 12 / 21 / 88 W- 39 S~~ G~e~ 01 / ~ 9 / 89 Y- 24 S~~ G~e~ 01 / 17 / 89 Y-25 ~c G~e~ 12/30/88 C~c0 Z- 20 S~~ G~e~ 12 / 30 / 88 FEB - 2 ]¢8g - ~ ~ Alaska Oil & C-~s Cor, s. Commissior~ Received Date A unit of the or,cj,nat Standard O~i Co,npor~y Founded ,n Cleveland. Oh,o. in 1870 Jennif~ Di~tz I NFORNAT1 ON CONTROL Wel I Records LR2-1 Slanda~d A|a$~o P~O~du¢l~on Company 900 EO%I ~"n%on ~ulevoid P.O ~, 19661? An(ho~o~e. AIo~o ~19-661~ INDEXED TO: REFERENCE: HOUSTON ARCO CIIEVRON EXXON TEXACO MARATHON MOBIL PHILLIPS GEOSCIENCES SAPC TVD LOGS STANDARD ALASKA PRODUCTION Dote: 12-07-88 TI: 79622 The following material Is being submitted herewith. Please acknowledge receipt by signing a copy of this letter and returning It to this office: Y-25 EWR/GR 11-17/24-88 #I thru 9 - Y-25 ='"~ FDC/PORO 11-17/24=88 #1 thru 9 8875-8945 hZ.,' 2"/5" 8875-8945 NL 2"/5" OPEN HOLE Y-25 Y-25 EWR/GR 11-17/24-88 #1 thru 9 10987-13368 NL 2"/5" FDC/PORO" 11-17/24-88 #1 thru 9 10987-13368 NL 2"/5" Received Dote A un;t of fhe o~',g;~ol Stondo,d 0~1 Co.npony Founded ,, Cle,,elond. Oh;o. ,n 18"0 Shirley R. McCurry I NFORMAT I ON CONTRO(_ Wel I Records LR2-1 Standard Alaska ~ P~ocluction Compan~ ~ P.O. ~ 196612 Anchorage. Alaska ~519-~ 12 (~7) 564-511 I HOUSTON ARCO CHEVRON E,~CfON TEXACO To: bIOBIL PHILLIPS STATE OF ALASKA GEOSCIENCES RESERVOIR REFERENCE: ARCHIVES SAPC CASED HOLE FINAL LOGS I NOEXED · :STANDARD ALASKA PRODUCTION Date: 01-13-89 TI: 79732 The following material Is being submit-ted herewith. .Please acknowledge receipt by signing a copy of this letter and returning it to thls office: A-16 INJ Profile #1 12-23-88 10550-11050 Camco W-34 Prod-F #I 12-31-88 10500-10700 Camco 5" W-39 PITS #1 12-31-88 9400-9800 Camco 5" Y-25 GR/CCL #1 12-30-88 10000-11236 Camco 5" Z-20 PROD-F #1 12-27-88 11200-11539 Camco 5" Rece I ved Oa~e , A unit oJ the o~,9~noJ Standard ~i Core.ny Fouled in Clevelo~. ~'o. ,n 1870. Shirley R. McCurry I NFORPLAT I ON CONTROL Wel I Records LR2-1 Standard Alaska . Produ¢lJon Cort~pan~ 900 Eo$I Ben~on Boulevord P.O. Bo~ 196612 Anchoroge. Alosko 99.519.6612 ~907f 564-51 I ARCO EXXON PHILLIPS STATE.: OF AK STANDARD AI_ASF¢~ PRODUCTiON Date: 12/15/88 79631 SYSTEMS (Transmittal & Tape) ARCHII~S SAPC MAGNETI~ LIS TAPES & LISTINGS The following mterial is being submitted t'mrewith. P!e~se acknowledge receipt by. signing a cop}, of this letter and returning, it to this office: Y-25 OH MWD 1.2/06/88 #; ¢2 NL Ba~o~#88-11-27 SOA 10833-13417 Tap6 Pos. #06219 1'600bpi API#5002921883 * EYJ<ON: Ar, Asterisk (*) next to a listing above means you should have received the Tape(s) and Listing(s) directly from the respective service company. Pi. ease confirm this. Date ~ '~C ~ 9 ]988 ~ W~~rds ~2-1 a. co.~M~ka G~s Con=. Commission OR' DUM _ State ot Alaska ~t~LASKA OIL AND GAS CONSERVATION COMMISSION TO: Lonnie C Smith DATE: Commissioner FILE NO: November 10, 1988 D.BDF.141 TELEPHONE NO: THRU: Michael T Minder ¢,~,,,.;F,~ · SUBJECT.' Sr Petroleum Engineer B obb y D F ost er~~'~ Petroleum Inspector FROM: BOP Test SAPC PBU Y- 25 Permit-~ 88-131 Prudhoe. 0tl Pool Wgdnesday, November2, 1988: The test began at 4:30 p.m. and was completed 'at 6.'30 p.m. AS the attached BOP test report shows, there were no failures. In summary, I witnessed the BOP test on SAPC's Y-25. Attachment ~IA (Rev. 8/85) Location. General___i/__~Well Sign General Housekeeping~// Rig Reserve Pit Mud Systems Visual Audio O&G #4 /~ ALASKA OIL & GAS CONSERVATION COMMISSION B.O.P.E. Inspection Report ACC~LATOR SYST~ Full Charge Pressure ~~.. psig,~ Pressure After Closure ~. ,. psig, Pump incr. clos. pres. 200 psiE ~ min~ sec. / Full Charge Pressure Attained: / mind'sec. ,, / / /' Controls: Master ,..~~ _ Remote ~~, Blinds switch cover ~ / . Kelly and Floor Safety ~lyes_ . ' Test Pressure Upper Kelly / Test Pressure 3~O/~~'" ~-- / . Trip Tank Pit Gauge Flow Monitor Gas Detectors BOPE Stack Annular Preventer Pipe Rams Blind Rams Choke Line Valves H.C.R. Valve - ,c:~/~"~a Kill Line Valves -/ Check Valve '~///~ Test Results: Failures ~ Repair or Replacement of failed equipment to be made within Commission office notified. _ Remarks: Choke Manifold c-/~ Test Pressure ~0 O/~,~a:..~. No Valves / No. flanges ~ ~ Adjustable Chokes_ ~. Hydrauically operated choke I Te~t Time · ~ hrs. day~ and Inspector/ Distribution orig. - AO&GCC cc - Operator ce - Supervisor I0 20 . ~0.. ~ 40 I "t0 ~- 20. 3O 40.. l I0~ / (Actua I) I 03 O1 Y-20 (Prope~md) 280'--~ e-- Y- 24 (Proposed) (Act t~l) _ _ 2492' . Y-al pORTION OF T !1 N, R 13 E, UM SCALE i"= I/2. MILE CERTIFICATE OF SURVEYOR p.AD j DETAIL SCALE i": 300' I 1~$-~?-11-13 ) e (14-,~?-11-13 ) · (43-ff~-I!-13 ) . I hereby certify that lam properly registered to practice land surveying in the State of Alaska and that this plat represents a location survey of the welipad shown and tl'a wells thereon. This survey was made by me or under my supervision- and all dimensions and other details are correct. Bottom hoJe locations are furnished by others. Date' -"- Surveyor ~ Prolx)sed BHL Y-22 ~ Proposed BHL Y-ICJ 6 Y-21 I~hle BHL Y-7,8,9,10,12,~ I~ from ~ ~ Pro.eld ~L Y-13 Add Propo~d BHL Y-!0 ~vlsI BHLY- 3,4,a II frOm Pro~ed to Actual ~d ~opo~ed BHL Y-9 Add Pro~d BHL Rewied Pro.see BHL Y-7 Md ~o~Md BHLY-7 A~ Pro~ ~L Y-12 ~ Pr~ ~L Y-II All W ~iel ~ ~' ~b z /~4/aG ~ 2 4/ S/m P~R 3 / 23/el D4~O $/2/81 PJR 2/2/8! PJR l/2~t PJR ;o/9/eO ~ 9/Z~ P~ Revised BHL Y- 1,2,5 86 from Pmlx~ed to Actual. MOTE: Plot doted Aug. ~0,1979 chem~ed tO OCt. 2, 1979. BHL _~l,5 $ 6 chemical. C.J.R. AS- STAKED PAD "Y" Located in NE V4 & NW h/4 PROTRACTED SEC~ $~ a Surveyed for ,SOHIO PETROLEUM CO. Surveyed by F, M, LINDSEY & ASSOC. LAND 8~ HYDROGRAPHIC SURVEYORS 2502 West Northern Lights Boulevard Box 4-081 Anchorage Alaska 04 OI ElgO' 03 $2 o' 03 Y-20 (Proposed) LONG.-- 14844~ 21.96 (Proposed) '3- -~) _ Y-ii R~rIII (Actual) (Actual)_ _ ~ '~Y.5 j °l(Actual) T. iIN.i pORTION OF lq .-_ Til N, RI3E, UM 3 SCALE I"= !/2 MILE ~-24 CERTIFICATE OF SURVEYOR (Proposed) I hereby certify, that I am properly registered to 2500' ~]- ~3.oo ..... J O2 PAD_ DETAIL SCALE 1":300' IF-~ (~$-,~?-11-13) · (14-,??-11-13) · ( 43-~e~I-t 1-13 ) .O____l~' Y-4 (~1-34-11-13) · ¥-5 Proposed BHL Y-22~ practice land surveying in the Stgte of Alaska and that this plat represents a location survey of t~he wellpad shown and tl-~ wells thereon. This survey was made by me or under my supervision-- end all dimensions and other details are correct. Bottom hole locations are furnished by others. - ~,,~* ." 49: $ ~u "'~,il ,, · -, .. C NOTE= Ali botto~ ~oles ere 8800~ sub see. I i II . I II ~ Proposed BHL Y-19 & Y-21 2/20/86~,~- 10/20/81 ~TL' ""'",.d P,opa.d'" 1 Add Proposed BHL Y-I0 Revise BHLY- $,4,& !1 from Propoeed to Act~l 4/ :5/81 PJR Add PrOl~Oeed BHL Y - g 3 / 2~/81 DHO Add Proposed BHL Y-8 5/2/81 PJR Rev,ted Proposed BHL Y-7 2/2 /8I PJR Add Proposed BHLY-? I/28/81 PJR Add Proposed BHL Y-12 10/9/80 PJR Add Proposed BHL Y- II 9/26/80 PJR Ail ~ettom Hoist ore 8800' tub sea. Rtvtted BHL Y- I, ~-,5 8 6 from PropoIed to Actual. 6/25/80LAB NOTE: Plat doted Aug. :50,1979 changed to Oct. 2, 1979. BHL 1,5 ~ 6 changed. C.J.R. II _ IIIII Ii. Bill II A~- ~TAKED PAD "Y" NE 1/48 NWl/4 Located in PROTRACTED SEC. 3_3 & 34, T. IIN.~_.R 13E.,U.M.,AK Surveyed for ,~SOHIO PETROLEUM CO. II I I II I I I I Ill Surveyed by F.M. LINDSEY & ASSOC. LAND & HYDROGRAPHIC SURVEYORS 2502 West Northern Lights Boulevard Box 4-081 Anchorage Alaska I I ]] I[ [] [ I ! II I October 31, 1988 Telecopy, (907)276-75/~2 Ted P~dhoe-lay Unit Drilling Engineering Supervisor -Standard Alaska Production Company P.O. Box 196612 Anchorage, Alaska 99§19-66t2 ~c~dard Alaska Production P~c ~o. 88-131 Sur. Loc. 1402'S~. 168'~L, Sec. 33, TllN, R13E, B~ole Loc. 3730'S~, 1940'~, Sec. 29, T11N, R13E, Dear ~. S~agg, Enclosed is the approved application for permit to drill the above referenced well. The pe~t to drill does not indemnify you from the probable need to obtain additional permits required by law from other $overnmental agencies pti-or to commencing operations at the well site. To aid us in scheduling field work. please notify this office 24 hours prior to coa~en~g installation of the blowout prevention equipment so ~hat a representa~-ive of the Commission may be present to witness testing of the equipmen~ before the surface casing shoe is drilled. Where a diver~er system is required, please also notify this office 24 hours prior co commencing equipment installation so chat the Commission may witness testing before drilling below the shoe of the conductor pipe. ~trman of Alaska Oil and Gas Conservation Commission BY ORD~ 'OF THE COMMISSION dlf EnclOsure Deparcmen~ of Fish & Game, Habi.~.~ection w/o encl. Depar~men~ of Environmental Conservation w/o encl. Standard Alaska ~ Production Company ~ 900 Fast Benson Boulevard P.O. Box 196612 Anchorage, Alaska 99519-6612 (907) 561-.5111 STANDARD ALASKA PRODUCTION October 31, 1988 · Mr. C. V. Chatterton Alaska Oil and Gas Conservation Commission 3301 Porcupine Drive Anchorage, Alaska 99501 Dear C. V. Chatterton: The permit details for Well Y-25 are enclosed, with exception of the wellhead location survey and three copies of the 1": 100' pad maps. These will follow as soon as possible. Verbal approval for spudding Well Y-25 was given by Lonnie Smith in a telephone conversation on Friday, October 28, 1988. If you have any questions, please call me at 564-5173. Tea o. g gg // Prudhoe B~y Drilling Engineering Supervisor TOS/RIS/ta Attachments OCT A unit of the original Standard Oil Company Founded in Cleveland, Ohio, in 1870. i STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION PERMIT TO DRILL 20 AAC 25.005 [la,'Type of work Drill 171 Redrilll-'lllb. Type of well. ExploratoryD Stratig.raphic Testl-i Development Oil [] Re-Entry I-I Deepen 1'-]I Service [] Development Gas [] Single Zone [] Multiple Zone [] 2. Name of Operator 5. Datum Elevation (DF or KB) 10. Field and Pool Standa~r'd.-~4'-l~-s~'a-P-r~'~j~'-~,~'~'nv KBE .~ ao feet Prudhoe Bay Field/Prudhoe 3. Address 6. Property Designation Bay Pool P, O. Box 196612. Anchoraoe. Alaska 99519-6612 ADL 2RPI~I? 4. Location of well at surf-ace 7. Unit or property Name 11. Type Bond(see 2o AAC 25.o2s) 1402' SNI.., 168' WEL, SEC. 33, T11N, R13E Prudhoe Bay Unit At top of productive interval 8. Well number Number 4250' SNL, 0 WEL, SEC. 29, T11N, RI3E Y-25 (44-29-I 1-13) KOO683449-G-14 At total depth 9. Approximate spud date Amount 3730' SNL, 1940' WEL, SEC. 29, T11N, R13E October31, 1988 $200,000.00 12. Distance to nearest 13. Distance to nearest well 4. Number of acres in property 15. Proposed depth(M0an~TVO) preperty line ADL 28297 feet Y-22A 35 feet 2491 13743'MD 9035' TVDfeet 16. To be completed for deviated Wells 2800£t/45.6oleg. 17. Anticipated pressure (see 20 AAC 25.035 {®){2)) Kickoff depth 1{)0~7 feet Maximum hole an~lle .87.5~ Maximum surface 3330 pslg At total depth (TVD) 8800 4390 pslg 18. CaSing program Specifications ' Setting Depth s~ze Top Bottom Quantity of cement :Hole Casing Weight Grade Coupling Length M D TVD M D TVD (include stage data) 80' Surface 110' 110' 8 cu yd$ Concrete 20" Cond. ~ . 17-1/2" 13-3/8" i 68# L-80 BUtt 2650' Surface 2680' 2680' 3723 cuft Permafrost 12-1/4" 9-5/8" 47# NTSOS NSCC 11060' Surface 11090' 8859' 2421 cuft Class G 8-1/2" 5-1/2" 17# L-80 Butt i 2753' 10990. 8787' 13743' 9035' Uncemented Slotted Liner 19. To be completed fOr Redrill, Re-entry, and DeePen Operations. Present welt condition summary Total depth: measured .......... feet .... Plugs-(measured) true vertical feet Effective depth: measured feet Junk (measured) true vertical feet Casing Length Size Cemented Measured depth True Vertical depth Structural ConductorRECEIVED Surface Intermediate Production OCT ~ ]. ]9~ Liner ~,.: .... ~, Perforation depth: measured -~,~,~,,(~OJJ & ~aS Cons, true vertical ' 20. Attachments 'Filing fee [] Property Plat [] BOP Sketch [] Diverter Sketch [] Drilling program [] Drilling flUid program [] Time vs depth pict [] Refraction analysis [] Seabed reportl-I 20 AAC 25.050 requirements E] 21, I hereby~~ing istrue and correct to the best of my knowledgo Signed Title PBU Drilling Engineering. Supervisor Date ~ /" /'~ Commission Use Only // '/ ' Permit Number 1APl number IApprova. l~d,at..e. ISee cover letter ~'~'-/,v'~/ 150'O2'-~'- ~"'/' ~;~'(~;:'"-~I 1U/31/88 Ifor other requirements Conditions of approval samples required [] Yes J~[NO Mud Icg required I-! Yes J~ No Hydrogen sulfide measures [] Yes 'I~No Directional survey required ~ Yes I-1 No ~equired work~~~ 0M; !-115M'? Other: by order of Approved by {~ ~' .--~"', ( 'N~~ Commissioner ,ne comm,ssion D Form 10-401 Rev.'~"~. -2-1 SE )licate GREAT LAND DIRECTIONAL DRILLING, INC. 1111 E. 8Oth Anchorage, Alaska 99502 349-4511 11-03-88 Richard Smith Standard Alaska Production Company Richard: We have examined ~he .potential intersections of well Y-25 with the other ¥~-~wells, The profiles for Y-25 and Y-14 were provided by you and the other wells were calculated from gyro data provided by Standard. All of the close approach situations occur prior to or at the.KOP .~f Y-25 at 2800 ft BKB. The closest 'is ¥-~2 which is 37' feet away at the surface, has a near point of only 10 feet at 836 TVD, and remains within 60 feet to 1089 TVD BKB. The near points are summarized here: Well Distance At TVD BKB Y-2Z 10 ft 836 Y-10 31 ft 1100 Y-09 67 ft 2600 ¥-21 70 ft 1200 There are two crossings of Y-25 with other Y-pad wells, both exceeding 200 feet in separati~. The crossings are summarized below: Well TVD BKB Y-25 TVD BKB Y-25 is Y-2~ 1035 3300 2~65 ft below Y-19 4439 4662 223 ft below TVD's have been adjusted to the Kelly bushing of Y-25. Analysis by: ~~~ Checked by: ~). ~~'~"~'~--~'~ M.M. Monroe D. ThompsOn AFE No. PROPOSED DRILLING AND COMPLETION PROGRAM WELL Y-25 [44-29-11-13] 'PBU HIGH ANGLE WELL [Y-22A BOTTOM HOLE LOCATION] Install.:and cement 80' of 20" conductor to surface. The drilling fluid program will consist of an 8.5 - 9.5 ppg spud mud in the 17-12" hole, a 9.0 - 9.7 ppg water base mud in the 12-1/4" hole and a 8.9 ppg oil base mud in the 8-1/2" hole. Drill 17-1/2" hole to 2680' and cement 13-3/8" casing to surface. Install blowout prevention equipment consisting-of 5000 psi W.P. pipe rams, blind rams and annular preventer. Maximum possible bottomhole lxessure is 4390 psi at 8800' TVDss based on original reservior pressure. Maximum possible surface pressure is 3330 psi based on a gas column to surface from 8600' TVD ss and an oil column to 8800' TVD ss. Directionally drill 12-I/4" hole to the 9-5/8" casing point just above the Sadlerochit Sandstone. Run 9-5/8" 47# ~-S NSCC casing to within 5' of 12-1/4" TD and cement in two stages: First stage using Class G cement around the 9-5/8" shoe. The second stage m Joe downsqueezed in -~e 13- 3/8" x 9-5/8" annulus followed by non .freezing fluid. Directionally drill 8-1/2" hole to TD. Run 5-1/2" slotted liner with retrievable SBR and liner hanger/packer from TD to 100' inside the 9,5/8" shoe. Change over to 9,6 ppg NaC1 completion fluid. Test packer and casing to 3000 psi. Run 5-1/2" tubing, with packer and sliding sleeve. Packer to be set at a 50 degree hole angle. A subsurface safety valve with dual control lines will be placed I00' below the base of permafrost. Install and test Xmas t.ree. Freeze protect the tubing and annulus. Set and test the packer. Tubing size: TailPipe Size: 5 1/2" 17# L-80 A/B Mod Butt Tubing with 4 GLM's 5-I/2"5-1/2" 17# L-80 A/B Mod Butt Tbg Slotted L~.~C EiVED RIS:28-OCT-88 0C]'3 1 1 88 20" Conductor Ball Valve PROPOSED DOWNHOLE DIAGRAM. ~:LL Y-25 [44-29-11 131PBU PROPOSED DEPTH BKB 110 211'0 13-3/8" Casing Shoe 17- I/2" Open Hole 2680 2700 5-1/2" t7# L-80 A/B Mod Butt Tubing Packer 10243 Liner Hanger/Packer 1099O 9-5/8" Shoe · 12-1/4" Open Hole 11090 11095 5-1/2" 17# L-80 A/B Mod Butt Tubing Slotted Liner 5-1/2" Liner Shoe 8-1/2" Open Hole 13743 ......... ? 13743 I I I I I I I I ! I I I I I I I ! I I I I I ! I I I I I I I I I B.O.P. STACK CONFIGURATION 13-S/8 IN. TRIPLE RAM STACK SO00 PSI WP DRILLING ANNULAR PREVENTER Z IN. KILL LINE ~ ' GATE GATE PIPE RA~IS ! I I ! t BLIND RArlS ! .I DRILLING SPOOL 4 IN. CHOKE LINE i GATE GATE I ! PIPE RAMS 1 HuD T'AN~ WATER T'/~I P TANK 75' Choke Manifold Poor Boy Degasser . Brandt VacuumvType Degasser Brandt Dual Tandem Shale Shaker Pioneer Mud Cleaners Pioneer MKI Centrifuge TO TY.~ · 1 - RecOrding drilling fluid, pit 'level indicator with both visual and audio warning de~ices at driller's console 1 - Trip Tank (75 BBL.) 1 - Drilling fluid flow sensor with readout at driller's console 11 - 5 Hp Agitators CHECK LIST FOR NEW WELL PERMITS Company , ~ ~ ~ ~ Lease & Well No. - ITEM APPROVE 'DATE '~ YES NO (1) Fee ~/~C f~//~)~ 1. Is the permit fee attached ...................................... - .... ~ (2) Loc 2 thru 8) (8) (3) Admin .~/~C ~ (10 mad 13) (14 thru 22) (5) Bo E (23 thru 28) // '(29 thru 31) (6) Add:, Geology: Engineering: LCS 2. Is wei1 to be located in a defined pool ............................. ~ ..... 3 Is well located proper distance from property line . ~__ 5. Is sufficient undedicated acreage available in this .... ~-- 6. Is well to be deviated and is wellbore plat included ................ R~_ 7. Is operator the only affected party .................... ~ ............ ~- 8. Can permit be approved before fifteen-day-wait ...................... ~ Y-z.5- .... REMARKS 10. i1. 12. 13. Does operator have a bond in force .................................. Is a conservation order needed ...................................... Is administrative approval needed ................................... Is the lease number appropriate ..................................... Does the well have a unique name and number ......................... 14. 15. 16. 17. 18. 19. 20. 21. 22. Is conductor string provided ........................................ Will surface casing protect all zones reasonably expected =o serve as an underground source of drinking water ..................... Is enough cement used to circulate on conductor and surface ......... Will cement tie in surface and intermediate or production.strings ... Will cement cover all known productive horizons ..................... Will all casing give'adequate safety in collapse, tension and burst.. Is this well to be kicked off from an existing wellbore ............. Is old wellbore abandonment.procedure included on 10-403 ............ Is adequate wellbore separation proposed ............................ 23. 24. 25. 26. 27. 28. For 29. 30. 31. 32. Is a diverter system required ....................................... Is the drilling fluid program schematic and list of equipment adequate~ Are necessary diagrams and descriptions of ~-m~BOPE attached. ~ Does BOPE have sufficient pressure rating - Test to ~OOO psig .. ,,~ Does the choke manifold comply w/API RP-53 (May 84) .................. Is the presence of H2S gas probable ................................. exploratory and Stratigraphic wells: Are data presented on potential overpressure zones? ................. Are seismic analysis data presented on shallow gas zones ............ If an offshore loc., are survey results of seabed conditions presented rev: 08/11/88 6.011 Additional requirements ......................................... on R~r : ~IT~ GEO. ~IT ON/OFF POOL ~S STA~S ~ NO. SHO~ ~m~,'/ d~;/) ~,' '~,~ o ~.,]. ~,-~o 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. F:. C F' ?. ETA P N:'-'! RECEIVED DEC 1 9 1988 ~a~ 011 & Gas Cons. Commission ~chorage i:i~ F.:, C F.: L. L.. - E~ 0 (] 0 0 0 F_i 0 0 C?-4 P'.S F,':. L ;._ - E; 0 0 0 i} 0 0 0 0 {) 0 ~3 {.] '.:-'.. Ci 4 C', 'L'! Ci L 0 4. Fi ',] ?: 'L 744.. 54 ~9 ~ 81 i % 3 ~ 50 233 ~ ~S ~1 33:3 ~ S 0 292 ~ 8 ~. 31 ~ S :3 5:3:3,58 7'F $, 72 8:32 = 57 ?8,24 39,71 0 33 ~ 50 7:?, 90 ! :3:3 ~ 50 ¥ :'5.52 iL 9 ~ 91 :i::33 S ~ 50 79i ,54 '~ 7 ~ 24 28 ~. 07 44 ~ 92 ,":: S 9,4:3 '77,4 ,, 57 7" 92 ~. n 4 25,8! :1;5 6" 88 7,45 772,56 21 3266, :33 32.18, .,'i:9 19,48 3 E! 28 . 14 i s ,, 74 3126, O i 2:7 ,, 26 P ! i ! , 65 28,2 i 3264.43 31 78.41 25, S4 25,4R 3! 16,36 l 9,0 5 3270 ~ 17 20 ~ Z 8 :31 i 2,65 33:0 3,2. 7 17 ,, 44 3:2 6:5 ,. 88 ! 7 ,. 30 999 ** 25 31 96.66 18 .; 27 16,9'9 27,66 31 27 = 8 320 3, '!-:P. :3284 ~. '9:3 9'160., 8 8 :?,:30 7.64 28 ,~ 6:3 31 70 , 20 28.20 · ::; -~ k:- b: H %, 30 91., 'al. :73271; 26 2 S = '? ":' '? 91 S' 213 ili. 6 3231 25 = i 8: ! 9 C 'X 'T 15,98 2.-i 6 16, :5.: 4 2.2:8 l :i!i, '3 2 2 = 44 2.24 15,19 2; 27 18,5 5.92 -"} "2 "l, "7 24.44 :':. :!:3 ,, :!::,2 2 '! . 1:5 2:3., ' :' LIS VERIFICATION LISTING FOR: STANDARD ALASKA WELL Y-25 PRUDHOE BAY ** reel header ** service name :DG date :88/12/05 origin :TR23 reel name :TAK665 continuation # :01 previous reel : comments :TELECO OILFIELD SERVICES PROPRIETARY FIELD TAPE ** tape header ** service name :DG date :88/12/05 origin :TR23 tape name :TAK665 continuation # :01 previous tape : comments :RIG NABORS 18E ** file header ** file name :TAK665.001 service name :DG version # : 1.23 date :88/12/05 maximum length :1024 file type :LO previous file : ** information records ** table type :TOOL MNEM STAT LENG WEIG HEIG GR ALLO 0.000 0.000 0.000 RSN ALLO 72.000 0.000 0.000 DCDS ALLO 360.000 0.000 0.000 ** information records ** table type :CONS MNEM STAT PUNI TUNI VALU BS UNAL CS I Z UNAL SD UNAL WMUD UNAL SHT UNAL BHT UNAL TD UNAL YEAR UNAL MONT UNAL DAY UNAL ** information records ** IN IN F LB/G DEGF DEGF F IN IN F LB/G DEGF DEGF F 8.500 0.000 10200.000 9.100 0.000 0.000 13430.000 88.O00 12.000 5.000 table type :CONS MNEM STAT PUNI TUNI SON UNAL RI UNAL R2 UNAL R3 UNAL R4 UNAL R5 UNAL R6 UNAL R7 UNAL R8 UNAL HIDE UNAL WN UNAL CN UNAL FN UNAL FL UNAL FL1 UNAL LUL UNAL ENGI UNAL WITN UNAL DFT UNAL LONG UNAL LATI UNAL STAT UNAL COUN UNAL DMF UNAL LMF UNAL PDAT UNAL APIN UNAL VALU mmmmmmm GAMMA/DIRECTIONAL Y-25 STANDARD ALASKA PROD CO. PRUDHOE BAY ANCHORAGE BROCKWAY/ST. PIERRE SCALES ALASKA NORTH SLOPE RKB RKB OS 1 UNAL OS2 UNAL OS 3 UNAL 0 S 4 UNAL 0 S 5 UNAL 0 S 6 UNAL TLAB UNAL TCS UNAL TN1 UNAL TN2 UNAL TN3 UNAL TN4 UNAL TN5 UNAL TN6 UNAL TN7 UNAL TN8 UNAL TN9 UNAL TN 10 UNAL TN 11 UNAL TN 12 UNAL SECT UNAL TOWN UNAL RANG UNAL NATI UNAL CONT UNAL MSS UNAL MFSS UNAL MCSS UNAL SLAB UNAL CLAB UNAL CS 1 UNAL CS 2 UNAL C S 3 UNAL BS 1 UNAL BS 2 UNAL BS 3 UNAL HLD UNAL RUN UNAL LUN UNAL OPER UNAL LCC UNAL BLI UNAL TLI UNAL EPD UNAL APD UNAL F F F F F F F F USA NAM STATE COUNTY 13.375 9.625 12.25 8.50 INCL 0.000 2300.000 0.000 0.000 0.000 0.000 0.000 0.000 EKB UNAL F F 78.710 EDF UNAL F F 77.210 EGL UNAL F F 0.000 TDD UNAL F F 13430. 000 TDL UNAL F F 13430. 000 CW1 UNAL LB/F LB/F 0. 000 BSD1 UNAL F F 0. 000 CBD1 UNAL F F 0 . 000 CBL1 UNAL F F 0.000 CW2 UNAL LB/F LB/F 0. 000 BSD2 UNAL F F 0. 000 CBD2 UNAL F F 0.000 CBL2 UNAL F F 0.000 CW3 UNAL LB/F LB/F 0. 000 BSD3 UNAL F F 0. 000 CBD3 UNAL F F 0. 000 CBL3 UNAL F F 0.000 STEM UNAL DEGF DEGF 0.000 MRT UNAL DEGF DEGF 0.000 DFD UNAL LB/G LB/G 0. 000 DFV UNAL S S 0.000 DFPH UNAL 0.000 DFL UNAL C3 C3 0.000 RMFS UNAL OHMM OHMM 0.000 RMS UNAL OHMM OHMM 0.000 RMCS UNAL OHMM OHMM 0.000 MST UNAL DEGF DEGF 0.000 MFST UNAL DEGF DEGF 0.000 MCST UNAL DEGF DEGF 0.000 ** information records ** table type MNEM : PRES OUTP STAT TRAC CODI DEST MODE GR GR ALLO Ti MSPO ROP ROP ALLO T2 MLIN SWOB SWPB ALLO T3 MDAS DRHO DRHO DISA T3 LSPO PHIN PHIN DISA T23 LDAS PEF PEF DISA T23 HGAP BS BS DISA T1 LSPO TENS TENS DISA T2 LSPO 1 1 1 1 1 1 1 1 NB NB NB NB SHIF SHIF NB NB FFLS FFLS DISA Ti LLIN 2 NB FFSS FFSS DISA Ti HGAP 2 NB FLS FLS DISA T1 LSPO 2 NB FSS FSS DISA T1 HDAS 2 NB LSHV LSHV DISA T23 LLIN 2 SHIF SSHV SSHV DISA T23 LDAS 2 SHIF 14 DUMM DISA T1 LLIN NEIT NB 15 DUMM DISA T1 LLIN NEIT NB 16 DUMM DISA T1 LLIN NEIT NB 17 DUMM DISA T1 LLIN NEIT NB 18 DUMM DISA T1 LLIN NEIT NB 19 DUMM DISA T1 LLIN NEIT NB ** information records ** table type :FILM MNEM GCOD GDEC DEST DSCA 1 EEE 2 EEE PF1 S2 PF2 D500 ** information records ** table type :AREA MNEM STAT BEGI 1 DISA 2 DISA 3 DISA 4 DISA 5 DISA 6 DISA 7 DISA 8 DISA ** data-format record ** entry blocks type 4 8 9 size 1 4 4 Z1 Z1 Z1 Z1 Z1 Z1 Z1 Z1 END PATT DEST Z1 BLAN NEIT Z1 BLAN NEIT Z1 BLAN NEIT Z1 BLAN NEIT Z1 BLAN NEIT Z1 BLAN NEIT Z1 BLAN NEIT Z1 BLAN NEIT repr code 66 68 65 entry 255 60.000 .liN 12 4 68 -9999.000 0 2 79 0 datum specification blocks WARNING the following table is in LIS Datum Specification Block Sub-Type 0 and the API Type Codes may be Unreliable!!! mnem service service id order # DEPT GR ROP SWOB RPM TCDS INC AZM TVD VS NS EW DLS unit api api log type FT 00 000 00 000 00 000 00 000 00 000 00 000 00 000 00 000 00 000 00 000 00 000 00 000 00 000 api api file size spl repr class mod no. code 00 00 0 4 1 68 0 00 00 0 4 1 68 0 00 00 0 4 1 68 0 00 00 0 4 1 68 0 00 00 0 4 1 68 0 00 00 0 4 1 68 0 00 00 0 4 1 68 0 00 00 0 4 1 68 0 00 00 0 4 1 68 0 00 00 0 4 1 68 0 00 00 0 4 1 68 0 00 00 0 4 1 68 0 00 00 0 4 1 68 0 process level depth = 10200.0000 feet GR 1.0000 ROP TCDS 1.0000 INC VS 1.0000 NS depth = 10350.0000 feet GR 109.0000 ROP TCDS 132.8000 INC VS -9999.0000 NS depth = 10500.0000 feet GR 158.2500 ROP TCDS 140.2570 INC VS -9999.0000 NS depth = 10650.0000 feet GR 135.0000 ROP TCDS 122.0000 INC VS -9999.0000 NS 3108.9600 meters 1.0000 SWOB 1.0000 RPM 1.0000 AZM 1.0000 TVD 1.0000 EW 1.0000 DLS 3154.6800 meters 57.0670 SWOB 61.4730 RPM -9999.0000 AZM -9999.0000 TVD -9999.0000 EW -9999.0000 DLS 3200.4000 meters 76.8760 SWOB 44.9080 RPM -9999.0000 AZM -9999.0000 TVD -9999.0000 EW -9999.0000 DLS 3246.1200 meters 35.3760 SWOB 27.2620 RPM -9999.0000 AZM -9999.0000 TVD -9999.0000 EW -9999.0000 DLS 1.0000 1.0000 1.0000 46.0000 -9999.0000 -9999.0000 99.1650 -9999.0000 -9999.0000 0.0000 -9999.0000 -9999.0000 depth = 10800.0000 feet 3291.8400 meters GR 133.0000 ROP 19.2830 SWOB 30.6790 RPM 0.0000 TCDS 125.6000 INC -9999.0000 AZM -9999.0000 TVD -9999.0000 VS -9999.0000 NS -9999.0000 EW -9999.0000 DLS -9999.0000 depth = 10950.0000 feet 3337.5600 meters GR 133.0000 ROP 29.3790 SWOB 65.7740 RPM 70.0000 TCDS 147.2000 INC -9999.0000 AZM -9999.0000 TVD -9999.0000 VS -9999.0000 NS -9999.0000 EW -9999.0000 DLS -9999.0000 depth = 11100.0000 feet 3383.2800 meters GR 244.0000 ROP 25.9000 SWOB 44.0410 RPM 0.0000 TCDS 143.6000 INC -9999.0000 AZM -9999.0000 TVD -9999.0000 VS -9999.0000 NS -9999.0000 EW -9999.0000 DLS -9999.0000 depth = 11250.0000 feet 3429.0000 meters GR 454.0000 ROP 31.5220 SWOB 29.2480 RPM 0.0000 TCDS 110.3000 INC -9999.0000 AZM -9999.0000 TVD -9999.0000 VS -9999.0000 NS -9999.0000 EW -9999.0000 DLS -9999.0000 depth = 11400.0000 feet 3474.7200 meters GR 53.5000 ROP 77.9280 SWOB 65.4950 RPM 70.0000 TCDS 158.3600 INC -9999.0000 AZM -9999.0000 TVD -9999.0000 VS -9999.0000 NS -9999.0000 EW -9999.0000 DLS -9999.0000 depth = 11550.0000 feet 3520.4400 meters GR 63.0000 ROP 76.8160 SWOB 57.0550 RPM 87.0000 TCDS 168.8000 INC -9999.0000 AZM -9999.0000 TVD -9999.0000 VS -9999.0000 NS -9999.0000 EW -9999.0000 DLS -9999.0000 depth = 11700.0000 feet 3566.1600 meters GR 56.0000 ROP 25.6940 SWOB 16.1360 RPM 116.0000 TCDS 172.4000 INC -9999.0000 AZM -9999.0000 TVD -9999.0000 VS -9999.0000 NS -9999.0000 EW -9999.0000 DLS -9999.0000 depth = 11850.0000 feet 3611.8800 meters GR 70.0000 ROP 60.8560 SWOB 24.1200 RPM 127.0000 TCDS 170.1500 INC -9999.0000 AZM -9999.0000 TVD -9999.0000 VS -9999.0000 NS -9999.0000 EW -9999.0000 DLS -9999.0000 depth = 12000.0000 feet 3657.6000 meters GR 60.5000 ROP 65.3930 SWOB 23.4650 RPM 115.0000 TCDS 172.4000 INC -9999.0000 AZM -9999.0000 TVD -9999.0000 VS -9999.0000 NS -9999.0000 EW -9999.0000 DLS -9999.0000 depth = 12150.0000 feet 3703.3200 meters GR 62.2500 ROP 68.6630 SWOB 33.6110 RPM 109.0000 TCDS 175.6400 INC -9999.0000 AZM -9999.0000 TVD -9999.0000 VS -9999.0000 NS -9999.0000 EW -9999.0000 DLS -9999.0000 depth = 12300.0000 feet 3749.0400 meters GR 101.8000 ROP 155.8050 SWOB 72.1340 RPM 97.0000 TCDS 203.2250 INC -9999.0000 AZM -9999.0000 TVD -9999.0000 VS -9999.0000 NS -9999.0000 EW -9999.0000 DLS -9999.0000 depth = 12450.0000 feet 3794.7600 meters GR 70.0000 ROP 49.0150 SWOB 16.7620 RPM 124.0000 TCDS 181.4000 INC -9999.0000 AZM -9999.0000 TVD -9999.0000 VS -9999.0000 NS -9999.0000 EW -9999.0000 DLS -9999.0000 depth = 12600.0000 feet 3840.4800 meters GR 127.0000 ROP 68.5190 SWOB 20.1190 RPM 138.0000 TCDS 187.5200 INC -9999.0000 AZM -9999.0000 TVD -9999.0000 VS -9999.0000 NS -9999.0000 EW -9999.0000 DLS -9999.0000 depth = 12750.0000 feet 3886.2000 meters GR 57.0000 ROP 40.0590 SWOB 20.5540 RPM 135.0000 TCDS 188.6000 INC -9999.0000 AZM -9999.0000 TVD -9999.0000 VS -9999.0000 NS -9999.0000 EW -9999.0000 DLS -9999.0000 depth = 12900.0000 feet 3931.9200 meters GR 62.0000 ROP 38.5410 SWOB 28.4820 RPM 145.0000 TCDS 193.1000 INC -9999.0000 AZM -9999.0000 TVD -9999.0000 VS -9999.0000 NS -9999.0000 EW -9999.0000 DLS -9999.0000 depth = 13050.0000 feet 3977.6400 meters GR 51.5000 ROP 196.8510 SWOB 58.2320 RPM 122.0000 TCDS 193.7750 INC -9999.0000 AZM -9999.0000 TVD -9999.0000 VS -9999.0000 NS -9999.0000 EW -9999.0000 DLS -9999.0000 depth = 13200.0000 feet 4023.3600 meters GR 48.5000 ROP 50.7190 SWOB 25.9790 RPM 31.0000 TCDS 192.8000 INC -9999.0000 AZM -9999.0000 TVD -9999.0000 VS -9999.0000 NS -9999.0000 EW -9999.0000 DLS -9999.0000 depth = 13350.0000 feet 4069.0800 meters GR 162.0000 ROP 84.5440 SWOB 54.5580 RPM 99.0000 TCDS -9999.0000 INC -9999.0000 AZM -9999.0000 TVD -9999.0000 VS -9999.0000 NS -9999.0000 EW -9999.0000 DLS -9999.0000 ** file trailer ** file name :665 .001 service name : DG version # : 1.23 date :88/12/05 maximum length : 1024 file type : LO next file name :