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194-073
STATE OF ALASKA OIL AND GAS CONSERVATION COMMISSION RECEIVED REPORT OF SUNDRY WELL OPERATIONS 1. Operations Performed FEB 19 2020 Abandon ❑ Plug Perforations ❑ Fracture Stimulate ❑ Pull Tubing ❑ Operations sshuutttl�fowwnno—° ❑ Suspend Other ptair Well 0 Alter Casing Plug for Redrill ❑ Perforate New Pool ❑ Re-enter ❑ Othei: ��.J � `j � ❑ 2. Operator Name: BP Exploration (Alaska), Inc 4. Well Class Before Work Development ® Exploratory ❑ 5. Permit to Drill Number: 194-073 3. Address: P.O. Box 196612 Anchorage, AK 99519-6612 Stratigraphic ❑ Service ❑ 6. API Number. 50-029-22481-00-00 7 Property Designation (Lease Number): ADL 028282 8, Well Name and Number: PBU N-25 9. Logs (List logs and submit electronic and printed data per 20AAC25.071): 10. Field/Pools: PRUDHOE BAY, PRUDHOE OIL 11. Present Well Condition Summary: Total Depth. measured 10065 feet Plugs measured None feet true vertical 9225 feet Junk measured 9570 rest Effective Depth: measured 9904 feet Packer measured 9178 feet true vertical 9068 feet Packer true vertical 8370 feet Casing: Length: Size: MD: ND: Buret: Collapse: Structural Conductor 80 20" 31 - 111 31 -111 1490 470 Surface 3258 10-3/4" 31-3289 31 -3069 5210 2480 Intermediate 9394 7-5/8" 29-9423 29-8604 8180 / 6890 5120 / 4790 Production Liner 800 5-1/2" 17# 13Cr80 9263-10063 6451 -9223 7740 6280 Perforation Depth: Measured depth. 9408-9628 feet True vertical depth: 8589-8801 feet Tubing (size, grade, measured and true vertical depth) 4-1/2" 12.6# 13Cr8O 27-9265 27-8453 Packers and SSSV (type, measured and 4-1/2' Baker SABL-3 Packer 9178 8370 true vertical depth) No SSSV Installed 12. Stimulation or cement squeeze summary: Intervals treated (measured): Treatment descriptions including volumes used and final pressure: 13. Representative Daily Average Production or Injection Data Oil -Bbl Gas-Mc7 Water -Bbl Casing Pressure Tubing Pressure Prior to well operation: 277 4160 3888 1710 249 Subsequent to operation: 140 2800 1592 1870 467 14.Attachments: fregwre4 per 20 MC 25.070.25071, s 25.285) 15. Well Class after work: Daily Report of Well Operations R1 Exploratory ❑ Development m Service ❑ Stratigrephic ❑ Copies of Logs and Surveys Run ❑ 16. Well Status after work: Oil 0 Gas ❑ WDSPL ❑ Printed and Electronic Fracture Stimulation Data ❑ 1 GSTOR ❑ WINJ ❑ WAG ❑ GINJ ❑ SUSP ❑ SPLUG ❑ 17. 1 hereby certify that the foregoing is true and correct to the best of my knowledge. Sundry Number or N/A if C.O. Exempt: WA Authorized Name: Wellman, Julie Contact Name: Wellman, Julie Authorized Title: Production Engineer Contact Email: Julie.Wellmanabp.com Authorized Signature: �— Date: a�� a�aC Contact Phone: +1 9075644657 Form 10.404 Revised 04/2017//��a� ,.,,,,�RZy��z.e� RBpMS �{�✓FEB 2 2010 Submit Onginal Only Daily Report of Well Operations PBU N-25 ACTIVITYnATF ......... _.. 1/24/2020 "*'WELL S/I ON ARRIVAL*'* (HES ELINE PERFORATING) INITIAL T/I/O = 1650/1900/0 PSI. BEGIN RIGGING UP. ***JOB CONTINUED ON 25 -JAN -2020*** ***JOB CONTINUED FROM 24 -JAN -2020**' PERFORATE 9408'- 9428'W/ 2-1/2" HSC W/ STIM TUBES, 6 SPF, 60 DEG PHASE GUN. ALL LOGS CORRELATED TO WESTERN ATLAS LOG DATED 26 -JUN -95, BEGIN STANDING BY FOR WEATHER. 1/25/2020 ***JOB CONTINUED ON 26 -JAN -2020*** TF *""JOB CONTINUED ROM RIGGING DOWN. FINAL T/I/O = 1650/1900/0. 1/26/2020 **"JOB COMPLETE ON 26 -JAN -2020"** TREE= 4"5M CAMERON W9-LHEAD= 13-5/8"5M FMC ACTUATOR= BAKER KB. ELEV = 72.90' BF. ELEV = 48.4' KOP= 1110' Mm Angle = 31-@2910' Datum MD= 9703' Datum TVD= saw SS 110- 3/4" CSG, 45.5#, NT -80 LHE, D = 9.953" 1 Minimum ID = 3.726" @ 9253' 4-1/2" OTIS XN NIPPLE WIN 4-1/2" TBG, 12.6#, 13CR 80, .0152 bpf, D = 3958' NT -95 HS, D = PBTD 5-12" LW 17#, 13CR 80, .0232 bpf, ID=4.892" 10065' N-25 `-J SAFETY NOTES: RWO ON 05124/% -REPLACED Tm COLLAPSE)GLM's. EXTENSIVE MILLING OPERATIONS MAY WAVELET SOME METAL AND RUBBERDEBRIS IN HOLE USECAUTTONWHM WORIONGINLNR " CHROMETBGANDLNR" 2104' 4-1/2' OTIS HXO SSSV W. D= 3.813" GAR FT MAM1PR R ST PERFORATION SUMMARY 17VD DEV REF LOG: BHCA ON 07/07/94 VLV UATCHI ANGLE AT TOP PERF: 18• @ 9408' DATE Note: Refer b Production DB for Nsto4cal erfdata SW SPF INTERVAL rVS DATE 2-12" 6 9408-9428 O 012520 3-3/8" 6 9416-9417 O 082&12 33B" 4 9532-9539 O 0721194 CARCO 6 9540-9560 O 0721194 16 9560-9568 O 0628195 39/8" 6 9560-9570 O 08/13/94 3-318" 6 9580-9600 O 08/13194 33/8' 6 9610-9628 O 08/13194 PBTD 5-12" LW 17#, 13CR 80, .0232 bpf, ID=4.892" 10065' N-25 `-J SAFETY NOTES: RWO ON 05124/% -REPLACED Tm COLLAPSE)GLM's. EXTENSIVE MILLING OPERATIONS MAY WAVELET SOME METAL AND RUBBERDEBRIS IN HOLE USECAUTTONWHM WORIONGINLNR " CHROMETBGANDLNR" 2104' 4-1/2' OTIS HXO SSSV W. D= 3.813" GAR FT MAM1PR R ST NO 17VD DEV TYPE VLV UATCHI PORT DATE 5 3228 3016 30 CAMCO DOME SK 16 03105/09 4 5573 5091 28 CARCO DOM£ BK 16 1024/12 3 7562 8867 23 CAMOO DOME BK 16 1024!12 2 8996 8198 20 CAMCO SO BK 22 1024/12 1 9100 8297 19 CAMCO "DRY BK D 10/16104 n wn wI=Ixar nA G I W FAUN NU 9166'4-1/2" OTIS X NP, D = 3.813" REV BY COMMENTS 07/IF% N78E 9178' 7-5/8-X 4-12" BKR CR S-3 PERM PKR, AMNPJC GLVC/O [)=3-88", w /KBH-22 ANCHOR SEAL ASSY 9242' J44-1—/2- OTIS X NP, 1 = 3.813" 9253' 4-12' OTIS XN NP, D = 3.725" 9285' 4-1/2"WLEG,D=3.958• 9268' aMD TT LOGGED 06/26/95 9271' S-1/2" BAKERTYPE H PW ID= DATE REV BY COMMENTS DATE REV BY COMMENTS 07/IF% N78E ORIGINAL COMPLETION 1024/12 AMNPJC GLVC/O 05124196 DOYONIS RWO 03/06117 SO/JMD CORRECTION TO GLV C/O DATE 03/19/09 DAV/SV GLV C/O 03105/09 0210320 LEC/JMD ADPERFS 012520 0424/12 JMD DRAWNGCORRECTIONS 08/30/12 RWWJMD ADPERF 0828/12 1022/12 RP/PJC TREE CIO Fl - J/i 6gLC(- l -1(L- VUJr 10/- LONG (0520/04) PRUDHOE BAY UNIT WELL: N-25 PERMIT No: 1940730 API No: 50-029-22481-00 T11 N. R13E, 887' FSL 8 4743 BP Exploration (Alaska) • 111 PSC(/'1 1 14 7av Regg, James B (DOA) From: AK, D &C Well Integrity Coordinator [AKDCWeIIIntegrityCoordinator @bp.com] ef 1 (qv, z- Sent: Friday, October 26, 2012 8:11 PM To: AK, D &C Well Integrity Coordinator; Regg, James B (DOA); AK, OPS GC2 OSM; AK, OPS GC2 Field O &M TL; AK, OPS GC2 Wellpad Lead; AK, OPS Well Pad MN; AK, OPS Prod Controllers; Cismoski, Doug A; Daniel, Ryan; AK, D &C Well Services Operations Team Lead; AK, D &C Wireline Operations Team Lead; AK, RES GPB West Wells Opt Engr; Phillips, Patti J; Schwartz, Guy L (DOA) Cc: Walker, Greg (D &C); Clingingsmith, Mike J; AK, D &C DHD Well Integrity Engineer Subject: OPERABLE: Producer N -25 (PTD #1940730) Tubing Integrity Confirmed All, Producer N -25 (PTD #1940730) passed a MIT-T on 10/24/2012 after dummying the gas lift valves; the well also passed a CMIT -TxIA on 10/13/2012. The passing test confirm the presence of two competent barriers in the wellbore. The well is reclassified as Operable. Please call if you have any questions. Thank you, Gerald Murphy BP Alaska - Well Integrity Coordinator SCANNED F f�Ph 0 9 201 3 WIC Office: 907.659.5102 WIC Email: AKDCWeIIIntegrityCoordinator PBP.com From: AK, D &C Well Integrity Coordinator Sent: Wednesday, October 24, 2012 7:30 AM To: AK, D &C Well Integrity Coordinator; 'Regg, James B (DOA)'; AK, OPS GC2 OSM; AK, OPS GC2 Field 0 &M TL; AK, OPS GC2 Wellpad Lead; AK, OPS Well Pad MN; AK, OPS Prod Controllers; Cismoski, Doug A; Daniel, Ryan; AK, D &C Well Services Operations Team Lead; AK, D &C Wireline Operations Team Lead; RES GPB West Wells Opt Engr; Phillips, Patti J; 'Schwartz, Guy (DOA)' Cc: Walker, Greg (D &C); Clingingsmith, Mike J; AK, D &C DHD Well In ergrity Engineer Subject: CORRECTION: NOT OPERABLE: Producer N -25 (PTD #190730) Failed MIT -T Pre Tree Change Out (Not N -13) All, The well reported was not N -13 (as reported) , but -25 (PTD #1940730). The PTD number for N -25 was correctly stated in the initial e-mail. Please call if you have any questions. Thank you, Gerald Murphy 1 Pitl 0 4 073 Regg, James B (DOA) From: AK, D &C Well Integrity Coordinator [ AKDCWeIIIntegrityCoordinator @bp.com] � � Iz4 {iv Sent: Wednesday, October 24, 2012 7:30 AM To: AK, D &C Well Integrity Coordinator; Regg, James B (DOA); AK, OPS GC2 OSM; AK, OPS GC2 Field O &M TL; AK, OPS GC2 Wellpad Lead; AK, OPS Well Pad MN; AK, OPS Prod Controllers; Cismoski, Doug A; Daniel, Ryan; AK, D &C Well Services Operations Team Lead; AK, D &C Wireline Operations Team Lead; AK, RES GPB West Wells Opt Engr; Phillips, Patti J; Schwartz, Guy L (DOA) Cc: Walker, Greg (D &C); Clingingsmith, Mike J; AK, D &C DHD Well Integrity Engineer Subject: CORRECTION: NOT OPERABLE: Producer N -25 (PTD #1940730) Failed MIT -T Pre Tree Change Out (Not N -13 9 ( N-13) Attachments: N-25.pdf AI I, The well reported was not N -13 (as reported) , but N -25 (PTD #1940730). The PTD number for N -25 was correctly stated in the initial e-mail. . Please call if you have any questions. Thank you, Gerald Murphy V5k 9 BP Alaska - Well Integrity Coordinator N15 WIC Office: 907.659.5102 WIC Email: AKDCWeIIIntegrityCoordinator PBP.com >' " From: AK, D &C Well Integrity Coordinator Sent: Tuesday, October 23, 2012 6:11 PM To: AK, D &C Well Integrity Coordinator; 'Schwartz, Guy L (DOA)'; 'Regg, James B (DOA)'; AK, OPS GC2 OSM; AK, OPS GC2 Field O &M TL; AK, OPS GC2 Wellpad Lead; AK, OPS Well Pad MN; AK, OPS Prod Controllers; Cismoski, Doug A; Daniel, Ryan; AK, D &C Well Services Operations Team Lead; AK, D &C Wireline Operations Team Lead; AK, RES GPB West Wells Opt Engr; Phillips, Patti J Cc: Walker, Greg (D &C); Clingingsmith, Mike J; AK, D &C DHD Well Integrity Engineer Subject: NOT OPERABLE: Producer N -13 (PTD #1940730) Failed MIT -T Pre Tree Change Out All, Producer (PTD #1940730) was secured with a tubing tail plug and subsequently failed an MIT -T on 10/13/12. After failing the MIT -T, a CMIT -TxIA passed on the same day verifying two competent barriers. The failing MIT -T indicates TxIA Communication. This well is reclassified as Not Operable. Plan Forward: 1. V: Complete Tree Change -Out — Complete 1 2. 'S: Pull'OGLV and set DGLV, psi to 2500 si r 3. SP: LDL if MIT -T Fails 4. WIC: Reclassify to Operable if MIT -T passes 5. SP: Set New GLD, Pull TTP if MIT -T Passes Copy of the wellbore schematic is included for reference. «N 25.pdf» Please call if you have any questions. Thank You, Shane Wills (Alt. Greg Walker) Alaska Drilling & Wells Well Integrity rity En ineer M 907.659.5525 t 907.350.8258 mailto :AKD &CDHDWe1llntegri @bp.com 2 TREE= 4" 5M CAM3RON III silk NOTES: RWO ON 05124195 - •■:• LACED VVELI_HEAU= 13-5/8" 5M FMC THREE COLLAPSED GLM's. IXTENSIVE MILLING ACTUATOR" BAKER KB. ELB/ - 72.90' N —2 5 OPERATIONS MAY HAVE LEFT SOME METAL AND RUBBER DEBRIS IN HOLE USE CAUTION WEIN BF. ELEV = 48.4' WORKING IN LW. ' CHROME TBG AND LNR"'"* KOP = 1110' Max Angle = 31° @ 2910' Datum f4.1) = 9703' Datum 1VD = 8800' SS I 2104' —14-112" OTtS HXO SSSV NP, 0= 3:813" I I to GAS LFT MAM)RELS 10-3/4' CSG, 45.511, NT-80 Ll-E, ID = 9:953" — 3289' ST PA) 1VD DEV 1Y FE VLV LATCH PORT DATE I- 5 3228 3016 30 CAKCO DOME BK 16 03/05/09 — 4 5573 5091 28 CAMCO DOW BK v 16 03/05/09 L 3 7562 6867 23 CAW° DOME BK I ' 16 03/05/09 2 8996 8198 20 CAMCO SO BK ' 22 03/05/09 Minimum ID = 3.725" @ 9253' 1 9100 8297 19 CAPv'CO "MY BK ' 0 03/05/09 4-1/2" OTIS XN NIPPLE STATION #1 = DMY HAS EXTENDED PACKING • I 9166' —4-1t2" OTIS X t%# D = 3.813" = l 1 9178' — , 7-5/8" X 4-1/2" BKR CR S-3 PERM PKR, ID = 3.88", w /1<BH-22 A NCI-IOR SEAL ASSY I I I 9242' — 4 OTIS X NP, ID = 3.813" I I 1 9253' — 4-1/2" OTIS XN KIP, D = 3.725" [TOP OF 5-1/2" LNR 7 9263' I— I 4-1QT TBG, 12.64, 13CR 80, .0152 bpf, ID= 3.958" H 8265' \--/ 9265' — 4-112' OLEG, 0= 3.958' - ... 9268' HELMD TT LOGGED 06/26/95 9271' ---' 5-1r2' BAKER TY FE H PKR, 0 = 4.892" 7-5/8" CSG, 29.74, NT-95 HS, ID = 6.875" — 9423' 1.__A ■ PiERFORATION SUMMARY REF LOG: BHCA ON 07/07/94 I ANGLE AT TOP PERE: 18° @ 9416' Note. Refer to Reduction DB for historical perf data SEE SPF INTERVAL Opn/Sqz DATE , 3-3/8" 6 9416 - 9417 0 08/28/12 Ilk 1 9570' — FISH SAN/FIE BALER - 1-1 r2" OD X 18' LONG 3-3/8" 4 9532 - 9539 0 07/21/94 05/20/04) 6 9540 - 9560 0 07/21/94 I ( . 9560 - 9568 0 06/28/95 3-3/8" 6 9560 - 9570 0 08/13/94 I 3-3/8" 6 9580 - 9600 0 08/13/94 3 6 9610 - 9628 0 08/13/94 . . Fs - 9904' I 4 0. v N . ■•• • V L5-1/2" LNR, 17#, 13CR 80, .0232 bpf, ID =4.892" -- 10065' ■ A A A.A At ■ . . , , DATE REV BY COMNENTS DATE REV BY COA4/04TS PRUDHOE BAY UNIT 07/10/94 N18E ORIGINAL COMPLETION 05/31/06 CO/DTM TREE/ PERE CORR (6/13 WE3_L: N-25 05124/95 DOYONI6 RWO 03/19/09 DAV/SV GLV 00 (03/05/09) PEEWIT No. r1940730 08/16103 emorny KB ELEVATION CORRECTION 04/24/12 Jkt) DRAVVII■0 CORRECTIONS AR No: 50-029-22481-00 05/20/04 FM-IIKAK ASH 08/30/12 RWMJIA) ADFERF (08/28/12) SEC 8, T11 N, R13E, ; ;7' FSL 8 4743' FR. 06/30/05 EZUPJC WAN/ER SAFETY NOTE 10/22/12 RP/PJC TREE CIO 02/10/06 COM'PAG WAIVER SFTY NOTE DELETED BP Exploration (Alaska) RECEIVED STATE OF ALASKA SEP 2 5 2012 • ASKA OIL AND GAS CONSERVATION COMMI ON REPORT OF SUNDRY WELL OPERATIONS AOGCC 1. Operations Abandon U Repair Well U Plug Perforations U Perforate U Other Li Performed: Alter Casing ❑ Pull Tubing❑ Stimulate - Frac ❑ Waiver ❑ Time Extension❑ Change Approved Program ❑ Operat. Shutdown0 Stimulate - Other ❑ Re -enter Suspended Well❑ 2. Operator 4. Well Class Before Work: 5. Permit to Drill Number: Name: BP Exploration (Alaska), Inc Development 1511 Exploratory ❑ + 194 -073 -0 3. Address: P.O. Box 196612 Stratigraphic❑ Service ❑ 6. API Number: - Anchorage, AK 99519 -6612 50- 029 - 22481 -00 -00 7. Property Designation (Lease Number): ,, 8. Well Name and Number: ADL0028282 PBU N -25 9. Logs (List logs and submit electronic and printed data per 20AAC25.071): 10. Field /Pool(s): To Be Submitted PRUDHOE BAY, PRUDHOE OIL 11. Present Well Condition Summary: Total Depth measured 10065 feet Plugs measured None feet true vertical 9224.59 feet Junk measured 9570 feet Effective Depth measured 9986 feet Packer measured See Attachment feet true vertical 9147.65 feet true vertical See Attachment feet Casing Length Size MD TVD Burst Collapse Structural None None None None None None Conductor 80 20" 91.5# H-40 30 - 110 30 - 110 1490 470 Surface 3259 10 -3/4" 45.5# NT -80 30 - 3289 30 - 3069.21 4560 1730 Intermediate None None None None None None Production See Attachment See Attachment See Attachment See Attachment See Attachment See Attachment Liner 800 5 -1/2" 17# 13Cr80 9263 - 10063 8451.16 - 9222.64 7740 6280 Perforation depth Measured depth 9416 - 9417 feet 9532 - 9539 feet 9540 - 9560 feet 9560 - 9568 feet 9568 - 9570 feet 9580 - 9600 feet 9610 - 9628 feet True Vertical depth 8596.78 - 8597.74 feet 8708.01 - 8714.75 feet 8715.72 - 8734.99 feet 8734.99 - 8742.7 feet 8742.7 - 8744.63 feet 8754.27 - 8773.56 feet 8783.2 - 8800.58 feet Tubing (size, grade, measured and true vertical depth) 4 -1/2" 12.6# 13Cr80 24 - 9265 24 - 8453.06 Packers and SSSV (type, measured and true vertical depth) See Attachment See Attachment See Attachment Packer None None None SSSV 12. Stimulation or cement squeeze summary: Intervals treated (measured): SCANNED JAN 2 8 201. Treatment descriptions including volumes used and final pressure: 13. Representative Daily Average Production or Injection Data Oil -Bbl Gas -Mcf Water -Bbl Casing Pressure Tubing Pressure Prior to well operation: 225 1121 2372 - Y" ) 328 252 Subsequent to operation: 0 0 0 0 0 14. Attachments: 15. Well Class after work: Copies of Logs and Surveys Run Exploratory❑ Development El . Service ❑ Stratigraphic ❑ Daily Report of Well Operations X 16. Well Status after work: Oil El Gas ❑ WDSPLU GSTOR ❑ WINJ ❑ WAG ❑ GINJ ❑ SUSP ❑ SPLUC❑ 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. Sundry Number or N/A if C.O. Exempt: N/A Contact Garry Catron Prepared by Garry Catron 564 -4424 Printed Name Garry Catron Title PDC PE Signature SaitAA a Phone 564 -4424 Date 9/25/2012 ppe�rr 1 Z_ R8DMS SEP 2 6 2c12 by (67 Form 10 -404 Revised 11/2011 Submit Original Only Packers and SSV's Attachment ADL0028282 SW Name Type MD TVD Depscription N -25 PACKER 9178 8297.61 4 -1/2" Baker SABL -3 Packer N -25 PACKER 9271 8385.86 5 -1/2" Baker Type H Packer • 11111 Casing / Tubing Attachment ADL0028282 Casing Length Size MD TVD Burst Collapse CONDUCTOR 80 20" 91.5# H -40 30 - 110 30 - 110 1490 470 LINER 800 5 -1/2" 17# 13Cr80 9263 - 10063 8451.16 - 9222.64 7740 6280 PRODUCTION 9314 7 -5/8" 29.7# NT -95 27 - 9341 27 - 8525.36 8180 5120 PRODUCTION 95 7 -5/8" 29.7# 13CR80 9341 - 9436 8525.36 - 8615.87 6890 4790 SURFACE 3259 10 -3/4" 45.5# NT -80 30 - 3289 30 - 3069.21 4560 1730 TUBING 9241 4 -1/2" 12.6# 13Cr80 24 - 9265 24 - 8453.06 8430 7500 • • 1 Daily Report of Well Operations ADL0028282 ACTIVITYDATE SUMMARY •1 'I n - - •V :- - prea•pe DRIFTED W/ 3 -3/8" DMY GUN /TEL /SAMPLE BAILER, LOCATED TT © 9244' SLM (24' CORR TO 9268' ELDM) TAGGED BOTTOM © 9606' ELMD 8/26/2012 ** *WELL LEFT SHUT IN PAD OP NOTIFIED ON DEPARTURE * ** * ** WELL SHUT IN ON ARRIVAL * ** (E LINE PERI -) INITIAL T /I /O = 1700/1800/0 PSI RIH W/ HEAD[6x3] /PGGT -D/ 5' 3 -3/8" 3406, POWERJET, HMX, 6 SPF, 60 DEG PHASING. • PENETRATION: 36.5 ". ENTRANCE HOLE: 0.37 ". SWELLING IN FLUID: 3.66 ". OVERAL LENGTH: 20'. WEIGHT: 190 #. MAX OD: 3.66 ". SHOOTING INTERVAL : 9416' - 9417'. CCL TO TOP SHOT : 8.2'. CCL STOP DEPTH: 9407.8'. TIED IN TO WESTERN ATLAS GR /CCL LOG DATED TO 26- JUNE -95. DEPTH CORRECTION: -3'. SHOOT THE INTERVAL 9416'- 9417'. POOH. FINAL T /I /O = 2100/1800/0 PSI ** *JOB COMPLETE. WELL LEFT SHUT IN ON DEPARTURE * ** 8/28/2012 • TREr= 4" 5M CAMERON • NOTES: IZWO ON 05/24/95 - REPLACED WELLHEAD = 13 -5/8" 5M RC THEE COLLAPSED GLM's. DCTBNSIVEMILUNti ACTUATOR= BAKER 0N5 MAY HAVE LEFT SOME AND RUBBER = / _ : _ _ 72.90' N -2 5 OPERATIONS IN HOLE USE CAUTION WHEN BF. B_1/ = 4&4' WORKING IN LNR. ""' CHROME TBG AND LNR" KOP= 1110' j 1 Max Angie = 31° r 2910' Datum MD = 9703' Datum ND = 8800' SS 2104' I--14-1/2" 0715 FOOD SSSV T4 3.813" • GAS LET MANDRELS 10.3/4" CSG, 45.5#, NT SO LHE, D= 9.953" H 3289' ' ST No TVD DEV TYFE VLV LATCH PORT' DATE 5 3228 3016 30 CAMCO DOME BK r 16 03/05/09 4 5573 5091 28 CAMCO DOME BK " 16 03/05/09 L 3 7562 6867 23 CAMCO DOME BK ' 16 03/05/09 2 8996 8198 20 CAMCO SO BK � 22 03/05/09 Minimum ID = 3.725" @ 9253' 1 9100 8297 19 CAMCO 'TAW BK IF 0 03/05/09 STATION #1 = DMY HAS EXTENDED PACKING IG 4 -1/2" OTIS XN NIPPLE I 9166' H4 -1/2" OTIS X NP, D= 1813" I B 9178' H 7- 518" X 4-1/2" BKR Cat S-3 PERM FKR, D= 3.88", w /KBH -22 ANCHOR SEAL ASSY 1 I 8242' H4 -1/2" OTIS X NP, ID= 3.813' 8253' H4 -1/2" OTE XN NP, D = 3.725' I I TOP OF 5-1/2" LNR H 9263' I--- 14 -1/2" TBG, 12.6#, 13CR 80, .0152 bpf, 13= 3.958" H 9265' I ( 9265' H4-1/2" WIG, D = 1958" I I 9268' HELM] TT LOGO 06/26/95 I 9271' 1H5 -1/2" BAKER TYFEHPM, D= 4.892" I 17 -5/8" CSG, 29.7 #, NT-95 HS, D = 6.875" H 9423' I_41 • FERFORATTON SUMINAR' REF LOG: BHCA ON 07/07/94 ANGLE AT TOPPERF: 18° @ 9416' Note: Refer to Production DB for historical pert data I SIZE SPF NTBTI/AL Opn/Sqz DATE /- 3 318" 6 9416 -9417 0 08/28/12 V lik I 9570' I— FISH - SAM'LE BALER - 1 -12" OD X 18" LONG 3-3/8" 4 9532 - 9539 0 07/21/94 ' (05/20) 6 9540 - 9560 0 07/21/94 9560 - 9568 0 0628/95 3.3/8° 6 9560 - 9570 O 08/13/94 I 3-3/8' 6 9580 - 9600 0 08/13/94 3-3/8' 6 9610 - 9628 O 08/13/94 I WED H 9904' I -- * i i i # iiiii . ., 1 5-1/ L, 17#, 13CR 80, .0232 bpf, D = 4.892" H 10065' ..• ∎Av • NR DATE REV BY COMMENTS I DATE REV BY COMMENTS PRUDHOE BAY UNIT 07/10/94 N18E ORIGINAL COMPLETION 05/31/06 CO/DTM TREE/ REF 00f (6/13/04) WELL: N-25 05124195 DOYON16 RNO 03/19109 DAV/SV GLV C/O (03/05/09) R3RMT Pb: 1940730 08/16/03 CNCYTLP KB EL EEVATION CORRECTION 0424/12 JM) DRAWNG CORRECTIONS AR No: 50-029- 22481 -00 05/20/04 131-VKAK ASH 108/30/12 RWMJM) ADPERF (08/28/12) SEC 8, T11N, R13E, 887' FSL & 4743' FB- 06/30/05 EZUPJC WAIVER SAFETY NOTE 02/10/06' C OM AG WANER SFIY NOTE DELETED BP Exploration (Alaska) N-25 (PTD #1940730) Under Evaluw for sustained casing pressure - TXIA.uniCatiOn Regg, James B (DOA) Page 1 of 1 From: Y.ß11 ~11{01 NSU, ADWWelllntegrity Engineer [NSUADWWelllntegrityEngineer@BP.com] Tuesday, September 18, 2007 9:34 AM Regg, James B (DOA); Maunder, Thomas E (DOA); GPB, Area Mgr West (GC2/WRD); GPB, GC2 OTL; NSU, ADWWell Operations Supervisor; Rossberg, R Steven; GPB, GC2 Wellpad Lead; GPB, Wells Opt Eng; GPB, Optimization Engr; Starck, Jennifer L Roschinger, Torin T.; Austin, Paul A; Holt, Ryan P (ASRC); NSU, ADWWI Tech; NSU, ADWWelllntegrity Engineer Subject: N-25 (PTD #1940730) Under Evaluation for sustained casing pressure - TxlA communication Attachments: N-25.pdf Sent: To: Cc: All, Well N-25 (PTD #1940730) has be"en found to have sustained casing pressure on the IA. The wellhead pressures were SSV/2080/60 psi on 09/15/07. A subsequent TIFL failed on 09/17/07. The well has been classified as Under Evaluation and may be produced under a 28-day clock. The plan forward for this well is as follows: 1. D: TIFL - FAILED 2. S: Change out S/O in STA # 2 3. D: Re-TIFL v S~NED SEP 2 12007 A wellbore schematic has been included for reference. «N-25.pdf» Please call with any questions or concerns. Thank you, Andrea Hughes Well Integrity Coordinator Office: (907) 659-5102 Pager: (907) 659-5100 x1154 9/19/2007 TREE = 4" SM CAMERON N-25 ~y NOTES: RWO ON 05/24/95 .. REPLACED WELLHEAD - 13-5/8" 5M FMC THREE COLLAPSED GLM's. EXTENSIVE MILLING A CTUA TOR = BAKER OPERATIONS MAY HAVE LEFT SOME METAL AND KB. ELEV = 72.90' RUBBER DEBRIS IN HOLE. USE CAUTION WHEN BF. ELEV = 48.4' WORKING IN LNR. .... CHROM E TBG AND LNR*""* KOP- 31~ Max Angle = Datum MD = 9703' Datum "NO = 8800' SS . I 2104' 1-14-1/2" OTIS HXO SSSV NIP, 10 = 3.813" I W GAS LIFT MANDRELS 110-3/4" CSG, 45.5#, NT-80 LHE, 10 = 9.953" I 3289' .. ST MD TVD OEV TYÆ VLV LA TCH PORT OATE 5 3228 3016 30 CAMCO DOME BK 16 05/16/97 4 5573 5091 28 CAMCO DOME BK .. 16 OS/16/97 U 3 7562 6867 23 CAMCO DOME BK .. 16 05/16/97 2 8996 8198 20 CAMCO SO BK .. 20 01/19/06 Minimum ID = 3.725" @ 9253' 1 9100 9100 19 CAMCO EXT DMY BK 0 OS/24/04 4-1/2" OTIS XN NIPPLE . 9166' 1-14-1/2' OTIS X NIP, 10=3.813" I . I ~ ~ I 9178' 7-S/8" x 4-1/2" BKR CR SABL-3 PERM PKR, I I"-" 10 = 3.88", W/KBH-22 ANCHOR SEAL ASSY 9242' 1-14-1/2' OTIS X NIP, ID= 3.813" I I 9253' H4-1/2" OTIS XN NIP, 10 = 3.72S" I TOP OF 5-1/2" LNR I 9263' I- 14-112" TBG, 12.6#, 13-CR 80, .01S2 bpf, 10 = 3.958" I 9265' I 9265' H4-1/2" WLEG, 10 = 3.9S8" ~ 9268' H ELMO TT LOGGED 06/26/95 I x -15-1/2" BAKERTYÆH PKR 9271' 1 7-5/8" CSG, 29.7#, NT-95 HS, 10 = 6.875" I 9423' µ ... PERFORA TION SUMMARY [] REF LOG: BHCA ON 07/07/94 ANGLEATTOPPERF: 16@9532' fl Note: Refer to Froduction DB for historical perf data SIZE SPF INTERVAL OpníSqz DATE 3-3/8" 4 9532 - 9S39 0 07/21/94 i 9570' FISH - SAMPLE BAILER - 1-1/2" 00 X 18" LONG I 3-3/8" 6 9540 - 9570 0 08/13/94 (05/20/04 ) 3-3/8" 6 9580 - 9600 0 08/13/94 3-3/8" 6 9610 - 9628 0 08/13/94 I PBTD H 9904' I-- I 5-112" LNR, 17#, 13-CR 80, .0232 bpf, 10 - 4.892" 10065' I DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNrr 07/10/94 ORIGINAL COM PLETJON 07/17105 JAR/TLH GL V C/O WELL: N-25 OS/24/95 RWO 01/19/06 WTSITLH GL V C/O ÆRMrr No: "1940730 08/16/03 CMOITLP KB ELEVATION CORRECTION 02/10/06 COM/PAG WAWER SFTY NOTE DELETED API No: 50-029-22481-00 OS/20/04 RMHlKAK FISH 05/31/06 CO/DTM TREE! ÆRF CORRECTION (6/13/04) SEC8, T11N, R13E, 887' FSL & 4743' FEL OS/24/04 KS/KAK GL V C/O I 06/30/05 EZLlPJC WAWER SAFETY NOTE BP Exploration (Alaska) RE: N-25 Change to Normal Well . eyYl)jÍ.. tQ4-073 Subject: RE: N-25 Change to Normal Wcll From: "NSLJ, ADW Well fntcgrity Engineer" <NSUADWWelHntcgrityEnginccr@BP.com> . Date: Fri, 10 Fcb 2006 05:47:58 -0900 K~N ',?(/~00 To: "1\:SLJ, ADW Well Operations Supervisor" <NSUADWWcllOpcrationsSupcrvisor@BP.com>, "Rossherg. R Steven" <Stevcn.Rosshcrg(f.&ßP.com>, "Kurz, John" ..:::john.kurz@BP.com>, jim....rcgg@admin.state.ak.us, \vinton_..aubcrt@admin.state.ak.us, "GPB, Wells Opt Eng" <GPßWellsOptEng~_YBP.com>, "GPB, Optimization Engr" <GPßOptimizationEngr@BP.com>, "GPB, GC2 Wellpad Lead" <GPBGC2WcllpadLcad@BP.com>, "GPB, GC2 Area Mgr" <GPBGC2TL(à.1BP.com>, GPBWcIlPadsSUN@:BP.com, "Warren, Mikc" <Mike.Warrcn@BP.com> cc: "Austin, Paul A" <PauI.A.Austin@.BP.com>, "NSU, ADW Wcll Integrity Engincer" <NSlJADWWelllntegrityEngincer@BP.com>, "MCCOLLUM, CODY 0 (VECO)" <Cody.McCollum@ßP.com>, "Hughes, Andrea (VECO)" <hugha4@.ßP.com>, "Julian, Jcnnifer Y" <Jcnni fèrJ ulian@BP.com> Hello all. Well N-25 has been reclassîfied as a Normal well. A TIFL passed post OGLV changeout. Lead Operator: would you please ensure any waiver related signage îs removed from the wellhouse. Please call with any questîons. Joe 659-5102 r (,; (. From: Austin, Paul A Sent: Thursday, February 09,20066:41 PM To: NSU, ADW Well Integrity Engineer Subject: N-25 Change to Normal Well Joe, N-25 is currently waivered for TxlA comm. On 01/28/06 it passed a TIFL (post c/o of OGLV in sta 2) proving tubing integrity. I recommend we cancel the waiver on thîs well and change it to Normal status. Thanks, Paul Austin Well Integrity Engineer x5766 1 of 1 2/1 0/2006 9:06 AM N-25 (PTD #1940730) Classified as Problem Well ') Subject: N-25 (PTD #1940730) Classified as Problem Well From: "NSU, ADW Well Integrity Engineer" <NSUADWWellIntegrityEngineer@BP.com> Date: Mon, 04 Oct 200420:29:03 -0800 . . To: "Warren, Mike (Orbis)" <WarrenM@BP.com>, "GPB, Fld TL" <GPBFldTL@BP.com>, "Rossberg,'RSteven" <RossbeRS@BP.com>, "NSU,'ADW Well Operations Supervisor" . <NSUADWWellOperationsSuperVisor@BP.conl>, "GPB, Wells Opt Eng" "." "" <GPBWellsOptEng@BP.com>, "AOGCC Jim Regg (E-mail)..<jim_regg@.admin.state.ak.us>. " "AOGCC Winton Aubert (E-mail)..<winton_aubert@admin.state.ak.us>. "NSU, ADW WL &. Completion Supervisor" <NSUADWWL&CompletionSupervisor@BP.com>,. "GPB,'Well Pads NUP" <GPBWellPadsSUN@BP .com>, "Engel; Harry R" <EngelHR@BP:com> . ". " "" " ". . " CC: "NSU, ADWWell Integrity Engineer'.' <NSUADWWellIntegrityEngineer@BP.com>, "Mielke, " RQbert L." <robert.mielke@BP.com> ." ) Rrq I v{¡.zt ò4- All, Well N-25 (PTD #1940730) has been found to have sustained casing pressure on the IA. The surface pressures were T/I/O = 2220/2220/0 on 8/22/04. Sustained casing pressure could not be immediately confirmed because of the GC-2 shutdown that prevented bleeding gas down the flowline. The well is a gas lifted producer and was brought on line on 9/9/04. By producing the well, the casing pressure reduced to 600 psi. A TIFL failed on 10/02//04 confirming sustained casing pressure. The plan forward for this well is as follows: 1. DHD: TIFL - FAILED 2. SL: GLV c/o 3. DHD: Re-TIFL A wellbore schematic has been included for reference. «N-25.pdf» The well has been classified as a Problem well and may continue to be produced while diagnostic work continues. Please call if you have any questions. Thank you, Anna Dube Well Integrity Coordinator GPB Wells Group Phone: (907) 659-5102 Pager: (907) 659-5100 xl154 Content-Description: N-25.pdf Content-Type: application/octet-stream Content-Encoding: base64 SCANNED NOV {) 220D4 1 of 1 10/12/20047:58 AM .) TREE = 4" 5M CAMERON WB..LHEAD = 13-5/8" 5M FMC ACTUAtOR"';' .... """"""""ï3ïÙ<ER KB-:-ELEV =-.---- 72.90' BF~LEV =-"--""-'-'''''''48.4~ KO"P= 1110' ___,"~_,_,_-,- .~m'____~------~,....~---,.,'; ~~...p\~.~Ie...=.... .....~.~....CW..?~.~..~.: DatumMD= 9703' -...".-..............- . Datum TVD = 8800' SS SAFETY NOTES: RWO ON OS/24/95 - REPLACED THREE COLLAPSED G..M's. EXTENSIVEMILLlNG OPERATIONS MAY HAVE LEFT SOME METAL AND RUBBER DEBRIS IN HOLE. USE CAUTION WHEN WORKING IN LNR. CHROMETBG AND LNR N-25 2104' 1-14-1/2" 011S HXO SSSV NIP, 10 = 3.813" (8 GAS LIFT MANDRELS DEV lYÆ VLV LATCH 30 CAMCO DOME BK 28 CAMCO DOME BK 23 CAMCO DOME BK 20 CAMCO DMY BK 19 CAMCO SO BK ~ ~ ST \¡[) TVD 5 3228 3016 4 5573 5091 3 7562 6867 2 8996 8198 1 9100 9100 110-3/4" CSG, 45.5#, NT-80 LHE, 10 = 9.953" l-i 3289' FORT DATE 16 05/16/97 16 05/16/97 16 05/16/97 0 05/16/97 20 OS/24/04 l Minimum ID = 3.725" @ 9253' 4-1/2" OTIS XN NIPPLE 9166' 1-i4-1/2"011S X NIp, 10=3.813" 1 9178' ~ 7-5/8" X 4-1/2" BKR CR SABL-3 PERM PKR, 10= 3.88", W/KBH-22 ANCHOR SI:AL ASSY I Z z 9242' 1-i4-1 /2" 011S X NIP, 10 = 3.813" 1 9253' 1-14-1/2" 011S XN NIP, 10 = 3.725" 1 ~ ITOP OF 5-1/Z' LNR I~ 9263' ~ l 14-1/2"TBG,12.6#,13-CR80,.0152bpf,ID=3.958" l-i 9265' I r 8 r) I ~ 9265' li4-1/2"WLEG, 10= 3.958" 1 9268' l-f ELMO TT LOGGED 06/26/95 1 9271' 1-i5-1/2" BAKERTYPEH A<R 1 17-5/8" CSG, 29.7#, NT-95 HS, 10 =6.875" l-i 9423' ~ ~ PERFORA 110N SlIv'IlVLA.RY REF LOG: BHCA ON 07/07/94 ANGLEA TTOP PERF: 15 @ 9532' Note: Refer to Production DB for historical perf data SIZE SPF INTERVAL Opn/Sqz DATE 3-3/8" 4 9532 - 9539 0 07/21/94 3-3/8" 6 9540 - 9570 0 08/13/94 3-3/8" 6 9580 - 9600 0 08/13/94 3-3/8" 6 9610- 9628 0 08/13/94 I ".L 9570' - FISH - SAMA..E BAILER- 1-1/2" 00 X 18" LONG (05/20/04) I 1 FBTD 1-1 9904' 1 ' 15-112" LNR, 17#, 13-CR 80, .0232 bpf ,10 = 4.892" H 1 0065' ~ PRlDHOE BAY lJIIrT \NELL: N- 25 PERMIT" No: 1940730 AA No: 50-029-22481-00 SEC8, T11N, R13E, 887' FSL &4743' FEL COMWENTS DA 1£ REV BY \)1\ TE REV BY CO fI.fJI ENTS 07/10194 ORIGINAL COM PLETION OS/24195 RWO 10107iU1 RNITP CORRECTONS 08/16iU3 CM:>/1LP KB ELEVATION CORRECTION OS/20iU4 RIVI-I/KA K FISH OS/24iU4 KSlKAK GLV C/O BP Exploration (Alas ka) THE MATERIAL UNDER THIS COVER HAS BEEN MICROFILMED ON OR BEFORE JANUARY 0'3,200.,1 M PL A T T H E IA L U N D , IS M AR K ER W E R C:LORI~fFILM.DOC ..~eolog'fca'l Mater'i'als Znve,./ )r'y P E F.:'. M I T D A T A T D A T A .... ,r.:;, L U S 94...-. 073 (4~1 ','.-) 0 T 9 ~ 28 ...... 10068 ~ 0t.-t -' D I F t... 94--073 ~.L/,3R L 9h. 28 .... 10009 9t~ ..... 073 ~TVD L. 9~28 .... 10068 IR IJ N D A T' E ....... F~: E ("J V C, 0 '?/" 18/" 94 . 07 / '2 E,/9 07/25/ 9/4.-073 9 ~. ---. 073 9 ~t -'.-' 0 7 3 ~,IFL/GR/'SP L. 9/+28- 't 0068 '1 ~,HC/AC/'GR L 9~28-t00z~0 '1 (~P R OD L. 9392-'9796 '1 L.,~z~281 T 9900-9~+20 Ct.'t/F'DI(-100 1 0 ':¢, .,/25 / 94. 0'?/25/94 08 / 0 Et/' 9 ~ 08/25/9/+ 9/¢ .... 073 9/.~ - 0 '? "3 ~.0 9766 't ~/FZNAL L 8850'-'8993 1 '18/' '1 il/' 9/4. 0 S/' 24/95 9 Z~. "' 07 ..3 9/~ ..- 07 '3 FINAL L 7..370 .....75'29 1 ~/CCL L 9000-9860 I 05 / '1 '2/' 95 07/ 18/95 Ape dr'y d~'tc:h samp'les r'equir'ed"i' yes ~_____._~,~,j'~d r'ecei~'- th~ we'l'i cor'ed"i' yes 'ly~lcscr'i'ption r'ec~i'vect ') Are we'l'i tests r'equ~'r'ei~es ~i~..~' ,~ ~s ' no COMMENTS I] o STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS 1. Operations performed: Operation shutdown Stimulate__ Plugging__ Pull tubing , Alter casing __ Repair well X Perforate Other__ 2. Name of Operator BP Exploration 3. Address P. O. Box 196612, Anchorage, Alaska 99519-6612 4. Location of well at surface 886' NSL, 537' EWL, SEC. 8, T11N, R13E At top of productive interval 3685'NSL, 1744' WEL, SEC. 7, T11N, R13E At effective depth 1570'SNL, 1912' WEL, SEC. 7, T11N, R13E At total depth 3795' NSL, 1817' WEL, SEC. 7, T11N, R13E 5. Type of Well: Development Exploratory Stratigraphic Service 6. Datum elevation (DF or KB) KBE = 69.2 feet 7. Unit or Property name Prudhoe Bay Unit 8. Well number N-25 (33- 7-11-13) 9. Permit number/approval number 94-73 10. APl number 50- 029-22481 11. Field/Pool Prudhoe Bay Field/Oil Pool 12. Present well condition summary Total depth: measured true vertical Effective depth: measured true vertical 10065 9234 9986 9063 Casing Length Size Structural -- Conductor 110' 20" Surface 3216' 10-3/4" Intermediate 9350' 7-5/8" Production -- Liner 800' Perforation depth: measured feet Plugs (measured) feet feet Junk (measured) feet Cemented Measured depth True vertical depth 260 SX Arctic Set 193' 193' 1055 sx CS II, 375 sx 'G' 3289' 3077' 265 sx Class 'G' 9423' 8603' 5-1/2" 145 sx Class 'G' 9532'- 9539', 9540'- 9560' 9263'-10063' 8451'-9223' true vertical subsea 8718'-8724', 8725'-8745' R E ¢ E IV E D Tubing (size, grade, and measured depth) 4-1/2", 12.6#, 13 Cr80, NSCT at 9265' MAR 2 6 1996 Packers and SSSV (type and measured depth) Baker SABL-3 packer at 9178', SVLN at 2104' Alaska 0il & Gas Cons. Commission 13. Stimulation or cement squeeze summary Anchorage Intervals treated (measured) Treatment description including volumes used and final pressure 14. Prior to well operation Subsequent to operation Representative Daily Average Production or Injection Data Oil-Bbl Gas-Mcf Water-Bbl Casing Pressure 1143 6653 694 0 2698 6884 1200 0 Tubing Pressure 217 794 15. Attachments 16. Status of well classification as: Copies of Logs and Surveys run ~ Daily Report of Well Operations X Oil X Gas Suspended 17. I hereby/~rt~y that the~/~nd correct to the best of my knowledge. Signed ~/~/~/~~./~ · ....... Title Service Form 10-~t~4 Rev 06/15/8'"8-- Senior Drillin~l En~lineer SUBMIT IN DUPLICATE BP/AAI SHARED SERVICE DAILY OPERATIONS PAGE: 1 WELL: N-25 BOROUGH: NORTH SLOPE UNIT: PRUDHOE BAY FIELD: PRUDHOE BAY LEASE: API: 50- PERMIT: APPROVAL: ACCEPT: 05/04/95 03:00 SPUD: RELEASE: OPERATION: DRLG RIG: DOYON 16 WO/C RIG: DOYON 16 05/04/95 ( 1) TD: 9986 PB: 9896 05/05/95 (2) TD: 9986 PB: 9896 05/06/95 (3) TD: 9986 PB: 9896 CIRC OUT TBG W/SW MW: 0.0 INSTALL BOOSTER WHEELS, LOWERED DERRICK & MOVE RIG ONTO N-PAD. REMOVE BOOSTER AXLES. LAY HERCULITE & MATS ON N-25. RAISE THE DERRICK. MOVE RIG OVER WELL/LEVEL & SHIM. SPOT CUTTING TANK, SLOP TANK & TIGER TANKS. TAKE ON SEAWATER. PULL BPV W/LUBRICATOR. RU T/CIRC WELL. CIRC DIESEL F/TBG & ANNULUS. CIRC THE WELL. LD COMPLETION STRING MW: 0.0 CIRC OUT DIESEL & COMPLETE CIRC T/CUT OFF. LOSING 120 BPH. SPOT 2 BBLS LCM PILL ON BTMB. TESTED 7-5/8" PACKOFF T/5000. OK. ATTEMPT T/SET 2-WAY CHECK. THREAD WAS BAD. CALLED & HAD BAKER BRING & SET A 4.5" RETR. RETAINER @30' TESTED T/2000PSI. ND TREE & ADAPTER FLANGE. NU BOPE. CHANGE RAMS & INSTALL 4.5" X 7" TOP SHEAR MIDDLE & 3.5" X 6" BTTM. CHANGE WEAR PLATE SEALS. TEST BOPE F/250/5000 RAMS & VALVES T/250/2500 ON ANNULER PREVENTER -- TEST WAIVED BY JERRY HERRING W/AOGCC. MU LND JT IN HANGER. BOLDS. UNSEAT HANGER & CBU. SPOT LCM PILL ON BTTM. RU T/.PULL 4.5" COMPLETION STRING. LD HANGER. RU HES T/ROLL UP CONTROL LINES. LD 4.5" COMPLETION STRING. REVERSE BASKET @7511 MW: 0.0 LD 4.5" 12.6" CR-80 NSCTCOMPLETION STRING. LD 4.5" HXO BALL VALVE NIPPLE. RECOVERED 37 SS BANDS & LEFT 17 IN THE HOLE. RD HES CL SPOOL W/CL. LD 4.5" TBG. RECOVERED 187 JTS & 20' CUTOFF. TWO GLM SSSV. RECOVERED 1 MORE SS BAND. PU KELLY & TEST T/250/5000PSI. PU TEST PLUG. TEST UPPER RAMS T/250/5000PSI. LD TEST TOOLS. SET BORE PROTECTOR. PU REVERSE CIRC, BASKET ASSY. 9) 4-3/4" DC'S & 3.5" DP. CUT DL. PU 3.5" DP T/7511. KELLY UP, BREAK CIRC. REVERSE CIRC & WORK REVERSE CIRC. BASKET @7530. WELL : N-25 OPERATION: RIG : DOYON 16 PAGE: 2 05/07/95 ( 4) TD: 9986 PB: 9896 05/08/95 ( 5) TD: 9986 PB: 9896 05/09/95 ( 6) TD: 9986 PB: 9896 TIH W/OS ASSY. MW: 0.0 TOOH W/REV. BASKET. NO RECOVERY. LD BSKT. PU OVERSHOT ASSY. TIH. PU KELLY. BREAK CIRC, REVERSE CIRC OVER FISH. ENGAGE @ 7511. ATTEMPT T/RELEASE ANCHOR GRAPPLES KEPT RELEASING @ APPROX 4000 FT/PDS. ATTEMPT MECHANICAL BACK OFF GRAPPLES. SLIPPED W/ONLY 5 ROUNDS IN THE PIPE. TOOH W/OS ASSY. BREAK DOWN. REDREWW W/NEW GRAPPLES. CHECKED DC'S ON TRIP OUT. TIH. CHECK WTS. BRK. CIRC. ENGAGE FISH. PERFORM BLIND BACKOFF TOOH. LOST GUIDE, BOWL, BUSHING & BOWL, 3.94'. WOAIT O~ FISHING EQUIP. MU OVERSHOT ASSY. TIH W/OVERSHOT ASSY. MILL OVER THE GLM MW: 0.0 TIH W/OS ASSY. KELLY UP /CHECK WTS. BREAK CIRC. ENGAGE FISH. ATTEMPT T/BLIND BACK OFF. W/17 RDS REVERSE TORQUE IN DS. LOST APPROX 6000'. SCREWED BACK IN. ATTEMPT RELEASING ANCHOR --NO GO. TOOH, CHECK & TIGHTEN ALL CONNECTIONS. LD OVERSHOT ASSY. PU LEFT HAND OVERSHOT ASSY & BACKOFF TOOL. BJ HAD A SWOLLEN BOX. HAD T/WAIT ON DIFFERENT BUMPER JARS. TIH. KELLY UP -BREAK CIRC. CHK WTS. ENGAGE FISH. ACTUATE BACK OF TOOL. PUT 27 R/DS. RIGHT HAND TRQ IN THE PIPE @310 AMPS. ROTATE FREE. TOOH W/BACK OFF TOOL. RECOVERED 18' CUTOFF W/COLLAR & OVERSHOT. LD BACK OFF ASSY. WAIT ON & PU WASHOVER ASSY. TIH W/WASHPIPE ASSY. BREAK CIRC MILLING OVER GLM F/7549 T/7554. TRIP OUT W/SHOE ASSY MW: 0.0 MILL OVER GLM F/7554 T/7555. WASH OVER T/7566. TRIP OUT F/OUTSIDE CUTTER. LUBRICATE RIG. CHANGE O-RINGS IN UPPER RAM DOOR. MU CUTTER ASSY. TRIP IN W/ OUTSIDE CUTTER. KELLY UP BRK. CIRC. CHK WTS. TAG TOP OF FISH @7538 WORK OVER T/7551 & STOPPED. WOULD NOT GO. TRIP OUT T/CHK F/OBSTRUCTION IN CUTTER. RECOVERED 10' PUP & COLLAR. TIH. CUT DL. TIH. MILL OVER GLM F/7557. WASH T/7576. TOOH. WELL : N-25 OPERATION: RIG : DOYON 16 PAGE: 3 05/10/95 ( 7) TD: 9986 PB: 9896 05/11/95 ( 8) TD: 9986 PB: 9896 05/12/95 ( 9) TD: 9986 PB: 9896 05/13/95 (10) TD: 9986 PB: 9896 TRIP OUT & LD TBG MW: 0.0 RECOVERED 10 LBS. JUNK IN BOOT BASKET & TWO LARGE PIECES METAL IN WASHPIPE. PU OUTSIDE CUTTER. TIH. PU KELLY BREAK CIRC. WORK OVER FISH T/7576. ROTATE & PULL BACK GLM. INDICATED CUT @ 7568. TTRIP OUT RECOVERED COLLAR PUP 1.5' CUT. NO GLM. 12.44' TOTAL. TEST BOPE 250/5000PSI RAMS. 250/2500 PSI ANNULUR. RU ATLAS WL. USED LUBRICATOR IN HYDRILL. PU CHEMICAL CUTTER. HELD SFTY MEETING. TIH. CUTTER STOPPED @ 9014' TOP OF GLM #3. PULLED BACK T/8963 & CUT TBG. TRIP OUT & RD ATLAS WL UNIT. MU OVERSHOT ASSY. TIH. BREAK CIRC. CHECK WTS. ENGAGE FISH @7563. CBU. TOOH LD 4.5" TBG. PU STINGER ASSY MW: 0.0 TOOH LD TBG. RECOVERED 35 JTS. & 2) CUT-OFFS. TBG WAS EXTRA TIGHT. RD TBG TONGS. MU OVERSHOT ASSY. TIH. BREAK CIRC. CHECK WTS. REVERSE DOWN T/FISH @ 8977. ATTEMPT T/RELEASE ANCHOR. HAD 27 RDS. IN PIPE & GRAPPLES TURNED LOOSE. TOOH. LD OVERSHOT ASSY. PU MECHANICAL BACKOFF ASSY. TIH. ENGAGE FISH @8977. ATTEMPT T/BACK OFF. OVERSHOT SLIPPING. DROP BALL. RELEASE OVERSHOT. TOOH WET. LD BACKOFF ASSY. PU 3-3/4" MILL & 2) 2-7/8" DC'S. STINGER ASSY. TRIP OUT OF HOLE ~: 0.0 TIH W/STINGER ASSY. BREAK CIRC. CHECK WTS. WORK INTO TOP OF FISH @ 8977. CLEAN OUT 9039 CIRC & WORK PIPE INSIDE FISH. CBU. TOOH. LD STINGER ASSY. EMBPTY BOOT BASKETS. RU ATLAS WL. SFTY MTG ON OPERATION OF CHEMICAL CUTTER. TIH W/CHEMICAL CUTTER ON AL. WT GAUGE INDICATED ENTERING TBG W/CUTTER @ APPROX 30' INTO FISH TOOL. TOOL STUCK, ATTEMPTED T/FREE. FIRED CUTTER. STUCK, ROPE SOCKET TOOL PULLED FREE WHILE ATTEMPTING FREE TOOL. PULLED OUT, RD ATLAS WL. MU MECHANICAL BACKOFF TOOL, TIH. BRK CIRC. CHECK WTS. ENGAGE FISH. PERFORM BACKOFF. LOOKED GOOD. TOOH. MILL OVER FISH MW: 0.0 TOOH. RECOVERED CUT JT. W/THREADS ON END. REC. 30.4'. PU 3.75 MILL & 2 JTS. OF 2-7/8" DC'S F/CLEAN OUT. TIH. BRK CIRC. CHEK WTS. TAG TOP OF FISH @9004. WORK INTO TOP OF FISH, CLEAN T/9067. WORK THRU OBSTRUCTION IN GLM F/2.5 HRS. TOOH F/ATLAS WL CHEMICAL CUTTER RUN. RU AL. RUN #1 DUMMY CHEMICAL CUTTER. COULD NOT GET INTO FISH. RUN #2--PUT CENTRILIZER ON DUMMY CHEMICAL CUTTER. WORKED INSIDE. FISH TOOL HUNG UP IN GLM. PULLED OUT OF ROPE SOCKET. POOH W/WL. RD WL UNIT. PU 2 JTS OF WASH PIPE & BHA. TIH. PU KELLY. BRK CIRC. CHECK WTS. TAG FISH @9004. MILL OVER FISH. WELL ' N-25 OPERATION: RIG ' DOYON 16 PAGE: 4 05/14/95 (11) TD: 9986 PB: 9896 05/15/95 (12) TD: 9986 PB: 9896 05/16/95 (13) TD: 9986 PB: 9896 05/17/95 (14) TD: 9986 PB: 9896 TOOH MW: 0.0 MILL OVER GLM F/9014 T/9020. QUIT MILLING. TOOH T/CHECK MILL. CHANGE SHOE. CLEAN BOOT BASKETS. RECOVERED 20 LBS OF JUNK. TIH. KELLY UP & CHECK WTS. BRK CIRC. MILL OVER GLM & JUNK F/9018 T/9038. TRIP OUT F/OUTSIDE CUTTER WASH OVER FISH MW: 0.0 LD SHOE. PU OUTSIDE CUTTER. EMPTY BOOT BASKETS. RECOVERED 20 LBS OF METAL CUTTINGS. TIH W/OUTSIDE CUTTER. BRK CIRC. CHECK WTS. WORKOVER FISH. COULD NOT GO BELOW 9021. TOOH W/OUTSIDE CUTTER & LD. RECOVERED PIECES OF THE GLM PUP, ATLAS WL TOOLS. PU 1 JT. WASH PIPE & NEW WASHOVER SHOE. TIH. BREAK CIRC. CHECK WT. WASH & MILL OVER FISH F/9022 T/9085. CBU. TOOH. LD MILL. CLEAN BOOT BASKETS. MU CUTTER. TIH W/OUTSIDE CUTTER. CUT DL. TIH, BREAK CIRC & WASH OVER FISH W/CUTTER. TIH W/BACK OFF TOOL MW: 0.0 CUT TBG W/OUTSIDE CUTTER @ APPROX 9070. TOOH. RECOVERED BTTM PIECE ON GLM. 1 PUP, 1 JT OF TBG & 2' CUT JT. LD WASHOVER PIPE. PU 5 JTS. OF 2-7/8" DC'S W/3-3/4" MILL. TIH. TAG TOP OF FISH @ 9071. BREAK CIRC. WASH & MILL THROUGH 4.5" TBG T/OBSTRUCTION @ 9107. NO PROGRESS F/2 HRS. TOOH. LD 2-7/8" DC'S & MILL. MU 4-3/4" DC'S & BACKOFF TOOL. REDRESS BACKOFF TOOL. TIH W/BACKOFF TOOL. TRIP OUT W/MILL MW: 0.0 TIH W/BACK OFF TOOL. KELLY UP. BREAK CIRC. CHECK WTS. ENGAGE FISH @ 9071. PERFORM BACKOFF. SET BACK KELLY. TOOH. RECOVERED CUT OFF JT 34.48' LD BACK OFF TOOL. TEST RAMS & VALVES T/250/5000. ANNULAR ~/250/2500PSI. TEST RIG EMERGENCY SHUT DOWN. TEST WAIVED BY DOUG AMOS W/THE AOGCC. PU ONE JT. WASH PIPE & MILL. TIH. PU KELLY, BREAK CIRC, CHECK WTS. TAG TOP OF FISH @ 9107. MILL F/9117 T/9122. TOOH W/MILL. WELL : N-25 OPERATION: RIG : DOYON 16 PAGE: 5 05/18/95 (15) TD: 9986 PB: 9896 05/19/95 (16) TD: 9986 PB: 9896 05/20/95 (17) TD: 9986 PB: 9896 RIH W/RUNNING SHOE ASSY MW: 0.0 COMPLETED POOH W/MILL ASSY. LD. CLEANED JUNK BSKTS, RECOVERED FINE METAL ONLY. MU OVERSHOT ASSY. RIH T/TOF @9107. WASHED OVER FISH. ENGAGE. PU. MONITOR WELL-STATIC. POOH W/OVERSHOT ASSY. RECOVERED 1) 4.5" PUP & COLLAR. TOTAL RECOVERED = 10.6'1' ALSO RECOVERED 9.74' WL EQUIP. PU BURNING SHOE. MU BHA W 1 JT WASH PIPE. RIH T/TOF (GLM) @ 9122. MILLED ON THE BURNED OVER FISH. MADE NO PROGRESS. FISH APPEARED T/BE TURNING. MONITORED WELL. POOH W/BURNING SHOE ASSY. GLM HUNG UP IN SHOE. LD BURNING SHOE W/FISH LODGED INSIDE. CLEANED BOOT BASKETS. NO RECOVERY. PU REPLACEMENT BURNING SHOE. MU BHA & RIH. RIH W/INSIDE CUTTER MW: 0.0 SLIP & CUT DL. CONT RIH W/BURNING SHOE, WASH PIPE ASSY T/TOF @9123. WASHED OVER, MILLED ON TBG. JUNK WOULD NOT MILL OFF. FISH APPEARED T/BE TURNING W/BURN SHOE. MONITORED WELL-STATIC. POOH T/INSPECT BURNING SHOE. FOUND EVEN WEAR ON ID OF SHOE T/APPROX OD OF 5.5" ID OF SHOE IS 5". LD SHOE. WASH PIPE. RECOVERED FINE METAL W/SOME LARGER PIECES IN LOWER JB. PU 3-7/5" MILL. MU BHA W/3 EA. 3.0625 DC. RIH T/TOP OF JUNK @ 9122. MILLED ON JUNK F/9122 T/9123. MILL ENTERED FISH AFTER 45 MIN OF MILLING. ROTATED, WASHED DOWN F/9123 T/9209. PKR "K" ANCHOR @9200 TALLY MEASUREMENT. PUMP HI VIS PILL. CIRC OUT. MONITORED WELL. STATIC. POOH W/MILLING ASSY. MILLED SHOWED 30% WEAR. LD MILL, DC. PU INSIDE CUTTER. MU BHA. RIH. BURN OVER PKR MW: 0.0 RIH W/MECHANICAL CUTTER T/ TOF @ 9123. WORKED ASSY INTO TOF. T/9171. BROKE CIRC. MADE CUT @ 9171. HAD TRQ, WT INDICATIONS ON SURFACE INDICATING THE CUTTERS ENGAGED THE TBG. MONITORED WELL. STATIC. POOH W/INSIDE CUTTER ASSY. LD CUTTER. PU 2 EA. 3.5" SPEARS W/3.924" GRAPPERS. MU BHA. RIH T/TOF @ 9123. WORKED SPEARS INTO TOF. RIH T/9133. PU FISH. PUMPED HI VIS SWEEP. CIRC OUT. MONITORED WELL. STATIC. POOH W/SPEAR ASSY. RECOVERED ALL TBGS DOWN T/ K ANCHOR WHICH WERE LEFT IN HOLE. TOF WAS 2' SECTION OF LOWER GLM. LD FISH. K ANCHOR WAS BADLY DAMAGED F/TURNING. PU BURNING SHOE. MU BHA. RIH T/TOP OF PACKER @ 9202 DPM. BURN OVER PKR @9202.5' WELL ' N-25 OPERATION: RIG : DOYON 16 PAGE: 6 05/21/95 (18) TD: 9986 PB: 9896 05/22/95 (19) TD: 9986 PB: 9896 05/23/95 (20) TD: 9986 PB: 9896 05/24/95 (21) TD: 9986 PB: 9904 POOH W/BURNING SHOE ASSY MW: 0.0 BURN OVER JUNK PKR F/9205.5 T/9205. NO PROGRESS. NO TRQ EVIDENT. WORJED STRING. NO RESULTS. PUMP HI VIS SWEEP, CIRC OUT. MONITORED WELL. STATIC. POOH T/INSPECT SHOE. 25% WEAR. RECOVERED 10 LBS OF FINE METAL W/2 LARGER PIECES PKR F/JB'S. PU NEW BURNING SHOE. MU BHA & RIH T/9205. BURNED OVER PKR 9205 T/9205.5, RETURN FLOW INCREASE NOTED. GAS T/SURFACE. APPARENTLY CUT THRU PKR ELEMENTS. CIRC OUT GAS THRU CHOKE. MONITORED WELL. STATIC. CONT T/ BURN OVER PKR --LOOSENED--PUSH T/9209. BTTM OF TAILPIPE @ TIP OF 5.5" LINER. TOP PKER @ 9270. PUMPED HI VIS PILL. CIRC OUT. MONITORED WELL-STATIC. POOH W/BURNING SHOE ASSY. RIH W/MILL MW: 0.0 CONT POOH W/BURNING SHOE ASSY. 40% WEAR ON SHOE. RECOVERED 8 LBS OF FINE METAL F/JUNK BASKETS. LD SHOE. PU SHORT CATCH OS W/5.25" GRAPPLE. MU BHA. RIH T/3295. SLIP & CUT DL. RIH T/9209. WORKED OVER. ENGAGE FISH. PU -- FREE FISH. PUMPED HI VIS SWEEP. CIRC OUT. MONITORED THE WELL. STATIC. POOH W/OS ASSY. SLIP & CUT 668' DL. SAFETY CUT. FOUND BROKEN STNDS. POOH SLOWLY W/OS ASSY. PULLED TIGHT INTERMITTENTLY ON TRIP OUT. RECOVERED ALL REMAINING TUBULARS, PKR, TAILPIPE ASSY. BROKE OUT, LD FISH, LD OS ASSY. PU 3.625" MILL, MU BHA W/4.75" CSG. SCRAPER. RIH W/CLN OUT ASSY. TEST CASING MW: 0.0 RIH W/3.625" MILL. 7.625 CASG SCRAPER ASSY T/9597. STRING TOOK WT. CLEANED OUT F/9597 T/9602. CBU. HAD LIQUID CSG PILL W/FINE METAL IN RETURNS. CLEAN OUT SLOWLY F/9602 T/PBTD @ 9904. CBU. SMALL AMT OF SAND ON BU. POOH W/MILL ASSY T/9291. PUMPED HI VIS SWEEP, CIRC OUT T/CLEAN TOL. POOH W/MILL, SCRAPER ASSY. PU 7-5/8" RTTS & TEST PAKR. RIH ON 3.5" DP T/9240. SET PKR @ 9240. TEST CASG T/3500/30 MIN. OK. NO PRESS BLEED OFF. RELEASED PKR. MONITORED WELL. STATIC. POOH LD DP. INSTALL SSSV MW: 0.0 POOH LD ALL DP. LD TEST PKR. RU T/RUN 4.5" 13CR80 COMPLETION STRING. PULLED WEAR BUSHING. RAN 4.5" 13CR80 T/SSSV. INSTALLED SSSV & HU CL. J. HERRING W/AOGCC WAIVED TH NEDD F/BOPE TESTING UNTIL THE RIG IS ON DS 6-7. WELL · N-25 OPERATION: RIG : DOYON 16 PAGE: 7 O5/25/95 TD: 9986 PB: 9904 RIG RELEASED MW: 0.0 HU CL T/SSSV. TEST T/5000. RIH W/4.5" 13CR80 COMPLETION STRING T/TBG HNGR. SPACED OUT SO THE TBG TAILPIPE ASSY WLEG WILL BE INSIDE THE TOP OF THE 5.5" LINER TBS 2'. INSTALLED TBG HNGR. MU LNDG JT. HU CL. TEST T/5000. DISPLACED HOLE T/INHIBITED FILTERED SW WHILE RD TBG RUNNING EQUIP. LANDED HGR/STRING IN TBG SPOOL. LD LNDING JT. SET TWC. TEST T/250. ND BOPE. NU TREE & ADAPTER FLANGE. CL. TEST T/5000. PULLED TWCV. DROPPED BALL/ROD. RU SURFACE LINES. PRESS TBG T/SET 4.5" X 7.625" PKR @ 9177. TEST TBG T/4000PSI F/30 MIN. OK. BLED OFF. SHEARED RP VALVE W/2900 PSI. FRZ PROTECT WELL T/2000 W/DIESEL. SET BPV. TESTT/250. SECURE THE WELL 7 RELEASE THE RIG @ 06:00 HOURS ON 5/25. SIGNATURE: (drilling superintendent) DATE: STATE OF ALASKA ALAor,,A OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS 1. Operations performed: Operation shutdown __ Stimulate X Plugging__ Pull tubing__ Alter casing __ Repair well __ Perforate Other X 2. Name of Operator BP Exploration (Alaska) Inc. 3. Address P. 0. Box 196612, Anchorage, Alaska 99519-6612 4. Location of well at surface 886' NSL, 537' EWL, SEC. 8, T11N, R13E At top of productive interval 3685'NSL, 1744' WEL, SEC. 7, T11N, R13E At effective depth 1570' SNL, 1912' WEL, SEC. 7, T11N, R13E At total depth 3795'NSL, 1817' WEL, SEC. 7, T11N, R13E 5. Type of Well: Development X Exploratory __ Stratigraphic __ Service __ ORIGINAL 6. Datum elevation (DF or KB) KBE=72.9 feet 7. Unit or Property name Prudhoe Bay Unit 8. Well number N-25(33-7-11-13) 9. Permit number/approval number 94-73 / 10. APl number 50- 029-22481 11. Field/Pool Prudhoe Off Pool 12. Present well condition summary Total depth: measured 10065 feet Plugs (measured) true vertical 9234 feet Effective depth: measured 9986 feet Junk (measured) true vertical 9063 feet Casing Length Size Cemented Measured depth Structural -- Con ductor 110' 20" 260 sx Arcticset 193 Surface 3216' 10 3/4" 1055 sx CS 11/375 sx "G" 3289 I n t e r m e diet e 9350' 7 5/8" 265 sx Class "G" 9423 Production -- Lin e r 800' 5 1/2" 145 sx Class "G" 9263-10063 Perforation depth: measured 9532'-9539', 9540'-9560' True vertical depth BKB 193 3077 8603 8451-9223 true vertical subsea 8718'-8724', 8725'-8745' Tubing (size, grade, and measured depth) 4-1/2", 13CR80@9265' Packers and SSSV (type and measured dePth) Packer @ 9202' & SSS V 2128' 13. Stimulation or cement squeeze summary See Attachment Intervals treated (measured) Treatment description including volumes used and final pressure 14. Representative Daily Average Production or Injection Data Oil-Bbl Gas-Mcf Water-Bbl Casing Pressure Tubing Pressure Prior to well operation 709 5078 212 1490 187179 Subsequentto operation 2165 3687 912 0 802 15. Attachments I 16. Status of well classification as: Copies of Logs and Surveys run I Daily Report of Well Operations I Oil __X__ Gas__ Suspended 17. I herebY~ ce,~fy '~at/t'he fo, r~oing,~/ /'. ,J,;~is true and/~'orr[ect to the best of my know edge. Signed />/" (~-r: Title TechnicalAssistantlll Form 10-404 Rev 06/15/88 Service Date ./ SUBMIT IN DUPLICATE WELL N-25(33-7-11-13) Stimulation Operation 1/19/95 A CTU/HCL Packer Stimulation Treatment was performed using the following fluids: SUMMARY: -- Fluid packed the well using 150 bbl's of 100F SW with 0.2% NE-18. WHP = 0 psig. TIH with the Baker IP and Tie_in on tyhe TT. Set packer at 9575'. Pumped 40 bbl of FSW to establish an injection rate. Q = 1.17 BPM at 1700 psig. Pumped 35 bbl's of 15% HCL / 10% Xylene, followed by 20 bbl of FSW and then 8 bbl of Divert #1. Pumped 5 bbl of FSW and started the second stage of acid. When the divertl was at the perfs there was three AP changes up to 130 psig. Pumped the remaining 35 bbl of 15% HCL / 10% Xylene on the 2nd stage. Flushed the CT with 50 bbl of FSW and ISIP = 345 psig. Unset packer and POOH and FP the Ct with 39 bbl of MEOH. OOH and closed the Swab Valve Called PO, PC and Skid 7 and informed them to bring the well back on production. FLUIDS PUMPED BBLS. 150 40 35 20 8 5 35 50 39 100 ° F Filter Seawater with 0.2% NE-18 for Fluid Pack 100 o F Filter Seawater with 0.2% NE-18 for Injection test 15% HCL / 10% Xylene acid Filtered Seawater Divert 1 Filtered Seawater 15% HCL / 10% Xylene acid Filtered Seawater Methanol Water 2/13/95 A Bullhead Wash Treatment was performed using the following fluids: SUMMARY: -- Pumped the job with a modified pump schedule. The scale inhibitor was pumped in 2 stages with a diverter stage between treatment volumes. Good diverting action was seen when the Divert-1 reached the perforations, WHP increased from 1000 psi to 1400 psi with Divert-1 at the perfs. The final scale inhibitor treatment volume was displaced into the perforations with 239 Bbls of seawater overflush. Well was on a vacuum after the treatment. Well is to be left SI for 12 hours before POP. FLUIDS PUMPED BBLS. 642 0.2% NE-18 92 8 150 Filtered seawater pre-flush and overflush w/50 ppm GS-6 and Scale Inhibitor Treatment GS-6 Divert- 1 Filtered seawater displacement Page 2 WELL N-25(33-7-11-13) 7/0 1 /9 5 Performed a Ivishak/Data Fracture using the following fluids: FLUIDS PUMPED DOWNHOLE Establish 2 8 2 3 6 rate with 40# gel 0/0 20 Stage pad 9/0 109 Stage 1 ppg 20/40 CL 0 129 4/0 143 Stage2ppg /0 149 3 ppg. 9/0 158 4ppg 9 167 Pad at perfs 13/0 171 5ppg 16/0 187 6ppg 18/0 205 7ppg 20/0 225 8ppg 22/0 247 9 ppg 14 256 1 ppg on perfs 23/0 270 10ppg 10 290 2 ppg on perfs 1 6 296 3 ppg on perfs 35 305 4 ppg on perfs. 4 8 318 5 ppg on perfs 64 334 6 ppg on perfs 8 2 35 2 7 ppg on perfs 102 37 2 8 ppg on perfs 124 394 9 ppg on perfs 147 417 10 ppg on perfs 13 9 561 Sd pumps. Monitor WHP. Si well. Bleed IAP to 200 FLUIDS PUMPED DOWNHOLE INJ TEST: 315 Bbls DATA FRAC: 407 Bbls FRAC: 561 Bbls 1283TOTAL FLUIDS PUMPED DOWN HOLE LOAD VOLUME FLUID ADDITIVES BJ SPECTRA FRAC G4000 FLUID SYSTEM with 15 PPT silica flour and 40 PPG adomite regain in pad. No ESL. LARRY GRANT Attn. ALASKA OIL + GAS CONSERVATION 3001 PORCUPINE DRIVE ANCHORAGE AK, 99501. Date: 5 July 1995 RE: Transmittal of Data Sent by: PRIORITY MAIL Dear Sir/Madam, Enclosed, please find the data as described below: (41-32-11-14) (21-11-13) (33-7-11-13) # DESCRIPTION 1 PLS FINAL BL+RF ECC No. Run # 1 5132.03 t PLS FINAL BL+RF Run # 1 5661.08 1 PLS FINAL BL+RF Run # 1 5862.06 1 PFC/PERF FINAL BL+RF 1 GR/CCL FINAL BL+RF Run # 1 6016.06 Run # t 6238.08 Run # ! 6356.04 1 PLS FINAL BL+RF Please sign and return to: Attn. Rodney D. Paulson Atlas W~ suite 201 Anchorage, AK 99518 ~j ~FAX to (907) 563-7803 / STATE OF ALASKA /'~"~'--"OIL AND GAS CONSERVATION COMMI"-- REPOR'I' (.,'; SUNDRY WELL OPP_,I,ATIONS 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. O. Box 196612, Anchorage, Alaska 99519-6612 4. Location of well at surface 886' NSL, 537' EWL, SEC. 8, T11N, R13E At top of productive interval 3685'NSL, 1744' WEL, SEC. 7, T11N, R13E At effective depth 1570' SNL, 1912' WEL, SEC. 7, T11N, R13E At total depth 3795'NSL, 1817' WEL, SEC. 7, T11N, R13E 5. Type of Well: Development X Exploratory Stratigraphic Service 6. Datum elevation (DF or KB) KBE=72.9 feet 7. Unit or Property name Prudhoe Bay Unit 8. Well number N-25(33- 7-11-13) 9. Permit number/approval number 94-73 / 10. APl number 50- 029-22481 11. Field/Pool Prudhoe Oil Pool 12. Present well condition summary Total depth: measured true vertical Effective depth: measured true vertical Casing Length Structural -- Conductor 110' Surface 3216' Intermediate 9350' Production -- Liner 800' Perforation depth: measured 10065 feet Plugs (measured) 9234 feet 9986 feet Junk (measured) 9063 feet Size Cemented 20" 260 sx Arcticset '0 3/4" 1055 sx CS 11/375 sx 'G" 7 5/8" 265 sx Class "G" 5 1/2" 145 sx Class "G" 9532'-9539', 9540'-9560' true vertical subsea 8718'-8724', 8725'-8745' Tubing (size, grade, and measured depth) 4-1/2", 13CR80@9265' Packers and SSSV (type and measured depth) Packer@ 9202' & SSSV2128' 13. Stimulation or cement squeeze summary See Attachment Intervals treated (measured) Treatment description including volumes used and final pressure Measured depth 193 3289 9423 9263-10063 True vertical depth BKB 193 3077 8603 8451-9223 RECEIVED tlll""~ I -- v .... Oil & Gas Cons. Commission Anchora~ 14. Prior to well operation Subsequent to operation Representative Daily Average Production or Injection Data Oil-Bbl Gas-Mcr Water-Bbl Casing Pressure 1025 7458 60 0 1034 5049 269 0 Tubing Pressure 179 182 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 for.~jol~ng is_tru~ and correct to the best of my knowledge. Signed ~-~.~/a//~ /-'/' (3/t,,-,z,~ Title Senior TechnicalAssistant II Form 10-40~. Rev06]15/88 ~ Date SUBMIT IN DI~PLI~3ATE WELL N-25(33-7-11-13) Addperf 08/13/94 The following additional interval were perforated using 3 3/8" guns, 6 SPF, random orientation and 60° phasing. 9560 - 9570 MD 9580 - 9600 MD 9610 - 9628 MD AnchoTa.? 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 (44-02-11-13) DESCRIPTION 1 PDK FINAL BL+RF 1 PFC/PERF FINAL BL+RF 1 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 siva and ~.e~urn Petrotechnleal Da~a Cent BP Exploration t.~ .... 900 E~t Benson BOUlevar . . ~aska ~['~ ~as C~s. Commission ~nchora~o LARRY GRANT Attn. ALASKA OIL + GAS CONSERVATION 3001 PORCUPINE DRIVE ANCHORAGE AK, 99501. Date: 4 May 1995 RE: Transmittal of Data Sent by: PRIORITY MAIL Dear Sir/Madam, Enclosed, please find the data as described below: WELL DESCRIPTION 1 PFC/PERF FINAL BL+RF 1 PLS FINAL BL+RF 1 CCL FINAL BL+RF ECC No. Run # 1 5605.03 Run # 1 5992.02 Run # 1 6238.06 Please s~h-~"~turn 'to: Attn. R0dney D. Paulson Atlas Wireline Services 5600 B Street Suite 201 Anchorage, AK 99518 Or FAX to (907) 563-7803 Received by: Date: Please sign and 2eturn to Petrotechnical. Data Center BP Exploration (Alaska) 900 Eas~ Benson Boulevard R~ceived by .... Alaska 0il & Gas Cons. Commission Anchorage LARRY GRANT Attn. ALASKA OIL + GAS CONSERVATION 3001 PORCUPINE DRIVE ANCHORAGE AK, 99501. Date: 11 October 1994 Transmittal of Data Sent by: U.S. MAIL Dear Sir/Madam, Enclosed, please find the data as described below: WELL # DESCRIPTION H-16 ?Q,\ H-17 (34-15-11-13) /~W{ {~-42 (22-35-12-13) //~Y-17A i PLS FINAL BL 1 PLS FINAL RF SEPIA 1 PLS FINAL BLUELINE 1 PLS FINAL RF SEPIA 1 PLS/STP FINAL BL I PLS/STP FNL.RF SEPIA I PL/STP FINAL BL 1 PL/STP FINL.RF SEPIA 1 PL/STP FINAL BL I PL/STP FINL.RF SEPIA I PL/PROFILE FINAL BL 1 PL/PROFILE RF SEPIA 1 PLS FINAL BLUELINE 1 PLS FINAL RF SEPIA 1 PL/STP FINAL BL 1 PL/STP FINL.RF SEPIA 1 PL/PROFILE FINAL BL 1 PL/PROFILE RF SEPIA Run # 1 Run # 1 Run # 1 Run # 1 Run # 1 Run # i Run # 1 Run # 1 Run # 1 Run # 1 Run # 1 Run # 1 Run # 1 Run # 1 Run # 1 Run # 1 Run # 1 Run # 1 ECC No. 926.04 2452.04 2452.03 5608.04 5665.08 5953.06 6047.02 6090.04 6238.05 Atlas w{ ~l { n~' Servic~ 5600 B Street ~ _ Anchorage, A~,_99518~p ~/V~/% Attn. Rodne~P~,..ulson ?~ ~U or STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION WELL COMPLETION OR RECOMP LETION REPORT AND LOG 1. Status of Well Classification of Service Well OIL [] GAS [] SUSPEI',DED [] ABANDONED [] SERVICE [] 2. Name of Operator 7. Permit Number BP Exploration q Ct I r3 3. Address I I/ I ~1 I ~,J I (J U ,. APl Number P. O. Box 196612, Anchorage, Alaska 99519-6612 5o-029-22481 ;4. Location of well at surface D. Unit or Lease Name 886' NSL, 537' EWL, SEC. 8, T11N, R13E '~"~a~ ~ 0. Well Number At Total Depth V~IFI[t~ i ~! 11. Field and Pool 3795' NS1_, 1817' WEL, SEC. 7, T11N, R13E .... Prodhoo Bag Fiold/Prodhoo Bag Pool 5. Elevation in foot {indicate KB, DF, etc.) ~. Lease Designation and Serial No. KBE = 72.9' I ADL 28282 12. Date Spudded 13. Date T.D. Reached 14. Date Comp., Susp. or Aband. 115. Water Depth, if offshore 116. No. of Completions 6/25/94 7/6/94 7/21/94I N/A feet MSLI One 17. Tolal Depth (MD+TVD) 18. Plug Back Depth (MD+TVD) 19. Directional Survey ]20. Depth where SSSV set 121. Thickness of Permafrost 10065' MD/9234' TVD 9986' MD/9063' TVD YES [] NO DI 2128' feet MDI 1900' (Approx.) 22. Type Electric or Other Logs Run GR/DIL/BHCS/CNL/SP/L WD 23. CASING, LINER AND CEMENTING RECORD SE'I'rING DEPTH MD CASING SIZE VVT. PER FT. GRADE TOP BO'I-rOM HOLE SIZE CEMENTING RECORD AMOUNT PULLED 20" 91.5# H-40 30' 110' 30" 260 sx Arcticset (Approx.) 10-3/4" 45.5# NT8OLHE 30' 3289' 13-1/2" 1055 sx CS 11/375 sx "G" 7-5/8" 29. 7# NT95/13CR80 27' 9423' 9-7/8" 265 SX Class "G" 5-1/2" 17# 13CR80 9263' 10063' 6-3/4" 145 sx Class "G" 24. Perforations open to Production (MD+TVD of Top and Bottom and 25. TUBING RECORD interval, size and number) SIZE DEPTH SET(MDt PACKER SET (MDI Gun Diameter 3-3/8" MD TVD 4-1/2", 13CR80 9265' 9202' 9532'-9539' 8718'-8724' 4 spf 9540'-9560' 8725'-8745' 6 spf 26. ACID, FRACTURE, CEMENT SQUEEZE, ETC. DEPTH INTERVAL (MD) AMOUNT & KIND OF MATERIAL USED 27. PRODUCTION TEST Date First Production IMethod of Operation (Flowing, gas lift, etc.) 7/21/94 I Gas Lift Date of Test Hours Tested iPRODUCTION FOR OlL-BBL GAS-MCF ~/ATER-BBL CHOKE SIZE IGAS-OIL RATIO TEST PERIOD Flow Tubing Casing Pressure CALCULATED DIL-BBL GAS-MCF WATER-BBL OIL GRAVITY-APl (corr) Press. 24-HOUR RATE 28. CORE DATA Brief description of lithology, porosity, fractures, apparent dips, and presence et oil, gas or water. Submit core chips. RECEIVED AU(~ 7) 1 1994 ~[~ska Oi[ & Gas Cons. Commission Anchor~ge Form 10-407 Submit in duplicate Rev. 7-1-80 CONTINUED ON REVERSE SIDE 30. GEOL~ MARKERS FORMATION TESTS NAME Include interval tested, pressure data, all fluids recovered and gravity, MEAS. DEPTH TRUE VERT. DEPTH GOR, and time of each phase. Subsea Sag River 9396' 8518' Shublik 9459' 8554' Top Sadlerochit 8525' 8642' RECEIVED AJ~ska 0it & Gas Cons. Corr~mJss/on Anchor;~ 31. LIST OF ATTACHMENTS 32. I hereby certify that the foregoing is true and correct to lhe best of my knowledge ~ Signed ~/~¥- Title DrillingEngineerSuoervisor 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 BP/AAI SHARED SERVICE DAILY OPERATIONb PAGE: 1 WELL: N-25 BOROUGH: NORTH SLOPE UNIT: PRUDHOE BAY FIELD: PRUDHOE BAY LEASE: API: 50- PERMIT: APPROVAL: ACCEPT: 06/24/94 07:00 SPUD: RELEASE: OPERATION: DRLG RIG: NABORS 18E WO/C RIG: NABORS 18E 06/24/94 (1) TD: 0'( 0) 06/25/94 (2) TD: 250' ( 250) 06/26/94 (3) TD: 1658' (1408) 06/27/94 ( 4) TD: 2975' (1317) 06/28/94 (5) TD: 3300'( 325) NU NEW BOPS MW: 0.0 VIS: 0 REMOVE DERRICK AND LOAD ON TRUCK. TRANSPORT MODULES AND DERRICK FROM X PAD TO N PAD. ULTRA SONIC INSPECTION OF DERRICK PARTS. RAISE DERRICK. BEGIN PLANNED CHANGE OUT TO NEW BOPS. EXPECT TO SPUD LATE TODAY. NU NEW BOPS MW: 8.6 VIS:210 NU NEW BOPS. SPOT SUB AND COMPLEXES. RU FLOOR. ACCEPT RIG @1900 HRS ON 06/24/94. NU DIVERTER AND LINES. TAKE ON DRILL WATER. MIX SPUD MUD. FUNCTION TEST DIVERTER. PU AND STRAP BHA. ORIENT AND TEST MWD DIRECTIONAL. DRILL ICE AND PERMAFROST F/ SURF TO 255'. CHANGE STAB BLADES. DRILLING MW: 8.9 VIS:310 DRILL FROM 250-1102'. KICKED OFF @650' SHORT TRIP. PULLED TIGHT THROUGH BUILD F/ 1000-650' CHANGE UNDERGAUGE MOTOR SLEEVE. CHECK BHA ORIENTATION. TRIP BACK TO BTM. REAM F/ 1070-1102'. DRILL FROM 1102-1658'. DRILLING MW: 9.2 VIS:230 CBU BEFORE TRIP. POH FOR BHA. HOLE SMOOTH ON TRIP OUT. PU NEW BIT AND INCREASE MOTOR ANGLE FROM 1 1/2 TO 1 3/4 DEGREE GAUGE BHA AND ORIENT SAME. TRIP IN HOLE SMOOTH. DRILL FROM 1658-2615' SHORT TRIP TO 1494' HOLE TIGHT AT 2151, 2078 AND 1987'. RIH. TAGGED TIGHT S~OT AT 2094' PU KELLY AND REAMED THROUGH. CONT. RIH WITH NO ADDITIONAL TIGHT SPOTS. DRILL FROM 2615-2975'. CEMENTING SURFACE CSG MW: 9.7 VIS:185 DRILL TO 3300'. SHORT TRIP TO HEAVY WALL DP @692' SLM - NO CORRECTION. CBU. MU AND DROP BAKER EMS SURVEY PROBES. POH AND LD BHA. HOLE SMOOTH ALL THE WAY OUT. RU NABORS CASERS. RUN 84 JTS 10 3/4", 45.5# BTC CSG. BECAME TIGHT FROM 2125-3300' WASHED DOWN. CIRC AND RECIP PIPE FOR 3X ANN VOL. RU BJ AND TEST LINES/ STILL DISPLACING AND RECIP PIPE. RECEIVED WELL : N-25 OPERATION: RIG : NABORS 18E PAGE: 2 06/29/94 (6) TD: 3635' ( 335) 06/30/94 (7) TD: 6100' (2465) 07/01/94 ( 8) TD: 7553'(1453) 07/02/94 ( 9) TD: 8870' (1317) 07/03/94 (10) TD: 9436'( 566) DRILLING MW: 9.1 VIS: 37 RU AND PERFORM TOP JOB. ND DIVERTER. MOVE MOUSEHOLE ETC. INSTALL FMC 13 3/8" SPLIT UNI-HEAD. LEVEL RIG. RD CASING TOOLS. CONTINUE TO NU BOPS. TEST CHOKE, KELLY AND RAMS. TEST HYDRILL. PULL TEST PLUG AND INSTALL WEAR RING. MU BIT AND BHA #3. ORIENT AND TEST MOTOR AND MWD. RIH TO TOC. TEST 10 3/4" CSG. OK. DRILL FLOAT COLLAR @3207', CMT, AND SHOE TO 3312'. CBU. PERFORM FIT TEST IN OH. DRILL F/ 3312-3635'. DRILLING MW: 9.4 VIS: 48 DRILL F/ 3635-4319'. SHORT TRIP TO SHOE. NO TIGHT HOLE. INTERMITTENT SWABBING. DRLG 9 7/8" HOLE F/ 4319-5305'. MADE 15 STD SHORT TO 3800' MILD SWABBING F/ 4650-4000' DRLG 9 7/8" HOLE 5305-6100' DRILLING MW: 9.7 VIS: 49 DRLG 9 7/8" HOLE F/ 6100-6313'. DROP SURVEY - SLUG DP. POH, CHANGE BITS, PU BUMPER SUB, ORIENT TOOLS, CHECK MWD. SERVICE WEAR RING. RIH. CUT DRLG LINE. RIH. NO FILL. NO PROBLEMS. DRLG 9 7/8" HOLE F/ 6313-7553'. DRILLING MW: 9.8 VIS: 44 MADE SHORT TRIP TO 8190'. HOLE IN GOOD SHAPE DRLG F/ 7553-8589'. MADE 11 STD SHORT TRIP, HOLE IN ~OOD SHAPE. DRLG F/ 8589-8870' WASH TO BTM MW: 9.8 VIS: 44 DRLG F/ 8870-9436' TOP OF SHUBLIK @9429'. SROP SURVEY, SLUG DP. POH FOR BHA CHANGE. SLM, NO CORRECTION, LD BHA FROM MWD TO BIT. PU ROTARY BHA AND BIT #5, RIH. FILL PIPE @ 5000', TIGHT @9312'. WASH TO BTM F/ 9312-9436'_ NO FILL. TAGGED BTM AND LOST RETURNS. PIPE PICKED Up TIGHT OFF BTM. WORKED PIPE FREE AND ESTABLISHED FULL RETURNS. SPOTTED 50 BBL LCM PILL. POH TO 7900'. LD 18 JTS DP. CIRC AND WORK PIPE PUMPING. NO MUD LOSS. HOLE PACKING OFF AFTER PUMPING 140 BBLS. WORK PIPE AND CIRC TO CLEAN UP HOLE. HOLE TAKES MUD WHEN PARTIALLY PACKED OFF. KINGAK SHALE COMING OVER SHAKER, HOLE NOT CIRC REAL CLEAN. RAN 10 STDS IN HOLE TO 8850'. NO PROBLEMS. START WASHING TO BTM AND CONDITIONING MUD. LOWERING WATER LOSS. RECEIVED ~ IF" .., ~-.,uu ~ '1 199a,~ ~.,t~ska, Oii& Gas Cons. 6ommissio~ A~cho; :j~ WELL : N-25 OPERATION: RIG : NABORS 18E PAGE: 3 07/04/94 (11) TD: 9436' ( 0) 07/05/94 (12) TD: 9436' ( 0) 07/06/94 (13) TD: 9819'( 383) 07/07/94 (14) TD:10065' ( 246) RUNNING 7 5/8" CASG MW:10.0 VIS: 44 WASH AND REAM 8850-9436'. HAD 40' HARD FILL ON BTM F/ 9396-9436'_ CIRC BTMS UP AND COND MUD. MADE 10 STD SHORT TRIP. NO PROBLEMS, HOLE IN GOOD SHAPE. CIRC HOLE CLEAN, SPOTTED 180 BBLS PILL. NO MUD LOSS, 100% RETURNS. POH W/ 20 STDS DP, PUMPED SLUG. BREAK KELLY. POH LD DP AND BHA. PULLED WEAR RING. SET TEST PLUG, CHANGED BTM RAMS TO 7 5/8". TEST DOOR SEALS. RU CASERS. RUN 7 5/8" CSG SLOW, CIRC @ 103/4" SHOE. 144 JTS IN HOLE. NO MUD LOSS WHILE RUNNING 7 5/8" CSG. RIH PU 3 1/2" DP MW: 8.8 VIS: 41 CIRC. NO MUD LOSS. FINISH RIH W/ 7 5/8" CSG. TOTAL 228 JTS. HAD 6' FILL ON BTM. PU 7 5/8" HANGER AND LANDING JT. BREAK CIRC SLOW. HOLE TAKING MUD AND PARTIALLY PACKING OFF. CIRC W/ PARTIAL RETURNS SLOWLY INCREASING PUMP RATE TO 8.5 BPM W/ GOOD RETURNS. SLIGHT SEEPAGE. PUMPED TOTAL 800 BBLS TO CLEAN UP HOLE AND COND MUD. LOST 130 BBLS MUD. TEST LINES. SET ASND CMT 7 5/8" CSG W/ SHOE @9423' AND FC @9339' BJ CMT'D PUMPING 20 BBLS WATER AHEAD. LD LANDING JT AND CLEARED OFF FLOOR. INSTALLED 7 5/8" PACKOFF AND TESTED. SET TEST PLUG. INSTALLED VARIABLE BORE RAMS IN BOTTOM AND 3 1/2" RAMS IN TOP. INJECT 175 BBLS MUD DOWN 10 3/4" X 7 5/8" ANNULUS. TEST BOPS. CHOKE MANIFOLD PIPE RAMS. CHOKE AND KILL LINE VALVES, FLOOR VAVLES AND BLINDS. TEST HYDRIL. PULLED TEST PLUG AND SET WEAR BUSHING. PU 6 3/4" BIT AND BHA. PU 3 1/2" DP. LD 5" KELLY - PU 3 1/2" KELLY. TEST UPPER AND LOWER KELLY COCKS. RIH PU 3 1/2" DP. DRILLING MW: 8.8 VIS: 41 RIH PU 3 1/2" DP. TAG CMT @9327'. DRLG PLUGS, FC @9339', GOOD CMT, FS @9423' WASHED TO BTTM. CIRC AND COND MUD INSIDE 7 5/8" CSG. DRLG F/ 9436-9819' NO PROBLEMS. MU 5.5" LINER MW: 8.8 VIS: 41 DRLG F/9819 T/10065. CBU. SHORT TRIP T/7-5/8" SHOE. HOLE GOOD. CBU. SWEEP SURF T/SURF. DROP EMS SURV. PUMP DRY JOB. POOH SLM-NO CXN. RU ATLAS WL. LOG OPEN HOLE GR/DIL/BHC/CNL/SP, W/GR T/8800'. RU CASG EQUIP. PU 5.5" LINER. RECEIVED Gas Oon~. t;ommission WELL : N-25 OPERATION: RIG : NABORS 18E PAGE: 4 07/08/94 (15) TD: 10065' ( 0) 07/09/94 (16) TD:10065 PB: 9234 07/10/94 (17) TD:10065 PB: 9234 CBU W/ CLEANOUT ASSY MW: 8.8 VIS: 43 MAKE UP 5 1/2" LINER, CIRCULATE LINER VOLUME, RD CSG EQUIP. RIH SLOWLY W/ LINER ON 3 1/2" DP, FILL EVERY 10 STDS. NO PROBLEMS. CBU, BRINGING RATES UP SLOWLY. CMT LINER W/ BJ. TEST LINES. BUMPED PLUG. SET HANGER AND SET LINER TOP PACKER. RELEASE F/ LINER. REVERSE OUT 10+ BBL EXCESS CMT., ALL SPACER. NO MUD LOSS. BREAK DOWN HEAD, CLEAR FLOOR, POH LD RUNNING TOOL. RIH W/ 6 3/4" BHA. CUT DRILLING LINE, ADJ BRAKES. LD BHA, PU MILL, 2 7/8" STRING. RIH W/ CLEANOUT ASSEMBLY. CBU W/ CLEANOUT ASSEMBLY. TAGGED LANDING COLLAR ON DEPTH. RUN COMPLETION MW: 8.5 Seawater CBU. TEST LINER. RU AND REVERSE CIRCULATE SPACER AND DISPLACE WELL TO INHIBITED SEA WATER, CLEANED SURFACE EQUIPMENT. TEST LINER/CASING. HELD OOK W/ SEA WATER. POH LD 3 1/2" DP, 2 7/8" DP, 3 1/8" DC. BREAK KELLY. PULL WEAR RING, RIG UP AND RUN 4 1/2" 12.6# 13 CR TBG AND SABL-3 PACKER COMPLETION ASSEMBLY. RELEASE RIG MW: 8.5 Seawater RUN 4 1/2" 12.6# 13 CR NSCT TBG. PU SCSSV RIG UP CONTROL LINES, TEST AND RIH W/ TBG AND CONTROL LINES, INSTALL SS BANDS. SPACE OUT TBG. PICK UP HANGER. INSTALL CONTROL LINES AND TEST. LAND TBG AND TIGHTEN LOCK DOWNS. RD FLOOR LD EXCESS EQUIP. ND BOPE. INSTALL CONTROL LINE THROUGH TBG SPOOL, TEST, INSTALL ADAPTER FLANGE, TEST. RU LUBRICATOR AND PULL 2 WAY CHECK. PRESS TBG. SET PKR AND TEST TBG. BLEED PRESSURE, PRESSURE ANNULUS, TEST. BLEED OFF TBG PRESSURE AND SHEAR RP. DISPLACE W/ 83 BBL DIESEL AND ALLOW TO U-TUBE. CLEAN PITS AND PREP TO RELEASE RIG. SUCK OUT CELLAR, INSTALL BPV, SECURE WELL. RELEASE RIG @2359 HRS ON 07/09/94. SIGNATURE: (drilling superintendent) DATE: RECEIVED Gas Carls. SURVEY REPORT B.P. ExPLORATiON g PAD, NUMBER N-25 PRUI)HOE BAY FIELD W.O.A. AUGUST 18, 1994 RECEIVED & Gas Cons. Cor~mission Anchor: ~9 Gyrodata Incorporated P.O. Box 79389 Houston, Texas 77279 713/461-3146 Fax: 713/461-0920 August 18, 1994 Ms. Marian Sloan B.P. Exploration Prudhoe Bay Drilling Department 900 E. Benson Blvd. Anchorage, Ak 99508 Re; Dear Ms Sloan N Pad ,Number N-25 Prudhoe Bay Field W.O.A Enclosed please find one (1) original and six copies (9) of the completed survey of Well Number # N-25 We would like to take this opportunity to thank you for using Gyrodata and we look forward to serving you in the future. ,. Sincerely Rob Shoup Assistant Operations Manager RJS/gr Serving the Worldwide Energy Industry with Precision Survey Instrumentation A Gyro da t a D i r e c t i o n a I Survey for B.P. EXPLORATION WELL: N PAD, NUMBER N-25 Location: PRUDHOE BAY FIELD, W.O.A. ALASKA Job Number: AK0794G232 Run Date: 30-Sep-94 17:19:37 Surveyor: TOM STODDARD Calculation Method: MINIMUM CURVATURE Survey Latitude: 70.315000 deg. N Sub-sea Correction from Vertical Reference: 72.9 ft. Bearings are Relative to True North · Vertical Sect±on Calculated from Hell Head Locat±on Closure Calculated from Hell Head Local±on Hor±zontal Coord±nates Calculated from Local Hor±zontal Reference A Gyr oda t a D i r e c t i ona i Survey B.P. EXPLORATION WELL: N ~AD, NUMBER N-25 Location: PRUDHOE BAY FIELD, Job Number: AK0794G232 W.O.A. ALASKA MEASURED I N C L AZIMUTH DOGLEG VERTICAL SUBSEA VERTICAL DEPTH SEVERITY DEPTH DEPTH SECTION feet deg. deg. deg./ feet feet feet 100 ft. CLOSURE DIST. AZIMUTH feet deg. Page 1 HORIZONTAL COORDINATES feet 0.0 0.00 0.00 0.00 0.0 -72.9 0.0 0.0 0 - 9963 FT. GYRO SURVEY RUN IN 4 1/2" TUBING MEASURED DEPTHS REFERENCED TO AN R.K.B. OF 72.9 FT. ABOVE SEA LEVEL WIRELINE CORRECTION OF 10" ADDED TO ALL SURVEY DEPTHS 0.0 0.00 N 0.00 E 110.0 .58 333.41 .53 110.0 37.1 .5 .6 210.0 .61 332.62 .03 210.0 137.1 1.4 1.6 310.0 .84 339.29 .25 310.0 237.1 2.6 2.8 410.0 1.41 351.31 .62 410.0 337.1 4.5 4.8 510.0 1.65 349.83 .25 509.9 437.0 7.1 7.4 333.4' .50 N .25 W 333.2 1.42 N .72 W 334.6 2.57 N 1.22 W 339.6 4.47 N 1.66 W 343.5 7.11 N 2.10 W 610.0 2.39 346.03 .75 609.9 537.0 10.6 10.9 710.0 4.89 324.04 2.81 709.7 636.8 16.0 17.1 810.0 9.36 296.87 5.48 808.9 736.0 23.2 27.9 .910.~0 9.67 296.54 .31 907.5 834.6 30.6 43.1 1010.0 9.95 306.21 1.67 1006.1 933.2 39.4 59.7 ., ~ ~0.0 9.88 316.78 1.82 1104.6 1031.7 50.8 76.9 1210.0 11.09 323.57 1.73 1202.9 1130.0 64.8 94.9 1310.0 12.58 325.00 1.51 1300.8 1227.9 81.5 115.1 1410.0 15.46 325.57 2.88 1397.8 1324.9 101.4 139.0 1510.0 16.56 325.70 1.11 1493.9 1421.0 124.1 166.3 344.8 10.56 N 2.86 W 339.9 16.04 N 5.87 W 326.0 23.17 N 15.63 W 315.2 30.59 N 30.39 W 311.3 39.45 N 44.87 W 311.4 50.80 N 57.72 W 313.1 64.80 N 69.31 W 315.1 81.46 N 81.27 W 316.8 101.37 N 95.05 W 318.3 124.14 N 110.62 W 1610.0 17.33 325.28 .77 1589.6 1516.7 148.2 195.2 1710.0 18.78 324.32 1.49 1684.6 1611.7 173.5 226.1 1810.0 22.94 322.37 4.21 1778.1 1705.2 202.0 261.6 1910.0 25.31 321.00 2.44 1869.3 1796.4 234.0 302.5 2010.0 27.28 321.05 1.97 1959.0 1886.1 268.5 346.8 319.4 148.15 N 127.13 W 320.1 173.47 N 145.01 W 320.5 201.99 N 166.30 W 320.7 234.04 N 191.65 W 320.7 268.47 N 219.51 W A Gyro da t a D i r e c t i o n a i Survey B.P. EXPLORATION WELL: N PAD, NUMBER N-25 Location¢ PRUDHOE BAY FIELD, Job Number: AK0794G232 W,O,A, ALASKA Page MEASURED I N C L AZIMUTH DEPTH feet deg. deg. DOGLEG VERTICAL SUBSEA VERTICAL SEVERITY DEPTH DEPTH SECTION deg./ feet feet feet 100 ft. CLOSURE DIST. AZIMUTH feet deg. HORIZONTAL COORDINATES feet 2110.0 28.13 321.22 10,0 29,44 318.96 ~ ±0 0 29,99 319,08 2410,0 29,52 317,44 2510,0 29,28 316,10 .86 .70 .56 .94 .70 2047,5 1974,6 304,7 2135,2 2062,3 341,6 2222.,0 2149,1 379,0 2308,8 2235,9 416,0 2395,9 2323,0 451,8 393.3 320.8 441.4 320.7 491.0 320.5 540.6 320.3 589.6 320.0 304.67 N 248.69 W 341.59 N 279.59 W 379.01 N 312.10 W 416.05 N 345.'14 W 451.82 N 378.76 W 2610.0 29.80 316.84 2710.0 30.28 316.85 2810.0 30.55 317.56 2910.0 31.07 317.86 3010.0 30.30 317.79 .64 .48 .45 .54 .77 2482.9 2410.0 487.6 2569.5 2496.6 524.1 2655.7 2582.8 561.2 2741.6 2668.7 599.1 2827.6 2754.7 636.9 638.8 319.8 688.8 319.5 739.4 319.4 790.6 319.3 841.6 319.2 487,57 N 412,71 W 524.09 N 446,95 W 561,24 N 481,34 W 599,13 N 515,81 W 636,95 N 550,07 W 3110.0 30.60 317.82 3210.0 29.51 317.41 3310.0 29.25 316.88 3410.0 27.81 316.03 3510.0 26.71 315.45 [ !0.0 26.35 315.56 3,10.0 25.98 315.54 3810.0 26.13 315.75 3910.0 26.49 316.43 4010.0 27.02 316.81 .31 1.11 .37 1.49 1.13 .37 .37 .18 .47 .56 2913.8 2840.9 674.5 3000.4 2927.5 711.5 3087.5 3014.6 747.5 3175.4 3102.5 782.1 3264.3 3191.4 814.9 ., 3353.7 3280.8 846 7 3443.5 3370.6 878.2 3533.3 3460.4 909.6 3623.0 3550.1 941.5 3712.3 3639.4 974.3 892.3 319.1 942.3 319.0 991.4 318.9 1039.1 318.8 1084.8 318.7 1129,4 318,6 1173,4 318,5 1217,3 318,4 1261,6 318,3 1306,6 318,2 674.49 N 584.11 W 711.49 N 617.87 W 747.46 N 651.23 W 782.08 N 684.13 W 814.89 N 716.09 W 846,74 N 747,39 W 878,22 N 778,26 W 909,62 N 808? 97 W 941,55 N 839,71 W 974,26 N 870,62 W 4110.0 26.92 318.28 4210.0 27.33 320.16 4310.0 27.93 319.10 4410.0 28.31 318.85 4510.0 28.56 320.31 .67 .95 .77 .41 .74 3801,4 3728,5 1007,7 3890,4 3817,5 1042,2 3979,0 3906,1 1077,6 4067,2 3994,3 1113,1 4155.1 4082,2 1149,4 1351.9 318.2 1397.5 318.2 1443.9 318.3 1491.0 318.3 1538.6 318.3 1007.72 N 901.23 W 1042.24 N 931.01 W 1077.57 N 961.04 W 1113.12 N 991.98 W 1149.37 N 1022.86 W A Gyro d a t a D i r e c t i o n a i Survey B.P. EXPLORATION WELL: N PAD, NUMBER N-25 Location; PRUDHOE BAY FIELD, Job Number: AK0794G232 W.O.A. ALASKA Page MEASURED I N C L AZIMUTH DEPTH feet deg. deg. DOGLEG VERTICAL SUBSEA VERTICAL CLOSURE SEVERITY DEPTH DEPTH SECTION DIST. AZIMUTH deg./ feet feet feet feet deg. 100 ft. HORIZONTAL C O O R D I N A T E S feet 4610.0 28.38 319.78 10.0 28.35 321.28 ~0 0 28.16 321.56 4910.0 28.38 322.15 5010.0 28.37 321.80 .31 .71 .23 .36 .17 4243.0 4331.0 4419.1 4507.2 4595.2 4170 4258 4346 4434 4522 .1 .1 .2 .3 .3 1185.9 1586.2 318.4 1222.6 1633.7 318.4 1259.6 1681.0 318.5 1296.8 1728.3 318.6 1334.3 1775.7 318.7 1185.92 N 1222.59 N 1259.59 N 1296.84 N 1334.28 N 1053.47 W 1083.66 W 1113.18 W 1142.44 W 1171.71 W 5110.0 28.01 322.74 5210.0 28.19 323.01 5310.0 27.99 323.15 5410.0 28.04 323.74 5510.0 28.09 322.28 .58 .23 .21 .28 .69 4683.3 4771.5 4859.8 4948.0 5036.3 4610 4698 4786 4875 4963 .4 .6 .9 .1 .4 1371 1409 1446 1484 1522 .6 1822.9 318.8 .2 1869.9 318.9 .8 1916.8 319.0 .6 1963.7 319.1 .1 2010.6 319.2 1371.64 N 1409.19 N 1446.84 N 1484.57 N 1522.15 N 1200.62 W 1229.05 W 1257.33 W 1285.31 W 1313.62 W 5610.0 28.27 320.65 5710.0 28.32 320.85 5810.0 28.49 320.25 5910.0 28.23 320.64 6010.0 28.18 320.59 .79 .11 .34 .32 .06 5124.4 5212.5 5300.4 5388~.4 5476.6 5051 5139 5227 5315 5403 .5 .6 .5 .5 .7 1559 1595 1632 1669 1705 .1 2057.8 319.3 .8 2105.2 319.3 .5 2152.7 319.3 .1 2200.2 319.3 .7 2247.5 319.4 1559.08 N 1595.79 N 1632.52 N 1669.14 N 1705.67 N 1343.04 W 1373.03 W 1403.26 W 1433.51 W 1463.50 W i0.0 28.17 319.88 ~ 0 0 28.27 320.14 6310.0 28.19 319.93 6410.0 27.83 319.29 6510.0 27.80 318.32 .33 .16 .12 .47 .45 5564.7 5652.8 5740.9 5829.2 5917.7 5491 5579 5668 5756 5844 .8 .9 .0 .3 .8 1742 1778 1814 1850 1885 ['0 2294.7 319.4 .2 2342.0 319.4 .5 2389.3 319.4 · 2 2436.2 319.4 .3 2482.9 319.4 1741.96 N 1778.20 N 1814.45 N 1850.23 N 1885.34 N 1493.70 W 1524.09 W 1554.47 W 1584.90 W 1615.63 W 6610.0 27.42 317.68 6710.0 27.33 317.16 6810.0 26.81 316.69 6910.0 26.49 316.80 7010.0 25.96 316.92 .48 .25 .56 .33 .54 6006.3 6095.1 6184.1 6273.5 6363.2 5933.4 6022.2 6111.2 6200.6 6290.3 1919.8 2529.2 319.4 1953.6 2575.2 319.3 1986.9 2620.7 319.3 2019.6 2665.5 319.3 2051.8 2709.6 319.2 1919.78 N 1953.64 N 1986.88 N 2019.56 N 2051.80 N 164 6.64 W 1677.75 W 1708.83 W 1739.57 W 1769.78 W A Gy r o da t a D i r e c t i o n a i S u r v e y B.P. EXPLORATION WELL: N PAD, NUMBER N-25 Location: PRUDHOE BAY FIELD, Job Number: AK0794G232 W.O.A. ALASKA Page MEASURED I N C L AZIMUTH DEPTH feet deg. deg. DOGLEG VERTICAL SUBSEA VERTICAL CLOSURE SEVERITY DEPTH DEPTH SECTION DIST. AZIMUTH deg./ feet feet feet feet deg. 100 ft. HORIZONTAL COORDINATES feet 7110.0 25.55316.50 ~.0 24.35316.08 . ~ 0 23.39 314.83 7410.0 23.26 316.10 7510.0 23.09 315.63 .44 1.22 1.08 .52 .25 6453.3 6543.9 6635,.4 6727.2 6819.1 6380 6471 6562 6654 6746 .4 .0 .5 .3 .2 2083.4 2113 .9 2142.8 2171.0 2199.2 2753.0 319.2 2795.2 319.1 2835.5 319.1 2875.1 319.0 2914.3 319.0 2083.43 N 2113.93 N 2142.77 N 2170.99 N 2199.23 N 1799.58 W 1828.72 W 1857.10 W 1884.87 W 1912.27 W 7610.0 22.70 315.70 7710.0 22.77 317.00 7810.0 23.05 317.63 7910.0 23.13 318.15 8010.0 22.92 317.96 .39 .51 .37 .22 .22 6911.3 7003.5 7095.6 7187.6 7279.6 6838 6930 7022 7114 7206 .4 .6 .7 .7 .7 2227.1 2255.0 2283.6 2312.7 2341.8 2953.2 318.9 2991.8 318.9 3030.7 318.9 3069.9 318.9 3109.0 318.9 2227.06 N 2255.02 N 2283.63 N 2312.73 N 2341.82 N 1939.46 W 1966.13 W 1992.52 W 2018.81 W 2044.96 W 8110.0 23.14 317.18 8210.0 22.95 317.44 · 8310.0 22.30 318.78 8410.0 20.87 317.38 8510.0 20.68 317.28 .37 .22 .83 .52 .19 7371.7 7463.7 7556.0 7649.0 7742.5 7298 7390 7483 7576 7669 .8 .8 .1 .1 .6 2370.7 2399.5 2428.1 2455.5 2481.6 3148.1 318.9 3187.2 318.8 3225.7 318.8 3262.5 318.8 3297.9 318.8 2370.69 N 2399.46 N 2428.09 N 2455.47 N 2481.55 N 2071.35 W 2097.89 W 2123.58 W 2148.14 W 2172.18 W ~.0 0 20.26 317.58 8810.0 20.19 316.97 8910.0 19.91 317.96 9010.0 19.55 317.74 .27 .17 .22 .43 .38 7836.1 7929.9 8023.7 8117.6 8211.8 7763 7857 7950 8044 8138 .2 .0 .8 .7 .9 2507.'4 2533.0 2558.4 2583.7 2608.7 3333.0 318.8 3367.8 318.8 3402.4 318.8 3436.6 318.7 3470.4 318.7 2507.37 N 2532.99 N 2558.39 N 2583.65 N .2608.68 N 2195.97 W 2219.45 W 2242.91 W 2266.09 W 2288.74 W 9110.0 19.04 319.24 9210.0 18.46 319.55 9310.0 17.89 319.40 9410.0 17.72 318.98 9510.0 15.73 319.64 .71 .59 .57 .21 2.00 8306.2 8400.9 8495.9 8591.1 8686.8 8233.3 8328,0 8423.0 8518.2 8613.9 2633.4 2657.8 2681.5 2704.7 2726.5 3503.4 318.7 3535.6 318.7 3566.8 318.7 3597.3 318.8 3626.1 318.8 2633,42 N 2657.82 N 2681.53 N 2704.68 N 2726.49 N 2310.64 W 2331.56 W 2351.83 W 2371.81 W 2390.58 W A Gyro da t a D i r e c t i ona I Survey B.P. EXPLORATION WELL: N PAD, NUMBER N-25 Location~ PRUDHOE BAY FIELD, Job Number: AK0794G232 W.O.A. ALASKA MEASURED I N C L AZIMUTH DEPTH feet deg. deg. DOGLEG VERTICAL SUBSEA VERTICAL CLOSURE SEVERITY DEPTH DEPTH SECTION DIST. AZIMUTH deg./ feet feet feet feet deg. 100 ft. 9610.0 15.22321.62 .J.O . 0 14 . 27 327 . 27 9910.0 13.77 328.78 9963 . 0 13 . 10 330 . 00 .73 8783.2 8710.3 .93 8879.8 8806.9 .80 8976.7 8903.8 .62 9073.7 9000.8 1.37 9125.3 9052.4 Final Station Closure: Distance: 3739.21 ft Page H O R I Z O N T A L COORDINATES feet 2747.1 3652.8 318.8 2767.7 3678.4 318.8 2788.3 3703.2 318.8 2808.8 3727.1 318.9 2819.4 3739.2 318.9 2747.11 N 2767.66 N 2788.28 N 2808.83 N 2819.43 N 2407.50 W 2423.00 W 2437.02 W 2449.85 W 2456.12 W Az: 318.94 deg. 7~' Z ~700,0 ~300,0 1900,0 t500,0 1100,0 700,0 300,0 100,0 B.P. EXPLORATION WELL: N PAD. NUMBER N-25 Location' PRUDHOE BAY FIELD, W.O.A. ALASKA AK0794G23£ DEFINITIVE <~ BEtTTBH HHI F ' ............ '~. . ...... ....... 2500,0 2100,0 1700,0 1300,0 900,0 500,0 100,0 FASTING <~) B.P. EXPLORATION WELL' N PAD, NUMBER N-25 6.0 Location' PRUDHOE BAY FIELD, W.O.A. ALASKA AKO794G232 DEFINITIVE 5,4 4,8 c~ ¢ 3,6 0,6 0,0 0,0 1000,0 2000,0 3000,0 4000,0 5000,0 F1EASUt~ED DEPTH (f'%) BOTTOM HOLE LOCATED MD: 9963,00 6000,0 Y000,0 8000,0 9000,0 10000,0 11000,0 B.P. EXPLORATION WELL: N PAD. NUMBER N-25 Loeakion' PRUDHOE BAY FIELD, W. 0.A. ALASKA AK0794G23£ DEFINITIVE a06,0 187,0 168,0 149,0 130,0 ..... 111,0 9S,O 73,0 ~4,0 35,0 BOTTOH HOLE LOCATED HO: 9963,00 0 0~000,0 3000,0 4000,0 5000,0 6000,0 7000,0 8000,0 9000,0 10000,0 11000,0 MEASURED DEPTH (qt) B.P. EXPLORA'I'[ON WELL' N PAD~ NUMBER N-25 35.0 Location' PRUDHOE BAY FIELD, W.O.A. ALASKA AKO794G232 DEFINITIVE Z 31,5 ~8,0 . / . / 84,5 i ..... i .......... ~. - ..... .... ...... ...... : ...... ....... : ..... : ...... 3,5 ..... ~ .... ~ ~ ..... ; ...... ; ..... : ...... ~ ..... : ..... ~ .... ;. . 0'00, ~000,0 3000,0 4000,0 5000,0 ~000,0 7000,0 8000,0 ~000,0 zO000,O ~000,0 MEASURE]3 ]3EPTH 3000,0 B.P. EXPLORATION WELL' N PAD, NUMBER N-25 Location' PRUDHOE BAY FIELD, W.O.A. ALASKA AK0794G232 DEFINITIVE Z 2700,0 ~lO0,O t800,0 1500,0 900,0 600,0 300,0 LBCaTEg 9963,00 0,01 1000,0 6000,0 7000,0 8000,0 9000,0 10000,0 PO00,O 3000,0 4000,0 5000,0 MEASURED DEPTH 11000,0 I3.1'~. I,;X1 'I,()I~.A'I'I()N WELl_,' N I~AI), NtJMI:~I~;It N ;~5 3%.0 LoeaLion PRLII)HOE t~AY i~'I. ELD, W.O.A. ALA$t(A AK0794G232 DEFINITIVE 348,5 342,0 335,5 -- 329,0 322,5 316,0 _C_) 30% ~.- N 303,0 296,5 290,0 HBLE ~ LFICATE]} .~~ / H]~', 9963,00 0,0 1000,0 2000,0 3000,0 4000,0 5000,0 MEASUAED DEPTH 6000.0 7000,0 8000,0 9000,0 10000,0 11000,0 ' Quality Control Comparisons B.P. EXPLORATION WELL: N PAD, NUMBER N-25 Location: PRUDHOE BAY FIELD, W.0.A. ALASKA Job Number : AK0794G232 / AK0794G232 INRUN/OUTRUN Comparison INRUN OUTRUN Depth Inc Inc Delta 510.0 1.56 1.65 -.099 1010.0 9.94 9.95 -.008 1510.0 16.50 16.56 -.065 2510.0 29.27 29.28 -.003 3510.0 26.75 26.71 .038 4010.0 26.96 27.02 -.059 4510.0 28.51 28.56 -.049 5010.0 28.39 28.37 .018 5510.0 28.02 28.09 -.067 6010.0 28.17 28.18 -.008 6510.0 27.76 27.80 -.042 7510.0 23.14 23.09 .050 7810.0 2.3.07 23.05 .025 8010.0 22.94 22.92 .021 8510.0 20.73 20.68 .047 9010.0 19.61 19.55 .064 9510.0 15.85 15.73 .124 9963.0 13.10 13.10 .000 INRUN Az 350.63 305.54 324.92 315.13 · 313.51 317.10 320.61 321.07 323.36 319.70 319.50 317.58 318.02 317.82 317.63 317.89 319.35 329.53 For Inclinations Greater than 10 degrees: Average Inclination Difference = .00586 deg. Average Azimuth Difference = -.0323 deg. OUTRUN Az 349.83 306.21 325.70 316.10 315.45 316.81 320.31 321.80 322.28 320.59 318.32 315.63 317.63 317.96 317.28 317.74 319.64 330.00 Delta .801 -.676 -.777 - .973 -1. 941 .293 .303 -.730 1.076 -.887 1.173 1.950 .388 -.138 .353 .154 - .290 - .473 B.P. EXPLORATION PRUDHOE BAY FIELD, W.O.A. ALASKA GYRO MULTISHOT IN-RUN OUT-RUN 110.000' .578 333 210.000 .605 332 310.000 .840 339 410.000 1.412 351 510.000 1.555 350 510.000 1.655 349 610.000 2.395 346 710.000 4.888 324 810.000 9.357 296 ~ 0.000 9.666 296 l~m0.000 9.939 305 1010.000 9.947 306 1110.000 9.883 316 1210.000 11.092 323 1310.000 12.578 324 1410.000 15.457 325 1510.000 16.499 324 1510.000 16.564 325 1610.000 17.325 325 1710.000 18.782 324 1810.000 22.936 322 1910.000 25.311 320 2010.000 27.277 321 2110.000 28.133 321 2210.000 29.441 318 2310.000 29.994 319 0.000 29.524 317 2510.000 29.275 315 2510.000 29.278 316 2610.000 29.798 316 2710.000 30.280 316 2810.000 30.552 317 2910.000 31.071 317 3010.000 30.298 317 3110.000 30.603 317 3210.000 29.512 317 3310.000 29.247 316 3410.000 27.811 316 3510.000 26.746 313 3510.000 26.708 315 3610.000 26.345 315 414 622 294 311 627 826 034 O38 875 544 538 213 777 568 995 570 920 697 279 320 371 999 .047 222 959 077 443 129 102 842 854 561 .856 791 819 413 883 034 511 452 556 9/30/94 3710.000 3810.000 3910.000 4010.000 4010.000, 4110.000 4210.000 4310.000 4410.000 4510.000 4510.000 4610.000 4710.000 ( !0.000 ~10.000 5010.000 5010.000 5110.000 5210.000 5310.000 5410.000 5510.000 5510.000 5610.000 5710.000 5810.000 5910.000 6010.000 6010.000 6110.000 . ~0.000 6~1o,o00 6410.oo0 6510.0o0 651o.oo0 661o.oo0 671o.0o0 681o.o00 691o.ooo 7OLO.OOO 7110.oo0 721o.o0o 731o.ooo 7410.ooo 751o.ooo 25.977 26.132 26.486 26,957 27 o16 26 920 27 330 27 925 28 313 28 512 28 561 28 379 28 349 28.156 28.381 28.392 28,374 28.006 28.194 27.993 28.038 28.024 28.o91 28.271 28.318 28.491 28.231 28,172 28.18o 28.171 28.272 28.194 27,832 27,756 27.797 27,421 27,329 26.815 26.492 25.955 25,553 24,349 23,392 23.260 23.137 315 539 315 745 316 433 317 lOO 316 807 318 279 320 157 319 lOO 318 846 320 614 320 311 319.781 321.279 321.556 322.155 321.o72 321.8o2 322.739 323.o13 323.148 323.739 323.357 322.281 320,645 320,849 320,246 320.636 319.7o4 320.590 319.884 32o.14o 319.935 319.294 319.495 318.322 317,676 317.162 316.691 316 804 316 923 316 505 316 078 314 828 316 098 317,585 7510.000 7610.000 7710.000 7810.000 7810.000' 7910.000 8010.000 8010.000 8110.000 8210.000 8310.000 8410.000 8510.000 ( '0.000 b~O.O00 8710.000 8810.000 8910.000 9010.000 9010.000 9110.000 9210.000 9310.000 9410.000 9510.000 9510.000 9610.000 9710.000 9810.000 9910.000 ~ 3.000 9963.000 23.088 22.701 22.766 23.071 23.046 23.131 22.944 22.923 23.135 22.946 22.301 20.868 20.730 20.683 20.418 20.264 20.187 19.915 19.610 19.547 19.040 18.460 17.889 17.719 15.854 15.729 15.220 14.618 14.270 13.770 13.104 13.104 315.635 315.701 317.004 318.017 317.629 318.151 317.821 317.960 317.177 317.442 318.782 317.380 317.633 317.281 317.404 317.579 316.974 317.960 317.893 '317.739 319.244 319.553 319.403 318.981 319.350 319.640 321.620 324.381 327.272 328.778 329.528 330.001 PRLTDHOE BAY FIELD, W.O.A. ALASKA 300994 FMT=' (11((Fl0.2) ,2X) 110.00 .58 210.00 .61 310.00 .84 410.00 1.41 510.00 1.56 510.00 1.65 610.00 2.39 710.00 4.89 810.00 9.36 910.00 9.67 1{ .00 9.94 1010.00 9.95 1110.00 9.88 1210.00 11.09 1310.00 12.58 1410.00 15.46 1510.00 16.50 1510.00 16.56 1610.00 17.33 1710.00 18.78 1810.00 22.94 1910.00 25.31 2010.00 27.28 2110.00 28.13 2210.00 29.44 2310.00 29.99 2~0.00 29.52 2~ 00 29.27 2510.00 29.28 2610.00 29.80 2710.00 30.28 2810.00 30.55 2910.00 31.07 3010.00 30.30 3110.00 30.60 3210.00 29.51 3310.00 29.25 3410.00 27.81 3510.00 26.75 3510.00 26.71 3610.00 26.35 3710.00 25.98 , 333 332 339 351 35O 349 346 324 296 296 305 306 316 323 325 325 324 325 325 324 322 321 321 321 318 319 317 315 316 316 316 317 317 317 317 317 316 316 313 315 315 315 .41 .62 .29 .31 .63 .83 .03 .04 .87 .54 .54 .21 .78 .57 .00 .57 .92 .70 .28 .32 .37 .00 .05 .22 .96 .08 .44 .13 .10 .84 85 56 86 79 82 41 88 O3 51 45 56 .54 -449.50 -1610.50 3794.00 2558.50 4011.00 -177.50 4221.00 4255.00 4552.00 2743.00 -307.00 3535.50 4065.50 4857.50 5118.00 5464.00 2912.50 3504.50 3364.50 3925.50 4055.00 3308.50 3489 00 3891 50 3243 50 3288 00 2771 00 2668 00 3225 50 3192 00 2819 00 3078.50 2604.00 3145.50 2546.50 2414.00 2682.50 2582.50 1802.00 2169.00 2165.00 3141.50 -3956.50 -3644.00 1294.00 -3219.50 -788.50 4143.00 622.50 1923.50 -1699.00 -4052.00 -5029.50 -3636.00 -3260.00 -2478.00 -2463.00 -2685.00 -5469.00 -5203.50 -5400.00 -5251.00 -5831.50 -6633.50 -6783.00 -6654.00 -7143.50 -7234.00 -7352.50 -7243.50 -7063.50 -7182.50 -7398.00 -7330.50 -7576.50 -7247.50 -7527.50 -7405.50 -7281.00 -7109.50 -7184.00 -7112.50 -7083.00 -6628.50 11.76 4.61 8.19 5.33 21.76 10.66 2.37 9.81 10.51 5.41 21.02 2.03 9.93 6.75 6.42 1.78 16.56 8.50 7.54 4.13 14.65 19.97 2.08 14.13 11.26 12.49 6.73 10.16 14.45 5.20 2.15 9.75 7 84 6 67 2 39 11 10 11 60 3 32 11 43 4.20 1.03 5.41 15.27 15.32 5.38 5.52 1.44 7.45 2.87 1.07 1.79 5.68 3.28 6.16 1.22 1.95 9.36 3.84 4.89 13.34 5.13 2.31 7.30 4.68 3.95 8.69 14.33 4.24 10.85 9.12 7.15 7.75 9.91 11.54 9.18 2.93 7.48 9.48 11.98 10.29 15.53 3.34 4.91 5.09 1542.93 467.81 603.64 124.57 102.84 65.64 158.34 56.19 82.44 186.21 70.55 96.33 68.11 48 75 182 84 98 90 71 00 91 80 117 74 147.98 51.12 64.03 193.12 136.51 811.36 78.77 51.12 53.02 50.03 62.36 48.13 47.32 91.67 70.86 91.49 49.94 59.77 46.75 50.35 102.59 49.09 106.97 633.05 762.30 1417.95 136.25 78.00 116.67 295.40 81.36 105.17 151.60 83.87 166.60 62.64 67.49 111.77 77.87 91.80 87.86 224.28 287.01 79.21 118.53 194.49 115.93 733.58 90.42 79.26 77.62 71.93 96.15 69.56 77.22 119.84 88.70 110.88 71.71 78.56 76.21 63.12 82.61 70.79 108.18 173.47 156.01 288.71 218.67 2S8.95 2.47 278.33 294.18 249.66 214.28 176.48 224.39 231.47 243.13 244.45 243.99 208.20 214.14 212.10 216.97 215.00 206.66 207.38 210.49 204.57 204.59 200.78 200.35 204.69 204.11 200 99 202 92 199 09 203 60 198 81 198 17 200 35 200.09 194.17 197.07 197.11 205.51 83.49 83.39 83.30 83.21 77.76 83.12 83.03 82.94 82.86 82.78 78.23 82.69 82.60 82.52 82.43 82.35 78.52 82.27 82.18 82.10 82.01 81.95 81.88 81.81 81.67 81.60 81.53 78.96 81.46 81.40 81.33 81.27 81.20 80.91 80.88 80.83 80.79 80.74 79.12 80.69 80.66 80.63 3810.00 3910.00 4010.00 4010.00 4110.00 4210.00 4310.00 4410.00 4510.00 4510.00 4610.00 4710.00 4810.00 4~ .00 5 ~.00 5010.00 5110.00 5210.00 5310.00 5410.00 5510.00 5510.00 5610.00 5710.00 5810.00 5910.00 6010.00 6010.00 6110.00 6210.00 6(~ .00 64~0.00 6510.00 6510.00 6610.00 6710.00 6810.00 6910.00 7010.00 7110.00 7210.00 7310,00 7410.00 7510.00 7510.00 26.13 26.49 26.96 27.02 26.92 27.33 27.93 28.31 28,51 28.56 28.38 28.35 28.16 28.38 28.39 28.37 28.01 28.19 27.99 28.04 28.02 28.09 28.27 28,32 28.49 28,23 28.17 28.18 28,17 28.27 28.19 27.83 27.76 27.80 27.42 27,33 26.81 26.49 25.96 25.55 24,35 23.39 23.26 23.14 23.09 315 316 317 316 318 320 319 318 320 320 319 321 321 322 321 321 322 323 323 323 323 322 320 320 320 320 319 320 319 320 319 319 319 318 317 317 316 316 316 316 316 314 316 317. 315. 75 43 10 81 28 16 10 85 61 31 .78 .28 .56 ,15 .07 .80 .74 .01 .15 .74 .36 .28 .65 .85 .25 64 70 59 88 14 93 ,29 .50 32 68 16 69 80 92 50 08 83 10 58 63 2217 0 2186 5 2493 5 2653 5 2166 O0 3113 O0 2734.50 2769.50 1717.50 2600.00 3045.00 3167.00 2493,50 2858.50 2710.00 3371.50 1782.50 2762.50 1863.00 2776.00 2324,50 2611.50 2530.50 2557 50 2383 O0 2380 50 1941 50 2061 O0 2748 50 1867 O0 1822 O0 1814 00 1376 O0 2217 50 1489,50 1643.00 1883.50 1865.50 1495.50 1180.50 1541,50 954.00 1299.50 -590.00 1186.50 -7059.50 -7130 50 -7050 50 -7082 O0 -7201 50 -6919 O0 -7174 O0 -7241 50 -7514.50 -7313.00 -7120.50 -7044.50 -7296.00 -7209.50 -7268.50 -6979.00 -7508.00 -7224.50 -7519.50 -7195.50 -7323,00 -7267.50 -7280.00 -7269.50 -7380.50 -7328.50 -7401.00 -7432.00 -7183.00 -7481.50 -7476.50 -7426.00 -7460,50 -7327.00 -7461.50 -7439.00 -7278.50 -7268,50 -7219,00 -7272 50 -7007 50 -7021 O0 -6941 50 -6951 50 -6933 50 10.00 19.10 38.19 17.49 11.95 6.00 17.48 8.93 17.60 25.54 2.65 15.87 6.58 10.00 9.88 18.20 14.46 18.04 10.82 10.77 10.99 2.15 11.91 20.22 10.91 6.09 17.96 10.32 7.59 5,15 11.20 23.62 42.48 14.09 21.00 18.20 9.53 16.01 20,27 14.29 13.48 14.62 12.40 28,69 16.84 5.77 15.43 4,01 14.24 3.09 5.79 13.65 .59 11.33 18.22 ,95 2,61 2.82 12.56 4.79 6.84 7.55 21.60 11.38 7.27 33.71 10.63 4.00 7.73 5.94 8.54 40.20 11,71 6.39 5.25 13.91 9.09 24.54 11.76 8.09 24.88 2.93 8.00 8.47 3.04 4.45 10,91 2,79 24.14 14.77 56 35 54 90 61 33 82 16 69 90 74 80 148 69 87 63 71 23 51 49 60 82 63 50 52 41 83 72 73.57 49.08 49.07 58.99 111.93 51.52 74.83 76.16 47.41 64,96 55.01 47.97 53.49 53.45 55.03 49,05 · 49.16 56.08 71,18 47,60 56.79 54.16 50.01 51.47 53.72 56,19 50.23 51.12 52.22 57.82 94.58 72.13 82.67 76.99 103.55 107.81' 78.15 149.67 110.90 106.60 87.44 85.61 136.38 64.41 114.84 85.36 71.83 68.68 73.14 105.19 76.67 135,28 79.43 75.15 88.95 88.04 67.79 86.37 79.41 69,54 74.93 72.02 68.54 91.34 79.40 72.02 68.02 76.34 76.42 67.76 75,25 79,24 80.46 80,74 87.51 118,78 197.55 197.16 199.60 200 67 196 85 204 37 200 99 201 06 192 96 199 69 203 29 204 35 198 99 201,76 200.57 205,94 193.44 201.06 194,01 201.23 197.72 199,89 199 29 199 50 198 O1 198 11 194 79 195 60 201.07 194.10 193,79 193,82 190.52 196.95 191.36 192,54 194.60 194.49 191.78 189.28 192.49 187.79 190.67 175.12 189.78 80.59 80.55 79.18 80.53 80.50 80.47 80.43 80.41 79.23 80.38 80.37 80.34 80.31 80,29 79.27 80.27 80.24 80.24 80,21 80.20 79,31 80.17 80.17 80.14 80.12 80.11 79,34 80.11 80.10 80.09 80.08 80.08 79.37 80,05 80.05 80.05 80.03 80.02 80.02 80.01 80.00 80.00 79.98 79.44 79.97 7610.00 7710.00 7810.00 7810.00 7910.00 8010.00 8010.00 8110.00 8210.00 8310.00 8410.00 8510.00 8510.00 8~' .00 87~0.00 8810.00 8910.00 9010.00 9010.00 9110.00 9210.00 9310.00 9410.00 9510.00 9510.00 9610.00 9710.00 9810.00 9910. O0 99~3. O0 9(' .00 22.70 22.77 23.07 23.05 23.13 22.94 22.92 23.14 22.95 22.30 20.87 20.73 20.68 20.42 20.26 20.19 19.91 19.61 19.55 19.04 18.46 17.89 17.72 15.85 15.73 15.22 14.62 14.27 13.77 13.10 13.10 315.70 317.00 318.02 317.63 318.15 317.82 317.96 317.18 317.44 318.78 317.38 317.63 317.28 317.40 317.58 316.97 317.96 317.89 317.74 319.24 319.55 319.40 318.98 319.35 319.64 321.62 324.38 327.27 328.78 329.53 330.00 869.00 1213.00 -768.00 1308.50 1376.00 -1523.50 762.00 1113.50 1062.50 -2540.00 834.50 -1883.50 1197.00 -69.50 -109.50 774.00 318.00 -3294.00 -122.50 -1818.00 -2107.50 -569.50 -852.50 -5701.00 -1270.00 -3376.50 -3518.50 -5435.50 -5279.50 -5456.00 -5450.00 -6941.00 -6872.00 -6939.50 -6895.00 -6894.50 -6813.00 -6956.50 -6938.50 -6925.00 -6439.00 -6699.00 -6413.50 -6591.50 -6721.00 -6681.50 -6622.50 -6611.00 -5613.50 -6639.00 -6257.50 -6101.50 -6318.00 -6270.00 -1795.00 -5940.00 -4991.50 -4797.00 -2370.00 -2560.00 -1844.50 -1827.00 2.15 7.04 34.57 25.25 14.28 10.53 16.73 13.63 4.27 8.50 9.68 14.41 10.39 9.28 35 26 19 08 16 03 11 25 6 98 55 11 37 73 37 68 48 50 14 67 11 45 8 74 9.01 6.77 6.40 10.06 13.27 4.48 11.43 26.19 6.74 4.35 8.56 13.91 19.24 11.60 11.35 8.98 9.58 4.64 10.36 15.30 13.57 17.52 17.82 18.26 11.80 20.94 15.93 3.66 11.07 2.52 2.40 15.05 6.54 9.00 15.71 17.33 62.85 50.07 60.74 56.36 62.36 47.91 51.49 54.97 56.47 52.57 52.67 49.16 66.04 57.03 129.57 82.36 67.22 68.42 62.95 476.19 59.61 88.71 81.60 50.46 51.93 52.26 60.62 76.47 100.23 55.88 50.44 80.86 81.52 90.44 80.86 78.11 71.39 72.27 75.45 74.58 72.22 84.63 74.74 81.44 80.23 97.63 90.41 71.81 81.85 76.12 87.18 98.90 165.14 85.58 83.51 73.58 120.45 87.20 92.75 102.46 69.47 78.58 187 18 190 08 173 64 190 82 191 36 167 31 186 29 189 18 188 78 158 34 187 15 163 53 190 36 179 40 179 05 186 71 182 77 149 43 178 94 163 70 160 83 174 81 172.21 107.37 167.85 145.74 143.56 113.42 115.72 108.56 108.42 79.95 79.93 79.44 79.90 79.79 79.45 79.95 79.94 79.92 79 92 79 91 79 49 79 89 79 87 79 86 79 85 79 84 79 52 79 82 79.80 79.79 79.77 79.74 79.55 79.72 79.70 79.69 79.67 79.66 79.63 79.64 WELL: N PAD, NUMBER N-25 000000000000 110.00 9963.00 B.P. EXPLORATION AK0794G232 BP EXPLORATION 09994 0.00 MINIMUM CURVATURE WELL: N PAD, NUMBER N-25 000000000000 110.00 .58 210.00 .61 310.00 .84 410.00 1.41 510.00 1.56 510.00 1.65 610.00 2.39 710.00 4.89 810.00 9.36 910.00 9.67 1010.00 9.94 I~ 0.00 9.95 1110.00 9.88 1210.00 11.09 1310.00 12.58 1410.00 15.46 1510.00 16.50 1510.00 16.56 1610.00 17.33 1710.00 18.78 1810.00 22.94 1910.00 25.31 2010.00 27.28 2110.00 28.13 2210.00 29.44 2310.00 29.99 2410.00 29.52 00 29.28 2610.00 29.80 2710.00 30.28 2810.00 30.55 2910.00 31.07 3010.00 30.30 3110.00 30.60 3210.00 29.51 3310.00 29.25 3410.00 27.81 3510.00 26.75 3510.00 26.71 3610.00 26.35 3710.00 25.98 3810.00 26.13 333.41 332.62 339.29 351 31 350 63 349 83 346 03 324 04 296 87 296 54 305.54 306.21 316.78 323.57 325.00 325.57 324.92 325.70 325.28 324.32 322.37 321 00 321 05 321 22 318 96 319 08 317 44 315 13 316 10 316 84 316 85 317 56 317 86 317.79 317.82 317.41 316.88 316.03 313.51 315.45 315.56 315.54 315.75 3910.00 4010.00 4010.00 4110.00 4210.00 4310.00 4410.00 4510.00 4510.00 4610.00 4710.00 4810.00 4910.00 ~0 O0 5110.00 5210.00 5310.00 5410.00 5510.00 5510.00 5610.00 5710.00 5810.00 5910.00 6010.00 6010.00 6110.00 6210.00 6310.00 '~' O.O0 6510.00 6510.00 6610.00 6710.00 6810.00 6910.00 7010.00 7110.00 7210.00 7310.00 7410.00 7510.00 7510.00 7610.00 26.49 26.96 27.02 26.92 27.33 27.93 28.31 28.51 28.56 28.38 28.35 28.16 28.38 28.39 28.37 28.01 28.19 27.99 28.04 28.02 28.09 28.27 28.32 28.49 28.23 28.17 28.18 28.17 28.27 28.19 27.83 27.76 27.80 27.42 27.33 26.81 26.49 25.96 25.55 24.35 23.39 23.26 23.14 23.09 22.70 316.43 317.10 316.81 318.28 320.16 319.10 318.85 320.61 320.31 319.78 321.28 321.56 322.15 321.07 321.80 322.74 323.01 323.15 323.74 323.36 322.28 320.65 320.85 320.25 320.64 319.70 320.59 319.88 320 14 319 93 319 29 319 50 318 32 317 68 317.16 316.69 316 80 316 92 316 50 316 08 314 83 316 10 317 58 315.63 315.70 7710.00 7810.00 7810.00 7910.00 8010.00 8010.00 8110.00 8210.00 8310.00 8410.00 8510.00 8510.00 8610.00 I' 0.00 80±0.00 8910.00 9010.00 9010.00 9110.00 9210.00 9310.00 9410.00 9510.00 9510.00 9610.00 9710.00 9810.00 9910.00 9963.00 9~63.00 22 23 23 23 22 22 23 22 22 20 20 20 20 20 20 19 19 19 19 18 17 17 15 15 15 14 14 13 13 13 .77 .07 .05 .13 .94 92 14 95 3O 87 73 68 .42 .26 .19 .91 .61 .55 .04 .46 .89 .72 .85 .73 .22 .62 .27 .77 .10 .10 317 O0 318 02 317 63 318 15 317 82 317 96 317 18 317 44 318 78 317 38 317 63 317 28 317 40 317 58 316.97 317.96 317.89 317.74 319.24 319.55 319.40 318.98 319.35 319.64 321.62 324.38 327.27 328.78 329.53 330.00 A Gyro da t a D i r e c t i ona i Survey for BoP. EXPLOP~ATION WELL: N PAD, NUMBER N-25 Location: PRUDHOE BAY FIELD, W.O.A. ALASKA Job Number: AK0794G232SS Run Date: 30-Sep-94 17:19:37 Surveyor: TOM STODDARD Calculation Method: MINIMUM CURVATURE Survey Latitude: 70.315000 deg. N Sub-sea Correction from Vertical Reference: 72.9 ft. Be~.~ings are Relative to True North Vertical Section Calculated from WellHead Location Closure Calculated from Well Head Location Horizontal Coordinates Calculated from Local Horizontal Reference A Gy r e d a t a D i r e c t i e n a 1 S u rv e y B.P. EXPLORATION WELL: N PAD, NUMBER N-25 Location! PRUDHOE BAY FIELD, Job Number: AK0794G232SS W.O.A. ALASKA Page SUBSEA I N C L AZIMUTH VERTICAL DOGLEG CLOSURE DEPTH DEPTH SEVERITY DIST. AZIMUTH feet deg. deg. feet deg./ feet deg. 100 ft. HORIZONTAL COORDINATES feet -72.9 -- 0~- 9963 MEASURED WIRELINE 0.00 0.00 0.0 0.00 0.0 0.0 FT. GYRO SURVEY RUN IN 4 1/2" TUBING DEPTHS REFERENCED TO AN R.K.B. OF 72.9 FT. ABOVE SEA LEVEL CORRECTION OF 10" ADDED TO ALL SURVEY DEPTHS 0.00 N 0.00 E 100.0 200.0 300.0 400.0 500.0 .59 332.92 172.9 .21 1.6 333.2 .75 336.82 272.9 .17 2.8 334.1 1.20 346.86 372.9 .48 4.8 337.8 1.56 350.38 472.9 .38 7.4 342.1 2.12 347.44 572.9 .56 10.9 344.3 1.07 N .54 W 2.14 N 1.03 W 3.77 N 1.50 W 6.13 N 1.94 W 9.28 N 2.58 W 600.0 700.0 800.0 900.0 1000.0 ( 00.0 1200.0 1300.0 1400.0 1500.0 3.97 332.14 672.9 2.05 17.1 341.7 7.74 306.73 772.9 4.51 27.9 331.0 9.56 296.66 872.9 2.13 43.1 319.0 9.85 302.96 972.9 1.21 59.7 312.6 9.90 313.38 1072.9 1.77 76.9 311.3 10.72 321.50 1172.9 1.75 94.9 31'2.5- 12.15 324.59 1272.9 1.58 115.1 314.5 14.72 325.42 1372.9 2.53 139.0 316.4 16.32 325.67 1472.9 1.49 166.3 318.0 17.19 325.35 1572.9 .83 195.2 319.2 14.02 N 4.76 W 20.58 N 12.09 W 27.99 N 25.21 W 36.47 N 40.00 W 47.15 N 53.59 W 60.53 N 65.77 W 76.71 N 77.86 W 96.26 N 91.51 W 119.16 N 107.22 W 143.97 N 124.26 W 1600.0 1700.0 1800.0 1900.0 2000.0 18.60 324.44 1672.9 1.40 226.1 320.0 22.71 322.48 1772.9 4.06 261.6 320.5 25.39 321.00 1872.9 2.42 346.8 320.7 27.41 321.07 1972.9 1.79 393.3 320.7 28.51 320.57 2072.9 1.10 441.4 320.8 170.34 N 142.80 W 200.41 N 165.12 W 235.41 N 192.76 W 274.16 N 224.10 W 315.37 N 257.64 W A Gyrodata B.P. EXPLORATION WELL: N pAD, NUMBER N-25 Location: PRUDHOE BAY FIELD, Job Number: AK0794G232SS W.O.A. ALASKA SUBSEA I N C L AZIMUTH VERTICAL DOGLEG DEPTH DEPTH SEVERITY feet deg. deg. feet deg./ 100 ft. ~00.0 29.68 319.01 ~00.0 29.72 318.12 2300.0 29.34 316.46 2400.0 29.74 316.76 2500.0 30.29 316.88 2600.0 30.66 317.62 2700.0 30.79 317.83 2800.0 30.46 317.81 2900.0 29.86 317.54 3000.0 29.29 316.97 3100.0 27.85 316.06 3200.0 26.67 315.46 3300.0 26.27 315.55 3400.0 26.03 315.61 3500.0 26.29 316.05 (~o00.0 26.78 316.64 3700.0 26.95 317.81 3800.0 27.25 319.79 3900.0 27.88 319.17 4000.0 28.33 318.94 4100.0 28.52 320.20 4200.0 28.37 320.29 4300.0 28.26 321.41 4400.0 28.29 321.92 4500.0 28.38 321.89 2172.9 1.20 2272.9 .78 2372.9 .76 2472.9 .64 2572.9 .48 2672.9 .47 2772.9 .62 2872.9 .53 2972.9 .85 3072.9 .50 3172.9 1.46 3272.9 1.06 3372.9 .37 3472.9 .31 3572.9 .31 3672.9 .52 '3772.9 .64 3872.9 .90 3972.9 .78 4072.9 .43 4172.9 .65 4272.9 .45 4372.9 .48 4472.9 .31 4572.9 .22 Directional CLOSURE DIST. AZIMUTH feet deg. 491.0 320.6 540.6 320.4 589.6 320.1 638.8 319.8 739.4 319.5 790.6 319.4 841.6 319.2 892.3 319.1 942.3 319.1 991.4 319.0 1039.1 318.8 1129.4 318.7 1173.4 318.5 1217.3 318.4 1261.6 318.3 · 1306.6 318.2 1351.9 318.2 1397.5 318.2 1443.9 318.3 1538.6 318.3 1586.2 318.3 1633.7 318.4 1681.0 318.5 1728.3 318.6 1775.7 318.7 Survey HORIZONTAL COORDINATES feet 357.85 N 293.72 W 400.73 N 331.47 W 442.36 N 369.87 W 483.44 N 408.79 W 525.55 N 448.30 W 568.80 N 488.22 W 612.88 N 528.26 W 656.66 N 567.94 W 699.74 N 607.15 W 741.42 N 645.63 W 781.10 N 817.96 N 853.46 N 888.49 N 923.71 N 959.84 N 997.02 N 1035.45 N 1075.13 N 1115.47 N 1156.76 N 1198.36 N 1240.17 N 1282.33 N 1324.79 N 683.20 W 719.10 W 753.98 W 788.31 W 822.54 W 856.99 W 891.44 W 925.15 W 958.97 W 993.98 W 1029.04 W 1063.71 W 1097.69 W 1131.04 W 1164.29 W Page A Gyro da t a D i r e c t i ona i Survey B.P. EXPLORATION WELL: N PAD, NUMBER N-25 Location~ PRUDHOE BAY FIELD, Job Number: AK0794G232SS SUBSEA I N C L AZIMUTH DEPTH feet deg. deg. W.O.A. ALASKA VERT I CAL DOGLEG DEPTH SEVERI feet deg. / 100 ft. 4600.0 28.05 322.63 4672.9 '~00.0 28.19 323.01 4772.9 ~-_~00 0 28.00 323.24 4872.9 4900.0 28.05 323.33 4972.9 5000.0 28.17 321.60 5072.9 5100.0 28.30 320.76 5172.9 5200.0 28.44 320.44 5272.9 5300.0 28.28 320.57 5372.9 5400.0 28.18 320.59 5472.9 5500.0 28.18 319.91 5572.9 5600.0 28.25 320.09 5672.9 5700.0 28.06 319.70 5772.9 5800.0 27.81 318.81 5872.9 5900.0 27.56 317.92 5972.9 6000.0 27.35 317.29 6072.9 (~ 90.0 26.88 316.75 6~00.0 26.49 316.80 6300.0 25.91 316.88 6400.0 25.29 316.41 6500.0 24.05 315.68 6172.9 6272.9 6372.9 6472.9 6572.9 6600.0 23.34 315.35 6672.9 6700.0 23.17 315.87 6772.9 6800.0 22.86 315.67 6872.9 6900.0 22.74 316.57 6972.9 7000.0 22.98 317.47 7072.9 .53 .23 .22 .40 .73 .42 .26 .32 .07 .32 .15 .25 .46 .47 .31 .52 .33 .53 .61 1.17 .85 .39 .33 .47 .40 CLOSURE TY DIST. AZIMUTH feet deg. 1822.9 318.8 1916.8 318.9 1963.7 319.0 2010.6 319.1 2057.8 319.2 2105.2 319.3 2152.7 319.3 2200.2 319.3 2247.5 319.4 2342.0 319.4 2389.3 319.4 2436.2 319.4 2482.9 319.4 2529.2 319.4 2575.2 319.4 2620.7 3i'9.3 2665.5 319.3 2753.0 319.2 2795.2 319.2 2835.5 319.1 2875.1 319.1 2914.3 319.0 2953.2 319.0 2991.8 318.9 3030.7 318.9 HORIZONTAL COORDINATES feet 1367.22 N 1409.77 N 1452.46 N 1495.16 N 1537.49 N 1579.29 N 1621.02 N 1662.67 N 1704.15 N 1745.33 N 1786.46 N 1827.41 N 1867.57 N 1906.81 N 1945.18 N 1982.69 N 2019.34 N 2055.21 N 2090.03 N 2123.06 N 2154.30 N 2185.03 N 2215.47 N 2245.75 N 2276.58 N 1197.20 W 1229.48 W 1261.50 W 1293.28 W 1325.84 W 1359.55 W 1393.79 W 1428.17 W 1462.25 W 1496.52 W 1531.01 W 1565.49 W 1600.08 W 1634.96 W 1669.98 W 1704.92 W 1739.37 W 1772.99 W 1805.89 W 1837.71 W 1868.45 W 1898.49 W 1928.14 W 1957.28 W 1986.01 W Page A Gyro d a t a D i r e c t i o n a i Survey B.P. EXPLORATION WELL: N PAD, NUMBER N-25 Location: PRUDHOE BAY FIELD, Job Number: AK0794G232SS W.O.A. ALASKA Page SUBSEA I N C L AZIMUTH DEPTH feet deg. deg. VERT I CAL DOGLEG DEPTH SEVERITY feet deg. / 100 ft. CLOSURE DIST. AZIMUTH feet deg. HORIZONTAL COORDINATES feet 7100.0 23.12 318.07 O0.0 22.94 317.97 7300.0 23.13 317.18 7400.0 22.88 317.58 7500.0 22.04 318.53 7172.9 7272.9 7372.9 7472.9 7572.9 .25 .22 .37 .28 .95 3069.9 318.9 3109.0 318.9 3187.2 318.9 3225.7 318.8 3262.5 318.8 2308.08 N 2014.61 W 2339.69 N 2043.04 W 2371.08 N 2071.71 W 2402.32 N 2100.45 W 2433.07 N 2128.04 W 7600.0 20.82 317.35 7700.0 20.60 317.32 7800.0 20.36 317.47 7900.0 20.23 317.30 8000.0 20.04 317.49 7672.9 7772.9 7872.9 7972.9 8072.9 1.18 3297.9 318.8 .21 3333.0 318.8 .23 3367.8 318.8 .19 3402.4 318.8 · 33 3436.6 318.8 2462.15 N 2489.94 N 2517.42 N 2544.64 N 2571.62 N 2154.29 W 2179.91 W 2205.18 W 2230.21 W 2255.05 W 8100.0 19.70 8200.0 19.22 8300.0 18.63 8400.0 18.03 8500.0 17.75 oo.o 8700.0 15.27 8800.0 14.66 8900.0 14.28 9000.0 13.77 317.83 8172.9 318.71 8272.9 319.46 8372.9 319.44 8472.9 319.06 8572.9 319.54 8672.9 321.41 8772.9 324.18 8872.9 327.16 8972.9 328.77 9072.9 40 3470.4 318.7 59 3503.4 318.7 62 3535.6 318.7 58 3566.8 318.7 28 3597.3 318.8 · 74 3626.1 318.8- 87 3652.8 318.8 92 3678.4 318.8 81 3703.2 318.8 62 3727.1 318.9 2598.34 N 2624.70 N 2650.62 N 2675.80 N 2700.26 N 2723.31 N 2744.90 N 2766.18 N 2787.48 N 2808.66 N 2279.39 W 2302.92 W 2325.39 W 2346.93 W 2367.99 W 2387.84 W 2405.69 W 2421.89 W 2436.47 W 2449.74 W 9052.4 13.10 330.00 9125.3 1.37 3739.2 318.9 2819.43 N 2456.12 W Final Station Closure: Distance: 3739.21 ft Az: 318.94 deg. BAKER HUGHES INTEQ N-25 SURVEYS COMMENTS MWD ' 0.00' - 9939' EMS: 9459' - 10065' 10065' PROJECTED DATA - NO SURVEY RECEIVED /'-\UO 3 1 1994 Oil & Gas Con~. Commission BP EXPLORATION (Alaska) Inc. Pad N 25 slot #25 Prudhoe Bay North Slope, Alaska SURVEY LISTING by Baker Hughes INTEQ Your ref : PMSS <0 - 9339'> : EMS Lower <9459 - 10065> Our ref : svy4469 License : Date printed : 12-Aug-94 Date created : 11-Aug-94 Last revised : 12-Aug-94 Field is centred on 708179.340,5930615.440,999.00000,N Structure is centred on nTO 18 53.244,w148 54 53.297 Slot location is nTO 19 1.977,w148 54 37.629 Slot Grid coordinates are N 5966791.914, E 634411.875 Slot local coordinates are 888.00 N 537.00 E Reference North is True North BP EXPLORATION (Alaska) Inc. Pad N,25 Prudhoe Bay,North Slope, Alaska Measured Inclin. Azimuth True Vert. Depth Degrees Degrees Depth 0.00 0.00 0.00 0.00 196.00 0.80 310.80 195.99 288.00 1.10 334.10 287.98 380.00 1.30 349.60 379.96 473.00 1.60 350.30 472.93 565.00 2.10 340.80 564.88 657.00 3.50 344.00 656.77 750.00 6.40 308.80 749.43 842.00 9.50 293.00 840.55 934.00 10.10 295.10 931.21 1027.00 9.80 310.90 1022.82 1120.00 9.70 318.70 1114,48 1212.00 11.20 328.10 1204,96 1305.00 12.70 327.40 1295,94 1398.00 15.40 326.70 1386,16 1491.00 16.60 327.10 1475,55 1583.00 16.90 326.40 1563,65 1678.00 18.80 324.60 1654,07 1770.00 21.40 325.30 1740.46 1863.00 24.40 323.70 1826.12 SURVEY LISTING Page 1 Your ref : EMS Lower (9459 - 10065> Last revised : 12-Aug-94 R E C T A N G U L A R Dogleg Vert C 0 0 R D ! N A T E S Deg/lOOFt Sect 0.00 N 0.00 E 0.00 0.00 0,89 N 1.04 14 0.41 1.35 2.11 N 1.91 t4 0.52 2.84 3.93 N 2.48 14 0.41 4.61 6.25 N 2.89 ~/ 0.32 6.67 9.10 N 3.66 W 0.64 9.38 13.40 N 4.99 W 1.53 13.55 19.38 N 9.81 ~ 4.38 21.23 25.56 N 20.80 ~ 4.09 32.95 31.94 N 35.10 ~ 0.76 46.92 40.59 N 48.47 ~ 2.94 62.06 51.66 N 59.62 W 1.42 77.68 65.07 N 69.46 g 2.46 94.29 81.35 N 79.74 ~ 1.62 113.41 100.28 N 92.03 ~ 2.91 135.86 121.76 N 106.02 ~ 1.30 161.35 143.93 N 120.56 W 0.39 187.73 167.91 N 137.07 ~ 2.08 216.76 193.80 N 155.22 ~ 2.84 248.29 223.24 N 176.26 ~ 3.29 284.40 1954.00 26.00 323.20 1908,46 2046.00 27.50 323.60 1990.61 2138.00 28.60 320.80 2071.80 2231.00 29.50 321.10 2153.10 2323.00 30.10 323.20 2232.94 254.36 N 199.33 ~ 1.77 323.11 287.60 N 224.02 W 1.64 364.48 321.77 N 250.54 ~ 1.86 407.72 356.84 N 278.99 ~ 0.98 452.88 392.94 N 307.03 ~ 1.31 498.58 2415.00 29.20 320.40 2312.90 2508.00 29.20 318.70 2394.08 2600.00 29.60 319,40 2474.23 2694.00 30.20 320.10 2555.72 2787.00 30.10 319.40 2636.14 428.71 N 335.16 ~ 1.80 544.08 463.23 N 364.59 W 0.89 589.43 497.34 N 394.19 ~ 0.57 634.57 533.10 N 424.46 ~ 0.74 681.42 568.76 N 454.64 ~ 0.39 728.12 2880.00 30.80 319.70 2716.31 2972.00 30.20 319.70 2795.58 3064.00 30.20 319.40 2875.10 3156.00 30,40 319.70 2954.53 3223.00 29.30 318.00 3012.64 604.62 N 485.22 ~ 0.77 775.24 640.23 N 515.42 W 0.65 821.92 675.45 N 545.45 W 0.16 868.18 710.77 N 575.56 W 0.27 914.58 735.88 N 597.50 ~ 2.07 947.91 3341.00 29.10 318.70 3115,64 3434.00 27.30 318,30 3197.60 3537.00 26.40 316.90 3289.50 3618.00 26.30 317,60 3362.08 3711.00 25.80 318,00 3445.63 778.90 N 635.75 ~ 0.34 1005.41 811.82 N 664.87 W 1.95 1049.32 846.17 N 696.23 ~ 1,07 1095.76 872.57 N 720.63 W 0,40 1131.64 902.83 N 748.07 ~ 0.57 1172.42 3803.00 25.80 315.80 3528.46 3896.00 26.50 318,30 3611.95 3987.00 26.50 318,30 3693.39 4080.00 26.90 320,10 3776.47 4172.00 26.60 318,70 3858.63 932.06 N 775.42.~ 1,04 1212.35 962.06 N 803.34 W 1.40 1253.24 992.38 N 830.35 ~ 0,00 1293.80 1024.01 N 857.64 W 0.97 1335.56 1055.45 N 884.59 W 0.76 1376.95 4265.00 27.60 321,10 3941.42 4357.00 27.90 322.50 4022.84 4450.00 28.20 322.20 4104.91 4542.00 28.30 321.50 4185.96 4635.00 28.20 322.20 4267.88 1087.86 N 911.86 W 1.59 1419.30 1121.52 N 938.35 ~ 0.78 1462.13 1156.14 N 965.06 g 0.36 1505.85 1190.39 N 991.96 ~ 0.38 1549.39 1225.00 N 1019.15 ~ 0.37 1593.40 All data is in feet unless otherwise stated Coordinates from slot #25 and TVD from wellhead (72.90 Ft above mean sea level). Vertical section is from wellhead on azimuth 320.94 degrees. Declination is 0.00 degrees, Convergence is 1.02 degrees. Calculation uses the minimum curvature method. Presented by Baker Hughes INTEQ BP EXPLORATION (Alaska) Inc. SURVEY LISTING Page 2 Pad N,25 Your ref : EMS Lower <9459 - 10065> Prudhoe Bay,North Slopeu Alaska Last revised : 12-Aug-94 Measured Inclin. Azimuth True Vert. R E C T A N G U L A R Dogleg Vert Depth Degrees Degrees Depth C 0 0 R D I N A T E S Deg/lOOFt Sect 4727.00 28.10 323.60 4349.00 1259.62 N 1045.33 W 0.7'5 1636.78 4819.00 28.00 323.60 4430.19 1294.44 N 1071.00 W 0.11 1679.99 4911.00 28.20 323.90 4511.35 1329.39 N 1096.63 W 0.27 1723.27 5004.00 28.30 323.60 4593.27 1364.88 N 1122.66 W 0.19 1767.24 5097.00 27.90 325.30 4675.31 1400.52 N 1148.12 W 0.96 1810.96 5190.00 27.90 323.90 4757.50 1435.99 N 1173.33 W 0.70 1854.38 5282.00 27.80 324.60 4838.84 1470.87 N 1198.44 W 0.37 1897.29 5378.00 27.90 325.70 4923.72 1507.67 N 1224.07 W 0.54 1942.01 5474.00 27.70 325.30 5008.64 1544.57 N 1249.43 W 0.28 1986.64 5567.00 28.10 322.90 5090.84 1579.81 N 1274.94 W 1.28 2030.09 5662.00 28.30 325.00 5174.56 1616.10 N 1301.36 W 1.06 2074.91 5756.00 28.20 322.90 5257.37 1652.07 N 1327.54 W 1.06 2119.34 5851.00 28.10 322.20 5341.13 1687.65 N 1354.79 W 0.36 2164.14 5945.00 27.90 322.90 5424.13 1722.68 N 1381.62 W 0.41 2208.25 6040.00 27.90 322.20 5508.09 1757.98 N 1408.65 W 0.34 2252.68 6134.00 28.00 320.40 5591.12 1792.35 N 1436.20 W 0.90 2296.74 6228.00 28.10 320.80 5674.08 1826.51 N 1464.26 W 0.23 2340.94 6322.00 27.90 321.80 5757.08 1860.95 N 1491.85 W 0.54 2385.07 6415.00 27.60 321.10 5839.38 1894.82 N 1518.83 W 0.48 2428.37 6509.00 27.60 321.50 5922.69 1928.80 N 1546.06 W 0.20 2471.91 6604.00 27.20 321.50 6007.03 1963.02 N 1573.28 W 0.42 2515.63 6699.00 27.20 321.50 6091.52 1997.00 N 1600.31 W 0.00 2559.05 6794.00 26.70 320.70 6176.21 2030.51 N 1627.34 W 0.65 2602.11 6888.00 26.40 320.40 6260.30 2062.95 N 1654.04 W 0.35 2644.12 6983.00- 26.00 321.10 6345.53 2095.43 N 1680.58 W 0.53 2686.06 7078.00 25.50 319.00 6431.10 2127.07 N 1707.07 W 1.10 2727.33 7172.00 24.70 320.10 6516.22 2157.41 N 1732.94 W 0.98 2767.19 7267.00 23.70 318.00 6602.88 2186.83 N 1758.45 W 1.39 2806.10 7362.00 22.90 318.00 6690.13 2214.75 N 1783.60 W 0.84 2843.63 7456.00 23.40 318.70 6776.56 2242.37 N 1808.15 W 0.61 2880.55 7551.00 22.60 317.60 6864.01 2270.02 N 1832.91 W 0.96 2917.62 7646.00 22.30 318.70 6951.81 2297.04 N 1857.12 W 0.54 2953.85 7741.00 23.10 319.40 7039.45 2324.73 N 1881.14 W 0.89 2990.49 7834.00 22.90 320.10 7125.06 2352.46 N 1904.62 W 0.36 3026.82 7930.00 22.80 318.70 7213.52 2380.77 N 1928.88 W 0.58 3064.09 8023.00 22.80 320.10 7299.26 2408.13 N 1952.33 W 0.58 3100.11 8118.00 22.90 318.70 7386.80 2436.14 N 1976.34 W 0.58 3136.98 8210.00 22.90 319.40 7471.55 2463.18 N 1999.80 W 0.30 3172.76 8304.00 22.10 319.70 7558.40 2490.55 N 2023.14 W 0.86 3208.72 8396.00 20.50 320.40 7644.11 2516.16 N 2044.60 W 1.76 3242.14 8492.00 20.60 321.10 7734.00 2542.26 N 2065.92.W 0.28 3275.84 8587.00 20.30 320.10 7823.01 2567.90 N 2086.99 W 0.48 3309.03 8680.00 20.20 320.10 7910.26 2592.60 N 2107.64 W 0.11 3341.21 8775.00 20.00 318.70 7999.48 2617.39 N 2128.88 W 0.55 3373.84 8869.00 19.90 319.40 8087.84 2641.61 N 2149.90 W 0.28 3405.90 8964.00 19.50 319.40 8177.28 2665.93 N 2170.74 W 0.42 3437.91 9057.00 19.00 320.10 8265.08 2689.32 N 2190.55 W 0.59 3468.57 9151.00 18.50 319.70 8354.09 2712.44 N 2210.01W 0.55 3498.78 9244.00 18.10 320.10 8442.38 2734.77 N 2228.82 W 0.45 3527.97 9339.00 17.60 319.70 8532.81 2757.05 N 2247.58 W 0.54 3557.09 Tie-ln Point fr/ previous EMS All data is in feet unless otherwise stated Coordinates from slot #25 and TVD from wellhead (72.90 Ft above mean sea level). Vertical section is from wellhead on azimuth 320.94 degrees. Declination is 0.00 degrees, Convergence is 1.02 degrees. Calculation uses the minimum curvature method. Presented by Baker Hughes INTEQ BP EXPLORATION (Alaska) Inc. SURVEY LISTING Page 3 Pad N,25 Your ref : EHS Lower <9459 - 10065> Prudhoe Bay,North Slope, Alaska Last revised : 12-Aug-94 Measured Inclin. Azimuth True Vert. R E C T A N G U L A R Dogleg Vert Depth Degrees Degrees Depth C 0 0 R D I N A T E S Deg/lOOFt Sect 9459.00 16.93 321.98 8647.40 2784.65 N 2270.07 W 0.79 3592.70 9490.00 16.32 321.69 8677.11 2791.63 N 2275.56 W 1.98 3601.56 9521.00 15.51 322.18 8706.92 2798.32 N 2280.80 ~ 2.65 3610.06 9616.00 15.20 321.53 8798.53 2818.11 N 2296.34 ~ 0.37 3635.22 9711.00 14.54 325.60 8890.35 2837.71 N 2310.82 ~ 1.30 3659.57 9806.00 14.20 326.83 8982.37 2857.31N 2323.94 ~ 0.48 3683.06 9896.00 13.88 328.05 9069.68 2875.71N 2335.70 W 0.49 3704.75 9990.00 12.65 332.25 9161.18 2894.39 N 2346.45 ~ 1.66 3726.03 10027.00 12.76 332.69 9197.27 2901.60 N 2350.22 ~ 0.39 3734.01 10065.00 12.76 332.69 9234.33 2909.06 N 2354.06 ~ 0.01 3742.22 Projected Data - NO SURVEY All data is in feet unless otherwise stated Coordinates from slot #25 and TVD from wellhead (72.90 Ft above mean sea level). Vertical section is from wellhead on azimuth 320.94 degrees. Declination is 0.00 degrees, Convergence is 1.02 degrees. Calculation uses the minimum curvature method. Presented by Baker Hughes INTEQ BP EXPLORATION (Alaska) Inc. Pad N,25 Prudhoe Bay,North Slope, Alaska MD TVD Rectangular Coords. SURVEY LISTING Page 4 Your ref : EMS Lower <9459 - 10065> Last revised : 12-Aug-94 Comments in wel[path Comment 9339.00 8532.81 2757.05 N 2247.58 W Tie-In Point fr/ previous EMS 10065.00 9234.33 2909.06 N 2354.06 W Projected Data - NO SURVEY AIl data is in feet unless otherwise stated Coordinates from slot #25 and TVD from wellhead (72.90 Ft above mean sea level). Bottom hole distance is 3742.23 on azimuth 321.02 degrees from wellhead. Vertical section is from wellhead on azimuth 320.94 degrees. Declination is 0.00 degrees, Convergence is 1.02 degrees. Calculation uses the minimum curvature method. Presented by Baker Hughes INTEQ ALASKA OIL & GAS CONSERVATION COMMISSION Attn. LARRY GRANT 3001 PORCUPINE DR. ANCHORAGE AK, 99501. USA Date: 25 August 1994 RE: Transmittal of Data Sent by: ANCHORAGE EXPRS Dear Sir/Madam, Enclosed, please find the data as described below: #l DESCRIPTION q~~ J-01~09-11-13) b~l~ CN/GR LDWG TAPE+LIST ~.- 6~ 1-27/P-20 ~~ 1 CN/GR LDWG TAPE+LIST ~.~/'~B-'23 (12-32-11-14) CN/GR LDWG TAPS+LIST ECC No. Run # 1 3235.03 Run # 1 3987.02 Run # 1 4731.01 Run # 1 5764.04 Run # 1 5765.03 Run # 1 5808.03 Run # 1 6069.01 Run # 1 6238.03 Please sign and return to: Atlas Wireline Services 5600 B Street Suite 201 ,,~ Anchorage, AK 99518 ~ A t~~ey D. Paulson Ip Re c e ived ~_~/~_/~~////~ Date 1'~ lease st~n end ~etu~ ' Petrotechnical Date BP Exploration (Alaska) Inu 900 East Benson Boulevard Anchorage, Alaska 99908 Received by Please sign and return to:~ Petrotechnical Data Cente. BP Exploration (Alaska) Ina 900 East Benson Boulevard Anchorage, Alaska 99308 Received by ALASKA OiL & VaS' ~uN~.:KVATIOJ COMMISSION Attn. LARRY GRANT 3001 PORCUPINE DR. ANCHORAGE AK, 99501. USA Date: 4 August 1994 RE: . Transmittal of Data Sent by: ANCHORAGE EXPRS Dear Sir/Madam, Enclosed, please find the data as described below: WELL B-12 (43-31-1-14) 72- ~2 M-32 (41-01-11-12) fL/ . ~ N-25 (33-7-11-13) ~O--3 g~- B-04 (23-29-11-14) w-31 (31-17-11-12) DESCRIPTION 1 PLS STATIC FINAL BL 1 PLS STATIC RF SEPIA 1PLS STATIC FINAL BL 1 PLS STATIC RF SEPIA 1 PLS STATIC FINAL BL 1 PLS STATIC RF SEPIA 1 PL/STATIC FINAL BL 1 PL/STATIC RF SEPIA 1 PLS STATIC FINAL BL 1 PLS STATIC RF SEPIA 1 PLS STATIC FINAL BL 1 PLS STATIC RF SEPIA 1 PLS STATIC FINAL BL 1 PLS STATIC RF SEPIA ECC No. Run # 1 5791.03 Run ~ 1 Run ~ 1 1317.02 Run # 1 Run # 1 5790.01 Run # 1 Run $ 1 6238.02 Run # 1 Run # 1 4146.02 Run ~ 1 Run # 1 5807.01 Run # 1 Run # 1 5659.02 Run # 1 Please sign and return to: Atlas Wireline Serwices 5600 B Street Suite 201 · Anchorage, AK 99518 RECEIVED ALASKA OIL & GAS CONSERVATION COMMISSION Attn. LARRY GRANT 3001 PORCUPINE DR. ANCHORAGE AK, 99501. USA Date: I August 1994 RE: Transmittal of Data Sent by: ANCHORAGE EXPRS Dear Sir/Madam, Enclosed, please find the data as described below: WELL DESCRIPTION ECC No. (33-7-11-13) 1 PFC/JEWL. FINAL BL Run # 1 6238.01 1 PFC/PERF. FINAL BL Run # 1 1 PFC/JEWL. RF SEPIA Run # 1 1 PFC/PERF. RF SEPIA Run ~ 1 1 PFC/PERF FINAL BL 1 PFC/PERF RF SEPIA I PFC/PERF FINAL BL 1 PFC/PERF RF SEPIA 1 PLS SPNR FINAL BL 1 PLS SPNR RF SEPIA Run $ 1 6135.01 Run ~ 1 Run ~ i 5809.03 Run # 1 Run $ 1 4269.02 Run $ 1 (41-25-11-13) Please sign and return to: Atlas Wireline Services 5600 B Street Suite 201 Anchorage, AK 99518 Received~by, .//~/~_.~/~_/ Date: ~ ~ (~as'Co~.~IJC O..b .~ Please si~ ~d ~%~ Petrotec~iual Data BP Explo~tio~ (Alaska) 900 East Benson ~uleva~ ~ho~e, ~ ~08 ALASKA OIL & GAS CONSERVATION COMMISSION Attn. LARRY GRANT 3001 PORCUPINE DR. ANCHORAGE AK, 99501. USA Date: 13 July 1994 RE: Transmittal of Data ECC #: 6238.00 Sent by: ANCHORAGE XPRES Data: LDWG Dear Sir/Madam, Reference: BP N - 25 PRUDHOE BAY NORTH SLOPE, AK Enclosed, please find the data as described below: "Prints/Films: Prints/Films: /~IFL FINAL RF SEPIA /SSVD/MSD RF SEPIA ~HC FINAL RF SEPIA /~N FINAL RF SEPIA DIFL FINAL BLUELINE SSVD/MSD FINAL BL BHC FINAL BLUELINE CN FINAL BLUELINE Run # 1 Run # 1 Run # 1 Run # 1 Run # 1 Run ~ 1 Run # 1 Run # 1 Please sign and return to: Atlas Wireline Services 5600 B Street Suite 201 Anchorage, AK 99518 Attn. Rodney D. Paulson Received by: Date: RECEIVED ,JUL 5 ~ska Oil & Gas Cons. Commission Anchorage Ple~se:~gn and return to: Pe~rotechnical Data Center BP Exploration (Alaska) In¢ 900 East Benson Boulevard Anchorage, Alaska 99508 Received by Date ALASKA OIL & GAS CONSERVATION COMMISSION Attn. LARRY GRANT 3001 PORCUPINE DR. ANCHORAGE AK, 99501. USA Date: 16 July 1994 RE: Transmittal of Data Sent by: ANCHORAGE EXPRS Dear Sir/Madam, Enclosed, please find the data as described below: WELL N- 25 DESCRIPTION 1/~DI'FLAC LDWG TAPE+LST C~(j .~ ~ \ Z-27 /1 P~/~R nDW~ TAP~.+nST ~'~ PDK/GR LDWG TAPE+LST '~i~PDK/GR LDWG TAPE+LST ~/PDK/GR LDWG TAPE+LST ECC No. Run # 1 6238.00 Run # 1 4269.01 Run # 1 3752.01 Run # 1 6026.02 Run # 1 4146.01 Please sign and return to/3~as Wireline Serv~ / 5600 B Street ~ ( Sui~e 201 ~ ~ Anchorage, AK 99518// ~ ~~aulson Received by: _~. ~~ Date: RECEIVED dUL 1 8 t99~ Please sign and Petroteehnio~ ~%~ BP Exploration (Alaska) 900 Eas~ Banson Boul.mva~ , II I IIIII IIII1_ _ I I Rece~v~ blt I II I II Date iii i _ _11 Il MEMORANDU' State or'Alaska Alaska Oil and Gas Conservation Commission TO: THRU: · David J~ Chairman.~.%;=:' Blair Wondzell, P. I. Supervisor FROM: bby Foster, SUBJECT: Petroleum Inspector DATE: June 28, 1994 FILE NO: AINIF2BD.doc BOPE Test- Nabors 18E BPX- PBU - N-2 Prudhoe Oil Pool PTD # 94-73 Tuesday, June 28, 1994' I traveled this date to BPX's N-25,~being drilled by Nabors rig 18E and witnessed the BOPE Test. The BOPE stack on this was changed out on this well. The test went very good for a stack nippled up for the first time. As the attached AOGCC BOPE Test Report shows there were no failures. The rig was clean and well organized and all equipmeni seemed to be in good working condition. The location was clean and the~ was good access to all areas of the rig. Summary: Witnessed BOPE Test on Nabors rig 18E - Test time 3 hours - No failures. Attachment: AINIF2BD.XLS STATE OF ALASKA OIL AND GAS CONSERVATION COMMISSION BOPE Test Report OPERATION: Drlg: X Workover: Drlg Contractor: NABORS Rig No. 18-E PTD # Operator: BPX Rep.: Well Name: N-25 Rig Rep.: Casing Size: 10 3~4 Set @ 3288' Location: Sec. Test: Initial X Weekly Other 94-73 DATE: 6/'28/94 Rig Ph.# 659-4608 GARY GOODRICH BILL BIXBY 8 T. 11N R. 13E Meridian UMIAT MISC. INSPECTIONS: Location Gen.: OK Housekeeping: OK (Gen) Reserve Pit ~ Well Sign OK Drl. Rig OK BOP STACK: Annular Preventer Pipe Rams Pipe Rams Blind Rams Choke Ln. Valves HCR Valves Kill Line Valves Check Valve Test Quan. Pressure I 500~5000 LOW. 1 500~5000 500t5000 500~5000 500~5000 2 500~5000 I 500~5000 P/F P P P P P P P MUD SYSTEM: Visual Alarm Trip Tank P P Pit Level Indicators P P Flow Indicator P P Gas Detectors P P FLOOR SAFETY VALVES: Upper Kelly / IBOP Lower Kelly / IBOP Ball Type Inside BOP Test Quan. Pressure P/F I 500~5000 P 1 500~5000 P f 500~5000 P I 500~5000 P CHOKE MANIFOLD: No. Valves 14 No. Flanges 36 Manual Chokes 2 Hydraulic Chokes 1 Test Pressure P/F 500~5000 P 500~5000 P ACCUMULATOR SYSTEM: System Pressure Pressure After Closure 200 psi Attained After Closure System Pressure Attained 2 Blind Switch Covers: Master: Nitgn. Btrs: 8 BOTTLES 2200 A VERA GE 3,000 ! P 1,450 P minutes 41 sec. I minutes 18 sec. OK Remote: OK Psig. TEST RESULTS Number of Failures: 0 ,Test Time: 3.00 Hours. Number of valves tested 18 Repair or Replacement of Failed Equipment will be made within days. Notify the Inspector and follow with Written or Faxed verification to :he AOGCC Commission Office at: Fax No. 276-7542 Inspector North Slope Pager No. 659-3607 or 3687 If your call is not returned by the inspector within 12 hours please contact the P. I. Supervisor at 279-1433 REMARKS: GOOD TEST Distribution: orig-Well File c - Oper./Rig c - Database c - Trip Rpt File c -Inspector FI-021L (Rev. 2/93) STATE WITNESS REQUIRED? YES X NO 24 HOUR NOTICE GIVEN YES X NO Waived By: Witnessed By: AINIF2BD.XLS BOBBY D. FOSTER MEMORANDUM State or'Alaska Alaska Oil and Gas Conservation Commission TO: THRU: .David Johnston, Chairman DATE: June 28, 1994 Blair Wondzell, ~ ?/~ P.. I. Supervisor FROM: Bobby Fos~ SUBJECT: Petroleum In~lSector FILE NO: AINIF2BD.doc BOPE Test - Nabors 18E BPX- PBU - N-2 Prudhoe Oil Pool PTD # 94-73 ,T, uesda¥, J,une,,28, !994: I traveled this date to BPX's N-25 being drilled by Nabors rig 18E and witnessed the BOPE Test. The BOPE stack on this was changed out on this well. The test went very good for a stack nippled up for the first time. As the attached AOGCC BOPE Test Report shows there were no failures. The rig was clean and well organized and all equiEment seemed to be in good working condition. The location was clean and th~e was good access to all areas of the rig. .S.u, mmary: Witnessed BOPE Test on Nabors rig 18E - Test time 3 hours - No failures. Attachment: AINIF2BD.XLS STATE OF ALASKA OIL AND GAS CONSERVATION COMMISSION BOPE Test Report OPERATION: Drtg: X . Workover: Drlg Contractor:. 'r~ NABORS .... Rig No. Operator: ............ BPX "' Well Name: "' N'25 ..... ,, m~l. ,, ~ , ,,r , ,,~, Casing Size: .... 10 3~ ...... Set 3288' Test: i~itial .... ~" Weekly Other DATE: 6/28/94 __187E PTD # , g,4-~3 . Rig Ph.# ..... 6~,g,-46~08. .............. Rep,: GARY GOODRICH Rig Rep.: BILL BIXBY Location: Sec." 8 .....T,' "f 1N' "R. 'f3~ Me'rid'i~h .....U'I~IIAT ..... Test MISC. INSPECTIONS: FLOOR SAFETY VALVES: Ouan. Pressure P/F Location Gen,:. OK Well Sign OK Upper Kelly / IBOP I 500~5000 I P Housekeeping: 'OK (Sen) Drl. Rig ' OK" Lower Kelly / IBOP ' 1 500t5000 ].. p , Reserve Pit 'N~ ~ ~ Ball Type ' I i' '~7{500'0 'l.- P... lnside BOP '1'. i '~ '500t5000'"! P i . Test BOP STACK: Quan. Pressure P/F Test Annular Preventer f 500~5000 P CHOKE MANIFOLD: Pressure P/F PipeRams .... f' ' ~%~X)00 'P" No. Valves f4 500~5000 I P Pipe Rams LOW.,,' ,, f .' 500~5000 P No. Flanges 'j3~i' 500L5000 ! 'P" Blind Rams f . '50~~' "P ' Manual Chokes 2 ! ' P Choke Ln. Valves ~ '500t5'000 P ' Hydraulic Chokes '1 ' i P.~ HCR Valves ..... 2 ....500t~' ' P ..... * - Kill Line Valves .... f .... ~'00,1~,,' P ' ACCUMULATOR SYSTEM: Check Valve -Nra NMi Nra" System Pressure 3r000 I P ....... Pressure After Closure i.~'_" !,,450,_,.,"'.',!. P ' MUD SYSTEM: Visual Alarm 200 psi Attained After Closure minutes 41 sec. Tdp Tank P P System Pressure Attained 2 i'- minutes fS"sec. Pit Level Indicators P' '""P~ Blind Switch Covers: Master: (~K RemOte:" OK Flow Indicator "/5 ....... p Nitgn. Btl's: 8 BOTTLES ........ Gas Detectors '" P .... P '- 2200AVERAGE' "~' Psig. Number of Failures: 0 ,TestTime: 3.00 Hours. Number of valves tested 18 Repair or Replacement of Failed tEquipmentwill be made witl~in" ~ys. the Inspector and follow with 'Written or Faxed verification to the AOGCC Commission Office at:' ............ Fax No.i-, 276-NotifYTs42 Inspector North Slope Pager No. 659-36t)7 or 3687 within 12 hours please contact the P. I. Supervisor at 279-1433 IIf your call is not returned by the inspector '.'' .' 'I II IIII I I II IIIIllll. [ ..... I I I I I1[11111 Illlll I j I I. . I II IILI l, II._L_ I ,J . I Il_. I I IIIIIII. I II. II II I I I IJII REMARKS: Distribution: orig-Wetl File c - OperJRig c - Database c- Trip Rpt File c- Inspector GO,,OD.TEsT ...... . J ' ,I j ']j ,, , STATE wITNESS'REQUiRED? YES X NO Waived By: W~tnessed By: 24 HOUR NOTICE GIVEN YES X NO I III II IIII. I. I .ill IJlll II BOBBY D. FOSTER FI-021L (Rev. 2/93) AINIF2BD.XLS ALASKA OIL AND GAS CONSERVATION COMMISSION .~WALTER J. HICKEL, GOVERNOR 3OOl PORCUPINE DRIVE ANCHORAGE, ALASKA 99501-3192 PHONE: (907) 279-1433 TELECOPY: (907) 276-7542 May 25, 1994 Terry Jordan Drilling Engineer Supervisor BP Exploration (Alaska), Inc. P O Box 196612 Anchorage, AK 99519-6612 Re: Prudhoe Bay Unit N-25 · BP Exploration (Alaska), Inc. Permit No: 94-73 Sur. Loc. 887'NSL, 4743'WEL, Sec. 8, TllN, R13E, UM Btmhole Loc. 3787'NSL, 1806'WEL, Sec. 7, TllN, R13E, UM Dear Mr. Jordan: Enclosed is the approved application for permit to drill the above referenced well. The permit to drill does not exempt you from obtaining additional permits required by law from other governmental agencies, and does not authorize conducting drilling operations until all other required permitting determinations are made. Blowout prevention equipment (BOPE) must be tested in accordance with 20 AAC 25.035. Sufficient notice (approximately 24 hours) of the BOPE test performed before drilling below the surface casing shoe must be given so that a representative of the Commission may witness the test. Notice may be given by contacting the Commission petroleum field inspector on the North Slope pager at 659-3607. ~~m~2 Jo BY ORDER OF THE COMMISSION dlf/Enclosures cc: Department of Fish & Game, Habitat Section w/o encl. Department of Environmental Conservation w/o encl. STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION PERMIT TO DRILL 2O AAC 25.005 la. Type of work Drill [] Redrill[]llb. Type of well. Exploratoryr-! StratigraPhic Test [] Development Oil[] Re-Entry [] Deepen []1 Service [] Development Gas [] Single Zone [] Multiple Zone [] 2. Name of OperatOr 5. Datum Elevation (DF or KB) 10. Field and Pool BP Exp/oration KBE = 72. 7 f e e t Prudhoe Bay Fie/d/Prudhoe 3. Address 6. Property Designation Bay Poo/ P. 0. Box 196612. Anchorac/e. Alaska 99519-6612 ADL 28282 4. Location of well at surface 7. Unit or property Name 11. Type Bond(see 20 AAC 25.025) 887' NSL, 4743' WEL, SEC. 8, T11N, R13E Prudhoe Bay Unit At top of productive interval !8, Well number Number 3671' NSL, 1713' WEL, SEC. 7, T11N, R13E N-25 (33-7-11-13) 2S100302630-277 At total depth 9. Approximate spud date Amount 3787' NSL, 1806' WEL, SEC. 7, T11N, R13E 6/11/94 $200,000.00 12. Distance to nearest 13. Distance to nearest well 14. Number of acres in property,15. Proposed depth (MD a,~ TVD) property line ADL 28260-1141' feet N-10-22'@ 1071'MD feet 2560 10076'MD/9240' TVD feet 16. To be completed for deviated wells 17. Anticipated pressure (~e 2o ^^c 25.035 Kickoff depth ~'oo feet MaXimum hole angle27.3, o Maximum su,,ace 3330 ps~g ^, ,o,a~ depth (TVD) 8800'/4390 18. Casing program Setting Depth .... s~ze Specifications Top Bottom Quantity of cement Hole Casing Weight Grade Coupling Length M D TVD M D TVD (include stage data) 30" 20" 91.5# H-40 Weld 80' 30' 30' 110' 110' 260 sx Arcticset (Approx.) ...13-1/2" 10-3/4" 45.5# NT8OLHE Butt 3250' 29' 29' 32 79' 30 73' ~ 055 sx CS 1#/375 sx "G"/250 sx CS II , 9-7/8" 7-5/8" 29.7# NT95HS NSCC 9346' 28' 28' 9374' 8562' 9-7/8" 7-5/8" 29. 7# 13CR80 NSCC 702' 9374' 8562' 10076' 9240' 730 sx Class "G" Contingency Liner- 6-3/4" 5-1/2" 17# 13CR8O NSCC 852' 9224' 8417' 10076' 9240' 130 sx Class "G" , 19. To be completed for Redrill, Re-entry, and Deepen Operations. Present well 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 RECEIVED Surface Intermediate MAY 1 7 1994 Production Liner Alaska 0il & Gas Cons. Commission Perforation depth: measured Anchorage true vertical 20. Attachmen'ts 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 requirementsF-I 21. I' hereby certify that ~e folegoing is trUe and correct to the best of my knowledge Signed '"//,/~ / ,,~~ Title Dfi//ing Engineer Supervisor Date3- t '7 -.'~' t-j (/ / Commission Use Only Pe~'mit Number ~ IAPI number __ . _ ""lApproval date _ ISee cover letter ?~'- 7..~ ..J50-~:::~.~ ?-' ~ 2. ~ ~'/ j ~,.,~--~c,,g~,,~- ~ Jfor other requirements Conditions of approval SamPles required [] Yes [] No Mud log required []Yes [] No Hydrogen sulfide measures [] Yes [] No Directional survey requ~reo J~ Yes [] NO Required working pressure for BOPE []2M' I--]3M; ~5M; I'-110M' 1'-115M; Other: Original Signed By by order of Approved by David W. Johnston Commissioner [ne commission Date ~'~/~.~-/,-¢¥ Form 10-401 Rev. 12-1-85 Submit ,licate ]Well Name: IN-25 PBU Well Plan Summary [Type of Well (producer or injector): ! Producer Surface Location: 887' FSL 4743' FEL Sec 08 T11N R13E UM Target Location: 3671' FSL 1713' FEL Sec 07 T11N R13E UM Bottom Hole Location: 3787' FSL 1806' FEL Sec 07 T11N R13E UM I AFE Number: Estimated Start Date: [MD: ! 10076' i [TVD: Well Design (conventional, slimhole, etc.): [Rig: ]Nabors 18-E [ Operating days to complete: I 15 9240' I [ RT-GL 129.5' IKBE:I 72.7' [ Slimhole producer Formation Markers: Formation Tops MD' TVD (BKB) Base Permafrost 2053' 1983' Ugnu Zone 4A 4067' 3773' Top Seabee (CM3) 5980' 5473' Kuparu,k/Put River 'Absent Absent IKRU~CU 7669' 6973' ~ ~ {'~ _~ [ V ~Top Sag River 9374' 8562' TopShublik 9411' 8597' ~,~^v q '~ mn~ Top Sadlerochit 9500' 8683' ,,,,-, , ~ ,,,~-r Target 9500' 8683' Alaska 0il & Gas Cons. Total Depth 10076' 9240' Anch0ratl0 mission Casin /Tubin[ram: Hole Size Csg/ Wt/Ft Grade Conn Length Top Btm ,, Tbg O.D. MD/TVD MD/TVD 30" 20" 91.5# H-40 Weld 80' 30'/30' 110'/110' 13-1/2" 10-3/4" 45.5# NT80LHE Butt 3250' 29'/29' 3279'/3073' 9-7/8" 7-5/8" 29.7# NT95HS NSCC 9346' 28'/28' 9374'/8562' 9-7/8" 7-5/8" 29.7# 13Cr-80 NSCC 702" 9374'/8562' 10076'/9240' .... Contingency 6-3/4" 5 1/2" 17# 13Cr-80 NSCC 852' 9224'/8417' 10076'/9240' ,, , Tubing 4 1/2" 12.6 13Cr-80 NSCT 9147' 27'/27' 9174'/8369' Well Plan Summary Logging Pro Open Hole Logs: 13 1/2" Hole 9 7/8" Hole 6 3/4" Hole [ Cased Hole Logs: 7 5/8" Casing 5 1/2" Liner None None GR/DIL/BHCS/CNL/SP None Optional SBT and Gyro Mud Program'. [Special design considerations I None Surface Mud Properties: [ SPUD Density Marsh Yield 10 sec 10 min pH Fluid (PPG) Viscosity Point gel gel Loss 8.5 100 20 15 20 .9 15 tO tO tO .tO~ tO tO tO 9.5 300 60 60 80 10 25 ,Intermediate Mud Properties: I LSND Density 'Marsh Yield 10 sec 10 min pH Fluid (PPG) Viscosity Point gel gel Loss 9.0 35 10 5 10 9.5 5 , tO tO tO tO tO tO tO 10.0 50 15 10 20 10 10 'Production Mud Properties: I LSND . Density Marsh yield 10 sec 10 min pH Fluid (PPG) Viscosity Point gel. gel Loss 8.8 30 8 3 7 8 6 tO tO tO tO tO tO tO 9.2 45 13 10 15 9 8 , Directional: I KOP: 1700' ! Close Approach Well: Maximum Hole Angle: I 27.31 degrees I N-10 at 1071' (22' away) The above listed wells will be secured during the close approach. Well Control: Well control equipment consisting of 5000 psi W.P. pipe rams, blind rams, and annular preventer will be installed and is capable of handling maximum potential surface pressures. Diverter, BOPE and drilling fluid system schematics on file with AOGCC. [~ E ~ E I V E D MAY I 7 1994 Well Plan Summary Alaska 0il & Gas Cons. Commission Anchorage PROPOSED DRILLING AND COMPLETION PROGRAM WELL N-25 [ 07-11-13 ] PBU 1. MIRU. NU diverter and function test same. 2. Drill 13-1/2" hole. Run and cement 10,3/4", 45.5#, NT-80 Buttress casing to surface. ., Install blowout prevention equipment consisting of 5000 psi W.P. pipe rams, blind rams, and annular preventer. Maximum possible bottomhole pressure is 4390 psi at 8800' TVDss based on original reservoir pressure. Maximum possible surface pressure is 3330 psi based on a gas column to surface from 8600' TVDss and an oil column to 8800' TVDss. Function test BOPE to 5000/250 psi. . Test 10-3/4" casing to 3000 psi for 30 minutes. A formation leak-off test will be performed 10' below the 10-3/4" shoe. o Longstring Option: Direcfionally drill 9-7/8" hole to TD. Run a 7-5/8", 29.7#, NT-95 NSCC by 7-5/8", 29.7#, 13Cr-80 NSCC casing string and cement with Class G cement around the 7-5/8" shoe.. The annulus will be freeze protected with dry crude. Bump the plug with filtered seawater. Test casing to 3500 psi. 6a. Non-iongstring OptiOn: Directionally drill 9-7/8" hole to the 7-5/8" casing point above the top of Sag River. Run a 7-5/8", 29.7#, NT-95 NSCC casing string to within 10' of 9- 7/8" TD and cement with Class G cement around the 7-5/8" shoe. The annulus will be freeze protected with dry crude. 6b. Directionally drill the 6-3/4" hole to TD. Run 5-1/2", 17#, 13 Cr-80 NSCC liner from TD to 150' inside 7-5/8" casing shoe and cement using Class G cement. Clean out to 5-1/2" float equipment. Change over to filtered seawater completion fluid. Test casing and lap to 3500 psi. , Run 7-5/8" production packer on the 4-1/2", 12.64/, 13 Cr-80 NSCT tubing. A subsurface safety valve with dual control lines will be placed 100' below base of permafrost. Install and test Xmas tree. Freeze protect the tubing and annulus with diesel from surface to 2100' TVDBKB. Set and test packer. 8. The well will be perforated after the rig has been released. Fluids incidental to the drilling of a well will be injected down CC-2A. Tubing Size: 4-1/2", 12.6 # NT 13CR-80 tubing with 5 GLM's. REC[IVED & Gas Cons. Commission Anchorage Well Plan Summary CASING SIZE: 10-3/4" 10;3/4" SURFACE CASING CEMENT PROGRAM- BJ SERVICES CIRC. TEMP: 38°F PREFLUSH: 75 bbls fresh water ahead of lead slurry. LEAD CEMENT TYPE: COLD SET III ADDITIVES' retarder WEIGHT: 12.2ppg YIELD: 1.92ft3/sx MIX WATER: 10.53 gps APPROX. 45 SACKS: 1055 THICKENING TIME: Greater than 4 hrs. @ 50°F TAIL CEMENT TYPE: CLASS G . ADDITIVES: 2% A-7 +1 ghs FP-6L WEIGHT: 15.8 ppg YIELD: 1.15 ft3/sx APPROX. # SACKS: 375 MIX WATER: 4.95 gps THICKENING TIME: Greater than 3-1/2 hrs @ 50°F TOP JOB CEMENT TYPE: COLD SET II ADDITIVES' WEIGHT: 14.5 ppg YIELD: 0.96 ft3/sx MIX WATER: 3.89 gps APPROX. # SACKS' 250 THICKENING TIME: Greater than 2 hrs @ 50°F CENTRALIZER PLACEMENT: 1 Run 1 bow type centralizer per joint for the first 15 joints. 2. Place the centralizers in the middle of each joint with a stop collar. CEMENT VOLUME: 1. Lead slurry from TD to' surface w/100% excess (less the tail slurry volume). 2. Tail slurry volume 375 sx (to cover 500' of casing shoe w/100% excess). 3. Top job volume 250 sx. RECEIVED MAY 17 1994; A!aska Oil & Gas Cons. Commission Anchorage Well Plan Summary 7-5/8" LONGSTRING CASING CEMENT PROGRAM - BJ SERVICES CASING SIZE: 7-5/8" CIRC. TEMP: 140°F PREFLUSH: 20 bbls fresh water SPACER: 70 bbls BJ MCS-4 Spacer weighted 1.0 ppg above mud weight. LEAD CEMENT TYPE: CLASS G ADDITIVES: 3% A-2 + 0.4% FL-52 + 0.5% CD-32 + 1 ghs FP-6L WEIGHT: 11.0 ppg APPROX. # SACKS: 435 YIELD: 3.31 ft3/sx MIX WATER: 20.92 gps THICKENING TIME: 5 hrs FLUID LOSS: 150-250 cc/30 minutes FREE WATER: 0 cc WEIGHT: 15.8 ppg APPROX. # SACKS: 295 FLUID LOSS: 100-150 cc/30 minutes TAIL CEMENT TYPE: CLASS G ADDITIVES: 0.3% FL-52 + 0.5% CD-32 + 0.1% A-2 + 1 ghs FP-6L YIELD: 1.14 ft3/sx MIX WATER: 4.85 gps THICKENING TIME: 3-1/2 to 4-1/2 hrs FREE WATER: 0 cc CENTRALIZER PLACEMENT: 1. Run 2 Turbulator per joint to 300' MD above top of Sadlerochit. 2. Run 1 straight blade rigid centralizer every joint 300' above and below the Cretaceous interval. (only where lead cement is being pumped to the Cretaceous) 3. Run 1 solid body 7-3/4" x 9-1/4" centralizer or turbolator on first 2 joints inside 10-3/4" surface casing shoe. OTHER CONSIDERATIONS: Perform lab tests on mixed cement/spacer/mud program and ensure compatibility prior to pumping job. Ensure thickening times are adequate relative to pumping job requirement. Displace at 12 bpm. Mix lead slurry on the fly, batch mix the tail slurry. CEMENT VOLUME: 1. Lead slurry to 300' MD above top of Ugnu (top of Ugnu at 4067' MD) 2. Tail slurry to 500' MD above top of Sag River with 30% excess. 3. 80' MD 7-5/8", 29.7# capacity for float joints. Note: Hydrocarbon bearing zones are identified in the Ugnu interval. Well Plan Summary RECEIVED ~]AY 1 ? 1994, OJi & Gas CONS. Commission Anchora~e 5-1/2" PRODUCTION LINER CEMENT PROGRAM- BJ SERVICES CIRC. TEMP: 140° F BHST: 220° F at 8800' TVDSS. PREFLUSH: 20 bbls fresh water SPACER: 70 bbls BJ MCS-4 Spacer weighted 1.0 ppg above mud weight. CEMENT TYPE: CLASS G ADDITIVES: 150 ghs BA-86L + 0.6% CD-32 + 0.2% FL-33 + 0.2% A-2 + 0.5% gel + 2 ghs FP-10L WEIGHT: 15.7 ppg YIELD: 1.17 ft3/sx MIX WATER: 3.58 gps APPROX. # SACKS: 130 THICKENING TIME: 45 min. @ Surface + 3-4 hrs @ 140°F FLUID LOSS: less than 50 cc/30 minutes @ 140°F FREE WATER: 0 cc at 45° angle. NOTE: Ensure that a thickening time test is performed that simulates the shut down time incurred while rotating off of the liner. Note gellation tendencies ( if any ) of slurry when consistometer is m-started after shutdown period - additional retarder may be required - consult w/cementer. CENTRALIZER PLACEMENT: 1. Run 2 right hand turbolators per joint in open hole, 2. Run 1 fight hand turbulator per joint in lap, and none opposite intermediate casing shoe.. OTHER CONSIDERATIONS: Batch mix the cement slurry. Perform fluid loss test on the batch mixed slurry. Fluid loss should be 50 cc/30 min. or less. Report actual fluid loss on morning report. Displace @ 6-8 bpm. LINER CEMENT VOLUME: 1. Open hole (6-3/4" X 5-1/2") + 30% excess (adjust if a caliper log is run and it indicates severe washouts). 2. 5-1/2", 17# casing capacity below landing collar (80'). 3. 150' liner lap (6.875" x 5-1/2") 4. 200' of cement on top of the liner in the 7-5/8" casing. Well Plan Summary RECEIVED ~t~ Y ?? 1994 AnChorage PRUDHOF BAY DRILLING GROUP <KB> N-25 (PG) VERTICAL SECTION VlEX ;ect~on at: 320.94 VO Scale.' ~ ~nch = ~200 feet Dep Scale · 1 ~nch = ~200 feet i i, [ , w 05/ll/94 600-- , ' : ' , , , /nadri]] Schlumberger ~ i i I ..... i , i Narker Identification MD BKB SECTN INCLN ' ~ ' ' / I ~ i A} KB 0 0 0 0.00 i ~ I B} KOP/BUILD 2.5/100 700 700 0 0.00 I i I C] END 2.5/100 BUILD 1792 ~75~ 255 27.31 ....... ,,C~ .~ . ¢ D) 10-3/4" CASING POINT 3279 3073 938 27.3~ ~ ~ ~ ........ I E) DROP ~.5/~00 8054 7315 3~28 27.31 ~s~¢,,~s~- ~3] - - -%- ~ ........... ~ F) END ~.5/100 DROP 8874 8079 3424 ~5.00 ~ G) 7-5/8" CASING POINT 9374 8562 3553 ~5.00 ' ~ ' ~ "i' H) ....... TARGET ....... 9500 8683 3586 15.00 __ ~ .., . _. ~--q. ] . .~ J)TD ~0076 9240 3735 ~5.00 ~ ,. ., ~ ........ ~ ~ ,___ , _,. , _ ....... 6600 .., ',k~co¢ -p~ -, - ] .... ' .............. ~oo ,,, , 7800 - ' ~F ' s~oo_ :~ - - ~: ..... r .......... ~ ..... .............. ' . , ..... , ....... 9000- '~;; ..... e .......... ~ ..... ~ ' I ~oo i ' ' i I I ' I I ......... -~oo -soo o soo a~oo ~soo ~oo 3ooo ~soo d~oo ~soo s~oo ~ooo s~oo 7~oo · . Section Departure (knadr~]l (Cig3 N25P6 B~.52'7:~0 AN ~) ................ PRUDHOE BAY DRILLING GROUP Narker Identification NO N/S E/W ~o~/~=o ~.~/,oo ~oo o II REFERENCE TO OEPTH 9926 2870 2329 N-25 (P6) PLAN VIE~ CLOSURE ..... : 3735 feet at Azimuth 320,94 DECLINATION.: 29. 704 E SCALE ....... : ] inch = 500 feet DRAWN ....... : 05/~]/94 ,,, 325O ~50 FT TARGET RAEIUS I I ., ~ j -- 1750 ~ ~ , L ........ ~ ~' '/ ~250 ~lO00 · ~ ~ ~lt I% ~,I I ( ' 3250 3000 2750 2500 2250 2000 750 500 1250 1000 750 500 250 0 250 <-.WEST' EAST-> (Anaari]] (c)93 N25P6 B1.52 7:]4 AN WELL PERMIT CHECKLIST ~MINIST~TION .//'_2 UNIT# PROGRAM: exp [] dev~ redrll [] serv [] ON/OFF SHORE O~J 1. Permit fee attached ................... 2. Lease number appropriate ................ 3. Unique well name and number ............... 4. Well located in a defined pool ............. 5. Well located proper distance from drlg unit boundary. 6. Well located proper distance from other wells ...... ' 7. Sufficient acreage available in drilling unit ...... 8 If deviated, is wellbore plat included ........ 9. 'iiOperator only affected party ............... 10. Operator has appropriate bond in force .......... 11. Permit can be issued without conservation order .... 12. Permit can be issued without administrative approval. 13. Can permit be approved before 15-day wait ....... GEoLoGY 14. 15. ,:. 16. .~. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. Conductor string provided ............... ~ N Surface casing protects all known USDWs ........ ' ~ N CMT vol adequate to circulate on conductor & surf csg.. Y~ N CMT vol adequate to tie-in long string to surf csg . . . Y CMT will cover all known productive horizons ...... ~ N Casing designs adequate for C, T, B & permafrost .... ~ N Adequate tankage or reserve pit ............. Y~ N If a re-drill, has a 10-403 for abndnmnt been approved. Adequate wellbore separation proposed .......... ~ N If diverter required, is it adequate .......... ~ N Drilling fluid program schematic & equip list adequate . N BOPEs adequate ..................... ~ N BOPE press rating adequate; test to ~~ psig.~ N Choke manifold complies w/API RP-53 (May 84) ...... ~Y ~.~ Work will occur without operation shutdown ....... ~ N Is presence of H2S gas probable ............. Y / 30. Permit can be issued w/o hydrogen sulfide measures .... Y~/ 31. Data presented on potential overpressure zones ..... Y 32. Seismic analysis 9f shallow gas zones .......... Y/ 33. Seabed condition survey (if off-shore) ......... ; N 34. Contact name/phone for weekly progress reports .... / Y N [exploratory only] / GEOLOGY: ENGINEERING: COMMISSION: Comments/Instructions: HOW/jo - A:%FORMS%chekJist rev 03/94 Z 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. Tape Sub'file '2 is type: LIS TAPE HEADER PRUDHOE BAY UNIT CASED HOLE WIRELINE LOGS WELL NAME: API NUMBER: OPERATOR: LOGGING COMPANY: TAPE CREATION DATE: JOB NUMBER: LOGGING ENGINEER: OPERATOR WITNESS: SURFACE LOCATION SECTION: TOWNSHIP: RANGE: FNL: FSL: FEL: FWL: ELEVATION(FT FROM MSL 0) KELLY BUSHING: DERRICK FLOOR: GROUND LEVEL: WELL CASING RECORD N- 25 (33-7-11-13) 500292248100 BP EXPLORATION (ALASKA) INC. ATLAS WIRELINE SERVICES 18-AUG-94 6238.03 K. RICHARDS D. SCHULDT 8 liN 13E 887 4743 72.90 48.40 1ST STRING 2ND STRING 3RD STRING PRODUCTION STRING CURVE SHIFT DATA - ALL PASSES TO STANDARD (MEASURED DEPTH) BASELINE CURVE FOR SHIFTS OPEN HOLE CASING DRILLERS CASING BIT SIZE (IN) SIZE (IN) DEPTH (FT) WEIGHT (LB/FT) 10.750 3289.0 45.50 7.625 9423.0 29.70 5.500 10065.0 17.00 4.500 9265.0 12.60 BASELINE DEPTH 9389.5 9391.0 9399.0 9407.5 9425.5 9426.0 9426.5 9454.0 9461.0 9469.0 9470.0 9503.5 9504.5 EQUIVALENT UNSHIFTED DEPTH -- PBU TOOL CODE: PBU CURVE CODE: RUN NUMBER: PASS NUMBER: DATE LOGGED: LOGGING COMPANY: GRCH 9390.0 9391.5 9400.0 9408.5 9425.5 9426.0 9427.0 9454.5 9462.0 9470.0 9470.5 9504.0 9504.5 BCS GR 2 1 07-JUL-94 ATLAS WIRELINE SERVICES 95o .o 9507.0 9508.0 9508.5 9518.5 9519.0 9520.0 9521.0 9524.0 9582.5 9634.0 9635.0 9645.0 9645.5 9647.0 9649.0 9701.5 9721.5 9799.5 9803.0 9809.5 9810.0 9810.5 $ REMARKS: 9505.5 9507.5 9508.0 9509.0 9519.0 9520.0 9521.0 9521.5 9524.5 9582.5 9634.0 9634.5 9644.5 9645.5 9647.0 9648.5 9701.0 9722.0 9798.5 9802.0 9808.0 9808.5 9809.0 PDK-100/GR Log. LOG TIED INTO AN ACOUSTILOG RUN 07-JUL-94. LOGGING PROGRAM ORGANIZATION: 1. PUMPED 150 BBLS SEAWATER PRIOR TO LOGGING. 2. LOGGED FLUID PACKED PASS. 3. PUMPED 20 BBLS BORAX AWAY - LOGGED PASS. 4. PUMPED 50 BBLS BORAX AWAY - LOGGED PASS. 5. PUMPED 85 BBLS BORAX AWAY - LOGGED PASS. 6. PUMPED 90 BBLS SEAWATER AWAY - LOGGED FLUSH PASS. A DIFFUSION CORRECTED SGMA CURVE IS INCLUDED FOR EACH PASS. THE CURVE IS NAMED SGNT AND WAS CORRECTED WITH THE FOLLOWING PARAMETERS: BOREHOLE SIZE = 8" CASING SIZE = 7" SALINITY = 25,000 PPM A PDK POROSITY CURVE (PHI) WAS ALSO CREATED FOR THE FLUID PACKED PASS. SHIFT PROCEDURE AS FOLLOWS: 1. FIRST PASS GAMMA RAY DEPTH MATCHED TO PREVIOUS OPEN HOLE GAMMA RAY. 2. FIRST PASS SGMA DEPTH MATCHED TO "SHIFTED" FIRST PASS GAMMA RAY. 3. ALL SUBSEQUENT GAMMA RAY PASSES DEPTH MATCHED TO "SHIFTED" FIRST PASS GAMMA RAY. 4. ALL SUBSEQUENT SGMA (PDK) PASSES DEPTH MATCHED TO "SHIFTED" FIRST PASS SGMA. FILE HEADER FILE NUMBER: 1 EDITED CURVES Depth shifted and clipped curves for each pass in separate files. PASS NUMBER: 1 DEPTH INCREMENT: .5000 FILE SUMMARY PBU TOOL CODE START DEPTH STOP DEPTH GRCH 9370.0 9868.0 PDK 9382.0 9880.0 $ CURVE SHIFT DATA - PASS TO PASS (MEASURED DEPTH) BASELINE CURVE FOR SHIFTS PBU CURVE CODE GRCH PASS NUMBER: 1 BASELINE DEPTH SGMA 9365.0 9365.0 9398.5 9399.0 9406.0 9406.5 9434.0 9434.0 9443.0 9443.0 9450.0 9450.5 9451.0 9451.0 9465.0 9465.0 9488.5 9488.5 9489.0 9490.0 9490.0 9491.0 9513.5 9514.0 9530.5 9531.0 9540.0 9540.0 9556.0 9556.5 9584.0 9583.0 9593.5 9596.0 9596.5 9599.0 9629.0 9629.0 9634.5 9634.5 9642.0 9642.0 9644.0 9643.5 9650.0 9650.0 9671.0 9671.0 9697.0 9696.5 9722.0 9722.0 9735.5 9736.0 9738.5 9739.0 9796.0 9795.0 9805.5 9804.5 9900.0 9900.0 $ REMARKS: EQUIVALENT UNSHIFTED DEPTH ......... FLUID PACKED PASS - 150 BBLS SEAWATER AWAY PRIOR TO LOGGING. ALL PDK CURVES WERE SHIFTED WITH SGMA. GRCH WAS DEPTH MATCHED TO OPEN HOLE GAMMA RAY. CN WN FN COUN STAT / ??MATCH1B. OUT $ : BP EXPLORATION : N - 25 (33-7-11-13) : PRUDHOE BAY : NORTH SLOPE : ALASKA * FORMAT RECORD (TYPE# 64) ONE DEPTH PER FRAME Tape depth ID: F 16 Curves: Name Tool Code Samples Units API API API API Log Crv Crv Size Length Typ Typ Cls Mod 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 GRCH PDK 68 1 GAPI 4 4 00 201 24 BIF PDK 68 1 4 4 00 201 24 BKL PDK 68 1 CPS 4 4 00 201 24 BKS PDK 68 1 CPS 4 4 00 201 24 CSLS PDK 68 1 CU 4 4 00 201 24 LS PDK 68 1 CPS 4 4 00 201 24 MSD PDK 68 1 CU 4 4 00 201 24 RATO PDK 68 1 4 4 00 201 24 RBOR PDK 68 1 4 4 00 201 24 RICS PDK 68 1 4 4 00 201 24 RIN PDK 68 1 4 4 00 201 24 SGMA PDK 68 1 CU 4 4 00 201 24 SGMB PDK 68 1 CU 4 4 00 201 24 SS PDK 68 1 CPS 4 4 00 201 24 SGNT PDK 68 1 CU 4 4 00 201 24 PHI PDK 68 1 PU-S 4 4 00 201 24 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 64 * DATA RECORD (TYPE# 0) 958 BYTES * Total Data Records: 77 Tape File Start Depth = 9900.000000 Tape File End Depth = 9365.000000 Tape File Level Spacing = 0.500000 Tape File Depth Units = Feet **** FILE TRAILER **** LIS representation code decoding summary: Rep Code: 68 18208 datums Tape Subfile; 2 264 records... Minimum record length: 62 bytes Maximum record length: 958 bytes Tape Subfile 3 is type: LIS FILE HEADER FILE NUMBER: 2 EDITED CURVES Depth shifted and clipped curves PASS NUMBER: 2 DEPTH INCREMENT: .5000 FILE SUMMARY PBU TOOL CODE START DEPTH GRCH 9410.0 PDK 9422.0 $ CURVE SHIFT DATA - PASS TO PASS BASELINE CURVE FOR SHIFTS PBU CURVE CODE GRCH PASS NUMBER: 1 BASELINE DEPTH GRCH 9427.0 9428.0 9429.0 9429.5 9439.5 9440.5 9442.0 9448.0 9449.5 9450.5 9453.0 9454.5 9470.0 9471.5 9478.0 9479.0 9486.5 9487.0 9488.5 9489.0 9499.5 9500.5 9505.0 9506.0 9509.0 9516.0 9524.0 9525.0 9554.0 9556.5 9565.0 9566.0 9567.5 9579.5 9581.5 9601.5 9603.0 9609.5 9613.0 9614.0 9619.0 9620.0 9506.0 9506.5 9509.5 9517.0 9555.0 9557.0 9565.5 9566.0 for each pass in separate files. STOP DEPTH 9886.0 9898.0 (MEASURED DEPTH) EQUIVALENT UNSHIFTED DEPTH SGMA 9429.0 9430.0 9442.5 9449.0 9450.5 9451.0 9487.0 9488.0 9489.5 9490.5 9501.0 9501.5 9525.0 9525.5 9568.0 9579.5 9581.5 9604.0 9605.5 9611.5 9615.0 9615.5 9620.5 9621.0 9622.5 9623.0 9626.0 9635.0 9636.0 9675.0 9688.5 9690.0 9691.0 9691.5 9692.0 9701.0 9702.0 9703.0 9704.0 9711.5 9713.0 9721.0 9730.0 9732.5 9738.0 9739.0 9743.5 9763.0 9774.0 9774.5 9775.0 9779.5 9789.5 9808.0 9809.5 9810.5 9849.0 9849.5 $ REMARKS: 9623.0 9624.0 9626.5 9635.5 9636.0 9675.0 9689.0 9690.5 9691.0 9691.5 9692.5 9701.5 9702.0 9703.5 9704.0 9712.0 9713.5 9722.0 9722.0 9731.0 9734.0 9739.5 9740.0 9744.5 9763.5 9774.5 9775.0 9775.5 9780.0 9789.5 9808.0 9809.5 9810.0 9850.0 9850.5 BORAX PASS 1 - 20 BBLS AWAY. ALL PDK CURVES WERE SHIFTED WITH SGMA. CN WN FN COUN STAT / ? ?MATCH2A. OUT / ? ?MATCH2B. OUT $ : BP EXPLORATION : N - 25 (33-7-11-13) : PRUDHOE BAY : NORTH SLOPE : ALASKA * FORMAT RECORD (TYPE# 64) ONE DEPTH PER FRAME Tape depth ID: F 15 Curves: API API API API Log Crv Crv Name Tool Code Samples Units Size Length Typ Typ Cls Mod 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 GRCH PDK 68 1 GAPI 4 4 00 201 24 1 BIF PDK 68 1 4 4 00 201 24 1 BKL PDK 68 1 CPS 4 4 00 201 24 1 BKS PDK 68 1 CPS 4 4 00 201 24 1 CSLS PDK 68 1 CU 4 4 00 201 24 1 LS PDK 68 1 CPS 4 4 00 201 24 1 MSD PDK 68 1 CU 4 4 00 201 24 1 RATO PDK 68 1 4 4 00 201 24 1 RBOR PDK 68 1 4 4 00 201 24 1 RICS PDK 68 1 4 4 00 201 24 1 RIN PDK 68 1 4 4 00 201 24 1 SGMA PDK 68 1 CU 4 4 00 201 24 1 SGMB PDK 68 1 CU 4 4 00 201 24 1 SS PDK 68 1 CPS 4 4 00 201 24 1 SGNT PDK 68 1 CU 4 4 00 201 24 1 60 * DATA RECORD (TYPE# 0) 966 BYTES * Total Data Records: 72 Tape File Start Depth = 9900.000000 Tape File End Depth = 9365.000000 Tape File Level Spacing = 0.500000 Tape File Depth Units = Feet **** FILE TRAILER **** LIS representation code decoding summary: Rep Code: 68 17137 datums Tape Subfile: 3 177 records... Minimum record length: Maximum record length: 62 bytes 966 bytes Tape Subfile 4 is type: LIS FILE HEADER FILE NUMBER: 3 EDITED CURVES Depth shifted and clipped curves PASS NUMBER: 3 DEPTH INCREMENT: .5000 FILE SUMMARY PBU TOOL CODE START DEPTH GRCH 9408.0 PDK 9420.0 $ CURVE SHIFT DATA - PASS TO PASS BASELINE CURVE FOR SHIFTS PBU CURVE CODE GRCH PASS NUMBER: 1 BASELINE DEPTH GRCH 9427.0 9426.5 9428.5 9439.0 9438.5 9459.5 9459.5 9467.0 9467.0 9472.0 9471.5 9483.0 9484.0 9484.5 9485.0 9488.0 9488.5 9489.5 9490.0 9493.0 9499.0 9505.0 9504.5 9506.0 9505.0 9509.5 9508.5 9510.0 9509.5 9518.5 9519.5 9524.0 9523.5 9524.5 9560.5 9559.5 9579.5 9581.0 9588.5 9596.5 9609.5 9613.5 9616.5 9621.0 9622.0 9636.0 9635.0 9637.0 9635.5 9674.5 for each pass in separate files. STOP DEPTH 9886.0 9898.0 (MEASURED DEPTH) EQUIVALENT UNSHIFTED DEPTH SGMA 9427.5 9482.0 9482.5 9483.0 9484.0 9487.0 9488.0 9489.0 9490.0 9493.0 9498.5 9518.0 9518.5 9523.5 9577.5 9579.0 9588.0 9598.0 9609.5 9613.5 9616.0 9620.5 9621.0 9673.5 9675.0 9688.0 9689.5 9700.0 9701.0 9702.5 9703.0 9717.0 9722.0 9728.0 9753.0 9761.5 9769.0 9769.5 9770.0 9779.0 9788.5 9800.5 9802.5 9809.5 9810.5 9839.0 9843.0 9873.5 9874.0 9874.5 $ REMARKS: 9673.5 9687.0 9699.0 9699.5 9722.0 9808.0 9808.5 9688.0 9701.0 9702.0 9716.0 9727.5 9752.5 9760.5 9768.0 9768.5 9769.0 9778.0 9787.0 9799.0 9800.5 9838.0 9842.0 9873.0 9873.5 9874.0 BORAX PASS 2 - 50 BBLS AWAY. ALL PDK CURVES WERE SHIFTED WITH SGMA. CN WN FN COUN STAT / ? ?MATCH3A. OUT /??MATCH3B. OUT $ : BP EXPLORATION : N- 25 (33-7-11-13) : PRUDHOE BAY : NORTH SLOPE : ALASKA * FORMAT RECORD (TYPE# 64) ONE DEPTH PER FRAME Tape depth ID: F 15 Curves: Name Tool Code Samples Units GRCH PDK 68 1 GAPI BIF PDK 68 1 BKL PDK 68 1 CPS BKS PDK 68 1 CPS CSLS PDK 68 1 CU LS PDK 68 1 CPS API API API API Log Crv Crv Size Length Typ Typ Cls Mod 4 00 201 24 1 4 00 201 24 1 4 00 201 24 1 4 00 201 24 1 4 00 201 24 1 4 00 201 24 1 7 MsD PDK 68 1 8 RATO PDK 68 1 9 RBOR PDK 68 1 10 RICS PDK 68 1 11 RIN PDK 68 1 12 SGMA PDK 68 1 13 SGMB PDK 68 1 14 SS PDK 68 1 15 SGNT PDK 68 1 * DATA RECORD (TYPE# 0) Total Data Records: 72 CU 4 4 4 4 4 CU 4 CU 4 CPS 4 CU 4 966 BYTES * 4 00 201 24 4 00 201 24 4 00 201 24 4 00 201 24 4 00 201 24 4 00 201 24 4 00 201 24 4 00 201 24 4 00 201 24 6O Tape File Start Depth = 9900.000000 Tape File End Depth = 9365.000000 Tape File Level Spacing = 0.500000 Tape File Depth Units = Feet **** FILE TRAILER **** LIS representation code decoding summary: Rep Code: 68 35345 datums Tape Subfile: 4 169 records... Minimum record length: 62 bytes Maximum record length: 966 bytes Tape Subfile 5 is type: LIS FILE HEADER FILE NUMBER: 4 EDITED CURVES Depth shifted and clipped curves for each pass in separate files. PASS NUMBER: 4 DEPTH INCREMENT: .5000 FILE SUMMARY PBU TOOL CODE GRCH PDK $ CURVE SHIFT DATA - PASS TO PASS BASELINE CURVE FOR SHIFTS PBU CURVE CODE GRCH PASS NUMBER: 1 START DEPTH STOP DEPTH 9404.0 9886.0 9416.0 9898.0 BASELINE DEPTH GRCH 9408.0 9408.5 9427.0 9427.0 9428.0 9428.0 9428.5 9429.0 9428.5 9439.0 9439.5 9439.0 9448.0 9448.5 9449.0 9471.5 9471.5 9476.5 9477.5 9484.0 9485.0 9485.5 9488.5 9489.0 9489.5 9489.5 9490.5 9490.0 9494.0 9493.5 9494.5 9494.5 9499.5 9499.5 9500.5 9500.0 9501.0 9500.5 9501.5 9501.5 9504.5 9504.5 9505.5 9505.0 9510.5 9510.0 9514.0 9514.0 9518.0 9518.0 9519.0 9518.5 9523.5 9562.5 9562.0 9568.0 9570.0 9574.5 (MEASURED DEPTH) EQUIVALENT UNSHIFTED DEPTH SGMA 9428.0 9438.5 9447.0 9447.5 9448.5 9476.0 9476.5 9483.0 9483.5 9485.0 9488.0 9489.0 9518.0 9518.5 9523.0 9567.0 9569.0 9573.0 958~.5 9588.0 9596.5 9610.0 9601.0 9603.5 9610.5 9619.0 9620.0 9622.5 9623.0 9623.5 9635.0 9636.0 9657.0 9659.5 9663.5 9664.5 9674.0 9674.5 9675.5 9688.5 9689.0 9689.5 9690.0 9701.0 9702.0 9703.0 9703.5 9707.0 9721.5 9730.0 9732.5 9742.5 9743.5 9764.5 9765.5 9791.0 9791.5 9792.0 9800.0 9800.5 9802.0 9809.5 9810.0 9811.0 9816.5 9825.0 9825.5 9875.0 $ REMARKS: 9622.0 9634.0 9634.5 9674.0 9687.5 9688.0 9688.5 9699.5 9721.0 9798.0 9807.5 9808.0 9580.0 9588.0 9598.0 9610.0 9602.0 9604.5 9610.5 9619.0 9619.5 9622.0 9622.5 9656.0 9659.0 9663.0 9663.5 9673.0 9674.0 9688.0 9700.5 9702.0 9702.5 9706.5 9720.5 9729.0 9732.0 9742.0 9742.5 9763.5 9764.0 9789.5 9790.0 9790.5 9799.0 9800.0 9809.0 9815.0 9823.5 9824.5 9874.0 BORAX PASS 3 - 85 BBLS AWAY. ALL PDK CURVES WERE SHIFTED WITH SGMA. / ? ?MATCH4A. OUT / ??MATCH4B. OUT $ CN WN FN COUN STAT : BP EXPLORATION : N- 25 (33-7-11-13) : PRUDHOE BAY : NORTH SLOPE : ALASKA * FORMAT RECORD (TYPE# 64) ONE DEPTH PER FRAME Tape depth ID: F 15 Curves: Name Tool Code Samples Units API API API API Log Crv Crv Size Length Typ Typ Cls Mod 1 GRCH PDK 68 1 GAPI 2 BIF PDK 68 1 3 BKL PDK 68 1 CPS 4 BKS PDK 68 1 CPS 5 CSLS PDK 68 1 CU 6 LS PDK 68 1 CPS 7 MSD PDK 68 1 CU 8 RATO PDK 68 1 9 RBOR PDK 68 1 10 RICS PDK 68 1 11 RIN PDK 68 1 12 SGMA PDK 68 1 CU 13 SGMB PDK 68 1 CU 14 SS PDK 68 1 CPS 15 SGNT PDK 68 1 CU 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 60 4 00 201 24 1 4 00 201 24 1 4 00 201 24 1 4 00 201 24 1 4 00 201 24 1 4 00 201 24 1 4 00 201 24 1 4 00 201 24 1 4 00 201 24 1 4 00 201 24 1 4 00 201 24 1 4 00 201 24 1 4 00 201 24 1 00 201 24 1 00 201 24 1 * DATA RECORD (TYPE# 0) 966 BYTES * Total Data Records: 72 Tape File Start Depth = 9900.000000 Tape File End Depth = 9365.000000 Tape File Level Spacing = 0.500000 Tape File Depth Units = Feet **** FILE TRAILER **** LIS representation code decoding summary: Rep Code: 68 34274 datums Tape Subfile: 5 193 records... Minimum record length: 62 bytes Maximum record length: 966 bytes Tape Subfile 6 is type: LIS FILE HEADER FILE NUMBER: 5 EDITED CURVES Depth shifted and clipped curves for each pass in separate PASS NUMBER: 5 DEPTH INCREMENT: .5000 FILE SUMMARY PBU TOOL CODE GRCH PDK $ CURVE SHIFT DATA - PASS TO PASS BASELINE CURVE FOR SHIFTS PBU CURVE CODE GRCH PASS NUMBER: 1 START DEPTH STOP DEPTH 9404.0 9886.0 9416.0 9898.0 BASELINE DEPTH GRCH 9365.0 9427.5 9428.5 9428.0 9429.0 9429.0 9429.5 9439.5 9441.0 9442.0 9442.5 9449.5 9450.5 9453.0 9454.0 9457.0 9458.5 9459.5 9460.5 9461.5 9461.0 9462.5 9462.5 9463.0 9464.5 9477.5 9478.0 9483.5 9484.5 9485.0 9485.5 9488.5 9489.0 9494.0 9500.0 9505.5 9506.0 9506.5 9507.0 9509.0 9510.0 9510.5 9515.0 9516.0 9516.5 9517.5 9507.0 9508.0 9517.0 files. (MEASURED DEPTH) EQUIVALENT UNSHIFTED DEPTH SGMA 9365.0 9429.0 9439.5 9441.5 9450.0 9450.5 9457.0 9459.0 9460.0 9462.5 9483.5 9484.0 9484.5 9486.0 9489.0 9490.0 9495.0 9500.5 9506.0 9507.0 9510.0 9510.5 9511.5 9516.0 9516.5 9517.5 9518.5 9518.0 9518.5 9524.0 9527.5 9535.5 9540.5 9541.5 9554.0 9555.0 9561.0 9571.0 9576.0 9577.5 9580.5 9581.5 9583.5 9588.5 9597.5 9612.0 9612.5 9613.5 9616.5 9617.5 9621.0 9622.5 9632.0 9634.5 9635.0 9636.0 9637.0 9640.0 9650.0 9665.0 9665.5 9673.5 9674.0 9675.0 9688.5 9689.0 9689.5 9700.0 9701.0 9701.5 9703.0 9703.5 9713.0 9721.5 9722.5 9729.0 9732.5 9733.5 9734.5 9739.0 9743.0 9744.0 9763.0 9763.5 9772.5 9779.5 9780.0 9518.5 9524.5 9622.5 9632.0 9634.0 9635.0 9636.0 9636.5 9664.5 9665.5 9688.5 9689.0 9701.0 9722.0 9519.0 9528.0 9535.5 9540.5 9542.0 9554.5 9556.0 9561.0 9571.0 9575.5 9577.0 9579.5 9580.5 9582.5 9589.0 9600.0 9613.5 9614.0 9614.5 9617.5 9618.0 9621.5 9622.5 9640.0 9650.0 9673.5 9674.5 9675.5 9689.0 9700.0 9700.5 9702.5 9703.5 9713.0 9723.0 9729.5 9733.5 9734.5 9735.0 9739.5 9743.0 9744.0 9763.0 9763.5 9772.5 9779.0 9779.5 9781.0 9790.0 9790.5 9800.0 9803.0 9810.0 9810.5 9816.5 9820.5 9873.5 9874.0 9874.5 9900.0 $ REMARKS: 9799.0 9809.0 9809.5 9780.0 9789.0 9790.0 9799.5 9802.0 9809.5 9816.0 9820.0 9873.5 9874.0 9874.5 9900.0 SEAWATER FLUSH PASS - 90 BBLS SEAWATER AWAY. ALL PDK CURVES WERE SHIFTED WITH SGMA. CN WN FN COUN STAT / ? ?MATCH5A. OUT / ??MATCH5B. OUT $ : BP EXPLORATION : N- 25 (33-7-11-13) : PRUDHOE BAY : NORTH SLOPE : ALASKA * FORMAT RECORD (TYPE# 64) ONE DEPTH PER FRAME Tape depth ID: F 15 Curves: Name Tool Code Samples Units API API API API Log Crv Crv Size Length Typ Typ Cls Mod 1 GRCH PDK 68 1 GAPI 4 2 BIF PDK 68 1 4 3 BKL PDK 68 1 CPS 4 4 BKS PDK 68 1 CPS 4 5 CSLS PDK 68 1 CU 4 6 LS PDK 68 1 CPS 4 7 MSD PDK 68 1 CU 4 8 RATO PDK 68 1 4 9 RBOR PDK 68 1 4 10 RICS PDK 68 1 4 11 RIN PDK 68 1 4 12 SGMA PDK 68 1 CU 4 13 SGMB PDK 68 1 CU 4 14 SS PDK 68 1 CPS 4 15 SGNT PDK 68 1 CU 4 4 00 201 24 1 4 00 201 24 1 4 00 201 24 1 4 00 201 24 1 4 00 201 24 1 4 00 201 24 1 4 00 201 24 1 4 00 201 24 1 4 00 201 24 1 4 00 201 24 1 4 00 201 24 1 4 00 201 24 1 4 00 201 24 1 4 00 201 24 1 4 00 201 24 1 60 * DATA RECORD (TYPE# 0) 966 BYTES * Total Data Records: 72 Tape File Start Depth = 9900.000000 Tape File End Depth = 9365.000000 Tape File Level Spacing = 0.500000 Tape File Depth Units = Feet **** FILE TRAILER **** LIS representation code decoding summary: Rep Code: 68 52482 datums Tape Subfile: 6 216 records... Minimum record length: 62 bytes Maximum record length: 966 bytes Tape Subfile 7 is type: LIS FILE HEADER FILE NUMBER: 6 RAW CURVES Curves and log header data for each run in separate files; raw background pass in last file. PASS NUMBER: 1 DEPTH INCREMENT: .2500 FILE SUMMARY VENDOR TOOL CODE START DEPTH GR 9368.5 PDK 9380.5 $ LOG HEADER DATA DATE LOGGED: SOFTWARE VERSION: TIME LOGGER ON BOTTOM: TD DRILLER (FT): TD LOGGER (FT): TOP LOG INTERVAL (FT): BOTTOM LOG INTERVAL (FT): LOGGING SPEED (FPHR): DEPTH CONTROL USED (YES/NO): TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE SBAR SINKER BAR PDK PDK- 100 $ STOP DEPTH 9871.0 9883.0 12-AUG-94 FSYS REV. J001 VER. 1.1 1943 12-AUG-94 9986.0 9972.0 9420.0 9900.0 1200.0 YES TOOL NUMBER 2725XA BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE(IN): DRILLER'S CASING DEPTH (FT): LOGGER'S CASING DEPTH (FT): .0OO 10065.0 .0 BOREHOLE CONDITIONS FLUID TYPE: FLUID DENSITY (LB/G): SURFACE TEMPERATURE (DEGF): BOTTOM HOLE TEMPERATURE (DEGF) : FLUID SALINITY (PPM): FLUID LEVEL (FT): FLUID RATE AT WELLHEAD (BPM): WATER CUTS (PCT): GAS/OIL RATIO: CHOKE (DEG): SEAWATER / BORAX .00 .0 220.0 0 .0 .000 .000 .000 .0 NEUTRON TOOL TOOL TYPE (EPITHERMAL OR THERMAL): MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): .00 .000 BLUELINE COUNT RATE NORMALIZATION IN OIL ZONE TOP NORMALIZING WINDOW (FT): BASE NORMALIZING WINDOW (FT): .0 .0 BLUELINE COUNT RATE SCALES SET BY FIELD ENGINEER FAR COUNT RATE LOW SCALE (CPS): 0 FAR COUNT RATE HIGH SCALE (CPS): 6000 NEAR COUNT RATE LOW SCALE (CPS): 0 NEAR COUNT RATE HIGH SCALE (CPS) : 97000 TOOL STANDOFF (IN): .0 REMARKS: FLUID PACKED PASS - 150 BBLS SEAWATER AWAY PRIOR TO LOGGING. $ CN WN FN COUN STAT : BP EXPLORATION : N - 25 (33-7-11-13) : PRUDHOE BAY : NORTH SLOPE : ALASKA * FORMAT RECORD (TYPE# 64) ONE DEPTH PER FRAME Tape depth ID: F 22 Curves: Name Tool Code Samples Units API API API API Log Crv Crv Size Length Typ Typ Cls Mod 1 GR PDK 68 1 GAPI 4 2 BIF PDK 68 1 4 3 BKL PDK 68 1 CPS 4 4 BKS PDK 68 1 CPS 4 5 CCL PDK 68 1 4 6 CSLS PDK 68 1 CU 4 7 CSS PDK 68 1 CPS 4 8 ISS PDK 68 1 CPS 4 9 LS PDK 68 1 CPS 4 10 MON PDK 68 1 CPS 4 11 MSD PDK 68 1 CU 4 12 RATO PDK 68 1 4 13 RBOR PDK 68 1 4 14 RICS PDK 68 1 4 15 RIN PDK 68 1 4 16 SGMA PDK 68 1 CU 4 17 SGMB PDK 68 1 CU 4 18 SPD PDK 68 1 F/MN 4 19 SS PDK 68 1 CPS 4 20 TEN PDK 68 1 LB 4 21 SGNT PDK 68 1 CU 4 22 PHI PDK 68 1 PU-S 4 4 06 511 09 4 00 201 24 4 39 705 61 4 74 169 61 4 92 630 79 4 00 201 24 4 00 201 24 4 71 162 89 4 71 162 89 4 32 125 68 4 00 201 24 4 23 260 40 4 23 260 40 4 23 260 40 4 23 260 40 4 96 761 61 4 00 201 24 4 52 386 28 4 05 626 89 4 17 922 28 4 00 201 24 4 00 201 24 0 1 6 6 6 1 1 6 6 0 1 0 0 0 0 6 1 5 6 5 1 1 88 * DATA RECORD (TYPE# 0) 1018 BYTES * Total Data Records: 188 Tape File Start Depth = 9883.000000 Tape File End Depth = 9368.500000 Tape File Level Spacing = 0.250000 Tape File Depth Units = Feet **** FILE TRAILER **** LIS representation code decoding summary: Rep Code: 68 81632 datums Tape Subfile: 7 263 records... Minimum record length: 62 bytes Maximum record length: 1018 bytes Tape Subfile 8 is type: LIS FILE HEADER FILE NUMBER: 7 RAW CURVES Curves and log header data for each run in separate files; raw background pass in last file. PASS NUMBER: 2 DEPTH INCREMENT: .2500 FILE SUMMARY VENDOR TOOL CODE START DEPTH GR 9409.5 PDK 9421.5 $ LOG HEADER DATA DATE LOGGED: SOFTWARE VERSION: TIME LOGGER ON BOTTOM: TD DRILLER (FT): TD LOGGER (FT): TOP LOG INTERVAL (FT): BOTTOM LOG INTERVAL (FT) : LOGGING SPEED (FPHR): DEPTH CONTROL USED (YES/NO) : TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE SBAR SINKER BAR PDK PDK-100 $ BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE(IN): DRILLER'S CASING DEPTH (FT): LOGGER'S CASING DEPTH (FT): BOREHOLE CONDITIONS FLUID TYPE: FLUID DENSITY (LB/G): SURFACE TEMPERATURE (DEGF): BOTTOM HOLE TEMPERATURE (DEGF): FLUID SALINITY (PPM): FLUID LEVEL (FT): FLUID RATE AT WELLHEAD (BPM): WATER CUTS (PCT): GAS/OIL RATIO: CHOKE (DEG): NEUTRON TOOL TOOL TYPE (EPITHERMAL OR THERMAL): MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): STOP DEPTH 9888.0 9900.0 12-AUG-94 FSYS REV. J001 VER. 1.1 329 12-AUG-94 9986.0 9972.0 9420.0 9900.0 1200.0 YES TOOL NUMBER 2725XA .000 10065.0 .0 SEAWATER / BORAX .00 .0 220.0 0 .0 .000 .000 .000 .0 .00 .000 BLUELINE COUNT RATE NORMALIZATION IN OIL ZONE TOP NORMALIZING WINDOW (FT): BASE NORMALIZING WINDOW (FT): .0 .0 BLUELINE COUNT RATE SCALES SET BY FIELD ENGINEER FAR COUNT RATE LOW SCALE (CPS): 0 FAR COUNT RATE HIGH SCALE (CPS) : 6000 NEAR COUNT RATE LOW SCALE (CPS): 0 NEAR COUNT RATE HIGH SCALE (CPS) : 97000 TOOL STANDOFF (IN): .0 REMARKS. · BORAX PASS 1 - 20 BBLS AWAY. $ CN WN FN COUN STAT : BP EXPLORATION : N- 25 (33-7-11-13) : PRUDHOE BAY : NORTH SLOPE : ALASKA * FORMAT RECORD (TYPE# 64) ONE DEPTH PER FRAME Tape depth ID: F 21 Curves: Name Tool Code Samples Units 1 GR PDK 68 1 GAPI 2 BIF PDK 68 1 3 BKL PDK 68 1 CPS 4 BKS PDK 68 1 CPS 5 CCL PDK 68 1 6 CSLS PDK 68 1 CU 7 CSS PDK 68 1 CPS 8 ISS PDK 68 1 CPS 9 LS PDK 68 1 CPS 10 MON PDK 68 1 CPS 11 MSD PDK 68 1 CU 12 RATO PDK 68 1 13 RBOR PDK 68 1 14 RICS PDK 68 1 15 RIN PDK 68 1 16 SGMA PDK 68 1 CU 17 SGMB PDK 68 1 CU 18 SPD PDK 68 1 F/MN 19 SS PDK 68 1 CPS 20 TEN PDK 68 1 LB 21 SGNT PDK 68 1 CU API API API API Log Crv Crv Size Length Typ Typ Cls Mod 4 4 06 511 09 0 4 4 00 201 24 1 4 4 39 705 61 6 4 4 74 169 61 6 4 4 92 630 79 6 4 4 00 201 24 1 4 4 00 201 24 1 4 4 71 162 89 6 4 4 71 162 89 6 4 4 32 125 68 0 4 4 00 201 24 1 4 4 23 260 40 0 4 4 23 260 40 0 4 4 23 260 40 0 4 4 23 260 40 0 4 4 96 761 61 6 4 4 00 201 24 1 4 4 52 386 28 5 4 4 05 626 89 6 4 4 17 922 28 5 4 4 00 201 24 1 84 * DATA RECORD (TYPE# 0) Total Data Records: 179 974 BYTES * Tape File Start Depth = 9900.000000 Tape File End Depth = 9409.500000 Tape File Level Spacing = 0.250000 Tape File Depth Units = Feet **** FILE TRAILER **** LIS representation code decoding summary: Rep Code: 68 95669 datums Tape Subfile: 8 253 records... Minimum record length: 62 bytes Maximum record length: 974 bytes Tape Subfile 9 is type: LIS FILE HEADER FILE NUMBER: 8 RAW CURVES Curves and log header data for each run in separate files; raw background pass in last file. PASS NUMBER: 3 DEPTH INCREMENT: .2500 FILE SUMMARY VENDOR TOOL CODE START DEPTH GR 9406.5 PDK 9418.5 $ LOG HEADER DATA DATE LOGGED: SOFTWARE VERSION: TIME LOGGER ON BOTTOM: TD DRILLER (FT): TD LOGGER (FT): TOP LOG INTERVAL (FT): BOTTOM LOG INTERVAL (FT): LOGGING SPEED (FPHR): DEPTH CONTROL USED (YES/NO): TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE SBAR SINKER BAR PDK PDK- 100 $ STOP DEPTH 9888.0 9900.0 12-AUG-94 FSYS REV. J001 VER. 1.1 301 12-AUG-94 9986.0 9972.0 9420.0 9900.0 1200.0 YES TOOL NUMBER 2725XA BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE(IN): DRILLER'S CASING DEPTH (FT): LOGGER'S CASING DEPTH (FT): .000 10065.0 .0 BOREHOLE CONDITIONS FLUID TYPE: FLUID DENSITY (LB/G): SURFACE TEMPERATURE (DEGF): BOTTOM HOLE TEMPERATURE (DEGF): FLUID SALINITY (PPM): FLUID LEVEL (FT): FLUID RATE AT WELLHEAD (BPM): WATER CUTS (PCT): GAS/OIL RATIO: CHOKE (DEG): SEAWATER / BORAX .00 .0 220.0 0 .0 .000 .000 .000 .0 NEUTRON TOOL TOOL TYPE (EPITHERMAL OR THERMAL): MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): .00 .000 BLUELINE COUNT RATE NORMALIZATION IN OIL ZONE TOP NORMALIZING WINDOW (FT): BASE NORMALIZING WINDOW (FT): .0 .0 BLUELINE COUNT RATE SCALES SET BY FIELD ENGINEER FAR COUNT RATE LOW SCALE (CPS) : 0 FAR COUNT RATE HIGH SCALE (CPS): 6000 NEAR COUNT RATE LOW SCALE (CPS) : 0 NEAR COUNT RATE HIGH SCALE (CPS) : 97000 TOOL STANDOFF (IN): .0 REMARKS: BORAX PASS 2 - 50 BBLS AWAY. $ CN WN FN COUN STAT : BP EXPLORATION : N - 25 (33-7-11-13) : PRUDHOE BAY : NORTH SLOPE : ALASKA * FORMAT RECORD (TYPE# 64) ONE DEPTH PER FRAME Tape depth ID: F 21 Curves: Name Tool Code Samples Units API API API API Log Crv Crv Size Length Typ Typ Cls Mod 1 GR PDK 68 1 GAPI 4 2 BIF PDK 68 1 4 3 BKL PDK 68 1 CPS 4 4 BKS PDK 68 1 CPS 4 5 CCL PDK 68 1 4 6 CSLS PDK 68 1 CU 4 7 CSS PDK 68 1 CPS 4 8 ISS PDK 68 1 CPS 4 9 LS PDK 68 1 CPS 4 10 MON PDK 68 1 CPS 4 11 MSD PDK 68 1 CU 4 12 RATO PDK 68 1 4 13 RBOR PDK 68 1 4 14 RICS PDK 68 1 4 15 RIN PDK 68 1 4 16 SGMA PDK 68 1 CU 4 17 SGMB PDK 68 1 CU 4 18 SPD PDK 68 1 F/MN 4 19 SS PDK 68 1 CPS 4 20 TEN PDK 68 1 LB 4 21 SGNT PDK 68 1 CU 4 4 06 511 09 0 4 00 201 24 1 4 39 705 61 6 4 74 169 61 6 4 92 630 79 6 4 00 201 24 1 4 00 201 24 1 4 71 162 89 6 4 71 162 89 6 4 32 125 68 0 4 00 201 24 1 4 23 260 40 0 4 23 260 40 0 4 23 260 40 0 4 23 260 40 0 4 96 761 61 6 4 00 201 24 1 4 52 386 28 5 4 05 626 89 6 4 17 922 28 5 4 00 201 24 1 84 * DATA RECORD (TYPE# 0) 974 BYTES * Total Data Records: 180 Tape File Start Depth = 9900.000000 Tape F~le End Depth = 9406.500000 Tape File Level Spacing = 0.250000 Tape File Depth Units = Feet **** FILE TRAILER **** LIS representation code decoding summary: Rep Code: 68 125083 datums Tape Subfile: 9 254 records... Minimum record length: 62 bytes Maximum record length: 974 bytes Tape Subfile 10 is type: LIS FILE HEADER FILE NUMBER: 9 RAW CURVES Curves and log header data for each run in separate files; raw background pass in last file. PASS NUMBER: 4 DEPTH INCREMENT: .2500 FILE SUMMARY VENDOR TOOL CODE START DEPTH GR 9403.0 PDK 9415.0 $ LOG HEADER DATA DATE LOGGED: SOFTWARE VERSION: TIME LOGGER ON BOTTOM: TD DRILLER (FT): TD LOGGER (FT): TOP LOG INTERVAL (FT): BOTTOM LOG INTERVAL (FT): LOGGING SPEED (FPHR): DEPTH CONTROL USED (YES/NO): STOP DEPTH 9888.0 9900.0 12-AUG-94 FSYS REV. J001 VER. 1.1 1143 12-AUG-94 9986.0 9972.0 9420.0 9900.0 1200.0 YES TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE SBAR SINKER BAR PDK PDK- 100 $ TOOL NUMBER 2725XA BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE(IN): DRILLER'S CASING DEPTH (FT): LOGGER'S CASING DEPTH (FT): .000 10065.0 .0 BOREHOLE CONDITIONS FLUID TYPE: FLUID DENSITY (LB/G): SURFACE TEMPERATURE (DEGF): BOTTOM HOLE TEMPERATURE (DEGF): FLUID SALINITY (PPM): FLUID LEVEL (FT): FLUID RATE AT WELLHEAD (BPM): WATER CUTS (PCT): GAS/OIL RATIO: CHOKE (DEG): SEAWATER / BORAX .00 .0 220.0 0 .0 .000 .000 .000 .0 NEUTRON TOOL TOOL TYPE (EPITHERMAL OR THERMAL): MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): .00 .000 BLUELINE COUNT RATE NORMALIZATION IN OIL ZONE TOP NORMALIZING WINDOW (FT): BASE NORMALIZING WINDOW (FT): .0 .0 BLUELINE COUNT RATE SCALES SET BY FIELD ENGINEER FAR COUNT RATE LOW SCALE (CPS) : 0 FAR COUNT RATE HIGH SCALE (CPS): 6000 NEAR COUNT RATE LOW SCALE (CPS): 0 NEAR COUNT RATE HIGH SCALE (CPS): 97000 TOOL STANDOFF (IN): .0 REMARKS: BORAX PASS 3 - 85 BBLS AWAY. $ CN WN FN COUN STAT : BP EXPLORATION : N- 25 (33-7-11-13) : PRUDHOE BAY : NORTH SLOPE : ALASKA * FORMAT RECORD (TYPE# 64) ONE DEPTH PER FRAME Tape depth ID: F 21 Curves: Name Tool Code Samples Units API API API API Log Crv Crv Size Length Typ Typ Cls Mod 1 GR PDK 68 1 GAPI 4 2 BIF PDK 68 1 4 3 BKL PDK 68 1 CPS 4 4 BKS PDK 68 1 CPS 4 5 CCL PDK 68 1 4 6 CSLS PDK 68 1 CU 4 7 CSS PDK 68 1 CPS 4 8 ISS PDK 68 1 CPS 4 9 LS PDK 68 1 CPS 4 10 MON PDK 68 1 CPS 4 11 MSD PDK 68 1 CU 4 12 RATO PDK 68 1 4 13 RBOR PDK 68 1 4 14 RICS PDK 68 1 4 15 RIN PDK 68 1 4 16 SGMA PDK 68 1 CU 4 17 SGMB PDK 68 1 CU 4 18 SPD PDK 68 1 F/MN 4 19 SS PDK 68 1 CPS 4 20 TEN PDK 68 1 LB 4 21 SGNT PDK 68 1 CU 4 4 06 511 09 0 4 00 201 24 1 4 39 705 61 6 4 74 169 61 6 4 92 630 79 6 4 00 201 24 1 4 00 201 24 1 4 71 162 89 6 4 71 162 89 6 4 32 125 68 0 4 00 201 24 1 4 23 260 40 0 4 23 260 40 0 4 23 260 40 0 4 23 260 40 0 4 96 761 61 6 4 00 201 24 1 4 52 386 28 5 4 05 626 89 6 4 17 922 28 5 4 00 201 24 1 84 * DATA RECORD (TYPE# 0) 974 BYTES * Total Data Records: 181 Tape File Start Depth = 9900.000000 Tape Fi~e End Depth = 9403.000000 Tape File Level Spacing = 0.250000 Tape File Depth Units = Feet **** FILE TRAILER **** LIS representation code decoding summary: Rep Code: 68 139428 datums Tape Subfile: 10 255 records... Minimum record length: 62 bytes Maximum record length: 974 bytes Tape Subfile 11 is type: LIS FILE HEADER FILE NUMBER: 10 RAW CURVES Curves and log header data for each run in separate files; raw background pass in last file. PASS NUMBER: 5 DEPTH INCREMENT: .2500 FILE SUMMARY VENDOR TOOL CODE START DEPTH GR 9403.0 PDK 9415.0 $ LOG HEADER DATA DATE LOGGED: SOFTWARE VERSION: TIME LOGGER ON BOTTOM: TD DRILLER (FT): TD LOGGER (FT): TOP LOG INTERVAL (FT): BOTTOM LOG INTERVAL (FT): LOGGING SPEED (FPHR): DEPTH CONTROL USED (YES/NO): STOP DEPTH 9888.0 9900.0 12-AUG-94 FSYS REV. J001 VER. 1.1 750 12-AUG-94 9986.0 9972.0 9420.0 9900.0 1200.0 YES TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE SBAR SINKER BAR PDK PDK-100 $ TOOL NUMBER 2725XA BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE(IN): DRILLER'S CASING DEPTH (FT): LOGGER'S CASING DEPTH (FT): .000 10065.0 .0 BOREHOLE CONDITIONS FLUID TYPE: FLUID DENSITY (LB/G): SURFACE TEMPERATURE (DEGF): BOTTOM HOLE TEMPERATURE (DEGF): FLUID SALINITY (PPM): FLUID LEVEL (FT): FLUID RATE AT WELLHEAD (BPM): WATER CUTS (PCT): GAS/OIL RATIO: CHOKE (DEG): SEAWATER / BORAX .00 .0 220.0 0 .0 .000 .000 .000 .0 NEUTRON TOOL TOOL TYPE (EPITHERMAL OR THERMAL): MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): .00 .000 BLUELINE COUNT RATE NORMALIZATION IN OIL ZONE TOP NORMALIZING WINDOW (FT): BASE NORMALIZING WINDOW (FT) : .0 .0 BLUELINE COUNT RATE SCALES SET BY FIELD ENGINEER FAR COUNT RATE LOW SCALE (CPS): 0 FAR COUNT RATE HIGH SCALE (CPS): 6000 NEAR COUNT RATE LOW SCALE (CPS): 0 NEAR COUNT RATE HIGH SCALE (CPS): 97000 TOOL STANDOFF (IN): .0 REMARKS: SEAWATER FLUSH PASS - 90 BBLS SEAWATER AWAY. $ CN WN FN COUN STAT : BP EXPLORATION : N- 25 (33-7-11-13) : PRUDHOE BAY : NORTH SLOPE : ALASKA * FORMAT RECORD (TYPE# 64) ONE DEPTH PER FRAME Tape depth ID: F 21 Curves: Name Tool Code Samples Units API API API API Log Crv Crv Size Length Typ Typ Cls Mod 1 GR PDK 68 1 GAPI 4 2 BIF PDK 68 1 4 3 BKL PDK 68 1 CPS 4 4 BKS PDK 68 1 CPS 4 5 CCL PDK 68 1 4 6 CSLS PDK 68 1 CU 4 7 CSS PDK 68 1 CPS 4 8 ISS PDK 68 1 CPS 4 9 LS PDK 68 1 CPS 4 10 MON PDK 68 1 CPS 4 11 MSD PDK 68 1 CU 4 12 RATO PDK 68 1 4 13 RBOR PDK 68 1 4 14 RICS PDK 68 1 4 15 RIN PDK 68 1 4 16 SGMA PDK 68 1 CU 4 17 SGMB PDK 68 1 CU 4 18 SPD PDK 68 1 F/MN 4 19 SS PDK 68 1 CPS 4 20 TEN PDK 68 1 LB 4 21 SGNT PDK 68 1 CU 4 4 06 511 09 4 00 201 24 4 39 705 61 4 74 169 61 4 92 630 79 4 00 201 24 4 00 201 24 4 71 162 89 4 71 162 89 4 32 125 68 4 00 201 24 4 23 260 40 4 23 260 40 4 23 260 40 4 23 260 40 4 96 761 61 4 00 201 24 4 52 386 28 4 05 626 89 4 17 922 28 4 00 201 24 0 1 6 6 6 1 1 6 6 0 1 0 0 0 0 6 1 5. 6 5 1 84 * DATA RECORD (TYPE# 0) Total Data Records: 181 974 BYTES * Tape File Start Depth = 9900.000000 Tape Ffle End Depth = 9403.000000 Tape File Level Spacing = 0.250000 Tape File Depth Units = Feet **** FILE TRAILER **** LIS representation code decoding summary: Rep Code: 68 168842 datums Tape Subfile: 11 255 records... Minimum record length: 62 bytes Maximum record length: 974 bytes Tape Subfile 12 is type: LIS 94/ 8/17 01 **** REEL TRAILER **** 94/ 8/17 01 Tape Subfile: 12 2 records... Minimum record length: 132 bytes Maximum record length: 132 bytes End of execution: Wed 17 AUG 94 4:27p Elapsed execution time = 16.20 seconds. SYSTEM RETURN CODE = 0 N - 25 RECEIVED PRUDHOE BAY~ ~'~ ~ Oil & 6a$ Cons. Commission Anchorage 9428 Run 1- 07 - July - 1994 DIFLIAClCNIGR GR up to 8300' ~0068 WESTERN ATLAS Atlas Wireline Services I I PRUDHOE BAY UNIT OPEN HOLE WIRELINE LOGS WELL NAME: API NUMBER: OPERATOR: IX)GGING COMPANY: TAPE CREATION DATE: JOB DATA JOB NUMBER: LOGGING ENGINEER: OPERATOR WITNESS: SURFACE LOCATION SECTION: TOWNSHIP: RANGE: FNL: FSL: FEL: FWL: ELEVATION (FT FROM MSL 0) KELLY BUSHING: DERRICK FLOOR: GROUND LEVEL: WELL CASING RECORD 1ST STRING 2ND STRING 3RD STRING PRODUCTION STRING RUN 1 6238.00 J. DAHL SEE REMARKS 500292248100 BP EXPLORATION (ALASKA) INC. ATLAS WIRELINE SERVICES 13-JUL-94 OPEN HOLE RUN 2 RUN 3 8 llN 13E 887 4743 68.80 67.30 38.10 CASING DRILLERS BIT SIZE (IN) SIZE (IN) DEPTH (FT) 7.625 9423.0 6.750 10065.0 DIFL/AC/CN. CIRCULATION STOPPED AT 19: 00, 06-JUL-94. LOGS WITNESSED BY: B. GRABB & D. BUMGARNER. REPEAT SECTION LOGGED ONLY BELOW OIL-WATER CONTACT TO MINIMIZE LOGGING. ACOUSTIC CYCLE SKIPPING AT CASING SHOE. NEUTRON LOG PARAMETERS: SANDSTONE MATRIX CALIPER CORRECTION = 6.75" CHISM FILTERING ACTIVE NO CASING CORRECTIONS SALINLTY = 0.00 PPM. PER CLIENT'S REQUEST, BOREHOLE & TORNADO CHART CORREC- TIONS WERE APPLIED TO THE DIL DATA. THE DIL DATA WAS CORRECTED FOR BOREHOLE SIZE (6.75"). THE CORRECTED DATA WAS THEN USED IN THE ATLAS TORNADO CHART TO GET "RT" & "DI" CURVES. RT = TRUE FORMATION RESISTIVITY. DI = DEPTH OF INVASION. FILE NUMBER: 1 EDITED OPEN HOLE MAIN PASS All tool strings; depth shifted and clipped curves; cased hole data. DEPTH INCREMENT: FILE SUMMARY PBU TOOL CODE GR BCS DIL 2435 $ BASELINE CURVE FOR SHIFTS: CURVE SHIFT DATA .5000 START DEPTH STOP DEPTH 9428.0 10002.0 9428.0 10041.0 9428.0 10068.0 9428.0 10009.0 GR (MEASURED DEPTH) BASELINE DEPTH 9428.0 9436.5 9437.0 9441.0 9442.0 9442.5 9445.0 9448.0 9450.0 9450.5 9451.0 9452.0 9458.5 9462.0 9463.0 9464.0 9470.5 9471.0 9471.5 9473.5 9475.5 9481.5 9486.0 9488.5 9489.0 9492.0 9492.5 9495.0 9499.0 9499.5 9505.0 9512.0 9512.5 9514.5 9517.5 9519.5 9520.5 9521.5 9527.5 9529.5 all runs merged; no ......... EQUIVALENT UNSHIFTED DEPTH ......... LL8 ILM DT NPHI 9428.0 9436.0 9436.5 9436.5 9437.0 9440.5 9441.5 9471.0 9475.0 9481.5 9492.5 9512.5 9514.0 9529.0 9447.0 9449.0 9450.0 9451.0 9461.0 9462.0 9442.5 9442.5 9445.5 9452.0 9458.5 9463.5 9470.5 9471.5 9473.0 9475.5 9486.0 9488.0 9489.0 9492.5 9495.0 9499.0 9516.0 9518.0 9518.5 9526.5 9529.5 9475.0 9492.5 9500.0 9505.5 9512.0 9521.5 0'~96 0'5£96 0'£596 0'0596 0'6196 g'~T96 0'0T96 0'0096 O'L696 ~'~8~6 0'£8S6 g'Stg6 0'99~6 0'9~6 0'9996 S'0~6 0'86~6 0 'S~L6 0 '6IL6 0 'ZIL6 0 'g696 ~'L896 0'9896 5'9L96 0 '0L96 0'~596 0 '6996 ~ '0996 0 '8~96 g'~I96 0'9096 g '68~6 0'66~6 S'6gL6 ~'~6 O'~IL6 g'L696 ~'IL96 0'LC96 ~'CC96 0'~6~6 0'I6G6 g'89~6 0'I9~6 O'Z~6 0'8996 0'8~L6 S'LIL6 0'9696 ~'6996 0'0G96 0'0996 ~'I~96 0'TI96 0'£096 O'L696 ~'C9~6 g'gg~6 O'ggg6 g'L~g6 0'9£g6 0'I9L6 0'6£L6 O'~L6 ~'8~L6 g'9~L6 0'gEL6 ~'StL6 0'8IL6 O'£IL6 O'=IL6 0'6696 0'g696 g'9696 0'8896 0'9896 0'~L96 0'9L96 g'~L96 0'0L96 0'£g96 ~'E~96 0'0~96 g '6996 ~ '0996 ~'8£96 0 '~£96 0 '8E96 g 'T~96 0 '6t96 0'~t96 g'II96 g'6096 0'9096 g'0096 g'£6~6 0'L6~6 0'£696 0'E6~6 ~'68~6 ~ '~896 ~ ' £8~6 '~ ' 8Lg6 0'69~6 0'£996 0'~9~6 ~'~9~6 0'9gg6 0'£g~6 0'69~6 0 '9~6 0'9~6 ~ '0996 g'6£~6 ~'8£§6 ~ '££~6 0 '~£~6 0'6666 S'I866 0'I£66 S'5966 S'6966 0'9966 S'~966 S'9C66 0'£~66 0'SI66 S'6066 S'~686 S'L886 0'~886 0'9986 0'£586 S'5986 0'9186 0'9086 0'06L6 S'8666 0'~866 0'I£66 0'CS66 S'8966 0'£~66 S'9~66 0'~66 S'~I66 S'6066 S'9886 S'~886 S'6£86 S'~£86 S'8986 0'£586 S'6986 S'8086 S'~086 S'S6L6 0'16L6 0'L666 S'6866 G'8866 S'L866 S'5866 0'5866 S'8L66 S'LL66 S'£L66 S'9~66 S'S~66 0'0066 S'9686 S'£686 0'0686 0'L886 0'~L86 0'9~86 ~'~6L6 S'59L6 S'~9L6 0'~9L6 S'65L6 0'8666 S'6966 0'9¢66 S'9~66 0'¢~66 0'SI66 0'~066 0'5686 S'L886 0'6986 0'S086 0'56£6 0'6666 S'8666 0'0666 0'686~ S'8866 S'9866 S'S866 0'~866 O'6£66 S'8L66 S'~66 0'~£66 0'9966 S'~S66 0'0g66 S'6966 0'6966 0'9966 0'~966 0'LC66 S'8~66 S'L~66 0'L~66 S'~E66 0'~66 0'E~66 0'S~66 ~'6066 0'E066 ~'0066 0'S686 S'9686 S'E686 0'T686 0'8886 0'9886 S'~886 0'~886 ~'6~86 0'~L86 O'TL86 S'8986 S'9986 S'9586 0'6~86 0'S~86 0'9186 0'~86 0'6086 g'g086 0'g086 0'96L6 S'S6L6 S'06L6 S'68£6 0'£9£6 S '99£6 0'~9L6 S 'O9£6 0 06 68£ 0~ 0 06 68£ 0~ 9 90 ~99 /..9 pon slD ~ dAL qq.~ua~ azz. S AID A.~D Ic~f Ic~f Ic~f Ic~f s~uR saId~es apoD IOO~ a~eN :saa~nD ~I & :~I u~dap ade~ (99 SHcI/J~) QHODHH .T.~O~[ ~ YHSV/Y : adOqS H~HON : (~I-II-&-££) gE - N : (~HS~"T~) NOI.T.~HOqcIX.~ d~ : /aqo' 9HO.T. VH~ & ! &no- CHO,T,Y~ ~ / J~lO' ZHO~N& & / &no- IHO,T. YPt~. ~. / NnOD N& NM ND 0'60001 0'8900I 0'I900I 0'~000I HS~ HDHHH '8~q H~IM GHA&IHS HHHM SNH~ ~ 'CUTH~ 'dS 'HH~H 'SS~d NI~J~ ~o uol~aod HqOH NHdO 0'8E~6 ~ 0'8E96 g 0'8~96 g 0'8E96 g dO~ HDHHH 'ON SSVd 'ON N/1H g'I£00I 0'9100I 0'0000I 0'98001 0'09001 0'~g00I g'Ig00I 0'g~00I o'g~ooI 0'~00I 0'60001 0'6666 0'8666 HGOD ~OO~ HDH~OS Y~V~ ~DHHH 0 ' 9800I ~'Ig00I 0'~00I 0'9£00I 0'~£00I ~'9~00I 0'9~00I g'EZOOI 0'91001 0'0100I f'O000I 0'0000I g'6666 6. II~M DIL 68 1 7 ILD DIL 68 1 8 RT DIL 68 1 9 DI DIL 68 1 10 SP DIL 68 1 11 MTEM DIL 68 1 12 NPHI 2435 68 1 13 FUCT 2435 68 1 14 NUCT 2435 68 i * DATA RECORD (TYPES 0) Total Data Records: 83 OHHM 4 OHMM 4 OHMM 4 IN 4 MV 4 DEGF 4 PU-S 4 CPS 4 CPS 4 4 50 746 76 4 50 746 76 4 50 746 76 4 50 746 76 4 50 746 76 4 50 746 76 4 98 211 23 4 98 211 23 4 98 211 23 966 BYTES * mmmmmmm 1 1 1 1 1 1 1 1 1 Tape File Start Depth = 10086.000000 Tape File End Depth = 9428.000000 Tape File Level Spacing = 0.500000 Tape File Depth Units = Feet **** FILE TRAILER **** LIS representation code decoding summary: Rep Code: 68 19756 datums Tape Subfile: 2 366 records... Minimum record length: 62 bytes Maximum record length: 966 bytes Tape Subf~le 3 is type: LIS FILE HEADER FILE NUMBER: 2 EDITED CASED HOLE MAIN PASS Depth shifted and clipped curves for open hole logs run into casing. PASS NUMBER: 5 DEPTH INCREMENT: .5000 FILE SUMMARY PBU TOOL CODE START DEPTH STOP DEPTH GRCH 8300.0 9428.0 $ BASELINE CURVE FOR SHIFTS: CURVE SHIFT DATA (MEASURED DEPTH) ......... EQUIVALENT UNSHIFTED DEPTH ......... BASELINE DEPTH $ REMARKS: CASED HOLE MAIN PASS. CN WN FN COUN STAT : BP EXPLORATION (ALASKA) : N - 25 (33-7-11-13) : PRUDHOE BAY : NORTH SLOPE : ALASKA * FORMAT RECORD (TYPES 64) ONE DEPTH PER FRAME Tape depth ID: F 3 Curves: Name Tool Code Samples Units API API API API Log Crv Crv Size Length Typ Typ Cls Mod i GRCH GR 68 I GAPI 2 TEND GR 68 i LB 3 TENS GR 68 i LB 4 4 21 990 60 6 4 4 10 579 41 1 4 4 10 579 41 1 mmmmmmm * DATA RECORD (TYPE# 0) 1014 BYTES * Total Data Records: 36 Tape File Start Depth = 9428.000000 Tape File End Depth = 8299. 000000 Tape File Level Spacing = 0.500000 Tape File Depth Units = Feet **** FILE TRAILER **** LIS representation code decoding summary: Rep Code: 68 9 03 ? datums Tape Subfile: 3 63 records... Minimum record length: 62 bytes Maximum record length: 1014 bytes Tape Subfile 4 is type: LIS TOOL STRING NUMBER: PASS NUMBER: DEPTH INCREMENT: FILE SUMMARY FILE HEADER FILE NUMBER: 3 RAW OPEN HOLE MAIN PASS Curves and log header data for each run and tool string in separate files; Tool String $1 for Sadlerochit run presented first (primary depth control string used to depth shift the Sadlerochit interval) followed by files for other main pass tool strings per run. RUN NUMBER: 1 1 3 .2500 VENDOR TOOL CODE START DEPTH STOP DEPTH GR 9348.0 10010.0 AC 9348.0 10047.0 DIFL 9348.0 10076.0 2435 9348.0 10017.0 $ LOG HEADER DATA DATE LOGGED: SOFTWARE VERSION: TIME CIRCULATION ENDED: TIME LOGGER ON BOTTOM: TD DRILLER (FT): TD LOGGER (FT): TOP LOG INTERVAL (FT): BOTTOM LOG INTERVAL (FT): LOGGING SPEED (FPHR): 07-JUL-94 FSYS REV. J001 VER. 1.1 1900 06-JUL-94 4 07-JUL-94 10065.0 10071.0 9428.0 10068.0 1500.0 TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE CHT MIS TEMP GR CN PCM KNJT KNJT AC DIFL $ CABLEHEAD TENSION MASS ISOLATION SUB TEMPERATURE GAMMA RAY COMPENSATED NEUTRON PULSE CODE MODULATOR KNUCKLE JOINT KNUCKLE JOINT BHC ACOUSTILOG DUAL INDUCTION TOOL NUMBER 3974XA 3967XA 2806XA 1309XA 2435XA 3506XA 3923NA 3923NA 1603MA/1609EB 1503XA BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE(IN): DRILLER' S CASING DEPTH (FT): LOGGER' S CASING DEPTH (FT): 6.750 9423.0 9428.0 BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): ~3D V~SCOSIT¥ (~) .' MUD PH: FLUID LOSS (C3): MAXIMUM RECORDED TEMPERATURE (DEGF): LSND 8.90 41.0 9.1 5.2 175.0 · RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): MUD AT BOTTOM HOLE TEMPERATURE (BHT): MUD FILTRATE AT MT: MUD FILTRATE AT BHT: MUD CAKE AT MT: MUD CAKE AT BHT: NEUTRON TOOL TOOL TYPE (EPITHERMAL OR THERMAL): MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): TOOL STANDOFF (IN): REMARKS: MAIN PASS. $ CN WN FN COUN STAT : BP EXPLORATION (ALASKA). : N - 25 (33-7-11-13) : PRUDHOE BAY : NORTH SLOPE : ALASKA 1.710 .835 2.280 .000 2.090 .000 THERMAL SANDSTONE .00 6.750 1.5 82.0 175.0 73.0 .0 80.0 .0 * FORMAT RECORD (TYPES 64 ) ONE DEPTH PER FRAME Tape depth ID: F 2 0 Curves: Name Tool Code Samples Units API API API API Log Crv Crv Size Length Typ Typ Cls Mod 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 9_0 GR AC 68 1 GAPI AC AC 68 i US/F CHT AC 68 i LB TTEN AC 68 i LB SPD AC 68 1 F/MN RFOC DIFL 68 I OHMM RILM DIFL 68 i OHMM RILD DIFL 68 I OHMM RT DIFL 68 I OHMM DI DIFL 68 I IN SP DIFL 68 i MV TEMP DIFL 68 I DEGF CILD DIFL 68 i MMHO VILD DIFL 68 i MV VILM DIFL 68 I MV CNC 2435 68 I PU-S CNCF 2435 68 i PU-S CN 2435 68 i PU-L LSN 2435 68 i CPS ~N 2455 68 I CPS 4 4 06 969 49 6 4 4 48 852 89 1 4 4 95 558 30 1 4 4 95 558 30 1 4 4 61 094 30 1 4 4 27 515 24 6 4 4 06 213 78 0 4 4 04 903 06 0 4 4 04 903 06 0 4 4 06 213 78 0 4 4 53 419 67 0 4 4 40 467 34 0 4 4 34 704 23 6 4 4 04 522 10 6 4 4 04 522 10 6 4 4 98 211 23 1 4 4 98 211 23 1 4 4 52 326 75 5 4 4 84 023 70 1 4 4 83 368 34 1 8O * .DATA. RECORD (TYPE~ 0) Total Data Records: 249 1014 BYTES * Tape File Start Depth = 10086.000000 Tape File End Depth = 9342.000000 Tape File Level Spacing = 0.250000 Tape File Depth Units = Feet **** FILE TRAILER **** LIS representation code decoding summary: Rep Code: 68 82274 datums Tape Subfile: 4 330 records... Minimum record length: Maximum record length: 44 bytes 1014 bytes Tape Subfile 5 is type: LIS FILE HEADER FILE NUMBER: 4 RAW OPEN HOLE REPEAT PASSES Curves and log header data for each pass, tool string, and run in separate files. RUN NUMBER: TOOL STRING NUMBER: PASS NUMBER: DEPTH INCREMENT: FILE SUMMARY 1 1 4 .2500 VENDOR TOOL CODE START DEPTH GR 9353.0 AC 9353.0 DIFL 9353.0 2435 9353.0 $ LOG HEADER DATA DATE LOGGED: SOFTWARE VERSION: TIME CIRCULATION ENDED: TIME LOGGER ON BOTTOM: TD DRILLER (FT): TD LOGGER (FT): TOP LOG INTERVAL (FT): BOTTOM LOG INTERVAL (FT): LOGGING SPEED (FPHR): STOP DEPTH 9831.0 9868.0 9897.0 9838.0 TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE CHT MIS TEMP GR CN PCM KNJT KNJT AC DIFL $ CABLEHEAD TENSION MASS ISOLATION SUB TEMPERATURE GAMMA RAY COMPENSATED NEUTRON PULSE CODE MODULATOR KNUCKLE JOINT KNUCKLE JOINT BHC ACOUSTILOG DUAL INDUCTION BOREHOLE AND CASING DATA OPEN HOLE BIT SIZE(IN): DRILLER'S CASING DEPTH (FT): IX)GGER'S CASING DEPTH (FT): BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S): NUD PH: FLUID LOSS (C3): MAXIMUM RECORDED TEMPERATURE (DEGF): RESISTIVITY (OHMM) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): 07-JUL-94 FSYS REV. J001 VER. 1.1 1900 06-JUL-94 54 07-JUL-94 10065.0 10071.0 9428.0 10068.0 1500.0 TOOL NUMBER 3974XA 3967XA 2806XA 1309XA 2435XA 3506XA 3923NA 3923NA 1603MA/1609EB 1503XA 6.750 9423.0 9428.0 LSND 8.90 41.0 9.1 5.2 175.0 1.710 82.0 MUD AT BOTTOM HOLE TEMPERATURE (BHT): MUD FILTRATE AT MT: MUD FILTRATE AT BHT: MUD CAKE AT MT: MUD CAKE AT BHT: NEUTRON TOOL TOOL TYPE (EPITHERMAL OR THERMAL): MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): TOOL STANDOFF (IN): REMARKS: REPEAT PASS. $ CN WN FN COUN STAT : BP EXPLORATION (ALASKA) : N - 25 (33-7-11-13) : PRUDHOE BAY : NORTH SLOPE : ALASKA .835 2.280 .000 2.090 .000 THERMAL SANDSTONE .00 6.750 1.5 175.0 73.0 .0 80.0 .0 * FORMAT RECORD (TYPES 64 ) ONE DEPTH PER FRAME Tape depth ID: F 20 Curves: Name Tool Code Samples Units API API API API Log Crv Crv Size Length Typ Typ Cls Mod i GR AC 68 i GAPI 4 2 AC AC 68 1 US/F 4 3 CHT AC 68 i LB 4 4 TTEN AC 68 i LB 4 5 SPD AC 68 1 F/MN 4 6 RFOC DIFL 68 1 OHMM 4 7 RILM DIFL 68 1 OHMM 4 8 RILD DIFL 68 I OHMM 4 9 RT DIFL 68 1 OHMM 4 10 DI DIFL 68 I IN 4 11 SP DIFL 68 i MV 4 12 TEMP DIFL 68 I DEGF 4 13 CILD DIFL 68 i MMHO 4 14 VILD DIFL 68 i MV 4 15 VILMDIFL 68 i MV 4 16 CNC 2435 68 I PU-S 4 17 CNCF 2435 68 I PU-S 4 18 CN 2435 68 i PU-L 4 19 LSN 2435 68 i CPS 4 20 SSN 2435 68 i CPS 4 4 06 969 49 6 4 48 852 89 1 4 95 558 30 1 4 95 558 30 1 4 61 094 30 1 4 27 515 24 6 4 06 213 78 0 4 04 903 06 0 4 04 903 06 0 4 06 213 78 0 4 53 419 67 0 4 40 467 34 0 4 34 704 23 6 4 04 522 10 6 4 04 522 10 6 4 98 211 23 1 4 98 211 23 1 4 52 326 75 5. 4 84 023 70 1 4 83 368 34 i 8O * DATA RECORD (TYPES 0) 1014 BYTES * .Total Data Records: 187 Tape File Start Depth = 9907.000000 Tape File End Depth ~ 9347.000000 Tape File Level Spacing ~ 0.250000 Tape File Depth Units = Feet **** FILE TRAILER **** LIS representation code decoding summary: Rep Code: 68 56099 datums Tape Subfile: 5 266 records... Minimum record length: 44 bytes Maximum record length: 1014 bytes Tape Subf~le 6 is type: LIS FILE HEADER FILE NUMBER: 5 RAW CASED HOLE MAIN PASS Curves and log header data for open hole logs run into casing. PASS NUMBER.- 5 DEPTH INCREMENT.' .2500 FILE SUMMARY VENDOR TOOL CODE START DEPTH GR 8300.0 $ LOG HEADER DATA DATE LOGGED: SOFTWARE VERSION: TIME CIRCULATION ENDED: TIME LOGGER ON BOTTOM: TD DRILLER (FT): TD LOGGER (FT): TOP LOG INTERVAL (FT) BOTTOM LOG INTERVAL (FT) LOGGING SPEED (FPHR) TOOL STRING (TOP TO BOTTOM) VENDOR TOOL CODE TOOL TYPE C~ MIS TEMP GR CN PCM KNJT KN~ AC DIFL $ CABLEHEAD TENSION MASS ISOLATION SUB TEMPERATURE GAMMA RAY COMPENSATED NEUTRON PULSE CODE MODULATOR KNUCKLE JOINT KNUCKLE JOINT BHC ACOUSTILOG DUAL INDUCTION STOP DEPTH 8470.0 07-JUL-94 FSYS REV. J001 VER. 1.1 1900 06-JUL-94 129 07-JUL-94 10065.0 10071.0 9428.0 10068.0 3600.0 TOOL NUMBER 3974XA 3967XA 2806XA 1309XA 2435XA 3506XA 3923NA 3923NA 1603MA/1609EB 1503XA BOREHOLEAND CASING DATA OPEN HOLE BIT SIZE(IN): DRILLER'S CASING DEPTH (FT): LOGGER'S CASING DEPTH (FT): 6.750 9423.0 9428.0 BOREHOLE CONDITIONS MUD TYPE: MUD DENSITY (LB/G): MUD VISCOSITY (S): MUD PH: FLUID LOSS (C3): MAXIMUM RECORDED TEMPERATURE (DEGF): RESISTIVITY (OHM){) AT TEMPERATURE (DEGF) MUD AT MEASURED TEMPERATURE (MT): MUD AT BOTTOM HOLE TEMPERATURE (BHT): MUD FILTRATE AT MT: MUD FILTRATE AT BHT: MUD CAKE AT MT: MUD CAKE AT BHT: LSND 8.90 41.0 9.1 5.2 175.0 1.710 .835 2.280 .000 2.090 .000 82.0 175.0 73.0 .0 80.0 .0 NEUTRON TOOL TOOL TYPE (EPITHERMAL OR THERMAL): MATRIX: MATRIX DENSITY: HOLE CORRECTION (IN): TOOL STANDOFF (IN): REMARKS: CASED HOLE PASS. CN WN FN COUN STAT : BP EXPLORATION (ALASKA) : N- 25 (33-7-11-13) : PRUDHOE BAY : NORTH SLOPE : ALASKA THERMAL SANDSTONE .00 6.750 1.5 * FORMAT RECORD (TYPE# 64) ONE DEPTH PER FRAME Tape depth ID: F 4 Curves: Name Tool Code Samples Units API API API API Log Crv Crv Size Length Typ Typ Cls Mod I GR GR 68 2 CHT GR 68 3 TTEN GR 68 4 SPD GR 68 1 GAPI 1 LB 1 LB 1 F/MN 4 4 21 990 60 6 4 4 10 579 41 1 4 4 10 579 41 1 4 4 76 115 41 1 16 * DATA RECORD (TYPES 0) 1006 BYTES * Total Data Records: 100 Tape File Start Depth = 9547.000000 Tape File End Depth = 8299.000000 Tape File Level Spacing = 0.250000 Tape File Depth Units = Feet **** FILE TRAILER **** LIS representation code decoding summary: Rep Code: 68 107240 datums Tape Subfile: 6 172 records... Minimum record length: 62 bytes Maximum record length: 1006 bytes Tape Subf~le 7 is type: LIS 94/ 7/13 01 **** REEL TRAILER **** 94/ 7/14 01 Tape Subfile: 7 2 records... Minimum record length: 132 bytes Maximum record length: 132 bytes End of execution: Thu 14 JLY 94 $:29a Elapsed execution time = 10.55 seconds. SYSTEM RETURN CODE = 0
