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Home My WebLink About201-1467. Property Designation (Lease Number): 1. Operations Performed: 2. Operator Name: 3. Address: 4. Well Class Before Work:5. Permit to Drill Number: 6. API Number: 8. Well Name and Number: 9. Logs (List logs and submit electronic data per 20AAC25.071): 10. Field/Pool(s): Susp Well Insp Install Whipstock Mod Artificial Lift Perforate New Pool Perforate Plug Perforations Coiled Tubing Ops Other Stimulate Fracture Stimulate Alter Casing Pull Tubing Repair Well Other: Change Approved Program Operations shutdown 11. Present Well Condition Summary: Casing Length Size MD TVD Burst Collapse Exploratory Stratigraphic Development Service 14. Attachments (required per 20 AAC 25.070, 25.071, & 25.283) 16. Well Status after work: 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. OIL GAS WINJ WAG GINJ WDSPL GSTOR Suspended SPLUG Authorized Name and Digital Signature with Date: Authorized Title: Contact Name: Contact Email: Contact Phone: PBU 15-41B Hilcorp North Slope, LLC 3800 Centerpoint Dr, Suite 1400, Anchorage, AK 99503 201-146 50-029-22492-02-00 12777 Conductor Surface Intermediate Liner Liner 8800 80 3925 10406 425 2512 10187 20" 9-5/8" 7" 5" 2-3/8" 8029 36 - 116 39 - 3964 32 - 10438 10270 - 10695 10265 - 12777 36 - 116 39 - 3558 32 - 8276 8111 - 8529 8106 - 8800 none 470 4760 5410 7250 11780 10098 , 10312 1490 6870 7240 8290 11200 10137 - 12720 3-1/2" 9.2# 13Cr80 30 - 10281 7980 - 8798 Structural 4-1/2" Baker S-3 , 10120 , 7963 No SSSV 10120 , 10210 7963 , 8052 Bo York Operations Manager Jerry Lau Jerry.Lau@hilcorp.com 907-564-5280 PRUDHOE BAY, PRUDHOE OIL / PUT RIVER OIL Total Depth Effective Depth measured true vertical feet feet feet feet measured true vertical measured measured feet feet feet feet measured true vertical Plugs Junk Packer Measured depth True Vertical depth feet feet Perforation depth Tubing (size, grade, measured and true vertical depth) Packers and SSSV (type, measured and true vertical depth) 12. Stimulation or cement squeeze summary: Intervals treated (measured): Treatment descriptions including volumes used and final pressure: 13a.Representative Daily Average Production or Injection Data Oil -Bbl Gas-Mcf Water -Bbl Casing Pressure Tubing Pressure Prior to well operation: Subsequent to operation: 15. Well Class after work: Exploratory Development Service StratigraphicDaily Report of Well Operations Copies of Logs and Surveys Run Electronic Fracture Stimulation Data Sundry Number or N/A if C.O. Exempt: ADL 0028306 30 - 8122 48 0 5865 0 2 0 0 0 251 0 N/A 13b. Pools active after work:PUT RIVER OIL 4-1/2" Baker SABL-3 , 10210 , 8052 STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS Sr Pet Eng: Sr Pet Geo: Form 10-404 Revised 10/2022 Submit in PDF format to aogcc.permitting@alaska.gov Sr Res Eng: Due Within 30 days of Operations Digitally signed by Bo York (1248) DN: cn=Bo York (1248) Date: 2024.02.19 19:48:21 - 09'00' Bo York (1248) By Grace Christianson at 1:50 pm, Feb 20, 2024 DSR-2/21/24 RBDMS JSB 022924 WCB 2024-06-25 ACTIVITYDATE SUMMARY 5/5/2023 TFS Unit 4 CMIT- TxIA, max applied pressure 3000 PSI, CMIT-TxIA ***PASSED*** to 2896/2882 psi. Pumped 5.4 bbls crude to Reach Max applied pressure of 3000 psi. 1st 15 min TxIA lost 90/91 psi. 2nd 15 min TxIA lost 24/27 psi. total loss of 114/118 psi Tag hung on MV & IAC. FWHP= 1254/1250/300 5/11/2023 ***WELL S/I ON ARRIVAL*** RAN 3' x 1-3/4" STEM, 2.80" G-RING, DRIFT FREELY & S/D ON PX-PRONG @ 10,095' SLM, PULLED PX-PRONG FROM 10,098' MD ***WSR CONT ON 5-12-23*** 5/12/2023 ***WSR CONT FROM 5-11-23*** PULLED 2.813" PX-PLUG BODY FROM 10,098' MD DRIFTED w/ 2.71" x 55" WRP DRIFT, DRIFTED FREELY TO 10,270' SLM, ***JOB COMPLETE, WELL LEFT S/I*** 5/21/2023 ***WELL S/I ON ARRIVAL*** PRESSURE TEST PCE 200#LP-3,000#HP RIH W/ 1-7/16 CHD (1" FN), 2 X 1-11/16" WB, 1 X 2" WB, 2-1/8" CCL, LONG STROKE SETTING TOOL, NS 350-275 COMPOSITE PLUG (2.725" MAX OD, 24' OAL) ME SET DEPTH=10,208', CCL OFFSET=9.1', CCL STOP DEPTH=10,198.9' SET PLUG W/ GOOD ELECTRICAL INDICATION & 190# WEIGHT LOSS RIH W/ 1-7/16'' CHD (1" FN), 2" WB, 2-1/8" CCL, 30' X 2.5" DUMP BAILER (LOADED W/ 5 GAL 17 PPG NEO CEM, 2.5" MAX OD, 39' OAL) DUMP A TOTAL OF 10 GAL OF 17 PPG CEMENT ATOP CBP (EST TOC @ 10,187') INSTALL & PT TREECAP ***WELL LEFT S/I*** 5/25/2023 T/I/O= 952/1058/313 Temp= S/I (TFS Unit 4 and 3 Conduct Injectivity/Step Rate Test) Pumped 3 bbls of 60/40 followed by 55 bbls of KCL down TBG for Load. Further Pumped 124 bbls of KCL down TBG for Injectivity/Step rate test. See TFS Unit 3 Awgers report for total Injection rates and Pressure. Freeze Protected TBG with 3 bbls of 60/40 followed by 39 bbls of Crude. Freeze protected FL with 2 bbls of crude followed by 6 bbls of Crude. Pressured FL to 1000 psi per DSO. Tag hung and tag given to DSO. Final WHPS 2300/1841/323 5/29/2023 T/I/O = 410/830/330. Temp = SI. T FL (DSO req). No AL. T FL @ 2100' (19 bbls). SV, WV = C. SSV, MV = O. IA, OA = OTG. 12:30 9/17/2023 T/I/O = 1010/1010/320. Temp = SI. T FL (E-line request). No AL. T FL @ surface. SV, WV, SSV = C. MV = O. IA & OA = OTG. 18:00 9/17/2023 ***WELL S/I UPON ARRIVAL*** MIRU HES SHUT DOWN DUE TO WIND RDMO HES ***WELL S/I UPON DEPARTURE*** Daily Report of Well Operations PBU 15-41B Daily Report of Well Operations PBU 15-41B 9/18/2023 ***WELL S/I UPON ARRIVAL*** MIRU HES PT PCE 300PSI LOW 3000PSI HIGH CORRELATE TO PDS JEWELRY LOG DATED 2-MAY-03 PERFERATED INTERVAL 10137'-10167' WITH 2.5" 3SPF 120PHASE HSC W/ GEO REFRAX CHARGES RDMO HES ***WELL S/I UPON DEPARTURE*** 9/28/2023 ***WELL S/I ON ARRIVAL*** RAN 4 1/2" BRUSH, AND 2.80" GAUGE RING, BRUSH X NIPPLE @ 10,087' SLM (10,098' MD). TAG CEMENT @ 10,175' SLM (10,087' MD) DRIFTED 20' x 2.74" DUMMY WHIPSTOCK, DRIFT CLEANLY TO TOC @ 10,176' SLM LOGGED HES CALIPER FROM 10,170' SLM, LOG TO SURFACE (good data) ATTEMPTED TO SET 2.81'' NIP-REDCER ( s/d high) RAN 3-1/2'' BLB, 2.85'' G-RING BRUSH TBG @ ~7744' SLM & TAG X-NIP @ 10,89' SLM RAN 3-1/2'' X-LINE, X-LOCK (sel) (2.813'') NIP- REDUCER (lih 30") (min id 1.78'') (cont on next day) ***WSR CONT ON 9-29-23*** 9/29/2023 ***WSR CONT FROM 9-28-23*** SET NIPPLE REDUCER IN X NIPPLE @ 10,098' MD. RAN CHECK SET, NOT SHEARED. PULLED NIPPLE REDUCER. RE-SET NIPPLE REDUCER IN X NIPPLE @ 10,098' MD (REDUCER HAS 1.781" R NIPPLE). RAN CHECK SET (GOOD SET). SET 1.781" RR PLUG IN NIPPLE REDUCER @ 10,098' MD. ***WELL S/I ON DEPARTURE*** 10/15/2023 T/I/O = SSV/1040/320. Temp = SI. IA FL (EL). 2" hardline rigged up on IA. IA FL @ surface. SV, WV, SSV = C. MV = O. IA, OA = OTG. 21:00 10/18/2023 ***WELL S/I UPON ARRIVAL*** MIRU HES MIRU REED MIRU T-BIRD SET DOWN AT 8581 WITH 500# OVER PULL MADE OTHER ATTEMPTS TOWN INSTRUCTED TO POOH AFTER DISCUSSION; RD AND HAVE SL CLEAN OUT WELL RDMO T-BIRD RDMO READ RDMO HES ***WELL S/I UPON DEPARTURE*** 10/18/2023 T/I/O= x/x/x TFS Unit 2 Assist ELine with LDL ****JOB CANCELED***** Well left in ELine control upon departure PERFERATED INTERVAL 10137'-10167' Daily Report of Well Operations PBU 15-41B 10/19/2023 ***WELL S/I ON ARRIVAL*** (Hot oil tbg wash) DRIFT W/ 2-7/8" BRUSH & 2.25" G. RING TO RESTRICTION 8,530' SLM (tools clean) RAN LOOSE 3-1/2" BRUSH & 2.50" SAMPLE BAILER TO 8,734' SLM (unable to get further, bailer full of asphaltines) RAN 10' x 2.25" DRIVE DOWN BAILER TO 10,098' MD (emtpy) DRIFT W/ 2.83" G. RING TO 10,098' MD (all clear) PULLED RK-DGLV AT ST# 4 (10,026' md) B&F TBG W/ 3-1/2" BRUSH & 2.83" G.RING TO 10,098' MD (LRS pumped 75 bbls hot diesel) RAN BOWSPRING CENT, 10' x 2.78" DMY GUN, BOWSPRING CENT, 10' x 2.78" DMY GUN TO 10,098' MD RAN DOUBLE BOWPRING CENT, 2.25" CENT & 20' x 1.75" BAILER TO 10,098' MD SET RK-DGLV AT ST# 4 (10,026' md) ***WELL S/I ON DEPARTURE*** 10/19/2023 T/I/O 1110/1025/323 Assist SL B&F Pumped 75 bbls 180*f Diesel down TBG/taking reuturns up IA and down 15-38 FL. Pumped 75 bbls cold diesel flush down TBG/taking rueturns to 15-38 FL. Pumped 3 bbls 60/40 methanol down hardline from IA on well 15-41 to 15-38 tree. RDMO SL in control of well upon LRS departure. IA and OA = OTG. 10/20/2023 (Standby for weather) TFS U3. Standby for weather *Job continues to 10-21-23* 10/20/2023 ***WELL S/I UPON ARRIVAL*** MIRU HES WIND READINGS 26MPH GUST AND 23 MPH SUSTAINED AT TIME OF RIG UP MIRU T-BIRD MIRU READ TAG PLUG AT 10098' PRESSURE UP IA TO 2000PSI STOP COUNTS ACROSS GLM AT 10026' UP PASS FROM 10098' TO 9122' STOP COUNTS ACROSS GLM AT 9143' NO LEAK DETECTED RECONFIGURE TO PUMP DOWN TUBING TO IA; LEAK DETECTED; CALCULATED TO BE 0.2BBL/M UP PASS FROM 10098 TO 9849' LOST COMMUNICATION WITH TOOLS; POOH LAY DOWN AND SECURE LOCATION; ***CONTINUED ON 21-OCT-2023 WSR*** 10/20/2023 T/I/O= 1150/1150/500 TFS Unit 3 Assist ELine as directed Pumped 1 bbl of 60/40 followed by 1 bbl Crude to pressure IA to 2000 psi for LDL Pumped 15 bbls of Crude down TBG for log and establish liquid leak rate of 7.5 GPM at 1960 psi. Pumped 1 bb of 60/40l to FP hardline to 15-38. Pumped 5 bbls of 60/40 to FP 15-41 FL and pressured up to 500 psi PO notified and well left in E-line control upon departure Daily Report of Well Operations PBU 15-41B 10/21/2023 ***CONTINUED FROM 20-OCT-23 WSR*** TROUBLESHOOT TOOLS REHEAD AND REPAIR CRANE CRANE NEEDS MORE EXPANSIVE REPAIRS RETURN IT TO SHOP ATTEMPT TO RIG UP NEXT DAY ***CONTINUED ON 22-OCT-23 WSR*** 10/21/2023 *Job continues from 10-21-23* (Weather Standby) TFS U3 10/21/2023 TFS Unit 3 assist E-line as directed ***Job postponed*** 10/22/2023 ***CONTINUED FROM 21-OCT-23 WSR*** MIRU CRANE MIRU READ MIRU T-BIRD PRESSURE TUBING TO 2000PSI UP PASS FROM 10098' TO 9050' LEAK DETECTED AT 9151' STOP COUNTS OVER LEAK INTERVAL RESTART UP PASS FROM 9240' TO SURFACE TOTAL CRUDE PUMPED WAS 152 BBL T-BIRD FREEZE PROTECT HARD LINE RDMO T-BIRD RDMO HES ***WELL SHUT IT UPON RIG DOWN*** CONTINUE ON 24-OCT-2023 WSR 10/22/2023 T/I/O=1000/1000/250 TFS Unit 3 Assist E-Line as directed. Pumped 152 bbls of crude down the TBG taking returns up the IA for an LDL. Pumped 1 bbls of 60/40 down the hardline to 15-38 to FP. Performed a man down Drill discussing what to do in the event our 3rd hand finds the operator and assistant on the floor of the well house. he did not come into the well and called emergancy services immidiatly. Well left in control of Eline upon departure 10/23/2023 ***WELL S/I ON ARRIVAL*** PULLED RR PLUG FROM NIPPLE REDUCER @ 10,098' MD. ***CONT ON 10/24/23 WSR*** 10/24/2023 ***CONT FROM 10/23/2023 WSR*** PULLED NIPPLE REDUCER @ 10,098' MD. ***WELL SHUT IN UPON DEPARTURE*** 11/11/2023 ***WELL S/I UPON ARRIVAL*** MIRU HES ***CONTINUED ON 12-NOV-23 WSR*** Daily Report of Well Operations PBU 15-41B 11/12/2023 ***WELL SHUT IN ON ARRIVAL*** (SET PATCH) MIRU HES E-LINE PT LOW 500 PSI HIGH 3500 PSI; CORRELATE TO READ LDL DATED 22OCT23 SET OWENS X-SPAN PERMANENT PATCH AT 9,139.0' TO 9,155.5'; CCL TO TOP MID ELEMENT = 10.4', CCL STOP AT 9128.6' GOOD INDICATION OF SET RDMO.HES E-LINE ***WELL SHUT IN ON DEPARTURE*** 11/24/2023 T/I/O = SSV/1040/330. Temp = SI. T FL (E-line request). AL disconnected in well house. Opened SSV to get T FL (1000 psi). T FL @ surface. SV, WV, SSV = C. MV = O. IA, OA = OTG. 17:30 11/25/2023 ***WELL S/I ON ARRIVAL*** (SET 1.80'' OD HEX PLUG IN 3.5 TBG 9.2# ) RIG UP YJ ELINE. PT PCE 300 PSI LOW /3000 PSI HIGH RIH W/CH/WB/ 1.69''-CCL/HEX SETTING TOOL/1.80'' HEX PLUG TO SET PLUG AT 10112' MD, CCL TI MID ELEMENT 15' CCL STOP DEPTH 10097' MD CCL LOG CORRELATED TO WELL SCHEMATIC DATED 11/20/2023 JOB COMPLETE ***WELL S/I ON DEPARTURE*** 11/26/2023 T/I/O= 0/1000/0 TFSUnit 3 Pumped 1 bbl of Crude to pressure TBG up to 3498 psi. TBG bled down to 155 psi to attempt pressuring up again, .6 bbls bled back to the truck. Pumped .6 bbls to pressure up TBG for and MIT-T at 3500 psi ****PASSED**** Reached test pressure on TBG at 3498 psi. First 15 minutes TBG lost 99 psi. Second 15 minutes TBG lost 28 psi. ****PASSED**** Bled 2 bbls of Crude to take TBG down to 0 psi. Tags hung and DSO notified upon departure. 12/22/2023 ***WELL S/I ON ARRIVAL*** HES 759 R/U ***CONT WSR ON 12/23/2023*** 12/23/2023 ***CONT WSR FROM 12/22/2023*** PULL 1.80" HEX PLUG @10,117' SLM ***WELL LEFT S/I ON DEPARTURE*** 1/15/2024 T/I/O = SSV/990/320. Temp = SI. Bleed IAP to 500 psi (eval TxIA). AL disconected. IA FL @ surface. Bled IAP to BT to 500 psi in 10 min (1.25 bbls). Monitored for 30 min. IAP increased 40 psi. Final WHPs = SSV/540/320. SV, WV, SSV = C. MV = O. IA, OA = OTG. 04:00 1/22/2024 OE / RES ENG: Agreed to cancel the final step to pump injectivity test with fullbore. We have collected enough data to Frac and will use a new AFE and Sundry at a later date. 1 Regg, James B (OGC) From:PB Wells Integrity <PBWellsIntegrity@hilcorp.com> Sent:Wednesday, January 10, 2024 5:01 PM To:Regg, James B (OGC) Cc:Wallace, Chris D (OGC); Bo York; Oliver Sternicki Subject:OPERABLE: Producer 15-41B (PTD #2011460) MIT-T Passed Mr. Regg, Producer 15‐41B (PTD #2011460) passed MIT‐T to 3371 psi post tubing patch on 11/26/23 and a previous CMIT‐TxIA passed on 05/05/23 to 2882 psi which confirms integrity of the primary and secondary well barriers. The tubing plug has been pulled and the well is now classified as OPERABLE. Please call with any questions or concerns. Ryan Holt Hilcorp Alaska LLC Field Well Integrity / Compliance Ryan.Holt@Hilcorp.com P: (907) 659‐5102 M: (907) 232‐1005 From: Oliver Sternicki <Oliver.Sternicki@hilcorp.com> Sent: Tuesday, June 13, 2023 2:20 PM To: Regg, James B (CED) <jim.regg@alaska.gov> Cc: chris.wallace@alaska.gov; Bo York <byork@hilcorp.com>; Oliver Sternicki <Oliver.Sternicki@hilcorp.com>; PB Wells Integrity <PBWellsIntegrity@hilcorp.com> Subject: NOT OPERABLE: Producer 15‐41B (PTD #2011460) TxIA Communication Mr. Regg, Producer 15‐41B (PTD #2011460) is a natural flow well with known TxIA communication. The well was placed online, under evaluation with permission from the AOGCC, to evaluate well economics to support repair of the TxIA comm. Evaluation has been completed and the well is currently shut in. The tentative plan is to repair the TxIA communication with a patch in the next month. IA repressurization will be managed by periodic bleed or a plug will be set to secure the well to keep the IA pressure below MOASP until the patch repair is executed. The well is now classified as NOT OPERABLE until the primary well barrier has been restored. Please call with any questions or concerns. Oliver Sternicki Hilcorp Alaska, Hilcorp North Slope LLC Well Integrity Supervisor Office: (907) 564 4891 Cell: (907) 350 0759 CAUTION: This email originated from outside the State of Alaska mail system. Do not click links or open attachments unless you recognize the sender and know the content is safe. 2 Oliver.Sternicki@hilcorp.com From: PB Wells Integrity <PBWellsIntegrity@hilcorp.com> Sent: Sunday, May 28, 2023 7:52 AM To: Regg, James B (CED) <jim.regg@alaska.gov> Cc: chris.wallace@alaska.gov; Oliver Sternicki <Oliver.Sternicki@hilcorp.com>; Bo York <byork@hilcorp.com> Subject: UNDER EVALUATION: Producer 15‐41B (PTD #2011460) TxIA Communication 30 day Economic Evaluation Mr. Regg, Producer 15‐41B (PTD #2011460) is a natural flow well with known TxIA communication. A CMIT‐TxIA passed to 2882 psi on 05/05/23 which confirms casing and packer integrity. After recent zonal isolation, AOGCC has approved production for up to 30 days to determine economics of a tubing repair (see attached). The well is classified as UNDER EVALUATION and can be put on production for up to 30 days. The well will be secured following the flowback so that the IA casing pressure will not exceed NOL. Please call with any questions or concerns. Ryan Holt Hilcorp Alaska LLC Field Well Integrity / Compliance Ryan.Holt@Hilcorp.com P: (907) 659‐5102 M: (907) 232‐1005 From: PB Wells Integrity <PBWellsIntegrity@hilcorp.com> Sent: Wednesday, October 5, 2022 5:55 AM To: Regg, James B (CED) <jim.regg@alaska.gov> Cc: chris.wallace@alaska.gov; Oliver Sternicki <Oliver.Sternicki@hilcorp.com>; Bo York <byork@hilcorp.com>; PB Wells Integrity <PBWellsIntegrity@hilcorp.com> Subject: NOT OPERABLE: Producer 15‐41B (PTD #2011460) MIT‐T failed Mr. Regg, Slickline set DGLVs on 09/26/22 but a subsequent TIFL failed. On 10/04/22 Slickline set a TTP, performed a passing CMIT‐ TxIA but a failing MIT‐T. The failed MIT‐T indicates a failure in the primary well barrier. The well is now classified as NOT OPERABLE and will remain secured with a TTP. Please respond with any questions. Andy Ogg Hilcorp Alaska LLC Field Well Integrity andrew.ogg@hilcorp.com P: (907) 659‐5102 M: (307)399‐3816 From: PB Wells Integrity <PBWellsIntegrity@hilcorp.com> Sent: Wednesday, September 28, 2022 1:02 PM 3 To: Regg, James B (CED) <jim.regg@alaska.gov> Cc: chris.wallace@alaska.gov; Oliver Sternicki <Oliver.Sternicki@hilcorp.com>; Bo York <byork@hilcorp.com>; PB Wells Integrity <PBWellsIntegrity@hilcorp.com> Subject: UNDER EVALUATION: Producer 15‐41B (PTD #2011460) TIFL Failed Mr. Regg, Producer 15‐41 (PTD #2011460) is currently Under Evaluation after it failed a diagnostic TIFL on 09/20/22. On 09/26/22 after Slickline set the DGLV, the well exceeded MOASP on the IA. A subsequent TIFL failed which verifies the excursion was sustained casing pressure. This email is to satisfy reporting requirements outlined in CO 492. Plan Forward: 1. Slickline: Set TTP/Perform MITs 2. Well Integrity: Additional diagnostics as needed Please respond with any questions. Andy Ogg Hilcorp Alaska LLC Field Well Integrity andrew.ogg@hilcorp.com P: (907) 659‐5102 M: (307)399‐3816 From: PB Wells Integrity Sent: Tuesday, September 20, 2022 3:33 PM To: Alaska JMS User <akimsuser@hilcorp.com>; Carrie Janowski <Carrie.Janowski@hilcorp.com>; PB EOC Specialists <PBEOCSpecialists@hilcorp.com>; PB Wells Optimization Engineers <PBWellsOptimizationEngineers@hilcorp.com>; PBE FS3 Drill Sites <FS3DrillsitesFS3Drillsites@hilcorp.com>; PBE FS3 Field Lead Operator <PBEFS3FieldLeadOperator@hilcorp.com>; PBE FS3 Foreman <PBEFS3Foreman@hilcorp.com>; Eric Dickerman <Eric.Dickerman@hilcorp.com> Cc: Bo York <byork@hilcorp.com>; Oliver Sternicki <Oliver.Sternicki@hilcorp.com>; John Condio ‐ (C) <John.Condio@hilcorp.com>; Kevin Brackett <Kevin.Brackett@hilcorp.com> Subject: UNDER EVALUATION: Producer 15‐41B (PTD #201146) TIFL Failed All, Producer 15‐41B (PTD #201146) was reported by operations with increasing IA pressure. Subsequent warm TIFL failed on 06/20/22 which verifies failure of one or more well barriers. At this time, the well is now classified as UNDER EVALUATION and on a 28 day clock to be resolved. Plan Forward: 1. Slickline: Set DGLV 2. DHD: Re‐TIFL Please call with any questions or concerns. Ryan Holt Hilcorp Alaska LLC Field Well Integrity / Compliance Ryan.Holt@Hilcorp.com CAUTION: This email originated from outside the State of Alaska mail system. Do not click links or open attachments unless you recognize the sender and know the content is safe. From:Rixse, Melvin G (OGC) To:Jerry Lau Cc:AOGCC Records (CED sponsored) Subject:20230526 1509 APPROVAL to Flow 30 Days 15-41B POP U/E PTD# 201-146 Date:Friday, May 26, 2023 3:12:53 PM Attachments:EXTERNAL RE DS 15-41B Western Put River Production Question (PTD#201-146).msg FW NOT OPERABLE Producer 15-41B (PTD #2011460) MIT-T failed.msg 15-41B.pdf Jerry, Hilcorp is approved to flow under evaluation for 30 days. Mel Rixse Senior Petroleum Engineer (PE) Alaska Oil and Gas Conservation Commission 907-793-1231 Office 907-297-8474 Cell CONFIDENTIALITY NOTICE: This e-mail message, including any attachments, contains information from the Alaska Oil and Gas Conservation Commission (AOGCC), State of Alaska and is for the sole use of the intended recipient(s). It may contain confidential and/or privileged information. The unauthorized review, use or disclosure of such information may violate state or federal law. If you are an unintended recipient of this e-mail, please delete it, without first saving or forwarding it, and, so that the AOGCC is aware of the mistake in sending it to you, contact Mel Rixse at (907-793-1231 ) or (Melvin.Rixse@alaska.gov). From: Jerry Lau <Jerry.Lau@hilcorp.com> Sent: Friday, May 26, 2023 12:06 PM To: Rixse, Melvin G (OGC) <melvin.rixse@alaska.gov> Cc: Oliver Sternicki <Oliver.Sternicki@hilcorp.com>; PB Wells Integrity <PBWellsIntegrity@hilcorp.com>; Ryan Holt <Ryan.Holt@hilcorp.com> Subject: 15-41B POP U/E PTD# 201-146 Mel, 15-41B is a potential Western Put River Producer. We recently isolated the lower zones (Ivishak and Lower/Central Put River) mechanically to target the western Put River solely – Refer to attached email addressed to Dave Roby where he signs off on the zonal isolation plan. The well has TxIA through a leaky GLV (washed out pocket with extended Freudenberg packing on GLV) and is only open to the Western Put perforations. The well recently passed a CMIT-TxIA to 3000 psi to verify casing/packer integrity. Next, the TTP was pulled to perform an injectivity test to evaluate if we want to repair the TBG, Frac, and produce the well. Modeling suggests that the Put River Western lobe should be able to produce 800+ bopd if the wellwork program is completed. At this point, we would like to flow under eval to gather production and sample data to determine economics help us decide on weather to continue with wellwork. Can the AOGCC grant us permission to do this? Schematic and original Not operable email attached Let me know if you have any questions. Thanks. Jerry Lau Hilcorp North Slope – Prudhoe Bay East FS3 Operations Engineer (DS 06,07,13,14,15) Cell: (907) 360-6233 Office: (907) 564-5280 The information contained in this email message is confidential and may be legally privileged and is intended only for the use of theindividual or entity named above. If you are not an intended recipient or if you have received this message in error, you are herebynotified that any dissemination, distribution, or copy of this email is strictly prohibited. If you have received this email in error, pleaseimmediately notify us by return email or telephone if the sender's phone number is listed above, then promptly and permanently deletethis message. While all reasonable care has been taken to avoid the transmission of viruses, it is the responsibility of the recipient to ensure that theonward transmission, opening, or use of this message and any attachments will not adversely affect its systems or data. No responsibilityis accepted by the company in this regard and the recipient should carry out such virus and other checks as it considers appropriate. TREE= 4-1/16"CM/5K WELLHEAD= FMC ACTUATOR= BAKER OKB. ELEV = 6625' BF. ELEV = 32.97' KOP = 1450' Max Angle = 94" 0 11580' Datum MD = WA Datum TVD = 8800' SS 10-3/4" CSG, 45.5#, L-80, D = 9.953" 1 39' 9-518" CSG, 47#, L-80, D = 8.681" I --i 3964' Minimum ID =.255'@ 10400' 2-3/8" POLAR CHOKE ASSY 15-41 B 13-1/2' TBG, 9.2#, FOX 13 -CR -80, ID = 2.992"10148' — SAFETY NOTES: DURING RIND THE 3-12" UNIQUE OVERSHOT WAS SPACED OUT TO SWALLOW 3- 12" TBG STUB @ 10170'. DEPTH DISCREPANCY DUE TO E -LINE VS RIG MEASUREMENT. 3-12" NORTHERN SOLUTIONS CBP (052123) 14 10208' — 3-12" TBG. 92#. L-80..0087 bnf. D = 2.992' 7' CSG, 280, LSO, D = 8276' 10438' PERFORATION SUMMARY FIEF LOG: SVS MCNL GR(COL ON 10/08/01 ANGLEAT TOP PERF: 11'@ 10137' Note: Refer to Production DB for historical perf data SIZE SPF INTERVAL Opn/Sgz DATE 2-12" 6 10137 - 10192 O 12/13/04 2-114" 6 10225 - 10260 O 11/04/04 1-11/16" 4 12040 - 12363 O 10/09/01 1-11116" 4 12401 - 12704 O 10109/01 1-11116" 4 12714 - 12720 O 10109/01 5" LNR, 15#, 13-0R30, ID = 4.408" 11150' SAFETY NOTES: WELL ANGLE > 700 @ 10970'& > 900 @ 11169'. NOTE NO SSSVN / LANDING NIP WERE RUN @ THE NORMAL +/- 2000' DEPTH. NOTE: DRIFT RESTRICTION THRU TOL, 1-11/16" LOGGING TOOLS WOULDN'T PASS 05/23/03 - CHROME LNR & TBG 101' 4-1/2" X 3-12" TBG XO, D = 2.992" u O Ur i " mur¢w DATE ST MD TVD DEV TYPE VLV LATCH PORT DATE 1 3595 3315 48 CA-FMHO DMY RK 0 10104/22 2 6764 5399 53 CA-FMHO DMY RK 0 1010422 3 9143 7047 30 CA-FMHO "DMY RK 0 032423 4 10026 7871 11 CA-FMHO DMY RK 0 05/11/06 'STA #3 = FREUDENBERG PACKING 10120' 1--17"X 4-12" BAKER S-3 PKR, D = 3.875" 101�—ICHEM Ct1T TBG STUB I12/23/00 10174' 3-1/2" UNIQUE OVERSHOT, D=3.625" 10187' TOC PLUG (052123) 10195' 3-12" X 4-12" XO, ID = 2.992' 10198' 7' X 4-12' BAKER SABL.3 PKR, D = 3.875' 10202' 4-12" X 342" XO, ID = 2.992" 10233' 3-12" OTIS X NIP. ID = 2.813" 10255' --� 3-12' PARKER SWN NP. D =2.750' 1 1 10269' 1--13-12"Tr WLEG 102830 —12.70"BKR DEPLOYMENT SLV, ID=2.250" 10318' 2-3/8' CBP (032323) 10400' 23/8" N.S. POLAR CHOKE w/.25' 5" SIDETRACK WINDOW ( 15-41B ) 10695' - 10705' ( OFF CML RAMP) 15-41 RK WELLBO RE -OT SH WN O WELLBORE NOT SHOWN ON THIS \ DIAGRAM 2-3/8" LNR, 4.7#, L-80, .0039 bpf, D = 1.995" I 12777' DATE REV BY COMMENTS DATE REV BY COMMENTS 11/12194 ORIGINAL COMPLETION 10/1922 JPK/JMD GLV C/O(1010422) 0810994 RWO 10/1922 CK/JMD SET PX PLUG (1010222) 0110491 RWO 04/1023 SS/JMD GLV C/O (03/24)23) 03105101 ABORTED SIDETRACK 04/1023 SS/JMD RESET PX PLUG & 10109101 CTD SIDETRACK 05/1523 SWS/JMD PULLED PX PLUG (05/1223) 0710621 CP/JMD RESET POLAR CHOKE (01 052223 RB/JMD SET CBP& CMT ON PLUG(052123) PRUDHOE BAY UNIT WELL: 15-41B PERMIT No '2011460 API No: 50-029-22492-02 SEC 22, T11 N. R14E. 1474' SNL & 4566' FEL Hilcorp North Slope, LLC From:Ryan Holt To:Jerry Lau Subject:FW: NOT OPERABLE: Producer 15-41B (PTD #2011460) MIT-T failed Date:Friday, May 26, 2023 11:51:57 AM Also for reference, this is the email chain we sent Jim on 15-41 making it under eval / not operable last year. Ryan Holt Hilcorp Alaska LLC Field Well Integrity / Compliance Ryan.Holt@Hilcorp.com P: (907) 659-5102 M: (907) 232-1005 From: PB Wells Integrity <PBWellsIntegrity@hilcorp.com> Sent: Wednesday, October 5, 2022 5:55 AM To: Regg, James B (CED) <jim.regg@alaska.gov> Cc: chris.wallace@alaska.gov; Oliver Sternicki <Oliver.Sternicki@hilcorp.com>; Bo York <byork@hilcorp.com>; PB Wells Integrity <PBWellsIntegrity@hilcorp.com> Subject: NOT OPERABLE: Producer 15-41B (PTD #2011460) MIT-T failed Mr. Regg, Slickline set DGLVs on 09/26/22 but a subsequent TIFL failed. On 10/04/22 Slickline set a TTP, performed a passing CMIT-TxIA but a failing MIT-T. The failed MIT-T indicates a failure in the primary well barrier. The well is now classified as NOT OPERABLE and will remain secured with a TTP. Please respond with any questions. Andy Ogg Hilcorp Alaska LLC Field Well Integrity andrew.ogg@hilcorp.com P: (907) 659-5102 M: (307)399-3816 From: PB Wells Integrity <PBWellsIntegrity@hilcorp.com> Sent: Wednesday, September 28, 2022 1:02 PM To: Regg, James B (CED) <jim.regg@alaska.gov> Cc: chris.wallace@alaska.gov; Oliver Sternicki <Oliver.Sternicki@hilcorp.com>; Bo York <byork@hilcorp.com>; PB Wells Integrity <PBWellsIntegrity@hilcorp.com> Subject: UNDER EVALUATION: Producer 15-41B (PTD #2011460) TIFL Failed 7. Property Designation (Lease Number): 1. Operations Performed: 2. Operator Name: 3. Address: 4. Well Class Before Work:5. Permit to Drill Number: 6. API Number: 8. Well Name and Number: 9. Logs (List logs and submit electronic data per 20AAC25.071): 10. Field/Pool(s): Susp Well Insp Install Whipstock Mod Artificial Lift Perforate New Pool Perforate Plug Perforations Coiled Tubing Ops Other Stimulate Fracture Stimulate Alter Casing Pull Tubing Repair Well Other: Change Approved Program Operations shutdown 11. Present Well Condition Summary: Casing Length Size MD TVD Burst Collapse Exploratory Stratigraphic Development Service 14. Attachments (required per 20 AAC 25.070, 25.071, & 25.283) 16. Well Status after work: 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. OIL GAS WINJ WAG GINJ WDSPL GSTOR Suspended SPLUG Authorized Name and Digital Signature with Date: Authorized Title: Contact Name: Contact Email: Contact Phone: PBU 15-41B Isolate Pools Hilcorp North Slope, LLC 3800 Centerpoint Dr, Suite 1400, Anchorage, AK 99503 201-146 50-029-22492-02-00 12777 Conductor Surface Intermediate Liner Liner 8800 80 3925 10406 425 2512 10098 20" 9-5/8" 7" 5" 2-3/8" 7942 36 - 116 39 - 3964 32 - 10438 10270 - 10695 10265 - 12777 36 - 116 39 - 3558 32 - 8276 8111 - 8529 8106 - 8800 none 470 4760 5410 7250 11780 10098 , 10312 1490 6870 7240 8290 11200 10137 - 12720 3-1/2" 9.2# 13Cr80 30 - 10281 7980 - 8798 Structural 4-1/2" Baker S-3 , 10120 , 7963 No SSSV 10120 , 10210 7963 , 8052 Bo York Operations Manager Jerry Lau Jerry.Lau@hilcorp.com 907-564-5280 PRUDHOE BAY, PRUDHOE OIL / PUT RIVER OIL Total Depth Effective Depth measured true vertical feet feet feet feet measured true vertical measured measured feet feet feet feet measured true vertical Plugs Junk Packer Measured depth True Vertical depth feet feet Perforation depth Tubing (size, grade, measured and true vertical depth) Packers and SSSV (type, measured and true vertical depth) 12. Stimulation or cement squeeze summary: Intervals treated (measured): Treatment descriptions including volumes used and final pressure: 13a.Representative Daily Average Production or Injection Data Oil -Bbl Gas-Mcf Water -Bbl Casing Pressure Tubing Pressure Prior to well operation: Subsequent to operation: 15. Well Class after work: Exploratory Development Service StratigraphicDaily Report of Well Operations Copies of Logs and Surveys Run Electronic Fracture Stimulation Data Sundry Number or N/A if C.O. Exempt: ADL 0028306 30 - 8122 48 0 5865 0 2 0 0 0 251 0 N/A 13b. Pools active after work:N/A 4-1/2" Baker SABL-3 , 10210 , 8052 STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS Sr Pet Eng: Sr Pet Geo: Form 10-404 Revised 10/2022 Submit in PDF format to aogcc.permitting@alaska.gov Sr Res Eng: Due Within 30 days of Operations By Kayla Junke at 3:32 pm, Apr 17, 2023 Digitally signed by Bo York (1248) DN: cn=Bo York (1248), ou=Users Date: 2023.04.13 21:58:46 -08'00' DSR-4/17/23 RBDMS JSB 042023 WCB 11-28-2023 ACTIVITYDATE SUMMARY 3/22/2023 TFS U3 (Assist Slickline w/ Load and Test) Standby for slickline to finish wellwork ***Job continues to 3-23-23*** 3/22/2023 ***WELL S/I ON ARRIVAL*** PULLED PX PRONG FROM 10098' MD BAILED FILL FROM PX PLUG BODY 10098' MD ***CONTINUE ON 3/23/23*** 3/23/2023 *** CONTINUE FROM 3/22/2023 *** RUN VARIOUS BAILERS THROUGH STICKY SPOT FROM 8,840' - 9,200' SLM RUN 2.0" & 2.25" PUMP BAILER DOWN TO PX PLUG BODY @ 10,084' SLM (10,098' MD) PULLED 3-1/2" PX-PLUG BODY FROM 10,095' SLM / 10,098' MD RAN 3' x 1-7/8" BULLNOSE (1.84" OD), FOR CIBP DRIFT TO 10,341" SLM. RAN 3-1/2" BLB, 2.72" G-RING TO 10,276' SLM / 10,283' MD, SET 2-3/8" CIBP @ 10,312' SLM / 10,319' MD SET 3-1/2" PX-PLUG BODY & PRONG @ 10,095' SLM / 10,098' MD SET WHIDDON CATCHER @ 10092' SLM *** CONTINUE ON 3/24/2023 *** 3/23/2023 T/I/O = 1100/670/260. Temp = SI. T FL (SLB req). T FL @ 444' (3151' above sta #1 DMY). WV = C. SV, SSV, MV = O. IA, OA = OTG. 20:00. 3/23/2023 ***Job continued from 3-22-23*** TFS U3 (Assist Slickline w/ Load and Test) Pumped 1 bbls of 60/40, followed by 133 bbls KCL Followed by 22 bbls Crude to load well and freeze protect for slickline ***Job continues to 3-24-23*** 3/24/2023 *** Job continued from 3-23-2023 *** TFS U3 (Assist slickline w/load and test) ****CMIT TxIA PASS**** @ 2700/2700/300 Pumped 5.7 bbls crude to reach test pressure, Bled 2.8 bbls back from IA. ****MIT T FAIL**** 2000/1450/300 Pumped 2.8 bbls down TBG to reach test pressure, Bled back2.6 bbls Tags Hung Well left in Pollard SL control upon departure FWHP= 1300/1000/300 3/24/2023 *** CONTINUE FROM 3/23/2023 *** RAN 3.- 1/2" OM-1, 7" EXT, 1 -5/8" JD TO 9,145' SLM ATTEMPT TO PULL ST #3 (SHEAR OFF) RAN 3.- 1/2" OM-1, 7" EXT, 1 -5/8" JD TO 9,145' SLM ATTEMPT TO PULL ST #3 (CHUCKED DOGS) PULLED ST# 3 RK-DMY GLV FROM 9,145' SLM / 9,143' MD SET RK-DMY GLV IN ST# 3 @ 9,145' SLM / 9,143' MD T-BIRD PERFORM PASSING CMIT-TxIA. T-BIRD PERFORM FALLING MIT-T PULL 3-1/2" WHIDDON CATCHER FROM 10,092' SLM ***JOB COMPLETE, WELL LEFT S/I ON DEPARTURE, DSO NOTIFIED*** Daily Report of Well Operations PBU 15-41B The CIBP is correctly shown on the new WBS, below. -WCB SET 2-3/8" CIBP @ 10,312' SLM / 10,319' MD Mr. Regg, Producer 15-41 (PTD #2011460) is currently Under Evaluation after it failed a diagnostic TIFL on 09/20/22. On 09/26/22 after Slickline set the DGLV, the well exceeded MOASP on the IA. A subsequent TIFL failed which verifies the excursion was sustained casing pressure. This email is to satisfy reporting requirements outlined in CO 492. Plan Forward: 1. Slickline: Set TTP/Perform MITs 2. Well Integrity: Additional diagnostics as needed Please respond with any questions. Andy Ogg Hilcorp Alaska LLC Field Well Integrity andrew.ogg@hilcorp.com P: (907) 659-5102 M: (307)399-3816 From: PB Wells Integrity Sent: Tuesday, September 20, 2022 3:33 PM To: Alaska JMS User <akimsuser@hilcorp.com>; Carrie Janowski <Carrie.Janowski@hilcorp.com>; PB EOC Specialists <PBEOCSpecialists@hilcorp.com>; PB Wells Optimization Engineers <PBWellsOptimizationEngineers@hilcorp.com>; PBE FS3 Drill Sites <FS3DrillsitesFS3Drillsites@hilcorp.com>; PBE FS3 Field Lead Operator <PBEFS3FieldLeadOperator@hilcorp.com>; PBE FS3 Foreman <PBEFS3Foreman@hilcorp.com>; Eric Dickerman <Eric.Dickerman@hilcorp.com> Cc: Bo York <byork@hilcorp.com>; Oliver Sternicki <Oliver.Sternicki@hilcorp.com>; John Condio - (C) <John.Condio@hilcorp.com>; Kevin Brackett <Kevin.Brackett@hilcorp.com> Subject: UNDER EVALUATION: Producer 15-41B (PTD #201146) TIFL Failed All, Producer 15-41B (PTD #201146) was reported by operations with increasing IA pressure. Subsequent warm TIFL failed on 06/20/22 which verifies failure of one or more well barriers. At this time, the well is now classified as UNDER EVALUATION and on a 28 day clock to be resolved. Plan Forward: 1. Slickline: Set DGLV 2. DHD: Re-TIFL Please call with any questions or concerns. Ryan Holt Hilcorp Alaska LLC Field Well Integrity / Compliance Ryan.Holt@Hilcorp.com P: (907) 659-5102 M: (907) 232-1005 CAUTION: This email originated from outside the State of Alaska mail system. Do not click links or open attachments unless you recognize the sender and know the content is safe. You don't often get email from jerry.lau@hilcorp.com. Learn why this is important CAUTION: External sender. DO NOT open links or attachments from UNKNOWN senders. From:Roby, David S (OGC) To:Jerry Lau Subject:[EXTERNAL] RE: DS 15-41B Western Put River Production Question (PTD#201-146) Date:Wednesday, May 10, 2023 3:01:03 PM Attachments:image001.png Hi Jerry, This looks acceptable. Regards, Dave Roby (907)793-1232 From: Jerry Lau <Jerry.Lau@hilcorp.com> Sent: Tuesday, May 9, 2023 1:43 PM To: Roby, David S (OGC) <dave.roby@alaska.gov> Subject: DS 15-41B Western Put River Production Question (PTD#201-146) Dave, I’m starting to plan a Frac job on 15-41B. This is a well that historically comingled the Ivishak and Put River Lobes under a waiver agreement, which has since expired. The well currently has the Ivishak isolated and in near term will have another plug isolating the two Put River lobes from each other. Does the AOGCC see any compliance issues with our plan below?: Isolate each zone per annotated schematic below. Frac and produce the Western Put River (upper lobe, 10,137’-10,192). Once Western Put River production falls off: Renew comingling waiver of Western Put, Central Put, and Ivishak Mill out all plugs and comingle/produce all pools. My team could not identify any regulatory and compliance issues with the plan, but we feel more comfortable checking with you first. Please reach out with any questions or concerns. Thanks Jerry Lau Hilcorp North Slope – Prudhoe Bay East FS3 Operations Engineer (DS 06,07,13,14,15) Cell: (907) 360-6233 Office: (907) 564-5280 The information contained in this email message is confidential and may be legally privileged and is intended only for the use of the individual or entity named above. If you are not an intended recipient or if you have received this message in error, you are hereby notified that any dissemination, distribution, or copy of this email is strictly prohibited. If you have received this email in error, pleaseimmediately notify us by return email or telephone if the sender's phone number is listed above, then promptly and permanently deletethis message. While all reasonable care has been taken to avoid the transmission of viruses, it is the responsibility of the recipient to ensure that the Samuel Gebert Hilcorp North Slope, LLC GeoTechnician 3800 Centerpoint Drive, Suite 1400 Anchorage, AK 99503 Tele: 907 777-8337 Fax: 907 777-8510 E-mail: sam.gebert@hilcorp.com Please acknowledge receipt by signing and returning one copy of this transmittal or FAX to 907 777.8510 Received By: Date: DATE: 03/15/2021 To: Alaska Oil & Gas Conservation Commission Natural Resource Technician 333 W 7th Ave Suite 100 Anchorage, AK 99501 DATA TRANSMITTAL PBU 15-41B (PTD 201-146) PPROF INTERPRETATION REPORT 02/13/2021 Please include current contact information if different from above. PTD: 2011460 E-Set: 34780 Received by the AOGCC 03/15/2021 03/15/2021 Samuel Gebert Hilcorp North Slope, LLC GeoTechnician 3800 Centerpoint Drive, Suite 1400 Anchorage, AK 99503 Tele: 907 777-8337 Fax: 907 777-8510 E-mail: sam.gebert@hilcorp.com Please acknowledge receipt by signing and returning one copy of this transmittal or FAX to 907 777.8510 Received By: Date: DATE : 02/22/2021 To: Alaska Oil & Gas Conservation Commission Natural Resource Technician 333 W 7th Ave Suite 100 Anchorage, AK 99501 DATA TRANSMITTAL PBU 15-41B (PTD 201 -146) PPROF 02/13/2021 Please include current contact information if different from above. PTD: 2011460 E-Set: 34754 Received by the AOGCC 03/08/2021 03/09/2021 STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS SCP t i 20S Form 10-404 Revisetl 04/2017 /�/� K('„�Qt� "'�6 ;gDMS SL." L'/�J Submit Original Only 1. Operations Performed ,,,///'''ppp Abandon ❑ Plug Perforations 11Fracture Stimulate ❑ Pull Tubing 11Operations s�u((1`r� Suspend Perforate 11Other Stimulate ❑ Alter Casing C1Change Ap rove r ❑ Other: Commingle Put River Plug for Redrill ❑ Perforate New Pool ❑ Repair Well ❑ Re-enter Susp Well ❑ and Ivishak- Pull ISPs R1 2. Operator Name: BP Exploration (Alaska), Inc 4. Well Class Before Work Development Rl Exploratory ❑ 5. Permit to Drill Number: 201-146 3. Address: P.O. Box 196612 Anchorage, AK 99519-6612 Stratigraphic ❑ Service 6. API Number: 50-029-22492-02-00 7. Property Designation (Lease Number): ADL 028306 e. Wyll Name and Number: PBU 1541B 9. Logs (List logs and submit electronic and pnnted data per 20AAC25.071): 10. Field/Pools: PRUDHOE BAY. PUT RIVER OILIPRUDHOE BAY, PRUDHOE OI 11. Present Well Condition Summary: Total Depth: measured 12777 feet Plugs measured None feet true vertical 8800 feet Junk measured None feet Effective Depth: measured 12742 feet Packer measured 10120 / 10210 feet true vertical 8799 feet Packer true vertical 7963 / 8052 feet Casing: Length: Size: MD: TVD: Burst: Collapse: Structural Conductor 80 20" 36-116 36-116 1490 470 Surface 3929 10-3/4" x 9-5/8" 35-3964 35-3558 5210/6870 2480/4760 Intermediate 10406 7" 32-10438 32-8276 7240 5410 Liner 425 5" 10270 - 10695 8111-8529 8290 7250 Liner 2512 2-3/8" 10265 - 12777 8106-8800 11200 11780 Perforation Depth: Measured depth: 10137 - 12720 feet True vertical depth: 7980-8798 feet Tubing (size, grade, measured and true vertical depth) 3-1/2" 9.2#, 13Cr8o / L-80 30-10281 30-8122 4-1/2" BAKER S-3 HYDRO SET PACKER 10120 7963 Packers and SSSV (type, measured and 4-1/2" BAKER SABL-3 PACKER 10210 true vertical depth) 8052 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-Mcf Water -Bbl Casing Pressure Tubing Pressure Prior to well operation: 126 2200 24 1482 289 Subsequent to operation: 958 15022 27 0 326 14. Attachments: (required per20 MC 25 070 2 5, 071, &25283) 15. Well Class after work: Daily Report of Well Operations 0 Exploratory ❑ Development p Service ❑ Straligraphic ❑ Copies of Logs and Surveys Run ❑ 16. Well Status after work. D Oil Gas ❑ WDSPL ❑ Printed and Electronic Fracture Stimulation Data ❑ 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: 319-071 Authorized Name: Brown, Don L. Contact Name: Brown, Don L. Authorized Title: Petroleum Engineer Contact Email: browd2ABP.com Authorized Signature: a077 y /'Y) Date: Ct 1 Contact Phone: 119075644675 Form 10-404 Revisetl 04/2017 /�/� K('„�Qt� "'�6 ;gDMS SL." L'/�J Submit Original Only Daily Report of Well Operations PBU 15-41B ACTI V ITYnATF ****WELL SHUT IN ON ARRIVAL****(profile modification) RUN 2.25" CENT, 1-3/4" S BAILER TO 10,185' SLM (bailer full of paraffin) RUN 10'x 2.25" PUMP BAILER W/ mule shoe ball bottom TO 10,185' SLM.(bailer & tools full of sticky asphaltine/paraffin) RUN 2' 1-7/8" STEM, 2.78" BLIND BOX TO 8225' SLM (unable to pass) ****FL @ 5100' SLM**** 4/10/2019 ****CONT WSR ON 4-11-19**** ****CONT WSR FROM 4-10-19****(profile MOD) RUN KJ, 2.25" CENT, 15'x 1.75" DRIVE DOWN BAILER TO 10,184' SLM (1/2 gal recovered) RUN KJ, 10'x 2.25" PUMP BAILER w/ mule shoe ball bottom TO 10,189' SLM R/D DUE TO WEATHER 4/11/2019 ***WELL LEFT S/I, DSO NOTIFIED ON DEPARTURE*** ***WELL S/I ON ARRIVAL & CONTINUE JOB FROM 4/11/19 SWCP 4518***(profile mod) RAN 2.25" x 10' PUMP BAILER TO 10,190' SLM. 4/14/2019 ***CONTINUE WSR TO 4/15/19*** ***CONTINUE WSR FROM 4/14/19 SWCP 4518***(profile mod) MADE 6 BAILER RUN'S FROM 10,190' SLM TO 10,205' SLM. 4/15/2019 ***CONTINUE WSR TO 4/16/19*** ***CONTINUE WSR FROM 4/15/19 SWCP 4518*** MADE 2 BAILER RUNS FROM 10,205' SLM TO 10,211' SLM. RAN 2.50" CENT, 2.30" LIB TO 10,211' SLM W/ GOOD IMPRESSION OF IBP. RAN 2.50" PUMP BAILER W/IBP EQ FLAPPER BTM TO 10,215' SLM. PULLED 2.13" IBP FROM 10,215' SLM. MADE 2 RUNS W/ BRUSH, 2.72" WIRE GRAB TO DEPLOY SLV @ 10,265' SLM (10212' ELMD) & RECOVERED TWO BIG PIECES OF ELEMENTS. 4/16/2019 ***CONTINUE WSR TO 4/17/19*** ***CONTINUE WSR FROM 4/16/19 SWCP 4518***(profile mod) RAN 1.75" CENT, 1.50" LIB TO 10,490' SLM IMPRESSION OF DEPLOY SLV & FILL. MADE 3 RUNS W/ 1.75" x 10' PUMP BAILER FROM 10,490' SLM TO 10,495' SLM. RAN IBP EQ SLV W/TATTLE TALE PIN TO IBP @ 10,495' SLM (pressure change). MADE 3 ATTEMPTS TO PULL IBP(1 hr of total jar time) FROM 10,495' SLM). 4/17/2019 ***CONTINUE WSR TO 4/18/19*** ***CONTINUE WSR FROM 4/17/19 SWCP 4518***(profile mod) ATTEMPT TO PULL IBP FROM SID @ 10,479' SLM & UNABLE TO LATCH. MADE 2 RUN W/ 1.75" x 10' PUMP BAILER TO @ 10,491' SLM. ATTEMPT TO PULL IBP FROM 10,491' SLM(3hr's of jar time). RAN 1.75" x 10' PUMP BAILER TO @ 10,491' SLM. 4/18/2019 ***CONTINUE WSR TO 4/19/19*** ***CONTINUE WSR FROM 4/18/19 SWCP 4518***(profile mad) MADE (3) 10'x 1.75" PUMP BAILER RUNS TO 10,492' SLM. DRIFT W/ 2.79" CENT TO 10,222' SLM W/ NO ISSUES. ATTEMPT TO SET 3-1/2" IBP STOP SID HIGH @ 9604' SLM WORK TOOLS DOWN TO 9657' SLM TOOL SHEARED & LEFT IBP STOP IN HOLE. MADE 2 ATTEMPTS TO PULL IBP STOP FROM 9657' SLM UNABLE TO LATCH. RAN 3-1/2" BRUSH & 2.805" G -RING FOR B&F SID ON IBP STOP @ 9663' SLM PUSH DOWN TO 10,073' SLM. IN HOLE W/ 10'x 2.5" PUMP BAILER. 4/19/2019 ***CONTINUE WSR TO 4/10/19*** Daily Report of Well Operations PBU 15-41B ***CONTINUE WSR FROM 4119119 SWCP 4518***(profile mod) PULLED IBP STOP FROM 10,085' SLM (10,098' MD) RAN 2.805" G-RING, 3 1/2" BLB, BRUSHED X-NIP @ 10,098' MD, TAG DEP SLV @ 10,265' SLIM SET 3 1/2" IBP STOP @ 10,085' SLM (10,098' MD) RAN 3 1/2" CHECK SET TO 10,085' SLM (sheared) ***WELL LEFT S/1 DSO NOTIFIED ON DEPARTURE*** **IBP PULLING TOOL IS PLANTED ON IBP (SET 04/17/2019)*** 4/20/2019 PULLED 3 1/2" IBP STOP FROM 10,085' SLM (10,098' MD) PULLED IBP FROM 10,255' SLM. (IBP HAD MOVED UPHOLE AFTER ATTEMPT TO PULL IT FROM 10515' APRIL 16-20). RAN 3-1/2" BRUSH & 2.63" WIRE GRAB TO DEPLY SLV @ 10,267' SLIM NO RECOVERY. RAN 1.75" TWO PRONG WIRE GRAB(WG-02) DEV OUT @ 10,997' SLIM NO RECOVERY. 6/13/2019 ***WELL LEFT S/I ON DEPARTURE*** CTU #8 1.75" CT 0.156WT. Objective: Xylene Treatment MIRU. Standby for high winds. MU 2.75" DJN and drift. Drift to TOL at 10265ft. 8/2/2019 **In Progress" CTU #8 1.75" CT 0.156WT. Objective: Xylene Treatment Continue POH w/ drift. MU & RIH w/ Latching Standing Valve. Sting into deployment sleeve but could not release G spear. Drop 5/8" disconnect ball. POOH. RIH w/ 2" SJN. **NOTE** Northern Solutions Standing Valve Snap latch left in hole in TOL at 10265' - pinned to 7500lbs to release. Also left Baker disconnect from MHA. CAL - 17.77' 8/3/2019 **In Progress' CTU #8 1.75" CT 0.156WT. Objective: Xylene Treatment Continue to RIH w/ 2" SJN. Pump 140dF crude down IA (125bbis). Jet diesel across perfs. Pump 80bbls of 50/50 diesel/xylene & jet across perfs. Lay in diesel/xylene to —1800'. LD tools. RDMOL. 8/4/2019 **Job Complete** ***WELL S/I ON ARRIVAL***(profile mod) RAN 2.60" CENT & 2.50" LIB TO 10,250' SLM. CLEAN IMPRESSION OF TOP OF COIL FISH. 8/13/2019 ***CONT ON 8-14-19 WSR*** ***CONT FROM 8-13-19 WSR***(profile mod) FISHED COIL TOOLS (17.7') FROM LINER TOP AT 10,265' MD. SET 3-1/2" DOWNHOLE CHOKE ASSY(16/64") IN X-NIPPLE @ 10,245' MD. CONFIRMED GOOD SET W/ 3-1/2" CHECK SET.(sheared) 8/14/2019 ***WELL S/I ON DEPARTURE, DSO NOTIFIED OF WELL STATUS*** LRS Well Test Unit 1. Begin WSR on 8/16119. Xylene Flowback / Well Test. MIRU, PT Hard line. IL 8/16/2019 Well 15-41 OL Well 15-36. Continue WSR on 8/17/19 LRS Well Test Unit 1. Continue WSR from 8/16/19. Xylene Flowback /Well Test, Complete PT, 8/17/2019 POP well to portable separator. IL Well 15-41 OL Well 15-36. Continue WSR on 8/18/19 LRS Well Test Unit 1. Continue WSR from 8/17/19. Xylene Flowback / Well Test. Start 18Hr Well 8/18/2019 Test, End 18Hr Well Test. IL Well 15-41 OL Well 15-36. Continue WSR on 8/19/19 LRS Well Test Unit 1. Continue WSR from 8/18/19. Xylene Flowback / Well Test. Start 18Hr Piggy Back Well Test, End 18Hr piggy back Test. Begin Blow Down and Rig down. IL Well 15-41 OL Well 15-36. Continue WSR on 8/19/2019 8/20/19 LRS Well Test Unit 1. Continue WSR from 8/19/19. Xylene Flowback / Well Test. Rig Down. IL Well 8/20/2019 15-41 OL Well 15-36. Job Complete, End WSR on 8/20/19 TREE= 4-1/16"CNV 5K 1 39' 9-5/8" CSG, 474, L-80, D = 8.681" 1-� 39W Minimum ID = .25" @ 10245' 3-1/2" X LOCK W/ CHOKE ASSY 3-12^ TBG, 9.2#, FOX 13 -CR -80, D = 2.992' 10148' SAFEfYNOTES: DURINGRWOTHE 3-12"UNIQUE OVERSHOT WAS SPACED OUT TO SWALLOW 3- 12" TBG STIR @ 10170'. DEPTH DISCREPANCY DUE TO E4JNE VS RIG MEASUREMENT. 3-12" X LOCK xd CHOKE ASSY, D = 25" (8/14/19) 1 TOP OF 2-3/8" 4J#, STL LNR, D = 1.995'10268' 3-12" 1 10280' 1 7" CSG, 26#, L-80, D = 6276" 10438' 15-41 B SAFETY NOTES: WELL ANGLE> 70" @ 10970' & > 90" 11169'. NOTE NO SSSVN / LANDING NIP WERE RUN @ THE NORMAL +/- 2000' DEPTH. NOTE DRIFT RESTRICTION THRU TOL, 1-11116" LOGGING TOOLS WOULDN'T PASS 05/23/03 - CHROME LNR & TBG PERFORATION SLRAMRY REF LOG: SM MCPL GR/CCL ON 10/08/01 ANGLE AT TOP PUT 11^Q 10137' Note: Refer to Production DB for historical pert data SEE SPF INTERVAL Opn/Sgz DATE 2-1/2" 6 10137- 10192 O 12/13/04 2-1/4" 6 10225-10260 O 11/04/04 1-11/16" 4 12040-12363 O 10/09/01 1-11/16" 4 12401 - 12704 0 10/09/01 1-11/16" 4 12714 - 12720 0 10/09/01 5" LNR, 15#, 13 -CR -80, D=4.408" 11150' 101' J -14-i/2" X 3-1/2' TBG XO, ID GAS LFT M4MM C ST M) 10245' 3-1/2" OTIS X NP, D = 2.813" 10265' VLV LATCH PORT DATE 1 3595 10276' ELMD TT LOGGED 09/12101 10 DO RK 16 07!13/18 2 6764 M30C0k-FMFK) iD SO RK 20 07/13/18 3 9143 K) DMY R< 0 05/11/064 10026 O DMY RK 0 05/11/06 2.813" 10120' �-17X4-1/2"BAKB2 S-3 PKR, ID= 10145' 3-12" H� X NP, D = 2.813" 10170' CHEM cur TBG STUB - 1223/00 10174' 3-12" UNIQUE OVERSHOT, ID=', 10207' H 3-1/2" X 4-12" XO, ID = 2.992" 10210' H7- X 4-12" BAKER SABL-3 PM 10214' 4-1l2" x 3-12" XO, ID = 2.992" 10245' 3-1/2" OTIS X NP, D = 2.813" 10265' 2.70"BKR DEPLOYMENT SLV,D 10267 312"PARKERSWN NP, D=2.7 10270' 7" X 5' TNV LNR/R)GRIPKR 10281' 3-12^ Ti WLEG 10276' ELMD TT LOGGED 09/12101 10515' 1 1.69" BAKER BP SET 10/20/04 5" SIDETRACK WH)OW ( 15-418 ) 10695' - 10705' ( OFF CMF RAMP) ' NOTE PRE -15418 SDTRK WELLBORE NOT SHOWN ON THS \ DIAGRAM 12-3/13- LNR 4.7#, L-80_0039 bpf, D= 1.995^ 1 PRUDHOE BAY UNIT WELL: 15416 PERMrr ND: 2011460 API No: 50-029-22492-02 TI IN, R14E. 1474' SNL 84561 BP Exploration (AFbska) BY COMMENTS DATE REV BY COMMENTS ORIGINAL COMPLETION 04/22/19 B/JMD PULL BP/SETBP STOP(0420/19) RWO 0621/19 RB/JMD PULLED BP STOP & BOT BP (06113/19) PDATEREV RWO O8/OB/19 MRlJMD FISH DH (08/03/19) ABORTED SIDETRACK0821/19 MTWJMD SET DH CHOKE ASSYMULLED FISH CTD SIDETRACK DD/JMD ADDED OKB B BF ELEV PRUDHOE BAY UNIT WELL: 15416 PERMrr ND: 2011460 API No: 50-029-22492-02 TI IN, R14E. 1474' SNL 84561 BP Exploration (AFbska) THE STATE °fALASKA GOVERNOR MIKE DUNLEAVY Paulina Meixueiro Production Engineer BP Exploration (Alaska), Inc. P.O. Box 196612 Anchorage, AK 99519-6612 Re: Prudhoe Bay Field, Prudhoe Oil Pool, PBU 15-41B Permit to Drill Number: 201-146 Sundry Number: 319-071 Dear Ms. Meixueiro: Alaska Oil and Gas Conservation Commission 333 West Seventh Avenue Anchorage, Alaska 99501-3572 Main: 907.279.1433 Fox: 907.276.7542 v✓wve. aogcc.aloska.gov Enclosed is the approved application for the sundry approval relating to the above referenced well. Please note the conditions of approval set out in the enclosed form. As provided in AS 31.05.080, within 20 days after written notice of this decision, or such further time as the AOGCC grants for good cause shown, a person affected by it may file with the AOGCC an application for reconsideration. A request for reconsideration is considered timely if it is received by.4:30 PM on the 23rd day following the date of this letter, or the next working day if the 23rd day falls on a holiday or weekend. Sincerely, Daniel T. Seamount, Jr. Commissioner DATED this day of February, 2019. 6 ti 0'1019 RBDMsS`� STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION APPLICATION FOR SUNDRY APPROVALS 20 AAC 25.280 "U--ULIVD FEB s � -n?c 1. Type of Request: Abandon ❑ Plug Perforations ❑ Fracture Stimulate ❑ Repair Well ❑ Operations Shutdown ❑ Suspend ❑ Perforate ❑ Other Stimulate ❑ Pull Tubing ❑ Change Approved Program ❑ Plug for Redrill I] Perforate New Pool Other: Commingle Put River C1 ❑ Re-enter Sul Well ❑ Alter Casing ❑ and lvishak - Pull IBPs 2, Operator Name: SP Exploration (Alaska), Inc 4. Current Well Class: Exploratory ❑ Development 0 5. Permit to Drill Number 201-146 a 3, Address: P.O. Box 196612 Anchorage, AK 6. API Number: 50-029-22492-02-00 99519-6612 Stra[igraphic ❑ Service ❑ 7. If perforating: What Regulation or Conservation Order governs well spacing in this pool? 8. Well Name and Number: Will planned perforations require a spacing exception? Yes ❑ No 0 PBU 1541B 9. Property Designation (Lease Number): 10. Field/Pools: ADL 028306 1 PRUDHOE BAY. PUT RIVER OIUPRUDHOE BAY. PRUDHOE OIL 11, PRESENT WELL CONDITION SUMMARY Total Depth MD (ft): Total Depth TVD(ft): Effective Depth MD' Effective Depth TVD: MPSP (psi): Plugs (MD): Junk 12777 8800 10212 8054 10212,10515 None Casing Length Size MD TVD Burst Collapse Structural Conductor 80 20" 36-116 36-116 1490 470 Surface 3929 10-3/4" z 9-5/8" 35-3964 35-1... 5210 / 6870 2480/4780 Intermediate 10406 T' 32-10438 32-8276 7240 5410 Liner 425 5" 10270 - 10695 8111-8529 8290 7250 Liner 2512 2-3/8" 10265 - 12777 8106-8800 11200 11780 Perforation Depth MD (ft): Perforation Depth TVD (ft): Tubing Size: Tubing Grade: Tubing MD (ft): 10137 - 12720 7980 - 8798 3-1/2" 9.2# 13Cr80 / L-80 1 30-10281 Packers and SSSV Type412" BAKER S-3 HYDRO SET PACKER Packers and SSSV MD (ft) and TVD (ft): 10120 / 7963 412" BAKER SABL-3 PACKER 10210/8052 No SSSV Installed Na SSSV installed 12. Attachments: Proposal Summary 0 Wellbore Schematic 0 13. Well Class after proposed work: Detailed Operations Program ❑ BOP Sketch ❑ Exploratory ❑ Stratigraphic ❑ Development p Service ❑ 14. Estimated Date for Commencing Operations: 3/15/2019 15. Well Status after proposed work: Oil 0 WINJ ❑ WDSPL ❑ Suspended ❑ 16. Verbal Approval: Date: GAS ❑ WAG 11GSTOR ❑ SPLUG ❑ Commission Representative: GINJ ❑ Op Shutdown ❑ Abandoned ❑ 17. 1 hereby certify that the foregoing is true and the procedure approved herein will not Contact Name: Meixueiro, Pauline be deviated from without prior written approval. Authorized Name: Mail Pauline Contact Email: paulina.meixueiroobp.com Contact Phone: +1 907 564 5971 Authorized Title: Production Engineer - Authorized Signature: — a.. -J,.. !.l•_�s... -c Date: 0413119 COMMISSION USE ONLY Conditions of approval: Notify Commission so that a representative may witness Sundry Number: /) Plug Integrity ❑ BOP Test ❑ Mechanical Integnty Test ❑ Location Clearance ❑ Other: Post Initial Injection MIT Req'd? Yes ❑ No ❑I / Spacing Exception R wired? Yes ❑ No El Subsequent Form Required: /,0'ZJ� 4f APPROVED BYTHE y Approved by COMMISSIONER COMMISSION Date: ORIGINAL RBDMEB 2 0 2019 1•vt1-BIZ�Qi� Submit Form and Form 10-403 Revised 04/2017 Approved application is valid for 12 months from the date of approval. Attachments in Duplicate Q�t'/l1 5'x4.8. Lill 30-403 Sundry Application for Well PBU 15-41B PTD #201-146 Expected Start Date: March 15, 2019 Current condition of well: Production Well, Operable: Gas Lift Rate: 3000 Mscf/Da Flowing Tubing Pressure: 289 psi Shut-in Wellhead Pressure: 2582 psi Reservoirpressure: 4306 psi Well History and Objective(s): This well was selected for a Put River appraisal in DS15 back in 2004. The Ivishak was isolated by setting an IBP at 10,515'MD. The lower Put River was perforated from 10,225 -10,260' on 11/3/04. This lower lobe did not flow. Following a CT hydrate cleanout, an IBP was set at 10,212' in 12/04. The upper Put River was perforated from 10,137'— 10,192' on 12/13/04 and flowed with average rates of 95 bopd with 3.6 mmcfd. The objective of this program is to pull the IBP's to commingle Ivishak and Put . River. A retrievable packer system in the 3-1/2" with a GLV so the Ivishak gas can be used for in situ gas lift. A 16/64" port designed to allow —4 mmscfd formation gas has been selected. Proposed program: �/ s L /G)eZ 1,41C 1 2 3 4 5. 6. 7 B&F with HOT crude. Drift to IBP with sample bailer. Bail to fill to clear fishing neck. Pull Baker 2-1/2" IBP 10,212' MD as per manufacturer's specifications. ✓ Drift to IBP @ 10,515' MD with LIB to understand where are we sitting (fill or IBP fishing neck). Send pictures to Pau lina.meixueirona bp.com and brownd2 a bp.com Pull 1.69" Baker IBP 10,515' MD as per manufacturer's specifications Tag TOL then pick up a foot to set the WFT Wide Pack packer 10,261' (mid element) with 16/64" port orifice. (Contact Carl Diller / Bob Harris for details) PBGL. Coordinate hardline rig up so PBGL can be used for KO. BP Exploration (Alaska), Inc. P.O. Box 196612 Anchorage, AK 99519-6612 10-403 Sundry Application for Well PBU 15-41B PTD #201-146 Current Wellbore Schematic: 17741= 41/16'CIW5K SAFETY No7NEOT WELL SANGLE>LN 1 7wERE90" 15-41 B @1115 RUN @ THE NORMAL N• 2000' DEPTH NOTE DWf RESTRICTION TIRU TOL, 1-11110' LOGGING TOOLS WOULOMT PASS 0523A3 -CHROME LNR& TBG 0.314- CSG, 4S Sk. '_ 80, U = 9 953- .'-y 39- 45x8' CSG, 47M, L-60. D = 8.681' -� 3964' Minimum 10 - 1 A96^ � 10968' !TOP OF 2-38" LNR SAFETY NOTES: DURIGRWO THE 3 -12 -UNDUE OVERSHOT WAS SPACE) OUT TO SWALLOW 3- 1 M- TBG STIR @ 10170'. DEPTH DISCREPANCY OW TO ELME VS FOG MEASUREMENT. !TOP OF 2-38' 4.74, STL LHR, C = 1.995' 10266' 13-12'1BG.924,1-80-.0087bpf,0=2.992' - 102811' 7 -(SG, 26%, L -M, D = 6216- PEFSORATDNSLIAMARY Ida LOG, Sm M. -FL C46UL ON VYD 1 ANGLEATTOPPOW il' W 10225 Noll. (tela to ReducBon CO (a l�bncal pert da.a SEE SWI 9418iVAL OpNSgz MTF 2-112' 6 10137-10192 C 12113/04 2 1N' 6 10225 10260 C 11IOM04 1-11A 4 112010-12363 C 10109'01 1 11116• 4 12401 12704 C 10/0931 L1 V16' d 12714-197M C tONW01 03105/01 0=4.40S' FAM,! 11 r -AC I FT MMN1YdA C S- MD I TVD DEV I TYFE IVLV I LATCH PORT MTF 1 3595 W15 48 OOMP w 16 07!13!19 2 6766 53M 53 CA -FMD SOI w 20 07;13+19 3 9143 7017 �CA-FMD 30 CA -FMD OMfY RK 0 05/11!06 4 10026 7871 11 CA -FMD OMP TM 0 05111!06 10170• r -i r X 4-v2. OAKLR S-3 wA C = 10146'H11,2•HESXNP,D=2.613- 10170' -!CHEM CUT TSG STUB -12123100 _- 10174' H3-tr[•'.1FiouE ovasHDT,D=: ___-_ 10217 H2-1i2'BAKER BP SET I2/11A1 XS?14 Vw uM W, u=4.a1S � 10616' 189'BAKBT BPSEf 102004 V SDETRACK VITDOW ( 15 41 El) 10696 10705' (OFFCMRRAMP) - 137E PRE-15-41BSDRM 1'VWJA *1 IDI SHD GNles \ UAGNAM FOTO12742' BP Exploration (Alaska), Inc. P.O. Box 196612 Anchorage, AK 99519-6612 TO" DE BAY LINT W LL 15-416 POW W. 2011460 An No: 50-62422492-02 T11N R14E 1474' SNL 84566' FEL BP EaploraUon (Alaska( 10-403 Sundry Application for Well PBU 15-41B PTD #201-146 Proposed Wellbore Schematic: I HFV EUV= PROPOSED 15-41 B = 4'R Minimum ID 1.996" @ 10268' TpP OF 2_3; L SAFETY NOTES: DURDIGRWO TW 3-12-UNKRE OVERSHOT WAS SPACED OUT TO SWALLOW 3- 12- TBLT STUB G 10170'. DEPTH DMCREPANCY DUE TO E4JNE VS RIG MFASUREWNT. PEWORATDNSUI&MRH REF LOG SWE MDL GFVCQ- ON 180501 ANGLEATTOPFURF IT 010226 ML Mfw W PMd.c 08 Far A W6a1 Pert dah SQE SFF BLFHNAL OpNSgz DATE 2-i!6' 6 10137- 10192 C 17/1314 2-11P 6 1(225 10760 C 11104!01 1-11!16' 4 1240- 12363 C 10109701 1-11116' 4 12401- 1214 C 10'09'01 1-11116' 4 12714-12720 C 10109'01 SAFETY NOTES: WELL ANGLE a 70'@ 10970' 8 r 90' I @11169'. NDTE NO SSSVNILANDINGMPWERE WJN@ THE NORMAL H- 2000' DEPTH NOTE DRIFT RESTRICTION THRU TOL, 1-11116" LOGGINGTOOLS WOULDN'T PASS 0523A3 -CHROME LNR6 TBC GS LFT MONDFFIS ST No ITVDjDEVj TYPE JVLVILATCHIPOFITJ 11H2104 GMGNYIL COMPLEM 100L15 ADIJAD SET PA FLUS(0929115) elivow Faw 07/17118 DLGIJMT RLILFLUGSETBPST0Pw1FLO%1 H87 DATE 1 3595 CTD910EFRACK 48 G-f#6O RP BgADraUw (Abwkai F6L 18 2 6764 5399 53 G -FMD SO W 20 /13/18 3 9U3 J3315 7047 30 G -FMD DRAY W 0 �007 05111816 4 10026 7971 11 G -IABD OM1' RK 0 05'11/06 X( 12'%Ll D=2 Wr 5- SIDETRACKNH70'N (15-418) 1WW 10705' (OFFAAt MAP) FOIE PRE-15418SOTRK W81801E1DTSHWWONTHS \ 04AGRAM 0=]875' BP Exploration (Alaska), Inc. P.O. Box 196612 Anchorage, AK 99519-6612 RLDFDE BAY LM WBL: 15-418 PERMTM: 2011460 ARM: 54029-22492-02 SEC 22, 71 IN, R14E 1474'SAL 64586 FEL I DATE REV BY I OOMAAN 9 H DATE I REV BY I OOMVENTS 11H2104 GMGNYIL COMPLEM 100L15 ADIJAD SET PA FLUS(0929115) elivow Faw 07/17118 DLGIJMT RLILFLUGSETBPST0Pw1FLO%1 H87 011HM1 FIWO 07!17118 CLGIJAD CLV C00 (07113t19) 69!05101 ABOFITDSWEFRACK MIN18 2VIJIID FLLLrD ROW THW SLAI (09111118) 10100101 CTD910EFRACK 118)W18 MAD ADDED00380FELEL RP BgADraUw (Abwkai 05119106 KSB7RH GLV CK1105111A6) BP Exploration (Alaska), Inc. P.O. Box 196612 Anchorage, AK 99519-6612 ~~ BP Exploration (Alaska) Inc. Attn: Well Integrity Coordinator, PRB-20 Post Office Box 196612 Anchorage, Alaska 99519-6612 January 1, 2010 Mr. Tom Maunder Alaska Oil and Gas Conservation Commission 333 West 7t" Avenue ~ ~ I Anchorage, Alaska 99501 / Jf. "_ ~, Subject: Corrosion Inhibitor Treatments of GPB DS 15 Dear Mr. Maunder, Enclosed please find multiple copies of a spreadsheet with a list of wells from GPB DS 15 that were treated with corrosion inhibitor in the surface casing by conductor annulus. The corrosion inhibitor is engineered to prevent water from entering the annular space and causing external corrosion that could result in a surface casing leak to atmosphere. The attached spreadsheet represents the well name, API and PTD numbers, top of cement depth prior to filling and volumes of corrosion inhibitor used in each conductor. As per previous agreement with the AOGCC, this letter and spreadsheet serve as notification that the treatments took place and meet the requirements of form 10-404, Report of Sundry Operations. If you require any additional information, please contact me or my alternate, Anna Dube. Sincerely, Torin Roschinger BPXA, Well Integrity Coordinator BP Exploration (Alaska) Inc. Surface Casing by Conductor Annulus Cement, Corrosion inhibitor, Sealant Top-off Report of Sundry Operations (10-404) DS-15 natP~ (11/5/10 t Well Name PTD # API # Initial top of cement VoI. of cement um ed Final top of cement Cement top off date Corrosion inhibitor Corrosion inhibitor/ sealant date ft bbls ft na al 15-01B 2042570 50029206960200- NA Sealed NA 15-02B 2060720 50029206970200 NA Sealed NA 15-03 1820300 50029207220000 NA Sealed NA 15-048 2071380 50029207260200 NA Sealed NA 15-05A 1950340 50029207310100 NA Sealed NA 15-06A 1982540 50029207420100 NA 6.7 NA 40.8 11/7/2009 15-07C 2030970 50029211660300 NA 5 NA 34.0 11/10/2009 15-08C 2050050 50029211800300 NA 6.5 NA 45.9 11/28/2009 15-09A 1931380 50029212010100 NA 0.9 NA 5.1 11/11/2009 15-10A 1880850 50029205010100 NA Sealed NA 15-11 B 2041460 50029206530200 NA Sealed NA 15-126 2060870 50029206650200 NA Sealed NA 15-13A 1991240 50029206450100 NA Sealed NA 15-14A 2042220 50029206820100 NA Sealed NA 15-15C 2081820 50029206910300 NA Sealed NA 15-16A 2011920 50029211150100 NA 0.3 NA 3.4 11/7/2009 15-17 1840890 50029211260000 NA 14.7 NA 132.6 12/4/2009 15-18A 2080830 50029222740100 NA 0.4 NA 1.7 11/11/2009 15-19A 1990990 50029218290100 NA surface NA 15-20C 2050930 50029211330300 NA 17 NA 120.7 12/2/2009 15-21A 1990290 50029205030100 NA Sealed NA 15-22 1800970 50029205090000 NA Sealed NA 15-23A 2031110 50029222250100 NA 0.7 NA 3.4 10/7/2009 15-24 1911280 50029222230000 NA 1.3 NA 10.2 10/7/2009 15-25B 2080240 50029218420200 NA 0.8 NA 6.8 11/12/2009 15-26B 2041590 50029222350200 NA 0.3 NA 1.7 10/8/2009 15-27 1920060 50029222430000 NA 0.3 NA 1.7 10/8/2009 15-28A 2031240 50029222470100 NA 0.5 NA 8.5 11/9/2009 15-29B 2090380 50029222590200 NA 0.1 NA 1.7 11/10/2009 15-30A 2020890 50029222820100 NA 0.8 NA 5.1 11/11/2009 15-318 2050860 50029222850200 NA 1.2 NA 3.4 11/11/2009 15-32A 2011840 50029224620100 NA 1.5 NA 10.2 10/7/2009 15-336 2031940 50029224480200 NA 1.6 NA 10.2 11/29/2009 15-34A 2001370 50029224740100 NA 1.4 NA 8.5 11/10/2009 15-35 1940880 50029224880000 NA 1.8 NA 15.3 11/10/2009 15-36B 2060730 50029224800200 NA 1 NA 5.1 11/10/2009 15-37B 2040190 50029224850200 NA 1.3 NA 10.2 11/9/2009 15-38A 2030160 50029224960100 NA Sealed NA 15-39A 2060860 50029225030100 NA 0.3 NA 1.7 11 /9/2009 15-40A 1980980 50029225110100 NA 1 NA 5.1 11(9/2009 15-418 2011460 50029224920200 NA 1.2 NA 6.8 11/9/2009 15-428 2090730 50029226240200 NA 1.5 NA 11.9 11/11/2009 15-44 1961100 50029226830000 NA 3.5 NA 30.6 12/17/2009 15-458 2071790 50029226710200 NA 1.7 NA 11.9 11/8/2009 15-46 2041030 50029226650000 NA 1.9 NA 17.0 11/9/2009 15-47 1951740 50029226170000 NA 1.5 NA 10.2 10/9/2009 15-48B 2051660 50029226350200 NA 1.2 NA 10.2 10/8/2009 15-49B 2090640 50029226510200 NA 7.3 NA 51.0 11/8/2009 . . "~ .,..'........ - ...... " ~ .. .. MICROFILMED 07/25/06 DO NOT PLACE ANY NEW MATERIAL UNDER THIS PAGE F:\LaserFichc\CvrPgs _ Inserts\Microfilm _ Marker.doc _.) STATE OF ALASKA ) ALASKA OIL AND GAS CONSERVATION COMMISSIRECEIVE REPORT OF SUNDRY WELL OPERAT~gn~ 7nn, 1. Operations Performed: Abandon D Alter Casing D Change Approved Program D StimWIp-te~'1 o. C ¡O, Otherr.1 RUGS I ~ ails. lJomrmsSKm Waiver Am;ho1ilijJè Extension D Re-enter Suspended Well D 5. Permit to Drill Number: 201-1460 6. API Number 50-029-22492-02-00 12. Stimulation or cement squeeze summary: Intervals treated (measured): . Treatment descriptions including volumes used and final pressure: Representative Daily Average Production or Injection Data Gas-Met Water-Bbl Casing Pressure 16.2 4 700 16.6 4 975 Repair Well 0 PluQ Perforations[K] Pull Tubing 0 Perforate New Pool D Operation Shutdown 0 Perforate ŒJ 2. Operator Name: 3. Address: 66.25 8. Property Designation: ADL-0028306 11. Present Well Condition Summary: 4. Current Well Class: Development Œ] Stratigraphic D 9. Well Name and Number: 15-41 B 10. Field/Pool(s): Prudhoe Bay Field 1 Prudhoe Oil Pool BP Exploration (Alaska), Inc. P.O. Box 196612 Anchorage, Ak 99519-6612 7. KB Elevation (ft): ExploratoryD Service D Total Depth measured 12777 feet true vertical 8799.9 feet Plugs (measured) Effective Depth measured 10212 feet true vertical 8054.0 feet Junk (measured) Casing Length Size CONDUCTOR 80 20" 91.5# H-40 LINER 425 5" 15# 13CR80 LINER 2512 2-3/8 Inch 4.7 Lb L-8 PRODUCTION 10404 7 Inch 26 Lb L-80 SURFACE 4 10-3/4 Inch 45.5 Lb L SURFACE 3925 9-518 Inch 47 Lb L-80 Measured depth: 10137 -10172,10172 -10192 MD TVD 36 116 36.0 - 116.0 10270 - 10695 8111.0 - 8529.3 10265 - 12777 8106.1 - 8799.9 34 - 10438 34.0 - 8276.3 35 39 35.0 - 39.0 39 - 3964 39.0 - 3558.1 True vertical depth: 7980.32 - 8014.72,8014.72 - 8034.36 TubinQ ( size, Qrade, and measured depth): 4-1/2" 12.6# 13Cr80 3-1/2" 9.2# 13Cr80 4-1/2" 12.6# 13Cr80 113 10118 10126 @ 30 @ 113 @ 10118 Packers & SSSV (type & measured depth): 4-1/2" Baker S-3 Hydro Set Packer @ 10270 4-1/2" Baker SABL-3 Packer @ 10120 5" TIW Top Packer @ 10210 SCANNr:D FED C 4 LOGS 13 Prior to well operation: Subsequent to operation: Oil-Bbl 709 721 14. Attachments: 15. Well Class after proposed work: ExploratoryD 16. Well Status after proposed work: OilŒJ GasD Copies of Logs and Surveys run- Daily Report of Well Operations - ! 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. Contact Garry Catron Printed Name Garry Catron JJ ¿(;;~EB (J 4 2005 Title 10212,10501 None Burst 1490 8290 11200 7240 5210 6870 Collapse 470 7250 11780 5410 2480 4760 Tubing Pressure 700 322 DevelopmentŒ) ServiceD WAG D GINJD WINJD WDSPLD Prepared by Garry Catron (907) 564-4657. Sundry Number or NIA if C.O. Exempt: N/A Phone 564-4657 Production Technical Assistant 1/27/05 Signature Date Form 10-404 Revised 4/2004 RBDMS BFl FEB 0 4 2005 ) 15-41 B DESCRIPTION OF WORK COMPLETED NRWO OPERATIONS EVENT SUMMARY 12/11/04 TIIIO ASSIST SEL. E-LlNE SET IBP. MIT TBG TO 2500 PSI. TBG. PASSED 2500 PSI MIT LOST 50 PSI IN 30 MIN TIO=2000nOO/290 12/13/04 Perforate 10137'-101921 6 SPF FLUIDS PUMPED BBlS I No Fluids Pumped 0 ITOTAl IVED FEB 0 3 2005 E Alaska Oil & Commission Page 1 /" I- ~ 83' 1-14-1/2" X 3-1/2" TBG XO, ID = 2.992" 1 GAS LIFT MANDRELS 39' 1 ST MD TVD DEV TYPE VLV LATCH PORT DATE 1 3577 3237 48 CA-FMHO DV RK 0 01/09/01 3964' ~ L ~ 2 6746 5322 53 CA-FMHO DV RK 0 01/09/01 3 9125 6965 31 CA-FMHO DV RK 0 01/09/01 4 10008 7787 8 CA-FMHO DV RK 0 01/09/01 TREE = 4-1/16" crw 5K ~~.t.~.~.ç>,.~^.. ^ ^... F~~ ACTUATOR = BAKER C kS:äE\ï;" ........ . ..u66.3ï ......."",,,..,,,.m..m.."...'",.., ,,' '.. "....,,,,,,... BF. ELEV = NA .'ROp';;"".".""'^W"'.^^.'^"^^^^^145(f ",,"..., ,.... ....A,.,,,,,,,. "'''''N...",,' ..-.. "..,,,,,. .... .......",,«, Max Angle = 94 @ 11580' "Datum'MO.;' ..".,...,ww"ww...u,w"NiA' """"""'"'''''''''''....~".,.....''''''' .........., "....." "...,."..., ""N'. Datum TVD = 8800' SS 110-3/4" CSG, 45.5#, L-80, ID = 9.953" 1-1 19-5/8" CSG, 47#, L-80, ID = 8.681" 1-1 Minimum ID = 1.995" @ 10268' TOP OF 2-3/8" LN R 13-1/2" TBG, 9.2#, FOX 13-CR-80, ID = 2.992" I.., 10148' 1 SAFETY NOTES: DURING RWO THE 3-1/2" UNIQUE OVERSHOT WAS SPACED OUT TO SWALLOW 3- 1/2" TBGSTUB @ 10170'. DEPTH DISCREPANCY DUE TO E-LlNE VS RIG MEASUREMENT. TOPOF2-3/8"4.7#,STLLNR,ID=1.995"I.., 10268' 1 13-1/2" TBG, 9.2#, L-80, .0087 bpf, ID = 2.992" 1-1 10280' 1 1 7" CSG, 26#, L-80, ID = 6.276" I.., 10438' 1 PERFORA TION SUMMARY REF LOG: SWS MCNL GRlCCL ON 10/08/01 ANGLE AT TOP PERF: 11 @ 10225' Note: Refer to Production DB for historical perf data SIZE SPF INTERV AL Opn/Sqz DA TE 2-1/2" 6 10137 - 10192 0 12/13/04 2-1/4" 6 10225 - 10260 0 11/04/04 1-11/16" 4 12040 - 12363 0 10/09/01 1-11/16" 4 12401 - 12704 0 10/09/01 1-11/16" 4 12714 - 12720 0 10/09/01 I 5" LNR, 15#. 13-CR-80, ID = 4.408" 1-1 11150' 1 DATE 11/12/94 08/09/94 01/04/01 03/05/01 1 0/09/01 OS/24/01 10/15/01 REV BY COMMENTS ORIGINAL COM PLErION RWO RWO ABORTED SIDErRACK CTD SIDErRACK CHITP CORRECTIONS CHltlh CORRECTIONS 15-41 B SAFE. '..)TES: WELL ANGLE> 70° @ 10970' & > 90° @ 11169'. NOTE: NO SSSVN / LANDING NIP WERE RUN @ THE NORMAL +/- 2000' DEPTH. NOTE: DRIFr RESTRICTION THRU TOL, 1-11/16" LOGGING TOOLS WOULDN'T PASS OS/23/03 - CHROME LNR& TBG I i I 10080' 1"'3-1/2" HES X NIP, ID = 2.813".,1 Z :g I 10102' 1-17" X 4-1/2" BAKER S-3 PKR, ID = 3.875" 1 r J I 10127' 1"3-1/2" HES X NIP, ID = 2.813" 1 I 10170' 1-1 CHEM CUT TBG STUB - 12/23/00 1 I 10156' 1-13-1/2" UNIQUE OVERSHOT, ID = 3.625" 1 ~ 10212' 1-12-1/2" BAKERIBPSET12/11/04 1 r)s 1 10207' 1-13-1/2" X 4-1/2" XO, ID = 2.992" 1 I 10210' 1--i7" X 4-1/2" BAKER SABL-3 PKR, ID = 3.875"1 1 10214' 1-14-1/2" X 3-1/2" XO, ID = 2.992" 1 D 1 ~-¡ I 10245' 1-13-1/2" OTIS X NIP, 10 = 2.813" 1 I 10265' 1-12.70" BKR DEPLOYMENT SLV, ID = 2.250" 1 I 10267' 1-13-1/2" PARKER SWN NIP, ID = 2.750" 1 :8 :8 I 10270' 1-17" X 5" Trw LNRlHGRlPKR 1 I I 10281' 1"3-1/2" TTWLEG 1 ~ .. I 10276' 1-1 ELMD TT LOGGED 09/12/01 1 lEI I 10515' 1-11.69" BAKER IBP SET 10/20/04 1 5" SIDETRACK WINDOW ( 15-41B) 10695' - 10705' (OFF CMT RAMP) * NOTE: PRE -15-41 B SDTRK WELLBORE NOT SHOWN ON THIS DIA GRAM. . \/F RECEI , ",,<w 0 3 2005 .4 ~ 12-3/8" LNR, 4.7#, L-80, .0039 bpf, ID = 1.995" 1-1 12777' 1 DA TE REV BY COMMENTS OS/23/03 SRBITP ADD SAFETY NOTE 06/13/03 CMOITLP KB ELEVATION CORRECTION 09/12/03 CMOITLP DATUM MDITVD CORRECTIONS 10/20/04 LDKlTLP SET IBP 11/04/04 MDClTLP ADD PERFS 12/11-13/04 JNAITLP IBP, ADD PERF PRUDHOE BAY UNIT WB..L: 15-41B PERMIT No: 2011460 API No: 50-029-22492-02 SEC 22, T11 N, R14E, 1474' SNL & 4566' FB.. . BP Exploration (Alaska) ~) STATE OF ALASKA ) "-",, ALASKA Oil AND GAS CONSERVATION COMMISSJ'~f*r ' REPORT OF SUNDRY WELL OPERAl\,',ONS 2. Operator BP Exploration (Alaska), Inc. Name: 3. Address: P.O. Box 196612 Anchorage, Ak 99519-6612 7. KB Elevation (ft): 1. Operations Performed: Abandon 0 Alter Casing D Change Approved Program D 66.25 8. Property Designation: ADL-0028306 11. Present Well Condition Summary: Total Depth Repair Well 0 PluQ Perforations[KJ Pull Tubing 0 Perforate New Pool D Operation Shutdown 0 Perforate [K] Stimyt~\~¡~p OtherO w¿ìt'èrD Time ExtensionO Re-enter Suspended Well 0 5. Permit to Drill Number: 201-1460 6. API Number 50-029-22492-02-00 4. Current Well Class: Development ]] ExploratoryD Service D Stratigraphic D 9. Well Name and Number: 15-41 B 10. Field/Pool(s): Prudhoe Bay Field / Prudhoe Oil Pool measured 12777 feet Effective Depth true vertical 8799.9 feet Size 20" 91.5# H-40 2-3/8" 4.7# L-80 5" 15# 13CR80 7" 26# L-80 10-3/4" 45.5# L-80 9-5/8" 47# L-80 Plugs (measured) 10501 Junk (measured) None MD TVD Burst Collapse 36 116 36.0 - 116.0 1490 470 10265 - 12777 8106.1 - 8799.9 11200 11780 10270 - 10695 8111.0 - 8529.3 8290 7250 34 - 10438 34.0 - 8276.3 7240 5410 35 39 35.0 - 39.0 5210 2480 39 - 3964 39.0 - 3558.1 6870 4760 measured 10501 feet true vertical 8338.5 feet Casing Conductor Liner Liner Production Surface Surface Length 80 2512 425 10404 4 3925 Perforation decth: Measured depth: 10225 -10240,10240 -10260 True vertical depth: 8066.75 - 8081.48, 8081.48 - 8101.13 Tubing ( size, grade, and measured depth): RBDMS BFL NOV 3 0 2004 4-1/2" 12.6# 13Cr80 @ 30 3-1/2" 9.2# 13Cr80 @ 113 4-1/2" 12.6# 13Cr80 @ 10118 3-1/2" 9.2# 13Cr80 @ 10126 4-1/2" Baker S-3 Hydro Set Packer 4-1/2" Baker SABL-3 Packer 5" TIW Liner Top Packer 113 10118 10126 10174 @ 10120 @ 10210 @ 10270 Packers & SSSV (type & measured depth): 12. Stimulation or cement squeeze summary: Intervals treated (measured): Treatment descriptions including volumes used and final pressure: Recresentative Daily Average Production or Injection Data Gas-Met Water-Bbl Casing Pressure 1~2 4 Well Shut-In 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. Contact Garry Catron Printed Name Garry Catron )1~ 6~. Form 10-404 Revised 4/2004 13 Prior to well operation: Subsequent to operation: 14. Attachments: Copies of Logs and Surveys run - Daily Report of Well Operations - ! Signature SCANNED DEC 0 2 2004 Oil-Bbl 700 Tubing Pressure 438 830 15. Well Class after proposed work: ExploratoryD 16. Well Status after proposed work: Oil Œ] GasD DevelopmentŒ] Service D WAG D GINJD WINJD WDSPLD Prepared by Garry Catron (907) 564-4657. Sundry Number or N/A if C.O. Exempt: NIA Title Production Technical Assistant ~h~", ,.e ,'Q64::4657 j ¡ . -... -~. ;' '\ ~\.,~-"""", Date 11/29/04 -) ') 15-41 8 DESCRIPTION OF WORK COMPLETED NRWO OPERATIONS EVENT SUMMARY 10/20/04 Set IBP @ 105151 MD Mid-element depth 11/03/04 PERFORATED 20' OF PUT RIVER FROM 102401-102601 WITH 2.25" HSD 6SPF PJ 2306 60DEG PHASED GUN. TAGGED LINER TOP AT 102741. JOB IN PROGRESS. WSR CONTINUED ON 11-04-04. 11/04/04 PERFORATED 151 OF PUT RIVER FROM 102251-102401 WITH 2.25" HSD 6SPF 60 DEG PHASED PJ 2306 CHARGES. JOB COMPLETE. PAD OPERATOR AND ASRC NOTIFIED TO POP WELL. FLUIDS PUMPED BBLS No Fluids Pumped 0 ITOTAL Page 1 TREE = 4-1/16" CrN 5K 'O{ELL.HEM~ = FMC ACTuATOR ;;""" šÄKËRc 'Kä:'ELÐT; " '" " """""66:3;' "sF: 'ECBi";;' ""NÄ 'k.Op,;;",,,,,w,,,,,,,.mww,,mw,w""'W1'¡5õ; . .m, . "'''~ .""......' ... , .......u..~u.~..« 0<.«.. ..........u........ Max Angle = 94 @ 11580' bâtuñ1'Kìïb'; "w"''''''ÑÏA 'oatuffiTVÓ;'" ", '¿äöëYss ") /' 110-3/4" CSG, 45.5#, L-80, ID = 9.953" I., 39' 1 19-5/8" CSG, 47#, L-80, ID = 8.681" I., 3964' ~ Minimum ID = 1.995" @ 10268' TOP OF 2-3/8" LNR 13-1/2" TBG, 9.2#, FOX 13-CR-80, ID = 2.992" I., 10148' 1 SA FElY NOTES: DURING RWO THE 3-1/2" UNIQUE OVERSHOT WAS SPACED OUT TO SWALLOW 3-1/2" TBG STUB @ 10170'. DEPTH DISCREPANCY DUE TO E-LlNEVS RIG MEASUREMENT. I TOP OF 2-3/8" 4.7#, STL LNR, ID = 1.995" I., 10268' 1 I 3-1/2" TBG, 9.2#, L-80, .0087 bpf, ID = 2.992" I., 10280' 1 17" CSG, 26#, L-80, ID = 6.276" I., 10438' 1 ÆRFORA TION SUMMARY REF LOG: SWS MCNL GRlCCL ON 10/08/01 ANGLE AT TOP ÆRF: 11 @ 10225' Note: Refer to Production DB for historical perf data SIZE SPF INTERV AL Opn/Sqz DA TE 2-1/4" 6 10225 - 10260 0 11/04/04 1-11/16" 4 12040 - 12363 0 10/09/01 1-11/16" 4 12401 - 12704 0 10/09/01 1-11/16" 4 12714 - 12720 0 10/09/01 I 5" LNR 15#, 13-CR-80, ID = 4.408" I., 11150' 1 DATE 11/12/94 08/09/94 01/04/01 03/05/01 10/09/01 OS/24/01 10/15/01 COMMENTS ORIGINAL COM PLETION RWO RWO ABORTED SIDETRACK CTD SIDETRACK CH/TP CORRECTIONS CHltlh CORRECTIONS DATE OS/23/03 06/13/03 09/12/03 10/20/04 11/04/04 REV BY COMMENTS SRBITP ADD SAFElY NOTE CMOITLP KB ELEVATION CORRECTION CMOITLP DATUM MDnvD CORRECTIONS LDKlTLP SET IBP MDCITLP ADD ÆRFS REV BY 15-41 B \ I- ' L SAFE )OTES: WELL ANGLE> 70° @ 10970' & > 90° @ 11169'. NOTE: NO SSSVN / LANDING NIP WERE RUN @ THE NORMAL +/- 2000' DEPTH. NOTE: DRIFT RESTRICTION THRU TOL, 1-11/16" LOGGING TOOLS WOULDN'T PASS OS/23/03 - CHROME LNR & TBG 83' ~ ST MD TVD 1 3577 3237 2 6746 5322 3 9125 6965 4 10008 7787 I I I 10080' Z ~ I 10102' r ~ I 10127' I 10170' 1 10156' ~ 10207' 8( )8 I 10210' I 10214' 1 t~J 8 8 / ~ IE!I ~ ~ .. I 10245' I 10265' 1 10267' I 10270' I I 1 1"3-1/2" OTIS X NIP, ID = 2.813" 1 1"2.70" BKR DEPLOYMENT SLV, ID = 2.250" 1 1--13-1/2" PARKER SWN NIP, ID = 2.750" 1 I., 7" X 5" TrN LNRlHGRlPKR 1 10281' I., 3-1/2" TT WLEG 1 10276' I., ELMD TT LOGGED 09/12/01 1 10515' I., 1.69" BAKER IBP SET 10/20/04 I 1"4-1/2" X 3-1/2" TBG XO, ID = 2.992" 1 GAS LIFT MANDRELS DEV TYÆ VLV LATCH 48 CA-FMHO DV RK 53 CA-FMHO DV RK 31 CA-FMHO DV RK 8 CA-FMHO DV RK PORT DATE 0 01/09/01 0 01/09/01 0 01/09/01 0 01/09/01 I., 3-1/2" HES X NIP, ID = 2.813" 1 I., 7" X 4-1/2" BAKER S-3 PKR, ID = 3.875" 1 1-i3-1/2" HESXNIP, ID=2.813" 1 1-1 CHEM CUT TBG STUB - 12/23/00 1 I., 3-1/2" UNIQUE OVERSHOT, ID = 3.625" 1 I., 3-1/2" X 4-1/2" XO, ID = 2.992" 1 I., 7" X 4-1/2" BAKER SABL-3 PKR, ID = 3.875" 1 1"4-1/2" X 3-1/2" XO, ID = 2.992" 1 5" SIDETRACK WINDOW ( 15-41B) 10695' - 10705' (OFF CMT RAMP) * NOTE: PRE -15-41 B SDTRK WELLBORE NOT SHOWN ON THIS DIAGRAM. 12-3/8" LNR, 4.7#, L-80, .0039 bpf, ID = 1.995" l-i 12777' I PRUDHOE BAY UNIT WELL: 15-41 B ÆRMITNo: 2011460 API No: 50-029-22492-02 SEC 22, T11N, R14E, 1474' SNL & 4566' FEL BP Exploration (Alas.~~) Permit to Drill MD 12777 --- -~ ----- q N () V ~ G- Q) ~ DATA SUBMITTAL COMPLIANCE REPORT 11/10/2003 2011460 Well Name/No. PRUDHOE BAY UNIT 15-41B Operator BP EXPLORATION (ALASKA) INC Sþ~¿ / ÒC} ~ I API No. 50-029-22492-02-00 TVD Completion Date 10/9/2001./' Completion Status 1-01L Current Status 1-01L UIC N 8800 "' REQUIRED INFORMATION Mud Log No Samples No Directional Survey ~ - f ~~ - DATA INFORMATION -- -, Types Electric or Other Logs Run: Well Log Information: Log/ Data Digital Type Med/Frmt ! ED C ¡ ¡ED D ; ¡ED D ; , ! Rpt I Electr Dataset Number Log Log Run Scale Media No final (data taken from Logs Portion of Master Well Data Maint) "-h Interval OH / Start Stop CH Received 10157 12738 Case 11/27/2001 Comments -------- - 1 1 ~21 ~O cYì721 1 10611 10600 12278 Open 4/4/2002 10611 12777 Open 4/18/2002 12278 Open 4/4/2002 Well Cores/Samples Information: Name Interval Start Stop Received Sent ADDITIONAL INFORMATION Well Cored? Y~ Chips Received? ~ Analysis Received? Daily History Received? Formation Tops ~ _m__-_-- -- Sample Set Number Comments G)N ØN _. -- -- Comments: ~ tM~i-";" V'-ß~'I"'\.~. ~ o...w----- ~ IV\. D ~ 1-' V t:) ~ ~~ M.-ß ~ ,\v~ \!;) 'ß \ c.Qv-"lM.J~\"l rJ~i-~v- \"} ?5 () èJ; Å~ ~ \ -----,- 1~ ~ Compliance Reviewed By: Date: / Ò ~~-~-~ ( " ~,. II ~t~".*::~-í~ '----"::::'::"""':~:::___'_'..n__n- ¡:'~~;~l1.,!,;"... -. - ~ .. ...... :.."'~:r ~'~' '" Transmittal Form " "" II~~.. ;'"!!!'~"'h_.~_......'~n..."'~""~" ,-- .- - ." .. ... BAKER HUGHES Baker Atlas Canada GEOSciences Centre ¡ :-. .,;" ';:" ., -. ~_. ~.' ..... --...u ::-.~"- ¡ ~ :~;[ ! ¡ ~n~, " ; n ;~, ~ ¡ ~n¡ ! : ¡po, ~ ¡ ~nr -.." ¡ ¡ i~ ~~, í ¡ !~ g¡ ~ : itS;, j ; iš Hi j ¡ IH~: ,....~, i ¡ í! ill II ¡ ~¡!!' , : !q:! ~ ¡ ih~! 1 : ~t ~,:! \ i ~i sit ~ ¡ iH¡¡ -~"-, ¡ : t.:£; t ¡ It~, I ~ ¡ ih~l i ¡ :H~i i ¡ in,~I' . . ~,.. ~-.:' ~. .;:,~ ~5$ "Ì .' :¡ i ,::""""1:;'::',':';,:¿:::",::"",::,¡ To: State of Alaska, Alaska Oil & Gas Conservation Commission 333 West ih Avenue, Suite 100 Anchorage, AK 99501 Attention: Lisa Weepie Reference: BP Exploration, Inc. 18-32A Prudhoe Bay Unit~O)-IO1 BP Exploration, Inc. H-07A Prudhoe Bay Unit doU o-/à rg' BP Exploration, Inc.15-41]3:pBIPl"\ldhq~J3ayUnit apl-¡4,l..R B P Exploration, Inc. 4...41.A.:~B2P:rl.ldhoé' B ayU nìt~bO-L0¡5 BP Exploration, Inc.O5-14BPruâhoelBáyUnìtQOl-,< IKo BP Exploration, Inc.,O5-28A PIlldhoe:ßayUnitaO1-19S , ~ , Contains the following For Bachar The Above Wells: 1 - LAS Format disk "';2"""F'l ",' , , ~ ' , ' ,:"".'lm,s,;~"..' "",,"','" ,',:,,',' ':,",' ",",i:r~L:"~~~~~'~~Pijn~ " '" .':'" ,., ,: ; i i ;"'" !_. -_-.J . ." ,. .... ........-.. -, :~.l"""""".:_' -'--..::~: r::-:~~~._. .." .. . -- .- ----- . .' . ,.. --.---. --- ...-----_.-- == :: ... , . -0- . , . . . . . .---.. ..-..-.-..-- ..-.-." , .. - ; ""~;;,~.:~~~~~'~~:-~:~.-;: ~~~ ~~~.: ~~~f~:~~-~:::: ~.;.- .---'------ ~, (.~~--- ~!~: .(~- ¡ '---~¿~-~ .~ :-:-'--~.;-:-:--:-:-' ....., """"'" ::t-::-:=-.: ':"::'":,-",,-'.....::::' :r:~ ::'::::-:-:::-.:::\.~~::: ::::: R~~~;VED~;~ ~-'.\ . _.: s~:;~:~.::: _::::~~:: --::.:.:.::"" -----":"':"":':::.....---.. ÞPR D 4 2002 ~t~-~~~; PLEASE ACKNOWLEDGE RECEIPT BY SIGNIN~M~.~~-~: :....~~_:~:--. OR::;!~~3~~~~7~~PY Ancltorage 1=]1. .." i #:300~:O~~~t~~:. s.w.~"I.. ...__i3 Calgary, :z~e:c~' Canada I ,..~~~ Direct: (403) 537-3752 f~'" FAX: (403) 537-3767 Sent By: Josef Berg Received By: ¿~ ~ì 11 /21 /01 Scbllnberger NO. 1638 Alaska Data & Consulting Services 3940 Arctic Blvd. Suite 300 Anchorage. AK 99503-5711 ATTN: Sherñe Company: state of Alaska Alaska 011 & Gas Cons Comm Aftn: LIsa Weeple 333 West 7th Ave, Suite 100 Anchorage, AK 99501 Field: Prudhoe Bay,Nlakuk ~. Well Job # Log Description Date Blueline Sepia Color Prints CD G-19A I~ :'1;;;-1 O~ MEM PROD PROFILE 11/07/01 1 1 N-4A I~ 5-{&:'-; PROD PROFILEIDEFT/GHOST 11/16/01 1 1 D-04A Ill. 7-1 ~ ~c:;' 21461 RST 10/22/01 1 1 1 D.S. 15-41 B é)..OJ-ll '" 21471 MCNL 10/08/01 1 1 1 D.S. 16-Q5A -:2 ()J- /J J () 21475 MCCL (PDC) 03/07/01 1 .-~, PLEASE ACKNOWLEDGE RECEIPT BY SIGNING AND RETURNING ONE COpy EACH TO: Dote Delivered: RECE\VED NOV 2. 7 2001 ~ s. c;omrntss to ' ~ Schlumberger GeoQuest 3940 Arctic Blvd. Suite 300 Anchorage. AK 99503-5711 ATTN: Sherrie Receivð~/A a-'fJ_- J BP Exploration (Alaska) Inc. Petrotectnical Data Center LR2- 1 900 E. Benson Blvd. Anchorage. Alaska 99508 1. Status of Well 181 Oil 0 Gas 0 Suspended 0 Abandoned 0 Service 2. Name of Operator 7. Permit Number BP Exploration (Alaska) Inc. 201-146 3. Address 8. API Number P.O. Box 196612, Anchorage, Alaska 99519-6612 50-029-22492-02 4. Location of well at surface - .";'-~:\i-) 9. Unit or Lease Name 1476' SNL, 710' EWL, SEC.22, T11 N, R14E, UM. ~ ..' 'ìœAl1ONì Prudhoe Bay Unit At top of productive interval ' .LQ.:~q~-tl,-L : 3079' NSL, 362' EWL, SEC. 15, T11N, R14E, UM \ ..; :;~ \" ~ ~ ' 10. Well Number At total depth if)..... ~. ~"', ' 2577' NSL, 969' EWL, SEC. 15, T11 N, R14E, UM;:~-:-~,~.:"-,: .~«~. fit . ~. 11. Field and Pool 5. Elevation in feet (indicate KB, DF, etc.) 6. Lease Designation and Serial No. Prudhoe Bay Field / Prudhoe Bay Pool KBE = 66.25' ADL 028306 12. Date Spudded 13. Date T.D. Reached 14. Date Comp., Susp., or Aband. 10/1/2001 10/6/2001 10/9/2001 17. Total Depth (MD+TVD) 18. Plug Back Depth (MD+TVD) 19. Directional Survey 12777 8800 FT 12742 8799 FT 181 Yes 0 No 22. Type Electric or Other Logs Run MWD, GR, ROP, Memory CNL, CCL 23. CASING SIZE 20" 10-3/4" x 9-5/8" WT. PER FT. 91.5# 47# 26# 15# 4.7# 7" 5" 2-3/8" f STATE OF ALASKA ( ALASKA ùlL AND GAS CONSERVATION COMMI5SION WELL COMPLETION OR RECOMPLETION REPORT AND LOG Classification of Service Well 15-41 B 15. Water depth, if offshore 16. No. of Completions N/ A MSL One 20. Depth where SSSV set 21. Thickness of Permafrost None MD 1900' (Approx.) GRADE H-40 L-80 L-80 13Cr80 L-80 CASING, LINER AND CEMENTING RECORD SETTING DEPTH HOLE Top BOTTOM SIZE CEMENTING RECORD Surface 110' 30" 60 sx Arctic Set (Aoorox.) Surface 3964' 12-1/4" f44 sx PF 'E' 375 sx PF 'C' Surface 10438' 8-1/2" 307 sx Class 'G' 10270' 10706' 6" 112 sx Class 'G' 10265' 12777' 3" 98 sx Class 'G' AMOUNT PULLED 24. Perforations open to Production (MD+ TVD of Top and Bottom and interval, size and number) 1.56" Gun Diameter, 4 spf MD TVD 12040' - 12363' 8793' - 8804' 1240 l' - 12704' 8803' - 8797' 12714' - 12720' 8797' - 8798' PRODUCTION TEST Method of Operation (Flowing, gas lift, etc.) Flowing PRODUCTION FOR OIL-BBL TEST PERIOD Flow Tubing Casing Pressure CALCULATED OIL-BBL GAs-McF WATER-BBL OIL GRAVITY-API (CORR) Press. 24-HoUR RATE 28. CORE DATA ----;~.~ ." Brief description of lithology, porosity, fractures, apparent dips and presence of oil, gas or water. Submit core1iCt:l.:!:.! V" '. ~ 27. Date First Production October 18, 2001 Date of Test Hours Tested Form 10-407 Rev. 07-01-80 25. TUBING RECORD SIZE DEPTH SET (MD) 3-1/2",9.2#, 13Cr80 10156' 3-1/2",9.3#, L-80 10281' 26. ACID, FRACTURE, CEMENT SQUEEZE, ETC. DEPTH INTERVAL (MD) AMOUNT & KIND OF MATERIAL USED 2000' Freeze Protected with MeOH MD TVD PACKER SET (MD) 10102' 10210' GAs-McF WATER-BBL CHOKE SIZE GAS-OIL RATIO NOV 1 9 2001 Alaska Oil & Gas Cons. Commission Anchorage , , oa Iq YlOL- NOV 2, 2001 Submit In Duplicate G~ Ø3~ ,( " :( 29. Geologic Markers 30. Formation Tests Marker Name Measured Depth True Vertical Depth Include interval tested, pressure data, all fluids recovered and gravity, GOR, and time of each phase. Zone 1 B 11773' 8760' Zone 1A 11973' 8785' RECEIVED NOV 1 9 2001 Alaska Oil & Gas Coos. Commission Anchorage 31. List of Attachments: Summary of Daily Drilling Reports, Surveys 32. I hereby certify that the foregoing is true and correct to the best of my knowledge Signed Terrie Hubble 4AAi1Htl ~ Title Technical Assistant Date 1(-[9. Of 15-41 B Well Number 201-146 Permit No. / Approval No. Prepared By Name/Number: Terrie Hubble, 564-4628 INSTRUCTIONS GENERAL: This form is designed for submitting a complete and correct well completion report and log on all types of lands and leases in Alaska. ITEM 1: Classification of Service Wells: Gas injection, water injection, steam injection, air injection, salt water disposal, water supply for injection, observation, injection for in-situ combustion. ITEM 5: Indicate which elevation is used as reference (where not otherwise shown) for depth measurements given in other spaces on this form and in any attachments. ITEM 16 AND 24: If this well is completed for separate production from more than one interval (multiple completion), so state in item 16, and in item 24 show the producing intervals for only the interval reported in item 27. Submit a separate form for each additional interval to be separately produced, showing the data pertinent to such interval. ITEM 21: Indicate whether from ground level (GL) or other elevation (DF, KB, etc.). ITEM 23: Attached supplemental records for this well should show the details of any multiple stage cementing and the location of the cementing tool. ITEM 27: Method of Operation: Flowing, Gas Lift, Rod Pump, Hydraulic Pump, Submersible, Water Injection, Gas Injection, Shut-In, Other-explain. ITEM 28: If no cores taken, indicate 'none'. Form 10-407 Rev. 07-01-80 (' (' Well: Field: API: Permit: 15-41 B Prudhoe Bay Unit 50-029-22492-02 201-146 Rig Accept: Rig Spud: Rig Release: Drilling.£!!.g: 09/21/01 10/01/01 10/09/01 Nordic #1 "--"n-'n__-'._---".--".'--",-,'.,-,'_..---n-.._.---.-.-............-.......-...-... -----.-... --------...-........-..-...".--..-----,,---.-_..._...n__... - ..' .... ..-""--'--"" ......- -........-....--.--..- ...---........---....-. .....---..-....-....-..--....--..- .... ...........--....-...--..- PRE-RIG WORK 08123/01 MITOA to 2000 psi, failed. 09/10/01 MITIA to 3000 psi, passed. Perform step rate test on tubing. 09/12/01 Tag top of coil fish at 10707' slm. 09/16/01 Make up inflatable cement retainer with 2-5/8" bottom guide. Well head pressure is 2440 psi. Lead in with 10 bbls 50/50 Methanol and pump 150 bbls 2% KCL to kill. Run in hole with 2.5" retainer. 09/17/01 Tag top of fish at 10748' ctm. Pick up to 10738', drop Y2" ball and set retainer. Pump 5 bbls of 17 ppg Class 'G' cement below retainer, 5 bbls on top. Clean out to 10620' MD. Jet out at 80%, washing all GLM's. Freeze protect from 2500' with Methanol and water. t " ( BP EXPLORATION Page 1 - Operations Summary Report Legal Well Name: 15-41 Common Well Name: 15-418 Spud Date: 7/22/1994 Event Name: REENTER+COMPLETE Start: 9/21/2001 End: 10/9/2001 Contractor Name: NORDIC CALISTA Rig Release: 10/9/2001 Rig Name: NORDIC 1 Rig Number: '. Date. From": To Hours . Activity Code NPT Phase Descri ption of Op;erations 9/21/2001 15:30 - 17:30 2.00 RIGU P PRE ACCEPT NORDIC 1 ON DS 15-41B AT 15:30 HRS, 09/21/01. BERM AND SPOT TANKS, N/U BOPE. GENERAL RIG UP. 17:30 - 23:00 5.50 BOPSUF P DECOMP PERFORM INITIAL BOPE PRESS / FUNCTION TEST. SEND REPORT TO AOGCC. 23:00 - 00:00 1.00 SlWHIP P WEXIT CUT OFF BKR CTD. DRESS AND WELD ON DS CT CONNECTOR 9/22/2001 00:00 - 00:30 0.50 SlWHIP P WEXIT WELD ON 2" CT CONNECTOR 00:30 - 01 :30 1.00 SlWHIP P WEXIT M/U BHI MWD MILLING BHA WITH 1.75 DEG MOTOR, 2.8" PILOT MILL 01:30 - 02:15 0.75 SlWHIP N DFAL WEXIT ,RIH AND SHALLOW TEST TOOLS, SPERRY ORIENTER FAILED. 02:15 - 02:45 0.50 SlWHIP N DFAL WEXIT POOH TO CHANGE OUT ORIENTER 02:45 - 03:15 0.50 SlWHIP N DFAL WEXIT CHANGE OUT ORIENTER 03:15 - 05:30 2.25 SlWHIP P WEXIT RIH, SHALLOW TEST OK, CONT. TO RIH. 05:30 - 06:30 1.00 SlWHIP P WEXIT MILL OUT 3 1/2" SWN NIPPLE TO 2.80". RIH. 06:30 - 07:30 1.00 SlWHIP P WEXIT LOG TIE-IN WTIH GR ADD 2.5 FT CTD. 07:30 - 08:00 0.50 SlWHIP P WEXIT ORIENT TF TO 270 DEG. 08:00 - 09:30 1.50 SlWHIP P WEXIT TAG CMT AT 10,617 FT BKB. MILL CMT AT 40 FPH, 1500 woe, TO 10,685 FT AT 270 DEG. 09:30 - 09:40 0.17 SlWHIP P WEXIT ORIENT TF TO 90R AND MILL 4.5 FT CMT TO 10,689.4 FT BKB. FLAG CT AT 10,500 FT EOP. 09:40 -11:30 1.83 SlWHIP P WEXIT POOH FOR WINDOW MILL AND MOTOR. 11 :30 - 12:20 0.83 SlWHIP P WEXIT MIU 2.5 DEG FIXED BEND MOTOR AND 2.80" DIA WINDOW MILL 12:20 - 14:20 2.00 SlWHIP P WEXIT RIH WITH MILLING BHA #2, 2.5 DEG MOTOR AND 2.8" WINDOW MILL. ADD 4 FT CTD AT FLAG. 14:20 - 15:10 0.83 SlWHIP P WEXIT ORIENT TF TO 80R. 15:10 - 16:30 1.33 SlWHIP P WEXIT TAG CMT AT 10687.4, CORRECT TO 10,689.4 FT. PICK UP 1 FT. -START TIME MILLING AS PER PROCEDURE AT 10,688.4 FT. TF = 80 DEG R. 1.9 BPM, 3300 PSI, 16:30 - 17:45 1.25 SlWHIP P WEXIT MILLING AT 10688.6 FT. TF = 90R, 1.8 BPM, 3200 PSI, MILLED TO 10,688.8 FT. 17:45 - 18:30 0.75 SlWHIP P WEXIT MILLING, TF = 90 R, 1.8 BPM, 3200 PSI, MILL TO 10689.1 18:30 - 20:00 1.50 SlWHIP P WEXIT MILLING, TF:84R, 1.8/3315 PSI, MILL TO 10689.4' 20:00 - 21 :00 1.00 SlWHIP P WEXIT MILLING, TF:81R, 1.8/3250 PSI, 200-300#WOB, MILL TO 10689.7' 21 :00 - 22:00 1.00 SlWHIP P WEXIT MILLING, TF:86R, 1.8/3300 PSI, 500-800# woe, MILL TO 10689.9' 22:00 - 23:00 1.00 SlWHIP P WEXIT MILLING, TF:86R, 1.8/3250 PSI, 1200-1500# woe, MILL TO 10690.2' 23:00 - 00:00 1.00 SlWHIP P WEXIT MILLING, TF:86R, 1.8/3250 PSI, 1200-1500#WOB, MILL TO 10690.7' 9/23/2001 . 00:00 - 01:00 1.00 SlWHIP P WEXIT MILLING, TF:84R, 1.8/3250 PSI, 1000-1500#WOB, MILL TO 10691.5' 01:00 - 02:15 1.25 SlWHIP P WEXIT MILLING, TF:93R, 1.8/3450 PSI, 1500-1700#WOB, MILL TO 10692.4' END OF TIME SEQUENCE Printed: 10/1512001 12:45:12 PM (' (- BP EXPLORATION Page 2 4I8t Operations Summary Report Legal Well Name: 15-41 Common Well Name: 15-41 B Spud Date: 7/22/1994 Event Name: REENTER+COMPLETE Start: 9/21/2001 End: 10/9/2001 Contractor Name: NORDIC CALISTA Rig Release: 10/9/2001 Rig Name: NORDIC 1 Rig Number: , . Date From-To Hours Activity Code NPT Phase. Description of Operations .. ... 9/23/2001 02:15 - 02:45 0.50 STWHIP P WEXIT BEGIN INCREASING WOB TO 4K#. 300 DPSI TF:86R MILL TO 10693.6' 02:45 - 03:15 0.50 STWHIP P WEXIT MILLING, TF:103R, 1.8/3350 PSI, 4000-5000# WOB, MILL TO 10694.6' 03:15 - 03:45 0.50 STWHIP P WEXIT APPEAR TO HAVE POPPED THROUGH LINER AT 10695'. TF BACK TO 85R. 03:45 - 06:00 2.25 STWHIP P WEXIT MILL AHEAD TO 10705'. EVIDENCE OF FORMATION ON SHAKER. 06:00 - 07:30 1.50 STWHIP P WEXIT POOH. ORIGINAL EOP FLAG NOW AT 10502'. (FADED WHITE). CONTINUE TO POOH. 07:30 - 08:00 0.50 STWHIP P WEXIT UO MOTOR AND MILL #2. MILL=2.79" OD. M/U 1.75 DEG MOTOR AND 2.79" CRA YOLA MILL 08:00 - 10:00 2.00 STWHIP P WEXIT RIH WITH MILLING BHA #3. SHALLOW TEST TOOLS. RIH. ON DEPTH AT FLAG AT 10502' EOP. 10:00 - 11 :00 1.00 STWHIP P WEXIT ORIENT TF TO 90R. TIED-IN WITH GR AT 10541 FT. ADDED 9 FT TO CTD. 11:00 -13:00 2.00 STWHIP P WEXIT WEDGE CRAYOLA MILL AT 10,693 FT. CTD. TOP OF WINDOW AT 10,690 FT. REAM DOWN. SEVERAL STALLS. TF = 80R. STALLING ON BOTTOM END OF WINDOW. SEVERAL STALLS. WEDGING LONG TAPER MILL AT BOTTOM OF WINDOW ON STEEL NO MOTOR WORK BEFORE STALLS. 13:00 - 14:00 1.00 STWHIP P WEXIT REAMING AT 10694 FT. SWAP WELL TO NEW FLOPRO. FULL RETURNS. SEVERAL QUICK STALLS. SLOW PROGRESS. 14:00 - 14:30 0.50 STWHIP P WEXIT LOOSING RETURNS. 50% RETURNS AFTER FLOPRO REACHED SURFACE. HAD FULL RETURNS WITH BIOZAN. EXTRA ECD OF FLOPRO APPARENTLY CAUSED FLUID LOSS AT WINDOW. NO PROGRESS. 14:30 - 16:15 1.75 STWHIP N DPRB WEXIT POOH FOR SMALLER OD CRA YOLA MILL 16:15 -17:00 0.75 STWHIP N DPRB WEXIT CHANGE BATTERIES IN BHI TOOLS. REPLACE 2.79" OD CRAYOLA MILL WITH 2.70" OD CRAYOLA MILL 17:00 - 19:15 2.25 STWHIP N DPRB WEXIT RIH WITH MILLING BHA #4. 1.75 DEG MOTOR AND 2.70" CRAYOLA MILL SHALLOW HOLE TEST. RIH. 19:15 - 19:45 0.50 STWHIP N DPRB WEXIT LOG GR TIE IN FROM 10550'. ADD l' CORRECTION. 19:45 - 20:30 0.75 STWHIP N DPRB WEXIT ORIENT TO 90R. 20:30 - 21 :30 1.00 STWHIP N DPRB WEXIT REAM WINDOW IN DOWN PASS, TF:110R. SEVERAL STALLS AT 10695'. PU & WORK THROUGH. BACK REAM AT 1'/MIN. ABLE TO RUN THRU DRY. 21 :30 - 22:30 1.00 STWHIP N DPRB WEXIT ORIENT 1 CLICK. BACK REAM AT 1'/MIN.D 22:30 - 00:00 1.50 STWHIP N DPRB WEXIT PUMP 30 BBLS 10 PPB LCM (MIX-2). SQUEEZE AWAY AT 0.5 BPM, MAX PRESSURE 1050 PSI. SHUT-IN PRESSURE DROPPED SLOWLY AFTER 30 BBLS SQUEEZED. ESTABLISH CIRCULATION. 1.5IN/0.5 OUT 9/24/2001 00:00 - 01 :45 1.75 STWHIP N DPRB WEXIT MIX 15 BBLS 20 PPB MIX-2 LCM. DISPLACE WITH FLOPRO. SHUT-IN WELL AND SQUEEZE. MAX PRESSURE 850 PSI. BEGIN CIRCULATING. 1.5IN/0.6 OUT. NOT MUCH CHANGE. 01 :45 - 03:30 1.75 STWHIP N DPRB WEXIT POOH FOR CEMENTNG ASSY. Printed: 10/1512001 12:45:12 PM { 1(' \ BP EXPLORATION Page 3- Operations Summary Report Legal Well Name: 15-41 Common Well Name: 15-41 B Spud Date: 7/22/1994 Event Name: REENTER+COMPLETE Start: 9/21/2001 End: 10/9/2001 Contractor Name: NORDIC CALISTA Rig Release: 10/9/2001 Rig Name: NORDIC 1 Rig Number: Date From - To Hours Activity Code NPT Phase Description of Operations 9/24/2001 03:30 - 04:30 1.00 SlWHIP N DPRB WEXIT LD MWD & MTR. MU CEMENT STINGER. 04:30 - 07:00 2.50 SlWHIP N DPRB WEXIT RIH WITH CEMENTING ASSY. BHA OAL: 32.85' TAG TD AT 10,701' CTD. CORRECT DEPTH TO 10,705 FT. CIRC KCL WATER AND RECOVER FLOPRO. 1.8 BPM, 0.9 BPM RETURNS. 1520 PSI. 07:00 - 07:15 0.25 SlWHIP N DPRB WEXIT SAFETY MEETING WITH ALL PERSONNEL. REVIEW CEMENTING PROCEDURE AND HAZARDS. 07:15 - 07:50 0.58 SlWHIP N DPRB WEXIT PRESS TEST CMT LINE. FINISH RECOVERING FLOPRO. CMT AT WT AT 07:50 HRS. 07:50 - 09:00 1.17 SlWHIP N DPRB WEXIT STG 13.8 BBLS, 13.8 PPG, G CMT WI 8% BENTONITE DRY BLENDED. PURGE CEMENT LINE. DISPLACE SLURRY WITH RIG PUMPS. CLOSE CHOKE. SOZ 7 BBLS CMT TO FORMATION. FINAL SQZ = 0.2 BPM AT 1670 PSI WHP. LAY IN 7 BBLS CMT. WCTOC = 10,350 FT. CMT IN PLACE AT 08:35 HRS. PULL TO SAFETY AT 10,050 FT. 09:00 - 09:40 0.67 SlWHIP N DPRB WEXIT HOLD SOZ PRESS ON CMT. 09:00, SIWHP = 1000 PSI, HOLD 15 MIN. LOST 150 PSI. 09:15, INC WHP TO 1100 PSI, LOST 90 PSI IN 7 MIN. 09:24, INC WHP TO 1350 PSI, LOST 250 PSI IN 16 MIN. 09:40 -10:10 0.50 SlWHIP N DPRB WEXIT RIH AND JET OUT CMT. 10400',2.0 BPM, 1400 PSI, 30 FPM, FULL RETURNS 10600',1.5 BPM, 1420 PSI, 20 FPM, FULL RETURNS 10704',1.5 BPM, 1450 PSI, 20 FPM, ATTD, FULL RETURNS, NO WT LOSS THRU WINDOW. 10:10 -10:30 0.33 SlWHIP N DPRB WEXIT CIRC CONTAMINATED CMT TO SURFACE AT 1.5 BPM. FULL RETURNS. INC RATE TO 2.0 BPM, JET OUT WINDOW AREA AT 2 BPM, NO WT LOSS GOING DOWN THRU WINDOW. 10:30 - 12:00 1.50 SlWHIP N DPRB WEXIT POOH WITH NOZZLE BHA. CMT SAMPLE IN DS LAB UCA AT 11:30 HRS. 12:00 - 13:00 1.00 SlWHIP P WEXIT MIU BHI MWD BHA #6 WITH 2.12 DEG MOTOR AND DPI 2.69" X 3.0" BI-CENTER BIT. NEW BIT. BIT #5. 13:00 - 15:00 2.00 SlWHIP P WEXIT RIH WITH BHA #6 AT 90 FPM, NO PUMP. RIH TO 10,500 FT, 15:00 - 20:00 5.00 SlWHIP N DPRB WEXIT WAIT ON CEMENT, NO COMPRESS STRENGTH IN UCA SAMPLE AT 15:00HR 50 PSI COMPRESS STRENGTH AT 17:45 HRS. SAMPLE IN UCAAT 11:30. CEMENT IN PLACE AT 08:30 HRS. 20:00 - 20:30 0.50 SlWHIP P WEXIT LOG TIE-IN WITH GR. ADD 7 FT TO CTD. 20:30 - 21 :00 0.50 SlWHIP P WEXIT ORIENT TF TO 70R. STOP PUMP. RIH AND EXIT WINDOW AT 10,695' WITH NO WT LOSS, CLEAN WINDOW. TAG TD AT 10,705 FT. 21:00 - 21:30 0.50 DRILL P PROD1 ORIENT TO 50-60R. 21 :30 - 23:30 2.00 DRILL P PROD1 DRILL AHEAD. DISPLACE WELL TO FLOPRO. 1.6 IN/1.4 OUT 3300 PSI FS. DRILL TO 10740'. FORMATION VERY HARD. 23:30 - 00:00 0.50 DRILL P PROD1 DRILL TO 10745'. Printed: 10/1512001 12:45:12 PM ( (' BP EXPLORATION Page 4 .. Operations Summary Report Legal Well Name: 15-41 Common Well Name: 15-41 B Spud Date: 7/22/1994 Event Name: REENTER+COMPLETE Start: 9/21/2001 End: 10/9/2001 Contractor Name: NORDIC CALISTA Rig Release: 10/9/2001 Rig Name: NORDIC 1 Rig Number: ,Date From~To Hours: Activity Code NPT Phase" Description. of Operations 9/25/2001 00:00 - 02:00 2.00 DRilL P PROD1 DRILL AHEAD. 3300/1.6IN/1.3 OUT 10-15 ROP. TF:30-50R ROP VERY SLOW. DRILL TO 10755'. 02:00 - 02:45 0.75 DRILL P PROD1 ORIENT TO 60R. REACTIVE TORQUE AS HIGH AS 270 DEG, MAKING TF DIFFICULT TO HOLD. 02:45 - 04:30 1.75 DRILL P PROD1 DRilL AHEAD TO 10775' 04:30 - 04:45 0.25 DRILL P PROD1 ORIENT TO MAINTAIN 50-60R TF 04:45 - 06:00 1.25 DRilL P PROD1 DRILL AHEAD. 3200 FS/1.5 IN/1.1 OUT TF:55R, ROP:30 FPH. SOME CHERT IN SAMPLES, FREQUENT STALLS WHilE DRilLING. DRILL TO 10791'. 06:00 - 07:30 1.50 DRILL P PROD1 DRilLING, TF = 70R, 1.6/1.3 BPM, 3240 PSI, 24 FPH, INCL = 41 DEG. DRILLED TO 10, 820 FT. 07:30 - 10:00 2.50 DRILL P PROD1 DRILLING, TF = 80R, 1.6/1.1 BPM, 3100 PSI, 20 FPH, INCl = 43 DEG. DRILLED TO 10,845 FT. 10:00 - 13:00 3.00 DRILL P PROD1 DRILLING, TF = 80R, 1.6/0.8 BPM, 3100 PSI, 20 FPH, INCL = 50 DEG. DRillED TO 10,870 FT. 13:00 -15:15 2.25 DRILL P PROD1 POOH FOR BIT 15:15 - 15:45 0.50 DRILL P PROD1 UO MWD BHA. M/U NOZZLE AND STINGER TO LAY IN FORM-A-PLUG Pill BHA = 36.3 FT. 15:45 - 18:00 2.25 DRILL N DPRB PROD1 RIH WITH BHA #7, 2.40" NOZZLE ON STINGER. CORRECTED DEPTH AT FLAG. ADDED 3 FT TO CTD. 18:00 - 19:00 1.00 DRILL N DPRB PROD1 RIG UP DS PUMP VAN AND HARD LINE. 19:00 - 19:30 0.50 DRILL N DPRB PROD1 Safety meeting with all hands on location (20) prior to pumping Forma Plug pill. Discussed material safety, muster point, pumping schedule, method of laying in pill, etc. 19:30 - 19:45 0.25 DRill N DPRB PROD1 PT pumpers hard lines, batch up gel pill. 19:45 - 19:55 0.17 DRill N DPRB PROD1 PUMP 10 BBlS OF FRESH WATER FLO PRO lEAD AHEAD OF FORMA PLUG PilL. RIH AND TAG TD ON DEPTH AT 10,870 FT. WINDOW WAS CLEAN. 19:55 - 20:30 0.58 DRILL N DPRB PROD1 ON LINE PUMPING FORMAPlUG PILL, 11.0 PPG. GETTING 50% RETURNS. PUMP TOTAL OF 19.3 BBlS FAP, WITH 1/4 PPB CEllOFLAKE IN LAST 4 BBlS. PUMP 7 BBlS FRESH WATER FLOPRO SPACER. DISPLACE WITH FlOPRO. 1.3 BPM, 0.9 RETURNS, 3600 PSI AT 10 BBLS. 1.3 BPM, 1.0 RETURNS, 3400 PSI AT 22.7 BBLS DISPL. FAP AT NOZZLE. 20:30 - 21 :00 0.50 DRill N DPRB PROD1 LAY IN FAP IN OPEN HOLE FROM TD OF 10870 FT AT 80%. PUMP 1 BPM, PUll AT 80 FPM, 1.0 BPM, 0.7 BPM RETURNS, 2800 PSI. LAY IN 2 BBlS IN OPEN HOLE. PARK NOZZLE AT 10,685 FT. 10 FT ABOVE WINDOW. CLOSE CHOKE. SQZ 12 BBlS FAP TO FORMATION. 1.0 BPM AT 3300 PSI. SLOW TO 0.5 BPM AT 2 BBlS SQZ. SIWHP = 1100 PSI, AT 4 BBl OUT, SIWHP = 1400 PSI, AT 8 BBl OUT, SIWHP = 1600 PSI, AT 12 BBl OUT. SIWHP = 1800 PSI AT 12.5 OUT. OPEN CHOKE. LAY IN FAP AT 1.0 BPM, PULL AT 50 FPM. TOP OF PLUG Printed: 10/1512001 12:45:12 PM ~' (" BP EXPLORATION Page 5 .. Operations Summary Report Legal Well Name: 15-41 Common Well Name: 15-41 B Spud Date: 7/22/1994 Event Name: REENTER+COMPLETE Start: 9/21/2001 End: 10/9/2001 Contractor Name: NORDIC CALISTA Rig Release: 10/9/2001 Rig Name: NORDIC 1 Rig Number: Date From - To Hours Activity Code NPT Phase Description of Operations .. 9/25/2001 20:30 - 21 :00 0.50 DRILL N DPRB PROD1 AT 10,524 FT. PULL TO SAFETY OF 10,000 FT. 21:00 - 21:30 0.50 DRILL N DPRB PROD1 10000', STOP COIL, PUMP AN ADDITIONAL 2 BBLS TO ENSURE COIL FREE FROM FAP PILL. WAIT ON FAP TO SET UP. 30 MIN. 21:30 - 21:45 0.25 DRILL N DPRB PROD1 RIH DRY TO 10575'. EXPECTED TOP OF GEL AT 10525'. DID NOT SEE ANY LOSS IN WEIGHT. PUH BACK TO SAFETY DEPTH. WILL WAIT AN ADDITIONAL 1/2 HOUR PRIOR TO CHECKING GEL AGAIN. 21:45 - 22:15 0.50 DRILL N DPRB PROD1 10000', WAIT ON GEL. 22:15 - 22:30 0.25 DRILL N DPRB PROD1 RIH DRY TO 10625'. DID NOT SEE ANY SIGNIFICANT WEIGHT LOSS. RIH WEIGHT WAS 9000#, AT 10619', SAW 500# LOSS FOR 2', THEN BACK TO NORMAL. AT MI RECCOMENDATION, WILL WAIT AN ADDITIONAL 1/2 HOUR. 22:30 - 23:00 0.50 DRILL N DPRB PROD1 10000', WAIT ON GEL. 23:00 - 23:15 0.25 DRILL N DPRB PROD1 RIH DRY TO 10650'. DID NOT SEE ANY SIGNIFICANT WEIGHT LOSS. AT MI RECCOMENDATION, WILL WAIT AN ADDITIONAL 1 HOUR. 23:15 - 00:00 0.75 DRILL N DPRB PROD1 10000', WAIT ON GEL. 9/26/2001 00:00 - 00:15 0.25 DRILL N DPRB PROD1 1 0000', WAIT ON GEL. 00:15 - 00:30 0.25 DRILL N DPRB PROD1 RIH DRY. AT 10680', TAGGED FIRM GEL. WAS ABLE TO RUN THROUGH IT WITH 2000# WEIGHT LOSS. PICKED UP TO ABOVE EXPECTED TOP OF GEL. 00:30 - 00:50 0.33 DRILL N DPRB PROD1 PU TO 10500', KICK ON PUMPS AT 2 BPM, 3500 PSI CTP. GETTING 1 FOR 1 RETURNS. RIH AT 15 FPM TO BREAK UP ANY GEL LEFT IN WELLBORE. RAN DOWN TO 10705', SAW 500# WEIGHT LOSS FROM 10680' TO 10705'. PROBABLE FAP GEL. 00:50 - 02:30 1.67 DRILL N DPRB PROD1 POOH, HAD 1 FOR 1 RETURNS THE ENTIRE TIME. NO LOSSES. 02:30 - 03:00 0.50 DRILL N DPRB PROD1 LAY DOWN NOZZLE BHA, PICK UP BHA #8. HUGHES BICENTER BIT, 2.12 DEG MOTOR TO COMPLETE BUILD SECTION. 03:00 - 04:00 1.00 DRILL N DPRB PROD1 JET ON EQUALIZING SUB WASHED OUT. SAME FOR BACKUP. WAIT FOR SPARE FROM DEADHORSE. 04:00 - 04:25 0.42 DRILL P PROD1 RESUME RIG UP OF BHA #8. 04:25 - 06:30 2.08 DRILL P PROD1 RIH WITH BHA #8. SHALLOW HOLE TEST OF MWD PASSED OK AT 1140'. 06:30 - 07:00 0.50 DRILL P PROD1 TIED-IN WITH GR, ADDED 11 FT TO CTD. 07:00 - 07:30 0.50 DRILL P PROD1 RAN THRU WINDOW WITH 150R TF. CLEANOUT FORMAPLUG TO TD. TAG TD ON DEPTH AT 10870 FT. FULL RETURNS 1.5/1.5 BPM. 07:30 - 08:00 0.50 DRILL P PROD1 ORIENT ON BOTTOM, 8 CLICKS TO GET TO 85R TF. 1.5/1.3 BPM RETURNS AFTER ORIENTING. 08:00 - 10:00 2.00 DRILL P PROD1 DRILLING, TF = 85R, 1.5 /1.3 BPM, 3200 PSI. 25 FPH, 55 DEG INCL. DRILLED TO 10,950 FT. LOSSES SLOWLY INCREASING. NOW AT 0.4 BPM. 10:00 - 10:30 0.50 DRILL P PROD1 ORIENT AROUND. 10:30 - 12:40 2.17 DRILL P PROD1 DRILLING, TF = 60R, 1.5/1.1 BPM, 3200 PSI, 40 FPH, 58 DEG INCL. Printed: 10/1512001 12:45:12 PM (' (' BP EXPLORATION Page 6 ~ Operations Summary Report Legal Well Name: 15-41 Common Well Name: 15-41 B Spud Date: 7/22/1994 Event Name: REENTER+COMPLETE Start: 9/21/2001 End: 10/9/2001 Contractor Name: NORDIC CALISTA Rig Release: 10/9/2001 Rig Name: NORDIC 1 Rig Number: Date From - To Hours Activity Code NPT Phase Description of Operations 9/26/2001 10:30 -12:40 2.17 DRILL P PROD1 DRILLED TO 11,020 ft. 12:40 - 13:30 0.83 DRILL P PROD1 WIPER TRIP TO WINDOW. 13:30 - 15:20 1.83 DRILL P PROD1 DRilLING, TF = 10R, 1.5/1.1 BPM, 3200 PSI, 80 FPH, 82 DEG INCL DRillED TO 11,123 FT. lOST All RETURNS. POSSIBLE FAULT. 15:20 -15:50 0.50 DRill P PROD1 WIPER TRIP TO WINDOW, PARTIAL RETURNSDURING WIPER TRIP AND BACK ON BOTTOM, 1.5 BPM, 0.5 BPM RETURNS. 15:50 - 16:00 0.17 DRilL P PROD1 DRILLING WITH PARTIAL RETURNS, 1.5/0.6 BPM. LOST ALL RETURNS AGAIN AT 11,131 FT. 16:00 - 17:00 1.00 DRILL P PROD1 ORIENT TF TO 1 OOR. 17:00 - 19:15 2.25 DRILL P PROD1 DRILLING, TF = 100R, 1.6/0.8 BPM, 3000 PSI, 60 FPH, INCl = 96 DEG. BETTER RETURNS AS WE DRILL AHEAD. LANDED WELL AT 11,120 FT AT 8696 FT TVDSS, 6 FT BELOW WELL PLAN 19:15 - 19:45 0.50 DRill P PROD1 11242', WIPER TRIP TO SHOE. 19:45 - 20:20 0.58 DRILL P PROD1 RESUME DRilLING, 1.7 BPM IN, 0.8 BPM OUT. lESS THAN 50% RETURNS. 3650 PSI CTP, TF 140R. 20:20 - 22:10 1.83 DRILL P PROD1 11278', TURN SECTION IS COMPLETED. POOH TO PICK UP NOZZLE FOR CEMENTING lOSS ZONES. 22:10 - 23:00 0.83 DRILL P PROD1 LAY DOWN BHA #8, PICK UP CEMENTING NOZZLE. 23:00 - 00:00 1.00 DRill N DPRB PROD1 RIH WITH CEMENTING NOZZLE. 9/27/2001 00:00 - 01 :00 1.00 DRilL N DPRB PROD1 CONTINUE RIH WITH NOZZLE. 01:00 - 01:30 0.50 DRill N DPRB PROD1 10700', KICK ON PUMPS, BEGIN MUD SWAP, TAKING MUD TO VAC TRUCK, DISPLACING WELL TO KCL PUMPING 1.7, GETTING BACK 1.0. RAN THROUGH LOSS ZONE AND RETURNS DROPPED TO 0.6 BACK FOR 1.7 PUMPED. PULL TO SHOE. 01:30 - 02:15 0.75 DRill N DPRB PROD1 STANDBY AT SHOE CIRCULATING KCL 1.71N, 0.6 OUT. RIG UP CEMENTERS. 02:15 - 02:35 0.33 DRILL N DPRB PROD1 SAFETY MEETING PRIOR TO PUMPING CEMENT. 02:35 - 02:50 0.25 DRill N DPRB PROD1 PT HARDLINES TO 4000 PSI 02:50 - 04:00 1.17 DRill N DPRB PROD1 PUMP CEMENT JOB AS FOLLOWS; 2 BBLS FRESH H2O SPACER, 15 BBlS NEAT 13.8 PPG BENTONITE CEMENT, 20 BBlS CEMENT WITH 10 PPB AGGREGATE, 4.4 BBLS CEMENT WITH AGG AND 1/4 PPB CELAFLAKE, PROBLEMS WITH BATCH MIXER, 1.4 BBLS NEAT CEMENT, 2 BBlS FRESH H2O. DISPLACE WITH RIG PUMPS. LAY IN CEMENT TO WINDOW. SI CHOKE. SOEEZED 9.3 BBlS INTO LOSS ZONES. SIWHP UP TO 1800 PSI. LAY IN REMAINDER OF CEMENT. PUH TO SAFETY DEPTH. TOTAL OF 40.8 BBlS CEMENT PUMPED. NOTE - CEMENT DENSITY ON RIG MICROMOTION WAS 14.5 PPG WHilE PUMPING NEAT CEMENT. 04:00 - 04:30 0.50 DRill N DPRB PROD1 7500', STOP AT SAFETY DEPTH. WAIT ON CEMENT. 04:30 - 05:50 1.33 DRill N DPRB PROD1 ClEANOUT CEMENT FROM TUBING GETTING 1 FOR 1 RETURNS. FOUND TOP OF CEMENT WHERE EXPECTED AT 8000'. CLEANOUT TO 10680', AND HIT HARD CEMENT. WASHED ON IT FOR 15 MINUTES, AND COULD NOT GET PAST. Printed: 10/1512001 12:45:12 PM (:. ( BP EXPLORATION Page7 ~ Operations Summary Report Legal Well Name: 15-41 Common Well Name: 15-41 B Spud Date: 7/22/1994 Event Name: REENTER+COMPLETE Start: 9/21/2001 End: 10/9/2001 Contractor Name: NORDIC CALISTA Rig Release: 10/9/2001 Rig Name: NORDIC 1 Rig Number: . Date From - To Hours Activity Code NPT Phase Description of Operations 9/27/2001 05:50 - 07:00 1.17 DRILL N DPRB PROD1 PUMP 40 BBL SPACER OF KCL, SWAP TO MUD. CIRC WELL TO FLOPRO. 07:00 - 08:40 1.67 DRILL N DPRB PROD1 POOH. 08:40 - 09:15 0.58 DRILL N DPRB PROD1 M/U MWD BHA #10, 2.13 DEG MOTOR, HTC BI-CENTER BIT #6 RR1. 09:15-11:30 2.25 DRILL N DPRB PROD1 RIH WITH BHA #10. 11 :30 - 11 :40 0.17 DRILL N DPRB PROD1 TIED-IN WITH GR. ADD 11 FT TO CTD. SWAP WELL TO 1 % KCL WATER WITH FRICTION REDUCER. 11 :40 - 13:00 1.33 DRILL N DPRB PROD1 TAG CMT TOP AT 10,693 FT. STALL SEVERAL TIMES OVER FIRST FOOT. DRILL FIRM CMTTO 10,710 FT WITH FULL RETURNS, 1.7/1.7 BPM. 13:00 - 16:00 3.00 DRILL N DPRB PROD1 DRILL FIRM CEMENT. 110 FPH, 1500 WOB, 1.8 11.8 BPM, TF = 60R. DRILL 110 FPH TO 10,731 FT. STALL SEVERAL TIMES AT 10,731 FT, NO PROGRESS. STALL MOTOR WITH NO WOB. BHA STILL ACROSS WINDOW AT 10690 - 10695 FT. PUMP 10 BBL FLOPRO PILL TO CLEAN HOLE. NO DIFFERENCE. STALL EACH TIME AT 10,731 FT. NO MOTOR WORK BEFORE STALL AND NO WOB. NO PROGRESS IN 3 HOURS. 16:00 - 17:45 1.75 DRILL N DPRB PROD1 POOH TO INSPECT BHA. 17:45 -19:15 1.50 DRILL N DPRB PROD1 INSPECT BHA, BIT-3 CHIPPED TEETH FROM WINDOW, MOTOR OK, BLEED PORT OK, NO MARKS ON BHA. NO PROBLEMS APPARENT WITH BHA. CIO BIT, MOTOR AND BAKER MHA. 19:15-21:25 2.17 DRILL N DPRB PROD1 RIH WITH BHA #11, 2.1 DEG MOTOR, BIT #7 - DPI BI-CENTER, SN 1963816. SHALLOW HOLE TEST OF MWD AND ORIENTER PASSED OK AT 2500'. 21:25 - 21:50 0.42 DRILL N DPRB PROD1 LOG TIE IN PASS DOWN. MAKE +9' CORRECTION. 21:50.22:10 0.33 DRILL N DPRB PROD1 ORIENT TO 60R, SAME TOOL FACE THAT THE ORIGINAL HOLE WAS DRILLED AT. 22:10 - 22:30 0.33 DRILL N DPRB PROD1 TAG UP AT 10734'. ATTEMPT TO START DRILLING. HITTING HARD STRINGER, SAME AS BEFORE. NOT GETTING GOOD STALLS. MOTOR APPEARS TO BE STALLING, BUT ISN'T GIVING A DISTINCTIVE QUICK STALL. WILL POOH TO EXAMINE BIT AND MOTOR. CHECK FOR LEAKS IN BHA, AND POSSIBLY RUN BACK IN WITH A D331 DSM TO MILL HARD STREAK. 22:30 - 00:00 1.50 DRILL N DPRB PROD1 POOH. 9/28/2001 00:00 - 01 :30 1.50 DRILL N DPRB PROD1 TAG UP AT SURFACE. PT BHA #11, FOUND VERY SMALL CRACK IN UBHO HOUSING. CHANGE OUT UBHO. CHECK BIT AND MOTOR. FOUND BIT SEVERELY DAMAGED. 4 CUTTERS ON PILOT SECTION CHIPPED OR MISSING. 4 CUTTERS ON GAUGE SECTION BADLY CHIPPED. FACE OF BIT RINGED. DAMAGE APPEARS TO HAVE COME FROM JUNK OR POSSIBLY OTHER HARD DEBRIS ON BOTTOM. GIVEN SHORT TIME THIS NEW BIT WAS ON BOTTOM ON THE LAST RUN, THE DAMAGE APPEARS TO BE QUITE BAD. 01 :30 - 02:25 0.92 DRILL N DPRB PROD1 WAIT ON NEW MOTOR FROM DEADHORSE. Printed: 10/1512001 12:45:12 PM ( (" BP EXPLORATION Page 8- Operations Summary Report Legal Well Name: 15-41 Common Well Name: 15-41 B Spud Date: 7/22/1994 Event Name: REENTER+COMPLETE Start: 9/21/2001 End: 10/9/2001 Contractor Name: NORDIC CALISTA Rig Release: 10/9/2001 Rig Name: NORDIC 1 Rig Number: Date From ... To Hours Activity Code ,NPT Phase Description of Operations .. 9/28/2001 02:25 - 03:00 0.58 DRILL N DPRB PROD1 MAKE UP NEW MOTOR AT 2.12 DEG, D331 DSM, AND MWD PACKAGE. BHA #12. 03:00 - 05:00 2.00 DRILL N DPRB PROD1 RIH WITH BHA#12, 2.12 DEG MOTOR, 0331 DSM. SHALLOW HOLE TEST OK. 05:00 - 05:10 0.17 DRILL N DPRB PROD1 TAG BOTTOM, MAKE =7' DEPTH CORRECTION. ORIENT 75R 05:10 - 06:00 0.83 DRILL N DPRB PROD1 BEGIN MILLING JUNK AT 10732.7'. 2000 PSI CTP, 1.5 IN, 1.5 OUT. VERY GRABBY AND LOTS OF STALLS AT FIRST. AFTER 20 MINUTES, IT SMOOTHED OUT. MADE HOLE TO 10734.9 AT 40 FPH. HARD DRILLING AT 10734.9', ROP DROPPED TO O. LOOKING AT INCLINATION WE ARE AT 11.34 DEG. SHOULD BE 15 DEG IF MWD TOOL IS 10' OUT WINDOW. ALSO, TOP OF CEMENT RETAINER WAS SET AT 10738'. IT IS PROBABLE THAT WE HAVE NOT EXITED THE WINDOW, AND HAVE DRILLED UP THE CEMENT RAMP TO THE TOP OF THE CEMENT RETAINER. 06:00 - 06:20 0.33 DRILL N DPRB PROD1 CIRCULATE 16 BBL FLO PRO SWEEP TO CLEAN DEBRIS OOH. 06:20 - 08:30 2.17 DRILL N DPRB PROD1 POOH 08:30 - 09:00 0.50 DRILL N DPRB PROD1 UO MWD BHA. 09:00 - 10:00 1.00 DRILL N DPRB PROD1 GREASE INJECTOR CHAINS. 10:00 -15:30 5.50 DRILL P PROD1 PERFORM WEEKLY BOPE PRESS I FUNCTION TEST. SEND REPORT TO AOGCC. 15:30 -16:15 0.75 DRILL N ~ DPRB PROD1 MIU BAKER 2 5/8" DB UNDERREAMER BHA DRESSED WITH 4.22" BLADES. 16:15 -18:15 2.00 DRILL N DPRB PROD1 RIH WITH BHA #13 18:15 -18:45 0.50 DRILL N DPRB PROD1 STOP AT 10580 FT. ADD 10 FT CTD [AVE. DEPTH CORR]. CIRC. OPEN UR BLADES, RIH SLOW. TAG CMT AT 10620', DRILL CEMENT WITH UR. 18:45 - 21:00 2.25 DRILL N DPRB PROD1 10623', STALL. CONTINUE UR CEMENT. SEVERAL STALLS AT 10625', REDUCE ROP BUT SLOW GETTING STARTED. TOOK A WHILE, BUT WE ARE ABLE TO DRILL AT ABOUT 24 FPH. 21 :00 - 22:00 1.00 DRILL N DPRB PROD1 10640', UPDATE AT 21:00, UR CEMENT SLOWWWWWL Y. 1.8 IN, 1.8 OUT. 2850 PSI CTP. 22:00 - 23:00 1.00 DRILL N DPRB PROD1 10654', PUMP 15 BBL SWEEP OF 2# BIOZAN. 23:00 - 00:00 1.00 DRILL N DPRB PROD1 10667' AT 23:00 - 10674' AT 24:00. CONTINUING TO UR CEMENT. 9/29/2001 00:00 - 01 :00 1.00 DRILL N DPRB PROD1 CONTINUE UR CEMENT FROM 10675'. 01 :00 - 02:00 1.00 DRILL N DPRB PROD1 UPDATE AT 01:00, CONTINUING TO UR CEMENT AT 10683'. 02:00 - 03:00 1.00 DRILL N DPRB PROD1 UPDATE AT 02:00, CONTINUING TO UR CEMENT AT 10693'. IN MIDDLE OF WINDOW, NOT SEEING ANY PROBLEMS. MADE IT THROUGH WINDOW OK. NO BAD AREAS, AND ONLY A FEW STALLS. 03:00 - 04:00 1.00 DRILL N DPRB PROD1 UPDATE AT 03:00. CONTINUING TO UR CEMENT AT 10705'. 04:00 - 05:00 1.00 DRILL N DPRB PROD1 UPDATE AT 04:00. CONTINUING TO UR CEMENT AT 10719'. NO LOSSES. 100% RETURNS. 05:00 - 05:10 0.17 DRILL N DPRB PROD1 AT 10733', AS DEEP AS WE DARE GO WITHOUT HITTING TOP OF BRIDGE PLUG. PUMP 2# BIO SWEEP. 05:10 - 06:30 1.33 DRILL N DPRB PROD1 SWEEP AROUND, START BACKREAM UP 06:30 - 08:30 2.00 DRILL N DPRB PROD1 REAM DOWN AT 5 FPM TO 10731 FT. BACK REAM UP TO Printed: 10/1512001 12:45:12 PM ( (" BP EXPLORATION Page 9 L I Operations Summary Report Legal Well Name: 15-41 Common Well Name: 15-41 B Spud Date: 7/22/1994 Event Name: REENTER+COMPLETE Start: 9/21/2001 End: 10/9/2001 Contractor Name: NORDIC CALISTA Rig Release: 10/9/2001 Rig Name: NORDIC 1 Rig Number: Date From ~ To, Hours Activity Code NPT Phase Description of Operations 9/29/2001 06:30 - 08:30 2.00 DRILL N DPRB PROD1 10,600 FT, 08:30 - 09:45 1.25 DRILL N DPRB PROD1 POOH. 09:45 - 10:15 0.50 DRILL N DPRB PROD1 UO MOTOR AND UNDERREAMER. MIU CMT NOZZLE. 10:15 - 12:15 2.00 DRILL N DPRB PROD1 RIH WITH CMT NOZZ BHA #14 12:15 - 12:30 0.25 DRILL P PROD1 SAFETY MEETING, REVIEW CMTG PROCEDURE AND HAZARDS. 12:30 - 13:00 0.50 DRILL N DPRB PROD1 PRESS TEST CMT LINE. 13:00 - 14:15 1.25 DRILL N DPRB PROD1 CIRC BOTTOMS UP AT 3.3 BPM TO LIFT FILL SEEN AT PBTD. TAG PBTD AT 10733 FT. 14:15 -15:00 0.75 DRILL N DPRB PROD1 STAGE 8 BBLS, 17 PPG, G CEMENT SLURRY, [17.2 PPG AT DESIOMETER]. DISPLACE WITH RIG PUMPS, 2.3 BPM, 2700 PSI, FULL RETURNS. NOZZAT 10,731 FT. CIRC 2 BBLS OUT NOZZAND LAY IN 6 BBLS AT 80%. TOC = 10,300 FT. PULL TO 10,050 FT. 15:00 - 15:30 0.50 DRILL N DPRB PROD1 CIRC ABOVE CEMENT PLUG 15 MIN. RIH DRESS OFF TOP OF CMT PLUG TO 10,630 FT AT 2.9 BPM, 3400 PSI. 15:30 - 17:30 2.00 DRILL N DPRB PROD1 POOH CHASING CEMENT TO SURFACE. 17:30 -18:30 1.00 DRILL N DPRB PROD1 UO BHA. CUT OFF 203 FT OF CT FOR FATIGUE MAINT. WELD ON CTC. PULL TEST WI 30K. 18:30 -19:15 0.75 DRILL N DPRB PROD1 REPLACE PACKOFFS. 19:15 - 20:10 0.92 DRILL N DPRB PROD1 MAKE UP PILOT HOLE BHA. D331 DSM, 1.75 DEG WF MOTOR. MWD. 20:10 - 20:30 0.33 DRILL N DPRB PROD1 RIH WITH BHA #15 TO DRILL PILOT HOLE. 20:30 - 21:15 0.75 DRILL N DPRB PROD1 SHALLOW HOLE TEST. ORIENTER IS NOT WORKING. POOH TO CHANGE ORIENTER. 21:15 - 22:45 1.50 DRILL N DPRB PROD1 CHANGE OUT ORIENTER. 22:45 - 23:45 1.00 DRILL N DPRB PROD1 RIH. SHALLOW HOLE TEST AT 2500', MWD AND ORIENTER PASSED OK. 23:45 - 00:00 0.25 DRILL N DPRB PROD1 LOG TIE IN PASS AT 10540'. 9/30/2001 00:00 - 01 :40 1.67 DRILL N DPRB PROD1 CONTINUE WITH TIE IN PASS. AT 10540'. MAKE +5' CORRECTION, THEN RELOG TO CONFIRM TIE IN. 01:40 - 01:50 0.17 DRILL N DPRB PROD1 ORIENT TO 90L. 01 :50 - 04:25 2.58 DRILL N DPRB PROD1 TAG TOP OF CEMENT AT 10626', BEGIN DRILLING PILOT HOLE AT 90L. PUMPING 1.6/1.6 2980 PSI. ROP=28 FPH. 04:25 - 05:00 0.58 DRILL N DPRB PROD1 DRILL AT 90L TOOL FACE TO 10700', PICK UP ORIENT AROUND TO 90R. MILL RAMP 10700'-10704'. STARTED GETTING TOOL FACE JUMPING AROUND A BIT. CALLED THAT THE END OF THE RAMP. ACTUAL TOOL FACE WITH REACTIVE WAS 76R FOR MOST OF WINDOW. NO LOSSES AT ALL DURING THIS MILLING OPERATION. (UPPER WINDOW CEMENT JOB IS HOLDING HYDRAULIC ISOLATION) 05:00 - 07:00 2.00 DRILL N DPRB PROD1 PUMP 5 BBL BIO SWEEP AT BOTTOM, POOH 07:00 - 07:30 0.50 DRILL N DPRB PROD1 C/O MOTOR AND MILL. MIU MWD BHA #16 WITH 2.5 DEG FIXED MOTOR AND 2.80" WINDOW MILL. 07:30 - 09:30 2.00 DRILL N DPRB PROD1 RIH WITH MWD BHA #16 TO MILL WINDOW. SHALLOW TEST. RIH. 09:30 - 10:00 0.50 DRILL N DPRB PROD1 LOG TIE-IN WITH GR. ADDED 4 FT CTD. 10:00 - 10:20 0.33 DRILL N DPRB PROD1 ORIENT TF TO 90R. 10:20 -10:40 0.33 DRILL N DPRB PROD1 TAG LINER AT 10706.6 FT. FLAG CT. PICK UP 1 FT. Printed: 10/1512001 12:45:12 PM (' f ( BP EXPLORATION - Page 10 Operations Summary Report Legal Well Name: 15-41 Common Well Name: 15-41 B Spud Date: 7/22/1994 Event Name: REENTER+COMPLETE Start: 9/21/2001 End: 10/9/2001 Contractor Name: NORDIC CALISTA Rig Release: 10/9/2001 Rig Name: NORDIC 1 Rig Number: Date From - To Hours Activity Code NPT Phase Description of Operations 9/30/2001 10:20 - 10:40 0.33 DRILL N DPRB PROD1 START TIME MILLING AT 10:40 HRS AT 10,705.6 FT. TF = 90R. 1.8/1.8 BPM, 3330 PSI. 10:40 - 14:15 3.58 DRILL N DPRB PROD1 TIME MILLING AS PER SCHEDULE. 1.8/1.8 BPM, 3140 PSI, 118RTF. MILLED TO 10,706.3 FT. 14:15 - 16:00 1.75 DRILL N DPRB PROD1 TIME MILLING WINDOW. 1.8/1.8 BPM, 3260 PSI, 118R TF. 1000 woe. MILLED TO 10,706.7 FT. ADDED 10 BBL BIOZAN AND FRICTION REDUCER. 16:00 - 18:00 2.00 DRILL N DPRB PROD1 TIME MILLING, 1.8/1.8 BPM, 2600 PSI, 121 RTF. 2000 woe MILLED TO 10,707.4 FT. 18:00 - 19:00 1.00 DRILL N DPRB PROD1 TIME MILLING, 1.8/1.8 BPM, 121R TF, 2000 woe MILLED TO 10707.9 FT. 19:00 - 20:00 1.00 DRILL N DPRB PROD1 19:00 UPDATE. 10707.9', MILLING AHEAD. BEGINING TO TAKE WEIGHT. LAST TENTH WE HAD woe OF 2200 LBS. TF 120R 20:00 - 21 :00 1.00 DRILL N DPRB PROD1 20:00 UPDATE. 10708.5', MILLING AHEAD. LAST TENTH WE HAD woe OF 2600 LBS. TF112R 21:00 - 21:40 0.67 DRILL N DPRB PROD1 21 :00 UPDATE. 10709.3, MILLING AHEAD. LAST TENTH WE HAD woe OF 2900 LBS. TF 115 R. SEEING METAL DURING ENTIRE OPERATION. GETTING SOME FORMATION SAND NOW. 21 :40 - 22:00 0.33 DRILL N DPRB PROD1 BOTTOM OF WINDOW AT 10709.9'. DRILL AN ADDITIONAL 10' OF FORMATION TO 10720'. DRILLING AT 114R, 22:00 - 23:00 1.00 DRILL N DPRB PROD1 UPDATE AT 22:00 AT 10711.1', WOB=4300 LBS, TF=96R, 1.8/1.8,3350 PSI CTP. ABLE TO DRILL AHEAD AT 6-7 FPH. 23:00 - 23:45 0.75 DRILL N DPRB PROD1 MILLING FORMATION AT 10716.8' AT 22:00. ROP 7 FPH, TF=98 R. 23:45 - 00:00 0.25 DRILL N DPRB PROD1 10721', LET MOTOR DRILL OFF, PUMP 5 BBL SWEEP OF 2# BIOZAN. 10/1/2001 00:00 - 00:15 0.25 DRILL N DPRB PROD1 CONTINUE TO PUMP BIOZAN SWEEP PRIOR TO POH. 00:15 - 01:45 1.50 DRILL N DPRB PROD1 POOH WITH WINDOW MILLING BHA. 01 :45 - 02:20 0.58 DRILL N DPRB PROD1 TAG UP, LAY DOWN WINDOW MILLING BHA. MILL RECOVERED AT 2.79"GO, 2.78" NO GO. SWIRL PATTERN ON NOSE OF MILL INDICATING IT CROSSED CENTER LINE. MAKE UP NEXT MILL TO DRESS WINDOW. l' CRAYOLA MILL WITH METAL MUNCHER BUTTONS 2.78" OD. 1.75 DEG ADJUSTABLE BENT MOTOR. 02:20 - 04:20 2.00 DRILL N DPRB PROD1 RIH WITH BHA 17 TO DRESS WINDOW. 04:20 - 04:45 0.42 DRILL N DPRB PROD1 LOG TIE IN PASS DOWN FROM 10540'. MAKE +6' CORRECTION. 04:45 - 05:25 0.67 DRILL N DPRB PROD1 RIH DRY, TAG UP AT TOP OF WINDOW 10704', ORIENT TO 90R, BRING ON PUMPS TO MINIMUM, RIH HUNG UP AGAIN AT 10705'. PU, BRING UP RATE TO 1.7, RIH AS FAST AS PRACTICAL. HUNG UP AT TOP OF WINDOW 10705'. CONTINUE TO WORK TOP OF WINDOW. TRIED ABOUT 15 TIMES, CONTINUE TO STALL AT THE SAME PLACE. POOH TO PICK UP LESS AGGRESSIVE CRA YOLA MILL WITH NO METAL MUNCHER BUTTONS. 05:25 - 07:00 1.58 DRILL N DPRB PROD1 POOH FOR LESS AGGRESSIVE MILL. 07:00 - 07:15 0.25 DRILL N DPRB PROD1 CIO CRA YOLA MILL TO BAKER CTC CRA YOLA MILL WITH Printed: 10/1512001 12:45:12 PM ( (' BP EXPLORATION Page 11 - Operations Summary Report Legal Well Name: 15-41 Common Well Name: 15-418 Spud Date: 7/22/1994 Event Name: REENTER+COMPLETE Start: 9/21/2001 End: 10/9/2001 Contractor Name: NORDIC CALISTA Rig Release: 10/9/2001 Rig Name: NORDIC 1 Rig Number: Date From - To Hours Activity Code NPT Phase Description of Operations 10/1/2001 07:00 - 07:15 0.25 DRILL N DPRB PROD1 NO METAL MUNCHER BUTTONS. 2.78" MILL. 07:15 - 07:30 0.25 DRILL P PROD1 SAFETY MEETING. REVIEW DRIVING HAZARDS WITH ICY ROADS. 07:30 - 09:00 1.50 DRILL N DPRB PROD1 RIH WITH MILL TO DRESS WINDOW. SHALLOW TEST. ORIENTER FAILED. POOH. ORIENTER HAD SMALL PIECE OF CMT IN IT. 09:00 - 09:30 0.50 DRILL N DPRB PROD1 CIO SPERRY ORIENTER. 09:30 - 12:00 2.50 DRILL N DPRB PROD1 RIH WITH MILL TO DRESS WINDOW. SHALLOW TEST. OK. RIH. 12:00 - 12:15 0.25 DRILL N DPRB PROD1 TIED-IN WITH GR. ADDED 4 FT CTD. 12:15 -12:20 0.08 DRILL N DPRB PROD1 ORIENT TF TO 90R. 12:20 - 12:40 0.33 DRILL N DPRB PROD1 DEPTH INDICATOR SLIPPED FOOTAGE WHILE RIH. 12:40 -13:10 0.50 DRILL N RREP PROD1 REPAIR INJECTOR HEAD CT DEPTH MEASURING WHEEL, TIGHTEN CHAIN. 13:10 -13:30 0.33 DRILL N DPRB PROD1 RE-TIE-IN WITH GR, ADDED 4 FT TO CTD. 13:30 - 16:30 3.00 DRILL N DPRB PROD1 RIH AND STALL AT 10,707.7 AND 10707.9 FT. TF = 90R. STALLED 4 TIMES BEFORE EXITING WINDOW. REAM IN HOLE TO 10,716.4 FT AND STALL. BACK REAM 10 FPH. FROM 10709 -10703'. RIH AND REAM FORMATION TO 10719 FT. BACK REAM 10709-10704 FT. DRIFT WITH NO PUMP. WINDOW OK. REAM DOWN TO 10,719 FT. STACK WT. ORIENT 3 CLICKS AND BACKREAM AT 130R TF. SWAP TO FLOPRO WHILE BACKREAMING. FULL RETURNS AT START. FLAG CT AT 10,500 FT EOP. FLOPRO AT SURFACE STILL HAVE FULL RETURNS, 1.6/1.6 BPM, 3100 PSI. 16:30 - 18:00 1.50 DRILL N DPRB PROD1 POOH WITH MILLING BHA. 18:00 - 18:15 0.25 DRILL P PROD1 SAFETY MEETING WITH DAY AND NIGHT CREWS. REVIEW REPORTING PROCEDURE. 18:15 -19:30 1.25 DRILL N DPRB PROD1 UO MOTOR AND MILL. MILL GAUGED AT 2.73". M/U MWD DRILLING BHA WITH 2.1 DEG MOTOR AND 2.69 - 3.0" DPI BI-CENTER BIT. CHANGE OUT MWD BATTERIES AND MHA. 19:30 - 21 :30 2.00 DRILL N DPRB PROD1 RIH WITH BHA #18, SHALLOW HOLE TEST OK. CONTINUE RIH. 21 :30 - 22:25 0.92 DRILL N DPRB PROD1 CATCH EOP FLAG FROM LAST RUN, TAG BOTTOM EXACTL Y SAME AS LAST RUN AT 10719'. ORIENT TO 90R. 22:25 - 23:00 0.58 DRILL N DPRB PROD1 BEGIN DRILLING BUILD AND TURN. 1.6/1.6, 3100 PSI FREE SPIN, 100% RETURNS. 23:00 - 23:59 0.98 DRILL N DPRB PROD1 10731', DRILLING SLOW, ONLY ABOUT 30 FPH. GETTING SOME LOSSES NOW. 1.6 IN, 1.4 BACK. TF 90R. 23:59 - 00:00 0.02 DRILL N DPRB PROD1 10754' AT MIDNIGHT. LOSSES HAVE HEALED, GETTING 1 FOR 1 RETURNS. 101212001 00:00 - 00:45 0.75 DRILL N DPRB PROD1 DRILL BUILD SECTION FR 10754'. 1.6IN/1.6 OUT, 3250 PSI, NO LOSSES, 00:45 - 01:10 0.42 DRILL N DPRB PROD1 GETTING LESS REACTIVE NOW. ORIENT AROUND TO HOLD 90r AGAIN. 01:10 - 02:00 0.83 DRILL N DPRB PROD1 RESUME DRILLING FR 10763'. 1.6/1.5,3320 PSI. SLIGHT LOSSES OF 0.1 BPM. 02:00 - 02:50 0.83 DRILL N DPRB PROD1 CAN'T HOLD 90R, CAN'T GET RELIABLE CLICKS. MESS WITH ORIENTER FOR AND HOUR. THEN TRIP FOR NEW ONE. Printed: 10/1512001 12:45:12 PM Legal Well Name: Common Well Name: Event Name: Contractor Name: Rig Name: Date 9/21/2001 9/22/2001 9/23/2001 d' ( ( BP EXPLORATION Operations Summary Report 15-41 15-41 B REENTER+COMPLETE NORDIC CALISTA NORDIC 1 15:30 -17:30 From - To Hours Activity Code NPT 17:30 - 23:00 23:00 - 00:00 00:00 - 00:30 00:30 - 01 :30 01:30 - 02:15 02:15 - 02:45 02:45 - 03:15 03:15 - 05:30 05:30 - 06:30 06:30 - 07:30 07:30 - 08:00 08:00 - 09:30 09:30 - 09:40 09:40 - 11 :30 11:30 -12:20 12:20 - 14:20 14:20 -15:10 15:10-16:30 16:30 - 17:45 17:45 -18:30 18:30 - 20:00 20:00 - 21 :00 21 :00 - 22:00 22:00 - 23:00 23:00 - 00:00 00:00 - 01 :00 01:00 - 02:15 2.00 RIGU P 5.50 BOPSU¡:; P 1.00 STWHIP P 0.50 STWHIP P 1.00 STWHIP P 0.75 STWHIP N 0.50 STWHIP N 0.50 STWHIP N 2.25 STWHIP P 1.00 STWHIP P 1.00 STWHIP P 0.50 STWHIP P 1.50 STWHIP P 0.17 STWHIP P 1.83 STWHIP P 0.83 STWHIP P 2.00 STWHIP P 0.83 STWHIP P 1.33 STWHIP P 1.25 STWHIP P 0.75 STWHIP P 1.50 STWHIP P 1.00 STWHIP P 1.00 STWHIP P 1.00 STWHIP P 1.00 STWHIP P 1.00 STWHIP P 1.25 STWHIP P Phase PRE DECOMP WEXIT WEXIT WEXIT DFAL WEXIT DFAL WEXIT DFAL WEXIT WEXIT WEXIT WEXIT WEXIT WEXIT WEXIT WEXIT WEXIT WEXIT WEXIT WEXIT WEXIT WEXIT WEXIT WEXIT WEXIT WEXIT WEXIT WEXIT WEXIT Page 1 of 19 Start: 9/21/2001 Rig Release: 10/9/2001 Rig Number: Spud Date: 7/22/1994 End: 10/9/2001 Description of Operations ACCEPT NORDIC 1 ON DS 15-41 B AT 15:30 HRS, 09/21/01. BERM AND SPOT TANKS, N/U BOPE. GENERAL RIG UP. PERFORM INITIAL BOPE PRESS I FUNCTION TEST. SEND REPORT TO AOGCC. CUT OFF BKR CTD. DRESS AND WELD ON DS CT CONNECTOR. WELD ON 2" CT CONNECTOR. M/U BHI MWD MILLING BHA WITH 1.75 DEG MOTOR, 2.8" PILOT MILL RIH AND SHALLOW TEST TOOLS, SPERRY ORIENTER FAILED. POOH TO CHANGE OUT ORIENTER. CHANGE OUT ORIENTER. RIH, SHALLOW TEST OK, CONT. TO RIH. MILL OUT 3 1/2" SWN NIPPLE TO 2.80". RIH. LOG TIE-IN WTIH GR. ADD 2.5 FT CTD. ORIENT TF TO 270 DEG. TAG CMT AT 10,617 FT BKB. MILL CMT AT 40 FPH, 1500 woe, TO 10,685 FT AT 270 DEG. ORIENT TF TO 90R AND MILL 4.5 FT CMT TO 10,689.4 FT BKB. FLAG CT AT 10,500 FT EOP. POOH FOR WINDOW MILL AND MOTOR. M/U 2.5 DEG FIXED BEND MOTOR AND 2.80" DIA WINDOW MILL RIH WITH MILLING BHA #2, 2.5 DEG MOTOR AND 2.8" WINDOW MILL. ADD 4 FT CTD AT FLAG. ORIENT TF TO 80R. TAG CMT AT 10687.4, CORRECT TO 10,689.4 FT. PICK UP 1 FT. START TIME MILLING AS PER PROCEDURE AT 10,688.4 FT. TF = 80 DEG R. 1.9 BPM, 3300 PSI, MILLING AT 10688.6 FT. TF = 90R, 1.8 BPM, 3200 PSI, MILLED TO 10,688.8 FT. MILLING, TF = 90 R, 1.8 BPM, 3200 PSI, MILL TO 10689.1 MILLING, TF:84R, 1.8/3315 PSI, MILL TO 10689.4' MILLING, TF:81 R, 1.8/3250 PSI, 200-300# woe, MILL TO 10689.7' MILLING, TF:86R, 1.8/3300 PSI, 500-800# woe, MILL TO 10689.9' MILLING, TF:86R, 1.8/3250 PSI, 1200-1500#WOB, MILL TO 10690.2' MILLING, TF:86R, 1.8/3250 PSI, 1200-1500# woe, MILL TO 10690.7' MILLING, TF:84R, 1.8/3250 PSI, 1000-1500#WOB, MILL TO 10691.5' MILLING, TF:93R, 1.8/3450 PSI, 1500-1700# woe, MILL TO 10692.4' END OF TIME SEQUENCE Printed: 10/15/2001 12:45:12 PM BP EXPLORATION Page 2 of 19 Operations Summary Report Legal Well Name: 15-41 Common Well Name: 15-41 B Spud Date: 7/22/1994 Event Name: REENTER+COMPLETE Start: 9/21/2001 End: 1 0/9/2001 Contractor Name: NORDIC CALISTA Rig Release: 10/9/2001 Rig Name: NORDIC 1 Rig Number: Date From - To Hours Activity Code NPT Phase Description of Operations 9/23/2001 02:15 - 02:45 0.50 STWHIP P WEXIT BEGIN INCREASING WOB TO 4K#. 300 DPSI TF:86R MILL TO 10693.6' 02:45 - 03:15 0.50 STWHIP P WEXIT MILLING, TF:103R, 1.8/3350 PSI, 4000-5000# WOB, MILL TO 10694.6' 03:15 - 03:45 0.50 STWHIP P WEXIT APPEAR TO HAVE POPPED THROUGH LINER AT 10695'. TF BACK TO 85R. 03:45 - 06:00 2.25 STWHIP P WEXIT MILL AHEAD TO 10705'. EVIDENCE OF FORMATION ON SHAKER. 06:00 - 07:30 1.50 STWHIP P WEXIT POOH. ORIGINAL EOP FLAG NOW AT 10502'. (FADED WHITE). CONTINUE TO POOH. 07:30 - 08:00 0.50 STWHIP P WEXIT UO MOTOR AND MILL #2. MILL=2.79" OD. M/U 1.75 DEG MOTOR AND 2.79" CRAYOLA MILL. 08:00 - 10:00 2.00 STWHIP P WEXIT RIH WITH MILLING BHA #3. SHALLOW TEST TOOLS. RIH. ON DEPTH AT FLAG AT 10502' EOP. 10:00 - 11:00 1.00 STWHIP P WEXIT ORIENT TF TO 90R. TIED-IN WITH GR AT 10541 FT. ADDED 9 FT TO CTD. 11 :00 - 13:00 2.00 STWHIP P WEXIT WEDGE CRAYOLA MILL AT 10,693 FT. CTD. TOP OF WINDOW AT 10,690 FT. REAM DOWN. SEVERAL STALLS. TF = 80R. STALLING ON BOTTOM END OF WINDOW. SEVERAL STALLS. WEDGING LONG TAPER MILL AT BOTTOM OF WINDOW ON STEEL. NO MOTOR WORK BEFORE STALLS. 13:00 - 14:00 1.00 STWHIP P WEXIT REAMING AT 10694 FT. SWAP WELL TO NEW FLOPRO. FULL RETURNS. SEVERAL QUICK STALLS. SLOW PROGRESS. 14:00 - 14:30 0.50 STWHIP P WEXIT LOOSING RETURNS. 50% RETURNS AFTER FLOPRO REACHED SURFACE. HAD FULL RETURNS WITH BIOZAN. EXTRA ECD OF FLOPRO APPARENTLY CAUSED FLUID LOSS AT WINDOW. NO PROGRESS. 14:30 - 16:15 1.75 STWHIP N DPRB WEXIT POOH FOR SMALLER OD CRA YOLA MILL. 16:15 - 17:00 0.75 STWHIP N DPRB WEXIT CHANGE BATTERIES IN BHI TOOLS. REPLACE 2.79" OD CRAYOLA MILL WITH 2.70" OD CRAYOLA MILL. 17:00 - 19:15 2.25 STWHIP N DPRB WEXIT RIH WITH MILLING BHA #4. 1.75 DEG MOTOR AND 2.70" CRA YOLA MILL. SHALLOW HOLE TEST. RIH. 19:15 - 19:45 0.50 STWHIP N DPRB WEXIT LOG GR TIE IN FROM 10550'. ADD l' CORRECTION. 19:45 - 20:30 0.75 STWHIP N DPRB WEXIT ORIENT TO 90R. 20:30 - 21 :30 1.00 STWHIP N DPRB WEXIT REAM WINDOW IN DOWN PASS, TF:110R. SEVERAL STALLS AT 10695'. PU & WORK THROUGH. BACK REAM AT 1'/MIN. ABLE TO RUN THRU DRY. 21 :30 - 22:30 1.00 STWHIP N DPRB WEXIT ORIENT 1 CLICK. BACK REAM AT 1'/MIN.D 22:30 - 00:00 1.50 STWHIP N DPRB WEXIT PUMP 30 BBLS 10 PPB LCM (MIX-2). SQUEEZE AWAY AT 0.5 BPM, MAX PRESSURE 1050 PSI. SHUT-IN PRESSURE DROPPED SLOWLY AFTER 30 BBLS SQUEEZED. ESTABLISH CIRCULATION. 1.5 IN/0.5 OUT 9/24/2001 00:00 - 01 :45 1.75 STWHIP N DPRB WEXIT MIX 15 BBLS 20 PPB MIX-2 LCM. DISPLACE WITH FLOPRO. SHUT-IN WELL AND SQUEEZE. MAX PRESSURE 850 PSI. BEGIN CIRCULATING. 1.5 IN/0.6 OUT. NOT MUCH CHANGE. 01 :45 - 03:30 1.75 STWHIP N DPRB WEXIT POOH FOR CEMENTNG ASSY. ( ( Printed: 10/15/2001 12:45:12 PM BP EXPLORATION Page 3 of 19 Operations Summary Report Legal Well Name: 15-41 Common Well Name: 15-41 B Spud Date: 7/22/1994 Event Name: REENTER+COMPLETE Start: 9/21/2001 End: 1 0/9/2001 Contractor Name: NORDIC CALISTA Rig Release: 10/9/2001 Rig Name: NORDIC 1 Rig Number: Date From - To Hours Activity Code NPT Phase Description of Operations 9/24/2001 03:30 - 04:30 1.00 STWHIP N DPRB WEXIT LD MWD & MTR. MU CEMENT STINGER. 04:30 - 07:00 2.50 STWHIP N DPRB WEXIT RIH WITH CEMENTING ASSY. BHA OAL: 32.85' TAG TD AT 10,701' CTD. CORRECT DEPTH TO 10,705 FT. CIRC KCL WATER AND RECOVER FLOPRO. 1.8 BPM, 0.9 BPM RETURNS. 1520 PSI. 07:00 - 07:15 0.25 STWHIP N DPRB WEXIT SAFETY MEETING WITH ALL PERSONNEL. REVIEW CEMENTING PROCEDURE AND HAZARDS. 07:15 - 07:50 0.58 STWHIP N DPRB WEXIT PRESS TEST CMT LINE. FINISH RECOVERING FLOPRO. CMT AT WT AT 07:50 HRS. 07:50 - 09:00 1.17 STWHIP N DPRB WEXIT STG 13.8 BBLS, 13.8 PPG, G CMT WI 8% BENTONITE DRY BLENDED. PURGE CEMENT LINE. DISPLACE SLURRY WITH RIG PUMPS. CLOSE CHOKE. SOZ 7 BBLS CMT TO FORMATION. FINAL SQZ = 0.2 BPM AT 1670 PSI WHP. LAY IN 7 BBLS CMT. WCTOC = 10,350 FT. CMT IN PLACE AT 08:35 HRS. PULL TO SAFETY AT 10,050 FT. 09:00 - 09:40 0.67 STWHIP N DPRB WEXIT HOLD SOZ PRESS ON CMT. 09:00, SIWHP = 1000 PSI, HOLD 15 MIN. LOST 150 PSI. 09:15, INC WHP TO 1100 PSI, LOST 90 PSI IN 7 MIN. 09:24, INC WHP TO 1350 PSI, LOST 250 PSI IN 16 MIN. 09:40 -10:10 0.50 STWHIP N DPRB WEXIT RIH AND JET OUT CMT. 10400',2.0 BPM, 1400 PSI, 30 FPM, FULL RETURNS 10600',1.5 BPM, 1420 PSI, 20 FPM, FULL RETURNS 10704',1.5 BPM, 1450 PSI, 20 FPM, ATTD, FULL RETURNS, NO WT LOSS THRU WINDOW. 10:10 -10:30 0.33 STWHIP N DPRB WEXIT CIRC CONTAMINATED CMT TO SURFACE AT 1.5 BPM. FULL RETURNS. INC RATE TO 2.0 BPM, JET OUT WINDOW AREA AT 2 BPM, NO WT LOSS GOING DOWN THRU WINDOW. 10:30 - 12:00 1.50 STWHIP N DPRB WEXIT POOH WITH NOZZLE BHA. CMT SAMPLE IN DS LAB UCA AT 11:30 HRS. 12:00 -13:00 1.00 STWHIP P WEXIT MIU BHI MWD BHA #6 WITH 2.12 DEG MOTOR AND DPI 2.69" X 3.0" BI-CENTER BIT. NEW BIT. BIT #5. 13:00 - 15:00 2.00 STWHIP P WEXIT RIH WITH BHA #6 AT 90 FPM, NO PUMP. RIH TO 10,500 FT, 15:00 - 20:00 5.00 STWHIP N DPRB WEXIT WAIT ON CEMENT, NO COMPRESS STRENGTH IN UCA SAMPLE AT 15:00HR 50 PSI COMPRESS STRENGTH AT 17:45 HRS. SAMPLE IN UCAAT 11:30. CEMENT IN PLACE AT 08:30 HRS. 20:00 - 20:30 0.50 STWHIP P WEXIT LOG TIE-IN WITH GR. ADD 7 FT TO CTD. 20:30 - 21 :00 0.50 STWHIP P WEXIT ORIENT TF TO 70R. STOP PUMP. RIH AND EXIT WINDOW AT 10,695' WITH NO WT LOSS, CLEAN WINDOW. TAG TD AT 10,705 FT. 21:00 - 21:30 0.50 DRILL P PROD1 ORIENT TO 50-60R. 21 :30 - 23:30 2.00 DRILL P PROD1 DRILL AHEAD. DISPLACE WELL TO FLOPRO. 1.6 IN/1.4 OUT 3300 PSI FS. DRILL TO 10740'. FORMATION VERY HARD. 23:30 - 00:00 0.50 DRILL P PROD1 DRILL TO 10745'. (' ( Printed: 10/15/2001 12:45:12 PM Legal Well Name: Common Well Name: Event Name: Contractor Name: Rig Name: Date ) ( ( BP EXPLORATION Operations Summary Report 15-41 15-41 B REENTER+COMPLETE NORDIC CALISTA NORDIC 1 9/25/2001 00:00 - 02:00 From - To Hours Activity Code NPT PROD1 02:00 - 02:45 02:45 - 04:30 04:30 - 04:45 04:45 - 06:00 06:00 - 07:30 07:30 - 10:00 10:00 - 13:00 13:00 -15:15 15:15 -15:45 15:45 - 18:00 18:00 - 19:00 19:00 - 19:30 19:30 - 19:45 19:45 - 19:55 19:55 - 20:30 20:30 - 21 :00 2.00 DRILL P 0.75 DRILL P 1.75 DRILL 0.25 DRILL 1.25 DRILL P P P 1.50 DRILL P 2.50 DRILL P 3.00 DRILL P 2.25 DRILL 0.50 DRILL P P 2.25 DRILL N 1.00 DRILL 0.50 DRILL N N 0.25 DRILL 0.17 DRILL N N 0.58 DRILL N 0.50 DRILL N Phase PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 DPRB PROD1 DPRB PROD1 DPRB PROD1 DPRB PROD1 DPRB PROD1 DPRB PROD1 DPRB PROD1 Page 4 of 19 Start: 9/21/2001 Rig Release: 10/9/2001 Rig Number: Spud Date: 7/22/1994 End: 10/9/2001 Description of Operations DRILL AHEAD. 3300/1.6 IN/1.3 OUT 10-15 ROP. TF:30-50R ROP VERY SLOW. DRILL TO 10755'. ORIENT TO 60R. REACTIVE TORQUE AS HIGH AS 270 DEG, MAKING TF DIFFICULT TO HOLD. DRILL AHEAD TO 10775' ORIENT TO MAINTAIN 50-60R TF DRILL AHEAD. 3200 FS/1.5 IN/1.1 OUT TF:55R, ROP:30 FPH. SOME CHERT IN SAMPLES, FREQUENT STALLS WHILE DRILLING. DRILL TO 10791'. DRILLING, TF = 70R, 1.6/1.3 BPM, 3240 PSI, 24 FPH, INCL = 41 DEG. DRILLED TO 10, 820 FT. DRILLING, TF = 80R, 1.6/1.1 BPM, 3100 PSI, 20 FPH, INCL = 43 DEG. DRILLED TO 10,845 FT. DRILLING, TF = 80R, 1.6/0.8 BPM, 3100 PSI, 20 FPH, INCL = 50 DEG. DRILLED TO 10,870 FT. POOH FOR BIT UO MWD BHA. M/U NOZZLE AND STINGER TO LAY IN FORM-A-PLUG PILL BHA = 36.3 FT. RIH WITH BHA #7, 2.40" NOZZLE ON STINGER. CORRECTED DEPTH AT FLAG. ADDED 3 FT TO CTD. RIG UP DS PUMP VAN AND HARD LINE. Safety meeting with all hands on location (20) prior to pumping Forma Plug pill. Discussed material safety, muster point, pumping schedule, method of laying in pill, etc. PT pumpers hard lines, batch up gel pill. PUMP 10 BBLS OF FRESH WATER FLO PRO LEAD AHEAD OF FORMA PLUG PILL. RIH AND TAG TD ON DEPTH AT 10,870 FT. WINDOW WAS CLEAN. ON LINE PUMPING FORMAPLUG PILL, 11.0 PPG. GETTING 50% RETURNS. PUMP TOTAL OF 19.3 BBLS FAP, WITH 1/4 PPB CELLOFLAKE IN LAST 4 BBLS. PUMP 7 BBLS FRESH WATER FLOPRO SPACER. DISPLACE WITH FLOPRO. 1.3 BPM, 0.9 RETURNS, 3600 PSI AT 10 BBLS. 1.3 BPM, 1.0 RETURNS, 3400 PSI AT 22.7 BBLS DISPL. FAP AT NOZZLE. LAY IN FAP IN OPEN HOLE FROM TD OF 10870 FT AT 80%. PUMP 1 BPM, PULL AT 80 FPM, 1.0 BPM, 0.7 BPM RETURNS, 2800 PSI. LAY IN 2 BBLS IN OPEN HOLE. PARK NOZZLE AT 10,685 FT. 10 FT ABOVE WINDOW. CLOSE CHOKE. SQZ 12 BBLS FAP TO FORMATION. 1.0 BPM AT 3300 PSI. SLOW TO 0.5 BPM AT 2 BBLS SQZ. SIWHP = 1100 PSI, AT 4 BBL OUT, SIWHP = 1400 PSI, AT 8 BBL OUT, SIWHP = 1600 PSI, AT 12 BBL OUT. SIWHP = 1800 PSI AT 12.5 OUT. OPEN CHOKE. LAY IN FAP AT 1.0 BPM, PULL AT 50 FPM. TOP OF PLUG Printed: 10/15/2001 12:45:12 PM (' ( BP EXPLORATION Page 5 of 19 Operations Summary Report Legal Well Name: 1 5-41 Common Well Name: 15-41 B Spud Date: 7/22/1994 Event Name: REENTER+COMPLETE Start: 9/21/2001 End: 10/9/2001 Contractor Name: NORDIC CALISTA Rig Release: 10/9/2001 Rig Name: NORDIC 1 Rig Number: Date From - To Hours Activity Code NPT Phase Description of Operations 9/25/2001 20:30 - 21 :00 0.50 DRILL N DPRB PROD1 AT 10,524 FT. PULL TO SAFETY OF 10,000 FT. 21:00-21:30 0.50 DRILL N DPRB PROD1 10000', STOP COIL, PUMP AN ADDITIONAL 2 BBLS TO ENSURE COIL FREE FROM FAP PILL. WAIT ON FAP TO SET UP. 30 MIN. 21:30 - 21:45 0.25 DRILL N DPRB PROD1 RIH DRY TO 10575'. EXPECTED TOP OF GEL AT 10525'. DID NOT SEE ANY LOSS IN WEIGHT. PUH BACK TO SAFETY DEPTH. WILL WAIT AN ADDITIONAL 1/2 HOUR PRIOR TO CHECKING GEL AGAIN. 21:45 - 22:15 0.50 DRILL N DPRB PROD1 10000', WAIT ON GEL. 22:15 - 22:30 0.25 DRILL N DPRB PROD1 RIH DRY TO 10625'. DID NOT SEE ANY SIGNIFICANT WEIGHT LOSS. RIH WEIGHT WAS 9000#, AT 10619', SAW 500# LOSS FOR 2', THEN BACK TO NORMAL. AT MI RECCOMENDATION, WILL WAIT AN ADDITIONAL 1/2 HOUR. 22:30 - 23:00 0.50 DRILL N DPRB PROD1 10000', WAIT ON GEL. 23:00 - 23:15 0.25 DRILL N DPRB PROD1 RIH DRY TO 10650'. DID NOT SEE ANY SIGNIFICANT WEIGHT LOSS. AT MI RECCOMENDATION, WILL WAIT AN ADDITIONAL 1 HOUR. 23:15 - 00:00 0.75 DRILL N DPRB PROD1 10000', WAIT ON GEL. 9/26/2001 00:00 - 00:15 0.25 DRILL N DPRB PROD1 10000', WAIT ON GEL. 00:15 - 00:30 0.25 DRILL N DPRB PROD1 RIH DRY. AT 10680', TAGGED FIRM GEL. WAS ABLE TO RUN THROUGH IT WITH 2000# WEIGHT LOSS. PICKED UP TO ABOVE EXPECTED TOP OF GEL. 00:30 - 00:50 0.33 DRILL N DPRB PROD1 PU TO 10500', KICK ON PUMPS AT 2 BPM, 3500 PSI CTP. GETTING 1 FOR 1 RETURNS. RIH AT 15 FPM TO BREAK UP ANY GEL LEFT IN WELLBORE. RAN DOWN TO 10705', SAW 500# WEIGHT LOSS FROM 10680' TO 10705', PROBABLE FAP GEL. 00:50 - 02:30 1.67 DRILL N DPRB PROD1 POOH, HAD 1 FOR 1 RETURNS THE ENTIRE TIME. NO LOSSES. 02:30 - 03:00 0.50 DRILL N DPRB PROD1 LAY DOWN NOZZLE BHA, PICK UP BHA #8. HUGHES BICENTER BIT, 2.12 DEG MOTOR TO COMPLETE BUILD SECTION. 03:00 - 04:00 1.00 DRILL N DPRB PROD1 JET ON EQUALIZING SUB WASHED OUT. SAME FOR BACKUP. WAIT FOR SPARE FROM DEADHORSE. 04:00 - 04:25 0.42 DRILL P PROD1 RESUME RIG UP OF BHA #8. 04:25 - 06:30 2.08 DRILL P PROD1 RIH WITH BHA #8. SHALLOW HOLE TEST OF MWD PASSED OK AT 1140'. 06:30 - 07:00 0.50 DRILL P PROD1 TIED-IN WITH GR, ADDED 11 FT TO CTD. 07:00 - 07:30 0.50 DRILL P PROD1 RAN THRU WINDOW WITH 150R TF. CLEANOUT FORMAPLUG TO TD. TAG TD ON DEPTH AT 10870 FT. FULL RETURNS 1.5 /1.5 BPM. 07:30 - 08:00 0.50 DRILL P PROD1 ORIENT ON BOTTOM, 8 CLICKS TO GET TO 85R TF. 1.5/1.3 BPM RETURNS AFTER ORIENTING. 08:00 - 10:00 2.00 DRILL P PROD1 DRILLING, TF = 85R, 1.5/1.3 BPM, 3200 PSI. 25 FPH, 55 DEG INCL. DRILLED TO 10,950 FT. LOSSES SLOWLY INCREAS ING. NOW AT 0.4 BPM. 10:00 -10:30 0.50 DRILL P PROD1 ORIENT AROUND. 10:30 -12:40 2.17 DRILL P PROD1 DRILLING, TF = 60R, 1.5/1.1 BPM, 3200 PSI, 40 FPH, 58 DEG INCL. Printed: 10/15/2001 12:45:12 PM ( ( BP EXPLORATION Page 6 of 19 Operations Summary Report Legal Well Name: 15-41 Common Well Name: 15-41 B Spud Date: 7/22/1994 Event Name: REENTER+COMPLETE Start: 9/21/2001 End: 10/9/2001 Contractor Name: NORDIC CALISTA Rig Release: 10/9/2001 Rig Name: NORDIC 1 Rig Number: Date From - To Hours Activity Code NPT Phase Description of Operations 9/26/2001 10:30 - 12:40 2.17 DRILL P PROD1 DRILLED TO 11,020 ft. 12:40 - 13:30 0.83 DRILL P PROD1 WIPER TRIP TO WINDOW. 13:30 - 15:20 1.83 DRILL P PROD1 DRILLING, TF = 10R, 1.5/1.1 BPM, 3200 PSI, 80 FPH, 82 DEG INCL. DRILLED TO 11,123 FT. LOST ALL RETURNS. POSSIBLE FAULT. 15:20 - 15:50 0.50 DRILL P PROD1 WIPER TRIP TO WINDOW, PARTIAL RETURNSDURING WIPER TRIP AND BACK ON BOTTOM, 1.5 BPM, 0.5 BPM RETURNS. 15:50 - 16:00 0.17 DRILL P PROD1 DRILLING WITH PARTIAL RETURNS, 1.5 I 0.6 BPM. LOST ALL RETURNS AGAIN AT 11,131 FT. 16:00 - 17:00 1.00 DRILL P PROD1 ORIENT TF TO 1 OOR. 17:00 -19:15 2.25 DRILL P PROD1 DRILLING, TF = 100R, 1.6/0.8 BPM, 3000 PSI, 60 FPH, INCL = 96 DEG. BETTER RETURNS AS WE DRILL AHEAD. LANDED WELL AT 11,120 FT AT 8696 FT TVDSS, 6 FT BELOW WELL PLAN 19:15 - 19:45 0.50 DRILL P PROD1 11242', WIPER TRIP TO SHOE. 19:45 - 20:20 0.58 DRILL P PROD1 RESUME DRILLING, 1.7 BPM IN, 0.8 BPM OUT. LESS THAN 50% RETURNS. 3650 PSI CTP, TF 140R. 20:20 - 22:10 1.83 DRILL P PROD1 11278', TURN SECTION IS COMPLETED. POOH TO PICK UP NOZZLE FOR CEMENTING LOSS ZONES. 22:10 - 23:00 0.83 DRILL P PROD1 LAY DOWN BHA #8, PICK UP CEMENTING NOZZLE. 23:00 - 00:00 1.00 DRILL N DPRB PROD1 RIH WITH CEMENTING NOZZLE. 9/27/2001 00:00 - 01 :00 1.00 DRILL N DPRB PROD1 CONTINUE RIH WITH NOZZLE. 01:00 - 01:30 0.50 DRILL N DPRB PROD1 10700', KICK ON PUMPS, BEGIN MUD SWAP, TAKING MUD TO VAC TRUCK, DISPLACING WELL TO KCL. PUMPING 1.7, GETTING BACK 1.0. RAN THROUGH LOSS ZONE AND RETURNS DROPPED TO 0.6 BACK FOR 1.7 PUMPED. PULL TO SHOE. 01:30-02:15 0.75 DRILL N DPRB PROD1 STANDBY AT SHOE CIRCULATING KCL. 1.7 IN, 0.6 OUT. RIG UP CEMENTERS. 02:15 - 02:35 0.33 DRILL N DPRB PROD1 SAFETY MEETING PRIOR TO PUMPING CEMENT. 02:35 - 02:50 0.25 DRILL N DPRB PROD1 PT HARDLINES TO 4000 PSI 02:50 - 04:00 1.17 DRILL N DPRB PROD1 PUMP CEMENT JOB AS FOLLOWS; 2 BBLS FRESH H2O SPACER, 15 BBLS NEAT 13.8 PPG BENTONITE CEMENT, 20 BBLS CEMENT WITH 10 PPB AGGREGATE, 4.4 BBLS CEMENT WITH AGG AND 1/4 PPB CELAFLAKE, PROBLEMS WITH BATCH MIXER, 1.4 BBLS NEAT CEMENT, 2 BBLS FRESH H2O. DISPLACE WITH RIG PUMPS. LAY IN CEMENT TO WINDOW. SI CHOKE. SQEEZED 9.3 BBLS INTO LOSS ZONES. SIWHP UP TO 1800 PSI. LAY IN REMAINDER OF CEMENT. PUH TO SAFETY DEPTH. TOTAL OF 40.8 BBLS CEMENT PUMPED. NOTE - CEMENT DENSITY ON RIG MICROMOTION WAS 14.5 PPG WHILE PUMPING NEAT CEMENT. 04:00 - 04:30 0.50 DRILL N DPRB PROD1 7500', STOP AT SAFETY DEPTH. WAIT ON CEMENT. 04:30 - 05:50 1.33 DRILL N DPRB PROD1 CLEANOUT CEMENT FROM TUBING GETTING 1 FOR 1 RETURNS. FOUND TOP OF CEMENT WHERE EXPECTED AT 8000'. CLEANOUT TO 10680', AND HIT HARD CEMENT. WASHED ON IT FOR 15 MINUTES, AND COULD NOT GET PAST. Printed: 10/15/2001 12:45:12 PM BP EXPLORATION Page 7 of 19 Operations Summary Report Legal Well Name: 15-41 Common Well Name: 15-41 B Spud Date: 7/22/1994 Event Name: REENTER+COMPLETE Start: 9/21/2001 End: 10/9/2001 Contractor Name: NORDIC CALISTA Rig Release: 10/9/2001 Rig Name: NORDIC 1 Rig Number: Date From - To Hours Activity Code NPT Phase Description of Operations 9/27/2001 05:50 - 07:00 1.17 DRILL N DPRB PROD1 PUMP 40 BBL SPACER OF KCL, SWAP TO MUD. CIRC WELL TO FLOPRO. 07:00 - 08:40 1.67 DRILL N DPRB PROD1 POOH. 08:40 - 09:15 0.58 DRILL N DPRB PROD1 M/U MWD BHA #10, 2.13 DEG MOTOR, HTC BI-CENTER BIT#6 RR1. 09:15 -11:30 2.25 DRILL N DPRB PROD1 RIH WITH BHA#10. 11 :30 - 11 :40 0.17 DRILL N DPRB PROD1 TIED-IN WITH GR. ADD 11 FT TO CTD. SWAP WELL TO 1 % KCL WATER WITH FRICTION REDUCER. 11 :40 - 13:00 1.33 DRILL N DPRB PROD1 TAG CMT TOP AT 10,693 FT. STALL SEVERAL TIMES OVER FIRST FOOT. DRILL FIRM CMT TO 10,710 FT WITH FULL RETURNS, 1.7/1.7 BPM. 13:00 - 16:00 3.00 DRILL N DPRB PROD1 DRILL FIRM CEMENT. 110 FPH, 1500 WOB, 1.8 /1.8 BPM, TF = 60R. DRILL 110 FPH TO 10,731 FT. STALL SEVERAL TIMES AT 10,731 FT, NO PROGRESS. STALL MOTOR WITH NO WOB. BHA STILL ACROSS WINDOW AT 10690 -10695 FT. PUMP 10 BBL FLOPRO PILL TO CLEAN HOLE. NO DIFFERENCE. STALL EACH TIME AT 10,731 FT. NO MOTOR WORK BEFORE STALL AND NO WOB. NO PROGRESS IN 3 HOURS. 16:00 - 17:45 1.75 DRILL N DPRB PROD1 POOH TO INSPECT BHA. 17:45 -19:15 1.50 DRILL N DPRB PROD1 INSPECT BHA, BIT-3 CHIPPED TEETH FROM WINDOW, MOTOR OK, BLEED PORT OK, NO MARKS ON BHA. NO PROBLEMS APPARENT WITH BHA. C/O BIT, MOTOR AND BAKER MHA. 19:15-21:25 2.17 DRILL N DPRB PROD1 RIH WITH BHA #11, 2.1 DEG MOTOR, BIT #7 - DPI BI-CENTER, SN 1963816. SHALLOW HOLE TEST OF MWD AND ORIENTER PASSED OK AT 2500'. 21:25 - 21:50 0.42 DRILL N DPRB PROD1 LOG TIE IN PASS DOWN. MAKE +9' CORRECTION. 21:50 - 22:10 0.33 DRILL N DPRB PROD1 ORIENT TO 60R, SAME TOOL FACE THAT THE ORIGINAL HOLE WAS DRILLED AT. 22:10 - 22:30 0.33 DRILL N DPRB PROD1 TAG UP AT 10734'. ATTEMPT TO START DRILLING. HITTING HARD STRINGER, SAME AS BEFORE. NOT GETTING GOOD STALLS. MOTOR APPEARS TO BE STALLING, BUT ISN'T GIVING A DISTINCTIVE QUICK STALL. WILL POOH TO EXAMINE BIT AND MOTOR. CHECK FOR LEAKS IN BHA, AND POSSIBLY RUN BACK IN WITH A D331 DSM TO MILL HARD STREAK. 22:30 - 00:00 1.50 DRILL N DPRB PROD1 POOH. 9/28/2001 00:00 - 01 :30 1.50 DRILL N DPRB PROD1 TAG UP AT SURFACE. PT BHA #11, FOUND VERY SMALL CRACK IN UBHO HOUSING. CHANGE OUT UBHO. CHECK BIT AND MOTOR. FOUND BIT SEVERELY DAMAGED. 4 CUTTERS ON PILOT SECTION CHIPPED OR MISSING. 4 CUTTERS ON GAUGE SECTION BADLY CHIPPED. FACE OF BIT RINGED. DAMAGE APPEARS TO HAVE COME FROM JUNK OR POSSIBLY OTHER HARD DEBRIS ON BOTTOM. GIVEN SHORT TIME THIS NEW BIT WAS ON BOTTOM ON THE LAST RUN, THE DAMAGE APPEARS TO BE QUITE BAD. 01 :30 - 02:25 0.92 DRILL N DPRB PROD1 WAIT ON NEW MOTOR FROM DEADHORSE. ( ( Printed: 10/15/2001 12:45:12 PM BP EXPLORATION Page 8 of 19 Operations Summary Report Legal Well Name: 15-41 Common Well Name: 15-41 B Spud Date: 7/22/1994 Event Name: REENTER+COMPLETE Sta rt: 9/21/2001 End: 10/9/2001 Contractor Name: NORDIC CALISTA Rig Release: 10/9/2001 Rig Name: NORDIC 1 Rig Number: Date From - To Hours Activity Code NPT Phase Description of Operations 9/28/2001 02:25 - 03:00 0.58 DRILL N DPRB PROD1 MAKE UP NEW MOTOR AT 2.12 DEG, D331 DSM, AND MWD PACKAGE. BHA #12. 03:00 - 05:00 2.00 DRILL N DPRB PROD1 RIH WITH BHA #12,2.12 DEG MOTOR, D331 DSM. SHALLOW HOLE TEST OK. 05:00 - 05:10 0.17 DRILL N DPRB PROD1 TAG BOTTOM, MAKE =7' DEPTH CORRECTION. ORIENT 75R 05:10 - 06:00 0.83 DRILL N DPRB PROD1 BEGIN MILLING JUNK AT 10732.7'. 2000 PSI CTP, 1.5 IN, 1.5 OUT. VERY GRABBY AND LOTS OF STALLS AT FIRST. AFTER 20 MINUTES, IT SMOOTHED OUT. MADE HOLE TO 10734.9 AT 40 FPH. HARD DRILLING AT 10734.9', Rap DROPPED TO O. LOOKING AT INCLINATION WE ARE AT 11.34 DEG. SHOULD BE 15 DEG IF MWD TOOL IS 10' OUT WINDOW. ALSO, TOP OF CEMENT RETAINER WAS SET AT 10738'. IT IS PROBABLE THAT WE HAVE NOT EXITED THE WINDOW, AND HAVE DRILLED UP THE CEMENT RAMP TO THE TOP OF THE CEMENT RETAINER 06:00 - 06:20 0.33 DRILL N DPRB PROD1 CIRCULATE 16 BBL FLO PRO SWEEP TO CLEAN DEBRIS OOH. 06:20 - 08:30 2.17 DRILL N DPRB PROD1 POOH 08:30 - 09:00 0.50 DRILL N DPRB PROD1 UO MWD BHA. 09:00 - 10:00 1.00 DRILL N DPRB PROD1 GREASE INJECTOR CHAINS. 10:00 -15:30 5.50 DRILL P PROD1 PERFORM WEEKLY BOPE PRESS / FUNCTION TEST. SEND REPORT TO AOGCC. 15:30 -16:15 0.75 DRILL N DPRB PROD1 M/U BAKER 2 5/8" DB UNDERREAMER BHA DRESSED WITH 4.22" BLADES. 16:15 - 18:15 2.00 DRILL N DPRB PROD1 RIH WITH BHA #13 18:15 -18:45 0.50 DRILL N DPRB PROD1 STOP AT 10580 FT. ADD 10 FT CTD [AVE. DEPTH CaRR]. CIRC. OPEN UR BLADES, RIH SLOW. TAG CMT AT 10620', DRILL CEMENT WITH UR 18:45 - 21:00 2.25 DRILL N DPRB PROD1 10623', STALL. CONTINUE UR CEMENT. SEVERAL STALLS AT 10625', REDUCE ROP BUT SLOW GETTING STARTED. TOOK A WHILE, BUT WE ARE ABLE TO DRILL AT ABOUT 24 FPH. 21 :00 - 22:00 1.00 DRILL N DPRB PROD1 10640', UPDATE AT 21:00, UR CEMENT SLOWWWWWLY. 1.81N, 1.8 OUT. 2850 PSI CTP. 22:00 - 23:00 1.00 DRILL N DPRB PROD1 10654', PUMP 15 BBL SWEEP OF 2# BIOZAN. 23:00 - 00:00 1.00 DRILL N DPRB PROD1 10667' AT 23:00 - 10674' AT 24:00. CONTINUING TO UR CEMENT. 9/29/2001 00:00 - 01 :00 1.00 DRILL N DPRB PROD1 CONTINUE UR CEMENT FROM 10675'. 01 :00 - 02:00 1.00 DRILL N DPRB PROD1 UPDATE AT 01:00, CONTINUING TO UR CEMENT AT 10683'. 02:00 - 03:00 1.00 DRILL N DPRB PROD1 UPDATE AT 02:00, CONTINUING TO UR CEMENT AT 10693'. IN MIDDLE OF WINDOW, NOT SEEING ANY PROBLEMS. MADE IT THROUGH WINDOW OK. NO BAD AREAS, AND ONLY A FEW STALLS. 03:00 - 04:00 1.00 DRILL N DPRB PROD1 UPDATE AT 03:00. CONTINUING TO UR CEMENT AT 10705'. 04:00 - 05:00 1.00 DRILL N DPRB PROD1 UPDATE AT 04:00. CONTINUING TO UR CEMENT AT 10719'. NO LOSSES. 100% RETURNS. 05:00 - 05:10 0.17 DRILL N DPRB PROD1 AT 10733', AS DEEP AS WE DARE GO WITHOUT HITTING TOP OF BRIDGE PLUG. PUMP 2# BIO SWEEP. 05:10- 06:30 1.33 DRILL N DPRB PROD1 SWEEP AROUND, START BACKREAM UP 06:30 - 08:30 2.00 DRILL N DPRB PROD1 REAM DOWN AT 5 FPM TO 10731 FT. BACK REAM UP TO (' ( Printed: 10/15/2001 12:45:12 PM BP EXPLORATION Page 9 of 19 Operations Summary Report Legal Well Name: 15-41 Common Well Name: 15-41 B Spud Date: 7/22/1994 Event Name: REENTER+COMPLETE Start: 9/21/2001 End: 10/9/2001 Contractor Name: NORDIC CALISTA Rig Release: 10/9/2001 Rig Name: NORDIC 1 Rig Number: Date From - To Hours Activity Code NPT Phase Description of Operations 9/29/2001 06:30 - 08:30 2.00 DRILL N DPRB PROD1 10,600 FT, 08:30 - 09:45 1.25 DRILL N DPRB PROD1 POOH. 09:45 - 10:15 0.50 DRILL N DPRB PROD1 UO MOTOR AND UNDERREAMER. M/U CMT NOZZLE. 10:15 - 12:15 2.00 DRILL N DPRB PROD1 RIH WITH CMT NOZZ BHA #14 12:15 - 12:30 0.25 DRILL P PROD1 SAFETY MEETING, REVIEW CMTG PROCEDURE AND HAZARDS. 12:30 - 13:00 0.50 DRILL N DPRB PROD1 PRESS TEST CMT LINE. 13:00 - 14:15 1.25 DRILL N DPRB PROD1 CIRC BOTTOMS UP AT 3.3 BPM TO LIFT FILL SEEN AT PBTD. TAG PBTD AT 10733 FT. 14:15 -15:00 0.75 DRILL N DPRB PROD1 STAGE 8 BBLS, 17 PPG, G CEMENT SLURRY, [17.2 PPG AT DESIOMETER]. DISPLACE WITH RIG PUMPS, 2.3 BPM, 2700 PSI, FULL RETURNS. NOZZAT 10,731 FT. CIRC 2 BBLS OUT NOZZAND LAY IN 6 BBLS AT 80%. TOC = 10,300 FT. PULL TO 10,050 FT. 15:00 -15:30 0.50 DRILL N DPRB PROD1 CIRC ABOVE CEMENT PLUG 15 MIN. RIH DRESS OFF TOP OF CMT PLUG TO 10,630 FT AT 2.9 BPM, 3400 PSI. 15:30 - 17:30 2.00 DRILL N DPRB PROD1 POOH CHASING CEMENT TO SURFACE. 17:30 - 18:30 1.00 DRILL N DPRB PROD1 UO BHA. CUT OFF 203 FT OF CT FOR FATIGUE MAINT. WELD ON CTC. PULL TEST W/ 30K. 18:30 - 19:15 0.75 DRILL N DPRB PROD1 REPLACE PACKOFFS. 19:15 - 20:10 0.92 DRILL N DPRB PROD1 MAKE UP PILOT HOLE BHA. D331 DSM, 1.75 DEG WF MOTOR. MWD. 20:10 - 20:30 0.33 DRILL N DPRB PROD1 RIH WITH BHA #15 TO DRILL PILOT HOLE. 20:30 - 21:15 0.75 DRILL N DPRB PROD1 SHALLOW HOLE TEST. ORIENTER IS NOT WORKING. POOH TO CHANGE ORIENTER. 21:15 - 22:45 1.50 DRILL N DPRB PROD1 CHANGE OUT ORIENTER. 22:45 - 23:45 1.00 DRILL N DPRB PROD1 RIH. SHALLOW HOLE TEST AT 2500', MWD AND ORIENTER PASSED OK. 23:45 - 00:00 0.25 DRILL N DPRB PROD1 LOG TIE IN PASS AT 10540'. 9/30/2001 00:00 - 01 :40 1.67 DRILL N DPRB PROD1 CONTINUE WITH TIE IN PASS. AT 10540'. MAKE +5' CORRECTION, THEN RELOG TO CONFIRM TIE IN. 01 :40 - 01 :50 0.17 DRILL N DPRB PROD1 ORIENT TO 90L. 01 :50 - 04:25 2.58 DRILL N DPRB PROD1 TAG TOP OF CEMENT AT 10626', BEGIN DRILLING PILOT HOLE AT 90L. PUMPING 1.6/1.62980 PSI. ROP=28 FPH. 04:25 - 05:00 0.58 DRILL N DPRB PROD1 DRILL AT 90L TOOL FACE TO 10700', PICK UP ORIENT AROUND TO 90R. MILL RAMP 10700'-10704'. STARTED GETTING TOOL FACE JUMPING AROUND A BIT. CALLED THAT THE END OF THE RAMP. ACTUAL TOOL FACE WITH REACTIVE WAS 76R FOR MOST OF WINDOW. NO LOSSES AT ALL DURING THIS MILLING OPERATION. (UPPER WINDOW CEMENT JOB IS HOLDING HYDRAULIC ISOLATION) 05:00 - 07:00 2.00 DRILL N DPRB PROD1 PUMP 5 BBL BIO SWEEP AT BOTTOM, POOH 07:00 - 07:30 0.50 DRILL N DPRB PROD1 C/O MOTOR AND MILL. MIU MWD BHA #16 WITH 2.5 DEG FIXED MOTOR AND 2.80" WINDOW MILL. 07:30 - 09:30 2.00 DRILL N DPRB PROD1 RIH WITH MWD BHA#16 TO MILL WINDOW. SHALLOW TEST. RIH. 09:30 - 10:00 0.50 DRILL N DPRB PROD1 LOG TIE-IN WITH GR. ADDED 4 FT CTD. 10:00 - 10:20 0.33 DRILL N DPRB PROD1 ORIENT TF TO 90R. 10:20 - 10:40 0.33 DRILL N DPRB PROD1 TAG LINER AT 10706.6 FT. FLAG CT. PICK UP 1 FT. ( ( Printed: 10/15/2001 12:45:12 PM BP EXPLORATION Page 10 of 19 Operations Summary Report Legal Well Name: 1 5-41 Common Well Name: 1 5-41 B Spud Date: 7/22/1994 Event Name: REENTER+COMPLETE Start: 9/21/2001 End: 10/9/2001 Contractor Name: NORDIC CALISTA Rig Release: 10/9/2001 Rig Name: NORDIC 1 Rig Number: Date From - To Hours Activity Code NPT Phase Description of Operations 9/30/2001 10:20 - 10:40 0.33 DRILL N DPRB PROD1 START TIME MILLING AT 10:40 HRS AT 10,705.6 FT. TF = 90R. 1.8 /1.8 BPM, 3330 PSI. 10:40 - 14:15 3.58 DRILL N DPRB PROD1 TIME MILLING AS PER SCHEDULE. 1.8/1.8 BPM, 3140 PSI, 118RTF. MILLED TO 10,706.3 FT. 14:15 - 16:00 1.75 DRILL N DPRB PROD1 TIME MILLING WINDOW. 1.8/1.8 BPM, 3260 PSI, 118R TF. 1000 WOB. MILLED TO 10,706.7 FT. ADDED 10 BBL BIOZAN AND FRICTION REDUCER. 16:00 - 18:00 2.00 DRILL N DPRB PROD1 TIME MILLING, 1.8/1.8 BPM, 2600 PSI, 121 RTF. 2000 WOB MILLED TO 10,707.4 FT. 18:00 -19:00 1.00 DRILL N DPRB PROD1 TIME MILLING, 1.8/1.8 BPM, 121R TF, 2000 WOB MILLED TO 10707.9 FT. 19:00 - 20:00 1.00 DRILL N DPRB PROD1 19:00 UPDATE. 10707.9', MILLING AHEAD. BEGINING TO TAKE WEIGHT. LAST TENTH WE HAD WOB OF 2200 LBS. TF 120R 20:00 - 21 :00 1.00 DRILL N DPRB PROD1 20:00 UPDATE. 10708.5', MILLING AHEAD. LAST TENTH WE HAD WOB OF 2600 LBS. TF112R 21:00 - 21:40 0.67 DRILL N DPRB PROD1 21 :00 UPDATE. 10709.3, MILLING AHEAD. LAST TENTH WE HAD WOB OF 2900 LBS. TF 115 R. SEEING METAL DURING ENTIRE OPERATION. GETTING SOME FORMATION SAND NOW. 21 :40 - 22:00 0.33 DRILL N DPRB PROD1 BOTTOM OF WINDOW AT 10709.9'. DRILL AN ADDITIONAL 10' OF FORMATION TO 10720'. DRILLING AT 114R, 22:00 - 23:00 1.00 DRILL N DPRB PROD1 UPDATE AT 22:00 AT 10711.1', WOB=4300 LBS, TF=96R, 1.8/1.8, 3350 PSI CTP. ABLE TO DRILL AHEAD AT 6-7 FPH. 23:00 - 23:45 0.75 DRILL N DPRB PROD1 MILLING FORMATION AT 10716.8' AT 22:00. ROP 7 FPH, TF=98 R. 23:45 - 00:00 0.25 DRILL N DPRB PROD1 10721', LET MOTOR DRILL OFF, PUMP 5 BBL SWEEP OF 2# BIOZAN. 10/1/2001 00:00 - 00:15 0.25 DRILL N DPRB PROD1 CONTINUE TO PUMP BIOZAN SWEEP PRIOR TO POH. 00:15 - 01:45 1.50 DRILL N DPRB PROD1 POOH WITH WINDOW MILLING BHA. 01 :45 - 02:20 0.58 DRILL N DPRB PROD1 TAG UP, LAY DOWN WINDOW MILLING BHA. MILL RECOVERED AT 2.79"GO, 2.78" NO GO. SWIRL PATTERN ON NOSE OF MILL INDICATING IT CROSSED CENTER LINE. MAKE UP NEXT MILL TO DRESS WINDOW. l' CRAYOLA MILL WITH METAL MUNCHER BUTTONS 2.78" OD. 1.75 DEG ADJUSTABLE BENT MOTOR. 02:20 - 04:20 2.00 DRILL N DPRB PROD1 RIH WITH BHA 17 TO DRESS WINDOW. 04:20 - 04:45 0.42 DRILL N DPRB PROD1 LOG TIE IN PASS DOWN FROM 10540'. MAKE +6' CORRECTION. 04:45 - 05:25 0.67 DRILL N DPRB PROD1 RIH DRY, TAG UP AT TOP OF WINDOW 10704', ORIENT TO 90R, BRING ON PUMPS TO MINIMUM, RIH HUNG UP AGAIN AT 10705'. PU, BRING UP RATE TO 1.7, RIH AS FAST AS PRACTICAL. HUNG UP AT TOP OF WINDOW 10705'. CONTINUE TO WORK TOP OF WINDOW. TRIED ABOUT 15 TIMES, CONTINUE TO STALL AT THE SAME PLACE. POOH TO PICK UP LESS AGGRESSIVE CRA YOLA MILL WITH NO METAL MUNCHER BUTTONS. 05:25 - 07:00 1.58 DRILL N DPRB PROD1 POOH FOR LESS AGGRESSIVE MILL. 07:00 - 07:15 0.25 DRILL N DPRB PROD1 CIO CRA YOLA MILL TO BAKER CTC CRA YOLA MILL WITH ( (' Printed: 10/15/2001 12:45:12 PM BP EXPLORATION Page 11 of 19 Operations Summary Report Legal Well Name: 1 5-41 Common Well Name: 1 5-41 8 Spud Date: 7/22/1994 Event Name: REENTER+COMPLETE Start: 9/21/2001 End: 10/9/2001 Contractor Name: NORDIC CALISTA Rig Release: 10/9/2001 Rig Name: NORDIC 1 Rig Number: Date From - To Hours Activity Code NPT Phase Description of Operations 10/1/2001 07:00 - 07:15 0.25 DRILL N DPRB PROD1 NO METAL MUNCHER BUTTONS. 2.78" MILL. 07:15 - 07:30 0.25 DRILL P PROD1 SAFETY MEETING. REVIEW DRIVING HAZARDS WITH ICY ROADS. 07:30 - 09:00 1.50 DRILL N DPRB PROD1 RIH WITH MILL TO DRESS WINDOW. SHALLOW TEST. ORIENTER FAILED. POOH. ORIENTER HAD SMALL PIECE OF CMT IN IT. 09:00 - 09:30 0.50 DRILL N DPRB PROD1 C/O SPERRY ORIENTER. 09:30 - 12:00 2.50 DRILL N DPRB PROD1 RIH WITH MILL TO DRESS WINDOW. SHALLOW TEST. OK. RIH. 12:00 - 12:15 0.25 DRILL N DPRB PROD1 TIED-IN WITH GR. ADDED 4 FT CTD. 12:15 -12:20 0.08 DRILL N DPRB PROD1 ORIENT TF TO 90R. 12:20 - 12:40 0.33 DRILL N DPRB PROD1 DEPTH INDICATOR SLIPPED FOOTAGE WHILE RIH. 12:40 -13:10 0.50 DRILL N RREP PROD1 REPAIR INJECTOR HEAD CT DEPTH MEASURING WHEEL, TIGHTEN CHAIN. 13:10 - 13:30 0.33 DRILL N DPRB PROD1 RE-TIE-IN WITH GR, ADDED 4 FT TO CTD. 13:30 - 16:30 3.00 DRILL N DPRB PROD1 RIH AND STALL AT 10,707.7 AND 10707.9 FT. TF = 90R. STALLED 4 TIMES BEFORE EXITING WINDOW. REAM IN HOLE TO 10,716.4 FT AND STALL. BACK REAM 10 FPH. FROM 10709 -10703', RIH AND REAM FORMATION TO 10719 FT. BACK REAM 10709-10704 FT. DRIFT WITH NO PUMP. WINDOW OK. REAM DOWN TO 10,719 FT. STACK WT. ORIENT 3 CLICKS AND BACKREAM AT 130R TF. SWAP TO FLOPRO WHILE BACKREAMING. FULL RETURNS AT START. FLAG CT AT 10,500 FT EOP. FLOPRO AT SURFACE STILL HAVE FULL RETURNS, 1.6/1.6 BPM, 3100 PSI. 16:30 -18:00 1.50 DRILL N DPRB PROD1 POOH WITH MILLING BHA. 18:00 -18:15 0.25 DRILL P PROD1 SAFETY MEETING WITH DAY AND NIGHT CREWS. REVIEW REPORTING PROCEDURE. 18:15-19:30 1.25 DRILL N DPRB PROD1 LlO MOTOR AND MILL. MILL GAUGED AT 2.73". M/U MWD DRILLING BHA WITH 2.1 DEG MOTOR AND 2.69 - 3.0" DPI BI-CENTER BIT. CHANGE OUT MWD BATTERIES AND MHA. 19:30 - 21:30 2.00 DRILL N DPRB PROD1 RIH WITH BHA #18, SHALLOW HOLE TEST OK. CONTINUE RIH. 21 :30 - 22:25 0.92 DRILL N DPRB PROD1 CATCH EOP FLAG FROM LAST RUN, TAG BOTTOM EXACTLY SAME AS LAST RUN AT 10719'. ORIENT TO 90R. 22:25 - 23:00 0.58 DRILL N DPRB PROD1 BEGIN DRILLING BUILD AND TURN. 1.6/1.6, 3100 PSI FREE SPIN, 100% RETURNS. 23:00 - 23:59 0.98 DRILL N DPRB PROD1 10731', DRILLING SLOW, ONLY ABOUT 30 FPH. GETTING SOME LOSSES NOW. 1.6 IN, 1.4 BACK. TF 90R. 23:59 - 00:00 0.02 DRILL N DPRB PROD1 10754' AT MIDNIGHT. LOSSES HAVE HEALED, GETTING 1 FOR 1 RETURNS. 10/2/2001 00:00 - 00:45 0.75 DRILL N DPRB PROD1 DRILL BUILD SECTION FR 10754'. 1.6 IN/1.6 OUT, 3250 PSI, NO LOSSES, 00:45 - 01:10 0.42 DRILL N DPRB PROD1 GETTING LESS REACTIVE NOW, ORIENT AROUND TO HOLD 90r AGAIN. 01:10 - 02:00 0.83 DRILL N DPRB PROD1 RESUME DRILLING FR 10763'. 1.6/1.5,3320 PSI. SLIGHT LOSSES OF 0.1 BPM. 02:00 - 02:50 0.83 DRILL N DPRB PROD1 CAN'T HOLD 90R, CAN'T GET RELIABLE CLICKS. MESS WITH ORIENTER FOR AND HOUR, THEN TRIP FOR NEW ONE. { (' Printed: 10/15/2001 12:45:12 PM Legal Well Name: Common Well Name: Event Name: Contractor Name: Rig Name: 10/2/2001 10/3/2001 {' ( BP EXPLORATION Operations Summary Report 1 5-41 15-41 B REENTER+COMPLETE NORDIC CALISTA NORDIC 1 Date From - To Hours Activity Code NPT Phase 02:50 - 04:15 04:15 - 04:45 04:45 - 06:30 06:30 - 07:30 07:30 - 09:30 09:30 - 11 :30 11 :30 - 12:30 12:30 -14:30 14:30 -15:30 15:30 -16:00 16:00 - 16:30 16:30 - 17:45 17:45 - 18:30 18:30 -18:45 18:45 - 19:15 19:15 - 19:30 19:30 - 20:30 20:30 - 20:35 20:35 - 21 :45 21 :45 - 22:45 22:45 - 00:00 00:00 - 02:00 02:00 - 04:45 1.42 DRILL 0.50 DRILL 1.75 DRILL 1.00 DRILL 2.00 DRILL 2.00 DRILL 1.00 DRILL 2.00 DRILL 1.00 DRILL 0.50 DRILL 0.50 DRILL 1.25 DRILL 0.75 DRILL 0.25 DRILL 0.50 DRILL 0.25 DRILL 1.00 DRILL 0.08 DRILL 1.17 DRILL 1.00 DRILL 1.25 DRILL 2.00 DRILL 2.75 DRILL N N DPRB PROD1 DPRB PROD1 N DPRB PROD1 N N DPRB PROD1 DPRB PROD1 N DPRB PROD1 N DPRB PROD1 N DPRB PROD1 N DPRB PROD1 N DPRB PROD1 N DPRB PROD1 N DPRB PROD1 N DPRB PROD1 N DPRB PROD1 N DPRB PROD1 N N N N N DPRB PROD1 DPRB PROD1 DPRB PROD1 DPRB PROD1 DPRB PROD1 N DPRB PROD1 N DPRB PROD1 N DPRB PROD1 Page 12 of 19 Start: 9/21/2001 Rig Release: 10/9/2001 Rig Number: Spud Date: 7/22/1994 End: 10/9/2001 Description of Operations 10770', POOH FOR ORIENTER. TAG UP AT SURFACE, CHANGE OUT ORIENTER. INSPECT BIT. BIT IN GREAT SHAPE, RIH WITH BHA #19. SHALLOW HOLE TEST OF MWD AND ORIENTER PASSED AT 2500'. RIH. CORRECT DEPTH AT FLAG, ADD 5 FT. ORIENT TF TO 90R DRILLING, TF = 80 R. 1.6/1.3 BPM. 3200 PSI, 10 FPH, HAD FULL RETURNS ON BOTTOM UNTIL ORIENTING. 0.3 BPM MUD LOSS AFTER ORIENTING. DRILLED TO 10800 FT. DRILLING, TF = 82R, 1.6/1.1 BPM, 3200 PSI, 20 FPH, MUD LOSS OF 0.5 BPM. DRILLED TO 10,835 FT. AHEAD ON INCL AND AZ. DIRECTIONAL IN GOOD SHAPE. ORIENT TO 45R AT WINDOW. LOSSES INCREASED WHILE ORIENTING. DRILLING BUILD SEC, TF = 30R, 1.6/1.0 BPM, 3200 PSI, 40 FPH, DRILLED TO 10862 FT. DRILLING, TF = 38R, 1.6/.6 BPM, 3200 PSI, 25 FPH. MUD LOSSES INCREASED AT SAME DEPTH AS LAST HOLE [10860 FT ON LAST HOLE]. DRILLED TO 10880 FT. DRILLING, TF = 38R, 1.6/.9 BPM,3200 PSI, 50 FPH. DRILLED TO 10905 FT. ORIENT TO HIGH SIDE. TURN COMPLETED. NEED BUILD TO LAND. DRILLING, TF = 5R, 1.5/0.8 BPM, 2900 PSI, 40 FPH, 54 DEG INCL. DRILLED TO 10,940 FT. DRILLING, TF = 7R, 1.6/0.7 BPM, 2900 PSI, 50 FPH, 69 DEG INCL. MEANWHILE START SWAPPING HOLE TO 2% KCL WATER WITH FRICTION REDUCER. DRILLED TO 10,986 FT. MOTOR STALLING. P/U AND RBIH. HOLE COMPLETELY SWAPPED TO KCL WATER. DRILLING, TF = 8R, 1.6/1.2 BPM, 2350PSI, 40 FPH, 72 DEG INCL. DRILLED TO SECTION TD AT 11,000 FT. POOH BHA #19 TO 10,541 FT. LOG GR TIE-IN. ADD 10 FT TO CTD. PUH TO 10,500 FT AND FLAG CT EOP. POOH BHA #19 TO SURFACE. UD BHA. CHECK BIT - 50% WORN. OBSERVE WELL STATIC LOSSES @ 0.15BPM. CIO MHA & DOWNSIZE MWD FLOW RESTRICTOR. RESET AKO TO 1.1 DEG BEND. GBR WELDER INSTALL TUGGER LINE GUIDES ON INJECTOR. MEANWHILE OBSERVE WELL STATIC LOSSES @ 0.2BPM. CONTINUE INSTALLING TUGGER LINE GUIDES ON INJECTOR. P/U & RIH BHA #20 TO 2,500 FT. SHALLOW HOLE TEST Printed: 10/15/200112:45:12 PM - - BP EXPLORATION Page 13 of 19 Operations Summary Report Legal Well Name: 15-41 Common Well Name: 15-41 8 Spud Date: 7/22/1994 Event Name: REENTER+COMPLETE Start: 9/21/2001 End: 10/9/2001 Contractor Name: NORDIC CALISTA Rig Release: 10/9/2001 Rig Name: NORDIC 1 Rig Number: Date From - To Hours Activity Code NPT Phase Description of Operations 10/3/2001 02:00 - 04:45 2.75 DRILL N DPRB PROD1 OK. CONTINUE RIH TO EOP FLAG. ADD 10 FT TO CTD. CONTINUE RIH TO BOTTOM TAGGED @ 11,007 FT. 04:45 - 05:00 0.25 DRILL N DPRB PROD1 P/U, ORIENT 12 CLICKS TO 31 DEG TOOL FACE. 05:00 - 05:45 0.75 DRILL N DPRB PROD1 DRILLING, TF = 29R, 1.6/1.5 BPM, 2900 PSI, 60 FPH, 83.5 DEG INCL. DRILLED TO 11,056 FT. 05:45 - 05:50 0.08 DRILL N DPRB PROD1 P/U & ORIENT. 05:50 - 06:15 0.42 DRILL N DPRB PROD1 DRILLING, TF = 40R, 1.6/1.3 BPM, 2900 PSI, 70 FPH, 84 DEG INCL. DRILLED TO 11,062 FT. MOTOR STALLING. 06:15 - 07:25 1.17 DRILL N DPRB PROD1 DRILLING, TF = 90R, 1.6/1.4 BPM, 2800 PSI, 44FPH, 85 DEG INCL. DRILLED TO 11144' 07:25 - 08:00 0.58 DRILL N DPRB PROD1 Wiper to window, hole is clean 08:00 - 09:05 1.08 DRILL N DPRB PROD1 Drilling 80-150'/hr 1.7/1.4 2600 95R. Pumping 20 bbl Flo Pro sweep every 80 bbls and fluid system is about 50/50 mud/KCI. Drill to 11210' 09:05 - 09:25 0.33 DRILL N DPRB PROD1 Wiper to window prior to POOH. Getting 16 deg/100 DLS with a 1.1 deg motor last 200' (will require too many zig/zags to get to TD) 09:25 - 10:45 1.33 DRILL N DPRB PROD1 POOH for motor 10:45 - 11 :20 0.58 DRILL N DPRB PROD1 Change motor for a 0.8 deg 11 :20 - 13:30 2.17 DRILL N DPRB PROD1 RIH wI BHA #21 13:30 - 14:00 0.50 DRILL N DPRB PROD1 Precautionary ream to TD, clean 14:00 - 14:10 0.17 DRILL N DPRB PROD1 Tag at 11200' CTD, corr to 11210'. Drilling 100'/hr 1.7/1.4 2600 120R to 11220' 14:10 - 14:30 0.33 DRILL N DPRB PROD1 Orient around from 120R 14:30 - 15:00 0.50 DRILL N DPRB PROD1 Drilling 100'/hr 1.6/1.5 2600 1 OOR to 11260' 15:00 - 15:15 0.25 DRILL N DPRB PROD1 Orient to left 15:15 - 17:00 1.75 DRILL P PROD1 Drilling 70-90'/hr 1.5/1.4 2500 122L 17:00 - 17:35 0.58 DRILL P PROD1 Drilling 60-80'/hr 1.6/1.4 2550 80L to 11385' 17:35 - 18:05 0.50 DRILL P PROD1 Wiper to window 18:05 - 18:30 0.42 DRILL P PROD1 Begin tie-in at 10540'. ADD 10FT TO CTD. 18:30 - 19:00 0.50 DRILL P PROD1 RBIH TO BTM 19:00 - 19:20 0.33 DRILL P PROD1 ORIENT TF TO 1 OOL 19:20 - 21:30 2.17 DRILL P PROD1 DRILLED TO 11,418 FTWITH 90-100L TF, 1.6/1.3 BPM & 3100 PSI ON BTM. ROP NOSE-DIVED FROM @ 120FPH TO 35 FPH. DRILLING GETTING VERY RATTY WITH FREQUENT STALLS FROM 200LBS woe. SAMPLES INDICATE @1% PYRITE WITH MORE CONSOLIDATED SAND FORMATION. 21 :30 - 22:30 1.00 DRILL P PROD1 DRILLED TO 11,439 FT WITH 90-100L TF, 1.6/1.1 BPM, 3100 PSI & 30 FPH ROP. PUMPING 20 BBL FLOPRO SWEEP EVERY 80 BBLS. FLUID SYSTEM @ 80120 MUD/KCL. DRILLING GETTING BETTER. 22:30 - 22:35 0.08 DRILL P PROD1 P/U & ORIENT 1 CLICK. 22:35 - 22:55 0.33 DRILL P PROD1 DRILLED TO 11,449 FT WITH 90-1 OOL TF, 1.6 11.1 BPM, 3100 PSI & 30 FPH ROP. 22:55 - 00:00 1.08 DRILL P PROD1 ORIENT & DRILL TO 11,468 FTWITH 90-100L TF, 1.6/1.1 BPM, 3100 PSI & 32 FPH ROP. INCL = 86 DEGS. 10/4/2001 00:00 - 00:30 0.50 DRILL P PROD1 DRILL AHEAD TO 11,487 FT WITH 60-70L TF, 1.7/1.1 BPM, 3000 PSI & 34 FPH ROP. GETTING 180 DEGS REACTIVE. 00:30 - 01 :45 1.25 DRILL P PROD1 WIPER TRIP TO WINDOW. 01 :45 - 02:15 0.50 DRILL P PROD1 DRILL TO 11,500 FTWITH 60-70L TF, 1.7/1.0 BPM, 3000 PSI & 30 FPH ROP. GETTING 200 DEGS REACTIVE WITH GRADUAL INCREASE IN LOSS RATE. FLUID SYSTEM @ ( ( Printed: 10/15/2001 12:45:12 PM BP EXPLORATION Page 14 of 19 Operations Summary Report Legal Well Name: 15-41 Common Well Name: 15-41 B Spud Date: 7/22/1994 Event Name: REENTER+COMPLETE Start: 9/21/2001 End: 10/9/2001 Contractor Name: NORDIC CALISTA Rig Release: 10/9/2001 Rig Name: NORDIC 1 Rig Number: Date From - To Hours Activity Code NPT Phase Description of Operations 10/4/2001 01:45 - 02:15 0.50 DRILL P PROD1 80/20 MUD/KCL 02:15 - 02:40 0.42 DRILL P PROD1 ORIENT TF TO 60R. 02:40 - 03:30 0.83 DRILL P PROD1 DRILL TO 11,525 FT WITH 50-60R TF, 1.6/0.6 BPM, 3000 PSI & 30 FPH ROP. 1BPM LOSS RATE. LOW MUD/KCL MIXTURE VOLUME. PUMPING BACK-UP FRESH FLOPRO DOWNHOLE. MEANWHILE ORDERED FOR KCL FOR POSSIBLE HOLE SWAP. 03:30 - 03:55 0.42 DRILL P PROD1 DRILL TO 11,541 FT WITH 26R TF, 1.6/0.6 BPM, 2900 PSI. ROP UP TO 70FPH. LIKELY DROPPED INTO LESS CONSOLIDATED ZONE. 03:55 - 04:10 0.25 DRILL P PROD1 ORIENT 1 CLICK & DRILL TO 11,548 FT WITH 60R TF, 1.61 0.6 BPM, 2900 PSI & 59 FPH ROP. INCL = 91 DEGS. 04:10 - 05:00 0.83 DRILL P PROD1 ORIENT & DRILL TO 11,600 FT WITH 90R TF, 1.6/0.8 BPM, 2800 PSI & 80 FPH ROP. INCL = 94 DEGS. STILL HAS NOT SAMPLED ANY ZONE 1. GEOLOGIST DECIDE TO LOWER TRAJECTORY FURTHER BY @ 30 FTVD TO ENCOUNTER ZONE 1. 05:00 - 05:35 0.58 DRILL P PROD1 ORIENT LS & DRILL TO 11,625 FT WITH 150R TF, 1.6 / 0.8 BPM, 2800 PSI & 74 FPH ROP. 05:35 - 06:15 0.67 DRILL P PROD1 WIPER TRIP TO WINDOW. 06:15 - 06:30 0.25 DRILL P PROD1 TIE INTO GR @ 10540'. ADD 13 FT TO CTD. 06:30 - 07:00 0.50 DRILL P PROD1 RBIH TO BTM 07:00 - 08:15 1.25 DRILL P PROD1 DRILL TO 11,650 FT WITH 172R TF, 1.6/0.6 BPM, 2750 PSI & 30 FPH ROP. DECIDE TO SWAP HOLE TO 2% SLICK KCL WATER. START KCL DOWNHOLE. 08:15 - 10:20 2.08 DRILL P PROD1 DRILL TO 11,770 FT WITH 180LS TF, 1.6/0.6 BPM, 2750 PSI & 30 FPH ROP. 10:20 - 11 :40 1.33 DRILL P PROD1 11,77'0 FT WIPER TRIP TO WINDOW. CHASING 20 BBL FLO-PRO SWEEP. ADDED KLA-GUARD TO KCL & FLO-PRO = 10 LBS/BBL 11 :40 - 12:45 1.08 DRILL P PROD1 DRILLING AHEAD 120LS TF WITH KCL @ 70 FPH ROP. 0.5 BPM LOSSES. 12:45 -14:00 1.25 DRILL P PROD1 ENCOUNTERED HIGH GAMMA SHALE LAYER @ 11,810 FT. 14:00 -15:00 1.00 DRILL P PROD1 11,920' PUMP 20 BBL SWEEP OF MUD, DRILLING @ 80 FTI HR 15:00 -16:15 1.25 DRILL P PROD1 11,950 FT, SHORT TRIP TO WINDOW CHASING FLO-PRO SWEEP 16:15 - 17:15 1.00 DRILL P PROD1 DRILLING @ 60 L TF HIT SHALE AT 11,940' (8,716 FT TVD) 17:15 - 18:00 0.75 DRILL P PROD1 Trying to get thru shale. Now at 11960' 1.6/1.3 2000-2250 psi depending if mud or KC!. 18:00 -19:30 1.50 DRILL P PROD1 DRILL SHALE TO 11,992 FT WITH 40-120L TF, 1.7/1.4 BPM, 2300/2600 PSI & 20 FPH ROP. STACKING AND STALLING WITH ERATIC TF. 19:30 - 21 :15 1.75 DRILL P PROD1 DRILL SHALE TO 12,000 FTWITH 30-60L TF, 1.7/1.4 BPM, 2100/2300 PSI & 10 FPH ROP. STACKING AND STALLING WITH ERA TIC TF. 21:15-21:45 0.50 DRILL P PROD1 BACK REAM SHALE SECTION TO 11,930 FT WITH HS-10L TF AND ADD 1 DRUM LUBETEX TO ACTIVE SYSTEM TO SEE IF ANY IMPROVEMENT. 21 :45 - 22:00 0.25 DRILL P PROD1 DRILL TO 12,026 FTWITH HS-10L TF, 1.6/1.3 BPM, 2100/2450 PSI & 30 FPH ROP. SLOW STACKING AND STALLING. COMING OUT OF SHALE @ 12,014 FT. (' (" Printed: 10/15/2001 12:45:12 PM BP EXPLORATION Page 15 of 19 Operations Summary Report Legal Well Name: 15-41 Common Well Name: 15-41 B Spud Date: 7/22/1994 Event Name: REENTER+COMPLETE Start: 9/21/2001 End: 10/9/2001 Contractor Name: NORDIC CALISTA Rig Release: 10/9/2001 Rig Name: NORDIC 1 Rig Number: Date From - To Hours Activity Code NPT Phase Description of Operations 10/4/2001 22:00 - 22:30 0.50 DRILL P PROD1 ORIENT TF TO 80-90L. 22:30 - 23:20 0.83 DRILL P PROD1 DRILL TO 12,068 FTWITH 80-90L TF,1.6/1.3 BPM, 2100/2300 PSI & 30 FPH ROP. ERRATIC TF. LOST REACTIVE. ROP PICKING UP FROM 12,050 FT. 23:20 - 23:50 0.50 DRILL P PROD1 ORIENT TF TO 80-90L. 23:50 - 00:00 0.17 DRILL P PROD1 DRILL TO 12,089 FTWITH 80-90L TF,1.6/1.3 BPM, 2000/2300 PSI & 74 FPH ROP. 10/5/2001 00:00 - 00:30 0.50 DRILL P PROD1 DRILL TO 12,108 FTWITH 80-90L TF,1.6/1.3 BPM, 2000/2300 PSI & 60 FPH ROP. INCL = 83 DEGS. 00:30 - 01 :20 0.83 DRILL P PROD1 WIPER TRIP TO WINDOW. HOLE IN GOOD CONDITION. 01 :20 - 02:00 0.67 DRILL P PROD1 TIE INTO GR MARKER @ 10540'. ADD 28 FT TO CTD. 02:00 - 02:45 0.75 DRILL P PROD1 RBIH TO BTM 02:45 - 03:30 0.75 DRILL P PROD1 CHECK TF & DRILL TO 12,184 FT WITH HS-20L TF, 1.6/1.2 BPM, 2150/2500 PSI & 95 FPH ROP. INCL = 89 DEGS. 03:30 - 03:50 0.33 DRILL P PROD1 PIU & ORIENT TF TO 80-90L. PULL HEAVY - 20K OP. 03:50 - 04:15 0.42 DRILL P PROD1 DRILL TO 12,237 FT WITH 75-80L TF, 1.6 /1.2 BPM, 2150/2550 PSI & 110 FPH ROP. RE-LAND LATERAL TO 90 DEGS INCL @ 12,216 FT. 04:15 - 04:30 0.25 DRILL P PROD1 TF WALKING RIGHT. REORIENT TF TO 90L. 04:30 - 04:45 0.25 DRILL P PROD1 DRILL TO 12,260 FTWITH 90L TF, 1.6/1.2 BPM, 2150/2500 PSI & 130 FPH ROP. 04:45 - 05:25 0.67 DRILL P PROD1 WIPER TRIP TO WINDOW. HOLE IN GOOD CONDITION. 05:25 - 06:30 1.08 DRILL P PROD1 CHECKTF & DRILL TO 12290 FTWITH 90L TF, 1.6/1.3 BPM, 2100/2300 PSI & 100 FPH ROP. 06:30 - 07:10 0.67 DRILL P PROD1 Begin stacking, pulling tite (differential) 12290'. Drill to 12304' wI difficulty. Phaze 2 declared for slick roads due to unseasonal temps (32 deg) and rain 07:10 - 08:20 1.17 DRILL P PROD1 Wiper to window 08:20 - 10:00 1.67 DRILL P PROD1 POOH for weekly BOP test 10:00 -10:45 0.75 DRILL P PROD1 LD drilling BHA. Bit like new. MWD pulser was fluid cut which explains erratic data over last several hours 10:45 - 14:00 3.25 DRILL P PROD1 Weekly BOPE test. Witness waived by AOGCC 14:00 - 15:15 1.25 DRILL N RREP PROD1 Repair hyd fluid leak in line from accumulator 15:15 -18:30 3.25 DRILL P PROD1 Fin test BOPE 18:30 -19:30 1.00 DRILL P PROD1 RIU & fill hole with 17 bbls fluid. 19:30 - 20:05 0.58 DRILL P PROD1 M/U BHA #22. 20:05 - 20:45 0.67 DRILL P PROD1 RIH BHA #22 TO 2,500 FT. SHALLOW HOLE TEST OK. FILL HOLE WITH 45 BBLS FLUID. 20:45 - 22:35 1.83 DRILL P PROD1 CONTINUE RIH TO 10,540 FT. 22:35 - 22:45 0.17 DRILL P PROD1 TIE INTO GR @ 10,540'. ADD 16 FT TO CTD. UP WT. = 25K, DOWN WT = 12K. 22:45 - 23:35 0.83 DRILL P PROD1 CONTINUE RIH & STACKED OUT @ 11,989 FT [SHALE SECTION]. WORKED THRU WITH PUMPS OFF. 23:35 - 00:00 0.42 DRILL P PROD1 BACKREAM THRU AND TRY TO WORK TIGHT SPOTS. 10/6/2001 00:00 - 00:30 0.50 DRILL N RREP PROD1 REPAIR FAULTY SCR CIRCUIT BREAKER 00:30 - 01 :10 0.67 DRILL P PROD1 BACKREAM THRU AND WORK TIGHT SPOTS OVER SHALE SECTION FROM 11,977 FTTO 12,040 FT. 01:10-01:20 0.17 DRILL P PROD1 CONTINUE RIH BHA #22 TO BTM TAGGED @ 12,304 FT. 01:20 - 01:25 0.08 DRILL P PROD1 ORIENT TF TO HS. 01:25 - 01:50 0.42 DRILL P PROD1 DRILL TO 12,344 FT WITH HS TF, 1.7/0.9 BPM, 2000/2600 PSI & 96 FPH ROP. ROP. INCL = 89.8 DEGS. 01:50 - 02:10 0.33 DRILL P PROD1 ORIENT TF TO 90L. 02:10 - 02:40 0.50 DRILL P PROD1 DRILL TO 12,401 FTWITH 90L TF, 1.7/0.9 BPM, 200012600 (' (' Printed: 10/15/2001 12:45:12 PM BP EXPLORATION Page 16 of 19 Operations Summary Report Legal Well Name: 1 5-41 Common Well Name: 15-41 B Spud Date: 7/22/1994 Event Name: REENTER+COMPLETE Start: 9/21/2001 End: 10/9/2001 Contractor Name: NORDIC CALISTA Rig Release: 10/9/2001 Rig Name: NORDIC 1 Rig Number: Date From - To Hours Activity Code NPT Phase Description of Operations 10/6/2001 02:10 - 02:40 0.50 DRILL P PROD1 PSI & 150 FPH Rap. INCL = 91.5 DEGS. OCCASIONAL WT STACKING. 02:40 - 02:45 0.08 DRILL P PROD1 ORIENT TF TO 30L. 02:45 - 02:55 0.17 DRILL P PROD1 DRILL TO 12,430 FTWITH 30L TF, 1.7/0.9 BPM, 2000/2900 PSI & 150 FPH Rap. FREQUENT WT STACKING. 02:55 - 03:00 0.08 DRILL P PROD1 ORIENT & GOT DIFFERENTIALLY STUCK. 03:00 - 03:30 0.50 DRILL N STUC PROD1 SHUT DOWN PUMPS. STACK DOWN 6KAND RELAX STRING FOR 30 MINUTES. PULL PIPE FREE WITH 57K. 03:30 - 05:00 1.50 DRILL P PROD1 WIPER TRIP TO WINDOW. 05:00 - 05:30 0.50 DRILL P PROD1 TIE INTO GR MARKER @ 10540'. ADD 26 FT TO CTD. 05:30 - 06:20 0.83 DRILL P PROD1 RBIH TO BTM. NO BOBBLES OVER SHALE SECTION. 06:20 - 06:30 0.17 DRILL P PROD1 ORIENT TF TO 90-100L. 06:30 - 07:05 0.58 DRILL P PROD1 Drill from 12430-530' 1.7/0.92550 at 70L by spudding. Frequent differential overpulls. Now at 92.3 deg 07:05 - 07:55 0.83 DRILL P PROD1 Wiper to window 07:55 - 08:30 0.58 DRILL P PROD1 Tie-in, add 12.0' 08:30 - 09:30 1.00 DRILL P PROD1 RIH to TD. Work to get thru shales at 12000' starting from set down at 11984' (10 min) 09:30 - 09:45 0.25 DRILL P PROD1 Tag at 12530'. Orient around 09:45 - 12:00 2.25 DRILL P PROD1 Drill (like a cable tool rig) from 12530-618' 1.7/0.92550 115L while work thru a shale at 12565'. Acting like lockup after getting to 12618' 12:00 -12:15 0.25 DRILL P PROD1 Survey, then wiper to window 12:15 -12:40 0.42 DRILL P PROD1 Log gap in GR from 12130-12090' 12:40 - 13:25 0.75 DRILL P PROD1 Resume wiper 13:25 - 14:25 1.00 DRILL P PROD1 Begin tie-in from 10540' 14:25 - 15:25 1.00 DRILL P PROD1 Add 18.0', RIH. Set down at 11980'. Work to get thru shales and got thru wo pump 15:25 - 15:40 0.25 DRILL P PROD1 Tag at 12623'. Orient from 90R to 90L 15:40 - 16:40 1.00 DRILL P PROD1 Spud a few times and took off drilling (GR showed a minor shale at 12620'). Drill from 12623-736' 1.7/0.92800 (new mud) 90L and lost momentum at 12736' 16:40 - 17:55 1.25 DRILL P PROD1 Wiper to window from 12736'. Wipe liner to near EaT at 10300'. RIH 17:55 - 18:20 0.42 DRILL P PROD1 Begin tie-in from 10530' 1.7/0.92350 40L. Add 15' to CTD. 18:20 - 19:30 1.17 DRILL P PROD1 RBIH TO BTM TAGGED@ 12,735 FT. NO BOBBLES OVER SHALE SECTION. 19:30 - 19:55 0.42 DRILL P PROD1 WEAK MWD PULSES. CYCLE PUMPS & CHECK TF @ 28R. ORIENT TF TO 15L. 19:55 - 22:00 2.08 DRILL P PROD1 SPUD A COUPLE TIMES & FINALLY PUSHED TO 12,770 FT. NO FURTHER PROGRESS. CALL TD. 22:00 - 23:15 1.25 DRILL P PROD1 WIPER TRIP TO WINDOW. 23:15 - 23:40 0.42 DRILL P PROD1 TIE INTO GR MARKER @ 10540'. ADD 17 FT TO CTD. 23:40 - 00:00 0.33 DRILL P PROD1 RBIH. 10/7/2001 00:00 - 00:40 0.67 DRILL P PROD1 CONTINUE RBIH TO TD TAGGED @ 12,777 FT. NO BOBBLES OVER SHALE SECTION. 00:40 - 01 :10 0.50 DRILL P PROD1 CIRCULATE HOLE CLEAN. 01 :10 - 03:30 2.33 DRILL P PROD1 POOH LAYING-IN CLEAN FLO-PRO MUD IN OPEN HOLE. PAINTED EOP FLAGS @ 10,200 FT & 8,150 FT. 03:30 - 04:10 0.67 DRILL P PROD1 UD DRILLING BHA#22. 04:10 - 04:30 0.33 CASE P COMP RU FLOOR TO RUN 2-3/8" LINER. 04:30 - 04:45 0.25 CASE P CaMP HELD SAFETY MEETING ON RUNNING OF LINER. MEANWHILE FILL HOLE WITH 6 BBLS AND CONFIRM ( (' - Printed: 10/15/2001 12:45:12 PM BP EXPLORATION Page 17 of 19 Operations Summary Report Legal Well Name: 15-41 Common Well Name: 15-41 B Spud Date: 7/22/1994 Event Name: REENTER+COMPLETE Start: 9/21/2001 End: 10/9/2001 Contractor Name: NORDIC CALISTA Rig Release: 10/9/2001 Rig Name: NORDIC 1 Rig Number: Date From - To Hours Activity Code NPT Phase Description of Operations 1 0/7/2001 04:30 - 04:45 0.25 CASE P COMP STATIC LOSSES @ 6 BBLS/HR. 04:45 - 06:15 1.50 CASE P COMP MIU & RIH 1 JT OF 2-3/8", FL4S LINER X/OVER TO 75 JTS OF 2-3/8" STL LINER AND JEWELRY AS PER PROGRAM. 06:15 - 06:30 0.25 CASE P COMP CREW CHANGE SAFETY MEETING. MEANWHILE FILL LINER. 06:30 - 09:00 2.50 CASE P COMP CONTINUE RIH 2-3/8" STL LINER AND JEWELRY AS PER PROGRAM. 09:00 - 09:15 0.25 CASE P COMP Safety mtg re: CSH 09:15-12:15 3.00 CASE P COMP MU Baker stinger. MU 79 jts 1" CSH workstring. Stung into Backdoor flapper 1 jt early 12:15 -12:30 0.25 CASE P COMP Determine that one jt of 2-3/8" liner was mistakenly left out of planned tally (marker jt was counted as a full jt). Safety mtg re: non routine event 12:30 - 13:30 1.00 CASE N HMAN COMP Strip over CSH wI two 10' 2-3/8" 4.7# L-80 STL pup jts and space out CSH 13:30 - 14:25 0.92 CASE P COMP Pressure test seals in O-ring sub to 500 psi. Install CTLRT with stinger 15' into O-ring seal assy (a total of 80 jts and one CSH pup) 14:25 - 15:45 1.33 CASE P COMP RIH wI CT and liner BHA (2517' OA) 15:45 - 16:20 0.58 CASE P COMP 10667' Corr -16.8' at flag. PUH 38.1 K. RIH 15K thru window and head to TD at 65'/min losing 0.4 bpm to surge 16:20 - 17:05 0.75 CASE P COMP Tag TD at 12777' CTD with + 7k string wt (hole was clean to TD). Recip 30' at 35.8k. Load 5/8" steel ball. Displace wI mudlKCI mix 1.3/0.6 3800 to seat. Pressure up to 4400 psi to blowout ball seat. Release from liner at 28k RU DS cementers 17:05 - 18:05 1.00 CASE P COMP Begin displacement to KCI. Batch up cement. 1.6/1.3 3700 with KCI in annulus 18:05 -18:20 0.25 CASE P COMP Safety mtg re: cmt 18:20 -19:30 1.17 CASE P COMP DS PT @ 4000 psi. Load CT wI 20 bbls 15.8 ppg G cement wI latex @ 1.2/1.0 2600. Displace wI KCI water, under-displacing by 2bbls. Had 13.5 bbls cement behind shoe. CIP @ 19:30 Hrs. 19:30 - 20:10 0.67 CASE P COMP UNSTING FROM POB. FLOATS HELD OK. LAY-IN REMAINING 2 BBLS OF CEMENT WHILE PUH TO 11750 FT. PUMP 30 BBLS BIOZAN AND DISPLACE TO NOZZLE @ 1.8/1.8 BPM & 4000 PSI. 20:10 - 20:35 0.42 CASE P COMP RBIH DILUTINGICIRCULATION OUT CEMENT WITH BIOZAN @ 1.7/1.9 BPM & 4250 PSI. GOT BACK @ 3-5 BBLS EXCESS CMT FROM BEHIND LINER FOLLOWED BY 2 BBLS CONTAMINATED [UNDERDISPLACED] CMT. 20:35 - 22:10 1.58 CASE P COMP CIRCULATE OOH. DISCOVERED PINHOLE IN CT@ 2150 FT. INSPECT PINHOLE - IMPRINT LOOKS LIKE ROLLER BEARING GOUGE. 22:10 - 22:40 0.50 CASE N SFAL COMP INSPECT INJECTOR ROLLER BEARINGS FOR ANY ANOMALY - NOTHING AMISS?? [4 BEARINGS WERE CHANGED OUT LAST MONTH]. 22:40 - 23:00 0.33 CASE P COMP CONTINUE POOH CTLRT. STANDBACK INJECTOR. 23:00 - 00:00 1.00 CASE N SFAL COMP PURGE COIL. RIU TO CUT 2,150 FT CT. HELD PJSM. 10/8/2001 00:00 - 01 :45 1.75 CASE N SFAL COMP CUT OFF 2,150 FT CT. RE-HEAD CTC. PULL / PRESS TEST CTC - OK. 01 :45 - 03:45 2.00 CASE P COMP UD CTLRT & STAND BACK CSH. 03:45 - 04:00 0.25 EVAL P COMP PJSM ON PIU 1" CHS TBG AND MCNUGR/CCL TOOLS. (' f Printed: 10/15/2001 12:45:12 PM BP EXPLORATION Page 18 of 19 Operations Summary Report Legal Well Name: 15-41 Common Well Name: 15-41 B Spud Date: 7/22/1994 Event Name: REENTER+COMPLETE Start: 9/21/2001 End: 10/9/2001 Contractor Name: NORDIC CALISTA Rig Release: 10/9/2001 Rig Name: NORDIC 1 Rig Number: Date From - To Hours Activity Code NPT Phase Description of Operations 10/8/2001 04:00 - 05:00 1.00 EVAL P COMP MU SWS MCNUGRlCCL TOOLS. RIH ON 18 JTS 1" CSH WORKSTRING. OBSERVE BOT 1" 'LYT' ELEVATOR SPRING APART WITH MISALIGNED DIES SECTIONS. STOP RIH. CONTACT BOT. 05:00 - 06:50 1.83 EVAL N SFAL COMP BOT P/U ELEVATOR TO SHOP AND FIX SAME. 06:50 - 08:10 1.33 EVAL P COMP Resume MU CSH workstring 08:10 - 09:30 1.33 EVAL P COMP RIH w/ CT 09:30 - 11 :00 1.50 EVAL P COMP Begin logging down at 30'/min from 10150' 11:00 -12:30 1.50 EVAL P COMP Tag at 12721' CTD. Begin logging up at 30'/min while leaving fresh Flo Pro in liner 12:30 -13:30 1.00 EVAL P COMP POOH wI CT 13:30 -14:50 1.33 EVAL P COMP Standback CSH workstring 14:50 - 15:00 0.17 EVAL P COMP Safety mtg re: source 15:00 -15:20 0.33 EVAL P COMP LD logging tool 15:20 -15:45 0.42 EVAL P COMP Download data. PBD is 12742' (2' deeper than pipe tally) 15:45 -16:45 1.00 PERF P COMP Pressure test wellbore to 2000 psi. After 1 min 1900 psi, 5 min 1750, 15 min 1500, 30 min 1250,45 min 1150. No change in IA. Load perf guns in pipeshed. Fax log to town 16:45 -18:45 2.00 PERF P COMP Make minor change to proposed perfs to test SWS eFire system. WO SWS to get a 10' spacer to shoot desired interval 18:45 -19:00 0.25 PERF P COMP SAFETY MTG RE: PERF GUNS 19:00 - 20:30 1.50 PERF P COMP M/U 33 JTS OF 1-11/16" SWS PERF GUNS 20:30 - 21 :45 1.25 PERF P COMP M/U 30 STANDS 1" CSH WORKSTRING 21 :45 - 00:00 2.25 PERF P COMP RIH WI CT. 10/9/2001 00:00 - 00:15 0.25 PERF P COMP TAG AT 12,725 FT CTD. PIU & RE-TAG @ SAME DEPTH. CALL IT PBTD & CORRECT TO 12,742 FT. PUH TO SET DEPTH OF 12,720.7 FT WITH BTM SHOT @ 12,720 FT. 00:15 - 00:40 0.42 PERF P COMP LINE UP AND FILL HOLE. SHUT-IN CHOKE. SET-UP SEISMIC DETECTOR TO LUBRICATOR FOR SHOT DETECTION. DRILLER PRACTICE PUMPING PROCEDURE FOR FIRING E-FIRE HEAD. 00:40 - 00:55 0.25 PERF P COMP PRESURE-UP WELLHEAD TO 400 PSI & HOLD FOR 1 MIN. INCREASE PRESSURE TO 600 PSI & HOLD FOR 1 MIN. DUMP PRESSURE TO 0 PSI & WAIT FOR 2 MINS. CRANK-UP TO 1200 PSI & WAIT FOR 2 MINS. BLEED OFF TO 0 PSI AND WAIT FOR 5 MINS. OBSERVE E-FIRE HEAD SHOOT WITH INDICATION VIA SEISMIC DETECTOR. PERF INTERVAL: 12714 FT - 12720 FT. 00:55 - 01 :45 0.83 PERF P COMP LOAD CT WITH 10 BBLS FLO-PRO. LOAD 1/2" STEEL BALL. DISPLACE WITH 2% KCL. LOWER RATE AFTER 28 BBLSAWAY. 01:45 - 01:50 0.08 PERF P COMP BALL ON SEAT AT 32 BBLS & FIRED AT 2450 PSI WITH PRESSURE DROP & SEISMIC DETECTOR INDICATIONS. PERF INTERVALS: 12040 FT -12363 FT & 12401 FT - 12704 FT. 01 :50 - 04:00 2.17 PERF P COMP POOH FILLING FROM BS. MONITOR WELL FOR 10 MINS @ 8,200 FT - STABLE. CONTINUE POOH. MONITOR WELL - STABLE. 04:00 - 05:15 1.25 PERF P COMP STAND BACK 30 STANDS OF 1" CS HYDRIL. 05:15 - 05:45 0.50 PERF P COMP PJSM & RlU TO UD PERF GUNS. MEANWHILE MONITOR LOSSES - HOLE STABLE. 05:45 - 06:15 0.50 PERF P COMP UD PERF GUNS. (' (" Printed: 10/15/2001 12:45:12 PM (" (" BP EXPLORATION Page 19 of 19 Operations Summary Report Legal Well Name: 15-41 Common Well Name: 15-41 B Spud Date: 7/22/1994 Event Name: REENTER+COMPLETE Start: 9/21/2001 End: 10/9/2001 Contractor Name: NORDIC CALISTA Rig Release: 10/9/2001 Rig Name: NORDIC 1 Rig Number: Date From - To Hours Activity Code NPT Phase Description of Operations 10/9/2001 06:15 - 06:30 0.25 PERF P CaMP CREW CHANGE SAFETY MEETING. RE: UD PERF GUNS 06:30 - 08:15 1.75 PERF P CaMP CONTINUE UD 33 JTS OF 1-11/16" SWS PERF GUNS. ASF. Load out guns 08:15 - 08:25 0.17 RIGD P CaMP Safety mtg re: CSH 08:25 - 09:05 0.67 RIGD P COMP RIH wI CSH workstring in doubles 09:05 - 10:05 1.00 RIGD N SFAL CaMP Repair YT elevators (hard to close. BOT drop off another set) 10:05 - 11 :00 0.92 RIGD P COMP Resume RIH wI CSH 11 :00 - 12:00 1.00 RIGD P CaMP POOH LDDP 12:00 -12:15 0.25 RIGD P CaMP Safety mtg re: crew change/CSH 12:15 -13:45 1.50 RIGD P CaMP Resume POOH LDDP 13:45 - 16:00 2.25 RIGD P CaMP RU nozzle assy. Install new depth encoder. RIH pumping MeOH. FP well to 2000' wI MeOH. POOH 16:00 -17:00 1.00 RIGD P CaMP SI swab, secure well. Blow back reel with air. Load out misc equipment 17:00 - 19:00 2.00 RIGD P CaMP ND BOPE. NU tree cap and test 19:00 - 0.00 RIGD P CaMP Rig released at 1900 hrs 10/9/01. TT 18:3:30 Printed: 10/15/2001 12:45:12 PM ( BP Amoco Baker Hughes INTEQ Survey Report (' 8.. .... h~T EQ - ObP ,..,-..--.-- --- -- ----- -.---------------.---.-----.-------.--------------------"-----'---',_---,------ ------- ----'-'----"---------------' ---.-, , Company: BP Amoco I Field: Prudhoe Bay Site: PB DS 15 Well: 15-41 : Wellpatb: 15-41BPB1 .. --,'----.--"u_- .--".---.-..,--,--------.-----,---_u_--,-------,.-.-..------'------' .__-.--n______------._u_--.-- '------'----'------'-----'-'---------'-'---'u"'" _"mu_.__m,_- -- -------.--...-,---. ---'- ,- --- . -- -- ----...--- '-'-- -----,_.. .un....-__-_. -- -- '---"---------'---'--'----_u_'u_,--.--u.--------.---o. Date: 1 0/2312001 Time: 1 0:45:23 Page: 1 Co-Grdinate(NE) Reference: Well: 15-41, True North Vertical (fVD) Reference: 58: 41 7/22/199400:0066.2 Section (VS) Reference: Well (0.00N,0.00E,353.81Azi) Survey Calculation Method: Minimum Curvature ' Db: Oracle Prudhoe Bay North Slope UNITED STATES Map System:US State Plane Coordinate System 1927 I Geo Datum: NAD27 (Clarke 1866) I Sys Datum: Mean Sea level Field: Map Zone: Coordinate System: Geomagnetic Model: Alaska, Zone 4 Well Centre BGGM2001 . ._.m no. ----._------ u_--------.-------. -o.- ----------.-..----, --.----...-----.--.------------..----------.---,-- , Site: -- PB DS 15 TR-11-14 UNITED STATES: North Slope Site Position: Northing: 5958837.36 ft Latitude: 70 17 35.236 N From: Map Easting: 676296.98 ft Longitude: 148 34 21.213 W Position Uncertainty: 0.00 ft North Reference: True Ground Level: 0.00 ft Grid Convergence: 1.34 deg "_--_00__"_._---'---- '--------'-'---'--U---'--'-------'---'--U-------_-'---_..m___----'--'----__.___n.--_u_.-------.--.. ---- --.---.-- ----_. ----------- --.._--- --"'-'----,- --.--.- - - '--.u_---.--- -------_.--- -'--.- -- ---. --. ----_._-,------- ,-. '--'-_-____m. .----_u_, "'----'--------------'---'-"'--'_'.__.m_____.._---,-,-------'----'-'-'-- ---------,-...--.----- _"'00__'- n_,.--m.. Well: 15-41 15-41 Well Position: +N/-S 1176.23 ft Northing: +E/-W 379.93 ft Easting : Position Uncertainty: 0.00 ft Slot Name: 41 5960022.1 0 ft 676649.20 ft Latitude: Longitude: 70 17 46.805 N 148 34 10.139 W ..- .....-----...... .-.. .. -,---..-----..-.-..... '..n"u",- --"..--..-,----.------ .-...,. -"-""'----"'-'----_'___'00__--___-------.- u_.--m...___.._-----..----.---....... .....-..--- "--.,-..---.-..,-..' ...----- -.... -- ..,..,..-----.......,..-.... '-"-.-....------,---....-.....---- "'----'---"'-'--"'----"'----""-'-'-"""'---------,--,----,--""'-"--------'--__n"-__"_,----,---,---"--------,-""""-,,,,------------"----'-------___..._m__-- ....-...... ..- Wellpath: 15-41BPB1 500292249271 Current Datum: 58: 417/22/199400:00 Magnetic Data: 10/23/2001 Field Strength: 57504 nT Vertical Section: Depth From (TVD) ft . .-.. .-....--- .. -,,'p"" - ...--..---. 0.00 Drilled From: Tie-on Depth: Height 66.25 ft Above System Datum: Declination: Mag Dip Angle: +N/-S +E/-W ft ft ....-.-- '----"---"-""'-"'--'-'m--__..._-..---.--- "----'-',,"--__...__n.._. 0.00 0.00 15-41 10690.00 ft Mean Sea Level 26.59 deg 80.81 deg Direction deg ..-........-...,-,---..-.. 353.81 .....--.... -....- ... "'__U'.'-'--"""'_"-'--'_._.._._.._.__.._.,.._.......__.__.._~....~-------".__.._------,....._--.._--_.._---_._-----_..._---.....,.-------.....-..--...-,. . .. -..--....-...-.............,--,--. ........,--... - ,---- -,-...----.. .........---------,--....---...,.. .-....---.--.----....--------.......-,---,-,-----,....---...-.--....-.-'----'-'--""""'-"'-"----'-------'-"'----""""'-"-'------,,--,-.---....-- ... Survey: MWD Start Date: 9/26/2001 Company: Baker Hughes INTEQ Tool: MWD,MWD - Standard Engineer: Tied-to: From: Definitive Path ..--....---...-..,,------ '-'--""'-.-.. ...._u_--...---...-...- -""-"""-""""---""---"""""'------------....-..-..-..,----,-.......--- ..---.-----..------...,...-,---...... "-""""'-"'-"'---"-""-" ",,"'-" .---, -......-.. ""'... '-'" Annotation 10690.00 11278.00 ft 8524.43 8747.27 KOP TD Survey :.._,--,......_-----.._.._-"......,.....~""...._-" "---'-C-""""'.--."'----."""':'-.-""-~'C--"'-"~"'-"""'C,-"--:-:-"""-"",-",-",-~",-,--c-:-,-"""-,,,,,,,,,..,.._-,......,-..7""',~--~-,--;",-"""""--"",~---,--""",--~",--",---c,,.,,":--,"""-""""""',",-"-~'-""""---."""~""--""'------".-""'. """"-"""'-'---""..--.."""""""" """"""."'..'-"""""-'-"" """""'-""--"""""""",,--T MD,Incl.,Aiim ..TVD' ,SSirvP ,N/S,. .'. ,EfW, . ,l\1apN ,MapE, .. DLS VS ..... "_....,,....,~-,.._..,!.,_.,._----,,',---, ""-"~;~..~-,_._..,_. .,.,~.,~..~,~J__!,:"_,............!!,_..~.._~"._,c_'_,:",:_!~-~....--.:~~..,..,;,..._.~~:_'.,,-_:_...,:.....:..~~,..,~.,:,,_._,~.~---.~!!:....,.,_:,.__...",.:_~,:...:..__...~~_..,-"....".:.~~~(,~ge~_, .....,.,._1!:.,... ,......"...",,--- ,- 10690.00 11.40 0.29 8524.43 8458.18 5431.13 -1018.17 5965427.45 675503.73 0.00 5509.26 10738.35 28.56 27.70 8569.78 8503.53 5446.28 -1012.72 5965442.72 675508.82 39.53 5523.73 10777.62 36.91 49.89 8602.91 8536.66 5462.27 -999.27 5965459.03 675521.90 36.93 5538.18 10812.87 44.82 57.28 8629.56 8563.31 5475.84 -980.68 5965473.03 675540.16 26.27 5549.66 10843.10 50.54 73.10 8649.97 8583.72 5485.03 -960.46 5965482.69 675560.15 42.97 5556.62 10877.73 55.63 74.50 8670.77 8604.52 5492.74 -933.88 5965491.02 675586.54 15.05 5561.42 10910.33 56.43 83.99 8689.01 8622.76 5497.77 -907.37 5965496.67 675612.93 24.26 5563.56 10946.98 57.13 94.19 8709.13 8642.88 5498.24 -876.77 5965497.86 675643.50 23.35 5560.73 10978.93 62.40 98.41 8725.22 8658.97 5495.19 -849.36 5965495.45 675670.98 20.05 5554.74 11013.25 66.62 105.09 8740.00 8673.75 5488.85 -819.07 5965489.83 675701.41 21.44 5545.17 11048.56 73.39 107.55 8752.06 8685.81 5479.52 - 787 .25 5965481.25 675733.44 20.26 5532.46 11088.61 82.18 105.79 8760.53 8694.28 5468.31 -749.78 5965470.93 675771.15 22.36 5517.28 11130.61 92.29 106.14 8762.55 8696.30 5456.79 -709.50 5965460.36 675811.69 24.09 5501.48 11161.46 96.59 112.47 8760.16 8693.91 5446.63 -680.50 5965450.89 675840.93 24.75 5488.25 11196.21 98.17 119.85 8755.69 8689.44 5431.45 -649.59 5965436.44 675872.18 21.55 5469.83 11242.41 95.01 128.64 8750.38 8684.13 5405.65 -611.70 5965411.53 675910.66 20.10 5440.09 11278.00 95.01 128.64 8747.27 8681.02 5383.51 -584.00 5965390.05 675938.87 0.00 5415.09 """"-"""""'--.-,..-,..-.........---------.-.--....,---...,....-..-...-...-.... 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'--.--'--, Company: BP Amoco Field: Prudhoe Bay Site: PB DS 15 Well: 15-41 Wellpath: 15-41B Date: 10/23/2001 Time: 10:47:02 Page: 1 Co-ordinate(NE) Reference: Well: 15-41, True North Vertical (fVD) Reference: 58: 41 7/22/199400:0066.2 Section (VS) Reference: Well (0.00N,O.00E.150.00Azi) Survey Calculation Method: Minimum Curvature Db: Oracle Field: ---------...-.,,------_u..,.--,......-.____.H.___-- ,_.---- -- --"'_'_'.n..'..'-..-.-'--'.'-.'------ -----. ----..,-.,--.---------------.--__.UO_n..---.__--___m__,_._-------,.. -,-- ,'... "-- _..u -. --u. . . - . -' . -- ,- . . - - Prudhoe Bay North Slope UNITED STATES Map System:US State Plane Coordinate System 1927 Geo Datum: NAD27 (Clarke 1866) : Sys Datum: Mean Sea Level PB DS 15 TR-11-14 UNITED STATES: North Slope Site Position: Northing: From: Map Easting: Position Uncertainty: 0.00 ft Ground Level: 0.00 ft Site: Well: 15-41 15-41 Well Position: +N/-S 1176.23 ft +E/-W 379.93 ft Position Uncertainty: 0.00 ft . ." - .. Northing: Easting : 5958837.36 ft 676296.98 ft 5960022.10 ft 676649.20 ft .. -..,-.---.-------." Map Zone: Coordinate System: Geomagnetic Model: Alaska, Zone 4 Well Centre BGGM2001 - ---.. .-- Latitude: 70 17 35.236 N Longitude: 148 34 21.213 W North Reference: True Grid Convergence: 1.34 deg .-. - -- - . Slot Name: Latitude: Longitude: -, ._---- ... --_.-.- ..,. -, - -, -- - '---' 41 70 17 46.805 N 148 34 10.139 W ..,,----_.,.. '---...---.------."----- .--.--.,.-,---.-.,".----.,.-. -,--u_--,-_...---,--- ..." ..---' ,---.-".. --_.,-_u_,-,._-,,- .-.-.-- Wellpath: 15-41 B 500292249202 Current Datum: 58: 417/22/199400:00 Magnetic Data: 7/10/2001 Field Strength: 57500 nT Vertical Section: Depth From (TVD) ft 0.00 Survey: MWD Company: Baker Hughes INTEQ Tool: MWD,MWD - Standard Annotation Height +N/-S ft 0.00 66.25 ft Drilled From: Tie-on Depth: Above System Datum: Declination: Mag Dip Angle: +E/-W ft 0.00 15-41 10705.00 ft Mean Sea Level 26.69 deg 80.80 deg Direction deg - , ,-,..,-- -'---- 150.00 .,.,.. m ,_.,._--"- ,- ,--_.-,-"" -.-----------..---.,..---.,- ,.----,----...--.--,,--.-...,--..----.------_'___.m_.__.--._".,,--,.. ---,--_.._'. -_..,..."-----,--,---,,,._.,---,---""'---"'-'u-- -"-.-..-".,,----.----,----...".-- .-- Start Date: ..-.,._,---_..,._--,-_._.,._,,---,--'_u._,,--,-,--, ..'-.",'h" Engineer: Tied-to: ."---,.,.,,-,.,-,,,-,_.,-,---,-_.,-'-'" 1 0/6/2001 .- .,---- ,.. ..-,.. From: Definitive Path MD ft 10705.00 12777.00 8539.13 8799.91 KOP TD ._---,------_._---,--'------_.--'----_._'---"-------'--_d.._,--_---'-.--'-""--.-"'--'" ,_m_'-'--.._'---'-,-",,---,---,--,----, .".---..---.--.--..",---,--..-, .. -'" -.. ..,...-. - -"""",_... ...- ..-----"..-- ,...--,-_. Survey ..----..-..---............"" ",--,"""--d_..um.....",_.......,..--,.-_'d"'_""""'"-,,,,--,,-.--,,--,---""_"_""'dU."__",-",--,,,-,..------__"_'_m,.......-__m..m....._..".-"-.-""--""""----,-",,,,,,,----"""""""'d_-"'-""""""""""d- ",..--....", Id MD ft ......" ._..-""-""."'",,-,,, 1 0705.00 1 0760.69 10796.99 1 0827.49 10858.81 Incl ."..-~:~"... 11.59 22.41 29.79 32.08 40.52 10890.94 10931.86 10961.04 11000.44 11033.16 11068.09 11103.54 11138.46 11169.34 11200.31 48.96 60.38 68.99 79.37 84.38 88.68 88.95 89.91 91.05 91.05 11236.84 11267.36 11298.89 91.76 91.67 89.47 Azim TVD SSTVD deg 'ft. ,,"ft "" ....-..:"",._"-"..,,_.,.,,-,-_.,:._-_.._.,_...._,,,,~...~--:.,.....".:,.."c_.";"c"_."-".,,..',,. 0.32 8539.13 8472.88 65.00 8592.71 8526.46 89.97 8625.38 8559.13 114.58 8651.64 8585.39 118.80 8676.87 8610.62 N/S E/W MapN MapE DLS .._._.."..~,.....--.'_._":.,,....._._,--_c~_.:,_._,....-....:,.:...,.:!!:_L..~,._..._.,.,-_._.--_....!~..'~.,-, ...-.". ,. ."_.~~~(Jgq~... 5434.12 -1018.15 5965430.44 675503.68 0.00 5444.30 -1008.40 5965440.85 675513.19 36.31 5447.25 -993.04 5965444.15 675528.47 36.06 5443.87 -978.04 5965441.13 675543.55 41.90 5435.49 -961.53 5965433.14 675560.25 28.09 125.48 123.02 121.26 124.07 125.48 128.29 133.92 139.89 145.17 153.60 156.77 154.66 153.60 8699.68 8723.31 8735.77 8746.50 8751.13 8753.24 8753.97 8754.32 8754.06 8753.49 8752.60 8751.68 8751.37 8633.43 8657.06 8669.52 8680.25 8684.88 8686.99 8687.72 8688.07 8687.81 8687.24 8686.35 8685.43 8685.12 5423.40 5404.69 5390.68 5370.23 5351.76 5330.84 5307.55 5282.06 5257.56 5230.94 -942.47 -914.89 -892.57 -860.72 -834.12 -806.25 -779.55 -755.71 -736.93 -721.17 5197.79 5169.99 5141.62 -705.85 -693.30 -679.55 '-"'""- -,..,-.".,."-"---.,,.-..-..----..-----....--,,. _,,_'.'h""_._..--"".-' 5965421.50 5965403.45 5965389.97 5965370.27 5965352.43 5965332.18 5965309.52 5965284.60 5965260.55 5965234.31 5965201.54 5965174.04 5965146.00 --- -".,.""""""",,---- ...' 675579.59 675607.59 675630.24 675662.56 675689.58 675717.94 675745.17 675769.61 675788.95 675805.33 675821.43 675834.62 675849.04 30.04 28.33 30.00 27.22 15.89 14.70 15.90 17.31 17.49 27.22 VS ft .".."---_.,----.."...,.,...,, ' -5215.16 -5219.11 -5213.98 -5203.55 -5188.04 -5168.04 -5138.04 -5114.75 -5081.12 -5051.82 -5019.77 -4986.25 -4952.25 -4921.65 -4890.71 8.89 6.92 7.74 -4854.35 -4823.99 -4792.55 (' (' iii.. ObP BP Amoco BAKDI. IUCIIIS Baker Hughes INTEQ Survey Report INT EQ -- -----_..- -..------.------ -- n.. - --_. .-.- ---- -- -.----.- _. --- -. Company: BP Amoco Date: 10/23/2001 Time: 10:47:02 Page: 2 - Field: Prudhoe Bay Co-ordinate(NE) Reference: Well: 15-41, True North Site: PB DS 15 Vertical (fVD) Reference: 58: 41 7/22/199400:0066.2 Well: 15-41 Section (VS) Reference: Well (0.OON,O.00E.150.00Azi) Wellpatb: 15-41B Survey Calculation Method: Minimum Curvature Db: Oracle .. - ---... - -- .. -- - --. , - ._---.---- --...---------.----..---,----_u.----_..O..__n- -.---.----u_----------.--.---_u_____--_n___n_...__- --..------_._- ----_u- ---_on ---.- _n_" -- Survey ---,- ---' -..---..-----..-- ____un - --'-'- --------.-----------.--------------------.-----------.--u_------------..--,------ --------_'__m-_O-'---------'---'- .__u -- -. ---- -----_. - ~-_... MD Incl Azim TVD SSTVD N/S EIW MapN MapE DLS VS ft deg deg ft ft ft ft ft ft deg/10OO ft - -.---.------------------.. ---.-----------. .__.___n______---'--------'---'--- ----..------.-..---- _h_.____--.-- --------------,--.--------------------.-,-----. ---,---.--'-'--'--. - .---.--------'------'--" - 11335.09 88.33 153.25 8752.07 8685.82 5109.25 -663.36 5965114.02 675865.99 3.29 -4756.42 11380.68 89.30 148.33 8753.01 8686.76 5069.48 -641.12 5965074.79 675889.15 11.00 -4710.86 11414.73 88.07 148.33 8753.79 8687.54 5040.51 -623.25 5965046.25 675907.70 3.61 -4676.83 11460.54 86.84 145.52 8755.83 8689.58 5002.17 -598.28 5965008.50 675933.56 6.69 -4631.14 11503.79 87.01 139.89 8758.15 8691.90 4967.82 -572.12 5964974.79 675960.52 13.00 -4588.32 11546.96 92.02 143.06 8758.51 8692.26 4934.07 -545.24 5964941.67 675988.18 13.73 -4545.65 11580.09 94.04 147.63 8756.76 8690.51 4906.86 -526.43 5964914.92 676007.62 15.06 -4512.68 11616.11 93.34 149.39 8754.44 8688.19 4876.21 -507.66 5964884.72 676027.11 5.25 -4476.75 11648.71 91.41 152.90 8753.09 8686.84 4847.69 -491.94 5964856.58 676043.49 12.28 -4444.1 9 11682.02 88.86 151.14 8753.01 8686.76 4818.28 -476.32 5964827.54 676059.80 9.30 -4410.91 11742.29 84.46 158.88 8756.53 8690.28 4763.80 -450.92 5964773.68 676086.47 14.75 -4351.03 11789.12 83.23 156.77 8761.55 8695.30 4720.69 -433.35 5964731.00 676105.05 5.19 -4304.91 11820.42 83.85 160.64 8765.07 8698.82 4691.71 -422.05 5964702.30 676117.02 12.44 -4274.17 11856.89 83.85 159.93 8768.98 8702.73 4657.58 -409.82 5964668.46 676130.05 1.94 -4238.49 11887.97 82.27 157.82 8772.74 8706.49 4628.80 -398.70 5964639.96 676141.84 8.44 -4208.01 11929.17 81.56 153.25 8778.53 8712.28 4591.68 -381.82 5964603.25 676159.60 11.12 -4167.42 11963.91 81.83 149.74 8783.55 8717.30 4561.48 -365.41 5964573.44 676176.70 10.03 -4133.07 11996.81 82.88 147.63 8787.93 8721.68 4533.63 -348.47 5964545.99 676194.30 7.11 -4100.47 12042.88 84.90 147.11 8792.83 8726.58 4495.05 -323.77 5964508.01 676219.90 4.53 -4054.71 12077.98 83.85 144.82 8796.27 8730.02 4466.11 -304.22 5964479.54 676240.12 7.15 -4019.87 12111.34 83.67 143.06 8799.90 8733.65 4439.30 -284.70 5964453.20 676260.26 5.27 -3986.89 12143.62 85.69 140.24 8802.89 8736.64 4414.10 -264.76 5964428.47 676280.79 10.72 -3955.1 0 12175.50 89.38 139.54 8804.26 8738.01 4389.74 -244.24 5964404.61 676301.87 11.78 -3923.75 12216.47 90.09 136.03 8804.45 8738.20 4359.40 -216.72 5964374.93 676330.10 8.74 -3883.71 12267.50 89.56 131.46 8804.61 8738.36 4324.13 -179.86 5964340.53 676367.77 9.02 -3834.74 12304.75 89.03 130.40 8805.07 8738.82 4299.73 -151.72 5964316.80 676396.47 3.18 -3799.53 12335.82 91.49 129.70 8804.93 8738.68 4279.74 -127.94 5964297.37 676420.71 8.23 -3770.33 12392.95 91.67 126.89 8803.35 8737.10 4244.35 -83.13 5964263.05 676466.35 4.93 -3717.28 12435.33 93.78 125.83 8801.34 8735.09 4219.25 -49.04 5964238.77 676501.01 5.57 -3678.50 12490.53 92.81 123.02 8798.16 8731.91 4188.10 -3.59 5964208.69 676547.18 5.38 -3628.80 12524.05 92.64 120.91 8796.57 8730.32 4170.38 24.82 5964191.64 676575.99 6.31 -3599.25 12561.70 92.02 119.85 8795.04 8728.79 4151.35 57.27 5964173.39 676608.88 3.26 -3566.54 12599.85 91.49 119.50 8793.87 8727.62 4132.48 90.40 5964155.30 676642.44 1.66 -3533.63 12652.16 87.89 117.74 8794.15 8727.90 4107.43 136.31 5964131.33 676688.93 7.66 -3488.98 12693.98 86.48 117.39 8796.21 8729.96 4088.10 173.34 5964112.88 676726.40 3.47 -3453.73 12724.93 87.01 116.69 8797.96 8731.71 4074.05 200.86 5964099.48 676754.24 2.83 -3427.80 12745.63 88.07 115.99 8798.85 8732.60 4064.87 219.39 5964090.75 676772.98 6.13 -3410.59 12777.00 88.07 115.99 8799.91 8733.66 4051.13 247.57 5964077.68 676801.48 0.00 -3384.60 .. _._--._m.__-___...n______,----.--' ,- "'---____-n_'-' n----'_u -_u_.---------"----- 6J ~ '1 ;;¡ I- W C I I- " ':J ¡¡j ;: m ~ ~ 'f> ~ ~ 0 0 Cò (:) (:) "" ceo c. '" ~ ~ ~ ¡¡: '" (:) 0 :g 0 0 ~ 0 0 <'J " 0 ~ co g Z C 0 f= " :;: " 0:: â 9 ~ w g :z' c w 0:: CD 0 ~ g - ~ 0 0 " <t 0 (:) CO " 0 00 ~ i~ 0 ::J$ ?: ~ê 0 ceo ;; 0 0 <'J CD 0 CO " CD 0 0 CO CD 0 0 0 0 0 0> 0 0 CD 0 ;::: 0 0 '" ~ ¡¡: ai 0 (:) CO m 0 ~ ~ 0 0 CO 0 0 <'J 0 0 0 0 0 0 0 '"i?' .... (:) 0 '7 0 0 " 0 0 "7 0 0 "? 0 0 ~ 0 0 '? 0 0 '" 0 0 ~ 0 0 0 0 ::: 0 0 CO ';' 0 0 " 0 0 40 ';' 0 0 '" ';' 0 ;::: ';' 0 0 ::; 0 0 0 <t f' 0 ceo ~ 0 0 CD CD ¿ « "<t ;1: 0 .... 0 0 N (V) N 0 0 0 ¿¡ II') ?' ... m I: e ;; u Gì II: 'i u t: (! :> 0 40 CD CD 0 (:) 0> CD ..."'1\, Vbp f liP Exploration (Alaska), Jnc. Baker Hughes INTEQ Survey Report ... BA.KaR IUGI8 S --.. --. -.~--- --- - IN rEQ Compa.y: BP Amoco FIeld: Prudhoe Bay Site: PB OS 15 WeD: 15-41 Wellpatb: 15-41APB1 Date: 3/13/2001 TIme: 15:40:47 Page: 1 Co-ordlute(NE) Refereace: Well: 15-41, True North Vertical (TVD) Refereace: 58: 417/22/1994 00:00 66.2 Sectlo. (VS) Refereace: Well (0.OOE.0.OON.61.00Azi) S.rvey Calnl.doa Me~od: Minimum Curvature Db: Oracle Field: Prudhoe Bay North Slope UNITED STATES Map System:US State Plane Coordinate System 1927 Goo Datum: NAD27 (Clarke 1866) Sys Datum: Mean Sea Level Map Zone: Coordinate System: Geomagnetic Model: Alaska, Zone 4 Well Centre BGGM2000 Site: PB DS 15 TR-11-14 UNITED STATES: North Slope Site Position: Northing: From: Map Easting: Position Uncertainty: 0.00 ft Ground Level: 0.00 ft 5958837.36 ft 676296.98 ft Latitude: 70 17 35.236 N Longitude: 148 34 21.213 W North Reference: True Grid Convergence: 1.34 deg Slot Name: 41 Well: 15-41 15-41 Well Position: +N/-S 1176.23 ft Northing: +E/-W 379.93 ft Eastlng: Position Uncertainty: 0.00 ft 5960022.10 ft 676649.20 ft Latitude: Longitude: 70 17 46.805 N 148 34 10.139 W Wellpath: 15-41APB1 500292249270 Current Datum: 58: 41 7/22/199400:00 Magnetic Data: 3/13/2001 Field Strength: 57484 nT Vertical Section: Depth From (TVD) ft 0.00 Height 66.25 ft Drilled From: TIe-on Depth: Above System Datum: Declination: Mag Dip Angle: +EI-W ft 0.00 +N/-S ft 0.00 Survey: MWD Start Date: Company: Baker Hughes INTEQ Tool: MWD,MWD - Standard Engineer: TIed-to: From: Definitive Path Annotation 15-41 10810.00 ft Mean Sea Level 26.79 deg 80.79 deg Direction deg 61.00 3/1/2001 MD ft 10810.00 11818.00 TVD ft 8641.67 8798.01 Kick-off Point Projected to TD Survey MD Inel Azlm TVD SSTVD N/S EIW MapN MapE DLS VS ft deg deg ft ft ft ft ft ft deg/100ft ft 10810.00 13.27 358.76 8641.67 8575.42 5456.68 -1018.31 5965452.99 675502.99 0.00 1754.82 10869.00 39.50 15.30 8694.12 8627.87 5482.02 -1013.41 5965478.44 675507.29 45.77 1771 .39 10899.00 49.00 24.10 8715.61 8649.36 5501.62 -1006.25 5965498.20 675513.99 37.65 1787.15 10935.00 56.60 18.80 8737.37 8671.12 5528.30 -995.84 5965525.11 675523.77 24.14 1809.19 10976.00 67.60 15.30 8756.53 8690.28 5562.89 -985.29 5965559.94 675533.51 27.86 1835.19 11002.00 72.80 20.60 8765.34 8699.09 5586.14 -977.74 5965583.36 675540.51 27.70 1853.07 11040.00 79.50 24.10 8774.43 8708.18 5620.23 -963.70 5965617.77 675553.74 19.77 1881 .87 11081.00 85.70 28.70 8779.71 8713.46 5656.62 -945.63 5965654.57 675570.95 18.77 1915.32 11118.00 87.90 33.30 8781.78 8715.53 5688.27 -926.61 5965686.66 675589.22 13.76 1947.30 11154.00 86.80 35.70 8783.44 8717.19 5717.91 -906.24 5965716.76 675608.88 7,33 1979.48 11183.00 84.60 38.90 8785.62 8719.37 5740.91 -888.72 5965740.17 675625.86 13.36 2005.96 11224.00 83.70 43.90 8789.80 8723.55 5771.49 -861.76 5965771.38 675652.09 12.33 2044.37 11287.00 81.10 48.00 8798.13 8731.88 5814.90 -816.89 5965815.83 675695.92 7.66 2104.65 11343.00 85.10 51.10 8804.86 8738.61 5850.96 -774.60 5965852.86 675737.35 9.01 2159.12 11372.00 88.50 54.00 8806.48 8740.23 5868.56 -751.61 5965870.99 675759.91 15.40 2187.76 11410.00 90.60 59.60 8806.78 8740.53 5889.35 -719.83 5965892.53 675791.20 15.74 2225.64 11451.00 91.00 63.80 8806.21 8739.96 5908.79 -683.75 5965912.80 675826.82 10.29 2266.62 11496.00 90.70 70.20 8805.54 8739.29 5926.36 -642.35 5965931.34 675867,78 14.24 2311.34 "to""--.I.. ~ '"" lì, "ì . .. ¡-- -Ii:. .. ' ..."~. { ( liP Exploration (Alaska), Inc. Baker Hughes INTEQ Survey Report IIi. BAK" NUGMI S '-"-"'-"'----""'_----"'-'-'. INTEQ Company: BP Amoco Field: Prudhoe Bay Site: PB OS 15 WeD: 15-41 Wellpatlt: 15-41APB1 Survey Date: 3/13/2001 TIme: 15:40:47 Page: 2 OHJrdlaate(NE) Reference: Well: 15-41, True North Vertical (TVD) Refereace: 58: 41 7/2211994 00:00 66.2 Sectloa (VS) Refereace: Well (0.ooE,0.00N,61.00Azi) Sarvey Calc.lado. Metltod: Minimum Curvature Db: Oracle MD I.d Azlm TVD SS TVD N/S E/W MapN MapE DLS VS ft deg deg ft ft ft ft ft ft deg/1 OOft ft 11529.00 88.90 70.50 8805.65 8739.40 5937.45 -611.27 5965943.17 675898.59 5.53 2343.90 11563.00 90.10 74.00 8805.95 8739.70 594 7.82 -578.90 5965954.29 675930.71 10.88 2377.24 11594.00 90.50 76.80 8805.79 8739.54 5955.63 -548.90 5965962.80 675960.51 9.12 2407.27 11643.00 92.20 81.80 8804.63 8738.38 5964.72 -500.78 5965973.02 676008.40 10.77 2453.76 11710.00 92.40 88.79 8801.94 8735.69 5970.21 -434.11 5965980.08 676074.93 10.43 2514.74 11749.00 92.80 93.40 8800.17 8733.92 5969.47 -395.16 5965980.25 676113.87 11.85 2548.44 11788.00 91.40 95.80 8798.74 8732.49 5966.34 -356.32 5965978.04 676152.78 7.12 2580.90 11818.00 91.40 95.80 8798.01 8731.76 5963.31 -326.48 5965975.71 676182.68 0.00 2605.52 DETAILS Azimuths to True North l w~""'" (15-4111541APB1) Magnetic North: 26.79' .:=."".d By.~ Pot", Os. 311312001 Magnetic Fieid Strength: 57484nT Díß~~g~1t'g8; Model: BGGM2000 Co-ordinate (N/E) Reference Well Centre 1541, True North Vertlcai (TVD) Reference System: Mean Sea Levai Seclion (VS) Reference: Siot - 41 (Om,O,OO) Measured Depth Reference. 58: 41712211994 00:00 66.2 Calcuiatlon Method: Minimum Curvature Slol.41 (0.00,0,00) 61.00' Rig: CDR 1 Deplh Reference: 58: 41 712211994 00:00 66,2511 REFERENCE INFORMATiON ANNOTATIONS No TVO MO Amolabo, 8575.42 1081000 873176 1181800 L__- 1400 1450 1500 1550 1600 1650 1700 1750 1800 1850 1800 1950 2000 2050 2100 2150 2200 2250 2300 2350 24D0 2450 2500 2550 2800 2650 2700 2750 2800 2850 2900 2950 3000 3050 3100 3150 3200 3250 3300 3350 Vertical Section at 61.00' 3/13/2001 3:52 PM ~' ( ~lJ&\lTŒ (ID~ ~~~~~~ ALAS KA 0 IL AND GAS CONSERVATION COMMISSION TONY KNOWLES, GOVERNOR 333 W. ]TH AVENUE. SUITE 100 ANCHORAGE. ALASKA 99501-3539 PHONE (907) 279-1433 FAX (907)27~7542 John Cub bon CT Drilling Engineer BP Exploration (Alaska) Inc. POBox 196612 Anchorage AK 99519-6612 Re: Prudhoe Bay Unit 15-41B BP Exploration (Alaska) Inc. Permit No: 201-146 Sur Loc: 1474' SNL, 4566' PEL, SEC. 22,T11N, RI4E, UM Btmhole Loc. 2596' NSL, 4376' WEL, SEC. 15, TIIN, RI4E, UM Dear Mr. Cubbon: Enclosed is the approved application for permit to drill the above referenced well. The pelmit 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. Annular disposal has not been requested as part of the Permit to Drill application for Prudhoe Bay Unit 15-41B. Blowout prevention equipment (BOPE) must be tested in accordance with 20 AAC 25 035. Sufficient notice (approximately 24 hours) must be given to allow a representative of the Commission to witness a test of BOPE installed prior to drilling new hole. Notice may be given by contacting the Commission petroleum field inspector on the North Slope pager at 659-3607. Sincerely, ~L{,ct, .11 / Þk<-~,<rXf Julie M. Heusser Commissioner BY ORDER OF TH~,)COMMISSION DA TED this î - day of August, 2001 jjc/Enclosures cc: Department of Fish & Game, Habitat Section w/o enc!. Department of Environmental Conservation w/o enc!. (' STATE OF ALASKA ( ALASKA OIL AND GAS CONSERVATION COMMISSION PERMIT TO DRILL 20 MC 25.005 t: ' ' J)~ÇQ /J P/'G 1 a. Type of work 0 Drill II Redrill 1b. Type of well 0 Exploratory 0 Stratigraphic Test II Development Oil 0 Re-Entry 0 Deepen 0 Service 0 Development Gas ia"s~~le Zone 0 Multiple Zone 2. Name of Operator 5. Datum Elevation (DF or KB) 10. Field and Pool BP Exploration (Alaska) Inc. KBE = 66.25' Prudhoe Bay Field I Prudhoe 3. Address 6. Property Designation Bay Pool P.O. Box 196612, Anchorage, Alaska 99519-6612 ADL 028306 4. Location of well at surface 7. Unit or Property Name 11. Type Bond (See 20 AAC 25.025) 1474' SNL, 4566' FEL, SEC.22, T11N, R14E, UM Prudhoe Bay Unit At top of productive interval 8. Well Number 3919' NSL, 297' WEL, SEC. 16, T11N, R14E, UM 15-41B Number 2S1 00302630-277 At total depth 9. Approximate spud date 2596' NSL, 4376' WEL, SEC. 15, T11 N, R14E, UM 09/01/01 Amount $200,000.00 12. Distance to nearest property line 13. Distance to nearest well 14. Number of acres in property 15. Proposed depth (MD and TVD) ADL 028303, 2683' MD No Close Approach 2560 12779' MD I 8690' TVDss 16. To be completed for deviated wells 0 17. Anticipated pressure {see 20 MC 25.035 (e) (2)} Kick Off Depth 10710' MD Maximum Hole Angle 90 Maximum surface 2236 psig, At total depth (TVD) 8800' / 3300 psig 18. Casing Program Specifications Setting Depth ("\1 of (:gmgnt (~i'Ze TCID .... Hole (' Weiaht Grade f"".nllnlina Lenath MD TVD MQ. ITVD linclude staae data) 3" 2-3/8" 4.7# L-80 ST-L 2539' 10240' 8015' 12779' 8690' 54 sx Class 'G' 19. To be completed for Redrill, Re-entry, and Deepen Operations. Present well condition summary Total depth: measured 11818 feet Plugs (measured) Top of 2" CT (filled w/ cement) at 10750' (03/01) true vertical 8798 feet Effective depth: measured 10750 feet Junk (measured) Top of milllmotor BHA at 11605'; 2" CT f/1 0750' to 11380' true vertical 8583 feet w/ cement; Cement f/11500' - 11380' Casing Length Size Cemented MD TVD Structural Conductor 110' 20" 260 sx Arcticset (Approx.) 110' 110' Surface 3925' 9-5/8" 944 sx PF 'E', 375 sx PF 'C' 3964' 3558' Intermediate 1 0372' 7" 307 sx Class 'G' 1 04381 8276' Production Liner 880' 5" 112 sx Class 'G' 10270' - 10810' 8111' - 8642" RECEIVED Perforation depth: measured Open Hole wI Fish: 10814' - 118181 JUL 1 7 2001 true vertical Open Hole wI Fish: 8646' - 8798' ^ 1-:1t:""-'-' nil R. r..~~ Cdns. Commission 20. Attachments II Filing Fee 0 Property Plat II BOP Sketch 0 Diverter Sketch AJ~rogram II Drilling Fluid Program 0 Time vs Depth Plot 0 Refraction Analysis 0 Seabed Report 020 AAC 25.050 Requirements Contact Engineer Name/Number: JohnJtiul)~on¡¡ ~-4158 ot' N\~('~ ~1\:5CtO, 5'(..4-Sc."" Prepared By Name/Number: Terrie Hubble, 564-4628 21, I hereby certify that t~ rz:¡rg i ~ ; and correct to the best of my knowledge 7/kbø/ Signed John Cubbon I All 'j ~~ Title CT Drilling Engineer Date '"",," II Commission Use '.Onl\ f . Permit Number vi.. V API Number APr.Y9} Date See cover letter :L r') 1- /. ~'-" 50. 029-22492-02 - '.01 for other reQuirements Conditions of Approval: Samples Required D. Yes -§ No Mud Log Required DYes aNo Hydrogen Sulfide Measures ~ Yes No Directional Survey Required ~ Yes D No Required Working Pressure for BOPE D 2K 0 3K D 4K D 5K D 10K D 15K ~3.5K psi for CTU Other: ORIGINAL SIGNED IV by order of Date o~/o 7/0 f Approved Bv . I.JI .. -- . ~ Commissioner the commission Form 10-401 Rev. 12-01-85 -. 'w' U K f LJ ! !\f l~ f SJbmit hi Triplicate \ --.. ( ( BPX 15-41 B Sidetrack Summary of Operations: A CTD sidetrack of well 15-41 B will be drilled. Specific prep work, (Phase 1) and drilling, (Phase 2) operations are detailed below. Phase 1: Isolate & integrity test inner annulus, (IA). Drift tubing and tag PBTD in liner. Set a cement plug for kickoff. Mill window with service coil, if available. Planned for August 15, 2001 . Drift well and tag as deep as possible with slickline. . Liquid pack and integrity test the IA. . Spot a cement plug from PBTD to approximately 100 feet above the kickoff point, which will be at approximately 10,710' MD (8,478' TVDss). . Mill window with service coil if available. Phase 2: Drill and Complete CTD sidetrack: Planned for September 1, 2001 2" coil will be used to drill a -2,000 foot, 3" open hole sidetrack, (as per attached plan) and run a solid, cemented & perforated 2-3/8" liner completion. Mud Program: . Phase 1: Seawater . Phase 2: Seawater and Flo-Pro (8.6 - 8.7 ppg) Disposal: . No annular injection on this well. . All drilling and completion fluids and all other Class II wastes will go to Grind & Inject. . All Class I wastes will go to Pad 3 for disposal. Casing Program: . 2-3/8", l-80, solid liner will be run from 10,240'md (TOl, 8015' TVDss) to TD at approximately 12,780'md. Liner will be cemented to approximately 160' above the window with approximately 11 bbls (annular volume plus 25% excess in OH) of 15.8 ppg class G cement. Well Control: . BOP diagram is attached. . Pipe rams, blind rams and the CT pack off will be pressure tested to 300 psi and to 3,500 psi. . The annular preventer will be tested to 400 psi and 2,200 psi. Directional . See attached directional plan. . Magnetic and inclination surveys will be taken every 30 ft. No gyro will be run. Logging . An MWD Gamma Ray log will be run over the open hole section. . A memory CNl will be run inside the liner. Hazards . A recent H2S concentration for 15-41 is not available. However, there are currently no wells on Pad 15 that are producing with H2S concentrations in excess of 100 ppm. . The well path will cross one mapped fault. This fault, with an estimated 20 feet of throw, is not expected to cause severe fluid losses. (" ( Reservoir Pressure Reservoir pressure is estimated to be 3,300 psi at 8,800ss. Maximum surface pressure with gas (0.12 psi/tt) to surface is 2,236 psi. ( lREE = 4-1115' ON 51< WELL H EÄ D= Frvc AClUA TOR= BA KER C KB. B..EV = 66' BF. B..EV = -_ ? KOP= 1450' Max An e= 53 7281' Ostum rvÐ = Ostum lVD= 8800' SS 10-3/4" CSG, 45.5#. L-80, 10 = 9.953" 39' 9-5/8" CSG, 47#, L-80, 10 = 8.681" 3964' 3-1/2" TBG, 9.2#, FOX 13CRSO, 10 = 2.992" 1 0148' Minimum 10 = 2.750"@ 10267' 3-1/2" PARKER SWN NIPPLE I 7" X 5" TIW LNRlI-f\JGRlPKR (-I 10270' I 3-1/2" TBG, 9.2#, L-80, .0087 bpf, 10 = 2.992" 10281' 7' COO, 26#, L-80, 10 = 6.276" 10438' PERFORATION SUIvIv1ARY REF LOG: SWS GRlCCL 11-11-94 ANGLEA TTOP PERF: f\bte: Refer to Production DB for historical perf data SIZE SPF INTER\! AL Opn/Sqz DATE NO PERFS ( 15-41A SAFETY NOTES: OOILEDTBG ASH IN WELL (SIDETRACK SECfION). 3.5" Ut\lQLE OVERSI-OTWAS SPACED OUT TO SWALLOWTBG STUB@10,170'. ŒPlH [)SmEPANCY DUE TO [)FFERENCE BETWEEN E-Llf\E & RIG MEÄSURBv1ENTS. 5" LNR, 15#, 13m-SO, .0196 bpf, D = 4.408" 11150' STA 1 2 3 4 GAS LFT MA.t'ÐRELS MD TVD DEV TYPE MAN 3577 3237 48 CA-FM-IO 6745 5322 53 CA-FM-IO 9125' 6965 31 CA-FM-IO 10008' 7787 8 CA-FM-IO LA TCH ~ ~ ~ ~ 10080' 10102' 10127' 10170' 10156' 10207' 10210' 10214' 10245' 10267' 10281' 10750' CTM 3-1/2" I-ES X t\lP, 10 = 2.813" 3-1/2"I-ESX t-IP,ID =2.813" CI-EMCALL Y cur lEG - 12/23/00 3-1/2" UNlQLE OV ERSI-OT, 10 = 3.625" 3-1/2" X 4-1/2" XO 7" X 4-1/2" BAKER SABL-3 PKR, 10= 3.875" 4-1/2"X 3-1/2" XO 3-1/2" OTIS X NIP, 10 = 2.813" 3-1/2" PARKERSWN NIP, 10= 2.75" 3-1/2" lUBING TAIL WLffi B..MTT DA.lE NOT AVAILABLE 2" OOIL TBG, TOP OF FISH, 3RD CI-EM CUT (SUCCESSFLL) MILLED WINDOW IN 5" LNR TOP @ 10,810' BTM @ 10,814' DA. lE REV BY COM~NTS DATE REV BY COM~NTS 11/12/94 ORIGINAL OOMA.ETION 03/05/01 ABORlED SIDETRA CK 08/09/94 WORKOVER OS/24/01 CI-VTP OORRECfIONS 12/04/00 SIS-isl 00 NV ERfED TO CANVAS 01/13/01 LAST WORKOVER 01/19/01 SIS-MD FNAL 10925' DEPTH OF 2ND CI-EM cur (DID NOT FREE PPE) 11150' DEPTH OF 1 ST CI-EM cur (DD NOT FREE APE) 11380' 11687' BTM OF FISH (BHA #1) END OF ASH - BHA. TOP OF ASH - BHA. (51' LONG) 11738' PRLDI-OEBAY LNIT WELL: 15-41A PERMIT f\b: 94-094 AA No: 50-029-22492-00 Sec. 16 T11N R14E 299.39 FB.. 1205.99 FN... BP Exploration (Alas ka) (' ( TREE = 4-1/16" eM' 5K waLHEAD= FMC ÀC1UÅTöR~ . , BAKÈR C , ., - ,.. ' . "".. KB. REV = 66' .-... ... ."'" .... ~F..~_ey_.~-_.., -_-.'Oh'. .-..7. KOP= _? . .... ...- .' -0, , , .~~ng,!-~_._..... -'--'-- Datum t..I) = .------........-...-, Datum lVD= 15-418 PROPOSED CTD SIDETRACK SAFETY NOTES: COLED iBG FISH N WB.l (SÐETRAO< SECTK:>N). 3.5. lXIIlQUE OVERSHOT WAS SPAC8) OUT TO SWALLOWTBG STUB @10,170'. DEPTH DISCREPANCY DUE TO DFFERENCE BETWæ-J E-LNE & RIG MEAS~. un .......-. -.... .0.. 8S00' SS 10-314. CSG, 45.5#, L-SO, D = 9.953" 39' 9-518. CSG, 47#. L-80. D = 8.681. 3964' 3-112. iBG, 9.2#, FOX 13CR80, D = 2.992. ? Minimum 10 = 2.750"@ 10267' 3-1/2" PARKER SWN NIPPLE TOP OF 5. LNR 10259' 3-1/2. TBG, 9.2#, L-80, .00S7 bpf. ID = 2.992" 10281' 7" CSG, 26#, L-SO, D = 6.276" I 10438' ÆRFORA TION SUMMARY REF LOG: SWS GRlCCl 11-11-94 ANGLEATTOPÆRF: 17 @ 10957 Note: Refer to Production DB for historical perf data SIZE SPF MERV AL Opn/Sqz DATE 2" CT Fish f/10750' - 11380' (cemented) P&A'd w/17 ppg Cement TOC 10757' 5" LNR, 15#, 13m-80. .0196 bpf, D = 4.40S" 11150' GA S L FT M\ NDR8.. S STA M) lVD DEV TYÆMAN LATa-t 1 3577' CA - FM-iO RK 2 6746' CA - FM-fO RK 3 9125' CA - FMHO RK 4 10008' CA - FMHO RK 10080' 10102' 1012T 10170' 10156' 1020T 10210' 10214' 10240' 10245' 10267' 10281' 3-112. HES'~ Nm.E. 0 = 2.813" 3-1/2. HES'~ NIPPLE. 0 = 2.S13" a-EMCALL Y CUT TBG - 12123/00 3-112. UN1QUEOVERSHOT, [) = 3.625" DATE REV BY COMMENTS DATE REV BY COMMefrS 11/12194 ORJGNAL COMPLETION 03/05/01 A BORTEÐ S DETRA CK 08109/94 WORKovm 04/18/01 Ct-VTP CORRECOONS 12104/00 SIS-isl CONVERTED TO CAtoN AS 04124/01 per Proposed ST 15-41B 01/13/01 LAST WORKOVER 01/19/01 S IS- tvf) FNAL 3-112. X 4-112. XO r X 4-1/2" BAKERSABL-3 PACKER 4-112. X 3-1/2. XO 3-112. OTIS X Nm.e. D = 2.813" 3-1/2" PARKER SWN NIPPLE. () = 2.75. 3-1/2" WBING TAL WLEG 10550' Cerrent Top I 10710' H Cerrent Rarrp KOP (TOW) ",-",-:,.,,1t't1:~""f' ".<1,.. '. j . ""'.. 0.....- 0, 2-3/S. L-80 LNER. Cerrented & Perforated 12780' MILLED WINDOW IN 5" LNR TOW @ 10,810' 15-41A TDin OH Mill! Motor BHA Fish PRUDHOE BAY UNIT WRL: 15-41B Proposed ST PERMIT No: 94-094 API No: 50-029-22492-00 Sec. 16 T11N R14E 299.39 Fa. 1205.99 FNL BP exploration (Alaska) ( ( ObP BP Amoco Baker Hughes INTEQ Planning Report IB il8 IJAKD. HUGHlS -----.--.---.--.----- lNTEQ -- - - ------.- ----- ---------.----.---- ...~._-- ~- --------- -----------.------- ----- -~-------'- --.-- --.---- - -----------~-_.-_._---.-.---'----~---'-------'- --- Company: BP Amoco Date: 7/10/2001 Time: 17:09:14 Field: Prudhoe Bay Co-ordinate(NE) Reference: Well: 15-41, True North Site: PB DS 15 Vertical (fVD) Reference: System: Mean Sea Level Well: 15-41 Section (VS) Reference: Well (0.00N,O.00E.150.00Azi) Lc:-~~I!~~~~c:-~~;,=~2_~~~~c-cc=:o_c:=::~-cc:=' "-:::'="':cC'.-'c::'."=='::C=:C -,-==~=-c.-::""- == ,._==:::~~~~~..~-~~~:~~~-~~~:~~~~~,,= .:..=._~~~~~:~=~:~~~~~~cc:o":,, -ceo: --C'C . D ~ : .:~~~:~-~;:::.===_.J Page: 1 Prudhoe Bay North Slope UNITED STATES Map System:US State Plane Coordinate System 1927 Map Zone: Alaska. Zone 4 Geo Datum: NAD27 (Clarke 1866) Coordinate System: Well Centre Sys Datum: Mean Sea Level Geomagnetic Model: BGGM2001 I ------------------------------------- -- -.----- _.._-_._-~._--- ----.---.-------.--.--- --------~-----------,-------'--'" -..... ----_.-- ._----_..--_J Field: ----.. _u,-,-------,-",--.---.-.-------------- -.- --.-----.-.--.-- ----.---.- ---_._-----_._---------~_. --.-. --.u_---..-.- --------_. ---------- --..-.---.--- .-.---- -.-.-, PB DS 15 TR-11-14 UNITED STATES: North Slope ; Site Position: Northing: 5958837.36 ft Latitude: 70 17 i From: Map Easting: 676296.98 ft Longitude: 148 34 Position Uncertainty: 0.00 ft North Reference: 1- ~~~un~.!-~~el: --------.--- ---~'~~-_f!.._-------_._--------~_._---~_.- Gri~_~_onver_~nc~.:..___----- Site: 35.236 N 21.213 W True 1.34 deg -----. -.-.- -- --~.__._----_._- -- '--'--- ---'- - -----------~------ ---_._----~---- -- ._-- --.----- ------- Well: 15-41 15-41 Well Position: +N/-S 1176.23 ft Northing: +E/-W 379.93 ft Easting: Position Uncertainty: 0.00 ft Slot Name: 41 5960022.10 ft 676649.20 ft Latitude: Longitude: 70 17 46.805 N 148 34 10.139 W ----.-------.-----.-.--- ..- -,------'---u-'-- -- -----. --.- - -----'-' ..--- - ------------ ----.--------------.------- .--.------------..---.--. ...-- --------- ---'--- ----.-. ------.---..-.--.---.-----.-.. --.--.---.-.- .---..--..------ ~_.__.-._---_.._--_. --..-----.----- -- ----.._----_..~---'-'--"---- Wellpath: Plan#2 15-41 B Drilled From: 15-41 500292249202 Tie-on Depth: 10710.00 ft Current Datum: 58: 41 7/22/199400:00 Height 66.25 ft Above System Datum: Mean Sea Level Magnetic Data: 7/10/2001 Declination: 26.69 deg Field Strength: 57500 nT Mag Dip Angle: 80.80 deg Vertical Section: Depth From (TVD) +N/-S +E/-W Direction ft ft ft deg [= -~-~=~=~~~~~:_:~.~~-~~~-=~§~?~- ~= _._'.~_:_~~~~_.~-~~ u_---~:_:- _._~~ ~O~:_--: -~--~~-~~--~~ --~-~-O'. ~~_:_---~:_~=.~~.~~ ~~O~-:~~--~==~~~~~~:=-=- .=~~=---=-=-~~:_~~=-=:. l:~~~~:~J~~t~~~~:~:: ~~~ =~= ~~==J~i~t~~~==~::~~e:~~th=~~~~~~=--- ~~ Targets ,-....- ... .-. --...-.. ,-......"'" - ......... --..--.. -........ " ..... -'- "-"""'" _......_.._.. ... .......' -...., -.- ..... ..._- -...- -.,..-. - -.. - -- ..-. ..._..._..~-_...._. _.-..---.. ...... '-. ....".......-...--..-.--.-......--. -........-. .__.,,----~.._..__._- -.-..--...--- _..__.._-_._-_..._-_._---~_.._---_.._~.~----, - - -- - - - - - - -- Map Map <---Lati,tude ---> ,<-'--. Longitude ---> ' I Name DescriptionTVD +N/-S -- +E/-WNorthing Easting Deg Min Sec DegMiri See: ' 1_- ft _oft -- ft- ft ft- , I - - - - - - -, -- - - - - ~:: ~:::~ :~::~:::~::: - :::::~:::: :~::;:.: -:: :: :~::~: ~: : :::::":-~ L- ~~_T~ @ ~ - --- - --- ~:. O~_~B3. 52_- ~4~~~ ~~:::~~ 6 7~~~"'-: ...:~ _::~:- -~~~.-::.... Annotation í"" -.-..-.--..., ....,-c' -_.,:--_....~,;~..., .-----. '-"'.---"', ..._._...-.-...._.__..._-_.~.._......._- ~-_... .'-" ....- ....... h___- ......-- ':., ""'~:" ..--.-.--------.-- , l\iD TVD ! ,.......-.-.-.:ft -,_._..,:_-,._--:_.._..----,_._~_.......__c-----..----:--.__....._------_....-'-_~_--n______--_....--.................._._"...._.."""---"'-...;"',_C.....---..C...-."....-...-----...----:............-.....-,--"""'--..-..........-.....-"-""'" C....-.-.-..-..-..-..:...-...-..........-.--.. 10616.83 8386.34 TIP 10710.00 8477.78 KOP 11035.00 8690.09 1 11178.66 8689.76 2 11528.66 8689.76 3 12278.66 8689.76 4 12778.66 8689.76 TD '--~-"-"""._'--'-- -.. -,..--...-... -...--.--.--.........,-.--.....- ,....--.-..-.- --....--......"..-.-..--......-- -""'---'---'" ..__....~ .. . ..." , . . ", "'--""-"'-""-'-'."-..-----...--..........--'--"-"-----""-------""-...----....-,.".."..- -----,.._,- -~------'_."'-------'."-'--'-----"-"'-'_.._-----'------------..._._'__n____..--------..-"-----"--'----'--"'--------- _.._-,-".. _._,,---- -----... .--.-..- .....-----------.----------------------------------. Plan Section Information !' MD loel I.___....-.-...!t......,--...-.....--.- ~~-~~...__..._.... 10616.83 10.46 10710.00 11.66 11035.00 90.26 11178.66 90.00 L2_2~~8~~~--____9~~_~_~ __---_--_n___--------'---.--"-.-------------.----- --., Azim TVD deg ft -.. -""'."".".."-"""""-"-""""-'-..-----."'-"""----- 0.15 8386.34 0.33 8477.78 128.95 8690.09 143.32 8689.76 178.32 8689.76 +N/-S+E/;'W DLS Build Turn TFO Targe¡--'-~-~---:l '...- ......~-c._--" .--- -, ".-. ._-~... -.-.. ..- ._, -~-~~~ ~~9.~.. .~.~~! ~.~~-~, .?_~.~(!99!t.._._...- .~:~.- ... .-.... '-"'-.' .-._-- .-- .., ,.. ".......' ..- ...-........,. ..,..., -.--. - -.--.-- --_. --. ..J 5417.25 -1018.22 0.00 0.00 0.00 0.00 5435.13 -1018.14 1.29 1.29 0.19 1.74 5342.23 -848.53 30.00 24.18 39.58 128.00 5238.93 -749.25 10.00 -0.18 10.00 91.00 4913.48 -636.01 10.00 0.00 10.00 90.00 - ...-----.___--M..___.----..-----.----... "'n__--_._- ---- -------, ---..-------n-.--.--. ObP ""-- "~" ".. "",,- -"." , ""..... (' ( BP Amoco Baker Hughes INTEQ Planning Report - ---.. ,,- "_.,, ".. -'.-..-.."..-". .. . ... """""- .-.. .".. .. Riï8 BAIŒR HUGtIIS '----'--'-- lNTEQ - Company: BP Amoco Date: 7/10/2001 Time: 17:09:14 Page: 2 : Field: Prudhoe Bay Co-ordinate(NE) Reference: Well: 15-41, True North ' Site: PB DS 15 Vertical (fVD) Reference: System: Mean Sea Level . j Well: 15-41 Section (VS) Reference: Well (0.00N,O.00E,150.00Azi) : l"..~~.~I!.~!~..:- ""'. ~.I~,,~~_~~,,~~._- . "". --........".."---.---........."".."."."...".".-.,, "'-u""'-"'-""" "."....__._._..""_.~~~~~,,,,~~~~~~.~t~~.~.~~!~~~,,:_._.__.~i~!~~~.."~.~~~~~~.....".._-_._-_.~~.=""..,, O~9~~"....".._,,--1 Plan Section Information -u"---'--- .. "'--"--------"------------""'------"--"--"-"--"---'--'-----"---, I MD Incl Azim TVD +N/-S +EI-W DLS Build Turn TFO Target : l_- ...on- --- "'~'" ,,- - _.. -.... -"", """ ~:~" ,,--,,-, ", "" ..._..~ ~..~-- ", "-",,, ",- --..""" _... """""" ._~..._.- - - , "" ----",,- m.. ~......_.._.. "",- """'-~ _..._m."" "" """ ~.~~~?~. - ~..: ~ ..~~ ~'" ,,~,:~!- ~.~.~. "-,, - "-,, ~-~~..- -""-"'" "'" .....- -'" -"" -'" "'--' -""""" -. ",--""" "-"'" """ ", ---""'" "", -",.. j .. 12278.66 90.00 103.32 8689.76 4372.77 -195.26 10.00 0.00 -10.00 270.00 : 12778.66 90.00 153.32 8689.76 4072.52 184.71 10.00 0.00 10.00 90.00 ' -"---.-.--..--.----------...-.. "-"-'---""---"----"""-'-"""- .- "----'" ----..---- -----"---------'--"""-"-----"'----"---"--'----"""--'---- --"" -- ---""""....! Survey . - ---- - - '-' --,,--,---- - ---" . .-. ---- .._-.- -. _... --..- .... -. ""--. --"- -" -... ___"m- - ---.--.-... -.----" ..__.. .. Tool -I MD Incl Azim SSTVD N/S EIW MapN MapE DLS VS TFO ft deg deg ft ft ft ft ft deg/100ft ft deg ..... ""'-""'-"'-"'--'- """-'---"'......--...... ....-- '--"--"-----,--"-,,-,-,,-,,,,,,,-, ...... -'--'-""-' -..-...--.-....-.. -.....--........-........... "--...........- ..... .............-.....-.....-......-..... -.........-..-.. _..m___. ....-.-.-,,-.....-... ... .......... - ....-. -.--.. .....""" """ --......... . ... 10616.83 10.46 0.15 8386.34 5417.25 -1018.22 5965413.58 675504.01 0.00 -5200.59 0.00 TIP 10625.00 10.57 0.17 8394.37 5418.74 -1018.22 5965415.07 675503.98 1.29 -5201.87 1.74 MWD 10650.00 10.89 0.22 8418.94 5423.39 -1018.20 5965419.72 675503.88 1.29 -5205.90 1.72 MWD 10675.00 11.21 0.27 8443.47 5428.18 -1018.18 5965424.51 675503.79 1.29 -5210.04 1.67 MWD 10700.00 11.53 0.31 8467.98 5433.11 -1018.15 5965429.44 675503.70 1.29 -5214.29 1.62 MWD 10710.00 10725.00 10750.00 10775.00 10800.00 10825.00 10850.00 10875.00 10900.00 10925.00 10950.00 10975.00 11000.00 11025.00 11035.00 11050.00 11075.00 11100.00 11125.00 11150.00 11175.00 11178.66 11200.00 11225.00 11250.00 11275.00 11300.00 11325.00 11350.00 11375.00 11400.00 11425.00 11450.00 11475.00 11500.00 11525.00 11528.66 11550.00 11575.00 11600.00 11625.00 11650.00 11.66 9.56 10.32 15.26 21.70 28.65 35.80 43.06 50.38 57.73 65.10 72.49 79.89 87.29 90.26 90.23 90.19 90.15 90.10 90.06 90.01 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 0.33 22.18 66.51 92.67 105.00 111.73 115.99 118.97 121.24 123.06 124.62 125.99 127.26 128.47 128.95 130.45 132.95 135.45 137.95 140.45 142.95 143.32 145.45 147.95 150.45 152.95 155.45 157.95 160.45 162.95 165.45 167.95 170.45 172.95 175.45 177.95 178.32 176.19 173.69 171.19 168.69 166.19 8477.78 8492.53 8517.19 8541.58 8565.29 8587.90 8609.04 8628.34 8645.47 8660.14 8672.09 8681.13 8687.09 8689.88 8690.09 8690.03 8689.93 8689.86 8689.81 8689.77 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 5435.13 5437.80 5440.62 5441.36 5440.01 5436.59 5431.16 5423.81 5414.67 5403.90 5391.67 5378.20 5363.73 5348.49 5342.23 5332.65 5316.02 5298.59 5280.40 5261.48 5241.86 5238.93 5221.58 5200.69 5179.21 5157.20 5134.70 5111.74 5088.37 5064.63 5040.58 5016.25 4991.70 4966.96 4942.09 4917.13 4913.48 4892.17 4867.27 4842.48 4817.87 4793.47 -1018.14 -1017.66 -1014.82 -1009.47 -1001.71 -991.66 -979.51 -965.45 -949.73 -932.61 -914.40 -895.39 -875.93 -856.33 -848.53 -836.99 -818.32 -800.40 -783.26 -766.92 -751.43 -749.25 -736.82 -723.10 -710.30 -698.45 -687.57 -677.69 -668.81 -660.97 -654.16 -648.41 -643.73 -640.12 -637.60 -636.16 -636.01 -634.99 -632.78 -629.49 -625.12 -619.68 5965431.45 5965434.13 5965437.02 5965437.88 5965436.71 5965433.53 5965428.39 5965421.37 5965412.61 5965402.24 5965390.45 5965377.43 5965363.41 5965348.64 5965342.57 5965333.26 5965317.08 5965300.08 5965282.29 5965263.76 5965244.51 5965241.64 5965224.59 5965204.02 5965182.86 5965161.13 5965138.89 5965116.17 5965093.02 5965069.48 5965045.59 5965021.40 5964996.97 5964972.32 5964947.52 5964922.61 5964918.96 5964897.68 5964872.84 5964848.14 5964823.64 5964799.38 675503.67 675504.08 675506.86 675512.19 675519.98 675530.10 675542.38 675556.61 675572.54 675589.90 675608.40 675627.71 675647.51 675667.46 675675.40 675687.16 675706.21 675724.54 675742.10 675758.88 675774.83 675777.08 675789.91 675804.11 675817.41 675829.78 675841.18 675851.60 675861.02 675869.43 675876.79 675883.11 675888.37 675892.56 675895.67 675897.69 675897.93 675899.45 675902.24 675906.11 675911.06 675917.07 1.28 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.00 30.03 10.00 10.00 10.00 10.00 10.00 10.02 10.02 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 -5216.03 -5218.10 -5219.12 -5217.09 -5212.04 -5204.05 -5193.27 -5179.88 -5164.10 -5146.22 -5126.52 -5105.36 -5083.09 -5060.09 -5050.77 -5036.70 -5012.97 -4988.92 -4964.59 -4940.03 -4915.30 -4911.67 -4890.43 -4865.48 -4840.48 -4815.50 -4790.56 -4765.74 -4741.06 -4716.58 -4692.35 -4668.41 -4644.80 -4621.57 -4598.77 -4576.44 -4573.20 -4554.23 -4531.57 -4508.46 -4484.96 -4461.11 1.55 KOP 128.00 MWD 106.51 MWD 62.78 MWD 37.22 MWD 25.51 MWD 19.40 MWD 15.80 MWD 13.49 MWD 11.93 MWD 10.86 MWD 10.11 MWD 9.61 MWD 9.31 MWD 9.12 1 91.00 MWD 91.01 MWD 91.02 MWD 91.02 MWD 91.03 MWD 91.10 MWD 91.11 2 90.00 MWD 90.00 MWD 90.00 MWD 90.00 MWD 90.00 MWD 90.00 MWD 90.00 MWD 90.00 MWD 90.00 MWD 90.00 MWD 90.00 MWD 90.00 MWD 90.00 MWD 90.00 MWD 90.00 3 270.00 MWD 270.00 MWD 270.00 MWD .. --""--'--"'--'--"---"""----"."...----..-....,,--............. """ "'...' ...-. "---"""""""---"""'-----"""-'--""""'-"'-'",-" ---"'-""""""""""""-'------'-""----"-'---'-'-----------__.__n___......-- 270.00 MWD 270.00 MWD ObP c---..------------------- ( f '. BP Amoco Baker Hughes INTEQ Planning Report Bíl8 BAKDt IIUGMIS ------------------- INT EQ - ------------------------------------------- ----- -- -- --_--_m---- ..----- ---------------- - --------------------- --- ---- ---- ---- ---- ----------------------- ------- , Company: BP Amoco Date: 7/10/2001 Time: 17:09:14 Page: 3 i Field: Prudhoe Bay Co-ordinate(NE) Reference: Well: 15-41, True North : : Site: PB DS 15 Vertical (TVD) Reference: System: Mean Sea Level , ---- Well: 15-41 Section (VS) Reference: Well (0.00N,0.00E,150.00Azi) i~_~!~ I!'.~ t h ~------'=! ~~~--~~:!~ ~- -- -- --------- ------- ._-- -m_. - -- - -- ----- ,----- --- --..-- -- - ------- h ------ -- - -- ~~~~!_-~--~~~~~~!~~~...~-~! ~~-~ ~-------~~-~~~-~ - ~~-~t_~~~----------- _.._-~~:_---~ ~~~~ ~---______I Survey -------------------------- ------------------------------~ I MD Incl Azim SSTVD N/S EIW MapN MapE DLS VS TFO Tool! ¡ ft deg deg ft ft ft ft ft deg/10OO ft deg i I,.. - --- - - ---- --------- ---- -- - -- - --------------- - --- -- -- - - - ----- - ---- --- - - ------ ---- - - - -- ---- --- ----- - - - - - -- --- -- ---- ----- -- -- ---- ------ ---- ----------- - - - - - -- ----- -- ------- -- -------- -- ------ --- --- --- -------'" ---------- - -- -- -- -- -- --_m_- ------- - -------- ---------- ---- ------- -..-- ------ -- -- ----- ----- --" - -- -- -- -.. J 11675.00 90.00 163.69 8689.76 4769.33 -613.19 5964775.40 675924.13 10.00 -4436.96 270.00 MWD 11700.00 90.00 161.19 8689.76 4745.50 -605.64 5964751.75 675932.23 10.00 -4412.55 270.00 MWD : I 11725.00 90.00 158.69 8689.76 4722.02 -597.07 5964728.48 675941.36 10.00 -4387.92 270.00 MWD I 11750.00 11775.00 11800.00 11825.00 11850.00 11875.00 11900.00 11925.00 11950.00 11975.00 12000.00 12025.00 12050.00 12075.00 12100.00 12125.00 12150.00 12175.00 12200.00 12225.00 12250.00 12275.00 12278.66 12300.00 12325.00 12350.00 12375.00 12400.00 12425.00 12450.00 12475.00 12500.00 12525.00 12550.00 12575.00 12600.00 12625.00 12650.00 12675.00 12700.00 12725.00 12750.00 12775.00 12778.66 --- ---~------ 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 90.00 156.19 153.69 151.19 148.69 146.19 143.69 141.19 138.69 136.19 133.69 131.19 128.69 126.19 123.69 121.19 118.69 116.19 113.69 111.19 108.69 106.19 103.69 103.32 105.45 107.95 110.45 112.95 115.45 117.95 120.45 122.95 125.45 127.95 130.45 132.95 135.45 137.95 140.45 142.95 145.45 147.95 150.45 152.95 153.32 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 8689.76 4698.94 4676.29 4654.13 4632.50 4611.43 4590.97 4571.15 4552.02 4533.61 4515.95 4499.08 4483.04 4467.84 4453.53 4440.12 4427.64 4416.12 4405.59 4396.04 4387.52 4380.03 4373.59 4372.77 4367.47 4360.28 4352.06 4342.82 4332.57 4321.33 4309.14 4296.00 4281.95 4267.01 4251.20 4234.57 4217.15 4198.95 4180.03 4160.41 4140.13 4119.24 4097.76 4075.75 4072.52 -587.48 -576.89 -565.32 -552.79 -539.34 -524.98 -509.74 -493.65 -476.74 -459.04 -440.59 -421.43 -401.58 -381.08 -359.99 -338.32 -316.14 -293.47 -270.36 -246.86 -223.01 -198.86 -195.26 -174.59 -150.65 -127.04 -103.81 -81 .01 -58.68 -36.86 -15.59 5.08 25.12 44.49 63.16 81.08 98.22 114.55 130.04 144.67 158.39 171.19 183.04 184.71 5964705.63 5964683.24 5964661.36 5964640.03 5964619.28 5964599.17 5964579.72 5964560.97 5964542.96 5964525.73 5964509.30 5964493.71 5964478.98 5964465.15 5964452.25 5964440.28 5964429.29 5964419.29 5964410.30 5964402.33 5964395.40 5964389.53 5964388.79 5964383.98 5964377.36 5964369.69 5964361.00 5964351 .29 5964340.58 5964328.90 5964316.27 5964302.71 5964288.24 5964272.90 5964256.72 5964239.72 5964221.93 5964203.40 5964184.15 5964164.22 5964143.66 5964122.49 5964100.77 5964097.58 675951.49 675962.61 675974.69 675987.72 676001.66 676016.50 676032.20 676048.73 676066.07 676084.18 676103.01 676122.55 676142.75 676163.58 676184.98 676206.93 676229.38 676252.29 676275.61 676299.30 676323.32 676347.62 676351.23 676372.02 676396.13 676419.92 676443.35 676466.39 676488.97 676511.07 676532.64 676553.64 676574.03 676593.76 676612.81 676631.13 676648.70 676665.47 676681 .42 676696.51 676710.72 676724.02 676736.38 676738.13 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 -4363.13 -4338.23 -4313.25 -4288.26 -4263.28 -4238.38 -4213.60 -4188.99 -4164.59 -4140.45 -4116.62 -4093.14 -4070.05 -4047.41 -4025.25 -4003.61 -3982.54 -3962.08 -3942.27 -3923.14 -3904.72 -3887.07 -3884.56 -3869.63 -3851.44 -3832.51 -3812.90 -3792.62 -3771.73 -3750.25 -3728.24 -3705.73 -3682.77 -3659.40 -3635.67 -3611.62 -3587.29 -3562.73 -3538.00 -3513.13 10.00 10.00 10.00 10.00 -3488.17 -3463.17 -3438.19 -3434.55 270.00 MWD 270.00 MWD 270.00 MWD 270.00 MWD 270.00 MWD 270.00 MWD 270.00 MWD 270.00 MWD 270.00 MWD 270.00 MWD 270.00 MWD 270.00 MWD 270.00 MWD 270.00 MWD 270.00 MWD 270.00 MWD 270.00 MWD 270.00 MWD 270.00 MWD 270.00 MWD 270.00 MWD 270.00 MWD 270.00 4 90.00 MWD 90.00 MWD 90.00 MWD 90.00 MWD 90.00 MWD 90.00 MWD 90.00 MWD 90.00 MWD 90.00 MWD 90.00 MWD 90.00 MWD 90.00 MWD 90.00 MWD 90.00 MWD 90.00 MWD 90.00 MWD 90.00 MWD 90.00 MWD 90.00 MWD 90.00 MWD 90.00 TD --------- --- -- - - --------- ---- - ----------- -- - ---- ---- --.. - -- -- -- --- - - -- -- -.. -- --- - -- - --- - -- -- ------- -- --- ---------- ----- BP Amoco WELLPATH DETAILS PI..a 15-41. 500282241202 Pa.... Wollpath, Tio - MD, 15-41 10710.oa RIa' Ref. Da""" V.soctloa bllo 51,41 712%11184 aula ...2511 O.'I1I!; 0.00 ~~ :::::--rto 0.00 150.00' 0.00 REFERENCE INFORMATION Co-ordinate (NÆ) Reference: Well Centre: 15-41, True North Vertical (TVD) Reference: System: Mean Sea Level Section (VS) Reference: Slot - 41 (O.DON,O.DOE) Measured Depth Reference: 58: 41 712211994 00:00 66.25 Calculation Method: Minimum Curvature IECTJOH DETAILS I,e MD Ine AzI TVD .N14 ..,... DLoI TFon Vkc T...ot 1 1061...3 1D.46 D.15 '3&6.34 5017.Z5 -1011.22 D.DD D.DO -5...... 2 1D71D.DD 11.11 D.33 1477.7' 543s.13 -101'.14 ,..0 1.74 -52'8.03 3 11D3s... OD". 12...5 ......... 5342.23 -848.53 3O.DD 128.00 -5050.77 4 1117.... OD.DD 143.32 .....70 5238.03 .7...25 1D.DD ".DO """.67 5 1152"" OD.DD "0.32 0""70 4913.46 -.D1 1D.DD OO.DD -4573.21 0 1227.... OO.DD 103.32 0"8.70 4372.77 -185.20 1D.DD 27D.DD -3660U6 7 1277...0 OD.DD 153.32 0..8.70 407"'2 164.71 1D.DD 00.00 -3434.55 ANNOTATiONS TARGET ÐETAI.S 1VO -.s <EJ-W Shop, ""'BT2.1 860000 4"5" ..,,'" "'" ""'BT2.2 860000 <5«1.39 "".11 "'" ""1BT2.3@ID 8600.00 40<3.52 2...« "'" _5100n C æ 5000 0 0 4900 ... - +,,4800 - .c 1:: 4700 0 Z 4600 - - . - .c 4500 . ... :I 0 4400 .. f) TVD MD b..laüo. 831&.34 10.1..83 TIP 8477.78 10710.oa KOP "'0.08 11035.00 1 ""8.7. 11171..' 2 "".71 11521.11 3 "".71 12271." 4 ""'.7" 12771." TO 8150 ¡ i ! J i I i I I j I I , , , i i I I j I I I 4ÆJ. 8200 bp LEGEND 15-41 (15-41) 15-41 (15-41AP61) n~ PIBn#2 15-416 Plan #2 ~ : 15-41 (15-41AP61)1 ' /, I 15-41 (15-41)( V ï I~~' ~i I I I i i i i i I I i \ I I \ I I I \ I \ I \ I I \ \ I \ I I \ \ \ \ \ i \ I \ \ I I \ \ \ \ \ \ \ \ , I \ \ \ \ I \ \ \ i I .1. + fT5416 T2.21 T tl 4 rn ~. Azimuths to True North Magnetic North: 26.69' Magnetic Field Strength: 57500nT Dip Angle: 80.80. Date: 7/10/2001 Model: BGGM2001 +---i 15-41612.11 Ur l .L 5-lliUUJ .ý" 3J .I Plan: Plan #2 (15-41/Plan#215-41B) Created By: Brij Polnis Date: 7/10/2001 Cnn(nt;1 In~orm3I¡oE. D,,':(~. (l¡O71 :.>.n.(¡c,13 E.rn~.ii: 'imj.óo:ni:~X;:.i(jl.Cq.wm 6:¡~"r Hughe~ IN~f.Q' ¡90ìj ;:6ì.ft';CI -~.. cd æl.ii#f1§:4_1I!1 TO' +,' 8250 _8300 C æ 8350 0 II) 8400 - .c 'S. 8450 Q) Q 8500 - 58550 1: Q) 8600' > Q) 8650 2 I- 8700 f ~. : : " ?,. . .,,~. '" 5600, ¡ 15-416)"2.3@TD; . . -2100-2000-1900-1800-1700-1600-1500-1400-1300-1200-1100-1000 -900 -800 -700 -600 -500 -400 -300 -200 -100 West(-)/East(+) [100ft/in] 8750 8800 8850' 5500 5400 5300 5200. 4300 . 4200' 4100 4000m- 3900 0 100 200 500 ~~ 300 400 f3l i TD] " t . I ;-Plan.-z 15-41ßí ;' ¡;5-o\16-T2.3@TD( 8900 .' . .. ":'."."':'.'" .'.' .' . -5300 -5250 -5200 -5150 -51 00 -5050 -5000 -4950 -4900 -4850 -4800 -4750 -4700 -4650 -4600 -4550 -4500 -4450 -4400 -4350 -4300 -4250 -4200 -4150 -4100 -4050 -4000 -3950 -3900 -3850 -3800 -3750 -3700 -3650 -3600 -3550 -3500 -3450 -3400 -3350 Vertical Section at 150.00. [50ft/in] 7/10/2001 5:19 PM .\ (" , 2."CT 10,000 psi Pack-Off Lubricator Blind/Shear 7 1/16" Pi pelS lips (' ... ~" PipelSlips 7 1/16" Pipe/~/;p5 7 1/16- x 5,000 psi .. 31 " d 7«, ... ~" SWAB OR MASTER VALVE H 193316 {' ( (' DATE 07ìÕ6/0i CHECK NO, OOi9:3316 DATE GROSS VENDOR DISCOUNT INVOICE I CREDIT MEMO DESCRIPTION NET 07020i ëKO7020iC PYMT OMMENTS: HANDL NG INST: iOO_OO 100.00 Per it to Drill ee S/H - Terrie Hub le X4628 or Sandra Ste man X4750 ,,5.YJ~ rHE ATTACHED CHECK IS IN PAYMENT FOR ITEMS DESCRIBED ABOVE. .'.' .". ,.' ",. .. ,TOTAL"'" BP EXPLORATION, (ALASKA) INC. P.O. BOX 196612 ANCHORAGE, ALASKA 99519-6612 FIRST NATIONAL BANK OF ASHLAND AN AFFILIATE OF NATIONAL CITY BANK CLEVELAND, OHIO No.H 193316 CONSOLIDATED COMMERCIAL ACCOUNT 56-389 412 00193316 PA'j' ONE HUNDRED & 00/100************************************* US DOLLAR , DATE 97/0'6/01 II AMOUNT . $lOO,OAI To The ORDER Of: ALASKA OIL AND GAS CONSERVATION COMMISSION' 333 WEST 7TH AVENUE SUITE 100 ANCHORAGE NOTVALID AFTER 120 DAYS AK 99501 n " ......'-::-'--. \Lr-iß {J~. III . g :1 :1 ¡. b III I: 0 ~ ¡. 20 :18 ., 5 I: 00 8 ...... ¡. ., III ~ ~~NSMIT AL LETTER CHECK LIJ. CIRCLE APPROPRIATE LETTERIP ARAGRAPHS TO BE INCLUDED IN TRANSMITTAL LETTER WELL NAME flJ /L /5- C¡i 6 CHECK 1 STANDARD LETTER D EVELO PMENT DEVELOPMENT REDRILL / EXPLORATION INJECTION WELL INJECTION WELL REDRILL (If api number last two (2) digits are between 60-69) PILOT HOLE (PH) ,.., ANNULAR DISPOSAL <--J YES ANNULAR DISPOSAL THIS WELL "CLUE" The permit is for a new wellbore segment of existing well . Permit No, API No. Production should continue to be reported as a function of the original API number stated above. In accordance with 20 AAC 25.005(f), all records, data and logs acquired for the pilot hole must be clearly differentiated in both name (name on permit plus PH) and API number (50 -70/80) from records, data and logs acquired for well (name on permit). Annular disposal has not been requested. . . " -"""'--..-.- . "-"-,.-,-,,,, Annular Disposal of drilling wastes will not be approved. . . Annular Disposal of drilling wastes will not be approved. . . DISPOSAL INTO OTHER Please note that an disposal of fluids generated. . . ANNULUS <--J YES + SPACING EXCEPTION Templates are located m drive\jody\templates Enclosed is the approved application for permit to drill the above referenced well. The permit is approved subject to full compliance with 20 AAC 25.055. Approval to perforate and produce is contingent upon issuance of a conservation order approving a spacing exception. (Companv Name) will assume the liability of any protest to the spacing exception that may occur. . t.( WELL PERMIT CHECKLIST COMPANY WELL NAME /ç: t// /5 PROGRAM: exp - dev - redrll a..- serv well bore sag _ann. disposal para req - FIELD & POOL L 7J INIT CLASS -V A ':")/ L- GEOL AREA 89 D UNIT# () / / &, ~() ON/OFF SHORE ADMINISTRATION 1. Permittee attached. . . . . . . . . . . . . . . . . . . . . . . 2. lease number appropriate. .. . . . . . . . . . . . . . . . . N 3. Unique well name and number. .. . . . . . . . . . . . . . . . ' N 4. Well located in a defined pool.. . . . . . . . . . . . . . . . . N 5. Well located proper distance from drilling unit boundary. . . . N 6. Well located proper distance from other wells.. . . . . . . . . ' N 7. Sufficient acreage available' in drilling unit.. . . . . . . . . . . N. 8. If deviated. is wellbore plat included.. . . . . . . . . . . .'. . N 9. Operator only affected party.. . . . . . . . . . . . . . . . . . N 10. Operator has appropriate bond in force. . . . . . . . . . . . . N 11. Permit can be issued without conservation order. . . . . . . . ' N 12. Permit can.be issued without administrative approval.. . . . . N 13. Can permit be approved before 15-day wait.. . . . . . . . . . ) N ~~: ~~~::~:~;~i~~~~e:1I kn~~' US'DWs.' '. '. '. '. '. '. '. '. '. '. ~ ~+- i_- \ ~ 16. CMTvol adequate to circulate on conductor & surfcsg. . . . . Y N \ ,::>-Wt.~CL'O~ ~~'rSV\~ ~<è..\' 17. CMT vol adequate to tie-in long string to surf csg. . . . . . . . N "') 18. CMT will cover all known productive horizons. . . . . . . . . . N 19. Casing designs adequate for C. T. B & permafrost. . . . . . . N \--"- ~ ':- \ 20. Adequate tankage or reserve pit.. . . . . . . . . . . . . . . . N <L.'{..\~ '~~ r\ t ~ ~,t:...'!'..,,)~ ~ ~ 21. If a re-drill. has a 1Q.403 for abandonment been approved. . . N 'sO \ -d-C - :> \' ,,~~~ r\ . 22. Adequate wellbore separation proposed.. . . . . . . . . . . . N ~~c~~ ~~~~~~"t . ~c~ 23. If diverter required. does it meet regulations. . . . . . . . . . N ~ 24. Drilling .fluid program schematic & equip list adequate. . . . . N . D_ATE ~~: ~g~~spr~~~~:~;e:~~~;~~i~~~;nt~sÙ~ . . .. '~Ö' ~sig: ~ \-\~~ ~~~~~ ~~Co ~\ ~/6--C\ . 27. Choke manifold complies w/API RP-53 (May 84). . . . . . . . . N , 28. Work will occur without operation shutdbwn. . . . . . . . . . . .t!-. 29. Is presence of H2S gas probable.. . . . . . . . . . . . . . . . Y Qi) GEOLOGY. 30. Permit can be issued w/o hydrogen sulfide measures. . . . . Y N ~ 31. Data presented on potential overpressure zones. . . . . . . Y . 32. Seismic anal~~is of shallo~ gas zones. . . . . . . . ~. ... A N AP R ..QAT~ 33. Seabed condition survey (If off-shore). . . . . . . . . . .. ..' Y N /./7"(') /34. Contact name/phone for weekly progress reports [expI tory only] Y N NNULAR DISPOSAL35. With proper cementing records. this plan . (A) will contain waste in a suitable receiving zone; . . . . . . . (B) will not contaminate freshwater; or cause drilling waste. .. to surface; .' .' . (C) will not impair mechanical integrity of the well used for disposal; Y N (D) will not damage producing formation or impair recovery from a Y N pool; and . E will not circumvent 20 MC 25.252 or 20 MC 25.412. Y N GEOLOGY: ENGINEERING: UIC/Annular COMMISSION: ~Þ8 ~ f~41 :;.~ -...' . ~~~ (h t APJ?:ß... DATE I ~ 7./9'0 ENGINEERING APPR Y N Y N DATE c:\msoffice\wordian\diana\checklist (rev. 11/01/100) "- '. N-~ o..~~~ " ",-. '-', ., " '-. ...... "". " '--,------- Com ments/lnstructions: / /' /'/' c 0 Z ( 0 -t :E :::0 - -t m - z -t :J: - en :Þ ::u ( m » /' ( :( 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. ( ( (JuJ -I Lj i?J / [) fd. I **** REEL READER **** MWD 02/03/27 BHI 01 LIS Customer Format Tape **** TAPE HEADER **** MWD 02/03/27 208288 01 1.75" NaviGamma - Gamma Ray *** LIS COMMENT RECORD *** ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Remark File Version 1.000 Extract File: ldwg.las -Version Information VERSo WRAP. -Well Information Block #MNEM.UNIT Data Type #--------- ------------- STRT.FT 10611.0000: STOP.FT 11278.0000: STEP.FT 0.5000: NULL. -999.2500: COMPo COMPANY: WELL. WELL: FLD. FIELD: LOC . LOCATION: CNTY. COUNTY: STAT. STATE: SRVC. SERVICE COMPANY: TOOL. TOOL NAME & TYPE: DATE. LOG DATE: API. API NUMBER: -Parameter Information Block #MNEM.UNIT Value #--------- ------------------------- SECT. 22 TOWN.N 11N RANG. 14E PDAT. MSL EPD .F 0 LMF . RKB FAPD.F 66.25 DMF KB EKB .F 66.25 EDF .F N/A EGL .F N/A CASE.F N/A OSl . DIRECTIONAL -Remarks (1) All depths are Measured Depths (MD) unless otherwise noted. (2) All depths are Bit Depths unless otherwise noted. (3) All Gamma Ray data (GRAX) presented is realtime data. (4) Well 15-41BPB1 was kicked off @ 10690' MD (8458' SSTVD) from the wellbore of Well 15-41. (5) Well 15-41BPB1 was drilled to TD at 11278' MD (8681' SSTVD) on Run 10. (6) The interval from 11258' MD (8683' SSTVD) to 11278' MD (8681' SSTVD) was not logged due to sensor to bit offset. (7) The data presented here is final and has been depth shifted to a PDC (Primary Depth Control) supplied by BPX (SWS, 08-0ct-2001). 1.20: NO: CWLS log ASCII Standard -VERSION 1.20 One line per frame Information ------------------------------- Starting Depth Ending Depth Level Spacing Absent Value BP Exploration, Inc. 15-41BPB1 Prudhoe Bay Unit 1474' SNL, 4566' FEL North Slope Alaska Baker Hughes INTEQ 1.75" NaviGamma - Gamma Ray 28-Sep-01 500292249271 Description ------------------------------- Section Township Range Permanent Datum Elevation Of Perm. Datum Log Measured from Feet Above Perm. Datum Drilling Measured From Elevation of Kelly Bushing Elevation of Derrick Floor Elevation of Ground Level Casing Depth Other Services Line 1 ( 'I' ~ (8) A Magnetic Declination correction of 26.59 degrees has been applied to the Directional Surveys. MNEMONICS: GRAX -> Gamma Ray MWD-API [MWD] (MWD-API units) ROPS -> Rate of Penetration, feet/hour TVD -> Subsea True Vertical Depth, feet SENSOR OFFSETS: RUN 1 2 3 4 5 6 7 8 9 10 G AMMA 19.20 ft. 19.20 it. 19.61 it. 20.26 ft. 20.26 it. 19.38 it. 19.42 it. 19.42 it. 19.42 it. 19.42 ft. CURVE SHIFT DATA DIRECTIONAL 24.20 it. 24.20 it. 24.61 ft. 25.26 it. 25.26 ft. 24.38 ft. 24.42 it. 24.42 ft. 24.42 ft. 24.42 ft. DISPLACEMENT 1. 61621 1.41406 BASELINE, 10625.7, 10646.7, EOZ END ! BASE CURVE: GROH, OFFSET CURVE: GRAX MEASURED, 10627.3, 10648.1, Tape Subfile: 1 Minimum record length: Maximum record length: **** FILE HEADER **** MWD .001 1024 76 records... 10 bytes 13 2 bytes *** INFORMATION TABLE: CONS MNEM VALU ----------- ----------------- WDFN LCC CN Ï^1N FN COUN STAT mwd.xtf 150 BP Exploration, Inc. 15-41BPB1 Prudhoe Bay Unit North Slope Alaska *** LIS COMMENT RECORD *** !!!!!!!!!!!!!!!!!!! Remark File Version 1.000 1. The data presented has been edited from the field raw data. 2. The data has been depth shifted to match the PDC supplied by BPX 3. The PDC used is a Schlumberger Gamma Ray dated 08-0ct-01. *** INFORMATION TABLE: CIFO MNEM CHAN DIMT CNAM ODEP GR ROP GR ROP ---------------------------------------------------- GRAX10 ROPS10 0.0 0.0 * FORMAT RECORD (TYPE# 64) ( (' Data record type is: 0 Datum Frame Size is: 12 bytes Logging direction is down (value= 255) Optical Log Depth Scale Units: Feet Frame spacing: 0.250000 Frame spacing units: [F ] Number of frames per record is: One depth per frame (value= 0) Datum Specification Block Sub-type is: 84 1 FRAME SPACE = 0.250 * F ONE DEPTH PER FRAME Tape depth ID: F 2 Curves: Name Tool Code Samples Units Size Length 1 2 GR ROP MWD MWD 68 68 1 1 API F/HR 4 4 4 4 ------- 8 Total Data Records: 32 Tape File Start Depth = 10611.000000 Tape File End Depth = 11278.000000 Tape File Level Spacing = 0.250000 Tape File Depth Units = feet **** FILE TRAILER **** Tape Subfile: 2 41 records... Minimum record length: Maximum record length: 54 bytes 4124 bytes **** FILE HEADER **** MWD .002 1024 *** INFORMATION TABLE: CONS MNEM VALU ---------------------------- WDFN LCC CN WN FN COUN STAT mwd.xtf 150 BP Exploration, Inc. 15-41BPB1 Prudhoe Bay Unit North Slope Alaska *** LIS COMMENT RECORD *** !!!!!!!!!!!!!!!!!!! Remark File Version 1.000 The data presented here is the unedited field raw data. *** INFORMATION TABLE: CIFO MNEM CHAN DIMT CNAM ODEP ---------------------------------------------------- GRAX GRAX GRAX 0.0 ~. ROPS ROPS 0.0 ROPS * FORMAT RECORD (TYPE# 64) Data record type is: 0 Datum Frame Size is: 12 bytes Logging direction is down (value= 255) Optical Log Depth Scale Units: Feet Frame spacing: 0.250000 Frame spacing units: [F ] Number of frames per record is: One depth per frame (value= 0) Datum Specification Block Sub-type is: 84 FRAME SPACE = 0.250 * F ONE DEPTH PER FRAME Tape depth ID: F 2 Curves: Name Tool Code Samples Units 1 2 68 68 API F/HR 1 1 GRAX ROPS MWD MWD Total Data Records: 32 Tape File Start Depth = 10611.000000 Tape File End Depth = 11278.000000 Tape File Level Spacing = 0.250000 Tape File Depth Units = feet **** FILE TRAILER **** Tape Subfile: 3 41 records... Minimum record length: Maximum record length: 54 bytes 4124 bytes **** TAPE TRAILER **** MWD 02/03/27 208288 01 **** REEL TRAILER **** MWD 02/03/27 BHI 01 Tape Subfile: 4 2 records... Minimum recúrd length: Maximum record length: 13 2 bytes 13 2 bytes Tape Subfile 1 is type: LIS Tape Subfile 2 is type: LIS ( 1 Size Length 4 4 4 4 ------- 8 ( (' DEPTH GR ROP 10611.0000 -999.2500 -999.2500 10611.2500 -999.2500 -999.2500 10700.0000 17.4917 12.2419 10800.0000 18.9206 17.4863 10900.0000 104.1985 25.8769 11000.0000 15.6337 61.0171 11100.0000 25.1439 93.0221 11200.0000 19.6593 39.7422 11278.0000 -999.2500 67.2902 Tape File Start Depth = 10611.000000 Tape File End Depth = 11278.000000 Tape File Level Spacing = 0.250000 Tape File Depth Units = feet Tape Subfile 3 is type: LIS DEPTH GRAX ROPS 10611.0000 12.9160 -999.2500 10611.2500 12.2450 -999.2500 10700.0000 16.1410 9.1730 10800.0000 18.6870 20.6050 10900.0000 87.8000 26.3440 11000.0000 16.4800 63.3100 11100.0000 24.7310 93.5720 11200.0000 21.5020 53.1060 11278.0000 -999.2500 -999.2500 Tape File Start Depth 10611.000000 Tape File End Depth = 11278.000000 Tape File Level Spacing = 0.250000 Tape File Depth Units = feet Tape Subfile 4 is type: LIS ( ( ( clOJ-I'-! ~ !ù71o0 **** REEL HEADER **** MWD 02/03/27 BHI 01 LIS Customer Format Tape **** TAPE HEADER **** MWD 02/03/26 208288 01 1.75" NaviGamma - Gamma Ray *** US COMMENT RECORD *** flIrt!!!!!!!!!!!!!! Remark File Version 1.000 II! !!!!!!!!!!!!!!!! Extract File: Idwg.las -Version Information VERSo 1.20: CWLS log ASCII Standard -VERSION 1.20 WRAP. NO: One line per frame -Well Information Block #MNEM.UNIT Data Type Information #--------- ------------- ------------------------------- STRT.FT 10600.0000: Starting Depth STOP.FT 12777.0000: Ending Depth STEP.FT 0.5000: Level Spacing NULL. -999.2500: Absent Value COMPo COMPANY: BP Exploration, Inc. WELL. WELL: 15-41B FLD . FIELD: Prudhoe Bay Unit LOC. LOCATION: 1474' SNL, 4566' FEL CNTY. COUNTY: North Slope STAT. STATE: Alaska SRVC. SERVICE COMPANY: Baker Hughes INTEQ TOOL. TOOL NAME & TYPE: 1.75" NaviGamma - Gamma Ray DATE. LOG DATE: 06-0ct-01 API . API NUMBER: 500292249202 -Parameter Information Block #MNEM.UNIT Value Description # --------- ------------------------- ------------------------------- SECT. 22 : Section TOWN.N IIN : Township RANG. 14E : Range PDAT. MSL : Permanent Datum EPD .F 0 : Elevation Of Perm. Datum LMF . RKB : Log Measured from FAPD.F 66.25 : Feet Above Perm. Datum DMF . KB : Drilling Measured From EKB .F 66.25 : Elevation of Kelly Bushing EDF .F NIA : Elevation of Derrick Floor EGL .F NI A : Elevation of Ground Level CASE.F NI A : Casing Depth OS 1 . DIRECTIONAL : Other Services Line 1 -Remarks (1) All depths are Measured Depths (MD) unless otherwise noted. (2) All depths are Bit Depths unless otherwise noted. (3) All Gamma Ray data (GRAX) presented is realtime data. (4) Well 15-41B was kicked off@ 10705' MD (8473' SSTVD) from the wellbore of Well 15-41. (" ( (5) Well 15-41B was drilled to TO at 12777' MD (8734' SSTVD) on Run 21. (6) The interval from 12763' MD (8733' SSTVD) to TO was not logged due to sensor to bit offset. (7) The data presented here is final and has been depth shifted to a PDC (Primary Depth Control) supplied by BPX (SWS, 08-0ct-200 1). (8) A Magnetic Declination correction of26.69 degrees has been applied to the Directional Surveys. MNEMONICS: GRAX -> Gamma Ray MWD-API [MWD] (MWD-API units) ROPS -> Rate of Penetration, feet/hour TVD -> Subsea True Vertical Depth, feet SENSOR OFFSETS: RUN GAMMA DIRECTIONAL NIA N/A N/A CURVE SHIFT DATA BASELINE, MEASURED, DISPLACEMENT 10609.3, 10608.9, ! -0.40332 10648.5, 10648.5, ! 0 10745.6, 10750.4, ! 4.84863 10756.9, 10763.1, ! 6.2627 10782.5, 10790.0, ! 7.47461 10857.2, 10861.0, ! 3.83887 10890.5, 10894.9, ! 4.44531 10901.6, 10906.1, ! 4.44434 10939.6, 10942.2, ! 2.62598 10995.6, 10992.6, ! -3.03027 11013.7, 11009.1, ! -4.64648 11035.4, 11030.7, ! -4.64648 11100.3, 11094.8, ! -5.45508 11187.8,11179.5, ! -8.2832 11233.2, 11232.2, ! -1.00977 11672.2, 11658.1, ! -14.1416 11703.1,11688.8, ! -14.3438 11730.0, 11715.7, ! -14.3428 11793.1,11782.8, ! -10.3027 11873.8, 11863.9, ! -9.89941 11963.4, 11954.9, ! -8.48535 12038.6, 12036.0, ! -2.62598 12092.7, 12090.5, ! -2.22168 12291.9, 12308.1, ! 16.1621 12350.0,12361.1, ! 11.1104 12356.9, 12366.2, ! 9.29297 12364.1, 12378.3, ! 14.1416 12439.7, 12448.8, ! 9.09082 12519.8, 12528.7, ! 8.88965 12596.1, 12606.2, ! 10.1006 12619.6, 12627.1, ! 7.47461 12692.7, 12699.4, ! 6.66699 EOZ END ! BASE CURVE: GROH, OFFSET CURVE: GRAX Tape Subfile: 1 97 records... Minimum record length: Maximum record length: 10 bytes 132 bytes **** FILE HEADER **** MWD .001 1024 ( ( *** INFORMATION TABLE: CONS MNEM V ALU --------------- ---- -------- WDFN mwd.xtf LCC 150 CN BP Exploration, Inc. WN I5-41B FN Prudhoe Bay Unit COUN North Slope STAT Alaska *** LIS COMMENT RECORD *** I!!!!!!!!!!!!!!!!!! Remark File Version 1.000 1. The data presented has been edited from the field raw data. 2. The data has been depth shifted to match the PDC supplied by BPX 3. The PDC used is a Schlumberger Gamma Ray dated 08-0ct-0 1. *** INFORMATION TABLE: CIFO MNEM CHAN DIMT CNAM ODEP ----------------- ----------- -- ------- ---------- -- --- GR GR ROP ROP GRAXI9 ROPS 19 0.0 0.0 * FORMAT RECORD (TYPE# 64) Data record type is: 0 Datum Frame Size is: 12 bytes Logging direction is down (value= 255) Optical Log Depth Scale Units: Feet Frame spacing: 0.500000 Frame spacing units: [F ] Number of frames per record is: 84 One depth per frame (value= 0) Datum Specification Block Sub-type is: FRAME SPACE = 0.500 * F ONE DEPTH PER FRAME Tape depth 10: F 2 Curves: Name Tool Code Samples Units Size Length 1 GR MWD 68 1 API 4 4 2 ROP MWD 68 1 FIHR 4 4 8 Total Data Records: 52 Tape File Start Depth = 10600.000000 Tape File End Depth = 12777.000000 Tape File Level Spacing = 0.500000 Tape File Depth Units = feet **** FILE TRAILER **** Tape Subfile: 2 61 records... Minimum record length: 54 bytes Maximum record length: 4124 bytes ( ( **** FILE HEADER **** MWD .002 1024 *** INFORMATION TABLE: CONS MNEM V ALU ---------------------------- WDFN mwd.xtf LCC 150 CN BP Exploration, Inc. WN 15-4lB FN Prudhoe Bay Unit COUN North Slope STAT Alaska *** LIS COMMENT RECORD *** I!!!!!!!!!!!!!!!!!! Remark File Version 1.000 The data presented here is the unedited field raw data. * * * INFORMATION TABLE: CIFO MNEM CHAN DIMT CNAM ODEP --------- ---- --------------------- --------- --------- GRAX GRAX ROPS ROPS GRAX ROPS 0.0 0.0 * FORMAT RECORD (TYPE# 64) Data record type is: 0 Datum Frame Size is: 12 bytes Logging direction is down (value= 255) Optical Log Depth Scale Units: Feet Frame spacing: 0.500000 Frame spacing units: [F ] Number of frames per record is: 84 One depth per frame (value= 0) Datum Specification Block Sub-type is: FRAME SPACE = 0.500 * F ONE DEPTH PER FRAME Tape depth ill: F 2 Curves: Name Tool Code Samples Units Size Length 1 GRAX MWD 68 1 API 4 4 2 ROPS MWD 68 1 FIHR 4 4 8 Total Data Records: 52 Tape File Start Depth = 10600.000000 Tape File End Depth = 12777.000000 Tape File Level Spacing = 0.500000 Tape File Depth Units = feet ( (' Tape Subfile: 3 **** FILE TRAILER **** 61 records... Minimum record length: 54 bytes Maximum record length: 4124 bytes **** TAPE TRAILER **** MWD 02/03/26 208288 01 **** REEL TRAILER **** MWD 02/03/27 BID 01 Tape Subfile: 4 2 records... Minimum record length: 132 bytes Maximum record length: 132 bytes Tape Subfile I is type: LIS Tape Subfile 2 is type: LIS DEPTH 10600.0000 10600.5000 10700.0000 10800.0000 10900.0000 11000.0000 11100.0000 11200.0000 11300.0000 11400.0000 11500.0000 11600.0000 11700.0000 11800.0000 11900.0000 12000.0000 12100.0000 12200.0000 12300.0000 12400.0000 12500.0000 12600.0000 12700.0000 12777.0000 GR ROP -999.2500 -999.2500 -999.2500 -999.2500 13.5355 36.0160 17.3110 19.7038 37.0590 39.3791 29.8758 42.0819 31.3763 76.3997 27.6809 79.5971 19.7067 56.6944 20.9166 70.7735 20.5910 18.7120 31.5858 81.6445 20.2333 61.0275 75.0663 85.9997 36.4227 74.2584 78.3549 69.5326 47.7471 76.6965 56.8806 116.5229 64.2673 118.1525 62.4156 173.4116 37.8244 183.7744 34.5417 553.1073 53.6539 177.7212 -999.2500 134.2179 Tape File Start Depth = 10600.000000 Tape File End Depth = 12777.000000 Tape File Level Spacing = 0.500000 ( ( , Tape File Depth Units = feet Tape Subfile 3 is type: LIS DEPTH GRAX ROPS 10600.0000 -999.2500 -999.2500 10600.5000 -999.2500 -999.2500 10700.0000 13.8660 35.3820 10800.0000 12.7460 17.6880 10900.0000 52.1240 30.7000 11000.0000 27.3430 33.0930 11100.0000 37.6590 67.8950 11200.0000 30.3140 71.7190 11300.0000 18.0080 68.0960 11400.0000 19.8830 86.7300 11500.0000 22.2510 30.5030 11600.0000 23.4390 75.8240 11700.0000 31.4170 62.2660 11800.0000 40.1250 77.4480 11900.0000 29.0410 78.5480 12000.0000 77.9300 68.0030 12100.0000 55.8590 132.4290 12200.0000 58.2350 101.6390 12300.0000 52.3400 154.3160 12400.0000 51.2760 163.8330 12500.0000 33.3970 122.7740 12600.0000 34.2070 213.8690 12700.0000 29.7220 259.8710 12777.0000 -999.2500 -999.2500 Tape File Start Depth = 10600.000000 Tape File End Depth = 12777.000000 Tape File Level Spacing = 0.500000 Tape File Depth Units = feet Tape Subfile 4 is type: LIS