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Home My WebLink About205-203 Post Office Box 244027 Anchorage, AK 99524-4027 3800 Centerpoint Drive Suite 1400 Anchorage, AK 99503 Phone: (907) 564-4891 06/01/2023 Mr. Mel Rixse Alaska Oil and Gas Conservation Commission 333 West 7th Avenue, Suite 100 Anchorage, Alaska 99501 Re: Prudhoe Bay Surface Casing by Conductor Annulus Top-offs of Cement, Corrosion Inhibitor through 6/1/2023. Dear Mr. Rixse, Enclosed please find a copy of a spreadsheet with a list of Prudhoe Bay wells that were topped-off with cement, corrosion inhibitor in the surface casing by conductor annulus through 6/1/2023. Cement top-offs are executed as needed to mitigate the void space left at surface by minor cement fallback during the primary surface casing by conductor cement job. The remaining void space between the top of the cement and the top of the conductor is filled with a heavier than water corrosion inhibitor to reduce the risk of external surface casing corrosion. The attached spreadsheets include the well names, API and PTD numbers, treatment dates and volumes. 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 have any additional questions, please contact me at 564-4891 or oliver.sternicki@hilcorp.com. Sincerely, Oliver Sternicki Well Integrity Supervisor Hilcorp North Slope, LLC Hilcorp North Slope LLC.Surface Casing by Conductor Annulus Cement, Corrosion Inhibitor Top-offReport of Sundry Operations (10-404)06/01/2023Well NamePTD #API #Initial top of cement (ft)Vol. of cement pumped (gal)Final top of cement (ft)Cement top off date Corrosion inhibitor (gal)Corrosion inhibitor/ sealant dateL-2072210815002923702003.371.31/23/2023123/1/2023L-2312230105002923746003.003.0-393/27/2023M-111810575002920589002.602.6-105/29/2023M-311920325002922256001.501.5-165/29/2023M-331941165002922504001.301.3-145/29/2023N-171830095002920898001.201.2-115/30/2023N-18A2081755002920906010.500.5-65/30/2023N-21A1961965002921342011.001.0-85/30/2023N-272071045002923365000.500.5-45/30/2023N-292141105002923521002.302.3-245/30/2023N-31215175500292356000-0--205/30/2023V-2342220045002923707006.3210.91/23/2023243/1/2023W-2412221545002923741002.502.5-263/1/2023Z-121891025002921977000.700.7-45/23/2023Z-34212061500292346900-0--155/27/2023Z-402111735002923462000.700.7-65/27/2023Z-46A2052035002923280010.500.5-35/23/2023Z-502120015002923463000.500.5-35/27/2023Z-662121955002923482000.700.7-85/27/2023Z-116211124500292345500-0--175/27/2023Z-210204181500292322600-0--125/27/2023Z-2292221045002923726003.8361.23/5/2023363/27/20230.500.5-Z-46A20520350029232800135/23/2023 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:Regg, James B (OGC) To:AOGCC Records (CED sponsored) Subject:FW: UNDER EVALUATION: Producer Z-46A (PTD #2052030) IA over MOASP, failed TIFL Date:Tuesday, September 27, 2022 11:29:40 AM Attachments:image002.png Jim Regg Supervisor, Inspections AOGCC 333 W. 7th Ave, Suite 100 Anchorage, AK 99501 907-793-1236 From: PB Wells Integrity <PBWellsIntegrity@hilcorp.com> Sent: Tuesday, September 27, 2022 11:28 AM To: Regg, James B (OGC) <jim.regg@alaska.gov> Cc: Wallace, Chris D (OGC) <chris.wallace@alaska.gov>; Oliver Sternicki <Oliver.Sternicki@hilcorp.com>; Stan Golis <sgolis@hilcorp.com>; PB Wells Integrity <PBWellsIntegrity@hilcorp.com> Subject: UNDER EVALUATION: Producer Z-46A (PTD #2052030) IA over MOASP, failed TIFL Mr. Regg, Producer Z-46A (PTD #2052030) was reported to have IA casing pressure over MOASP on 09/25/22. DHD performed a failing warm TIFL on 09/27/22 which indicates a failure in a well barrier. The well is now classified as UNDER EVALUATION and is on the 28-day clock for diagnostics. Plan Forward: 1. Slickline: Replace GLVs 2. DHD: TIFL 3. 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 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, please immediately notify us by return email or telephone if the sender's phone numberis listed above, then promptly and permanently delete this 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 onward transmission, opening, or use of this message and any attachments will not adversely affect its systems or data. No responsibility is accepted by the company in this regard and the recipient should carry out such virus and other checks as it considers appropriate. STATE OF ALASKA RECEIVED ALASKA OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS 1. Operations Performed DEC 18 Abandon ❑ Plug Perforations ❑ Fracture Stimulate ❑ Pull Tubing ❑ Opefatio s tlgleLn ^ ❑ Suspend ❑ Perforate 71 Other Stimulate ❑ Alter Casing ❑ Ch (4Pl'df9li-m ❑ Plug for Rednll ❑ Perforate New Pool ❑ Repair Well ❑ Re-enter Susp Well ❑ Other: ❑ 2. Operator Name: BP Exploration (Alaska), Inc 4. Well Class Before Work Development 0 Exploratory ❑ 5. Permit to Drill Number: 205-203 3. Address: P.O. Box 196612 Anchorage, AK 99 51 9-6 61 2 Stratigraphic ❑ Service ❑ 6API Number: 50-029-23280-01-00 7 Property Designation (Lease Number): ADL 028262 & 047453 8. Well Name and Number: PBU Z -46A 9. Logs (List logs and submit electronic and printed data per 20AAC25.071): 10. Field/Pools: PRUDHOE BAY, PRUDHOE OIL 11. Present Well Condition Summary: Total Depth: measured 16721 feet Plugs measured None feet true vertical 8913 feet Junk measured None feel Effective Depth: measured 15632 feet Packer measured 11784 feet true vertical 8924 feet Packer true vertical 8556 feet Casing: Length: Size: MD: TVD: Buret: Collapse: Structural Conductor 80 20" 29-109 29-109 1530 520 Surface 4447 10-3/4" 28-4475 28-2887 Intermediate 11980 7-5/8" 26-12006 26-8713 6890 4790 Production Liner 4880 4-1/2" 11839 - 16719 8595-8914 8430 7500 Perforation Depth: Measured depth: 12028 -16630 feet True vertical depth: 8729-8994 feet Tubing (size, grade, measured and true vertical depth) 4-1/2" 12.6# x 3-1/2' 9.2#, 13Cr80 24-11845 24-8599 Packers and SSSV (type, measured and 4-1/2' Baker S-3 Packer 11784 8556 true vertical depth) No SSSV Installed 12. Stimulation or cement squeeze summary: Intervals treated (measured): Treatment descriptions including volumes used and final pressure: 13. Representative Daily Average Production or Injection Data Oil -Bbl Gas-Mcf Water -Bbl Casing Pressure Tubing Pressure Prior to well operation: 64 0 212 1424 246 Subsequent to operation: 183 118 644 1315 297 14. Attachments (Mgwmd per err nac 25.007 25071,&25.2W) 15, Well Class after work: Daily Report of Well Operations 10 Exploratory ❑ Development 21 Service ❑ Stratigraphic ❑ Copies of Logs and Surveys Run ❑ 16. Well Status after work: Oil 0 Gas ❑ WDSPL ❑ Printed and Electronic Fracture Stimulation Data ❑ I 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, 0. Exempt: NIA Authorized Name: Youngmun, Alex Contact Name: Youngmun, Alex Authorized Title: Kuparuk & Schrader Bluff PE Contact Email: younak013P.com Authorized Signature: C Date: f2f (al Q Contact Phone: +1 907 564 4864 1 Farm 10-404 Revised 04/2017 ��/y %q /p ��!'O!`/ MG!?,ZSDC'C19' 'MMS'�" DEC 19 2019 Submit Original Only Daily Report of Well Operations PBU Z -46A ACTI VIT V r1ATF m uAAA A ov CTU#9 1.75" CT. Job Scope: Hydrate Plug/ Adperf MIRU CTU. MU Ice Plug Nozzle. Pressure Test Lubricator. 11/27/2019 ***In Progress*** CTU#9 1.75" CT. Job Scope: Hydrate Plug/ Adperf RIH w/ 1.75" DJN ( ice plug nozzle). Tag Hydrate Plug at 817'. Jet hydrates down to 3025' ( 2175' tvd) and break through. Able to inject into formation at 2.24bpm at-1250psi. Drift clean down to 4000'. Pooh. Change Packoffs and trim coil. Bleed IA and FP flowline. MU & RIH w/ HES 2-3/8" Logging Carrier & 2.80" DJN. Bullhead 175 bbls KCL w/ Safelube. 11/28/2019 ***In Progress*** CTU#9 1.75" CT. Job Scope: Hydrate Plug / Adperf Continue RIH w/ Logging BHA. Tag PBTD at 16608' down / 16598' up. Log from compression up to 10950'. Flagged Pipe at 13330'. Pooh. Determine +36' correction. PT MHA and standby for Slb TCP availability. 11/29/2019 ***In Progress*** CTU#9 1.75" CT. Job Scope: Hydrate Plug/ Adperf Make up perf gun #1 with 20'x 2.5" Powerjet Omega, 6 spf pert gun. RIH and tie into flag. Perforate 13367-13387'. POOH. Make up perf gun #2 with 12'x 2.5" Powerjet Omega, 6 spf pert gun. —R—IFT— and tie into flag. Perforate Interval 13355' - 13367'. Pooh. 11/30/2019 ***In Progress**.- CTU#9 1.75" CT. Job Scope: Hydrate Plug/ Adperf Continue Pooh w/ Perf Gun #2. All shots fired, ball recovered. MU & RIH w/ Sib 2.50" x 20' PJO Perf Gun #3. Correct depth at flag. Perforate Interval 12028' - 12048'. Pooh. Freeze Protect Tbg w/ 32 bbls 60/40 Methanol. Pump corrosion inhibitor and blow down long string. Rig Down CTU. 12/1/2019 ***Job Com lete*** TRFF= d-1/1RSM r:Mf WELLHEAD= FMC GEN5 ACTUATOR= NTERVAL OKB. ELEV = 82.8' BF. ELEV = 56.69' KOP = 4750' Max Anglee = 96° 0 15202' _ Dahm MD = 12641' Datum TVD = 8800' SS 4-112' TBG, 12.6#, 13CR TCII, 66' .0152 bpf, ID = 3.958' TOPOFCBVENT(12118/05) 423A' 10-3/4' CSG, 45.5#, L-80 BTC, D = 9.950' 4475' KICKOFF CMT PLUG —F"--7-5'---4496- Minimum ID = 2.813" @ 2676' 3-1/2" HES X NIPPLE TBG, 9.2#, 13CR VAM TOP, bpf, D = 2.992" PERFORATION SUMMARY REF LOG: SLB MWD/GR ON 12/15/05 ANGLE AT TOP PERF: 47' @ 12028' Note: Refer t0 Production OB for Nslorical perfdata SEE SPF NTERVAL NS z SHOT SOZ 2-12' 6 12028 -12048 O 12/01/19 MMG 2' 6 12664 -12679 O 03,28/11 5366 2' 6 12710 -12730 O 0328/11 16 2-12' 6 13355 -13387 O 11/30/19 MMG 2' 6 13580-13600 O 0328/11 7594 2- 6 13800-13820 O 0328/11 16 2- 6 13880 -13900 O 03/28/11 MMG 2- 6 13960 -13980 O 0328/11 9805 2' 6 14040 -14060 O 0328111 16 2' 6 14390-l"10 O 0328/11 MMG 2' 6 14455-14475 O 0328/11 2' 6 14710 -14730 O 0328/11 2-12' 4 15600 -16380 O 01107/06 2-12' 4 16500 -16630 O 01107/06 17-5/8' CSG, 29.7#, L-80 BTC -K D = 6.875' I bpf, D = 3.958" LNR—WELOLANGLE> 700@ 12142' TBG 8 4-112" Z -46A 4-1/2' x 3-12" XO, D = 3.062" I 2.813' GAS LFT MIAN 41S ST MD TVD DEV TYPE VLV LATCH PORE DATE 7 3671 2496 62 MMG DMY RK 0 06/15/06 6 5366 3513 36 MMG DOME RK 16 1024/14 5 6465 4395 37 MMG DMY RK 0 06/15/06 4 7594 5299 36 MMG DOME RK 16 1024/14 3 8682 6184 34 MMG DOME RK 16 1024/14 2 9805 7087 39 MMC DOME RK 16 1024/14 1 11022 8004 44 MMG SO RK 20 1024/14 7-5/8" ES CEMENTER 3-12" HES X NP, D = 2.813- 11730' 11312' HES SYMPHONY PLUS GAUGE CARRIER w/CABLE TO SURFACE N b 11787 —j3-12" X 4-12" XO, D = 2.960' 11784' 7-5/8' X 4-12' BKR S3 PKR, D = 11788' 1181W 4-12' X 3-12" XO, D = 2.960" 3-1/2-HESXNP,D=2.813' 11830' J—j 3-12" HES X NP, D = 2.813" 11839' 7-5/8" X 5' BKR ZXP LNR TOP PKR w/TIEBACK SLV (PBR), D=4.830' 11841' 3-12" X 4-12" XO, D = 2962- 11845- 4-12" WLEG, D = 3.985" T3MD TT NOT LOGGED 1185F 1-17-5/8-X5'BKRHMCLNRHNGR,D=4.830" 11� 5- X 4-12' XO. D = 3.980' DATE REV BY COMMENTS DATE REV BY COMMENTS 01/09106 WES ORIGINAL COMPLETION Z46A) 10/19114 GJF/PJC DMYGLVS 0127106 RWL/TLH DRLG DRAFT CORRECTIONS 1024/14 STF/PJC GLV C/O 02/19/06 KSB/TLH GLV C/O 11/03/14 PJC REFORMAT WBS 06/14/06 JRP/PJC GLV C/O 12/18/19 JCF/JMD ADPERFS 02/10/07 JCM/PAG GLV C/O 02/03/07 12M 8/19 DD/JMD ADDED OKB 8 BF ELEVS 03/31/11 RD/PJ ADPERFS(0328111) ML -q-11111111 PRUDHOE BAY UNIT WELL: Z46A PERMIT No: '2052030 API No: 50-029-23280-01 I, T11 N, R12E, 983' FNL, 2940' BP Exploration (Alaska) STATE OF ALASKA ALASKA AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS 1. Operations Abandon ❑ Repair Well ❑ Plug Perforations ❑ Stimulate El Other 0 ACID Performed: Alter Casing ❑ Pull Tubing ❑ Perforate New Pool ❑ Waiver❑ Time Extension ❑ Change Approved Program ❑ Operat. Shutdown ❑ Perforate igi Re -enter Suspended Well ❑ 2. Operator BP Exploration (Alaska), Inc. 4. Well Class Before Work: 5. Permit to Drill Number: Name: Development 0 Exploratory ❑ 205 -2030 3. Address: P.O. Box 196612 Stratigraphic❑ Service ❑ 6. API Number: Anchorage, AK 99519 -6612 *50-029-23280-01-00 8. Property Designation (Lease Number) : 9. Well Name and Number: • ADLO- 028248 .. PBU Z -46A 10. Field /Pool(s): V. PRUDHOE BAY FIELD / PRUDHOE OIL POOL 11. Present Well Condition Summary: Total Depth measured 16721 feet Plugs (measured) None feet true vertical 8913.37 feet Junk (measured) None feet Effective Depth measured 16632 feet Packer (measured) 11784 11839 feet true vertical 8924.05 feet (true vertical) 8556 8595 feet Casing Length Size MD TVD Burst Collapse Structural Conductor 20" 94# H-40 29 - 109 29 - 109 1530 520 Surface 10 -3/4" 45.5# L -80 29 - 4475 29 - 2887 5210 2480 Production 7 -5/8" 29.7# L -80 28 - 12010 28 - 8716 6890 4790 Liner 4 -1/2" 12.6# 13CR80 11839 - 16632 8595 - 8924 8430 7500 Liner 4 -1/2" 12.6# L -80 16632 - 16719 8924 - 8914 8430 7500 Liner Perforation depth: Measured depth: SEE ATTACHED - _ _ True Vertical depth: _ _ Tubing: (size, grade, measured and true vertical depth) 4 -1/2" 12.6# 13Cr80 27 - 66 27 - 66 3-1/2" 9.2# 13Cr80 66 - 11841 66 - 8596 Packers and SSSV (type, measured and true vertical depth) 4 -1/2" BKR S -3 PKR 11784 8556 5" BKR ZXP LNR TOP PKR 11839 8595 RECEIVED 12. Stimulation or cement squeeze summary: y .M I q ry Intervals treated (measured): Treatment descriptions including volumes used and final pressure: t(O & G Cons. Commission 13. Representative Daily Average Production or Injection Data Oil -Bbl Gas -Mcf Water -Bbl Casing Pressure Tubing pressure Prior to well operation: 169 368 214 192 Subsequent to operation: 14. Attachments: 15. Well Class after work: Copies of Logs and Surveys Run Exploratory❑ Development 51 to Service ❑ Stratigraphic ❑ Daily Report of Well Operations X 16. Well Status after work: Oil 4) el Gas ❑ WDSPL ❑ GSTOR ❑ WINJ ❑ WAG❑ GINJ p SUSP❑ SPLUG ❑ 17. I hereby certify that the foregoing is true and correct to the best o w. 0 7 Dili j Sundry Number or N/A if C.O. Exempt: NA Contact Joe Lastufka Printed Name Jo-kL: stufk i & Title Data Manager Signatur= me Phone 564 -4091 Date 3/31/2011 Form 10-404 Revised 10/2010 RBDMS APR u / I Submit Original Only Z-46A 205 -203 PERF ATTACHMENT Sw Name Operation Date Perf Operation Code Meas Depth Top Meas Depth Base Tvd Depth Top Tvd Depth Base Z-46A 1/7/06 PER 15,600. 16,380. 8,949.76 8,940.99 Z-46A 1/7/06 PER 16,500. 16,630. 8,935.09 8,924.24 Z-46A 3/23/11 APF 14,710. 14,730. 8,963.41 8,965.34 Z-46A 3/24/11 APF 14,455. 14,475. 8,957.18 8,956.2 Z-46A 3/25/11 APF 14,040. 14,060. 8,969.16 8,968.85 Z-46A 3/25/11 APF 14,390. 14,410. 8,959.82 8,959.11 Z-46A 3/26/11 APF 13,880. 13,900. 8,976.58 8,975.72 Z-46A 3/26/11 APF 13,960. 13,980. 8,972.58 8,971.55 Z-46A 3/28/11 APF 12,664. 12,669. 8,887.77 8,888.98 Z-46A 3/28/11 APF 12,710. 12,730. 8,900.81 8,907.32 AB ABANDONED PER PERF • APF ADD PERF RPF REPERF BPP BRIDGE PLUG PULLED SL SLOTTED LINER BPS BRIDGE PLUG SET SPR SAND PLUG REMOVED FCO FILL CLEAN OUT SPS SAND PLUG SET FIL FILL SQF SQUEEZE FAILED MIR MECHANICAL ISOLATED REMOVED SQZ SQUEEZE MIS MECHANICAL ISOLATED STC STRADDLE PACK, CLOSED MLK MECHANICAL LEAK STO STRADDLE PACK, OPEN OH OPEN HOLE • • • Z -46A DESCRIPTION OF WORK COMPLETED NRWO OPERATIONS EVENT SUMMARY 11/20/2010IASRC Test Unit #3, S/B for fullbore /SLB pump crew for bullhead acid treatment, Inlet 1 Z -46, Outlet Z -17, ** *Job in progress * ** S � 11/21/2010!T/I/O= Temp =SI Acid Treatment/ Remove Hydrates from Tbg (Eval Tbg integrity) Pumped 5 bbls meth, 10 bbls 150 *f crude down Tbg, Tbg pressured up. Pumped 5 ibbls meth, 991 bbls 190 *f crude down IA. Currently swapping to Tbg to attempt to push hydrates downhole. * ** Job continued on 11 -22 -10 WSR * ** 11/22/20101*** Job continued from 11 -21 -10 WSR*** Thaw Hydrates in Tbg (Eval Tbg Integrity) Pumped 14 bbls meth down Tbg, Tbg pressured up. Pumped 122 bbls (1118 bbls itotal) 190 *f crude down IA in an attempt to remove hydrates in Tbg. Freeze protected 1 FL with 5 bbls meth. Final WHPs 600/700/560 9ASRC still on location at time of departure E g 11/25/20101ASRC Test Unit #3, standby for pump unit. ** *job in progress * ** 1* *Inlet Z -46, Outlet Z -17 ** • • - 11/26/2010 T /1 /0= 1300/120/220 Temp =SI Acid Treatment Pump 10 bbls of neat meth spear followed by 12 bbls of 70 *f 12% HCL acid. Pump 5 bbls neat meth followed by 85 Ibbls of 65 *f crude for flush. FWHP= 900/20/220 ASRC in control) of well on 'departure. 1 , ( 3 1 11/26/2010IASRC Test Unit #3 first acid pump complete. well POP, fluid to tanks. Continue i flowback ** *job in progress * ** * *Inlet Z -46, Outlet Z -17 ** I 1 I I j I 3 11/27/2010 =ASRC Test Unit #3, pH -7 - complete flowback, shut in well and freeze protect lines. j SB for pump unit ** *job in progress * ** i* *Inlet Z -46, Outlet Z -17 ** 3 11 I 3 I 1 I E gy m. .,.. �.......... .<... - ... ........®gm,..m ®,�.......«.. ».. d »:.. —.s- ....... ... ,aid 11/27/2010'T/I/O = 1900/1760/280. MIRU, PJSM, PT Lines. Perfom Mud Acid Treatment. Pumped 30 bbls of NH4CL with F -103 and 13 bbls of 12% HCL. 1 j* *Continued on 11/28/10. ** I a 1 1 , , I { 1 I 1 I I 11/28/2010'ASRC Test Unit #3 second acid treatment complete. (Safety HS2 and LeL Drill) Well POP, fluid to tanks. Continue acid flowback ** *job in progress * ** I * *Inlet Z -46, Outlet Z -17 ** 1 • • s--- 11/28/201 1 * Continued from 11/27/10. ** Mud Acid Treatment. umped an additional 20 bbls of 112% HCL and followed up with 33 bbls of 9:1 Mud Acid, 50 bbls of 3% NH4CL, 16 bbls of wax beads, 10 bbls of 3% NH4CL, 33 bbls of 12% HCL, 33 bbls 9:1 Mud Acid. Over flushed with 68 bbls of 3% NH4CL to displace 1st wax bead diversion to perfs. [ No spike in tubing pressure was seen as wax beads reached perfs however a gradual increase in tuning pressure was noted. Continued with another 16 bbls of iWax beads and followed up with 10 bbls of 3% NH4CL, 33 bbls of 12% HCI, 33 bbls of 9:1 Mud Acid. Over flushed with 100 bbls of 3% NH4CI. A gradual rise in tubing pressure occurred when the wax beads hit the perfs. Pumped displacement with 77 bbls of 3% MH4CL, 5 bbls of Methanol and 58 bbls of Diesel. Job complete. RDMO. 11/29/2010 ASRC Test Unit #3 Continue acid flowback ** *job in progress * ** * *Inlet Z -46 Outlet Z -17 ** j I t 11/30/2010 ASRC Test Unit #3 Continue acid flowback - pH -7, divert liquids to production. !Stabilize well and start 8 hour test (Well Control Drill) ** *job in progress * ** 1* *Inlet Z -46, Outlet Z -17 ** I i 12/1/2010 ASRC Test Unit #3 complete 8 hour test. Rig down lines ** *job complete * ** * *Inlet Z -46, Outlet Z -17 ** E � � t t �.,.n�.�e .. ..�Q.m.a..e �- ..a,- ....... ...«... w..e �._...,»w...- ,�m�... �. ...- �� »�..,...e.,,..».v. �.,.- .....W , m...ne..... ., , .«.....» .. 12/5/2010�T/I/O= 300/1390/340 Temp =68* TIFL * *PASSED ** (Post acid) Well is online w /AL. Initial IA FL = 11022' (GLM #1, OGLV, 375 bbls) SI well and stack out tubing to 1500 !psi in 30 min. SI AL @ casing valve w/1700 psi. Bled IAP to production to 290 psi in 12.5 hrs. TBG pressure increased 120 psi, IA FL unchanged, OAP decreased 80 psi during bleed. No changes during 1 hr. monitor. FWHP's= 1620/290/250. RELEASED WELL TO OPERATIONS. WV, SV =C. SSV, MV =O. IA, OA =OTG. NOVP. * *Job complete ** E I � I I • • 12/13/2010; ** *SLB Fullbore Scale Inhibition Treatment * ** Job Scope: Pump scale inhibition with two stages of wax bead diversions MIRU, Pumped recommended schedule for well with two 500# wax bead diversions. 1st Wax bead diversion 400 psi, 2nd Wax bead diversion 460 psi. Flushed tubing and liner to top of perfs with 1% KCI, Freeze protecting well to 2825' MD/ 2088' TVD Pad Op notified to leave well S/I for min of 12 hrs then POP Notified lab of sample schedule. ** *Job Complete * ** E i 3/22/2011 ** *WELL SHUT IN ON ARRIVAL * ** 'INITIAL T/ I/ 0 = 450/ 350/ 220 PSI RIG UP FOR AD PERF. ** *JOB INCOMPLETE. CONTINUED ON 23- MAR -2011 AWGRS * ** 3/23/2011 ** *CONTINUED FROM PREVIOUS DAY * ** (ELINE: PERF) WELL SHUT IN ON ARRIVAL 1 INITIAL T/ I/ 0 = 450/ 350/ 220 PSI PERFORATED FROM 14710'-14730' USING 2" HSD 2006 PJ HMX, 6 SPF, 60 DEG PHASING. 1TRACTORED FROM 12270' - 14864' USING SLB MAXTRAC. 1 ** *JOB INCOMPLETE. CONTINUED ON 24- MAR -2011 WSR * ** I � � 3/24/2011 ** *CONTINUED FROM PREVIOUS DAY * ** (ELINE: PERF) WELL SHUT IN ON ARRIVAL INITIAL T/ I/ 0 = 450/ 350/ 220 PSI PERFORATED FROM 14455' - 14475' USING 2" HSD 2006 PJ HMX, 6 SPF, 60 !DEG PHASING. TRACTORED FROM 12300' - 14600' USING SLB MAXTRAC. ** *JOB INCOMPLETE. CONTINUED ON 25- MAR -2011 WSR * ** 3/25/2011 ** *CONTINUED FROM PREVIOUS DAY * ** (ELINE: PERF) WELL SHUT IN ON ARRIVAL INITIAL T/ I/ 0 = 450/ 350/ 220 PSI PERFORATED FROM 14390' - 14410' AND 14040' - 14060' USING 2" HSD 2006 PJ HMX, 6 SPF, 60 DEG PHASING. 1TRACTORED FROM 12300' - 14600' USING SLB MAXTRAC. 1***JOB INCOMPLETE. CONTINUED ON 26- MAR -2011 WSR * ** • i 3/26/2011 WOL TINUED FROM M PREVIOUS DAY * ** (ELINE: PERF) EL SHUT INITIAL T/ I/ O = 750/ 350/ 220 PSI !PERFORATED FROM 13960' - 13980' AND 13880' - 13900' USING 2" HSD 2006 IPJ HMX, 6 SPF, 60 DEG PHASING. TRACTORED FROM 12300' - 14100' USING SLB MAXTRAC. ** *JOB INCOMPLETE. CONTINUED ON 27- MAR -2011 WSR * ** 1 3/27/2011 ** *CONTINUED FROM PREVIOUS DAY * ** (ELINE: PERF) WELL SHUT IN ON ARRIVAL ! INITIAL T/ I/ 0 = 800/ 400/ 220 PSI PERFORATED FROM 13800' - 13820' AND 13580' - 13600' USING 2" HSD 2006 IPJ HMX, 6 SPF, 60 DEG PHASING. !TRACTORED FROM 12300' - 14100' USING SLB MAXTRAC. ** *JOB INCOMPLETE. CONTINUED ON 28- MAR -2011 WSR * ** 3/28/20111 ** *CONTINUED FROM PREVIOUS DAY * ** (ELINE: PERF) WELL SHUT IN ON ARRIVAL !INITIAL I/ 0 = 800/ 400/ 220 PSI !PERFORATED FROM 12710' - 12730' AND 12664' - 12679' USING 2" HSD 2006 !PJ HMX, 6 SPF, 60 DEG PHASING. 'TRACTORED FROM 12300' - 12820' USING SLB MAXTRAC. WELL LEFT SHUT IN. SWAB CLOSED, SSV OPEN, MASTER OPEN, TREE CAP !PRESSURE TESTED. WELL TURNED OVER TO DSO. FINAL T/ I/ 0 = 800/ 450/ 220 PSI ** *JOB COMPLETE * ** FLUIDS PUMPED BBLS 557 1% TECHNI -WET 4353 IN 1% KCL 147 1% KCL 99 10% SCALETROL 720 W/ 0.25% TECHNI -WET 4353 IN 1% KCL 116 DIESEL 121 NEAT METH 1393 CRUDE 96 60/40 METH 65 12% HCL 16 WAX BEADS 233 3% NH4CL 66 9:1 MUD ACID 2909 TOTAL TREES 4 -1/16 5M CIW WELLHEAD = FMC GEN 5 SAFETY NOTESOCHROME 3 - 1 /2" TBG & 4 - 1 /2" LNR * ** ACTUATOR = ?-46A KB. ELEV = 82.5' BF. ELEV = 54' KOP = 4750' Max Angle = 96 @ 15202' 66' 1- 14 - 1/2" x 3 -112" XO, ID = 3.062" I Datum MD = 12641 Datum TV D = 8800' SS 2676' 1-13 -112" HES X NIP, ID = 2.813" 1 4 -1/2" TBG, 12.6 #, 13CR TCII, - 66' GAS LIFT MANDRELS .0152 bpf, ID = 3.958" ST MD TVD DEV TYPE VLV LATCH PORT DATE 'TOP OF CEMENT (12/18/05) I - 1 4230' , ►� 7 3671 2496 62 MMG DMY RKP 0 06/15/06 6 5366 3513 36 MMG DOME RK 16 02/03/07 10-3/4" CSG, 45.5 #, - 4475' a 4, 5 6465 4395 37 MMG DMY RK 0 06/15/06 •i L -80 BTC, ID = 9.950" ! 1 4 7594 5299 36 MMG DOME RK 16 02/03/07 1 KICKOFF CMT PLUG 1 4475' - 4495' � 3 8682 6184 34 MMG DOME RK 16 02/03/07 i 2 9805 7087 39 MMG DOME RK 16 02/03/07 / t , 1 11022 8004 44 MMG SO RK 20 02/03/07 Minimum ID = 2.813" @ 2676' AWN*, 3-1/2" HES X NIPPLE IIIIi11110, % • . • * 1 1 1 • . • . • * 1 Mn 400000 • � 9600' (--17 5/8" ES CEMENTER I I7 -5/8" CSG STUB (12/15/05) I 4575' 17 -5/8" EZSV (12/18/05) 1-1 4650' 17 EZSV (12/13/05) I-1 15098' I I 11710' H3 -112" HES X NP, ID = 2.813" I •'•'i'•'•'1'1 I 11730' J - 3 -1/2" HES SYMPHONY PLUS GAUGE 41111111111 CARRIER w /CABLE TO SURFACE IN IA 7 -5/8" CSG, 29.7 #, - I 15293' I 00400** I0A444.4.....1.4. Wei 11782' - 13 -1 /2" X 4-1/2" XO, ID = 2.960" I L -80 BTC-M, ID = 6.875" � • i • i • 1 • 1 • 1 • 1 • 1 • 1 • • ' • i • 1 • • • • • • • • • • • 1 • ►�.I OM 1 11784' I - 17 - 5/8" X 4 -112" BKR S3 PKR, ID = 3.870" I 1 1 1 1 1 4 4 i i + 4 4 i 1 4 t . 11788' 1-14-1/2" X 3-1/2" X0, ID = 2.960" 1 ••••••• ∎OA I 11810' 1 - 1/2" HESX NIP, ID = 2.813" I 1 TD --I 15828' 1 •Ii•1•i1, 11830' 1 - 112" HESX NIP, ID = 2.813" I 11839' 117 -5/8" X 5" BKR ZXP LNR TOP PKR w /TIEBACK SLV (PBR), ID = 4.890" I3 -1/2" TBG, 9.2 #, 13CR VAM TOP, .0087 bpf, ID = 2.992" I-1 11841' 1 I 11841' , - 13 - 1/2" X 4 -112" XO, ID = 2.962" 17 -5/8" CSG, 29.7 #, L -80 BTC-M, ID = 6.875" 1 12006' 11845' 1-14 -112" WLEG, ID = 3.985" 1 H EL MD TT NOT LOG I PERFORATION SUMMARY 11856' 1-17 -518" X 5" BKR HMC LNR HNGR, ID = 4.830" I REF LOG: N/A (TBG CONVEYED) 11863' 1 X 4 -1/2" X0, ID = 3.980" I ANGLE AT TOP PERF: 91 @ 15600' Note: Refer to Production DB for historical perf data SIZE SPF INTERVAL Opn /Sqz DATE 2 -1/2" 4 15600 - 16380 0 01/07/06 2-1/2" 4 16500 - 16630 0 01/07/06 1 1 PBTD -1 16632' 1 1 I •I•Iq•1.0 14 -1/2" LNR, 12.6 #, 13CR80 VAM, .0152 bpf, ID = 3.958" 1 - 1 16719' � 44.4 � 4 � 4 .1 1 DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 01/09/06 N7ES ORIGINAL COMPLETION (Z -46A; WELL: Z -46A 01/27/06 RWL/TLH DRLG DRAFT CORRECTIONS PERMIT No: / 052030 02/19/06 KSB/TLH GLV C/O API No: 50- 029 - 23280 -01 06/14/06 JRP /PJC GLV C/O SEC 19, T11 N, R12E, 983' FNL, 2940' FEL 02/10/07 JCM/PAG GLV C/0 (02/03/07) BP Exploration (Alaska) Wells with ice plugs during to shut-dove Page 1 of 1 Regg, James B (DOA) From: AK, D &C Well Integrity Coordinator [AKDCWelllntegrityCoordinator @bp.com] Sent: Saturday, January 15, 2011 1:40 PM To: Regg, James B (DOA); Maunder, Thomas E (DOA)�� fr f " Cc: AK, D &C Well Integrity Coordinator Subject: Wells with ice plugs during to shut -down Jim, The following wells were found to have ice plugs in the tubing. They are all artificially lifted producers that are stacked out with gas lift on the IA. The plan forward is to have a pumping unit thaw the ice plugs by pumping down the backside. We will keep you informed of the progress and any other wells with ice plugs as they are discovered. V -05 (PTD # 2080930) V -205 (PTD #2061800) ✓Z -46A (PTD #2052030) Thank you, Torin Roschinger (alt. Jerry Murphy) Well Integrity Coordinator 'y`s FEB If 201't Office (907) 659 -5102 Harmony Radio x2376 Cell (406) 570 -9630 Pager (907) 659 -5100 Ext. 1154 1/24/2011 06/18/10 /, I1 u l~ ~c~tumherger Alaska Data & Consulting Services 2525 Gambetl Street, Suke 400 Anchorage, AK 89503-2838 ATTN; Beth Well Job # N0.5545 Company: State of Alaska Alaska Oil & Gas Cons Comm Attn: Christine Mahnken 333 West 7th Ave, Suite 100 Anchorage, AK 99501 Log Description Date BL Color CD E-198 BBUO-00015 STATIC BOTTOM & TEMP SURVEY ~ - ~ 04/03/10 1 1 H-30 BCR0.00020 PRODUCTION PROFILE 05/10/10 1 1 P2-34 B3SQ-00071 STATIC PRESSURE SURVEY 05/15/10 1 1 P2-34 8350-00073 IPROF WITH STATIC SURVEY 05/19/10 1 1 V-05 AWJI-00090 MEM CBL ? 05/24/10 1 1 P2-17 16-068 BCRC-00017 BBUO.00023 PRODUCTION PRO ICE PRODUCTION PROFILE 06/01/10 06/08/10 1 1 1 1 S-21 Z-46A BBSK-00019 BAl1J-00027 PRODUCTION PROFILE MEM CBL 06/03/10 06/01/10 1 1 1 i V-05 BD88-00018 MEM LOL 06/08/10 1 1 Ot-26A 8148-00106 SCMT 06/10/10 1 1 B-13A 1-27/P-20 BBUO-00019 AYKP-00085 USIT RST & FL RECOR 05/28/10 06/06/10 1 1 1 1 1-27/P-20 MPF-82A AYKP-00085 BAUJ-00010 PRODUCTION PROFILE MCNL 06/06/10 04/06/10 1 1 1 1 Z-16A E-150 BCUE-00005 AWJI.00081 CH EDIT PDC MEM CORK CATION MCNL 04/06/10 04/03/10 1 1 1 05-19 BBKA-00013 RST 03/14/10 1 1 F-27A AYKP-00078 RST 03/17/10 1 1 J-18A BD88-00010 MCNL 04!18/10 1 1 BP Exploration (Alaska) Inc. Petrotechnical Data Center LR2-1 900 E. Benson Blvd. Alaska Data 8 Consulting Services 2525 Gambell Street, Suite 400 Anchorage, AK 99503-2838 ,b ~~~~~ ~ BP Exploration (Alaska) Inc. Attn: Weli Integrity Coordinator, PRB-20 Post Office Box 196612 Anchorage,Alaska 99519-6612 August 14, 2009 ;;?'C~a+~~l~g~~s~ ;F ~ .i "(' ~ ~~~~i Mr. Tom Maunder Alaska Oil and Gas Conservation Commission 333 West 7th Avenue Anchorage, Alaska 99501 Subject: Corrosion Inhibitor Treatments of GPB Z-Pad Dear Mr. Maunder, ~ bp ~~e.rE~~~~ OCT 0 5 2009 ~lask~ Dil ~ Gas Cons. Gor~iRaiQn Anchoraqe c~~" a2.~ ~~ ~~~ Enclosed please find multiple copies of a spreadsheet with a list of wells from GPB Z- Pad 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, at 659-5102. 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) Date Z-Pad 8/13l2009 Well Name PTD # API # Initial top of cement Vol. of cement um ed Final top of cement Cement top off date Corrosion inhibitor Corrosion inhibitor/ sealant date ft bbis ft na al Z-01 B 2081080 50029218300200 NA 0.2 NA 3.40 7/24/2009 Z-02A 1960430 50029218140100 NA 0.4 NA 3.40 7/24/2009 Z-03 1971310 50029227870000 NA 1.3 NA 11.90 7/24/2009 Z-04A 2042300 50029219900100 NA 1.5 NA 14.50 7/24/2009 Z-05 1900780 50029220560000 NA 1 NA 8.50 7/24/2009 Z-06 1880320 50029217980000 NA 0.1 NA 1.70 7/24/2009 Z-07A 1931100 50029220460100 NA 2 NA 17.00 7/24/2009 Z-OSA 1931280 50029217870100 NA 0.2 NA 2.55 7/24/2009 Z-09A 2081410 50029219670100 NA 0.2 NA 1.70 7/24/2009 Z-10 1891160 50029219860000 NA 1.3 NA 11.10 7/24/2009 Z-11A 2050310 50029220530100 NA 0.2 NA 1.70 7/26/2009 Z-12 1891020 50029219770000 NA 1.2 NA 8.50 7/26/2009 Z-13A 2042030 50029220690100 NA 3.6 NA 24.66 7/26/2009 Z-146 2060990 50029218440200 NA 0.2 NA 1.70 7/26/2009 Z-15 1880880 50029218490000 NA 0.2 NA 1.70 7/26/2009 Z-16 1920120 50029222450000 NA 0.3 NA 2.55 7/26/2009 Z-17 1891390 50029220010000 NA 3.7 NA 34.00 7/26/2009 Z-18 1890960 50029219710000 NA 02 NA 1.70 7/26/2009 Z-19A 2061050 50029222510100 NA 0.2 NA 1.70 7/26/2009 Z-20 1881000 50029218590000 NA 0.2 NA 1.70 7/26/2009 Z-21A 2001010 50029219380100 NA 0.2 NA 1.70 7/23/2009 Z-226 1960350 50029220370200 NA 0.5 NA 5.10 7/23/2009 Z-238 2041080 50029219500200 NA 0.3 NA 1.70 7/23/2009 Z-24 1890180 50029219170000 NA 0.3 NA 2.55 7/23/2009 Z-25 1881590 50029219020000 NA 02 NA 1.70 7/23/2009 Z-26A 2060790 50029219450100 NA 0.3 NA 3.40 7/23/2009 Z-27 1900310 50029220220000 NA 0.2 NA 2.55 7/25/2009 Z-28 1881270 500292t8790000 NA 0.2 NA 1.70 7/25/2009 Z-29 1890650 50029219540000 NA 0.2 NA t.70 7/25/2009 Z-30A 2032190 50029220130100 NA 0.2 NA 3.40 7/25/2009 Z-31 1881120 50029218710000 NA 0.3 NA 3.40 7/26/2009 Z-32BL1 1970350 50029219246000 NA 0.2 NA 1.70 7/25/2009 Z-33A 1890050 50029218950too NA 0.5 NA 3.40 8/8/2009 Z-35 1980930 50029228840000 NA 1.3 NA 1 t.50 7/4/2009 Z-38 1980600 50029228730000 NA 1.2 NA 11.90 7/26/2009 Z-39A 2042240 50029229950100 NA 3.8 NA 39.90 7/25/2009 Z-46A 2052030 50029232800100 NA 1.7 NA 13.60 7/26/2009 Z-t00 2031710 50029231820000 NA 5 NA 45.90 7/23/2009 Z-101 2001620 50029229780000 NA 1 NA 10.20 7/23/2009 Z-102 2070500 50029233530000 NA 1.5 NA 15.30 7/25/2009 Z-103 2042290 50029232350000 NA 1.5 NA 10.20 7/25/2009 Z-108 2052010 50029232920000 NA 1.5 NA t 1.90 7/24/2009 Z-112 2071720 5002s233s00000 NA surface NA DATA SUBMITTAL COMPLIANCE REPORT 2/26/2008 Permit to Drill 2052030 Well Name/No. PRUDHOE BAY UNIT Z-46A Operator BP EXPLORATION (ALASKA) INC MD 16721 TVD 8913 Completion Date 1/9/2006 Completion Status 1-OIL Current Status 1-OIL REQUIRED INFORMATION API No. 50-029-23280-01-00 UIC N Mud Log No Samples No Directional S DATA INFORMATION Types Electric or Other Log s Run: MWD DIR / GR !RES / PW D, MWD DIR / GR /RES /AIM, USIT Well Log Information: Log/ Electr Data Digital Dataset Log Log Run Typ Med/Frmt Number Name Scate Media No D Asc Directional Survey Rpt Directional Survey D C Lis 15455 Induction/Resistivity ~gg 15455 ~/ Induction/Resistivity 25 Blu ~ 15455 Induction/Resistivity 25 Blu Well Cores/Samples Information: Name (data taken from Logs Portion of Master Well Data Maint Interval OH / Start Stop CH Received Comments 0 16721 Open 2/14/2006 0 16721 Open 2/14/2006 ' 135 16722 Open 9/28/2007 LIS Veri, GR, ROP, FET, DRHO, NPHI w/PDS and j TIF graphics 110 16721 Open 9!28!2007 MD Vision Service final ~I print 3-Jan-2006 110 16721 Open 9/28/2007 TVD Vision Service final print 3-Jan-2006 Sample Interval Set Start Stop Sent Received Number Comments ADDITIONAL INFORMATION Well Cored? Y ~1 Chips Received? ,~(,(,~.,. Analysis aLL.PI~ Received? Comments: Compliance Reviewed By: Daily History Received? ~+/ N Formation Tops ~N Date: ~v~ 09/24/07 • /~ ~~~~~mt1~~~~ NO. 4414 Alaska Data 8 Consulting Services Company: State of Alaska 2525 Gambell street, Suite 400 Alaska Oil 8 Gas Cons Comm Anchorage, AK 99503-2838 Attn: Christine Mahnken ATTN: Beth 333 West 7th Ave, Suite 100 Anchorage, AK 99501 Field: Prudhoe Bay Ws~ll _Inh S 1 nn nnserin}inn nafa RI Cnlnr Cn 09-25 11695072 LDL ~ .c _ 08/17/07 1 L-04 11661166 SCMT 08/25/07 1 15-26B 11661165 MEM PROD PROFILE 08/23/07 1 02-126 11628789 MEM PROD PROFILE Q 08/20/07 1 02-11A 11428266 MCNL ~ - / ` 10/03/06 1 1 18-24AL2 11209591 MCNL ~ ~ ~ (p 03/23106 1 1 14-07 11637334 RST ~ '•} - / C 05/08/07 1 1 B-14 11637349 RST ~~-- / e/ 07/04/07 1 1 Z-08A 11630483 RST - C 06/21/07 1 1 Z-46 40012671 OH EDIT MWD/LWD - ~ / 4i < 12/12/05 2 1 Z-46A 40012671 OH EDIT MWD/LWD '~ / - -,?p5 .t(t 01/03/06 2 1 E-37A 10928640 MCNL 2 p~ -~ '/ 06/14/05 1 1 B-34 11594510 RST u q- ~- 4 ~- 06114/07 1 1 MPH-17 11813063 CBUUSIT (PDC) CH EDIT ~(~~ -(~ (S ~ 07/21107 1 YLtA~t AI:FINVWLtUGt KtGtIPI tlY SIGNING ANU KEIUKNING VNt GVPY tAGK TV: BP Exploration (Alaska) Inc. Petrotechnical Data Center LR2-1 - ~ ,'_ ' 900 E. Benson Bivd. '~~~ ~ `" ~ ~ -~ ~~„- ~ Anchorage, Alaska 99508 Date Delivered: ~~-~~°' '_i; Cs C'.~~~ . E.~tfrlYusWl~Ws0i~il _~ Alaska Data & Consulting Services 2525 Gambell Street, Suite 400 Anchorage, AK 99503-28 8 ATTN: Beth Received by: ~ ~--- STATE OF ALASKA ALAS LAND GAS CONSERVATION COM~ION WELL COMPLETION OR RECOMPLETION REPORT AND LOG 03/08/06: Revised, Put on Production 1a. Well Status: ®Oil ^ Gas ^ Plugged ^ Abandoned ^ Suspended ^ WAG zaAACZS.,os zoAACZS.>>o ^ GINJ ^ WINJ ^ WDSPL No. of Completions One Other ib. Well Class: ®Development ^ Exploratory ^ Stratigraphic ^ Service 2. Operator Name: BP Exploration (Alaska) Inc. 5. Date Comp., Susp., or Aband. 1/9/2006 12. Permit to Drill Number 205-203 3. Address: P.O. Box 196612, Anchorage, Alaska 99519-6612 6. Date Spudded 12/18/2005 13. API Number 50-029-23280-01-00 4a. Location of Well (Governmental Section): Surface: ' ' 7. Date T.D. Reached 1/3/2006 f 4. Well Name and Number: PBU Z-46A 4297 FSL, 2940 FEL, SEC. 19, T11 N, R12E, UM Top of Productive Horizon: 2469' FSL, 4806' FEL, SEC. 29, T11 N, R12E, UM 8. KB Elevation (ft): 82.8 15. Field /Pool(s): Prudhoe Bay Field / Prudhoe Bay Pool Total Depth: 2740' FSL, 883' FEL, SEC. 29, T11N, R12E, UM 9. Plug Back Depth (MD+TVD) 16632 + 8924 Ft 4b. Location of Well (State Base Plane Coordinates): Surface: x- 599738 y- 5959100 Zone- ASP4 10. Total Depth (MD+TVD) 16721 + 8913 Ft 16. Property Designation: ADL 028248 __ TPI: x- 603273 y- 5952040 Zone- ASP4 Total Depth: x- 607190 Y- 5952366 Zone- ASP4 11. Depth where SSSV set None MD 17. Land Use Permit: ---~----- ----------~ ------- f P f 18. Directional Survey ®Yes ^ No 19. Water depth, if offshore N/A MSL erma rost 20. Thickness o 1900' (Approx.) 21. Logs Run: MWD DIR / GR /RES / PWD, MWD DIR / GR /RES /AIM, USIT 2. CiASING, LINER AND EMENTING RECORD CASING ETTINO EPTH MD ETTIN(i EPTH TVD HOLE MOUNT SIZE WT. PER FT. GRADE OP TTOM OP TTOM SIZE CEMENTING RECORD PULLED ' 20" 91.5# H-40 Surface 108' Surface 108' 42" 60 sx Arctic Set A rox. 10-3/4" 45.5# L-80 29' 4475' 29' 2886' 13-1/2" 25 sx AS Lite, 460 sx Class 'G' 7-5/8" 29.7# L-80 24' 12006' 24' 8713' 9-7/8" 48 sx Class 'G', 471 sx Crete 4-1 /2" 12.6# 13Cr80 11839' 16720' 8595' 8914' 6-3/4" 194 sx Class 'G', 583 sx Class 'G' 23. Perforations open to Produc tion (MD + TV D of Top and " " 24. TUBING RECORD Bottom Interval, Size and Number; if none, state none ): SIZE DEPTH SET (MD) PACKER SET (MD) 2-1/2" Gun Diameter, 4 spf 3-1/2", 9.2#, 13Cr80 11845' 11784' MD TVD MD TVD 15600' - 16380' 8950' - 8941' 16500' - 16630' 8935' - 8924' 25. ACIO, FRACTURE, CEMENT SQUEEZE, ETC. DEPTH INTERVAL MD AMOUNT 8c KIND OF MATERIAL USED Freeze Protect w/ 95 Bbls of Diesel 26• PRODUCTION TEST Date First Production: February 27, 2006 Method of Operation (Flowing, Gas Lift, etc.j: Gas Injection Date of Test 2/27/2006 Hours Tested 6 PRODUCTION FOR TEST PERIOD OIL-BBL 338 GAS-McF 125 WATER-BBL 14 CHOKE SIZE 128/64 GAS-OIL RATIO 370 Flow Tubing Press. 28 Casing Pressure 1,100 CALCULATED 24-HOUR RATE OIL-BBL 1,351 GAS-MCF 500 WATER-BBL 84 OIL GRAVITY-API (CORK) 27. CORE DATA Brief description of lithology, porosity, fractures, apparent dips and presence of oil, gas or water (attach separate sheet, if necessary). Submit core chips; if none, state "none". None ._ ~ ~~R (} ~ 7~~~ RECEIVED MAR 0 8 2006 s. ommissi Form 10-407 Revised 12/2003 ~ ~ ~ ~ ~4 IC:T~VUED ON REVERSE $IDE Anchorage 28. GEOLOGIC MARKER 29' RMATION TESTS Include and briefly summarize test results. List intervals tested, NAME MD TVD and attach detailed supporting data as necessary. If no tests were conducted, state "None". Ugnu 4842' 3113' None Ugnu M 6328' 4287' Schrader Bluff N 6709' 4589' Schrader Bluff O 6957' 4787' Base Schrader Bluff /Top Colville 7347' 5099' H RZ 9106' 6532' Kalubik 9471' 6825' Kuparuk C 9487' 6837' Kuparuk A 9521' 6864' Miluveach 9542' 6881' Kingak 10290' 7465' Sag River 12015' 8720' Shublik 12051' 8744' Eileen 12351' 8848' Sadlerochit 12658' 8886' Sadlerochit 16664' 8921' 30. List of Attachments: Summary of Daily Drilling Reports, Well Schematic Diagram, Surveys 31. I hereby certify that the foregoing is true and correct to the best of my knowledge. ~2 Signed Terrie Hubble Title Technical Assistant Date W ~~~~ PBU Z-46A 205-203 Prepared By Narne/Number Terrie Hubble, 564-4628 Well Number Drilling Engineer: Shane Gagliardi, 564-5251 Permit No. / A royal No. INSTRUCTIONS GeNeaA~: This form is designed for submitting a complete and correct well completion report and log on all types of lands and leases in Alaska. IreM 1a: Classification of Service Wells: Gas Injection, Water Injection, Water-Alternating-Gas Injection, Salt Water Disposal, Water Supply for Injection, Observation, or Other. Multiple completion is defined as a well producing from more than one pool with production from each pool completely segregated. Each segregated pool is a completion. Frets 4b: TPI (Top of Producing Interval). IreM 8: The Kelly Bushing elevation in feet above mean low low water. Use same as reference for depth measurements given in other spaces on this form and in any attachments. IreM 13: The API number reported to AOGCC must be 14 digits (ex: 50-029-20123-00-00). IreM 20: True vertical thickness. IreM 22: Attached supplemental records for this well should show the details of any multiple stage cementing and the location of the cementing tool. IreM 23: If this well is completed for separate production from more than one interval (multiple completion), so state in item 1, and in item 23 show the producing intervals for only the interval reported in item 26. (Submit a separate form for each additional interval to be separately produced, showing the data pertinent to such interval). IreM 26: Method of Operation: Flowing, Gas Lift, Rod Pump, Hydraulic Pump, Submersible, Water Injection, Gas Injection, Shut-In, or Other (explain). IreM 27: If no cores taken, indicate "None". IreM 29: List all test information. If none, state "None". Form 10-407 Revised 12/2003 Submit Original Only STATE OF ALASKA ALAS LAND GAS CONSERVATION COM v ION WELL COMPLETION OR RECOMPLETION REPORT AND LOG ~0~ FHB 2 4 20D~ ~alaska fit ~ ~8s Guns" Comntissiotr 1a. Well Status: ®Oil ^ Gas ^ Plugged ^ Abandoned ^ Suspended ^ WAG 2oAAC 2s.,os 2oAAC 2s.,,o ^ GINJ ^ WINJ ^ WDSPL No. of Completions One Other ib. Well Class: (tC OtBg@ ®Development ^ Exploratory ^ Stratigraphic ^ Service 2. Operator Name: BP Exploration (Alaska) Inc. 5. Date Comp., Susp., or Aband. 1/9/2006 12. Permit to Drill Number 205-203 3. Address: P.O. Box 196612, Anchorage, Alaska 99519-6612 6. Date Spudded 12/18/2005 13. API Number 50-029-23280-01-00 4a. Location of Well (Governmental Section): Surface: ' ' 7. Date T.D. Reached 1/3/2006 14. Well Name and Number: PBU Z-46A 4297 FSL, 2940 FEL, SEC. 19, T11 N, R12E, UM Top of Productive Horizon: 2469' FSL, 4806' FEL, SEC. 29, T11 N, R12E, UM g• KB Elevation (ft): 82.8 15. Field /Pool(s): Prudhoe Bay Field / Prudhoe Bay Pool Total Depth: 2740' FSL, 883' FEL, SEC. 29, T11N, R12E, UM 9. Plug Back Depth (MD+TVD) 16632 + 8924 Ft 4b. Location of Well (State Base Plane Coordinates): Surface: x- 599738 y- 5959100 Zone- ASP4 10. Total Depth (MD+TVD) 16721 + 8913 Ft 16. Property Designation: ADL 028248 _ TPI: x- 603273 y- 5952040 Zone- ASP4 Total Depth: x- 607190 Y- 5952366 Zone- ASP4 11 • Depth where SSSV set None MD 17. Land Use Permit: ----------- -------~------- ----- i k f t f P 18. Directional Survey ®Yes ^ No 19. Water depth, if offshore N/A MSL ness o erma ros 20. Th c 1900' (Approx.) 21. Logs Run: MWD DIR / GR /RES / PWD, MWD DIR / GR /RES /AIM, USIT 2. ASING, LINER AND CEMENTING RECORD CASING NG EPTH MD ETTINCi EPTH TVD HOLE OUNT SIZE WT. PER FT. GRADE OP TTOM OP TTOM SIZE CEMENTING RECORD PULLED 20" 91.5# H-40 Surface 108' Surface 108' 42" 60 sx Arctic Set A rox. 10-3/4" 45.5# L-80 29' 4475' 29' 2886' 13-1/2" 25 sx AS Lite, 460 sx Class 'G' 7-5/8" 29.7# L-80 24' 12006' 24' 8713' 9-7/8" 8 sx Class 'G', 471 sx Crete 4-1 /2" 12.6# 13Cr80 11839' 16720' 8595' 8914' 6-3/4" 194 sx Class 'G', 583 sx Class 'G' 23. Perforations open to Produc tion (MD + TV D of Top and " " 24. T UBING RECORD Bottom Interval, Size and Number; if none, state none ): SIZE DEPTH SET (MD) PACKER SET (MD) 2-1/2" Gun Diameter, 4 spf 3-1/2", 9.2#, 13Cr80 11845' 11784' MD TVD MD TVD 15600' - 16380' 8950' - 8941' 16500' - 16630' 8935' - 8924' 25. ACID, FRACTURE, CEMENT SQUEEZE, ETC. DEPTH INTERVAL MD AMOUNT & KIND OF MATERIAL USED Freeze Protect w/ 95 Bbls of Diesel 26• PRODUCTION TEST Date First Production: Not on Production Yet Method of Operation (Flowing, Gas Lift, etc.): N/A Date of Test Hours Tested PRODUCTION FOR TEST PERIOD OIL-BBL GAS'MCF WATER-BBL CHOKE SIZE GAS-OIL RATIO Flow Tubing Press. Casing Pressure CALCULATED 24-HOUR RATE OIL-BBL GAS-MCF WATER-BBL OIL GRAVITY-API (CORK) 27. CORE DATA Brief description of lithology, porosity, fractures, apparent dips and presence of oil, gas or water (attach separate sheet, if necessary). Submit core chips; if none, state "none". /- ' None s ~~s9w°. p f / o.~((Ji a~ _~-y~~ . Form 10-407 Revised 12/2003 CONTINUED ON REVERSE SIDE ~J ~8. GEOLOGIC MARKERS 29' rORMATION TESTS Include and briefly summarize test results. List intervals tested, NAME MD ND and attach detailed supporting data as necessary. If no tests were conducted, state "None". Ugnu 4842' 3113' None Ugnu M 6328' 4287' Schrader Bluff N 6709' 4589' Schrader Bluff O 6957' 4787' Base Schrader Bluff /Top Colville 7347' 5099' H RZ 9106' 6532' Kalubik 9471' 6825' Kuparuk C 9487' 6837' Kuparuk A 9521' 6864' Miluveach 9542' 6881' Kingak 10290' 7465' Sag River 12015' 8720' Shublik 12051' 8744' Eileen 12351' 8848' Sadlerochit 12658' 8886' Sadlerochit 16664' 8921' 30. List of Attachments: Summary of Daily Drilling Reports, Well Schematic Diagram, Surveys 31. I hereby certify that the foregoing is true and correct to the best of my knowledge. ~ .2 / O ~'~~ ~ ~ Title Technical Assistant Date Signed Terrie Hubble ~1~ PBU Z-46A 205-203 Prepared ey Name/NumGer.• Terrie Hubble, 564-4628 Well Number Permit No. / A royal No. Drilling Engineer: Shane Gagliardi, 564-5251 INSTRUCTIONS GeNean~: This form is designed for submitting a complete and correct well completion report and log on all types of lands and leases in Alaska. ITeM 1a: Classification of Service Wells: Gas Injection, Water Injection, Water-Alternating-Gas Injection, Salt Water Disposal, Water Supply for Injection, Observation, or Other. Multiple completion is defined as a well producing from more than one pool with production from each pool completely segregated. Each segregated pool is a completion. ITeM 4b: TPI (Top of Producing Interval). ITeM 8: The Kelly Bushing elevation in feet above mean low low water. Use same as reference for depth measurements given in other spaces on this form and in any attachments. ITeM 13: The API number reported to AOGCC must be 14 digits (ex: 50-029-20123-00-00). ITeM 20: True vertical thickness. treM 22: Attached supplemental records for this well should show the details of any multiple stage cementing and the location of the cementing tool. heM 23: If this well is completed for separate production from more than one Interval (multiple completion), so state in item 1, and in item 23 show the producing intervals for only the interval reported in item 26. (Submit a separate form for each additional interval to be separately produced, showing the data pertinent to such interval). ITeM 26: Method of Operation: Flowing, Gas Lift, Rod Pump, Hydraulic Pump, Submersible, Water Injection, Gas Injection, Shut-In, or Other (explain). ITeM 27: If no cores taken, indicate "None". ITeM 29: List all test information. If none, state "None". Form 10-407 Revised 12/2003 Submit Original Only Printed: 1/16/2006 11:48:53 AM BP EXPLORATION Page 1 of 12 Operations Summary Report Legal Well Name: Z-46 Common Well Name: Z-46 Spud Date: 11/17/2005 Event Name: DRILL+COMPLETE Start: 11/15/2005 End: 12/14/2005 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 1/9/2006 Rig Name: NABOBS 7ES Rig Number: 7ES Date From - To Hours Task Code NPT 'I Phase ! Description of Operations ,._ _ 11/15/2005 108:00 -12:00 4.00 ~ MOB P ~ PRE R/D steam and electrical service for derrick down move 12:00 - 15:30 I 3.501 MOB I P 15:30 - 20:00 I 4.501 MOB I P PRE PRE 20:00 - 00:00 4.00 MOB P PRE 11/16/2005 00:00 - 01:30 1.50 MOB P PRE 01:30 - 02:30 1.00 RIGU P PRE 02:30 - 05:00 2.50 RIGU P PRE 05:00 - 09:00 4.00 RIGU P PRE 09:00 - 12:00 3.00 RIGU P PRE 12:00 - 19:30 7.50 RIGU P PRE 19:30 - 21:30 2.00 RIGU P PRE 21:30 - 22:30 1.00 RIGU P PRE 22:30 - 00:00 1.50 RIGU P PRE 11/17/2005 00:00 - 02:00 2.00 RIGU P PRE 02:00 - 03:30 1.50 RIGU P PRE 03:30 - 04:00 0.50 RIGU P PRE 04:00 - 05:30 1.50 DRILL P PRE 05:30 - 06:30 1.00 DRILL P PRE 06:30 - 07:30 1.00 DRILL P PRE 07:30 - 08:30 1.00 DRILL P SURF 08:30 - 09:00 0.50 DRILL P SURF 09:00 - 11:00 2.00 DRILL P SURF 11:00 - 12:00 1.00 DRILL P SURF 12:00 - 19:00 7.00 DRILL P SURF Prep rig to lay down derrick. Install jeep on pits complex. R/D rig floor to lay down derrick & LD same. Move Shop, Satellite camp and pits complex to Z-pad. Move sub off of W-07A pick up rig mats and load out, clean location. spot sub to work on BOPE. Change out annular preventer and clean up cellar area while moving Camp, pits complex and shop to Z-Pad. Change oil and service top drive. Perform visual inspection of derrick. Note: Security unavailable to move substructure 17:00 - 20:00 Hrs. Move rig from W-Pad to Z-Pad. Cont' move rig onto Z-pad and position same to raise the derrick. PJSM and raise derrick and cattle chute, pin torque tube. R/D bridle lines and secure in derrick. MU kelly hose and standpipe. Lay herculite around Z-46, stage well head equipment and 20" surface preventer in cellar area. Spot sub over well and level same. Spot mud pits. Note: Rig accepted @ 09:00 Hrs. 11/16/2005 RU service lines on rig, Start NU Diverter. NU diverter system. Change out 3- 20" air boots and install 20" riser. Sopt cuttings tank and RU steam service to same. Change out pump liners to 5.5", Load pipe shed with 5" drill pipe. Berm cellar area. Ready rig floor to PU drill pipe. Taking on mud Q 15:30 Hrs. PU 5" drill pipe 1x1 building stands to drill surface Function test diverter system, gas alarms. Function test witnessed by John Spaulding, AOGCC & Chris Clemens (WSL) Cont' PU drill pipe and stand back same. Pick up remainder of 5" drill pipe and rack back. Load pipe shed with HWDP, Steam boxes and SLM, PU and stand back 5" HWDP and jar stand. PU BHA to rig floor and steam same. MU 13 1/2" Bit, Motor and 1 stand HWDP PJSM- RU Gyro Data Wire line unit and hang sheave in derrick. Fill hole with mud and check circulating system for leaks. Drill ice out of conductor pipe from 40' to 108' and continue to drill new hole from 108' to 124' Stand back HWDP PU BHA, NM-LDC, NM-Stab, MWD, UBHO, NM-Stab, NM-LDC, XO, & orient same. Run Gyro survey, use two different tools and tattle tail to verify tool accuracy. Drill from 124' to 283' Printed: 1 /16/2006 11:49:00 AM BP EXPLORATION Operations Summary Report Page 2 of 12 Legal Well Name: Z-46 Common Well Name: Z-46 Spud Date: 11/17/2005 Event Name: DRILL+COMPLETE Start: 11/15/2005 End: 12/14/2005 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 1/9/2006 Rig Name: NABOBS 7ES Rig Number: 7ES Date From - To ' Hours Task Code ' NPT ' Phase ~ Description of Operations 11/17/2005 19:00 - 19:30 0.50 DRILL P SURF Circulate 19:30 - 20:30 1.00 DRILL P SURF POH Stand back HWDP & Complete BHA #1 by picking up NM-DC, NM-Stab, NM-DC, Saver Sub, Jars. & RIH to 261' 20:30 - 21:00 0.50 DRILL P SURF Run Gyro and orient BHA to drill. 21:00 - 00:00 3.00 DRILL P SURF Drill from 283' to 607'. Up wt. 80k, DN wt. 75k, Rt. wt. 75k, TO off 2k, TQ On 4k, 500 gpm, 670 psi off Bttm. 800 psi on Bttm. AST=3.03, ART=1.03, ADT=4.06 Run Gyro as needed. 11/18/2005 00:00 - 12:00 12.00 DRILL P SURF Directionally Drill from 607' to 1377'. Up wt. 83k, DN wt. 75k, RT wt. 75k TO-On 6k, TO-Off 3k 550GPM 990 psi Off Bttm. 1190 psi On Bttm. AST= 4.9 hrs. ART= 3.6 hrs. ADT= 8.5 hrs. 12:00 - 22:00 10.00 DRILL P SURF Directionally Drill from 1377 to 2041'. Up wt. 95k, DN wt. 70k, RT wt. 80k TO-On 8k, TO-Off 5.5k 550GPM 1024 psi Off Bttm. 1290 psi On Bttm. AST= 3.87 hrs. ART= 3.28 hrs. ADT= 7.15 hrs. 22:00 - 23:00 1.00 DRILL P SURF Circulate bottoms up x2 until hole cleaned up. Monitor well for 10 min. Mud wt. 9.3 ppg in and out. 23:00 - 00:00 1.00 DRILL P SURF POH with BHA #1. Work through and wipe tight spots at 1187' to 1240' and 1091' to 997' 11119/2005 00:00 - 01:30 1.50 DRILL P SURF POH Work through and wipe tight spots at 1187' to 1240' and 1091' to 997' 01:30 - 02:00 0.50 DRILL P SURF Stand back HWDP & DC's. LD UBHO sub and change bit. 02:00 - 04:00 2.00 DRILL P SURF Adjust motor bend to 1.5 deg & orient BHA. RIH with DC's. & HWDP 04:00 - 05:00 1.00 DRILL P SURF R{H. Work through tight spots @ 1053' & 1097'. Wash last stand to bottom, No Fill on bottom 05:30 - 12:00 6.50 DRILL P SURF Drill from 2041' to 2800' Up wt. 110k, DN wt. 70k, RT wt. 80k TO-On 8-9k, TO-Off 5-6k 650GPM 1610 psi Off Bttm. 1780 psi On Bttm. AST= 2.13 hrs. ART= 1.63 hrs. ADT= 3.76 hrs. 12:00 - 00:00 12.00 DRILL P SURF Drill from 2800' to 4487'. Hydrates encountered @ 3460' Mud wt. cut from 9.6 to 8.6 ppg. Up wt. 128k, DN wt. 83k, RT wt. 98k TO-On 10k, TO-Off 8k 650GPM 1780 psi Off Bttm. 2050 psi On Bttm. AST= .88 hrs. ART= 5.87 hrs. ADT= 6.75 hrs. 11/2012005 00:00 - 02:30 2.50 DRILL P SURF Circulate and condtion mud to 9.6 ppg mud wt. in and out and a 200 vis. coming back. 650 gpm. 1780 psi. 100 RPM, work pipe bottom 10' of hole. Monitor well, Static. 02:30 - 06:00 3.50 DRILL P SURF POH, short trip to 900'. Work and wipe tight hole @ 2014'. Well took proper displacement. 06:00 - 06:30 0.50 DRILL P SURF Clean rig floor. 06:30 - 09:00 2.50 DRILL P SURF RIH. 09:00 - 10:30 1.50 DRILL P SURF Circulate and condtion mud to run casing. mud to 9.5 ppg mud wt. in and out and a 225 vis. coming back. 650 gpm. 1780 psi. 100 RPM, work pipe bottom 10' of hole. Monitor well, Static. 10:30 - 14:30 4.00 DRILL P SURF POH to run casing. No problems on trip out. 14:30 - 17:00 2.50 DRILL P SURF Stand back HWDP & Jar. LD DC's, Stab, MWD, Motor & Bit. 17:00 - 17:30 0.50 DRILL P SURF Clean and clear rig floor of vendors tools. 17:30 - 18:00 0.50 CASE P SURF Make dummy landing run with hanger and landing joint. 18:00 - 19:30 1.50 CASE P SURF RU 10 3/4" casing tools. 19:30 - 20:00 0.50 CASE P SURF PJSM - MU shoe track, Bakerlok up to the landing collar, Printed: 1 /16/2006 11:49:00 AM BP EXPLORATION Operations Summary Report Legal Well Name: Z-46 Common Well Name: Z-46 Event Name: DRILL+COMPLETE Contractor Name: NABOBS ALASKA DRILLING I Rig Name: NABOBS 7ES Date From - To !Hours III Task Code II NPT 11/20/2005 19:30 - 20:00 - 0.50 CASE P 20:00 - 00:00 4.00 CASE P 11 /21 /2005 100:00 - 07:00 I 7.00 I CASE I P 07:00 - 07:30 I 0.501 CASE I P 07:30 - 09:00 I 1.501 CASE I P 09:00 - 13:30 I 4.501 CEMT I P 13:30 - 16:30 I 3.001 CEMT I P 16:30 - 19:30 I 3.001 DIVRTR I P 19:30-21:00 1.50 WHSUR P 21:00 - 00:00 3.00 BOPSU P 11/22/2005 00:00 - 02:30 2.50 BOPSU P 02:30 - 05:00 2.50 BOPSU P 05:00 - 11:00 6.00 BOPSU N SFAL 11:00 - 16:30 5.50 BOPSU P 16:30 - 17:30 1.00 BOPSU P 17:30 - 22:00 4.50 BOPSU P 22:00 - 23:30 1.50 BOPSU P 23:30 - 00:00 0.50 BOPSU P 11/23/2005 00:00 - 06:30 6.50 DRILL P Start: 11 /15/2005 Rig Release: 1/9/2006 Rig Number: 7ES Page 3 of i 2 Spud Date: 11/17/2005 End: 12/14/2005 Phase Description of Operations. SURF circulate through and check floats, Held. SURF Cont' Run 10 3/4" casing, torque connections to 8,400 ft/Ibs. Install bow spring centralizers on first 1ljoints. 49 jts ran. SURF Run 10 3/4" casing to TD, torque connections to 8,400 ft/Ibs. Starting pushing mud away @ 3,300 tt. Break circ on the fly - hole attempt to pack off. CBU on the fly to 3,730 ft, con't RIH, no problems. 107 jts. buried. Circulate last joint to bottom & land casing on hanger. SURF RD Franks fill up tool and blow down top drive. MU plug dropping cement head and RU lines. SURF Stage pumps up to 7 bpm, 505 psi. Hold PJSM for cementing while conditioning mud. Up wt. 190k. DN wt. 90k. SURF Pump 5 bbls water & test lines to 3500 psi. Pump 15 bbls CW-100. 75 bbls Mud Push II @ 10.6 ppg w/ red dye. Drop bottom plug & pump 654 bbls 10.7 ppg Lead Arctic Set Lite III cement. Pump 94 bbls 15.8 ppg Class G Tail cement. Drop top plug & wash up with 5 bbls water followed by 417.5 bbls mud with rig pumps at 8 bpm. Bump plug W/ 500 psi over to 1200 psi. and hold for 5 min. Bleed off pressure & check floats -floats holding. During cement job maintained full returns throughout job. Cement back to surface after 162 bbls into displacement pumped. 260 bbls. cement returns back to surface. CIP @ 13:10 hrs. Reciprocate pipe until Lead Cement was up into the permafrost. SURF LD cement head. Back out landing joint & LD same. Drain riser, flush cement out of diverter equipment and flow line. SURF ND diverter system, wash cement and gravel out of 20" annular and knife valve. SURF NU FMC Wellhead and test metal to metal seal to 1000 psi and hold for 10 min. Held. SURF NU BOPE SURF Cont' NU BOP and riser. SURF RU Test joint and install test plug, fill stack and test against bag to 3500 psi. Bled off. Double stud adaptor flange found to be leaking at base of BOP. Attempt to tighten. No improvement. SURF ND BOP. Seal ring seating area between BOP stack and top side of double stud adaptor flange damaged/washed out. Replace adaptor flange. NU BOP, install pitcher nipple, air up boots. SURF PJSM-Test BOPE and associated equipment as per BP and AOGCC regulations. 250 psi low, 3500 psi High. AOGCC witnessing of test waived by John Spaulding AOGCC. Witnessed by BP WSL Lance Vaughan, Nabors Toolpusher Larry Wurdeman. SURF BD Tines, RD test equipment and install wear bushing. SURF PU and single in hole w/114 jts. of 5" drill pipe. SURF POH standing back 5" drill pipe. SURF PU and single in hole w/5" drill pipe. INT1 PU 5" drill pipe and single in hole. POH & rack in derrick. Printed: 1/16/2006 11:49:00 AM BP EXPLORATION Operations Summary Report Legal Well Name: Z-46 Common Well Name: Z-46 Event Name: DRILL+COMPLETE Start: 11/15/2005 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 1/9/2006 Rig Name: NABOBS 7ES Rig Number: 7ES i i Date From - To Hours Task Code ! NPT ' Phase 11/23/2005 106:30 - 10:30 4.001 DRILL P ~ ~ INTi 10:30 - 14:00 3.50 DRILL P INTi 14:00 - 14:30 0.50 DRILL P INT1 14:30 - 16:30 2.00 DRILL P INTi 16:30 - 18:00 1.50 DRILL P INTi 18:00 - 19:00 1.00 DRILL P INT1 19:00 - 21:00 I 2.001 DRILL 21:00 - 22:00 1.00 DRILL P 22:00 - 22:30 0.50 DRILL P 22:30 - 23:30 1.00 DRILL P 23:30 - 00:00 0.50 DRILL P 11/24/2005 00:00 - 00:30 0.50 EVAL P 00:30 - 12:00 11.50 DRILL P 12:00 - 20:00 I 8.001 DRILL I P 20:00 - 21:30 1.50 DRILL P 21:30 - 00:00 2.50 DRILL P 11/25/2005 00:00 - 00:30 0.50 DRILL P 00:30 - 00:45 0.25 DRILL P 00:45 - 06:00 5.25 DRILL P 06:00 - 00:00 18.00 DRILL P 11/26/2005 (00:00 - 06:00 6.00 ~ DRILL ~ P Page 4 of 12 Spud Date: 11 /17/2005 End: 12/14/2005 Description of Operations PU and RIH w/BSS BHA #3. Surface test MWD per Schlumberger. PU and RIH w 5" drill pipe singles to 2616'. CBU C~3 2616'. 430 gpm, 800 psi. BD top drive. PU 5" drill pipe and continue RIH to 4221'. Slip and cut 95' of drilling line. Service. rig and top drive. RU and test 10-3l4" surface casing to 3500 psi for 30 minutes. BD and RD test. Tag plugs/cement at 4389'. Drill plugs, float collar, and cement to 4472'. 400 gpm, 800 psi, 40 rpm, 10-15K tq. Displace hole to 8.8 ppg LSND mud. Drill shoe at 4475' and 9-7/8" hole to 4507'. Torque irregular. Added 4 drums EP 776. Added MI Clean Screen for control of asphaltenes during Ugnu penetration. CBU 8.8 ppg LSND mud in and out. Pull back to shoe at 4475' and perform LOT to 785 psi for 13.97 ppg EMW. Up wt. 145K, SO wt. 70K, Rot wt. 95K, 400 gpm, 800 psi, 40 rpm, tq. on 10-15K. INTi INTi INT1 INT1 INTi ADT = .56 hrs. RD test lines and BD kill line. Drill 9-7/8" hole w/BSS from 4507' to 6035'. Up wt. 135K, SO wt. 95K, Rot wt. 105, 150 RPM, tq. on 11-14, tq. off 12K, gpm 630, 1540 psi. ECD talc. = 9.27, ECD act. = 9.95. Pump HI-Vis sweep at 6019'. No increase of cuttings. Drill 9-7/8" hole w/BSS from 6035' to 6976'. Up wt. 155K, SO wt. 105K, Rot wt. 123K, 150 RPM, tq. on 14, tq. off 13K, gpm 600, 1540 psi. ECD talc. = 9.47, ECD act. = 9.75. Change all shaker screens due to blinding in the Ugnu. Drill 9-7/8" hole w/BSS from 6976' to 7235'. Up wt. 155K, SO wt. 105K, Rot wt. 123K, 150 RPM, tq. on 14, tq. off 13K, gpm 600, 1540 psi. ECD talc. = 9.47, ECD act. = 9.75. INT1 INT1 INT1 INTi INTi ADT w/ RSS for 24 hrs = 11.9 hrs Drill directionally wlRSS to 7250'. Shakers shut down w/electrical problem. Isolate 1 shaker causing problem. Come back up drilling w/3 shakers keeping up w/600 gpm. Electrician made repairs and all shakers up by 02:00. Drill directionally w/RSS from 7250' to 7824'. Up wt. 175K, SO wt. 105K, Rot wt. 125K, 140 RPM, tq. on 15-17, tq. off 13-14K, gpm 590, 1533 psi. ECD talc. = 9.46, ECD act. = 9.74. Drill directionally w/RSS from 7824' to 9432'. Up wt. 178K, SO wt. 118K, Rot wt. 143K, 140 RPM, tq. on 13, tq. off 10K, gpm 630, 1930 psi. ECD talc. = 9.48, ECD act. = 10.15. INT1 INT1 INT1 INTi ADT f/24 hrs = 16.37, total footage = 2182'. INTi Drill directionally w/RSS from 9432' to 9811'. Up wt. 180K, SO wt. 125K, Rot wt. 140K, 140 RPM, tq. on 13-15, tq. off 10-11K, gpm 631, 2015 psi. ECD talc. = 9.56, ECD act. _ 10.06. Pump 30 bbls. 9.1 ppg Hi-Vis sweep around. Saw 50% Printed: 1/16/2006 71:49:OOAM BP EXPLORATION Operations Summary Report Hours Task 'Code NPT Phase 6.00 DRILL P INTi 10.00 DRILL P INT1 Legal Well Name: Z-46 Common Well Name: Z-46 Spud Date: 11/17/2005 Event Name: DRILL+COMPLETE Start: 11/15/2005 End: 12/14/2005 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 1/9/2006 Rig Name: NABOBS 7ES Rig Number: 7ES Date 'From - To 11 /26/2005 00:00 - 06:00 06:00 - 16:00 16:00 - 18:00 I 2.001 DRILL I N I DPRB I INT1 18:00 - 21:30 I 3.501 DRILL I N I DPRB I INT1 21:30 - 00:00 I 2.501 DRILL I P I I INT1 11/27/2005 100:00 - 06:00 I 6.001 DRILL I P 06:00 - 22:00 I 16.001 DRILL I P 22:00 - 00:00 11 /28/2005 100:00 - 06:00 Page 5 of 12 Description of Operations increase in cuttings across shakers. Drill directionally w/BSS from 9811' to 10757'. Begin to weight up w/spike fluid at 10663', MW by 10757' = 11.0 to max 11.3 PPg• Lost returns. Slow pumps to 120 gpm. Work pipe and build LCM pill, build mud volume, fluid level static w/pumps off. Initial loss 180 bbls. Total loss for incident = 514 bbls. Pump 30 bbls. LCM pill 37.5 ppg w/25 ppg MI Mix-II M and 12.5 ppg MI Mix-II C at 126 gpm, 785 psi. Regain circulation. Stage up to 550 gpm circulating off bottom. No fluid losses. Stage pumps up from 125 gpm to 550 gpm, 2150 psi while decreasing mud wt. to 10.5 ppg. Monitor well. Full returns at 550 gpm, 2150 psi. Continue drilling f/10757' to 10805'. Up wt. = 200K, SO wt = 115K, Rot. wt. = 150K, 550 gpm, 2150 psi, 140 rpm, 17-20K tq. on, 13K tq. off. Drilling w/ no fluid losses. ECDs talc. = 10.63, ECDs act. = 11.16. INTi Drill directionally w/BSS from 10805' to 11100'. String in spike fluid and increase mud wt. to 10.4 ppg. Up wt. 205K, SO wt. 115K, Rot wt. 150K, 140 RPM, tq. on 15-17K, tq. off 13-15K, gpm 596, 2180 psi. ECD talc. = 10.65, ECD act. = 11.21. INTi Drill directionally w/BSS from 11100' to 11606'. Up wt. 215K, SO wt. 125K, Rot wt. 155K, 150 RPM, tq. on 14K, tq. off 12K, gpm 600, 2480 psi. ECD talc. = 11.21, ECD act. = 11.25. ROPs dropped to 100'/hr or less after drilling stringer identified by geo as chert at 10802'. Similar stringer was drilled at 11606' and ROP dropped to 50'/hr or less. At 22:00 ROP had dropped to 15'-20'/hr. Rig team made decision to POH and check bit. 2.001 DRILL I P I I INTi 6.001 DRILL I P I I INT1 06:00 - 07:00 1.00 DRILL P INTi 07:00 - 07:30 0.50 DRILL P INTi 07:30 - 10:00 2.50 DRILL P INTi 10:00 - 13:00 3.00 DRILL P INT1 13:00 - 13:30 0.50 DRILL P INT1 13:30 - 14:00 0.50 DRILL P INTi 14:00 - 18:30 4.50 DRILL P INTi 18:30 - 19:00 0.50 DRILL P INT1 19:00 - 00:00 I 5.001 DRILL I P I I INTi ADT for 24 hrs. = 17.14. Footage = 801. Cumulative ROP for 24 hrs = 46.7'/hr. Monitor well-static. Pull 5 stands. Pump dry job. BD topdrive. Up wt. 215, SO wt. 125. POH to 9245'. Mud wt. in and out 10.4 PP9• POH. Mud wt. in and out 10.4 ppg. Pull over and some swabbing in Ugnu (/5733' to 5451'. Worked through, did not pump out. Pulled free above 5423' (upper ghost reamer lowest contact point). Overall hole condition good coming out. Lay down 111 jts. of 5" drill pipe. LD BHA. Download MWD, function test BOP, clean rig floor. MU new bit. PU BHA. Change out stabilizer. Surface test power unit. Change out jars. PU 5" drill pipe and single in hole. RIH hole w/stands to shoe at 4475'. Service top drive and rig. RIH to 11511'. Up wt. 220K, SO = 115K. Ream from 11511' to bottom at 11606'. 500 gpm, 2650 psi, 140 rpm, tq. 12K. Drill directionally w/BSS from 11606' to 11890'. Up wt = 210K, SO wt. = 125K, Rot wt. = 158K, 600 gpm, 2880 psi, 140 rpm, 14K tq. off, tq. on 17K. Circulate 10.8 ppg Glydrill mud system Printed: 1/16/2006 11:49:00 AM BP EXPLORATION Operations Summary Report Page 6 of 12 Legal Well Name: Z-46 Common Well Name: Z-46 Spud Date: 11/17/2005 Event Name: DRILL+COMPLETE Start: 11/15/2005 End: 12/14/2005 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 1/9/2006 Rig Name: NABOBS 7ES Rig Number: 7ES Date From - To ,Hours T - NPT I! Phase Description of Operations Task Code' 11/28/2005 19:00 - 00:00 5.00 DRILL P INT1 to well at 11701' prior to prognosed HRZ penetration depth of -12239'. 11/29/2005 100:00 - 06:00 6.001 DRILL I P 06:00 - 15:00 9.00 DRILL P 15:00 - 15:30 0.50 DRILL P 15:30 - 16:00 I 0.501 DRILL I P 16:00 - 18:30 I 2.501 DRILL I P 18:30 - 00:00 i 5.50 ~ DRILL ~ P 11/30/2005 ~ 00:00 - 02:00 ~ 2.00 ~ DRILL ~ P 02:00 - 03:30 ~ 1.50 ~ DRILL ~ P 03:30 - 06:00 2.50 ~ DRILL ~ P 06:00 - 20:00 I 14.001 DRILL I P ADT 3.05 hrs., footage = 284, ROP = 93.11 f.Uhr. INT1 Drill directionally w/BSS from 11890' to 12063'. Up wt = 215K, SO wt. = 125K, Rot wt. = 158K, 600 gpm, 3350 psi, 140 rpm, 13K tq. off, tq. on 17-19K. ECDs calc. = 11.46ppg vs. ECDs act. = 11.75ppg. INTi Drill directionally from 12063' to 12556'. INT1 String packed off momentarily at 12556', ECD spiked to 15.0 ppg. Lost returns. No excessive torque or overpull. Backed off pumps to 120gpm, 650 psi. INT1 Pump out of hole to 12365', 120 gpm, 650 psi. Regain circulation at 120 gpm. Stage up to 450 gpm. Build and pump LCM sweep at 600 gpm. INT1 Circulate LCM sweep around and stage stands back to bottom at 12556'. 450 gpm, 120 rpm. INTi Drilling from 12556' to 12935'. No fluid losses. Weight up mud to 11.0 ppg. at 615 gpm, 2950 psi, 140 rpm, 17K tq. on, Up wt. 230K, SO wt. 135K, Rot wt. 168K. ADT for 24 hrs. = 12.94. Footage = 1045. ROP for 24 hrs. _ 80.75 fUhr. Loss total 425 bbls for the day INTi Drill directionally from 12935' to 13211'. ECDs spike to 13.42 ppg actual vs. 11.2 ppg calculated. INT1 CBU to clean up wellbore. 450 gpm, 1893 psi, 40 rpm, tq. off 13K. INT1 Drill directionally from 13211' to 13401'. WOB 25-35, gpm 607, psi on 3190, psi off 3120, tq. on 17-18, tq. off 12-14, Up wt. 238K, SO wt. 140, Rot wt. 173K, rpm 140. ECDs: calculated = 11.56 ppg. vs. actual = 12.06 ppg INT1 Drill directionally from 13401' to 13789'. WOB 20-40, gpm 582, psi on 3380, psi off 3342, tq. on 17-18, tq. off 14-15, Up wt. 248K, SO wt. 150, Rot wt. 178K, rpm 140. ECDs 13789': calculated = 11.57 ppg. vs. actual = 11.87 ppg. ADT for 24 hrs. = 12.06. Footage = 854. ROP for 24 hrs. _ 70.8 ft/hr. Mud loss to wellbore total = 40 bbls for 24 hrs. 13125'-13219' control drill 150'/hr to lower ECDs. 13219' partial returns, ROP 143 ft/hr. w/ECDs 11.56 calc. vs. actual 12.35. Pumped weighted sweep (12.2 ppg) at 13262' with a 25% increase in cuttings. 13315' ROP 141 Whr., pump weighted sweep 604 gpm, 3130 psi. 13408' ROP dropped to 56 fUhr. Sweep back w/25% increase across shakers. 13580' ROP 51 ftlhr, pump nut plug and screen clean 580 gpm, 3360 psi. 13597' ROP 51ft/hr., plugged jet, pressure on bottom went from 3100 psi to 3400 psi. 13693' ROP 34 fUhr, pump nut plug Printed: 1/16/2006 11:49:00 AM BP EXPLORATION Operations Summary Report Page 7 of 12 Legal Well Common W Event Nam Contractor Rig Name: Date Name: ell Name: e: Name: From - To !, Z-46 Z-46 DRILL+C NABOR NABOR Hours OMPLE S ALASK S 7ES Task TE A DRI Code I, LING NPT I Start I Rig Rig Phase Spud Date: 11/17/2005 : 11/15/2005 End: 12/14/2005 Release: 1/9/2006 Number: 7ES Description of Operations 11/30/2005 06:00 - 20:00 14.00 DRILL P INTi and clean screen sweep, 582 gpm, 3380 psi. 13787' ROP 24ft/hr, spotted a 30 bbl., 5 Ibs/bbl, sapp pill around the bit. Soaked pill around bit. Rotated and slow circulated. Chased w/nut plug at 582 gpm, 3380 psi, w/temporary increase in ROP to 75 ft/hr. Dropped back to 34 Whr. 20:00 - 21:00 1.00 DRILL P INTi CBU. 582 gpm, 3380 psi, rotate 140 rpm. 21:00 - 21:30 0.50 DRILL P INT1 Monitor well. Well breathing, observed 2.4 bpm PVT gain which dropped to static w/24 bbls returned from well bore. Mud weight in and out = 11.1 ppg. 21:30 - 22:30 1.00 DRILL P INT1 POH f/13789' to 13123'. Well began swabbing. 22:30 - 00:00 1.50 DRILL P INT1 MU top drive and pump out of hole to 12079'. 12/1/2005 00:00 - 09:30 9.50 DRILL P INT1 POH from 12079' to shoe at 4475' pumping out and laying down drill pipe. 09:30 - 10:30 1.00 DRILL P INT1 Slip and cut drilling line. Service top drive and rig. 10:30 - 19:30 9.00 DRILL P INT1 Continue pumping out of hole and laying down drill pipe. 19:30 - 21:00 1.50 DRILL P INT1 POH and stand back HWDP, 6-3/4" drill collars, break bit. Monitor well--static. Able to pull BHA w/o pumping / no swabbing. Note: The upper stabs (above MWD) were packed solid. Bit & lower stab partially packed off - 1 nozzle packed solid. Bit looked good. 21:00 - 23:00 2.00 DRILL P INT1 LD BHA, stabilizers, MWD, and rotary steerable unit. Clean floor. Note: Function tested BOPs. 23:00 - 00:00 1.00 DRILL P INT1 PU new RSS components, MU new RS191 H+ bit, RIH, shallow test RSS. 12/2/2005 00:00 - 02:00 2.00 DRILL P INT1 Continue PU RSS BHA #5. PJSM w/all hands before handling nukes. PU and RIH w/BHA #5. Shallow test MWD assembly. 02:00 - 05:30 3.50 DRILL P INT1 RIH w/HWDP from derrick. PU and RIH w/102 jts. 5" drill pipe. 05:30 - 07:30 2.00 DRILL P lNT1 R1H w/stands of 5" drill pipe to 7085'. 07:30 - 08:00 0.50 DRILL N RREP INT1 Trouble shoot electrical malfunction w/top drive. 08:00 - 10:30 2.50 DRILL P INT1 POH above 10-3/4" shoe to 4243'. 10:30 - 11:30 1.00 DRILL P INTi PU 10-3/4" RTTS Storm packer, RIH to 60' and hang off drill pipe. POH w/2 jts. drill pipe and LD running tool. Test 1000 psi. OK. 11:30 - 12:00 0.50 BOPSU P INT1 Pull wear bushing. 12:00 - 16:00 4.00 BOPSU P INT1 Test BOPs to 250 psi low, 3500 psi high. Test witnessed by AOGCC rep. Lou Grimaldi and BP WSL Lance Vaughan. No failures. 16:00 - 17:00 1.00 BOPSU P INT1 RD test equipment, BD lines, pull test plug, install wear busing. 17:00 - 18:00 1.00 BOPSU P INT1 PU two jts of drill pipe. RIH w/running tool and retrieve RTTS storm packer. 18:00 - 21:00 3.00 DRILL P INT1 RIH f/4244' to 9073'. 21:00 - 00:00 3.00 DRILL P INTi MAD Pass from Schrader/Ugnu 9040' up to 8124'. 265 gpm, 720 psi, 50 rpm, tq. 10K, 540 ft./hr. 12/3/2005 00:00 - 04:00 4.00 DRILL P INT1 MAD Pass Ugnu/Schrader from 8124' to 7000'. 04:00 - 07:00 3.00 DRILL P INT1 RIH to 12951'. 07:00 - 08:00 1.00 DRILL P INT1 MAD Pass Kuparuk f/12880' to 12700'. 300 ft./hr., 250 gpm, 930 psi 50 rpm tq. 14K. 08:00 - 08:30 0.50 DRILL P INT1 RIH to 13700'. Precaution wash down to 13789'. No fill. 08:30 - 21:45 13.25 DRILL P INT1 Drill directionally w/RSS BHA # 5 f/13789' to 14657'. ECDs j spike f/12.0 ppg to 13.4 ppg. Printed: 1/16/2006 11:49:00 AM BP EXPLORATION Operations Summary Report Page 8 of 12 Legal Well Name: Z-46 Common Well Name: Z-46 Spud Date: 11/17/2005 Event Name: DRILL+COMPLETE Start: 11/15/2005 End: 12/14/2005 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 1/9/2006 Rig Name: NABOBS 7ES Rig Number: 7ES Task .Code NPT Phase Description of Operations Date -From - To_ Hours _ _, _~ ' _ - - - - 12/3/2005 ~ 21:45 - 23:00 ( 1.25 ~ DRILL ~ P 23:00 - 00:00 I 1.001 DRILL I P 12/4/2005 100:00 - 06:00 I 6.001 DRILL I P 06:00 - 08:30 I 2.501 DRILL I P INT1 CIRC, pump 35 bbls Hi-Vis sweep, CBU. Stage pumps up to 600 gpm, 3150 psi, 140 rpm, tq. off 17K. Saw 25% increase in cutting with sweep at shakers. INTi Drill directionally (/14657' to 14703'. Up wt. 285K, SO wt 150K, Rot. wt. 195K, 140 rpm, tq. on 20-21 K, tq. off 17K, 600 gpm, 3200 psi. ECDs calc. 11.59 ppg vs. actual 11.94 ppg. Mud wt. 11.1 ppg. Note: Per geo--cross fault #5 and penetrate Kingak JD at 14690' MD, 8377' TVD. ADT for 24 hrs = 8.4 Footage = 914. ROP for 24 hrs = 109 ft/hr. Mud losses for 24 hrs = 513 bbls. Well breathing during connections. INT1 INT1 08:30 - 12:00 3.50 DRILL P INT1 12:00 - 14:00 2.00 DRILL N DFAL INTi 14:00 - 14:45 0.75 DRILL N DFAL INT1 14:45 - 16:45 2.00 DRILL P INT1 16:45 - 17:00 I 0.251 DRILL I P 17:00 - 18:30 1.50 DRILL P 18:30 - 19:30 1.00 DRILL P 19:30 - 00:00 4.50 DRILL P 12/5/2005 100:00 - 01:30 I 1.501 DRILL I P 01:30 - 12:00 12:00 - 15:00 15:00 - 15:30 15:30 - 18:30 18:30 - 21:45 21:45 - 22:15 22:15 - 00:00 10.501 DRILL I P 3.00 DRILL P 0.50 DRILL P 3.00 DRILL P 3.25 DRILL P 0.50 BOPSU P 1.75 BOPSU P INTi INT1 INTi INT1 INTi INT1 INT1 INTi INT1 INT1 INT1 INT1 Drill directionally f/ 14703' to 15100'. Up wt. 290K, SO wt 150K, Rot. wt. 200K, 140 rpm, tq. on 20-22K, tq. off 17-18K, 600 gpm, 3320 psi. ECDs calc. 11.59 ppg vs. actual 12.05 ppg Drill f115100' to 15260' and per geo CBU for samples, 600 gpm, 3340 psi. Drill f/15260' to 15270' and per geo CBU for samples, 600 gpm, 3340 psi. Saw 700 psi loss in pump pressure. POH pumping out due to swabbing f/15280' to 14025' and find the washout just below tool jt. LD middle jt. in stand # 141. RIH f/14025' to 15280'. Drill directionally f/15280' to 15292' and per geo CBU for samples at 600 gpm, 3340 psi. Drill directionally f/15292' and per geo TD 9-7/8" intermediate section at 15294' in top of Sag River. Up wt. 310K, SO wt 150K, Rot. wt. 200K, 140 rpm, tq. on 20-22K, tq. off 19-20K, 600 gpm, 3300 psi. Short trip to last bit trip point at 13700'. RIH f/13700' to 15294'. CBU x 2.5 conditioning hole per mud engineer. Pump Nut Plug sweep to clear reamers and Hi-Vis sweep, 475 gpm 2200 psi, 140 rpm, tq. off 20K. See some shale returns across shaker, per geo typical Miluveach/Kingak cuttings. Shale not running. Mud wt. 11.1 ppg in and out. POH pumping drill pipe displacement x 2 and stand back 10. Monitor well. Slight breathing. Mud wt. in and out = 11.1 ppg. Blow down TD. Pump dry job. POH f/14221' to 6400' laying down 5" drill pipe. BD. POH f/6400' to BHA laying down drill pipe. RIH w/11 stands drill pipe from derrick. POH laying down remaining 33 jts of drill pipe. PJSM for handling nukes, LD BHA, clean floor. Pull wear bushing, set test plug. Change out upper and lower pipe rams to 7-5/8". Printed: 7/1672006 17:49:00 AM BP EXPLORATION Operations Summary Report Page 9 of 12 Legal Well Name: Z-46 Common Well Name: Z-46 Spud Date: 11/17/2005 Event Name: DRILL+COMPLETE Start: 11/15/2005 End: 12/14/2005 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 1/9/2006 Rig Name: NABORS 7ES Rig Number: 7ES Date From - To Hours Task I Code NPT ', Phase I Description of Operations 12/6/2005 00:00 - 02:00 2.00 BOPSU P INTi Continue changing 7-5/8" rams. RU and test ram doors to 3500 psi and put on chart. RD test equip & pull test plug. 02:00 - 04:00 2.00 CASE P INT1 RU 7-5/8" casing running equipment. RU 250 ton Varco air slips and spider. 04:00 - 11:00 7.00 CASE P INT1 RIH w/7-5/8" casing. Fill pipe and check floats. RIH filling ea. jt. w/Franks fill up tool. Run 111 Jts to 4475' 11:00 - 12:30 1.50 CASE P INTi Circulate 1.5 casing volume staging pumps up to 6 bpm 230 psi. 12:30 - 00:00 11.50 CASE P INT1 Cont RIH w/ 7-5/8" casing filling each joint, break circulation every 15 jts. on the fly. Slow running speed, Q 8500' pushing mud away, break circulation on the fly every 5 jts. total 245 jts. ran 9895' C~3 00:00 hrs. 232 bbls mud loss while running. 12/7/2005 00:00 - 13:00 13.00 CASE P INT1 Cont' RIH with 7-5/8" casing breaking circulation on the fly to 12000' THRZ and cont' RIH filling every joint. Circulate last joint and tag bottom C~ 15294', Ran total 378 jts. 13:00 - 13:30 0.50 CASE P INT1 LD Franks Fill up tool and MU Plug dropping cement head. 13:30 - 15:00 1.50 CASE INT1 Break circulation and stage pumps up to 3 bpm 650 psi with partial retruns. 1.5 bpm loss rate. 15:00 - 21:30 6.50 CEMT P INTi PJSM -Load head with bottom plug. Test lines to 4000. Clear water from lines through Tee and pump 50 bbls mud push C 11.5 ppg. Drop bottom plug and load cement head with top plug. Pump 223 bbls. Arctic Lite lead cement @ 12.5 ppg. Pump 75 bbls tail cement @ 15.8 ppg. Drop top plug and kick out with 1 bbl cement. Clear cement from lines through Tee. Displace cement with mud w/rig pumps until plugs bump at 698 bbls. Pressure to 1700 psi and hold 5 minutes. Bleed off pressure and check floats. Floats held. Load head with closing plug for 2nd stage cement job. CIP Ca? 21:05 hrs. 15 to 20°1° returns during cement job. 21:30 - 00:00 2.50 CEMT P INT1 Shear open ES Cementer with 3500 psi. Circulate and condition mud C~ 6 bpm 550 psi while waiting on 500 psi compressive strength on 1st stage cement job. Full Returns while circulating. 12/8/2005 00:00 - 02:00 2.00 CEMT P INT1 Circulate and condition mud for second stage cement job with full returns. 02:00 - 04:30 2.50 CEMT P INT1 PJSM -Pump 40 bbls CW-100. Pump 50 bbls mud push C~3 11.5 ppg. Pump 147 bbls. Class G cement @ 15.8 ppg. Drop closing plug and kick out with 5 bbl water. Displace cement with mud w/rig pumps until plugs bump at 435 bbls. Pressure to i 800 psi to close ES cementer and hold pressure for 5 min. Bleed off pressure and comfirm that cementer closed. CIP C~3 04:30 hrs. 100% returns during cement job. 04:30 - 05:00 0.50 CEMT P INTi RD cement equipment, evacuate mud from casing joint. 05:00 - 06:00 1.00 BOPSU P INT1 ND BOP 06:00 - 08:00 2.00 BOPSU P INTi Install emergency slips and set with 180k tension. Cut 7-5/8" casing joint with Cameron pneumatic cutter and LD same. Install FMC packoff. 08:00 - 09:30 1.50 BOPSU P INT1 NU BOPE and Test packoff to 4090 psi. and hold for 15 min. 80% of 7-5/8" collapse, Test held. 09:30 - 11:30 2.00 BOPSU P INT1 Change top rams to 3-1/2" x 6" and bottom rams to 2-7/8" x 5". RU secondary kill line to annulus. Change out top drive quill to I 4". Printed: 1/16/2006 11:49:00 AM BP EXPLORATION Page 10 of 12 Operations Summary Report Legal Well Common W Event Nam Contractor Rig Name: Date Name: ell Name: Z e: Name: From - To . Z-46 -46 DRILL+C NABOB NABOB Hours OMPLE S ALASK S 7ES Task TE A DRI Code i LING NPT Start I Rig Rig I' Phase Spud Date: 11/17/2005 : 11/15/2005 End: 12/14/2005 Release: 1/9/2006 Number: 7ES Description of Operations 12!8!2005 11:30 - 12:00 0.50 BOPSU P INT1 Service Top Drive. 12:00 - 13:30 1.50 BOPSU P INT1 RU Test equipment and install test plug. NOTE: Establish OA Infectivity down the 10-3/4" x 7-5/8" annulus, LOT pressure 200 psi with 10.8 ppg mud EMW = 12.12 ppg and clear annulus with 188 bbls mud @ 5 bpm 560 psi. RU Hot Oil and pump 110 bbls diesel freeze protect. Ops done out of critical path. 13:30 - 17:00 3.50 BOPSU P INT1 Test BOPE and related equipment to 250 psi low and 3500 psi high as per BP and AOGCC regulations. Witness of test waived by Jeff Jones AOGCC. Test witnessed by WSL - Duncan Ferguson, Nabors Toolpusher, RayBarnes. 17:00 - 17:30 0.50 BOPSU P INT1 RD test equipment and blow down all lines. Install wear bushing. 17:30 - 21:00 3.50 DRILL P PROD1 RIH PU 66 singles 4" drill pipe 1x1 and POH racking back in derrick. 21:00 - 23:00 2.00 DRILL P PROD1 MU BHA #6. - 6-3/4" Bit (1.37 deg ShortPak motor (Bypass Sub / NM STB / NM LDC / MW D / 3 - NM Flex DC's /Pump Out Sub /Jar. and orient same. 23:00 - 00:00 1.00 DRILL P ~ PROD1 RIH picking singles of drill pipe 1 x 1. shallow test MWD @ 675'. 12/9/2005 00:00 - 08:00 8.00 DRILL P PRODi RIH picking up singles of drill pipe 1 x 1. tag ES cementer @ 9588' 08:00 - 10:30 2.50 DRILL P PROD1 Drill plug and cementer with 3-5k WOB, 40 RPM, 10K Torque, 235 GPM, 1820 PSI. 10:30 - 11:30 1.00 DRILL P PROD1 Wash from 9588' to 9800' pushing junk from ES Cementer and cleaning out cement stringers. i 1:30 - 12:00 0.50 BOPSU P PROD1 RU and Test casing to 2000 psi and hold for 5 min. Held. RD test equipment. 12:00 - 17:00 5.00 DRILL P PROD1 RIH picking up singles of drill pipe 1 x 1 to 14585'. 17:00 - 18:30 1.50 DRILL N RREP PROD1 Repair brake on top drive. 18:30 - 19:00 0.50 DRILL P PROD1 Service top drive and crown. 19:00 - 20:00 i.00 DRILL P PROD1 Slip and cut 60' of drilling line. 20:00 - 21:00 1.00 DRILL P PRODi RIH picking up drill pipe 1 x 1 to 15090' 21:00 - 22:00 1.00 BOPSU P PROD1 RU test equipment and pressure test 7-5/8" casing to 3500 psi and hold for 30 min. Held. RD test equipment. 22:00 - 23:00 1.00 DRILL P PROD1 RIH and wash down from 15090' cement at 15196' 23:00 - 00:00 1.00 DRILL P PROD1 Drill cement from 15196' to baffle adapter at 15211' cont' drill cement down to 15232'. UP WT-275k, DN WT-80k, RT WT-135k, TO-17.5k On & Off Bttm., 250 GPM, 2600 PSI. 12/10/2005 00:00 - 01:30 1.50 DRILL P PROD1 Drill cement from 15232', down to float collar at 15251' and cement down to i 5290'. UP WT-200k, DN WT-80k, RT WT-130k, TO-17.5k On & Off Bttm., 250 GPM, 2600 PSI. Note: started displacement of mud system to Flo Pro NT after drilling float collar. 01:30 - 03:00 1.50 DRILL P PROD1 Pump 50 bbl water, 40 bbl High Vis spacer wJ 10°I° Steel Lube, followed by 621 bbl. 9.1 ppg Flo-Pro NT mud to surface. Obtain SPR's 03:00 - 03:30 0.50 DRILL P PRODi Drill remaining cement from 15290' and shoe at 15293' clean out rat hole to 15294' 03:30 - 04:00 0.50 DRILL P PROD1 Drill new hole from 15294' to 15314' UP WT-195k, DN WT-145k, RT WT-155k, TO-7k on & 5k Off Printed: 1/16/2006 11:49:00 AM BP EXPLORATION Page 11 of 12 Operations Summary Report Legal Well Name: Z-46 Common Well Name: Z-46 Spud Date: 11/17/2005 Event Name: DRILL+COMPLETE Start: 11/15/2005 End: 12/14/2005 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 1/9/2006 Rig Name: NABOBS 7ES Rig Number: 7ES Date I From - To I Hours Task Code NPT Phase ~ Description of Operations 12!10!2005 03:30 - 04:00 0.50 DRILL P PROD1 Bttm., 280 GPM, 2800 PSI. off Bttm. 3000 PSI On Bttm. 04:00 - 04:30 0.50 DRILL P PRODi Circulate and condition mud. 04:30 - 05:30 1.00 DRILL P PROD1 RU and perform FIT to 11 ppg EMW. 9.1 ppg test mud weigt, 870 psi test pressure. 8800' TVD. RD test equipment and blow down lines. 05:30 - 12:00 6.50 DRILL ', P PROD1 Drill from 15314' to 15352' Having trouble transfering torque and weight to bit, Pumped 30 bbl Steel Lub Sweep to reduce casing drag. UP WT-200k, DN WT-135k, RT WT-155k, TO-7k on & 5k Off Bttm, 280 GPM, 2800 PSI. off Bttm. 3000 PSI On Bttm. ART=.07 / AST=2.87 /ADT=2.94 12:00 - 00:00 12.00 DRILL P PROD1 Drill from 15352' to 15430' UP WT-200k, DN WT-135k, RT WT-155k, TO-10k on & 8k Off Bttm., 320 GPM, 2900 PSI. off Bttm. 3000 PSI On Bttm. ART=O / AST=4.18 /ADT=4.18 12/11/2005 00:00 - 12:00 12.00 DRILL P PROD1 Drill from 15430' to 15476' 100% Slide UP WT-200k, DN WT-135k, RT WT-155k, 320 GPM, 3000 psi. off Bttm. 3100 psi on Bttm. ART=O / AST=4.02 /ADT=4.02 NOTE: Shublik drilling is very slow with the PDC bit, an adverage of 5 fUhr sliding and 10 fVhr rotating. Compounded by poor weight transfer which creates two problems, PDC bit creates numerous micro ledges and with 15,000' of metal to metal drag, the weight slumps off causing stalls and having to re-orient every three feet. 12:00 - 00:00 12.00 DRILL P PROD1 Drill from 15476' to 15551' UP WT-200k, DN WT-135k, RT WT-160k, TO On 9k, TO Off 10.5k, 320 GPM, 3000 psi. off Bttm. 3100 psi on Bttm. ART=.48 / AST=3.75 /ADT=4.23 12/12/2005 00:00 - 12:00 12.00 DRILL P PROD1 Drill from 15551' to 15637' UP WT-205k, DN WT-135k, RT WT-160k, TO Off 7k, 330 GPM, 3000 psi. off Bttm. 3110 psi on Bttm. ART=O / AST=3.7 /ADT=3.7 12:00 - 16:00 4.00 DRILL P PROD1 Drill from 15637' to 15828' Top of the Sadlerochit formation at 15,608'. Logs indicate the sands are wet. UP WT-205k, DN WT-135k, RT WT-160k, TO Off 8k, TQ ON 11 k, 330 GPM, 2875 psi. off Bttm. 3000 psi on Bttm. ART=1.68 / AST=1.22 /ADT=2.9 16:00 - 17:30 1.50 DRILL P PROD1 Circulate bottoms up, 330 gpm @ 2725 psi, 100 rpm's. Monitor Well prior to POH Note: Mud Wt. in and out 9.2 ppg. 17:30 - 18:00 0.50 DRILL P PROD1 POH to 7-5/8" shoe C 15293' 18:00 - 18:30 0.50 DRILL P PROD1 Monitor Well at shoe. Well Static. Pump dry job. 18:30 - 00:00 5.50 DRILL P PROD1 POH. Well taking proper displacment on hole fill. Dropped ball and opened circ sub at 7576', pipe pulling wet. cont' POH to 3022' 12/13/2005 00:00 - 02:00 2.00 DRILL P PROD1 Cont' POH, Monitor well at BHA, LD 63 joints 4" Drill pipe. 02:00 - 03:00 1.00 DRILL P PROD1 LD BHA #6 Function test rams. 03:00 - 03:30 0.50 DRILL P PROD1 Clean and clear rig floor of vendors tools. 03:30 - 04:00 0.50 STCTPL P PROD1 PJSM with Halliburton Rep on making up 7-5/8" EZSV. PU EZSV to rig floor. 04:00 - 11:00 7.00 STCTPL P , PROD1 MU EZSV & RIH @ 1 min. per stand with 7-5/8" EZSV on 4" Printed: 1 /16/2006 1 1:49:00 AM BP EXPLORATION Page 12 of 12 Operations Summary Report Legal Well Name: Z-46 Common Well Name: Z-46 Spud Date: 11/17/2005 Event Name: DRILL+COMPLETE Start: 11/15/2005 End: 12/14/2005 Contractor Name: NABOBS ALASKA DRI LLING I Rig Release: 1/9/2006 Rig Name: NABOBS 7ES Rig Number: 7ES Date From - To Hours I Task ~ Code NPT Phase Description of Operations 12/13/2005 04:00 - 11:00 7.00 STCTPL P PROD1 Drill pipe. 11:00 - 12:00 1.00 STCTPL P PROD1 Establish circulation at 1.5 bpm 440 psi. shut down pumps and set EZSV as per Halliburton Rep at 15098' 12:00 - 13:00 1.00 STCTPL P PROD1 RU cementing equipment and Perform infectivity rate at 1 bpm with 1750 psi w/ 5 bbls. Un-sting from from retainer. 13:00 - 15:00 2.00 STCTPL P PROD1 Batch mix and pump as follows: 10 bbls water 39 bbls class G cement C~3 15.8 ppg followed by 3 bbls water. Switch over to rig and displace cement to retainer, sting in and squeeze 10 bbl water, 35 bbls cement below retainer, final pressure 2350 psi at 1.25 bpm. Un-sting from retainer and lay 4 bbls cement on top of retainer. POH 2 stands @ 14876'. 15:00 - 16:30 1.50 STCTPL P PROD1 Circulate bottoms up at 340 gpm, 2090 psi. Trace of contaminated mud seen. at bottoms up. Monitor well and pump dry job. Note: Mud weight 9.3 ppg in and out. 16:30 - 18:30 2.00 STCTPL P PROD1 POH racking back 55 stands of 4" drill pipe. 18:30 - 00:00 5.50 STCTPL P PRODi POH laying down drill pipe. 12/14/2005 00:00 - 02:30 2.50 STCTPL P PROD1 Cont' POH LD 4" drill pipe and EZSV running tool 02:30 - 03:00 0.50 STCTPL P PROD1 Test Casing to 3500 psi and record on chart for 5 min. Held. Blow down lines. Clean and clear rig floor of vendors tools. 03:00 - 03:30 0.50 STCTPL P PROD1 PJSM with SWS 03:30 - 05:00 1.50 STCTPL P PROD1 PU logging tools to rig floor & RU E-Line equipment. toad pipe shed with logging tools. 05:00 - 06:00 1.00 STCTPL N SFAL PROD1 MU USIT / GR /CCL -Problem with USIT 06:00 - 16:00 10.00 STCTPL P PROD1 Run #1 USIT / GR /CCL, RIH w/ same to 14876' ELM and log out of hole. LD Logging tools. Top of the cement @ 4970' 16:00 - 19:00 3.00 STCTPL P PRODi MU 6.5" Gauge Ring /Junk Basket &RIH to 5000' POH and LD same. Printed: 1/16/2006 11:49:00 AM BP EXPLORATION Operations Summary Report Legal Well Name: Z-46 Common Well Name: Z-46 Event Name: REENTER+COMPLETE Start: 12/13/2005 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 1/9/2006 Rig Name: NABOBS 7ES Rig Number: 7ES Date From - To I Hours Task 'Code NPT Phase 12/14/2005 19:00 - 21:00 21:00 - 21:30 21:30 - 22:00 22:00 - 00:00 12/15/2005 00:00 - 01:00 01:00 - 03:00 03:00 - 04:00 04:00 - 04:30 04:30 - 06:00 06:00 - 06:30 06:30 - 09:30 09:30 - 11:00 11:00 - 11:30 11:30 - 12:30 12:30 - 13:00 13:00 - 13:30 13:30 - 14:00 14:00 - 15:00 15:00 - 15:30 15:30 - 16:00 16:00 - 16:30 16:30 - 17:00 17:00 - 22:30 12/16/2005 22:30 - 23:30 23:30 - 00:00 00:00 - 00:30 00:30 - 01:00 01:00 - 01:30 01:30 - 02:00 02:00 - 04:00 Page 1 of 12 Spud Date: 11 /17/2005 End: 1 /11 /2006 Description of Operations 2.00 DHB P DECOMP MU 7-5/8" EZSV, RIH Correlate and set @ 4650' POH & RD SWS. 0.50 STCTPL P DECOMP RU & Test Casing to 3500 psi and record on chart for 5 min. Held. Blow down lines. 0.50 STCTPL P DECOMP PJSM with Baker Fishing Rep & MU BHA #1, 7-5/8" Csg Cutter / Stablizer / XO 2.00 STCTPL P DECOMP RIH to 3070' 1.00 STCTPL P DECOMP Cont' RIH with 7-5/8" cutter to 4500' 2.00 STCTPL P DECOMP Slip and Cut new reel 1200' of drilling line. 1.00 STCTPL P DECOMP RIH and tag EZSV @ 4650' Lay 5 bbl. 18 ppg balanced pill on bottom and POH to place cutter on depth at 4575'. 0.50 STCTPL P DECOMP Cut casing @ 4575'. 15 min observed 280 psi loss. PU 2' and re-establish parameters. Slack off and observe 280 psi loss as knifes entered cut. Approx, 1' seperation. UP WT-85k, DN WT-70k, RT WT-70k, TO-2k 169 gpm, 600 psi. 1.50 STCTPL P DECOMP Displace diesel freeze protect out of 10-3/4" x 7-5/8" OA. 3 bpm 700 psi. with 9.2 ppg mud. Note: Mud weight 9.2 ppg in & out. 0.50 STCTPL P DECOMP Monitor well, Static. Blow down Top Drive and choke manifold. 3.00 STCTPL P DECOMP POH, LD 7-5/8" casing cutter. Clean and clear rig floor of vendors tools 1.50 BOPSU P DECOMP Pull wear bushing and install test plug. Change out top set of rams to 7-5/8" 0.50 BOPSU P DECOMP Fill stack with water and test bonnets to 3500 psi. Held. Pull test plug and LD test joint. 1.00 BOPSU P DECOMP ND BOP 0.50 WHSUR P DECOMP Remove 7-5/8" packoff 0.50 WHSUR P DECOMP Tack weld emergency slip segments to 7-5/8" casing stub to secure for pulling. 0.50 WHSUR P DECOMP Install 7-5/8" packoff. 1.00 BOPSU P DECOMP NU BOP 0.50 WHSUR P DECOMP Test Packoff and casing head flange to 3000 psi. Held. 0.50 STCTPL P DECOMP MU 7-5/8" spear assembly and RIH and attempt work spear into 7-5/8" casing, POH and recovered 7-5/8" packoff. Attempt to engage 7 5/8" casing, spear not entering casing. 0.50 STCTPL N SFAL DECOMP POH and change out spear grapple. After further investigation it was discovered that the original grapple was incorrectly labeled by the manufacturer. 0.50 STCTPL P DECOMP RIH engage 7-5/8" casing, Pull casing to the rig floor. LD Spear assembly, 26.61' cut joint w/ emergency slips. Pulled free at 155k. 5.50 STCTPL P DECOMP POH Laying down 7-5/8" casing. recovered 111 jts, 1 cut joint 26.17' 1.00 STCTPL P DECOMP Clean and clear rig floor, LD casing equipment. 0.50 BOPSU P DECOMP Install test plug and Change out top set of rams to 3-112" x 6" Var. 0.50 BOPSU P DECOMP Cont' Change out top set of rams to 3-1/2" x 6" Var. 0.50 BOPSU P DECOMP Test bonnets and Rams to 3500 psi. Pull test plug and install wear bushing. 0.50 STCTPL P DECOMP Release spear from fish and break out XO's. 0.50 STCTPL P DECOMP RU 3-1/2" handling equipment. 2.00 STCTPL P DECOMP RIH PU 30 jts of 3-1/2" NSCT 1x1. Printed: 1/16/2006 11:50:15 AM BP EXPLORATION Operations Summary Report Legal Well Name: Z-46 Common Well Name: Z-46 Event Name: REENTER+COMPLETE Start: 12/13/2005 Contractor Name: NABOBS ALASKA DRILLING 1 Rig Release: 1!912006. Rig Name: NABOBS 7ES Rig Number: 7ES Page 2 of 12 Spud Dater 1 1 /1 712005 End: 1 /11 /2006 Date From - To Hours Task Code NPT Phase Description of Operations 12/16/2005 04:00 - 05:30 1.50 STCTPL P 05:30 - 06:00 0.50 STCTPL P 06:00 - 07:30 1.50 STCTPL P 07:30 - 07:45 0.25 STCTPL P 07:45 - 09:00 1.25 STCTPL P 09:00 - 09:30 0.50 STCTPL P 09:30 - 10:30 1.00 STCTPL P 10:30 - 13:30 3.00 STCTPL P 13:30 - 16:30 3.00 STCTPL P 16:30 - 19:30 3.00 STCTPL P 19:30 - 20:30 1.00 STCTPL P 20:30 - 21:00 0.50 STCTPL P 21:00 - 22:30 1.50 BOPSU P 22:30 - 00:00 1.50 BOPSU P 12/17/2005 100:00 - 02:00 02:00 - 02:30 02:30 - 06:30 06:30 - 09:00 09:00 - 11:00 11:00 - 15:30 15:30 - 17:30 17:30 - 18:30 18:30 - 20:00 20:00 - 20:30 20:30 - 22:00 2.001 BOPSUF#P 0.50 BOPSU P 4.00 STCTPL P 2.50 STCTPL P 2.00 STCTPL P 4.50 STCTPL P 2.00 STCTPL P 1.00 STCTPL P 1.50 STKOH P 0.50 STKOH P 1.50 STKOH P 22:00 - 00:00 2.001 STKOH I P 12/18/2005 00:00 - 01:00 1.00 STKOH P 01:00 - 01:30 0.50 STKOH P 01:30 - 02:30 1.00 STKOH P 02:30 - 03:30 1.00 BOPSU P 03:30 - 05:00 I 1.501 STKOH I P DECOMP RIH with 3-1/2" work string on 4" drill pipe. DECOMP MU Top Drive and Wash from 4575' to EZSV @ 4650' DECOMP Circulate 5 bbl 18 ppg pill out of hole and condition mud for cement. DECOMP LD 2 singles of drill pipe and PU 20' of pup and MU cement lines. DECOMP PJSM held with Schlumberger Cementers and rig crew. Pump 5 bbl water, test lines to 3000 psi, 15 bbl water, 32.5 bbls 17 ppg Class G cement, 2 bbls water. switch over to rig pumps and displace w/ 38 bbls mud. Lay plug from 4650' to TOC -4275' DECOMP POH slowly 5 stands to 4140' pulling wet. DECOMP Circulate bottoms up, no cement retruns. Monitor well & pump dry job. Blow down top drive. Note: MW 9.2 ppg in & out DECOMP POH laying down drill pipe 1x1 DECOMP RU 3-1/2" handling equipment and LD 3-1/2" NSCT work string. RD 3-1/2" handling equipment. DECOMP RIH with 4" drill pipe from derrick and LD same. DECOMP Change out top drive quill and pipe handler to 5" equipment DECOMP Service Top Drive DECOMP Pull wear bushing and RU test joint and install test plug. DECOMP Test BOPE 250 psi low, 3500 psi High. As per BP & AOGCC Regulations. Witness of test waived by Chuck Scheave AOGCC. Witnessed By (WSL) Chris Clemens, (Nabors Toolpusher) Ray Barnes DECOMP Cont' Test BOPE 250 psi low, 3500 psi High. As per BP & AOGCC Regulations. Witness of test waived by Chuck Scheave AOGCC. Witnessed By (WSL) Chris Clemens, (Nabors Toolpusher) Ray Barnes DECOMP RD Test equipment. Install wear bushing. Blow down lines. DECOMP PJSM-RIH picking up 129 Jts. 5" drill pipe 1x1 to -4065' DECOMP POH Stand back 43 stands of 5" DP DECOMP Load pipe shed with 129 jts 5" drill pipe SLM same. DECOMP RIH picking up 129 Jts. 5" drill pipe 1x1 to -4065' DECOMP POH Stand back 43 stands of 5" DP DECOMP Load pipe shed with 105 jts 5" drill pipe, 17 jts. 5" HWDP and BHA. SLM same. INTi PJSM - MU Directional BHA #7 and orient same. Bit / 1.5 deg motor / XO / NM Stb /ARC / MW D / ADN INTi PJSM -Load source. INTi Cont' RIH PU BHA / NM DC / NM Stb / NM DC /Saver Sub / Jar / 17 HWDP/ & Shallow flow test MW D C~3 710'. INT1 RIH with BHA #7 PU 5" drill pipe 1x1. PU ghost reamer between Jts. 8 & 9. INT1 RIH PU 5" drill pipe 1x1. INTi MU Top drive and wash from 4100', tag TOC Q 4230' INT1 CBU 450 gpm 780 psi. INT1 RU test equipment and test 10-314" casing to 3500 psi. Loss 240 psi in 30 Min. RD, blow down test equipment. INT1 Drill Soft cement from 4230' to 4280' Hard cement from 4280' to KOP at 10-3/4" shoe 4475' 490 gpm, 1260 psi off, 1460 psi on, UP Wt-110k, DN Wt-80k, RT Wt-100K, TO On 6k, Off 4k, Printed: 1!16/2006 11:50.15 AM BP EXPLORATION Operations Summary Report Page 3 of 12 Legal Well Name: Z-46 Common Well Name: Z-46 Spud Date: 11/17/2005 Event Name: REENTER+COMPLETE Start: 12/13/2005 End: 1/11/2006 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 1/9/2006 Rig Name: NABOBS 7ES Rig Number: 7ES Date .From - To Hours Task Code ~ NPT ~ Phase. - - -1 ~ 12/18/2005 03:30 - 05:00 1.50 STKOH P INT1 05:00 - 05:30 0.50 DRILL P INT1 05:30 - 06:30 1.00 DRILL P INT1 06:30 - 07:00 0.50 DRILL P INTi 07:00 - 07:30 0.50 DRILL P INT1 07:30 - 08:00 0.50 DRILL P INT1 08:00 - 08:30 0.50 DRILL P INT1 08:30 - 12:00 3.50 DRILL P INTi 12:00 - 00:00 I 12.001 DRILL I P I I INT1 12119!2005 100:00 - 12:00 { 12.001 DRILL 1 P I I INT1 12:00-00:00 ~ 12.OO~DRILL IP ~ ~INT1 12/20/2005 100:00 - 12:00 I 12.001 DRILL I P I I INT1 12:00 - 13:00 1.001 DRILL P INT1 13:00 - 14:00 1.00 DRILL P INTi 14:00 - 16:30 2.50 DRILL P INT1 16:30 - 18:00 I 1.501 DRILL I P I I INT1 18:00 - 20:30 2.50 DRILL P INTi 20:30 - 21:30 1.00 DRILL P INT1 21:30 - 23:00 1.50 DRILL P INT1 Description of Operations RPM-80, WOB 8k. Drill Kicking off of cement plug from 4475' to 4495' 500 gpm, 1520 psi on bottom Displace mud system over to new 8.8 ppg LSND. Cut and slip 120' of drilling line Service Rig and Top Drive. RU and perform LOT. with 8.8 ppg test MW. 550 psi test pressure @ 2885' TVD. LOT EMW= 12.47 ppg. RD /blow down test equipment. Obtain ECD benchmark and SPR's. Drill from 4495' to 4888' UP WT- 110k, DN WT- 80k, RT WT- 100k, TO On Bttm.- 7k, TO Off Bttm.- 6k, RPM 100, 600 GPM, 1305 psi. off Bttm. 1503 psi on Bttm. WOB- 5-10k ART= .081 AST= 1.10 /ADT= 1.18 Cal. ECD 9.4, ACT ECD 9.4 Drill from 4888' to 6307' UP WT- 158k, DN W`f- 110k, RT WT- 125k, TO On Bttm- 9k, TO Off Bttm.- 8k, RPM 100, 600 GPM, 1525 psi. off Bttm. 1750 psi on Bttm. WOB- 5-20k ART= 6.15 /AST= 1.48 /ADT= 7.63 Cal. ECD 9.54, ACT ECD 10.0 Drill from 6307' to 7436' UP WT- 175k, DN WT- 117k, RT WT- 140k, TO On Bttm.- 10-11k, TO Off Bttm- 9k, RPM 100, 600 GPM, 1750 psi. off Bttm. 2080 psi on Bttm. WOB- 25-30k ART= 8.53 /AST= .92 /ADT= 9.45 Cal. ECD 9.63, ACT ECD 9.95 Drill from 7436' to 8041' UP WT- 205k, DN WT- 125k, RT WT- 155k, TO On Bttm- 13k, TO Off Bttm- 10k, RPM 110, 650 GPM, 1950 psi. off Bttm / 2150 psi on Bttm. WOB- 30-35k ART= 9.02 /AST= 0 /ADT= 9.02 Cal. ECD 9.69, ACT ECD 9.96 Drill directionally from 8041' to 8620' UP WT- 205k, DN WT- 130k, RT WT- 160k, TO On Bttm- 11 k, TO Off Bttm- 8-9k, RPM 100, 652 GPM, 2500 psi. off Bttm / 2350 psi on Bttm. WOB- 30-35k Cal. ECD 9.70, ACT ECD 9.93 Drill directionally from 8620' to 8664', 6171' TVD. 650 rpm 2425 psi on, 2225 psi off, 100 rpm, 13K tq. on, 11 k tq. off, up wt. 215K, SO 135K, rot. wt. 160K. Total bit hrs. = 38.19. ROP 44'/hr. Decision made to trip for bit. Circulate bottoms up at 650 gpm, 2225 psi, 100 rpm. Monitor well. Static. Pull 5 stands. No swabbing. Pump dry job. POOH to 4981'. POH to shoe at 4475'. Tight hole w/swabbing 1/4981' to 4888' MU topdrive and backream 1/4888' to 4508'. Monitor well. Static. Mud wt. in and out 9.1 ppg. Pump dry job. Continue POH to BHA. Stand back HWDP and lay down BHA. PJSM on nukes. Remove source and continue LD BHA. 1 nozzle plugged. Broken and missing cutters. Bit 1/8" under gage. Printed: 7!16/2006 t 7:50:15 AM BP EXPLORATION Operations Summary Report Page 4 of 12 Legal Well Name: Z-46 Common Well Name: Z-46 Spud Date: 11/17/2005 Event Name: REENTER+COMPLETE Start: 12/13/2005 End: 1/11/2006 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 1/9/2006 Rig Name: NABOBS 7ES Rig Number: 7ES Date 'From - To Hours Task Code ~, NPT ~ Phase ! Description of Operations 12/20/2005 23:00 - 23:30 0.50 DRILL P INT1 Function test BOP. Clean rig floor. 23:30 - 00:00 0.50 DRILL P INT1 Service rig and topdrive. 12/21 /2005 00:00 - 02:30 ~ 2.50 ~ DRILL ~ P 02:30 - 05:30 3.00 DRILL P 05:30 - 06:00 0.50 DRILL P 06:00 - 08:30 2.50 DRILL P 08:30 - 09:30 1.00 DRILL P 09:30 - 10:30 1.00 DRILL P 10:30 - 20:00 9.50 DRILL P 20:00 - 21:30 1.50 DRILL P 21:30 - 00:00 I 2.501 DRILL I P 12/22/2005 100:00 - 01:00 I 1.001 DRILL I P 01:00 - 04:30 I 3.50 f DRILL I N 04:30 - 05:00 0.50 DRILL P 05:00 - 06:30 1.50 DRILL P 06:30 - 09:30 3.00 DRILL N 09:30 - 21:00 11.50 DRILL P 21:00 - 00:00 I 3.001 DRILL I N ART = 8.49, AST = 2.42, ADT 10.91, footage = 623, ROP = 57.1 ft/hr. INT1 PU BHA. PJSM on nukes. Install sources and RIH. Surface test MWD, INTi RIH to shoe at 4475'. INTi Spot Seal Lube pill at shoe. INT1 RIH to 4995' and work BHA through tight spots from 4995' to 5120'. Pump and rotate slowly. PU 150K, SO 80K, Rot. 20 rpm, 250 gpm. INTi Drill f/8664' to 8704'. 450 gpm, 2500 psi. while attempting to weight up on the fly to 10.5 ppg spike fluid requirement but vac trucks could not supply adequate flow rate. Shut down to circulate. INT1 Circulate 400 gpm and weight up to 10.5 ppg. mud weight. INT1 Drill (/8704' to 9505'. 616 gpm, 2910 psi on, 2840 psi off, ''15-17 tq. on, 12-13 tq. off, Up wt. 225K, SO wt. 140K, Rot. wt. 168K, ECD calculated 11.3 ppg, ECD actual 12.02 ppg. INT1 Pumped hi-vis sweep. Packed off after connection, lost circulation, mud loss rate initially 50 bbls.lhr. Pull one stand off bottom and monitor, well static w/pumps off. Pump 15 #/bbl. LCM pill consisting of MI MIX II C. 610 gpm, 2775 psi. INTi Drill f/9505' to 9616', 6940' TVD. 616 gpm, 2750 psi, 140 rpm, 18K tq. on, Up wt. 230K, SO wt. 145K, Rot. wt. 170K, ECD calculated 11.22 ppg., ECD actual 11.48 ppg. Mud losses stopped. Total mud losses for incident = 194 bbls. ADT = 8.26 hrs. Footage = 952'. ROP for 24 hrs. = 115'/hr. INT1 Drill w/BSS from 9616' to 9700'. 616 gpm, 2350 psi on, 2150 off, tq. on 18-20K, tq. off 14-16K, Up wt. 245K, SO wt. 148K, Rot. wt. 170K. Pressure loss trend noted. Monitor and check pumps and all surface equipment. All ok. Check MWD turbine rate---decreasing. Compare pump flow/MWD turbine flow/standpipe pressure. Pump flows constant 615 gpm, MWD turbine flow and standpipe pressure decreasing same ratio. DFAL INT1 POH looking for washout. Find washout at slipsetting point (2' below tooljoint) on body of drillpipe joint at 5140'. INT1 POH 6 stands to shoe at 4475'. INTi Slip and cut drilling line. Perform rig service and service top drive. DFAL INTi RIH to 9700'. INT1 Drill wlRSS f/9700' to 10640'. 615 gpm, 3070 psi on, 2960 off, tq. on 18K, tq. off 17K, Up wt. 250K, SO wt. 165K, Rot. wt. 175K, rpm 140. ECDs calculated = 11.59 ppg. and ECDs actual = 12.0 ppg at 10640'. Experience 600 psi drop (/3070 psi to 2470 psi. in 10 min. period. Shut down and check out all surface equipment and pumps. All ok. DFAL INT1 POH looking for washout. Pull up to 350 K, a 100K overpull w/swabbing. MU topdrive and pump out of Miluveach f/10166' Printed: 1/16/2006 11:50:15 AM BP EXPLORATION Operations Summary Report Page 5 of 12 Legal Well Name: Z-46 Common Well Name: Z-46 Spud Date: 11/17/2005 Event Name: REENTER+COMPLETE Start: 12/13/2005 End: 1/11/2006 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 1/9/2006 Rig Name: NABOBS 7ES Rig Number: 7ES Date Fro~~~ - To Hours Task ,Code ~I NPT Phase Description of Operations - - . 12/22/2005 121:00 - 00:00 ~ 3.00 ~ DRILL ~ N ~ DFAL INT1 (TVD 7286') to 9884' (TVD 7066') . Overpull to 75k while 12/23/2005 ~ 00:00 - 01:30 i 1.50 ~ DRILL ~ N 01:30 - 02:30 ~ 1.00 ~ DRILL ~ N 02:30 - 12:00 1 9.501 DRILL I P 12:00 - 12:30 0.50 DRILL N 12:30 - 15:00 2.50 DRILL N 15:00 - 16:30 1.50 DRILL P 16:30 - 17:30 1.00 DRILL P 17:30 - 18:00 0.50 DRILL P 18:00 - 20:00 I 2.001 DRILL I N 20:00 - 00:00 I 4.001 DRILL I P 12/24/2005 00:00 - 02:00 2.00 DRILL P 02:00 - 03:30 1.50 DRILL P 03:30 - 05:00 1.50 DRILL P 05:00 - 06:00 1.00 DRILL P 06:00 - 07:00 1.00 DRILL P 07:00 - 10:00 3.00 DRILL P 10:00 - 11:45 1.75 DRILL P 11:45 - 13:30 1.75 DRILL P 13:30 - 15:30 2.00 DRILL P 15:30 - 00:00 8.50 DRILL P 12/25/2005 00:00 - 02:00 2.00 DRILL P 02:00 - 03:00 1.00 DRILL P 03:00 - 05:00 2.00 DRILL P pumping out, packing off at several points w/partial returns. ADT = 8.21 hrs. Footage = 1024. ROP for day = 125'/hr. DFAL INT1 POH to find washout at 8080'. 1/2" hole at slip bite point (3' below tool joint). Lay down and replace jt. DFAL INT1 RIH to 10640'. No problem RIH through Miluveach. Wash down last stand at 185 gpm, 700 psi. INT1 Drill directionally w/9-718" RSS from 10644' to 11305', 8212' TVD. 607 gpm, 3090 psi on, 3050 off, tq. on 20-22K, tq. off 18-20K, Up wt. 270K, SO wt. 155K, Rot. wt. 190K, rpm 140. ECDs calculated = 11.59 ppg. and ECDs actual 11.8 ppg at 11305'. Dies in top drive pipe pipe backup wrench fail. RREP INT1 POH 5 stands. RREP INTi Change out dies in top drive drill pipe backup wrench. RIH to bottom. I INTi Drill 9-7/8" hole to 11399'. Maximum torque limitation of 23.7K reached. INTi Back ream up to 11209'. Mix and pump tubes to 5%. Ream back to bottom. INTi Drill 9-7/8" hole from 11399' to 11463'. Tq. 20K w/new tubes. 600 psi pressure drop. Check pumps and surface equipment. All ok. DFAL INTi POH looking for washout. Find 1/2" hole at slip bite point (3' down from tool joint) at 680'. Lay down and replace joint. RIH to bottom. Wash down last stand. INTi Drill 9-7/8" hole from 11463' to 11736', 8522' TVD. 604 gpm, 2950 psi on, 2910 off, tq. on 20K, tq. off 18-20K, Up wt. 285K, SO wt. 160K, Rot. wt. 200K, rpm 140. ECDs calculated = 11.59 ppg. and ECDs actual 11.83 ppg at 11736'. ADT = 11.21 hrs. Footage = 1096'. ROP for 24 hr period = 97.8 ft./hr. INT1 Drill directionally w/9-7/8" RSS to 11971'. INT1 Drill to 11990' and circulate bottoms up for samples per geo. INT1 Drill to 11995' and circulate bottoms up for samples per geo. INTi Drill to 12000' and circulate bottoms up for samples per geo. INT1 Drill to 12010' and circulate bottoms up for samples and per geo TD intermediate section. INTi Short trip. Pumped out of hole from 12010' 10640' well swabbing. Pulled OK from 10640' to 9696'. INTi RIH to 12010'. Found tight hole at 10325', 10810' and 10870' to 10890'. Wash down 10830' to 10924'. INT1 Circulate and condition mud. Pump hi-vis sweep. 610 gpm, 2800 psi. Monitor well----static. INT1 POH w/15 stands. No swabbing. Pump dry job. Blow down topdrive. INT1 POH Laying 5" drill pipe down. INTi POH laying down to HWDP. INTi POH laying down 17 jts. 5" HWDP. INTi PJSM w/Schlumberger on nuke safety. Lay down BHA# 8. Note: Bit severely eroded around cutters, w/some having lost Printed: 1/16/2006 11:50:15 AM BP EXPLORATION Operations Summary Report Page 6 of 12 Legal Well Name: Z-46 Common Well Name: Z-46 Spud Date: 11/17/2005 Event Name: REENTER+COMPLETE Start: 12/13/2005 End: 1/11/2006 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 1/9/2006 Rig Name: NABORS 7ES Rig Number: 7ES Date .From - To ~ Hours Task ~ Code NPT i 12/25/2005 03:00 - 05:00 05:00 - 06:30 06:30 - 08:30 08:30 - 14:00 2.001 DRILL I P 1.50 CASE P 2.00 CASE P 5.50 CASE P 14:00 - 15:00 15:00 - 00:00 12/26/2005 00:00 - 03:00 1.001 CASE I P 9.001 CASE I P 3.001 CASE I P 03:00 - 03:30 0.50 CASE P 03:30 - 06:30 3.00 CEMT P 06:30 - 09:30 I 3.001 CEMT I P Phase ' Description of Operations -- - __ INT1 60% of support structure. Clean floor. INT1 Change out rams and test doors w/chart. INT1 RU 7-5/8" casing running equipment. INT1 RIH w/shoe track plus one jt. Check floats. OK. RIH w/7-5/8" casing using Franks Fill Up Tool and filling every jt to shoe at 4475'. RU and heat mud w/Hot Oill and keep mud in pits at 100 deg F. INTi Circulate casing volume at shoe at 4475'. 252 gpm at 400 psi. INT1 RIH f/4475' to 10195'. Circulate every 10 jts. w/heated mud. Mud temp in = 100 deg. F., mud temp out = 78 deg. F. No mud losses. Tight hole w/some packing off at 8853', and 9910' to 9991'. Circulate at 10195'. 168 gpm, 625 psi. Up wt. 275K, SO wt. 150K. INT1 Run casing from 10195' to 12010'. Break circulation every ten joints. Wash last joint to bottom w/Franks Tool. Tag up at 12010'. Break circulation. POH and lay down jt 295. Pick up weight 450K. Pick up FMC casing hanger and landing joint, land string with 7 5/8" Shoe at 12,006'. Float Collar at 11,962'. Landing Collar at 11,919'. Halliburton ES Cementer at 9599'. INT1 RD Franks tool and MU hanger and landing joint. INT1 Rig up and circulate 1 bottoms up. Stage pumps up slowly to 6 bpm. at 715 psi. Flowline mud temperature 80 deg F. Mud wt. in 11.0 ppg, mud wt. out 11.0 ppg. PJSM w/Schlumberger, all hands and WSL for cement job. INT1 Rig up to cement 1st stage of 7-5/8" intermediate casing. Pressure test lines to 4000 psi. Pump mud push to Tee on floor to clear lines of water. Pump 40 bbls. 11.5 ppg. Mud Push at 4.8 bbls./min, 390 psi. Shut down. Drop plug # 1. Pump 124 bbls. 15.8 ppg. cement slurry at 7 bbls./min. Shut down. Drop plug # 2. Wash up cement lines. Use rig pumps to displace cement w/551 bbls. of 11.0 ppg mud at 6 bpm. ICP 225 psi, FCP 1172 psi. Bump plug, pressure to 1500 psi. Bleed off and check floats---OK. Load plug #3. Pressure up down casing to 3300 psi to open ES Cementer. Circulate bottoms up from ES cementer at 6 bpm, 735 psi. Mud push back to surface w/cement contaminated fluid. PH spiked to 12. Cement in place 09:00. 09:30 - 18:00 8.50 CEMT P INTi Circulate and condition mud while waiting on cement compressive strength of 500 psi. 18:00 - 18:30 0.50 CEMT P INTi Rig cement bulk truck up. PJSM w/Schlumberger, all hands, and WSL for 2nd stage cement job. 18:30 - 22:30 4.00 CEMT P INT1 Pump Mud Push to Tee. Pump 45 bbls. 8.3 ppg CW 100 at 6 bpm. 540 psi. Pump 50 bbls. 11.5 ppg. Mud Push at 5.6 bbls./min. Pump 188 bbls. 12.5 ppg Crete slurry at 5.8 bbls./min. Wash up cement line out of Tee to pits. Use rig pumps to displace cement w/439 bbls. 11.0 ppg mud at 6 bpm, ICP 210 psi, FCP 896 psi. Stage rates down to 3 bpm to bump plug. Bump plug. Pressure up to 1850 psi to close ES Cementer. Hold for 5 min. Bleed off and check for flowback. OK. Cement in place at 22:30. Printed: 1/16/2006 11:50:15 AM BP EXPLORATION Page 7 of 12 Operations Summary Report Legal Well Name: Z-46 Common W ell Name: Z-46 Spud Date: 11/17/2005 Event Nam e: REENTE R+COM PLET E Start : 12/13/2005 F_nd: 1/11/2006 Contractor Name: NABOB S ALASK A DRI LLING I Rig Release: 1/9/2006 Rig Name: NABOB S 7ES Rig Number: 7ES Date ~ From- To 1 ~~ Hours ' Task Code Nf T Phase ~ Descriptioncf Operations 12/26/2005 22:30 - 23:30 1.00 CEMT P INT1 Blow down, rig down cementing equipment, lay down landing joint. 23:30 - 00:00 0.50 CASE P INTi Install casing packoff, run in lock down screws and test to 3500 psi. OK. 12/27/2005 00:00 - 02:45 2.75 CASE P INTi Change back to variable rams. Rig up to test BOP. Rig up line to 7 5/8" x 10 3/4" OA valve. Pump 5 bbls mud down annulus at 200 psi. Continue to pump 5 bbls mud down annulus every 30 mins. Pumped 11.0 ppg LSND mud down 7-5/8" x 10-3/4 annulus for infectivity test: 1 bbl./min at 400 psi for 5 bbls. 2 bbl./min at 500 psi for 5 bbls. 3 bbl./min at 525 psi for 5 bbls. 4 bbl./min at 600 psi for 5 bbls. Pumped a total of 100 bbls of 11.0 ppg. mud down annulus with rig pumps. 02:45 - 06:30 3.75 BOPSU P PROD1 Test BOP 250 psi low pressure and 3500 psi high pressure. Test witnessed by Lowell Anderson BP WSL and Ray Barnes Nabors Tourpusher. AOGCC representative John Crisp waived AOGCC attendance of test. Freeze protect 7 5/8" x 10 3/4" OA with 100 bbl diesel heated to 70 degrees. Final squeeze pressure 900 psi at 2 BPM. 06:30 - 07:00 0.50 BOPSU P PROD1 RD test equipment. 07:00 - 11:00 4.00 DRILL P PROD1 PU 4" HT-40 drill pipe from pipe shed. 11:00 - 13:00 2.00 DRILL P PROD1 POH w/drill pipe and rack back in derrick. 13:00 - 14:30 i.50 DRILL P PROD1 PU BHA # 9 w/6-3/4" tri-cone bit and 1.69 deg. ShortPak motor assy. Orient and shallow test MW D equipment. 14:30 - 00:00 9.50 DRILL P PROD1 PU 4" drill pipe from pipe shed and RIH. 12/28/2005 00:00 - 02:30 2.50 DRILL P PROD1 PU 4" drill pipe and continue in hole to plug/ES cementer at 9599'. 02:30 - 03:30 1.00 DRILL P PROD1 Drill plug, ES cementer at 40 rpm, 250 gpm, 10K on bit. PU every 3" to clear rubber from bit. 03:30 - 07:00 3.50 DRILL P PROD1 RIH w/ 6 3/4" bit picking up singles from pipe shed. Tag and drill on plug fragment several times. 07:00 - 08:00 1.00 DRILL P PROD1 RU and test casing to 3500 psi and chart for 30 mins. RD casing test. 08:00 - 09:00 1.00 DRILL P PROD1 Drill out shoe track to top of shoe. 250 gpm, 1850 psi, 40 rpm, 18K tq. Up wt. 200K, SO wt. 125K, 160 rot wt. 09:00 - 10:45 1.75 DRILL P PRODi Displace well to 8.4 ppg. Flo-Pro mud system. 10:45 - 11:30 0.75 DRILL P PROD1 Cut and slip drilling line. 11:30 - 11:45 0.25 DRILL P PRODi Service top drive. 11:45 - 12:00 0.25 DRILL P PROD1 Drill out shoe at 12010'. 12:00 - 12:30 0.50 DRILL P PROD1 Drill f/12010' to 12030'. Condition mud 8.4 ppg. in and out. 285 gpm, 1700 psi, 45 rpm, 6K tq. on. 12:30 - 13:30 1.00 DRILL P PROD1 Pull up into shoe and perform FIT to 10.0 ppg. EMW, 8.4 ppg mud, 725 psi, 12030' MD, 8713' TVD. RD test equipment. 13:30 - 00:00 10.50 DRILL P PROD1 Drill w/1.69 deg motor and button bit f/12030' to 12160'. TVD = 8799'. 296 gpm, 1560 psi off 1800 on. Up wt. 250 K, SO wt. 130K. MWD signal intermittent, check mud properties. OK. ADT = 5.68 hrs. ART = .48 hrs. AST = 5.2 hrs. 12/29/2005 00:00 - 04:30 4.50 DRILL P PROD1 Drill w/1.69 deg. motor and insert bit f/12160' to 12213' 330 gpm, 1590 psi off, 1670 on. Up wt. 250 K, SO wt. 130K. No signal from MWD. Trouble shoot mud, pumps, pulse dampeners w/no indication of problems. 04:30 - 10:00 5.50 DRILL N DFAL PRODi POH to check for MWD or Circ Sub problem. Mud wt. 8.4 ppg. in and out. Printed: 1/16/2006 11:50:15 AM BP EXPLORATION Page 8 of 12 Operations Summary Report Legal Well Name: Z-46 Common W ell Name: Z-46 Spud Date: 11/17/2005 Event Nam e: REENTE R+COM PLET E Start : 12/13/2005 End: 1/11/2006 Contractor Name: NABOB S ALASK A DRI LLING I Rig Release: 1/9/2006 Rig Name: NABOB S 7ES Rig Number: 7ES Date ~, From - To ~ Hours Task Code NPT Pf~asc .Description of Operations 12/29/2005 10:00 - 11:00 1.00 DRILL N DFAL PROD1 LD BHA. Surface Test MWD. OK. MWD checked out ok in shop. Circ. Sub washed out. BD stack. Function test BOPS. 11:00 - 12:00 1.00 DRILL P PROD1 Service top drive. 12:00 - 15:00 3.00 DRILL N WAIT PROD1 Condition mud, rig maintenance, mobilize bit and 7/8 3 stage AIM MM. 15:00 - 16:00 1.00 DRILL N DFAL PROD1 PU BHA # 10--new 6-3/4" insert bit and 1.83 AIM motor. Orient tools. 16:00 - 21:00 5.00 DRILL N DFAL PROD1 RIH to 12093'. 21:00 - 21:30 0.50 DRILL N DFAL PRODi Wash down (/12093' to 12204'. Work bridge at 12154'. 21:30 - 00:00 2.50 DRILL P PROD1 Drill f/12205' to 12253', 8830' TVD. 305 gpm, 1950 psi on, 1850 psi off, Up wt. 205K, SO wt. 130K. ADT = 3.78 hrs. AST = 3.78 hrs. Footage = 93. ROP for 24 hrs = 24.6 ft./hr. 12/30/2005 00:00 - 12:00 12.00 DRILL P PROD1 Drill 6 3/4" hole, slide and rotate f/12253' ft to 12608' ft. 325 GPM, 2150 psi on, 1930 psi off, Tq. on 10K, Tq. off 9K, Up wt. 205K, SO vet. 135K, Rot wt. 155K, 60 RPM rotary + 172 motor = 232 rpm downhole. 12:00 - 00:00 12.00 DRILL P , PROD1 Drill 6 3/4" hole, slide and rotate 12608 ft to 13018' ft. 325 GPM, 2100 psi on, 2010 psi off, Tq. on 12K, Tq. off 9K, Up wt. 210K, SO wt. 133K, Rot wt. 155K, 60 RPM rotary + 172 rpm motor = 232 rpm downhole. Lost 45 bbls. mud at 12918' at 21:00. Losses continued at 38 bbls/hr. to 13018'. Total mud loss for incident = 159 bbls. ADT = 15.54, ART = 3.04, AST = 12.5. Footage = 765'. ROP for 24 hrs. = 49'/hr. 12/31/2005 00:00 - 01:00 1.00 DRILL P PROD1 Drill 6-3/4" hole, slide and rotate from 13018' to 13053'. 325 GPM, 2143 psi on, 2020 psi off, Tq. on 12K, Tq. off 8K, Up wt. 215K, SO wt. 135K, Rot wt. 160K, 60 RPM rotary + 172 rpm motor = 232 rpm downhole. 01:00 - 01:15 0.25 DRILL P PROD1 POH to 12860'. No swabbing. MW 8.5 ppg in and out. 01:15 - 02:00 0.75 DRILL P PROD1 Spot 40 bbl LCM pill above lost circulation zone w/10 Ib./bbl. Mix II C and 10 Ib./bbl Mix II M at 12860'. 02:00 - 02:15 0.25 DRILL P PROD1 POH to 7-5/8" shoe at 12006'. No swabbing. 02:15 - 02:30 0.25 DRILL P PRODi Drop ball and rod and open Circ. Sub. Pump Safecarb 250 dry job. BD top drive. 02:30 - 06:00 3.50 DRILL P PRODi POH w/ 6 3/4" bit. Hole fill showing well static. 06:00 - 07:30 1.50 DRILL P PROD1 LD BHA #10. Function test BOP. Clear floor. Load BHA in pipe shed. 07:30 - 09:30 2.00 DRILL P PROD1 Spot Schlumberger wireline truck. RU wireline equipment. PU logging tools to floor. 09:30 - 14:00 4.50 DRILL P PROD1 USIT log 7-5/8" casing 12006' to 4475'. 14:00 - 14:30 0.50 DRILL P PRODi RD Schlumberger wireline equipment. 14:30 - 16:30 2.00 DRILL P PRODi PU BHA # 11 w/ DSXI4GH+GJNV bit, 1.50 deg. AIM PDM. Ajust MM, change stab sleeve. 16:30 - 21:00 4.50 DRILL P PROD1 RIH w/4" drill pipe stands. Function test MWD. 21:00 - 21:30 0.50 DRILL P PROD1 Service top drive/rig. 21:30 - 23:00 1.50 DRILL P PROD1 RIH f/12008' to 13050'. Tight spot at 12697'. Wash and ream f/12697' to 13050'. 23:00 - 00:00 1.00 DRILL P PROD1 Directionally drill 6-3/4" hole f/13050' to 13094'. 320 GPM, ~ 1900 psi on, 1790 psi off, Tq. on 9K, Tq. off 8K, Up wt. 210K, Printed: 1/16/2006 11:50:15 AM BP EXPLORATION Operations Summary Report Legal Well Name: Common Well Name: Event Nan-ie: Contractor Name: Rig Name: Date ~~ From - To __ - - - - 12/31 /2005 23:00 - 00:00 Z-46 Z-46 REENTER+COMPLETE NABORS ALASKA DRILLING I NABORS 7ES Hours Task '~ Code ~ NPT Page 9 of 12 Spud Date: 11/17/2005 Start: 12/13/2005 End: 1 /1 1 /2006 Rig Release: 1/9/2006 Rig Number: 7ES Phase Description of Operations -- - - -- 1.00 ~ DRILL ~ P ~ PROD1 1 /1 /2006 00:00 - 12:00 12:00 - 00:00 1 /2/2006 00:00 - 12:00 12:00 - 00:00 12.00 DRILL P 12.00 DRILL I P 12.00 DRILL P 12.00 DRILL P 1/3/2006 00:00 - 18:00 18.00 DRILL 18:00 - 19:30 1.50 DRILL 19:30 - 00:00 4.50 DRILL 1/4/2006 00:00 - 03:00 3.00 DRILL PROD1 PROD1 PROD1 PRODi PRODi PROD1 PRODi PROD1 SO wt. 135K, Rot wt. 165K, 40 RPM rotary + 81 rpm motor = 120 rpm downhole. 15 bbls mud losses for 24 hrs. ADT = .51, ART = .35, AST = .16. Footage = 41'. ROP for 24 hrs. = 80'/hr. Drill directionally w/BHA # 11 1.50deg AIM PDM and PDC bit from 13094' to13730'. 320 GPM, 2300 psi on, 1950 psi off, Tq. on 14K, Tq. off 9K, Up wt. 220K, SO wt. 130K, Rot wt. 165K, 80 RPM rotary + 81 rpm motor = 161 rpm downhole. Drill directionally w/BHA # 11 1.50deg AIM PDM and PDC bit from 13730' to 14337'. 330 GPM, 2250 psi on, 1970 psi off., Tq. on 12K, Tq. off 9K, Up wt. 225K, SO wt. 125K, Rot wt. 165K, 80 RPM rotary + 81 rpm motor = 161 rpm downhole. No significant mud losses for 24 hr. period. ADT for 24 Hours = 14.53, AST = 8.56, ART = 5.97. Footage = 1243'. ROP for 24 hrs. = 85.6'/hr. Drill directionally w/BHA # 11 1.50deg AIM PDM and PDC bit from 14337' to 15008'. 330 GPM, 2410 psi on, 2100 psi off, Tq. on 14K, Tq. off 10K, Up wt. 220K, SO wt. 133K, Rot wt. 163K, 80 RPM rotary +81 rpm motor = 161 rpm downhole. Drill directionally w/BHA # 11 1.50deg AIM PDM and PDC bit from 15008' to 15643'. Lost circulation occurred up to 185 bph at 15026'. Lowered pump rates from 325 gpm. to 250 gpm and pumping 250 Ibs/hr Mix II Coarse LCM. Losses dropped from -185 bbls/hr. to -103 bbls/hr. Hole cleaning ok. 250 GPM, 1680 psi on, 1465 psi off, Tq. on 13K, Tq. off 10K, Up wt. 230K, SO wt.120K, Rot wt. 165K, 80 RPM rotary + 62 rpm motor = 142 rpm downhole. Mud losses for 24 hr. period = 2065 bbls. Brought 580 bbls. of old Flo-Pro mud from MI plant. ADT for 24 Hours = 14.25, AST = 7.25, ART = 7.0. Footage = 1306'. ROP for 24 hrs. = 91.7'/hr. Drill directionally w/BHA # 11 1.50deg AIM PDM and PDC bit from 15643' to 16721'. 270 GPM, 2150 psi on, 1800 psi off, Tq. on 16.5K, Tq. off 12K, Up wt. 240K, SO wt. 115K, Rot wt. 165K, 80 RPM rotary + 67 rpm motor = 147 rpm downhole. Losses averaging -70 to -100 bbls/hr. Total for day losses= 2047 bbls. ART= 7.87 hrs, AST= 3.55, ADT=11.42 hrs. Circulate bottoms up w/ 80 RPM, 250 GPM, 1600 psi. Monitor well. Well static with zero losses pumps down. Mud weight 8.5 ppg in and out. Attempt to POH dry to 16625', well trying to swab. Start pumping out of the hole w/ 250 gpm 1500 psi. to 16530' pulling tight, start back reaming operations w/ 80 rpm's. and back ream from 16530' to 13933' with intermittent over pulls 20-40k and torque stalling at 17k rotary limit. Shale stringers and cuttings beds. Cont' POH Back reaming from 13933' to 12720', cont' pump out of hole to 7-5/8" shoe Q 12006'. Monitor well and blow down top drive. Printed: 1/16/2006 11:50:15 AM BP EXPLORATION Page 10 of 12 Operations Summary Report Legal Well Name: Z-46 Common W ell Name: Z-46 Spud Date: 11/17/2005 Event Nam e: REENTE R+COM PLET E Start : 12/13/2005 End: 1/11/2006 Contractor Name: NABOB S ALASK A DRI LLING I Rig Release: 1/9/2006 Rig Name: NABOB S 7ES Rig Number: 7ES Date ~ Fram - To Hours ~ Task Code I~JPT ' Piiase Descrip~ior~ o. Operations 1/4/2006 03:00 - 04:00 1.00 DRILL P PROD1 Cut & slip drilling line. Service rig and top drive. 04:00 - 07:00 3.00 DRILL P PROD1 RIH. Held up at Fault C~ 15026'. Fill pipe and orient motor high side and work by fault without rotation, wash and ream fault area and cont' RIH to bottom with no problems. 07:00 - 10:30 3.50 DRILL P PROD1 Break circulation and pump 40 bbl. High Vis LCM sweep around at 270 gpm 1550 psi. 80 rpm. 9-10k TO. Hole unloaded at bottoms up. Spot 290 bbls new 8.4 ppg mud across open hole for liner running pill. Monitor well. Static. Mud weight 8.4+ ppg in and out. 10:30 - 16:00 5.50 DRILL P PROD1 POH 1x1 laying down 146 jts. excess drill pipe from 16721' to 12006' Wipe minor over pulls @ 14106', 13897', 13590', 12550', 12116', 12232'. 16:00 - 17:30 1.50 DRILL P PROD1 Drop dart and open circ sub. CBU 404 bbls ~ 520 gpm 1575 psi. till hole cleaned up. Monitor well, pump dry job, drop 2" rabbit. 17:30 - 23:00 5.50 DRILL P PROD1 POH Standing back drill pipe. Monitor well @ BHA 23:00 - 00:00 1.00 DRILL P PROD1 LD BHA #11 24 hr mud loss 761 bbls. 1/5/2006 00:00 - 00:30 0.50 DRILL P PROD1 Cont' LD BHA #11 and clear rig floor of vendors tools. Function test BOP. 00:30 - 02:00 1.50 CASE P RUNPRD PJSM - RU 4-1/2" chrome casing tools. 02:00 - 02:30 0.50 CASE P RUNPRD MU 4-1/2" float equipment Baker-loc connections and check floats. 02:30 - 09:00 6.50 CASE P RUNPRD Run 116 Jts. 4-1/2" Cr13 80 liner, torque turn connections 4400 ft/Ibs opt. 09:00 - 10:30 1.50 CASE P RUNPRD MU Baker HMC Liner hanger ! ZXP Liner top packer. RD 4-1 J2" tubing equipment. Circulate 1 liner volume at 3 bpm, 170 psi. Up wt. 75k, Dn wt. 63k 10:30 - 15:30 5.00 CASE P RUNPRD RIH with 4-1/2" liner on 4" drill pipe filling every 10 stands run to the 7-5/8" casing shoe @ 12006' with 50 bph static loss rate. 15:30 - 16:00 0.50 CASE P RUNPRD Circulate 1 liner /drill pipe volume stating pumps up to 7 bpm 725 psi. Up wt. 175k Dn wt. 125k. 16:00 - 19:00 3.00 CASE P RUNPRD RIH with Liner to TD @ 16721' 19:00 - 19:30 0.50 CEMT P RUNPRD MU Cement head and wash liner down and tag bottom @ 16721' with 30 spm 450 psi. Up wt. 215k Dn wt. 125k. 19:30 - 00:00 4.50 CEMT N CEMT RUNPRD Circulate at reduced rate to maintain mud volume while waiting on Schlumberger cement batch mixer to be mobilized from job on Doyon 14. Circ Rate 1.5 bpm @ 450 psi. w/ Average Mud loss - 50 bph. Rig team was not notified of equipmet shortage prior to running into open hole. 24 Hr Mud Loss = 841bb1s. 1/6/2006 00:00 - 00:30 0.50 CEMT P RUNPRD Stage pumps up to 7 bpm 1170 psi. while holding PJSM.Batch mix cement. 00:30 - 03:00 2.50 CEMT P RUNPRD -Pump 5 bbls water & test lines to 4000 psi. Pump 15 bbls. CW-100. Pump 30 bbls 9.5 ppg Mud Push II. - Pump 53 bbls (205 SX) 15.8 ppg Class G Lead cement w/ 2 ppb ChemNet@ 5 BPM. - Pump 159 bbls (546 SX) 15.8 ppg Class G w/ GasBlock tail cement w/ 2 ppb ChemNet @ 5 BPM. - Wash up cementers through tee (not on top of plug) Drop dart & displace cement with 50 bbl perf pill followed by 142 bbls Printed: 1/16!2006 11:50:15 AM BP EXPLORATION Operations Summary Report Legal Well Name: Z-46 Common Well Name: Z-46 Event Name: REENTER+COMPLETE Start: 12/13/2005 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 1/9/2006 Rig Name: NABOBS 7ES Rig Number: 7ES Date- ~ Fern - To ' Hours Task ~ Cvde ~ NPT ' Phase 1 /6/2006 ~ 00:30 - 03:00 03:00 - 04:30 2.50 ~ CEMT ~ P 1.501 CEMT I P 04:30 - 07:00 2.50 CASE P 07:00 - 12:00 5.00 CASE P 12:00 - 12:15 0.25 CASE P 12:15 - 13:15 1.00 BOPSU P 13:15 - 16:00 2.75 PERFOB~ P 16:00 - 22:00 6.00 PERFO P 22:00 - 22:30 0.50 PERFO P 22:30 - 00:00 1.50 PERFO P 1/7/2006 00:00 - 03:00 3.00 PERFO P 03:00 - 03:30 0.50 PERFO P 03:30 - 04:00 0.50 PERFO P 04:00 - 05:00 I 1.001 PERFOBI P 05:00 - 10:00 5.00 PERFO P 10:00 - 10:30 0.50 PERFO P 10:30 - 14:30 4.00 PERFO P 14:30 - 15:00 0.50 PERFO P 15:00 - 19:00 4.00 PERFO P 19:00 - 19:30 0.50 PERFO P 19:30 - 22:00 I 2.501 PERFOBI P 22:00 - 22:30 0.50 PERFO~ P 22:30 - 23:00 0.50 BOPSU P 23:00 - 00:00 I 1.001 BUNCO Page 11 of 12 Spud Date: 11/17/2005 End: 1 /11 /2006 Pe;~'r~ptior Cf OpCfailOil RUNPRD of 8.5 ppg flo-pro mud. - Reciprocate string as cement going around shoe. ~ -Bump plug w/ 1275 psi & increase pressure to 3500 psi. S/O 50K to ensure hanger set. Bleed off pressure & check floats - floats holding. - Apply 1000 psi to string & P/U string 10' circulating as pressure began to decrease. Circulate 30 bbls @ 10 BPM, 1850 psi to move cement above liner top. - Rotate 20 turns to the right to release HR setting tool. PU to expose dog sub, S/O and set ZXP packer, Saw an indication of shear. Repeat sequence w/ rotation @ 20 RPM to ensure packer set. RUNPRD CBU until hole cleaned up of ChemNet @ 10 bpm. 1870 psi. 30 bbls cement returns seen at surface. RUNPRD Displace well to 8.5 ppg sea water in and out. RUNPRD POH with liner running tool. RUNPRD LD and inspect liner running tool. RUNPRD RU'& Pressure test 4.5 liner to 3500 psi and record on chart for 30 min. Function Test Rams PJSM with Schlumberger TCP and Rig Crew held for picking up pert guns while testing casing. OTHCMP RIH PU 2.5" 4 SPF 2506 Power Jet Omega Guns. 1077" OTHCMP Change out handling equipment to 2-7/8" and RIH PU 122 Jts 2-7/8" PAC DP. OTHCMP Change out handling equipment to 4" and MU XO's OTHCMP RIH with TCP Guns on 4" DP OTHCMP Cont' RIH w/ 2.5" TCP Guns on 4" DP OTHCMP Tag 4.5" landing collar @ 16,632' and place guns on depth. Perf Interval Top shot @ 15,612' Bottom @ 16,630'. OTHCMP PJSM w/ Schlumberger TCP & Rig Crew- Close rams and pressure up to 2800 psi, bleed off pressure and open rams, after 4 min delay guns fired. Monitor well, hole initially took 3 bbls. OTHCMP POH 12 stands pulling guns above perforations, blow down top drive and kill line while monitoring well. Pump dry job. Note: Seawater WT 8.5 ppg. IN and OUT OTHCMP POH Laying down 237 Jts 4" drill pipe 1x1. OTHCMP RIH w/ 14 stands from derrick. OTHCMP POH Laying down remainder of 4" # 15.7 & # 14.0 drill pipe 1x1. OTHCMP RU 2-7/8" handling equipment OTHCMP POH Laying down 122 jts. 2-7/8" PAC drill pipe. OTHCMP PJSM w/ Schlumberger TCP & Rig Crews on laying down 2-1/2" guns. OTHCMP LD 2-1/2" Perf guns. All shots fired. Function Test BOPE. OTHCMP RD handling tools. Clean and clear rig floor of vendors tools. RUNCMP Pull wear bushing and make dummy landing run with tubing hanger. RUNCMP RU 3-1/2" Chrome tubing equipment. 24 hr. Fluid Loss 63 bbls. Printed: 1/16/2006 11:50:15 AM i- BP EXPLORATION Page 12 of 12 Operations Summary Report Legal Well Name: Z-46 Data ~ From..-Tc Houi:; Ta~R Cede NPT Pit~s~. Descripti~Eiof ~~~arations Common Well Name: Z-46 Spud Date: 11/17/2005 Event Name: REENTER+COMPLETE Start: 12/13/2005 End: 1/11/2006 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 1/9/2006 Rig Name: NABOBS 7ES Rig Number: 7ES 1/8/2006 00:00 - 01:30 1.501 RU 01:30 - 02:30 I 1.00 I R 02:30 - 00:00 I 21.50 1 /9/2006 100:00 - 03:30 I 3.50 03:30 - 04:30 I 1.00 04:30 - 05:30 I 1.00 05:30 - 06:00 0.50 06:00 - 07:00 1.00 07:00 - 09:30 I 2.50 09:30 - 11:30 I 2.00 11:30 - 12:00 0.50 BUNCO 12:00 - 13:00 1.00 BUNCO 13:00 - 14:30 1.50 BOPSU P 14:30 - 17:30 3.00 WHSUR P 17:30 - 20:00 I 2.501 WHSUR I P 20:00 - 21:00 1.00 WHSUR P 21:00 - 22:00 1.00 WHSUR P 22:00 - 23:00 1.00 WHSUR P 23:00 - 00:00 I 1.001 WHSUR I P RUNCMP Cont' RU 3-1/2" Chrome tubing tools. RU Halliburton I-Wire spool and hang sheave in derrick. Hold PJSM on running completion w/ I-wire. RUNCMP MU tail pipe, X-nipples, Baker S-3 Packer, Symphony Plus pressure gauge and test same. Torque Turn connections w/ 2900 ft/Ibs. RUNCMP Cont' RIH with 3-1/2" 13Cr-80 completion assembly. Torque Turn connections w/ 2900 fUlbs. Install I-Wire calmps on every joint. 303 jts ran. 24 Hr. Fluid Loss = 38 bbls. RUNCMP Cont' RIH with 3-1/2" 13Cr-80 completion assembly. Torque Turn connections w/ 2900 ft/Ibs. Install I-Wire clamps on every joint. 364 jts ran. RUNCMP Space out tubing string placing WLEG 6' into the 4 1/2" Tie Back Extension. PU 2 Pup joints, 9.89' & 5.83' Up WT-140k, Down WT-80k. WLEG @ 11,845' TOL @ 11,839' RUNCMP Install tubing hanger, Install I-Wire through hanger and test seals to 5000 psi. I-Wire Clamps 374 -Full Clamps 3-1/2" 16 -Half Clamps 3-1/2" 2 -Half Clamps 4-1/2" RUNCMP Land Tubing and run in lock down studs on tubing hanger. RUNCMP RD Tubing equipment, clear rig floor of vendors tool. RU to reverse circulate inhibited seawater. RUNCMP Reverse Circulate 400 bbls 80 deg. 180 bbls Inhibited w/ EC1124A seawater around @ 3 bpm 100 psi. RUNCMP Drop ball & rod -Pressure up on tubing to 3500 psi. and set S-3 packer and record on chart for 30 min. Held. Bleed tubing down to 2000 psi and pressure up on 3-1/2" x 7-5/8" annulus to 3500 psi and record on chart for 30 min packer test. Held. Bleed annulus and tubing to 0 psi. Pressure up on annulus to 2200 psi and shear out DCR shear valve. Pump through DCR in both directions to verify shear at 2 bpm 160 psi. RUNCMP RD and blow down test equipment. RUNCMP LD landing joint. Install TWC and test from below to 1000 psi. RUNCMP ND BOPE. RUNCMP Move 20" Hydril in cellar & NU Adapter flange and tree. Test same to 5000 psi for 15 min. Held. RUNCMP PJSM - RU DSM & Pull TWC with lubricator, RU Little Red to pump freeze protect. RUNCMP Pump 95 bbls 80 deg diesel at 2 bpm 150 psi. RUNCMP Line up and allow diesel to U-Tube into tubing. RUNCMP Install BPV w/ DSM and test from below to 1000 psi. RD Little Red. RUNCMP Install VR plugs in tubing head annulus valves. Secure Tree and Cellar area. Off load fluid from pits. Release Rig from Z-46A @ 23:59 Hrs Printed: 1/16/2006 11:50:15 AM ,, Z-46A Survev Report Client: BP Exploration Alaska Field: Prudhoe Bay Unit - WOA Structure /Slot: Z-PAD / Z-46 Well: Z-46 Borehole: Z-46A UWVAPIN: 500292328001 Survey Name /Date: Z-46A /January 4, 2006 Tort /AHD / DDI / ERD ratio: 485.336° / 12427.23 ft / 7.049 / 1.380 Grid Coordinate System: NAD27 Alaska State Planes, Zone 04, US Feet Location LaUlong: N 7017 51.647, W 14911 32.315 location Grid WE Y/X: N 5959100.060 ftUS, E 599737.580 ftUS Grid Convergence Angle: +0.76041130° Grid Scale Factor: 0.99991130 Vertical Section Azimuth: 167.950° Vertical Section Origin: N 0.000 ft, E 0.000 ft TVD Reference Datum: Rotary Table TVD Reference Elevation: 82.80 ft relative to MSL Sea Bed /Ground Level Elevation: 54.40 ft relative to MSL Magnetic Declination: 24.410° Total Field Strength: 57581.061 nT Magnetic Dip: 80.830° Declination Date: January 03, 2006 Magnetic Declination Model: BGGM 2005 North Reference: True North Total Corr Mag North -> True North: +24.410° Local Coordinates Referenced To: Well Head • Comments Measured Inclination Azimuth Sub-Sea TVD TVD Vertical Along Hole Closure NS EW DLS Northing Fasting latitude Longitude Depth Section Departure ft de de ft ft ft ft ft ft ft de 100 ft ftUS ftUS H I t 0.00 0.00 0.00 -8L.8O 0.00 U.OO 0.00 OAO 0.00 0.00 0.00 5959100.06 599737.58 N 70 17 51.647 W 149 11 32.315 GYD GC SS 97.00 0.25 45.68 14.20 97.00 -0.11 0.21 0.21 0.15 0.15 0.26 5959100.21 599737.73 N 70 17 51.649 W 149 11 32.311 166.00 0.47 167.22 83.20 166.00 0.09 0.52 0.32 -0.02 0.32 0.92 5959100.04 599737.90 N 70 17 51.647 W 149 11 32.306 250.00 1.69 185.42 167.18 249.98 1.62 2.09 1.62 -1.59 0.28 1.49 5959098.47 599737.88 N 70 17 51.632 W 149 11 32.307 Last GYD GC SS 347.00 3.66 165.16 264.07 346.87 6.07 6.58 6.08 -6.01 0.94 2.22 5959094.06 599738.60 N 70 17 51.588 W 149 11 32.288 First MWD+IFR+MS 463.09 8.26 166.73 379.51 462.31 18.12 18.63 18.12 -17.71 3.80 3.96 5959082.40 599741.62 N 70 17 51.473 W 149 11 32.204 553.53 11.39 166.59 468.61 551.41 33.54 34.06 33.55 -32.73 7.37 3.46 5959067.44 599745.38 N 70 17 51.325 W 149 11 32.100 640.98 15.76 170.03 553.60 636.40 54.06 54.57 54.06 -52.83 11.43 5.08 5959047.39 599749.71 N 70 17 51.128 W 149 11 31.982 735.03 19.39 168.93 643.24 726.04 82.44 82.97 82.44 -80.74 16.64 3.88 5959019.55 599755.29 N 70 17 50.853 W 149 11 31.830 830.75 21.97 168.37 732.79 815.59 116.24 116.77 116.24 -113.88 23.30 2.70 5958986.51 599762.39 N 70 17 50.527 W 149 11 31.636 925.21 25.15 169.39 819.36 902.16 153.98 154.52 153.99 -150.93 30.56 3.39 5958949.57 599770.14 N 70 17 50.163 W 149 1 4 1021.46 27.01 170.55 905.81 988.61 196.27 196.83 196.29 -192.59 37.91 2.00 5958908.00 599778.04 N 70 17 49.753 W 149 11 0 1115.45 29.71 170.10 988.51 1071.31 240.87 241.47 240.92 -236.60 45.42 2.88 5958864.11 599786.14 N 70 17 49.320 W 149 11 30.991 1211.97 33.32 169.60 1070.78 f 153.58 291.29 291.92 291.36 -286.25 54.33 3.75 5958814.58 599795.69 N 70 17 48.832 W 149 11 30.732 1308.40 37.10 169.20 1149.55 1232.35 346.86 347.51 346.95 -340.89 64.56 3.93 5958760.09 599806.65 N 70 17 48.295 W 149 11 30.433 1402.14 41.83 168.21 1221.90 1304.70 406.42 407.07 406.51 -399.29 76.25 5.09 5958701.85 599819.12 N 70 17 47.720 W 149 11 30.093 1496.89 45.13 167.90 1290.64 1373.44 471.60 472.26 471.69 -463.07 89.75 3.49 5958638.26 599833.46 N 70 17 47.093 W 149 11 29.699 1591.96 48.61 167.27 1355.63 1438.43 540.97 541.63 541.04 -530.82 104.67 3.69 5958570.73 599849.28 N 70 17 46.427 W 149 11 29.264 1685.09 50.59 166.56 1415.99 1498.79 611.88 612.55 611.92 -599.89 120.74 2.20 5958501.88 599866.25 N 70 17 45.747 W 149 11 28.796 1781.67 54.25 166.77 1474.88 1557.68 688.39 689.07 688.41 -674.36 138.38 3.79 5958427.66 599884.89 N 70 17 45.015 W 149 11 28.282 1876.60 58.36 166.72 1527.53 1610.33 767.33 768.04 767.34 -751.22 156.49 4.33 5958351.05 599904.01 N 70 17 44.259 W 149 11 27.754 1972.23 59.92 166.76 1576.58 1659.38 849.40 850.13 849.41 -831.12 175.32 1.63 5958271.42 599923.89 N 70 17 43.473 W 149 11 27.205 2063.29 59.63 166.85 1622.42 1705.22 928.07 928.81 928.07 -907.72 193.28 0.33 5958195.07 599942.87 N 70 17 42.720 W 149 11 26.682 SurveyEditor Ver SP 1.0 Bid( doc4Ox_56) Z-46~Z-46~Z-46A~Z-46A Generated 2/22/2006 3:34 PM Page 1 of 8 Comments Measured Inclination Azimuth Sub-Sea ND 1•t/p Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth . Section Departure ft de de ft ft ft ft ft ft ft de 100 ft ftUS ftUS "Llby.yy 5/.b:i 7tid.1U 1(i/"L.kf;S 1/5b.0~ IUIU.b(i lUll.:i1 IUlU.Sb -y2S/.yb '11"L.5/ G.L/ by523115.11 5`JyyUJ."L"L N/U1/41.y:i1 VV14y11Ltl.l'LU. 2252.95 58.43 164.59 1722.12 1804.92 1089.29 1090.14 1089.30 -1064.20 232.51 1.68 5958039.14 599984.17 N 70 17 41.181 W 149 11 25.538 2348.04 60.35 163.80 1770.54 1853.34 1170.95 1171.97 1171.00 -1142.94 254.81 2.14 5957960.71 600007.51 N 70 17 40.406 W 149 11 24.889 2442.85 58.27 161.44 1818.93 1901.73 1252.11 1253.50 1252.25 -1220.74 279.14 3.06 5957883.24 600032.87 N 70 17 39.641 W 149 11 24.180 2539.06 59.16 164.45 1868.90 1951.70 1334.01 1335.71 1334.25 -1299.33 303.24 2.83 5957804.99 600058.01 N 70 17 38.868 W 149 11 23.477 2634.17 60.68 164.15 1916.57 1999.37 1416.14 1418.01 1416.47 -1378.56 325.51 1.62 5957726.07 600081.33 N 70 17 38.089 W 149 11 22.828 2729.92 62.75 164.51 1961.94 2044.74 1500.28 1502.32 1500.71 -1459.74 348.28 2.19 5957645.20 600105.17 N 70 17 37.291 W 149 11 22.165 2823.02 62.49 164.36 2004.75 2087.55 1582.80 1585.00 1583.33 -1539.38 370.47 0.31 5957565.87 600128.41 N 70 17 36.507 W 149 11 21.518 2917.78 62.59 164.63 2048.45 2131.25 1666.73 1669.08 1667.36 -1620.40 392.94 0.27 5957485.16 600151.96 N 70 17 35.711 W 149 11 20.863 3011.99 62.68 164.85 2091.75 2174.55 1750.27 1752.75 1751.00 -1701.12 414.96 0.23 5957404.75 600175.04 N 70 17 34.917 W 149 11 20.222 3106.26 62.13 166.44 2135.42 2218.22 1833.74 1836.29 1834.54 -1782.05 435.68 1.60 5957324.11 600196.83 N 70 17 34.121 W 149 1 8 3201.98 60.76 167.93 2181.18 2263.98 1917.80 1920.36 1918.60 -1864.03 454.33 1.98 5957242.40 600216.57 ~ N 70 17 33.314 W 149 1 5 3296.21 60.52 168.62 2227.38 2310.18 1999.93 2002.49 2000.68 -1944.44 471.02 0.69 5957162.22 600234.32 N 70 17 32.524 W 149 11 18.588 3389.95 60.34 168.43 2273.64 2356.44 2081.45 2084.02 2082.15 -2024.34 487.24 0.26 5957082.55 600251.60 N 70 17 31.738 W 149 11 18.116 3485.81 60.15 168.81 2321.21 2404.01 2164.67 2167.24 2165.32 -2105.93 503.66 0.40 5957001.20 600269.10 N 70 17 30.935 W 149 11 17.638 3581.23 59.74 169.09 2369.00 2451.80 2247.25 2249.83 2247.84 -2186.98 519.49 0.50 5956920.36 600286.00 N 70 17 30.138 W 149 11 17.176 3675.85 61.63 168.38 .2415.33 2498.13 2329.74 2332.33 2330.28 -2267.89 535.61 2.10 5956839.68 600303.19 N 70 17 29.342 W 149 11 16.707 3771.30 61.71 168.24 2460.62 2543.42 2413.75 2416.35 2414.27 -2350.17 552.64 0.15 5956757.65 600321.31 N 70 17 28.533 W 149 11 16.211 3866.46 61.49 168.10 2505.89 2588.69 2497.46 2500.06 2497.95 -2432.10 569.80 0.26 5956675.96 600339.55 N 70 17 27.727 W 149 11 15.711 3962.40 59.57 167.64 2553.08 2635.88 2580.98 2583.58 2581.46 -2513.75 587.35 2.04 5956594.55 600358.18 N 70 17 26.924 W 149 11 15.200 4057.67 61.28 167.95 2600.10 2682.90 2663.84 2666.43 2664.30 -2594.74 604.86 1.82 5956513.81 600376.76 N 70 17 26.128 W 149 11 14.690 4151.71 60.74 167.35 2645.68 2728.48 2746.09 2748.69 2746.55 -2675.09 622.45 0.80 5956433.71 600395.42 N 70 17 25.338 W 149 11 14.177 4246.22 61.16 167.09 2691.57 2774.37 2828.71 2831.31 2829.17 -2755.66 640.73 0.51 5956353.39 600414.76 N 70 17 24.545 W 149 11 13.645 4340.89 60.93 167.09 2737.40 2820.20 2911.53 2914.15 2912.01 -2836.41 659.24 0.24 5956272.91 600434.34 N 70 17 23.751 W 149 11 13.106 Tie-In Survey 4421.11 60.83 166.38 2776.44 2859.24 2981.60 2984.23 2982.09 -2904.61 675.32 0.78 5956204.93 600451.32 N 70 17 23.080 W 149 11 12.637 Inc Only 4524.11 56.16 165.50 2830.25 2913.05 3069.33 3072.02 3069.87 -2989.78 696.63 4.59 5956120.06 600473.76 N 70 17 22.243 W 149 11 12.017 Inc Only 4623.97 51.13 165.00 2889.43 2972.23 3149,64 3152.42 3150.23 -3067.53 717.09 5.05 5956042.59 600495.24 N 70 17 21.478 W 149 11 11.421 First MWD+IFR+MS 4719.61 49.56 163.83 2950.46 3033.26 3223.13 3226.05 3223.80 -3138.45 736.86 1.89 5955971.94 600515.96 N 70 17 20.780 W 149 11 45 4812.93 49.23 163.91 3011.20 3094.00 3293.80 3296.90 3294.56 -3206.52 756.54 0.36 5955904.16 600536.54 N 70 17 20.111 W 149 1 1 4906.41 46.13 162.78 3074.13 3156.93 3362.69 3366.01 3363.55 -3272.73 776.33 3.43 5955838.22 600557.20 N 70 17 19.460 W 149 95 5001.25 42.33 159.15 3142.09 3224.89 3428.33 3432.14 3429.36 -3335.26 797.83 4.81 5955775.99 600579.53 N 70 17 18.845 W 149 11 9.069 5096.19 39.54 163.40 3213.82 3296.62 3490.07 3494.32 3491.26 -3394.11 817.85 4.15 5955717.41 600600.32 N 70 17 18.266 W 149 11 8.486 5190.04 36.23 164.19 3287.88 3370.68 3547.54 3551.94 3548.82 -3449.44 833.95 3.56 5955662.30 600617.15 N 70 17 17.722 W 149 11 8.017 5283.72 35.66 164.89 3363.72 3446.52 3602.43 3606.93 3603.78 -3502.44 848.61 0.75 5955609.50 600632.51 N 70 17 17.200 W 149 11 7.590 5377.25 35.48 165.39 3439.80 3522.60 3656.77 3661.34 3658.17 -3555.03 862.56 0.37 5955557.11 600647.16 N 70 17 i 6.683 W 149 11 7.184 5473.22 36.68 163.26 3517.36 3600.16 3713.16 3717.85 3714.65 -3609.43 877.84 1.81 5955502.92 600663.16 N 70 17 16.148 W 149 11 6.739 5567.55 36.17 162.74 3593.26 3676.06 3768.97 3773.86 3770.56 -3663.00 894.22 0.63 5955449.59 600680.24 N 70 17 15.621 W 149 11 6.262 5662.94 36.50 162.79 3670.10 3752.90 3825.25 3830.38 3826.98 -3716.98 910.96 0.35 5955395.84 600697.70 N 70 17 15.090 W 149 11 5.774 5758.74 36.22 163.62 3747.25 3830.05 3881.85 3887.18 3883.70 -3771.35 927.37 0.59 5955341.69 600714.83 N 70 17 14.556 W 149 11 5.296 5854.13 35.90 163.66 3824.37 3907.17 3937.84 3943.32 3939.79 -3825.22 943.19 0.34 5955288.04 600731.36 N 70 17 14.026 W 149 11 4.835 5948.76 35.35 164.04 3901.29 3984.09 3992.82 3998.44 3994.87 -3878.17 958.52 0.63 5955235:31 600747.39 N 70 17 13.505 W 149 11 4.389 SurveyEditor Ver SP 1.0 Bld( doc40x_56) Z-46~Z-46~Z-46A~Z-46A Generated 2/22/2006 3:34 PM Page 2 of 8 Measured Vertical Along Hole Comments Inclination Azimuth Sub•Sea ND ND Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft ft ft ft ft ft de 100 ft ftUS ftUS EiU41.yU :iti.yy lti;i.ti/ 3y/ti.4/ 4Uby.'1/ 4U4/.ti5 4U5J.41 4U4y./y -:iyiU.y/ y/:i.ifl 1./25 5`Jbb12S'G./L bVU/1i3.:S2f IV /U 1 / lL.ytSli VV 14y 11 ;i.`J44 6137.51 37.24 163.52 4052.71 4135.51 4105.17 4111.10 4107.43 -3986.31 990.10 0.28 5955127.60 600780.41 N 70 17 12.441 W 149 11 3.469 6231.24 37.46 163.05 4127.22 4210.02 4161.85 4167.97 4164.23 -4040.77 1006.46 0.38 5955073.37 600797.48 N 70 17 11.906 W 149 11 2.993 6326.26 37.93 163.61 4202.41 4285.21 4219.76 4226.07 4222.27 -4096.43 1023.12 0.61 5955017.94 600814.88 N 70 17 11.358 W 149 11 2.508 6420.80 37.18 163.02 4277.36 4360.16 4277.20 4283.69 4279.83 -4151.63 1039.67 0.88 5954962.97 600832.15 N 70 17 10.815 W 149 11 2.026 6515.35 37.26 162.80 4352.65 4435.45 4334.17 4340.88 4336.94 -4206.29 1056.47 0.16 5954908.54 600849.68 N 70 17 10.278 W 149 11 1.536 6609.74 37.44 163.97 4427.69 4510.49 4391.25 4398.15 4394.15 -4261.17 1072.85 0.78 5954853.89 600866.78 N 70 17 9.738 W 149 11 1.060 6704.73 37.34 163.46 4503.16 4585.96 4448.77 4455.83 4451.79 -4316.53 1089.02 0.34 5954798.75 600883.69 N 70 17 9.194 W 149 11 0.589 6800.14 37.53 163.78 4578.92 4661.72 4506.60 4513.82 4509.74 -4372.17 1105.38 0.28 5954743.34 600900.78 N 70 17 8.646 W 149 11 0.112 6894.49 36.68 162.26 4654.17 4736.97 4563.31 4570.74 4566.59 -4426.61 1121.99 1.33 5954689.13 600918.11 N 70 17 8.111 W 149 10 59.629 6985.90 36.76 161.29 4727.44 4810.24 4617.64 4625.39 4621.11 -4478.52 1139.08 0.64 5954637.45 600935.89 N 70 17 7.600 W 149 1 1 7079.07 36.84 161.96 4802.04 4884.84 4673.11 4681.20 4676.78 -4531.49 1156.68 0.44 5954584.73 600954.18 N 70 17 7.079 W 149 10 .619 7175.09 36.82 161.27 4878.90 4961.70 4730.32 4738.76 4734.19 -4586.11 1174.83 0.43 5954530.36 600973.06 N 70 17 6.542 W 149 10 58.090 7268.96 36.80 161.55 4954.05 5036.85 4786.20 4795.01 4790.29 -4639.42 1192.76 0.18 5954477.30 600991.69 N 70 17 6.018 W 149 10 57.568 7361.55 36.56 162.06 5028.31 5111.11 4841.19 4850.31 4845.48 -4691.96 1210.03 0.42 5954425.00 601009.66 N 70 17 5.501 W 149 10 57.065 7455.52 36.31 161.94 5103.91 5186.71 4896.70 4906.12 4901.18 -4745.04 122728 0.28 5954372.16 601027.60 N 70 17 4.979 W 149 10 56.563 7549.93 36.04 161.07 5180.12 5262.92 4952.07 4961.85 4956.77 -4797.88 1244.95 0.61 5954319.56 601045.98 N 70 17 4.459 W 149 10 56.048 7644.98 35.83 161.00 5257.08 5339.88 5007.44 5017.63 5012.39 -4850.64 1263.08 0.23 5954267.05 601064.80 N 70 17 3.940 W 149 10 55.520 7739.20 35.60 161.05 5333.58 5416.38 5062.04 5072.63 506723 -4902.65 1280.96 0.25 5954215.29 601083.37 N 70 17 3.429 W 149 10 55.000 7833.11 35.40 161.23 5410.04 5492.84 5116.19 5127.17 5121.62 -4954.25 1298.59 0.24 5954163.92 601101.68 N 70 17 2.921 W 149 10 54.486 7927.46 34.99 161.23 5487.14 5569.94 5170.20 5181.55 5175.86 -5005.74 1316.09 0.43 5954112.68 601119.86 N 70 17 2.415 W 149 10 53.977 8023.56 34.59 161.42 5566.06 5648.86 5224.66 5236.38 5230.57 -5057.69 1333.65 0.43 5954060.97 601138.11 N 70 17 1.904 W 149 10 53.466 8118.55 36.62 160.39 5643.29 5726.09 5279.54 5291.68 5285.71 -5109.94 1351.75 2.23 5954008.97 601156.90 N 70 17 1.390 W 149 10 52.939 8212.61 35.62 159.80 5719.27 5802.07 5334.47 5347.12 5340.94 -5162.07 1370.62 1.13 5953957.10 601176.46 N 70 17 0.877 W 149 10 52.389 8306.54 35.78 160.21 5795.55 5878.35 5388.75 5401.93 5395.53 -5213.58 1389.37 0.31 5953905.85 601195.88 N 70 17 0.371 W 149 10 51.844 8401.41 35.13 160.21 5872.82 5955.62 544328 5456.96 5450.36 -5265.36 1408.00 0.69 5953854.33 601215.20 N 70 16 59.861 W 149 10 51.301 8495.80 36.57 162.92 5949.34 6032.14 5498.21 5512.24 5505.53 -5317.80 1425.45 2.27 5953802.13 601233.35 N 70 16 59.346 W 149 10 50.793 8590.27 35.09 160.50 6025.93 6108.73 5553.17 5567.53 5560.73 -5370.30 1442.78 2.17 5953749.86 601251.37 N 70 16 58.829 W 149 1 88 8685.02 33.80 159.97 6104.07 6186.87 5606.28 5621.12 5614.14 -5420.74 1460.90 1.40 5953699.68 601270.16 N 70 16 58.333 W 149 1 1 8778.74 33.89 160.75 6181.91 6264.71 5658.02 5673.32 5666.18 -5469.90. 1478.45 0.47 5953650.76 601288.35 N 70 16 57.850 W 149 1 50 8874.47 35.16 162.26 6260.77 6343.57 5711.93 5727.57 5720.34 -5521.35 1495.64 1.60 5953599.54 601306.23 N 70 16 57.344 W 149 10 48.749 8968.62 36.31 163.44 6337.20 6420.00 5766.70 5782.56 5775.29 -5573.89 1511.85 1.42 5953547.23 601323.13 N 70 16 56.827 W 149 10 48.278 9063.36 35.26 163.04 6414.05 6496.85 5821.91 5837.95 5830.67 -5626.94 1527.82 1.14 5953494.40 601339.80 N 70 16 56.305 W 149 10 47.813 9159.00 35.04 163.41 6492.25 6575.05 5876.78 5893.01 5885.71 -5679.65 1543.72 0.32 5953441.91 601356.39 N 70 16 55.787 W 149 10 47.350 9251.96 37.11 163.09 6567.38 6650.18 5931.33 5947.75 5940.42 -5732.07 1559.49 2.24 5953389.71 601372.86 N 70 16 55.271 W 149 10 46.891 9345.70 37.32 161.94 6642.04 6724.84 5987.77 6004.44 5997.07 -5786.14 1576.53 0.78 5953335.88 601390.61 N 70 16 54.739 W 149 10 46.395 9440.46 37.29 161.76 6717.41 6800.21 6044.88 6061.87 6054.43 -5840.71 1594.42 0.12 5953281.55 601409.22 N 70 16 54.202 W 149 10 45.874 9536.80 37.48 161.82 6793.96 6876.76 6103.03 6120.37 6112.85 -5896.28 1612.70 0.20 5953226.24 601428.23 N 70 16 53.656 W 149 10 45.342 9629.83 38.63 160.20 6867.21 6950.01 6159.95 6177.71 6170.07 -5950.49 1631.37 1.64 5953172.28 601447.62 N 70 16 53.123 W 149 10 44.799 9725.05 38.76 154.94 6941.55 7024.35 6218.46 6237.21 6229.10 -6005.47 1654.07 3.46 5953117.61 601471.04 N 70 16 52.582 W 149 10 44.138 9818.72 38.47 150.70 7014.75 7097.55 6274.86 6295.66 6286.31 -6057.45 1680.75 2.84 5953065.99 601498.41 N 70 16 52.071 W 149 10 43.361 SurveyEditor Ver SP 1.0 Bld( doc40x_56) Z-46~Z-46~Z-46A~Z-46A Generated 2/22/2006 3:34 PM Page 3 of 8 Comments Measured Inclination Azimuth Sub-Sea ND ND Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft ft ft ft ft ft de 100 ft ftUS ftUS 9914. 44 38.39 146.21 7089.75 7172.55 6330.92 6355.13 6343.48 -6108.13 1711 .86 2.92 5953015.74 601530.18 N 70 16 51.572 W 149 10 42.456 10007. 32 38.62 143.70 7162.44 7245.24 6384.14 6412.95 6398.04 -6155.46 1745 .06 i .70 5952968.86 601564.01 N 70 16 51.107 W 149 10 41.489 10100. 07 38.93 138.83 7234.77 7317.57 6436.00 6471.02 6451.55 -6200.74 1781 .38 3.30 5952924.07 601600.93 N 70 16 50.661 W 149 10 40.431 10196. 60 38.63 134.97 7310.03 7392.83 6487.78 6531.46 6505.42 -6244.87 1822 .67 2.52 5952880.50 601642.80 N 70 16 50.227 W 149 10 39.229 10289. 20 39.81 129.28 7381.79 7464.59 6535.19 6589.98 6555.29 -6284.08 1866 .08 4.09 5952841.87 601686.72 N 70 16 49.841 W 149 10 37.965 10384.17 41.14 125.27 7454.04 7536.84 6581.90 6651.61 6605.11 -6321.37 1915.13 3.08 5952805.23 601736.26 N 70 16 49.475 W 149 10 36.536 10479.72 41.95 122.51 7525.56 7608.36 6627.42 6714.98 6654.28 -6356.69 1967.73 2.09 5952770.62 601789.31 N 70 16 49.127 W 149 10 35.005 10574.48 42.04 122.61 7595.99 7678.79 6671.94 6778.38 6702.80 -6390.81 2021.17 0.12 5952737.21 601843.19 N 70 16 48.791 W 149 10 33.449 10669.29 42.23 123.59 7666.30 7749.10 6717.04 6841.98 6752.11 -6425.55 2074.45 0.72 5952703. i 9 601896.93 N 70 16 48.450 W 149 10 31.897 10764.05 43.43 124.16 7735.79 7818.59 6763.32 6906.40 6802.83 -6461.45 2127.93 1.33 5952668.00 601950.88 N 70 16 48.096 W 149 10 30.340 10859.40 44.41 123.44 7804.47 7887.27 6810.77 6972.54 6855.09 -6498.24 2182.89 1.15 5952631.94 602006.32 N 70 16 47.734 W 1491 ~9 10954.54 44.22 122.31 7872.55 7955.35 6857.71 7039.00 6907.18 -6534.32 2238.71 0.85 5952596.61 602062.60 N 70 16 47.379 W 149 10 114 11048.58 43.22 121.12 7940.51 8023.31 6902.67 7104.00 6957.55 -6568.49 2294.00 1.38 5952563.18 602118.33 N 70 16 47.043 W 149 10 25.504 11143.73 42.40 120.32 8010.31 8093.11 6946.58 7168.66 7007.19 -6601.53 2349.58 1.03 5952530.89 602174.34 N 70 16 46.718 W 149 10 23.886 11237.09 42.15 119.77 8079.39 8162.19 6988.68 7231.46 7055.16 -6632.97 2403.94 0.48 5952500.18 602229.11 N 70 16 46.409 W 149 10 22.303 11334.18 43.43 119.80 8150.64 8233.44 7032.67 7297.41 7105.59 -6665.73 2461.18 1.32 5952468.18 602286.78 N 70 16 46.086 W 149 10 20.636 11428.75 43.30 120.68 8219.39 8302.19 7076.36 7362.35 7155.82 -6698.43 2517.28 0.65 5952436.23 602343.30 N 70 16 45.764 W 149 10 19.002 11521.70 43.98 121.52 8286.66 8369.46 7120.23 7426.49 7206.27 -6731.57 2572.21 0.96 5952403.83 602398.65 N 70 16 45.438 W 149 10 17.403 11617.04 44.77 121.51 8354.81 8437.61 7166.18 7493.17 7259.23 -6766.42 2629.05 0.83 5952369.73 602455.95 N 70 16 45.095 W 149 10 15.748 11713.67 45.06 120.61 8423.24 8506.04 7212.81 7561.39 7313.32 -6801.62 2687.49 0.72 5952335.32 602514.85 N 70 16 44.749 W 149 10 14.046 11808.98 44.89 119.50 8490.66 8573.46 7257.97 7628.76 7366.24 -6835.36 2745.80 0.84 5952302.36 602573.59 N 70 16 44.417 W 149 10 12.349 1 f 903.84 44.54 118.50 8558.07 8640.87 7301.81 7695.50 7418.15 -6867.72 2$04.17 0.83 5952270.78 602632.38 N 70 16 44.099 W 149 10 10.649 MWD+IFR+MS 11945.86 44.82 117.55 8587.95 8670.75 7320.83 7725.04 7440.88 -6881.60 2830.25 1.72 5952257.25 602658.64 N 70 16 43.962 W 149 10 9.890 Inc Only 12014.00 45.44 117.82 8636.02 8718.82 7351.70 7773.34 7477.96 -6904.04 2873.01 0.95 5952235.38 602701.69 N 70 16 43.741 W 149 10 8.645 First MWp+SAG 12045.39 48.50 117.94 8657.44 8740.24 7366.42 7796.28 7495.67 -6914.77 2893.29 9.75 5952224.93 602722.11 N 70 16 43.635 W 149 10 8.054 12077.79 56.50 118.19 8677.15 8759.95 7382.97 7821.96 7515.59 -6926.85 2915.95 24.70 5952213.14 602744.93 N 70 16 43.517 W 149 10 7.394 12109.51 63.61 117.74 8692.97 8775.77 7400.63 7849.43 7536.89 -6939.73 2940.22 22.45 5952200.59 602769.36 N 70 16 43.390 W 149 10 6.688 12142.08 70.29 117.44 8705.72 8788.52 7419.74 7879.38 7560.04 -6953.60 2966.76 20.53 5952187.07 602796.09 N 70 16 43.253 W 149 1 15 Last MWD+SAG 12158.17 69.65 116.51 8711.23 8794.03 7429.26 7894.50 7571.64 -6960.46 2980.23 6.73 5952180.40 602809.65 N 70 16 43.186 W 149 3 MWD+IFR+MS 12173.09 66.80 117.45 8716.76 8799.56 7437.98 7908.35 7582.28 -6966.74 2992.58 19.98 5952174.28 602822.08 N701643.124 W 149 63 12206.21 67.17 118.06 8729.71 8812.51 7457.50 7938.84 7606.00 -6980.94 3019.56 2.03 5952160.44 602849.24 N 70 16 42.984 W 149 10 4.378 12237.60 71.48 117.12 8740.79 8823.59 7476.22 7968.20 7628.83 -6994.53 3045.58 14.01 5952147.19 602875.43 N 70 16 42.850 W 149 10 3.620 12268.01 74.77 116.89 8749.62 8832.42 7494.56 7997.30 7651.31 -7007.74 3071.51 10.84 5952134.33 602901.53 N 70 16 42.720 W 149 10 2.865 12301.30 78.69 115.43 8757.26 8840.06 7514.59 8029.69 7676.09 -7022.02 3100.58 12.52 5952120.44 602930.79 N 70 16 42.580 W 149 10 2.018 12333.81 81.42 109.45 8762.88 8845.68 7532.71 8061.71 7699.24 -7034.23 3130.16 19.97 5952108.62 602960.53 N 70 16 42.460 W 149 10 1.157 12365.86 80.80 114.61 8767.83 8850.63 7550.44 8093.37 7722.05 -7046.10 3159.51 16.02 5952097.14 602990.03 N 70 16 42.343 W 149 10 0.303 12396.37 80.98 113.80 8772.66 8855.46 7568.26 8123.50 7744.59 -7058.45 3186.98 2.69 5952085.16 603017.66 N 70 16 42.221 W 149 9 59.503 12428.97 80.75 113.85 8777.84 8860.64 7587.12 8155.68 7768.58 -7071.46 3216.43 0.72 5952072.55 603047.27 N 70 16 42.093 W 149 9 58.645 12460.26 84.35 107.31 8781.90 8864.70 7603.83 8186.70 7790.55 -7082.35 3245.46 23.70 5952062.05 603076.44 N 70 16 41.986 W 149 9 57.800 12492.35 85.53 106.04 8784.73 8867.53 7619.19 8218.67 7811.68 -7091.52 3276.07 5.39 5952053.28 603107.17 N 70 16 41.896 W 149 9 56.909 SurveyEditor Ver SP 1.0 Bld( doc40x_56) Z-46~Z-46~Z-46A~Z-46A Generated 2/22/2006 3:34 PM Page 4 of 8 Comments Measured Inclination Azimuth Sub•Sea ND ND Vertical Along Hole Closure NS EW DLS Northing Easting latitude Longitude Depth Section Departure ft de de ft ft ft ft h ft ft de 100 ft ftUS ftUS 1L514.13 8fi.'~'1 1U3.8y 8/8/.03 tStStiy.ti;i /tii:i.Ei4 k3'L5U.4/ /2S:i1.Ub -/Vyy./3 :iiUli./y /.Ud by5LU45.425 (iU31;~t5. UU N /U ltl 41.2315 W 14y y bli.U14 12556.27 85.63 98.06 8789.31 8872.11 7646.13 8282.42 7850.85 -7105.81 3338.15 18.24 5952039.82 603169. 43 N 70 16 41.755 W 149 9 55.101 12588.30 84.01 93.29 8792.20 8875.00 7655.84 8314.32 7867.24 -7108.97 3369.88 15.67 5952037.08 603201. 20 N 70 16 41.724 W 149 9 54.177 12620.30 80.80 88.85 8796.43 8879.23 7663.04 8346.04 7881.41 -7109.56 3401.59 17.02 5952036.91 603232. 90 N 70 16 41.718 W 149 9 53.254 12651.05 78.02 86.16 8802.08 8884.88 7668.06 8376.26 7893.31 -7108.25 3431.78 12.48 5952038.62 603263. 07 N 70 16 41.730 W 149 9 52.374 12684.07 73.55 85.49 8810.19 8892.99 7672.45 8408.26 7905.14 -7105.92 3463.69 13.68 5952041.37 603294. 95 N 70 16 41.753 W 149 9 51.445 12715.41 70.87 86.51 8819.77 8902.57 7676.62 8438.10 7916.36 -7103.84 3493.46 9.10 5952043.85 603324. 68 N 70 16 41.773 W 149 9 50.578 12747.65 71.44 83.85 8830.18 8912.98 7680.46 8468.61 7927.53 -7101.27 3523.86 8.01 5952046.82 603355. 04 N 70 16 41.799 W 149 9 49.693 12779.92 73.09 86.59 8840.01 8922.81 7684.36 8499.34 7938.90 -7098.72 3554.48 9.57 5952049.78 603385. 63 N 70 16 41.824 W 149 9 48.801 12811.14 73.91 85.45 8848.88 8931.68 7688.56 8529.28 7950.46 -7096.64 3584.35 4.38 5952052.25 603415. 46 N 70 16 41,844 W 149 9 47.931 12843.27 78.24 87.17 8856.61 8939.41 7693.09 8560.46 7962.75 -7094.64 3615.46 14.44 5952054.67 603446. 54 N 70 16 41.863 W 149 5 12875.49 79.27 84.18 8862.89 8945.69 7697.34 8592.06 7974.99 -7092.25 3646.97 9.65 5952057.47 603478. 01 N 70 16 41.887 W 149 ~7 12905.97 79.48 79.05 8868.52 8951.32 7699.25 8622.01 7984.70 -7087.89 3676.59 16.56 5952062.23 603507. 57 N 70 16 41.929 W 149 9 45 12938.41 78.35 74.82 8874.76 8957.56 7698.69 8653.85 7992.65 -7080.69 3707.60 13.26 5952069.83 603538. 47 N 70 16 42.000 W 149 9 44.342 12970.10 78.30 72.03 8881.17 8963.97 7696.24 8684.88 7998.66 -7071.84 3737.34 8.62 5952079.08 603568. 09 N 70 16 42.087 VV 149 9 43.475 13002.98 78.57 69.99 8887.76 8970.56 7692.35 8717.10 8003.69 -7061.36 3767.79 6.13 5952089.96 603598. 41 N 70 16 42.190 W 149 9 42.588 13035.47 77.64 64.73 8894.47 8977.27 7686.51 8748.89 8006.77 -7049.13 3797.13 16.10 5952102.58 603627. 57 N 70 16 42.310 W 149 9 41.734 13065.82 78.51 62.98 8900.74 8983.54 7679.28 8778.58 8007.95 -7036.04 3823.78 6.33 5952116.02 603654. 05 N 70 16 42.439 W 149 9 40.957 13098.43 79.22 63.33 8907.03 8989.83 7671.11 8810.58 8008.95 -7021.59 3852.33 2.42 5952130.84 603682. 40 N 70 16 42.581 W 149 9 40.126 13129.60 82.05 63.37 8912.11 8994.91 7663.36 8841.33 8010.13 -7007.80 3879.81 9.08 5952145.00 603709. 69 N 70 16 42.716 W 149 9 39.325 13161.41 84.11 61.46 8915.94 8998.74 7654.90 8872.90 8010.96 -6993.18 3907.80 8.80 5952159.99 603737.48 N 70 16 42.860 W 149 9 38.510 13194.17 86.67 61.32 8918.57 9001.37 7645.60 8905.56 8011.36 -6977.54 3936.46 7.83 5952176.00 603765.93 N 70 16 43.013 W 149 9 37.675 13225.42 91.26 63.58 8919.14 9001.94 7637.25 8936.79 8012.44 -6963.10 3964.16 16.37 5952190.81 603793.43 N 70 16 43.155 W 149 9 36.868 13258.65 92.72 64.32 8917.98 9000.78 7629.22 8970.00 8014.60 -6948.51 3993.99 4.93 5952205.79 603823.07 N 70 16 43.299 W 149 9 35.999 i 3290.05 93.91 67.13 8916.17 8998.97 7622.58 9001.35 8017.73 -6935.63 4022.56 9.70 5952219.05 603851.46 N 70 16 43.425 W 149 9 35.167 13320.89 93.64 64.73 8914.14 8996.94 7616.17 9032.12 8021.02 -6923.08 4050.66 7.81 5952231.97 603879.38 N 70 16 43.548 W 149 9 34.348 13353.60 92.43 66.13 8912.40 8995.20 7609.09 9064.78 8024.37 -6909.50 4080.36 5.65 5952245.95 603908.90 N 70 16 43.682 W 149 9 33.483 13385.39 93.04 67.53 8910.89 8993.69 7602.97 9096.54 8028.52 -6897.00 4109.56 4.80 5952258.82 603937.92 N 70 16 43.805 W 149 9 32.633 13416.26 92.13 69.35 8909.49 8992.29 7597.87 9127.38 8033.52 -6885.67 4138.24 6.59 5952270.53 603966.45 N 70 16 43.916 W 149 7 13449.11 92.84 69.83 8908.07 8990.87 7593.10 9160.20 8039.62 -6874.23 4168.99 2.61 5952282.39 603997.05 N 70 16 44.028 W 149 1 ~ 13481.17 91.72 68.58 8906.79 8989.59 7588.23 9192.23 8045.49 -6862.85 4198.94 5.23 5952294.15 604026.84 N 70 16 44.140 W 149 9 30.029 13512.48 91.04 67.74 8906.04 8988.84 7582.91 9223.53 8050.78 -6851.21 4227.99 3.45 5952306.18 604055.74 N 70 16 44.254 W 149 9 29.183 13544.62 91.82 68.85 8905.24 8988.04 7577.52 9255.66 8056.40 -6839.33 4257.85 4.22 5952318.46 604085.42 N 70 16 44.371 W 149 9 28.313 13576.52 92.95 68.85 8903.91 8986.71 7572.48 9287.53 8062.41 -6827.83 4287.57 3.54 5952330.35 604114.99 N 70 16 44.484 W 149 9 27.447 13607.53 93.16 69.11 8902.26 8985.06 7567.65 9318.50 8068.43 -6816.72 4316.48 1.08 5952341.84 604143.74 N 70 16 44.593 W 149 9 26.605 13639.94 90.75 68.89 8901.15 8983.95 7562.61 9350.89 8074.87 -6805.11 4346.71 7.47 5952353.85 604173.82 N 70 16 44.707 W 149 9 25.725 13672.41 91.28 68.97 8900.58 8983.38 7557.52 9383.35 8081.40 -6793.44 4377.01 1.65 5952365.92 604203.95 N 70 16 44.822 W 149 9 24.842 13703.62 91.89 66.67 8899.71 8982.51 7552.03 9414.55 8087.20 -6781.66 4405.90 7.62 5952378.07 604232.68 N 70 16 44.937 W 149 9 24.001 13734.95 92.35 65.62 8898.56 8981.36 7545.63 9445.86 8092.25 -6769.00 4434.53 3.66 5952391.11 604261.14 N 70 16 45.062 W 149 9 23.166 13766.69 92.93 64.42 8897.09 8979.89 7538.53 9477.56 8096.86 -6755.61 4463.27 4.20 5952404.88 604289.70 N 70 16 45.193 W 149 9 22.329 13798.33 91.11 64.41 8895.98 8978.78 7531.13 9509.18 8101.24 -6741.96 4491.79 5.75 5952418.91 604318.03 N 70 16 45.327 W 149 9 21.498 SurveyEditor Ver SP 1.0 Bld( doc40x_56) Z-46~Z-46~Z-46A~Z-46A Generated 2/22/2006 3:34 PM Page 5 of 8 P-. Comments Measured Inclination Azimuth Sub-Sea ND ND Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure n de de n ft ft ft n n ft de 100 ft ftUS ftUS 13tf;SU./l 91.:11 (ib.Lb tStSyb."Ly tly/tf. Uy /5L:i. /y yb4l.bd tS1Uti.Vy -b/"1t5.1`J 45G1.Uy 1.ti/ bybL4:iJ.U/ 13862.33 91.88 65.20 8894.41 8977. 21 7516. 82 9573. 16 8111.17 -6714.94 4549.78 1.81 5952446.69 13894.01 92.54 66.18 8893.19 8975. 99 7510. 10 9604. 82 8116.62 -6701.91 4578.63 3.73 5952460.10 13928.62 93.23 64.49 8891.45 8974. 25 7502. 55 9639. 39 8122.50 -6687.49 4610.04 5.27 5952474.94 13958.42 92.88 64.70 8889.86 8972. 66 7495. 68 9669. 14 8127.30 -6674.72 4636.92 1.37 5952488.06 13990.63 93.11 66.64 8888.18 8970. 98 7488. 84 9701. 31 8133.20 -6661.47 4666.23 6.06 5952501.70 14023.02 91.78 67.45 8886.80 8969. 60 7482. 72 9733. 67 8140.02 -6648.85 4696.03 4.81 5952514.71 14053.93 90.69 69.23 8886.13 8968. 93 7477. 56 9764. 57 8147.33 -6637.45 4724.75 6.75 5952526.50 14085.64 91.13 69.48 8885.63 8968. 43 7472. 82 9796. 28 8155.48 -6626.27 4754.42 1.60 5952538.07 14118.29 91.51 70.69 8884.88 8967. 68 7468. 35 9828. 92 8164.40 -6615.15 4785.11 3.88 5952549.59 14149.73 91.61 71.17 8884.02 8966. 82 7464. 51 9860. 35 8173.55 -6604.88 4814.81 1.56 5952560.25 14181.50 90.44 72.34 8883.45 8966. 25 7461. 08 9892. 11 8183.34 -6594.94 4844.98 5.21 5952570.60 14213.88 90.51 74.93 8883.18 8965. 98 7458. 65 9924. 49 8194.43 -6585.81 4876.04 8.00 5952580.13 14245.57 91.73 78.44 8882.56 8965. 36 7457. 95 9956. 17 8206.96 -6578.52 4906.87 11.72 5952587.83 14277.81 92.37 80.12 8881.41 8964. 21 7458. 70 9988. 39 8221.14 -6572.52 4938.52 5.57 5952594.25 14308.97 92.16 82.16 8880.18 8962. 98 7460. 43 10019. 53 8235.83 -6567.73 4969.29 6.58 5952599.45 14341.86 92.50 85.09 8878.84 8961. 64 7463. 68 10052. 39 8252.67 -6564.08 5001.94 8.96 5952603.53 14373.18 91.99 89.16 8877.61 8960. 41 7468. 67 10083. 69 8270.40 -6562.51 5033.19 13.09 5952605.51 14405.21 92.06 90.19 8876.48 8959. 28 7475. 17 10115. 70 8289.78 -6562.33 5065.20 3.22 5952606.12 14437.53 92.54 89.34 8875.18 8957. 98 7481. 78 10147. 99 8309.45 -6562.20 5097.50 3.02 5952606.68 14468.27 92.90 89.32 8873.73 8956. 53 7487. 84 10178. 70 8328.03 -6561.84 5128.20 1.17 5952607.45 14501.40 91.80 90.61 8872.37 8955. 17 7494. 73 10211. 80 8348.44 -6561.82 5161.30 5.11 5952607.91 14533.41 91.48 92.19 8871.45 8954. 25 7502. 18 10243. 79 8368.87 -6562.60 5193.29 5.03 5952607.55 14565.37 89.20 93.65 8871.26 8954. 06 7510. 43 10275. 75 8389.98 -6564.23 5225.20 8.47 5952606.34 14596.88 88.23 95.16 8871.97 8954. 77 7519. 35 10307. 25 8411.47 -6566.65 5256.61 5.69 5952604.34 14628.60 85.94 94.10 8873.58 8956. 38 7528. 45 10338. 93 8433.23 -6569.20 5288.18 7.95 5952602.20 14659.58 85.46 92.25 8875.90 8958. 70 7536. 56 10369. 82 8453.93 -6570.92 5319.03 6.15 5952600.90 14692.14 84.21 92.99 8878.83 8961. 63 7544. 77 10402. 25 8475.50 -6572.40 5351.42 4.46 5952599.85 14724.50 84.50 93.48 8882.02 8964. 82 7553. 26 10434. 45 8497.24 -6574.21 5383.57 1.75 5952598.46 14755.81 84.74 94.16 8884.95 8967. 75 7561. 78 10465. 62 8518.58 -6576.29 5414.67 2.29 5952596.80 14787.55 85.06 93.91 8887.78 8970. 58 7570. 54 10497. 24 8540.38 -6578.52 5446.21 1.28 5952594.99 14820.18 85.75 94.53 8890.39 8973. 19 7579. 66 10529. 76 8562.94 -6580.91 5478.64 2.84 5952593.03 14851.36 84.55 95.96 8893.03 8975. 83 7588. 89 10560. 83 8584.94 -6583.75 5509.58 5.97 5952590.60 14883.73 83.67 96.82 8896.35 8979. 15 7599. 08 10593. 03 8608.26 -6587.33 5541.58 3.79 5952587.44 14914,65 84.11 97.26 8899.64 8982. 44 7609. 13 10623. 78 8630.81 -6591.10 5572.09 2.01 5952584.08 14946.39 85.48 100.01 8902.52 8985. 32 7620. 29 10655. 38 8654.63 -6595.85 5603.34 9.65 5952579.75 14979.02 88.61 99.16 8904.20 8987. 00 7632. 31 10687. 97 8679.59 -6601.27 5635.47 9.94 5952574.75 15010.21 91.24 99.31 8904.24 8987. 04 7643. 63 10719. 15 8703.41 -6606.28 5666.25 8.45 5952570.16 15042.38 91.99 98.55 8903.33 8986. 13 7655. 14 10751. 31 8727.90 -6611.27 5698.02 3.32 5952565.59 15074.66 92.05 98.69 8902.20 8985. 00 7666. 53 10783. 57 8752.41 -6616.10 5729.91 0.47 5952561.18 15106.85 92.90 98.85 8900.81 8983. 61 7677. 96 10815. 73 8776.95 -6621.01 5761.70 2.69 5952556.69 tlU4:i4/.14 N /U 1ti45.4b:i VV 1499'LU.ti45 604375.66 N 70 16 45.593 W 149 9 19.809 604404.33 N 70 16 45.721 W 149 9 18.968 604435.54 N 70 16 45.862 W 149 9 18.053 604462.25 N 70 16 45.988 W 149 9 17.270 604491.38 N 70 16 46.118 W 149 9 16.417 604521.00 N 70 16 46.242 W 149 9 15.548 604549.56 N 70 16 46.354 W 149 9 14.712 604579.08 N 70 i 6 46.464 W 149 9 13.848 604609.62 604639.18 604669.21 604700.14 604730.87 604762.44 604793.13 604825.73 604856.96 604888.96 N 70 16 46.573 N 70 16 46.674 N 70 16 46.771 N 70 16 46.861 N 70 16 46.932 N 70 16 46.991 N 70 16 47.038 N 70 16 47.074 N 70 16 47.089 N 70 16 47.090 W 149 9 12.954 W 149 88 W 149 0 W 149 9 . 05 W 149 9 9.407 W 149 9 8.485 W 149 9 7.589 W 149 9 6.637 W 149 9 5.727 W 149 9 4.795 604921.24 N 70 16 47.091 W 149 9 3.855 604951.94 N 70 16 47.095 W 149 9 2.960 604985.03 N 70 16 47.095 W 149 9 1.996 605017.02 N 70 i 6 47.087 W 149 9 1.065 605048.95 N 70 16 47.071 W 149 9 0.135 605080.39 N 70 16 47.047 W 149 8 59.221 605111.99 N 70 16 47.021 W 149 8 58.301 605142.85 N 70 16 47.004 W 149 8 57.403 605175.26 N 70 16 46.989 W 149 8 56.459 605207.43 N 70 16 46.971 W 149 23 605238.55 N 70 16 46.951 W 149 17 605270.11 N 70 16 46.929 W 149 8 53.699 605302.57 N 70 16 46.905 W 149 8 52.754 605333.54 N 70 16 46.877 W 149 8 51.853 605365.58 N 70 16 46.841 W 149 8 50.921 605396.14 N 70 16 46.804 W 149 8 50.033 605427.44 N 70 16 46.757 W 149 8 49.123 605459.64 N 70 16 46.703 W 149 8 48.187 605490.48 N 7016 46.654 W 149 8 47.291 605522.31 N 70 16 46.605 W 149 8 46.366 605554.26 N 70 16 46.557 W 149 8 45.437 605586.11 N 70 16 46.508 W 149 8 44.512 SurveyEditor Ver SP 1.0 Bld( doc40x_56) Z-46~Z-46~Z-46A~Z-46A Generated 2/22/2006 3:34 PM Page 6 of 8 Comments Measured Inclination Azimuth Sub•Sea ND ND Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft ft ft ft ft ft de 100 ft ftUS ftUS 15137.83 94.4L 97.88 8898.83 8981.63 7688.74 10846.65 8800.45 -66L5.5U 5/9Z.LS 5.82 5952552.60 605616.75 N /U 16 46.464 W 149 8 43.621 15170.55 95.19 99.24 8896.09 8978.89 7700.22 10879.25 8825.34 -6630.36 5824.52 4.76 5952548.18 605649.05 N 70 16 46.416 W 149 8 42.682 15202.09 95.76 99.40 8893.08 8975.88 7711.66 10910.65 8849.63 -6635.44 5855.50 1.88 5952543.51 605680.09 N 70 16 46.366 W 149 8 41.780 15234.13 94.76 98.49 8890.14 8972.94 7723.09 10942.55 8874.23 -6640.40 5887.02 4.21 5952538.97 605711.67 N 70 16 46.317 W 149 8 40.862 15266.13 94.55 99.94 8887.54 8970.34 7734.66 10974.45 8898.96 -6645.51 5918.50 4,56 5952534.28 605743.21 N 70 16 46.266 W 149 8 39.945 15298.74 94.09 98.58 8885.09 8967.89 7746.48 11006.96 8924.23 -6650.74 5950.60 4.39 5952529.47 605775.37 N 70 16 46.214 W 149 8 39.011 15329.52 94.16 97.49 8882.87 8965.67 7757.02 11037.66 8947.72 -6655.03 5980.99 3.54 5952525.58 605805.82 N 70 16 46.172 W 149 8 38.126 15361.88 93.99 94.19 8880.57 8963.37 7766.93 11069.94 8971.65 -6658.32 6013.10 10.19 5952522.73 605837.96 N 70 16 46.139 W 149 8 37.191 15393.46 93.45 91.60 8878.52 8961.32 7775.06 11101.45 8993.95 -6659.91 6044.57 8.36 5952521.55 605869.45 N 70 16 46.124 W 149 8 36.274 15425.23 93.85 92.76 8876.50 8959.30 7782.85 11133.16 9016.17 -6661.11 6076.25 3.86 5952520.77 605901.14 N 70 16 46.111 W 149 8 35.351 15456.52 94.00 92.01 8874.36 8957.16 7790.63 11164.38 9038.17 -6662.41 6107.44 2.44 5952519.88 605932.34 N 70 16 46.098 W 149 3 15489.14 94.42 92.45 8871.97 8954.77 7798.66 11196.91 9061.10 -6663.68 6139.95 1.86 5952519.05 605964.86 N 70 16 46.086 W 149 6 15521.25 94.01 92.96 8869.60 8952.40 7806.81 11228.93 9083.92 -6665.19 6171.94 2.03 5952517.96 605996.86 N 70 16 46.071 W 149 8 65 15553.46 92.10 95.30 8867.89 8950.69 7815.78 11261.09 9107.44 -6667.51 6204.01 9.37 5952516.07 606028.96 N 70 16 46.048 W 149 8 31.631 15584.72 90.67 96.21 8867.13 8949.93 7825.33 11292.34 9130.94 -6670.64 6235.11 5.42 5952513.35 606060.09 N 70 16 46.017 W 149 8 30.725 15615.52 90.56 96.10 8866.80 8949.60 7834.95 11323.14 9154.28 -6673.94 6265.73 0.51 5952510.46 606090.75 N 70 16 45.984 W 149 8 29.834 15649.18 91.38 96.48 8866.23 8949.03 7845.54 11356.80 9179.89 -6677.63 6299.18 2.68 5952507.21 606124.25 N 70 16 45.947 W 149 8 28.859 15680.62 90.88 95.69 8865.61 8948.41 7855.33 11388.23 9203.79 -6680.96 6330.44 2.97 5952504.30 606155.54 N 70 16 45.914 W 149 8 27.949 15711.40 90.06 95.65 8865.36 8948.16 7864.70 11419.01 9227.08 -6684.00 6361.06 2.67 5952501.66 606186.20 N 70 16 45.884 W 149 8 27.057 15743.71 90.47 95.11 8865.21 8948.01 7874.37 11451.32 9251.48 -6687.03 6393.23 2.10 5952499.06 606218.41 N 70 16 45.854 W 149 8 26.120 15776.09 91.58 95.59 8864.63 8947.43 7884.05 11483.69 9275.96 -6690.05 6425.46 3.73 5952496.47 606250.67 N 70 16 45.824 W 149 8 25.182 15807.40 91.64 94.08 8863.75 8946.55 7893.15 11514.99 9299.48 -6692.69 6456.65 4.82 5952494.25 606281.89 N 70 16 45.798 W 149 8 24.274 15839.66 90.30 93.79 886321 8946.01 7902.03 11547.25 9323.44 -6694.90 6488.83 4.25 5952492.46 606314.09 N 70 16 45.776 W 149 8 23.336 15872.02 90.80 96.11 8862.89 8945.69 7911.49 11579.60 9347.91 -6697.69 6521.06 7.33 5952490.10 606346.36 N 70 16 45.748 W 149 8 22.398 15903.18 91.52 96.81 8862.26 8945.06 7921.38 11610.76 9372.03 -6701.20 6552.02 3.22 5952487.00 606377.35 N 70 16 45.713 W 149 8 21.496 15935.77 91.93 97.01 8861.28 8944.08 7931.96 11643.33 9397.47 -6705.12 6584.36 1.40 5952483.52 606409.74 N 70 16 45.675 W 149 8 20.555 15967.69 91.09 96.78 8860.44 8943.24 7942.32 11675.24 9422.42 -6708.95 6616.04 2.73 5952480.11 606441.46 N 70 16 45.637 W 149 8 19.632 15998.98 90.45 96.74 8860.02 8942.82 7952.41 11706.53 9446.87 -6712.63 6647.11 2.05 5952476.84 606472.57 N 70 16 45.600 W 149 8 18.727 16031.32 90.85 96.38 8859.65 8942.45 7962.73 11738.87 9472.13 -6716.33 6679.23 1.66 5952473.57 606504.74 N 70 16 45.563 W 149 ~2 16063.25 90.51 96.71 8859.28 8942.08 7972.91 11770.79 9497.09 -6719.97 6710.95 1.48 5952470.35 606536.51 N 70 16 45.527 W 149 68 16094.72 90.83 96.50 8858.91 8941.71 7982.98 11802.26 9521.76 -6723.59 6742.21 1.22 5952467.15 606567.81 N 70 16 45.492 W 149 8 15.958 16126.69 90.92 96.87 8858.42 8941.22 7993.24 11834.23 9546.89 -6727.31 6773.96 1.19 5952463.85 606599.60 N 70 16 45.455 W 149 8 15.033 16158.79 90.98 98.25 8857.89 8940.69 8004.01 11866.32 9572.46 -6731.53 6805.77 4.30 5952460.05 606631.47 N 70 16 45.413 W 149 8 14.107 16190.03 91.58 98.07 8857.19 8939.99 8014.80 11897.56 9597.58 -6735.96 6836.69 2.01 5952456.03 606662.43 N 70 16 45.369 W 149 8 13.207 16222.46 89.24 97.93 8856.96 8939.76 8025.92 11929.98 9623.64 -6740.47 6868.80 7.23 5952451.94 606694.60 N 70 16 45.324 W 149 8 12.272 16254.43 88.77 99.13 8857.51 8940.31 8037.16 11961.95 9649.54 -6745.22 6900.41 4.03 5952447.62 606726.27 N 70 16 45.277 W 149 8 11.351 16286.16 89.20 99.50 8858.07 8940.87 8048.71 11993.67 9675.53 -6750.35 6931.72 1.79 5952442.90 606757.64 N 70 16 45.227 W 149 8 10.439 16317.62 89.67 100.93 8858.38 8941.18 8060.63 12025.13 9701.62 -6755.93 6962.68 4.78 5952437.73 606788.66 N 70 16 45.171 W 149 8 9.538 16349.89 89.93 100.34 8858.50 8941.30 8073.08 12057.40 9728.55 -6761.89 6994.39 2.00 5952432.20 606820.45 N 70 16 45.113 W 149 8 8.614 16382.04 91.33 100.68 8858.14 8940.94 8085.41 12089.55 9755.36 -6767.75 7026.00 4.48 5952426.76 606852.13 N 70 16 45.055 W 149 8 7.694 16413.72 91.92 100.85 8857.25 8940.05 8097.69 12121.22 9781.89 -6773.66 7057.11 1.94 5952421.26 606883.32 N 70 16 44.996 W 149 8 6.788 SurveyEditor Ver SP 1.0 Bld( doc40x_56) Z-46~Z-46~Z-46A~Z-46A Generated 2/22/2006 3:34 PM Page 7 of 8 Measured Vertical Along Hole Comments Inclination Azimuth Sub-Sea ND ND Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft ft ft ft ft ft de 100 ft ftUS ftUS 1 b44b.l :i yL.4/ `J`J.Ub 232f5t3.U4 23y;723.234 231 Vy.bV 1L15L.UV yi3V23.V5 -b//y.Gb /V2323.VV 4.LV OybL41p.V23 bVby 14.L/ IV /V Iq 44.`J41 VV 14y ZS O.iStly 16477.23 94.62 99.48 8854.06 8936.86 8121.40 12184.64 9834.58 -6784.57 7119.59 6.72 5952411.18 606945.93 N 70 16 44.888 W 149 8 4.969 16509.08 94.18 100.84 8851.61 8934.41 8133.41 12216.40 9861.09 -6790.17 7150.84 4.48 5952405.99 606977.25 N 70 16 44.833 W 149 8 4.059 16540.76 94.52 101.70 8849.21 8932.01 8145.91 12247.98 9887.82 -6796.35 7181.82 2.91 5952400.23 607008.31 N 70 16 44.772 W 149 8 3.157 16573.02 94.92 102.63 8846.56 8929.36 8159.10 12280.13 9915.31 -6803.12 7213.25 3.13 5952393.87 607039.82 N 70 16 44.705 W 149 8 2.242 16603.93 95.09 103.23 8843.86 8926.66 8172.10 12310.93 9941.89 -6810.01 7243.26 2.01 5952387.38 607069.92 N 7016 44.637 W 149 8 1.368 16635.74 95.65 103.11 8840.88 8923.68 8185.60 12342.60 9969.31 -6817.23 7274.10 1.80 5952380.58 607100.85 N 70 16 44.566 W 149 8 0.470 Last MWD+IFR+MS 16664.52 97.21 102.95 8837.66 8920.46 8197.72 12371.19 9994.06 -6823.68 7301.96 5.45 5952374.50 607128.79 N 70 16 44.502 W 149 7 59.659 TD (Projected) 16721.00 97.21 102.95 8830.57 8913.37 8221.40 12427.23 10042.57 -6836.23 7356.57 0.00 5952362.67 607183.55 N 70 16 44.378 W 149 7 58.069 Survey Type: Definitive Survey NOTES: GYD GC SS - (Gyrodata -gyro single shots -- Gyrodata gyro orientation surveys. Not to be run above 70 degrees inclination. ) MWD +IFR + MS - (In-field referenced MWD with mutt-station analysis and correction applied in post-processing. Assumes a BHA sag correction is appl ied to enhance inclination accuracy. ) MWD + Sag - (MWD with a BHA deformation correction applied. Covers all BHA corrections-from simple 2D tofinite-element 3D models.) Legal Description: Northing (Y) [ftUS] Easting (X) [ftUS] Surface : 4296 FSL 2940 FEL S19 Ti 1 N R12E UM 5959100.06 599737.58 BHL : 2736 FSL 890 FEL S29 T11 N 812E UM 5952362.67 607183.55 • SurveyEditor Ver SP 1.0 Bld( doc40x_56) Z-46~Z-46~Z-46A~Z-46A Generated 2/22/2006 3:34 PM Page 8 of 8 ~ Z-46A Proposed • TREE = CNV 4-1/16 5M WELLHEAD = FMC Gen 5 CSG HEAD = 11" 5M W/ 7" MANDREL HANGER ~ PACKOFF TBG SPOOL = 11" X 11" 5M TBG HANGER = 11" X 4-1l2" ADP FLANGE= 11" X 4-1/16" ELLHEAD = FMC KB. ELEV = 82.5' BF. ELEV _ _6q~ KOP = 4750 Max Angle = 95 @ 14,800' Datum MD - DatumTVD= I 2675' I 4,475' 10-3/4" CSG, 45.5#, L-80 BTGM, ID = 9.950" ". TOP 7-5/8" CSG STUB 4575' `{ t ~ ~_~ i ' GAS LIFT MANDRELS ST MD D DEV TYPE VLV LATCH PORT DATE 7 3671 2500 60 MMG DMY BK-5 6 5366 3500 36 MMG DCK BK-5 5 6464 4400 36 MMG DCR BK-5 4 7594 5300 36 MMG DMY BK-5 3 8682 6200 36 MMG DMY BK-5 2 9805 7100 37 MMG DMY BK-5 1 11022 8000 44 MMG DMY BK-5 HES 7-5/8" EZSV 4650' 11 4 ' 3-1/2" TBG, 9.2#, 13CR-80, Vam Top, 8 3 0.0087 bpf, ID = 2.992" 11710' 3-1/2" HES X NIPPLE ID = 2 813" , . 11730' HES 3-1/2" SYMPHONY BHG w/ WIRE 11784' 7-5/8" x 4-1/2" BAKER S-3 PKR, ID = 3.88" 11810' 3-1/2" HES X NIPPLE, ID = 2.813 HES 7-5/8" ¢SV 15098' 7-5/8" CSG, 29.7#, L-80 BTGM, 15293' 0.04591 bpf, ID = 6.75" r- PBTD 15828' PBTD I-i 16632' 4-1/2" LNR, 12.6#, 13CR-80, Vam Top, I~ 16719' 0.01554 bpf, ID = 4.00" 11830' 3-1/2" HES X NIPPLE, ID = 2.813 11841' 3-1/2" X 4-1/2" XO 11845' 4-1/2" WLEG, ID=3.958" 11838' BAKER HMC LINER HANGER, ZXP pkr w / TBS 12010' 7-5/8" CSG, 29.7#, L-80 BTGM, 0.04591 bpf, ID = 6.75" Minimum ID = 2.813" @ 2677' 3-1/2" HES X NIPPLE PERFORATION SUMMARY REF LOG: ANGLE AT TOP PERF: Note: SIZE SPF INTERVAL Opn/Sqz DATE 2.5 4 15600-16380 Open 01/07/06 2.5 4 16500-16630 Open 01/07/06 DATE REV BY COMMENTS DATE REV BY COMMENTS 12/15/05 STG Original Completion 01/09/06 LV Actual PRUDHOE BAY UNf>- WELL: Z-46A PERMfI' No: API No: 50-029-23280-01 SEC 19, T11 N, R12E, 983' FNL, 2940' FEL BP Exploration (Alaska) r SCHLUMBERGER Survey report Client .................... Field ..................... Well ...................... API number ................ Engineer .................. Rig :...................... STATE :.................... ----- Survey calculation m Method for positions.....: Method for DLS............ BP Exploration (Alaska) Inc. Prudhoe Bay - wOA Z-46A 50-029-23280-01 I. Hernandez Nabors 7ES Alaska ethods------------- Minimum curvature Mason & Taylor ----- Depth reference ----------------------- Permanent datum..........: Mean Sea Level Depth reference..........: Driller's Pipe Tally GL above permanent.......: 54.40 ft KB above permanent.......: N/A Top Drive DF above permanent.......: 82.80 ft ----- Vertical section origin---------------- Latitude (+N/S-).........: 0.00 ft Departure (+E/W-)........: 0.00 ft ----- Platform reference point--------------- Latitude (+N/S-).........: -999.25 ft Departure (+E/W-)........: -999.25 ft Azimuth from Vsect Origin to target: 145.00 degrees L(c)2006 IDEAL ID10 2C O1] 4-Jan-2006 10:20:20 Page 1 of 11 Spud date ................. 15-December-05 Last survey date.........: 03-Jan-06 Total accepted surveys...: 277 MD of first survey.......: 0.00 ft MD of last survey........: 16721.00 ft ----- Geomagnetic data ---------------------- Magnetic model...........: BGGM version 2005 Magnetic date ............: 15-Dec-2005 Magnetic field strength..: 1151.62 HCNT Magnetic dec (+E/W-).....: 24.43 degrees Magnetic dip .............: 80.83 degrees ----- MWD survey Reference Reference G ............... Reference H ............... Reference Dip ............. Tolerance of G...........: Tolerance of H...........: Tolerance of Dip.........: Criteria --------- 1002.68 meal 1151.62 HCNT 80.83 degrees (+/-) 2.50 meal (+/-) 6.00 HCNT (+/-) 0.45 degrees ----- Corrections --------------------------- Magnetic dec (+E/W-).....: 24.43 degrees Grid convergence (+E/W-).: 0.00 degrees Total az corr (+E/W-)....: 24.43 degrees (Total az corr = magnetic dec - grid conv) Survey Correction Type .... I=Sag Corrected Inclination M=Schlumberger Magnetic Correction S=Shell Magnetic Correction F=Failed Axis Correction R=Magnetic Resonance Tool Correction D=Dmag Magnetic Correction • SCHLUMBERGER Survey Report --- -------- ------ ------- ------ ------- 4-Jan-2006 - -------- 10:20:20 -------- -------- Page ------- 2 of 11 -------- ----- - ---- ------ --- Seq -------- Measured ------ Incl ------- Azimuth ------ Course ------- TVD - -------- Vertical -------- Displ -------- Displ ------- Total -------- At ----- DLS - ---- ------ Srvy Tool # depth angle angle length depth section +N/$- +E/W- displ Azim (deg/ tool Corr - --- (ft) -------- (deg) ------ (deg) ------- (ft) ------ (f t) ------- (ft) - -------- (ft) -------- (ft) -------- (ft) ------- (deg) -------- 100f) ----- - type (deg) ---- ------ --- 1 -------- 0.00 ------ 0.00 ------- 0.00 ------ 0.00 ------- 0.00 - -------- 0.00 -------- 0.00 -------- 0.00 ------- 0.00 -------- 0.00 ----- 0.00 - ---- ------ TIP 2 97.00 0.25 45.68 97.00 97.00 -0.03 0.15 0.15 0.21 45.68 0.26 BP _GYD CT DMS 3 166.00 0.47 167.22 69.00 166.00 0.20 -0.02 0.32 0.32 94.08 0.92 BP _GYD CT DMS 4 250.00 1.69 185.42 84.00 249.98 1.47 -1.59 0.28 1.62 169.99 1.49 BP _GYD CT DMS 5 347.00 3.66 165.16 97.00 346.87 5.46 -6.01 0.94 6.08 171.12 2.22 BP GYD CT DMS 6 463.09 8.26 166.73 116.09 462.31 16.69 -17.71 3.80 18.12 167.88 3.96 BP _MWD+IFR+MS 7 553.53 11.39 166.59 90.44 551.41 31.03 -32.73 7.37 33.55 167.31 3.46 BP _MWD+IFR+MS 8 640.98 15.76 170.03 87.45 636.40 49.83 -52.83 11.43 54.06 167.80 5.08 BP _MWD+IFR+MS 9 735.03 19.39 168.93 94.05 726.04 75.69 -80.74 16.64 82.44 168.36 3.88 BP _MWD+IFR+MS 10 830.75 21.97 168.37 95.72 815.59 106.65 -113.88 23.30 116.24 168.44 2.70 BP MWD+IFR+MS 11 925.21 25.15 169.39 94.46 902.16 141.16 -150.93 30.56 153.99 168.55 3.39 BP _MWD+IFR+MS 12 1021.46 27.01 170.55 96.25 988.61 179.51 -192.59 37.91 196.29 168.86 2.00 BP _MWD+IFR+MS 13 1115.45 29.71 170.10 93.99 1071.31 219.86 -236.60 45.42 240.92 169.13 2.88 BP _MWD+IFR+MS 14 1211.97 33.32 169.60 96.52 1153.58 265.64 -286.25 54.33 291.36 169.25 3.75 BP _MWD+IFR+MS 15 1308.40 37.10 169.20 96.43 1232.35 316.27 -340.89 64.56 346.95 169.28 3.93 BP MWD+IFR+MS 16 1402.14 41.83 168.21 93.74 1304.70 370.82 -399.29 76.25 406.51 169.19 5.09 BP _MWD+IFR+MS 17 1496.89 45.13 167.90 94.75 1373.44 430.80 -463.07 89.75 471.69 169.03 3.49 BP _MWD+IFR+MS 18 1591.96 48.61 167.27 95.07 1438.43 494.86 -530.82 104.67 541.04 168.84 3.69 BP _MWD+IFR+MS 19 1685.09 50.59 166.56 93.13 1498.79 560.65 -599.89 120.74 611.92 168.62 2.20 BP _MWD+IFR+MS 20 1781.67 54.25 166.77 96.58 1557.68 631.77 -674.36 138.38 688.41 168.40 3.79 BP _MWD+IFR+MS 21 1876.60 58.36 166.72 94.93 1610.33 705.12 -751.22 156.49 767.34 168.23 4.33 BP _MWD+IFR+MS 22 1972.23 59.92 166.76 95.63 1659.38 781.37 -831.12 175.32 849.41 168.09 1.63 BP _MWD+IFR+MS 23 2063.29 59.63 166.85 91.06 1705.22 854.42 -907.72 193.28 928.07 167.98 0.33 BP _MWD+IFR+MS 24 2159.99 57.53 166.10 96.70 1755.63 931.21 -987.95 212.57 1010.56 167.86 2.27 BP _MWD+IFR+MS 25 2252.95 58.43 164.59 92.96 1804.92 1005.10 -1064.20 232.51 1089.30 167.68 1.68 BP MWD+IFR+MS 26 2348.04 60.35 163.80 95.09 1853.34 1082.39 -1142.94 254.81 1171.00 167.43 2.14 BP _MWD+IFR+MS 27 2442.85 58.27 161.44 94.81 1901.73 1160.08 -1220.74 279.14 1252.25 167.12 3.06 BP _MWD+IFR+MS 28 2539.06 59.16 164.45 96.21 1951.70 1238.28 -1299.33 303.24 1334.25 166.86 2.83 BP _MWD+IFR+MS 29 2634.17 60.68 164.15 95.11 1999.37 1315.96 -1378.56 325.51 1416.47 166.71 1.62 BP _MWD+IFR+MS 30 2729.92 62.75 164.51 95.75 2044.74 1395.51 -1459.74 348.28 1500.71 166.58 2.19 BP _MWD+IFR+MS [(c)2 006 IDEAL ID10 2C O1] SCHLUMBERGER Survey Report --- -------- ------ ------- ------ ------- 4-Jan-2006 - -------- 10:20:20 -------- -------- Page ------- 3 of 11 -------- ----- - ---- ------ --- Seq -------- Measured ------ Incl ------- Azimuth ------ Course ------- TVD - -------- -------- Vertical Displ -------- Displ ------- Total -------- At ----- DLS - ---- ------ Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - --- (ft) -------- (deg) ------ (deg) ------- (ft) ------ (ft) ------- (f t) - -------- (ft) -------- (ft) -------- (ft) ------- (deg) -------- 100f) ----- - type (deg) ---- ------ --- 31 -------- 2823.02 ------ 62.49 ------- 164.36 ------ 93.10 ------- 2087.55 - -------- 1473.47 -------- -1539.38 -------- 370.47 ------- 1583.33 -------- 166.47 ----- 0.31 - BP ---- ------ _MWD+IFR+MS 32 2917.78 62.59 164.63 94.76 2131.25 1552.74 -1620.40 392.94 1667.36 166.37 0.27 BP _MWD+IFR+MS 33 3011.99 62.68 164.85 94.21 2174.55 1631.49 -1701.12 414.96 1751.00 166.29 0.23 BP _MWD+IFR+MS 34 3106.26 62.13 166.44 94.27 2218.22 1709.67 -1782.05 435.68 1834.54 166.26 1.60 BP _MWD+IFR+MS 35 3201.98 60.76 167.93 95.72 2263.98 1787.52 -1864.03 454.33 1918.60 166.30 1.98 BP MWD+IFR+MS 36 3296.21 60.52 168.62 94.23 2310.18 1862.96 -1944.44 471.02 2000.68 166.38 0.69 BP _MWD+IFR+MS • 37 3389.95 60.34 168.43 93.74 2356.44 1937.71 -2024.34 487.24 2082.15 166.47 0.26 BP _MWD+IFR+MS 38 3485.81 60.15 168.81 95.86 2404.01 2013.96 -2105.92 503.66 2165.32 166.55 0.40 BP _MWD+IFR+MS 39 3581.23 59.74 169.09 95.42 2451.80 2089.44 -2186.98 519.49 2247.84 166.64 0.50 BP _MWD+IFR+MS 40 3675.85 61.63 168.38 94.62 2498.13 2164.96 -2267.89 535.61 2330.28 166.71 2.10 BP MWD+IFR+MS 41 3771.30 61.71 168.24 95.45 2543.42 2242.12 -2350.17 552.64 2414.27 166.77 0.15 BP _MWD+IFR+MS 42 3866.46 61.49 168.10 95.16 2588.68 2319.08 -2432.10 569.80 2497.95 166.81 0.26 BP _MWD+IFR+MS 43 3962.40 59.57 167.64 95.94 2635.88 2396.03 -2513.75 587.35 2581.46 166.85 2.04 BP _MWD+IFR+MS 44 4057.67 61.28 167.95 95.27 2682.90 2472.42 -2594.74 604.86 2664.30 166.88 1.82 BP _MWD+IFR+MS 45 4151.71 60.74 167.35 94.04 2728.48 2548.33 -2675.09 622.45 2746.55 166.90 0.80 BP MWD+IFR+MS 46 4246.22 61.16 167.09 94.51 2774.37 2624.81 -2755.66 640.73 2829.17 166.91 0.51 BP _MWD+IFR+MS 47 4340.89 60.93 167.09 94.67 2820.20 2701.57 -2836.40 659.24 2912.01 166.92 0.24 BP _MWD+IFR+MS 48 4421.11 60.83 166.38 80.22 2859.24 2766.67 -2904.61 675.32 2982.09 166.91 0.78 BP _MWD+IFR+MS 49 4524.11 56.16 165.50 103.00 2913.05 2848.65 -2989.78 696.63 3069.87 166.88 4.59 BP _INC+TREND 50 4623.97 51.13 165.00 99.86 2972.23 2924.08 -3067.53 717.09 3150.23 166.84 5.05 BP _INC+TREND 51 4719.61 49.56 163.83 95.64 3033.26 2993.52 -3138.45 736.86 3223.80 166.79 1.89 BP _MWD+IFR+MS • 52 4812.93 49.23 163.91 93.32 3094.00 3060.56 -3206.51 756.54 3294.56 166.72 0.36 BP _MWD+IFR+MS 53 4906.41 46.13 162.78 93.48 3156.93 3126.15 -3272.73 776.33 3363.55 166.66 3.43 BP _MWD+IFR+MS 54 5001.25 42.33 159.15 94.84 3224.89 3189.70 -3335.26 797.83 3429.35 166.55 4.81 BP _MWD+IFR+MS 55 5096.19 39.54 163.40 94.94 3296.61 3249.39 -3394.11 817.85 3491.26 166.45 4.15 BP MWD+IFR+MS 56 5190.04 36.23 164.19 93.85 3370.68 3303.95 -3449.44 833.95 3548.82 166.41 3.56 BP _MWD+IFR+MS 57 5283.72 35.66 164.89 93.68 3446.52 3355.77 -3502.44 848.61 3603.78 166.38 0.75 BP _MWD+IFR+MS 58 5377.25 35.48 165.39 93.53 3522.60 3406.85 -3555.03 862.56 3658.17 166.36 0.37 BP _MWD+IFR+MS 59 5473.22 36.68 163.26 95.97 3600.16 3460.18 -3609.43 877.84 3714.65 166.33 1.81 BP _MWD+IFR+MS 60 5567.55 36.17 162.74 94.33 3676.06 3513.45 -3662.99 894.22 3770.56 166.28 0.63 BP _MWD+IFR+MS [(c)2 006 IDEAL ID10 2C 01] SCHLUMBERGER Survey Report 4-Jan-2006 10:20:20 Page 4 of 11 Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - (ft) (deg) (deg) (ft) (ft) (ft) (ft) (ft) (ft) (deg) 100f) type (deg) 61 5662.94 36.50 162.79 95.39 3752.90 3567.27 -3716.98 910.96 3826.98 166.23 0.35 BP _MWD+IFR+MS 62 5758.74 36.22 163.62 95.80 3830.05 3621.23 -3771.35 927.37 3883.69 166.19 0.59 BP _MWD+IFR+MS 63 5854.13 35.90 163.66 95.39 3907.17 3674.43 -3825.22 943.19 3939.79 166.15 0.34 BP _MWD+IFR+MS 64 5948.76 35.35 164.04 94.63 3984.09 3726.59 -3878.17 958.52 3994.86 166.12 0.63 BP _MWD+IFR+MS 65 6041.90 36.99 163.67 93.14 4059.27 3778.61 -3930.97 973.81 4049.79 166.09 1.78 BP MWD+IFR+MS 66 6137.51 37.24 163.52 95.61 4135.51 3833.29 -3986.31 990.10 4107.43 166.05 0.28 BP _MWD+IFR+MS 67 6231.24 37.46 163.05 93.73 4210.02 3887.29 -4040.77 1006.46 4164.23 166.01 0.38 BP _MWD+IFR+MS 68 6326.26 37.93 163.61 95.02 4285.21 3942.44 -4096.43 1023.12 4222.26 165.98 0.61 BP _MWD+IFR+MS 69 6420.80 37.18 163.02 94.54 4360.16 3997.14 -4151.63 1039.67 4279.83 165.94 0.88 BP _MWD+IFR+MS 70 6515.35 37.26 162.80 94.55 4435.45 4051.56 -4206.29 1056.47 4336.94 165.90 0.16 BP MWD+IFR+MS 71 6609.74 37.44 163.97 94.39 4510.49 4105.90 -4261.17 1072.85 4394.15 165.87 0.78 BP _MWD+IFR+MS 72 6704.73 37.34 163.46 94.99 4585.96 4160.53 -4316.53 1089.02 4451.79 165.84 0.34 BP _MWD+IFR+MS 73 6800.14 37.53 163.78 95.41 4661.72 4215.49 -4372.17 1105.38 4509.74 165.81 0.28 BP _MWD+IFR+MS 74 6894.49 36.68 162.26 94.35 4736.97 4269.61 -4426.61 1121.99 4566.59 165.78 1.33 BP _MWD+IFR+MS 75 6985.90 36.76 161.29 91.41 4810.24 4321.94 -4478.52 1139.08 4621.11 165.73 0.64 BP MWD+IFR+MS 76 7079.07 36.84 161.96 93.17 4884.84 4375.42 -4531.49 1156.68 4676.78 165.68 0.44 BP _MWD+IFR+MS 77 7175.09 36.82 161.27 96.02 4961.70 4430.57 -4586.11 1174.83 4734.19 165.63 0.43 BP _MWD+IFR+MS 78 7268.96 36.80 161.55 93.87 5036.85 4484.52 -4639.41 1192.76 4790.29 165.58 0.18 BP _MWD+IFR+MS 79 7361.55 36.56 162.06 92.59 5111.11 4537.47 -4691.96 1210.03 4845.48 165.54 0.42 BP _MWD+IFR+MS 80 7455.52 36.31 161.94 93.97 5186.71 4590.84 -4745.03 1227.28 4901.18 165.50 0.28 BP _MWD+IFR+MS 81 7549.93 36.04 161.07 94.41 5262.92 4644.27 -4797.88 1244.95 4956.77 165.45 0.61 BP _MWD+IFR+MS • 82 7644.98 35.83 161.00 95.05 5339.88 4697.88 -4850.64 1263.08 5012.39 165.40 0.23 BP _MWD+IFR+MS 83 7739.20 35.60 161.05 94.22 5416.38 4750.74 -4902.65 1280.96 5067.23 165.36 0.25 BP _MWD+IFR+MS 84 7833.11 35.40 161.23 93.91 5492.83 4803.13 -4954.25 1298.59 5121.62 165.31 0.24 BP _MWD+IFR+MS 85 7927.46 34.99 161.23 94.35 5569.94 4855.34 -5005.74 1316.09 5175.86 165.27 0.43 BP MWD+IFR+MS 86 8023.56 34.59 161.42 96.10 5648.86 4907.96 -5057.69 1333.65 5230.56 165.23 0.43 BP _MWD+IFR+MS 87 8118.55 36.62 160.39 94.99 5726.09 4961.15 -5109.94 1351.75 5285.71 165.18 2.23 BP _MWD+IFR+MS 88 8212.61 35.62 159.80 94.06 5802.07 5014.68 -5162.07 1370.62 5340.94 165.13 1.13 BP _MWD+IFR+MS 89 8306.54 35.78 160.21 93.93 5878.35 5067.62 -5213.58 1389.36 5395.53 165.08 0.31 BP _MWD+IFR+MS 90 8401.41 35.13 160.21 94.87 5955.62 5120.72 -5265.36 1408.00 5450.36 165.03 0.69 BP _MWD+IFR+MS [(c)2 006 IDEAL ID10 2C O1] SCHLUMBERGER Survey Report 4-Jan-2006 -- 10:20:20 ------- --------- Page ------- 5 of 11 -------- ----- - ---- ------ --- --- Seq -------- -------- Measured ------ ------ Incl ------- ------- Azimuth ------ ------ Course ------- ------- TVD - ------ - -------- ------- Vertical Displ --------- Displ ------- Total -------- At ----- DLS - ---- ------ Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - --- (ft) -------- (deg) ------ (deg) ------- (ft) ------ (ft) ------- (f t) - -------- (ft) ------- (ft) --------- (ft) ------- (deg) -------- 100f) ----- - type (deg) ---- ------ --- 91 -------- 8495.80 ------ 36.57 ------- 162.92 ------ 94.39 ------- 6032.13 - -------- 5173.69 ------- -5317.80 --------- 1425.45 ------- 5505.53 -------- 164.99 ----- 2.27 - BP ---- ------ _MWD+IFR+MS 92 8590.27 35.09 160.50 94.47 6108.73 5226.64 -5370.30 1442.78 5560.73 164.96 2.17 BP _MWD+IFR+MS 93 8685.02 33.80 159.97 94.75 6186.86 5278.35 -5420.74 1460.90 5614.14 164.92 1.40 BP _MWD+IFR+MS 94 8778.74 33.89 160.75 93.72 6264.70 5328.68 -5469.90 1478.45 5666.18 164.88 0.47 BP _MWD+IFR+MS 95 8874.47 35.16 162.26 95.73 6343.57 5380.69 -5521.35 1495.64 5720.34 164.84 1.60 BP MWD+IFR+MS 96 8968.62 36.31 163.44 94.15 6420.00 5433.02 -5573.89 1511.85 5775.29 164.82 1.42 BP _MWD+IFR+MS • 97 9063.36 35.26 163.04 94.74 6496.85 5485.64 -5626.94 1527.82 5830.66 164.81 1.14 BP _MWD+IFR+MS 98 9159.00 35.04 163.41 95.64 6575.05 5537.94 -5679.65 1543.71 5885.71 164.79 0.32 BP _MWD+IFR+MS 99 9251.96 37.11 163.09 92.96 6650.18 5589.92 -5732.07 1559.49 5940.42 164.78 2.24 BP _MWD+IFR+MS 100 9345.70 37.32 161.94 93.74 6724.83 5643.99 -5786.14 1576.53 5997.07 164.76 0.78 BP MWD+IFR+MS 101 9440.46 37.29 161.76 94.76 6800.21 5698.95 -5840.71 1594.42 6054.43 164.73 0.12 BP _MWD+IFR+MS 102 9536.80 37.48 161.82 96.34 6876.76 5754.95 -5896.28 1612.70 6112.84 164.70 0.20 BP _MWD+IFR+MS 103 9629.83 38.63 160.20 93.03 6950.01 5810.07 -5950.49 1631.37 6170.07 164.67 1.64 BP MWD+IFR+MS 104 9725.05 38.76 154.94 95.22 7024.35 5868.13 -6005.47 1654.07 6229.10 164.60 3.46 BP _ _MWD+IFR+MS 105 9818.72 38.47 150.70 93.67 7097.55 5926.01 -6057.45 1680.75 6286.31 164.49 2.84 BP MWD+IFR+MS 106 9914.44 38.39 146.21 95.72 7172.55 5985.37 -6108.13 1711.86 6343.48 164.34 2.92 BP _MWD+IFR+MS 107 10007.32 38.62 143.70 92.88 7245.24 6043.18 -6155.46 1745.06 6398.04 164.17 1.70 BP _MWD+IFR+MS 108 10100.07 38.93 138.83 92.75 7317.56 6101.10 -6200.74 1781.38 6451.55 163.97 3.30 BP _MWD+IFR+MS 109 10196.60 38.63 134.97 96.53 7392.83 6160.94 -6244.87 1822.67 6505.42 163.73 2.52 BP _MWD+IFR+MS 110 10289.20 39.81 129.28 92.60 7464.59 6217.96 -6284.08 1866.08 6555.29 163.46 4.09 BP _MWD+IFR+MS 111 10384.17 41.14 125.27 94.97 7536.84 6276.64 -6321.37 1915.13 6605.11 163.15 3.08 BP _MWD+IFR+MS • 112 10479.72 41.95 122.51 95.55 7608.36 6335.74 -6356.69 1967.73 6654.28 162.80 2.09 BP _MWD+IFR+MS 113 10574.48 42.04 122.61 94.76 7678.79 6394.34 -6390.81 2021.17 6702.80 162.45 0.12 BP _MWD+IFR+MS 114 10669.29 42.23 123.59 94.81 7749.09 6453.35 -6425.55 2074.45 6752.11 162.11 0.72 BP _MWD+IFR+MS 115 10764.05 43.43 124.16 94.76 7818.59 6513.44 -6461.45 2127.93 6802.83 161.77 1.33 BP MWD+IFR+MS 116 10859.40 44.41 123.44 95.35 7887.27 6575.11 -6498.24 2182.89 6855.09 161.43 1.15 BP _MWD+IFR+MS 117 10954.54 44.22 122.31 95.14 7955.34 6636.67 -6534.32 2238.71 6907.18 161.09 0.85 BP _MWD+IFR+MS 118 11048.58 43.22 121.12 94.04 8023.31 6696.38 -6568.49 2294.00 6957.55 160.75 1.38 BP _MWD+IFR+MS 119 11143.73 42.40 120.32 95.15 8093.11 6755.32 -6601.53 2349.58 7007.19 160.41 1.03 BP _MWD+IFR+MS 120 11237.09 42.15 119.77 93.36 8162.19 6812.25 -6632.97 2403.94 7055.16 160.08 0.48 BP _MWD+IFR+MS [(c)2 006 IDEAL ID10 2C O1] SCHLUMBERGER Survey Report 4- Jan-2006 10:20:20 Page 6 of 11 Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - (ft) (deg) (deg) (ft) (ft) (ft) (f t) (ft) (ft) (deg) 100f) type (deg) 121 11334.18 43.43 119.80 97.09 8233.44 6871.92 -6665.73 2461.18 7105.59 159.73 1.32 BP _MWD+IFR+MS 122 11428.75 43.30 120.68 94.57 8302.19 6930.89 -6698.43 2517.28 7155.82 159.40 0.65 BP _MWD+IFR+MS 123 11521.70 43.98 121.52 92.95 8369.46 6989.54 -6731.57 2572.21 7206.27 159.09 0.96 BP _MWD+IFR+MS 124 11617.04 44.77 121.51 95.34 8437.61 7050.69 -6766.42 2629.05 7259.23 158.77 0.83 BP _MWD+IFR+MS 125 11713.67 45.06 120.61 .96.63 8506.04 7113.04 -6801.62 2687.49 7313.32 158.44 0.72 BP MWD+IFR+MS 126 11808.98 44.89 119.50 95.31 8573.46 7174.12 -6835.36 2745.80 7366.24 158.11 0.84 BP _MWD+IFR+MS . 127 11903.84 44.54 118.50 94.86 8640.87 7234.11 -6867.72 2804.17 7418.15 157.79 0.83 BP _MWD+IFR+MS 128 11945.86 44.82 117.55 42.02 8670.75 7260.44 -6881.60 2830.25 7440.88 157.64 1.72 BP _MWD+IFR+MS 129 12014.00 45.44 117.82 68.14 8718.82 7303.35 -6904.04 2873.01 7477.96 157.41 0.95 BP _INC+TREND 130 12045.39- 48.50 117.94 31.39 8740.24 7323.77 -6914.76 2893.29 7495.67 157.29 9.75 BP MWD+SAG 131 12077.79 56.50 118.19 32.40 8759.95 7346.67 -6926.85 2915.95 7515.59 157.17 24.70 BP _MWD+SAG 132 12109.51 63.61 117.74 31.72 8775.77 7371.13 -6939.73 2940.22 7536.89 157.04 22.45 BP _MWD+SAG 133 12142.08 70.29 117.44 32.57 8788.51 7397.72 -6953.60 2966.76 7560.04 156.89 20.53 BP _MWD+SAG 134 12158.17 69.65 116.51 16.09 8794.03 7411.06 -6960.46 2980.23 7571.64 156.82 6.73 BP _MWD+SAG 135 12173.09 66.80 117.45 14.92 8799.56 7423.29 -6966.74 2992.58 7582.28 156.75 19.98 BP MWD+IFR+MS 136 12206.21 67.17 118.06 33.12 8812.51 7450.39 -6980.94 3019.56 7606.00 156.61 2.03 BP _MWD+IFR+MS 137 12237.60 71.48 117.12 31.39 8823.59 7476.46 -6994.53 3045.58 7628.83 156.47 14.01 BP _MWD+IFR+MS 138 12268.01 74.77 116.89 30.41 8832.42 7502.15 -7007.74 3071.51 7651.31 156.33 10.84 BP _MWD+IFR+MS 139 12301.30 78.69 115.43 33.29 8840.06 7530.52 -7022.02 3100.58 7676.09 156.18 12.52 BP _MWD+IFR+MS 140 12333.81 81.42 109.45 32.51 8845.67 7557.49 -7034.23 3130.16 7699.24 156.01 19.97 BP _MWD+IFR+MS 141 12365.86 80.80 114.61 32.05 8850.63 7584.05 -7046.10 3159.51 7722.05 155.85 16.02 BP _MWD+IFR+MS 142 12396.37 80.98 113.80 30.51 8855.46 7609.93 -7058.45 3186.98 7744.59 155.70 2.69 BP _MWD+IFR+MS 143 12428.97 80.75 113.85 32.60 8860.64 7637.46 -7071.46 3216.43 7768.58 155.54 0.72 BP _MWD+IFR+MS 144 12460.26 84.35 107.31 31.29 8864.70 7663.03 -7082.35 3245.46 7790.55 155.38 23.70 BP _MWD+IFR+MS 145 12492.35 85.53 106.04 32.09 8867.53 7688.11 -7091.52 3276.08 7811.68 155.20 5.39 BP MWD+IFR+MS 146 12524.23 86.21 103.89 31.88 8869.82 7712.46 -7099.73 3306.79 7832.05 155.03 7.06 BP _MWD+IFR+MS 147 12556.27 85.63 98.06 32.04 8872.11 7735.42 -7105.81 3338.15 7850.85 154.84 18.24 BP _MWD+IFR+MS 148 12588.30 84.01 93.29 32.03 8875.00 7756.21 -7108.97 3369.89 7867.24 154.64 15.67 BP _MWD+IFR+MS 149 12620.30 80.80 88.85 32.00 8879.23 7774.88 -7109.56 3401.59 7881.41 154.43 17.02 BP _MWD+IFR+MS 150 12651.05 78.02 86.16 30.75 8884.88 7791.12 -7108.25 3431.78 7893.31 154.23 12.48 BP _MWD+IFR+MS [(c)2 006 IDEAL ID10 2C Ol] SCHLUMBERGER Survey Report 4 -Jan-2006 10:20:20 Page 7 of 11 Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - (ft) (deg) (deg) (ft) (ft) (ft) (ft) (ft) (ft) (deg) 100f) type (deg) 151 12684.07 73.55 85.49 33.02 8892.99 7807.52 -7105.92 3463.69 7905.14 154.01 13.68 BP _MWD+IFR+MS 152 12715.41 70.87 86.51 31.34 8902.56 7822.89 -7103.84 3493.46 7916.36 153.81 9.10 BP _MWD+IFR+MS 153 12747.65 71.44 83.85 32.24 8912.98 7838.23 -7101.27 3523.86 7927.53 153.61 8.01 BP _MWD+IFR+MS 154 12779.92 73.09 86.59 32.27 8922.81 7853.70 -7098.72 3554.48 7938.90 153.40 9.57 BP _MWD+IFR+M5 155 12811.14 73.91 85.45 31.22 8931.68 7869.12 -7096.64 3584.35 7950.46 153.20 4.38 BP _MWD+IFR+MS 156 12843.27 78.24 87.17 32.13 8939.41 7885.33 -7094.64 3615.46 7962.75 153.00 14.44 BP _MWD+IFR+MS • 157 12875.49 79.27 84.18 32.22 8945.69 7901.45 -7092.25 3646.97 7974.98 152.79 9.65 BP _MWD+IFR+MS 158 12905.97 79.48 79.05 30.48 8951.31 7914.86 -7087.88 3676.59 7984.70 152.58 16.56 BP _MWD+IFR+MS 159 12938.41 78.35 74.82 32.44 8957.55 7926.75 -7080.69 3707.60 7992.65 152.36 13.26 BP _MWD+IFR+MS 160 12970.10 78.30 72.03 31.69 8963.97 7936.56 -7071.84 3737.34 7998.66 152.14 8.62 BP _MWD+IFR+MS 161 13002.98 78.57 69.99 32.88 8970.56 7945.44 -7061.36 3767.80 8003.69 151.92 6.13 BP _MWD+IFR+MS 162 13035.47 77.64 64.73 32.49 8977.26 7952.25 -7049.13 3797.13 8006.77 151.69 16.10 BP _MWD+IFR+MS 163 13065.82 78.51 62.98 30.35 8983.53 7956.82 -7036.04 3823.78 8007.95 151.48 6.33 BP _MWD+IFR+MS 164 13098.43 79.22 63.33 32.61 8989.83 7961.36 -7021.59 3852.33 8008.95 151.25 2.42 BP MWD+IFR+MS ~ 165 13129.60 82.05 63.37 31.17 8994.90 7965.82 -7007.80 3879.81 8010.13 151.03 9.08 BP MWD+IFR+MS 166 13161.41 84.11 61.46 31.81 8998.74 7969.90 -6993.18 3907.80 8010.96 150.80 8.80 BP _MWD+IFR+MS 167 13194.17 86.67 61.32 32.76 9001.37 7973.53 -6977.54 3936.46 8011.36 150.57 7.83 BP _MWD+IFR+MS 168 13225.42 91.26 63.58 31.25 9001.93 7977.58 -6963.10 3964.16 8012.44 150.35 16.37 BP _MWD+IFR+MS 169 13258.65 92.72 64.32 33.23 9000.78 7982.75 -6948.51 3993.99 8014.60 150.11 4.93 BP _MWD+IFR+MS 170 13290.05 93.91 67.13 31.40 8998.96 7988.58 -6935.63 4022.56 8017.73 149.89 9.70 BP _MWD+IFR+MS 171 13320.89 93.64 64.73 30.84 8996.93 7994.41 -6923.08 4050.66 8021.02 149.67 7.81 BP _MWD+IFR+MS 172 13353.60 92.43 66.13 32.71 8995.20 8000.33 -6909.50 4080.36 8024.37 149.44 5.65 BP _MWD+IFR+MS 173 13385.39 93.04 67.53 31.79 8993.68 8006.84 -6897.00 4109.56 8028.52 149.21 4.80 BP _MWD+IFR+MS 174 13416.26 92.13 69.35 30.87 8992.29 8014.01 -6885.67 4138.24 8033.52 148.99 6.59 BP_MWD+IFR+MS 175 13449.11 92.84 69.83 32.85 8990.87 8022.27 -6874.23 4168.99 8039.62 148.76 2.61 BP MWD+IFR+MS 176 13481.17 91.72 68.58 32.06 8989.59 8030.13 -6862.85 4198.94 8045.49 148.54 5.23 BP _MWD+IFR+MS 177 13512.48 91.04 67.74 31.31 8988.84 8037.26 -6851.21 4228.00 8050.78 148.32 3.45 BP _MWD+IFR+MS 178 13544.62 91.82 68.85 32.14 8988.04 8044.65 -6839.33 4257.85 8056.40 148.10 4.22 BP _MWD+IFR+MS 179 13576.52 92.95 68.85 31.90 8986.71 8052.28 -6827.83 4287.57 8062.41 147.87 3.54 BP _MWD+IFR+MS 180 13607.53 93.16 69.11 31.01 8985.06 8059.76 -6816.72 4316.48 8068.43 147.66 1.08 BP _MWD+IFR+MS [(C)2 006 IDEAL ID10 2C O1] SCHLUMBERGER Survey Report 4-Jan-2006 10:20:20 Page 8 of 11 Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - (ft) (deg) (deg) (ft) (ft) (ft) (ft) (f t) (ft) (deg) 100f) type (deg) 181 13639.94 90.75 68.89 32.41 8983.95 8067.59 -6805.11 4346.71 8074.87 147.43 7.47 BP _MWD+IFR+MS 182 13672.41 91.28 68.97 32.47 8983.38 8075.41 -6793.44 4377.01 8081.40 147.21 1.65 BP _MWD+IFR+MS 183 13703.62 91.89 66.67 31.21 8982.51 8082.33 -6781.66 4405.90 8087.20 146.99 7.62 BP _MWD+IFR+MS 184 13734.95 92.35 65.62 31.33 8981.35 8088.38 -6769.00 4434.53 8092.24 146.77 3.66 BP _MWD+IFR+MS 185 13766.69 92.93 64.42 31.74 8979.89 8093.90 -6755.61 4463.27 8096.85 146.55 4.20 BP MWD+IFR+MS 186 13798.33 91.11 64.41 31.64 8978.78 8099.07 -6741.96 4491.79 8101.24 146.33 5.75 BP _MWD+IFR+MS . 187 13830.71 91.31 65.25 32.38 8978.09 8104.60 -6728.19 4521.09 8106.09 146.10 2.67 BP _MWD+IFR+MS 188 13862.33 91.88 65.20 31.62 8977.21 8110.21 -6714.94 4549.78 8111.17 145.88 1.81 BP _MWD+IFR+MS 189 13894.01 92.54 66.18 31.68 8975.99 8116.08 -6701.91 4578.63 8116.62 145.66 3.73 BP _MWD+IFR+MS 190 13928.62 93.23 64.49 34.61 8974.25 8122.28 -6687.49 4610.04 8122.50 145.42 5.27 BP MWD+IFR+MS 191 13958.42 92.88 64.70 29.80 8972.66 8127.24 -6674.72 4636.92 8127.30 145.21 1.37 BP _MWD+IFR+MS 192 13990.63 93.11 66.64 32.21 8970.98 8133.20 -6661.47 4666.23 8133.20 144.99 6.06 BP _MWD+IFR+MS 193 14023.02 91.78 67.45 32.39 8969.60 8139.95 -6648.85 4696.03 8140.02 144.77 4.81 BP _MWD+IFR+MS 194 14053.93 90.69 69.23 30.91 8968.93 8147.08 -6637.45 4724.75 8147.33 144.56 6.75 BP _MWD+IFR+MS 195 14085.64 91.13 69.48 31.71 8968.43 8154.94 -6626.27 4754.42 8155.48 144.34 1.60 BP MWD+IFR+MS 196 14118.29 91.51 70.69 32.65 8967.67 8163.44 -6615.15 4785.11 8164.40 144.12 3.88 BP _MWD+IFR+MS 197 14149.73 91.61 71.17 31.44 8966.82 8172.06 -6604.88 4814.81 8173.55 143.91 1.56 BP _MWD+IFR+MS 198 14181.50 90.44 72.34 31.77 8966.25 8181.22 -6594.94 4844.98 8183.34 143.70 5.21 BP _MWD+IFR+MS 199 14213.88 90.51 74.93 32.38 8965.98 8191.57 -6585.81 4876.04 8194.43 143.48 8.00 BP _MWD+IFR+MS 200 14245.57 91.73 78.44 31.69 8965.36 8203.27 -6578.52 4906.87 8206.96 143.28 11.72 BP _MWD+IFR+MS 201 14277.81 92.37 80.12 32.24 8964.21 8216.52 -6572.52 4938.52 8221.14 143.08 5.57 BP _MWD+IFR+MS • 202 14308.97 92.16 82.16 31.16 8962.98 8230.23 -6567.73 4969.29 8235.83 142.89 6.58 BP _MWD+IFR+MS 203 14341.86 92.50 85.09 32.89 8961.64 8245.98 -6564.08 5001.94 8252.67 142.69 8.96 BP _MWD+IFR+MS 204 14373.18 91.99 89.16 31.32 8960.41 8262.62 -6562.51 5033.19 8270.40 142.51 13.09 BP _MWD+IFR+MS 205 14405.21 92.06 90.19 32.03 8959.28 8280.83 -6562.33 5065.20 8289.78 142.34 3.22 BP MWD+IFR+MS 206 14437.53 92.54 89.34 32.32 8957.98 8299.24 -6562.20 5097.50 8309.45 142.16 3.02 BP _MWD+IFR+MS 207 14468.27 92.90 89.32 30.74 8956.52 8316.56 -6561.84 5128.20 8328.03 141.99 1.17 BP _MWD+IFR+MS 208 14501.40 91.80 90.61 33.13 8955.17 8335.53 -6561.82 5161.30 8348.44 141.81 5.11 BP _MWD+IFR+MS 209 14533.41 91.48 92.19 32.01 8954.25 8354.51 -6562.60 5193.29 8368.87 141.64 5.03 BP _MWD+IFR+MS 210 14565.37 89.20 93.65 31.96 8954.06 8374.15 -6564.23 5225.20 8389.98 141.48 8.47 BP _MWD+IFR+MS [(c)2 006 IDEAL ID10 2C O1] SCHLUMBERGER Survey Report 4-Jan-2006 10:20:20 Page 9 of 11 Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - (f t) (deg) (deg) (ft) (ft) (ft) (ft) (f t) (ft) (deg) 100f) type (deg) 211 14596.88 88.23 95.16 31.51 8954.77 8394.15 -6566.65 5256.61 8411.47 141.32 5.69 BP _MWD+IFR+MS 212 14628.60 85.94 94.10 31.72 8956.38 8414.35 -6569.20 5288.18 8433.23 141.17 7.95 BP _MWD+IFR+MS 213 14659.58 85.46 92.25 30.98 8958.70 8433.45 -6570.92 5319.02 8453.93 141.01 6.15 BP _MWD+IFR+MS 214 14692.14 84.21 92.99 32.56 8961.63 8453.24 -6572.40 5351.42 8475.50 140.85 4.46 BP _MWD+IFR+MS 215 14724.50 84.50 93.48 32.36 8964.82 8473.17 -6574.21 5383.57 8497.24 140.69 1.75 BP MWD+IFR+MS 216 14755.81 84.74 94.16 31.31 8967.75 8492.71 -6576.29 5414.67 8518.58 140.53 2.29 BP _MWD+IFR+MS . 217 14787.55 85.06 93.91 31.74 8970.58 8512.62 -6578.52 5446.21 8540.38 140.38 1.28 BP _MWD+IFR+MS 218 14820.18 85.75 94.53 32.63 8973.19 8533.19 -6580.91 5478.64 8562.94 140.22 2.84 BP _MWD+IFR+MS 219 14851.36 84.55 95.96 31.18 8975.83 8553.26 -6583.75 5509.58 8584.94 140.08 5.97 BP _MWD+IFR+MS 220 14883.73 83.67 96.82 32.37 8979.15 8574.55 -6587.33 5541.58 8608.26 139.93 3.79 BP MWD+IFR+MS 221 14914.65 84.11 97.26 30.92 8982.44 8595.13 -6591.10 5572.09 8630.81 139.79 2.01 BP _MWD+IFR+MS 222 14946.39 85.48 100.01 31.74 8985.32 8616.94 -6595.85 5603.34 8654.63 139.65 9.65 BP _MWD+IFR+MS 223 14979.02 88.61 99.16 32.63 8987.00 8639.82 -6601.27 5635.47 8679.59 139.51 9.94 BP _MWD+IFR+MS 224 15010.21 91.24 99.31 31.19 8987.04 8661.57 -6606.28 5666.25 8703.41 139.38 8.45 BP _MWD+IFR+MS 225 15042.38 91.99 98.55 32.17 8986.14 8683.88 -6611.27 5698.02 8727.90 139.24 3.32 BP MWD+IFR+MS 226 15074.66 92.05 98.69 32.28 8985.00 8706.14 -6616.10 5729.91 8752.41 139.11 0.47 BP _MWD+IFR+MS 227 15106.85 92.90 98.85 32.19 8983.61 8728.38 -6621.01 5761.70 8776.95 138.97 2.69 BP _MWD+IFR+MS 228 15137.83 94.42 97.88 30.98 8981.63 8749.61 -6625.50 5792.28 8800.45 138.84 5.82 BP _MWD+IFR+MS 229 15170.55 95.19 99.24 32.72 8978.89 8772.08 -6630.36 5824.52 8825.34 138.70 4.76 BP _MWD+IFR+MS 230 15202.09 95.76 99.40 31.54 8975.88 8794.02 -6635.44 5855.50 8849.63 138.57 1.88 BP _MWD+IFR+MS • 231 15234.13 94.76 98.49 32.04 8972.94 8816.16 -6640.40 5887.02 8874.23 138.44 4.21 BP _MWD+IFR+MS 232 15266.13 94.55 99.94 32.00 8970.35 8838.40 -6645.51 5918.50 8898.96 138.31 4.56 BP _MWD+IFR+MS 233 15298.74 94.09 98.58 32.61 8967.89 8861.09 -6650.74 5950.60 8924.23 138.18 4.39 BP _MWD+IFR+MS 234 15329.52 94.16 97.49 30.78 8965.68 8882.04 -6655.03 5980.99 8947.72 138.05 3.54 BP _MWD+IFR+MS 235 15361.88 93.99 94.19 32.36 8963.38 8903.15 -6658.32 6013.10 8971.65 137.91 10.19 BP MWD+IFR+MS 236 15393.46 93.45 91.60 31.58 8961.33 8922.50 -6659.91 6044.57 8993.96 137.77 8.36 BP _MWD+IFR+MS 237 15425.23 93.85 92.76 31.77 8959.31 8941.66 -6661.11 6076.25 9016.17 137.63 3.86 BP _MWD+IFR+MS 238 15456.52 94.00 92.01 31.29 8957.16 8960.61 -6662.41 6107.44 9038.17 137.49 2.44 BP _MWD+IFR+MS 239 15489.14 94.42 92.45 32.62 8954.77 8980.30 -6663.68 6139.95 9061.10 137.34 1.86 BP _MWD+IFR+MS 240 15521.25 94.0]. 92.96 32.11 8952.41 8999.88 -6665.19 6171.94 9083.92 137.20 2.03 BP MWD+IFR+MS [(c)2 006 IDEAL ID10 2C O1] ~ Y SCHLUMBERGER Survey Report 4-Jan-2006 10:20:20 Page 10 of 11 Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - (ft) (deg) (deg) (f t) (f t) (ft) (ft) (ft) (ft) (deg) 100f) type (deg) 241 15553.46 92.10 95.30 32.21 8950.69 9020.18 -6667.51 6204.01 9107.44 137.06 9.37 BP _MWD+IFR+MS 242 15584.72 90.67 96.21 31.26 8949.94 9040.58 -6670.64 6235.11 9130.94 136.93 5.42 BP _MWD+IFR+MS 243 15615.52 90.56 96.10 30.80 8949.61 9060.85 -6673.94 6265.73 9154.28 136.81 0.51 BP _MWD+IFR+MS 244 15649.18 91.38 96.48 33.66 8949.04 9083.05 -6677.63 6299.18 9179.89 136.67 2.68 BP _MWD+IFR+MS 245 15680.62 90.88 95.69 31.44 8948.42 9103.71 -6680.96 6330.44 9203.79 136.54 2.97 BP _MWD+IFR+MS 246 15711.40 90.06 95.65 30.78 8948.16 9123.77 -6684.00 6361.06 9227.08 136.42 2.67 BP _MWD+IFR+MS • 247 15743.71 90.47 95.11 32.31 8948.01 9144.70 -6687.03 6393.23 9251.48 136.29 2.10 BP _MWD+IFR+MS 248 15776.09 91.58 95.59 32.38 8947.43 9165.66 -6690.05 6425.46 9275.96 136.16 3.73 BP _MWD+IFR+MS 249 15807.40 91.64 94.08 31.31 8946.55 9185.71 -6692.69 6456.65 9299.48 136.03 4.82 BP _MWD+IFR+MS 250 15839.66 90.30 93.79 32.26 8946.01 9205.98 -6694.90 6488.83 9323.44 135.90 4.25 BP _MWD+IFR+MS 251 15872.02 90.80 96.11 32.36 8945.70 9226.76 -6697.69 6521.06 9347.91 135.77 7.33 BP _MWD+IFR+MS 252 15903.18 91.52 96.81 31.16 8945.07 9247.38 -6701.20 6552.02 9372.03 135.64 3.22 BP _MWD+IFR+MS 253 15935.77 91.93 97.01 32.59 8944.09 9269.14 -6705.12 6584.36 9397.47 135.52 1.40 BP _MWD+IFR+MS 254 15967.69 91.09 96.78 31.92 8943.25 9290.45 -6708.95 6616.04 9422.42 135.40 2.73 BP _MWD+IFR+MS 255 15998.98 90.45 96.74 31:29 8942.82 9311.29 -6712.63 6647.10 9446.87 135.28 2.05 BP _MWD+IFR+MS 256 16031.32 90.85 96.38 32.34 8942.46 9332.74 -6716.33 6679.23 9472.13 135.16 1.66 BP _MWD+IFR+MS 257 16063.25 90.51 96.71 31.93 8942.08 9353.92 -6719.96 6710.95 9497.09 135.04 1.48 BP _MWD+IFR+MS 258 16094.72 90.83 96.50 31.47 8941.71 9374.81 -6723.58 6742.21 9521.76 134.92 1.22 BP _MWD+IFR+MS 259 16126.69 90.92 96.87 31.97 8941.22 9396.07 -6727.31 6773.96 9546.89 134.80 1.19 BP _MWD+IFR+MS 260 16158.79 90.98 98.25 32.10 8940.69 9417.78 -6731.53 6805.77 9572.46 134.69 4.30 BP _MWD+IFR+MS • 261 16190.03 91.58 98.07 31.24 8939.99 9439.14 -6735.96 6836.69 9597.58 134.57 2.01 BP _MWD+IFR+MS 262 16222.46 89.24 97.93 32.43 8939.76 9461.26 -6740.47 6868.80 9623.64 134.46 7.23 BP_MWD+IFR+MS 263 16254.43 88.77 99.13 31.97 8940.31 9483.27 -6745.22 6900.41 9649.54 134.35 4.03 BP _MWD+IFR+MS 264 16286.16 89.20 99.50 31:73 8940.88 9505.43 -6750.35 6931.72 9675.53 134.24 1.79 BP _MWD+IFR+MS 265 16317.62 89.67 100.93 31.46 8941.19 9527.76 -6755.93 6962.68 9701.62 134.14 4.78 BP _MWD+IFR+MS 266 16349.89 89.93 100.34 32.27 8941.30 9550.83 -6761.88 6994.39 9728.55 134.03 2.00 BP _MWD+IFR+MS 267 16382.04 91.33 100.68 32.15 8940.95 9573.76 -6767.75 7026.00 9755.36 133.93 4.48 BP _MWD+IFR+MS 268 16413.72 91.92 100.85 31.68 8940.05 9596.45 -6773.66 7057.11 9781.89 133.83 1.94 BP _MWD+IFR+MS 269 16445.13 92.47 99.65 31.41 8938.84 9618.74 -6779.25 7088.00 9808.05 133.72 4.20 BP _MWD+IFR+MS 270 16477.23 94.62 99.48 32.10 8936.86 9641.22 -6784.57 7119.59 9834.58 133.62 6.72 BP _MWD+IFR+MS [(c)2 006 IDEAL ID10 2C O1] SCHLUMBERGER Survey Report 4-Jan-2006 10:20:20 Page 11 of 11 Seq Measured Incl Azimuth Course TVD Vertical Displ Displ Total At DLS Srvy Tool # depth angle angle length depth section +N/S- +E/W- displ Azim (deg/ tool Corr - (ft) (deg) (deg) (ft) (ft) (ft) (ft) (ft) (ft) (deg) 100f) type (deg) 271 16509.08 94.18 100.84 31.85 8934.42 9663.74 -6790.17 7150.84 9861.09 133.52 4.48 BP_MWD+IFR+MS 272 16540.76 94.52 101.70 31.68 8932.01 9686.57 -6796.35 7181.82 9887.82 133.42 2.91 BP_MWD+IFR+MS 273 16573.02 94.92 102.63 32.26 8929.36 9710.14 -6803.12 7213.25 9915.31 133.32 3.13 BP_MWD+IFR+MS 274 16603.93 95.09 103.23 30.91 8926.66 9733.00 -6810.01 7243.26 9941.89 133.23 2.01 BP_MWD+IFR+MS 275 16635.74 95.65 103.11 31.81 8923.69 9756.60 -6817.23 7274.10 9969.31 133.14 1.80 BP_MWD+IFR+MS 276 16664.52 97.21 102.95 28.78 8920.46 9777.86 -6823.68 7301.96 9994.06 133.06 5.45 BP_MWD+IFR+MS . 277 16721.00 97.21 102.95 56.48 8913.38 9819.47 -6836.23 7356.57 10042.57 132.90 0.00 Projection to TD [(c)2006 IDEAL ID10 2C O1] • • Schlumberger Drilling & Measurements MWD/LWD Log Product Delivery Customer BP Exploratio n (Alaska) Inc. Dispatched To: AOGCC -Librarian t ~ ~ ~ ~~ ~ Well No Z-46A 0" Date Dispatched: 10-Jan-06 Installation/Rig Nabors 7ES Dispatched By: Mauricio Perdomo LWD Log Delivery V1.1, 10-02-03 Data No Of Prints No of Floppies Surveys 2 1 1~ 1 ~~ ~Q~6 ~ F B ~ m '~ to ~ ~ ~ i, Received By: Please sign and return to: Drilling & Measurements LWD Division 2525 Gambell Street, Suite 400 Anchorage, Alaska 99501 nrosel@slb.com Fax: 907-561-8317 ~~ l~ ~ ,~, ~ ~ ~. ~ ~ ~ ~ ~~. ~ ~) ~~ ~a, ~~`~, ~ FRANK H. MURKOWSKI, GOVERNOR ~7~A OIL ~ ~ 333 W. 7~" AVENUE, SUITE 100 COI~TST'iR~A"1`IO1~T COl-IIrIISSIOI~T ~ ANCHORAGE, ALASKA 99501-3539 PHONE (907) 279-1433 Dave Wesley FAX (907) 276-7542 Senior Drilling Engineer BP Exploration (Alaska), Inc. P.O. Box 196612 Anchorage, AK 99519-6612 Re: PBU Z-46A BP Exploration (Alaska), Inc. Permit No: 205-203 Surface Location: 4297' FSL, 2940' FEL, SEC. 19, T11N, R12E, UM Bottomhole Location: 2907' FSL, 1141' FEL, SEC. 29, T11N, R12E, UM Dear Mr. Wesley: Enclosed is the approved application for permit to drill the above referenced development well. This permit to drill does not exempt you from obtaining additional permits or an approval required by law from other governmental agencies and does not authorize conducting drilling operations until all other required permits and approvals have been ,issued. In addition, the Commission reserves the right to withdraw the permit in the event it was erroneously issued. Operations must be conducted in accordance with AS 31.05 and Title 20, Chapter 25 of the Alaska Administrative Code unless the Commission specifically authorizes a variance. Failure to comply with an applicable provision of AS 31.05, Title 20, Chapter 25 of the Alaska Administrative Code, or a Commission order, or the terms and conditions of this permit may result in the revocation or suspension of the permit. Please provide at least twenty- four (24) hours notice for a representative of the Commission to witness any required test. Contact the Commission's petroleum field inspector at (907) 659- 3607 (pager). DATED this~%~ day of December, 2005 cc: Department of Fish 8v Game, Habitat Section w/ o encl. Department of Environmental Conservation w/o encl. STATE OF ALASKA ~~` y,.~~ ~~~® ALASKA OIL AND GAS CONSERVATION COISSION PERMIT TO DRILL ~t~.~ 1 20°~ 20 AAC 25.005 /~laska Uii ~ ~a vurts, ~ommisSi0t1 ia. Type of work ^ Drill ®Redrill ^ Re-Entry 1b. Current Well Class ^ Exploratory ®Development f1C iple Zone ^ Stratigraphic Test ^ Service ^Development Gas ^ 5'fngle Zone 2. Operator Name: BP Exploration (Alaska) Inc. 5. Bond: ®Blanket ^ Single Well Bond No. 6194193 11. Well Name and Number: PBU Z-46A 3. Address: P.O. Box 196612, Anchorage, Alaska 99519-6612 6. Proposed Depth: MD 16495 TVD 8850 12. Field !Pool(s): Prudhoe Bay Field / Prudhoe Bay 4a. Location of Well (Governmental Section): Surface: 4297' FSL 19 T11 N R12E 2940' FEL SEC UM 7. Property Designation: ADL 028248 Pool , , , , , . Top of Productive Horizon: 2475' FSL, 4831' FEL, SEC. 29, Ti 1 N, R12E, UM 8. Land Use Permit: 13. Approximate Spud Date: December 15, 2005 Total Depth: 2907' FSL, 1141' FEL, SEC. 29, T11N, R12E, UM 9. Acres in Property: 2560 14. Distance to Nearest Property: 5730' 4b. Location of Well (State Base Plane Coordinates): Surface: x- 599738 y- 5959100 Zone- ASP4 10. KB Elevation (Height above GL): g2.g feet 15. Distance to Nearest Well Within Pool Z-17 is 600' away at 11960' MD 16. Deviated Wells: Kickoff Depth: 4475 feet Maximum Hole Angle: 97.19 de rees 17. Maximum Anticipated Pressures in psig (see 20 AAC 25.035) Downhole: 3508 Surface: 2643 18. Casing Program: Size. 'Specifications Setting Depth To Bottom uantity o ement c.f. or sacks Hole Casin Wei ht Grade Cou lin Len th MD TVD MD TVD includin sta a data 9-7/8" 7-5/8" 29.7# L-80 BTC-M 12044' Surface Surface 12044' 8733' 88 sx Class 'G' 6-3/4" 4-1/2" 12.6# 13Cr80 VAM To 4601' 11894' 8627 1649,= 8933' 37 sx Class 'G' 19. PRESENT WELL CONDITION SUMMARY (To be completed for Redrill AND Re-entry Operations) Total Depth MD (ft): 15828 Total Depth TVD (ft): 9002 Plugs (measured): 4650 & 15143 Effective Depth MD (ft): 4650 Effective Depth TVD (ft): 2964 Junk (measured): None Casin Len th Size Cement Volume MD TVD r rl ndu or 108' 20" 60 sx Arctic Set A rox. 108' 108' 4446' 10-3/4" 27 sx AS Lite, 450 sx Class 'G' 4475' 2920' 15269' 7-5/8" 535 sx AS Lite, 271 sx Class 'G' 15293' 8800' Prod i n Perforation Depth MD (ft): N/A Perforation Depth TVD (ft): N/A 20. Attachments ®Filing Fee, $100 ^ BOP Sketch ®Drilling Program ^ Time vs Depth Plot ^ Shallow Hazard Analysis ® Property Plat ^ Diverter Sketch ^ Seabed Report ®Drilling Fluid Program ®20 AAC 25.050 Requirements 21. Verbal Approval: Commission Representative: Date: 22. I hereby certify that the foregoing is true and correct to the best of my knowledge. Contact Shane Gagliardi, 564-5251 Printed Name D ve Wesley Title Senior Drilling Engineer // Prepared By Name/Number: Si nature ~2° Phone 564-5153 Date / /f~l~ ~ Sondra Stewman, 564-4750 Commission Use Only Permit To Drill Number: .. API Number: 50- 029-23280-01-00 Permit A prov I ~ Date: ~ See cover letter for other requirements Conditions of Approval: Samples Required ^ Yes~No Mud Log Required ^ Yes ~No Hyd gen Sulfide Measures Yes ^ No Directional Survey Required ,'Yes ^ No Other: ~ -t/St' ~O P f '~o ~ SO n ~v . ~.P.,~ ZS o35 C~.~ <<~ a,(, ~`~'~"e }30 ~G ~~ ~yot^.~dcch.e i s ~~ro~Ge~. APPROVED BY ~~/~~ A roved THE COMMISSION Date G Form t0-aol~ievis 6/ 4 ~ ~ ~ ~ ~ ~ ~ Submit In Duplicate • • Well Name: Z-46A Planned Well Summary Well Z-46A Well Horizontal Target Ivishak Zone Tyke Producer Ob'ective 4 AFE Number: PBD4P2418 Surface Northin Eastin Offsets TRS Location 5,959,100' 599,737.5 983' FNL / 2,940' FEL 11 N, 12 E, 19 API Number: 50-029-23280-01 Target Northin Eastin Offsets TRS Location 5,952,046.67 603,248.19 2,475' FSL / 4831' FEL 11 N, 12 E, 29 Bottom Northin Eastin Offsets TRS Location 5,952,530.00 606,930.00 2,907' FSL / 1141' FEL 11 N, 12 E, 29 Planned KOP: 4,475' and / 2,885' tvd Planned TD: 16,495' and / 8,850' tvd Ri Nabors CBE: 54.4' RTE: 82.9' Estimated S ud Date: 12/16/2005 Planned O eratin Da s: 27.2 days Directional Program A roved Well Ian: ' W 08 Exit oint: 4,475' and / 2,885' tvd Maximum Hole Inclination: 97.19° from -14,730' to 14,986' in the tanned 6 3/4" roduction section. Proximity Issues: All surrounding wells pass major risk criteria. Wells Z-18 and Z-19 are the 'closest nei hborin wells, each at 15' center. Survey Program: Standard MW D with IIFR /Cassandra. Nearest Well Within Pool: Well Z-17 with center-to-center distance of 600' at --11,960' md. Nearest Pro ert Line PBU bounda 5,730' southwest of TD Logging Program Hole Section: Required Sensors /Service 9'/e" intermediate: Real time MWD Dir/GR/Res/PWD -Recorded Neutron/Densi ; USIT 6 3/a" roduction: Real time MWD Dir/GR/Res/AIM -Recorded Neutron/Densit O en Hole: None 'tanned Z-46A Permit to Drill Application Page 1 • Mud Program • Hole Section / o eration: Drillin 9 %8" interval, surface shoe - 9,300 To HRZ T e Densi Viscosi PV YP Chlorides API FL H LSND 8.8 - 9.2 45 - 60 10 -16 20 - 24 <600 4.0 - 7.0 9.5 -10 Hole Section / o eration: Drillin 9'/8" interval, 9,300 HRZ&TKNG -12,199 TD T e Densit Viscosi PV YP Chlorides API FL H LSND 1.0 45 - 60 18 - 24 20 - 26 <600 3.0 - 4.0 9.5 -10 Hole Section / o eration: Drillin 6 3/a" roduction interval to 16,606' TD T e Densit Viscosit PV YP LSRV HTHP FL H Flo-Pro SF g 4 - 8.5 45 - 55 6 -12 24 - 30 >25,000 < 8.0 9.5 Casing /Tubing Program Hole Size Casing/Tubing Size Wt. Grade Connectio n Length Top and / tvd Bottom and / tvd 9'/8" 7 5/8" 29.7# L-80 BTC-M 12,044' Surface 12,044' / 8,733' 6 3/a" 4 ~/z" 12.6# 13CR-80 VamTo 4,601' 11,894'/ 8,627' 16,495' / 8,933' Tubin 3'/z" 9.2# 13CR-80 Vam To 11,894' Surface 11,894' / 8,627' Cementing Program Casin Strin 7 5/8", 29.7#, L-80, BTC-M Intermediate c Ion strin 2 Sta e Slurry Design Basis: Sta e 1 Tail slurry. 3,594' of 7 5/8" X 9'/8" annul wi 30% excess, plus -86' of 7 5/8", 29.7#, shoe tract. Tail TOC to ~ ,4 and @ sta a tool above CM1. Pre-Flush Sta e 1 : None Planned Sacer Fluid Sta e 1 50.0 bbis MudPush II at 11.50 Slur T e 15.8 Class `G' liner slur with `GASBLOK' additive T il Sl Mix method Batch mix a urry: St 1 BHST /BHCT 230° F / 170° F ) ( age Thickenin time 4 hrs 26 min Slur Volume 82.7 bbl / 1026 cf / 8 sx Class `G', 15.8 2.1 cf/sk. Slurry Design Basis: Sta e 2 Lead TOC to 5,8 8' md, 500' and abo the Ma Sand. Lead slurry. 2' of 7 5/8" X 9'/8" annulus with 30% excess. Pre-Flush Sta e 2 : 15.0 bbls CW 100 C«~ 8.32 S acer Fluid Sta e 2 : 50.0 bbls MudPush II at 12.0 Slur T e 12.5 Lite Crete slur L d Sl Mix method Batch mix urry: ea St 2 BHST /BHCT 80° F / 138° F age ) ( Thickenin time 3 hrs 12 min Slur Volume 105 bbis / 590 cf / 0 sx Class `G', 12.5 .9 cf/sk. Casin Strin 4'/z", 12.6#, 13Cr-80, Vam To Pro c ion liner Slur Desi n Basis: ry g Lead slurry. None planned. Tail slurry. 4,451' of 4'h" X 6 3/a" annulus with 30% excess, plus 150' of 4 ~/2" x 7 5/8" liner lap, plus 200' of 4" drill pipe X 7 5/8" annulus, plus ~86' of 4'h", 12.6#, shoe tract. Tail TOC to --11,894' and Pre-Flush: 15.0 bbis CW 100 S acer Fluid: 30.0 bbls MudPUSH II at 10.0 Slur T e 15.8 Class `G' liner slur with `GASBLOK' additive Mix method Batch mix Tail Slurry: BHST /BHCT 230°F / 170° F Thickenin time 4 hrs 26 min ~ Slur Volume 146.8 bbl / 824 cf / 37~sx Class `G', 15.8 cf/sk. ~- ~ Z-46A Permit to Drill Application Page 2 • Casing /Formation Integrity Testing Test Test Point Test Type Test pressure 10 3/a" Casin Cement Plu to Surface 30 min recorded 3,500 si surface 10 3/a" Casin Shoe 20' new formation be and LOT Min 11.8 EMW 7 5/s" Casin Float a ui ment to surface 30 min recorded 3,500 si surface 7 5/8" Shoe 20' new formation be and FIT 10.0 EMW 4'/z" Production Liner Float a ui ment to surface 30 min recorded 3,500 si surface Well Control Well control equipment consisting of 5,000 psi working pressure pipe rams, blind/shear rams, and an annular preventer will be installed and is capable of handling maximum potential surface pressures. The ram configuration will be: Well Interval: 9 %8" intermediate interval into TSAG Maximum antici ated BHP: 3,508 si at 8,650' sstvd. Maximum surface ressure: 2,643 SI (based upon BHP and a full column of gas from TD ~ 0.10 psi/ft) Calculated kick tolerance: 50.6 bbls with 11.8 EMW LOT Planned BOPE test ressure: 250 si low / 3,500 si hi h -14 da test c cle Drillin o erations BOPE configuration for 7 5/8" intermediate casing (top to bottom . Annular preventer, pipe rams, blind/shear rams. Well Interval: 6 3/a" roduction interval horizontal in Ivishak Zone 4 sands Maximum antici ated BHP: 3,590 si at 8,850' sstvd. Maximum surtace pressure: 2,704 psi (based upon BHP and a full column of gas from TD ~ 0.10 psUft) Calculated kick tolerance: Infinite with 10.0 EMW FIT. Planned BOPE test ressure: 250 si low / 3,500 si hi h - 14 da test c cle Drillin o erations Planned com letion fluid: 8.6 seawater / 7.1 Diesel BOPE and drilling fluid system schematics are currently on file with the AOGCC. BPXA requests a variance to the provisions of 20 AAC 25.035 (e)(10)C regarding the function pressure '` test requirement after the use of BOP ram type equipment for other than well control or equivalent purposes, except when the routine use of BOP ram type equipment may have compromised their effectiveness. (Example would be when pipe rams are inadvertently closed on a tool joint during routine operations.) The activities associated with this request will not compromise the integrity of the BOP equipment. Disposal Annular No annular injection in this well. Injection: Cuttings Cuttings generated from drilling operations are to be hauled to the Grind and Inject Handlin station at DS-04. Any metal cuttings should be sent to the North Slope Borough. Fluid All drilling and completion fluids and other Class II wastes are to be hauled to DS-04 for Handlin injection. All Class 1 wastes are to be hauled to Pad 3 for disposal. Z-46A Permit to Drill Application Page 3 • Geologic Prognosis • Est. Formation Tops Uncertainty Est. Pore Press. Formation MD TVD TVDss (feet) (Psi) (ppg) KOP 4475 2885 -2945 +/-50' 1355 8.8 UG4 4876 3108 -3025 +/-50' 1412 8.8 UG4A 4925 3163 -3080 +/-50' 1438 8.8 UG3 5354 3503 -3420 +/-50' 1610 8.8 UG1 5993 4018 -3935 +/-50' 1835 8.8 Ma 6328 4288 -4205 +/-50' 1962 8.8 Mb1 6390 4338 -4255 +/-50' 1980 8.8 Mb2 6446 4383 -4300 +/-50' 2010 8.8 Mc 6533 4453 -4370 +/-50' 2049 8.8 Na 6657 4553 -4470 +/-50' 2082 8.8 Nb 6688 4578 -4495 +/-50' 2095 8.8 OA 6899 4778 -4665 +/-50' 2167 8.8 OBa 6980 4813 -4730 +/-50' 2194 8.8 OBd 7154 4953 -4870 +/-50' 2254 8.8 OBf 7265 5043 -4960 +/-50' 2302 8.8 OBf Base 7315 5083 -5000 +/-50' 2325 8.8 CM-2 7787 5463 -5380 +/-50' Fault 1 8568 6093 -6010 +/-100' CM-1 8680 6183 -6100 +/-50' THRZ 9251 6643 -6560 +/-50' K-1 9586 6913 -6830 +/-50' TKD absent absent absent n/a TKC4 9624 6943 -6860 +/-50' 3600 10.0 LCU 9673 6983 -6900 +/-50' TMLV 9673 6983 -6900 +/-50' Fault 2 10279 7458 -7375 +/50' TKNG 10300 7473 -7390 +/-150' TJG 10341 7502 -7420 +/50' TJF 10344 7858 -7775 +/50' TJE 10832 8023 -7940 +/50' TJD 11407 8273 -8190 +/50' TJC 11712 8493 -8410 +/50' TJB 11850 8593 -8510 +/50' TJA 11933 8653 -8570 +/50' TSAG 12044 8734 -8650 +/30' 3550 7.8 TSHU 12065 8748 -8665 +/30' 3550 7.8 TEIL 12240 8843 -8760 +/30' 3570 7.8 TSAD - 46P 12645 8883 -8800 +/30' 3600 7.9 42P 13035 8983 -8900 +/30' 3600 7.8 Target 2 13191 9003 -8920 +/30' 3600 7.8 Target 3 (invert) 13956 9023 -8940 +/30' 3600 7.7 Target 4 (start turn to east) 14365 9023 -8940 +/30' 3600 7.7 Target 5 15037 8963 -8900 +/30' 3600 7.8 44P -8910 +/30' 3600 7.8 45P -8880 +/30' 3600 7.8 TD (46P) 16495 8933 -8850 +/30' 3600 7.8 OWC -8950 +/50' Z-46A Permit to Drill Application Page 4 • • TD Criteria TD Criteria: Drill well according to plan, geo steering as necessary to undulate in Upper Ivishak Fault Prognosis Fault Formation Encountered MD Intersect TVDss Intersect Estimated Throw Direction of Throw Uncertainty Fault #1 Lower CM2 8,569' -6010 60' Down SW +/- 100' MD Fault #2 TKNG 10,279' -7375 100' Down SW +/- 150' MD Fault #3 Ivishak 13,500' -8900 10' Down NE +/- 100' MD Fault #4 Ivishak 13,950' -8900 10' Down SW +/- 100' MD Fault #5 Ivishak 14,800' -8900 10' Down SW +/- 100' MD Z-46A Permit to Drill Application Page 5 • • Operations Summary Rip Operations: 1. MIRU Schlumberger Wireline unit. 2. Make GR/JBJCCL run to approx 5,000' md. 3. Run USIT from TOC to approx 6,071' (est TOC in 9-%8" x 7 5/8" annulus). 4. Set Wireline CIBP C~ 4,625'. RDMO Schlumberger. 5. PU 7-5/s" Baker mechanical casing cutter and TIH to 4,575' and make casing cut approx 100' and below 10-3/a" casing shoe. 6. Change over to 7 5/e" rams and test. 7. ND tree and tack weld emergency slips to 7-5/8" casing. NU tree and test. 8. POOH and LD 7 5/a" casing. 9. TIH w/ 4" drill pipe and spot 17 ppg cement kick off plug on CIBP C«3 4,575'. Pump sufficient volume of cement to place estimated top 200' inside of the 10-3/a" surface casing. 10. POOH and LD 4" DP. 11. P/U sufficient length of 5" drill pipe and stand back in the derrick. 12. MU 9-%8" MWD/LWD drilling assembly and RIH, P/U 5" drill pipe, to kick off plug. Test the 10-3/a" casing to 3,500 psi for 30 minutes. Record the test. ri out cement. Displace the well to 8.8 ppg LSND drilling fluid. 14. Drill approximately 20' new formation and perform a LOT. 15. Drill ahead, according to directional proposal, to 100' above the HRZ. 16. Increase mud weight, via spike fluid, to 11.0 ppg. ...~ ~ 17. Drill according to directional plan to intermediate TD, approximately 5' and below the top of the Sag. ~ I~wS t° ~ ~ t Circulate bottoms up as necessary for sample collection to properly identify shale/siltstone cap. ~~t~U~/(• 18. Condition hole as necessary. POOH, UD all 5" drill pipe. 19. R/U, run, and cement the 7 5/8", 29.7# intermediate casing. This cement job will be a two stage job to ensure that the Schrader sands are covered. Ensure that cement has reached 500 psi compressive strength prior to pumping second stage. 20. Install casing pack-off and test per FMC representative. 21. Freeze-protect the 10-3/a" x 7-5/8" annulus, once the cement has reached 500 psi. compressive strength. Confirm that the OA is open. 22. M/U a 6-3/a" drilling assembly with Dir/GR/Res. RIH, P/U additional 4" drill pipe as required. 23. Pressure test the 7 5/s" casing to 3,500 psi for 30 minutes. Record the test. 24. Displace the well to 8.4 ppg Flo-Pro SF based fluid. 25. Drill out shoe and 20' of new formation. 26. Attempt an FIT to 10.0 ppg EMW. 27. Drill ahead, per directional proposal and rig site geologist, to well TD at approximately 16,495' md. 28. Condition the hole as required in preparation of running and cementing the 4-'/z" production liner. Spot liner running pill on bottom. POOH, UD excess 4" drill pipe, and UD BHA. 29. R/U and run the 4-'/z", 12.6#, 13Cr-80, Vam Top liner. Cement the liner per Dowell program. Release from the liner and set the packer. Circulate excess cement to surface. 30. Displace the well to 8.6 ppg brine above the liner top. POOH and UD LRT. 31. R/U and pressure-test the casing x liner string to 3,500 psi for 30 minutes. Record the test. 32. R/U, M/U Schlumberger 2-~/z", 4 spf, DPC perforating guns and 2 %8" drill pipe as required. RIH to tag and perforate per subsurface team. POOH, UD all drill pipe. 33. R/U and run a 3-'/z", 9.2#, 13Cr-80, Vam Top completion w/ downhole gauge and I-wire. Space and land the tubing with the tubing tail inserted into the liner tie back sleeve. RILDS. 34. Reverse circulate 8.6 ppg brine and Corrosion Inhibitor. 35. Drop ball/rod and set packer. 36. Individually test the tubing and annulus to 3,500 psi for 30 minutes. Record each test. 37. Shear DCR valve. 38. Install TWC and test. 39. N/D the BOPE. 40. N/U the adapter flange and tree. Test tree and adapter to 5,000 psi. 41. RU DSM. Pull TWC. 42. R/U circulating lines and test. Freeze-protect the tubing and annulus to 2,000'. Allow the diesel to U-tube to equilibrium. 43. Install a BPV and VR plugs in the annulus valves. 44. Secure, rig down and move off. Z-46A Permit to Drill Application Page 6 • • Post-Ria Oaerations: 1. MI / RU slick line. Pull the ball and rod / RHC plug from landing nipple below the production packer. 2. Install the well house, instrumentation, and flow line. Estimated Spud Date: 12/15/2005 Shane Gagliardi Operations Drilling Engineer 564-5251 Z-46A Permit to Drill Application Page 7 • • Phase 2: Decomplete Well Planned Phase Time Planned Phase Cost 43.95 hours $197,627 Reference RP • "Casing Cut and Pull w/ Baker Back Off Tool" RP • "Decompletions" RP Issues and Potential Hazards - BOP test during this phase is 7 days. - Monitor Annulus for pressure before any work is done on the tree. - Ensure emergency slips are welded the Intermediate casing prior to pulling to prevent lost junk in the hole. Phase 5: Drill 9-'/s" Intermediate Hole Interval Planned Phase Time Planned Phase Cost 151.2 hours $908,302 Reference RP • "Standard Operating Procedure for Leak-off and Formation Integrity Tests" RP • "Shale Drilling, Kingak and HRZ" RP • "Prudhoe Bay Directional Guidelines" • "Lubricants for Torque and Drag Management" RP Issues and Potential Hazards - This well bore will drill the HRZ at -37° inclination, terminating in the top of the Sag. The HRZ will require a mud weight of 10.6 ppg. The mud weight will be increased to 11.0 ppg to avoid the additional weight up for the Kingak. Maintain mud weight at 11.0 ppg from above the HRZ to 7 5/a" casing point. Follow all shale drilling practices to minimize potential problems. - Two faults will be crossed in the intermediate section of hole. The potential for lost circulation or breathing is moderate. Monitor ECD and consult the Lost Circulation Decision Tree, embedded in the mud program, regarding LCM treatments and procedures. - In the past, several Z-pad wells have had shallow gas cut mud due to encountered overpressure (9.6 ppg EMW). Mud weights of 10.1 ppg-10.3 ppg were required. Gas cut mud, mud flow and oil in the returns may indicate that the overpressure is still present at which point the mud should be weighted up. - KICK TOLERANCE: In the scenario of 10.0 ppg pore pressure in the Kuparuk, a minimum fracture gradient of 11.8 ppg at the surface casing shoe, and 10.5 ppg mud in the hole, the kick tolerance is 50 bbls. Phase 6: Run and Cement 7 5/8" Intermediate Casing Planned Phase Time Planned Phase Cost 81.4 hours $675,723 Z-46A Permit to Drill Application Page 8 • • Reference RP • "Intermediate Casing and Cementing Guidelines" RP • "Freeze Protecting an Outer Annulus" RP Issues and Potential Hazards - Swab and surge pressure should be minimized with controlled casing running speeds and by breaking circulation slowly. Excessive swab /surge pressures could initiate HRZ and/or Kingak instability problems. - Differential Sticking is potentially a problem if lost- circulation occurs or if the casing is left stationary across permeable formations. Proper casing centralization will facilitate minimizing the potential for differential sticking. The 11.0 ppg LSND used for drilling the Kingak will create a 500 psi over-balance in the Schrader O Sands. There is a higher possibility of differential sticking with this mud weight. Minimize the amount of time spent stationary. Connection times should not be 20 minutes. This intermediate casing cement job is planned as a two stage job, the first stage consisting of 15.8 ppg class G to the stage tool C«~ 8,000' and and a second stage consisting of a 12.5 ppg Class G lead slurry to 500' above the Schrader Ma. The TOC lead will be 5,828' md, 4,000' tvd. The TOC tail will be 8,450' md, 5,900' tvd. - Ensure that the first stage cement has reach 500 psi compressive strength prior to pumping the second stage. Prior to opening the stage tool for the second stage, ensure that the closing plug has been loaded in the cement head. - Confirm that the intermediate casing cement has had adequate thickening time (70Bc value), prior to freeze protecting the 10-3/a" by 7-5/8" casing annulus. If necessary, ensure a double barrier is in place on the annulus, at the surface, until the cement has set up for at least 12 hours. - Request a UCA from Schlumberger Dowell. Confirm a cement compressive strength of 1,000 psi prior to pressure testing the 7-5/a" casing. Phase 7: Drill 6-3/a" Production Hole Interval Planned Phase Time Planned Phase Cost 231 hours $936,202 Reference RP • "Standard Operating Procedure: Leak-off and Formation Integrity Tests" • "Prudhoe Bay Directional Guidelines" RP Issues and Potential Hazards - There are three expected fault crossings in the production hole section; losses are not expected. However, should losses occur, follow the Lost Circulation Decision Tree, embedded in the mud program, regarding LCM treatments and procedures. Consider swapping to seawater if losses are substantial. - If a request is made to extend the well bore beyond the planned TD coordinate, regardless the revised TD location relative to the polygon, contact the drilling engineer prior to drilling ahead. It will be prudent to confirm proximity clearance. Z-46A Permit to Drill Application Page 9 • Phase 9: Run 4~/s" Production Liner Planned Phase Time Planned Phase Cost 40.93 hours $364,718 Reference RP • "Modified Conventional Liner Cementing" RP Issues and Potential Hazards - The planned production liner is a 4-'h", 12.6#, 13Cr-80, Vam Top solid liner throughout the production interval. - Differential sticking is possible. The 8.5 ppg Flo-Pro will be slightly over balanced to the Zone 4 Sands. Minimize the time the pipe is left stationary while running the liner. - Sufficient 4-~/z" liner will be run to extend -150' back up into the 7 5/8' casing shoe. - Ensure the 4'/i" liner top packer is set prior to POOH. Phase 10: DPC Perforate Planned Phase Time Planned Phase Cost 40.7 hours $748,921 Reference RP • "Drill Pipe Conveyed Perforating" RP Issues and Potential Hazards - The well will be DPC perforated, -100psi overbalanced, after running the 4-~h" liner. Ensure all personnel are well briefed on Schlumberger's perforating procedures and that all responsibilities are understood. Only essential personnel should be present on the rig floor while making up DPC guns. - Expect to lose fluid to the formation after perforating. Have ample 8.6 ppg brine on location and be prepared with LCM if necessary. Phase 12: Run 3-'/2" 13Cr-80 Completion Planned Phase Time Planned Phase Cost 25.7 hours $658,450 Reference RP • "Completion Design and Running" RP • "Tubing connections" RP Issues and Potential Hazards - Diesel will be used to freeze protect the well. The diesel flash point is 100° F. Diesel vapor pressure is ~ 0.1 Asia at 100° F. - The completion, as designed, will be to run a 3-'/z", 9.2# , 13Cr-80, Vam Top production tubing string, stinging into the 4 ~/z" liner tieback sleeve. A Halliburton Symphony gauge w/ I-wire back to surface will be run. Z-46A Permit to Drill Application Page 10 • • Phase 13: ND/NU/Release Rig Planned Phase Time Planned Phase Cost 12 hours $39,756 Reference RP • "Freeze Protecting an Inner Annulus" RP Issues and Potential Hazards - There are two near-by neighboring wells, Z-18 and Z-19. Z-18 is 1 T to the north and Z-19 is 17' to the south of Z-46A well. - Care should be taken while moving off of the well. Spotters should be employed at all times. - During ND BOPE/NU tree operations, the Z-46A well bore will be secured with the following barriers: o Tubing: TWC and kill weight fluid above ball/rod. o IA: Annulus valves and kill weight fluid. o OA: Annulus valve and kill weight fluid. - During RD/MO operations, the Z-46A well bore will be secured with the following barriers: o Tubing: BPV and kill weight fluid above ball/rod. o IA: Annulus valves and kill weight fluid. o OA: Annulus valve and kill weight fluid. Z-46A Permit to Drill Application Page 11 • • Drifting Hazards and Contingencies POST THIS NOTICE IN THE DOGHOUSE I. Well Control A. The Ugnu is may be over pressured. A 9.9 ppg EMW was required in Z-39. II. Hydrates and Shallow gas A. Gas Hydrates are present at Z-pad and have been encountered in wells as close as Z-17 and Z- 19throughout the SV5, SV4 and SV3. Setting casing through the SV1 should keep hydrate exposure from extending past the surface hole; however, hydrates have been encountered below the SV1. Recommended practices and precautions for drilling hydrates should be followed in the surface hole. III. Lost Circulation/Breathing A. Lost circulation is possible. Z-23 and Z-14 had losses of 6,000 bbls 1,000 bbls respectively. B. Breathing is not expected in this well. IV. Kick Tolerance/Integrity Testing A. The 10-3/d' casing will be cemented to surface. B. The 75/8" casing will be cemented with 15.8 Ib/gal tail and 12.5 Ib/gal lead cement to 500' MD above the Top Schrader Ma 5,828' and in two stages. a. The Kick Tolerance for the surface casing is 50 bbls with 10.5 ppg mud, 11.8 ppg LOT, and a 10.0 ppg pore pressure. Integrity Testing - 11.8 ppg EMW LOT C. The 4-ih" production liner will be cemented with 15.8 ppg tail cement to the liner top. a. The Kick Tolerance for the intermediate casing is infinte with 8.5 ppg mud, 10.0 ppg FIT and a 9.5 ppg pore pressure. Integrity Testing -10.0 ppg EMW FIT V. Stuck Pipe A. Gravel beds below the Permafrost will tend to slough in when aerated (hydrate cut) mud is being circulated out. Ensure adequate mud viscosity is maintained to avoid stuck pipe situations. B. Tight hole, hole packing-off, and lost returns have been encountered in previous wells. on this pad. Pipe sticking tendency is possible if the HRZ shale gives problems. Back reaming at connections and good hole cleaning practices will contribute to favorable hole conditions C. We do not expect stuck pipe if the hole is kept adequately clean. VI. Hydrogen Sulfide Z Pad is not designated as an HZS site, however Standard Operating Procedures for HZS precautions should be followed at all times. Personal monitors must be worn at all times. Recent HZS data from the pad is as follows: Adjacent Producers at Surface: Adjacent Producers at TD: Z-17 10 ppm Z-16 10 ppm Z-18 N/A Z-12 N/A VII. Faults A. Five faults are expected to be crossed by Z-46A. No losses are expected to be associated with Fault Formation Encountered MD Intersect TVDss Intersect Estimated Throw Direction of Throw Uncertainty Fault #1 Lower CM2 8,569' -6010 60' Down SW +f- 100' MD Fault #2 TKNG 10,279' -7375 100' Down SW +/- 150' MD Fault #3 Ivishak 13,500' -8900 10' Down NE +/- 100' MD Fault #4 Ivishak 13,950' -8900 10' Down SW +/- 100' MD Fault #5 Ivishak 14,800' -8900 10' Down SW +/- 100' MD the faults. Details are listed below for reference: CONSULT THE Z PAD DATA SHEET AND THE WELL PLAN FOR ADDITIONAL INFORMATION Z-46A Permit to Drill Application Page 12 WELLHEAD= FMC KB. ELE1i = 82.5' BF. ELEV = 54' KOP = 400' Max Angle = 95 @ 16,629' Datum MD = Datum NO = I 10-3/4" CSG, 45.5#, L-80, BTC ID = 9.950" I I 4475' I HES 7-5/8" ¢SV 15143' 7-5/8" CSG, 29.7#, L-80 BTGM, 0.04591 15294' bpf, ~ = 6.75" 6-3/4" HOLE 15828' Z-46 Current TREE = CNV 4-1/16 SM WELLHEAD = FMC Gen 5 CSG HEAD = 11" 5M W/ 7" MANDREL HANGER 8 PACKOFF TBG SPOOL = 11" X 11" 5M TBG HANGER = 11" X 4-1/2" ADP FLANGE = 11" X 4-1/16" DATE REV BY COMMENTS DATE . REV BY COMMENTS PRUDHOE BAY UNff 10/10/05. STG Original Completion WELL: Z-46 PERMfI' No: 50-029-23280 API No: 205-151 SEC 19, T11 N, R12E, 4297' FSL, 2940' FEL BP 6cploration (Alaska) Z-46A Proposed TREE = CMJ 4-1/16 5M WELLHEAD = FMC Gen 5 CSG HEAD = 11" 5M W/ 7" MANDREL HANGER 8 PACKOFF TBG SPOOL = 11" X 11" 5M TBG HANGER = 11" X 4-1/2" ADP FLANGE = 11" X 4-1/16" 2677' ~~3-1 /2" HES X NIPPLE, ID = 2.813" 4,475' 10-3/4" CSG, 45.5#, L-80 BTGM, ID = 9.950" GAS LIFT MANDRELS ~~~ ;~ -Y.,~` y _~~'_ ..t , y ~ ,, ~ .t TOP 7-518" CSG STUB 4475' ~('-;~, ~F ~=~ , h ~~ ' f HES 7-5/8" ¢SV 4625' ST MD TVD DEV TYPE VLV LATCH PORT DATE 7 3680 2500 60 MMG DMY BK-5 6 5354 3500 36 MMG DCK BK-5 5 6533 4400 36 MMG DMY BK-5 4 7780 5300 36 MMG DMY BK-5 3 8740 6200 36 MMG DMY BK-5 2 9925 7100 37 MMG DMY BK-5 1 11062 8000 44 MMG DMY BK-5 12038' 3-1/2" HES X NIPPLE, ID = 2.813" 11894' 3-1/2" TBG, 9.2#, 13CR-80, Vam Top, 0.0087 bpf, ID = 2.992" 11762' 3-1/2" HES X NIPPLE, ID = 2.813" 11783' HES 3-1/2" SYMPHONY BHG w/ {-WIRE 11837' 7-5/8" x 4-1/2" BAKER S-3 PKR, ID = 3.88" 11883' 3-1/2" HES X NIPPLE, ID = 2.813" HES 7-5/8" ¢SV 15143' ~ 7-5/8" CSG, 29.7#, +' J.:_ ~' ~ '~ ~ - .~ L-80 BTGM, 15293' _ _ _ t "`'`~_*~ ` 0.04591 bpf, ID= ~~ ~: `> ' 6.75" -"r, -~= '' PBTD 15828' ~ ~ -~ 0.01554 bpf, ID = 4.00" PBTD 16409' am Top, 16495' DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 12/15/05 STG Original Completion WELL: Z-46A PERMfr No: API No: 50-029-23280-01 SEC 19, T11 N, R12E, 983' FNL, 2940' FEL BP Exploration (Alaska) 11894' 3-1/2" X 4-1/2" XO 11894' BAKER HMC LINER HANGER, ZXPpkr w/ TBS 12044' 7-5/8" CSG, 29.7#, L-80 BTGM, 0.04591 bpf, ID = 6.75" Minimum ID = 2.813" @ 2677' 3-1/2" HES X NIPPLE PERFORATION SUMMARY REF LOG: ANGLE AT TOP PERF: Note: SIZE by Schlumberger Z-46A (P8) Proposal Report Date: December 15, 2005 Client: BP Exploration Alaska Field: Prudhoe Bay Unit - WOA Structure I Slot: Z-PAD I Z-46 ~~ ~ ~1 Well: Z-46 ApprO Borehole: Plan Z-06A UWIIAPM: 500292328001 Survey Name 1 Date: Z-46A (P8) /December 15, 2005 Tort 1 AHD 1 DDI 1 ERD ratio: 300.106° 112190.88 ft / 6.825 / 1.351 Grid Coordinate System: NAD27 Alaska State Planes, Zone 04, US Feet Location Latilong: N 70.29767977, W 149.19230975 Location Grid NIE YIX: N 5959100.060 ftUS, E 599737.580 ftUS Grid Convergence Angle: +0.76041130° 5 Vertical Section Azimuth: Vertical Section Origin: 145.000° S 0.000 ft, W 0:002 ft ND Reference Datum: Rotary Table ND Reference Elevation: 82.80 ft relative to MSL Sea Bed 1 Ground Level Elevation: 54.40 ft relative to MSL Magnetic Declination: 24.430° Total Field Strength: 57580.683 nT Magnetic Dip: 80.829° Declination Date: December 15, 2005 Magnetic Declination Model: BGGM 2005 North Reference: True North Total Corr Mag North a True North: +24.430° Local Coordinates Referenced To: Well Head Measured Vertical Comments Inclination Azimuth Sub-Sea ND ND NS EW DLS Tool Face Build Rate Walk Rate Northing Easting Latitude Longitude Depth Section ft de de ft ft ft ft ft de 100 ft de de 100 ft de 1100 ft ftUS ftUS na-In purvey •r•rG i. i i bU.oo IOOAO GIIb.44 GaD~.G4 G/bb.b/ -GyU4.bl b/D.3L U./a l //./4li -V.IG -V.a`J b`JDbZU4.`J3 bUU49"L3Z N /U.Zay/44bU VV 1457."laba43/3 4450.00 60.44 166.40 2790.61 2873.41 2790.11 -2929.09 681.24 1.35 177.73G -1.35 0.06 5956180.54 600457.57 N 70.28967764 W 149.18679579 4474.99 60.11 166.41 2803.00 2885.80 2810.32 -2950.18 686.34 1.35 O.OOG -1.35 0.06 5956159.52 600462.95 N 70.28962001 W 149.18675452 9-5/8" Csg Pt 4475.00 60.10 166.41 2803.00 2885.80 2810.32 -2950.19 686.34 1.35 177.80G -1.35 0.06 5956159.51 600462.95 N 70.28961999 W 149.18675450 KOP Crv 4/100 4500.00 59.77 166.43 2815.53 2898.33 2830.47 -2971.22 691.42 1.35 -173.99G -1.35 0.06 5956138.55 600468.31 N 70.28956253 W 149.18671340 4550.00 57.78 166.18 2841.45 2924.25 2870.30 -3012.76 701.55 4.00 -173.87G -3.98 -0.49 5956097.15 600478.98 N 70.28944905 W 149.18663151 4600.00 55.79 165.92 2868.84 2951.64 2909.34 -3053.35 711.63 4.00 -173.73G -3.98 -0.52 5956056.70 600489.60 N 70.28933814 W 149.18654994 4650.00 53.80 165.65 2897.66 2980.46 2947.53 -3092.96 721.66 4.00 -173.57G -3.98 -0.54 5956017.23 600500.15 N 70.28922995 W 149.18646879 4700.00 51.82 165.37 2927.88 3010.68 2984.83 -3131.52 731.62 4.00 -173.40G -3.97 -0.57 5955978.81 600510.63 N 70.28912459 W 149.18638816 4750.00 49.83 165.07 2959.46 3042.26 3021.20 -3169.00 741.51 4.00 -173.21 G -3.97 -0.60 5955941.47 600521.01 N 70.28902221 W 149.18630816 4800.00 47.84 164.75 2992.37 3075.17 3056.59 -3205.34 751.31 4.00 -173.OOG -3.97 -0.64 5955905.27 600531.29 N 70.28892292 W 149.18622887 UG4 4847.75 45.95 164.42 3025.00 3107.80 3089.44 -3238.94 760.58 4.00 -172.78G -3.97 -0.68 5955871.79 600541.00 N 70.28883111 W 149.186153 4850.00 45.86 164.41 3026.57 3109.37 3090.96 -3240.50 761.01 4.00 -172.76G -3.97 -0.70 5955870.24 600541.46 N 70.28882686 W 149.18615 4900.00 43.88 164.04 3062.00 3144.80 3124.27 -3274.45 770.60 4.00 -172.51G -3.97 -0.73 5955836.43 600551.49 N 70.28873412 W 149.18607 UG4A 4924.77 42.89 163.85 3080.00 3162.80 3140.36 -3290.79 775.30 4.00 -172.37G -3.97 -0.77 5955820.14 600556.41 N 70.28868946 W 149.18603478 4950.00 41.89 163.65 3098.64 3181.44 3156.47 -3307.13 780.06 4.00 -172.22G -3.96 -0.80 5955803.87 600561.39 N 70.28864483 W 149.18599627 5000.00 39.91 163.23 3136.42 3219.22 3187.52 -3338.51 789.39 4.00 -171.90G -3.96 -0.84 5955772.62 600571.13 N 70.28855910 W 149.18592080 5050.00 37.93 162.77 3175.32 3258.12 3217.40 -3368.55 798.57 4.00 -171.55G -3.96 -0.92 5955742.71 600580.71 N 70.28847703 W 149.18584653 End Crv 5090.83 36.32 162.37 3207.88 3290.68 3240.89 -3392.06 805.95 4.00 O.OOG -3.95 -0.99 5955719.30 600588.40 N 70.28841279 W 149.18578681 UG3 5354.10 36.32 162.37 3420.00 3502.80 3389.71 -3540.67 853.18 0.00 O.OOG 0.00 0.00 5955571.35 600637.59 N 70.28800680 W 149.18540468 UG1 5993.27 36.32 162.37 3935.00 4017.80 3751.02 -3901.45 967.85 0.00 O.OOG 0.00 0.00 5955212.15 600757.03 N 70.28702113 W 149.18447698 Ma 6328.37 36.32 162.37 4205.00 4287.80 3940.44 -4090.60 1027.97 0.00 O.OOG 0.00 0.00 5955023.84 600819.65 N 70.28650437 W 149.18399065 Mbl 6390.42 36.32 162.37 4255.00 4337.80 3975.52 -4125.62 1039.11 0.00 O.OOG 0.00 0.00 5954988.96 600831.25 N 70.28640868 W 149.18390059 Mb2 6446.27 36.32 162.37 4300.00 4382.80 4007.09 -4157.15 1049.13 0.00 O.OOG 0.00 0.00 5954957.58 600841.68 N 70.28632255 W 149.18381953 Mc 6533.15 36.32 162.37 4370.00 4452.80 4056.20 -4206.19 1064.71 0.00 O.OOG 0.00 0.00 5954908.75 600857.92 N 70.28618857 W 149.18369345 WeIlDesign Ver SP 1.0 Bld( doc40x_56) Z-46\Z-46\Plan Z-46A\Z-46A (P8) Generated 12/15/2005 11:45 AM Page 1 of 4 Measured Vertical Comments Inclination Azimuth Subsea ND ND NS EW DLS Tool Face Build Rate Walk Rate Northing Easting Latitude Longitude Depth Section ft de de ft ft ft ft ft de 1100 ft de de 100 ft de 1100 ft ftUS ftUS Na 6657.26 36.32 162.37 4470.00 4552.80 4126.36 -4276.24 1086.98 0.00 O.OOG 0.00 0.00 5954839.01 600881.11 N 70.28599718 W 149.18351334 Nb 6688.29 36.32 162.37 4495.00 4577.80 4143.90 -4293.76 1092.54 0.00 O.OOG 0.00 0.00 5954821.57 600886.91 N 70.28594933 W 149.18346832 OA 6899.28 36.32 162.37 4665.00 4747.80 4263.16 -4412.85 1130.40 0.00 O.OOG 0.00 0.00 5954703.00 600926.33 N 70.28562396 W 149.18316214 OBa 6979.95 36.32 162.37 4730.00 4812.80 4308.77 -4458.38 1144.87 0.00 O.OOG 0.00 0.00 5954657.67 600941.41 N 70.28549956 W 149.18304507 OBd 7153.71 36.32 162.37 4870.00 4952.80 4406.99 -4556.46 1176.04 0.00 O.OOG 0.00 0.00 5954560.02 600973.88 N 70.28523160 W 149.18279293 OBf 7265.41 36.32 162.37 4960.00 5042.80 4470.13 -4619.51 1196.08 0.00 O.OOG 0.00 0.00 5954497.25 600994.75 N 70.28505935 W 149.18263085 OBfBase 7315.05 36.32 162.37 5000.00 5082.80 4498.19 -4647.53 1204.99 0.00 O.OOG 0.00 0.00 5954469.35 601004.03 N 70.28498279 W 149.18255881 CM2 7786.67 36.32 162.37 5380.00 5462.80 4764.79 -4913.74 1289.60 0.00 O.OOG 0.00 0.00 5954204.31 601092.16 N 70.28425549 W 149.18187449 Fault Crossing 8568.57 36.32 162.37 6010.00 6092.80 5206.78 -5355.09 1429.88 0.00 O.OOG 0.00 0.00 5953764.90 601238.27 N 70.28304970 W 149.18074005 CM1 8680.27 36.32 162.37 6100.00 6182.80 5269.92 -5418.14 1449.92 0.00 O.OOG 0.00 0.00 5953702.13 601259.14 N 70.28287744 W 149.18057800 THRZ 9251.18 36.32 162.37 6560.00 6642.80 5592.64 -5740.39 1552.34 0.00 O.OOG 0.00 0.00 5953381.30 601365.82 N 70.28199702 W 149.17974 K1 9586.28 36.32 162.37 6830.00 6912.80 5782.06 -5929.54 1612.46 0.00 O.OOG 0.00 0.00 5953192.98 601428.44 N 70.28148024 W 149.179263 TKC4 9623.51 36.32 162.37 6860.00 6942.80 5803.11 -5950.55 1619.14 0.00 O.OOG 0.00 0.00 5953172.06 601435.40 N 70.28142282 W 149.17920968 Crv 41100 9665.24 36.32 162.37 6893.62 6976.42 5826.70 -5974.11 1626.63 0.00 -91.14G 0.00 0.00 5953148.61 601443.20 N 70.28135847 W 149.17914916 LCU / TMLV 9673.15 36.31 161.83 6900.00 6982.80 5831.18 -5978.57 1628.07 4.00 -90.71 G -0.06 -6.75 5953144.17 601444.70 N 70.28134628 W 149.17913750 9700.00 36.31 160.02 6921.63 7004.43 5846.47 -5993.59 1633.27 4.00 -89.24G 0.00 -6.75 5953129.21 601450.09 N 70.28130523 W 149.17909550 9750.00 36.39 156.65 6961.91 7044.71 5875.30 -6021.13 1644.21 4.00 -86.53G 0.15 -6.74 5953101.83 601461.39 N 70.28123001 W 149.17900704 9800.00 36.56 153.29 7002.12 7084.92 5904.56 -6048.05 1656.78 4.00 -83.83G 0.34 -6.71 5953075.08 601474.32 N 70.28115646 W 149.17890538 9850.00 36.82 149.98 7042.22 7125.02 5934.22 -6074.32 1670.97 4.00 -81.17G 0.52 -6.64 5953049.00 601488.85 N 70.28108466 W 149.17879062 9900.00 37.17 146.70 7082.16 7164.96 5964.25 -6099.92 1686.76 4.00 -78.56G 0.70 -6.54 5953023.61 601504.98 N 70.28101472 W 149.17866292 9950.00 37.61 143.49 7121.89 7204.69 5994.60 -6124.81 1704.13 4.00 -76.OOG 0.88 -6.43 5952998.96 601522.68 N 70.28094671 W 149.17852242 10000.00 38.14 140.35 7161.36 7244.16 6025.24 -6148.96 1723.06 4.00 -73.52G 1.05 -6.29 5952975.06 601541.93 N 70.28088072 W 149.17836930 10050.00 38.74 137.28 7200.53 7283.33 6056.14 -6172.35 1743.53 4.00 -71.12G 1.22 -6.13 5952951.95 601562.70 N 70.28081682 W 149.17820375 10100.00 39.43 134.30 7239.34 7322.14 6087.25 -6194.93 1765.51 4.00 -68.81 G 1.37 -5.96 5952929.66 601584.98 N 70.28075510 W 149.17802596 10150.00 40.19 131.41 7277.75 7360.55 6118.53 -6216.70 1788.97 4.00 -66.59G 1.52 -5.78 5952908.21 601608.73 N 70.28069564 W 149.17783616 10200.00 41.02 128.61 7315.72 7398.52 6149.96 -6237.61 1813.89 4.00 -64.46G 1.66 -5.59 5952887.64 601633.92 N 70.28063849 W 149.17763457 10250.00 41.91 125.91 7353.19 7435.99 6181.48 -6257.64 1840.24 4.00 -62.44G 1.79 -5.40 5952867.95 601660.53 N 70.28058374 W 149.17742144 Fault Crossing 10279.44 42.47 124.37 7375.00 7457.80 6200.08 -6269.02 1856.41 4.00 -61.29G 1.89 -5.25 5952856.79 601676.85 N 70.28055264 W 149.17729067 TKNGAK 10299.84 42.86 123.31 7390.00 7472.80 6212.97 -6276.72 1867.89 4.00 -60.52G 1.95 -5.16 5952849.25 601688.43 N 70.28053161 W 149.17719778 10300.00 42.87 123.30 7390.12 7472.92 6213.07 -6276.78 1867.98 4.00 -60.51 G 1.97 -5.12 5952849.19 601688.52 N 70.28053144 W 149.17719 TJG 10341.04 43.69 121.24 7420.00 7502.80 6239.02 -6291.80 1891.78 4.00 -59.01 G 2.01 -5.04 5952834.49 601712.51 N 70.28049040 W 149.1770045 End Crv 10343.78 43.75 121.10 7421.98 7504.78 6240.75 -6292.78 1893.40 4.00 O.OOG 2.06 -4.96 5952833.53 601714.14 N 70.28048772 W 149.17699148 TJF 10832.48 43.75 121.10 7775.00 7857.80 6549.72 -6467.34 2182.76 0.00 O.OOG 0.00 0.00 5952662.85 602005.78 N 70.28001062 W 149.17465080 TJE 11060.90 43.75 121.10 7940.00 8022.80 6694.12 -6548.92 2318.01 0.00 O.OOG 0.00 0.00 5952583.07 602142.09 N 70.27978762 W 149.17355680 TJD 11406.99 43.75 121.10 8190.00 8272.80 6912.93 -6672.54 2522.94 0.00 O.OOG 0.00 0.00 5952462.19 602348.61 N 70.27944972 W 149.17189929 TJC 11711.54 43.75 121.10 8410.00 8492.80 7105.47 -6781.33 2703.27 0.00 O.OOG 0.00 0.00 5952355.82 602530.36 N 70.27915236 W 149.17044072 TJB 11849.98 43.75 121.10 8510.00 8592.80 7192.99 -6830.77 2785.24 0.00 O.OOG 0.00 0.00 5952307.47 602612.97 N 70.27901720 W 149.16977774 TJA 11933.04 43.75 121.10 8570.00 8652.80 7245.51 -6860.44 2834.42 0.00 O.OOG 0.00 0.00 5952278.46 602662.54 N 70.27893609 W 149.16937996 TSAG 12043.77 43.75 121.10 8649.99 8732.79 7315.51 -6900.00 2899.99 0.00 O.OOG 0.00 0.00 5952239.78 602728.62 N 70.27882797 W 149.16884966 12043.78 43.75 121.10 8650.00 8732.80 7315.52 -6900.00 2900.00 0.00 O.OOG 0.00 0.00 5952239.78 602728.63 N 70.27882796 W 149.16884960 7" Csg Pt 12043.80 43.75 121.10 8650.01 8732.81 7315.53 -6900.00 2900.01 0.00 O.OOG 0.00 0.00 5952239.77 602728.63 N 70.27882794 W 149.16884953 WeIlDesign Ver SP 1.0 Bld( docAOx_56) Z-4612-46\Plan Z-46A\Z-46A (P8) Generated 12/15/2005 11:45 AM Page 2 of 4 Measured Vertical Comments Inclination Azimuth Sub-Sea ND ND NS EW DLS Tool Face Build Rate Walk Rate Northing Easting Latitude Longitude Depth Section ft de de ft k ft ft ft de 100 ft de d 100 ft de 100 ft ftUS ftUS crv"Ib/"IUU IZUb3./ss 4s./b lrl.'IU i5664.4b is/4/.Z5 /JZS.1/ -6yU/.74 Yy'19.254 U.UU -/.1/(i U.UU U.UU byb"L"LSL./y 6UL/4U.bli N /U.L/SSUS43 W 94y.96t3/538L TSHU 12064.55 43.86 121.08 8665.00 8747.80 7328.65 -6907.42 2912.30 15.00 -7.25G 14.88 -2.74 5952232.52 602741.02 N 70.27880768 W 149.16875015 12100.00 49.14 120.19 8689.39 8772.19 7352.06 -6920.51 2934.42 15.00 -6.64G 14.89 -2.50 5952219.73 602763.31 N 70.27877189 W 149.16857122 12150.00 56.60 119.16 8719.55 8802.35 7388.06 -6940.21 2969.04 15.00 -6.02G 14.91 -2.07 5952200.49 602798.18 N 70.27871802 W 149.16829123 12200.00 64.06 118.28 8744.29 8827.09 7426.98 -6961.07 3007.12 15.00 -5.58G 14.92 -1.74 5952180.14 602836.53 N 70.27866102 W 149.16798326 TEIL 12240.35 70.08 117.66 8760.00 8842.80 7460.07 -6978.48 3039.92 15.00 -5.34G 14.93 -1.55 5952163.16 602869.56 N 70.27861339 W 149.16771792 12250.00 71.53 117.52 8763.17 8845.97 7468.16 -6982.70 3048.00 15.00 -5.29G 14.94 -1.47 5952159.05 602877.70 N 70.27860186 W 149.16765260 12300.00 78.99 116.82 8775.89 8858.69 7510.89 -7004.76 3090.99 15.00 -5.11G 14.94 -1.41 5952137.57 602920.97 N 70.27854155 W 149.16730488 End Crv 12348.65 86.26 116.17 8782.12 8864.92 7553.26 -7026.27 3134.15 15.00 O.OOG 14.94 -1.34 5952116.64 602964.41 N 70.27848275 W 149.16695582 Crv 10/100 12383.26 86.26 116.17 8784.38 8867.18 7583.51 -7041.50 3165.14 0.00 -89.20G 0.00 0.00 5952101.83 602995.60 N 70.27844111 W 149.16670515 12400.00 86.29 114.49 8785.47 8868.27 7598.02 -7048.64 3180.24 10.00 -89.09G 0.15 -10.02 5952094.88 603010.79 N 70.27842157 W 149.166583 12450.00 86.38 109.48 8788.66 8871.46 7639.85 -7067.31 3226.50 10.00 -88.77G 0.19 -10.02 5952076.83 603057.28 N 70.27837051 W 149.16620>~ 12500.00 86.50 104.47 8791.77 8874.57 7679.15 -7081.88 3274.21 10.00 -88.46G 0.24 -10.02 5952062.90 603105.18 N 70.27833066 W 149.165822 12550.00 86.65 99.46 8794.75 8877.55 7715.62 -7092.22 3323.02 10.00 -88.16G 0.30 -10.01 5952053.20 603154.12 N 70.27830234 W 149.16542817 12600.00 86.83 94.46 8797.60 8880.40 7748.98 -7098.27 3372.56 10.00 -87.87G 0.35 -10.01 5952047.81 603203.73 N 70.27828576 W 149.16502748 Tgt 1 /Crv 10/100 12644.55 57.00 90.00 8800.00 8882.80 7775.89 -7100.00 3417.00 10.00 -148.41G 0.39 -10.01 5952046.67 603248.19 N 70.27828098 W 149.16466796 TSAD 12644.75 86.98 89.99 8800.01 8882.81 7776.00 -7100.00 3417.19 10.00 -148.41G -8.52 -5.25 5952046.68 603248.38 N 70.27828098 W 149.16466640 12650.00 86.54 89.71 8800.31 8883.11 7779.00 -7099.99 3422.44 10.00 -148.40G -8.52 -5.25 5952046.76 603253.62 N 70.27828101 W 149.16462397 12700.00 82.28 87.07 8805.18 8887.98 7806.38 -7098.60 3472.17 10.00 -148.14G -8.51 -5.28 5952048.81 603303.32 N 70.27828475 W 149.16422170 12750.00 78.05 84.38 8813.72 8896.52 7831.55 -7094.93 3521.28 10.00 -147.68G -8.47 -5.39 5952053.12 603352.38 N 70.27829470 W 149.16382439 12800.00 73.84 81.60 8825.86 8908.66 7854.31 -7089.02 3569.40 10.00 -147.OOG -8.42 -5.56 5952059.67 603400.42 N 70.27831078 W 149.16343506 12850.00 69.66 78.69 8841.52 8924.32 7874.50 -7080.91 3616.17 10.00 -146.09G -8.35 -5.80 5952068.40 603447.07 N 70.27833288 W 149.16305668 End Crv 12863.07 68.58 77.91 8846.18 8928.98 7879.33 -7078.44 3628.13 10.00 O.OOG -8.29 -5.99 5952071.03 603458.99 N 70.27833962 W 149.16295997 Crv 8/100 12908.28 68.58 77.91 8862.69 8945.49 7895.71 -7069.62 3669.29 0.00 -32.43G 0.00 0.00 5952080.39 603500.03 N 70.27836365 W 149.16262697 12950.00 71.41 76.02 8876.96 8959.76 7910.37 -7060.78 3707.47 8.00 -31.79G 6.78 -4.52 5952089.74 603538.08 N 70.27838776 W 149.16231805 13000.00 74.82 73.84 8891.49 8974.29 7926.67 -7048.33 3753.66 8.00 -31.15G 6.82 -4.36 5952102.80 603584.10 N 70.27842169 W 149.16194437 42P 13035.26 77.24 72.35 8900.00 8982.80 7937.29 -7038.38 3786.40 8.00 -30.79G 6.86 -4.24 5952113.18 603616.70 N 70.27844884 W 149.16167949 13050.00 78.25 71.73 8903.13 8985.93 7941.51 -7033.94 3800.09 8.00 -30.66G 6.88 -4.18 5952117.80 603630.33 N 70.27846095 W 149.16156867 13100.00 81.70 69.67 8911.83 8994.63 7954.83 -7017.67 3846.55 8.00 -30.30G 6.90 -4.12 5952134.69 603676.57 N 70.27850535 W 149.16119278 13150.00 85.16 67.64 8917.55 9000.35 7966.55 -6999.59 3892.81 8.00 -30.07G 6.92 -4.05 5952153.38 603722.58 N 70.27855467 W 149.16081 Z-46A Tgt 2 13191.03 88.00 66.00 8920.00 9002.80 7974.94 -6983.47 .3930.45 8.00 -81.42G 6.93 -4.01 5952170.00 603760.00 N 70.27859865 W 149.16051 13200.00 88.11 65.29 8920.30 9003.10 7976.59 -6979.77 3938.62 8.00 -81.40G 1.19 -7.91 5952173.80 603768.12 N 70.27860874 W 149.160447 End Crv 13227.08 88.43 63.15 8921.12 9003.92 7980.93 -6968.00 3962.99 8.00 O.OOG 1.20 -7.91 5952185.90 603792.33 N 70.27864087 W 149.16025062 Crv 8/100 13877.91 88.43 63.15 8938.93 9021.73 8073.13 -6674.13 4543.43 0.00 75.58G 0.00 0.00 5952487.42 604368.76 N 70.27944281 W 149.15555370 13900.00 88.87 64.86 8939.45 9022.25 8076.58 -6664.45 4563.27 8.00 75.54G 2.00 7.75 5952497.36 604388.47 N 70.27946922 W 149.15539310 13950.00 89.87 68.73 8939.99 9022.79 8086.80 -6644.75 4609.21 8.00 75.50G 2.00 7.75 5952517.66 604434.15 N 70.27952295 W 149.15502133 Z-46A Tgt 3 13956.31 90.00 69.22 8940.00 9022.80 8088.32 -6642.49 4615.10 8.00 -90.OOG 2.00 7.75 5952520.00 604440.00 N 70.27952912 W 149.15497370 End Crv 13956.32 90.00 69.22 8940.00 9022.80 8088.33 -6642.49 4615.11 8.00 O.OOG 0.00 -8.00 5952520.01 604440.01 N 70.27952914 W 149.15497359 Crv 8/100 14364.86 90.00 69.22 8940.00 9022.80 8188.68 -6497.53 4997.08 0.00 90.OOG 0.00 0.00 5952670.00 604$19.99 N 70.27992446 W 149.15188275 Z-46A Tgt 4 14364.88 90.00 69.22 8940.00 9022.80 8188.68 -6497.53 4997.09 8.00 75.17G 0.00 8.00 5952670.00 604820.00 N 70.27992448 W 149.15188264 14400.00 90.72 71.94 8939.78 9022.58 8198.11 -6485.85 5030.21 8.00 75.19G 2.05 7.73 5952682.12 604852.96 N 70.27995632 W 149.15161463 14450.00 91.74 75.81 8938.71 9021.51 8214.27 -6471.97 5078.22 8.00 75.27G 2.04 7.74 5952696.64 604900.78 N 70.27999417 W 149.15122614 WeIlDesign Ver SP 1.0 Bld(doc40x_56) Z-46\2-46\Plan Z-46A\Z-46A (P8) Generated 12/15/2005 11:45 AM Page 3 of 4 Measured Vertical Comments inclinatwn Azimuth Subsea ND ND NS EW DLS Tool Face Build Rate Walk Rate Northing Easting Latitude Longitude Depth Section ft de de ft ft ft ft ft de 100 ft de de 1100 ft de 100 ft ftUS ftUS I4bUU.VV yL./~ /a.ba 25`J3b./b `JUl`J.bb LSG33.525 -b4bl.3b 5lL/.US iS.UU /5.4L1i L.UL /./5 SybL/U/.iSy bU4y4y.44 N /U.Lt5UUL3Ub W I4y.I bUif3l ltd 14550.00 93.75 83.56 8933.91 9016.71 8255.94 -6454.08 5176.41 8.00 75.64G 2.00 7.76 5952715.82 604998.71 N 70.28004284 W 149.15043168 14600.00 94.73 87.45 8930.21 9013.01 8281.25 -6450.17 5226.11 8.00 75.93G 1.97 7.78 5952720.39 605048.35 N 70.28005343 W 149.15002958 14650.00 95.69 91.34 8925.66 9008.46 8309.37 -6449.65 5275.89 8.00 76.28G 1.92 7.80 5952721.58 605098.11 N 70.28005478 W 149.14962685 14700.00 96.63 95.26 8920.29 9003.09 8340.17 -6452.51 5325.51 8.00 76.70G 1.87 7.82 5952719.38 605147.76 N 70.28004687 W 149.14922545 End Crv 14730.91 97.19 97.68 8916.57 8999.37 8360.49 -6455.96 5355.99 8.00 O.OOG 1.82 7.85 5952716.33 605178.29 N 70.28003737 W 149.14897883 Crv 8/100 14986.44 97.19 97.68 8884.58 8967.38 8532.36 -6489.85 5607.24 0.00 -170.31G 0.00 0.00 5952685.78 605429.94 N 70.27994428 W 149.14694638 15000.00 96.12 97.50 8883.01 8965.81 8541.47 -6491.63 5620.59 8.00 -170.33G -7.89 -1.35 5952684.18 605443.31 N 70.27993940 W 149.14683842 Z-46A Tgt 5 15037.06 93.20 97.00 8880.00 8962.80 8566.30 -6496.29 5657.23 8.00 -170.64G -7.89 -1.34 5952680.00 605480.01 N 70.27992659 W 149.14654203 15050.00 92.18 96.83 8879.39 8962.19 8574,94 -6497.85 5670.06 8.00 -170.64G -7.89 -1.30 5952678.62 605492.85 N 70.27992231 W 149.14643824 End Crv 15062.90 91.16 96.66 8879.02 8961.82 8583,52 -6499.36 5682.86 8.00 O.OOG -7.89 -1.30 5952677.27 605505.67 N 70.27991815 W 149.146334 TD / 4-1/2" Lnr 16495.24 91.16 96.66 8850.00 8932.80 9535.49 -6665.54 7105.24 0.00 O.OOG 0.00 0.00 5952530.00 606930.00 N 70.27946086 W 149.13482 Legal Description: Northi ng (Y) [ftUS] Eastin g (X) [ftUS] Surface : 4296 FSL 2940 FEL S19 T11N R12E UM 5959100,06 599737.58 Tgt 1 : 2475 FSL 4831 FEL S29 T11N R12E UM 5952046.67 603248.19 TD / BHL : 2907 FSL 1141 FEL S29 T11 N R12E UM 5952530.00 606930.00 • WeIlDesign Ver SP 1.0 Bld( doc40x_56) Z-46\Z-46\Plan Z-46A\Z-46A (P8) Generated 12/15/2005 11:45 AM Page 4 of 4 by • • Scld~anberger WELL FIE ID STRUCTURE Z-46A (P8) Prudhoe Bay Unit - WOA Z-PAD Magmuic Paramelen 9u,lau Lou,lon NA03] Nxha Slale Planes. Inns W. US Feel Al~acellareoua MoEel BGGh13M5 Dip ~; 039" p Dale Oecemper l5. 2005 Lal NIO t]510d] NenM1irq 5959+00 OB IIUS C+q Cwv .O.)600!t l0' Sbl I-!6 P:D Re! Rgary Ta01e 183.800 a0ove hlSLl hlay Deg: 2d IJO' FS 5]500 ]nT Lon: Wtd9ll ]21+5 EasM1!g. 599]J]58 M15 Sub Faq. 0.9999tt 300] PNn Zs0A IP9'1 Srvy Dale. Decemper t5. 2005 3000 4000 5000 6000 7000 3000 4000 5000 x o` 0 0 c ~ 6000 U H 7000 8000 l70 9000 3000 4000 5000 6000 7000 Vertical Section (ft) Azim = 145°, Scale = 1(in):1000(ft) Origin = -0.000380838 N/-S, -0.00241787 E/-V by Schlumberger WELL Z-46A (P8) FIELD Prudhoe Bay Unit - WOA STRUCTURE Z-PAD Magwbc Pxamelws Sullx» L°cawn NAD2/ Naska Slate Plsws. Zone U<. US Feel Miuelbnepus MoUel. SGGM 1005 Dip. 60.839' Dale. p. mbar 15. 2005 lal: N/O t151 W) NonNOg. S9S9100 M1US Grq CUnv.-0.]Wi1130' SbL. 2Jfi ND ReI oldry Tabb (83 BOM1above MSLi M1lag Unc. .2J 630' FS. 5I5601nT Lon. Wta91t J23t5 Easwg 55913/56 nUS Scale Fad099991r31N1J Plan Z-ifiA lPfi) Srvy Dale December 15. 3005 8000 °0 8500 to C O) U ~ 9000 ca~nn 2000 2500 3000 3500 4000 4500 5000 5500 6000 6 :............ ...................................;..................................;..................................;.....................................................................7..................................;.................................. ~..................................;...... 6A (P6) .........,,..,.....i..,...«.......,...,.,,.,...,..»~.i.. .............,...,.......,e..,...,...................,...,....i.«...~..,...,...r...,...,.......i...,.«,...,..............,....,.,b...,.......,......«...,...,...,.,i,...,. 7" Chg Pt CN 15/100 _ * •t nd Crv Tgt 1l Crv 1DN00 -••}• - - - - -•~-• - - - - - - - -~.- - ~..-..~., _,.- -., _.. Crv 10/100 ~ Z46A Tg~5 ..._.._.._.._ .. _.. ..-.._.. _.. .._.._.._.._.._.._.._.._.._.._.._.._.._.._.._.._.._.._.._.._.._.._.._.._.._.._.._.._.._.._.._.._.._.. _.. _.. _.. _.._.._. _.._.._.._.._.._.._..-..~..-..-..-..-..-..-..-..-.t-..-..-..-.._.._.._.._.._.. _.._ End Crv Z~6A Tgl ~ 2~6A Tgt 3 : Crv 8/100 End Crv Crv 61700 Crv 61100 Z46A Tgt 4End Crv Crv 61700: rv TD 6 1 Z :. End Crv End C ..-.._.._.._.._.. - - - . .-. -..-. -..-..-..-.. .-..-..-..-..-.._.._ nr ~ .. 6) .. ~ .-.._.._.._.._.._.._.._..~.._.._.._.._.._.._..-..-.:_..-..-..-..-..-..-..-.._:. 46A P 2000 2500 3000 3500 4000 4500 5000 5500 6000 6! Vertical Section (ft) Azim = 85°, Scale = 1(in):500(ft) Origin = 0 N/-S, 0 E/-V i 8000 8500 9000 ~~~~ i by Schlumberger 0 0 0 c -5000 a~ m U V V V Tv.-'~ ,r V~ HELD f,a Prudhoe Bay Unit - WOq STRUDILRE Z-PAD BGGM 3005 Dip. BO.Sn' Surlau LxalAm Mag Dec aZ<690' Dale. Dewmpn 15. 2005 Laf. NAD2I gfavAa Sulu Pbnns. Zone 6: FS. 5T5BO.I nT Len. N]01I51 fib! Norlfx 'US Feet MaielWriaous W1A91t 313f5 ~ S959t00.OB flUS GriE Cum b/OOit f30° Eas~n9 59913158 f1US Scak Fad. 09959tt1003 Pb~ Z-ffi tan Z-08q (p8) 1000 2000 3000 4000 k-ae 5000 ~,,,.,. TVD Rnl: RIXyy Tapb ~8Z.80 A abpVe MSLf Sfvy Dale December l5. ]005 7000 3000 4000 5000 6000 `« W Scale = 1(in):1000(ft) E »> 7000 Z-46/Plan Z-46A • - -- C --- _ _- __- W38 (W-38) W38 (W-38A) Z-16 (Z-16) Z-17 (Z-17) - zas iz-is) - Z-46 (Z-46) - - Plan Z-46A -4 • • Oilfield Services, Alaska Schlumberger Drilling & Measurements 2525 Gambell, Suite 400 Anchorage, AK 99503 Tel (907) 273-1766 Fax (907) 561-8367 Thursday, December 15, 2005 Shane Gagliardi BP Exploration Alaska Schlumberger Prudhoe Bay Z-46A (P8) Nabors 7ES Close Approach Analysis We have examined the potential intersections of subject well with all other potentially conflicting wells, according to the BPA Directional Survey handbook (BPA-D-004) dated 09/99. Method of analysis: 1. A list of wells to be analyzed is created in Compass by performing a global scan with an initial search radius of two thousand feet with an increment of one hundred feet for every one thousand feet of measured depth in the subject well. 2. Wells are analyzed using the Compass Anti-collision module (BP Company setup) with major risk safety factors applied. For problem wells that are plugged and abandoned or that can be shut in, risk-based safety factor may be used, with client notification. 3. All depths are relative to the planned well profile. Survey Proaram: Instrument Type Start Depth End Depth GYD GC SS 97.00'md 347.00'md MWD +IFR + MS 463.09'md 4421.11'md MWD +IFR + MS 4,421.11'md 16,495.24'md Close Approach Analysis results: Under method (2), all wells may flow. All data documenting these procedures is available for inspection at the Drilling & Measurements Directional Planning Center. Checked by: Scott Del_app 12/15/05 BP Anticollision Report Company: BP Amoco Field: .Prudhoe Bay Keference Site: PB Z Pad Reference Well: Z-46 Reference Wellpath: Plan Z-46A NO GLOBAL SCAN: Using user defined selection & scan criteria Interpolation Method: MD + Stations Interval: 10.00 ft Depth Range: 4500.00 to 16495.24 ft Maximum Radius: 10000.00 ft Survey Program for Definitive Wellpath ', Date: 12/14/2005 Validated: No Planned Erom To Survey ft ft 97.00 347.00 Survey #1 GYD GC SS (97.00-347 463.09 4421.11 Survey #2 MWD+IFR+MS (463.09-1 ' 4421.11 16495.24 Planned: Plan #8-2 V1 .Date: 12/15/2005 Time: 11:59:45 PaKe: I Co-ordinate(NE) Reference: Well: Z-46, True North Vertical ('fVD) Reference: Z-46 82.8 Ub: Oracle Reference: Principal Plan & PLANNED PROGRAM ~~~ Error Model: ISCWSA Ellipse Scan Method: Trav Cylinder North ~~~ Error Surface: Ellipse + Casing Version: 8 Toolcode Tool Name GYD-GC-SS Gyrodata gyro single shots 'i MWD+IFR+MS MWD +IFR + Multi Station MWD+IFR+MS MWD +IFR + Multi Station Casing Points ~- _ _ - - MD "CVD f)iameter Hole Size Name h >ft in in 4475.00 2885.81 9.625 12.250 9 5/8" ', 12043.78 8732.80 8.000 8.750 7" 16495.24 8932.80 4.500 6.125 4 1 /2" - __. Summary <------------------- Offset Wellpath ------ -------> Site Nell Wellpath ' PB W Pad W-38 W-38 V2 ' PB W Pad W-38 W-38A V10 PB Z Pad - Expansiori~lan Ivi Z-40 Plan Z-40 V1 Plan: Pla PB Z Pad - Expansiori8lan Ivi Z-41 Plan Z-41 V1 Plan: Pla PB Z Pad - Expansiori8lan Ivi Z-42 Plan Z-42 V1 Plan: Pla i PB Z Pad - ExpansiorPlan Ivi Z-44 Plan Z-44 V1 Plan: Pla ', PB Z Pad - Expansiori~lan Ivi Z-55 Plan Z-55 V1 Plan: Pla PB Z Pad - Expansiorl8lan Ivi Z-57 Plan Z-57 V1 Plan: Pla PB Z Pad - ExpansiorPlan Ivi Z-60 Plan Z-60 V1 Plan: Pla ', PB Z Pad - ExpansiorPlan Ivi Z-61 Plan Z-61 V1 Plan: Pla I~ PB Z Pad - ExpansiorPlan Ivi Z-63 Plan Z-63 V1 Plan: Pla PB Z Pad - Expansiori~lan Kup Z-105 Plan Z-105 V1 Plan: PI ' PB Z Pad - Expansior181an Kup Z-106 Plan Z-106 V1 Plan: PI PB Z Pad - Expansior181an Kup Z-113 Plan Z-113 V1 Pfan: PI PB Z Pad - Expansiori~lan Kup Z-115 Plan Z-115 V1 Plan: PI PB Z Pad - Expansiorl8lan Sch Z-219 Plan Z-219 V1 Plan: PI PB Z Pad - Expansiorl'lan Sch Z-220 Plan Z-220 V1 Plan: PI PB Z Pad - ExpansiorPlan Sch Z-221 Plan Z-221 V1 Plan: PI PB Z Pad - ExpansiorPlan Sch Z-307 Plan Z-307 V1 Plan: PI PB Z Pad - Expansio~Plan Sch Z-308 Plan Z-308 V1 Plan: PI ~, PB Z Pad - ExpansiorPlan Sch Z-309 Plan Z-309 V1 Plan: PI ' PB Z Pad - Expansiori~lan Sch Z-310 Plan Z-310 V1 Plan: PI PB Z Pad - Expansiori8lan Sch Z-311 Plan Z-311 V1 Plan: PI PB Z Pad - ExpansiorPlan Sch Z-312 Plan Z-312 V1 Plan: PI PB Z Pad - ExpansiorPlan Sch Z-314 Plan Z-314 V1 Plan: PI PB Z Pad - ExpansiorPlan Sch Z-322 Plan Z-322 V1 Plan: PI PB Z Pad - ExpansiorPlan Sch Z-H207 Plan Z-H207 V1 Plan: P PB Z Pad Plan Z-102 Plan Z-102 V2 Plan: PI PB Z Pad Plan Z-104 Plan Z-104 V1 Plan: PI PB Z Pad Plan Z-108 Plan Z-108 V2 Plan: PI PB Z Pad Plan Z-109 Plan Z-109 V1 Plan: PI PB Z Pad Pfan Z-110 Plan Z-110 V1 Plan: PI '',' PB Z Pad Plan Z-111 Plan Z-111 V1 Plan: PI PB Z Pad Plan Z-112 Plan Z-112 V1 Plan: PI PB Z Pad Plan Z-114 Plan Z-114 V1 Plan: PI PB Z Pad Z-01 Z-01 V1 PB Z Pad Z-02 Plan Z-02B V2 Plan: PI PB Z Pad Z-02 Z-02 V3 PB Z Pad Z-02 Z-02A V1 PB Z Pad Z-03 Z-03 V4 PB Z Pad Z-04 Z-04 V6 Reference Offset MD MD ft ft 16399.48 13590.00 16395.54 16470.00 16400.20 11820.00 5097.44 5100.00 5645.21 7090.00 14309.36 13620.00 5512.85 6150.00 Ctr-Ctr No-Go Allowable Distance Area Deviation ft--- ft ft 2152.03 297.81 1854.22 818.78 282.64 536.14 2635.37 175.70 2459.68 1925.67 107.26 1818.41 5622.22 88.64 5533.57 734.44 135.47 598.97 4205.46 65.14 4140.33 W'arninK / 5488.19 6300.00 4504.65 103.67 4400.97 5515.44 7060.00 5435.38 126.54 5308.84 5266.09 5160.00 2616.07 92.17 2523.90 5698.49 5780.00 1704.56 68.52 1636.04 5644.98 6930.00 5378.47 60.69 5317.78 5240.73 5270.00 2601.24 87.09 2514.14 5470.90 6330.00 4613.86 93.61 4520.24 5335.99 5730.00 3101.40 86.40 3015.00 5406.97 5880.00 3610.56 79.91 3530.65 5407.87 5890.00 3610.82 79.91 3530.90 5406.03 5880.00 3610.29 79.91 3530.38 5342.53 5620.00 2896.64 75.96 2820.68 5616.50 7190.00 5622.83 79.53 5543.30 Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Out of range Out of range Out of range Out of range Pass: Major Risk Pass: Major Risk Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Pass: Major Risk Out of range Out of range Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Out of range Out of range Out of range Out of range Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk • L~ BP Anticollision Report Comuany: BP Amoco Dater 12/15/2005 'l'ime: 11:59:45 Field; Prudhoe Bay Reverence Site: PB Z Pad tvo-ordinate(NE) Reference: WeIC Z-46, True North Reference WeII: Z-46 Veirtical (TVD) Reference: Z-46 82.8 teference N'ellpath: :Plan Z-46A Summary < -- ------ Offset Wellpath ----- ----------> Reference Site Well W ellpath 1ViD >ft PB Z Pad Z-04 Z-04A V10 5610.23 PB Z Pad Z-05 Plan#3 Z-05AP61 VO Pla 5869.04 PB Z Pad Z-05 Plan#4 Z-05A VO Plan: 5869.04 PB Z Pad Z-05 Z-05 V3 5869.04 ' PB Z Pad Z-06 Plan#7 Z-06A V3 Plan: 5603.27 ' PB Z Pad Z-06 Z-06 V1 5603.27 PB Z Pad Z-07A Z-07A V1 ', PB Z Pad Z-07 Z-07 V1 PB Z Pad Z-08A Z-08A V1 PB Z Pad Z-08 Z-08 V1 PB Z Pad Z-09 Plan 1, Z-09A V1 Plan: I, PB Z Pad Z-09 Z-09 V4 5858.87 PB Z Pad I Z-100 Z-100 V7 ~ PB Z Pad Z-101 Plan Z-101A V3 Plan: Z !~ PB Z Pad Z-101 Plan Z-101APB1 VO Plan PB Z Pad Z-101 Z-101 V5 PB Z Pad Z-103 Z-103 V1 5435.32 ~~ PB Z Pad Z-103 Z-103P61 V3 5435.32 ~i PB Z Pad Z-103 Z-103P62 V1 5435.32 PB Z Pad Z-10 Z-10 V1 PB Z Pad Z-10 Z-10A WPS V1 Plan: Z-1 PB Z Pad Z-11 Plan#3, Z-11A V1 Plan: 5358.74 PB Z Pad Z-11 Z-11 V1 5358.74 PB Z Pad Z-12 Z-12 V1 8150.88 ~ PB Z Pad Z-13 Z-13 V3 PB Z Pad Z-13 Z-13A V2 ', PB Z Pad Z-13 Z-13AP61 V3 ', PB Z Pad Z-14A Z-14A V1 5755.63 !~ PB Z Pad Z-14 Plan Z-14B V5 Plan: PI 5853.29 ~ PB Z Pad Z-14 Z-14 V1 5755.63 ~ PB Z Pad Z-15 Z-15 V1 5902.55 PB Z Pad Z-16 Z-16 V1 9848.36 PB Z Pad ~ Z-17 Z-17 V1 11703.22 PB Z Pad Z-18 Z-18 V1 13218.06 PB Z Pad Z-19 Plan Z-19A V3 Plan: PI PB Z Pad Z-19 Z-19 V1 !, PB Z Pad Z-20 Plan Z-20A V1 Plan: PI 5584.29 '~~ PB Z Pad Z-20 Z-20 V1 5584.71 '~ PB Z Pad Z-210 Z-210 V6 ', PB Z Pad Z-210 Z-210P61 V7 PB Z Pad Z-21 Z-21 V3 ', PB Z Pad Z-21 Z-21A V5 PB Z Pad Z-22A Z-22A V1 PB Z Pad Z-226 Z-226 V1 PB Z Pad Z-22 Z-22 V1 ', PB Z Pad Z-23 Z-23 V3 5646.80 PB Z Pad Z-23 Z-23A V2 5645.50 PB Z Pad Z-23 Z-23B V7 5653.62 PB Z Pad Z-24 Z-24 V1 PB Z Pad Z-25 Z-25 V1 ', PB Z Pad Z-26 Z-26 V1 PB Z Pad Z-27 Z-27 V1 ~I PB Z Pad Z-28 Z-28 V1 PB Z Pad Z-29 Z-29 V1 PB Z Pad Z-30 Z-30 V7 PB Z Pad Z-30 Z-30A V9 PB Z Pad Z-31 Z-31 V1 PB Z Pad Z-32A Z-32A V7 PB Z Pad Z-32BL1 Z-326L1 V2 PB Z Pad Z-326P61 Z-32BP61 V2 PB Z Pad Z-326PB2 Z-32BP62 V2 PB Z Pad Z-326 Z-326 V2 PB Z Pad Z-32 Z-32 V2 Offset MD ft 7160.00 9780.00 9780.00 9780.00 7690.00 7690.00 Pale: 2 Db: Oracle Ctr-Ctr No-Go Allowable Distance .Area Deviation Warning ft ft ft Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Out of range Out of range Out of range Out of range Out of range Pass: Major Risk Out of range Out of range Out of range Out of range Pass: Major Risk Pass: Major Risk Pass: Major Risk Out of range Out of range Pass: Major Risk Pass: Major Risk Pass: Major Risk Out of range Out of range Out of range Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Pass: Major Risk Out of range Out of range Pass: Major Risk Pass: Major Risk Out of range Out of range Out of range Out of range Out of range Out of range Out of range Pass: Major Risk Pass: Major Risk Pass: Major Risk Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range Out of range 5599.46 80.30 5519.16 8611.97 92.60 8519.37 8611.97 92.60 8519.37 8611.97 92.58 8519.39 6146.55 104.31 6042.24 6146.55 104.20 6042.35 10790.00 9685.71 113.57 9572.14 5890.00 3535.40 63.73 3471.67 5890.00 3535.40 63.73 3471.67 5890.00 3535.40 63.73 3471.67 5660.00 3070.55 71.85 2998.70 5660.00 3070.55 71.93 2998.62 8730.00 2868.98 142.49 2726.49 8170.00 6593.86 91.60 6502.26 10160.00 8184.00 97.91 8086.09 8170.00 6593.85 91.60 6502.26 10610.00 9279.15 126.46 9152.69 9800.00 1021.46 177.82 843.64 11830.00 260.73 241.25 19.49 12540.00 1142.57 192.48 950.09 7370.00 5295.97 332.30 4963.66 7420.00 5342.93 375.52 4967.41 6980.00 5398.45 60.73 5337.72 6960.00 5387.35 54.85 5332.50 7000.00 5431.17 53.59 5377.57 • i BP Anticollision Report Company: BP Amoco Date: 12/15/2005 Time: 11:59:45 Pake: 3 Field: Prudhoe Bay Reference Site: PB Z Pad Co-ordinate(NE) Reference: Well: Z-46, True Nort h Reference Wcll: Z-46 Vertical (TVD) Reference: Z-46 82. 8 ReferenceWellpath: Plan Z-46A Db: Oracle Summary 'I <______-------- - Offset Wellpath --- -----> Reference Offset Ch•-Ctr No-Go Allowable Site- Well. .Wellpath MD N[D Distance Area Deviation Warning ft ft ft ft ft PB Z Pad Z-33 Plan Z-336 V2 Plan: PI 5550.84 6500.00 4684.74 73.24 4611.51 Pass: Major Risk ~ PB Z Pad Z-33 Z-33 V1 5557.94 6590.00 4781.79 69.30 4712.49 Pass: Major Risk ', PB Z Pad Z-33 Z-33A V1 5550.84 6500.00 4684.74 73.13 4611.61 Pass: Major Risk PB Z Pad Z-35PB1 Z-35PB1 V2 Out of range PB Z Pad Z-35 Z-35 V2 5797.34 8340.00 7235.84 69.84 7166.01 Pass: Major Risk ', PB Z Pad Z-38P61 Z-38P61 V3 Out of range PB Z Pad Z-38 Z-38 V5 Out of range PB Z Pad Z-39 Z-39 V18 5414.97 5820.00 3416.55 102.56 3313.99 Pass: Major Risk ', PB Z Pad Z-39 Z-39A V4 5414.97 5820.00 3416.55 102.62 3313.93 Pass: Major Risk PB Z Pad Z-46 Z-46 V13 4500.00 4500.00 0.00 0.00 0.00 FAIL: NOERRORS ', Field: Prudhoe Bay ', ', Site: PB Z Pad Well: Z-46 ', Wellpath: Plan Z-46A 58 100 -0 I I00 n Trnvelling Cylinder Azimuth (TFO+ALI) [deg) va Centre to Centro Separation [1008/in] I I ~ ~--------- -- I ~ -----i I i KUPARUK PIPELINE I 38 ^ ~~ ~ ~ 37 ^ \ ~m 18 17 I I 1 I ~ ~~ I I I ~ I ~ ~ ~ I 35 ^ I I I ' I 34 ^ I I I i Z-PAD 10 ^ r-J ~ g^ I i ^ 33 ~ - N- GRID I 8 ^ I I ^ 32 I I 7 ^ I j ^ 31 II 1920 g ^ i ~ ^ 30 I ~ I 5 ^ ~ J ~ I 29 m T11N 4 ^ I I I ^ 0i 2a ~ VICINITY MAP 3 ^ I Z-102i ~ 27 I N.T.S. I 2 ^ ~ SPARE-D ~ SPARE-C ~ I I SPARE-B ~ __ 103i ~ 1 ^ ---J II SPARE-A J ~ ^ r I ------- ^ P-5048 ° ° r~ I I ~^ ~~ II i ~.~P°° ° "S~9 ~>°°49~ ~ o~ I I I ~ ~ 39 ^ ~ i ^ - 22 °°°°°°°°°°°°°°°°°°°°°°°°°°°°°°° 11 ^ i i ^ 23 _ '~,°°° Richard F. Alliso 12 ^ i i ^ ^ 24 ~' 25 n f ~,°° ~ 0608 "~f I 13 ^ I I I ^ ~ I ~~D~q~,,~_ ~pT~ ~"'r P~ " I 14 ^ I I 26 I - ESSIDN I I I ^ Slot 1 I 15 ^ I Slot 2 ^ I 16 ^ ~ Slotl4 ~ Z-100 i SURVEYOR'S CERTIFICATE I ~ I ^ Z-101 I 1 HEREBY CERTIFY THAT I AM I 17 ^ I ~ I PROPERLY REGISTERED AND LICENSED 18 ^ I I I TO PRACTICE LAND SURVEYING IN Z - 46 i j I THE STATE OF ALASKA AND THAT 19 I THIS PLAT REPRESENTS A SURVEY I ~ ' I MADE BY ME OR UNDER MY DIRECT 20 ^ ~ ~ i SUPERVISION AND THAT ALL DIMENSIONS AND OTHER DETAILS ARE I ~ I I CORRECT AS OF SEPTEMBER 26, 2005. I ~ ~ I I I I ~ i ~ ~ _, I I I I Z-PAD NOTES 1. REFERENCE FIELD BOOK: W005-16 PGS. 46-47. 2. DATES OF SURVEY: SEPTEMBER 26, 2005. 3. ALASKA STATE PLANE COORDINATES ARE ZONE 4, NAD '27. 4. PAD AVERAGE SCALE FACTOR IS 0.999911213. LEGEND 5. HORIZONTAL CONTROL IS BASED ON Z PAD CONTROL MONUMENTS MON 2 AND MON 3. • AS-BUILT WELL CONDUCTOR 4. ELEVATIONS ARE BPX MEAN SEA LEVEL (M.S.L.) DATUM. ^ EXISTING WELL CONDUCTOR 6. VERTICAL CONTROL IS BASED ON Z PAD MONUMENTATION. LOCATED WITHIN PROTRACTED SEC. 19, T. 11 N., R. 12 E., UMIAT MERIDIAN, ALASKA WELL A.S.P. PLANT GEODETIC GEODETIC CELLAR SECTION N0. COORDINATES COORDINATES POSITION(DMS) POSITION(D.DD) BOX ELEV. OFFSETS 46 Z Y= 5,959,100.06 N= 1567.38 70'17'51.647" 70.2976797' 54 4 4,297' FSL - X= 599,737.58 E= 1870.05 149'11'32.315" 149.1923097' . 2 940' FEL by ~ (~~\(~~\ (I~~_ JOB N0: ® ~UIJOU~ SCALE: GPB WOA Z-PAD AS-BUILT CONDUCTOR WELL Z-46 SHEET: 1 of 1 • • SONDRA Q STEWMAN as-sn2ei 137 BP EXPLORATION AK 1NC "Mastercard Check" PO BOX 196612 Nf8 7-5 ANCHORAGE, AK 99519-6612 oaTE~~ -~~`~~- PAY TO THE /~` ~ ~ ~~ ~ G\`~,f~ i ~~ ORDER OF //_-- """" ~~ ~/~~ ,~1._~J DOLLARS First National 6 laska Anchorage, A++K ]]99501] ~~V` L ~~J% ~ i MEMO__ ~: L 2 5 2 0 0 0 6 0 ~: 9 9 L 4 •~~ 6 2 2 7 ~~~ L 5 6 4 ~~• 0 ~ 3-7 • • TRANSMITAL LETTER CHECK LIST CIRCLE APPROPRIATE LETTER/pARAGRAPHS TO BE INCLLiDED IN TRANSMITTAL LETTER WELL NAME ~ / PTD# 2~S -" ZO„~~-. CHECK WHAT APPLIES ADD-ONS I "CLUE" (OPTIONS) MULTI I The permit is for a new wellbore segment of LATERAL ~ existing well , Permit No, API No. (If API number i Production should continue to be reported as last two (2) digits I a function of .the original API number stated are between 60-69) f above. PILOT HOLE ~ In accordance with 20 AAC 25.005(f), all (per '; records, data and logs acquired for the pilot hole must be clearly differentiated in both name (name on permit plus PH) _and API number (SO - 70/80) from records, data and togs acquired far well (name on permit). SPACIlVG j The permit is approved subject to full EXCEPTION compliance with 20 AAC 25.055. Approval to perforate and produce/infect is contingent upon issuance of a conservation order approving a spacing exception. i (Comuanv Name1 assumes the liability of any protest to the spacing j exception that may occur. DRY DITCH A!1 dry ditch sample sets submitted to the SAMPLE ~ Commission must be in no greater than 30' j sample intervals from below the permafrost i or from where samples are first caught and 10' sample intervals through target zones. Rev: 04/01/05 C\jody\transm ittal_checklist WELL PERMIT CHECKLIST Field & Pool PRUDHOE BAY, PRUDHOE OIL -640150 Well Name: PRUDHOE BAY UN PBU Z-46A Program DEV Well bore seg ^ PTD#:2052030 Company BP EXPLORATION (ALASKA) INC Initial ClasslType DEV! 1-OIL GeoArea 890 Unit 11650 On/Off Shore On Annular Disposal ^ Administration 1 Permit_fee attached - Yes - - - 2 Lease number appropriate - - Yes 3 Unique well-name and number.- - --- ----- - ----- --- - - Yes_ .-- -- ------ -- -- ---------- -- ------ - -- - --- -- - 4 Welllocat_edina_tl_efinedpool-,-____________________________ _____ Yes_ -_--________---____-_-. - - 5 Well locatedp[operdistanCefromdrillingunitboundary._____---_--________-.- Yes_ _.-________________.---.---__.--.-__---- fi Welllocatedp[operdistance_f[omatherwells-_______- _--_____ Yes- -_______________________________________ 7 Sufficientacreageavailablein,drillingunit_-_--_-___ Yes_ _________________________________________- 8 Ifdeyiated,is_wellboreplat_included______________________________.- Yes_ _-__-_-_____-----_____-----__- ---_- 9 Ope[atoronlyaff_ectedparty_-_______________________________--_-- Yes_ _----_____ X 10 Operator has.appropriate-bond in force--- ------- -- ------ - - --- Yes. ----- - -- ---- -- - -- ---------- --- ----------- -- -- ---- - - 11 Permit can be issued without conservation order Yes Appr Date 12 Pe[mit_canbeissuedwithoutadminist[alive-appr_oyal_________________________ Yes- _--__-_-_-.-__.---__--_._--_-___--_---__-----___-.--____-.-____--__.- RPC 12!16/2005 13 Can permit be approved before 15-day wait Yes 14 Well located within area and strata authorized bylnjectionOrde[#(put1O#in_comments)-(FQr_ NA-- ------------------------------------------------------------_--__---_- 15 All wellswRhin114-mile area ofreyiewidentified(Forservicewellonly)_______________ NA-. --_____--.__-_____---__-____-____- 16 Pre-produced injector duration_ofpve-production less than_ 3 months-(For service well only) NA_ - _ _ - - - _ _ - _ _ - _ - - --- - - ACMP-Findingaf Consistency_hasbeenissued_for_thisp[oject______--_______-_- NA__ ______________________----_____---_-___--_- -- - Engineering 18 Conducto[str-ing-p_rovided--_------_____-------__--_-.-__-__--.- NA_ ____-._ - -- - -- 19 Surface casingprotects aII known USDWs - - - - - - NA - - - - - - - - - - - - - - - 20 CMTvoladequate-to circulate-onconductor&surf-csg_________________---___ NA__ _________----_--___ 21 CMT-voladeguate_to tie-[n long string to surfcsg----_------.--- ---------- No__ -----___.--___.--__..---__ --_--- -- -. ------ ------------- -- -- ~ 22 CMT_willGOVerallknow_n_productivehorizons_-________-__ ______.---,___ Yes- __-___---__________________ - -- - 23 Casing design&adequateforC,T,BS-permaftost__----------------- Yes- -----------------------.---------------------------------------,- _--- 24 Adequatetankage_orreseryepit------------------------------------- Yes- -_____Nabors_7ES,____---____-_--_-____-_-___--_ ---------------------------- 25 Ifa_re-drill,has_a1.0-403 forabandon_mentbeenapproved--------------- ------ Yes_ _---_-*___-----____-_._ - - 26 Adequatewellboreseparationproposed- -------- -- -- --------- - --- Yes- ------ -- --- --- ---------------- -- ------------------ ----- 27 Ifdiverterrequired,doesitmeetregulations_______________________________ NA_ __--_-Sidetrack.----_.___________-__-_____-__--__-_--____-_----__--_ -_ Appr Date 28 Drillingflu]d-program schematic&equiplistadequate_.--_-_____ ___________ Yes_ _----Max MW_11,0-ppg.---__-__-______----___-_----___-,_-___--__.-__ WGA 12116l2D05 29 BOPEs, do they meet regulation _ _ _ Yes , _ _ _ _ 30 BOPS.prflssratingappropriate;tesito_(putpsigincomments)_____________ ______ Yes. .---__Testto 3500psi._MSP2643psi._-__--___ _--.-_____-_-____-_-_--_--_--,----_-- 31 Choke.manifoldcomplieswlAPI_RP-53 (May84}_---____--------------- -- Yes, -_---_-.-_---_--_---_-_--. 32 Work will occur without operation shutdown- - _ _ - - - Yes , - - - 33 Is presence-of H2S gas-probable - - N0- - Not an H2S pad. - - 34 Mechanical-condition of wells within AOR verified (For service well only) - - - NA_ - - _ - _ - --------------------------------------------------------- Geology 35 Permitcanbeissuedwlohyd[ogen-sulfidemeasu[es___-___-_.__--___-_--,-_ No_- ._________________________-_ ------------------------------------------- 36 Data_presentedRnpotentialoyerpressurezones____----____--____ NA__ __________________________________-.-____-_---______,-_- ----------------- Appr Date 37 Seismicanalysis_ofshallowgas.zones__________________________________ NA__ .__-_____.----__________._--__-_____--.-____--_-__- -_--__ ------------ RPC 12116/2005 38 Seabed condition survey (if off-shore)-------------------------_.___--- NA__ - ___-__-____- ~39 Contact name/phone for weeky_progtess reports [exploratory only] , NA- --- Geologic Engineering lic D D D Commissioner: ate ate er ate: Commissioner: `J s