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205-151
Image Project Well History File Gover Page XHVZE This page identifies those items that were not scanned during the initial production scanning phase. They are available in the original file, may be scanned during a special rescan activity or are viewable by direct inspection of the file. Q2© ~- ~ ,~ ~ Well History File Identifier Organizing (doge) ^ Two-sided III IIIIII II III II III ^ Rescan Needed III IIIIII II II III III R CAN DIGITAL DATA OVERSIZED (Scannable) Color Items: ~kettes, No. ~ ^ Maps: ^ Greyscale Items: ^ Other, No/Type: ^ Other Items Scannable by a Large Scanner ^ Poor Quality Originals: OVERSIZED (Non-Scannable) ^ Other: ^ Logs of various kinds: NOTES: ^ Other:: BY: Maria Date: I /s/ Project Proofing III IIIIII IIIII II III BY: Maria Date: ~., l ~ /s/ Scanning Preparation _~ x 30 = + ~_ =TOTAL PAGES~~ ~ (Count does not include cover sheet) BY: Maria Date: /s/ Production Scanning II I II II II I I III I (III Stage 7 Page Count fro m Scanned File: _ ~~ (Count does include cover sheet) Page Count Matches Number in Scanning Preparation : ~ YES NO BY: Maria Date: ~~ I ~- I ©g /s/ Stage 7 If NO in stage 1 , page(s) discrepancies were found: YES NO BY: Maria Date: !s/ Scanning is complete at this point unless rescanning is required. II I II II II I II II I I III ReScanned II I IIIIII IIIII II III BY: Maria Date: /s/ Comments about this file: Quality Checked I II I III II II IIIII II I 10/6/2005 Well History File Cover Page.doc 13 d~ ~~ a8 DATA SUBMITTAL COMPLIANCE REPORT 2/61200$ Permit to Drill 2051510 Well Name/No. PRUDHOE BAY UNIT Z-46 Operator BP EXPLORATION (ALASKA) INC API No. 50-029-23280-00-00 MD 15828 TVD 9003 Completion Date 12/13/2005 Completion Status P&A REQUIRED INFORMATION Mud Log No Samples No DATA INFORMATION Types Electric or Other Log s Run: MWD DIR / GR, MWD DIR / GR / RES / PWD /AIM , USIT / GR /CCL Well Log Information: Log/ Electr Data Digital Dataset Log Log Run Tye MediFrmt Number Name Scale Media No ~D Asc Directional Survey ~ ~Rpt Directional Survey ~og Sonic 5 Col 1 (~g Sonic 5 Col 1 (~ C Lis 15422__ . Sonic Lis 15454 InductionlResistivity ~~~,, // 1~tog 15454 Induction/Resistivity 25 Blu I og 15454 Induction/Resistivity 25 Blu Well Cores/Samples Information: Name ADDITIONAL INFORMATION Well Cored? Y Chips Received? ?~`fPl-- Analysis 'fY1~ Received? Current Status P&A UIC N Directional Survey Yes (data taken from Logs Portion of Master Well Data Maint Interval OH / Start Stop CH Received Comments 0 15828 Open 2/14!2006 0 15828 Open 2/14/2006 3786 14876 Open 3/16/2006 CCL/GR/USIT-B 31-Dec- 2005 4475 11950 Open 3/16/2006 CCL/GR/USIT 14-Dec-20051' 3788 14884 Case 9/14/2007 LIS Veri, USIT, CCL w/ PDS Graphics 135 15841 Open 9/2812007 LIS Veri, GR, ROP, FET, DRHO, NPHI w/PDS and ' TIF graphics 108 15828 Open 9/28/2007 MD Vision Services 12- Dec-2005 108 15828 Open 9/28/2007 TVD Vision Services 12- -- - _ Dec-2005 - _ J Sample Interval Set Start Stop Sent Received Number Comments Daily History Received? Formation Tops Y / DATA SUBMITTAL COMPLIANCE REPORT Zisi2oos Permit to Drill 2051510 Well Name/No. PRUDHOE BAY UNIT Z-46 Operator BP EXPLORATION (ALASKA) INC API No. 50-029-23280-00-00 MD 15828 TVD 9003 Completion Date 12/13/2005 Completion Status P&A Current Status P&A UIC N Comments: Compliance Reviewed By: Date: • 09/24/07 ~7~Ii~t11mY~~~~r~ NO. 4414 Alaska Data 8 Consulting Services Company: State of Alaska 2525 Gambell Street, Suite 400 Alaska Oii & Gas Cons Comm Anchorage, AK 99503-2838 Attn: Christine Mahnken ATTN: Beth 333 West lth Ave, Suite 100 Anchorage, AK 99501 Field: Prudhoe Bay Wnll _Inh $ Inn nascrin4inn na4u RI Cnlnr cn 09-25 11695072 LDL ,i 4 -p 08/17/07 1 L-04 11661166 SCMT 08/25/07 1 15-268 11661165 MEM PROD PROFILE - / 08/23/07 1 02-126 11628789 MEM PROD PROFILE Q 08/20/07 1 02-11A 11428266 MCNL ~ / L 10/03/06 1 1 18-24AL2 11209591 MCNL L- ~ ~j (o'pt 03/23/06 1 1 14-07 11637334 RST ~ - / C 05/08/07 1 1 B-14 11637349 RST '~-- ! L/ 07/04/07 1 1 Z-08A 11630483 RST C 06/21/07 1 1 Z-46 40012671 OH EDIT MWD/LWD ~ / < 12/12/05 2 1 Z-46A 40012671 OH EDIT MWD/LWD # / - - 01/03/O6 2 1 E-37A 10928640 MCNL a p5 -~ / 06/14/05 1 1 B-34 11594510 RST u ~ _ ~ < ~. 06/14/07 1 1 MPH-17 11813063 CBUUSIT (PDC) CH EDIT ~U'3 -p(a ~ S ~ 07/21/07 1 r'LCHJG NGRIYVYYLCUUC KCa.CIYI CST SIt51VI1V15 AMU Kt1UKIVIMt7 VIVO tiVYT tAlaY IU: BP Exploration (Alaska) Inc. Petrotechnical Data Center LR2-1 - 900 E. Benson Blvd. ~ ~ ~' ~~ %.~.. Anchorage, Alaska 99508 Date Delivered: ~~~- ~-~ % U ~~~ :. lu,d31111I Il.iv~9tJl i . ~ ... S„~i~ - Alaska Data & Consulting Services 2525 Gambell Street, Suite 400 Anchorage, AK 99503-28 8 ATTN: Beth Received by: ~ -- 08/30/07 5chl+umberger Alaska Data 8 Consulting Services 2525 Gambell Street, Suite 400 Anchorage, AK 99503-2838 - ATTN: Beth Well~~ .Inh i! N0.4396 Company: State of Alaska Alaska Oil & Gas Cons Comm Attn: Christine Mahnken 333 West 7th Ave, Suite 100 Anchorage, AK 99501 Field: Prudhoe Bay Endicott I nn nncr.in4:nn n..a., m n..~... MPC-08 N/A RSTMIFL 08/10/07 1 - 11767136 MEM INJ PROFILE 08/12/07 P2-16 11856185 INJECTION PROFILE 08/02/07 1 07-02A 11649983 MEM PROD PROFILE - 08/07/07 1 R-13 11856186 INJECTION PROFILE 08/02/07 1 D-11A 11649982 MEM PROD PROFILE ( -' 07/26/07 1 S-42 11686773 LDL - 08/02/07 1 S-43 11855804 LDL 08/02/07 1 16-07 11855806 STATIC PRESSURE SURVEY - (S 08/04/07 1 16-21 11855805 STATIC PRESSURE SURVEY 08/04/07 1 1-09AIL-21 11849930 SBHP SURVEY 08104/07 1 2-681S-17 11630491 LDL 07/27107 1 1-23/0-15 11846802 STATIC PRESSURE SURVEY U ( - 08/11/07 1 Z-46 11057080 CH EDIT PDC GR (USIT) '~ 12/14/05 1 A-09A 11216203 MCNL - ~ J C t/ 06129/06 1 1 L3-11 11801065 RST / - ~ 05/31107 1 1 , a.~r..a.. r.vr".v••a.~~,rvc ~cvur,: q,~ .~~V nI~~vV i_+~IIJ RGI VRn111YV V17C VVr'T CAl.rl 1 V: BP Exploration (Alaska) Inc. --, , Petrotechnical Data Center LR2-1 900 E. Benson Blvd. Anchorage, Alaska 99508 r~ r ~ -. ,~~__( ~' q 200 Date Delivered: ~ ;+y ~ . ~ (. I Ig .~`#a {. p Alaska Data 8 Consulting Services 2525 Gambell Street, Suite 400 Anchorage, AK 99503-2838 ATTN: Beth ~.,i Received by ,~. ~, STATE OF ALASKA ALAS LAND GAS CONSERVATION COMION WELL COMPLETION OR RECOMPLETION REPORT AND LOG ~~~~ F,_!~ 2 4 2006 ~i~wl<a ~~d ~ has C:oct~. ~ommiSSlpl 1a. Well Status: ^ Oil ^ Gas ^ Plugged ®Abandoned ^ Suspended ^ WAG zoAAC 2s.,os 2oAAC 2s.,,o ^ GINJ ^ WINJ ^ WDSPL No. of Completions Zero Other ib. Well Class: (1ChUC8Q@ ®Development ^ Exploratory ^ Stratigraphic ^ Service 2. Operator Name: BP Exploration (Alaska) Inc. 5. Date Comp., Susp., or Aband. 12/13/2005 12. Permit to Drill Number 205-151. 305-387 3. Address: P.O.Box196612,Anchorage,Alaska 99519-6612 6. Date Spudded 11/17/2005 13. API Number 50-029-23280-00-00 4a. Location of Well (Governmental Section): Surtace: ' ' 7. Date T.D. Reached 12/12/2005 14. Well Name and Number: PBU Z-46 4297 FSL, 2940 FEL, SEC. 19, T11 N, R12E, UM Top of Productive Horizon: WA g. KB Elevation (ft): 82.8' 15. Field /Pool(s): Prudhoe Bay Field / Prudhoe Bay Pool Total Depth: 2624' FNL, 346' FEL, SEC. 31, Ti 1 N, R12E, UM 9. Plug Back Depth (MD+ND) 4475 + 2886 Ft 4b. Location of Well (State Base Plane Coordinates): Surface: x- 599738 y- 5959100 Zone- ASP4 10. Total Depth (MD+ND) 15828 + 9003 Ft 16. Property Designation: ADL 047453 _ _ TPI: x- --- y- --- _ Zone- -- Total Depth: x- 602541 Y- 5946936 Zone- ASP4 11. Depth where SSSV set N/A MD 17. Land Use Permit: ----'""--------" ----`------ i------- 18. Directional Survey ®Yes ^ No 19. Water depth, if offshore N!A MSL 20. Thickness of Permafrost 1900' (Approx.) 21. Logs Run: MWD DIR / GR, MWD DIR / GR / RES / PWD /AIM, USIT / GR / CCL 2. ASING, LINER AND EMENTING RECORD CASING NG PTH MD EPTH ND HALE AMOUNT SIZE WT. PER FT. GRADE Op TTOM OP TTOM $12E CEMENTING RECORD PULLED 20" 91.5# H-40 Surtace 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 4575' 15293' 2936' 8802' 9-7/8" 56 sx 'G', 275 sx 'G', 710 sx 'G' 23. Perforations open to Produc tion (MD + N D of Top and " " t4. TusING RECORD Bottom Interval, Size and Number; if none, state none ): SIZE DEPTH SET (MD) PACKER SET (MD) None N(A MD ND MD ND 25. AeID, FRACTURE, CEMENT $OUEEZE, ETC. DEPTH INTERVAL MD AMOUNT & KIND OF MATERIAL USED 15098' et EZSV 15011' P&A w/ 39 Bbls Class 'G', Asa sws bebw EZSV, a Bbls on top> 4650' et EZSV 4475' nd Plug; 32.5 BBIs Class 'G' 26• PRODUCTION TEST Date First Production: Not on Production 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". ~.. F E~ `~ 2[l~~ None ~IC~AL Form 10-407 Revised 12/2003 CONTINUED ON REVERSE SIDE 28. GEOLOGIC MARKER 29. _ ORMATION 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 4940' 3109' None Ugnu M 7284' 4250' Schrader Bluff N 7815' 4513' Schrader Bluff O 8205' 4708' Base Schrader Bluff /Top Colville 8868' 5039' H RZ 12139' 6675' Kalubik 12662' 6958' Kuparuk C 12674' 6965' Miluveach 12741' 7005' Kingak 13620' 7616' Sag River 15297 8805' Shublik 15324' 8823' Eileen 15511' 8925' Sadlerochit 15610' 8961' 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 ~~//~ PBU Z-46 205-151 305-387 Prepared By NameMumber.• Terrie Hubble, 564-4628 Well Number Permit No. / A royal No. brining Engineer: Shane Gagliardi, 564-5251 INSTRUCTIONS GENERn~: 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 S: 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 APt number reported to AOGCC must be 14 digits (ex: 50-029-20123-00-00). ITEM 20: True vertical thickness. ITEM 22: Attached supplemental records for this well should show the details of any multiple stage cementing and the location of the cementing tool ITEM 23: If this well is completed for separate production from more than one interval (multiple completion), so state in item 1, and in item 23 show the producing intervals for only the interval reported in item 26. (Submit a separate form for each additional interval to be separately produced, showing the data pertinent to such interval). ITEM 26: Method of Operation: Flowing, Gas Lift, Rod Pump, Hydraulic Pump, Submersible, Water Injection, Gas Injection, Shut-In, or Other (explain). ITEM 27: If no cores taken, indicate "None". ITEM 29: List all test information. If none, state "None". Form 10-407 Revised 12/2003 Submit Original Only BP EXPLORATION Page 1 of 1- Leak-Off Test Summary Legal Name: Z-46 Common Name: Z-46 Test Date Test Type Test Depth (TMD) Test Depth (TVD) AMW Surface Pressure Leak Off Pressure (BHP) E.MW 11/24/2005 LOT 4,507.0 (ft) 2,920.0 (ft) 8.80 (ppg) 785 (psi) 2,120 (psi) 13.98 (ppgj 12/10/2005 FIT 15,314.0 (ft) 8,800.0 (ft) 9.10 (ppg) 870 (psi) 5,030 (psi) 11.00 (ppg) 12/18/2005 LOT 4,475.0 (ft) 2,885.0 (ft) 8.80 (ppg) 550 (psi) 1,869 (psi) 12.47 (ppg) 12/28/2005 FIT 12,030.0 (ft) 8,730.0 (ft) 8.40 (ppg) 725 (psi) 4,534 (psi) I 10.00 (ppg) Printed: 1/76/2006 11:48:53 AM ,~ BP EXPLORATION Page 1 of 12 Operations Summary Repolrt 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 11/15/2005 08:00 - 12:00 4.00 MOB P PRE R/D steam and electrical service for derrick down move. Prep rig to lay down derrick. Install jeep on pits complex. 12:00 - 15:30 3.50 MOS P PRE R/D rig floor to lay down derrick & LD same. Move Shop, Satellite camp and pits complex to Z-pad. 15:30 - 20:00 4.50 MOB P PRE 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 oii and service top drive. Perform visual inspection of derrick. Note: Security unavailable to move substructure 17:00 - 20:00 Hrs. 20:00 -00:00 4.00 MOB P PRE Move rig from W-Pad to Z-Pad. i 1116/2005 00:00 - 01:30 1.50 MOB P PRE Cont' move rig onto Z-pad and position same to raise the derrick. 01:30 - 02:30 1.00 RIGU P PRE PJSM and raise derrick and cattle chute, pin torque tube. RID bridle lines and secure in derrick. MU kelly hose and standpipe. 02:30 - 05:00 2.50 RIGU P PRE Lay herculite around Z-46, stage well head equipment and 20" surface preventer in cellar area. 05:00 - 09:00 4.00 RIGU P PRE Spot sub over well and level same. Spot mud pits. Note: Rig accepted ~ 09:00 Hrs. 11/16/2005 09:00 - 12:00 3.00 RIGU P PRE RU service lines on rig, Start NU Diverter. 12:00 - 19:30 7.50 RIGU P PRE 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 ~ 15:30 Hrs. 19:30 - 21:30 2.00 RIGU P PRE PU 5" drill pipe 1x1 building stands to drill surface 21:30 - 22:30 1.00 RIGU P PRE Function test diverter system, gas alarms. Function test witnessed by John Spaulding, AOGCC & Chris Clemens (WSL) 22:30 -00:00 1.50 RIGU P PRE Cont' PU drill pipe and stand back same. 11li7/2005 00:00 - 02:00 2.00 RIGU P PRE Pick up remainder of 5" drill pipe and rack back. 02:00 - 03:30 1.50 RIGU P PRE Load pipe shed with HWDP, Steam boxes and SLM, PU and stand back 5" HWDP and jar stand. 03:30 -04:00 0.50 RIGU P PRE PU BHA to rig floor and steam same. 04:00 - 05:30 1.50 DRILL P PRE MU 13 1/2" Bit, Motor and 1 stand HWDP 05:30 -06:30 1.00 DRILL P PRE PJSM- RU Gyro Data Wire line unit and hang sheave in derrick. 06:30 - 07:30 1.00 DRILL P PRE Fill hole with mud and check circulating system for leaks. 07:30 - 08:30 1.00 DRILL P SURF Drill ice out of conductor pipe from 40' to 108' and continue to drill new hole from 108' to 124' 08:30 - 09:00 0.50 DRILL P SURF Stand back HWDP 09:00 - 11:00 2.00 DRILL P SURF PU BHA, NM-LDC, NM-Stab, MWD, UBHO, NM-Stab, NM-LDC, XO, & orient same. 11:00 - 12:00 1.00 DRILL P SURF Run Gyro survey, use two different tools and tattle tail to verify tool accuracy. 12:00 - 19:00 7.00 DRILL P SURF Drill from 124' to 283' Printed: 1/16/2006 11:49:00 AM BP EXPLORATION Page 2 of ~ 2 Operations Summary Report Legal Well Name: Z-46 Common Weli 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 #iby 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 TQ-On 6k, TQ-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' 11/19/2005 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 RIH. 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. 11/20/2005 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: 1/16M2006 11:49:00 AM BP EXPLORATION- Page 3 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' Phase Description of Operations- 11/20/2005 19:30 - 20:00 0.50 CASE P SURF circulate through and check floats, Held. 20:00 -00:00 4.00 CASE P SURF Cont' Run 10 3/4" casing, torque connections to 8,400 fUlbs. Install bow spring centralizers on first 1ljoints. 49 jts ran. 11/21/2005 00:00 - 07:00 7.00 CASE P SURF Run 10 3/4" casing to TD, torque connections to 8,400 ft/Ibs. Starting pushing mud away ~ 3,300 ft. 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. 07:00 - 07:30 0.50 CASE P SURF RD Franks fill up fool and blow down top drive. MU plug dropping cement head and RU lines. 07:30 - 09:00 1.50 CASE P SURF Stage pumps up to 7 bpm, 505 psi. Hold PJSM for cementing while conditioning mud. Up wt. 190k. DN wt. 90k. 09:00 - 13:30 4.50 CEMT P 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 retums throughout job. Cement back to surface after 162 bbls into displacement pumped. 260 bbls. cement retums back to surface. CIP ~ 13:10 hrs. Reciprocate pipe until Lead Cement was up into the permafrost. 13:30 - 16:30 3.00 CEMT P SURF LD cement head. Back out landing joint & LD same. Drain riser, flush cement out of diverter equipment and flow line. 16:30 - 19:30 3.00 DIVRTR P SURF ND diverter system, wash cement and gravel out of 20" annular and knife valve. 19:30 - 21:00 1.50 WHSUR P SURF NU FMC Wellhead and test metal to metal seat to 1000 psi and hold for 10 min. Held. 21:00 - 00:00 3.00 BOPSU P SURF NU ROPE 11/22/2005 00:00 - 02:30 2.50 BOPSU P SURF Cont' NU BOP and riser. 02:30 - 05:00 2.50 BOPSU P 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. 05:00 - 11:00 6.00 BOPSU N SFAL 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. 11:00 - 16:30 5.50 BOPSU P SURF PJSM-Test ROPE 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. 16:30 - 17:30 1.00 BOPSU P SURF BD lines, RD test equipment and install wear bushing. 17:30 - 22:00 4.50 BOPSU P SURF PU and single in hole w/114 jts. of 5" drill pipe. 22:00 - 23:30 1.50 BOPSU P SURF POH standing back 5" drill pipe. 23:30 -00:00 0.50 BOPSU P SURF PU and single in hole w/5" drill pipe. 11/23/2005 00:00 -06:30 6.50 DRILL P INT1 PU 5" drill pipe and single in hole. POH & rack in derrick. Pcinled: 1/16/2006 11:49:00 AM BP EXPLORATION. Page 4 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 Phase Description of Operations 11/23/2005 06:30 - 10:30 4.00 DRILL P INT1 PU and RIH w/BSS BHA #3. Surface test MWD per Schlumberger. 10:30 - 14:00 3.50 DRILL P INT1 PU and RIH w 5" drill pipe singles to 2616'. 14:00 - 14:30 0.50 DRILL P INTi CBU ~ 2616'. 430 gpm, 800 psi. BD top drive. 14:30 - 16:30 2.00 DRILL P INT1 PU 5" drill pipe and continue RIH to 4221'. 16:30 - 18:00 1.50 DRILL P INT1 Slip and cut 95' of drilling line. Service rig and top drive. 18:00 - 19:00 1.00 DRILL P INTi RU and test 10-3/4" surface casing to 3500 psi for 30 minutes. BD and RD test. 19:00 - 21:00 2.00 DRILL INTi Tag plugs/cement at 4389'. Drill plugs, float collar, and cement to 4472'. 400 gpm, 800 psi, 40 rpm, 10-15K tq. 21:00 - 22:00 1.00 DRILL P INT1 Displace hole to 8.8 ppg LSND mud. 22:00 - 22:30 0.50 DRILL P INT1 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. 22:30 - 23:30 1.00 DRILL P INT1 CBU 8.8 ppg LSND mud in and out. 23:30 - 00:00 0.50 DRILL P INTi 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. ADT = .56 hrs. 11/24/2005 00:00 - 00:30 0.50 EVAL P INTi RD test lines and BD kill line. 00:30 - 12:00 11.50 DRILL P INT1 Drill 9-7/8" hole w/BSS from 4507' to 6035'. Up wt. 135K, SO wt. 95K, Rot wt. 105, 150 RPM, tq. on i i-14, tq. off 12K, gpm 630, 1540 psi. ECD calc. = 9.27, ECD act. = 9.95. Pump HI-Vis sweep at 6019'. No increase of cuttings. 12:00 - 20:00 8.00 DRILL P INT1 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 calc. = 9.47, ECD act. = 9.75. 20:00 - 21:30 1.50 DRILL P INT1 Change all shaker screens due to blinding in the Ugnu. 21:30 -00:00 2.50 DRILL P INTi Drill 9-7/8" hole w/BSS from 6976' to 7235'. Up wt. 155K, SO wl. 105K, Rot wt. 123K, 150 RPM, tq. on 14, tq. off 13K, gpm 600, 1540 psi. ECD calc. = 9.47, ECD act. = 9.75. ADT w/RSS for 24 hrs = 11.9 hrs 11/25/2005 00:00 - 00:30 0.50 DRILL P INT1 Drill directionally w/RSS to 7250'. 00:30 -00:45 0.25 DRILL P INT1 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. 00:45 - 06:00 5.25 DRILL P INT1 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 calc. = 9.46, ECD act. = 9.74. 06:00 - 00:00 18.00 DRILL P INTi 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 calc. = 9.48, ECD act. = 10.15. ADT f/24 hrs = 16.37, total footage = 2182'. 11/26/2005 00:00 - 06:00 6.00 DRILL P INT1 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 calc. = 9.56, ECD act. _ 10.06. Pump 30 bbls. 9.1 ppg Hi-Vis sweep around. Saw 50% Printed: 1/16/2006 11:49:00 AM BP EXPLORATION Page'5 ofi 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 '. Phase Description of Operations 11/26/2005 00:00 - 06:00 6.00 DRILL P INTi increase in cuttings across shakers. 06:00 - 16:00 10.00 DRILL P INT1 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• 16:00 - 18:00 2.00 DRILL N DPRB INT1 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. 18:00 - 21:30 3.50 DRILL N DPRB INT1 Pump 30 bbls. LCM pill 37.5 ppg wl25 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. 21:30 - 00:00 2.50 DRILL P INT1 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. 11/27/2005 00:00 - 06:00 6.00 DRILL P 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. 06:00 - 22:00 16.00 DRILL P INT1 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. ADT for 24 hrs. = 17.14. Footage = 801. Cumulative ROP for 24 hrs = 46.7'/hr. 22:00 - 00:00 2.00 DRILL P INT1 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 PPg• 11/28/2005 00:00 - 06:00 6.00 DRILL P INTi POH. Mud wt. in and out 10.4 ppg. Pull over and some swabbing in Ugnu f/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. 06:00 - 07:00 1.00 DRILL P INTi LD BHA. 07:00 - 07:30 0.50 DRILL P INT1 Download MWD, function test BOP, clean rig floor. 07:30 - 10:00 2.50 DRILL P INT1 MU new bit. PU BHA. Change out stabilizer. Surface test power unit. Change out jars. 10:00 - 13:00 3.00 DRILL P INT1 PU 5" drill pipe and single in hole. 13:00 - 13:30 0.50 DRILL P INT1 RIH hole w/stands to shoe at 4475'. 13:30 - 14:00 0.50 DRILL P INT1 Service top drive and rig. 14:00 - 18:30 4.50 DRILL P INT1 RIH to 11511'. Up wt. 220K, SO = 115K. 18:30 - 19:00 0.50 DRILL P INTi Ream from 11511' to bottom at 11606'. 500 gpm, 2650 psi, 140 rpm, tq. 12K. 19:00 - 00:00 5.00 DRILL P INT1 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: 1/76/2006 71:49:00 AM ~' BP EXPLORATION Page 6 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: NABORS ALASKA DRILLING I Rig Release: 1/9/2006 Rig Name: NABORS 7ES Rig Number: 7ES Date From - To Hours 'Task Code NPT Phase Description of`Operations 11/28/2005 19:00 - 00:00 5.00 DRILL P INT1 to well at 11701' prior to prognosed HRZ penetration depth of -12239'. ADT 3.05 hrs., footage = 284, ROP = 93.11 f.Uhr. 11/29/2005 00:00 - 06:00 6.00 DRILL P INT1 Drill directionally w/RSS 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 talc. = 11.46ppg vs. ECDs act. = 11.75ppg. 06:00 - 15:00 9.00 DRILL P INT1 Drill directionally from 12063' to 12556'. 15:00 - 15:30 0.50 DRILL P 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. 15:30 - 16:00 0.50 DRILL P INTi 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. 16:00 - 18:30 2.50 DRILL P INT1 Circulate LCM sweep around and stage stands back to bottom at 12556'. 450 gpm, 120 rpm. 18:30 - 00:00 5.50 DRILL P INT1 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 11/30/2005 00:00 - 02:00 2.00 DRILL P INT1 Drill directionally from 12935' to 13211'. ECDs spike to 13.42 ppg actual vs. 11.2 ppg calculated, 02:00 - 03:30 1.50 DRILL P INTi CBU to clean up wellbore. 450 gpm, 1893 psi, 40 rpm, tq. off 13K. 03:30 - 06:00 2.50 DRILL P 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 06:00 - 20:00 14.00 DRILL P 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'fir to tower ECDs. 13219' partial retums, ROP 143 ft/hr. w/ECDs 11.56 talc. vs. actual 12.35. Pumped weighted sweep (12.2 ppg) at 13262' with a 25% increase in cuttings. 13315' ROP 141 ft/hr., pump weighted sweep 604 gpm, 3130 psi. 13408' ROP dropped to 56 ft/hr. Sweep back w/25% increase across shakers. 13580' ROP 51 ft/hr, 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: 1/76/2006 t1:49:00AM BP EXPLORATION _Page 7 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 t=rom - To Hours Task Code NPT Phase: Description of Operations. 11/30/2005 06:00 - 20:00 14.00 DRILL P INT1 and clean screen sweep, 582 gpm, 3380 psi. 13787' ROP 24fUhr, 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 fUhr. Dropped back to 34 ft/hr. 20:00 - 21:00 1.00 DRILL P INT1 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 {aging down drill pipe. 09:30 - 10:30 1.00 DRILL P INTi 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 INTi PU new RSS components, MU new RS191H+ bit, RIH, shallow test BSS. 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 INTi RIH w/stands of 5" drill pipe to 7085'. 07:30 - 08:00 0.50 DRILL N RREP INTi Trouble shoot electrical malfunction w/top drive. 08:00 - 10:30 2.50 DRILL P INTi POH above 10-3/4" shoe to 4243'. 10:30 - 11:30 1.00 DRILL P INTi PU 10-3/4" RTTS Storrs 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 INTi 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 INTi PU two jts of drill pipe. RIH w/running tool and retrieve RTTS storm packer. 18:00 - 21:00 3.00 DRILL P fNT1 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 spike fM2.0 ppg to 13.4 ppg. Printed: 7/16/2006 71:a9:00 AM BP EXPLORATION Pages 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 Phase Description of Operations 12/3/2005 21:45 - 23:00 1.25 DRILL 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. 23:00 - 00:00 1.00 DRILL P INT1 Drill directionally f/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 i i connections. I 12/4/2005 ~ 00:00 - 06:00 6.00 DRILL P 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. 06:00 - 08:30 2.50 DRILL P INTi Drill f/15100' to 15260' and per geo CBU for samples, 600 1 gpm, 3340 psi. 08:30 - 12:00 3.50 DRILL P INT1 Drill f/15260' to 15270' and per geo CBU for samples, 600 gpm, 3340 psi. 12:00 - 14:00 2.00 DRILL N DFAL INT1 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. 14:00 - 14:45 0.75 DRILL N DFAL INT1 RIH fJ14025' to 15280'. 14:45 - 16:45 2.00 DRILL P INTi Drill directionally f/15280' to 15292' and per geo CBU for samples at 600 gpm,-3340 psi. 16:45 - 17:00 0.25 DRILL P INT1 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. 17:00 - 18:30 1.50 DRILL P INT1 Short trip to last bit trip point at 13700'. 18:30 - 19:30 1.00 DRILL P INT1 RIH f/13700' to 15294'. 19:30 -00:00 4.50 DRILL P INTi 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. 12/5/2005 00:00 - 01:30 1.50 DRILL P INT1 POH pumping drill pipe displacement x 2 and stand back 10. Monitor well. Slight breathing. Mud wt. in and out = 11.1 ppg. 01:30 - 12:00 10.50 DRILL P INT1 Blow down TD. Pump dry job. POH f/14221' to 6400' laying down 5" drill pipe. 12:00 - 15:00 3.00 DRILL P INT1 BD. POH f/6400' to BHA laying down drill pipe. 15:00 - 15:30 0.50 DRILL P INT1 RIH w/11 stands drill pipe from derrick. 15:30 - 18:30 3.00 DRILL P INTi POH laying down remaining 33 jts of drill pipe. 18:30 - 21:45 3.25 DRILL P INT1 PJSM for handling nukes, LD BHA, clean floor. 21:45 - 22:15 0.50 BOPSU P INT1 Pull wear bushing, set test plug. i 22:15 - 00:00 1.75 BOPSU P INT1 Change out upper and lower pipe rams to 7-5/8". Printed: tJt6/2006 tt:49:00AM BP EXPLORATION Page 9 of 12 Operations Summary Report Legal Well Name: Z-46 Common Well Name: Z-46 Spud Date: 1 1 /1 712005 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 Hotars- Task Code NPT Phase Description of Operations 12/6/2005 00:00 - 02:00 2.00 BOPSU P INT1 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 fNT1 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 INT1 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, ~ 8500' pushing mud away, break circulation on the fly every 5 jts. total 245 jts. ran 9895' ~ 00:00 hrs. 232 bbls mud loss while running. 12/7/2005 00:00 - 13:00 13.00 CASE P INT1 Cont' RIH with 7-518' casing breaking circulation on the fly to 12000' THRZ and cont' RIH filling every joint. Circulate last joint and tag bottom ~ 15294', Ran tota1378 jts. 13:00 - 13:30 0.50 CASE P INT1 LD Franks Fill up too{ and MU Ptug 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 INT1 PJSM -Load head with bottom plug. Test lines to 4000. Clear water from lines through Tee and pump 50 bbis mud push ~ 11.5 ppg. Drop bottom plug and load cement head with top plug. Pump 223 bbis. 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 ~ 21:05 hrs. 15 to 20% retums during cement job. 21:30 -00:00 2.50 CEMT P INT1 Shear open ES Cementer with 3500 psi. Circulate and condition mud ~ 6 bpm 550 psi while waiting on 500 psi compressive strength on 1st stage cement job. Full Retums 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 retums. 02:00 -04:30 2.50 CEMT P INT1 PJSM -Pump 40 bbls CW-100. Pump 50 bbis mud push ~ 11.5 ppg. Pump 147 bbis. 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 bbis. Pressure to 1800 psi to close ES cementer and hold pressure for 5 min. Bleed off pressure and comfirm that cementer closed. CIP ~ 04:30 hrs. 100% retums during cement job. 04:30 - 05:00 0.50 CEMT P INT1 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 INT1 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 3-112" x 6" and bottom rams to 2-7l8" x 5". RU secondary kill line to annulus. Change out top drive quill to 4". Printed: 1/16/21X16 11:49:1x) AM BP EXPLORATION Page 10 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 Phase 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 1 Sub / NM STB / NM LDC /MWD / 3 - NM Flex DC's /Pump 23:00 - 00:00 1.00 DRILL P ~ PROD1 Out Sub /Jar. and orient same. RIH picking singles of drill pipe 1 x 1. shallow test MWD ~ 675'. 12/9/2005 00:00 - 08:00 8.00 DRILL P PROD1 RIH picking up singles of drill pipe 1 x 1. tag ES cementer ~ 9588' 08:00 - 10:30 2.50 DRILL P PRODi 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. 11:30 - 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 1.00 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 PRODi 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-SOk, RT WT-135k, TO-17.5k On & Off Bttm., 250 GPM, 2600 PSI. 12/10/2005 00:00 - Oi:30 1.50 DRILL P PRODi Drill cement from 15232', down to float collar at 15251' and cement down to 15290'. UP WT-200k, DN WT-80k, RT WT-130k, TO-17.Sk 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 w/ 10°!o Steet 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, TQ-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 From - To 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 PROD1 Circulate and condition mud. 04:30 - 05:30 1.00 DRILL P PROD1 RU and perform FIT to 11ppg EMW. 9.1ppg 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-i35k, 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 PRODi Drill from 15352' to 15430' UP WT-200k, DN WT-i35k, 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-i35k, 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 ft/hr sliding and 10 ft/hr 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-i35k, 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 PRODi Drill from 15551' to 15637' UP WT-205k, DN WT-i35k, 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-i35k, RT WT-160k, TO Off 8k, TO ON 11 k, 330 GPM, 2875 psi. off Bttm. 3000 psi on Bttm. ART=1.68 !AST=1.221 ADT=2.9 16:00 - 17:30 1.50 DRILL P PRODi 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 ~ 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 PRODi 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 11:49:00 AM BP EXPLORATION Page 12 of y2 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 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~1 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 C~ 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 PROD1 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 1 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 toots. 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. Load 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 C~ 4970' 16:00 - 19:00 3.00 STCTPL P PROD1 MU 6.5" Gauge Ring /Junk Basket & RIH to 5000' POH and LD same. Printed: 1/16/2006 11:49:00 AM '$P EXPLORATION Page 1 of 1'z: Operations Summary Report 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 12/14/2005 19:00 - 21:00 2.00 DHB P DECOMP MU 7-5/8" EZSV, RIH Correlate and set ~ 4650' POH & RD SWS. 21:Q0 - 21:30 0.50 STCTPL P DECOMP RU & Test Casing to 3500 psi and record on chart fior 5 min. Held. Blow down lines. 21:30 - 22:00 0.50 STCTPL P DECOMP PJSM with Baker Fishing Rep & MU BHA #1, 7-5/8" Csg Cutter / Stablizer / XO 22:00 - 00:00 2.00 STCTPL P DECOMP RIH to 3070' 12/15/2005 00:00 - 01:00 1.00 STCTPL P DECOMP Cont' RIH with 7-5/8" cutter to 4500' 01:00 - 03:00 2.00 STCTPL P DECOMP Slip and Cut new reel 1200' of drilling line. 03:00 -04:00 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'. 04:00 -04:30 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. 04:30 - 06:00 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. 06:00 - 06:30 0.50 STCTPL P DECOMP Monitor well, Static. Blow down Top Drive and choke manifold. 06:30 - 09:30 3.00 STCTPL P DECOMP POH, LD 7-5/8" casing cutter. Clean and clear rig floor of vendors tools 09:30 - 11:00 1.50 BOPSU P DECOMP Pull wear bushing and install test plug. Change out top set of rams to 7-5/8" 11:00 - 11:30 0.50 BOPSU P DECOMP Fill stack with water and test bonnets to 3500 psi. Held. Pull test plug and LD test joint. 11:30 - 12:30 1.00 BOPSU P DECOMP ND BOP 12:30 - 13:00 0.50 WHSUR P DECOMP Remove 7-5/8" packoff 13:QO - 13:30 0.50 WHSUR P DECOMP Tack weld emergency slip segments to 7-518" casing stub to secure for pulling. 13:30 - 14:00 0.50 WHSUR P DECOMP Install 7-5/8" packoff. 14:00 - 15:00 1.00 BOPSU P DECOMP NU BOP 15:00 - 15:30 0.50 WHSUR P DECOMP Test Packoff and casing head flange to 3000 psi. Held. 15:30 - 16:00 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. 16:00 - 16:30 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. 16:30 - 17:00 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. 17:00 - 22:30 5.50 STCTPL P OECOMP POH Laying down 7-5/8" casing. recovered 111 jts, 1 cut joint 26.1 T 22:30 - 23:30 1.00 STCTPL P DECOMP Clean and clear rig floor, LD casing equipment. 23:30 - 00:00 0.50 BOPSU P DECOMP Install test plug and Change out top set of rams to 3-112" x 6" Var. 12/16/2005 00:00 - 00:30 0.50 BOPSU P DECOMP Cont' Change out top set of rams to 3-1/2" x 6' Var. 00:30 - 01:00 0.50 BOPSU P DECOMP Test bonnets and Rams to 3500 psi. Pull test plug and install wear bushing. 01:00 - 01:30 0.50 STCTPL P DECOMP Release spear from fish and break out XO's. 01:30 - 02:00 0.50 STCTPL P DECOMP RU 3-1/2' handling equipment. 02:00 -04:00 2.00 STCTPL P DECOMP RIH PU 30 jts of 3-1/2" NSCT 1x1. Printed: 1/76/2006 11:50:15 AM BP EXPLORATION 'Page' 2 of 12 Opera#ions Summary Report 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 12/16/2005 04:00 - 05:30 1.50 STCTPL P DECOMP RIH with 3-1/2" work string on 4" drill pipe. 05:30 - 06:00 0.50 STCTPL P DECOMP MU Top Drive and Wash from 4575' to EZSV ~ 4650' 06:00 - 07:30 1.50 STCTPL P DECOMP Circulate 5 bbl 18 ppg pill out of hole and condition mud for cement. 07:30 - 07:45 0.25 STCTPL P DECOMP LD 2 singles of drill pipe and PU 20' of pup and MU cement lines. 07:45 - 09:00 1.25 STCTPL P 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' 09:00 - 09:30 0.50 STCTPL P DECOMP POH slowly 5 stands to 4140' pulling wet. 09:30 - 10:30 1.00 STCTPL P DECOMP Circulate bottoms up, no cement retruns. Monitor well & pump dry job. Blow down top drive. Note: MW 9.2 ppg in & out 10:30 - 13:30 3.00 STCTPL P DECOMP POH laying down drill pipe 1x1 13:30 - 16:30 3.00 STCTPL P DECOMP RU 3-1/2" handling equipment and LD 3-1/2" NSCT work string. RD 3-1/2" handling equipment. 16:30 - 19:30 3.00 STCTPL P DECOMP RIH with 4" drill pipe from derrick and LD same. 19:30 - 20:30 1.00 STCTPL P DECOMP Change out top drive quill and pipe handler to 5" equipment 20:30 - 21:00 0.50 STCTPL P DECOMP Service Top Drive 21:00 - 22:30 1.50 BOPSU P DECOMP Pull wear bushing and RU test joint and install test plug. 22:30 - 00:00 1.50 BOPSU P DECOMP Test ROPE 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 12/i7/2005 00:00 - 02:00 2.00 BOPSU P 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 Bames 02:00 - 02:30 0.50 BOPSU P DECOMP RD Test equipment. Install wear bushing. Blow down lines. 02:30 -06:30 4.00 STCTPL P DECOMP PJSM-RIH picking up 129 Jts. 5" drill pipe 1x1 to -4065' 06:30 - 09:00 2.50 STCTPL P DECOMP POH Stand back 43 stands of 5" DP 09:00 - 11:00 2.00 STCTPL P DECOMP Load pipe shed with 129 jts 5" drill pipe SLM same. 11:00 - 15:30 4.50 STCTPL P DECOMP RIH picking up 129 Jts. 5" drill pipe 1x1 to -4065' 15:30 - 17:30 2.00 STCTPL P DECOMP POH Stand back 43 stands of 5" DP 17:30 - 18:30 1.00 STCTPL P DECOMP Load pipe shed with 105 jts 5" drill pipe, 17 jts. 5" HWDP and BHA. SLM same. 18:30 - 20:00 1.50 STKOH P INTi PJSM - MU Directional BHA #7 and orient same. Bit / 1.5 deg motor / XO / NM Stb /ARC / MW D / ADN 20:00 - 20:30 0.50 STKOH P fNTi PJSM -Load source. 20:30 - 22:00 1.50 STKOH P INTi Cont' RIH PU BHA / NM DC / NM Stb / NM DC /Saver Sub / Jar / 17 HWDP/ & Shallow flow test MWD ~ 710'. 22:00 -00:00 2.00 STKOH P INT1 RIH with BHA #7 PU 5" drill pipe 1x1. PU ghost reamer between Jts. 8 & 9. 12/18/2005 00:00 - 01:00 1.00 STKOH P INT1 RIH PU 5' drill pipe 1x1. 01:00 - 01:30 0.50 STKOH P INT1 MU Top drive and wash from 4100', tag TOC ~ 4230' 01:30 - 02:30 1.00 STKOH P INT1 CBU 450 gpm 780 psi. 02:30 - 03:30 1.00 BOPSU P INT1 RU test equipment and test 10-3/4" casing to 3500 psi. Loss 240 psi in 30 Min. RD, blow down test equipment. 03:30 - 05:00 1.50 STKOH P 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 $P EXPLORATION Page 3 of Operat-ions Summary Report Spud Date: 11/17/2005 End: 1 /1 1 /2006 Date From - To ~ Hours I Task I Code I NPT Phase j Description of Operations 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 I I I 12/18/2005 03:30 - 05:00 1.50 STKOH P 05:00 - 05:30 0.50 DRILL P 05:30 - 06:30 1.00 DRILL P 06:30 - 07:00 0.50 DRILL P 07:00 - 07:30 0.50 DRILL P 07:30 - 08:00 0.50 DRILL P 08:30 - 02:00 I 3.501 DRILL P 12:00 - 00:00 I 12.001 DRILL I P 112/19/2005 100:00 - 12:00 I 12.001 DRILL I P 12:00 - 00:00 I 12.001 DRILL ( P 12/20/2005 100:00 - 12:00 ( 12.00) DRILL I P 12:00 - 13:00 I 1.001 DRILL I P INT1 INT1 INT1 INT1 INTi INT1 INTt INT1 INT1 INTi INT1 INT1 INT1 13:00 - 14:00 1.00 DRILL P INTt 14:00 - 16:30 2.50 DRILL P INT1 16:30 - 18:00 1.50 DRILL P INT1 18:00 - 20:30 2.50 DRILL P INT1 20:30 - 21:30 1.00 DRILL P INT1 21:30 - 23:00 1.50 DRILL P INT1 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= .08 /AST= 1.101 ADT= 1.18 Cal. ECD 9.4, ACT ECD 9.4 Drill from 4888' to 6307' UP WT- 158k, DN W l-- 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.- 10-1 ik, 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 Dril( 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 f/4981' to 4888' MU topdrive and backream f/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 11:50:75 AM BP EXPLORATION. Page 4 of 12' .Operations Summary Report 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 i ~ i Date From - To ' Hours ~ Task I Code I 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. ART = 8.49, AST = 2.42, ADT 10.91, footage = 623, ROP = 57.1 ft/hr. 12/21/2005 00:00 - 02:30 2.50 DRILL P INT1 PU BHA. PJSM on nukes. Install sources and RIH. Surface test MWD. 02:30 - 05:30 3.00 DRILL P INTi RIH to shoe at 4475'. 05:30 - 06:00 0.50 DRILL P INT1 Spot Seal Lube pill at shoe. 06:00 - 08:30 2,50 DRILL P INT1 RIH to 4995' and work BHA through tight spots from 4995' to 5120'. Pump and rotate slowly. PU 150K, SO 80K, Rot. 20 08:30 - 09:30 1.00 DRILL P INT1 rpm, 250 gpm. 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. 09:30 - 10:30 1,00 DRILL P I INT1 Circulate 400 gpm and weight up to 10.5 ppg. mud weight. 10:30 - 20:00 9.50 DRILL P lNT1 Drill f/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. 20:00 - 21:30 1.50 DRILL P 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. 21:30 - 00:00 2.50 DRILL P 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. 12/22/2005 00:00 - 01:00 1.00 DRILL P INTi 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/MWO turbine flow/standpipe pressure. Pump flows constant 615 gpm, MWD turbine flow and standpipe pressure decreasing same ratio. 01:00 -04.30 3.50 DRILL N DFAL INT1 POH looking for washout. Find washout at slipsetting point (2' below tooljoint) on body of drillpipe joint at 5140'. 04:30 - 05:00 0.50 DRILL P INT1 POH 6 stands to shoe at 4475'. 05:00 -06:30 1.50 DRILL P INT1 Slip and cut drilling line. Perform rig service and service top drive. 06:30 - 09:30 3.00 DRILL N DFAL INTi RIH to 9700'. 09:30 - 21:00 11.50 DRILL P INT1 Drill w/BSS 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 f/3070 psi to 2470 psi. in 10 min. period. Shut down and check out all surface equipment and pumps. All ok. 21:00 - 00:00 3.00 DRILL N 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 Page 5 of 12 Operations Summary Report i Spud Date: 11/17/2005 End: 1 /11 /2006 Date From - To Hours Task 'Code NPT ' Phase ~ Description of Operations 12/22/2005 21:00 - 00:00 3.00 DRILL N DFAL fNT1 (TVD 7286') to 9884' (TVD 7066') . Overpull to 75k while 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 ~ I I ~ ~ ~ pumping out, packing off at several points w/partial returns. 12/23/2005 00:00 - 01:30 01:30 - 02:30 02:30 - 12:00 1.50 DRILL N DFAL INTi 1.00 DRILL N DFAL INT1 9.50 DRILL P INT1 12:00 - 12:30 0.50 DRILL N RREP INT1 12:30 - 15:00 2.50 DRILL N RREP INT1 15:00 - 16:30 1.50 DRILL P I I i INT1 16:30 - 17:30 1.00 DRILL P J! INTi ~ 17:30-18:00 0.50 DRILL P I INT1 18:00 - 20:00 I 2.001 DRILL I N I DFAL I INT1 20:00 - 00:00 I 4.OOI DRILL I P I INTi 12/24/2005 00:00 - 02:00 2.00 DRILL P INTi 02:00 - 03:30 1.50 DRILL P INT1 03:30 - 05:00 1.50 DRILL P INT1 05:00 -06:00 1.00 DRILL P INT1 06:00 - 07:00 1.00 DRILL P INT1 07:00 - 10:00 3.00 DRILL P INT1 10:00 - 11:45 1.75 DRILL P INT1 11:45 - 13:30 1.75 DRILL P INT1 13:30 - 15:30 2.00 DRILL P INT1 15:30 - 00:00 8.50 DRILL P INT1 12/25/2005 00:00 - 02:00 2.00 DRILL P INT1 02:00 - 03:00 1.00 DRILL P INT1 03:00 - 05:00 2.00 DRILL P INTi ADT = 8.21 hrs. Footage = 1024. ROP for day = 125'/hr. POH to find washout at 8080'. 1/2" hole at slip bite point (3' below tool joint). Lay down and replace jt. RIH to 10640'. No problem RIH through Miluveach. Wash down last stand at 185 gpm, 700 psi. Drill directionally w/9-7/8° 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. POH 5 stands. Change out dies in top drive drill pipe backup wrench. RIH to bottom. Drill 9-7/8" hole to 11399'. Maximum torque limitation of 23.7K reached. Back ream up to 11209'. Mix and pump tubes to 5%. Ream back to bottom. 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. 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. 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. Drill directionally w/9-7i8" RSS to 11971'. Drill to 11990' and circulate bottoms up for samples per geo. Drill to 11995' and circulate bottoms up for samples per geo. Drill io 12000' and circulate bottoms up for samples per geo. Drill to 12010' and circulate bottoms up for samples and per geo 7D intermediate section. Short trip. Pumped out of hole from 12010' 10640' well swabbing. Pulled OK from 10640' to 9696'. RIH to 12010'. Found tight hole at 10325', 10810' and 10870' to 10890'. Wash down 10830' to 10924'. Circulate and condition mud. Pump hi-vis sweep. 610 gpm, 2800 psi. Monitor well----static. POH w/15 stands. No swabbing. Pump dry job. Blow down topdrive. POH Laying 5" drill pipe down. POH laying down to HWDP. POH laying down 17 jts. 5' HWDP. 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 a ~. BP EXPLORATION Page 6 of 12 Operations Summary Report. 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 i i i ~ i Date ~ From - To ;Hours ' Task 'Code ' NPT ' Phase Description of Operations 12/25/2005 03:00 - 05:00 2.00 DRILL P INT1 60% of support structure. Clean floor. 05:00 - 06:30 1.50 CASE P INT1 Change out rams and test doors w/chart. 06:30 - 08:30 2.00 CASE P INTi RU 7-5/8" casing running equipment. 08:30 - 14:00 5.50 CASE P INTi 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. 14:00 - 15:00 1.00 CASE P INTi Circulate casing volume at shoe at 4475'. 252 gpm at 400 psi. 15:00 - 00:00 9.00 CASE P 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, I SO wt. 150K. 12/26/2005 00:00 - 03:00 j 3.00 CASE P 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'. 03:00 - 03:30 0.50 CASE P INT1 RD Franks tool and MU hanger and landing joint. 03:30 - 06:30 3.00 CEMT P 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. 06:30 - 09:30 3.00 CEMT P 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 INT1 Circulate and condition mud while waiting on cement compressive strength of 500 psi. f 8:00 - 18:30 0.50 CEMT P INT1 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 Surnmary Report- !, Spud Date: 11/17/2005 Fnd: 1 /1 1 /2006 Date ,From - To ;Hours , Task ,Code NPT ~ Phase ! Description of Operations 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 ~ 1 I I I 112/2612005 112/27/2005 22:30 - 23:30 1.00 CEMT ~ P 23:30 - 00:00 0.50 CASE P 00:00 - 02:45 2.75 CASE P 02:45 - 06:30 1 3.751 BOPSUR P INT1 INT1 INTi PROD1 ~ 06:30 - 07:00 07:00 - 11:00 11:00 - 13:00 13:00 - 14:30 14:30 - 00:00 12/28/2005 00:00 - 02:30 02:30 - 03:30 03:30 - 07:00 07:00 - 08:00 08:00 - 09:00 09:00 - 10:45 10:45 - 11:30 11:30 - 11:45 11:45 - 12:00 12:00 - 12:30 12:30 - 13:30 13:30 -00:00 0.50 BOPSU P 4.00 DRILL P 2.00 DRILL P 1.50 DRILL P 9.50 DRILL P 2.50 DRILL P 1.00 DRILL P 3.50 DRILL P 1.00 DRILL P 1.00 DRILL P 1.75 DRILL P 0.75 DRILL P 0.25 DRILL P 0.25 DRILL P 0.50 DRILL P 1.00 DRILL P 10.50 DRILL P 12/29/2005 i 00:00 - 04:30 I 4.501 DRILL I P PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PRODi PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PRODi 04:30 - 10:00 I 5.501 DRILL I N I DFAL I PROD1 Blow down, rig down cementing equipment, lay down landing joint. Install casing packoff, run in lock down screws and test to 3500 psi. OK. 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. 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 bb! diesel heated to 70 degrees. Final squeeze pressure 900 psi at 2 BPM. RD test equipment. PU 4" HT-40 drill pipe from pipe shed. POH w/ drill pipe and rack back in derrick. PU BHA # 9 w/6-3/4" tri-cone bit and 1.69 deg. ShortPak motor assy. Orient and shallow test MWD equipment. PU 4" drill pipe from pipe shed and RIH. PU 4" drill pipe and continue in hole to pluglES cementer at 9599'. Drill plug, ES cementer at 40 rpm, 250 gpm, 10K on bit. PU every 3" to clear rubber from bit. RIH w/ 6 3/4" bit picking up singles from pipe shed. Tag and. drill on plug fragment several times. RU and test casing to 3500 psi and chart for 30 mins. RD casing test. 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. Displace well to 8.4 ppg. Flo-Pro mud system. Cut and slip drilling line. Service top drive. Drill out shoe at 12010'. Drill f/12010' to 12030'. Condition mud 8.4 ppg. in and out. 285 gpm, 1700 psi, 45 rpm, 6K tq. on. 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. 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. 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. 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 J, Operations Summary Report Legal Well Name: Z-46 Common Well Name: Z-46 Spud Date: 11/17/2005 Event Name: REENTER+COMPLETE Start: 12/13/200 End: 1/11/2006 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 1/9/2006 Rig Name: NABOBS 7ES Rig Number: 7ES i , , , I Date ;From - To Nours Task ,Code ; NPT , Phase Description of Operations 112/29/2005 ~ 10:00 - 11:00 1.001 DRILL ~ N ~ DFAL ~ PROD1 11:00 - 12:00 1.00 DRILL P 12:00 - 15:00 3.00 DRILL N 15:00 - 16:00 1.00 DRILL N 16:00 - 21:00 5.00 DRILL N 21:00 - 21:30 0.50 DRILL N 21:30 - 00:00 ~ 2.50 1 DRILL P 112/30/2005 100:00 - 12:00. 12.001 DRILL I P 12:00 - 00:00 I 12.001 DRILL I P 112/31/2005 100:00 - 01:00 I 1.001 DRILL I P 01:00 - 01:15 01:15 - 02:00 02:00 - 02:15 02:15 - 02:30 02:30 -06:00 06:00 - 07:30 07:30 - 09:30 09:30 - 14:00 14:00 - 14:30 14:30 - 16:30 16:30 - 21:00 21:00 - 21:30 21:30 - 23:00 23:00 - 00:00 0.25 DRILL P 0.75 DRILL P 0.25 DRILL P 0.25 DRILL P 3.50 DRILL P 1.50 DRILL P 2.00 DRILL P 4.50 DRILL P 0.50 DRILL P 2.00 DRILL P 4.50 DRILL P 0.50 DRILL P 1.50 DRILL P 1.00 DRILL P PROD1 WAIT PROD1 DFAL PROD1 DFAL PROD1 DFAL PROD1 PROD1 PROD1 PROD1 PROD1 PRODi PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 LD BHA. Surface Test MWD. OK. MWD checked out ok in shop. Circ. Sub washed out. BD stack. Function test BOPs. Service top drive. Condition mud, rig maintenance, mobilize bit and 7/8 3 stage AIM MM. PU BHA # 10--new 6-3/4" insert bit and 1.83 AIM motor. Orient tools. RIH to 12093'. 'I Wash down f/12093' to 12204'. Work bridge at 12154'. '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.lhr. Drilf 6 3/4" hole, slide and rotate (/12253' ft to 12608' ft. 325 GPM, 2150 psi on, 1930 psi oft, Tq. on 10K, Tq. off 9K, Up wt. 205K, SO wt. 135K, Rot wt. 155K, 60 RPM rotary + 172 motor = 232 rpm downhole. 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. Drill 6-314" hole, slide and rotate from 13018' to 13053'. 325 GPM, 2143 psi on, 2020 psi off, Tq. on 12K, Tq. off SK, Up wt. 215K, SO wt. 135K, Rot wt. 160K, 60 RPM rotary + 172 rpm motor = 232 rpm downhole. POH to 12860'. No swabbing. MW 8.5 ppg in and out. 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'. POH to 7-5/8" shoe at 12006'. No swabbing. Drop ball and rod and open Circ. Sub. Pump Safecarb 250 dry job. BD top drive. POH w/ 6 3/4" bit. Hole fill showing well static. LD BHA #10. Function test BOP. Clear floor. Load BHA in pipe shed. Spot Schlumberger wireline truck. RU wireline equipment. PU logging tools to floor. USIT log 7-5/8" casing 12006' to 4475'. RD Schlumberger wireline equipment. PU BHA # 11 w/ DSXI4GH+GJNV bit, 1.50 deg. AIM PDM. Ajust MM, change stab sleeve. RIH w/4" drill pipe stands. Function test MWD. Service top drive/rig. RIH f/12008' to 13050'. Tight spot at 12697'. Wash and ream f/12697' to 13050'. 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 Page 9 of 12' Operations Summary Report Legal Well Name: Z-46 Common W ell Name: Z-46 Spud Date: 11/17/2005 Event Nan-~ e: REENT ER~COP ~~IPLET E Star t: 12/13/2005 End: 1/11/2006 Contractor Name: NABOB S ALAS KA DR ILLING I Rig Release: 1/9/2006 Rig Name: NABOB S 7ES Rig Number: 7ES Date From - To j Hours - ~ . Task ~- Code NPT Phase I I Description of Operations _ 12/31/2005 23:00 - 00:00 1.00 i DRILL I P I 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. 1/1/2006 00:00 - 12:00 12.00 DRILL P ~ PROD1 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. 12:00 - 00:00 12.00 DRILL ~ P ~ j PROD1 Drill directionally w/BHA # 11 1.50deg AIM PDM and PDC bit j 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. I 165K, 80 RPM rotary + 81 rpm motor = 161 rpm downhole. No significant mud losses for 24 hr. period. i ADT for 24 Hours = 14.53, AST = 8.56, ART = 5.97. Footage = 1243'. ROP for 24 hrs. = 85.6'/hr. 1/2/2006 00:00 - 12:00 12.00 DRILL P PRODi 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. 12:00 - 00:00 12.00 DRILL P PROD1 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. = 9i.7'/hr. 1/3/2006 00:00 - 18:00 18.00 DRILL P PROD1 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. 18:00 - 19:30 1.50 DRILL P PROD1 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. 19:30 -00:00 4.50 DRILL P PROD1 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. 1/4/2006 00:00 - 03:00 3.00 DRILL P PROD1 Cont' POH Back reaming from 13933' to 12720', cont' pump out of hole to 7-5/8' shoe fg3 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 Well Name: Z-46 Spud Date: 11/17/2005 Event Name: REENTER+COMPLETE Start: 1?/13/2005 End: 1/11/2006 Contractor Name: NABOBS ALASKA DRILLING I Rig Release: 1/9/2006 Rig Name: NABOBS 7ES Rig Number: 7E5 I , ~ i ~ Date From - To ~ Hours ; Task ~ Code ~ NPT ~ Phase Description of 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 ~ 15026'. Fill pipe and orient motor high side and work by fault without rotation, wash and ream fault area and coot' 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 TQ. Hole unloaded at bottoms up. Spot 290 bbls new 8.4 ppg mud across open hole for liner running pill. Monitor well. Static. 10:30 - 16:00 5.50 DRILL P PROD1 Mud weight 8.4+ ppg in and out. 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 PRODi POH Standing back drill pipe. Monitor well C~ BHA 23:00 - 00:00 1.00 DRILL P PRODt 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 fUlbs opt. 09:00 - 10:30 1.50 CASE P RUNPRD MU Baker HMC Liner hanger / ZXP Liner top packer. RD 4-1/2" tubing equipment. Circulate 1 liner vo-ume 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 pert pill followed by 142 bbls Printed: 1/i 6/2006 11:50:75 AM N BP EXPLORATION Page 11 of 1'2'' Operations Summary Report 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 ~ ~ ! i, i ~ Date i From - To Hours ~ Task ~ Code ~ NPT Phase I Description of Operations 1/6/2006 X00:30 - 03:00 ~ 2.50 CEMT P i RUNPRD Hof 8.5 ppg flo-pro mud. l -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 j ~ packer set. 03:00 -04:30 1.50 CEMT P RUNPRD CBU until hole cleaned up of ChemNet ~ 10 bpm. 1870 psi. i 30 bbls cement returns seen at surface. 04:30 - 07:00 2.50 CASE P j RUNPRD Displace well to 8.5 ppg sea water in and out. 07:00 - 12:00 5.00 CASE P i I RUNPRD POH with liner running tool. 12:00 - 12:15 0.25 CASE P ~ RUNPRD LD and inspect liner running tool. 12:15 - 13:15 1.00 BOPSU P 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. 13:15 - 16:00 2.75 PERFO P OTHCMP RIH PU 2.5" 4 SPF 2506 Power Jet Omega Guns. 1077" 16:00 - 22:00 6.00 PERFO P OTHCMP Change out handling equipment to 2-7/8" and RIH PU 122 Jts 2-7/8" PAC DP. 22:00 - 22:30 0.50 PERFO P OTHCMP Change out handling equipment to 4" and MU XO's 22:30 - 00:00 1.50 PERFO P OTHCMP RIH with TCP Guns on 4" DP 1R/2006 00:00 - 03:00 3.04 PERFO P OTHCMP Cont` RIH w! 2.5" TCP Guns on 4" DP 03:00 - 03:30 0.50 PERFO P OTHCMP Tag 4.5" landing collar ~ 16,632' and place guns on depth. Perf Interval Top shot ~ 15,612' Bottom ~ 16,630'. 03:30 -04:00 0.50 PERFO P OTHCMP PJSM wf 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. 04:00 - 05:00 1.00 PERFO P 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 05:00 - 10:00 5.00 PERFO P OTHCMP POH Laying down 237 Jts 4" drill pipe 1 xi . 10:00 - 10:30 0.50 PERFO P OTHCMP RIH w/ 14 stands from derrick. 10:30 - 14:30 4.00 PERFO P OTHCMP POH Laying down remainder of 4" # 15.7 & # 14.0 drill pipe 1x1. 14:30 - 15:00 0.50 PERFO P OTHCMP RU 2-7/8" handling equipment 15:00 - 19:00 4.00 PERFO P OTHCMP POH Laying down 122 jts. 2-7/8" PAC drill pipe. 19:00 - 19:30 0.50 PERFO P OTHCMP PJSM w/ Schlumberger TCP & Rig Crews on laying down 2-1/2" guns. 19:30 - 22:00 2.50 PERFO P OTHCMP LD 2-112" Perf guns. All shots fired. Function Test BOPE. 22:00 - 22:30 0.50 PERFO P OTHCMP RD handling tools. Clean and clear rig floor of vendors tools. 22:30 - 23:00 0.50 BOPSU P RUNCMP Pull wear bushing and make dummy landing run with tubing hanger. 23:00 - 00:00 1.00 BUNCO RUNCMP RU 3-1/2" Chrome tubing equipment. 24 hr. Fluid Loss 63 bbls. Printed: 1/16/2006 11:50:15 AM f 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: 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 I ! i ~ ~ I Date Frorn - To ~; Hours ~ Task ;Code NPT ~ Phase Description of Operations 11/8/2006 ; 00:00 - 01:30 1.50! BUNCO 01:30 - 02:30 I 1.001 RU 02:30 - 00:00 I 21.50 11 /9/2006 i 00:00 - 03:30 ~ 3.50 03:30 - 04:30 I 1.00 04:30 - 05:30 I 1.00 05:30 - 06:00 0.50 R 06:00 - 07:00 1.00 R 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 I 1.001 WHSURIP 21:00-22:00 1.00 WHSURIP 22:00 - 23:00 1.00 WHSUR P 23:00 - 00:00 I 1.00 I WHSUR I P RUNCMP I Cont' RU 3-1/2" Chrome tubing tools. RU Halliburton I-Wire jspool 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 Tum connections w/ 2900 fUlbs. Install I-Wire calmps on every joint. 303 jts ran. i 24 Hr. Fluid Loss = 38 bbls. RUNCMP Cont' RIH with 3-1l2" 13Cr-80 completion assembly. Torque Turn connections w/ 2900 fUlbs. Install I-Wire damps 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 C~ 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 upon 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: 7/16/2006 11:50:15 AM L~, r ~, Z-46 Survev Resort Report Date: 13-Dec-05 Client: BP Exploration Alaska Field: Prudhoe Bay Unit - WOA Structure /Slot: Z-PAD / Z-46 Well: Z-46 Borehole: Z-46 UWVAPI#: 500292328000 Survey Name /Date: Z-46 / Decempber 13, 2005 Tort /AHD / DDI / ERD ratio: 264.045° / 12489.64 ft / 6.763 / 1.387 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° 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: 24.446° Total Field Strength: 57580.352 nT Magnetic Dip: 80.829° Declination Date: November 30, 2005 Magnetic Declination Model: BGGM 2005 North Reference: True North Total Corr Mag North •> True North: +24.446° Local Coordinates Referenced To: Well Head Comments Measured Inclination Azimuth Sub-Sea TVD TVD Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft ft ft ft k k de 100 ft ftUS ftUS li I t U.UU U.UU U.UV -25"L.tfV U.UV U.UU U.UU U.VV U.UV U.VU U.UU 5ybylUU.U6 byy/3/.52f IV /V 1 / b1.174/ W 74y 11 :iZ.:ilb 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 14911 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 11 4 1021.46 27.01 170.55 905.81 988.61 19627 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 1153.58 291.29 291.92 291.36 -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 28282 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 2159.99 57.53 166.10 1672.83 1755.63 1010.56 1011.32 1010.56 -987.95 212.57 2.27 5958115.11 599963.22 N 70 17 41.931 W 149 11 26.120 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 SurveyEditor Ver SP 1.0 Bld( doc4Ox_56) Z-46~Z-46~Z-46~Z-46 Generated 2/22J2OO6 3:34 PM Page 1 of 5 4 Comments Measured Inclination Azimuth Sub-Sea ND ND Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure tt de de ft ft ft ft ft ft ft de 100 ft ftUS ftUS 2348 .04 60.35 163.80 1770.54 1853.34 1170.95 1171.97 1171.00 -1142.94 254 .81 2.14 5957960.71 2442 .85 5$.27 161.44 1818.93 1901.73 1252.11 1253.50 1252. 25 -1220.74 279 .14 3.06 5957883.24 2539 .06 59.16 164.45 1868.90 1951.70 1334.01 1335.71 1334. 25 -1299.33 303 .24 2.83 5957804.99 2634 .17 60.68 164.15 1916.57 1999.37 1416.14 1418,01 1416. 47 -1378.56 325 .51 1.62 5957726.07 2729 .92 62.75 164.51 1961.94 2044.74 1500.28 1502.32 1500. 71 -1459.74 348 .28 2.19 5957645.20 2823 .02 62.49 164.36 2004.75 2087.55 1582.80 1585.00 1583. 33 -1539.38 370 .47 0.31 5957565.87 2917 .78 62.59 164.63 2048.45 2131.25 1666.73 1669.08 1667. 36 -1620.40 392 .94 0.27 5957485.16 3011 .99 62.68 164.85 2091.75 2174.55 1750.27 1752.75 1751. 00 -1701.12 414 .96 0.23 5957404.75 3106 .26 62.13 166.44 2135.42 2218.22 1833.74 1836.29 1834. 54 -1782.05 435 .68 1.60 5957324.11 3201 .98 60.76 167.93 2181.18 2263.98 1917.80 1920.36 1918. 60 -1864.03 454 .33 1.98 5957242.40 3296.21 60.52 168.62 2227.38 2310.18 1999.93 2002.49 2000.68 -1944.44 471.02 0.69 5957162.22 3389.95 60.34 168.43 2273.64 2356.44 2081.45 2084.02 2082.15 -2024.34 487.24 0.26 5957082.55 3485.81 60.15 168.81 2321.21 2404.01 2164.67 2167.24 2165.32 -2105.93 503.66 0.40 5957001.20 3581.23 59.74 169.09 2369.00 2451.80 2247.25 2249.83 2247.84 -2186.98 519.49 0.50 5956920.36 3675.85 61.63 168.38 2415.33 2498.13 2329.74 2332.33 2330.28 -2267.89 535.61 2.10 5956839.68 3771.30 61.71 168.24 2460.62 2543.42 2413.75 2416.35 2414.27 -2350.17 552.64 0.15 5956757.65 3866.46 61.49 168.10 2505.89 2588.69 2497.46 2500.06 2497.95 -2432.10 569.80 0.26 5956675.96 3962.40 59.57 167.64 2553.08 2635.88 2580.98 2583.58 2581.46 -2513.75 587.35 2.04 5956594.55 4057.67 61.28 167.95 2600.10 2682.90 2663.84 2666.43 2664.30 -2594.74 604.86 1.82 5956513.81 4151.71 60.74 167.35 2645.68 2728.48 2746.09 2748.69 2746.55 -2675.09 622.45 0.80 5956433.71 4246.22 61.16 167.09 2691.57 2774.37 2828.71 2831.31 2829.17 -2755.66 640.73 0.51 5956353.39 4340.89 60.93 167.09 2737.40 2820.20 2911.53 2914.15 2912.01 -2836.41 659.24 0.24 5956272.91 4421.11 60.83 166.38 2776.44 2859.24 2981.60 2984.23 2982.09 -2904.61 675.32 0.78 5956204.93 4534.81 59.30 166.45 2833.18 2915.98 3080.09 3082.76 3080.61 -3000.39 698.46 1.35 5956109.48 4630.77 60.42 166.53 2881.36 2964.16 3163.05 3165.74 3163.59 -3081.08 717.85 1.17 5956029.06 4724.77 61.55 167.12 2926.95 3009.75 3245.23 3247.94 3245.80 -3161.11 736.58 1.32 5955949.29 4820.27 62.52 167.20 2971.74 3054.54 3329.57 3332.29 3330.14 -3243.35 755.32 1.02 5955867.31 4913.24 63.23 168.03 3014.12 3096.92 3412.31 3415.03 3412.88 -3324,17 773.07 1.10 5955786.74 5009.01 62.00 168.26 3058.17 3140.97 3497.35 3500.07 3497.89 -3407.39 790.54 1.30 5955703.77 5102.94 60.54 168.52 3103.32 3186.12 3579.71 3582.43 3580.23 -3488.07 807.12 1.57 5955623.32 5198.17 61.49 169.64 3149.47 3232.27 3662.99 3665.73 3663.48 -3569.86 822.89 1.43 5955541.76 5291.93 62.32 169.08 3193.63 3276.43 3745.68 3748.45 3746.12 -3651.15 838.17 1.03 5955460.68 5386.64 61.23 169.50 3238.42 3321.22 3829.10 3831.89 3829.51 -3733.14 853.67 1.22 5955378.91 5479.57 60.45 169.75 3283.70 3366.50 3910.22 3913.04 3910.58 -3812.97 868.29 0.87 5955299.30 5573.59 60.24 169.00 3330.22 3413.02 3991,90 3994.75 3992.23 -3893.27 883.35 0.73 5955219.21 5667.48 59.98 168.74 3377.01 3459.81 4073.29 4076.15 4073.60 -3973.14 899.07 0.37 5955139.56 5764.69 60.66 169.78 3425.14 3507.94 4157.72 4160.61 4158.00 -4056.12 914.80 1.16 5955056.81 5858.96 61.20 170.07 3470.94 3553.74 4240.07. 4243.00 4240.31 -4137.24 929.22 0.63 5954975.89 5954.37 61.65 170.66 3516.58 3599.38 4323.78 4326.79 4323.98 -4219.85 943.24 0.72 5954893.48 6048.32 60.58 170.66 3561.96 3644.76 4405.95 4409.05 4406.11 -4301.02 956.59 1.14 5954812.51 6150.03 60.20 171.04 3612.22 3695.02 4494.26 4497.48 4494.39 -4388.32 970.65 0.50 5954725.41 6245.60 60.14 170.84 3659.76 3742.56 4577.06 4580.38 4577.15 -4470.19 983.71 0.19 5954643.72 600007.51 N 7017 40.406 W 149 1 i 24.889 600032.87 N 70 17 39.641 W 149 11 24.180 600058.01 N 70 17 38.868 W 149 11 23.477 600081.33 N 70 17 38.089 W 149 11 22.828 600105.17 N 70 17 37.291 W 149 11 22.165 600128.41 N 70 17 36.507 W 149 11 21.518 600151.96 N 70 17 35.711 W 149 11 20.863 600175.04 N 70 17 34.917 W 149 11 20.222 600196.83 N 70 17 34.121 W 149 11 19.618 600216.57 N 70 17 33.314 W 149 11 075 600234.32 N 70 17 32.524 W 149 1 8 600251.60 N 70 17 31.738 W 149 11 18.116 600269.10 N 70 17 30.935 W 149 11 17.638 600286.00 N 70 17 30.138 W 149 11 17.176 600303.19 N 70 17 29.342 W 149 11 16.707 600321.31 N 70 17 28.533 W 149 11 16.211 600339.55 N 70 17 27.727 W 149 11 15.711 600358.18 N 70 17 26.924 W 149 11 15.200 600376.76 N 70 17 26.128 W 149 11 14.690 600395.42 N 70 17 25.338 W 149 11 14.177 600414.76 N 70 17 24.545 W 149 11 13.645 600434.34 N 70 17 23.751 W 149 11 13.106 600451.32 N 70 17 23.080 W 149 11 12.637 600475.73 N 70 17 22.138 W 149 11 11.963 600496.18 N 70 17 21.345 W 149 11 11.399 600515.98 N 70 17 20.557 W 149 11 10.853 600535.81 N 70 17 19.749 W 149 11 10.307 600554.62 N 7017 18.954 W 149 0 600573.19 N 70 17 18.135 W 149 2 600590.84 N 70 17 17.342 W 149 11 .799 600607.70 N 70 17 16.537 W 149 11 8.339 600624.05 N 7017 15.738 W 14911 7.895 600640.64 N 70 17 14.931 W 149 11 7.443 600656.31 N 70 17 14.146 W 149 11 7.018 600672.44 N 70 17 13.357 W 149 11 6.579 600689.21 N 7017 i 2.571 W 14911 6.121 600706.04 N 70 17 11.755 W 149 11 5.663 600721.53 N 70 17 10.957 W 149 11 5.244 600736.65 N 70 17 10.145 W 149 11 4.835 600751.07 N 70 17 9.346 W 149 11 4.447 600766.29 N 70 17 8.488 W 149 11 4.037 600780.43 N 70 17 7.683 W 149 1 i 3.657 SurveyEditor Ver SP 1.0 Bld( doc4Ox_56) Z-46~Z-46~Z-46~Z-46 Generated 2/22/2006 3:34 PM Page 2 of 5 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 tt tt tt ft ft tt de 100 ft ftUS ftUS (i:i4Z.btf 6y.5y 1[iy.yfi 3/Utt.44 :i/yl.'14 4tidU.k35 4fiti4.lti 4tibU.yG -455G.i3y yy/.tiy U.y/ by545ti1.L'L bUU/y5.51 N /U 1 / ti.tSfiy VV 14y 11 :S.LbU 6435.59 59.53 169.47 3755.57 3838.37 4741.00 4744.44 4741.06 -4631.79 1012.01 0.46 5954482.53 600810.87 N 70 17 6.093 W 149 11 2.833 6529.81 60.66 168.56 3802.54 3885.34 4822.66 4826.12 4822.71 -4711.96 1027.58 1.46 5954402.57 600827.50 N 70 17 5.305 W 149 11 2.380 6625.42 61.19 i 67.94 3849.00 3931.80 4906.22 4909.68 4906.27 -4793.77 1044.59 0.79 5954321.00 600845.60 N 70 17 4.500 W 149 11 1.885 6721.26 60.89 167.10 3895.41 3978.21 4990.07 4993.53 4990.12 -4875.65 1062.71 0.83 5954239.39 600864.80 N 70 17 3.695 W 149 11 1.357 6816.44 61.33 166.19 3941.39 4024.19 5073.39 5076.87 5073.44 -4956.73 1081.96 0.96 5954158.58 600885.13 N 70 17 2.897 W 149 11 0.797 6910.50 61.63 165.93 3986.30 4069.10 5155.99 5159.51 5156.05 -5036.94 1101.87 0.40 5954078.64 600906.10 N 70 17 2.108 W 149 11 0217 7005.66 60.86 166.19 4032.08 4114.88 5239.37 5242.94 5239.45 -5117.91 1121.97 0.84 5953997.96 600927.27 N 70 17 1.312 W 149 10 59.632 7099.66 60.13 167.15 4078.38 4161.18 5321.15 5324.75 5321.24 -5197.51 1140.84 1.18 5953918.62 600947.18 N 70 17 0.529 W 149 10 59.083 7194.28 61. i 4 166.75 4124.78 4207.58 5403.60 5407.21 5403.70 -5277.84 1159.46 1.13 5953838.55 600966.87 N 70 16 59.739 W 149 1 1 7287.36 61.92 167.69 4169.15 4251.95 5485.42 5489.03 5485.52 -5357.64 1177.55 1.22 5953759.01 600986.02 N 70 16 58.954 W 149 1 4 7384.48 61.96 16721 4214.83 4297.63 5571.12 5574.74 5571.22 -5441.29 1196.18 0.44 5953675.61 601005.75 N 70 16 58.131 W 149 1 2 7477.32 60.71 166.22 4259.37 4342.17 5652.56 5656.19 5652.67 -5520.57 1214.89 1.64 5953596.60 601025.51 N 70 16 57.352 W 149 10 56.927 7572.44 59.96 166.48 4306.44 4389.24 5735.18 5738.85 5735.30 -5600.89 1234.40 0.82 5953516.55 601046.08 N 70 16 56.562 W 149 10 56.360 7666.48 59.40 166.15 4353.92 4436.72 5816.32 5820.02 5816.46 -5679.76 1253.60 0.67 5953437.95 601066.33 N 70 16 55.786 W 149 10 55.801 7758.68 59.20 166.05 4400.99 4483.79 5895.56 5899.30 5895.71 -5756.72 1272.65 0.24 5953361.26 601086.39 N 70 16 55.029 W 149 10 55.246 7852.97 59.18 167.18 4449.29 4532.09 5976.52 5980.28 5976.68 -5835.50 1291.39 1.03 5953282.74 601106.18 N 70 16 54.254 W 149 10 54.701 7948.61 60.02 167.92 4497.68 4580.48 6059.00 6062.77 6059.17 -5916.05 1309.17 1.10 5953202.44 601125.03 N 70 16 53.462 W 149 10 54.183 8043.75 60.53 168.25 4544.86 4627.66 6141.62 6145.39 6141.79 -5996.89 1326.23 0.61 5953121.84 601143.15 N 70 16 52.667 W 149 10 53.687 8138.76 59.88 168.79 4592.07 4674.87 6224.07 6227.84 6224.23 -6077.69 1342.64 0.84 5953041.27 601160.63 N 70 16 51.872 W 149 10 53209 8232.69 58.93 168.40 4639.87 4722.67 6304.92 6308.70 6305.07 -6156.95 1358.63 1.07 5952962.24 601177.67 N 70 16 51.093 W 149 10 52.744 8328.61 59.74 168.46 4688.79 4771.59 6387.42 6391.20 6387.56 -6237.78 1375.18 0.85 5952881.65 601195.29 N 70 16 50.298 W 149 10 52.262 8424.08 60.41 168.17 4736.42 4819.22 6470.16 6473.94 6470.30 -6318.80 1391.94 0.75 5952800.86 601213.12 N 70 16 49.501 W 149 10 51.775 8519.60 60.38 168.23 4783.61 4866.41 6553.21 6556.99 6553.34 -6400.10 1408.92 0.06 5952719.80 601231.18 N 70 16 48.701 W 149 10 51.280 8613.78 60.68 168.38 4829.94 4912.74 6635.20 6638.99 6635.33 -6480.39 1425.54 0.35 5952639.75 601248.86 N 70 16 47.912 W 149 10 50.797 8708.46 60.65 168.16 4876.33 4959.13 6717.74 6721.53 6717.86 -6561.20 1442.32 0.21 5952559.17 601266.71 N 70 16 47.117 W 149 10 50,309 8804.39 59.67 168.55 4924.06 5006.86 6800.95 6804.74 6801.07 -6642.70 1459.12 1.08 5952477.91 601284.58 N 70 16 46.315 W 149 10 49.820 8899.06 59.81 168.85 4971.77 5054.57 6882.71 6886.51 6882.82 -6722.89 1475.14 0.31 5952397.95 601301.67 N 70 16 45.527 W 149 10 49.354 8993.19 60.22 169.03 5018.81 5101.61 6964.23 6968.04 6964.33 -6802.90 1490.78 0.47 5952318.15 601318.37 N 70 16 44.740 W 149 1 9 9087.29 59.46 169.39 5066.09 5148.89 7045.57 7049.40 7045.66 -6882.83 1506.01 0.87 5952238.45 601334.66 N 70 16 43.954 W 149 10 .455 9181.46 59.10 170.59 5114.20 5197.00 7126.47 7130.36 7126.55 -6962.55 1520.08 1.16 5952158.93 601349.79 N 70 16 43.169 W 149 10 48.046 9273.82 59.06 169.48 5161.66 5244.46 7205.65 7209.59 7205.72 -7040.58 1533.79 1.03 5952081.09 601364.53 N 70 16 42.402 W 149 10 47.647 9368.87 59.37 169.34 5210.30 5293.10 7287.28 7291.25 7287.34 -7120.85 1548.80 0.35 5952001.04 601380.60 N 70 16 41.613 W 149 10 47.211 9462.27 60.09 169.28 5257.38 5340.18 7367.92 7371.91 7367.97 -7200.1 t 1563.77 0.77 5951921.98 601396.61 N 70 16 40.833 W 149 10 46.775 9557.23 60.27 168.92 5304.61 5387.41 7450.30 7454.30 7450.34 -7281.01 1579.34 0.38 5951841.30 601413.26 N 70 16 40.037 W 149 10 46.322 9652.06 60.16 167.72 5351.71 5434.51 7532.59 7536.60 7532.63 -7361.61 1596.00 1.10 5951760.94 601430.99 N 70 16 39.245 W 149 10 45.837 9747.60 60.03 166.39 5399.35 5482.15 7615.40 7619.42 7615.44 -7442.32 1614.56 1.21 5951680.49 601450.61 N 70 16 38.451 W 149 10 45.298 9840.23 59.93 166.51 5445.69 5528.49 7695.58 7699.62 7695.63 -7520.29 1633.35 0.16 5951602.78 601470.43 N 70 16 37.684 W 149 10 44.751 9935.43 59.85 166.12 5493.45 5576.25 7777.90 7781.98 7777.95 -7600.31 1652.83 0.36 5951523.04 601490.97 N 70 16 36.897 W 149 10 44.184 10030.23 59.26 166.14 5541.48 5624.28 7859.58 7863.70 7859.65 -7679.66 1672.42 0.62 5951443.97 601511.61 N 70 16 36.116 W 149 10 43.614 10124.96 59.42 166.16 5589.79 5672.59 7941.03 7945.19 7941.11 -7758.77 1691.93 0.17 5951365.13 601532.17 N 70 16 35.338 W 149 10 43.047 10219.74 59.73 166.31 5637.79 5720.59 8022.72 8026.92 8022.81 -7838.15 1711.38 0.35 5951286.02 601552.66 N 70 16 34.558 W 149 10 42.481 10315.18 59.69 166.19 5685.93 5768.73 8105.10 8109.33 8105.19 -7918.20 1730.96 0.12 5951206.24 601573.31 N 70 16 33.770 W 149 10 41.911 SurveyEditor Ver SP 1.0 Bld( doc40x_56) Z-46~Z-46~Z-46~Z-46 Generated 2/22/2006 3:34 PM Page 3 of 5 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 10408.86 10502.86 10598.78 10691.25 10785.99 10881.28 10975.06 11070.32 11163.70 11258.68 11352.84 11446.63 11540.31 11636.45 11730.81 11827.22 11921.88 12014.69 12109.68 12204.30 12298.48 12393.74 12488.78 12585.78 12680.00 12774.09 12869.59 12964.61 13059.35 13154.39 13249.28 13344.62 13439.04 13533.15 13627.06 59.81 60.18 60.30 60.66 61.07 61.39 61.00 60.55 59.74 59.54 59.72 59.35 58.54 57.90 59.45 60.94 60.80 61.21 62.37 61.86 58.57 56.35 55.07 54.11 54.18 51.58 48.47 45.91 43.59 44.84 45.97 45.45 44.50 43.55 45.18 166.31 166.31 166.22 166.33 166.78 166.53 166.55 167.00 168.16 168.33 167.89 167.75 167.84 168.14 168.32 168.02 167.51 167.15 166.69 166.72 167.43 167.68 168.97 169.94 170.45 170.65 171.19 169.66 168.81 168.17 167.25 167.14 167.07 168.33 169.71 5733.12 5780.13 5827.74 5873.30 5919.43 5965.29 6010.48 6056.99 6103.47 6151.48 6199.08 6246.64 6294.96 6345.59 6394.65 6442.57 6488.65 6533.64 6578.54 6622.79 6669.57 6720.81 6774.35 6830.55 6885.74 6942.52 7003.87 7068.44 7135.72 7203.83 7270.45 7337.03 7403.82 7471.49 7538.63 5815.92 8185.99 5862.93 8267.35 5910.54 8350.59 5956.10 8431.02 6002.23 8513.75 6048.09 8597.25 6093.28 8679.40 6139.79 8762.52 6186.27 8843.50 6234.28 8925.46 6281.88 9006.69 6329.44 9087.54 6377.76 9167.79 6428.39 9249.51 6477.45 9330.12 6525.37 9413.77 6571.45 9496.46 6616.44 9577.63 6661.34 9661.32 6705.59 9744.93 6752.37 9826.65 6803.61 9906.95 6857.15 9985.46 6913.35 10064.49 6968.54 10140.80 7025.32 10215.74 7086.67 10288.82 7151.24 10358.45 7218.52 10425.12 7286.63 10491.40 7353.25 10558.96 7419.83 10627.20 7486.62 10693.93 7554.29 10759.33 7621.43 10824.98 8190.25 8186.09 -7996.81 1750.20 0.17 5951127.91 601593.58 N 70 16 32. 997 W 149 10 41.351 8271.66 8267.47 -8075:90 1769.46 0.39 5951049.09 601613.90 N 70 16 32. 219 W 149 10 40.791 8354.93 8350.72 -8156.79 1789.23 0.15 5950968.48 601634.74 N 70 16 31. 424 W 14910 40.216 8435.39 8431.16 -8234.95 1808.33 0.40 5950890.57 601654.86 N 70 16 30. 655 W 149 10 39.661 8518.14 8513.90 -8315.44 1827.57 0.60 5950810.36 601675.17 N 70 16 29. 863 W 149 10 39.101 8601.67 8597.42 -8396.71 1846.85 8683.85 8679.58 -8476.63 1865.97 8766.98 8762.70 -8557.56 1884.99 8847.97 8843.69 -8636.65 1902.41 8929.92 8925.64 -8716.88 1919.11 9011.16 9006.87 -8796.38 1935.85 9092.00 9087.71 -8875.40 1952.90 9172.25 9167.97 -8953.84 1969.87 9253.98 9249.69 -9033.78 1986.88 9334.58 9330.29 -9112.68 2003.32 9418.24 9413.94 -9194.56 9500.93 9496.63 -9275.37 9582.10 9577.80 -9354.57 9665.81 9661.50 -9436.10 9749.44 9745.12 -9517.49 9831.17 9826.85 -9597.15 9911.47 9907.15 -9675.56 9989.99 9985.66 -9752.45 10069.04 10064.67 -9830.17 10145.41 10140.96 -9905.42 10220.43 10215.88 -9979.42 10293.60 10288.94 -10051.68 10363.30 10358.56 -10120.41 10430.00 10425.22 -10185.93 10496.27 10491.49 -10250.87 10563.84 10559.06 -10316.89 10632.08 10627.30 -10383.44 10698.82 10694.03 -10448.49 10764.22 10759.43 -10512.39 10829.88 10825.08 -10576.85 13723. 04 45.47 169. 78 7606.11 7688. 91 10893. 20 10898.13 1089328 -10644.01 13739. 20 45.37 169. 73 7617.45 7700. 25 10904. 70 10909. 64 10904. 79 -10655.33 13832. 97 45.63 170. 68 7683.18 7765. 98 10971. 53 10976. 52 10971. 60 -10721.24 13928. 22 45.12 170. 73 7750.09 7832. 89 11039. 24 11044. 32 11039. 31 -10788.14 14022. 99 44.43 170. 76 7817.36 7900. 16 11105. 91 11111. 06 11105. 96 -10854.02 14117. 78 44.10 170. 48 7885.24 7968. 04 11172. 00 11177. 23 11172. 04 -10919.30 14212. 71 45.20 169. 06 7952.78 8035. 58 11238. 68 11243. 94 11238. 71 -10984.94 2020.47 2037.99 2055.80 2074.74 2093.98 2112.26 2129.57 2145.47 2159.94 2172.94 2185.26 2196.82 2208.39 2220.84 2234.07 2248.46 2263.58 2278.47 2292.41 2304.91 2317.06 2319.10 2330.48 2341.43 2352.17 2362.95 2374.80 0.41 5950729.36 601695.52 N 70 16 29.064 W 149 10 38.540 0.42 5950649.71 601715.71 N 70 16 28.278 W 149 10 37.984 0.63 5950569.05 601735.80 N 70 16 27.482 W 149 10 37.430 1.38 5950490.20 601754.26 N 70 16 26.704 W 149 10 36.924 0.26 5950410.20 601772.02 N 70 16 25.915 W 149 10 3 438 0.45 5950330.94 601789.81 N 70 16 25.133 W 149 1 t~2 0.41 5950252.16 601807.91 N 70 16 24.356 W 149 10 35.456 0.87 5950173.96 601825.92 N 70 16 23.584 W 149 10 34.962 0.72 5950094.27 601843.98 N 70 16 22.798 W 149 10 34.468 1.65 5950015.59 601861.47 N 70 16 22.022 W 149 10 33.990 1.57 5949933.96 601879.70 N 70 16 21.217 W 149 10 33.491 0.49 5949853.39 601898.29 N 70 16 20.422 W 149 10 32.981 0.56 5949774.44 601917.15 N 70 16 19.643 W 149 10 32.464 1.29 5949693.18 601937.17 N 70 16 18.841 W 149 10 31.913 0.54 5949612.05 601957.48 N 70 16 18.040 W 149 10 31.353 3.55 5949532.66 601976.82 N 70 16 17.257 W 149 10 30.822 2.34 5949454.49 601995.17 N 70 16 16.486 W 149 10 30.318 1.75 5949377.82 602012.08 N 70 16 15.729 W 149 10 29.856 1.28 5949300.31 602027.58 N 70 16 14.965 W 149 10 29.436 0.44 5949225.24 602041.58 N 70 16 14.225 W 149 10 29.058 2.77 5949151.42 602054.88 N 70 16 13.497 W 149 10 28.700 3.29 5949079.33 602067,39 N 70 16 12.786 W 149 10 28.364 2.94 5949010.77 602079.88 N 70 16 12.110 W 149 10 7 2.53 5948945.42 602093.19 N 70 1611.466 W 149 1 6 1.40 5948880.67 60210728 N 70 16 10.827 W 149 10 81 1.38 5948814.85 602122.54 N 70 16 10.178 W 149 10 26.863 0.55 5948748.52 602138.55 N 70 16 9.523 W 149 10 26.423 1.01 5948683.67 602154.30 N 70 16 8.884 W 149 10 25.990 1.37 5948619.97 602169.08 N 70 16 8.255 W 149 10 25.585 2.02 5948555.69 602182.43 N 70 16 7.621 W 149 10 25.222 0.31 5948488.70 602195.47 N 70 16 6.961 W 149 10 24.869 0.66 5948477.41 602197.67 N 70 16 6.849 W 149 10 24.809 0.77 5948411.66 602209.92 N 70 16 6201 W 149 10 24.479 0.54 5948344.92 602221.75 N 70 16 5.543 W 149 10 24.161 0.73 5948279.19 602233.36 N 70 16 4.895 W 149 10 23.849 0.40 5948214.07 602245.01 N 70 16 4.253 W 149 10 23.536 1.56 5948148.59 602257.73 N 70 16 3.607 W 149 10 23.191 SunreyEditor Ver SP 1.0 Bld( doc40x_56) Z-46~Z-46~Z-46~Z-46 Generated 2/22/2006 3:34 PM Page 4 of 5 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 it ft ft de 100 ft ftUS ftUS 143urs.34 14403.18 14498.54 14592.80 14688.07 14782.74 14877.18 14971.02 15066.46 15164.05 15226.82 15295.49 15326.77 40.64 1by.Ul 25U7y.yV tS1UZ./V 113Ub.RS 1131Z.V0 113Ub.i51 -11V01.P31 L3tll.(b V.4b 0y4tlVL51.y1 bUCL/1.0/ IV /V lb Z.yOV VY 14`J lV LL.i510 45.07 168.63 8086.54 8169.34 11374.25 11379.53 11374.28 -11118.01 2400.84 0.67 5948015.90 602285.53 N 70 16 2.298 W 149 10 22.434 43.22 168.12 8154.97 8237.77 11440.66 i 1445.94 11440.69 -11183.06 2414.22 1.98 5947951.03 602299.77 N 70 16 1.659 W 149 10 22.046 41.85 167.83 8224.42 8307. 22 11504 .38 11509. 66 11504. 41 -11245.39 2427 .49 1.47 594788$.90 42.81 166.85 8294.86 8377. 66 11568 .53 11573. 82 11568. 56 -11307.98 2441 .56 1.22 5947826.50 45.59 166.41 8362.72 8445. 52 11634 .50 11639. 81 11634. 54 -11372.18 2456 .82 2.95 5947762.51 46.45 167.86 8428.30 8511. 10 11702 .45 11707. 76 11702. 49 -11438.43 2471 .95 1.43 5947696.48 45.42 169.97 8493.57 8576. 37 11769 .86 11775. 19 11769. 89 -11504.59 2484 .92 1.95 5947630.50 45.23 169.91 8560.67 8643. 47 11837 .69 11843. 06 11837. 72 -11571.41 2496 .78 0.20 5947563.85 44.67 169.63 8629.74 8712. 54 11906 .60 11912. 00 11906. 62 -11639.26 2509 .02 0.61 5947496.17 46.00 168.44 8673.86 8756. 66 11951 .23 11956. 64 11951. 25 -11683.09 2517 .52 2.51 5947452.47 47.15 154.94 8721.18 8803. 98 12000 .58 12006. 41 12000. 61 -11730.21 2533 .17 14.36 5947405.57 48.74 167.94 8742.18 8824. 98 12023 .56 12029. 59 12023. 60 -11752.14 2540 .50 31.24 5947383.73 602313.87 602328.76 602344.88 602360.88 602374.72 602387.46 602400.61 602409.68 602425.96 602433.58 602439.03 602444.38 602450.73 602457.09 602462.32 602468.50 602474.74 602479.39 602485.68 602491.30 602497.75 602504.73 602512.16 602521.06 602536.41 N 70 16 1.046 W 149 10 21.660 N 70 16 0.430 W 149 10 21.251 N 70 15 59.799 W 149 10 20.807 N 7015 59.147 W 149 10 20.368 N 70 15 58.496 W 149 10 19.991 N 70 15 57.839 W 149 10 19.646 N 70 15 57.172 W 149 10 91 N 70 15 56.741 W 149 14 N 70 15 56.277 W 149 1 9 N 7015 56.061 W 1491018.376 N 70 15 55.830 W 149 10 18.226 N 70 15 55.605 W 149 10 18.079 N 70 15 55.332 W 149 10 17.906 N 70 15 55.046 W 149 10 17.732 N 70 15 54.803 W 149 10 17.590 N 70 15 54.528 W 149 10 17.421 N 70 15 54.220 W 149 10 17.252 N 70 15 53.974 W 149 10 17.126 N 70 15 53.670 W 149 10 16.955 N 70 15 53.366 W 149 10 16.804 N 70 15 53.069 W 149 1016.628 N 70 15 52.768 W 149 10 16.437 N 70 15 52.462 W 149 10 16.233 N 70 15 52.161 W 149 10 15.986 N 70 15 51.641 W 149 10 15.560 15358.13 51.49 167.39 8762.29 8845.09 12047.62 12053.65 12047.66 -11775.65 2545.64 8.87 5947360.30 15387.50 54.28 167.70 8780.01 8862.81 12071.04 12077.07 12071.08 -11798.52 2550.69 9.54 5947337.50 15421.84 57.31 167.96 8799.31 8882.11 12099.44 12105.46 12099.48 -11826.28 2556.68 8.85 5947309.83 15456.40 60.94 168.79 8817.04 8899.84 12129.09 12135.12 12129.13 -11855.33 2562.65 10.70 5947280.86 15484.93 63.27 168.78 8830.39 8913.19 12154.30 12160.33 12154.34 -11880.06 2567.55 8.17 5947256.20 15516.66 65.39 167.81 8844.13 8926.93 12182.90 12188.93 12182.94 -11908.06 2573.35 723 5947228.28 15551.37 67.77 171.06 8857.93 8940.73 12214.73 12220.78 12214.77 -11939.36 2579.19 10.99 5947197.06 15578.56 69.99 169.35 8867.73 8950.53 12240.07 12246.14 12240.11 -11964.35 2583.50 10.05 5947172.13 15611.74 72.66 169.06 8878.35 8961.15 12271.50 12277.57 12271.53 -11995.23 2589.39 8.09 5947141.34 15644.35 76.51 171.83 8887.02 8969.82 12302.89 12309.00 12302.92 -12026.22 2594.60 14.37 5947110.42 15675.89 78.90 165.55 8893.74 8976.54 12333.69 12339.81 12333.72 -12056.42 2600.65 20.88 5947080.31 15707.70 79.36 170.13 8899.75 8982.55 12364.92 12371.05 12364.95 -12086.95 2607.22 1421 5947049.87 15740.19 79.92 164.49 8905.59 8988.39 12396.86 12403.01 12396.89 -12118.11 261424 17.16 5947018.80 Last MWD+IFR+MS 15772.41 80.73 164.51 8911.01 8993.81 12428.57 12434.77 12428.60 -12148.72 2622.73 2.51 5946988.32 TD (Projected } 15828.00 80.73 164.51 8919.96 9002.76 12483.33 12489.64 12483.37 -12201.59 2637.38 0.00 5946935.65 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 mull-station analysis and correction applied in post-pro cessing. Assumes a BHA sag correction is applied to enhance inclination accuracy. } Legal Descri lion: Northing (Y) [ftUS] Eastin g (X) [ftUS] Surface : 4296 FSL 2940 FEL S19 T11 N R12E UM 5959100.06 599737.58 BHL : 2654 FSL 350 FEL S31 Ti 1 N R12E UM 5946935.65 602536.41 lr~ u SurveyEditor Ver SP 1.0 Bld( doc40x_56) Z-46~Z-46~Z-46~Z-46 Generated 2/22/2006 3:34 PM Page 5 of 5 WELLHEAD - FMC KB-ELEV = 82.5' BF. a.EV = 54' KOP = 4750 Max Angle = 95 @ 14,800' Datum MD = Datum TV D = U Z-46A ~ Proposed 2675' H 3-1/2" HES X NIPPLE, ~ _ 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 4-1/2" ADPFLANGE= 11"X4-1/16" 4,475' 10-3l4" CSG, 45.5#, L-80 BTGM, NJ = 9.950" GAS Lei' MANDRELS TOP 7-5/8" csG sru6 4575' HE5 7-5/8" EZSV 4650' ST MO 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 QMY BK-5 3-112" TBG, 9.2#, 13CR-80, Vam Top, 1 11843' 0.0087 bpf, ~ = 2.992" 11710' 3-1/2" HES X NIPPLE, ~ = 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 11830' 3-1l2" HES X N~PLE, ID = 2.813 11841' 3-112" X 4-1/2" XO 11845' 4-1/2" WLEG, ID=3.958" HES 7-5/8" QSV 15098' 7-518" CSG, 29.7#, L-80 BTGM, 15293' 0.04591 bpf, ID = 6.75" PBTD 15828' I PBTD 1 ~r~ 0.01554 bpf, ID = 4.00" I 16719' f DATE REV BY COMME]JfS DATE REV BY COMMENTS 12/15/05 STG Original Completion 01/09/06 LV Actual Minimum ID = 2.813" @ 2677' 3-1/2" HES X NIPPLE PERFORATION SUMMARY REF LOG: ANGLE AT TOP PERF: Note: SQE SPF INTERVAL Opn/Sqz DATE 2.5 4 15600-16380 Open 01/07!06 2.5 4 16500-16630 Open 01!07!06 11838' BAKER HMC LINER HANG62, ZXPpkr w/ TBS 12010' 7-5/8" CSG, 29.7#, L-80 BTGM, 0.04591 bpf, ID = 6.75" PRUDHOE BAY UNR WELL: Z-46A PERMff No: API No: 50-029-23280-01 SEC 19, T11 N, R12E, 983' FNL, 2940' FEL BP 6cploration (Alaska) s SCHLUMBERGER Survey report Client .................... BP Exploration (Alaska) Inc. Field ..................... Prudhoe Bay - WOA Well ...................... Z-46 API number ................ 50-029-23280-00 Engineer .................. I. Hernandez RIG :...................... Nabors 7ES STATE :.................... Alaska ----- Survey calculation methods------------- Method for positions.....: Minimum curvature Method for DLS............ Mason & Taylor ----- Depth reference ---- Permanent datum........... Depth reference........... GL above permanent.......: KB above permanent.......: DF above permanent.......: ------------------ Mean Sea Level Driller's Pipe Tally 54.40 ft N/A Top Drive 82.80 ft ----- Vertical section origin---------------- Latitude (+N/S-).......... 0.00 ft Departure (+E/W-)......... 0.00 ft ----- Platform reference point--------------- Latitude (+N1S-}.......... -999.25 ft Departure (+E/W-)......... -999.25 ft Azimuth from Vsect Origin to target: 167.95 degrees N C ~, r ~f, [(c)2005 IDEAL ID10_2C_Ol] -~ 13-Dec-2005 03:16:20 Page 1 of 7 Spud date ................. 17-Nov-05 Last survey date..........: 13-Dec-05 Total accepted surveys...: 180 MD of first survey........ 0.00 ft MD of last survey........: 15828.00 ft ----- Geomagnetic data ---------------------- Magnetic model...........: BGGM version 2005 Magnetic date ............. 16-Nov-2005 Magnetic field strength..: 1151.60 HCNT Magnetic dec (+E/W-).....: 24.46 degrees Magnetic dip .............. 80.83 degrees ----- MWD Reference Reference Reference Tolerance Tolerance Tolerance survey Reference G ............... H ............... Dip ............. of G............ of H............ of Dip.......... Criteria --------- 1002.68 meal 1151.60 HCNT 80.83 degrees (+/-) 2.50 meal (+/-} 6.00 HCNT (+/-) 0.45 degrees ----- Corrections -------------------- Magnetic dec (+EJW-).....: 24.46 degrees Grid convergence (+E/W-).: 0.00 degrees Total az corr (+E/W-)....: 24.46 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 13-Dec-2005 03:16:20 Page 2 of 7 --- --- 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) ----- ------ ----- -- -- - 1 - 0.00 - 0.00 167.69 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 - - Tie-In 2 97.00 0.25 45.68 97.00 97.00 -0.11 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 0.09 -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 1.62 -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 6.07 -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 18.12 -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 33.54 -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 54.06 -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 82.44 -80.74 16.64 82.44 168.36 3.88 BP_ MWD+IFR+MS 10 830.75 21.97 168.37 95.72 815.59 116.24 -113.88 23.30 116.24 168.44 2.70 BP MWD+IFR+MS 11 925.21 25.15 169.39 94.46 902.16 153.98 -150.93 30.56 153.99 168.55 3.39 BP_ MWD+IFR+MS 12 1021.46 27.01 170.55 96.25 988.61 196.27 -192.59 37.91 196.29 168.86 2.00 BP_ MWD+IFR+MS 13 1115.45 29.71 170.10 93.99 1071.31 240.87 -236.60 45.42 240.92 169.13 2.88 BP_ MWD+IFR+MS 14 1211.97 33.32 169.60 96.52 1153.58 291.29 -286.25 54.33 291.36 169.25 3.75 BP_ MWD+IFR+MS 15 1308.40 37.10 169.20 96.43 1232.35 346.86 -340.89 64.56 346.95 169.28 3.93 BP MWD+IFR+MS 16 1402.14 41.83 168.21 93.74 1304.70 406.42 -399.29 76.25 406.51 169.19 5.09 BP_ MWD+IFR+MS 17 1496.89 45.13 167.90 94.75 1373.44 471.60 -463.07 89.75 471.69 169.03 3.49 BP_ MWD+IFR+MS 18 1591.96 48.61 167.27 95.07 1438.43 540.97 -530.82 104.67 541.04 168.84 3.69 BP_ MWD+IFR+MS 19 1685.09 50.59 166.56 93.13 1498.79 611.88 -599.89 120.74 611.92 168.62 2.20 BP_ MWD+IFR+MS 20 1781.67 54.25 166.77 96.58 1557.68 688.39 -674.36 138.38 688.41 168.40 3.79 BP MWD+IFR+MS 21 1876.60 58.36 166.72 94.93 1610.33 767.33 -751.22 156.49 767.34 168.23 4.33 BP MWD+IFR+MS 22 1972.23 59.92 166.76 95.63 1659.38 849.40 -831.12 175.32 849.41 168.09 1.63 BP_ MWD+IFR+MS 23 2063.29 59.63 166.85 91.06 1705.22 928.07 -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 1010.56 -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 1089.29 -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 1170.95 -1142.94 254.81 1171.00 . 167.43 2.14 BP_ MWD+TFR+MS 27 2442.85 58.27 161.44 94.81 1901.73 1252.11 -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 1334.01 -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 1416.14 -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 1500.28 -1459.74 348.28 1500.71 166.58 2.19 BP MWD+IFR+MS [(c)2005 IDEAL ID10 2C O1] SCHLUMBERGER Survey Report 13- Dec-2005 03:16:20 Page 3 of 7 --- --- 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) ---- ------ 31 2823.02 62.49 164.36 93.10 2087.55 1582.80 -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 1666.73 -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 1750.27 -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 1833.74 -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 1917.80 -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 1999.93 -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 2081.45 -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 2164.67 -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 2247.25 -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 2329.74 -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 2413.75 -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 2497.46 -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 2580.98 -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 2663.84 -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 2746.09 -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 2828.71 -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 2911.53 -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 2981.60 -2904.61 675.32 2982.09 166.91 0.78 BP _MWD+IFR+MS 49 4534.81 59.30 166.45 113.70 2915.98 3080.09 -3000.39 698.46 3080.61 166.90 1.35 BP _MWD+IFR+MS 50 4630.77 60.42 166.53 95.96 2964.16 3163.05 -3081.07 717.85 3163.59 166.88 1.17 BP MWD+IFR+MS 51 4724.77 61.55 167.12 94.00 3009.75 3245.23 -3161.11 736.58 3245.79 166.88 1.32 BP MWD+IFR+MS 52 4820.27 62.52 167.20 95.50 3054.54 3329.57 -3243.35 755.32 3330.14 166.89 1.02 BP _ _MWD+IFR+MS 53 4913.24 63.23 168.03 92.97 3096.92 3412.31 -3324.17 773.07 3412.88 166.91 1.10 BP _MWD+IFR+MS 54 5009.01 62.00 168.26 95.77 3140.97 3497.35 -3407.39 790.54 3497.89 166.94 1.30 BP _MWD+IFR+MS 55 5102.94 60.54 168.52 93.93 3186.12 3579.71 -3488.07 807.12 3580.23 166.97 1.57 BP MWD+IFR+MS 56 5198.17 61.49 169.64 95.23 3232.27 3662.99 -3569.86 822.89 3663.48 167.02 1.43 BP _MWD+IFR+MS 57 5291.93 62.32 169.08 93.76 3276.43 3745.68 -3651.15 838.17 3746.12 167.07 1.03 BP _MWD+IFR+MS 58 5386.64 61.23 169.50 94.71 3321.22 3829.10 -3733.14 853.67 3829.51 167.12 1.22 BP MWD+IFR+MS 59 5479.57 60.45 169.75 92.93 3366.50 3910.22 -3812.97 868.29 3910.58 167.17 0.87 BP _ _MWD+IFR+MS 60 5573.59 60.24 169.00 94.02 3413.02 3991.90 -3893.27 883.35 3992.23 167.22 0.73 BP MWD+IFR+MS [(c)2005 IDEAL ID10 2C 01] SCHLUMBERGER Survey Report 13 -Dec-2005 03:16:20 Page 4 of 7 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 5667.48 59.98 168.74 93.89 3459.80 4073.29 -3973.14 899.07 4073.59 167.25 0.37 BP MWD+IFR+MS 62 5764.69 60.66 169.78 97.21 3507.94 4157.72 -4056.12 914.80 4158.00 167.29 1.16 BP _ MWD+IFR+MS 63 5858.96 61.20 170.07 94.27 3553.74 4240.07 -4137.24 929.22 4240.31 167.34 0.63 BP _ MWD+IFR+MS 64 5954.37 61.65 170.66 95.41 3599.38 4323.78 -4219.85 943.24 4323.98 167.40 0.72 BP _ MWD+IFR+MS 65 6048.32 60.58 170.66 93.95. 3644.76 4405.95 -4301.02 956.59 4406.11 167.46 1.14 BP _ MWD+IFR+MS 66 6150.03 60.20 171.04 101.71 3695.02 4494.26 -4388.32 970.65 4494.39 167.53 0.50 BP MWD+IFR+MS 67 6245.60 60.14 170.84 95.57 3742.55 4577.06 -4470.19 983.71 4577.15 167.59 0.19 BP _ _MWD+IFR+MS 68 6342.58 59.59 169.96 96.98 3791.24 4660.85 -4552.89 997.69 4660.92 167.64 0.97 BP • MWD+IFR+MS 69 6435.59 59.53 169.47 93.01 3838.37 4741.00 -4631.79 1012.01 4741.06 167.68 0.46 BP - MWD+IFR+MS 70 6529.81 60.66 168.56 94.22 3885.34 4822.66 -4711.96 1027.58 4822.71 167.70 1.46 BP _ MWD+IFR+MS 71 6625.42 61.19 167.94 95.61 3931.80 4906.22 -4793.77 1044.59 4906.26 167.71 0.79 BP MWD+IFR+MS 72 6721.26 60.89 167.10 95.84 3978.21 4990.07 -4875.65 1062.71 4990.12 167.70 0.83 BP _ MWD+IFR+MS 73 6816.44 61.33 166.19 95.18 4024.19 5073.38 -4956.73 1081.96 5073.44 167.69 0.96 BP _ MWD+IFR+MS 74 6910.50 61.63 165.93 94.06 4069.10 5155.99 -5036.94 1101.87 5156.05 167.66 0.40 BP _ MWD+IFR+MS 75 7005.66 60.86 166.19 95.16 4114.88 5239.36 -5117.91 1121.97 5239.44 167.63 0.84 BP MWD+IFR+MS 76 7099.66 60.13 167.15 94.00 4161.18 5321.15 -5197.51 1140.84 5321.24 167.62 1.18 BP MWD+IFR+MS 77 7194.28 61.14 166.75 94.62 4207.58 5403.60 -5277.84 1159.46 5403.70 167.61 1.13 BP _ MWD+IFR+MS 78 7287.36 61.92 167.69 93.08 4251.95 5485.42 -5357.63 1177.55 5485.52 167.60 1.22 BP _ MWD+IFR+MS 79 7384.48 61.96 167.21 97.12 4297.63 5571.12 -5441.29 1196.18 5571.22 167.60 0.44 BP _ MWD+IFR+MS 80 7477.32 60.71 166.22 92.84 4342.17 5652.56 -5520.57 1214.89 5652.67 167.59 1.64 BP _ MWD+IFR+MS 81 7572.44 59.96 166.48 95.12 4389.24 5735.18 -5600.89 1234.40 5735.30 167.57 0.82 BP MWD+IFR+MS 82 7666.48 59.40 166.15 94.04 4436.72 5816.32 -5679.76 1253.60 5816.46 167.55 0.67 BP _ MWD+IFR+MS 83 7758.68 59.20 166.05 92.20 4483.79 5895.56 -5756.72 1272.65 5895.71 167.53 0.24 BP _ MWD+IFR+MS 84 7852.97 59.18 167.18 94.29 4532.09 5976.52 -5835.50 1291.39 5976.68 167.52 1.03 BP _ MWD+IFR+MS 85 7948.61 60.02 167.92 95.64 4580.48 6059.00 -5916.05 1309.17 6059.17 167.52 1.10 BP MWD+IFR+MS 86 8043.75 60.53 168.25 95.14 4627.66 6141.62 -5996.89 1326.23 6141.79 167.53 0.61 BP MWD+IFR+MS 87 8138.76 59.88 168.79 95.01 4674.87 6224.07 -6077.69 1342.64 6224.23 167.54 0.84 BP _ MWD+IFR+MS 88 8232.69 58.93 168.40 93.93 4722.67 6304.92 -6156.95 1358.63 6305.07 167.56 1.07 BP _ MWD+IFR+MS 89 8328.61 59.74 168.46 95.92 4771.59 6387.42 -6237.78 1375.18 6387.56 167.57 0.85 BP MWD+IFR+MS 90 8424.08 60.41 168.17 95.47 . 4819.22 6470.16 -6318.80 1391.93 6470.30 167.58 0.75 BP _ MWD+IFR+MS [(c)2005 IDEAL ID10 2C Ol] SCHLUMBERGER Survey Report Seq Measured Incl Azimuth Course TVD # depth angle angle length depth - (ft) (deg) (deg) (ft) (ft) 91 8519.60 60.38 168.23 95.52 4866.41 92 8613.78 60.68 168.38 94.18 4912.74 93 8708.46 60.65 168.16 94.68 4959.13 94 8804.39 59.67 168.55 95.93 5006.86 95 8899.06 59.81 168.85 94.67 5054.57 96 8993.19 60.22 169.03 94.13 5101.61 97 9087.29 59.46 169.39 94.10 5148.89 98 9181.46 59.10 170.59 94.17 5197.00 99 9273.82 59.06 169.48 92.36 5244.45 100 9368.87 59.37 169.34 95.05 5293.10 101 9462.27 60.09 169.28 93.40 5340.18 102 9557.23 60.27 168.92 94.96 5387.40 103 9652.06 60.16 167.72 94.83 5434.51 104 9747.60 60.03 166.39 95.54 5482.15 105 9840.23 59.93 166.51 92.63 5528.49 106 9935.43 59.85 166.12 95.20 5576.25 107 10030.23 59.26 166.14 94.80 5624.28 108 10124.96 59.42 166.16 94.73 5672.59 109 10219.74 59.73 166.31 94.78 5720.59 110 10315.18 59.69 166.19 95.44 5768.73 111 10408.86 59.81 166.31 93.68 5815.92 112 10502.86 60.18 166.31 94.00 5862.93 113 10598.78 60.30 166.22 95.92 5910.54 114 10691.25 60.66 166.33 92.47 5956.10 115 10785.99 61.07 166.78 94.74 6002.23 116 10881.28 61.39 166.53 95.29 6048.09 117 10975.06 61.00 166.55 93.78 6093.27 118 11070.32 60.55 167.00 95.26 6139.79 119 11163.70 59.74 168.16 93.38 6186.27 120 11258.68 59.54 168.33 94.98 6234.28 13-Dec-2005 03:16:20 Page 5 of 7 Vertical Displ Displ Total At DLS Srvy Tool section +N/S- +E/W- displ Azim (deg/ tool Corr (ft) (ft) (ft) (ft) (deg) 100f) type (deg) 6553.21 -6400.10 1408.92 6553.34 167.58 0.06 BP MWD+IFR+MS 6635.20 -6480.39 1425.54 6635.33 167.59 0.35 BP _ MWD+IFR+MS 6717.74 -6561.20 1442.32 6717.86 167.60 0.21 BP _ _MWD+IFR+MS 6800.95 -6642.70 1459.12 6801.07 167.61 1.08 BP MWD+IFR+MS 6882.71 -6722.89 1475.14 6882.82 167.62 0.31 BP _ MWD+IFR+MS 6964.23 -6802.90 1490.78 6964.33 167.64 0.47 BP _MWD+IFR+MS 7045.57 -6882.83 1506.01 7045.66 167.66 0.87 BP MWD+IFR+MS 7126.47 -6962.55 1520.08 7126.55 167.68 1.16 BP _ MWD+IFR+MS 7205.65 -7040.58 1533.79 7205.72 167.71 1.03 BP _ _MWD+IFR+MS 7287.28 -7120.85 1548.80 7287.34 167.73 0.35 BP MWD+IFR+MS 7367.93 -7200.11 1563.76 7367.97 167.75 0.77 BP MWD+IFR+MS 7450.30 -7281.02 1579.34 7450.34 167.76 0.38 BP _ MWD+IFR+MS 7532.59 -7361.61 1596.00 7532.63 167.77 1.10 BP _ _MWD+IFR+MS 7615.40 -7442.32 1614.56 7615.44 167.76 1.21 BP MWD+IFR+MS 7695.58 -7520.29 1633.35 7695.63 167.75 0.16 BP _ MWD+IFR+MS 7777.90 -7600.31 1652.83 7777.95 167.73 0.36 BP MWD+IFR+MS 7859.58 -7679.66 1672.42 7859.65 167.71 0.62 BP _ _MWD+IFR+MS 7941.03 -7758.77 1691.93 7941.11 167.70 0.17 BP MWD+IFR+MS 8022.72 -7838.15 1711.38 8022.81 167.68 0.35 BP _ MWD+IFR+MS 8105.10 -7918.20 1730.96 8105.19 167.67 0.12 BP _ MWD+IFR+MS 8185.99 -7996.81 1750.20 8186.09 167.65 0.17 BP _MWD+IFR+MS 8267.35 -8075.90 1769.46 8267.47 167.64 0.39 BP MWD+IFR+MS 8350.59 -8156.79 1789.23 8350.72 167.63 0.15 BP _ MWD+IFR+MS 8431.02 -8234.95 1808.33 8431.16 167.61 0.40 BP _ MWD+IFR+MS 8513.75 -8315.44 1827.57 8513.90 167.60 0.60 BP _ MWD+IFR+MS 8597.25 -8396.71 1846.85 8597.42 167.60 0.41 BP MWD+IFR+MS 8679.40 -8476.63 1865.97 8679.58 167.59 0.42 BP _ MWD+IFR+MS 8762.52 -8557.56 1884.99 8762.71 167.58 0.63 BP _ MWD+IFR+MS 8843.50 -8636.65 1902.41 8843.69 167..58 1.38 BP _ MWD+IFR+MS 8925.46 -8716.88 1919.11 8925.64 167.58 0.26 BP _ MWD+IFR+MS • [(c)2005 IDEAL ID10 2C O1] SCHLUMBERGER Survey Report 13-Dec-2005 03:16:20 Page 6 of 7 --- --- 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) ---- ------ 121 11352.84 59.72 167.89 94.16 6281.88 -- 9006.70 -- -- -8796.38 ----- - 1935.85 ------- 9006.88 -------- 167.59 ----- 0.45 - BP ---- ------ MWD+IFR+MS 122 11446.63 59.35 167.75 93.79 6329.44 9087.54 -8875.40 1952.90 9087.71 167.59 0.41 BP _ MWD+IFR+MS 123 11540.31 58.54 167.84 93.68 6377.76 9167.79 -8953.84 1969.87 9167.97 167.59 0.87 BP _ MWD+IFR+MS 124 11636.45 57.90 168.14 96.14 6428.39 9249.52 -9033.78 1986.88 9249.69 167.60 0.72 BP _ MWD+IFR+MS 125 11730.81 59.45 168.32 94.36 6477.45 9330.12 -9112.68 2003.32 9330.29 167.60 1.65 BP _ MWD+IFR+MS 126 11827.22 60.94 168.02 96.41 6525.37 9413.77 -9194.56 2020.47 9413.94 167.61 1.57 BP MWD+IFR+MS 127 128 11921.88 12014.69 60.80 61.21 167.51 167.15 94.66 92.81 6571.45 6616.44 9496.46 9577.63 -9275.37 -9354.57 2037.99 2055.80 9496.63 9577.80 167.61 167.61 0.49 0.56 BP BP _ MWD+IFR+MS • MWD+IFR+MS 129 12109.68 62.37 166.69 94.99 6661.34 9661.32 -9436.10 2074.74 9661.50 167.60 1.29 BP - MWD+IFR+MS 130 12204.30 61.86 166.72 94.62 6705.59 9744.93 -9517.50 2093.98 9745.12 167.59 0.54 BP _ MWD+IFR+MS 131 12298.48 58.57 167.43 94.18 6752.37 132 12393.74 56.35 167.68 95.26 6803.60 133 12488.78 55.07 168.97 95.04 6857.15 134 12585.78 54.11 169.94 97.00 6913.35 135 12680.00 54.18 170.45 94.22 6968.54 136 12774.09 51.58 170.65 94.09 7025.32 137 12869.59 48.47 171.19 95.50 7086.67 138 12964.61 45.91 169.66 95.02 7151.24 139 13059.35 43.59 168.81 94.74 7218.51 140 13154.39 44.84 168.17 95.04 7286.63 141 13249.28 45.97 167.25 94.89 7353.25 142 13344.62 45.45 167.14 95.34 7419.83 143 13439.04 44.50 167.07 94.42 7486.62 144 13533.15 43.55 168.33 94.11 7554.29 145 13627.06 45.18 169.71 93.91 7621.42 146 13723.04 45.47 169.78 95.98 7688.91 147 13739.20 45.37 169.73 16.16 7700.25 148 13832.97 45.63 170.68 93.77 7765.97 149 13928.22 45.13 170.73 95.25 7832.88 150 14022.99 44.43 170.76 94.77 7900.15 9826.65 -9597.15 9906.95 -9675.56 9985..46 -9752.45 10064.49 -9830.17 10140.80 -9905.42 10215.74 -9979.42 10288.82 -10051.68 10358.45 -10120.41 10425.13 -10185.93 10491.40 -10250.87 10558.96 -10316.89 10627.20 -10383.44 10693.93 -10448.49 10759.33 -10512.39 10824.98 -10576.85 10893.20 -10644.01 10904.70 -10655.33 10971.53 -10721.24 11039.25 -10788.15 11105.92 -10854.03 2112.26 9826.85 2129.57 9907.15 2145.47 9985.66 2159.94 10064.67 2172.94 10140.96 2185.26 10215.88 2196.82 10288.94 2208.39 10358.56 2220.84 10425.22 2234.07 10491.49 2248.46 10559.06 2263.58 10627.30 2278.47 10694.03 2292.41 10759.43 2304.91 10825.08 2317.06 10893.29 2319.10 10904.79 2330.48 10971.61 2341.43 11039.31 2352.17 11105.98 167.59 167.59 167.59 167.61 167.63 167.65 167.67 167.69 167.70 167.71 167.71 167.70 167.70 167.70 167.71 167.72 167.72 167.74 167.75 167.77 3.55 2.34 1.75 1.28 0.44 2.77 3.29 2.94 2.53 1.40 1.38 0.55 1.01 1.37 2.02 0.31 0.66 0.77 0.53 0.74 BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP_MWD+IFR+MS BP MWD+IFR+MS C] [(c)2005 IDEAL ID10 2C 01] s a SCHLUMBERGER Survey Report 13-Dec-2005 03:16:20 Page 7 of 7 --- --- Seq -------- -------- Measured ------ ------ Incl ------- ------- Azimuth ------ ------ Course -------- -------- TVD -------- -------- Vertical -------- -------- Displ -------- -------- Displ -------- -------- Total ------- ------- At ----- ----- DLS ----- ------ ----- ------ Srvy Tool # depth angle angle length depth section +N/S- +EjW- displ Azim (deg/ tool Corr - --- --- (ft) -------- -------- (deg) ------ ------ (deg) ------- ------- (ft) ------ ------ (ft) -------- -------- (ft) -------- -------- (ft) -------- -------- (ft) -------- ----- -- (ft) -------- ----- - (deg) ------- ----- 100f) ----- - -type (deg) ----- ------ 151 14117.78 44.10 170.48 94.79 7968.03 11172.01 -10919.31 - 2362.95 - - 11172.06 -- 167.79 ---- 0.40 ----- ------ MWD+IFR+MS BP 152 14212.71 45.20 169.06 94.93 8035.56 11238.69 -10984.96 2374.80 11238.73 167.80 1.56 _ BP_MWD+IFR+MS 153 14308.34 45.64 169.01 95.63 8102.69 11306.79 -11051.83 2387.76 11306.82 167.81 0.46 BP MWD+IFR+MS 154 14403.18 45.07 168.63 94.84 8169.33 11374.26 -11118.02 2400.84 11374.29 167.81 0.67 _ BP MWD+IFR+MS 155 14498.54 43.22 168.12 95.36 8237.76 11440.67 -11183.07 2414.22 11440.70 167.82 1.98 BP MWD+IFR+MS 156 14592.80 41.84 167.83 94.26 8307.22 157 14688.07 42.81 166.85 95.27 8377.65 158 14782.74 45.59 166.41 94.67 8445.52 159 14877.18 46.45 167.86 94.44 8511.10 160 14971.02 45.42 169.97 93.84 8576.36 161 15066.46 45.24 169.91 95.44 8643.46 162 15164.05 44.67 169.63 97.59 8712.52 163 15226.82 46.00 168.44 62.77 8756.65 164 15295.49 47.15 154.94 68.67 8803.96 165 15326.77 48.74 167.94 31.28 8824.97 166 15358.13 51.49 167.39 31.36 8845.07 167 15387.50 54.28 167.70 29.37 8862.79 168 15421.84 57.31 167.96 34.34 8882.10 169 15456.40 60.94 168.79 34.56 8899.83 170 15484.93 63.27 168.78 28.53 8913.18 171 15516.66 65.39 167.81 31.73 8926.92 172 15551.37 67.77 171.06 34.71 8940.72 173 15578.56 69.99 169.35 27.19 8950.52 174 15611.74 72.66 169.06 33.18 8961.14 175 15644.35 76.51 171.83 32.61 8969.81 176 15675.89 78.90 165.55 31.54 8976.53 177 15707.70 79.36 170.13 31.81 8982.53 178 15740.19 79.92 164.49 32.49 8988.38 179 15772.41 80.73 164.51 32.22 8993.79 180 15828.00 80.73 164.51 55.59 9002.75 [(c)2005 IDEAL ID10 2C Ol] 11504.38 -11245.39 11568.53 -11307.98 11634.50 -11372.18 11702.45 -11438.43 11769.86 -11504.59 11837.69 -11571.42 11906.61 -11639.28 11951.24 -11683.10 12000.59 -11730.22 12023.57 -11752.16 12047.63 -11775.66 12071.05 -11798.53 12099.45 -11826.29 12129.11 -11855.34 12154.32 -11880.07 12182.91 -11908.07 12214.74 -11939.37 12240.08 -11964.36 12271.51 -11995.24 12302.90 -12026.23 12333.70 -12056.43 12364.93 -12086.96 12396.88 -12118.13 12428.58 -12148.73 12483.34 -12201.60 2427.49 11504.42 2441.56 11568.56 2456.82 11634.54 2471.95 11702.49 2484.92 11769.90 2496.78 11837.72 2509.02 11906.63 2517.52 11951.27 2533.17 12000.62 2540.50 12023.61 2545.64 12047.68 2550.69 12071.09 2556.68 12099.49 2562.65 12129.15 2567.55 12154.36 2573.36 12182.95 2579.19 12214.78 2583.50 12240.12 2589.39 12271.54 2594.60 12302.93 2600.65 12333.73 2607.22 12364.96 2614.24 12396.90 2622.73 12428.61 2637.38 12483.38 167.82 167.82 167.81 167.81 167.81 167.82 167.84 167.84 167.81 167.80 167.80 167.80 167.80 167.80 167.80 167.81 167.81 167.82 167.82 167.83 167.83 167.83 167.83 167.82 167.80 1.48 BP_MWD+IFR+MS 1.23 BP_MWD+IFR+MS 2.95 BP_MWD+IFR+MS 1.43 BP_MWD+IFR+MS 1.95 BP MWD+IFR+MS 0.19 BP_MWD+IFR+MS 0.62 BP_MWD+IFR+MS 2.51 BP_MWD+IFR+MS 14.36 BP_MWD+IFR+MS 31.24 BP MWD+IFR+MS 8.87 BP_MWD+IFR+MS 9.54 BP_MWD+IFR+MS 8.85 BP_MWD+IFR+MS 10.70 BP_MWD+IFR+MS 8.17 BP MWD+IFR+MS 7.23 BP_MWD+IFR+MS 10.99 BP_MWD+IFR+MS 10.05 BP_MWD+IFR+MS 8.09 BP_MWD+IFR+MS 14.37 BP MWD+IFR+MS • • 20.88 BP_MWD+IFR+MS 14.21 BP_MWD+IFR+MS 17.16 BP_MWD+IFR+MS 2.51 BP_MWD+IFR+MS 0.00 Projection to TD • Schlumberger Drilling & Measurements MWD/LWD Log Product Delivery Customer BP Exploration (Alaska) Inc. Dispatched To: Well No Z-46 ~C~ ' ~ ~ 1 Date Dispatched Installation/Rig Nabors 7ES Dispatched By: AOGCC -Librarian 29-Dec-05 Mauricio Perdomo Data No Of Prints No of Floppies Surveys 2 1 RE FIVE FE 1 4 2006 a0Y8 Cons• Received By: Please sign and return to: Drilling & Measurements LWD Division 2525 Gambell Street, Suite 400 Anchorage, Alaska 99501 nrosel Cc?slb.com Fax:907-561-8317 LWU Log Delivery V1.1, 10-02-03 ~, A ~ ;~' ~ ~ ~ ~~ ~ ~ ~ ~ ~; ~ ~ ~ ~ ~ , a; ~ .~ FRANK H. MURKOWSK/, GOVERNOR ~t 0it[~a7~ ~~ ~ ~ ~ 333 W. 7T" AVENUE, SUITE 100 C01~3ERQA'1`IUI1T CU1rII~'II$SIO1~T ~~~ ANCHORAGE, ALASKA 99501-3539 PHONE (907) 279-1433 Dave Wesley FAx (907) 27&7542 Senior Drilling Engineer BP Exploration (Alaska), Inc. P.O. Box 196612 Anchorage, AK 99519-6612 ate- ~ ~ I Re: PBU Z-46 Sundry Number: 305-387 Dear Mr. Wesley: Enclosed is the approved Application for Sundry Approval relating to the above referenced well. Please note the conditions of approval set out in the enclosed form. 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). As provided in AS 31.05.080, within 20 days after written notice of this decision, or such further time as the Commission grants for good cause shown, a person affected by it may file with the Commission an application for rehearing. A request for rehearing is considered timely if it is received by 4:30 PM on the 23rd day following the date of this letter, or the next working day if the 23rd day falls on a holiday or weekend. A person may not appeal a Commission decision to Superior Court unless rehearing has been requested. DATED this~~ay of December, 2005 Encl. Sincerelv, ~z.~t~ zo©s' STATE OF ALASKA ~ ~'~'~ ALASKA OIL AND GAS CONSERVATION COMMISSION APPLICATION FOR SUNDRY APPROVAL ~~~ ~ ~ ~~~ 20 AAC 25.280 Alaska OS{ & Gas Cons. Commission A ewr.w.wwn 1. Type of Request: ®Abandon ^ Suspend ^ Operation Shutdown ^ Perforate ^ Other ^ Alter Casing ^ Repair Well ^ Plug Perforations ^ Stimulate ^ Re-Enter Suspended Well ^ Change Approved Program ^ Pull Tubing ^ Perforate New Pool ^ Waiver ^ Time Extension 2. Operator Name: 4. Current Well Class: ,,, 5. Permit To Drill Number BP Exploration (Alaska) Inc. ®Development ^ Exploratory 205-151 3. Address: ^ Stratigraphic ^ Service 6. API Number: P.O. Box 196612, Anchorage, Alaska 99519-6612 50- 029-23280-00-00 r` 7. KB Elevation (ft): 82 9 9. Well Name and Number: PBU Z-46 ~ 8. Property Designation: 10. Field /Pool(s): ADL 047453 Prudhoe Bay Field / Prudhoe Bay Pool 11. PRESENT WELL CO NDITION;SUMMARY Total Depth MD (ft): Total Depth TVD (ft): Effective Depth MD (ft): Effective Depth TVD (ft): Plugs (measured): Junk (measured): 15828 9002 4650 2964 4650 & 15143 None Casin Len th Size MD TVD Burst Colla se tru ur I 108' 20" 108' 108' 1490 470 4446' 10-3/4° 4475' 2920' 5210 2480 15269' 7-5/8" i 5293' 8800' 6890 4790 Perforation Depth MD (ft): Perforation Depth ND (ft): Tubing Size: Tubing Grade: Tubing MD (ft): N/A WA N/A N/A N/A Packers and SSSV Type: N/A Packers and SSSV MD (ft): N/A 12. Attachments: 13. Well Class after proposed work: ~ ® Description Summary of Proposal ^ BOP Sketch ^ Exploratory ®Development ^ Service ® Detailed Operations Program 14. Estimated Date for 15. Well Status after proposed work: Commencing Operations: December 1 , 2005 ^ Oil ^ Gas ^ Plugged / ®Abandoned 16. Verbal Approval: Dat 12/12/2005 ^ WAG ^ GINJ ^ WINJ ^ WDSPL Commission Re resentative: Winton Aubert ~ 17. 1 hereby certify tha .the foregoing is true and correct to the best of my knowledge. Contact Shane Gagliardi, 564-5251 Printed Name a Wesley Title Senior Drilling Engineer Prepared By NamelNumbar. Si nature ~ Phone 564-5153 Date fz l~ ~S Terrie Hubble, 564-4628 Commission Use Only Sundry Number: `~ - ~~ / Conditions of approval: Notify Commission so that a representative may witness ^ Plug Integrity ^ BOP Test ^ Mechanical Integrity Test ^ Location Clearance Other: ~~Q~ ~ {7~C ~ 2 2005 SubsequentEo equ ed: ` - 4 O APPROVED BY '' ~ THE COMMISSION ~ ~ ~D Approved B COMMISSIONER Date ~?i Form 10-403 I~yy~ed /200 \_ nn ~~t'~> Submit In Duplicate • by c,,;~ To: Winton Aubert - AOGCC Date: December 15, 2005 From: Shane Gagliardi - BPXA GPB Rotary Drilling Subject: Z-46A Application for Sundry Approval - P&A for Sidetrack Operations Approval is requested for the proposed P&A of PBU well Z-46. This conventional well was drilled into an isolated fault block. The reservoir fluid was believed to be oil but was unknown. After setting intermediate casing and drilling the production hole section, the reservoir was found to i contain only water. Production casing was not run. The plan is to run a cement retainer to approximately 15,098' and and pump the open hole volume of cement through the retainer and leave 50' of cement on top of the retainer. Another cast iron bridge plug will be placed at 4,625' md. The 7-5/" intermediate casing will be cut Gc~ 4,575' and which is 100' and below the surface casing shoe. The 7-5/8" casing above the cut will be removed and a 17.0 ppg cement plug will be placed on top of the upper plug extending 200' and into the surface casing. Once the cement has gained sufficient compressive strength, the new Z-46A ~,- hole will be drilled the secondary TSGR target. The planned well then has a 4,000' production interval with approximately 3,800' in the Zone 4 sands. A solid 4-1/2" liner will be cemented in place throughout the production interval. Operations Summary Rig Operations: 1. MIRU Schlumberger Wireline unit. 2. Make GR/JB/CCL run to approx 5,000' md. 3. Run USIT from TOC to approx 6,071' (est TOC in 9-%e" x 7-g/8" annulus). ~ 4. Set Wireline CIBP C«~ 4,625'. RDMO Schlumberger. 5. PU 7 5/8" Baker mechanical casing cutter and 71H to 4,575' and make casing cut approx 100' and below 10-3/a" casing shoe. .--, hJ,(,,t¢- 6. Change over to 7 5/" rams and~t:` (3p~~ 7. ND tree and tack weld emerge ey slips to 7 5/8" casing. NU irze and test. 8. POOH and LD 7-5/s" casing. 9. TIH w/ 4" drill pipe and spot 17 ppg cement kick off plug on CIBP C 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/x" casing to 3,500 psi for 30 minutes. Record the test. 1 r~ out cement. Displace the well to 8.8 ppg LSND drilling fluid. 5 I ~ ' g° ~ 14. Drill approximately 20' new formation and perform a LOT. ~p~,~ Q„ ~, 15. Drill ahead, according to directional proposal, to 100' above the HRZ. 16. Increase mud weight, via spike fluid, to 11.0 ppg. Z-46 Application for Sundry • • 17. Drill according to directional plan to intermediate TD, approximately 5' and below the top of the Sag. Circulate bottoms up as necessary for sample collection to properly identify shale/siltstone cap. 18. Condition hole as necessary. POOH, UD all 5" drill pipe. 19. R/U, run, and cement the 7-s/", 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/" 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 $/8" 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-~h" production liner. Spot liner running pill on bottom. POOH, VD 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-%2", 4 spf, DPC perforating guns and 2 '/e" 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-$0, 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. Post-Riq Operations: 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-46 Application for Sundry ~' Z-46 Current 10-3/4" CSG, 45.5#, L-80, BTC ID = 9.950" 4475' HES 7-518" ¢SV 15143' .,- - -, ~~ = ', may. ~ ,s ~ ..> ~ #'`~ , ~~ 7-5/8" CSG, 29 .7#, L-80 BTGM, 0.04591 .~ - `'~ - 15294' bpf, ID = 6.75" . '~. =~ f. _ y` } ~~~ : - S.~ - J. f ~_ }} '~/`r f f - ~~:~ -! . ~ r+- -r. 6-3/4" HOLE 15828' WELLHEAD = FMC KB. ELE1J = 82.5' BF. ELEV..- 54' KOP = 400' Max Angle = Datum MD = 95 @ 16,629' Datum TV D = DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 10/10/05 STG Original Completion WELL: Z-46 PERMfr No: 50-029-23280 API No: 205-151 SEC 19, T11 N, R12E, 4297' FSL, 2940' FEL BP Exploration (Alaska) TREE = CNV 4-1116 5M WELLHEAD = FMC Gen 5 CSG HEAD = 11" 5M W/ 7" MANDREL HANGER & PACKOFF TBG SPOOL = 11" X 11" 5M TBG HANGER = 11" X 4-1/2" ADP FLANGE = 11" X 4-1/16" WELLHEAD = FMC KB. EL'El/ = 82.5' BF. ELEV = 54' KOP = 4750 Max Angle = 95 @ 14,800' Datum MD - Datum TV D = Z-46A ~ Proposed 4,475' 10-3/4" CSG, 45.5#, L-80 BTGM, ID = 9.950" GAS LIFT MANDRELS TOP 7-5/8" CSG STUB 447$' HES 7-5ra" ¢sv 4625' ST MD TVD DEV TYPE VLV LATCH PDR GATE 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, VamTop, 0.0087 bpf, ID = 2.992" 11762' 3-1/2" HES X NIPPLE, ID = 2.813" 11783' HES 3-112" SYMPHONY BHG w/ I-WIRE 11837' 7-5l8" x 4-1/2" BAKER S-3 PKR, ~ = 3.88" 11883' 3-1/2" HES X N~PLE, ID = 2.813" HES 7-5/8" ¢SV 15143' 7-5/8" CSG, 29.7#, L-80 BTGM, 15293' 0.04591 bpf, ID = 6.75° PBTD 15828' 4-1/2" LNR, 12.6#, 13CR-80, VamTop, I 0.01554 bof. ~ = 4.00" 11894' 3-112" X 4-1i2" XO 11894' BAKER HMC. LINER HANGER, ZXP pkr w / TBS f 7-5/8" CSG, 29.7#, L-80 BTGM, 0.04591 12044' bpf, ~ = 6.75" Minimum ID = 2.813" @ 2677' 3-1/2" HES X NIPPLE ~3-112" HES X NIPPLE, ID = 2.813' ~ PERFORATION SUMMARY REF LOG: ANGLE AT TOP PERF: Note: SIZE SPF INTERVAL OonlSaz DATE I 16409' I I 16495' I TREE = CM/ 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 4-1/2" ADP FLANGE = 11" X 4-1/16" DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNfr 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} • BP EXPLORATION Page 1 of 12 Operations Summary Report Legal Well Name: Z-46 Common W ell Name: Z-46 Spud Date: 11/17/2005 Event Nam e: DRILL+C OMPLE TE Start : 11/15/2005 End: 12/14/2005 Contractor Name: NABOB S ALASK A DRI LLING I Rig Release: Rig Name: NABOB S 7ES Rig Number: 7ES Date ~~ - -! From - To j - Hours ~I Task ~ _~ ' Code 1 NPT ~ I Phase ~ - Description of Operations i 11115!2005 08:00 - 12:00 - - 4.00 - - MOB - P - _ PRE _ _ - - -_-_- RID steam and electrical service for derrick down move. Prep rig to lay down derrick. Install jeep on pits complex. 12:00 - 15:30 3.50 MOB P PRE RID rig floor to lay down derrick & LD same. Move Shop, Satellite camp and pits complex to Z-pad. 15:30 - 20:00 4.50 MOB P PRE 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. 20:00 - 00:00 4.00 MOB P PRE Move rig from W-Pad to Z-Pad. i 1/16/2005 00:00 - 01:30 1.50 MOB P PRE Cont' move rig onto Z-pad and position same to raise the derrick. 01:30 - 02:30 1.00 RIGU P PRE PJSM and raise derrick and cattle chute, pin torque tube. R/D bridle lines and secure in derrick. MU kelly hose and standpipe. 02:30 - 05:00 2.50 RIGU P PRE Lay herculite around Z-46, stage well head equipment and 20" surface preventer in cellar area. 05:00 - 09;00 4.00 RIGU P PRE Spot sub over well and level same. Spot mud pits. Note: Rig accepted C~ 09:00 Hrs. 11/16/2005 09:00 - 12:00 3.00 RIGU P PRE RU service lines on rig, Start NU Diverter. 12:00 - 19:30 7.50 RIGU P PRE 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. 19:30 - 21:30 2.00 RIGU P PRE PU 5" drill pipe 1x1 building stands to drill surface 21:30 - 22:30 1.00 RIGU P PRE Function test diverter system, gas alarms. Function test witnessed by John Spaulding, AOGCC & Chris Clemens (WSL) 22:30 - 00:00 1.50 RIGU P PRE Cont' PU drill pipe and stand back same. 11!17!2005 00:00 - 02:00 2.00 RIGU P PRE Pick up remainder of 5" drill pipe and rack back. 02:00 - 03:30 1.50 RIGU P PRE Load pipe shed with HWDP, Steam boxes and SLM, PU and stand back 5" HWDP and jar stand. 03:30 - 04:00 0.50 RIGU P PRE PU BHA to rig floor and steam same. 04:00 - 05:30 1.50 DRILL P PRE MU 13 1/2" Bit, Motor and 1 stand HWDP 05:30 - 06:30 1.00 DRILL P PRE PJSM- RU Gyro Data Wire line unit and hang sheave in derrick. 06:30 - 07:30 1.00 DRILL P PRE Fill hole with mud and check circulating system for leaks. 07:30 - 08:30 1.00 DRILL P SURF Drill ice out of conductor pipe from 40' to 108' and continue to drill new hole from 108' to 124' 08:30 - 09:00 0.50 DRILL P SURF Stand back HWDP 09:00- ii:00 2.00 DRILL P SURF PU BHA, NM-LDC, NM-Stab, MWD, UBHO, NM-Stab, NM-LDC, XO, & orient same. 11:00 - 12:00 1.00 DRILL P SURF Run Gyro survey, use two different tools and tattle tail to verify tool accuracy. 12:00 - 19:00 7.00 DRILL P SURF Drill from 124' to 283' Printed: 12/15/2005 5:04:36 PM • BP EXPLORATION Operations Summary Report Page 2 of 12 Legal Well Name: Z -46 Common W ell Name: Z -46 Spud Date: 11/17/2005 Event Nam e: DRILL+C OMPLE TE Start : 11/15/2005 End: 12/14/2005 Contractor Name: NABOB S ALASK A DRI LLING I Rig Release: Rig Name: NABOB S 7ES Rig Number: 7ES Date From - To Hours Task '~ I Code NPT I Phase j 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. & R{H 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, TQ 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 TQ-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' 11/19/2005 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 RIH. 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 C~ 3460' Mud wt. cut from 9.6 to 8.6 ppg. Up wt. 128k, DN wt. 83k, RT wt. 98k TQ-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. 11/20/2005 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: 12/15/2005 5:04:36 PM ~J 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 ~j Task ~ Code ~~ NPT Start: Rig Release: Rig Number: Phase -- ~ L - 11/20/2005 19:30 - 20:00 0.50 CASE P SURF 20:00 - 00:00 4.00 CASE P SURF 11/21/2005 100:00 - 07:00 I 7.00 ~ CASE I P I SURF 07:00 - 07:30 0.501 CASE P I SURF 07:30 - 09:00 ~ 1.50 ~ CASE ~ P ~ SURF 09:00 - 13:30 I 4.501 CEMT I P I I SURF 13:30 - 16:30 I 3.001 CEMT I P I I SURF 16:30 - 19:30 I 3.001 DIVRTR I P I I SURF 19:30 - 21:00 ~ 1.50 ~ WHSUR ~ P ~ ~ SURF 21:00 - 00:00 3.00 BOPSU P SURF 11/22/2005 00:00 - 02:30 2.50 BOPSU P SURF 02:30 - 05:00 2.50 BOPSU P SURF 05:00 - 11:00 6.00 BOPSU N SFAL SURF 11:00 - 16:30 5.50 BOPSU P SURF 16:30 - 17:30 1.00 BOPSU P SURF 17:30 - 22:00 4.50 BOPSU P SURF 22:00 - 23:30 1.50 BOPSU P SURF 23:30 - 00:00 0.50 BOPSU P SURF 11/23/2005 00:00 - 06:30 6.50 DRILL P I INT1 11 /15/2005 7ES Page 3 of 12 Spud Date: 11 /17/2005 End: 12/14/2005 Description of Operations circulate through and check floats, Held. Cont' Run 10 3/4" casing, torque connections to 8,400 Wlbs. Install bow spring centralizers on first 1 ijoints. 49 jts ran. Run 10 3/4" casing to TD, torque connections to 8,400 ft/lbs. Starting pushing mud away @ 3,300 ft. 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. RD Franks fill up tool and blow down top drive. MU plug dropping cement head and RU lines. Stage pumps up to 7 bpm, 505 psi. Hold PJSM for cementing while conditioning mud. Up wt. 190k. DN wt. 90k. 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 Q 13:10 hrs. Reciprocate pipe until Lead Cement was up into the permafrost. LD cement head. Back out landing joint & LD same. Drain riser, flush cement out of diverter equipment and flow line. ND diverter system, wash cement and gravel out of 20" annular and knife valve. NU FMC Wellhead and test metal to metal seal to 1000 psi and hold for 10 min. Held. NU BOPE Cont' NU BOP and riser. 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. 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. 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. BD lines, RD test equipment and install wear bushing. PU and single in hole w/i 14 jts. of 5" drill pipe. POH standing back 5" drill pipe. PU and single in hole w/5" drill pipe. PU 5" drill pipe and single in hole. POH & rack in derrick. Printed: 12/15/2005 5:04:36 PM • BP EXPLORATION Page 4 of 12 Operations Summary Report Legal Well Name: Z-46 Common W ell Name: Z-46 Spud Date: 11!1712005 Event Nam e: DRILL+C OMPLE TE Start : 11/15/2005 End: 12/14/2005 Contractor Name: NABOB S ALASK A DRI LLING I Rig Release: Rig Name: NABOB S 7ES Rig Number: 7ES Date From - To ~ ~ Hours - - - Task ~ II L Code I L I NPT - I Phase I Description of Operations _ - _- _- _ - __ - 11/23/2005 06:30 - 10:30 4.00 DRILL P INT1 PU and RIH w/BSS BHA #3. Surface test MWD per Schlumberger. 10:30 - 14:00 3.50 DRILL P INTi PU and RIH w 5" drill pipe singles to 2616'. 14:00 - 14:30 0.50 DRILL P INTi CBU C~? 2616'. 430 gpm, 800 psi. BD top drive. 14:30 - 16:30 2.00 DRILL P INTi PU 5" drill pipe and continue RIH to 4221'. 16:30 - 18:00 1.50 DRILL P INT1 Slip and cut 95' of drilling line. Service rig and top drive. 18:00 - 19:00 1.00 DRILL P INT1 RU and test 10-3/4" surface casing to 3500 psi for 30 minutes. BD and RD test. 19:00 - 21:00 2.00 DRILL INTi Tag plugs/cement at 4389'. Drill plugs, float collar, and cement to 4472'. 400 gpm, 800 psi, 40 rpm, 10-15K tq. 21:00 - 22:00 1.00 DRILL P INT1 Displace hole to 8.8 ppg LSND mud. 22:00 - 22:30 0.50 DRILL P INTi Drill shoe at 4475' and 9-7/S" hole to 4507'. Torque irregular. Added 4 drums EP 776. Added MI Clean Screen for control of asphaltenes during Ugnu penetration. 22:30 - 23:30 1.00 DRILL P INT1 CBU 8.8 ppg LSND mud in and out. 23:30 - 00:00 0.50 DRILL P INTi 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. ADT = .56 hrs. 11/24/2005 00:00 - 00:30 0.50 EVAL P INTi RD test lines and BD kill line. 00:30 - 12:00 i 1.50 DRILL P INT1 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 calc. = 9.27, ECD act. = 9.95. Pump HI-Vis sweep at 6019'. No increase of cuttings. 12:00 - 20:00 8.00 DRILL P INTi 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 calc. = 9.47, ECD act. = 9.75. 20:00 - 21:30 1.50 DRILL P 1NT1 Change all shaker screens due to blinding in the Ugnu. 21:30 - 00:00 2.50 DRILL P INT1 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 calc. = 9.47, ECD act. = 9.75. ADT w/ RSS for 24 hrs = 11.9 hrs 11/25/2005 00:00 - 00:30 0.50 DRILL P INT1 Drill directionally w/RSS to 7250'. 00:30 - 00:45 0.25 DRILL P INT1 Shakers shut down wlelectrical 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. 00:45 - 06:00 5.25 DRILL P INTi 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 calc. = 9.46, ECD act. = 9.74. 06:00 - 00:00 18.00 DRILL P INT1 Drill directionally wlRSS 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 calc. = 9.48, ECD act. = 10.15. ADT f/24 hrs = 16.37, total footage = 2182'. 11/26/2005 00:00 - 06:00 6.00 DRILL P INT1 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 10-11 K, gpm 631, 2015 psi. ECD calc. = 9.56, ECD act. _ 10.06. Pump 30 bbls. 9.1 ppg Hi-Vis sweep around. Saw 50% Printed: 12/15/2005 5:04:36 PM C7 BP EXPLORATION Operations Summary Report Legal Well Name: Z-46 Common Well Name: Z-46 Event Name: DRILL+COMPLETE Start: Contractor Name: NABOBS ALASKA DRILLING f Rig Release: Rig Name: NABOBS 7ES Rig Number: Date j From - To Hours I Task Code i~ NPT I Phase - _ - _ _ I _ _ ! _ -- - 11!2612005 00:00 - 06:00 ~ 6.00 DRILL P INT1 06:00 - 16:00 10.00 DRILL P INTi 16:00 - 18:00 I 2.00 DRILL N DPRB INT1 18:00 - 21:30 I 3.501 DRILL I N f DPRB 1 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 16.00 DRILL P 22:00 - 00:00 11 /28/2005 (00:00 - 06:00 Page 5 of 12 Spud Date: 11/17/2005 11 /15/2005 End: 12/14/2005 7ES 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 pi{I, 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 = 1 i 5K, 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'Jhr. 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 INT1 07:00 - 07:30 0.50 DRILL P INTi 07:30 - 10:00 2.50 DRILL P INT1 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 INT1 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 INT1 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 PPg• POH. Mud wt. in and out 10.4 ppg. Pull over and some swabbing in Ugnu f/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: 12/15/2005 5:04:36 PM • 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: Rig Name: NABOBS 7ES Rig Number: 7ES Date ~ From - To !Hours , Task Code ~ NPT ! Phase ~ Description of Operations i 1/2812005 19:00 - 00:00 5.00 ~ DRiLL P ~NTi to well at 11701' prior to prognosed HRZ penetration depth of -12239'. 11/29/2005 100:00 - 06:00 I 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 5.501 DRILL I 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. INTi 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', EGD spiked to 15.0 ppg. Lost returns. No excessive torque or overpull. Backed off pumps to 120gpm, 650 psi. INTi 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 6i 5 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 INT1 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 fUhr. Mud loss to wellbore total = 40 bbls for 24 hrs. 13125'-13219' control drill 150'/hr to lower ECDs. 13219' partial returns, ROP 143 fVhr. 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 ft/hr., pump weighted sweep 604 gpm, 3130 psi. 13408' ROP dropped to 56 ft/hr. Sweep back wl25% increase across shakers. 13580' ROP 51 ft/hr, pump nut plug and screen clean 580 gpm, 3360 psi. 13597' ROP 51fUhr., plugged jet, pressure on bottom went from 3100 psi to 3400 psi. 13693' ROP 34 ft/hr, pump nut plug Printed: 12/15/2005 5:04:36 PM BP EXPLORATION Page 7 of 12 Operations Summary Report Legal Well Name: Z -46 Common W e11 Name: Z -46 Spud Date: 11/17/2005 Event Nam e: DRILL+COMPL ETE Start: 11/15/2005 End: 12/14/2005 Contractor Name: NABORS ALAS KA DRILLING I Rig Release: Rig Name: NABORS 7ES Rig Number: 7ES Date I ~ From - To ~ Hours ~'~ Task ~~ Code ~~~~ NPT ~ I Phase ~ Description of Operations - 11/30/2005 - --- 06:00 - 20:00 --_. ~ 14.00 DRILL _ - __ P - INT1 - 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 fUhr. Dropped back to 34 ft/hr. 20:00 - 21:00 1.00 DRILL P INT1 CBU. 582 gpm, 3380 psi, rotate 140 rpm. 21:00 - 21:30 0.50 DRILL P INT1 Monitor we11. 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 INTi 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 fine. 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 INTi 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 wlBHA #5. Shallow test MWD assembly. 02:00 - 05:30 3.50 DRILL P INTi RIH w/HWDP from derrick. PU and RIH w/102 jts. 5" drill pipe. 05:30 - 07:30 2.00 DRILL P INT1 RIH 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 INT1 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 {ow, 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 SchraderlUgnu 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 INTi RIH to 12951'. 07:00 - 08:00 1.00 DRILL P INTi MAD Pass Kuparuk f/12880' to 12700'. 300 ft.1hr., 250 gpm, 930 psi 50 rpm tq. 14K. 08:00 - 08:30 0.50 DRILL P INTi RIH to 13700'. Precaution wash down to 13789'. No fill. 08:30 - 21:45 13.25 DRILL P INTi Drill directionally w/RSS BHA # 5 fl13789' to 14657'. ECDs spike f/12.0 ppg to 13.4 ppg. Printed: 12/15/2005 5:04:36 PM C BP EXPLORATION Operations Summary Report Page 8 of 12 Legal Well Name: Z-46 Common Welj 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: Rig Name; NABOBS 7ES Rig Number: 7ES I I i i Date ~ From - To ~ Hours ~ Task Code ~ NPT ~ Phase ~ Description of Operations 12/3/2005 21:45 - 23:00 1.25 DRILL P INT1 CIRC, pump 35 bbls Hi-Vis sweep, CBU. Stage pumps up to 600 gpm, 3150 psi, 140 rpm, tq. off i7K. Saw 25% increase in cutting with sweep at shakers. 23:00 - 00:00 1.00 DRILL P INTi Drill directionally f/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 f8hr. Mud losses for 24 hrs = 513 bbls. Well breathing during connections. 12/4/2005 100:00 - 06:00 I 6.001 DRILL I P I I INT1 06:00 - 08:30 2.501 DRILL P INTi 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 INTi 14:45 - 16:45 2.00 DRILL P INT1 16:45 - 17:00 0.25 DRILL P INT1 17:00 - 18:30 1.50 DRILL P INTi 18:30 - 19:30 1.00 DRILL P INT1 19:30 - 00:00 4.50 DRILL P INTi 12/5/2005 100:00 - 01:30 I 1.501 DRILL I P I I INTi 01:30 - 12:00 I 10.501 DRILL I P I I INTi 12:00 - 15:00 3.00 DRILL P INT1 15:00 - 15:30 0.50 DRILL P INT1 15:30 - 18:30 3.00 DRILL P INT1 18:30 - 21:45 3.25 DRILL P INT1 21:45 - 22:15 0.50 BOPSU P INT1 22:15 - 00:00 1.75 BOPSU P INTi 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 f/15100' to 15260' and per geo CBU for samples, 600 gpm, 3340 psi. Drill f/15260' to i 5270' 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 # i41. RIH f/14025'to 15280'. Drill directionally f/15280' to 15292' and per geo CBU for samples at 600 gpm, 3340 psi. Drill directionally 815292' and per geo TD 9-7l8" 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 f16400' 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: 12/15/2005 5:04:36 PM • BP EXPLORATION Page 9 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: Rig Name: NABOBS 7ES Rig Number: 7ES i Date ~ From - To ~ Hours ~~ Task ~ Code NPT ~ Phase ~~ Description of Operations 12!6/2005 00:00 - 02:00 2.00 BOPSU P INT1 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 INTi 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 INT1 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/ 7-518" casing filling each joint, break circulation every 15 jts. on the fly. Slow running speed, ~ 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 @ 15294', Ran total 378 jts. 13:00 - 13:30 0.50 CASE P INTi 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 INT1 PJSM -Load head with bottom plug. Test lines to 4000. Clear water from lines through Tee and pump 50 bbls mud push @ 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 C~ 15.8 ppg. Drop top plug and kick out with !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 C~3 21:05 hrs. 15 to 20% returns during cement job. 21:30 - 00:00 2.50 CEMT P INT1 Shear open ES Cementer with 3500 psi. Circulate and condition mud @ 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 INTi PJSM -Pump 40 bbls CW-100. Pump 50 bbls mud push C 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 1800 psi to close ES cementer and hold pressure for 5 min. Bleed off pressure and comfirm that cementer closed. CIP @ 04:30 hrs. 100% returns during cement job. 04:30 - 05:00 0.50 CEMT P INT1 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 lest 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 INTi 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: 12/15/2005 5:04:36 PM BP EXPLORATION Page 10 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: Rig Name: NABOBS 7ES Rig Number: 7ES Date ~ From - To ~~ Hours ~~ Task ~~ Code ~ NPT ~~ Phase ~ Description of Operations 12/8/2005 11:30 - 12:00 0.50 BOPSU P INTi Service Top Drive. 12:00 - 13:30 1.50 BOPSU P INTi 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 /MWD / 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 PROD1 RIH picking up singles of drill pipe 1 x 1. tag ES cementer @ 9585' 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. 11:30 - 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 1.00 DRILL P PROD1 Slip and cut 60' of drilling line. 20:00 - 21:00 1.00 DRILL P PROD1 RIH picking up drill pipe 1 x 1 to 15090' 21:00 - 22:00 1.00 BOPSU P PRODi RU test equipment and pressure test 7-5l8" casing to 3500 psi and hold for 30 min. Held. RD test equipment. 22:00 - 23:00 1.00 DRILL P PRODi 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 15290'. 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 w/ 10% 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 PROD1 Drill remaining cement from 15290' and shoe at 15293' clean out rat hole to 15294' 03:30 - 04:00 0.50 DRILL P PRODi Drill new hole from 15294' to 15314' UP WT-195k, DN WT-145k, RT WT-155k, TO-7k on & 5k Off Printed: 12/15/2005 5:04:36 PM 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: Rig Name: NABOBS 7ES Rig Number: 7ES Date I, From - To it Hours ~; Task I Code ~ NPT I Phase j ~_ _ - 12/10/2005 03:30 - 04:00 0.50 DRILL P PROD1 04:00 - 04:30 0.50 DRILL P PROD1 04:30 - 05:30 1.00 DRILL P PROD1 05:30 - 12:00 I 6.501 DRILL I P 12:00 - 00:00 I 12.001 DRILL I P 12/1112005 100:00 - 12:00 I 12.001 DRILL I P 12:00 - 00:00 12.00 DRILL P 12/12/2005 00:00 - 12:00 12.00 DRILL P 12:00 - 16:00 4.00 DRILL P 16:00 - 17:30 1.50 DRILL P 17:30 - 18:00 0.50 DRILL P 18:00 - 18:30 0.50 DRILL P 18:30 - 00:00 5.50 DRILL P 12/1312005 00:00 - 02:00 02:00 - 03:00 03:00 - 03:30 03:30 - 04:00 2.00 DRILL P 1.00 DRILL P 0.50 DRILL P 0.50 STCTPL P 04:00 - 11:00 7.001 STCTPL I P PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PROD1 PRODi PROD1 PROD1 PROD1 Description of Operations Bttm., 280 GPM, 2800 PSI. off Bttm. 3000 PSI On Bttm. Circulate and condition mud. RU and perform FIT to 1 ippg EMW. 9.1ppg test mud weigt, 870 psi test pressure. 8800' TVD. RD test equipment and blow down lines. 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 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 PSl On Bttm. ART=O / AST=4.18 /ADT=4.18 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 ft/hr 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. 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 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 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, TO ON 11k, 330 GPM, 2875 psi. off Bttm. 3000 psi on Bttm. ART=1.68 !AST=1.22 /ADT=2.9 Circulate bottoms up, 330 gpm C~ 2725 psi, 100 rpm's. Monitor Well prior to POH Note: Mud Wt. in and out 9.2 ppg. POH to 7-5/8" shoe C~3 15293' Monitor Well at shoe. Well Static. Pump dry job. POH. Well taking proper displacment on hole fill. Dropped ball and opened circ sub at 7576', pipe pulling wet. cont' POH to 3022' Cont' POH, Monitor well at BHA, LD 63 joints 4" Drill pipe. LD BHA #6 Function test rams. Clean and clear rig floor of vendors tools. PJSM with Halliburton Rep on making up 7-5/8" EZSV. PU EZSV to rig floor. MU EZSV & RIH @ 1 min. per stand with 7-5/8" EZSV on 4" Printed: 12/15/2005 5:04:36 PM • BP EXPLORATION Page 12 of 12 Operations Summary Report Legal Well Name: Common Well Name Event Name: Contractor Name: Rig Name: Date 12/13/2005 12/14/2005 Z-46 Z-46 Spud Date: 11 /17/2005 DRILL+COMPLETE Start: 1 1 /1 512005 End: 12/1412005 NABOBS ALASKA DRILLING I Rig Release: NABOBS 7ES Rig Number: 7ES From - To I Hours Task , Code ~ NPT j Phase ~'i Description of Operations 04:00 - 11:00 7.00 STCTPL P PROD1 Drill pipe. 11:00 - 12:00 1.00 STCTPL P PRODi Establish circulation at 1.5 bpm 440 ps . s t down pumps and set EZSV as per Halliburton Rep at 1 09 ' 12:00 - 13:00 1.00 STCTPL P PROD1 RU cementing equipment and Perf 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 15.8 ppg followed by 3 bbls water. Switch over to rig and dis ace ement to retainer, sting in and squeeze 10 bbl water, 5 b s cement below retainer, fin sure 2350 psi at 1.25 bpm ^Un-sting from retainer and lay b~s 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 PROD1 POH laying down drill pipe. 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. Load 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 PROD1 MU 6.5" Gauge Ring /Junk Basket &RIH to 5000' POH and LD same. Printed: 12/15/2005 5:04:36 PM • • Date: December 16, 2005 To: File From: Jane Williamson Subject: Prudhoe Well Z-46A Plugback for Sidetra BP requested approval to plugback Prudhoe Well Z-46A in preparation for an upcoming sidetrack. The well was drilled to an isolated fault block where only water was found. Production casing was not run. I recommend approval of this sidetrack. ~ ~ ~ ,~ Ufa, 3 ~ 9 'tea ~ ~ 9 3 7~ ~ i ~ .~ ~? 1 ) '> a '°y r, ,,,~ ~~~ ~'~~ ~ ~~ ~ z ~ k~ ~~ ~ FRANK H. MURKOWSK/, GOVERNOR ~~ OII/ ~ i]ro~ ~ 333 W. 7"' AVENUE, SUITE 100 COI~TSERQA'1'I011T CO1rIIfIISSIOI~T ANCHORAGE, ALASKA 99501-3539 PHONE (907) 279-1433 FAX (907) 27&7542 Dave Wesley Senior Drilling Engineer BP Exploration (Alaska) Inc. P.O. Box 196612 Anchorage, Alaska 99519-6612 Re: Prudhoe Bay Z-46 Permit No. 205-151 BP Exploration (Alaska] Inc. Surface Location: 4297' FSL, 2940' FEL, SEC. 19, T 11 N, R 12 E, UM Bottomhole Location: 3804' FNL, 137' FEL, SEC. 31, 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). 2~I~Y DATED this? day of October, 2005 cc: Department of Fish & Game. Habitat Section w/o encl. K~ STATE OF ALASKA ALAS IL AND GAS CONSERVATION C (MISSION PERMIT TO DRILL 1~.fG,~~ i a 117 ~ ~ ~vs ~~~~~~~ OCT 1 ~ 2005 ~n aar. ~5 nn~ / Alaska Oil ~ Gas Cons. Commission 1a. Type of work ®Drill ^ Redrill ^ Re-Entry 1b. Current Well Class ^ Exploratory ®Development Oil one ^ Stratigraphic Test ^ Service ^Development Gas ^ Single Zone 2. Operator Name:. BP Exploration (Alaska) Inc. 5. Bond: ®Blanket ^ Single Well Bond No. 6194193 11. Well Name and Number: PBU Z-46 3. Address: P.O. Box 196612, Anchorage, Alaska 99519-6612 6. Proposed Depth: MD 17066 TVD 9002 12. Field /Pool(s): Prudhoe Bay Field / Prudhoe Bay 4a. Location of Well (Governmental Section): Surface: 4297' FSL 2940' FEL SEC. 19 T11 N R12E UM 7. Property Designation: ADL 047453 Pool , , , , , Top of Productive Horizon: 2599' FNL, 350' FEL, SEC. 31, T11N, R12E, UM 8. Land Use Permit: 13. Approximate Spud at '. November 1, 005 Total Depth: 3804' FNL, 137' FEL, SEC. 31, T11N, R12E, UM 9. Acres in Property: 2560 14. Distance to Nearest Property: 1,400' 4b. Location of Well (State Base Plane Coordinates): Surface: x-599738 y-5959100 Zone-ASP4 10. KB Elevation Plan (Height above GL): 82.9 feet 15. Distance to Nearest well within Pool Z-18 is 3750' awa 15500' MD 16. Deviated Wells: Kickoff Depth: 300 feet Maximum Hole Angle: 95 de rees 17. Maximum Anticipated Pressures in psig (see 20 AAC .0 ) Downhole: 4087 Surface: 191 1 acing rogram: Size Specifications Setting Depth To Bottom uan of Cement c.f. or sacks Hole Casin Wei ht Grade Cou lin Len th MD TVD MD TVD includin sta a data 42" 20" 91.5# H-40 Weld 80' Surface Surface 110' 110' 60 sx Arctic Set A rox. 13-1/2" 10-3/4" 45.5# L-80 BTC 4557' Surface Surface 4557' 2933' 24 sx AS Lite, 443 sx Class 'G' 9-7/8" 7-5/8" 29.7# L-80 BTC-M 15383' Surface Surface 15383' 8843' 1000 sx Class 'G', 196 sx Class 'G' 6-3/4" 4-1/2" 12.6# 13Cr80 VAM To 1833' 15233' 8737' 17066' 9003' 42 sx Class 'G' ~ 1g, PRESENT WELL CONDITION SUMMARY{To be completed forRedrill AND Re-entry Operations) Total Depth MD (ft): Total Depth ND (ft): Plugs (measured): Effective Depth MD (ft): Effective Depth TVD (ft): Junk (measured): Casing Len th Size Cement Volume MD TVD t t n r t Pr ti Perforation Depth MD (ft}: Perforation Depth TVD (ft): 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 Da Wesley Title Senior Drilling Engineer _ Prepared By Name/Number: Si nature .~ Phone 564-5153 Date %`~'~~~° ~ Terrie Hubble, 564-4628 Commission Use Only Permit To Drill Number: ~~ API Number: 50- ~ Z -- ~ ~ 2 ~ ~ Permit Approval Date: See cover letter for other requirements Conditions of Approval: Samples Required ^ Yes 1~No Mud Log Required ^ Yes ~No Hydro tfide Measures Yes ^ No Directional Survey Required 'Yes ^ No Other: ` ~ ~ ~` ~' ~ 1. 5 Q ~ ~ S-:, . APPROVED BY ~~ A roved B THE COMMI SIO Date Form 10-401 Revised 067$8154 ~ ~ ~ ~~ ~ ~\{ / ~ 1 s~4~ fbt/~f~' j ~~ ~~~?(/ ,~g~ Sytbmit Irf Duplicate i Q Well Name: Z-46 Planned Well Summary Well Z-46 Well Horizontal Target Ivishak Zone T e Producer Ob'ective 4B AFE Number: PBD4P2418 API Number: 50-029-##### Surface Northin Eastin Offsets TRS Location 5,959,100 599,737.5 983' FNL / 2,940' FEL 11 N, 12 E, 19 Target Northin Eastin Offsets TRS Location 5,946,962.00 602,536.00 2,599' FNL 1350' FEL 11 N, 12 E, 31 Bottom Northin Eastin Offsets TRS Location 5,945,760.00 602,770.00 3,804' FNL / 137' FEL 11 N, 12 E, 31 Planned TD: 17,066' and / 9,002' tvd CBE: 54.4' RTE: 82.9' Planned O eratin Da s: 29.4 da s Directional Program s A roved Well Ian: W 08 Exit oint: 15,383' and / 8,760' sstvd Maximum Hole Inclination: 94.75° from 16,617' to -17,066' in the tanned 6 3/4" roduction section. All surrounding wells pass major risk criteria. Wells Z-18 and Z-19 are the Proximity Issues: closest neighboring wells, each at 15' center. The closest approach to Z-18 is at 450 md, with acenter-to-center distance of 18.55. The closest a roach to Z-19 is at 436' md, with acenter-to-center distance of 20.24'. Survey Program: Standard MWD with IIFR /Cassandra. Nearest Well Within Pool: Well Z-18 with center-to-center distance of 3,750' at 15,500' md. Nearest Pro ert Line PBU bounda 1,400' south of TD Logging Program Hole Section: Required Sensors /Service 13 %z" Surface Real time MW D Dir/GR throu hout the interval. 9 %8" intermediate: Real time MWD Dir/GR/Res/PWD/AIM throu hout the interval. 6 3/a" roduction: Real time MWD Dir/GR/Res/AIM throu hout the interval. O en Hole: None tanned Z-46 Permit to Dril{ Application Page 1 f • Mud Program Hole Section / o eration: Drillin 13'/2" interval from surface to -1,875' T e Densit Viscosit PV YP Chlorides API FL H S ud 8.8 - 9.2 300 - 250 20 - 45 50 - 70 <500 NC - 8.0 8.5 - 9.0 Hole Section / o eration: Drillin 13'/2" interval from 1,875' to 3,000' T e Densi Viscosit PV YP Chlorides API FL H S ud 9.2 - 9.5 250 - 225 20 - 40 45 - 60 <500 8.0 8.5 - 9.0 Hole Section / o eration: Drillin 13'h" interval from 3,000' to 4,557' TD T e Densit Viscosi PV YP Chlorides API FL H S ud <9.5 200 - 225 20 - 26 40 - 50 <500 5.0 - 7.0 8.5 - 9.0 Hole Section / o eration: Drillin 9 %e" interval, surface shoe - 12,238 To HRZ T e Densi Viscosit PV YP Chlorides API FL H LSND 8.8 - 9.2 45 - 60 10 -16 22 - 26 <600 4.0 - 7.0 9.5 -10 Hole Section / o eration: Drillin 9'/8" interval,12,238 THRZ - 13,828 TKNG T e Densit Viscosi PV YP Chlorides API FL H LSND 10.4-10.6 45-60 14-22 24-28 <600 3.0-5.0 9.5-10 Hole Section / o eration: Drillin 9 %8" interval, 13,828 TKNG -15,369 TD T e Densi Viscosit PV YP Chlorides API FL H LSND 1 ~0 45 - 60 18 - 24 24 - 28 <600 3.0 - 4.0 9.5 -10 ~/ Hole Section / o eration: Drillin 6 3!4" roduction interval to 17,066' TD T e Densi Viscosit PV YP LSRV HTHP FL H Flo-Pro g.1 - 9.3 45 - 55 10 -14 22 - 26 >25 000 < 8.0 9.5 NT , Casing /Tubing Program Hole Size Casing/Tubing Size Wt. Grade ~ Connect n Length Top and / tvd Bottom and / tvd 42" 20" insulated 91.5# H-40 WLD 80' Surface 110' / 110' 13'/2 " 10 3/a" 45.5# L-80 BTC 4,557' Surface 4,557' / 2,933' 9 %8" 7 5/a" 29.7# L-80 BTC-M 15,383' Surface 15,383' / 8,843' 6 3/a" 4'/2" 12.6# 13CR-80 VamTo 1,833' 15,233'/ 8,737' 17,066' / 9,003' Tubin 3'/2" 9.2# 13CR-80 Vam To 15,220' Surface 15,233' / 8,737' f Z-46 Permit to Drill Application Page 2 • • Cementing Program Casin Strin 10 3/a", 45.5#, L-80, BTC Surface casin Slurry Design Basis: Lead slurry. 2,449' of 10 3/a" X 13'/2" annulus from surface to the base of the Permafrost, with 250% excess, plus 1,095' of 10 3/a" X 13'/z" annulus with 30% excess. Lead TOC to surface. Incorporate TAM port collar if necessary. Tail slurry. 1,013' of 10 3/a" X 13'/2" annulus with 30% excess, plus ~ 86' of 10 3/a", 45.5#, shoe tract. Tail TOC to - 3,544'md, - 2,400' tvd Pre-Flush: 15.0 bbls CW 100 at 8.32 S acer Fluid: 75.Obbls MudPUSH II at 10.0 Slur T e 10.70 Arctic Set Lite Permafrost Mix method Batch mix Lead Slurry: BHST /BHCT 57° F / 65° F Thickenin time 6 hrs 00 min "~ Slur Volume 650.6 bbl / 3,656 cf / 2 x ASL 10.7 cf/sk. Slur T e 15.8 Class `G' Mix method Batch mix Tail Slurry: BHST /BHCT 57° F / 65° F Thickenin time 4 hrs 45 min `'~' Slur Volume 91.9 bbl ! 518cf 44 x Class `G', 15.8 ~ 1.1 r;f/sk. ~ _„~ Casin Strin 7 5/8", 29.7#, L-80, BTC-M Intermediate casin Ion strin 2 Sta e Slurry Design Basis: Lead slurry. 7,571' of 7 5/8" X 9 %8" annulus with 30% excess. Lead TOC to 6,813' md, 500' above top Schrader Ma Sand w/ stage collar above CM2. Tail slurry. 1,000 of 7 /8 X 9 /8 annulus with 30 /° excess, plus -86 of 7 5/8", 29.7#, shoe tract. Tail TOC to -14,384'md, 1000' above shoe Pre-Flush: None Planned S acer Fluid: 35.0 bbls MudPush II at 11.50 Slur T e 12.5 Class G Mix method Batch mix Lead Slurry: BHST /BHCT 230° F / 150° F Thickenin time 5 hrs 30 min °" Slur Volume 377 bbl / 2,120 cf / 00 sx Class G, 12.5 , 2.1 cf/sk. Slur T e 15.8 Class `G''' er slur with `GASBLO ~°--additive Mix method Batch mix Tail Slurry: BHST /BHCT 230° F / 160° F Thickenin time 5 hrs 26 min ,~-~ ~ ,. Slur Volume 53.4 bbl / 299 cf 19 sx Class `G', 15.8 , 1.53 /sk. Casin Strin 4 ~/2", 12.6#, 13Cr-80, Vam To Production liner Slur Desi n Basis: ry g Lead slurry. None planned. Tail slurry. 1,684' of 4'/2" X 6 3/a" annulus with 30% excess, plus 150' of 4 ~h" x 7 5/8" liner lap, plus 200' of 4" drill pipe X 7 5/8" annulus, plus ~86' of 4 %2", 12.6#, shoe tract. Tail TOC to 15,198' and Pre-Flush: 15.Obbls CW 100 S acer Fluid: 30.Obbls 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 / 160° F Thickenin time 4 hrs 26 min - Slur Volume 66.0 bbl / 369 cf / 24 'sx Class `G', 15.8 .5 cf/sk. _.A-~ Z-46 Permit to Drill Application Page 3 • • Test Test Point Test Type Test pressure 10 3/" casin Float a ui ment to surface 30 min recorded 3,500 si surface 10 3/<<" casin shoe 20' new formation be and LOT 11.2 EMW 7 5/8» 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" roduction liner Float a ui ment to surface 30 min recorded 3,500 si surface Casing /Formation Integrity Testing Well Control The surface hole interval will be drilled with a diverter. Well control equipment consisting of 5,000 psi working pressure pipe rams (2), blind/shear rams, and an annular preventer will be installed and is capable of handling maximum potential surface pressures. The ram configuration will be: BOPE and drilling fluid system schematics are currently on file with the AOGCC. Well Interval: 9 %" intermediate interval into TSAG Maximum antici ated BHP: 4,087 si at 8,930' sstvd. Maximum surface ressure: 3,124 SI (based upon BHP and a full column of gas from TD @ 0.10 psi/ft) Calculated kick tolerance: 114 bbls with 11.2 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, 7 5/e" pipe rams, blind/sear rams, 7 5/8" pipe rams. (Revised 10/14/2005 to address potential maximum surface pressure in excess of 3,OOOpsi), Well Interval: 6'/<<" production interval horizontal in Ivishak Zone 4 sands Maximum antici ated BHP: 4,087 psi at 8,960' sstvd. Maximum surface ressure: 3,191 pSl (based upon BHP and a full column of gas from TD @ 0.10 psi/ft) Calculated kick tolerance: Infinite with 10.0 ppg 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: 8.8 ppg brine / 7.1 ppg Diesel 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-46 Permit to Drill Application Page • • Geologic Prognosis Formation TVDSS Uncertain Commercial H drocarbon Pore Pressure EMW G1 -265 +/-50' 122 8.8 SV6 -1015 +/-50' 467 8.8 SV5 -1665 +/-50' 766 8.8 SV4 -1785 +/-50' No 821 8.8 Base Permafrost -1810 +/-50' No 833 8.8 SV3 -2270 +/-50' No 1044 8.8 SV2 -2450 +/-50' No 1127 8.8 SV1 -2755 +/-50' No 1267 8.8 UG4 -3070 +/-50' No 1412 8.8 UG4A -3125 +/-50' No 1438 8.8 Fault 1 -3270 +/-150' n/a UG3 -3495 +/-50' No 1608 8.8 Fault 2 -3555 +/-150' n/a UG1 -3990 +/-50' No 1835 8.8 Ma -4210 +/-50' No 1937 8.8 Mb1 -4250 +/-50' No 1955 8.8 Mb2 -4320 +/-50' Yes? 1987 8.8 Mc -4410 +/-50' Yes? 2029 8.8 Na -4490 +/-50' No 2065 8.8 Nb -4515 +/-50' Yes? 2077 8.8 Nc -4570 +/-50' No 2102 8.8 OA -4685 +/-50' No 2155 8.8 OBa -4755 +/-50' No 2187 8.8 OBd -4890 +/-50' No 2249 8.8 OBf -5000 +/-50' No 2300 8.8 OBf Base -5050 +/-50' No 2323 8.8 Fault 3 -5090 +/-150' n/a CM-2 -5360 +/-50' Fault 4 -6110 +/-150' n/a CM-1 -6240 +/-50' n/a THRZ -6640 +/-50' No K-1 -6880 +/-50' No TKD absent n/a No TKC4 -6910 n/a No 3600 10.0 LCU -6930 +/-50' n/a TMLV -6950 +/-50' No TKNG -7660 +/50' n/a TJF -7980 +/50' n/a Fault 5 -8135 +/-150' n/a TJD -8400 +/50' n/a TJB -8650 +/50' n/a TSGR -8760 +/50' No 4001 8.9 TSHU -8770 +/50' n/a TEIL -8880 +J50' n/a TSAD -8930 +/50' Yes 4087 8.9 ~o, 11~ o Z-46 Permit to Drill Application Page 5 • • Geologic Prognosis (Cont) Formation TVDSS Uncertain Commercial H drocarbon Pore Pressure EMW 46P -8930 +/50' Yes 4087 8.9 45P -8960 +/50' Yes 4087 8.9 OWC -Invert -8970 +/30' 44P -8980 +/50' TD -9050 +/50' TD Criteria TD Criteria: TD well no closer than 300' from fault B, absolute hardline at X=608865, Y=5945424 Fault Prognosis Fault Formation Encountered MD Intersect TVDss Intersect Estimated Throw Direction of Throw Uncertainty Fault #1 Below UG4A 5,409' -3270 55' Northeast +/- 150' MD Fault #2 Below UG3 5,986 -3555 50' Northeast +/- 150' MD Fault #3 Just below Schrader OBf 9,097' -5090 20' Northeast +/-150' MD Fault #4 above CM1 11,165 -6110 65' Southwest +/- 150' MD Fault #5 TJF 14,500' -8135 50' North +/- 150' MD Z-46 Permit to Drill Application Page 6 • • Operations Summary Pre-Rig Operations: 1. Weld an FMC landing ring, for the FMC slim-hole wellhead, on the conductor. 2. If necessary, level the pad and prepare location for rig move. Rip Operations: 1. MI/RU Nabors 7ES. 2. Nipple up the diverter spool and riser. P/U sufficient length of 5" drill pipe and stand back in the derrick. 3. M/U a 13'/2" drilling assembly with Dir/GR. Spud and directionally drill surface hole to approximately the base of the permafrost. Trip for a new bit. 4. RIH and drill the remainder of the surface hole to approximately 100' tvd below the SV1 sand. POOH and VD BHA. 5. R/U, run, and cement the 10-3/a", 45.5# casing back to surface. A TAM port collar may be run as a contingency. 6. N/D the riser spool and N/U the FMC caking head and tubing spool. 7. N/U the BOPE and test to 3,500 psi. // f"~ 8. MU 9'/e" MWD/LWD drilling assembly and RIH, P/~" rill pipe, to the landing collar. Test the 10-3/a" casing to 3,500 psi for 30 minutes. Record the test.- 9. Drill out cement, float equipment, and the shoe. Displace the well to 8.8 ppg LSND drilling fluid. 10. Drill approximately 20' new formation and perform aLOT. / 11. Drill ahead, according to directional proposal, to -100' above the HRZ. 12. Increase mud weight, via spike fluid, to 10.6 ppg. 13. Directionally drill ahead to ~ 100 ft above the top of the Kingak. 14. Increase mud weight via spike fluid to 11.0 ppg. 15. Drill according to directional plan to intermediate TD, approximately 5' and below the top of the Sag. Circulate bottoms up as necessary for sample collection to properly identify shale/siltstone cap. 16. Condition hole as necessary. POOH, UD all 5" drill pipe. 17. 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. 18. Install casing pack-off and test per FMC representative. 19. Freeze-protect the 10-3/a" X 7 5/a" annulus, once the cement has reached 500 psi compressive strength. Confirm that the OA is open. 20. M/U a 6-3/a" drilling assembly with Dir/GR/Res. RIH, P/U additional 4" drill pipe as required. r 21. Pressure test the 7 5/s" casing to 3,500 psi for 30 minutes. Record the test. ~ 22. Displace the well to 9.1 ppg Flo-Pro NT based fluid. 23. Drill out shoe and 20' of new formation. 24. Attempt an FIT to 10.0 ppg EMW. ~ 25. Drill ahead, per directional proposal and rig site geologist, to well TD at approximately 17,066' md. 26. Condition the hole as required in preparation of running and cementing the 4-'/z" production liner. ~ Spot liner running pill on bottom. POOH, VD excess 4" drill pipe, and UD BHA. 27. R/U and run the 4-~/2", 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. 28. Displace the well to 8.9 ppg brine above the liner top. POOH and UD LRT. 29. R/U and pressure-test the casing x liner string to 3,500 psi for 30 minutes. Record the test. 30. R/U, M/U Schlumberger 2-~h", 4 spf, DPC perforating guns and 2 %a" drill pipe as required. RIH to tag and perforate per subsurface team. POOH, UD all drill pipe. 31. R/U and run a 3-'/2", 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. 32. Reverse circulate 8.9 ppg brine and Corrosion Inhibitor. 33. Drop ball/rod and set packer. 34. Individually test the tubing and annulus to 3,500 psi for 30 minutes. Record each test. 35. Shear DCR valve. 36. Install TWC and test. i Z-46 Permit to Drill Application Page 7 ~ • 37. N/D the BOPE. 38. N/U the adapter flange and tree. Test tree and adapter to 5,000 psi. 39. RU DSM. Pull TWC. 40. R/U circulating lines and test. Freeze-protect the tubing and annulus to 2,000'. Allow the diesel to U-tube to equilibrium. / 41. Install a BPV and VR plugs in the annulus valves. 42. Secure, rig down and move off. Post-Rip Operations: 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: 11/1/2005 Shane Gagliardi Operations Drilling Engineer 564-5251 Z-46 Permit to Drill Application Page 8 i • Phase 1: Move In / Rig Up /Accept Planned Phase Time Planned Phase Cost 51.93 hours $126,166 Reference RP • "Drilling/Work-over Close Proximity Surface and Subsurface Wells Procedure" SOP Issues and Potential Hazards - There are two near-by neighboring wells, Z-18 and Z-19. Z-18 is 17' to the north and Z-19 is 17' to the south of the Z-46 conductor. - Z-18 and Z-19 are already SI for pending workover/sidetrack. The well houses will require removal and any pressure bled off during the rig MI/RU. Care should be taken while moving onto the well. Spotters should be employed at all times. - Z-pad is no esignated as an H2S site. However, Standard Operating Procedures for HZS precautions should be followed at all times. Recent HZS data from the pad is as follows: Closest well to SHL Latest H2S reading Closest well to BHL Latest H reading Z-17 10ppm Z-16 10 pm Z-18 N/A Z-12 N!A The maximum level recorded of H2S on the pad was 20 ppm, in 8/2000. - Post Permit to Drill and Summary of Drilling Hazards in the dog house and camp prior to spud. - Check the landing ring height on Z-46 prior to rig mobilization. The BOP nipple up may need review for proper space-out prior to spud. Phase 2: Drill 13-'/s" Surface Hole Interval Planned Phase Time Planned Phase Cost 80.9 hours $463,243 Reference RP • "Prudhoe Bay Directional Guidelines" RP • "Well Control Operations Station Bill" RP Issues and Potential Hazards - There are five close approach issues while drilling the surface hole summarized below: Close Approach Well Name Reference MD Ctr to Ctr Distance Z-16 552 86.29 Z-17 430 53.23 Z-18 450 18.55 Z-19 436 20.24 Z-20 572 49.98 Z-46 Permit to Drill Application Page 9 f • - Due to shallow close approach issues, gyro surveys should be used for the first 1000' and or until clear. - Surveys will need to be lFR + MS corrected. - Gas hydrates have been observed in some wells drilled on Z-Pad. These were encountered near the base of permafrost to TD which is below the SV1 sand. Hydrates will be treated at surface with appropriate mud products and adjustment of drilling parameters. Refer to MI mud recommendation. - There are no anticipated faults in the surface hole section, and no significant problems are expected during drilling. A TAM port collar in the 10-3/a" casing is proposed as a contingency, should unexpected problems arise. Phase 3: Run and Cement 10-3/a" Surface Casing Planned Phase Time Planned Phase Cost 46.4 hours $507,168 Reference RP • "Casing and Liner Running Procedure" RP • "Surface Casing and Cementing Guidelines" RP • "Surface Casing Port Collar Procedure" RP Issues and Potential Hazards - It is critical that cement is circulated to the surface for well integrity. Planned cement volume is based upon: 250% excess cement through the permafrost zone and 30% excess below the permafrost. - One `bow-spring' centralizer, per joint, will be run on the first 15 joints. Additionally, one will be placed on each side of the port collar (if run). - Reciprocate the casing ~10' while displacing cement, if the hole condition will allow it. - Note: Check surface cement level prior to leaving the location to determine whether or not the cement has slumped. Record depth tagged on Morning Report. If TOC is greater than 20' below top of conductor, notify AOGCC and perform a top job at the next opportune time. - Note: In the event that cement is not circulated to surface during the initial surface casing cement job, notify the AOGCC of the upcoming remedial cement work. Phase 5: Drill 9 '/8" Intermediate Hole Interval Planned Phase Time Planned Phase Cost 215 hours $1,160,036 Reference RP • "Standard Operating Procedure for Leak-off and Formation Integrity Tests" RP • "Shale Drilling, Kingak and HRZ" RP • "Prudhoe Bay Directional Guidelines" Z-46 Permit to Drill Application Page 10 • • "Lubricants for Torque and Drag Management" RP Issues and Potential Hazards - This well bore will drill the HRZ at ~45° inclination, terminating in the top of the Sag. The HRZ will require a mud weight of 10.6 ppg. Maintain mud weight at 10.6 ppg from above the HRZ to 100' above the Kingak, weight up via spike fluid to 11.0 ppg and maintain to 7 5/e" casing point. Follow all shale drilling practices to minimize potential problems. - Five faults will be crossed in the intermediate section of hole. The potential for lost circulation or breathing is moderate. Monitor ECD and consult the Lost Circulation Decision Tree, embedded in the mud program, regarding LCM treatments and procedures. - In the past, several Z-pad wells have had shallow gas cut mud due to encountered overpressure (9.6 ppg EMW). Mud weights of 10.1 ppg-10.3 ppg were required. Gas cut mud, mud flow and oil in the returns may indicate that the overpressure is still present at which point the mud should be weighted up. - KICK TOLERANCE: In the scenario of 9.4 ppg pore pressure in the Kuparuk, a minimum fracture gra ~~ntrof 11.2 ppg at the surface casing shoe, and 10.5 ppg mud in the hole, the kick tolerance is 6 bls. Phase 6: Run and Cement 7-5/$" Intermediate Casing Planned Phase Time Planned Phase Cost 56.5 hours $707,086 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 600 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. - This intermediate casing cement job is planned as a two stage job, with a 12.5 ppg Class G lead slurry to 500' above the Schrader Ma, followed by a 15.8 ppg class `G' tail slurry to 1000' above the intermediate shoe. The TOC lead will be 6,813' md, 4,073' tvd. The TOC tail will be 14,384' md, 8,150' tvd. - 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 7-5/8" casing. Z-46 Permit to Drill Application Page 11 • r Phase 7: Drill 6-3/a" Production Hole Interval Planned Phase Time Planned Phase Cost 115.4 hours $579,165 Reference RP • "Standard Operating Procedure: Leak-off and Formation Integrity Tests" • "Prudhoe Bay Directional Guidelines" RP Issues and Potential Hazards - There are no expected fault crossings in the production hole section and 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. Phase 9: Run 4'h" Production Liner Planned Phase Time Planned Phase Cost 30 hours $247,416 Reference RP • "Modified Conventional Liner Cementing" RP Issues and Potential Hazards - The planned production liner is a 4-~/z", 12.6#, 13Cr-80, Vam Top solid liner throughout the production interval. - Differential sticking is possible. The 8.9 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/a" casing shoe. - Ensure the 4 %z" liner top packer is set prior to POOH. Phase 10: DPC Perforate Planned Phase Time Planned Phase Cost 41.5 hours $365,247 Reference RP • "Drill Pipe Conveyed Perforating" RP Issues and Potential Hazards - The well will be DPC perforated, ~100psi overbalanced, after running the 4-'/2" liner. Ensure all personnel are well briefed on Schlumberger's perforating procedures and that all responsibilities Z-46 Permit to Drill Application Page 12 • • 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 8.9 ppg brine on location and be prepared with LCM if necessary. Phase 12: Run 3-'/s" 13Cr-80 Completion Planned Phase Time Planned Phase Cost 55 hours $842,434 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 psia 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'/i" liner tieback sleeve. A Halliburton Symphony gauge w/ I-wire back to surface will be run. 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 17' to the north and Z-19 is 17' to the south of Z-46 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-46 well bore will be secured with the following barriers: o Tubing: TWC and kill weight fluid above balllrod. o IA: Annulus valves and kill weight fluid. o OA: Annulus valve and kill weight fluid. - During RD/MO operations, the Z-46 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-46 Permit to Drill Application Page 13 ~ • Drilling 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. 11. 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- ~ 19 throughout 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/a" casing will be cemented to surface. B. The 75/a" 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 6,813' and in two stages. a. The Kick Tolerance for the surface casing is 114 bbls with 10.5 ppg mud, 11.2 ppg LOT, and a 9.4 ppg pore pressure. Integrity Testing -11.2 ppg EMW LOT C. The 4-%z" 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 9.1 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 H2S data from the pad is as follows: Adjacent Producers at Surface: Adjacent Producers at TD: Z-17 10 ppm Z-16 10 m Z-18 N/A Z-12 /A VII. Faults A. Five faults are expected to be crossed by Z-46. No losses are expected to be associated with the faults. Details are listed below for reference: MD TVD TVDss Throw Fault 1 Below UG4A : 5,409' 3,353' 3,270' 55' NE Fault 2 Below UG3 : 5,986' 3,638' 3,555' 50' NE Fault 3 Below Obf Base : 9,098' 5,173' 5,090' 20' NE Fault 4 Above CM1 : 11,164 6,193' 6,110' 65' SW Fault 5 TJF 14,500 8,218' 8,135' S0'N CONSULT THE Z PAD DATA SHEET AND THE WELL PLAN FOR ADDITIONAL INFORMATION Z-46 Permit to Drill Application Page 14 ~ Z-46 ~ 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 4-1/2" ADP FLANGE = 11" X 4-1/16" WELLHEAD= KB. ELEV = FMC 82.5' BF. ELEV = 54' KOP = 400' Max Angle = 95 @ 16,629' Datum MD = Datum ND- 2677' 3-1 /2" HESXNIPPLE, ID = 2.813" 10-3/4" CSG, 45.5#, L-80, BTC ID = 9.950" ~-1 4558' CHAS I IFT MANDRELS ST MD TVD DEV TYPE VLV LATCH PDRT DATE 7 3700 2510 60 MMG DMY BK-5 6 5276 3362 60 MMG DCK BK-5 5 6640 4400 60 MMG DMY BK-5 4 8216 5600 60 MMG DMY BK-5 3 9793 6800 58 MMG DMY BK-5 2 10668 7500 45 MMG DMY BK-5 1 11278 8000 45 MMG DMY BK-5 15102' -I 3-1/2" HESXNIPPLE, ID = 2.813" 15123• HES 3-1/2" SYMPHONY BHG w / 1-WIRE Minimum ID = 2.813" @ 267T 3-1/2"HESXNIPPLE 1517T 7-5/&"x4-1/2"BAKERS-3PKR ID=3.88" 15202' 3-1/2" HESXNIPPLE, ID = 2.813" 15223• 3-1/2" HESXNIPPLE, ID = 2.813" 3-1/2" TBG, 9.2#, 13CR-80, Vam Top, 0.0087 15370' bpf, ID = 2.992" 15234' 3-v2° x a-v2" xo ~ 15234, BAKER HMC LINER HANGF~t, ZXP pkr w TBS 7-5/8" CSG, 29.7#, L-80 BTGM, 0.04591 bpf, ID = 6.75" 15384' PERFORATION SUMMARY REF LOG: ANGLE AT TOP PERF: Note: SIZE SPF INTERVAL Opn/Sqz DATE PaTD -I 16982' ~ ~ .~. X,- r' 4-1/2" LNR, 12.6#, 13CR-80, Vam Top, 17068' 0.01554 bpf, ID = 4.00" DATE REV PRUDHOE BAY UNrr WELL: Z-46 PERMfr No: API No: SEC , T, R, ' FNL, ' FWL BP Exploration (Alaska) by Schlumberger Z-46 (P8) Proposal Client: BP Exploration Alaska Field: Structure 1 Slot: Prudhoe Bay Unit - WOA Z-PAD / Z-46 ~ wall: ~ Pian Z-46 rO Borehole: ~~~ Plan Z-46 UWIIAPI#: 50029 Survey Name 1 Date: Z-46 (P8) /October 3, 2005 Tort I AHD I DDI 1 ERD ratio: 126.961 ° 113683.65 ft / 6.516 / 1.51 Grid Coordinate System: NAD27 Alaska State Planes, Zone 04, US Feel Location Latllong: N 70.29767977, W 149.19230975 Location Grid NIE YIX: N 5959100.060 ftUS, E 599737.580 ftUS Grid Convergence Angle: +0.76041130° rtical Section Azimuth: 167.950° 'O Vertical Section Origin: S 0.001 ft, W 0.002 ft I TVD Reference Datum: Rotary Table TVD Reference Elevation: 82.90 ft relative to MSL Sea Bed 1 Ground Level Elevation: 54.40 ft relative to MSL Magnetic Declination: 24.456° Total Field Strength: 57580.130 nT Magnetic Dip: 80.828° DecOnation Date: November 20, 2005 Magnetic Declination Model: BGGM 2005 North Reference: Ttue North Total Corr Mag North •> True North: +24.456° Local Coordinates Referenced To: Well Head Comments Measured Inclination Azimuth Sub•Sea TVD TVD Vertical NS EW Tool Face DLS Build Rate Walk Rate Northing Easting Latitude Longitude Depth Section ft de de ft ft ft ft tt de d 1100 ft d N00 ft de 100 ft f1US ftOS RIC u.uu u.vu ioi.o~ -oc.au u.uu U.vu u. uu U.uu ~ib/.oam u.VU u.uu U.UU aaoa~iuu.uu t)yy/3/.525 N /U.Zy/ti/y// W 14y.1y23U9/5 KOP Bld 1.5/100 300.00 0.00 167.69 217.10 300.00 0.00 0. 00 0.00 167.69M 0.00 0.00 0.00 5959100.06 599737.58 N 70.29767977 W 149.19230975 G1 347.90 0.72 167.69 265.00 347.90 0.30 -0. 29 0.06 167.69M 1.50 1.50 0.00 5959099.77 599737.65 N 70.29767897 W 149.19230923 Bld 4/100 400.00 1.50 167.69 317.09 399.99 1.31 -1. 28 0.28 167.69M 1.50 1.50 0.00 5959098.79 599737.88 N 70.29767627 W 149.19230749 500.00 5.50 167.69 416.88 499.78 7.41 -7. 24 1.58 O.OOG 4.00 4.00 0.00 5959092.84 599739.26 N 70.29765998 W 149.19229695 600.00 9.50 167.69 516.01 598.91 20.46 -19. 99 4.36 O.OOG 4.00 4.00 0.00 5959080.13 599742.21 N 70.29762515 W 149.19227442 700.00 13.50 167.69 613.98 696.88 40.39 -39. 47 8.61 O.OOG 4.00 4.00 0.00 5959060.71 599746.71 N 70.29757195 W 149.19224002 800.00 17.50 167.69 710.32 793.22 67.11 -65. 57 14.31 O.OOG 4.00 4.00 0.00 5959034.69 599752.75 N 70.29750063 W 149.19219390 900.00 21.50 167.69 804.57 887.47 100.49 -98. 18 21.42 O.OOG 4.00 4.00 0.00 5959002.18 599760.30 N 70.29741155 W 149.19213630 1000.00 25.50 167.69 896.25 979.15 140.35 -137. 13 29.92 O.OOG 4.00 4.00 0.00 5958963.35 599769.31 N 70.29730514 W 149.19206749 1100.00 29.50 167.69 984.94 1067.84 186.52 -182. 23 39.76 O.OOG 4.00 4.00 0.00 5958918.39 599779.75 N 70.29718192 W 149.19 0 SV6 1134.78 30.89 167.69 1015.00 1097.90 204.01 -199. 32 43.49 O.OOG 4.00 4.00 0.00 5958901.35 599783.71 N 70.29713523 W 149.191 61 1200.00 33.50 167.69 1070.18 1153.08 238.76 -233. 27 50.90 O.OOG 4.00 4.00 0.00 5958867.51 599791.56 N 70.29704249 W 149.19189764 1300.00 37.50 167.69 1151.58 1234.48 296.81 -290. 00 63.27 O.OOG 4.00 4.00 0.00 5958810.96 599804.69 N 70.29688752 W 149.19179743 1400.00 41.50 167.69 1228.73 1311.63 360.41 -352. 13 76.83 O.OOG 4.00 4.00 0.00 5958749.01 599819.07 N 70.29671778 W 149.19168767 1500.00 45.50 167.69 1301.25 1384.15 429.23 -419. 37 91.50 O.OOG 4.00 4.00 0.00 5958681.98 599834.63 N 70.29653408 W 149.19156890 1600.00 49.50 167.69 1368.79 1451.69 502.94 -491. 39 107.21 O.OOG 4.00 4.00 0.00 5958610.18 599851.30 N 70.29633734 W 149.19144168 1700.00 53.50 167.69 1431.03 1513.93 581.18 -567. 83 123.89 O.OOG 4.00 4.00 0.00 5958533.97 599868.99 N 70.29612849 W 149.19130664 1800.00 57.50 167.69 1487.66 1570.56 663.58 -648. 33 141.46 O.OOG 4.00 4.00 0.00 5958453.72 599887.62 N 70.29590856 W 149.19116444 End Bld 1873.35 60.43 167.69 1525.47 1608.37 726.42 -709. 73 154.85 O.OOG 4.00 4.00 0.00 5958392.51 599901.82 N 70.29574083 W 149.19105599 SV5 2156.12 60.43 167.69 1665.00 1747.90 972.37 -950. 03 207.28 O.OOG 0.00 0.00 0.00 5958152.95 599957.43 N 70.29508434 W 149.19063155 SV4 2399.32 60.43 167.69 1785.00 1867.90 1183.90 -1156. 70 252.38 O.OOG 0.00 0.00 0.00 5957946.92 600005.26 N 70.29451974 W 149.19026654 Base Perm 2449.98 60.43 167.69 1810.00 1892.90 1227.97 -1199. 76 261.77 O.OOG 0.00 0.00 0.00 5957903.99 600015.22 N 70.29440211 W 149.19019050 WeIlDesign Ver SP 1.0 Bld(doc4Ox_56) Z-46\Plan Z-46\Plan Z-46\Z-46 (P8) Generated 10/3/2005 2:03 PM Page 1 of 3 Measured VeRical Comments inclination Azimuth SutMSea ND TVD NS EW Tool Face DLS Build Rate Walk Rate Northing Easting Latitude Longitude Depth Section ft de de ft ft ft ft ft de d 1100 ft de 100 ft de 1100 ft ftUS ftUS 3J0[.[4 OU.4J 70/.O`J [[/U .VU [3DY.`JU LVStl.rfL -7`Jy7.yU 434. 62 V.UU(i U.UU U.UU U.UU 6yD/774.ZU t)UU7yM.b6 N lU.Z9773//9 W 149.7iffl/915U 3747.03 60.43 167.69 2450 .00 2532.90 2356.11 -2301.98 502. 26 O.OOG 0.00 0.00 0.00 5956805.16 600270.30 N 70.29139088 W 149.18824414 4365.16 60.43 167.69 2755 .00 2837.90 2893.74 -2827.26 616. 87 O.OOG 0.00 0.00 0.00 5956281.49 600391.85 N 70.28995584 W 149.18731677 4557.69 60.43 167.69 2850 .00 2932.90 3061.20 -2990.87 652. 56 O.OOG 0.00 0.00 0.00 5956118.38 600429.72 N 70.28950885 W 149.18702795 5003.55 60.43 167.69 3070 .00 3152.90 3449.00 -3369.76 735. 23 O.OOG 0.00 0.00 0.00 5955740.66 600517.40 N 70.28847373 W 149.18635914 5115.01 60.43 167.69 3125. 00 3207.90 3545.95 -3464.48 755. 90 O.OOG 0.00 0.00 0.00 5955646.23 600539.32 N 70.28821495 W 149.18619195 5408.88 60.43 167.69 3270 .00 3352.90 3801.55 -3714.21 810. 38 O.OOG 0.00 0.00 0.00 5955397.27 600597.11 N 70.28753271 W 149.18575119 5864.87 60.43 167.69 3495. 00 3577.90 4198.16 -4101.71 894. 93 O.OOG 0.00 0.00 0.00 5955010.96 600686.78 N 70.28647406 W 149.18506731 5986.47 60.43 167.69 3555. 00 3637.90 4303.92 -4205.04 917. 48 O.OOG 0.00 0.00 0.00 5954907.95 600710.69 N 70.28619176 W 149.1 6868.06 60.43 167,69 3990. 00 4072.90 5070.71 -4954.21 1080. 94 O.OOG 0.00 0.00 0.00 5954161.08 600884.06 8 N 70.28414502 W 149.18 7313.92 60.43 167.69 4210. 00 4292.90 5458.51 -5333.10 1163. 60 O.OOG 0.00 0.00 0.00 5953783.36 600971.75 N 70.28310989 W 149.18 7 7394.98 60.43 167.69 4250. 00 4332.90 5529.02 -5401.99 1178. 63 O.OOG 0.00 0.00 0.00 5953714.68 600987.69 N 70.28292169 W 149.18277303 7536.85 60.43 167.69 4320. 00 4402.90 5652.41 -5522.54 1204. 94 O.OOG 0.00 0.00 0.00 5953594.49 601015.59 N 70.28259232 W 149.18256036 7719.24 60.43 167.69 4410. 00 4492.90 5811.05 -5677.54 1238. 76 O.OOG 0.00 0.00 0.00 5953439.97 601051.46 N 70.28216886 W 149.18228693 7881.37 60.43 167.69 4490. 00 4572.90 5952.07 -5815.32 1268. 82 O.OOG 0.00 0.00 0.00 5953302.61 601083.34 N 70.28179245 W 149.18204389 7932.04 60.43 167,69 4515. 00 4597.90 5996.14 -5858.38 1278. 21 O.OOG 0.00 0.00 0.00 5953259.69 601093.30 N 70.28167482 W 149.18196795 8043.51 60.43 167,69 4570. 00 4652.90 6093.09 -5953.10 1298. 88 O.OOG 0.00 0.00 0.00 5953165.26 601115.22 N 70.28141603 W 149.18180086 8276.57 60.43 167.69 4685. 00 4767.90 6295.80 -6151.16 1342. 09 O.OOG 0.00 0.00 0.00 5952967.81 601161.06 N 70.28087494 W 149.18145153 8418.43 60.43 167.69 4755. 00 4837.90 6419.19 -6271.71 1368. 39 O.OOG 0.00 0.00 0.00 5952847.63 601188.96 N 70.28054557 W 149.18123889 8692.03 60.43 167.69 4890. 00 4972.90 6657.16 -6504.21 1419. 12 O.OOG 0.00 0.00 0.00 5952615.84 601242.76 N 70.27991037 W 149.18082884 8914.96 60.43 167.69 5000. 00 5082.90 6851.06 -6693.66 1460. 46 O.OOG 0.00 0.00 0.00 5952426.98 601286.60 N 70.27939280 W 149.18049473 9016.29 60.43 167.69 5050. 00 5132.90 6939.20 -6779.77 1479. 24 O.OOG 0.00 0.00 0.00 5952341.13 601306.53 N 70.27915754 W 149.18034288 9097.36 60.43 167.69 5090. 00 5172.90 7009.71 -6848.66 1494. 28 O.OOG 0.00 0.00 0.00 5952272.46 601322.47 N 70.27896934 W 149.18022139 9644.55 60.43 167.69 5360. 00 5442.90 7485.64 -7313.66 1595. 73 O.OOG 0.00 0.00 0.00 5951808.88 601430.08 N 70.27769893 W 149.17940143 11164.53 60.43 167.69 6110. 00 6192.90 8807.68 -8605.33 1877. 55 O.OOG 0.00 0.00 0.00 5950521.18 601728.99 N 70.27417000 W 149.17712428 11427.99 60.43 167.69 6240. 00 6322.90 9036.84 -8829.22 1926. 40 O.OOG 0.00 0.00 0.00 5950297.98 601780.80 N 70.27355832 W 149.17672965 12238.65 60.43 167.69 6640. 00 6722.90 9741.93 -9518.11 2076. 71 O.OOG 0.00 0.00 0.00 5949611.21 601940.22 N 70.27167621 W 149.17551556 12537.57 60.43 167.69 6787 .50 6870.40 10001.93 -9772.14 2132 .13 -180.OOG 0.00 0.00 0.00 5949357.96 601999.01 N 70.27098218 W 149.173 12600.00 57.94 167.69 6819 .48 6902.38 10055.54 -9824.51 2143. 56 -180.OOG 4.00 -4.00 0.00 5949305.75 602011.13 N 70.27083908 W 149.17 3 12700.00 53.94 167.69 6875 .47 6958.37 10138.36 -9905.43 2161 .22 -180.OOG 4.00 -4.00 0.00 5949225.08 602029.86 N 70.27061800 W 149.17483304 12707.66 53.63 167.69 6880. 00 6962.90 10144.54 -9911.47 2162. 54 -180,OOG 4.00 -4.00 0.00 5949219.06 602031.26 N 70.27060150 W 149.17482240 12757.10 51.65 167.69 6910. 00 6992.90 10183.84 -9949.87 2170. 91 -180.OOG 4.00 -4.00 O.OD 5949180.78 602040.14 N 70.27049661 W 149.17475475 12788.89 50.38 167.69 6930. 00 7012.90 10208.55 -9974.01 2176. 18 -180.OOG 4.00 -4.00 0.00 5949156.71 602045.73 N 70.27043064 W 149.17471220 12800.00 49.94 167.69 6937 .12 7020.02 10217.08 -9982.34 2178. 00 -180.OOG 4.00 -4.00 0.00 5949148.41 602047.66 N 70.27040788 W 149.17469752 12819.86 49.14 167.69 6950. 00 7032.90 10232.19 -9997.10 2181. 22 -180.OOG 4.00 -4.00 0.00 5949133.69 602051.07 N 70.27036755 W 149.17467151 12900.00 45.94 167.69 7004 .10 7087.00 10291.30 -10054.86 2193. 82 -180.OOG 4.00 -4.00 0.00 5949076.11 602064.44 N 70.27020975 W 149.17456972 12923.42 45.00 167.69 7020 .52 7103.42 10308.00 -10071.17 2197. 38 O.OOG 4.00 -4.00 0.00 5949059.85 602068.22 N 70.27016519 W 149.17454098 13827.78 45.00 167.69 7660. 00 7742.90 10947.47 -10695.95 2333. 72 O.OOG 0.00 0.00 0.00 5948436.99 602212.82 N 70.26845823 W 149.17344007 14280.33 45.00 167.69 7980. 00 8062.90 11267.47 -11008.59 2401. 95 O.OOG 0.00 0.00 0.00 5948125.31 602285.18 N 70.26760405 W 149.17288924 14499.53 45.00 167.69 8135. 00 8217.90 11422.47 -11160.03 2434. 99 O.OOG 0.00 0.00 0.00 5947974.34 602320.23 N 70.26719031 W 149.17262244 14874.30 45.00 167.69 8400. 00 8482.90 11687.46 -11418.93 2491. 49 O.OOG 0.00. 0.00 0.00 5947716.23 602380.16 N 70.26648294 W 149.17216634 WeIlDesign Ver SP 1.0 Bld(doc40x_56) Z-A61PIan Z-46\Plan Z-4612-46 (P8) Generated 10/3/2005 2:03 PM Page 2 of 3 Measured Vertical Comments Inclination Azimuth Sub•Sea TVD TVp NS EW Tool Face DLS Build Rate Walk Rate Northing Easting Latitude Longitude Depth Section ft de de ft ft ft ft ft de d 1100 ft de 100 ft de 1100 ft ftUS ftUS wcs 7o~u.ao 4~.vu 7o/.oa uoou.vu TSAG 15383.42 45.00 167.69 8760.00 7-5/8" Csg Pt 15383.43 45.00 167.69 8760.01 Shublik 15397.56 45.00 167.69 8770.00 Crv 12/100 15405.42 45.00 167.69 8775.56 15500.00 56.30 169.09 8835.43 TEIL 15595.02 67.66 170.16 8880.00 15600.00 68.26 170.22 8881.87 15700.00 80.22 171.17 8908.98 End Crv 15753.85 86.67 171.64 8915.13 Tgt 1 TVD Marker 15837.68 86.67 171.64 8920.00 TSAD / 46P 16009.69 86.67 171.64 8930.00 Crv 81100 16500.95 86.67 171.64 8958.56 Z-46 Tgt 2 16550.48 90.00 169.50 8960.00 16600.00 93.54 167.72 8958.47 End Crv 16616.97 94.75 167.11 8957.24 TD / 4-1/2" Lnr 17066.36 94.75 167.11 8920.00 Legal Description: Surface : 4296 FSL 2940 FEL S19 T11 N R12E UM Z-46 Tgt Landing : 1977 FSL 248 FEL S31 T11 N R12E UM TD / BHL : 1475 FSL 137 FEL S31 T11 N R12E UM tl/JZ.yV 77`JJ /.4p -77b(7J.1y Zb44./`J 8842.90 12047.46 -11770.66 2568.24 8842.91 12047.47 -11770.67 2568.24 8852.90 12057.46 -11780.43 2570.37 8858.46 12063.02 -11785.86 2571.56 8918.33 12136.03 -11857.40 2586.18 8962.90 12219.73 -11939.77 2601.22 8964.77 12224.35 -11944.33 2602.01 8991.88 12320.30 -12039.13 2617.52 8998.03 12373.68 -12092.00 2625.51 9002.90 12457.19 -12174.80 2637.68 9012.90 12628.55 -12344.69 2662.63 9041.46 13117.97 -12829.92 2733.90 9042.90 13167.41 -12878.75 2742.01 9041.37 13216.89 -12927.26 2751.78 9040.14 13233.82 -12943.78 2755.47 9002.90 13681.62 -13380.34 2855.37 Northing (Y) [ftUS] Easting (X) [ftUS] 5959100.06 599737.58 5946260.00 602650.00 5945760.00 602770.00 U.UVCi U.UU U.UU U.vU b'J4/4/Z./3 tiUZ4J0.0y N/U.TObtf7b61 W74y.7/1/3607 O.OOG 0.00 0.00 0.00 5947365.59 602461.56 N 70.26552199 W 149.17154677 O.OOG 0.00 0.00 0.00 5947365.58 602461.56 N 70.26552196 W 149.17154675 O.OOG 0.00 0.00 0.00 5947355.85 602463.82 N 70.26549530 W 149.17152956 5.93G 0.00 0.00 0.00 5947350.43 602465.08 N 70.26548045 W 149.17151999 5.03G 12.00 11.95 1.48 5947279.10 602480.65 N 70.26528501 W 149.17140197 4.53G 12.00 11.96 1.13 5947196.94 602496.78 N 70.26505994 W 149.17128063 4.51 G 12.00 11.96 1.02 5947192.40 602497.62 N 70.26504751 W 149.17127428 4.25G 12.00 11.97 0.95 5947097.82 602514.40 N 70.26478850 W 149.171 10 O.OOG 12.00 11.97 0.89 5947045.06 602523.09 N 70.26464405 W 149.17 5 O.OOG 0.00 0.00 0.00 5946962.44 602536.34 N 70.26441785 W 149.17 8 O.OOG 0.00 0.00 0.00 5946792.91 602563.55 N 70.26395367 W 149.17078532 -32.78G 0.00 0.00 0.00 5946308.71 602641.25 N 70.26262799 W 149.17021059 -26.63G 8.00 6.73 -4.33 5946260.00 602650.00 N 70.26249459 W 149.17014519 -26.68G 8.00 7.15 -3.59 5946211.63 602660.41 N 70.26236205 W 149.17006635 O.OOG 8.00 7.15 -3.60 5946195.16 602664.32 N 70.26231691 W 149.17003659 O.OOG 0.00 0.00 0.00 5945760.00 602770.00 N 70.26112417 W 149.16923040 WeIlDesign Ver SP 1.0 Bld( docAOx_56) Z-46\Plan Z-46\Plan Z-46\Z-46 (P8) Generated 10/3/2005 2:03 PM Page 3 of 3 by Schlumberger WELL 2-46 (P8) FIELD Prudhoe Bay Unit - WOA STRN"DRE Z-PAD Magnetlc Paramnlers SuNa:e Lwvlwn NRD2I Nasha S1a1e Planes. Zare Od. US Feet M~scalNnenls MoEel. BGGM 2005 Di0_ BO B20" DMe: Nwnm0er 20. 2005 Lar. N>01]5160] NMNn9. 6969100.0911US Grq fanv: •0.]6041 130° Slue. Zi6 TVD Rei: Rdary Tale 102900 aWve MSLI Mag Dac •26d56° FS' SI6BO1nT Lon Wt45 1132.315 Easung 599]3]60 M15 Scale Fad: 09999113003 Plan 2i81Pe1 Srvy Data OdoEer OJ. 2005 0 1800 3600 5400 7200 9000 10800 12600 O 0 c u a> U 0 1800 3600 5400 7200 9000 RTE ........~ ...............................o..................................:..................................:...................................i..................................i..................................:..................................:.................................. KOP Bld 1.51100 .-..-. .. _.. _.. .. _.. _.. _.. _.. _. f-.. _..-..-..-..-..-..-..-6-..-..-..-..-..-..-..-..-j.-..-..-..-..-..-..-..-..~..-..-..-..-..-..-..-.._.. j..-..-..-..-..-..-..-..-..j...-..-..-..-..-..-..-..-. j-.._.._..-.._.._.. _.. _.. eld aioa .-..-..:.. J6 .._.._ ~End91a.._._..-.._..-..-..-..-..-..-:.-..-..-..-..-..-..-..-..-:.-..-..-..-..-..-..-..- -..-..-.._..-..-..-.._ -..-..-.._..-..-..-..- .-..-..-..-..-..-..-..- - .-..-..-..-.._.._.._.._ 1..4 ... ,. ~...... ..................... ........................~......................... ~..........1...............................1......... f a....1..... ~.............. r..1................ n Perm .-..-..i..-..-..-.._.. _.. _.._.. _.:_. .._.._.._.._.._.._.._:.-..-..-..-..-..-.. _.. _..-1.-..-..-..-..-..-..-..- - -..-..-..-..-..-..-..- -..-..-..-..-..-..-..- .-..-..-..-..-..-..-..- - .-..-..-..-..-..-.. 10-314" Csg Pt .-.. ..j...-..-..-..-..-..-..-.. .j- .-.. .. _.. _. -..-..-.._.._.._.._.. _. _j.-..-..-..-..-..-..-..-..y..-..-..-..-..-..-..-..- .~..-..-..-..-..-..-..-..-..j...-..-..-..-..-..-..-..-.j- .-..-..-..-..-..-.. Fault Crossing - -.. .- a• - - - .-.. ..}..-..-..-..-..-..-..-..-.~- .-..-..-.. ..- -..- -..-..-..-..-. -j. ..-..-..-..-..-..-..-.. ~.. ..-..-..-..-..-..-..- . j..-..-..-..-..-..-..-.. ..j...-..-..-..-..-..-..-..-.j- .-.. -.. -..•..-..-.. Fault Cr Drp a~oD .-.. ..w..-..-.._..-..-.._.._.. .-.._..-..-..-.. _.. _.. .._..-..-..-.._..-.._. .._..-..-..-.._..-..-...i.. .._.._.._.._.._.._.._ .._.._.. ._.. ._.._.._.._..-..-..-..-.i- .-.._..-.._..-..-..-..- nd Drp .-..-..j...-..-..-..-..-..-..-..-.1-..-..-..-..-..-..-..-..-4-..-..-..-..-..-..-..-..-).-..-..-..-..-..-..-..-..~..-..-..-..-..-..-..-..-.. ~..-..-..- .. ..-..-..- .-..-..-..-..-..-..-..-.j-..-..-..-..-..-..-..-..- iuwuiwuuwu^uul^u^u^iinuuouunuunumenuunl^unuunnu^ilunu^u^a^uuuu^u~uuuu^uuuuuun~lt,~yt~~v^ 1 uii~uui^uut^uuuunmj^uuuuuiuuu^uuu . Fault Crossing .-..-..~..-..-..-..-..-..-..-..-.:-..-..-..-..-..-..-..-..-a-..-..-..-..-..-..-..-..-:.-..-..-..-..-..-..-..-. -..-..-..-..- - -..- -..-..-..-..-. - - - ..-. _ _.._.._.._.._ _ ._.._..-.._.._.._..-..- .~.. .. .. ..s. .. .. .: TJF 7-SIB" Csg Pt TJD: Crv 121100 TD 14112" lnr .. ..r..~..~..~.. ..~..~..~.. .. .. .. .. .. .. ..---..~..~..~..~..~..~..~. .. .. ..~.. .. .. ..~~.~.. ..~..~..~..~..~..~..~..*. ~..~..~..~..~..~.. .. ~~1~ AG .._ .. .. _..~..~.. ~.~..~~.~ ................ ................. .. $fwiil~ .............................. TSAR/46P -4 ) End Crv M 81100 End Crv Tgt 7 ND Marker 2-46 Tgt 2 1800 3600 5400 • 7200 9000 0 1800 3600 5400 7200 9000 10800 12600 Vertical Section (ft) Azim = 167.95°, Scale = 1(in):1800(ft) Origin = -0.00143692 N/-S, -0.00162535 E/-V bP Schlumberger WELL Z-46 (P8) FIELD Prudhoe Bay Unit - WOA STRUCTURE Z-PAD Magnetic Parameters Surface Loralron NA02) Alaska Stale Flares. Ipne 04. US Feet s<ellaneoua Motlel BGGM 1005 Dlp: 60 B2B° pate: November 20, 2005 Lar N")0 1 ] 5'. 64) Norlbing 5969100.08 IfUS Grp Conv: ~0.I6041130' Slol: 2-08 TVU Rel: Rotary Table (8].9011 above MSL) Alag Oec X26456' FS'. 51590.1 nT Loo. W14911 J1.315 [.sslilg: 599lJl56 tU5 Sale Fact: 09999tf]OOJ Plan: ZJfi IP91 Srvy Dale October 03. 2005 -3600 -1800 0 1800 3600 5400 0 -1800 -3600 A ~ -5400 z x 0 0 C II _7200 a~ m U Cn V V V -9000 10800 12600 RTE KOP Bld 1.5/100 Bid 61100 End Bld N ...:..................................:......................................-.....................-..-.-................................. .............i............. I 103/4" Csig Pt ...j ..................................5.................................. ;......................FaWt.Crolsiog.............................:..................................:............., Z-06 Flt 1 Faux Crossing Z-06 Flt 2 It 3 Fault Crossing Fault Crossing Z-06 FI14 ..:..................................:...................................:..................................:.................................:..................................:............. Drp 41100 End Drp ...y .................................. i.................................. a..................................i................................. i.................................. i.......... -.. Fault Crossldg 7-46 Fit 5 7-SI6" Cdg Pt End Crv: Crv {z1100 Tgt 1 T1lD Marker Crv 811110 z.16 Ygt z End Crv - - TD / 4%1/2" Lnr -3600 -1800 0 1800 3600 540C «< W Scale = 1(in):1800(ft) E »> -1800 -3600 -5400 -7200 -9000 -10800 -12600 ~s cO ,, . ~~- , ,, i' ~.. ~ ~.~ ~' e. _,.. q ,,- ,~ . l ~~ ~` Q J ~~ ~~ ~' r~ ~- ~ 0 ~ ~ ~ Y ... .~ r ~~'~ 0 f° r. ~ ~ ~ , . ;-- 0 _"J - -- .. _.-. -- ,, ~; ~. ,. .:. .. ~,.~.-- ~., • o 12~~~ / _, ~~ , _.,. ,- ,• .,~~ `•, ~ ~- y:, ~~~0 ~ s ~ p ~` ..- ---- Plea Z-4 Plan Z-46 .(slot 18.5)/Plan Z-46 ~~ ~O O ,_ ;T i ._.~ i': ',~ ~ ; i _~ 1 1 t ~~ o~ 0 / i. ' ~ ~~Qo a c~ . 1 ~ i I I 38 ^ ~ ~ ~ 37 ^ ~ \ ~ ~ ~ 35 ^ ~ I I I I I ~ I I 34 ^ ~ I 10 ^ _~ ~ ~ g^ i ~ ^ 33 ~ ~ 8 ^ I I ^ 32 ~ I 7 ^ I j ^ 31 ~ i g ^ i II ^ 30 j 5^ J I ^ 29 j I I ^ 210i i I j 4 ^ i Z-1021 ^ 28 I 3 ^ ~ 27 ~~ ^ I SPARE-D ~ SPARE-C ~ __ I 2 ^ SPARE-B = 103i I 1 ^ SPARE-A ^ I ' i ^ P-504A _ ^ P-5048 I r I ,--------~ ~ L J ~ i I ^ 21 ~~ I I I j 39 ^ i I ^ 22 j 11 ^ i ^ 23 ^ 24 ~' I 12 ^ i i I 13 ^ I ^ 25 ~ I 14 ^ I ^ 26 I I ~ 15 ^ Slot 2 ~ Slot 1 I I ~' ^ Z-100 I 16 ^ Slot 4 ^ I ~ I ^ Z-101 I I 17 ^ ~ I I 1s~iZl 46 I ~ I I 20 ^ I ~ ~ I I ~ i I I ~ i I I I I I Z-PAD LEGEND • AS-BUILT WELL CONDUCTOR ^ EXISTING WELL CONDUCTOR F- z c J d NOTES ~P~~ °OF ° A~gs~r '~ ~° °Richard F. Allison ° ° ~s °° 106.08 °° °°°° 'g'~essioNn~ `~ SURVEYOR'S CERTIFICATE I HEREBY CERTIFY THAT I AM PROPERLY REGISTERED AND LICENSED TO PRACTICE LAND SURVEYING IN THE STATE OF ALASKA AND THAT THIS PLAT REPRESENTS A SURVEY MADE BY ME OR UNDER MY DIRECT SUPERVISION AND THAT ALL DIMENSIONS AND OTHER DETAILS ARE CORRECT AS OF SEPTEMBER 26, 2005. 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. 5. HORIZONTAL CONTROL IS BASED ON Z PAD CONTROL MONUMENTS MON 2 AND MON 3. 4. ELEVATIONS ARE BPX MEAN SEA LEVEL (M.S.L.) DATUM. 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 Z-46 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 18 Z-PAD 19 KUPARUK P[PEIINE 1 IAA 20 T11N I VICINITY MAP N.T.S. GPB WOA Z-PAD AS-BUILT CONDUCTOR WELL Z-46 SHEET: 1 of 1 • • Oilfield Services, Alaska Schlumberger Drilling & Measurements 2525 Gambell, Suite 400 Anchorage, AK 99503 Tel (907) 273-1766 Fax (907) 561-8367 Monday, October 03, 2005 Shane Gagliardi BP Exploration Alaska Schlumber~r Prudhoe Bay Z-46 (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 Prooram: Instrument Type Start Depth End Depth GYD GC SS 28.80'md 800.00'md MWD 800.00'md 2,200.00'md MWD + IFR + MS 800.00'md 17,066.36'md Close Aoproach 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 DeLapp 10/03/05 s BP Alaska Anticollision Report Company: BP Amoco Tield: Prudhoe Bay Reference Site: PB Z Pad Reference Well: Plan Z-46 (slot 1$.5) Reference Wellpath: Plan Z-46 ~, NO GLOBAL SCAN: Using user defined selection & scan criteria Interpolation Method: MD Interval: 20.00 ft ' Depth Range: 28.50 to 17066.36 ft Maximum Radius:10000.00 ft __ _ Date: 10!3!2005 Time: 13:56:30 Page: I Co-ordinate(NE) Reference: Well: Plan Z-46 (slot 18.5), True North Vertical (TVD) Reference: Z-46 Pian 82.9 Db: Oracle Reference: Principal Plan & PLANNED PROGRAM ~', Error Model: ISCWSA Ellipse Scan Method: Trav Cylinder North _ Error Surface: _ Ellipse + Casing _ _ _ i~ ' Survey Program for DeFnitive Wellpath ~, Date: 5!11/2005 Validated: No Version: 5 Planned From To Survey Toolcode Tool Name j ft ft j 28.50 800.00 Planned: Pla n #8 V1 GYD-GC-SS Gyrodata gyro single shots 800.00 2200.00 Planned: Plan #8 V1 MWD MWD - Standard 800.00 17066.36 Planned: Pla n #8 V1 MWD+IFR+MS MWD +IFR + Mu lti Station Casing Points ~ h1ll ['VD Diameter Hole Size Nsme ft ft in in I, 4557.69 2932.90 10.750 13.500 10 3/4" j 15383.41 8842.90 7.625 9.875 7-5/8" j 17066.36 9002.90 4.500 6.750 4 1 /2" Summary <--------------- Offset Wellpath -----------> Reference Offset Ctr-Ctr No-Go Allowable Site R'cll W'cllpath MD MD Distance Area Deviation Warning ft ft ft ft ft ~ ', PB Z Pad - ExpansiorPlan Ivi Z-40 Plan Z-40 V1 Plan: Pla 401.67 400.00 208.90 7.62 201.28 Pass: Major Risk ~I j, PB Z Pad - ExpansioriPlan Ivi Z-41 Plan Z-41 V1 Plan: Pla 1153.51 1160.00 57.88 22.18 35.69 Pass: Major Risk PB Z Pad - ExpansiorPlan Ivi Z-42 Plan Z-42 V1 Plan: Pla 803.52 800.00 241.82 15.36 226.46 Pass: Major Risk ~, li PB Z Pad - ExpansiorlPlan Ivi Z-44 Plan Z-44 V1 Plan: Pla 741.99 740.00 173.64 14.25 159.40 Pass: Major Risk PB Z Pad - ExpansiorPlan Ivi Z-45 Plan Z-45 V1 Plan: Pla 401.57 400.00 193.92 7.73 186.19 Pass: Major Risk PB Z Pad - Expansiorh'lan Ivi Z-55 Plan Z-55 V1 Plan: Pla 718.44 720.00 105.89 13.28 92.61 Pass: Major Risk PB Z Pad - Expansiod?1an Ivi Z-57 Plan Z-57 V1 Plan: Pla 378.57 380.00 177.90 7.20 170.70 Pass: Major Risk PB Z Pad - ExpansiorPlan Ivi Z-60 Plan Z-60 V1 Plan: Pla 437.38 440.00 296.54 8.31 288.23 Pass: Major Risk ~~ PB Z Pad - Expansiorf~lan Ivi Z-61 Plan Z-61 V1 Plan: Pla 378.96 380.00 247.30 7.21 240.10 Pass: Major Risk li PB Z Pad - ExpansiorPlan Ivi Z-63 Plan Z-63 V1 Plan: Pla 397.96 400.00 157.22 7.57 149.65 Pass: Major Risk 'I PB Z Pad - ExpansioriPlan Kup Z-105 Plan Z-105 V1 Plan: PI 824.46 820.00 271.00 15.74 255.26 Pass: Major Risk ' PB Z Pad - ExpansiorPlan Kup Z-106 Plan Z-106 V1 Plan: PI 495.10 500.00 310.92 9.40 301.52 Pass: Major Risk PB Z Pad - ExpansiorPlan Kup Z-113 Plan Z-113 V1 Plan: PI 378.89 380.00 234.39 7.21 227.19 Pass: Major Risk ~ PB Z Pad - Expansiori~lan Kup Z-115 Plan Z-115 V1 Plan: PI 705.02 700.00 236.72 13.39 223.33 I Pass: Major Risk PB Z Pad - ExpansiorPlan Sch Z-219 Plan Z-219 V1 P{an: PI 378.75 380.00 209.10 7.21 201.90 Pass: Major Risk ~I PB Z Pad - ExpansioriPlan Sch Z-220 Plan Z-220 V1 Plan: PI 475.44 480.00 283.40 9.03 274.37 Pass: Major Risk ~~ PB Z Pad - ExpansiorPlan Sch Z-221 Plan Z-221 V1 Plan: PI 416.90 420.00 167.52 7.93 159.60 ~ Pass: Major Risk ~~ PB Z Pad - ExpansiorlPlan Sch Z-307 Plan Z-307 V1 Plan: PI 399.48 400.00 390.26 7.59 382.67 Pass: Major Risk PB Z Pad - ExpansiorPlan Sch Z-308 Plan Z-308 V1 Plan: PI 535.84 540.00 404.86 10.17 394.69 Pass: Major Risk PB Z Pad - Expansio~lan Sch Z-309 Plan Z-309 V1 Plan: PI 594.50 600.00 433.95 11.28 422.67 Pass: Major Risk j PB Z Pad - ExpansiorlPlan Sch Z-310 Plan Z-310 V1 Plan: PI 701.29 700.00 134.69 13.32 121.36 Pass: Major Risk j PB Z Pad - ExpansiorPlan Sch Z-311 Plan Z-311 V1 Plan: PI 674.37 660.00 389.86 12.75 377.12 Pass: Major Risk j PB Z Pad - Expansiod'lan Sch Z-312 Plan Z-312 V1 Plan: PI 551.30 540.00 407.84 10.39 397.44 Pass: Major Risk i PB Z Pad - ExpansioiPlan Sch Z-314 Plan Z-314 V1 Plan: PI 735.98 720.00 375.05 13.96 361.09 Pass: Major Risk PB Z Pad - ExpansiodPlan Sch Z-322 Plan Z-322 V1 Plan: PI 741.11 740.00 159.32 14.12 145.20 Pass: Major Risk PB Z Pad - Expansio~lan Sch Z-H2O7 Plan Z-H2O7 V1 Plan: P 417.15 420.00 189.38 7.98 181.40 Pass: Major Risk ' PB Z Pad Plan Z-102 Plan Z-102 V2 Plan: PI 1506.59 1880.00 665.27 32.49 632.78 Pass: Major Risk PB Z Pad Plan Z-104 Plan Z-104 V1 Plan: PI 391.49 400.00 617.86 7.15 610.71 Pass: Major Risk i PB Z Pad Plan Z-108 Plan Z-108 V1 Plan: PI 487.73 500.00 640.34 8.89 631.45 Pass: Major Risk ~ ~~ PB Z Pad Plan Z-109 Plan Z-109 V1 Plan: PI 469.04 480.00 675.25 8.66 666.59 Pass: Major Risk PB Z Pad Plan Z-110 Plan Z-110 V1 Plan: PI 469.46 500.00 758.73 8.63 750.10 Pass: Major Risk li PB Z Pad Plan Z-111 Plan Z-111 V1 Plan: PI 373.49 380.00 631.88 6.82 625.06 Pass: Major Risk PB Z Pad Plan Z-112 Plan Z-112 V1 Plan: PI 372.64 380.00 726.07 6.81 719.26 Pass: Major Risk j PB Z Pad Plan Z-114 Plan Z-114 V1 Plan: PI 390.89 400.00 604.39 7.14 597.26 Pass: Major Risk ~ PB Z Pad Plan Z-200 (3.5) Plan Z-200 OBd V1 Plan 674.65 700.00 607.70 12.51 595.19 Pass: Major Risk i PB Z Pad Plan Z-200 (3.5) Plan Z-200L1 OBb/a V3 674.65 700.00 607.70 12.62 595.07 Pass: Major Risk PB Z Pad Plan Z-200 (3.5) Plan Z-200L2 OA V4 Pla 674.65 700.00 607.70 12.51 595.19 Pass: Major Risk PB Z Pad Z-01 Z-01 V1 481.16 500.00 518.50 10.64 507.86 Pass: Major Risk i PB Z Pad Z-02 Plan Z-026 V2 Plan: PI 525.06 540.00 553.62 9.65 543.97 Pass: Major Risk PB Z Pad Z-02 Z-02 V3 516.84 540.00 553.41 9.44 543.97 Pass: Major Risk PB Z Pad Z-02 Z-02A V1 524.16 540.00 553.60 9.63 543.97 Pass: Major Risk • BP Alaska • Anticollision Report Company: BP Amoco - - - Date: 10/3!2005 - Time: 13:56:30 Page: 2 Field: Prudhoe Bay Reference Site: PB Z Pad Co-ordinate(Nl,;) Reference: Well: Pla n Z-46 (slot 18.5), True North Reference Well: Plan Z-46 (slot 18.5) Vertical (TV D) Refere nce: Z-46 Pla n 82.9 Reference Wellpath: Plan Z-46 Db: Oracle Summary '~ <-------- - Offset Wellpath ----- -----> Reference Offset Ctr-Ctr No-Go .Ulowable Site Well Wellpath MD MD Distance Area Deviation Warning ft ft ft ft ft ', ' PB Z Pad _ Z-03 - - -- Z-03 V4 596.32 620.00 579.48 10.27 569.21 Pass: Major Risk PB Z Pad Z-04 Z-04 V6 477.12 500.00 622.92 8.34 614.59 Pass: Major Risk '; PB Z Pad Z-04 Z-04A V10 485.30 500.00 623.08 8.59 614.49 Pass: Major Risk ~' PB Z Pad Z-05 Plan#3 Z-05AP61 VO Pla 478.09 500.00 658.10 8.20 649.89 Pass: Major Risk PB Z Pad Z-05 Plan#4 Z-05A VO Plan: 478.09 500.00 658.10 8.20 649.89 Pass: Major Risk I i PB Z Pad Z-05 Z-05 V3 478.09 500.00 658.10 8.14 649.95 Pass: Major Risk PB Z Pad Z-06 Plan#7 Z-O6A V3 Plan: 424.11 440.00 692.03 7.62 684.40 Pass: Major Risk PB Z Pad Z-06 Z-06 V1 424.11 440.00 692.03 7.45 684.57 Pass: Major Risk PB Z Pad Z-07A Z-07A V1 480.42 500.00 726.72 8.69 718.03 Pass: Major Risk PB Z Pad Z-07 Z-07 V1 480.42 500.00 726.72 8.69 718.03 Pass: Major Risk I PB Z Pad Z-08A Z-08A V1 426.60 440.00 765.08 10.14 754.93 ~ Pass: Major Risk i PB Z Pad Z-08 Z-08 V1 426.60 440.00 765.08 10.14 754.93 Pass: Major Risk ~ PB Z Pad Z-09 Plan Z-09A V1 Plan: PI 502.23 520.00 797.90 10.52 787.38 Pass: Major Risk I ~, PB Z Pad Z-09 Z-09 V4 492.31 520.00 797.69 10.13 787.55 Pass: Major Risk ii ' PB Z Pad Z-100 Z-100 V7 394.55 400.00 280.11 6.79 273.32 Pass: Major Risk PB Z Pad Z-101 Plan Z-101 A V3 Plan: Z 260.39 260.00 272.33 4.38 267.95 Pass: Major Risk PB Z Pad Z-101 Plan Z-101AP61 VO Plan 260.39 260.00 272.33 4.64 267.69 Pass: Major Risk j PB Z Pad Z-101 Z-101 V5 241.10 240.00 272.02 4.22 267.80 Pass: Major Risk ~ PB Z Pad ~ Z-103 Z-103 V1 487.41 520.00 587.88 8.31 579.57 Pass: Major Risk I I PB Z Pad Z-103 Z-103P61 V3 487.41 520.00 587.88 8.31 579.57 Pass: Major Risk PB Z Pad Z-103 Z-103PB2 V1 487.41 520.00 587.88 8.31 579.57 Pass: Major Risk i PB Z Pad Z-10 Z-10 V1 475.88 500.00 831.99 9.99 821.99 t Pass: Major Risk ~~ PB Z Pad Z-10 Z-10A WPS V1 Plan: Z-1 463.95 480.00 831.76 9.67 822.08 Pass: Major Risk !, PB Z Pad Z-11 Plan#3, Z-11A V1 Plan: 447.54 460.00 263.47 7.33 256.14 Pass: Major Risk ' PB Z Pad ~ Z-11 Z-11 V1 447.54 460.00 263.47 7.52 255.94 Pass: Major Risk PB Z Pad Z-12 Z-12 V1 486.39 500.00 226.92 9.60 217.32 Pass: Major Risk PB Z Pad Z-13 Z-13 V3 448.53 460.00 193.46 8.08 185.38 Pass: Major Risk ' PB Z Pad Z-13 Z-13A V2 457.18 460.00 193.59 8.23 185.36 Pass: Major Risk PB Z Pad Z-13 Z-13AP61 V3 457.18 460.00 193.59 8.17 185.42 Pass: Major Risk PB Z Pad Z-14A Z-14A V1 448.75 460.00 158.91 8.71 150.20 Pass: Major Risk PB Z Pad Z-14 Plan Z-146 V4 Plan: PI 438.19 440.00 158.77 8.85 149.92 Pass: Major Risk PB Z Pad Z-14 Z-14 V1 448.75 460.00 158.91 8.82 150.09 Pass: Major Risk PB Z Pad Z-15 Z-15 V1 468.78 480.00 124.43 8.31 116.13 Pass: Major Risk PB Z Pad Z-16 Z-16 V1 551.99 560.00 86.29 11.58 74.71 Pass: Major Risk ii PB Z Pad Z-17 Z-17 V1 430.37 440.05 53.23 7.88 45.35 Pass: Major Risk II PB Z Pad Z-18 Z-18 V1 450.48 460.00 18.55 8.26 10.29 Pass: Major Risk PB Z Pad Z-19 Plan Z-19A V2 Plan: PI 440.01 440.00 20.38 9.96 10.42 Pass: Major Risk , PB Z Pad Z-19 Z-19 V1 435.65 440.00 20.24 9.84 10.40 Pass: Major Risk PB Z Pad Z-20 Z-20 V1 571.62 580.00 49.98 10.98 39.00 Pass: Major Risk 'i PB Z Pad Z-210 Z-210 V6 391.08 400.00 689.50 6.83 682.68 Pass: Major Risk PB Z Pad Z-210 Z-210PB1 V7 391.08 400.00 689.50 6.83 682.68 Pass: Major Risk ' PB Z Pad Z-21 Z-21 V3 365.39 380.00 434.67 7.17 427.49 Pass: Major Risk ~ PB Z Pad Z-21 Z-21 A V5 371.55 380.00 434.76 7.01 427.76 Pass: Major Risk ' PB Z Pad Z-22A Z-22A V1 336.13 340.00 407.29 5.79 401.50 Pass: Major Risk PB Z Pad Z-22B Z-22B V1 336.13 340.00 407.29 5.79 401.50 Pass: Major Risk i it PB Z Pad Z-22 Z-22 V1 336.13 340.00 407.29 5.79 401.50 Pass: Major Risk PB Z Pad Z-23 Z-23 V3 402.38 420.00 382.58 7.94 374.64 Pass: Major Risk PB Z Pad Z-23 Z-23A V2 375.60 380.00 381.83 6.81 375.02 Pass: Major Risk PB Z Pad Z-23 Z-23B V7 374.21 380.00 381.81 6.86 374.95 Pass: Major Risk PB Z Pad Z-24 Z-24 V1 384.29 400.00 356.04 9.77 346.26 Pass: Major Risk PB Z Pad Z-25 Z-25 V1 402.91 420.00 334.59 7.87 326.71 Pass: Major Risk ~ PB Z Pad Z-26 Z-26 V1 386.81 400.00 311.42 8.03 303.40 I Pass: Major Risk i PB Z Pad Z-27 Z-27 V1 382.79 400.00 645.13 7.43 637.70 I Pass: Major Risk ' PB Z Pad Z-28 Z-28 V1 382.65 400.00 677.20 8.15 669.05 Pass: Major Risk PB Z Pad Z-29 Z-29 V1 364.32 380.00 708.27 6.60 701.67 Pass: Major Risk ~ P8 Z Pad Z-30 Z-30 V7 418.20 440.00 742.45 7.37 735.08 Pass: Major Risk PB Z Pad Z-30 Z-30A V9 409.76 420.00 742.28 7.22 735.06 Pass: Major Risk I PB Z Pad Z-31 Z-31 V1 421.74 440.00 775.40 7.73 767.67 Pass: Major Risk PB Z Pad Z-32A Z-32A V7 413.74 420.00 807.84 7.69 800.15 Pass: Major Risk , PB Z Pad Z-326L1 Z-32BL1 V2 417.94 440.00 807.95 7.84 800.11 Pass: Major Risk PB Z Pad Z-326P61 Z-32BPB1 V2 417.94 440.00 807.95 7.84 800.11 Pass: Major Risk ~ PB Z Pad Z-326P62 Z-32BP62 V2 417.94 440.00 807.95 7.84 800.11 Pass: Major Risk ' PB Z Pad Z-326 Z-32B V2 417.94 440.00 807.95 7.84 800.11 Pass: Major Risk I • BP Alaska Anticollision Report Company: BP Amoco llate: 10/3/2005 Time: 13:56:30 Page: 3 Field: Prudhoe Bay Keference Site: PB Z Pad Co-ordinate (NE) Refe rence: Well: Pla n Z-46 (slot 18.5), True North Reference Well: Plan Z-46 (slot 18.5) Verfical (TV D) Refere nce: Z-46 Pla n 82.9 Reference Wellpath: Plan Z-46 Db: OraCle Summary ~ <-----.-__-- O rfset Wellpath ----- -----> Reference Offset Ctr-Ctr Vo-Go iWowabic Site Well Wellpath 1V7D MD Distance Area Deviation Warning ft ft ft ft ft - PB Z Pad - - Z-32 --- Z-32 V2 417.94 440.00 807.95 7.84 800.11 Pass: Major Risk PB Z Pad Z-33 Plan Z-33B V2 Plan: PI 346.05 360.00 841.58 8.08 833.50 Pass: Major Risk PB Z Pad Z-33 Z-33 V1 399.92 420.00 840.69 6.94 833.75 Pass: Major Risk PB Z Pad Z-33 Z-33A V1 346.05 360.00 841.58 7.91 833.67 Pass: Major Risk PB Z Pad Z-35PB1 Z-35PB1 V2 393.27 400.00 903.38 6.82 896.56 Pass: Major Risk '~ ~ PB Z Pad Z-35 Z-35 V2 393.27 400.00 903.38 6.82 896.56 Pass: Major Risk PB Z Pad Z-38P61 Z-38PB1 V3 479.50 500.00 1006.76 8.12 998.64 Pass: Major Risk 'I PB Z Pad Z-38 Z-38 V5 479.50 500.00 1006.76 8.12 998.64 Pass: Major Risk PB Z Pad Z-39 Z-39 V18 509.67 520.00 295.29 8.26 287.02 Pass: Major Risk II PB Z Pad Z-39 Z-39A V4 509.67 520.00 295.29 8.26 287.02 Pass: Major Risk I, i • Field: Prudhoe Bay ~~~ Site: PB Z Pad Well: Plan Z-46 (slot 18.5) j Wellpath: Plan Z-46 loo loo Travelling Cylinder Azimu[h (TFO+AZI) [deg) vs Centre to Centre Separation [IOOtt/in] Site: PB Z Pad Drilling Target Conf : 90% Description: Map Northing: 5946962.00 ft Map Easting :602536.00 ft Latitude: 70° 15'S1.900N Polygon X ft 1 -154.17 2 105.26 3 416.98 4 166.50 Target: Z-46 Poly Well: Plan Z-46 (slot 18.5) Based on: Planned Program Vertical Depth: 8900.00 ft below Mean Sea Level Local +N/-S: -12175.21 ft Local +E/-W: 2637.32 ft Longitude: 149° 10' 15.562W Y ft Map E ft Map N ft 140.07 602380.00 5947100.00 -1413.65 602660.00 5945550.00 -1287.76 602970.00 5945680.00 185.82 602700.00 5947150.00 -12000 - 12300 N -12600 - iBonn 0 0 0 0 0 0 0 0 - 0200 0500 - 3800 -x-00 0 FW: Nabors 7es / 7 5/8" rams • • Subject: FW: Nabors 7es l 7 5l8"rams From: "Wesley, Dave E" <WesleyDE@BP.com> Date: Fri, 14 Oct 2005 11:04:26 -08b0 To: winton_aubert~admin.state.ak.us Winton, Please see response from Lance Vaughan. I asked them to confirm the availabiii#y of two sets of 7 5/8" pipe rams for the upcoming Z-46 well. We will plan to install them and test prior to running the 7 5f8" casing. A revised page is included to attach with the Permit to Drill application. Thanks and regards, «Z-46 Permit to Drill Rev1 sheet.ZlP» Dave Wesley, Jr. GPB Sr. Drilling Engineer 564-5153 office 440-8631 cell From: Vaughan, Lance A (Fairweather) Sent: Friday, October 14, 2005 10:50 AM To: Wesley, Dave E Subject: Nabors 7es / 7 5/8" rams Dave, We have checked at Nabors yard and we have two sets of 7 5/8" pipe rams available. Lance Lance Vaughan Wellsite Leader -Nabors 7es 907 659 4835 Content-Description: Z-46 Permit to Drill Rev1 sheet.ZlP Z-46 Permit to Drill Rev1 sheet.ZlP Content-Type: application/x-zip-compressed Content-Encoding: base64 1 of 1 10/17/2005 8:15 AM • • 89-6/1252 22$ TERR{E L NUBBLE ~(n ~.5 BP EXPLORAT~~N AK -NC "Mastercard Check" t oC. PO BOX 196612 M6 7-5_ 12 DArE `~ ANCHORAGE, AK 99519 66 Ck~ ~~ • r PAY TO THE o DER of DOLLARS First National Bank Alaska. Anchorage, AK 99501 MEMO ~ ~~ • 5 200060:99 L4~.~6 2 2 7~.~ L 5 56n^ 0 2 28 ~.L2 a • • TRAlYSMITAL LETTER CHECK LIST CIRCLE APPROPRIATE LETTER/PARAGRAPHS TO BE INCLUDED IN TRANSMITTAL LETTER WELL NAME PTD# CHECK WHAT ADD-ONS "CLUE" APPLIES (OPTIONS) MiJLTI The permit is for a new wellbore segment of LATERAL existing well , Permit No, API No. (If API number Production should continue to be reported as last two (2) digits a function of the original API number stated are between 60-69) above. PILOT HOLE In accordance with 20 AAC 25.005(f), all (pI~ records, data and logs acquired for the pilot hole must be clearly differentiated in both name (name on permit plus PH) and API number (50 - 70/80) from records, data and logs acquired for well (name on permit). SPACING The permit is approved subject to full EXCEPTION compliance with 20 AAC 25.055. Approval to perforate and produceliniect is contingent upon issuance of a conservation order approving a spacing exception. (Company Name) assumes the liability of any protest to the spacing exception that may occur. DRY DITCH All dry ditch sample sets submitted to the SAMPLE Commission must be in no greater than 30' sample intervals from below the permafrost or from where samples are first caught and 10' sample intervals through target zones. Rev: 04/01/05 C\j odyltransm ittal_checklist WELL PERMIT CHECKLIST Field & Pool_PRUDHOE BAY, PRUDHOE OIL - 640150 Well Name: PRUDHOE BAY UN PBU Z-46 Program DEV Well bore seg ^ PTD#:2051510 Company BP EXPLORATION (ALASKA) INC Initial ClasslType DEV 11-OIL GeoArea Unit OnlOff Shore On Annular Disposal ^ Administration 1 Permit-fee attached - - - - - Yes - - - 2 Lease number appropriate - - - -Yes - - 3 Uniquewell_nameandnumber_ __ __ _ -_ ___ _- _ _ ____ - _ Yes_ __ __ __ ______ _______ ___ _ ------------------------------------------ 4 Well located in a_d_efnedpool - - - - Yes - - - - 5 Well located proper distance from drilling unitboundary_ - - - - - - Yes - - - - 6 Well located properdistance_fro_motherwells______________________ ________Yes_-__-___ - - -- 7 Sufficient acreageayail_ableindrillingunit_______________________ _.--____Yes_______--.-_______---____-.-._ ------------------------------------------ 8 If deviated, is.wellbore plat_included - - - Yes - - - - - - - - - 9 Operator only affected party- - - - - - - - - Yes - - - - - - - - - - - 10 Operatorhas-appropriate-bond in force ------- ----- ---- --- ----- -Yes----- - ---------- - ---- ---------- --------- --- -- -------- --- - - 11 Permit can be issued without conservation order Yes Appr Date 12 Permit_can be issued without administ[ative_approval - _ - - - - - - Yes - _ - - - - -- RPC 10/1212005 13 Can permit be approved before 15-day wait Yes 14 Well located within area and strata authorized by-InjectionO[de[#(put1O#in_comments)-(For_ NA-------------_.-_--__..---__----..-_--__..---_--_.-----_---.-.-__-.-----.- 15 All wells within1l4_mileareaof[eyiewidentified(Forservicewellonly)_______ ________ NA-.__-__--__--.-____-__---___--_______--__---_--______-_- 16 Pre-produced injectgr; duration of preproduction less than 3 months-(For service well only) - NA_ - _ _ - _ _ _ 17 ACMP_FindingofConsistency_hasbeenissuedfor_thisp[o]ect____________ _______ NA______-.---_-_____-__-___ -_---____---________--_______-_-_________--__ Engineering 18 _C_onductorstring_provided_____--------------------------- --------Yes-___ 20"@110'.-___----.__ - - - 19 Surface casingprotects all_known USDWs - - - Yes - - 20 CMT_vol-adequate_tocirculate-on conductor_&surf_csg-_,____________ ________Yes____---Adequate excess,--_-___---_-_______--_____,-_______-----__----_-____-___ 21 CMT_vol_adequate-to tie-in long string to surfcsg____________________ __.____ No--_____-.--..-_____--_--____---.- -- - - 22 CMT_willcoyerallknown-productiyehorizons_---.-___...-__ __-...Yes_________________________ 23 CasingdesynsadequateforC,T,B&_permafrost------ ----------- --------Yes---------------------.--------------------------.-------.-------.- 24 Adequatetankage_orreservepit_---______________ ________ ________Yes_____--Nabors7ES.___--_-___-.--_______--________--_____-._-_ --------------- 25 If_a_re-drill, has-a 10-403 far abandonment been approved . - - - - - - - - - NA_ - _ _ New well, _ - -- 26 Adequatewellboreseparaiion-propgsed_________________________ ________Yes____-___-- ----------------------------------------------------------------- 27 Ifdiverterrequired,doesitmeetregulations_______________________ _______ Yes_---______ -___ - - Appr Date 28 .Drilling fluid_program schematic & equip list adequate- - - - - - ... - Yes Max MW-11,0-ppg.- WGA 1011712005 29 BOPEs,dotheymeetregulation____________________ _______ _______Yes-_-___-.---_______---_-__-._- _.-_ _-- ____, ____ __---_.__ 30 ,BOPS-press rating appropriate; test to_(put prig in comments)- - .. _ _ - - _ _ - . Yes - _ _ - - Test to 3500 psi. _MSP 3191 psi, _ _ - 31 Choke_manifold complies wIAPI_RP-53 (-May 84)- _ Yes _ _ _ _ _ 32 Work willoccurwilhoutoperationshutdown_________________-____ _-.---_Yes-__---_____---_-______-________-_______--______-_-.-__ -----____-_-___-_ 33 Js presence_of H2S gas_probable - - - - - - N0 - Not an H2S pad. - - - - - - - - - - 34 Mechanical condition of wells withinAORueri_fiedfFor-service well onlya______ ________NA-___-_-----____-___-__------_______ - -- - -- Geology 35 Permit_can be issued w!o hydrogen-sulfide measures - _ - - _ No- - -- - - -- 36 ,Data-presentedon_potentialgverpressurezones__-___--.____ __---.-_N_A______________________ Appr Date 37 Seismic analysis of shallowgas_zones----------------- -------- -------- NA--_--__-.-----__-__--_--____--_--_____---__-____ - - - RPC 10!1212005 38 Seabed conditionsurvey_(ifgff-shore)--_______________________ _-.---_NA___--_____---_______,--____--___-______--.- 39 -Contact name/phone for_weekly progress_reports [exploratory only]_ _ - - - - NA_ Geologic Commissioner: Engineering Publi Date: Commissioner: Date C 'on r Date ors ~~,1,?~s ~~~ ~~-~ ~~~~ a ~. f a
