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Home My WebLink About207-0837. If perforating: 1. Type of Request: 2. Operator Name: 3. Address: 4. Current Well Class:5. Permit to Drill Number: 6. API Number: 8. Well Name and Number: 9. Property Designation (Lease Number):10. Field: Abandon Suspend Plug for Redrill Perforate New Pool Perforate Plug Perforations Re-enter Susp Well Other Stimulate Fracture Stimulate Alter Casing Pull Tubing Repair Well Other: Change Approved Program Operations shutdown What Regulation or Conservation Order governs well spacing in thes pool? Will perfs require a spacing exception due to property boundaries?Yes No 11. Total Depth MD (ft): Total Depth TVD (ft): Effective Depth MD: Effective Depth TVD: MPSP (psi): Plugs (MD): Junk (MD): PRESENT WELL CONDITION SUMMARY Perforation Depth MD (ft): Perforation Depth TVD (ft):Tubing Size: Tubing Grade: Tubing MD (ft): Packers and SSSV Type:Packers and SSSV MD (ft) and TVD (ft): Casing Length Size MD TVD Burst Collapse Exploratory Stratigraphic Development Service 12. Attachments: 14. Estimated Date for Commencing Operations: 13. Well Class after proposed work: 15. Well Status after proposed work: 16. Verbal Approval: 17. I hereby certify that the foregoing is true and the procedure approved herein will not be deviated from without prior written approcal. Proposal Summary Wellbore schematic BOP SketchDetailed Operations Program OIL GAS WINJ WAG GINJ WDSPL GSTOR Op Shutdown Suspended SPLUG Abandoned ServiceDevelopmentStratigraphicExploratory Authorized Name and Digital Signature with Date: Authorized Title: Contact Name: Contact Email: Contact Phone: AOGCC USE ONLY Commission Representative: Conditions of approval: Notify AOGCC so that a representative may witness Sundry Number: Location ClearanceMechanical Integrity TestBOP TestPlug Integrity Other Conditions of Approval: Post Initial Injection MIT Req'd?Yes No Subsequent Form Required: Approved By: Date: APPROVED BY THE AOGCCCOMMISSIONER PBU S-125 Acid Stimulation Hilcorp Alaska, LLC 3800 Centerpoint Dr, Suite 1400, Anchorage, AK 99503 207-083 50-029-23361-00-00 ADL 0028258 11623 Conductor Surface Intermediate Production Liner 6750 80 4290 10332 1402 10394 20" X 34" 9-5/8" 7" 4-1/2" 6780 29 - 109 28 - 4318 26 - 10358 10213 - 11615 29 - 109 28 - 3213 26 - 6763 6683 - 6751 11528 770 3090 5410 7500 10550 2280 5750 7240 8430 10370 - 11515 4-1/2" 12.6# x 3-1/2" 9.3# 13cr80 24 - 102196769 - 6763 Structural 4-1/2" Baker S3 Packer No SSSV Installed 10150, 6646 Date: Torin Roschinger Operations Manager Hunter Gates hunter.gates@hilcorp.com (907) 777-8326 PRUDHOE BAY 2/4/2026 Current Pools: AURORA OIL Proposed Pools: AURORA OIL Suspension Expiration Date: STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION APPLICATION FOR SUNDRY APPROVALS 20 AAC 25.280 Comm. Comm.Sr Pet Eng Sr Pet Geo Sr Res Eng Form 10-403 Revised 06/2023 Approved application is valid for 12 months from the date of approval.Submit PDF to aogcc.permitting@alaska.gov Digitally signed by Torin Roschinger (4662) DN: cn=Torin Roschinger (4662) Date: 2026.01.21 09:59:27 - 09'00' Torin Roschinger (4662) 326-042 By Grace Christianson at 10:10 am, Jan 21, 2026 CDW 01/21/2026 DSR-1/22/26TS 1/21/26J.Lau 1/26/26 10-404 JLC 1/26/2026 01/26/26 Hot Diesel Wash & Acid Stimulation Well: S-125 PTD: 207-083 Well Name:S-125 Permit to Drill:207-083 Current Status:Operable, PAL API Number:50-029-23361-00 Estimated Start Date:2/4/2026 Estimated Duration:3 days Regulatory Contact:Abbie Barker Service Lines:DHD/CT/Testers First Call Engineer:Hunter Gates (215) 498-7274 (M)(907) 777-8326 (O) Second Call Engineer:Tyson Shriver (406) 690-6385 (M) Current Bottom Hole Pressure:2,234 psi at 6,700 TVDss Max Ant. Surface Treating Pressure:4,000 psi Min ID:2.813 @ 10,084 MD Sliding Sleeve Max Angle:100 deg @ 10,691 MD Last Tag:10,330 SLM w/ GR (deviated) Brief Well Summary: S-125 is an Operable Kuparuk producer. After being fracd in 2011, the reservoir pressure dropped about 700 psi in 3 years (2014). Current reservoir pressure in 2026 is within 100 psi of the reservoir pressure measured in 2014. However, since 2019, our total fluid rate has been decreasing while reservoir pressure is remaining relatively flat. The hypothesis is that the well is suffering from some sort of skin damage. Current Status: Active Operable Producer Objective: Plan is to pick up a jet swirl nozzle and jet hot diesel throughout the wellbore to combat the paraffin issues. Once complete. Load the well and ensure it is killed. Begin fluid packing and acid stimulation procedure reciprocating across the perforations. Once completed and overflushed, rig down service coil and flow back well through portable test separator until pH neutralizes enough to send down production. Existing Casing/Tubing Program: String Pipe #/ft Grade Top Bottom Surface csg 9-5/840 L-80 Surface 4,318 Prod csg (original hole)726 L-80 Surface 10,729 Prod tbg 4.512.6 L-80 Surface 5,414 Prod tbg 3.59.3 L-80 5,414 10,219 Prod liner 4.512.6 L-80 10,219 11,615 Perforated Intervals for Acid Treatment: Top Bottom Net perf Footage Cumulative Acid Across Each Interval 10,370 10,530 16040 10,580 10,600 205 10,650 10,680 308 10,750 10,920 17043 10,970 11,035 6516 11,085 11,515 430108 Total 875~220 Hot Diesel Wash & Acid Stimulation Well: S-125 PTD: 207-083 Procedure DHD 1. Prior to CT arriving, perform TIFL to confirm our tubing has integrity. 2. Shut-in well to allow tubing to stack out and shoot IA fluid level. 3. Bleed down IA to obtain 1000+ psi differential and monitor for 1 hour. 4. Obtain IA fluid level to determine pass or fail. 5. If TIFL fails, utilize a pump truck to fluid pack the IA. The well will then be retested after the acid job is complete to see if paraffin was impacting the integrity of the GLVs. Coil Tubing 1. MIRU CTU. 2. MU and RIH w/ jet swirl nozzle for diesel and acid wash. Goal is to wash hot diesel across tubulars due to this well being a bad paraffin offender. 2% KCl should be sufficient to use as KWF.Paint flag at liner top of 10,219. 3. RIH and begin pumping hot diesel around 2000. Well has historically seen heavy paraffin from 2000 to 5000. Take note of sticky spots and focus on reciprocating/washing through them until drifts are clean. a. It would be favorable to utilize the same BHA for the acid treatment, however, there is a chance paraffin begins to hang us up or clog our nozzle and negatively impact circ pressure. 4. Once drifts are clean through this problem area, continue drifting in hole with a goal of dry drifting to PBTD. 5. PUH to ~3000 and ensure well is fluid packed with 2% KCl. Freeze protect tubing w/ ~50 bbls of diesel. 6. RIH to top of liner at 10,219 and begin pumping 2% KCl to obtain initial injectivity test. Pump an entire coil volume (+/- 30 bbls). 7. Hold safety meeting prior to initiating acid job. 8. RIH to base of lowest perforated interval at 11,515 and begin acid stimulation. Lay-in 1.5x liner volume (30 bbls) to get liner fluid packed with HCl. Avoid squeezing acid away as much as possible. 9. Once nozzle is back to top of liner, start pumping at max rate, reciprocating across all net perf intervals. a. ~0.22 bbl of acid every 10 of net perfs, summarized in perf table above. 10. Once all acid has been pumped, begin pulling up to the top of the liner at 10,219 and overflush acid with KCl/SI blend. Summary of acid schedule can be found below. Ensure CTBS isolated during wash to squeeze acid into formation (may develop squeeze pressure or see relatively immediate breakover). Pump Schedule 11. After overflush of KCl/SI combo is pumped, POOH pumping displacement keeping hole filled. Hot Diesel Wash & Acid Stimulation Well: S-125 PTD: 207-083 12. RDMO CTU. 13. Turn well over to portable test unit for acid flowback. Portable Testers 1. MIRU portable test separator. 2. Communicate with WPO to determine what neighboring wells flowline can be utilized for flowback. S-103 may be a good potential candidate. 3. Review RP: Acid Flowback to Portable Separator, Tanks, or Production. Begin with 1.5 MMCFD working up to ~3.5 MMCFD to produce. 4. Ensure flowback tanks include soda ash or similar neutralizer to neutralize pH of the fluids being flowed back and disposed of. b. pH >2 and <12 for disposal at GNI 4. Contact PCC and let them know flowback is ready to commence. 5. Open the well and begin unloading to tanks. 6. Once a bottoms up volume has been flowed back, increase GL rate as necessary to optimize flow and adjust choke to full open, if not already there. 7. Continue flowback to tanks, monitoring pH. a. Appropriate PPE should be worn when sampling fluid pH. 8. Once pH is 6.5 to 7, solids are <0.2% and emulsions are <2%, it is acceptable to divert returns to production. 9. Continue to flow until well is stable. 10. Conduct an 8-hour test. Piggyback with the pad test separator, if possible. 11. RDMO. Attachments Current Wellbore Schematic Sundry Change Form Hot Diesel Wash & Acid Stimulation Well: S-125 PTD: 207-083 Current Wellbore Schematic: Hilcorp Alaska, LLC Hilcorp Alaska, LLCHilcorp Alaska, LLCChanges to Approved Work Over Sundry ProcedureDate: January 21, 2026Subject: Changes to Approved Sundry Procedure for Well S-125Sundry #:Any modifications to an approved sundry will be documented and approved below. Changes to an approved sundry will be communicated to theAOGCC by the workover (WO) first call engineer. AOGCC written approval of the change is required before implementing the change.Step Page Date Procedure ChangeHAK PreparedBy (Initials)HAKApprovedBy (Initials)AOGCC WrittenApproval Received(Person and Date)Approval:Asset Team Operations Manager DatePrepared:First Call Operations Engineer Date Post Office Box 244027 Anchorage, AK 99524-4027 3800 Centerpoint Drive Suite 1400 Anchorage, AK 99503 Phone: (907) 564-4891 02/09/2024 Mr. Mel Rixse Alaska Oil and Gas Conservation Commission 333 West 7th Avenue, Suite 100 Anchorage, Alaska 99501 Re: Prudhoe Bay Surface Casing by Conductor Annulus Top-offs of Cement, Corrosion Inhibitor through 02/09/2024. Dear Mr. Rixse, Enclosed please find a copy of a spreadsheet with a list of Prudhoe Bay wells that were topped-off with cement, corrosion inhibitor in the surface casing by conductor annulus through 02/09/2024. Cement top-offs are executed as needed to mitigate the void space left at surface by minor cement fallback during the primary surface casing by conductor cement job. The remaining void space between the top of the cement and the top of the conductor is filled with a heavier than water corrosion inhibitor to reduce the risk of external surface casing corrosion. The attached spreadsheets include the well names, API and PTD numbers, treatment dates and volumes. As per previous agreement with the AOGCC, this letter and spreadsheet serve as notification that the treatments took place and meet the requirements of form 10-404 Report of Sundry Operations. If you have any additional questions, please contact me at 564-4891 or oliver.sternicki@hilcorp.com. Sincerely, Oliver Sternicki Well Integrity Supervisor Hilcorp North Slope, LLC Digitally signed by Oliver Sternicki DN: cn=Oliver Sternicki, c=US, o=Hilcorp North Slope LLC, ou=PBU, email=oliver.sternicki@hilcorp.com Date: 2024.02.09 11:15:58 -09'00' Oliver Sternicki Hilcorp North Slope LLC. Surface Casing by Conductor Annulus Cement, Corrosion Inhibitor Top-off Report of Sundry Operations (10-404) 02/09/2024 Well Name PTD #API # Initial top of cement (ft) Vol. of cement pumped (gal) Final top of cement (ft) Cement top off date Corrosion inhibitor (gal) Corrosion inhibitor/ sealant date L-293 223020 500292374900 30 8/29/2023 S-09A 214097 500292077101 2 9/19/2023 S-102A 223058 500292297201 2 9/19/2023 S-105A 219032 500292297701 10 9/19/2023 S-109 202245 500292313500 7 9/19/2023 S-110B 213198 500292303002 35 9/19/2023 S-113B 202143 500292309402 10 9/19/2023 S-115 202230 500292313000 4 9/19/2023 S-116A 213139 500292318301 4 9/19/2023 S-117 203012 500292313700 3 9/19/2023 S-118 203200 500292318800 9 9/19/2023 S-122 205081 500292326500 5 9/19/2023 S-125 207083 500292336100 2 9/19/2023 S-126 207097 500292336300 3 9/19/2023 S-134 209083 500292341300 35 9/19/2023 S-200A 217125 500292284601 7 9/19/2023 S-202 219120 500292364700 13 9/19/2023 S-210 219057 500292363000 10 9/19/2023 S-213A 204213 500292299301 4 9/19/2023 S-215 202154 500292310700 3 9/19/2023 S-216 200197 500292298900 4 9/19/2023 S-41A 210101 500292264501 3 9/19/2023 W-16A 203100 500292204501 2 9/23/2023 W-17A 205122 500292185601 3 9/23/2023 S-125 207083 500292336100 2 9/19/2023 Well Name PTD # API # Initial top of cement (ft) Vol. of cement pumped (gal) Final top of cement (ft) Cement top off date Corrosion inhibitor (gal) Corrosion inhibitor/ sealant date W-19B 210065 500292200602 8 9/23/2023 W-21A 201111 500292192901 8 9/23/2023 W-32A 202209 500292197001 4 9/23/2023 W-201 201051 500292300700 44 9/23/2023 W-202 210133 500292343400 6 9/23/2023 W-204 206158 500292333300 3 9/23/2023 W-205 203116 500292316500 3 9/23/2023 W-207 203049 500292314500 3 9/23/2023 W-211 202075 500292308000 8 9/23/2023 W-213 207051 500292335400 3 9/23/2023 W-214 207142 500292337300 10 9/23/2023 W-215 203131 500292317200 2 9/23/2023 W-223 211006 500292344000 7 9/23/2023 Z-69 212076 500292347100 2.0 27 1.5 10/24/2023 S-128 210159 500292343600 11 12/27/2023 S-135 213202 500292350800 16 12/27/2023 V-113 202216 500292312500 24 12/31/2023 V-114A 203185 500292317801 5 12/31/2023 V-122 206147 500292332800 5 12/31/2023 V-205 206180 500292333800 2 12/31/2023 V-207 208066 500292339000 8 12/31/2023 V-214 205134 500292327500 5 12/31/2023 V-215 207041 500292335100 2 12/31/2023 V-218 207040 500292335000 5 12/31/2023 V-224 208154 500292340000 16 12/31/2023 V-225 209118 500292341900 6 12/31/2023 V-01 204090 500292321000 3 1/1/2024 V-02 204077 500292320900 5 1/1/2024 V-04 206134 500292332200 5 1/1/2024 V-102 202033 500292307000 8 1/1/2024 V-104 202142 500292310300 5 1/1/2024 V-220 208020 500292338300 4 1/1/2024 ~ • ~~ ~ :~~~~~~~ ~~~ ~~~~~~ ~~~~~ '~~~~~ ; ~ , ~i-~~~~~ ~~is page ide~~ifies t~ose 9ter~s ~hai ~ver~ r~o~ ~ca~~ed ~~~a~g t~a~ i~itia~ prod~ctio~ s~a~~ing phase. They are ~vailable ¢n the original file, s~ay be scar~~ed durarag ~ speciai rescan acti~r~ty ~r a~e ~iewable ~y direct snspection of ~he file. ~c'.'-/ ~ ~ ~ ~ eil ~iis~ory ~i9e 6der~t~fier OfgBI]%ZA9'9~ (done) ^ Two-sided III I~'I~ IIIIII I~~I~ ^ Rescan Needed III II~I~~IIII I~III~ RESCAN DIGITAL DATA OVERSIZED (Scannable) ~ Color Items: Diskettes, 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: ~S~ ' ~ Project Proofing II I II'I (I II III I I III BY: Maria Date: Q ~S~ ~ I ti i P x 30 = ~ ~~ + = TOTAL PAGES~ ~ on repara ng Scann _ _ . (Count does not include cover sheet) BY: Maria Date: GJ~I~ /Q C~'' ~s~ ~ ~ Production Scanning ~~~ ~~^'~~""' ""' Stage 1 Page Count from Scanned File: ~(Count does include co r sheet) Page Count Matches Number in Scanning Preparation: YES NO BY: Maria Date: G~ /~'~Q ~ /s/ ~/ ~/ ( ~ // 1 Stage 1 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. I) I II I) II I II II I I III !?eScanned II I II ~I (I I I III I I~II BY: Maria Date: ~S~ Comments about this file: Quality Checked ~II II~III III II') III 10/6/2005 Well History File Cover Page.doc • • STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS 1. Operations Abandon U Repair Well U Plug Perforations U Perforate U Other XU Bridge Plug Pull Performed: Alter Casing ❑ Pull Tubing ❑ Stimulate - Frac ❑ Waiver ❑ Time Extension ❑ Change Approved Program ❑ Operat. Shutdown ❑ Stimulate - Other ❑ Re -enter Suspended Well ❑ 2. Operator 4. Well Class Before Work: 5. Permit to Drill Number: Name: BP Exploration (Alaska) , Inc. Development © Exploratory ❑ ° 207 -083 3. Address: P .0 . Box 196 612 Stratigraphic ❑ Service ❑ 6. API Number: Anchorage, Alaska 99519 -6612 50- 029 - 23361 -00 -00 7. Property Designation (Lease Number): a 8. Well Name and Number: ADLO- 028258 S-125 9. Logs (List logs and submit electronic and printed data per 20AAC25.071): 10. Field /Pool(s): Prudhoe Bay Field / Aurora Oil Pool 11. Present Well Condition Summary: Total Depth measured 11623 feet Plugs measured NONE feet true vertical 6750 feet Junk measured 11528 feet Effective Depth measured 11527 feet Packer measured 10150, 10213 feet true vertical 6762 feet true vertical 6646,6683 feet Casing Length Size MD TVD Burst Collapse Structural Conductor 80' 20" 215.5# A -53 29' -109' 29' -109' Surface 4290' 9 -5/8" 40# L -80 28' -4318' 28' -3213' 5750 /� 3090 Production 10332' 7" 26# L -80 26' - 10358' 26' -6763' 724RE � E D Liner 1402' 4 -1/2" 12.6# L -80 10213'- 11615' 6683' -6751' 8430 Liner JUN 13 2012 Perforation depth Measured depth SEE ATTACHED feet AOtl CC True Vertical depth feet 4 -1/2" 12.6# 13Cr80 24' ;5414 ' 24' -3784' Tubing (size, grade, measured and true vertical depth) 3 -1/2" 9.3#r 5414'-10219' 3784'-6687' 4 -1/2" BKR S -3 PERM PKR 10150' 6646' Packers and SSSV (type, measured and true vertical depth) 5 BKR ZXP TOP PKR 10213' 6683' 12. Stimulation or cement squeeze summary: Intervals treated (measured): U f> U-' La ? 1 PANE Treatment descriptions including volumes used and final pressure: 13. Representative Daily Average Production or Injection Data Oil -Bbl Gas -Mcf Water -Bbl Casing Pressure Tubing Pressure Prior to well operation: 1147 2850 71 221 Subsequent to operation: 1279 2 916 73 238 . 14. Attachments: 15. Well Class after work: Copies of Logs and Surveys Run Exploratory ❑ Development ® e Service ❑ Stratigraphic ❑ Daily Report of Well Operations X 16. Well Status after work: Oil .. © Gas ❑ WDSPL ❑ GSTOR ❑ WINJ ❑ WAG ❑ GINJ ❑ SUSP ❑ SPLUG ❑ 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. Sundry Number or N/A if C.O. Exempt: Contact Nita Summerhays / Printed Name N' to Summer J Title Petrotechnical Data Technician A005 � Signatu-c Phone 564 -4035 Date 06/11/2012 `i " JUN 14 2O7 Form 10-404 Revised 11/2011 Uir Submit Original Only S -125 207 -083 PERF ATTACHMENT Name I eratio Date 'Pert 07 PER Operation Code Meas Depth 90 Meas Depth Base Tvd Depth Top Tvd Depth Base S-125 10,530. 6,778.21 6,839.18 S -125 7/16/07 PER 10,580. 10,600. 6,849.64, 6,851.56 S -125 7/16/07 PER 10,650. 10,680. 6,850.63 6,846.52 S -125 7/16/07 PER 10,750. 10,920. 6,835.02 6,810.95 S -125 , 7/16/07 PER 10,970. 11,027. 6,804.64', 6,797.4 S -125 7/16/07 PER 11,345. 11,515. 6,770.02 6,763.05 S -125 7/26107 PER _ 11,085. 11,375. 6,789.84 6,768.27 S -125 7/26/07 PER 10,970. 11,035. 6,804.64 6,796.37 S-125 1 6,768.52 6,807.84 S -125 8130 10,394. , /11 BPS 10394 10,390. - _- 6,780.18 6,778.21 S -125 F 8/31111, SPS 10,428. 10,550. 6,797.08 6,844.25 • S -125 9/81111 SPS 10,380. 10,428. 6,773.33 6,797.08 S -125 9/14/11 SPS 10,379. 10,380. 6,772.85 6,773.33 S -125 11123/11 APF 10,37 10,380. 6,768.52 6,773.33 S -125 1 5119/12 SPR 10,379. 10,550., 6,772.85 6,844.25 S -125 5/20112 BPP 10,394. 11,515. 6,780.18 6,763.05 AB ABANDONED PER PERF APF ADD PERF RPF REPERF BPP BRIDGE PLUG PULLED SL - SLOTTED LINER BPS BRIDGE PLUG SET SPR SAND PLUG REMOVED FCO FILL CLEAN OUT SPS SAND PLUG SET FIL FILL SQF SQUEEZE FAILED MIR MECHANICAL ISOLATED REMOVED SQZ SQUEEZE MIS ;MECHANICAL ISOLATED STC STRADDLE PACK, CLOSED MLK MECHANICAL LE AK STO STRADDLE PACK, OPEN • OH OPEN HOLE - - 1 • S -125 DESCRIPTION OF WORK COMPLETED NRWO OPERATIONS EVENT SUMMARY A *TE SUMMARY 5/19/2012 CTU #8 - 1.75" - Fill Clean Out and Pull IBP Depart for S -125. Arrive on location and standby waiting for loader to clear RU area and dunnage due to soft ground. RU coil. ...Job continued on 5/20/12 5/20/2012 Continued from WSR of 5/19/12. CTU 8 - 1.75" coil. Job scope : FCO and pull IBP. Finish RU. RIH. Pump three 15 bbl GeoVis pills to cleanout to 10552' CTMD. Tagged IBP at 10552' CTMD. POOH. Lay out BHA. M/U Bkr IBP fishing BHA. PT lube and RIH. Latch IBP at 10556'. Jar up 18 times before IBP released. Let element relax for 30 min. POH. Overpull at tailpipe. Slow to 10 fpm in restrictions. Pop off well and inspected IBP. Most all of the elements and bag left in the hole as well as some of the metal bands. Bullhead fluid in hole to push any loose debris to bottom. Start RD. Job Continued on 5/21/12... 5/21/2012 Continued from WSR of 5/20/12. CTU 8 - 1.75" coil. Job scope : FCO and pull IBP. Finish RD. «< Job Complete »> FLUIDS PUMPED BBLS 5 60/40 METH 65 GEOVIS GEL 725 1% SLICK KCL W/M776 795 TOTAL TREE= 4- 1/16" CM/ • WELLHEAD = 11" FMC (ETY NOTES: WELL > 70 @ 10514'. ACTUATpR•= LEO: S-1 2 5 KB ELEV = 63 9' t BF ELEV = 61 25 KOP= 300" , —1 1011' — 19 -5/8" TAM PORT COLLAR = Max Angle 100° @ 10691' Datum MD = 10361' Da 2213' —14 -1/2" HES X NIP, ID = 3.813" D Datum TVD = 6700' SS 120" CONDUCTOR, 215.5 #, A -53, ID = ? H 108' 5414' H4 -1/2" X 3 -1/2" XO, ID = 2.992" I I9 -5/8" CSG, 40#, L -80 BTC, ID = 8 835" N 4318' / GAS LIFT MANDRELS 4 -1/2" TBG, 12.6 #. 13CR -80 VAM TOP, —I 5414' , ST MD TVD DEV TYPE VLV LATCH FORT DATE 4 5458 3807 58 KGB -2 DOME INT 16 12/06/11 0152 bpf, ID = 3.958" 3 7617 5007 53 KGB -2 SO NT 20 12/06/11 17" LNR, 26#, L -80 TCII XO TO L -80 BTC-M ---{ 6676' 2 8554 5601 51 KGB -2 DM`( NT 0 09/04/11 0 1 9994 6550 52 KGB-2 'DMY NT 0 10/04/07 17" HES ES CEMENTER H 7166' II A m `STA #1 = ()MY HAS EXTENDED PACKING Minimum ID = 2.813" @ 10085' 10084' H3-1/2" XD DURO SLD SLV, ID= 2.813" I 3-1/2" XD DURO SLIDING SLEEVE 10107' _I3 -1/2° HES X NIP, ID= z 913° 3 -1/2" HES SYMPHONY PLUS GUAGE CARRIER — 10128' 1 IN w/ CABLE TO SURFACE IN IA 10148' —I3 -112" X 4-1/2" X0, ID = 2.960" 0 10150' H7" X 4-1/2" BKR S -3 PROD PKR, ID = 3.870" I 10154' H4- 1/2 "X3- 1/2 "X0, ID= 2.960" I I 10175' _43 -1/2" HES X NIP, ID = 2.813" I 10196' _.,I3 -1/2" HES X NIP, ID = 2.813" I 3 -1/ TBG, 9.3 #, 13CR - 80 VAM TOP, { 10219' 10213' .47" X 5" BKR ZXP LTPw / TIEBK SLV, ID = 4.410" I 0087 bpf, ID = 2 992" 10219' _13-1/2" VVLEG, ID = 2.992" I I 10211' — I ELMD NOT LOGGED ON XX/XX/XX I 10234' _17" X 5" BKR HMC LNR HGR, ID = 4.440" 7" BKR GEN II WHIPSTOCK (07/10/07) --I 10358' 10241' I__15" X 4-1/2" X0 ,ID = 3.950" PERFORATION SUMMARY MILLOUT WINDOW (S -125) 10358' - 10371' REF LOG SWS AND VISION ON 07/14/07 ANGLE ATTOPPERF 61° @ 10370' Note: Refer to Production DB for historical perf data SIZE SPF INTERVAL Opn/Sgz DATE 2 -7/8" 6 10370 - 10450 0 07/26/07 10495' —14-1/2" MARKER JOINT w / RA TAG 2-1/2" 6 10390 - 10530 0 07/16/07 z 2 -1/2" 6 10580 - 10600 0 07/16/07 /;, 2-1/2" 6 10650 - 10680 0 07/16/07 2 -1/2" 6 10750 - 10920 0 07/16/07 y _` `-' i 2 -1/2" 6 10970 - 11027 0 07/16/07 �■ 11301' — 4-1/2" MARKER JOINT 2 -7/8" 6 10970 - 11035 0 07/27/07 ` w / RA TAG 2 -7/8" 6 11085 - 11375 0 07/27/06 �_ PBTD 11528' 2 -1/2" 6 11345 - 11515 0 07/16/07 ■ FISH. IBP ELEMENTS & METAL — 11528' ` I7" LNR, 26 #, L -80 BTC-M, .0383 bpf, ID = 6.276" —I 10729' BANDS (05/20/12) �I #.f• 4 -1/2" LNR, 12 6 #, L -80 IBT -M, .0152 bpf, ID = 3.958" —1 11615' 4 .0/ DATE REV BY COMMENTS DATE REV BY COMMENTS AURORA UNIT 07128/07 N9ES ORIGINAL COMPLETION 09/20/11 JLJ/ PJC SAND DUMP (09/14/11) WELL S -125 10/04/07 KSB/TLH GLV GO & MN ID CORRECTION 10/24/11 JNUJIVO CORRECTED API NO (09/29/11) PERMT No '070830 01/19/08 ?/ PJC DRLG DRAFT CORRECTIONS 12/12/11 RCT /JMD GLV C/0 (12/06/11) API No: 50-029-23361-00 02/15/08 PRA /PJC PERFORATION CORRECTIONS 05/23/12 RRW /JMD FCO, IBP PULL & FISH (05/20/12) SEC 35, T12N, R12E, 4227' FSL & 4502 FEL 09/20/11 MSS /PJC GLV C/0 (09/04/11) 09/20/11 WEC/ PJC SET IBP / CARBOLITE (08130 /11) BP Exploration (Alaska) 4. STATE OF ALASKA ALASKA" AND GAS CONSERVATION COMMISSICIP REPORT OF SUNDRY WELL OPERATIONS 1. Operations Abandon ❑ Repair Well ❑ Plug Perforations IS Stimulate Ei Oth❑ Performed: Alter Casing ❑ Pull Tubing ❑ Perforate New Pool ❑ Waiver❑ Time ExtensE Change Approved Program ❑ Operat. Shutdown❑ Perforate 0 Re -enter Suspended 1/C 2. Operator BP Exploration (Alaska), Inc. 4. Well Class Before Work: 5. Permit to Drill Number: Name: Development 0 Exploratory ❑ „ 207 -0830 3. Address: P.O. Box 196612 Stratigraphic Service ❑ 6. API Number: Anchorage, AK 99519 -6612 P 50- 029 - 23361 -00 -00 8. Property Designation (Lease Number) : 9. Well Name and Number: ADLO- 028258 r S -125 10. Field /Pool(s): PRUDHOE BAY FIELD / AURORA OIL POOL 11. Present Well Condition Summary: Total Depth measured 11623 feet Plugs (measured) 10550, 10379 (TOC) feet true vertical 6749.81 feet Junk (measured) None feet Effective Depth measured 11527 feet Packer (measured) 10150 10213 feet true vertical 6762.17 feet (true vertical) 6646 6683 feet Casing Length Size MD TVD Burst Collapse Structural Conductor 80' 20" 215.5# A -53 29 - 109 29 - 109 Surface 4290' 9 -5/8" 40# L -80 28 - 4318 28 - 3213 5750 3090 Production 10332' 7" 26# L -80 26 - 10358 26 - 6763 7240 5410 Liner 1402' 4 -1/2" 12.6# L -80 10213 - 11615 6683 - 6751 8430 7500 Liner Liner ti 5 'i� Perforation depth: Measured depth: SEE ATTACHED - _ Scirk 1 N E1) I AN ' ` True Vertical depth: _ _ _ Tubing: (size, grade, measured and true vertical depth) 4 -1/2" 12.6# 13Cr80 24 - 5414 24 - 3784 3 -1/2" 9.3# 13Cr80 5414 - 10219 3784 - 6687 Packers and SSSV (type, measured and true vertical depth) 4 -1/2" Baker S -3 Perm Packer 10150 6646 5" Baker ZXP Top Packer 10213 6683 RECEIVED 12. Stimulation or cement squeeze summary: DEC 2 1 Z U 11 Intervals treated (measured): Iask$ Ott tit ties COS. Commission Treatment descriptions including volumes used and final pressure: AhQi�alrnp R 13. Representative Daily Average Production or Injection Data Oil -Bbl Gas -Mcf Water -Bbl Casing Pressure Tubing pressure Prior to well operation: 581 1123 35 267 Subsequent to operation: 14. Attachments: 15. Well Class after work: Copies of Logs and Surveys Run Exploratory Developments 0 Servirj Stratigraphic ❑ Daily Report of Well Operations X 16. Well Status after work: Oil + El Gas ❑ WDSPL ❑ GSTOR ❑ WINJ ❑ WAG❑ GINJ ❑ SUSP❑ SPLUG ❑ 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. Sundry Number or N/A if C.O. Exempt: NA Contact Joe Lastufka Printed Na - , •e La - u , Title Petrotechnical Data Technologist Signet Phone 564 -4091 Date 12/19/2011 RBDMS DEC 21 2011 2 4i-74Z' Form 10 -404 Revised 10/2010 Submit Original Only S -125 207 -083 PERF ATTACHMENT Sw Name Operation Date Perf Operation Code Meas Depth Top Meas Depth Base Tvd Depth Top Tvd Depth Base S -125 7/16/07 PER 10,390. 10,530. 6,778.21 6,839.18 S -125 7/16/07 PER 10,580. 10,600. 6,849.64 6,851.56 S -125 7/16/07 PER 10,650. 10,680. 6,850.63 6,846.52 S -125 7/16/07 PER 10,750. 10,920. 6,835.02 6,810.95 S -125 7/16/07 PER 10,970. 11,027. 6,804.64 6,797.4 S -125 7/16/07 PER 11,345. 11,515. 6,770.02 6,763.05 S -125 7/26/07 PER 11,085. 11,375. 6,789.84 6,768.27 S -125 7/26/07 PER 10,370. 10,450. 6,768.52 6,807.84 S -125 7/26/07 PER 10,970. 11,035. 6,804.64 6,796.37 S -125 8/30/11 BPS 10,550. 11,515. 6,844.25 6,763.05 S -125 8/31/11 SPS 10,428. 10,550. 6,797.08 6,844.25 S -125 9/8/11 SPS 10,380. 10,428. 6,773.33 6,797.08 • S -125 9/14/11 SPS 10,379. 10,380. 6,772.85 6,773.33 S -125 11/23/11 APF 10,370. 10,380. 6,768.52 6,773.33 AB ABANDONED PER PERF APF ADD PERF RPF REPERF BPP BRIDGE PLUG PULLED SL SLOTTED LINER BPS BRIDGE PLUG SET SPR SAND PLUG REMOVED FCO FILL CLEAN OUT SPS SAND PLUG SET FIL FILL SQF SQUEEZE FAILED MIR MECHANICAL ISOLATED REMOVED SQZ _ SQUEEZE MIS MECHANICAL ISOLATED STC STRADDLE PACK, CLOSED MLK MECHANICAL LEAK STO STRADDLE PACK, OPEN OH OPEN HOLE • 1 • • S -125 DESCRIPTION OF WORK COMPLETED NRWO OPERATIONS EVENT SUMMARY 8/29/2011CTU # 9 w / 1.75" ct: Job objective Drift tubing PPROF set IBP & Sand back. «< Conitnue WSR from 8/28/11 » >. MU and RIH w/ SLB memory PPROF tooistring w/ X -Y caliper, GHOST & DEFT. Log PPROF as per program. At surface confirmed good DATA. «< Job in progress. »> 8/30/2011; CTU # 9 w / 1.75" ct: Job objective Drift tubing PPROF set IBP & Sand back. «< Continue WSR from 8/29/11 »> RIH w / 2.52" IBP. Set IBP at 10550' mid - element. 1 POOH, LD tools, recover ball. RIH to 10523', lay in sand plug, wait two hrs. Repeat gags at 10357' RIH and reverse circulate to 10400' «< Job in progress »> 8/31/2011 CTU # 9 w / 1.75" ct: Job objective Drift tubing PPROF set IBP & Sand back. «< 'Continue WSR from 8/30/11 »> Tagged top of sand 10410' having trouble w / ;counters do to paraffin on pipe counters are slipping. Freeze protect well w / 35 bbls 50/50 Methanol 9/2/2011 ***WELL S/I ON ARRIVAL * ** (pre frac) ;TAGGED TOP OF SAND © 10,425' SLM (10,428' MD) TAGGED X -NIP @ 10,193' SLM/ 10,196' MD ( +3 correction to measure depth) RIH W/ 2.50" CENTRALIZER & SLB SBHPS GAUGES } * * *CONT WSR ON 9/3/11 * ** 9/4/2011 ' ** *WSR CONTINUED FROM 9-3-20 (pre frac) PULLED INT -LGLV FROM ST#4 © 5453 SLM (5458' MD) }SET INT -DGLV IN STA # 4 @ 5453' SLM (5458' MD) , LRS LOADED TBG W/ 210 BBLS CRUDE i SET INT -DGLV IN STA # 2 @ 8550' SLM (8554' MD), LRS PERFORMED PASSING MIT -IA 4000 PSI PULLED X- CATCHER FROM 10080' SLM RAN A 2.5" X 10' DUMP BAILER AND TAGGED TOP OF SAND @ 10448' SLM, DUMP BAIL SAND ** *CONTINUE WSR ON 9 -5- 2011 * ** 9/4/2011;T/I/O= 640/1100/0 Assist Slickline, MIT -IA PASSED to 4000 psi (Tree repair) !Pump into the IA with 5 bbls 60/40 meth followed by 210 bbls dead crude to load. ;Slickline to set DGLV. Pump 3 bbls dead crude to achieve a test pressure of 4000 psi. IA lost 145 psi in 1st 15 min and 59 psi in 2nd 15 min for a total pressure loss of :204 Psi in 30 min test. Bled back 5 bbls of crude. Valves positions at time of LRS ;departure: SV, WV, = closed. SSV, MV, IA, OA = open. FWHP'S = 1500/500/120. 9/5/2011 ** *WSR CONTINUED FROM 9- 4- 2011 * ** (pre frac) ;MADE 4- 2.5" x 10' DUMP BAIL RUNS ANC) TAGGED TOP OF SAND AT 10,439' SLM - ** *WSR CONTINUED ON 9- 6- 2011 * ** 9/6/2011 CTU #9 1.75" CT Objective: FCO, Carbolite Dump MIRU. «< Continued on 09/07/11 »> • 9/6/2011; ** *WSR CONTINUED FROM 9 -5 -2011 ** *(frac) MADE 2- 2.5" x 10' DUMP BAIL RUNS AND TAGGED TOP OF SAND @ 10,439' SLM ** *WELL SHUT IN ON DEPARTURE, NOTIFIED DSO OF WELL STATUS. * ** 9/6/2011CTU #9 1.75" CT. Scope of Work: FCO. Carbolite Plug. Standby for Well Support to Rig Up. « <Job in Progress »> 9/7/2011CTU #9 1.75" CT. Objective: FCO, Carbolite Dump « <Continued from 09/06/11>>> MIRU. RIH w/ 2.50" JSN. Dry tag TOS at 10,403'CTM. Clean out sand the long ;way, taking 1:1 returns to open top tanks. Clean sand out from 10,403'CTM to 10,552'CTM pumping frequent Provis gel sweeps, chasing each sweep up into 3.5" ;tubing. Lightly tag IBP at 10,552'CTM. PU 10' and flag coil. Chase sweep into 3.5 ". RBIH to flag. Chase final gel sweep OOH at 80 %. MU 2.1" BDN. RIH to flag and correct to 10538.5'. PUH flag pipe © 10390'. « <Continued on 09/08/2011>>> 9/8/2011 CTU #9 1.75" CT. Objective: FCO, Carbolite Dump « <Continued from ; 09/07/11>>> 'RIH to coil flag at 10,540'. Lay in 1900 Ibs of Carbolite. Wait two hours for Carbolite to settle. Tag TOS at 10,395'. Wait one hour for Carbilte to settle. Tag TOS at 10,394'. POOH pumping 60/40 freeze protect. RDMO. «<Job Complete» ** *Performed "Control of Hazardous Substances" Audit. CTU #9 is fully compliant. 9/13/2011 IT /I /0= 420/530/0 Temp. = SI Assist Slickline with injectivity test (Frac treatment) { : Pumped 75 bbls crude down tbg. Established LLRT of 4.9 bpm @ —2800 psi see log for details. FWHP's= 1120/520/0 Slick -line on well at departue 9/13/2011 * * *CONT. FROM 09/12/11 WSR * ** (Frac) RAN 3 -1/2" X -LINE W/ 3 -1/2" X- CATCHER & LOC. X- NIPPLE @ 10193' SLM/10189' ELM TAG TOP OF FRAC SAND W/ 2.50" LIB @ 10385' SLM /10381' ELM LRS LOADED TUBING W/ 75 BBLS CRUDE ** *CONT ON 09/14/11 WSR * ** 9/13/2011,T/I/O= 280/520/vac. Temp= SI. TBG FL. (for slickline). TBG FL @ 2394 (between ,X nip & sta #4 (37 bbls). ALP @ 1980. AL shut @ casing valve. :SV,WV,SSV =C. MV =O. IA,OA= OTG. NOVP. 9/14/2011- * * *CONT. FROM 09/13/11 WSR * ** (Frac) DUMPED -1.45 GAL. OF SAND @ 10385' SLM/10381' ELM TOP OF SAND @ 10379' ELM ** *WELL LEFT SHUT IN, PAD -OP NOTIFIED * ** 9/15/2011 T /I/O= 560/540/vac Temp= S/I Injectivity Test ( Pre Frac) Pumped 10 bbls crude :down tubing to load. Captured the following rates & pressures for 5 minutes each w/ ;crude: 0.5 bpm @ 2000 psi, 1 bpm @ 2350 psi, 2 bpm @ 2520 psi, 3 bpm @ 2700 psi, 4 bpm @ 2900 psi, 5 bpm @ 3160 psi. SV, WV, SSV= S/I MV= 0 IA & OA= OTG FWHP's= 1350/540/vac 9/20/2011 ** *Job continued from 9 -19 -11 WSR * ** T /I /0= 750/530/0 Pumped 2.5 bbls DSL down the IA to pressure up to 3500 psi. Pumped an additional 8.5 bbls DSL down the IA maintain 3500 psi while SLB performed frac. * *Tags hung, IA & OA valves left open left open to gauges upon departure ** FWP's= 870/400/0 • • 9/20/2011 ? * * *SLB Frac Crew * ** Job Scope: Fracture Targeting Kuparuk C Sands « <InterAct `Publishing »> Spotted frac equipment and deployed tree saver on 9/19/2011 due to ; P weather forecast of 34 -42 MPH winds during day of planned treatment. Continue with ;rig up 9/20/11 Pump break down /step down test, Scour Stage, Data Frac. Datafrac - G 'analysis showed FG = 0.665, Teak -off coef = 0.002 Pump Frac at 20 bpm using 40# :x-link gel. Pad stage of 100 bbls. 1 PPA Flat stage 20/40 C -Lite ceramic proppant w. '2 gpt of L065 (Scale Inhibitor) Pumps tripped out/screen out during 1 PPA Flat stage. Sand top est — 100' above top perf "if" gel broke completely. 2372 Ibs in perfs, 4130 Ibs in TBG ** *Job suspended until CT FCO completed * ** 9/24/2011 'Continued from WSR 09 -23 -11 CTU 8 w/ 1.75" CT. Scope; FCO ;finish rig up, change packoff and chain inspection, trim 100' of pipe. MU BHA; 1.75" '.ctc, dfcv, two stingers, nozzle (oal=9.06'). RIH jetting KCI w/ GeoVis sweeps to !6000'. Jet carbolite OOH. RIH and jet carbolite to 9074'. * *job continued on WSR 09-25-11** 9/25/2011' Continued from WSR 09 -24 -11 CTU 8 w/ 1.75" CT. Scope FCO. Continue jetting from 9074 to 10300' chase last gel sweep to surface. RIH w/ 2.188' ctc, dfcv, rup sub, PDS MGR, CCL inside 2.375 carrier, 2.25" x -o, 2.5" nozzle to ;10330' and did not tag. Pulled heavy. Logged from 10050' to 8800'. POH. RIH w/ 1.75" JSN assy holding 400 psi whp. Cleaned out frac sand to 10390' ELMD using KCI w/ GeoVis sweeps. POH chasing carbolite to surface. FP 2000' w/ McOH. Recovered 'a ton' (lots) of carbolite. * *job complete ** !(RD continued on WSR 09- 26 -11) 9/26/2011: Continued from WSR 09 -25 -11 CTU 8 Rig down 11/4/2011 ; ** *WELL S/I ON ARRIVAL * ** :RN SLICKLINE UNIT 4517 * * *CONT. ON 11/5/11 WSR * ** 11/5/2011 * * *CONT. FROM 11/4/11 WSR * ** DRIFT TO 10350' SLM, W/ 2.50" DUMMY GUN, S.BAILER (retrieved sand) ;CALIPER TUBING FROM 10340' SLM TO SURFACE (no data due to metal shavings) i RAN 3 -1/2" X -LINE, 3 -1/2" CATCHER SUB..S /D @ 10086' SLM (APPEARS TO BE !SLIDING SLEEVE) FELL THROUGH, ATTEMPT TO LOCATE X- NIPPLES @ !VARIOUS DEPTHS W/ NO SUCCESS, PUH AND LOCATE SLIDING SLEEVE, S/D !@ 10086' SLM. (10084' MD/ 10076' elm as per 08 -29 -2011 memory log = -10' correction) Tag depth = 10350' slm - 10' = 10340' log depth. * * *CONT. ON 11/6/11 WSR * ** 11/5/2011':T/I/O= 500/160/0 Temp =SI Injectivity Test (Frac Treatment) Pumped 2.8 bbls meth ! ;down Tbg. Tbg pressured up to 3000 psi. Monitored pressure for 5 mins Tbg lost i :1100 psi. Final WHPs= 550/160/0. SV, WV, SSV Shut. MV, IA, OA Open. 11/6/2011 * * *CONT. FROM 11/5/11 WSR * ** RAN 2.25" PUMP BAILER TO 10350' SLM (recovered —1 gallon of sand) ** *WELL S/I ON DEPARTURE * ** 11/20/2011 CTU #9 w/ 1.75" CT (CTV =35.6) Objective: Frac sand CO /add perfs MIRU from 13 -15 • • 11/21/2011' CTU #9 w/ 1.75" CT (CTV =35.6) Objective: Frac sand CO /add perfs RIH w/ 2.70" BDN (drift) on SWS MGR/CCL to tag at 10336' CTM holding 500 psi whp. POH logging to 9900'. POH maintaining 500 psi whp. Confirmed good DATA. RIH w/ 2.50" JSN clean out to 10400'. 11/22/2011:CTU #9 w/ 1.75" CT (CTV =35.6) Objective: Frac sand CO /add perfs MU 10' 2 -1/2" SWS perf gun. RIH and found PBD at 10372' which was 8' higher than planned. POH. RIH w /SLB logging tools and re -log from 10385 to 9500'. RIH w/ ;2.5" nozzle assy and clean out frac sand to 10400'. POH to surface In progress 11/23/2011 ; CTU #9 w/ 1.75" CT (CTV =35.3) Objective: Frac sand CO /add perfs ;Finish CO frac sand from 10400'. RIH w/ SWS 2 -1/2" x 10' perf gun to 10400', clean. 'Perforate 10370 -380' w/ SWS 2 -1/2" 2506PF gun @ 6 spf. POH. At surface ;confirmed guns fired ball has been recovered. Preform injectivity test (0.5 bpm 1745 `psi ) (1 bpm 2035 psi ) (2 bpm climb to 2400 psi and broke over to 2030 psi ) ( 3 bpm 2159 psi ) (4.3 bpm 2239 psi ) (4.6 bpm 2383 psi ) «< Job complete »> 11/27/2011;( Heat frac tanks to 100*) Arrive on location / Heat 5 frac tanks to 100 *. WSR continued on 11- 28 -11. 11/28/2011 T /I /0 =x ( Heat Frac Tanks / Heat Mineral oil / Hold backside pressure ) WSR continued from 11- 27 -11. Rig to Mineral oil tanker and heat to 90 *. Rig to Pop -Off `Skid / Press. Test and reset Pop -Offs. Standby for Frac crew to arrive. Job 'Postponed 11/29/2011: ** *SLB Frac Crew * ** Job Scope: Fracture Targeting Kuparuk C Sands « <InterAct Publishing »> Spotted frac equipment and deployed tree saver on 10/27/2011, '',planned to pump frac on 11/28/11 but found problems with delayed fluids system. ;Continue with rig up 11/29/11 Pump break down /step down test. No scour nessary. !Pumped bbl 35# gel Data Frac. Datafrac analysis showed FG = 0.631, leak -off coef i= 0.001, Pc 1337 psi. Eff= 76 %. Pump Frac at 20 bpm using #35 x -link gel. Pad ;stage of 125 bbls. 1 PPA Flat- stage -20/40 ceramic proppant in 100 bbls, Ramp 1 PPA - 4 PPA in 75 bbls. Ramp 4 PPA - 8 PPA in 100 bbls. 8 PPA Flat in 150 bbls. i9 PPA Flat in 200 bbls. 10 PPA Flat in 250 bbls. Flush w/ 33 bbls of 35# XL Gel, 32 bbls of 35# Non -XL, 46 bbls of LVT -200 (Mineral Oil) -8 bbls on surface, placing freeze protect at 2500'. 199,250 lbs of 20/40 C -Lite proppant behind pipe and 2827; Ibs in Liner. Est top of sand; once gel breaks out 9968' placing sand 402' above top pert. Est Pnet —450 psi, ** *Job Complete * ** 11/29/2011;T/1/0= x/1816/0 ( Assist Frac crew / Hold backside press. ) Rig to Pop -Off Skid / PT Pop -Offs to 3750 Psi. Standby for frac crew to arrive. Hold IA Press. to 3500 Psi ;during Frac. Bleed IA to 500 Psi. RDMO. FWHP= x/500 /0 . Frac crew on well © !departure. Operator notified. 12/2/2011 `CT -8, 1 3/4 ", Job Scope: Clean out frac sand. to IBP. MIRU, M/U 2" jetting nozzle BHA, PT lubricator. RIH at 80 fpm for chrome tubing. !Tag sand at 9295'. Cleanout carbolite with 15 bbl PowerVis sweeps, chased with KCL. Cleanout to 10200'. Chase sweep /prop to surface. Cleaned out to 10528' top of IBP, CTD, circ'd bottoms up, left gel sweep across perfs. « <JOB IN PROGRESS »> • • 12/3 /2011 :Continued from WSR of 12/02/11. CT -8, 1 3/4 ", Job Scope: Clean out frac sand. to IBP, fish IBP. iHang off, wait on Prop to settle for retag on IBP. RIH tagged prop @ 10008', C/O 1200' in 2 bites. attempt to bleed down well, flowing at increasing rate to 4 BPM, ;increase WH w /choke to 400 psi, pumping down CT & pulling to safety. Park coil at 1 5451'. Circ 0.5 bpm, hold 600 psi WHP. Flow rate from tank strap = 960 bpd. Get 'orders from Anc.Eng. to RIH and kill well and cleanout to IBP. RIH hold 800 psi WHP. Tag sand at 9975'. Circ bottoms up holding 800 psi. No gas. Cleanout to top 'pert at 10370'. Full returns until cleanout to top pert. 90% returns holding 300 WHP, then 50% returns with 60 WHP. Increase rate to 2.2 bpm and POH. Jet GLM's at ;7617' and 5458'. POH. Freeze protect 4 -1/2" tbg to 2500'. Freeze protect coil. POH. SIWHP 674, Lay out BHA. Secure well. RDMO. Move CTU to L -204. 1 «< Job Complete »> ... _... _. _. FLUIDS PUMPED BBLS 2040 2% KCL WITH SAFELUBW 200 POWERVIS 205 60/40 METH 400 FLOVIS 212 2% KCL 212 50/50 METH 21 DIESEL 213 DEAD CRUDE 195 CRUDE 1437 1% KCL 746 1% SLICK KCL 91 GEOVIS 7 NEAT METH 1147 YF135LG X -LINK GEL 33 35# LINEAR GEL 470 20# LINEAR GEL 72 LVT -200 (MINERAL OIL) 7701 TOTAL • • • FLUIDS PUMPED GALS 46,284 J917 WIDEFRAC YF100LG WIDEFRAC CROSSLINK 48,181 J920 WIDEFRAC 100LGD+ 540 B882 SLURRY, GUAR POLYMER 69 F103 SURFACTANT 133 L64 CLAY STABILIZER 67 L65 SCALE INHIBITOR 1.45 SAND 95,275.45 TOTAL FLUIDS PUMPED LBS 440 J475 BREAKER (CAPSULATED 55 J218 BREAKER (POWDER) 30 M275 MICROBIOCIDE 20 J134 ENZYME BREAKER 203,080 20/40 C -LITE PROPANT 1900 CARBOLITE 205,525 TOTAL .TRIM = ' 4-1/16" CM/ " WELLI = 11" FMC • SAFONOTES: WELL > 70° @ 10514'. ACTUATOR = LEO S-125 KB. ELEV = 63.9' 60. LEV ..: ---- ' 67.i5 1 _ KOP ' - - - - --3-60; .... -H 1011' j--I9-518" TAM PORT COLLAR 1 Max Angle; b. d io691. Ditigil roD .....----- 10361' 1 1 I 2213' H4-1/2" HES X NIP, ID= 3.813" 1 Datum TVD = 6700' SS 120" CONDUCTOR, 215.5#, A-53, ID = 7 H 108' I 6414' H4-1/2" X 3-1/2" XO, ID = 2.997' 1 19-5/8" CSC, 40#, L-80 BTC, ID = 8.835" ---1 4318' GAS LIFT MANDRELS ST MD TVD DEV TYPE VLV LATCH PORT DATE 4-1/2" MG, 12.6#. 13CR-80 VAM TOP, —1 5414' .0152 bpf, ID= 3.958 1/ 4 5458 3807 58 KGB-2 DOME INT 16 12/06/11 " -........ ip 3 7617 5007 53 KGB-2 SO INT 20 12106/11 IT' LNR, 26#, L-80 TO X0 TO L-80 8TC-M —1 6676' 2 8554 5601 51 KGB-2 O INT 0 09/04/11 • 1 9994 6550 52 KGB-2 "DMY INT 0 10/04/07 17" HES ES CEMENTER H 7166' I *STA #1 = DMY HAS EXTENDED PACKING MI Minimum ID = 2.813" @ 10085' 10084' 1__13-1/2" XD DURO SLD SLV, ID = 2.813" 1 3-1/2" XD DURO SLIDING SLEEVE 10107' 1_13-1/2" HES X NIP, ID = 2.813" 1 3-1a" HES SY IVPHONY PLUS GUAGE CARRIER H 10128' I w/ CABLE TO SURFACE IN tA 10148' 1-13-1/2" X 4-1/2" XO, ID = 2,960" 1 2 12 10150' H7" X 4-1/T BKR S-3 PROD PKR, ID = 3.870" I 10164' —14-1/2" X 3-1/2" X0, ID = 2.960" 1 1 10175' 1__13-1/2" HES X NIP, ID = 2.813" 1 I 10196' 3-1/2" HES X NIP, ID = 2.813" I 10213' _i_jr. X 5" BKR ZXP LTPw / TIEBK SLV, ID = 4.410" 1 3-1/2' TBG, 9.3#, 13CR-80 VAM TOP, 10219' .0087 bpf, ID = 2.992" 10219' 3-1/2" WLEG, ID = 2.992" L10211' HERM NOT LOGGED ON XX/XX/XX I 10234' Lir X 5" BKR HMC LNR HGR, ID = 4.440" 1 17" BKR GEN II VVHIPSTOCK (07/10/07) H 10358' 10241' I_15" X 4-1/2" XO ,1D = 3.950" PERFORATION &MARY MIL LOUT WINDOW (S-125) 10358' - 10371' REF LOG: SWS AND VISION ON 07/14/07 • ANGLE AT TOP PERF: 61° tE 10370' 1 10379 ' ELM _ TOP OF SAND (09/14/11) Note: Refer to Production DB for historical perf data SIZE SPF INTERVAL Opn/Sqz DATE 20/40 CARBOLITE (09/08/11) 2-7/8" 6 10370 - 10450 0 07/26/07 10495' H 4 - 1 / 2 " MARKER JOINT w / RA TAG 2-1/2 6 10390 - 10530 0 07/16/07 ' _.-.r 2-1/2" 6 10580 - 10600 C 07/16/07 . ------ ------"- ■ 10550' 12.52' BKR IBP (08/30111) 2-112" 6 10650 - 10680 C 07/16/07 2-1/2" 6 10750 - 10920 C 07/16/07 . -------- ""• ' • • . -----, w , 1 11301' — 4-1/7' MARKER JOINT 2-1/2' 6 10970 - 11027 C 07/16/07 ■.......... -, - 'N w/ RA TAG 2-7/8" 6 10970 - 11035 C 07/27/07 2-7/8" 6 11085 - 11375 C 07/27/M PaTD 1 11528' 2-1Q'' 6 11345 - 11515 C 07/16/07 , . .. Nk■ I* l" LNR, 26#, L-80 BTC-M, .0383 bpf, ID = 6.276" H 10729' ####0 ###### 4 ##### 14-1/2" LNR, 12.6#, L-80 IBT-M, .0152 bpf, 0= 3.958" H 11615' DATE REV BY - COMMENTS DATE REV BY COMMENTS AURORA UNIT 07128107 N9ES ORIGINAL COMPLETION 09/20/11 JLJ/ PJC SAND DU1VP (09/14/11) WELL: S-125 10/04/07 KSBITLH GLV C/O & Masi ID CORRECTION 10/24/11 JNL/JIVO CORRECTED API NO. (09/29/11) PERK No: "2070830 01/19/08 ?/ PJC DRLG DRAFT CORRE-CTIONS 12/12/11 RCT/JIVID GLV C/O (12/M/11) API No: 50-029-23361-00 02/15/08 PRA/PJC PERFORATION CORRECTIONS SEC 35, T12N, R12E, 4227' FSL & 4502' FEL 09/20/11 MSS/PJC GLV 010(09/04/11) 09/20/11 WEC/ PJC SET IBPI CARBOLITE (08/30/11) 87 Exploration (Alaska) 15 -SEP -2011 207- Schkilberger 2.tr412 No. 5791 Alaska Data & Consulting Services Company: State of Alaska 2525 Gambell Street, Suite 400 Alaska Oil & Gas Cons Comm Anchorage, AK 99503 -2838 Attn: Christine Shartzer ATTN: Stephanie Pacillo 333 West 7th Ave, Suite 100 Anchorage, AK 99501 Well Job # Log Description Date BL Color CD F-45B BUTT -00013 PPROF W/ GHOST 29- Aug -11 1 1 M -21A BBSK -00093 SBHPS 31- Aug -11 1 1 MPC -19 BD88 -00155 IPROF 27- Aug -11 1 1 MPC-39 BUTT -00011 IPROF 26- Aug -11 1 1 MPC -36 BD88 -00154 IPROF 26- Aug -11 1 1 7 4 V -216 BD88 -00153 IPROF 25- Aug -11 1 1 S -125 BD88 -00156 PPROF W /DEFT & GHOST 29- Aug -11 1 1 04 -08 BD88 -00159 (PROF 1- Sep -11 1 1 0 4 -23A BBSK -00091 PPROF W/ DEFT 25- Aug -11 1 1 A-43 BG4H -00086 PPROF W /DEFT & GHOST 9- Sep -11 1 1 12 -04A BINC -00064 PPROF W/ DEFT 31- Aug -11 1 1 MPS -04 BCRC -00121 IPROF 8- Sep -11 1 1 P2 -10 AV1P -00105 PPROF W /DEFT & GHOST 10- Sep -11 1 1 Ilk PLEASE ACKNOWLEDGE RECEIPT BY SIGNING AND RETURNING ONE COPY EACH TO: BP Exploration (Alaska) Inc. Alaska Data & Consulting Services Petrotechnical Data Center LR2 -1 2525 Gambell Street, Suite 400 900 E. Benson Blvd. Anchorage, AK 99503 -2838 JU 2 6 'are r OPERABLE: Producer S -125 (PTD # 0830) Tubing Integrity Confirmed Page 1 of 1 Regg, James B (DOA) From: AK, D &C Well Integrity Coordinator [ AKDCWellIntegrityCoordinator @bp.com] s- 1 2 "1 li f( Sent: Wednesday, February 09, 2011 1:22 PM j To: Maunder, Thomas E (DOA); Regg, James B (DOA); Schwartz, Guy L (DOA); AK, OPS GC2 OSM; AK, OPS GC2 Field O &M TL; AK, OPS GC2 Wellpad Lead; AK, OPS Well Pad SW; AK, OPS Prod Controllers; Cismoski, Doug A; Engel, Harry R; AK, D &C Wireline Operations Team Lead; AK, D &C Well Services Operations Team Lead; AK, RES GPB West Wells Opt Engr; AK, RES GPB East Wells Opt Engr; Derrick, George (Mackie) M Cc: AK, D &C Well Integrity Coordinator; King, Whitney; Holt, Ryan P (ASRC) Subject: OPERABLE: Producer S -125 (PTD #2070830) Tubing Integrity Confirmed All, Producer S -125 (PTD #2070830) passed a TIFL on 2/7/2011 after returning the well to production confirming the gas lift valve check valves have seated and the well has tubing integrity. The well has been reclassified as Operable. Please call if you have any questions. Thank you, Gerald Murphy (alt. Torin Roschinger) Well Integrity Coordinator Office (907) 659 -5102 Cell (907) 752 -0755 Pager (907) 659 -5100 Ext. 1154 E 2U'1 From: AK, D &C Well Integrity Coordinator Sent: Friday, January 21, 2011 6:44 PM To: 'Maunder, Thomas E (DOA)'; 'Regg, James B (DOA)'; 'Schwartz, Guy L (DOA)'; AK, OPS GC2 OSM; AK, OPS GC2 Field O &M TL; AK, OPS GC2 Wellpad Lead; AK, OPS Well Pad SW; AK, OPS Prod Controllers; Cismoski, Doug A; Engel, Harry R; AK, D &C Wireline Operations Team Lead; AK, D &C Well Services Operations Team Lead; AK, RES GPB West Wells Opt Engr; AK, RES GPB East Wells Opt Engr; Derrick, George (Mackie) M Cc: AK, D &C Well Integrity Coordinator; Walker, Greg (D &C); Winslow, Jack L (ASRC) Subject: UNDER EVALUATION: Producer S -125 (PTD #2070830) TxIA Communication All, Producer S -125 (PTD #2070830) has confirmed sustained IA casing pressure above MOASP due to TxIA communication. The wellhead pressures were tubing /IA/OA equal to 2380/2390/240 on 1/19/2011. A cold TIFL failed on 1/19/2011. The well has been reclassified as Under Evaluation. The well may remain online while work is conducted to attempt to restore integrity. Plan forward: 1. Re -TIFL with a warm well 2. Evaluate for gas lift valve change out pending TIFL results. A TIO plot and wellbore schematic have been included for reference. Please call if you have questions or concerns. Gerald Murphy (alt. Torin Roschinger) Well Integrity Coordinator Office (907) 659 -5102 Cell (907) 752 -0755 Pager (907) 659 -5100 Ext. 1154 2/9/2011 OPERABLE: S-125 (PTD##207Q$30)~ing Integrity Restored • Page 1 of 2 Regg, James B (DOA) From: AK, D&C Well Integrity Coordinator [AKDCWeIIlntegrityCoordinator@bp.com] ~~ c -~/~~ Sent: Wednesday, June 09, 2010 11:51 PM ~~ To: Regg, James B (DOA); AK, OPS GC2 OSM; AK, OPS GC2 Facility OTL; AK, OPS GC2 Field O&M TL; AK, OPS GC2 Wellpad Lead; AK, OPS Well Pad SW; AK, OPS Prod Controllers; AK, RES GPB East Production Optimization Engineer; AK, RES GPB West Production Optimization Engineer; Cismoski, Doug A; Engel, Harry R; AK, D&C Wireline Operations Team Lead; AK, D&C Well Services Operations Team Lead; AK, D&C Well Integrity Coordinator; Schwartz, Guy L (DOA); Maunder, Thomas E (DOA) Cc: Quy, Tiffany; Prowant, Josh L (CH2M Hill); Holt, Ryan P (ASRC) Subject: OPERABLE: S-125 (PTD##2070830) Tubing Integrity Restored Follow Up Flag: Follow up Flag Status: Blue All, Producer S-125 (PTD #2070830) has passed an MITIA after installing dummy qas lift valves proving that tubing integrity is restored. The well has been reclassified as Operable and may return to production when operations is ready. Please call with any questions or concerns. Thank you, Gerald Murphy (alt. Torin Roschinger) ~W'~~ ~~;,Y ( 4; ~~~r Well Integrity Coordinator Office (907) 659-5102 Cell (907) 752-0755 Pager (907) 659-5100 Ext. 1154 From: AK, D&C Well Integrity Coordinator Sent: Monday, June 07, 2010 9:52 PM To: 'Maunder, Thomas E (DOA)'; 'Schwartz, Guy (DOA)'; 'Regg, James B (DOA)'; AK, OPS GC2 OSM; AK, OPS GC2 Facility OTL; AK, OPS GC2 Field 0&M TL; AK, OPS GC2 Wellpad Lead; AK, OPS Well Pad SW; AK, OPS Prod Controllers; AK, RES GPB East Production Optimization Engineer; AK, RES GPB West Production Optimization Engineer; Cismoski, Doug A; Engel, Harry R; AK, D&C Wireline Operations Team Lead; AK, D&C Well Services Operations Team Lead; AK, D&C Well Integrity Coordinator Cc: Janowski, Carrie; Quy, Tiffany; Wellman, Taylor T; Holt, Ryan P (ASRC) Subject: UNDER EVALUATION: 5-125 (PTD##2070830) Sustained Casing Pressure on the IA All, Producer S-125 (PTD #2070830) has been found to have sustained casing pressure on the IA. During the last proration, the well was shut in and IA pressure slowly built over time, exceeding MOASP on 6/5/2010 with wellhead pressures of 2280. /2200/0. Pressure was bleed from the IA and was seen to track with the tubing indicating TxIA communication. The well has been reclassified as Under Evaluation. Plan forward: ~-,(~- 1. Slickline install dummy gas lift valves .-1 ti ~~ ~ ~, 2. Fullbore pumping to MIT-IA to 3000 psi ~ ~'• > ~~~ = ~ ~~%~~, SCP = 2Ze0~s A schematic and TIO have been included for review. ~~ ~,~ P : .jp g~% ~`c~ ak ~~- C~ 4a ~ 7/20/2010 OPERABLE: 5-125 (PTD##2070830)~ing Integrity Restored • Page 2 of 2 Please let us know if you have any questions or concerns. Thank you, Gerald Murphy (alt. Torin Roschinger) Well Integrity Coordinator Office (907) 659-5102 Cell (907) 752-0755 Pager (907) 659-5100 Ext. 1154 7/20/2010 PBU S-125 PTD #2070830 6/7/2010 TIO Pressures Plot ~r~IL~Q r~ilC~ ~rOl~~l 1,~~Q 1~fell: ~-1 ~~ 037 ~r'10 ~~r~~~~7 ~ Q~ ~10~7 0 Q~r'2~~7 ~ ~~~0~~10 ~~~~~~1 ~ 0~~~7~~1 ~ ~ ~~ --~- T ~~ -f- IA -~ ~A 0~ Q~ Qn TREE= 4-1116" CIW WELLHE-AD= -ACTUATOR = 11" FMC LEO KB. ELEV = 63.9` BF. ELEV = KOP = 61.25 300" Max Angle = 100° @ 10691' Datum MD = Datum TVD =~ 10361' 6700' SS ~P ZO" CONDUCTOR, 215.5#, A-53, ID = ? 10$' 9-518" CSC, 40#, L-80 BTC, ID = 8.835" 431$ 4-1/2" TBG, 12.6#. 13CR-80 VAM TOP, ••__. 5414` 0152 bpf, ID = 3.958" 7" LNR, 26#, L-80 TCII XO TO L-80 BTC-M 6676` 7" HES ES CEMENTER ~ 7166` MIIlICT1UC°CI ~®= 2.$'~ 3° ~ 7 ~~}$rJ~ 3-112" XD DUR®SLIDING SLEEVE 3-1/2" HES SYMPHONY PLUS GUAGECARRiER 1012$' w / CRBLE TO SURFACE IN IA SA~NOTES: WELL> 70° @ 10514'. 1011' -~9-518" TAM PORT COLLAR -(-213° ~ 4-1/2" HES X NIP, ID = 3.813" 5414-~4-1t2" X 3-1/2" XO, ID = 2.992" GAS LIFT MANDRELS ST MD TVD DEV TYPE VLV LATCH PORT DATE 4 5458 3807 58 KGB-2 DOME INT 16 10/04!07 3 7617 5007 53 KGB-2 DMY INT 0 07(27(07 2 8554 5601 51 KGB-2 SO INT 20 08(24/09 1 9994 6550 52 KGB-2 *`DMY INT 0 10(04/07 "SIA #1 = UMY HAS tX I tNUtU PHC:KINCi **NOT NEEDED: SET BY MISTAKE, INTENDED FOR S-43 100$4' 3-1(2" XD DURO SLD SLV, ID = 2.813" 101OT 3-1/2" HES XNIP, ID = 2.813" 3-1 /2" X 4-1 /2" XO, ID = 2.960" 7" X 4-1/2" BKR S-3 PROD PKR, ID = 3.870" 4-112" X 3-1/2" XO, ID = 2.960" 3-1/2" TBG; 9.3#, 13CR-80 VAM TOP, .0087 bpf, ID = 2.992" 7" BKR GEN II WHIPSTOCK {07/10(07) PERFORATION SUMMARY REF LOG: SWS AND VISION ON 07/14/07 ANGLE AT TOP PERF: 61 ° @ 10370' Note: Refer to Production DB far historical perf data SIZE SPF INTERVAL OpnlSgz DATE 2-7/8" 6 10370 - 10450 O 07/26!07 2-1/2" 6 10390 - 10530 O 07/16/07 2-1/2" 6 10580 - 10600 O 07/16/07 2-1/2" 6 10650 - 10680 O 07/16/07 2-1/2" 6 10750 - 10920 O 07/16107 2-1i2" 6 10970 - 11027 O 07/16/07 2-718" 6 10970 - 11035 O 07/27/07 2-7/8" 6 11085 - 11375 O 07/27/06 2-112" 6 11345 - 11515 O 07116!07 7" LNR, 26#, L-80 BTC-M, .0383 bpf, ID = 6.276" 10175' )J 3-112" HES X NIP, ID = 2.813" 10196' ~~ 3-1/2" HES X NIP, ID = 2.813" 10213` ~ 7" X 5" BKR ZXP LTP w / TIEBK SLV, ID = 4.410" 10219' ~ 3-112" WLEG, ID = 2.992" CrW__~ F1MD NOT LOGGED 10234' 7" X 5" BKR HMC LNR HGR, ID = 4.440" 10241' ~X 4-1/2" XO ,ID = 3.950" MILLOUT WINDOW {5-125) 10358' - 10371' 9 10t~g5' ~ 4-1 /2" MA RKER JOINT w/RA TAG 11301' ~4-112" MARKERJOINT w / RA TAG I PBTD t ~4-112" LNR, 12.6#, L-80 IBT-M, .0152 bpf, ID = 3.958" DATE REV BY COMMENTS DA 07/28!07 N9FS ORIGINAL COMPLETION 10/04107 KSB/TLH GLV CIO & MIN ID CORRECTION 01119/08 ?/ PJC DRLG DRAFT CORRECTIONS 02/15/08 PRAIPJC PERT 09/29/09 BSE/SV GLV AURORA UNIT WELL: 5-125 PERMf>- No: 2070830 API No: 50-029-23023-00 SEC 35, T12N, R12E, 4227' FSL & 4502" FEL BP 6cploration (Alaska) • ~ ~'~ '°~`'`r` °G ~ ~ ~~1 ~, .~ y ~ ~=~ ~.~~ vs ~ '' >~ , MICROFILMED 6/30/2010 DO NOT PLACE ANY. N EW MATERIAL UNDER THIS PAGE C:\temp\Temporary Internet Files\OLK9\Microfilm_Marker.doc ~ ~ ~"~-'~,, DATA SUBMITTAL COMPLIANCE REPORT 7/6/2009 Permit to Drill 2070830 Well Name/No. PRUDHOE BAY UN AURO S-125 Operator BP EXPLORATION (ALASK/y INC API No. 50-029-23361-00-00 MD 11623 ND 6750 Completion Date 7/28/2007 Completion Status 1-OIL Current Status 1-OIL UIC N REQUIRED INFORMATION Mud Log No Samples No Directionai Survey Yes DATA INFORMATI~N Types Electric or Other Logs Run: MWD DIR / GR, GR / RES / PWD / AZI-DENS / NEU / Sonic, Stethosc (data taken from Logs Portion of Master Well Data Maint Well Log information: Log/ Electr Data Digital Dataset Log Log Run Interval OH / iy e mearrmt numoer Name aca~e mea~a rvo start stop cn rtecervea ~omments ED D Asc Directional Survey 0 11623 Open 8/9/2000 Rpt Directional Survey 0 11623 Open 8/9/2007 ED D Asc Directional Survey 0 10743 Open 8/9/2007 PB 1 Rpt : Djrectional Survey / 0 10743 Open 8/9/2007 PB 1 D C Lis 15594u Induction/Resistivity 140 10742 Open 10/26/2007 P61 LIS Veri, GR, ROP, FET, DRHO, NPHI w/PDS , graphics Log Induction/Resistivity 25 Blu 1 140 10707 Open 10/26/2007 P61 MD EcoScope Vision Service 7-Ju1-07 Log Induction/Resistivity 25 Blu 1 140 10707 Open 10/26/2007 P61 TVD EcoScope Vision Service 7-Jul-W ~ I lFD C Lis 15612 duction/Resistivity 140 11618 Open 10/26/2007 LIS Veri, GR, ROP, FET, DRHO, NPHI w/PDS graphics og Induction/Resistivity 25 Blu 1 100 1623 Open 10/26/2007 MD Vision Service 14-Ju1- 2007 ~ Log Induction/Resistivity 25 Blu 1 100 1623 Open 10/26/2007 ND Vision Service 14-Ju1- 2007 D C Lis 15650~Induction/Resistivity 140 10742 Open 11/9/2007 P61 LIS Veri, GR, ROP, FET, RPM, DRHO, NPHI REVISED ~ ~ DATA SUBMITTAL COMPLIANCE REPORT 7/6/2009 Permit to Drill 2070830 Well Name/No. PRUDHOE BAY UN AURO S-125 Operator BP EXPLORATION (ALASKIy INC API No. 50-029-23361-00-00 MD 11623 ND 6750 Completion Date 7/28/2007 Completion Status 1-OIL Current Status 1-OIL Well Cores/Samples Information: Sample Interval Set Name Start Stop Sent Received Number Comments ADDITIONAL INFORMATION Well Cored? Y N~ Daily History Received? ~ N ~ Formation To s ~.'" Chips Received. .~1'I~~ p Analysis Y`715^ Received? UIC N Comments: Compliance Reviewed By: Date: l ~ ~ OPERABLE: S-125 (PTD #207~0) Tubing Integrity Confirmed • Page 1 of 2 Regg, James B (DOA) From: NSU, ADW Well Integrity Engineer [NSUADWWeIIlntegrityEngineer@BP.com] Sent: Thursday, July 09, 2009 3:56 PM To: Regg, James B(DOA); Schwartz, Guy L(DOA); Maunder, Thomas E(DOA); Rossberg, R Steven; Engel, Harry R; GPB, Area Mgr West (GC2/WRD); GPB, GC2 OTL; GPB, GC2 Wellpad Lead; NSU, ADW Well Operations Supervisor; GPB, Well Pad SW; Collins, Patrick J; GPB, Wells Opt Eng; GPB, Optimization Engr; GPB, Prod Controllers; GPB, Gas Lift Engr Cc: Sala, Jaycen (CH2MHill); NSU, ADW Well Integrity Engineer Subject: OPERABLE: S-125 (PTD #2070830) Tubing Integrity Confirmed All, /' Well 5-125 (PTD #2070830) passed a TIFL after returning the well to production confirming the gas li ve checks have seated and the weli has tubing integrity. The well has been reclassified as Operable. Please let us know if you have any questions. Thank you, Anna ~Du6e, ~P. E. Weti tntegrity Coordinator GPB Welis Graup Phone: (9d7} 658-5702 Pager: (9Q7) 659-5100 x1154 From: NSU, ADW Well Integrity Engineer Sent: Saturday, 7uly 04, 2009 7:13 PM To: 'Regg, James B(DOA)'; Schwartz, Guy (DOA}; 'Maunder, Thomas E(DOA)'; Rossberg, R Steven; Engel, Harry R; GPB, Area Mgr West (GC2JWRD); GPB, GC2 OTL; GPB, GC2 Welipad Lead; NSU, ADW Well Operations Supervisor; GPB, Weil Pad SW; Collins, Patrick J; GPB, Welis Opt Eng; GPB, Optimization Engr; GPB, Prod Controllers Cc: Quy, Tiffany; NSU, ADW Well Integrity Ertgineer Subject: UNDER EVALUATION: 5-125 (PTD #2070830) Sustained Casing Pressure on the IA All, Well S-125 (PTD #2070830) has been found to have sustained casing pressure on the IA. Well the GC2 Facility was first shut-in, the high IA pressure was suspected to be from stacking out the tubing and IA with gas lift. On 6/14/09, the IA pressure was bled and confirmed the ~ checks in the gas lift valves are open. After this bleed, the IA pressure continued to slowly build. The wellhead pressures were SSV/ 2360/0 on 7/2/09. The well has been reclassified as Under Evaluation. Once the GC2 Facility is online next week, the well wifl be returned to production and another TIFL will be conducted. A TIO plot and wellbore schematic have been included for reference. 8/31 /2009 OPERABLE: 5-125 (PTD #207~30) Tubing Integrity Confirmed ~ Page 2 of 2 Please let us know if you have any questions. Thank you, Anna ~Du6e, 2~. E. Wefi integrity Coardinator GPB Welis Group Phone: (907) 659-5102 Pager: (807} 659-5100 x1154 8/31 /2009 . 5-125 (PTD #2070830) TIO Plot ~,~L~~_'i \.~JJJJ ~JJJJiJJJJJJJ.aJJJJJJJJJJ.aJJJJJJJJJJJJJJJJ 3,000 --~- T bg ~ ^ 1,4 2,000 ~ ~ ~ -~- OA ODA ~ OOOA 1,000 ~ --~- On 04104109 Odl11109 04/1$!09 04I25/09 05/02/09 05l05109 05l16~09 05/23/09 05J30109 061D6l09 06113I09 06?20I09 06127I09 ~ • _ ~ ~ ~ ~~~~ BP Exploration (Alaska)ina ~ ~ Attn: Weli Integrity Coordinator, PRB-20 ~" Post Office Box 196612 ~ Anchorage, Alaska 99519-6612 ~ June 25, 2009 ;- ,= < <,:-T, .. ,=;~ ~,._ ~ z, _ ~~' ~= ~-~ ~~~ ~ Y. 2~0~ Mr. Tom Maunder Alaska Oil and Gas Conservation Commission F;,e~~F~~ ~~~ ~_ ~~~ ~~c~eo ra~r~sN~,~~ 333 West 7m Avenue e~~~;~~~€~~,~ Anchorage, Alaska 99501 ~b~- OS~ Subject: Corrosion Inhibitor Treatments of S-Pad ~- Dear Mr. Maunder, ~ 1 ~ °~' Enclosed please find a spreadsheet with a list of wells from S-Pad that were treated with corrosion inhibitor in the surface casing by conductor annulus. The corrosion inhibitor is engineered to prevent water from entering the annular space and causing external corrosion that could result in a surface casing leak to atmosphere. The attached spreadsheet represents the well name, top of cement depth prior to filling and volumes of corrosion inhibitor used in each conductor. As per previous agreement with the AOGCC, this letter and spreadsheet serve as notification that the treatments took place and meet the requirements of form 10-404, Report of Sundry Operations. If you require any additional information, please contact me or my alternate, Anna Dube, at 659-5102. Sincerely, Torin Roschinger BPXA, Well Integrity Coordinator • BP Exploration (Alaska ) Inc. Surface Casing by Conductor Annulus Cement, Corrosion inhibitor, Sealant Top-off Report of Sundry Oparations (10-404) S-pad * i~ oACe f/25/2009 Well Name PTO a Initial top of cement Vol. of cement um ed Final top of cement Cement top oft dale Corrosion inhibitor Corrosion inhibitod sealant date ft bbls ft na al S-Ot8 1952020 025 NA 025 NA 2.6 5/30/2009 S-02A 1941090 025 NA 025 NA 1.7 5/25/2009 S-03 1817900 1325 NA 1325 NA 92.65 5/20/2009 5-Oa 1830790 0 NA 0 NA 0.9 5/25/2009 S-0SA 1951890 0 NA 0 NA 0.9 5/26/2009 5-06 1821650 0 NA 0 NA 0.9 5/26/2009 S-07A 1920980 0 NA 0 NA 0.9 5/26/2009 S-08B 2010520 0 NA 0 NA 0.85 5/27/2009 S-09 1821040 1.5 NA 1.5 NA 9.4 5/31/2009 S-10A 1911230 0.5 NA 0.5 NA 3.4 5/31/2009 S-118 1990530 0.25 NA 025 NA 1.7 5/27/2009 S-12A 1851930 025 NA 025 NA 1.7 6/t/2009 5-13 1821350 8 NA 8 NA 55.3 6/1/2009 5-15 1840170 025 NA 025 NA 3 6/2/2009 S-17C 2020070 0.25 NA 025 NA 2.6 6/1/2009 S-18A 2021630 0.5 NA 0.5 NA 3 6J2/2009 S-19 1861160 0.75 NA 0.75 NA 22 5/79/2009 S-20A 2010450 025 NA 025 NA 1.3 5/19/2009 5-21 7900470 0.5 NA 0.5 NA 3.4 5/25/2009 S-22B 1970570 0.75 NA 0.75 NA 3 5/19/2009 S-23 1901270 025 NA 025 NA 1.7 5/25/2009 S-248 2031630 0.5 NA 0.5 NA 2.6 5/25f2009 S-25A 1982140 0.5 NA 0.5 NA 2.6 5/25J2009 S-26 1900580 0.75 NA 0.75 NA 3.4 5/26/2009 5-278 2031680 0.5 NA 0.5 NA 2.6 5/31/2009 S•288 2030020 0.5 NA 0.5 NA 2.6 5/37/Z009 S-2&A~7 1960120 0 NA 0 NA 0.85 5/27f2009 5-30 1900660 0.5 NA 0.5 NA 5.1 5/31/2009 S31A 1982200 0.5 NA 0.5 NA 3.4 5/26/2009 S-32 1901490 0.5 NA 0.5 NA 3.4 5/31/2009 S-33 1921020 0.5 NA 0.5 NA 4.3 5/26/2009 S-3a~ 1921360 0.5 NA 0.5 NA 3.a 5/31/2009 5-35 1921480 0 NA 0 NA .e5in 5/31/2009 S36 1921760 0.75 NA 0.75 NA 4.25 5/27/2009 5-37 1920990 1.25 NA 125 NA 17.9 5/27/2009 S3B 1921270 0.25 NA 025 NA 102 5/27/2009 S-4t 1960240 1.5 NA 1.5 NA 71.1 5/3012009 S•42 l960540 0 NA 0 NA 0.9 5/30/2009 S-43 1970530 0.5 NA 0.5 NA 17 5/28/2009 S-44 1970070 025 NA 025 NA 1.7 5/28/2009 S-700 2000780 2 NA 2 NA 21.3 5/29/2009 S-101 2001150 125 NA 125 NA 17.9 5/29/2009 S-102L7 2031560 125 NA 125 NA 11.1 5/31/2009 5-103 2001680 1.5 NA 1.5 NA 17.9 5/18/2009 5-104 2001960 1.75 NA 1.75 NA 15.3 5/20/2009 S-105 2001520 4 NA 4 NA 32.7 5/20/2009 5-106 2010120 1625 NA 16.25 NA 174.3 6/2/2009 S-7o~ 2011130 225 NA 225 NA 2a.9 5/18/2009 S-~oe 2011000 3.5 NA 3.5 NA 40 5/30/2009 S-109 2022450 2 NA 2 NA 213 5/30/2009 S-110 2011290 it.75 NA 11.75 NA 98.6 5/30/2009 5-711 2050510 2 NA 2 NA 19.6 5/30/2009 S-112 2021350 0 NA 0 NA 0.5 5/30/2009 S-713 2021430 1.75 NA 1.75 NA 22.7 5/18/2009 5-714A 2021980 125 NA 125 NA 102 5/30/2009 S-115 2022300 2.5 NA 2.5 NA 272 5/29YL009 5-116 2031810 1.5 NA 1.5 NA 13.6 5/28/2009 S-7t7 2030120 1.5 NA 1.5 NA 15.3 5/29/2009 5-118 2032000 5 NA 5 NA 76.5 5/28/2009 5-119 2041620 1 NA 1 NA 52 5/30/2009 S-120 2031980 5.5 NA 5.5 NA 672 5/29/2009 S-121 2060410 4.5 NA 4.5 NA 53.6 5/28/2009 S-~22 2050810 3 ~ NA 3 NA 21.3 5/29/2009 S-723 2041370 1.5 NA 1.5 NA 20.4 5/26/2009 S-124 2061360 1.75 NA 1.75 NA 11.9 5/26I2009 5-125 2070830 225 NA 225 NA 20,4 5/28/2009 S-t26 20770970 125 NA 125 NA 15.3 6/7/2009 S-200 1972390 125 NA 125 NA 74.5 5/28/2009 5-201 2001840 0 NA 0 NA 0.85 6/19/2009 5-213A 2042730 2 NA 2 NA 13.6 5/29/2009 5-215 2021540 2 NA 2 NA 1B.7 6It/2009 5-216 2001970 4.75 NA 4.75 NA 51 5/29/2009 S-217 2070950 025 NA 025 NA ~.7 6/1/2009 Sd00 2070740 2 NA 2 NA 9.4 5/28/2009 S-a01 2060780 16 NA 16 NA 99.5 6/2/2009 5-504 0 NA 0 NA 0.85 5/28/2009 ~ p Y.~. s~~r~ .T ~ z Z~ f~ Safety Valve & Well Pressures Test Re ort ReviewedB~ l Comm Pad: -'B~_S InspDt: 2/18/2008 Inspected by John Crisp Interval InspNo svsJC~~08022 1 1 40)34 Reluted Insp: Field Name PRUDHOE BAY Operator BP EXPLORATION (ALASKA) INC Operator Rep Rich Vincent Reason 180-Day `~ r~ I _. __ . - - -- - - ~ _, . _.- - - nspector - - - - -- . __ ___ _ ~ ~ Well Data ~ ~ Pilots ~~ ~ SSV SSSV ~Skutln Dt Well~':~'ype - i~Fe1l Pxessures ~as~Lift Waiver~ ~!~ Comments:~ ~~~ ~; _ _-- - - - - - .,_ _ _ . _. _ -- - ---- --'- -- ---~--~ ' ~ T ~ ~- =--~ ~~~ --- -----... Well Permit Separ Set UP Test Test Test Date St OiI,WAG,GINJ, Inner Outer 'I'ubing Number Number P51 PSI Trip Code Code Code GAS,CYCLE, SI PSI PSI PSI Yes/No Yes/No S-IOQ S-103 S-105 S-106 ~ S-108 S-109 S 113 S-115 S-117 S-12t 5-122 S-125 ~ -- S-17 S-l8 S 213 ~ S =44 2000780 ~ - - 20U1680 ' _- --~ ,, 20U1520 ~ 1 S 3 ~ - ~ 153 ~ - 153 _ 125 ~ -- . , 125 - 125 i 125 - 120 ~ ___- 110~ __ ~ P I -- Y ~ ~ --- ~ P ~ _- P - P -- P --- I I _-_ a L ' --- 7 - - - - ~ __ - ----- -~ 1-OIL --- ~ - - ' 1-0(L - - - - 1-OIL -- ~-'~ -- _ 1 -- -- ~ -- -- ~ ~ - -- _._ ~ - ~ -_ r ~ -- -- -_f --. T _._ ~ ~ - - I -- - - - ~ - - - --- i 2010120 ~ i - -- 2011000 --- ~ 2022450 J -- 153 - 153~ 153 ~ 125 f ~ l25 125 - 40 -- l25 l25 --- 30 -~ P P P -P ~ -- --- ~ - ----- - - -- --- l-0lL I -0IL - r- 1-01 - -- --- ~ _ ~- -- ~ - --- ~ --- - -- - - ; - -- --1 ~ ~ - ~ - --~ _ - _. _- ~ j 2021430 ~ - ----- --- 2022300 1 ' --- ---- ~ 2U3012U i---- - l53 ~ . 153 I ' l53 , ---{ l25 i -- I25 ~ -- - 125 ~ _ - --- I25 120 G-- -- !]35 --- P ~ P~ -- P -- Y i --P ! P -- P -- I ---- , ' -- - ------- - - ~ _Ol - ~ --- ~-~~ i O1L j - - --- I-OIL ----~ ; -----~--- -~ -- ~ ~ ( ---{ ~------ - i _ - --- ~ +------ _ ~ -_ . .~ ' , - -_- _. --- ` 2060410 _I -...----- - l53 i - - 125 - 125 - _ P - -- --- P - --- - ----- -- - - _- .-_ 1-0lL ~ ~- _ ._.. I -- - I I - 1- I 2050810 -- -+------- -- ----~--2070830 ~ 153 -- 153 l25 ---- 125~ t10 I15 -- -- Y -- P -- ~ Y ---- P --- - _ -- - ~ - --- . ------- 1-0lL --- 1-OIL . _. -- ----- -.. --- - ~ - - __ ..- -- i . _. _ ~ ~ __ _ r -- - _ ~ 2020070 -+ . ---- --- ~ ~ 153 ~ - ~ I 25_ ~ I l 0 P I ~ P ~ - - - - - 1-OIL -- _.-~ -._._- - - a - - - - ' - -. I 2021630 -~- --- --- ~ 2042130 IS3 ~- + 1~3 125 ~ -- ~ 125 i ~ 100 - --~ 125 ~ P --J P ~ P -- Y I - _ _ _ --- 1-OIL ----- t-OIL - _ --~ - - --- ; j ~ ---- t ~ - --- -- - _. -.__ ~ _i,__1970060 _ 153 125~ I0 _ P P __ _ ~ __ ~ _ l -OIL _-- -L- - ~ __ - - -- - B C A A i - ---~ - ---1 i __. __- _.: ----~ - - - ~ -__-- -__ .-- -- _-' • -- -- - - - ~1I -- _ _ _ ._ _ --1 I --- __ - - - -1 i -- -- -- - -~ - _---- ..-- -._ - ----~ I _ -- -- - -- ~I -- - --- _- -- -- -I -- --- ------ -~ Commencs Perf'ormance ' _ - .---- - -- - C~.~Q. 3~' - .~~~-4,ci~l,l4 -~R ~0 +~~feh.J `~ r----------- __ _ -.--- - ~'-' ~ ~~ Wells Components Failures Failure Rate ~ af ~r; N~.ti ~v~~.~~,- ,~ l e,~- ~~~,,~~ . ~ I ~ ~ 16 .-- 32---- --1--_----- 3.12%- - ~ ~GIS~ lhtl~~~.~-cc..~ ;1.~s~~- , / ~ -- ----------- ------ ---...-----._~ Monday, February 25, 2008 11/OSl07 Se~tumberg~r Schlumberge~-DCS 2525 Gambell St, Suite 400 Anchorege, AK 99503-2838 ATTN: Beth NO. 4478 Company: Alaska Oil & Gas Cons Comm AHn: Christine Mahnken 333 West 7th Ave, Suite 100 Anchorege, AK 99501 Field: Well Job # Log Description Oate BL Polaris Aurora Borealis Color CD S-217 11594528 MDT 10N2/07 1 5-217 17594528 USIT - O 10N5107 1 5-125PB1 REVISE~ 40015467 OH MWDILWD EDIT ~ ~ 07107107 1 Z-102 40015187 OH MWDILWD EDIT OS112/07 2 1 Z-102PB1 40015187 OH MWD/LWD EDIT ~ 05107/07 2 1 PLEASE ACKNOWLEDGE RECEIPT BY SIGNING AND RETURNING ONE COPY EACH TO: BP Exploration (Alaska) Inc. Petrotechnical Data Center LR2 1 - 900 E Benson Blvd. + ~„ ~~- ~~ ~('~~ ~i4~ Anchorage AK 99508-4254 ~ '~, t;~,.. }'s~ ~~"-' Date belivered~. ~ t D 1~~ ~ ' f f- a.'~.il.. ; ~U '~ ._:JSJ d _ , ~7 ~ ~ ..;Ci'. ~~. ..)~^~: ~ ~~ n~t , ~ 3f,i~m , . - \ : d ~i Schlumberger-DCS 2525 Gambell St, Suite 400 Anchorege, AK 99503-2838 ATTN: Beth Received by~. ~ 10/25/07 Scht~umberge~ NO. 4464 Alaska Data & Consulting Services Company: State of Alaska 2525 Gambeil Street, Suite ao0 Alaska Oil & Gas Cons tiomm Anchorage, AK 99503-2838 Attn: Christine Mahnken AT7N: eeth 333 West 7tn Ave, Suite 100 Anchorage, AK 99501 Field: P.Bay, Endicott, Aurora, Milm. Pt., Pt. Mac Wall _Inh i! Lnn DPSr.rintion Date 6L Color CD W-79AL1 11$90312 SBHP & TEMP - `- 09/29/07 17-19A 11855512 SBHP SURVEY 09/26/07 1 V-04 11855513 SBHP SURVEY L 09/27107 1 Z-21A 11594526 SBHP SURVEY 10l07/07 1 Z-03 11767142 LDL 10/01I07 1 05-38 11686787 LDL ~ 09/27/07 1 Y-29A 11855514 DDL 09/28/07 1 B-16 11676969 PRODUCTION PROFILE - ~ 10/12/07 7 Z-226 11594525 SBHP SURVEY •-~- 10/06107 1 Z-146 11849935 SBHP SURVEY (p 10102/07 7 P2-45A 11594529 SBHP SURVEY ~- C 10/16107 1 17-09 11846820 LDL J'fj j- 10H9/07 1 F-33 11661176 MEMORY SBHPS ~~ - 10/19/07 1 4-08/P-27 11630506 LDL ~ ^ 10/04I07 1 3-17FIK-30 11649961 MCNI ' - "~ / 04N7/07 1 1 MPB-50 40011604 OH MWD/LWD EDIT V j 02/27105 2 1 5-125 40015467 OH MWD/LWD EDIT ~'~-_ ~~ 07/14/07 2 1 F'LtASt AGKNUWLtUGt FitGtIF' I I3Y 5119N11V1i AIVU Kt 1 UKIVIIVIa VIVt l:UY7 tAl:F1 1 V: BP Exploration (Alaska) Inc. ~ , . , i Petrotechnical Data Center LR2-1 ~~ - Jr 900 E. Benson Blvd. ' ' "" ' / ` Anchorage, Alaska 99508 ;f ,ri , . ~ t; i'y Date Delivered: Alaska Data & Consulting Services 2525 Gambell Street, Suite 400 Anchorage, AK 99503-28 8 ATTN: Beth , Received by: ~ ~ ~,~ ~;i . '~, rs ' ~°{'` Sc6lam~erger Schlumberger-OCS 2525 Gambell St, Suite 400 Anchorage,AK 99503-2838 ATTN: Beth Well Job # Log Deseription NO. 4454 Company: Alaska Oil & Gas Cons Comm Attn: Christine Mahnken 333 West 7tN Ave, Suite 100 Anehoroge, AK 99501 Field: polaris Orion Borealis Date BL Color CD W-2/3 V-215 Z-108 11667175 77594497 77212828 MEM TEMP/PRESS SURVEY CH EDIT PDC GR USIT OH WIRELINE PEX EDIT ` 09/29/07 OM23107 02/05/06 1 2 1 1 S•124 40014242 OH MWD/LWD EDIT 11/OSI06 3 1 S-125P81 4D015467 OH MWDILWD EDIT ' 07/07/07 2 1 V-121 40015007 OH MWDILWD EDIT ~ 03/24/07 2 1 V-222 40075319 OH MWD/LWD EDIT 06108/07 2 7 W-210 40014842 OH MWD/LWD EDIT . '~ 02I26/07 2 1 V-218 40015066 OH MWD/LWD EDIT 04/07/07 2 1 W204 40014637 OH MWDILWD EDIT ~ ~ 07/29/07 2 1 W204PB1 40014637 OH MWDILWD EDIT 01/24/07 2 7 W-204L1 40014637 OH MWDILWD EDIT ' ~ 02l07I07 1 1 W-204L2 40014637 OH MWD/LWD EDIT ~ 02/20I07 1 1 PLEASE ACKNOWIEDGE RECEIPT BY SIGNING AND RETURNING ONE COPY EACH TO: BP Exploration (Alaska)Inc. Petrotechnical Data Center..LR2{J ~~ ~~~~ 900 E Benson Blvd ~1; ,~ ~ ~) AnchorageAK 99508-425~, ~, i9 e.~ 1'..( ..-.. ~_..;., DateDelivered: ^e ~ ,n ~x~{"~"a ~TT~,.A ~..4D...t4 !i 1~{?~" 6 :'i~ ~l '~:t )Zi.~:.,~4, ~ I ,'~ ~` ~ ~'r'n ; 'F'.i . . . . . ... Schlumberger-DCS 2525 Gambell St, Suile 400 Anchorage, AK 99503-2838 ATTN: Beth ~ Received byl~, J(~~/~-~ 10/19/07 i ~ ~ Saltmarsh, Arthur C (DOA) ~ Page 1 of 1 From: Hubble, Terrie L [Terrie.Hubble@bp.com] Sent: Monday, October 22, 2007 1:50 PM To: Saltmarsh, Arthur C (DOA) Subject: PBU S-125 / PTD # 207-083 Hi Ark, Please reference the fof(owing weil: Well Name: PBU S-125 Permit #: 207-083 API #: 50-029-23361-00-00 Top Perf MD: 1037Q' Bottam Perf MD: 11375' This well began Productian on C?ctober 16, 2007 Method of Clperations is: Gas Lift Date of Test: October 15, 2007 Hours Tested: 4 24-Hour Rate / Oil-Bbl: 783 24-Nour Rate 1 Gas-Mc~F: 1,013 24-Hour Rate / Wafier-Bbf: 354 Test Rate I Oil-Bbl: 131 Test Rate / Gas-Mcf: 169 Test Rate I Water-Bbl: 59 Choke Size: 76 Gas-Oil Ration: 1,294 Flow Tubing Pressure: 320 Casing Pressure: 1,420 Oil Gravity-API: 27 10/23/2007 STATE OF ALASKA ~~~ ALASKA~L AND GAS CONSERVATION COM~3SION ~~~EIU~~ ~~~!a 2 7 2007 WELL COMPLETION OR RECOMPLETION REPORT AND LOG ;;>;,:';~a Uii ~ Gas Cons. Cotnmission tinrh~ranP 1a. Well Status: ~ Oil ^ Gas ^ Plugged ^ Abandoned ^ Suspended zoaac zs.~os 2oaac zs.»o ^ GINJ ^ WINJ ^ WDSPL ^ WAG ^ Other No. of Completions One 1b. Well Class: ~ Development ^ Exploratory ^ Service ^ Stratigraphic 2. Operator Name: BP Exploration (Alaska) Inc. 5. Date Comp., Susp., or Aba 7/28/2007 ,Q~ 12. Permit to Drill Number 207-083 ' 3. Address: P.O. Box 196612, Anchorage, Alaska 99519-6612 6. Date Spudded 6/28/2007 ~ 13. API Number 50-029-23361-00-00 ~ 4a. Location of Well (Governmental Section): Surface: ' ' 7. Date T.D. Reached 7/14/2007 ~ 14. Well Name and Number: PBU S-125 ~ 4227 FSL, 4502 FEL, SEC. 35, T12N, R12E, UM Top of Productive Horizon: 2746' FSL, 835' FEL, SEC. 33, T12N, R12E, UM 8. KB (ft above MSL): 63.9' Ground (ft MSL): 35.4' 15. Field / Pool(s): _ Prudhoe Bay Field / Aurora Pool Total Depth: 1545' FSL, 1095' FEL, SEC. 33, T12N, R12E, UM 9. Plug Back Depth (MD+n/D) 11527 6762 4b. Location of Well (State Base Plane Coordinates, NAD 27): Surface: x- 618930 y- 5980430 Zone- ASP4 10. Total Depth (MD+ND) 11623 ~ 6750 16. Property Designation: ADL 028258 TPI: x- 612064 y- 5978844 Zone- ASP4 Total Depth: x- 611824 y- 5977639 Zone- ASP4 11. SSSV Depth (MD+TVD) None 17. Land Use Permit: 18. Directional Survey ~ Yes ^ No Submit electronic and rinted information er 20 AAC 25.050 19. Water depth, if offshore N/A ft MSL 20. Thickness of Permafrost (TVD): 1934' (Approx.) 21. Logs Obtained (List all logs here and submit electronic and printed information per 20 AAC 25.071): MWD DIR / GR, GR / RES / PWD / AZI-DENS / NEU / Sonic, Stethoscope, GR / RES / AZI-DENS / NEU / ABI / PWD 22. CASING, LINER AND CEMENTING RECORD CASING SETTING DEPTH MD SETTING DEPTH ND HOLE AMOUNT WT. PER FL GRADE TOP BOTTOM TOB' BOTfOM SIZE CEMENTING RECQRD ` PULLED 20" 215.5# A-53 Surfac 147' Surface 147' 42" 260 sx Arctic Se A rox. 9-5/8" 40# L-80 28' 4318' 28' 3213' 12-1 /4" 635 sx AS Lite 445 sx Class 'G' 7" 26# L-80 26' 103 ' 26' 6763' 8-3/4" 452 sx LiteCrete 87 sx Class'G' 4-1/2" 12.6# L-80 10213' 11 15' 6683' 6751' 6-1/8" 182 sx Class'G' 23. Open to production or inject ion? ~ Yes ^ No 24. TusiN~ Recaan If Yes, list each i (MD+ND of Top & Bottom; Pe nterval open rforation Size and Number): Size ~EPTH SET MD PACKER SET MD 2-1l2" Gun Diameter, 6 spf 2-7/8" Gun Diameter, 6 spf 4-1/2", 12.6#, 13Cr80 5414' MD TVD MD TVD 3-1/2", 9.3#, 13Cr80 5414' - 10219' 10150' 10390' - 10530' 6778' - 6839' 10370' - 10450' 6769' - 6808' 10580' - 10600' 6850' - 6852' 10970' - 11035' 6805' - 6796' 25. Aeio, FRacruRE, G~weror SQUe~, etc. 10650~ - ~ ~68~' 6851' - 6847' 11085' - 11375~ 679~' - 6768~ ~EPTH ~NTERVAL MD AMOUNT & KIND OF MATERIAL USED 10750' - 10920' 6835' - 6811' 10970' - 11027' 6805' - 6797' 10358' Set Whi stock K/O PB1 11345' - 11515' 6770' - 6763' 3050' Freeze Protect w/ 102 Bbls of Diesel ZF>. PRODUCTION TEST Date First Production: Not on Production Yet Method of Operation (Flowing, Gas Lift, etc.): N/A Date of Test: Hours Tested: PROOUCTior, FoR TEST PERI00 OIL-BBL: GAS-MCF: WATER-BBL: CHOKE SIZE: GAS-OIL RATIO: Flow Tubing Press. Casing Press: Cn~cuuaTeo 24-Ho~R RnTe.• OIL-BBL: GAS-MCF: WATER-BBL: OIL GRAVITY-API ~CORR~: Z7. CORE DATA Conventional Core(s) Acquired? ^ Yes ~ No Sidewal l Core s Ac uired? ^ Yes ~ No If Yes to either question, list formations and intervals cored (MD+ND of top and bottom of each), and summarize lithology and presence of oil, gas or water (submit separate sheets with this form, if needed). Submit detailed descriptions, core chips, photographs and laboratory analytical results 71. (A3~!PLETtON None ~~g~~~ ~~S ~F~ s~P ~ s 2007 ;~~~ Form 10-407 Revised 02/2007 C TINUED ON REVERSE SIDE ~~ `~~ ~~/~~ / ~RlGlNA~ ~-, " 28. GEOLOGIC MARKERS ~LIST ALL FORMATIONS AN ERS ENCOUNTERED~: Z9. FORMATION TESTS NAME TVD Well Teste . ~ Yes ^ No Permafrost Top SurfaCe SurfaCe If yes, list intervals and formations tested, briefly summarizing test resufts. Attach separate sheets to this form, if needed, and submit Permafrost Base 2060' 1934' detailed test information per 20 AAC 25.071. Ugnu 5065' 3599' See Attached - Stethoscope Pressure Data Ugnu M Sands 7109' 4720' Schrader Bluff N Sands 7457' 4911' Schrader Bluff O Sands 7645' 5024' Base Schrader Bluff / Top Colville 8108' 5316' HRZ 10026' 6569' Kalubik 10328' 6747' Kuparuk C 10355' 6761' Kuparuk C/ Base Kalubik 11567' 6757' Formation at Total Depth (Name): Kalubik 11567' 6757' 30. List of Attachments: Summary of Daily Drilling Reports, Well Schematic Diagram, Surveys 31. I hereby certify that the foregping is true and correct to the best of my knowledge. Si ~~ ~ gned Terrie Hubble Title Technical Assistant Date ~ PBU S-125 207-083 Prepared ey Name/Number. Terrie Hubble, 564-4628 Well Number Drilling Engineer: Brandon Peltier, 564-5912 Permit No. / A roval No. INSTRUCTIONS GeNew-~: This form is designed for submitting a complete and correct well completion report and log on all types of lands and leases in Alaska. Submit a well schematic diagram with each 10-407 well completion report and 10-404 well sundry report when the downhole well design is changed. Irena 1a: Classification of Service Wells: Gas Injection, Water Injection, Water-Altemating-Gas Injection, Salt Water Disposal, Water Supply for Injection, Observation, or Other. Mukiple completion is defined as a well producing from more than one pool with production from each pool completely segregated. Each segregated pool is a completion. IreM 4b: TPI (Top of Producing Interval). IreM 8: The Kelly Bushing and Ground Level elevation in feet above mean sea level. Use same as reference for depth measurements given in other spaces on this form and in any attachments. Ire~a 13: The API number ~eported to AOGCC must be 14 digits (ex: 50-029-20123-00-00). IreM 20: Report true vertical thickness of permafrost in Box 20. Provide MD and TVD for the top and base of permafrost in Box 28. IreM 22: Attached supplemental records for this well should show the details of any multiple stage cementing and the location of the cementing tool. IreM 23: If this well is completed for separate production from more than one interval (multiple completion), so state in item 1, and in item 23 show the producing intervals for only the interval reported in item 26. (Submit a separate form for each additional interval to be separately produced, showing the data pertinent to such interval). IreM 26: Method of Operation: Flowing, Gas Lift, Rod Pump, Hydraulic Pump, Submersible, Water Injection, Gas Injection, Shut-In, or Other (explain). IreM 27: Provide a listing of intervals cored and the corresponding formations, and a bnef description in this box. Submit detailed desc~iption and analytical labo~atory information required by 20 AAC 25.071. IreM 29: Provide a listing of intervals tested and the corresponding formation, and a brief summary in this box. Submit detailed test and analytical laboratory information required by 20 AAC 25.071. Form 10-407 Revised 02/2007 Submit Original Only ~ _ ... _. N i ~ I ~ 'N101B-~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~ ~ ~ <Vf~tD~If1~~~UDTmO~Nm~~NI~mMN~Om0D~0~ mm K mm.-mmBm~~m~~mmmm~N~N~.-~m~~N~ MI Nm~ ~f ~ N~~~~~~~~~~~~~~~N~NN~~~ < ~laY I 1 I I I I I 1 I I 1 I 1 1 1 I I 1 I 1 I 1 1 I 1 1 I 1 1 1 1 1 h NNNNNNNyNNNI/11/lNNNNNNNNN~NNNNIA !A (/141N N Q O m 1 N ' . _ . __ ~ o a Z ~~~ ~ ~ wZ cn ¢ x ~ MANIFOLD W MODULE Y Z ,, ~ ~ N 600 S-PAD NOTES: 1. COORDINATES ARE ALASKA STATE PLANE, ZONE-4 NAD 27 & PLANT. 2. GEODETJC COORDINATES ARE NAD-27. 3. WOA S-PAD AVERAGE SCALE FACTOR IS: 0.9999165. 4. HORIZONTAL CONTROL IS BASED ON MONUMENTS S-3 & 5-4. 5. BASIS OF VERTICAL CONTROL IS OPERATOR MONUMENTATION. ELEVAT[ONS ARE BP EXPLORATION MEAN SEA LEVEL DATUM. 6. REFERENCE FIELDBOOK: WOH7-09 PGS. 55-56. 7. DATE OF SURVEY: JUNE 26, 2007. 27 ~ 26 ~ ~25 I ~ _( ~ I ls oAD -N- i ~ 34 ~ 35 36 SQ~~~e-O ~ I tio T.12N. 3 T.11 N. 2 VICINITY MAP N.T.S. OF ,~~ A ~~ ~Poooovoo ~ ~49 ~ ~ 9~ ooooseooeseeoooaosoeooooo0000 ~ =o oLeonard J. ~0'Hanley ~ ~ ~ ~ 11386 ,~~ ~~~ o~~ ~ESS~or~~ SURVEYOR'S CERTIFICATE I HEREBY CERTIFY THAT I AM PROPERLY REGISTERED AND L[CENSED TO PRACTICE IAND SURVEYING [N 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 JUNE 26, 2007. LEGEND -~- AS-BU[LT CONDUCTOR ^ EXISTING CONDUCTOR GRAPHIC SCALE 0 100 200 400 ( IN FEET ) 1 inch = 299 ft. LOCATED WITHIN PROTRACTED SEC_ 35_ T. 12 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 Y=5,980,430.19 N 1010.37 70'21'18.672" 70.3551867' ~ 35 4 4,227' FSL S-125 X= 618,93ID.37 E 424.77 149'02~03.003" 149.0341675' . 4,502' FEL i•. n~uci~ JACOBS cHECKEO:HACKELMAN b p 0 ~ DA~: 6/Z7/B7 ~~' DRAWING: ~ee~ wos e~-ee WOA S-PAD SHEE7: ~ 191~~00 ~o J~B N~ AS-BUILT CONDUCTOR ~~~ 0 27 07 ISSUm FOR INFORMATION ~ K~ SCALE: i°= 2ee' WELL S-125 N0. DAIE REVISION BY piK S-125P61 State Stethoscope pres~e data.xls ~ Test Formation Depth (MD ft.) Depth (TVD ft.) Depth (TVDSS ft.) Formation Pressure (psia) 7 ~ Kuparuk C 10445 6806 6742 3205.7 8 ' Kuparuk C 10420 6794 6730~ 3198.3 9 ~ Kuparuk C 10400 6784 6720 ~ 3197.3 10 ; Kuparuk C 10394 6781 6717 ~ 3196.8 _.._--_ _ - 16 Schrader Bluff OBd 7919 5194 - 5130i 2289 18 Schrader Bluff OBb 7782 5107 5043~ 2263.5 19 Schrader Bluff OBa 7720 50691 5005 2246.2 21 Schrader Bluff OA 7653 5029 4965 2233.8 27 Kuparuk B 10630 6893 6829 3037.7 _-- - ___ BP EXPLORATION Page 1 of 1 Leak-t~ff Test Summary Legal Name: S-125 Common Name: S-125 Test I~ate> Test-Type Test Repth (TMD) Test Depth (ND) AMW Surface Pressure Leak Off Pressure (BHP) EMW ' 7/2/2007 LOT 4,317.9 (ft) 3,213.0 (ft) 8.90 (ppg) 1,179 (psi) 2,664 (psi) 15.96 (ppg) 7/10/2007 FIT 10,364.0 (ft) 6,766.0 (ft) 9.50 (ppg) 530 (psi) 3,869 (psi) 11,01 (ppg) ~ ~J Printed: 8/14/2007 426:13 ~ ~ BP' EXf~LC7RATl~7~1' Page 1 of 28' Ope~a~tians ~ummary R~pvrt Legal Well Name: S-125 Common Well Name: S-i25 Spud Date: 6/28/2007 Event Name: DRILL+COMPLETE Start: 6/23/2007 End: 7/28/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 7/28/2007 Rig Name: NABORS 9ES Rig Number: 9ES ~ ' Date ' From - To Hours ~ Task Cade NPT Phase ' Qescription af Qperations 6/23/2007 12:00 - 00:00 12.00 ~~ MOB N WAIT PRE Release rig from S-401and accepted to standby for S-125 ' conductor to be set @ 1200 - 6/23/2007. ', ' Clean inside and outside of lower derrick wind walis. I ' ( Service low clutch on draw works. I ' C/O gear oil on #2 mud pump. ~ I i Perform general maintenance on SCR's 6/24/2007 00:00 - 12:00 12.00I MOB ' N WAIT PRE Standby in position on S-401 waiting on conductor setting on I I S-125. ~ '~~ Continue general housekeeping & rig maintenance. Clean out boiler #1. 12:00 - 00:00 12.00 l MOB N WAIT PRE Standby in position on S-401 waiting on conductor setting on i ~~ S-125. i Continue general housekeeping & rig maintenance. i I Scrubbing derrick inside windwalls and outside. I Continue to clean out boiler #1. 6/25/2007 00:00 - 12:00 12.00: MOB , N WAIT PRE Standby in position on S-401 waiting on conductor setting on ~I S-125. Continue general housekeeping & rig maintenance. Scrubbing derrick inside windwafls and outside. I Continue to clean out boiler #1. I, Paint pits @ pump room. I Hold Pre-Spud meeting w/ Axeness Crew for S-125 12:00 - 00:00 12.00 i MOB I N WAIT PRE Standby in position on S-401 waiting on conductor setting on ', I S-125. i ~ Continue general housekeeping & rig maintenance. I I~ Change out topdrive blower motor. I Prep and paint rig & mud pits. II i Paint pits @ pump room. ! 0900 - 1800 Conductor crew arrived on location after morning i safety meeting and drov 80' of cond~ ~r.rr,r and weided on 3rd ~ joint before rigging back for the day. 6/26/2007 00:00 - 12:00 12.00 MOB ~ N WAIT PRE Standby in position on S-401 waiting on conductor setting on S-125. Continue general housekeeping & rig maintenance. Finish & Clean up from Boiler #1 maintenance. Paint doghouse, pits, and interconnect. 12:00 - 00:00 12.00 MOB ~ N WAIT PRE Standby in position on S-401 waiting on conductor setting on ' S-125. ~~ ~ Continue general housekeeping & rig maintenance. I II Clean Rig Floor and paint w/ primer. I 0800 - 1400 - Conductor crew drove 3rd stick of 20" pipe. Driving pipe slowed to 75 hits per foot and 4th joint not needed. ~ RD. ~ ~ 1400 - 1630 - GBR installed landing ring and cellar plate. i 1930 - 2000 - Poured 4.5 yards concrete into annulus outside ~ conductor. No cement level seen from surface. Round trip ~ Veco cement truck. I 2145 - 2230 - Add 8 vards concrete to fill annulus and bring i I~ ceilar floor to 3' 6" below ground level. 6/27/2007 00:00 - 12:00 12.00 MOB ; N WAIT PRE Standby in position on S-401 waiting on conductor setting on ; I S-125. Printed: 8/14/2007 426:18 PM ` ~ ~ BP EXPLORATIC}N' Page 2 of 28' Operations Summary Repart Legal Well Name: S-125 Common Well Name: S-125 Spud Date: 6/28/2007 Event Name: DRILL+COMPLETE Start: 6/23/2007 End: 7/28/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 7/28/2007 Rig Name: NABORS 9ES Rig Number: 9ES ~ Date Fram - To Hours Task Code NPT Phase description of Operations 6/27/2007 00:00 - 12:00 12.00 MOB ~ '~ N WAIT I PRE Continue general housekeeping & rig maintenance. Paint do house its and int on t i ~ g , p , erc nec . Place rig matting and herculite around conductor while landing li d d ' I ~ ! ng an ring wel coo cement setting up. 0800 - 0900 - Safety standown w/ Axeness rig crew. 12:00 - 14:00 2.OQ M08 P PRE I Release rig from standby to rig move @ i2:00 noon. Raise rig off S-401, remove mats from beneath. Pull rig oft well, and position onto S-125. Lay matting under rig. 14:00 - 15:00 1.00 MOB P ( PRE Position pit module to sub. Set matting boards under pits, connect pits to sub. 15:00 - 17:00 2.00 MOB P I PRE Rig up and build berm around cellar. MU muid lines @ interconnect. Take on fluid for building spud mud. ~ 'accept rig to S-125 at 1700 hrs 27-June-2007 17:00 - 19:00 2.00 RIGU ~ P PRE Bring tools to floor in preparation for cleaning out conductor. ~ Finish NU diverter. 19:00 - 20:00 1.00 RIGU i P PRE Safety standown w/ Holcombe Rig Crew. 20:00 - 21:00 1.00 RIGU ; P PRE MU cleanout iron: 16" milltooth bit, 12.25" near-bit stabalizer, ~ 4" HWDP. ~ RIH and tag conductor fill @ 69' md-rkb = 40' below ground ~ level. 21:00 - 21:30 0.50 RIGU P PRE Test diverter system. AOGCC re. John Crisp waived witness ~ of diverter test. Test witnessed by NAD toolpusher Roy Hunt and BP WSL Matt Martyn. 21:30 - 22:00 0.50 RIGU P PRE Pre-spud meeting w/ all rig personel on evening rotation and BP Drilling Manager Paul Foreman. 22:00 - 23:30 1.50 ~ RIGU P I PRE Fill lines and surface equipment w/ spud mud & test to 3500 psi i - OK. Clean out fill in conductor w, 16" bit from 69' to 140' md. ~ Conductor bottom at 147' md. 450 gpm, 260 psi, 45 rpm, 350 ft-ibs TQ. 23:30 - 00:00 0.50 RIGU P PRE Secure from conductor clean out, RU to begin MU HWDP stands. 6/28/2007 00:00 - 06:30 6.50 RIGU P PRE PU 8 stands of HWDP and 37 stands of 4" HT-40 DP and rack I back in derrick. 06:30 - 07:00 0.50 RIGU P ~ PRE PU Jar stand and stand back in derrick. 07:00 - 09:00 2.00 RIGU P PRE Prepare rig floor to pick up BHA. PJSM. Make up BHA #1 with 12.25" new HTC MXL-01X bit, 1.50 deg PDM, LC, NM STAB, MWD, NM STAB, NM XO, UBHO, NM DC, NM STAB, and 2 ea NM DCs. 09:00 - 10:00 1.00 RIGU P PRE PJSM with Gyro Data and Sperry E-line. Hang sheave in j derrick and rig up gyro tools. 10:00 - 12:30 2.50 DRILL ~ P SURF Spud S-125 12.25" surface hole and drill from 147' to 451'.- i Gyro survey hole every 100'. 530 gpm, 850 psi on, 830 psi off, 65 rpm, 4.Ok TQ on, 4.Ok TQ off, PU - 55k, SO - 52k, RWT - 51 k, WOB - 11 k. AST - 0.30 hrs, ART - 0.41 hrs. W ipe 30' prior to connections. Returns over shakers from 200-300' had gravel 4 to 8 inches deep over shakers 1& 2 and 2-4 inches deep over 3& 4. After -350' md returns c eane up to norma su ace returns. Adding Screen Kleen to deal with clays prior to 900'. Circulate hole 1000' strokes. 12:30 - 14:00 1.50 DRILL P SURF POOH from 451' md to pick up JAR stand. Overpull at 442' Printed: 8/14/2007 4:26:18 PM ~ ~ BP' EXPLORATION ` Page 3 of 28' E~peratians Summary Report Legal Well Name: S-125 Common Well Name: S-125 Spud Date: 6/28/2007 Event Name: DRILL+COMPLETE Start: 6/23/2007 End: 7/28/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 7/28/2007 Rig Name: NABORS 9ES Rig Number: 9ES ~ ~ate From - Ta Hours Task Code NPT Phase ~ Descripti4n of C?perafions 6/28/2007 12:30 - 14:00 1.50 DRILL P SURF ', md, and pump out to 174'. PU Jar stand and RIH dry to 420' I md. Hole took weight. Wash from 420' to 443' (Tag fill). Clean ' out from 443' - 451' md - OK. 14:00 - 18:30 4.50 DRILL P SURF Directionaliy drill 12.25" surface hole from 451' to 1,005'. ~ '; Gyro surveyed hole every 100' to 900' (1000' bit depth). I 650 gpm, 1,936 psi on, 1,896 psi off ' 65 rpm, 3.6k TQ on, 1.2k TQ off ~ ~ PU - 66k, SO - 60k, RWT - 63k, WOB - 25k. W ipe 30' prior to connections. No hydrates seen as of yet. 18:30 - 00:00 5.50 DRILL P SURF I Directionally drill 12.25" surface hole from 1,005' to 1,769'. ~ 610 gpm, 2,150 psi on, 2,010 psi off i, 80 rpm, 4.Ok TQ on, 2.Ok TQ off PU - 80k, SO - 70k, RWT - 80k, WOB - 35k. ~ AST - 5.85 hrs, ART - 1.3 hrs. ' Survey every stand. ' W ipe 30' prior to connections. No hydrates seen as of yet. ' I '`RD Gyrodata and Sperry E-Line out of critical path. 6/29l2007 00:00 - 01:00 1.00 DRILL P i , SURF ' Circulate 3 bottoms up. 610 gpm, 2050 psi, 80 rpm, 22k TQ, i PU - 82k, SO - 77k, RWT - 79k, MW - 9.0 ppg. ' I Shakers cleaned up @ 1.5 BU and cuttings picked back up at ~ !, 2.7BU. ~, Shut down @ 3 BU to avoid washing out hole. 01:00 - 02:15 1.25 DRILL P SURF ', Monitor well - OK. POH for wiper trip from 1,769' to 269'. i I Pulled 25k over while pulling dry at 1,445'. On that stand, I , pumped through (320 gpm, 650 psi) and only saw 3-5k ( ~I indication of tight spot. 02:15 - 03:15 1.00 DRILL P SURF ' Run in hole from 269' to 1,672' smooth - only taking 5k weight ~ I intermittantly. Wash last stand to TD @ 1,769' md. 03:15 - 12:00 8.75 DRILL P SURF ~ Directionaily drill 12.25" surface hole from 1,769' to 3,298' md = I, 2,669 TVD. ~~ Surveyed hole every stand. i, 650 gpm, 3,269 psi on, 3,100 psi off, I 80 rpm 5.Ok TQ on, 3.Ok TQ off i PU - 107k, SO - 67k, RWT - 82k, WOB - 35k. I AST - 3.05 hrs, ART - 2.26 hrs W ipe 30' prior to connections. No hydrates seen as of yet. , Permafrost came in at - 2,060' m. 12:00 - 17:00 5.00 DRILL P SURF I Directionally drill 1225" surface hole from 1,769' to TD @ 4,328' md = 3,218' TVD. I Sporadically encountered stringers while drilling and packoffs while backreaming. 565 gpm, 3,310 psi on, 3,030 psi off, 80 rpm 9.Ok TQ on, 4.Ok TQ off I PU - 120k, SO - 70k, RWT - 85k, WOB - 50k. ~~ AST - 0.57 hrs, ART - 3.14 hrs ~ I Surveyed hole every stand. ' ~~ W ipe 30' prior to connections. No hydrates seen. 17:00 - 19:00 2.00 DRILL P SURF ' Circulate 3 bottoms up while reciprocating pipe 60'. 610 gpm, i 3,200 psi, 100 rpm, 5.Ok TQ, RTW - 85k, MW - 9.5 ppg, 300 ~ viscosity. Consistant returns over shakers. 19:00 - 21:30 2.50 DRILL P SURF ~ Monitor well - OK. POH for wiper trip from 4,328' to 1,670' with ' intermittent 10-30k drag. Wipe tight areas. PU - 120k, SO - ~ 75k. Printed: 8/14/2007 426:18 PM ~ ~ ' BP' EXPL~RATION Page 4 of 28' C~peration~ Surrtmary R~port Legal Well Name: S-125 Common Well Name: S-125 Spud Date: 6/28/2007 Event Name: DRILL+COMPLETE Start: 6/23/2007 End: 7/28/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 7/28/2007 Rig Name: NABORS 9ES Rig Number: 9ES Date From - To Haurs Task Code NPT Phase 'j Description o# Op~rations 6/29/2007 ~i 19:00 - 21:30 2.50 DRILL P SURF ' Hole started swabbing and pulling tight. Backream 1 stand out I ~ ~ of hole from 1,865' to 1,769'. 550 gpm, 1000 rpm. POH dry ' j from 1,769' to 1,670 with intermittent 5-15k drag. 21:30 - 23:15 1.75 DRILL P SURF j Run back in hole from 1,670' to 4,255' without pumping. Had ~~ frequent down drag but able to work past. Fill pipe and precautionary wash down last stand to bottom at 4,328'. 23:15 - 00:00 0.75 DRILL P SURF I~ Circulate 1.5 bottoms up reciprocating 70' to keep bit in SV2 I shale while circulating. Shakers cleaned up to 25% of original cuttings load. 580 gpm, 3,150 psi, 100 rpm, 5.5k TQ, PU - 120k, SO - 75k, RTW - 90k, MW - 9.5 ppg. 613012007 00:00 - 00:30 0.50 DRILL P SURF Continue to circulate 1.5 bottoms up reciprocating 70' to keep bit in SV2 shale while circulating. Shakers cleaned up to 25% of original cuttings load. 580 gpm, 3,150 psi, 100 rpm, 5.5k TQ, PU - 120k, SO - 75k, RTW - 90k, MW - 9.5 ppg. 00:30 - 01:45 1.25 DRILL P SURF ', Monitor well - OK. PU - 120k, SO - 75k. POH to run surface ! 328' to 1,960' with intermittant 5-15k drag. casing from 4 01:45 - 02:15 0.50 DRILL P SURF ~ , At 1,960', well started swabbing w/ overpull of 25k. Backream I ; 1 stand from 1,960' to 1,865'. RTW - 78k, 560 gpm, 2100 psi, ~ ~ 90 RPM, TQ - 4.5k. Shut down pumps and wipe down and up i ~ dry before continue POOH. ~ 02:15 - 03:00 0.75 DRILL P SURF POOH dry 2 more stands. At 1,673', well took overpull of 25-30k, but no swabbing. Attempt to work dry, but no improvement. Backream 1 stand from 1,673' to 1,577'. Shut ~ down pumps and wipe down and up dry before continue I POOH. Next stand puiled tight in the same way 70' above original depth. (70' from bit to NM STAB). Backream 2nd stand from 1,577' to 1,482'. Shut down pumps and wipe down and up dry before continue POOH. 03:00 - 04:00 1.00 DRILL P SURF POH to run surface casing from 1,482' to 1,005' with intermittant 5-10k drag. Stand back HWDP, Jar and DC stands from 1,001' to 200'. 04:00 - 05:30 1.50 DRILL P SURF PJSM. Laydown BHA #1: MWD, motor and bit. Bit Grade 4-3-W T-M-E-1-NO-TD. 05:30 - 06:30 1.00 DRILL P SURF Clear and ciean rig floor. 06:30 - 08:00 1.50 CASE P SURF Rig up to run surface casing. Make dummy run with hanger and Ianding joint. 08:00 - 15:00 7.00 CASE P SURF PJSM. Pick up and Baker-Lok 9 5/8" shoe track. Check fioats - OK. Run in hole with 105 joints 9 5/8" 40# L-80 BTC surface casing & TAM Port collar. Make up torque to mark - 9,000 ~ ft/Ibs avg. using Best-O-Life 2000 NM. Ran 25 bowspring centralizers on first 25 joints with 1 ea locked down 10 ft above Float Shoe and Float Collar. Fiii every joint with casing fill-up i tool. Had intermittent 10-35 draq. No mud lost on trip in hole. i i 15:00 - 15:30 0.50 CASE P SURF PU 9-5/8" Spiit landing joint & land hanger. ~ i PU - 215k, SO - 70k. I, Tam Port Collar @ 1,011' ( w/ Bowspring centralizers 15' j above and below.) i ~ Float Shoe @ 4,318' Float Collar @ 4,234' i 15:30 - 16:00 0.50 CASE P SURF Rig down Franks tool and rig up cement head and hose. ~ i 16:00 - 19:00 3.00 CEMT P I SURF Stage pumps up to 8 bpm, 540 psi and circulate and condition Printed: S/14/2007 4:26:18 PM ~ ~ ' SF' EXPLURATION '' Page ~ a# ~8' (?per~~ions Summary Report Legal Well Name: S-125 Common Well Name: S-125 Spud Date: 6/28/2007 Event Name: DRILL+COMPLETE Start: 6/23/2007 End: 7/28/2007 Contractor Name: NABORS ALASKA DFiILLING I Rig Release: 7/28/2007 Rig Name: NABORS 9ES Rig Number: 9ES ' Date From - To Hours Task Code NPT Phase Description o# Operati~ns 6/30/2007 16:00 - 19:00 3.00 CEMT P SURF mud back from 300 vis 65 YP to 62 vis, 15 YP. Working pipe in oniy 7 ft strokes to avoid catching casing collar on conductor I i edge. PU - 190k, SO - 100k. Hold PJSM w/ Schlumberger ' I and rig personel on location. ~ 19:00 - 22:45 ! 3J5 CEMT P SURF Shut down pumps and switch to Dowell. ~ i Pump 5 bbis water and test lines to 3,500 psi - OK. ' i ~ Pump 72 bbls of 10.7 ppg MudPush II spacer C~2 5 bpm avg, !I i 168 psi ICP, 123 psi, FCP. Drop bottom plug. Pump 503 bbls of 10.7 ppg ArcticSet LiteCrete cement @ 6 bpm avg, 123 psi ICP, 510 psi FCP. Note: Saw bottom piug shear w/ 348 bbls lead away (26 bbis late). Landed casing on ring one reciprocation after switching over from Lead to Tai slurry as reci rocation was ettin stick after 1 BBL tail pumped. Pump 94 bbis of 15.8 ppg Class "G" cement @ 4 bpm avg, 430 psi I ~ ICP, 220 psi FCP. Drop top plug and kick out same with 10 j bbls of water. Switch to rig pump and displace cement with I i 310 bbis of 9.5 ppg spud mud @ 6 bpm, 452 psi ICP, 828 I ~ ~ FCP. Slowed pump to 2 bpm, 780 psi 5 bbls prior to bumping ~ plug. Bump plug on schedule @ 96% efficiency 4,420 stks with 1,300 psi. CIP @ 22:29 hr. Bleed off pressure and check floats - OK. Reciprocated casing 7' until pumping tail slurry. ~ Had full returns durinq ail of circulatino cementina and displacement. Returned -104 bbls of sidewalk cement back to surface. PU - 185k, SO - 65k prior to landing casing. 22:45 - 23:15 I 0.50 CEMT P SURF Pressure test 9-5/8" casinq to 3.500 osi for 30 minutes ! ~ immediately after piug bump & float check - Good test. 23:15 - 00;00 I 0.75 CEMT P SURF Rig down cement head, flush riser, and laydown landing joint. 7/1/2007 00:00 - 01:30 i 1.50 DIVRTR P SURF Nipple down surface diverter. Clean out cellar box. Remove 4" I valves from conductor. Nipple down dresser sleeve and riser, I ~ remove same from cellar. " " 01:30 - 03:00 1.50 DIVRTR P SURF Change out drilling nipple from 20 to 16 . Clean out rotary drain pan. Remove surface hydril from well and secure in cellar. Bring tubing spool in from outside cellar. 03:00 - 05:30 2.50 W HSUR P SURF Instail casing head. Spot tubing spool and adapter on wellhead. Confirm starter head orientation w/ S-Pad Operator. Set BOPE on adapter for weight. Test metal to metal seal to I 1,000 psi - 10 minutes - OK. Torque tubing head to casing ! head bolts. 05:30 - 07:30 ~ 2.00 BOPSU P SURF Nipple up BOPE. 07:30 - 08:30 1.00 BOPSU P SURF Change out lower pipe rams from 7" left in BOPE for S-400A job to 2-7/8" x 5" VBR Rams. 08:30 - 13:00 4.50 BOPSU P SURF Rig up and pressure test BOPE to 250 low psi for 5 minutes each, 3,500 hi h si for 5 mi t h. Test annular preventer to 250 low psi for 5 minutes, 3,500 high psi for 5 minutes. Perform accumulator drill (D4). Test witness waived by AOGCC rep John Crisp. Test witnessed by BP WSL Brian Buzby, NAD TP Bill Bixby. 13:00 - 14:00 1.00 BOPSU P SURF Rig down test equipment, install wear bushing, laydown test joint and blowdown lines. 14:00 - 19:00 5.00 i DRILL P INTi RU floor to pick up 4" drill pipe singles. PU 120 joints 4" DP and RIH. POH standing back 40 stands drill pipe in derrick. 19:00 - 21:30 2.50 DRILL P INT1 RU floor to pick up 4" drill pipe singles. PU 60 joints 4" DP and RIH. POH standing back 20 stands driil pipe in derrick. Printed: 8/1~4/2007 4:26:18 PM • ~ BP' EXPL~7RAT1C?N'' ~age 6 of 28' Ope,rations Summary Repor# Legal Well Name: S-125 Common Well Name: S-125 Spud Date: 6/28/2007 Event Name: DRILL+COMPLETE Start: 6/23/2007 End: 7/28/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 7/28/2007 Rig Name: NABORS 9ES Rig Number: 9ES Qate Frorn - To Hours Task Code NPT Phase Description of Operations -~- -- --- _ 7/1/2007 21:30 - 00:00 2.50I DRILL P i INT1 PJSM. Begin to pick up and make up BHA #2 to 145' : New 8 3/4 Hycalog DTX619M, 1.50 deg PDM, LW D/Ecoscope, ', MWD/Telescope, LWD/Stethoscope, NM STAB, LWD/iSonic. 7/2/2007 00:00 - 01:30 1.50' DRILL P INT1 Finish pick up and make up BHA #2 from 145' to 1042' : New I ~ 8 3/4 Hycalog DTX619M, 1.50 deg PDM, LW D/Ecoscope, ~ i MWD/Telescope, LWD/Stethoscope, NM STAB, LWD/iSonic I already made up. ( ~ Surface function test MWD/LWD tools - OK. Continue making ~I ~ up BHA #2. NM STAB, 2 ea NM DC, Saver Sub, 1 ea 5" ~~ i HWDP, JAR (Jar oil seen on previous jars. LD old Jar & PU new), 1ea 5" HWDP, XO, 24 ea 4" HWDP. 01:30 - 02:30 1.00 I DRILL P I INT1 Single in BHA to 2,196' and install Ghost Reamer. 02:30 - 03:30 ~ 1.00 j DRILL P INT1 Single in BHA to 2,769'. RIH on stands from derrick to 4,108'. ! P U- 141 k, SO - 61 k. 03:30 - 05:00 1.50I DRILL P INT1 Cut & slip drilling line. Service topdrive, blocks, crown. Make I up blower hose. 05:00 - 06:00 1.00 DRILL P INT1 Wash down and tag cement stringers above float collar at , 4,227'. Begin drilling cement to 4,303'. Tag float collar @ ~ 4,233' md. 550 gpm, 2360 psi off, 2707 psi on, 60 rpm, 7k , ( WOB, 6-7k TQ, RWT - 92k. 06:00 - 07:00 1.00 ~I DRILL P i INTi Finish drilling shoe track and rat hole to 4,328', driil 20' new I hole to 4,348'. 550 gpm, 2370 psi off, 2720 psi on, 60 rpm, ~ 6.5k TQ, 7K WOB, rwt - 92K Begin displacing spud mud with new 8.8 ppg LSND at 4,310'. 07:00 - 07:30 ~ 0.501 DRILL P , INT1 Finish displacing well to 8.8 ppg LSND. Pull up to shoe. I , Conduct LOT. MD = 4,318', TVD = 3213', 1179 psi surface i I pressure, 8.9 ppg LSND. ( EMW = 15.96 07:30 - 08:00 0.50 DRILL P INT1 Obtain benchmark ECD's: 0 rpm, 9.53 ppg / 80 rpm, 9.60 ppg I PU 2nd ghost reamer. 08:00 - 12:00 4.00 I DRILL P INT1 Drill from 4,348' to 5,454'. PU - 133k, SO - 74k, RWT - 98k, 585 gpm, 2210 psi on, 1890 psi off, 80 rpm, 10-25k wob, 7k tq on, 5k tq off ' Backream each stand 60' and 75% drilling rate down. I I Surveys every 90'. Calc ECD's 9.93 ppg, Actual ECD's 10.68 ppg. ~ I AST=J5 hrs, ART=1.66hrs. 12:00 - 00:00 I 12.001 DRILL I P Pump 50 bbl hi-vis sweep @ 4783' md and saw 50% increase in cuttings. INT1 Drill from 5,454' - 7,749'. PU - 145k, SO - 85k, RWT - 115k, 585 gpm, 3340 psi on, 2810 psi off, 80 rpm, 10-25k wob, 10k tq on, 8k tq off Backream each stand 60' and 75% drilling rate down. Surveys every 90'. Calc ECD's 10.02 ppg, Actual ECD's 10.66 ppg. AST=0.7 hrs, ART=5.78hrs. MAD Pass each slide down at - 400 fph. i` ~ ~.b o~ e~ " N ~.cn~~ 21:10 - Encountered predicted fault at 7,302' md. Lost 5 bbls immediately and went to a loss rate of 50-60 bph dynamic and less than 10 bph static. Pump Mix-II medium slug and continue to string in Mix-II. Losses consistantly slowed and Printed: 8/14/2007 426:18 PM • ~ BP" EXPLORATIDN Page 7 of 28' Operations Summary Repc~rt Legal Well Name: S-125 Common Well Name: S-125 Spud Date: 6/28/2007 Event Name: DRILL+COMPLETE Start: 6/23/2007 End: 7/28/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 7/28/2007 Rig Name: NABORS 9ES Rig Number: 9ES Date Fr~m ~ To Hours Task Code NPT Phase Qes,cription of Operations . . _ __ _ 7/2/2007 12:00 - 00:00 ~ 12.00 DRILL i P ~ INT1 were back to static by 23:59. Total 90 bbls LSND lost to ' I formation. 7/3/2007 00:00 - 12:00 12.00 DRILL ~ P I INT1 Directionally Drill from 7,749' to 9,183'. I ~i PU - 156k, SO - 92k, RWT - 121 k, WOB - 10-25k, 585 gpm, ; 3,645 psi off, 4,165 psi off, 80 rpm, 9.2k TQ off, 11.4k TQ on. Backream each stand 60' and 75% drilling rate down. ~ ~ Surveys every 90'. ' Caic ECD's - 11.0 ppg, Actual ECD's - 11.45 ppg, MW - 9.4 I Pp9~ AST - 2.95 hrs, ART - 3.76 hrs. ! j MAD Pass each slide at - 400 fph. ~ Pumped Hi-Vis sweep @ 8,151' with no increase in cuttings ~ when back to surface. i Pumped weighted Hi-Vis sweep @ 8,705' with no increase in i cuttings when back to surface. i 'Lost 72 bbls from midnight to noon. ~ 12:00 - 17:00 5.00 DRILL P ~ INT1 Directionally Drill from 9,183' to 9,812'. ~ PU - 160k, SO - 110k, RWT - 135k, WOB - 10-25k, 585 gpm, ~ ~ 3,645 psi off, 4,165 psi off, 80 rpm, 6k TQ off, 9k TQ on. ~ Backream each stand 60' and 75% drilling rate down. ~ i Surveys every 90'. ~ Calc ECD's - 10.72 ppg, Actual ECD's - 11.45 ppg, MW - 9.4 ~ ~ PP9• Start mud weight up @ 9,680' with 14.7 ppg Spike Fluid over 2 circulations. ~ AST - 2.80 hrs, ART - 1.45 hrs. With 10.5 ppg weighted mud at surface, started losing ~ circulation. 17:00 - 19:30 2.50 DRILL N DPRB INT1 Monitor well, filling annulus from trip tank while mixing 120 bbl, 40 ppb LCM pill. Static loss rate at 140-180 bph. Reciprocate pipe OK without excess drag. LCM pill consisted of Mix 11 Med, Mix II Coarse, Nut Plug Fine, Nut Plug Coarse. , Had to take on 9.4 ppg mud for filling hole while mixing LCM , piil. ' 19:30 - 22:15 2.75 DRILL N DPRB INT1 Pump LCM pill @ 3 bpm, 710 psi without returns while 22:15 - 00:00 I 1.751 DRILL I N i DPRB I WTi ',7/4/2007 00:00 - 02:00 2.00 DRILL ~ N DPRB ~ INT1 ' 02:00 - 04:30 2.50 DRILL I N DPRB ~ INT1 pumping down drillpipe. Sfarted getting partial returns with lead of pill at appx. 8,000' in annulus. Slow pump rate to 2 bpm. Loss rate decreased from 180 bph to 85 bph. Continue pumping until tail of pill was at 7,300' with loss rate improving to 0 bph dvnamic. Shut down pump and monitor well for 10 min. Well static. Attempted to increase rate to 4 bpm for 10 min with loss rate at 132 bph. Drop rate and continue pumping out LCM piil @ 3 bpm, 710-540 psi without losses. Mud weight not consistant. 9.7 Pp9 - 10.3 Pp9~ Lost 700 bbls from noon to midnight. Lost 772 bbls for the day. 862 bbls total for intermediate section. Continue circulating out LCM pill @ 3 bpm, 510 psi. Stage pump up to 5 bpm, 900 psi without losses. Continue circulate and condition mud, gradually increasing mud weight to 10.3+ ppg and adding black mud products. Printed: 8/14/2007 4:26:18 PM ~ ~ BP' EXPLORATION' Page 8 of 28 (~perations Summ:ary RepQrt Legal Well Name: S-125 Common Well Name: S-125 Spud Date: 6/28/2007 Event Name: DRILL+COMPLETE Start: 6/23/2007 End: 7/28/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 7/28/2007 Rig Name: NABORS 9ES Rig Number: 9ES , ~ Date ' From - To Wours Task Cade NPT Phase '~ D~scriptic~n of Operations ~ 7/4/2007 ~ 04:30 - 06:30 2.00 DRILL N -- DPRB INT1 ; Stage pumps up to 526 gpm, 3,430 psi, 70 rpm, 6.8k TQ. No I mud losses. Continue circulate and condition mud for target of ! ' 10.5 pP9~ 06:30 - 12:00 5.50 DRILL P INT1 I Directionally Drill from 9,812' to 10,203'. !) PU - 167k, SO - 115k, RWT - 133k, WOB - 10-25k, 530 gpm, i 3,480 psi off, 3,870 psi on, 80 rpm, 6.8k TQ off, 8.9k TQ on. ~ Backream each stand 60' and 75% drilling rate down. i Surveys every 90'. ! Calc ECD's - 11.31 ppg, Actual ECD's - 11.91 ppg, MW - 10.5 ~ PP9~ i AST - 2.03 hrs, ART - 1.84 hrs ~ No mud losses from midnight to noon. 12:00 - 17:00 5.00 DRILL P INTi '• Directionaliy Drill from 10,203' to TD @ 10,740' MD, 6,945' j TVD. ~ PU - 170k, SO - 110k, RWT - 140k, WOB - 10-25k, 525 gpm, ~ 3,615 psi off, 3,980 psi on, 80 rpm, 7k TQ off, 10k TQ on. ~ Backream each stand 60' and 75% drilling rate down. ! Surveys every 90'. ~ Calc ECD's - 11.44 ppg, Actual ECD's - 11.78 ppg, MW - 10.5 ! PP9• i_ ~~~~ ` ~\~W ~~ i AST - 0.98 hrs, ART - 2.20 hrs. J i Started loss rate of 30 bph, starting at 10,260'. Slow pump rate i to 510 gpm. j Increased to 108 bph @ 10,430'. Slow pump rate to 470 gpm. ( Increased to 192 bph @ 10,520'. Slow pump rate to 450 gpm. i Increased to 240 bph Q TD. 17:00 - 21:30 4.50 DRILL N DPRB INT1 Monitor well - Static. Orient high side, circulate and reciprocate j while mixing 50 bbl, 40 ppb LCM pill. Pump LCM pill surface to I surface at 3.5 bpm, 590 psi. 20 bph avg loss rate surface to ~surface. ~ 21:30 - 00:00 2.50 DRILL P INT1 Stage pumps up to 460 gpm, 2,740 psi. Had initial loss rate of 120 bph. Decreased to 75-85 bph by bottoms up after rate was obtained. I Lost 520 bbls from noon to midnight and total for the day. ~ 1 38 total bbls lost for intermediate section. 7/5/2007 00:00 - 05:30 5.50 DRILL P INTi MadPass log from 10,740' to 10,300' Q 100 fph per Geologist. 435 gpm, 2,530 psi, 65 rpm, 8.6k TQ. Calc ECD - 11.34 ppg, Act ECD - 11.44 ppg, MW - 10.5 ppg. Loss rate @ 66-78 bph. I 05:30 - 11:30 6.00 DRILL P INT1 MadPass log from 10,300' to 8,801' @ 600 fph. ~ 411 gpm, 2,155 psi, 65 rpm, 7.6k TQ. ~ Mud losses increased to 200+ bqh once ahost reamer was above fault @ 7,300. 11:30 - 12:00 0.50 DRILL P INT1 Monitor well. 45 bbl breathed back then static. ('Lost 587 bbls of mud from midnight to noon. 12:00 - 13:00 1.00 DRILL P INT1 Continue MadPass logging from 8,801' to 8,609'. j 411 gpm, 2,125 psi, 65 rpm, 7.6k TQ. ~ Calc ECD - 11.32 ppg, Act ECD - 11.62 ppg. 13:00 - 15:00 2.00 DRILL P INTi i Run in hole without problem to 10,712'. Wash to bottom at 10,740'. PU - 195k, SO - 110k. 15:00 - 20:45 5.75 DRILL P INT1 Pump 130 bbl, 45 ppb LCM pill surface to surface @ 3 bpm, 650 psi. Slow rate with 205 bbls away to 1.5 bpm, 655 psi. Printed: 8/14/2007 426:18 PM . . • BP' E7~F~LORATION ' Page 9 csf 28 :~?~~ra~tio~ns ~~rmmary Report Legal Well Name: S-125 Common Well Name: S-125 Spud Date: 6/28/2007 Event Name: DRILL+COMPLETE Start: 6/23/2007 End: 7/28/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 7f28/2007 Rig Name: NABORS 9ES Rig Number: 9ES Date . From - To Hours Task Cade NPT Phase Description of C~perations 7/5/2007 ',15:00 - 20:45 5.75 DRILL P INT1 Stage up pumps to 380 gpm, 1,360 psi with a 72 bph loss rate. I Slow rate to 3 bpm, 465 psi when pill reached surface to ~~ reduce surface mud loss. ~! 20:45 - 21:45 1.00 DRILL P INT1 Shaker screens blinded off by black mud products and LCM. I Circulate @ 3 bpm while screening down to 165 mesh screens ' I on all shakers. I, 21:45 - 23:00 1.25 DRILL P INT1 Stage pumps up to 495 gpm, 1,990 psi. Pressure too low for pump rate. Circulate @ 3 bpm while going through pumps 1 ' I pump at a time to trouble shoot pressure problem. Cleaned discharge and suction screens on both pumps. Bring pumps back on line and stage up to 540 gpm, 2,955 psi, 70 rpm, 10k ~ TQ, 60 bph loss rate. ~ 23:00 - 00:00 1.00 EVAL P INT1 Begin calibrating pumps with MWD for Stethoscope MDT I pressure sampling. 'Lost 650 bbls of mud from noon to midnight. , 'Lost 1,237 bbls total for the day. ' 2,619 bbis total for intermediate section. 7/6/2007 00:00 - 05:30 5.50 EVAL P INT1 MDT pressure sampling with Stethoscope tool. 512 gpm, 2,670 psi. ~ MDT Sampling Stations: ~ 10,630' - 1 attempt - no seal. 10,629' - 1 attempt - no seai. 10,537' - 1 attempt - good test - Dry / Tight. , 10,504' - 1 attempt - good test - Good FP ~ 10,474' - 1 attempt - good test - Good FP 10,446' - 1 attempt - no seal. 10,445' - 1 attempt - good test - Good FP ~ 10,420' - 1 attempt - good test - Good FP 10,400' - 1 attempt - good test - Good FP 10,394' - 2 attempts - 2 good tests - Good FP (Repeat) ~ ~ 10,378' - 1 attempt - good test - Dry / Tight. ~ 10,370' - 1 attempt - good test - Good FP 10,366' - 1 attempt - good test - Good FP 'Mud loss rate decreased from 80 bph to 12 bph. '; 05:30 - 06:00 0.50 EVAL P INT1 Monitor well. Breathed back 34 bbls in 30 min, then was static. ~ 06:00 - 09:30 3.50 EVAL P INT1 POH from 10,453' to 8,005' for Schrader MDT sampling. PU - 210k, SO - 100k, MW - 10.5 ppg. 09:30 - 14:00 4.50 EVAL P INT1 MDT pressure sampiing with Stethoscope tool. i 513'~pm, 2,240 psi. MDT Sampling Stations: 7,819' - 1 attempt - no seal. , 7,819' - 1 attempt - good test - Good FP 7,781' - 1 attempt - no seal. 7,782' - 1 attempt - good test - Good FP 7,720' - 1 attempt - good test - Good FP ~ 7,673' - 1 attempt - good test - Good FP 7,653' - 1 attempt - good test - Good FP "Lost 95 bbls from midni ht to noon. ,14:00 - 15:30 1.50 EVAL P INT1 Run in hole from 7,739' to 10,547' to obtain rest of samples ~ bypassed on way up. Fill pipe and orient high side. 15:30 - 18:00 2.50 EVAL P INTi MDT pressure sampling with Stethoscope tool. ~ 513 gpm, 2,700 psi, PU - 205k, SO - 100k. MDT Sampling Stations: Printed: 8/14/2007 426:18 PM ~ • BP ';EXPLC)RATIQN -,-- - - ~ar~ Legal Well Name: S-125 Common Well Name: S-125 Event Name: DRILL+COMPLETE Contractor Name: NABORS ALASKA DRILLING I Rig Name: NABORS 9ES Date Frorn - To Haurs Task Code NPT Ph 7/6/2007 15:30 - 18:00 2.50 j EVAL P ~ INT1 18:00 - 20:00 I 2.00 I DRILL i P I I INTi 20:0~ - 20:30 0.50 DRILL I P INT1 20:30 - 00:00 3.50 DRILL I P INT1 ~7/7/2007 ~00:00 - 04:30 ~ 4.50I DRILL i P ~ I INT1 04:30 - 08:30 I 4.001 DRILL I P I I INT1 08:30 - 10:30 j 2.00 DRILL P INT1 10:30 - 11:00 0.50 DRILL P INT1 11:00 - 12:00 1.00 BOPSU P INT1 12:00 - 13:00 1.00 BOPSU P INTi 13:00 - 14:00 1.00 CASE P INT1 14:00 - 15:00 ~ 1.00 CASE P INT1 15:00 - 21:00 6.00 CASE P INT1 21:00 - 21:30 0.50 CASE P INT1 21:30 - 22:30 1.00, CASE P INTi 22:30 - 23:30 1.00 CASE P INT1 23:30 - 00:00 0.50 CASE P INT1 ~ 7/8/2007 ~ 00:00 - 10:30 I 10.50 ~ CASE ~ P ~ ~ INT1 Spud Date: 6/28/2007 Start: 6/23/2007 End: 7/28/2007 Rig Release: 7/28f2007 Rig Number: 9ES ~se ~ Description af Operations 10,460' - 1 attempt - good test - Good FP 10,558' - 1 attempt -no seal. 10,557' - 1 attempt - good test - Dry / Tight 10,572' - 1 attempt - good test - Dry / Tight 10,573' - 1 attempt - good test - Dry / Tight 10,630' - 1 attempt - good test - Good FP Drill 3 ft to 10,743', 6,947' TVD. Circulate bottoms up @ 550 gpm, 3,040 psi, 70 rpm, 10.9k TQ, PU - 205k, SO - 100k, RWT - 140k. Calc ECD - 11.44 ppg, Act ECD - 11.29 ppg. Monitor well. Breathed back 39 bbls in 30 min, then was static. Attempt to POH dry. Hoie swabbing. Pump out of hole from 10,620' to 8,896' @ 2 bpm, 350 psi, PU - 210k, SO - 100k. 'Lost 142 bbls from noon to midnight. 'Lost 237 bbls for the day. `Lost 2,856 bbls total for intermediate section. Continue POH, pumping out from 8,896' to 5,358' C~3 2 bpm, 240 psi. Checking occationally to see if able to pull out dry. Well was static when pipe was stationary, but swabbing when pulling up. Check at 5,358' was able to pull dry. POH dry from 5,358' to 306'. Layed down top Ghost reamer. Was packed-off. Bottom Ghost reamer was clean. Monitored well @ shoe - 12 b h static loss rate. PJSM on nuclear source removal. Laydown BHA #2. Bit grade: 0-2-W T-N-X-1-NO-TD. Clear and clean rig floor. Pull wear bushing. PJSM. Flush BOP stack and install BOP test plug. *Lost 137 bbls from midnight to noon. Change out top VB rams to 7". Test rams to 250 psi low / 3,500 psi high. Laydown test joint and plug. Rig up to run 7" casing. Make dummy run with 7" hanger and landing joint. Make up and Baker-Lok shoe track with baffle collar. Check floats - OK. 15 bph static loss rate Run in hole to 4,052' with 98 jts, 4,007' of 7" 26# L-80 BTC-M casing plus BTC-M x TCII crossover joint. Fill every joint with Frank's tool, break circulation every 10 joints. Make up torque - 8,600 ft/Ibs, using BOL 2000 pipe dope. Rig up Torque Turn equipment for TCII casing. Run in hole from 4,052' to 4,318' with 7" 26# L-80 TCII casing. Make up torque - 10,100 fUlbs, using JetLube Seal Guard pipe dope. Circulate 1.5 annular volume. 4 bpm, 300 psi, PU - 118k, SO - 85k. Change out seal cup on Frank's fill-up tool. Well flowed back 25 bbls while changing out cup. `Lost 130 bbls from noon to midnight. 'Lost 267 bbls for the day. 'Lost 3,123 bbls totat for intermediate section. Continue running in hole with 7" TCII x BTC-M casing from 4,318' to -10,700' @ 1.5 min, filling every joint, breaking circulation every 10 jts @ 4 bpm 400 psi with diminishing returns. Nflfl[00: tl/ 14/NV / 4:L0: 18 YIVI • . BP E~PL~R~TIC~I~1 ' Page ~t 1~f 28 Operations Summary Repa-rt Legal Well Name: S-125 Common Well Name: S-125 Spud Date: 6/28/2007 Event Name: DRILL+COMPLETE Start: 6/23/2007 End: 7/28/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 7/28/2007 Rig Name: NABORS 9ES Rig Number: 9ES ' Date ' From - Ta Hours Task ~ Code NPT Phase ' Description of Qperations ~~ - 7/8/2007 10:30 - 11:00 0.50 _.- CASE P i _ INT1 Pick up landing joint and hanger, land casing on depth @ i 10,728'. PU - 300k, SO - 100k. Laydown Frank's tool, rig up HES cement head. I ~ Ran total of 166 jts of 7" 26# L-80 TCII casing. ~ `Lost 222 bbls from midnight to landed casing. 11:00 - 12:00 1.00 CEMT P ~ INTi Break circulation @ 2 bpm, 500 psi. Stage pump up to 3 bpm, I 525 psi with loss rate @ 62 bph. Reciprocate casing. ; *Lost 284 bbls total from midnight to noon. 12:00 - 16:30 4.50 CEMT i P I INT1 1st stage cement job: PJSM. Pump 5 bbls of water. Test lines to 4,000 psi - OK. ~ Pump 59 bbls of 11.0 ppg MudPush 11 spacer Q 4.8 bpm, ICP - ~ 526 psi, FCP - 544 psi. (minimal returns) ~ Pump 97 bbls of 12.5 ppg LiteCrete cement with 2 ppb CemNet ` @ 4.8 bpm, ICP - 544 psi, FCP - 359 psi. ~ ; Pump 17 bbls of 15.8 ppg Class "G" cement with 2 ppb ~ CemNet @ 4.5 bpm, 325 psi. I ; '14 bbls short on "G" cement due to clogging of equipment by Cemnet. Wash out cement to rig floor Tee. j Switch to rig. Kick out plug and displace cement with 408 bbls of 10.5 p mud with trace of returns. ist 240 bbis @ 5 bpm, ICP - 324 psi, FCP - 400 psi. ~ Next 100 bbls @ 3 bpm, ICP - 342 psi, FCP - 610 psi. ~ Last 68 bbls @ 2 bpm, !CP - 525 psi, FCP - 700 psi. Bump plu on schedule @ 95% effc to 1,200 psi. Check floats - OK. ~ CIP @ 16:26 hr. ~ ~ Reciprocated casing whole job untill 5 bbls prior to bumping ~ plug. PU - 289k, SO - 103k. ~ `Lost 356 bbls out of the 408 bbls pumped on cement displacement. , 16:30 - 20:30 4.00 CEMT P INT1 Load and lock in closing plug in cement head. Shear open ES ' cementer with 3,180 psi. No returns. Stage pump up- to 4~m ~ while cutting mud weight back to 9.8 ppg. ICP - 400 psi, FCP 350 psi. Started getting back circulation once lighter mud went around cementer. Obtained full returns when 9.8 ppq was all ~ ~~ the way around. 20:30 - 21:00 0.50 CEMT P INT1 Shut down pu~ mp~Ubserve well. Allow flow to go to zero. Gained 40 bbls before flow was static. Held cement PJSM , while observing well. 21:00 - 00:00 3.00 CEMT P INT1 2nd stage cement job: ' Pump 5 bbls of water. Test lines to 4,000 psi - OK. Pump 30 bbls of 11.0 ppg MudPush II spacer Q 2 bpm, ICP - 329 psi, FCP - 306 psi. Pump 80 bbls of 12.5 ppg LiteCrete cement with 1 ppb CemNet , @ 2 bpm, ICP - 283 psi, FCP - 95 psi. Release closing plug and kick out same with 5 bbls of water. Switch to rig. Displace cement with 270 bbis of 9.8 ppg mud. 1st 35 bbis @ 2.7 bpm, ICP - 125 psi, FCP - 160 psi. Next 117 bbls @ 2.3 bpm, ICP - 140 psi, FCP - 250 psi. Returns started diminishing. Next 38 bbis @ 1.4 bpm, ICP - 238 psi, FCP - 335 psi @ midnight. Pnntetl: Snaizoo~ 4:26:18 F'M ~ ~ • Date From - To Haurs Task Code ~ NPT ~Ph 7/9/2007 00:00 - 01:00 1.00 CEMT P I li INT1 01:00 - 03:00 I 2.001 CEMT ; P ; I INT1 03:00 - 04:00 1.00 CEMT P INT1 04:00 - 05:00 1.00 WHSUR P I INT1 05:00 - 05:30 0.50 BOPSUR P INT1 05:30 - 07:00 1.50 BOPSU P I '~ {NT1 07:00 - 09:00 2.00 BOPSU P ~ I INT1 09:00 - 10:00 I 1.001 CEMT I P I I INT1 10:00 - 10:30 0.50 CEMT P I INT1 10:30 - 11:00 0.50 CEMT P i I INT1 11:00 - 12:30 1.50 CEMT P INT1 12:30 - 15:30 3.00 CEMT P i INTi 15:30 - 17:00 1.50 CEMT P INT1 17:00 - 17:30 0.50 CEMT P ~ INT1 17:30 - 19:00 1.50 CEMT P INT1 19:00 - 20:00 1.00 CEMT P INT1 20:00 - 00:00 I 4.001 CEMT I P I I INT1 Continue 2nd stage cement job: Last 80 bbls Q 1.4 bpm, ICP - 335 psi, FCP - 383 psi. Pressure flat lined Q 383 psi for last 21 bbls of displacement. Bump on schedule Q 95% effc with 1,860 psi and close cementer. Bleed off pressure and check for casing flowback - OK. CIP Q 00:45 hr. Lost 76 bbls out of 170 after MudPush was qoinp around ES cementer. "Annulus was still flowing back slightly. Shut in well and wait 2 hours. Annulus pressure built up to 20 psi in 1 st hour then went to 10 psi by 03:00 hr. Bleed off the 10 psi and open well. Static - No flowback. Rig down casing and cementing equipment. Install 7" x 9 5/8" pack-off. Test same to 5,000 psi - 10 min - OK. Pick up BOP jetting tool and flush out stack. "Sim Ops: Perform OA LOT and injectivity test: 4,318 TMD, 3,213' ND 9.8 ppg MW 440 psi leakoff pressure EMW - 12.43 ppg. Injected 2.5 bbls @ 3 bpm, 800 psi. SIP - 150 psi. Change upper pipe rams from 7" to 3.5" X 6" VBR's. Test upper and lower VBR's with 4.5" and 3.5" test joints to 250 psi low / 3,500 psi high. Rig down test equipment and install wear bushing. PJSM. Pick up and make up BHA #3 cleanout assembly: Used 6.125" MT bit, without jets, 2 junk baskets, bit sub with float, 9ea 4 3/4" DCs, XO, Jars. Run in hole with cleanout assembly on 8 stands of HWDP and 1 stand of drillpipe to 1,144'. Service topdrive and crown. Cut and slip 234' of drilling line. Cleanout from under drawworks. Continue running in hole from 1,144' to 7,078'. PU - 150k, SO - 72k. Pick up topdrive, wash down and taq up on ES Cementer on depth @ 7.166'. Drill out ES Cementer. 350 gpm, 1,235 psi, 65 rpm, 6.8k TQ, RWT - 100k, WOB - 5-tOk. Circulate bottoms up Q 419 gpm, 1,560 psi, 65 rpm, 7.2k TQ. Run in hole from 7,168' to 10,614'. PU - 243k, SO - 84k. Wash from 10,614' to Baffle collar @ 10,636' (5.75' high) Confirm no junk or cement on top of collar. Circulate bottoms up Q 249 gpm, 806 psi. 1 SCR down, 1 pump only. POH (SLM) from 10,636' to 4,495'. `Sim Ops: Pumped 120 bbls of 9.8 ppg mud down OA @ 3 bpm, 780 psi ICP & FCP. Freeze protected OA with 85 bbls of dead crude @ 3 bpm, 700 psi ICP, 925 FCP, 420 SIP. 'Lost 76 bbls ot mud for the day (from 2nd stage cement job) Printed: 8/14/2007 4:26:18 PM • • BP'EXPLORA710N . Pag~ 13 of 28' £~pera#ivn~ Summary Report Legal Well Name: S -125 Common Well Name: S -125 Spud Date: 6/28/2007 Event Name: D RILL+C OMPLE TE Start : 6/23/2007 End: 7/28/2007 Contractor Name: N ABORS ALASK A DRI LLING I Rig R elease: 7/28/2007 Rig Name: N ABORS 9ES Rig N umber: 9ES Date From - To ` ~ Hours Task Code NPT Phase Descriptic~n c~f Uperations ~ - - 7/9/2007 ! 20:00 - 00:00 4.00 CEMT P , INT1 I --- '4 188 bbls total lost for intermediate section. 7/10/2007 ; 00:00 - 02:00 2.00 CEMT P ~ INT1 Continue POH (SLM) with cleanout assembly from 4,495' to 1 I 316 I 02:00 - 03:00 1.00 CEMT P I INTi ~'i . Stand back drill coliars. Laydown junk baskets and bit. No I ' i debris in baskets. Clear floor. ! 03:00 - 03:30 0.50 CASE P INTi Pressure test 7" casing to 3 500 - 30 min - Good test. ' 03:30 - 04:00 0.50 STWHIP P I PROD1 ' Pick up whipstock / miiling assembly and laydown to pipeshed. 04:00 - 06:30 2.50 STWHIP P ~ PROD1 I, Rig up tubing equipment. Pick up 7 joints of 4.5" 12.6# L-80 I~ TCII tubing and 2 TCII space out pup joints for whipstock taiipipe. Baker-Lok'd bull nose to 1 st joint. Pick up whipstock / ~ milling assembly, MW D and bumper sub. 06:30 - 13:30 7.00 STWHIP P ~ i PROD1 Run in hole with whipstock / milling assembly on 4 3/4" DC's, i ~ HWDP, and drillpipe from 372' to 10,586'. PU - 225k, SO - ~ 86k. ! 13:30 - 14:00 0.50 STWHIP P PROD1 Orient 20 deg left of highside. Wash down to Baffle collar @ ~ 10,636'. Set bottom anchor. Pick up 10k over to verify. Set !, ~ down 35k to shear pin. 309 gpm, 1,750 psi. Set to of whipstock @ 10,358'. ~ 14:00 - 14:30 I 0.50 STWHIP P PROD1 Pump 40 bbl EP MudLube sweep and displace hole to 9.5 ppg ~ FloPro mud. i 14:30 - 18:00 3.50 STWHIP P PROD1 Mili window from 10,358' to wellbore exit C~ 10,364'. 316 gpm, 'I i ~ 2,350 psi, 100 rpm, 4k TQ off, 6.3k TQ on, 2-5k W OB. ~ I ~ 'Before EP Mud~ube sweep: ~ PU - 225k, SO - 86k, 100 rpm, 13k TQ. i 'After EP MudLube sweep: ', PU - 150k, SO - 110k, 100 rpm, 4k TQ. I 18:00 - 19:00 1.00 STWHIP P PROD1 i Continue milling to bottom of window Q 10,371'. 316 gpm, ~ ~ 2,350 psi, 100 rpm, 4k TQ off, 6.3k TQ on, 2-5k WOB. I 19:00 - 21:00 2.00 STWHIP P ! PRODi Drill new hole to 10,384'. (20 ft total new hole from wellbore exit) 322 gpm, 2,180 psi, 100 rpm, 4k TQ off, 5.5k TQ on, 5k i WOB. Work through window with and without pumps, rotating and no rotation - No problem. 21:00 - 22:30 1.50 STWHIP P PROD1 ~ Pump a 25 bbl high vis sweep surface to surface. 322 psi, I ~ 2,180 psi, 100 rpm, 4k TQ. Had 10% increase in cuttings with ~ sweep back to surface. I22:30 - 23:00 0.50 STWHIP P PROD1 Perform FIT: 10,363' TMD, 6,766' TVD 9.5 ppg MW, 530 psi test pressure i 11.0 ppg EMW. ~ 23:00 - 00:00 1.00 STWHIP P PROD1 I Monitor well - OK. Pump dry job and POH from 10,358' to 8,565'. 7/11/2007 00:00 - 03:30 3.50 STWHIP P PROD1 Continue POH wth BHA #4 milling assembly from 8,565' to 647'- i03:30 - 04:30 1.00 STWHIP P ~ PROD1 Laydown 9ea 4 3/4" DC's, bumper sub, MWD and milling assembly. Milis in guage. 04:30 - 05:00 0.50 STWHIP P PROD1 Clear rig fioor. 05:00 - 05:30 0.50 STWHIP P PROD1 Make up BOP stack jetting tool and clean out BOP stack. I05:30 - 07:00 1.50 DRILL P ~ PROD1 ! Pick up and make up BHA #5: Used Hycalog DTX613M-615 6 1/8" bit, 1.5 deg PDM/AIM, bypass sub, NM Stab, MWD, ADNm 2ea NM Flex DC's, XO, i jt 4" DP, Jars. 07:00 - 13:00 6.00 DRILL P PROD1 Run in hole to 1,378'. Shallow hole test MWD - OK. Pick up ~ and make up Agitator and Shock sub. Run in hole to 2,123'. i Shallow hole test MW D- OK. Continue running in hole to Printed: 8/14/2007 4:26:18 PM ~ ~ ' E3 P' E~CPLQ RATIO N'' Page 1~ c~f 2~3 Qperations Summary Report Legal Well Name: S-125 Common Well Name: S-125 Spud Date: 6/28/2007 Event Name: DRILL+COMPLETE Start: 6/23/2007 End: 7/28/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 7/28/2007 Rig Name: NABORS 9ES Rig Number: 9ES ' ' ' Date ' i Frorn - To ~ Hours Task C~de NPT Phase Description of Operafian s -- -- - a 7/11/2007 --- 07:00 - 13:00 I ---- -- 6.00 - DRILL P _ PROD1 _ t0,253' filling pipe every 3,000'. PU - 144k, SO - 100k. 13:00 - 14:00 1.00 DRILL P PROD1 Cut and slip drilling line 80 ft. 14:00 - 14:30 0.50 DRILL P PROD1 Run in hole from 10,253' to 10,348'. Orient 20 deg left of high side and go through window without pumping and without problem. Wash to bottom. 14:30 - 16:30 2.00 DRILI P PROD1 Directional driil from t0,384' to 10,444'. 320 gpm, 3,110 psi off, 3,375 psi on, PU - 146k, SO - 107k, WOB - 5k. Unable to build ~ I any inclination. Sampies indicated mostly cement with 10% sand and calcium carbonate. i 16:30 - 17:00 ~ 0.50 DRILL N DPRB PROD1 Circulate bottoms up. 316 gpm, 3,120 psi, PU - 146k, SO - ' 107k, MW - 9.5 ppg. ~, 17:00 - 22:00 I 5.00 DRILL N DPRB PROD1 Monitor well - OK. Pump dry job and POH from 10,356' to I 218'. Layed down Agitator and Shock sub. I 22:00 - 23:00 1.00 DRILL N DPRB PROD1 PJSM on nuclear source. Break bit, laydown ADN, NM Stab, bypass sub, and PDM/AIM. Bit grade: 0-1-BT-G-X-I-NO-BHA. `No BHA anomalies. 23:00 - 00:00 1.00 DRILL N DPRB PRODi Pick up and make up BHA #6: New HTC MX-18HDX 6 1/8" bit, 2.12 deg PDM, MWD, 2ea NM Flex DC's, XO, 1 jt 4" DP, Jar. 7/12/2007 00:00 - 00:30 0.50 DRILL N DPRB PROD1 Continue making up BHA #6. Orient MWD. 00:30 - 01:30 1.00 DRILL N DPRB PROD1 Run in hole to 1,327'. Shallow hole test MWD - OK. 01:30 - 05:00 3.50 DRILL N DPRB PROD1 Continue running in hole from 1,327' to 10,287'. Fill drilipipe every 3,000'. 05:00 - 05:30 0.50 DRILL N DPRB PROD1 Service topdrive, crown and drawworks. 05:30 - 06:00 i 0.50 DRILL N DPRB PROD1 Run in hole from 10,287' to 10,348'. Orient 20 deg left of high side and go through window without pumping and without problem. Wash to bottom. Obtain SPR's. 06:00 - 14:00 8.00 DRILL P PROD1 Directional drill from 10,444' to 10,669'. 277 gpm, 2,290 psi off, 2,390 psi on, PU - 151k, SO - 101k, WOB - 10-15k. AST -6.28 hrs. 14:00 - 14:30 0.50 DRILL P PROD1 Circulate bottoms up. 277 gpm, 2,175 psi, PU - 151k, SO - 101k, MW - 9.5 ppg. 14:30 - 19:00 4.50 DRILL P PROD1 Monitor well - OK. Pump dry job and POH from 10,669' to 218'. 19:00 - 19:30 0.50 DRILL P ~ PROD1 Break bit, laydown 2.22 deg PDM. Bit grade: 0-0-W T-A-E-I-NO-BHA. 19:30 - 20:00 0.50 DRILL P PROD1 Clear and clean rig floor. 20:00 - 21:00 1.00 DRILL P PROD1 Pick up and make up BHA #7: Used Hycalog DTX613M-B15 6 ~ 1/8" bit, 1.5 deg PDM/AIM, bypass sub, NM Stab, MWD, ADN, ~ 2ea NM Flex DC's, XO, 1 jt 4" DP, Jars. 21:00 - 22:00 1.00 DRILL P PROD1 Run in hole to 1,366'. Shaliow hole test MWD - OK. Did not pick up Agitator and Shock sub. 22:00 - 23:30 1.50 DRILL N SFAL PROD1 MWD instrumentation failure. Broken air fitting (fatigue) to depth decoder on rig's drawworks drum clutch. Repair same. 23:30 - 00:00 0.50 DRILL P PROD1 Continue running in hole from 1,366' to 3,249'. 7/13/2007 00:0~ - 00:30 0.50 DRILL P PROD1 Service topdrive and crown. 00:30 - 02:30 2.00 DRILL P PROD1 Continue running in hole from 3,249' to 10,325. Fill drillpipe ( every 3,000'. PU - 165k, SO - 115k. Orient 20 deg left of high side. 02:30 - 03:30 1.00 DRILL P PROD1 Cut and slip drilling line 66'. 03:30 - 04:00 0.50 ~ DRILL P PROD1 Go through window OK. Set down @ 10,447'. Pump at low rate and able to slide past set down depth. Continue running in hole and wash last stand down to bottom. 260 gpm, 1,920 psi. Printed: 8/14/2007 4:26:18 PM • • BP EXPLt)FtA~`lU~l' ; Pa~e ~5 of 28' Operatians Summary Repc~rt Legal Well Name: S-125 Common Well Name: S-125 Spud Date: 6/28/2007 Event Name: DRILL+COMPLETE Start: 6/23/2007 End: 7/28/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 7/28/2007 Rig Name: NABORS 9ES Rig Number: 9ES ' Qate ' From - To k Haurs Task Code NPT Phase description of Qperatians 7/13/2007 04:00 - 06:00 2.00 i DRILL P PROD1 MadPass log per Geologist from bit depths of 10,669' to ' 10,447' Q 300 fph. Survey every 30'. 260 gpm, 1,900 psi. No i rotation. 06:00 - 06:30 0.50 DRILL ~ P PRODi Run in hole to 10,611' without problem. Wash last stand down to bottom @ 10,669'. 270 gpm, 2,235 psi. 06:30 - i2:00 5.50 DRILL P PROD1 Directional drill 6.125" hote from 10,669' to 11,185'. 272 gpm, i 2,305 psi off, 3,050 psi on, 80 rpm, 5.1 k TQ off, 6.9k TQ on, WOB - 5-15k, PU - 149k, SO - 95k, RWT - 120k. Survey every 30 ft. AST - 2.34 hrs, ART - 1.55 hrs. MW - 9.5 ppg. 12:00 - 00:00 12.00 DRILL P PROD1 Directional drill 6.125" hole from 11,185" to 11,611'." 280 gpm, ~ 2,350 psi off, 2,850 psi on, 80 rpm, 5.8k TQ off, 6.9k TQ on, WOB - 10-20k, PU - 155k, SO - 105k, RWT - 122k. Survey every 3d ft. AST - 220 hrs, ART - 320 hrs. MW - 9.6 ppg. 7/14/2007 00:00 - 01:30 1.50 i DRILL P PROD1 Directional drill 6.125" hole from 11,611" to TD @ 11,623' MD, ~ 6,749' TVD. 275 gpm, 2,505 psi off, 2,795 psi on, 45 rpm, 5.8k TQ off, 6.8k TQ on, WOB - 25k, PU - 155k, SO - 95k, RWT - 125k. Survey @ TD AST - 0.00 hrs, ART - 1.32 hrs. MW - 9.6 ppg. 01:30 - 02:15 0.75 DRILL P PROD1 Circulate bottoms up. 280 gpm, 2,470 psi, 65 rpm, 5.2k TQ. 02:15 - 06:00 3.75 DRILL P PROD1 MadPass log from bit depths of 11,623' to 10,763'. 250 gpm, 2,030 psi, 60 rpm, 5.8k TQ. MadPass from 10,763' to 10,600' ' without rotating. 06:00 - 06:30 0.50 ~ DRILL P PROD1 Pull up to 10,400 and wipe previous trip set down @ 10,447 - OK. 06:30 - 07:30 1.00 DRILL P PROD1 Pull up above window. Circulate 1.5 bottoms up. 285 gpm, 2,200 psi, 60 rpm, 4k TQ. Monitor weil - OK. 9.6 ppg MW. 07:30 - i 1:00 3.50 DRILL P PROD1 POH from 10,325' to 218'. PU - 166k, SO - 116k. 11:00 - 12:30 1.50 DRILL P PROD1 PJSM. Laydown BHA #7. Bit grade: 0-1-CT-G-X-I-NO-TD. 12:30 - 13:00 0.50 DRILL P PROD1 Clear and clean rig floor. 13:00 - 13:30 0.50 CASE P RUNPRD Rig up to run 4.5" liner. 13:30 - 17:00 3.5Q CASE P RUNPRD Pick up and Baker-Lok 4.5" liner shoe track. Check floats - OK. Continue running in hole to 1,409' with 32 joints total of 4.5" 12.6# L-80 IBT-M liner, 2 marker joints, Baker HMC liner hanger, and HRD ZXP liner top packer. Pick up 1 stand of drillpipe to 1,500'. 17:00 - 17:30 0.50 CASE P RUNPRD Rig down liner running equipment. Circulate liner volume @ 4 bpm, 170 psi. PU - 50k, SO - 48k. 17:30 - 00:00 6.50 CASE P RUNPRD Continue running in hole with 4.5" liner on HWDP and drilipipe from 1,409' to 10,273' Q 1 min per stand, filling pipe every 10 stands. 7/15/2007 00:00 - 01:00 1.00 CASE P RUNPRD Circulate string capacity. 21 f gpm, 1,000 psi. PU - 156k, SO - ~ 113k. 01:00 - 02:00 1.00 CASE P RUNPRD Run in through window OK. Run in open hole to 11,606. Set down 20k. Make up topdrive and wash down from 11,606 to 11,612'. 220 gpm, 1,300 psi. 02:00 - 02:30 0.50 CASE P RUNPRD Make up Baker rotating plug head. Rig up to circulate. 02:30 - 03:00 0.50 CASE P RUNPRD Wash from 11,612' to 11,618'. 218 gpm, 1,250 psi. PU - 165k, SO - 104k. 03:00 - 04:30 1.50 CEMT P RUNPRD Circulate and condition mud while Dowell primed pumps and batched mix cement. PJSM @ 03:00 hr. 218 gpm, 1,250 psi. Reciprocated liner in 35' strokes. PU - 165k, SO - 104k. Printed: 8/14/2007 4:26:18 PM • ~ BP EXPLdRATI{~N ' Page ~6 of 28 Opera#ians Summary R~pc~rt Legal Well Name: S-125 Common Well Name: S-125 Spud Date: 6/28/2007 Event Name: DRILL+COMPLETE Start: 6/23/2007 End: 7/28/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 7/28/2007 Rig Name: NABORS 9ES Rig Number: 9ES ' Date From - To Hours 7ask Code NPT Phase Deseription of C~perations 7/15/2007 04:30 - 05:30 1.00 I CEMT ~ P RUNPRD Cement 4.5" liner. i, 5 bbls water, test lines to 4,500 psi - OK. ~ Reciprocate liner in 35' strokes ~ 60 bbls of 11.0 ppg Mudpush @ 3.8 bpm, 890 psi ICP, 700 psi ~ FC P I ~ 38 bbls of 15.8 ppg class "G" Premium cement @ 3.8 bpm, ~ 635 psi ICP, 150 psi FCP. , Wash up cement line to tee on rig floor. I Kick out plug and displace cement with 120 bbis. 20 bbls of 9.5 ppg perf pill @ 5.6 bpm, 170 psi ICP, 170 psi ( FCP. I ~ 88 bbls of 9.6 ppg mud @ 5 bpm, 500 psi ICP, 1,550 psi FCP , 7 bbls of 9.6 ppg mud @ 3 bpm, 1,065 psi ICP, 1,110 psi FCP. j Last 5 bbls @ 2 bpm, 875 psi ICP, 915 FCP. ~ Stopped reciprocating and positioned liner on depth @ 11,615', 9 bbls prior to plug bumping, PU - 155k, SO - 95k. ~ Bump plug and set liner hanger with 3,500 psi. j Bleed off and check floats - OK. CIP Q 05:32 hr. ~ Shoe Q 11,615' ; Landing collar @ 11,527' (PBTMD) Liner top packer @ 10,212,8' 05:30 - 05:45 0.25 CASE P I RUNPRD Pick up to 160k, slack off and set down 40k to set packer. Pick up to 125k, start rotating @ 15 rpm and set down 40k again while rotating. Stop rotating and pick up to 150k. Pressure up ~ string to 1,000 psi and pick up and observe pressure loss. ~ Start pumping Q 3 bpm and continue picking up total of 25'. 05:45 - 06:15 0.50 CASE P ~ ~ RUNPRD Bring pump rate up to 10 bpm, 2,980 psi ICP, 2,590 psi FCP. Returned all MudPush II spacer and 11 bbls of sidewalk cement. 06:15 - 06:45 0.50 CASE P RUNPRD Laydown Baker plug head and pup joint. POH 2 joints and rack back stand to 10,155'. 06:45 - 08:00 1.25 CASE P RUNPRD Displace hole from 9.6 ppg FlowPro mud to 9.5 ppg brine. 8 i bpm, 1,295 psi ICP, 910 psi FCP. 08:00 - 10:00 2.00 CASE P RUNPRD POH from 10,155' to 4,878'. PU - 155k, SO - 117k. 10:00 - 10:30 0.50 CASE P RUNPRD Pick up Baker plug head and pup joint. Make service break and laydown same. 10:30 - 12:30 2.00 CASE P RUNPRD Continue POH from 4,878 to liner running tool. Make service breaks on tool and laydown same. Dogs were out. 12:30 - 13:30 1.00 BOPSU P ( RUNPRD Pull wear bushing and rig up to test BOPE. 13:30 - 19:30 6.00 BOPSU P ( RUNPRD Pressure test BOPE to 250 psi low, 3,500 psi high for 5 min ~ each test. Used 4.5" and 3.5" test joints. Tested accumulator. Test witnessed by AOGCC rep Lou Grimaldi, BP WSL Tom Anglen, NAD TP Kelly Cozby. ~~~r~~S~~ 19:30 - 20:00 0.50 BOPSU P RUNPRD Rig down test equipment, install wear bushing. 20:00 - 20:30 0.50 CASE P I RUNPRD Pressure test 4.5" liner and liner too oacker to 3.500 psi - 30 ~ min - good test. ' Cement reached 1,000 psi compressive strength @ 15:20 hr. 20:30 - 21:00 0.50 PERFO P OTHCMP PJSM. Rig up to pick up DPC perf assembly. 21:00 - 22:30 1.50 PERFO P OTHCMP Pick up 2.5" PowerJet Omega 6 SPF perf guns. 535 net feet loaded i 38 fully loaded guns I I 9 partial guns Printed: 8/14/2007 4:26:18 PM ~ ~ Legal Well Name: S-125 Common Well Name: S-125 Spud Date: 6/28/2007 Event Name: DRILL+COMPLETE Start: 6/23/2007 End: 7/28/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 7/28/2007 Rig Name: NABORS 9ES Rig Number: 9ES Date From - To Hours Task Code NPT Phase Description of Qperations 7/15/2007 i 21:00 - 22:30 1.50 ~ PERFO P j ' OTHCMP I, 2 blank gun punchers ~I ~, ~ ~ 4 blanks I I I S partial blanks ~ 22:30 - 23:00 t 0.50 PERFO P ; ~ OTHCMP ; Rig down perf gun equipment. Rig up 2 7/8" PAC equipment. 23:00 - 00:00 1.00 PERFO P I OTHCMP i Pick up 8 joints of 2 7/8" PAC drill pipe. 7/16/2007 i 00:00 - 00:30 0.50 PERFO P ; OTHCMP Make up crossovers and pup joint. Rig down 2 7/8" PAC , ~ equipment. ', ~ 00:30 - 01:00 0.50 PERFO P iI OTHCMP Service topdrive and crown. i 01:00 - 05:30 4.50 PERFO P OTHCMP Run in hole with DPC perf assembly from 1,417' to landing 1 collar @ 11,527'. Tagged 2 ft high @ 11,525' Pick up 10 ft to set guns on depth for bottom perf @ 11,515', top perf @ 10,390. ~ ~ ! PU - 175k, SO - 106k ~ 05:30 - 06:00 0.50 PERFO P ' OTHCMP PJSM. Begin gun firing sequence. Good indication of guns ~ I '' j firing. Lost 1/2 bbl. 06:00 - 06:30 0.50 PERFO P OTHCMP POH from 11,515' to 10,377'. PU - 175k. No overpull. 06:30 - 08:00 1.50 PERFO P OTHCMP Monitor well - static. Circulate bottoms up Q t98 gpm, 675 ~ psi. Lost 5 bbls while circulating. 08:00 - 10:30 2.50 PERFO P i OTHCMP Monitor weli - static. POH laying down drillpipe from 10,377' to 6,919'. ; 10:30 - 12:00 1.50 PERFO P ~ OTHCMP ; Cut and slip drilling line 70 ft. Cleanout from under drawworks. 12:00 - 16:30 4.50 PERFO P i OTHCMP ~ Continue POH from 6,919' to perf assembly. 16:30 - 17:30 1.00 PERFO P ~; OTHCMP PJSM. Rig up and laydown 8 joints of 2 7/8" PAC. 17:30 - 20:30 3.00 PERFO P '~~ OTHCMP PJSM. Laydown perf guns from 1,161' to 403' tally depth. ' Misfire on 4 guns #23 to #20. Guns were blown out on body. ( I No more quns after #20. Left quns #19 to #1 in hole (All fully Successful perfs: 10,390' to 10,530' - 140' - 840 shots. j , 10,580' to 10,600' - 20' - 120 shots. ! ~ 10,650' to 10,680' - 30' - 180 shots. ~ ~ 10,750' to 10,920' - 170' - 1,020 shots. ~ ~ 10,970' to 11,027' - 57' - 342 shots. 417 total feet / 2,502 shots. Planned, unsuccessful perfs: ~ 11,027' to 11,515' - 488' - 2928 shots. 20:30 - 21:00 0.50 PERFO P OTHCMP Clear and clean rig floor. 21:00 - 00:00 3.00 FISH N DFAL OTHCMP Prepare for perf gun fishing. Load pipe shed with drillpipe and strap same. ; ~ Estimated top of fish Q 11,122'. (Deepest possible depth) ~ ~ i `Lost total of 15 bbls of 9.5 ona brine to oerfs for the dav. 7/17/2007 00:00 - 00:30 I 0.50 FISH N DFAL OTHCMP Pick up fishing tools to rig floor. Strap and caliper same. 00:30 - 01:30 i 1.00 FISH N DFAL OTHCMP PJSM. Pick up and make up 8aker fishing assembly, BHA #8: Overshot with 2.5" grapple, 3 1/8" Bumper sub and oil jars, x-over, pump-out sub. 01:30 - 04:00 2.50 FISH ~ N DFAL I OTHCMP I Rig up and pick up 35 joints of 2 7/8" PAC drilipipe. Rig down ~ i 2 7/8" equipment. 04:00 - 10:00 6.00 FISH N DFAL OTHCMP i Run in hole with fishing assembly, picking up 4" drillpipe i singles from 1,096' to 8,653' 10:00 - 11:00 ; 1.00 FISH N ~ DFAL OTHCMP Continue run in hole with fishing assembly, on 4" stands in derrick from 8,653' to 10,212. PU - 160k, SO - 104k. Continue i into 4.5" liner to 10,325' md. Printed: 8/14/2007 4:26:18 PM ~ ~ '~Event Name: DRILL+COMPLETE Start: 6/23/2007 End: 7/28/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 7/28/2007 Rig Name: NABORS 9ES Rig Number: 9ES ,' Date From - To Hours Task Code ~ NPT ~ Phase Description of C?perafiQns 7/17/2007 11:00 - 11:30 0.50 FISH N DFAL OTHCMP Set down @ 10325. Pull 10-15k over to pull loose. Continue down. Intermittent set downs and over pulls. Attempt to ; circulate but w/ only partial returns. Returns gradually returned I ' to minor losses @ 1-3 bpm. ~ ~ 11:00 - 12:30 , 1.50 FISH N DFAL OTHCMP Attempt to circulate bottoms up from top perforation @ 10,390. I 88 gpm, 1520 psi. Hole packing off and losing returns at any increase in rate. Losses at 108 bph to perforations. Unable to circulate bottoms up. 12:30 - 15:30 3.00 FISH N DFAL OTHCMP Worked down to top of fish @-11,112' md rotating @ 9 rpm, i 1.5 bpm, 225 psi. PU - 170k, SO - 75k. PU & set down ~ ! repeatedly, with no change in depth. Pumped down with no ~ pressure increase. Rotate down with slight torque increase starting @ -11,110' md. 15:30 - 20:30 5.00 FISH N DFAL OTHCMP POOH w/ fishing assembly trom 11,122' to F!T-40 x 2-7/8" PAC XO @ 1,099'. 20:30 - 21:30 1.00 FISH N DFAL OTHCMP PJSM. RU tongs and equipment to stand back 2-7/8" PAC ; ~ pipe in derrick. i 21:30 - 22:30 i 1.00 FISH N DFAL OTHCMP POH to surface w/ fishing BHA and no fish. out of hole at 22:30. 22:30 - 23:00 0.50 FISH N DFAL OTHCMP RD overshot BHA. No internal wear on overshot grapple. Some grooves from rotating visible on bottom bevel of overshot just outside ID of overshot. Consult w/ town on plan forward. 23:00 - 00:00 1.00 F1SH N DFAL OTHCMP RU to run 2.5" ID x 3.75" OD burnshoe BHA. MU Burnshoe, 1 wash-pipe extension BHA. 7/18/2007 00:00 - 01:30 ( 1.50 FISH N DFAL OTHCMP RIH w/ 3.75" OD x 2.5" ID burnshoe BHA on 2-7/8" PAC Pipe to 1,108' MD 01:30 - 02:30 1.00 FISH N DFAL OTHCMP MU string magnet & boot baskets above PAC pipe. Crossover to 4" HT-40. 02:30 - 05:30 3.00 FISH N DFAL OTHCMP RIH on 4" HT-40 stands from derrick from 1,158' md to Top of liner at 10,212' md. No problems RIH. Less than 5-7k drag ~ seen on RIH. 05:30 - 07:00 ~ 1.50 FtSH N DFAL OTHCMP RIH inside 4-1/2" liner from 10,212' to 11,102' md. 07:00 - 08:00 1.00 FISH N DFAL OTHCMP Take parameters above fish: PU - 174k, SO - 103k, RTW - 133k, 2 bpm @ 267psi, 3 bpm @ 625 psi, 50 rpm, TQ - 5.5k. Slack off and,tag top of fish @ 11,122' md. Saw torque increase to between 6.5k & 7.5k and pump pressure increase to --800 psi while working over fish. Pick up 90' w/o any pressure drop. Run back down to bottom and tag up at 11,126' I md. 08:00 - 09:30 1.50 FISH N DFAL OTHCMP POH from 11,126' md to 10,365'. String hanging up and pulling up to 20k overpull. Run back in hole to 10,400' md. Bring pumps online at 3 bpm, 660 psi. Pump next two stands out of hole from 10,400 to top of liner at 10,212' md. 09:30 - 13:00 I 3.50 FiSH N DFAL OTHCMP POH from 10,212' md to top of 2-7/8" PAC pipe Q 1,106' md. No overpulls on trip out of hole. 13:00 - 13:30 0.50 FISH N DFAL OTHCMP PJSM. RD Boot baskets & String magnets. No debris in baskets or on magnet. RU to handle 2-7/8" PAC 13:30 - 14:30 1.00 FISH N DFAL OTHCMP POH on 2-7/8" PAC pipe to surface w/ 20' gun length fish at ~ surface. I 14:30 - 17:00 , 2.50 FISH N DFAL OTHCMP Remove fish from burnshoe BHA. 1 quart of 1-2mm thick metal flakes trapped above fish inside burnshoe. Break burnshoe from BHA, inspect, and reassembte for another run. 17:00 - 18:30 1.50 FISH N DFAL OTHCMP RU and run back in hole w/ 2.5" ID x 3.75" OD burnshoe on Printed: 8/14/2007 426:18 PM ~ ~ ' BP'' EXPLC7RATION '. Page 19 c~f 28 Opera~tions Summary Report Legal Well Name: S-125 Common Well Name: S-125 Spud Date: 6/28/2007 Event Name: DRILL+COMPLETE Start: 6/23/2007 End: 7/28/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 7/28/2007 Rig Name: NABORS 9ES Rig Number: 9ES date From - To Hours Task Code { NP7 Phase : Description of Operations 7/18/2007 I 17:00 - 18:30 i 1.501 FISH I N 18:30 - 22:30 I 4.00; FISH I N 22:30 - 00:00 I 1.50 I FISH i N 17/19/2007 I 00:00 - 01:00 i 1.001 FISH I N ~I 01:00 - 04:30 I~ 3.50 i FISH N I 04:30 - 06:30 I 2.00 FISH N i 06:30 - 07:00 ~ 0.00 i, FISH N 07:00 - 09:30 I 2.50 ~ FISH ~ N 09:30 - 11:30 I 2.00 i FISH I N 11:30 - 12:00 ; 0.50 I FISH I N 12:00 - 13:30 I 1.501 FISH I N 13:30 - 16:45 I 3.251 FISH I N 16:45 - 18:00 1.25I FISH N 18:00 - 19:00 1.00 FISH N 19:00 - 19:30 ~ 0.50 i FISH I N DFAL OTHCMP 2-7/8" PAC pipe to 1,106' md. Install boot baskets and string magnet. Crossover to 4" HT-40 DP. DFAL OTHCMP RIH on 4" HT-40 stands from 1,106' md to top of liner at 10,212' md. no obstruction observed while RIH. Record parameters above liner top: PU - 175k, SO - 95k, 280 psi @ 2 bpm, 560 psi @ 3 bpm. DFAL OTHCMP RIH pumps off and tag up on top of fish at 11,143' md w/ 10k slackoff. Attempt to bring pumps oniine, but packing off to 1200 psi. Pick up to 11,135' md. PU - 186k, SO - 102k, RTW - 131 k. Stage pumps to 3 bpm, 625 psi. Rotate 25 rpm w/ 6.1k torque. Slack off and tag top of fish at 11,143' md. Saw increase in pump pressure to 670 psi and torque to 7.1 k ft-Ibs. Work burnshoe over fish to 11,149' md. - 2 feet over fish, saw a 20k breakover while slacking off. DFAL OTHCMP POH w/ 2.5" ID x 3.75" OD burnshoe and fish from deepest tag at 11,149' to top of liner at 10,212' md. Pull 25k over @ 10,337' md. Stage up pumps to 3 bpm, 660 psi and pump last two stands out of hole to laner top - OK. DFAL OTHCMP POH w/ burnshoe BHA from 10,212' md to boot baskets and string magnets, No debris in boot baskets or on magnets. DFAL OTHCMP Change over to handle 2-7/8" PAC pipe and POH 11 stands to surface w/ burnshoe BHA. DFAL OTHCMP Extract fish from burnshoe. Fish is one 20' lenqth of gun split in 8-9 areas on gun avery couple of feet w/ swelling around splits to an OD of 3+ inches. DFAL OTHCMP Redress burnshoe fishing BHA & prepare to RIH. Mobilize extra washpipe from Baker shop. Clean & inspect tools. Ready floor for MU BHA. DFAL OTHCMP Slip and cut 64' of driiling line. Service topdrive. Clean out under drawworks while waiting on washpipe to arrive. DFAL OTHCMP MU fishing BHA #4 w/ 3.625" OD x 2.5" ID dress off shoe, 2 joints 3.5" washpipe (55 feet), 3-1/8 Lub bumper sub, 3-1/8" oil jar, pump out sub. DFAL OTHCMP RIH w! fishing BHA #4 on 2-7/8" PAC pipe to 1151' md. MU boot baskets and string magnet. Crossover to 4" HT-40 DP. DFAL OTHCMP RIH on 4" HT-40 stands from 1,151' md to top of liner at 10,212' md. no obstruction observed while RIH. Record parameters above liner top: PU - 175k, SO - 95k, 280 psi @ 2 bpm, 560 psi @ 3 bpm. DFAL OTHCMP RIH from top of liner @ 10,212' md to tag up on top of fish at 11,164' md w/ 5k slackoff. DFAL OTHCMP Pick back up 15' and attempt to bring pumps online, but packing off to 1400 psi. Rotate 25 rpm and pick up slowly and , establish circulation. PU - 188k, SO - 103k, RTW - 133k. ~ Stage pumps to 3 bpm, 650 psi. Rotate 25 rpm w/ 6.1 k torque. Slack off and tag top of fish at 11,164' md. Saw increase in pump pressure to 750 psi and torque to 8.5k ft-Ibs. Work burnshoe over fish to 11,i70' md. Rotated w/ up to 10k WOB and saw no further progress. Shut down rotation and slacked off up to 35k over but no further progress. DFAL OTHCMP POH w/ burnshoe and fish from deepest tag at 11,170' to top of liner at 10,212' md. Pull 25k over @ 10,365' md. Stage up I pumps to 3 bpm, 750 psi and pump last two stands out of hole Printed: S/14/2007 4:26:18 PM ~ ~ BP EXPLC)RATION Page 20 ~f 28' Operations Summary R~port Legal Well Name: S-125 Common Well Name: S-125 Spud Date: 6/28/2007 Event Name: DRILL+COMPLETE Start: 6/23/2007 End: 7/28/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 7/28/2007 Rig Name: NABORS 9ES Rig Number: 9ES [3ate From - To Hours Task Code NPT Phase ' Description of ~perations 7/19/2007 19:00 - 19:30 0.50 i FISH i N DFAL OTHCMP to liner top - OK. 19:30 - 23:30 4.00 ~ FISH ~ N DFAL OTHCMP POH w/ burnshoe BHA from 10,212' md to boot baskets and ~ ~, string magnets Q 1,051' bit depth. No debris in boot baskets or on magnets. 23:30 - 00:00 0.50 FISH N ~ DFAL OTHCMP Change over to handle 2-7/8" PAC pipe. 7/20/2007 00:00 - 01:00 1.00 FISH N ~ DFAL OTHCMP POH w/ 11 stands 2-7/8" PAC pipe from 1,151 to surface w/ I burnshoe fishing BHA#4. ' 01:00 - 02:00 1.00 FISH N i DFAL OTHCMP Extract fish from burnshoe. Fish is two 20 lengths of gun (guns 16 & 17) split in severai areas on gun every 2-4 feet w/ swelling around splits to an OD of 2.8 inches. Connection ~ between two gun lengths was still intact though no set screws I were visible and upper and lower adapter eonnections were I torqued until gun carrier housings were shouldered on ~ connecting adapter. Bottom of Iower was sheared in the same ~ ! spot as previous two guns but not split apart and unwrapped. 02:00 - 03:00 1.00 FISH N DFAL OTHCMP Redress and MU fishing BHA #5 w/ 3.625" OD x 2.5" ID dress off shoe, 2 joints 3.5" washpipe (55 feet), 3-1/8 Lub bumper sub, 3-1/8" oil jar, pump out sub. 03:00 - 04:30 ~ 1.50 FISH N DFAL OTHCMP RIH w/ fishing BHA #5 on 2-7/8" PAC pipe to 1151' md. MU boot baskets and string magnet. Crossover to 4" HT-40 DP. 04:30 - 08:00 3.50 FISH N DFAL OTHCMP RIH on 4" HT-40 stands from 1,151' md to top of liner at 10,212' md. No obstruction observed while RIH. Record parameters above liner top: PU - 183k, SO - 95k, 280 psi @ 2 bpm, 560 psi @ 3 bpm. 08:00 - 08:30 0.50 FISH N DFAL OTHCMP RIH from top of liner @ 10,212' md to tag up on top of fish at 11,206' md w/ 5k slackoff. 08:30 - 09:00 0.50 FISH j N DFAL OTHCMP Rotate 25 rpm and pick up slowly and establish circulation. PU - 188k, SO - 95k. Stage pumps to 3 bpm, 600 psi. Rotate 25 I rpm w/ 6.2k torque. Slack off and tag top of fish at 11,206' md. Saw increase in pump pressure to 710 psi and torque to 8.3k ft-Ibs. Work burnshoe over fish to 11,210' md. PU 10' and lost psi. RIH and work back over fish. Shut down rotation and slacked off up to 35k over. Saw weight break over 15k and gained 1.5 feet. Pick back up and pump pressure stayed Q 710+ psi. POOH 09:00 - 10:00 1.00 FISH N DFAL OTHCMP POH w/ burnshoe and fish from deepest tag of 11,206' to top of liner at 10,212' md. Stage up pumps @ 10,800' md to 3 bpm, 710 psi and pump 7 stands out of hole to liner top - OK. No i ~ restriction or overpulls. 10:00 - 15:00 5.00 FISH ! N DFAL OTHCMP POH w/ burnshoe BHA from 10,212' md to boot baskets and I ~ ~ string magnets @ 1,151' bit depth. No debris in boot baskets ~ I I or on magnets. 15:00 - 15:45 0.75 FISH N DFAL OTHCMP RD boot baskets and string magnet. Change over to handle 2-7/8" PAC pipe. 15:45 - 16:30 0.75 FISH N DFAL OTHCMP POH w/ 11 stands 2-7/8" PAC pipe from 1,151 to surface w/ I burnshoe fishing BHA#5. 16:30 - 17:45 1.25 FISH N j DFAL OTHCMP Extract fish from burnshoe. Fish is one 20' ienqth of qun (qun ~ 15 s lit in several areas on gun every 2-3 feet w/ swelling ' I around splits. Bottom of lower was sheared in the same spot % as previous guns and split apart and unwrapped. 17:45 - 18:15 0.50 FISH I N DFAL OTHCMP Change out burnshoe. MU fishing BHA #6 w/ 3.75" OD x I2.625" ID dress off shoe, 2 joints 3.5" washpipe (55 feet), 3-1/8 ( ~ Lub bumper sub, 3-1/8" oil jar, pump out sub. Printed: 8/14/2007 426:18 PM ~ ~ ~~ ' BP EXPLORATIQ' Oaera#14nS $Ummar~ ',Legal Well Name: S-125 ICommon Well Name: S-125 Event Name: DRILL+COMPLETE Start: 6/23/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 7/28/2007 Rig Name: NABORS 9ES Rig Number: 9ES Date From - To Hours Task Code NPT~ Phase Des Spud Date: 6/28/2007 End: 7/28/2007 --~ --- - -- , .r...... , ... r.....,,..... ... - 7/20/2007 18:15 - 19:30 1.25 FISH ~ N i ~ DFAL i OTHCMP RIH w/ fishing BHA #6 on 2-7/8" PAC pipe to 1154' md. MU ~ boot baskets and string magnet. Crossover to 4" HT-40 DP. RU to handle HT-40 DP. 19:00 - 22:30 3.50 FISH N DFAL OTHCMP RIH on 4" HT-40 stands from 1,154' md to top of liner at 10,212' md. No obstructions. Parameters above liner top: PU - 173k, SO - 98k, 615 psi Q 3 bpm, 950 psi @ 4 bpm. 22:30 - 23:30 1.00 FISH N DFAL OTHCMP RIH from top of liner @ 10,212' md to tag up on top of fish at ' 11,228' md w/ 5k slackoff. 23:30 - 00:00 0.50 FISH N DFAL OTHCMP Rotate 25 rpm and pick up slowly and establish circulation. PU - 185k, SO - 99k, RTW - 124k. Stage pumps to 3 bpm, 670 I i psi. Rotate 25 rpm w/ 6.5k torque. Slack off & tag top of fish ~ at 11,228' md. Pump pressure to 720 psi & torque to 8.9k ; ft-Ibs. Work burnshoe over fish to 11,230' md. Shut down j rotation & slack off up to 35k over. Saw weight break over 15k ~ ' and gained 2 feet. Pick back up and pump pressure stayed @ 710+ psi. POOH. 7/21/2007 00:00 - 00:30 0.50 FISH N DFAL OTHCMP Rotate 25 rpm and pick up slowly and establish circulation. PU - 185k, SO - 99k, RTW - 124k. Stage pumps to 3 bpm, 670 psi. Rotate 25 rpm w/ 6.5k torque. Slack off & tag top of fish at 11,228' md. Pump pressure to 720 psi & torque to 8.9k ft-Ibs. Work burnshoe over fish to 11,230' md. Shut down rotation & slack off up to 35k over. Saw weight break over 15k and gained 2 feet. Pick back up and pump pressure stayed @ 710+ psi. POOH. 00:30 - 02:00 1.50 FISH N DFAL OTHCMP Pump out of hole 3 bpm, 710-680 psi w/ burnshoe and fish from deepest tag of 11,230' to top of liner at 10,212' md. No I restriction or overpulls. Pull above liner top and bring pumps to 4bpm, 1050psi (100 psi over 4 bpm pressure during RIH) 02:00 - 06:00 4.00 FISH N DFAL ' OTHCMP POH w/ burnshoe BHA#6 from 10,212' md to boot baskets and string magnets Q 1,154' bit depth. No debris in boot baskets or on magnets. 06:00 - 07:30 1.50 FISH N DFAL OTHCMP RD boot baskets and string magnet. Change over to handle 2-7/8" PAC pipe. 07:30 - 08:30 1.00 FISH N DFAL OTHCMP POH w/ 11 stands 2-7/8" PAC pipe from 1,154 to surface w/ burnshoe fishing BHA#6. 08:30 - 09:30 1.00 FISH N DFAL OTHCMP Extract fish from burnshoe. Fish is one 20' length of gun (gun 14 s lit in several areas on gun every - eet w swelling around splits. Bottom of lower was sheared in the same spot as previous guns, split apart and unwrapped. 09:30 - 11:30 2.00 FISH N DFAL OTHCMP Clean & inspect burnshoe. MU fishing BHA #7 w/ 3.75" OD x 2.625" ID dress off shoe, 2 joints 3.5" washpipe (55 feet), 3-1/8 Lub bumper sub, 3-1/8" oil jar, pump out sub. 11:30 - 13:00 1.50 FISH N DFAL OTHCMP RIH w/ fishing BHA #7 on 2-7/8" PAC pipe to 1,216' md. MU boot baskets and string magnet. Crossover to 4" HT-40 DP. ~ , RU to handle HT-40 DP. 13:00 - 15:45 2.75 FISH N DFAL OTHCMP RIH on 4" HT-40 stands from 1,154' md to 10,160' md. No obstructions. 15:45 - 17:00 1.25 FISH N DFAL OTHCMP Service topdrive & crown. Cut & slip 96' of drilling line. 17:00 - 17:30 0.50 FISH N DFAL OTHCMP RIH from 10,160' - 10,212' md. Take parameters above liner top: PU - 182k, SO - 97k, 610 psi @ 3 bpm, 950 psi @ 4 bpm. 17:30 - 18:00 0.50 FISH N DFAL OTHCMP RIH from top of liner @ 10,212' md to tag up on top of fish at 11,247' md w/ 5k slackoff. 18:00 - 19:00 1.00 FISH N DFAL OTHCMP Rotate 25 rpm, pick up slowly and establish circulation. PU - Printed: 8/14/2007 426:18 PM ~ ~ 7/21/2007 ~ 18:00 - 19:00 1.00 FISH N 19:00 - 20:00 I 1.00 I FISH I N 20:00 - 23:30 3.50 FISH N j 23:30 - 00:00 0.50 FISH N 7/22/2007 ~ 00:00 - 00:30 0.50 FISH N I 00:30 - 01:15 OJ5 FISH N 01:15 - 02:00 I 0.751 FISH I N 02:00 - 02:30 I 0.501 FISH I N 02:30 - 04:00 I 1.501 FISH I N 04:00 - 07:30 I 3.50 I FISH I N 07:30 - 08:15 I 0.751 FISH I N 08:15 - 08:45 I 0.501 FISH I N 08:30 - 10:00 I 1.501 FISH I N 10:00 - 14:00 I 4.00 I FISH I N 14:00 - 14:30 I 0.501 FISH I N 14:30 - 15:30 I 1.001 FISH I N NPT Phase Descriptic~n of ~perations DFAL ~ OTHCMP ! 185k, SO - 98k, RTW - 132k. Stage pumps to 3 bpm, 735 psi I Rotate 25 rpm w/ 6.4k torque. Slack off & tag top of fish or fill i at 11,247' md. Pump pressure to 1100 psi & torque to 8.5k ' ft-Ibs. Work burnshoe over fish to 11,254' md. Shut down ', rotation & siack off up to 35k over. Pressure increased to 1280 I psi. Pick back up and pump pressure stayed @ 1150+ psi. ~ I POOH. DFAL ~ OTHCMP I Pump out of hole 3 bpm, 980-1150 psi w/ burnshoe and fish i from deepest tag of 11,254' to top of liner at 10,212' md. No ' restriction or overpulls. DFAL OTHCMP 'I POH w/ burnshoe BHA#7 from 10,212' md to boot baskets and I string magnets @ 1,216' bit depth. No debris in boot baskets. j 5-10 quarter size metal pieces found on magnets. DFAL OTHCMP 'I RD boot baskets and string magnet. DFAL OTHCMP I~ Change over to handle 2-7/8" PAC pipe. DFAL OTHCMP i~ POH w/ 12 stands 2-7/8" PAC pipe from 1,216 to surface w/ 'i burnshoe fishing BHA#7. DFAL OTHCMP ; Extract fish from burnshoe. Fish is one 20' length of gun ! un#13) split in several areas on gun every 2-3 eet w ', swelling around splits. Bottom of lower was sheared in the '~ same spot as previous guns, split apart and unwrapped. ~I Possible 1"x3" piece of gun carrier housing blown off when ~i guns fired. DFAL OTHCMP I Clean & inspect burnshoe. MU fishing BHA #8 w/ 3.75" OD x 2.625" fD dress off shoe, 2 joints 3.5" washpipe (55 feet), 3-1/8 ~ Lub bumper sub, 3-1/8" oil jar, pump out sub. DFAL OTHCMP 'i RIH w/ fishing BHA #8 on 2-7/8" PAC pipe to 1,216' md. MU '; boot baskets and string magnet. Crossover to 4" HT-40 DP. RU to handle HT-40 DP. DFAL OTHCMP ~, RIH on 4" HT-40 stands from 1,216' md to 10,212 md. No obstructions. Took parameters above liner depth: 275 psi @ 2 i bpm, 605 psi @ 3 bpm. DFAL OTHCMP II RIH from top of liner @ 10,212' md to tag fish at 11,270' md w/ I5k slackoff. DFAL OTHCMP Rotate 25 rpm and pick up and establish circulation. PU - 188k, SO - 97k, RTW - 130k. Stage pumps to 3 bpm, 680 psi. I Rotate 25 rpm w/ 5.8k torque. Slack off and tag top of fish at I 11,270' md. Saw increase in pump pressure to 1340 psi and !, torque to 82k ft-Ibs. Shut down rotation and slacked off up to I35k over. Saw weight break over at 25k. Work burnshoe over fish to 11,273' md w/ 35k SO. Pick back up and pump pressure stayed Q 1300+ psi. POOH DFAL OTHCMP POH w/ burnshoe and fish from deepest tag of 11,273' to top of ~, liner at 10,212' md. Pulled 20k over at 10,925' md. Stage up ~ii pumps @ 10,925' md to 2 bpm, 1425 psi and pump 7 stands ; out of hole to liner top - OK. DFAL OTHCMP ; POH w/ burnshoe BHA from 10,212' md to boot baskets and ! string magnets Q 1,216' bit depth. No debris in boot baskets or on magnets. DFAL OTHCMP RD boot baskets and string magnet. Change over to handle 2-7/8" PAC pipe. DFAL OTHCMP ~i POH w/ 12 stands 2-7/8" PAC pipe from 1,216 to surface w/ I ; burnshoe fishing BHA#8. Printed: 8/14/2007 426:18 PM ~ ~ BP E~PLQRATION ' Page 23 ofi 28 Op~ratiar~s Summary Repart Legal Well Name: S-125 ~ Common Well Name: S-125 Spud Date: 6/28/2007 Event Name: DRILL+COMPLETE Start: 6/23/2007 End: 7/28/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 7/28/2007 Rig Name: NABORS 9ES Rig Number: 9ES Date From - To Hours Task Cade NPT Phase ~escription of Operations 7/22/2007 15:30 - 17:30 I 2.OOii FISH N DFAL OTHCMP Retrieve 84' Fish consisting of 4 Guns, Gun #'s 12,11,10, and ~ 9. Gun joints 12/11 and 11 1 were rea e oge I ; 10/9 was compressed together - top of gun 9 was driven into I I, bottom of gun 10 by -8 inches. Gun 12 was 3 feet into burn ' shoe. New top of Fish at 11,355'. 17:30 - 18:00 '~ 0.50I FISH N DFAL OTHCMP Rig Up to R1H. Change out flat bottom burnshoe to 3.625" OD , ~ x 2.5" ID. Make Up BHA # 9 with 2 joints (55 feet) 3.5" wash ', j Pipe, Bumper Sub, Oil Jars, XO Pump Out Sub, 1 Joint PAC. 18:00 - 19:30 I, 1.50 i FISH N DFAL OTHCMP RIH w/ fishing BHA #9 on 2-7/8" PAC pipe to 1,307' md. MU i boot baskets and string magnet. Crossover to 4" HT-40 DP. I ~' ~ RU to handle HT-40 DP. 19:30 - 23:00 I 3.50 FISH N DFAL OTHCMP RIH on 4" HT-40 stands from 1,307' md to 10,212 md. No i ~ obstructions. Took parameters above liner depth: PU - 168k, SO - 100k, 600 psi @ 3 bpm, 950 psi @ 4 bpm. 23:00 - 00:00 1.00 ( FISH N DFAL OTHCMP RIH from top of liner @ 10,212' md to tag fish at 11,354' md w/ ~ j 5k slackoff. 7/23/2007 00:00 - 00:30 I, 0.50 ~ FISH N DFAL OTHCMP Rotate 25 rpm and pick up from Top of fish @ 11,354' to I ~ 11,325' and estabfish circulation. PU - 178k, SO - 100k, RTW - I ~ 130k. Stage pumps to 3 bpm, 725 psi. Rotate 25 rpm w/ 6.3k I ~ torque. Siack off and tag top of fish at 11,354' md. Saw ~, I increase in pump pressure to -775 psi and torque to 7.Ok ft-Ibs. , Shut down rotation and slacked off up to 35k over. Saw I weight break over at 25k. Work burnshoe over fish to 11,359' I md w/ 35k SO. Pick back up and pump pressure stayed Q 780+ psi. POOH 00:30 - 02:00 1.50 FISH N DFAL OTHCMP Pump out of hole 3 bpm, 780-750 psi w/ burnshoe and fish ! from deepest tag of 11,359' to top of liner at 10,212' md. No restriction or overpulls seen. Pull above liner top and bring pumps to 4bpm, 1000psi (50 psi over 4 bpm pressure during RIH) 02:00 - 06:00 I 4.00 FISH N DFAL OTHCMP PON w/ burnshoe BHA from 10,212' md to boot baskets and ~, string magnets @ 1,307' bit depth. 06:00 - 06:30 ~, 0.50 ~ FISH N DFAL OTHCMP RD boot baskets and string magnet. Change over to handle i I 2-7/8" PAC pipe. 06:30 - 07:30 1.00 FISH N DFAL OTHCMP POH w/ 12 stands 2-7/8" PAC pipe from 1,216 to surface w/ , burnshoe fishing BHA#9. 07:30 - 08:00 ~ 0.50 FISH N DFAL OTHCMP RD washpipe. No fish in burnshoe. Wear easily visible on I inside of burnshoe. 08:00 - 08:30 0.50 I FISH N DFAL OTHCMP Rig Up to RIH. Make Up BHA #10 with 3.75 OD x 2.5" grapple I ID, Bumper Sub, Oil Jars, XO Pump Out Sub, 1 Joint PAC. 08:30 - 10:00 I 1.50 FISH N DFAL OTHCMP RIH w/ fishing BHA #10 on 2-7/8" PAC pipe to 1,305' md. MU boot baskets and string magnet. Crossover to 4" HT-40 DP. li RU to handle HT-40 DP. 10:00 - 13:00 I 3.00 FISH N DFAL OTHCMP RIH on 4" HT-40 stands from 1,307' md to 10,196 md. No I obstructions. 13:00 - 14:00 1.00 FISH N DFAL OTHCMP I Cut & Slip 86' of drilling line, clean under drawworks. 14:00 - 14:30 0.50 FISH N DFAL OTHCMP RIH to top of liner at 10,212' md. Took parameters above liner depth: PU - 174k, SO - 100k, 600 psi @ 3 bpm, 1010 psi C°3 4 bpm. 14:30 - 15:00 0.50 FISH N DFAL OTHCMP RIH from top of liner @ 10,212' md to 10,600' md and hole took ~ 10k+ weight. Stage pumps to 3 bpm, 925 psi. Wash down to 10,675' md - OK. Continue RIH pumps off. Tag fish at 11,354' md w/ 5k slackoff. Printed: 8/14/2007 426:18 PM , ~ ~ ' BFy E?~PLC?RATiC3N' Page 24 of 28 4peratic~ns ~~mmary Repo~k Legal Well Name: S-125 Common Well Name: S-125 Spud Date: 6/28/2007 Event Name: DRILL+COMPLETE Start: 6/23/2007 End: 7/28/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 7/28/2007 Rig Name: NABORS 9ES Rig Number: 9ES Date Fresm - To Hours ~ Task Code NPT Phase Descriptifln of Operations - ~ -_ ._----~-- -- - 7/23/2007 15:00 - 16:00 1.001 FISH ' N DFAL OTHCMP Rotate 25 rpm and pick up and establish circulation. PU - ~, ~, 186k, SO - 100k, RTW - 127k. Stage pumps to 3 bpm, 760 I ', psi. Rotate 30 rpm w/ 5-6k torque. Stop rotation and tag top of i fish at 11,354' md. PU & SO without pumps and tag @ same depth. I Bring pumps to 3bpm, 720 psi, rotate 30 rpm, slack off and engage fish. Saw increase in pump pressure to 950 psi and i torque to 8.7k ft-Ibs. Shut down rotation and slacked off up to I 45k over and work overshot to 11,357' md. 16:00 - 16:45 0.75 j FISH N DFAL OTHCMP POH w/ overshot and fish from deepest tag of 11,357' to top of I I liner at 10,212' md. Pulled over at 10,380' md. Stage up ! i pumps @ 10,380' md and pump 1 stand out. Shut down I I pumps and pull out of hole to liner top - OK. Pump pressure @ ~ top of liner was 800psi @ 3 bpm & 1175psi @ 4 bpm. 16:45 - 20:30 3.75 FISH N DFAL OTHCMP POH w/ overshot BHA from 10,212' md to boot baskets and ii string magnets @ 1,305' bit depth. RD same and RU to handle 2-7/8" PAC. 20:30 - 21:30 1.00 ~I FISH N DFAL OTHCMP POH w/ 13 stands 2-7/8" PAC pipe from 1,305 to surface w/ ~ ~ overshot BHA. 21:30 - 23:30 i 2.00 ~~! FISH N DFAL OTHCMP Retrieve Fish consisting of 8 remaining Guns, Gun #'s 8-1. ~ Gun number 8 was similar to prior guns w/ swelling and deformities. Gun number 7 was lodged up into the bottom of ~ gun 8. Guns 7-1 had 100% of shot fired correctly. 2-3 shots ~ per gun length were out of scallops by about an inch but , j appeared to have fired correctly. 23:30 - 00:00 0.50 FISH i N DFAL OTHCMP MU cleanout BHA - 3.75" 4-bladed junk mill, Bumper Sub, Oil ~ Jars, XO Pump Out Sub, 1 Joint PAC. 7/24/2007 00:00 - 02:00 2.00 CONDH N DFAL OTHCMP RIH w/ cleanout BHA on 2-7/8" PAC pipe to 1,348' md. MU I boot baskets and string magnet. Crossover to 4" HT-40 DP. RU to handle HT-40 DP. 02:00 - 05:00 3.00 CONDH N DFAL OTHCMP RIH on 4" HT-40 stands from 1,348' md to 10,212 md. 05:00 - 06:30 1.50 CONDh! N DFAL OTHCMP CBU Q 300gpm, 3240psi @ liner top. Pump 25 bbl hi-vis sweep surface to surface. No increase in cutting once sweep around. 06:30 - 07:30 1.00 I CONDH N DFAL OTHCMP RIH on 4" HT-40 stands from liner top @ 10,212' md to 11,341' j md. SO - 94k. At --11,150' md, hole started taking weight, SO i - 88k. PU & attempt to bring pumps online but pressure built ! up to 3,400 psi w/o any returns. 07:30 - 09:00 1.501 CONDH N DFAL OTHCMP POH w/ BHA to -10,900 and attempt to pump but still packed off. Continue POH to above liner top at 10,212' md. 09:00 - 09:30 0.50 CONDH N DFAL OTHCMP Work pipe inside 7" casing and attempt to clear packoff. Unsuccessful. pressure up to 3500 psi. Rotate up to 60 rpm. Unable to pump any fluid downhole. 09:30 - 15:30 6.00 CONDH N DFAL OTHCMP POH wet from above top of liner at 10,212' md to PAC pipe. I Stand back boot baskets and magnet. POH on 14 stands 2-7/8" PAC pipe to surface. 15:30 - 16:30 1.00 ~I CONDH N DFAL OTHCMP POH and inspect BHA. Break apart BHA and mill, bit-sub, and ! I 2' of bum er sub were acked off internall w/ small metal shavin s and debris. 16:30 - 17:00 0.50 CONDH N DFAL OTHCMP Flush BHA components and make back up. 17:00 - 21:30 4.50 CONDH N DFAL OTHCMP RIH w/ cleanout BHA (Baker fishing BHA #12) on 2-7/8" PAC from surface to 1,348' md. MU boot baskets, string magnet, and insert 4" Pump-out sub. RIH on 4" HT-40 DP to top of liner Printed: 8/14/2007 4:26:18 PM ~ ~ BP'° EXPL~RATION ' Page 25 of 28 Operations Summary R~pc~rt Legal Well Name: S-125 Common Well Name: S-125 Event Name: DRILL+COMPLETE Contractor Name: NABORS ALASKA DRILLING I Rig Name: NABORS 9ES Date I From - To Hc~urs Task Code NPT 7/24/2007 17:00 - 21:30 4.50 CONDHL~ N 21:30 - 00:00 2.50 CONDHIl N 7/25/2007 I00:00 - 01:00 I 1.00 I CONDHU N 01:00 - 02:30 I 1.501 CONDHU N 02:30 - 04:00 I 1.501 CONDHLI N 04:00 - 05:30 I 1.501 CONDHLl N 05:30 - 06:30 I 1.00 I CONDHIl N 06:30 - 07:15 OJ5 CONDH~ N 07:15 - 08:45 1.50 CONDH N 08:45 - 12:30 3.75 CONDHI~ N i 12:30 - 13:30 1.00 CONDHUN 13:30 - 14:30 1.00 CONDH N 14:30 - 15:00 0.50 CONDH N 15:00 - 15:30 0.50 CONDH N 15:30 - 16:00 0.50 CONDH N 16:00 - 16:30 0.50 PERFO N 16:30 - 19:30 3.00 PERFO N 19:30 - 20:00 I 0.501 PERFOBI N 20:00 - 00:00 I 4.001 PERFOBI N Spud Date: 6/28/2007 Start: 6/23/2007 End: 7/28/2007 Rig Release: 7/28/2007 Rig Number: 9ES ~se 1 descriptic~n o# C?perations DFAL ~ OTHCMP at 10,212' md. DFAL 'i OTHCMP RIH washing and rotating down from top of liner to 11,154' md. ~ PU - 168k, SO - 100K, RTW - 122K, 25rpm, 165 gpm, 1048 ! psi, 5.5-6.5k TQ. No signs of annular packoff. DFAL I OTHCMP RIH washing and rotating down from 11,154' md to PBTD @ ~ 11,525' md. PU - 168k, SO - 100K, RTW - 122K, 25rpm, 165 gpm, 1048 psi, 6.0-7.5k TQ. No signs of annular packoff. Shut down pumps and rotation for last 30 feet and tag up on landing collar on depth at 11,525' md set 10k down to confirm. DFAL OTHCMP PU 15' and stage pumps and rotation to 8 bpm, 3600 psi & 85 ~ rpm. Reciprocate pipe in 30' strokes while pumping 25 bbl 10ppg weighted hi-vis sweep followed by 25 bbls brine followed by 25 bbls 10ppg weighted hi-vis sweep. Saw increase in perf debris smelling sand on bottoms up. Shakers cleaned up between bottoms up and sweep returning. Once sweep at surface, similar amount of sand came over shakers and cleaned up after sweep past. No losses to formation. DFAL OTHCMP Backream out of liner from 11,515' to 10,240' md at 8 bpm, 3300 psi, 60 rpm. No obstruction seen. No overpulls. No losses. DFAL OTHCMP Wash back to 11,510' md, 8 bpm, 3600 psi, no rotation. No , problems RIH. Only small amounts of sand coming across ~ shakers. No losses to formation. DFAL i OTHCMP Cirirculate in 20 bbl perf pill at 8 bpm, 3650 psi. Reciprocate ; pipe in 30' strokes and rotate 60 rpm while sending pili downhole. DFAL ~ OTHCMP Shut down pumps, monitor well - OK. POH from 11,510' md to above linertop @ 10,212' md. DFAL OTHCMP Pump 30 bbl Hi-vis sweep surface to surface and displace w/ clean 9.5 ppg brine. 8 bpm, 3580 psi, 90 rpm, 9.1 k TQ, PU - 182k, SO - 82k, RWT - 118k. Reciprocate 70' while circulating sweep around and displacing to new brine. No increase in cuttings when back to surface. DFAL OTHCMP Shut down pumps, monitoir well - OK. POH from top of liner 10,212' md to 1,401' md. DFAL OTHCMP Lay down boot baskts and string magnet. Boot baskets empty and only siight metal debris on magnets. Change over rig fioor to handle 2-7/8" PAC pipe. DFAL OTHCMP Lay down 16 joints of 2-7/8" PAC pipe. DFAL OTHCMP Stand back 9 stands of 2-7/8" PAC pipe for perforating run. DFAL OTHCMP Lay down cleanout BHA. DFAL OTHCMP Ciean and clear rig floor of all fishing tools. DFAL OTHCMP PJSM. Rig up to pick up DPC perf assembly. DFAL ~ OTHCMP PJSM. Pick up 2.875" PJ Omega 2906 - 6 SPF perf guns. i 435 net feet loaded 17 fully loaded guns 6 partial guns 3 blank gun punchers 9 stands 2-7/8" PAC spacer. DFAL OTHCMP Make up crossovers and pup joint. Rig down 2 7/8" PAC equipment. Rig up to run 4" DP. DFAL OTHCMP Run in hole with DPC perf assembly from 1,413' to landing collar @ 11,525'. Tagged on depth w/ 1~k @ 11,525' Pick up Printed: S/14/2007 426:18 PM ~ ~ ' BP EXPLORATION Pac~e 26 of 28' C}perafiions Summ;ary Report Legal Well Name: S-125 Common Well Name: S-125 Spud Date: 6/28/2007 Event Name: DRILL+COMPLETE Start: 6/23/2007 End: 7/28/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 7/28/2007 Rig Name: NABORS 9ES Rig Number: 9ES Date ~ From - To Haurs Task Code NPT Phase Deseriptron of Qperations 7/25/2007 20:00 - 00:00 4.00 PERFO N DFAL - OTHCMP II - to 11,375 to set guns on depth for bottom perf @ 11,375, top ~ perf @ 10,370. I PU - 200k, SO - 95k. 7/26/2007 00:00 - 01:00 1.00 PERFO N DFAL OTHCMP 'I PJSM. Begin gun firing sequence. Good indication of guns ! a fir ing. Guns fired at 5 minutes and 6 minutes after firing I ~ ; sequence sent. Lost 1/2 bbl each time shots seen. Fluid level i ' static after initial loss. ; Planned perforation depths: i ! 10,370' to 10,450' - 80'. ',10,970' to 11,035' - 65'. i 11,085' to 11,375' - 290'. ~ 435 total feet. 01:00 - 01:30 0.50 PERFO N DFAL OTHCMP POH from 11,375' to 10,320'. PU - 200k. No overpull. 01:30 - 02:30 1.00 PERFO N DFAL OTHCMP Monitor well - static. Circulate 1.5 bottoms up @ 8 bpm, 1890 psi. No losses while circulating. 02:30 - 06:00 3.50 PERFO N DFAL OTHCMP ~ POH from 10,320 to 1,410' md - top of 2-7/8" PAC pipe. 06:00 - 07:30 1.50 PERFO N DFAL OTHCMP I Change over to handle 2-7/8" PAC pipe. Lay down 12 joints of ~~ 2-7/8" PAC. ~ 07:30 - 10:30 3.00 PERFO N DFAL OTHCMP I PJSM. POH laying down 2-7/8" perf guns. All shots fired ! correctly. 10:30 - 11:30 1.00 PERFO N DFAL OTHCMP ' Clean & Clear rig floor of SLB Perforating equipment. 11:30 - 12:00 0.50 CONDH N DFAL OTHCMP % RU to run 4" DP and cleanout BHA. 12:00 - 12:30 I 0.50 CONDH N DFAL OTHCMP j MU cleanout BHA - 3.5" Muleshoe, 1 jt 3.5" HW DP, XO, 2 junk I baskets, Jar assy. i2:30 - 16:30 4.00 CONDH N DFAL OTNCMP ~; Trip in hole on 4" HT-40 stands from derrick to 10,211' md. 16:30 - 17:30 1.00 CONDH N DFAL OTHCMP ~' Service Topdrive & Crown. Cut & slip 100' of drilling line. 17:30 - 18:00 0.50 CONDH N DFAL OTHCMP Wash down cleaning out linertop from 10,211' md to 10,226' I md. PU - 192k, SO - 98k, RTW - 116, 3bpm, 390 psi. No obstructions seen. Tag up on base of tieback sleeve on depth at 10,223' md w/ tool joint above muleshoe. Pick up to 10,211' md and increase pump rate to 500 gpm, 2750 psi. Wash down I to 10,224 - OK. 18:00 - 19:00 1.00 CONDH N DFAL OTHCMP Pump 25 bbi hi-vis sweep surface to surface at 500 gpm, 2550 j psi, 80 rpm, 10k TQ. No increase in cuttings when sweep back I, to surface. Shut down, monitor well - Static. 19:00 - 00:00 5.00 CONDH N DFAL OTHCMP I POH laying down drillpipe from 10,211' md to 4,240' md. 7/27/2007 00:00 - 04:00 4.00 CONDH N DFAL OTHCMP i POH laying down drillpipe from 4,240' md to surface. RIH w/ 2 i stands still in derrick, lay down 6 joints. 04:00 - 05:00 1.00 CONDH N DFAL OTHCMP ~ ~ Clean and clear rig floor from laying down drill pipe. 05:00 - 06:00 1.00 WHSUB P RUNCMP PJSM. Pull wear bushing. Make dummy run with landing joint and tubing hanger. I 06:00 - 09:00 3.00 RUNCO RUNCMP Rig up to run completion. Rig up HES I-wire. ~ 09:00 - 10:00 1.00 RUNCOI ~1 SFAL RUNCMP Replace faulty dump-valve on casing tongs. Mobilize part from I 2ES. 10:00 - 22:00 12.00 RUNCO P RUNCMP PJSM. Run in hole with 3.5" 9.3# 13CR-80 Vam Top I completion to 4,803' as per running detail. Baker Lok all , connections below Baker S-3 Production packer. Torque turn _ i connections to 2,900 fUlbs using Jet Lube Seal Guard ~ lubricant. Connect I-W ire to HES "Symphony Plus" Gauge Carrier and run through 3.5" Cannon clamps on every joint. Test continuity every 500'. 22:00 - 23:00 ~ 1.00 RUNCOI~ IP I RUNCMP Rig up 4.5" chrome tubing running equipment. ~ Printed: 8/14/2007 426:18 PM ~ ~ V nary rseport Legal Well Name: S-125 Common Well Name: S-125 Spud Date: 6/28/2007 Event Name: DRILL+COMPLETE Start: 6/23/2007 End: 7i2812007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 7/28/2007 Rig Name: NABORS 9ES Rig Number: 9ES Date ; From - To Hours Task Code NPT Phase Description of ~peratiQns 7/27/2007 ~ 23:00 - 00:00 1.00 RUNCO P RUNCMP Run 4.5" 12.6# 13Cr-80 Vam Top tubing in hole from 4,803' md ~ ~ to 5,191' md. Torque turned connections to 4,440 fUlbs using ' ~ Jet Lube Seal Guard lubricant. 7/28/2007 1 00:00 - 07:00 7.00 I RUNCO RUNCMP Continue to run 4.5" 12.6# 13Cr-80 Vam Top tubing in hole ~ from 5,191' to top of in 4.5" liner top assembly @ 10,192'. ~ I Torque turned connections to 4,440 fUlbs using Jet Lube Seal I Guard lubricant. 07:00 - 08:00 1.00 RUNCO RUNCMP ! Space out completion. Lay down 1 joint of tubing. Spaceout ; pup joints not needed. Instail blast rings on tubing hanger and make up landing joint. Spaced out for insi e o . mer top tieback sleeve. 08:00 - 08:30 0.50 RUNCO RUNCMP i Run I-W ire through tubing hanger and terminate. Test to 5,000 ~ psi - 10 min - OK. 08:30 - 09:00 0.50 WHSUR P RUNCMP i Land tubing. PU - 120k, SO - 75k (incl 30k blocks) Run in lock i ; down screws on tubing head. Bot of W LEG - 10,218' Tops: X Nipple - 10,196' X Nipple w/ RHC-M Plug - 10,175' Baker S-3 production packer - 10,150' "Symphony Plus" Gauge Carrier - 10,128' X Nipple - 10,107' "XD" DURO Siiding Sleeve - 10,083' 2 jts 3.5" tubing GLM w/ Shear Valve - 9,994' 45 jts 3.5" tubing Dummy GLM - 8,553' MD 29 jts 3.5" tubing Dummy GLM - 7,617' MD 68 jts 3.5" tubing Dummy GLM - 5,457' MD 1 jt 3.5" tubing XO to 4.5" 76 jts 4.5" tubing X Nipple - 2,213' MD 51 jts 4.5" tubing 0 psace out pups 1 jt 4.5" tubing Hanger pup jt with biast rings Tubing hanger with 4.5" TCfI lifting threads Ran total of 151ea 3.5" I-Wire full clamps Ran total of 133ea 4.5" I-Wire full clamps No losses while running completion. 09:00 - 11:00 2.00 WHSUR P RUNCMP Rig up circulating lines. Reverse circulate 122 bbls of clean 9.5 ppg brine followed by 4 bbls of inhibited 9.5 brine, followed by 164 bbls of clean 9.5 ppg brine to spot inhibited brine between the GLM #1 with shear valve and the packer. 3 bpm, 290 psi. 11:00 - 13:30 2.50 RUNCO RUNCMP Drop 1-5/16" bali and roller stem rod assembly with 1.375" fishing neck and let it fall to XN below the packer. Pulled out and layed down landing joint. Close blind rams and pressure Printed: S/14/2007 426:18 PM ~ ~ BP E~PL.QF~ATI{JN' Page 28 of 28 : Qperati~ns ~ummary Report Legal Weli Name: S-125 Common Well Name: S-125 Spud Date: 6/28/2007 Event Name: DRILL+COMPLETE Start: 6/23/2007 End: 7/28/2007 Contractor Name: NABORS ALASKA DRILLING I Rig Release: 7/28/2007 Rig Name: NABORS 9ES Rig Number: 9ES i ' Date From - To Hours i Task Code NPT Phase Description of Qperations 7/28/2007 11:00 - 13:30 2.50 RUNCOM P ~ RUNCMP up tubing to 3,500 psi to set packer. Hold pressure for tubing test for 30 min - OK. Bieed off pressure down to 2,500 psi. Pressure up annulus to 3,500 psi and hold for 30 min - OK. I Bleed off annulus pressure to 0, then tubing pressure to 0. ' ' ~ I Pressure back up on annulus to shear DCR valve in #1 GLM , i ~ station. Sheared at 2,500 psi. Pump 3 barrels each way ' ! i through vaive to confirm pumpability at 2 bpm, 1000psi. 13:30 - 14:30 1.00', WHSUR% P ~ RUNCMP Drain BOP stack. Install 2-Way Check in tubing hanger with ~ ~ T-bar. Test TWC from below with 1,000 psi - OK. 14:30 - 16:00 1.50 i BOPSU~ P RUNCMP PJSM - nipple down BOPE. 16:00 - 19:30 3.50 i, W HSUR ~ P RUNCMP Nipple up tree adaptor flange. Test same to 5,000 psi - 10 min i - OK. Move production tree from back of cellar. Set double ' j master tree on adaptor flange. Nippie up tree. 19:30 - 21:00 1.50~ WHSUR I P RUNCMP Attempt to pressure test tree. TWC leaking. Close master and ~~ ~ test - OK. Change out TWC w/ lubricator & retest to 5000 psi - ; G Pass. 21:00 - 22:30 1.501 W HSUR P RUNCMP PJSM with LRHOS. Pressure test lines to 3,000 psi - OK. ' i Reverse in 102 bbls of 60 deg diesel down tubing annulus @ i 300 psi ICP, 1000 psi FCP. 22:30 - 23:30 1.00, WHSUR' P RUNCMP U-tube diesel back to tubing. 3,050' MD, 2,500' TVD. 23:30 - 00:00 0.50I WHSUR I P ` RUNCMP Install BPV with T-bar and test same to 1,000 psi from below - ~ OK. Instali VR plugs in IA. Install gauges on tree. Secure well and clean out ceilar. Release rig from S-125 operations at 23:59 hr, 7/28/2007 for i i i i I I I ~ ~ i ~ i I ~ rig move to S-215i. ( Printed: 8/14l2007 4:26:18 PM ~~ ;~ ~ ~,~~. S-125PB1 Su Report Date: 6•Jul-07 Clienc; BP Exploration Alaska Field: Prudhoe Bay Unit - WOA Structure / Slot: S•PAD / S-125 Well: S-125 Borehole: S•125P61 U WI/API#: 500292336170 Survey Name I Date: S-125PB1 / July 6, 2007 Tort I AHD / DDI / ERD ratio: 180.703° / 7611.67 ft/ 6.328 / 1.096 Grid Coordinate System: NAD27 Alaska State Planes, Zone 04, US Feet Location LaULong: N 70.35518670, W 149.03416747 Location Grid N/E Y/X: N 5980430.190 ftUS, E 618930.370 ftUS Grid Convergence Angle: +0.90962581° Reaort Verticai Section Azimuth: 256.170° Vertical Section Origin: N 0.000 ft, E 0.000 ft ND Reference Oatum: Rotary Table TVD Reference Elevation: 63.90 ft relative 2o MSL Sea Bed / Ground Level Elevation: 35.40 ft relative to MSL Magnetic Declination: 23.575° Total Field Strength: 57640.328 nT Magnetic Dip: 80.910° Declination Date: June 28, 2007 Magnetic Declination Model: BGGM 2007 North Reference: True North Total Con Mag North -> True North: +23.575° Local Coordinates Referenced To: Well Heatl ~ Comments ~easured ~nciination 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 700 ft ftUS ftUS Hlt U. UU U.UU u.uu -6S.yU U.vu u.uu u.uu u.uu u.~~ v.v~ u.~~ oyu~wa~.ia niaaau.ai iv iu.o~oiaoi~ w i4y.w4ioiwi GYD CT DMS 100. 00 0.42 276.75 36.10 100.00 0.34 0.37 0.37 0.04 -0.36 0.42 5980430.23 618930.01 N 70.35518682 W 149.03417042 200. 00 0.30 290.83 136.10 200.00 0.90 0.99 0.99 0.18 -0.97 0.15 5980430.35 618929.39 N 70.35518719 W 149.03417536 300 .00 2.21 303.33 236.07 299.97 2.43 3.18 3.13 1.33 -2.83 1.92 5980431.48 618927.52 N 70.35519034 W 149.03419043 400. 00 3.81 303.08 335.93 399.83 6.01 8.43 8.36 4.20 -7.22 1.60 5980434.28 618923.08 N 70.35519819 W 149.03422612 500. 00 6.37 300.85 435.52 499.42 12.22 17.30 17.23 8.86 -14.77 2.57 5980438.82 618915.46 N 70.35521092 W 149.03428741 600 .00 8.79 302.13 534.64 598.54 21.48 30.49 30.42 15.77 -26.01 2.43 5980445.55 618904.12 N 70.35522979 W 149.03437863 700 .00 9.11 288.49 633.44 697.34 33.48 45.97 45.81 22.35 -39.99 2.14 5980451.90 618890.04 N 70.35524775 W 149.03449215 800 .00 8.77 274.30 732.23 796.13 47.42 61.44 60.68 25.43 -55.10 2.23 5980454.74 618874.88 N 70.35525617 W 149.03461485 900 .00 10.62 266.72 830.81 894.71 63.73 78.25 76.28 25.48 -71.90 2.24 5980454.52 618858.08 N 70.35525630 W 149.03475130 MWD+IFR+MS 945 .91 11.64 264.61 875.85 939.75 72.47 87.11 84.46 24.80 -80.74 2.39 5980453.70 618849.26 N 70.35525445 W 149.0348 1041 .92 12.66 264.08 969.71 1033.61 92.47 107.32 103.39 22.80 -100.84 1.07 5980451.39 618829.19 ~ N 70.35524899 W 149.034 1137 .36 13.40 258.13 1062.70 1126.60 113.88 128.82 123.61 19.45 -122.07 1.60 5980447.70 618808.02 N 70.35523983 W 149.0351 1233 .22 15.01 255.19 1155.62 1219.52 137.40 152.34 145.62 13.99 -144.94 1,84 5980441.88 618785.23 N 70.35522492 W 149.03534439 1328. 37 18.54 254.79 1246.71 1310.61 164.85 179.80 171.60 6.87 -171.46 3.71 5980434.34 618758.84 N 70.35520547 W 149.03555971 1423 .60 20.88 257.38 1336.36 1400.26 196.96 211.91 202.64 -0.81 -202.64 2.62 5980426.16 618727.79 N 70.35518448 W 149.03581285 1519 .06 26.12 258.28 1423.87 1487.77 234.99 249.96 240.00 -8.80 -239.84 5.50 5980417.58 618690.72 N 70.35516265 W 149.03611492 1614 .19 27.72 257.62 1508.69 1572.59 278.04 293.02 282.52 -17.80 -281.96 1.71 5980407.92 618648.76 N 70.35513806 W 149.03645690 1709 .33 32.41 256.56 1591.00 1654.90 325.68 340.67 329.62 -28.47 -328.39 4.96 5980396.51 618602.50 N 70.35510889 W 149.03683396 1804 .70 35.60 256.18 1670.06 1733.96 379.01 394.00 382.43 -41.05 -380.22 3.35 5980383.11 618550.88 N 70.35507453 W 149.03725478 1900 .04 38.04 257.51 1746.37 181027 436.13 451.13 439.19 -54.03 -435.85 2.69 5980369.25 618495.47 N 70.35503905 W 149.03770652 1996 .03 40.18 259.82 1820.85 1884.75 496.62 511.68 499.58 -65.90 -495.22 2.70 5980356.44 618436.30 N 70.35500661 W 149.03818854 2091 .73 40.27 260.06 1893.92 1957.82 558.28 573.48 561.33 -76.70 -556.07 0.19 5980344.68 618375.64 N 70.35497711 W 149.03868264 SurveyEditor Ver SP 2.1 Bld( doc40x_100 ) S-125\S-125\S-125P61\S-125P61 Generated 8/21/2007 11:25 AM Page 1 of 4 Measured Vertical Along Hole Comments Inciination Azimuth Sub-Sea ND ND Ciosure NS EW DLS Northing Easting Latitude Lon9itude Depth Section Departure ft de de ft ft tt ft ft it ft de 100 ft ftUS ftUS "LltS/.(i"1 41./t5 'LFiI .tS/ lytib./1 'LU'Ly.Eil ti"L1.Fi"L li:i/.U4 tl"L4.t5i5 -tib.titi -b125.tS4 L.yU SytSU:S:S:i ./;S b125:i1;i.U:S iv iu.:soµa4aua VV 14`J.U:iyl`JL35 2283 .36 45.68 263 .13 2034.31 2098.21 687.98 703.82 691.65 -95.35 -685.05 3.16 5980323 .98 618246.98 N 70.35492612 W 149.03972990 2379 .40 52.50 266 .01 2097.17 2161.07 759.71 776.35 764.11 -102.12 -757.26 7.45 5980316 .07 618174.90 N 70.35490761 W 149.04031620 2475 .06 56.03 267 .42 2153.03 2216.93 836.03 853.98 841.54 -106.55 -834.76 3.88 5980310 .41 618097.47 N 70.35489549 W 149.04094554 2571 .14 55.66 267 .96 2206.97 2270.87 913.94 933.49 920.77 •109.76 -914.21 0.60 5980305 .95 618018.10 N 70.35488671 W 149.04159060 2666 .61 55.86 266 .39 2260.69 2324.59 991.41 1012.41 999.51 -113.65 -993.03 1.38 5980300 .80 617939.35 N 70.35487605 W 149.04223062 2762 .12 58.08 264 .20 2312.76 2376.66 1070.46 1092.48 1079.54 -120.23 -1072.82 3.02 5980292 .95 617859.68 N 70.35485803 W 149.04287849 2857 .36 57.73 264 .21 2363.36 2427.26 1150.35 1173.16 1160.22 -128.38 -1153.09 0.37 5980283 .53 617779.56 N 70.35483574 W 149.04353027 2953 .02 57.12 264 .51 2414.86 2478.76 1230.14 1253.78 1240.82 -136.30 -1233.31 0.69 5980274 .34 617699.48 N 70.35481406 W 149.04418163 3048 .13 56.69 264 .36 2466.80 2530.70 1308.99 1333.46 1320.50 -144.03 -1312.62 0.47 5980265 .36 617620.32 N 70.35479291 W 149.04482554 3143 .94 56.56 263 .92 2519.50 2583.40 138823 1413.46 1400.50 -15220 -1392.21 0.41 5980255 .93 617540.87 N 70.35477056 W 149.045471 9 3239 .40 58.17 263 .48 2570.98 2634.88 1467.92 1493.85 1480.89 -161.02 -1472.11 1.73 5980245. 83 617461.13 N 70.35474641 W 149.0461~ 3334 .98 57.59 263 .53 2621.80 2685.70 1548.21 1574.80 1561.84 -170.18 -1552.54 0.61 5980235. 40 617380.86 N 70.35472135 W 149.04677360 3430 .78 56.83 263 .54 2673.68 2737.58 1628.08 1655.34 1642.37 -179.25 -1632.56 0.79 5980225. 07 617301.00 N 70.35469653 W 149.04742334 3526 .01 57.47 261 .62 2725.34 2789.24 1707.58 1735.34 1722.35 -189.58 -1711.89 1.82 5980213. 47 617221.85 N 70.35466825 W 149.04806741 3621 .59 56.55 261 .46 2777.38 2841.28 1787.39 1815.50 1802.47 -201.38 -1791.18 0.97 5980200. 42 617142.76 N 70.35463598 W 149.04871125 3717 .21 56.18 261 .15 2830.35 2894.25 1866.68 1895.12 1882.02 -213.41 -1869.88 0.47 5980187. 14 61706427 N 70.35460305 W 149.04935021 3813 .17 58.35 261 .98 2882.24 2946.14 1947.04 1975.83 1962.69 -225.24 -1949.72 2.38 5980174. 05 616984.64 N 70.35457067 W 149.04999847 3908. 61 58.39 262 .71 2932.29 2996.19 2027.83 2057.09 2043.94 -236.07 -2030.26 0.65 5980161. 94 616904.29 N 70.35454104 W 149.05065238 4004. 63 58.29 262 .67 2982.69 3046.59 2109.03 2138.82 2125.66 -246.47 -2111.33 0.11 5980150. 26 616823.40 N 70.35451257 W 149.05131058 4100. 36 58.12 262 .60 3033.12 3097.02 2189.88 2220.19 2207.02 -256.90 -2192.02 0.19 5980138. 55 616742.89 N 70.35448401 W 149.05196576 4195. 85 57.93 262 .37 3083.69 3147.59 2270.39 2301.19 2288.01 -267.49 -2272.32 0.29 5980126. 69 616662.77 N 70.35445500 W 149.05261779 4267. 60 57.73 262 .61 3121.89 3185.79 2330.76 2361.92 2348.74 -275.43 -2332.54 0.40 5980117. 79 616602.70 N 70.35443327 W 149.05310667 4330. 93 57.39 264 .46 3155.87 3219.77 2383.76 2415.37 2402.19 -281.45 -2385.64 2.52 5980110. 93 616549.70 N 70.35441678 W 149.05353784 4426. 74 57.14 262 .40 3207.68 3271.58 2463.70 2495.96 2482.77 -290.67 -2465.70 1.83 5980100. 45 616469.81 N 70.35439152 W 149.05418785 4520. 93 58.00 261 .00 3258.19 3322.09 2542.83 2575.46 2562.24 -302.15 -2544.36 1.55 5980087. 72 616391.34 N 70.35436009 W 149.05482653 4616. 97 59.41 261 .52 3308.08 3371.98 2624.57 2657.52 2644.26 -314.61 -2625.47 1.54 5980073. 97 616310.45 N 70.35432595 W 149.05548508 4712. 95 59 .51 261.13 3356.85 3420.75 2706.90 2740.19 2726. 88 -327.08 -2707.19 0.37 5980060. 20 616228.94 N 70 .35429181 W 149.05614856 4808. 75 59 .92 260.39 3405.16 3469.06 2789.36 2822. 91 2809. 54 -340.37 -2788.85 0.79 5980045. 63 616147.52 N 70 .35425543 W 149.056~ 4903 .61 59 .61 260.20 3452.93 3516.83 2871.10 2904. 87 2891. 40 -354.18 -2869.63 0.37 5980030. 53 616066.97 N 70 .35421761 W 149.0574 4999 .36 59 .56 260.69 3501.40 3565.30 2953.44 2987. 44 2973. 90 -367.89 -2951.05 0.44 5980015. 54 615985.78 N 70 .35418008 W 149.05812847 5094. 38 58 .37 261.17 3550.39 3614.29 3034.58 3068. 86 3055. 27 -380.72 -3031.45 1.33 5980001. 42 615905.60 N 70 .35414492 W 149.05878121 5190. 61 58 .06 261.67 3601.08 3664.98 3116.03 3150. 66 3137. 04 -392.93 -3112.34 0.55 5979987. 94 615824.93 N 70 .35411149 W 149.05943789 5286 .44 57 .77 262.17 3651.98 3715.88 3196.$2 3231. 85 3218. 22 -404.34 -3192.72 0.54 5979975. 25 615744.74 N 70 .35408022 W 149.06009055 5382 .77 57 .82 262.72 3703.32 3767.22 3277.84 3313. 36 3299. 73 -415.06 -3273.52 0.49 5979963. 26 615664.13 N 70 .35405085 W 149.06074657 5478 .18 57 .58 261.75 3754.31 3818.21 3358.03 3394. 01 3380. 37 -425.95 -3353.43 0.90 5979951. 10 615584.41 N 70 .35402099 W 149.06139532 5573 .62 58 .42 262.40 3804.88 3868.78 3438.54 3474. 94 3461. 30 -437.11 -3433.59 1.05 5979938. 67 615504.44 N 70 .35399041 W 149.06204616 5669 .33 56 .99 263.71 3856.02 3919.92 3518.85 3555. 84 3542. 20 -446.90 -3513.90 1.89 5979927. 61 615424.31 N 70 .35396356 W 149.06269815 5764. 77 56 .58 262.70 3908.30 3972.20 3598.10 3635. 69 3622. 04 -456.34 -3593.18 0.98 5979916. 90 615345.19 N 70 .35393765 W 149.06334186 5859 .94 56 .69 263.33 3960.64 4024.54 3677.02 3715. 17 3701. 53 -466.01 -3672.08 0.56 5979905. 99 615266.47 N 70 .35391114 W 149.06398239 5955 .90 57 .25 263.48 4012.94 4076.84 3756.83 3795. 62 3781. 97 -475.25 -3751.99 0.60 5979895. 48 615186.71 N 70 .35388579 W 149.06463124 SurveyEditor Ver SP 2.1 Bld( doc40x_100 ) S-125\S-125\S-125PB1\S-125P61 Generated 8/21/2007 11:25 AM Page 2 of 4 . Comments Measured Inciination 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 1iU51 .4ti 5li.l'L "L(i(i."Lli 4Ub5.44 41Ly.:i4 ;S25:i5./5 6147 .71 55 .25 265.32 4119.70 4183.60 3914.13 6242 .81 55 .77 265.46 4173.55 4237.45 3991.50 6338 .46 55 .50 265.16 4227.54 4291.44 4069.45 6434 .04 55 .31 265.09 4281.81 4345.71 4147.17 6529 .26 55 .09 265.t9 4336.15 4400.05 4224.41 6625 .29 56 .29 263.43 4390.28 4454.18 4302.92 6720 .90 56 .84 263.04 4442.96 4506.86 4382.10 6817 .01 56 .71 262.76 4495.62 4559.52 4461.95 6911 .91 56 .72 263.00 4547.70 4611.60 4540.74 7007 .78 56 .82 263.07 4600.24 4664.14 4620.35 7103 .61 56 .87 262.67 4652.65 4716.55 4700.04 7199 .13 56 .82 262.58 4704.89 4768.79 4779.50 7294 .54 57 .96 263.02 4756.31 482021 4859.33 7390 .01 55 .34 262.70 4808.79 4872.69 4938.53 7485 .74 53 .35 261.37 4864.59 4928.49 5015.89 7581 .21 53 .28 260.25 4921.63 4985.53 5092.20 7677 .58 53 .13 259.11 4979.35 5043.25 5169.23 7773 .18 51 .54 263.01 5037.78 5101.68 5244.60 7868 .26 50 .30 264.87 5097.72 5161.62 5317.73 7964 .56 49 .96 263.76 5159.45 5223.35 5390.89 8059 .31 49 .40 263.02 5220.76 5284.66 5462.56 8155 .37 48 .50 262.10 5283.85 5347.75 5534.55 8250 .81 49 .89 262.41 5346.21 5410.11 5606.38 8345 .82 51 .27 264.39 5406.55 5470.45 5679.18 8441 .34 51 .03 263.49 5466.46 5530.36 5752.89 8537 .66 50 .84 262.76 5527.17 5591.07 5827.12 8632 .64 50 .18 261.56 5587.57 5651.47 5900.02 8728 .27 50 .05 260.87 5648.89 5712.79 5973.11 8823 .95 49 .88 260.67 5710.44 5774.34 6046.13 8919 .94 49 .59 257.05 5772.49 5836.39 6119.28 9015 .45 49 .32 251.90 5834,60 5898.50 6191.78 9111 .43 48 .91 247.03 5897.45 5961.35 6263.81 9206 .96 48 .35 242.08 5960.61 6024.51 6333.99 9302 .66 47 .95 238.75 6024.46 6088.36 6402.58 9397 .65 47 .45 234.79 6088.41 6152.31 6468.83 9493 .58 47 .41 233.86 6153.30 6217.20 6534.40 9588 .51 47 .20 231.16 6217.68 6281.58 6598.30 9684 .04 47 .70 228.88 6282.29 6346.19 6661.46 9780 .22 47 .96 223.46 6346.88 6410.78 6723.15 9875 .78 48 .74 217.14 6410.43 6474.33 6780.94 :i25/5.4/ :ii5b1./ti -4Y5'L.4U -:ii5:i1.5"L 3954.97 3941.16 -488.23 -3910.80 4033.35 4019.47 -494.53 -3988.93 4112.31 4098.35 -500.99 -4067.62 4190.99 4176.98 -5~7.68 -4146.01 4269.18 4255.12 -514.30 -4223.92 4348.50 4334.41 -522.17 -4302.84 4428.28 4414.20 -531.57 -4382.08 4508.68 4494.60 -541.51 -4461.86 4588.01 4573.93 -551.34 -4540.58 4668.21 4654.12 -561.07 -4620.18 4748.44 4734.35 -571.02 -4699.79 4828.40 4814.32 -581.29 -4779.09 4908.77 4894.68 -591.36 -4858.83 4988.51 4974.42 -601.27 -4937.95 5066.29 5052.19 -612.03 -5014.98 5142.85 5128.69 -624.26 -5090.56 5220.02 5205.73 -638.09 -5166.48 5295.69 5281.34 -649.87 -5241.20 5369.49 5355.13 -657.67 -5314.59 5443.40 5429.01 -664.99 -5388.13 5515.64 5501.25 -673.30 -5459.89 5588.08 5573.69 -682.68 -5531.73 5660.32 5645.93 -692.41 -5603.31 5733.71 5719.31 -700.84 -5676.21 5808.10 5793.69 -708.69 -5750.18 5882.89 5868.47 -717.64 -5824.43 5956.19 5941.76 -727.63 -5897.04 6029.57 6015.11 -738.84 -5969.56 6102.82 6088.31 -750.59 -6041.87 6176.06 6161.36 -764.73 -6113.72 6248.62 6233.12 -784.14 -6183.60 6321.16 6303.72 -809.57 -625i .52 6392.83 6371.88 -840.34 -6316.23 6464.11 6438.01 -875.52 -637820 6534.35 6501.52 -914.00 -6436.96 6605.00 656422 -955.20 -6494.34 6674.77 6625.24 -997.66 -6549.70 6745.14 6685.45 -1042.87 -6603.61 6816.40 6744.03 -1092.21 -6655.00 6887.77 6798.51 -1146.63 -6701.12 'L./U 5yiauai.ui b151U/.3L N/U.35325bb15 VV 14y.Vt~SL/bi5/ 1.21 5979879.98 615028.15 N 70.35385010 W 149.06592056 0.56 5979872.44 614950.14 N 70.35383278 W 149.06655490 0.38 5979864.74 614871.57 N 70.35381503 W 149.06719378 0.21 5979856.81 614793.29 N 70.35379664 W 149.06783027 0.25 5979848.95 614715.51 N 70.35377843 W 149.06846280 1.96 5979839.83 614636.73 N 70.35375680 W 149.06910357 0.67 5979829.17 614557.66 N 70.35373099 W 149.06974682 0.28 5979817.97 614478.05 N 70.35370372 W 149.07039455 0.21 5979806.89 614399.51 N 70.35367673 W 149.07103365 0.12 5979795.90 614320.08 N 70.35365003 W 149.0716~ 0.35 5979784.68 614240.64 N 70.35362269 W 149.0723 0.09 5979773.16 614161.52 N 70.35359451 W 149.07297007 1.26 5979761.83 614081.96 N 70.35356685 W 149.07361740 2.76 5979750.66 614003.01 N 70.35353964 W 149.07425977 2.37 5979738.68 613926.17 N 70.35351009 W 149.07488513 0.94 5979725.25 613850.80 N 70.35347655 W 149.07549868 0.96 5979710.23 613775.12 N 70.35343864 W 149.07611502 3.63 5979697.26 613700.59 N 70.35340631 W 149.07672166 2.00 5979688.30 613627.35 N 70.35338486 W 149.07731745 0.95 5979679.81 613553.93 N 70.35336472 W 149.07791453 0.84 5979670.36 613482.32 N 70.35334186 W 149.07849712 1.18 5979659.85 613410.65 N 70.35331610 W 149.07908027 1.48 5979648.98 613339.24 N 70.35328937 W 149.07966138 2.17 5979639.40 613266.49 N 70.35326621 W 149.08025325 0.78 5979630.37 613192.66 N 70.35324460 W 149.08085379 0.62 5979620.25 613118.57 N 70.35321999 W 149.08145656 1.20 5979609.10 613046.13 N 70.35319253 W 149.08204603 0.57 5979596.75 612973.80 N 70.35316176 W 149.082~ 0.24 5979583.85 612901.70 N 70.35312950 W 149.0832 2.89 5979568.57 612830.09 N 70.35309071 W 149.08380498 4.11 5979548.06 612760.52 N 70.35303753 W 149.08437227 3.86 5979521.55 612693.03 N 70.35296790 W 149.08492352 3.93 5979489.76 612628.82 N 70.35288369 W 149.08544864 2.63 5979453.61 612567.42 N 70.35278744 W 149.08595161 3.13 5979414.20 612509.29 N 70.35268218 W 149.08642834 0.72 5979372.10 612452.56 N 70.35256949 W 149.08689398 2.10 5979328.78 612397.90 N 70.35245338 W 149.08734308 1.83 5979282.71 612344.71 N 70.35232972 W 149.08778049 4.18 5979232.57 612294.12 N 70.35219481 W 149.08819730 5.01 5979177.43 612248.87 N 70.35204603 W 149.08857134 SurveyEditor Ver SP 2.1 Bld( doc40x_100 ) S-125\S-125\S-125PB1\S-125PB1 Generated 8/21/2007 11:25 AM Page 3 of 4 C 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 9970 .78 51 .82 212.07 6471.15 6535.05 6835.52 6960.81 6849.67 -1206. 77 -6742.53 523 5979116.64 612208.43 N 70.35188162 W 149.08890709 10066 .29 51 .42 209.19 6530.46 6594.36 6887.96 7035.68 6898.80 -1271. 18 -6780.67 2.40 5979051.64 612171.32 N 70.35170557 W 149.08921629 10161 .91 52 .76 207.47 6589.21 6653.11 6938.58 7111.12 6946.46 -1337. 59 -6816.46 1.99 5978984.68 612136.59 N 70.35152406 W 149.08950635 10257 .51 55 .83 207.22 6645.00 6708.90 6989.68 7188.74 6994.98 -1406. 53 -6852.11 3.22 5978915.18 612102.04 N 70.35133561 W 149.08979528 10352 .98 59 .39 206.67 6696.13 6760.03 7042.32 7269.34 7045.48 -1478. 39 -6888.63 3.76 5978842.76 612066.67 N 70.35113921 W 149.09009120 10448.66 61.18 206.03 6743.56 6807.46 7095.93 7352.44 7097.46 -1552.85 -6925.51 1.96 5978767.73 10544.35 62.11 206.23 6789.00 6852.90 7150.01 7436.64 7150.49 -1628.46 -6962.59 0.99 5978691.56 10640.02 61.73 205.95 6834.03 6897.93 7204.1$ 7521.05 7204.20 -1704.26 -6999.71 0.47 5978615.18 Last MWD+IFR+MS 10667.32 61.62 205.86 6846.99 6910.89 7219.54 7545.08 7219.54 -1725.88 -701021 0.50 5978593.40 TD ( Projected ) 10743.00 61.62 205.86 6882.96 6946.86 7262.06 7611.67 7262.24 -1785.80 -7039.26 0.00 5978533.03 Survey Type: Definitive Survey NOTES: GYD GC MS -( Gyrodata - cont. drillpipe m/s -- Gyrodata p ump-down multishot surveys with continuous tool (RGS-CT) in drill-pi pe. MWD + IFR + MS -( In-field referenced MWD with mult-stat ion analysis and correction applied in post-processing. Assumes a BHA sag correction is applied to enhance inclination accuracy. ) Leqal Description: Northing (Y) [ftUS] Easting (X) [ftUS] Surface : 4226 FSl 4502 FEL S35 T12N R12E UM 5980430.19 618930.37 BHL : 2437 FSL 984 FEL S33 T12N R12E UM 5978533.03 611920.95 612030.98 N 70.35093570 W 149.09039003 611995.10 N 70.35072907 W 149.09069053 611959.19 N 70.35052187 W 149.09099132 611949.04 N 70.35046279 W 149.09107638 611920.95 N 70.35029903 W 149.09131169 r 1 L J ~ SurveyEditor Ver SP 2.1 Bid( doc40x_100 ) S-125\S-125\S-125PB1\S-125P61 Generated 8/21/2007 11:25 AM Page 4 of 4 < ~~ A i w~ A w ~- i ~~ ~urvey rtepvrt - Report Date: 14•Jul•~7 Survey I DLS Computation Method: Minimum Curvature / Lubinski Client: BP Exploration Alaska Vertical Section Azimuth: 191.970° Field: Prudhoe Bay Unit • WOA Vertical Section Origin: N 0.000 ft, E 0.000 it Structure / Slot: S-PAD / S•125 ND Reference Datum: Rotary Table Well: S-125 ND Reference Elevation: 63.90 ft reldtive to MSL Borehole: S-125 Sea Bed / Ground Levei Elevation: 35.40 ft relative to MSL UWVAPI#: 500292336100 Magnetic Declination: 23.553° Survey Name / Date: S-125 / July 14, 2007 Total Field Strength: 57641.339 nT Tort / AHD / DDI / ERD retio: 267.179° / 8512.60 ft / 6.586 / 1.242 Magnetic Dip: 80.910° Grid Coordinate System: NAD27 Alaska State Planes, Zone 04, US Feet Declination Date: July 13, 2007 Location LaULong: N 70.35518670, W 149.03416747 Magnetic Declination Model: BGGM 2007 Location Grid NIE Y/X: N 5980430.190 ftUS, E 618930.370 ftUS North Reference: True NoRh Grid Convergence Angle: +0.90962581 ° Total Corr Mag North -> True North: +23.553° Grid Scale Factor: 0.99991607 Local Coordinates Referenced To: Well Head s Comments Measured Inclination Azimuth Sub-Sea ND TVD Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude ~epth Section Departure ft de de ft ft ft ft ft it tt de 100 ft flUS ftUS Filt u.UU u.~~ u.~v -b3.y~ u.~~ u.w ~.vu v.uu uuu u.uu u.~~ oaav4au. i~ oia~o~.oi rv i~.ooaiooi~ vv 14.7.UJ410/4/ GYD CT DMS 100.00 0.42 276.75 36.10 100.00 0.03 0.37 0,37 0.04 -0.36 0.42 5980430. 23 618930.01 N 70.35518682 W 149.03417042 200.00 0.30 290.83 136.10 200.00 0.03 0.99 0.99 0.18 -0.97 0.15 5980430. 35 618929.39 N 70.35518719 W 149.03417536 300.00 2.21 303.33 236.07 299.97 -0.72 3.18 3.13 1.33 -2.83 1.92 5980431. 48 618927.52 N 70.35519034 W 149.03419043 400.00 3.81 303.08 335.93 399.83 -2.62 8.43 8.36 4.20 -7.22 1.60 5980434. 28 618923.08 N 70.35519819 W 149.03422612 500.00 6.37 300.85 435.52 499.42 -5.61 17.30 17.23 8.86 -14.77 2.57 5980438. 82 618915.46 N 70.35521092 W 149.03428741 600.00 8.79 302.13 534.64 598.54 -10.04 30.49 30.42 15.77 -26.01 2.43 5980445. 55 618904.12 N 70.35522979 W 149.03437863 700.00 9.11 288.49 633.44 697.34 -13.57 45.97 45.81 22.35 -39.99 2.14 5980451. 90 618890.04 N 70.35524775 W 149.03449215 800.00 8.77 274.30 732.23 796.13 -13.45 61.44 60.68 25.43 -55.10 223 5980454 .74 618874.88 N 70.35525617 W 149.03461485 900.00 10.62 266.72 830.81 894.71 -10.01 78.25 76.28 25.48 -71.90 2.24 5980454. 52 618858.08 N 70.35525630 W 149.03475130 MWD+IFR+MS 945.91 11.64 264.61 875.85 939.75 -7.51 87.11 84.46 24.80 -80.74 2.39 5980453. 70 61884926 N 70.35525445 W 149.0348 1041.92 12.66 264.08 969.71 1033.61 -1.39 107.32 103.39 22.80 -100.84 1.07 5980451. 39 618829.19 ~ N 70.35524899 W 149.034 1137.36 13.40 258.13 1062.70 1126.60 6.29 128.82 123.61 19.45 -122.07 1.60 5980447. 70 618808.02 N 70.35523983 W 149.03515 1233.22 15.01 255.19 1155.62 1219.52 16.37 152.34 145.62 13.99 -144.94 1.84 5980441. 88 618785.23 N 70.35522492 W 149.03534439 1328.37 18.54 254.79 1246.71 1310.61 28.84 179.80 171.60 6.87 -171.46 3.71 5980434. 34 618758.84 N 70.35520547 W 149.03555971 1423.60 20.88 257.38 1336.36 1400.26 42.82 211.91 202.64 -0.81 -202.64 2.62 5980426. 16 618727.79 N 70.35518448 W 149.03581285 1519.06 26.12 258.28 1423.87 1487.77 58.35 249.96 240.00 -8.80 -239.84 5.50 5980417. 58 618690.72 N 70.35516265 W 149.03611492 1614.19 27.72 257.62 1508.69 1572.59 75.89 293.02 282.52 -17.80 -281.96 1.71 5980407. 92 618648.76 N 70.35513806 W 149.03645690 1709.33 32.41 256.56 1591.00 1654.90 95.96 340.67 329.62 -2$.47 -328.39 4.96 5980396 .51 618602.50 N 70.35510889 W 149.03683396 1804.70 35.60 256.18 1670.06 1733.96 119.01 394.00 382.43 -41.05 -380.22 3.35 5980383. 11 618550.88 N 70.35507453 W 149.03725478 1900.04 38.04 257.51 1746.37 1810.27 143.25 451.13 439.19 -54.03 -435.85 2.69 5980369. 25 618495.47 N 70.35503905 W 149.03770652 1996.03 40.18 259.82 1820.85 1884.75 167.18 511.68 499.58 -65.90 -495.22 2.70 5980356. 44 618436.30 N 70.35500661 W 149.03818854 2091.73 40.27 260.06 1893.92 1957.82 190.36 573.48 56t.33 -76.70 -556.07 0.19 5980344. 68 618375.64 N 70.35497711 W 149.03868264 SurveyEditor Ver SP 2.1 Bld( doc40x_100 ) S-125\S-125\S-125\S-125 Generated 8/21/2007 11:25 AM Page 1 of 5 Comments Measured ~nclination Azimuth Sub-Sea ND TVD Vertical Along Hole ~losure NS EW DLS Northing Easting Latitude Longitude Depth Section Departure ft de de ft ft ft ft tt ft ft de 100 ft ftUS ftUS "LltS/.b1 4L./t5 LO1 .25/ lyb5./1 LULy.til Ll:i.1L bJ/.U4 bL4.t525 -t5b.bb -bI23.tl4 L.yU 5`JtSV.533./3 OI23JIJ.VJ IV /U.3J4y470~ VV 14y.UJylyL3~ 2283.36 45.68 263 .13 2034.31 2098.21 235.36 703.82 691.65 -95.35 -685.05 3.16 5980323.98 618246.98 N 70.35492612 W 149.03972990 2379.40 52.50 266 .01 2097.17 2161.07 256.96 776.35 764.11 -102.12 -757.26 7.45 5980316.07 618174.90 N 70.35490761 W 149.04031620 2475.06 56.03 267 .42 2153.03 2216.93 277.36 853.98 841.54 -106.55 -834.76 3.88 5980310.41 618097.47 N 70.35489549 W 149.04094554 2571.14 55.66 267 .96 2206.97 2270.87 296.97 933.49 920.77 -109.76 -914.21 0.60 5980305.95 618018.10 N 70.35488671 W 149.04159060 2666.61 55.86 266 .39 2260.69 2324.59 317.13 1012.41 999.51 -113.65 -993.03 1.38 5980300.80 617939.35 N 70.35487605 W 149.04223062 2762.12 58.08 264 .20 2312.76 2376.66 340.12 1092.48 1079.54 -120.23 -1072.82 3.02 5980292.95 617859.68 N 70.35485803 W 149.04287849 2857.36 57.73 264 .21 2363.36 2427.26 364.74 1173.16 1160.22 -128.38 -1153.09 0.37 5980283.53 617779.56 N 70.35483574 W 149.04353027 2953.02 57.12 264 .51 2414.86 2478.76 389.13 1253.78 1240.82 -136.30 -1233.31 0.69 5980274.34 617699.48 N 70.35481406 W 149.04418163 3048.13 56.69 264 .36 2466.80 2530.70 413.13 1333.46 1320.50 -144.03 -1312.62 0.47 5980265.36 617620.32 N 70.35479291 W 149.04482554 3143.94 56.56 263 .92 2519.50 2583.40 437.63 1413.46 1400.50 -152.20 -1392.21 0.41 5980255.93 617540.87 N 70.35477056 W 149.04547179 3239.40 58.17 263 .48 2570.98 2634.88 462.83 1493.85 1480.89 -161.02 -1472.11 1.73 5980245.83 617461.13 N 70.35474641 W 149.0461~ 3334.98 57.59 263 .53 2621.80 2685.70 488.47 1574.80 1561.84 -170.18 -1552.54 0.61 5980235.40 617380.86 N 70.35472135 W 149.04677360 3430.78 56.83 263 .54 2673.68 2737.58 513.94 1655.34 1642.37 -179.25 -1632.56 0.79 5980225.07 617301.00 N 70.35469653 W 149.04742334 3526.01 57.47 261 .62 2725.34 2789.24 540.50 1735.34 1722.35 -189.58 -1711.89 1.82 5980213.47 617221.85 N 70.35466825 W 149.04806741 3621.59 56.55 261 .46 2777.38 2841.28 568.49 1815.50 1802.47 -201.38 -1791.18 0.97 5980200.42 617142.76 N 70.35463598 W 149.04871125 3717.21 56.18 261 .15 2830.35 2894.25 596.58 1895.12 1882.02 -213.41 -1869.88 0.47 5980187.14 617064.27 N 70.35460305 W 149.04935021 3813.17 58.35 261 .98 2882.24 2946.14 624.72 1975.83 1962.69 -225.24 -1949.72 2.38 5980174.05 616984.64 N 70.35457067 W 149.04999847 3908.61 58.39 262 .71 2932.29 2996.19 652.01 2057.09 2043.94 -236.07 -2030.26 0.65 5980161.94 616904.29 N 70.35454104 W 149.05065238 4004.63 58.29 262 .67 2982.69 3046.59 678.99 2138.82 2125.66 -246.47 -2111.33 0.11 5980150.26 616823.40 N 70.35451257 W 149.05131058 4100.36 58.12 262 .60 3033.12 3097.02 705.93 2220.19 2207.02 -256.90 -2192.02 0.19 5980138.55 616742.89 N 70.35448401 W 149.05196576 4195.85 57.93 262 .37 3083.69 3147.59 732.95 2301.19 2288.01 -267.49 -2272.32 0.29 5980126.69 616662.77 N 70.35445500 W 149.05261779 4267.60 57.73 262 .61 3121.89 3185.79 753.21 2361.92 2348.74 -275.43 -2332.54 0.40 5980117.79 616602.70 N 70.35443327 W 149.05310667 4330.93 57.39 264 .46 3155.87 3219.77 770.11 2415.37 2402.19 -281.45 -2385.64 2.52 5980110.93 616549.70 N 70.35441678 W 149.05353784 4426.74 57.14 262 .40 3207.68 3271.58 795.73 2495.96 2482.77 -290.67 -2465.70 1.83 5980100.45 616469.81 N 70.35439152 W 149.05418785 4520.93 58.00 261 .00 3258.19 3322.09 823.28 2575.46 2562.24 -302.15 -2544.36 1.55 5980087.72 616391.34 N 70.35436009 W 149.05482653 4616.97 59.41 261 .52 3308.08 3371.98 852.29 2657.52 2644.26 -314.61 -2625.47 1.54 5980073.97 616310.45 N 70.35432595 W 149.05548508 4712.95 59.51 261 .13 3356.85 3420.75 881.44 2740.19 2726.88 -327.08 -2707.19 0.37 5980060.20 616228.94 N 70.35429181 W 149.05614856 4808.75 59.92 260 .39 3405.16 3469.06 911.37 2822.91 2809.54 -340.37 -2788.85 0.79 5980045.63 616147.52 N 70.35425543 W 149.056 4903.61 59.61 260 .20 3452.93 3516.83 941.64 29Q4.87 2891.40 -354.18 -2869.63 0.37 5980030.53 616066.97 N 70.35421761 W 149.0574 4999.36 59.56 260 .69 3501.40 3565.30 971.94 2987.44 2973.90 -367.89 -2951.05 0.44 5980015.54 615985.78 N 70.35418008 W 149.05812847 5094.38 58.37 261 .17 3550.39 3614.29 1001.17 3068.86 3055.27 -380.72 -3031.45 1.33 5980001.42 615905.60 N 70.35414492 W 149.05878121 5190.61 58.06 261 .67 3601.08 3664.98 1029.88 3150.66 3137.04 -392.93 -3112.34 0.55 5979987.94 615824.93 N 70.35411149 W 149.05943789 5286.44 57.77 262 .17 3651.98 3715.88 1057.72 3231.85 3218.22 -404.34 -3192.72 0.54 5979975.25 615744.74 N 70.35408022 W 149.06009055 5382.77 57.82 262 .72 3703.32 3767.22 1084.96 3313.36 3299.73 -415.06 -3273.52 0.49 5979963.26 615664.13 N 70.35405085 W 149.06074657 5478.18 57.58 261 .75 3754.31 3818.21 1112.19 3394.01 3380.37 -425.95 -3353.43 0.90 5979951.10 615584.41 N 70.35402099 W 149.06139532 5573.62 58.42 262 .40 3804.88 3868.78 1139.73 3474.94 3461.30 -437.11 -3433.59 1.05 5979938.67 615504.44 N 70.35399041 W 149.06204616 5669.33 56.99 263 .71 3856.02 3919.92 1165.96 3555.84 3542.20 -446.90 -3513.90 1.89 5979927.61 615424.31 N 70.35396356 W 149.06269815 5764.77 56.58 262 .70 3908.30 3972.20 1191.65 3635.69 3622.04 -456.34 -3593.18 0.98 5979916.90 615345.19 N 70.35393765 W 149.06334186 5859.94 56.69 263 .33 3960.64 4024.54 1217.46 3715.17 3701.53 -466.01 -3672.08 0.56 5979905.99 615266.47 N 70.35391114 W 149.06398239 5955.90 57.25 263 .48 4012.94 4076.84 1243.08 3795.62 3781.97 -475.25 -3751.99 0.60 5979895.48 615186.71 N 70.35388579 W 149.06463124 SurveyEditor Ver SP 2.1 Bld( doc40x_100 ) S-125\S-125\S-125\S-125 Generated 8/21/2007 11:25 AM Page 2 of 5 ~ Comments Measured ~nclination Azimuth SuGSea TVD ND Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depih Section Departure ft de de ft ft ft ft ft ft tt de /100 tt ftUS ftUS 6Ub1.46 b6.1Z "L66.'L6 4U6b.44 41Ly.34 1Z66.b/ 6147.71 55.25 265.32 4119.70 4183.60 1288.72 6242.81 55.77 265.46 4173.55 4237.45 1311.08 6338.46 55.50 265.16 4227.54 4291.44 1333.72 6434.04 55.31 265.09 4281.81 4345.71 1356.52 6529.26 55.09 265.19 4336.15 4400.05 1379.16 6625.29 56.29 263.43 4390.28 4454.18 1403.23 6720.90 56.84 263.04 4442.96 4506.86 1428.85 6817.01 56.71 262.76 4495.62 4559.52 1455.12 6911.91 56.72 263.00 4547.70 4611.60 1481.07 7007.78 56.82 263.07 4600.24 4664.14 1507.09 7103.61 56.87 262.67 4652.65 4716.55 1533.34 7199.13 56.82 262.58 4704.89 4768.79 1559.83 7294.54 57.96 263.02 4756.31 4820.21 1586.22 7390.01 55.34 262.70 4808.79 4872.69 1612.32 7485.74 53.35 261.37 4864.59 4928.49 1638.83 7581.21 53.28 260.25 4921.63 4985.53 1666.47 7677.58 53.13 259.11 4979.35 5043.25 1695.74 7773.18 51.54 263.01 5037.78 5101.68 1722.76 7868.26 50.30 264.87 5097.72 5161.62 1745.61 7964.56 49.96 263.76 5159.45 5223.35 1768.03 8059.31 49.40 263.02 5220.76 5284.66 1791.04 8155.37 48.50 262.10 5283.85 5347.75 1815.11 8250.81 49.89 262.41 5346.21 5410.11 1839.48 8345.82 51.27 264.39 5406.55 5470.45 1862.84 8441.34 51.03 263.49 5466.46 5530.36 1885.86 8537.66 50.84 262.76 5527.17 5591.07 1910.02 8632.64 50.18 261.56 5587.57 5651.47 1934.86 872827 50.05 260.87 5648.89 5712.79 1960.86 8823.95 49.88 260.67 5710.44 5774.34 1987.35 8919.94 49.59 257.05 5772.49 5836.39 2016.09 9015.45 49.32 251.90 5834.60 5898.50 2049.57 9111.43 48.91 247.03 5897.45 5961.35 2088.53 9206.96 48.35 242.08 5960.61 6024.51 2132.05 9302.66 47.95 238.75 6024.46 6088.36 2179.32 9397.65 47.45 234.79 6088.41 6152.31 2229.15 9493.58 47.41 233.86 6153.30 6217.20 2281.36 9588.51 47.20 231.16 6217.68 6281.58 2334.37 9684.04 47.70 228.88 6282.29 6346.19 2389.78 9780.22 47.96 223.46 6346.88 6410.78 2448.70 9875.78 48.74 217.14 6410.43 6474.33 2511.50 :iti/S.4/ :it5b1./b -4tSL.4U -:ii3:i1.5C 3954.97 3941.16 -488.23 -3910.80 4033.35 4019.47 -494.53 -3988.93 4112.31 4098.35 -500.99 -4067.62 4190.99 4176.98 -507.68 -4146.01 4269.18 4255.12 -514.30 -4223.92 4348.50 4334.41 -522.17 -4302.84 4428.28 4414.20 -531.57 -4382.08 4508.68 4494.60 -541.51 -4461.86 4588.01 4573.93 -551.34 -4540.58 4668.21 4654.12 -561.07 -4620.18 4748.44 4734.35 -571.02 -4699.79 4828.40 4814.32 -581.29 -4779.09 4908.77 4894.68 -591.36 -4858.83 4988.51 4974.42 -601.27 -4937.95 5066.29 5052.19 -612.03 -5014.98 5142.85 5128.69 -624.26 -5090.56 5220.02 5205.73 -638.09 -5166.48 5295.69 5281.34 -649.87 -5241.20 5369.49 5355.13 -657.67 -5314.59 5443.40 5429.01 -664.99 -5388.13 5515.64 5501.25 -673.30 -5459.89 5588.08 5573.69 -682.68 -5531.73 5660.32 5645.93 -692.41 -5603.31 5733.71 5719.31 -700.84 -5676.21 5808.10 5793.69 -708.69 -5750.18 5882.89 5868.47 -717.64 -5824.43 5956.19 5941.76 -727.63 -5897.04 6029.57 6015.11 -738.84 -5969.56 6102.82 6088.31 -750.59 -6041.87 6176.06 6161.36 -764.73 -6113.72 6248.62 6233.12 -784.14 -6183.60 6321.16 6303.72 -809.57 -6251.52 6392.83 6371.88 -840.34 -6316.23 6464.11 6438.01 -875.52 -6378.20 6534.35 6501.52 -914.00 -6436.96 6605.00 6564.22 -955.20 -6494.34 6674.77 6625.24 -997.66 -6549.70 6745.14 6685.45 -1042.87 -6603.61 6816.40 6744.03 -1092.21 -6655.00 6887.77 6798.51 -1146.63 -6701.12 L./U Sy/yi5i5/.U/ b151V/..iL IV /V.35:723bb15 VV 14y.Ub5L/bt5/ 1.21 5979879 .98 615028.15 N 70.35385010 W 149.06592056 0.56 5979872 .44 614950.14 N 70.35383278 W 149.06655490 0.38 5979864 .74 614871.57 N 70.35381503 W 149.06719378 0.21 5979856 .81 614793.29 N 70.35379664 W 149.06783027 0.25 5979848 .95 614715.51 N 70.35377843 W 149.06846280 1.96 5979839 .83 614636.73 N 70.35375680 W 149.06910357 0.67 5979829 .17 614557.66 N 70.35373099 W 149.06974682 0.28 5979817 .97 614478.05 N 70.35370372 W 149.07039455 0.21 5979806 .89 614399.51 N 70.35367673 W 149.07103365 0.12 5979795 .90 614320.08 N 70.35365003 W 149.07167991 ~ 0.35 5979784 .68 614240.64 N 70.35362269 W 149.0723 0.09 5979773 .16 614161.52 N 70.35359451 W 149.07297007 1.26 5979761 .83 614081.96 N 70.35356685 W 149.07361740 2.76 5979750 .66 614003.01 N 70.35353964 W 149.07425977 2.37 5979738 .68 613926.17 N 70.35351009 W 149.07488513 0.94 5979725 25 613850.80 N 70.35347655 W 149.07549868 0.96 5979710 .23 613775.12 N 70.35343864 W 149.07611502 3.63 5979697 .26 613700.59 N 70.35340631 W 149.07672166 2.00 5979688 .30 613627.35 N 70.35338486 W 149.07731745 0.95 5979679 .81 613553.93 N 70.35336472 W 149.07791453 0.84 5979670 .36 613482.32 N 70.35334186 W 149.07849712 1.18 5979659 .85 613410.65 N 70.35331610 W 149.07908027 1.48 5979648 .98 613339.24 N 70.35328937 W 149.07966138 2.17 5979639 .40 613266.49 N 70.35326621 W 149.08025325 0.78 5979630 .37 613192.66 N 70.35324460 W 149.08085379 0.62 5979620 .25 613118.57 N 70.35321999 W 149.08145656 1.20 5979609 .10 613046.13 N 70.35319253 W 149.08204603 0.57 5979596 .75 612973.80 N 70.35316176 W 149.082~ 0.24 5979583 .85 612901.70 N 70.35312950 W 149.0832 2.89 5979568 .57 612830.09 N 70.35309071 W 149.08380498 4.11 5979548 .06 612760.52 N 70.35303753 W 149.08437227 3.86 5979521 .55 612693.03 N 70.35296790 W 149.08492352 3.93 5979489 .76 612628.82 N 70.35288369 W 149.08544864 2.63 5979453 .61 612567.42 N 70.35278744 W 149.08595161 3.13 5979414 .20 612509.29 N 70.35268218 W 149.08642834 0.72 5979372 .10 612452.56 N 70.35256949 W 149.08689398 2.10 5979328 .78 612397.90 N 70.35245338 W 149.08734308 1.83 5979282 .71 612344.71 N 70.35232972 W 149.08778049 4.18 5979232 .57 612294.12 N 70.35219481 W 149.08819730 5.01 5979177 .43 612248.87 N 70.35204603 W 149.08857134 SurveyEditor Ver SP 2.1 Bld( doc40x_100 ) S-125\S-125\S-125\S-125 Generated 8/21/2007 11:25 AM Page 3 of 5 C Comments Measured Inclination Azimuth Sub-Sea TVD ND Vertical Along Hole Closure NS EW DLS Northing Easting Latitude Longitude Depih Section Departure ft de de ft ft ft ft ft ft ft de t00ft ftUS ftUS 9970.78 51.82 212.07 6471.15 6535.05 2578.93 10066 .29 51.42 209.19 6530.46 6594.36 2649.85 10161 .91 52.76 207.47 6589.21 6653.11 2722.23 10257 .51 55.83 207.22 6645.00 6708.90 2797.08 Tie-In Survey 10352 .98 59.39 206.67 6696.13 6760.03 2874.94 Top Window 10358 .00 59.41 206.66 6698.68 6762.58 2879.12 (Inc+Trend) Base Window 10371 .00 61.43 206.09 6705.10 6769.00 2890.07 10401 .87 60.07 205.77 6720.19 6784.09 2916.21 10434 .63 60.35 205.44 6736.46 6800.36 2943.84 10467 .42 62.68 205.13 6752.10 6816.00 2971.88 10497 .27 68.05 204.86 6764.54 6828.44 2998.31 10530 .33 73.68 204.57 6775.37 6839.27 3028.76 10562 .58 79.09 204.30 6782.96 6846.86 3059.36 10594 .22 85.33 204.03 6787.24 6851.14 3089.98 10627 .86 91.57 205.09 6788.15 6852.05 3122.78 MWD+IFR+MS 10660 .26 97.75 206.12 6785.52 6849.42 3154.15 10691 .23 99.92 202.48 6780.76 6844.66 3184.04 10723 .97 99.47 198.10 6775.25 6839.15 3215.96 10756 .79 98.60 194.15 6770.09 6833.99 3248.29 10788 .09 99.05 193.52 6765.29 6829.19 3279.20 10819 .25 99.23 193.89 6760.34 6824.24 3309.95 10852 .06 97.97 192.19 6755.43 6819.33 3342.38 10883 .23 96.59 188.72 6751.48 6815.38 337328 10913 .96 97.15 187.41 6747.81 6811.71 3403.72 10946 .71 97.32 186.69 6743.68 6807.58 3436.09 10977 .36 97.15 186.94 6739.82 6803.72 3466.37 11009 .77 97.39 187.18 6735.72 6799.62 3498.41 11041 .66 97.42 186.92 6731.61 6795.51 3529.91 11072 .51 97.56 186.85 6727.59 6791.49 3560.38 11104 .78 97.60 187.75 6723.33 6787.23 3592.26 11137 .50 98.11 187.85 6718.86 6782.76 3624.59 11168 .73 93.20 186.77 6715.79 6779.69 3655.55 11201 .24 93.24 187.10 6713.96 6777.86 3687.89 11232 .53 93.94 187.55 6712.00 6775.90 3719.01 11264 .75 92.73 186.63 6710.13 6774.03 3751.06 11295 .90 92.63 185.38 6708.67 6772.57 3782.01 11328 .07 93.12 185.16 6707.06 6770.96 3813.92 11359 .71 93.32 184.58 6705.28 6769.18 3845.26 11391 .87 93.60 184.83 6703.34 6767.24 3877.11 11423 .59 93.15 184.90 6701.47 6765.37 3908.53 6960.81 6849.67 -1206.77 -6742.53 7035.68 6898.80 -1271.18 -6780.67 7111.12 6946.46 -1337.59 -6816.46 7188.74 6994.98 -1406.53 -6852.11 7269.34 7045.48 -1478.39 -6888.63 5.23 5979116.64 612208. 43 N 70.35188162 W 149.08890709 2.40 5979051.64 612171. 32 N 70.35170557 W 149.08921629 1.99 5978984.68 612136. 59 N 70.35152406 W 149.08950635 3.22 5978915.18 612102. 04 N 70.35133561 W 149.08979528 3.76 5978842.76 612066. 67 N 70.35113921 W 149.09009120 7273.66 7048.19 -1482.25 -6890.57 7284.97 7055.24 7311.90 7071.90 7340.33 7089.44 7369.15 7107.16 7396.27 7123.79 7427.49 7142.90 7458.83 7162.04 7490.16 7181.14 7523.77 7201.92 7556.05 7222.42 7586.65 7241.39 7618.92 7259.67 7651.33 7276.15 7682.26 7290.90 7713.02 7305.61 7745.46 7320.90 7776.38 7334.33 7806.89 7346.54 7839.38 7359.13 7869.79 7370.91 7901.94 7383.60 7933.56 7396.20 7964.15 7408.41 7996.14 7421.51 8028.55 7435.15 8059.62 7448.09 8092.Q8 7461.54 8123.30 7474.78 8155.47 7488.41 8186.59 7501.16 8218.71 7514.07 8250.30 7526.68 8282.41 7539.51 8314.07 7552.37 -1492.38 -1516.60 -1542.24 -1568.30 -1592.88 -1621.24 -1649.77 -1678.36 -1708.93 -1738.03 -1765.92 -1796.18 -1827.31 -1857.34 -188723 -1918.83 -1949.24 -1979.44 -2011.69 -2041.88 -2073.78 -2105.17 -2135.53 -2167.26 -2199.37 -2230.19 -2262.41 -2293.39 -2325.30 -2356.25 -2388.24 -2419.72 -2451.71 -2483.26 -6895.59 -6907.37 -6919.65 -6931.96 -6943.42 -6956.47 -6969.43 -6982.26 -6996.23 -7010.18 -7022.77 -7033.96 -7042.96 -7050.35 -7057.64 -7064.96 -7070.57 -7074.85 -7078.84 -7082.44 -7086.40 -7090.28 -7093.94 -7098.01 -7102.41 -7106.36 -7110.28 -711426 -7118.23 -7121.49 -7124.44 -7127.12 -7129.75 -7132.44 0.43 5978838.87 612064.79 N 70.35112866 W 149.09010692 16.00 5978828.66 612059. 93 N 70.35110098 W 149.09014761 4.50 5978804.26 612048. 54 N 70.35103478 W 149.09024304 1.22 5978778.43 612036. 66 N 70.35096470 W 149.09034259 7.15 5978752.19 612024. 77 N 70.35089349 W 149.090442 2 18.01 5978727.43 612013. 71 N 70.35082630 W 149.0905 17.05 5978698.86 612001. 11 N 70.35074878 W 149.09064091 16.79 5978670.14 611988. 60 N 70.35067082 W 149.09074591 19.74 5978641.35 611976. 23 N 70.35059269 W 149.09084981 18.81 5978610.57 611962. 75 N 70.35050914 W 149.09096299 19.34 5978581.24 611949. 27 N 70.35042959 W 149.09107600 13.56 5978553.17 611937. 12 N 70.35035338 W 149.09117802 1326 5978522.73 611926. 42 N 70.35027068 W 149.09126861 12.18 5978491.47 611917. 91 N 70.35018560 W 149.09134142 2.45 5978461.32 611910. 99 N 70.35010354 W 149.09140123 1.31 5978431.33 611904. 18 N 70.35002187 W 149.09146017 6.40 5978399.61 611897. 37 N 70.34993552 W 149.09151934 11.90 5978369.13 611892. 24 N 70.34985245 W 149.09156463 4.61 5978338.86 611888. 44 N 70.34976992 W 149.09159915 2.24 5978306.56 611884. 97 N 70.34968182 W 149.09163127 0.98 5978276.32 611881. 84 N 70.34959933 W 149.09166033 1.04 5978244.36 611878. 39 N 70.34951216 W 149.09169216 0.81 5978212.92 611875. 01 N 70.34942641 W 149.0917~ 0.51 5978182.50 611871. 83 N 70.34934344 W 149.0917 2.77 5978150.71 611868. 27 N 70.34925675 W 149.09178571 1.59 5978118.54 611864. 38 N 70.34916901 W 149.09182117 16.09 5978087.67 611860. 92 N 70.34908481 W 149.09185301 1.02 5978055.39 611857. 51 N 70.34899678 W 149.09188458 2.66 5978024.36 611854. 02 N 70.34891215 W 149.09191666 4.71 5977992.39 611850. 56 N 70.34882494 W 149.09194864 4.02 5977961.39 611847. 80 N 70.34874039 W 149.09197482 1.67 5977929.36 611845. 35 N 70.34865298 W 149.09199853 1.94 5977897.85 611843. 17 N 70.34856699 W 149.09202005 1.17 5977865.82 611841. 05 N 70.34847958 W 149.09204118 1.44 5977834.24 611838. 86 N 70.34839338 W 149.09206273 SurveyEditor Ver SP 2.1 Bld( doc40x_100 ) S-125\S-125\S-125\S-125 Generated 8/21/2007 11:25 AM Page 4 of 5 ti 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 11455.06 90.27 184.09 6700.53 6764.43 3939.71 8345.52 7565.06 -2514.62 -7134.90 9.51 5977802.85 11487.25 90.84 182.56 6700.22 6764.12 3971.54 8377.71 7577.56 -2546.75 -7136.77 5.07 5977770.69 11518.91 93.95 183.36 6698.90 6762.80 4002.77 8409.34 7589.77 -2578.34 -7138.40 10.14 5977739.09 11551.51 97.89 185.75 6695.53 6759.43 4034.92 8441.76 7603.22 -2610.65 -7140.97 14.11 5977706.74 Last MWD+IFR+MS 11576.45 97.70 184.90 6692.15 6756.05 4059.46 8466.47 7613.86 -2635.25 -7143.27 3.46 5977682.10 TD ( Projected ) 11623.00 97.70 184.90 6685.91 6749.81 4105.24 8512.60 7633.58 -2681.22 -7147.21 0.00 5977636.09 Survey Type: Definitive Survey NOTES: GYD GC MS -( Gyrodata - cont. drillpipe m/s -- Gyrodata pump-down multishot surveys with continuous tool (RGS-CT) in drill-pipe. INC+TREND -( Inclination only surveys in near-vertical hole-where formation dip and experience enables direction of drift to be predicted. Replaces ex-BP "Inclinometer (azimuth in known quadrant)" model. ) MWD + IFR + MS -( In-field referenced MWD with mult-station analysis and correction applied in post-processing. Assumes a BHA sag correction is applied to enhance inclination accuracy. ) Leqal Description: Northing (Y) [ftUS] Easting (X) [ftUS] Surface : 4226 FSL 4502 FEL S35 T12N R12E UM 5980430.19 618930.37 BHL : 1541 FSL 1093 FEL S33 T12N R12E UM 5977636.09 611827.24 611836.90 N 70.34830771 W 149.09208250 611835.54 N 70.34821992 W 149.09209740 611834.41 N 70.34813362 W 149.09211042 611832.35 N 70.34804534 W 149.09213104 611830.45 N 70.34797812 W 149.09214947 611827.24 N 70.34785254 W 149.09218109 • r` 1I u SurveyEditor Ver SP 2.1 Bid( doc40x_100 ) S-125\S-125\S-125\S-125 Generated 8/21/2007 11:25 AM Page 5 of 5 ;.€ = 4-1 / t14~1_LNEAD f=h~ :~3CTtlAT~R _ ~~ ~ lEC7 KB. ELcl~+ = 83_9 B~. ~LEV ~ ~ 6i.25 Kt?P ~ ?~4' Ar1ax Ah~Ee = i{~0 ~ t~1fi91, . L?~tum - 1{~3~1 Clatum ~TVV U - 670{l ~~ ~r~~ cs~, ~~ ~ ao e~-c, ~t~ = s.ss~^ ~-j 4318' I- 4-1/~" TBG, 'I 2.f~#, 13-Gr, V7, .C~152 bpf, lL2 = 3.958" ~41+~' cs~, zs~z, ~.-so Tcii x a~~~, xc~, ~a = e.2~s~x ~-~{ 6~7G' ~I111~"t'lt.tt'l'31 ~~ = ~.$'~~a'~ ~'~~Q'$~~` ~-11~" X[3 [~llRC) SLIC?1~JC~ SLE~VE (~-1d~'" ""V~~, 9 2#> ~3CR-$t#, .Ot787 bpf, Ifl = 2.932'" ~--i '~~~""~'~"' ~~° ~;a~E~ v,~~~~re~c~ ~ ifl~'~' CSG, Z6~,, 1.-6t3, BTG-M, ~ = f'ERF~RATIfl~f SU Rl' f~~F LC3G. SVVS ACDtd Vl~1f~C'J: 7l14t~t1t~7 A d1iGLE AT TU~P ~EE2F: 6i °~ 10370' h+trte: Refer to Pr~dcacki~n [~B tar f~~tttr~cal per[ clata SI~E ~Pf I AL C?pnlSqz C~A"`tE 2 718"" 6' t t737t}-i Q45t1 U Q7t261Q7 2-1#2" fi' 9C?3~C1-t£?53Q ET fl7/"lfilt?7 2-4l2" 5 'l1D58t~-'tfP6S1Ci C3 CI7/16C07 2-112" 6 'I f3fi5A-'! f168D C! t37J161Ck3 2-112" ~s 1~75[~-1 Q92Q 0 t1711 G!t}7 2-1l2"" 6 9t}97f3-71£3~7 [l D?t16~i3~ 2 7l8'" 6 tfl97Q-t 1fl35 Q fl7P26ftt7 ~ 7~8" 6 110$5-'t 1375 t3 t~712ti1C~7 <-t'">"" fi 11345-11~1~ t7 ~311~Sit~7 ~ S~ IVC9'fES. ''xC.~RflME T8C3`*~ I ~~~ ~~ , , ... . .. 1U11• H 9-5l8"TRM'PC3RTCOLLAR 2~13' 4112" NES X NIP, I~ = 3;$93~~ ~494` 4-i12" X 3-1Y2" XC), It7 ~ 2.~2" ST ~t#p 7VD DEV TYPE VL1t 1.ATGN F"qRT DATE 4 54~ 38{7'7 58 ~(BG2 CH1fi' iNf 0 07t27107 3 75 i 7 5tl{i7 53 FCE3G-2 1M;7Y INT 0 Q7f2?tfl7 2 8554 5&[71 ~i K~G-2 IMutl' INT Cl 07127d~7 1 9994 6549 ~2 KBG-t DGK It~[T {7 071271t37 ~(?{I$~' - 13-i d2'" XI7 nUR~} SL~IMG 5~ V, 1D =~.813" `[p1~l~" 3-1t~" H~S X F31P, IB = 2,$13°' ~ 1~?1~8' _ 3-it2" SY~14~1-iUNY CaA~ECARRIER 1 C}'I~i•~ 7'. X~ 112" BKI~ S-3 PKR, ID =~.875" ' jQ'~7~' 3-t!"2" H~ X N~'~f t~HG~ {L3 = 3.813" ~{T"~ 3~ir' 3-1 #2" HES X N~', ~5 =~ 813'• '~ ~2"~ ~i" 7~~ 7~ ~" BK~t ~XF' F~CR & ~N62 HC'aR wfTCEBAG~GSLV, IE7=5_25" '~ t?s~"1 J' 3-t tz" vstl..~G, ~r = 2:~52" (7" I+RAR}~EF~ .~1" VYI RA ~fA G ~ YYt RA T,AG ~BTQ ~ LTIR, 12.5 ~, ~-8t1 1BT-M, ID = 3.958'" TD -L 11623' ~ a u~~~ urarr w~~ t~: ~-~?s hto: 2t~7~83€~ APk t~a: ~rQ~~129=23~&1-€l0 SEC 35, `Ct 2, R12 42?6` ~SL 4542' F~ ~3P F.~epfarati~n (Alaska~ J" ~ ~ ( a qo ~ SCHLUMBERGER Survey report Client ...................: BP Exploration (Alaska) Inc. Field ...... .............: Aurora Well .....................: 5-125 API number ...............: 50-029-23361-00 Engineer .................: St. Amour/Minnich Rig :.....................: Nabors 9ES 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 35.40 ft N/A (Topdrzve) 63.90 ft ----- Vertical section origin---------------- Latitude (+N/S-).........: 0.00 ft Departure (+E/W-)........: 0.00 ft ----- Platform reference point ------ Latitude (+N/S-).........: -999.25 ft Departure (+E/W-)........: -999.25 ft Azimuth from Vsect Origin to target: 190.30 degrees 17-Ju1-2007 11:31:08 Page 1 of 7 Spud date ................: 28-Jun-07 Last survey date.........: 14-Ju1-07 Total accepted surveys...: 151 MD of first survey........ 0.00 ft ~ MD of last survey........: 11623.00 ft ----- Geomagnetic data ---------------------- Magnetic model...........: BGGM version 2006 Magnetic date ............: 09-Ju1-2007 Magnetic field strength..: 1152.82 HCNT Magnetic dec (+E/W-).....: 23.56 degrees Magnetic dip .............: 80.91 degrees ----- MWD survey Reference Reference G ..............: Reference H ............... Reference Dip ............: Tolerance of G...........: Tolerance of H............ Tolerance of Dip.........: Criteria --------- 1002.68 mGal 1152.82 HCNT 80.91 degrees (+/-) 2.50 mGal (+/-) 6.00 HCNT (+/-) 0.45 degrees ---- Corrections --- -------- Magnetic dec (+E/W-)...... 23.75 degrees Grid convergence (+E/W-).. 0.00 degrees Total az corr (+E/W-)....: 23.75 degrees (Total az corr = magnetic dec - grid conv) Survey Correction Type .... I=Sag Corrected Inclination M=Schlumberger Magnetic Correction S=5hel1 Magnetic Correction F=Failed Axis Correction R=Magnetic Resonance Tool Correction D=Dmag Magnetic Correction SCHLUMBERGER Survey Report 17-Ju1-2007 11:31:08 Page 2 of 7 Seq Measured Incl Azimuth Course -------- TVD -------- Vertical -----p-= Dis 1 ======p= Dis 1 _______ 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 0.00 290.00 0.00 - 0.00 -------- 0.00 ------- 0.00 _ 0.00 _______ 0.00 ___----- 0 00 0.00 TIP None 2 100.00 0.42 276.75 100.00 100.00 0.02 0.04 -0.36 0.37 276.75 0.42 BP GYD CT DMS 3 200.00 0.30 290.83 100.00 200.00 -0.00 0.18 -0.97 0.99 280.44 0.15 BP GYD CT DMS 4 300.00 2.21 303.33 100.00 299.97 -0.80 1.33 -2.83 3.13 295.21 1.92 BP _ GYD CT DMS S 400.00 3.81 303.08 100.00 399.83 -2.85 4.20 -7.22 8.36 300.20 1.60 BP _ _GYD CT DMS 6 500.00 6.37 300.85 100.00 499.42 -6.08 8.86 -14.77 17.23 300.97 2.57 BP GYD CT DMS 7 600.00 8.79 302.13 100.00 598.54 -10.87 15.77 -26.01 30.42 301.24 2.43 BP _ GYD CT DMS 8 700.00 9.11 288.49 100.00 697.34 -14.84 22.35 -39.99 45.81 299.20 2.14 BP GYD CT DMS 9 800.00 8.77 274.30 100.00 796.13 -15.17 25.43 -55.10 60.68 29 4.78 2.23 BP GYD CT DMS 10 900.00 10.62 266.72 100.00 894.71 -12.21 25.48 -71.90 76.28 . 289.51 2.24 BP _GYD CT DMS 11 945.91 11.64 264.61 45.91 939.75 -9.96 12 1041.92 12.66 264.08 96.01 1033.61 -4.40 13 1137.36 13.40 258.13 95.44 1126.60 2.69 14 1233.22 15.01 255.19 95.86 1219.52 12.15 15 1328.37 18.54 254.79 95.15 1310.61 23.90 16 1423.60 20.88 257.38 95.23 1400.26 37.03 17 1519.06 26.12 258.28 95.46 1487.77 51.54 18 1614.19 27.72 257.62 95.13 1572.59 67.93 19 1709.33 32.41 256.56 95.14 1654.91 86.73 20 1804.70 35.60 256.18 95.37 1733.96 108.37 21 1900.04 38.04 257.51 95.34 1810.27 131.09 22 1996.03 40.18 259.82 95.99 1884.75 153.39 23 2091.73 40.27 260.06 95.70 1957.82 174.89 24 2187.62 42.78 261.87 95.89 2029.61 195.91 25 2283.36 45.68 263.13 95.74 2098.21 216.30 24.80 -80.74 22.80 -100.84 19.45 -122.07 13.99 -144.94 6.87 -171.46 -0.81 -202.64 -8.80 -239.84 -17.80 -281.96 -28.47 -328.39 -41.05 -380.22 -54.03 -435.85 -65.90 -495.22 -76.70 -556.07 -86.66 -618.84 -95.35 -685.05 84.46 287.07 103.39 282.74 123.61 279.05 145.62 275.51 171.60 272.29 202.64 269.77 240.00 267.90 282.52 266.39 329.63 265.04 382.43 263.84 439.19 262.93 499.58 262.42 561.33 262.15 624.88 262.03 691.65 262.08 2.39 BP_MWD+IFR+MS 1.07 BP_MWD+IFR+MS 1.60 BP_MWD+IFR+MS 1.84 BP MWD+IFR+MS 3.71 BP_MWD+IFR+MS 2.62 BP_MWD+IFR+MS 5.50 BP MWD+IFR+MS 1.71 BP_MWD+IFR+MS 4.96 BP_MWD+IFR+MS 3.35 BP_MWD+IFR+MS 2.69 BP_MWD+IFR+MS 2.70 BP_MWD+IFR+MS 0.19 BP_MWD+IFR+MS 2.90 BP_MWD+IFR+MS 3.16 BP_MWD+IFR+MS 26 2379.40 52.50 266.01 96.04 2161.07 235.88 -102.12 -757.26 764.11 262.32 7.45 BP MWD+IFR+MS 27 2475.06 56.03 267.42 95.66 2216.93 254.09 -106.55 -834.76 841.54 262.73 3.88 BP _ MWD+IFR+MS 28 2571.14 55.66 267.96 96.08 2270.87 271.45 -109.76 -914.21 920.77 263.15 0.60 BP _ MWD+IFR+MS 29 2666.61 55.86 266.39 95.47 2324.59 289.37 -113.65 -993.03 999.51 263.47 1.38 BP _ MWD+IFR+MS 30 2762.12 58.08 264.20 95.51 2376.66 310.12 -120.23 -1072.82 1079.54 263.61 3.02 BP _ MWD+IFR+MS ~J SCHLUMBERGER Survey Report 17 -Ju1-2007 11:31:08 Page 3 of 7 Seq Measured Incl Azimuth Course TVD -- Vertical ------ Disp ---------- l 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 2857.36 57.73 264.21 95.24 2427.26 ------- 332.49 ------ -128.38 ---------- -1153.09 ------- 1160.22 ---- -------- 263.65 ----- 0.37 - BP ---- ------ MGVD+IFR+MS 32 2953.02 57.12 264.51 95.66 2478.76 354.62 -136.30 -1233.31 1240.82 263.69 0.69 BP _ MWD+IFR+MS 33 3048.13 56.69 264.36 95_11 2530.70 376.41 -144.03 -1312.62 1320.50 263.74 0.47 BP _ ML°JD+IFR+MS 34 3143.94 56.56 263.92 95.81 2583.40 398.67 -152.20 -1392.21 1400.50 263.76 0.41 BP _ M[aD+IFR+MS 35 3239.40 58.17 263.48 95.46 2634.88 421.64 -161.02 -1472.11 1480.89 263.76 1.73 BP _ _MWD+IFR+MS ~ 36 3334.98 57.59 263.53 95.58 2685.70 445.03 -170.18 -1552.54 1561.84 263.74 0.61 BP MWD+IFR+MS 37 3430.78 56.83 263.54 95.80 2737.58 468.26 -179.25 -1632.56 1642.37 263.73 0.79 BP _ MWD+IFR+MS 38 3526.01 57.47 261.62 95.23 2789.24 492.61 -189.58 -1711.89 1722.35 263.68 1.82 BP _ MWD+IFR+MS 39 3621.59 56.55 261.46 95.58 2841.28 518.40 -201.38 -1791.18 1802.47 263.59 0.97 BP _ MWD+IFR+MS 40 3717.21 56.18 261.15 95.62 2894.25 544.31 -213.41 -1869.88 1882.02 263.49 0.47 BP _ _MWD+IFR+MS 41 3813.17 58.35 261.98 95.96 2946.14 570.23 -225.24 -1949.72 1962.69 263.41 2.38 BP MWD+IFR+MS 42 3908.61 58.39 262.71 95.44 2996.19 595.28 -236.07 -2030.26 2043.94 263,37 0.65 BP _ MWD+IFR+MS 43 4004.63 58.29 262.67 96.02 3046.59 620.00 -246.47 -2111.32 2125.66 263.34 0.11 BP _ MWD+IFR+MS 44 4100.36 58.12 262.60 95.73 3097.02 644.69 -256.90 -2192.02 2207.02 263.32 0.19 BP _ MWD+IFR+MS 45 4195.85 57.93 262.37 95.49 3147.59 669.47 -267.49 -2272.32 2288.01 263.29 0.29 BP _ _MWD+IFR+MS 46 4267.60 57.73 262.61 71.75 3185.79 688.05 -275.43 -2332.54 2348.74 263.27 Q.40 BP MWD+IFR+MS 47 4330.93 57.39 264.46 63.33 3219.77 703.47 -281.45 -2385.64 2402.19 263.27 2.52 _ BP MWD+IFR+MS 48 4426.74 57.14 262.40 95.81 3271.58 726.85 -290.67 -2465.70 2482.77 263.28 1.83 _ BP MWD+IFR+MS 49 4520.93 58.00 261.00 94.19 3322.09 752.21 -302.15 -2544.36 2562.24 263.23 1.55 _ BP_ MWD+IFR+MS 50 4616.97 59.41 261.52 96.04 3371.98 778.98 -314.61 -2625.47 2644.26 263.17 1.54 BP_ ~ MGVD+IFR+MS 51 4712.95 59.51 261.13 95.98 3420.75 805.86 -327.08 -2707.19 2726.88 263.11 0.37 BP MWD+IFR+MS 52 4808.75 59.92 260.39 95.80 3469.06 833.53 -340.37 -2788.84 2809.54 263.04 0.79 _ BP MWD+IFR+MS 53 4903.61 59.61 260.20 94.86 3516.83 861.57 -354.18 -2869.63 2891.40 262.96 0.37 _ BP MWD+IFR+MS 54 4999.36 59.56 260.69 95.75 3565.30 889.61 -367.89 -2951.05 2973.90 262.89 0.44 _ BP MWD+IFR+MS 55 5094.38 58.37 261.17 95.02 3614.29 916.62 -380.72 -3031.45 3055.27 262.84 1.33 _ BP_ MWD+IFR+MS 56 5190.61 58.06 261.67 96.23 3664.98 943.09 -392.93 -3112.33 3137.04 262.80 0.55 BP MWD+IFR+MS 57 5286.44 57.77 262.17 95.83 3715.88 968.69 -404.34 -3192.72 3218.22 262.78 0.54 _ BP MWD+IFR+MS 58 5382.77 57.82 262.72 96.33 3767.22 993.68 -415.06 -3273.52 3299.73 262.77 0.49 _ BP MWD+IFR+MS 59 5478.18 57.58 261.75 95.41 3818.21 1018.69 -425.95 -3353.43 3380.37 262.76 0.90 _ BP MWD+IFR+MS 60 5573.62 58.42 262.40 95.44 3868.78 1044.00 -437.11 -3433.59 3461.30 262.75 1.05 _ BP MWD+IFR+MS SCHLUMBERGER Survey Report 17-Ju1-2007 11:31:08 Page 4 of 7 Seq Measured Incl Azimuth # depth angle angle - (ft) (deg) (deg) 61 5669.33 56.99 263.71 62 5764.77 56.58 262.70 63 5859.94 56.69 263.33 64 5955.90 57.25 263.48 65 6051.46 56.12 266.26 66 6147.71 55.25 265.32 67 6242.81 55.77 265.46 68 6338.46 55.50 265.16 69 6434.04 55.31 265.09 70 6529.26 55.09 265.19 71 6625.29 56.29 263.43 72 6720.90 56.84 263.04 73 6817.01 56.71 262.76 74 6911.91 56.72 263.00 75 7007.78 56.82 263.07 76 7103.61 56.87 262.67 77 7199.13 56.82 262.58 78 7294.54 57.96 263.02 79 7390.01 55.34 262.70 80 7485.74 53.35 261.37 81 7581.21 53.28 260.25 82 7677.58 53.13 259.11 83 7773.18 51.54 263.01 84 7868.26 50.30 264.87 85 7964.56 49.96 263.76 86 8059.31 49.40 263.02 87 8155.37 48.50 262.10 88 8250.81 49.89 262.41 89 8345.82 51.27 264.39 90 8441.34 51.03 263.49 Course length (ft) 95.71 95.44 95.17 95.96 95.56 96.25 95.10 95.65 95.58 95.22 96.03 95.61 96.11 94.90 95.87 95.83 95.52 95.41 95.47 95.73 95.47 96.37 95.60 95.08 96.30 94.75 96.06 95.44 95.01 95.52 TVD depth (ft) 3919.92 3972.20 4024.54 4076.84 4129.34 4183.60 4237.45 4291.44 4345.71 4400.05 4454.18 4506.86 4559.52 4611.60 4664,14 4716.55 4768.79 4820,21 4872.69 4928,49 4985.53 5043.25 5101,68 5161.62 5223.35 5284.66 5347.74 5410.11 5470.45 5530.36 --- ---------------- ------ Vertical Displ Displ Total section +N/S- +E/W- displ (ft) (ft) (ft) (ft) ----- ---------------- ------ 1067.99 -446.90 -3513.90 3542.20 1091.46 -456.34 -3593.18 3622.04 1115.07 -466.01 -3672.08 3701.53 1138.45 -475.25 -3751.99 3781.97 1159.71 -482.40 -3831.52 3861.76 1179.62 -488.23 -3910.80 3941.16 1199.79 -494.53 -3988.93 4019.47 1220.21 -500.99 -4067.62 4098.35 1240.81 -507.68 -4146.01 4176.98 1261.26 -514.30 -4223.92 4255.12 1283.11 -522.17 -4302.84 4334.41 1306.53 -531.57 -4382.08 4414.20 1330.57 -541.51 -4461.86 4494.60 1354.32 -551.34 -4540.58 4573.93 1378.12 -561.07 -4620.18 4654.12 1402.15 -571.02 -4699.79 4734.35 1426.43 -581.29 -4779.09 4814.31 1450.60 -591.36 -4858.83 4894.68 1474.49 -601.27 -4937.95 4974.42 1498.86 -612.03 -5014.98 5052.19 1524.40 -624.26 -5090.56 5128.69 1551.58 -638.09 -5166.48 5205.73 1576.53 -649.87 -5241.20 5281.34 1597.33 -657.67 -5314.59 5355.13 1617.68 -664.99 -5388.13 5429.01 1638.69 -673.30 -5459.89 5501.25 1660.76 -682.68 -5531.73 5573.69 1683.14 -692.41 -5603.31 5645.93 1704.46 -700.84 -5676.21 5719.31 1725.41 -708.69 -5750.18 5793.69 At Azim (deg) 262.75 262.76 262.77 262.78 262.82 262.88 262.93 262.98 263.02 263.06 263.08 263.08 263.08 263.08 263.08 263.07 263.07 263.06 263.06 263.04 263.01 262.96 262.93 262.95 262.96 262.97 262.96 262.96 262.96 262.97 DLS Srvy Tool (deg/ tool Corr 100f) type (deg) 1.89 BP_MWD+IFR+MS 0.98 BP_MWD+IFR+MS 0.56 BP_MWD+IFR+MS 0.60 BP_MWD+IFR+MS 2.70 BP_MWD+IFR+MS • 1.21 BP_MWD+IFR+MS 0.56 BP_MWD+IFR+MS 0.38 BP_MWD+IFR+MS 0.21 BP_MWD+IFR+MS 0.25 BP_MWD+IFR+MS 1.96 BP_MWD+IFR+MS 0.67 BP_MWD+IFR+MS 0.28 BP_MWD+IFR+MS 0.21 BP_MWD+IFR+MS 0.12 BP_MWD+IFR+MS 0.35 BP_MGVD+IFR+MS 0.09 BP_Min7D+IFR+MS 1.26 BP_MWD+IFR+MS 2.76 BP_MWD+IFR+MS • 2.37 BP_MWD+IFR+MS 0.94 BP_MWD+IFR+MS 0.96 BP_MWD+IFR+MS 3.63 BP_MWD+IFR+MS 2.00 BP_MWD+IFR+MS 0.95 BP_MWD+IFR+MS 0.84 BP_MWD+IFR+MS 1.18 BP_MWD+IFR+MS 1.48 BP_MWD+IFR+MS 2.17 BP_MWD+IFR+MS 0.78 BP_MWD+IFR+MS SCHLUMBERGER Survey Report Seq Measured Incl Azimuth # depth angle angle - (ft) (deg) (deg) 91 8537.66 50.84 262.76 92 8632.64 50.18 261,56 93 8728.27 50.05 260.87 94 8823.95 49.88 260.67 95 8919.94 49.59 257.05 96 9015.45 49.32 251.90 97 9111.43 48.91 247.03 98 9206.96 48.35 242.08 99 9302.66 47.95 238,75 100 9397.65 47.45 234.79 101 9493.58 47.41 233.86 102 9588.51 47.20 231.16 103 9684.04 47.70 228.88 104 9780.22 47.96 223.46 105 9875.78 48.74 217.14 106 9970.78 51.82 212.07 107 10066.29 51.42 209.19 108 10161.91 52.76 207.47 109 10257.51 55.83 207.22 110 10352.98 59.39 206.67 111 10358.00 59.41 206.66 112 10371.00 61.43 206.09 113 10401.87 60.07 205.77 114 10434.63 60.35 205.44 115 10467.42 62.68 205.13 116 10497.27 68.05 204.86 117 10530.33 73.68 204.57 118 10562.58 79.09 204.30 119 10594.22 85.33 204.03 120 10627.86 91.57 205.09 Course length (ft) 96.32 94.98 95.63 95.68 95.99 95.51 95.98 95.53 95.70 94.99 95.93 94.93 95.53 96.18 95.56 95.00 95.51 95.62 95.60 95.47 5.02 13.00 30.87 32.76 32.79 29.85 33.06 32.25 31.64 33.64 17-Ju1-2007 11:31:08 Page 5 of TVD Vertical Displ Displ Total At depth section +N/S- +E/W- displ Azim (ft) (ft) (ft) (ft) (ft) (deg) 5591.07 1747.49 -717.64 -5824.43 5868 47 262.98 5651.47 1770.31 -727.63 -5897.04 5941.76 262.97 5712.79 1794.30 -738.84 -5969.56 6015.11 262.94 5774.34 1818.79 -750.59 -6041.87 6088.31 262.92 5836.39 1845.55 -764.73 -6113.72 6161.36 262.87 5898.50 1877.14 -784.14 -6183.60 6233.12 262.77 596I.34 1914.31 -809.57 -6251.52 6303.72 262.62 6024.50 1956.15 -840.34 -6316.23 6371.88 262.42 6088.36 2001.85 -875.52 -6378.20 6438.01 262.18 6152.31 2050.21 -914.00 -6436.96 6501.52 261.92 6217.20 2101.01 -955.20 -6494.35 6564.22 261.63 6281.58 2152.68 -997.66 -6549.70 6625.24 261.34 6346.19 2206.80 -1042.87 -6603.61 6685.45 261.03 6410.78 2264.53 -1092.21 -6655.00 6744.03 260.68 6474.32 2326.32 -1146.63 -6701.12 6798.51 260.29 6535.05 2392.90 -1206.77 -6742.53 6849.67 259.85 6594.36 2463.09 -1271.18 -6780.67 6898.80 259.38 6653.11 2534.83 -1337.59 -6816.46 6946.46 258.90 6708.89 2609.04 -1406.53 -6852.11 6994.98 258.40 6760.03 2686.27 -1478.39 -6888.63 7045.48 257.89 6762.58 2690.41 -1482.25 -6890.57 7048.19 257.86 6769.00 2701.27 -1492.38 -6895.59 7055.24 257.79 6784.08 2727.21 -1516.60 -6907.37 7071.90 257.62 6800.36 2754.63 -1542.24 -6919.65 7089.44 257.44 6816.00 2782.47 -1568.30 -6931.96 7107.16 257.25 6828.44 2808.71 -1592.88 -6943.42 7123.79 257.08 6839.27 2838.95 -1621.24 -6956.47 7142.90 256.88 6846.86 2869.33 -1649.77 -6969.43 7162.04 256.68 6851.14 2899.75 -1678.36 -6982.26 7181.14 256.48 6852.05 2932.33 -1708.93 -6996.23 7201.92 256.27 7 DLS Srvy Tool (deg/ tool Corr 100f) type (deg) 0.62 BP_MWD+IFR+MS 1.20 BP_MWD+IFR+MS 0.57 BP_MWD+IFR+MS 0.24 BP_MWD+TFR+MS 2.89 BP_MWD+IFR+MS • 4.11 BP_MWD+IFR+MS 3.86 BP_MWD+IFR+MS 3.93 BP_MWD+IFR+MS 2.63 BP_MWD+IFR+MS 3.13 BP_MWD+IFR+MS 0.72 BP_MWD+IFR+MS 2.10 BP_MWD+IFR+MS 1.83 BP_MWD+IFR+MS 4.18 BP_MWD+IFR+MS 5.01 BP_MWD+IFR+MS 5.23 BP MWD+IFR+MS 2.40 BP_MWD+IFR+MS 1.99 BP MWD+IFR+MS 3.22 BP_MWD+IFR+MS ~ 3.76 BP_MWD+IFR+MS 0.43 BP_BLIND 16.00 BP_BLIND 4.50 BP_INC+TREND 1.22 BP_INC+TREND 7.15 BP_INC+TREND 18.01 BP_INC+TREND 17.05 BP_INC+TREND 16.79 BP_INC+TREND 19.74 BP_MWD+IFR+MS 18.81 BP_INC+TREND SCHLUMBERGER Survey Report 17-Ju1-2007 11:31:08 Page 6 of 7 Seq Measured Incl Azimuth # depth angle angle - (ft) (deg) (deg) 121 10660.26 97.75 206.12 122 10691.23 99.92 202.48 123 10723.97 99.47 198.10 124 10756.79 98.60 194.15 125 10788.09 99.05 193.52 126 10819.25 99.23 193.89 127 10852.06 97.97 192.19 128 10883.23 96.59 188.72 129 10913.96 97.15 187.41 130 10946.71 97.32 186.69 131 10977.36 97.15 186.94 132 11009.77 97.39 187.18 133 11041.66 97.42 186.92 134 11072.51 97.56 186.85 135 11104.78 97.60 187.75 136 11137.50 98.11 187.85 137 11168.73 93.20 186.77 138 11201.24 93.24 187.10 139 11232.53 93.94 187.55 140 11264.75 92.73 186.63 141 11295.90 92.63 185.38 142 11328.07 93.12 185.16 143 11359.71 93.32 184.58 144 11391.87 93.60 184.83 145 11423.59 93.15 184.90 146 11455.06 90.27 184.09 147 11487.25 90.84 182.56 148 11518.91 93.95 183.36 149 11551.51 97.89 185.75 150 11576.45 97.70 184.90 Course length (ft) 32.40 30.97 32.74 32.82 31.30 31.16 32.81 31.17 30.73 32.75 30.65 32.41 31.89 30.85 32.27 32.72 31.23 32.51 31.29 32.22 31.15 32.17 31.64 32.16 31.72 31.47 32.19 31.66 32.60 24.94 TVD depth (ft) 6849.42 6844.66 6839.15 6833.99 6829.19 6824.24 6819.33 6815.38 6811.71 6807.58 6803.72 6799.62 6795.51 6791.49 6787.23 6782.76 6779.69 6777.86 6775.90 6774.03 6772.57 6770.96 6769.18 6767.24 6765.37 6764.43 6764.12 6762.80 6759.43 6756.05 - ----- ---------------- ------ Vertical Displ Displ Total section +N/S- +E/W- displ (ft) (ft) (ft) (ft) -------- ---------------- ------ 2963.46 -1738,03 -7010.18 7222.42 2993.14 -1765.92 -7022.77 7241.39 3024.92 -1796.18 -7033.96 7259.67 3057.16 -1827.31 -7042.96 7276.15 3088.03 -1857.34 -7050.35 7290.90 3118.74 -1887.23 -7057.64 7305.61 3151.14 -1918.83 -7064.96 7320.90 3182.05 -1949,24 -7070.57 7334.33 3212.54 -1979.44 -7074.85 7346.54 3244.97 -2011.68 -7078.84 7359.13 3275.32 -2041.88 -7082.44 7370.91 3307.42 -2073.78 -7086.40 7383.60 3339.00 -2105,17 -7090.28 7396.20 3369.53 -2135,53 -7093.94 7408.41 3401.47 -2167.26 -7098.01 7421.50 3433.85 -2199.37 -7102.41 7435.15 3464.88 -2230,19 -7106.36 7448.09 3497.28 -2262.41 -7110.28 7461.54 3528.47 -2293.39 -7114.26 7474.78 3560.58 -2325.30 -7118.23 7488.40 3591.61 -2356.25 -7121.48 7501.16 3623.62 -2388,24 -7124.43 7514.07 3655.06 -2419.72 -7127.12 7526.67 3687.01 -2451.71 -7129.75 7539.51 3718.54 -2483.26 -7132.44 7552.36 3749.83 -2514.62 -7134.90 7565.06 3781.78 -2546.75 -7136.77 7577.56 3813.15 -2578.34 -7138.40 7589.77 3845.40 -2610,65 -7140.97 7603.22 3870.02 -2635.25 -7143.26 7613.86 At Azim (deg) 256.08 255.89 255.68 255.46 255.24 255.03 254.81 254.59 254.37 254.14 253.92 253.69 253.46 253.25 253.02 252.79 252.58 252.35 252.13 251.91 251.69 251.47 251.25 251.02 250.80 250.59 250.36 250.14 249.92 249.75 DLS Srvy Tool (deg/ tool Corr 100f) type (deg) 19.34 BP_MWD+IFR+MS 13.56 BP_MWD+IFR+MS 13.26 BP_MWD+IFR+MS 12.18 BP_MWD+IFR+MS 2.45 BP_MWD+IFR+MS ~ 1.31 BP_MWD+IFR+MS 6.40 BP_MWD+IFR+MS 11.90 BP_MWD+IFR+MS 4.61 BP_MWD+IFR+MS 2.24 BP_MWD+IFR+MS 0.98 BP_MT-^7D+IFR+MS 1.04 BP_Mi;^dD+IFR+MS 0.81 BP_MV+TD+IFR+MS 0.51 BP_ML9D+IFR+MS 2.77 BP_MG9D+IFR+MS 1.59 BP_NnVD+IFR+MS 16.09 BP_MLVD+IFR+MS 1.02 BP_MT,°~D+IFR+MS 2.66 BP-MVdD+IFR+MS ~ 4.71 BP M6aD+IFR+MS 4.02 BP_M[VD+IFR+MS 1.67 BP_MWD+IFR+MS 1.94 BP_MWD+IFR+h1S 1.17 BP_MWD+IFR+MS 1.44 BP_NILVD+IFR+MS 9.51 BP_MWD+IFR+MS 5.07 BP_MWD+IFR+MS 10.14 BP_MWD+IFR+MS 14.11 BP_MWD+IFR+MS 3.46 BP_MWD+IFR+MS SCHLUMBERGER Survey Report 17 -Ju1-2007 11:31:08 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- +E/W- displ Azim (deg/ tool Corr - (ft) (deg) (deg) (ft) (ft) (ft) (ft) (ft) (ft) (deg) 100f) type (deg) 151 11623.00 97.70 184.90 46.55 6749.81 ------ 3915.94 - -------- 2681.22 - -------- 7147.21 ------- 7633.57 -------- 249.44 ----- 0.00 -=--- ------ Projected to TD [(c)2007 IDEAL ID12_OC_09] • ~ ~ ~ ~ 1 ~ oS W SCHLUMBERGER Survey report Client ...................: Field ..................... Well ...................... API number ...............: Engineer .................. Rig :...................... State :...................: ----- Survey calculation m Method for positions.....: Method for DLS...........: BP Exploration (Alaska) Inc. Aurora 5-125PB1 50-029-23361-70 Franco/St. Amour Nabors 9ES Alaska ethods------------- Minimum curvature Mason & Taylor ----- Depth reference ----------------------- Permanent datum..........: Mean Sea Level Depth reference..........: Driller's Pipe Tally GL above permanent.......: 35.40 ft KB above permanent.......: N/A (Topdrive) DF above permanent.......: 63.90 ft ----- Vertical section origin---------------- Latitude (+N/S-).........: 0.00 ft Departure (+E/W-)........: 0.00 ft ----- Platform reference point--------------- Latitude (+N/S-).........: -999.25 ft Departure (+E/W-)........: -999.25 ft Azimuth from Vsect Origin to target: 256.17 degrees 6-Ju1-2007 22:04:28 Page 1 of 5 Spud date ................: 28-Jun-07 Last survey date.........: 06-Ju1-07 Total accepted surveys...: 115 MD of first survey.......: 0.00 ft MD of last survey........: 10743.00 ft ----- Geomagnetic data ---------------------- Magnetic model...........: BGGM version 2007 Magnetic date ............: 27-Jun-2007 Magnetic field strength..: 57650.85 GAMA Magnetic dec (+E/W-).....: 23.75 degrees Magnetic dip .............: 80.95 degrees ----- MWD survey Reference Criteria -- ------- Reference G ..............: 1002.68 mGal Reference H ..............: 57651.00 GAMA Reference Dip ............: 80.95 degrees Tolerance of G...........: {+/-) 2.50 mGal Tolerance of H...........: (+/-)300.00 GAMA Tolerance of Dip.........: (+/-) 0.45 degrees ----- Corrections --------------------------- Magnetic dec (+E/W-).....: 23.75 degrees Grid convergence (+E/W-).: 0.00 degrees Total az corr (+E/W-)....: 23.75 degrees (Total az corr = magnetic dec - grid conv) Survey Correction Type .... I=Sag Corrected Inclination M=Schlumberger Magnetic Correction S=She11 Magnetic Correction F=Failed Axis Correction R=Magnetic Resonance Tool Correction D=Dmag Magnetic Correction ~ ~J u SCHLUMBERGER Survey Report 6-Ju1-2007 22:04:28 Page 2 of 5 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 0.00 290.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 TIP None 2 100.00 0.42 276.75 100.00 100.00 0.34 0.04 -0.36 0.37 276.75 0.42 BP GYD CT DMS 3 200.00 0.30 290.83 100.00 200.00 0.90 0.18 -0.97 0.99 280.44 0.15 BP GYD CT DMS 4 300.00 2.21 303.33 100.00 299.97 2.43 1.33 -2.83 3.13 295.21 1.92 BP GYD CT DMS 5 400.00 3.81 303.08 100.00 399.83 6.01 4.20 -7.22 8.36 300.20 1.60 BP GYD CT DMS 6 500.00 6.37 300.85 100.00 499.42 12.22 8.86 -14.77 17.23 300.97 7 600.00 8.79 302.13 100.00 598.54 21.48 15.77 -26.01 30.42 301.24 8 700.00 9.11 288.49 100.00 697.34 33.48 22.35 -39.99 45.81 299.20 9 800.00 8.77 274.30 100.00 796.13 47.42 25.43 -55.10 60.68 294.78 10 900.00 10.62 266.72 100.00 894.71 63.73 25.48 -71.90 76.28 289.51 11 945.91 11.64 264.61 45.91 939.75 72.47 24.80 -80.74 84.46 287.07 12 1041.92 12.66 264.08 96.01 1033.61 92.47 22.80 -100.84 103.39 282.74 13 1137.36 13.40 258.13 95.44 1126.60 113.88 19.45 -122.07 123.61 279.05 14 1233.22 15.01 255.19 95.86 1219.52 137.40 13.99 -144.94 145.62 275.51 15 1328.37 18.54 254.79 95.15 1310.61 164.85 6.87 -171.46 171.60 272.29 16 1423.60 20.88 257.38 95.23 1400.26 196.96 -0.81 -202.64 202.64 269.77 17 1519.06 26.12 258.28 95.46 1487.77 234.99 -8.80 -239.84 240.00 267.90 18 1614.19 27.72 257.62 95.13 1572.59 278.04 -17.80 -281.96 282.52 266.39 19 1709.33 32.41 256.56 95.14 1654.91 325.68 -28.47 -328.39 329.63 265.04 20 1804.70 35.60 256.18 95.37 1733.96 379.01 -41.05 -380.22 382.43 263.84 21 1900.04 38.04 257.51 95.34 1810.27 436.13 -54.03 -435.85 439.19 262.93 22 1996.03 40.18 259.82 95.99 1884.75 496.62 -65.90 -495.22 499.58 262.42 23 2091.73 40.27 260.06 95.70 1957.82 558.28 -76.70 -556.07 561.33 262.15 24 2187.62 42.78 261.87 95.89 2029.61 621.62 -86.66 -618.84 624.88 262.03 25 2283.36 45.68 263.13 95.74 2098.21 687.98 -95.35 -685.05 691.65 262.08 26 2379.40 52.50 266.01 96.04 2161.07 759.71 -102.12 -757.26 764.11 262.32 27 2475.06 56.03 267.42 95.66 2216.93 836.03 -106.55 -834.76 841.54 262.73 28 2571.14 55.66 267.96 96.08 2270.87 913.94 -109.76 -914.21 920.77 263.15 29 2666.61 55.86 266.39 95.47 2324.59 991.41 -113.65 -993.03 999.51 263.47 30 2762.12 58.08 264.20 95.51 2376.66 1070.46 -120.23 -1072.82 1079.54 263.61 2.57 BP_GYD CT DMS 2.43 BP_GYD CT DMS 2.14 BP_GYD CT DMS 2.23 BP_GYD CT DMS 2.24 BP_GYD CT DMS 2.39 BP_MWD+IFR+MS 1.07 BP_MWD+IFR+MS 1.60 BP_MWD+IFR+MS 1.84 BP_MWD+IFR+MS 3.71 BP_MWD+IFR+MS 2.62 BP_MWD+IFR+MS 5.50 BP_MWD+IFR+MS 1.71 BP_MWD+IFR+MS 4.96 BP_MWD+IFR+MS 3.35 BP_MWD+IFR+MS 2.69 BP MWD+IFR+MS 2.70 BP MWD+IFR+MS 0.19 BP MWD+IFR+MS 2.90 BP MWD+IFR+MS 3.16 BP MWD+IFR+MS 7.45 BP_MWD+IFR+MS 3.88 BP_MWD+IFR+MS 0.60 BP_MWD+IFR+MS 1.38 BP_MWD+IFR+MS 3.02 BP_MWD+IFR+MS • • SCHLUMBERGER Survey Report 6-Ju1-2007 22:04:28 Page 3 of 5 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 2857.36 57.73 264.21 95.24 2427.26 1150.35 -128.38 -1153.09 1160.22 263.65 0.37 BP MWD+IFR+MS 32 2953.02 57.12 264.51 95.66 2478.76 1230.14 -136.30 -1233.31 1240.82 263.69 0.69 BP MWD+IFR+MS 33 3048.13 56.69 264.36 95.11 2530.70 1308.99 -144.03 -1312.62 1320.50 263.74 0.47 BP MWD+IFR+MS 34 3143.94 56.56 263.92 95.81 2583.40 1388.23 -152.20 -1392.21 1400.50 263.76 0.41 BP MWD+IFR+MS 35 3239.40 58.17 263.48 95.46 2634.88 1467.92 -161.02 -1472.11 1480.89 263.76 1.73 BP MWD+IFR+MS 36 3334.98 57.59 263.53 95.58 2685.70 1548.21 -170.18 -1552.54 1561.84 263.74 0.61 BP MWD+IFR+MS 37 3430.78 56.83 263.54 95.80 2737.58 1628.08 -179.25 -1632.56 1642.37 263.73 0.79 BP - MWD+IFR+MS • 38 3526.01 57.47 261.62 95.23 2789.24 1707.58 -189.58 -1711.89 1722.35 263.68 1.82 BP MWD+IFR+MS 39 3621.59 56.55 261.46 95.58 2841.28 1787.39 -201.38 -1791.18 1802.47 263.59 0.97 BP MWD+IFR+MS 40 3717.21 56.18 261.15 95.62 2894.25 1866.68 -213.41 -1869.88 1882.02 263.49 0.47 BP MWD+IFR+MS 41 3813.17 58.35 261.98 95.96 2946.14 1947.04 -225.24 -1949.72 1962.69 263.41 2.38 BP MWD+IFR+MS 42 3908.61 58.39 262.71 95.44 2996.19 2027.83 -236.07 -2030.26 2043.94 263.37 0.65 BP MWD+IFR+MS 43 4004.63 58.29 262.67 96.02 3046.59 2109.03 -246.47 -2111.32 2125.66 263.34 0.11 BP MWD+IFR+MS 44 4100.36 58.12 262.60 95.73 3097.02 2189.88 -256.90 -2192.02 2207.02 263.32 0.19 BP MWD+IFR+MS 45 4195.85 57.93 262.37 95.49 3147.59 2270.39 -267.49 -2272.32 2288.01 263.29 0.29 BP MWD+IFR+MS 46 4267.60 57.73 262.61 71.75 3185.79 2330.75 -275.43 -2332.54 2348.74 263.27 0.40 BP MWD+IFR+MS 47 4330.93 57.39 264.46 63.33 3219.77 2383.76 -281.45 -2385.64 2402.19 263.27 2.52 BP MWD+IFR+MS 48 4426.74 57.14 262.40 95.81 3271.58 2463.70 -290.67 -2465.70 2482.77 263.28 1.83 BP MWD+IFR+MS 49 4520.93 58.00 261.00 94.19 3322.09 2542.83 -302.15 -2544.36 2562.24 263.23 1.55 BP MWD+IFR+MS 50 4616.97 59.41 261.52 96.04 3371.98 2624.57 -314.61 -2625.47 2644.26 263.17 1.54 BP MWD+IFR+MS 51 4712.95 59.51 261.13 95.98 3420.75 2706.90 -327.08 -2707.19 2726.88 263.11 0.37 BP MWD+IFR+MS ` 52 4808.75 59.92 260.39 95.80 3469.06 2789.36 -340.37 -2788.84 2809.54 263.04 0.79 BP MWD+IFR+MS 53 4903.61 59.61 260.20 94.86 3516.83 2871.10 -354.18 -2869.63 2891.40 262.96 0.37 BP MWD+IFR+MS 54 4999.36 59.56 260.69 95.75 3565.30 2953.44 -367.89 -2951.05 2973.90 262.89 0.44 BP MWD+IFR+MS 55 5094.38 58.37 261.17 95.02 3614.29 3034.58 -380.72 -3031.45 3055.27 262.84 1.33 BP MWD+IFR+MS 56 5190.61 58.06 261.67 96.23 3664.98 3116.03 -392.93 -3112.33 3137.04 262.80 0.55 BP MWD+IFR+MS 57 5286.44 57.77 262.17 95.83 3715.88 3196.82 -404.34 -3192.72 3218.22 262.78 0.54 BP MWD+IFR+MS 58 5382.77 57.82 262.72 96.33 3767.22 3277.84 -415.06 -3273.52 3299.73 262.77 0.49 BP MWD+IFR+MS 59 5478.18 57.58 261.75 95.41 3818.21 3358.03 -425.95 -3353.43 3380.37 262.76 0.90 BP MWD+IFR+MS 60 5573.62 58.42 262.40 95.44 3868.78 3438.54 -437.11 -3433.59 3461.30 262.75 1.05 BP MWD+IFR+MS SCHLUMBERGER Survey Report 6-Ju1-2007 22:04:28 Page 4 of 5 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 5669.33 56.99 263.71 95.71 3919.92 3518.85 -446.90 -3513.90 3542.20 262.75 1.89 BP MWD+IFR+MS 62 5764.77 56.58 262.70 95.44 3972.20 3598.10 -456.34 -3593.18 3622.04 262.76 0.98 BP MWD+IFR+MS 63 5859.94 56.69 263.33 95.17 4024.54 3677.02 -466.01 -3672.08 3701.53 262.77 0.56 BP MWD+IFR+MS 64 5955.90 57.25 263.48 95.96 4076.84 3756.83 -475.25 -3751.99 3781.97 262.78 0.60 BP MWD+IFR+MS 65 6051.46 56.12 266.26 95.56 4129.34 3835.75 -482.40 -3831.52 3861.76 262.82 2.70 BP MWD+IFR+MS 66 6147.71 55.25 265.32 96.25 4183.60 3914.13 -488.23 -3910.80 3941.16 262.88 1.21 BP MWD+IFR+MS 67 6242.81 55.77 265.46 95.10 4237.45 3991.50 -494.53 -3988.93 4019.47 262.93 0.56 BP - MWD+IFR+MS • 68 6338.46 55.50 265.16 95.65 4291.44 4069.45 -500.99 -4067.62 4098.35 262.98 0.38 BP MWD+IFR+MS 69 6434.04 55.31 265.09 95.58 4345.71 4147.17 -507.68 -4146.01 4176.98 263.02 0.21 BP MWD+IFR+MS 70 6529.26 55.09 265.19 95.22 4400.05 4224.41 -514.30 -4223.92 4255.12 263.06 0.25 BP MWD+IFR+MS 71 6625.29 56.29 263.43 96.03 4454.18 4302.92 -522.17 -4302.84 4334.41 263.08 1.96 BP MWD+IFR+MS 72 6720.90 56.84 263.04 95.61 4506.86 4382.10 -531.57 -4382.08 4414.20 263.08 0.67 BP MWD+IFR+MS 73 6817.01 56.71 262.76 96.11 4559.52 4461.95 -541.51 -4461.86 4494.60 263.08 0.28 BP MWD+IFR+MS 74 6911.91 56.72 263.00 94.90 4611.60 4540.74 -551.34 -4540.58 4573.93 263.08 0.21 BP MWD+IFR+MS 75 7007.78 56.82 263.07 95.87 4664.14 4620.35 -561.07 -4620.18 4654.12 263.08 0.12 BP MWD+IFR+MS 76 7103.61 56.87 262.67 95.83 4716.55 4700.03 -571.02 -4699.79 4734.35 263.07 0.35 BP MWD+IFR+MS 77 7199.13 56.82 262.58 95.52 4768.79 4779.50 -581.29 -4779.09 4814.31 263.07 0.09 BP MWD+IFR+MS 78 7294.54 57.96 263.02 95.41 4820.21 4859.33 -591.36 -4858.83 4894.68 263.06 1.26 BP MWD+IFR+MS 79 7390.01 55.34 262.70 95.47 4872.69 4938.52 -601.27 -4937.95 4974.42 263.06 2.76 BP MWD+IFR+MS 80 7485.74 53.35 261.37 95.73 4928.49 5015.89 -612.03 -5014.98 5052.19 263.04 2.37 BP MWD+IFR+MS 81 7581.21 53.28 260.25 95.47 4985.53 5092.20 -624.26 -5090.56 5128.69 263.01 0.94 BP MWD+IFR+MS • 82 7677.58 53.13 259.11 96.37 5043.25 5169.23 -638.09 -5166.48 5205.73 262.96 0.96 BP MWD+IFR+MS 83 7773.18 51.54 263.01 95.60 5101.68 5244.60 -649.87 -5241.20 5281.34 262.93 3.63 BP MWD+IFR+MS 84 7868.26 50.30 264.87 95.08 5161.62 5317.73 -657.67 -5314.59 5355.13 262.95 2.00 BP MWD+IFR+MS 85 7964.56 49.96 263.76 96.30 5223.35 5390.89 -664.99 -5388.13 5429.01 262.96 0.95 BP MWD+IFR+MS 86 8059.31 49.40 263.02 94.75 5284.66 5462.56 -673.30 -5459.89 5501.25 262.97 0.84 BP MWD+IFR+MS 87 8155.37 48.50 262.10 96.06 5347.74 5534.54 -682.68 -5531.73 5573.69 262.96 1.18 BP MWD+IFR+MS 88 8250.81 49.89 262.41 95.44 5410.11 5606.38 -692.41 -5603.31 5645.93 262.96 1.48 BP MWD+IFR+MS 89 8345.82 51.27 264.39 95.01 5470.45 5679.18 -700.84 -5676.22 5719.31 262.96 2.17 BP MWD+IFR+MS 90 8441.34 51.03 263.49 95.52 5530.36 5752.89 -708.69 -5750.18 5793.69 262.97 0.78 BP MWD+IFR+MS ,: . . SCHLUMBERGER Survey Report 6-Ju1-2007 22:04:28 Page 5 of 5 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) 91 8537.66 50.84 262.76 96.32 5591.07 5827.12 -717.64 -5624.43 5868.47 262.98 0.62 BP MWD+IFR+MS 92 8632.64 50.18 261.56 94.98 5651.47 5900.02 -727.63 -5897.04 5941.76 262.97 1.20 BP MWD+IFR+MS 93 8728.27 50.05 260.87 95.63 5712.79 5973.11 -738.84 -5969.56 6015.11 262.94 0.57 BP MWD+IFR+MS 94 8823.95 49.88 260.67 95.68 5774.34 6046.13 -750.59 -6041.87 6088.31 262.92 0.24 BP MWD+IFR+MS 95 8919.94 49.59 257.05 95.99 5836.39 6119.28 -764.73 -6113.72 6161.36 262.87 2.89 BP MWD+IFR+MS 96 9015.45 49.32 251.90 95.51 5898.50 6191.78 -784.14 -6183.60 6233.12 262.77 4.11 BP MWD+IFR+MS 97 9111.43 48.91 247.03 95.98 5961.34 6263.81 -809.57 -6251.52 6303.72 262.62 3.86 BP _MWD+IFR+MS 98 9206.96 48.35 242.08 95.53 6024.50 6333.99 -840.34 -6316.23 6371.88 262.42 3.93 BP MWD+IFR+MS 99 9302.66 47.95 238.75 95.70 6088.36 6402.58 -875.52 -6378.20 6438.01 262.18 2.63 BP MWD+IFR+MS 100 9397.65 47.45 234.79 94.99 6152.31 6468.83 -914.00 -6436.96 6501.52 261.92 3.13 BP MVJD+IFR+MS 101 9493.58 47.41 233.86 95.93 6217.20 6534.40 -955.20 -6494.35 6564.22 261.63 0.72 BP MWD+IFR+MS 102 9588.51 47.20 231.16 94.93 6281.58 6598.30 -997.66 -6549.70 6625.24 261.34 2.10 BP MWD+IFR+MS 103 9684.04 47.70 228.88 95.53 6346.19 6661.46 -1042.87 -6603.61 6685.45 261.03 1.83 BP MWD+IFR+MS 104 9780.22 47.96 223.46 96.18 6410.78 6723.15 -1092.21 -6655.00 6744.03 260.68 4.18 BP MWD+IFR+MS 105 9875.78 48.74 217.14 95.56 6474.32 6780.94 -1146.63 -6701.12 6798.51 260.29 S.O1 BP MWD+IFR+MS . 106 9970.78 51.82 212.07 95.00 6535.05 6835.52 -1206.77 -6742.53 6849.67 259.85 5.23 BP MWD+IFR+MS 107 10066.29 51.42 209.19 95.51 6594.36 6887.96 -1271.18 -6780.67 6898.80 259.38 2.40 BP MWD+IFR+MS 108 10161.91 52.76 207.47 95.62 6653.11 6938.58 -1337.59 -6816.46 6946.46 258.90 1.99 BP MWD+IFR+MS 109 10257.51 55.83 207.22 95.60 6708.89 6989.68 -1406.53 -6852.11 6994.98 258.40 3.22 BP MWD+IFR+MS 110 10352.98 59.39 206.67 95.47 6760.03 7042.32 -1478.39 -6888.63 7045.48 257.89 3.76 BP MWD+IFR+MS 111 10448.66 61.18 206.03 95.68 6807.45 7095.93 -1552.85 -6925.51 7097.46 257.36 1.96 BP MWD+IFR+MS • 112 10544.35 62.11 206.23 95.69 6852.90 7150.01 -1628.46 -6962.59 7150.49 256.84 0.99 BP MWD+IFR+MS 113 10640.02 61.73 205.95 95.67 6897.93 7204.18 -1704.26 -6999.71 7204.20 256.32 0.47 BP MWD+IFR+MS 114 10667.32 61.62 205.86 27.30 6910.89 7219.54 -1725.88 -7010.21 7219.54 256.17 0.50 BP MWD+IFR+MS 115 10743.00 61.62 205.86 75.68 6946.86 7262.06 -1785.80 -7039.26 7262.24 255.76 0.00 Projected to TD I(C)2007 IDEAL ID12 OC 11) ~ • Schlumberger Drilling & Measurements MWD/LWD Log Product Delivery Customer BP Exploration (Alaska) Inc. Dispatched To: Christine Mahnken (AOGCC) Well No S-125 Date Dispatched: 26-Jun-07 Installation/Rig Nabors 9ES Dispatched By: Franklin Medina LWD Log DeliveryV1.1,10-02-03 Data No Of Prints No of Floppies Surveys 2 1 Please sign and return to: ~ames H. ~onnson ReCeIVEd By: BP Exploration (Alaska) Inc. ~-J C/` Petrotechnical Data Center (LR2-1) ~ ~j ~ Zj ~ 900 E. Benson Blvd. Anchorage, Alaska 99508 Fax:907-564-4005 e-mail address: johnsojh~bp.com ~~?-~'~~ ~ • u Drilling & Measurements MWD/LWD Log Product Delivery Customer BP Exploration (Alaska) Inc. Dispatchetl To: Christine Mahnken (AOGCC) Well No S-125PB1 Date Dispatched: 10-Ju1-07 Installation/Rig Nabors-9ES Dispatched By: Franklin Medina LWD Log Delivery V2.1, 03-06-06 Data No Of Prints No of Floppies Surveys 2 1 Please sign and return to: James H. Johnson ReCelved By: BP Exploration (Alaska) Inc. Petrotechnical Data Center (LR2-1) ~ G~ ~ 90D E. Benson Blvd. Anchorage, Alaska 99508 Fax:907-564-4005 e-mail address: johnsojh~bp.com ~ ~~ - ~~ .~ 5-125 Intermediate Hole Cemg~t ~ Page 1 of 1 ~ Maunder, Thomas E (DOA) From: Maunder, Thomas E (DOA) Sent: Thursc{ay, Juiy 05, 2007 3:14 PM To: 'Peltier, Brandon' Sub}ect: RE: S-125 (207-083) Intermediate Hole Cement Thanks Brandon, I will put this message in the file. Nothing further is needed. Good luck with the operation. One thing, please include the permit number following the well name. That helps filing. Call or message with any questions. Tom Maunder, PE AOGCC From: Peitier, Brandon [mailto:Brandon.Peltier@bp.com] Sen#: Thursday, 3uly O5, 2~7 3:10 PM 70: Maunder, Thomas E (DOA) Subject: 5-125 Intermediate Hole Cement Tom c~~l `~~~ As i mentioned on the phone, we will be changing from a 1-stage to a 2-stage cement job on the S-125 7" casing. Stage 1: - Mudpush, 60 bbls, 11.0 ppg - Lead, 96.5 bbis, 12.5 ppg LiteCrete, Top @ 7155' M~ - Tait, 31 bbis, 15.8 G, Top @ 9928' MD Stage 2: Coilar at 7155' MD - Mudpush, 30 bbls, 11.0 ppg - Lead, 70 bbis, 12.5 ppg LiteC~ete, Top @ 5155' MD Brandon Peitier BP Exploration (Alaska}, Inc. Operations Drilling Engineer GPB Rotary Drilling (907) 564-5912 (Direct) (907) 748-7838 (Mobile} Bran don. Peltier@bp. com 7/5/2007 ~ ~ ~ ~ ~ ~ ~ SARAH PALIN, GOVERNOR ~ ~-70t~ 0~ ~i`D t7[0s,7 333 W. 7th AVENUE, SUITE 100 C~~SERQA~O~ CO~IIS'S''I0~ ANCHORAGE,ALASKA 99501-3539 PHONE (907) 279-1433 FAX (907) 276-7542 Robert Tirpack Senior Driling Engineer BP Exploration (Alaska) Inc. PO Box 196612 Anchorage, AK 99519-6612 Re: Prudhoe Bay Field, Aurora Oil Pool, PBU S-125 BP Exploration (Alaska) Inc. Permit No: 207-083 Surface Location: 4226' FSL, 4502' FEL, SEC. 35, T12N, R12E, UM Bottomhole Location: 1626' FSL, 1083' FEL, SEC. 33, T12N, R12E, UM Dear Mr. Tirpack: 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. When providing notice for a representative of the Commission to witness any required test, contact the Commission's petroleum field inspector at (907~9-3607 (pager). K. DATED this ~y of June, 2007 cc: Department of Fish & Game, Habitat Section w/o encl. Department of Environmental Conservation w/o encl. - - - RE~EivEu ~ STATE OF ALASKA ~ ~~ ~ ALA OIL AND GAS CONSERVATION COM ION '~> JUN 1 1?.007 PERMIT TO DRILL 20 AAC 25.005 Alaska Dii & Gas Cons. Commission 1 a. Type of work ~ Drill ^ Redriil ^ Re-Entry 1 b. Current Well Class ^ Exploratory ^ Development Gas ^ Service ~ Multiple Zone ^ Stratigraphic Test ~ Development Oil ^ Single Zone 1 c. Specify if well is propose or: ^ Coalbed Methane ^ Gas Hydrates ^ Shale Gas 2. Operator Name: BP Exploration (Alaska) Inc. 5. Bond: ~ Blanket ^ Single Well Bond No. 6194193 11. Well Name and Number: PBU S-125 ~ 3. Address: P.O. Box 196612, Anchorage, Alaska 99519-6612 6. Proposed Depth: MD 11530 ND 6760 12. Field / Pool(s): Prudhoe Bay Field / Aurora Pool - 4a. Location of Well (Governmental Section): Surface: 4226' FSL 4502' FEL T12N SEC 35 R12E UM (As Staked) ~ 7. Property Designation: ADL 028258 , , , . , , Top of Productive Horizon: 2404' FSL, 980' FEL, SEC. 33, T12N, R12E, UM 8. Land Use Permit: 13. Approximate Spud Date: ~5~~~~~ ~ Total Depth: 1626' FSL, 1083' FEL, SEC. 33, T12N, R12E, UM 9. Acres in Property: 2560 14. Distance to Nearest Property: 14,000' 4b. Location of Well (State Base Plane Coo~dinates): Surface: x-618930 ~ y-5980430 Zone-ASP4 10. KB Elevation (Height above GL): -36.5 feet 15. Distance to Nearest Well Within Poo1: 1,900' 16. Deviated Wells: Kickoff Depth: 300 feet Maximum Hole An le: 100 de rees 17. Maximum Anticipated Pressures in psig (see 20 AAC 25.035) Downhole: 3609 SurFace: 2915 18: Casin Pro ram: cifications To - Settin De th - Bottom uanti of Cement c.f. or sacks Hole Casin Wei ht Grade Cou lin Len th MD ND MD TVD includin sta e data 42" 20" 215.5# A-53 Weld 108' SurFace Surface 108' 108' 260 sx Arctic Set A rox. 12-1/4" 9-5/8" 40# ~-80 BTC 4304' Surface SurFac 4304' 3215' 641 sx AS Lit 411 sx Class 'G' 8-3/4" 7" 26# ~-8 TC-II 6672' urf ce Surface 6672' 448 ' Below 8-3/4" 7" 26# L-80 BTC-M 4010' 6672' 4480' 10682' 6941' 371 sx LiteCrete 167 sx Class 'G' 6-1/8" 4-1/2" 12.6# L-80 IBT-M 1303' 10226' 6679' 11529' 6760' 167 sx Class'G' 19. PRESE NT WELL CONDITIONS UMMARY (To be eompleted for Redrill 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 Length Size Cement Volume - MD ND Conductor / Structural Surface Intermediate Producti n Liner PerForation Depth MD (ft): Perforation Depth ND (ft): 20. Attachments ~ Filing Fee, $100 ^ BOP Sketch ^ Property Plat ^ Diverter Sketch ~ Drilling Program ^ Time vs Depth Plot ^ Shallow Hazard Analysis ^ 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. Printed Name Robert Tirpack Si nature ~~ Contact Brandon Peltier, 564-5912 Title Senior Drilling Engineer Prepared By Name/Number: Phone 564-4166 Date L~/ Terrie Hubble, 564-4628 Commission Use Onl Permit To Drill Number: D ~~O API Number: 50-0~ - 336J'ODOD Permit Approv~{ n See cover letter for Date: ' d~' o/ oth rre uirements Conditions of ApprovaL ~ If box is checked, well may not be used to explore for, test, or produce coalbed methane, gas hydrates, or gas contained shales: ~~oO ~S ` ~~~ ~~ Samples Req'd: ^ Yes (~No Mud Log Req'd: ^ Yes ~No HZS Measures: ~( Yes No i ctional Survey Req'd: ~Yes ^ No Other: '~~~ ~vC~.~ ~D 2 c'~ M~ `1 E~ ~~ Sv ~~ ~O~C~ ~ ~ I~La S.~~ lj ) Date a~ "~ ~ d APPROVED BY THE COMMtSSION , COMMISSIONER Form 10-401 Revised 12/2005 ('~ (~ ~ G I 1 Y A L Submit In Duplicate U ~1 ~ Well Name: S-125 ~ Drill and Complete Plan Summary T e of Well service / roducer / in'ector : Producer Tar et X Y Z TVDss Townshi Ran e Section FSL FEL Surface As-Staked 618930 5980430 Na 12N 12E 35 4226 4502 Pilot Hole Intermediate Tar et 613785 5979700 4970 12N 12E 34 3576 4379 Tar et Start 612050 5978820 6700 12N 12E 33 2722 849 BHL 611943 5978592 6876 12N 12E 33 2496 960 Horizontal Section Tar et1 611925 5978500 6780 12N 12E 33 2404 980 Tar et2 611885 5978075 6720 12N 12E 33 1980 1027 BHL Tar et 3 611835 5977720 6695 12N 12E 33 1626 1083 AFE Number: NA ~'i,ena. ~S 'Lrx~7 Estimated Start Date: -~afq~@; 2007 API Number: 50-029-xxxxx Operatin days: 22 Ri : Nabors 9ES TMD 11530' TVD at TD rkb): 6760' RKB/GL 28.5'/36.5' RTE 65' Well Desi n: Grassroots, Ultra Slim Hole, Aurora Kuparuk Horizontal Producer Current Status: New drill General Well Information: Estimated BHP: 3609 psi (10 ppg EMW) at 6941' TVD Estimated BHT: 148 deg F at 6941' TVD Formation Markers, H drocarbon Zones, and Pore Pressures: Est. Est. Commercial Formation Formation Hydrocarbon Est. Pore Est. Pore Tops To s Uncertaint Bearin Press. Press. Formation ~M~~ TVDss feet Yes/No Psi EMW Gy 405 340 +/- 30' no 153 8.7 SV6 1700 1570 +/- 30' no 707 8.7 Base Permafrost 2075 1 g70 +/- 30' no 842 8.7 EOCU 2378 2090 +/- 30' no 941 8.7 2515 Poss. Gas SV5 2180 +/- 30' h drates 981 8.7 2862 Poss. Gas SV4 2380 +/- 30' h drates 1071 8.7 3583 Poss. Gas SV3 2765 +/- 30' h drates 1244 8.7 3835 Poss. Free gas or gas SV2 2900 +/- 30' h drates 1305 8.7 4397 Poss. Free gas or gas SV1 3200 +/- 30' h drates 1440 8.7 S-125 Permit to Drill Page 1 ~ I ~ UG4 5015 3530 +/- 30' Thin coal 1589 8.7 UG4A 5090 3570 +/- 30' No, water 1607 8.7 UG3 5670 3880 +/- 30' No, thin coals and water 1746 8.7 UG1 66~2 4415 +/- 30' No, water 1987 8.7 UG MA ~~ 55 4680 +/- 30' No, water 2106 8.7 UG M61 ~242 4730 +/- 30' No, water 2129 8.7 UG MB2 ~321 4775 +/- 30' No, water 2149 8.7 UG_MC (faulted out) Fault #1 7449 4850 +/- 100' M.D. SB_NA (faulted to 7449 4850 +/- 30' No, water 2183 8.7 SB NB 7483 4870 +/- 30' No, water 2192 8.7 SB NC ~542 4905 +/- 30' No, water 2207 8.7 SB OA 7651 4970 +/- 30' No, water 2212 8.6 SB OBa 7725 5015 +/- 30' No, water 2232 8.6 SB OBb 7791 5055 +/- 30' No, water 2249 8.6 SB OBc 78~2 5105 +/- 30' No, water 2272 8.6 SB OBd 7945 5150 +/- 30' No, water 2292 8.6 SB OBe 8041 5210 +/- 30' No, water 2318 8.6 SB OBf 8081 5235 +/- 30' No, water 2330 8.6 OBf Base 8144 5275 +/- 30' No, water 2347 8.6 CM2 8~35 5660 +/- 50' no 2519 8.6 CM1 9942 6450 +/- 50' no 2870 8.6 TLBK 10044 6510 +/- 50' no 2897 8.6 THRZ 10062 6520 +/- 50' no 2901 8.6 TKLB 10341 6680 +/- 50' no 2973 8.6 TKC4 10376 6700 +/- 50' Oil 3205 9.2 TKC3E 10402 6715 +/- 50' Oil 3212 9.2 TKC2E 10410 6720 +/- 50' Oil 3215 9.2 TKC1 C 10498 6770 +/- 50' Oil 3239 9.2 TKB/LCU 10532 6790 +/- 50' no 3460 9.8 TKA6 106~2 6870 +/- 50' no 3572 10.0 TD (150' MD below TKB/LCU 10682 6876 +/- 50' no f'_acinn/T~~hinn Prnnram• -------- - -- -- Hole Size - - Csg/ Tbg O.D. WUFt Grade Connection Length (ft) Top MD/TVD RTE ft Btm MDlTVD RTE ft 42" Insulated 20" 215.5 A-53 WLD 108 GL 108/108 12-'/a" 9-5/8" 40 L-80 BTC 4304 GL 4304/3215 8-3/a" 7" 26 L-80 TC-II 6672 GL 6672/4480 8-3/a" 7" 26 L-80 BTC-M 4010 6672/4480 10682/6941 6-'/e" 4-'/z" 12.6 L-80 IBT-M 1303 10226/6679 11529/6760 Tubin 4-~/2" 12.6 13-Cr Vam To 5399 GL 5399/3800 Tubin 3-'/2" 9.2 13-Cr Vam To 4827 5399/3800 10226/6679 S-125 Permit to Drill Page 2 ~ ~ Directional• Directional Plan: Schlumber er Feasibilit Stud P9b and P11 Ref Elev: 65' KOP: 300' MD, be in 1.5/100 build Close A roach Wells: All Wells ass Ma'or Risk Scan, reference anti-collision re ort Surve Pro ram: GYD-GC-SS 900' , MWD 2300' , MWD + IFR + MS 10682' Maximum Hole An le: 100 de rees horizontal section Distance to Nearest Pro ert Line: 14000' from PBU bounda Distance to Nearest Well in Pool: 1900' from S-101 Mud Proaram: 12-'/a" Surface Hole Mud Pro erties Spud - Freshwater Mud Interval Density PV YP PH Funn Vis FL 0-2074' BPRF 8.8-9.2 30-55 50 - 70 9.0 - 9.5 300-400 NC - 8 2074'-4304' SV2 9.2-9.5 30-55 45 - 60 9.0 - 9.5 250-300 < 8.0 8-3/a" Intermediate Hole Mud Pro erties Freshwater Mud (LSND) Interval Densit PV YP PH API Filtrate MBT 4304'-10062' THRZ 8.8-9.2 8-14 18-24 9.0-9.5 4- 7 < 15 10062'-10682' TD 10.7 8-14 18-24 9.0-9.5 4- 7 < 15 6-'/8" Production Hole Mud Pro erties Flo-Pro NT Interval Densit PV YP PH API Filtrate LSRV 10376'-11529' TD 9.5 8-15 22-28 9.0-9.5 4-6 >20000 Survev and Loaaina Proaram: 12-'/a" Hole Section: Surface Gyro until MWD surveys are clean. MWD / LWD: Dir/GR O en Hole: None Cased hole: None 8-3/a" Hole Section: Sample as required by well site Geologist. MAD pass Schrader where slid. MWD / LWD: GR/RES/PWD/Azi-Dens/Neu/Sonic realtime + Stethoscope O en Hole: None Cased Hole: None 6-'/8" Hole Section: Sample in 50' intervals, MAD pass after TD MWD / LWD: GR / Res / Azm Den / Neu / ABI / PWD (All real time) O en Hole: None Cased Hole: None Cement Calculations: Casin Size Surface Casing - 9-5/e" 40 Ib/ft L-80 BTC - Single Stage Basis Lead: Open hole volume + 250% excess in permafrost and 40% excess below permafrost. TOC at surface Tail: O en hole volume + 40% excess + 80' shoe track. TOC 1000' MD above shoe 3304' MD . Fluid Sequence and A Tam Port collar may be located at 1,000' as a contingency for cement to surface Volume: Wash None 3 acer 70 bbls of MudPush II wei hted to 10.3 Lead 507 bbls 641 sks 10.7 Ib/ al Arctic Set Lite cement - 4 Tail 84 bbls (411 sksl 15.8 Ib/pal Class G- 1.15 cufUsk I Temp I BHST = 50° F from SOR I S-125 Permit to Drill Page 3 ~ ~ Casin Size Intermediate Casing - 7" 26 Ib/ft L-80 BTC-M x TC-II - Single Stage Basis Lead: Open hole volume + 30% excess. TOC at 5304' MD, which is 1000' below surface shoe. Tail: O en hoie volume + 30% excess + 80' shoe track. TOC at 9782' MD, which is 900' above shoe. Fluid Sequence and Volume: 1 ~` Sta e Wash None S acer 50 bbl of MUDPUSH XL S acer wei hted to 11.0 Lead 156 bbl 371 sks 12.0 LiteCrete + Latex - 2.36 cu.fUsks Tail 35 bbl (167 sks) 15.8 ppq Class G cement + Latex - 1.16 cu.fUsk _ I Temp I BHST = 148° F from SOR _ I Casin Size 4-Y2", 12.6#, L-80, IBT-M Production Liner Basis: Tail: Based on 1153' of open hole w/ 40% excess + 150' liner lap + 200' excess (4" DP) + 80' shoe track Cement Placement: From shoe to 10226' MD TOL Total Cement Volume: Lead N/A 167 sks) 15.8 at15.8ppq -1.2 Surface and Anti-Collision Issues: • Surface Shut-in Wells: The closest existing surface wells are S-43 (15' away) and S-44 (15' away). • Close Approach Shut-in Wells: All wells have passed the major risk scan. No wells will require subsurface shut-in during drilling operations. Reference the Anti-collision report in the directional plan for a full list of offset well paths. S-125 Permit to Drill Page 4 ~ Well Control ~ Surface hoie will be drilled with a diverter. The intermediate and production hole sections will be drilled with well control equipment consisting of 5000 psi working pressure pipe rams(2), blind/shear rams, and annular preventer. This equipment is capable of handling maximum potential surface pressures. BOP equipment will be tested to 3500 psi. Anticipated surface pressures will not exceed 3000psi, therefore it will not be necessary to have two sets of pipe rams installed at all times. Diverter, BOPE and drilling fluid system schematics on file with the AOGCC. Variance Reauest ~ To avoid the risk of plugging the flow line with large rocks and wood encountered while drilling surface hole, it is requested to drill without a flow paddle for the first portion of the surface hole. After drilling past the larger rocks and wood sections, the flow paddle will be put back in the flow line. To mitigate any risk involved with no flow paddle, the following steps will be taken while the flow paddle is removed from the flow line. Ensure PVT alarms are used and the pit levels are accurately monitored for any pit gain. Visually look down the riser during connections to ensure the well is not flowing. Surface Section • BOPE: • Maximum anticipated BHP: • Maximum surface pressure: • Planned BOP test pressure: • 9-5/8" Casing Test: • Kick Tolerance: • Note: See Variance Request Hydril GK, 21-1/4", 2000 psi 1,454 psi - SV2 (8.7 ppg EMW C«~ 3215' TVD) 1,132 psi - Based on a full column of gas C~ 0.10 psi/ft Function Test 3500 psi surface pressure test NA Intermediate Section Kick Tolerance and Inteqritv Testin • BOPE: Hydril, 13-5/8", 5000 psi • Maximum anticipated BHP: 3,609 psi - TKA6 (10 ppg EMW C~3 6941' TVD) • Maximum surface pressure: 2,915 psi - Based on a full column of gas C«~ 0.10 psi/ft • Planned BOP test pressure: 3500 psi/250 psi Rams and 2,500 psi/250 psi Annular • 7" Casing Test: 3500 psi surface pressure test • Integrity Test - 8-3/4" hole: LOT 20' - 50' from 9-5/8" shoe • Kick Tolerance: 25.4bb1 KT with a 10.7 mud and a 10.8ppg LOT • Planned completion fluid: Estimated 9.5ppg Brine / 6.8 ppg Diesel Production Section Kick Tolerance and Interaritv Testin • BOPE: Hydril, 13-5/8", 5000 psi • Maximum anticipated BHP: 3,274 psi - Kuparuk C(9.2 ppg C 6,845' TVDss) • Maximum surface pressure: 2,590 psi - Based on a full column of gas @ 0.10 psi/ft • Planned BOP test pressure: 3,500 psi/250 psi Rams and 2,500 psi/250 psi Annular • 4~/2" Casing Test: 3,500 psi surface pressure test • Integrity Test - 6-'/e" hole: FIT 20' - 50' from 7" casing window • Kick Tolerance: Infinite with a 9.5 ppg mud with 11.0 ppg LOT • Planned completion fluid: Estimated 9.5 ppg Brine / 6.8 ppg Diesel Disposal • No annular disposal in this well. • Cuttings Handling: Cuttings generated from drilling operations will be hauled to grind and inject at DS-04. • Fluid Handling: Haul all drilling and completion fluids and other Class II wastes to DS-04 for disposal. Haul all Class I wastes to Pad 3 for disposal. S-125 Permit to Drill Page 5 ~ ~ Drilling Hazards and Contingencies POST THIS NOTICE IN THE DOGHOUSE I. Well Control / Reservoir Pressures: The Kuparuk C sands are expected to be pressured C«~ 9.2 ppg EMW. The Kuparuk B/A sands are expected to be pressured C~ 9.8-10 ppg EMW. II. Hydrates and Shallow gas: Gas Hydrates are present at S-pad and have been encountered in wells S-113, S-114, S-106 and S-102 throughout the SV5, SV4 and SV3. Setting casing below the SV3 should keep hydrate exposure from extending past the surface hole. Occasionally hydrates are encountered below the SV1. Recommended practices and precautions for drilling hydrates should be followed in the surface hole. III. Lost Circulation / Breathi~g: Lost circulation is considered low at the fault. Seepage losses could occur in the Schrader O-sands. Keep ECD's < 12 ppg EMW to prevent breathing on this well. Consult the LCM tree if losses are incurred. IV. Kick Tolerance / Integrity Testing: Intermediate Section Kick Tolerance and Integrity Testing • Integrity Test - 8-3/4" hole: LOT 20' - 50' from 9 5/g" shoe • Kick Tolerance: 25.40 bbl KT with a 9.5 ppg mud and a 10.8 ppg LOT Production Section Kick Tolerance and Integrity Testing ~ Integri#y Test - 6-'/8" hole: FIT 20' - 50' from 7" casing window • Kick Tolerance: Infinite with a 9.5 ppg mud with 11.0 ppg LOT V. Stuck Pipe • Stuck pipe has been a problem on two wells on this pad. On S-216 the 9-5/8" surface casing became stuck due to hole geometry. On S-102 stuck drill pipe occurred in the Schrader Bluff Sands, the BHA was not recovered. • 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. • 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 VI. Well Name H2S Level Date of Readin #1 Closest SHL Well H2S Level S-43 15 m 11/26/2006 #2 Closest SHL Well H2S Level S-44 20 m 1/3/2007 #1 Closest BHL Well H25 Level S-101 N/A N/A #2 Closest BHL Well H2S Level S-113B 10 m 3/15/2007 VII. Faults There is a low risk of losses incurred when crossina the fault. Hydrogen Sulfide S Pad is not designated as an H2S site, however Standard Operating Procedures for H2S precautions should be followed at all times. H2S levels across the pad are typically in the 10 ppm range based on the latest samples taken. Formation Where Encounter Fault MD Intersect TVDSS Intersect Est. Throw Throw Direction Uncertaint Fault #1 - U nu Mc 7447 -4850 80 Northeast +/- 100' CONSULT THE S PAD DATA SHEET AND THE WELL PLAN FOR ADDITIONAL INFORMATION S-125 Permit to Drill Page 6 ~ ~ S-125 Drill and Complete Procedure Summary Pre-Rig Work: 1. Install the conductor and weld a landing ring for the FMC Gen 5 Wellhead. 2. If necessary, level the pad and prepare location for rig move. 3. Prepare neighboring wells for the rig move and sim-ops production. Rig Operations: 1. MIRU Nabors 9ES. 2. Nipple up diverter spool and function test diverter. PU 4" DP as required and stand back in derrick. 3. MU 12-1/a" drilling assembly with Dir/GR and directionally drill surface hole to approximately TD with one BHA. The actual surface hole TD will be below the SV2. An intermediate wiper trip to surface will be performed prior to exiting the permafrost. 4. Run and cement the 9 6/8', 40.0-Ib/ft, L-80, BTC surface casing back to surface. A TAM Port Collar should be on location as a contingency; to be run in the casing string only if hole conditions dictate. Bump plug and ensure that floats hold. Test the 9 5/e' casing to 3,500 psi for 30 minutes. 5. ND diverter spool and NU casing / tubing head. NU BOPE and test to 3,500 psi. 6. MU 8-3/a" drilling assembly with Dir/GR/Res/PWD/Azi-Den/Neu/Sonic/Stethoscope (realtime) and RIH to float collar. Circulate and condition cement contaminated mud. Displace over to new 8.8 ppg LSND mud. Drill new formation to 20' below 9 5/8" shoe and perform LOT. 7. Drill to ± 200' above the HRZ, ensure mud is conditioned and weighted to 10.7 ppg and perform short trip as needed. Ensure pre-reservoir meeting is held highlighting kick tolerance and detection prior to entering the HRZ and Kuparuk. 8. Drill ahead to target TD at 10,683' MD, (below top TKA6). Circulate and condition fluid. 9. Collect 15-20 Kup C and A5 sand pressure samples using the SLB StethoScope tool (MDT is contingency). POOH. Make clean-out trip if necessary. 10. Run the 7", 26-Ib/ft, L-80, BTC-M x TC-II production casing and cement in 1 stage. Bring TOC within 1000' of the surface shoe. Bump plug and ensure that float holds. Pressure test casing to 3500 psi for 30 minutes. 11. MU and RIH w/ 7" Whipstock assembly. Hang ~307' of 4.5" space-out tubing below whipstock and set whipstock such that window top is at the top of the Kuparuk C4. 12. Displace the casing with 9.5 ppg Flo-pro NT mud. Mill Window and drill 20' of new formation. Perform FIT test. POOH and LD milling assembly. 13. MU 6-%8' build section BHA with MWD / GR / Res / Den / Neu / ABI / PWD (All real time). Build to horizontal. POOH. 14. MU 6-%" drilling assembly with MWD / GR / Res / Den / Neu / ABI / PWD (All real time). 15. Drill ahead in Kuparuk C sands to TD. MAD pass slide intervals after TD. 16. Run 4-~/z", 12.6-Ib/ft, L-80, IBT-M solid liner. There will be 150' of overlap into the 7" intermediate casing. Cement liner as directed. Set liner top packer. Release from liner and displace well to filtered 9.5 ppg brine and POOH. Test liner to 3500 psi. 17. PU DPC guns and RIH w/ ~800' of 2-~h" Omega PJ 6 spf, 60° phasing perf guns. Tag PBTD for depth control. 18. Run 4-~h", 12.6-Ib/ft, 13-Cr, Vam Top x 3-'/2" 9.2-Ib/ft, L-80 x 13-Cr, Vam Top completion w/ Halliburton pressure gauge just above packer. RILD. Set packer and test tubing and annulus to 3,500 psi for 30 minutes. 19. Shear DCK valve. Install TWC. 20. Nipple down the BOPE. Nipple up and test the double master valve to 5,000 psi. Remove TWC. 21. RU hot oil truck. Freeze protect the well. Install BPV in tubing hanger. Install a VR plug in the 7"x 4-'/z" annulus valve and secure the well. Ensure that IA/OA are both protected with two barriers. 22. Rig down and move off. Post-Rig Work: 1. Install tree with LEO valve. 2. R/U Slickline and pull ball and rod / RHC. 3. Replace the DCK shear valve with a dummy GLV. 4. Pull dummy valves and replace with gas lift valves. 5. Pull VR plug. S-125 Permit to Drill Page 7 .TREE = 41 l18" WELLHEAD = FMC AcnwroR = ~~wa Ke. ~EV = BF. E1EV = KOP = 300' Max Angle = 100 ~ 10919' Datum MD = Datum ND = S -125 20" CONDUCTOR 108' I9-5/8" CSG, 40I~, L-80 BTC, ID = 8.835" H 4304' 4-1l2" TBG, 12.6#, 13-Cr, VT, .0152 bpf, ID = 3.958" 5100' 7" CSG, 26#, L-80 TCII, .0383 bpf, ID = 6.276" 8743' Minimum ID = 2.813" ~ xxxx' 3-1/2" XD DURO SLIDING SLEEVE 3-1/2" TBG, 9.2#, 13CR-80, .0087 bpf, ID = 2.992" ~~ 10226~ 7" BKR WHIPSTOCK 10376' ' T' HES ¢SV 10396' 7" CSG, 26#, L-80, BTGM, .0383 bpf, ID = 6.27 10682' PERFORAl10N SUMMARY REF LOG: LWD ON ANGLE AT TOP PERF: Note: Refer to FYoduction DB for historical perf data SIZE SPF IM~1/AL Opn/Sqz LlATE 2-1/2" & O ~ SAFETYNOTES: ***CHROMETBG"•* tbd 9-5/8" TAM PORT COLLAR 2600' 4-1/2" HES X NIP, ID = 3.813" 5100' 4-1l2" X 3-1/2" XO, ID = 2.992" 5T MD TVD DEV TYPE VLV LATCH PORT DATE 4 3800 KBG-2 3 5000 KBG2 2 5600 KBG2 1 6600 KBG2 / 10116' 3-1/2" XD DURO SLIDING SLV, ID = 2.813" _ 10126' 3-1/2" HES X NIP, ID = 2.813" '-- 10136' 3-1/2" SYMPHONY GAUGE CARRIER 10166' 7" X 4-1/2" BKR S-3 PKR, ID = 3.875" 10186' 3-1/2" HES X NIP, ID = 2.813" 10206' 3-1l2" HES X NIP, ID = 2.813" \ 10226' 7" X 5" BKR ZXP PKR & LNR HGR w/TIEBACK SLV, ID = 4.410" 10226' -~4-1/2" WLEG, ID = 4.000" XXX' 7" MARKER JT W! RA TAG MILLED OUT WINDOW (7") ~ 10376-10359 '~~ 7" MA RKER JT W/ RA TAG PBTD 11449' 4-1/2" INR, 12.6 #, L-80 IBT-M, ID = 3.958" 11529' DATE REV BY CONMENTS OIATE REV BY CONMENTS AURORA UNff 04J30/07 BJP Proposed Compietion WELI: S-125 PERA1Ki' No: API No: SEC TVM RGE NSL FEL BP 6cpioration (Alaska) bp Schlumberger S-125PB1 (P9b) Proposal Report Date: April 26, 2007 Survey I DLS Computation Method: Minimum Curvature / Lnbinski Client: BP ExploraUon Alaska Vertical Section Azimuth: 256.170° Field: Structure 1 Slot: Prudhoe Bay Unit - WOA S-PAD / S-12515' N 44 Vertical Section Origin: N 0.000 ft, E 0.000 ft d~ ND Reference Datum: Rotary Table ~~ Well: Plan S-125 ~' ~~ ~~ ND Reference Elevation: 65.00 ft relative to MSL Borehole: Plan S-125P61 ~ ~ ~~ Sea Bed 1 Ground Level Elevation: 36.50 ft relative to MSL UWIIAPI#: 50029 Magnetic Declination: 23.709° Survey Name / Date: S-125PB1 (P9b) I April 26, 2007 Total Field Strength: 57652.270 nT Tort 1 AHD 1 DDI 1 ERD ratio: 111.t 18° / 7552.43 ft/ 6.111 / 1.088 Magnetie Dip: 80.949° Grid Coordinate System: NAD27 Alaska State Planes, Zone 04, US Feet Declination Date: August 02, 2007 Location Latllong: N 70.35518620, W 149.03417050 Magnetic Declination Model: BGGM 2006 Location Grid NIE YIX: N 5980430.000 ftUS, E 618930.000 ftUS North Reference: True North Grid Convergence Angle: +0.90962296° Total Con Mag North -> True North: +z3.709° Grid Scale Factor: 0.99991607 Local Coordinates Referenced To: Well Head Comments Measured Inclination Azimuth Sub-Sea ND ND Vertical NS EW Gravity DLS Directional Northing Easting Latitude Longitude Depth Section 7001 Face Difficulty ft de de ft ft R ft ft de de 1700 R Index ftUS ftUS Klt U.UU U.UU ZyU.UU -6b.UU U.UU U.W U.UU U.UU --- U.UV U.UU 5}l25U43U,UU U"It5`J3U.UU IV/U.305~Ii5bLU VV-14}i.U347/VbV KOP Crv 1.5/100 300.00 0.00 290.00 235.00 300.00 0.00 0.00 0.00 HS 0.00 0.00 5980430.00 618930.00 N 70.35518620 W 149.03417050 400.00 1.50 290.00 334.99 399.99 1.09 0.45 -1.23 HS 1.50 0.29 5980430.43 618928.76 N 70.35518742 W 149.03418048 G1 405.01 1.58 290.00 340.00 405.00 1.20 0.49 -1.36 HS 1.50 0.36 5980430.47 618928.64 N 70.35518755 W 149.03418151 500.00 3.00 290.00 434.91 499.91 4.35 1.79 -4.92 HS 1.50 1.20 5950431.71 618925.05 N 70.35519109 W 149.0342~044 Crv 2.5/100 550.00 3.75 290.00 484.82 549.82 6.79 2.80 -7.69 34.63L 1.50 1.49 5980432.67 618922.27 N 70.35519384 W 149.03423290 600.00 4.83 281.53 534.68 599.68 10.05 3.78 -11.28 26.19L 2.50 1.78 5980433.60 618918.66 N 70.35519652 W 149.03426212 700.00 7.16 272.65 634.13 699.13 19.84 4.91 -21.64 17.35L 2.50 2.22 5980434.56 618908.29 N 70.35519961 W 149.03434619 800.00 9.57 268.16 733.06 798.06 33.95 4.93 -36.18 12.91 L 2.50 2.57 5980434.35 618893.75 N 70.35519966 W 149.03446425 900.00 12.02 265.48 831.28 896.28 52.37 3.84 -54.88 10.28L 2.50 2.84 5980432.97 618875.07 N 70.35519669 W 149.03461608 1000.00 14.49 263.70 928.61 993.61 75.05 1.65 -77.70 8.54L 2.50 3.07 5980430.41 618852.29 N 70.35519070 W 149.0348014'I~ 1100.00 16.97 262.43 1024.86 1089.86 101.97 -1.65 -104.60 7.32L 2.50 3.27 5980426.69 618825.44 N 70.35518169 W 149.03501987 1200.00 19.45 261.47 1119.84 1184.84 133.05 -6.04 -135.54 6.41 L 2.50 3.44 5980421.81 618794.59 N 70.35516969 W 149.03527104 1300.00 21.94 260.72 1213.38 1278.38 168.25 -11,52 -170.44 5.71L 2.50 3.60 5980415.77 618759.78 N 70.35515472 W 149.03555446 1400.00 24.42 260.12 1305.30 1370.30 207.51 -18.08 -209.25 5.16L 2.50 3.73 5980408.60 618721.08 N 70.35513680 W 149.03586957 , Crv 2.5/100 1423.12 25.00 260.00 1326.30 1391.30 217.15 -19.75 -218.77 4.OOR 2.50 3.76 5980406.78 618711.59 N 70.35513224 W 149.03594687 1500.00 26.92 260.30 1395.43 1460.43 250.72 -25.50 -251.93 3.73R 2.50 3.86 5980400.50 618678.53 N 70.35511651 W 149.03621609 1600.00 29.41 260.63 1483.58 1548.58 297.78 -33.32 -298.47 3.44R 2.50 3.97 5980391.95 618632.12 N 70.35509516 W 149.03659404 1700.00 31.91 260.91 1569.59 1634.59 348.61 -41.49 -348.80 3.20R 2.50 4.08 5980382.98 618581.93 N 70.35507282 W 149.03700272 SV6 1700.48 31.92 260.91 1570.00 1635.00 348.86 -41.53 -349.05 3.20R 2.50 4.08 5980382.93 618581.68 N 70.35507271 W 149.03700475 1800.00 34.40 261.16 1653.30 1718.30 403.10 -50.01 -402.82 2.99R 2.50 4.17 5980373.60 618528.05 N 70.35504954 W 149.03744136 1900.00 36.90 261.38 1734.55 1799.55 461.15 -58.86 -460.43 2.81 R 2.50 4.27 5980363.85 618470.60 N 70.35502536 W 149.03790912 I 2000.00 39.40 261.57 1813.19 1878.19 522.66 -68.02 -521.52 2.66R 2.50 4.35 5980353.72 618409.67 N 70.35500034 W 149.03840511 End Crv 2067.89 41.09 261.69 1865.00 1930.00 566.32 -74.40 -564.91 - 2.50 4.41 5980346.65 618366.39 N 70.35498289 W 149.03875744 WeIlDesign Ver SP 2.1 Bld( doc40x_100 ) S-125 15' N 44\Plan S-125\Plan S-125P81\S-125PB1 (P9b) Generated 4/26/2007 3:50 PM Page 1 of 3 Comments ~easured Inclination Azimuth Sub-Sea TVD ND Vertical NS EW ~~~~ DLS Directional Northing Easting Latitude Longitude Depth Section Tool Face Difficuky ft de de ft ft R ft ft de de 1100 ft Index kUS ftUS ~ uaacrc»~i cvi~..iG Y/.VJ GVI.V.y 10/V.VV I~JJ.VV 2134.23 2200.00 2300.00 2378.19 2400.00 2500.00 2515.09 2600.00 2700.00 2800.00 2800.38 2862.28 3583.18 3835.96 4304.07 41.09 261 .69 1915 .00 1980.00 42.74 261 .85 1963 .94 2028.94 45.23 262 .07 2035 .89 2100.89 47.18 262. 24 2090. 00 2155.00 47.73 262 .28 2104 .75 2169.75 50.22 262 .47 2170 .38 2235.38 50.60 262. 50 2180. 00 2245.00 52.72 262. 65 2232. 67 2297.67 55.21 262. 82 2291 .49 2356.49 57.71 262. 98 2346 .74 2411.74 57.72 262. 98 2346 .94 2411.94 57.72 262. 98 2380. 00 2445.00 57.72 262. 98 2765. 00 2830.00 57.72 262. 98 2900. 00 2965.00 57.72 262. 98 3150. 00 3215.00 4397.69 5015.60 5090.50 5670.96 6672.72 6705.90 6800.00 6900.00 7000.00 7100.00 7155.12 7200.00 7242.86 7300.00 7321.01 7400.00 7449.62 7449.64 7483.59 7500.00 7542.69 7600.00 7651.38 7651.40 7700.00 57.72 57.72 57.72 57.72 57.72 57.72 57.25 56.75 56.25 55.75 55.48 55.25 55.04 54.75 54.65 262.98 262.98 262.98 262.98 262.98 262.98 262.94 262.91 262.88 262.84 262.83 262.81 262.80 262.78 262.77 J/V.VV 609.72 653.45 722.53 778.66 794.64 869.63 881.99 947.36 1027.69 1110.47 1110.78 1162.75 1767.93 1980.14 2373.12 3200.00 3265.00 2451.71 3530.00 3595.00 2970.44 3570.00 3635.00 3033.32 3880.00 3945.00 3520.61 4415.00 4480.00 4361.57 4432.72 4497.72 4483.30 4548.30 4537.76 4602.76 4592.96 4657.96 4648.87 4713.87 4680.00 4745.00 4705.51 4770.51 4730.00 4795.00 4762.86 4827.86 4775.00 4840.00 4389.43 4468.22 4551.51 4634.32 4716.66 4761.84 4798.52 4833:45 4879.89 4896.93 -/J.VJ 'JOy.LL -80.70 -608.06 -86.99 -651.54 -96.70 -720.30 -104.40 -776.21 -106.56 -792.13 -116.57 -866.90 -118.09 -878.43 -126.69 -944.46 -136.91 -1024.67 -147.22 -1107.38 -14726 -1107.69 -153.66 -1159.64 -228.19 -1764.54 -254.33 -1976.65 -302.73 -2369.44 -312.41 -2448.00 -376.29 -2966.49 -384.04 -3029.34 -444.05 -3516.40 -547.62 -4356.98 -551.05 -4384.82 -560.78 -4463.57 -571.10 -4546.80 -581.42 -4629.55 -591.72 -4711.81 -597.39 -4756.95 -602.01 -4793.59 -606.42 -4828.48 -612.29 -4874.56 -614.45 -4891.87 54.25 262.74 4820.92 4885.92 4960.77 -622.55 -4955.62 54.01 262.72 4850.00 4915.00 5000.72 -627.64 -4995.51 54.01 262.72 4850.01 4915.01 5000.73 -627.64 -4995.53 53.84 262.71 4870.00 4935.00 5027.99 -631.12 -5022.74 53.76 262.70 4879.70 4944.70 5041.15 -632.80 -5035.88 53.54 262.69 4905.00 4970.00 5075.31 -637.17 -5069.98 53.26 262,67 4939.17 5004.17 5121.02 -643.03 -5115.62 53.00 262.65 4970.00 5035.00 5161.86 -648.29 -5156.38 53.00 262.65 4970.01 5035.01 5161.88 -648.29 -5156.40 52.76 262.63 4999.34 5064.34 5200.38 -653.25 -5194.83 --- V.UU 4.4~I .7Y6V34.7.y.7 3.80R 3.68R 3.52R 3.40R 3.37R 3.25R 3.23R 3.14R 3.04R 2.95R 176.84L 176.83L 176.81 L 176.79L 176.77L 176.76L 176.75L 176.74L 176.73L 176J3L 176.71 L HS 176JOL 176.69L 176.69L 0.00 2.50 2.50 2.50 2.50 2.50 2.50 2.50 2.50 2.50 2.50 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 4.44 5980339.66 4.49 5980332.68 4.56 5980321.89 4.62 5980313.30 4.63 5980310.88 4.70 5980299.70 4.71 5980297.99 4.76 5980288.34 4.82 5980276.85 4.88 5980265.23 4.88 5980265.19 4.90 5980257.97 5.12 5980173.85 5.18 5980144.35 5.27 5980089.73 5.29 5980078.80 5.39 5980006.70 5.40 5979997.96 5.47 5979930.23 5.58 5979813.33 5.59 5979809.46 5.60 5979798.49 5.61 5979786.84 5.62 5979775.22 5.64 5979763.61 5.64 5979757.22 5.65 5979752.02 5.65 5979747.07 5.66 5979740.46 5.66 5979738.03 5.67 5979728.92 5.68 5979723.20 5.68 5979723.19 5.68 5979719.28 5.68 5979717.39 176.68L 0.50 5.69 5979712.48 176.67L 0.50 5.69 5979705.90 HS 0.50 5.70 5979700.00 176.31 L 0.50 5J0 5979700.00 176.30L 0.50 5.70 5979694.42 O/OJOL.U`J /V /V.J~4`Jtl770 VV 74`J.U3tl/`JL4tf 618323.35 N 70.35496565 W 149.03910781 618279.98 N 70.35494846 W 149.03946086 618211.39 N 70.35492193 W 149.04001914 618155.61 N 70.35490088 W 149.04047311 618139.73 N 70.35489496 W 149.04060238 618065.14 N 70.35486761 W 149.04120947 618053.63 N 70.35486345 W 149.04130309 617987.75 N 70.35483993 W 149.04183926 617907.72 N 70.35481197 W 149.04249054 ~ 617825.19 N 70.35478379 W 149.04316207 617824.88 N 70.35478368 W 149.04316463 617773.05 N 70.35476617 W 149.04358642 617169.45 N 70.35456223 W 149.04849791 616957.81 N 70.35449069 W 149.05022009 616565.86 N 70.35435816 W 149.05340929 616487.47 N 70.35433164 W 149.05404713 615970.11 N 70.35415660 W 149.05825680 615907.40 N 70.35413538 W 149.05876706 615421.39 N 70.35397084 W 149.06272153 614582.64 N 70.35368668 W 149.06954603 614554.86 N 70.35367727 W 149.06977204 614476.27 N 70.35365057 W 149.07041142 614393.23 N 70.35362223 W 149.07108713 614310.66 N 70.35359391 W 149.07175894 614228.58 N 70.35356562 W 149.07242680 614183.54 N 70.35355005 W 149.07279320 614146.99 N 70.35353737 W 149.0730906~ 614112.17 N 70.35352527 W 149.07337392 614065.90 N 70.35350915 W 149.07375046 614048.92 N 70.35350323 W 149.07388855 613985.31 N 70.35348097 W 149.07440616 613945.51 N 70.35346700 W 149.07473000 613945.50 N 70.35346699 W 149.07473011 613918.34 N 70.35345744 W 149.07495105 613905.23 N 70.35345282 W 149.07505771 613871.21 N 70.35344082 W 149.07533459 613825.68 N 70.35342472 W 149.07570506 613785.00 N 70.35341029 W 149.07603604 613784.99 N 70.35341029 W 149.07603614 613746.64 N 70.35339665 W 149.07634816 WeIlDesign Ver SP 2.1 Bld( doc40x_100 ) S-125 15' N 44\Plan S-1251PIan S-125P61\S-125PB1 (P9b) Generated 4/26l2007 3:50 PM Page 2 of 3 Comments Measured ~nclination Azimuth Sub-Sea ND ND Vertical NS EW ~~~~~ DLS Directional Northing Easting Latitude Longitude Depth Section Tool Face Difficulty ft de de ft ft ft - ft - -- ft -- - de - -- de 1700 ft - -- Index - - ftUS ------ - ftUS - ---- - -- ------ - --- -- j voa iic~.o~r OLAJ coc.oc ~v7a.vv ~vav.W ~[[U.OU -OOO.tfy -D[70.Y7 7/O.YyL U.OV 5./1 5y/y0`J7.40 b7J/Zb.J7 IV/U.3bJJtf'J47 W74y.U/6b736"L OBb 7791.49 52.30 262.59 5055.00 5120.00 5272.54 -662.59 -5266.84 176.27L 0.50 5.71 59796B3.95 613674.79 N 70.35337101 W 149.07693277 7800.00 52.26 262.59 5060.21 5125.21 5279.23 -663.46 -5273.51 176.27L 0.50 5.71 5979682.97 613668.14 N 70.35336862 W 149.07698695 OBc 7872.88 51.89 262.56 5105.00 5170.00 5336.36 -670.89 -5330.52 176.25L 0.50 5.72 5979674.64 613611.25 N 70.35334821 W 149.07744979 7900.00 51.76 262.55 5121.76 5186.76 5357.54 -673.65 -5351.66 176.25L 0.50 5.72 5979671.54 613590.16 N 70.35334063 W 149.07762139 OBd 7945.51 51.53 262.53 5150.00 5215.00 5393.01 -678.28 -5387.05 176.23L 0.50 5.73 5979666.35 613554.86 N 70.35332790 W 149.07790868 8000.00 51.26 262.51 5184.00 5249.00 5435.33 -683.83 -5429.27 176.22L 0.50 5.73 5979660.13 613512.74 N 70.35331266 W 149.07825143 OBe 8041.46 51.05 262.49 5210.00 5275.00 5467.43 -688.05 -5461.29 176.21L 0.50 5.74 5979655.41 613480.79 N70.35330108 W149.07851135 OBf 8081.15 50.86 262.47 5235.00 5300.00 5498.07 -692.OB -5491.84 176.20L 0.50 5.74 5979650.89 613450.31 N 70.35329000 W 149.07875942 8100.00 50.76 262.46 5246.91 5311.91 5512.59 -694.00 -5506.33 176.19L 0.50 5.74 5979648.75 613435.85 N 70.35328474 W 149.07887702 OBf Base 8144.30 50.54 262.44 5275.00 5340.00 5546.64 -698.49 -5540.29 176.18L 0.50 5.75 5979643.71 613401.97 N 70.35327238 W 149.07915271 ~ 8200.00 50.26 262.42 5310.50 5375.50 5589.30 -704.15 -5582.83 176.17L 0.50 5.75 5979637.38 613359.53 N 70.35325685 W 149.07949812 8300.00 49.76 262.38 5374.77 5439.77 5665.47 -714.28 -5658.78 176.14L 0.50 5.76 5979626.04 613283.76 N 70,35322901 W 149.08011467 8400.00 49.27 262.33 5439.69 5504.69 5741.08 -724.40 -5734.16 176.11 L 0.50 5.77 5979614.73 613208.55 N 70.35320121 W 149.08072663 End Crv 8459.41 48.97 262.31 5478.57 5543.57 5785.74 -730.40 -5778.67 --- 0.50 5.78 5979608.02 613164.15 N 70.35318471 W 149.08108798 CM2 8735.77 48.97 262.31 5660.00 5725.00 5993.02 -758.32 -5985.27 --- 0.00 5.79 5979576.83 612958.03 N 70.35310801 W 149.08276521 Crv 4/100 8956.04 48.97 262.31 5804.60 5869.60 6158.23 -780.56 -6149.94 101.15L 0.00 5.80 5979551.98 612793.76 N 70,35304687 W 149.08410197 9000.00 48.65 260.01 5833.55 5898.55 6191.18 -785.65 -6182.62 99.64L 4.00 5.82 5979546.38 612761.16 N 70.35303291 W 149.08436729 9100.00 48.10 254.71 5900.00 5965.00 6265.87 -801.98 -6255.51 96.12L 4.00 5.85 5979528.89 612688.54 N 70.35298811 W 149.08495901 9200.00 47.80 249.33 5967.00 6032.00 6339.88 -824.88 -6326.10 92.52L 4.00 5.87 5979504.87 612618.34 N 70.35292539 W 149.08553194 9300.00 47.75 243.93 603423 6099.23 6412.86 -854.23 -6394.03 88.88L 4.00 5.90 5979474.45 612550.88 N 70.35284506 W 149.08608328 9400.00 47.96 238.54 6101.36 6166.36 6484.45 -889.89 -6458.98 85.27L 4.00 5.93 5979437.77 612486.52 N 70.35274749 W 149.08661034 9500.00 48.41 233.21 6168.06 6233.06 6554.30 -931.68 -6520.63 81.71L 4.00 5.95 5979395.01 612425.54 N 70.35263318 W 149.087i1056 9600.00 49.11 227.97 6234.01 6299.01 6622.07 -979.40 -6578.67 78.25L 4.00 5.98 5979346.38 612368.27 N 70.35250267 W 149.08758149 9700.00 50.04 222.86 6298.88 6363.88 6687.43 -1032.82 -6632.84 74.94L 4.00 6.00 5979292.11 612314.96 N 70.35235660 W 149.08802086 9800.00 51.18 217.90 6362.37 6427.37 6750.07 -1091.68 -6682.85 71.79L 4.00 6.02 5979232.47 612265.89 N 70.35219569 W 149.08842650 9900.00 52.53 213.11 6424.15 6489.15 6809.67 -1155.68 -6728.48 68.83L 4.00 6.04 5979167.75 612221.29 N 70.35202072 W 149.08879645 CM1 9942.80 53.17 211.11 6450.00 6515.00 6834.18 -1184.57 -6746:61 67.62L 4.00 6.05 5979138.58 612203.63 N 70.35194175 W 149.08894341 10000.00 54.06 208.50 6483.94 6548.94 6865.95 -1224.53 -6769.49 66.07L 4.00 6.07 5979098.27 612181.38 N 70.35183254 W 149.0891289 ~ TLBK 10044.81 54.81 206.50 6510.00 6575.00 6890.02 -1256.86 -6786.32 64.91L 4.00 6.08 5979065.68 612165.07 N70.35174417 W 149.08926527 End Crv 10056.04 55.00 206.00 6516.46 6581.46 6895.93 -1265.10 -6790.38 --- 4.00 6.08 5979057.38 612161.14 N 70.35172165 W 149.08929819 THRZ 10062.22 55.00 206.00 6520.00 6585.00 6899.18 -1269.65 -6792.60 -- 0.00 6.08 5979052.79 612158.99 N 70.35170922 W 149.08931618 TKLB 10341.17 55.00 206.00 6680.00 8745.00 7045.54 -1475.03 -6892.77 -- 0.00 6.09 5978845.87 612062.11 N 70.35114789 W 149.09012787 S-125PB1 Tgt 10376.04 55.00 206.00 6700.00 6765.00 7063.83 -1500.70 -6905.29 --- 0.00 6.09 5978820.00 612050.00 N 70.35107773 W 149.09022933 TKC4 10376.05 55.00 206.00 6700.01 6765.01 7063.84 -1500.71 -6905.30 --- 0.00 6.09 5978819.99 612049.99 N 70.35107769 W 149.09022937 TKC3E 10402.19 55.00 206.OQ 6715.00 6780.00 7077.55 -1519.95 -6914.68 -- 0.00 6.10 5978800.61 612040.91 N 70.35102510 W 149.09030542 TKC2E 10410.91 55.00 206.00 6720.00 6785.00 7082.13 -1526.37 -6917.81 -- 0.00 6.10 5978794.14 612037.88 N 70.35100756 W 149.09033078 TKC1C 10498.08 55.00 206.00 6770.00 6835.00 7127.86 -1590.55 -6949.11 --- 0.00 6.10 5978729.47 612007.61 N 70.35083215 W 149.09058442 10532.95 55.00 206.00 6790.00 6855.00 7146.16 -1616.22 -6961.64 -- 0.00 6.10 5978703.61 611995.50 N 70.35076198 W 149.09068588 TKB/LCU 10532.97 55.00 206.00 6790.01 6855.01 7146.17 -1616.24 -6961.64 -- 0.00 6.10 5978703.60 61?995.49 N70.35076195 W 149.09068593 TKA6 10672.42 55.00 206.00 6870.00 6935.00 7219.34 -1718.91 -7011.72 --- 0.00 6.11 5978600.15 611947.05 N 70.35048132 W 149.09109169 TD / 7" Csg Pt 10682.95 55.00 206.00 6876.04 6941.04 7224.86 -1726.66 -7015.50 --- 0.00 6.11 5978592.34 611943.40 N 70.35046014 W 149.09112231 WeilDesign Ver SP 2.1 Bid( docAOx_100 ) S-125 15' N 44\Plan S-125\Plan S-125P61\S-125P61 (P9b) Generated 4/26/2007 3:50 PM Page 3 of 3 bp ~ Schlumberger WE~~ S-125 (P9b) ~~~~~ prudhoe Bay Unit - WOA s'~~~cTURE S-PAD AlagneicParame~ers SurtaceLw.a~an Nf~~1/ IuP~~i~e~.ZuiieJ: USfeet Mscellaneous Motlel1 BGGM200fi Diy WIWS' ~ale Auyus~~32W-1 lni ]02~t8.e]0 Mxiy .~ G~iJf,im. ~5056129fi' Sb~: St2515'NU MIRei RWbyTaEieltiSL~Y~tr~+eMSLr Alag0.~ ~i3]C9' FS 165])~~T Lon. d923J"~~ E~at~ng 69B ]affIM1115, SWOFac~ u99991fi0fi]fi Plan~. S1]SPB11P9~i SrryDa~e NVM~fi 200/ 0 1200 2400 3600 4800 6000 7200 0 1200 2400 x 0 0 N C ~~ 3600 a~ m U ~ ~ ~ 4800 6000 rnase ; EndCrv crv a _.._.._.._ _.._.._.._.._.._.._.._ ._.._.._.._.._.._.._.._ _.._.._.._.._.._.._.._.._ _.._.._.._.._.._.._.._. _.._.._.._.._.._.._.._ .2._ .._.., ~.. ~.. ~.. ~.. ~.. ~.. ~.. ~.. ~..~.. ~..~.. ~.~.. ~.. ~.. ~..~.. ~..~.. ~.. ~.~ ~.. ~.. ~.. ~.. ~.. ~.. ~.. ~.. ~ i. ~.. ~.. ~.. ~.. ~.. ~.. ~.. ~..~..~..~..~..~.. ~..~.. ~.. ~.. ~.. ~.. ~.. ~.. ~.., .......................~......~..~....e..............~..~..~....~...~.....................~..........~...........~..a.....~..~..~.....~........~...~~ ~~~ ~.....~ 0 1200 2400 3600 ._.. ._.._.._.._.._ 4800 ~.~~.~~:~~.~~.~~.~~.~~.~~ = = :;: - ~:>;: ~ ~: ~ ~: ~ ~: ~ ~: ~ ~: ~ ~:>; .........:........................ 6~~~ ~ nd Crv _..~.. i12,S2S~TOL.. ..~ ..~..~~~~..~ I iltll/il~il~ll ii~~~ t . KA6 .~..~•,~ ~9b) 5-125PB1 0 1200 2400 3600 4800 6000 Vertical Section (ft) Azim = 256.17°, Scale = 1(in):1200(ft) Origin = 0 N/-S, 0 E/-V 7200 ~ ~ bp Schlumberger weu vie~u srnucrur+e S-125PB1 (P9b) Prudhoe Bay Unit - WOA S-PAD Magneik Paranie~ues Surlaca Lc:atun NPD2I Alaska Slala Plarss. 2one 04. US Feei MiscNlannous Matlel-. B~C~.M1I]Wfi Oip. b(1~9` Da~e sio2.200> . N/031t8.6)0 Ming 59BN]O(IOIIUS GnEC~nv ~0.9096219fi" SWI 5-125'SNC4 NUFvI ~iaryTaGle~fiS.OJflaWVeMSL~ Mag[le~_ ~23/U9' FS 5]65ZJnT W1493]0~1 Easung fit8930WI1U5 Swk~azt~.0.9999~fiafi]6 P4~n 5-1Z5PB1~P9b~ nyp,n.• Aynl]6,2fI0] -6400 -5600 -4800 -4000 -3200 -2400 -1600 -800 0 800 0 -800 800 0 -800 ~ ~ 1600 -2400 'B7 (P96) -1600 -24~~ -6400 -5600 -4800 -4000 -3200 -2400 -1600 -800 0 «< W Scale = 1(in):800(ft) E »> ~ ~ BP Alaska Anticollision Report ~ _ _. _ - _ - -- -- Company: BP Amoco - , , _ _ -_ - _ DaCe: 4l26/2007 Time: 15:54;50 Pagec' 1 Field; Prudhae Bay Reference Site: ' PB S Pad Co-ordinate(NE) Reference; WeIL' Plan S-125, True Notth Reference Well: Plan S-125 Vertical (TVD) Reference: S-125 Plan 65A Reference Wellpath: Pfan S-125PB1 --- -~_--- --- ~ -- -- - - -- --- -= _- . _ _ _ Db: Oracle - - --- - J GLOBAL SCAN APPLIED: All wellpaths within 200'+ 100/1000 of reference - There are LM~I~Raxells in thisRtii~ipal Plan & PLANNED PROGRAM ', Interpolation Method: MD IntervaL• 5.00 ft Error ModeL• ISCWSA Ellipse ', ' Depth Range: 28.50 to 10682.95 ft Scan Method: Trav Cylinder North ', ' Maximum Radius:10000.00 ft Error Surface: Ellipse + Casing ' Survey Program for Definitive Wellpath ~I Date: 5/31/2006 Validated: No Versioo: 5 I Planned From To Survey Toolcode Tool Name ft ft ~ I 28.50 900.00 Planned: Plan #9 V1 GYD-GGSS Gyrodata gyro single shots '~ ~ I, 900.00 2300.00 Planned: Plan #9 V1 MWD MWD - Standard ~i 900.00 4240.00 Planned: Plan #9 V1 MWD+IFR+MS MWD + IFR + Multi Station ~i '~, 4240.00 10682.95 Planned: Plan #9 V1 MWD+IFR+MS MWD + IFR + Multi Station i Casing Points --- - - , - ` MD TVD Diameter " Hole Size Name , ~ - -; ' ft ft _ --- ---- <' in in _ -- -- - - -- - -- _~~ ~_~__ __ - ': . . . : . _ --- _.:..~_ ~. ; _ __~ . : -~- -. I 4304.07 3215.00 - -- _ 9.625 12.250 9 5/8" ----- _ _ . _ . - I 110682.95 6941.04 7.000 8.750 7" Summary _----------- -- OffsetWellpath -- -- '------->` Reference ' Offsef Ctr-Ctr No-Go Allowable ' Site Weli Wellpath MD ' Mb Distance Area DeviaNon Warniqg; ~_: _ _- ~_ : _ - ft ft ft - ft _ - ft; -- - 1 - _ _-- - _ _ - ~ _. PB S Pad . _ _ _ Plan S-125 . _._ _ _ - Plan S-125 Alt 1 V1 PI _. _ ~ 9150.00 9150.00 - _ 0.87 _ 236.02 - -235.15 _ 1- - _ - - FAIL. Ma'or Risk I PB S Pad Plan S-125 Plan S-125 Alt 2 V1 PI 3905.00 3905.00 022 104.30 -104.09 FAIL: Major Risk ', PB S Pad Plan S-125 Plan S-125 V8 Plan: PI 9150.00 9150.00 0.87 284.63 -283.76 FAIL: Major Risk ! ' PB S Pad Plan S-125 Plan S-125PB2 Alt 2 V1 3905.00 3905.00 0.22 104.30 -104.09 FAIL: Major Risk ' I PB S Pad Plan S-126 Plan S-126 V7 Plan: PI 3476.90 3230.00 1067.54 99.67 967.87 Pass: Major Risk ~~~ PB S Pad Plan S-214 Plan S-214 V1 Plan: S- 1040.26 1050.00 89.40 17.34 72.05 Pass: Major Risk ' ', PB S Pad S-100 S-100 V10 453.12 450.00 213.40 8.00 205.41 Pass: Major Risk ' I PB S Pad S-101 S-101 V3 949.82 955.00 169.34 17.50 151.84 Pass: Major Risk ! ' PB S Pad S-101 S-101 PB1 V9 949.82 955.00 169.34 17.55 151.79 Pass: Major Risk I PB S Pad S-102 S-102 V11 245J9 245.00 226.83 474 222.09 Pass: Major Risk , ' PB S Pad S-102 S-102L1 V5 245.79 245.00 226.83 474 222.09 Pass: Major Risk I PB S Pad S-102 S-102L1 P61 V7 24579 245.00 226.83 4.69 222.14 Pass: Major Risk ~ ', PB S Pad S-102 S-102PB1 V14 245J9 245.00 226.83 4J4 222.09 Pass: Major Risk I ', PB S Pad S-109 S-109 V8 637.82 640.00 235.34 11.50 223.84 Pass: Major Risk j I PB S Pad S-109 S-109PB1 V2 637.82 640.00 235.34 11.50 223.84 Pass: Major Risk I , PB S Pad S-110 S-110 V18 55271 555.00 249.96 11.03 238.93 Pass: Major Risk I !, PB S Pad S-112 S-112 V20 511.20 515.00 101.92 10.10 91.82 Pass: Major Risk ' , PB S Pad S-115 S-115 ST V1 Plan: Plan 737.74 740.00 167.12 12.37 154.75 Pass: Major Risk I PB S Pad S-115 S-115 V7 73774 740.00 167.12 12.28 154.84 Pass: Major Risk ! , PB S Pad S-116 Plan S-116L1 V1 Plan: 745.03 745.00 38.71 12.87 25.84 Pass: Major Risk ~ PB S Pad S-116 S-116 V6 745.03 745.00 38.71 12.87 25.84 I Pass: Major Risk , ; PB S Pad S-117 S-117 V4 791.42 795.00 145.43 14.32 131.12 Pass: Major Risk ~ PB S Pad S-118 S-118 V5 556.09 555.00 59.31 9.60 49.71 Pass: Major Risk ~I PB S Pad S-119 S-119 V7 431.19 425.00 272.43 8.13 264.30 Pass: Major Risk I PB S Pad S-120 S-120 V4 652.31 650.00 130.27 12.23 118.04 Pass: Major Risk i, , PB S Pad S-121 S-121 V8 340.79 340.00 30.57 6.17 24.40 Pass: Major Risk , ' PB S Pad S-121 S-121 P61 V4 340.79 340.00 30.57 6.17 24.40 Pass: Major Risk ' , PB S Pad S-122 S-122 V9 744.04 750.00 153.23 12.61 140.62 Pass: Major Risk ~i ' PB S Pad S-122 S-122P61 V4 744.04 750.00 153.23 12.61 140.62 Pass: Major Risk I ' PB S Pad S-122 S-122P62 V2 744.04 750.00 153.23 12.61 140.62 Pass: Major Risk !~ PB S Pad S-122 S-122PB3 V2 744.04 750.00 153.23 12.61 140.62 Pass: Major Risk , , PB S Pad S-200 Plan S-200A East V3 PI 575.23 575.00 72.95 9.81 63.14 Pass: Major Risk ', PB S Pad S-200 Plan S-200A West V1 PI 600.97 600.00 73.13 9.33 63.80 Pass: Major Risk ; ! PB S Pad S-200 S-200 V1 598.93 600.00 73.11 9.20 63.91 Pass: Major Risk ' ' PB S Pad S-200 S-200PB1 V10 598.93 600.00 73.11 9.20 63.91 Pass: Major Risk PB S Pad S-213 S-213 V9 683.13 685.00 115.01 10.51 104.51 Pass: Major Risk ; PB S Pad S-213 S-213A V22 687.09 685.00 115.07 10.56 104.50 Pass: Major Risk PB S Pad S-213 S-213AL1 V9 687.09 685.00 115.07 10.56 104.50 Pass: Major Risk ', ' PB S Pad S-213 S-213AL1-01 V7 687.09 685.00 115.07 10.56 104.50 Pass: Major Risk , ; PB S Pad S-213 S-213AL2 V5 687.09 685.00 115.07 10.56 104.50 Pass: Major Risk ' PB S Pad S-213 S-213AL3 V7 687.09 685.00 115.07 10.56 104.50 Pass: Major Risk ', ~ ~ BP Alaska Anticollision Report Company: ` BP Amoco Date: 4/26/2007 Time: 15:54:50 Fage: ; ~' Field: Prudhoe Bay Referenee Site: PB S Pad Co-ordinate(NE} Reference: . Weli: Plart S-125, Tru e North Referenee Welt: Plan S-125 VQrtieal (TVD) Reference: 5-125 Pfan 65.0 Reference Wellpatl~r~ Pian 5-125P61. ~_ . ~_ _ _ _ _ _ - - - --- _ _- - _ 1~b: Or2cle -- Summary I r<=---- ---- qffset Wellpath ------ -----------> Refer~nCe Offset Ctr-Ctr Nu-Gq Allq~wable i Site ° Well Wellpath MD MD Distance Area Devi~tion !?Varning I ~ ~ , ~ ft ft; I 1 ~ 1 8 32.90 18.50 14.39 Pass: Major Risk 1i I PB S Pad S-4 0 Plan S 400A V1 Plan: P 409.47 4 0.00 103.83 7.36 96.47 Pass: Major Risk ~ ' PB S Pad S-400 S-400 V4 409.47 410.00 103.83 7.25 96.58 Pass: Major Risk ', ! PB S Pad S-401 S-401 V3 Plan: Plan #1 1169.37 1165.00 36.81 19.31 17.50 Pass: Major Risk ~, ', PB S Pad S-401 S-401 P61 V7 1169.37 1165.00 36.81 19.31 17.51 Pass: Major Risk '~ I I PB S Pad S-41 L1 S-41 L1 V1 500.68 510.00 76.14 8.10 68.04 Pass: Major Risk !, '~ PB S Pad S-41 PB1 S-41 P61 V1 500.&8 510.00 76.14 8.10 68.04 Pass: Major Risk ,', ' PB S Pad S-41 S-41 V1 500.68 510.00 76.14 8.10 68.04 Pass: Major Risk ', ', I PB S Pad S-42PB1 S-42P61 V1 801.58 810.00 50.29 13.69 36.60 Pass: Major Risk , I PB S Pad S-42 S-42 V2 801.58 810.00 50.29 13.69 36.60 Pass: Major Risk ' I PB S Pad S-43L1 S-43L1 V2 496.61 500.00 13.13 8.55 4.58 Pass: Major Risk I PB S Pad S-43 S-43 V3 496.61 500.00 13.13 8.55 4.58 Pass: Major Risk I PB S Pad S-44L1 P61 S-44L1 PB1 V3 548.80 550.00 15.97 8.83 7.14 Pass: Major Risk ' PB S Pad S-44L1 S-44L1 V5 548.80 550.00 15.97 8.83 7.14 Pass: Major Risk ' PB S Pad S-44 S-44 V10 548.80 550.00 15.97 8.83 7.14 Pass: Major Risk ~ ~ FieldPrudhoe Bay Site PB S Pad We11:Plan S-125 WellpathPlan S-125PB1 313 300 200 100 0 2 100 200 300 313 0 Travelling Cylinder Azimuth (TFO+AZI) [deg] vs Centre t ! Site: PB S Pad Drilling Target Conf.: 95% Description: Map Northing: 5977650.00 ft Map Easting : 615600.00 ft Latitude: 70°20'S1.843 N Shape: Circle i Target: S-125PB 1 Tgt 1 Well: Plan 5-125 Based on: Planned Program Vertical Depth: 6700.00 ft below Mean Sea Level Local +N/-S: -2727.01 ft Loca1+E/-W: -3374.00 ft Longitude: I 49 °03'41.605 W Radius: 100 ft / -~~Ol~ 250C -260C -2~0C ; _ _ .__ _ ~. _ _ _ __ __ _ _ ___ _. 0 0 0 0 0 DD o 0 0 0 D D ~ ~ ~- c~ c~ ~~~~ m ~~,~ i m i m i m i ~~ n -280C ' -2~OC 0 0 m i ~~ Schlumberger S-125 (P11) Proposal Report Date: April 26, 2007 Survey 1 DLS Computation Method: Minimum Curvature / Lubinski Client: BP Exploration Alaska Vertical Section Azimuth: 190.300° Pield: Structure I Slot: Prudhoe Bay Unit - WOA S-PAD / S-12515' N 44 Vertical Sec6on Origin: N 0.000 ft, E 0.000 ft d~ ND Reference Datum: Rotary Table ~~ Well: Plan S-125 ~ ~~ ' i~ ND Reference Elevation: 65.00 ft felative to MSL Borehole: ~ Plan S-125 ~ea Sea Bed 1 Ground Level Elevation: 36.50 ft relative to MSL UWIIAPI~1: 50029 Magnetic Declination: 23.699° Survey Name 1 Date: S-125 (P11) I August 10, 2007 ToWI Field Strength: 57652.616 nT 7ort / AHD 1 DDI 1 ERD ratio: 175.599° / 8431.87 ft/ 6.397 / 1232 Magnetic Dip: 80.949° Grid Coordinate System: NAD27 Alaska State Planes, Zone 04, US Feet Declination Date: August 10, 2007 Location LaULong: N 70.35518620, W 149.03417050 Magnetic Declination Model: B~GM 2006 Location Grid NIE YIX: N 5980430.000 ftUS, E 618930.000 ftUS North Reference: True North Grid Convergence Angle: +0.90962296° Tofal Corr Mag North -> True North: +23.699° Grid Scale Factor: 0.99991607 Local Coordinates Referenced To: Well Head ~ Comments Measured Inclination Azimuth Sub-Sea ND ND Vertical NS EW Gravity DLS Directional Northing Easting LatiWde Longitude Dep~ Secdon Tool Fa ce Difficulty ft de de ft ft R k ft de de 100 k Index ftUS ftUS Top Whipstock 10376. 04 55. 00 206 .00 6700. 00 6765. 00 2711 .20 -1500 .70 -6905. 29 HS 0 .00 6.09 5978820 .00 612050 .00 N 70. 35107772 W 149 .09022932 Base Whipstock 10389. 04 57. 08 206 .00 6707. 26 6772. 26 2721 .58 -1510 .39 -6910. 02 --- 16 .00 6.10 5978810 .24 612045 .42 N 70. 35105124 W 149 .09026762 <OP Crv 14/100 10401. 04 57. 08 206 .00 6713. 78 6778. 78 2731 .28 -1519 ,45 -6914. 43 10 .58L 0 .00 6.10 5978801 .12 612041 .15 N 70. 35102649 W 149 .09030340 10450. 00 63. 83 204 .60 6737. 92 6802. 92 2772 .40 -1557 .94 -6932. 61 9 .89L 14 .00 6.13 5978762 .35 612023 .59 N 70. 35092129 W 149 .09045068 10500. 00 70. 73 203 .33 6757. 22 6822. 22 2817 .19 -1600. 06 -6951. 32 9. 40L 14 .00 6.16 5978719. 94 612005 .55 N 70. 35080617 W 149 .09060225 10550. 00 77. 64 202 .16 6770. 84 6835. 84 2864 .13 -1644. 40 -6969. 90 9. 08L 14 .00 6.19 5978675 .31 611987 .68 N 70. 35068499 W 149 .09075276 10600. 00 84. 55 201 .06 6778. 58 6843. 58 2912 .54 -1690 .30 -6988. 08 8. 91 L 14 .00 6.21 5978629 .13 611970 .24 N 70. 35055955 W 149 .09089998 End Crv 10640. 80 90. 19 200 .17 6780. 44 6845. 44 2952 .63 -1728 .43 -7002. 42 --- 14 .00 6.24 5978590 .78 611956 .50 N 70. 35045534 W 149 .09101614 ~rv 10/100 10720. 10 90. 19 200 .17 6780. 18 6845. 18 3030 .75 -1802 .87 -7029. 77 61 .35L 0 .00 6.24 5978515 .92 611930 .34 N 70. 35025191 W 149 .09123759 5-125 Tgt 1 10736. 90 91. 00 198 .70 6780. 00 6845. 00 3047 .34 -1818 .71 -7035. 36 59 .90L 10 .00 625 5978500 .00 611925 .00 N 70. 35020863 W 149 .09128 10750. 00 91. 66 197 .57 6779. 70 6844. 70 3060 .31 -1831 .15 -7039. 44 59. 92L 10 .00 6.26 5978487 .49 611921 .12 N 70. 35017462 W 149 ~ .09131 10800. 00 94. 16 193 .23 6777. 16 6842. 16 3110 .03 -1879 .28 -7052. 69 60. 14L 10 .00 6.27 5978439 .17 611908 .63 N 70. 35004311 W 149 .09142308 10850. 00 96. 63 188 .87 6772. 46 6837. 46 3159 .79 -1928 .12 -7062. 23 60. 55L 10 .00 6.29 5978390 .19 611899 .87 N 70. 34990966 W 149 .09150015 10900. 00 99. 07 184 .46 6765. 63 6830. 63 3209 .21 -1977 .30 -7067. 98 61 .16L 10 .00 6.31 5978340 .92 611894 .90 N 70. 34977529 W 149 .09154644 End Crv 10919. 51 100. 00 182 .72 6762. 40 6827. 40 3228 .31 -'L996 .50 -7069. 19 --- 10 .00 6.32 5978321 .71 611894 .00 N 70. 34972283 W 149 .09155608 ~rv 10/100 11126. 58 100. 00 182 .72 6726. 43 6791. 43 3430 .46 -2200 .20 -7078. 87 133. 45R 0 .00 6.34 5978117 .90 611887 .55 N 70. 34916632 W 149 .09163313 11150. 00 98. 39 184 .44 6722. 69 6787. 69 3453 .41 -2223 .26 -7080. 32 133. 73R 10 .00 6.35 5978094 .82 611886 .48 N 70. 34910330 W 149 .09164468 -125 Tgt 2 11170. 05 97. 00 185 .90 6720. 00 6785. 00 3473 .20 -2243 .05 -7082. 11 134. 83R 10 .00 6.36 5978075 .00 611885 .00 N 70. 34904923 W 149 .09165907 11200. 00 94. 88 188 .03 6716. 90 6781. 90 3502 .94 -2272 .62 -7085. 72 135. 05R 10 .00 6.37 5978045 .39 611881 .86 N 70. 34896846 W 149 .09168817 nd Crv 11215. 52 93. 78 189 .13 6715. 73 6780. 73 3518 .41 -2287 .92 -7088. 03 --- 10 .00 6.37 5978030 .05 611879 .79 N 70. 34892664 W 149 .09170680 D/ 4-1/2" Lnr 91529. 50 93. 78 189 .13 6695. 00 6760. 00 3831 .64 -2597 .25 -7137. 74 --- 0 .00 6.40 5977720 .00 611835 .00 N 70. 34808146 W 149 .09210794 WeIlDesign Ver SP 2.1 Bld( doc40x_100 ) S-125 15' N 44\Plan S-125\Plan S-125\S-125 (P11) Generated 4/26/2007 4:33 PM Page 1 of 1 bp Schlumberger WELL FIELD SiRUCiURE S-125 (P11) Prudhoe Bay Unit - WOA S-PAD _ , w , ~, , ~~ ~~ . . ~,. , ~. _~,.,e ti ~~~a~~n~,eW= . ~. . . ... .. ~ ~ . ~ ~ ~..~.. . . "... .'.i„~~_~, ~;E~LVG~ 51~~1. 5-12515'NdJ NpRet RouryTa~le~65009a0oveMSL) - . .. '.- ~ ... . . , , ..~..~~„ ~ . ~~i~:(µ:>t: Plan 5-1251Ntt1 SrvYOx:e Hugu» 10.200] 2700 2850 3000 3150 3300 3450 3600 3750 3900 ~ 0 ~ c n ~ m ~ ~ ~ ~ 6600 6750 6900 7050 .........................5. .................................<..................................: ...................................i..................................(..................................4........................... ......•'...................................~..................................:. 25P81(P9) Top Whipstock : : Base Whipstock ; . . : 5-125 TQt 2 End Crv ~ T(1 I41I2" Lnr . ' ~ KOP Crv 14I100 ; ' : ' ......................:.................................._ Crv 10N00 : ~ ......................\........:...~.......... ............ ..................................:........_..:._.................... : ' ; ......... ' .................................:................. ...............:. 66~0 6750 ~ 6900 • 7050 2700 2850 3000 3150 3300 3450 3600 3750 3900 Vertical Section (ft) Azim = 190.3°, Scale = 1(in):150(ft) Origin = 0 N/-S, 0 E/-V bp • ~ Schlumberger VJEIL FIELD STRUCiURE S-125 (P11) Prudhoe Bay Unit - WOA S-PAD Megne~w Paiame:ers SuAace Lccation N/~O]'1 ~N~Fa 5'~a'.e Planes. 2ui~e W. US Fae; Miscallaneous MoEal BGGA1200E ~ip 80969' Uate s;10.1W) a Ni0]itN610 n 5990i]OOOYUS GrbGOnv~ -09119631W" Slo~ 5~12515'NG4 iV~Rel~ n'aryTaDbi6500haGO~ehISL~ MaqDec: ~tJ699 FS 516526ni 'N1092J01J Eas~nng9 6189]00011U5 SrabFan099991ti0ti"!6 Vlan 5-115~Ptti Sny~a~e Augus10.200] -7500 -7250 -7000 -6750 -6500 n n n Z ~ 0 ~ N C I I N (0 U ~ ~ v v v -1250 -1500 -1750 -2000 -2250 -2500 -2750 -3000 -1250 -1500 -1750 -2000 -2250 -2500 -2750 -3000 -7500 -7250 -7000 -6750 -6500 «< W Scale = 1(in):250(ft) E »> i r BP Alaska Anticollision Report Company: BP Amoco Date: 4/26/2007 Time: 16:48:16 Page: 1' Fielcl: Prudhoe Bay ReEerence Site: `PB S Pad Co-ordinate(NE) Reference: ` WeIL• Plan S-125, True:North Reference Welt: ' Plan S-125 Vertical ('I?YD) Reference: S-725;, Plan 65:0 , Reference WellpatlY: Plan 5-125 :.- . =--- ---.- . _ .. __ - ~ _::_ ` _._ . ~ ---- .~ -- ~ _ `--~----~ Db: Oracle _ !___ _ - -'=-- ~-~ _ ..;._ _ _ .- -- ---- -- --- -- p -_ : - _ -- , , p ~, GLOBAL SCAN APPLIED: All well aths wtthin 200 + 100/1000 of reference - There are [~@H~HaRells m thisRhld! al Plan & PLANNED PROGRAM ~, , Interpolation Method: MD Interval: 5.00 ft Error Model: ISCWSA EllipSe ; j Depth Range: 10376.04 to 11529.50 ft Scan Method: Trav Cylinder North I I Maximum Radius:10000.00 ft Error Surface: Ellipse + Casing I _ - _ -- -- _ -- - --- r -- -- - -- - - - _- -- .. _ _ - - -- - -- -- -- - __ _--- _ - - _ - _ _ -- Survey Program for Definitive Wellpath Date: 3/23/2007 Validated: No Version: 8 ~ , P-anned From To Survey Toolcode Tool Name , ! ft ft ~-- - _ _ --- -- ---- _ _ _--- - -- -- - _ 28.50 900.00 ~ Planned: Plan #9 V1 (0) GYD-GGSS Gyrodata gyro single shots ! 900.00 3710.00 Planned: Plan #9 V1 (0) MWD MWD - Standard ', ', 3710.00 10376.04 Planned: Plan #9 V1 (0) MWD+IFR+MS MWD + IFR + Multi Station ' ! 10376.04 11529.50 Planned: Plan #11 V1 MWD+IFR+MS MWD + IFR + Multi Station Casing Points 'MD T'VD Diameter Hple Size Name ft - - - ft - _ . in . -- - in _ __~._ - - = - _ _- - - _ - 3807.87 _ 2950.00 - - 9.625 ._ _ _ - ~ 12.250 9 5/8" -- - __ - ~'~ ' 10376.04 6765.00 7.000 8750 7" ' I 11529.50 6760.00 4.500 6.125 4 1/2" ' Summary < - Offset Welipath - --------------> Reference + Offset " Ctr-Ctr No-Go Alloivable Site Well Vl'ellpath ' MD MD Distance Area Deviation ' Warning --__ _ -- - , - - -- ft ft,, ft' ft ft -- = - - -= --- - ; _ , =- -_ _ - - PB S Pad __ ~ -- Plan S-125 __ - -- - - Plan S-125 Alt 1 V1 PI - - ---- - - ,- 10380.00 10380.00 0.02 203.09 -203.07 --- _ _ FAIL: Major Risk ' '~ PB S Pad Plan S-125 Plan S-125 Alt 2 V1 PI 11529.58 9155.00 327873 160.17 3118.56 Pass: Major Risk ', '~ PB S Pad Plan S-125 Plan S-125P61 V5 Plan: 10380.00 10380.00 OA2 202.10 -202.07 FAIL: Major Risk I ; PB S Pad Plan S-125 Plan S-125P82 Alt 2 V1 11529.8& 9160.00 3276.87 161.00 3115.88 Pass: Major Risk ' PB S Pad Plan S-126 Plan S-126 V7 Plan: PI 10491.80 11325.00 1587.38 160.42 1426.95 Pass: Major Risk ' PB S Pad Plan S-214 Plan S-214 V1 Plan: S- 11530.36 6030.00 5909.50 213.70 5695.80 Pass: Major Risk ', ', PB S Pad S-100 S-100 V10 Out of range ~, '~, PB S Pad S-101 S-101 V3 Out of range ~, I, PB S Pad S-101 S-101 PB1 V9 Out of range ' I PB S Pad S-102 S-102 V11 Out of range ', ;', PB S Pad S-102 S-102L1 V5 Out of range ' ', PB S Pad S-102 S-102L1 PB1 V7 Out of range ', PB S Pad S-102 S-102P61 V14 Out of range PB S Pad S-109 S-109 V8 Out of range , PB S Pad S-109 S-109PB1 V2 Out of range ', PB S Pad S-110 S-110 V18 I Out of range , PB S Pad S-112 S-112 V20 Out of range i ' PB S Pad S-115 S-115 ST V1 Plan: Plan Out of range ~ ~ ', PB S Pad S-115 S-115 V7 Out of range '~, PB S Pad S-116 Plan S-116L1 V1 Plan: Out of range , PB S Pad S-116 S-116 V6 Out of range I, PB S Pad S-117 S-117 V4 Out of range ', PB S Pad S-118 S-118 V5 Out of range ' PB S Pad S-119 S-119 V7 Out of range ~', ' PB S Pad S-120 S-120 V4 Out of range ~, PB S Pad S-121 S-121 V8 Out of range j PB S Pad S-121 S-121 P61 V4 Out of range ' ', PB S Pad S-122 S-122 V9 Out of range ' I PB S Pad S-122 S-122P61 V4 Out of range '~ PB S Pad S-122 S-122P62 V2 Out of range ' I PB S Pad S-122 S-122PB3 V2 Out of range I '~, PB S Pad S-200 Plan S-200A East V3 PI Out of range ~, ; PB S Pad S-200 Plan S-200A West V1 PI Out of range I ' PB S Pad S-200 S-200 V1 Out of range , PB S Pad S-200 S-200PB1 V10 Out of range ; PB S Pad S-213 S-213 V9 Out of range , I PB S Pad S-213 S-213A V22 11239.34 7980.00 4543.81 126.53 4417.27 Pass: Major Risk '~ j PB S Pad S-213 S-213AL1 V9 11242.12 7985.00 4494.51 122.31 4372.20 Pass: Major Risk !i I PB S Pad S-213 S-213AL1-01 V7 11246.13 7995.00 4564.31 121.80 4442.52 Pass: Major Risk ' ' PB S Pad S-213 S-213AL2 V5 11417.71 8115.00 4644.08 125.62 4518.46 Pass: Major Risk • • BP Alaska Anticollision Report Company. `BP AmoCO Date: 4I26/2007 : Time: 16:48:16 Fage: 2 E'ield: Prudhoe Bay ReEerence Site: PB S Pad Ca=ordinate(NE) Refere~ce: Welt: Plan 5-125, True North Reference Well: =Plan 5-125 Verkical.(TVD) Reference: 5-125 Plan 65.0 Reference WellpattY: Plait S-125 ~~_ - -- ~_ _ Dbs OI^aCle __ ~ ~._ ~ Summary 'r <_~_~_.___,_~ Q}7-set Wellpath - --.-~ Reference pffset CYr-Ctr NaGo Aa~owable ~- - ~ Site Well We(Ipath Mb MD DisYanee Area Deviation Warning ; ~ --- - - - -' - ft ft ` ft`, __ _ - ft ft : '1 - _' _, i -- -- PB S Pad - -- --- _ -- --- S-213 - -- - - ---- -_ S-213AL3 V7 . _ .- - _ _ _- 11256.57 8000.00 4589.82 :_ _ __ -- - - _ 120.75 4469.06 ~ . -- - -- - Pass: Major Risk ' ', PB S Pad S-216 S-216 V2 11529.23 5905.00 6958.55 147.49 6811.06 Pass: Major Risk ' ', PB S Pad S-400 Plan S-400A V1 Plan: P Out of range I PB S Pad S-400 S-400 V4 Out of range ~! PB S Pad S-401 S-401 V3 Plan: Plan #1 Out of range I , PB S Pad S-401 S-401 P61 V7 Out of range ' PB S Pad S-41 L1 S-41 L1 V1 Out of range I '! PB S Pad S-41 P61 S-41 P61 V1 Out of range , PB S Pad S-41 S-41 V1 Out of range , PB S Pad S-42PB1 S-42P61 V1 Out of range ' ! PB S Pad S-42 S-42 V2 Out of range ~~, PB S Pad S-43L1 S-43L1 V2 Out of range ' PB S Pad S-43 S-43 V3 Out of range ~ ' PB S Pad S-44L1 P61 S-44L1 PB1 V3 I Out of range i PB S Pad S-44L1 S-44L1 V5 Out of range I~ , PB S Pad -- --- _ S-44 __ _ _ S-44 V10 __ _ _ _ ---- -- - - Out of range ' ' _ _ -. .___ --- _ _ _ _ ____ --- --- - - ---- ~ _ FieldPrudhoe Bay', -1 5 7 150 100 50 0 2 50 100 150 -1 5 7 0 Travelling Cytinder Azimuth (TFO+AZI) [deg] vs Centre • ~ ' Target: S-125 Tgt Poly ---___ _------__Site:_P~_S_Pad------ ----- -- __---- --_ _ __ ~Ve1L•P__lan_~125_ _ _ _- -- __ _ - Drilling Target Conf.: 95% - _ _ _ - -____ --- - _ _-_- _ _ _ --- - Based on: Planned Program _ ------ - - _ __ --_ _ __- Description: Vertical Depth: 6700.00 ft be low Mean Sea Level Map Northing: 5978820.00 ft __ _ -- - _ --- -- Local +N/-S: -1500.70 ft ---- - - . - _ _ . -- ---~Ia~~:,~zn~~; ~~ oi~5~8E}€E - : _ -~eea~~~l W; -69Q3.~?_~ _--- - -- Latitude: 70°21'03.880N Longitude: 149°OS'24.825W Polygon-- ---- - _ _- -X-ft-- ---- Y ft ------- - - Map E ft _____ - _ Map N_ft _ --- - _ -- 1 -145.55 - _ .. 28237 611900.00 5979 t 00.00 _ _ 2 -53~T ~ -13I I~ -- - _ - ---7TI346.66 S . - - =~- _ _- _,T~~ ---~~~fi~- -- -- -._ - - ~~~686 0~- -_ - - -- _ - _ - 4 271.58 95.71 612320.00 5978920.00 ; _ _ _ -- - _ - _ --- _ _. --- - _ ' -~~~ ~ ' ' -600 -~00 ~ ' ' - I 200 -I500 N ' I ' I -I800 ' ' ' -2I00 -2~+00 ' -2~00 -~000 , ' -3300 _ _ _ _ _ _. _. _ ' -~600 ' o 0 0 0 0 0 0 o 0 0 0 0 0 ~ ~n ' ~ cv ~ ~ m o ~ ~~ ~ ~ ~ ~ ~ ~ ~~ ~ N ~ I Cn ~rvieie-~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^~^ ^ ^ ~~~~O~MI~M.-a0p~mp~ Nm ~Nnm M~tGm00fD~ m ~ ~ mm~mBmm~~m~~mBm~9.-N~N m~~N~ ~ ~~~ N~~~~~~~.-~~~~~~~N~NN~~~ I I I I I 1 I I I I I 1 I 1 I I I I I I I I I 1 I I I I I I I 1 N NNNlnNV1fAVINNNNVIVINVIN~U1NNfANN(nN1nN VI NNN N O O m N i, ~ O ..__......._.__._._______.______..___'_""___'__"_' , .. _"_'_' d Z ~~~ ~ =Q F wZ l N ~F ~ ~- W MANIFOLD ~ MODULE ; . Y Z ,~ F S-PAD NOTES: 1. COORDINATES ARE ALASKA STATE PLANE, ZONE-4 NAD 27 & PLANT 2. GEODETIC COORDINATES ARE NAD-27. 3. WOA S-PAD AVERAGE SCALE FACTOR IS: 0.9999165. 4. HORIZONTAL CONTROL IS BASED ON MONUMENTS S-3 & S-4. 5. BASIS OF VERTICAL CONTROL IS OPERATOR MONUMENTATION. ELEVATIONS ARE BP EXPLORATION MEAN SEA LEVEL DATUM. 6. REFERENCE F[ELDBOOK: WOID7-H9 PGS. 14-16. 7. DATE OF SURVEY: JUNE 04, 2007. 27 26 ~ I25 I S PAD _N_ i i ~ 34 ~ 35 36 ~Q~a~E~O ~ I ~o T.12N. 3 T.11N. Z VICIN[TY MAP N.T.S. LEGEND -~ AS-STAKED CONDUCTOR ~ EXIST[NG CONDUCTOR GRAPHIC SCALE 0 t06 29e 4ee ( IN FEET ) 1 inch = 200 ft. LOCATED WITHIN PROTRACTED SEC. 35. T. 12 N.. R. 12 E.. UMIAT MERIDIAN. ALASKA WELL A.S.P. PLANT GEODETIC GEODETIC GROUND SECTION NO. COORDINATES COORDINATES PQSITION(DMS) POSITION(D.DD) ELEV. OFFSETS Y=5,980,429.97 N 1010.00 70'21'18.670" 70.3551861° 35 5' 4227' FSL S-125 X= 618,930.00 E 425.fd0 149'02'03.014" 149.03417PJ6' . 4502' FEL ~ CHECKED:y^" ~^ ~/~~ ~ CLARKE ~ O O DATE: e ~ 6/6/97 ~~ ORAWING: ~zaa~ wos e~-ee WOA S-PAD SHEET: ~ 141~~00 ~o J~B N~ AS-STAKED CONDUCTOR cr+axeens ~«o w+o wv~mxs SCALE: ~ OF ~ ~'= zee~ WELL S-125 EPA Aquifer Exemption - 40 CFR 147.102 (b)(3) ~ ~ 6050000 6000000 5950000 5900000 5850000 400000 500000 _ _ _ __ _- 600000 700000 800000' a Alaska Department of Natural Resources Land Administration System Page 1 of 4 • ~ ~~ ~~ ;i/ ~ ', ~ '~' . . ; ~ ~ ~~~ ~~~~~~1~ F'~~t~ F~~C~~r`s ~~:arch Sta#e Cabins ~I~ti1 ~ ' ~1 ~ ~.,.,, , ,,,.,, ,,, , ~I+~S1"4~ Q~~ ~aS~ ~~~~~~~ File Type AD~ ~~ File Number: 28258~ ~1 Printable Case File Summary See Township, Range, Section and Acreage? t ~~~~ ~~ ~ C Yes ~"' No ~~\~~~ v~~~~~~~i~~'; http://www.dnr.state.ak.us/las/Case_Summary.cfin?FileType=ADL&FileNumber=28258&... 6/11 /2007 ' Alaska Department of Natural Resources Land Administration System Page 2 of 4 ~ ~ http://www.dnr.state.ak.us/las/Case_Summary.cfin?FileType=ADL&FileNumber=28258&... 6/11 /2007 - - ,~ ' Alaska Department of Natural Resources Land Administration System Page 3 of 4 ~ ~ ~ncl o~ ~a~~ 5ummary http://www.dnr.state.ak.us/las/Case_Summary.cfm?FileType=ADL&FileNumber=28258&... 6/11 /2007 ` Alaska Department of Natural Resources Land Administration System Page 4 of 4 • ~ Last updated on 06/11/2007. Not sure who to contact? Have a question about DNR? Visit the ~'ut~lic Irtforrrta~ion Center. Report technical problems with this page to the 1tVc~bt~t~~s~er°. Site optimized for Netscape 7, IE 6 or above. This site also requires that all C:~C~~CIEi must be accepted. State of_A[aska Natural_Reso€~rces LAS HQme Cflpyright Privacy System Status http:/1www.dnr.state.ak.us/las/Case_Summary.cfm?FileType=ADL&FileNumbei=28258&... 6/11 /2007 [Fwd: FW: S-125 dir plan] ~ Subject: [Fwd: FW: 5-125 dir plan] From: Art Saltmarsh <art saltrnarsh@admin.state.ak.us> Date: Mon, 11 Jun 2007 10:20:38 -0800 To: Thomas E Maunder <tom maunder@admin.state.ak.us> FYI. Just a heads up. u ------- Original Message -------- Subject:FW: 5-125 dir plan Date:Mon, ~ 1 Jun 2007 10:00:54 -0800 From:Hubble, Terrie L <Terrie.Hubble(~a,bp.com> To:art saltmarsh(~a,admin.state.ak.us, howard okland(a~admin.state.ak.us This Permit to Drill is on it's way over to you. Unfortunately, due to funding issues on two other satellite workover wells, this well may be moved up a month. I have changed the Spud Date to June 15th (per the Engineer). Terrie From: Peltier, Brandon Sent: friday, ]une 01, 2007 12:00 PM To: Hubble, Terrie L Subject: S-12S dir plan «S-125 PB1 (P9b) and (P11).xls» Brandon Peltier BP Exploration (Alaska), Inc. Operations Drilling Engineer GPB Ratary Drilling (907) 564-5912 (Direct) (907) 748-7838 (Mobile) Brandon. Peltier(c~bp.com 1 of 2 6/11/200? 3:23 PM • Terri L. Hubble BP Exploration AK inc. PO Box 196612 MB 7-5 Anchorage, AK 99519 PAY TO THE ORt2ER OF _ First National Bank Alaska Anchora AK 99501 MEMO ' ~ ~ ~ 89-6/1252 340 "Mastercard Check ~, ~ ~~/~ DATE v / $ / l.Jl./ ~ `~ ( DOLLARS ~: L 2 5 200060~:99 L46 2 2 7 L 5 56~~' 0 340 ~ • ~T'RAiYS1d[I~'~'AL L~1'TEla C'I~~CKL~ST WEi,L NA.tiiE ~.~~/ .~=~~ P~'D# a0~0~30 ~Deve[opmeat Service Exploratory ~YoR-Coaventiona! Weti _____ Stratigraphic 1'est Circ[e Appcopriate Letter / Pacagraphs to be [nctaded ia Transmittai Letter ' CE~CK ; w'HAT APPLfES I--~ I ; KUt!-ViV.S (OPTION S) MliLl`I LATERAL ; (If tast two digits ~ ~Pt number ; between 60-69) ~ PILOI' EIOLE ,' ; fn accordance with 20 AAC 25.005 (~, a!t records, data and Io~s ; acquired for the pilot hole mu t b i s e ciearty differentiated in both { well name ( ' ' (50- p~ and APt n~unber i -_) from records, data and lo~s , acquired for we(! ~ SPACING The permit is approved subject to fuil i EXCEPTION compliance with 20 AAC ~ 2.5.055. Approva! to perfora:te and wroduce / iniect is conti I i ngent I upon issuance of a conservation order approving a spacing ~ l exception. ' ~ ~(iabi[ity of any protest to the spacing exception that may oc urs ~e i ; DRY DITCH ~ ' A(I dry ditch sampte sets subrnitted to tt~e-E i SA!t~IPLE ~ ommission must be in ; i ao greater thar~ 30' sample intecvals &om below~ clle permafrost or ' f ~ I rom where samp(es are first caught a~td IO' sampte interv~als ; through target aones. i ~ j t~Ion-Conventional i W t ~ i Please note the follow~ing. special condition of thi; permit: ~ production or production tesiin f a 1 ~ g o I coal bed metharte is not allowec! ~ ~ for (name of well) unti! after (Companv Name) has designed and I j ~~mplemented a water weli testing Program to provide baseline data ; on water quality and u ti I q an ty. (Comnanv I~1ame) must contact rhe ~ Commission to obtain advance approval of such water wei( testi ! ng ~ pragram. T'EXT FOR APPRO~'AL LETTER ~ The perniit is for a new wellbore segment of existing I~ wel! i ~n ! Permit Yo. are , AP[ No. ~0- . ! Production shou[d continue [o be repocted as a function of the ~ ~ origina! Apt number yra,ted above. Rev: [ 2~i06 C:' j ody ~ transmi ttal_ch ec k! ist ~ ~ ^^ ~ N , , , , , , , , , , , ~ o a~ a , , , , . , ~ ~ ~ ~ ~ ~ ~ , , ~ , , N ~ , ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ , ~ ~ ~ ~ N ~ ~ ~ ~ ~ ~ ~ , ~ , ~ ~ ~ ~ , ~ ~ ~ , , ~ ~ ~ ~ ~ ~ ~ , ~ ~ ~ , ~ , ~ ~O ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ , ~ ~ ~ ~ ~ ~ ~ , ~ ~ ~ ~ , ~ , ~ ~ ~ ~ ~ , ~ ~ ~ ~ ~ ~ ~ ~ , , , , ~ ~ , ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ , , ~ ~ ~ ~ ~ C ~ Q ~ ~ ~ ~ , ~ ~ ~ ~ ~ ~ , ~ ~ , ~ ~ ~ , , ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ , ~ ~ , ~ , ~ , ~ , ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ y~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~~ ~ ~ ~ , ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~~ ~ ~ ~ , ~ ~~~ ~ ~ , ~ ~ ~ 1 ~ ~ ~ ~ ~ ~ ; , ~ i ~ ~ ~ ~ ~ ~ ~ ~ , ~ ~ ~ ~ ~ ~ ~ ~ , ~ ~ , ~ ~ ~ ~ ~ ~ ~ ~ ~ N ~ ~ ~ ~_~ -~~ ~ ~, ~ ~ ~ ~ ~ ~ ~~, ~ ~, ~ ~ ~ ~ ~ ~ ~ ~ ~~ ~ N~ C ~ U ~ ~ ~ ~ C~ ~ , ~ , 3 , ~; ~, ~, ~ ~ p ~~ ~~ ; ~~ ~~ ~~ ~~ ~~ , , ~~ ~~ ~ ~~ ~~ ~ ~~ ~~ ~ ~~ ~~ ~~ ~o , ~ E' N~ ~ ~~ ~~ ~ `~~ o~~ ~~ ~~ ~~ ! , ~ ~ a ~ ~ ° ~ ~ m ~ o , , , i ~ ; • ; c ~; ~ ~ ~ ~ ~ v w~ ~ , , , , ~ , N, ~, a ~ a ~I O , ~ , ~ , y o, o, ~ Q i p. c O o a , 6y a ~ o, m m ~ , , , i ( , o ~A ~ ~, o~ m ~ ~ n. ~ ~ ~ ~ ~ , ~ ~ ~ ; ; ~ ; ~,' ~ L, C' , ' ; O~ ~ ~ y N~ ~~ f0~ ~ ~ , I ~ ~ ~ ~ ~ , ~ ~ ~ ~ ~ ~ ~ ~ ~ , ~ ~ ~ ~ 3, ~ ~ ~ ,~ a, ~ , ~ , _' o; ~ ~ , ~ ( ~ ~ ~ ~ ~ , ~ ~ ~ ~ ~ ~ ~ ~ ~ , ~ ~ ~ ~ ~ Q, ~ ~~ y~ ~, U ~ ~ ~~ , ~~~ M ~ , , ~i ~ ~ ~ ~, , ~ , , ~ , ~ ~ , ~ , ~ ~ , ~ ~ ~ ~ , ~ ~ , ~, ~ L, •u W ~ ~ ~ ~ ~ N ''' ~ , , ~ ~ , . t!') .-. ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ , ~ ~ ~ ~ ~ ~ ~ ~ ~ C~ ~ O. 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