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209-126
II h � r , '_' v ,4/ SEAN PARNELL, GOVERNOR i 'l\t , k1q." ! e g 11 Le- ,.„, ) ini, i e...e., /IL CP.,) _ 1,1 ALASKA OIL AND GAS i 333 W. 7th AVENUE, SUITE 100 CONSERVATION COAII►IISSION / ANCHORAGE, ALASKA 99501 -3539 ® PHONE (907) 279 -1433 ® FAX (907) 276 -7542 Mr. C. Alvord Drilling Manager ConocoPhillips Alaska Inc. P.O. Box 100360 Anchorage, Alaska 99510 -0360 Re: Colville River Field, Alpine Oil Pool, CD4 -303 ConocoPhillips Alaska Inc. Permit No: 209 -126 Surface Location: 2892' FNL, 109 FEL, SEC. 24, T11N, R4E Bottomhole Location: 868' FNL, 163' FEL, SEC. 13, T11N, R4E Dear Mr. Alvord: Enclosed is the approved application for permit to drill the above referenced development well. In accordance with 20 AAC 25.005(f), all records, data and logs acquired for the pilot hole must be clearly differentiated in both well name (CRU CD4 -303 PH) and API number (50 -103- 20606 -70) from records, data and logs acquired for well CRU CD4 - 303. 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) 659 -3607 (pager). incerely, 4- Damel T. Seamount, Jr. 1,t, a Chair DATED this 2 day of November, 2009 cc: Department of Fish 8s Game, Habitat Section w/o encl. Department of Environmental Conservation w/o encl. ConocoPhillips Alaska, Inc Post Office Box 100360 Anchorage, Alaska 99510 -0360 ConocoPhillips Telephone 907 - 276 -1215 October 16, 2009 RECEIVED Alaska Oil and Gas Conservation Commission OCT 1 6 Z009 333 West 7 Avenue, Suite 100 Anchorage, Alaska 99501 Alaska Oil & Gas Cons. Commission Re: Application for Permit to Drill CD4 -303 & CD4 -303 PB1 Anchorage Dear Sir or Madam: ConocoPhillips Alaska, Inc. hereby applies for a Permit to Drill an onshore horizontal producer well from the Nanuq CD4 drilling pad. The intended spud date for this well is 12/15/2009. It is intended that Doyon Rig 19 or Doyon 141 be used to drill the well. CD4 -303 is intended to be a horizontal Kuparuk C sand producer. However, the reservoir pressure may be too low and the sand may not be thick enough to drill a horizontal. Therefore a pilot hole, CD4 - 303PB1, will be drilled through the Kuparuk sand at 70° to verify if a horizontal well is feasible. The pilot hole will be abandoned with 2 plugs. Then the well, CD4 -303, will be kicked off at approximately 7,300' MD and landed in the Kuparuk C sand horizontally. After setting 7" intermediate casing the well will be completed as a slotted liner producer. The well will be flowed back to mitigate formation damage and then be closed in awaiting completion of well work for the well to begin production. CONTINGENCY PLAN: If the sand and pressures do not allow for a horizontal well, the intermediate casing will be run in the pilot hole. The well will be completed as a high angle slant and will be perforated before production. It is expected that the K2 (Qarinik) sand will be considered a significant hydrocarbon bearing zone. It is planned to pump lead cement, then open a stage tool and pump a second cement job to isolate the K2 with 500' of cement above and below the interval. This will leave a mud gap between the two stages. It is requested that a waiver of the divertefequirement under 20 AAC 25.035 (h)(2) be granted. There 7` have been 19 surface holes drilled at CD4 and there has not been a significant show of shallow gas or gas hydrates. Please find attached the information required by 20 ACC 25.005 (a) and (c) for your review. Pertinent information attached to this application includes the following: 1. Form 10 -401 APPLICATION FOR Permit to Drill per 20 ACC 25.005 (a). 2. A proposed drilling program 3. A drilling fluids program summary. 4. Proposed pilot hole schematic 5. Proposed completion diagram 6. Pressure information as required by 20 ACC 25.035 (d)(2). 7. CD4 -303 Pilot Hole Cementing Requirements 8. Directional drilling / collision avoidance information as required by 20 ACC 25.050 (b). Information pertinent to the application that is presently on file at the AOGCC: 1. Diagrams of the BOP equipment, diverter equipment and choke manifold lay out as required by 20 ACC 25.035 (a) and (b). 2. A description of the drilling fluids handling system. • • 3. Diagram of riser set up. If you have any questions or require further information, please contact Liz Galiunas at 265- 6247 or Chip Alvord at 265 -6120. Sincerel , Liz sa'un:s Drilling Engineer Attachments cc: CD4 -303 Well File / Sharon Allsup Drake ATO 1530 Chip Alvord ATO 1577 Nina Anderson ATO 1704 Jack Walker ATO 1740 Lanston Chin Kuukpik Corporation • • 0 RECEIVED STATE OF ALASKA OCT 1 6 2009 ALASKA OIL AND GAS CONSERVATION COMMISSION PERMIT TO DRILL Alaska Oil & Gas Cons. Commission 20 AAC 25.005 Anchorage 1 a. Type of Work: 1 b. Current Well Class: Exploratory ❑ Development Oil IS • 1 c. Specify if well is proposed for: Drill el • Re -drill ❑ Stratigraphic Test ❑ Service ❑ Development Gas ❑ Coalbed Methane ❑ Gas Hydrates ❑ Re -entry ❑ Multiple Zone Single Zone Q . Shale Gas ❑ 2. Operator Name: 5. Bond: U Blanket U Single Well 11. Well Name and Number: ConocoPhillips Alaska, Inc. Bond No. 59 - 52 - 180 • CD4 - 303 3. Address: 6. Proposed Depth: 12. Field /Pool(s): P.O. Box 100360 Anchorage, AK 99510 - 0360 MD: 12236' • TVD: 6981' . Colville River Field 4a. Location of Well (Governmental Section): 7. Property Designation: /_ `- Surface: 2892 FNL, 109 FEL, Sec. 24 , T 11 N R 4 E ..COCADL 380077, 380075 Nan rak Oil Pool /",�`, L ; 9 Top of Productive Horizon: 8. Land Use Permit: 13. Approximate Spud Date: 4986 FNL, 170 FEL, Sec. 13 , T 11 N R 4 E ALK LAS2112 12/15/2009 Total Depth: 9. Acres in Property: 14. Distance to 868' FNL, 163' FEL, Sec. 13 , T 11 N R 4 E 2560 Nearest Property: 4 mi to ownership change 4b. Location of Well (State Base Plane Coordinates): /VAD 2.7 ; 92,,.,.... 1 10. KB Elevation 53 7 j " ,,��`t L, ` 15. Distance to Nearest • Surface: x - 378135.75 • y - 5957516.8 Zone 4 (Height above GL) 37'. / t feet Well within Pool: CD2 -53 2337' at 11892' MD , 16. Deviated wells: Kickoff depth: 400 • ft. 17. Maximum Anticipated Pressures in psig (see 20 MC 25.035) Maximum Hole Angle: 90° • deg Downhole: 3159 psig Surface: 2470 psig 18. Casing Program Specifications Setting Depth Quantity of Cement Size Top Bottom c. f. or sacks Hole Casing Weight Grade Coupling Length MD TVD MD TVD (including stage data) 24" 16" 62.5# H-40 Welded 77 37 37 114 114 Pre - Installed 12.25" 9 -5/8" 40# L -80 BTC 2432 37 37 2469 • 2400 4 434 sx AS Lite, 230 sx 15.8 G • 8.75" 7" 26# L -80 BTCM 8198 37 37 8235 - 6997 427 sx Class G, 184 Sx class G for K2 2 -7/8" 6.5# L -80 EUE 8031 37 37 8068 6981 Tbg 6.125" 3.5" 9.3# L -80 SLHT 4141 8085 6983 12226 6980 Slotted Liner 19 PRESENT WELL CONDITION SUMMARY (To be completed for Redrill and Re -Entry Operations) Total Depth MD (ft): Total Depth TVD (ft): Plugs (measured) Effective Depth MD (ft): Effective Depth TVD (ft): Junk (measured) Casing Length Size Cement Volume MD TVD Conductor/Structural Surface Intermediate Production Production Liner Perforation Depth MD (ft): Perforation Depth TVD (ft): 20. Attachments: Filing Fee n BOP Sketch Drilling Program 77 Time v. Depth Plot ❑ Shallow Hazard Analysis 12 Property Plat y u y Diverter Sketch _ Seabed Report _ Drilling Fluid Program 0 20 AAC 25.050 requirements 21. Verbal Approval: Commission Representative: Date: 22. I hereby certify that the foregoing is true and correct to the best of my knowledge. Contact L. Galiunas Printed Name C. Alvord Title Drilling Manager Signature /J. ✓� /...1./...4 Phone Date if I Raliunas rm � w),Are5 y ommission Use Only Permit to Drill / API Number: / - , �L Permit Approv See cover letter _2 Number: / -6:- / _) 50- /c)5' .,(! X�. - j I Date: // A I //%� for other requirements Conditions of approval : If box is checked, well may not be used to explore for, test, or produce coalbe met ne, gas hydrates, or gas contained in shales: g * 3500 80P T Samples req'd: Yes ❑Vo Mud log req'd: Yes 111 No In Other: �� A .r^ H2S measures: Yes ❑Jo 12 Directional svy req'd: Yes © No III -- ()Wed- LcciC/J Zo AAC_ 2 a 3S Oj(2, X �� 1; -5 C;„,.,,, :ssv.. 4.-4 /3/ fi- /�' /e T _ APPROVED BY THE COMMISSION / D AT � � , COMMISSIONER •. se 9,Qa_ /6.24. CMIGINAL4 l/!>plitae /.c. -7 • CD4 -303 Drilling Hazards Summary (to be posted in Rig Floor Doghouse Prior to Spud) (See Well Plan Attachment: Detailed Risk Information for further discussion of these risks) 12 -1/4" Hole / 9 -5/8" Casing Interval Event Risk Level Mitigation Strategy Conductor Broach Low Monitor cellar continuously during interval. Well Collision Low Gyro single shots, traveling cylinder diagrams Gas Hydrates Low Monitor well at base of permafrost, increased mud weight, decreased mud viscosity, increased circulating times, controlled drilling rates, low mud temperatures Running Sands and Gravel Low Maintain planned mud parameters, Increase mud weight, use weighted sweeps. Abnormal Pressure in Low Increased mud weight Surface Formations >2000' TVD Lost Circulation Low Reduced pump rates, mud rheology, lost circulation material, use of low density cement slurries 8 -3/4" Hole / 7" Casing Interval Event Risk Level Mitigation Strategy Abnormal Pressure in low BOPE drills, Keep mud weight above 9.6 ppg. Surface Formations Check for flow during connections and if needed, >2000' TVD increase mud weight. Lost circulation Low Reduced pump rates, reduced trip speeds, real time equivalent circulating density (ECD) monitoring, mud rheology, lost circulation material Hole swabbing on trips Moderate Reduced trip speeds, mud properties, proper hole filling, pumping out of hole, real time equivalent circulating density (ECD) monitoring, weighted sweeps. Abnormal Reservoir low Well control drills, increased mud weight. No Pressure mapped faults occur within 700' of the planned wellbore. Hydrogen Sulfide gas Low H drills, detection systems, alarms, standard well control practices, mud scavengers 6 -1/8" Hole / Horizontal Production Hole Event Risk Level Mitigation Strategy Lost circulation moderate Reduced pump rates, reduced trip speeds, real time equivalent circulating density (ECD) monitoring, mud rheology, lost circulation material Hole swabbing on trips Moderate Reduced trip speeds, Pump out to 7" shoe, mud properties, proper hole filling, pumping out of hole, real time equivalent circulating density (ECD) monitoring, weighted sweeps. Abnormal Reservoir Medium BOPE drills, Keep mud weight above 8.8 ppg. Pressure Check for flow during connections and if needed, increase mud weight. Well control drills, increased mud weight. Hydrogen Sulfide gas Low H drills, detection systems, alarms, standard well control practices, mud scavengers ORIGINAL • • Fiord : CD4 -303 Procedure 1. Move on Doyon 19. 2. Drill 12 -W hole to the surface casing point as per the directional plan. (Directional /MWD). 3. Run and cement 9 -5/8" surface casing. 4. Install and test BOPE to 3500 psi. 5. Pressure test casing to 3500 psi. 6. Drill out 20' of new hole. Perform leak off test. 7. Pick up and run in hole with 8 -3/4" drilling BHA. 8. Drill 8 -3/4" hole to Pilot hole target in the Kuparuk C sand +/- 8284' MD. (LWD Program: d GR /RES /DENS /NEUT /PWD/ Geo Tap) Plan for Horizontal Well 9. If sand is deemed thick enough and pressure indicates drilling a horizontal, plug back the pilot hole with 2 - abandonment cement plugs. 10. Kick off cement plug with 8 -3/4" drilling assembly at +/- 7300' MD. 11. Drill 8 -3/4" hole to intermediate casing point in the Kuparuk C sand. (LWD Program: GR /RES /PWD) 12. Run and cement 7" casing as per program. Carry out a leak off test down the 9 -5/8" x 7" casing annulus to confirm the fracture pressure referenced to the casing shoe. Freeze protect casing annulus and casing. 13. BOPE test to 3500 psi. 14. Drill out 7" shoe track. Drill 20' of new hole. Perform formation integrity test . 15. Drill 6 -1/8" horizontal section to well TD (LWD Program: GR /RES /PWD). 16. Circulate the hole clean and pull out of hole. 17. Run lower completion of 3 -Y2 ", 9.3# L -80 SLHT blank and slotted liner and liner hanger. 18. Run upper completion of 2 -7/8, 6.5 #, L -80 tubing with SSSV, packer, 3 GLMs with shear out valve in bottom mandrel, XN profile and wireline entry guide. Land hanger. 19. Install 2 way check and pressure test hanger seals to 5000 psi. Nipple down BOP. 20. Install tubing head adapter assembly. Pressure test adapter assembly to 5000 psi. Remove 2 way check. 21. Circulate tubing to diesel and install freeze protection in the annulus. 22. Drop ball and rod, set packer and test tubing and annulus to 3500 psi / 30 mins. 23. Set BPV and secure well. Move rig off. Post rig welt work will include pulling the ball and rod assembly, and GLV change out. CONTINGENCY PLAN: High Angle Slant Well 9. POOH and Run and cement 7" casing as per program. Carry out a leak off test down the 9 -5/8" x 7" casing annulus to confirm the fracture pressure referenced to the casing shoe. Freeze protect casing annulus and casing. ORIGINAL • 10. Run 2 -7/8, 6.5 #, L -80 tubing with SSSV, packer, 3 GLMs with shear out valve in bottom mandrel, XN profile and wireline entry guide. Land hanger. 11. Install 2 way check and pressure test hanger seals to 5000 psi. Nipple down BOP. 12. Install tubing head adapter assembly. Pressure test adapter assembly to 5000 psi. Remove 2 way check. 13. Circulate tubing to diesel and install freeze protection in the annulus. 14. Drop ball and rod, set packer and test tubing and annulus to 3500 psi / 30 mins. 15. Set BPV and secure well. Move rig off. Post rig well work for the high angle slant will include pulling the ball and rod assembly, GLV change out, and perforating the Kuparuk interval. O g1(I N"L • • Well Proximity Risks: Directional drilling / collision avoidance information as required by 20 ACC 25.050 (b) is provided in following attachments. CD4 -320 PB1 is the nearest existing well to the CD4 -303 plan with 109' well to well separation at 4509' MD. Drilling Area Risks: There are no high -risk events (e.g. over - pressures zones) anticipated. • Lost circulation: Faulting and low reservoir pressure within the Kuparuk reservoir section is considered to be the most likely cause of lost circulation. Standard LCM material and well bore strengthening pills are expected to be effective in dealing with lost circulation. If GeoTap measurements indicate pressures are too low to drill the horizontal the well will be completed as a high angle slant. Additional care and attention will be given to the higher potential of inducing a kick when drilling horizontally as opposed to vertically. Good drilling practices will be stressed to minimize the potential of taking swabbed kicks. Annular Pumping Operations: Incidental fluids developed from drilling operations on well CD4 -303 will be injected into a permitted annulus on CD4 pad or the class 2 disposal well on CD1 pad. The CD4 -303 surface /intermediate casing annulus will be flushed with 300 bbls of fresh water prior to freeze protecting with diesel to 2000' TVD. The significant hydrocarbon zones are the Nanuq, Kuparuk, and the Qannik reservoir. There will be 500' of cement fill above the top of the Nanuq and Qannik reservoirs. Upon completion of CD4 -303 form 10 -403, Application for Sundry Operations, will be filed. Annular 7 pumping of fluids occurring due to drilling operations, per regulation 20 AAC 25.080, could then begin once �,- properly permitted. As stated above, any zones containing significant hydrocarbons will be isolated prior to initiating annular pumping. There will be no USDW's open below the shoe or potable /industrial water wells within one mile of the receiving zone. Reference the enclosed directional drilling plan for other formation markers in this well. Surface casing will be set near the base of the Schrader Bluff Formation (C -40). These 450 -500' thick shales are part of the Colville Group and are known to provide vertical barriers to fluid flow in other areas. The maximum volume of fluids to be pumped down the annulus of this well will not exceed 35,000 bbl without the specific permission of the AOGCC. Fluid densities will range from diesel to a maximum of 12.0 ppg for drilling fluid wastes. Using 12.0 ppg fluid and the rig's specified maximum pumping pressure of 1,500 psi for annular injection, the maximum pressure at the surface casing shoe is estimated by: Max Shoe Pressure = (12.0 ppg) * (0.052) * (Surf. Shoe TVD) + 1,500 psi = (12.0 ppg) * (0.052) * (2400') + 1,500 psi = 2998 psi Pore Pressure = 1,086 psi Therefore Differential = 2998 —1086 = 1912 psi. The internal casing pressure is conservative, since frictional losses while pumping have not been taken into consideration. The surface and intermediate casing strings exposed to the annular pumping operations have sufficient strength by using the 85% collapse and burst ratings listed in the following table: Wt Connection 85% of 85% of OD (ppf) Grade Range Type Collapse Collapse Burst Burst 9 -5/8" 40 L -80 3 BTC 9,090 psi 1,717 psi 5,750 psi 2,992 psi 7" 26 L -80 3 BTC -Mod 5,410 psi 4,599 psi 7,240 psi 6,154 psi ORIGINAL • DRILLING FLUID PROGRAM SPUD to Intermediate hole to 7" Production Hole Section — 9-5/8"surface casing casing point — 8 3/4" 6 1/8" point — 12 %4" Density 8.8 — 9.6 ppg 9.6 — 9.8 ppg 8.1 -8.8 ppg . PV 10 — 25 10 -15 YP 20 — 60 15 — 25 25 -30 Funnel Viscosity 100 — 200 Initial Gels 4 — 8 10 -15 10 minute gels <18 12 -20 API Filtrate NC —10 cc / 30 min 4 — 12 cc /30 min NA HPHT Fluid Loss at 160 (drilling) 12 -14 cc /30 min PH 8.5 — 9.0 9.0 — 10.0 9.0 -9.5 KCL 6% Surface Hole: A standard high viscosity fresh water / gel spud mud is recommended for the surface interval. Keep flow line viscosity at ± 200 sec /qt while drilling and running casing. Reduce viscosity prior to cementing. Maintain mud weight < 9.6 ppg by use of solids control system and dilution where necessary. Intermediate Hole Section: Fresh water gel / polymer mud system. Ensure good hole cleaning by pumping regular sweeps and maximizing fluid annular velocity. There is potential for lost circulation, particularly after the reservoir is penetrated. Maintain mud weight at or below 9.8 ppg and be prepared to add Toss circulation material. Good filter cake quality, hole cleaning and maintenance of low drill solids (by diluting as required) will all be important in maintaining wellbore stability. Production Hole Section : The horizontal production interval will be drilled with a M -I FIo -Pro drill -in fluid. The base fluid will consist of 6% KCI, with ± 30PPB calcium carbonate bridging material to minimize formation damage. FIo -Vis Polymer and Dual-Flo starch will be used for viscosity and fluid loss control respectively. ORIGINAL • • Plug Back Completion Schematic Updated 9/12/07 RKB - GL = 36.3' Sperry Sun Directional Plan WP06 Wellhead A 11: , 16" Conductor to 114' 9 -5/8" 40 ppf J -80 BTCM ►, Surface Casing @ 2469' MD / 2400' TVD cemented to surface 9.8 ppg drilling mud in hole Top Nanuq @ 6462' MD / 6159' TVD 6913 10 z\ KOP7300' Plug #2:600' Kick off plug To at NIMONME 600 +_ / 6913' MD 17 prig. o f 7513 ;i� II�[ifiElleeSeeee �:! ::;.;: ::� ::::9::x:: k Reservoir Top Ku at O p u P ar : E:!! Plug #1 : +/- 600' Top +/- 7513' MD +1- $113' g P@ 600 ft 15.8 DPQ �iE eeeeeeee9eee `ie(eeeeee'e'e iiikiiiieiiiiiiii11eieeiieiiiii &iei [7 Pilot Hole @ +1- 70 deg TD at +/- 8284' MD / 7051' TVD ORIGINAL • • Completion Schematic Planned CD4 - 303 Nanuq Kuparuk Producer Completion 10 -15 -2009 Sperry Sun • j ....::: 16" Insulated Conductor to Directional Plan WP06 A � ,, — 114' 10/15/2009 2 Jts 4 -'/2' 12.6 ppf L -80 IBT Mod Tubing 2 -7/8" X 4 -' /z" Cross over ©,tii 2.813" TRMAXX -5E SSSV 9 -5/8" 40 ppf L -80 BTCM Surface Casing A 2469' MD / 2400' TVD 2 - 7/8" 6.5#/ft L -80 EUE Mod Tubing Upper Completion; 102_11Q. DM C GL J !tam Cement to +1- 3731' 1) Tubing Hanger 32' 32' MD / 3589' TVD 2) 4-%" 12.6 #/ft IBT -Mod Tubing 2 jts 3) 2 -7/8" X 4 -W Crossover 4) 2 -7/8" 6.5 #/ft EUE -M Tubing :' Qannik interval top +/- 5) Camco TRMAXX -5E SCSSSV W/ X profile (2.312 ") 2045 2000' . 4231' MD / 4060' TVD 6) 2 -7/8" 6.5 #/ft EUE -M Tubing • Stage 1 7) Camco KBMG GLM 3530' 3400' cementing tool :C b e l 8) 2-7/8" 6.5 #/ft EUE -M Tubing 9) Camco KBMG GLM 5864' 5600' +/ - 4751' MD / 10) 2 -7/8" 6.5 #/ft EUE -M Tubing 4550' TVD 11) Camco KBMG GLM 7040' 6591' With DCk -2 shear out valve (pinned for 3000 psi) 12) 2 -7/8" 6.5 #/ft EUE -M Tubing (2) 13) Baker Premier Packer - 60° inc 7120' 6635' 14) 2 -7/8" 6.5 #/ft EUE -M Tubing (2) 15) HES "XN" (2.205 Min ID ")- 63° inc 7200' 6673' 16) 2 -7/8" 6.5 #/ft EUE -M Tubing 17) BOT Stinger w/ fluted WLEG/ pup /shear sub 8068' 6981' 3' space out above top of liner Lower Completion: Too MD IYQ Item O \........ ,,, 18) Baker 5" x 7" Flexlock Liner Hanger 8085' 6983' 19) 3 -'/", 9.3 # /ft, SLHT Tubing +/- 3 jts 20) 3 -'/" 9.3 # /ft, SLHT liner w/ blank across shale and slots across sand 21) Baker Shoe 12226' 6980' Top of cement 5962' MD / 5691' T 3 -''A" 9.3 #/ft L -80 SLHT Mod Slotted liner Pattem: ( +/ - 500' above Na A� 8 slots / ft, 2 -' %" x 1/8" slots • � � 15 Top Reserv 21 Nanuq 6462'MD /6160'TVD ® ®18 iig Kuparuk 8161' MD / 6993' TVD TD 6-1/8" hole 7" 26 ppf L -80 BTC Mod 12,236' MD / 6981' TVD Production Casing @ +/ -90° 8235' MD, 6997' TVD ORI • • CD4 -303 PRESSURE INFORMATION AND CASING DESIGN (per 20 ACC 25.005 (c) (3,4) and as required in 20 ACC 25.035 (d) (2)) The following presents data used for calculation of anticipated surface pressure (ASP) during drilling of this well : Csg Setting Fracture Pore Casing Size Depth Gradient pressure ASP Drilling (in) MD/TVD(ft) (Ibs. / gal) (psi) (psi) 16 114 / 114 10.9 52 53 9 5/8 2469 / 2400 14.5 1086 1570 7" / TD 8235 / 6997 16.0 3166 Gt&u 2470 N/A 12236 / 6981 16.0 3159 8,7 N/A • NOTE: The Doyon 19 5000 psi BOP equipment is adequate. Test BOP's to i. ✓ :3SCa PROCEDURE FOR CALCULATING ANTICPATED SURFACE PRESSURE (ASP) ASP is determined as the lesser of 1) surface pressure at breakdown of the formation casing seat with a gas gradient to the surface, or 2) formation pore pressure at the next casing point less a gas gradient to the surface as follows: 1) ASP = [(FG x 0.052) - 0.1]D Where: ASP = Anticipated Surface pressure in psi FG = Fracture gradient at the casing seat in lb/gal 0.052 = Conversion from lb./gal to psi /ft 0.1 = Gas gradient in psi /ft D = true Vertical depth of casing seat in ft RKB OR 2) ASP =FPP - (0.1 x D) Where; FPP = Formation Pore Pressure at the next casing point ASP CALCULATIONS 1. Drilling below conductor casing (16 ") ASP = [(FG x 0.052) - 0.1] D = [(10.9 x 0.052) - 0.1] x 114 = 53 psi OR ASP = FPP - (0.1 x D) = 1086 - (0.1 x 2400') = 846 psi 2. Drilling below surface casing (9 5/8 ") ASP = [(FG x 0.052) - 0.1] D = [(14.5 x 0.052) - 0.1] x 2400 = 1570 psi OR ASP = FPP - (0.1 x D) = 3166 - (0.1 x 6997') = 2466 psi 3. Drilling below intermediate casing (7 ") ASP = FPP - (0.1 x D) = 3159 - (0.1 x 6981) - 2470 psi n 'nIMMA1 1/40,1k), • • Cementing Program: 9 5/8" Surface Casing run to 2469' MD / 2400' TVD. Cement from 2469' MD to 1969' (500' of fill) with Class G + Adds @ 15.8 PPG, and from 1969' to surface with Arctic Set Lite 3. Assume 300% excess annular volume in permafrost and 50% excess below the permafrost (1386' MD). Lead slurry: (1969'- 1386') X 0.3132 ft /ft X 1.5 (50% excess) = 273.9 ft below permafrost 1386' X 0.3132 ft /ft X 4 (300% excess) = 1736.3 ft above permafrost Total volume = 273.9 + 1736.3 = 2010.2 ft => 434 Sx @ 4.63 ft /sk System: 434 Sx ArcticSet Lite 3 @ 10.7 PPG yielding 4.45 ft /sk, Class G + 30% D053 thixotropic additive, 0.6% D046 antifoamer, 1.5% D079 extender, 1.5% S001 accelerator, 50% D124 extender and 9% BWOW D044 freeze suppressant Tail slurry: 500' X 0.3132 ft /ft X 1.5 (50% excess) = 234.9 ft annular volume 80' X 0.4341 ft /ft = 34.7 ft shoe joint volume Total volume = 234.9 + 34.7 = 269.6 ft => 230 Sx @ 1.17 ft /sk System: 230 Sx Class G + 0.2% D046 antifoamer, 0.3% D065 dispersant and 1% S001 accelerator @ 15.8 PPG yielding 1.17 ft /sk Pilot Hole Cementing Requirements Cement Plug #1: 8284' MD to 7513' MD = 600' Cement with Class G + additives @ 15.8 ppg. Assume 15% excess on open hole volume. Slurry: 600' X 0.41758 ft X 1.15 (15% excess) = 288 ft annular vol. 250 Sx @ 1.16 ft /sk. Cement Plug #2: 7513' MD to 6913' MD = 600' Cement with Class G + additives @ 17 ppg. Assume 15% excess on open hole volume. Slurry: 600' X 0.41758 ft "ft X 1.15 (15% excess) = 288.1 ft annular vol. 289 Sx @ 1.0 ft /sk. 7" Intermediate Casing run to 8235' MD / 6997' TVD Cement from 8235' MD to 5962 + / -' MD (minimum 500' MD above top of Nanuq reservoir) with Class G + adds @ 15.8 PPG. Assume 40% excess annular volume. Tail: (8235' -5962) X 0.1503 ft /ft X 1.4 (40% excess) = 478.3 ft annular vol. 80' X 0.2148 ft /ft = 17.2 ft shoe joint volume Total volume = 315.6 + 17.2 = 495.5 ft => 427 Sx @ 1.16 ft /sk System: 427 Sx Class G + 0.2% D046 antifoamer, 0.25% D065 dispersant, 0.25% D800 retarder and 0.18% D167 fluid loss additive @ 15.8 PPG yielding 1.16 ft3 /sk ' By Weight Of mix Water, all other additives are BWOCement ORIGINAL • 0 Second Stage: Cement from ports in a TAM port collar set 500' below the K2 interval to +1- 500' above the K2 interval with Class G + additives @ 15.8 ppg. Assume 40% excess annular volume Lead: (4751' - 3731') X 0.1503 ft /ft X 1.4 (40% excess) = 214.6 ft annular vol. Total Volume = 214.6 ft => 184 Sk @ 1.17 ft /sk System: 184 Sx Class G + 0.2% D046 antifoamer, 0.3% D065 dispersant and 1% S002 accelerator @ 15.8 PPG yielding 1.17 ft /sk 1 1""IriM 1 • 0 ConocoPhillips Alaska, Inc. CPAI Plan Report Company:' ConocoPhillips Alas Inc. Date: - 9/12/2007 Time: -_ 16:16:41 Page: 1 Field: Colville River Unit Co- ordinate(NE) Reference: Well:, Plan: C04-303, True North . Site Nanuq C04 Vertical (TVD) Reference: CD4- 303wp05 5 . . Well: Ptan:- CD4 -303 Section (VS) Reference: Well (0.00N,0.00E,358.95Azi) Wellpath: Plan: CD4 -303 Survey Calculation Method: Minimum Curvature Db: Oracle Plan: CD4- 303wpQ6 Date Composed: 8/7/2007 70deg Pilot Version: 7 Principal: Yes Tied -to: From Well Ref. Point Field: Colville River Unit North Slope Alaska United States Map System:US State Plane Coordinate System 1927 Map Zone: Alaska, Zone 4 Geo Datum: NAD27 (Clarke 1866) Coordinate System: Well Centre Sys Datum: Mean Sea Level Geomagnetic Model: bggm2007 Site: Nanuq CD4 Site Position: Northing: 5957526.10 ft Latitude: 70 17 32.966 N From: Map Easting: 378174.70 ft Longitude: 150 59 10.763 W Position Uncertainty: 0.00 ft North Reference: True Ground Level: 0.00 ft Grid Convergence: -0.93 deg Well: Plan: CD4 -303 Slot Name: Well Position: +N / -S -9.90 ft Northing: 5957516.83 ft - Latitude: 70 17 32.868 N +E / -W -38.80 ft Easting : 378135.75 ft . Longitude: 150 59 11.894 W Position Uncertainty: 0.00 ft Wellpath: Plan: CD4 -303 Drilled From: Well Ref. Point Tie-on Depth: 36.30 if Current Datum: CD4- 303wp05 Height 55.90 ft ' Above System Datum: Mean Sea Level Magnetic Data: 6/27/2005 Declination: 23.53 deg Field Strength: 57535 nT Mag Dip Angle: 80.58 deg Vertical Section: Depth From (TVD) +N / -S +E / -W Direction ft ft ft deg 36.30 0.00 0.00 358.95 Survey Program for Definitive Wellpath Date: 7/13/2007 Validated: No Version: 3 Actual From To Survey Toolcode Tool Name ft ft Plan Section Information MD Incl Azim TVD +N / -S +E / -W DLS, Build Turn TFO Target ft deg deg ft ft ft deg /100ft deg /100ft deg/100ft deg 36.30 0.00 0.00 36.30 0.00 0.00 0.00 0.00 0.00 0.00 401100 0.00 0.00 400.00 0.00 0.00 0.00 0.00 0.00 0.00 1702.92 19.54 358.19 1677.80 219.96 -6.95 1.50 1.50 0.00 0.00 6323.58 19.54 358.19 6032.25 1764.92 -55.79 0.00 0.00 0.00 0.00 7332.94 70.00 0.00 6725.90 2452.98 -61.50 5.00 5.00 0.18 2.21 8113.59 70.00 0.00 6992.90 3186.56 -61.50 0.00 0.00 0.00 0.00 CD4- 303wp06 T1 8134.06 70.00 0.00 6999.90 3205.79 -61.50 0.00 0.00 0.00 0.00 8284.06 70.00 0.00 7051.20 3346.74 -61.50 0.00 0.00 0.00 0.00 LI fI 1 \: WELL DETAILS Name +N / -S +E / -W Northing Fasting Latitude Longitude Slot P�6 CD4 -303w 7000. Plan: CD4 -303 -9.90 -38.80 5957516.83 378135.75 70 °17'32.868N 150 °59'11.894W N/A 3000 — — WELLPATH DETAILS Plan: CD4 -303 T ! 1 Rig: Y NP Ri Do on 19 M Azimuths to True North Ref. Datum: CD4-303wp05 55.90ft Magnetic North: 23.53° _ - -- -- , V.Section Origin Origin Starting Magnetic Field o 2000 - Angle +N / -S +E / -W From TVD Strength: 57535nT Dip Angle: 80.58° + 000 358.95° 0.00 0.00 36.30 Date: 6/27/2005 Model: bggm2007 ' 5004 } -t 1000 ' 4000 _ SURVEY PROGRAM i • 3000 ' Depth Fm Depth To Survey/Plan Tool P P Y 36.30 1000.00 Planned: CD4- 303wp06 V7 CB- GYRO -SS I I i 1 Foal_ I 1000.00 8284.06 Planned: CD4-303wp06 V7 MWD +1FR- AK- CAZ -SC 11 Ad too 0 I o— } j -2000 -1000 0 1000 2000 - - _ __ 0 - --- - - - -- - West( -) /East( +) 110000/in] } 1 2000 I — ' PLAN DETAILS CD4- 303wp06 I'I 70deg Pilot i g j 8 { I Version 7 - V 8/7/2007 • '2.,)'' Start Point 4000 MD Inc Azi TVD +N / -S +E / -W I H o 0o 36.30 0.00 0.00 36.30 0.00 0.00 5 1 HALL1BUp 1 ON ConocoPhillips j 1 Sperry Drilling Services 6000 . —. Alaska ! g o i_ , �\ 1 REFERENCE INFORMATION 1 1 : — I— CD4- 303wp06 I I 1 Co- ordinate (N/E) Reference: Well Centre: Plan: CD4 -303, True North Vertical (TVD) Reference: CD4- 303wp05 55.90 Section (VS) Reference: Slot - (0.00N,0.00E) -4000 -2000 0 2000 4000 6000 8000 Measured Depth Reference: CD4- 303wp05 55.90 0 ^ NAL 1 GJJ Vertical Section at 358 95° 12.00011/1n] Calculation Method: Minimum Curvature • 0 ConocoPhillips Alaska, Inc. CPAI Plan Report Company: ConocoPhillipsAlaska Inc. e:Dat,, 9/12/2007 Ti 16 :16:41 Page:', 2 Field: Colville River Unit Co- ordinate(NE) Reference: Well: Plan: CD4 -303, True North Site: Nanuct CD4 Vertical (TVD) Reference: CD4•303wp05 55.9 Well: Plan CD4 - 303 Sectiou,(VS),Reference: Well (0.00N,0'.d0E,358.95Azi) Weipath: Plan`, CD4 -303 Survey Calculation Method: Minimum Curvature Db: Oracle Survey MD Incl Azim TVD Sys TVD N /S, E/W Mapisi , MapE, DLS TFO Commect ft' deg deg ft if ft ft ft ft deg /100ft deg 36.30 0.00 0.00 36.30 -19.60 0.00 0.00 5957516.83 • 378135.75 • 0.00 0.00 100.00 0.00 0.00 100.00 44.10 0.00 0.00 5957516.83 378135.75 0.00 0.00 200.00 0.00 0.00 200.00 144.10 0.00 0.00 5957516.83 378135.75 0.00 0.00 300.00 0.00 0.00 300.00 244.10 0.00 0.00 5957516.83 378135.75 0.00 0.00 400.00 • 0.00 0.00 400.00 344.10 0.00 0.00 5957516.83 378135.75 0.00 0.00 KOP . 500.00 1.50 358.19 499.99 444.09 1.31 -0.04 5957518.14 378135.73 1.50 0.00 600.00 3.00 358.19 599.91 544.01 5.23 -0.17 5957522.06 378135.67 1.50 0.00 700.00 4.50 358.19 699.69 643.79 11.77 -0.37 5957528.60 378135.57 1.50 0.00 800.00 6.00 358.19 799.27 743.37 20.91 -0.66 5957537.75 378135.43 1.50 0.00 900.00 7.50 358.19 898.57 842.67 32.66 -1.03 5957549.50 378135.25 1.50 0.00 1000.00 9.00 358.19 997.54 941.64 47.00 -1.49 5957563.85 378135.03 1.50 0.00 1100.00 10.50 358.19 1096.09 1040.19 63.93 -2.02 5957580.78 378134.77 1.50 0.00 1200.00 12.00 358.19 1194.16 1138.26 83.43 -2.64 5957600.28 378134.47 1.50 0.00 1300.00 13.50 358.19 1291.70 1235.80 105.49 -3.33 5957622.35 378134.13 1.50 0.00 1400.00 15.00 358.19 1388.62 1332.72 130.09 -4.11 5957646.96 378133.75 1.50 0.00 1500.00 16.50 358.19 1484.86 1428.96 157.22 -4.97 5957674.10 378133.33 1.50 0.00 1600.00 18.00 358.19 1580.36 1524.46 186.86 -5.91 5957703.74 378132.87 1.50 0.00 1700.00 19.50 358.19 1675.05 1619.15 218.98 -6.92 5957735.88 378132.38 1.50 0.00 1702.92 19.54 358.19 1677.80 1621.90 219.96 -6.95 5957736.85 378132.36 1.50 0.00 1800.00 19.54 358.19 1769.29 1713.39 252.42 -7.98 5957769.32 378131.86 0.00 0.00 1900.00 19.54 358.19 1863.53 1807.63 285.85 -9.04 5957802.77 378131.35 0.00 0.00 2000.00 19.54 358.19 1957.76 1901.86 319.29 -10.09 5957836.22 378130.83 0.00 0.00 2100.00 19.54 358.19 2052.00 1996.10 352.73 -11.15 5957869.66 378130.32 0.00 0.00 2200.00 19.54 358.19 2146.24 2090.34 386.16 -12.21 5957903.11 378129.80 0.00 0.00 2300.00 19.54 358.19 2240.48 2184.58 419.60 -13.26 5957936.55 378129.29 0.00 0.00 2400.00 19.54 358.19 2334.72 2278.82 453.03 -14.32 5957970.00 378128.78 0.00 0.00 2469.27 19.54 358.19 2400.00 2344.10 476.20 -15.05 5957993.17 378128.42 0.00 0.00 9 5/8" x 12 1/4" 2477.65 19.54 358.19 2407.90 2352.00 479.00 -15.14 5957995.97 378128.38 0.00 0.00 C -30 2500.00 19.54 358.19 2428.96 2373.06 486.47 -15.38 5958003.45 378128.26 0.00 0.00 2600.00 19.54 358.19 2523.20 2467.30 519.91 -16.44 5958036.89 378127.75 0.00 0.00 2700.00 19.54 358.19 2617.44 2561.54 553.34 -17.49 5958070.34 378127.23 0.00 0.00 2800.00 19.54 358.19 2711.67 2655.77 586.78 -18.55 5958103.78 378126.72 0.00 0.00 2866.03 19.54 358.19 2773.90 2718.00 608.86 -19.25 5958125.87 378126.38 0.00 0.00 C -20 2900.00 19.54 358.19 2805.91 2750.01 620.21 -19.61 5958137.23 378126.20 0.00 0.00 3000.00 19.54 358.19 2900.15 2844.25 653.65 -20.66 5958170.67 378125.69 0.00 0.00 3100.00 19.54 358.19 2994.39 2938.49 687.09 -21.72 5958204.12 378125.17 0.00 0.00 3200.00 19.54 358.19 3088.63 3032.73 720.52 -22.78 5958237.57 378124.66 0.00 0.00 3300.00 19.54 358.19 3182.87 3126.97 753.96 -23.83 5958271.01 378124.14 0.00 0.00 3400.00 19.54 358.19 3277.11 3221.21 787.39 -24.89 5958304.46 378123.63 0.00 0.00 3500.00 19.54 358.19 3371.34 3315.44 820.83 -25.95 5958337.90 378123.11 0.00 0.00 3600.00 19.54 358.19 3465.58 3409.68 854.27 -27.00 5958371.35 378122.60 0.00 0.00 3700.00 19.54 358.19 3559.82 3503.92 887.70 -28.06 5958404.80 378122.08 0.00 0.00 3800.00 19.54 358.19 3654.06 3598.16 921.14 -29.12 5958438.24 378121.57 0.00 0.00 3900.00 19.54 358.19 3748.30 3692.40 954.57 -30.18 5958471.69 378121.05 0.00 0.00 3975.98 19.54 358.19 3819.90 3764.00 979.98 -30.98 5958497.10 378120.66 0.00 0.00 K -3 4000.00 19.54 358.19 3842.54 3786.64 988.01 -31.23 5958505.13 378120.54 0.00 0.00 4100.00 19.54 358.19 3936.78 3880.88 1021.45 -32.29 5958538.58 378120.02 0.00 0.00 4198.82 19.54 358.19 4029.90 3974.00 1054.49 -33.33 5958571.63 378119.52 0.00 0.00 Basal K -3 4200.00 19.54 358.19 4031.01 3975.11 1054.88 -33.35 5958572.03 378119.51 0.00 0.00 4231.71 19.54 358.19 4060.90 4005.00 1065.48 -33.68 5958582.63 378119.35 0.00 0.00 K -2 4300.00 19.54 358.19 4125.25 4069.35 1088.32 -34.40 5958605.47 378119.00 0.00 0.00 4348.44 19.54 358.19 4170.90 4115.00 1104.51 -34.92 5958621.67 378118.75 0.00 0.00 Base K -2 4400.00 19.54 358.19 4219.49 4163.59 1121.75 -35.46 5958638.92 378118.48 0.00 0.00 ORIGINAL • • ConocoPhillips Alaska, Inc. CPAI Plan Report Company: ConocoPhillips Alaska Inc, Date: 9/12/2007 Time: 1',6:16:41 Page: - - 3 Field: Colville, River Unit Co- ordinate(NE) Reference: Well!: Plan;',, CD4 -303 True North, Site: Nanuq CD4 Vertical (ITVD) Reference: CD4 303wp05 55.9 - Well: Plan: C04 -303 Section (VS) Reference: Well (0.00N!,0.00E,358.9 AVellpath: Plan: CD4 -303 Survey Calculation Method: Minimum Curvature Db: Oracle Survey MD Incl , , TVD Sys TVD N/S E/W ' MapN MapE DES TFO Commett ' ft deg deg ft ft ft ft ft ft deg /100ft deg 4500.00 19.54 358.19 4313.73 4257.83 1155.19 -36.52 5958672.36 378117.97 0.00 0.00 4600.00 19.54 358.19 4407.97 4352.07 1188.62 -37.57 5958705.81 378117.45 0.00 0.00 4700.00 19.54 358.19 4502.21 4446.31 1222.06 -38.63 5958739.25 378116.94 0.00 0.00 4800.00 19.54 358.19 4596.45 4540.55 1255.50 -39.69 5958772.70 378116.42 0.00 0.00 4900.00 19.54 358.19 4690.69 4634.79 1288.93 -40.75 5958806.15 378115.91 0.00 0.00 5000.00 19.54 358.19 4784.92 4729.02 1322.37 -41.80 5958839.59 378115.39 0.00 0.00 5100.00 19.54 358.19 4879.16 4823.26 1355.80 -42.86 5958873.04 378114.88 0.00 0.00 5200.00 19.54 358.19 4973.40 4917.50 1389.24 -43.92 5958906.48 378114.36 0.00 0.00 5300.00 19.54 358.19 5067.64 5011.74 1422.68 -44.97 5958939.93 378113.85 0.00 0.00 5400.00 19.54 358.19 5161.88 5105.98 1456.11 -46.03 5958973.38 378113.33 0.00 0.00 5500.00 19.54 358.19 5256.12 5200.22 1489.55 -47.09 5959006.82 378112.82 0.00 0.00 5600.00 19.54 358.19 5350.36 5294.46 1522.98 -48.14 5959040.27 378112.30 0.00 0.00 5700.00 19.54 358.19 5444.59 5388.69 1556.42 -49.20 5959073.71 378111.79 0.00 0.00 5800.00 19.54 358.19 5538.83 5482.93 1589.86 -50.26 5959107.16 378111.27 0.00 0.00 5900.00 19.54 358.19 5633.07 5577.17 1623.29 -51.32 5959140.61 378110.76 0.00 0.00 6000.00 19.54 358.19 5727.31 5671.41 1656.73 -52.37 5959174.05 378110.24 0.00 0.00 6100.00 19.54 358.19 5821.55 5765.65 1690.16 -53.43 5959207.50 378109.73 0.00 0.00 6104.62 19.54 358.19 5825.90 5770.00 1691.71 -53.48 5959209.04 378109.71 0.00 0.00 Albian 97 6200.00 19.54 358.19 5915.79 5859.89 1723.60 -54.49 5959240.94 378109.22 0.00 0.00 6300.00 19.54 358.19 6010.03 5954.13 1757.04 -55.54 5959274.39 378108.70 0.00 0.00 6323.58 19.54 358.19 6032.25 5976.35 1764.92 -55.79 5959282.28 378108.58 0.00 0.00 6400.00 23.36 358.56 6103.36 6047.46 1792.85 -56.58 5959310.22 378108.25 5.00 2.21 6462.35 26.48 358.79 6159.90 6104.00 1819.12 -57.18 5959336.48 378108.07 5.00 1.86 Albian 96 (Nanuq) 6500.00 28.36 358.90 6193.32 6137.42 1836.45 -57.53 5959353.82 378108.00 5.00 1.66 6600.00 33.36 359.15 6279.13 6223.23 1887.72 -58.40 5959405.09 378107.97 5.00 1.55 6700.00 38.36 359.34 6360.15 6304.25 1946.27 -59.17 5959463.64 378108.15 5.00 1.34 6800.00 43.36 359.49 6435.76 6379.86 2011.66 -59.83 5959529.03 378108.54 5.00 1.19 6900.00 48.36 359.61 6505.39 6449.49 2083.40 -60.39 5959600.76 378109.14 5.00 1.07 7000.00 53.35 359.72 6568.50 6512.60 2160.93 -60.84 5959678.28 378109.95 5.00 0.99 7100.00 58.35 359.81 6624.61 6568.71 2243.66 -61.18 5959761.00 378110.96 5.00 0.92 7200.00 63.35 359.90 6673.30 6617.40 2330.97 -61.39 5959848.30 378112.15 5.00 0.87 7300.00 68.35 359.98 6714.19 6658.29 2422.19 -61.49 5959939.50 378113.53 5.00 0.83 7332.94 70.00 0.00 6725.90 6670.00 2452.98 -61.50 5959970.28 378114.03 5.00 0.79 7373.87 70.00 0.00 6739.90 6684.00 2491.45 -61.50 5960008.74 378114.65 0.00 0.00 Top HRZ 7400.00 70.00 0.00 6748.84 6692.94 2516.00 -61.50 5960033.28 378115.05 0.00 0.00 7500.00 70.00 0.00 6783.04 6727.14 2609.97 -61.50 5960127.23 378116.57 0.00 0.00 7600.00 70.00 0.00 6817.24 6761.34 2703.94 -61.50 5960221.18 378118.09 0.00 0.00 7700.00 70.00 0.00 6851.44 6795.54 2797.91 -61.50 5960315.13 378119.62 0.00 0.00 7771.51 70.00 0.00 6875.90 6820.00 2865.10 -61.50 5960382.31 378120.71 0.00 0.00 Base HRZ 7800.00 70.00 0.00 6885.64 6829.74 2891.87 -61.50 5960409.08 378121.14 0.00 0.00 7900.00 70.00 0.00 6919.85 6863.95 2985.84 -61.50 5960503.03 378122.66 0.00 0.00 7900.16 70.00 0.00 6919.90 6864.00 2985.99 -61.50 5960503.18 378122.67 0.00 0.00 K -1 8000.00 70.00 0.00 6954.05 6898.15 3079.81 -61.50 5960596.98 378124.19 0.00 0.00 8014.18 70.00 0.00 6958.90 6903.00 3093.14 -61.50 5960610.31 378124.40 0.00 0.00 Kuparuk D 8100.00 70.00 0.00 6988.25 6932.35 3173.78 -61.50 5960690.93 378125.71 0.00 0.00 8113.59 70.00 0.00 6992.90 6937.00 3186.56 -61.50 5960703.70 378125.92 0.00 0.00 CD4- 303wp06 T1 8134.06 70.00 0.00 6999.90 6944.00 3205.79 -61.50 5960722.93 378126.23 0.00 0.00 8200.00 70.00 0.00 7022.45 6966.55 3267.75 -61.50 5960784.88 378127.23 0.00 0.00 8284.06 70.00 0.00 7051.20 6995.30 3346.74 -61.50 5960863.85 378128.51 0.00 0.00 7 "x 8 3/4" R. I 1 L • • ConocoPhillips Alaska, Inc. CPAI Plan Report Company: ConocoPhillips Alaska Inc. Date: 9/12/2007 Time: 16:16:41 - Page:, 4 Field: Colville River Unit - Co- ordinate(NE) Reference: Well: Plan: CD4 -303, True North Site: Nanuq CD4 Vertical (TVD) Reference: CD4- 303wp05 55.9 Well: Plan: CD4 -303 Section (VS): Reference: Well (04/ON,0.00E,358.95Azi) Wellpath: Plan:, CD4 -303 SurveyCakulation Method: ',Minimum Curvature Db: Oracle Targets Map aMap <- -- Latitude - - -> <-- Longitude --> Name Description TVD +N / -S +E / -W Northing Easting ',!Deg Min Sec Deg Min Sec Dip. Dir. if ft ft ft ft CD4- 303wp06 T1 6992.90 3186.56 -61.50 5960703.70 378125.92 70 18 4.208 N 150 59 13.687 W -Plan hit target Annotation MD TVD ft ft 400.00 400.00 KOP Casing Points MD TVD ., Diameter Hole Size Name ft ft , P in in 2469.27 2400.00 9.625 12.250 9 5/8" x 12 1/4" 8284.06 7051.20 7.000 8.750 7 "x 8 3/4" Formations MD TVD Formations Lithology Dip. Angle Dip Direction ft ft deg ' deg 2477.65 2407.90 C -30 0.00 0.00 2866.03 2773.90 C -20 0.00 0.00 3975.98 3819.90 K -3 0.00 0.00 4198.82 4029.90 Basal K -3 0.00 0.00 4231.71 4060.90 K -2 0.00 0.00 4348.44 4170.90 Base K -2 0.00 0.00 6104.62 5825.90 Albian 97 0.00 0.00 6462.35 6159.90 Albian 96 (Nanuq) 0.00 0.00 7373.87 6739.90 Top HRZ 0.00 0.00 7771.51 6875.90 Base HRZ 0.00 0.00 7900.16 6919.90 K -1 0.00 0.00 8014.18 6958.90 Kuparuk D 0.00 0.00 8113.59 6992.90 Kuparuk C 0.00 0.00 ORIGINAL Conoco Phillips PLAN DETAILS Alaska CD4-303wp06 P Quarter Mile 70deg Pilot (1320 feet) HAI-1-111URTON radius plot Version 7 8/7/2007 6000 • 5000 CD4-208(CD4-208) 7 4000 (CD4 -208PB 1) , • o CD4 -210 CD4 -210 CD4- 303wp06 Z 3000 \ � . v) CD4 -306 (CD4 -306) • 2000 CD 1000 ------ ------------ \ ,` ` - - -- - -- � CD4 - 320 ( 4 - 320PB 1) 1 \ / r . , CD4 -320 (CD4 -320) I 1 L \, 1 I 1 I -4000 -3000 -2000 -1000 0 1000 2000 3000 4000 West( -) /East( +) [1000ft/in] OFIGINAL • • ConocoPhillips Alaska, Inc. CPAI Plan Report Company: ConocoPhillips Alaska Inc. Date: 9/12/2007 Tune: 16:50:03 Page: 1 Field: Colville River Unit Co-ordinate(NE) Reference: Well: Plan: CD4 - True North Site: Nanuq CD4 Vertical (TVD) Reference: CD4- 303wp05 • Well: " Plan,", CD4 -303 Section (VS) Reference: „ Well (0.00N,0.0QE,359.57Azi) Wellpath: Plan :'CD4- 303ST1 Survey Calculation Method: Minimum Curvature Dh: Oracle Plan: CD4- 303ST1wp06 Date Composed: 8/8/2007 Version: 6 Principal: Yes Tied -to: From: Definitive Path Field: Colville River Unit North Slope Alaska United States Map System:US State Plane Coordinate System 1927 Map Zone: Alaska, Zone 4 Geo Datum: NAD27 (Clarke 1866) Coordinate System: Well Centre Sys Datum: Mean Sea Level Geomagnetic Model: bggm2007 Site: Nanuq CD4 Site Position: Northing: 5957526.10 ft Latitude: 70 17 32.966 N From: Map Easting: 378174.70 ft Longitude: 150 59 10.763 W Position Uncertainty: 0.00 ft North Reference: True Ground Level: 0.00 ft Grid Convergence: -0.93 deg Well: Plan: CD4 -303 Slot Name: Well Position: +N / -S -9.90 ft Northing: 5957516.83 ft Latitude: 70 17 32.868 N +E / -W -38.80 ft Easting : 378135.75 ft Longitude: 150 59 11.894 W Position Uncertainty: 0.00 ft Wellpath: Plan: CD4- 303ST1 Drilled From: Plan: CD4 -303 Tie -on Depth: 7300.00 ft Current Datum: CD4- 303wp05 Height 55.90 ft Above System Datum: Mean Sea Level Magnetic Data: 8/7/2007 Declination: 22.50 deg Field Strength: 57558 nT Mag Dip Angle: 80.65 deg Vertical Section: Depth From (TVD) +N / -S +E / -W Direction ft ft ft deg 36.30 0.00 0.00 359.57 Survey Program for Definitive Wellpath Date: 8/8/2007 Validated: No Version: 3 Actual From To Survey Toolcode Tool Name ft ft Plan Section Information MD Intl _ Azim TVD +N / -S +E / -W DLS Build', I, Turn TFO Target ft deg deg ft ft ft deg /100ft deg /100ft deg /100ft deg 7300.00 68.35 359.98 6714.19 2422.19 -61.49 0.00 0.00 0.00 0.00 7400.00 64.90 2.18 6753.86 2513.95 -59.79 4,00, -3.45 2.21 150.00 7500.00 64.97 6.60 6796.24 2604.24 -52.85 4.00 0.07 4.42 90.00 7532.52 66.10 5.58 6809.71 2633.67 -49.72 4.50 3.48 -3.14 -39.65 7716.59 66.10 5.58 6884.28 2801.17 -33.36 0.00 0.00 0.00 0.00 8269.27 90.23 359.38 6996.90 3337.38 -11.47 4.50 4.37 -1.12 -14.88 CD4 303ST1wp06 Heel 12235.98 90.23 359.38 6980.90 7303.82 -54.69 0.00 0.00 0.00 0.00 CD4- 303ST1wp06 Toe ORIGINAL g g Longitude CD4- 303ST1 1 WELL DETAILS I Name +N / -S +E/ -W Northing Easting Latitude Lon nude Slot wp06 Plan: CD4 -303 -9.90 T 38.80 5957516.83 378135.75 70°17'32.868N 150 °59'11.894W N/A I WELLPATH DETAILS F _ 6000— ' T Plan: CD4- 303ST1 I Parent Wellpath: Plan: CD4 -303 M Azimuths to True North Tie on MD: 7300.00 Magnetic North: 22.50° a Rig: Doyon 19 Magnetic Field § Ref. Datum: CD4- 303wp05 55.90ft Strength: 57558nT a 4000 V.Section Origin Origin Starting m Ori m Startin n Ori Date: 8/7 /2007 Plan. CD4 -303 S Dip Angle: 80.65° (Plan: CD4 -303) Angle +N / -S +E / -W From TVD Model. bggm2007 li ! 359.57° 0.00 0.00 36.30 ti SURVEY PROGRAM 2000 Depth Fm Depth To Survey/Plan Tool L 7300.00 12235.98 Planned: CD4- 303STIwp06 V6 MWD +IFR- AK- CAZ -SC //� hQl I i O rr 0— .. ' -4000 -2000 0 2000 4000 0° I, _ - -- - --- - - - - - West( -) /East( +) 12000fthn] 1 PLAN DETAILS 2000 , — __ —__ II CD4- 303ST1wp06 e Version 6 - 8/8/2007 Start Point 2� I I MD Inc Azi TVD +N / -S +E / -W 2 • 4000 — — 7300.00 68.35 359.98 6714.19 2422.19 -61.49 H - - -- - --- - - _ - i- r4i_Liil..l `Y`Qi"� a ConOCOPh llips Sperry Drilling Services Alaska 6000 _ CD4-303ST1 .06 � CD4 -303 - - REFERENCE INFORMATION I : c Plan: CD4 -303 (Plan: CD4 -303) I ° o ° N Co- ordinate (N /E) Reference: Well Centre: Plan: CD4 -303, True North o � Vertical (TVD) Reference: CD4- 303wp05 55 90 Section (VS) Reference: Slot - (0.00N,O.00E) t G 1 ti/\ 0 0 2000 4000 6000 8000 1000C Measured Depth Reference: CD4- 303wp05 55.90 Vertical Section at 359 57° (znoofth„] Calculation Method: Minimum Curvature • • ConocoPhillips Alaska, Inc. CPAI Plan Report Company: ConocoPhillips Alaska inc. Date: 9/12/2007 -- Time: 16:50:03 Page: 2 Field':,, Colville ,River Unit Co -ordinate(1 )',Reference: Well: Plan: CD4- 303 „True North Site Nanuq CD4 Vertical (TVD),Reference:, CD4- 303wp05 Well: Plan: :CD4 -303 Section (VS) Reference: Well (0'.00N,0.0t) Wellpath: Plan: CD4'.- 303ST1 Survey Calculation Method: - Minimum Curvature Db: Oracle Survey MD Ind Azim TVD Sys,,TVD N/S E/W MapN MapE DLS TFO Commedt ft deg deg ft ft ft ft ft ft deg /1008 deg 2469.27 19.54 358.19 2400.00 2344.10 476.20 -15.05 5957993.17 378128.42 0.00 0.00 9 5/8" x 12 1/4" 7300.00 68.35 359.98 6714.19 6658.29 2422.19 -61.49 5959939.50 378113.53 1.01 2.21 KOP 7366.36 66.06 1.43 6739.90 6684.00 2483.36 -60.75 5960000.65 378115.27 4.00 150.00 Top HRZ 7400.00 64.90 2.18 6753.86 6697.96 2513.95 -59.79 5960031.21 378116.73 4.00 149.44 7500.00 64.97 6.60 6796.24 6740.34 2604.24 -52.85 5960121.37 378125.12 4.00 90.00 7532.52 66.10 5.58 6809.71 6753.81 2633.67 -49.72 5960150.74 378128.74 4.50 320.35 7600.00 66.10 5.58 6837.04 6781.14 2695.07 -43.72 5960212.03 378135.73 0.00 0.00 7695.90 66.10 5.58 6875.90 6820.00 2782.34 -35.20 5960299.14 378145.66 0.00 0.00 Base HRZ 7700.00 66.10 5.58 6877.56 6821.66 2786.07 -34.84 5960302.86 378146.08 0.00 0.00 7716.59 66.10 5.58 6884.28 6828.38 2801.17 -33.36 5960317.94 378147.80 0.00 0.00 7800.00 69.73 4.55 6915.64 6859.74 2878.14 -26.55 5960394.78 378155.86 4.50 345.12 7812.46 70.27 4.40 6919.90 6864.00 2889.81 -25.64 5960406.44 378156.96 4.50 345.50 K -1 7900.00 74.09 3.38 6946.68 6890.78 2972.94 -19.99 5960489.46 378163.95 4.50 345.55 7947.62 76.17 2.84 6958.90 6903.00 3018.89 -17.49 5960535.36 378167.20 4.50 345.87 Kuparuk D 8000.00 78.46 2.26 6970.40 6914.50 3069.94 -15.22 5960586.36 378170.29 4.50 346.01 8100.00 82.83 1.17 6986.66 6930.76 3168.54 -12.27 5960684.89 378174.84 4.50 346.13 8161.45 85.52 0.52 6992.90 6937.00 3229.67 -11.37 5960745.99 378176.73 4.50 346.31 Kuparuk C 8200.00 87.20 0.11 6995.35 6939.45 3268.13 -11.16 5960784.44 378177.57 4.50 346.38 8235.00 88.73 359.74 6996.59 6940.69 3303.11 -11.21 5960819.41 378178.09 4.50 346.40 7 "x 8 3/4" 8269.27 90.23 359.38 6996.90 6941.00 3337.38 -11.47 5960853.68 378178.38 4.50 346.42 CD4- 303ST1wp06 Heel 8300.00 90.23 359.38 6996.78 6940.88 3368.11 -11.81 5960884.40 378178.54 0.00 180.00 8400.00 90.23 359.38 6996.37 6940.47 3468.10 -12.90 5960984.39 378179.07 0.00 180.00 8500.00 90.23 359.38 6995.97 6940.07 3568.09 -13.99 5961084.38 378179.60 0.00 180.00 8600.00 90.23 359.38 6995.57 6939.67 3668.09 -15.08 5961184.37 378180.14 0.00 180.00 8700.00 90.23 359.38 6995.16 6939.26 3768.08 -16.17 5961284.36 378180.67 0.00 180.00 8800.00 90.23 359.38 6994.76 6938.86 3868.07 -17.26 5961384.35 378181.20 0.00 180.00 8900.00 90.23 359.38 6994.36 6938.46 3968.06 -18.34 5961484.34 378181.73 0.00 180.00 9000.00 90.23 359.38 6993.95 6938.05 4068.06 -19.43 5961584.33 378182.26 0.00 180.00 9100.00 90.23 359.38 6993.55 6937.65 4168.05 -20.52 5961684.32 378182.79 0.00 180.00 9200.00 90.23 359.38 6993.15 6937.25 4268.04 -21.61 5961784.31 378183.33 0.00 180.00 9300.00 90.23 359.38 6992.74 6936.84 4368.04 -22.70 5961884.30 378183.86 0.00 180.00 9400.00 90.23 359.38 6992.34 6936.44 4468.03 -23.79 5961984.29 378184.39 0.00 180.00 9500.00 90.23 359.38 6991.94 6936.04 4568.02 -24.88 5962084.28 378184.92 0.00 180.00 9600.00 90.23 359.38 6991.53 6935.63 4668.02 -25.97 5962184.27 378185.45 0.00 180.00 9700.00 90.23 359.38 6991.13 6935.23 4768.01 -27.06 5962284.26 378185.98 0.00 180.00 9800.00 90.23 359.38 6990.73 6934.83 4868.00 -28.15 5962384.25 378186.52 0.00 180.00 9900.00 90.23 359.38 6990.32 6934.42 4968.00 -29.24 5962484.24 378187.05 0.00 180.00 10000.00 90.23 359.38 6989.92 6934.02 5067.99 -30.33 5962584.23 378187.58 0.00 180.00 10100.00 90.23 359.38 6989.52 6933.62 5167.98 -31.42 5962684.21 378188.11 0.00 180.00 10200.00 90.23 359.38 6989.11 6933.21 5267.98 -32.51 5962784.20 378188.64 0.00 180.00 10300.00 90.23 359.38 6988.71 6932.81 5367.97 -33.60 5962884.19 378189.17 0.00 180.00 10400.00 90.23 359.38 6988.31 6932.41 5467.96 -34.69 5962984.18 378189.71 0.00 180.00 10500.00 90.23 359.38 6987.90 6932.00 5567.96 -35.78 5963084.17 378190.24 0.00 180.00 10600.00 90.23 359.38 6987.50 6931.60 5667.95 -36.87 5963184.16 378190.77 0.00 180.00 10700.00 90.23 359.38 6987.10 6931.20 5767.94 -37.95 5963284.15 378191.30 0.00 180.00 10800.00 90.23 359.38 6986.69 6930.79 5867.94 -39.04 5963384.14 378191.83 0.00 180.00 10900.00 90.23 359.38 6986.29 6930.39 5967.93 -40.13 5963484.13 378192.36 0.00 180.00 11000.00 90.23 359.38 6985.89 6929.99 6067.92 -41.22 5963584.12 378192.90 0.00 180.00 11100.00 90.23 359.38 6985.48 6929.58 6167.92 -42.31 5963684.11 378193.43 0.00 180.00 11200.00 90.23 359.38 6985.08 6929.18 6267.91 -43.40 5963784.10 378193.96 0.00 180.00 11300.00 90.23 359.38 6984.68 6928.78 6367.90 -44.49 5963884.09 378194.49 0.00 180.00 11400.00 90.23 359.38 6984.27 6928.37 6467.90 -45.58 5963984.08 378195.02 0.00 180.00 11500.00 90.23 359.38 6983.87 6927.97 6567.89 -46.67 5964084.07 378195.55 0.00 180.00 OR tGI N AL • • ConocoPhillips Alaska, Inc. CPAI Plan Report Company: ConocoPhillips, Alaska Inc., Date: ' 9/12/2007 Time: 16:50:03 Page: 3 Field: MColville River Unit Co- ordinate(NE) Reference: Well: Plan;, CD4 -303, True North • Site: Nanuq CD4 Vertical (TVD) Reference: CD4- 30 55.9 ,Well: Plan: CD4 -303 Section (VS) Reference: Well (0.00N,0.00E,359.57Azi Wellpath: Plan: CD4- 303ST1 Survey Calculation Method: Minimum Curvature Db: Oracle Survey MD fncl Azim TVD Sys TVD N/S E/W MapN MapE DLS TFO - Commer t ft 'deg deg -ft II ft ft ft ft ft deg /100ft deg 11600.00 9023 359.38 6983.47 6927.57 6667.88 -47.76 5964184.06 378196.09 0.00 180.00 11700.00 90.23 359.38 6983.06 6927.16 6767.88 -48.85 5964284.05 378196.62 0.00 180.00 11800.00 90.23 359.38 6982.66 6926.76 6867.87 -49.94 5964384.04 378197.15 0.00 180.00 11900.00 90.23 359.38 6982.26 6926.36 6967.86 -51.03 5964484.02 378197.68 0.00 180.00 12000.00 90.23 359.38 6981.85 6925.95 7067.86 -52.12 5964584.01 378198.21 0.00 180.00 12100.00 90.23 359.38 6981.45 6925.55 7167.85 -53.21 5964684.00 378198.74 0.00 180.00 12200.00 90.23 359.38 6981.05 6925.15 7267.84 -54.30 5964783.99 378199.28 0.00 180.00 • 12235.98 90.23 359.38 6980.90 . 6925.00 7303.82 -54.69 5964819.97 378199.47 0.00 180.00 CD4- 303ST1wpC6 Toe Targets 'Map Map _ <- -- Latitude''- -> <-- Longitude - -> Name Description TVD +N/-S +E / -W Northing 'Easting Deg Min ' Sec Deg Min H,See Dip. Dir. ft ft ft ft H,1h ft CD4- 303ST1wp06 Toe 6980.90 7303.82 -54.69 5964819.97 378199.47 70 18 44.701 N 150 59 13.489 W CD4- 303ST1wp06 Heel 6996.90 3337.38 -11.47 5960853.68 378178.38 70 18 5.691 N 150 59 12.228 W Annotation MD 'TVD ft ft 7300.00 6714.19 KOP Casing Points MD TVD Diameter Hole Size Name ft ft in in . 2469.27 2400.00 9.625 12.250 9 5/8" x 12 1/4" 8235.00 6996.59 7.000 8.750 7 "x 8 3/4" 12235.98 6980.90 4.500 6.750 4 1/2" x 6 3/4" Formations MD TVD Formations Lithology Dip Angle, Dip Direction ft ft deg deg 0.00 C -30 0.00 0.00 0.00 C -20 0.00 0.00 0.00 K -3 0.00 0.00 0.00 Basal K -3 0.00 0.00 0.00 K -2 0.00 0.00 0.00 Base K -2 0.00 0.00 0.00 Albian 97 0.00 0.00 0.00 Albian 96 (Nanuq) 0.00 0.00 7366.36 6739.90 Top HRZ 0.00 0.00 7695.90 6875.90 Base HRZ 0.00 0.00 7812.46 6919.90 K -1 0.00 0.00 7947.62 6958.90 Kuparuk D 0.00 0.00 8161.45 6992.90 Kuparuk C 0.00 0.00 0.00 LCU 0.00 0.00 • r)R\G11\1 4\ . Conoco-Phillips PLAN DETAILS _ Alaska CD4 -303 ST 1 06 � Quarter Mile HALL,®LIR,ON (1320 feet) e Version 6 radius plot 8/8/2007 9089 \ - - -- 1 \ , i 7575 \. � CD4- 303ST1wp06 7 6060 \ \ I CD2 -57 (CD2 -57) CD2 -27 (CD2 -27) 4545 CD4 -208 (CD4 -208) ._ - - - \ _ - -__1 CD4 -208 (CD4- 208PB1) CD2 -53 (CD2 -53) • CD4 -210 (CD4 -210) 3030 \ '\. —. -... — ! 1 I 0 I CD4 -320 (CD4 -320) ' CD4 -306 (CD4 -306) 1515 CD4 -320 (CD4-320PB1) I : R I G 1 t\1 A L -6060 -4545 -3030 -1515 0 1515 3030 4545 6060 West( -) /East( +) [ft] • Opernlw: Conocabillpr Alaska Inc. Gild Comedian: -093 ° lab No. MN /A Net& Colville Wes Unit MaaneN< DecinaMn: Data ° APE No: MN /A Wei; CDi-SOSSGsrp06 Dip: ° API No: MN /A Ng: MN /A 000.9 per 100 ft System (IVD) Reference: Moan Sou Level Surges Location Original VS Plane: 359.57 • Potent Wet: Plan: COM-003 A: 378135.7E N View VS Plane: 359.57 ° Ra Height 55.90 N Y. 5957516.85 ft Old System: API Based / FPS Secion INS) Reference: WELL Comments: POOL: Plan View a 1 g g S CD4- 303ST1wp06 Plan: 6900' to 6950' TVDss `" W i ; C C ; " CD4 -320: 6900' to 6950' TVDss M _...._ .._ .,: ............ .._,..._...,., .. .,, , ,..,_., ..._ _._ _.__....__ CD4 -306: 6900' to 6950' TVDss 1 1 CD2 -53: 6900' to 6950' TVDss _ _ _ - -__ _ 5966200 i 7 1 il CD2 -57: 6900' to 6950' TVDss — 5965200 ( / i - • CD2-27: 6900' to 6950' TVDss I i + ...__.__,.__......._ .............. ........._.,.._......._........ - .............. _.. _..___ __....._... .. € F - -- -- - — _____° - 5964200 o Z - ....... ......... ........_ ......... ....._. I .5963200 + — — C043035TIwp06 Plan �-CD4320 _ ' Section View' — CD4 -306 — . —CD253 • Heel Circle (1320' radius) • Toe Circle (1320' radius) —.— CD2 -57 CO2 -27 _.......__.._..._.. ......._._._.._....__ ..............._......_.....—__._.... ......_....._............_...._ .........._....._._ °...T I .- 5961200 1 4 ____ _.._...._ _.___.__ ......... - 5960200 4 \ . �..�• ................. 5959200 • 1 ^� ° c r _ a s20 : i __. 5957200 N I 1-) East Hi /West It p 4 0 o M l J C P 2-5 C P2-27 M U ! I f — I 0 8 8 8 8 8 8 8 8 8 8 8 V Section along 'VieW VS Plane" N A L Combo Preview Page 1 of 1 (CD4- 303ST1wp06 Toolbox.xls) 9/13/2007 3'55 PM • • Closest in POOL Closest Approach: Reference Well: CD4303ST1wp06 Plan Offset Well: CD2 -53 Coords - Coords. - 3-D ctr- ASP ASP ctr - , rii �i Meas. Subsea N( +) /S( -) View VS Meas. Subsea N( +) /S( -) View VS Distance. ' - Depth Inc! Angle TRUE Azi. TVD E( +)AV( -) (359.57°) Comments Depth Incl. Angle TRUE Azi TVD E( +)/VV( -) (359.57°) Comments POOL Min Distance POOL Mm Distance (2337 ft) in POOL (2337 ft) in POOL (6900 -6950 TVDss) (6900 - 6950 TVDss) to CD4- 303ST1wp06 to CD2 -53 (6900 - Plan (6900 - 6950 - 2337 I 12235 9023 359.3 6924.666 5964821 3781902 7303.979 6950 TVDss) 11892 61.43 149.36 6953.29 5966479 376543.8 - 7738.76 TVDss) Closest Approach: Reference Well: CD4303ST1wp06 Plan Offset Well: CD4 -320 Coords. - Coords. - 3-D ctr- ASP ASP ctr �� - Meas. Subsea N( +) /S( -) View VS Meas Subsea N( +) /S( -) View VS Distance. 'i'I 1,, Depth not Angle TRUE An. TVD E( +)/W( -) (359.57°) Comments Depth Incl. Angle TRUE Azi. TVD E( +)/W( -) (359 57 °) Comments POOL Min Distance POOL Min Distance (2400.32 ft) in POOL (2400.32 ft) in POOL (6900 - 6950 TVDss) (6900 - 6950 TVDss) to CD4- 303ST1wp06 to CD4 -320 (6900 - Plan (6900 - 6950 2400.32 .. -, _ _- - 7946 76.13 2.85 6901.44 5960535 378162.9 301822 6950 TVDss) 7732 7719 165.9 6899.17 5958177 378614.5 664.79 TVD5s) Closest Approach: Reference Well: CD4- 303ST1wp06 Plan Offset Well: CD2 -27 Coords. - Coords - 3-D ch. ASP ASP ctr Subsea N( +) /S( -) View VS Meas. Subsea N(+) /S( -) View VS Distance. . , . ■. - -- - Depth Incl. Angle TRUE Azi. TVD E( +yM/( -) (359.57°) Comments Depth Incl. Angle TRUE Azi TVD E(+yW( -) (359 57°) Comments POOL Min Distance POOL Mm Distance (2702 27 ft) in POOL (2702 27 ft) in POOL (6900 - 6950 TVDss) (6900 - 6950 TVDss) to C04- 303ST1wp06 to CD2 -27 (6900 - Plan (6900 - 6950 2702.27 " : � 12235 90.23 359.3 6924 666 5964821 378190.2 7303.879 6950 TVDss) 11958 61.93 147.43 6952 39 5967476 377666.4 - 6988 96 TVDss) Closest Approach: Reference Well: CD4- 303ST1wp06 Plan Offset Well: CD2 -57 • Coords. - Coords. - 3-D ctr- ASP ASP ctr _ _- - .- - -.. Mess Subsea N( +) /S( -) View VS Meas. Subsea N( +)/S( -) View VS Distance. -_: _ -_ -- - _ n. -- Depth Incl. Angle TRUE Azi. TVO E( +yW( -) (359.57°) Comments Depth Incl. Angle TRUE An. TVD E( +yW( -) (359.57°) Comments POOL Min Distance POOL Min Distance (2957.98 ft) in POOL (2957 98 ft) in POOL (6900 - 6950 TVDSS) (6900 - 6950 TVDss) to CD4- 303ST1wp06 to CD2 -57 (6900 - Plan (6900 - 6950 2957.98 - - -- - -_ -- 12235 90.23 359.3 6924.666 5964821 3781902 7303.879 6950 TVDss) 12010 59.2 156.72 6951.96 5965664 375355.4 - 8524.73 TVDS5) CD4-303ST1wp06 PoolSummary.ols 9/130007 5 06 PM OR a A iii A ConocoPhilli s Alaska Inc. -WNS Western North Slope CD4 Nanuq Pad Plan: CD4 -303 Plan: CD4 -303 , CD4- 303wp06 • v � s Sperry Drilling ► rvice ( Clearance Summa 00 El t g = Anticollision Report 111 ,, 15 October, 2009 1 Tray. Cylinder North Proximity Scan on Current Survey Data (North Reference) Reference Design: CD4 Nanuq Pad - Plan: CD4 -303 - Plan: CD4-303 - CD4-303wp06 Well Coordinates: 5,957,263.99 N, 1,518,169.26 E (70° 17' 31.68" N, 150° 59' 23.16" W) a Datum Height: CD4- 303wp05 L 55.90ft (Doyon 19 (36.3 +19.6)) ill €= = _ Scan Range: 0.00 to 8,283.84 ft. Measured Depth. fi� Scan Radius is 1,024.77 ft . Clearance Factor cutoff is Unlimited. Max Ellipse Separation is Unlimited Geodetic Scale Factor Applied !p P,� Version: 2003.16 Build: 69 Scan Type: GLOBAL FILTER APPLIED: All welipaths within 200'+ 100/1000 of reference Scan Type: 25.00 whi b r A U I HALI..1 RTON q l ': T Sperry Drilling Services QR IGIN1 L I • SURVEY PROGRAM ConocoPhillips(Alaska) Inc. -WNS ANTI - COLLISION SETTINGS Date: 2007-08-07T00:00:00 Validated: Yes Version: 8 Calculation Method: Minimum Curvature Interpolation Method: MD, interval: 25.00 Error System: ISCWSA Depth Range From: 36.30 To 8283.84 Depth From Depth To Survey/Plan Tool Scan Method: Tray. Cylinder North Centre Distance: 1024.78 36.30 1000.00 CD4-303wp06 (Plan: CD4-303) CB- GYRO -SS Error Surface: Elliptical Conic Reference: Plan: CD4- 303wp06 (Plan: CD4- 303lPlan: CD4 -303) 1000.00 8284.06 CD4-303wp06 (Plan: CD4-303) MWD +IFR AK- CAZ-SC Warning Method: Rules Based GLOBAL FILTER APPLIED: All wellpaths within 200'+ 100/1000 of reference 0 400 330 30 CD4- 320PB1 91_ 30. r 330 M) ''`- 30 ICD4- 303ST1wp06 From Colour To MD t 300 60 - "1. k# W �\ .1-# ° CD4 -320 i 36 250 , ' \. .,.«, a r 250 500 300 : �. 0 t t i � dl li sl� �' 500 750 750 1000 «i \;! I CD4 - 306 t _, c i , i G ;■ ;� 1 s )) )) , . . 1000 1250 cost-3061 �� C /'� t : t ,t u 1250 1500 2701 �� 1„:v1 '� 7 1 I - � '1 i -- 1 Tar r, r, _... ... -...- P� / �� ^ r II �f 1�*. y #:`° )1 ::��; 1500 2 0 00 m ? � Y r . n! %D4 -UI .y � , 1 .� % %Ei �`, - _` - l 4 - J 1 , 11 i�� + 2 000 2500 ,� 2 - I ; ' ,ter " � r.. s 1: y +; 1" #. 2500 3000 ° y ° C04-301B # 4 :. 1� CD4 -3021 �" 'ir 0 a < .t r 3000 3500 240 ia�, , 1 �i a1 11 CD4 - 211 240 1 1 1`x. WA d. u . . � . 4 � � = + 120 3500 4000 ‘1145! 50 C 4-302 20' r 4sr "' � ."1' I r„ :,•:��'`. 4000 4500 GD4-05 � lf p��0�_i�` � ,, ICD4320P81 wr° i �'%i± �'' 4500 5000 2 0 150 I CD4 -214 '.0„... tit►.,. 30l ♦ I R ��f � ,�:, .•=�� CD4 -301B 5000 _ 5500 �'-� 175 i ,' P - 1i4'1ri' 180 ICD4 -05 210 o 5 4 ; " �' 1 50 , 5500 6000 o4 I �'�� ►� 40� Im CD4-320 6000 6500 ° ll4 -210 ICD4 -209 ' • 180 CD4 -213 ICD4- 212wp04 i CD4- 208PB1 Travelling Cylinder Azimuth (TFO +AZI) [ ] vs Centre to Centre Separation [50 ft/in] INanuq 51 SECTION DETAILS Travelling Cylinder Azimuth (TFO +AZI) [ vs Centre to Centre Separation [200 ft/in] Sec MD Inc Aa ND +N / -S +E/ -W DLeg TFace VSec Target 1 36.30 0.00 0.00 36.30 0.00 0.00 0.00 0.00 0.00 2 400.00 0.00 0.00 400.00 0.00 0.00 0.00 0.00 0.00 3 1702.89 19.54 358.18 1677.77 219.95 -6.99 1.50 358.18 219.97 Details: Plan: CD4 -303 North American Datum 1983 Masks Zone 4 4 6323.56 19.54 358.18 6032.24 1764.88 -56.07 0.00 0.00 1765.04 5 7332.93 70.00 0.00 6725.90 2452.94 -61.81 5.00 2.22 2453.12 6 8113.58 70.00 0.00 6992.90 3186.52 -61.81 0.00 0.00 3186.89 CD4- 303wp06 T1 Ground Level: 0.00 7 8134.05 70.00 0.00 6999.90 3205.75 -61.81 0.00 0.00 3205.92 +N / -S +E/ -W Northing Easting Latittude Longitude Slot 8 8284.05 70.00 D.00 7051.20 3346.71 -61.81 0.00 0.00 3346.87 0.00 0.00 6967263.99 1518169.26 70° 17' 31.681 N 150° 59' 23.162 W OR ConocoPhillips(Alaska) Inc. -WNS HALLIRTDN Western North Slope Anticollision Report for Plan: CD4 -303 - CD4- 303wp06 Tray. Cylinder North Proximity Scan on Current Survey Data (North Reference) Reference Design: CD4 Nanuq Pad - Plan: CD4 -303 - Plan: CD4 -303 - CD4- 303wp06 Scan Range: 0.00 to 8,283.84 ft. Measured Depth. Scan Radius is 1,024.77 ft . Clearance Factor cutoff is Unlimited. Max Ellipse Separation is Unlimited Measured Minimum @Measured Ellipse @Measured Clearance Summary Based on Site Name Depth Distance Depth Separation Depth Factor Minimum Separation Warning Comparison Well Name - Wellbore Name - Design (ft) (ft) (ft) (ft) ft CD4 Nanuq Pad CD4 -05 - CD4 -05 - CD4 -05 324.80 37.70 324.80 30.84 325.00 5.497 Centre Distance Pass - Major Risk • CD4 -05 - CD4 -05 - CD4 -05 399.79 38.32 399.79 29.83 400.00 4.516 Clearance Factor Pass - Major Risk CD4 -07 - CD4 -07 - CD4 -07 124.87 79.86 124.87 77.29 125.00 31.176 Centre Distance Pass - Major Risk CD4 -07 - CD4 -07 - CD4 -07 349.85 81.58 349.85 74.13 350.00 10.957 Clearance Factor Pass - Major Risk CD4 -208 - CD4 -208 - CD4 -208 36.90 100.36 36.90 99.44 36.15 109.118 Centre Distance Pass - Major Risk CD4 -208 - CD4 -208 - CD4 -208 673.40 103.33 673.40 90.08 675.00 7.799 Clearance Factor Pass - Major Risk CD4 -208 - CD4- 208PB1 - CD4- 208PB1 36.90 100.36 36.90 99.44 36.15 109.118 Centre Distance Pass - Major Risk CD4 -208 - CD4- 208PB1 - CD4- 208PB1 673.40 103.33 673.40 90.08 675.00 7.799 Clearance Factor Pass - Major Risk CD4 -209 - CD4 -209 - CD4 -209 36.90 120.46 36.90 119.54 37.40 130.978 Centre Distance Pass - Major Risk CD4 -209 - CD4 -209 - CD4 -209 597.49 127.54 597.49 114.96 600.00 10.134 Clearance Factor Pass - Major Risk CD4 -210 - CD4 -210 - CD4 -210 249.09 140.20 249.09 134.97 250.00 26.839 Centre Distance Pass - Major Risk CD4 -210 - CD4 -210 - CD4 -210 646.89 142.03 646.89 128.16 650.00 10.236 Clearance Factor Pass - Major Risk CD4 -211 - CD4 -211 - CD4 -211 697.35 158.91 697.35 144.12 700.00 10.744 Centre Distance Pass - Major Risk CD4 -211 - CD4 -211 - CD4 -211 846.46 159.99 846.46 142.63 850.00 9.216 Clearance Factor Pass - Major Risk CD4 -213 - CD4 -213 - CD4 -213 324.18 198.58 324.18 191.70 325.00 28.845 Centre Distance Pass - Major Risk CD4 -213 - CD4 -213 - CD4 -213 423.82 199.36 423.82 190.30 425.00 22.021 Clearance Factor Pass - Major Risk CD4 -213 - CD4 -213A - CD4- 213Awp01 324.18 198.58 324.18 191.70 325.00 28.844 Centre Distance Pass - Major Risk • CD4 -213 - CD4 -213A - CD4- 213Awp01 423.82 199.36 423.82 190.30 425.00 22.021 Clearance Factor Pass - Major Risk CD4 -214 - CD4 -214 - CD4 -214 36.30 219.89 36.30 218.98 37.10 241.113 Centre Distance Pass - Major Risk CD4 -214 - CD4 -214 - CD4 -214 323.97 221.83 323.97 214.97 325.00 32.340 Clearance Factor Pass - Major Risk CD4 -301 - CD4 -301 - CD4 -301 36.90 40.08 36.90 39.16 36.90 43.573 Centre Distance Pass - Major Risk CD4 -301 - CD4 -301 - CD4 -301 274.98 42.81 274.98 37.04 275.00 7.414 Clearance Factor Pass - Major Risk CD4 -301 - CD4 -301A - CD4 -301A 36.90 40.08 36.90 39.16 36.90 43.573 Centre Distance Pass - Major Risk CD4 -301 - CD4 -301A - CD4 -301A 274.98 42.81 274.98 37.04 275.00 7.414 Clearance Factor Pass - Major Risk CD4 -301 - CD4-301B - CD4-301B 36.90 40.08 36.90 39.16 36.90 43.573 Centre Distance Pass - Major Risk CD4 -301 - CD4-301B - CD4-301B 274.98 42.81 274.98 37.04 275.00 7.414 Clearance Factor Pass - Major Risk CD4 -302 - CD4 -302 - CD4 -302 36.30 19.87 36.30 18.96 36.50 21.791 Centre Distance Pass - Major Risk CD4 -302 - CD4 -302 - CD4 -302 374.79 22.30 374.79 14.41 375.00 2.827 Clearance Factor Pass - Major Risk 15 October, 2009 - 13:57 Page 2 of 5 COMPASS I , t : (' k i d y f § ft twY ' it ` / i ConocoPhillips(Alaska) Inc. -WNS HALLIBURTON Western North Slope • Anticollision Report for Plan: CD4 -303 - CD4- 303wp06 Tray. Cylinder North Proximity Scan on Current Survey Data (North Reference) Reference Design: CD4 Nanuq Pad - Plan: CD4 -303 - Plan: CD4 -303 - CD4- 303wp06 Scan Range: 0.00 to 8,283.84 ft. Measured Depth. Scan Radius is 1,024.77 ft . Clearance Factor cutoff is Unlimited. Max Ellipse Separation is Unlimited Measured Minimum @Measured Ellipse @Measured Clearance Summary Based on Site Name -_ Depth Distance Depth Separation Depth Factor Minimum Separation Warning Comparison Well Name - Welibore Name - Design (ft) (ft) (ft) (ft) ft CD4 -304 - CD4 -304 - CD4 -304 36.40 19.96 36.40 19.04 36.20 21.851 Centre Distance Pass - Major Risk CD4 -304 - CD4 -304 - CD4 -304 350.17 22.71 350.17 15.30 350.00 3.067 Clearance Factor Pass - Major Risk • CD4 -304 - CD4- 304PB1 - CD4- 304PB1 36.40 19.96 36.40 19.04 36.20 21.851 Centre Distance Pass - Major Risk CD4 -304 - CD4- 304PB1 - CD4- 304PB1 350.17 22.71 350.17 15.30 350.00 3.067 Clearance Factor Pass - Major Risk CD4 -306 - CD4 -306 - CD4 -306 499.28 57.55 499.28 47.13 500.00 5.521 Centre Distance Pass - Major Risk CD4 -306 - CD4 -306 - CD4 -306 573.98 58.08 573.98 46.45 575.00 4.994 Clearance Factor Pass - Major Risk CD4 -320 - CD4 -320 - CD4 -320 4,385.57 114.71 4,385.57 46.35 4,425.00 1.678 Centre Distance Pass - Major Risk CD4 -320 - CD4 -320 - CD4 -320 4,410.25 115.09 4,410.25 46.28 4,450.00 1.673 Clearance Factor Pass - Major Risk CD4 -320 - CD4- 320PB1 - CD4- 320PB1 4,509.28 109.29 4,509.28 38.05 4,550.00 1.534 Centre Distance Pass - Major Risk CD4 -320 - CD4- 320PB1 - CD4- 320PB1 4,558.79 109.88 4,558.79 37.40 4,600.00 1.516 Clearance Factor Pass - Major Risk Nanuq 5 - Nanuq 5 - Nanuq 5 551.37 173.45 551.37 163.24 550.00 16.999 Centre Distance Pass - Major Risk Nanuq 5 - Nanuq 5 - Nanuq 5 600.00 173.81 600.00 162.68 600.00 15.608 Clearance Factor Pass - Major Risk Nanuq 5 - Plan: CD4 -212 - CD4- 212wp04 551.37 173.45 551.37 163.24 550.00 16.999 Centre Distance Pass - Major Risk Nanuq 5 - Plan: CD4 -212 - CD4- 212wp04 600.00 173.81 600.00 162.68 600.00 15.608 Clearance Factor Pass - Major Risk Plan: CD4 -303 - Plan: CD4- 303ST1 - CD4- 303ST1wp0 v r Survey tool program • From To Survey /Plan Survey Tool (ft) (ft) 36.30 1,000.00 CD4- 303wp06 CB- GYRO -SS 1,000.00 8,284.06 CD4- 303wp06 MWD +IFR- AK- CAZ -SC Ellipse error terms are correlated across survey tool tie -on points. Calculated ellipses incorporate surface errors. Separation is the actual distance between ellipsoids. Distance Between centres is the straight line distance between wellbore centres. Clearance Factor = Distance Between Profiles / (Distance Between Profiles - Ellipse Separation). All station coordinates were calculated using the Minimum Curvature method. 15 October, 2009 - 13:57 Page 3 of 5 COMPASS etlrffitkAPtil ConocoPhillips(Alaska) Inc. -WNS HALLIBURTON Western North Slope • Anticollision Report for Plan: CD4 -303 - CD4- 303wp06 Direction and Coordinates are relative to True North Reference. Vertical Depths are relative to CD4- 303wp05 @ 55.90ft (Doyon 19 (36.3 +19.6)). Northing and Easting are relative to Plan: CD4 -303. Coordinate System is US State Plane 1983, Alaska Zone 4. Central Meridian is - 150,00 °, Grid Convergence at Surface is: -0.93 °. Ladder LEGEND Plot • -0- CD4-05, CD4-05, CD4-05V0 -- CD4-07, CD4-07, CD4-07V1 ±- CD4 -208, CD4 -208, CD4 -208 V7 Z 900 FAA ,' ( _' • CD4 -208, CD4- 208PB1, CD4- 208PB1 V6 O A I i H e•- CD4 -209, CD4 -209, CD4 -209 V4 O c) ] CD4 -210, CD4 -210, CD4 -210 V3 o 4 , CD4 -211, CD4 -211, CD4 -211 V2 f�6 s1 I ► CD4 -213, CD4 -213, CD4 -213 V4 I co 600 1 7/ CI CD4 213, CD4213A, CD4213Awp01 VO N i 4t /illy ,' CD4 -214, CD4 -214, CD4 -214 V3 U) l i �' � , CD4 301, CD4 -301, CD4 -301 V0 T. i i , fi 1 - CD4 301, CD4 -301A, CD4-301AVO 4 id ,/ CD4 301, CD4-001B,CD4-001BVO 0 z Z " ifil d ` i CD4 302, CD4 -302, CD4 -002 V3 O 300 °" °M CD4 304, CD4 -004, CD4 -004 V6 N 1 r CD4-304, CD4-004PB1, CD4- 304PB1 V16 �' � � / a., ► i CD4 -306, CD4 -0 06, CD4 -306V1 • a) 131111.- a = .= CD4 -320, CD4-320, CD4 -020 V7 , 0i I. CD4 320, CD4- 320PB1, CD4-320PB1 V4 0 I I I I Nanuq 5, Nanuq 5, Nanuq 5 V1 0 1500 3000 4500 6000 7500 Nanuq 5, Plan: C04 -212, CD4- 212wp04V1 Plan: CD4-303, Plan: CD4- 303ST1, CD4- 3O3ST1wp06 s/7 Measured Depth (1500 ft/in) CD4- 303wp06 15 October, 009 - 13:57 Page 4 of 5 COMPASS 0 ! , A ffi ConocoPhillips(Alaska) Inc. -WNS HALLIBURTON Western North Slope • Anticollision Report for Plan: CD4 -303 - CD4- 303wp06 Clearance Factor Plot: Measured Depth versus Separation(Clearance) Factor T a 1 10.00 LEGEND Cli , ! - , i i y � ' -e- CD4-05, CD4-05, CD405 V0 875- -1 I , $ CD407, CD4-07, CD4-07 V1 • - - - , ',. l e R _ 1- � -e- cD4 -208, cD4 -206, cD4 -208 V7 7.50- 1 $ CD4 -208 CD4- 208PB1 CD4�206P . a !! � = , _ I CD4 -210, CD4-2 0, CD4-2 0 V3 l � " L _ 1 1 -E CD4 -211, CD4.211, CD4-211 V2 625 ■ 11 N 1 CD4-213, CD4 -213, CD4-213 V4 15 0 , I -X- CD4 -213, CD4213A, CD4 213Awp01 VO co u_ _ t. I ( ; - { - CD4-214, CD4 -214, CD4-214 V3 0 5.00 lI f- CD4301, CD4301, CD4-301 VO 'il 1 { r m :> - 1 1 CD4301,CD4301A,CD4- 301AVO CD4301, CD4301 B, CD4301 B VO 3.75 i 'y $ CD4-302, CD4302, CD4302 V3 I 11 g CD4304, CD4304, CD4304 V6 05 I 2.50 � • j $ CD4304, CD4304PB1, CD4304PB1 V16 _ 0 I l m I r ( CD4306, CD4 306, CD4306 V1 + I - - ] ► I _ 1 I CD4320, CD4 320, CD4320 V7 �.++► e v 1.25 -$- CD4320, CD4320PB1, CD4-320PB1 V4 • -$ Nanuq 5, Nanuq 5, Nanuq 5 V1 �T 1, Nanuq 5, Plan: CD4 -212, CD4- 212wp04 V1 0.00 - I Plan: CD4303, Plan: CD4303ST1, CD4- 303ST1wp06 V7 I I I I I I I I I I I I 0 750 1500 2250 3000 3750 4500 5250 6000 6750 7500 8250 9000 $ CD4 Measured Depth (1500 ft/in) 15 October, 2009 - 13:57 Page 5 of 5 COMPASS (7) f ! (71 1 !'',.f if‘ 1 I01 0 i r - 4 ConocoPhillips(Alaska) Inc. -WNS = h i h Western North Slope F. - 0 CD4 Nanuq Pad Plan: CD4 -303 00 a 'l' ,� Plan: CD4- 303ST1 01 N CD4- 303ST1 wp06 • =I 0111 0 pp Sperry Drilling Services LI 'i Clearance Summary Anticollision Report hi 0 15 October, 2009 Tray. Cylinder North Proximity Scan on Current Survey Data (North Reference) s Reference Design: CD4 Nanuq Pad - Plan: CD4 -303 - Plan: CD4- 303ST1 - CD4- 303ST1wp06 I ; Well Coordinates: 5,957,263.99 N, 1,518,169.26 E (70° 17' 31.68" N, 150° 59' 23.16" W) • Datum Height: CD4- 303wp05 c 55.90ft (Doyon 19 (36.3 +19.6)) 7 Scan Range: 7,300.00 to 12,235.88 ft. Measured Depth. Scan Radius is 1,419.96 ft . Clearance Factor cutoff Is Unlimited. Max Ellipse Separation Is Unlimited Geodetic Scale Factor Applied 1 . k r+- Version: 2003.16 Build: 69 Scan Type: GLOBAL FILTER APPLIED: All wellpaths within 200'+ 100/1000 of reference _ Scan Type: 25.00 � HALLIBURTON LLIBURT® I ^I91: Sperry Drilling Services Op! r , ... - i y A t SURVEY PROGRAM ConocoPhillips(Alaska) Inc. -WNS ANTI- COLLISION SETTINGS Date: 2007- 08- 08T00:00:00 Validated: Yes Version: 7 Calculation Method: Minimum Curvature Interpolation Method: MD, Interval: 25.00 Error System: ISCWSA Depth Range From: 7300.00 To 12235.88 Depth From Depth To Survey/Plan Tool Scan Method: Tray. Cylinder North Centre Distance: 1419.96 36.30 1000.00 CD4-303wp06 (Plan: CD4 -303) CB- GYRO -SS Error Surface: Elliptical Conic Reference: Plan: CD4-303ST1wp06 (Plan: CD4- 303IPIan: CD4 -303ST ) 1000.00 7300.00 CD4-303wp06 (Plan: CD4-303) MWD +IFR AK- CAZ-SC Warning Method: Rules Based 7300.00 12235.98 CD4303ST1wp06 (Plan: CD4303ST1)VIWD +IFR -AK- CAZ-SC GLOBAL FILTER APPLIED: All wellpaths within 200'+ 100/1000 of reference 0 40. 330 30 0 330 30 / pi 60 50 oil 20. 300 I N 60 • 2' \ t From Colour To MD ' r , 270 • 90 7300 8000 270 90 �� CD4303wp0 6 8000 8500 i�a n� .. 8500 _ 9000 ' ' ----' ,- ------ : -71-; - - >///7, • •-. - Q 4-' 9000 9500 ` \ I / �� '�� �i 9500 10000 240 e I 120 it i ((( /I 0000 5 __ zoo �� �I 10500 11000 _�_� ----.-----••••-- _ _ _ 11000 11500 21 : ` 150 F VI _` \ .� - CD2 -53 180 11500 12000 CD4-303wp06 / �� -._ \. ,4 d e r '` N , u ;4 ice ' �` `` e 12000 12500 210 w, ryii = 150 12500 13000 Travelling Cylinder Azimuth (TFO +AZI) [°] vs Centre to Centre Separation [50 ft/in] 0Ur 180 III SECTION DETAILS Travelling Cylinder Azimuth (TFO +AZI) [ °] vs Centre to Centre Separation 1200 ft/in] Sec MD Inc An NO +N / -S +E/ -W DLeg TFace VSec Target 1 7300.00 68.35 359.98 6714.19 2422.19 -61.49 0.00 0.00 2422.59 2 7400.00 64.90 2.18 6753.86 2513.95 -59.79 4.00 150.00 2514.33 3 7500.00 64.97 6.60 6796.24 2604.24 -52.85 4.00 90.00 2604.57 Details: Plan: CD4909 North American Datum 1983 Alaska Zone 4 4 7533.25 66.11 5.53 6810.01 2634.33 .49.66 4.50 40.69 2634.64 5 7716.94 66.11 5.53 6864.40 2801.51 -33.47 0.00 0.00 2801.88 6 8269.21 90.23 359.38 6996.90 3337.34 -11.80 4.50 -14.78 3337.34 CD4- 303ST1wp06 Heel Ground Level: 0.00 7 12235.88 90.23 359.36 6960.90 7303.74 -55.40 0.00 -89.98 7303.95 CD4- 303ST1wp06 Toe +NI -S +E/-W Northing Easting Latittude Longitude Slot 0.00 0.00 6957263.99 1518169.26 70 °17'31.681 N 150 °59'23.162 W ConocoPhillips(Alaska) Inc. -WNS HALLIBURTON Western North Slope Anticollision Report for Plan: CD4 -303 - CD4- 303ST1w 06 p p Tray. Cylinder North Proximity Scan on Current Survey Data (North Reference) Reference Design: CD4 Nanuq Pad - Plan: CD4 -303 - Plan: CD4- 303ST1 - CD4- 303ST1wp06 Scan Range: 7,300.00 to 12,235.88 ft. Measured Depth. Scan Radius is 1,419.96 ft . Clearance Factor cutoff is Unlimited. Max Ellipse Separation is Unlimited Measured Minimum @Measured Ellipse @Measured Clearance Summary Based on Site Name Depth Distance Depth Separation Depth Factor Minimum Separation Warning Comparison Well Name - Welibore Name - Design (ft) (ft) (ft) (ft) ft CD2 Alpine Pad • CD2 -27 - CD2 -27 - CD2 -27 12,217.98 1,038.95 12,217.98 776.08 15,075.00 3.952 Clearance Factor Pass - Major Risk CD2 -53 - CD2 -53 - CD2 -53 11,095.60 233.16 11,095:60 62.52 15,125.00 1.366 Clearance Factor Pass - Major Risk, CD2 -53 - CD2 -53 - CD2 -53 10,919.91 210.44 10,919.91 88.25 15,325.00 1.722 Centre Distance Pass - Major Risk CD2 -57 - CD2 -57 - CD2 -57 9,165.32 905.94 9,165.32 658.10 16,433.00 3.655 Clearance Factor Pass - Major Risk CD4 Nanuq Pad Nanuq 5 - Plan: CD4 -212 - CD4- 212wp04 9,707.31 744.65 9,707.31 635.92 13,650.00 6.849 Clearance Factor Pass - Major Risk Nanuq 5 - Plan: CD4 -212 - CD4- 212wp04 9,797.87 743.39 9,797.87 636.74 13,750.00 6.970 Centre Distance Pass - Major Risk Plan: CD4 -303 - Plan: CD4 -303 - CD4- 303wp06 -s` Survey tool program From To Survey /Plan Survey Tool (ft) (ft) 36.30 1,000.00 CB- GYRO -SS 1,000.00 7,300.00 MWD +IFR- AK- CAZ -SC 7,300.00 12,235.98 CD4- 303ST1wp06 MWD +IFR- AK- CAZ -SC Ellipse error terms are correlated across survey tool tie -on points. Calculated ellipses incorporate surface errors. Separation is the actual distance between ellipsoids. • Distance Between centres is the straight line distance between wellbore centres. Clearance Factor = Distance Between Profiles / (Distance Between Profiles - Ellipse Separation). All station coordinates were calculated using the Minimum Curvature method. 15 October, 2009 - 14:00 Page 2 of 4 COMPASS a. ConocoPhillips(Alaska) Inc. -WNS HALLIBURTON Western North Slope ' Anticollision Report for Plan: CD4 -303 - CD4- 303ST1wp06 Direction and Coordinates are relative to True North Reference. Vertical Depths are relative to CD4- 303wp05 @ 55.90ft (Doyon 19 (36.3 +19.6)). Northing and Easting are relative to Plan: CD4 -303. Coordinate System is US State Plane 1983, Alaska Zone 4. Central Meridian is - 150,00 °, Grid Convergence at Surface is: -0.93 °. LEGEND Ladder - CD2 -27, CD2 -27, CD2 -27 V8 Plot --x:- CD2 -53, CD2 -53, CD2 -53V11 • $ CD2 -57, CD2 -57, CD2-57 V2 - CD4 -05, CD4-05, CD4-05 V0 C 1200- .\ Hoe- CD4 -07, CD4 -07, CD4 -07 V1 O ,‘■ -$ CD4 -208, CD4 -208, CD4 -208 V7 0 CD4 -208, CD4- 208PB1, CD4- 208PB1 V6 ■ - - CD4 -209, CD4 -209, CD4 -209 V4 0 k .. CD4 -210, CD4 -210, CD4 -210 V3 L A\ CD4 -211, CD4 -211, CD4 -211 V2 ai 800- k _ , CD4 -213, CD4 -213, CD4 -213 V4 N - CD4 -213, CD4 -213A, CD4- 213Awp01 VO N 4- CD4 -214, CD4 -214, CD4 -214 V3 C = CD4 -301, CD4 -001, CD4 -301 VO U -- CD4 -301, CD4 -301A, CD4- 301AV0 o 400- - CD4-301, CD4 -3018, CD4 -301B VO CD4 -302, CD4 -302, CD4-002 V3 C CD4 -304, CD4-304, CD4-304V6 lb U -= CD4 -304, CD4- 304PB1, CD4-304PB1 V16 • CD4-306, CD4 -306, CD4 306 V1 CD4 -320, CD4-320, CD4-320V7 0 I I I 1 I $ CD4 -320, CD4- 320PB1, CD4- 320PB1 V4 0 2500 5000 7500 10000 12500 -3€ Nanuq 5, Nanuq 5, Nanuq 5 V1 Measured Depth (2500 ft/in) $ Nanuq 5, Plan: CD4 -212, CD4- 212wp04V1 - 3-- Plan: CD4 -303, Plan: CD4 -303, CD4- 303wp06V8 15 October, 2009 - 14:00 Page 3 of 4 COMPASS 0 Nrsitd AI ConocoPhillips(Alaska) Inc. -WNS HALLI URTON Western North Slope ' Anticollision Report for Plan: CD4 -303 - CD4- 303ST1wp06 Clearance Factor Plot: Measured Depth versus Separation(Clearance) Factor I , t ! j i I LEGEND 1. r� -- 1 -__ -___- - - - -- 10.00- { $ CD2 -27, CD2 -27, CD2 -27 V8 : 4f--- CD2-53, CD2 -53, CD2-53 V11 ' T T_', • 8.75- j ( $ CD2 -07, CD2 -07, CD2-57 V2 . C D4-05, CD4-05, CD4-05 VO I -,. _ww- CD4-07, CD4-07, CD4-07 V1 - --11 I I 1 -B- CD4 -208, CD4 -208, CD4 -208 V7 7.50 I --f- CD4 208, CD4208PB1, CD4-208PB1 V6 O N _ -' j ; -- ! . l -PA - 'n $ CD4 -209, CD4-209, CD4-209 V4 6.25- I �l I CD4 210, CD4 210, CD4 210 V3 `o I I j -4- CD4-211, CD4-211, CD4 -211 V2 _ I , $ CD4 213, CD4 213, CD4 213 V4 c 5.00 j 1 { a j O CD4 213, CD4 213A, CD4 213Awp01 VO t • CD4 214, CD4 214, CD4-214 V3 • a�i 3.75 - I - 1 j { I / � 1 CD4301, CD4301, CD4-301 VO co ! 1 - CD4-301, CD4 -301A, CD4- 301AVO 1 1 CD4 301, CD4 301 B, CD4 i01 B VO j I I \ $ CD4302, CD4 -302, CD4-302 V3 2.50 - - _ - CD4304, CD4304, CD4 -304 V6 -1:111111 CD4 -304, CD4- 304PB1, CD4304PB1 V16 - - $ C D4 306, CD4306, CD4306 V1 1.25 ( j j ( j CD4320, CD4 320, CD4-320 V7 - ; - - - f - -i -9- CD4 -320, CD4- 320PB1, CD4320PB1 V4 -X-- Nanuq 5, Nanuq 5, Nanuq 5 V1 0.00 I I I I I 1 1 1 1 i I, I I I I uq 2wp04 $ Nan 5, Plan: CD4 -212, CD4-21 V1 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 -4- Plan: CD4-303, Plan: CD4-303, CD4- 303wp06 V8 Measured Depth (2000 ft/in) -g- CD4- 303ST1wpO6 I 15 October, 2009 - 14:00 Page 4 of 4 COMPASS OPI:r"Itkriki ,"-,,,,,-.)!...:-..;,,--„,t,„,, ..n • • TRANSMITTAL LETTER CHECKLIST E CKLIST WELL NAME d ?Le C') s c PTD# 2 C,- / [so Development Service Exploratory Stratigraphic Test Non - Conventional Well FIELD: POOL: Circle Appropriate Letter / Paragraphs to be Included in Transmittal Letter CHECK ADD -ONS WHAT (OPTIONS) TEXT FOR APPROVAL LETTER APPLIES MULTI LATERAL The permit is for a new wellbore segment of existing well (If last two digits in Permit No. , API No. 50- - - API number are between 60 -69) Production should continue to be reported as a function of the original API number stated above. PILOT HOLE In accordance with 20 AAC 25.005(f), all records, data and logs acquired for the pilot ho e m t be clearly differentiated in both well name ( ef/ d zi PH) and API number ( - / &3 -1? (r,(j - 7L) from records, data and logs acquired for well /,( c7) v -$ • SPACING The permit is approved subject to full compliance with 20 AAC EXCEPTION 25.055. Approval to perforate and produce / inject is contingent upon issuance of a conservation order approving a spacing exception. assumes the liability of any protest to the spacing exception that may occur. DRY DITCH All dry ditch sample sets submitted to the Commission must be in SAMPLE no greater than 30' sample intervals from below the permafrost or from where samples are first caught and 10' sample intervals through target zones. Non - Conventional Please note the following special condition of this permit: Well production or production testing of coal bed methane is not allowed for (name of well) until after (Company Name) has designed and implemented a water well testing program to provide baseline data on water quality and quantity. (Company Name) must contact the Commission to obtain advance approval of such water well testing program. Rev: 1/11/2008 ''':t k '''..""' ' t - Field & Pool COLVILLE RIVER, ALPINE OIL - 120100 Well Name: COLVILLE RIV NAN-K CD4-303 Program DEV Well bore seg ril PTD #: 2091260 Company CONOCOPHILLIPS ALASKA INC Initial Class/Type DEV / PEND GeoArea 890 Unit 50360 On /Off Shore On Annular Disposal ❑ Administration 1 Permit fee attached NA 12 Lease number appropriate Yes Surface location in ADL 380077; Top prod interval and TD in ADL 380075 3 Unique well name and number Yes 4 Well located in a defined pool Yes COLVILLE RIVER, ALPINE OIL - 120100, governed by CO 443B. 5 Well located proper distance from drilling unit boundary Yes Conforms to spacing requirements of Rule 3, CO 443B: > 500' from exterior boundary. 16 Well located proper distance from other wells Yes CO No. 443B contains no spacing restrictions with respect to drilling unit boundaries. 7 Sufficient acreage available in drilling unit Yes CO No. 443B has no interwell spacing restrictions. 18 If deviated, is wellbore plat included Yes CO No. 443B has no interwell spacing restrictions. Wellbore will be more than 500' 9 Operator only affected party Yes from an external property line where ownership or landownership changes. 10 Operator has appropriate bond in force Yes 11 Permit can be issued without conservation order Yes Appr Date 1 12 Permit can be issued without administrative approval Yes 13 Can permit be approved before 15 -day wait Yes SFD 10/21/2009 14 Well located within area and strata authorized by Injection Order # (put 10# in comments) (For Yes SP 115 All wells within 1/4 mile area of review identified (For service well only) NA 16 Pre - produced injector: duration of pre production Less than 3 months (For service well only) NA 1 17 Nonconven. gas conforms to AS31.05.030(j.1.A),(j.2.A-D) NA 1 18 Conductor string provided Yes Engineering 19 Surface casing protects all known USDWs NA No Aquifers, AIO 18A , conclusion 3 20 CMT vol adequate to circulate on conductor & surf csg Yes 21 CMT vol adequate to tie -in long string to surf csg No 22 CMT will cover all known productive horizons Yes Qannik to be cemented in 2nd stage. Slotted liner over Kuparuk interval. 23 Casing designs adequate for C, T, B & permafrost Yes 24 Adequate tankage or reserve pit Yes Rig equipped with steel pits. All waste to approved disposal wells. 25 If a re- drill, has a 1.0 -403 for abandonment been approved NA 126 Adequate wellbore separation proposed Yes Nearest wellbore is CD4 -320 PB1 - 109' well-well at 4509' and 27 If diverter required, does it meet regulations NA Diverter waiver requested. No shallow gas issues in CRU. 20 AAC 25.035(h)(2) Appr Date 28 Drilling fluid program schematic & equip list adequate Yes Max formation pressure- 3166 psi (8.7 ppg EMW) Will drill with 9.8ppg mud GLS 10/28/2009 29 BOPEs, do they meet regulation Yes 30 BOPE press rating appropriate; test to (put psig in comments) Yes MASP = 2470 psi Will test BOP to 3500 psi • 31 Choke manifold complies w /API RP -53 (May 84) Yes 32 Work will occur without operation shutdown Yes 1 33 Is presence of H2S gas probable No H2S is not reproted at CRU. Rig has alarms and sensors. 34 Mechanical condition of wells within AOR verified (For service well only) NA 35 Permit can be issued w/o hydrogen sulfide measures Yes None expected based on numerous wells drilled from CD4-Pad Geology 36 Data presented on potential overpressure zones Yes Expected reservoir pressure is 8.7 ppg EMW; will be drilled with 8.8 ppg mud. App 37 Seismic analysis of shallow gas zones NA None expected based on numerous wells drilled from CD4-Pad Appr Date SFD 10/21/2009 ' 38 Seabed condition survey (if off - shore) NA 39 Contact name /phone for weekly progress reports [exploratory only] NA_ Geologic Engineering blic Commissioner: Date: Commissioner: Date Co-.' _ Date 1 -
