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Home My WebLink About209-1447. Property Designation (Lease Number): 1. Operations Performed: 2. Operator Name: 3. Address: 4. Well Class Before Work:5. Permit to Drill Number: 6. API Number: 8. Well Name and Number: 9. Logs (List logs and submit electronic data per 20AAC25.071): 10. Field/Pool(s): Susp Well Insp Install Whipstock Mod Artificial Lift Perforate New Pool Perforate Plug Perforations Coiled Tubing Ops Other Stimulate Fracture Stimulate Alter Casing Pull Tubing Repair Well Other: Change Approved Program Operations shutdown 11. Present Well Condition Summary: Casing Length Size MD TVD Burst Collapse Exploratory Stratigraphic Development Service 14. Attachments (required per 20 AAC 25.070, 25.071, & 25.283) 16. Well Status after work: 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. OIL GAS WINJ WAG GINJ WDSPL GSTOR Suspended SPLUG Authorized Name and Digital Signature with Date: Authorized Title: Contact Name: Contact Email: Contact Phone: PBU G-23B Hilcorp North Slope, LLC 3800 Centerpoint Dr, Suite 1400, Anchorage, AK 99503 209-144 50-029-21680-02-00 11420 Conductor Surface Intermediate Liner Liner 9032 80 2657 8035 644 3062 9620 20" 13-3/8" 9-5/8" 7" 4-1/2" 9030 31 - 111 29 - 2686 28 - 8063 7875 - 8519 8356 - 11418 31 - 111 29 - 2686 28 - 8033 7857 - 8434 8294 - 9032 Unknown, 11324, 11332, 11335, 11344 2670 4760 5410 7500 9620 4930 6870 7240 8430 8531 - 11325 4-1/2" 12.6# L-80 26 - 8370 8445 - 9030 Structural 4-1/2" HES TNT Packer 8240, 8192 8240 8192 Torin Roschinger Operations Manager Aras Worthington aras.worthington@hilcorp.com 907-564-4763 PRUDHOE BAY, PRUDHOE OIL Total Depth Effective Depth measured true vertical feet feet feet feet measured true vertical measured measured feet feet feet feet measured true vertical Plugs Junk Packer Measured depth True Vertical depth feet feet Perforation depth Tubing (size, grade, measured and true vertical depth) Packers and SSSV (type, measured and true vertical depth) 12. Stimulation or cement squeeze summary: Intervals treated (measured): Treatment descriptions including volumes used and final pressure: 13a.Representative Daily Average Production or Injection Data Oil -Bbl Gas-Mcf Water -Bbl Casing Pressure Tubing Pressure Prior to well operation: Subsequent to operation: 15. Well Class after work: Exploratory Development Service StratigraphicDaily Report of Well Operations Copies of Logs and Surveys Run Electronic Fracture Stimulation Data Sundry Number or N/A if C.O. Exempt: ADL 0028280 26 - 8306 N/A N/A 197 1448 11140 32611 48 92 300 350 655 895 N/A 13b. Pools active after work:PRUDHOE OIL No SSSV Installed STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS Sr Pet Eng: Sr Pet Geo: Form 10-404 Revised 10/2022 Submit in PDF format to aogcc.permitting@alaska.gov Sr Res Eng: Due Within 30 days of Operations By Grace Christianson at 9:34 am, Apr 29, 2024 Digitally signed by Torin Roschinger (4662) DN: cn=Torin Roschinger (4662), ou=Users Date: 2024.04.26 14:11:28 -08'00' Torin Roschinger (4662) WCB 7-15-2024 DSR-4/29/24 RBDMS JSB 043024 ACTIVITY DATE SUMMARY 4/19/2024 ***WELL S/I ON ARRIVAL*** T-BIRD LOADED TBG 147 bbls DRIFTED w/ KJ, 7' x 2-1/8" R. STEM(2.60" whl's), 3.70" CENT TO 9534' SLM @ 100' FPM (see log) DRIFTED w/ KJ, 7' x 2-1/8" R. STEM(2.60" whl's), 3.70" CENT, DEVIATED OUT ~9768' SLM (90-91 degrees) w/ PUMP ASSIST, 5 BPM @ 100' FPM (see log) ( 257 bbls total pumped) ***JOB COMPLETE, WELL LEFT S/I*** 4/19/2024 T/I/O=2500/320/100 Assist slckline with pump down drift (Profile modification) Loaded the tubing with 147 bbls of crude. Slickline drifted short of targert depth at 9635'. Pumped an additional 100 bbls of crude starting off at1 bpm and increasing rate incrementally to 5 bpm. At 5 bpm slickline was able to deviate out at 9768' ~ 133' past target depth. Released from jobsite. Final WHPs 600/320/100. Well left in control of slickline upon departure 4/21/2024 ***WELL SHUT IN ON ARRIVAL*** RIG UP PCE PT 250L 3000H PUMP DOWN SET NS CIBP @ 9620' (CCL STOP DEPTH = 9608.9) (CCL-ME=11.1') CORRELATE FROM SCHLUMBERGER SETTING AND PERFORATION RECORD 22-DEC-2018 ***WELL SHUT IN ON DEPARTURE*** 4/21/2024 T/I/O=60/350/154 Temp=SI Assist E-Line with pump down (Profile modification) Pumped 129 BBLS of crude down tubing at 5 bpm to help E-Line reach desired depth. Final WHPS=0/339/154 E-Line in control of well upon departure. Daily Report of Well Operations PBU G-23B SET NS CIBP @ 9620' CIBP correctly shown on new WBS, below. -WCB 7. Property Designation (Lease Number): 1. Operations Performed: 2. Operator Name: 3. Address: 4. Well Class Before Work:5. Permit to Drill Number: 6. API Number: 8. Well Name and Number: 9. Logs (List logs and submit electronic data per 20AAC25.071): 10. Field/Pool(s): Susp Well Insp Install Whipstock Mod Artificial Lift Perforate New Pool Perforate Plug Perforations Coiled Tubing Ops Other Stimulate Fracture Stimulate Alter Casing Pull Tubing Repair Well Other: Change Approved Program Operations shutdown 11. Present Well Condition Summary: Casing Length Size MD TVD Burst Collapse Exploratory Stratigraphic Development Service 14. Attachments (required per 20 AAC 25.070, 25.071, & 25.283) 16. Well Status after work: 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. OIL GAS WINJ WAG GINJ WDSPL GSTOR Suspended SPLUG Authorized Name and Digital Signature with Date: Authorized Title: Contact Name: Contact Email: Contact Phone: PBU G-23B Hilcorp North Slope, LLC 3800 Centerpoint Dr, Suite 1400, Anchorage, AK 99503 209-144 50-029-21680-02-00 11420 Conductor Surface Intermediate Liner Liner 9032 80 2657 8035 644 3062 9635 20" 13-3/8" 9-5/8" 7" 4-1/2" 9030 31 - 111 29 - 2686 28 - 8063 7875 - 8519 8356 - 11418 31 - 111 29 - 2686 28 - 8033 7857 - 8434 8294 - 9032 11324, 11332, 11335, 11344 2670 4760 5410 7500 9635 4930 6870 7240 8430 8531 - 11325 4-1/2" 12.6# L-80 26 - 8370 8445 - 9030 Structural 4-1/2" HES TNT Packer 8240, 8192 8240 8192 Torin Roschinger Operations Manager Kirsty Glasheen kirsty.glasheen@hilcorp.com 907-564-5258 PRUDHOE BAY, PRUDHOE OIL Total Depth Effective Depth measured true vertical feet feet feet feet measured true vertical measured measured feet feet feet feet measured true vertical Plugs Junk Packer Measured depth True Vertical depth feet feet Perforation depth Tubing (size, grade, measured and true vertical depth) Packers and SSSV (type, measured and true vertical depth) 12. Stimulation or cement squeeze summary: Intervals treated (measured): Treatment descriptions including volumes used and final pressure: 13a.Representative Daily Average Production or Injection Data Oil -Bbl Gas-Mcf Water -Bbl Casing Pressure Tubing Pressure Prior to well operation: Subsequent to operation: 15. Well Class after work: Exploratory Development Service StratigraphicDaily Report of Well Operations Copies of Logs and Surveys Run Electronic Fracture Stimulation Data Sundry Number or N/A if C.O. Exempt: ADL 0028280 26 - 8306 N/A N/A 399 197 42673 11140 48 48 300 300 900 655 N/A 13b. Pools active after work:PRUDHOE OIL No SSSV Installed STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS Sr Pet Eng: Sr Pet Geo: Form 10-404 Revised 10/2022 Submit in PDF format to aogcc.permitting@alaska.gov Sr Res Eng: Due Within 30 days of Operations By Grace Christianson at 3:41 pm, Apr 08, 2024 Digitally signed by Torin Roschinger (4662) DN: cn=Torin Roschinger (4662), ou=Users Date: 2024.04.08 15:32:55 -08'00' Torin Roschinger (4662) WCB 2024-07-09 RBDMS JSB 041024 DSR-4/12/24 ACTIVITY DATE SUMMARY 3/14/2024 T/I/O = 800/1280/730. Temp = 90°. Bleed IAP & OAP (eval TxIA). No AL. IA FL @ 5476' (sta #2 SO, 293 bbls). OA FL @ 306' (18 bbls). Bled IAP to OT from 1280 psi to 290 psi in 2.5 hrs. Bled OAP to BT from 730 psi to 100 psi in 3.5 hrs. Monitored for 30 min, IAP & FL unchanged, OAP increased 30 psi and FL unchanged. Final WHPs = 800/300/130. SV = C. WV, SSV, MV = O. IA, OA = OTG. 14:30 3/21/2024 *** WELL FLOWING ON ARRIVAL *** RAN 2.60 CENT TO 9530' SLM UNABLE TO MAKE IT TO TARGET DEPTH OF 9635' ***WELL SHUT IN ON DEPARTURE *** 3/21/2024 T/I/O= 2301/290/136 LRS 72 Assist Slickline ((PROFILE MODIFICATION) Pumed 142 bbls of crude into the TBG to push drift through the dogleg. SL in control of well and pad op notified upon LRS departure. 3/22/2024 T/I/O= 2289/292/140. Assist Slickline (PROFILE MODIFICATION). Pumped 171 bbls of crude to push drift through high deviation, Finial T/I/O= 0/289/142. 3/22/2024 ***WELL SHUT IN ON ARRIVAL*** DRIFTED W/370" SWAGE TO 9,660' SLM W/LRS PUMP ASSISTANCE.W/NO ISSUES. LRS PUMPED 171 BBLS OF CRUDE FOR PUMP DOWN SUPPORT. ***WELL LEFT SHUT IN ON DEPARTURE*** 4/3/2024 *** WELL IS FLOWING ON ARRIVIAL*** (SET 3.5'' OD NS CIBP) WELL SHUT IN BY PAD OPS REQUEST ON STAND BY WAITING FOR SNOW REMOVAL TO CLEAR OUT IN FRONT OF WELL HOUSE RIG UP YJ ELINE. PT PCE 300 PSI LOW /3000 PSI HIGH RIH W/CH/X2 1.69'' WB/2.75'' GR-CCL/ BAKER #10 SETTING TOOL/NS 3.5'' OD CIBP TO SET PLUG AT 9635' MD CCL TO MID ELEMENT 15.4' CCL STOP DEPTH 9619.6' GR CCL CORRELATE TO SLB PERFORATING RECORD DATED 12/22/2018 ***WELL S/I ON DEPARTURE*** 4/3/2024 T/IA/OA= 2200/250/150 Temp = S/I (Assist E-Line with pump down) Standby for fluid (0710-0830) Pumped 9 bbls 60/40 and 13 bbls Crude down FL for FP (Westside Recipe) Pressured FL to 1500 per DSO. Pumped 196 bbls Crude down TBG to assist E-Line with pump down. Yellow Jacket E-Line in control of well upon TFS departure FWHPS = 0/250/175 Daily Report of Well Operations PBU G-23B CIBP correctly shown on the new WBS, below. -WCB CIBP TO SET PLUG AT 9635' MD 7. Property Designation (Lease Number): 1. Operations Performed: 2. Operator Name: 3. Address: 4. Well Class Before Work:5. Permit to Drill Number: 6. API Number: 8. Well Name and Number: 9. Logs (List logs and submit electronic data per 20AAC25.071): 10. Field/Pool(s): Susp Well Insp Install Whipstock Mod Artificial Lift Perforate New Pool Perforate Plug Perforations Coiled Tubing Ops Other Stimulate Fracture Stimulate Alter Casing Pull Tubing Repair Well Other: Change Approved Program Operations shutdown 11. Present Well Condition Summary: Casing Length Size MD TVD Burst Collapse Exploratory Stratigraphic Development Service 14. Attachments (required per 20 AAC 25.070, 25.071, & 25.283) 16. Well Status after work: 17. I hereby certify that the foregoing is true and correct to the best of my knowledge. OIL GAS WINJ WAG GINJ WDSPL GSTOR Suspended SPLUG Authorized Name and Digital Signature with Date: Authorized Title: Contact Name: Contact Email: Contact Phone: PBU G-23B Mill CIBP Hilcorp North Slope, LLC 3800 Centerpoint Dr, Suite 1400, Anchorage, AK 99503 209-144 50-029-21680-02-00 11420 Conductor Surface Intermediate Liner Liner 9032 80 2657 8035 644 3062 11329 20" 13-3/8" 9-5/8" 7" 4-1/2" 9030 31 - 111 29 - 2695 28 - 8063 7875 - 8519 8356 - 11418 31 - 111 29 - 2695 28 - 8033 7857 - 8434 8294 - 9032 11324, 11332, 11335, 11344 2670 4760 5410 7500 None 4930 6870 7240 8430 8531 - 11325 4-1/2" 12.6# L-80 26 - 8370 8445 - 9030 Structural 4-1/2" HES TNT Packer 8240, 8192 8240 8192 Stan Golis Sr. Area Operations Manager Wyatt Rivard wrivard@hilcorp.com 907.777.8547 PRUDHOE BAY, PRUDHOE OIL Total Depth Effective Depth measured true vertical feet feet feet feet measured true vertical measured measured feet feet feet feet measured true vertical Plugs Junk Packer Measured depth True Vertical depth feet feet Perforation depth Tubing (size, grade, measured and true vertical depth) Packers and SSSV (type, measured and true vertical depth) 12. Stimulation or cement squeeze summary: Intervals treated (measured): Treatment descriptions including volumes used and final pressure: 13a.Representative Daily Average Production or Injection Data Oil -Bbl Gas-Mcf Water -Bbl Casing Pressure Tubing Pressure Prior to well operation: Subsequent to operation: 15. Well Class after work: Exploratory Development Service StratigraphicDaily Report of Well Operations Copies of Logs and Surveys Run Electronic Fracture Stimulation Data Sundry Number or N/A if C.O. Exempt: ADL 0028280 26 - 8306 N/A N/A 204 333 18571 23965 10 360 850 1600 671 705 N/A 13b. Pools active after work:PRUDHOE OIL No SSSV Installed STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS Sr Pet Eng: Sr Pet Geo: Form 10-404 Revised 10/2022 Submit in PDF format to aogcc.permitting@alaska.gov Sr Res Eng: Due Within 30 days of Operations ect to the best of my kn December 5, 2022 By Anne Prysunka at 11:28 am, Dec 06, 2022 RBDMS JSB 120822 DSR-12/6/22WCB 11-26-2024 ACTIVITY DATE SUMMARY 11/27/2022 ***Continue on to 11/28/22*** CTU#9 1.75" Coil 0.145 Wall Job Scope: Mill 4-1/2" CIBP Push to PBTD 12,970' Travel to location, MIRU, M/U Yellowjacket milling BHA, Load well with 5bbls 60/40, 85bbls KCL w/safelube, cap with 10bbls 60/40. RIH, tag CIBP @ 9609 CTM/9634 Mech. Mill thru CIBP Push to 9873' MD stall motor. Wait on Fluid. ***Job in Progress*** 11/28/2022 ***Continue on from WSR 11/27/22*** CTU#9 1.75" Coil 0.145 Wall Job Scope: Mill 4-1/2" CIBP Push below bottom perfs @11,325' Mill CIBP thru Perfs @ 9873' MD. CIBP hung up. Bit stuck - jar free. Milled plug and pushed to 11335'. Pulled heavy at 9850, jar down free then POOH while FP CT. L/D Tools. RDMO ***Job Complete*** Daily Report of Well Operations PBU G-23B @ Mill CIBP thru Perfs @ 9873' MD. CIBP hung up. Bit stuck - jar free. Milled plug and pushed to 11335'. CIBP fish is correctly shown on the WBS below. -WCB O STATE OF ALASKA E -E '� �.� ° �"" ALASKA OIL AND GAS CONSERVATION COMMISSION - REPORT OF SUNDRY WELL OPERATIONS 1. Operations Performed Length: Size: .IAN 1 I ZU19 Abandon ❑ Plug Perforations 0 Fracture Stimulate ❑ Pull Tubing ❑ Operations shutrydown 11Suspend 11Perforate 0 Other Stimulate ❑ Alter Casing 11 Change Arr �m �❑ pp�p{eq Plug for Reddll ❑ Perforate New Pool ❑ Repair Well ❑ Re-enter Susp Well ❑ Other. Set CIBP v 0 2. Operator Name: BP Exploration (Alaska), Inc 4. Well Class Before Work measured 5. Permit to Drill Number: 209-144 3, Address. P.O. Box 196612 Anchorage, Development 0 Exploratory ❑ feet Packer AK 99519-6612 Stratigraphic ❑ $ervice ❑ S. API Number: 60-029-21680-02-00 7. Property Designation (Lease Number): ADL 028280 e. Well Name and Number: PBU G-238 9. Logs (List logs and submit electronic and printed data per 20AAC25.071): 10. Field/Pools: 644 7' 7876-8520 7858-8435 PRUDHOE BAY. PRUDHOE OIL 5410 11, Present Well Condition Summary: Length: Size: MD: TVD: Burst: Collapse. Total Depth: measured 11420 feet Plugs measured 9629 feet true vertical 9032 feet Junk measured 11324, 11332, 11344 feet Effective Depth: measured 9629 feet Packer measured 8241 feet true vertical 9030 feet Packer true vertical 8193 feet Casing: Length: Size: MD: TVD: Burst: Collapse. Structural Tubing Pressure Prior to well operation: 273 25726 23 I I '7/ 1 4 Conductor 80 20" 31 - 111 31 - 111 0 Surface 2656 13-3/8" 30-2686 30-2686 5380 / 6390 2670 / 3470 Intermediate 8036 9-5/8" 28-8064 28-8034 6870 4760 Liner 644 7' 7876-8520 7858-8435 7240 5410 Liner 3061 4-1/2" 8358-11419 8295-9032 8430 7500 Perforation Depth: Measured depth: 8531-11325 feet True vertical depth: 8445-9030 feet Tubing (size, grade, measured and true vertical depth) Packers and SSSV (type, measured and true vertical depth) 12. Stimulation or cement squeeze summary Intervals treated (measured): 4-1/2' 12.6# L-80 26-8370 4-1/2" HES TNT Perm Packer No SSSV Installled Treatment descriptions including volumes used and final pressure 8241 26-8306 8193 13. Representative Daily Average Production or Injection Data WAG ❑ Oil -Bbl Gas-Mcf Water -Bbl Casing Pressure Tubing Pressure Prior to well operation: 273 25726 23 I I '7/ 1 4 0 774 Subsequent to operation: 420 21171 0 0 686 14.Attachments("uire per20MC25,070,25,071.425.2W) 15. Well Class after work: Daily Report of Well Operations 0 Exploratory ❑ Development 0 Service ❑ Stratigraphic ❑ Copies of Logs and Surveys Run ❑ 1B. Well Status after work: Oil 0 Gas ❑ WDSPL ❑ Printed and Electronic Fracture Stimulation Data Cl I GSTOR ❑ WINJ ❑ WAG ❑ GINJ ❑ SUSP ❑ SPLUG ❑ 17. 1 hereby cergfy that the foregoing is true and correct to the best of my knowledge. Authorized Name: Oshiro, Joleen Sundry Number or N/A if C.O. Exempt: N/A Contact Name: Oshiro, Joleen Authorized Title: EG Pad EngineedNew Wells Delivery PE Contact Email: JOLEEN.OSHIROAbp.com Authorized Signature: �j/h.(/ )�� Date: I I '7/ 1 4 Contact Phone: +1 907 564 4606 Form 10104 Revised 04/2017 11 .ey�nl RBM1S 1AN 2 2 2019 Submit Original Only Daily Report of Well Operations PBU G -23B ACTIVITVIIATF 'Zi IRARAADV 12/21/2018 "'JOB STARTED ON 21 -DECEMBER -2018*** (SLB ELINE: SET CIBP) WELL SHUT IN ON ARRIVAL. INITIAL T/1/0 = 1400/1300/500. RUN 1: RIGGED UP BAKER 4.5" CIBP. STANDBY FOR LRS TO ARRIVE. ***JOB CONTINUED ON 22 -DECEMBER -2018' ***JOB CONTINUED FROM 21 -DECEMBER -2018*** (SLB ELINE: PLUG SET AND PERF) LRS LOAD TUBING WITH 200 BBLS OF CRUDE AND ASSIST WITH PUMPING DOWN CIBP. RUN 2: RIH W/ BAKER 4.5" CIBP. SETAT 9630' ME, TOP OF PLUG (cD. 9629'. RUN 3: RIH W/ 2.5" POWERJET OMEGA. 25' LOADED. 6 SPF. 60 DEG PHASED. PERFORATE 8531'- 8556'. CCL TO TOP SHOT = 11.5', CCL STOP DEPTH = 8519.5' RDMO. PAD U71TM fFI�D ON DEPARTURE. WELL SHUT IN ON DEPARTURE. FINAL T/I/O = 40/1300/600. 12/22/2018 ***JOB COMPLETE ON 22 -DECEMBER -2018' TREE= 4-1/16'CSN WaLEEID= WEVOY ACTUATOR= BAKERC OKE. B EV = 71.7- RBF ELEV - 6288' BF. EEV = 35.12' KOP= 7419' Max Angle = 93' @ 10704' Datumb0= 9083' DatumTVD= 8800'SS 120- UUNMICTOR, D= T 1-1 13-38' CSG, 72#, 2895' L-80 / S-95 BUTT, D = 12.347- 9-5/8- CSG, 47#, L-80 NSCC4221' XO TO L-80 BUR TOP OF 7- LNi 7887' Minimum ID = 3.725" @ 8357' 4-112" HES XN NIPPLE 9-5/8• STUB 12.60.13CR-85 VAM TOP, SAFETY NOTES: W ELL 1/2 CHROME TBG ` ANGLE> 70° @ 9319" G _2 V B 4-112" PERFORATION SUk"RY REF LOG: WA ANGLE AT TOP PEW: 83° @ 8531' Note: Refer to Production DB for historical pert data SIZE SPF INTERVAL Op VSqz DATE SOZ 2-1/2' 6 8531-8556 O 12:12!18 WWII 2-7/8' 6 9510-9600 O 12/27/15 SO w 2-7/8' 6 9720-9780 C 11/13/12 0 2-7/8' 6 9860-9890 C 11/12(12 2-7/8' 6 10200-10450 S 08117/10 07/31/11 2-71W 6 10700 - 11325 C 08/15/10 LW 26#, L-80 VAM TOP FIC, .0383 bpf, V= 6.276 - EM 3 JOINTS = L-80 BTC -M) 4-1/2" LNK 12.6#, L-80 BT -M XO TO L-80 TC = 3.958' m TOP OF CBrER GAS LIFT MANDRELS ST MD I ND I DEV TYPE VLV LATCH PORT DATE 3 3697 3697 0 MMG DOME RK 16 WWII 2 5476 5476 1 I4MG SO w 20 0886111 1 6675 8675 0 MMG OFAY PoC 0 08/14110 5_1 9-5/8' X 7' FRE ZXP LTP, BKR HMC LN2 & 71!$ACK SLEF1/E, D=6.180" MLLOLrr Vm)OW (G 23b) 6063' - 8080 1 =Sau>• DATE RB/ BY I LMTE REV BY COMMENTS 01/1587 OFBGINALCOMPLERON 12/31/15 ATO/JMD SET CBRADPE7FS(12/26-27115) 02rM6 CTOSDTRACK(G-23A) 0827118 JTC/JMD MLLEDIR)SEEDCIBP(08f24/18) 08)20110 0441 SIDETRACK(G-238) 09/12/18 DD/JMD ADD®TIEF&BFELEV 08/14/11 JLJ/PJC GLV C)O(05/06)11) 09/17/18 JO/JMD ACTED PERFS 11/16/12 DMJMDGLVC/0&SEFVWDCBP(1 01/07/19 NXVW SETCI3P&AOPERFS(12/22118) 0327/14 JGL/JMD CBP MILLED & Rr*M (03124/14) 14-1/2' HES X NP, D=3.813' 1 IT X 4-1/2- HES TNT PKR D= 3.856" I FES X NP. D= 7- X 5' BKR ZXP LNR TOP PKR w / TIEBACK SLAVE, D = 4.44' 4-1/2• HES XN NP. D = 3.725' 4- V2' VVLBG, D = 3.958' 7- X 5' BKR ZXP FLEX LOCK HANGER D=4.40' jF15H:MLLEYPUSHBKRCBP(8/24/18) II PFdAHOE BAY UNF WELL: G -23B P6a,R No: "2091440 AR No: 50.029.21680-02 SEC 12, TI IN, R13E, 2547 FSL & 1973' FEF BP Exploration (Alaska( z• 3 r'` b zoci 144-0 Regg, James B (DOA) From: Herrera, Matthew F (DOA) (ti ` �I Sent: Sunday, November 5, 2017 3:41 PM k l To: Regg, James B (DOA) Subject: RE: PBU G-Pad Deficiency Report Attachments: G-Pad WH Signs .zip Went by G-Pad and all wells in question had the well house signs replaced with ones with PTD numbers. :f From: Regg,James B (DOA) Sent:Thursday, November 2, 2017 8:57 AM To: Herrera, Matthew F (DOA) <matthew.herrera@alaska.gov> Subject: RE: PBU G-Pad Deficiency Report Please confirm that these well signs have been installed. Deficiency rpt attached so you know which wells. Jim Regg Supervisor, Inspections AOGCC 333 W.70 Ave,Suite 100 Anchorage,AK 99501 907-793-1236 CONFIDENTIALITY NOTICE:This e-mail message,including any attachments,contains information from the Alaska Oil and Gas Conservation Commission(AOGCC),State of Alaska and is for the sole use of the intended recipient(s).It may contain confidential and/or privileged information. The unauthorized review,use or disclosure of such information may violate state or federal law.If you are an unintended recipient of this e-mail, please delete it,without first saving or forwarding it,and,so that the AOGCC is aware of the mistake in sending it to you,contact Jim Regg at 907- 793-1236 or jim.regg@alaska.gov. From:AK, OPS FF Well Ops Comp Rep [mailto:AKOPSFFWellOpsCompRep@bp.com] Sent: Monday, September 25, 2017 8:59 AM To: Herrera, Matthew F (DOA) <matthew.herrera@alaska.gov>; Regg,James B (DOA)<jim.regg@alaska.gov> Cc:AK, OPS GC1 Field O&M TL<AKOPSGC1FieldOMTL2@bp.com>; AK, OPS GC1 Wellpad Lead <AKOPSGC1WellpadLead@bp.com>; AK, OPS FF Well Ops Comp Rep<AKOPSFFWeIIO•sCom•Re• • b•.com> Subject: PBU G-Pad Deficiency Report Matt and Jim, Enclosed is the completed Deficiency Report. The Well House signs have been ordered and are scheduled to ship to the Slope on Tuesday 9/26/17. Upon arrival we will schedule install. Reference the below email from our Data Controller to verify the sign orders. Please call with any questions or concerns that you may have. Vince 1 1k".. ..,4. J, 1, yr rs. ..0 "- i, . ::... , w i". ,act Yom: ' '' ../1 , '. ,� ;3* ,44 • . " ,'� iy. ., . � •• n '�r • I. 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Iti.ilat.$41Alikto SI L 'S -4,- * I;11-'1. 4 1„,11 Ili_ •' ',►' 1. 3. �?F �,ter � [_"�+�'�`�' t "? r * ',1* itl. e . � RR•• Itl ) � � 1111116 = I . • • Regg, James B (DOA) From: AK, OPS FF Well Ops Comp Rep <AKOPSFFWellOpsCompRep@bp.com> Sent: Friday, October 13, 2017 1:40 PM To: Herrera, Matthew F (DOA); DOA AOGCC Prudhoe Bay Cc: AK, OPS FF Well Ops Comp Rep +�lc3� Subject: RE: PBU G-Pad Deficiency Report '7 Matt I was going through some emails and I couldn't find us fully closing out to the completion of the E-Pad wellhouse sign install from the deficiency report you initiated. Therefore, to ensure you have, please be advised that all 8 WH signs have all been installed. Lee Hulme Well Ops Compliance Rep BP Exploration (Alaska) Inc. Office: (907) 659-5332 Cell: (907) 229-5795 Harmony— 7187 (Alternate: Vince Pokryfki) From: Herrera, Matthew F (DOA) [mailto:matthew.herrera@alaska.gov] Sent: Monday, September 25, 2017 9:01 AM To: AK, OPS FF Well Ops Comp Rep Subject: RE: PBU G-Pad Deficiency Report Thank you Sir From:AK, OPS FF Well Ops Comp Rep [mailto:AKOPSFFWeIIOpsCompRep@bp.com] Sent: Monday, September 25, 2017 8:59 AM To: Herrera, Matthew F (DOA) <matthew.herrera@alaska.gov>; Regg,James B (DOA) <jim.regg@alaska.gov> Cc:AK, OPS GC1 Field O&M TL<AKOPSGC1FieldOMTL2@bp.com>; AK, OPS GC1 Wellpad Lead <AKOPSGC1WellpadLead@bp.com>; AK, OPS FF Well Ops Comp Rep<AKOPSFFWelIOpsCompRep@bp.com> Subject: PBU G-Pad Deficiency Report Matt and Jim, Enclosed is the completed Deficiency Report. The Well House signs have been ordered and are scheduled to ship to the Slope on Tuesday 9/26/17. Upon arrival we will schedule install. Reference the below email from our Data Controller to verify the sign orders. Please call with any questions or concerns that you may have. Vince Vince Pokryfki Field Well Compliance Advisor 1 • Regg, James B (DOA) From: AK, OPS FF Well Ops Comp Rep <AKOPSFFWellOpsCompRep@bp.com> Sent: Monday, September 25, 2017 8:59 AM To: Herrera, Matthew F (DOA); Regg,James B (DOA) Cc: AK, OPS GC1 Field O&M TL; AK,OPS GC1 Wellpad Lead;AK, OPS FF Well Ops Comp Rep Subject: PBU G-Pad Deficiency Report Attachments: Deficiency Report PBU G-Pad.xlsx Matt and Jim, Enclosed is the completed Deficiency Report. The Well House signs have been ordered and are scheduled to ship to the Slope on Tuesday 9/26/17. Upon arrival we will schedule install. Reference the below email from our Data Controller to verify the sign orders. Please call with any questions or concerns that you may have. Vince Vince Pokryfki Field Well Compliance Advisor BP Exploration (Alaska) Inc. PBOC - B103 Office: (907) 659-5332 Cell: (907)354-1352 Harmony- 7187 Alternate:Lee Hulme From: Lastufka, Joseph N Sent: Friday, September 22, 2017 4:19 PM To: AK, OPS FF Well Ops Comp Rep Subject: RE: PBU G-Pad Deficiency Report Ordered. Could possibly be ready on Monday. I'll keep you posted. Thank you, Joe Lastufka Information and Data Controller Cell: (907) 227-84961 Office: (907) 564-4091 1 • • :"Ji lil BP Exploration AlaskaI900 E. Benson Blvd.IRoom: 788DIAnchorage, AK From:AK, OPS FF Well Ops Comp Rep Sent: Friday, September 22, 2017 1:21 PM To: Lastufka,Joseph N <Joseph.Lastufka@bp.com> Cc:AK, OPS GC1 Field O&M TL<AKOPSGC1FieldOMTL2@bp.com>; AK, OPS GC1 Wellpad Lead <AKOPSGC1WellpadLead@bp.com>; AK, OPS FF Well Ops Comp Rep <AKOPSFFWellOpsCompRep@bp.com>; Cocklan- vendl, Mary E<mary.cocklan-vendl@bp.com>; Pomeroy,Glen<Glen.Pomeroy@bp.com> Subject: FW: PBU G-Pad Deficiency Report Joe, Can you please order new well house signs for the following G-Pad Wells: G-4, 5, 17, 19, 21, 23, 26, 31. Please utilize the bottom hole locations and Permit numbers found in DWF. GC1 Team, Once the signs arrive please ensure that they are installed asap as this is a "Compliance Issue"with a formal Deficiency Report submitted from the AOGCC. Thanks for the help, Vince Vince Pokryfki Field Well Compliance Advisor BP Exploration (Alaska) Inc. PBOC - B103 Office: (907) 659-5332 Cell: (907)354-1352 Harmony- 7187 Alternate:Lee Hulme From: Herrera, Matthew F (DOA) [mailto:matthew.herrera@alaska.gov] Sent: Friday, September 22, 2017 11:44 AM To: Regg, James B (DOA); AK, OPS FF Well Ops Comp Rep Subject: PBU G-Pad Deficiency Report These were found during SVS testing on pad yesterday Met gmrzewza Petroleum Inspector 2 • . • • Alaska Oil & Gas Conservation Commission Matthew.herrera a,alaska.gov 907-659-2714 (Slope Office) 907-448-1227(Slope Cell) 907-953-7966 (Cell) 3 • • • State of Alaska Oil and Gas Conservation Commission Deficiency Report Location: PBU G-Pad Date: 9/21/2017 , PTD: Multiple Operator: BPXA Type Inspection: SVS Operator Rep: Monty Owens Inspector: Matt Herrera Position: Lead OP Op. Phone: 907-659-4084 Correct by(date): J Op. Email: AKOPSGC1WellpadLead@bp.com Follow Up Req'd: Yes Detailed Description of Deficiencies Date Corrected Mutliple Wellhouse signs on the pad do not have the PTD numbers for that specific well. List of wells with deficient well house signs: PBUA04,05,17,19,21,23,26 and31 Signs ordered on 9/22/17 and scheduled to ship to the BPXA North Slope on 9/26/17. 9/26/17 Sign install scheduled. i See email concerning the Well House sign order. (dated: 9/22/17) Attachments: Monty Owens Operator Rep Signatures: Matt Herrera AOGCC Inspector *After signing,a copy of this form is to be left with the operator. Follow-up Instructions Return a copy of this Deficiency Report to AOGCC(Attention: Inspection Supervisor)within 7 days of receipt. Include the"Date Corrected" and attach supporting documentation for each corrective action implemented to address the deficiencies. If a follow-up inspection was performed by AOGCC, include the date and name of Inspector. Extensions for corrective actions taking longer than the"correct by" date must be requested and accompanied by justification (Attention: Inspection Supervisor). Documentation of deficiences that are outside of AOGCC regulatory jurisdiction will be forwarded to the appropriate authority for follow-up action. Revised 2/2016 STATE OF ALASKA eASKA OIL AND GAS CONSERVATION COMMIS REPORT OF SUNDRY WELL OPERATIOO 1. Operations Performed Abandon ❑ Plug Perforations Q Fracture Stimulate ❑ Pull Tubing ❑ Operations shutdown 0 Suspend 0 Perforate Q Other Stimulate 0 Alter Casing 0 Change Approved Program ❑ Plug for Redrill 0 Perforate New Pool 0 Repair Well 0 Re-enter Susp Well 0 Other:St 7' C LOP "Q.( 2. Operator Name: BP Exploration(Alaska),Inc 4. Well Class Before Work 5. Permit to Drill Number: 209-144 3. Address: P.O.Box 196612 Anchorage, Development Q Exploratory 0 AK 99519-6612 Stratigraphic 0 Service ❑ 6. API Number: 50-029-21680-02-00 7. Property Designation(Lease Number): ADL 0028280 8. Well Name and Number: PBU G-23B 9. Logs(List logs and submit electronic and printed data per 20AAC25.071): 10. Field/Pools: RECHVED PRUDHOE BAY,PRUDHOE OIL 11.Present Well Condition Summary: Total Depth: measured 11420 feet Plugs measured 9650 feet �H q! q true vertical 9032 feet Junk measured 11324/11344 feet 9 201b Effective Depth: measured 9650 feet Packer measured 8241 feet true vertical 9030 feet Packer true vertical 8192.93 feet AOGCC Casing: Length: Size: MD: TVD: Burst: Collapse: Structural Conductor 80 20"Conductor 31-111 31 -111 0 0 Surface See Attachment See Attachment See Attachment See Attachment See Attachment See Attachment Intermediate 8037 9-5/8"47#L-80 28-8064 28-8034 6870 4760 Production Liner See Attachment See Attachment See Attachment See Attachment See Attachment See Attachment Perforation Depth: Measured depth: 9510-9530 feet 9530-9570 feet 9570-9600 feet 9720-9750 feet 9750-9780 feet 9860-9890 10200-10450 feet 10700-11325 feet True vertical depth: 9025-9027 feet 9027-9029 feet 9029-9030 feet 9030-9030 feet 9030-9030 feet 9029-9029 9032-9029 feet 9030-9030 feet Tubing(size,grade,measured and true vertical depth) 4-1/2"12.6#L-80 26-8370 26-8306 Packers and SSSV(type,measured and See Attachment See Attachment See Attachment true vertical depth) 12.Stimulation or cement squeeze summary: Intervals treated(measured): Treatment descriptions including volumes used and final pressure: 5c M$$EV H.b. 1 ' % '!b 13. Representative Daily Average Production or Injection Data Oil-Bbl Gas-Mcf Water-Bbl Casing Pressure Tubing Pressure Prior to well operation: 389 30804 18 1200 725 Subsequent to operation: 289 6306 23 1475 • 250 14.Attachments:(required per 20 AAC 25.070.25.071,&25.283) 15.Well Class after work: Daily Report of Well Operations Q Exploratory 0 Development Q Service 0 Stratigraphic 0 Copies of Logs and Surveys Run ❑ 16.Well Status after work: Oil Q Gas 0 WDSPL 0 Printed and Electronic Fracture Stimulation Data 0 GSTOR ❑ WINJ 0 WAG 0 GINJ 0 SUSP 0 SPLUG 0 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: N/A Contact Catron,Garry R(Wipro) Email Garry.Catron@bp.com Printed Name Catron,Garry R(Wipro) Title PDC Principal Engineer Signature Ac(A._.) Phone +1 907 564 4424 Date 1/18/16 ��r7 q C Form 10-404 Revised 5/2015 y i -- -`/2 1/ 1,t,L• RBDMS t, Jnr4 L 1 2016 Submit Original Only //6 • • C, • OOOoCoo • r. N l CO o cOaoC r� vNn (n C N N N Lo r— U y 0 0 0 0 0 0 0 i co O CO CO CO • 0) M O CO N ' Ca ' (O d CO N- CO CO CO Cr) M ' LO N CO CA CO CO CO CO O CA CO CO O cr O M (N1 N CO CO O) CO H co co co (.() co CC) 01 (0 CO Cr) CD O N CO N N N N- CO QDM co co Ooo O O co CO N O CO CO O Cf) CO N N CO CO CO U QM M co (0 co N o CO N- LO CO • M co 0) O N COM N _ '^ N- CO M W L O U) O Ocp 00 C) U J w J J 00 J J = d "C3 N N N J 0 It N .N N 0 o U o 0 0 (v CO U Ch co co = N N Nt coCNt a• )0 O O CO CO a M Ni- C CO O — O O co C) (fl co O co (70 -J W 0)O L .7)• ° UUU � C7 U CD u__ u_ ct Z z W W W m O D D J H Z Z D U w u In z J 11 I— • • Packers and SSV's Attachment PBU G-23B SW Name Type MD TVD Depscription G-23B PACKER 7887.2 7868.69 7" Baker ZXP Top Packer G-23B TBG PACKER 8240.8 8192.93 4-1/2" HES TNT Perm Packer G-23B PACKER 8368.8 8304.69 5" Baker ZXP Top Packer ro • • 1 ai " - � o •_ b > a O O (n o co > O LL (73 OJ M 4 Oca) O C 72 —O)Q CO -Q a)I O jU) J a) ma) a) ¢ 0c0U o Ua) O L O ` a) ° > C -0 ai ° o = o = C L Q in 2 C N o J . (0 "I iI O m D * O (OO •- p I- N /3 CO -O a o c 0 a Q �� U .- a C O N CO -° t3) Q co L 2 U) 0_ © 0_ a) --i J m Ln ( _ a) a 1 U (J .— 'O r ONOmC a) cocK n O Q O O) 0 =Q(93 (' O L - 0 Ca cu- pp U o O . � moa) mN ai b a 73 °(1) a) oC JLa) _ N � � O (3 o) -o r— 0_ co La •E c L.r) coE co Q 60,4_ 01= m L oQ a .- a 3 . aLC �' aa)) a •it oo a) E a) Q 2 oaQ Nomad 60 � * o cK � O '0 -I �� O * o C to ,_(13 Li: (n ~ Q mu) O 70 a W O a. "O Q co (n m a) ajc) -° ©( 0 ,r W a U fn 0 ca c C Q M ▪ Q * a) o Ln , D ,- ,— _ • , CO D rn LL N o D d a u m C (� > . N > * coSOco O 0 O .- O N > * -O ' O O (' = O . O F- U (o — ), * (A ▪ Z Q a r- tU * a) (,.) L() O Q W > . II H in E Q a) c a) In L_ .'` M m N , a) co a) � a) N Q m Q} a' > Q • .Q m II n 1 (d ,- O w- r > U) = O * D • y) 0u) m .E QO ; (i) 1E 3a -0Lo. � ° ocnON ° sD (t, Cl. 42F- u) _o06 II co '5 O 'a . c\i� 0ci _ M a) 6Ln ?j a) Ur p_ (n a) d Q Q IU OM) Q QN Q R.-.. N Y Op pap O — t L N r wO ° 1— ON 3 ' N � o 0o a) a) � I -731 0 >% a- M a I- cn I I O I I > u) E > O Ln C M _co - C ._ > E as 2M0oN2ocv ° \ > Va oU E _ � a � co r2Cop a) oU EQ .E ,- c6 O X (0 CO O2 —O0 ° � c) -a c) ° � cs o *k N * - a) O i Wu__ i TREE= WEL I-F D 4-1/16"PtEV0 • G_2 3 B 4-1/2" OME T ELL•ANGLE>70°@ 9319'•"• ACTUATOR= BAKER C OKB.ELEV= 71.7' BF. EV= 35.24' I a KOP- 7419' Max Angle= 93°@ 10784' I 2091' -14-1/2"FES X NP,D=3.813" Datum MD= 9083' Datum TV D= 8800'SS ?i 2600' H TOP OF CEMENT 20"CONDUCTOR,D=? ? ) GAS LET MANDRELS ST MD TVD DEV TYPE V LV LATCH FORT DATE 13-3/8"CSG,72#, H 2695' 3 3697 3697 0 MMG DOME RK 16 08/06/11 L-80/S-95 BUTT,D=12.347" X 2 5476 5476 1 MMG SO RK 20 08/06/11 9-5/8"CSG,47#,L-80 NSCC -I 4221' / 1 6675 6675 0 MMG OMY RK 0 08/14/10 XO TO L-80 BUTT 7875' -9-5/8"X 7"FRO ZXP LTP,BKR HMC LNR HGR TOP OF 7'LW H 7897' &TIEBACK SLEEVE,D=6.180" Minimum ID = 3.725" @ 8357' 4-1/2" HES XN NIPPLE ML LOUT WINDOW(G-23b) 8063'-8080' 9-5/8"BOT WHIPSTOCK(08/03/10) H 8062' ii;: ,1 9-5/8"CSG,47#,L-80 BUTT,D=8.681" H 8063' 9-5/8"EZXV(08/03/10) H 8099' 1 8210' --14-12'FES X NP,D=3.813" 5-1/2"TBG STUB(TAGGED 08/02/10) H 8232' j_—N---, 1_ x x 8240' JH 7"X4-1/T FES TNT FCR,D=3.856" I I i 8281' -14-12"HES XNP,D=3.813" 8356' -7"X 5"BKR ZXP LNR TOP PKR 4-1/2"TBG, 12.6#,13CR-85 VAM TOP,.0152 bpf,ID=3.958" -I 8368' / w/TEBACK SLEEVE,D=4.44" \I I 835T H4-12"FES XN NIP,D=3.725" PERFORATION SUMMARY l�LOG:WA '/ ANGLE AT TOP PERF: 83°@ 9510' TN /r�i 8369' H4-1/2"WLEG,D=3.958" Note:Refer to Production DB for historical perf data 8373' -7"X 5'BKR ZXP FLEX LOCK SIZE SPF INTERVAL Opn/Sgz DATE SOZ HANGER D=4.40' 2-7/8" 6 9510-9600 0 12/27/15 2-718" 6 9720-9780 C 11/13/12 8382' -5'X 4-12"XO,D=3.958" 2-7/8" 6 9860-9890 C 11/12/12 ' 2-7/8" 6 10200-10450 S 08/17/10 07/31/11 2-7/8" 6 10700- 11325 C 08/15/10 - 9650' -4-112"BKR 1 AA CSP(1226115) 1 7"LNR,26#,L-80 VAM TOP HC,.0383 bpf,ID=6.276" - 8519' 1 ' (BTM 3 JOINTS=L-80 BTC-M) 11344'CTM -14-12"WFD CEP MILLED(03/24/14) 4-1/2"LNR 12.6#,L-80 BT-M XO TO L-80 TCI H 9368' 41 11324' _H FISH-MLLED CEP(08/05/11) 4-1/2'LNR 12.6#,L-80 TCI XO TO L-80 BT-M -I 1127T PBTD -I 11329' IL-1/2"LNR, 12.6#,L-80 BT-M,.0152 bpf,D=3.958" -1 11418' •,•j DATE REV BY COMutENTS LATE REV BY COMuU 1TS PRUDHOE BAY UNIT 01/15/87 ORIGINAL COMPLETION 12/31/15 ATO/JI4D SET CBPIADPERFS(12/26-27/15) WELL: G-23B 02/23/96 CTD SDTRACK(G-23A) FERMT No: 2091440 08/20/10 D-141 SIDETRACK(G-23B) AR No: 50-029-21680-02 08/14/11 JLJ/PJC GLV C/O(08106/11) SEC 12,T11N,R13E,2542'FSL&1973'FEL 11/16/12 DMS/JMD GLV GO&SET WFDCBP(11/12/12) ' 03/27/14 JGUJM) CBP MLLED 8 PUSHED(03/24/14) BP Exploration(Alaska) • 4 i Image Project Well History File Cover Page XHVZE This page identifies those items that were not scanned during the initial production scanning phase. They are available in the original file, may be scanned during a special rescan activity or are viewable by direct inspection of the file. c.D 9 - J 4_i4 Well History File Identifier Organizing (done) ❑ Two -sided III 1E11111 IIII ❑ Rescan Needed III IIIIIIII II IIII 1 RE AN DIGITAL DATA OVERSIZED (Scannable) for Items: ❑Diskettes, No. ❑Maps: VI Greyscale Items: ❑Other, No/Type: ❑Other Items Scannable by a Large Scanner 0 Poor Quality Originals: OVERSIZED (Non - Scannable) ❑ Other: ❑ Logs of various kinds: NOTES: ❑ Other:: BY: Maria Date: 30 13 /s/ IA Project Proofing I 01111 BY: , Maria) Date: 3Q /3 /s' Vt r 1 Scanning Preparation a x 30 = (D d + d.9 = TOTAL PAGES v (Count does not include cover sheet) BY: _ Mari Date: V30it /s/ Production Scanning 131I11101111 O Stage 1 Page Count from Scanned File: C I (Count does include cover eet) Page Count Matches Number in Scanning Preparation: YES NO BY: Maria Date: 4-/30 1 / 3 /s/ V4 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. 1111 1111111111111 ReScanned 1111111011111 BY: Maria Date: /s/ Comments about this file: Quality Checked I 10/6/2005 Well History File Cover Page.doc STATE OF ALASKA • f, SKA OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS I • 1.Operations Abandon [J Repair Well i_ Plug Perforations Lf Perforate U Other ILI M_ III CIBP Performed: Alter Casing ❑ Pull Tubing❑ Stimulate-Frac ❑ Waiver ❑ Time Extensions 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 ❑ . 209-144-0 3.Address: P.O.Box 196612 Stratigraphic❑ Service ❑ 6.API Number: Anchorage,AK 99519-6612 . 50-029-21680-02-00 7.Property Designation(Lease Number): 8.Well Name and Number: ADL0028280 r PBU G 23B 9.Logs(List logs and submit electronic and printed data per 20AAC25.071): 10.Field/Pool(s): PRUDHOE BAY,PRUDHOE OIL 11.Present Well Condition Summary: Total Depth measured . 11420 feet Plugs measured None feet 41 ie- 1 I true vertical 9031.67 feet Junk measured See Attachment feet CIL . Effective Depth measured .. 11329 feet Packer measured See Attachment feet true vertical 9029.64 feet true vertical See Attachment feet Casing Collapse Length Size MD TVD Burst 9 Structural None None None None None None Conductor 80 20"Conductor 30-110 30-110 0 0 Surface See Attachment See Attachment See Attachment See Attachment See Attachment See Attachment Intermediate None None None None None None Production 8052 9-5/8"47#L-80 28-8080 28-8048.64 6870 4760 Liner See Attachment See Attachment See Attachment See Attachment See Attachment See Attachment Perforation depth Measured depth 9720-9750 feet 9750-9780 feet 9860-9890 feet 10200-10450 feet 10700-11325 feet True Vertical depth 9029.99-9030.18 feet 9030.18-9029.82 feet 9029.02-9029.37 feet 9031.98-9028.76 feet 9029.93-9029.59 feet Tubing(size,grade,measured and true vertical depth) See Attachment See Attachment See Attachment Packers and SSSV(type,measured and true vertical depth) See Attachment See Attachment See Attachment Packer None None None SSSV 12.Stimulation or cement squeeze summary: 2�1' RBDMS MAY 16 2014 Intervals treated(measured): NED ,J yUUN 1 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: 343 16689 13 0 713 Subsequent to operation: 530 8863 17 0 219 14.Attachments: 15.Well Class after work: Copies of Logs and Surveys Run Exploratory❑ Development❑, t Service❑ Stratigraphic ❑ 1 Daily Report of Well Operations X 16.Well Status after work: Oil .❑ Gas L) WDSPLJ GSTOR ❑ WINJ ❑ WAG ❑ GINJ ❑ SUSP 0 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: N/A Contact Analisa Steger Email AnaliSa.Ste•er• BP.Com Printed Name Analisa Steger Title PDC Data Manager Signature Phone 564-5439 Date 4/21/2014 1 lit 1,F 5/22Jl4c Form 10-404 Revised 10/2012 Submit Original Only _ -cfCo § k t r 2 ¥ > \ ƒ f .§ \ CO \ \\ R / k (0 / / f 4 2 2 — © . = E 9 a) _ - / \ 2 \ f co $ § / \ § co u) \ 13 22 a = § § % % @ 7 ® b / 2 £ _ 0 o f 0 e > 0) ° I $ -o ± E f g / \ a_ \\ coc2 [ .c % ¢f / \ $ k b \ / f & E = m I m \ 0 = 7 2 t Seo e = 3 = E 2 Cl) ƒ ƒ k E co k 3 ,, eL o o E 2 £ c E E \ E - _ \ m / o 0 \ — m E E o s- R L A / / e ¢ \ ® 2 2 2 � . _6 < r 7 = f / / r b 4 _ � - - e >.R t O 2 . k E e & E 'E f E \ _a b g ƒ / ® / 2 > \ a Et q I \ woo = $ f I ± 0 \ . o) ® � n m o - O o t D co co a5 \ / Q k = Q / - a / 3 0 4 7 co o o Q / - / \ i 7 E J 7 \ - E k CI A / e = / E — o 2222 '® 9 \ \ .Rs / k A4 § \ Ce m iii ± ± r o eco tno = >+ ,- co_ a) / g / / 02 A \ 7o . o b o e m E . 0 / ,- e CI / / 2 \ / / • \ / ± \ i to / \ U e 0 E ® 0 3 »� = 1il ! EO4 -eQ0 o o = e .goa / = a® & c \ \ \ $ 2 f \ e 2 ° \ Z e e ƒ e co e E 6- 0 2 2 6 2 ƒ / / / ( H \H 0 \ = 2 k \ = / 6 — \ \ 0,I- (..) « U I < E t o o E < E E (30 ,;,- O t -4- .4- .1- % \ \ 7 9 ® e e CV d / / CO CO CO CO G-23B 209-144-0 Junk Attachment SW Name MD Date Description G-23B 11324 8/6/2011 Milled Composite Plug G-23B 11344 3/25/2014 MILLED CIBP a o 0 0 0 0 0 0 0 t4 — v �n r� co 00 In In In (() Iv NrN N 00 N- N- U o 0 0 0 0 0 = o i NrM N- M O) N M CV) M N M O M O V- V M r- M M d' O O 00 M M (O (O O O) 00 00 00 M M 0 0 0 0 0 O O O M M M M M O) 00 N N M M M I lllll H O O O 0) O i M 00 O O O m M LUO N N O N N N co N O 00 O N m O) O m 00 O O) (O (O CO L0 0 0 (O M M M 00 M N N 00 M 00 V • 0 4-§ CO N CO or- Lo0orno (o (o (o � M 00 M N N O N N N CO .Q 0 � J H 0 101010 • Qo o1naoOo � O °0000 °39000 C o 00 J J U) ( C) M 0> a J CO N N 4 4k *k ▪N U N c * c M M M O (O N JNN � ooOo - - N , M M 444 M M M 0)O V (O LC) f� M V V' ,r c 00 ,r0 0 O) O M M M C) O M 00 O 00 00 00 J c Z O a1- Hww co 000 A p C c p LL Z Z Z V Z w w O CCCCm m M OZZCMDDD 0 J J Q U) U) H H H Packers and SSV's Attachment ADL0028280 SW Name Type MD TVD Depscription G-23B PACKER 7875 7857.09 7" Baker ZXP Top Packer G-23B PACKER 8240 8192.23 4-1/2" HES TNT Perm Packer G-23B PACKER 8356 8293.6 5" Baker ZXP Top Packer d N N m co N ti CO O r CO M N- In _ O O) O) O O) p> CO N N N N a 0 0 0 0 0 O) O) d1 O) C) F Q 0 I— O) CO N 00 CO L O) r O O) C O) O d1 O) W N CO N CO N a 0 0 0 0 0 p O) O) O) O) O) m N f6 CO y O O14 N C Q L) co O) 1 M N I� N. 00 O '— CI O) O) O)CD r r N f0 d 2 V O ". CO QCO Q N o F C O s 0 0 0 0 0 N J a • 1� Li-E....) 00 N I� a p 0 0 0 0 0 d 0.. 2 CD CL a O• LL LL LL U) U) CLaa. aCL d QQQCOm a 0 t m a is N N_ N N_ _ p 0 0 0 0 0 g N N N N N M CO N N N CO r r r r O r r r r r G) E fC 20303030303 • co co CO CO CO . N N N N 00606 TREE= 4-1/16"CNV ACTUATOR= BAKER C -z U LI 4 12"CHROME TBGL***ANGLE>70" 9319'*a* 'OKB.ELEV= 71.7' I I BF.ELEV= 35.24' KOP= 7419' _ Max Angle= 93°@ 10784' I I 2091' H4-1/2"FES X NP,D=3.813" Datum MD= 9083 j Datum ND= 8800'SS 2--{ 2600' HTOP OF CEMENT 20"CONDUCTOR,D=? H ? , GAS LFT MANDRELS ST MD ND DEV TYPE VLV LATCH FORT DATE 13-3/8'CSG,72#, H 2695' 3 3697 3697 0 MMG DOME RK 16 08/06/11 L-80 I S-95 BUTT,I)=12.347" X 0. 2 5476 5476 1 MMG SO RK 20 08/06/11 9-5/8"CSG,47#,L-80 NSCC -j 4221' / 1 6675 6675 0 MMG MY RK 0 08/14/10 XO TO L-80 BUTT 7875' —9-5/8"X 7"HRD ZXP LIP,BKR HMC LMR HGR TOP OF 7"LNR H 7897' &TIEBACK SLEEVE,D=6.180" Minimum ID = 3.725" @ 8357' 4-1/2" HES XN NIPPLE MLLOUT vNNDOW(G-23b) 8063'-8080' 9-5/8"BOT WM:STOCK(08!03/10) —I 8062' 9-5/8"CSG,47#,L-80 BUTT,D=8.681" H 8063' 9-5/8"EZXV(08!03/10) H $099• — i 8210' H4-1/rFES XNP,D=3.813" 5-1/r TBG STUB(TAGGED 08/02/10) --I 8232• 1— 8240' H r x 4-1/2"HES TNT R(R,13=3.856" Ir�"TJX, • 8281' H4-1/7 FES X NP,D=3.813" 8356' —{r X 5"BKR ZXP LNR TOP FKR 4-1/2"TBG, 12.6#,13CR-85 VAM TOP,.0152 bpf,D=3.958' H 8368' / w/TFEBACK SLEEVE D=4.44" i 8357' H4-1/2"FES XN NP,13=3.725' PERFORATION SUMMARY FIEF LOG:NA .. / ,„ ANGLE AT TOP PERF:890 @ 97208369' H4 1/r WLEG,D=3.958" Note:Feer to A-oduction DB for historical pert data 8373' I--7"X 5"BKR ZXP FLEX LOCK SIZE SPF INTERVAL Opn/Sqz DATE SQZ HANGED D=4.40" 2-7/8" 6 9720-9780 O 11/13/12 8382' H5"X 4-1/2"XO,D=3.958" 2-7/8" 6 9860-9890 O 11/12/12 2-7/8" 6 10200-10450 S 08/17/10 07/31/11 2-7/8" 6 10700-11325 0 08/15/10 ' 7"LNR,26#,L-80 VAM TOP EC,.0383 bpf,D=6.276" —1 8519' v' (BTM 3 JOINTS=L-80 BTC-M) 11344'CINI —14-1/2'WFD CEP MILLED(03/24!14) 4-1/2"LMR,12.6#,L-80 BT-M XO TO L-80 TCI H 9368' 11324' , —I FISH-WILLED CBP(08/05/11) 4-1/2"LNR, 12.6#,L-80 TCI XO TO L-80 BT-M H 11277' •-•'•"4 PBTD H 11329' 4-1/2"LNR,12.6#,L-80 BT-M,.0152 bpf,D=3.958' -1 11418' • �•��i DATE FEV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 01/15/87 ORIGINAL COMPLETION 08/14/11 JJU PJC MLL CEP&PUSH BTM (8/5/11) WELL: G-238 02/23/96 CTD SDTRACK(G-23A) 08/14/11 JLJ/PJC GLV CYO(08/06/11) FERWIT No: 2091440 08/20/10 D-141 SIDETRACK(G-23B) 11/16/12 DMS/JMD GLV C/O&SET WFDCBP(11/12/12) AR No: 50-029-21680-02 08/23/10 PJC DRLG HO CORRECTIONS 03/27/14 JGUJM) CBP PALED&PUSHED(03/24/14) SEC 12,T11N,R13E,2542'FSL&1973'FEL 09/28/10 JGR/PJC FINAL DRLG CORRECTIONS 08/14/11 RUN PJC SQZ PERFS(8/1/11) BP Exploration(Alaska) DATA SUBMITTAL COMPLIANCE REPORT 8/9/2012 Permit to Drill 2091440 Well Name /No. PRUDHOE BAY UNIT G -23B Operator BP EXPLORATION (ALASKA) INC API No. 50- 029 - 21680 -02 -00 MD 11420 TVD 9032 Completion Date 8/20/2010 Completion Status 1 -OIL Current Status 1 -OIL UIC N REQUIRED INFORMATION Mud Log No Samples No Directional Sure: DATA INFORMATION Types Electric or Other Logs Run: DIR / GR / RES, DIR / GR / RES / NEU / DEN (data taken from Logs Portion of Master Well Data Maint Well Log Information: III Log/ Electr Data D' ital Dataset Log Log Run Interval OH / Type d /Frmt Number Name Scale Media No Start Stop CH Received Comments Rpt / LIS Verification 8489 11416 Open 9/13/2010 ED ,ti Lis 20118 Induction /Resistivity 8489 11416 Open 9/13/2010 OH LIS NPHI, FCNT, NCNT, PEF, RHOB, DRHO, GR, RPS, FET, RPM, RPX, RAT Plus PDF, EMF & CGM f Graphics Log Induction /Resistivity 25 Col 8063 11420 Open 9/13/2010 MD ROP, DGR, ALD, CTN, EWR Log Induction /Resistivity 25 Col 8033 9032 Open 9/13/2010 TVD DGR, EWR Log G Production 25 Blu 9525 11196 Case 5/4/2011 mem PPL, PSP, GR, CCL, Spin, Temp, Pres, Ghost ED tPds 20958 Production 9525 11196 Case 5/4/2011 mem PPL, PSP, GR, CCL, Spin, Temp, Pres, Ghost Well Cores /Samples Information: • Sample Interval Set Name Start Stop Sent Received Number Comments ADDITIONAL INFORMATION Q�� Well Cored? Y �I Daily History Received? `'! N Chips Received? Y-/-N— Formation Tops a N Analysis Y/_ Received? Comments: DATA SUBMITTAL COMPLIANCE REPORT 8/9/2012 Permit to Drill 2091440 Well Name /No. PRUDHOE BAY UNIT G -23B Operator BP EXPLORATION (ALASKA) INC API No. 50- 029 - 21680 -02 -00 MD 11420 TVD 9032 Completion Date 8/20/2010 Completion Status 1 -OIL Current Status 1 -OIL UIC N Compliance Reviewed By: Date: 1 (� i _ Z._. • • RECEIVED STATE OF ALASKA , AKA OIL AND GAS CONSERVATION COMMON DEC 18 2012 REPORT OF SUNDRY WELL OPERATIONS 1. Operations Abandon U Repair Well U Plug Perforations U Perforate U Other U AOGCC Performed: Alter Casing ❑ Pull Tubing0 Stimulate - Frac ❑ Waiver ❑ Time Extension❑ Change Approved Program 0 Operat. Shutdown0 Stimulate - Other 0 Re-enter Suspended We II ❑ 2. Operator 4. Well Class Before Work: 5. Permit to Drill Number: Name: BP Exploration (Alaska), Inc Development IS Exploratory ❑ 209 -144 -0 3. Address: P.O. Box 196612 Stratigraphic Service ❑ 6. API Number: Anchorage, AK 99519 -6612 J 50- 029 - 21680 -02 -00 7. Property Designation (Lease Number): 8. Well Name and Number: .., ADL0028280 PBU G -23B 9. Logs (List logs and submit electronic and printed data per 20AAC25.071): 10. Field /Pool(s): A To Be Submitted PRUDHOE BAY, PRUDHOE OIL 11. Present Well Condition Summary: Total Depth measured 11420 feet Plugs measured 10130 feet true vertical 9031.67 feet Junk measured 11324 feet Effective Depth measured 10130 feet Packer measured See Attachment feet true vertical 9033.51 feet true vertical See Attachment feet Casing Length Size MD TVD Burst Collapse Structural None None None None None None Conductor 80 20" Conductor 30 - 110 30 - 110 0 0 Surface 1973 13 -3/8" 72# L -80 29 - 2002 29 - 2001.99 4930 2670 Intermediate None None None None None None Production 8052 9 -5/8" 47# L -80 28 - 8080 28 - 8048.64 6870 4760 Liner See Attachment See Attachment See Attachment See Attachment See Attachment See Attachment Perforation depth Measured depth 9720 - 9750 feet 9750 - 9780 feet 9860 - 9890 feet 10200 - 10450 feet 10700 - 11325 feet True Vertical depth 9029.99 - 9030.18 feet 9030.18 - 9029.82 feet 9029.02 - 9029.37 feet 9031.98 - 9028.76 feet 9029.93 - 9029.59 feet Tubing (size, grade, measured and true vertical depth) 4 -1/2" 12.6# 13Cr85 . sor-26-rtin9 26 - 8304.87 Packers and SSSV (type, measured and true vertical depth) See Attachment See Attachment See Attachment Packer None None None SSSV 12. Stimulation or cement squeeze summary: p 1 1 2013 N Intervals treated (measured): NE° LIAR C Treatment descriptions including volumes used and final pressure: n G 13. Representative Daily Average Production or Injection Data Oil -Bbl . Gas -Mcf Water -Bbl Casing Pressure Tubing Pressure Prior to well operation: 257 15464 6 0 679 Subsequent to operation: 264 15184 10 0 662 14. Attachments: 15. Well Class after work: Copies of Logs and Surveys Run Exploratory❑ Development III Service ❑ Stratigraphic ❑ Daily Report of Well Operations X 16. Well Status after work: Oil U Gas U WDSPQJ GSTOR ❑ WINJ ❑ WAG ❑ GINJ ❑ SUSP ❑ SPLUCEI 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: N/A Contact Garry Catron Email Garry.CatronaBP.Com Printed Name Garry Catron Title PDC PE J Signature 6/441 Phone 564 -4424 Date 12/17/2012 _ CP 7,6 /2.2viz- 0 , 1 /271.0n).-- Form 10 -404 Revised 10/2012 Submit Original Only • • Packers and s Attachment ADL0028280 SW Name Type MD TVD Depscription G -23B PACKER 7875 7794.43 7" Baker ZXP Top Packer G -23B PACKER 8240 8129.57 4 -1/2" HES TNT Perm Packer G -23B PACKER 8356 8230.94 5" Baker ZXP Top Packer Casing / Tubing Attachment ADL0028280 Casing Length Size MD TVD Burst Collapse CONDUCTOR 80 20" Conductor 30 - 110 30 - 110 LINER 644 7" 26# L -80 7875 - 8519 7857.09 - 8434.37 7240 5410 LINER 3062 4 -1/2" 12.6# L -80 8356 - 11418 8293.6 - 9031.62 8430 7500 PRODUCTION 8052 9 -5/8" 47# L -80 28 - 8080 28 - 8048.64 6870 4760 SURFACE 1973 13 -3/8" 72# L -80 29 - 2002 29 - 2001.99 4930 2670 TUBING 8343 4 -1/2" 12.6# 13Cr85 26 - 8369 26 - 8304.87 9020 8540 • i 1 • • Daily Report of Well Operations ADL0028280 CTU 8 w/ 1.75" CT. Job Scope: Drift / PPROF / Contingent CIBP / Add Perfs «InterAct Publilshing» Rig up, function test BOPE Drift Tubing and Liner w/ 3.7" nozzle. Tag obstruction @ 10710' CTM PUH to 10660' CTM and paint white flag on CT. Phone APE Lee Duong, decision made to run PPROF RIH Memory PSP w /Ghost OAL = 31.98' POP well after 500' in hole. Start stagging choke to optimal flowing peramiters, looking for choke 11/10/2012 setting at 96 deg. ...Continue WSR on 11/11/12... CTU 8 w/ 1.75" CT. Job Scope: Drift / PPROF / Contingent CIBP / Add Perfs «InterAct Publilshing» ...Continue WSR from 11/10/12'... Well stabilized perform flowing five min stop counts at 8300' / 9300' / 10100' / 10600' / 10683' Made flowing up /down passes at 40 fpm and 60 fpm from 10683' to 10000' last up /down pass at 80 fpm from 10683' to 8100' (jewelry log) . Good data.. Log sent to town APE Lea Duong for evaluation. Decision made to proceed with program. RIH with 4 1/2" Weatherford CIBP 33000# Shear 11/11/2012 ...Continue WSR on 11/12/12... CTU 8 w/ 1.75" CT. Job Scope: Drift / PPROF / Contingent CIBP / Add Perfs «InterAct Publilshing» ...Continue WSR from 11/10/12... Set 4 1/2" Weatherford CIBP at 10130'._ corrected depth. RIH w/ 2.375" ctc, dfcv, disco, blank sub, 2.13" firing head assy,30x 2.88" PJ omega perf gun, (oal= 38.35') Tag CIBP and correct depth and shoot 9860 -9890 interval. pooh. All shots fired. Job suspended due to weather conditions ...Continue WSR 11/12/2012 on 11/13/2012... CTU 8 w/ 1.75" CT. Job Scope: Drift / PPROF / Contingent CIBP / Add Perfs «InterAct Publilshing» ...Continue WSR from 11/10/12... RIH w/ Perf guns #2 & #3 2 3/8" MHA, 2.13" CBF Firing Head, 2.88 - x 30 PJ Omega, 2906, 6 spf Ent. Hole = 0.34" Pen. = 36" (OAL = 38.35') Shoot perf intervals 9750' -9780' and 9720'- 9750' All shots fired on both perf runs. 11/13/2012 ...Continue WSR on 11/14/12... Continued from WSR 11 -13 -12 . Job Scope: Drift / PPROF / Contingent CIBP / Add Perfs 11/14/2012 Perfrom weekly BOP test. Rig down ***Job Complete* ** • 1 TREE= 4 -1/16" aW • ViaLFEAD = MtEVOY S wet ANGLE we ANGLE > 70° @ 9319' °°° G-23B ACTUATOR BAKB2 C 4 -1/2" CHROME TBG ° :. _B. KB. EV =-- 71.69' ( I KOP= -- NW Max Angle = 93° 10784' 1 1 I 2091' H4 -1/2' FES X NP, ID = 3.813" Datum ID = 9083' Datum TVD= _ 8800' SS �y 2600' HTOPOF cas.E T I 120" TOR D = ? H ? •, GAS LFT MkNDRE _S ST MD TVD DEV TYPE VLV LATCH PORT DAIS 13-3/8' CSG, 72#, ri 2695' 3 3697 3697 0 MMG DONE RK 16 08/06/11 L -80 / S-95 BUTT, D = 12.347" Y I I L 2 5476 5476 1 J43 SO RK 20 08/06/11 9 -5/8" CSG, 47 #, L -80 NSCC —1 4221' .12K 1 6675 6675 0 NMG DMY RIC 0 08/14/10 XO 10 L-80 BUTT I 7875' I— 9-5/8" X 7" FFD ZXP LTP, BKR FNC LNR HGR ITOP OF 7" LNR H 789T & TI$ACK SLEEVE, ID = 6.180" Minimum ID = 3.725" @ 8357' 4 -112" HES XN NIPPLE MLLOUTVVIDOW(G -23b) 8063' -8080' 9 -5/8" BOT VVHPSTOCK (08/03110) H 8062' 19- 518" CSG, 47 #, L -80 BUTT, D = 8.681" H 8063• 1 9-5/8" EZXV (08103/10) H 8018• ' I 8210' H4 -1/2" FES X NP, D = 3.813° I 15 -1/2" TBG STUB (TAGGED 08/02/10) H 8232' I mi r------ 1 • x ∎ M 8240' Hr X 4-1/2" FES TNT PKR ID= 3.856° I 1 8281' 1-14 -1/2" FES X NP, D = 3.813" I J 8356' I— r X 5' BKR ZXP U•12 TOP PKR 14-1 /2" TBG, 12.6#, 13CR-85 VAM TOR .0152 bpf, D = 3.958" H 8368" / w / TESACK SLEEVE, D = 4.44" , PERFORATION SUMMARY I 835T H4 -1/2" FES XN NP, D= 3.725" 1 REF LOG: WA .�,... ANGLE AT TOP PE : 89° @ 9720' N 8369' H41/2" IALEG, D = 3.958 I Note: Refer to Roduction DB for historical pert data 8373' I— r X 5" BKR ZXP FLEX LOCK SIZE SPF MJTBtVAL Opn/Sgz DATE SQZ HANG D = 4.40" 2 -7/8" 6 9720 -9780 0 11/13/12 8382' H5" X 2 -7/8" 6 9860 -9890 0 11/12/12 41/2" XO, D= 3.958" I 2 -7/8" 6 10200 - 10450 S 08/01/11 2 -7/8" 6 10700 - 11325 C 08115/10 ' —_, 7" LM , 26#, L -80 VAM TOP HC, .0383 bpf, D = 6.276" —I 8519' (BTM 3 JOINTS = L-80 BTC -M) 10130' I- 141/2" WFD CBP (11/12/12) 1 141/2' LNR, 12.6#, L -80 BTM XO TO L-80 Tal H 9368' MI 11324' FISH - /ALUM CBP (08/05/11) 1 141/2" LNR, 12.6#, L -80 TCI XO TO L-80 BT -M 11277 • • • • •"41 PBTD 11329' • 14-1/2" LMT, 12.6#, L -80 BT -M, .0152 bpf, D = 3.958' H 11418' DATE REV BY COMMENTS DATE REV BY COMENTS PR DHOEBAY UNIT 01/15/87 ORIGINAL COMPLETION 08/14/11 JJU PJC MLL C RUSH BTM (8/5111) WR..L: G-238 02123/96 CTD SDTRACK (G -23A) 08/14/11 II/ PJC GLV C/O (08/06/11) PERMT No: '2091440 08/20/10 D-141 SIDETRACK (G -23B) 11/16/12 DMS/JM) GLV C/O & SET INFDCBP (11 /12/12) API No: 50-029-21680-02 08/23/10 PJC DRLG HO CORRECTIONS SEC 12, T11 N, R13E, 2542' FSL & 1973' FE- 09/28/10 JGRIPJC FINAL DRLG CORRECTIONS 08/14/11 RLM PJC +07 PBiFS (811 /11) BP B ploratioa (Alaska) • • bp BP Exploration (Alaska) Inc. Attn: Well Integrity Coordinator, PRB -20 Post Office Box 196612 Anchorage, Alaska 99519 -6612 May 18, 2012 st AUG o 7 2012 Mr. Jim Regg Alaska OH and Gas Conservation Commission 0 9, 1 i-t 333 West 7 Avenue Anchorage, Alaska 99501 Subject: Corrosion Inhibitor Treatments of GPB G -Pad Dear Mr. Regg, Enclosed please find multiple copies of a spreadsheet with a list of wells from GPB Pad G that were treated with corrosion inhibitor in the surface casing by conductor annulus. The corrosion inhibitor is engineered to prevent water from entering the annular space and causing external corrosion that could result in a surface casing leak to atmosphere. The attached spreadsheet represents the well name, API and PTD numbers, top of cement depth prior to filling and volumes of corrosion inhibitor used in each conductor. As per previous agreement with the AOGCC, this letter and spreadsheet serve as notification that the treatments took place and meet the requirements of form 10 -404, Report of Sundry Operations. If you require any additional information, please contact me or my alternate, Gerald Murphy, at 659 -5102. Sincerely, o� , Mehreen Vazir BPXA, Well Integrity Coordinator • • BP Exploration (Alaska) Inc. Surface Casing by Conductor Annulus Cement, Corrosion inhibitor, Sealant Top -off Report of Sundry Operations (10-404) G -Pad Date: 03/05/2012 Corrosion Initial top of Vol. of cement Final top of Cement top off Corrosion inhibitor/ Well Name PTD # API # cement pumped cement date inhibitor sealant date ft bbls ft na qal G-01A 1931710 50029202140100 3.0 NA 3.0 NA 10.2 5/10/2010 G -02B 2081580 50029202170200 0.5 NA 0.5 NA 2.6 5/10/2010 G -03A 1970700 50029202210100 0.7 NA 0.7 NA 6.0 5/27/2010 G-04B 2061400 50029202250200 0.1 NA 0.1 NA 1.7 5/10/2010 G -05 1780970 50029203510000 0.0 NA 0.0 NA 0.0 5/10/2010 G-06A 2060120 50029203580100 0.6 NA 0.6 NA 5.1 5/12/2010 G -07 1790180 50029203590000 0.5 NA 0.5 NA 3.4 5/11/2010 G -08A 2061830 50029205810100 0.1 NA 0.1 NA 0.9 5/27/2010 G -098 2071100 50029205820200 9.0 NA 9.0 NA 69.7 5/20/2010 G -10C 2060090 50029205530300 0.9 NA 0.9 NA 8.5 3/5/2012 G -118 2080270 50029205830200 0.0 NA 0.0 NA 0.0 5/21/2010 G -12B 2031410 50029205970200 0.5 NA 0.5 NA 2.6 5/13/2010 G -13A 2001630 50029206000100 0.0 NA 0.0 NA Trace 5/12/2010 G -14B 2090680 50029206460200 0.7 NA 0.7 NA 5.1 5/22/2010 G -15B 2080650 50029206470200 26.0 4.0 0.5 7/16/2011 3.4 7/19/2011 G -16A 2090560 50029206430100 0.0 NA 0.0 NA Trace 5/22/2010 G -17A 2060760 50029206190100 21.4 _ 4.0 0.6 7/16/2011 3.4 7/19/2011 G -18A 1990320 50029206200100 71.7 14.0 1.0 7/16/2011 8.5 7/19/2011 G -198 2071240 50029215990200 0.0 NA 0.0 NA Trace 5/22/2010 G -21 1951540 50029226040000 0.5 NA 0.5 NA 3.4 5/12/2010 ......-+ -236 2091440 50029216800200 0.5 NA 0.5 NA 4.3 5/11/2010 G -24A 2060820 50029216710100 0.1 NA 0.1 NA 0.9 5/11/2010 G -25B 2070860 50029216520200 5.3 NA 5.3 NA 23.8 5/28/2010 G -26B 2050480 50029216610200 2.0 NA 2.0 NA 6.8 5/11/2010 G -27A 2070310 50029216460100 0.5 NA 0.5 NA 2.6 5/30/2010 G -298 2101410 50029216500200 2.8 NA 3.0 NA 17.0 5/13/2010 G -30C 2091510 50029216130300 1.0 NA 1.1 NA 5.1 5/30/2010 G -31B 2090310 50029216160200 0.8 NA 0.8 NA 6.0 5/21/2010 G -32A 1970010 50029216360100 0.8 NA 0.8 NA 3.4 5/21/2010 4 1• Y STATE OF ALASKA ALASKAWAND GAS CONSERVATION COMMISSI. REPORT OF SUNDRY WELL OPERATIONS 1. Operations Abandon ❑ Repair Well ❑ Plug Perforations ❑ Stimulate 151 Other 0 CEMENT SQUEEZE Performed: Alter Casing ❑ Pull Tubing ❑ Perforate New Pool ❑ Waiver❑ Time Extension ❑ 9530 -10480 Change Approved Program ❑ Operat. Shutdown ❑ Perforate ❑ Re -enter Suspended Well ❑ 2. Operator BP Exploration (Alaska), Inc. 4. Well Class Before Work: 5. Permit to Drill Number: Name: Development Ill Exploratory ❑ 209 -1440 3. Address: P.O. Box 196612 Stratigraphic❑ Service ❑ 6. API Number: Anchorage, AK 99519 -6612 . 50- 029 - 21680 -02 -00 8. Property Designation (Lease Number) : 9. Well Name and Number: ADLO- 028280 PBU G -23B 10. Field /Pool(s): PRUDHOE BAY FIELD / PRUDHOE OIL POOL 11. Present Well Condition Summary: Total Depth measured 11420 feet Plugs (measured) None feet true vertical 9031.67 feet Junk (measured) 11324 feet Effective Depth measured 11329 feet Packer (measured) 7875 8240 8356 feet true vertical 9029.64 feet (true vertical) 7857 8192 8294 feet Casing Length Size MD TVD Burst Collapse Structural Conductor 80' 20" 30 - 110 30 - 110 Surface 2666' 13 -3/8" 72# L -80 29 - 2695 29 - 2695 4930 2670 Production 8052' 9 -5/8" 47# L -80 28 - 8080 28 - ,8049 6870 4760 Liner 644' 7" 26# L -80 7875 - 8519 7571 - 8434 7240 5410 Liner 3062' 4 -1/2" 12.6# L -80 8356 - 11418 8294 - 9032 8430 7500 Liner Perforation depth: Measured depth: SEE ATTACHED - _ - True Vertical depth: _ _ Tubing: (size, grade, measured and true vertical depth) 4 -1/2" 12.6# 13CR85 26 - 8369 26 - 8305 Packers and SSSV (type, measured and true vertical depth) 7" Baker ZXP To Packer 7875 7857 4 -1/2" HES TNT Perm Packer 8240 8192 5" Baker ZXP Top Packer RCE' 8294 12. Stimulation or cement squeeze summary: �I , % 9 I Intervals treated (measured): fN Treatment descriptions including volumes used and final pressure: & G Com. fanditiOn Anch®rsge 13. Representative Daily Average Production or Injection Data Oil-Bbl Gas -Mcf Water -Bbl Casing Pressure Tubing pressure Prior to well operation: 2,711 53,501 54 1,234 Subsequent to operation: 14. Attachments: 15. Well Class after work: Copies of Logs and Surveys Run Exploratory Development El - Service ❑ Stratigraphic ❑ Daily Report of Well Operations X 16. Well Status after work: Oil — El Gas ❑ WDSPL ❑ GSTOR ❑ WINJ ❑ WAGE' 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 Nam- e Lastu , Title Petrotechnical Data Technologist Signatu 11111B . , Phone 564 -4091 Date 8/26/2011 WO $•3o•I( � Form 10 -404 Revised 10/2010 RBDMS AUG 2 9 20i� Of Submit Original Only G -23B 209 -144 • ! PERF ATTACHMENT Sw Name Operation Date Perf Operation Code Meas Depth Top Meas Depth Base Tvd Depth Top Tvd Depth Base G -23B 8/17/10 PER 10,200. 10,450. 9,031.98 9,028.76 G -23B 8/17/10 PER 10,700. 11,325. 9,029.93 9,029.59 G -23B 7/9/11 BPS 10,480. 11,325. 9,028.86 9,029.59 G -23B 7/31/11 SQZ 9,530. 10,480. 9,026.64 9,028.86 G -23B 8/4/11 BPP 10,480. 11,325. 9,028.86 9,029.59 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 • • G -23B DESCRIPTION OF WORK COMPLETED NRWO OPERATIONS EVENT SUMMARY r➢t as T i - ra 7/8/2011 Continued from 07/07/11 WSR. Scope: Acid, log, set composite, Organoseal. Perform weekly BOP test. Apply 1000 psi to IA w/ tri -plex. RIH w/ CC, pull test CC to 12k #. MU 2" cks, 2 -2" stingers, small to big pin XO, 2" JSN. (oaI= 11.98') tag fill @ 11316'.. discussed tag depth w/ APE.. determined ok. Perform SRT w/ NH4CL.. Pumped 85 bbls of 12% HCL and 75 bbls of 9:1 mud acid while recip from 10200_1Q 11312'. Followed acid w/ 293 bbls of NH4CL and displaced NH4CL into perfs w/ 1% KCL. POOH. MU & RIH w/ PDS 2 3/8" carrier w/ 3.7" drift. Continued on 07/09/11 WSR. 7/9/2011 Continued from 07/08/11 WSR. Scope: Acid, log, set composite, Organoseal. RIH w/ PDS carrier /3.7" drift. Hold Emergency Drills. Drift clear to 11214'. Had minor tags /tight spots from 11214' - 11259'. Log CCL/GR from 11259'- 9200'. Flag CT @ 10430'. MU /RIH w/ HAL composite bridge plug, stop and correct depth at flag. Set 3.66" HES composite plug (a7 10480. Freeze protect well w/ 75 bbls 50/50 meth down CTBS.. Pooh . RD. (Job terminated early due to issues with OrganoSEAL disposal). * *job incomplete** 7/30/2011 CTU #9 w/ 1.75" OD CT. Objective: squeeze, mill out. MIRU CT. MU and RIH w/ 2.1" OD BDJSN. Continued on WSR 07/31/11. 7/31/2011 CTU #9 w/ 1.75" OD CT. Objective: squeeze, mill out. Continued from WSR 07/30/11. Pump 80 bbls of organoseal & 20 bbls of 14# squeezecrete. Put all organoseal behind pipe. Lay -in 20 bbls squeezecrete cement w/ no losses. Build squeeze pressure against cement to a total of —1500 psi differential at the pert face putting a total of 15 bbls cement behind pipe. Reduce WHP, clean out w/ biozan to composite plug at 10480' md. Chase out to surface at 80% washing all jewelry, returns 1:1. Standby for cement to cure. Continued on WSR 08/01/11. 8/1/2011 CTU #9 w/ 1.75" OD CT. Objective: squeeze, mill out. Continued from WSR 07/31/11. Standby for cement to cure. Freeze protect wellbore to 2500' TVD w/ 50/50 methanol /water. Opt to move to another well while cement cures - plan to return at a later date to mill composite. RDMO. Job aborted. 8/2/2011 T /I /O =SSV /700/120, Temp =S /I, MIT -T FAILED to 1000 psi (Post Cement Squeeze) Pumped 1 bbls diesel to reach 1000 psi. MIT -T lost 240 psi in 1st 15 minutes and 80 psi in 2nd 15 minutes for a total of 320 psi in 30 minute test. Bled tubing psi. FW HP's= 400/700/120. • 8/4/2011 ' CTU # 9 w / 1.75" CT Objective: Mill Composite Bridge Plug Preform weekly BOP test. RIH w / 3.625" three bladed junk mill. Encounter cement stringers at 9538'CTM. Mill from 9530' to to • of HES composite bridge • lu • at 1 10,484'CTM. Mill HES composite bridge plug. Push CBP downhole, slow ROP ;through perfs at 10,700'. «< Job in progress »> 8/5/2011 CTU # 9 w / 1.75" CT Objective: Mill Composite Bridge Plug « <Cont from 8/4 I Push CBP downhole, slow ROP through perfs from 10,700' to 11,325'. Tag TD at 11,324'CTM. POOH. FP w/ 38 bbls 60/40. «< Job Complete »> FLUIDS PUMPED BBLS 1657 1 %KCL W/ SLICK 539 NH4CL 85 12% HCL ACID 75 9:1 MUD ACID 135 50/50 METH 15 FRESHWATER 196 1% KCL 103 DIESEL 200 1.5 PPB BIOZAN 80 ORGANOSEAL GEL 20 SQUEEZE CEMENT 14.9 PPG 38 60/40 METH 3143 TOTAL TREE -41' &1.- 4- 1/16" CtN 4 WELLHEAD = McEVOY -2 3 B 4 CHROME BELL ANGLE> 70° @ 9319' * ** al b ACTUATOR = BAKER C V KB. ELEV = 71.69' I BF. ELEV = 35.24' KOP = 7419' Max Angle = 93° @ 10784' ' ' I 2091' 1-14 -1/2" HES X NIP, ID = 3.813" 1 Datum MD = 9083' Datum TV D = 8800' SS 72L- 2600' H TOP OF CEMENT 1 120" CONDUCTOR, ID = ? H ? GAS LIFT MANDRELS ST MD TVD DEV TYPE V LV LATCH PORT DATE 13 -3/8" CSG, 72 #, —1 2695' 3 3697 3697 0 MMG DOME RK 16 08/06/11 L-80 / S-95 BUTT, ID = 12.347" X 2 5476 5476 1 MMG SO RK 20 08/06/11 9 -5/8" CSG, 47 #, L -80 NSCC H 4221' 1/ 1 6675 6675 0 MMG DMY RK 0 08/14/10 XO TO L -80 BUTT I 7875' I 9 -5/8" X 7" HRD ZXP LTP, BKR HMC LNR HGR ' i TOP OF 7" LNR H 7897' & TIEBACK SLEEVE, ID = 6.180" Minimum ID = 3.725" @ 8357' 4 -1/2" HES XN NIPPLE MILLOUT WINDOW (G -23b) 8063' - 8080' 9 -5 /8" BOT WHIPSTOCK (08/03/10) 1--j 8062' 9 -5/8" CSG, 47 #, L -80 BUTT, ID = 8.681" H 8063' °. J I t:" alitiZa. 9-5/8" EZXV (08/03/10) H 8099' - ' 8210' H4 -1/2" HES X NIP, ID = 3.813" 1 15 -1/2" TBG STUB (TAGGED 08/02/10) H 8232' I- 117".41 8240' H7" X 4 -1/2" HES TNT PKR, ID = 3.856" 1 II . k 8281' 1- 1 4 -1/2" HES X NIP, ID = 3.813" 1 8356' I- 7" X 5" BKR ZXP LNR TOP PKR / w / TIEBACK SLEEVE, ID = 4.44" 14 -1/2" TBG, 12.6 #, 13CR -85 VA TOP, .0152 bpf, ID = 3.958" I-I 8368' ® 8357' 1-14 -1/2" HES XN NIP, ID = 3.725" ` ( PERFORATION SUMMARY 8369' 1- 14 -1/2" WLEG, ID = 3.958" 1 REF LOG: WA 8373' I- 7" X 5" BKR ZXP FLEX LOCK ANGLE AT TOP PERF: 91" @ 10200' HANGER, ID = 4.40" Note: Refer to Production DB for historical perf data 8382' -I5" X 4-1/2" XO, ID = 3.958" SIZE SPF INTERVAL Opn /Sqz DATE 2 -7/8" 6 10200 - 10450 S 08/01/11 • 2 -7/8" 6 10700 - 11325 C 08/15/10 7" LNR, 26 #, L -80 VAM TOP HC, .0383 bpf, ID = 6.276" - I 8519' (BTM 3 JOINTS = L -80 BTC -M) . 4 -1/2" LNR, 12.64, L -80 IBT -M XO TO L -80 TCII H 9368' 11324' 1-1 FISH - MILLED CIBP (08105/11) 1 I4 -1/2" LNR, 12.64, L -80 TCII XO TO L -80 IBT -M I 11277' •* • PBTD PBTD —1 11329' I 1 4 -1/2" LNR, 12.64, L -80 IBT -M, .0152 bpf, ID = 3.958" I-I 11418' :'.'. DATE REV BY COMMENTS 1 DATE REV BY COMMENTS PRUDHOE BAY UNIT 01/15/87 ORIGINAL COMPLETION 02/08/11 GR/JMD FIXED TYPO IN PERF SUMMARY WELL: G -23B 02/23/96 CTD SDTRACK (G -23A) 07/29/11 RMH/PJC SET COMPOSITE BP (7/8 -9/11) PERMIT No: '2091440 08/20/10 0-141 SIDETRACK (G-23B) i 08/14/11 RLMJ PJC SQZ PERFS (8/1/11) API No: 50- 029 - 21680 -02 08/23/10 PJC DRLG HO CORRECTIONS I 08/14/11 JJL/ PJC MILL CIBP & PUSH BTM (8/5/11) SEC 12, T11 N, R13E, 2542' FSL & 1973' FEL 08/25/10 GJF /AGR GLV C/O (08/24/10) 08/14/11 JLJ/ PJC GLV CIO (08/06/11) 09/28/10 JGR/PJC FINAL DRLG CORRECTIONS BP Exploration (Alaska) • 04/28/11 ScMumberger NO. 5729 Alaska Data & Consulting Services Company: State of Alaska 2525 Gambell Street, Suite 400 Alaska Oil 8 Gas Cons Comm Anchorage, AK 99503 -2838 Attn: Christine Shartzer ATTN: Beth 333 West 7th Ave, Suite 100 Anchorage, AK 99501 Well Job # Log Description Date BL Color CD 15 -GSA BBKA -00096 PRODUCTION PROFILE ( 4. 13 ^ 0 03/14/11 1 .. 0`�(oj 1 17 -06 BBKA -00094 INJECTION PROFILE `) MO ( '� 03/10/11 1 '� " > 1 C -12B BAUJ -00064 MEM PRODUCTION PROFILE 6 03/08/11 1 a Q 1 G -23B BLPO.00079 MEM PRODUCTION PROFILE Q.. it� 03/09/11 1 l • J ; 16 -08A BJGT -00022 GLS I99— 1,9t, 03107/11 1 • 455, 1 02-18B BLPO -00087 MEM CBL : • ^— , , 03/25/11 _ . ' 'I _ . 1 1 J -22A BJGT -00023 CBL 4.Z4 — 03110/11 - 1 • L -210 BLPO -00086 MEM INJECTION PROFILE Qr. _ 03123111 1 5 Q ! 1 V -105 BLPO -00091 MEM INJECTION PROFILE _ 03/29/11 1 F liy; 1 V -220 _ BBSK -00065 INJECTION PROFILE/WFL j a9 • ♦ r - FFTa ttew 1 V -212 BD88 -00096 MEM INJECTION PROFILE 2 . de 04/03/11 _ 1 1 L -214A BCRJ -00073 INJECTION PROFILE ♦ -*Ai, • 03/18/11 1 �,• 1 V -223 BAUJ -00071 MEM INJECTION PROFILE • a't. W. G7. i 1 V -217 BAUD -00077 •• a a �7 l - :_rtSilr. I 3- 0510 -29 BG4H -00043 � ;r/�K t t e7' ; 1 1.47A1M -20 BLPO -00092 MEM PRODUCTION PROFILE i fr e 04/03/11 1 1 1- 25AJK -22 BBSK -00057 CBL 4 1' — (� 03/13/11 1 Pi S -01C BCUE -00113 MEM CBL Q __ t(C 03/17/11 �Q� 1 11 -30 B1388-00097 MEM INJECTION PROFILE 04118/11 1 _ 1 04 -11A AWJI.00134 IIJ91Xtli,LCILUti]2laR l dLrfITtE II L; 1 P2-41 BG4H -00044 PRODUCTION PROFILE I • — 5 03/22/11 1 1 D -26B BMSA -00009 SCMT _. ( —(,c}g i 03124111 AO 4 16 . 4 1 02 -18B BLPO -00087 MEM PRODUCTION PROFILE aex, v ,. 03/24111 1 144 1 Z -20 BP5G -00010 GLS I'' 03/29/11 1 a 64 - 1 Y -29A BCUE -00122 MEM LDL ' !a (n .- (^)4 ( 03/20/11 1 Oa' 1 • PLEASE ACKNOWLEDGE RECEIPT BY SIGNING AND RETURNING ONE COPY EACH TO: BP Exploration (Alaska) Inc. Alaska Data & Consulting Services Petrotechntcal Data Center LR2 -1 2525 Gambell Street, Suite 400 900 E. Benson Blvd, Anchorage, AK 99503 -2838 • • SEP29 STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSIONatiagliasswizemmilAon WELL COMPLETION OR RECOMPLETION REPORT AND Ldei 1 a. Well Status: 0 Oil ❑ Gas ❑ SPLUG ❑ Other ❑ Abandoned ❑ Suspended 1 b. Well Class: 2OAAC 25.105 20AAC 25.110 0 Development ❑ Exploratory ❑ GINJ ❑ WINJ ❑ WAG ❑ WDSPL ❑ Other No. of Completions One ❑ Service ❑ Stratigraphic 2. Operator Name: 5. Date Comp., Susp., or Aband.: 12. Permit to Drill Number: BP Exploration (Alaska) Inc. 8/20/2010 209 - 144 3. Address: 6. Date Spudded: 13. API Number: P.O. Box 196612, Anchorage, Alaska 99519 - 6612 8/4/2010 50 029 - 21680 - 02 - 00 4a. Location of Well (Governmental Section): 7. Date T.D. Reached: 14. Well Name and Number. Surface: 8/14/2010 PBU G -23B 2542' FSL, 1973' FEL, SEC. 12, T11N, R13E, UM 8. KB (ft above MSL): 62.66' 15. Field / Pool(s): Top of Productive Horizon: 1647' FSL, 1688' FEL, SEC. 12, T11N, R13E, UM GL (ft above MSL): 34.66' Prudhoe Bay Field / Prudhoe Bay Total Depth: 9. Plug Back Depth (MD +TVD): Oil Pool 1824' FSL, 3616' FEL, SEC. 12, T11N, R13E, UM 11329' 9030' 4b. Location of Well (State Base Plane Coordinates, NAD 27): 10. Total Depth (MD +TVD): 16. Property Designation: Surface: x - 658257 y 5968911 Zone ASP4 11420' 9032' ADL 028280 TPI: x- 658561 y- 5968023 Zone- ASP4 11. SSSV Depth (MD +TVD): 17. Land Use Permit: Total Depth: x- 656629 y 5968160 Zone ASP4 N/A 18. Directional Survey: 0 Yes ❑ No 19. Water depth, if offshore: 20. Thickness of Permafrost (TVD): (Submit electronic and printed information per 20 AAC 25.050) N/A ft MSL 1900' (Approx.) 21. Logs Obtained (List all logs here and submit electronic and printed information per 20 AAC 25.071): 22. Re- Drill/Lateral Top Window MD/TVD: Dir /GR/Res, Dir /GR /Res /Neu /Den 8063' 8033' 23. CASING, LINER AND CEMENTING RECORD SETTING DEPTH MD SETTING DEPTH TVD HOLE AMOUNT CASING WT. PER FT. GRADE ToP BOTTOM To BOTTOM SIZE CEMENTING RECORD PULLED 20" Surface 110' Surface 110' 9 cu vds concrete 13 -3/8" 72# L -80 Surface 2695' Surface 2695' 17 -1/2" 3723 cu ft . Class 'G' 9 -5/8" 47# L -80 Surface 8063' Surface, 8033' 12 -1/4" 575 cu. ft. Class 'G' 7" 26# L -80 7875' 8519' 7857' 8434' 8 -1/2" 191 cu ft Class 'G' 4 -1/2" 12.6# L -80 8356' 11418' 8294' 9032' 6-1/8" 438 cu ft Class 'G' 24. Open to production or injection? 0 Yes ❑ No 25. TUBING RECORD If Yes, list each interval open SIZE DEPTH SET (MD) PACKER SET (MD / TVD) (MD +TVD of Top & Bottom; Perforation Size and Number): 2 -7/8" gun diameter, 6 SPF 4 -1/2 ", 12.6#, 13Cr -85 8369' 8240' / 8192' MD TVD MD TVD 10200' - 10450' 9032' - 9029' 26. ACID, FRACTURE, CEMENT SQUEEZE, ETC. 10700' - 11325' 9030' - 9030' __ COMPLETION DEPTH INTERVAL (MD) AMOUNT AND KIND OF MATERIAL USED . 1, 2200' Freeze protected with 151 Bbls of Diesel I ,11 if 3.a 7: .orattaii 27. PRODUCTION TEST Date First Production: Method of Operation (Flowing, Gas Lift, etc.): September 3, 2010 Flowing Date of Test: Hours Tested: Production For OIL - BBL: GAS-MCF: WATER-BBL: CHOKE SIZE: GAS-OIL RATIO: 9/17/2010 6 Test Period ♦ 508 11620 6.25 65 22879 Flow Tubing Casing Press: Calculated OIL -BBL: GAS -MCF: WATER -BBL: OIL GRAVITY -API (CORR): Press. 750 1150 24 -Hour Rate ♦ 2032 46479 25 Not available 28. CORE DATA Conventional Core(s) Acquired? ❑ Yes ® No Sidewall Core(s) Acquired? ❑ Yes 0 No If Yes to either question, list formations and intervals cored (MD +TVD 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 per 20 AAC 250.071. None RBDMS SEP S 0 20' Form 10-407 Revised 12/2009 CONTINUED ON REVERSE . 71, / p•Z9. / 0 ubmit Qr,inal Only 6 29. GEOLOGIC MARKERS (List all formations and markers encountered): 30. FORMATION TESTS NAME MD TVD Well Tested? ❑ Yes ® No Permafrost Top If yes, list intervals and formations tested, briefly summarizing test Permafrost Base results. Attach separate sheets to this form, if needed, and submit detailed test information per 20 AAC 25.071. Top Sag River 8521' 8436' None Top Shublik 8563' 8472' Top Sadlerochit 8654' 8548' TCGL / Zone 3 8834' 8688' BCGL / Zone 2C 8957' 8777' 25N / Zone 2B (Upper Unit) 9038' 8833' 22N / Zone 2B (Lower Unit) 9162' 8911' 21N / TZ2A 9287' 8972' TZ1 B 9395' 9004' TN 14 9421' 9010' MHO / HOT 9825' 9029' Formation at Total Depth (Name): Sadlerochit Zone 1B 11420' 9032' 31. List of Attachments: Summary of Post -Rig Work and Daily Drilling Reports, Well Schematic Diagram, Leak Off Test Summary and Survey 32. 1 hereby certify that the foregoing is true and correct to the best of my knowledge Signed: Sondra ewma ` W7 � Title: Drilling Technologist Date: C ` l 0 PBU G - 23B 209 - 144 Prepared By Name/Number Elizabeth Barker, 564 -4628 Well Number Permit No. / Approval No. Drilling Engineer: John Rose, 564 -5271 INSTRUCTIONS General: This form is designed for submitting a complete and correct well completion report and log on all types of lands and leases in Alaska. 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. Item la: Classification of Service Wells: Gas Injection, Water Injection, Water - Alternating -Gas Injection, Salt Water Disposal, Water Supply for Injection, Observation, or Other. Multiple completion is defined as a well producing from more than one pool with production from each pool completely segregated. Each segregated pool is a completion. Item 4b: TPI (Top of Producing Interval). Item 8: The Kelly Bushing 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. Item 13: The API number reported to AOGCC must be 14 digits (ex: 50 -029- 20123- 00 -00). Item 20: Report true vertical thickness of permafrost in Box 20. Provide MD and TVD for the top and base of permafrost in Box 28. Item 23: Attached supplemental records for this well should show the details of any multiple stage cementing and the location of the cementing tool. Item 24: If this well is completed for separate production from more than one interval (multiple completion), so state in item 1, and in item 23 show the producing intervals for only the interval reported in item 26. (Submit a separate form for each additional interval to be separately produced, showing the data pertinent to such interval). Item 27: Method of Operation: Flowing, Gas Lift, Rod Pump, Hydraulic Pump, Submersible, Water Injection, Gas Injection, Shut -In, or Other (explain). Item 28: Provide a listing of intervals cored and the corresponding formations, and a brief description in this box. Submit detailed description and analytical laboratory information required by 20 AAC 25.071. Item 30: 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 12/2009 Submit Original Only • TREE = ' 41/16" OW • 'WELLHEAD = McEvoy SSH G -23 B SAFETY NOTES: WELL ANN F > 70" g 9319' *** ACTUATOR = BAKER C 4-1/2" CHROME TBG "** KB ELEV = 71 69 DRLG DRAFT r---4 BF. ELEV = 35 24' KOP = 7419' Max Angle = 93 @ 10784' Datum MD = 9083' I I 2091" H4-1/2" HES X NIP, ID = 3 813" I Datum - ND = 8800 SS I, 2600' H Cemented 1 1 13-3/8" CSG, 72#, L-80 BUTT H 2695' EL, ST MD TVD DEV TYPE VLV LATCH PORT DATE 3 3697 3697 0 MMG DCR-1 RKP - 08/14/10 2 5476 5476 1 KBG2 DMY BK 0 08/14/10 1 6675 6675 0 KBG2 DMY BK 0 08/14/10 Minimum ID = 3.725" @ 835T 7875' 1e 95/8" X7" HRD ZXP LTD, BKR HMC HGR 41I2 HES XN NIPPLE & TIEBACK SLEEVE ID - 6 180" 19-518" BOT WHIPSTOCK (08/03/10) H 8062' I I MILLOUT WINDOW (G-23B) 8063' - 8080' . ,i. I 9-5/8" CSG, 47# L-80, ID = 8 681" H o0o3 19-5/8" EZSV (08/03;10) H 8099' I ' • • 8210* H4-1 HES X NP ID = 3 813" I 15-1 /2 ' TBG STUB (08/02/10 TAGGED) H 8232' x —I 8240' H r - 7" X 4-1/2" HES TNT PKR, ID = 3 806 I -r -)..._ x .._,.- ._. • • J 8281' H4-1/2" HES X NIP, ID --- 3 813" I / 8356' 1.--. 7" X 5" BKR ZXP LNR TOP PKR, • HGR w /TIEBACK 41 15'X 5.25" 14-1/2" TBG 12 6# 13CR-85 VANITOP, 0152 bpf, ID = 3 958' I—I 8368' I , ' 1 8357' H4-1/2" HES XN NIP, ID = 3 72b" 8369' H4-1/2" WLEG, ID = 3.958" I 8382* H5" X 4-1/2" X0, ID = 3 958" I 17" LNR, 26#, L 80 VAM TOP HC, .0383 bpf, ID - 6.276 H 8519' I42' LNR, 12.611, L-80 IBT-NI X0 TO L-80 TCI 1 H 9368' I ■ PERFORATION SUMMARY X X ANGLE AT TOP PERE 91' IQ 10200' Note: Refer to Production DB for historical pert data SIZE SPF INTERVAL Opn/Sqz ' DATE 27/8 6 10200 0 08/18/10 2 7/8 6 10700 0 08/18/10 - . [4-1/2" LNR, 12.611, L-80 TC11 XO TO L-80 IBT-M H 11287' - - - v. • • PBTD —I 11329' I • • • ■••• • • • 14-112" LNR. 12611, L-80 IBT-M, 0152 bpf, ID = 3 958" H 11418' ■,•,•&• DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 01115/97 ORIGINAL COMPLETION WELL: 0-23E3 02/23/96 CTD SIDETRACK (G-23A) PERMIT No: F 2.091440 08/20/10 0-141 SIDETRACK (G-23B) API No 50-029-21680-02 08/23/10 NC DREG HO CORRECTIONS SEC 12, T11N, R13E, 2542' FSL & 1973' FEL BP Exploration (Alaska) North America - ALASKA - BP Page 1 of 1 Operation Summary Report Common Well Name: G -23 AFE No Event Type: MOBILIZATION (MOB) Start Date: 7/31/2010 End Date: 7/31/2010 X3- 00TWJ -C (564,964.00 ) Project: Prudhoe Bay Site: PB G Pad Rig Name /No.: DOYON 141 Spud Date/Time: 8/4/2010 12:00:00AM Rig Release: 8/20/2010 Rig Contractor: DOYON DRILLING INC. UWI: Active Datum: G -23B @62.66ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 7/31/2010 00:00 - 02:00 2.00 MOB P PRE PREPARE TO MOVE RIG COMPLEXES. PULL SERVICE AND ELECTRICAL LINES. JACK UP PIPE SHED, BOILER, AND ROCK WASHER COMPLEX. 02:00 - 04:00 2.00 MOB P PRE MOVE BOILER, MOTORS AND PUMPS COMPLEXES TO G -PAD. 04:00 - 06:00 2.00 MOB P PRE MOVE PIPE SHED COMPLEXES TO G -PAD. 06:00 - 08:00 2.00 MOB P PRE PULL SUB OFF OF C -28B. MOVE SUB AND ROCK WASHER COMPLEX TO G -PAD. 08:00 - 10:00 2.00 MOB P PRE SPOT SUB. HOLD AFTER ACTION REVIEW FOR MOVING COMPLEXES. 10:00 - 12:00 2.00 MOB P PRE SET RIG MATS AND SPOT PITS AND PUMP COMPLEXES. 12:00 - 12:45 0.75 MOB P PRE SPOT MOTORS AND BOILER COMPLEXES. 12:45 - 13:30 0.75 MOB P PRE SPOT ROCK WASHER AND LAY HERCULITE FOR CUTTINGS TANK. ' 13:30 - 14:30 1.00 MOB P PRE SPOT PIPE SHED. 14:30 - 15:00 0.50 MOB P PRE HOOK UP SERVICE LINES AND PIPE SKATE. ACCEPT RIG AT 15:00. 15:00 - 17:00 2.00 RIGU P PRE INSTALL SECONDARY ANNULUS VALVES ON OA AND IA. IA PRESSURE 0 PSI, OA PRESSURE 80 PSI. BLEED OA PRESSURE TO 0 PSI. INSTALL PUMP IN CAP ON TREE. 17:00 - 20:30 3.50 RIGU P PRE RIG UP LITTLE RED TO TEST BARRIERS. TEST OA TO 250 PSI THEN 2500 PSI FOR 10 MINUTES. TEST IA TO 250 PSI THEN 2500 PSI FOR 10 MINUTES. CHART ALL TESTS. SIMOPS: SPOT OPEN TOP TANK AND RIG UP HARDLINE TO CIRCULATE OUT DIESEL FREEZE PROTECT FROM WELL. Printed 9/20/2010 4:35:19PM • North America - ALASKA - BP Page 1 of 14 Operation Summary Report Common Well Name: G -23 AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 7/31/2010 End Date: 8/16/2010 X3- 00TWJ -C (2,583,916.00 ) Project: Prudhoe Bay Site: PB G Pad Rig Name /No.: DOYON 141 Spud Date/Time: 8/4/2010 12:00:00AM Rig Release: 8/20/2010 Rig Contractor: DOYON DRILLING INC. UWI: Active Datum: G -23B @62.66ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 7/31/2010 20:30 22:00 1.50 WHSUR P ■- DECOMP PICK UP LUBRICATOR AND LT. REMOVE BACK PRESSUESSURE E VALVE AND LAY DOWN LUBRICATOR. 22:00 - 00:00 2.00 WHSUR P DECOMP CIRCULATE OUT DIESEL FREEZE PROTECT FROM IA AND TUBING THROUGH TUBING CUT. PUMP 30 BBL CLEAN UP PILL FOLLOWED BY A SURFACE TO SURFACE VOLUME OF CLEAN SEAWATER - RECOVER 155 BBLS OF DIESEL 8/1/2010 00:00 - 02:00 2.00 WHSUR P DECOMP CIRCULATE OUT DIESEL FREEZE PROTECT FROM IA AND TUBING THROUGH TUBING CUT. PUMP 30 BBL CLEAN UP PILL FOLLOWED BY A SURFACE TO SURFACE VOLUME OF CLEAN SEAWATER - RECOVER 155 BBLS OF DIESEL 02:00 - 03:00 1.00 WHSUR P DECOMP RIG UP DRILL SITE MAINTENACE LUBRICATOR. TEST LUBRICATOR TO 250 PSI LOW, 3500 PSI HIGH. SET TWO WAY CHECK IN 5.5" TUBING HANGER. 03:00 - 04:30 1.50 WHSUR P DECOMP TEST TWO WAY CHECK FROM ABOVE TO 250 PSI THEN 3500 PSI FOR 5 MINUTES. TEST FROM BELOW TO 250 PSI THEN 1000 PSI FOR 5 MINUTES. CHART ALL TESTS. 04:30 - 05:00 0.50 WHSUR P ._ DECOMP BLOW DOWN LINES AND RIG DOWN TEST EQUIPMENT. 05:00 - 08:00 3.00 WHSUR P DECOMP NIPPLE DOWN TREE AND ADAPTER SPOOL. CHECK THREADS ON TUBING HANGER. CONFIRM MAKE UP TURNS WITH CROSS OVER. 08:00 13:00 5.00 BOPSUR P ■- DECOMP NIPPLE BOP AND 3' SPOOL. HELD ELD SPILL 2 MINUTES DRILL. CRT 2 MINUTES S 30 30 SECONDS 13:00 - 19:00 6.00 BOPSUR P DECOMP TEST BOPE WITH 4" AND 5 1/2" TEST JOINTS TO A LOW 250 PSI / HIGH 3500 PSI, EXCEPT FOR ANNULAR BAG. TEST ANNULAR BAG TO 2500 PSI. TEST LOWER 2 7/8" X 5" RAMS AS WELL. - EACH TEST CHARTED AND HELD FOR 5 MINUTES. TEST WITNESSED BY WSL DUNCAN FERGUSON AND TOOLPUSHER PAT KRUPA. - AOGCC REP JEFF JONES WAIVED WITNESS OF TEST 19:00 - 19:30 0.50 WHSUR P -_ DECOMP RIG UP LUBRICATOR EXTENSION (DUTCH 19:30 - 20:30 1.00 WHSUR P -_ DECOMP CUT AND SLIP 65' OF DRILLING LINE, 10 WRAPS. 20:30 - 23:00 2.50 WHSUR P DECOMP RIG UP DRILL SITE MAINTENACE LUBRICATOR. TEST LUBRICATOR TO 250 PSI LOW, 2500 PSI HIGH. PULL TWO WAY CHECK. RIG DOWN LUBRICATOR AND LUBRICATOR EXTENSION. Printed 9/20/2010 4:35:48PM • North America - ALASKA - BP • Page 2 of 14 Operation Summary Report Common Well Name: G -23 AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 7/31/2010 End Date: 8/16/2010 X3- 00TWJ -C (2,583,916.00 ) Project: Prudhoe Bay Site: PB G Pad Rig Name /No.: DOYON 141 Spud Date/Time: 8/4/2010 12:00:00AM Rig Release: 8/20/2010 Rig Contractor: DOYON DRILLING INC. UWI: Active Datum: G -23B @62.66ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 23:00 - 00:00 1.00 PULL P DECOMP RIG UP TO PULL TUBING HANGER TO FLOOR. MAKE UP 4" DRILL PIPE JOINT WITH TIW VALVE AND CROSS OVER TO TUBING HANGER THREADS. RIG UP CASING HANDLING EQUIPMENT AND CONTROL LINE SPOOLER TO LAY DOWN 5.5" TUBING. 8/2/2010 00:00 - 01:00 1.00 PULL P DECOMP PULL TUBING HANGER TO RIG Fl OOR.. TUBING HANGER BROKE FREE AT 130K. PICK UP WEIGHT 150K. 01:00 - 02:00 1.00 PULL P DECOMP CIRCULATE BOTTOMS UP FROM TUBING CUT. - 205 GPM, 100 PSI MONITOR WELL - STATIC. 02:00 - 12:30 10.50 PULL P DECOMP LAY DOWN LANDING JOINT. LAY DOWN TUBING HANGER. PULL 5.5" COMPLETION AND SPOOL CONTROL LINE. POH. LAY DOWN 201 JOINTS TUBING AND COMPLETION TOOLS. RECOVERED 26 RUBBER CLAMPS, 5 SS BANDS, 6 EACH GLM, SLIDING SLEEVE AND SSSV. CUT OFF JOINT 2.34'. CLEAN JET CUT. SOME INTERNAL PITTING ON THE TUBING SOME EXTERNAL CORROSION ON COLLARS WATER 8.5 PPG IN AND OUT. HELD AN UNANNOUNCED WELL CONTROL DRILL WITH THE DRILLER AND PITWATCHER. 12:30 - 13:30 1.00 PULL P -_ DECOMP HANDLING EQUIPMENT. OF TUBING HA 13:30 - 14:45 1.25 CLEAN P ■- DECOMP MOBILIZE CLEAN OUT BHA TO RIG IG FLOOR. R. RIG UP EQUIPMENT ENT TO TO PICK UP 8 1/2" CLEAN OUT BHA. 14:45 - 15:15 0.50 CLEAN P ._ DECOMP SERVICE RIG. LUBRICATE TOP DRIVE AND DRAWWORKS. 15:15 - 16:45 1.50 CLEAN P DECOMP MAKE UP CLEAN OUT BHA. - USED BIT, CASING SCRAPER, AND FULL GUAGE MILL - 9 JOINTS 6.5" DRILL COLLARS, 15 JOINTS 5" HWDP 16:45 - 00:00 7.25 CLEAN P DECOMP RUN IN THE HOLE ON 4" DRILL PIPE FROM 751' TO 8,232' MD. TAG TOP OF TUBING STUB AT 8,232. - PICK UP WEIGHT 175K, SLACK OFF WEIGHT 145K HELD AN UNANNOUNCED KICK WHILE TRIPPING DRILL WITH MORGAN'S CREW. 8/3/2010 00:00 - 01:00 1.00 CLEAN P DECOMP PULL UP ONE STAND ABOVE TUBING STUB. CIRCULATE HI-VIS SWEEP SURFACE TO SURFACE. RECIPROCATE PIPE IN 90' STROKES AFTER SWEEP AT BIT. - 550 GPM, 1400 PSI MONITOR WELL - STATIC. Printed 9/20/2010 4:35:48PM ill North America - ALASKA - BP Page 3 of 14 Operation Summary Report Common Well Name: G -23 AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 7/31/2010 End Date: 8/16/2010 X3- 00TWJ -C (2,583,916.00 ) Project: Prudhoe Bay Site: PB G Pad Rig Name /No.: DOYON 141 Spud Date/Time: 8/4/2010 12:00:00AM Rig Release: 8/20/2010 Rig Contractor: DOYON DRILLING INC. UWI: Active Datum: G -23B @62.66ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 01:00 - 05:30 4.50 CLEAN P DECOMP PULL OUT OF HOLE RACKING BACK STANDS OF 4" DRILL PIPE. STAND BACK 6.5" DRILL COLLARS AND 5" HWDP. PICK UP REMAINING DRILL 4" PIPE SINGLES AND RUN IN HOLE. RACK BACK IN STANDS. HELD SPILL DRILL, CREW RESPONSE TIME 120 SEC 05:30 - 06:00 0.50 CLEAN P DECOMP LAY DOWN CLEAN OUT RUN BHA. CLEAN AND CLEAR RIG FLOOR. 06:00 - 07:30 1.50 DHB P DECOMP RIG UP E -LINE EQUIPMENT. 07:30 - 10:00 2.50 DHB P DECOMP RUN IN HOLE WITH EZSV ON E -LINE WITH GR/CCL AND _ •- • : •••' ■• WIRELINE DEPTH. 10:00 - 11:30 1.50 DHB P DECOMP PULL OUT OF HOLE WITH E -LINE. 11:30 - 12:00 0.50 DHB P DECOMP RIG DOWN E -LINE. 12:00 - 13:00 1.00 DHB P DECOMP PERFORM 3500 PSI 9 5/8" CASING TEST FOR 30 CHARTED MINUTES WITH 8 BBLS OF 8.5 PPG SEAWATER. - 0 PSI LOST IN FIRST 15 MINUTES - 0 PSI LOST IN SECOND 15 MINUTES - TOTAL OF 0 PSI LOST IN 30 MINUTE TEST - BLED BACK 8 BBLS 13:00 - 14:15 1.25 STWHIP P DECOMP SINGLE IN HOLE WITH 24 JOINTS OF 4" DRILL PIPE. RACK BACK 8 STANDS OF DRILL PIPE. 14:15 - 15:15 1.00 STWHIP P DECOMP MOBILIZE WHIPSTOCK EQUIPMENT TO RIG FLOOR. CHANGE OUT HANDLING TOOLS TO 5 ". CALIBRATE BLOCK HEIGHT FROM MWD. 15:15 - 17:15 2.00 STWHIP P DECOMP MAKE UP WHIPSTOCK BHA AND MWD COMPONENTS AND RUN IN HOLE. ATTEMPT SHALLOW PRESSURE TEST AT 107'. TEST FAILED. SUSPECT AERATION IN SEAWATER. ANALYZE PUMPS AND FLUID SYSTEM WHILE RUNNING IN HOLE ON 5" HWDP. 17:15 - 19:15 2.00 STWHIP P DECOMP CHANGE OUT HANDLING TOOLS TO 4 ". RUN IN HOLE WITH WHIPSTOCK BHA ON 4" DP. SIM OPS: OFF LOAD AERATED SEAWATER AND TRANSFER RIG FRESH WATER TO PITS 19:15 - 21:15 2.00 STWHIP N FLUD 2,118.00 DECOMP ATTEMPT SHALLOW PRESSURE TEST. TEST GOOD. - 500 GPM, 900 PSI 21:15 - 00:00 2.75 STWHIP P DECOMP RUN IN HOLE WITH WHIPSTOCK BHA ON 4" DRILL PIPE STANDS. 8/4/2010 00:00 - 01:30 1.50 STWHIP P DECOMP RUN IN HOLE WITH WHIPSTOCK BHA ON 4" DRILL PIPE STANDS. Printed 9/20/2010 4:35:48PM North America - ALASKA - BP Page 4 of 14 Operation Summary Report Common Well Name: G -23 AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 7/31/2010 End Date: 8/16/2010 X3- OOTWJ -C (2,583,916.00 ) Project: Prudhoe Bay Site: PB G Pad Rig Name /No.: DOYON 141 Spud Date/Time: 8/4/2010 12:00:00AM Rig Release: 8/20/2010 Rig Contractor: DOYON DRILLING INC. UWI: Active Datum: G -23B @62.66ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 01:30 - 02:30 1.00 STWHIP P DECOMP ORIENT THE WHIPSTOCK TO 68 DEGREES LEFT OF HIGH SIDE. CONTINUE IN THE HOLE TO THE EZSV AT 8099'. TAG UP ON EZSV AT 8086' MD. SET DOWN 18K AND SEE INDICATION OF ANCHOR SET. PICK UP 10K OVER AND VERIFY ANCHOR IS SET. SLACK OFF 40K AND SEE INDICATION OF WHIPSTOCK SHEAR. PICK UP AND ROTATE AT 10 RPM WITH 5K TQ, VERIFY MILLS SHEARED OFF. MONITOR WELL - STATIC. 02:30 - 03:30 1.00 WHSUR P DECOMP PICK UP AND RACK BACK 2 STANDS OF 4" DRILL PIPE. MAKE UP STORM PACKER AND IN HOLE WITH STORM PACKER ON 2 JOINTS OF 4" DP. SET STORM PACKFR 66' RFl OW THE ROTARY TABLE. 03:30 - 04:00 0.50 WHSUR P ■- DECOMP N STORM PACKER. TEST 0 N FOR 5 MINUTES MINUTES THEN 1000 PSI FOR R MINUTES. MINUTES. CHART TESTS. 04:00 - 04:30 0.50 WHSUR P DECOMP PULL WEAR RING. 04:30 - 08:00 3.50 WHSUR P DECOMP ATTEMPT TO REMOVE 9 5/8" PACKOFF. BACK OUT LOCK DOWN SCREWS. ATTEMPT TO PULL PACK OFF WITH TUGGER LINE, PACKOFF WOULD NOT RELEASE. HOLD PJSM WITH WSL, CAMERON REP, AND RIG CREW. DECIDE TO USE BLOCKS TO REMOVE THE PACKOFF. PULL 20K WORKING UP TO 80K, PACKOFF WOULD NOT RELEASE. DECISION MADE TO NIPPLE DOWN BOP STACK AND CHANGE OUT TUBING SPOOL. 08:00 - 09:30 1.50 BOPSUR P DECOMP NIPPLE DOWN BOP STACK. 09:30 - 11:00 1.50 WHSUR P DECOMP NIPPLE DOWN TUBING SPOOL AND REMOVE. PACKOFF CAME WITH TUBING SPOOL. PACKOFF RECOVERED IN TWO PIECES. PACKOFF PARTED AT JUNK RING. 11:00 14:15 3.25 WHSUR P ■- DECOMP PREPARE EW TUBING S. NIPPLE UP TUBING ING SPOOL AND INSTALL ALL DOUBLE ANNULUS VALVES. 14:15 - 15:00 0.75 WHSUR P -_ DECOMP INSTALL 9 5/8" PACKOFF. TEST PACKOFF TO 5000 PSI FOR 30 MINUTES. CHART TEST. 15:00 - 16:00 1.00 BOPSUR P -_ DECOMP NIPPLE UP BOP STACK. HOOK UP CHOKE AND KILL LINES. INSTALL RISER. 16:00 - 16:30 0.50 BOPSUR P DECOMP RIG UP TO TEST BOPE. 16:30 - 18:15 1.75 BOPSUR P DECOMP BODY TEST CHOKE AND KILL LINES AND TUBING SPOOL BREAKS. TEST TO 250 PSI LOW FOR 5 MINUTES AND 3500 PSI HIGH FOR if n 5 MINUTES. CHART TESTS. 6 18:15 - 18:45 0.50 WHSUR P DECOMP INSTALL WEAR RING. 18:45 - 20:15 1.50 WHSUR P DECOMP PICK UP STORM PACKER RETRIEVAL TOOL. RUN IN HOLE AND RETREIVE STORM PACKER. LAY DOWN STORM PACKER AND RETRIEVAL TOOL. Printed 9/20/2010 4:35:48PM III North America - ALASKA BP Page 5 of 14 Operation Summary Report Common Well Name: G -23 AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 7/31/2010 End Date: 8/16/2010 X3- 00TWJ -C (2,583,916.00 ) Project: Prudhoe Bay Site: PB G Pad Rig Name /No.: DOYON 141 Spud Date/Time: 8/4/2010 12:00:00AM Rig Release: 8/20/2010 Rig Contractor: DOYON DRILLING INC. UWI: Active Datum: G -23B @62.66ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 20:15 - 22:15 2.00 STWHIP P DECOMP RUN IN HOLE TO TOP OF WHIPSTOCK. DISPLACE 8.5 PPG SEAWATER TO 10.5 PPG LSND MILLING FLUID. - 350 GPM, 1225 PSI RECORD SLOW PUMP RATES. MUD WEIGHT IN / OUT 10.5 PPG 22:15 - 00:00 1.75 STWHIP P WEXIT MILL WINDOW IN 9 5/8" CASING FROM 8063' 641"4:4 TO 8066'. - 400 GPM, 1550 PSI - WOB 2 -4K, 60 RPM - TQ ON 2 -10K, TQ OFF 1K - PU 167K, SO 165K, ROT 166K 8/5/2010 00:00 - 10:00 10.00 STWHIP P WEXIT MILL WINDOW IN 9 5/8" CASING FROM 8066' TO 8080'. DRILLED NEW FORMATION FROM 8080' TO 8,110'. TOW - 8063', BOW - 8080'. - 430 GPM, 1650 PSI - WOB 2 -4K, 110 RPM, TQ 7 -25K - PUW 174K, SOW 170K, 167K SMALL AMOUNTS OF CEMENT OBSERVED IN CUTTINGS RETURNS. PUMP 2 SUPER SWEEPS WITH NO INCREASE IN CUTTINGS EACH TIME. KICK WHILE DRILLING DRILL (D2), CREW RESPONSE TIME 68 SEC 10:00 - 11:30 1.50 STWHIP P WEXIT DRESSOFF WINDOW FROM 8063' TO 8110' AT MILLING PARAMETERS. PUMP SUPER SWEEP AT 500 GPM, 2150 PSI. NO INCREASE IN RETURNS OBSERVED. PULL THROUGH WINDOW WITH MILLS TWO TIMES FROM 8110' - 8063'. NO OVER PULL SEEN. - 240 LBS METAL SHAVINGS RECOVERED 11:30 - 12:00 0.50 STWHIP P WEXIT MONITOR WELL - STATIC. PULL OUT OF HOLE FROM 8110' TO 8053'. - PICK UP WEGHT 174K, SLACK OFF WEIGHT 170K 12:00 - 12:45 0.75 STWHIP P WEXIT PFRFORM FIT t 1� - 8063' / 8033' TVD, 10.5 PPG MW - 230 PSI SURFACE PRESSURE OBTAINED, 11.05 EMW ✓ - FIT CHARTED ON RECORDER, HELD FOR 10 MIN 12:45 - 13:30 0.75 STWHIP P WEXIT MONITOR WELL - STATIC. PUMP DRY JOB. BLOW DOWN TOP DRIVE. 13:30 - 16:00 2.50 STWHIP P WEXIT PULL OUT OF HOLE FROM 8053' TO BHA AT 836' WHILE RACKING BACK 4" DRILL PIPE STANDS. 16:00 - 16:15 0.25 STWHIP P WEXIT MONITOR WELL - STATIC. CHANGE OUT HANDLING TOOLS TO 5 ". 16:15 - 19:00 2.75 STWHIP P WEXIT RACK BACK 5" HWDP. LAY DOWN DRILL COLLARS, MWD, AND WINDOW MILLS. - TOP WINDOW MILL IN FULL GUAGE Printed 9/20/2010 4:35:48PM North America - ALASKA - BP 110 Page 6 of 14 Operation Summary Report Common Well Name: G -23 AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 7/31/2010 End Date: 8/16/2010 X3- 00TWJ -C (2,583,916.00 ) Project: Prudhoe Bay Site: PB G Pad Rig Name /No.: DOYON 141 Spud Date/Time: 8/4/2010 12:00:00AM Rig Release: 8/20/2010 Rig Contractor: DOYON DRILLING INC. UWI: Active Datum: G -23B @62.66ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 19:00 - 19:30 0.50 STWHIP P WEXIT CLEAN AND CLEAR RIG FLOOR. SEND EXCESS TOOLS DOWN BEAVER SLIDE. 19:30 - 21:00 1.50 WHIP P WEXIT PULL WEAR RING. PICK UP BOP STACK WASHER. FUNCTION BOP RAMS. FLUSH BOP STACK. INSTALL WEAR RING. 21:00 - 23:00 2.00 DRILL P WEXIT MAKE UP DRILLING BHA - TRI -CONE BIT, 1.5 DEG MOTOR - DIRECTIONAL, GAMMA RAY, RESISTIVITY 23:00 - 00:00 1.00 DRILL P WEXIT UPLOAD MWD TOOLS WITH DATA ACQUISTION PARAMETERS. 8/6/2010 00:00 - 01:00 1.00 DRILL P WEXIT RUN BHA IN HOLE ON 6.75" DRILL COLLARS AND 5" HWDP. 01:00 - 01:30 0.50 DRILL P WEXIT SHALLOW HOLE TEST MWD TOOLS. TEST - GOOD. - 450 GPM, 950 PSI 01:30 - 04:30 3.00 DRILL P WEXIT RUN IN HOLE WITH 8.5" DRILLING ASSEMBLY ON 4" DRILL PIPE TO 7,683'. HELD KICK DRILL WHILE TRIPPING (D1), CREW RESPONSE 80 SEC 04:30 - 07:00 2.50 DRILL P WEXIT FROM 7683' TO 7930' LOG AT 120 FT /HR IN REAL TIME TO TIE -IN TO MOTHERBORE. -430 GPM, 2000 PSI. 07:00 - 07:30 0.50 DRILL P WEXIT RUN IN HOLE TO 8059'. ORIENT BHA TO 70 DEGREES LEFT OF HIGHSIDE. SLIDE BHA ACROSS WHIP STOCK WITHOUT PUMPS OR ROTATION. - PUW 160K, SOW 157K 07:30 - 08:15 0.75 DRILL P WEXIT REAM UNDER GUAGE HOLE FROM 8088' TO 8110'. - 533 GPM, 2625 PSI 08:15 - 21:00 12.75 P INT1 QRILL AHEAD IN 8.5" HOLE SECTION FROM 8110' TO 8521'. V N� - 550 -575 GPM, 2750 -3050 PSI '� - 80 RPM, TQ ON 3K, TQ OFF 2K - PUW 163K, SO 159K, ROT 161K - ADT 9.25, AST - 5.73, ART - 3.52 CIRCULATE AT 8265' - 8245' DUE TO SLIGHT PACK OFF. 21:00 - 22:00 1.00 DRILL P INT1 CIRCULATE BOTTOMS UP FOR SAMPLES. - 600 GPM, 3200 PSI -100 RPM, TQ2K GLAUCONITE OBSERVED IN SAMPLES. CALL TD AT 8521'. HELD SPILL DRILL, CREW RESPONSE TIME 170 SEC 22:00 - 23:00 1.00 DRILL P INT1 CIRCULATE ADDITIONAL BOTTOMS UP. - 600 GPM, 3200 PSI 23:00 - 00:00 1.00 DRILL P INT1 MONITOR WELL - STATIC. PUMP OUT OF HOLE TO WINDOW AT 80 GPM, 300 PSI. - PUW 164K 8/7/2010 00:00 - 01:00 1.00 DRILL P INT1 RUN IN HOLE TO 8430' ON ELEVATORS. WASH DOWN TO TD AT 8521'. NO FILL FOUND ON BOTTOM. Printed 9/20/2010 4:35:48PM • North America - ALASKA - BP Page 7 of 14 Operation Summary Report Common Well Name: G -23 AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 7/31/2010 End Date: 8/16/2010 X3- 00TWJ -C (2,583,916.00 ) Project: Prudhoe Bay Site: PB G Pad Rig Name /No.: DOYON 141 Spud Date/Time: 8/4/2010 12:00:00AM Rig Release: 8/20/2010 Rig Contractor: DOYON DRILLING INC. UWI: Active Datum: G -23B @62.66ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 01:00 - 02:30 1.50 DRILL P INT1 PUMP HI-VIS SWEEP. AFTER RETURN OF SWEEP CONTINUTE TO CIRCULATE UNTIL SHAKERS CLEAN UP. CIRCULATE A TOTAL OF 2 BOTTOMS UP. - 600 GPM, 3200 PSI SPLINTERY SHALE CUTTINGS COMING ACROSS SHAKERS 85 BBLS PRIOR TO BOTTOMS UP. ON SECOND BOTTOMS UP, HOLE CLEAN. MONITOR WELL - STATIC. 02:30 - 03:45 1.25 DRILL P INT1 PULL OUT OF HOLE TO WINDOW ON ELEVATORS. NO DRAG OR OVER PULL NOTED. - PUW 165K MONITOR WELL - STATIC. 03:45 - 07:30 3.75 DRILL P INT1 PUMP DRY JOB. PULL OUT OF HOLE ON 4" DRILL PIPE TO 5" HWDP AT 632'. 07:30 - 09:15 1.75 DRILL P INT1 LAY DOWN 15 JOINTS OF 5" HWDP, 6 JOINTS OF DRILL COLLARS, AND JARS. 09:15 - 09:45 0.50 DRILL P INT1 DOWNLOAD MWD TOOLS OF RECORDED LOGGING DATA. 09:45 - 11:00 1.25 DRILL P INT1 LAY DOWN MWD TOOLS, MUD MOTOR AND BIT. - BIT GRADING: 11:00 - 11:30 0.50 DRILL P INT1 CLEAN AND CLEAR RIG FLOOR. MONITOR WELL - STATIC. 11:30 - 12:00 0.50 DRILL P INT1 RIG UP TO CHANGE OUT TOP RAMS FROM 3.5" X 6" VARIABLES TO 7" CASING RAMS. 12:00 - 15:30 3.50 BOPSUR P INT1 CHANGE OUT TOP RAMS TO 7" CASING RAMS. PULL WEAR RING. INSTALL TEST PLUG. TEST 7" RAMS WITH 7" TEST JOINT TO A LOW 250 PSI / HIGH 3500 PSI. - EACH TEST CHARTED AND HELD FOR 5 MINUTES. - RE- INSTALL WEAR RING AFTER TESTS 15:30 - 16:30 1.00 CASING P INT1 RIG UP TO RUN 7" LINER PREPARE TORQUE TURN EQUIPMENT. CHANGE OUT ELEVATORS TO 7" SIDE DOOR ELEVATORS 16:30 - 17:00 0.50 CASING P INT1 PICK UP AND RIH WITH 7" SHOE TRACK. - BAKER LOK ALL BTC THREAD CONNECTIONS - FILLED PIPE TESTED FLOATS. TEST- GOOD. 17:00 - 18:15 1.25 CASING P INT1 RIH PICKING UP 7" 26# L -80 VAM TOP HC CASING FROM PIPE SHED 1 X 1. - TORQUE TURNED ALL CONNECTIONS. - JET LUBE SEAL GUARD THREAD COMPOUND ON ALL CONNECTIONS - CENTRALIZERS ON SHOE TRACK AND ONE PLACED ABOVE AND BELOW THE WINDOW - 15 TOTAL JTS OF 7" LINER RAN Printed 9/20/2010 4:35:48PM North America - ALASKA - BP Page 8 of 14 Operation Summary Report Common Well Name: G -23 AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 7/31/2010 End Date: 8/16/2010 X3- 00TWJ -C (2,583,916.00 ) Project: Prudhoe Bay Site: PB G Pad Rig Name /No.: DOYON 141 Spud Date/Time: 8/4/2010 12:00:00AM Rig Release: 8/20/2010 Rig Contractor: DOYON DRILLING INC. UWI: Active Datum: G -23B @62.66ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 18:15 - 18:45 0.50 CASING P INT1 P/U BAKER 7" X 9 -5/8" "HMC" LINER HANGER AND "HRD" ZXP LINER TOP PACKER ASSEMBLY WITH RUNNING TOOL. - VERIFY CORRECT NUMBER OF SHEAR PINS INSTALLED IN HANGER AND PACKER - MIX UP PACKER GEL AND PLACE IN RUNNING TOOL 18:45 - 19:15 0.50 CASING P INT1 RIG DOWN 7" LINER RUNNING EQUIPMENT. EXPEDITE TORQUE TURN EQUIPMENT FROM RIG FLOOR. CHANGE ELEVATORS TO 4 ". SIMOPS: CIRCULATE LINER VOLUME. 125 GPM, 60 PSI 19:15 - 00:00 4.75 CASING P INT1 RUN IN HOLE TO 9 5/8" WINDOW ON 4" DRILL PIPE. FILL PIPE AND BREAK CIRCULATION EVERY 10 STANDS. CIRCULATE 1.5 LINER VOLUMES AT WINDOW. 168 GPM, 450 PSI 8/8/2010 00:00 - 01:30 1.50 CASING P INT1 CIRCULATE 1.5 LINER VOLUMES AT WINDOW. - 168 GPM, 450 PSI - PUW 146K, SO 144K 01:30 - 03:00 1.50 CASING P INT1 RUN IN HOLE ON 4" DP TO 8,450'. FILL PIPE AND BREAK CIRCULATION EVERY 10 STANDS. 03:00 - 03:30 0.50 CEMT P INT1 PICK UP A 4" DRILL PIPE SINGLE AND CEMENT HEAD. MAKE UP TO STRING. RUN IN HOLE TO TD AND TAG BOTTOM. PICK UP AND SPACE OUT AT 8,518'. - PUW 150K , SO 147K 03:30 - 05:30 2.00 CEMT P INT1 STAGE PUMPS UP TO 5 BPM, 700 PSI. CIRCULATE BOTTOMS UP. SIM OPS: HOLD PJSM FOR CEMENT JOB. Printed 9/20/2010 4:35:48PM • North America - ALASKA - BP Page 9 of 14 Operation Summary Report Common Well Name: G -23 AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 7/31/2010 End Date: 8/16/2010 X3- 00TWJ -C (2,583,916.00 ) Project: Prudhoe Bay Site: PB G Pad Rig Name /No.: DOYON 141 Spud Date/Time: 8/4/2010 12:00:00AM Rig Release: 8/20/2010 Rig Contractor: DOYON DRILLING INC. UWI: Active Datum: G -23B @62.66ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) Z 05:30 - 06:30 1.00 CEMT P INT1 CEMENT 7" LINER IN PLACE AS FOLLOWS: '( - BATCH MIX 12.0 PPG MUD PUSH L� - BATCH MIX 15.8 PPG CLASS G CEMENT yf - PUMP 5 BBLS OF 12.0 PPG MUD PUSH AND PT LINES TO 4800 PSI. - PUMP 25 BBLS OF 12.0 PPG MUD PUSH AT 5 BPM WITH 556 PSI. - PUMP 34 BBLS OF 15.8 PPG CLASS G CEMENT AT 5.0 BPM WITH 462 PSI ICP AND 223 PSI FCP. - KICK OUT DART WITH 5 BBLS OF WATER. - DISPLACE WITH THE RIG AT 14 BPM WITH 168 PSI TO CATCH THE CEMENT. - ONCE CEMENT IS CAUGHT SLOW PUMPS TO 5 BPM WITH 450 PSI. - OBSERVE DART LATCH UP - BUMP PLUG AT 100 BBLS DISPLACED AND PRESSURE UP TO 3000 PSI. - SLACK OFF 50K TO SET THE HANGER. - BLEED PRESSURE OFF, CHECK FLOATS, FLOATS HELD. CFMFNT INFO - 34 BBLS (160 SX) OF 15.8 PPG CLASS G CEMENT 116A 3 - MIX WATER RATIO 5.104 GAUSK - YIELD 1.16 CU. FT /SK - CIP 06:27 LINER INFO: - TOP OF LINER TOP PACKER AT 7875' - LANDING COLLAR AT 8399' - FLOAT COLLAR AT 8480' - FLOAT SHOE AT 8517' 06:30 - 07:00 0.50 CEMT P INT1 PRESSURE UP TO 4700 PSI, SHEAR SETTING TOOL. BLEED OFF PRESSURE PICK UP 6' AND ROTATE AT 20 RPM. SLACK OFF AND SET DOWN 70K, SET LINER TOP PACKER. PICK UP AND SLACK OFF AGAIN WHILE ROTATING TO CONFIRM PACKER SET. PRESSURE UP TO 1000 PSI. PICK UP OUT OF THE LINER TOP PACKER ASSEMBLY. OBSERVE PRESSURE BLEED OFF TO CONFIRM TOOL OUT OF LINER TOP PACKER. 07:00 - 08:30 1.50 CEMT P INT1 CIRCULATE THREE BOTTOMS UP. - 600 GPM, 3000 PSI TRACE OF CEMENT OBSERVED IN RETURNS. 08:30 - 09:30 1.00 CEMT P INT1 RIG DOWN CEMENTING HEAD AND LAY DOWN A 4" DRILL PIPE SINGLE. 09:30 - 10:30 1.00 CEMT P INT1 SLIP AND CUT 52' OF DRILLING LINE. - PUW 135K, SOW 136K 10:30 - 12:00 1.50 CEMT P INT1 MONITOR WELL- STATIC. PUMP DRY JOB. PULL OUT OF HOLE TO 4652' 12:00 - 12:30 0.50 CEMT P INT1 SERVICE IRON ROUGH NECK AND DRAWWORKS. 12:30 - 14:00 1.50 CEMT P INT1 PULL OUT OF HOLE TO LINER RUNNING TOOL. LAY DOWN SAME. Printed 9/20/2010 4:35:48PM II I North America - ALASKA - BP Page 10 of 14 Operation Summary Report Common Well Name: G -23 AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 7/31/2010 End Date: 8/16/2010 X3- 00TWJ -C (2,583,916.00 ) Project: Prudhoe Bay Site: PB G Pad Rig Name /No.: DOYON 141 Spud Date/Time: 8/4/2010 12:00:00AM Rig Release: 8/20/2010 Rig Contractor: DOYON DRILLING INC. UWI: Active Datum: G -23B @62.66ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 14:00 - 14:45 0.75 CEMT P INT1 CLEAN AND CLEAR RIG FLOOR. PULL WEAR RING. INSTALL TEST PLUG. 14:45 - 17:00 2.25 BOPSUR P INT1 CHANGE OUT UPPER RAMS TO 3.5" X 6" _ VARIABLES. RIG UP TO TEST BOPE. 17:00 - 00:00 7.00 BOPSUR P INT1 TEST BOPE WITH 2 7/8" AND 4 1/2" TEST JOINTS TO A LOW 250 PSI / HIGH 3500 PSI, EXCEPT FOR ANNULAR BAG. TEST ANNULAR BAG TO 2500 PSI. - EACH TEST CHARTED AND HELD FOR 5 BOP MINUTES. TEST WITNESSED BY WSL JOSH MALLERY AND TOOLPUSHER JOHN PIPER. - AOGCC REP LOU GRIMALDI WAIVED WITNESS OF TEST 8/9/2010 00:00 - 00:45 0.75 BOPSUR P INT1 RIG DOWN FROM BOP TEST. SET WEAR BUSHING. 00:45 - 01:45 1.00 CASING P INT1 PERFORM 3500 PSI 9 5/8" X 7" CASING TEST FOR 30 CHARTED MINUTES WITH 7 BBLS OF 10.5 PPG LSND MUD. - 0 PSI LOST IN FIRST 15 MINUTES - 0 PSI LOST IN SECOND 15 MINUTES - TOTAL OF 0 PSI LOST IN 30 MINUTE TEST - BLED BACK 7 BBLS 01:45 - 02:45 1.00 DRILL P INT1 HOLD PJSM ON PICKING UP BHA. PICK UP BIT AND 1.83 DEG. MUD MOTOR. MAKE UP SAME. 02:45 - 04:30 1.75 DRILL N DFAL INT1 UNABLE TO GET AT BIT INCLINATION TOOL TO ACTIVATE. TROUBLE SHOOT TOOL. 04:30 - 06:15 1.75 DRILL P INT1 UPLOAD MWD TOOL. SURFACE TEST MWD TOOL TO CONFIRM WHETHER AT BIT INCLINATION TOOL IS OPERATIONAL. 06:15 - 07:15 1.00 DRILL P INT1 PICK UP 4" HWDP AND FLEX DRILL COLLARS. 07:15 - 10:30 3.25 DRILL P INT1 SINGLE IN HOLE WITH BHA ON 4" DP SINGLES TO 3575'. HELD KICK DRILL WHILE TRIPPING (D1), CREW RESPONSE TIME 120 SEC 10:30 - 13:30 3.00 DRILL P INT1 RUN IN HOLE ON 4" DRILL PIPE STANDS FROM DERRICK TO 8395'. - PUW 150K, SOW 143K - FILL PIPE EVERY 20 STANDS TAG LINER LAP AT 7890' 13:30 - 17:15 3.75 DRILL P INT1 WASH DOWN TO 8440'. DRILL LANDING COLLAR AND CEMENT TO 10' FROM SHOE AT 8508'. - 230 GPM, 1525 PSI - 20 RPM, 1K TO HELD UNANNOUNCED KICK WHILE DRILLING DRILL (D2) , CREW RESPONSE TIME 60 SEC Printed 9/20/2010 4:35:48PM - P Page 11 of 14 ilk North America - ALASKA B Operation Summary Report Common Well Name: G -23 AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 7/31/2010 End Date: 8/16/2010 X3- 00TWJ -C (2,583,916.00 ) Project: Prudhoe Bay Site: PB G Pad Rig Name /No.: DOYON 141 Spud Date/Time: 8/4/2010 12:00:00AM Rig Release: 8/20/2010 Rig Contractor: DOYON DRILLING INC. UWI: Active Datum: G -23B @62.66ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 17:15 - 19:30 2.25 DRILL P INT1 CIRCULATE HALF OF A BOTTOMS UP. - 250 GPM, 1700 PSI DROP BALL, OPEN MULTI -CYCLE CIRC SUB. PUMP SWEEP AND DISPLACE TO 8.8 PPG FLO -PRO SF MUD. DROP BALL, CLOSE MULTI -CYCLE CIRC SUB. - 515 GPM, 1800 PSI OBTAIN SLOW PUMP RATES. SIM OPS: CLEAN UNDER SHAKERS AND TROUGH AND DISPLACEMENT. 19:30 - 20:00 0.50 DRILL P INT1 DRILL REMAINING 10' OF SHOE TRACK AND NEW FORMATION TO 8541'. - 250 GPM, 1500 PSI - 20 RPM, 1K TQ 20:00 - 21:45 1.75 DRILL P INT1 CIRCULATE UNTIL MUD WEIGHT BALANCED AT 8.8 PPG IN/OUT RIG UP TO PERFORM FIT. 21:45 - 22:15 0.50 DRILL P PROD1 PERFORM FIT TO 9.1 PPG EMW. PRESSURE UP TO 150 PSI. SHUT IN AND CHART PRESSURE FOR 10 MINUTES. 0 PSI PRESSURE LOST IN 10 MINUTES. - MW IN /OUT 8.8 PPG - TVD OF 8,434' 22:15 - 00:00 1.75 DRILL P PROD1 DRILL AHEAD IN 6.125" HOLE SECTION FROM, 8541' TO 8565'. - 250 GPM, 1606 PSI - 20 RPM, TO2KON,1KOFF - PUW 156K, ROT 156K, SOW 151K - ART 1.26, AST .38, ADT - 1.64 8/10/2010 00:00 - 12:00 12.00 DRILL P PROD1 DRILL AHEAD IN 6.125" HOLE SECTION FROM 8565' TO 8885'. - 250 GPM, 1600 PSI - 20 RPM, TQ 2K ON , 1K OFF - PUW 160K, ROT 155K, SOW 152K - ART 9.25, AST 4.16, ADT 5.09 - MUD WT IN AND OUT 8.8 PPG - HELD KICK WHILE DRILLING DRILL AT 8:45 WITH CRT OF 90 SEC. 12:00 - 00:00 12.00 DRILL P PROD1 DRILL AHEAD IN 6.125" HOLE SECTION FROM 8885' TO 9278'. - 275 GPM, 1900 PSI ON / 1800 PSI OFF - 20 RPM, TQ 3K ON , 2K OFF - PUW 166K, ROT 160K, SOW 152K - ART 2.91, AST 5.41, ADT 8.32 - MUD WT IN AND OUT 8.8 PPG - HELD TABLE TOP MAN DOWN DRILL AT 22:00 8/11/2010 00:00 - 12:00 12.00 DRILL P PROD1 DRILL AHEAD IN 6.125" HOLE SECTION FROM 9278' to 9553'. - 270 GPM, 1800 PSI ON / 1720 PSI OFF - 20 RPM, TQ 4K ON , 3K OFF - PUW 170K, ROT 160K, SOW 151K - ART 2.34, AST 6.77, ADT 9.11 - MUD WT IN AND OUT 8.8 PPG - HELD SPILL AT 07:00, CRT 120 SEC. Printed 9/20/2010 4:35:48PM North America - ALASKA - BP IP Page 12 of 14 Operation Summary Report Common Well Name: G -23 AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 7/31/2010 End Date: 8/16/2010 X3- 00TWJ -C (2,583,916.00 ) Project: Prudhoe Bay Site: PB G Pad Rig Name /No.: DOYON 141 Spud Date/Time: 8/4/2010 12:00:00AM Rig Release: 8/20/2010 Rig Contractor: DOYON DRILLING INC. UWI: Active Datum: G -23B @62.66ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12:00 - 23:00 11.00 DRILL P PROD1 DRILL AHEAD IN 6.125" HOLE SECTION FROM 9553' to 9947'. - 270 GPM, 1800 PSI ON / 1720 PSI OFF - 20 RPM, TQ 4K ON , 3K OFF - PUW 171K, ROT 156K, SOW 145K - ART 2.81, AST 4.72, ADT 7.53 - MUD WT IN AND OUT 8.8 PPG 23:00 - 00:00 1.00 DRILL P PROD1 PUMP HI-VIS SWEEP AT 275 GPM WITH 1750 PSI, ROTATE AT 20 RPM AND RECIPROCATE FULL STAND. 2.5K TQ. 8/12/2010 00:00 - 01:15 1.25 DRILL P PROD1 CIRCULATE HI-VIS SWEEP SURFACE TO SURFACE AT 275 GPM WTIH 1800 PSI. ROTATING AT 20 RPM WHILE RECIPROCATING ENTIRE STAND. 10 -15% INCREASE IN CUTTINGS OVER THE SHAKERS WITH HI-VIS SWEEP. 01:15 - 02:45 1.50 DRILL P PROD1 MONITOR THE WELL. STATIC. PULL OUT OF THE HOLE ON ELEVATORS. SAW A FEW SPOTS OF 25K OVERPULL, WORKED AND CLEANED UP THE TIGHT SPOTS. HOLE TAKING PROPER HOLE FILL. - UP WT. 166K / DOWN WT. 145K - MUD WT. IN AND OUT 8.8 PPG 02:45 - 04:15 1.50 DRILL P PROD1 DROP BALL AND OPEN THE CCV AT 2200 PSI. CIRCULATE BOTTOMS UP AT 550 GPM WITH 1300 PSI. SAW MINOR RETURNS TO SURFACE FROM BOTTOMS UP. 04:15 - 07:30 3.25 DRILL P PROD1 MONITOR WELL. STATIC. PUMP DRY JOB AND PULL OUT OF THE HOLE TO 377' ON ELEVATORS RACKING BACK 4" DRILL PIPE. 07:30 - 10:30 3.00 DRILL P PROD1 LAYDOWN 2 JTS. OF HWDP WITH JARS, RACK BACK 1 STAND OF HWDP AND NON MAG FLEX DRILL COLLARS, LAYDOWN THE CCV. DOWNLOAD THE MWD AND BREAK OUT THE BIT. LAYDOWN THE TM, MAKE -UP NEW TM AND RACK BACK. 10:30 - 12:00 1.50 DRILL P PROD1 PICK UP NEW 5" MOTOR AND MAKE UP TO NEW 6.125" BIT. SCRIBE THE MOTOR TO THE MWD. UPLOAD THE MWD. 12:00 - 12:30 0.50 DRILL P PROD1 SHALLOW TEST THE MWD, LOAD THE RADIOACTIVE SOURCES. 12:30 - 13:45 1.25 DRILL P PROD1 CONTINUE TO MAKE UP THE NEW DRILLING BHA. CONSISTS OF THE FOLLOWING: - 6.125" HCD505Z PDC BIT - 5" SPERRY DRILL LOBE 6/7 - 6.0 STG MOTOR WITH 1.5 DEGREE BEND - NON -MAG FLOAT SUB - NON -MAG INTEGRAL BLADE - NON -MAG 4.75" DM COLLAR - NON -MAG 4.75" SLIM PHASE 4 COLLAR - NON -MAG 4.75" ALD /CTN COLLAR - NON -MAG 4.75" TM HOC - (3) NON -MAG FLEX COLLARS - COMMANDER SUB - X -OVER SUB - (3) 4" X 2.5625" HWDP - BUMPER SUB - 4" X 2.5625" HWDP - HYDRAULIC DRILLING JAR - 4" X 2.5625" HWDP Printed 9/20/2010 4:35:48PM North America - ALASKA - BP Page 13 of 14 Operation Summary Report Common Well Name: G -23 AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 7/31/2010 End Date: 8/16/2010 X3- 00TWJ -C (2,583,916.00 ) Project: Prudhoe Bay Site: PB G Pad Rig Name /No.: DOYON 141 Spud Date/Time: 8/4/2010 12:00:00AM Rig Release: 8/20/2010 Rig Contractor: DOYON DRILLING INC. UWI: Active Datum: G -23B @62.66ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 13:45 - 17:45 4.00 DRILL P PROD1 RUN IN THE HOLE FILLING THE PIPE EVERY 20 STANDS. TOOK 20K AT 9173' AND 9549'. 17:45 - 19:00 1.25 DRILL P PROD1 TAKE CHECK SHOTS AT 9460' AND 9553'. 19:00 - 19:30 0.50 DRILL P PROD1 RUN IN THE HOLE FROM 9553' TO 9947'. - UP WT. 164K / DOWN WT. 147K 19:30 - 21:00 1.50 DRILL P PROD1 CIRCULATE BOTTOMS UP AT 250 GPM WITH 1550 PSI AT 20 RPM WITH 3K TQ. -HELD UNANNOUNCED KICK WHILE TRIPPING DRILL, CRT 45 SEC 21:00 - 00:00 3.00 DRILL P PROD1 MADD PASS FROM 9947' TO 9330' AT 360 FT /HR MAX. 250 GPM WITH 1450 PSI, 30 RPM AND 2K TQ 8/13/2010 00:00 - 03:00 3.00 DRILL P PROD1 MADD PASS FROM 9330' TO 8600' BIT DEPTH AT 360 FT /HR MAX. 250 GPM WITH 1450 PSI, 30 RPM AND 2K TQ 03:00 - 04:00 1.00 DRILL P PROD1 RUN BACK IN THE HOLE FROM 8600' TO 9947'. 04:00 - 12:00 8.00 DRILL P PROD1 DRILL AHEAD IN 6.125" HOLE SECTION FROM 9947' to 10267'. - 290 GPM, 1850 PSI ON / 1750 PSI OFF - TQ 3K ON/OFF, WOB 5K - PUW 166K, ROT 155K, SOW 145K - ART 2.05, AST 1.91, ADT 3.96 - MUD WT IN AND OUT 8.8 PPG 12:00 - 20:30 8.50 DRILL P PROD1 DRILL AHEAD IN 6.125" HOLE SECTION FROM 10267' to 10758'. - 290 GPM, 1850 PSI ON / 1750 PSI OFF - 100 RPM TQ 4K ON / 3KOFF, WOB 5 -25K - PUW 172K, ROT 157K, SOW 145K - ART 2.11, AST 1.29, ADT 3.40 - MUD WT IN AND OUT 8.8 PPG HAD ISSUES GETTING WEIGHT TO THE BIT WHILE SLIDING, SO DECISION WAS MADE TO PUMP SWEEPS TO CLEAN THE HOLE UNANNOUNCED KICK DRILL WITH AAR HELD BY ALAN MADSEN AND RICHARD BORDES. CRT 70 SEC. 20:30 - 22:00 1.50 DRILL P PROD1 PUMP 25 BBL NUT PLUG SWEEP FOLLOWED BY A 25 BBL HI-VIS SWEEP AT 296 GPM WITH 1950 PSI. SAW MINOR RETURNS FROM NUT PLUG, SIGNIFICANT RETURNS OF CUTTING WITH THE HI-VIS SWEEP. 22:00 - 00:00 2.00 DRILL P PROD1 DRILL AHEAD IN 6.125" HOLE SECTION FROM 10758' to 10830'. - 290 GPM, 1850 PSI ON / 1750 PSI OFF - 100 RPM TQ 4K ON / 3KOFF, WOB 5 -25K - PUW 172K, ROT 157K, SOW 145K - ART .24, AST .30, ADT .54 - MUD WT IN AND OUT 8.8 PPG 8/14/2010 00:00 - 10:15 10.25 DRILL P PROD1 DRILL AHEAD IN 6.125" HOLE SECTION FROM 10830' TO 11179'. - 290 GPM, 1850 PSI ON / 1750 PSI OFF - TQ 3K ON/OFF, WOB 5K, 100 RPM - PUW 171K, ROT 158K, SOW 143K - ART 3.67, AST 2.46, ADT 6.13 - MUD WT IN AND OUT 8.8 PPG -HELD KICK WILL DRILLING DRILL, CRT 60 SEC. Printed 9/20/2010 4:35:48PM North America - ALASKA - BP Page 14 of 14 Operation Summary Report Common Well Name: G -23 AFE No Event Type: RE- ENTER- ONSHORE (RON) Start Date: 7/31/2010 End Date: 8/16/2010 X3- 00TWJ -C (2,583,916.00 ) Project: Prudhoe Bay Site: PB G Pad Rig Name /No.: DOYON 141 Spud Date/Time: 8/4/2010 12:00:00AM Rig Release: 8/20/2010 Rig Contractor: DOYON DRILLING INC. UWI: Active Datum: G -23B @62.66ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 10:15 - 12:00 1.75 DRILL P PROD1 PUMP A 30 BBL NUT PLUG SWEEP FOLLOWED BY A 30 BBL HI-VIS SWEEP AT 290 GPM WITH 1850 PSI AND 100 RPM. SAW AN INCREASE IN RETURNS OF 10 %. 12:00 - 15:45 3.75 DRILL P PROD1 DRILL AHEAD IN 6.125" HOLE SECTION FROM 11179' TO 11420'. , - 290 GPM, 1850 PSI ON / 1750 PSI OFF - TO 3K ON/OFF, WOB 5K, 100 RPM - PUW 175K, ROT 160K, SOW 145K - ART 1.76, AST .34, ADT 2.60 - MUD WT IN AND OUT 8.8 PPG 15:45 - 18:30 2.75 DRILL P PROD1 CIRCULATE 2 BOTTOMS UP AT 100 RPM WITH 3K TQ AT 300 GPM WITH 2000 PSI. ROTATE AND RECIPROCATE THROUGHOUT THE ENTIRE CIRCULATION. SAW SMALL INCREASE IN RETURNS. - HELD SPILL DRILL, CRT 132 SEC 18:30 - 00:00 5.50 EVAL P PROD1 MADD PASS FROM 11420' TO 10720' AT 180 FT /HR PUMPING AT 300 GPM WITH 1900 PSI. 100 RPM WITH 3K TQ. 8/15/2010 00:00 - 03:30 3.50 EVAL P PROD1 MADD PASS FROM 10720' TO 10200' AT 180 FT /HR PUMPING AT 300 GPM WITH 1900 PSI. 100 RPM WITH 3K TQ. 03:30 - 10:00 6.50 EVAL P PROD1 MADD PASS FROM 10200' TO 9400' AT 180 FT /HR PUMPING AT 300 GPM WITH 1900 PSI. 30 RPM WITH 3K TQ. PACKING OFF FROM 9437' TO 9415'. 10:00 - 12:00 2.00 DRILL P PROD1 PUMP OUT OF THE HOLE FROM 9400' TO 8520' AT 2 BPM WITH 500 PSI. 12:00 - 13:15 1.25 DRILL P PROD1 DROP BALL TO OPEN CCV AT 2500 PSI AND CIRCULATE 2 BOTTOMS UP AT 600 GPM WITH 1500 PSI. RECIPROCATE DURING CIRCULATION. MONITOR WELL. STATIC. 13:15 - 13:45 0.50 DRILL P PROD1 DROP BALL AND PRESSURED UP TO 2300 PSI TO CLOSE CCV. 13:45 - 14:45 1.00 DRILL P PROD1 RUN IN THE HOLE FROM 8520' TO 11420'. 14:45 - 17:00 2.25 DRILL P PROD1 CIRCULATE BOTTOMS UP AT 290 GPM WITH 1720 PSI ROTATING AT 100 RPM. SPOT LINER RUNNING PILL. MONITOR WELL, STATIC. MUD WT. IN AND OUT 8.8 PPG. 17:00 - 19:45 2.75 DRILL P PROD1 PULL OUT OF THE HOLE ON ELEVATORS FROM 11420' TO 8482'. 19:45 - 21:00 1.25 DRILL P PROD1 DROP BALL TO OPEN CCV AT 2000 PSI AND CIRCULATE BOTTOMS UP AT 600 GPM WITH 1500 PSI. RECIPROCATE DURING CIRCULATION. MONITOR WELL. STATIC. PUMP DRY JOB AND DROP RABBIT, PREPARE TO PULL OUT OF THE HOLE. 21:00 - 23:30 2.50 DRILL P PROD1 PULL OUT OF THE HOLE ON ELEVATORS FROM 8482' TO 398'. 23:30 - 00:00 0.50 DRILL P PROD1 MONITOR WELL AT BHA, STATIC. 8/16/2010 00:00 - 03:00 3.00 DRILL P PROD1 LAY DOWN BHA. 6.125" BIT WAS IN GAUGE. Printed 9/20/2010 4:35:48PM North America - ALASKA - BP Page 1 of 6 Operation Summary Report Common Well Name: G -23 AFE No Event Type: COM- ONSHORE (CON) Start Date: 8/16/2010 End Date: 8/20/2010 X3- 00TWJ -C (1,036,425.00 ) Project: Prudhoe Bay Site: PB G Pad Rig Name /No.: DOYON 141 Spud Date/Time: 8/4/2010 12:00:00AM Rig Release: 8/20/2010 Rig Contractor: DOYON DRILLING INC. UWI: Active Datum: G -23B @62.66ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 8/16/2010 03:00 - 03:30 0.50 CASING P RUNPRD CLEAN AND CLEAR THE RIG FLOOR OF ALL TOOLS NOT BEING USED IN LINER RUN. 03:30 - 04:45 1.25 CASING P RUNPRD MOBILIZE CASING EQUIPMENT TO THE RIG FLOOR AND CHANGE OUT TO LONG BAILS. 04:45 - 06:30 1.75 CASING P RUNPRD RIG UP DOUBLE STACK TONGS WITH COMPENSATOR AND PREPARE TO RUN THE 4.5" PRODUCTION LINER. 06:30 - 10:15 3.75 CASING P RUNPRD MAKE UP AND RUN THE 4.5" PRODUCTION_ LINER AS FOLLOWS: - 4.5" HES FLOAT SHOE - 1 JTS 4.5 ",12.6 #, L- 80, IBT -M SOLID LINER ( #1) - 4.5" HALLIBURTON FLOAT COLLAR - 1 JTS 4.5 ",12.6 #, L- 80, IBT -M SOLID LINER ( #2) - 4.5" BAKER LANDING COLLAR - 1 JTS 4.5 ",12.6 #, L- 80, IBT -M SOLID LINER ( #3) - 4.5 ",12.6 #, L- 80, TC-II BOX X BTC PIN X -O PUP JT - 45 JTS 4.5" 12.6# L -80 TC-II LINER (#4 -48) - 4.5 ",12.6 #, L- 80, TC -II PIN X IBT BOX X -O PUP JT - UTILIZE JET LUBE SEAL GUARD ON ALL TC-II CONNECTIONS. 10:15 - 10:45 0.50 CASING P RUNPRD CHANGE OUT BAILS AND RIG DOWN COMPENSATOR. 10:45 - 12:15 1.50 CASING P RUNPRD CONTINUE MAKING UP THE 4.5" PRODUCTION LINER AS FOLLOWS: - 24 JTS 4.5" 12.6# L -80 IBT LINER ( #49 -72) - 4.5" 12.6# L -8- IBT LINER PUP JT - 5" BTC -M BOX X 4.5" IBT PIN XO BUSHING - UTILIZE BEST OF LIFE 2000 ON ALL IBT CONNECTIONS. - TOTAL OF 135 CENTRALIZERS ON THE PIPE. OMD HYDROFOAM CENTRALIZER PLACEMENT AS FOLLOWS: - ONE CENTRALIZER LOCKED DOWN MID JOINT OF JOINT #1, #2, #3. - TWO CENTRALIZERS WITH STOP COLLAR IN MID JOINT ON EACH JOINT FROM #4 - #66 , #70 - #72, NO CENTRALIZERS #67- #69. ALL CENTRALIZERS TORQUED TO 30 IN/LBS. 12:15 - 13:00 0.75 CASING P RUNPRD PICK UP AND MAKE UP THE ZXP LINER TOP PACKER. 13:00 - 13:15 0.25 CASING P RUNPRD PICKUP DRILL PIPE SINGLE AND PUP JOINT. 13:15 - 13:45 0.50 CASING P RUNPRD CIRCULATE A LINER VOLUME AT 1.5 BPM WITH 180 PSI. UP WT. 140K / DOWN WT. 140K. 2.5 BPM @ 325 PSI, 3.5 BPM @ 375 PSI, 4.5 BPM @ 425 PSI, 5 BPM @ 500 PSI. 13:45 - 16:45 3.00 CASING P RUNPRD RUN IN THE HOLE ON 4" DRILL PIPE FROM 3069' TO 8517'. FILLING EVERY 10 STANDS. 16:45 - 17:30 0.75 CASING P RUNPRD CIRCULATE 1.5 DRILL PIPE AND LINER VOLUME AT 5 BPM WITH 480 PSI. 17:30 - 20:00 2.50 CASING P RUNPRD RUN IN THE HOLE FROM 8517' TO 11390' FILLING EVERY 10 STANDS. UP WT. 165K / DOWN WT. 148K Printed 9/20/2010 4:36:08PM 1 110 Pa North America - ALASKA - BP e 2 of 6 g Operation Summary Report Common Well Name: G -23 AFE No Event Type: COM- ONSHORE (CON) Start Date: 8/16/2010 End Date: 8/20/2010 X3- 00TWJ -C (1,036,425.00 ) Project: Prudhoe Bay Site: PB G Pad Rig Name /No.: DOYON 141 Spud Date/Time: 8/4/2010 12:00:00AM Rig Release: 8/20/2010 Rig Contractor: DOYON DRILLING INC. UWI: Active Datum: G -23B @62.66ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 20:00 - 20:15 0.25 CASING P RUNPRD MAKE UP SINGLE AND CEMENT HEAD. WASH DOWN FROM 11390' TO 11420' AT 1.5 BPM WITH 325 PSI. TAGGED ON DEPTH AT 11420', PICKED UP 2' TO 11418'. 20:15 - 23:00 2.75 CEMT P RUNPRD CIRCULATE AND RECIPROCATE FROM 11418' TO 11400' STAGING THE PUMPS UP TO 5 BPM WITH 900 PSI. UP WT. 154K / DOWN WT. 145K 23:00 - 00:00 1.00 CEMT P RUNPRD PUMP 5 BBLS OF 12 PPG MUD PUSH AND PRESSURE TEST THE LINES 4800 PSI. PUMP 25 MORE BBLS OF 12 PPG MUD @ 5 BPM WITH 680 PSI. pl1MP 78 BBLS (414 SKS) OF, 15.8 PPG CEMENT (YIELD 1.17 CUBIC FT. SK). RECIPROCATE THE STRING THROUGHOUT THE OPERATIONS. UP WT. 165K / DOWN WT. 155K 8/17/2010 00:00 - 01:00 1.00 CEMT P RUNPRD DISPLACE THE CEMENT AT 9 BPM WITH 320 PSI TO CATCH THE PLUG. CATCH THE PLUG AT 54 BBLS DISPLACED AND SLOWED THE PUMPS TO 5 BPM WITH 715 PSI. SLOWED TO 3 BPM WITH 445 PSI AT 75 BBLS DISPLACED. SAW PLUG LATCH AT 85 BBLS DISPLACED r M , AND PRESSURED UP TO 2100 PSI. V_. CONTINUED DISPLACEMENT AT 3 BPM WITH 1300 PSI. SLOWED PUMPS TO 2 BPM WITH 1190 PSI AT 118 BBLS DISPLACED. BUMPED PLUG AT 1524 STKS (129 BBLS) DISPLACED. WALKED THE PRESSURE UP TO 3200 PSI. SLACKED OFF TO 90K TO SET THE HANGER. BLED OFF PRESSURE TO CHECK THE FLOATS. FLOATS HELD. PRESSURE UP TO 4500 PSI TO RELEASE THE RUNNING TOOL. BLEED PRESSURE DOWN TO 3500 PSI PICK UP 6' TO EXPOSE THE DOG SUB, SET DOWN TO 90K TO SET THE PACKER. BLEED OFF THE PRESSURE. PICK UP 6' BEGIN ROTATING AT 20 RPM AND SET DOWN TO 90K AGAIN TO VERIFY PACKER IS SET. RIG DOWN CEMENT LINE AND PLACE ON 1502 BULL PLUG. PRESSURE UP TO 1000 PSI THROUGH THE TOP DRIVE AND PICK UP TO SEE PRESSURE BLEED OFF TO VERIFY RUNNING TOOL IS CLEAR OF LINER TOP. LINER TOP AT 8356.41' AND LINER SHOE AT 11418'. 01:00 - 02:15 1.25 CEMT P RUNPRD CIRCULATE BOTTOMS UP AT 9 BPM WITH 1000 PSI. 14 BBLS OF CEMENT BACK TO SURFAC:F 02:15 - 04:00 1.75 CLEAN P CLEAN DISPLACE WELL TO 8.5 PPG SEAWATER AT 12 BPM WITH 1500 PSI. 04:00 - 05:00 1.00 CLEAN P CLEAN CLEAN OUT UNDER THE SHAKERS, CLEAN AND CLEAR THE FLOOR AND PREPARE TO LAY DOWN DRILL PIPE. 05:00 - 10:00 5.00 CLEAN P CLEAN PULL OUT OF THE HOLE LAYING DOWN THE FIRST 31 STANDS OF DRILLPIPE, THEN RACKING BACK THE REST. 10:00 - 10:45 0.75 CLEAN P CLEAN MONITOR THE WELL AND FLUSH OUT THE STACK TO CLEAN ANY CEMENT RESIDUE OUT. 10:45 - 12:00 1.25 PERFOB P OTHCMP MOBILIZE 2 -7/8" HANDLING EQUIPMENT TO THE RIG FLOOR AND RIG UP FOR PERF. RUN. Printed 9/20/2010 4:36:08PM No rth America - ALASKA - BP Page 3 of 6 Operation Summary Report Common Well Name: G -23 AFE No Event Type: COM- ONSHORE (CON) Start Date: 8/16/2010 End Date: 8/20/2010 X3- 00TWJ -C (1,036,425.00 ) Project: Prudhoe Bay Site: PB G Pad Rig Name /No.: DOYON 141 Spud Date/Time: 8/4/2010 12:00:00AM Rig Release: 8/20/2010 Rig Contractor: DOYON DRILLING INC. UWI: Active Datum: G -23B @62.66ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 12:00 - 13:00 1.00 PERFOB P OTHCMP SLIP AND CUT 78' OF DRILLING LINE. 13:00 - 13:30 0.50 PERFOB P OTHCMP SERVICE TOP DRIVE AND DRAW WORKS. 13:30 - 15:00 1.50 PERFOB P ._ OTHCMP PICK UP AND MAKE UP THE 2 -7/8" P RFORATING GUNS. 15:00 - 16:45 1.75 PERFOB P OTHCMP MAKE UP 60 JOINTS OF 2 -7/8" FOX PIPE. 16:45 19:45 3.00 PERFOB P ■- OTHCMP RUN IN THE HOLA 4" DRILL PIPE O 11326'. PICK UP AND D GUNS GUNS S ON DEPTH DEPTH OF 11325'. UP WT. 155K / DOWN WT. 150K 19:45 - 21:30 1.75 EVAL P OTHCMP PRESSURE TEST CASING TO 3500 PSI FOR 30 MINUTES. 10 PSI LOST IN FIRST 15 MINUTE INTERVAL AND 5 PSI LOST IN SECOND 15 MINUTE INTERVAL. 21:30 - 22:00 0.50 PERFOB P ■- OTHCMP THE PERFORATING GUNS DEPTH AT 1132 11325'. FELT POSITIVE INDICATION ON THE RIG FLOOR OF THE GUNS FIRING. 22:00 - 22:45 0.75 PERFOB P OTHCMP PULL OUT OF THE HOLE FROM 11325' TO 10185' RACKING BACK THE DRILL PIPE. WELL TOOK 9 BBL OF FLUID OVER CALCULATED DISPLACEMENT. 22:45 - 23:15 0.50 PERFOB P -_ OTHCMP MONITOR THE WELL FOR 30 MINUTES. TOOK 2 BBLS. 23:15 - 00:00 0.75 PERFOB P OTHCMP ATTEMPTED TO PUMP THE SLUG, STRING PACKED OFF AFTER 40 STROKES PUMPED. PULL OUT OF THE HOLE LAYING DOWN THE 4" DRILL PIPE. 8/18/2010 00:00 - 07:15 7.25 PERFOB P -_ OTHCMP PULL OUT OF THE HOLE LAYING DOWN 223 JOINTS OF 4" DRILL PIPE. 07:15 - 10:00 2.75 PERFOB P ._ OTHCMP RIG UP DOUBLE STACK TONGS AND LAYDOWN 60 JOINTS OF 2 -7/8" FOX PIPE. 10:00 - 11:00 1.00 PERFOB P OTHCMP MONITOR WELL, OBSERVED THE WELL PERCULATING AND FLUID SLOWLY FALLING IN THE WELL BORE. CONTINUED TO OBSERVE WELL AND HAVE PJSM ABOUT LAYING DOWN PERF GUNS WITH SCHLUMBERGER. 11:00 12:00 1.00 PERFOB P ■- OTHCMP PICK UP CASING TONGS AND EQUIPMENT EQUIPMENT FOR LAYING DOWN THE PERF. GUNS. 12:00 - 13:15 1.25 PERFOB P OTHCMP BREAK OUT AND LAY DOWN THE FIRING HEAD AND DISCONNECT WITH 2 -7/8" FOX BOX END. - DISCONNECT HEAD WAS PLUGGED WITH A PIECE OF ALUMINUM AND 2 SMALL ROCKS THAT PREVENTED CIRCULATION THROUGH IT. - HELD A KICK DRILL WITH GUNS IN THE ROTARY TABLE, CRT 540SEC. 13:15 - 15:15 2.00 PERFOB P -_ OTHCMP FINISH LAYING DOWN THE PERFORATING GUNS. 15:15 - 15:45 0.50 RUNCOM P RUNCMP CLEAN AND CLEAR THE RIG FLOOR. 15:45 16:45 1.00 RUNCOM P ■- RUNCMP RUN IN THE HOLE WITH THE U STANDS AND IN THE DERRICK AND D PULL ULL OUT OF OF THE HOLE LAYING THEM DOWN. 16:45 17:30 0.75 RUNCOM P ■- RUNCMP RIG TO AND COMPENSATOR. CLEAR FLOOR FLOOR R OF ALL UN-NEEDED TOOLS AND PREPARE TO RUN 4.5" COMPLETION. Printed 9/20/2010 4:36:08PM North America - ALASKA - BP Page 4 of 6 o ca Operation Summary Report Common Well Name: G -23 AFE No Event Type: COM- ONSHORE (CON) Start Date: 8/16/2010 End Date: 8/20/2010 X3- 00TWJ -C (1,036,425.00 ) Project: Prudhoe Bay Site: PB G Pad Rig Name /No.: DOYON 141 Spud Date/Time: 8/4/2010 12:00:00AM Rig Release: 8/20/2010 Rig Contractor: DOYON DRILLING INC. UWI: Active Datum: G -23B @62.66ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 17:30 - 00:00 6.50 RUNCOM P RUNCMP RUN THE 4.5 ", 12.6 #, 13- CR -80, COMPLETION AS FOLLOWS: - 4.5" WLEG TC -II BOX 4.95" OD 13CR - 4.5 ", 12.6 #, 13 CR -80 TC-II PUP JOINT - 4.5" HES 'XN' NIPPLE 9 CR W/ RHC -M PLUG (NO SHEAR) 3.725" NO -GO -4.5 ", 12.6#, 13 CR VAM TOP BOXXTC II PIN XO PUP - 4.5 ", 12.6 #, 13 CR -80 VAM TOP BOX TO PIN PUP JOINT - 1 JT 4.5" 12.6# 13 CR -80 VAM TOP TBG W /BAKERLOCKED COUPLING ( #1) - 4.5 ", 12.6 #, 13 CR -80 TC-II BOX TO VAM TOP PIN XO PUP - 4.5 "'X' NIPPLE 9CR 3.813" ID PKG BORE TC-II - 4.5 ", 12.6 #, 13 CR -80 TC -II PIN X BOX PUP - 4.5 ", 12.6 #, 13 CR VAM TOP BOX TOTC II PIN XO PUP - 4.5 ", 12.6 #, 13 CR -80 VAM TOP BOX X PIN PUP - 7" 26# X 4.5" 12.6# 13CR HES TNT PACKER VAM TOP BOX X PIN PUP - 4.5 ", 12.6 #, 13 CR -80 VAM TOP BOX X PIN PUP - 4.5 ", 12.6 #, 13 CR -80 TC -II BOX TO VAM TOP PIN XO PUP - 4.5" 'X' NIPPLE: 9 CR 3.813" ID PKG BORE TC-II - 4.5 ", 12.6 #, 13 CR VAM TOP BOX TOTC II PIN XO PUP - 4.5 ", 12.6 #, 13 CR -80 VAM TOP BOX X PIN - 36 JTS 4.5 ", 12.6 #, 13 CR -80 VAM TOP TUBING ( #2 -37) - 4.5 ", 12.6 #, 13 CR -80 TC-II BOX X VAM TOP PIN XO PUP - #1 GLM 4.5" X 1" 12.6# 9CR KBG -2 DUMMY WITH BK LATCH - 4.5 ", 12.6 #, 13 CR -80 VAM TOP BOX X TC -II PIN XO PUP - 28JTS 4.5 ", 12.6 #, 13 CR -80 VAM TOP TUBING ( #38 -65) - 4.5 ", 12.6 #, 13 CR -80 TC-II BOX TO VAM TOP PIN XO PUP - #2 GLM 4.5" X 1" 12.6# 9CR KBG-2 DUMMY WITH BK LATCH - 4.5 ", 12.6 #, 13 CR -80 VAM TOP BOX TO TC-II PIN XO PUP - 20 JTS 4.5 ", 12.6 #, 13 CR -80 VAM TOP TUBING ( #66 -85) - JET LUBE SEAL GUARD WAS USED ON ALL CONNECTIONS EXCEPT FOR ALL CONNECTIONS BELOW THE PACKER WHICH WERE BAKERLOK'D. - ALL CONNECTIONS TORQUED TO 4440 FT /LBS. -HELD A H2S RIG EVACUATION DRILL, CRT 198 SEC. Printed 9/20/2010 4:36:08PM North America - ALASKA - BP ' Page 5 of 6 Operation Summary Report Common Well Name: G -23 AFE No Event Type: COM- ONSHORE (CON) Start Date: 8/16/2010 End Date: 8/20/2010 X3- 00TWJ -C (1,036,425.00 ) Project: Prudhoe Bay Site: PB G Pad Rig Name /No.: DOYON 141 Spud Date/Time: 8/4/2010 12:00:00AM Rig Release: 8/20/2010 Rig Contractor: DOYON DRILLING INC. UWI: Active Datum: G -23B @62.66ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 8/19/2010 00:00 - 10:00 10.00 RUNCOM P RUNCMP CONTINUE RUNNING IN THE HOLE WITH THE 4.5" COMPLETION AS FOLLOWS: - 22 JTS 4.5 ", 12.6 #, 13 CR -80 VAM TOP TUBING ( #86 -107) - 4.5 ", 12.6 #, 13 CR -80 TC-II BOX TO VAM TOP PIN XO PUP - #3 GLM 4.5" X 1.5" 12.6# MMG W/ DCR -1 SHEAR VALVE WITH RKP -LATCH - 4.5 ", 12.6 #, 13 CR -80 VAM TOP BOX TO TC-II PIN XO PUP - 38 JTS 4.5 ", 12.6 #, 13 CR -80 VAM TOP TUBING ( #108 -145) - 4.5 ", 12.6 #, 13 CR -80 TC-II BOX TO VAM TOP PIN XO PUP JOINT - 4.5" 'X' NIPPLE 9 CR 3.813" ID PKG BORE - 4.5 ", 12.6 #, 13 CR -80 TC-II PIN X BOX PUP - 4.5 ", 12.6 #, 13 CR -80 VAM TOP BOX TO TC-II PIN XO PUP - 47 JTS 4.5 ", 12.6 #, 13 CR -80 VAM TOP TUBING ( #146 -193) - 4.5 ", 12.6 #, 13 CR -80 VAM TOP SPACE OUT PUP 9.75' - 1 JT 4.5 ", 12.6 #, 13 CR -80 VAM TOP TUBING ( #194) - XO PUP 4.5 ", 12.6 #, 13 CR -80 TC-II PIN X VAM TOP PIN - CAMERON 13.0" X 4.5" DX -2 TUBING HANGER ( TC-II LIFT THREADS) TAG UP ON BOTTOM OF PBR. SPACE OUT TUBING. INSTALL PUP JOINT AND CAMERON 11" TUBING HANGER. LAND TUBING IN WELL HEAD. 10:00 - 10:30 0.50 WHSUR P RUNCMP RUN IN LOCK DOWN SCREWS 10:30 - 14:45 4.25 RUNCOM P RUNCMP REVERSE CIRCULATE 557 BBLS OF CLEAN 8.5 PPG KCL. 2EVERSE 230 BBL OF 8.5 PPG KCL TREATED WITH 1 DRUM OF CORROSION INHIBITOR. FOLLOWED BY 198 BBLS OF 8.5 PPG OF CLEAN 8.5 PPG KCL. 14:45 - 15:15 0.50 RUNCOM P RUNCMP MAKE UP LANDING JOINT AND DROP BALL AND ROD. 15:15 - 18:00 2.75 RUNCOM P RUNCMP RIG UP AND PUMP DOWN THE TUBING AND IA. CHARTING BOTH. PUMPED 8 BBLS INTO THE TUBING PRESSURING UP TO 3500 PSI AND CHART FOR 30 MINUTES. GOOD TEST. BLEED DOWN TO 1550 PSI AND PRESSURE UP THE IA TO 250 PSI CHART FOR 5 MINUTES. INCREASE TO 3500 PSI AND _ CHART FOR 30 MINUTES. GOOD TEST. BLEED BOTH OFF, IA FIRST WITH RETURNS OF 8 BBLS. PUMPED 4.5 BBLS TO PRESSURE UP IA TO 2500 PSI AND SHEAR DCR -1 VALVE (4.5 BBLS RETURNED TO SURFACE) PUMPED 3 BBLS BOTH WAYS TO CONFIRM CIRCULATION THROUGH THE VALVE. 18:00 - 18:30 0.50 RUNCOM P RUNCMP DRY ROD IN TWC. 18:30 - 19:45 1.25 RUNCOM P RUNCMP TEST THE TWC FROM THE BOTTOM TO 2000 PSI FOR 10 MINUTES AND 5000 FROM ABOVE FOR 10 MINUTES. BOTH TESTS CHARTED. 19:45 - 20:30 0.75 WHSUR P RUNCMP PUMP OUT THE STACK AND BLOW DOWN THE CHOKE AND KILL LINES. Printed 9/20/2010 4:36:08PM • North America - ALASKA - BP Page 6 of 6 Operation Summary Report Common Well Name: G -23 AFE No Event Type: COM- ONSHORE (CON) Start Date: 8/16/2010 End Date: 8/20/2010 X3- 00TWJ -C (1,036,425.00 ) Project: Prudhoe Bay Site: PB G Pad Rig Name /No.: DOYON 141 Spud Date/Time: 8/4/2010 12:00:00AM Rig Release: 8/20/2010 Rig Contractor: DOYON DRILLING INC. UWI: Active Datum: G -23B @62.66ft (above Mean Sea Level) Date From - To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 20:30 - 22:00 1.50 WHSUR P RUNCMP NIPPLE DOWN THE BOP STACK AND RACK IT BACK ON THE STUMP. 22:00 - 00:00 2.00 WHSUR P RUNCMP NIPPLE UP THE TREE AND ADAPTER FLANGE. 8/20/2010 00:00 - 01:00 1.00 WHSUR P RUNCMP RIG UP AND TEST THE PACK -OFF TO 5000 PSI FOR 30 MINUTES. TEST WITNESSED BY WSL AND TOOL PUSHER DUE TO UNAVAILABILITY OF PORTABLE CHART RECORDER. 01:00 - 03:00 2.00 WHSUR P RUNCMP PRESSURE TEST THE TREE TO 300 PSI LOW AND 5000 PSI HIGH FOR 10 MINUTES CHARTED. 03:00 - 03:30 0.50 WHSUR P RUNCMP PRESSURE TEST THE LUBRICATOR TO 250 PSI LOW AND 3500 PSI FOR 10 MINUTES CHARTED. GOOD TEST. PULL THE TWC. 03:30 - 04:00 0.50 WHSUR P RUNCMP RIG UP AND HOLD PJSM WITH LRS FOR FREEZE PROTECTING. 04:00 - 07:00 3.00 WHSUR P RUNCMP PUMP 151 BBLS OF DIESEL TO FREEZE PROTECT WELL AND ALLOW TO U -TUBE. 07:00 - 08:00 1.00 WHSUR P RUNCMP RIG UP DSM AND INSTALL THE BPV. TEST THE BPV FROM BELOW TO 2000 PSI CHARTED. GOOD TEST. RIG DOWN LRS. 08:00 - 12:00 4.00 RIGD P RUNCMP ENSURE EVERYTHING IS SECURE AND THEN RIG DOWN AND PREPARE TO MOVE OFF THE WELL. RIG RELEASED AT 12:00 8- 20 -10. Printed 9/20/2010 4:36:08PM • G -23B Well History (Post -Rig Sidetrack) Date Summary T /I /O = 0/0/0 Pressure tested lubricator to 500 psi (low) for 5 min (0305 - 0310) passed/ 3500 psi (high) for 5 min (0311 - 0316) passed. Pulled 4" CIW H TWC # 256 thru tree @ 102" using 1 -2' ext. N /D -N /U tree.... Pressure tested lubricator to 500 psi (low) for 5 min (0937 -0942) passed/ 3500 psi (high) for 5 min 20 -Aug -2010 (0943 -0948) passed. Set 4" CIW H BPV # 151 thru tree @ 102" using 1 -2' ext. Doyon 141 RDMO /I /O = Vac /0/0 Pressure tested barriers (SSV, Swab, Wing) to 3500 PSI for 5 min. -Pass , Pressure tested lubricator- Low: 300 PSI / 5 MIN. (03:11- 03:16) PASS High: 3500 PSI / 5 MIN. (03:18- 03:23) PASS. Pulled 4- 1/16" CIW "H" BPV # 151 thru tree, 1 -1' ext. used, tag @ 114 "...post- Doyon 141....no 22- Aug -2010 problems. 23- Aug -2010 ** *WELL S/I ON ARRIVAL ** *(post rig) PULL PRONG FROM RHC PLUG BODY IN XN @ 8356' MD. PULLED RK -DGLV FROM ST. #2 @ 5468' SLM/5476' MD. """CONTINUED ON 8 -24 -10 WSR * ** 24- Aug -2010 ** *CONTINUED FROM 8 -23 -10 WSR ** *(post sdtrk) PULLED RKP -DCR FROM ST #3 @ 3688' SLM/3679' MD. SET RK -LGLV IN ST #3 @ 3688' SLM/3679' MD/ SET RK -OGLV IN ST #2 @ 5468' SLM/5476' MD. RAN KOT, PINNED RK RUNNING TOOL TO ST #1 @ 6670' SLM/6673' MD, APPEARS TO BE RK LATCH. PIJI LED EMPTY RHC PLUG BODY FROM XN NIPPLE @ 8345' SLM/8356' MD. Page 1 of 1 • • North America - ALASKA - BP Prudhoe Bay PB G Pad G -23 G -23B Design: G -23B Survey Report - Geographic 19 August, 2010 0 • BPPASSPORT Survey Report - Geographic Company: North America - ALASKA - BP Local Co- ordinate Reference: Well G -23 Project: Prudhoe Bay TVD Reference: G -23B @ 62.66ft (Doyon 141) Site: PB G Pad MD Reference: G -23B @ 62.66ft (Doyon 141) Well: G -23 North Reference: True Wellbore: G -23B Survey Calculation Method: Minimum Curvature Design: G -23B Database: EDM .16 - Anc Prod - WH24P Project Prudhoe Bay, GPB, PRUDHOE BAY Map System: US State Plane 1927 (Exact solution) System Datum: Mean Sea Level Geo Datum: NAD 1927 (NADCON CONUS) Using Well Reference Point Map Zone: Alaska Zone 04 Using geodetic scale factor Site PB G Pad, TR -11 -13 Site Position: Northing: 5,966,832.87ft Latitude: 70° 18' 58.211 NI From: Map Easting: 656,301.39ft Longitude: 148° 43' 59.013 W Position Uncertainty: 0.00 ft Slot Radius: 0.000 in Grid Convergence: 1.19 ° Well G -23, G -23 Well Position +N / -S 0.00 ft Northing: 5,968,911.00ft Latitude: 70° 19' 18.244 N +E / -W 0.00 ft Easting: 658,257.00 ft Longitude: 148° 43' 0.686 W Position Uncertainty 0.00 ft Wellhead Elevation: 28.00ft Ground Level: 34.66ft Wellbore G -23B Magnetics Model Name Sample Date Declination Dip Angle Field Strength ( ( (nT) BGGM2009 1/18/2010 22.34 80.94 57,681 BGGM2009 8/4/2010 22.08 80.95 57,698 Design G -23B Audit Notes: Version: Phase: ACTUAL Tie On Depth: 8,057.65 Vertical Section: Depth From (TVD) +N / -S +E / - Direction (ft) (ft) (ft) ( °) 28.00 0.00 0.00 144.81 Survey Program Date 8/19/2010 From To (ft) (ft) Survey (Wellbore) Tool Name Description 32.46 8,057.65 1 : Schlumberger GCT multishot (G -23) GCT -MS Schlumberger GCT multishot 8,063.00 8,261.66 G -23B INC +TREND R300 (G -23B) INC +TREND Inclinometer + known azi trend 8,295.22 8,478.65 G -23B MWD R300 (G -23B) MWD +IFR +MS MWD + IFR + Multi Station 8,532.47 9,884.35 G -23B MWD R400 (G -23B) MWD +IFR +MS MWD + IFR + Multi Station 9,910.39 11,374.91 G -23B MWD R500 (G -23B) MWD +IFR +MS MWD + IFR + Multi Station 8/19/2010 2:21:59PM Page 2 COMPASS 2003.16 Build 71 ! • BPPASSPORT Survey Report - Geographic Company: North America - ALASKA - BP Local Co- ordinate Reference: Well G - 23 Project: Prudhoe Bay TVD Reference: G -23B @ 62.66ft (Doyon 141) Site: PB G Pad MD Reference: G -23B @ 62.66ft (Doyon 141) Well: G - 23 North Reference: True Wellbore: G - 23B Survey Calculation Method: Minimum Curvature Design: G - 23B Database: EDM .16 - Anc Prod - WH24P Survey Measured Vertical Map Map Depth Inclination Azimuth Depth +N / -S +E / -W Northing Easting (ft) ( °) ( °) (ft) (ft) (ft) (ft) (ft) Latitude Longitude 28.00 0.00 0.00 28.00 0.00 0.00 5,968,911.00 658,257.00 70° 19' 18.244 N 148° 43' 0.686 W 32.46 0.23 283.81 32.46 0.00 -0.01 5,968,911.00 658,256.99 70° 19' 18.244 N 148° 43' 0.686 W 45.56 0.22 286.14 45.56 0.02 -0.06 5,968,911.01 658,256.94 70° 19' 18.244 N 148° 43' 0.687 W 58.66 0.17 281.67 58.66 0.03 -0.10 5,968,911.02 658,256.90 70° 19' 18.244 N 148° 43' 0.689 W 71.76 0.13 275.14 71.76 0.03 -0.14 5,968,911.03 658,256.86 70° 19' 18.244 N 148° 43' 0.690 W 84.76 0.10 266.12 84.76 0.03 -0.16 5,968,911.03 658,256.84 70° 19' 18.244 N 148° 43' 0.690 W 97.86 0.07 243.35 97.86 0.03 -0.18 5,968,911.02 658,256.82 70° 19' 18.244 N 148° 43' 0.691 W 110.86 0.05 207.54 110.86 0.02 -0.19 5,968,911.02 658,256.81 70° 19' 18.244 N 148° 43' 0.691 W 123.96 0.05 170.78 123.96 0.01 -0.19 5,968,911.00 658,256.81 70° 19' 18.244 N 148° 43' 0.691 W 136.96 0.05 143.93 136.96 0.00 -0.19 5,968,910.99 658,256.81 70° 19' 18.244 N 148° 43' 0.691 W 150.06 0.05 129.16 150.06 -0.01 -0.18 5,968,910.99 658,256.82 70° 19' 18.244 N 148° 43' 0.691 W 163.06 0.05 117.50 163.06 -0.02 -0.17 5,968,910.98 658,256.83 70° 19' 18.243 N 148° 43' 0.691 W 176.16 0.07 101.17 176.16 -0.02 -0.16 5,968,910.98 658,256.84 70° 19' 18.243 N 148° 43' 0.690 W 189.16 0.07 81.82 189.16 -0.02 -0.14 5,968,910.98 658,256.86 70° 19' 18.243 N 148° 43' 0.690 W 202.26 0.07 70.74 202.26 -0.02 -0.13 5,968,910.98 658,256.87 70° 19' 18.243 N 148° 43' 0.689 W I 215,26 0.07 76.64 215.26 -0.01 -0.11 5,968,910.99 658,256.89 70° 19' 18.244 N 148° 43' 0.689 W 228.36 0.05 90.28 228.36 -0.01 -0.10 5,968,910.99 658,256.90 70° 19' 18.244 N 148° 43' 0.689 W 241.36 0.05 93.75 241.36 -0.01 -0.09 5,968,910.99 658,256.91 70° 19' 18.244 N 148° 43' 0.688 W I 254.36 0.07 94.32 254.36 -0.01 -0.07 5,968,910.99 658,256.93 70° 19' 18.244 N 148° 43' 0.688 W 267.36 0.07 105.13 267.36 -0.01 -0.06 5,968,910.98 658,256.94 70° 19' 18.243 N 148° 43' 0.687 W 280.46 0.07 118.13 280.46 -0.02 -0.04 5,968,910.98 658,256.96 70° 19' 18.243 N 148° 43' 0.687 W 293.46 0.08 120.93 293.46 -0.03 -0.03 5,968,910.97 658,256.97 70° 19' 18.243 N 148° 43' 0.687 W 306.46 0.10 121.10 306.46 -0.04 -0.01 5,968,910.96 658,256.99 70° 19' 18.243 N 148° 43' 0.686 W . 319.56 0.10 130.24 319.56 -0.05 0.01 5,968,910.95 658,257.01 70° 19' 18.243 N 148° 43' 0.685 W 332.56 0.10 143.54 332.56 -0.07 0.02 5,968,910.93 658,257.03 70° 19' 18.243 N 148° 43' 0.685 W 345.66 0.10 160.02 345.66 -0.09 0.04 5,968,910.91 658,257.04 70° 19' 18.243 N 148° 43' 0.685 W 358.76 0.10 177.77 358.76 -0.11 0.04 5,968,910.89 658,257.04 70° 19' 18.243 N 148° 43' 0.685 W 371.76 0.10 191.11 371.76 -0.13 0.04 5,968,910.87 658,257.04 70° 19' 18.242 N 148° 43' 0.685 W I 384.86 0.10 202.29 384.86 -0.16 0.03 5,968,910.85 658,257.03 70° 19' 18.242 N 148° 43' 0.685 W 397.86 0.12 219.18 397.86 -0.18 0.02 5,968,910.82 658,257.02 70° 19' 18.242 N 148° 43' 0.685 W I 410.96 0.12 238.82 410.96 -0.19 0.00 5,968,910.81 658,257.00 70° 19' 18.242 N 148° 43' 0.686 W 423.96 0.13 254.26 423.96 -0.21 -0.03 5,968,910.79 658,256.98 70° 19' 18.242 N 148° 43' 0.687 W 1 437.06 0.13 260.63 437.06 -0.21 -0.06 5,968,910.79 658,256.95 70° 19' 18.242 N 148° 43' 0.687 W 450.16 0.13 262.58 450.16 -0.22 -0.09 5,968,910.78 658,256.92 70° 19' 18.242 N 148° 43' 0.688 W 463.26 0.13 271.51 463.26 -0.22 -0.12 5,968,910.78 658,256.89 70° 19' 18.242 N 148° 43' 0.689 W 476.36 0.15 283.27 476.36 -0.21 -0.15 5,968,910.78 658,256.86 70° 19' 18.242 N 148° 43' 0.690 W 489.46 0.15 293.10 489.46 -0.20 -0.18 5,968,910.79 658,256.82 70° 19' 18.242 N 148° 43' 0.691 W 502.56 0.15 300.18 502.56 -0.19 -0.21 5,968,910.81 658,256.79 70° 19' 18.242 N 148° 43' 0.692 W 515.66 0.15 303.46 515.66 -0.17 -0.24 5,968,910.83 658,256.76 70° 19' 18.242 N 148° 43' 0.693 W 528.76 0.15 302.23 528.76 -0.15 -0.27 5,968,910.84 658,256.73 70° 19' 18.242 N 148° 43' 0.694 W 541.96 0.15 303.49 541.96 -0.13 -0.30 5,968,910.86 658,256.71 70° 19' 18.242 N 148° 43' 0.694 W 555.06 0.15 308.56 555.06 -0.11 -0.33 5,968,910.88 658,256.68 70° 19' 18.243 N 148° 43' 0.695 W 568.16 0.15 312.82 568.16 -0.09 -0.35 5,968,910.90 658,256.65 70° 19' 18.243 N 148° 43' 0.696 W 581.26 0.15 317.49 581.26 -0.07 -0.38 5,968,910.93 658,256.63 70° 19' 18.243 N 148° 43' 0.697 W 594.26 0.15 321.71 594.26 -0.04 -0.40 5,968,910.95 658,256.60 70° 19' 18.243 N 148° 43' 0.697 W 607.16 0.15 322.49 607.16 -0.01 -0.42 5,968,910.98 658,256.58 70° 19' 18.244 N 148° 43' 0.698 W 620.16 0.15 322.16 620.16 0.01 -0.44 5,968,911.01 658,256.56 70° 19' 18.244 N 148° 43' 0.699 W , 633.16 0.15 323.53 633.16 0.04 -0.46 5,968,911.03 658,256.54 70° 19' 18.244 N 148° 43' 0.699 W I 646.16 0.15 324.90 646.16 0.07 -0.48 5,968,911.06 658,256.52 70° 19' 18.244 N 148° 43' 0.700 W 659.06 0.15 323.91 659.06 0.10 -0.50 5,968,911.09 658,256.50 70° 19' 18.245 N 148° 43' 0.700 W 672.06 0.15 321.77 672.06 0.12 -0.52 5,968,911.11 658,256.48 70° 19' 18.245 N 148° 43' 0.701 W 685.06 0.15 321.22 685.06 0.15 -0.54 5,968,911.14 658,256.46 70° 19' 18.245 N 148° 43' 0.702 W 698.06 0.15 322.71 698.06 0.18 -0.56 5,968,911.17 658,256.43 70° 19' 18.245 N 148° 43' 0.702 W 710.96 0.15 323.42 710.96 0.20 -0.58 5,968,911.19 658,256.41 70° 19' 18.246 N 148° 43' 0.703 W 723.96 0.15 322.51 723.96 0.23 -0.60 5,968,911.22 658,256.39 70° 19' 18.246 N 148° 43' 0.703 W 8/19/2010 2:21:59PM Page 3 COMPASS 2003.16 Build 71 • BPPASSPORT Survey Report - Geographic Company: North America - ALASKA - BP Local Co- ordinate Reference: Well G - 23 Project: Prudhoe Bay TVD Reference: G -23B @ 62.66ft (Doyon 141) Site: PB G Pad MD Reference: G -23B @ 62.66ft (Doyon 141) Well: G - 23 North Reference: True Wellbore: G - 23B Survey Calculation Method: Minimum Curvature Design: G - 23B Database: EDM .16 - Anc Prod - WH24P Survey Measured Vertical Map Map Depth Inclination Azimuth Depth +N / -S +E / -W Northing Easting (ft) ( °) ( °) (ft) (ft) (ft) (ft) (ft) Latitude Longitude 736.96 0.15 323.28 736.96 0.26 -0.62 5,968,911.25 658,256.37 70° 19' 18.246 N 148° 43' 0.704 W I 749.96 0.15 327.42 749.96 0.29 -0.64 5,968,911.27 658,256.35 70° 19' 18.246 N 148° 43' 0.704 W 762.96 0.15 333.52 762.96 0.32 -0.66 5,968,911.30 658,256.33 70° 19' 18.247 N 148° 43' 0.705 W 775.96 0.13 338.47 775.96 0.34 -0.67 5,968,911.33 658,256.32 70° 19' 18.247 N 148° 43' 0.705 W 788.76 0.13 343.45 788.76 0.37 -0.68 5,968,911.36 658,256.31 70° 19' 18.247 N 148° 43' 0.706 W 801.66 0.13 350.63 801.66 0.40 -0.69 5,968,911.39 658,256.30 70° 19' 18.248 N 148° 43' 0.706 W 814.46 0.13 355.98 814.46 0.43 -0.69 5,968,911.41 658,256.30 70° 19' 18.248 N 148° 43' 0.706 W 827.46 0.13 359.70 827.46 0.46 -0.69 5,968,911.44 658,256.30 70° 19' 18.248 N 148° 43' 0.706 W 840.46 0.13 6.31 840.46 0.49 -0.69 5,968,911.47 658,256.30 70° 19' 18.248 N 148° 43' 0.706 W 853.46 0.13 18.75 853.46 0.52 -0.68 5,968,911.50 658,256.30 70° 19' 18.249 N 148° 43' 0.706 W 1 866.56 0.13 37.60 866.56 0.54 -0.67 5,968,911.53 658,256.32 70° 19' 18.249 N 148° 43' 0.705 W 879.56 0.12 54.74 879.56 0.56 -0.65 5,968,911.55 658,256.34 70° 19' 18.249 N 148° 43' 0.705 W 892.56 0.12 67.45 892.56 0.58 -0.63 5,968,911.56 658,256.36 70° 19' 18.249 N 148° 43' 0.704 W I 905.66 0.12 78.97 905.66 0.58 -0.60 5,968,911.57 658,256.39 70° 19' 18.249 N 148° 43' 0.703 W I 918.66 0.12 86.89 918.66 0.59 -0.57 5,968,911.57 658,256.41 70° 19' 18.249 N 148° 43' 0.702 W I 931.66 0.10 96.15 931.66 0.59 -0.55 5,968,911.57 658,256.44 70° 19' 18.249 N 148° 43' 0.702 W 944.76 0.08 113.18 944.76 0.58 -0.53 5,968,911.57 658,256.46 70° 19' 18.249 N 148° 43' 0.701 W 957.76 0.07 133.94 957.76 0.57 -0.52 5,968,911.56 658,256.47 70° 19' 18.249 N 148° 43' 0.701 W 970.76 0.07 158.83 970.76 0.56 -0.51 5,968,911.55 658,256.48 70° 19' 18.249 N 148° 43' 0.701 W 983.76 0.07 191.48 983.76 0.54 -0.51 5,968,911.53 658,256.48 70° 19' 18.249 N 148° 43' 0.700 W I 996.86 0.07 221.09 996.86 0.53 -0.51 5,968,911.52 658,256.48 70° 19' 18.249 N 148° 43' 0.701 W 1,009.86 0.08 239.26 1,009.86 0.52 -0.53 5,968,911.51 658,256.46 70° 19' 18.249 N 148° 43' 0.701 W I 1,022.86 0.10 245.07 1,022.86 0.51 -0.54 5,968,911.50 658,256.45 70° 19' 18.249 N 148° 43' 0.702 W 1,035.96 0.10 241.08 1,035.96 0.50 -0.56 5,968,911.49 658,256.43 70° 19' 18.249 N 148° 43' 0.702 W 1,048.96 0.12 242.38 1,048.96 0.49 -0.59 5,968,911.48 658,256.40 70° 19' 18.248 N 148° 43' 0.703 W 1,062.06 0.12 253.90 1,062.06 0.48 -0.61 5,968,911.46 658,256.38 70° 19' 18.248 N 148° 43' 0.704 W 1,075.06 0.13 265.37 1,075.06 0.47 -0.64 5,968,911.46 658,256.35 70° 19' 18.248 N 148° 43' 0.704 W 1,088.16 0.13 266.28 1,088.16 0.47 -0.67 5,968,911.46 658,256.32 70° 19' 18.248 N 148° 43' 0.705 W 1,101.16 0.13 259.07 1,101.16 0.47 -0.70 5,968,911.45 658,256.29 70° 19' 18.248 N 148° 43' 0.706 W 1,114.16 0.13 250.44 1,114.16 0.46 -0.73 5,968,911.44 658,256.26 70° 19' 18.248 N 148° 43' 0.707 W 1,127.16 0.13 247.21 1,127.16 0.45 -0.75 5,968,911.43 658,256.24 70° 19' 18.248 N 148° 43' 0.708 W 1,140.06 0.13 248.86 1,140.06 0.44 -0.78 5,968,911.42 658,256.21 70° 19' 18.248 N 148° 43' 0.709 W 1,152.96 0.13 251.48 1,152.96 0.43 -0.81 5,968,911.41 658,256.18 70° 19' 18.248 N 148° 43' 0.709 W 1,165.86 0.13 250.85 1,165.86 0.42 -0.84 5,968,911.40 658,256.16 70° 19' 18.248 N 148° 43' 0.710 W ! 1,178.76 0.13 244.49 1,178.76 0.41 -0.86 5,968,911.39 658,256.13 70° 19' 18.248 N 148° 43' 0.711 W 1 1,191.86 0.13 230.33 1,191.86 0.39 -0.89 5,968,911.37 658,256.10 70° 19' 18.247 N 148° 43' 0.712 W 1,204.96 0.12 218.48 1,204.96 0.37 -0.91 5,968,911.35 658,256.08 70° 19' 18.247 N 148° 43' 0.712 W 1,217.96 0.12 209.70 1,217.96 0.35 -0.92 5,968,911.33 658,256.07 70° 19' 18.247 N 148° 43' 0.713 W 1,231.06 0.12 198.49 1,231.06 0.32 -0.93 5,968,911.30 658,256.06 70° 19' 18.247 N 148° 43' 0.713 W 1,244.06 0.12 181.85 1,244.06 0.30 -0.94 5,968,911.28 658,256.05 70° 19' 18.247 N 148° 43' 0.713 W 1,257.16 0.12 165.97 1,257.16 0.27 -0.94 5,968,911.25 658,256.06 70° 19' 18.246 N 148° 43' 0.713 W 1,270.16 0.12 161.03 1,270.16 0.24 -0.93 5,968,911.22 658,256.07 70° 19' 18.246 N 148° 43' 0.713 W 1,283.26 0.12 160.32 1,283.26 0.22 -0.92 5,968,911.20 658,256.08 70° 19' 18.246 N 148° 43' 0.713 W 1,296.36 0.12 153.44 1,296.36 0.19 -0.91 5,968,911.17 658,256.09 70° 19' 18.246 N 148° 43' 0.712 W 1,309.56 0.10 138.47 1,309.56 0.17 -0.89 5,968,911.15 658,256.10 70° 19' 18.245 N 148° 43' 0.712 W 1,322.66 0.10 127.28 1,322.66 0.16 -0.88 5,968,911.14 658,256.12 70° 19' 18.245 N 148° 43° 0.711 W i 1,335.76 0.08 121.70 1,335.76 0.14 -0.86 5,968,911.13 658,256.14 70° 19' 18.245 N 148° 43' 0.711 W ' 1,348.86 0.08 113.88 1,348.86 0.14 -0.85 5,968,911.12 658,256.15 70° 19' 18.245 N 148° 43' 0.710 W 1,361.86 0.07 98.75 1,361.86 0.13 -0.83 5,968,911.11 658,256.17 70° 19' 18.245 N 148° 43' 0.710 W 1,374.96 0.05 69.22 1,374.96 0.13 -0.82 5,968,911.12 658,256.18 70° 19' 18.245 N 148° 43' 0.710 W 1,387.96 0.05 38.84 1,387.96 0.14 -0.81 5,968,911.12 658,256.19 70° 19' 18.245 N 148° 43' 0.709 W 1,400.86 0.05 15.10 1,400.86 0.15 -0.80 5,968,911.13 658,256.20 70° 19' 18.245 N 148° 43' 0.709 W 1,413.76 0.05 353.31 1,413.76 0.16 -0.80 5,968,911.14 658,256.20 70° 19' 18.245 N 148° 43' 0.709 W I 1,426.76 0.07 342.85 1,426.76 0.17 -0.80 5,968,911.16 658,256.19 70° 19' 18.245 N 148° 43' 0.709 W 1,439.66 0.07 333.61 1,439.66 0.19 -0.81 5,968,911.17 658,256.19 70° 19' 18.245 N 148° 43' 0.709 W 8/19/2010 2:21:59PM Page 4 COMPASS 2003.16 Build 71 BPPASSPORT Survey Report - Geographic Company: North America - ALASKA - BP Local Co- ordinate Reference: Well G - 23 Project: Prudhoe Bay TVD Reference: G -23B @ 62.66ft (Doyon 141) Site: PB G Pad MD Reference: G -23B @ 62.66ft (Doyon 141) Well: G - 23 North Reference: True Wellbore: G - 23B Survey Calculation Method: Minimum Curvature Design: G - 23B Database: EDM .16 - Anc Prod - WH24P Survey Measured Vertical Map Map Depth Inclination Azimuth Depth +N / -S +E / -W Northing Easting (ft) ( °) ( °) (ft) (ft) (ft) (ft) (ft) Latitude Longitude 1,452.56 0.07 329.55 1,452.56 0.20 -0.82 5,968,911.18 658,256.18 70° 19' 18.246 N 148° 43' 0.710 W 1,465.46 0.05 333.01 1,465.46 0.21 -0.82 5,968,911.20 658,256.17 70° 19' 18.246 N 148° 43' 0.710 W 1,478.36 0.03 335.60 1,478.36 0.22 -0.83 5,968,911.20 658,256.17 70° 19' 18.246 N 148° 43' 0.710 W 1,491.26 0.02 344.54 1,491.26 0.23 -0.83 5,968,911.21 658,256.17 70° 19' 18.246 N 148° 43' 0.710 W ' 1,504.26 0.02 12.19 1,504.26 0.23 -0.83 5,968,911.21 658,256.17 70° 19' 18.246 N 148° 43' 0.710 W I 1,517.16 0.02 60.08 1,517.16 0.23 -0.83 5,968,911.22 658,256.17 70° 19' 18.246 N 148° 43' 0.710 W 1,530.16 0.02 105.53 1,530.16 0.23 -0.82 5,968,911.22 658,256.17 70° 19' 18.246 N 148° 43' 0.710 W I 1,543.06 0.05 130.12 1,543.06 0.23 -0.82 5,968,911.21 658,256.18 70° 19' 18.246 N 148° 43' 0.710 WI 1,556.06 0.12 145.11 1,556.06 0.22 -0.80 5,968,911.20 658,256.19 70° 19' 18.246 N 148° 43' 0.709 W' 1,568.96 0.18 159.12 1,568.96 0.19 -0.79 5,968,911.17 658,256.21 70° 19' 18.245 N 148° 43' 0.709 W 1,581.66 0.23 167.87 1,581.66 0.14 -0.78 5,968,911.13 658,256.22 70° 19' 18.245 N 148° 43' 0.708 W 1,594.36 0.25 171.89 1,594.36 0.09 -0.77 5,968,911.07 658,256.23 70° 19' 18.245 N 148° 43' 0.708 W 1,607.16 0.27 175.41 1,607.16 0.03 -0.76 5,968,911.02 658,256.24 70° 19' 18.244 N 148° 43' 0.708 W ' 1,619.86 0.28 178.11 1,619.86 -0.03 -0.76 5,968,910.96 658,256.24 70° 19' 18.243 N 148° 43' 0.708 W 1,632.86 0.27 181.37 1,632.86 -0.09 -0.76 5,968,910.89 658,256.24 70° 19' 18.243 N 148° 43' 0.708 W I 1,645.76 0.25 182.74 1,645.76 -0.15 -0.76 5,968,910.83 658,256.24 70° 19' 18.242 N 148° 43' 0.708 W 1,658.76 0.22 185.37 1,658.76 -0.20 -0.76 5,968,910.78 658,256.24 70° 19' 18.242 N 148° 43' 0.708 W 1,671.76 0.20 196.30 1,671.76 -0.25 -0.77 5,968,910.73 658,256.23 70° 19' 18.241 N 148° 43' 0.708 W 1,684.76 0.17 205.00 1,684.76 -0.29 -0.79 5,968,910.69 658,256.22 70° 19' 18.241 N 148° 43' 0.709 W 1,697.66 0.15 203.75 1,697.66 -0.32 -0.80 5,968,910.66 658,256.21 70° 19' 18.240 N 148° 43' 0.709 W 1,710.66 0.13 199.51 1,710.66 -0.35 -0.81 5,968,910.63 658,256.19 70° 19' 18.240 N 148° 43' 0.709 W 1,723.56 0.10 174.89 1,723.56 -0.38 -0.82 5,968,910.61 658,256.19 70° 19' 18.240 N 148° 43' 0.710 W 1,736.56 0.08 145.12 1,736.56 -0.39 -0.81 5,968,910.59 658,256.20 70° 19' 18.240 N 148° 43' 0.709 W ' 1,749.56 0.10 132.72 1,749.56 -0.41 -0.80 5,968,910.57 658,256.21 70° 19' 18.240 N 148° 43' 0.709 W 1,762.46 0.17 126.93 1,762.46 -0.43 -0.77 5,968,910.55 658,256.23 70° 19' 18.239 N 148° 43' 0.708 W 1,775.46 0.25 132.89 1,775.46 -0.46 -0.74 5,968,910.52 658,256.27 70° 19' 18.239 N 148° 43' 0.707 W 1,788.56 0.30 140.13 1,788.56 -0.51 -0.70 5,968,910.48 658,256.32 70° 19' 18.239 N 148° 43' 0.706 W 1,801.46 0.30 141.54 1,801.46 -0.56 -0.65 5,968,910.43 658,256.36 70° 19' 18.238 N 148° 43' 0.705 W 1,814.46 0.30 143.35 1,814.46 -0.61 -0.61 5,968,910.38 658,256.40 70° 19' 18.238 N 148° 43' 0.704 W 1,827.46 0.28 149.21 1,827.45 -0.67 -0.57 5,968,910.32 658,256.44 70° 19' 18.237 N 148° 43' 0.703 W 1,840.46 0.27 156.43 1,840.45 -0.72 -0.55 5,968,910.27 658,256.47 70° 19' 18.237 N 148° 43' 0.702 W 1,853.46 0.22 168.50 1,853.45 -0.77 -0.53 5,968,910.21 658,256.49 70° 19' 18.236 N 148° 43' 0.701 W 1,866.36 0.13 170.39 1,866.35 -0.81 -0.52 5,968,910.18 658,256.50 70° 19' 18.236 N 148° 43' 0.701 W 1,879.36 0.07 165.73 1,879.35 -0.84 -0.52 5,968,910.15 658,256.50 70° 19' 18.235 N 148° 43' 0.701 W 1,892.36 0.07 154.53 1,892.35 -0.85 -0.51 5,968,910.14 658,256.51 70° 19' 18.235 N 148° 43' 0.701 W 1,905.36 0.07 120.60 1,905.35 -0.86 -0.50 5,968,910.13 658,256.52 70° 19' 18.235 N 148° 43' 0.700 W 1,918.36 0.13 102.47 1,918.35 -0.87 -0.48 5,968,910.12 658,256.54 70° 19' 18.235 N 148° 43' 0.700 W 1,931.26 0.22 114.20 1,931.25 -0.88 -0.44 5,968,910.11 658,256.58 70° 19' 18.235 N 148° 43' 0.699 W 1,944.26 0.25 125.08 1,944.25 -0.91 -0.40 5,968,910.08 658,256.62 70° 19' 18.235 N 148° 43' 0.697 W • 1,957.26 0.23 128.52 1,957.25 -0.94 -0.35 5,968,910.05 658,256.67 70° 19' 18.234 N 148° 43' 0.696 W 1,970.26 0.22 134.52 1,970.25 -0.97 -0.32 5,968,910.02 658,256.71 70° 19' 18.234 N 148° 43' 0.695 W 1,983.26 0.18 150.91 1,983.25 -1.01 -0.29 5,968,909.98 658,256.73 70° 19' 18.234 N 148° 43' 0.694 W i 1,996.36 0.10 142.28 1,996.35 -1.04 -0.27 5,968,909.96 658,256.75 70° 19' 18.233 N 148° 43' 0.694 W 2,009.36 0.05 113.21 2,009.35 -1.05 -0.26 5,968,909.95 658,256.76 70° 19' 18.233 N 148° 43' 0.693 W 2,022.36 0.10 100.98 2,022.35 -1.05 -0.24 5,968,909.94 658,256.78 70° 19' 18.233 N 148° 43' 0.693 W 2,035.36 0.20 105.61 2,035.35 -1.06 -0.21 5,968,909.93 658,256.81 70° 19' 18.233 N 148° 43' 0.692 W 2,048.36 0.23 118.71 2,048.35 -1.08 -0.16 5,968,909.92 658,256.86 70° 19' 18.233 N 148° 43' 0.691 W 2,061.16 0.23 123.30 2,061.15 -1.11 -0.12 5,968,909.89 658,256.90 70° 19' 18.233 N 148° 43' 0.689 W 2,073.86 0.22 121.99 2,073.85 -1.13 -0.08 5,968,909.87 658,256.95 70° 19' 18.232 N 148° 43' 0.688 W 2,086.66 0.18 123.16 2,086.65 -1.16 -0.04 5,968,909.84 658,256.98 70° 19' 18.232 N 148° 43' 0.687 W 2,099.46 0.18 128.18 2,099.45 -1.18 -0.01 5,968,909.82 658,257.02 70° 19' 18.232 N 148° 43' 0.686 W 2,112.46 0.15 129.98 2,112.45 -1.20 0.02 5,968,909.80 658,257.05 70° 19' 18.232 N 148° 43' 0.685 W 2,125.46 0.13 128.93 2,125.45 -1.22 0.05 5,968,909.78 658,257.07 70° 19' 18.232 N 148° 43' 0.684 W 2,138.46 0.10 134.01 2,138.45 -1.24 0.07 5,968,909.76 658,257.09 70° 19' 18.231 N 148° 43' 0.684 W 2,151.46 0.10 144.18 2,151.45 -1.26 0.08 5,968,909.74 658,257.11 70° 19' 18.231 N 148° 43' 0.683 W 8/19/2010 2:21:59PM Page 5 COMPASS 2003.16 Build 71 BPPASSPORT Survey Report - Geographic Company: North America - ALASKA - BP Local Co- ordinate Reference: Well G - 23 Project: Prudhoe Bay TVD Reference: G -23B @ 62.66ft (Doyon 141) Site: PB G Pad MD Reference: G -23B @ 62.66ft (Doyon 141) Well: G - 23 North Reference: True Wellbore: G - 23B Survey Calculation Method: Minimum Curvature Design: G - 23B Database: EDM .16 - Anc Prod - WH24P Survey Measured Vertical Map Map Depth Inclination Azimuth Depth +N / -S +E / -W Northing Easting (ft) (0) (°) (ft) (ft) (ft) (ft) (ft) Latitude Longitude 2,164.36 0.08 153.36 2,164.35 -1.28 0.09 5,968,909.73 658,257.12 70° 19' 18.231 N 148° 43' 0.683 W 2,177.16 0.07 147.31 2,177.15 -1.29 0.10 5,968,909.71 658,257.13 70° 19' 18.231 N 148° 43' 0.683 W 2,189.96 0.03 134.97 2,189.95 -1.30 0.11 5,968,909.70 658,257.13 70° 19' 18.231 N 148° 43' 0.683 W i 2,202.76 0.03 106.84 2,202.75 -1.30 0.11 5,968,909.70 658,257.14 70° 19' 18.231 N 148° 43' 0.683 W I 2,215.56 0.05 76.40 2,215.55 -1.30 0.12 5,968,909.70 658,257.15 70° 19' 18.231 N 148° 43' 0.682 W ' 2,228.36 0.08 76.21 2,228.35 -1.30 0.13 5,968,909.70 658,257.16 70° 19' 18.231 N 148° 43' 0.682 W ' 2,241.26 0.13 87.83 2,241.25 -1.30 0.16 5,968,909.71 658,257.18 70° 19' 18.231 N 148° 43' 0.681 W 2,254.06 0.22 102.20 2,254.05 -1.30 0.20 5,968,909.70 658,257.22 70° 19' 18.231 N 148° 43' 0.680 W ' 2,266.96 0.25 108.57 2,266.95 -1.32 0.25 5,968,909.69 658,257.27 70° 19' 18.231 N 148° 43' 0.679 W ; 2,279.76 0.23 106.16 2,279.75 -1.33 0.30 5,968,909.68 658,257.33 70° 19' 18.231 N 148° 43' 0.677 W 2,292.56 0.22 104.85 2,292.55 -1.34 0.35 5,968,909.66 658,257.37 70° 19' 18.230 N 148° 43' 0.676 W 2,305.46 0.20 108.26 2,305.45 -1.36 0.39 5,968,909.65 658,257.42 70° 19' 18.230 N 148° 43' 0.674 W 2,318.26 0.20 111.30 2,318.25 -1.37 0.43 5,968,909.64 658,257.46 70° 19' 18.230 N 148° 43' 0.673 W 2,331.06 0.20 113.58 2,331.05 -1.39 0.47 5,968,909.62 658,257.50 70° 19' 18.230 N 148° 43' 0.672 W 2,343.96 0.20 117.04 2,343.95 -1.41 0.52 5,968,909.60 658,257.54 70° 19' 18.230 N 148° 43' 0.671 W 2,356.76 0.20 118.38 2,356.75 -1.43 0.55 5,968,909.58 658,257.58 70° 19' 18.230 N 148° 43' 0.670 W 2,369.66 0.18 118.22 2,369.65 -1.45 0.59 5,968,909.56 658,257.62 70° 19' 18.229 N 148° 43' 0.668 W 2,382.46 0.18 120.73 2,382.45 -1.47 0.63 5,968,909.54 658,257.66 70° 19' 18.229 N 148° 43' 0.667 W 2,395.36 0.20 123.86 2,395.35 -1.49 0.66 5,968,909.52 658,257.69 70° 19' 18.229 N 148° 43' 0.666 W I 2,408.16 0.20 124.98 2,408.15 -1.52 0.70 5,968,909.50 658,257.73 70° 19' 18.229 N 148° 43' 0.665 W 2,421.06 0.20 126.50 2,421.05 -1.54 0.74 5,968,909.47 658,257.77 70° 19' 18.228 N 148° 43' 0.664 W 2,433.86 0.18 127.86 2,433.85 -1.57 0.77 5,968,909.45 658,257.80 70° 19' 18.228 N 148° 43' 0.663 W 2,446.76 0.17 128.15 2,446.75 -1.59 0.80 5,968,909.42 658,257.84 70° 19' 18.228 N 148° 43' 0.662 W 2,459.56 0.15 131.29 2,459.55 -1.62 0.83 5,968,909.40 658,257.86 70° 19' 18.228 N 148° 43' 0.662 W 2,472.36 0.15 138.29 2,472.35 -1.64 0.85 5,968,909.38 658,257.89 70° 19' 18.228 N 148° 43' 0.661 W 2,485.16 0.12 150.23 2,485.15 -1.67 0.87 5,968,909.35 658,257.91 70° 19' 18.227 N 148° 43' 0.660 W ! 2,498.06 0.08 148.37 2,498.05 -1.68 0.88 5,968,909.33 658,257.92 70° 19' 18.227 N 148° 43' 0.660 W 2,510.86 0.07 141.01 2,510.85 -1.70 0.89 5,968,909.32 658,257.93 70° 19' 18.227 N 148° 43' 0.660 W 2,523.76 0.08 153.83 2,523.75 -1.71 0.90 5,968,909.31 658,257.94 70° 19' 18.227 N 148° 43' 0.659 W 2,536.36 0.07 138.23 2,536.35 -1.73 0.91 5,968,909.29 658,257.95 70° 19' 18.227 N 148° 43' 0.659 W 2,548.96 0.05 107.73 2,548.95 -1.73 0.92 5,968,909.29 658,257.96 70° 19' 18.227 N 148° 43' 0.659 W 2,561.56 0.03 81.84 2,561.55 -1.73 0.93 5,968,909.29 658,257.97 70° 19' 18.227 N 148° 43' 0.659 W 1 2,574.16 0.05 32.99 2,574.15 -1.73 0.94 5,968,909.29 658,257.97 70° 19' 18.227 N 148° 43' 0.658 W 2,587.06 0.10 3.77 2,587.05 -1.71 0.94 5,968,909.31 658,257.97 70° 19' 18.227 N 148° 43' 0.658 W 2,599.86 0.12 9.08 2,599.85 -1.69 0.94 5,968,909.33 658,257.98 70° 19' 18.227 N 148° 43' 0.658 W I 2,612.76 0.15 24.00 2,612.75 -1.66 0.95 5,968,909.36 658,257.99 70° 19' 18.227 N 148° 43' 0.658 W 1 2,625.66 0.17 35.97 2,625.65 -1.63 0.97 5,968,909.39 658,258.00 70° 19' 18.228 N 148° 43' 0.657 W I 2,638.46 0.18 41.54 2,638.45 -1.60 0.99 5,968,909.42 658,258.03 70° 19' 18.228 N 148° 43' 0.657 W 1 2,651.36 0.20 46.01 2,651.35 -1.57 1.02 5,968,909.45 658,258.06 70° 19' 18.228 N 148° 43' 0.656 W 1 2,664.16 0.22 46.85 2,664.15 -1.54 1.06 5,968,909.49 658,258.09 70° 19' 18.229 N 148° 43' 0.655 W 2,677.06 0.23 46.48 2,677.05 -1.50 1.09 5,968,909.52 658,258.13 70° 19' 18.229 N 148° 43' 0.654 W 2,689.86 0.25 47.80 2,689.85 -1.46 1.13 5,968,909.56 658,258.16 70° 19' 18.229 N 148° 43' 0.653 W 2,702.76 0.28 46.88 2,702.75 -1.42 1.18 5,968,909.60 658,258.21 70° 19' 18.230 N 148° 43' 0.651 W 2,715.56 0.30 43.54 2,715.55 -1.38 1.22 5,968,909.65 658,258.25 70° 19' 18.230 N 148° 43' 0.650 W 2,728.46 0.32 38.72 2,728.45 -1.33 1.27 5,968,909.70 658,258.30 70° 19' 18.231 N 148° 43' 0.649 W 2,741.36 0.33 36.37 2,741.35 -1.27 1.31 5,968,909.76 658,258.34 70° 19' 18.231 N 148° 43' 0.647 W 2,754.16 0.35 35.26 2,754.15 -1.21 1.36 5,968,909.82 658,258.38 70° 19' 18.232 N 148° 43' 0.646 W 2,767.06 0.37 33.87 2,767.05 -1.14 1.40 5,968,909.89 658,258.43 70° 19' 18.232 N 148° 43' 0.645 W 1 2,779.96 0.37 30.96 2,779.95 -1.07 1.45 5,968,909.96 658,258.47 70° 19' 18.233 N 148° 43' 0.643 W 2,792.86 0.40 27.52 2,792.85 -0.99 1.49 5,968,910.04 658,258.51 70° 19' 18.234 N 148° 43' 0.642 W 2,805.76 0.42 26.63 2,805.75 -0.91 1.53 5,968,910.12 658,258.55 70° 19' 18.235 N 148° 43' 0.641 W 2,818.56 0.43 25.56 2,818.55 -0.83 1.57 5,968,910.21 658,258.59 70° 19' 18.236 N 148° 43' 0.640 W 2,831.46 0.43 24.37 2,831.45 -0.74 1.62 5,968,910.30 658,258.63 70° 19' 18.236 N 148° 43' 0.639 W 2,844.36 0.47 23.32 2,844.35 -0.65 1.66 5,968,910.39 658,258.67 70° 19' 18.237 N 148° 43' 0.637 W 2,857.26 0.48 20.29 2,857.25 -0.55 1.70 5,968,910.49 658,258.71 70° 19' 18.238 N 148° 43' 0.636 W 8/19/2010 2:21:59PM Page 6 COMPASS 2003.16 Build 71 • 0 BPPASSPORT Survey Report - Geographic Company: North America - ALASKA - BP Local Co- ordinate Reference: Well G - 23 Project: Prudhoe Bay TVD Reference: G -23B @ 62.66ft (Doyon 141) Site: PB G Pad MD Reference: G -23B @ 62.66ft (Doyon 141) Well: G - 23 North Reference: True Wellbore: G - 23B Survey Calculation Method: Minimum Curvature Design: G - 23B Database: EDM .16 - Anc Prod - WH24P Survey I Measured Vertical Map Map Depth Inclination Azimuth Depth +N / -S +E / -W Northing Easting (ft) ( °) ( (ft) (ft) (ft) (ft) (ft) Latitude Longitude 2,870.16 0.50 17.32 2,870.15 -0.44 1.73 5,968,910.59 658,258.74 70° 19' 18.239 N 148° 43' 0.635 W 2,883.06 0.52 15.92 2,883.05 -0.33 1.76 5,968,910.71 658,258.77 70° 19' 18.240 N 148° 43' 0.634 W 2,895.86 0.50 13.58 2,895.85 -0.22 1.79 5,968,910.82 658,258.80 70° 19' 18.241 N 148° 43' 0.633 W I 2,908.76 0.47 10.66 2,908.75 -0.12 1.82 5,968,910.92 658,258.82 70° 19' 18.243 N 148° 43' 0.633 W 2,921.66 0.47 8.79 2,921.65 -0.01 1.83 5,968,911.03 658,258.83 70° 19' 18.244 N 148° 43' 0.632 W 2,934.56 0.50 8.00 2,934.54 0.10 1.85 5,968,911.14 658,258.85 70° 19' 18.245 N 148° 43' 0.632 W 2,947.26 0.52 7.77 2,947.24 0.21 1.87 5,968,911.25 658,258.86 70° 19' 18.246 N 148° 43' 0.631 W 2,959.96 0.47 10.46 2,959.94 0.32 1.88 5,968,911.36 658,258.88 70° 19' 18.247 N 148° 43' 0.631 W I 2,972.56 0.37 15.61 2,972.54 0.41 1.90 5,968,911.45 658,258.89 70° 19' 18.248 N 148° 43' 0.630 W � 2,985.26 0.32 19.37 2,985.24 0.48 1.93 5,968,911.52 658,258.92 70° 19' 18.248 N 148° 43' 0.630 W ' 2,997.96 0.30 18.21 2,997.94 0.55 1.95 5,968,911.59 658,258.94 70° 19' 18.249 N 148° 43' 0.629 W 1 3,010.56 0.28 9.12 3,010.54 0.61 1.96 5,968,911.65 658,258.95 70° 19' 18.250 N 148° 43' 0.628 W 3,023.26 0.27 6.27 3,023.24 0.67 1.97 5,968,911.71 658,258.96 70° 19' 18.250 N 148° 43' 0.628 W 3,035.96 0.27 9.07 3,035.94 0.73 1.98 5,968,911.77 658,258.96 70° 19' 18.251 N 148° 43' 0.628 W 3,048.66 0.28 6.93 3,048.64 0.79 1.99 5,968,911.83 658,258.97 70° 19' 18.251 N 148° 43' 0.628 W 3,061.36 0.28 3.63 3,061.34 0.85 1.99 5,968,911.89 658,258.98 70° 19' 18.252 N 148° 43' 0.628 W 3,074.06 0.28 1.51 3,074.04 0.91 2.00 5,968,911.95 658,258.98 70° 19' 18.253 N 148° 43' 0.627 W 3,086.76 0.25 1.92 3,086.74 0.97 2.00 5,968,912.01 658,258.98 70° 19' 18.253 N 148° 43' 0.627 W 3,099.46 0.25 1.72 3,099.44 1.03 2.00 5,968,912.07 658,258.98 70° 19' 18.254 N 148° 43' 0.627 W 3,112.26 0.27 2.70 3,112.24 1.08 2.00 5,968,912.12 658,258.98 70° 19' 18.254 N 148° 43' 0.627 W 3,124.76 0.28 0.22 3,124.74 1.14 2.00 5,968,912.18 658,258.98 70° 19' 18.255 N 148° 43' 0.627 W 3,137.26 0.30 355.15 3,137.24 1.21 2.00 5,968,912.25 658,258.97 70° 19' 18.256 N 148° 43' 0.627 W 3,149.76 0.32 353.91 3,149.74 1.27 1.99 5,968,912.32 658,258.97 70° 19' 18.256 N 148° 43' 0.628 W 3,162.26 0.32 353.68 3,162.24 1.34 1.99 5,968,912.38 658,258.96 70° 19' 18.257 N 148° 43' 0.628 W 3,174.86 0.32 352.02 3,174.84 1.41 1.98 5,968,912.45 658,258.95 70° 19' 18.258 N 148° 43' 0.628 W 3,187.66 0.33 347.62 3,187.64 1.48 1.97 5,968,912.53 658,258.93 70° 19' 18.258 N 148° 43' 0.628 W 3,200.36 0.40 349.16 3,200.34 1.56 1.95 5,968,912.60 658,258.92 70° 19' 18.259 N 148° 43' 0.629 W 3,213.06 0.45 351.87 3,213.04 1.66 1.93 5,968,912.70 658,258.90 70° 19' 18.260 N 148° 43' 0.629 W 3,225.76 0.40 350.33 3,225.74 1.75 1.92 5,968,912.79 658,258.88 70° 19' 18.261 N 148° 43' 0.630 W i 3,238.46 0.38 350.97 3,238.44 1.83 1.91 5,968,912.87 658,258.87 70° 19' 18.262 N 148° 43' 0.630 W 3,251.26 0.38 352.58 3,251.24 1.92 1.89 5,968,912.96 658,258.85 70° 19' 18.263 N 148° 43' 0.630 W' 3,263.96 0.38 351.98 3,263.94 2.00 1.88 5,968,913.04 658,258.84 70° 19' 18.263 N 148° 43' 0.631 W 3,276.76 0.37 350.06 3,276.74 2.08 1.87 5,968,913.12 658,258.82 70° 19' 18.264 N 148° 43' 0.631 W 3,289.46 0.33 348.87 3,289.44 2.16 1.85 5,968,913.20 658,258.81 70° 19' 18.265 N 148° 43' 0.632 W 3,302.16 0.32 348.44 3,302.14 2.23 1.84 5,968,913.27 658,258.79 70° 19' 18.266 N 148° 43' 0.632 W 3,314.96 0.30 348.06 3,314.94 2.30 1.83 5,968,913.34 658,258.78 70° 19' 18.266 N 148° 43' 0.632 W 3,327.66 0.27 347.33 3,327.64 2.36 1.81 5,968,913.40 658,258.76 70° 19' 18.267 N 148° 43' 0.633 W 3,340.36 0.27 350.90 3,340.34 2.42 1.80 5,968,913.46 658,258.75 70° 19' 18.267 N 148° 43' 0.633 W 3,353.16 0.22 349.92 3,353.14 2.47 1.79 5,968,913.51 658,258.74 70° 19' 18.268 N 148° 43' 0.633 W 3,365.86 0.22 340.42 3,365.84 2.52 1.78 5,968,913.56 658,258.73 70° 19' 18.268 N 148° 43' 0.634 W 3,378.66 0.27 332.62 3,378.64 2.57 1.76 5,968,913.61 658,258.70 70° 19' 18.269 N 148° 43' 0.634 W 3,391.46 0.25 328.99 3,391.44 2.62 1.73 5,968,913.66 658,258.67 70° 19' 18.269 N 148° 43' 0.635 W 11 3,404.16 0.23 327.40 3,404.14 2.67 1.70 5,968,913.70 658,258.64 70° 19' 18.270 N 148° 43' 0.636 W 3,416.96 0.23 327.41 3,416.94 2.71 1.67 5,968,913.74 658,258.62 70° 19' 18.270 N 148° 43' 0.637 W I 3,429.66 0.23 329.31 3,429.64 2.75 1.65 5,968,913.79 658,258.59 70° 19' 18.271 N 148° 43' 0.638 W 3,442.46 0.23 335.32 3,442.44 2.80 1.62 5,968,913.83 658,258.56 70° 19' 18.271 N 148° 43' 0.638 W 3,455.16 0.20 345.24 3,455.14 2.84 1.61 5,968,913.88 658,258.55 70° 19' 18.272 N 148° 43' 0.639 W 3,467.96 0.18 333.60 3,467.94 2.88 1.59 5,968,913.92 658,258.53 70° 19' 18.272 N 148° 43' 0.639 W 3,480.76 0.22 316.45 3,480.74 2.92 1.57 5,968,913.95 658,258.50 70° 19' 18.272 N 148° 43' 0.640 W 3,493.56 0.25 315.72 3,493.54 2.96 1.53 5,968,913.99 658,258.47 70° 19' 18.273 N 148° 43' 0.641 W 3,506.26 0.23 315.57 3,506.24 2.99 1.49 5,968,914.03 658,258.43 70° 19' 18.273 N 148° 43' 0.642 W 3,519.06 0.23 317.89 3,519.04 3.03 1.46 5,968,914.06 658,258.39 70° 19' 18.273 N 148° 43' 0.643 W 3,531.76 0.25 319.23 3,531.74 3.07 1.42 5,968,914.10 658,258.36 70° 19' 18.274 N 148° 43' 0.644 W 3,544.56 0.23 316.79 3,544.54 3.11 1.39 5,968,914.14 658,258.32 70° 19' 18.274 N 148° 43' 0.645 W 3,557.36 0.20 315.60 3,557.34 3.15 1.35 5,968,914.17 658,258.29 70° 19' 18.275 N 148° 43' 0.646 W 8/19/2010 2:21:59PM Page 7 COMPASS 2003.16 Build 71 BPPASSPORT Survey Report - Geographic Company: North America - ALASKA - BP Local Co- ordinate Reference: Well G -23 Project: Prudhoe Bay TVD Reference: G -23B @ 62.66ft (Doyon 141) Site: PB G Pad MD Reference: G -23B @ 62.66ft (Doyon 141) Well: G -23 North Reference: True Wellbore: G -23B Survey Calculation Method: Minimum Curvature Design: G -23B Database: EDM .16 - Anc Prod - WH24P i Survey Measured Vertical Map Map Depth Inclination Azimuth Depth +N / -S +E / -W Northing Easting (ft) (°) ( (ft) (ft) (ft) (ft) (ft) Latitude Longitude 3,570.16 0.20 317.53 3,570.14 3.18 1.32 5,968,914.21 658,258.26 70° 19' 18.275 N 148° 43' 0.647 W 3,582.96 0.18 331.48 3,582.94 3.21 1.30 5,968,914.24 658,258.23 70° 19' 18.275 N 148° 43' 0.648 W I 3,595.76 0.15 320.39 3,595.74 3.24 1.28 5,968,914.27 658,258.21 70° 19' 18.276 N 148° 43' 0.648 W 3,608.46 0.17 297.62 3,608.44 3.27 1.25 5,968,914.29 658,258.18 70° 19' 18.276 N 148° 43' 0.649 W 3,621.26 0.18 295.02 3,621.24 3.28 1.22 5,968,914.31 658,258.15 70° 19' 18.276 N 148° 43' 0.650 W 3,633.86 0.17 292.08 3,633.84 3.30 1.18 5,968,914.32 658,258.11 70° 19' 18.276 N 148° 43' 0.651 W 3,646.36 0.15 291.87 3,646.34 3.31 1.15 5,968,914.33 658,258.08 70° 19' 18.276 N 148° 43' 0.652 W 3,658.96 0.15 293.36 3,658.94 3.32 1.12 5,968,914.35 658,258.05 70° 19' 18.276 N 148° 43' 0.653 W 3,671.56 0.15 297.69 3,671.54 3.34 1.09 5,968,914.36 658,258.02 70° 19' 18.276 N 148° 43' 0.654 W 1 3,684.36 0.17 302.77 3,684.34 3.36 1.06 5,968,914.38 658,257.99 70° 19' 18.277 N 148° 43' 0.655 W 3,697.06 0.17 304.28 3,697.04 3.38 1.03 5,968,914.40 658,257.95 70° 19' 18.277 N 148° 43' 0.656 W 3,709.56 0.17 309.06 3,709.54 3.40 1.00 5,968,914.42 658,257.92 70° 19' 18.277 N 148° 43' 0.657 W 3,722.16 0.17 315.23 3,722.14 3.42 0.97 5,968,914.44 658,257.90 70° 19' 18.277 N 148° 43' 0.657 W 3,734.76 0.15 325.89 3,734.74 3.45 0.95 5,968,914.47 658,257.87 70° 19' 18.278 N 148° 43' 0.658 W 3,747.36 0.08 23.18 3,747.34 3.47 0.94 5,968,914.49 658,257.87 70° 19' 18.278 N 148° 43' 0.658 W 3,759.96 0.05 146.73 3,759.94 3.48 0.95 5,968,914.50 658,257.87 70° 19' 18.278 N 148° 43' 0.658 W 3,772.56 0.08 194.57 3,772.54 3.46 0.95 5,968,914.48 658,257.87 70° 19' 18.278 N 148° 43' 0.658 W 3,785.16 0.07 182.30 3,785.14 3.45 0.94 5,968,914.47 658,257.87 70° 19' 18.278 N 148° 43' 0.658 W 1 3,797.76 0.10 218.24 3,797.74 3.43 0.94 5,968,914.45 658,257.86 70° 19' 18.277 N 148° 43' 0.658 W 3,810.26 0.12 246.79 3,810.24 3.42 0.92 5,968,914.44 658,257.85 70° 19' 18.277 N 148° 43' 0.659 W 3,822.86 0.15 263.34 3,822.84 3.41 0.89 5,968,914.43 658,257.82 70° 19' 18.277 N 148° 43' 0.660 WI 3,835.46 0.15 271.39 3,835.44 3.41 0.86 5,968,914.43 658,257.79 70° 19' 18.277 N 148° 43' 0.661 WI 3,848.06 0.15 275.96 3,848.04 3.41 0.82 5,968,914.43 658,257.75 70° 19' 18.277 N 148° 43' 0.662 WI 3,860.66 0.17 285.92 3,860.64 3.42 0.79 5,968,914.43 658,257.72 70° 19' 18.277 N 148° 43' 0.663 W 3,873.36 0.17 298.94 3,873.33 3.43 0.76 5,968,914.45 658,257.68 70° 19' 18.277 N 148° 43' 0.664 W j 3,885.96 0.17 309.62 3,885.93 3.45 0.72 5,968,914.47 658,257.65 70° 19' 18.278 N 148° 43' 0.665 W 3,898.46 0.17 316.64 3,898.43 3.48 0.70 5,968,914.49 658,257.62 70° 19' 18.278 N 148° 43' 0.665 W 3,911.06 0.17 324.74 3,911.03 3.51 0.67 5,968,914.52 658,257.60 70° 19' 18.278 N 148° 43' 0.666 W 3,923.66 0.15 331.26 3,923.63 3.54 0.66 5,968,914.55 658,257.58 70° 19' 18.278 N 148° 43' 0.667 W 3,936.26 0.15 330.66 3,936.23 3.57 0.64 5,968,914.58 658,257.56 70° 19' 18.279 N 148° 43' 0.667 W I 3,948.86 0.13 335.02 3,948.83 3.59 0.63 5,968,914.60 658,257.55 70° 19' 18.279 N 148° 43' 0.667 W 3,961.46 0.13 348.10 3,961.43 3.62 0.62 5,968,914.63 658,257.54 70° 19' 18.279 N 148° 43' 0.668 W 3,974.06 0.12 359.92 3,974.03 3.65 0.61 5,968,914.66 658,257.54 70° 19' 18.280 N 148° 43' 0.668 W 3,986.66 0.10 12.03 3,986.63 3.67 0.62 5,968,914.68 658,257.54 70° 19' 18.280 N 148° 43' 0.668 W 3,999.26 0.08 27.44 3,999.23 3.69 0.62 5,968,914.70 658,257.54 70° 19' 18.280 N 148° 43' 0.668 W 1 4,011.86 0.07 48.08 4,011.83 3.70 0.63 5,968,914.71 658,257.55 70° 19' 18.280 N 148° 43' 0.667 W 4,024.46 0.05 69.61 4,024.43 3.71 0.64 5,968,914.72 658,257.56 70° 19' 18.280 N 148° 43' 0.667 W i 4,037.06 0.05 75.40 4,037.03 3.71 0.65 5,968,914.73 658,257.57 70° 19' 18.280 N 148° 43' 0.667 W 4,049.66 0.07 70.58 4,049.63 3.72 0.67 5,968,914.73 658,257.59 70° 19' 18.280 N 148° 43' 0.666 W 4,062.26 0.05 80.74 4,062.23 3.72 0.68 5,968,914.73 658,257.60 70° 19' 18.280 N 148° 43' 0.666 W 4,074.86 0.02 101.50 4,074.83 3.72 0.69 5,968,914.73 658,257.61 70° 19' 18.280 N 148° 43' 0.666 W 4,087.46 0.02 112.18 4,087.43 3.72 0.69 5,968,914.73 658,257.61 70° 19' 18.280 N 148° 43' 0.666 W 4,100.06 0.02 110.04 4,100.03 3.72 0.69 5,968,914.73 658,257.62 70° 19' 18.280 N 148° 43' 0.665 W 4,112.66 0.02 99.37 4,112.63 3.72 0.70 5,968,914.73 658,257.62 70° 19' 18.280 N 148° 43' 0.665 W 4,125.26 0.02 92.23 4,125.23 3.72 0.70 5,968,914.73 658,257.62 70° 19' 18.280 N 148° 43' 0.665 W 4,137.86 0.02 104.29 4,137.83 3.72 0.71 5,968,914.73 658,257.63 70° 19' 18.280 N 148° 43' 0.665 W' 4,150.46 0.02 133.21 4,150.43 3.71 0.71 5,968,914.73 658,257.63 70° 19' 18.280 N 148° 43' 0.665 W 4,163.06 0.02 164.55 4,163.03 3.71 0.71 5,968,914.72 658,257.63 70° 19' 18.280 N 148° 43' 0.665 W 4,175.66 0.03 190.67 4,175.63 3.70 0.71 5,968,914.72 658,257.63 70° 19' 18.280 N 148° 43' 0.665 W 4,188.16 0.03 212.39 4,188.13 3.70 0.71 5,968,914.71 658,257.63 70° 19' 18.280 N 148° 43' 0.665 W 4,200.56 0.07 235.47 4,200.53 3.69 0.70 5,968,914.71 658,257.62 70° 19' 18.280 N 148° 43' 0.665 W 1 4,212.96 0.12 261.25 4,212.93 3.69 0.68 5,968,914.70 658,257.61 70° 19' 18.280 N 148° 43' 0.666 W 4,225.36 0.22 293.09 4,225.33 3.69 0.65 5,968,914.70 658,257.57 70° 19' 18.280 N 148° 43' 0.667 W 4,237.76 0.27 317.33 4,237.73 3.72 0.61 5,968,914.73 658,257.53 70° 19' 18.280 N 148° 43' 0.668 W 1 4,250.46 0.25 312.95 4,250.43 3.76 0.57 5,968,914.77 658,257.49 70° 19' 18.281 N 148° 43' 0.669 W 8/19/2010 2:21:59PM Page 8 COMPASS 2003.16 Build 71 • 0 BPPASSPORT Survey Report - Geographic Company: North America - ALASKA - BP Local Co- ordinate Reference: Well G - 23 Project: Prudhoe Bay TVD Reference: G -23B @ 62.66ft (Doyon 141) Site: PB G Pad MD Reference: G -23B @ 62.66ft (Doyon 141) Well: G - 23 North Reference: True Wellbore: G - 23B Survey Calculation Method: Minimum Curvature Design: G - 23B Database: EDM .16 - Anc Prod - WH24P Survey Measured Vertical Map Map i Depth Inclination Azimuth Depth +NI-S +E / -W Northing Easting (ft) ( °) ( °) (ft) (ft) (ft) (ft) (ft) Latitude Longitude 4,263.06 0.25 312.11 4,263.03 3.80 0.53 5,968,914.81 658,257.45 70° 19' 18.281 N 148° 43' 0.670 W 4,275.66 0.25 317.21 4,275.63 3.84 0.49 5,968,914.85 658,257.41 70° 19' 18.281 N 148° 43' 0.672 W 4,288.26 0.25 313.82 4,288.23 3.88 0.45 5,968,914.89 658,257.37 70° 19' 18.282 N 148° 43' 0.673 W 4,300.86 0.25 315.18 4,300.83 3.92 0.41 5,968,914.93 658,257.33 70° 19' 18.282 N 148° 43' 0.674 W 4,313.46 0.25 313.73 4,313.43 3.96 0.37 5,968,914.96 658,257.29 70° 19' 18.283 N 148° 43' 0.675 W 4,326.06 0.22 307.78 4,326.03 3.99 0.33 5,968,915.00 658,257.25 70° 19' 18.283 N 148° 43' 0.676 W 4,338.76 0.13 310.17 4,338.73 4.01 0.30 5,968,915.02 658,257.22 70° 19' 18.283 N 148° 43' 0.677 W j 4,351.36 0.08 359.87 4,351.33 4.03 0.29 5,968,915.04 658,257.20 70° 19' 18.283 N 148° 43' 0.677 W 4,363.96 0.10 42.81 4,363.93 4.05 0.30 5,968,915.05 658,257.21 70° 19' 18.283 N 148° 43' 0.677 W l 4,376.56 0.12 44.23 4,376.53 4.07 0.31 5,968,915.07 658,257.23 70° 19' 18.284 N 148° 43' 0.677 W 4,389.16 0.13 45.79 4,389.13 4.09 0.33 5,968,915.09 658,257.25 70° 19' 18.284 N 148° 43' 0.676 W j 4,401.76 0.15 38.44 4,401.73 4.11 0.35 5,968,915.12 658,257.27 70° 19' 18.284 N 148° 43' 0.675 W 4,414.36 0.20 2.90 4,414.33 4.14 0.37 5,968,915.15 658,257.28 70° 19' 18.284 N 148° 43' 0.675 W 4,427.06 0.25 335.71 4,427.03 4.19 0.35 5,968,915.20 658,257.27 70° 19' 18.285 N 148° 43' 0.675 W 4,439.66 0.25 335.48 4,439.63 4.24 0.33 5,968,915.25 658,257.24 70° 19' 18.285 N 148° 43' 0.676 W 4,452.06 0.25 329.98 4,452.03 4.29 0.31 5,968,915.29 658,257.22 70° 19' 18.286 N 148° 43' 0.677 W 4,464.56 0.25 327.02 4,464.53 4.34 0.28 5,968,915.34 658,257.19 70° 19' 18.286 N 148° 43' 0.678 W 4,476.96 0.25 325.68 4,476.93 4.38 0.25 5,968,915.38 658,257.16 70° 19' 18.287 N 148° 43' 0.678 W 4,489.36 0.25 321.64 4,489.33 4.42 0.22 5,968,915.43 658,257.12 70° 19' 18.287 N 148° 43' 0.679 W 4,501.76 0.23 317.37 4,501.73 4.46 0.18 5,968,915.47 658,257.09 70° 19' 18.288 N 148° 43' 0.680 W 4,514.26 0.20 317.28 4,514.23 4.50 0.15 5,968,915.50 658,257.06 70° 19' 18.288 N 148° 43' 0.681 W 4,526.66 0.13 351.24 4,526.63 4.53 0.13 5,968,915.53 658,257.04 70° 19' 18.288 N 148° 43' 0.682 W 4,539.06 0.08 17.81 4,539.03 4.55 0.14 5,968,915.55 658,257.04 70° 19' 18.288 N 148° 43' 0.682 W 4,551.56 0.08 16.32 4,551.53 4.57 0.14 5,968,915.57 658,257.04 70° 19' 18.289 N 148° 43' 0.682 W 4,564.46 0.08 23.13 4,564.43 4.58 0.15 5,968,915.59 658,257.05 70° 19' 18.289 N 148° 43' 0.681 W 4,577.36 0.08 31.37 4,577.33 4.60 0.15 5,968,915.60 658,257.06 70° 19' 18.289 N 148° 43' 0.681 W 4,590.16 0.12 40.51 4,590.13 4.62 0.17 5,968,915.62 658,257.07 70° 19' 18.289 N 148° 43' 0.681 W 4,603.06 0.12 46.67 4,603.03 4.64 0.19 5,968,915.64 658,257.09 70° 19' 18.289 N 148° 43' 0.680 W 4,615.86 0.12 50.36 4,615.83 4.65 0.21 5,968,915.66 658,257.11 70° 19' 18.289 N 148° 43' 0.680 W 4,628.76 0.13 52.62 4,628.73 4.67 0.23 5,968,915.68 658,257.13 70° 19' 18.290 N 148° 43' 0.679 W 4,641.56 0.15 53.02 4,641.53 4.69 0.25 5,968,915.70 658,257.15 70° 19' 18.290 N 148° 43' 0.678 W 4,654.36 0.17 53.28 4,654.33 4.71 0.28 5,968,915.72 658,257.18 70° 19' 18.290 N 148° 43' 0.678 W 4,667.16 0.17 55.47 4,667.13 4.73 0.31 5,968,915.74 658,257.21 70° 19' 18.290 N 148° 43' 0.677 W 4,679.96 0.15 57.83 4,679.93 4.75 0.34 5,968,915.76 658,257.24 70° 19' 18.290 N 148° 43' 0.676 W 4,692.76 0.15 60.22 4,692.73 4.77 0.37 5,968,915.78 658,257.27 70° 19' 18.291 N 148° 43' 0.675 W 4,705.56 0.17 63.64 4,705.53 4.79 0.40 5,968,915.80 658,257.30 70° 19' 18.291 N 148° 43' 0.674 W 4,718.36 0.17 66.70 4,718.33 4.80 0.44 5,968,915.81 658,257.34 70° 19' 18.291 N 148° 43' 0.673 W 4,731.16 0.15 71.61 4,731.13 4.82 0.47 5,968,915.83 658,257.37 70° 19' 18.291 N 148° 43' 0.672 W 4,743.96 0.17 76.89 4,743.93 4.83 0.51 5,968,915.84 658,257.40 70° 19' 18.291 N 148° 43' 0.671 W 4,756.86 0.18 77.40 4,756.83 4.84 0.54 5,968,915.85 658,257.44 70° 19' 18.291 N 148° 43' 0.670 W 4,769.66 0.18 74.56 4,769.63 4.85 0.58 5,968,915.86 658,257.48 70° 19' 18.291 N 148° 43' 0.669 W 4,782.36 0.17 71.77 4,782.33 4.86 0.62 5,968,915.87 658,257.52 70° 19' 18.291 N 148° 43' 0.668 W I 4,795.06 0.17 70.60 4,795.03 4.87 0.66 5,968,915.88 658,257.55 70° 19' 18.292 N 148° 43' 0.667 W 4,807.66 0.17 70.98 4,807.63 4.88 0.69 5,968,915.89 658,257.59 70° 19' 18.292 N 148° 43' 0.666 W 4,820.26 0.17 72.15 4,820.23 4.89 0.73 5,968,915.91 658,257.62 70° 19' 18.292 N 148° 43' 0.665 W 4,833.06 0.17 73.66 4,833.03 4.90 0.76 5,968,915.92 658,257.66 70° 19' 18.292 N 148° 43' 0.663 W 4,845.96 0.17 72.81 4,845.93 4.92 0.80 5,968,915.93 658,257.70 70° 19' 18.292 N 148° 43' 0.662 W 4,858.76 0.15 66.31 4,858.73 4.93 0.83 5,968,915.94 658,257.73 70° 19' 18.292 N 148° 43' 0.661 W 4,871.56 0.12 59.15 4,871.53 4.94 0.86 5,968,915.96 658,257.76 70° 19' 18.292 N 148° 43' 0.661 W 4,884.46 0.12 61.96 4,884.43 4.95 0.88 5,968,915.97 658,257.78 70° 19' 18.292 N 148° 43' 0.660 W 4,897.26 0.10 76.86 4,897.23 4.96 0.91 5,968,915.98 658,257.80 70° 19' 18.292 N 148° 43' 0.659 W 4,910.16 0.08 79.79 4,910.13 4.97 0.93 5,968,915.99 658,257.82 70° 19' 18.292 N 148° 43' 0.659 W 4,922.96 0.07 73.59 4,922.93 4.97 0.94 5,968,915.99 658,257.84 70° 19' 18.293 N 148° 43' 0.658 W 4,935.86 0.05 75.48 4,935.83 4.97 0.96 5,968,915.99 658,257.85 70° 19' 18.293 N 148° 43' 0.658 W 4,948.66 0.03 80.97 4,948.63 4.98 0.96 5,968,916.00 658,257.86 70° 19' 18.293 N 148° 43' 0.658 W 8/19/2010 2:21:59PM Page 9 COMPASS 2003.16 Build 71 • • • BPPASSPORT Survey Report - Geographic Company: North America - ALASKA - BP Local Co- ordinate Reference: Well G -23 Project: Prudhoe Bay TVD Reference: G -23B @ 62.66ft (Doyon 141) Site: PB G Pad MD Reference: G -23B @ 62.66ft (Doyon 141) Well: G -23 North Reference: True Wellbore: G -23B Survey Calculation Method: Minimum Curvature Design: G -23B Database: EDM .16 - Anc Prod - WH24P ' Survey Measured Vertical Map Map Depth Inclination Azimuth Depth +N / -S +E / -W Northing Easting (ft) ( °) ( °) (ft) (ft) (ft) (ft) (ft) Latitude Longitude 4,961.56 0.03 84.62 4,961.53 4.98 0.97 5,968,916.00 658,257.87 70° 19' 18.293 N 148° 43' 0.657 W 4,974.36 0.05 91.01 4,974.33 4.98 0.98 5,968,916.00 658,257.87 70° 19' 18.293 N 148° 43' 0.657 W 4,987.26 0.05 93.47 4,987.23 4.98 0.99 5,968,916.00 658,257.89 70° 19' 18.293 N 148° 43' 0.657 W 5,000.16 0.05 74.47 5,000.13 4.98 1.00 5,968,916.00 658,257.90 70° 19' 18.293 N 148° 43' 0.657 W 5,013.06 0.08 53.91 5,013.03 4.99 1.01 5,968,916.01 658,257.91 70° 19' 18.293 N 148° 43' 0.656 W 5,025.86 0.23 54.93 5,025.83 5.01 1.04 5,968,916.03 658,257.94 70° 19' 18.293 N 148° 43' 0.655 W 5,038.76 0.42 72.46 5,038.73 5.03 1.11 5,968,916.06 658,258.00 70° 19' 18.293 N 148° 43' 0.653 W 5,051.66 0.43 85.17 5,051.63 5.05 1.20 5,968,916.08 658,258.10 70° 19' 18.293 N 148° 43' 0.651 W 5,064.46 0.43 86.62 5,064.43 5.06 1.30 5,968,916.09 658,258.19 70° 19' 18.293 N 148° 43' 0.648 W 5,077.36 0.43 86.34 5,077.33 5.07 1.39 5,968,916.09 658,258.29 70° 19' 18.293 N 148° 43' 0.645 W 5,090.26 0.42 86.48 5,090.23 5.07 1.49 5,968,916.10 658,258.38 70° 19' 18.294 N 148° 43' 0.642 W 5,103.16 0.43 85.79 5,103.13 5.08 1.59 5,968,916.11 658,258.48 70° 19' 18.294 N 148° 43' 0.639 W 5,116.06 0.42 85.12 5,116.03 5.09 1.68 5,968,916.12 658,258.57 70° 19' 18.294 N 148° 43' 0.637 W 5,128.96 0.40 83.76 5,128.93 5.09 1.77 5,968,916.13 658,258.66 70° 19' 18.294 N 148° 43' 0.634 W 5,141.86 0.42 81.74 5,141.83 5.11 1.86 5,968,916.14 658,258.76 70° 19' 18.294 N 148° 43' 0.631 W 5,154.76 0.43 80.96 5,154.73 5.12 1.96 5,968,916.16 658,258.85 70° 19' 18.294 N 148° 43' 0.629 W 5,167.66 0.43 79.55 5,167.63 5.14 2.05 5,968,916.18 658,258.95 70° 19' 18.294 N 148° 43' 0.626 W 5,180.36 0.45 77.09 5,180.33 5.16 2.15 5,968,916.20 658,259.04 70° 19' 18.294 N 148° 43' 0.623 W 5,193.06 0.45 76.34 5,193.03 5.18 2.25 5,968,916.23 658,259.14 70° 19' 18.295 N 148° 43' 0.620 W 5,205.66 0.45 74.05 5,205.63 5.20 2.34 5,968,916.25 658,259.23 70° 19' 18.295 N 148° 43' 0.617 W 5,218.26 0.47 72.03 5,218.23 5.23 2.44 5,968,916.28 658,259.33 70° 19' 18.295 N 148° 43' 0.615 W 5,230.96 0.47 71.78 5,230.93 5.27 2.54 5,968,916.32 658,259.43 70° 19' 18.295 N 148° 43' 0.612 W 5,243.66 0.48 69.51 5,243.62 5.30 2.64 5,968,916.36 658,259.53 70° 19' 18.296 N 148° 43' 0.609 W 5,256.26 0.50 66.65 5,256.22 5.34 2.74 5,968,916.40 658,259.62 70° 19' 18.296 N 148° 43' 0.606 W 5,268.96 0.52 64.30 5,268.92 5.39 2.84 5,968,916.45 658,259.73 70° 19' 18.297 N 148° 43' 0.603 W 5,281.56 0.53 61.98 5,281.52 5.44 2.94 5,968,916.50 658,259.83 70° 19' 18.297 N 148° 43' 0.600 W 5,294.26 0.55 58.87 5,294.22 5.50 3.05 5,968,916.56 658,259.93 70° 19' 18.298 N 148° 43' 0.597 W 5,306.86 0.60 55.04 5,306.82 5.57 3.15 5,968,916.63 658,260.03 70° 19' 18.298 N 148° 43' 0.594 W 5,319.56 0.68 51.08 5,319.52 5.65 3.27 5,968,916.72 658,260.15 70° 19' 18.299 N 148° 43' 0.590 W 5,332.16 0.77 48.12 5,332.12 5.76 3.39 5,968,916.83 658,260.27 70° 19' 18.300 N 148° 43' 0.587 W 5,344.66 0.83 45.55 5,344.62 5.88 3.51 5,968,916.95 658,260.39 70° 19' 18.301 N 148° 43' 0.583 W 5,357.16 0.92 42.22 5,357.12 6.02 3.65 5,968,917.09 658,260.52 70° 19' 18.303 N 148° 43' 0.579 W 5,369.86 1.00 39.60 5,369.82 6.18 3.79 5,968,917.25 658,260.65 70° 19' 18.304 N 148° 43' 0.575 W 5,382.76 1.08 38.19 5,382.71 6.36 3.93 5,968,917.44 658,260.80 70° 19' 18.306 N 148° 43' 0.571 W 5,395.86 1.17 36.68 5,395.81 6.56 4.09 5,968,917.65 658,260.95 70° 19' 18.308 N 148° 43' 0.566 W 5,408.86 1.23 35.69 5,408.81 6.78 4.25 5,968,917.87 658,261.11 70° 19' 18.310 N 148° 43' 0.562 W 5,421.86 1.28 35.44 5,421.81 7.01 4.42 5,968,918.11 658,261.27 70° 19' 18.313 N 148° 43' 0.557 W 5,434.96 1.33 35.15 5,434.90 7.26 4.59 5,968,918.35 658,261.43 70° 19' 18.315 N 148° 43' 0.552 W 5,447.96 1.37 34.70 5,447.90 7.51 4.76 5,968,918.61 658,261.60 70° 19' 18.317 N 148° 43' 0.547 W 5,461.06 1.40 33.93 5,460.99 7.77 4.94 5,968,918.87 658,261.78 70° 19' 18.320 N 148° 43' 0.542 W 5,474.06 1.43 32.93 5,473.99 8.04 5.12 5,968,919.14 658,261.95 70° 19' 18.323 N 148° 43' 0.536 W 5,487.06 1.47 32.65 5,486.99 8.31 5.30 5,968,919.42 658,262.12 70° 19' 18.325 N 148° 43' 0.531 W 5,500.16 1.47 32.55 5,500.08 8.60 5.48 5,968,919.71 658,262.29 70° 19' 18.328 N 148° 43' 0.526 W 5,513.16 1.48 32.40 5,513.08 8.88 5.66 5,968,920.00 658,262.47 70° 19' 18.331 N 148° 43' 0.521 W 5,526.16 1.50 32.36 5,526.07 9.17 5.84 5,968,920.29 658,262.64 70° 19' 18.334 N 148° 43' 0.515 W 5,539.26 1.52 31.73 5,539.17 9.46 6.02 5,968,920.58 658,262.82 70° 19' 18.337 N 148° 43' 0.510 W 5,552.26 1.57 31.42 5,552.16 9.76 6.20 5,968,920.89 658,263.00 70° 19' 18.340 N 148° 43' 0.505 W 5,565.26 1.62 30.51 5,565.16 10.07 6.39 5,968,921.20 658,263.18 70° 19' 18.343 N 148° 43' 0.499 W 5,578.36 1.68 28.86 5,578.25 10.40 6.58 5,968,921.53 658,263.36 70° 19' 18.346 N 148° 43' 0.494 W 5,591.36 1.73 27.04 5,591.25 10.74 6.76 5,968,921.88 658,263.53 70° 19' 18.349 N 148° 43' 0.488 W 5,604.36 1.80 25.13 5,604.24 11.10 6.93 5,968,922.24 658,263.70 70° 19' 18.353 N 148° 43' 0.483 W 5,617.46 1.85 23.91 5,617.33 11.48 7.11 5,968,922.62 658,263.86 70° 19' 18.357 N 148° 43' 0.478 W 5,630.46 1.90 22.72 5,630.33 11.87 7.28 5,968,923.02 658,264.02 70° 19' 18.360 N 148° 43' 0.473 W 5,643.46 1.95 21.41 5,643.32 12.27 7.44 5,968,923.42 658,264.18 70° 19' 18.364 N 148° 43' 0.469 W 5,656.46 1.98 20.91 5,656.31 12.69 7.60 5,968,923.84 658,264.33 70° 19' 18.368 N 148° 43' 0.464 W 8/19/2010 2:21:59PM Page 10 COMPASS 2003.16 Build 71 • BPPASSPORT Survey Report - Geographic Company: North America - ALASKA - BP Local Co- ordinate Reference: Well G - 23 Project: Prudhoe Bay TVD Reference: G -23B @ 62.66ft (Doyon 141) Site: PB G Pad MD Reference: G -23B @ 62.66ft (Doyon 141) Well: G - 23 North Reference: True Wellbore: G - 23B Survey Calculation Method: Minimum Curvature Design: G - 23B Database: EDM .16 - Anc Prod - WH24P Survey Measured Vertical Map Map Depth Inclination Azimuth Depth +N / -S +E / -W Northing Easting (ft) (0) (°) (ft) (ft) (ft) (ft) (ft) Latitude Longitude 5,669.56 2.02 20.18 5,669.41 13.12 7.76 5,968,924.27 658,264.48 70° 19' 18.373 N 148° 43' 0.459 W 5,682.56 2.05 18.80 5,682.40 13.55 7.92 5,968,924.71 658,264.63 70° 19' 18.377 N 148° 43' 0.455 W 5,695.56 2.08 17.86 5,695.39 13.99 8.06 5,968,925.16 658,264.77 70° 19' 18.381 N 148° 43' 0.450 W 5,708.56 2.13 17.41 5,708.38 14.45 8.21 5,968,925.62 658,264.90 70° 19' 18.386 N 148° 43' 0.446 W I 5,721.56 2.18 17.27 5,721.37 14.92 8.35 5,968,926.09 658,265.04 70° 19' 18.390 N 148° 43' 0.442 W 5,734.66 2.22 16.85 5,734.46 15.40 8.50 5,968,926.57 658,265.17 70° 19' 18.395 N 148° 43' 0.438 W 5,747.66 2.23 16.52 5,747.45 15.88 8.65 5,968,927.06 658,265.31 70° 19' 18.400 N 148° 43' 0.433 W 5,760.66 2.25 16.15 5,760.44 16.37 8.79 5,968,927.55 658,265.44 70° 19' 18.405 N 148 43' 0.429 W 5,773.66 2.27 16.07 5,773.43 16.86 8.93 5,968,928.04 658,265.57 70° 19' 18.409 N 148° 43' 0.425 W 5,786.66 2.28 16.14 5,786.42 17.36 9.07 5,968,928.54 658,265.71 70° 19' 18.414 N 148° 43' 0.421 W 5,799.66 2.28 15.99 5,799.41 17.85 9.22 5,968,929.04 658,265.84 70° 19' 18.419 N 148° 43' 0.417 W 5,812.76 2.27 15.57 5,812.50 18.35 9.36 5,968,929.55 658,265.97 70° 19' 18.424 N 148° 43' 0.413 W 5,825.76 2.23 14.61 5,825.49 18.85 9.49 5,968,930.04 658,266.09 70° 19' 18.429 N 148° 43' 0.409 W 5,838.76 2.20 13.90 5,838.48 19.33 9.61 5,968,930.53 658,266.20 70° 19' 18.434 N 148° 43' 0.405 W 5,851.86 2.18 13.65 5,851.57 19.82 9.73 5,968,931.02 658,266.31 70° 19' 18.439 N 148° 43' 0.402 W 5,864.86 2.15 13.31 5,864.56 20.30 9.85 5,968,931.50 658,266.42 70° 19' 18.443 N 148° 43' 0.398 W 5,877.96 2.08 13.35 5,877.65 20.77 9.96 5,968,931.97 658,266.52 70° 19' 18.448 N 148° 43' 0.395 W 5,891.06 1.95 14.90 5,890.74 21.21 10.07 5,968,932.42 658,266.62 70° 19' 18.452 N 148° 43' 0.392 W 5,903.86 1.83 15.96 5,903.54 21.62 10.18 5,968,932.83 658,266.73 70° 19' 18.456 N 148° 43' 0.389 W 5,916.46 1.77 15.66 5,916.13 22.00 10.29 5,968,933.21 658,266.83 70° 19' 18.460 N 148° 43' 0.385 W 5,929.06 1.70 15.16 5,928.73 22.37 10.39 5,968,933.58 658,266.92 70° 19' 18.464 N 148° 43' 0.382 W 5,941.66 1.63 15.38 5,941.32 22.72 10.49 5,968,933.94 658,267.01 70° 19' 18.467 N 148° 43' 0.380 W 5,954.36 1.53 14.61 5,954.02 23.06 10.58 5,968,934.28 658,267.09 70° 19' 18.470 N 148° 43' 0.377 W 5,967.16 1.45 14.22 5,966.81 23.38 10.66 5,968,934.60 658,267.17 70° 19' 18.474 N 148° 43' 0.375 W 5,979.96 1.37 15.24 5,979.61 23.69 10.74 5,968,934.91 658,267.24 70° 19' 18.477 N 148° 43' 0.372 W 5,992.76 1.28 14.86 5,992.40 23.97 10.82 5,968,935.20 658,267.31 70° 19' 18.479 N 148° 43' 0.370 W 6,005.56 1.22 14.70 6,005.20 24.24 10.89 5,968,935.47 658,267.38 70° 19' 18.482 N 148° 43' 0.368 W 6,018.36 1.18 14.94 6,018.00 24.50 10.96 5,968,935.73 658,267.44 70° 19' 18.485 N 148° 43' 0.366 W 6,031.16 1.22 16.59 6,030.80 24.76 11.03 5,968,935.99 658,267.51 70° 19' 18.487 N 148° 43' 0.364 W 6,043.96 1.23 15.23 6,043.59 25.02 11.11 5,968,936.25 658,267.58 70° 19' 18.490 N 148° 43' 0.362 W 6,056.76 1.12 13.81 6,056.39 25.28 11.17 5,968,936.51 658,267.64 70° 19' 18.492 N 148° 43' 0.360 W 6,069.56 1.00 13.34 6,069.19 25.51 11.23 5,968,936.74 658,267.69 70° 19' 18.495 N 148° 43' 0.358 W 6,082.16 0.95 11.32 6,081.79 25.72 11.28 5,968,936.95 658,267.73 70° 19' 18.497 N 148° 43' 0.357 W 6,094.76 0.95 11.79 6,094.38 25.92 11.32 5,968,937.15 658,267.77 70° 19' 18.499 N 148° 43' 0.355 W 6,107.36 0.93 12.56 6,106.98 26.12 11.36 5,968,937.36 658,267.81 70° 19' 18.501 N 148° 43' 0.354 W 6,119.86 0.88 13.65 6,119.48 26.32 11.41 5,968,937.55 658,267.85 70° 19' 18.502 N 148° 43' 0.353 W 6,132.36 0.83 14.57 6,131.98 26.50 11.45 5,968,937.73 658,267.89 70° 19' 18.504 N 148° 43' 0.352 W 6,145.06 0.80 14.21 6,144.68 26.67 11.50 5,968,937.91 658,267.93 70° 19' 18.506 N 148° 43' 0.350 W 6,157.86 0.77 12.69 6,157.48 26.84 11.54 5,968,938.08 658,267.97 70° 19' 18.508 N 148° 43' 0.349 W 6,170.56 0.72 12.32 6,170.18 27.00 11.57 5,968,938.24 658,268.00 70° 19' 18.509 N 148° 43' 0.348 W 6,183.36 0.65 11.80 6,182.97 27.15 11.60 5,968,938.39 658,268.03 70° 19' 18.511 N 148° 43' 0.347 W 6,196.06 0.60 11.48 6,195.67 27.29 11.63 5,968,938.53 658,268.05 70° 19' 18.512 N 148° 43' 0.346 W 6,208.86 0.57 12.18 6,208.47 27.42 11.66 5,968,938.66 658,268.08 70° 19' 18.513 N 148° 43' 0.345 W 6,221.66 0.55 12.23 6,221.27 27.54 11.69 5,968,938.78 658,268.10 70° 19' 18.515 N 148° 43' 0.345 W 6,234.36 0.53 12.44 6,233.97 27.66 11.71 5,968,938.90 658,268.12 70° 19' 18.516 N 148° 43' 0.344 W 6,247.06 0.52 11.75 6,246.67 27.77 11.74 5,968,939.01 658,268.15 70° 19' 18.517 N 148° 43' 0.343 W 6,259.76 0.47 11.78 6,259.37 27.88 11.76 5,968,939.12 658,268.17 70° 19' 18.518 N 148° 43' 0.343 W 6,272.56 0.43 12.32 6,272.17 27.98 11.78 5,968,939.22 658,268.19 70° 19' 18.519 N 148° 43' 0.342 W 6,285.26 0.38 11.56 6,284.87 28.06 11.80 5,968,939.31 658,268.20 70° 19' 18.520 N 148° 43' 0.341 W 6,297.76 0.35 11.22 6,297.37 28.14 11.81 5,968,939.38 658,268.22 70° 19' 18.520 N 148° 43' 0.341 W 6,310.36 0.32 9.04 6,309.97 28.22 11.83 5,968,939.46 658,268.23 70° 19' 18.521 N 148° 43' 0.341 W 6,322.86 0.27 4.29 6,322.47 28.28 11.83 5,968,939.52 658,268.23 70° 19' 18.522 N 148° 43' 0.340 W 6,335.36 0.25 4.82 6,334.97 28.34 11.84 5,968,939.58 658,268.24 70° 19' 18.522 N 148° 43' 0.340 W 6,347.86 0.32 15.59 6,347.47 28.40 11.85 5,968,939.64 658,268.25 70° 19' 18.523 N 148° 43' 0.340 W 6,360.36 0.35 9.43 6,359.97 28.47 11.87 5,968,939.71 658,268.26 70° 19' 18.524 N 148° 43' 0.339 W 8/19/2010 2:21:59PM Page 11 COMPASS 2003.16 Build 71 • • BPPASSPORT Survey Report - Geographic Company: North America - ALASKA - BP Local Co- ordinate Reference: Well G -23 Project: Prudhoe Bay ND Reference: G -23B @ 62.66ft (Doyon 141) Site: PB G Pad MD Reference: G -23B @ 62.66ft (Doyon 141) Well: G -23 North Reference: True Wellbore: G -23B Survey Calculation Method: Minimum Curvature Design: G -23B Database: EDM .16 - Anc Prod - WH24P 1 Survey Measured Vertical Map Map Depth Inclination Azimuth Depth +N / -S +E / -W Northing Easting (ft) ( °) ( °) (ft) (ft) (ft) (ft) (ft) Latitude Longitude 6,373.06 0.28 359.04 6,372.67 28.54 11.87 5,968,939.78 658,268.27 70° 19' 18.524 N 148° 43' 0.339 W I 6,385.76 0.27 1.20 6,385.37 28.60 11.87 5,968,939.84 658,268.27 70° 19' 18.525 N 148° 43' 0.339 W 6,398.46 0.27 358.82 6,398.07 28.66 11.87 5,968,939.90 658,268.26 70° 19' 18.525 N 148° 43' 0.339 W I 1 6,411.26 0.25 358.24 6,410.87 28.72 11.87 5,968,939.96 658,268.26 70° 19' 18.526 N 148° 43' 0.339 W j 6,423.96 0.22 359.11 6,423.57 28.77 11.87 5,968,940.01 658,268.26 70° 19' 18.527 N 148° 43' 0.339 W I 6,436.66 0.20 358.23 6,436.27 28.81 11.87 5,968,940.06 658,268.26 70° 19' 18.527 N 148° 43' 0.339 W 6,449.46 0.15 355.49 6,449.07 28.85 11.87 5,968,940.10 658,268.25 70° 19' 18.527 N 148° 43' 0.339 W 6,462.16 0.15 319.57 6,461.77 28.88 11.85 5,968,940.12 658,268.24 70° 19' 18.528 N 148° 43' 0.340 W 6,474.96 0.17 257.56 6,474.57 28.89 11.82 5,968,940.13 658,268.21 70° 19' 18.528 N 148° 43' 0.341 W 6,487.66 0.13 228.15 6,487.27 28.88 11.80 5,968,940.12 658,268.18 70° 19' 18.528 N 148° 43' 0.341 W 6,500.46 0.15 226.23 6,500.07 28.86 11.77 5,968,940.10 658,268.16 70° 19' 18.527 N 148° 43' 0.342 W 6,513.06 0.15 227.38 6,512.67 28.83 11.75 5,968,940.07 658,268.14 70° 19' 18.527 N 148° 43' 0.343 W 6,525.66 0.15 220.90 6,525.27 28.81 11.73 5,968,940.05 658,268.11 70° 19' 18.527 N 148° 43' 0.344 W 6,538.16 0.15 207.21 6,537.77 28.78 11.71 5,968,940.02 658,268.10 70° 19' 18.527 N 148° 43' 0.344 W I 6,550.76 0.15 198.72 6,550.37 28.75 11.69 5,968,939.99 658,268.09 70° 19' 18.526 N 148° 43' 0.344 W 6,563.36 0.17 202.06 6,562.97 28.72 11.68 5,968,939.96 658,268.07 70° 19' 18.526 N 148° 43' 0.345 W 6,575.96 0.20 214.48 6,575.57 28.68 11.66 5,968,939.92 658,268.05 70° 19' 18.526 N 148° 43' 0.345 W I 6,588.66 0.25 230.32 6,588.27 28.65 11.63 5,968,939.89 658,268.02 70° 19' 18.525 N 148° 43' 0.346 W 6,601.46 0.27 241.55 6,601.07 28.62 11.58 5,968,939.85 658,267.97 70° 19' 18.525 N 148° 43' 0.348 W i 1 6,614.16 0.27 243.18 6,613.77 28.59 11.53 5,968,939.82 658,267.92 70° 19' 18.525 N 148° 43' 0.349 W 6,626.66 0.28 242.26 6,626.27 28.56 11.47 5,968,939.79 658,267.87 70° 19' 18.525 N 148° 43' 0.351 W 6,639.26 0.32 241.54 6,638.87 28.53 11.42 5,968,939.76 658,267.81 70° 19' 18.524 N 148° 43' 0.353 W 6,651.76 0.32 238.68 6,651.37 28.50 11.36 5,968,939.73 658,267.75 70° 19' 18.524 N 148° 43' 0.354 W 6,664.36 0.32 230.35 6,663.97 28.45 11.30 5,968,939.68 658,267.70 70° 19' 18.523 N 148° 43' 0.356 W 6,676.86 0.37 225.26 6,676.47 28.40 11.24 5,968,939.63 658,267.64 70° 19' 18.523 N 148° 43' 0.358 W I 6,689.46 0.38 226.19 6,689.07 28.35 11.18 5,968,939.57 658,267.58 70° 19' 18.522 N 148° 43' 0.359 W I 6,701.96 0.38 222.46 6,701.57 28.29 11.13 5,968,939.51 658,267.53 70° 19' 18.522 N 148° 43' 0.361 W 6,714.56 0.40 218.20 6,714.17 28.22 11.07 5,968,939.45 658,267.47 70° 19' 18.521 N 148° 43' 0.363 W 6,727.06 0.42 216.48 6,726.67 28.15 11.02 5,968,939.37 658,267.42 70° 19' 18.521 N 148° 43' 0.364 W I 6,739.46 0.43 213.77 6,739.07 28.08 10.96 5,968,939.30 658,267.37 70° 19' 18.520 N 148° 43' 0.366 W 6,751.76 0.45 211.81 6,751.36 28.00 10.91 5,968,939.22 658,267.32 70° 19' 18.519 N 148° 43' 0.367 W j 6,764.06 0.45 210.41 6,763.66 27.91 10.86 5,968,939.13 658,267.27 70° 19' 18.518 N 148° 43' 0.369 W 6,776.46 0.47 207.04 6,776.06 27.83 10.82 5,968,939.05 658,267.23 70° 19' 18.517 N 148° 43' 0.370 W 6,788.76 0.50 206.64 6,788.36 27.73 10.77 5,968,938.95 658,267.18 70° 19' 18.516 N 148° 43' 0.371 W 6,801.06 0.52 208.37 6,800.66 27.64 10.72 5,968,938.85 658,267.13 70° 19' 18.515 N 148° 43' 0.373 W 6,813.56 0.52 207.89 6,813.16 27.54 10.66 5,968,938.75 658,267.08 70° 19' 18.514 N 148° 43' 0.375 W 6,826.16 0.53 207.62 6,825.76 27.43 10.61 5,968,938.65 658,267.03 70° 19' 18.513 N 148° 43' 0.376 WI ! 6,838.66 0.55 207.68 6,838.26 27.33 10.56 5,968,938.54 658,266.98 70° 19' 18.512 N 148° 43' 0.378 W 6,851.26 0.58 206.84 6,850.86 27.22 10.50 5,968,938.43 658,266.92 70° 19' 18.511 N 148° 43' 0.379 W 6,863.76 0.60 205.79 6,863.36 27.10 10.44 5,968,938.32 658,266.87 70° 19' 18.510 N 148° 43' 0.381 W 6,876.36 0.62 204.15 6,875.96 26.98 10.39 5,968,938.19 658,266.81 70° 19' 18.509 N 148° 43' 0.383 W 6,888.86 0.65 202.82 6,888.46 26.85 10.33 5,968,938.06 658,266.76 70° 19' 18.508 N 148° 43' 0.384 W I 6,901.46 0.68 201.56 6,901.06 26.72 10.27 5,968,937.93 658,266.71 70° 19' 18.506 N 148° 43' 0.386 W 6,913.96 0.73 198.51 6,913.56 26.57 10.22 5,968,937.78 658,266.66 70° 19' 18.505 N 148° 43' 0.387 W 6,926.56 0.82 193.74 6,926.16 26.41 10.18 5,968,937.62 658,266.62 70° 19' 18.503 N 148° 43' 0.389 W j 6,939.06 0.93 188.52 6,938.65 26.22 10.14 5,968,937.43 658,266.58 70° 19' 18.502 N 148° 43' 0.390 W 6,951.46 1.07 183.59 6,951.05 26.01 10.12 5,968,937.21 658,266.57 70° 19' 18.499 N 148° 43' 0.390 W 6,963.76 1.22 177.90 6,963.35 25.76 10.11 5,968,936.97 658,266.57 70° 19' 18.497 N 148° 43' 0.391 W 6,976.16 1.42 171.78 6,975.75 25.48 10.14 5,968,936.69 658,266.60 70° 19' 18.494 N 148° 43' 0.390 W 6,988.46 1.63 166.87 6,988.04 25.16 10.20 5,968,936.37 658,266.67 70° 19' 18.491 N 148° 43' 0.388 W 7,000.76 1.90 162.78 7,000.34 24.79 10.30 5,968,936.00 658,266.78 70° 19' 18.487 N 148° 43' 0.385 W j 7,013.16 2.18 158.94 7,012.73 24.38 10.45 5,968,935.59 658,266.93 70° 19' 18.483 N 148° 43' 0.381 W j 7,025.46 2.47 155.87 7,025.02 23.92 10.64 5,968,935.13 658,267.13 70° 19' 18.479 N 148° 43' 0.375 W j 7,038.06 2.78 153.62 7,037.61 23.39 10.89 5,968,934.62 658,267.39 70° 19' 18.474 N 148° 43' 0.368 W 7,050.56 3.12 151.93 7,050.09 22.82 11.18 5,968,934.05 658,267.70 70° 19' 18.468 N 148° 43' 0.359 W 8/19/2010 2:21:59PM Page 12 COMPASS 2003.16 Build 71 BPPASSPORT Survey Report - Geographic Company: North America - ALASKA - BP Local Co- ordinate Reference: Well G - 23 Project: Prudhoe Bay ND Reference: G -23B @ 62.66ft (Doyon 141) Site: PB G Pad MD Reference: G -23B @ 62.66ft (Doyon 141) Well: G - 23 North Reference: True Wellbore: G - 23B Survey Calculation Method: Minimum Curvature Design: G - 23B Database: EDM .16 - Anc Prod - WH24P ' Survey Measured Vertical Map Map Depth Inclination Azimuth Depth +N / -S +E / -W Northing Easting (ft) ( °) ( °) (ft) (ft) (ft) (ft) (ft) Latitude Longitude 7,063.16 3.47 150.64 7,062.67 22.19 11.53 5,968,933.42 658,268.06 70° 19' 18.462 N 148° 43' 0.349 W 7,075.66 3.80 149.64 7,075.14 21.50 11.93 5,968,932.75 658,268.47 70° 19' 18.455 N 148° 43' 0.338 W 7,088.16 4.17 148.99 7,087.61 20.75 12.37 5,968,932.01 658,268.93 70° 19' 18.448 N 148° 43' 0.325 W 7,100.76 4.52 149.00 7,100.18 19.94 12.86 5,968,931.20 658,269.44 70° 19' 18.440 N 148° 43' 0.310 W 7,113.26 4.88 149.37 7,112.63 19.06 13.39 5,968,930.33 658,269.98 70° 19' 18.431 N 148° 43' 0.295 W 7,125.76 5.28 149.87 7,125.08 18.10 13.94 5,968,929.39 658,270.56 70° 19' 18.422 N 148° 43' 0.279 W 7,138.16 5.68 150.61 7,137.43 17.07 14.53 5,968,928.37 658,271.17 70° 19' 18.412 N 148° 43' 0.262 W 7,150.76 6.00 151.54 7,149.96 15.95 15.15 5,968,927.27 658,271.81 70° 19' 18.401 N 148° 43' 0.244 W 7,163.26 6.25 152.54 7,162.39 14.77 15.78 5,968,926.10 658,272.46 70° 19' 18.389 N 148° 43' 0.225 W 7,175.56 6.47 153.41 7,174.62 13.56 16.40 5,968,924.90 658,273.11 70° 19' 18.377 N 148° 43' 0.207 W 7,187.96 6.68 153.87 7,186.93 12.29 17.03 5,968,923.64 658,273.76 70° 19' 18.364 N 148° 43' 0.189 W 7,200.26 6.88 154.16 7,199.15 10.98 17.66 5,968,922.35 658,274.43 70° 19' 18.352 N 148° 43' 0.170 W 7,212.56 7.07 154.61 7,211.36 9.63 18.31 5,968,921.02 658,275.10 70° 19' 18.338 N 148° 43' 0.151 W 7,224.86 7.27 154.99 7,223.56 8.25 18.96 5,968,919.64 658 70° 19' 18.325 N 148° 43' 0.132 W 7,237.16 7.55 155.27 7,235.76 6.81 19.63 5,968,918.22 658,276.48 70° 19' 18.311 N 148° 43' 0.113 W 7,249.46 7.85 155.69 7,247.95 5.31 20.31 5,968,916.73 658,277.20 70° 19' 18.296 N 148° 43' 0.093 W 7,262.06 8.07 156.09 7,260.43 3.71 21.03 5,968,915.16 658,277.94 70° 19' 18.280 N 148° 43' 0.072 W 7,274.56 8.25 156.11 7,272.80 2.09 21.74 5,968,913.55 658,278.69 70° 19' 18.264 N 148° 43' 0.051 W 7,287.06 8.38 156.02 7,285.17 0.44 22.48 5,968,911.91 658,279.46 70° 19' 18.248 N 148° 43' 0.030 W 7,299.56 8.52 156.02 7,297.53 -1.24 23.22 5,968,910.25 658,280.24 70° 19' 18.231 N 148° 43' 0.008 W 7,312.06 8.68 156.09 7,309.89 -2.95 23.98 5,968,908.56 658,281.04 70° 19' 18.215 N 148° 42' 59.986 W 7,324.36 8.87 156.38 7,322.05 -4.66 24.74 5,968,906.86 658,281.83 70° 19' 18.198 N 148° 42' 59.964 W 7,336.56 9.05 156.49 7,334.10 -6.41 25.50 5,968,905.13 658,282.63 70° 19' 18.181 N 148° 42' 59.942 W 7,348.86 9.25 156.30 7,346.24 -8.20 26.28 5,968,903.36 658,283.45 70° 19' 18.163 N 148° 42' 59.919 W 7,361.06 9.45 156.25 7,358.28 -10.01 27.08 5,968,901.56 658,284.28 70° 19' 18.145 N 148° 42' 59.895 W 7,373.36 9.60 156.33 7,370.41 -11.88 27.90 5,968,899.72 658,285.14 70° 19' 18.127 N 148° 42' 59.872 W 7,385.66 9.75 156.35 7,382.54 -13.77 28.73 5,968,897.84 658,286.01 70° 19' 18.108 N 148° 42' 59.847 W 7,397.76 9.87 156.35 7,394.46 -15.66 29.55 5,968,895.97 658,286.88 70° 19' 18.090 N 148° 42' 59.823 W 7,409.76 10.00 156.35 7,406.28 -17.55 30.39 5,968,894.09 658,287.75 70° 19' 18.071 N 148° 42' 59.799 W 7,421.86 10.18 156.40 7,418.19 -19.50 31.23 5,968,892.17 658,288.64 70° 19' 18.052 N 148° 42' 59.774 W 7,433.96 10.40 156.57 7,430.10 -21.48 32.10 5,968,890.20 658,289.54 70° 19' 18.032 N 148° 42' 59.749 W 7,446.06 10.65 156.78 7,441.99 -23.51 32.97 5,968,888.19 658,290.46 70° 19' 18.012 N 148° 42' 59.723 W 7,458.06 10.93 157.01 7,453.78 -25.57 33.85 5,968,886.15 658,291.38 70° 19' 17.992 N 148° 42' 59.698 W I 7,470.26 11.22 157.30 7,465.75 -27.73 34.76 5,968,884.01 658,292.34 70° 19' 17.971 N 148° 42' 59.671 W 7,482.46 11.45 157.52 7,477.72 -29.95 35.68 5,968,881.81 658,293.31 70° 19' 17.949 N 148° 42' 59.644 W 7,494.66 11.65 157.60 7,489.67 -32.21 36.62 5,968,879.58 658,294.29 70° 19' 17.927 N 148° 42' 59.617 W 7,506.86 11.83 157.61 7,501.61 -34.50 37.56 5,968,877.30 658,295.28 70 19' 17.904 N 148° 42' 59.590 W 7,519.26 11.98 157.57 7,513.75 -36.87 38.54 5,968,874.96 658,296.30 70° 19' 17.881 N 148° 42' 59.561 W 7,531.56 12.13 157.46 7,525.78 -39.24 39.52 5,968,872.61 658,297.34 70° 19' 17.858 N 148° 42' 59.532 W 7,543.76 12.33 157.44 7,537.70 -41.63 40.51 5,968,870.24 658,298.38 70° 19' 17.834 N 148° 42' 59.503 W 7,556.06 12.55 157.48 7,549.71 -44.07 41.53 5,968,867.82 658,299.44 70° 19' 17.810 N 148° 42' 59.474 W 7,568.26 12.77 157.48 7,561.61 -46.54 42.55 5,968,865.37 658,300.52 70° 19' 17.786 N 148° 42' 59.444 W 7,580.56 13.00 157.48 7,573.60 -49.08 43.60 5,968,862.86 658,301.62 70° 19' 17.761 N 148° 42' 59.413 W 7,592.76 13.27 157.52 7,585.48 -51.64 44.66 5,968,860.32 658,302.74 70° 19' 17.736 N 148° 42' 59.382 W 7,604.96 13.52 157.57 7,597.35 -54.25 45.74 5,968,857.73 658,303.87 70° 19' 17.710 N 148° 42' 59.351 W 7,617.06 13.75 157.52 7,609.11 -56.89 46.83 5,968,855.12 658,305.02 70° 19' 17.684 N 148° 42' 59.319 W 7,629.16 13.97 157.37 7,620.86 -59.56 47.94 5,968,852.47 658,306.19 70° 19' 17.658 N 148° 42' 59.287 W 7,641.46 14.20 157.25 7,632.79 -62.32 49.10 5,968,849.73 658,307.40 70° 19' 17.631 N 148° 42' 59.253 W 7,654.46 14.45 157.12 7,645.39 -65.29 50.35 5,968,846.79 658,308.71 70° 19' 17.602 N 148° 42' 59.216 W 7,667.36 14.72 157.01 7,657.87 -68.28 51.61 5,968,843.83 658,310.04 70° 19' 17.572 N 148° 42' 59.180 W 7,680.26 14.95 156.94 7,670.34 -71.32 52.90 5,968,840.82 658,311.39 70° 19' 17.542 N 148° 42' 59.142 W 7,693.26 15.17 156.95 7,682.89 -74.43 54.23 5,968,837.74 658,312.78 70° 19' 17.512 N 148° 42' 59.103 W 7,706.36 15.40 157.01 7,695.53 -77.61 55.58 5,968,834.59 658,314.20 70° 19' 17.480 N 148° 42' 59.064 W 7,719.46 15.62 157.09 7,708.15 -80.83 56.94 5,968,831.39 658,315.63 70° 19' 17.449 N 148° 42' 59.024 W 7,732.56 15.80 157.22 7,720.76 -84.10 58.32 5,968,828.15 658,317.08 70° 19' 17.417 N 148° 42' 58.984 W 8/19/2010 2:21:59PM Page 13 COMPASS 2003.16 Build 71 • BPPASSPORT Survey Report - Geographic Company: North America - ALASKA - BP Local Co- ordinate Reference: Well G - 23 Project: Prudhoe Bay TVD Reference: G -23B @ 62.66ft (Doyon 141) Site: PB G Pad MD Reference: G -23B @ 62.66ft (Doyon 141) Well: G - 23 North Reference: True Wellbore: G - 23B Survey Calculation Method: Minimum Curvature Design: G - 23B Database: EDM .16 - Anc Prod - WH24P 1 Survey Measured Vertical Map Map Depth Inclination Azimuth Depth +N / -S +E / -W Northing Easting (ft) ( °) ( °) (ft) (ft) (ft) (ft) (ft) Latitude Longitude 7,745.76 15.98 157.28 7,733.46 -87.44 59.72 5,968,824.85 658,318.54 70° 19' 17.384 N 148° 42' 58.943 W 7,758.76 16.18 157.24 7,745.95 -90.76 61.11 5,968,821.56 658,320.00 70° 19' 17.351 N 148° 42' 58.902 W 7,771.86 16.37 157.29 7,758.53 -94.14 62.53 5,968,818.20 658,321.49 70° 19' 17.318 N 148° 42' 58.861 W 7,785.06 16.55 157.45 7,771.18 -97.59 63.97 5,968,814.78 658,323.01 70° 19' 17.284 N 148° 42' 58.819 W 7,798.16 16.73 157.56 7,783.74 - 101.06 65.40 5,968,811.35 658,324.51 70° 19' 17.250 N 148° 42' 58.777 W 7,811.36 16.93 157.70 7,796.37 - 104.59 66.86 5,968,807.85 658,326.04 70° 19' 17.215 N 148° 42' 58.735 W 7,824.36 17.12 157.87 7,808.80 - 108.12 68.30 5,968,804.35 658,327.56 70° 19' 17.180 N 148° 42' 58.693 W 7,837.26 17.30 157.96 7,821.12 - 111.65 69.73 5,968,800.85 658,329.06 70° 19' 17.146 N 148° 42' 58.651 W 7,850.26 17.52 158.03 7,833.53 - 115.26 71.19 5,968,797.27 658,330.60 70° 19' 17.110 N 148° 42' 58.608 W 7,863.16 17.75 158.12 7,845.82 - 118.89 72.65 5,968,793.68 658,332.13 70° 19' 17.074 N 148° 42' 58.566 W 7,876.06 17.97 158.18 7,858.10 - 122.56 74.12 5,968,790.04 658,333.68 70° 19' 17.038 N 148° 42' 58.523 W 7,889.06 18.23 158.34 7,870.46 - 126.31 75.62 5,968,786.32 658,335.26 70° 19' 17.001 N 148° 42' 58.479 W I 7,901.96 18.53 158.73 7,882.70 - 130.10 77.10 5,968,782.57 658,336.82 70° 19' 16.964 N 148° 42' 58.436 W 7,915.06 18.87 159.18 7,895.11 - 134.02 78.61 5,968,778.68 658,338.41 70° 19' 16.926 N 148° 42' 58.392 W 7,928.06 19.25 159.54 7,907.39 - 137.99 80.11 5,968,774.74 658,339.99 70° 19' 16.887 N 148° 42' 58.348 W 7,941.16 19.65 159.90 7,919.75 - 142.08 81.62 5,968,770.68 658,341.59 70° 19' 16.846 N 148° 42' 58.304 W 7,954.26 20.08 160.29 7,932.07 - 146.27 83.14 5,968,766.53 658,343.19 70° 19' 16.805 N 148° 42' 58.260 W 7,967.36 20.53 160.75 7,944.35 - 150.55 84.65 5,968,762.28 658,344.80 70° 19' 16.763 N 148° 42' 58.215 W 7,980.46 20.97 161.23 7,956.60 - 154.94 86.16 5,968,757.92 658,346.40 70° 19' 16.720 N 148° 42' 58.171 W 7,993.56 21.35 161.57 7,968.82 - 159.42 87.67 5,968,753.47 658,348.01 70° 19' 16.676 N 148° 42' 58.127 W 8,006.56 21.72 161.76 7,980.91 - 163.95 89.17 5,968,748.98 658,349.60 70° 19' 16.631 N 148° 42' 58.083 W I 8,019.36 22.07 161.94 7,992.79 - 168.49 90.66 5,968,744.47 658,351.18 70° 19' 16.587 N 148° 42' 58.040 W 8,032.16 22.43 162.21 8,004.64 -173.10 92.15 5,968,739.90 658,352.77 70° 19' 16.541 N 148° 42' 57.996 W 8,044.96 22.80 162.53 8,016.45 - 177.79 93.64 5,968,735.24 658,354.36 70° 19' 16.495 N 148° 42' 57.953 W 8,057.65 23.22 162.84 8,028.13 - 182.52 95.12 5,968,730.53 658,355.94 70° 19' 16.449 N 148° 42' 57.910 W 8,063.00 23.42 162.94 8,033.04 - 184.55 95.74 5,968,728.52 658,356.60 70° 19' 16.429 N 148° 42' 57.892 W 8,105.03 24.34 156.75 8,071.48 - 200.49 101.61 5,968,712.71 658,362.81 70° 19' 16.272 N 148° 42' 57.720 W 8,138.06 25.89 152.16 8,101.39 - 213.13 107.67 5,968,700.21 658,369.13 70° 19' 16.148 N 148° 42' 57.544 W 8,170.31 26.72 148.01 8,130.30 - 225.50 114.80 5,968,687.98 658,376.52 70° 19' 16.026 N 148° 42' 57.336 W 8,199.69 27.20 144.39 8,156.49 - 236.57 122.21 5,968,677.08 658,384.16 70° 19' 15.917 N 148° 42' 57.119 W 8,232.38 27.87 140.51 8,185.48 - 248.54 131.42 5,968,665.31 658,393.62 70° 19' 15.799 N 148° 42' 56.851 W 8,261.66 28.50 137.18 8,211.29 - 258.94 140.52 5,968,655.10 658,402.94 70° 19' 15.697 N 148° 42' 56.585 W 8,295.22 29.25 133.53 8,240.68 - 270.46 151.90 5,968,643.82 658,414.56 70° 19' 15.584 N 148° 42' 56.253 W 8,327.87 29.46 129.22 8,269.14 - 281.04 163.91 5,968,633.50 658,426.79 70° 19' 15.480 N 148° 42' 55.902 W 8,356.78 29.90 126.56 8,294.26 - 289.82 175.21 5,968,624.96 658,438.26 70° 19' 15.393 N 148° 42' 55.573 W 8,389.56 30.06 123.91 8,322.66 - 299.27 188.58 5,968,615.79 658,451.84 70° 19' 15.300 N 148° 42' 55.182 W 8,421.16 30.40 121.66 8,349.96 - 307.88 201.96 5,968,607.47 658,465.39 70° 19' 15.216 N 148° 42' 54.792 W 8,478.65 30.38 122.22 8,399.55 - 323.27 226.64 5,968,592.60 658,490.39 70° 19' 15.064 N 148° 42' 54.072 W 8,532.47 30.45 121.56 8,445.96 - 337.66 249.77 5,968,578.70 658,513.82 70° 19' 14.923 N 148° 42' 53.397 W 8,562.29 31.57 123.80 8,471.52 - 345.96 262.70 5,968,570.68 658,526.91 70° 19' 14.841 N 148° 42' 53.020 W 8,593.50 32.69 126.64 8,497.95 - 355.54 276.25 5,968,561.39 658,540.66 70° 19' 14.747 N 148° 42' 52.624 W 8,626.71 33.52 132.58 8,525.78 - 367.10 290.20 5,968,550.13 658,554.86 70° 19' 14.633 N 148° 42' 52.217 W 8,658.57 34.27 138.22 8,552.23 - 379.74 302.66 5,968,537.75 658,567.58 70° 19' 14.509 N 148° 42' 51.853 W 8,689.53 35.56 143.39 8,577.63 - 393.47 313.84 5,968,524.26 658,579.04 70° 19' 14.374 N 148° 42' 51.527 W 8,719.22 37.59 146.99 8,601.47 - 408.00 323.92 5,968,509.95 658,589.43 70° 19' 14.231 N 148° 42' 51.233 W 8,755.64 39.98 150.81 8,629.86 - 427.53 335.68 5,968,490.67 658,601.60 70° 19' 14.039 N 148° 42' 50.890 W 8,785.42 41.99 152.85 8,652.34 - 444.75 344.90 5,968,473.65 658,611.17 70° 19' 13.869 N 148° 42' 50.621 W 8,819.75 43.52 155.53 8,677.55 - 465.73 355.03 5,968,452.89 658,621.75 70° 19' 13.663 N 148° 42' 50.325 W 8,849.29 43.19 158.64 8,699.03 - 484.41 362.93 5,968,434.39 658,630.04 70° 19' 13.479 N 148° 42' 50.095 W 8,878.26 42.72 160.01 8,720.24 - 502.87 369.90 5,968,416.07 658,637.39 70° 19' 13.298 N 148° 42' 49.891 W 8,908.89 42.91 162.30 8,742.71 - 522.57 376.62 5,968,396.52 658,644.53 70° 19' 13.104 N 148° 42' 49.695 W 8,938.60 43.88 165.67 8,764.30 - 542.19 382.25 5,968,377.03 658,650.57 70° 19' 12.911 N 148° 42' 49.531 W 8,972.59 45.25 168.70 8,788.51 - 565.44 387.53 5,968,353.90 658,656.34 70° 19' 12.682 N 148° 42' 49.377 W 9,005.52 47.53 173.22 8,811.23 - 588.98 391.26 5,968,330.45 658,660.56 70° 19' 12.451 N 148° 42' 49.268 W 9,038.48 48.18 177.14 8,833.35 - 613.32 393.30 5,968,306.15 658,663.12 70° 19' 12.212 N 148° 42' 49.209 W 8/19/2010 2:21:59PM Page 14 COMPASS 2003.16 Build 71 . i BPPASSPORT Survey Report - Geographic Company: North America - ALASKA - BP Local Co- ordinate Reference: Well G - 23 Project: Prudhoe Bay TVD Reference: G -23B @ 62.66ft (Doyon 141) Site: PB G Pad MD Reference: G -23B @ 62.66ft (Doyon 141) Well: G - 23 North Reference: True Wellbore: G - 23B Survey Calculation Method: Minimum Curvature Design: G - 23B Database: EDM .16 - Anc Prod - WH24P Survey Measured Vertical Map Map Depth Inclination Azimuth Depth +N / -S +E / -W Northing Easting (ft) ( °) ( ) (ft) (ft) (ft) (ft) (ft) Latitude Longitude 9,067.81 48.83 180.29 8,852.79 - 635.28 393.79 5,968,284.21 658,664.07 70° 19' 11.996 N 148° 42' 49.194 W 9,100.21 50.45 185.81 8,873.78 - 659.91 392.47 5,968,259.56 658,663.26 70° 19' 11.753 N 148° 42' 49.233 W 9,132.93 52.86 191.18 8,894.09 - 685.27 388.66 5,968,234.13 658,659.99 70° 19' 11.504 N 148° 42' 49.344 W 9,161.64 54.70 194.60 8,911.05 - 707.84 383.48 5,968,211.45 658,655.30 70° 19' 11.282 N 148° 42' 49.495 W 9,193.15 57.45 199.05 8,928.64 - 732.85 375.91 5,968,186.29 658,648.25 70° 19' 11.036 N 148° 42' 49.716 W 9,225.31 61.32 202.91 8,945.02 - 758.67 365.98 5,968,160.27 658,638.87 70° 19' 10.782 N 148° 42' 50.006 W 9,253.13 64.02 204.86 8,957.80 - 781.27 355.97 5,968,137.47 658,629.34 70° 19' 10.560 N 148° 42' 50.298 W 9,287.27 67.80 208.30 8,971.73 - 809.12 342.02 5,968,109.33 658,615.98 70° 19' 10.286 N 148° 42' 50.705 W 9,319.23 70.76 211.90 8,983.04 - 834.97 327.03 5,968,083.17 658,601.53 70° 19' 10.032 N 148° 42' 51.143 W 9,347.19 72.78 214.11 8,991.79 - 857.24 312.56 5,968,060.61 658,587.54 70° 19' 9.813 N 148° 42' 51.565 W 9,378.03 75.27 217.83 9,000.28 - 881.22 295.14 5,968,036.26 658,570.64 70° 19' 9.577 N 148° 42' 52.073 W ; 9,414.25 78.00 221.79 9,008.65 - 908.28 272.58 5,968,008.74 658,548.66 70° 19' 9.311 N 148° 42' 52.732 W 9,439.71 79.51 225.03 9,013.62 - 926.41 255.43 5,967,990.24 658,531.88 70° 19' 9.132 N 148° 42' 53.232 W 9,476.39 80.76 228.74 9,019.91 - 951.11 229.05 5,967,965.00 658,506.04 70° 19' 8.890 N 148° 42' 54.002 W 9,508.38 83.19 233.24 9,024.37 - 971.04 204.44 5,967,944.56 658,481.86 70° 19' 8.694 N 148° 42' 54.720 W 9,535.09 85.24 236.08 9,027.07 - 986.40 182.77 5,967,928.74 658,460.51 70° 19' 8.542 N 148° 42' 55.353 W 9,567.71 88.51 240.14 9,028.84 - 1,003.60 155.12 5,967,910.96 658,433.24 70° 19' 8.373 N 148° 42' 56.159 W 9,604.14 89.26 244.31 9,029.55 - 1,020.57 122.90 5,967,893.32 658,401.38 70° 19' 8.206 N 148° 42' 57.099 W 9,630.65 89.75 246.61 9,029.78 - 1,031.58 98.79 5,967,881.80 658,377.51 70° 19' 8.098 N 148° 42' 57.803 W 9,662.62 90.43 249.45 9,029.73 - 1,043.54 69.14 5,967,869.22 658,348.13 70° 19' 7.980 N 148° 42' 58.668 W 9,696.18 89.52 254.53 9,029.75 - 1,053.91 37.24 5,967,858.18 658,316.45 70° 19' 7.878 N 148° 42' 59.599 W 9,727.30 89.31 258.14 9,030.07 - 1,061.26 7.01 5,967,850.20 658,286.38 70° 19' 7.806 N 148° 43' 0.481 W 9,759.00 90.49 261.90 9,030.12 - 1,066.76 -24.21 5,967,844.05 658,255.29 70° 19' 7.752 N 148° 43' 1.392 W 9,789.28 91.54 265.84 9,029.58 - 1,069.99 -54.30 5,967,840.18 658,225.27 70° 19' 7.720 N 148° 43' 2.270 W I 9,816.61 90.75 269.36 9,029.04 - 1,071.13 -81.60 5,967,838.46 658,198.01 70° 19' 7.709 N 148° 43' 3.067 W I 9,849.63 89.63 273.40 9,028.93 - 1,070.34 - 114.60 5,967,838.56 658,165.00 70° 19' 7.717 N 148° 43' 4.030 W 9,884.35 89.31 276.88 9,029.25 - 1,067.23 - 149.18 5,967,840.94 658,130.37 70° 19' 7.748 N 148° 43' 5.039 W 9,910.39 89.39 279.73 9,029.54 - 1,063.47 - 174.94 5,967,844.16 658,104.54 70° 19' 7.785 N 148° 43' 5.790 W 9,937.21 90.38 282.24 9,029.60 - 1,058.36 - 201.27 5,967,848.71 658,078.11 70° 19' 7.835 N 148° 43' 6.559 W 9,972.22 88.04 282.91 9,030.08 - 1,050.74 - 235.43 5,967,855.61 658,043.79 70° 19' 7.910 N 148° 43' 7.556 W 10,002.54 87.66 282.54 9,031.22 - 1,044.06 - 264.98 5,967,861.66 658,014.11 70° 19' 7.975 N 148° 43' 8.418 W 10,032.47 87.21 282.62 9,032.56 - 1,037.55 - 294.17 5,967,867.55 657,984.80 70° 19' 8.039 N 148° 43' 9.269 W 10,066.97 88.90 282.33 9,033.73 - 1,030.10 - 327.83 5,967,874.29 657,950.99 70° 19' 8.113 N 148° 43' 10.252 W 10,094.88 90.62 282.46 9,033.85 - 1,024.11 - 355.09 5,967,879.70 657,923.61 70° 19' 8.171 N 148° 43' 11.047 W 10,126.25 90.76 281.13 9,033.47 - 1,017.70 - 385.79 5,967,885.46 657,892.78 70° 19' 8.235 N 148° 43' 11.943 W 10,160.40 91.43 280.13 9,032.82 - 1,011.40 - 419.35 5,967,891.05 657,859.10 70° 19' 8.296 N 148° 43' 12.922 W 10,190.89 91.30 279.79 9,032.09 - 1,006.13 - 449.37 5,967,895.69 657,828.97 70° 19' 8.348 N 148° 43' 13.798 W'I 10,220.59 91.22 279.57 9,031.44 - 1,001.14 - 478.64 5,967,900.06 657,799.61 70° 19' 8.397 N 148° 43' 14.653 W 10,252.54 91.56 280.47 9,030.66 - 995.58 - 510.10 5,967,904.96 657,768.05 70° 19' 8.452 N 148° 43' 15.570 W 10,285.80 91.19 280.85 9,029.86 - 989.43 - 542.77 5,967,910.42 657,735.25 70° 19' 8.512 N 148° 43' 16.524 W 10,314.38 90.69 280.29 9,029.39 - 984.19 - 570.86 5,967,915.07 657,707.06 70° 19' 8.564 N 148° 43' 17.344 W 10,349.51 90.13 280.02 9,029.14 - 977.99 - 605.44 5,967,920.53 657,672.36 70° 19' 8.625 N 148° 43' 18.353 W 10,378.61 90.57 282.03 9,028.97 - 972.43 - 634.00 5,967,925.49 657,643.69 70° 19' 8.680 N 148° 43' 19.186 W 10,408.40 90.32 282.24 9,028.73 - 966.17 - 663.13 5,967,931.14 657,614.44 70° 19' 8.741 N 148° 43' 20.036 W 10,443.25 89.95 283.41 9,028.65 - 958.43 - 697.11 5,967,938.15 657,580.31 70° 19' 8.817 N 148° 43' 21.027 W 10,502.55 89.53 282.90 9,028.92 - 944.94 - 754.85 5,967,950.43 657,522.30 70° 19' 8.950 N 148° 43' 22.712 W 10,596.91 89.70 283.46 9,029.55 - 923.42 - 846.72 5,967,970.00 657,430.00 70° 19' 9.161 N 148° 43' 25.393 W 10,691.06 89.95 283.36 9,029.84 - 901.59 - 938.30 5,967,989.89 657,337.98 70° 19' 9.376 N 148° 43' 28.066 W I 10,784.43 92.58 284.16 9,027.78 - 879.39 - 1,028.96 5,968,010.18 657,246.88 70° 19' 9.594 N 148° 43' 30.711 W 10,876.34 90.30 285.89 9,025.47 - 855.57 - 1,117.69 5,968,032.12 657,157.67 70° 19' 9.828 N 148° 43' 33.301 W 10,970.59 89.07 286.81 9,025.99 - 829.04 - 1,208.13 5,968,056.73 657,066.71 70° 19' 10.089 N 148° 43' 35.940 W 11,061.26 88.90 286.94 9,027.60 - 802.72 - 1,294.88 5,968,081.21 656,979.43 70° 19' 10.348 N 148° 43' 38.471 W 11,159.81 89.58 285.50 9,028.90 - 775.20 - 1,389.50 5,968,106.73 656,884.26 70° 19' 10.618 N 148° 43' 41.232 W 11,253.86 90.13 282.64 9,029.14 - 752.34 - 1,480.71 5,968,127.66 656,792.58 70° 19' 10.843 N 148° 43' 43.894 W 11,347.96 89.03 282.36 9,029.83 - 731.97 - 1,572.58 5,968,146.09 656,700.32 70° 19' 11.043 N 148° 43' 46.575 W 8/19/2010 2:21:59PM Page 15 COMPASS 2003.16 Build 71 , • • BPPASSPORT Survey Report - Geographic Company: North America - ALASKA - BP Local Co- ordinate Reference: Well G -23 Project: Prudhoe Bay TVD Reference: G -23B @ 62.66ft (Doyon 141) Site: PB G Pad MD Reference: G -23B @ 62.66ft (Doyon 141) Well: G -23 North Reference: True Wellbore: G -23B Survey Calculation Method: Minimum Curvature Design: G -23B Database: EDM .16 - Anc Prod - WH24P Survey Measured Vertical Map Map Depth Inclination Azimuth Depth +N /-S +E / -W Northing Easting (ft) (°) ( °) (ft) (ft) (ft) (ft) (ft) Latitude Longitude 11,374.91 88.52 282.20 9,030.41 - 726.24 - 1,598.91 5,968,151.26 656,673.88 70° 19' 11.099 N 148° 43' 47.344 W 11,420.00 88.52 282.20 9,031.57 - 716.71 - 1,642.96 5,968,159.86 656,629.63 70° 19' 11.193 N 148° 43' 48.629 W i Targets Target Name - hit/miss target Dip Angle Dip Dir. TVD +N / -S +E / -W Northing Easting - Shape (°) ( °) (ft) (ft) (ft) (ft) (ft) Latitude Longitude G -23B Tgt 2 0.00 0.00 9,029.66 - 975.00 - 580.00 5,967,924.06 657,697.73 70° 19' 8.654 N 148° 43' 17.610 W - actual wellpath misses target center by 7.43ft at 10324.99ft MD (9029.28 TVD, - 982.30 N, - 581.30 E) - Point G -23B Tgt 1 0.00 0.00 9,029.66 - 1,010.00 171.94 5,967,904.92 658,450.19 70° 19' 8.310 N 148° 42' 55.668 W - actual wellpath misses target center by 14.12ft at 9556.86ft MD (9028.46 TVD, - 998.10 N, 164.46 E) - Point G -23B Tgt 3 0.00 0.00 9,029.66 - 750.00 - 1,650.00 5,968,126.43 656,623.30 70° 19' 10.866 N 148° 43' 48.834 W - actual wellpath misses target center by 34.08ft at 11419.79ft MD (9031.57 TVD, - 716.76 N, - 1642.76 E) - Point G -23B Flt 1 9015ss 0.00 0.00 9,077.66 - 1,229.54 - 1,983.51 5,967,640.00 656,300.00 70° 19' 6.149 N 148° 43' 58.563 W - actual wellpath misses target center by 617.32ft at 11420.00ft MD (9031.57 TVD, - 716.71 N, - 1642.96 E) - Polygon Point 1 9,077.66 - 1,229.54 - 1,983.51 5,967,640.00 656,300.00 Point 2 9,077.66 - 1,343.57 - 845.58 5,967,550.00 657,440.00 Point 3 9,077.66 - 1,362.53 - 420.85 5,967,540.00 657,865.00 Point 4 9,077.66 - 1,489.57 -88.44 5,967,420.00 658,200.00 Point 5 9,077.66 - 1,362.53 - 420.85 5,967,540.00 657,865.00 Point 6 9,077.66 - 1,343.57 - 845.58 5,967,550.00 657,440.00 G -23B Polygon 0.00 0.00 9,029.66 - 1,010.00 171.94 5,967,904.92 658,450.19 70° 19' 8.310 N 148° 42' 55.668 W - actual wellpath misses target center by 14.12ft at 9556.86ft MD (9028.46 TVD, - 998.10 N, 164.46 E) - Polygon Point 1 9,029.66 - 892.09 39.20 5,968,020.00 658,315.00 Point 2 9,029.66 - 948.07 - 152.03 5,967,960.00 658,125.00 Point 3 9,029.66 - 625.11 - 1,710.68 5,968,250.00 656,560.00 Point 4 9,029.66 - 799.24 - 1,754.37 5,968,075.00 656,520.00 Point 5 9,029.66 - 1,148.04 - 156.25 5,967,760.00 658,125.00 Point 6 9,029.66 - 1,113.43 99.55 5,967,800.00 658,380.00 Point 7 9,029.66 .954,129.71 784,029.43 0.00 0.00 Point 8 9,029.66 .954,129.71 784,029.43 0.00 0.00 Casing Points Measured Vertical Casing Hole Depth Depth Diameter Diameter (ft) (ft) Name (in) (in) 2,685.96 2,685.95 13 3/8" 13.375 17.500 11,418.00 9,031.52 PRODUCTION CASING 1 4.500 6.125 8,519.00 8,434.35 DRILLING LINER 1 7.000 8.500 Checked By: Approved By: Date: 8/19/2010 2:21:59PM Page 16 COMPASS 2003.16 Build 71 �� I Data Analyzer Query Results Query Name: LOT / FIT Fixed Field Data by Wellbore 1 Comm ' WB Surface Date LOT/FIT MW (ppg) TVD(ft) TMD (ft) BHP (psi) EMYV(PPg) Name Press 1 G-23B 8��O1O - FIT 1O.5Oi 8.O74�43 8, 065. 02 230.0 i 4.6342 11.05j G-23B :8/10/2010 FIT � 8.801 8.519.021 8,519.021 ? 150.0 4.044.41 914: 9/29/2010 14:14 Page 1 of 1 0 WELL LOG TRANSMITTAL To: State of Alaska September 9, 2010 Alaska Oil and Gas Conservation Commission Attn.: Christine Shartzer 333 West 7th Avenue, Suite 100 Anchorage, Alaska 99501 -3539 RE: LWD Formation Evaluation Logs: G -23B AK -MW- 0007521068 G -23B 50- 029 - 21680 -02 2" x 5" MD Triple Combo Logs: 1 Color Log 2" x 5" TVD Triple Combo Logs: 1 Color Log Digital Log Images & LWDG- formatted LIS Data w /verification listing; 1 CD Rom PLEASE ACKNOWLEDGE RECEIPT BY SIGNING AND RETURNING A COPY OF THE TRANSMITTAL LETTER TO THE ATTENTION OF: Sperry Drilling Attn: Bryan Burinda 6900 Arctic Blvd. 0 - Anchorage, Alaska 99518 Office: 907 - 273 -3536 cgo t1 li rr r 4-1.; r n B . r h i urton.com 201i' a Date: Signed: /6- COMMiSaaor AIC :age • r -- - j)F A SEAN PARNELL, GOVERNOR ALASKA OIL AND GAS 333 W. 7th AVENUE, SUITE 100 CONSERVATION COMMISSION ANCHORAGE, ALASKA 99501 -3539 PHONE (907) 279 -1433 FAX (907) 276-7542 Mr. Greg Hobbs Engineering Team Leader BP Exploration (Alaska), Inc. P.O. Box 196612 Anchorage, AK 99519 -6612 Re: Prudhoe Bay Field, Prudhoe Bay Oil Pool, PBU G -23B BP Exploration (Alaska), Inc. Permit No: 209 -144 Surface Location: 2542' FSL, 1973' FEL, SEC.12, T11N, R13E, UM Bottomhole Location: 1791' FSL, 3623' FEL, SEC.12, T11N, R13E, UM Dear Mr. Hobbs: Enclosed is the approved application for permit to re -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 . • , required test, contact the Commission's petroleum field inspector at (90659 3607 (pager). Jo ► . ► i • mmissioner DATED this Sday of November, 2009 cc: Department of Fish 86 Game, Habitat Section w/o encl. Department of Environmental Conservation w/o encl. STATE OF ALASKA A ' ' �� ALAS OIL AND GAS CONSERVATION COMMON -// ' 9 it ti PERMIT TO DRILL ` ` 20 AAC 25.005 1 a. Type of work: 1 b. Proposed Well Class: ® Development Oil ❑ Service - Win' ❑ Single Zone 1 c. Specify if well is proposed for: ❑ Drill ® Redrill ❑ Stratigraphic Test ❑ Development Gas ❑ Service - Supply ❑ Multiple Zone ❑ Coalbed Gas ❑ Gas Hydrates ❑ Re -Entry ❑ Exploratory ❑ Service - WAG ❑ Service - Disp ❑ Shale Gas 2. Operator Name: 5. Bond: -: Blanket ❑ Single Well 11. Well Name and Number: BP Exploration (Alaska) Inc. Bond No. 6194193 PBU G -23B 3. Address: 6. Proposed Depth: 12. Field / Pool(s): P.O. Box 196612, Anchorage, Alaska 99519 -6612 MD 11454' TVD 9030' Prudhoe Bay Field / Prudhoe 4a. Location of Well (Governmental Section): 7. Property Designation (Lease Number): Bay Oil Pool Surface: ADL 028280 2542' FSL, 1973' FEL, SEC. 12, T11N, R13E, UM Top of Productive Horizon: 8. Land Use Permit: 13. Approximate Spud Date: 1531' FSL, 1801' FEL, SEC. 12, T11N, R13E, UM January 1, 2010 Total Depth: 9. Acres in Property: 14. Distance to Nearest Property: 1791' FSL, 3623' FEL, SEC. 12, T11N, R13E, UM 2560 16,598' 4b. Location of Well (State Base Plane Coordinates - NAD 27): 10. KB Elevation above MSL: —63.1' feet 15. Distance to Nearest Well Open Surface: x- 658257 y- 5968911 Zone ASP4 GL Elevation above MSL: 34.66' feet to Same Pool: 388' 16. Deviated Wells: Kickoff Depth: 8115' feet 17. Maximum Anticipated Pressures in psig (see 20 AAC 25.035) Maximum Hole Angle: 90 degrees Downhole: 3150 Surface: 2265 18. Casing Program: Specifications Top - Setting Depth - Bottom Quantity of Cement, c.f. or sacks Hole Casing Weight Grade Coupling Length MD TVD MD TVD (including stage data) 8 -1/2" 7" 26# L -80 TC -II 548' 7965' 7943' 8513' 8435' {{' ° 6 -1/8" 4 -1/2" 12.6# L -80 IBT -M 3091' 8363' 8303' 11454' 9030' , #s3'otted Liner) ° NHV 1 3 /lytl9 AIaskt Gil & Gas Cons. Commission 19. PRESENT WELL CONDITION SUMMARY (To be completed for Redrill and Re -entry Oq� Total Depth MD (ft): Total Depth TVD (ft): Plugs (measured): Effective Depth MD (ft): Effective Depth ff ): Junk (measured): 9896' 9072' 8355' 9817' 9051' None Casing Length Size Cement Volume MD TVD Conductor / Structural 110' 20" 9 cu vds Concrete 110' 110' Surface 2695' 13 -3/8" 3258 cu ft PF 'E'. 465 cu ft Permafrost 2695' 2695' Intermediate 8666' 9 -5/8" 575 cu ft Class 'G' 8666' 8540' Production Liner 8275' 5 -1/2" 850 cu ft Class '0' 8432' - 8707' 8358' - 8570' Liner 1462' 2 -7/8" 71 cu ft Class 'G' 8434' - 9896' 8359' - 9072' Perforation Depth MD (ft): Below Plug: 9380' - 9520' Perforation Depth TVD (ft): 9025' - 9032' 20. Attachments: ❑ Property Plat ❑ BOP Sketch ® Drilling Program ❑ Time vs Depth Plot ❑ Shallow Hazard Analysis ❑ Diverter Sketch ❑ Seabed Report IN Drilling Fluid Program ® 20 AAC 25.050 Requirements 21. Verbal Approval: Commission Representative: Date: 22. I hereby certify that the foregoing is rue and correct. Contact Joshua Mallery, 564 -5545 Printed Name Greg ,,1 % - b Title Engineering Team Leader Prepared By Name/Number: Signature y •' f ' Phone 564 -4191 Date / /�, 69 Terrie Hubble, 564 -4628 Commission Use Only Permit Drill 9/444 1 1123 /Og API Number: Pate: I See cover letter for Number: ci q` 50- 029 - 21680 -02 -00 other requirements 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: _ /Zr Other 3506 O f`: e J e r 51 _ e °T / Samples Req'd: ❑ yes 1No Mud Log Req'd: ❑ Yes t0 No - 25'o /054.- +mil n K . �Fn /2L �K.f H Measures: Yes ❑ No Directii• . - I Survey Req'd: Z G Yes ❑ No � �Glei e I - "t.5id % v/ LOW e. / , � CLC.C. - • A. AAC -L , 2 0 ✓• 9 ,)1 1IIF"� Y ! I N A 14 f • PROVED BY THE COMMISSION Date /� �j, ,37O1 , COMMISSIONER Form 10-401 Revised 07/2009 This permit is veil for 24 on s from the date o appr• `, . • • C 25.005(g) Submit In Duplicate 7 74— /1.11.6 ? E ... <,/'9./.0,5 -1 • To: Alaska Oil & Gas Conservation Commission From: Joshua Maller�', ODE Date: November 10 n , 2009 Re: G -23B Sidetrack Permit to Drill The sidetrack plan for the G -23B (an Ivishak Z1 B producer) includes the following during pre - rig operations: laying cement across the perforations, the 5 -1/2" tubing will be cut -100' below planned whipstock exit point. The whipstock exit from the 9 -5/8" casing is estimated at 8115' MD and will be milled using an 8 -1/2" milling assembly. The 8 -1/2" hole will be drilled to the Top of the Sag River where a 7" drilling liner will be run and fully cemented up to -150' inside the 9 -5/8 ". The production hole will be drilled with a 6 -1/8" BHA building to horizontal. The well will then run horizontally through the Ivishak formation. The liner is planned to be a 4 -1/2" L -80 bonzai completion with a fully cemented contingency plan. The production tubing will be 4 -1/2" 13Cr, tied into the top of the production liner. Please note the following Well Summary as detailed on the next few pages: G -23B Permit to Drill Application Page 1 i • Planned Well Summary Well G -23B W Producer Objective Ivishak 1 API Number: 50- 029 - 21680 -02 ' Current Status G -23B Shut -In and P &A Procedures commencing Estimated Start Date: Jan -1 -2010 Time to Complete: ( 18 Days Surface Northing Easting Offsets TRS Location 5,968,911 658,257 2738' FNL / 3307' FWL 11N, 13E,12 Production Northing Easting TVDss Offsets TRS Hole 5,967,905 658,450 -8,967 3748' FNL / 3478' FWL 11N, 13E, 12 Target Locations 5,967,924 657,697 -8,967 3713' FNL / 2726' FWL 11N, 13E, 12 BHL 5,968,126 656,623 -8,967 3489' FNL / 1656' FWL 11N, 13E, 12 Planned KOP: 8115'MD / 8017'TVDss Planned TD: 11,454'MD / 8,967' TVDss Rig: Nabors 7ES GURT: 34.6'/28.5 RTE: 63.1 Directional — Schlumberger /Anadrill P3b KOP: 1 8115' MD Maximum Hole Angle: -30° in the 8 -1/2" intermediate section -90° in the 6 -1/8" production section Close Approach Wells: G -23, G -23A, and G -10A are close approach wells in the production section. Reference A/C Scan. Survey Program: Standard MWD +IIFR +MS Nearest Property Line: 16,598 Nearest Well within Pool: 388' west of G -23B BHL ( G -31 B) Contacts Name Phone # E -mail Drilling Engineer Joshua Mallery 564 -5545 Joshua.Mallery @bp.com Geologist Kristin Papp 564 -5576 Kristin.Papp @bp.com Pad Engineer Chris Zamora 564 -4138 Chris.Zamora @bp.com G -23B Permit to Drill Application Page 2 • • • Formation Markers G -23B (Based on SOR) Commercial Est. Formation Hydrocarbo Est. Pore Est. Pore Tops Uncertainty n Bearing Press. Press. Formation (TVDss) (feet) (Yes/No) (Psi) (ppg EMW) ** Based on Well Correlations BPRF SV4 SV3 SV2 sv1 UG4 - 4367 ** 40 UG3 - 4635 ** 40 UG1 - 5119 ** 40 WS2 - 5641 ** 40 WS1 - 5847 ** 40 CM3 - 6099 ** 40 CM2 - 6903 ** 40 CM1' - 7158 ** 40 THRZ -7275 20 BHRZ -7508 20 LCU -7508 20 TJF -7508 20 TJE -7647 20 TJD -7922 20 KO -8031 20 TJC -8074 20 TJB -8204 20 TSGR -8372 20 Yes TSHU -8410 20 Yes TSAD -8491 10 Yes TCGL - 8625 ** 10 Yes BCGL - 8696 ** 20 Yes 25N -8778 20 Yes 22N -8847 20 Yes 3150 6.9 21N -8882 20 Yes PGOC -8920 20 TZ1B -8924 20 Yes TZ1A -8977 20 Yes MHO -8968 20 Yes OOWC (Projected) - 8992 20 N/A BSAD (Projected) - 9015 20 N/A G -23B Permit to Drill Application Page 3 • Casing/Tubing Program Hole Csg / Wt/Ft Grade Conn Burst Collapse Length Top Bottom Size Tbg O.D. (psi) (psi) ' MD / TVDrkb MD / TVDrkb 8 -'/2" 7" 26# L -80 TC -II 7,240 5,410 548' 7,965 / 7,942' '8,513' / 8,435' 6 -1/8" 4 12.6# L -80 IBT -M 8,430 7,500 3091' /8,363' / 8,303' X11,454' / 9,030' Tubing 4 12.6# 13Cr -80 Vam -Top 8,430 7,500 11,454' Surface 11,454' / 9,030' Mud Program Intermediate Mud Properties: LSND 1 8 -1/2" hole section Depth Interval Density (ppg) PV YP API FL HTHP FL MBT PH 8,115' - 8,513' 10.7 , 12 - 22 18 - 28 4 - 6 <10.0 <20 9 - 10 (KOP to Sag) Production Mud Properties: FLO PRO SF Reservoir Drill -in Fluid 1 6 -1/8" hole section Depth Interval Density (ppg) PV YP LSVR API Fl pH MBT 8,513'- 11,454' 8.4 — 8.5 8 -12 22 -28 >20,000 6.0 -8.0 9.0 -9.5 < 3 - Logging Program 8 -1/2" Intermediate: Sample Catchers — as required by Geology Drilling: Dir /GR/Res/ Open Hole: None Cased Hole: None 6 -1/8" Production: Sample Catchers — as required by Geology Drilling: Dir /GR/Res/Neu/Den • Open Hole: None Cased Hole: None Cement Program Casing Size 7" 26 #, L -80 Intermediate Liner Basis: Lead: None Tail: Volume of open hole + 30% excess + 80' shoe track + 150' of liner lap + 200' of 9 -5/8" x 4" DP excess. Tail TOC: 7,965' MD (Liner Top, excess will be circulated out) Total Cement Spacer 25 bbls of Viscosified Spacer weighted to 12.5 ppg (Mud Push II) Volume: Lead N/A Tail 30.1 bbls, 169.1 cuft, 144.5sks 15.8 lb/gal Class G + adds —1.17 cuft/sk Temp BHST =175° F, BHCT TBD by Schlumberger Bonzai Casing Size 4.5" 12.6 #, L -80 IBT -M Production Liner • Basis: Lead: None Tail: 1000' of open hole + 30% excess + 150' of liner lap + 200' of 7" x 4" DP excess. Tail TOC: 8,363' MD (Liner Top, excess will be circulated out) Total Cement Spacer 25 bbls of Viscosified Spacer weighted to 12 ppg (Mud Push 11) Volume: Lead N/A Tail 29.1 bbls, 163.6 cuft, 139.8 sks 15.8 lb/gal Class G + adds —1.17 cuft/sk Temp BHST = 200° F, BHCT TBD by Schlumberger G -23B Permit to Drill Application Page 4 Fully cemented continger Casing Size 4.5" 12.6 #,L -80 IBT -M Production Liner ' Basis: Lead: None Tail: Volume of open hole + 30% excess + 80' shoe track + 150' of liner lap + 200' of 7" x 4" DP excess. Tail TOC: 8,363' MD (Liner Top, excess will be circulated out) Total Cement Spacer 25 bbls of Viscosified Spacer weighted to 12 ppg (Mud Push II) Volume: Lead N/A Tail 72.7 bbls, 407.9 cuft, 348.7 sks 15.8 lb/gal Class G + adds —1.17 cuft/sk Temp BHST 200° F, BHCT TBD by Schlumberger • G -23B Permit to Drill Application Page 5 • Surface and Anti - Collision Issues Surface Shut -in Wells: There are no wells requiring surface shut -in in order to move onto the well. At surface G -24 is 35' to the north and , G -7 is to the south 35'. Close Approach Shut -in Wells: There are no wells requiring shut -in due to close approach issues. G -23, G -23A, and G -10A are close approach wells in the production section. These wells are P &A'd. Hydrogen Sulfide G -Pad is not considered an H2S site. Recent H data from the pad is as follows: Well Name H2S Level Date of Readin #1 Closest SHL Well H2S Level G -24 10 ppm 8/22/2000 #2 Closest SHL Well H2S Level G -07 10 ppm 4/15/2009 #1 Closest BHL Well H2S Level G -10C 40 ppm #2 Closest BHL Well H2S Level G -03A No data Max. Recorded H2S on Pad/Facility G -10C 40 ppm Other Relevant H2S Data G -23A H2S was 10 ppm on 8/25/00 G -Pad is not an H2S pad. (H2S alarms from rigs, etc.) Faults The proposed G -23B will not cross any mapped faults. Fault #1 is an E -W trending, down to the South fault with offset that varies from 0 to 20 ft in the area near the planned well Fault #1 was cut by the G -10, G -10A, G -10C, and possibly by the G -10B. Several of these wells note erratic toolface and /or directional problems at Fault #1. None of the wells that cut Fault #1 noted any lost circulation issues. Well Control Well control equipment consisting of 5,000 psi working pressure pipe rams (2), blind /shear rams, and annular preventer will be installed and are capable of handling the maximum potential surface pressures. Based upon calculations below, BOP equipment will be tested to 3,500 psi. BOP regular test frequency for G -23B will be 14 days during drilling phase and 7 days . during decompletion and surface casing work. BOPE and drilling fluid system schematics on file with the AOGCC. Intermediate Interval Maximum anticipated BHP /3,003 psi @ 8,372' TVDss (6.9 ppg EMW) Maximum surface pressure ( 2,165 psi (.10 psi /ft gas gradient to surface) Kick tolerance Infinite with 11.0 ppg frac gradient, assuming 6.9 ppg reservoir, 4" DP and 10.7 ppg MW Planned BOP test pressure Rams test to 3,500 psi /250 psi. Annular test to 2,500 psi /250 psi 9 -5/8" Casing Test / 7" Casing 3500 psi surface pressure Integrity Test — 8 -1/2" hole FIT /LOT after drilling 20' from middle of window 7" Casing The VBRs will be changed to 7" rams to accommodate the 7" drilling liner G -23B Permit to Drill Application Page 6 Production Interval • • Maximum anticipated BHP 3,150 psi c 8,847' TVDss (6.9 ppg EMW) Maximum surface pressure 2,265 psi (.10 psi /ft gas gradient to surface) Kick tolerance Infinite with 8.8 ppg frac gradient, assuming 6.9 ppg reservoir, 4" DP and 8.5 ppg MW Planned BOP test pressure Rams test to 3,500 psi /250 psi. Annular test to 2,500 psi /250 psi Integrity Test — 6 -1/8" hole LOT /FIT after drilling 20' of new hole Planned completion fluids 8.5 ppg Seawater / 6.8 ppg Diesel Disposal • No annular injection in this well. • Cuttings Handling: Cuttings generated from drilling operations will be hauled to grind and inject at DS- 04. Any metal cuttings will be sent to the North Slope Borough. • Fluid Handling: Haul all drilling and completion fluids and other Class 11 wastes to DS -04 for injection. Haul all Class 1 waste to Pad 3 for disposal. G -23B Permit to Drill Application Page 7 Dahill Hazards and Contincencies POST THIS NOTICE IN THE DOGHOUSE I. Well Control A. The Ivishak in this area is expected to be under - pressured at 6.9 ppg EMW. This pressure is estimated based on offset well pressures. 3500 psi test pressure is in accordance with the RP for Prudhoe production well casing tests for producing wells. II. Lost Circulation /Breathing A. The proposed G -23B will not cross any mapped faults. Fault #1 is an E -W trending, down to the South fault with offset that varies from 0 to 20 ft in the area near the planned well Fault #1 was cut by the G -10, G -10A, G -10C, and possibly by the G -10B. Several of these wells note erratic toolface and /or directional problems at Fault #1. None of the wells that cut Fault #1 noted any lost circulation issues. B. The G -23B is in an area of "Moderate" (in other words average) risk for lost circulation, according to the WURD study. The nearest significant lost circulation event was 800 ft NW of the KOP, in the G -31 which lost 2133 BBL at 7247 ft MD, above the LCU. This interval will be well above KOP (therefore behind pipe) in the planned well, and so should not prevent a problem. About 3000 ft N of the planned well the G -32A lost 310 BBL intoZl . As noted above, several wells cut the nearest fault (Fault #1) without losses. Based on the available data, the risk of significant lost circulation is rated as about average for the proposed G -31 B. Other significant LC events were much further away and are noted below. 1I1. Kick Tolerance/Integrity Testing A. With the planned mud weights, the kick tolerance for the intermediate section is infinite, and for the production section is infinite. The FIT /LOT will prove up adequate formation strength for expected ECD's. B. Integrity Testing Test Point Test Depth Test type EMW (lb/gal) 9-%" window 20 -ft minimum from the 9-%" window FIT /LOT 11.0 minimum 7" shoe 20 -ft minimum from the 7" shoe FIT /LOT 8.8 minimum IV. Hydrogen Sulfide A. G -Pad is not considered an H2S site. G -23A recorded 10 ppm on (8/25/00). The highest recorded H2S on the pad was 40 ppm on G -10C. V. Faults A. The G -23B wellpath is not expected to intersect any mapped faults. See Section II on lost circulation for more details. VI. Anti - Collision Issues A. G -23, G -23A, and G -10A fail major risk criteria in the production section. G -10A presents the greatest collision risk. G -23B is 207' away from G -10A center to center. CONSULT THE G -PAD DATA SHEET AND THE WELL PLAN FOR ADDITIONAL INFORMATION G -23B Permit to Drill Application Page 8 Operations Summary Well Status: ✓ MIT - IA Passed to 3000 psi 10/24/09 ✓ MIT - OA Passed to 2000 psi 10/24/09 ✓ PPPOT - T passed 06/17/08 ✓ PPPOT - IC passed 06/17/08 Notify the field AOGCC representative with intent to plug and abandon Pre -rig prep work: S 1 Pull 2 -3/4" XX Plug @ 8,355' MD. F 2 Evaluate injectivity into the open perfs to determine P &A method. C/F 3 Lay in or Bullhead /Squeeze cement to plug and abandon the perforations. Cement Calculations: 2 -7/8 ", 6.20# liner - .0058 bbls /ft Max TOC - 8,180' MD (5.5" Tubing Cut) Min TOC - 9,280' MD (AOGCC Min.) Bottom of Cement - 9,831' (PBTD) No clean out necessary to meet P &A objectives SBHP: 3,200 psi SBHT: 200 °F S 4 WOC. Drift for jet Cutter. Tag top of cement plug. F 5 CMIT T x IA to 2,500psi. Pressure test the cement plug to 2500 psi after cement reaches sufficient compressive strength, prior to cutting the tubing. E 6 Jet cut 5 -1" tubing @ -8,180' MD. 2' from the top of a pup joint (Ref original completion tubing tally dated 1/14/87). F 7 Circulate well with seawater and cap with diesel thru the cut. CMIT T x IA to 2,500 psi for 30 minutes. MIT -OA to 2000 psi for 30 minutes. D 8 Bleed casing and annulus pressure to 0 psi. W 9 Function tubing and casing lock down screws. Repair and replace as needed. Perform PPPOT -T and PPPOT -IC. ✓ 10 Set a BPV in the tubing hanger. Secure Well O 11 Remove the well house and flow line. Level the pad as needed for the rig. Provide total well preparation cost on the handover form. Proposed Procedure: 1. MIRU. 2. MIT - OA 2000 psi for 30 minutes (begin monitoring OA). CMIT TxIA to 2,500 psi 3. Pull BPV. Circulate out freeze protection and displace well to seawater. Set a TWC and test from below to 1000 psi for 30 minutes (also tests TxIA). Nipple down tree. Nipple up and test BOPE to 3,500psi. Pull TWC. 4. RU and pull the 5 -1/2" tubing from the pre -rig jet cut at -8,180' MD. Spool 2,072' of control line and unknown number of clamps. Test the lower set of pipe rams: 5. Pick up 9 -5/8" casing scraper. RIH to tubing stub at -8,180' MD, ensure casing is clean. POOH. LD scraper assembly. 6. RU E -line, run a 9 -5/8" EZSV w/ GR /CCL for 47# casing. Set the EZSV at -8,130' MD. Rig Down E -line. 7. Pressure test the EZSV to 3,500 psi for 30 minutes and chart. G -23B Permit to Drill Application Page 9 8. Change 9 -5/8" Packoff. S 9. PU 9 -5/8" whipstock, bottom trip anchor and 8.5" window milling assembly (to include full gauge string mills). RIH to the top of the EZSV. Orient and set the whipstock. Swap the well over to 10.7 ppg fresh water LSND milling fluid. 10. Mill a window in the 9 -5/8" casing at -8115' MD' plus 20' of HRZ formation. 11. Perform a LOT. POOH for drilling BHA. 12. MU an 8 -1/2" drilling BHA with DIR /GR/RES /GyroPulse and RIH. Kick off and drill 8 -1/2" intermediate interval to 7" casing point at the top of the Sag River CBU, wiper trip to shoe, circulate well clean and POOH. NOTE: Due to potential of not having clean surveys by TD, GyroPulse will be run. 13. Run and cement a 7 ", 26 #, L -80 drilling liner throughout the 8 -1/2" hole and back into the 9 -5/8" casing with 150' of overlap. Set hanger / liner top packer and displace cement with mud. POOH. 14. M/U a 6 -W DIR/GR /RES/ drilling assembly. P/U additional 4" drill pipe as required to TD the well and RIH to top of the float collar and test the casing to 3,500 psi for 30 minutes. 15. Displace the well to 8.5 ppg Flo -Pro SF fluid 16. Drill out shoe and 20' of new formation and perform an FIT. 17. Drill build section and land well, per directional proposal. POOH to swap BHA. 18. MU a 6 -1/8" RSS BHA with PDC bit and DIR /GR /RES /NEU /DEN. RIH and drill ahead, per directional proposal and rig site geologist, to TD. 19. CBU at TD. Back ream to shoe, MAD passing as required by geologist. Circulate the well clean at the shoe and POOH. 20. Run and partially cement a 4 -1/2 ", 12.6 #, L -80, IBT -M Bonzai liner from TD to 150' inside the 7" shoe. Set the liner top packer and displace the well to seawater. 21. After cement reaches -1000 psi compressive strength, pressure test well to 3500 psi for 30 minutes and chart. 22. Run the 4 -1/2 ", 12.6 #, 13Cr completion tying into the 4 -1/2" liner top. 23. Drop ball & rod and set the production packer and individually test the tubing to 3,500 psi and annulus to 3,500 psi for 30 minutes each. 24. Shear valve and confirm circulation. 25. Set and test a TWC to 1000psi. 26. ND BOPE. NU and test the tree to 5,000 psi (tree will be changed with 4- 1/16 ") 27. Pull TWC. Freeze protect the well to 2,200' TVD. 28. Set a BPV. 29. RDMO. Post -Rio Work: 1. Pull BPV. 2. Pull ball and rod / RHC plug. Set generic GLV design. 3. Install weilhouse, instrumentation, and flowlines. (S -Riser modification WILL be required.) Drilling Engineer: Joshua Mallery (907) 564 -5545 Production Engineer: Chris Zamora (907) 564 -4138 Geologist: Kristin Papp (907) 564 -5256 ATTACH: Current Schematic Pre -Rig Schematic Proposed Schematic G -23B Permit to Drill Application Page 10 _.. .+. •Mr. ^ SAFt I Y NU I t5: IIUKILUN I AL W LLL - 78' CO 9151'. WELLHEAD = McEVOY G-23A * *T X IA COMM. ** ACTUATOR = AXELSON KB. ELEV = 71.69' 41 BF: ELEV = 35.24' ' L ) 1 8222' —17" X 5 -1/2" XO, ID = 4.892" I KOP = 7419' Max Angle = 93° @ 9564' I 2072' I -15 -1/2" OTIS HRQ SSSV LAND NP Datum MD = 9054' 0 (01/15/83), ID = 4.562" Datum TVD = 8800' SS 120" CONDUCTOR ID = ? I ? 2600' H CEMENTED 1 ip GAS LFT MANDRELS 113 -3/8" CSG, 72#, L -80 BUTT, ID = 12.347" H 2695' ST MD TVD DEV TYPE VLV LATCH PORT DATE 6 2999 2999 0 OTIS DMY RK 16 12/12/06 19 -5/8" CSG, 47 #, L -80 NSCC X0 TO L -80 BUTT H 4563' I X 5 5032 5032 0 OTIS DMY RK 20 12/12/06 4 6455 6454 0 OTIS DMY RK 0 01/14/87 3 7452 7448 11 OTIS DMY RK 0 01/14/87 2 8062 8033 23 OTIS DMY RK 0 01/14/87 1 8164 8126 26 OTIS DMY RK 0 01/14/87 I 8231' H5-1/2" OTIS XA SLD SLV , ID = 4.562" I Minimum ID = 2.377" @ 8435' 8290' H PBR TBG SEAL ASSY 1 2-7/8" LINER TOP, PIN ID 8305' H 9 5/8" X 5 -1/2" TN HBBP PKR, ID = 4.75" I _ 8310' H MILLOUT EXTENSION, ID = ? I _---- 8315' 1-1? X 5 -1/2" X0, ID = 4.892" I ® I 8346' I- I5 -1/2" 0118 X NIP, ID = 4.562" I 8355' H5-1/2" X 2 -3/4" HES NP RED, ID = 2.75" I 8355' H2-3/4" XX PLUG w / FILL EXT (10/01/07) I 1 8396' H 5 -1/2" OTIS XN NP, MLLED TO 4.51" (RIG) I 8435' I 2 -7/8" BKR LTP, ID = 3.12" 5 -1/2" TBG, 17 #, L -80 BUTT, .0232 bpf, ID = 4.892" I-L 8437' I-- SEAL BORE & GS PROFLE 'TOP OF 5 -1/2" LNR I 8432' 1 - 1 8440' HMV SEAL ASSY (W /O SEALS) 1 I TOP OF 2 -7/8" LNR H 8435' 19 -5/8" CSG, 47 #, L -80 BUTT, ID = 8.681" H 8665' I • ■ MILLOUT WINDOW (G -23A) 8707' - 8710' f TOP OF WHIPSTOCK H $705 PERFORATION SUMMARY REF LOG: PNL ON 05/22/96 ANGLE AT TOP PERF: 85 @ 9380' ,'S'V• 1 1 Note: Refer to Production DB for historical pert data 111111111111 111111 1 SIZE SPF INTERVAL Opn /Sqz DATE ■••••11 •••••• 2" 4 9380 - 9400 C 09/25/98 N11111V ` 1-11/16" 4 9440 - 9460 0 09/25/98 ' 111111 111111 2" 4 9460 - 9470 C 09/25/98 � R.' • 2" 4 9490 - 9520 C 09/18/98 ∎ ,1 �� 1 111111 •••••• i i!Q..i i I PBTD I 9831' 1Y/1 : 1 : 1 ' 5-1/2" LNR, 17 #, L -80 U4S, .0232 bpf, ID = 4.892" H 10641' 1 2 -7/8" LNR, 6.16 #, L -80 FL4S, .0058 bpf, ID = 2.441" H 9896' I DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 01/15/87 ORIGINAL COMPLETION 08/21/07 JCM/PJC OTIS NP CORRECTIONS WELL: G-23A 02/23/96 CTD SIDETRACK "A" 10/02/07 CJN/TLH XXN PLUG PULLED (8/22/07) PERMIT No: 1960200 06/19/05 DAV /PJC GLV CORRECTION (9 /20/98) 11/17/07 RMH/PJC SET XX PLUG w / FILL (10/01/07) API No: 50 -029- 21680 -01 12/17/06 JCM/PJC GLV C/0 (12/12/06) 04/13/08 NH/PJC DRAWING CORRECTIONS SEC 12, T11N, R13E, 2542' FSL & 1973' FEL 12/24/06 JLJ /PAG SET FX PLUG @ 8344' SLM 1 07/21/07 TA /PJC PULL PX/ SET X NP & XX PLUG BP Exploration (Alaska) WELLHEAD = McE/OY G Pre Rig AHrCI T IVU I to: M./MIL-UN M./MIL-UN IHL WGLL - / U JG9L ACTUATOR= AXELSON * *TX IACOMM. ** KB. ELEV = 71.69' BF. ELEV = 35.24' KOP= 7419' I L. ) I 8222' 7" X 5 -1/2" XO, ID = 4.892" Max Angle = 93° @ 9564' Datum M7 = 9054' 2072' 5-1/2" OTIS HRQ SSSV LAND NIP Datum TVD = 8800' SS O (01/15/83), ID = 4.562" I 2600' HCEMENTED 20" CONDUCTOR, ID = ? ? G S LIFT MAND ELS 13 -3/8" CSG, 72#, L -80 BUTT, ID = 12.347" —I 2695' 1ST MD TVD DEV TYPE VLV LATCH PORT DATE 6 2999 2999 0 OTIS DMY RK 16 12/12/06 5 5032 5032 0 OTIS DMY RK 20 12/12/06 9 -5/8" CSG, 47 #, L -80 NSCC XO TO L -80 BUTT —I 4563' X X 4 6455 6454 0 OTIS DMY RK 0 01/14/87 3 7452 7448 11 OTIS DMY RK 0 01/14/87 2 8062 8033 23 OTIS DMY RK 0 01/14/87 1 8164 8126 26 OTIS DMY RK 0 01/14/87 'Tubing Cut H 8,180' I 8231' —15-1/2" OTIS XA SLD SLV, ID = 4.562" ' 8290' —I PER TBG SEAL ASSY 8305' —I 9 5/8" X 5 -1/2" TIW HBBP PKR, ID = 4.75" 8310' —I MILLOUT EXTENSION, ID = ? _— 8315' — I? X 5 -1/2" XO, ID = 4.892" Minimum ID = 2.377" @ 8435' 8346' — {5 -1/2" OTIS X NIP, ID = 4.562" 2 -7/8" LINER TOP, PIN ID I 8355' H5 -1/2" X 2 - 3/4" HES NIP RED, ID = 2.75" I ' 8396' — 15 -1/2" OTIS XN NIP, MILLED TO 4.51" (RIG) 8435' —12-7/8" BKR LW, ID = 3.12" 5-1/2" TBG, 17 #, L -80 BUTT, .0232 bpf, ID = 4.892" I—, 8437' }-- SEAL BORE & GS PROFILE 1 TOP OF 5 -1/2" LNR — I 8432' +' 8440' —I TM/ SEAL ASSY (W /O SEALS) TOP OF 2 -7/8" LNR I— 8435' 19 -5/8" CSG, 47 #, L -80 BUTT, ID = 8.681" I—{ 8665' • ■ MIL LOUT WINDOW (G -23A) 8707' - 8710' TOP OF WHIPSTOCK —I 8705' iii PERFORATION SUMMARY • REF LOG: PNL ON 05/22/96 • ANGLE AT TOP PERF: 85 @ 9380' ` • g Note: Refer to Roduction DB for historical perf data ,��:. SIZE SPF INTERVAL Opn /Sqz DATE 11111111 . 2" 4 9380 - 9400 09/25/98 11 1-11/16" 4 9440 - 9460 0 09/25/98 1 1 1111 1 1 1 2" 4 9460 - 9470 09/25/98 ' 111111 111111 2" 4 9490 - 9520 09/18/98 1 0�� 11111111• ..411111 1 1 Ct.. Ake PBTD 9831' wear 4 1 5-1/7' LNR, 17 #, L -80 U4S, .0232 bpf, ID = 4.892" H 10641' 2 -7/8" LNR, 6.16 #, L -80 FL4S, .0058 bpf, ID = 2.441" H 9896' DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 01115187 ORIGINAL COM PLETION 08/21/07 JCM/PJC OTIS NIP CORRECTIONS WELL: G -23A 02/23196 CTDSIDETRACK "A" 10/02/07 CJNltLH XXN PLUG PULLED (8/22/07) PERMT No: 1960200 06/19/05 DAV /PJC GLV CORRECTION (9/20/98) 11/17/07 RMWPJC SET XX PLUG w / FILL (10/01/07) AR No: 50- 029 - 21680 -01 12/17/06 JCM/PJC GLV C/O (12/12/06) 04/13/08 NWPJC DRAWING CORRECTIONS SEC 12, T11 N, R13E, 2542' FSL & 1973' FEL 1224/06 JLJ /PAG SET PX PLUG @ 8344' SLM 07/21/07 TA /PJC FULL PX/ SET X NIP & XX PLUG _ BP Exploration (Alas ka) ( WELLHEAD 4 1/16" `"" G-3B Proposed ACTUATOR = KB. ELEV = • BF ELEV = — SAFETY NOTES: KOP= 8115' Max Angle = ' • 2200' J-- I4 - 1/2" HES X NIP, ID = 3.813" Datum MD = _ Datum TVD = 2600' —I Cemented 113 -3/8" CSG, 72 #, L -80 BUTT -] 2695' 7965' I — 9 - 5/8" X 7" BKR ZXP LNR TOP PKR HGR I 9 -5/8" BOT Whipstock —I 8116' 9 -5/8" EZSV Plug 1H 8130' I5 -1/2" Tubing Stub I-1 8180' I ' 8208' H4-1/2" HES X NIP, ID = 3.813" I _r ∎ ∎/ R I 8238' H BKR S -3 L -80 PKR 9 -5/8" CSG, 47 #, L -80, ID = 8.681" 1--1 8666' I A • • • ■ . '. r-1 8271' H4 -1/2" HES X NIP, ID = 3.813" ( 5-1/T LNR, 17 #, L -80, ID = 4.892" — I 10641' r --- 8343' H4-1/2" HES XN NIP, ID = 3.725" I I4 -1/2" TBG, 12.6 #, 13Cr, .0152 bpf, ID = 3.958" H 8355' r 8355' — 4-1/2" WLEG, ID = 3.958" •= 8363' — 7" X 5" BKR ZXP LNR TOP PKR, HGR w /TIEBACK 11.15' X 5.25" 17" LNR, 26#, L -80, .0383 bpf, ID = 6.276" H 8613' I I • PERFORATION SUMMARY I ANGLE AT TOP PERF: Note: Refer to R DB for historical pert data I SIZE SPF INTERVAL Opn/Sqz DATE IPBTD H 11374' I wy —∎ I4 - 1/2" LNR, 12.6 #, L - 80, .0152 bpf, ID = 3.958" I — I 11464' 1 • a • DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 01115/87 ORIGINAL COM PLETION 08 /21/07 JCM/PJC OTIS NIP CORRECTIONS WELL: G 23B 02123196 CTD SIDETRACK "A" 10/02/07 CJN/TLH XXN PLUG PULLED (8/22/07) PERMIT No: XXXXXXXXX UX UX 06/19/05 DAV /PJC GLV CORRECTION (9/20/98) 11/17/07 RMWPJC SET XX PLUG w / FILL (10/01/07) API No: 50 -029- 21680 -02 12/17/06 JCM/PJC GLV C/O (12/12/06) 04/13/08 NHIPJC DRAWING CORRECTIONS SEC 12, T11 N, R13E, 2542' FSL & 1973' FEL 12/24/06 JLJ /PAG SET PX PLUG @ 8344' SLM 10/26/09 JEM Proposal 0721/07 TA /PJC PULL PX/ SET X NIP & XX PLUG BP Exploration (Alas kaj bp 0 G -23B (P3b) Proposal Schlumberger Report Date: November 10, 2009 Survey 1 DLS Computation Method: Minimum Curvature / Lubinski Client: BP Exploration Alaska Vertical Section Azimuth: 285.000° Field: Prudhoe Bay Unit - WOA Vertical Section Origin: N 0.000 ft, E 0.000 ft Structure / Slot: G -PAD / G - 1 111 01®9 TVD Reference Datum: Rotary Table Well: G TVD Reference Elevation: 63.16 ft relative to MSL Borehole: Plan G - 236 Sea Bed 1 Ground Level Elevation: 34.66 ft relative to MSL UWIIAPI#: 500292168002 Ap. P Magnetic Declination: 22.149° Survey Name 1 Date: G - 23B (P3b) / November 10, 2009 Total Field Strength: 57693.458 nT Tort / AHD 1 DDI I ERD ratio: 232.581° / 3182.59 ft / 5.973 / 0.352 Magnetic Dip: 80.948° Grid Coordinate System: NAD27 Alaska State Planes, Zone 04, US Feet Declination Date: June 10, 2010 • Location Lat/Long: N 70.32173435, W 148.71685715 Magnetic Declination Model: BGGM 2009 Location Grid N!E YIX: N 5968911.000 ftUS, E 658257.000 ftUS North Reference: True North Grid Convergence Angle: +1.20822814° Total Corr Mag North -> True North: +22.149° Grid Scale Factor: 0.99992845 Local Coordinates Referenced To: Well Head Measured Azimuth Vertical NS EW Mag 1 Gray Directional Zone Of Zone Of Comments Inclination Sub-Sea TVD TVD DLS Northing Easting Depth True Section True North True North Tool Face Difficulty Exclusion Exclusion I (ft ) (deg) (deg) (ft) (ft) (ft) (ft) (ft) (deg) t (deg/100 ft) Index ( deg) Alert (ftUS) I (ftUS ) Tie - In Survey 8108.86 24.92 163.76 8011.76 8074.92 - 150.02 - 202.37 101.08 18.20R 0.00 4.09 32.47 5968710.82 658362.32 Top Whipstock 8115.00 25.09 163.89 8017.32 8080.48 - 151.36 - 204.86 101.81 70.00L 2.90 4.10 32.65 5968708.35 658363.09 Base Whipstock 8131.00 25.80 159.74 8031.77 8094.93 - 155.12 - 211.39 103.95 - -- 12.00 4.13 33.02 5968701.87 658365.38 Cry 4/100 8144.00 25.80 159.74 8043.47 8106.63 - 158.39 - 216.70 105.91 89.99L 0.00 4.14 33.02 5968696.60 658367.45 TJC 8177.91 25.84 156.63 8074.00 8137.16 - 167.24 - 230.41 111.40 87.19L 4.00 4.17 32.78 5968683.01 658373.22 8200.00 25.90 154.61 8093.87 8157.03 - 173.35 - 239.18 115.38 85.37L 4.00 4.19 32.65 5968674.32 658377.39 8300.00 26.50 145.64 8183.64 8246.80 - 204.44 - 277.34 137.34 77.32L 4.00 4.28 32.32 5968636.64 658400.15 TJB 8322.78 26.71 143.67 8204.00 8267.16 - 212.29 - 285.66 143.24 75.55L 4.00 4.30 32.31 5968628.45 658406.22 8400.00 27.63 137.21 8272.72 8335.88 - 241.01 - 312.79 165.70 69.80L 4.00 4.37 32.43 5968601.80 658429.24 8500.00 29.24 129.50 8360.68 8423.84 - 282.87 - 345.36 200.31 63.03L 4.00 4.44 32.98 5968569.97 65 4.53 End Cry 8512.99 29.48 128.56 8372.00 8435.16 - 288.68 - 349.37 205.26 - -- 4.00 4.45 33.09 5968566.06 65 .56 TSAG 8513.00 29.48 128.56 8372.01 8435.17 - 288.69 - 349.37 205.26 - -- 0.00 4.45 33.09 5968566.06 658469.56 7" Csg 8513.01 29.48 128.56 8372.02 8435.18 - 288.69 - 349.37 205.26 - -- 0.00 4.45 33.09 5968566.06 658469.57 TSHU 8556.64 29.48 128.56 8410.00 8473.16 - 308.37 - 362.76 222.05 - -- 0.00 4.47 33.09 5968553.03 658486.63 Cry 12.5/100 8577.99 29.48 128.56 8428.59 8491.75 - 318.00 - 369.31 230.26 8.06L 0.00 4.48 33.09 5968546.66 658494.98 8600.00 32.20 127.84 8447.48 8510.64 - 328.37 - 376.28 239.13 7.44L 12.50 4.51 35.61 5968539.87 658503.99 TSAD 8653.50 38.84 126.46 8491.00 8554.16 - 357.15 - 395.02 263.91 6.32L 12.50 4.58 41.86 5968521.67 658529.16 8700.00 44.62 125.55 8525.69 8588.85 - 386.04 - 413.19 288.95 5.64L 12.50 4.64 47.37 5968504.02 658554.57 8710.08 45.88 125.38 8532.78 8595.94 - 392.75 - 417.35 294.78 - -- 12.50 4.65 48.57 5968499.99 658560.49 8742.85 45.88 125.38 8555.60 8618.76 - 414.80 - 430.97 313.96 104.42R 0.00 4.67 48.57 5968486.78 658579.95 8800.00 44.52 135.27 8595.92 8659.08 - 451.38 - 457.11 344.82 97.44R 12.50 4.74 48.63 5968461.29 658611.36 WellDesign Ver SP 2.1 Bld( users) G- 23 \G -23 \Plan G- 23B \G -23B (P3b) Generated 11/10/2009 3:57 PM Page 1 of 2 Measured Azimuth Vertical NS EW Mag 1 Gray Directional Zone Of Zone Of Comments Inclination Sub-Sea TVD TVD DLS Northing Easting Depth True Section True North True North Tool Face Difficulty Exclusion Exclusion (ft ) (deg) (deg) (ft) (ft) (ft) (ft) (ft) (deg) (deg /100ft ) _ Index (deg) Alert (ftUS) (ftUS) TCGL 8840.61 44.09 142.52 8625.00 8688.16 - 474.90 - 478.45 363.45 92.25R 12.50 4.78 49.16 5968440.36 658630.43 8900.00 44.29 153.17 8667.65 8730.81 - 505.16 - 513.40 385.41 84.60R 12.50 4.85 50.60 5968405.88 658653.12 BCGL 8939.82 44.98 160.19 8696.00 8759.16 - 522.48 - 539.06 396.47 79.60R 12.50 4.89 51.98 5968380.46 658664.71 9000.00 46.80 170.36 8737.94 8801.10 - 543.79 - 580.76 407.36 72.51R 12.50 4.94 54.65 5968339.01 658676.48 25N 9059.94 49.44 179.78 8778.00 8841.16 - 558.89 - 625.12 411.11 66.21R 12.50 5.00 57.89 5968294.73 658681.17 9100.00 51.61 185.63 8803.48 8866.64 - 565.45 - 655.99 409.62 62.49R 12.50 5.03 60.33 5968263.84 658680.33 22N 9173.87 56.30 195.48 8847.00 8910.16 - 569.91 - 714.54 398.55 56.68R 12.50 5.09 65.30 5968205.08 658670.50 9200.00 58.14 198.70 8861.15 8924.31 - 569.10 - 735.53 392.09 54.94R 12.50 5.11 67.17 5968183.95 658664.49 21N 9241.27 61.19 203.52 8882.00 8945.16 - 565.29 - 768.74 379.25 52.51R 12.50 5.15 70.24 5968150.49 658652.35 9300.00 65.81 209.90 8908.22 8971.38 - 554.58 - 815.62 355.60 49.66R 12.50 5.19 74.78 5968103.12 6586 9.69 PGOC 9330.20 68.28 212.99 8920.00 8983.16 - 546.70 - 839.34 341.09 48.45R 12.50 5.22 77.18 5968079.10 65 9 TZ1B 9341.24 69.20 214.10 8924.00 8987.16 - 543.43 - 847.90 335.41 48.05R 12.50 5.23 78.07 5968070.42 65 .19 9400.00 74.20 219.77 8942.46 9005.62 - 522.57 - 892.44 301.88 46.26R 12.50 5.27 82.84 5968025.19 658577.61 9500.00 83.00 228.83 8962.24 9025.40 - 474.60 - 962.37 233.47 44.46R 12.50 5.34 88.90 5967953.84 658510.69 G -23B Tgt 1 9578.05 90.00 235.65 8967.00 9030.16 - 427.49 - 1010.00 171.94 90.00R 12.50 5.40 82.46 5967904.92 658450.19 9600.00 90.00 238.39 8967.00 9030.16 - 412.80 - 1021.95 153.53 90.00R 12.50 5.41 82.71 5967892.59 658432.04 9700.00 90.00 250.89 8967.00 9030.16 - 336.75 - 1064.69 63.35 90.00R 12.50 5.48 84.04 5967847.96 658342.78 9800.00 90.00 263.39 8967.00 9030.16 - 248.51 - 1086.89 -33.95 90.00R 12.50 5.54 85.66 5967823.71 658245.97 9900.00 90.00 275.89 8967.00 9030.16 - 152.27 - 1087.51 - 133.75 90.00R 12.50 5.60 87.47 5967820.99 658146.22 End Cry 9972.22 90.00 284.92 8967.00 9030.16 -80.36 - 1074.48 - 204.71 - -- 12.50 5.63 88.86 5967832.52 658075.00 Cry 4/100 10322.45 90.00 284.92 8967.00 9030.16 269.87 - 984.30 - 543.13 90.00L 0.00 5.73 88.86 5967915.54 657734.78 G -23B Tgt 2 10360.47 90.00 283.40 8967.00 9030.16 307.89 - 975.00 - 580.00 90.00L 4.00 5.74 88.63 5967924.06 657697.73 End Cry 10399.28 90.00 281.85 8967.00 9030.16 346.66 - 966.52 - 617.87 - -- 4.00 5.76 88.39 5967931.74 657659.69 TD / 4 -1/2" Lnr 11453.88 90.00 281.85 8967.00 9030.16 1399.66 - 750.00 - 1650.00 - -- 0.00 5.97 88.39 5968126.43 656623.30 Survey Error Model: BP ISCWSA version 10 *** 3 -D 95.00% Confidence 2.7955 sigma Surveying Proa: MD From (ft) MD To (ft 1 EOU Freq Survey Tool Type Borehole -> Survey 0.00 22.75 Act -Stns BP_ZERO -Depth Only G -23 -> G -23 0 22.75 28.50 Act -Stns BP_ZERO G -23 -> G -23 28.50 8108.86 Act -Stns BP_GCT MS G -23 -> G -23 8108.86 8115.00 1/100.00 BP_GCT MS Plan G -23B -> G -23B (P3b) 8115.00 8400.00 1/100.00 BP_INC +TREND Plan G -23B -> G -23B (P3b) 8400.00 8513.01 1/100.00 BP_MWD +IFR:AK^^1 Plan G -23B -> G -23B (P3b) 8513.01 11453.88 1/100.00 BP MWD +IFR +MS^ ^1 Plan G -23B -> G -23B (P3b) Legal Description: Northing (Y) fftUSl Easting (X) fftUSl Surface : 2541 FSL 1973 FEL S12 T11 N R13E UM 5968911.00 658257.00 G -23B Tgt 1 : 1531 FSL 1801 FEL S12 T11 N R13E UM 5967904.92 658450.19 G -23B Tgt 2 : 1566 FSL 2553 FEL S12 T11 N R13E UM 5967924.06 657697.73 TD / BHL : 1791 FSL 3623 FEL S12 T11 N R13E UM 5968126.43 656623.30 WellDesign Ver SP 2.1 Bld( users) G- 23 \G -23 \Plan G- 23B \G -23B (P3b) Generated 11/10/2009 3:57 PM Page 2 of 2 by . 0 Schlumberger . WELL FIELD STRUCTURE G -23B (P3b) I Prudhoe Bay Unit - WOA G -PAD Magnetic Parameters Surface Location NAD27 Alaska State Planes. Zorn 04, US Feet Miscellaneous Model. 6GGM 2009 Dip'. 80.948° Date. June 10, 2010 Lat N70 19 18 244 00,100g'. 596891100 %US Grid Cony +1.20822814° Slot. 0 -23 TVD Ref: Rattily Table (63.16 % above MSL) Mag Dec: +22149° FS'. 57693.5 nT Lon: W148 43 0 666 Easing'. 658257.00 %US Scale Fact 0.999928451 Plan. G -236 (P3b) Srvy Date'. November 10. 2009 -600 -300 0 300 600 900 1200 1500 -23 • Tie -In Survey Top Whipstock Base Whipstock t 8100 8100 Cry 4/1 _.._.._.._. ._.._.._.._.._.._.._.._.._.._.. End Cry 00 8400 7" Ca' ' '. 8400 C7 _.._.._.._.._.._ 3.._.._.. ._ _ ... .._.._.._.._.._.._.._.._ ._.._.._.._.._.._.._.._..._.._.._.._.._.._.._.._...._.._.._.._... ._.._.. 7 Cry 12.5/100 ' c II ._.._.._.._.._....._.._.._..... _.._.._.._.._.._.._.._.._.._.. 9 -518" Csg as U co Ci 6700 _.._.._.._.._.._ {.._.._.._. e , �/ .._.._..♦.._.._.._.._.._.._.._ .._....._.._.._.._.._.._.._.._. _.._.._.._.._.._.._.._.._ ._.._.._.._.._.._.._.._.._ ._.._.._.._.._.._.._.._...._.._.._.._.._.._.. _.._..,..._.._.._.._.._.._.._.. 8700 _.._.._.._.._.._ _.._.._.._..a.._.._.._.._.._.. 6723B Tgt2 ._.._.._.._.._.._.._.._ ._.._.._.._. ._.._.._.._..�.._.._.._.._.._.. _.. _.._ .s• _ • TD/4 -1 @" Lnr .. _.. _..r..._.._.._.. _.. _.._.._.. End Cry Cry 4N 00 End Cry G -2313 info) .._.._.._ ._.. G -2313 Tgt 1 _.._.._.._.._.._ .._.._.._.._.._.._.•_.._.._ ... _.._.._.._.._.._.._ ._.._.._.._.._.._.._.._. .._.._.._.._.. _.._.._ _.._ ._.._.. _.._.._.._.._.. 9000 151101 SIISII.II., .I ,, ISIS 111•111•11.116 610 I.II.I1.I1.,1. I.II.If 1I.lI.II.II.II.I1.11. .I all IISMIIII.IISSINSI.II. 1. IIS SIS II. II. ISS IIS SI. 11. 115• IS II. II. II .II.II.11011SII.lIS1I.II.I1.I, I.II.IIrII.II.II.II.•I.II.II.I, 9000 -600 -300 0 300 600 900 1200 1500 Vertical Section (ft) Azim = 285 °, Scale = 1(in):300(ft) Origin = 0 N / -S, 0 E / -V by - Sehlumberger WELL FIELD STRUCTURE G -23B (P3b) I Prudhoe Bay Unit - WOA G -PAD Magneto Parameters Surface Location NAD27 Alaska State Planes. Zane 04, US Feet I Miscellaneous rlN Model: BGGM 2009 Dip. 80.948° Date. June 10, 2010 Cat N701918.244 Nong. 598891100 BUS Grid Cony'. 01.20822814 Skit. G -23 TVD net Rotary TaER (63.168 above MSL) Mag Dec 0 22.149° FS. 57693.5nT Lon W148430.686 Easting 658257 CO (WS Scale Fact :0.999928451 Plan: G -23B (P3b) Srr Date: November 10. 2009 -1800 -1500 -1200 -900 -600 -300 0 300 600 -23 Tie -In Survey •N Top Whipstock End Gry • Base Whipstock -300 Ali 7e Still cry aaob -300 / e Civ 12.5/100 ® s G -238 (P3b) 9-5/8 Csg A A -600 To / anre Lnr -600 Z O O ..-23A A ch End Cry C G -23B Tgt 2 Cry 4/100 II irli a) -900 •• -900 co v v G-236 Tqt 1 -1200 End Cry -1200 -1500 •° -1500 • -23 -1800 -1500 -1200 -900 -600 -300 0 300 600 «< W Scale = 1(in):300(ft) E >» Project: Prudhoe Bay c Site: PB G Pad ' o ,a Well: G -23 N C Wellbore: Plan G -238 - 150 « G � Design: Plan #3 G -23B s el 0 'y n ITVD depths displayed from KOP depth and below only' " N \ k et,) \ -150 b ' �� , q. 80 -300 q &� \ / --AK: e \ -450 0 ''- qli a 0 \ li ,,�' 8G dQ co 111 88 ,------ -0 ,9 cg \ 8 7 _0 + ,h .../ J 0 \ _____, 0., :5) -750 o -900 m 854. yo \ ''''''' N\ \ \ < 0 o s - 6-238 FII -1 4 . _..____ \ -1 .. S' \ \ ..., ' \ q . '5% Sr A 0 fi ss 6+ QO. ^oG aQ' ^, �G,1�P`.,. �O`�, ik P t,Og0 G -1 I I I oc I I o� I K,a,G 1u 1 I I l t � 1 1 I I I GC. v 04/ p �� i -2100 -1950 -1800 -1650 act - 1350 $° (0 -1050 -900 -750 -600 -450 -300 -150 0 150 300 450 °t0 G 7 0 `'y ° 9 West( -) /East( +) (300 ft/in) b eq 0 It- 410 0 \ ' i ---'--''..--'-''.-. ' -.-- -'---,__ 44114 / i , . . b ill) 0 -/... v.... ._,._ . . . ._, . ....., ..,,, _ STANDARD ALASKA PRODUCTION COMPANY WELLHEAD LOCATION DATA 1) WELL: G23 FIELD: 6/26/86 2) Well Head Location 2542 'from South line 1973 'from East line Section 12 , T 11 N, R 13 E, UPM X = 658.257 Y = 5.968, 911 ASP Zone 4 LAT =70 -19- 18.247 N, LONG =148 -43- 00.690 N 3) Local Benchmark Elevation G3 38.65 Ft. AMSL 4) Top Edge of Cellar SE Cor. 34.66 Ft. AMSL 5) Kelly_Bushing to Base Flange* 36.45 Ft. AMSL 6) Kelly Bushing to Ground Level* 37.03 Ft. AMSL 7) Base Flange Elevation 35.24 Ft. AMSL 8. Kelly Bushing Elevation 71.69 Ft. AMSL *Measured by Drilling Foreman NOTES: 1) The surveyor should fill in Items 2, 3, and 4. 2) The completed form should be returned to Drilling Dept. for distribution. CIRCULATION: a►'°` �` North Slope Production Engineering (North Slope, BOC) - 1 k‘;: '° •• � . ;f:i.� Reservoir Engineering Operations (M89 -2) - 1 or* , 49tH North Slope - to Rig for Posting (North Slope, BOC) - 2 • •..... ..... , �; 1 Well Records (LR2 -1) - 10 Well Files (MB12 -1) - 1 f • • • Drilling, Technical Assistant (MB12 -1) - 1 f • ' • �S•5 Dri Completion Technical Assistant (MB12 -1) - 1 4 •.,.• • zwD I9 fe'�3� TRH I- 6" CAMERON 0-23 A 9 AF*1 0 @ 9604 ON X OA ELL - 00 ACTUATOR = AXELSON WELLHEAD = McEVOY KB. ELEV = 71.69' BF. ELEV = 35.24' KOP = 7419' Max Angle = 93 © 9564' ® I 2072' H 5 -1/2" OTIS SSSV LAND NP, ID = 4.562" I Datum MD = 9054' I 2600' H CEME NTED I Datum TVD= 8800' SS GAS LIFT MANDRELS 13-3/8" CSG, 72 #, L-80, ID = 12.347" H ( 2695' i ST MD TVD DEV TY PE VLV LATCH PORT DALE 1 2999 3062 0 CA- RK �� 2 5032 5095 0 CA- RK n I it 3 6454 6518 0 CA- RK 4 7452 7440 11 CA- RK I 9-5/8" CSG, 47 #, L -80, ID= 8.681" H 4563' I / 5 8062 8024 23 CA- RK 6 8164 8117 26 CA- RK TOP OF 9 -5/8" CSG H 4563' I 8222' H 5 -1/2" OTIS XA SLIDING SLV, D = 4562" I I I Minimum ID = 2.377" @ 8435' 8281' H PBR TBG SEAL ASSY I 2 -7/8" LINER TOP, PIN ID 4 I 8306' H 95/8" X 5-1/2" TIW I-BBP R(R, ID = 4.75" I ' I I 8346' I--I 5 -1/2" OTIS X NIP, ID = 4.562" I ' ' I 8387' H 5 -1/2" OTIS XN NIP, MILLED TO 4.51" I I 5-1/2" TBG, 17 #, L -80, 0.0232 bpf, ID = 4.892" H 8425' I I I I 8424' H TIW SEAL ASSY (W /O SEALS) I TOPOF5 -1/2 "LNR 8431' ( $435' 2 -7/8" BAKER LNR TOP, 3.00" LOP 2 -7/8" LNR H 8435' SEAL BORE & GS PROFILE I 9-5/8" CSG, 47 #, L -80, ID= 8.681" H 8665' I • 8436' H TM/ SEAL NIP(W /O SEALS) I PERFORATION SUMMARY REF LOG: PNL ON 05/22/96 5-1/2" SIDETRACK WNDOW ANGLE AT TOP PERF: 85 @ 9380' 8711' - 8718' Note: Refer to Production DB for historical perf data SEE SPF INTERVAL Opn/Sqz DATE 2" 4 9380 - 9400 S 09/25/98 1- 11/16" 4 9440 - 9460 0 09/25/98 2" 4 9460 - 9470 S 09/25/98 2" 4 9490 - 9520 S 09/18/98 I TOP OF WHIPSTOCK H 8709' PBTD 10598' r4'�/4,��'1 44' 15-1/2' LNR, 17 #, L -80, 0.0232 bpf, ID = 4.892" 10641' PBTD 9831' ( `•��*. • I 2 -7/8" LNR 6.16 #, L-80, 0.0058 bpf, ID = 2.441" H 9$96' 1 • DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 01/15/87 ORIGINAL COMPLETION 02/09/03 A1D /1P DELETE WAIVER SAFETY NOTE WELL: G -23A 02/23/96 CTD SIDETRACK COMPLETION PERMIT No: 1960200 02/15/01 SIS-Is I COM/ ERTED TO CANVAS API No: 50- 029 - 21680 -01 03/07/01 SIS-LG FINAL SEC 12, T11N, R13E 02/01/02 RNITP CORRECTIONS 10/04/02 BMVTP WAIVERSAFETY NOTE BP Exploration (Alaska) • • Oilfield Services, Alaska Schlumberger Drilling & Measurements Schlumberger 2525 Gambell, Suite 400 Anchorage, AK 99503 Tel (907) 273 -1766 Fax (907) 561 -8367 Tuesday, November 10, 2009 Josh Mallery PBU G -23B (P3b) BP Exploration (Alaska) Inc. Close Approach Analysis We have examined the potential intersections of subject well with all other potentially conflicting wells, according to the BPA Directional Survey handbook (BPA -D -004) dated 09/99. Method of analysis: 1. A list of wells to be analyzed is created in Compass by performing a global scan with an initial search radius of two hundred feet with an increment of one hundred feet for every one thousand feet of measured depth in the subject well. 2. Wells are analyzed using the Compass Anti - collision module (BP Company setup) with major risk safety factors applied. For problem wells that are plugged and abandoned or that can be shut in, risk -based safety factor may be used, with client notification. 3. All depths are relative to the planned well profile. Survey Program: Instrument Type Start Depth End Depth GCT MS 32.96' and 8,108.86' and INC + TREND 8,108.86' and 8,400.00' and MWD + IFR:AK 8,400.00' and 8,513.00' and MWD 8,513.00' and 9,000.00' and MWD + IFR + MS 8,513.00' and 11,453.88' and Close Approach Analysis results: Under method (2), note. Note: G -10A fails the major risk rule. It has been evaluated with BP TCRW and passes with a 1:5.8. A 1:10 risk rule has been applied in Compass, and passes now. It is also recommended to run a gyro out of the KOP from the whipstock to the 7" casing point due to magnetic interference from the mother bore well. There will not be enough separation footage drilled to get clean MWD surveys to perform the IFR multi- station analysis. Gyropulse (gyro while drilling) has been suggested. All data documenting these procedures is available for inspection at the Drilling & Measurements Directional Planning Center. Close Approach Drilling Aids to be provided: A drilling map and traveling cylinder will be provided. Checked by: Scott DeLapp 11/10/2009 - - -- - - - - -- BPPASSPORT 4111 — Anticollislon Report - - - - -- Company: North America - ALASKA - BP Local Co- ordinate Reference: Well 0-23 Project: Prudhoe Bay TVD Reference: G -23B plan @ 63.16ft (Nabors XES) Reference Site: - PEI G Pad — -MD Reference: - G-- 23B-piarr ;16ft EEC) Site Error: 0.00ft North. Reference: True G-23- _— — — — - - - - Minimum- Curvature Well Error: 0.00ft Output errors are at 1.00 sigma Reference Weilbore Plan G-23B Database: ` _ _ EDM 16 - Anc Prod - WH24P Reference Design: Plan #3 G -23B Offset TVD Reference: Offset Datum -Reference-- — Plan #3 C 23B -- — -- - Filter type: GLOBAL FILTER APPLIED: All wellpaths within 200'+ 100/1000 of refen Interpolation e ms: MD Interval 5.00ff Error Model: ISCWSA Depth Range: 8,115.00 to 11,453.88ft Scan Method: Tray. Cylinder North —Results-Limited-by: Maximum- center - center distance of- 4,34 -254f Error Surface: Elliptical Coni S �o Da of �0 /26/2009 __ - T , From To (ft) "eft} Survey (Wenbore) - —___ _ T - OtRame Description — - 32.96 8,108.86 1 : SchlumbergerGCTmultishot(G -23) GCT -MS Schlumberger GCT multishot 8,108.86 8,400.00 Plan #3 G -23B (Plan G-23B) INC +TREND Inclinometer + known azi trend 8,400.00 8,513.00 Plan #3 G -23B (Plan G-23B) MWD MWD - Standard 8,513.00 9;000:1 0 PIan#3 =231 jPlarr& — 1v1WD -- MWD = Standard 8,513.00 11,453.88 Plan #3 G -23B (Plan G -23B) MWD +IFR +MS MWD + IFR + Multi Station 11/10/2009 3 :17 4PM Page 2 of 4 COMPASS 2003.16 Build 71 BPPASSPORT Anticollision Report Company: North America - ALASKA - BP Local Co- ordinate Reference: Well G -23 Project: Prudhoe Bay ND Reference: G -23B plan @ 63.16ft (Nabors XES) Refurence Site. - PB G -Pad- - MU - Refer arwe: - - 643B-ptarr c, 03 46ft (Nabors XES) Site Error: 0.00ft North Reference: True - - - -G 23 - -- - - - -- - - -Survey - Minimum- Curvature - -- - - - - -- - . Well. Error: O.00ft Output errors are at 1.00 sigma Reference Weilbore Plan G -236 Database: EDM .16- Anc Prod- WH24P___ _ Reference Design: Plan #3 G -23B Offset ND Reference: Offset Datum SUr►mary - - -- - - - - - - __ Reference Offset Centre to No-Go Allowable M easured Measured Centre Distance Deviation Warning Site Name Depth Depth Distance (ft) from Plan - - Offset-WeW-- Wellbore- -- Design -- _ ____ (ft) - (ft) -- - - (ft) - -- PB G Pad G =03 = 0=f13= G=03 1 0,43904 280.00 30&86 18244 - 1 34.60 Pass - Major Risk G-03 - G -03A - G -03A 8,300.00 8,405.00 536.00 239.07 308.97 Pass - Major Risk G- 04 _G -04 - G -04 Out of range G -04 - G -04A - G -04A Out of range G -04 - G -04B - G -04B Out of range -G-05 - -G-05 - --C -05 - Out of range G -06 - G -06 - G -06 Out of range G -06 - G -06A - G -06A Out of range G -07 - G -07 - G -07 Out of range G -08 - G -08 - G -08 Out of range -Out -of range- 0-09 - G -09 - G -09 Out of range G -09 - G -09A - G -09A Out of range G -U9 - L4-09B - G -096 - Out of range G-10 - G -1 OA - G -1 OA 11,453.88 10,525.00 157.37 2.14 156.93 Pass - Minor 1/10 -- -_ --- A -10 - G -10C: - GAOL -- - -_- 11 385.11- - 10,355110__ 399 14 - -- 370 83 -- 29 55 Pass - Major_ Risk_ G-23 - G -23 - G -23 8,396.91 8,410.00 32.93 117.11 -76.91 FAIL - Major Risk G -23 - G -23A - G -23A 8,396.91 8,410.00 32.93 117.11 -76.91 FAIL - Major Risk G= G=4 = G=2 - Out of G -24 - G -24A - G -24A Out of range G -24 - G- 24APB1 - G- 24APB1 Out of range G -25 - G -25 - G -25 Out of range G -25 - G -25A - G -25A Out of range 0-25 - G- 25APB G -25APB - Outof-range G-25 - G- 25APB2 - G- 25APB2 Out of range G -25 - G -25B - G -25B Out of range G -25 - G- 25BPB1 - G- 25BPB1 Out of range G -26 - G -26 - G -26 Out of range G- 26-- -G -26A - -G -26A Out-of-range- 0-26 - G -26B - G -26B Out of range G -27 - G -27 - G -27 10,866.96 9,375.00 167.38 153.50 49.12 Pass - Major Risk G -27 - G -27A - - G =2TA 10,866.96 - 9;375.)0 167.38 - 1 - 5 - 3 - 50 49.12 Pass - Major Risk G -30 - G -30 - G -30 Out of range _G-30 - G- 30A -G-30A ___ 8,80Q 00 -. _- 8,895_00- 242 77 291 37 988 49 Pass - Majnr Risk_ -_ -_ -- G-30 - G -30B - G -30B 8,714.84 11,400.00 810.24 313.02 552.45 Pass - Major Risk G -30 - Plan 6 G -30C - Plan #6 8,800.00 8,895.00 1,242.77 291.25 986.57 Pass - Major Risk G -31 -Get = G 3t 8,115M 8,620.00 166.38 106.80 1,091.93 Pass - M 0-31 - G -31A - G -31A 8,115.00 8,620.00 1,166.38 106.80 1,091.93 Pass - Major Risk G -31 - G- 31APB1 - G- 31APB1 -_- 8_115.00 8.620.00 1,166.38 106.80 1,091.93 Pass - Major Risk G -31 - G -31 B - G -31 B 11,452.27 10,315.00 750.94 172.56 582.78 Pass - Major Risk G -31 - G -31 BPB1 - G -31 BPB1 11,191.82 9,955.00 972.04 165.94 811.76 Pass - Major Risk 11/101(709 3:17 :34PM Page 3 of 4 - - COMPASS 2003.16 Build 71 - -- • Proj ite PR Prudhoe f� Pad Bay • Well: G -23 Welibore: Plan G -23B Design: - Plart #3 -23B -- From KOP 8115'md to TD Scan interval 100 ft Scale 1:100 G -10B Risk Pass 1:10 0 i G- 1016 -10A � I ' 4,1 330 / ; 30 300 1r. / 250 4 114 i G- 031G03 ilits'b 300 1079 60 / / 1 Ai ii , / / 10819 it's �� '9147 NI% 7 9175 I '9102 9189 41, 270 10844 ; 21 G- 231G -23/ ■ \ 7. ----- � , . 8915 i Vi e .. 10875 . \ - 240 r 120 4 10908 r' "iiiiikata...._ Ik i:',,. c ! ,4,„ ' � 9415 lel! G- 231G -23 210 / 150 G 27/Cr27A 180 , Travelling Cylinder Azimuth (TFO +AZI) [ vs Centre to Centre Separation [100 ft/in] I 01 CT I 00 — u 0 CD GB O1 MB 0 0 el ■. US i l O O SI In n D O O :: OD lin SO aozi- 1 _. , 1 11111 A kit-- - ,,,„,,, ,„,..,, ...- 00b lo ll \ di -ftl o - - --- ----- - - 11........_ ■ m inirri rolu, i 1 009 - 00E- • 119 5 9 29 tl _ M999'5 21.11 1 N 61 1.61.01. . V .151 +Meg 1161 . - 6 97 efti M 9 V ♦1•'�7 g.. 691 a599V91 ■ r 1 eP+ 9 A .. 9ft-Of IJ• Pull %: • Maya Alaska Department of Natural.ources Land Administration System Page 1 0/ 1 Alaska Mapper Land Records /Status Plats Recorder's Search State Cabins Natural Resources Alaska DNR Case Summary File Type: ADL File Number: 28280 Printable Case File Summary See Township, Range, Section and Acreage? New Search l Yes 0 No LAS Menu I Case Abstract I Case Detail I Land Abstract File: ADL 28280 ' °E' Search for Status Plat Updates As of 11/16/2009 Customer: 000107377 BP EXPLORATION (ALASKA) INC PO BOX 196612/900 E. BENSON BL ATTN: LAND MANAGER - ALASKA ANCHORAGE AK 995196612 Case Type: 784 OIL & GAS LEASE COMP DNR Unit: 780 OIL AND GAS File Location: DOG DIV OIL AND GAS Case Status: 35 ISSUED Status Date: 08/19/1965 Total Acres: 2560.000 Date Initiated: 05/28/1965 Office of Primary Responsibility: DOG DIV OIL AND GAS Last Transaction Date: 12/04/2006 Case Subtype: NS SLOPE Last Transaction: AA -NRB ASSIGNMENT APPROVED Meridian: U Township: O11N Range: 013E Section: 01 Section Acres: 640 Search Plats Meridian: U Township: O11N Range: 013E Section: 02 Section Acres: 640 Meridian: U Township: 011N Range: 013E Section: 11 Section Acres: 640 Meridian: U Township: O11N Range: 013E Section: 12 Section Acres: 640 Legal Description 05 -28 -1965 * * * SALE NOTICE LEGAL DESCRIPTION * * * C14- 91 T11N, R13E, UM 1, 2, 11, 12 2,560.00 07 -07 -1987 * * * LISBURNE PARTICIPATING AREA DESCRIPTION * T. 11 N., R.13 E., U.M. SECTION 1: ALL 640 ACRES SECTION 12: ALL 640 ACRES http://dnr.alaska.gov/projects/las/Case Summary.cfm?F ileType=ADL&FileNumber=2 82... 11 /16/2009 1 TRANSMITTAL LETTER CHECKLIST WELL NAME /We/ PTD# a:z.P09 /' V Development Service Exploratory Stratigraphic Test Non - Conventional Well FIELD: / Z,4/ POOL: / O - XAIy O/4 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(0, all records, data and logs acquired for the pilot hole must be clearly differentiated in both well name ( PH) and API number (50- - - ) from records, data and logs acquired for well 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 zr " ' i u Field & Pool PRUDHOE BAY, PRUDHOE OIL - 640150 Well Name: PRUDHOE BAY UNIT G -23B Program DEV —__ Well bore seg ❑ PTD #: 2091440 Company BP EXPLORATION (ALASKA) INC Initial Class/Type DEV / PEND GeoArea 890 Unit 11650 On /Off Shore On Annular Disposal ❑ Administration I1 Permit fee attached NA 2 Lease number appropriate Yes 3 Unique well name and number Yes 4 Well located in a defined pool Yes 5 Well located proper distance from drilling unit boundary Yes 6 Well located proper distance from other wells Yes 7 Sufficient acreage available in drilling unit Yes 25.60 acres. 8 If deviated, is wellbore plat included Yes 9 Operator only affected party Yes 10 Operator has appropriate bond in force Yes Blanket Bond # 6194193. 11 Permit can be issued without conservation order Yes Appr Date 12 Permit can be issued without administrative approval Yes 13 Can permit be approved before 15 -day wait Yes ACS 11/16/2009 14 Well located within area and strata authorized by Injection Order # (put IO# in comments) (For NA 15 All wells within 1/4 mile area of review identified (For service well only) NA III 116 Pre- produced injector: duration of pre - production Less than 3 months (For service well only) NA 17 Nonconven. gas conforms to AS31.05.030(j.1.A),(j.2.A -D) NA 18 Conductor string provided NA Conductor set in G -23A Engineering 1 19 Surface casing protects all known USDWs NA Surface Casing set in G -23A 20 CMT vol adequate to circulate on conductor & surf csg NA Surface casing cemented to GL 21 CMT vol adequate to tie -in long string to surf csg NA Production Casing set 22 CMT will cover all known productive horizons Yes Cemented liners to beperfed, 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. 125 If a re -drill, has a 10 -403 for abandonment been approved Yes 309 -382 26 Adequate wellbore separation proposed Yes Proximity analysis performed. No issues . 1 27 If diverter required, does it meet regulations NA Well head in place. BOP installed. Appr Date 28 Drilling fluid program schematic & equip list adequate Yes Max formation pressure= 3003 psi (6.9 ppg EMW) Will drill with 10.7 ppg mud GLS 11/17/2009 1,29 BOPEs, do they meet regulation Yes 30 BOPE press rating appropriate; test to (put prig in comments) Yes MASP= 2165 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 33 Is presence of H2S gas probable Yes H2S on G pad . Rig has sensors and alarms. 34 Mechanical condition of wells within AOR verified (For service well only) NA '35 Permit can be issued w/o hydrogen sulfide measures No Max level H2S was40ppm for well G -10C. Geology 36 Data presented on potential overpressure zones NA Appr Date 37 Seismic analysis of shallow gas zones NA ACS 11/16/2009 38 Seabed condition survey (if off-shore) NA 39 Contact name /phone for weekly progress reports [exploratory only) NA Geologic Engineering P. it. Commissioner: Date: Com fission : Date C, Dt Dt er Date