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Home My WebLink About212-063Digitally signed by Sean McLaughlin (4311) DN: cn=Sean McLaughlin (4311) Date: 2025.12.02 17:09:09 - 09'00' Sean McLaughlin (4311) 325-736 By Grace Christianson at 9:22 am, Dec 03, 2025 A.Dewhurst 05DEC25 10-407 J.Lau 12/8/25 DSR-12/3/25 *Variance as per 20 AAC 25.112(i): Approved for alternate abandonment plug placement on parent well contingent upon fully cemented liner on upcoming sidetrack. *Window milling on service coil not approved on 10-403, refer to sidetrack PTD for approval. Open hole window milling not to exceed 15'. 12/08/25 To: Alaska Oil & Gas Conservation Commission From: William Long Drilling Engineer Date: December 2, 2025 Re:C-24B Sundry Request Sundry approval is requested to set a whipstock in the C-24B wellbore as part of the drilling and completion of the proposed C-24C CTD lateral. Proposed plan: Prior to drilling activities, screening will be conducted to drift for whipstock and MIT. E-line will set a 4-1/2" whipstock. Coil will mill window pre-rig. If unable to set the whipstock or mill the window pre-rig, the rig will perform that work. See C-24C PTD request for complete drilling details - A coil tubing drilling sidetrack will be drilled with the Nabors CDR2 or CDR3 rig. The rig will move in and test BOPE. If unable to pre-rig, the rig will set the 4-1/2" whipstock and mill a single string 3.80" window + 10' of formation. The well will kick off in the Ivishak Zone 4 and land in Zone 2. The proposed sidetrack will be completed with a 3-1/2"x3-1/4"x2-7/8 13Cr solid liner, cemented in place and selectively perforated post rig (will be perforated with rig if unable to post rig). This completion will completely isolate and abandon the parent Prudhoe Pool perfs. 20 AAC 25.112(i) Variance Request: Hilcorp requests to plug the existing perforations via the liner cement job, packer whipstock and/or liner top packer, if the liner lap pressure test fails as an alternate plug placement. The following describes work planned and is submitted as an attachment to Form 10-403. A schematic diagram of the current wellbore and proposed sidetrack is attached for reference. Pre-Rig Work: (Estimated to start in December 17, 2025) 1. Slickline : Dummy WS drift(Done), Dummy GLVs, Caliper(Done) 2. Fullbore : MIT-IA and/or MIT-T to 2,500 psi (min)(Done) 3. E-Line : Set 4-1/2" Packer Whipstock at 9982' MD at 0 degrees ROHS 4. Coil : Mill 3.80" Window in 4-1/2" Liner plus 10 rat hole. 5. Valve Shop : Pre-CTD Tree Work 6. Operations : Remove wellhouse and level pad. Rig Work: (Estimated to start in February 2026) Reference C-24C Permit submitted in concert with this request for full details. 1. MIRU and test BOPE 250 psi low and 3,500 psi high (MASP 2,420 psi). Give AOGCC 24hr notice prior to BOPE test. 2. Mill 3.80 Single String 4-1/2" Window plus 10 rat hole (if not already done pre-rig). 3. Drill build section: 4.25" OH, ~320' (18 deg DLS planned). 4. Drill production lateral: 4.25" OH, ~3313' (12 deg DLS planned). Swap to KWF for liner. 5. Run 3-1/2 x 3-1/4 x 2-7/8 13Cr solid liner 6. Pump primary cement job*: ~46 bbls, 15.3 ppg Class G, 1.24 (ft3/sk), TOC at TOL. Set LTP*. If high losses are encountered during cement job and it is deemed necessary, a cement down squeeze from TOL to loss zone will be performed with the rig or service coil (if performed by service coil see future sundry). 7. Only if not able to do with service coil extended perf post rig Perforate Liner with 1-1/4" CS Hydril. 8. Freeze protect well to a min 2,200' TVD. 9. Close in tree, RDMO. * Alternate plug placement variance request per 20 AAC 25.112(i) Post Rig Work: 1. Valve Shop : Valve & tree work 2. Slickline : Set LTP* (if necessary). Set live GLVs. 3. Service Coil : Post rig CBL and perforate (~250) - see extended perf procedure attached. 4. Testing : Portable test separator flowback. William Long CC: Well File Drilling Engineer Joe Lastufka 907-263-4372 Well Date Quick Test Sub to Otis - Top of 7" Otis 0.0 ft Distances from top of riser Excluding quick-test sub Top of Annular CL Annular Bottom Annular CL Blind/Shears CL Coiled Tubing Pipe / Slips Kill Line Choke Line CL BHA Pipe / Slip CL Coiled Tubing Pipe / Slips TV1 TV2 T1 T2 Flow Tee Master Master LDS IA OA LDS Ground Level CDR#-AC BOP Schematic CDR Rig's Drip Pan Fill Line Normally Disconnected HP hose to Micromotion LP hose open ended to Flowline (optional) Hydril 7 1/16" Annular Blind/Shear CT Pipe/Slips 2 3/8" Pipe/Slips 2 3/8" Pipe/Slips 7-1/16" 5k Mud Cross CT Pipe/Slips BHA Pipe / Slips nneeeeeceeeeeeeeeeeeeeeeeeeeeeeeeeeeeee 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 C-24B Pull Plug Hilcorp North Slope, LLC 3800 Centerpoint Dr, Suite 1400, Anchorage, AK 99503 212-063 50-029-20816-02-00 12468 Conductor Surface Intermediate Liner Liner 9020 2671 9283 9731 590 2506 10985 13-3/8" 9-5/8" 7" 4-1/2" 3-1/2" x 3-1/4" x 2-7/8" 9021 70 - 2741 27 - 9310 25 - 9756 9584 - 10174 9961 - 12467 70 - 2691 27 - 8025 25 - 8443 8274 - 8846 8646 - 9020 12433 2670 4760 7020 7500 10530 10985, 12284 5380 6870 8160 8430 10160 9769- 12280 4-1/2" 12.6# L-80 24 - 9592 8456 - 9016 Structural 80 20" x 30" 29 - 109 29 - 109 4-1/2" Baker S-3 Packer 9535 8228 Torin Roschinger Operations Manager Leif Knatterud leif.knatterud@hilcorp.com 9075644667 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 0028285, 0028305 24 - 8282 N/A N/A 89 209 12076 29701 8 146 200 175 700 860 N/A 13b. Pools active after work:Prudhoe Oil No SSSV Installed 9535, 8228 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 12:35 pm, Jul 09, 2025 Digitally signed by Torin Roschinger (4662) DN: cn=Torin Roschinger (4662) Date: 2025.07.09 09:49:53 - 08'00' Torin Roschinger (4662) JJL 7/21/25 DSR-7/21/25 RBDMS JSB 071025 ACTIVITY DATE SUMMARY 6/23/2025 ***WELL S/I ON ARRIVAL*** RIH W/, KJ, 2' STEM, 3.79" GAUGE RING ***CONTINUE 6/24/25*** 6/24/2025 ***CONTINUE FROM 6/23/25*** RAN KJ, 2' STEM, 3.79" GAUGE RING TAG @ 9,914' SLM PULL 4-1/2" JUNK BASKET @ 9,914' SLM (EMPTY) **WELL CONTROL DRILL NIGHTS W/ RAGSDALE, STUFFING BOX, PACKING BLOWOUT** PULLED 2.31" PX PLUG FROM PTSA @ 9,944' SLM RAN 20' x 3.70" DUMMY WHIPSTOCK TO LTP @ 9,924' SLM RAN HES 40 ARM CALIPER FROM 9,922' SLM TO SURFACE (good data) SET 4-1/2" WHIDDON @ 9,924' MD PULL ST# 3 BK-LGLV @ 5,921' MD PULL ST# 4 BK-LGLV @ 3,286' MD SET BK-DGLV IN ST# 4 @ 3,286' MD RIG UP LRS TO IA ***CONTINUE 6/25/25*** 6/24/2025 ( PROFILE MODIFICATON ) Assist Slickline. *** Job Continued 6-25-25 *** 6/25/2025 ***CONTINUE FROM 6/24/25*** LRS LOAD IA W/ 140 BBLS CRUDE 3 FAILED ATTEMPTS @ SETTING BK-DGLV IN ST#3 SET BK-DGLV IN ST#3 @ 5,921' MD PULLED EMPTY WHIDDON CATCHER FROM 9,759' SLM RAN 4-1/2" BRUSH & 3.79" GAUGE RING WHILE LRS LOADED TUBING W/ 180 BBLS OF CRUDE SET 4-1/2" PX PLUG BODY & PRONG @ 9,559' MD LRS PERFORMED PASSING MIT-T TO 2750 PSI LRS PERFORMED PASSING COMBO CMIT T X IA TO 2750 PSI PULL PRONG @ 9559' MD ***CONTINUE 6/26/25*** 6/25/2025 *** Job Continued from 6-24-25 ***T/I/O=2416/2424/0 ( PROFILE MODIFICATION ) Assist Slickline.Load IA with 123 bbls Crude. Loaded TBG with 180 bbls of Crude. MIT-T ( PASSED ) Pumped 1.13 bbls to reach max applied pressure 3000 psi. 15 min loss- 138 Psi. 30 min Loss- 67 Psi. Combo MIT- TxIA ( FAILED ) Pumped 3.12 bbls to reach max applied presure 3000 psi. 15 min loss - T- 38 Psi IA- 39 Psi. 30 min Loss - T- 22 Psi IA- 21 Psi. Combo MIT- TxIA ( PASSED ) Pumped 0.12 bbls to reach max applied pressure 3000 psi. 15 min loss - T - 17 Psi IA - 20 Psi. 30 min loss- T- 17 Psi. IA- 9 Psi. 45 min loss - T - 8 Psi IA- 10 Psi Secure RU FWHP=522/536/0 6/26/2025 ***WSR CONTINUED FROM 25-JUN-2025*** PULL PLUG BODY @ 9,559' MD ***JOB COMPLETE ON 26-JUN-2025*** Daily Report of Well Operations PBU C-24B 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 C-24B Extended Perf w CTU Hilcorp North Slope, LLC 3800 Centerpoint Dr, Suite 1400, Anchorage, AK 99503 212-063 50-029-20816-02-00 12468 Conductor Surface Intermediate Production Liner 9020 2671 9283 9731 590 2506 10985 13-3/8" 9-5/8" 7" 4-1/2" 3-1/2" x 3-1/4" x 2-7/8" 9021 70 - 2741 27 - 9310 25 - 9756 9584 - 10174 9961 - 12467 70 - 2691 27 - 8025 25 - 8443 8274 - 8846 8646 - 9020 12433 2670 4760 7020 7500 10530 10985, 12284 5380 6870 8160 8430 10160 10610 - 12280 4-1/2" 12.6# L-80 24 - 9592 9020 - 9016 Structural 80 20" x 30" 29 - 109 29 - 109 4-1/2" Baker S-3 Packer 9535, 8228 9535 8228 Torin Roschinger Operations Manager Michael Hibbert michael.hibbert@hilcorp.com 9079035990 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 0028285, 0028305 24 - 8282 N/A N/A 94 298 7813 8929 0 384 1900 450 299 362 323-593 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 1:24 pm, Jan 04, 2024 Digitally signed by Torin Roschinger (4662) DN: cn=Torin Roschinger (4662), ou=Users Date: 2024.01.04 05:56:24 -09'00' Torin Roschinger (4662) WCB 2024-06-24 RBDMS JSB 011124 DSR-1/26/24 ACTIVITY DATE SUMMARY 12/12/2023 SLB CTU #9 - 1.75" CT - 0.156WT Job Scope: Adperf Initial T/I/O = 2300/950/0 psi MIRU. Make up HES 2.2" GR/CCL w/ 2.25" BDN. Open well RIH and attempt to bullhead kill while bleeding IA pressure down. @40bbls away well is pressuring up and not taking fluids. Come back to surface. FP surface lines shut in IA bleed. Pump neat to BOPs and bleed back water to OT tanks. Flowed back ~35bbls of fluid, FP'd all surface lines and 5bbls meth down the well. Shut in well and swap coil over to meth. Open well down the FL, WHP drops to 200psi in ~20minutes. Shut-in well and unstab to swap out logging tools due to extended time cold soaking at surface. Stab back on and RIH w/ logging tools wing open. ***JOB IN PROGRESS*** 12/13/2023 SLB CTU #9 - 1.75" CT - 0.156WT. Job Scope: Perforate Tag @ 10,858.7' E / 10,858.76 HES / 10,970' Mech. Log up 50 fpm to 10,561.1' E / 10.561.1 HES / 10,608' Mech Paint White Flag. Log up 50 fpm to 9400.1' E / 9400.15 HES / 9444' Mech. Open wing valve to prod. RIH and start pumping slick 1% kcl down CT. Circ Out Gas 1.75 times btms up get fluid returns. pump another btms up. NO flow good. POOH keep hole full. MIRU Crane and HES TCP. At Surf Depth off - 84' E / -64' M. Pop off WH. BD HES Mem Tools. +119' Corr. EM to OE & GEO & Approved. FP Flow line for pad op - 70 bbls diesel. PT MHA. Pump across top from 40 bbl TT to TT. Good NO FLOW. Deploy 5 perf guns & MU Firing Head (90'). RIH. Corr Depth at Flag. Pump 1/2" ball. Perf 10,610' - 10,700'. POOH keep hole full. NO FLOW good. Undelpoy 5 guns - recovered ball and confirmed shots fired. Freeze protect tbg. RDMO. ***Job Complete*** Daily Report of Well Operations PBU C-24B Adperfs are correctly shown on the new WBS, below. -WCB eploy 5 perf guns & MU Firing Head (90'). RIH. yg g Corr Depth at Flag. Pump 1/2" ball. Perf 10,610' - 10,700'. POOH 7. If perforating: 1. Type of Request: 2. Operator Name: 3. Address: 4. Current Well Class:5. Permit to Drill Number: 6. API Number: 8. Well Name and Number: 9. Property Designation (Lease Number):10. Field: Abandon Suspend Plug for Redrill Perforate New Pool Perforate Plug Perforations Re-enter Susp Well Other Stimulate Fracture Stimulate Alter Casing Pull Tubing Repair Well Other: Change Approved Program Operations shutdown What Regulation or Conservation Order governs well spacing in thes pool? Will perfs require a spacing exception due to property boundaries?Yes No 11. Total Depth MD (ft): Total Depth TVD (ft): Effective Depth MD: Effective Depth TVD: MPSP (psi): Plugs (MD): Junk (MD): PRESENT WELL CONDITION SUMMARY Perforation Depth MD (ft): Perforation Depth TVD (ft):Tubing Size: Tubing Grade: Tubing MD (ft): Packers and SSSV Type:Packers and SSSV MD (ft) and TVD (ft): Casing Length Size MD TVD Burst Collapse Exploratory Stratigraphic Development Service 12. Attachments: 14. Estimated Date for Commencing Operations: 13. Well Class after proposed work: 15. Well Status after proposed work: 16. Verbal Approval: 17. I hereby certify that the foregoing is true and the procedure approved herein will not be deviated from without prior written approcal. Proposal Summary Wellbore schematic BOP SketchDetailed Operations Program OIL GAS WINJ WAG GINJ WDSPL GSTOR Op Shutdown Suspended SPLUG Abandoned ServiceDevelopmentStratigraphicExploratory Authorized Name and Digital Signature with Date: Authorized Title: Contact Name: Contact Email: Contact Phone: AOGCC USE ONLY Commission Representative: Conditions of approval: Notify AOGCC so that a representative may witness Sundry Number: Location ClearanceMechanical Integrity TestBOP TestPlug Integrity Other Conditions of Approval: Post Initial Injection MIT Req'd?Yes No Subsequent Form Required: Approved By:Date: APPROVED BY THE AOGCCCOMMISSIONER PBU C-24B Extended Perf w CTU Hilcorp North Slope, LLC 3800 Centerpoint Dr, Suite 1400, Anchorage, AK 99503 212-063 50-029-20816-02-00 341J ADL 0028285, 0028305 12468 Conductor Surface Intermediate Production Liner 9020 2671 9283 9731 590 2506 10985 13-3/8" 9-5/8" 7" 4-1/2" 3-1/2" x 3-1/4" x 2-7/8" 9021 70 - 2741 27 - 9310 25 - 9756 9584 - 10174 9961 - 12467 2450 70 - 2691 27 - 8025 25 - 8443 8274 - 8846 8646 - 9020 12433 2670 4760 7020 7500 10530 10985, 12284 5380 6870 8160 8430 10160 10800 - 12280 4-1/2" 12.6# L-80 24 - 95929021 - 9016 Structural 80 20" x 30" 29 - 109 29 - 109 4-1/2" Baker S-3 Packer No SSSV Installed 9535, 8228 Date: Torin Roschigner Operations Manager Michael Hibbert michael.hibbert@hilcorp.com (907) 903-5990 PRUDHOE BAY 11/20/2023 Current Pools: Prudhoe Oil Proposed Pools: Prudhoe Oil Suspension Expiration Date: STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION APPLICATION FOR SUNDRY APPROVALS 20 AAC 25.280 Comm. Comm.Sr Pet Eng Sr Pet Geo Sr Res Eng Form 10-403 Revised 06/2023 Approved application is valid for 12 months from the date of approval.Submit PDF to aogcc.permitting@alaska.gov Digitally signed by Aras Worthington (4643) DN: cn=Aras Worthington (4643) Date: 2023.10.31 12:45:43 - 08'00' Aras Worthington (4643) By Grace Christianson at 3:03 pm, Nov 01, 2023 323-593 MGR01NOV23 DSR-11/2/23 10-404 SFD 11/2/2023 Perforate *&: Brett W. Huber, Sr. Digitally signed by Brett W. Huber, Sr. Date: 2023.11.03 10:41:38 -08'00'11/03/23 RBDMS JSB 110723 ExtPerforating C-24B Well Name:C-24B API Number:50-029-20816-02 Current Status:Producer Rig:CTU Estimated Start Date:11/20/23 Estimated Duration:2day Reg.Approval Req’std?10-403 Date Reg. Approval Rec’vd: Regulatory Contact:Abbie Barker Permit to Drill Number:212-063 First Call Engineer:Michael Hibbert (907) 903-5990 (C) Second Call Engineer:Kirsty Schultz (907) 350-4310 (C) Current Bottom Hole Pressure:3250 psi @ 8,800’ TVD (Based on Average Ivishak BHP) Maximum Expected BHP:3250 psi @ 8,800’ TVD (Based on Average Ivishak BHP) Max. Anticipated Surface Pressure:2450psi (Last SI WHP > calc’d gradient) Last SI WHP:1200 psi (Taken on 7/7/2018) Min ID:2.31” 45KB LTP PTSA at 9925’ Max Angle:94 Deg @ 10,558 MD Reference Log:SLB Memory Compensated Neutron Log dated 21-09-2012 Brief Well Summary: Completed in 2012 as a Zone 2 well. Well came on strong but with high gas rates from the start of production. Gas rates were 26 mmscf on the first test in HP. Initial perfs were 200' in Zone 2A at the toe of the well. Drilling had a poor cement job due to lost circulation and had one plug back during drilling. In Q1 2023, a liner cement squeeze was executed to shutoff holes in the liner that were producing gas. Cement came back into the liner below the CIBP which led to extensive milling. After getting back to target zone, perforations were added which quickly went high GOR. On October 20, 2023, CT set a CIBP at 10,985’ and perforated 10,800’-10,900’ with 2” MaxForce charges. Well would not maintain production and was shut-in within 2-3 days. Objective:This program will perforate 90’ of better rock quality. No plug set is required. Procedure: 1. MU GR/CCL with ~2.25” JSN drift. RIH to ~10,900’ (CIBP @ 10,985’). Flag pipe and pull tie-in log. a. Flag pipe as appropriate per WSS for adperf b. POOH and freeze protect tubing as needed. c. Confirm good log data. d. Correlate with SLB Memory CNL 9/21/12(see attached log – Jewelry Log Pass). e. Correct flag and send to Jeff Nelson or OE. 2. POOH. Coil – Extended Perforating – If liner integrity test passed then proceed with extended perforating Notes: x Remote gas monitoring for H2S and LELs are required for Open Hole Deployment Operations x Due to the necessary open hole deployment of Extended Perforating jobs, 24-hour crew and WSS coverage is required. The well will be killed and monitored before making up the initial perf guns. This is generally done during the drift/logging run. This will provide guidance as to whether the well will be killed by bullheading or circulating bottoms up throughout the job. If pressure is seen immediately after perforating, it will either be killed by bullheading while POOH or circulating bottoms up through the same port that opened to shear the firing head. 3. After MU MHA and pull testing the CTC, tag-up on the CT stripper to ensure BHA cannot pull through the brass upon POOH with guns. ExtPerforating C-24B 4. Bullhead ~250 bbls 1% KCL/SW down tubing. Max tubing pressure 2500 psi. (This step can be performed any time prior to open-hole deployment of the perf guns. Timing of the well kill is at the discretion of the WSS.) a. Wellbore volume to top perf = 166 bbls b. 4-1/2” Tubing/Liner – 9,925’ X .0152 bpf = 151 bbls c. 3-1/4” Liner – 1008’ X 0.0079 bpf = 8 bbl d. 2-7/8” Liner – 1147’ X .0058 bpf = 7 bbls 5. At surface, prepare for deployment of TCP guns. 6. Confirm well is dead. Bleed any pressure off to return tank. Kill well w/KWF, 8.4 ppg 1% KCl or 8.5 ppg as needed. Maintain hole fill taking returns to tank until lubricator connection is re-established. Fluids man-watch must be performed while deploying perf guns to ensure the well remains killed and there is no excess flow. 7.*Perform drill by picking up safety joint with TIW valve and space out before MU guns. Review well control steps with crew prior to breaking lubricator connection and commencing makeup of TCP gun string. Once the safety joint and TIW valve have been spaced out, keep the safety joint/TIW valve readily accessible near the working platform for quick deployment if necessary. e.At the beginning of each job, the crossover/safety joint must be physically MU to the perf guns one time to confirm the threads are compatible. 8.Break lubricator connection at QTS and begin makeup of TCP guns per schedule below. Constantly monitor fluid rates pumped in and fluid returns out of the well. Fluids man-watch must be performed while deploying perf guns to ensure the well remains killed and there is no excess flow. Perf Schedule Use 2” Maxforce guns or similar Perf Interval Perf Length Gun Length Weight of Gun (lbs) Run #1 10,610’-10,700’90’90’504 lbs (5.6 ppf) 9. RIH with perf gun and tie-in to coil flag correlation. Pickup and perforate interval per Perf Schedule above. f. Note any tubing pressure change in WSR. 10. After perforating, PUH to top of liner or into tubing tail to ensure debris doesn’t fall in on the guns and stick the BHA. Confirm well is dead and re-kill, if necessary, before pulling to surface. 11. Pump pipe displacement while POOH. Stop at surface to reconfirm well is dead. Kill well if necessary. 12. Review well control steps and Standing Orders with crew prior to breaking lubricator connection and commencing breakdown of TCP gun string. 13. Ensure safety joint and TIW valve assembly are on-hand before breaking off lubricator to LD gun BHA. 14. RDMO CTU. 15. Turn well over to Operations POP. Attachments: x Wellbore Schematic x Proposed Schematic x Tie-In Log x BOPE Schematic x Standing Orders x Equipment Layout Diagram x Sundry Change Form MU PCE. - mgr ExtPerforating C-24B Wellbore Schematic ExtPerforating C-24B Proposed Schematic Add perforations from 10,610’-10,700’ ExtPerforating C-24B Tie-In Log ExtPerforating C-24B Perforate from 10,610’-10,700’ ExtPerforating C-24B BOP Schematic ExtPerforating C-24B ExtPerforating C-24B ExtPerforating C-24B Changes to Approved Sundry Procedure Date: Subject: Sundry #: Any modifications to an approved sundry will be documented and approved below. Changes to an approved sundry will be communicated to the AOGCC by the “first call” engineer. AOGCC written approval of the change is required before implementing the change. Step Page Date Procedure Change HAK Prepared By (Initials) HAK Approved By (Initials) AOGCC Written Approval Received (Person and Date) Approval: Operations Manager Date Prepared: Operations Engineer Date 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 C-24B Extended Perf w CTU Hilcorp North Slope, LLC 3800 Centerpoint Dr, Suite 1400, Anchorage, AK 99503 212-063 50-029-20816-02-00 12468 Conductor Surface Intermediate Production Liner 9020 2671 9283 9731 590 2506 10985 13-3/8" 9-5/8" 7" 4-1/2" 3-1/2" x 3-1/4" x 2-7/8" 9021 70 - 2741 27 - 9310 25 - 9756 9584 - 10174 9961 - 12467 70 - 2691 27 - 8025 25 - 8443 8274 - 8846 8646 - 9020 12433 2670 4760 7020 7500 10530 10985, 12284 5380 6870 8160 8430 10160 10800 - 12280 4-1/2" 12.6# L-80 24 - 9592 9021 - 9016 Structural 80 20" x 30" 29 - 109 29 - 109 4-1/2" Baker S-3 Packer 9535, 8228 9535 8228 Torin Roschinger Operations Manager Michael Hibbert michael.hibbert@hilcorp.com 907.903.5990 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 0028285, 0028305 N/A N/A 220 94 24457 7813 282 0 1100 1900 1100 220 323-510 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 24 - 8282 By Grace Christianson at 10:32 am, Oct 26, 2023 Digitally signed by Torin Roschinger (4662) DN: cn=Torin Roschinger (4662), ou=Users Date: 2023.10.26 10:06:15 -08'00' Torin Roschinger (4662) ACTIVITY DATE SUMMARY 10/17/2023 LRS CTU #1, 1.50" Blue Coil. Job Objective: Set CIBP, Extended Perforate MIRU CTU. ...Continued on WSR 10-18-23... 10/18/2023 LRS CTU #1 - 1.50' Blue Coil Job Objective: Set CIBP, Ext. AddPerf Make up drift/log BHA with 2.2" GR/CCL carrier and 2.25" JSN. Load well with Slick Seawater. RIH and tag at 11074' CTMD. Log from tag to 9900', painting tie-in flag at 10850'. POOH maintaining hole fill. Make up 2-7/8" NS CIBP and RIH. Tie-in to CIBP and set with ME at 10985'. Plug PT to 2000 psi, PASS. POOH maintaining hole fill with seawater. Open hole deploy 100' HES guns, RIH. Correct depth to CIBP pick up to shot depth and launch 1/2" alluminum ball ...Continue to WSR on 10/19/23... 10/19/2023 LRS CTU #1 - 1.50' Blue Coil Job Objective: Set CIBP, Ext. AddPerf Cont. pumping 1/2" alluminum ball. Perforate interval 10.800'-10,900' w/ 2" HES Maxforce guns. 6SPF 60 degree phase. POOH maintaining hole fill. Undeploy HES spent guns. recover 1/2" ball. M/U LRS JSN for freeze protecting. RIH, lay in 38bbls methanol freeze protect from 2,500'. RDMO ***Job Complete*** 10/21/2023 T/I/O = 300/1540/0 . Temp = 76*. IA FL (OP's request). DPBGL online from C-23 = 1560 psi. IA FL @ 5747' (174' above sta#3 Dome). SV - C. WV, SSV, MV = O. IA & OA = OTG. 15:30 Daily Report of Well Operations PBU C-24B 7. If perforating: 1. Type of Request: 2. Operator Name: 3. Address: 4. Current Well Class:5. Permit to Drill Number: 6. API Number: 8. Well Name and Number: 9. Property Designation (Lease Number):10. Field: Abandon Suspend Plug for Redrill Perforate New Pool Perforate Plug Perforations Re-enter Susp Well Other Stimulate Fracture Stimulate Alter Casing Pull Tubing Repair Well Other: Change Approved Program Operations shutdown What Regulation or Conservation Order governs well spacing in thes pool? Will perfs require a spacing exception due to property boundaries?Yes No 11. Total Depth MD (ft): Total Depth TVD (ft): Effective Depth MD: Effective Depth TVD: MPSP (psi): Plugs (MD): Junk (MD): PRESENT WELL CONDITION SUMMARY Perforation Depth MD (ft): Perforation Depth TVD (ft):Tubing Size: Tubing Grade: Tubing MD (ft): Packers and SSSV Type:Packers and SSSV MD (ft) and TVD (ft): Casing Length Size MD TVD Burst Collapse Exploratory Stratigraphic Development Service 12. Attachments: 14. Estimated Date for Commencing Operations: 13. Well Class after proposed work: 15. Well Status after proposed work: 16. Verbal Approval: 17. I hereby certify that the foregoing is true and the procedure approved herein will not be deviated from without prior written approcal. Proposal Summary Wellbore schematic BOP SketchDetailed Operations Program OIL GAS WINJ WAG GINJ WDSPL GSTOR Op Shutdown Suspended SPLUG Abandoned ServiceDevelopmentStratigraphicExploratory Authorized Name and Digital Signature with Date: Authorized Title: Contact Name: Contact Email: Contact Phone: AOGCC USE ONLY Commission Representative: Conditions of approval: Notify AOGCC so that a representative may witness Sundry Number: Location ClearanceMechanical Integrity TestBOP TestPlug Integrity Other Conditions of Approval: Post Initial Injection MIT Req'd?Yes No Subsequent Form Required: Approved By:Date: APPROVED BY THE AOGCCCOMMISSIONER PBU C-24B Extended Perf w CTU Hilcorp North Slope, LLC 3800 Centerpoint Dr, Suite 1400, Anchorage, AK 99503 212-063 50-029-20816-02-00 341J ADL 0028285, 0028305 12468 Conductor Surface Intermediate Production Liner 9020 2671 9283 9731 590 2506 12284 13-3/8" 9-5/8" 7" 4-1/2" 3-1/2" x 3-1/4" x 2-7/8" 9016 70 - 2741 27 - 9310 25 - 9756 9584 - 10174 9961 - 12467 2450 70 - 2691 27 - 8025 25 - 8443 8274 - 8846 8646 - 9020 12433 2670 4760 7020 7500 10530 12284 5380 6870 8160 8430 10160 12080 - 12280 4-1/2" 12.6# L-80 24 - 95929016 - 9016 Structural 80 20" x 30" 29 - 109 29 - 109 4-1/2" Baker S-3 Packer No SSSV Installed 9535, 8228 Date: Torin Roschinger Operations Manager Michael Hibbert michael.hibbert@hilcorp.com 907.903.5990 PRUDHOE BAY 10/15/2023 Current Pools: PRUDHOE OIL Proposed Pools: PRUDHOE OIL Suspension Expiration Date: STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION APPLICATION FOR SUNDRY APPROVALS 20 AAC 25.280 Comm. Comm.Sr Pet Eng Sr Pet Geo Sr Res Eng Form 10-403 Revised 06/2023 Approved application is valid for 12 months from the date of approval.Submit PDF to aogcc.permitting@alaska.gov By Grace Christianson at 11:26 am, Sep 08, 2023 Digitally signed by Torin Roschinger (4662) DN: cn=Torin Roschinger (4662), ou=Users Date: 2023.09.08 05:31:32 -08'00' Torin Roschinger (4662) 323-510 SFD 9/19/2023 DSR-9/12/23MGR22SEP23 10-404 *&:JLC 9/22/2023 09/22/23 Brett W. Huber, Sr. Digitally signed by Brett W. Huber, Sr. Date: 2023.09.22 12:58:40 -08'00' RBDMS JSB 092223 Plug & ExtPerf C-24B Well Name:C-24B API Number:50-029-20816-02 Current Status:Producer Rig:CTU Estimated Start Date:10/15/23 Estimated Duration:2days Reg.Approval Req’std?10-403 Date Reg. Approval Rec’vd: Regulatory Contact:Abbie Barker Permit to Drill Number:212-063 First Call Engineer:Michael Hibbert (907) 903-5990 (C) Second Call Engineer:Kirsty Schultz (907) 350-4310 (C) Current Bottom Hole Pressure:3250 psi @ 8,800’ TVD (Based on Average Ivishak BHP) Maximum Expected BHP:3250 psi @ 8,800’ TVD (Based on Average Ivishak BHP) Max. Anticipated Surface Pressure:2450psi (Last SI WHP > calc’d gradient) Last SI WHP:1200 psi (Taken on 7/7/2018) Min ID:2.31” 45KB LTP PTSA at 9925’ Max Angle:94 Deg @ 10,558 MD Reference Log:SLB Memory Compensated Neutron Log dated 21-09-2012 Brief Well Summary: Completed in 2012 as a zone 2 well. Well came on strong but with high gas rates from the start of production. Gas rates were 26 mmscf on the first test in HP. Initial perfs were 200' in zone 2A at the toe of the well. Drilling had a poor cement job due to lost circulation and had one plug back during drilling. In Q1 2023, a liner cement squeeze was executed to shutoff holes in the liner that were producing gas. Cement came back into the liner below the CIBP which led to extensive milling. After getting back to target zone perforations were added which quickly went high GOR. Objective:This program will isolate the lower liner with a CIBP, test for liner integrity and then perforate up- hole. Procedure: 1. MU GR/CCL with ~2.25” JSN drift (NS Bridge plug 278-210 is 2.1” OD). RIH to ~11,100’. Flag pipe and pull tie-in log. a. Flag pipe for plug set (11,000’) and perforating depth (10,800’-10,900’). 2. POOH. Correlate with SLB Memory CNL 9/21/12(see attached log – Jewelry Log Pass). Correct flag and send to Jeff Nelson or OE. 3. MU NS 278-210 Bridge Plug or similar. RIH. 4. Prior to entering liner fluid pack well down CTBS. See bullhead volumes below in step 10. 5. Set CIBP at 10,985’. 6. Perform liner integrity test to 2000 psi. 7. If liner integrity test does not pass solid call to discuss path forward with OE. 8. POOH. Coil – Extended Perforating – If liner integrity test passed then proceed with extended perforating Notes: x Remote gas monitoring for H2S and LELs are required for Open Hole Deployment Operations x Due to the necessary open hole deployment of Extended Perforating jobs, 24-hour crew and WSS coverage is required. The well will be killed and monitored before making up the initial perf guns. This is generally done during the drift/logging run. This will provide guidance as to whether the well will be killed by bullheading or circulating bottoms up throughout the job. If pressure is seen immediately after perforating, it will either be killed by bullheading while POOH or circulating bottoms up through the same port that opened to shear the firing head. Plug & ExtPerf C-24B 9. After MU MHA and pull testing the CTC, tag-up on the CT stripper to ensure BHA cannot pull through the brass upon POOH with guns. 10. Bullhead ~166 bbls 1% KCL/SW down tubing. Max tubing pressure 2500 psi. (This step can be performed any time prior to open-hole deployment of the perf guns. Timing of the well kill is at the discretion of the WSS.) a. Wellbore volume to top perf = 166 bbls b. 4-1/2” Tubing/Liner – 9,925’ X .0152 bpf = 151 bbls c. 3-1/4” Liner – 1008’ X 0.0079 bpf = 8 bbl d. 2-7/8” Liner – 1147’ X .0058 bpf = 7 bbls 11. Use flag from CIBP drift if possible. If needed MU and RIH with GR/CCL in carrier with 2.25” JSN. e. Flag pipe as appropriate per WSS for adperf f. POOH and freeze protect tubing as needed. g. Confirm good log data. 12. At surface, prepare for deployment of TCP guns. 13. Confirm well is dead. Bleed any pressure off to return tank. Kill well w/KWF, 8.4 ppg 1% KCl or 8.5 ppg as needed. Maintain hole fill taking returns to tank until lubricator connection is re-established. Fluids man-watch must be performed while deploying perf guns to ensure the well remains killed and there is no excess flow. 14.*Perform drill by picking up safety joint with TIW valve and space out before MU guns. Review well control steps with crew prior to breaking lubricator connection and commencing makeup of TCP gun string. Once the safety joint and TIW valve have been spaced out, keep the safety joint/TIW valve readily accessible near the working platform for quick deployment if necessary. h.At the beginning of each job, the crossover/safety joint must be physically MU to the perf guns one time to confirm the threads are compatible. 15.Break lubricator connection at QTS and begin makeup of TCP guns per schedule below. Constantly monitor fluid rates pumped in and fluid returns out of the well. Fluids man-watch must be performed while deploying perf guns to ensure the well remains killed and there is no excess flow. Perf Interval Perf Length Gun Length Weight of Gun (lbs) Run #1 10,800’-10,900’100’100’’560 lbs (5.6 ppf) Perf Schedule Use 2” Maxforce guns or similar 16. RIH with perf gun and tie-in to coil flag correlation. Pickup and perforate interval per Perf Schedule above. i. Note any tubing pressure change in WSR. 17. After perforating, PUH to top of liner or into tubing tail to ensure debris doesn’t fall in on the guns and stick the BHA. Confirm well is dead and re-kill if necessary before pulling to surface. 18. Pump pipe displacement while POOH. Stop at surface to reconfirm well is dead. Kill well if necessary. 19. Review well control steps and Standing Orders with crew prior to breaking lubricator connection and commencing breakdown of TCP gun string. 20. Ensure safety joint and TIW valve assembly are on-hand before breaking off lubricator to LD gun BHA. 21. RDMO CTU. 22. Turn well over to Operations POP. Make up PCE. -mgr Plug & ExtPerf C-24B Attachments: x Wellbore Schematic x Proposed Schematic x Tie-In Log x BOPE Schematic x Standing Orders x Equipment Layout x Sundry Change Form Plug & ExtPerf C-24B Wellbore Schematic Plug & ExtPerf C-24B Proposed Schematic CIBP –10,985’ C C Add perforations from 10,800’-10,900’ Plug & ExtPerf C-24B Tie-In Log Plug & ExtPerf C-24B Set CIBP at 10,985’ Perforate from 10,800’-10,900’ Plug & ExtPerf C-24B BOP Schematic Plug & ExtPerf C-24B Plug & ExtPerf C-24B Plug & ExtPerf C-24B Changes to Approved Sundry Procedure Date: Subject: Sundry #: Any modifications to an approved sundry will be documented and approved below. Changes to an approved sundry will be communicated to the AOGCC by the “first call” engineer. AOGCC written approval of the change is required before implementing the change. Step Page Date Procedure Change HAK Prepared By (Initials) HAK Approved By (Initials) AOGCC Written Approval Received (Person and Date) Approval: Operations Manager Date Prepared: Operations Engineer Date 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 C-24B Mill CIBP, Squeeze Liner, Extended Perf w CTU Hilcorp North Slope, LLC 3800 Centerpoint Dr, Suite 1400, Anchorage, AK 99503 212-063 50-029-20816-02-00 12468 Surface Intermediate Tieback Liner Liner Liner 9020 2665 9283 9731 590 2506 12284 13-3/8" 9-5/8" 7" 4-1/2" 3-1/2" x 3-1/4" x 2-7/8" 9016 70 - 2741 27 - 9310 25 - 9756 9584 - 10174 9961 - 12467 70 - 2691 27 - 8025 25 - 8443 8274 - 8846 8646 - 9020 12433 2670 4760 7020 7500 10530 12284 5380 6870 8160 8430 10160 12080 - 12280 4-1/2" 12.6# L-80 24 - 9592 9016 - 9016 Conductor 80 20" x 30" 29 - 109 29 - 109 4-1/2" Baker S-3 Packer 9535, 8228 9535 8228 Torin Roschinger Area Operations Manager Ron Phillips - (C) Ron.Phillips@hilcorp.com 907.317.5092 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 0028285, 0028305 24 - 8282 Liner hole at 11,080' MD. Cement in liner from 12284' - 12433' MD Squeeze 42.2-bbls 15.8-ppg cement with 2667-psi final squeeze pressure. 320 349 40199 23478 300 552 250 1550 1021 841 323-124 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 2:50 pm, May 16, 2023 Digitally signed by Torin Roschinger (4662) DN: cn=Torin Roschinger (4662), ou=Users Date: 2023.05.16 14:40:49 -08'00' Torin Roschinger (4662) DSR-5/16/23WCB 1-8-2024 RBDMS JSB 072723 ACTIVITY DATE SUMMARY 8/15/2022 CT #6 1.5" Coil Tubing - Job Scope - Drift/PPROF MIRU ***Job Continued 8/16/22*** 8/16/2022 CT #6 1.5" Coil Tubing - Job Scope - Drift/PPROF Drift w/ 2.25" JSN. Tag CIBP at 12088' down / 12076' up ctmd. Had to choke in well to get thru the LTP and 2-7/8" XO. Appear to have flow coming from below 2-7/8" XO. Pooh with well flowing. RIH w/ HES PPROF Logging Tools. PCC rolled well into Test Separator. While waiting on well to stabilize, C-pad went down. Standby on GC-3 to get pad up and running again. Popped well to production and in test. Unable to complete the pass at 30 fpm to the flag, had to shut the well in. Ran to the flag. Popped the well to the test separator. Started 30 fpm up pass from the flag. ***Job Continued on 8/17/22*** 8/17/2022 CT #6 1.5" Coil Tubing - Job Scope - Drift/PPROF ***job continued from 8/16/22*** Log up at 30 fpm with HES PPROF tools to the separator. Log 60 fpm pass from 12,045' ctmd to 9,800' ctmd. Log 90 fpm pass from 12,045' to 9150 ctmd. POOH. Download data. Determine gas entry at CIBP at 11084'. Perform Weekly BOP test. ***Job in Progress*** 8/18/2022 CTU#6 1.5 Job Scope - Drift/PPROF/mill CIBP/set CBP/sqz cmt ***Job continued from 8/17/22 MU YJ motor/mill BHA and RIH, Tag the plug 12099.6' ctmd. Had to work to get the plug moving, Moved to 12,191 ctmd and quit making headway. POOH. MU Venturi burn shoe RIH. Tag at 12166' work and able to move plug to 12405' ctmd. POOH to surface and check venturi/burn shoe for plug debris. ***Job in Progress*** 8/19/2022 CTU#6 1.5" CT Job Scope - Drift/PPROF/Mill CIBP/Set CBP/Sqz Cmt ***Job continued from 8/18/22*** Recovered pieces of CIBP and rocks in venturi. Break off YJ tools, change packoffs and then MU BOT tools and CBP. Set CBP 11,120' ctmd. RDMO. ***Job not completed*** 2/7/2023 LRS CTU#2 - 1.50" Blue Coil, Job Objective: Cement Squeeze, Mill cement and CIBP. MIRU CTU#2. MU Cementing BHA. *** Job Continued on 2-8-23*** Daily Report of Well Operations PBU C-24B Daily Report of Well Operations PBU C-24B 2/8/2023 LRS CTU#2 - 1.50" Blue Coil, Job Objective: Cement Squeeze, Mill cement and CIBP. MIRU CTU#2. Make up 2" BDJSN cementing BHA. Tagged CBP and corected depth to 11120. Flagged pipe for cleanout at 11000'. PUH to liner top and bullhead 250bbl of 1% KCL at followed by 130bbl of diesel. Establish baseline injection pressure of 1bpm at 180psi. Static pressure 121psi. Pumped 74bbl of 15.8ppg class G cement. Got a 1500psi bump after 38bbl of cement behind pipe. Lay in remaining cement and work squeeze pressure up to 2667. Ultimately pushed 42.2bbl of cement behind pipe. Cleanout down to hard tag at ~ 10910' CTM. Pump 10 bbl gel pill and chase OOH jetting across all jewelry. *** Job Continued on 2-9-23*** 2/9/2023 LRS CTU#2 1.50" Blue Coil. Job Objective: Cement Squeeze, Mill Cement & CIBP Continue chasing gel OOH & jetting across all jewelry. Unstab and perform weekly BOP test while WOC. RIH w/ 5 bladed junk mill. Dry tag TOC - Elec = 10,929' CTM. Making hole at 5 fpm w/ no motor work & not taking wt @ Elec = 10,944' CTM. Over pull / Suspect green cement. Pump 10 bbl gel pill. Over pulls. POOH above LTP. Drop ball to rupture circ sub. Discuss w/ OE - decide to RDMO & return to mill at a later date. Cont' POOH. FP coil 25 bbls diesel. FP well to 2500' TVD (38 bbls diesel). RDMO. ***Job Incomplete*** 2/11/2023 LRS CTU 2 1.5" Blue Coil, Job objective: Squeze liner hole, and mill out MIRU. Make up and RIH with 1-11/16" BOT milling BHA w/ 2.300" 5-blade junk mill. Tagged TOC at ~ 10947' E / 10947' M and start milling. ***Job in Progress*** 2/12/2023 LRS CTU #2 1.5" Blue Coil. Job Objective: Squeeze LNR, Mill Out Multiple stalls and not making any progress. POOH to check tools. RBIH with 2.28" PDC mill and mill cement from 10,955' to the CBP at 11,097' CTM / 11,120' MD (had to fight a tight spot at 11,050'). Push the plug to ~ 11,170' and continue milling. ***Job in Progress*** 2/13/2023 LRS CTU #2 1.5" Blue Coil. Job Objective: Squeeze LNR, Mill Out Continue milling at 11,170' and eventually get the plug moving down again. Work it down to ~ 11,550'. Acting like either the motor is starting to give out or the coil is approaching lock-up. POOH to check BHA. Swap out motor and jars, and add a tempress. RBIH with 2.28" diamond parabolic mill. Sat down in the crossover at 10,933' MD and become detained, lose returns. Work pipe and able to get free. Pump multiple gel pills to clean out the heal of the well. Continue RIH and tag at 10,572'. Start milling at 1-2 FPM, appear to be in cement again. Mill down to 10,727'. ROP slowed to <0.5 FPM, POOH to check tools and the 6k burst disk had blown. MU 2.28" PDC mill and RBIH. ***Job in Progress*** 2/14/2023 LRS CTU #2 1.5" Blue Coil. Job Objective: Squeeze LNR, Mill Out Continue RIH with 2.28" PDC mill. Mill cement from 11720' to 11744'. Multiple hard stalls, bit stuck each time, jars will not fire. POOH and swap out jars. RBIH with 2.30" 5-blade junk mill. Time mill from 11744' - 11750'. POOH and swap to 2.28" PDC mill. RBIH and time mill 11750' - 11754'. POOH and swap to 2.28" diamond parabolic mill. ***Job in Progress*** 2/15/2023 LRS CTU #2 1.5" Blue Coil. Job Objective: Squeeze LNR, Mill Out Continue RIH with 2.28" diamond parabolic mill. Mill from 11754' - 12120'. ***Job in Progress*** Daily Report of Well Operations PBU C-24B 2/16/2023 LRS CTU #2 1.5" Blue Coil. Job Scope: Squeeze LNR, Mill Out Continue milling cement 12120' - 12140'. POOH to check tools. RBIH with 2.28" diamond parabolic mill. Mill cement from 12140' - 12207'. Pump 8 BBL gel pill and chase OOH at 80%. Freeze protect to 2500' TVD with DSL. ***Job in Progress*** 2/17/2023 LRS CTU #2 1.5" Blue Coil. Job scope: Squeeze LNR, Mill Out Perform weekly BOP test. RDMO & head to DS09-09 for priority post CTD work. ***Job Incomplete*** 2/24/2023 T/I/O = VAC/240/VAC. Temp = SI. T FL near Surface. SV, WV = C. SSV, MV = O. IA, OA = OTG. 16:30 2/26/2023 T/I/O = VAC/240/VAC. Temp = SI. MIT-T to 1000 psi FAILED (eval cement). No AL. T FL @ 970' (15 bbls). IA FL @ 5921' (sta # 3 dome). Used 35.6 bbls of diesel to increase TP to 540 psi. Monitored for 30 min. Lost 290 psi in the 1st 15 min & 60+ psi in 2nd 15 min for a total loss of 540+ psi. Final WHPs = VAC/240/VAC. SV, WV, SSV = C. MV = O. IA, OA = OTG. 05:00 4/27/2023 Coil Tubing Unit 9 1.75" Coil Tubing .156" WT - Job Scope = Mill/Log/Perf MIRU. MU YJ milling assembley 1.69" motor w/ 2.27" Bi-cone bit. RIH. Stack down @ 11,733' CTM. Pump sweep. RIH to 12,189' CTM. Locking up. POOH ***Continue on WSR 4/28/23*** 4/28/2023 Coil Tubing Unit 9 1.75" Coil Tubing .156" WT - Job Scope = Mill/Log/Perf POOH. BD YJ milling assembly. BOP Test. MU YJ milling assembly w/ Tempress, 1.69" motor, 2.27" Bi-cone Bit. RIH. Tag 12,193' CTM / 12,223' Mech. Milling Cmt. ROP 25 fph (total of 79' milled) Lost 400 psi CP. POOH to check tools. ***Continue on WSR 4/29/23*** 4/29/2023 Coil Tubing Unit 9 1.75" Coil Tubing .156" WT - Job Scope = Mill/Log/Perf POOH. BD YJ milling assembly - 5K burst disc blown - install new 5K burst disc - RIH w/ YJ 1.69" tempress / motor w/ 2.27" Bi-cone Bit. RIH w/ milling string, mill to 12277'. ROP 0.5ft/hr not seeing any motor work. POOH to inspect tools and change bit. Swapped bit to 2.25" Junk Mill. RIH w/ YJ 1.69" tempress / motor w/ 2.25" Piranha Junk Mill Bit. Set down 12207'. start milling. 3 stalls and lost CP. POOH. Lost 3rd of the face on Piranha mill (one blade). 5K Burst Disk ruptured. MU new Dual Circ Sub w/ 6K burst Disk and Venturi/ 2.25" burnshoe. RIH ***Continue on WSR 4/30/23*** 4/30/2023 Coil Tubing Unit 9 1.75" Coil Tubing .156" WT - Job Scope = Mill/Log/Perf RIH w/ Venturi/ 2.25" Burnshoe. Tagged @ 12,205' CTM / 12,235' Mech. Venturi thru 12,190 thru 12,211' for hour w/ 3 stalls. worked slowly down to last know TOC 12,277' in hour and 10 mins w/ 5 more stalls. Last Tag detained w/ CT - worked get jars chalked and fired. POOH. Check Venturi at surface. Recover cement and rubber elements. Clean up venturi and make tools back up. RIH w/ Venturi/ 2.25" Burnshoe. Dry tag @ 12277'. Pick up weight and Venturi back down to 12277' stack weight and POOH. Retrieved cement, rubber and metal in venturi. Burn shoe face worn flat. RIH w/ Venturi / 2.30" Mule Shoe. Stack down @ 12,200' CTM / 12,224' Mech. Work down to 12,210' CTM. Can NOT get any deeper. POOH check Venturi. ***Continue on WSR 5/1/23*** Daily Report of Well Operations PBU C-24B 5/1/2023 Coil Tubing Unit 9 1.75" Coil Tubing .156" WT - Job Scope = Mill/Log/Perf POOH to check Venturi. BD YJ Venturi/Mule Shoe. No marks on Mule Shoe. Cmt in flutter cage / little Cmt in Screen / Metal Piece in Screen Sub 1-3/4" x 1/4" 3/4" high. MU YJ motor, Venturi/2.30" Burnshoe. RIH work tools down to 12285' and venturi on bottom. POOH. Cement recovered in venturi. Make up TCP logging tools and RIH. Tag @ 11,080' CTM / 11,119 Mech. Can NOT make past after multiple attempts. POOH. BD HES Mem Tools. MU YJ 2.30¿ Parabolic milling assembly w/ tempress. ***Continue on WSR 5/23*** 5/2/2023 Coil Tubing Unit 9 1.75" Coil Tubing .156" WT - Job Scope = Mill/Log/Perf RIH w/ YJ 2.30" Parabolic milling assembly w/ tempress. RIH clean thru Squeezed hole in LNR @ 11,080 CTM. Stacked down at 12,218 & 12,223¿ CTM. Start pumping stalled @ 12,243'. Worked down to 12,270' CTM / 12,285' Mech. PUH clean. Work CT pump 11 bbl Sweep. Chase up out LNR. RIH dry drift from 11,700' - 12,270' CTM clean. Chase OOH sweep. Rig down mill. Rig up logging run for correlation. RIH w/ MHA/GR/CCL. Dry drift to 12200'. Unable to work past. Pump down coil and attemt to get past 12200'. Unable to go deeper than 12200'. Start logging pass from depth and POOH. Corr Depth 2'. Deploy 200' 2" guns in to wellbore. ***Continue on WSR 5/3/23*** 5/3/2023 Coil Tubing Unit 9 1.75" Coil Tubing .156" WT - Job Scope = Mill/Log/Perf RIH w/ 200' of 2" Millennium HES Perf Guns. Flag @ 12,186.4' / 11,966' Mech. Corr Depth to Btm Shot 12,161.26'. RIH Tag @ 12,290'. (PUH to 12,280' Btm Shot and verified OE got deeper then Log and approved Perf depths 12,080' - 12,280'). Load 1/2" Ball & launch confirm ball rolling in CT. Ball on Seat @ 27.5 / Fired @ 2900 psi/ lost returns. POOH pumping down back side slick 1% kcl w/ SL. Good NO FLOW. Un-Deploy 200' Spent Perf Guns. FP well 38 bbls diesel. RDMO CTU 9 ***Job Complete*** ¿ Worked down to 12,270' CTM / 12,285' Mech. PUH g@ clean. Work CT pump 11 bbl Sweep. Chase up out LNR. RIH dry drift from 11,700' - 12,270' CTM clean. Chase OOH sweep. Rig down mill. gg g RIH w/ 200' of 2" Millennium HES Perf Guns. Flag @ 12,186.4'/ 11,966' Mech. Corrg@ Depth to Btm Shot 12,161.26'. RIH Tag @ 12,290'. (PUH to 12,280' Btm Shot and g@ ( verified OE got deeper then Log and approved Perf depths 12,080' - 12,280'). Loadgg) 1/2" Ball & launch confirm ball rolling in CT. Ball on Seat @ 27.5 / Fired @ 2900 psi/g @@ lost returns. POOH pumping down back side slick 1% kcl w/ SL. Good NO FLOW.g Un-Deploy 200' Spent Perf Guns 7. If perforating: 1. Type of Request: 2. Operator Name: 3. Address: 4. Current Well Class:5. Permit to Drill Number: 6. API Number: 8. Well Name and Number: 9. Property Designation (Lease Number):10. Field: Abandon Suspend Plug for Redrill Perforate New Pool Perforate Plug Perforations Re-enter Susp Well Other Stimulate Fracture Stimulate Alter Casing Pull Tubing Repair Well Other: Change Approved Program Operations shutdown What Regulation or Conservation Order governs well spacing in thes pool? Will planned perforations require a spacing exception?Yes No 11. Total Depth MD (ft): Total Depth TVD (ft): Effective Depth MD: Effective Depth TVD: MPSP (psi): Plugs (MD): Junk (MD): PRESENT WELL CONDITION SUMMARY Perforation Depth MD (ft): Perforation Depth TVD (ft):Tubing Size: Tubing Grade: Tubing MD (ft): Packers and SSSV Type:Packers and SSSV MD (ft) and TVD (ft): Casing Length Size MD TVD Burst Collapse Exploratory Stratigraphic Development Service 12. Attachments: 14. Estimated Date for Commencing Operations: 13. Well Class after proposed work: 15. Well Status after proposed work: 16. Verbal Approval: 17. I hereby certify that the foregoing is true and the procedure approved herein will not be deviated from without prior written approcal. Proposal Summary Wellbore schematic BOP SketchDetailed Operations Program OIL GAS WINJ WAG GINJ WDSPL GSTOR Op Shutdown Suspended SPLUG Abandoned ServiceDevelopmentStrastigraphicExploratory Authorized Name and Digital Signature with Date: Authorized Title: Contact Name: Contact Email: Contact Phone: AOGCC USE ONLY Commission Representative: Conditions of approval: Notify Commission so that a representative may witness Sundry Number: Location ClearanceMechanical Integrity TestBOP TestPlug Integrity Other: Post Initial Injection MIT Req'd? Spacing Exception Required?Yes Yes No No Subsequent Form Required: Approved By:Date: APPROVED BY THE AOGCCCOMMISSIONER PBU C-24B Extended CTU BHA Hilcorp North Slope, LLC 3800 Centerpoint Dr, Suite 1400, Anchorage, AK 99503 212-063 50-029-20816-02-00 341J ADL 0028285, 0028305 12468 Surface Intermediate Tieback Liner Liner Liner 9020 2665 9283 9731 590 2506 12207 13-3/8" 9-5/8" 7" 4-1/2" 3-1/2" x 3-1/4" x 2-7/8" 9014 70 - 2741 27 - 9310 25 - 9756 9584 - 10174 9961 - 12467 2470 70 - 2691 27 - 8025 25 - 8443 8274 - 8846 8646 - 9020 12433 2670 4760 7020 7500 10530 12207 5380 6870 8160 8430 10160 12200 - 12400 4-1/2" 12.6# L-80 24 - 95929014 - 9019 Conductor 80 20" x 30" 29 - 109 29 - 109 4-1/2" Baker S-3 Packer No SSSV Installed 9535 8228 Date: Stan Golis Sr. Area Operations Manager Ron Phillips - (C) Ron.Phillips@hilcorp.com 907.317.5092 PRUDHOE BAY 3/13/2023 Current Pools: PRUDHOE OIL Proposed Pools: PRUDHOE OIL STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION APPLICATION FOR SUNDRY APPROVALS 20 AAC 25.280 Comm. Comm.Sr Pet Eng Sr Pet Geo Sr Res Eng Form 10-403 Revised 10/2022 Approved application is valid for 12 months from the date of approval.Submit PDF to aogcc.permitting@alaska.gov By Samantha Carlisle at 8:30 am, Feb 28, 2023 323-124 Digitally signed by Stan Golis (880) DN: cn=Stan Golis (880), ou=Users Date: 2023.02.27 16:43:03 -09'00' Stan Golis (880) DSR-2/28/233/1/2023 2470 10-404 MGR03MAR23GCW 03/07/23JLC 3/7/2023 3/7/23Brett W. Huber, Sr. Digitally signed by Brett W. Huber, Sr. Date: 2023.03.07 12:17:44 -09'00' RBDMS JSB 030923 Extended Addperfs Well:C-24B PTD:212-063 API: 50-029-20816-02 Well Name:C-24B API Number:50-029-20816-02 Current Status:Producer Rig:CTU Estimated Start Date:3/13/23 Estimated Duration:3days Regulatory Contact:Abbie Barker 564-4915 Permit to Drill Number:212-063 First Call Engineer:Ron Phillips (907) 317-5092 (c)(907) 564-4696 (o) Second Call Engineer:Kirsty Glasheen (907) 350-4310 (c)(907) 564-5258 (o) Estimated Bottom Hole Pressure:3250 psi @ 8,800’ TVD 7.2 PPGE Maximum Expected BHP:3350 psi @ 8,800’ TVD 7.4 PPGE | Average Ivishak BHP) Max. Anticipated Surface Pressure:2470psi (Based on 0.1 psi/ft. gas gradient) Last SI WHP:1200 psi (Taken on 7/7/2018) Min ID:2.37” 45KB LTP at 9,9445’ MD Max Angle:94 Deg @ 10,558’ MD Tie-In Log:SLB Memory Compensated Neutron Log dated Sept. 21, 2012 Brief Well Summary: Completed in 2012 as a Zone 2 well. Well came on strong but with high gas rates from the start of production. Gas rates were 26 mmscf on the first test in HP. Initial perfs were 200' in Zone 2A at the toe of the well. Drilling had a poor cement job due to lost circulation and had one plug back during drilling. Well started leaning out around 2017/2018 and gas rose. The next stage of perfs were planned, and a CBL was completed on May 28, 2022 showing good cement above and below liner top. The well also had good cement in target perf areas, so went ahead with CIBP set. After CIBP was set above all the perfs, the well failed a drawdown test, and flowed into the test separator at almost identical pre-plug set rates (40mmscfd uncompetitive gas). This indicated a mechanical failure in the well, so a PPROF was run on 8/16/22 which identified a large hole at 11,080 contributing most of the flow. There could have been some flow coming from behind the CIBP as well, but not a significant amount. On 2/9/23, we squeezed the hole in liner and milled out the CIBP at 11,097’, pushed the CIBP down hole to 11,550’ then hit hard cement and milled about 300’ per day until we had to RDMO to 12,207’ with the original perfs from 12,200’ to 12,400’ and PBTD at 12,433’. The plan forward is to mill cement to 12,433’ then perform an extended reperforation job from 12,200’ to 12,400’ (these are the original perforation depths that we inadvertently cemented up on 2/9/23). Objective: Mill cement from 12,207’ to 12,433’ MD. Reperforate the 2012 original perforations from 12,200’ to 12,400’. Procedure: Coiled Tubing Notes: x Due to the necessary open hole deployment of Extended Perforating jobs, 24-hour crew and WSS coverage is required. x The well will be killed and monitored before making up the initial perfs guns. This is generally done during the drift/logging run. This will provide guidance as to whether the well will be killed by bullheading or circulating bottoms up throughout the job. If pressure is seen immediately after perforating, it will either be killed by bullheading while POOH or circulating bottoms up through the same port that opened to shear the firing head. 1. After MU MHA and pull testing the CTC, tag-up on the CT stripper to ensure BHA cannot pull through the brass upon POOH with guns. 2. RIH with motor and mill to mill out cement in 2-7/8” liner from 12,207’ to 12,433’ MD. Extended Addperfs Well:C-24B PTD:212-063 API: 50-029-20816-02 3. Keep wellbore full of KWF, 8.4 ppg 1% KCl or seawater (currently isolated from reservoir with cement squeeze). a. Wellbore volume to PBTD = 169 bbls b. 4-1/2” Tubing – 9925’ = 152 bbls c. 3-1/4” Liner – 9925’ to 10,933’ = 8.1 bbls d. 2-7/8” Liner – 10,933 to 12,433’ = 8.7 bbls 4. MU and RIH with logging tools and drift nozzle to resemble TCP guns. Drift to ~12,433’, log OOH and flag pipe as necessary. 5. POOH and confirm good data. Note: The 9/21/2012 MCNL is -2’ off depth to the reference log. Shale marker at 11,451’ MD on the reference log is at 11,449’ MD on tie-in log. Shale marker at 11,415’ on the reference log is 11,413’ MD on the tie in log. So we need to subtract 2’ from the tie-in log depths to be on depth with where we are perf’ed based on reference log. Perf interval on tie in log will be 12,198’ – 12,398’MD to be on depth with where we want to shoot in C-24B. 6. Notify OE/GEO to verify tie-in before RIH with TCP guns. 7. At surface, prepare for deployment of TCP guns. 8. Confirm well is dead. Bleed any pressure off to return tank. Kill well w/KWF, 8.4 ppg 1% KCl or seawater as needed. Maintain continuous hole fill taking returns to tank until lubricator connection is reestablished. Fluids man-watch must be performed while deploying perf guns to ensure the well remains killed and there is no excess flow. 9. *Perform drill by picking up safety joint with TIW valve and space out before MU guns. Review well control steps with crew prior to breaking lubricator connection and commencing makeup of TCP gun string. Once the safety joint and TIW valve have been spaced out, keep the safety joint/TIW valve readily accessible near the working platform for quick deployment if necessary. a. At the beginning of each job, the crossover/safety joint must be physically MU to the perf guns one time to confirm the threads are compatible. 10. Break lubricator connection at QTS and begin makeup of TCP guns per schedule below. Constantly monitor fluid rates pumped in and fluid returns out of the well. Fluids man-watch must be performed while deploying perf guns to ensure the well remains killed and there is no excess flow. C-24B Perf Schedule Perf Interval Perf Length Gun Length Weight of Gun (lbs) ~5ppf 12,200’-12,400’200’200’1000 lbs 11. RIH with perf guns and tie-in to coil flag correlation and pickup and perforate interval per Perf Schedule above. a. Note any tubing pressure change in WSR. 12. After perforating, PUH to top of liner or into tubing tail to ensure debris doesn’t fall in on the guns and stick the BHA. Confirm well is dead and re-kill if necessary before pulling to surface. 13. Pump pipe displacement while POOH. Stop at surface to reconfirm well is dead. Kill well if necessary. 14. Review well control steps with crew prior to breaking lubricator connection and commencing breakdown of TCP gun string. 15. Ensure safety joint and TIW valve assembly are on-hand before breaking off lubricator to LD gun BHA. 16. RDMO CTU. 17. FP well. Make up PCE. Extended Addperfs Well:C-24B PTD:212-063 API: 50-029-20816-02 Attachments: 1. Current Wellbore Schematic 2. Proposed Schematic 3. Coil Tubing BOPE Schematic 4. Standing Orders for Open Hole Well Control during Perf Gun Deployment 5. Equipment Layout Diagram 6. Tie In Log 7. Sundry Change Form Extended Addperfs Well:C-24B PTD:212-063 API: 50-029-20816-02 Current Wellbore Schematic Extended Addperfs Well:C-24B PTD:212-063 API: 50-029-20816-02 Proposed Schematic Extended Addperfs Well:C-24B PTD:212-063 API: 50-029-20816-02 Coiled Tubing BOPs Extended Addperfs Well:C-24B PTD:212-063 API: 50-029-20816-02 Standing Orders for Open Hole Well Control during Perf Gun Deployment Standing Orders for Service Coiled Tubing Operations While Deploying Extended Length Perforating BHA WELL BEGINS FLOWING DURING OPEN HOLE DEPLOYMENT Pull BHA above blind/shear rams, and close blind/shears. Space out BHA with safety joint above slip bowl, set hand slips Install safety joint with open TIW Can BHA be pulled above blind/shear rams in a single pick? Pull hand slips YES NO Begin Notifications Close Upper Pipe/Slip Ram Close TIW Close choke valves, monitor and record SIWHP Close choke line. Monitor and record SIWHP Lower safety joint and space out over BOP, set hand slips Begin Notifications Extended Addperfs Well:C-24B PTD:212-063 API: 50-029-20816-02 Equipment Layout Diagram Extended Addperfs Well:C-24B PTD:212-063 API: 50-029-20816-02 Tie-In Log Extended Addperfs Well:C-24B PTD:212-063 API: 50-029-20816-02 Extended Addperfs Well:C-24B PTD:212-063 API: 50-029-20816-02 Extended Addperfs Well:C-24B PTD:212-063 API: 50-029-20816-02 Extended Addperfs Well:C-24B PTD:212-063 API: 50-029-20816-02 Extended Addperfs Well:C-24B PTD:212-063 API: 50-029-20816-02 Hilcorp North Slope, LLCHilcorp North Slope, LLCChanges to Approved Work Over Sundry ProcedureDate: February 27, 2023Subject: Changes to Approved Sundry Procedure for Well C-24BSundry #:Any modifications to an approved sundry will be documented and approved below. Changes to an approved sundry will be communicated to theAOGCC by the workover (WO) “first call” engineer. AOGCC written approval of the change is required before implementing the change.StepPageDate Procedure ChangeHNSPreparedBy (Initials)HNSApprovedBy (Initials)AOGCC WrittenApproval Received(Person and Date)Approval:Asset Team Operations Manager DatePrepared:First Call Operations Engineer Date David Dempsey Hilcorp Alaska, LLC Sr. Geotechnician 3800 Centerpoint Drive, Suite 1400 Anchorage, AK 99503 Tele: (907) 777-8337 E-mail: david.dempsey2@hilcorp.com Please acknowledge receipt by signing and returning one copy of this transmittal. Received By: Date: Date: 10/3/2022 To: Alaska Oil & Gas Conservation Commission Natural Resource Technician 333 W 7th Ave Suite 100 Anchorage, AK 99501 SFTP DATA TRANSMITTAL T#20221003 Well API #PTD #Log Date Log Company Log Type AOGCC Eset# BCU 12A 501332053001 214070 8/10/2022 Halliburton CH PPROF BRU 222-34 502832018600 222039 9/15/2022 Halliburton CH RBT BRU 244-27 502832018500 222038 9/13/2022 Halliburton CH RBT END 1-45 500292199100 189124 8/11/2022 Halliburton CH PERF KBU 22-06Y 501332065000 215044 8/22/2022 Halliburton CH PPROF KBU 43-07Y 501332062500 214019 9/7/2022 Halliburton CH PPROF MPU C-24A 500292302001 209134 8/3/2022 Halliburton CH COILFLAG MPU L-46 500292355100 215118 9/10/2022 Halliburton CH MFC24 MPU S-34 500292317100 203130 9/3/2022 Halliburton CH MFC24 NS-10 500292298500 200182 8/18/2022 Halliburton CH WFL- TMD3D NS-32 500292317900 203158 8/17/2022 Halliburton CH WFL- TMD3D PBU 04-30 500292134500 185089 9/17/2022 Halliburton CH RMT3D PBU 05-24A 500292220401 204218 9/12/2022 Halliburton CH CAST PBU 11-16 500292158100 186078 9/10/2022 Halliburton CH PPROF PBU 11-27A 500292163801 222036 8/20/2022 Halliburton CH RBT PBU C-24B 500292081602 212063 8/16/2022 Halliburton CH PPROF PBU E-100A 500292281901 218157 9/20/2022 Halliburton CH LDL PBU S-106 500292299900 201012 9/12/2022 Halliburton CH RBT Please include current contact information if different from above. T37103 T37104 T37105 T37106 T37107 T37108 T37109 T37110 T37111 T37112 T37113 T37114 T37115 T37116 T37117 T37118 T37119 T37120 PBU C-24B 500292081602 212063 8/16/2022 Halliburton CH PPROF Kayla Junke Digitally signed by Kayla Junke Date: 2022.10.05 11:39:32 -08'00' By Samantha Carlisle at 7:39 am, Sep 06, 2022 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): Abandon Suspend Plug for Redrill Perforate New Pool Perforate Plug Perforations Re-enter Susp Well Other Stimulate Fracture Stimulate Alter Casing Pull Tubing Repair Well Other: Change Approved Program Operations shutdown 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 C-24B Hilcorp North Slope, LLC 3800 Centerpoint Dr, Suite 1400, Anchorage, AK 99503 212-063 50-029-20816-02-00 12468 Surface Intermediate Tieback Liner Liner Liner 9020 2665 9283 9731 590 2506 12100 13-3/8" 9-5/8" 7" 4-1/2" 9016 70 - 2741 27 - 9310 25 - 9756 9584 - 10174 9961 - 12467 70 - 2691 27 - 8025 25 - 8443 8274 - 8846 8646 - 9020 None 2670 4760 7020 7500 10530 12100 5380 6870 8160 8430 10160 12200 - 12400 4-1/2" 12.6# L-80 24 - 9592 9014 - 9019 Conductor 80 20" x 30" 29 - 109 29 - 109 4-1/2" Baker S-3 Packer 9535 9535 8228 Stan Golis Sr. Area Operations Manager Claire Mayfield Claire.Mayfield@hilcorp.com 907-564-4375 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 13.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 0028285, 0028305 No SSSV Installed 24 - 8282 8228 N/A N/A 426 465 43397 45302 357 270 1000 200 1060 1067 N/A STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS Sr Pet Eng: Sr Pet Geo: Form 10-404 Revised 10/2021 Submit Within 30 days or Operations Sr Res Eng: 3-1/2" x 3-1/4" x 2-7/8" By Meredith Guhl at 1:51 pm, Jul 19, 2022 Digitally signed by Stan Golis (880) DN: cn=Stan Golis (880), ou=Users Date: 2022.07.19 13:42:21 -08'00' Stan Golis (880) MGR07SEP2022 ACTIVITY DATE SUMMARY 5/25/2022 T/I/O = SSV/1300/Vac. Temp = SI. Bleed IAP to CLP ( E-Line Request ). No AL. IA FL @ 5714' ( 207' above Sta #3, Dome ). Bled IAP to C-25 production from 1300 psi to 930 psi in 45 min. Monitor 30 min. IAP unchanged. Final WHP's = SSV/930/Vac. SV, WV, SSV = C. MV = O. IA, OA = OTG. 17:00. 5/28/2022 ***WELL FLOWING ON ARRIVAL*** (PPROF) MIRU HES E-LINE. WELL FLOWING THRU TEST SEPARATOR. CHOKED BACK TO ~ 12-15MM. PERFORM PPROF OVER LTP FROM 9850' - 10050' FIELD SPLITS INDICATE 19% OF FLOW COMING FROM LTP PERFORM 5 MIN STATION STOPS ABOVE LTP, PUP JT ABOVE QCLL, PUP JT BELOW QCLL, BELOW PORT HOLE AND BELOW LTP. ***JOB CONTINUES ON 29MAY22 WSR*** 5/29/2022 Assist Eline (PERFORATING) Pumped 2 bbls 50/50 meth and 210 bbls 120* 1% KCL w/ safelube down Tbg for load. Pumped 204 bbls 1% KCL w/ safelube down tbg at min rate while ELine logged. FP Tbg w/ 40 bbls crude. Eline in control of wel per LRS departure. 5/29/2022 ***JOB CONTINUES FROM 28MAY22 WSR*** (CEMENT BOND LOG) RIG UP WELLTEC 2-1/8" TRACTOR, HES RBT TOOLS & 2.25" WRP DRIFT. LRS LOADED & KILLED WELL WITH 1% KCL W/ SAFELUBE. DEVIATE OUT AT 10360'. BEGIN TRACTORING. TAG AT 11,830' BUT AFTER FEW ATTEMPTS ABLE TO GET BY WITHOUT ANY ISSUE. TRACTOR DOWN TO 12180'. LOG RBT AT 40FPM UP TO 9300'. FIELD PICK TOC AT 9620'. SEND LOG TO TOWN OE. POOH. LAY DOWN FOR THE NIGHT. ***CONTINUE JOB ON 5/30/22. 5/30/2022 T/I/O=1300/800/0 Temp=S/I (TFS Unit 4 Assist E-Line with Pump Down) Pumped 3 bbls of 50/50 followed by 100 bbls of KCL down TBG to Assist E-Line with making Target Depth. Further pumped 122 bbls of Crude down TBG for Freeze Protect. E-Line in control of well upon TFS Departure. Final WHPS= 100/850/0 5/30/2022 ***JOB CONTINUES FROM 29MAY22 WSR*** (PLUG SET) ATTEMPT TO SET 2.875" NORTHERN SOLUTIONS CIBP COULD NOT TRACTOR OR PUMP PASSED 11800' RDMO E-LINE ***WELL SHUT IN ON DEPARTURE*** 6/9/2022 T/I/O = SSV/840/VAC. Temp = SI. Bleed IAP (eval TxIA). No AL. IA FL @ 5720' (201' above sta # 3 dome). Bled IAP to OT to 230 psi in 30 min. Monitored for 30 min. IAP & IA FL unchanged. Final WHPs = SSV/230/VAC. SV, WV, SSV = C. MV = O. IA, OA = OTG. 01:30 6/30/2022 CTU #6 1.5" CT Job Objective; Drift and log/ CIBP / Adperf MIRU from DS 06. MU Northern CTC and MHA. Pull test and pressure test. Set down Inj/lubricator on deck and secure for the night (day light crew) ***Job Continued on 07/01/22*** Daily Report of Well Operations PBU C-24B Daily Report of Well Operations PBU C-24B 7/1/2022 CTU#6 1.5" CT Job Objective: Drift and log/CIBP/Adperf MU Read logging tools w/carrier. RIH w/ NS CTC 1.69"x.28', MHA 1.69"x2.3', XO 2.13"x0.5', Logging tool w/carrier 2.2"x10.72', XO 2.13"x.24', JSN 2.25"x.6' OAL 14.64' Open well and RIH, 2450 WHP. Pump 120 bbls of diesel down CTBS to bring down WHP to 530 psi for PU weights. Stop at depth 12150' e/ 12155 m/ 11149.75 Read, Start logging, stop at flag depth 11900e/11905m/11899.79 Read. Paint (ORANGE/YELLOW ) Flag. Coninue logging to liner top at 80'/min. POOH. At surface, break off logging tools. Good data. +19' correction log sent to OE and Geo for confirmation. MU NS setting tool and CIBP. Correction confirmed at +19'. RIH w/NS CTC 1.69"x.28', MHA 1.69"x2.3', Rupture sub 1.69"x.34' w 5k burst disk, ST 1.75"x4.41', AS 2.1"x.33', CIBP 2.1"x0.96' OAL=8.62' . Set CIBP at 12100', POOH. Break tools and secure unit for the night. Pad Op to flow well to test to try to get gas leak rate past LTP, per OE. ***Job Continued on 7/2/22*** 7/2/2022 CTU#6 1.5" CT Job Objective: Drift and log/CIBP/Adperf Well NOT flowed to test. Discuss with OE and decide to try drawdown to tank then flow. WHP start at 1600psi (straight gas), drop to 1300 psi (90 bbl diesel returned of 120 pummped), then increases to 2200 psi (gas/diesel mix). Remove BOPs from well and perform weekly BOP test while flowing well to test seperator to try to get gas leak rate past LTP. Complete BOP test and secure unit for night (daylight crew only) ***Job Continued on 7/3/22*** 7/3/2022 CTU#6 1.5" CT: Job Objective: Drift and Log/ CIBP/ Adperf Well flowed overnight to test seperator. OE decides to suspend perf runs in favor of checking CIBP and possible log of leaking LTP. MU drift BHA and RIH to confirm CIBP depth. Tag CIBP at 12090' CTM twice to confirm, 3k set down. POOH. Discuss with OE possible PPROF and/or caliper run. Read has tools available. Wait on OE decision. Set down injector/lubricator on deck and secure unit for night. ***Job Incomplete. Will return at a later date*** OAL=8.62' . Set CIBP at 12100', POOH. checking CIBP and possible log of leaking LTP. MU drift BHA and RIH to confirm CIBP depth. Tag CIBP at 12090' CTM twic Kaitlyn Barcelona Hilcorp Alaska, LLC GeoTechnician 3800 Centerpoint Drive, Suite 1400 Anchorage, AK 99503 Tele: 907 564-4389 E-mail: kaitlyn.barcelona@hilcorp.com Please acknowledge receipt by signing and returning one copy of this transmittal or FAX to 907 564-4422 Received By: Date: Date: 07/11/2022 To: Alaska Oil & Gas Conservation Commission Natural Resource Technician 333 W 7th Ave Suite 100 Anchorage, AK 99501 SFTP DATA TRANSMITTAL Well API # PTD # Log Date Log Company Log Type Notes BCU 18RD 50133205840100 222033 6/11/2022 Yellowjacket GPT-PERF + Report BCU 18RD 50133205840100 222033 6/18/2022 Yellowjacket GPT-PERF + Report BCU 18RD 50133205840100 222033 6/7/2022 Yellowjacket GPT-PLUG + Report BCU 24 50133206390000 214112 6/16/2022 Halliburton PPROF BCU 24 50133206390000 214112 5/23/2022 Yellowjacket GPT-PERF + Report BCU 24 50133206390000 214112 5/26/2022 Yellowjacket GPT-PERF + Report BCU 7A 50133202840100 214060 6/21/2022 Yellowjacket CBL BCU 7A 50133202840100 214060 6/15/2022 Yellowjacket GAMMA RAY + Report BRU 232-26 50283200770000 184138 5/25/2022 Yellowjacket CBL CLU 01RD 50133203230100 203129 5/19/2022 Yellowjacket PERF + Report CLU 01RD 50133203230100 203129 5/24/2022 Yellowjacket PERF + Report CLU 09 50133205440000 204161 5/27/2022 Yellowjacket PERF + Report CLU-1RD 50133203230100 203129 5/28/2022 Halliburton PPROF + Report END 1-17A 50029221000100 196199 5/26/2022 Halliburton LDL END 1-45 50029219910000 189124 5/23/2022 Halliburton LDL + Report END 3-17F 50029219460600 203216 6/15/2022 AK E-Line PLUG CUT FALLS CREEK 3 50133205240000 203102 6/4/2022 Yellowjacket PERF + Report HVB B-16 50231200400000 212133 6/14/2022 AK E-Line CIBP KALOTSA 1 50133206570000 216132 7/7/2022 Yellowjacket PERF + Report KBU 11-07 50133205560000 205165 6/16/2022 Yellowjacket GPT-PERF + Report KBU 11-07 50133205560000 205165 6/20/2022 Yellowjacket GPT-PERF + Report KBU 33-06X 50133205290000 203183 6/22/2022 Yellowjacket CBL MPU B-28 50029235660000 216027 5/27/2022 Halliburton LDL MPU B-28 50029235660000 216027 5/27/2022 Halliburton MFC + Report MPU B-30 50029235710000 216153 5/18/2022 Halliburton PERF MPU E-06 50029221540000 191048 5/28/2022 Halliburton MFC + Report Kaitlyn Barcelona Hilcorp Alaska, LLC GeoTechnician 3800 Centerpoint Drive, Suite 1400 Anchorage, AK 99503 Tele: 907 564-4389 E-mail: kaitlyn.barcelona@hilcorp.com Please acknowledge receipt by signing and returning one copy of this transmittal or FAX to 907 564-4422 Received By: Date: MPU E-35 50029236150000 218152 6/15/2022 Halliburton MFC + Report MPU L-50 50029235550000 215132 6/24/2022 Read COIL FLAG PAXTON 10 50133206910000 220064 5/27/2022 Halliburton PPROF + Report PBU C-24B 50029208160200 212063 5/28/2022 Halliburton PPROF + Report PBU C-24B 50029208160200 212063 5/28/2022 Halliburton RBT PBU GNI-03 50029228200000 197189 6/25/2022 Read CALIPER PBU GNI-03 50029228200000 197189 6/25/2022 Read TEMP-PRESS PBU K-01 50029209980000 183121 6/21/2022 Halliburton PPROF + Report PBU M-13A 50029205220100 201165 5/27/2022 Halliburton TMD3D-WFL + Report PBU NGI-05 50029201960000 176014 6/7/2022 Halliburton CAST PBU W-01A 50029218660100 203176 6/8/2022 Halliburton RBT SRU 241-33 50133206630000 217047 6/13/2022 Yellowjacket PERF SRU 241-33B 50133206960000 221053 5/25/2022 Halliburton TEMP-PRESS SRU 32A-33 50133101640100 191014 6/11/2022 AK E-Line PPROF Please include current contact information if different from above. BCU 18RD PTD:222-033 T36747 BCU 24 PTD:214-112 T36748 BCU 7A PTD:214-060 T36749 BRU 232-26 PTD:184-138 T36750 CLU 01RD PTD:203-129 T36751 CLU 09 PTD: 204-161 T36752 CLU1RD PTD:203-129 T36751 END 1-17A PTD:196-199 T36753 END 1-45 PTD:189-124 T36754 END 3-17F PTD:203-216 T36755 Falls Creek 3 PTD:203-102 T36756 HVB B-16 PTD:212-133 T36757 Kalosta 1 PTD:216-132 T36758 KBU 11-7 PTD:205-165 T36759 KBU 33-06X PTD:203-183 T36760 MPU B-28 PTD:216-027 T36761 MPU B-30 PTD:216-153 T36762 MPU E-06 PTD: 191-048 T36763 MPU E-35 PTD:218-152 T36764 MPU L-50 PTD:215-132 T36765 Paxton 10 PTD:220-064 T36766 PBU C-24B PTD:212-063 T36767 PBU GNI-03 PTD:197-189 T36768 PBU K-01 PTD:183-121 T36769 PBU M-13A PTD:201-165 T36770 PBU NGI-05 PTD:176-014 T36771 PBU W-01A PTD:203-176 T36772 SRU 241-33 PTD:217-047 T36773 SRU 241-33B PTD:221-053 T36774 SRU 32A-33 PTD: 191-014 T36775 Kayla Junke Digitally signed by Kayla Junke Date: 2022.07.12 12:56:51 -08'00' 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. (21 .2- Q IU 3 Well History File Identifier Organizing (done) ❑ Two-sided ❑ Rescan Needed RESCAN: OVERSIZED: NOTES: /Col r Items: ❑ Ma s: rayscale Items: ogs: ❑ Poor Quality Originals: ❑ Other: ❑ Other: BY: Maria Date: �5 /s/ vilP Project Proofing C BY: Maria Date: /J /s/ ni P Scanning Preparation ?j x 30 = 70 + = TOTAL PAGES 5 .E - r (Count does not include cover sheet) BY: Date: p2 /V /s/ Production Scanning �j Stage 1 Page Count from Scanned File: "I (Count does include covers t) Pa•e Count Matches Number in Scannin Preparation: YES NO BY: do Date: g41 /s/ vo Stage 1 If NO in stage 1, page(s) discrepancies were found: YES NO BY: Maria Date: /s/ Stage 2 Additional Well Reports: YES NO TOTAL PAGES: Digital version appended by: Meredith Michal Date: /s/ Final Page Count: Stage 1 + Stage 2: TOTAL PAGES: Scanning is complete at this point unless rescanning is required. 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O 6 2 D Mil co ari Z I. m 1�� • o Q I \� o Z cr) 1 mal".6,in coto N N E g- 3 N o c N j rYY ccQm H N 111 Ea U U STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS 1 Operations Abandon IJ Repair Well ❑ Plug Perforations ❑ Perforate❑ Other 0 Pull&ReSet LTP Performed Alter Casing❑ Pull Tubing ❑ Stimulate-Frac ❑ Waiver❑ Time Extension❑ Change Approved Program❑ Operat Shutdown❑ Stimulate-Other ❑ Re-enter Suspended WE 2.Operator 4.Well Class Before Work 5 Permit to Dnll Number BP Exploration(Alaska),Inc Name Development 0 Exploratory 212-063-0 3 Address P.O Box 196612 Stratigraphic ❑ Service 6.API Number Anchorage,AK 99519-6612 50-029-20816-02-00 7.Property Designation(Lease Number) 8 Well Name and Number ADL0028305 PBU C-24B 9 Logs(List logs and submit electronic and pnnted data per 20AAC25 071) 10 Field/Pool(s) PRUDHOE BAY,PRUDHOE OIL 11 Present Well Condition Summary RECEIVED Total Depth measured 12468 feet Plugs measured None feet true vertical 9020 39 feet Junk measured None feet FEB 17 2015 Effective Depth measured 12433 feet Packer measured See Attachment feet /\ GCC true vertical 9019.75 feet true vertical See Attachment feet �'1 Casing Length Size MD TVD Burst Collapse Structural None None None None None None Conductor 80 20"x30" 288-1088 288-1088 0 0 Surface 2689 36 13-3/8"72#L-80 46-2735 36 46-2686 18 4930 2670 Intermediate See Attachment See Attachment See Attachment See Attachment See Attachment See Attachment Production 9135 2 7"26#L-80 27-9162 2 27-7897.5 7240 5410 Liner See Attachment See Attachment See Attachment See Attachment See Attachment See Attachment Perforation depth Measured depth 12200-12400 feet True Vertical depth 9014 41-9019 44 feet Tubing(size,grade,measured and true vertical depth) 4-1/2"12 6#L-80 24 2-9592 24 2-8282 18 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' Intervals treated(measured). Treatment descriptions including volumes used and final pressure 13 Representative Daily Average Production or Injection Data Oil-Bbl Gas-Mcf Water-Bbl Casing Pressure Tubing Pressure Prior to well operation 307 41618 354 580 1006 Subsequent to operation. 407 27847 469 1640 852 14 Attachments 15 Well Class after work. Copies of Logs and Surveys Run Exploratory ❑ Development 0 Service ❑ Stratigraphic ❑ Daily Report of Well Operations X 16 Well Status after work. Oil 0 Gas ❑ WDSPL ❑ GSTOR ❑ WINJ ❑ WAG ❑ GINJ❑ SUSP ❑ SPLUG El 17 I hereby certify that the foregoing is true and correct to the best of my knowledge Sundry Number or N/A if C 0 Exempt N/A Contact Garry Catron Email Garry.CatronaBP.Com Printed Name Garry Catron Title PDC PE Signatureeig/441 -ithPhone 564-4424 Date 2/17/2015 177-4 z/z3/ 13- RBDMS FEB L 3 2015 ,A- X31) Form 10-404 Revised 10/2012 Submit Original Only Packers and SSV's Attachment ADL0028305 SW Name Type MD TVD Depscription C-24B PACKER 9164.08 7899.11 7" Baker ZXP Packer C-24B PACKER 9535.01 8227.64 4-1/2" Baker S-3 Packer C-24B PACKER 9591.81 8282 5" Baker ZXP Top Packer C-24B PACKER 9939 8624.67 4-1/2" Baker KB LT Packer 0 0 0 0 co 0 0 0 O O r O r N- O fNN.. 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G1 CO � � � Jd � 113_, nJ � � Q � _cm Z LLix QW 2 JF- 0 D c0 a Q I- J O JQ J LL * (n Q O N CO W Z Q-O J J I- * Lo co O c �W LL F- H � * O .�� Q� M _ Z �1- 1- Z H O 111 O J * W LL O000 CD >, : aiwocQF- F- � Q 4e m1- J2 _1w � z z O Q � Z Qm > om * � 73 c- 2CD2 (no U - I- * � J w in } mu) U) 0 v7 12-G) NU) = UmconL*n .- CUC NOZU2 � 0_ LLu trCL CL ) CD --1 m Ce CD I-- W02E0Jo C) 0) o � w < O , OpLLo V- C) 2EXJ (nrn0 � Q- Q- ,- CL W >- � � W N n1J N � QUCL' W (nOOc N ` W 2rnOP- ZN NCD LL 2 > g3 J >., vL (n W < a it W Z N 3 (n Z_ J O - 2 m •C � o7, ofQaa � E ,,,-- 2 `SF- O > O � aC� ° Q 2C>' Q0wg E ; H Cl OJ � LLdLu Lud «SZ 2 -0 OLt < Er (I) '''C\I QUZ OCIIY Jo2U- = a) o0 w10) ZZ � m o W mW a � � oj >- I- LI)wO LL- 000- 1M-0 C� 1- N 0mv Dw - CLO �n < U c o Y0U) C° //,�\�CL Ca- W W C) X � LL LL Z I.R. * Z Z ;_, Z L() O N V J W Z Z d - a CL LL _J C 0 _ CL c _ v J '— 00 W LnZO I 5LUaW * OoI- ° m F: c) c) -- om4toti5 � 1= : , F- � XJ om Er) ZO > W Y W W Z UF- Z W W ' W - Q W c' OZ ZY * t� I- J X L j UI- O II O J WU' Ca aJO c OJJ � J � I- J JO OCD NJ J J -8 cL.,) CL O I- WOH2F- J0 3 0JJI- JI- (nJZI- U 0I- 2HHJJ _ * W J < W J W D * * 0 * D D W D WD Q W * * W J W W D D * * O L * (n (nI- w (n (nCL * * -0 * a_ a. cnLL (oZCLCL (n * * (n (n (n (nCLCL * * -o 0.LL u) LO LO Ln U) v- CD O O O O N N N N N O_ .- N- N N N; N N N N r TREE= 4-1/16"CNV 'WELLHEAD= IVcEVOY24 B SAFE ,OTES:WELL ANGLE>70°@ 10372' ACTUATOR= BAKER C NTIAL KB.ELEV= 71.62' BF.ELEV= 37.22' �� • ►� KOP= 1700' 13-3/8"CSG STUB -I 70' ~ 4 Max Angle= 94" 10558' (PILLED 06/12104) �9 C1 1948' -9-5/8"ES CEMENTER Datum MD= 10198' '` Datum TVD 8800 SS 20'CONDUCTOR ? 2185' -14-1/2"HES X h1,D=3.813" .t, .4. .4("4;., .. ,. 2200' HTOP OF CEMENT 13-318"CSG,72#,L-80,D=12.34T -I 2741' 41... ."+1« +"- GAS LFT MANDRELS :ivST MD TVD DEV TYPE VLV LATCH FORT DATE +� 4 3286 3130 37 KBG2 DOME BK 16 01/21/15 r SCAB LM.26#,L-80 BTC-M, - 9152' +' 3 5921 5262 38 KBG2 DOME BK 16 01/21/15 .0383 bpf,D=6.276' y L ':4:' 2 7811 6758 33 KBG2 DMY BK 0 03/25/12 9-5/8'X r TEBACK SLV,D=7.50" H 9162' 1 9238 7963 30 IOW DIN BK 0 03/25/12 9-5/8"X 7"BKR ZXP LTP w/LNR HGR,D-6.276" -I 9164' I ( 9160' H9-5/8"X 7"PBR SEAL ASSY,D=6.192' 9-5/8"CSG PATCH,47#,L-80,D=8.681' -I 9192' 9-5/8'CSG,47#,1-80,D=8.681' - -9310 MLLOUT WINDOW(C-24A)9310'-9326' TOP OF WHPSTOCK --I 9310' ' 9614' -14-1/2"HES X NP,D=3.813" Minimum ID = 2.313" @ 9964' 2-7/8" X NIP INSIDE 4-1/2" KB LTP w/PTSA I z X 9636' -IT'X4-1/2"BKR S-3PKR,D=3.875" ' i 9559' H4-1/2'FES XNP,D=3.813' ' 1._----19680' -{4-1/2'HES XN NP,MLLE°TO 3.805'(06/08/12) 9584' -7"BKR TACK SLV,D=5.25' 4-1/2'TBG,12.6#,L-80 BT-M,.0152 bpf,D=3.958" H 9592' 9592• I-I41/2"wLEG.D=3.958" TOP OF 4-12'LIVER -I 9592 9592 -{7"X 5"BKR ZXP LTP,D=4.40' 9598' -I5' 4.430" 9605' -15"X 41/2"XO,D=3.950" 7'LNR,26#,L-80 BTC-M,.0383 bpf,D=6.276' H 9756' l -- 9939' 14-1/2"BKR KB LTP w/PTSA STINGER, D=2.45"(01/22/15) g $/ 99:6614:-112-7/8' 961 I--13.70"DEPLOY SLV,D=3.00' TOP OF LINER -I 9961' -- -- 9964 Z-7/8'X NP,D=2.3 3"0(01/22/15) 5) 311/2"LNR,9.3#,L-80 STL,.0087 bpf,D=2.972" - I 10014' 1 INTEGRAL TO LTP STINGER 4-1/2'LNR,12.6#,L-80 BT-M,.0152 bpf,D=3.958" ^10174' 't i ► 10014' H3-1/2'X 3-3/16"XO,D=2.786' 41/2"BKRPKR/Vb-PSTOCK(06/13/12) 10175' ; 0, --- MLLOUT W1NDOW(C-24B) 10174'-10182' PERFORATION SUMMARY REF LOG:SIB MCh&09/21/12 1093 H 3-3/16"X 2-7/8"XO, ANGLE AT TOP PERF: 90°@ 12200' D=2.37T Note:Refer to Production DB for historical perf data 11".110ounamil SIZE SR= INTERVAL Opn/Sqz SHOT SQZ 3-1/4"LNR, -I 10933' i• jNjV 2" 6 12200-12400 0 09/22/12 A AI 6.6#,L-80 STL, FBTD 12433' .0079 bpf,D=2.85' 2-7/8'LisR,6.5#,L-80 STL,.0058 bpf,D=2.441" -I 12467' DATE REV BY COMMENTS DATE REV BY COM. NTS F1U)HOE BAY UNIT 09/23/82 N26E INITIAL COMPLETION 01/15/15 LEC!PJC RLL LTP WELL: C-24B 07/04/04 WES SIDETRACK(C-24A) 01/21/15 LEC/PJC GLV GO PERM--No: 2120630 09/23/12 NORDIC1 CTD SIDETRACK(C-24B) 0122/15 LEC PJC SET LTPw/PTSA STINGER&PP AR No: 50-029-20816-02 01/24/13 RCRYJMD DRAWING CORRECTIONS 02/15/15 TBC/PJC PILL BP@ 10203'(01/16/15) SEC 19,T11N,R14E,1425'FNL&1030'FEL 01/05/15 JLS/JMD GLV C70(12/24/14) 01/08/15 DLW/PJC SET BP BP Exploration(Alaska) VA ail BAKER PRINT DISTRIBUTION LIST v o 2013 HUGHES COMPANY BP Exploration(Alaska)Inc. INTERMEDIATE FINAL Yes (mandatory) Z�Z Vl` 3 WELL NAME G 2- k ?% 1 RUN NUMBER 2 (o (mandatory) FIELD Prudhoe Bay BH SALESMAN Okechukwu(Okey) Anyanwu (mandatory) (mandatory) COUNTY North Slope Borough BH DISTRICT Alaska (mandatory) (mandatory) STATE Alaska PAGE OF (mandatory) LOG DATE: TODAYS DATE: 5/31/2013 (mandatory) DISTRIBUTION LIST AUTHORIZED BY: BP Exploration(Alaska)Inc. (mandatory) HAS CLIENT BEEN INVOICED FOR ADDITIONAL PRINTS? COMPANY CD (digital FINAL digital/ ADDRESS(FEDEX WILL NOT DELIVER TO P.O.BOX) LOGS LOGS image) FILM PERSON ATTENTION #OFPRINTS #Ur f'HlN I S #OF COPIES #OF COPIES 11 BP Exploration(Alaska)Inc. 1 3 1 I I Petrotechnical Data Center LR2-1 900 E.Benson Blvd. Anchorage,Alaska 99508 2 iConocePhillips Alaska Inc. I I 1 L_ I Attn Ricky Elgarico PO Box 100360 Anchorage,Alaska 99510 3 ExxonMobil,Alaska 1 1 I Attn Lynda M.Yaskell and/or Leonardo Elias 3700 Centerpointe Dr. Suite 600 Anchorage,Alaska 99503 4State of Alaska-AOGCC I I 1 I 1 I I Christine Shartzer 333 West 7th Ave,Suite 100 Anchorage,Alaska 99501 J 5iDNR-Division of Oil&Gas I I I 1 I I Attn:Sean Clifton 550 W.7th Ave,Suite 800 Anchorage,Alaska 99501 TOTALS FOR THIS PAGE: 0 5 5 0 0 0 TOTALS FOR ALL PAGES: 0 5 5 0 0 0 _ _ 11111 BAKER PRINT DIST UTION ILSE o 6 2013 HUGHES AO r7 cr COMPANY BP Exploration(Alaska)line. INTERMEDIATE FINAL Yes (mandatory) 2-N.Z oG3 WELL NAME G^'Z,A 3 RUN NUMBER (mandatory) 2_26•S FIELD Prudhoe Bay BH SALESMAN Okechukwu(Okey)Anyanwu (mandatory) (mandatory) COUNTY North Slope Borough BH DISTRICT Alaska (mandatory) (mandatory) STATE Alaska PAGE OF (mandatory) LOG DATE: TODAYS DATE: 5/31/2013 (mandatory) DISTRIBUTION LIST AUTHORIZED BY: BP Exploration(Alaska)line. (mandatory) HAS CLIENT BEEN INVOICED FOR ADDITIONAL PRINTS? COMPANY FIELD FINAL (digital/ ADDRESS(FEDEX WILL NOT DELIVER TO P.O.BOX) LOGS LOGS image) FILL PERSONATTENTION #OF PRINTS. #Ut HHIN S Q#OF COPIES #OF COPIES 1 BP Exploration(Alaska)Inc. 1 1 3 1 1 1 I Petrotechnical Data Center LR2-1 900 E.Benson Blvd. Anchorage,Alaska 99508 2 ConocePhillips Alaska Inc. I 1 1 1 l �_ Attn Ricky Elgarico PO Box 100360 Anchorage,Alaska 99510 3 ExxonMobil,Alaska 1 1 Ii 1 1 Attn Lynda M.Yaskell and/or Leonardo Elias 3700 Centerpointe Dr. Suite 600 Anchorage,Alaska 99503 4 State of Alaska-AOGCC I 1 1 1 1 1 I Christine Shartzer 333 West 7th Ave,Suite 100 Anchorage,Alaska 99501 5'DNR-Division of Oil&Gas I 1 1 1 Attn:Sean Clifton 550 W.7th Ave,Suite 800 Anchorage,Alaska 99501 TOTALS FOR THIS PAGE: 0 5 5 0 0 0 TOTALS FOR ALL PAGES: 0 5 5 0 0 0 fCL.,fCIV !U STATE OF ALASKA OCT 2 2012 ALASKA OIL AND GAS CONSERVATION COMMISSION AOGCC WELL COMPLETION OR RECOMPLETION REPORT AND LOG V la. Well Status. ®Oil ❑Gas 0 SPLUG 0 Other 0 Abandoned 0 Suspended 1b Well Class: 20AAC 25 105 20AAC 25 110 •®Development 0 Exploratory 0 GINJ ❑WINJ 0 WAG 0 WDSPL 0 Other No.of Completions One . 0 Service 0 Stratigraphic 2. Operator Name: 5. Date Comp.,Susp.,or Aband.: 12. Permit to Drill Number. BP Exploration (Alaska) Inc. 9/23/2012 • 212-063. 3. Address: 6. Date Spudded: 13. API Number. P.O. Box 196612,Anchorage,Alaska 99519-6612 9/7/2012 • 50-029-20816-02-00' 4a. Location of Well(Governmental Section). 7.Date T.D.Reached: 14. Well Name and Number Surface: 9/18/2012 • PBU C-24B • 1425' FNL, 1030' FEL, Sec. 19,T11N, R14E, UM 8. KB(ft above MSL): 65.72' • 15. Field/Pool(s). Top of Productive Horizon. 4234' FNL,4044' FEL, Sec. 19,T11N, R14E, UM GL(ft above MSL)• 37.22' Prudhoe Bay/Prudhoe Bay • Total Depth: 9.Plug Back Depth(MD+TVD): 5209' FNL,630' FEL, Sec.24,T11N, R13E, UM 12433' 9020' 4b. Location of Well(State Base Plane Coordinates,NAD 27): 10.Total Depth(MD+TVD): 16. Property Designation:, Surface: x- 664351 • y- 5959793 • Zone- ASP4 • 12468' 9020' ' ADL 028305&028285 • TPI: x- 661410 y- 5956920 Zone- ASP4 11.SSSV Depth(MD+TVD): 17. Land Use Permit: Total Depth:x- 659878 Y- 5955913 Zone- ASP4 None 18. Directional Survey: ®Yes 0 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: MWD/GR/RES,GR/CCL/MCNL 10173' 8845' 23. CASING,LINER AND CEMENTING RECORD SETTING DEPTH MD SETTING DEPTH ND HOLE AMOUNT CASING WT.PER FT. GRADE TOP BOTTOM ToP BOTTOM SIZE CEMENTING RECORD PULLED 20"x 30" Insulated Conductor Surface 110' Surface 110' 36" ,8 cu yds Concrete 13-3/8" 72# L-80 70' 2741' 70' 2691' 17-1/2" (3767 cu ft Arcticset II 9/5/8" 47# L-80 Surface 9310' _Surface 8025' 12-1/4" 1453 cu ft Class'G', 1117 cu ft AS I 7" 26# L-80 27' 9756' 27' _ 8443' 8-1/2" 191 cu ft Class'G', 1561 cu ft Class'G' 4-1/2" 12.6# L-80 9584' 10173' 8274' 8845' 6-1/8" 247 cu ft Class'G' , 3-1/2"x3-1/4"x2-7/8" 9 2#/6 6#/6 5# L-80 9954' 12467' 8640' 9020' 4-1/4" 116 sx Class'G' / 24. Open to production or injection? 0 Yes 0 No 25. TUBING RECORD If Yes,list each interval open SIZE DEPTH SET(MD) PACKER SET(MD/ (MD+TVD of Top&Bottom;Perforation Size and Number): ND) 2"Gun Diameter,6 spf 4-1/2", 12.6#, L80 9592' 9535'/8228' MD TVD MD TVD 12200'-12400' 9014'-9019' 26. ACID,FRACTURE,CEMENT SQUEEZE,ETC. DEPTH INTERVAL(MD) AMOUNT AND KIND OF MATERIAL USED �� 2500 Freeze Protect w/38 Bbls Diesel 27. PRODUCTION TEST Date First Production: Method of Operation(Flowing,Gas Lift,etc.): September 30,2012 Flowing Date of Test: Hours Tested: Production For OIL-BBL: GAS-MCF: WATER-BBL: CHOKE SIZE: GAS-OIL RATIO: 10/1/2012 6 Test Period 4 548 6697 0 96 12224 Flow Tubing Casing Press: Calculated OIL-BBL: GAS-MCF: WATER-BBL: OIL GRAVITY-API(CORR): Press 950 1470 24-Hour Rate ♦ 2192 - 26789 • 0 N/A 28. CORE DATA Conventional Core(s)Acquired? 0 Yes 0 No Sidewall Core(s)Acquired? ❑Yes ®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 OCT 15 2012Swi.4 Al 'J Form 10-407 Revised 12/2009 CONTINUED ON REVERSE �� 3 3.13 /�-, Submit Original Only 1 4i 29. GEOLOGIC MARKERS(List all formations ar ' -+arkers encountered): 30. FORMATION TESTS NAME TVD Well Tested j 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. 23SB/Zone 2B 10168' 8841' None 22TS 10246' 8904' 21 TS I Zone 2A 10358' 8969' Formation at Total Depth(Name): 21 TS/Zone 2A 10358' 8969' 31.List of Attachments: Summary of Daily Drilling Reports,Well Schematic Diagram,Surveys 32. I hereby certify that the f. -•• g is tr e=nd o to the best of my knowledge. Signed: Joe Lastufka -Title: Drilling Technologist Date: 10 r J I?/f/� PBU C-24B 212-063 Prepared By Name/Number. Joe Lastufka, 564-4091 Well Number Permit No /Approval No. Dnlring Engineer Ron Phillips, 564-5913 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 ND 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= 4-1/16"CNV WELLHEAD= tB/OY SAFE ./TES:WELLANGLE>70° 10372' ACTUATOR.= BAKER C JMD DRAFT INITIAL KB.REV= 71.62' BE DIV= 3722' 13-3/8"CSG STUB H 70' R.I KOP 1700' Max Angle 94°@ 10558' (PULLED 06112/04) AP 1948' -{9 5/8"ES CEMENTER Datum ND= 10198' 20"CONDUCTOR — ? .: Datum TVD 8800'SS 1 , 2185' —14-1/2"HES X NIP,ID=3.813" 2200' —ITOPOFCEMENT li 13-3/8"CSG,72#,L-80,ID=12.347" — 2741' GAS LIFT MANDRELS ST MD 1VI) DEV TYPE VLV LATCH FORT DATE 4 3286 3130 37 KBG2 DOME BK 16 09/29/12 7"SCAB LNR,26#,L-80 BTC-M, --I 9152' \*y 3 5921 5262 38 KBG2 SO BK 20 09/29/12 _0383 bpf,D=6276" 2 7811 6758 33 KBG2 DMY BK 0 03/25/12 9-5/8'X 7"T1Ef3ACK SLV,ID=7.50" -I 9152' ; F 1 9238 7963 30 KBG2 DMY BK 0 03125/12 9-5/8"X 7"BKR ZXP LIP w/LNR HGR,ID=6.276" -1 9164' I—9160' 1—9-518"X 7"EBR SEAL ASSY,ID=6.192" 9-5/8"CSG PATCH,47#,L-80,D=8.681" H 9192' 9-518"CSG,47#,L-80,ID=8.681" -I --,9 310 MLLOUr VVV4DOW(C-24A)9310'-9326' TOP OF W-IPSTOCK — 9310' 9514' H4-1/2"HES X NP,D=3.813" Minimum ID =2.360" @ -9954' 1 ii 4-112" KB LINER TOP PKR S X 9635' Hr X 4-1/2"BKR S-3 PKR,D=3.875" 1 9559' —14-1/2"HES X143,ID=3.813" 1 1 9580' 1-14-1/2"HES XN NIP,MILLED TO 3.805"(06/08/12) 9584' HI7"BKR TEBACK SLV,ID=5.25" 4-1/2"TBG, 12.6#,L-80 IBT-M,.0152 bpf,ID=3.958" — 9592' 9592' —{4-1/2"WLEG,ID=3.958" TOP OF 4-1/2"LINER —I 9592' f7 ki 9592' H 7"X 5"BKR ZXP LTP,D=4.40" 9598' H7•X 5"LNR HGR,ID=4.430" 7"LNR 26#,L-80 BTC-M,.0383 bpf,D=6.276" H 9756' , , 9605' H 5"X 4-1/2"XO,ID=3.950" X 9954' H4-1/2"BKR KB LTP,ID=2.36"(09/22/12) TOP OF LINER —I 9961' 9961' H 3.70"DEPLOY SLV,ID=3.00" 3-1/2"LNR,9.3#,L-80 STL,_0087 bpf,ID=2.972" — 10114' 10114' —13-1/2'X 3-3/16"XO,ID=2.786" 4-1/2"LNR, 12.6#,L-80 IBT-M,.0152 bpf,D=3.958" 1—I —10174' % 4-1/2"BKR R<R/WHIPSTOCK(06/13/12) 10175' MILLODUT WINDOW(C-24B) 10174'-10182' k PERFORATION SUMMARY / 10933' -I3-3/16"X 2-7/8"XO,ID=2.377" REF LOG:SLB IVEM BORAX ON 02/08/11 ANGLE AT TOP PERF: 90°@ 12200' iiftiA _`_ Note: Refer to A oduction DB for historical pert data ' SIZE SPF INTERVAL Opn/Sqz DATE 3-1/4"LNR,6.6#,L-80 STL, —1 10933' 2" 6 12200-12400 O 09/22/12 .0079 bpf,ID=2.85" PBTD —I 12433' 1— 2-7/8"LNR,6.4#,L-80 STL,.0058 bpf,ID=2.441" — 12467' DATE REV BY COIVNENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 09/23/82 N26E INITIAL COMPLETION 10109/12" PJC DRAWING CORRECTIONS WELL: C-24B 07/04104 N2ES SIDETRACK(C-24A) PERMT No:`2120630 09/23/12 NORDMC1_CTD SIDETRACK(C-24B) AR No: 50-029-20816-02 09/27/12 ?/JA/D DRLG DRAFT CORRECTIONS SEC 19,T11 N,R14E,1425'FNL&1030'FEL 10/02/12 DLW/JM0 GLV CIO(09/29/12) 10/07/12 PJC ADRLG DRAFT CORRECTIONS_ BP Exploration(Alaska) 1I BAKER HUGHES INTEQ North America - ALASKA - BP Prudhoe Bay PB C Pad C-24 / Lat: 070°17'47.296"6 Long: 0148°40'08.689"W C-24BPB1 Survey: MWD Survey Report - Geographic 20 September, 2012 Qbp HIM BAKER bp HUGHES Survey Report Geographic0 INTEQ Company: North America-ALASKA-BP Local Co-ordinate Reference: Well C-24 Project: Prudhoe Bay TVD Reference: C-24A:@ 65.72ft(C-24A:) Site: PB C Pad MD Reference: C-24A:@ 65.72ft(C-24A:) Well: C-24 North Reference: True Wellbore: C-24BPB1 Survey Calculation Method: Minimum Curvature Design: C-24BPB1 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 C Pad,TR-11-14 Site Position: Northing: 5,957,218.72ft Latitude: 70°17'22.367 N From: Map Easting: 662,550.03ft Longitude: 148°41'2.797 W Position Uncertainty: 0.00 ft Slot Radius: 0.000 in Grid Convergence: 1.24 ° Well C-24 API No 500292081600 Well Position +N/-S 0.00 ft Northing: 5,959,793.00 ft Latitude: 70°17'47.296 N +El-W 0.00 ft Easting: 664,351.00 ft Longitude: 148°40'8.689 W Position Uncertainty 0.00 ft Wellhead Elevation: ft Ground Level: 36.20ft Wellbore C-24BPB1 API No 500292081670 Magnetics Model Name Sample Date Declination Dip Angle Field Strength (°) (°) (nT) BGGM2012 9/1/2012 20.83 81.02 57,634 Design C-24BPB1 Audit Notes: Version: Phase: ACTUAL Tie On Depth: 10,162.84 Vertical Section: Depth From(TVD) +N/-S +E/-W Direction (ft) (ft) (ft) (1 32.72 0.00 0.00 226.80 Survey Program Date: 9/11/2012 From To (ft) (ft) Survey(Wellbore) Tool Name Description 94.12 9,294.12 1 :Camera based gyro multisho(C-24) CB-GYRO-MS Camera based gyro multishot 9,310.00 10,162.84 C-24A MWD(C-24A) MWD MWD-Standard 10,173.00 11,600.00 MWD(C-24BPB1) MWD MWD-Standard 9/20/2012 12:00:26PM Page 2 COMPASS 2003.16 Build 73 PI it I I BAKER HUGHES Survey Report-Geographic by INTEQ Company: North America-ALASKA-BP Local Co-ordinate Reference: Well C-24 Project: Prudhoe Bay TVD Reference: C-24A:@ 65.72ft(C-24A:) Site: PB C Pad MD Reference: C-24A:@ 65.72ft(C-24A:) Well: C-24 North Reference: True Wellbore: C-24BPB1 Survey Calculation Method: Minimum Curvature Design: C-24BPB1 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 10,162.84 31.24 8.54 8,836.14 -2,931.71 -2,951.54 5,956,797.65 661,464.48 70° 17' 18.457 N 148°41'34.687 W TIP 10,173.00 32.77 7.66 8,844.75 -2,926.38 -2,950.78 5,956,803.00 661,465.12 70°17'18.509 N 148°41'34.665 W KOP 10,205.33 33.63 357.00 8,871.83 -2,908.75 -2,950.08 5,956,820.64 661,465.43 70° 17'18.683 N 148°41'34.645 W 10,245.27 40.63 340.05 8,903.74 -2,885.39 -2,955.12 5,956,843.88 661,459.89 70°17' 18.912 N 148°41'34.792 W 10,275.26 45.93 328.18 8,925.60 -2,867.02 -2,964.15 5,956,862.05 661,450.45 70° 17'19.093 N 148°41'35.055 W 10,304.27 48.47 317.55 8,945.34 -2,850.12 -2,977.00 5,956,878.66 661,437.24 70° 17' 19.259 N 148°41'35.430 W 10,335.57 51.95 309.40 8,965.39 -2,833.63 -2,994.45 5,956,894.76 661,419.43 70° 17' 19.421 N 148°41'35.938 W 10,374.47 57.43 299.99 8,987.89 -2,815.68 -3,020.54 5,956,912.14 661,392.96 70° 17' 19.598 N 148°41'36.699 W 10,395.23 61.54 296.00 8,998.44 -2,807.30 -3,036.33 5,956,920.17 661,376.99 70° 17' 19.680 N 148°41'37.159 W 10,427.31 67.80 290.01 9,012.16 -2,796.02 -3,063.01 5,956,930.87 661,350.08 70° 17' 19.791 N 148°41'37.936 W 10,455.27 71.61 282.24 9,021.87 -2,788.76 -3,088.18 5,956,937.57 661,324.75 70° 17'19.862 N 148°41'38.670 W 10,485.27 75.87 277.00 9,030.28 -2,783.97 -3,116.56 5,956,941.75 661,296.28 70° 17' 19.909 N 148°41'39.497 W 10,515.61 81.49 271.58 9,036.23 -2,781.76 -3,146.20 5,956,943.31 661,266.60 70° 17'19.931 N 148°41'40.360 W 10,549.44 89.26 268.23 9,038.96 -2,781.82 -3,179.89 5,956,942.51 661,232.92 70° 17'19.930 N 148°41'41.342 W 10,578.42 92.33 261.38 9,038.56 -2,784.44 -3,208.73 5,956,939.26 661,204.15 70° 17' 19.904 N 148°41'42.182 W 10,610.25 96.71 256.93 9,036.05 -2,790.40 -3,239.88 5,956,932.61 661,173.14 70° 17' 19.845 N 148°41'43.090 W 10,641.03 92.52 249.86 9,033.57 -2,799.17 -3,269.25 5,956,923.21 661,143.96 70° 17' 19.759 N 148°41'43.946 W 10,670.79 92.70 242.90 9,032.21 -2,811.07 -3,296.47 5,956,910.71 661,117.01 70° 17'19.642 N 148°41'44.739 W 10,700.11 92.24 236.37 9,030.95 -2,825.87 -3,321.73 5,956,895.37 661,092.08 70° 17' 19.496 N 148°41'45.474 W 10,734.35 91.56 230.06 9,029.81 -2,846.35 -3,349.13 5,956,874.29 661,065.15 70° 17' 19.295 N 148°41'46.272 W 10,762.49 94.12 222.37 9,028.42 -2,865.78 -3,369.40 5,956,854.42 661,045.30 70° 17' 19.103 N 148°41'46.863 W 10,786.59 93.29 217.19 9,026.86 -2,884.26 -3,384.78 5,956,835.62 661,030.33 70° 17'18.922 N 148°41'47.311 W 10,820.16 91.69 212.70 9,025.40 -2,911.74 -3,403.99 5,956,807.72 661,011.73 70° 17' 18.651 N 148°41'47.870 W 10,850.21 88.53 204.36 9,025.34 -2,938.12 -3,418.32 5,956,781.04 660,997.97 70° 17' 18.392 N 148°41'48.287 W 10,879.39 89.45 198.12 9,025.86 -2,965.30 -3,428.89 5,956,753.64 660,988.01 70° 17' 18.125 N 148°41'48.595 W 10,907.44 89.85 191.18 9,026.03 -2,992.42 -3,435.98 5,956,726.37 660,981.51 70° 17' 17.858 N 148°41'48.801 W 10,937.67 90.43 188.46 9,025.95 -3,022.20 -3,441.13 5,956,696.49 660,977.01 70° 17' 17.565 N 148°41'48.951 W 10,966.05 89.51 189.10 9,025.97 -3,050.25 -3,445.47 5,956,668.35 660,973.29 70° 17' 17.289 N 148°41'49.077 W 10,997.80 87.97 190.49 9,026.67 -3,081.53 -3,450.87 5,956,636.97 660,968.58 70° 17' 16.981 N 148°41'49.233 W 11,025.00 92.27 195.21 9,026.61 -3,108.03 -3,456.91 5,956,610.34 660,963.12 70° 17'16.721 N 148°41'49.409 W 11,060.29 89.79 198.76 9,025.97 -3,141.77 -3,467.22 5,956,576.38 660,953.55 70° 17' 16.389 N 148°41'49.709 W 11,091.23 89.85 200.96 9,026.07 -3,170.87 -3,477.73 5,956,547.07 660,943.68 70°17'16.103 N 148°41'50.015 W 11,123.19 89.05 204.82 9,026.38 -3,200.30 -3,490.16 5,956,517.37 660,931.90 70° 17'15.813 N 148°41'50.377 W 11,153.35 91.10 208.10 9,026.34 -3,227.30 -3,503.59 5,956,490.09 660,919.06 70° 17'15.547 N 148°41'50.768 W 11,184.37 89.57 210.71 9,026.16 -3,254.32 -3,518.82 5,956,462.74 660,904.43 70°17'15.282 N 148°41'51.211 W 11,228.39 91.17 216.60 9,025.87 -3,290.94 -3,543.20 5,956,425.60 660,880.85 70°17'14.921 N 148°41'51.921 W 11,258.01 91.32 219.31 9,025.23 -3,314.29 -3,561.41 5,956,401.86 660,863.16 70°17'14.692 N 148°41'52.451 W 11,285.56 88.47 218.78 9,025.28 -3,335.68 -3,578.77 5,956,380.09 660,846.28 70°17'14.481 N 148°41'52.956 W 11,321.47 84.53 218.92 9,027.47 -3,363.59 -3,601.25 5,956,351.70 660,824.41 70°17'14.206 N 148°41'53.611 W 11,350.11 86.19 220.63 9,029.79 -3,385.53 -3,619.51 5,956,329.37 660,806.64 70°17'13.991 N 148°41'54.143 W 11,389.53 89.23 218.53 9,031.36 -3,415.88 -3,644.60 5,956,298.48 660,782.22 70°17'13.692 N 148°41'54.873 W 11,425.21 91.32 220.92 9,031.19 -3,443.32 -3,667.40 5,956,270.55 660,760.02 70°17'13.422 N 148°41'55.537 W 11,455.89 92.91 223.20 9,030.06 -3,466.08 -3,687.94 5,956,247.34 660,739.99 70°17'13.198 N 148°41'56.135 W 11,486.51 94.94 227.12 9,027.96 -3,487.62 -3,709.59 5,956,225.34 660,718.81 70°17'12.986 N 148°41'56.766 W 11,516.35 93.90 232.20 9,025.66 -3,506.87 -3,732.26 5,956,205.60 660,696.57 70°17'12.797 N 148°41'57.426 W 11,548.41 91.26 235.73 9,024.22 -3,525.71 -3,758.15 5,956,186.20 660,671.10 70°17'12.611 N 148°41'58.180 W 11,600.00 91.26 235.73 9,023.08 -3,554.75 -3,800.78 5,956,156.24 660,629.12 70°17'12.326 N 148°41'59.422 W TD 9/20/2012 12:00:26PM Page 3 COMPASS 2003.16 Build 73 r.■ BAKER HUGHES INTEQ North America - ALASKA - BP Prudhoe Bay PB C Pad C-24 / Lat: 070°17'47.296"6 Long: 0148°40'08.689"W C-24B Survey: MWD Survey Report - Geographic 19 September, 2012 Øbp Mi/ 4 BAKER �% p HUGHES Survey Report-Geographic INTEQ Company: North America-ALASKA-BP Local Co-ordinate Reference: Well C-24 Project: Prudhoe Bay TVD Reference: C-24A:@ 65.72ft(C-24A:) Site: PB C Pad MD Reference: C-24A:@ 65.72ft(C-24A:) Well: C-24 North Reference: True Wellbore: C-24B Survey Calculation Method: Minimum Curvature Design: C-24B 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 C Pad,TR-11-14 Site Position: Northing: 5,957,218.72ft Latitude: 70° 17'22.367 N From: Map Easting: 662,550.03ft Longitude: 148°41'2.797 W Position Uncertainty: 0.00 ft Slot Radius: 0.000in Grid Convergence: 1.24 ° Well C-24 API No 500292081600 Well Position +N/-S 0.00 ft Northing: 5,959,793.00 ft Latitude: 70°17'47.296 N +E/-W 0.00 ft Easting: 664,351.00 ft , Longitude: 148°40'8.689 W Position Uncertainty 0.00 ft Wellhead Elevation: ft Ground Level: 36.20ft Wellbore C-24B API No 500292081602 Magnetics Model Name Sample Date Declination Dip Angle Field Strength (°) (°) (nT) BGGM2012 9/1/2012 20.83 81.02 57,634 Design C-24B Audit Notes: Version: 1.0 Phase: ACTUAL Tie On Depth: 10,245.27 Vertical Section: Depth From(TVD) +N/-S +E/-W Direction (ft) (ft) (ft) (°) 32.72 0.00 0.00 230.29 Survey Program Date: 9/19/2012 From To (ft) (ft) Survey(Wellbore) Tool Name Description 94.12 9,294.12 1 :Camera based gyro multisho(C-24) CB-GYRO-MS Camera based gyro multishot 9,310.00 10,162.84 C-24A MWD(C-24A) MWD MWD-Standard 10,173.00 10,245.27 MWD(C-24BPB1) MWD MWD-Standard 10,268.50 12,468.00 MWD(C-24B) MWD MWD-Standard 9/19/2012 1:50:53PM Page 2 COMPASS 2003.16 Build 73 ,p I BAKER a°"9 HUGHES Survey Report-Geographic INTEQ '� 'y Company: North America-ALASKA-BP Local Co-ordinate Reference: Well C-24 Project: Prudhoe Bay TVD Reference: C-24A:@ 65.72ft(C-24A:) Site: PB C Pad MD Reference: C-24A:@ 65.72ft(C-24A:) Well: C-24 North Reference: True Wellbore: C-24B Survey Calculation Method: Minimum Curvature Design: C-24B 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 10,245.27 40.63 340.05 8,903.74 -2,885.39 -2,955.12 5,956,843.88 661,459.89 70° 17'18.912 N 148°41'34.792 W TIP 10,268.50 44.63 330.65 8,920.84 -2,871.15 -2,961.71 5,956,857.97 661,452.99 70°17'19.052 N 148°41'34.984 W KOP 10,305.26 56.37 330.91 8,944.18 -2,846.44 -2,975.53 5,956,882.38 661,438.63 70°17'19.295 N 148°41'35.387 W 10,343.41 64.60 322.70 8,962.98 -2,818.77 -2,993.74 5,956,909.64 661,419.82 70°17'19.567 N 148°41'35.918 W 10,371.86 69.95 314.41 8,973.99 -2,799.15 -3,011.11 5,956,928.87 661,402.02 70° 17'19.760 N 148°41'36.424 W 10,399.37 73.39 305.75 8,982.65 -2,782.37 -3,031.08 5,956,945.21 661,381.69 70°17'19.925 N 148°41'37.006 W 10,436.52 76.81 295.09 8,992.23 -2,764.25 -3,062.00 5,956,962.65 661,350.39 70°17'20.103 N 148°41'37.907 W 10,469.24 79.73 283.88 8,998.90 -2,753.60 -3,092.15 5,956,972.64 661,320.01 70° 17'20.208 N 148°41'38.786 W 10,504.04 79.68 273.99 9,005.14 -2,748.29 -3,125.93 5,956,977.21 661,286.13 70° 17'20.260 N 148°41'39.770 W 10,534.15 81.18 263.86 9,010.15 -2,748.85 -3,155.58 5,956,976.00 661,256.50 70° 17'20.254 N 148°41'40.634 W 10,565.54 80.97 254.52 9,015.03 -2,754.66 -3,186.00 5,956,969.52 661,226.22 70° 17'20.197 N 148°41'41.520 W 10,599.35 85.88 245.10 9,018.91 -2,766.25 -3,217.47 5,956,957.25 661,195.01 70° 17'20.083 N 148°41'42.437 W 10,634.66 88.06 233.77 9,020.79 -2,784.15 -3,247.78 5,956,938.69 661,165.10 70° 17'19.907 N 148°41'43.320 W 10,667.15 90.83 224.57 9,021.10 -2,805.37 -3,272.33 5,956,916.94 661,141.02 70° 17'19.698 N 148°41'44.035 W 10,700.43 90.49 213.99 9,020.72 -2,831.09 -3,293.37 5,956,890.77 661,120.55 70° 17' 19.445 N 148°41'44.648 W 10,730.68 90.18 210.01 9,020.54 -2,856.74 -3,309.40 5,956,864.78 661,105.09 70° 17' 19.193 N 148°41'45.115 W' 10,760.21 89.20 204.79 9,020.70 -2,882.95 -3,322.98 5,956,838.28 661,092.08 70° 17' 18.935 N 148°41'45.510 W, 10,791.47 89.17 200.61 9,021.14 -2,911.77 -3,335.04 5,956,809.20 661,080.65 70° 17' 18.651 N 148°41'45.861 W 10,820.57 89.14 194.15 9,021.57 -2,939.53 -3,343.73 5,956,781.26 661,072.58 70° 17'18.378 N 148°41'46.114 W 10,850.07 90.70 188.94 9,021.61 -2,968.42 -3,349.63 5,956,752.25 661,067.31 70° 17'18.094 N 148°41'46.285 W 10,885.81 88.77 180.11 9,021.78 -3,004.01 -3,352.45 5,956,716.61 661,065.27 70° 17'17.744 N 148°41'46.367 W 10,914.30 88.07 175.96 9,022.57 -3,032.47 -3,351.47 5,956,688.18 661,066.87 70°17'17.464 N 148°41'46.338 W 10,945.17 93.13 178.03 9,022.24 -3,063.28 -3,349.85 5,956,657.41 661,069.16 70°17'17.161 N 148°41'46.291 W 10,980.09 91.84 180.40 9,020.73 -3,098.16 -3,349.38 5,956,622.55 661,070.40 70°17'16.818 N 148°41'46.276 W 11,010.08 88.87 184.52 9,020.54 -3,128.11 -3,350.66 5,956,592.58 661,069.77 70°17'16.524 N 148°41'46.313 W 11,040.10 88.96 189.18 9,021.11 -3,157.91 -3,354.24 5,956,562.72 661,066.84 70°17'16.231 N 148°41'46.417 W 11,069.94 89.14 193.53 9,021.61 -3,187.15 -3,360.12 5,956,533.36 661,061.61 70°17'15.943 N 148°41'46.588 W 11,101.93 87.03 198.37 9,022.68 -3,217.88 -3,368.90 5,956,502.44 661,053.50 70°17'15.641 N 148°41'46.843 W 11,128.92 90.31 201.88 9,023.30 -3,243.21 -3,378.18 5,956,476.92 661,044.78 70°17'15.391 N 148°41'47.114 W 11,159.73 91.23 207.73 9,022.89 -3,271.16 -3,391.10 5,956,448.70 661,032.48 70° 17'15.117 N 148°41'47.490 W 11,190.93 90.28 211.17 9,022.48 -3,298.32 -3,406.43 5,956,421.21 661,017.74 70° 17'14.849 N 148°41'47.936 W 11,235.65 88.28 217.12 9,023.04 -3,335.31 -3,431.52 5,956,383.68 660,993.47 70° 17'14.485 N 148°41'48.666 W 11,268.41 87.48 226.75 9,024.25 -3,359.64 -3,453.37 5,956,358.88 660,972.16 70° 17'14.246 N 148°41'49.303 W 11,300.35 88.74 234.42 9,025.31 -3,379.89 -3,478.02 5,956,338.10 660,947.96 70°17'14.047 N 148°41'50.020 W 11,330.65 91.41 240.50 9,025.27 -3,396.18 -3,503.54 5,956,321.26 660,922.80 70° 17'13.886 N 148°41'50.764 W 11,357.02 89.48 245.65 9,025.06 -3,408.12 -3,527.05 5,956,308.81 660,899.56 70° 17'13.769 N 148°41'51.449 W 11,389.52 90.28 245.71 9,025.13 -3,421.50 -3,556.66 5,956,294.78 660,870.25 70° 17'13.637 N 148°41'52.311 W 11,418.07 89.82 238.36 9,025.11 -3,434.88 -3,581.86 5,956,280.86 660,845.35 70° 17' 13.505 N 148°41'53.045 W 11,457.95 92.24 232.50 9,024.39 -3,457.49 -3,614.68 5,956,257.53 660,813.04 70° 17' 13.283 N 148°41'54.001 W 11,494.31 90.43 227.34 9,023.54 -3,480.89 -3,642.48 5,956,233.54 660,785.76 70° 17' 13.053 N 148°41'54.811 W 11,528.27 91.07 232.99 9,023.10 -3,502.63 -3,668.55 5,956,211.23 660,760.18 70° 17' 12.839 N 148°41'55.570 W 11,557.75 93.69 237.69 9,021.87 -3,519.38 -3,692.76 5,956,193.96 660,736.33 70° 17' 12.674 N 148°41'56.275 W 11,584.58 92.12 242.79 9,020.51 -3,532.67 -3,716.02 5,956,180.16 660,713.38 70° 17'12.543 N 148°41'56.952 W 11,622.95 90.77 253.04 9,019.54 -3,547.07 -3,751.51 5,956,164.99 660,678.21 70° 17'12.401 N 148°41'57.986 W 11,650.16 90.15 257.39 9,019.32 -3,554.02 -3,777.81 5,956,157.47 660,652.06 70°17'12.333 N 148°41'58.753 W 11,680.63 89.51 258.76 9,019.41 -3,560.31 -3,807.63 5,956,150.53 660,622.40 70°17'12.271 N 148°41'59.621 W 11,709.73 89.82 254.42 9,019.58 -3,567.06 -3,835.92 5,956,143.16 660,594.26 70°17'12.204 N 148°42'0.445 W 11,740.87 88.96 247.26 9,019.92 -3,577.27 -3,865.32 5,956,132.31 660,565.09 70°17'12.104 N 148°42'1.302 W 11,770.23 90.40 242.66 9,020.08 -3,589.69 -3,891.91 5,956,119.31 660,538.78 70°17'11.981 N 148°42'2.076 W 11,803.73 89.79 239.35 9,020.02 -3,605.93 -3,921.21 5,956,102.44 660,509.85 70°17'11.822 N 148°42'2.929 W 11,829.47 89.02 243.03 9,020.29 -3,618.33 -3,943.76 5,956,089.55 660,487.58 70°17'11.699 N 148°42'3.586 W 11,857.84 90.71 247.36 9,020.36 -3,630.23 -3,969.50 5,956,077.09 660,462.10 70°17'11.582 N 148°42'4.336 W 11,890.73 90.92 253.33 9,019.89 -3,641.29 -4,000.46 5,956,065.36 660,431.40 70°17'11.473 N 148°42'5.238 W 9/19/2012 1:50:53PM Page 3 COMPASS 2003.16 Build 73 't9p0 HUGHES Survey Report-Geographic I, '-'E? INTEQ Company: North America-ALASKA-BP Local Co-ordinate Reference: Well C-24 Project: Prudhoe Bay TVD Reference: C-24A:@ 65.72ft(C-24A:) Site: PB C Pad MD Reference: C-24A:@ 65.72ft(C-24A:) Well: C-24 North Reference: True Wellbore: C-24B Survey Calculation Method: Minimum Curvature Design: C-24B 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 11,923.96 92.52 259.69 9,018.89 -3,649.03 -4,032.74 5,956,056.91 660,399.30 70° 17'11.397 N 148°42'6.178 W 11,952.08 91.35 263.98 9,017.94 -3,653.02 -4,060.55 5,956,052.32 660,371.58 70° 17'11.358 N 148°42'6.988 W 11,980.53 91.56 268.09 9,017.22 -3,654.99 -4,088.92 5,956,049.73 660,343.26 70° 17'11.338 N 148°42'7.815 W 12,010.75 91.23 264.62 9,016.48 -3,656.91 -4,119.06 5,956,047.15 660,313.17 70° 17'11.319 N 148°42'8.693 W 12,040.82 89.11 260.31 9,016.39 -3,660.85 -4,148.86 5,956,042.56 660,283.46 70° 17'11.280 N 148°42'9.561 W 12,070.81 91.35 256.41 9,016.27 -3,666.90 -4,178.23 5,956,035.87 660,254.24 70° 17'11.221 N 148°42'10.417 W 12,105.17 91.50 252.12 9,015.42 -3,676.21 -4,211.28 5,956,025.84 660,221.40 70° 17'11.129 N 148°42'11.379 W 12,132.23 90.06 248.02 9,015.05 -3,685.43 -4,236.72 5,956,016.06 660,196.18 70° 17'11.038 N 148°42'12.120 W 12,163.99 90.77 245.76 9,014.82 -3,697.90 -4,265.92 5,956,002.96 660,167.25 70° 17'10.915 N 148°42'12.971 W 12,190.78 90.67 241.06 9,014.48 -3,709.89 -4,289.87 5,955,990.46 660,143.57 70°17'10.797 N 148°42'13.668 W 12,220.86 89.23 245.35 9,014.51 -3,723.44 -4,316.72 5,955,976.32 660,117.03 70° 17'10.664 N 148°42'14.450 W 12,250.85 88.74 250.03 9,015.04 -3,734.82 -4,344.45 5,955,964.33 660,089.56 70° 17'10.552 N 148°42'15.258 W 12,284.21 87.20 255.91 9,016.22 -3,744.58 -4,376.31 5,955,953.88 660,057.92 70° 17'10.455 N 148°42'16.186 W 12,321.85 88.07 260.00 9,017.78 -3,752.43 -4,413.08 5,955,945.23 660,021.33 70° 17' 10.378 N 148°42'17.257 W 12,350.77 88.44 264.11 9,018.66 -3,756.42 -4,441.70 5,955,940.61 659,992.80 70° 17' 10.339 N 148°42'18.091 W 12,380.55 89.23 261.69 9,019.27 -3,760.10 -4,471.25 5,955,936.29 659,963.35 70° 17' 10.302 N 148°42'18.952 W 12,410.79 89.97 256.65 9,019.48 -3,765.78 -4,500.94 5,955,929.96 659,933.79 70° 17' 10.246 N 148°42'19.816 W 12,424.93 88.96 251.47 9,019.61 -3,769.66 -4,514.53 5,955,925.78 659,920.29 70° 17' 10.208 N 148°42'20.212 W 12,468.00 • 88.96 251.47 9,020.39 -3,783.35 -4,555.36 5,955,911.21 659,879.77 70° 17' 10.073 N 148°42'21.402 W TD-2 7/8" 9/19/2012 1:50:53PM Page 4 COMPASS 2003.16 Build 73 North America-ALASKA- BP Page 1 of 35 Operation Summary Report Common Well Name:C-24 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 9/3/2012 End Date:9/19/2012 X3-0124Y-C: (2,217,200.00) Project:Prudhoe Bay Site: PB C Pad Rig Name/No.:NORDIC 1 Spud Date/Time:9/5/1982 12:00:00AM Rig Release: Rig Contractor: NORDIC CALISTA UWI:/Lat.070°1T47.296"6 Long: 0148°40'08.689"W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 9/3/2012 16:00 - 18:30 2.50 MOB P PRE PREP TO MOVE RIG OVER C-24. WSL HAS TO GOTO WELLS GROUP TO CONDUCT FACE-TO-FACE TO OBTAIN WELL HANDOVER FORMS. 24-HR NOTICE OF INITIAL BOPE TEST GIVEN TO AOGCC AT 0830-HRS ON 9/2/12. TIMING --UPDATES HAVE BEEN PROVIDED EVERY 12-HRS TO AOGCC REP BOB NOBLE. 18:30 - 19:15 0.75 MOB P PRE 'NIGHT WSL ON LOCATION. VERIFY PRESSURES ON OA, IA,TUBING TO BE 0 PSI. CLOSE BACK IN. HANDOVER ON LOCATION AT 1900 HRS. CONDUCT WSL HANDOVER AND CHANGEOUT 19:15 - 19:45 0.50 MOB P PRE PJSM ON MOVING RIG. DISCUSS POSITIONS, "STOP". FUNCTION TEST ESD,ALL GOOD. POSITION PERSONNEL. 19:45 - 20:00 0.25 MOB P PRE MOVE RIG OVER C-24. RIG ACCEPT AT 2000 HRS. 20:00 - 23:00 3.00 MOB P PRE STAGE WELDING SHACK,SATELLITE CAMP, CUTTINGS BOX,TIGER TANK AND HARDLINE. PT HARDLINE. CONDUCT INSPECTION OF C-03,OBTAIN CLEARANCE FROM PAD OPERATOR AND SIGN OFF ON PERMIT FOR THAT WELL. CONDUCT LEAK TIGHT TEST TO VERIFY BARRIERS WITH 2 VALVES PER CRITERIA IN WELL PLAN TO REMOVE TREE CAP. 23:00 - 23:15 0.25 MOB P PRE PJSM ON REMOVING TREE CAP AND NU BOP. DISCUSS WORK AT HEIGHTS,NU PROCEDURE,DROPPED OBJECT PREVENTION,USE OF HAMMER WRENCH AND PERMITTING. 23:15 - 00:00 0.75 MOB P 4 PRE REMOVE TREE CAP. MOBILIZE BOP OVER TREE. 9/4/2012 00:00 - 00:45 0.75 MOB P PRE MOBILIZE BOP OVER TREE. LINE UP FLANGE BOLTS. SET DOWN. 00:45 - 01:15 0.50 MOB P PRE CONDUCT RIG EVACUATION DRILL. GOOD CREW RESPONSE TIME OF LESS THAN 2 MINUTES IN PRIMARY MUSTER AREA. AAR ON EVAC. NO NOTED IMPROVEMENTS. DISCUSS WELL EXECUTION OF C-24B. REVIEW HIGH GOR RP. 01:15 - 03:15 2.00 BOPSUR P PRE NU BOP. MOBILIZE REEL TRAILER NEXT TO RIG IN PREPARATION FOR LIFT. 03:15 - 03:30 0.25 MOB P PRE PJSM ON LIFTING REEL ON TO RIG WITH CH2MHILL,SLB, NORDIC CREWS,SITE CONTROL,AND WSL. DISCUSS POSITIONS, LIFTING DANGERS. 03:30 - 05:30 2.00 MOB P PRE LIFT REEL MULTIPLE TIMES IN ATTEMPT TO CALIBRATE NEWLY INSTALLED LOAD CELL METER IN REEL HOUSE. CANNOT GET IT CALIBRATED. LIFT REEL INTO PLACE AND SECURE WITH REEL DRIVE PINS. LOCK INTO PLACE WITH SECONDARY LOCKS. 05:30 - 06:00 0.50 MOB P PRE PREPARE REEL FOR OPERATIONS. RU WINCH WITH GRAPPLE TO PULL COIL ACROSS. Printed 10/1/2012 10:52:41AM North America-ALASKA- BP Page 2 of 35 Operation Summary Report Common Well Name:C-24 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 9/3/2012 End Date:9/19/2012 X3-0124Y-C: (2,217,200.00) Project:Prudhoe Bay Site: PB C Pad Rig Name/No.: NORDIC 1 Spud Date/Time:9/5/1982 12:00:00AM Rig Release: Rig Contractor:NORDIC CALISTA UWI:/Lat:070°17'47.296"6 Long: 0148°40'08.689"W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 06:00 - 06:30 0.50 MOB P PRE PERFORM CREW CHANGE AND MAKE WALKAROUNDS. 06:30 - 09:30 3.00 MOB P PRE HOLD PJSM ON PULLING COIL ACROSS ROOF&STABBING IN INJECTOR. REVIEW ORDER OF OPERATIONS,POSITIONS OF PEOPLE,STORED ENERGY POTENTIALS WITH COIL, DROPPED OBJECTS POTENTIALS AND THE IMPORTANCE OF COMMUNICATION. INSTALL GRAPPLE IN COIL. PULL TEST SAME-GOOD. REMOVE CLAMP&SHIPPING BAR. PULL COIL ACROSS ROOF&STAB INTO 1 INJECTOR. SECURE COIL. CHANGE OUT STUFFING BOX BRASS AND PACKOFF. 09:30 - 10:00 0.50 BOPSUR P PRE RU FOR BOP TEST. FLUID PACK MGS& CHOKE MANIFOLD. CTS BEGINS INSTALLING INNER REEL IRON& PRESSURE BULKHEAD. TEST H2S&LEL ALARMS-GOOD TEST. 10:00 - 11:00 1.00 BOPSUR P PRE PERFORM BOPE BODY TEST TO 250-PSI. UNABLE TO GET PASSING LOW PRESSURE TEST. TROUBLESHOOT AND IDENTIFY THAT VALVE #9 AND VALVE#14 ARE LEAKING. 11:00 - 12:00 1.00 BOPSUR P PRE REGREASE VALVE#9&#14. IA/OA=15-PSI/10-PSI. 12:00 - 18:00 6.00 BOPSUR P PRE BEGIN INITIAL BOPE TEST. ALL TESTS TO 250-PSI/3500-PSI FOR 5-CHARTED,FLAT-LINE MINUTES PER TEST. TESTS WITNESSED BY BP WSL,NORDIC TOOLPUSHER&AOGCC REP BOB NOBLE. BOPE WAS FUNCTIONED FROM RIG FLOOR& OPS CAB REMOTE PANELS AND FROM THE ACCUMULATOR. WHILE TESTING,FILL PITS WITH NEW 8.4-PPG POWERPRO MUD. 18:00 - 20:30 2.50 BOPSUR P PRE HOLD PJSM.MAKE UP COIL TUBING CONNECTOR AND PULL TEST TO 35K-PASS. MAKE UP NOZZLE,CHANGE OUT HIGH PRESSURE SCREENS AND STAB INJECTOR. REVERSE CIRCULATE COIL WITH KCL WATER.PRESSURE TEST SLB LINES AND CONNECTIONS IN REEL HOUSE TO 250 PSI LOW,4000 PSI HIGH FOR 5 CHARTED MINUTES EACH-PASS. 20:30 - 21:00 0.50 BOPSUR P PRE TEST INNER REEL VALVE AND PACKOFFS TO 250 PSI LOW,3500 PSI HIGH FOR 5 CHARTED MINUTES EACH-PASS. 21:00 - 00:00 3.00 BOPSUR P PRE PJSM.TEST MANUAL LOCKS ON LOWER 2-3/8"COMBIS,LOWER 2-3/8"X 3-1/2" VARIABLES,UPPER 2-3/8"COMBIS AND BLIND SHEAR RAMS TO 250 PSI LOW,3500 PSI HIGH FOR 5 CHARTED MINUTES EACH- PASS.TESTS WITNESSED BY BP WSL, NORDIC TOOLPUSHER. Printed 10/1/2012 10:52:41AM • North America -ALASKA- BP • Page 3 of 35 Operation Summary Report Common Well Name:C-24 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 9/3/2012 End Date: 9/19/2012 X3-0124Y-C: (2,217,200 00) Project: Prudhoe Bay Site:PB C Pad Rig Name/No. NORDIC 1 Spud Date/Time:9/5/1982 12:00:00AM Rig Release: Rig Contractor: NORDIC CALISTA UWI:/Lat:070°17'47.296"6 Long: 0148°40'08.689'W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 9/5/2012 00:00 - 00:30 0.50 BOPSUR P PRE TEST MANUAL LOCKS ON LOWER 2-3/8" COMBIS,LOWER 2-3/8"X 3-1/2"VARIABLES, • UPPER 2-3/8"COMBIES AND BLIND SHEAR RAMS TO 250 PSI LOW,3500 PSI HIGH FOR 5 CHARTED MINUTES EACH-PASS.TESTS oe WITNESSED BY BP WSL,NORDIC TOOLPUSHER. -(11 00:30 - 01:00 0.50 STWHIP P WEXIT PJSM. INSPECT INJECTOR CHAIN. NO PROBLEMS FOUND. 01:00 - 01:30 0.50 STWHIP P WEXIT PJSM.TEST NIGHT CAP TO 250 PSI LOW, 3500 PSI HIGH FOR 5 MINUTES EACH-PASS. 01:30 - 02:00 0.50 STWHIP P WEXIT PERFORM FLOW CHECK,(STATIC), FOR 30 MINUTES WHILE CHANGING OUT SLINGS AND SHACKLES FOR INJECTOR LIFTING SYSTEM. 02:00 - 03:00 1.00 STWHIP P WEXIT CHANGE OUT SLINGS AND SHACKLES FOR INJECTOR LIFTING SYSTEM. 03:00 - 06:15 3.25 STWHIP P WEXIT CUT 10'OF COIL,TEST CONTINUITY.HEAD UP AND PULL TEST TO 35K.MAKE UP COIL CONNECTOR AND TEST E-LINE CONNECTIONS. LEAK IN CROSSOVER FROM CTC TO UQC. FILL WELL WITH MINIMAL AMOUNT OF KCL& MONITOR-STATIC. 06:15 - 06:45 0.g0 STWHIP N SFAL WEXIT ATTEMPT TO BEGIN REHEAD OF BHI,NOT ENOUGH SLACK TO BREAK CONNECTION. SET INJECTOR OVER CIRC HOLE AND PUMP FORWARD WITH 15-BBLS KCL,SURGING PUMPS. IA/OA/PVT=17-PSI/12-PSI/298-BBLS. 06:45 - 07:15 0.50 STWHIP - N SFAL WEXIT PU INJECTOR. BREAK OUT BHI UQC. REMOVE CROSSOVER. CLEAN, REDOPE& REMAKE CONNECTION. TEST CONNECTIONS TO 3850-PSI. GOOD TEST. 07:15 - 09:00 1.75 STWHIP P WEXIT REHEAD BHI. TEST DFCV TO 250-PSI/ 3500-PSI. HOLD AND CHART EACH TEST FOR 5-MINUTES. GOOD TESTS. 09:00 - 09:30 0.50 STWHIP P WEXIT RIG H2S EVAC DRILL&AAR. ALL PERSONNEL ON LOCATION MUSTER QUICKLY AT PRIMARY MUSTER AREA. AAR HIGHLIGHTS THAT ALARMS WERE CLEARLY HEARD BY ALL PERSONNEL ON LOCATION AND THAT LEVEL 1 RESPONSE WAS CLEARLY UNDERSTOOD. SUFFICIENT SCBAS(4-TOTAL)NEEDED FOR RE-ENTRY IN THE EVENT OF AN H2S RELEASE WERE UNAVAILABLE AT PRIMARY MUSTER AREA. PRE-SPUD MEETING WITH RIG CREW. 09:30 - 10:00 0.50 STWHIP P WEXIT HOLD PJSM ON MU WINDOW MILLING BHA., INSUFFICIENT KCL ON LOCATION FOR INITIAL WELL ENTRY. 10:00 - 11:00 1.00 STWHIP N SFAL WEXIT WAIT FOR FULL TRUCK OF KCL TO ARRIVE ON LOCATION. 11:00 - 11:30 0.50 STWHIP P WEXIT MU WINDOW MILLING BHA. BHA CONSISTS OF-3.8"WINDOW MILL,3.8" STRING REAMER,2-7/8"XTREME MOTOR,XO. 2-JTS OF 2-3/8"PH6,XO,XO, BLIND SUB. DGS, DPS, EDC, P&C,WEAR SUB, LQC, UQC, XO, CTC. OAL= 120.11'. Printed 10/1/2012 10:52:41AM ' • .'or=North America -ALASKA- BP • Page 4 of 35 Operation Summary Report Common Well Name:C-24 AFE No Event Type:RE-ENTER-ONSHORE(RON) Start Date:9/3/2012 End Date: 9/19/2012 X3-0124Y-C: (2,217,200.00) Project:Prudhoe Bay Site: PB C Pad Rig Name/No.: NORDIC 1 Spud Date/Time:9/5/1982 12:00:OOAM Rig Release: Rig Contractor:NORDIC CALISTA UWI:/Lat:070017'47.296"6 Long: 0148°40'08.689'W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 11:30 - 12:00 0.50 STWHIP P WEXIT STAB ON INJECTOR. TEST QTS TO 250-PSI/3500-PSI. HOLD EACH TEST FOR 5-MINUTES. GOOD TESTS. LINE UP ON RIG WATER TO USE IN SHIFTING E-LINE SLACK TO DOWNHOLE END OF COIL. OPEN EDC. IA/OA/TT STRAP=20-PSI/11-PSI/10-BBLS. 12:00 - 12:45 0.75 STWHIP P WEXIT RIH SLOWLY PUMPING 60-BBLS FRESH WATER AT 2.4-BPM/1780-PSI TO SHIFT E-LINE SLACK TOWARDS DOWNHOLE END OF COIL. TAKE ALL RETURNS TO TIGER TANK. 12:45 - 15:30 2.75 STWHIP P WEXIT CONTINUE TO RIH PUMPING 8.4-PPG 1%KCL AT.4-BPM/150-PSI. TAKE ALL RETURNS TO TIGER TANK, STRAPPING EVERY 1/2-HR&HOLDING 100-PSI BACK PRESSURE. INITIALLY 7.2-PPG DIESEL FREEZE PROTECTION. WITH 60-BBLS PUMPED (REPORTED AMOUNT OF DIESEL PUMPED PRE-RIG), SEE RETURN DENSITY INCREASE (ON OUT MM)TO 8.3-PPG SEAWATER TAG WS AT 10,178'UNCORRECTED WITH 5K-LBS DHWOB. 15:30 - 17:00 1.50 STWHIP P WEXIT PU TO 10,165' INCREASE CIRC RATE TO 2.6-BPM/2100-PSI. CBU X2 WITH KCL. TAKE ALL RETURNS TO CUTTINGS BOX. MOVE UPHOLE SLOWLY WHILE CIRCULATING. IA/OA=30-PSI/0-PSI. 17:00 - 17:15 0.25 STWHIP P WEXIT FLOW CHECK WELL-NO FLOW. 17:15 - 17:30 0.25 STWHIP P WEXIT ESTABLISH CIRCULATION AT 1.5-BPM WITH MUD GOING DOWN COIL,DISPLACING WELL WITH KCL RETURNS TO TIGER TANK. POH TO 9800'. 17:30 - 19:00 1.50 STWHIP P WEXIT LOG PRIMARY TIE-IN PER GEO AND APPLY A MINUS 1'CORRECTION.CONTINUE DISPLACING WELL TO NEW 8.4-PPG MUD. OBSERVE CLEAN MUD TO SURFACE AND SHUT DOWN. 19:00 - 19:30 0.50 STWHIP P WEXIT CLOSE EDC AND DRY TAG TOP OF WHIPSTOCK WINDOW AT 10,174'MD.OBTAIN PARAMETERS.UP WEIGHT 33K,DOWN P WEIGHT 13K.TAKE SLOW PUMP RATES. PUMP#1 AT 0.5 BPM WITH 1387 PSI. 1.0 BPM WITH 1616 PSI. PUMP#2 AT 0.5 BPM WITH 1388 PSI. 1.0 BPM WITH 1633 PSI. 19:30 - 00:00 4.50 STWHIP P WEXIT MILL AT TOP OF WINDOW OF 10,174'MD. PUMP AT 2.6 BPM WITH 2622 PSI.MUD WEIGHT IN AND OUT 8.5 PPG.DOWN WEIGHT ` 14K WITH WOB 0.5K.TIME DRILL FIRST FOOT _-1 AT 1 FOOT PER HOUR.AT 11175'MD INCREASED WOB TO 1K WITH MOTOR WORK AT 150 PSI.PIT VOLUME AT 320 BBLS.OA=5 /I(1 PSI,IA=50 PSI.CONTINUE TO MILL AHEAD TO 10,177'MD PUMPING AT 2.6 BPM WITH 2930 PSI.DOWN WEIGHT 11K WITH 3.5K WOB.OA=6 PSI,IA=52 PSI. Printed 10/1/2012 10:52:41AM r�`` ' North America -ALASKA- BP 4111 Page 5 of 35 O'eretion Summary Report Common Well Name:C-24 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 9/3/2012 End Date. 9/19/2012 1X3-0124Y-C: (2,217,200 00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.: NORDIC 1 Spud Date/Time. 9/5/1982 12:00:OOAM Rig Release: Rig Contractor: NORDIC CALISTA UWI:/Lat:070°17'47.296"6 Long 0148°40'08.689"W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 9/6/2012 00:00 - 03:00 3.00 STWHIP P WEXIT MILL AHEAD TO 10,179'MD.PUMP AT 2.6 BPM WITH 2842 PSI. DOWN WEIGHT 12K WITH 2.8K WOB.MUD WEIGHT IN AND OUT 8.5 PPG. PIT VOLUME 321 BBLS. OA= 10 PSI, IA= 59 PSI. LOST 1K WOB OVER LAST 30 MINUTES OF MILLING AND FIRST STALL AT 10,178.8'MD. PULL OFF BOTTOM AND EASE BACK DOWN AT 0.5 FPM TO CONTINUE MILLING. 03:00 - 06:00 3.00 STWHIP P WEXIT STALLED OUT TRYING TO GET BACK TO BOTTOM FOR MILLING. PULLED BACK OFF BOTTOM AND EASED INTO BOTTOM.MILLING WINDOW AT 10,180'MD. PUMPING AT 2.6 BPM WITH 2755 PSI AND 100 PSI MOTOR WORK. DOWN WEIGHT 13K WITH 1 7K WOB. MUD WEIGHT IN AND OUT 8.5 PPG. PIT VOLUME 322 BBLS.OA=11 PSI, IA=62 PSI. 06:00 - 10:30 4.50 STWHIP P WEXIT CONTINUE TO MILL WINDOW,KEEPING 2K-LBS DHWOB AND MAINTAINING 200- 250-PSI MOTOR WORK. PUMP AT 2.55-BPM WITH 2650-PSI FREE SPIN. PROBABLE EXIT AT 10,182.8'WITH INCREASE IN DHWOB TO 2.7-KLBS&THEN QUICKLY DRILL OFF. CONTINUE TIME MILLING AHEAD AT 1-FPH. IA/OA/PVT=65-PSI/11-PSI/323-BBLS. MW IN=8.51-PPG/MW OUT=8.49-PPG. ECD= 9.82-PPG. 10:30 - 13:45 3.25 STWHIP P WEXIT MILL AHEAD IN FORMATION FROM 10,185'TO 10,192.3' CATCH BU SAMPLE FOR GEO FROM 10,184'- SAMPLE MAINLY FORMATION,SHOWING HIGH CHERT PERCENTAGE. MILLING AT 2.55-BPM,1.5-3K-LBS DHWOB AND 200-350-PSI MOTOR WORK. ROP VERY SLOW. DISCUSS SITUATION WITH DD&ODE& DECIDE TO STOP MILLING RATHOLE AT 10,192.3' IA/OA/PVT=70-PSI/13-PSI/322-BBLS. MW IN/OUT=8.51-PPG/8.48-PPG. ECD= 9.83-PPG. 13:45 - 14:30 0.75 STWHIP P WEXIT MAKE REAMING PASSES UP&DOWN THROUGH WINDOW-NO ISSUES. CIRCULATE AT 2.58-BPM/2840-PSI. DRY DRIFT WINDOW-NO ISSUES. IA/OA/PVT=70-PSI/16-PSI/321-BBLS. 14:30 - 14:45 0.25 STWHIP P WEXIT FLOW CHECK WELL FROM 10,170'-NO FLOW. OPEN EDC&ESTABLISH CIRCULATION AT 3.5-BPM I 2970-PSI. PVT=320-BBLS. 14:45 - 16:30 1.75 STWHIP P WEXIT POH WITH WINDOW MILLING BHA.MUD WEIGHT IN AND OUT 8.5 PPG. 16:30 - 17:00 0.50 STWHIP P WEXIT FLOW CHECK WELL AT 200'.NO FLOW. CLOSE EDC. IA/OA/PVT=60-PSI/20-PSI/272-BBLS. Printed 10/1/2012 10:52.41AM North America-ALASKA- BP • �� Page 6 of 35 Operation Summary Report Common Well Name:C-24 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 9/3/2012 End Date: 9/19/2012 X3-0124Y-C: (2,217,200.00) Project:Prudhoe Bay Site: PB C Pad Rig Name/No.:NORDIC 1 Spud Date/Time:9/5/1982 12:00:00AM Rig Release: Rig Contractor:NORDIC CALISTA UWI:/Lat:070°17'47.296"6 Long: 0148°40'08.689'W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 17:00 - 17:45 0.75 STWHIP P WEXIT HOLD PJSM ON LD WINDOW MILLING BHA. DISCUSS POSITIONS OF PEOPLE,BHA HANDLING,SAFETY JOINT USAGE AND ORDER OF OPERATIONS. UNSTAB INJECTOR AND SET BACK OVER CIRC HOLE. BLOW DOWN TOOL STRING. LD WINDOW MILLING BHA. GAUGE BOTH MILLS WITH 3.80"GO/3.79"NO GO. 17:45 - 18:00 0.25 STWHIP P WEXIT CLEAN&CLEAR RIG FLOOR. CHECK TORQUE ON TREE BOLTS. FOUND 6 BOLTS OUT OF SPEC. PREP TO REPOSITION TONG HANGING LINE IN DERRICK. 18:00 19:00 1.00 STWHIP P WEXIT PJSM.HANG FARR TONG HANGING LINE IN DERRICK. 19:00 - 22:00 3.00 WHSUR N SFAL WHDTRE WAIT ON VALVE CREW TO REACH LOCATION. PJSM WITH VALVE CREW TO TORQUE TREE STUDS. RIG UP AND TORQUE STUDS ACCORDING TO VALVE SHOP SPECS. RIG DOWN VALVE CREW. 22:00 - 22:30 0.50 STWHIP P WEXIT PJSM FOR MAKING UP BHA. MAKE UP BUILD SECTION DRILLING ASSEMBLY BHA#2. RUN HYCALOG DURAFORCE 4 25"BICENTER BIT ON A 2-7/8"ULS MOTOR WITH 2.45 DEGREE BEND. RUN IN HOLE. 22:30 - 23:00 0.50 STWHIP P WEXIT MAKE UP INJECTOR AND QUICK TEST SUB. TEST TO 250 PSI LOW,3500 PSI HIGH FOR 5 CHARTED MINUTES EACH. 23:00 - 00:00 1.00 STWHIP P - WEXIT RIH WITH BUILD DRILLING ASSEMBLY TO 6,090'MD.RUN AT 100 FPM PUMPING AT 0.21 BPM AND 853 PSI. _ 5 9/7/2012 00:00 - 01:00 1.00 STWHIP P WEXIT RIH AT 100 FPM PUMPING AT 0.21 BPM WITH 900 PSI TO 9,890'MD. 01:00 - 01:15 0.25 STWHIP P WEXIT RUN TIE-IN LOG AT 1.7 FPM PUMPING AT 0.20 BPM WITH 1110 PSI.DOWN WEIGHT 15K. MUD WEIGHT IN AND OUT 8.5 PPG.VOLUME 320 BBLS.CORRECTION OF PLUS 5'.IA=44 PSI,OA=7 PSI. 01:15 - 03:00 1.75 DRILL P PROD1 RUN TO BOTTOM WITH NO PROBLEMS THROUGH WINDOW. ESTABLISH PARAMETERS. DIRECTIONALLY DRILL AHEAD IN BUILD SECTION OF PRODUCTION ZONE TO 10,225'MD. PUMP AT 2.9 BPM WITH 3030 PSI, FREE SPIN 2700 PSI. UP WIEGHT 38K, DOWN WEIGHT 13K WITH 2.4K WOB. MUD WEIGHT IN AND OUT 8.5 PPG, ECD 9.91. VOLUME 332 BBLS.IA=60 PSI,OA=10 PSI. 03:00 - 03:15 0.25 DRILL P PROD1 WIPE BACK TO WINDOW.UP WEIGHT 34K, DOWN 14K.TAKE SLOW PUMP RATES. PUMP#1 AT 1.0 BPM WITH 1520 PSI 0.5 BPM WITH 1270 PSI PUMP#2 AT 1.OBPM WITH 1510PSI 0.5 BPM WITH 1265 PSI RUN TIE-IN LOG FOR RA TAG AT 10,200'MD. RA TAG AT 10,182'MD.TOP OF WINDOW SLIDE AND WINDOW IS AT 10,173'MD, BOTTOM OF WINDOW AT 10,182'MD. Printed 10/1/2012 10:52.41AM North America -ALASKA- BP Page 7 of 35 Operation Summary Report Common Well Name:C-24 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:9/3/2012 I End Date: 9/19/2012 X3-0124Y-C: (2,217,200.00) Project: Prudhoe Bay Site: PB C Pad Rig Name/No.: NORDIC 1 Spud Date/Time:9/5/1982 12:00:00AM Rig Release: Rig Contractor: NORDIC CALISTA UWI:/Lat:070°17'47.296"6 Long: 0148°40'08.689"W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 03:15 - 06:00 2.75 DRILL P PROD1 DIRECTIONALLY DRILL AHEAD IN BUILD SECTION OF PRODUCTION ZONE TO 10,325' MD. PUMP AT 2.8 BPM WITH 3060 PSI, FREE SPIN 2800 PSI. UP WIEGHT 38K, DOWN WEIGHT 15K WITH 1.6K WOB.MUD WEIGHT IN AND OUT 8.5 PPG, ECD 9.92.VOLUME 335 BBLS. IA=63 PSI,OA=12 PSI. PERFORMED SHORT WIPER TO WINDOW AT 10,305'MD 'WITH NO PROBLEMS. RUN BACK TO BOTTOM 'AND DRILL AHEAD IN BUILD SECTION. 06:00 - 08:30 2.50 DRILL P PROD1 CONTINUE TO DRILL AHEAD FROM 10,325'TO ,10,450' FREE SPIN AT 2.7-BPM/2800-PSI. DRILL AHEAD WITH 200-600-PSI AND.7- 3K-LBS DHWOB. MW IN/MW OUT=8.52-PPG/8.54-PPG. AT START, IA/OA/PVT/ECD=76-PSI/ 20-PSI/331-BBLS/9.93-PPG. END, IA/OA/PVT/ECD=78-PSI/18-PSI/ 327-BBLS/9.93-PPG. 08:30 - 09:00 0.50 DRILL P PROD1 WIPE BACK TO BELOW THE WINDOW AT 10,215'.CLEAN TRIP WITH NO TAGS.AVG POOH 27-FT/MIN AND RIH 23-FT/MIN. AT START, IA/OA/PVT =78-PSI/18-PSI/ 327-BBLS END IA/OA/PVT=79-PSI/20-PSI/327-BBLS 09:00 - 14:45 5.75 DRILL P PROD1_ ,DRILL_AHEAD BUILD SECTION FROM 10,450', TO 10,57$__ FOUND MINOR LOSSES. HARD FORMATION WITH DECREASE IN ROP 4-15-FT/HR AT 10,530'-10,540'AND 10,575'- 10,578' FREE SPIN AT 2.75-BPM/2900-PSI. DRILL AHEAD WITH 50-900-PSI AND.5 2K-LBS DHWOB. MW IN/MW OUT=8.53-PPG/8.56-PPG AT START, IA/OA/PVT/ECD=79-PSI/ 20-PSI/327-BBLS/9.96-PPG. END, IA/OA/PVT/ECD=95-PSI/24-PSI/ 326-BBLS/9.97-PPG 14:45 - 15:15 0.50 DRILL P PROD1 KICK DRILL WHILE DRILLING.SIMULATED INCREASED FLOW RATE AND CREW RESPONDED WELL.CT WAS PICKED OFF BOTTOM AND PUMPS SHUT OFF. BEGAN TO MONITOR FLOW.AAR CONDUCTED DISCUSSING FURTHER STEPS IF FLOW WAS SEEN AND DIFFERENT SENARIOS HOW TO ACT. 15:15 - 15:30 0.25 DRILL P PROD1 CONTINUED TO DRILL FROM 10,578'TO 10,581' HARD FORMATION WITH DECREASED ROP 3.5-10-FT/HR AT 10,578'- FREE SPIN AT 2.75-BPM/2900-PSI. DRILL AHEAD WITH 300-PSI AND 3-5K-LBS DHWOB. MW IN/MW OUT=8..5-PPG/8.54-PPG. AT START, IA/OA/PVT/ECD= 95-PSI/ 24-PSI/326-BBLS/9.97-PPG END, IA/OA/PVT/ECD=100-PSI/25-PSI/ 324-BBLS/9.97-PPG. Printed 10/1/2012 10:52:41AM North America-ALASKA- BP S Page 8 of 35 Operation Summary Report Common Well Name:C-24 AFE No Event Type: RE-ENTER-ONSHORE(RON) I Start Date:9/3/2012 End Date: 9/19/2012 X3-0124Y-C: (2,217,200.00) Project:Prudhoe Bay Site: PB C Pad Rig Name/No.: NORDIC 1 Spud Date/Time:9/5/1982 12:00:00AM Rig Release: Rig Contractor:NORDIC CALISTA UWI:/Lat:070°17'47.296"6 Long: 0148°40'08.689"W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 15:30 - 16:00 0.50 DRILL P PROD1 WIPER TRIP FROM 10,581' TO WINDOW. NO ISSUES. CIRCULATE AT 3.1-BPM/3520-PSI. 16:00 - 16:10 0.17 DRILL P PROD1 LOG TIE IN TO RA TAG. APPLY+2'CORRECTION. 16:10 - 16:20 0.17 DRILL P PROD1 WIPER TRIP FROM WINDOW TO 10,581'. 16:20 - 17:00 0.67 DRILL P PROD1 DRILL TO 10,583'AND UNABLE TO MAKE FURTHER PROGRESS. DISCUSS SITUATION WITH CTD SUPT& DECIDE TO POH.TO CHECK BIT. 17:00 - 17:15 0.25 DRILL P PROD1 FLOW CHECK WELL-NO FLOW. 17:15 - 17:30 0.25 DRILL P PROD1 PULL OUT OF HOLE ABOVE WINDOW AT 10,150'MD.UP WEIGHT 47K.MUD WEIGHT IN AND OUT 8.6 PPG. 17:30 - 17:40 0.17 DRILL P PROD1 FLOW CHECK ABOVE WINDOW-STATIC. OPEN EDC.VOLUME 322 BBLS. IA=95 PSI, OA=24 PSI. 17:40 - 19:30 1.83 DRILL P PROD1 POOH.MUD WEIGHT IN AND OUT 8.6 PPG. PULL AT 50 FPM PUMPING AT 3.2 BPM WITH 2655 PSI.UP WEIGHT 46K.VOLUME 318 BBLS.AT 8,500'MD INCREASE PULLING SPEED TO 90 FPM. PUMPING AT 3.0 BPM WITH 2500 PSI.UP WEIGHT 28K.MUD WEIGHT IN AND OUT 8.6 PPG.VOLUME 304 BBLS. PULL UP BELOW WELLHEAD. 19:30 - 20:00 0.50 DRILL P PROD1 JOG CUTTINGS OUT OF HOLE.SHALE,CLAY AND METAL OFF SHAKERS.RIH TO 500'MD AND CIRCULATE BACK TO BHA AT 270'MD. CLEANING OUT CUTTINGS.FLOW CHECK WELL-STATIC. 20:00 - 21:00 1.00 DRILL P PROD1 PJSM.POOH WITH BUILD ASSEMBLY,BHA#2 AND LAY DOWN.BIT BALLED UP AND 2 PLUGGED JETS.BHA WITH SOME CLAY ON CONNECTIONS.CHANGE OUT BIT.CHECK MOTOR-NO PROBLEMS. 21:00 - 21:30 0.50 DRILL P PROD1 STAB INJECTOR.MAKE UP QUICK TEST SUB AND TEST TO 250 PSI LOW,3500 PSI HIGH FOR 5 MINUTES EACH-PASS. 21:30 - 23:15 1.75 DRILL P PROD1 RIH WITH BUILD ASSEMBLY BHA#3. RUN IN AT 100 FPM. PUMP AT 0.23 BPM WITH 850 PSI.DOWN WEIGHT 9K.MUD WEIGHT IN AND OUT 8.6 PPG. IA=65 PSI,OA=18 PSI.PIT VOLUME 263 BBLS. RUNNING IN HOLE AT 7,000'MD.SPEED 92 FPM PUMPING AT 0.25 BPM WITH 1102 PSI. DOWN WEIGHT 7.5K.MUD WEIGHT IN AND OUT 8.6 PPG.VOLUME 296 BBLS. IA=62 PSI, OA= 16 PSI. 23:15 - 23:30 0.25 DRILL P PROD1 LOG TIE-IN AT 10,200'MD AT 1.4 FPM PUMPING AT 0.22 BPM WITH 1140 PSI. VOLUME 316 BBL.MUD WEIGHT IN AND OUT 8.6 PPG.DOWN WEIGHT 16K.CORRECTION OF MINUS 1'. Printed 10/1/2012 10:52:41AM North America-ALASKA- BP Page 9 of 35 • _r tion Summary Report • Common Well Name: C-24 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:9/3/2012 End Date: 9/19/2012 X3-0124Y-C: (2,217,200 00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.. NORDIC 1 Spud Date/Time:9/5/1982 12:00:OOAM Rig Release: Rig Contractor:NORDIC CALISTA UWI:/Lat:070°17'47.296"6 Long: 0148°40'08.689'W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 23:30 - 00:00 0.50 DRILL P PROD1 RIH AT 32 FPM PUMPING AT 1.3 BPM WITH 1670 PSI.TAG UP AT TD OF 10,582'MD. PULL UP HOLE AND TAKE SLOW PUMP RATES. PUMP#1 AT 1.0 BPM WITH 1512 PSI 0.5 BPM WITH 1289 PSI PUMP#2 AT 1.0 BPM WITH 1524 PSI 0.5 BPM WITH 1278 PSI RUN IN HOLE TO TD. DOWN WEIGHT 15K. 9/8/2012 00:00 - 03:00 3.00 DRILL P PROD1 DIRECTIONALLY DRILL IN BUILD SECTION OF PRODUCTION HOLE TO 10,587'MD. PUMP AT 3.0 BPM WITH 3260 PSI, FREE SPIN 2900 PSL MUD WEIGHT IN AND OUT 8.6 PPG.UP WEIGHT 38K,DOWN WEIGHT 16K WITH 3K-6K WOB.ECD 9.9 PPG.VOLUME 312 BBLS. IA= 90 PSI,OA=22 PSI.HAVING TROUBLE MAKING HOLE AFTER TRIP.CHANGING UP PARAMETERS SUCH AS WOB AND PUMP RATES.MAKING FREQUENT SHORT WIPES AND TRYING TO SPUD IN.PUMP 80 BBLS NEW MUD DOWNHOLE. 03:00 - 05:30 2.50 DRILL - P PROD1DIRECTIONALLY DRILL AHEAD TO 10,600 MD PUMPING AT 2.8 BPM WITH 3200 PSI, FREE SPIN 2980 PSI.WOB 3-6K WITH ECD OF 9.93 PPG. MUD WEIGHT IN AND OUT 8.6 PPG. ROP PICKING UP WITH NEW MUD AT BIT TO 15-20 FPH. MAKING FREQUENT BHA WIPES. PUMP 20 BBLS NEW MUD PILL. DRILLING RATE IMPROVING. DIRECTIONAL DRILL AHEAD TO 10,646'MD PUMPING AT 2.8 BPM WITH 3150 PSI, FREE SPIN 2980 PSI.WOB 1-3K WITH ECD OF 9.97 PPG.MUD WEIGHT IN AND OUT 8.6 PPG. ROP PICKING UP WITH NEW MUD AT BIT TO 50-80 FPH.MAKING WIPES AS NECESSARY. 05:30 - 06:15 0.75 DRILL P PROD1 PERFORM WIPER TRIP TO WINDOW FROM 10,646'MD. PUMP AT 2.8 BPM WITH 2900 PSI. UP WEIGHT 38K,DOWN WEIGHT 14K. PULL AT 50 FPM,RIH AT 25 FPM.NO PROBLEMS. 06:15 - 09:20 3.08 DRILL P PROD1 OBTAIN SLOW PUMP RATES&DRILL AHEAD FROM 10,646'TO 10,800'. FREE SPIN=2.8-BPM/2900-PSI. DRILL AHEAD WITH 1 -3.5K-LBS DHWOB AND 100-400-PSI MOTOR WORK. ROP STEADILY INCREASING AND GR SHOWS CLEAN SAND. GEO DIRECTS TO LEVEL OUT AT 8960'TVD. BHA WIPER FROM 10.731'AND 10.786'. AT START, IA/OA/PVT/ECD=90-PSI/ 25-PSI/288-BBLS/10.01-PPG. MW IN/OUT= 8.6-PPG. AT END, IA/OA/PVT/ECD= 100-PSI/27-PSI /285-BBLS/10.10-PPG. MW IN/OUT= 8.6-PPG. 09:20 - 10:15 0.92 DRILL P PROD1 WIPER TRIP FROM 10,800'TO WINDOW. CIRCULATE AT 3-BPM/3230-PSI. SEE 10K-LB OVERPULL&MINIMAL MOTOR WORK AT 10,590'ON TRIP TO WINDOW. MINIMAL SET DOWNS THROUGH 10,570' SHALE SECTION. Printed 10/1/2012 10:52:41 AM • North America -ALASKA- BP 110 Page 10 of 35 Operation Summary Report Common Well Name:C-24 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 9/3/2012 End Date: 9/19/2012 X3-0124Y-C: (2,217,200.00) Project:Prudhoe Bay Site: PB C Pad Rig Name/No.:NORDIC 1 Spud Date/Time:9/5/1982 12:00:00AM Rig Release: Rig Contractor:NORDIC CALISTA UWI:/Lat:070°17'47.296"6 Long: 0148040'08.689'W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 10:15 - 11:50 1.58 DRILL P PROD1 DRILL AHEAD FROM 10,800'TO 10,900'. COMPLETED BUILD SECTION. FREE SPIN=2.75-BPM/2890-PSI. BHA WIPER FROM 10,845'. SECOND BHA WIPER FROM 10,875'. AT START, IA/OA/PVT/ECD= 100-PSI/ 30-PSI/283-BBLS/10.07-PPG. MW IN/OUT= 8.6-PPG. AT END, IA/OA/PVT/ECD= 107-PSI/29-PSI /280-BBLS/10.10-PPG. 11:50 - 14:50 3.00 DRILL P PROD1 POH TO CHANGE BHA FOR LATERAL SECTION. FLOW CHECK AT BOTTOM.NO FLOW OBSERVED.' FLOW CHECK ABOVE WINDOW. NO FLOW OBSERVED. OPEN ECD ONCE ABOVE WINDOW. BREAK CIRC AT 3.7-BPM/2900-PSI&POH. MAKE 200'JOG AT SURFACE AS INCREASE IN SMALL PENCIL ERASER SIZED CHUNKS OF CLAYSTONE ARE SEEN ACROSS SHAKERS. ;14:50 - 15:30 0.67 DRILL P PROD? ' 'FLOW CHECK AT 200' CLOSE EDC. HOLD PJSM ON LD BHA#3. DISCUSS POSITIONS OF PEOPLE,WELL CONTROL CONSIDERATIONS AND COMPONENT HANDLING. UNSTAB INJECTOR&SET BACK OVER CIRC HOLE. BLOW DOWN&LD BHA. GRADE BIT: 1-1-BU. 15:30 - 16:00 0.50 DRILL P PROD1 ADJUST 2-7/8"ULS MOTOR TO 1.2-DEG BEND. CLEAN OUT POSSUM BELLY AND DIFFUSER- RECOVER—2-GALLONS SHALE CHUNKS AND A FEW ISOLATED PIECES OF STEEL FROM WINDOW MILLING. 16:00 - 16:30 0.50 DRILL P PROD1 MU LATERAL BHA(#4). BHA CONSISTS OF 3-3/4"X 4-1/8"HUGHES BICENTER WITH PLUGGED WING PORT,1.2-DEG 2-7/8"ULS MOTOR,HOT,USMPR,DGS,DPS,EDC,P&C, WEAR SUB,LQC,UQC,XO,&CTC. OAL= 80.48'. 16:30 - 16:50 0.33 DRILL P PROD1 STAB ON INJECTOR&PRESSURE TEST QTS. LOW TEST 250-PSI AND HIGH 4800-PSI FOR 5 MIN TEST.PASSED. 16:50 - 18:45 1.92 DRILL P PROD1 RIH WITH LATERAL ASSEMBLY BHA#4 TO 10,200'MD. 18:45 - 19:15 0.50 DRILL P PROD1 LOG TIE-IN FROM 10,200'MD.CORRECTION OF MINUS 1'. 19:15 - 19:45 0.50 DRILL P PROD1 RIH TO BOTTOM OF 10,900'MD.PUMP AT 0.26 BPM WITH 1270 PSI.UP WEIGHT 34K,DOWN 16K.MUD WEIGHT IN AND OUT 8.6 PPG. VOLUME 268 BBLS.SHOOT 2 SURVEYS ON THE WAY IN AT 10,472'MD AND 10,500'MD. IA =66,OA=17 PSI.TAKE WEIGHT OF 4K DOWN AT 10,590'MD. 19:45 - 21:45 2.00 DRILL P PROD1 MAD PASS FROM 10,900'MD TO 10,200'MD AT 5.6 FPM. PUMP AT 2.6 BPM WITH 2800 PSI. UP WEIGHT 35K. Printed 10/1/2012 10:52:41AM North America-ALASKA- BP 11 of 35 Operation Summary Report , Common Well Name:C-24 AFE No Event Type: RE-ENTER-ONSHORE(RON) I Start Date: 9/3/2012 End Date: 9/19/2012 IX3-0124Y-C. (2,217,200 00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.:NORDIC 1 Spud Date/Time:9/5/1982 12:00.00AM Rig Release: Rig Contractor:NORDIC CALISTA UWI:/Lat:070°17'47.296"6 Long: 0148°40'08.689'W _ Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 21:45 - 22:00 0.25 DRILL P PROD1 POH TO 9,650 BIT DEPTH,9,570'LOG DEPTH FOR CCL LOG.PULL AT 72 FPM PUMPING AT 2.7 BPM WITH 2835 PSI.MUD WEIGHT IN AND OUT 8.6 PPG.VOLUME 257 BBL. 22:00 - 22:45 0.75 DRILL P PROD1 RUN CCL LOG FROM 9,570MD TO 10,280'MD. PUMP AT 0.20 BPM WITH 1215 PSI.DOWN WEIGHT 16K.VOL 262. 22:45 - 2300 0.25 DRILL P PROD1 POH INTO WINDOW AT 10,150'MD AT 30 FPM. PUMP AT 0.26 BPM WITH 886 PSI.UP WEIGHT 40K. 23:00 - 23:30 0.50 EVAL P PROD1 EVALUATE MAD PASS LOG AND DETERMINE NO SIGNIFICANT WATER CUT FORMATION. yviii DRILL AHEAD. 23:30 - 23:45 0.25 DRILL P PROD1 RUN TIE-IN LOG AT 10,200'MD.MAKE PLUS 2.5'CORRECTION. 23:45 - 00:00 0.25 DRILL P PROD1 RUN IN HOLE AT 33 FPM PUMPING AT 1.5 BPM WITH 1900 PSI. DOWN WEIGHT 15K MUD WEIGHT IN AND OUT 8.6 PPG.VOLUME 260 BBLS.IA=70 PSI,OA=17 PSI. 9/9/2012 00:00 - 00:30 0.50 DRILL -P PROD1 RUN IN HOLE AT 33 FPM PUMPING AT 1.5 BPM WITH 1900 PSI. DOWN WEIGHT 15K. 2M6U0DB WB BBLS. EIGHTA=I7N0APNSDI 00UAT=8167 PPSPGI.BTPM WI SLOW PUMP RATES. PUMP#1 AT 1 0 BPM WITH 1645 PSI 0.5 BPM WITH 1387 PSI PUMP#2 AT 1.0 BPM WITH 1584 PSI 0.5 BPM WITH 1374 PSI 00:30 - 02:30 2.00 DRILL P PROD1 DIRECTIONALLY DRILL AHEAD IN LATERAL SECTION OF PRODUCTION HOLE.PUMPING AT 2.8 BPH WITH 3300 PSI, FREE SPIN 3020 PSI. DOWN WEIGHT 14K WITH WOB 2.9K AND AN ROP OF 30-50 FPH MUD WEIGHT IN AND OUT 8 6 PPG WITH AND ECD OF 10 12 PPG PIT VOLUME 257 BBLS. IA=95 PSI,OA=25 PSI 02:30 - 03:30 1.00 DRILL P PROD1 PERFORM WIPER TO WINDOW FROM 11,050' MD.PULL AT 30 FPM.RUN IN AT 50 FPM.UP WEIGHT 37K,DOWN WEIGHT 12K.PUMP AT 2.8 BPM WITH 3098 PSI.RIGHT AFTER STARTING OFF BOTTOM WELL STARTED TO TAKE A DRINK.INITIAL LOSS RATE WAS AT 60 BPH OR 34%THEN DECREASING AS WE APPROACHED BOTTOM AGAIN TO 25 BPH OR 16%.NO OTHER HOLE ISSUES NOTED ON WIPER.DID NOT SEE ANYTHING AT 10,950' MD. Printed 10/1/2012 10:52.41AM „ , S North America -ALASKA- BPPage 12 of 35 Operation Summary Report Common Well Name:C-24 AF=E No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 9/3/2012 End Date:9/19/2012 X3-0124Y-C: (2,217,200.00) Project: Prudhoe Bay Site: PB C Pad Rig Name/No.: NORDIC 1 Spud Date/Time:9/5/1982 12:00:00AM Rig Release: Rig Contractor: NORDIC CALISTA UWI:/Lat:070°17'47.296"6 Long: 0148°40'08.689'W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 03:30 - 06:00 2.50 DRILL P PROD1 DIRECTIONALLY DRILL AHEAD IN LATERAL SECTION OF PRODUCTION HOLE.PUMPING AT 2.8 BPH WITH 3175 PSI, FREE SPIN 3020 PSI.DOWN WEIGHT 11K WITH WOB 1.5K AND AN ROP OF 30-60 FPH.MUD WEIGHT IN AND OUT 8.6 PPG WITH AND ECD OF 10.07 PPG. PIT VOLUME 228 BBLS.IA=95 PSI,OA=25 PSI.DRILLING AHEAD WITH 25 BPH LOSSES ON INITIAL DRILLING AFTER WIPER. DRILL AHEAD TO 11,180'MD PUMPING AT 2.8 BPH WITH 3226 PSI,FREE SPIN AT 3080 PSL DOWN WEIGHT 10K,UP WEIGHT 38K WITH 2-4K WOB AND ROP AT 10-30 FPH.MUD WEIGHT IN AND OUT 8.6 PPG WITH ECD AT 10.07 PPG.VOLUME 183 WITH LOSSES AT 19-25 BPH. IA=101 PSI,OA=28 PSI. 06:00 - 07:30 1.50 DRILL P PROD1 WIPERTO WINDOW. MINIMAL ISSUE ACROSS 10,590"SHALE SECTION-ISOLATED OVERPULLS. HOT ORIENTING ERRATICALLY NEAR END OF -- LAST SECTION DRILLED. IT WILL ORIENT • AND THEN BLEEDS OFF AND JUMPS .AROUND. DISCUSS WITH DD AND DECIDE TO POH PASS THROUGH WINDOW WITHOUT ISSUE. 07:30 - 09:45 2.25 DRILL P PROD1 FLOW CHECK WELL ABOVE WINDOW-NO FLOW. ASSESS STATIC LOSS RATE AT 12-BPH. OPEN EDC. ESTABLISH CIRCULATION AT 2.5-BPM/ 2290-PSI. LOSS RATE=20-BPH. IA/OA=85-PSI/25-PSI. CONTINUE TO POH. AS BHA NEARS SURFACE,SEE INCREASE IN PENCIL ERASER SIZED CLAYSTONE(MUCH LESS THAN YESTERDAY). MAKE 200'JOG AT SURFACE AND CIRC UNTIL NO CLAYSTONE SEEN. FLOW CHECK AT 200-FT-NO FLOW. IA/OA=66-PSI/25-PSI. 09:45 - 10:00 0.25 DRILL P PROD1 PJSM HELD FOR RD INJECTOR, LD TOOLS HAZARDS PINCH POINTS,OVERHEAD EQUIPMENT,TOOL HANDLING,PRESSURE. 10:00 - 10:45 0.75 DRILL P PROD1 RD INJECTOR, LD LATERAL BHA. GRADE BIT AT:6-1-RO-N-X-I-CT-BHA ORIENTER TOOL MAY HAVE BEEN EFFECTED BY THE BIT CONDITION AND RUBBLE FORMATION. DECIDE TO RUN NEW ORIENTER TOOL. FILL WELL-TOOK 4-BBLS. 10:45 - 11:30 0.75 BOPSUR P PROD1 PJSM FOR JETTING STACK HAZARDS PRESSURE,LOSSES,LIFTING INJECTOR PU INJECTOR,MU SWIZZLE STICK ASSEMBLY AND JET STACK. OAL OF SWIZZLE ASSEMBLY=8.3' WHILE JETTING, RE-BEND 2-7/8”ULS MOTOR TO 1.3-DEG&PROGRAM BHI TOOLS. ADJUST GOOSENECK. UNSTAB INJECTOR&LD SWIZZLE STICK. Printed 10/1/2012 10:52:41AM • =`North America -ALASKA-BP • Page 13 of 35 O aeration Summary Report Common Well Name:C-24 AFE No Event Type:RE-ENTER-ONSHORE(RON) Start Date: 9/3/2012 End Date: 9/19/2012 tX3-0124Y-C: (2,217,200.00) Project:Prudhoe Bay Site: PB C Pad Rig Name/No.:NORDIC 1 Spud Date/Time:9/5/1982 12 00:O0AM Rig Release: Rig Contractor:NORDIC CALISTA UWI:/Lat:070°17'47.296"6 Long: 0148°40'08.689'W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 11:30 - 12:30 1.00 DRILL P PROD1 CHANGE OUT BHI DFCV. MU TEST PLATE. TEST DFCV TO 250-PSI/3500-PSI. HOLD AND CHART EACH TEST FOR 5-MINUTES. GOOD TESTS. IA/OA=60-PSI/20-PSI. 12:30 - 12:45 0.25 BOPSUR P PROD1 PU SAFETY JT&FUNCTION TEST BOPE FROM RIG FLOOR PANEL. GOOD TEST. 12:45 - 13:15 0.50 DRILL P PROD1 MU LATERAL DRILLING BHA. BHA CONSISTS OF 4-1/4"HYC BICENTER W/DURAFORCE CUTTERS,1.3-DEG 2-7/8"ULS MOTOR, HOT, USMPR, DGS, DPS, EDC, P&C, WEAR SUB,LOC, UQC,XO,CTC. OAL=80.40' 13:15 - 13:30 0.25 DRILL P PROD1 PUPU INJECTOR,MU COIL TO BHA&STAB ON WELL. TEST QTS TO 250-PSI/3500-PSI. 13:30 - 15:30 2.00 DRILL , P PROD1 ESTABLISH CIRCULATION AT.5-BPM/ 975-PSI. RIH WITH LATERAL BHA TO 10,200'. LOSS RATE=12-BPH. IA/OA=50-PSI/12-PSI. 15:30 - 15:45 0.25 DRILL P PROD1 LOG TIE IN TO RA TAG. 'NO CORRECTION APPLIED. 15:45 - 16:30 0.75 DRILL P PROD1 RIH TO TAG TD AT 11200, CIRCULATE AT 2.5-BPM IN/2.1-BPM OUT WITH 2680-PSI. LOSS RATE INITIALLY 20-BP H. SEE SET DOWN AT 10,602'. PU AND REDUCE PUMP RATE TO 1-BPM. PASS WITHOUT ISSUE. INCREASE RATE BACK TO 2.6-BPM IN/ 2.37-BPM OUT WITH 2900-PSI. LOSS RATE= 20-25-BPH. OBTAIN SLOW PUMP RATES AT 11,000'. 16:30 - 17:00 0.50 DRILL P PROD1 DRILL AHEAD FROM 11,200'TO 11,350'MD. FREE SPIN=2.7-BPM/2950-PSI. DRILL AHEAD WITH 3-5K-LBS DHWOB AND 100-450-PSI MOTOR WORK. MAKE BHA WIPER AT 11,290'. AT START,IA/OA/PVT/ECD=60-PSI/ 12-PSI/221-BBLS/10.12-PPG. MW IN/OUT= 8.7-PPG. LOSS RATE INITIALLY 20-BPH. 17:00 - 21:00 4.00 DRILL P PROD1 WIPER TRIP TO WINDOW AT 11,192'MD.NO ISSUES PULLING UP HOLE.RIH AT 30 FPM PUMPING AT 2.8 BPM WITH 3015 PSI.UP WEIGHT 40K,DOWN WEIGHT 14K.MUD WEIGHT IN AND OUT 8.7 PPG.SLOW PUMPS TO 1.0 BPM RUNNING THROUGH SHALE SECTIONS AT 10,550'MD AND 10,600'MD. TAKE SLOW PUMP RATES. PUMP#1 AT 1.0 BPM WITH 1553 PSI 0.5 BPM WITH 1315 PSI PUMP#2 AT 1.0 BPM WITH 1540 PSI 0.5 BPM WITH 1230 PSI Printed 10/1/2012 10.52:41AM North America -ALASKA- BP i Page 14 of 35 Operation Summary Report Common Wet Name:C-24 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 9/3/2012 End Date: 9/19/2012 X3-0124Y-C: (2,217,200.00) Project:Prudhoe Bay Site: PB C Pad Rig Name/No.: NORDIC 1 Spud Date/Time:9/5/1982 12:00:OOAM Rig Release: Rig Contractor:NORDIC CALISTA UWI:/Lat:070°17'47.296"6 Long: 0148°40'08.689'W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 21:00 - 00:00 3.00 DRILL P PROD1 DIRECTIONAL DRILL AHEAD TO 11,383'MD. PUMPING AT 2.8 BPH WITH 3280 PSI,FREE SPIN 2990 PSI.DOWN WEIGHT 6K WITH WOB AT 4-6K.MUD WEIGHT IN AND OUT 8.7 PPG WITH AN ECD OF 10.13 PPG.LOSSES AT 14 BPH.SLOW DRILLING THROUGH THIS SECTION. DIRECTIONAL DRILL AHEAD TO 11,464'MD. PUMPING AT 2.8 BPH WITH 3120 PSI,FREE SPIN 3020 PSI.UP WEIGHT 42K,DOWN WEIGHT 11K WITH WOB AT 2-4K.MUD WEIGHT IN AND OUT 8.7 PPG WITH AN ECD OF 10.15 PPG.LOSSES AT 11 BPH.PERFORM 100'WIPER AT 11,447'MD.VOLUME 228 BBLS. IA=92 PSI,OA=22 BBLS. LOSSES FOR DAY 302 BBLS. 9/10/2012 00:00 - 02:00 2.00 DRILL P PROD1 DIRECTIONAL DRILL AHEAD TO 11,470'MD. PUMPING AT 2.8 BPM WITH 3300 PSI, FREE SPIN 3020 PSI. DOWN WEIGHT 12K WITH WOB AT 4-6K. MUD WEIGHT IN AND OUT 8.7 PPG WITH AN ECD OF 10.13 PPG. LOSSES AT 14 BPH.SLOW DRILLING THROUGH THIS -SECTION. 02:00 - 02:45 0.75 DRILL P PROD1 PERFORM WIPER TO 11,000'MD.PULL AT 20 FPM PUMPING AT 2.8 BPM WITH 3000 PSI.UP WEIGHT 38K,DOWN WEIGHT 14K. 02:45 - 03:15 0.50 DRILL P PROD1 DIRECTIONAL DRILL TO 11,471'MD.PUMP AT 2.8 BPM WITH 3340 PSI,FREE SPIN 3040 PSI. UP WEIGHT 38K,DOWN WEIGHT 14K WITH 2-6K WOB.MUD WEIGHT IN AND OUT 8.7 PPG WITH AN ECD OF 10.14 PPG.VOLUME 275 BBLS.IA=95 PSI,OA=25 PSI. 03:15 - 04:15 1.00 DRILL P PROD1 NOT MAKING ANY FOOTAGE WITH DIFFERENT PARAMETERS.WEIGHT TRANSFER GOOD,MOTORWORK GOOD.NO STALLS BUT NO FOOTAGE MADE IN SAND/CHERT FORMATION.(UP TO 50% CHERT).FLOW CHECK WELL FOR 10 MINUTES-STATIC.POOH.PULL AT 23 FPM PUMPING AT 2.7 BPM WITH 2900 PSI.LOSSES AT 15-20 BPH. 04:15 - 04:30 0.25 DRILL P PROD1 HELD RIG EVACUATION DRILL. EVERYONE INCLUDING TWO TRUCK DRIVERS AND A LUBRICATOR CREW ON LOCATION RESPONDED WELL TO THE UN-ANNOUNCED DRILL.HELD AAR WITH ONE FINDING.ONE OF THE PERSONNEL ON THE RIG WAS NOT ABLE TO HEAR THE ALARM IN THE PIPESHED.DECIDED WE NEED TO TEST THIS OUT AT OUR NEXT OPPORTUNITY.CHECKED STATIC LOSS RATE AT 8 BPH. 04:30 - 06:30 2.00 DRILL P PROD1 POOH.PULL AT 85 FPM PUMPING AT 3.3 BPM WITH 2890 PSI. LOSSES AT 15-20 BPH. PULL UP TO WINDOW AND FLOW CHECK WELL- NO FLOW. 06:30 - 07:00 0.50 DRILL P PROD1 HOLD PJSM ON LD BHA. FLOW CHECK WELL-NO FLOW. CLOSE EDC. UNSTAB INJECTOR AND SET BACK OVER CIRC HOLE. LD BHA. GRADE BIT-8-3-RO-N-X-I-BT-PR. NOSE COMPLETELY WRUNG OUT. Printed 10/1/2012 10:52:41AM North America -ALASKA- BP • Page 15 of 35 Operation Summary Report Common Well Name:C-24 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:9/3/2012 End Date: 9/19/2012 X3-0124Y-C: (2,217,200.00) Project:Prudhoe Bay Site: PB C Pad Rig Name/No.. NORDIC 1 Spud Date/Time: 9/5/1982 12:00.00AM Rig Release: Rig Contractor: NORDIC CALISTA UWI:/Lat:070°17'47.296"6 Long: 0148°40'08.689'W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 07:00 - 07:30 0.50 DRILL P PROD1 BEND NEW 2-7/8"ULS MOTOR TO 1.3-DEG. STATIC LOSS RATE=4-BPH. 07:30 - 08:00 0.50 DRILL P PROD1 HOLD PJSM ON MU LATERAL BHA. MU LATERAL DRILLING BHA(#6). BHA CONSISTS OF:3-3/4"X 4-1/4"HYC BICENTER W/DURAFORCE XD CUTTERS,1.3-DEG 2-7/8" ULS MOTOR, HOT, USMPR,DGS, DPS, EDC, P&C,WEAR SUB, LQC,UQC,XO,CTC. PU INJECTOR,MU COIL TO BHA&STAB ON WELL. TEST QTS TO 250-PSI/3500-PSI. HOLD AND CHART EACH TEST FOR 5-MINUTES. 08:00 - 10:00 2.00 DRILL P PROD1 RIH WITH BHA#6. CIRCULATE AT.45-BPM/1000-PSI. LOSS RATE=6-BPH. IA/OA=60-PSI/20-PSI. 10:00 - 10:20 0.33 DRILL , P PROD1 LOG TIE IN TO RA TAG. APPLY NO DEPTH CORRECTION. CIRCULATE AT.4-BPM/1200-PSI. 10:20 - 11:15 0.92 DRILL _P PROD1 CONTINUE RIH. PUMP AT 1-BPM/1600-PSI. LOSS RATE INITIALLY= 14-BPH. SEE SET DOWN AT 10,500'BUT ABLE TO PASS. SET DOWN AGAIN AT 10,596'. PU, INCREASE RATE TO 1.4-BPM&RUN PAST WITH MINIMAL SET DOWN OR MOTOR WORK. INCREASE RATE TO 2.63-BPM/2850-PSI. V LOSS RATE=24-BPH. OBTAIN SLOW PUMP RATES NEAR BOTTOM. 11:15 - 13:19 2.07 DRILL P PROD1 DRILL AHEAD FROM 11,470'. FREE SPIN=2.7-BPM/2920-PSI. DRILL AHEAD WITH 2-5K-LBS DHWOB& 100-300-PSI MOTOR WORK. MAKE BHA WIPER TRIP FROM 11,600'. LOSS RATE 20-24-BPH. AT START,IA/ OA/PVT/ECD=70-PSI/ 15-PSI/195-BBLS/10.09-PPG. MW IN/OUT= 8.7-PPG. AT END,IA/ OA/PVT/ECD=83-PSI/18-PSI/ 349-BBLS/10.16-PPG.MW IN/OUT=8.7-PPG Printed 10/1/2012 10:52:41AM North America -ALASKA- BP Operation Summary Report Common Well Name:C-24 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:9/3/2012 End Date:9/19/2012 X3-0124Y-C: (2,217,200.00) Project: Prudhoe Bay Site: PB C Pad Rig Name/No.: NORDIC 1 Spud Date/Time:9/5/1982 12:00:00AM Rig Release: Rig Contractor: NORDIC CALISTA UWI:/Lat:070°17'47.296"6 Long: 01.48°40'08.689"W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 13:19 - 15:30 2.18 DRILL P PROD1 WIPER TRIP TO WINDOW.RIH AT 30 FPM PUMPING AT 2.7 BPM WITH 2980 PSI. AT 10,700'SEE INCREASE LOSSES.SLOWED DOWN PUMP RATE&CONTINUE TO POH. AT 10,588'SEE RAPID OVERPULL AND LOSSES. ATTEMPTED TO RIH AND WEIGHT DROPPED OFF INDICATING PACK OFF. WORKED PIPE&ORIENTED SLOWLY UNTIL FREE&REGAIN STEADY RETURNS WITH 24-BPH LOSSES. RIH TO 10,700'WITHOUT ISSUE. POH&SEE SLIGHT OVERPULLS&PARTIAL PACKING OFF AGAIN AT 10,560'AND 10,515'. CONTINUE TO POH TO WINDOW. REDUCE PUMP RATE&PULL THROUGH WINDOW. OPEN EDC&ESTABLISH CIRCULATION 3.7-BPM/3400-PSI. JET ( ACROSS WHIPSTOCK TRAY WITH OPEN EDC &THEN POH TO 10,150'WHILE CBU. SEE STEADY RETURNS OF SAND,CUTTINGS VOLUME DECREASING AFTER BOTTOMS UP TO SURFACE. SHUT DOWN AND CLOSE EDC. 15:30 - 15:45 0.25 DRILL P PROD1 RIH TO 10,200'AND LOG TIE IN. APPLY+5'CORRECTION. IA/OA=70-PSI/20-PSI. Printed 10/1/2012 10:52:41AM North America-ALASKA-BP • Page17of35 Operation Summary Report Common Well Name:C-24 1AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date.9/3/2012 End Date:9/19/2012 X3-0124Y-C. (2,217,200.00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.: NORDIC 1 Spud Date/Time:9/5/1982 12.00:00AM Rig Release: Rig Contractor: NORDIC CALISTA UWI:/Lat:070°1747.296"6 Long: 0148"40'08.689"W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 15:45 - 18:00 2.25 DRILL P PROD1 RIH,TIMING 20-BBLS HI VIS FLUID TO CLEAN OUT FROM 10,500'TO 10,575'. CIRCULATE AT 2.64-BPM/2980-PSI. SEE 100-PSI MOTOR WORK AT 10,525'. CONTINUE TO RIH,CIRCULATING TO CLEAN OUT TO 10,575'. -WIPER UP FROM 10,575'TO 10,220',CHASING SWEEP AT 2.7-BPM/2955-PSI. NO NOTABLE INCREASE OR CHANGE IN CUTTINGS. PUMP 2ND 20-BBL HI VIS SWEEP&RIH TO CLEAN OUT FROM 10,575'TO 10,650'. SET DOWN MULTIPLE TIMES AT 10,590'VARYING RATES&RUNNING SPEEDS. REDUCE RATE TO 1-BPM AND RIH AT 50-FPM-SEE SET DOWN AT 10,584'AND POP PAST. INCREASE RATE TO 2.7-BPM/2975-PSI AS SOON AS PAST 10,584'. WIPE BACK UP FROM 10,650'AT 10-FPM AND 2,7-BPM. HANG UP AGAIN WITH PACKING OFF AT 10,585'. WORK FREE AND RIH TO 10,630'. ORIENT TO 90R(180-DEG OUT FROM - ,DRILLED). PU AND HANG UP AT 10,575'. RIH AND SET DOWN. PU AND REDUCE RATE TO 1-BPM AND POH. RIH TO 10,589'AND SET DOWN. PU FREE& RIH,PUMPING AT.7-BPM/1450-PSI. SET DOWN AT 10,592'. PU,ORIENT TO 45L,PUMP AT.7-BPM&RIH TO SET DOWN AT 10,600'. WORK PAST&RIH TO 10,636'.PU AT 5-FPM CIRCULATING 2.5-BPM,ORIENTED 45L-NO ISSUES,SEEING INCREASED LOSSES AT 10,575'. RIH,CIRC AT 2.5-BPM/2740-PSI,ORIENTED 45L AT 5-FPM. PU WHILE STARTING CREW CHANGE. SEE 10K-LB OVERPULL AT 10,512' NO INCREASE/CHANGE IN CUTTINGS SEEN WITH SECOND SWEEP. 18:00 - 18:30 0.50 DRILL N DPRB 10,590.00 PROD1 DECIDE TO POH TO WINDOW WHILE DISCUSSING PLAN FORWARD. NO ISSUES ON TRIP TO WINDOW. REDUCE PUMP RATE THROUGH WINDOW- NO ISSUES. FLOW CHECK-NO FLOW. OPEN EDC. 18:30 - 21:00 2.50 DRILL N DPRB 10,590.00 PROD1 ESTABLISH CIRCULATION.MUD WEIGHT IN AND OUT 8.7 PPG. POOH TO SURFACE TO CLEAN OUT WELLBORE. PUMP AT 3.4 BPM WITH 3050 PSI.JOG AT SURFACE.50% INCREASE IN SOLIDS OFF SHAKER.TAG UP ON SURFACE SHUT DOWN AND FLOW CHECK WELL-NO FLOW. LOOSING 12 BPH. 21:00 - 23:00 2.00 DRILL N DPRB 10,590.00 PROD1 RUN IN HOLE AT 80 FPM PUMPING AT 2.9 BPM WITH 2400 PSI. RUN TO TOP OF WINDOW. 23:00 - 00:00 1.00 DRILL N DPRB 10,590.00 PROD1 CIRCULATE AT TOP OF WINDOW WHILE PUTTING TOGETHER A NEW WELLPLAN FOR DRILLING A SIDETRACK.PUMP AT 0.4 BPM WTIH 1220 PSI.LOSS RATE AT 9 BPH. Printed 10/1/2012 10:52:41 AM '' .. ,°ate - • North America -ALASKA- BP • Page 18 of 35 O•pration Summary Report Common Well Name:C-24 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:9/3/2012 End Date: 9/19/2012 X3-0124Y-C: (2,217,200 00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.:NORDIC 1 Spud Date/Time: 9/5/1982 12.00.00AM Rig Release: Rig Contractor:NORDIC CALISTA UWt/Lat:070°17'47.296"6 Long: 0148°40'08.689'W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 9/11/2012 00:00 - 05:00 5.00 DRILL N DPRB 10,590.00 PROD1 CIRCULATE AT TOP OF WINDOW WHILE PUTTING TOGETHER A NEW WELLPLAN FOR DRILLING A SIDETRACK. PUMP AT 0.4 BPM WTIH 1220 PSI.LOSS RATE AT 9 BPH. 05:00 - 05:15 0.25 DRILL N DPRB 10,590.00 PROD1 CLOSE EDC.ESTABLISH CIRCULATION AT 2 8 BPM WITH 3000 PSI.UP WEIGHT 36K,DOWN --WEIGHT 16K.LOSSES AT 28 BPH WHILE PUMPING.RIH AT 30 FPM AND CLEAN UP BILLET SETTING AREA.POOH. IA=50 PSI,OA =11 PSI.FLOW CHECK AT WINDOW-NO FLOW.MUD WEIGHT IN AND OUT 8.7 PPG. 05:15 - 07:00 1.75 DRILL N DPRB 10,590.00 PROD1 POOH AT90 FPH PUMPING AT 3.4 BPM WITH 3050 PSI. UP WEIGHT 33K.MUD WEIGHT IN AND OUT 8.7 PPG.LOSSES AT 40 BPH DECREASING T06-8-BPH NEAR SURFACE. 07:00 - 07:45 0.75 DRILL N DPRB 10,590.00 PROD1 FLOW CHECK WELL-NO FLOW. HOLDPJSM&LDBHA#6. 07:45 - 08:15 0.50 WHSUR ` N DPRB 10,590.00 PROD1 CLOSE MASTER,SWAB&SSV. PERFORM DUAL BARRIER LEAK TIGHT ISOLATION TEST PER WELL PROGRAM TO CONFIRM SSV&SWAB ARE LEAK-TIGHT. IA/OA=50-PSI/15-PSI. 08:15 - 10:30 2.25 BOPSUR N SFAL PROD1 _TROUBLESHOOT&REPAIR LEAKING BSR ACTUATOR. REPLACE 0-RING SEALS ON ODS ACTUATOR BETWEEN RAM BARREL&BODY AND ON HYDRAULIC FLOW TUBE. PRESSURE UP ACCUMULATOR-NO LEAKS. REDUCE ACCUMULATOR PRESSURE TO 500-PSI&FUNCTION BSRS TWICE WITHOUT ISSUE OR LEAK. CONTINUE TO MONITOR. 1025-HRS: LEAVE MSG FOR AOGCC TO DISCUSS REPAIR. AOGCC REP JEFF JONES RETURNS CALL, REQUESTS SUMMARY EMAIL AND RE-TEST OF BLIND SHEAR RAMS. 10:30 - 11:15 0.75 DRILL N SFAL PROD1 DEVELOP PLAN FORWARD. RU TO TEST BLIND SHEAR RAMS 11:15 - 11:45 0.50 DRILL N SFAL PROD1 INSTALL NIGHT CAP&FLUID PACK BOP STACK. TEST BLIND-SHEAR RAMS TO 250-PSI/ 3500-PSI FOR 5-FLAT LINE MINUTES PER TEST. 11:45 - 17:00 5.25 DRILL N DPRB 10,590.00 PROD1 BSR REPAIR COMPLETED AND TESTED, PREP TO PUMP SLACK REHEAD.TEST WIRE,STAB ON TO PT THE QTS AND BHI CV'S PUMP SLACK FORWARD 17:00 - 17:25 0.42 DRILL N DPRB 10,590.00 PROD1 OPEN WELL TOA CLOSED CHOKE-NO PRESSURE,FILL THE HOLE WHILE RIH 17:25 - 17:35 0.17 DRILL N DPRB 10,590.00 PROD1 RIH TO 800'AND STARTED GETTING RETURNS.VOLUME PUMPED+PIPE DISPLACEMENT SHOWS THE WELL TOOK —18.5 BBLS REDUCING THE BHP BY 544 PSI BUT STILL 190 PSI OVER BALANCED. CIRCULATE UNTIL RETURNS CLEAN UP OR BOTTOMS UP FROM 1000' 17:35 - 17:45 0.17 DRILL N DPRB 10,590.00 PROD1 GOOD CLEAN RETURNS WITH SLIGHT LOSSES, POOH PUMPING AND FLOW CHECK THE WELL AT SURFACE Printed 10/1/2012 10.52:41AM North America-ALASKA- BP "§� "� Page 19 of 35 Operation Summary Report Common Well Name:C-24 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:9/3/2012 End Date:9/19/2012 1X3-0124Y-C: (2,217,200.00) Project: Prudhoe Bay Site:PB C Pad Rig Name/No.: NORDIC 1 Spud Date/Time:9/5/1982 12.00:00AM Rig Release: Rig Contractor:NORDIC CALISTA UWI:/Lat:070°17'47.296"6 Long: 0148°40'08.689"W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) _ 17:45 - 18:30 0.75 DRILL N DPRB 10,590.00 PROD1 100'STOP, REDUCE RATE TO 1.0 BPM TO ESTABLISH LOSS RATE WELL TAKING ABOUT 2.5-3.0 BPH SHUT DOWN PUMP AND FLOW CHECK WELL FOR 15 MINS AS PER ETL RECOMMENDATION IN OCN 18:30 - 19:30 1.00 DRILL N DPRB 10,590.00 PROD1 POP OFF LUBRICATOR AND LAY DOWN NOZZLE AND STINGER-BHA. 19:30 - 20:00 0.50 DRILL N DPRB 10,590.00 PROD1 HOLD PJSM.DISCUSS POTENTIAL FOR GAS RETURNS TO SURFACE WHILE RIH AND AGREE ON PLAN FORWARD SHOULD GAS BEEN NOTICED. 20:00 - 20:20 0.33 DRILL N DPRB 10,590.00 PROD1 START MU BHA#7 WITH 3-5/8"ALUMINUM BILLET. 20:20 - 20:35 0.25 DRILL N DPRB 10,590.00 PROD1 STAB ON INJECTOR AND PRESSURE-TEST QTS TO 275PSI/5MIN AND 3,500PSI/5MINS 20:35 - 23:00 2.42 DRILL N. DPRB 10,590.00 PROD1 RIH WITH BHA#8 AT 80FPM.OBSERVE NO INDICATION FOR ANY GAS IN THE WELLBORE. RIH TO 10,120'AND CONDUCT WEIGHT CHECK. SEE 40K LBS ON CT WEIGHT INDICATOR.SHUT IN PUMPS AND CLOSE EDC. PVT=254BBLS.IA=37PSI/OA=6 PSI. 23:00 - 23:15 0.25 DRILL N DPRB 10,590.00 PROD1 CONTINUE RIH.TIE IN TO RA-TAG YET OFT CORRECTION NEEDS TO BE APPLIED. 23:15 - 23:30 0.25 DRILL N DPRB 10,590.00 PROD1 RIH TO 10,281.50'(BIT DEPTH).PICK UP UNTIL BREAKOVER POINT IS SEEN ON WEIGHT INDICATOR.ORIENT BILLET TO 30DEG ROHS. PVT=289BBLS(-13BBLS LOSSES OVER 3HRS). 23:30 - 23:40 0.17 DRILL N DPRB 10,590.00 PROD1 START PUMPING AND SET BILLET WITH TOP OF BILLET AT 10,270'. SLACK OFF 1.5LK LBS TO CONFIRM THAT BILLET IS SET CORRECTLY. 23:40 - 00:00 0.33 DRILL N DPRB 10,590.00 PROD1 PULL INTO WINDOW AND FLOWCHECK WELL AT 10,116'.ACHIEVE GOOD FLOWCHECK AND CONTINUE POOH. 9/12/2012 00:00 - 01:45 1.75 DRILL N DPRB 10,590.00 PROD1 POOH TO 200FT. 01:45 - 02:00 0.25 DRILL N DPRB 10,590.00 PROD1 FLOWCHECK WELL(WELL STATIC),AND CONDUCT PJSM BEFORE LD/MU BHA. 02:00 - 02:20 0.33 DRILL N DPRB 10,590.00 PROD1 LAY DOWN BHA#7. 02:20 - 02:45 0.42 DRILL N DPRB 10,590.00 PROD1 MAKE UP BHA#8 WITH 3.125"x 4.25"HYC BIT. 02:45 - 03:15 0.50 DRILL N DPRB 10,590.00 PROD1 STAB ON INJECTOR AND PRESSURE-TEST QTS TO 240PSI/5MINS AND 4,300PSI/5MINS. TOP UP WELL WITH 3.3BBLS WHICH CONFIRMS LOSSES OF-3BBLS/HR. 03:15 - 05:30 2.25 DRILL N DPRB 10,590.00 PROD1 RIH WITH BHA#8. 05:30 - 05:45 0.25 DRILL N DPRB 10,590.00 PROD1 REDUCE SPEED TO 100FT/HR AND LOG FOR TIE-IN. APPLY-1 FT DEPTH CORRECTION AND CONTINUE RIH. Printed 10/1/2012 10:52:41AM P- � -- • North America -ALASKA- BP • Page 20 of 35 Operation Summary Report Common Well Name:C-24 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:9/3/2012 End Date:9/19/2012 X3-0124Y-C: (2,217,200 00) Project: Prudhoe Bay Site: PB C Pad Rig Name/No: NORDIC 1 Spud Date/Time:9/5/1982 12:00:OOAM Rig Release. Rig Contractor:NORDIC CALISTA UWI:/Lat:070°17'47.296"6 Long: 0148°40'08.689"W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 05:45 - 06:00 0.25 DRILL N DPRB 10,590.00 PROD1 TAKE SPR'S: PUMP#1: PUMP#2: 2.8 BPM-3,010 PSI- 128 SPM1.6 BPM-3,015 PSI-129 SPM 1.0 BPM- 1,574 PSI-46 SPM1.0 BPM-1,531 PSI-45 SPM 0.5 BPM-1,318 PSI-23 SPM0.5 BPM-1,322 PSI-24 SPM 06:00 - 06:30 0.50 DRILL N DPRB 10,590.00 PROD1 SLOWLY RIH,SHUT DOWN PUMPS AND DRY-TAG TOP OF WHIPSTOCK AT 10,270'. PICK UP TO 10,265',BRING PUMPS ONLINE AND COMMENCE TIME MILLING AT 1FT/HR. FREE-SPIN:3,030PSI/PVT=251 BBLS/IA= 42PSI/OA=7PSI. 06:30 - 07:30 1.00 DRILL N DPRB' 10,590.00 PROD1 STALL, PU AND RESTART TIME MILL BILLET STARTING AT 10268.3'AS PER THE OCN 07:30 - 11:10 3.67 DRILL N DPRB 10,590.00 PROD1 DRILLED 1'AT 1 FPH,INCREASE WOB TO MAINTAIN THE 200-300 PSI MOTOR WORK AS PER THE OCN FIRST CLEAN SURVEY AT 10305'SHOWS WE ARE OFF THE BILLET ACHIEVING>30°DLS AT 32.5° SLOW DRILLING VERY EASY TO STALL,THE FIRST ST THAT WAS DRILL SHOWED A LOT OF CHERT ALL THE WAY THROUGH Z2 AND INTO Z1 SHOULD SEE BETTER SAND-10400' 11:10 - 11:30 0.33 DRILL N DPRB 10,590.00 PROD1 WIPER TO WINDOW 11:30 - 14:20 2.83 DRILL N DPRB 10,590.00 PROD1 CONTINUE DRILLING FREE SPIN AT 2.70-BPM/2900-PSI DRILL AHEAD WITH 50-900?PSI AND.5- 3.0K-LBS DHWOB ✓ MW IN/MW OUT=8.70-PPG/8.70-PPG IA/OA/PVT/ECD=71-PSI/15-PSI/ 201-BBLS/10.08-PPG 10460'ROP INCREASE WITH CLEAN CONSISTENT 26 API SAND,ALSO HAVE NOT SEE THE FAULT FROM PB1 THAT SHOULD HAVE CAME IN BETWEEN 10400'TO 10470'? 14:20 - 15:00 0.67 DRILL N DPRB 10,590.00 PROD1 WIPER TO WINDOW 15:00 - 16:50 1.83 DRILL N DPRB 10,590.00 PROD1 CONTINUE DRILLING FREE SPIN AT 2.70-BPM/2900-PSI DRILL AHEAD WITH 50-300?PSI AND.5- 2.5K-LBS DHWOB MW IN/MW OUT=8.72-PPG/8.72-PPG IA/OA/PVT/ECD=78-PSI/16-PSI/ 257-BBLS/10.09-PPG 10650'STILL DRILLING IN A NICE SAND, LATERALY WE ARE-40-50'AWAY FROM PB1 AND IT WAS FULL OF CHERT??? 16:50 - 17:25 0.58 DRILL N DPRB 10,590.00 PROD1 BUILD LANDED PU 100'THE RIH TO FLOW CHECK WELL ON BOTTOM BEFORE POOH GOOD NO FLOW POOH TO WINDOW 17:25 - 17:35 0.17 DRILL N DPRB 10,590.00 PROD1 PULLED ABOVE WINDOW,SHUT DOWN PUMP TO FLOW CHECK WELL AND OPEN EDC 17:35 - 19:40 2.08 DRILL N DPRB 10,590.00 PROD1 GOOD NO-FLOW,POOH TO SURFACE TO CHASE OUT DRILL CUTTINGS. Printed 10/1/2012 10:52:41AM North America-ALASKA-BP •' .. . Page 21 of 35 Operation Summary Report Common Well Name:C-24 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 9/3/2012 End Date: 9/19/2012 X3-0124Y-C: (2,217,200.00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.. NORDIC 1 •Spud Date/Time:9/5/1982 12.00:OOAM Rig Release: Rig Contractor NORDIC CALISTA UWI:/Lat:070°17'47.296°6 Long 0148°40'08.689'W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 19:40 - 20:00 0.33 DRILL N DPRB 10,590.00 PROD1 RUN BACK IN HOLE TO 300'AND PERFORM FLOWCHECK ON WELL.WELL IS STATIC. 20:00 - 20:20 0.33 DRILL N DPRB 10,590.00 PROD1 PULL TO SURFACE,POP OFF INJECTOR AND ENSURE WELL IS FULL. LAY DOWN BHA#8. 20:20 - 21:00 0.67 DRILL N DPRB 10,590.00 PROD1 MAKE UP BHA#9 WITH HCC-BIT. 21:00 - 21:30 0.50 DRILL N DPRB 10,590.00 PROD1 STAB ON INJECTOR AND PRESSURE-TEST QTS TO 250PSI/5MINS AND 4,000PSI/5MINS. ACHIEVE GOOD TEST. 21:30 - 23:30 2.00 DRILL N DPRB 10,590.00 PROD1 FILL HOLE WITH 3BBLS(INDICATING LOSSES OF 3BBLS/HR WITH WELL BEING STATIC) AND START RIH WITH BHA#9. PVT=174BBLS/IA=56PSI/OA=16 PSI 23:30 - 23:50 0.33 DRILL N DPRB 10,590.00 PROD1 SLOW DOWN TO WHEN RUNNING THROUGH WINDOW AND START LOGGING FOR TIE-IN. NO CORRECTION REQUIRED. 23:50 - 00:00 0.17 DRILL N DPRB 10,590.00 PROD1 COMPLETE RIH. PVT=218BBLS/IA=56PSI/OA=13 PSI 9/13/2012 00:00 - 00:10 0.17 DRILL N DPRB 10,590.00 PROD1 COMPLETE RIH AND TAG UP AT 10,702FT. TAKE SPR'S: PUMP#1: PUMP#2: 2.73 BPM-2,935 PSI-123 SPM2.78 BPM- 3,000 PSI-129 SPM 1.0 BPM-1,575 PSI-45 SPM1.0 BPM-1,560 PSI-44 SPM 0.5 BPM-1,370 PSI-24 SPM0.5 BPM-1,340 PSI-23 SPM 00:10 - 01:25 1.25 DRILL N DPRB 10,590.00 PROD1 PU AND CONDUCT MAD-PASS BETWEEN 10,702-10,295'(BILLET)AT-300FT/HR. 01:25 - 01:40 0.25 DRILL N_ DPRB 10,590.00 PROD1 RUN BACK IN HOLE TO BOTTOM. 01:40 - 03:35 1.92 DRILL N DPRB 10,590.00 PROD1 DRILL AHEAD FROM 10,702'IN MOSTLY CLEAN SANDS WITH ROP=--110 FPH. TOWARDS 10,850'CHERT CONTENT APPEARS TO BE INCREASING AND ROP IS DROPPING SLIGHTLY. WOB= 1.80K LBS AND CIRC PRESSURE= 3,2683 PSI AT 2.80 BPM(FREE SPIN=2,985 PSI AT 2.80 BPM). PVT=165 BBLS, LOSSES ARE-6BBLS/HR. MW IN=8.70 PPG / MW OUT=8.72 PPG / ECD= 10.20 PPG / IAP=85 PSI / OAP=14 PSI. 03:35 - 04:25 0.83 DRILL N DPRB 10,590.00 PROD1 DRILL TO 10,850'AND PERFORM 1ST 150' WIPER TRIP TO WINDOW. PVT AT START OF WIPER=269BBLS, PVT AT END OF WIPER=263BBLS. 04:25 - 06:30 2.08 DRILL N DPRB 10,590.00 PROD1 CONTINUE DRILLING AHEAD FROM 10,850' WITH ROP VARYING BETWEEN 30- 13OFTlHR. SAMPLES SHOW CHERT-CONTENDS OF AS HIGH AS 40%. WOB= 1.80K LBS AND CIRC PRESSURE= 3,283 PSI AT 2.80 BPM(FREE SPIN=2,985 PSI AT 2.80 BPM). PVT=259 BBLS, LOSSES ARE--6BBLS/HR. MW IN=8.70 PPG / MW OUT=8.72 PPG / ECD= 10.20 PPG / IAP=85 PSI / OAP= 14 PSI. Printed 10/1/2012 10.52:41AM r ' ` North America -ALASKA- BP % age 22 of 35 Operation Summary Report rr Common Well Name:C-24 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date.9/3/2012 End Date 9/19/2012 1X3-0124Y-C: (2,217,200.00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No. NORDIC 1 Spud Date/Time:9/5/1982 12.00:OOAM Rig Release: Rig Contractor: NORDIC CALISTA UWI:/Lat:070"17'47.296"6 Long: 0148"40'08.689'W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 06:30 - 08:25 1.92 DRILL N DPRB 10,590.00 PROD1 DRILLING FREE SPIN AT 2.80-BPM/3050-PSI DRILL AHEAD WITH-300?PSI AND.5 3.5K-LBS DHWOB FLOW IN/FLOW OUT=2.82 BPM/2.76 BPM LOSS RATE-3.6 BPH --MW IN/MW OUT=8.73-PPG/8.73-PPG IA/OA/PVT/ECD=95-PSI/23-PSI/ 291-BBLS/10.24-PPG 08:25 - 08:50 0.42 DRILL N DPRB 10,590.00 PROD1 NOT MAKING ANY PROGRESS GEO THINKS WE STARTED DRILLING IN CHERT AT 10880'WHERE THE TOOLFACE STARTED GETTING IRRATIC SAMPLE FROM 10900'SHOWS-35%CHERT 08:50 - 09:35 0.75 DRILL N DPRB 1,0,590.00 PROD1 SHUT DOWN TO FLOW CHECK WELL AT TD BEFORE POOH 09:00 STILL GETTING A PENCIL SIZE STREAM OF-FLOW COMING BACK 09:05 STILL SHOWING A LITTLE FLOW, NOTIFY DRLG SUPT AND SHUT IN WELL AS PER THE STANDING ORDERS AND MONITOR WELL FOR PRESSURE 'COIL PRESSURE =0 PSI WHP=0 PSI 109:35 - 09:45 0.17 DRILL N DPRB 10,590.00 PROD1 WELL HAS BEEN SHUT IN FOR 30 MIN WITH NO INCREASE IN COIL OR WELL HEAD PRESSURE ON ELEC OR MECH GAUGES CALL DRLG SUPT(GREG SARBER)AND WTL (JIM WILLINGHAM)TO UPDATE THEM WITH CURRENT WELL CONDITION 09:45 - 10:55 1.17 DRILL N DPRB 10,590.00 PROD1 DRLG SUPT&WTL ARE GOING TO CONTACT MIKE MILLER WHO HAS STEVE ROSSBERGS DELEGATION TO ALLOW US TO OPEN THE WELL 10:55 - 11:05 0.17 DRILL N DPRB 10,590.00 PROD1 WE HAVE PERMISSION TO OPEN UP TO THE WELL FROM MIKE MILLER. HOLD PJSM TO EXECUTE PLAN FORWARD I,11:05 - 11:35 0.50 DRILL N DPRB 10,590.00 PROD1 OPEN TO THE WELL,NO FLOW AT THE SHAKER. MONITOR WELL FOR FLOW FOR 30 MIN AS PER THE PLAN FORWARD. PVT=268 BBLS 11:35 - 11:55 0.33 DRILL N DPRB 10,590.00 PROD1 30 MIN NO FLOW CHECK IS GOOD,COME ON LINE WITH PUMP TO ESTABLISH RETURNS WELL TOOK 6.2 BBLS TO ESTABLISH RETURNS.WE ARE LOOSING-0.15 BPM WHILE PUMPING CTDS IS LOCKED UP, REBOOT PRIMARY COMPUTER 11:55 - 12:35 0.67 DRILL N DPRB 10,590.00 PROD1 COMPUTER RESTARTED AND CTDS IS UP AND RUNNING.PUMP 20 BBL HI-VIS PILL 12:35 - 12:45 0.17 DRILL N DPRB 10,590.00 PROD1 HI-VIS IS OUT AND WE ARE ABOVE THE WINDOW SHUT DOWN PUMP TO FLOW CHECK THE WELL PVT=270 BBLS OPEN EDC 12:45 - 14:20 1.58 DRILL N DPRB 10,590.00 PROD1 GOOD NO FLOW BRING PUMP BACK ONLINE AT MAX RATE AND CHASE PILL OOH HI-VIS PILL PRODUCED-15%MORE CUTTINGS THAN NORMAL 14:20 - 15:00 0.67 DRILL N DPRB 10,590.00 PROD1 PJSM TO PULL BHA AND SWAP OUT BITS Printed 10/1/2012 10 52:41AM North America -ALASKA- BP 35 Operation Summary Report Common Well Name:C-24 1AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:9/3/2012 End Date:9/19/2012 X3-0124Y-C: (2,217,200 00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.. NORDIC 1 Spud Date/Time:9/5/1982 12:00:00AM Rig Release: Rig Contractor:NORDIC CALISTA UWI:/Lat:070°17'47.296"6 Long: 0148°4008.689"W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To His Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 15:00 - 15:10 0.17 DRILL N DPRB 10,590.00 PROD1 OOH FLOW CHECK WELL 15:10 - 15:45 0.58 DRILL N DPRB 10,590.00 PROD1 GOOD NO FLOW CHECK,TAG UP AND REMOVE INJECTOR 15:45 - 16:20 0.58 DRILL N DPRB 10,590.00 PROD1 MU BHA#10 16:20 - 18:30 2.17 DRILL N DPRB 10,590.00 PROD1 BHA MU,STAB ON,TEST QTS AND RIH 18:30 - 18:50 0.33 DRILL N DPRB 10,590.00 PROD1 RN TO 10,160'.STOP PUMPS AND CLOSE EDC.ALLOW SLB TO CONDUCT CHANGE-OUT. 18:50 - 19:30 0.67 DRILL N DPRB 10,590.00 PROD1 ****CONDUCTED EXTENDED KICK WHILE TRIPPING DRILL**** CTDS-DRILLER ANNOUNCED THAT WELL WAS FLOWING WHEN CLOSING EDC.SHUT IN WELL AND LINED UP TO CIRCULATE OUT INFLUX.OPENED UP HCR AND STARTED PUMP.ALLOWED SHUT-IN PRESSURE TO RISE TO 300PSI,THEN OPENED CHOKE. PRACTICED MANIPULATING CHOKE TO DIFFERENT PUMP RATES HELD AAR AND DISCUSSED HOW TO BRING MUD PUMPS ONLINE AND HOW TO MAINTAIN CONSTANT BHP WHEN APPLYING DRILLER'S METHOD. 19:30 - 19:45 0.25 DRILL N DPRB 10,590.00 PROD1 LOG TIE-IN TO RA-TAG AT 100FT/HR.LOG TO 10,228'-NO CORRECTION TO BE APPLIED. 19:45 - 20:20 0.58 DRILL N DPRB 10,590.00 PROD1 CONTINUE RIH TO 10,981'. 20:20 - 23:00 2.67 DRILL N DPRB 10,590.00 PROD1 DRILL AHEAD FROM 10,981'TO 11,042'. NOTICE FAIRLY CONSISTENT BUT SLOW DRILLING-PROGRESS WITH AROUND 30-40FT/HR. CIRC P=3,250 PSI(FREE SPIN=3150 PSI)/ WOB=3.15 K LBS/ECD=10.26 PPG MM IN=2.77 BPM/MM OUT=2.71 BPM MM IN=8.74 PPG/MM OUT=8.75 PPG IA=90 PSI/OA=18 PSI START WITH PVT=235 BBLS,END WITH PVT =226 BBLS 11,00U-SAMPLE SHOWS A SANDSTONE WITH A CHERT-CONTENT CONSIDERABLY LOWER (<10%)THAN PREVIOUS SAMPLE AT 10,050'. MEANWHILE GAMMA-RAY INDICATES A SMALL SHALE PACKAGE BETWEEN 10,980'- 10,995'. 23:00 - 00:00 1.00 DRILL N DPRB 10,590.00 PROD1 DRILL AHEAD TO 11,056'AT MIDNIGHT.SAME SLOW DRILLING THAN BEFORE WITH ROP'S OF—30FT/HR.ALSO NOTICE SOME FEW STALLS. GEO REPORTS THAT THE 11,05U-SAMPLE SHOWS TRACES OF MHO-OIL AND AGAIN CHERT-CONTENT OF<10%.GAMMA RAY INCREASES TO—100API INDICATING CLAYSTONE/SHALY SAND. 9/14/2012 00:00 - 01:15 1.25 DRILL N DPRB 10,590.00 PROD1 DRILL AHEAD FROM 11,056'WITH ROP <30FT/HR.VERY SLOW AND HARD DRILLING. CIRC P=3,457PSI/WOB=3 50 K LBS/ECD= 10.30 PPG MM IN=2 80 BPM/MM OUT=2.71 BPM MM IN=8.75 PPG/MM OUT=869 PPG IA= 105 PSI!OA=24 PSI PVT=217BBLS Printed 10/1/2012 10:52:41AM 40' North America-ALASKA- BP ge 24 of 35 Operation Summary Report Common Well Name.C-24 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:9/3/2012 End Date:9/19/2012 X3-0124Y-C: (2,217,200.00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.. NORDIC 1 Spud Date/Time:9/5/1982 12:00:OOAM Rig Release: Rig Contractor: NORDIC CALISTA UWI:/Lat:070°17'47.296"6 Long 0148°40'08.689'W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 01:15 - 02:30 1.25 DRILL N DPRB 10,590.00 PROD1 VERY SLOW DRILLING WITH MANY STALLS. DECIDE TO PUMP HIGH VISC PILL(17BBLS) FOR HOLE-CLEANING,FOLLOWED BY 7OBBLS NEW 8.7PPG MUD STRAIGHT OFF THE TRUCK. PVT=290BBLS. 02:30 - 03:00 0.50 DRILL N DPRB 10,590.00 PROD1 PILL COMES BACK TO SURFACE WITH NO SIGNIFICANT AMOUNT OF CUTTINGS COMING OVER THE SHAKER.ALSO THE NEW MUD DOES NOT IMPROVE DRILLING. DOWNHOLE VIBRATIONS REMAIN LOW(<0), THUS INDICATING THAT MOTOR IS STILL IN GOOD SHAPE. 03:00 - 04:00 1.00 DRILL N DPRB 10,590.00 PROD1 MANAGE TO DRILL AHEAD AT LOW ROP (-20FT/HR)AT REDUCED PUMP RATE (2.58BPM)ALONG WITH INCREASED WOB (>4K LBS). 04:00 - 04:45 0.75 DRILL N DPRB :10,590.00 PROD1 AT 11,103'ENCOUNTER LOSS ZONE.SEE BRIEFLY LOSSES OF 1BPM WHICH HOWEVER QUICKLY REDUCE TO 0.5BPM AT NORMAL DRILLING PUMPRATE(MM IN= 2.76BPM/MM OUT 2.15BPM). 04:45 - 05:20 0.58 DRILL N , DPRB 10,590.00 PROD1 TRY DRILLING AHEAD FROM 11,103'BUT EFFECTIVELY UNABLE TO MAKE PROGRESS. DECIDE TO POOH FROM 11,105.5'TO CHECK BIT/MOTOR.SEE STABLE 0.3BPM (18BBLS/HR)LOSSES. 05:20 - 05:35 0.25 DRILL N DPRB-__10,590.00PROD1 FLOWCHECK WELL-WELL STATIC.OPEN EDC. 05:35 - 07:10 1.58 DRILL N DPRB 10,590.00 PROD1 CONTINUE POOH PUMPING 3.2BPM AT 0.3BPM LOSSES. 07:10 - 07:50 0.67 DRILL N DPRB' 10,590.00 PROD1 PJSM FOR BHA SWAP,JETTING STACK, FUNCTION TEST AND BHA MU 07:50 - 08:00 0.17 DRILL N DPRB 10,590.00 PROD1 FLOW CHECK WELL 08:00 - 08:40 0.67 DRILL N DPRB 10,590.00 PROD1 GOOD NO FLOW,REMOVE INJECTOR AND CHECK BHA BHA HAS CLAY ALL OVER IT AND THE BIT IS BALLED UP,BIT GRADE IS 1-1 08:40 - 09:05 0.42 DRILL N DPRB 10,590.00 PROD1 JET STACK PRIOR TO FUNCTION TEST 09:05 - 09:20 0.25 DRILL N DPRB 10,590.00 PROD1 FUNCTION TEST BOPS FROM THE FLOOR PANEL 09:20 - 09:40 0.33 DRILL N DPRB 10,590.00 PROD1 MU BHA#11 WITH SAME MOTOR&BIT 09:40 - 12:10 2.50 DRILL N DPRB 10,590.00 PROD1 MU INJECTOR TO BHA,TEST QTS AND RIH 12:10 - 12:25 0.25 DRILL N DPRB 10,590.00 PROD1 TIE IN AT 10200' 12:25 - 13:00 0.58 DRILL N DPRB 10,590.00 PROD1 NO CORRECTION RIH TO TD 13:00 - 13:20 0.33 DRILL N DPRB 10,590.00 PROD1 OBTAIN SPR'S 13:20 - 16:30 3.17 DRILL N DPRB 10,590.00 PROD1 BACK ON BOTTOM DRILLING FREE SPIN AT 2.70-BPM/3090-PSI DRILL AHEAD WITH 50-100?PSI AND.2- 1.5K-LBS DHWOB MW IN/MW OUT=8.75-PPG/8.70-PPG IA/OA/PVT/ECD=79-PSI/16-PSI/ 229-BBLS/10.19-PPG Printed 10/1/2012 10.52:41AM • North America -ALASKA- BP40,H,„2„ ,,,„,,,, Page 25 of 35 Q•eraionSu - - • • Common Well Name:C-24 I AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:9/3/2012 End Date: 9/19/2012 X3-0124Y-C: (2,217,200 00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.:NORDIC 1 Spud Date/Time. 9/5/1982 12:00:00AM Rig Release: Rig Contractor NORDIC CALISTA UWI:/Lat:070°17'47.296"6 Long: 0148°40'08.689'W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 16:30 - 17:30 1.00 DRILL N DPRB 10,590.00 PROD1 SLOW ROP NOT TAKING MUCH TO STALL. TRY DRILLING AT HIGHER RATE AND HIGHER ROP IS WORKING A LITTLE BETTER.GEO SAYS WE ARE IN A 70%SANDSTONE FORMATION. PICK UP WEIGHTS ARE GETTING HIGHER AFTER STALLS 70-80K --AND 12-15K AT THE BIT. 17:30 - 17:50 0.33 DRILL N DPRB 10,590.00 PROD1 PULL ANOTHER SAMPLE TO CONFIRM FORMATION 10%CLAYSTONE AND 5%CHERT AND THE REST IS SANDSTONE FLOW CHECK WELL AND POOH,THIS COMBINATION IS NOT WORKING. MOTOR SEEMS TO BE STRONG WITH HARD STALLS MAYBE THE BITS TO AGRESSIVE??? POOH FOR STANDARD 2-7/8"EXTREME MOTOR AND GAUGE BIT PVT=327 BBLS 17:50 - 18:30 0.67 DRILL N DPRB 10,59010 PROD1 GOOD NO-FLOW CHECK POOH TO WINDOW. 18:30 - 19:00 0.50 DRILL _N DPRB 10,590.00 PROD1 FLOW CHECK WELL ABOVE WINDOW.PVT= 318 BBLS. ****CONDUCT SPILL DRILL**** 35 SEC.RESPONSE TIME 19:00 - 21:30 2.50 DRILL N DPRB 10,590.00 PROD1 POOH WITH BHA#11.PVT=324BBLS. 21:30 - 21:40 0.17 DRILL N DPRB 10,59{0.00 PROD1 PULL TO SURFACE(200')AND FLOW CHECK WELL BEFORE LD BHA.MEANWHILE HOLD PJSM FOR LAYING DOWN BHA.PVT=251 BBLS. 21:40 - 22:00 0.33 DRILL N DPRB 1-0,560.00 PROD1 POP OFF INJECTOR AND LAY DOWN BHA#11. GRADE BIT AS 1-1-WT-A-X-1-NO-BHA. FILL WELL WITH 4.2BBLS. 22:00 - 23:20 1.33 DRILL N SFAL 10,590.00 PROD1 HOLD PJSM AND CONDUCT WORK ON REEL (DRILLER-SIDE BUSHING WHICH HOLDS THE AXIAL PIN APPEARED TO HAVE SHIFTED AND WAS MOVED INTO PLACE AGAIN AS A PREVENTIVE MEASURE). FILL WELL WITH 4.4BBLS. 23:20 - 00:00 0.67 DRILL N DPRB 10,590.00 PROD1 HOLD PJSM AND COMMENCE MAKING UP BHA#12 WITH 3.75"GAUGED BIT AND 2-7/8" EXTREME HIGH-SPEED MOTOR. 9/15/2012 00:00 - 00:15 0.25 DRILL N DPRB 10,590.00 PROD1 COMPLETE MAKING UP BHA#12. 00:15 - 00:45 0.50 DRILL N DPRB 10,590.00 PROD1 STAB ON INJECTOR AND PRESSURE-TEST QTS TO 250PS1/5MINS AND 3,500PSI/5MINS. 00:45 - 02:45 2.00 DRILL N DPRB 10,590.00 PROD1 COMMENCE RIFs.RUN TO 10,125'AND CLOSE EDC. 02:45 - 03:05 0.33 DRILL N DPRB 10,590.00 PROD1 RUN THROUGH WINDOW AND START LOGGING FOR TIE-IN ONWARDS FORM 10,200'. NO CORRECTION NEEDED TO BE APPLIED. 03:05 - 03:45 0.67 DRILL N DPRB 10,590.00 PROD1 CONTINUE RIH AND TAKE SCR'S: PUMP#1. PUMP#2: 2.4 BPM-2,930 PSI- 116 SPM2.5 BPM-2,975 PSI-71 SPM 1.0 BPM-1,700 PSI-42 SPM1.0 BPM-1,720 PSI-44 SPM 0.5 BPM-1,500 PSI-22 SPMO 5 BPM-1,500 PSI-20 SPM Printed 10/1/2012 10:52:41AM z .' North America -ALASKA- BP • Page 26 of 35 O•eration Summary Report Common Well Name:C-24 AFE No Event Type:RE-ENTER-ONSHORE(RON) Start Date.9/3/2012 End Date: 9/19/2012 X3-0124Y-C: (2,217,200.00) Project:Prudhoe Bay Site: PB C Pad Rig Name/No.: NORDIC 1 Spud Date/Time:9/5/1982 12.00:00AM Rig Release: Rig Contractor:NORDIC CALISTA UWI:/Lat:070°17'47.296"6 Long: 0148°40'08.689'W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 03:45 - 05:00 1.25 DRILL N DPRB 10,590.00 PROD1 CONTINUE DRILLING AHEAD ONWARDS FROM 11,118.80'. NEW MOTOR-BIT COMBINATION(GAUGED BIT&2-7/8" EXTREME HIGH-SPEED MOTOR)DRILLS AHEAD WITHOUT ANY PROBLEM; NO STALL, NO VIBRATION, NO PROBLEM. -ROP=50 FPH,WOB= 1.05K LBS, CIRC PRESSURE=3,215 PSI AT 2.62 BPM(FREE SPIN=2,992 PSI AT 2.6 BPM). MW IN=8.75 PPG,MW OUT=8.72 PPG, ECD =10.24 PPG,PVT=282 BBLS IAP=73 PSI / OAP=12 PSI 05:00 - 06:45 1.75 DRILL N DPRB 10,590.00 PROD1 CONTINUE DRILLING AHEAD WITH VERY HIGH ROP OF-150FT/HR.SEE SMALL XY-VIBRATION OR"2" ROP= 144 FPH,WOB=2.18K LBS, CIRC PRESSURE=3,479 PSI AT 2.70 BPM. MW IN=8.77 PPG, MW OUT=8.76 PPG, ECD =10.27 PPG,PVT=273 BBLS IAP=88 PSI / OAP=16 PSI 06:45 - 06 50 0.08 DRILL -N DPRB 10,590.00 PROD1 OBTAIN SPR'S BEFORE DRILLING AND UPDATE KILL SHEET 06:50 - 09:00 2.17 DRILL N DPRB 10,590.00 PROD1 FREE SPIN AT 2.57-BPM/2950-PSI DRILL AHEAD WITH 50-200?PSI ROP=70-150 FPH AND.5-3.0K-LBS DHWOB MW IN/MW OUT=8.76-PPG/8.74-PPG IA/OA/PVT/ECD=90-PSI/20-PSI/ 261-BBLS/10.27-PPG 05:15 AT 11220'RESISTIVITY CHANGED AND WE GOT PUSHED DOWN-1.5-2'TVD 09:00 - 10:40 1.67 DRILL N DPRB 10,590.00 PROD1 WIPER TO WINDOW PVT=249 BBLS ROP SLOWLY DECREASING IN THIS LAST 150' 10:40 - 11:15 0.58 DRILL N DPRB 10,590.00 PROD1 FREE SPIN AT 2.67-BPM/2990-PSI DRILL AHEAD WITH 50-200?PSI V ROP=60-150 FPH AND.5-3.5K-LBS DHWOB IN&OUT RATES=2.70/2.69 BPM MW IN/MW OUT=8.80-PPG/8.77-PPG IA/OA/PVT/ECD=90-PSI/20-PSI/ 239-BBLS/10.27-PPG LOST 10 BBLS DURING SHORT TRIP SAMPLES FROM 11200'TO 11400' HAVE 35-40%CHERT 11:15 - 11:45 0.50 DRILL N DPRB 10,590.00 PROD1 ADDING MORE MUD TO PITS 11:45 - 14:40 2.92 DRILL N DPRB 10,590.00 PROD1 LOOKS LIKE OUR BIT MIGHT BE DONE,DRILL A LITTLE MORE TO GET GAMMA DOWN TO WHERE THE ROP DROPPED OFF AND SEE IF WE ARE STILL IN SAND. FLAG A SAMPLE AT 11430'AS WELL TO VERIFY GEO SAYS WE HAVE 45%CHERT IN 11430'SAMPLE.GAMMA CLIMBING BUT ROP IS PICKING UP, LOOKS LIKE WE DRILLED INTO A SHALE AND WE ARE COMING OUT OF IT AT-11470' 14:40 - 15:45 1.08 DRILL N DPRB 10,590.00 PROD1 WIPER TO WINDOW AND TIE IN PVT=309 15:45 - 15:50 0.08 DRILL N DPRB 10,590.00 PROD1 TIE IN Printed 10/1/2012 10:52:41AM North America -ALASKA- BP • S " Page 27 of 35 Operation Summary Report Common Well Name. C-24 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 9/3/2012 End Date:9/19/2012 X3-0124Y-C: (2,217,200 00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.. NORDIC 1 Spud Date/Time:9/5/1982 12:00:00AM Rig Release: Rig Contractor: NORDIC CALISTA UWI:/Lat:070°17'47.296"6 Long: 0148°40'08.689'W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 15:50 - 16:50 1.00 DRILL N DPRB 10,590.00 PROD1 CORRECT DEPTH+5.5'AND RIH 1 MOTOR DROPPED OFF LINE WHILE TRIPPING BACK IN THE HOLE DURING WIPER.WE DID NOT LOOSE RIG POWER THE SCR JUST SHIFTED THE LOAD TO 1 MOTOR AND WE HAD TO RESYNC TO BRING THE OTHER ON BACK ONLINE.NO FAULT CODES ON THE GENERATOR THE ONLY ERROR WAS ON THE PECO DISPLAY FOR FREQUENCY ERROR.MOTOR MAN BROUGHT THE OTHER GEN BACK ONLINE AND TEH POWER CONSUMPTION LOOKS NORMAL 16:50 - 17:30 0.67 DRILL N DPRB 10,590.00 PROD1 BACK ON BOTTOM FREE SPIN AT 2.78-BPM/3200-PSI DRILL AHEAD WITH 50-300?PSI ROP=50-60 FPH AND.5-2.5K-LBS DHWOB IN&OUT RATES=2.78/2.75 BPM MW IN/MW OUT=8.78-PPG/8.76-PPG IA/OA/PVT/ECD=90-PSI/20-PSI/ 239-BBLS/10.27-PPG 17:30 - 18:00 0.50 DRILL P PROD1 DRILL AHEAD FROM 10,590'. 18:00 - 19:00 1.00 DRILL P PROD1 CONTINUE DRILLING AHEAD WITH ROP=70 FPH,WOB=2.3K LBS AND CIRC PRESSURE= 3,365 PSI AT 2.60 BPM. PVT=327 BBLS. MW IN=8.80 PPG / MW OUT=8.81 PPG / ECD=10.27 PPG IAP=137 PSI / OAP=34 PSI 19:00 - 19:30 0.50 DRILL P PROD1 CALL CHUCK SCHEVE(AOGCC)AND ASK FOR PERMISSION TO PERFORM BI-WEEKLY BOP FUNCTION&PRESSURE-TEST EARLY THAN SCHEDULED(I.E. NEXT TRIP OUT OF HOLE).MR.SCHEVE GAVE PERMISSION TO PROCEED AS REQUESTED AND ALSO WAIVED WITNESSING THE TEST. DRILL AHEAD WITH GOOD ROP OF-50- 60FT/HR. 19:30 - 21:30 2.00 DRILL P PROD1 CONDUCT 1ST 150'WIPER TRIP TO BILLET. PVT=323BBLS. 21:30 - 22:00 0.50 DRILL P PROD1 BACK TO BOTTOM FOLLOWING WIPER AND CONTINUE DRILLING AHEAD. 22:00 - 22:50 0.83 DRILL P PROD1 AROUND 11,730 NOTICE A DROP IN ROP FROM-60FT/HR DOWN TO MORE OR LESS OFT/HR. DO NOT,HOWEVER, NOTICE ANY STALLS(LAST STALL SEEN WAS AT 11,700' AROUND 21:30HRS). ARE WE DRILLING SHALE?HAVING A BALLED BIT?OR WORN BIT? 22:50 - 23:10 0.33 DRILL P PROD1 SET BREAK AND TRY TO"UNBALL"BIT. NOTICE HOW BIT IS SLOWLY DRILLING OF WEIGHT -4.4K LBS / -2 5K LBS / -1.4K LBS / 1.8K LBS / 4.8K LBS. AT 4 8K LBS NOTICE ROP COMING BACK WITH 15-20FT/HR. Printed 10/1/2012 10.52.41AM North America -ALASKA- BP �� age 2s of 35 O•eration Summary Report 40.0,444,4 Common Well Name:C-24 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:9/3/2012 End Date:9/19/2012 X3-0124Y-C: (2,217,200.00) Project:Prudhoe Bay Site: PB C Pad Rig Name/No.: NORDIC 1 • Spud Date/Time:9/5/1982 12:00:00AM Rig Release: Rig Contractor:NORDIC CALISTA UWI:/Lat:070°17'47.296"6 Long: 0148°40'08.689'W Active Datum:ORIG KELLY BUSHING©71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 23:10 - 23:35 0.42 DRILL P PROD1 DRILLING AT 10-20 FT/HR AND 1.5-3.0K LBS DHWOB 3,329PSI CIRC PRESSURE(FREE SPIN:3,100 PSI AT 2.67 BPM) MM IN&OUT RATES=2.65/2.58 BPM MM IN&MW OUT PPG=8.81 PPG/8.77 PPG IA/OA/PVT/ECD= 151 PSI/44 PSI/304 BBLS/10.40 PPG 23:35 - 00:00 0.42 DRILL P PROD1 HIT FAULT AT 11,744'.DRILL AHEAD AT ROP OF<10FT/HR. IN(BPM)OUT(BPM)LOSSES(BBLS/HR) 23:352.700.5132 23:402.630.8110 23:422.501.278 23:452.621.0992 23:502.561.2081 23:552.551.327411,747.5' 00:002.541.476411,748.2' 9/16/2012 00:00 - 02:00 2.00 DRILL P PROD1 IN(BPM)OUT(BPM)LOSSES(BBLS/HR) 00:002.541.476411,748.2' 00:202.561.585911,750' GEO CALLS THAT THE 11,750'-SAMPLE SHOWS AGAIN MORE CHERT(-20%). 00:252.531.605611,751' 00:302.551.685211,752' 00:402.551.844211,754' 00:502.551.913811,758' 01:002.551.774711,762' ROP IS SLOWLY IMPROVING TO—20FT/HR. 01:102.571.814511,767' 01:202.591.804711,771' 01:302.531.675111,776' NEW MUD COMING OFF THE TRUCK IS COMING OUT OF THE BIT. ROP IS FURTHER SLOWLY IMPROVING TO —30FT/HR. ✓ 01:402.561.854311,782' 01:502.531.864011,795' SEE ROP OF—88FT/HR. 02:00 - 02:50 0.83 DRILL P PROD1 02:002.461.784111,811' STOP TAKING MUD OFF THE TRUCK(TOOK OFF 150BBLS).TO FURTEHR HEAL UP LOSSES,MIX UP AND PUMP AWAY 37BBLS HIGH VIS PILL. 02:202.411.773811,827' 02:402.421.803711,846' HIGH VIS PILL IS EXITING THE BIT. 02:50 - 05:00 2.17 DRILL P PROD1 CONDUCT 2ND 150'WIPER TRIP TO BILLET. REDUCE PUMP RATE DOWN TO 1.2BPM WHEN PULLING ACROSS FAULT AT 11,744'. PVT=276BBLS.HIGH VIS PILL DOESN'T SEEM TO HAVE REDCUED LOSSES SIGNIFICANTLY. OBSERVE STEADY 45BBLS/HR LOSSES THROUGHOUT THE WIPER-TRIP. 05:00 - 05:50 0.83 DRILL P PROD1 BACK TO DEPTH,DRILLING AHEAD WITH ROP OF 40-50FT/HR. 05:002.652.003911,850' PVT=271 BBLS PLUS 290BBLS ON TRUCK. Printed 10/1/2012 10:52:41AM • North America-ALASKA- BP • e , u 9 of 35 Operation Summary Report Common Well Name:C-24 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date:9/3/2012 End Date: 9/19/2012 X3-0124Y-C: (2,217,200 00) Project: Prudhoe Bay Site: PB C Pad Rig Name/No.: NORDIC 1 Spud Date/Time:9/5/1982 12 00:OOAM Rig Release: Rig Contractor: NORDIC CALISTA UWI:/Lat 070°17'47.296"6 Long. 0148°40'08.689"W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 05:50 - 06:30 0.67 DRILL P PROD1 START TO SEE SOME"RATTY"DRILLING. FOR THE FIRST TIME WITH THIS BHA, OBSERVE STALLS AS WELL AS 20K-OVERPULLS TO-60K LBS ON CT WEIGHT INDICATOR WHEN PICKING UP. PVT=248BBLS, LOSSES=-40BBLS/HR. _ 06:30 - 07:00 0.50 DRILL P PROD1 `CHANGE OUT 07:00 - 08:20 1.33 DRILL N DFAL 11,880.00 PROD1 DRILLING CONDITIONS,VERY EAST TO STALL WITH VERY LITTLE WOB.LOSS RATE WHILE DRILLING IS-42 BPH. PUH THEN RIH TO CONTINUE DRILLING. HAD 2 PRESSURE SPIKES WHILE RIH WITH NO WOB,CHECK SHAKER FOR RUBBER AND THERE ISA LOT OF RUBBER COMING ACROSS THE SHAKER, POOH FOR MOTOR FAILURE 08:20 - 08:25 0.08 DRILL N DFAL. 11,880.00 PROD1 PULLED INTO CASING ABOVE WINDOW, FLOW CHECK WELL 08:25 - 10:32 2.12 DRILL N DFAL 11,880.00 PROD1 GOOD NO FLOW CHECK,ONLINE 2.60 BPM IN 1.75 BPM OUT NOT MOVING,POOH PJSM WHILE POOH TO LD BHA 10:32 - 10:45 0.22 DRILL N DFAL 11,880.00 PROD1 FLOW CHECK WELL AT SURFACE 10:45 - 11:15 0.50____ DRILL N DFAL 11,880.00 PROD1 'GOOD NO FLOW,TAG UP,LD BHA AND PREP FOR TESTING BOPE BIT IS TRASHED BIT GRADE= 7-5-RO-A-X-1/8-BT-PR PICTURES UPLOADED TO OPENWELLS 11:15 - 11:45 0.50 DRILL P PROD1 CLEAR RIG FLOOR TO PREP FOR TESTING BOPE CLOSE MASTER,SSV&SWAB VALVES AND TEST TO BREAK CONTAINMENT FOR INSPECTING BOP RAMS 11:45 - 12:30 0.75 DRILL P PROD1 PT MASTER&SWAB THROUGH WING VALVE AS PER WELL PLAN FOR LEAK TIGHT TESTING PRESSURE RECOREDED ON CTDS SHUT IN PRESSURE,GOOD LTT ON SWAB BLEED OFF PESSURE AND CLOSE SSV, GOOD NO FLOW FROM WING WITH SSV CLOSED 12:30 - 12:45 0.25 DRILL P PROD1 PJSM TO OPEN BOP DOORS 12:45 - 15:30 2.75 DRILL P PROD1 OPEN BOPE TO INSPECT RAMS 15:30 - 16:30 1.00 DRILL P PROD1 FLOOD STACK AND SHELL TEST 16:30 - 18:00 1.50 DRILL P PROD1 PERFORMED ACCUMULATOR DRAWDOWN (2p` v TEST. 17\,°5 \ -STARTING ACCUMULATOR PRESSURE= 1L5 3,100 PSI -FINAL PRESSURE AFTER FUNCTIONING ALL PREVENTERS AND HCR=2,275 PSI -19 SEC TO BUILD 200 PSI,82 SEC TO FULL PRESSURE. -3 NITROGEN BACKUP BOTTLES WITH 2,000 PSI. Printed 10/1/2012 10:52:41AM • • North America -ALASKA-BP ! Page 30 of 35 Qperation Summary Report Common Well Name:C-24 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 9/3/2012 End Date: 9/19/2012 X3-0124Y-C: (2,217,200.00) Project:Prudhoe Bay Site: PB C Pad Rig Name/No.: NORDIC 1 Spud Date/Time.9/5/1982 12 00 00A Rig Release: Rig Contractor:NORDIC CALISTA UWI:/Lat.070°17'47.296"6 Long: 0148°40'08.689'W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 18:00 - 23:30 5.50 DRILL P PROD1 CONDUCT BI-WEEKLY BOPE PRESSURE AND FUNCTION-TEST AS PER NORDIC PROCEDURE,AOGCC REGS&DWOP POLICY. INSTALL 2-3/8 X 3-1/2"TEST JOINT AND PERFORM PRESSURE-TEST TO 250PSI/ 5MINS AND 3,500PSI/5MIN ON FOLLOWING ITEMS: -ANNULAR BAG -#1 RAM-BLIND SHEARS -#2 RAM-2-3/8"COMBIS(2-3/8"TEST JOINT) -#3 RAM-2-3/8"x 3-1/2"VBR(2-3/8"TEST JOINT) • -#4 RAM-2-3/8"COMBIS(2-3/8"TEST JOINT) ALL RAMS CLOSED WITHIN LESS THAN 2SECONDS.ALSO TESTED HCR AND ALL VALVES ON KILL AND CHOKE LINE AS WELL AS KILL AND'CHOKE MANIFOLDS. 23:30 - 00:00 0.50 DRILL P PROD1 WHILE CONTINUING BOPE PRESSURE-TEST, SWAP REEL FROM MUD TO FRESHWATER IN PREPARATION FOR TESTING MANUAL LOCKS.THAT WAY CIRC PRESS IS ONLY 25PS1 AT MIN RATE(COMPARED TO-877PS1 WHEN CIRCULATING MUD AT MIN RATE). 9/17/2012 00:00 - 01:00 1.00 BRILL P PROD1 CONTINUED BOPE PRESSURE-TESTING BY TESTING VBR'S. 01:00 - 01:15 0.25 DRILL- P PROD1 HOLD PJSM BEFORE PICKING UP INJECTOR. 01:15 - 02:00 0.75 DRILL P PROD1 PICK UP INJECTOR,REMOVE DFCV'S AND INSTALL BLANKS.MAKE UP NOZZLE AND STAB ON INJECTOR. 02:00 - 02:30 0.50 DRILL P PROD1 RUN TO TOP OF SWAB-VALVE AND PRESSURE-TEST RISER/INJECTOR/QUICK TEST SUB,THE PACK-OFF'S AND INNER REEL VALVE TO 250PS1/5MIN AND 3,500PSI/ 5MINS.ACHIEVE GOOD STRAIGHT LINE TEST,BLEED DOWN PRESSURE. 02:30 - 04:30 2.00 DRILL P PROD1 PROCEED WITH TESTING MANUAL LOCKS ON LOWER COMBI,VBR'S AND UPPER COMBIS.TEST EACH SET OF RAMS TO 250PSI/5MINS AND 3,500PSI/5MINS (PRESSURE ON KOOMEY-UNIT IS BLED OFF THE MANUALS ARE TESTED).ACHIEVE GOOD THREE TESTS. 04:30 - 05:30 1.00 DRILL P PROD1 BUMP UP COIL AND UNSTAB INJECTOR. CLOSE BLINDSHEARS AND APPLY 250PSI/ 5MINS AND 3,500PSI/5MINS FROM BELOW. ACHIEVE GOOD TEST. BLEED DOWN PRESSURE. 05:30 - 06:30 1.00 DRILL P PROD1 INSTALL DFCV'S IN UQC.INSTALL TEST-PLATE AND TEST DFCV'S TO 250PSI/ 5MINS AND 3,500PS1/5MINS. 06:30 - 08:30 2.00 DRILL P PROD1 MU NOZZLE BHA AND STAB ON WELL,TEST QTS AND DISPLACE COIL TO MUD 08:30 - 08:40 0.17 DRILL P PROD1 PJSM TO OPEN UP TO WELL 08:40 - 08:50 0.17 DRILL P PROD1 OPEN SWAB,SSV AND MASTER TO A CLOSED CHOKE, NO PRESSURE ON ELEC OR MANUAL WH GAUGES Printed 10/1/2012 10:52:41AM North America -ALASKA-BP Operation Summary Report Common Well Name:C-24 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 9/3/2012 End Date:9/19/2012 IX3-0124Y-C: (2,217,200.00) Project:Prudhoe Bay Site: PB C Pad Rig Name/No.: NORDIC 1 Spud Date/Time:9/5/1982 12:00:OOAM Rig Release: Rig Contractor:NORDIC CALISTA UWI:/Lat:070°17'47.296"6 Long: 0148°40'08.689"W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 08:50 - 09:10 0.33 DRILL P PROD1 OPEN WHITEY VALVE ON LUBRICATOR AND WELL IS ON A SLIGHT VAC RIH PUMPING THROUGH NOZZLE TO FLUID PACK THE WELL.STOP RIH ONCE WE GET RETURNS AND CIRC TO ENSURE WE HAVE GOOD COSISTANT MUD RETURNS 09:10 - 11:00 1.83 DRILL N DPRB PROD1 12 BBLS PUMPED AND 107'IN THE HOLE AND WE ARE GETTING LOW LEVEL GAS BACK AT THE SHAKER SHUT IN CHOKE AND SHUT DOWN PUMP TO MONITOR WELL. CALL DRLG SUPT AND ODE ODE IS NOTIFYING WTL AND WE ARE STANDING BY MONITORING THE WELL HOLD PJSM WITH ALL PERSONNEL ON LOCATION TO DISCUSS CURRENT WELL t CONDITION SHUT DOWN ALL WELDING AND ELECTRICAL WORK AND AIR HEATER. PITS ARE TOPPED OFF AND WE HAVE DISCONNECTED THE TRUCK AND MOVED IT AWAY FROM THE RIG WIND DIRECTION IS -NOT FAVORABLE FOR THE SAT CAMP,ALL PERSONNEL HAVE BEEN ASKED TO GO BACK TO THE MAN CAMP AND WE HAVE SHUT DOWN THE POWER TO IT. PAD OPERATOR&BP RADIO HAVE BEEN NOTIFIED TO RESTRICT ACCESS TO THE PAD 11:00 - 11:25 0.42 DRILL N DPRB PROD1 RECEIVED APPROVED OCN FROM TO ODE& WTL TO BULL HEAD KILL THE WELL. HOLD PJSM WITH CREW TO DISCUSS PLAN FORWARD WELL HAS BEEN SHUT IN FOR OVER 2 HRS WITH 0 PSI READING ON 2 GAUGES 11:25 - 11:45 0.33 DRILL N DPRB PROD1 MOVE VAC TRUCKS BACK TO THE RIG TO FILL PITS AFTER BH KILL LINE UP BOTH PUMPS TO KILL LINE AND PULL COIL OOH AND TAG UP 11:45 - 12:40 0.92 DRILL N DPRB PROD1 ONLINE WITH BOTH PUMPS DOWN THE BACKSIDE. STARTING PVT=270 BBLS 20 BBLS AWAY WHP=0 PSI 25 BBLS AWAY STARTING TO SEE WHP 40 BBLS AWAY WHP= 1077 PSI 50 BBLS AWAY WHP= 1080 PSI 100 BBLS AWAY WHP=1066 PSI 150 BBLS AWAY WHP=1073 PSI 180 BBLS AWAY WHP=1080 PSI 200 BBLS AWAY WHP=1088 PSI 235 BBLS AWAY SHUT DOWN PUMPS AND MONITOR WHP 12:40 - 12:55 0.25 DRILL N DPRB PROD1 WHP HAS BLED DOWN TO 0 PSI, LINE UP TO TAKE RETURNS THROUGH THE MM TO THE TIGER TANK FOR NO FLOW CHECK 12:55 - 13:05 0.17 DRILL N DPRB PROD1 FILL PITS DURING FLOW CHECK GOOD NO FLOW CHECK,ONLINE WITH CHARGE PUMP TO FILL THE HOLE CHECKING LOSS RATE PVT= 175 BBLS 13:05 - 13:10 ' 0.08 DRILL N DPRB PROD1 WELL TOOK 5 BBLS TO FILL AFTER A 15 MIN NO FLOW CHECK Printed 10/1/2012 10:52:41AM r' OW North America -ALASKA- BP Page 32 of 35 Operation Summary Report Common Well Name:C-24 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 9/3/2012 End Date: 9/19/2012 X3-0124Y-C: (2,217,200.00) Project:Prudhoe Bay Site: PB C Pad Rig Name/No.:NORDIC 1 Spud Date/Time:9/5/1982 12:00:OOAM Rig Release: Rig Contractor NORDIC CALISTA UWI:/Lat:07001747.296"6 Long: 0148°40'08.689'W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 13:10 - 13:25 0.25 DRILL N DPRB PROD1 PJSM TO REMOVE INJECTOR AND MU DRILLING BHA 13:25 - 13:45 0.33 DRILL N DFAL 11,880.00 PROD1 MU BHA#13 13:45 - 14:00 0.25 DRILL N DFAL 11,880.00 PROD1 STAND BACK BHA AND MU INJECTOR TO THE WELL TO TEST THE PACK OFF AS PER STATE REQUIREMENTS 14:00 - 14:30 0.50 DRILL N DFAL 11,880.00 PROD1 NORDIC CREW CHANGE OUT,CONTINUE HOLE FILL 14:30 - 14:45 0.25 DRILL N DFAL 11,880.00 PROD1 TEST PACK OFF AND CHART TEST BLEED OFF LOW PT TO CHANGE OUT WHITEY VALVE ON TEST LINE OPEN WELL TO ENSURE WELL IS FULL 14:45 - 15:10 0.42 DRILL N DFAL 11;880.00 PROD1 CLOSE SWAB TO TEST PACK OFF 15:10 - 15:25 0.25 DRILL N DFAL 11,880.00 PROD1 HOLD PJSM TO REMOVE INJECTOR AND MU BHA#13 15:25 - 15:45 0.33 DRILL N DIAL 11,880.00 PROD1 REMOVE INJECTOR AND MU BHA 15:45 - 16:05 0.33 DRILL N DFAL 11,880.00 PROD1 PT QTS 16:05 - 16:50 0.75 DRILL _N DFAL 11,880.00 PROD1 RIH 16:50 - 17:20 0.50 DRILL N DFAL 4,000.0.0 PROD1 STOP RIH LOST COMMS TO MWD.MWD&DD CHECKING SURFACE CABLES 17:20 - 17:40 0.33 DRILL N DFAL 4,000.00 PROD1 SURFACE LINES LOOK OK, LOTO REEL TO OPEN J-BOX TO TEST ELINE CONNECTIONS 17:40 - 18:20 0.67 DRILL N DFAL 4,000.00 PROD1 POOH TO CHECK UQC 18:20 - 18:40 0.33 DRILL N DFAL 4,000.00 PROD1 PULL TO 200FT AND FLOWCHECKED WELL. 18:40 - 19:00 0.33 DRILL N DFAL 4,000.00 PROD1 PULL TO SURFACE,POP OFF INJECTOR AND LD BHA#13.CHECK FOR FAULT ON MWD-TOOLS,FIND PINCHED CABLE IN UQC. KEEP HOLE FULL AT 0.7BPM WHILE CONDUCTING REPAIR. 19:00 - 19:20 0.33 DRILL N DFAL 4,000.00 PROD1 MU BHA#14 WITH NEW DSF413M-A7 BIT AND 2-7/8'EXTREME MOTOR.OPEN EDC. 19:20 - 19:45 0.42 DRILL N DFAL 4,000.00 PROD1 STAB ON INJECTOR AND PRESSURE-TEST THE QTS TO 300PSI/5MINS AND 4,000PSI/ 5MINS. PVT=243BBLS. 19:45 - 20:40 0.92 DRILL N DFAL 4,000.00 PROD1 FILL UP WELL WITH 5BBLS AND COMMENCE RIH. RIH AT 88FT/MIN / MM IN- 1.28BPM / MM OUT-1 38BPM / LOSSES-22BBUHR. y. RIH AT 96FT/MIN / MM IN-1.28BPM / MM OUT-1.32BPM / LOSSES-3OBBUHR. 20:40 - 21:40 1.00 DRILL N DFAL 11,880.00 PROD1 CONTINUE RIH. RIH AT 95FT/MIN / MM IN-1.28BPM / MM OUT-1.12BPM / LOSSES-39BBUHR. 21:40 - 22:00 0.33 DRILL N DFAL 11,880.00 PROD1 CLOSE EDC AND HOLD PJSM BEFORE LINING UP TO THE MGS(DISCUSS R&R'S WHEN FLOWING THROUGH MGS,GAS-RETURNS, LOSSES AND WELLBORE INSTABILITY DUE TO CLAYSTONE/SHALES POTENTIALLY FALLING APART). RIH AT OFT/MIN / MM IN-1 28BPM / MM OUT-1.12BPM / LOSSES-39BBUHR. RIH AT OFT/MIN / MM IN-2.31 BPM / MM OUT-1.31 BPM / LOSSES-6OBBUHR. Printed 10/1/2012 10:52 41AM • North America -ALASKA- BP Page 33 of 35 Operation Summary Report - ------- ---- _ - - -_ ----_ ._._..__-----._......- Common Well Name: C-24 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 9/3/2012 End Date:9/19/2012 X3-0124Y-C: (2,217,200.00) Project:Prudhoe Bay Site: PB C Pad Rig Name/No.: NORDIC 1 Spud Date/Time:9/5/1982 12:00:00AM Rig Release: Rig Contractor: NORDIC CALISTA UWI:/Lat:070°17'47.296"6 Long: 0.148°40'08.689"W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 22:00 - 23:00 1.00 DRILL N DFAL 11,880.00 PROD1 TOP UP PITS TO MAX(PVT=335bb1s)AND LINE UP TO MGS.SHUT OFF IGNITION SOURCES AROUND THE RIG AND START RIH. 23:00 - 23:30 0.50 DRILL N DFAL 11,880.00 PROD1 LOG FOR TIE-IN TO RA-TAG DOWN FROM 10,200'AT 100FT/HR.APPLY OFT CORRECTION. RIH AT 2FT/MIN / MM IN-0.70BPM / MM OUT-0.14BPM / LOSSES-34BBUHR. 23:30 - 00:00 0.50 DRILL N DFAL 11,880.00 PROD1 CONTINUE RIH. 23:50-RIH AT 27FT/MIN / MM IN-2.69BPM / MM OUT-1.44BPM / LOSSES-78BBUHR / PVT=313BBLS. 9/18/2012 00:00 - 00:30 0.50 DRILL N DFAL 11,880.00 PROD1 CONTINUE RIH. 00:15-RIH AT 17FT/MIN / MM IN-2.65BPM / MM OUT-1.44BPM / LOSSES-78BBUHR / PVT=262BBLS. NO INDICATION OF GAS. 00:30 - 01:30 1.00 DRILL N DFAL 11,880.00 PROD1 SEE MOTORWORK ONWARDS AT 11,450' (DEPTH AT WHICH 3.75"BIT IN BHA#12 LOST GAUGE?). _LOSS RATE<50%. 00:45-RIH AT 11 FT/MIN / MM IN-2.65BPM / MM OUT-1.44BPM / LOSSES-78BB1/HR / PVT=243BBLS. 01:30 - 02:00 0.50 DRILL P PROD1 REACH BOTTOM.TAKE SPR'S AND CIRCULATE BOTTOMS UP. MM IN-2.57BPM / MM OUT-1.56BPM / LOSSES-61 BBUHR / PVT=322BBLS. 02:00 - 02:15 ' 0.25 DRILL P PROD1 SEE NO INDICATIONS FOR ANY GAS.GO OFF MGS AND DRILL AHEAD FROM 11,880'. ROP=104 FPH,WOB=1.28K LBS AND CIRC PRESSURE=2,754 PSI AT 2.62 BPM(FREE SPIN=2,410 PSI). MM IN=2.62 BPM / MM OUT=1.79 BPM / MW IN=8.68 PPG / MW OUT=8.67 PPG / ECD=9.85 PPG PVT=302 BBLS,LOSSES ARE-50BBLS/HR IAP=43 PSI / OAP=6 PSI 02:15 - 03:00 0.75 DRILL P PROD1 LOSSES ARE CLOSING IN AS WE ARE DRILLING AHEAD. ROP-110FT/HR / MM IN-2.56BPM / MM OUT-2.09BPM / LOSSES-34BBUHR / PVT 282BBLS. REPORTED BHCT=132DEGF AT 11,985'TO SLB CEMENTING. 03:00 - 03:45 0.75 DRILL P PROD1 DRILLING AHEAD.SMOOTH DRILLING AT HIGH ROP AND DID NOT SEE THE FAULT AT 12,000'.GEO REPORT GOOD SANDSTONE IN SAMPLES AND GOOD 10-OHM ROCK. ROP= 132 FPH,WOB= 1.46K LBS AND CIRC PRESSURE=2,791 PSI. MM IN=2.54 BPM / MM OUT= 1.90 BPM / ECD=9.93 PPG PVT=240 BBLS,LOSSES ARE-38BBLS/HR 03:45 - 05:00 1.25 DRILL P PROD1 DRILL TO 12,050FT,THEN PICK UP FOR 1ST 150'WIPER TO BILLET. 05:00 - 06:30 1.50 DRILL P PROD1 RUN BACK IN HOLE FOLLOWING WIPER TRIP. LOSSES=28BBLS/HR. Printed 10/1/2012 10:52:41AM North America -ALASKA- BP Page 34 of 35 Operation Summary Report Common Well Name:C-24 AFE No Event Type: RE-ENTER-ONSHORE(RON) Start Date: 9/3/2012 End Date: 9/19/2012 X3-0124Y-C: (2,217,200.00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.: NORDIC 1 Spud Date/Time:9/5/1982 12:00:OOAM Rig Release: Rig Contractor:NORDIC CALISTA UWI:/Lat:070°17'47.296"6 Long: 0148°40'08.689'W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 06:30 - 07:20 0.83 DRILL P PROD1 ON BOTTOM DRILLING ROP=120-150 FPH,WOB=1.95K LBS AND CIRC PRESSURE=2977 PSI. MM IN=2.57 BPM / MM OUT=1.76 BPM / ECD=9.93 PPG MUD WT IN/OUT=8.71 PPG/8.70 PPG --PVT=240 BBLS,LOSSES ARE-49BBLS/HR 07:20 - 10:15 2.92 DRILL P PROD1 WIPER TO WINDOW PVT=241 BBLS LOSS RATE STILL-50 BPH 10:15 - 10:25 0.17 DRILL P PROD1 OBTAIN SPR'S AND UPDATE WELL KILL SHEET 10:25 - 10:50 0.42 DRILL P PROD1 ON BOTTOM DRILLING ROP= 120-150 FPH,WOB=3.08K LBS AND CIRC PRESSURE=2950 PSI. MM IN=2.58BPM / MM OUT=1.80BPM / ECD=9.90 PPG MUD WT IN/OUT=8.72 PPG/8.70 PPG PVT=262 BBLS,LOSSES ARE-48BBLS/HR 10:50 - 11:15 0.42 DRILL P PROD1 ON BOTTOM DRILLING ROP= 120- 150 FPH,WOB=2.95K LBS AND CIRC PRESSURE=2950 PSI. MM IN=2.58 BPM / MM OUT= 1.80 BPM / ECD=9.99 PPG MUD WT IN/OUT=8.72 PPG/8.70 PPG PVT=260 BBLS, LOSSES ARE-48BBLS/HR 11:15 - 11:30 0.25 DRILL P PROD1 LOST CHARGE PRESSURE AND LOSING RATE,PICK UP HOLE WHILE WORKING TO GET C-PUMP BACK CAN'T BUILD PRESSURE, PRESSURE UP VAC TRUCK TO SUPPLY RIG WITH FLUID 11:30 - 12:10 0.67 DRILL P PROD1 BACK ON BOTTOM DRILLING 12:10 - 13:45 1.58 DRILL P PROD1 WIPER TO WINDOW 13:45 - 13:55 0.17 DRILL P PROD1 TIE IN 13:55 - 15:15 1.33 DRILL P PROD1 CORRECT DEPTH+5',RIH 15:15 - 16:20 1.08 DRILL P PROD1 ON BOTTOM DRILLING FREE SPIN 2798 PSI ROP=150+FPH,WOB=2.21K LBS AND CIRC PRESSURE=3055 PSI. MM IN=2.72 BPM / MM OUT=1.91 BPM / ECD=10.00 PPG MUD WT IN/OUT=8.69 PPG/8.72 PPG PVT=220 BBLS,LOSSES ARE-48BBLS/HR LOADING MORE MUD INTO THE PITs 12415'ROP HAS SLOWED DOWN LIKE A FORMATION CHANGE REQUIRING MORE SURFACE&WOB TO DRILL.PU'S ARE CLEAN 16:20 - 17:00 0.67 DRILL P PROD1 NOT ABLE TO GET WOB AND STACKING WEIGHT,PU FOR 100'WIPER 17:00 - 17:25 0.42 DRILL P PROD1 DRILLED 35'AFTER THAT WIPER THEN STACKED OUT AGAIN.PU AND TRY DRILLING AGAIN 17:25 - 19:00 1.58 DRILL P PROD1 TOWN GEO JUST CALLED TD, POOH TO TIE IN. NO ISSUES ON TRIP TO WINDOW. 19:00 - 20:30 1.50 DRILL P PROD1 LOG TIE-IN WITH+4'CORRECTION. CONTINUE WITH TRIP TO TD. TAG AT 12,468'. PICK UP, RE-TAG AT 12,468'. OBTAIN BOTTOM SHOT SURVEY. LOSSES AT-55 BPH. Printed 10/1/2012 10:52:41AM North America-ALASKA- BPPage 35 of 35 h n q' .v4 O•eration Summary Report Common Well Name:C-24 AFE No Event Type:RE-ENTER-ONSHORE(RON) Start Date:9/3/2012 End Date:9/19/2012 X3-0124Y-C: (2,217,200.00) Project:Prudhoe Bay Site: PB C Pad Rig Name/No.: NORDIC 1 Spud Date/Time 9/5/1982 12:00.00AM Rig Release: Rig Contractor NORDIC CALISTA UWI:/Lat:070°17'47.296"6 Long: 0148°40'08.689'W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Firs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 20:30 - 00:00 3.50 DRILL P PROD1 POH LAYING IN NEW MUD. LOSSES SLOWED TO-48 BPH AFTER PULLING ABOVE 11,200'. PULL INTO WINDOW AND CONDUCT A FLOW CHECK. NO PRESSURES OBSERVED,WELL STILL TAKING FLUID. OPEN EDC AND COME ON WITH PUMPS TO MAX RATE. RETURNS -AFTER 4 BBLS. CONTINUE TO POH TO 9680'; PAINT TD EOP FLAG. CONTINUE TO POH TO '7380'AND PAINT WINDOW EOP FLAG. POH. 9/19/2012 00.00 - 01.00 1.00 DRILL P PROD1 POH TO SURFACE. FLOW CHECK WELL AT SURFACE. NO GAIN OR PRESSURE; AVERAGING 35 BPH LOSSES. PJSM ON LAYING DOWN BHA AND CLEARING RIG FLOOR. DISCUSS WELL CONTROL AND KEEPING HOLE FILL ON DURING BHA HANDLING. 01:00 - 01:30 0.50 DRILL P PROD1 POP OFF,LAY DOWN BHA. 5 BBLS LOSS WHILE BLOWING DOWN BHA. COME ON WITH HOLE FILL AND FILL ACROSS TOP WHILE CLEARING AND CLEANING RIG 'FLOOR. Printed 10/1/2012 10:52:40AM North America- M BP Page 1 of 9; Operation Summary Report Common Well Name:C-24 1AFE No Event Type: COM-ONSHORE(CON) Start Date: 9/19/2012 End Date:9/23/2012 X3-0124Y-C. (1,136,933.00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.:NORDIC 1 Spud Date/Time:9/5/1982 12:00:00AM Rig Release: Rig Contractor NORDIC CALISTA UWI:/Lat:070°17'47.296"6 Long: 0148°40'08.689'W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 9/19/2012 01:30 - 02:00 0.50 CASING P RUNPRD MAKE UP PH6 AND STAB ON. PRESSURE TEST QUICK TEST SUB. 02:00 - 04:15 2.25 CASING P RUNPRD PUMP WITH MUD TO ENSURE HOLE FULL. SWAP OVER TO WATER TO PUMP SLACK FORWARD. DIVERT WATER RETURNS AT SURFACE,CHASE WATER WITH MUD. -RESUME FILLING ACROSS TOP WHILE POPPING OFF AND CONDUCTING E-LINE/ COIL MANAGEMENT 84'OF SLACK RECOVERED. LINE-UP EQUIPMENT TO ATTEMPT PUMPING SLACK AGAIN. STAB ON, PRESSURE TEST QUICK TEST SUB. POP OFF, RECOVER 240OF LINE FOR TOTAL OF 344. 04:15 - 04:45 0.50 CASING P RUNPRD CONDUCT MAINTENANCE ON THE REEL DRIVE PINS 04:45 - 06:15 1.50 CASING ; P RUNPRD CUT OFF KINDLE TUBING CONNECTOR AND RE-HEAD WITH BOT CONNECTOR 06:15 - 06:20 0.08 CASING P RUNPRD SlAB INJECTOR ON THE WELL 06:20 - 06:35 0.25 CASING -N SFAL RUNPRD LINE UP TO PUMP 3/4"BALL TO DRIFT COIL SOMETHING IS WRONG WITH THE SCR'S -AND WE CAN NOT PUMP CLOSE CHOKE 06:35 - 06:45 047 CASING N SFAL RUNPRD CHARGE PUMP IS NOT ABLE TO MOVE FLUID FROM THE PITS PRESSURE UP VAC TRUCK TO FEED WELL FLUID 06:45 - 07:05 0.33 CASING N ,SFAL RUNPRD VAC TRUCK IS ABLE TO PUSH FLUID INTO THE WELL THROUGH THE PUMP 07:05 - 07:20 0.25 CASING P RUNPRD WELL TOOK 8 BBLS TO FILL FROM THE VAC TRUCK SCR'S ARE BACK ON LINE AND WE ARE PUMPING,TOOK 1 BBL FROM PITS AND WE HAVE RETURNS MONITOR FOR A FEW MIN GOOD RETURNS 07:20 - 08:00 0.67 CASING P RUNPRD LOAD 3/4"DRIFT BALL BALL LOADED AND LAUNCHED BALL LANDED ON SEAT,BALL RECOVERED 08:00 - 08:10 0.17 CASING P RUNPRD CLEAR RIG FLOOR TO PREP FOR RUNNING LINER 08:10 - 08:30 0.33 CASING P RUNPRD HOLD PJSM TO SET INJECTOR ON ITS LEGS &BRING BTT LINER EQUIPMENT TO THE FLOOR 08:30 - 09:40 1.17 CASING P RUNPRD RD INJECTOR, BRING LINER EQUIPMENT TO THE FLOOR, MU DRIFT JOINT TO DRIFT FIRST 5 MU'S, RU TONG'S 09:40 - 10:00 0.33 CASING P RUNPRD HOLD PJSM TO MU LINER 10:00 - 12:15 2.25 CASING P RUNPRD MU LINER,PUMPING 0.78 BPM AGAINST A CLOSED CHOKE.FLUID LEVEL IS STAYING IN THE TREE AND OVER FLOWING A LITTLE WITH EACH JOINT RAN BACK TO THE PITS STARTING PVT=202 BBLS 12:15 - 13:15 1.00 CASING P RUNPRD 30 JOINTS RAN FILL PIPE WITH WATER PVT =172 BBLS BASED ON VOL AND PIPE DISPLACEMENT WE HAVE LOST 36.9 BBLS IN 2 HRS 15 MIN Printed 10/1/2012 10:53.21AM iNorth America -ALASKA- BP 7.. . .. yfk.0 M Page 2 of 9 Operation Summary Report Common Well Name:C-24 AFE No Event Type.COM-ONSHORE(CON) Start Date:9/19/2012 End Date:9/23/2012 X3-0124Y-C: (1,136,933 00) Project: Prudhoe Bay Site: PB C Pad Rig Name/No.: NORDIC 1 Spud Date/Time:9/5/1982 12.00:00AM Rig Release: Rig Contractor:NORDIC CALISTA UWI:/Lat:070°17'47.296"6 Long- 0148°40'08.689'W ong0148°40'08.689'W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 13:15 - 16:15 3.00 CASING P RUNPRD RAN THE LAST 23 JOINTS OF 2-7/8", FILL PIPE WHILE SWAPPING OVER TO 3-1/4" PVT=159 BBLS LOST 18.45 BBLS IN 1 HR 16:15 - 17:00 0.75 CASING P RUNPRD ALL LINER RAN,RU HEAD PIN TO FILL LINER WITH MUD 17:00 - 18:00 1.00 CASING P RUNPRD-`PVT GETTING LOW FILL PITS 18:00 - 19:00 1.00 CASING P RUNPRD CLEAR AND CLEAN RIG FLOOR. PJSM ON MAKING UP LINER RUNNING TOOL. 19:00 - 20:15 1.25 CASING P RUNPRD MU LINER RUNNING TOOL ASSEMBLY. STAB ON WITH INJECTOR. PRESSURE TEST QUICK TEST SUB. 20:15 - 22:45 2.50 CASING P RUNPRD ON WITH PUMPS TO FILL HOLE,CONFIRM RETURNS. RIH WITH LINER ASSEMBLY. BOTH FLAGS ON DEPTH. TAG EARLY AT 12,443'. PICK UP,RETRY AND TAG AGAIN. MAKE SEVERAL ATTEMPTS TO BOTTOM, FINALLY POP THROUGH AND TAG BOTTOM 'ON DEPTH AT 12,468'. WELL AVERAGING 48 - 'BPH LOSSES. 22:45 - 00:00 1.25 CASING P RUNPRD .MOVE TO 12,473'WITH 10K DOWN. POSITION -REEL FOR DROPPING 5/8"BALL. DROP BALL, BEGIN PUMPING BALL AROUND. SET BACK DOWN WITH 10K DOWN. BALL ON SEAT, SHEAR AT 4300 PSI. PICK UP TO 12,463' WITH BREAKOVER AT 40K. SET BACK DOWN WITH 10K TO 12,472'. WELL LOSING AVERAGE OF 60 BPH LOSSES 9/20/2012 00:00 - 04:00 4.00 RUNCOM P RUNCMP DISPLACE TO 6%KCL. WELL AVERAGING 72 BPH INITIAL LOSS RATE ON MUD WHILE GETTING KCL DOWN THE COIL. STAGE TRUCKING SUPPORT FOR CEMENT JOB. LOSS RATE SLOWED TO 45 BPH WITH KCL AROUND. CONTINUE CONDITIONING HOLE WHILE STAGING KCL,BIOZAN TRUCKS. 205 BBLS LOST DURING THIS TIME. 04:00 - 06:00 2.00 RUNCOM P RUNCMP KCL ALL THE WAY AROUND. LOSS RATE / CONSISTENT AT.8 BPM/48 BPH WHEN PUMPING AT 1.9 BPM AND 680 PSI. CEMENTERS RIGGED UP. PRESSURE TEST LINES. WAITING ON LAST 6%KCL TRUCK TO ARRIVE ON LOCATION TO BEGIN JOB. 100 BBLS LOST DURING THIS TIME. 06:00 - 07:10 1.17 RUNCOM P RUNCMP CONDUCT CREW CHANGEOUT 07:10 - 07:30 0.33 RUNCOM P RUNCMP ALL CREWS CHANGED OUT,HOLD PJSM FOR CEMENT JOB. 07:30 - 08:00 0.50 RUNCOM P RUNCMP BATCH UP 24 BBLS OF 15.8 PPG CLASS G CEMENT 08:00 - 08:10 0.17 RUNCOM P RUNCMP CMT TO WEIGHT Printed 10/1/2012 10.53:21AM •W'North America-ALASKA- BP • Page 3 of 9 Operation Summary Report Common Well Name:C-24 AFE No Event Type: COM-ONSHORE(CON) Start Date: 9/19/2012 End Date: 9/23/2012 X3-0124Y-C: (1,136,933.00) Project: Prudhoe Bay Site: PB C Pad Rig Name/No.: NORDIC 1 Spud Date/Time:9/5/1982 12:00:OOAM Rig Release: Rig Contractor: NORDIC CALISTA UWI:/Lat:070°17'47.296"6 Long: 0148°40'08.689'W Active Datum:ORIG KELLY BUSHING©71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 08:10 - 10:00 1.83 RUNCOM P RUNCMP START CMT JOB 08:11 CMT VAN ONLINE WITH KCL AT 1.5 BPM AT 853 PSI 08:14 SWAP TO CMT,ZERO IN MM AT 13.5 PPG/2 BPM IN 1.20 BPM OUT 08:26 24 BBLS PUMPED, SHUT DOWN CMT PUMP AND 08:36 ON LINE WITH BIO 08:51 56.4 BBLS AWAY SLOW DOWN PUMP RATE AS TO NOT SLAM SELRT WITH CMT 08:54 60 BBLS AWAY INCREASE RATE TO CATCH CMT 08:56 64 BBLS CAUGHT CMT 09:00 76.6 BBLS AWAY ZERO OUT MM AND TAKE RETURNS TO PIT#3(STARTING VOL IS 47 BBLS) 09:03 SHUT DOWN PUMP(3.2 BBLS ON OUT MM)AND PU 13'TO SIDE EXHAUST 2 BBLS OF 01"1 CMT AND 3 BBLS OF BIO 09:05 PU WT AT 12463'PU TO 12450'THE RIH TO SET 10K DOWN THEN PUMP PEE WEE DART ON SEAT 09:09 PEE WEE DART ON SEAT, PU TO SIDE EXHAUST 09:16 5 BBLS AWAY RIH TO SET DOWN 10K TO LAUNCH LINER WIPER PLUG 09:17 CLOSE BAKER CHOKE AND ZERO IN MM 09:18 SHEAR LINER WIPER PLUG 09:20 PLUG SHEARED AT 3700 PSI, NO RETURNS 09:25 GETTING RETURNS AFTER 8.5 BBLS PUMPED LOSSES STILL AT 0.8 BPM 09:30 16.6 BBLS LINER WIPER PLUG BUMMPED, PRESSURE UP TO 1000 PSI OVER PUMP 8.6 BBLS ON OUT MM 09:32 OPEN BAKER AND BLEED OFF PRESSURE TO CHECK THE FLOATS 09:38 GOOD NO FLOW,PRESSURE UP TO 700 PSI, PU TO PRESSURE LOSS THEN PUMP 5 BBLS CMT BEHIND PIPE=11.8 BBLS 3.2 BBLS FROM THE ZERO WITH CMT AT THE SHOE TO WHEN WE SHUT DOWN TO SIDE EXHAUST 8.6 BBLS FROM THE LAUNCH OF THE LWP TO OUR BUMP. BUMP VOL WAS 16.4 BBLS BUT WE CONTINUED TO HAVE LOSSES _ 10:00 - 12:25 2.42 RUNCOM P RUNCMP PU AND ESTABLISH RETURNS LOSS RATE STILL THE SAME AT 0.8 BPM POOH AS PER WELL PLAN MAINTIANING 0.5 BPM RETURNS 12:25 - 12:35 0.17 RUNCOM P RUNCMP FLOW CHECK 12:35 - 12:50 0.25 RUNCOM P RUNCMP GOOD NO FLOW CHECK, HOLD PJSM TO LD LINER RUINNING BHA WELL TOOK 3 BBLS TO FILL 12:50 - 13:45 0.92 RUNCOM P RUNCMP TAG UP, REMOVE INJECTOR AND LD BHA Printed 10/1/2012 10:53:21AM 4110,0r North America-ALASKA- • * • Page 4 of 9 Operation Summary Report Common Well Name:C-24 AFE No Event Type: COM-ONSHORE(CON) Start Date: 9/19/2012 I End Date: 9/23/2012 X3-0124Y-C- (1,136,933.00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No: NORDIC 1 Spud Date/Time:9/5/1982 12-00-00AM Rig Release: Rig Contractor NORDIC CALISTA UWI:/Lat:070°1747.2966 Long: 014804008.689"W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 13:45 - 15:00 1.25 RUNCOM P RUNCMP BHA 00H AND 5/8"BALL RECOVERED PREP FLOOR TO MU CLEAN OUT BHA LOAD MEM LOG TOOLS ON RIG 15:00 - 15:20 0.33 RUNCOM P RUNCMP PJSM TO MU LOGGING CLEAN OUT BHA 15:20 - 16:20 1.00 RUNCOM P RUNCMP MU BHA#16 MAINTAINING HOLE FILL 16:20 - 17:00 0.67 RUNCOM P RUNCMP -1/3 OF CSH RAN,RU HEAD PIN AND CIRC LOOKS LIKE THE BHA MIGHT BE PLUGGED WITH SCALE 17:00 - 18:30 1.50 RUNCOM N SFAL RUNCMP SEVERAL ATTEMPTS TO CLEAR THE BHA BELOW THE SHEAR PRESSURE ON THE CIRC SUB FAILED PITS ARE GETTING LOW AND WE NEED TO BRING FLUID ON BEFORE THE NIGHT CREW ARRIVES FOR CHANGE OUT PREP RIG TO CONTINUE OPS WITH PULLING BHA OOH 18 30 - 19:30 1.00 RUNCOM N SFAL RUNCMP CREW CHANGEOUT COMPLETE. PREP FLOOR FOR LAYDOWN. PJSM ON LAYING DOWN CURRENT BHA. RECEIVED 'CONFIRMATION FROM TOWN THAT LINER LAP TEST NOR LEAK-OFF TEST WILL BE CONDUCTED DUE TO LOSSES OF FLUID ON WELL. I 19:30 - 20:30 1.00 RUNCOM N SFAL RUNCMP LAY DOWN BHA 20:30 - 21:30 1.00 RUNCOM N SFAL RUNCMP INSPECT COMPONENTS. DEBRIS ON TOP OF LOGGING CARRIER. CLEAN OUT DEBRIS. MU HEAD PIN AND PUMP THROUGH CARRIER, MOTOR AND MILL. EVERYTHING OPERABLE. 21:30 - 23:00 1.50 RUNCOM N SFAL RUNCMP MU TWO JOINTS OF WORK STRING TO LOWER PORTION OF BHA. CONDUCT KICK DRILL WHILE HANDLING BHA WITH NEW ROUSTABOUT ON FLOOR. SIMULATE MOTORMAN DOWN TO ENSURE PERSONNEL HAVE TO CONDUCT NEXT HIGHER DUTIES CREW RESPONSE TO CLOSE IN WELL WITH RAMS ON SAFETY JOINT. 23:00 - 00:00 1.00 RUNCOM P RUNCMP MU 31 STANDS TO LOGGING AND CLEANOUT BHA. STAND 32 HAS SIGNIFICANT AMOUNTS OF SCALE. STAND BACK AND USE STRING OUT OF PIPE SHED. 9/21/2012 00:00 - 03:00 3.00 EVAL P OTHCMP MU LOGGING AND CLEANOUT BHA WHILE FILLING ACROSS THE TOP WITH KCL ENTIRE TIME 03:00 - 04:45 1.75 EVAL P OTHCMP CORRELATE DEPTH WITH LOGGING CREW. RIH WITH BHA. 04:45 - 06:40 1.92 EVAL P OTHCMP ON DEPTH AT 9400'. BEGIN LOGGING DOWN AT 30 FPM. 06:40 - 07:45 1.08 EVAL P OTHCMP TAG, PU TO CONFIRM AND TAGGED AT SAME DEPTH WITH MOTOR WORK PUMP PERF PILL WITH CLEAN KCL BEHIND NEED TO SHUFFLE SOME FLUID AROUND BEFORE POOH 07:45 - 08:30 0.75 EVAL P OTHCMP POOH LOGGING MAINTAINING RETURNS STILL LOOSING 0.4 BBLS 08:30 - 08:45 0.25 EVAL P OTHCMP STOP TO PAINT FLAG AT 9842'OR 7100'EOP FLAG Printed 10/1/2012 10:53-21AM North America -ALASKA- BP Page 5 of 9! O•eration Summa Report Common Well Name:C-24 AFE No Event Type:COM-ONSHORE(CON) Start Date:9/19/2012 End Date: 9/23/2012 IX3-0124Y-C: (1,136,933.00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.: NORDIC 1 Spud Date/Time:9/5/1982 12:00:OOAM Rig Release: Rig Contractor NORDIC CALISTA UWI:/Lat:070°1747.296"6 Long: 0148°40'08.689'W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 08:45 - 08:50 0.08 EVAL P OTHCMP END LOGGING AND FLOW CHECK WELL BEFORE POOH 08:50 - 10:05 1.25 EVAL P OTHCMP GOOD NO-FLOW,ESTABLISH RETURNS THEN POOH 10:05 - 10:15 0.17 EVAL P OTHCMP FLOW CHECK WELL 10:15 - 10:40 0.42 EVAL P OTHCMP GOOD NO FLOW ESTABLISH RETURNS AND PJSM TO PULL LOGGING BHA 10:40 - 10:50 0.17 EVAL P OTHCMP LOAD PERF GUNS ON THE RIG 10:50 - 11:10 0.33 EVAL P OTHCMP PU INJECTOR AND REMOVE FROM BHA THEN SET ON LEGS 11:10 - 11:25 0.25 EVAL P OTHCMP DROP 1/2"BALL AND PUMP TO OPEN CIRC SUB 11:25 - 14:25 3.00 EVAL P OTHCMP CIRC SUB OPENED AT 2300 PSI, RD HEAD PIN &-HOSE AND START PULLING CSH 14:25 - 14:40 0.25 EVAL P OTHCMP MARKER JOINT IS AT SURFACE,HOLD PJSM TO PULL REMAINING STANDS AND REMOVE SOURCE 14:40 - 15:30 0.83 EVAL P OTHCMP PULL LOGGING TOOLS,REMOVE SOURCE - AND LD TO CHECK FOR DATA 15:30 - 16:00 0.50 EVAL P OTHCMP LOGGING TOOLS OOH,CLEAR FLOOR AND -PREP TO RUN PERF GUNS 16:00 - 16:30 0.50 PERFOB P OTHCMP LOAD PERF GUNS ON RIG LOAD PITS WITH MORE KCL 16:30 - 16:55 0.42 PERFOB P OTHCMP PJSM TO MU PERF GUNS 16:55 - 18:00 1.08 PERFOB P OTHCMP MU PERF GUNS WHILE MAINTAINING CONSTANT HOLE FILL 18:00 - 18:30 0.50 PERFOB P OTHCMP HOLD VALVE DRILL WHILE MAKING UP CSH TO PREP FOR CHANGE OUT 18:30 - 22:15 3.75 PERFOB P OTHCMP PJSM ON MAKING UP WORK STRING FOR PERFORATION BHA. MU BHA PER RUNNING ORDER. MU TO INJECTOR. STAB ON, PRESSURE TEST QUICK TEST SUB. 22:15 - 00:00 1.75 PERFOB P OTHCMP RIH WITH PERFORATION BHA PUMPING AT MINIMAL RATE, KEEPING HOLE FULL. CORRECT TO FLAG DEPTH AT LINER TOP TO BIT DEPTH OF 9976.5'. 9/22/2012 00:00 - 02:45 2.75 PERFOB P OTHCMP RIH WITH PERFORATION ASSEMBLY TO 12,400' SLOW RUNNING RATE UNTIL TAG AT PBTD TAG AT 12 430.8' PICK UP TO NEUTRAL WEIGHT AT 12.423'AT 42K PICK UP. RUN BACK DOWN AND TAG AGAIN AT 12,430 7' PICK UP TO NEUTRAL AT 12.423'AT 41K. PICK UP. CONFIRM AGAIN. SET DEPTH TO CORRECTED PBTD OF 12,433.17'. 02:45 - 03:15 0.50 PERFOB P OTHCMP CONDUCT PERFORATION TEST SEQUENCE WITH PUMP TO CONFIRM PUMP RATE AND PRESSURES. CONTINUE PUMPING DOWN BACKSIDE TO KEEP HOLE FULL UNTIL OPERATOR BEGINS FIRING SEQUENCE. CONDUCT FIRING SEQUENCE, NO CLEAR INDICIATION OF FIRING AFTER COMPLETION OF FIRING SEQUENCE. COME ON WITH PUMPS DOWN BACKSIDE TO EQUAL LOSS RATE OF.4 BPM. CONDUCT FIRING SEQUENCE AGAIN. POSITIVE INDICATION OF FIRING. Printed 10/1/2012 10:53:21AM orth America -ALASKA- BP Page 6 of 9 a.� • •era#ion Summary Report Common Well Name:C-24 AFE No Event Type:COM-ONSHORE(CON) Start Date:9/19/2012 End Date: 9/23/2012 X3-0124Y-C: (1,136,933.00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.:NORDIC 1 Spud Date/Time: 9/5/1982 12:00:OOAM Rig Release: Rig Contractor:NORDIC CALISTA UWI:/Lat:070°17'47.296"6 Long: 0148°40'08.689'W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 03:15 - 05:00 1.75 PERFOB P OTHCMP PICK UP HOLE IMMEDIATELY,CLOSE IN CHOKE AND COME ON WITH PUMPS TO MAINTAIN 200 PSI BACK PRESSURE. POH AT 30 FPM HOLDING BACK PRESSURE. PICK UP ABOVE LINER TOP. 05:00 - 05:30 0.50 PERFOB P OTHCMP FLOW CHECK WELL FOR 30 MINUTES 05:30 - 07:00 1.50 PERFOB P OTHCMP CONTINUE POH WITH PERFORATION BHA WHILE PUMPING DOWN BACKSIDE AND COIL, HOLDING 100 PSI BACK PRESSURE. PUMP 15 BBLS OF FRESH WATER TO FLUSH CSH 07:00 - 07:10 0.17 PERFOB P OTHCMP STOP TO FLOW CHECK WELL 07:10 - 07:20 0.17 PERFOB P OTHCMP GOOD NO FLOW,ESTABLISH RETURNS AND HOLD PJSM TO PULL PERF BHA WELL TOOK 7 BBLS 07:20 - 07:30 0.17 PERFOB P OTHCMP TAG UP PUMP 10 OF 15 BBLS OF FRESH WATER THROUGH BHA TO RINSE CSH 07:30 - 07:45 0.25 PERFOB P OTHCMP REMOVE INJECTOR AND SET ON LEGS WHILE FLOWING ACROSS THE TOP TO KEEP THE HOLE FULL PVT=237 BBLS 07:45 - 09:30 1.75 PERFOB P OTHCMP START PULLING CSH 09:30 - 09:50 0.33 PERFOB P OTHCMP BHA PULLED TO THE MARKER JOINT,HOLD VALVE DRILL PICKING UP SAFETY JOINT AND LOWER BHA BELOW THE BOPE DURING SAFETY MEETING HOLD PJSM TO GO OVER HANDLING PERF GUNS AND MAINTAINING HOLE FILL 09:50 - 12:00 2.17 PERFOB P OTHCMP CONTINUE PULLING CSH THEN LD GUNS 12:00 - 12:30 0.50 PERFOB P OTHCMP GUNS OOH AND ALL SHOTS FIRED 12:30 - 13:30 1.00 PERFOB P OTHCMP OFF LOAD TCP EQUIP THEN LOAD LTP EQUIP 13:30 - 13:45 0.25 ZONISO P OTHCMP HOLD PJSM TO MU LTP 13:45 - 14:15 0.50 ZONISO P OTHCMP MU LTP BHA NO-GO TO SLIPS=42" TOL=9960'COLLAR ABOVE TOL=9948' TLP SLIPS SET AT 9954' AFTER 2'PU BEFORE SETTING 14:15 - 16:25 2.17 ZONISO P OTHCMP TEST QTS AND RIH Printed 10/1/2012 10:53:21AM Noah America-ALASKA- BP Page 7 of 9 O•eration Summary Re•ort Common Well Name:C-24 AFE No Event Type: COM-ONSHORE(CON) Start Date: 9/19/2012 End Date: 9/23/2012 X3-0124Y-C: (1,136,933.00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.: NORDIC 1 Spud Date/Time:9/5/1982 12:00:OOAM Rig Release: Rig Contractor:NORDIC CALISTA UWL/Lat:070°17'47.296"6 Long: 0148°40'08.689'W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 16:25 - 18:00 1.58 ZONISO P OTHCMP WT CHECK=37K ESTABLISH CIRC PRESSURE 0.5 BPM AT 48 PSI PREP TO SET LTP AS PER BTT&WELL PLAN PROCEDURES RIH AT MIN RATE TILL CT PRESSURE BUMP IS SEEN STING INTO TOL AT 9964',SHUT DOWN PUMP AND OPEN BAKER CHOKE TAG AT 9971'SET DOWN 10K AT 9973.31' PU TO UP WT+1'AND RECORD DEPTH= 9966.34' PU TO BALL PROP SPOT AT LEAST 7'TO PULL OUT or THE TOL CHECK PRESSURE AT 1.75 BPM=400 PSI LAUNCH 5/8"STEEL BALL TO SET LTP BALL LAUNCHED,CIRCULATE BALL OVER GOOSNECK THEN REDUCE RATE 38BBLS BALL OVER GOOSNECK,REDUCE RATE 17:42 BALL ON SEAT AT 53.3 BBLS OPEN - -BAKER CHOKE AND RIH TO TAG 17:44 PU TO UP+1 'DEPTH IS 9965.89' 17:46 CLOSE BAKER CHOKE AND PRESSURE UP TO 1850 PSI TO SET SLIPS 17:48 SET DOWN 10K TO ENERGIZE ELEMENT,NEW 10K DOWN WT DEPTH IS 9971.36' 17:51 PU TO NEUTRAL WEIGHT,LINE UP TO CIRC ACROSS TOP TO FILL HOLE 17:57 CLOSE IN CHOKE AND START LOW PT OF 200-300 PSI 18:00 18:10 0.17 ZONISO P OTHCMP START 5 MIN LOW PT CTS CHART=300 PSI CTS=443 PSI 18:10 - 18:45 0.58 ZONISO P OTHCMP GOOD LOW PT,INCREASE PRESSURE TO 2400 PSI. PRESSURE TEST LINER TOP PACKER PER CRT-AK-10-45 WITH PASSING TEST. PRESSURE UP TO RELEASE RUNNING TOOL. SHEAR AT 3180 PSI. 18:45 - 21:15 2.50 ZONISO P OTHCMP POH TO SURFACE FOR FLOW CHECK. CONDUCT PJSM FOR LAYING DOWN BHA WHILE POH. FLOW CHECK AT SURFACE GOOD. 21:15 - 21:45 0.50 ZONISO P OTHCMP LD BHA. BALL RETRIEVED. CLEAR AND CLEAN RIG FLOOR. PJSM ON RUNNING WORK STRING IN HOLE TO FLUSH. 21:45 - 00:00 2.25 FLWCLN P OTHCMP MAKE UP 40 JOINTS OF CSH WORK STRING. MAKE UP HEAD PIN AND PUMP AT HIGH RATE TO FLUSH STRING. CONDUCTED KICK DRILL WITH WORK STRING IN STACK, SIMULATED MOTORMAN DOWN,AND SIMULATED HYDRAULIC FAILURE ON SSV LINE CAUSING IT TO CLOSE AGAINST WORK STRING. CREW REACTED TO KICK ACCORDING TO STANDING ORDERS WHILE SCHLUMBERGER TOOK CONTROL OF SSV STATION IN COIL OPERATIONS CAB. WELL SECURE IN 2 MIN,45 SEC. MU HEAD PIN TO STRING AND PUMP KCL THROUGH AT HIGH RATE. Printed 10/1/2012 10:53:21AM North America -ALASKA- BP • Page 8 of 9 Operation Summary Report Common Well Name:C-24 AFE No Event Type COM-ONSHORE(CON) Start Date: 9/19/2012 End Date 9/23/2012 X3-0124Y-C: (1,136,933.00) Project:Prudhoe Bay Site:PB C Pad Rig Name/No.:NORDIC 1 Spud Date/Time:9/5/1982 12 00 00A Rig Release: Rig Contractor:NORDIC CALISTA UWI:/Lat:070°17'47.296"6 Long: 0148°40'08.689W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 9/23/2012 00:00 - 00:15 0.25 FLWCLN P OTHCMP CIRCULATE CLEAN WATER DOWN WORK STRING TO RINSE. HOLE STILL TAKING.3 BPM. 00:15 - 01:15 1.00 FLWCLN P OTHCMP STAND BACK WORK STRING IN STABBING BOX 01:15 - 02:00 0.75 WHSUR P POST CLEAR AND CLEAN RIG FLOOR. STAGE 'TRUCK FOR DIESEL PUMPING. PREPARE ,FOR FREEZE PROTECT. STAB ON WITH INJECTOR AND PRESSURE TEST QUICK TEST SUB. PJSM ON FREEZE PROTECT. PUMP ACROSS TOP TO KEEP HOLE FULL IN ALL OPERATIONS. 02:00 - 02:45 0.75 WHSUR P POST RIH WITH FREEZE PROTECT BHA. 02:45 - 03:30 0.75 WHSUR P POST RUN TO 2500'CIRCULATING DIESEL DOWN COIL. ON DEPTH AT 2500'. PUMP 2 BBLS AROUND, BEGIN PULLING OUT OF HOLE KEEPING UP WITH DISPLACEMENT AND LAYING IN DIESEL. PUMP TOTAL OF 40 BBLS DIESEL TO FREEZE PROTECT TO 2500'. - HOLE STILL TAKING FLUID AT.3 BPM. GREASE TREE WHILE POH. FLOW CHECK - .WELL AT SURFACE. ON WITH PUMPS UNTIL r DIESEL RETURNS AGAIN. 03:30 - 03:45 0.25 WHSUR P POST BREAK OFF FROM WELL WITH INJECTOR. SET BPV. 03:45 - 04:30 0.75 WHSUR P POST CLEAR AND CLEAN RIG FLOOR. FILL TREE WITH METHANOL. CLOSE VALVES. CONDUCT LEAK TIGHT BARRIER TEST PER CRITERIA 2.2.4 IN WELL PLAN AND ADWOP 10-36 SECTION 6. V 04:30 - 06:30 2.00 RIGD P POST STAGE AND RU NITROGEN UNIT. MU NOZZLE ASSEMBLY AND STAB ON WITH INJECTOR. PUMP FRESH WATER FOLLOWED BY CORROSION INHIBITOR FOLLOWED BY METHANOL THROUGH COIL. PJSM ON PUMPING NITROGEN. COOL DOWN LINES, PT LINES. 06:30 - 07:00 0.50 RIGD P POST BLOW DOWN REEL 07:00 - 07:30 0.50 RIGD P POST BLEED OFF N2 SUCK OUT TIGER TANK 07:30 - 08:00 0.50 RIGD P POST PJSM TO LINE OUT PLAN FORWARD FOR WORK THAT NEEDS TO BE PERFORMED THIS MORNING 08:00 - 09 00 1.00 RIGD P POST REMOVE INJECTOR FROM WELL MOVE TRUCK TO SUCK OUT PITS 09:00 - 11:30 2.50 RIGD P POST HANG BLOCKS TO SLIP&CUT DRILL LINE SLIP&CUT DRILL LINE TEST CROWN-O-MATIC AND CLEAR FLOOR 11:30 - 12:30 1.00 RIGD P POST MOVE TONGS TO STABBING BOX 12:30 - 13:00 0.50 RIGD P POST PJSM TO OPEN BOP DOORS TO INSPECT RAMS BREAKING CONTAINMENT WAS DONE AT 03:45 13:00 - 14:25 1.42 RIGD P POST REMOVE BOP DOORS AND INSPECT RAMS HAD TO REPLACE MOSTLY TOP SEALS AND THE VARIABLES Printed 10/1/2012 10.53:21AM "�� ' �= "�`�"�° � North America -ALASKA- BP ��°�� °_ ��rE �..��°/ Page 914,1 Operation Summary Report H ,,. :.q Common Well Name:C-24 AFE No Event Type: COM-ONSHORE(CON) Start Date:9/19/2012 End Date: 9/23/2012 X3-0124Y-C: (1,136,933.00) Project:Prudhoe Bay Site: PB C Pad Rig Name/No.. NORDIC 1 Spud Date/Time:9/5/1982 12:00:00AM Rig Release: Rig Contractor: NORDIC CALISTA UWI:/Lat:07001747.296"6 Long: 0148°40'08.689'W Active Datum:ORIG KELLY BUSHING @71.60ft(above Mean Sea Level) Date From-To Hrs Task Code NPT NPT Depth Phase Description of Operations (hr) (ft) 14:25 - 17:15 2.83 RIGD P POST LOU GRIMALDI WITH THE STATE HAS WAIVED WITNESSING THE BOP TEST ON B-27B 17:15 - 20:00 2.75 RIGD P POST ND BOPE 20:00 - 21:30 1.50 RIGD P POST FILL ABOVE SWAB WITH METHANOL. NU TREE CAP,PRESSURE TEST. GOOD TEST. SECURE WELL. RIG RELEASE AT 2130 HRS. CONTINUE WITH PREPARATION TO MOVE OFF WELL. TOURPUSHER AND DRILLER CONDUCT ONE LAST ROUTE DRIVE BEFORE PJSM ON RIG MOVE. WARM UP MOVING SYSTEM. Printed 10/1/2012 10:53 21AM Letter of Transmittal MIS Date: �-�"E i r E0 BAKER October 2, 2012 O C 1 12 2012 HUGHES I To: From: State of Alaska AOGCC Baker Hughes INTEQ 333 W. 7th Ave., Suite 100 795 East 94th Avenue Anchorage, Alaska 99501 Anchorage, Alaska 99515 Bill Michaelson Please find enclosed the directional survey data for the following well(s): C-09BPB 1 C-09B 0 c -I CPB1 -I _ - dip ' C-24BPB 1 C-24B _ B-27B — 07-22A 1 o a5 - S-37APB1 S-37A ? s PON S-32A J w' O C� - S-12B ( - l Enclosed for each well(s): 2 hardcopy prints of directional survey reports 1 compact disk containing electronic survey files Please sign and return one copy of this transmittal form to: BP Exploration (Alaska) Inc. Petrotechnical Data Center, LR2-1 900 E. Benson Blvd. Anchorage, Alaska 99508 to acknowledge receipt of this data. RECEIVED BY: , State of Alaska AOGCC DATE: 3t.€ c-Z4. 2-12-6G30 Regg, James B (DOA) From: Sarber, Greg J [SarberJG@BP.com] Sent: Tuesday, September 18, 2012 6:50 AM e �i ctIi �� To: Scheve, Charles M (DOA) Cc: Regg, James B (DOA) Subject: RE: Nordic 2 BOP Usage Report on well C-24B Jim, Chuck, � My appologies. The incident yesterday did in fact occur on Nordic rig 1 on well C-24B. Thanks for catching that. Cheers, Greg From: Scheve, Charles M (DOA) [mailto:chuck.scheve(aalaska.gov] Sent: Tuesday, September 18, 2012 6:45 AM To: Sarber, Greg 3 Subject: RE: Nordic 2 BOP Usage Report on well C-24B Don't you mean Nordic 1 From: Sarber,Greg J [mailto:SarberJG@BP.com] Sent: Monday, September 17,2012 5:56 PM To: Regg, James B (DOA) Cc: Daniel, Ryan;Kilfoyle,Jeffery A; McMullen, John C; Willingham,James M; Rossberg, R Steven; Sheffrey, Tom(Fircroft); DOA AOGCC Prudhoe Bay Subject: Nordic 2 BOP Usage Report on well C-24B All, At—09:00 hours on 9-17-2012,Nordic 2 experienced gas cut mud on well C-24B. No pressure or flow was observed from the well at any time,but a bullhead well kill was performed. Please see the attached report for full details of the event. You may also contact me directly with any questions. Sincerely, Greg Greg Sarber Operations Superintendent RWO/CTD +1 (907)659-5329(Office-slope) +1(907)242-8000(Cell Phone) Harmony 2157 Alternate. Rich Burnett 1 Blow Out Preventer Equipment ( BOPE ) Usage Report to the AOGCC The purpose of this document is to ensure timely reporting to the AOGCC of any BOPE use to prevent the flow of fluids from a well. Field Superintendent Name: Wellsite Leader Name: Greg Sarber Mark Igtanloc Contact Number: 907-659-5329 Contact Number: 907-659-4433 Traction Number: IR-4233645 Well Location & Name: C Pad Well 24B Permit To Drill (PTD) Number: 2 i Z06,3c Date and Time of Incident: 09:55am Original Scope of Work: Checking well for Pressure and flow after well was shut in for 18-hrs while testing BOPE Operational Description Leading up to Well Control Event: While testing BOP's our well was shut in for 18-hrs. Prior to BOP testing the well had been experiencing dynamic Losses of 50 bbl/hr. Once the BOPE & choke manifold tests were completed, the injector was made up to the well and the pack-off, lubricator and inner reel valve were tested to complete the test. The injector remained on the well and the well was opened up to a closed choke to check for pressure. After monitoring the well for 10 min, no pressure was seen on the elec or mech gauges, a Whitey Valve on the lubricator was opened and the well was on a vac. The choke was opened to 50% to check for flow. No flow was observed so we started filling the hole down the coil and RIH at the same time. At 12 bbls_away and107' in the.. ole we started seeing low level gas at the shaker and the well was shut in with the choke to monitor for pressure. Notifications were made at this point to the Drlg Supt and ODE. The well was shut in for 2hrs 35min while a plan forward was drafted & approved, during this time the WHP was being monitored and remained at Opsi. It was decided to be cautious and bullhead kill the well. A bullhead kill was performed by pumping drilling mud down the well at 4 bpm, 1080 psi. After the kill no wellhead pressure was observed. The drilling BHA was made up and operations continued drilling a CTD sidetrack. BOPE Used and Reason: Super choke was closed to monitor well for pressure Is a BOPE Test Required after use: Only for the Pack-Off. The Pack-Off was retested before continuing operations and Chuck Scheve with the State was notified. 24 hour notice required to NS AOGCC Inspectors prior to testing BOPE components. Plan Forward: Bullhead killed the well and monitor for flow. Good no flow check was performed and we continued our operations. Additional Comments: Email to AOGCC North Slope Inspectors within 24 hours of the incidei doa.aogcc.prudhoe.bay(a�alaska.gov BOPE Usage Report for AOGCC August 2, 2010 HRE 1 Email CC List Well Integrity Team Leader Ryan Daniel HSE Advisor Jeff Kilfoyle Engineering Team Leader Ken Allen, John Egbejimba, John McMullen, Dave Reem Wells Operations Manager Steve Rossberg Wells Intervention Manager Doug Cismoski Organizational Capability Tom Sheffrey BOPE Usage Report for AOGCC August 2, 2010 HRE 2 Ii,(` I17 � 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 John McMullen Engineering Team Leader BP Exploration (Alaska), Inc. P.O. Box 196612 Anchorage, AK 99519-6612 Re: Prudhoe Bay Field, Prudhoe Bay Oil Pool, PBU C-24B BP Exploration (Alaska), Inc. Permit No: 212-063 Surface Location: 1425' FNL, 1030' FEL, SEC. 19, T11N, R14E, UM Bottomhole Location: 5260' FNL, 751' FEL, SEC. 24, Ti1 N, R13E, UM Dear Mr. McMullen: 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. Sincerely, ?;oee, Cathy P. Foerster Chai DATED thisday of May, 2012. cc: Department of Fish 86 Game, Habitat Section w/o encl. (via e-mail) Department of Environmental Conservation w/o encl. (via e-mail) STATE OF ALASKA RECEIVED ' ALASI' AL AND GAS CONSERVATION COMMI, )N PERMIT TO DRILL MAY 0 8 2012 20 MC 25.005 �� 1 a.Type of work: lb.Proposed Well Class: IN Development Oil 0 Service-Winj ®Single Zone lc. Specify" if-w�ll Trood for: ❑ Drill ®Redrill 0 Stratigraphic Test 0 Development Gas 0 Service-Supply 0 Multiple Zone 0 Coalbed Gas 0 Gas Hydrates ❑ Re-Entry 0 Exploratory 0 Service-WAG 0 Service-Disp 0 Shale Gas 2. Operator Name: 5.Bond: ® Blanket 0 Single Well 11. Well Name and Number: BP Exploration (Alaska) Inc. Bond No. 6194193 PBU C-24B - 3. Address: 6. Proposed Depth: 12.Field/Pool(s): P.O. Box 196612,Anchorage,Alaska 99519-6612 MD 12485' , ND 8957'ss • Prudhoe Bay/Prudhoe Bay 4a. Location of Well(Governmental Section): 7. Property Designation(Lease Number): Surface: ADL 028305&28285 1425 FNL, 1030'FEL, Sec. 19,T11 N, R14E, UM Top of Productive Horizon: 8. Land Use Permit: 13. Approximate Spud Date: 4364'FNL,3995'FEL, Sec. 19,T11N, R14E, UM June 26,2012 Total Depth: 9.Acres in Property: 14.Distance to Nearest Property: 5260'FNL, 751'FEL, Sec.24,T11 N, R13E, UM 2560 27500' 4b. Location of Well(State Base Plane Coordinates-NAD 27): 10.KB Elevation above MSL: 65.72' feet 15.Distance to Nearest Well Open Surface: x- 664351 ' y-5959793 ` Zone- ASP4 GL Elevation above MSL: 37.22' feet to Same Pool: 900' 16.Deviated Wells: Kickoff Depth: 10175'. feet 17.Maximum Anticipated Pressures in psig(see 20 AAC 25.035) Maximum Hole Angle: 95 degrees Downhole: 3249 Surface: 2369 18. Casing Program: Specifications Top-Setting Depth-Bottom Quantity of Cement,c.f.or sacks Hole Casing Weight Grade Coupling Length MD ND MD , ND (including stage data) 4-1/4" 3-1/2"x3-1/4")Q-7/8" 88#i62#/47# L-80 STL/TC-II 2510' 9975' 8594'ss 12485' 8957'ss 115 sx Class'G' ' 19. PRESENT WELL CONDITION SUMMARY(To be completed for Redrill and Re-entry Operations) 1 Total Depth MD(ft): Total Depth TVD(ft): Plugs(measured): Effective Depth MD(ft): Effective Depth ND(ft): Junk(measured): 11275' 9019' 10720' 11187' 9019' None Casing Length Size Cement Volume MD TVD Conductor/Structural 110' 20"x 30" 8 cu vds Concrete 110' 110' Surface 2671' 13-3/8" 3767 cu ft Arctic Set II 70'-2741' 70'-2691' Intermediate 9310' 9-5/8" 1453 cu ft Class'G'. 1117 cu ft AS I 9310' 8025' Production Liner 9729' 7" 191 cu ft Class'G'. 1561 cu ft Class'G' 27'-9756' 27'-8443' Liner 1690' 4-1/2" 247 cu ft Class'G' 9584'-11274' 8274'-9019' Perforation Depth MD(ft): 10455'- 11180' Perforation Depth ND(ft): 9007'-9020' 20.Attachments: 0 Property Plat ® BOP Sketch ®Drilling Program 0 Time vs Depth Plot 0 Shallow Hazard Analysis ® Diverter Sketch 0 Seabed Report ®Drilling Fluid Program ®20 AAC 25.050 Requirements 21. Verbal Approval: Commission Representative: Date: 22. I hereby certify that the fore.•ing is true and orrect. Contact Ron Phillips,564-5913 Printed Name Jolt,al ui /AF Title Engineering Team Leader p Prepared By Name/Number Signature r, / Phone 564-4711 Date . 0 /Z Joe Lastufka,564-4091 Commission Use Only 1 Permit To 0 / API Number: Permit Ap rov I Date: See cover letter for Number: 50-029-20816-02-00 °D111-411 2 other requirements Condition of Approval: If box is checked,well may not be used to explore for,test,or produce coalbed meth ne,gas hydrates,or gas contained shales: Other: e L f P e .�— Samples Req'd: ❑Yes LJ No Mud Log Req'd: EI/Yes �No 35�C 7 HZS Measures: I "Yes 0 No Directional Survey Req'd: LJ Yes 0 No S. �z PPROVED BY THE COMMISSION Date J-K 4 -/ - / COMMISSIONER Form 10-401 Revised 07/2009 ,VThis permit is valid for 24 months from the date of approval 120 AAC 25.005(g)) Submit In Duplicate ps iiiriti ORIGINAL , /�- . y�' , -, To: Alaska Oil & Gas Conservation Commission From: Ron Phillips 0 by CTD Engineer Date: May 3, 2012 Re: C-24B Permit to Drill Request Approval is requested for a permit to drill a CTD sidetrack from well C-24A. CTD Drill and Complete C-24B program: Rig Start Date: June 26th, 2012 History of C-24A. C-24A is a rotary sidetrack drilled in July 2004 and completed with 300' of perforations in Zone 2A. Initial production rates quickly levelled off with HGOR. The well went to cycle within -6 mos and has been cycling ever since. The high initial gas rate prompted the 6/19/06 STP/Borax/MCNL, however a channel from the perforations to the gas cap was not evident. The MCNL indicated the PGOC lowered from -8,922' SSTVD to - 8,925' SSTVD since July 2004. 75' of Z2A (three sets of 25') were shot in June 2007 without much effect. In Feb 2010 a CIBP was set at 10,720' to shut off gas, and an additional 25' of Z2A was shot. Both gas and oil rates decreased; the well was unable to flow naturally. 15' of Z2A was added shallower in the heel in Feb 2011. The well was able . to flow naturally but was not competitive. C-24A is currently shut-in for high GOR. The most recent calliper from 3/12/2012 showed the 4-1/2" tubing to be in fair condition, with a maximum wall penetration of 20%, 24% and 27% recorded at 5,728', 7,469' and 6,336'. All other wall penetrations are less than 19%. All sidetrack screening pressure tests passed. Reason for sidetrack. C-24A is no longer a competitive producer due to a high GOR, and there are no remaining well work options. The proposed sidetrack will access reserves in a -40 acre Zone 2A target in south-western C-pad. Proposed plan for C-24A. The existing perforations will be isolated by setting a 4-1/2" packer whipstock set pre-rig. The primary cement job for the liner will cover the whipstock by 200'. The sidetrack, C-24B, will exit the existing 4-1/2" liner and kick off and land in the Ivishak Zone 2A. This sidetrack will be completed with a cemented and perforated 3-1/4" X 2-7/8" L- 80 liner in the production interval. The following describes the work planned and is submitted as an attachment to Form 10-403. A schematic diagram of the proposed sidetrack is attached for reference. • Pre-Rig Work: (scheduled to begin May 17th, 2012) 1. F MIT- IA to 3,000 psi (Passed 3/25/2012) 2. F MIT-OA to 2,000 psi. (Passed 3/28/2012) 3. W Cycle LDS; PPPOT- T to 5,000 psi. (Passed 2/12/2012) 4. S Drift for 4-1/2" packer whipstock to 10,225'. . 5. E Mill XN nipple at 9,580' MD with to 3.80" with Welltec tools. 6. EP Set 4-1/2" packer WS at 10,175' (orientate 268° ROHS). 7. V PT MV, SV, WV. 8. F MIT-T (4-1/2" packer WS) to 2,500 psi for 30 minutes. 9. 0 Blind and bleed lines to zero, remove wellhouse and level pad. 10. V Set 4" CIW TWC 24 hrs prior to rig arrival. Rig Sidetrack Operations: (Scheduled to begin on June 26st, 2012 using Nordic Rig 1) 1. MIRU Nordic Rig 1. 2. NU 7-1/16" CT Drilling BOPE and test.35o°c-;5 Pg'4 3. Mill 3.80" single string window in the 4-1/2" liner at 10,175'. 4. Drill Build: 4.25" OH, 505' (29°/100 planned). 1'r� 5. Drill Lateral in Z2A: 4.25" OH, 1,785' (12°/100 planned) with resistivity. PTD 6. Run 3-1/4" x 2-7/8" L-80 liner XO at 10,950' leaving TOL -9,975' MD. 7. Pump primary cement leaving TOC at TOL at 9,975' MD, 27.3 bbls of 15.8 ppg Class G cement planned. 8. Perform cleanout w/ mill, motor and MCNUGR/CCL log in one run. 9. Test liner lap to 2,400 psi. 10.Perforate well (-200'). 11.Freeze protect well with diesel to 2,500' TVD. 12.Set BPV. ND 7-1/16" BOPE stack. 13.Freeze protect tree and PT tree cap to 3,500 psi. 14.RDMO Nordic 1. Post Rig: 1. Re-install wellhouse, flowline and pull BPV. 2. Set 4-1/2" liner top packer with skickline, and test to 2,400 psi. Mud Program: • Well kill: 8.4 ppg seawater/ brine. • Milling/drilling: 8.6 ppg Geo-VIS for milling window and drilling (686 psi over-balance). Disposal: • All Class I & II non-hazardous and RCRA-exempt drilling and completion fluids will go to GNI at DS4orPad3atDS6. • Fluids >1% hydrocarbons or flammables must go to Pad 3. • Fluids >15% solids by volume must go to GNI. • Fluids with solids that will not pass through 1/4" screen must go to GNI. • Fluids with PH >11 must go to GNI. Hole sizes: 4.25" from 10,175' MD — 12,485' MD. Liner Program: Solid, cemented, and perforated completion planned. • 3-1/2", L-80, 8.8 ppf, STL liner from 9,975'-10,005' MD. - - 15 . • 3-1/4,�, L-80, 6.2 ppf, TC-Il liner from 10,005'-10,950' MD. • 2-7/8", L-80, 4.7 ppf, STL liner 10,950' -12,485' MD. • v.`r • Planned 27.3 bbls of 15.8 class G cement will be used for liner cementing (assuming 4.25" hole size to TD and 20% excess in open hole). • TOC at TOL planned at 9,975' MD. • The primary barrier for this operation: a minimum EMW of 8.4 ppg. • A X-over shall be made up to a safety joint including a TIW valve for all tubulars ran in hole. Well Control: • BOP diagram is attached. • Pipe rams, blind rams and the CT pack off will be pressure tested to 250 psi and to 3500 psi. • The annular preventer will be tested to 250 psi and 2500 psi. Directional • See attached directional plan. Maximum planned hole angle is 96°, inclination at kick off point is 33°. • Magnetic and inclination surveys will be taken every 30 ft. No gyro will be run. • Distance to nearest property— 27,500' (North). • Distance to nearest well within pool — 900' from C-05A. Anti-Collision • C-05A at 12,275' CTR-CTR 788' • C-26A at 11,459' CTR-CTR 944' • D-13A at 10,664 CTR-CTR 908' Logging • MWD directional, Gamma Ray and Resistivity logs will be run in the open hole lateral section while drilling. Resistivity will not be run over the short build section. • Cased hole GR/CCUMCNL logs will be run. • Perforating: • SWS 2" 2006 PJ HMX, 6 spf, 60 deg phasing pert guns • The primary barrier for this operation: a minimum EMW of 8.4 ppg. • A X-over shall be made up to a safety joint including a TIW valve for all tubulars ran in hole. Hazards • C-Pad is not considered an H2S pa•. ► -II C-33A had 38 ppm H2S on 4/6/2011. • Most recent H2S level on C-24 A 22 • .m recorded on 1/19/2012. • The lost circulation risk in the - B is considered to be med to low with two fault crossings planned. o Fault #1 at 11,400' MD 50' throw DTW o Fault#2 at 12,000' MD 30' throw DTW Reservoir Pressure • The reservoir pressure is estimated to be 3,249 psi at 8,800 TVDss (7.1 ppg equivalent) based on average offset pressures. • Max expected surface pressure with gas (0.10 psi/ft) to surface is 2,369 psi: • An EMW of 8.4 ppg for this well will provide 595 psi over-balance to the reservoir.. Ron Phillips Coiled Tubing Drilling Engineer 564-5913 CC: Well File Terrie Hubble/Joe Lastufka TREE= ' . 6"CIW WELLHEAD= McEVOY C-24A SAFES JTES: ACTUATOR= OTIS KB.ELEV= 71.62' BF.ELEV= 37.22' KOP= 1700' • ♦ Max Angle= 94 @ 10747 • �♦ Datum MD= 8866' ♦ ►♦4 Datum TVD= 8800'SS t ♦� • TOP OF SCAB LNR 27' t I I j♦j 2185' �4-1/2"HES X NIP,ID=3.813" �♦ 1• 4• TOP OF 13-3/8"CSG —I 70' O. 1 • •♦ ►♦4 t�: : � 2200' —TOP OF CEMENT • 13-3/8"CSG,72#,L-80, ID=12.347" — 2741' Ot4.•: ! � t 4. GAS LIFT MANDRELS • • ST MD TVD DEV TYPE VLV LATCH PORT DATE Minimum ID = 3.725" @ 9580' ii I j 4 3286 3130 37 CAMCO DOME BK 16 05/13/10 • 4-1/2" HES XN NIPPLE � ( L • 3 5921 5262 38 CAMCO DOME BK 16 05/13/10 2 7811 6758 33 KBG-2 DOME BK 16 05/13/10 • 1 9238 7963 30 KBG-2 SO BK 20 05/13/10 44 4 4. t • 4 2I 9164' —9-5/8"X 7"BKR ZXP LNR TOP PKR 9524' —ELMD TT LOGGED 08/23/83 PERFORATION SUMMARY REF LOG:SLB MEM BORAX ON 02/08/11 MILLOUT WINDOW(C-24A)9310'-9326' ANGLE AT TOP PERF: 74° @ 10455' Note: Refer to Roduction DB for historical perf data SIZE SPF INTERVAL Opn/Sqz' DATE 2-7/8" 6 10455-10470 0 02/07/11 9514' —4-1/2"HES X NIP, ID=3.813" 2-7/8" 6 10485-10500 0 02/07/11 3-3/8" 6 10515- 10540 0 02/05/10 'rk2-7/8" 6 10583-10608 0 06/09/07 ,•, NA. 9535 —7"X 4-1/2"BKR S-3 PKR 2-7/8" 6 10663-10688 0 06/09/07 + 4' 2-7/8" 6 10780- 10805 C 06/09/07 ''` '•�� 2-7/8" 4 10880- 11180 C 07/03/04 j♦�♦s4 ►'♦♦♦♦♦♦♦♦♦*• 9559' —4-1/2"HES X NIP, ID=3.813" ►♦♦♦♦♦♦♦♦♦♦♦♦ ♦♦♦♦♦♦ ►♦♦♦♦♦♦ - ♦♦♦♦♦♦ ►♦♦♦♦♦• 9580' —4-1/2"HES XN NIP,ID=3.725" ♦♦♦♦♦♦ 9-5/8"CSG,47#, L-80, ID=8.681" 9759' 1 A •♦♦♦♦♦♦ ►♦♦♦♦♦♦♦♦♦♦♦♦ 9592' —4-1/2"WLEG,ID=3.958" ♦♦♦♦♦♦ •♦♦♦♦♦♦♦♦♦♦♦♦ �4 ►� 9592' —7"X 5"BKR ZXP LNR TOP ►♦♦♦♦♦♦♦♦♦♦♦♦ ►♦♦♦♦♦♦♦♦♦♦♦♦ r PKR W/TIEBACK SLV 7"LNR,26#,L-80, .0383 bpf, ID=6.276" — 10660' I\i 9605' —5"X 4-1/2"XO, ID=3.950" 4-1/2"TBG, 12.64,L-80, .0152 bpf, ID=3.958" — 9591' I k 7"LNR,26#,L-80,.0383 bpf, ID=6.276" — 9756' ' ' 10720' —14-1/2"CIBP(02/05/10) I •♦• 11187' H PBTD 4-1/2"LNR, 12.6#,L-80, .0152 bpf, ID=3.958" H 11274' •-♦-♦.' DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 09/23/82_ ORIGINAL COM PLETION 02/27/10 DAV/PJC GLV C/O(02/26/10) WELL: C-24A 07/04/04 JLM/KAK RIG SIDETRACK(C-24A) 02/27/10 JKC/PJC CIBP&ADPERFS(02/05/10) PERMIT No: 2040580 07/21/04 RMH/KAK GLV C/O 05/18/10_ RCT/SV GLV C/O(05/13/10) API No: 50-029-20816-01 08/04/04 ATD/TLP TOP OF CSG/CMT CORRECTIONS 02/12/11 AMW/PJC ADPERFS(02/07/11) SEC 19,T11 N,R14E, 1425'FNL&1030'FEL 09/21/06 JLJ/PAG GLV C/O 06/10/07 HDR/PAG ADPERFS BP Exploration(Alaska) TRE WEL H 6" C-24 B - WFILHEAD= McEVOY SAFES _ __JTES: ACTUATOR= OTIS KB. ELEV= 71.62' proposed CTD sidetrack BF.ELEV= 37.22' KOP= 1700' ♦• ►• Max Angle= 94 @ 10747' • • Datum MD= 8866' i•• �� Datum TVD= 8800'SS .� TOP OF SCAB LNR H 27' �: I I •j♦j 2185' 4-1(2"HES X NIP, ID=3.813" TOP OF 13-3/8"CSG H 70' ►♦ I4 I: �. � 2200' TOP OF CEMENT • 13-3/8"CSG,72#,L-80, ID=12.347" H 2741' .0te 04 ��, GAS LIFT MANDRELS •• �� ST MD TVD DEV TYPE VLV LATCH PORT DATE •, 04. 4 3286 3130 37 ' CAMCO DONE BK 16 05/13/10 Minimum ID = 2.377" @ 10950' j II "� 3 5921 5262 38 CAMCO DOME BK 16 05/13/10 3-114" X 2-7/8" XO j •' 2 7811 6758 33 KBG-2 DOME BK 16 05/13/10 • j! 1 9238 7963 30 KBG-2 SO BK 20 05/13/10 41 .. .• •TSGR = 9,760' MD t ' . i. 2 0 9164' —I9-5/8"X 7"BKR ZXP LNR TOP PKR PERFORATION SUMMARY 9524' -ELMD TT LOGGED 08/23/83 REF LOG:SLB MEM BORAX ON 02/08/11 ANGLE AT TOP PERF: 74°@ 10455' MILLOUT WINDOW(C-24A)9310'-9326' Note:Refer to Production DB for historical perf data SIZE SPF I TERVAL Opn/Sqz DATE 2-7/8" 6 10455- 10470 0 02/07/11 2-7/8" 6 10485-10500 0 02/07/11 9514' �-{4-112"HES X NIP, ID=3.813" 3-3/8" 6 10515-10540 0 02/05/10 2-7/8" 6 10583-10608 0 06/09/07 2-7/8" 6 10663 10688 0 06/09/07 NIL. 9535' —17"X 4-1/2"BKR S-3 PKR 2-7/8" 6 10780- 10805 C 06/09/07NI 2-7/8" 4 10880- 11180 C 07/03/04 ♦♦ '6. i♦'♦♦♦♦♦•♦'• ♦♦♦♦♦♦ :�� I 9559' 4-1/2"HES X NIP, ID=3.813" ♦♦♦♦♦♦ ►♦♦♦♦♦♦ ♦♦♦♦♦♦ •♦♦♦♦♦♦ ' 9580' 4-1/2"HES XN NIP,ID=3.80" ♦♦♦♦♦♦ ♦♦♦♦♦♦ milled out 9-5/8"CSG,47#, L-80,ID=8.681" — 9759' e••••••••••• ♦♦♦♦♦♦ ►♦♦♦♦♦♦ 9592' 4-1/2"WLEG, ID=3.958" ►i♦4♦i♦i♦i♦ib 7"LNR,26#,L-80, .0383 bpf, ID=6.276" H 10660' ♦ 4 •' 9592' 7"X 5"BKR ZXP LNR TOP 4-1l2"TBG, 12.6#,L-80, .0152 bpf,ID=3.958" H 9591' ' FKR W/TIEBACK SLV 7"LNR,26#,L-80, .0383 bpf, ID=6.276" H 9756' Io 3 9605' —15"X 4-1/2"XO,D.3.950" 3-1/2"x 3-1/4"XO (1-1---1 / Top of 3-1/2"liner and cement @-9,975' 2-7/8"liner TD @ 12,485' 4-1/2"packer whipstock @ 10,175' 7 „II 33° 3-1/4"x 2-7/8"XO @-10,950' I 10720' H4-1/2"CIBP(02/05/10) •••I 11187' H PBTD 4-1/2"LNR, 12.6#, L-80, .0152 bpf,ID=3.958" — 11274' •♦♦♦♦♦• DATE REV BY COMMENTS DATE REV BY COMMENTS PRUDHOE BAY UNIT 09/23/82 ORIGINAL COMPLETION 02/27/10 DAV/PJC GLV C/O(02/26/10) WELL: C-24P 07/04/04 JLM/KAK RIG SIDETRACK(C-24A) 02/27/10 JKC/PJC CIBP&ADPERFS(02/05/10) PERMIT No:X2040580 07/21/04 RMI-VKAK GLV C/O 05/18/10 RCT/SV GLV C/O(05/13/10) API No: 50-029-20816-01 08/04/04 ATD/TLP TOP OF CSG/CMT CORRECTIONS 02/12/11 AMVV/PJC ADPERFS(02/07/11) SEC 19,T11 N,R14E, 1425'FNL&1030'FEL 09/21/06 JLJ/PAG GLV C/O 04/11/12 WJH proposed CTD sidetrack 06/10/07 HDR/PAG'ADPERFS BP Exploration(Alaska) a .Q 0 CL. 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N N r'III BAKER HUGHES INTEQ North America - ALASKA - BP Prudhoe Bay PB C Pad C-24 / Lat: 070°17'47.296'16 Long: 0148°40'08.689"W C-24B Plan 3 Travelling Cylinder Report 18 April, 2012 Qbp BAKER HUGHES Travelling Cylinder Report y bp INTEQ Company: North America-ALASKA-BP Local Co-ordinate Reference: Well C-24 Project: Prudhoe Bay TVD Reference: Mean Sea Level Reference Site: PB C Pad MD Reference: C-24A:@ 65.72ft(C-24A:) Site Error: 0.00ft North Reference: True Reference Well: C-24 Survey Calculation Method: Minimum Curvature Well Error: 0.00ft Output errors are at 1.00 sigma Reference Wellbore C-24B Database: EDM.16-ANC Prod-WH24P Reference Design: Plan 3 Offset TVD Reference: Offset Datum Reference Plan 3 Filter type: GLOBAL FILTER APPLIED:All wellpaths within 200'+ 100/1000 of refer( Interpolation Method: MD Interval 25.00ft Error Model: ISCWSA Depth Range: 10,162.84 to 12,485.00ft Scan Method: Tray.Cylinder North Results Limited by: Maximum center-center distance of 1,445.23ft Error Surface: Elliptical Conic Survey Tool Program Date 4/17/2012 From To (ft) (ft) Survey(Wellbore) Tool Name Description 94.12 9,294.12 1 :Camera based gyro multisho(C-24) CB-GYRO-MS Camera based gyro multishot 9,310.00 10,162.84 C-24A MWD(C-24A) MWD MWD-Standard 10,162.84 12,485.00 Plan 3(C-24B) MWD MWD-Standard Casing Points Measured Vertical Casing Hole Depth Depth Diameter Diameter (ft) (ft) Name (in) (in) 2,735.12 2,620.26 13 3/8" 13.375 17.500 9,750.12 8,371.16 DRILLING LINER 1 7.000 8.500 12,485.00 8,957.29 2 7/8" 2.875 4.125 CC-Min centre to center distance or covergent point,SF-min separation factor,ES-min ellipse separation 4/18/2012 1:57:59PM Page 2 of 17 COMPASS 2003.16 Build 73 V&lig ..o,, BAKER b HUGHES Travelling Cylinder Report ii, INTEQ Company: North America-ALASKA-BP Local Co-ordinate Reference: Well C-24 Project: Prudhoe Bay TVD Reference: Mean Sea Level Reference Site: PB C Pad MD Reference: C-24A:@ 65.72ft(C-24A:) Site Error: 0.00ft North Reference: True Reference Well: C-24 Survey Calculation Method: Minimum Curvature Well Error: 0.00ft Output errors are at 1.00 sigma Reference Wellbore C-24B Database: EDM.16-ANC Prod-WH24P Reference Design: Plan 3 Offset TVD Reference: Offset Datum Summary Reference Offset Centre to No-Go Allowable Measured Measured Centre Distance Deviation Warning Site Name Depth Depth Distance (ft) from Plan Offset Well-Wellbore-Design (ft) (ft) (ft) (ft) PB C Pad C-01 -C-01 -C-01 Out of range C-01 -C-01A-C-01A Out of range C-01 -C-01 B-Plan 4 Out of range C-02-C-02-C-02 Out of range C-02-C-02A-C-02A Out of range C-02-C-02A-Plan 3 Out of range C-03-C-03-C-03 Out of range C-03-C-03A-C-03A Out of range C-03-C-03B-C-03B Out of range C-04-C-04-C-04 Out of range C-04-C-04A-C-04A Out of range C-04-C-04APB1 -C-04APB1 Out of range C-04-C-04APB2-C-04APB2 Out of range C-04-C-04APB3-C-04APB3 Out of range C-04-C-04B-C-04B Out of range C-04-C-04B-Plan#5 Out of range C-05-C-05-C-05 12,275.00 11,525.00 787.63 1,430.84 -566.09 FAIL-Major Risk C-05-C-05A-C-05A 12,275.00 11,525.00 787.63 1,430.84 -566.09 FAIL-Major Risk C-07-C-07-C-07 Out of range C-07-C-07A-C-07A Out of range C-08-C-08-C-08 Out of range C-08-C-08A-C-08A Out of range C-08-C-08APB1 -C-08APB1 Out of range C-08-C-08B-C-08B Out of range C-08-C-08BPB1 -C-08BPB1 Out of range C-23-C-23C-C-23C 10,260.00 11,250.00 1,154.37 801.89 563.59 Pass-Major Risk C-23-C-23C-Plan#3 10,270.00 11,325.00 1,191.76 780.24 675.71 Pass-Major Risk C-24-C-24-C-24 10,967.98 10,475.00 136.40 102.47 43.09 Pass-Major Risk C-24-C-24A-C-24A 10,175.00 10,175.00 0.00 0.52 -0.49 FAIL-Major Risk C-25-C-25B-C-25B Out of range C-26_DIMS-C-26-C-26 Out of range C-26A-C-26A-C-26A 11,459.06 13,057.00 944.23 1,492.37 -548.12 FAIL-Major Risk C-30-C-30-C-30 Out of range C-30-C-30A-C-30A Out of range C-34-C-34-C-34 Out of range C-34-C-34A-C-34A Out of range C-34-C-34A-Plan#2 Out of range C-35-C-35-C-35 Out of range C-35-C-35A-C-35A Out of range C-35-C-35B-C-35B Out of range C-36-C-36-C-36 Out of range C-36-C-36APB1 -C-36APB1 Out of range C-36A-C-36A-C-36A Out of range C-39-C-39-C-39 Out of range C-39-C-39A-C-39A Out of range C-39-C-39APB1 -C-39APB1 Out of range C-39-C-39PB1 -C-39PB1 Out of range C-41 -C-41 -C-41 Out of range C-41 -C-41A-C-41A Out of range C-41 -C-41A-Plan#7d Out of range C-41 -C-41APB1 -C-41APB1 Out of range CC-Min centre to center distance or covergent point,SF-min separation factor,ES-min ellipse separation 4/18/2012 1:57:59PM Page 3 of 17 COMPASS 2003.16 Build 73 Fail BAKER `"'' HUGHES Travelling Cylinder Report a, •••• I>i F INTEQ � Company: North America-ALASKA-BP Local Co-ordinate Reference: Well C-24 Project: Prudhoe Bay TVD Reference: Mean Sea Level Reference Site: PB C Pad MD Reference: C-24A:@ 65.72ft(C-24A:) Site Error: 0.00ft North Reference: True Reference Well: C-24 Survey Calculation Method: Minimum Curvature Well Error: 0.00ft Output errors are at 1.00 sigma Reference Wellbore C-24B Database: EDM .16-ANC Prod-WH24P Reference Design: Plan 3 Offset TVD Reference: Offset Datum Summary Reference Offset Centre to No-Go Allowable Measured Measured Centre Distance Deviation Warning Site Name Depth Depth Distance (ft) from Plan Offset Well-Wellbore-Design (ft) (ft) (ft) (ft) PB D Pad D-13-D-13A-D-13A 10,664.39 12,290.00 907.90 1,192.67 -283.39 FAIL-Major Risk CC-Min centre to center distance or covergent point,SF-min separation factor,ES-min ellipse separation 4/18/2012 1:57:59PM Page 4 of 17 COMPASS 2003.16 Build 73 C I r ? 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TRANSMITTA).ETTER CHECK IST Lr WELL NAME --2 PTD# 2 ( - Development Service Exploratory Stratigraphic Test Non-Conventional Well FIELD: Y/4-c f- '-e POOL: Check Box for Appropriate Letter/Paragraphs to be Included in Transmittal Letter CHECK ADD-ONS WHAT (OPTIONS) TEXT FOR APPROVAL LETTER APPLIES MULTI LATERAL The permit is for a new wellbore segment of existing well (If last two digits in Permit No. ,API No. 50- - - . API number are between 60-69) Production should continue to be reported as a function of the original API number stated above. PILOT HOLE In accordance with 20 AAC 25.005(f), all records, data and logs acquired for the pilot 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 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:9/09/2011 To co ami o. N N a) ❑ o E L 7 To c Q a C 7 O E °) a) n O a • L -a- La W (I) W ❑ co c cZ n. 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