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Home My WebLink About186051MEMORANDUM State of Alaska Alaska Oil and Gas Conservation Commission DATE:Wednesday, October 22, 2025 SUBJECT:Mechanical Integrity Tests TO: FROM:Bob Noble P.I. Supervisor Petroleum Inspector NON-CONFIDENTIAL Hilcorp North Slope, LLC A-35 PRUDHOE BAY UNIT A-35 Jim Regg InspectorSrc: Reviewed By: P.I. Suprv Comm ________ JBR 10/22/2025 A-35 50-029-21313-00-00 185-051-0 W SPT 8158 1850510 2040 852 855 853 854 0 0 0 0 4YRTST P Bob Noble 9/1/2025 30 MinPretestInitial15 Min Well Name Type Test Notes: Interval P/F Well Permit Number: Type Inj TVD PTD Test psi API Well Number Inspector Name:PRUDHOE BAY UNIT A-35 Inspection Date: Tubing OA Packer Depth 40 2315 2258 2242IA 45 Min 60 Min Rel Insp Num: Insp Num:mitRCN250904181713 BBL Pumped:5.2 BBL Returned:5.1 Wednesday, October 22, 2025 Page 1 of 1          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 R-27 Hilcorp North Slope, LLC 3800 Centerpoint Dr, Suite 1400, Anchorage, AK 99503 186-051 50-029-21557-00-00 9880 Conductor Surface Intermediate Production Liner 9238 80 2650 8957 1148 9460 20" 13-3/8" 9-5/8" 7" 8868 37 - 117 37 - 2687 35 - 8992 8730 - 9878 37 - 117 37 - 2686 35 - 8462 8237 - 9236 9803, Unknown 2670 4760 7020 9460, 9540, 9709 5380 6870 8160 9395 - 9650 5-1/2" 17# x 4-1/2" 12.6# L80 31 - 8788 8812 - 9035 Structural 5-1/2" TIW HBBP Packer 8681, 8195 8681 8195 Torin Roschinger Operations Manager Josh Stephens josh.stephens@hilcorp.com (907)777-8420 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 0028282 31 - 8286 N/A N/A 112 Well Not Online 9500 2192 714 750 1308 230 N/A 13b. Pools active after work:PRUDHOE OIL No SSSV Installed STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION REPORT OF SUNDRY WELL OPERATIONS Sr Pet Eng: Sr Pet Geo: Form 10-404 Revised 10/2022 Submit in PDF format to aogcc.permitting@alaska.gov Sr Res Eng: Due Within 30 days of Operations By Grace Christianson at 11:13 am, Aug 29, 2023 Digitally signed by Torin Roschinger (4662) DN: cn=Torin Roschinger (4662), ou=Users Date: 2023.08.28 15:43:46 -08'00' Torin Roschinger (4662) RBDMS JSB 083123 WCB 3-12-2024 DSR-8/29/23 ACTIVITY DATE SUMMARY 8/23/2023 ***WELL SHUT IN ON ARRIVAL*** (DRIFT, ADPERF) MIRU HES ELINE WIND SPEED READING ABOVE 30MPH MAINTENACE AND TOOL CHECKS FOR NEXT WELL WEATHER NOT IMPORVING POSTPONE JOB TO TOMORROW ***WELL SHUT IN ON DEPARTURE*** CONTINUE ON 24-AUG-2023 WSR 8/24/2023 ***WELL SHUT IN ON ARRIVAL*** CONTINUED FROM 23-AUG-23 WSR PT PCE 300PSI LOW, 3000PSI HIGH DRIFT 3.05" DMY GUN TO 9455 DEPTH CORRELATE TO SLB PERFORATION RECORD DATED 20-AUG-2018 PERFORATE 9395-9405 WITH 2.875" 6SPF 60PHASE HSC W/ MAXFORCE CHARGES CCL-TS=18.5', CCL STOP AT 9376.5' RDMO HES ELINE ***WELL SHUT IN ON DEPARTURE*** JOB COMPLETE Daily Report of Well Operations PBU R-27 PERFORATE 9395-9405 WITH 2.875" 6SPF 60PHASE HSC W/ MAXFORCE CHARGES