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HomeMy WebLinkAbout2024 Colville River Unit March 25, 2025 Alaska Oil and Gas Conservation Commission 333 West 7th Avenue, Suite 100 Anchorage, AK 99501 RE: • 2024 Annual Reservoir Surveillance Report, Colville River Unit, Alpine Oil Pool • 2024 Reservoir Review Reports, Colville River Unit, Nanuq and Qannik Oil Pools • Form 10-412 for Alpine, Nanuq, and Qannik Oil Pools • Form 10-413 for Alpine, Nanuq, and Qannik Oil Pools • Form 10-428 for Alpine, Nanuq, and Qannik Oil Pools • 2024 Daily Production Allocation Factors • 2024 Safety Valve System Test Results, Colville River Unit Dear Commissioners, ConocoPhillips Alaska, Inc., as operator and sole working interest owner of the Colville River Unit, submits the 2024 annual surveillance reports and forms in accordance with their respective conservation orders (CO), as follows: • Alpine Oil Pool CO 443D, Rule 8 • Nanuq Oil Pool CO 562, Rules 7(f) and 10 • Qannik Oil Pool CO 605A, Rules 6(f) and 9 Sincerely, Jonathan Luk Manager Western North Slope Asset Development Jonathan Luk WNS Asset Development Manager ConocoPhillips Alaska, Inc. PO Box 100360 Anchorage, Alaska 99510-0360 Phone: (907) 263-4464 2024 Annual Reservoir Surveillance Report, Colville River Unit: Alpine Oil Pool 2024 Reservoir Review Reports, Colville River Unit: Nanuq and Qannik Oil Pools Form 10-412 for Alpine, Nanuq, and Qannik Oil Pools Form 10-413 for Alpine, Nanuq, and Qannik Oil Pools Form 10-428 for Alpine, Nanuq, and Qannik Oil Pools Safety Valve System Testing Results for 2024 Daily Production Allocation Factors for 2024 March 25, 2025 2024 CRU Reservoir Surveillance Report Table of Contents Alpine Oil Pool Annual Reservoir Surveillance Report ...................................................................................... 1 Nanuq Oil Pool Annual Reservoir Surveillance Report ..................................................................................... 4 Qannik Oil Pool Annual Reservoir Surveillance Report .................................................................................... 6 Attachment 1: Colville River Unit Map .................................................................................................................... 8 Attachment 2: Reservoir Pressures at Datum – Alpine Oil Pool .................................................................... 9 Attachment 2: Reservoir Pressures at Datum – Nanuq Oil Pool ................................................................ 10 Attachment 2: Reservoir Pressures at Datum – Qannik Oil Pool ................................................................ 11 Attachment 3: 10-412 Pressure Survey Results – Alpine Oil Pool ............................................................. 12 Attachment 3: 10-412 Pressure Survey Results – Nanuq Oil Pool............................................................. 18 Attachment 3: 10-412 Pressure Survey Results – Qannik Oil Pool ............................................................ 19 Attachment 4: 10-413 Report of Injection Project – Alpine Oil Pool ........................................................ 20 Attachment 4: 10-413 Report of Injection Project – Nanuq Oil Pool ....................................................... 21 Attachment 4: 10-413 Report of Injection Project – Qannik Oil Pool ...................................................... 22 Attachment 5: 10-428 Annual Reservoir Properties Report ......................................................................... 23 Attachment 6: CRU Daily Production Allocation Factors 2024 ................................................................... 24 Attachment 7: Results of Safety Valve System Test ........................................................................................ 25 2024 CRU Reservoir Surveillance Report 1 Alpine Oil Pool Annual Reservoir Surveillance Report ConocoPhillips Alaska, Inc., (CPAI) as Operator and sole working interest owner of the Colville River Unit (CRU), submits this Alpine Oil Pool Annual Reservoir Surveillance Report as required for the Alpine Oil Pool Conservation Order 443D, Rule 8. The Alpine Oil Pool includes the Alpine, Nanuq Kuparuk, Fiord Kuparuk, Fiord Nechelik, and Fiord West Kuparuk Participating Areas (PAs). Attachment 1 illustrates the current Colville River Unit boundary, participating areas, and surface facility pad locations. Overview, Enhanced Recovery, and Reservoir Management Summary A total of 198 active development wells have been drilled in the Alpine Oil Pool as of January 1, 2025: 154 in the Alpine PA (80 producers, 74 injectors), 13 in the Nanuq Kuparuk PA (6 producers, 7 injectors), 6 in the Fiord Kuparuk PA (3 producers, 3 injectors), 2 in Fiord West Kuparuk PA (1 injector and 1 producer), and 23 in the Fiord Nechelik PA (13 producers, 10 injectors). Three disposal wells were previously completed in an undefined pool in the Sadlerochit Group sediments below the Alpine Oil Pool. Reservoir management of the Alpine Oil Pool in 2025 will aim to maximize oil rate by: (1) targeting a pattern level injection/withdrawal ratio of one, (2) managing water alternating gas (WAG) injection to maximize recovery, (3) updating and ranking workover and peripheral development opportunities for optimum drilling rig utilization, and (4) identifying well stimulation candidates. WAG in this document refers to a water-alternating-gas flood using either a miscible (MWAG) or sub-miscible enriched gas (EWAG). These activities are expected to partially offset existing field decline. Future development for 2025 in the Alpine Oil Pool may include additional wells at CD2, CD4, or CD5 depending on rig usage/optimization. Development plans continue to support an enriched WAG flood primarily via line-drive horizontal well patterns. Additional drilling targets will be further matured to compete for rig time and planning work will be carried out accordingly. Reservoir Voidage Balance and Cumulative Status Cumulative voidage replacement ratio above 1.0 indicates that appropriate voidage is observed in the Alpine Oil Pool. 2024 CRU Reservoir Surveillance Report 2 The tables below summarize average daily injection and production rates, cumulative fluid volumes, and voidage balance as of January 1, 2025. Alpine Oil Pool 2024 Metrics Daily Average Rate Cumulative Volume Oil Production 25.4 MBOPD 632 MMSTB Gas Production 62.2 MMSCFD 772 BSCF Water Production 41.7 MBWPD 304 MMSTB Gas Injection 43.6 MMSCFD 691 BSCF Water Injection 63.6 MBWPD 999 MMSTB Alpine Oil Pool 2024 Voidage Balance Month Cumulative Injection / Withdrawal Ratio RVB/RVB Injection / Withdrawal Rate RVB/RVB January 1.03 0.67 February 1.03 0.80 March 1.03 0.88 April 1.03 0.83 May 1.03 0.79 June 1.03 0.84 July 1.03 0.86 August 1.03 0.83 September 1.03 0.92 October 1.03 0.92 November 1.03 0.84 December 1.03 0.77 Reservoir Pressures at Datum Map and Summary and Analysis of Reservoir Pressure Surveys A reservoir pressure survey map is presented in Attachment 2. The 10-412 report of reservoir pressures is Attachment 3. The Alpine pool reservoirs are continuously managed to maintain pattern pressures required for stable production and optimum EOR performance. One hundred and seven static pressure surveys were performed on Alpine pool wells in 2024. Downhole pressure gauges are installed in 15 Alpine pool production wells. The gauges provide information about flood response and demonstrate reservoir pressure during shut-in events. Reservoir pressures are also estimated from simulation models and from inflow performance analyses. Both approaches are calibrated with reservoir pressure measurements collected from static surveys. 2024 CRU Reservoir Surveillance Report 3 Results and Analysis of Production and Injection Log Surveys, Tracer Surveys, Observation Well Surveys and Special Monitoring Surveys None of these surveys were performed for the Alpine Oil Pool in 2024. Review of Production Allocation Factors See Attachment 6 for a graph of the 2024 CRU allocation factors. Results of Safety Valve System Testing Results from safety valve system tests performed in 2024 are listed in Attachment 7. 2024 CRU Reservoir Surveillance Report 4 Nanuq Oil Pool Annual Reservoir Surveillance Report ConocoPhillips Alaska, Inc., (CPAI) as Operator and sole working interest owner of the Colville River Unit (CRU), submits this Nanuq Oil Pool Annual Reservoir Review as required for the Nanuq Oil Pool Conservation Order 562, Rules 7(f) and 10. The Nanuq Oil Pool includes the Nanuq Nanuq Participating Area. Overview, Enhanced Recovery, and Reservoir Management Summary The Nanuq Oil Pool has been developed primarily from CD4 and includes nine wells in the Nanuq Nanuq PA (5 producers, 4 injectors) targeting WAG recovery. In 2024, enriched gas was injected into two injectors (CD4-214, CD4-291). Additional drilling targets will be further matured to compete for rig time and planning work will be carried out accordingly. Reservoir Voidage Balance and Cumulative Status The tables below summarize average daily injection and production rates, cumulative fluid volumes, and voidage balance as of January 1, 2025. Nanuq Oil Pool 2024 Metrics Daily Average Rate Cumulative Volume Oil Production 0.8 MBOPD 6.8 MMSTB Gas Production 2.0 MMSCFD 11.8 BSCF Water Production 0.0 MBWPD 0.5 MMSTB Gas Injection 1.0 MMSCFD 3.2 BSCF Water Injection 0.3 MBWPD 12.9 MMSTB Nanuq Oil Pool 2024 Voidage Balance Month Cumulative Injection / Withdrawal Ratio RVB/RVB Injection / Withdrawal Rate RVB/RVB January 1.0 1.0 February 1.0 1.2 March 1.0 1.3 April 1.0 1.0 May 1.0 0.7 June 1.0 0.1 July 1.0 0.0 August 1.0 0.0 September 1.0 0.0 October 1.0 0.0 November 1.0 0.0 December 1.0 0.0 2024 CRU Reservoir Surveillance Report 5 Reservoir Pressures at Datum Map and Summary and Analysis of Reservoir Pressure Surveys Please see Attachment 2 for the 2024 reservoir pressures at datum map. See Attachment 3 for the 10-412 report of reservoir pressures. Results and Analysis of Production and Injection, Temperature, Tracer Surveys, Observation Well Surveys, and Special Monitoring Surveys None of these surveys were performed for the Nanuq Oil Pool in 2024. Review of Production Allocation Factors See Attachment 6 for a graph of the 2024 CRU allocation factors. Results of Safety Valve System Testing Results from safety valve system tests performed in 2024 are listed in Attachment 7. 2024 CRU Reservoir Surveillance Report 6 Qannik Oil Pool Annual Reservoir Surveillance Report ConocoPhillips Alaska, Inc., (CPAI) as Operator and sole working interest owner of the Colville River Unit (CRU), submits this Qannik Oil Pool Annual Reservoir Review as required for the Qannik Oil Pool Conservation Order 605A, Rules 6(f) and 9. The Qannik Oil Pool includes the Qannik and Narwhal Participating Areas (PAs). Overview, Enhanced Recovery, and Reservoir Management Summary The Qannik PA has been developed from ten wells (7 producers and 3 injectors). The ongoing recovery scheme involves waterflood from inboard injection wells supplemented with a natural gas cap expansion drive from the east. Waterflood response has been observed in the Qannik zone, and flood surveillance is ongoing as pressure maintenance and enhanced recovery continue. The Qannik PA was expanded in 2021 to include CD4-499, which is a step out from existing development at CD2. Additional drilling targets may be considered as rig optimization/utilization dictates. The Narwhal PA is currently developed through 8 wells: four producers and four injectors. Future development plans include four producers and two injectors. The Qannik PA is currently utilizing waterflood injection only, with additional support from gas cap expansion from the flanks. The Narwhal PA is currently utilizing water injection only and will be managed by MWAG in the future. MWAG refers to a water-alternating-gas flood using either a miscible gas or sub-miscible enriched gas. Significant oil production rate benefits and increased ultimate recovery estimates have been observed due to enhanced oil recovery processes. Reservoir Voidage Balance and Cumulative Status The tables below summarize average daily injection and production rates, cumulative fluid volumes, and voidage balance as of January 1, 2025. Voidage replacement in the Qannik PA reservoir relies on water injection and gas cap expansion from the flanks. Data includes Narwhal PA production and injection. Narwhal PA activity specific to injectors is also reported in the ERIO6 Narwhal Pilot Injection Progress Report. Qannik Oil Pool 2024 Metrics Daily Average Rate Cumulative Volume Oil Production 8.5 MBOPD 13.7 MMSTB Gas Production 6.3 MMSCFD 11.1 BSCF Water Production 0.4 MBWPD 1.1 MMSTB Gas Injection 0.0 MMSCFD 0.0 BSCF Water Injection 8.2 MBWPD 16.1 MMSTB 2024 CRU Reservoir Surveillance Report 7 Qannik Oil Pool 2024 Voidage Balance Reservoir Pressure at Datum Map and Summary and Analysis of Reservoir Pressure Surveys Please see Attachment 2 for the 2024 reservoir pressures at datum map. See Attachment 3 for the report of reservoir pressures. Results and Analysis of Production and Injection, Temperature, Tracer Surveys, Observation Well Surveys, and Special Monitoring Surveys The following surveys were performed for the Narwhal PA. Well Name Survey Type Survey Date CD4-539 PPROF 1/24/2024 CD4-588 IPROF 3/22/2024 CD4-536 PPROF 4/20/2024 CD4-586 PPROF 3/3/2024 CD4-586 PPROF 5/18/2024 CD4-597 IPROF 5/20/2024 CD4-594 IPROF 5/21/2024 CD4-587 PPROF 6/15/2024 Review of Production Allocation Factors and Issues See Attachment 6 for a graph of the 2024 CRU allocation factors. Results of Safety Valve System Testing Results from safety valve system tests performed in 2024 are listed in Attachment 7. Month Cumulative Injection / Withdrawal Ratio RVB/RVB Injection / Withdrawal Rate RVB/RVB January 0.7 0.5 February 0.7 0.5 March 0.7 0.4 April 0.7 0.6 May 0.7 0.7 June 0.7 0.8 July 0.7 0.8 August 0.7 0.7 September 0.7 0.5 October 0.7 0.6 November 0.7 0.7 December 0.7 0.7 2024 CRU Reservoir Surveillance Report 8 Attachment 1: Colville River Unit Map 2024 CRU Reservoir Surveillance Report 9 Attachment 2: Reservoir Pressures at Datum – Alpine Oil Pool 2024 CRU Reservoir Surveillance Report 10 Attachment 2: Reservoir Pressures at Datum – Nanuq Oil Pool 2024 CRU Reservoir Surveillance Report 11 Attachment 2: Reservoir Pressures at Datum – Qannik Oil Pool 2024 CRU Reservoir Surveillance Report 12 Attachment 3: 10-412 Pressure Survey Results – Alpine Oil Pool Mar-25-2025 2024 CRU Reservoir Surveillance Report 13 Attachment 3: 10-412 Pressure Survey Results – Alpine Oil Pool (Continued) Mar-25-2025 2024 CRU Reservoir Surveillance Report 14 Attachment 3: 10-412 Pressure Survey Results – Alpine Oil Pool (Continued) Mar-25-2025 2024 CRU Reservoir Surveillance Report 15 Attachment 3: 10-412 Pressure Survey Results – Alpine Oil Pool (Continued) Mar-25-2025 2024 CRU Reservoir Surveillance Report 16 Attachment 3: 10-412 Pressure Survey Results – Alpine Oil Pool (Continued) Mar-25-2025 2024 CRU Reservoir Surveillance Report 17 Attachment 3: 10-412 Pressure Survey Results – Alpine Oil Pool (Continued) 6. Oil Gravity: 40 8. Well Name and Number: 9. API Number 50XXXXXXXXXXX X NO DASHES 10. Type See Instructions 11. AOGCC Pool Code 12. Zone 13. Perforated Intervals Top - Bottom TVDSS 14. Final Test Date 15. Shut- In Time, Hours 16. Press. Surv. Type (see instructions for codes) 17. B.H. Temp. 18. Depth Tool TVDSS 19. Final Observed Pressure at Tool Depth 20. Datum TVDSS (input) 21. Pressure Gradient, psi/ft. 22. Pressure at Datum (cal) CD5-316 50103207560000 WAG 120100 NANKUP 7400 - 7348 3/2/2024 288 SBHP 125 6,234 3,660 7,000 0.440 3,997 CD5-316 50103207560000 WAG 120100 NANKUP 7400 - 7348 2/24/2024 120 SBHP 122 6,234 3,723 7,000 0.440 4,060 3. Unit or Lease Name:4. Field and Pool:5. Datum Reference:7. Gas Gravity: Colville River Unit Colville River / Alpine Oil 7,000' SS 0.81 STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION RESERVOIR PRESSURE REPORT 1. Operator:2. Address: ConocoPhillips Alaska, Inc.P.O. Box 100360, Anchorage, AK 99501-0360 23. All tests reported herein were made in accordance with the applicable rules, regulations and instructions of the Alaska Oil and Gas Conservation Commission. I hereby certify that the foregoing is true and correct to the best of my knowledge. Signature Title WNS Base Performance Supervisor Printed Name Alexandra Caldelas Date Mar-25-2025 2024 CRU Reservoir Surveillance Report 18 Attachment 3: 10-412 Pressure Survey Results – Nanuq Oil Pool 6. Oil Gravity: 40 8. Well Name and Number: 9. API Number 50XXXXXXXXXXX X NO DASHES 10. Type See Instructions 11. AOGCC Pool Code 12. Zone 13. Perforated Intervals Top - Bottom TVDSS 14. Final Test Date 15. Shut- In Time, Hours 16. Press. Surv. Type (see instructions for codes) 17. B.H. Temp. 18. Depth Tool TVDSS 19. Final Observed Pressure at Tool Depth 20. Datum TVDSS (input) 21. Pressure Gradient, psi/ft. 22. Pressure at Datum (cal) CD4-209 50103205320000 WAG 120175 NANUQ 6191 - 6145 7/4/2024 1,728 SBHP 115 6,112 3,387 6,150 0.294 3,398 CD4-211 50103205380000 O 120175 NANUQ 6194 - 6155 9/7/2024 216 SBHP 129 5,970 1,711 6,150 0.294 1,764 CD4-289 50103206970000 WAG 120175 NANUQ 6179 - 6155 6/27/2024 1,536 SBHP 122 6,092 3,747 6,150 0.294 3,764 CD4-291 50103206720000 WAG 120175 NANUQ 6191 - 6159 6/16/2024 312 SBHP 117 5,976 4,216 6,150 0.294 4,267 Printed Name Alexandra Caldelas Date ConocoPhillips Alaska, Inc.P.O. Box 100360, Anchorage, AK 99501-0360 23. All tests reported herein were made in accordance with the applicable rules, regulations and instructions of the Alaska Oil and Gas Conservation Commission. I hereby certify that the foregoing is true and correct to the best of my knowledge. Signature Title WNS Base Performance Supervisor 3. Unit or Lease Name:4. Field and Pool:5. Datum Reference:7. Gas Gravity: Colville River Unit Colville River / Nanuq Oil 6,150' SS 0.85 STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION RESERVOIR PRESSURE REPORT 1. Operator:2. Address: Mar-25-2025 2024 CRU Reservoir Surveillance Report 19 Attachment 3: 10-412 Pressure Survey Results – Qannik Oil Pool 6. Oil Gravity: 30 8. Well Name and Number: 9. API Number 50XXXXXXXXXXXX NO DASHES 10. Type See Instruction s 11. AOGCC Pool Code 12. Zone 13. Perforated Intervals Top - Bottom TVDSS 14. Final Test Date 15. Shut- In Time, Hours 16. Press. Surv. Type (see instructions for codes) 17. B.H. Temp. 18. Depth Tool TVDSS 19. Final Observed Pressure at Tool Depth 20. Datum TVDSS (input) 21. Pressure Gradient, psi/ft. 22. Pressure at Datum (cal) CD4-587 50103208670000 O 120180 NARWHAL 4116 - 4043 9/30/2024 768 SBHP 89 3,942 1,482 4,000 0.340 1,502 CD4-588 50103208530000 WAG 120180 NARWHAL 4289 - 4017 10/6/2024 480 SBHP 81 3,749 1,825 4,000 0.440 1,936 CD2-463 50103205770000 O 120180 QANNIK 4039 - 4023 9/4/2024 168 SBHP 87 3,911 998 4,000 0.340 1,028 CD2-464 50103205740000 O 120180 QANNIK 4043 - 4025 9/5/2024 192 SBHP 87 4,034 855 4,000 0.340 843 CD2-465 50103205830000 O 120180 QANNIK 4030 - 4020 9/11/2024 336 SBHP 86 4,005 1,229 4,000 0.340 1,227 CD2-466 50103205760000 WI 120180 QANNIK 4024 - 4003 5/12/2024 6,228 SBHP 71 3,364 1,967 4,000 0.451 2,254 CD2-468 50103205870000 O 120180 QANNIK 4028 - 4021 5/12/2024 3,689 SBHP 85 3,881 992 4,000 0.322 1,030 CD2-469 50103205800000 O 120180 QANNIK 4041 - 4012 9/6/2024 216 SBHP 88 4,016 997 4,000 0.340 991 CD2-470 50103205810000 O 120180 QANNIK 4047 - 4026 11/17/2024 3,792 SBHP 87 4,041 1,450 4,000 0.340 1,436 ConocoPhillips Alaska, Inc.P.O. Box 100360, Anchorage, AK 99501-0360 7. Gas Gravity: Colville River Unit Colville River / Qannik Oil 4,000' SS 0.6 3. Unit or Lease Name:4. Field and Pool:5. Datum Reference: STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION RESERVOIR PRESSURE REPORT 1. Operator:2. Address: Printed Name Alexandra Caldelas Date 23. All tests reported herein were made in accordance with the applicable rules, regulations and instructions of the Alaska Oil and Gas Conservation Commission. I hereby certify that the foregoing is true and correct to the best of my knowledge. Signature Title WNS Base Performance Supervisor Mar-25-2025 2024 CRU Reservoir Surveillance Report 20 Attachment 4: 10-413 Report of Injection Project – Alpine Oil Pool 2024 Address Field and Pool + 17 - 20 + 10 - 18 + 0 - 0 + 4 - 6 + 0 - 0 (A) (B)0 (C) (A)+(B)+(C) (D) (E) (F) (D)+(E)+(F) (5.)-(6.) psia 7,000 Subsea Signature:Date: Printed Name:Title: I hereby certify that the foregoing is true and correct to the best of my knowledge. Alexandra Caldelas WNS Base Performance Supervisor TOTAL PRODUCED VOLUMES (reservoir barrels)44,650,642 1,482,016,784 NET INJECTED (+) OR PRODUCED (-) VOLUMES -9,416,411 35,411,946 Year end reservoir pressure Datum feet 3,300 Oil (Stock tank Bbls. X formation volume factor)13,279,599 903,717,476 16,118,961 274,620,498 Water (surface bbls.=reservoir bbls.)15,252,082 303,678,810 LPG (Surface bbls.=reservoir bbls.) Indicate type of LPG, Butane, Propane or other. 11,970,508 518,068,829 0 TOTAL FLUIDS INJECTED (reservoir bbls.)35,234,232 1,517,428,730 6. PRODUCED VOLUMES (Resevoir Barrels) 0 0 22,761,510 772,480,437 5. INJECTION VOLUMES (Resevoir Barrels) Annual Volume Cumulative since project start Water (surface bbls.=reservoir bbls.)23,263,724 999,359,901 66 64 9,286,433 631,970,263 As of Jan. 1, Total gas wells Gas wells added or subtracted As of Dec. 31, Total gas wells Annual volume gas produced Cumulative gas to date 0 0 0 0 4. PRODUCTION DATA As of Jan. 1, Total oil wells Oil wells added or subtracted As of Dec. 31, Total oil wells Annual volume oil and/or condensate produced Cumulative oil and/or condensate to date 27 19 15,960,677 690,758,438 3. LPG INJECTION DATA As of Jan. 1, active LPG inj. wells LPG inj. wells added or subtracted As of Dec. 31, Active LPG inj. wells Annual volume LPG inj.Cumulative LPG inj. to date 47 44 23,263,724 999,359,901 2. GAS INJECTION DATA As of Jan. 1, active gas inj. wells Gas inj. wells added or subtracted As of Dec. 31, active gas inj. Wells Annual volume gas inj.Cumulative gas inj. to date Type of Injection Project Name of Injection Project Number of Inj./Conservation Order Authorizing Project Miscible Water Alternating Gas Flood Alpine Oil Pool AIO 18D / CO 443D 1. WATER INJECTION DATA As of Jan. 1, active water inj. wells Water inj. wells added or subtracted As of Dec. 31, active water inj. Wells Annual volume water inj.Cumulative water inj. to date STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION ANNUAL REPORT OF INJECTION PROJECT FOR THE YEAR: 20 AAC 25.432 (2) Name of Operator ConocoPhillips Alaska, Inc.700 G Street, P.O. Box 100360, Anchorage, AK 99510 Unit or Lease Name Colville River Unit Alpine Oil Pool (inc. former Nanuk-Kup and Fiord Oil Pools) Gas (Z (Compressibilty factor) X Tr (reservoir temperature, oF absolute) X 14.65 Standard CF X volume factor v. where v= 5.615 cf/bbl. X Pr. (reservoir pressure, psia) X 520 (absolute equivalent at 60 oF ) Free Gas (Total gas produced in standard cubic feet less solution gas produced (Stock tank bbls. Oil produced X solution gas oil ratio) X volume factor v calculated for produced gas ) Mar-25-2025 2024 CRU Reservoir Surveillance Report 21 Attachment 4: 10-413 Report of Injection Project – Nanuq Oil Pool 2024 Address Field and Pool + 2 - 0 + 0 - 2 + 0 - 0 + 0 - 0 + 0 - 0 (A) (B)0 (C) (A)+(B)+(C) (D) (E) (F) (D)+(E)+(F) (5.)-(6.) psia 6,150 Subsea Signature:Date: Printed Name:Title: NET INJECTED (+) OR PRODUCED (-) VOLUMES -483,737 857,652 6,550 TOTAL PRODUCED VOLUMES (reservoir barrels) 389,888 4,699,668 12,940,86095,977 277,938 2,397,456 6. PRODUCED VOLUMES (Resevoir Barrels) 0 69,339 309,540 6,750,371 370,584 3,196,608 461,215 10,058,053 00 0 511,256 15,268,977 95,977 12,940,860 Water (surface bbls.=reservoir bbls.) Oil (Stock tank Bbls. X formation volume factor) 373,915 15,338,316TOTAL FLUIDS INJECTED (reservoir bbls.) Water (surface bbls.=reservoir bbls.) LPG (Surface bbls.=reservoir bbls.) Indicate type of LPG, Butane, Propane or other. I hereby certify that the foregoing is true and correct to the best of my knowledge. Alexandra Caldelas WNS Base Performance Supervisor 2,800 Year end reservoir pressure Datum feet 6 LPG inj. wells added or subtracted 0 Oil wells added or subtracted 4. PRODUCTION DATA Annual volume oil and/or condensate produced Annual Volume As of Dec. 31, Active LPG inj. wells Cumulative oil and/or condensate to date As of Dec. 31, Total oil wells Annual volume LPG inj. Cumulative since project start As of Jan. 1, Total gas wells 741,1820 6 As of Dec. 31, Total gas wells Annual volume gas produced Cumulative gas to dateGas wells added or subtracted 0 5. INJECTION VOLUMES (Resevoir Barrels) 11,802,380 As of Dec. 31, active gas inj. WellsAs of Jan. 1, active gas inj. wells Cumulative LPG inj. to date As of Jan. 1, Total oil wells Annual volume gas inj. 1. WATER INJECTION DATA 2. GAS INJECTION DATA Name of Operator As of Jan. 1, active LPG inj. wells 2 2 As of Jan. 1, active water inj. wells Unit or Lease Name Injection Order 28/Conservation Order 562 Gas inj. wells added or subtracted Water inj. wells added or subtracted Cumulative gas inj. to date Annual volume water inj. 0 3. LPG INJECTION DATA As of Dec. 31, active water inj. Wells 4 Colville River Unit Number of Inj./Conservation Order Authorizing Project Cumulative water inj. to date Miscible Water Alternating Gas Flood Name of Injection Project STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION ANNUAL REPORT OF INJECTION PROJECT 20 AAC 25.432 (2) FOR THE YEAR: ConocoPhillips Alaska, Inc.700 G Street, P.O. Box 100360, Anchorage, AK 99510-0360 Nanuq Oil Pool Type of Injection Project Nanuq Oil Pool Gas (Z (Compressibilty factor) X Tr (reservoir temperature, oF absolute) X 14.65 Standard CF X volume factor v. where v= 5.615 cf/bbl. X Pr. (reservoir pressure, psia) X 520 (absolute equivalent at 60oF ) Free Gas (Total gas produced in standard cubic feet less solution gas produced (Stock tank bbls. Oil produced X solution gas oil ratio) X volume factor v calculated for produced gas ) Mar-25-2025 2024 CRU Reservoir Surveillance Report 22 Attachment 4: 10-413 Report of Injection Project – Qannik Oil Pool 2024 Address Field and Pool + 0 - 0 + 0 - 0 + 0 - 0 + 2 - 0 + 0 - 0 (A) (B)0 (C) (A)+(B)+(C) (D) (E) (F) (D)+(E)+(F) (5.)-(6.) psia 4,000 Subsea Signature:Date: Printed Name:Title: Year end reservoir pressure Datum feet 1,300 I hereby certify that the foregoing is true and correct to the best of my knowledge. TOTAL PRODUCED VOLUMES (reservoir barrels)4,995,734 23,473,686 NET INJECTED (+) OR PRODUCED (-) VOLUMES -1,990,707 -7,363,968 Alexandra Caldelas WNS Base Performance Supervisor Oil (Stock tank Bbls. X formation volume factor)3,749,494 16,483,784 1,085,198 5,870,626 Water (surface bbls.=reservoir bbls.)161,042 1,119,275 LPG (Surface bbls.=reservoir bbls.) Indicate type of LPG, Butane, Propane or other.0 0 0 TOTAL FLUIDS INJECTED (reservoir bbls.)3,005,027 16,109,718 6. PRODUCED VOLUMES (Resevoir Barrels) 0 0 2,289,946 11,086,499 5. INJECTION VOLUMES (Resevoir Barrels) Annual Volume Cumulative since project start Water (surface bbls.=reservoir bbls.)3,005,027 16,109,718 9 11 3,124,578 13,736,487 As of Jan. 1, Total gas wells Gas wells added or subtracted As of Dec. 31, Total gas wells Annual volume gas produced Cumulative gas to date 0 0 0 0 4. PRODUCTION DATA As of Jan. 1, Total oil wells Oil wells added or subtracted As of Dec. 31, Total oil wells Annual volume oil and/or condensate produced Cumulative oil and/or condensate to date 0 0 0 0 3. LPG INJECTION DATA As of Jan. 1, active LPG inj. wells LPG inj. wells added or subtracted As of Dec. 31, Active LPG inj. wells Annual volume LPG inj.Cumulative LPG inj. to date 7 7 3,005,027 16,109,718 2. GAS INJECTION DATA As of Jan. 1, active gas inj. wells Gas inj. wells added or subtracted As of Dec. 31, active gas inj. Wells Annual volume gas inj.Cumulative gas inj. to date Type of Injection Project Name of Injection Project Number of Inj./Conservation Order Authorizing Project Water Flood (Narhwal PA will be WAG in the future)Qannik Oil Pool Injection Order 35/Conservation Order 605 1. WATER INJECTION DATA As of Jan. 1, active water inj. wells Water inj. wells added or subtracted As of Dec. 31, active water inj. Wells Annual volume water inj.Cumulative water inj. to date STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION ANNUAL REPORT OF INJECTION PROJECT FOR THE YEAR: 20 AAC 25.432 (2) Name of Operator ConocoPhillips Alaska, Inc.700 G Street, P.O. Box 100360, Anchorage, AK 99510-0360 Unit or Lease Name Colville River Unit Qannik Oil Pool Gas (Z (Compressibilty factor) X Tr (reservoir temperature, oF absolute) X 14.65 Standard CF X volume factor v. where v= 5.615 cf/bbl. X Pr. (reservoir pressure, psia) X 520 (absolute equivalent at 60 oF ) Free Gas (Total gas produced in standard cubic feet less solution gas produced (Stock tank bbls. Oil produced X solution gas oil ratio) X volume factor v calculated for produced gas ) Mar-25-2025 2024 CRU Reservoir Surveillance Report 23 Attachment 5: 10-428 Annual Reservoir Properties Report 3. Field and Pool Code: 4. Pool Name 5. Reference Datum (ft TVDSS) 6. Temperature (°F) 7. Porosity (%) 8. Permeability (md) 9. Swi (%)10. Oil Viscosity @ Original Pressure (cp) 11. Oil Viscosity @ Saturation Pressure (cp) 12. Original Pressure (psi) 13. Bubble Point or Dew Point Pressure (psi) 14. Current Reservoir Pressure (psi) 15. Oil Gravity (°API) 16. Gas Specific Gravity (Air = 1.0) 17. Gross Pay (ft) 18. Net Pay (ft) 19. Original Formation Volume Factor (RB/STB) 20. Bubble Point Formation Volume Factor (RB/STB) 21. Gas Compressibility Factor (Z) 22. Original GOR (SCF/STB) 23. Current GOR (SCF/STB) 120100 Alpine Oil 7000 160 17 10 25 .54 .51 3240 2454 3276 40 .81 65 55 1.44 1.469 0.81 810 2449 120175 Nanuq Oil 6150 135 16 5 34 .5 .473 2750 2821 2730 40 .85 180 47 1.46 1.46 .797 950 1825 120180 Qannik Oil 4000 89 21 13 35 2 2 1890 1850 1725 30 .6 40 12 1.2 1.2 .81 411 550 WNS Base Performance Supervisor STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION ANNUAL RESERVOIR PROPERTIES REPORT 1. Operator:2. Address: Alexandra Caldelas I hereby certify that the foregoing is true and correct to the best of my knowledge. Signature ConocoPhillips Alaska, Inc.P.O. Box 100360, Anchorage, AK 99501-0360 Printed Name Title Date Mar-25-2025 2024 CRU Reservoir Surveillance Report 24 Attachment 6: CRU Daily Production Allocation Factors 2024 Consistent with previous submissions, the annual turnaround is excluded from the graph due to a short -duration flush 2024 CRU Reservoir Surveillance Report 25 Attachment 7: Results of Safety Valve System Test 2024 CRU Reservoir Surveillance Report 26 Attachment 7: Results of Safety Valve System Test (Continued) 2024 CRU Reservoir Surveillance Report 27 Attachment 7: Results of Safety Valve System Test (Continued)