Department of Commerce, Community, and Economic Development
Alaska Oil and Gas Conservation
Commission
HOME
EVENTS
DATA
Data List
Drilling
Production
Orders
Data Miner
Document Search
REPORTS
Reports and Charts
Pool Statistics
FORMS
LINKS
Links
Test Notification
Data Requests
Regulations
Industry Guidance Bulletins
How to Apply
ABOUT US
History
Staff
HELP
Loading...
The URL can be used to link to this page
Your browser does not support the video tag.
Home
My WebLink
About
2020 Oooguruk-Torok Oil Pool
Annual Reservoir Surveillance Report Oooguruk-Torok Oil Pool (OTOP) Oooguruk Field April 1, 2021 Eni Petroleum – Alaska Reservoir Table of Contents SUBJECT PAGE 1.0 Progress of the Enhanced Recovery Project ................................................................................ 1 2.0 Results and Analysis of Reservoir Pressure Surveys within the Pool ........................................... 2 3.0 Results and Analysis of Production and Injection Log Surveys, Tracer Surveys, Observation Well Surveys and Any Other Special Monitoring ................................................................................. 3 4.0 Review of Pool Production Allocation Factors and Issues Over the Year ..................................... 3 5.0 Reservoir Management Summary .............................................................................................. 4 ATTACHMENTS ATTACHMENT A OTOP Well Location Map .............................................................................................. 5 ATTACHMENT B 2020 OTOP Voidage Balance by Month ........................................................................ 6 ATTACHMENT C December 2020 OTOP Reservoir Pressure Map ............................................................ 7 ATTACHMENT D 2020 OTOP Form 10-412 Pressure Report .................................................................... 8 ATTACHMENT E OTOP Form 10-428 Annual Reservoir Properties Report .............................................. 9 ATTACHMENT F ODST-46 Pressure Monitoring and Daily Injection Volumes (AIO 37, Rule 9) ....................................................................................................................................... 10 Eni Petroleum, Alaska – Reservoir Page | 1 1.0 Progress of the Enhanced Recovery Project The Oooguruk Field (OF) is one of two Eni US Operating Co. Inc. (Eni) offshore-operated fields in Alaska. Three oil pools, the Torok, Kuparuk and Nuiqsut, are currently under development within the OF. The development consists of an offshore man-made gravel island, the Oooguruk Drillsite (ODS), located just east of the Colville River Delta in Harrison Bay. ODS production is delivered to the Oooguruk Tie-in Pad (OTP) via a buried subsea flowline bundle and onshore flowlines, metered, then transferred to Kuparuk River Unit (KRU) facilities, operated by ConocoPhillips Alaska, Inc. (CPAI), for final processing and transportation to the sales line. During 2020 low crude oil prices, lack of demand for oil, and the logistical interference of the COVID-19 pandemic resulted in budget cuts, production curtailments and project deferrals. Consistent with the 2019 Caelus Energy, LLC (Caelus) sale of the Oooguruk Unit (OU), subsequent OU contraction and operator designation of the northern OU to Eni and the southern OU to CPAI on August 4, 2020, on its own motion, the Alaska Oil and Gas Conservation Commission (AOGCC) proposed the Oooguruk-Torok Oil Pool (OTOP), as defined by Conservation Order No. 645 (CO 645), be contracted to conform to the acreage operated by Eni. The contraction is consistent with 20 AAC 25.460(a)(3) which restricts an area injection order to a single operator, and it became effective January 21, 2021 as detailed in CO 645A and Area Injection Order No. 37A (AIO 37A). The current OTOP development consists of two producing wells, ODST-39 and ODST-45A, and one injection well, ODST-46i. The locations of the existing OTOP wells, the contracted OTOP area, the current OU, and Oooguruk Torok Participating Area (OTPA) are shown in Attachment A. The Oooguruk project originally envisioned producing wells would ultimately utilize ESP completions in order to maximize drawdown and minimize gas lift and the associated KRU and hydraulic back-out effects. However, currently all producing wells, except one cycled pre- produced injector, ODSN-10, require gas lift to produce. Gas lift capacity is limited to approximately 15 MMSCFPD. The high gas lift rate coupled with approximately 10 MMSCFPD in combined OF formation gas increases the flowline pressure, reducing overall flowrates, and generates significant back-out cost at KRU, which is primarily constrained by gas compression capacity. These constraints result in backing out KRU fluid production when high total gas oil ratio (TGOR, includes formation and lift gas) OF fluids enter the system. Because of the hydraulic effects and KRU back-out all OF wells cannot be produced concurrently using gas lift. In 2020, on average, twelve of the 23 producing OF wells were on-line with TGOR ranking typically used to determine which wells to produce. Consequently, OTOP production was very limited during 2020 due to the high TGOR required to gas lift the lower productivity wells which produce at an average 49% watercut; additionally, recurring tubing hydrate blockages in ODST-45A limited its availability to produce. In 2019 and early 2020 Eni initiated rig repairs, maintenance and material purchases in preparation for planned OF workover and drilling programs. However, due to low crude oil prices, the reduced demand for oil, and the logistical interference of the COVID-19 pandemic no rig Eni Petroleum, Alaska – Reservoir Page | 2 workovers nor new drilling were conducted at the OF in 2020. Future ESP recompletions, including the OTOP wells, have been planned but have not been approved. A Partial Gas Processing (PGP) study has been initiated to determine the feasibility of installing on-site gas processing and compression equipment at OTP to mitigate gas processing constraints and reduce associated costs from CPF-3. During 2020 OTOP oil production was impacted by the Alyeska Pipeline (Alyeska) prorations due to high inventories, low crude oil prices, and reduced gas handling capacity at KRU facilities associated with their North Slope production curtailment. OTOP 2020 production was limited to 28 days in January and February with an average daily oil production rate of approximately 200 BOPD. Total oil production from the OTOP during 2020 was 5,756 barrels and is 997,188 barrels total through 2020. The 2020 annual average producing gas oil ratio and watercut were 771 SCF/STBO and 49%, respectively. The new 5-mile 12-inch seawater flowline from the KRU 30-inch low pressure seawater flowline to OTP, and the Seawater Injection System (SWIS) pump upgrade project at OTP and ODS were commissioned in 2020. The system started up in May 2020 allowing higher pressure and higher rate water injection at ODS. In June 2020 seawater injection was reestablished in ODST-46i and the well was monitored pursuant to the rules of Area Injection Order 37 (AIO 37). Attachment F, in compliance with AIO 37, Rule 9, details the well injection pressures and injection for the report period. Unfortunately, on July 25, 2020 ODST-46 developed tubing to inner annulus pressure communication and was shut-in and secured pending diagnostics and repairs. As a result, OTOP water injection was limited to 45 days in 2020, with a daily average water injection rate of 909 BWPD. Cumulative water injection in the OTOP during 2020 was 40,913 barrels and 839,137 barrels since the start of the project. In 2020 no gas was injected in the OTOP. Total gas injection in the OTOP is 171 Mscf since the start of the project. Attachment B details the 2020 monthly voidage for the OTOP. 2.0 Results and Analysis of Reservoir Pressure Surveys within the Pool Five pressure surveys were reported from three OTOP wells during 2020. The extended pressure build-ups in ODST-45A and ODST-39 coupled with the ODST-46i falloff data, suggest similar levels of depletion and continuity in the ODS OTOP development area. The average 2020 OTOP pressure at 5,000 ft TVDss is estimated at 2,100 psi. The OTOP Pressure Map, Attachment C, captures the OTOP pressures for December, 2020 including shut-in and producing wells. Refer to Attachment D for the reported pressures surveys and relevant data. Eni Petroleum, Alaska – Reservoir Page | 3 3.0 Results and Analysis of Production and Injection Log Surveys, Tracer Surveys, Observation Well Surveys and Any Other Special Monitoring Extended shut-in bottomhole pressure data from ODST-39, ODST-45A and ODST-46i indicate good communication in the reservoir as evidenced by the equalization of the pressures over time (refer to Attachments C and D). No additional surveillance logging or surveys were conducted in 2020. 4.0 Review of Pool Production Allocation Factors and Issues Over the Year Production from the Oooguruk-Torok Oil Pool (OTOP), Oooguruk-Kuparuk Oil Pool (OKOP) and Oooguruk-Nuiqsut Oil Pool (ONOP) is commingled at the surface into a common production line. Allocation between the pools is based on the ratio of total production for a pool to the total production for the Oooguruk Unit. The pool allocation factors for 2020 are: ONOP: 92.7% OKOP: 7.1% OTOP: 0.2% Theoretical production for individual wells for all pools is calculated on a daily basis. During 2020 wells were produced with chokes at 100% most of the time due to the capacity of the production line. Daily theoretical production for a well was calculated using the data from the most current well test and the amount of time a well was on production for a given day: oductionlDailyTheoreticaBOPDxDailyRate dayMinutes Minutes Welltest produced Pr)( 1440 The daily allocation factor for the unit is calculated by dividing the actual total production for the day by the sum of the theoretical daily production for each individual well. Daily allocated production is assigned to each well by multiplying its theoretical daily production by the daily allocation factor. The average daily allocation factor for 2020 was 0.9947. Eni Petroleum, Alaska – Reservoir Page | 4 5.0 Reservoir Management Summary The AOGCC issued pool rules under Conservation Orders No. 645A, 596 and 597 for the OTOP, OKOP and the ONOP, respectively. While there is no subsurface commingling, unitized substances produced from the three oil pools are commingled on the surface. Area injection orders (AIOs) authorizing the injection of fluids for enhanced oil recovery in the Oooguruk-Torok, Oooguruk-Kuparuk, and Oooguruk-Nuiqsut reservoirs were issued by the AOGCC as AIO No. 37A, 33 and 34, respectively. Injection commenced into the OTOP in 2012. The OTOP reservoir management targets maximizing oil production, managing producing gas oil ratios (GOR) and maximizing long term reservoir performance and value through enhanced recovery while minimizing the project risks and maintaining the highest environmental and safety standards. Flood throughput and reliable water supply are critical to long-term OTOP recovery. The main recovery mechanism for all three OF reservoirs is waterflood. During 2018 and 2019 KRU seawater supply to the OF was very limited and then shut-off completely on July 4, 2019. Consequently, Eni constructed an alternate seawater injection supply (SWIS) enhancement project. Water for injection was not available from July 2019 thru April 2020 due to construction of SWIS infrastructure. Start-up was delayed due to logistical interference associated with the COVID-19 pandemic. The SWIS project, commissioned in May 2020, will supply ODS with up to 25,000 bpd of seawater, increase water injection reliability, and avoid the detrimental alternative of KRU produced water injection. Additionally, water injection supply pressures will be boosted from 2,800 psi to 3,700 psi, which will significantly increase injectivity and flood throughput in certain wells. The AOGCC has approved increasing the pressure limit to 3,700 psi from 2,800 psi for both the Nuiqsut and Kuparuk pools; the Torok limit currently remains at 2,800 psi consistent with Rule 4 of AIO 37A; a request for the AOGCC to modify AIO 37A to increase the Torok limit to 3,700 psi is in progress. Reservoir management included maximizing voidage replacement by maintaining water injection in the ODST-46i well when available. On July 25, 2020 ODST-46 developed tubing to inner annulus pressure communication and was shut-in and secured pending diagnostics and repairs. The current cumulative OTOP voidage replacement ratio is at 32%. A simulation model has been maintained and updated to assist in development and flood management decisions in the OTOP. Eni Petroleum – Alaska Reservoir Page | 5 ATTACHMENT A OTOP Well Location Map Eni Petroleum, Alaska – Reservoir Page | 6 ATTACHMENT B 2020 OTOP Voidage Balance by Month Month Oil, MRB Free Gas, MRB Water, MRB Total Voidage, MRB Year Cum, MRB Cum since start-up, MRB Gas, MRB Water, MRB Total Injection, MRB Year Cum, MRB Cum. since start-up, MRB Net Injection, MRB Year Cum, MRB Cum since start-up, MRB Cum Since Start-Up thru 2019 >>3,127 Cum Since Start-Up thru 2019 >>962 -2,164 Jan-20 5.6 3.6 4.5 13.7 13.7 3,140 0 0 0 0 962 -14 -14 -2,178 Feb-20 0.7 0.6 0.9 2.3 16.0 3,143 0 0 0 0 962 -2 -16 -2,180 Mar-20 0 0.0 0.0 0.0 16.0 3,143 0 0 0 0 962 0 -16 -2,180 Apr-20 0 0.0 0.0 0.0 16.0 3,143 0 0 0 0 962 0 -16 -2,180 May-20 0 0.0 0.0 0.0 16.0 3,143 0 0 0 0 962 0 -16 -2,180 Jun-20 0 0.0 0.0 0.0 16.0 3,143 0 18 18 18 981 18 3 -2,162 Jul-20 0 0.0 0.0 0.0 16.0 3,143 0 22 22 41 1003 22 25 -2,139 Aug-20 0 0.0 0.0 0.0 16.0 3,143 0 0 0 41 1003 0 25 -2,139 Sep-20 0 0.0 0.0 0.0 16.0 3,143 0 0 0 41 1003 0 25 -2,139 Oct-20 0 0.0 0.0 0.0 16.0 3,143 0 0 0 41 1003 0 25 -2,139 Nov-20 0 0.0 0.0 0.0 16.0 3,143 0 0 0 41 1003 0 25 -2,139 Dec-20 0 0.0 0.0 0.0 16.0 3,143 0 0 0 41 1,003 0 25 -2,139 2020 Totals 6.3 4.2 5.4 16.0 0 41 41 25 Produced Fluids Injected Fluids Net Injection Eni Petroleum, Alaska – Reservoir Page | 7 ATTACHMENT C December 2020 OTOP Reservoir Pressure Map Eni Petroleum – Alaska Reservoir Page | 8 ATTACHMENT D 2020 OTOP Form 10-412 Pressure Report 6. Oil Gravity: 25 8. Well Name and Number: 9. API Number 50XXXXXXXXXXXX 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) ODST-45A 50703206310000 O 576175 Torok 4944 - 5117 2/14/2020 12,254 PBU 125 4,820 1,913 5,000 0.45 1,993 ODST-46 50703206310000 WI 576175 Torok 4902 - 5005 6/11/2020 8,246 PFO 59 -13.5 304 5,000 0.40 2,309 ODST-39 50703205720000 O 576175 Torok 4952 - 5009 12/15/2020 7,804 PBU 119 4,618 1,639 5,000 0.37 1,780 ODST-45A 50703206310000 O 576175 Torok 4944 - 5117 12/15/2020 7,245 PBU 125 4,820 1,955 5,000 0.45 2,035 ODST-46 50703206310000 WI 576175 Torok 4902 - 5005 12/15/2020 3,430 PFO 55 -13.5 458 5,000 0.40 2,463 Oooguruk Oooguruk-Torok Undefined 5150 0.7 Printed Name Keith Lopez Date April 1, 2021 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 Production Engineer Eni US Operating Company Inc. (Eni US)3700 Centerpoint Drive, Suite 500, Anchorage, AK 99503 3. Unit or Lease Name:4. Field and Pool:5. Datum Reference:7. Gas Gravity: STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION RESERVOIR PRESSURE REPORT 1. Operator:2. Address: Eni Petroleum – Alaska Reservoir Page | 9 ATTACHMENT E OTOP Form 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) 576175 Torok 5000 135 19 4 52 3 - 5 3 - 5 2250 2250 2100 24 0.7 175 70 1.2 1.2 0.7 250 - 550 771 Keith Lopez STATE OF ALASKA ALASKA OIL AND GAS CONSERVATION COMMISSION ANNUAL RESERVOIR PROPERTIES REPORT 1. Operator:2. Address: Eni US Operating Company Inc. (Eni US)3700 Centerpoint Drive, Suite 500, Anchorage AK 99503 Date I hereby certify that the foregoing is true and correct to the best of my knowledge. Signature Title Production Engineer 4/1/2021Printed Name Eni Petroleum – Alaska Reservoir Page | 10 ATTACHMENT F ODST-46 Pressure Monitoring and Daily Injection Volumes (AIO 37, Rule 9) Inj Pressure IA Pressure OA Pressure GAS INJ (mscfd) WATER INJ (bbl/d) 2020 PI_27210C PI_27210G PI_27210H AVM AVM MONTH D A Y MIN MAX AVG MIN MAX AVG MIN MAX AVG Daily Total Daily Total January 1 372 373 372 403 404 404 66 66 66 0 0 January 2 371 372 372 403 404 403 66 67 67 0 0 January 3 370 372 371 402 403 402 67 67 67 0 0 January 4 370 371 370 401 402 401 67 67 67 0 0 January 5 369 370 370 400 401 401 67 67 67 0 0 January 6 369 370 370 400 400 400 67 67 67 0 0 January 7 369 370 369 400 401 400 66 67 67 0 0 January 8 369 370 370 400 401 401 67 69 68 0 0 January 9 369 370 369 400 401 401 69 69 69 0 0 January 10 368 369 369 399 401 400 69 69 69 0 0 January 11 367 369 368 398 400 399 69 69 69 0 0 January 12 367 368 367 398 399 399 69 70 69 0 0 January 13 367 367 367 398 399 398 70 70 70 0 0 January 14 367 367 367 397 398 398 70 71 70 0 0 January 15 366 367 367 397 398 398 70 71 71 0 0 January 16 365 367 366 397 398 398 71 71 71 0 0 January 17 364 366 365 395 397 396 71 71 71 0 0 January 18 364 365 364 395 396 396 71 72 71 0 0 January 19 363 364 364 394 396 395 71 72 71 0 0 January 20 362 364 363 394 395 394 71 71 71 0 0 January 21 362 363 363 394 394 394 71 72 72 0 0 January 22 362 363 363 393 394 393 72 72 72 0 0 January 23 362 363 362 393 393 393 72 72 72 0 0 January 24 362 363 362 391 393 393 72 72 72 0 0 January 25 361 362 362 391 392 391 71 72 72 0 0 January 26 361 362 361 392 394 393 72 73 73 0 0 January 27 360 361 361 391 394 392 72 73 73 0 0 January 28 360 360 360 389 391 390 71 72 72 0 0 January 29 359 360 359 389 390 389 71 72 72 0 0 January 30 358 359 358 390 392 391 72 74 73 0 0 January 31 358 358 358 392 392 392 74 74 74 0 0 February 1 358 358 358 390 392 391 74 74 74 0 0 February 2 357 358 358 389 390 390 74 74 74 0 0 Eni Petroleum, Alaska – Reservoir Page | 11 February 3 357 357 357 389 389 389 74 74 74 0 0 February 4 356 357 356 389 390 390 74 75 75 0 0 February 5 355 356 356 389 390 390 75 75 75 0 0 February 6 355 356 356 388 389 388 75 76 75 0 0 February 7 354 356 355 388 389 389 75 76 76 0 0 February 8 354 355 355 387 388 387 75 75 75 0 0 February 9 354 355 355 387 389 388 75 77 76 0 0 February 10 354 355 355 389 389 389 77 77 77 0 0 February 11 353 354 354 387 389 388 76 77 76 0 0 February 12 353 354 354 387 388 388 77 77 77 0 0 February 13 353 354 354 387 388 387 77 77 77 0 0 February 14 352 353 353 387 387 387 77 78 77 0 0 February 15 352 352 352 387 387 387 78 78 78 0 0 February 16 351 352 352 387 387 387 78 78 78 0 0 February 17 350 352 351 387 387 387 78 79 79 0 0 February 18 350 351 350 386 387 387 79 80 79 0 0 February 19 349 350 350 385 387 386 79 80 80 0 0 February 20 349 350 350 384 385 384 79 79 79 0 0 February 21 349 350 349 384 384 384 79 80 80 0 0 February 22 349 350 349 383 384 384 80 80 80 0 0 February 23 348 349 348 383 384 383 80 80 80 0 0 February 24 348 349 348 383 383 383 80 81 80 0 0 February 25 347 348 347 383 385 384 80 82 81 0 0 February 26 347 347 347 382 384 383 81 82 81 0 0 February 27 346 347 347 382 383 383 81 82 82 0 0 February 28 346 347 346 380 382 381 81 82 81 0 0 February 29 345 346 345 380 381 380 81 82 81 0 0 March 1 344 345 345 380 381 380 81 82 82 0 0 March 2 344 345 345 379 380 380 82 82 82 0 0 March 3 343 345 344 378 380 379 81 82 81 0 0 March 4 343 344 343 378 378 378 81 82 82 0 0 March 5 342 344 343 378 378 378 81 82 82 0 0 March 6 342 343 342 378 379 378 82 83 82 0 0 March 7 341 342 342 378 379 378 83 83 83 0 0 March 8 341 341 341 377 378 378 83 83 83 0 0 March 9 341 341 341 377 378 377 83 83 83 0 0 March 10 340 341 341 376 377 377 83 83 83 0 0 March 11 340 341 341 376 377 376 83 84 83 0 0 March 12 339 341 340 376 376 376 83 84 84 0 0 March 13 338 340 339 376 376 376 84 85 85 0 0 March 14 339 340 339 375 376 376 85 86 85 0 0 March 15 338 339 339 375 376 375 85 86 85 0 0 March 16 337 338 338 375 375 375 85 86 86 0 0 Eni Petroleum, Alaska – Reservoir Page | 12 March 17 336 338 337 374 375 375 86 86 86 0 0 March 18 336 337 337 374 374 374 86 87 86 0 0 March 19 336 337 336 374 374 374 87 87 87 0 0 March 20 335 336 336 373 374 373 87 88 87 0 0 March 21 335 336 335 373 373 373 87 88 88 0 0 March 22 335 336 335 372 373 372 88 88 88 0 0 March 23 335 336 335 372 372 372 87 88 88 0 0 March 24 335 335 335 372 372 372 88 88 88 0 0 March 25 334 335 335 371 372 371 88 89 88 0 0 March 26 334 335 334 371 371 371 88 89 88 0 0 March 27 333 335 334 370 371 370 88 89 88 0 0 March 28 333 334 333 369 370 370 88 88 88 0 0 March 29 332 333 333 369 370 369 88 88 88 0 0 March 30 332 333 332 369 369 369 88 89 89 0 0 March 31 332 332 332 369 369 369 89 89 89 0 0 April 1 331 332 332 368 369 369 89 90 89 0 0 April 2 331 332 331 368 369 368 90 90 90 0 0 April 3 331 331 331 368 368 368 90 90 90 0 0 April 4 330 331 331 368 368 368 90 91 90 0 0 April 5 329 331 329 367 368 368 91 91 91 0 0 April 6 327 329 328 366 367 366 90 91 91 0 0 April 7 327 328 327 365 366 366 91 91 91 0 0 April 8 327 328 328 365 365 365 91 91 91 0 0 April 9 328 328 328 364 365 364 91 91 91 0 0 April 10 326 328 327 364 364 364 91 91 91 0 0 April 11 326 327 327 364 364 364 91 92 91 0 0 April 12 325 327 326 363 364 364 92 92 92 0 0 April 13 325 326 326 363 364 363 92 93 93 0 0 April 14 325 326 325 363 363 363 93 93 93 0 0 April 15 324 325 325 362 363 363 93 93 93 0 0 April 16 324 324 324 362 363 362 93 94 94 0 0 April 17 324 325 324 361 362 362 93 94 94 0 0 April 18 323 325 324 359 361 360 93 94 93 0 0 April 19 322 324 323 361 363 362 94 95 95 0 0 April 20 322 323 322 362 363 362 95 96 95 0 0 April 21 321 322 322 361 362 361 95 96 95 0 0 April 22 321 323 322 361 361 361 96 96 96 0 0 April 23 321 322 322 360 361 361 96 96 96 0 0 April 24 320 321 321 360 360 360 96 96 96 0 0 April 25 321 322 321 359 360 359 96 96 96 0 0 April 26 320 321 321 358 359 359 96 97 97 0 0 April 27 319 321 320 358 359 358 97 97 97 0 0 April 28 319 320 319 358 358 358 97 97 97 0 0 Eni Petroleum, Alaska – Reservoir Page | 13 April 29 318 319 319 357 358 357 97 97 97 0 0 April 30 318 319 318 357 357 357 97 97 97 0 0 May 1 317 318 318 356 357 356 97 98 97 0 0 May 2 317 319 318 356 356 356 98 98 98 0 0 May 3 317 318 317 356 356 356 98 98 98 0 0 May 4 316 317 317 355 356 356 98 98 98 0 0 May 5 316 318 317 355 356 355 98 99 99 0 0 May 6 317 318 317 355 355 355 99 99 99 0 0 May 7 316 317 317 354 355 355 99 99 99 0 0 May 8 315 316 316 354 355 354 99 100 99 0 0 May 9 314 354 317 354 354 354 99 100 100 0 0 May 10 315 317 316 354 354 354 100 100 100 0 0 May 11 314 316 315 354 354 354 100 101 100 0 0 May 12 314 314 314 353 354 353 100 100 100 0 0 May 13 314 315 314 353 353 353 100 101 101 0 0 May 14 314 315 314 353 353 353 101 101 101 0 0 May 15 313 314 313 352 353 352 101 101 101 0 0 May 16 313 314 313 352 352 352 101 102 101 0 0 May 17 312 313 312 351 352 352 101 102 102 0 0 May 18 312 312 312 351 352 351 102 102 102 0 0 May 19 311 312 312 351 351 351 102 102 102 0 0 May 20 311 312 312 350 351 351 102 102 102 0 0 May 21 311 312 311 350 350 350 102 102 102 0 0 May 22 310 311 311 350 350 350 102 103 102 0 0 May 23 309 311 310 349 350 349 103 103 103 0 0 May 24 309 310 310 349 349 349 103 103 103 0 0 May 25 309 310 310 348 349 348 103 103 103 0 0 May 26 309 310 309 348 348 348 103 104 103 0 0 May 27 308 309 309 347 348 348 104 104 104 0 0 May 28 308 310 309 347 348 347 104 104 104 0 0 May 29 308 309 308 346 347 346 104 104 104 0 0 May 30 308 309 308 345 346 346 104 104 104 0 0 May 31 307 308 308 345 345 345 104 104 104 0 0 June 1 307 308 307 345 345 345 104 104 104 0 0 June 2 307 308 307 344 345 344 104 104 104 0 0 June 3 306 307 307 344 344 344 104 105 104 0 0 June 4 306 307 306 344 344 344 104 105 105 0 0 June 5 306 307 307 343 344 344 105 105 105 0 0 June 6 306 307 306 343 343 343 105 105 105 0 0 June 7 305 306 306 343 343 343 105 105 105 0 0 June 8 305 306 306 343 343 343 105 106 105 0 0 June 9 305 306 305 343 344 344 106 106 106 0 0 June 10 304 305 304 342 343 343 106 106 106 0 0 Eni Petroleum, Alaska – Reservoir Page | 14 June 11 303 1,634 1,087 289 431 332 106 408 267 0 515 June 12 1,635 1,746 1,697 277 291 284 408 426 420 0 633 June 13 1,746 1,855 1,783 282 344 304 426 506 461 0 851 June 14 1,808 1,964 1,881 344 405 362 500 556 517 0 1,059 June 15 1,877 2,002 1,945 405 425 418 550 563 557 0 1,216 June 16 2,003 2,091 2,046 417 429 422 541 555 547 0 1,164 June 17 2,091 2,125 2,109 408 429 417 528 548 537 0 1,097 June 18 2,115 2,160 2,138 403 420 408 521 533 525 0 1,046 June 19 2,160 2,194 2,179 418 425 421 530 538 533 0 1,007 June 20 2,194 2,231 2,211 398 420 407 511 531 519 0 974 June 21 2,226 2,297 2,265 403 440 413 515 543 522 0 1,004 June 22 2,297 2,357 2,324 439 449 444 539 549 544 0 1,001 June 23 2,357 2,388 2,374 441 472 456 540 564 550 0 1,025 June 24 2,373 2,391 2,381 447 468 462 535 556 550 0 965 June 25 2,391 2,451 2,415 426 447 436 517 536 526 0 995 June 26 2,451 2,488 2,472 445 466 460 531 545 538 0 1,066 June 27 1,507 2,498 2,057 422 501 451 337 545 455 0 352 June 28 1,396 2,359 2,039 501 680 613 416 591 526 0 737 June 29 1,869 2,378 2,294 607 660 645 416 543 525 0 883 June 30 2,377 2,401 2,392 654 671 665 525 544 537 0 901 July 1 2,366 2,395 2,379 650 695 662 521 556 530 0 811 July 2 2,216 2,453 2,389 695 738 718 557 598 576 0 858 July 3 2,185 2,341 2,262 738 778 762 598 620 613 0 1,041 July 4 2,326 2,376 2,354 769 799 781 608 634 620 0 950 July 5 2,363 2,398 2,384 758 802 781 597 631 615 0 882 July 6 2,353 2,390 2,366 775 798 788 605 627 616 0 857 July 7 2,350 2,378 2,371 753 780 763 583 607 592 0 804 July 8 2,347 2,378 2,363 780 801 790 604 622 613 0 845 July 9 2,350 2,401 2,371 765 789 776 586 608 597 0 880 July 10 1,860 2,464 2,349 653 765 713 454 586 541 0 771 July 11 1,782 2,509 2,339 652 1,106 864 422 566 514 0 966 July 12 1,987 2,555 2,469 1,106 1,331 1,198 510 567 554 0 1,037 July 13 2,500 2,534 2,523 1,331 1,481 1,428 567 636 606 0 898 July 14 2,501 2,528 2,520 1,462 1,476 1,467 614 630 620 0 844 July 15 2,206 2,527 2,493 1,439 1,499 1,471 589 617 607 0 773 July 16 2,517 2,595 2,548 1,499 1,615 1,567 611 670 643 0 1,053 July 17 2,518 2,546 2,530 1,566 1,620 1,602 623 671 656 0 1,123 July 18 2,536 2,557 2,547 1,561 1,607 1,580 618 650 631 0 1,066 July 19 2,548 2,573 2,565 1,565 1,611 1,600 612 652 642 0 1,042 July 20 2,538 2,638 2,600 1,519 1,577 1,545 572 612 591 0 1,079 July 21 2,628 2,655 2,644 1,550 1,601 1,577 586 622 607 0 1,118 July 22 2,259 2,718 2,655 1,576 1,676 1,632 574 641 613 0 1,083 July 23 2,503 2,705 2,678 1,675 1,711 1,693 635 653 644 0 974 Eni Petroleum, Alaska – Reservoir Page | 15 July 24 2,079 2,676 2,542 1,697 1,810 1,722 532 671 635 0 618 July 25 1,728 2,589 2,013 1,422 1,974 1,777 401 644 488 0 50 July 26 1,712 1,987 1,819 1,822 1,870 1,857 335 434 371 0 0 July 27 1,575 1,712 1,639 1,861 1,866 1,864 298 335 315 0 0 July 28 1,475 1,575 1,522 1,854 1,861 1,857 273 298 285 0 0 July 29 1,399 1,475 1,435 1,848 1,854 1,851 256 273 264 0 0 July 30 1,338 1,399 1,367 1,843 1,848 1,846 242 256 249 0 0 July 31 1,285 1,338 1,312 1,838 1,843 1,841 231 242 236 0 0 August 1 1,240 1,285 1,262 1,832 1,838 1,835 221 231 226 0 0 August 2 1,204 1,240 1,221 1,827 1,832 1,830 212 221 216 0 0 August 3 1,170 1,204 1,186 1,822 1,827 1,825 205 212 209 0 0 August 4 1,140 1,170 1,154 1,818 1,823 1,820 199 205 202 0 0 August 5 1,111 1,140 1,125 1,814 1,819 1,816 193 199 196 0 0 August 6 1,085 1,111 1,098 1,810 1,814 1,812 188 193 191 0 0 August 7 1,060 1,085 1,073 1,806 1,810 1,808 184 188 186 0 0 August 8 1,037 1,060 1,049 1,802 1,806 1,804 180 184 182 0 0 August 9 1,018 1,037 1,028 1,798 1,802 1,800 176 180 178 0 0 August 10 998 1,018 1,008 1,794 1,798 1,796 173 176 175 0 0 August 11 980 998 989 1,791 1,795 1,793 170 173 171 0 0 August 12 961 980 971 1,788 1,791 1,790 167 170 169 0 0 August 13 944 961 953 1,785 1,788 1,786 165 167 166 0 0 August 14 928 944 936 1,782 1,785 1,783 162 165 164 0 0 August 15 914 928 921 1,778 1,782 1,780 160 162 161 0 0 August 16 900 914 907 1,776 1,778 1,777 158 160 159 0 0 August 17 885 900 892 1,773 1,776 1,775 156 158 157 0 0 August 18 873 885 879 1,772 1,774 1,773 154 156 155 0 0 August 19 860 873 866 1,770 1,772 1,771 153 154 153 0 0 August 20 848 861 854 1,769 1,770 1,770 151 153 152 0 0 August 21 837 848 842 1,768 1,769 1,769 150 151 151 0 0 August 22 825 837 831 1,767 1,768 1,768 149 150 149 0 0 August 23 815 825 820 1,766 1,767 1,767 148 149 148 0 0 August 24 809 1,625 863 1,760 1,811 1,765 147 175 153 0 0 August 25 838 868 851 1,762 1,764 1,763 147 154 150 0 0 August 26 823 838 830 1,763 1,764 1,763 145 147 146 0 0 August 27 813 824 818 1,763 1,763 1,763 144 145 145 0 0 August 28 802 813 808 1,762 1,763 1,762 143 144 144 0 0 August 29 793 802 798 1,761 1,762 1,762 142 143 143 0 0 August 30 784 793 788 1,760 1,761 1,761 141 142 142 0 0 August 31 775 785 780 1,759 1,760 1,760 140 141 141 0 0 September 1 767 775 771 1,758 1,759 1,759 140 141 140 0 0 September 2 759 768 763 1,757 1,759 1,758 139 140 140 0 0 September 3 752 760 756 1,757 1,758 1,757 139 139 139 0 0 September 4 746 753 749 1,756 1,757 1,756 138 139 139 0 0 Eni Petroleum, Alaska – Reservoir Page | 16 September 5 739 746 743 1,756 1,756 1,756 138 138 138 0 0 September 6 732 739 736 1,755 1,756 1,755 137 138 138 0 0 September 7 726 733 729 1,754 1,755 1,755 137 137 137 0 0 September 8 719 726 723 1,754 1,754 1,754 136 137 137 0 0 September 9 714 720 717 1,753 1,754 1,754 136 136 136 0 0 September 10 708 714 711 1,753 1,754 1,753 136 136 136 0 0 September 11 702 708 705 1,752 1,753 1,753 135 136 136 0 0 September 12 696 702 699 1,752 1,752 1,752 135 135 135 0 0 September 13 690 696 693 1,751 1,752 1,752 135 135 135 0 0 September 14 685 691 688 1,751 1,751 1,751 135 135 135 0 0 September 15 679 685 682 1,750 1,751 1,750 134 135 134 0 0 September 16 674 680 677 1,749 1,750 1,750 134 134 134 0 0 September 17 669 675 672 1,749 1,750 1,749 134 134 134 0 0 September 18 664 669 666 1,748 1,749 1,748 133 134 133 0 0 September 19 659 664 662 1,747 1,748 1,748 133 133 133 0 0 September 20 655 659 657 1,746 1,747 1,747 133 133 133 0 0 September 21 650 655 652 1,746 1,747 1,746 132 133 133 0 0 September 22 645 650 648 1,745 1,746 1,745 132 133 132 0 0 September 23 641 645 643 1,744 1,745 1,745 132 132 132 0 0 September 24 636 641 639 1,744 1,745 1,744 132 132 132 0 0 September 25 632 636 634 1,744 1,744 1,744 132 132 132 0 0 September 26 628 632 630 1,744 1,744 1,744 132 132 132 0 0 September 27 624 628 626 1,744 1,744 1,744 132 132 132 0 0 September 28 620 624 622 1,743 1,744 1,743 132 132 132 0 0 September 29 616 620 618 1,743 1,744 1,743 132 132 132 0 0 September 30 613 617 614 1,743 1,743 1,743 131 132 132 0 0 October 1 609 613 611 1,742 1,743 1,743 131 132 131 0 0 October 2 605 609 607 1,742 1,743 1,743 131 132 132 0 0 October 3 602 606 604 1,742 1,743 1,742 131 132 131 0 0 October 4 597 602 600 1,742 1,742 1,742 131 132 131 0 0 October 5 594 597 596 1,742 1,742 1,742 131 132 131 0 0 October 6 591 594 593 1,742 1,742 1,742 131 131 131 0 0 October 7 588 591 590 1,741 1,742 1,742 131 131 131 0 0 October 8 584 588 586 1,741 1,742 1,741 131 131 131 0 0 October 9 582 585 583 1,741 1,741 1,741 131 131 131 0 0 October 10 579 582 581 1,741 1,741 1,741 131 131 131 0 0 October 11 576 579 578 1,741 1,741 1,741 131 131 131 0 0 October 12 573 577 575 1,741 1,741 1,741 131 131 131 0 0 October 13 571 574 572 1,741 1,741 1,741 131 131 131 0 0 October 14 568 571 570 1,740 1,741 1,741 131 131 131 0 0 October 15 566 568 567 1,740 1,741 1,741 131 131 131 0 0 October 16 563 566 564 1,740 1,741 1,741 131 131 131 0 0 October 17 560 563 562 1,740 1,741 1,741 131 131 131 0 0 Eni Petroleum, Alaska – Reservoir Page | 17 October 18 558 561 559 1,740 1,741 1,740 131 131 131 0 0 October 19 556 558 557 1,740 1,741 1,740 131 131 131 0 0 October 20 553 556 555 1,740 1,741 1,740 131 131 131 0 0 October 21 551 554 552 1,740 1,740 1,740 131 131 131 0 0 October 22 548 551 550 1,740 1,741 1,740 131 131 131 0 0 October 23 546 549 547 1,740 1,741 1,741 131 131 131 0 0 October 24 543 546 544 1,740 1,741 1,740 131 131 131 0 0 October 25 541 543 542 1,740 1,741 1,741 131 131 131 0 0 October 26 538 541 540 1,741 1,741 1,741 131 131 131 0 0 October 27 536 539 537 1,740 1,741 1,740 131 131 131 0 0 October 28 534 537 535 1,740 1,741 1,741 131 131 131 0 0 October 29 400 534 533 1,738 1,741 1,740 130 131 131 0 0 October 30 530 532 531 1,739 1,740 1,740 130 130 130 0 0 October 31 528 530 529 1,739 1,740 1,740 130 130 130 0 0 November 1 526 528 527 1,739 1,740 1,740 130 131 130 0 0 November 2 524 526 525 1,739 1,740 1,740 131 131 131 0 0 November 3 522 524 523 1,739 1,740 1,739 130 131 130 0 0 November 4 520 522 521 1,738 1,739 1,738 130 130 130 0 0 November 5 518 520 519 1,738 1,739 1,738 130 130 130 0 0 November 6 516 518 517 1,738 1,739 1,738 130 130 130 0 0 November 7 515 516 515 1,738 1,739 1,738 130 131 130 0 0 November 8 513 515 514 1,738 1,738 1,738 130 131 130 0 0 November 9 510 513 512 1,738 1,738 1,738 130 131 130 0 0 November 10 509 511 509 1,737 1,738 1,738 130 130 130 0 0 November 11 507 509 508 1,737 1,738 1,737 130 130 130 0 0 November 12 505 507 506 1,737 1,737 1,737 130 130 130 0 0 November 13 503 505 504 1,737 1,737 1,737 130 130 130 0 0 November 14 501 504 502 1,737 1,737 1,737 130 130 130 0 0 November 15 500 502 501 1,737 1,737 1,737 130 130 130 0 0 November 16 498 500 499 1,736 1,737 1,737 130 130 130 0 0 November 17 496 498 497 1,737 1,737 1,737 130 131 131 0 0 November 18 495 497 496 1,736 1,737 1,737 130 131 131 0 0 November 19 493 495 494 1,736 1,737 1,736 130 131 130 0 0 November 20 491 493 492 1,736 1,736 1,736 130 131 131 0 0 November 21 490 492 491 1,736 1,736 1,736 131 131 131 0 0 November 22 488 490 489 1,736 1,736 1,736 130 131 131 0 0 November 23 487 489 488 1,735 1,736 1,736 130 131 130 0 0 November 24 485 487 486 1,736 1,736 1,736 131 131 131 0 0 November 25 484 486 485 1,736 1,737 1,736 131 131 131 0 0 November 26 482 484 483 1,736 1,736 1,736 131 131 131 0 0 November 27 481 483 482 1,736 1,736 1,736 131 132 131 0 0 November 28 479 481 480 1,736 1,736 1,736 131 132 132 0 0 November 29 478 480 479 1,735 1,736 1,736 131 132 132 0 0 Eni Petroleum, Alaska – Reservoir Page | 18 November 30 477 478 477 1,735 1,736 1,735 131 132 131 0 0 December 1 476 477 477 1,735 1,735 1,735 131 131 131 0 0 December 2 475 477 476 1,735 1,735 1,735 131 131 131 0 0 December 3 474 475 474 1,734 1,735 1,735 131 131 131 0 0 December 4 472 474 473 1,734 1,735 1,735 131 132 131 0 0 December 5 471 473 472 1,735 1,735 1,735 132 132 132 0 0 December 6 470 472 471 1,735 1,735 1,735 132 132 132 0 0 December 7 468 470 469 1,735 1,735 1,735 132 132 132 0 0 December 8 467 469 468 1,735 1,735 1,735 132 132 132 0 0 December 9 465 467 466 1,734 1,735 1,734 132 132 132 0 0 December 10 464 466 465 1,733 1,734 1,734 131 132 132 0 0 December 11 463 464 463 1,733 1,733 1,733 131 131 131 0 0 December 12 461 463 462 1,732 1,733 1,733 130 131 131 0 0 December 13 460 461 461 1,732 1,732 1,732 130 130 130 0 0 December 14 459 461 460 1,732 1,732 1,732 130 130 130 0 0 December 15 458 459 458 1,731 1,732 1,732 130 130 130 0 0 December 16 456 458 457 1,731 1,732 1,731 130 130 130 0 0 December 17 455 457 456 1,731 1,731 1,731 130 130 130 0 0 December 18 454 456 455 1,731 1,732 1,731 130 131 130 0 0 December 19 453 454 454 1,732 1,733 1,733 131 132 132 0 0 December 20 451 453 452 1,732 1,733 1,733 132 132 132 0 0 December 21 450 452 451 1,732 1,733 1,732 132 132 132 0 0 December 22 449 450 450 1,731 1,732 1,732 131 132 131 0 0 December 23 448 450 449 1,731 1,732 1,732 131 131 131 0 0 December 24 1 3,056 447 1 5,285 1,725 0 2,000 135 0 0 December 25 446 447 447 1,731 1,731 1,731 131 131 131 0 0 December 26 445 447 446 1,730 1,731 1,731 131 131 131 0 0 December 27 444 446 445 1,730 1,731 1,730 131 131 131 0 0 December 28 443 445 444 1,730 1,730 1,730 131 131 131 0 0 December 29 442 443 443 1,730 1,730 1,730 131 131 131 0 0 December 30 441 443 442 1,730 1,730 1,730 131 131 131 0 0 December 31 440 441 440 1,730 1,730 1,730 131 131 131 0 0 0 40,913 Notes for Highlighted Dates Above: 7/25/2020 Shut-in and secured well due to tubing by inner annulus communication. 12/24/2020 Performing X-mas tree inspection and testing per Eni well integrity policies. Inspect each tree flange connections, measuring gaps and bolt torque specifications. Pull hatch cover and install wireline valve with CH100 lubricator with TWCV plug, PT LRS lines, install TWCV plug in tubing hanger. Perform shell test; test swab and wing valves.
