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Home My WebLink About2021 Oooguruk-Torok Oil PoolWE - 2fn1� us opera�i�nng Annual Reservoir Surveillance Report Oooguruk-Torok Oil Pool (OTOP) Oooguruk Field April 1, 2022 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 ........................................... 3 3.0 Results and Analysis of Production and Injection Log Surveys, Tracer Surveys, Observation Well Surveys and Any Other Special Monitoring................................................................................. 4 4.0 Review of Pool Production Allocation Factors and Issues Over the Year.....................................4 5.0 Reservoir Management Summary.............................................................................................. 5 ATTACHMENTS ATTACHMENT A OTOP Well Location Map .................................................... ATTACHMENT B 2021 OTOP Voidage Balance by Month ............................ ATTACHMENT C December 2021 OTOP Reservoir Pressure Map ............... ATTACHMENT D 2021 OTOP Form 10-412 Pressure Report ................................. ATTACHMENT E OTOP Form 10-428 Annual Reservoir Properties Report............ ATTACHMENT F ODST-46 Pressure Monitoring and Daily Injection Volumes (AIO 37, Rule 9)....................................................................................................... I..........................11 Eni Petroleum —Alaska Reservoir 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 Drill site (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. 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. During 2021, OF engineering and operational efforts were focused on optimizing and debottlenecking existing equipment, including separator control system performance, proportional fluid sampling maintenance and upgrades to both the daily and monthly production fluid samplers, and improving measurement system accuracy. Operations included general maintenance and replacement of critical oil, water, and gas piping and valves. Additional field - wide maintenance was also performed, including mechanical integrity inspections of piping and other safety systems. Routine maintenance was performed on the three power generation turbines and two gas injection compressors at the OTP, with one of the power generation turbines receiving a complete overhaul replacement. Compressors A and B were inspected to identify potential design flaws and asset integrity improvements. In addition, cathodic protection inspections were completed on the sub -sea production flowline from ODS to OTP to ensure mechanical integrity of the pipelines. Mandatory DOT hydrotesting was successfully performed on the 2-inch diesel flowline from OTP to ODS. A detailed monitoring plan for injection system microbes was established with three biocide treatments conducted during 2021. Minor capital projects included design studies to relocate the ODS and OTP control rooms, with ODS control room in process to be relocated, enhancing the ODS polar bear camera system, seawater injection line pig trap upgrades and adding a corrosion coupon to the ODS subsea diesel flowline. Several corrosion coupons were pulled at OTP and ODS for the monitoring plan. A conversion from the existing Siemens PCS7 Distributed Control System (DCS) to Emerson DeltaV has been approved with detailed engineering scheduled for 2022. Eni Petroleum, Alaska — Reservoir Page 11 Major capital projects included finalizing the commissioning and startup of the Seawater Injection System (SWIS) booster pump upgrade at ODS. SWIS started up in May 2020 allowing higher pressure, increased from 2,800 psi to 3,300 psi, and sustained higher seawater injection rates at ODS. The SWIS project was trigged by the conversion of the KRU CPF-3 HAMI line supply to produced water in 2019. SWIS was implemented to avoid life cycle production and reserve loss associated with injection of KRU produced water and to improve reliability. Since implementation, seawater supply has been consistently available at required volumes for reservoir management. Once fully implemented the ODS booster pump will further increase injection pressures, where needed and approved, up to 3,700 psi. The Oooguruk development originally envisioned producing wells would ultimately utilize electrical submersible pump (ESP) completions in order to maximize drawdown and minimize gas lift and the associated KRU and hydraulic back -out effects. However, currently all OF producing wells require gas lift to produce. Gas lift capacity is limited to approximately 20 MMSCFPD. The high gas lift rate coupled with approximately 4 to 12 MMSCFPD in combined OF formation gas significantly increases the flowline pressure, reducing overall flowrates, and generates significant back -out cost, at KRU, which is also primarily constrained by gas processing 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 2021, on average, twelve of the 22 available producing OF wells were on-line with TGOR ranking typically used to determine which wells to produce. Consequently, OTOP production was very limited during 2021 due to the high TGOR required to gas lift the lower productivity wells which produce at an average 50% to 60% water cut; additionally, recurring tubing hydrate blockages in ODST-45A limited its availability to produce. An engineering study was completed and approved to construct a 20 MMSCFD on site Partial Gas Processing (PGP) at OTP to mitigate gas processing constraints, reduce associated costs from KRU CPF-3, and unburden the CPF-3 gas treating and compression system. Detailed engineering began in June 2021 and startup is forecast for late 2023. In addition, an Electrical Power Sharing (EPS) feasibility study was also completed and approved to interconnect the Oooguruk and Nikaitchuq power generation systems to allow a more robust and efficient power system sharing between the two development projects. EPS startup is forecast in 2024. 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 workovers nor new drilling were conducted at the OF in 2021. Subsequently, rig mobilization, recommissioning of the Rig Support Complex (RSC) and workover planning have been reinitiated, including all three OTOP wells. OF rig activity is planned to start in mid-2022. Timing of the OTOP workovers is dependent on equipment availability and execution of other priority rig interventions and drilling activities. Currently, the plan is to install ESPs in both producing wells and restore integrity of the tubing in the ODST-46 injection well. Eni Petroleum, Alaska — Reservoir Page 12 OTOP 2021 production was very limited due to the high TGOR required to produce the wells utilizing gas lift and recurring tubing hydrate blockages in ODST-45A. ODST-45A was not produced during 2021 and ODST-39 was limited to 18 days of production, or 5% uptime. The average daily oil production rate was 268 BOPD. Total oil production from the OTOP during 2021 was 4,825 barrels and is 1,002,058 barrels total through 2021. The 2021 average producing gas oil ratio and watercut were 954 SCF/STBO and 62%, respectively. In June 2020 seawater injection was reestablished in ODST-46 and the well was monitored pursuant to the rules of Area Injection Order 37 (AIO 37). Unfortunately, on July 25, 2020 the well -developed tubing to inner annulus pressure communication and was shut-in; it remains secured pending diagnostics and repairs. As a result, OTOP water injection was not conducted in 2021 for enhanced recovery; injection into ODST-46 was limited to four days in association with the four-year casing integrity testing, which it passed. Attachment F, in compliance with NO 37, Rule 9, details the daily well injection pressures and injection volumes for the report period. Cumulative water injection in the OTOP during 2021 was 1,232 barrels and 840,369 barrels since the start of the project. In 2021 no gas was injected in the OTOP. Total gas injection in the OTOP is 171 MMscf since the start of the project. Attachment B details the 2021 monthly and cumulative 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 2021. The extended pressure build-ups in ODST-45A and ODST-39 coupled with the ODST-46i falloff data, continue to suggest similar levels of depletion and continuity within the ODS OTOP development area. The average 2021 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 2021; all three wells have been shut- in for an extended period. Refer to Attachment D for the reported pressures surveys and relevant data. Eni Petroleum, Alaska — Reservoir Page 13 3.0 Results and Analysis of Production and Injection Log Surveys, Tracer Surveys, Observation Well Surveys and Any Other Special Monitoring Extended shut-in bottom hole pressure data from ODST-39, ODST-45A and ODST-46i indicate good communication in the reservoir as evidenced by the equalization of the pressures overtime (refer to Attachments C and D). No additional surveillance logging or surveys were conducted in 2021. 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 2021 are: ONOP: 91.0% OKOP: 8.8% OTOP: 0.2% Theoretical production for individual wells for all pools is calculated daily. During 2021 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: Minutes produced 1440Minutes day xDailyRate(BOPD) w,11,,s, = TheoreticalDaily Production 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 2021 was 0.9281. Eni Petroleum, Alaska — Reservoir Page 14 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 OTOP, OKOP, and ONOP 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. Consequently, Eni implemented SWIS in 2020 and 2021 to avoid injecting KRU produced water, improve water supply reliability, and increase available injection pressures. SWIS uptime has been very high, successfully meeting OF reservoir injection targets and increasing supply pressure. Additionally, once the ODS booster pump is placed in-service, water injection supply pressures can be boosted from 3,300 psi to 3,700 psi, which will significantly increase injectivity and flood throughput in certain low injectivity wells. The AOGCC has approved increasing the pressure limit to 3,700 psi from 2,800 psi for both the ONOP and OKOP; however, the OTOP 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 planned once ODST-46 is repaired and on-line. The well historically has very low injectivity and would benefit. As discussed previously, due to the extended shut-in of the OTOP wells, injection and production were very limited in 2021. Consequently, the current cumulative OTOP voidage replacement ratio remains at 32%. An Eni simulation model has been maintained and updated to assist in future development and flood management decisions in the OTOP. The Annual Reservoir Properties Report (Form 10-428) is included as Attachment E. Eni Petroleum, Alaska — Reservoir Page 15 Q m G Q � F— p Z CW m C Q = J U Q � Q O H O ouauuuu ouoouuu ouo[Uuu oumuuu oU4a000 O O OULUUUU ou IODUU C C - C r v l E a aD S c 0 0 co c N cn o N � a 0 U rlrn m 0 In in 0 co N Q � 8 v c a o a _ o d c d w a a c z w O 0 O 0 — i0 0 O 10— O 3 W 0 0 7000b09 0009f09 0007.E09 0009Z09 0001+Z09 0000Z09 0009L09 m s C 0 m U H c Z 2 W m 2 (1) tLo a> a O O ri N O N m �.o �o io io �o io t.o to lD w m w Ln Ln m c c U '� cO G N N N N N N N N N N N N N C o E +' m r� V OJ U i= l0 lD lO lO lO lO lO lD lD lD lD l0 ri c-I c-I r-I c-I r-I ri ri ri c-I ri Y � Z C + .2 m Z Qj c 0 o 0 0 0 0 0 0 0 0 0 C O_ M Ln Ln Ln to to to In LO Ln M M M U = m O 0 0 0 O O O O O O O O O � C O O O O O O O O O O O O O U •�n � � ri r-1 c-I c-I c-I c-I c-I c-I ri r-I r-I' ri ri CO N N N N N N N N N N N N }U G 3 C' n _o m —, -' � � O O O O o O O O O O O Gl •� N c � L m C- :? 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WATER INJ (bbl/d) 2021 PI 27210C PI 2721OG PI 27210H AVM AVM MONTH DAY MIN MAX AVG MIN MAX AVG MIN MAX Avg Daily Total Daily Total January 1 439 440 440 1,729 1,730 1,730 131 131 131 0 0 January 2 1 438 439 438 1,729 1,730 1,729 131 131 131 0 0 January 3 437 438 437 1,729 1,729 1,729 131 131 131 0 0 January 4 436 437 436 1,729 1,729 1,729 131 131 131 0 0 January 5 435 436 435 1,729 1,729 1,729 131 131 131 0 0 January 6 433 435 434 1,729 1,729 1,729 131 131 131 0 0 January 7 432 434 433 1,728 1,729 1,728 130 131 131 0 0 January 8 432 433 432 1,728 1,728 1,728 130 131 131 0 0 January 9 430 432 431 1,728 1,728 1,728 130 130 130 0 0 January 10 429 431 430 1,728 1,728 1,728 130 131 130 0 0 January 11 428 429 429 1,728 1,728 1,728 131 131 131 0 0 January 12 427 428 428 1,727 1,728 1,728 131 131 131 0 0 January 13 426 427 427 1,727 1,728 1,727 131 131 131 0 0 January 14 426 426 426 1,727 1,728 1,727 131 131 131 0 0 January 15 424 426 425 1,727 1,727 1,727 131 131 131 0 0 January 16 423 424 424 1,727 1,727 1,727 131 131 131 0 0 January 17 422 423 423 1,727 1,727 1,727 131 131 131 0 0 January 18 421 423 422 1,727 1,727 1,727 131 131 131 0 0 January 19 420 421 421 1,727 1,727 1,727 131 131 131 0 0 January 20 420 421 420 1,727 1,727 1,727 131 131 131 0 0 January 21 418 420 419 1,233 1,727 1,709 131 131 131 0 0 January 22 419 420 419 1,727 1,728 1,727 131 132 132 0 0 January 23 418 1,522 877 1,697 1,782 1,730 132 370 217 0 207 January 24 1,522 1,634 1,597 1,664 1,697 1,677 370 402 391 0 376 January 25 1,567 1,637 1,609 1,644 1,688 1,662 395 403 398 0 327 January 26 1,105 2,037 1,588 1 2,502 1,681 341 514 411 0 322 January 27 735 1,104 854 1,684 1,726 1,708 211 340 254 0 0 January 28 651 735 687 1,726 1,744 1,736 182 211 194 0 0 January 29 610 651 629 1,744 1,755 1,750 167 181 174 0 0 January 30 584 610 596 1,755 1,761 1,758 158 167 163 0 0 January 31 567 584 576 1,761 1,765 1,763 152 158 155 0 0 Eni Petroleum -Alaska Reservoir Page 1 11 February 1 555 568 561 1,765 1 1,768 1,767 1 148 152 150 0 0 February 2 544 555 550 1,768 1,771 1,770 145 148 146 0 0 February 3 536 545 540 1,771 1,773 1,772 142 145 143 0 0 February 4 528 536 532 1,773 1,774 1,773 139 142 141 0 0 February 5 522 528 525 1,773 1,775 1,774 137 139 138 0 0 February 6 516 522 519 1,774 1,777 1,776 137 137 137 0 0 February 7 512 516 514 1,777 1,778 1,778 137 137 137 0 0 February 8 507 512 510 1,778 1,779 1,779 136 137 136 0 0 February 9 503 507 505 1,779 1,780 1,779 135 136 135 0 0 February 10 500 503 501 1,780 1,781 1,780 134 135 135 0 0 February 11 496 500 498 1,780 1,782 1,782 134 135 134 0 0 February 12 492 496 494 1,782 1,783 1,783 135 135 135 0 0 February 13 490 493 491 1,783 1,784 1,784 135 135 135 0 0 February 14 487 490 489 1,784 1,785 1,784 134 135 135 0 0 February 15 485 487 486 1,784 1,785 1,785 134 135 134 0 0 February 16 482 485 484 1,784 1,785 1,784 132 134 133 0 0 February 17 480 483 481 1,784 1,784 1,784 132 132 132 0 0 February 18 478 480 479 1,783 1,784 1,784 131 132 131 0 0 February 19 475 478 477 1,784 1,785 1,785 131 132 131 0 0 February 20 473 476 475 1,785 1,785 1,785 132 132 132 0 0 February 21 472 474 473 1,785 1,786 1,786 132 132 132 0 0 February 22 471 472 471 1,786 1,787 1,787 132 133 132 0 0 February 23 469 471 470 1,787 1,787 1,787 133 133 133 0 0 February 24 467 469 468 1,787 1,787 1,787 133 133 133 0 0 February 25 466 468 467 1,787 1,788 1,787 132 133 132 0 0 February 26 464 466 465 1,787 1,788 1,787 132 133 132 0 0 February 27 462 464 463 1,787 1,788 1,787 132 132 132 0 0 February 28 461 462 462 1,787 1,788 1,788 132 132 132 0 0 March 1 460 461 460 1,788 1,788 1,788 132 132 132 0 0 March 2 458 460 459 1,788 1,789 1,788 132 132 132 0 0 March 3 457 459 458 1,788 1,788 1,788 132 132 132 0 0 March 4 445 458 457 1,788 1,788 1,788 131 132 132 0 0 March 5 456 1,056 492 1,787 1,824 1,788 132 142 135 0 0 March 6 464 468 466 1,788 1,789 1,788 133 133 133 0 0 March 7 462 464 463 1,789 1,789 1,789 133 133 133 0 0 March 8 460 462 461 1,789 1,790 1,789 133 133 133 0 0 March 9 458 460 459 1,789 1,790 1,790 133 133 133 0 0 March 10 456 458 457 1,790 1,790 1,790 133 133 133 0 0 March 11 455 457 456 1,790 1,790 1,790 133 133 133 0 0 March 12 454 455 455 1,789 1,790 1,789 132 133 132 0 0 March 13 453 454 454 1,789 1,790 1,790 132 133 133 0 0 Eni Petroleum, Alaska - Reservoir Page 112 March 14 452 453 452 1,790 1,790 1,790 1 133 133 1 133 0 0 March 15 450 452 451 1,790 1,790 1,790 133 133 133 0 0 March 16 449 450 450 1,790 1,790 1,790 133 133 133 0 0 March 17 448 449 448 1,790 1,790 1,790 133 133 133 0 0 March 18 447 448 447 1,790 1,790 1,790 132 133 133 0 0 March 19 445 447 446 1,789 1,790 1,790 132 133 132 0 0 March 20 443 445 444 1,790 1,790 1,790 132 133 133 0 0 March 21 443 444 443 1,790 1,790 1,790 133 133 133 0 0 March 22 441 443 442 1,790 1,791 1,790 133 133 133 0 0 March 23 440 442 441 1,790 1,790 1,790 133 133 133 0 0 March 24 439 441 440 1,790 1,791 1,790 133 133 133 0 0 March 25 438 440 439 1,790 1,791 1,791 133 133 133 0 0 March 26 437 438 438 1,791 1,791 1,791 133 133 133 0 0 March 27 436 437 437 1,790 1,791 1,791 133 133 133 0 0 March 28 435 436 435 1,790 1,790 1,790 132 133 133 0 0 March 29 434 435 434 1,790 1,791 1,790 133 133 133 0 0 March 30 433 434 433 1,790 1,791 1,791 133 133 133 0 0 March 31 432 433 432 1,791 1,791 1,791 133 133 133 0 0 April 1 431 432 431 1,791 1,791 1,791 133 133 133 0 0 April 2 430 431 430 1,790 1,791 1,791 133 133 133 0 0 April 3 429 430 430 1,790 1,791 1,791 133 133 133 0 0 April 4 428 429 429 1,791 1,791 1,791 133 134 134 0 0 April 5 427 428 428 1,791 1,791 1,791 134 134 134 0 0 April 6 426 428 427 1,791 1,791 1,791 133 134 133 0 0 April 7 426 427 426 1,791 1,791 1,791 133 134 133 0 0 April 8 425 426 425 1,790 1,791 1,791 133 134 133 0 0 April 9 424 425 424 1,790 1,790 1,790 132 133 1 133 0 0 April 10 423 424 424 1,790 1,790 1,790 133 133 133 0 0 April 11 422 424 423 1,790 1,791 1,791 133 133 133 0 0 April 12 421 423 422 1,790 1,791 1,790 133 133 133 0 0 April 13 421 422 421 1,790 1,790 1,790 133 133 133 0 0 April 14 420 421 421 1,790 1,790 1,790 133 133 133 0 0 April 15 419 420 420 1,790 1,791 1,790 133 134 133 0 0 April 16 418 420 419 1,790 1,791 1,790 133 134 133 0 0 April 17 418 419 418 1,790 1,791 1,791 134 134 134 0 0 April 18 417 418 417 1,791 1,791 1,791 134 134 134 0 0 April 19 416 417 416 1,791 1,791 1,791 134 134 134 0 0 April 20 415 416 416 1,791 1,791 1,791 134 134 134 0 0 April 21 414 415 415 1,791 1,791 1,791 134 134 134 0 0 April 22 413 414 414 1,791 1,791 1,791 134 135 134 0 0 April 23 413 414 413 1,791 1,791 1,791 134 135 135 0 0 Eni Petroleum, Alaska - Reservoir Page 113 April 24 1 412 413 1 413 1,791 1 1,791 1,791 135 135 1 135 0 0 April 25 412 413 412 1,791 1,791 1,791 135 135 135 0 0 April 26 411 412 411 1,791 1,791 1,791 134 135 135 0 0 April 27 410 411 410 1,791 1,791 1,791 135 135 135 0 0 April 28 409 410 409 1,791 1,791 1,791 135 135 135 0 0 April 29 408 409 409 1,791 1,791 1,791 135 135 135 0 0 April 30 407 409 408 1,791 1,791 1,791 135 135 135 0 0 May 1 407 407 407 1,791 1,791 1,791 135 135 135 0 0 May 2 406 407 407 1,791 1,791 1,791 135 136 135 0 0 May 3 405 406 406 1,791 1,791 1,791 135 136 136 0 0 May 4 405 406 405 1,791 1,792 1,791 136 136 136 0 0 May 5 404 405 405 1,791 1,792 1,791 136 136 136 0 0 May 6 403 405 404 1,791 1,792 1,791 136 136 136 0 0 May 7 403 404 403 1,791 1,792 1,792 136 136 136 0 0 May 8 402 403 403 1,791 1,792 1,792 136 136 136 0 0 May 9 402 403 402 1,792 1,792 1,792 136 136 136 0 0 May 10 401 402 402 1,792 1,792 1,792 136 136 136 0 0 May 11 401 402 401 11792 1,792 1,792 136 137 137 0 0 May 12 400 401 401 1,792 1,792 1,792 137 137 137 0 0 May 13 399 401 400 1,792 1,792 1,792 137 137 137 0 0 May 14 399 400 399 1,792 1,792 1,792 137 137 137 0 0 May 15 398 399 399 1,792 1,794 1,793 137 139 138 0 0 May 16 398 399 398 1,794 1,794 1,794 139 139 139 0 0 May 17 397 398 398 1,794 1,794 1,794 139 139 139 0 0 May 18 397 398 397 1,794 1,794 1,794 139 139 139 0 0 May 19 396 397 397 1,794 1,794 1,794 139 139 139 0 0 May 20 396 397 396 1,794 1,795 1,794 139 140 139 0 0 May 21 396 397 397 1,794 1,795 1,794 139 140 140 0 0 May 22 396 397 396 1,794 1,795 1,794 140 140 140 0 0 May 23 395 396 396 1,794 1,795 1,795 140 140 140 0 0 May 24 395 395 395 1,794 1,795 1,795 140 140 140 0 0 May 25 394 395 395 1,794 1,795 1,795 140 140 140 0 0 May 26 394 395 394 1,794 1,795 1,794 140 140 140 0 0 May 27 393 394 394 1,794 1,795 1,795 140 140 140 0 0 May 28 393 394 393 1,795 1,795 1,795 140 140 140 0 0 May 29 392 393 393 1,795 1,795 1,795 140 141 140 0 0 May 30 391 393 392 1,795 1,795 1,795 140 141 140 0 0 May 31 391 392 391 1,795 1,795 1,795 140 141 141 0 0 June 1 390 391 391 1,795 1,795 1,795 141 141 141 0 0 June 2 390 391 390 1,795 1,795 1,795 141 141 141 0 0 June 3 389 390 390 1,795 1,795 1,795 141 141 1 141 0 0 Eni Petroleum, Alaska - Reservoir Page 114 June 4 388 389 389 1,795 1,795 1,795 1 141 141 1 141 0 0 June 5 388 389 388 1,795 1,795 1,795 141 141 141 0 0 June 6 388 388 388 1,795 1,795 1,795 141 141 141 0 0 June 7 387 388 388 1,795 1,795 1,795 141 141 141 0 0 June 8 387 388 387 1,795 1,795 1,795 141 141 141 0 0 June 9 386 387 386 1,795 1,795 1,795 141 141 141 0 0 June 10 385 386 386 1,795 1,795 1,795 141 142 141 0 0 June 11 385 386 385 1,795 1,795 1,795 141 142 142 0 0 June 12 384 385 385 1,795 1,796 1,795 142 142 142 0 0 June 13 383 384 384 1,795 1,795 1,795 142 142 142 0 0 June 14 383 384 383 1,795 1,795 1,795 142 142 142 0 0 June 15 382 383 383 1,795 1,796 1,795 142 142 142 0 0 June 16 382 383 382 1,795 1,796 1,796 142 142 142 0 0 June 17 381 382 382 1,795 1,796 1,796 142 142 142 0 0 June 18 381 382 381 1,795 1,796 1,796 142 142 142 0 0 June 19 380 381 381 1,795 1,796 1,796 142 142 142 0 0 June 20 379 380 380 1,795 1,796 1,796 142 142 142 0 0 June 21 379 380 380 1,795 1,796 1,796 142 142 142 0 0 June 22 379 380 380 1,796 1,796 1,796 142 143 142 0 0 June 23 379 380 379 1,796 1,796 1,796 142 143 143 0 0 June 24 378 379 379 1,796 1,796 1,796 142 143 142 0 0 June 25 378 379 379 1,796 1,796 1,796 142 143 142 0 0 June 26 378 379 378 1,795 1,796 1,796 142 143 142 0 0 June 27 378 378 378 1,795 1,796 1,796 142 143 143 0 0 June 28 377 378 378 1,795 1,796 1,796 142 143 143 0 0 June 29 377 378 378 1,795 1,795 1,795 142 142 142 0 0 June 30 377 378 377 1,795 1,795 1,795 142 142 142 0 0 July 1 377 377 377 1,795 1,795 1,795 142 142 142 0 0 July 2 376 377 377 1,795 1,795 1,795 142 142 142 0 0 July 3 376 377 376 1,795 1,795 1,795 142 142 142 0 0 July 4 376 376 376 1,795 1,795 1,795 142 142 142 0 0 July 5 375 376 376 1,795 1,795 1,795 142 143 143 0 0 July 6 375 375 375 1,795 1,795 1,795 142 143 143 0 0 July 7 374 375 375 1,795 1,796 1,795 142 143 143 0 0 July 8 374 375 374 1,796 1,796 1,796 143 143 143 0 0 July 9 374 375 374 1,796 1,796 1,796 143 143 143 0 0 July 10 373 374 374 1,795 1,796 1,796 143 143 143 0 0 July 11 373 374 373 1,796 1,796 1,796 143 143 143 0 0 July 12 372 373 373 1,796 1,796 1,796 143 144 143 0 0 July 13 372 373 373 1,796 1,796 1,796 143 144 144 0 0 July 14 371 372 372 1,795 1,796 1,796 143 143 143 0 0 Eni Petroleum, Alaska - Reservoir Page 115 July 15 1 370 371 1 371 1,795 1,796 1,796 1 143 143 143 0 0 July 16 370 370 370 1,795 1,796 1,796 143 144 143 0 0 July 17 369 370 370 1,796 1,796 1,796 144 144 144 0 0 July 18 370 370 370 1,796 1,796 1,796 144 144 144 0 0 July 19 369 370 370 1,796 1,797 1,796 144 145 144 0 0 July 20 369 370 369 1,796 1,797 1,797 145 145 145 0 0 July 21 368 369 369 1,796 1,797 1,796 144 145 144 0 0 July 22 368 369 369 1,796 1,796 1,796 144 144 144 0 0 July 23 368 369 368 1,796 1,796 1,796 144 144 144 0 0 July 24 368 368 368 1,796 1,796 1,796 144 144 144 0 0 July 25 367 368 368 1,796 1,796 1,796 144 144 144 0 0 July 26 366 368 367 1,796 1,796 1,796 144 144 144 0 0 July 27 365 366 366 1,796 1,796 1,796 144 144 144 0 0 July 28 364 368 366 1,795 1,796 1,796 144 144 144 0 0 July 29 365 366 366 1,796 1,797 1,796 144 145 145 0 0 July 30 364 366 365 1,796 1,797 1,797 145 145 145 0 0 July 31 364 365 365 1,797 1,797 1,797 145 145 145 0 0 August 1 364 364 364 1,797 1,797 1,797 145 146 145 0 0 August 2 363 364 364 1,796 1,797 1,797 145 145 145 0 0 August 3 362 364 363 1,796 1,797 1,796 145 145 145 0 0 August 4 362 363 363 1,796 1,796 1,796 145 145 145 0 0 August 5 362 363 362 1,796 1,796 1,796 145 145 145 0 0 August 6 362 363 362 1,796 1,796 1,796 145 145 145 0 0 August 7 361 362 361 1,796 1,796 1,796 145 145 145 0 0 August 8 360 362 361 1,796 1,796 1,796 145 145 145 0 0 August 9 361 362 362 1,796 1,796 1,796 145 145 145 0 0 August 10 361 362 361 1,796 1,796 1,796 145 145 145 0 0 August 11 360 361 361 1,796 1,796 1,796 145 145 145 0 0 August 12 360 361 360 1,796 1,796 1,796 145 145 145 0 0 August 13 359 360 360 1,796 1,796 1,796 145 145 145 0 0 August 14 358 360 359 1,796 1,796 1,796 145 145 145 0 0 August 15 358 359 358 1,796 1,797 1,796 145 145 145 0 0 August 16 358 359 359 1,796 1,797 1,796 145 145 145 0 0 August 17 358 359 358 1,796 1,797 1,796 145 145 145 0 0 August 18 357 358 358 1,796 1,797 1,796 145 146 145 0 0 August 19 357 358 358 1,797 1,797 1,797 146 146 146 0 0 August 20 357 357 357 1,797 1,797 1,797 146 146 146 0 0 August 21 357 357 357 1,797 1,797 1,797 146 146 146 0 0 August 22 356 357 357 1,797 1,797 1,797 146 146 146 0 0 August 23 356 357 356 1,797 1,797 1,797 146 146 146 0 0 August 24 356 356 356 1,797 1,797 1,797 146 146 146 0 0 Eni Petroleum, Alaska - Reservoir Page 116 August 25 355 356 356 1,797 1,797 1,797 1 146 146 1 146 0 0 August 26 354 356 355 1,797 1,797 1,797 146 146 146 0 0 August 27 354 355 355 1,797 1,797 1,797 146 146 146 0 0 August 28 354 355 354 1,797 1,797 1,797 146 146 146 0 0 August 29 354 355 354 1,797 1,797 1,797 146 146 146 0 0 August 30 353 354 354 1,797 1,797 1,797 146 147 146 0 0 August 31 353 354 353 1,797 1,797 1,797 146 147 147 0 0 September 1 353 353 353 1,797 1,797 1,797 146 147 147 0 0 September 2 352 353 352 1,797 1,797 1,797 146 147 147 0 0 September 3 232 853 377 1,795 1,829 1,798 146 155 148 0 0 September 4 365 373 367 1,797 1,797 1,797 147 149 147 0 0 September 5 363 365 364 1,797 1,797 1,797 147 147 147 0 0 September 6 361 363 362 1,797 1,797 1,797 147 147 147 0 0 September 7 360 361 360 1,797 1,798 1,797 147 147 147 0 0 September 8 358 360 359 1,797 1,798 1,798 147 147 147 0 0 September 9 357 359 358 1,798 1,798 1,798 147 147 147 0 0 September 10 357 358 357 1,797 1,798 1,798 147 147 147 0 0 September 11 356 357 356 1,797 1,798 1,797 147 147 147 0 0 September 12 355 356 356 1,797 1,798 1,797 147 147 147 0 0 September 13 355 356 355 1,797 1,798 1,797 147 147 147 0 0 September 14 355 356 355 1,796 1,797 1,797 146 147 146 0 0 September 15 355 356 355 1,796 1,797 1,797 146 146 146 0 0 September 16 354 356 355 1,797 1,797 1,797 146 146 146 0 0 September 17 354 355 355 1,797 1,797 1,797 146 146 146 0 0 September 18 354 355 354 1,797 1,797 1,797 146 146 146 0 0 September 19 354 354 354 1,797 1,797 1,797 146 146 146 0 0 September 20 354 354 354 1,797 1,797 1,797 146 146 146 0 0 September 21 353 354 354 1,797 1,797 1,797 146 146 146 0 0 September 22 353 355 354 1,797 1,797 1,797 146 146 146 0 0 September 23 353 354 354 1,797 1,797 1,797 146 146 146 0 0 September 24 353 354 353 1,797 1,797 1,797 146 146 146 0 0 September 25 353 354 353 1,797 1,797 1,797 146 147 146 0 0 September 26 352 353 353 1,797 1,797 1,797 146 147 146 0 0 September 27 352 353 352 1,796 1,797 1,797 146 1 146 146 0 0 September 28 352 353 352 1,796 1,797 1,797 146 146 146 0 0 September 29 352 353 352 1,796 1,797 1,797 146 147 146 0 0 September 30 352 352 352 1,796 1,797 1,796 146 146 146 0 0 October 1 351 352 352 1,796 1,797 1,796 146 146 146 0 0 October 2 351 353 352 1,796 1,797 1,797 146 147 146 0 0 October 3 351 352 352 1,796 1,797 1,796 146 147 146 0 0 October 4 351 352 352 1,796 1,797 1,796 146 147 146 0 0 Eni Petroleum, Alaska - Reservoir Page 117 October 5 351 352 352 1,797 1 1,797 1,797 1 147 147 1 147 0 0 October 6 349 352 351 1,797 1,797 1,797 147 147 147 0 0 October 7 349 350 350 1,796 1,797 1,797 147 147 147 0 0 October 8 349 350 349 1,796 1,797 1,797 147 147 147 0 0 October 9 348 350 349 1,797 1,797 1,797 147 147 147 0 0 October 10 348 349 349 1,797 1,797 1,797 147 147 147 0 0 October 11 348 349 349 1,797 1,797 1,797 147 147 147 0 0 October 12 348 349 349 1,797 1,797 1,797 147 147 147 0 0 October 13 349 349 349 1,797 1,797 1,797 147 147 147 0 0 October 14 349 349 349 1,797 1,797 1,797 147 147 147 0 0 October 15 349 349 349 1,797 1,797 1,797 147 147 147 0 0 October 16 348 349 349 1,797 1,797 1,797 147 147 147 0 0 October 17 348 348 348 1,797 1,797 1,797 147 147 147 0 0 October 18 348 348 348 1,797 1,797 1,797 147 147 147 0 0 October 19 348 348 348 1,797 1,797 1,797 147 147 147 0 0 October 20 348 348 348 1,796 1,797 1,797 147 147 147 0 0 October 21 347 348 348 1,796 1,797 1,797 147 147 147 0 0 October 22 347 348 348 1,796 1,797 1,796 147 147 147 0 0 October 23 347 348 348 1,796 1,797 1,796 147 147 147 0 0 October 24 347 348 347 1,796 1,797 1,796 147 147 147 0 0 October 25 347 348 347 1,796 1,797 1,797 147 147 147 0 0 October 26 346 348 347 1,796 1,797 1,796 147 147 147 0 0 October 27 346 347 347 1,796 1,797 1,796 147 147 147 0 0 October 28 346 347 347 1,796 1,797 1,796 147 147 147 0 0 October 29 346 347 347 1,796 1,796 1,796 147 147 147 0 0 October 30 346 347 346 1,796 1,796 1,796 147 147 147 0 0 October 31 346 346 346 1,796 1,796 1,796 147 147 147 0 0 November 1 346 346 346 1,796 11796 1,796 147 147 147 0 0 November 2 345 346 346 1,796 1,796 1,796 146 147 147 0 0 November 3 345 346 346 1,796 1,796 1,796 147 147 147 0 0 November 4 345 346 346 1,796 1,796 1,796 147 147 147 0 0 November 5 345 346 345 1,796 1,796 1,796 146 147 146 0 0 November 6 345 346 345 1,795 1,796 1,795 146 146 146 0 0 November 7 344 345 345 1,795 1,796 1,796 146 146 146 0 0 November 8 343 344 344 1,795 1,796 1,796 146 146 146 0 0 November 9 343 344 344 1,795 1,796 1,795 146 146 146 0 0 November 10 343 344 344 1,795 1,795 1,795 146 146 146 0 0 November 11 343 344 343 1,795 1,795 1,795 145 146 146 0 0 November 12 343 344 344 1,795 1,795 1,795 145 146 146 0 0 November 13 343 344 343 1,795 1,795 1,795 145 146 146 0 0 November 14 343 343 343 1,795 1,795 1,795 146 146 146 0 0 Eni Petroleum, Alaska - Reservoir Page 118 November 15 342 343 343 1,795 1 1,795 1,795 1 145 146 1 145 0 0 November 16 342 343 342 1,795 1,795 1,795 145 145 145 0 0 November 17 341 343 342 1,794 1,795 1,795 145 145 145 0 0 November 18 342 342 342 1,794 1,795 1,794 145 145 145 0 0 November 19 342 342 342 1,794 1,795 1,794 145 145 145 0 0 November 20 341 342 342 1,794 1,795 1,795 145 145 145 0 0 November 21 341 342 342 1,794 1,795 1,794 145 145 145 0 0 November 22 341 342 341 1,794 1,794 1,794 145 145 145 0 0 November 23 341 342 341 1,794 1,794 1,794 144 145 145 0 0 November 24 340 341 341 1,794 1,794 1,794 144 145 145 0 0 November 25 340 341 340 1,794 1,794 1,794 145 145 145 0 0 November 26 340 340 340 1,794 1,794 1,794 145 145 145 0 0 November 27 339 340 340 1,794 1,794 1,794 144 145 145 0 0 November 28 339 340 340 1,793 1,794 1,794 144 145 144 0 0 November 29 339 340 339 1,793 1,794 1,794 144 144 144 0 0 November 30 339 339 339 1,794 1,794 1,794 144 145 145 0 0 December 1 339 339 339 1,794 1,794 1,794 145 145 145 0 0 December 2 339 340 339 1,793 1,794 1,794 144 145 144 0 0 December 3 339 340 340 1,794 1,794 1,794 144 144 144 0 0 December 4 339 340 339 1,794 1,794 1,794 144 145 144 0 0 December 5 339 340 339 1,794 1,794 1,794 144 145 145 0 0 December 6 339 340 339 1,794 1,794 1,794 145 145 145 0 0 December 7 339 339 339 1,794 1,795 1,794 145 145 145 0 0 December 8 339 339 339 1,794 1,794 1,794 145 145 145 0 0 December 9 338 339 339 1,794 1,794 1,794 144 145 145 0 0 December 10 338 339 338 1,794 1,794 1,794 145 145 145 0 0 December 11 338 338 338 1,794 1,794 1,794 144 145 145 0 0 December 12 337 338 338 1,794 1,794 1,794 144 145 144 0 0 December 13 337 338 338 1,793 1,794 1,793 144 144 144 0 0 December 14 337 338 338 1,793 1,794 1,793 144 144 144 0 0 December 15 337 338 337 1,793 1,794 1,793 144 144 144 0 0 December 16 337 338 337 1,793 1,794 1,793 144 144 144 0 0 December 17 337 338 337 1,793 1,794 1,793 144 144 144 0 0 December 18 337 337 337 1,793 1,794 1,794 144 144 144 0 0 December 19 336 337 337 1,794 1,794 1,794 144 144 144 0 0 December 20 336 337 337 1,794 1,794 1,794 144 145 145 0 0 December 21 336 337 337 1,793 1,794 1,793 144 145 144 0 0 December 22 336 337 336 1,793 1,793 1,793 144 144 144 0 0 December 23 336 337 336 1,793 1,793 1,793 144 144 144 0 0 December 24 336 336 336 1,793 1,793 1,793 144 144 144 0 0 December 25 335 336 336 1,793 1,793 1,793 144 144 144 0 0 Eni Petroleum, Alaska - Reservoir Page 119 December 26 335 336 1 335 1,793 1,793 1,793 1 144 144 1 144 0 0 December 27 335 336 335 1,793 1,793 1,793 144 144 144 0 0 December 28 335 336 335 1,793 1,793 1,793 144 144 144 0 0 December 29 335 336 335 1,792 1,793 1,793 143 144 144 0 0 December 30 335 336 335 1,792 1,793 1,792 143 143 143 0 0 December 31 335 1 335 1 335 1,792 1,793 1 1,792 143 143 143 0 1 0 1,232 Notes for Highlighted Dates Above: 1/23 - Four-year MITIA testing; passed. Well remains shut-in due to tubing to IA communication. 1/27/21 Pump 36 bbls down tubing for freeze protect. 3/5/2021 Surface valve testing, pumped 5 bbls down tubing for freeze protect 9/3/21 SSSV testing, pumped 4 bbls for freeze protect Eni Petroleum, Alaska — Reservoir Page 120