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2022 Kenai Gas Field
Hilcorp Alaska, LLC March 3, 2023 Mrs. Jessie Chmielowski, Commissioner Alaska Oil and Gas Conservation Commission 333 W. 7th Avenue, Suite 100 Anchorage, AK 99501 Re: Kenai Gas Field SIO #7 2022 Sterling Pool 6 Annual Performance Evaluation Dear Commissioner Chmielowski: Attached for your review is the 2022 Annual Performance Evaluation for the Sterling Pool 6 Gas Storage Reservoir according to SIO #7. This report covers the primary production and injection period through the 2022 gas storage operations. Injection wells continue to act as expected based on an injectivity index. Real time downhole pressure monitoring is possible with shut in tubing pressures of KU 34-31 corrected to reservoir pressure. Exhibit #4 graphically shows the P/Z data during the 2022 calendar year. In that exhibit, it appears the Pool 6 pressure [as measured from KU 34-31] increased at a higher rate than in previous injection periods. This may be due to a hysteresis effect caused by the lower injection rates or lower mean yearly pressure in 2020 thru 2022. For the annual period ending 12/31/2022 the total volume injected into Sterling Pool 6 was 6.20 BSCF and total production was 4.17 BSCF. The native gas was determined to be fully depleted as of November 2017. All Pool 6 gas production throughout 2022 was considered 100% storage gas. The maximum reservoir pressure recorded in Pool 6 based on the KU 34-31 monitoring well SITP (shut in tubing pressure) was 206.4 psig or a reservoir pressure of 246 psia. This pressure is expected to be distributed consistently throughout the productive area of Pool 6 and is below the maximum reservoir pressure of 400 psi as established by rule #6 of SIO 7A. Regards, Daniel Taylor, P.E. 143467 Reservoir Engineer Post Office Box 244027 Anchorage, AK 99524-4027 3800 Centerpoint Drive Suite 100 Anchorage, AK 99503 Exhibit #1 – List of wells and service Exhibit #2 – KU 34-31 Monitoring Well SITP during 2022 Exhibit #3 – Production and Injection Volumes for 2022 Exhibit #4 – P/Z plot for 2022 Exhibit 1 – List of Wells and Service Pool 6 Well List 1.KU 13-06 2.KU 14X-06 3.KBU 23X-06 (prod and inj) 4.KU 31-07X (prod and inj) 5.KDU 5 6.KU 14-32 7.KU 22-06X 8.KU 34-31 (monitoring well) 9.KU 33-07 10.KU 43-06RD 11.KU 34-32 12.KU 21-06RD (inj only) 13.KU 44-01B Year Month Reservoir Gas InjGas InjLessGas WELL_NAME DATE_TIME TbgPress TP_Date GIP (MMCF) Pz Gp (BCF) 2013 5 Pool_6 24.3 194.8 170.5 KU 34-31 5/31/2013 115 5/31/2013 16139.5 135.7 533.0 2013 6 Pool_6 0.0 201.9 201.9 KU 34-31 6/30/2013 116 6/30/2013 16341.4 136.8 532.8 2013 7 Pool_6 0.0 293.0 293.0 KU 34-31 7/31/2013 120 7/31/2013 16634.5 141.6 532.5 2013 8 Pool_6 0.0 956.1 956.1 KU 34-31 8/31/2013 126 8/31/2013 17590.6 148.8 531.5 2013 9 Pool_6 0.0 1593.1 1593.1 KU 34-31 9/30/2013 126 9/30/2013 19183.7 148.8 529.9 2013 10 Pool_6 0.0 1049.0 1049.0 KU 34-31 10/31/2013 150 10/31/2013 20232.7 177.8 528.9 2013 11 Pool_6 107.1 313.3 206.3 KU 34-31 11/30/2013 154 11/30/2013 20439.0 182.7 528.7 2013 12 Pool_6 131.9 242.0 110.1 KU 34-31 12/31/2013 154 12/31/2013 20549.1 182.7 528.6 2014 1 Pool_6 18.0 316.3 298.4 KU 34-31 1/31/2014 157 1/31/2014 20847.4 186.4 528.3 2014 2 Pool_6 306.1 35.1 -271.0 KU 34-31 2/28/2014 157 2/28/2014 20576.4 186.4 528.6 2014 3 Pool_6 74.2 356.1 281.9 KU 34-31 3/31/2014 157 3/31/2014 20858.3 186.4 528.3 2014 4 Pool_6 8.4 860.3 851.8 KU 34-31 4/30/2014 156 4/30/2014 21710.2 185.2 527.4 2014 5 Pool_6 165.0 689.2 524.1 KU 34-31 5/31/2014 156 5/31/2014 22234.3 185.2 526.9 2014 6 Pool_6 0.0 1395.1 1395.1 KU 34-31 6/30/2014 168 6/30/2014 23629.4 199.8 525.5 2014 7 Pool_6 625.7 76.5 -549.2 KU 34-31 7/31/2014 172 7/31/2014 23080.2 204.7 526.0 2014 8 Pool_6 96.6 156.0 59.4 KU 34-31 8/31/2014 171 8/31/2014 23139.6 203.5 526.0 2014 9 Pool_6 45.9 117.9 72.0 KU 34-31 9/30/2014 173 9/30/2014 23211.6 206.0 525.9 2014 10 Pool_6 274.0 455.8 181.8 KU 34-31 10/31/2014 171 10/31/2014 23393.3 203.5 525.7 2014 11 Pool_6 0.0 761.3 761.3 KU 34-31 11/30/2014 175 11/30/2014 24154.6 208.4 525.0 2014 12 Pool_6 0.0 1052.8 1052.8 KU 34-31 12/31/2014 180 12/31/2014 25207.4 214.6 523.9 2015 1 Pool_6 12.0 902.9 890.9 KU 34-31 1/31/2015 190 1/31/2015 26098.3 227.0 523.0 2015 2 Pool_6 17.1 929.0 911.9 KU 34-31 2/28/2015 190 2/28/2015 27010.2 227.0 522.1 2015 3 Pool_6 6.0 510.5 504.5 KU 34-31 3/31/2015 202 3/31/2015 27514.7 241.9 521.6 2015 4 Pool_6 707.3 476.8 -230.4 KU 34-31 4/30/2015 202 4/30/2015 27284.2 241.9 521.8 2015 5 Pool_6 812.2 60.9 -751.3 KU 34-31 5/31/2015 192 5/31/2015 26532.9 229.4 522.6 2015 6 Pool_6 826.0 35.9 -790.1 KU 34-31 6/30/2015 187 6/30/2015 25742.8 223.2 523.4 2015 7 Pool_6 1005.9 15.2 -990.7 KU 34-31 7/31/2015 181 7/31/2015 24752.1 215.8 524.4 2015 8 Pool_6 1118.5 16.3 -1102.2 KU 34-31 8/31/2015 181 8/31/2015 23649.9 215.8 525.5 2015 9 Pool_6 1197.9 0.0 -1197.9 KU 34-31 9/30/2015 160 9/30/2015 22452.1 190.0 526.7 2015 10 Pool_6 693.3 218.5 -474.9 KU 34-31 10/31/2015 154 10/31/2015 21977.2 182.7 527.1 2015 11 Pool_6 918.3 14.8 -903.6 KU 34-31 11/30/2015 156 11/30/2015 21073.6 185.2 528.1 2015 12 Pool_6 1069.8 0.5 -1069.3 KU 34-31 12/31/2015 145 12/31/2015 20004.4 171.8 529.1 2016 1 Pool_6 126.6 165.3 38.8 KU 34-31 1/31/2016 145 1/31/2016 20043.1 171.8 529.1 2016 2 Pool_6 9.2 507.4 498.2 KU 34-31 2/28/2016 145 2/29/2016 20541.3 171.8 528.6 2016 3 Pool_6 6.4 595.1 588.7 KU 34-31 3/31/2016 161 3/31/2016 21130.0 191.3 528.0 2016 4 Pool_6 0.0 703.4 703.4 KU 34-31 4/30/2016 166 4/30/2016 21833.4 197.4 527.3 2016 5 Pool_6 0.0 989.9 989.9 KU 34-31 5/31/2016 176 5/31/2016 22823.3 209.7 526.3 2016 6 Pool_6 9.2 684.3 675.2 KU 34-31 6/30/2016 185 6/30/2016 23498.5 220.8 525.6 2016 8 Pool_6 0.0 1435.7 1435.7 KU 34-31 8/31/2016 201 8/31/2016 26197.1 240.6 522.9 2016 9 Pool_6 0.0 1273.0 1273.0 KU 34-31 9/30/2016 211 9/30/2016 27470.1 253.1 521.7 2016 10 Pool_6 124.7 506.3 381.6 KU 34-31 10/31/2016 214 10/31/2016 27851.7 256.9 521.3 2016 11 Pool_6 1006.2 0.2 -1006.0 KU 34-31 11/30/2016 206 11/30/2016 26845.7 246.9 522.3 2016 12 Pool_6 1748.5 0.0 -1748.5 KU 34-31 12/31/2016 191 12/31/2016 25097.2 228.2 524.0 2017 1 Pool_6 1187.1 0.0 -1187.1 KU 34-31 1/31/2017 175 1/31/2017 23910.1 208.4 525.2 2017 2 Pool_6 933.2 0.1 -933.2 KU 34-31 2/28/2017 170 2/28/2017 22976.9 202.3 526.1 2017 3 Pool_6 57.2 20.3 -36.9 KU 34-31 3/31/2017 169 3/31/2017 22940.0 201.1 526.2 2017 4 Pool_6 6.7 1254.0 1247.3 KU 34-31 4/30/2017 177 4/30/2017 24187.3 210.9 524.9 2017 5 Pool_6 0.0 1814.7 1814.7 KU 34-31 5/31/2017 195 5/31/2017 26002.0 233.2 523.1 2017 6 Pool_6 0.0 1196.8 1196.8 KU 34-31 6/30/2017 211 6/30/2017 27198.8 253.1 521.9 2017 7 Pool_6 0.4 1553.0 1552.6 KU 34-31 7/31/2017 221 7/31/2017 28751.3 265.7 520.4 2017 8 Pool_6 0.0 1264.2 1264.2 KU 34-31 8/31/2017 231.39 8/31/2017 30015.6 278.8 519.1 2017 9 Pool_6 0.0 1422.2 1422.2 KU 34-31 9/30/2017 239.61 9/30/2017 31437.8 289.2 517.7 2017 10 Pool_6 17.8 638.9 621.1 KU 34-31 10/31/2017 244.29 10/31/2017 32058.8 295.2 517.1 2017 11 Pool_6 1353.2 0.0 -1353.2 KU 34-31 11/30/2017 230 11/30/2017 30705.6 277.0 518.4 2017 12 Pool_6 1329.2 0.0 -1329.2 KU 34-31 12/31/2017 216.04 12/31/2017 29376.4 259.5 519.8 2018 1 Pool_6 1351.6 0.0 -1351.6 KU 34-31 1/31/2018 204.11 1/31/2018 28024.8 244.5 521.1 2018 2 Pool_6 1004.7 0.0 -1004.7 KU 34-31 2/28/2018 196.45 2/28/2018 27020.1 235.0 522.1 2018 3 Pool_6 991.8 0.0 -991.8 KU 34-31 3/31/2018 188.13 3/31/2018 26028.3 224.6 523.1 2018 4 Pool_6 0.6 205.9 205.3 KU 34-31 4/30/2018 192.57 4/30/2018 26233.6 230.2 522.9 2018 5 Pool_6 6.7 1081.1 1074.4 KU 34-31 5/31/2018 202.79 5/31/2018 27308.0 242.9 521.8 2018 6 Pool_6 0.0 965.4 965.4 KU 34-31 6/30/2018 216.76 6/30/2018 28273.4 260.4 520.9 2018 7 Pool_6 0.0 837.9 837.9 KU 34-31 7/31/2018 224.1 7/31/2018 29111.4 269.6 520.0 2018 8 Pool_6 0.0 795.0 795.0 KU 34-31 8/31/2018 229.86 8/31/2018 29906.4 276.9 519.2 2018 9 Pool_6 0.0 927.7 927.7 KU 34-31 9/30/2018 235.98 9/30/2018 30834.1 284.6 518.3 2018 10 Pool_6 101.5 389.4 287.8 KU 34-31 10/31/2018 237.14 10/31/2018 31121.9 286.1 518.0 2018 11 Pool_6 721.5 0.2 -721.3 KU 34-31 11/30/2018 229.26 11/30/2018 30400.6 276.1 518.7 2018 12 Pool_6 1448.6 0.0 -1448.6 KU 34-31 12/31/2018 215.21 12/31/2018 28952.1 258.4 520.2 2019 1 Pool_6 1496.5 0.0 -1496.5 KU 34-31 1/31/2019 202.75 1/31/2019 27455.6 242.8 521.7 2019 2 Pool_6 1311.4 0.0 -1311.4 KU 34-31 2/28/2019 191.79 2/28/2019 26144.1 229.2 523.0 2019 3 Pool_6 1101.8 0.0 -1101.8 KU 34-31 3/31/2019 180.48 3/31/2019 25042.3 215.2 524.1 2019 4 Pool_6 5.9 593.7 587.7 KU 34-31 4/30/2019 189.04 4/30/2019 25630.1 225.8 523.5 2019 5 Pool_6 0.0 1309.3 1309.3 KU 34-31 5/31/2019 205.06 5/31/2019 26939.4 245.7 522.2 2019 6 Pool_6 0.0 1061.2 1061.2 KU 34-31 6/30/2019 216.69 6/30/2019 28000.6 260.3 521.1 2019 7 Pool_6 0.0 799.6 799.6 KU 34-31 7/31/2019 222.86 7/31/2019 28800.2 268.0 520.3 2019 8 Pool_6 0.0 832.1 832.1 KU 34-31 8/31/2019 228.56 8/31/2019 29632.2 275.2 519.5 2019 9 Pool_6 0.0 652.1 652.1 KU 34-31 9/30/2019 233.3 9/30/2019 30284.3 281.2 518.8 2019 10 Pool_6 317.8 26.0 -291.8 KU 34-31 10/31/2019 231.47 10/31/2019 29992.5 278.9 519.1 2019 11 Pool_6 1495.9 0.0 -1495.9 KU 34-31 11/30/2019 214.27 11/30/2019 28496.6 257.2 520.6 2019 12 Pool_6 1987.1 0.0 -1987.1 KU 34-31 12/31/2019 196.41 12/31/2019 26509.5 234.9 522.6 2020 1 Pool_6 1882.3 0.0 -1882.3 KU 34-31 1/31/2020 179.97 1/31/2020 24627.2 214.6 524.5 2020 2 Pool_6 1263.6 0.0 -1263.6 KU 34-31 2/28/2020 169.25 2/29/2020 23363.6 201.4 525.8 2020 3 Pool_6 1451.8 0.0 -1451.8 KU 34-31 3/31/2020 159.25 3/31/2020 21911.8 189.1 527.2 2020 4 Pool_6 297.7 47.1 -250.7 KU 34-31 4/30/2020 157.78 4/30/2020 21661.1 187.3 527.5 2020 5 Pool_6 0.0 432.0 432.0 KU 34-31 5/31/2020 168.1 5/31/2020 22093.1 200.0 527.0 2020 6 Pool_6 16.8 78.3 61.4 KU 34-31 6/30/2020 172.59 6/30/2020 22154.5 205.5 527.0 2020 7 Pool_6 0.0 141.2 141.2 KU 34-31 7/31/2020 175.88 7/31/2020 22295.7 209.5 526.8 2020 8 Pool_6 4.9 392.3 387.5 KU 34-31 8/31/2020 178.98 8/31/2020 22683.2 213.3 526.4 2020 9 Pool_6 0.7 702.1 701.4 KU 34-31 9/30/2020 186.14 9/30/2020 23384.6 222.2 525.7 2020 10 Pool_6 93.8 111.2 17.4 KU 34-31 10/31/2020 187.28 10/31/2020 23402.0 223.6 525.7 2020 11 Pool_6 1005.8 0.0 -1005.8 KU 34-31 11/30/2020 176.46 11/30/2020 22396.2 210.2 526.7 2020 12 Pool_6 1299.7 0.0 -1299.7 KU 34-31 12/31/2020 162.7 12/31/2020 21096.5 193.3 528.0 2021 1 Pool_6 930.1 0.5 -929.5 KU 34-31 1/31/2021 153.45 1/31/2021 20167.0 182.0 529.0 2021 2 Pool_6 1021.5 0.0 -1021.5 KU 34-31 2/28/2021 145.16 2/28/2021 19145.4 172.0 530.0 2021 3 Pool_6 529.5 17.5 -511.9 KU 34-31 3/31/2021 140.6 3/31/2021 18633.5 166.4 530.5 2021 4 Pool_6 10.6 329.2 318.6 KU 34-31 4/30/2021 147.7 4/30/2021 18952.0 175.0 530.2 2021 5 Pool_6 0.0 550.1 550.1 KU 34-31 5/31/2021 157.25 5/31/2021 19502.1 186.7 529.6 2021 6 Pool_6 2.0 609.6 607.6 KU 34-31 6/30/2021 165.44 6/30/2021 20109.7 196.7 529.0 2021 7 Pool_6 0.0 501.9 501.9 KU 34-31 7/31/2021 172.04 7/31/2021 20611.6 204.8 528.5 2021 8 Pool_6 0.0 660.4 660.4 KU 34-31 8/31/2021 178.51 8/31/2021 21272.1 212.8 527.9 2021 9 Pool_6 0.0 909.2 909.2 KU 34-31 9/30/2021 188.11 9/30/2021 22181.2 224.6 526.9 2021 10 Pool_6 9.7 523.6 514.0 KU 34-31 10/31/2021 192.17 10/31/2021 22695.2 229.7 526.4 2021 11 Pool_6 927.0 0.0 -927.0 KU 34-31 11/30/2021 181.61 11/30/2021 21768.2 216.6 527.4 2021 12 Pool_6 1797.0 0.0 -1796.9 KU 34-31 12/31/2021 162.33 12/31/2021 19971.2 192.9 529.2 2022 1 Pool_6 1290.4 0.0 -1290.4 KU 34-31 1/31/2022 149 1/31/2022 18680.8 176.6 530.4 2022 2 Pool_6 919.0 2.7 -916.3 KU 34-31 2/28/2022 140.87 2/28/2022 17764.5 166.8 531.4 2022 3 Pool_6 561.2 0.0 -561.2 KU 34-31 3/31/2022 137.61 3/31/2022 17203.4 162.8 531.9 2022 4 Pool_6 23.6 342.4 318.8 KU 34-31 4/30/2022 140.62 4/30/2022 17522.2 166.5 531.6 2022 5 Pool_6 0.0 260.4 260.4 KU 34-31 5/31/2022 149.38 5/31/2022 17782.6 177.1 531.3 2022 6 Pool_6 0.0 718.9 718.9 KU 34-31 6/30/2022 155.87 6/30/2022 18501.4 185.0 530.6 2022 7 Pool_6 7.9 906.7 898.8 KU 34-31 7/31/2022 169.74 7/31/2022 19400.2 202.0 529.7 2022 8 Pool_6 0.0 1387.5 1387.5 KU 34-31 8/31/2022 181.8 8/31/2022 20787.7 216.8 528.3 2022 9 Pool_6 0.0 2026.3 2026.3 KU 34-31 9/30/2022 198.85 9/30/2022 22814.0 238.0 526.3 2022 10 Pool_6 23.6 608.0 584.4 KU 34-31 10/31/2022 205.53 10/31/2022 23398.4 246.3 525.7 2022 11 Pool_6 393.1 0.1 -393.0 KU 34-31 11/30/2022 198.28 11/30/2022 23005.3 237.3 526.1 2022 12 Pool_6 1006.6 0.0 -1006.6 KU 34-31 12/31/2022 182.84 12/31/2022 21998.7 218.1 527.1 2023 1 Pool_6 1183.3 0.0 -1183.3 KU 34-31 1/31/2023 167.74 1/31/2023 20815.5 199.5 528.3 2023 2 Pool_6 579.5 0.0 -579.5 KU 34-31 2/28/2023 161.47 2/28/2023 20235.9 191.8 528.9 2023-02-24, 528.83 2023-01-31, 528.311 2022-12-31, 527.128 2022-11-30, 526.121 2022-10-31, 525.728 2022-09-30, 526.313 2022-08-31, 528.339 2022-07-31, 529.727 2022-06-30, 530.625 2022-05-31, 531.344 2022-04-30, 531.605 2022-03-31, 531.923 2022-02-28, 531.3622022-01-31, 530.446 0 50 100 150 200 250 300 350 400 515.00 520.00 525.00 530.00 535.00 P/ z ( p s i ) Gp (BCF) Pool_6 Current Data Mean
