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2022 Swanson Tyonek
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: 2022 Annual Material Balance Calculations of Production and Injection Volumes – Swanson River Gas Storage Facility #3 (Tyonek 77-3 sand) Swanson River Field Dear Commissioner Chmielowski: Attached for your review is the annual material balance calculation of production and injection volumes for the Swanson River Gas Storage Facility #3 (SRGSF #3), as required per AOGCC Storage Injection Order #6 (SIO #6). This material balance report covers the primary production period (Jul. 2004 – Nov. 2005), as well as the gas storage operations that have taken place since Dec. 2005. The 77-3 reservoir in the Swanson River field was in active use for all of 2022 and was an important component of total gas deliverability for the Cook Inlet. Three active wells were used for injection and production in 2022 – SCU 42-05X, SCU 42-05Y, and SCU 42-05Z. Hilcorp has performed material balance calculations on the 77-3 reservoir to provide assurance of continued reservoir confinement of the gas storage volumes. Supporting data is attached in numerical and graphical form (P/Z plot) for the convenience of the reader. BHP calculations were made for the 2022 storage cycle between January and December. These data points are plotted with the historical data and they conform to the overall curve, indicating continued confinement of the storage gas. Sincerely, Daniel Taylor Reservoir Engineer, P.E. 143467 Attachments: 1) Tyonek 77-3 Annual Production/Injection Plot 2) Tyonek 77-3 P/Z Data 3) Tyonek 77-3 P/Z vs Cumulative Production Plot Post Office Box 244027 Anchorage, AK 99524-4027 3800 Centerpoint Drive Suite 100 Anchorage, AK 99503 Phone: 907/777-8322 Fax: 907/777-8310 Year Month Reservoir Gas InjGas InjLessGas WELL_NAME DATE_TIME TbgPress TP_Date GIP (MMCF) Pz Gp (BCF) 2012 2 Tyonek 77-3 222.3 198.5 -23.8 SCU 42-05Y 2/28/2012 2708 2/5/2012 1641.1 4060.9 1.1 2012 3 Tyonek 77-3 352.5 4.2 -348.3 SCU 42-05Y 3/31/2012 2129 3/30/2012 1292.8 3337.3 1.5 2012 4 Tyonek 77-3 121.9 36.5 -85.4 SCU 42-05Y 4/30/2012 2203 4/30/2012 1207.4 3437.8 1.6 2012 5 Tyonek 77-3 161.6 6.9 -154.7 SCU 42-05Y 5/31/2012 2009 5/29/2012 1052.6 3169.5 1.7 2012 6 Tyonek 77-3 80.1 30.5 -49.6 SCU 42-05X 6/30/2012 2011 6/27/2012 1003.0 2752.4 1.8 2012 7 Tyonek 77-3 127.4 100.6 -26.8 SCU 42-05X 7/31/2012 2200 7/30/2012 976.2 2995.5 1.8 2012 8 Tyonek 77-3 14.6 121.7 107.1 SCU 42-05Y 8/31/2012 2381 8/27/2012 1083.3 3669.9 1.7 2012 9 Tyonek 77-3 29.3 179.9 150.6 SCU 42-05X 9/30/2012 2543 9/23/2012 1234.0 3411.3 1.5 2012 10 Tyonek 77-3 55.6 216.2 160.6 SCU 42-05Y 10/31/2012 2991 10/29/2012 1394.6 4362.3 1.4 2012 11 Tyonek 77-3 261.7 125.2 -136.5 SCU 42-05X 11/30/2012 2185 11/30/2012 1258.1 2976.6 1.5 2012 12 Tyonek 77-3 189.7 152.6 -37.0 SCU 42-05X 12/31/2012 2206 12/18/2012 1221.0 3003.0 1.6 2013 1 Tyonek 77-3 163.0 245.0 82.0 SCU 42-05X 1/31/2013 2525 1/5/2013 1303.1 3390.3 1.5 2013 2 Tyonek 77-3 150.5 60.6 -89.9 SCU 42-05Y 2/28/2013 2146 2/26/2013 1213.2 3360.6 1.6 2013 3 Tyonek 77-3 31.9 208.7 176.8 SCU 42-05X 3/31/2013 2660 3/28/2013 1390.0 3545.7 1.4 2013 4 Tyonek 77-3 0.1 289.0 288.9 SCU 42-05X 4/30/2013 3078 4/13/2013 1678.9 3994.9 1.1 2013 8 Tyonek 77-3 0.0 21.7 21.7 SCU 42-05X 8/31/2013 3904 8/4/2013 2203.8 4740.2 0.6 2014 2 Tyonek 77-3 97.9 127.5 29.6 SCU 42-05Y 2/28/2014 3076 2/9/2014 2033.5 4446.2 0.7 2014 5 Tyonek 77-3 145.3 123.3 -22.0 SCU 42-05X 5/31/2014 3410 5/3/2014 2225.2 4317.2 0.6 2014 6 Tyonek 77-3 22.2 162.8 140.6 SCU 42-05X 6/30/2014 3460 6/30/2014 2365.8 4363.1 0.4 2014 7 Tyonek 77-3 116.0 77.8 -38.2 SCU 42-05X 7/31/2014 3463 7/6/2014 2327.6 4365.8 0.4 2014 8 Tyonek 77-3 182.4 106.0 -76.4 SCU 42-05X 8/31/2014 3068 8/30/2014 2251.2 3984.7 0.5 2015 1 Tyonek 77-3 102.4 137.0 34.6 SCU 42-05X 1/31/2015 2635 1/23/2015 2047.2 3517.3 0.7 2015 5 Tyonek 77-3 61.4 91.0 29.6 SCU 42-05X 5/31/2015 2446.204 5/25/2015 1917.1 3297.3 0.9 2015 6 Tyonek 77-3 67.9 58.8 -9.0 SCU 42-05Y 6/30/2015 2615.164 6/22/2015 1908.1 3954.5 0.9 2015 7 Tyonek 77-3 111.2 48.7 -62.5 SCU 42-05Y 7/31/2015 2428.114 7/29/2015 1845.5 3729.0 0.9 2015 8 Tyonek 77-3 48.4 24.2 -24.2 SCU 42-05Y 8/31/2015 2397 8/31/2015 1821.3 3690.1 1.0 2015 9 Tyonek 77-3 70.7 44.5 -26.3 SCU 42-05X 9/30/2015 2370.747 9/29/2015 1795.1 3206.6 1.0 2015 10 Tyonek 77-3 204.4 5.7 -198.6 SCU 42-05Y 10/31/2015 2052.141 10/22/2015 1596.4 3230.5 1.2 2015 11 Tyonek 77-3 104.1 177.7 73.6 SCU 42-05X 11/30/2015 1945.417 11/19/2015 1670.0 2665.8 1.1 2015 12 Tyonek 77-3 76.5 185.8 109.4 SCU 42-05X 12/31/2015 2238.91 12/13/2015 1779.4 3044.3 1.0 2016 2 Tyonek 77-3 50.9 32.1 -18.7 SCU 42-05X 2/28/2016 2366.606 2/29/2016 1740.2 3201.5 1.0 2016 3 Tyonek 77-3 81.8 17.5 -64.3 SCU 42-05Y 3/31/2016 2199 3/31/2016 1675.9 3432.4 1.1 2016 4 Tyonek 77-3 68.1 21.2 -46.9 SCU 42-05Y 4/30/2016 2139 4/21/2016 1629.0 3351.1 1.1 2016 5 Tyonek 77-3 17.7 206.8 189.0 SCU 42-05X 5/31/2016 2700 5/31/2016 1818.0 3590.8 1.0 2016 6 Tyonek 77-3 0.0 261.6 261.6 SCU 42-05X 6/30/2016 2940 6/18/2016 2079.6 3852.0 0.7 2016 7 Tyonek 77-3 0.0 399.9 399.9 SCU 42-05X 7/31/2016 3720 7/14/2016 2479.5 4590.5 0.3 2016 8 Tyonek 77-3 0.0 214.7 214.7 SCU 42-05X 8/31/2016 4240 8/31/2016 2694.2 4989.3 0.1 2016 9 Tyonek 77-3 0.0 94.7 94.7 SCU 42-05X 9/30/2016 4200 9/20/2016 2789.0 4961.3 0.0 2016 10 Tyonek 77-3 113.7 13.0 -100.7 SCU 42-05X 10/31/2016 3600 10/31/2016 2688.3 4487.9 0.1 2016 11 Tyonek 77-3 97.4 28.0 -69.3 SCU 42-05X 11/30/2016 3500 11/18/2016 2619.0 4399.3 0.2 2017 1 Tyonek 77-3 164.9 74.7 -90.2 SCU 42-05Y 1/31/2017 3130 1/31/2017 2473.0 4497.8 0.3 2017 2 Tyonek 77-3 103.4 98.4 -5.0 SCU 42-05Y 2/28/2017 3186 2/27/2017 2468.0 4550.1 0.3 2017 3 Tyonek 77-3 321.3 10.7 -310.6 SCU 42-05Y 3/31/2017 2475 3/28/2017 2157.4 3786.9 0.6 2017 4 Tyonek 77-3 50.8 123.6 72.8 SCU 42-05Y 4/30/2017 2798 4/30/2017 2230.2 4160.4 0.5 2017 5 Tyonek 77-3 287.5 1.4 -286.1 SCU 42-05X 5/31/2017 2245 5/31/2017 1944.1 3051.9 0.8 2017 6 Tyonek 77-3 13.1 0.0 -13.1 SCU 42-05X 6/30/2017 2352 6/30/2017 1931.0 3183.8 0.8 2017 7 Tyonek 77-3 5.4 0.0 -5.4 SCU 42-05Y 7/31/2017 2423 7/31/2017 1925.6 3722.6 0.9 2017 8 Tyonek 77-3 0.0 89.3 89.3 SCU 42-05Y 8/31/2017 2628 8/27/2017 2014.9 3969.4 0.8 2017 9 Tyonek 77-3 0.0 18.9 18.9 SCU 42-05Y 9/30/2017 2711 9/28/2017 2033.8 4064.2 0.7 2017 10 Tyonek 77-3 0.7 30.7 30.0 SCU 42-05Y 10/31/2017 2789 10/30/2017 2063.8 4150.6 0.7 2017 11 Tyonek 77-3 58.2 29.8 -28.4 SCU 42-05X 11/30/2017 2684 11/20/2017 2035.4 3572.8 0.7 2018 2 Tyonek 77-3 197.1 12.9 -184.2 SCU 42-05Y 2/28/2018 2215 2/11/2018 1693.5 3453.9 1.1 2018 3 Tyonek 77-3 150.5 96.8 -53.7 SCU 42-05Y 3/31/2018 1914 3/10/2018 1639.8 3032.2 1.1 2018 4 Tyonek 77-3 26.0 37.0 10.9 SCU 42-05Y 4/30/2018 2116 4/30/2018 1650.8 3319.5 1.1 2018 5 Tyonek 77-3 0.0 94.1 94.1 SCU 42-05Y 5/31/2018 2329 5/31/2018 1744.9 3603.5 1.0 2018 6 Tyonek 77-3 0.0 89.2 89.2 SCU 42-05Y 6/30/2018 2545 6/30/2018 1834.0 3871.7 0.9 2018 7 Tyonek 77-3 0.0 176.5 176.5 SCU 42-05Y 7/31/2018 2810 7/22/2018 2010.5 4173.5 0.8 2018 8 Tyonek 77-3 0.0 131.9 131.9 SCU 42-05Y 8/31/2018 3133 8/22/2018 2142.4 4500.7 0.6 2018 9 Tyonek 77-3 1.0 71.8 70.7 SCU 42-05Y 9/30/2018 3239 9/30/2018 2213.1 4598.3 0.6 2018 10 Tyonek 77-3 6.5 44.1 37.6 SCU 42-05Y 10/31/2018 3262 10/20/2018 2250.7 4618.9 0.5 2018 11 Tyonek 77-3 100.2 6.5 -93.7 SCU 42-05Y 11/30/2018 2966 11/29/2018 2157.0 4337.1 0.6 2018 12 Tyonek 77-3 55.1 39.3 -15.9 SCU 42-05X 12/31/2018 2876 12/31/2018 2141.2 3783.9 0.6 2019 1 Tyonek 77-3 37.7 3.8 -33.9 SCU 42-05X 1/31/2019 2851 1/27/2019 2107.3 3757.0 0.7 2019 2 Tyonek 77-3 13.4 3.5 -10.0 SCU 42-05X 2/28/2019 2811 2/28/2019 2097.3 3713.6 0.7 2019 3 Tyonek 77-3 96.0 0.0 -96.0 SCU 42-05X 3/31/2019 2845 3/17/2019 2001.3 3750.5 0.8 2019 4 Tyonek 77-3 47.2 14.2 -33.0 SCU 42-05Y 4/30/2019 2558 4/30/2019 1968.3 3887.2 0.8 2019 5 Tyonek 77-3 90.1 8.1 -82.0 SCU 42-05Y 5/31/2019 2461 5/31/2019 1886.3 3769.7 0.9 2019 6 Tyonek 77-3 80.2 7.6 -72.6 SCU 42-05Y 6/30/2019 2328 6/26/2019 1813.7 3602.2 1.0 2019 7 Tyonek 77-3 58.2 5.3 -52.9 SCU 42-05X 7/31/2019 2291 7/31/2019 1760.8 3109.0 1.0 2019 8 Tyonek 77-3 10.8 2.6 -8.1 SCU 42-05X 8/31/2019 2325 8/31/2019 1752.7 3150.8 1.0 2019 9 Tyonek 77-3 1.8 3.1 1.4 SCU 42-05X 9/30/2019 2370 9/30/2019 1754.1 3205.7 1.0 2019 10 Tyonek 77-3 0.7 181.3 180.6 SCU 42-05X 10/31/2019 2526 10/12/2019 1934.6 3391.5 0.8 2019 12 Tyonek 77-3 391.4 10.4 -381.0 SCU 42-05X 12/31/2019 3211 12/9/2019 1735.2 4127.7 1.0 2020 1 Tyonek 77-3 328.0 0.0 -328.0 SCU 42-05Y 1/31/2020 857.294 1/23/2020 1407.2 1244.8 1.4 2020 2 Tyonek 77-3 127.7 2.2 -125.5 SCU 42-05Y 2/28/2020 1611 2/27/2020 1281.6 2568.5 1.5 2020 3 Tyonek 77-3 73.3 0.0 -73.3 SCU 42-05Y 3/31/2020 1578 3/31/2020 1208.4 2515.6 1.6 2020 4 Tyonek 77-3 17.0 87.3 70.3 SCU 42-05Y 4/30/2020 1838 4/22/2020 1278.6 2919.6 1.5 2020 5 Tyonek 77-3 0.1 298.7 298.6 SCU 42-05X 5/31/2020 1998 5/12/2020 1577.2 2735.3 1.2 2020 8 Tyonek 77-3 5.9 258.3 252.4 SCU 42-05X 8/31/2020 3621 8/31/2020 2250.6 4506.1 0.5 2020 9 Tyonek 77-3 0.0 250.6 250.6 SCU 42-05X 9/30/2020 3806 9/30/2020 2501.2 4661.6 0.3 2020 10 Tyonek 77-3 2.1 149.2 147.1 SCU 42-05X 10/31/2020 3910 10/31/2020 2648.4 4744.9 0.1 2020 11 Tyonek 77-3 35.4 33.7 -1.6 SCU 42-05Y 11/30/2020 3529 11/30/2020 2646.7 4840.9 0.1 2020 12 Tyonek 77-3 275.8 2.0 -273.8 SCU 42-05Y 12/31/2020 2908 12/31/2020 2372.9 4277.4 0.4 2021 1 Tyonek 77-3 242.5 40.3 -202.2 SCU 42-05Y 1/31/2021 2480 1/30/2021 2170.7 3793.1 0.6 2021 2 Tyonek 77-3 283.2 18.8 -264.3 SCU 42-05Y 2/28/2021 2391 2/10/2021 1906.4 3682.5 0.9 2021 3 Tyonek 77-3 68.1 1.4 -66.7 SCU 42-05X 3/31/2021 2101 3/31/2021 1839.7 2869.4 0.9 2021 4 Tyonek 77-3 4.6 109.1 104.5 SCU 42-05X 4/30/2021 2440 4/30/2021 1944.2 3289.9 0.8 2021 5 Tyonek 77-3 0.0 55.8 55.8 SCU 42-05X 5/31/2021 2656 5/31/2021 2000.0 3541.2 0.8 2021 6 Tyonek 77-3 0.0 156.7 156.7 SCU 42-05X 6/30/2021 3036 6/30/2021 2156.7 3952.0 0.6 2021 7 Tyonek 77-3 0.0 82.9 82.9 SCU 42-05X 7/31/2021 3141 7/31/2021 2239.7 4058.4 0.5 2021 8 Tyonek 77-3 15.6 84.1 68.6 SCU 42-05X 8/31/2021 3192 8/11/2021 2308.2 4109.0 0.5 2021 9 Tyonek 77-3 27.9 6.3 -21.6 SCU 42-05Y 9/30/2021 3049 9/30/2021 2286.6 4419.9 0.5 2021 10 Tyonek 77-3 3.6 10.0 6.4 SCU 42-05Y 10/31/2021 3070 10/31/2021 2293.0 4440.3 0.5 2021 11 Tyonek 77-3 144.4 0.2 -144.2 SCU 42-05X 11/30/2021 2735 11/30/2021 2148.8 3629.9 0.6 2021 12 Tyonek 77-3 144.1 0.3 -143.8 SCU 42-05X 12/31/2021 2740 12/2/2021 2005.0 3635.4 0.8 2022 1 Tyonek 77-3 145.3 0.0 -145.3 SCU 42-05X 1/31/2022 2251 1/26/2022 1859.7 3059.4 0.9 2022 2 Tyonek 77-3 186.2 0.0 -186.2 SCU 42-05Y 2/28/2022 2130 2/4/2022 1673.5 3338.7 1.1 2022 3 Tyonek 77-3 85.7 0.0 -85.6 SCU 42-05X 3/31/2022 1768.215 3/25/2022 1587.9 2425.7 1.2 2022 4 Tyonek 77-3 12.8 10.2 -2.6 SCU 42-05X 4/30/2022 1805 4/30/2022 1585.2 2476.2 1.2 2022 5 Tyonek 77-3 0.5 433.9 433.4 SCU 42-05X 5/31/2022 1808 5/1/2022 2018.6 2480.3 0.8 2022 6 Tyonek 77-3 0.0 227.4 227.4 SCU 42-05X 6/30/2022 3234 6/30/2022 2246.1 4150.1 0.5 2022 7 Tyonek 77-3 0.0 0.0 0.0 SCU 42-05X 7/31/2022 3118 7/31/2022 2246.1 4035.3 0.5 2022 8 Tyonek 77-3 0.1 41.9 41.9 SCU 42-05X 8/31/2022 3163 8/31/2022 2288.0 4080.3 0.5 2022 9 Tyonek 77-3 0.6 91.9 91.3 SCU 42-05X 9/30/2022 3349 9/30/2022 2379.3 4260.2 0.4 2022 10 Tyonek 77-3 12.5 105.8 93.3 SCU 42-05Y 10/31/2022 3480 10/31/2022 2472.6 4802.4 0.3 2022 11 Tyonek 77-3 32.1 1.5 -30.6 SCU 42-05X 11/30/2022 3361 11/30/2022 2442.0 4271.5 0.3 2022 12 Tyonek 77-3 169.4 0.3 -169.1 SCU 42-05Y 12/31/2022 3150 12/20/2022 2272.9 4516.6 0.5 2023 1 Tyonek 77-3 111.4 1.4 -110.0 SCU 42-05Y 1/31/2023 2725 1/31/2023 2162.9 4079.9 0.6 2023 2 Tyonek 77-3 29.2 0.0 -29.2 SCU 42-05Y 2/28/2023 2704 2/28/2023 2133.7 4056.3 0.6 2023-02-28, 0.644 2023-01-31, 0.614 2022-12-20, 0.504 2022-11-30, 0.335 2022-10-31, 0.305 2022-09-30, 0.398 2022-08-31, 0.489 2022-07-31, 0.531 2022-06-30, 0.531 2022-05-01, 0.759 2022-04-30, 1.192 2022-03-25, 1.19 2022-02-04, 1.104 2022-01-26, 0.918 0 1,000 2,000 3,000 4,000 5,000 6,000 -0.50 0.00 0.50 1.00 1.50 2.00 P/ z ( p s i ) Gp (BCF) Tyonek 77-3 All Data Current Data Mean
