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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| GMT Exploration Company LLC | Wyoming | 45 BBLs | 40,098 MCF | Feb 2005 - Feb 2025 |
| Goodale Enterprises LLC | Michigan | 3,850 BBLs | 0 MCF | Jan 1985 - Feb 2025 |
| Gore Oil Company | Kansas | 17,557 BBLs | 3,236 MCF | Jan 1980 - Dec 2024 |
| Grady Bolding Corporation | Kansas | 1,619 BBLs | 0 MCF | Jan 1980 - Dec 2024 |
| Grand Mesa Operating Co | Colorado | 2,310 BBLs | 88 MCF | Jan 1999 - Feb 2025 |
| Grand Mesa Operating Company | Kansas | 9,674 BBLs | 24,662 MCF | Jan 1980 - Dec 2024 |
| Granite Creek Energy LLC | Montana | 8,642 BBLs | 6,542 MCF | Mar 2024 - Jan 2025 |
| Granite Creek Energy LLC | Wyoming | 23,666 BBLs | 114 MCF | May 2023 - Jan 2025 |
| Grayson Mill Operating, LLC | North Dakota | 1,812,776 BBLs | 7,986,528 MCF | Nov 2021 - Feb 2025 |
| Great Plains Energy, Inc. | Kansas | 1,582 BBLs | 0 MCF | Jan 1980 - Dec 2024 |
| Green Reserve Energy Holdings LLC | Wyoming | 6,510 BBLs | 843 MCF | Dec 2020 - Feb 2025 |
| Green Valley Operating, LLC | Montana | 1,701 BBLs | 788 MCF | Jun 2022 - Jan 2025 |
| Greylock Production LLC | Wyoming | 10,712 BBLs | 782,378 MCF | Feb 2022 - Feb 2025 |
| Greylock Production, LLC | Utah | 17,406 BBLs | 1,128,869 MCF | Apr 2022 - Jan 2025 |
| Griffin & Griffin Expl, LLC | Louisiana | 2,331 BBLs | 0 MCF | Feb 2007 - Dec 2024 |
| Griffin, Charles N. | Kansas | 18,839 BBLs | 18,195 MCF | Jun 1980 - Dec 2024 |
| GRMR Oil & Gas LLC | Colorado | 1,227 BBLs | 1,927 MCF | Sep 2014 - Feb 2025 |
| Gulf Production Company, Inc. | Louisiana | 1,398 BBLs | 0 MCF | Apr 1992 - Dec 2024 |
| Gunnison Energy LLC | Colorado | 0 BBLs | 470,944 MCF | Jul 2014 - Jan 2025 |
| H & B Petroleum Corp. | Kansas | 6,866 BBLs | 843 MCF | Jan 1980 - Dec 2024 |
| H & C Oil Operating Inc. | Kansas | 5,221 BBLs | 0 MCF | Jan 1980 - Dec 2024 |
| H & D Exploration LLC | Kansas | 1,513 BBLs | 3,230 MCF | May 1983 - Dec 2024 |
| H L Brown Operating, LLC | New Mexico | 6,488 BBLs | 20,313 MCF | Jun 2001 - Jan 2025 |
| H R F Antrim LP | Michigan | 0 BBLs | 41,145 MCF | Mar 1989 - Jan 2025 |
| H R F Exploration And Production LLC | Michigan | 0 BBLs | 136,363 MCF | Jan 2006 - Feb 2025 |
| Hale Oil | Louisiana | 1,585 BBLs | 0 MCF | Jan 1995 - Dec 2024 |
| Hale Oil Co. | Louisiana | 1,611 BBLs | 0 MCF | Apr 1985 - Jan 2025 |
| Hanson Operating Co Inc | New Mexico | 1,651 BBLs | 6,871 MCF | Jan 1993 - Jan 2025 |
| Hartman Oil Co., Inc. | Kansas | 18,965 BBLs | 12,123 MCF | Jan 1980 - Dec 2024 |
| Harvard Petroleum Company, LLC | New Mexico | 53,022 BBLs | 211,778 MCF | Jan 1993 - Feb 2025 |
| Hawkins Oil, LLC | Kansas | 1,916 BBLs | 0 MCF | Jan 1980 - Dec 2024 |
| Henergy Oil & Gas LLC | Louisiana | 1,623 BBLs | 0 MCF | Mar 2019 - Jan 2025 |
| Herman L. Loeb, LLC | Kansas | 24,609 BBLs | 116,429 MCF | Jan 1980 - Dec 2024 |
| Hertel Oil Company LLC | Kansas | 1,485 BBLs | 0 MCF | Jan 1980 - Dec 2024 |
| Hess Bakken Investments II, LLC | North Dakota | 2,616,237 BBLs | 10,322,729 MCF | Jan 2014 - Feb 2025 |
| Hess Oil Company | Kansas | 5,738 BBLs | 0 MCF | Jan 1980 - Dec 2024 |
| HG Oil Holdings, LLC | Kansas | 15,944 BBLs | 654 MCF | Jan 2020 - Dec 2024 |
| High River Resources Operating, LLC | New Mexico | 5,116 BBLs | 399,829 MCF | Nov 2023 - Jan 2025 |
| Hilcorp Alaska, LLC | Alaska | 2,687,159 BBLs | 38,350,779 MCF | May 2006 - Feb 2025 |
| Hilcorp Energy Company | Colorado | 162 BBLs | 1,835,745 MCF | Dec 2005 - Feb 2025 |
| Hilcorp Energy Company | New Mexico | 63,080 BBLs | 24,900,513 MCF | Aug 2017 - Jan 2025 |
| Hilcorp Energy Company | Wyoming | 20,396 BBLs | 3,358,396 MCF | Jun 1997 - Feb 2025 |
| Hilcorp Energy Company, Inc. | Alabama | 21,911 BBLs | 168,999 MCF | Oct 1976 - Dec 2024 |
| Hilcorp North Slope, LLC | Alaska | 6,562,893 BBLs | 276,223,270 MCF | Jan 2019 - Feb 2025 |
| Howell Oil Company, Inc. | Kansas | 2,299 BBLs | 0 MCF | Jul 1985 - Dec 2024 |
| Hudson Oil Company Of Texas | New Mexico | 2,243 BBLs | 4,452 MCF | Jan 1993 - Feb 2025 |
| Hughes Eastern Corporation | Alabama | 2,520 BBLs | 5,515 MCF | Sep 1977 - Jan 2025 |
| Hunt Oil Company | North Dakota | 376,944 BBLs | 305,080 MCF | Aug 1956 - Feb 2025 |
| Huntington Energy LLC | Wyoming | 3,159 BBLs | 1,852 MCF | Dec 2006 - Feb 2025 |
| Huntington Energy, LLC | New Mexico | 0 BBLs | 41,251 MCF | Apr 2003 - Jan 2025 |