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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Gadeco, LLC | North Dakota | 1,941 BBLs | 4,051 MCF | Jul 2012 - Jul 2026 |
| Gaines Operating, LLC | Louisiana | 1,844 BBLs | 0 MCF | Apr 2000 - Dec 2024 |
| Gde Tiger Petroleum, LLC | Louisiana | 693 BBLs | 7,999 MCF | May 2023 - Dec 2024 |
| George D. Hartfield Oil & Gas, Inc. | Louisiana | 1,977 BBLs | 0 MCF | Nov 1989 - Dec 2024 |
| Geoterre Operating, L.L.C. | Louisiana | 7,780 BBLs | 682 MCF | Mar 2019 - Dec 2024 |
| Gep Haynesville II, LLC | Louisiana | 0 BBLs | 14,445,858 MCF | Sep 2021 - Dec 2024 |
| Gilbert-Stewart Operating LLC | Kansas | 1,966 BBLs | 0 MCF | Jun 2002 - May 2026 |
| Gladney Energy Partners, LLC | Louisiana | 1,661 BBLs | 1,007 MCF | Oct 2017 - Dec 2024 |
| GMT Exploration Company LLC | Colorado | 20,238 BBLs | 37,075 MCF | Jan 1999 - Jul 2026 |
| Gore Oil Company | Kansas | 15,429 BBLs | 2,549 MCF | Jan 1980 - May 2026 |
| Grady Bolding Corporation | Kansas | 2,584 BBLs | 0 MCF | Jan 1980 - May 2026 |
| Grand Mesa Operating Co | Colorado | 2,087 BBLs | 94 MCF | Jan 1999 - Jul 2026 |
| Grand Mesa Operating Company | Kansas | 11,499 BBLs | 19,976 MCF | Jan 1980 - May 2026 |
| Granite Creek Energy LLC | Montana | 10,801 BBLs | 5,597 MCF | Mar 2024 - Jul 2026 |
| Granite Creek Energy LLC | North Dakota | 2,062 BBLs | 1,571 MCF | Jan 2026 - Jul 2026 |
| Granite Creek Energy LLC | Wyoming | 15,202 BBLs | 76 MCF | May 2023 - Jul 2026 |
| Great American Royalties, Inc. | North Dakota | 1,455 BBLs | 0 MCF | Dec 1979 - Jul 2026 |
| Great Plains Energy, Inc. | Kansas | 936 BBLs | 0 MCF | Jan 1980 - May 2026 |
| Green Reserve Energy Holdings LLC | Wyoming | 7,673 BBLs | 1,708 MCF | Dec 2020 - Jul 2026 |
| Green Valley Operating, LLC | Montana | 2,091 BBLs | 2,323 MCF | Jun 2022 - Jul 2026 |
| Greenwood Resources L.L.C. | Kansas | 1,274 BBLs | 0 MCF | Jan 1980 - May 2026 |
| Greylock Production, LLC | Utah | 17,712 BBLs | 1,163,687 MCF | Apr 2022 - Jul 2026 |
| Griffin & Griffin Expl, LLC | Louisiana | 2,331 BBLs | 0 MCF | Feb 2007 - Dec 2024 |
| Gulf Production Company, Inc. | Louisiana | 1,398 BBLs | 0 MCF | Apr 1992 - Dec 2024 |
| H & B Petroleum Corp. | Kansas | 7,787 BBLs | 791 MCF | Jan 1980 - May 2026 |
| H & C Oil Operating Inc. | Kansas | 4,917 BBLs | 0 MCF | Jan 1980 - May 2026 |
| H & D Exploration LLC | Kansas | 1,670 BBLs | 1,692 MCF | May 1983 - May 2026 |
| H L Brown Operating, LLC | New Mexico | 6,556 BBLs | 39,030 MCF | Jun 2001 - Jul 2026 |
| H3 Oil & Gas | Kansas | 775 BBLs | 5,736 MCF | Jan 2020 - May 2026 |
| Hadley/Jackson Energy LLC | Wyoming | 1,667 BBLs | 0 MCF | Nov 2019 - Jul 2026 |
| 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 |
| Hartman Oil Co., Inc. | Kansas | 19,387 BBLs | 10,253 MCF | Jan 1980 - May 2026 |
| Harvard Petroleum Company, LLC | New Mexico | 41,833 BBLs | 139,585 MCF | Jan 1993 - Jul 2026 |
| Hayden Operating | Kansas | 1,023 BBLs | 704 MCF | Jan 1983 - May 2026 |
| Hayes Oil & Gas LLC | Kansas | 1,259 BBLs | 11,503 MCF | Jan 1980 - May 2026 |
| HB Energy LLC | Kansas | 1,103 BBLs | 0 MCF | Apr 1981 - May 2026 |
| Henergy Oil & Gas LLC | Louisiana | 1,623 BBLs | 0 MCF | Mar 2019 - Jan 2025 |
| Herman L. Loeb, LLC | Kansas | 25,775 BBLs | 110,423 MCF | Jan 1980 - May 2026 |
| Hertel Oil Company LLC | Kansas | 1,102 BBLs | 0 MCF | Jan 1980 - May 2026 |
| Hesperus Energy II LLC | Wyoming | 1,332 BBLs | 0 MCF | Sep 2024 - Jul 2026 |
| Hess Bakken Investments II, LLC | North Dakota | 2,596,791 BBLs | 11,923,421 MCF | Jan 2014 - Jul 2026 |
| Hess Oil Company | Kansas | 8,012 BBLs | 0 MCF | Jan 1980 - May 2026 |
| HG Oil Holdings, LLC | Kansas | 15,966 BBLs | 0 MCF | Jan 2020 - May 2026 |
| High River Resources Operating LLC | Colorado | 0 BBLs | 314,557 MCF | Jan 1999 - Jul 2026 |
| High River Resources Operating, LLC | New Mexico | 4,729 BBLs | 1,385,552 MCF | Nov 2023 - Aug 2026 |
| High River Resources Operating, LLC | Utah | 5,106 BBLs | 870,952 MCF | May 2026 - Jul 2026 |
| Highmark Energy Operating, LLC | Mississippi | 55,169 BBLs | 0 MCF | Jan 2025 - Jun 2026 |
| Hilcorp Alaska, LLC | Alaska | 7,870,320 BBLs | 281,397,383 MCF | May 2006 - Mar 2026 |
| Hilcorp Energy Company | Colorado | 82 BBLs | 1,959,314 MCF | Jan 1999 - Jul 2026 |