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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Goodale Enterprises LLC | Michigan | 4,818 BBLs | 0 MCF | Jan 1985 - Jun 2025 |
| Gore Oil Company | Kansas | 15,351 BBLs | 2,977 MCF | Jan 1980 - Apr 2025 |
| Grady Bolding Corporation | Kansas | 2,711 BBLs | 0 MCF | Jan 1980 - Apr 2025 |
| Grand Mesa Operating Co | Colorado | 3,704 BBLs | 314 MCF | Jan 1999 - Jul 2025 |
| Grand Mesa Operating Company | Kansas | 13,474 BBLs | 26,650 MCF | Jan 1980 - Apr 2025 |
| Granite Creek Energy LLC | Montana | 9,740 BBLs | 7,496 MCF | Mar 2024 - Jun 2025 |
| Granite Creek Energy LLC | Wyoming | 19,852 BBLs | 107 MCF | May 2023 - Jun 2025 |
| Grayson Mill Operating, LLC | North Dakota | 1,979,604 BBLs | 9,274,933 MCF | Nov 2021 - Jun 2025 |
| Great American Royalties, Inc. | North Dakota | 1,440 BBLs | 0 MCF | Dec 1979 - Jul 2025 |
| Great Plains Energy, Inc. | Kansas | 1,893 BBLs | 0 MCF | Jan 1980 - Apr 2025 |
| Green Reserve Energy Holdings LLC | Wyoming | 6,670 BBLs | 1,411 MCF | Dec 2020 - Jul 2025 |
| Green Valley Operating, LLC | Montana | 3,368 BBLs | 2,651 MCF | Jun 2022 - Jun 2025 |
| Greylock Production LLC | Wyoming | 9,274 BBLs | 898,908 MCF | Feb 2022 - Jun 2025 |
| Greylock Production, LLC | Utah | 17,501 BBLs | 1,120,184 MCF | Apr 2022 - Jun 2025 |
| Griffin & Griffin Expl, LLC | Louisiana | 2,331 BBLs | 0 MCF | Feb 2007 - Dec 2024 |
| Griffin, Charles N. | Kansas | 15,939 BBLs | 17,084 MCF | Jun 1980 - Apr 2025 |
| GRMR Oil & Gas LLC | Colorado | 1,515 BBLs | 1,686 MCF | Sep 2014 - Jun 2025 |
| Gulf Production Company, Inc. | Louisiana | 1,398 BBLs | 0 MCF | Apr 1992 - Dec 2024 |
| Gunnison Energy LLC | Colorado | 0 BBLs | 364,592 MCF | Jul 2014 - Jun 2025 |
| H & B Petroleum Corp. | Kansas | 7,925 BBLs | 867 MCF | Jan 1980 - Apr 2025 |
| H & C Oil Operating Inc. | Kansas | 5,951 BBLs | 0 MCF | Jan 1980 - Apr 2025 |
| H & D Exploration LLC | Kansas | 1,985 BBLs | 1,856 MCF | May 1983 - Apr 2025 |
| H L Brown Operating, LLC | New Mexico | 8,067 BBLs | 21,614 MCF | Jun 2001 - Jun 2025 |
| H R F Antrim LP | Michigan | 0 BBLs | 38,933 MCF | Mar 1989 - Jul 2025 |
| H R F Exploration And Production LLC | Michigan | 0 BBLs | 126,342 MCF | Jan 2006 - Jul 2025 |
| Hadley/Jackson Energy LLC | Wyoming | 1,285 BBLs | 0 MCF | Nov 2019 - Jun 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 | 1,759 BBLs | 6,589 MCF | Jan 1993 - Jun 2025 |
| Hartman Oil Co., Inc. | Kansas | 21,626 BBLs | 11,088 MCF | Jan 1980 - Apr 2025 |
| Harvard Petroleum Company, LLC | New Mexico | 49,485 BBLs | 181,744 MCF | Jan 1993 - Jun 2025 |
| Harvest Petroleum Partners, LLC | New Mexico | 1,152 BBLs | 1,651 MCF | Mar 2024 - Jun 2025 |
| Hawkins Oil, LLC | Kansas | 2,553 BBLs | 0 MCF | Jan 1980 - Apr 2025 |
| Hayes Oil & Gas LLC | Kansas | 917 BBLs | 12,971 MCF | Jan 1980 - Apr 2025 |
| Henergy Oil & Gas LLC | Louisiana | 1,623 BBLs | 0 MCF | Mar 2019 - Jan 2025 |
| Herman L. Loeb, LLC | Kansas | 25,200 BBLs | 120,755 MCF | Jan 1980 - Apr 2025 |
| Hertel Oil Company LLC | Kansas | 2,146 BBLs | 0 MCF | Jan 1980 - Apr 2025 |
| Hess Bakken Investments II, LLC | North Dakota | 2,913,710 BBLs | 12,459,279 MCF | Jan 2014 - Jul 2025 |
| Hess Oil Company | Kansas | 6,973 BBLs | 0 MCF | Jan 1980 - Apr 2025 |
| HG Oil Holdings, LLC | Kansas | 19,040 BBLs | 502 MCF | Jan 2020 - Apr 2025 |
| High River Resources Operating LLC | Colorado | 0 BBLs | 77,892 MCF | Aug 2019 - Jun 2025 |
| High River Resources Operating, LLC | New Mexico | 4,455 BBLs | 426,635 MCF | Nov 2023 - Jul 2025 |
| Hilcorp Alaska, LLC | Alaska | 2,527,083 BBLs | 35,803,122 MCF | May 2006 - Jul 2025 |
| Hilcorp Energy Company | Colorado | 97 BBLs | 1,776,488 MCF | Dec 2005 - Jun 2025 |
| Hilcorp Energy Company | New Mexico | 60,864 BBLs | 23,191,867 MCF | Aug 2017 - Jun 2025 |
| Hilcorp Energy Company | Wyoming | 26,568 BBLs | 3,607,176 MCF | Jun 1997 - Jun 2025 |
| Hilcorp Energy Company, Inc. | Alabama | 21,668 BBLs | 177,363 MCF | Oct 1976 - May 2025 |
| Hilcorp North Slope, LLC | Alaska | 5,972,886 BBLs | 234,866,813 MCF | Jan 2019 - Jul 2025 |
| Hillenburg Oil Co., A General Partnership | Kansas | 2,132 BBLs | 0 MCF | Jan 1980 - Apr 2025 |
| Howell Oil Company, Inc. | Kansas | 2,459 BBLs | 0 MCF | Jul 1985 - Apr 2025 |