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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Goodale Enterprises LLC | Michigan | 4,097 BBLs | 0 MCF | Jan 1985 - Aug 2025 |
| Gore Oil Company | Kansas | 18,228 BBLs | 1,930 MCF | Jan 1980 - Jun 2025 |
| Grady Bolding Corporation | Kansas | 1,983 BBLs | 0 MCF | Jan 1980 - Jun 2025 |
| Grand Mesa Operating Co | Colorado | 2,819 BBLs | 278 MCF | Jan 1999 - Aug 2025 |
| Grand Mesa Operating Company | Kansas | 13,544 BBLs | 25,869 MCF | Jan 1980 - Jun 2025 |
| Granite Creek Energy LLC | Montana | 7,838 BBLs | 7,560 MCF | Mar 2024 - Jul 2025 |
| Granite Creek Energy LLC | Wyoming | 19,907 BBLs | 117 MCF | May 2023 - Aug 2025 |
| Grayson Mill Operating, LLC | North Dakota | 2,006,080 BBLs | 9,659,550 MCF | Nov 2021 - Aug 2025 |
| Great Plains Energy, Inc. | Kansas | 1,771 BBLs | 0 MCF | Jan 1980 - Jun 2025 |
| Green Reserve Energy Holdings LLC | Wyoming | 7,735 BBLs | 1,536 MCF | Dec 2020 - Aug 2025 |
| Green Valley Operating, LLC | Montana | 2,504 BBLs | 2,514 MCF | Jun 2022 - Jul 2025 |
| Greylock Production LLC | Wyoming | 9,542 BBLs | 927,180 MCF | Feb 2022 - Jul 2025 |
| Greylock Production, LLC | Utah | 18,223 BBLs | 1,212,106 MCF | Apr 2022 - Jul 2025 |
| Griffin & Griffin Expl, LLC | Louisiana | 2,331 BBLs | 0 MCF | Feb 2007 - Dec 2024 |
| Griffin & Griffin Exploration, LLC | Mississippi | 1,752 BBLs | 566 MCF | May 2000 - Jul 2025 |
| Griffin, Charles N. | Kansas | 13,652 BBLs | 15,289 MCF | Jun 1980 - Jun 2025 |
| Gulf Production Company, Inc. | Louisiana | 1,398 BBLs | 0 MCF | Apr 1992 - Dec 2024 |
| Gunnison Energy LLC | Colorado | 0 BBLs | 337,930 MCF | Jul 2014 - Jul 2025 |
| H & B Petroleum Corp. | Kansas | 8,265 BBLs | 824 MCF | Jan 1980 - Jun 2025 |
| H & C Oil Operating Inc. | Kansas | 4,733 BBLs | 0 MCF | Jan 1980 - Jun 2025 |
| H L Brown Operating, LLC | New Mexico | 8,842 BBLs | 25,344 MCF | Jun 2001 - Jul 2025 |
| H R F Antrim LP | Michigan | 0 BBLs | 41,764 MCF | Mar 1989 - Aug 2025 |
| H R F Exploration And Production LLC | Michigan | 0 BBLs | 136,147 MCF | Jan 2006 - Aug 2025 |
| Hadley/Jackson Energy LLC | Wyoming | 1,398 BBLs | 0 MCF | Nov 2019 - Aug 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 | 1,688 BBLs | 6,684 MCF | Jan 1993 - Jul 2025 |
| Hartman Oil Co., Inc. | Kansas | 20,761 BBLs | 9,209 MCF | Jan 1980 - Jun 2025 |
| Harvard Petroleum Company, LLC | New Mexico | 52,350 BBLs | 226,337 MCF | Jan 1993 - Aug 2025 |
| Harvest Petroleum Partners, LLC | New Mexico | 1,258 BBLs | 1,526 MCF | Mar 2024 - Aug 2025 |
| Hawkins Oil, LLC | Kansas | 1,955 BBLs | 0 MCF | Jan 1980 - Jun 2025 |
| Hayes Oil & Gas LLC | Kansas | 780 BBLs | 13,951 MCF | Jan 1980 - Jun 2025 |
| Henergy Oil & Gas LLC | Louisiana | 1,623 BBLs | 0 MCF | Mar 2019 - Jan 2025 |
| Herman L. Loeb, LLC | Kansas | 25,548 BBLs | 119,045 MCF | Jan 1980 - Jun 2025 |
| Hertel Oil Company LLC | Kansas | 2,180 BBLs | 0 MCF | Jan 1980 - Jun 2025 |
| Hesperus Energy II LLC | Wyoming | 1,625 BBLs | 0 MCF | Sep 2024 - Jul 2025 |
| Hess Bakken Investments II, LLC | North Dakota | 2,847,827 BBLs | 12,686,462 MCF | Jan 2014 - Aug 2025 |
| Hess Oil Company | Kansas | 6,291 BBLs | 0 MCF | Jan 1980 - Jun 2025 |
| HG Oil Holdings, LLC | Kansas | 16,139 BBLs | 452 MCF | Jan 2020 - Jun 2025 |
| High River Resources Operating LLC | Colorado | 0 BBLs | 72,501 MCF | Aug 2019 - Jul 2025 |
| High River Resources Operating, LLC | New Mexico | 4,754 BBLs | 432,912 MCF | Nov 2023 - Jul 2025 |
| Hilcorp Alaska, LLC | Alaska | 2,422,131 BBLs | 36,185,685 MCF | May 2006 - Aug 2025 |
| Hilcorp Energy Company | Colorado | 90 BBLs | 1,829,775 MCF | Dec 2005 - Aug 2025 |
| Hilcorp Energy Company | New Mexico | 141,971 BBLs | 24,633,222 MCF | Aug 2017 - Jul 2025 |
| Hilcorp Energy Company | Wyoming | 24,368 BBLs | 3,773,784 MCF | Jun 1997 - Aug 2025 |
| Hilcorp Energy Company, Inc. | Alabama | 22,400 BBLs | 171,062 MCF | Oct 1976 - Jul 2025 |
| Hilcorp North Slope, LLC | Alaska | 4,295,817 BBLs | 201,055,202 MCF | Jan 2019 - Aug 2025 |
| Hillenburg Oil Co., A General Partnership | Kansas | 1,464 BBLs | 0 MCF | Jan 1980 - Jun 2025 |
| Howell Oil Company, Inc. | Kansas | 2,439 BBLs | 0 MCF | Jul 1985 - Jun 2025 |
| Hughes Eastern Corporation | Alabama | 1,746 BBLs | 6,643 MCF | Sep 1977 - Jul 2025 |