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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Goodale Enterprises LLC | Michigan | 3,148 BBLs | 0 MCF | Jan 1985 - Sep 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 | 2,639 BBLs | 85 MCF | Jan 1999 - Aug 2025 |
| Grand Mesa Operating Company | Kansas | 13,544 BBLs | 25,869 MCF | Jan 1980 - Jun 2025 |
| Granite Creek Energy LLC | Wyoming | 19,022 BBLs | 69 MCF | May 2023 - Sep 2025 |
| Grayson Mill Operating, LLC | North Dakota | 1,964,212 BBLs | 9,534,969 MCF | Nov 2021 - Sep 2025 |
| Great Plains Energy, Inc. | Kansas | 1,771 BBLs | 0 MCF | Jan 1980 - Jun 2025 |
| Green Reserve Energy Holdings LLC | Wyoming | 7,056 BBLs | 706 MCF | Dec 2020 - Sep 2025 |
| Green Valley Operating, LLC | Montana | 2,336 BBLs | 1,892 MCF | Jun 2022 - Aug 2025 |
| Greenwood Resources L.L.C. | Kansas | 1,196 BBLs | 0 MCF | Jan 1980 - Jun 2025 |
| Greylock Production, LLC | Utah | 18,544 BBLs | 1,121,126 MCF | Apr 2022 - Sep 2025 |
| Griffin & Griffin Expl, LLC | Louisiana | 2,331 BBLs | 0 MCF | Feb 2007 - Dec 2024 |
| Griffin, Charles N. | Kansas | 13,652 BBLs | 15,289 MCF | Jun 1980 - Jun 2025 |
| GRMR Oil & Gas LLC | Colorado | 1,703 BBLs | 1,793 MCF | Jan 1999 - Aug 2025 |
| Gulf Production Company, Inc. | Louisiana | 1,398 BBLs | 0 MCF | Apr 1992 - Dec 2024 |
| Gunnison Energy LLC | Colorado | 0 BBLs | 332,090 MCF | Jan 1999 - Aug 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 - Sep 2025 |
| H R F Antrim LP | Michigan | 0 BBLs | 38,924 MCF | Mar 1989 - Sep 2025 |
| H R F Exploration And Production LLC | Michigan | 0 BBLs | 130,998 MCF | Jan 2006 - Oct 2025 |
| Hadley/Jackson Energy LLC | Wyoming | 1,302 BBLs | 0 MCF | Nov 2019 - Sep 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 - Sep 2025 |
| Harvest Petroleum Partners, LLC | New Mexico | 1,258 BBLs | 1,526 MCF | Mar 2024 - Sep 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 |
| HB Energy LLC | Kansas | 1,177 BBLs | 0 MCF | Apr 1981 - 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 |
| Hess Bakken Investments II, LLC | North Dakota | 2,893,168 BBLs | 12,809,206 MCF | Jan 2014 - Sep 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 | 86,090 MCF | Jan 1999 - Aug 2025 |
| High River Resources Operating, LLC | New Mexico | 4,754 BBLs | 432,912 MCF | Nov 2023 - Aug 2025 |
| Highmark Energy Operating LLC | Mississippi | 57,460 BBLs | 0 MCF | Jan 2025 - Aug 2025 |
| Hilcorp Alaska, LLC | Alaska | 2,493,445 BBLs | 32,235,484 MCF | May 2006 - Sep 2025 |
| Hilcorp Energy Company | Colorado | 157 BBLs | 1,842,292 MCF | Jan 1999 - Aug 2025 |
| Hilcorp Energy Company | New Mexico | 141,894 BBLs | 24,632,478 MCF | Aug 2017 - Sep 2025 |
| Hilcorp Energy Company | Wyoming | 23,099 BBLs | 3,663,450 MCF | Jun 1997 - Sep 2025 |
| Hilcorp Energy Company, Inc. | Alabama | 22,909 BBLs | 176,782 MCF | Oct 1976 - Sep 2025 |
| Hilcorp North Slope, LLC | Alaska | 5,789,011 BBLs | 229,821,861 MCF | Jan 2019 - Sep 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 | 1,635 BBLs | 7,829 MCF | Sep 1977 - Sep 2025 |