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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Gore Oil Company | Kansas | 16,246 BBLs | 807 MCF | Jan 1980 - Jul 2023 |
| Grady Bolding Corporation | Kansas | 3,040 BBLs | 0 MCF | Jan 1980 - Jul 2023 |
| Grand Mesa Operating Co | Colorado | 5,414 BBLs | 323 MCF | Jan 1999 - Oct 2023 |
| Grand Mesa Operating Company | Kansas | 10,967 BBLs | 24,829 MCF | Jan 1980 - Jul 2023 |
| Granite Creek Energy LLC | Wyoming | 3,715 BBLs | 670 MCF | May 2023 - Sep 2023 |
| Grayson Mill Operating, LLC | Montana | 6,218 BBLs | 18,354 MCF | Apr 2021 - Sep 2023 |
| Grayson Mill Operating, LLC | North Dakota | 2,832,767 BBLs | 10,203,759 MCF | Nov 2021 - Sep 2023 |
| Great Western Drilling Co | New Mexico | 781 BBLs | 60,480 MCF | Jan 1993 - Sep 2023 |
| Green Reserve Energy Holdings LLC | Wyoming | 11,331 BBLs | 1,271 MCF | Dec 2020 - Oct 2023 |
| Green Valley Operating, LLC | Montana | 2,245 BBLs | 2,376 MCF | Sep 2022 - Oct 2023 |
| Greylock Production LLC | Wyoming | 9,899 BBLs | 751,282 MCF | Feb 2022 - Sep 2023 |
| Greylock Production, LLC | Utah | 19,035 BBLs | 1,197,082 MCF | Apr 2022 - Sep 2023 |
| Griffin & Griffin Expl, LLC | Louisiana | 3,863 BBLs | 0 MCF | Feb 2007 - Mar 2023 |
| Griffin, Charles N. | Kansas | 29,017 BBLs | 9,213 MCF | Jun 1980 - Jul 2023 |
| Grit Operating, L.L.C. | Louisiana | 3,418 BBLs | 0 MCF | May 2019 - Mar 2023 |
| Gulf Production Company, Inc. | Louisiana | 2,364 BBLs | 0 MCF | Apr 1992 - Apr 2023 |
| Gunnison Energy LLC | Colorado | 0 BBLs | 114,705 MCF | Jul 2014 - Sep 2023 |
| H & B Petroleum Corp. | Kansas | 6,870 BBLs | 647 MCF | Jan 1980 - Jul 2023 |
| H & C Oil Operating Inc. | Kansas | 7,767 BBLs | 0 MCF | Jan 1980 - Jul 2023 |
| H & D Exploration LLC | Kansas | 3,229 BBLs | 6,398 MCF | May 1983 - Jul 2023 |
| H L Brown Operating, LLC | New Mexico | 6,705 BBLs | 15,334 MCF | Jun 2001 - Sep 2023 |
| H R F Antrim LP | Michigan | 0 BBLs | 49,786 MCF | Mar 1989 - Nov 2022 |
| H R F Exploration And Production LLC | Michigan | 0 BBLs | 147,371 MCF | Jan 2006 - Nov 2022 |
| Hale Oil | Louisiana | 1,835 BBLs | 0 MCF | Jan 1995 - Apr 2023 |
| Hale Oil Co. | Louisiana | 1,885 BBLs | 0 MCF | Apr 1985 - Apr 2023 |
| Hanna Oil And Gas Company | Arkansas | 0 BBLs | 372,962 MCF | Jan 2001 - Jun 2022 |
| Hartman Oil Co., Inc. | Kansas | 21,801 BBLs | 9,363 MCF | Jan 1980 - Jul 2023 |
| Harvard Petroleum Company, LLC | New Mexico | 57,891 BBLs | 192,380 MCF | Jan 1993 - Sep 2023 |
| Helis Oil & Gas Company, LLC | Louisiana | 68,246 BBLs | 47,313 MCF | Nov 2003 - Mar 2023 |
| Herman L. Loeb, LLC | Kansas | 26,662 BBLs | 110,204 MCF | Jan 1980 - Jul 2023 |
| Hertel Oil Company LLC | Kansas | 2,296 BBLs | 0 MCF | Jan 1980 - Jul 2023 |
| Hess Bakken Investments II, LLC | North Dakota | 2,578,112 BBLs | 10,539,399 MCF | Jan 2014 - Sep 2023 |
| Hess Oil Company | Kansas | 8,643 BBLs | 0 MCF | Jan 1980 - Jul 2023 |
| HG Oil Holdings, LLC | Kansas | 16,740 BBLs | 801 MCF | Jan 2020 - Jul 2023 |
| High River Resources Operating LLC | Colorado | 0 BBLs | 79,252 MCF | Nov 2019 - Sep 2023 |
| Highlander Oil & Gas Assets LLC | Louisiana | 0 BBLs | 154,430 MCF | Jun 2019 - Apr 2023 |
| Hilcorp Alaska, LLC | Alaska | 1,799,004 BBLs | 34,388,506 MCF | May 2006 - Oct 2023 |
| Hilcorp Energy Company | Louisiana | 513,374 BBLs | 1,716,966 MCF | Oct 1990 - Mar 2023 |
| Hilcorp Energy Company | New Mexico | 38,277 BBLs | 23,357,330 MCF | Aug 2017 - Sep 2023 |
| Hilcorp Energy Company | Wyoming | 21,215 BBLs | 3,445,546 MCF | Jun 1997 - Sep 2023 |
| Hilcorp Energy Company, Inc. | Alabama | 27,393 BBLs | 230,076 MCF | Oct 1976 - Jul 2023 |
| Hilcorp North Slope, LLC | Alaska | 5,843,462 BBLs | 220,561,278 MCF | Jan 2019 - Oct 2023 |
| Hillenburg Oil Co., A General Partnership | Kansas | 2,682 BBLs | 0 MCF | Jan 1980 - Jul 2023 |
| Hogback Exploration, Inc. | Arkansas | 0 BBLs | 83,998 MCF | Jan 2001 - Jun 2022 |
| Howell Oil Company, Inc. | Kansas | 2,278 BBLs | 0 MCF | Jul 1985 - Jul 2023 |
| Hudson Oil Company Of Texas | New Mexico | 2,209 BBLs | 5,049 MCF | Jan 1993 - Sep 2023 |
| Hughes Eastern Corporation | Alabama | 2,516 BBLs | 7,316 MCF | Sep 1977 - Jul 2023 |
| Hunt Oil Company | North Dakota | 363,723 BBLs | 364,852 MCF | Aug 1956 - Oct 2023 |
| Huntington Energy LLC | Wyoming | 3,571 BBLs | 1,326 MCF | Dec 2006 - Oct 2023 |
| Huntington Energy, LLC | New Mexico | 0 BBLs | 49,891 MCF | Apr 2003 - Sep 2023 |