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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Great American Royalties, Inc. | North Dakota | 1,459 BBLs | 0 MCF | Dec 1979 - Oct 2024 |
| Great Plains Energy, Inc. | Kansas | 2,246 BBLs | 0 MCF | Jan 1980 - Jul 2024 |
| Green Reserve Energy Holdings LLC | Wyoming | 9,662 BBLs | 749 MCF | Dec 2020 - Sep 2024 |
| Greenwood Resources L.L.C. | Kansas | 1,306 BBLs | 0 MCF | Jan 1980 - Jul 2024 |
| Greylock Production LLC | Wyoming | 11,721 BBLs | 861,458 MCF | Feb 2022 - Sep 2024 |
| Greylock Production, LLC | Utah | 18,836 BBLs | 1,174,123 MCF | Apr 2022 - Sep 2024 |
| Griffin & Griffin Expl, LLC | Louisiana | 2,318 BBLs | 0 MCF | Feb 2007 - Jul 2024 |
| Griffin, Charles N. | Kansas | 36,866 BBLs | 3,482 MCF | Jun 1980 - Jul 2024 |
| Gunnison Energy LLC | Colorado | 0 BBLs | 107,200 MCF | Jul 2014 - Aug 2024 |
| H & B Petroleum Corp. | Kansas | 7,725 BBLs | 885 MCF | Jan 1980 - Jul 2024 |
| H & C Oil Operating Inc. | Kansas | 6,020 BBLs | 0 MCF | Jan 1980 - Jul 2024 |
| H & D Exploration LLC | Kansas | 1,710 BBLs | 0 MCF | May 1983 - Jul 2024 |
| H L Brown Operating, LLC | New Mexico | 7,793 BBLs | 17,198 MCF | Jun 2001 - Sep 2024 |
| H R F Exploration And Production LLC | Michigan | 0 BBLs | 138,274 MCF | Jan 2006 - Aug 2024 |
| Haas Petroleum, LLC | Kansas | 1,489 BBLs | 0 MCF | Jan 1980 - Jul 2024 |
| Habit Petroleum, LLC | Kansas | 1,133 BBLs | 0 MCF | Jan 1980 - Jul 2024 |
| Hale Oil | Louisiana | 1,167 BBLs | 0 MCF | Jan 1995 - Jun 2024 |
| Hale Oil Co. | Louisiana | 1,693 BBLs | 0 MCF | Apr 1985 - Jul 2024 |
| Hanna Oil And Gas Company | Arkansas | 0 BBLs | 359,107 MCF | Jan 2001 - Jun 2024 |
| Hartman Oil Co., Inc. | Kansas | 19,733 BBLs | 9,355 MCF | Jan 1980 - Jul 2024 |
| Harvard Petroleum Company, LLC | New Mexico | 55,239 BBLs | 194,502 MCF | Jan 1993 - Sep 2024 |
| Harvest Petroleum Partners, LLC | New Mexico | 1,187 BBLs | 1,351 MCF | Mar 2024 - Sep 2024 |
| Hawkins Oil, LLC | Kansas | 1,857 BBLs | 0 MCF | Jan 1980 - Jul 2024 |
| HB Energy LLC | Kansas | 1,177 BBLs | 0 MCF | Apr 1981 - Jul 2024 |
| Herman L. Loeb, LLC | Kansas | 22,278 BBLs | 116,864 MCF | Jan 1980 - Jul 2024 |
| Heron Operating, LLC | Mississippi | 1,316 BBLs | 0 MCF | Dec 1976 - Sep 2024 |
| Hertel Oil Company LLC | Kansas | 1,247 BBLs | 0 MCF | Jan 1980 - Jul 2024 |
| Hesperus Energy II LLC | Wyoming | 1,268 BBLs | 0 MCF | Sep 2024 - Sep 2024 |
| Hess Bakken Investments II, LLC | North Dakota | 2,770,190 BBLs | 12,247,195 MCF | Jan 2014 - Sep 2024 |
| Hess Oil Company | Kansas | 6,593 BBLs | 0 MCF | Jan 1980 - Jul 2024 |
| HG Oil Holdings, LLC | Kansas | 20,486 BBLs | 769 MCF | Jan 2020 - Jul 2024 |
| High River Resources Operating LLC | Colorado | 0 BBLs | 83,290 MCF | Aug 2019 - Sep 2024 |
| High River Resources Operating, LLC | New Mexico | 4,019 BBLs | 424,369 MCF | Nov 2023 - Sep 2024 |
| Highmark Energy Operating, LLC | Louisiana | 396 BBLs | 87,444 MCF | Jun 2014 - Jun 2024 |
| Hilcorp Alaska, LLC | Alaska | 2,245,989 BBLs | 32,002,867 MCF | May 2006 - Sep 2024 |
| Hilcorp Energy Company | Colorado | 77 BBLs | 1,993,881 MCF | Dec 2005 - Aug 2024 |
| Hilcorp Energy Company | Wyoming | 21,451 BBLs | 3,271,693 MCF | Jun 1997 - Sep 2024 |
| Hilcorp Energy Company, Inc. | Alabama | 23,298 BBLs | 174,437 MCF | Oct 1976 - Jun 2024 |
| Hilcorp North Slope, LLC | Alaska | 6,104,357 BBLs | 223,409,438 MCF | Jan 2019 - Sep 2024 |
| Hillenburg Oil Co., A General Partnership | Kansas | 1,626 BBLs | 0 MCF | Jan 1980 - Jul 2024 |
| Howell Oil Company, Inc. | Kansas | 2,280 BBLs | 0 MCF | Jul 1985 - Jul 2024 |
| Hudson Oil Company Of Texas | New Mexico | 2,029 BBLs | 4,409 MCF | Jan 1993 - Sep 2024 |
| Hughes Eastern Corporation | Alabama | 2,828 BBLs | 8,057 MCF | Sep 1977 - Jun 2024 |
| Hughes Eastern Corporation | Louisiana | 1,542 BBLs | 712 MCF | May 1986 - Jun 2024 |
| Hunt Oil Company | North Dakota | 287,794 BBLs | 292,883 MCF | Aug 1956 - Sep 2024 |
| Huntington Energy LLC | Wyoming | 2,921 BBLs | 1,783 MCF | Dec 2006 - Sep 2024 |
| Huntington Energy, LLC | New Mexico | 0 BBLs | 43,350 MCF | Apr 2003 - Sep 2024 |
| Hyperion Oil & Gas LLC | Wyoming | 6,525 BBLs | 46,269 MCF | Feb 2010 - Sep 2024 |
| Ia Operating, Inc. | Kansas | 6,867 BBLs | 0 MCF | Apr 1997 - Jul 2024 |
| Igwt, Inc. | Kansas | 1,318 BBLs | 0 MCF | Jan 1980 - Jul 2024 |