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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Grayson Mill Operating, LLC | North Dakota | 1,740,935 BBLs | 5,425,113 MCF | Nov 2021 - Apr 2023 |
| Great Western Drilling Co | New Mexico | 653 BBLs | 69,454 MCF | Jan 1993 - Mar 2023 |
| Greylock Production, LLC | Utah | 20,026 BBLs | 1,214,271 MCF | Apr 2022 - Mar 2023 |
| Griffin & Griffin Expl, LLC | Louisiana | 3,863 BBLs | 0 MCF | Feb 2007 - Mar 2023 |
| Griffin, Charles N. | Kansas | 45,787 BBLs | 3,215 MCF | Jun 1980 - Jan 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 | 139,397 MCF | Jul 2014 - Mar 2023 |
| H & B Petroleum Corp. | Kansas | 7,902 BBLs | 1,039 MCF | Jan 1980 - Jan 2023 |
| H & C Oil Operating Inc. | Kansas | 7,500 BBLs | 0 MCF | Jan 1980 - Jan 2023 |
| H & D Exploration LLC | Kansas | 2,388 BBLs | 0 MCF | May 1983 - Jan 2023 |
| H L Brown Operating, LLC | New Mexico | 9,678 BBLs | 43,563 MCF | Jun 2001 - Mar 2023 |
| H R F Exploration And Production LLC | Michigan | 0 BBLs | 147,442 MCF | Apr 2009 - Mar 2022 |
| Haas Petroleum, LLC | Kansas | 2,725 BBLs | 0 MCF | Jan 1980 - Jan 2023 |
| Hadaway Consulting And Engineering LLC | Kansas | 3,257 BBLs | 14,618 MCF | Jan 2020 - Jan 2023 |
| 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 | 20,160 BBLs | 13,239 MCF | Jan 1980 - Jan 2023 |
| Harvard Petroleum Company, LLC | New Mexico | 56,345 BBLs | 193,662 MCF | Jan 1993 - Mar 2023 |
| Hawkins Oil, LLC | Kansas | 1,656 BBLs | 0 MCF | Jan 1980 - Jan 2023 |
| Helis Oil & Gas Company, LLC | Louisiana | 68,246 BBLs | 47,313 MCF | Nov 2003 - Mar 2023 |
| Herman L. Loeb, LLC | Kansas | 27,321 BBLs | 149,829 MCF | Jan 1980 - Jan 2023 |
| Hess Bakken Investments II, LLC | North Dakota | 2,567,147 BBLs | 9,772,556 MCF | Jan 2014 - Apr 2023 |
| Hess Oil Company | Kansas | 8,144 BBLs | 0 MCF | Jan 1980 - Jan 2023 |
| HG Oil Holdings, LLC | Kansas | 15,950 BBLs | 0 MCF | Jan 2020 - Jan 2023 |
| Highlander Oil & Gas Assets LLC | Louisiana | 0 BBLs | 154,430 MCF | Jun 2019 - Apr 2023 |
| Hilcorp Alaska, LLC | Alaska | 1,890,990 BBLs | 38,417,355 MCF | May 2006 - Apr 2023 |
| Hilcorp Energy Company | Louisiana | 513,374 BBLs | 1,716,966 MCF | Oct 1990 - Mar 2023 |
| Hilcorp Energy Company | New Mexico | 53,415 BBLs | 23,734,978 MCF | Aug 2017 - Mar 2023 |
| Hilcorp Energy Company | Wyoming | 16,453 BBLs | 3,044,180 MCF | Jun 1997 - Apr 2023 |
| Hilcorp Energy Company, Inc. | Alabama | 30,173 BBLs | 276,852 MCF | Oct 1976 - Feb 2023 |
| Hilcorp North Slope, LLC | Alaska | 6,903,655 BBLs | 270,037,645 MCF | Jan 2019 - Apr 2023 |
| Hillenburg Oil Co., A General Partnership | Kansas | 2,269 BBLs | 0 MCF | Jan 1980 - Jan 2023 |
| Hoffman Resources LLC | Kansas | 2,315 BBLs | 841 MCF | Jan 2010 - Jan 2023 |
| Hogback Exploration, Inc. | Arkansas | 0 BBLs | 83,998 MCF | Jan 2001 - Jun 2022 |
| Howell Oil Company, Inc. | Kansas | 2,306 BBLs | 0 MCF | Jul 1985 - Jan 2023 |
| Hudson Oil Company Of Texas | New Mexico | 2,414 BBLs | 5,571 MCF | Jan 1993 - Mar 2023 |
| Hughes Eastern Corporation | Alabama | 3,070 BBLs | 10,431 MCF | Sep 1977 - Feb 2023 |
| Hunt Oil Company | North Dakota | 610,006 BBLs | 432,272 MCF | Aug 1956 - Apr 2023 |
| Huntington Energy LLC | Wyoming | 3,895 BBLs | 2,223 MCF | Dec 2006 - Apr 2023 |
| Huntington Energy, LLC | New Mexico | 0 BBLs | 53,072 MCF | Apr 2003 - Mar 2023 |
| Hyperion Oil & Gas LLC | Wyoming | 9,264 BBLs | 60,369 MCF | Feb 2010 - Apr 2023 |
| Ia Operating, Inc. | Kansas | 5,173 BBLs | 0 MCF | Apr 1997 - Jan 2023 |
| Iacx Production LLC | New Mexico | 59 BBLs | 311,851 MCF | Apr 2020 - Mar 2023 |
| Impact Energy Operating LLC | Wyoming | 25,832 BBLs | 0 MCF | Aug 2022 - Mar 2023 |
| Impact Exploration & Production LLC | Wyoming | 166,944 BBLs | 336,666 MCF | Apr 2018 - Mar 2023 |
| Indian Exploration, Inc. | Louisiana | 2,178 BBLs | 0 MCF | Feb 1992 - Apr 2023 |
| Indian Oil Co., Inc. | Kansas | 7,121 BBLs | 46,165 MCF | Jan 1980 - Jan 2023 |
| Iron Oil Operating, LLC | North Dakota | 127,518 BBLs | 216,684 MCF | Jun 2017 - Apr 2023 |