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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| H L Brown Operating, LLC | New Mexico | 8,317 BBLs | 72,288 MCF | Jun 2001 - Oct 2018 |
| H R F Exploration And Production LLC | Michigan | 0 BBLs | 179,042 MCF | Oct 1990 - Apr 2018 |
| Haas Petroleum, LLC | Kansas | 15,069 BBLs | 0 MCF | Jan 1980 - Oct 2018 |
| Hale Oil | Louisiana | 2,471 BBLs | 5,524 MCF | Jan 1995 - Sep 2018 |
| Hale Oil Co. | Louisiana | 2,689 BBLs | 0 MCF | Apr 1985 - Sep 2018 |
| Hall Phoenix Energy, LLC | Arkansas | 0 BBLs | 45,746 MCF | Nov 2009 - Nov 2018 |
| Hallador Petroleum LLP | New Mexico | 73 BBLs | 48,976 MCF | Jan 1993 - Sep 2018 |
| Hallmark Oil And Gas Co., Inc. | Louisiana | 20 BBLs | 50,529 MCF | Jun 1992 - Sep 2018 |
| Hanna Oil And Gas Company | Arkansas | 0 BBLs | 383,891 MCF | Jan 2001 - Nov 2018 |
| Hanson Operating Co Inc | New Mexico | 1,527 BBLs | 13,186 MCF | Jan 1993 - Sep 2018 |
| Hartman Oil Co., Inc. | Kansas | 29,575 BBLs | 18,595 MCF | Jan 1980 - Oct 2018 |
| Harvard Petroleum Company, LLC | New Mexico | 3,249 BBLs | 8,722 MCF | Jan 1993 - Aug 2018 |
| Helis Oil & Gas Company LLC Estate | Wyoming | 40,508 BBLs | 20,412 MCF | Jan 1978 - Dec 2018 |
| Helis Oil & Gas Company, LLC | Louisiana | 91,385 BBLs | 51,597 MCF | Nov 2003 - Aug 2018 |
| Henderson Pet Corp Of Delaware | Louisiana | 2,316 BBLs | 6,431 MCF | Sep 1991 - Sep 2018 |
| Herman L. Loeb, LLC | Kansas | 32,118 BBLs | 118,826 MCF | Jan 1980 - Oct 2018 |
| Hertel Oil Company LLC | Kansas | 2,496 BBLs | 0 MCF | Jan 1980 - Oct 2018 |
| Hess Bakken Investments II, LLC | North Dakota | 3,119,272 BBLs | 6,581,964 MCF | Jan 2014 - Dec 2018 |
| Hess Oil Company | Kansas | 8,121 BBLs | 0 MCF | Jan 1980 - Oct 2018 |
| Highmark Energy Operating, LLC | Louisiana | 713 BBLs | 117,111 MCF | Jun 2014 - Aug 2018 |
| Hilcorp Alaska LLC | Alaska | 1,496,995 BBLs | 34,338,782 MCF | Nov 2011 - Dec 2018 |
| Hilcorp Energy Company | Colorado | 119 BBLs | 2,304,486 MCF | Dec 2005 - Nov 2018 |
| Hilcorp Energy Company | Louisiana | 555,264 BBLs | 3,618,117 MCF | Oct 1990 - Sep 2018 |
| Hilcorp Energy Company | New Mexico | 52,504 BBLs | 29,048,623 MCF | Aug 2017 - Sep 2018 |
| Hilcorp Energy Company | Wyoming | 25,029 BBLs | 3,362,560 MCF | Jan 1978 - Dec 2018 |
| Hilcorp Energy Company, Inc. | Alabama | 31,053 BBLs | 198,194 MCF | Oct 1976 - Oct 2018 |
| Hillenburg Oil Co., A General Partnership | Kansas | 2,743 BBLs | 0 MCF | Jan 1980 - Oct 2018 |
| Hogback Exploration, Inc. | Arkansas | 0 BBLs | 97,229 MCF | Jan 2001 - Nov 2018 |
| HRM Resources III LLC | Wyoming | 4,023 BBLs | 568,247 MCF | Jan 2017 - Dec 2018 |
| Hudson Group LLC | Wyoming | 2,982 BBLs | 311 MCF | Jan 1978 - Dec 2018 |
| Hudson Oil Company Of Texas | New Mexico | 3,201 BBLs | 9,116 MCF | Jan 1993 - Sep 2018 |
| Hughes Drilling Co, A General Partnership | Kansas | 2,458 BBLs | 0 MCF | Aug 1980 - Oct 2018 |
| Hughes Eastern Corporation | Alabama | 3,907 BBLs | 11,599 MCF | Sep 1977 - Oct 2018 |
| Hughes Eastern Corporation | Louisiana | 2,806 BBLs | 1,588 MCF | May 1986 - Sep 2018 |
| Hummon Corporation | Kansas | 2,780 BBLs | 8,740 MCF | Jan 1980 - Oct 2018 |
| Hunt Oil Company | North Dakota | 267,697 BBLs | 219,019 MCF | Aug 1956 - Dec 2018 |
| Huntington Energy LLC | Wyoming | 5,241 BBLs | 3,444 MCF | Jan 1980 - Dec 2018 |
| Huntington Energy, LLC | New Mexico | 2,869 BBLs | 105,544 MCF | Apr 2003 - Sep 2018 |
| Hyperion Oil & Gas LLC | Wyoming | 9,955 BBLs | 125,022 MCF | Jan 1979 - Dec 2018 |
| I.G. Petroleum, L.L.C | Louisiana | 2,582 BBLs | 0 MCF | Sep 2000 - Aug 2018 |
| Ia Operating, Inc. | Kansas | 6,528 BBLs | 0 MCF | Apr 1997 - Oct 2018 |
| Impact Exploration & Production LLC | Wyoming | 40,241 BBLs | 148,027 MCF | Jan 2017 - Dec 2018 |
| Impetro Operating LLC | New Mexico | 35,307 BBLs | 167,532 MCF | Jul 2018 - Oct 2018 |
| Incremental Oil & Gas USA Holdings Inc | Wyoming | 1,235 BBLs | 40,107 MCF | Jan 2015 - Dec 2018 |
| Indian Exploration, Inc. | Louisiana | 9,692 BBLs | 35 MCF | Feb 1992 - Oct 2018 |
| Indian Oil Co., Inc. | Kansas | 4,250 BBLs | 73,960 MCF | Jan 1980 - Oct 2018 |
| Indigo Minerals LLC | Louisiana | 15,241 BBLs | 16,720,736 MCF | Aug 2007 - Sep 2018 |
| Indigo Resources LLC | Louisiana | 3,195 BBLs | 793,154 MCF | Dec 2015 - Aug 2018 |
| Interstate Explorations LLC | Louisiana | 1,332 BBLs | 111,776 MCF | Sep 2012 - Aug 2018 |
| Investment Equipment LLC | Colorado | 3,376 BBLs | 2,265 MCF | Apr 2010 - Nov 2018 |