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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| 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 | 1,746 BBLs | 6,643 MCF | Sep 1977 - Jul 2025 |
| Hunt Oil Company | North Dakota | 483,151 BBLs | 432,295 MCF | Aug 1956 - Aug 2025 |
| Huntington Energy LLC | Wyoming | 3,010 BBLs | 1,943 MCF | Dec 2006 - Sep 2025 |
| Huntington Energy, LLC | New Mexico | 0 BBLs | 41,558 MCF | Apr 2003 - Aug 2025 |
| Hyperion Oil & Gas LLC | Wyoming | 6,399 BBLs | 44,184 MCF | Feb 2010 - Aug 2025 |
| Ia Operating, Inc. | Kansas | 8,172 BBLs | 0 MCF | Apr 1997 - Jun 2025 |
| Iacx Production LLC | New Mexico | 32 BBLs | 288,333 MCF | Apr 2020 - Aug 2025 |
| Impact Energy Operating LLC | Wyoming | 21,425 BBLs | 0 MCF | Aug 2022 - Sep 2025 |
| Impact Exploration & Production LLC | Wyoming | 149,477 BBLs | 304,646 MCF | Apr 2018 - Sep 2025 |
| Impetro Resources LLC | Colorado | 11,469 BBLs | 0 MCF | Jan 1999 - Aug 2025 |
| Indian Exploration, Inc. | Louisiana | 1,621 BBLs | 0 MCF | Feb 1992 - Jan 2025 |
| Indian Oil Co., Inc. | Kansas | 4,876 BBLs | 34,548 MCF | Jan 1980 - Jun 2025 |
| Investment Equipment LLC | Colorado | 1,466 BBLs | 295 MCF | Jan 1999 - Aug 2025 |
| J R Oil, LTD. Co. | New Mexico | 17,937 BBLs | 127,464 MCF | Dec 2007 - Aug 2025 |
| J-V Oil, LLC | Kansas | 2,355 BBLs | 1,037 MCF | Jan 1980 - Jun 2025 |
| J. P. Van Way | Louisiana | 10,876 BBLs | 20,979 MCF | Jul 1981 - Dec 2024 |
| J. R. Pounds, Inc. | Mississippi | 1,747 BBLs | 180 MCF | Nov 1976 - Aug 2025 |
| Jabsco Oil Operating, LLC | Alabama | 618 BBLs | 41,121 MCF | Feb 1977 - Jul 2025 |
| Jack L. Phillips Co. | Mississippi | 4,091 BBLs | 1,107 MCF | Dec 1976 - Aug 2025 |
| James Drilling Co., Inc. | Louisiana | 3,109 BBLs | 0 MCF | Oct 1986 - Dec 2024 |
| James P. Williams Enterprises, Inc. | Kansas | 2,312 BBLs | 0 MCF | Feb 2010 - Jun 2025 |
| Jason Oil Company, LLC | Kansas | 6,894 BBLs | 0 MCF | Jan 1980 - Jun 2025 |
| Jaspar Co. | Kansas | 5,496 BBLs | 0 MCF | Jan 1980 - Jun 2025 |
| Javelin Energy Partners Management, LLC | Utah | 634,750 BBLs | 2,315,778 MCF | Jun 2022 - Aug 2025 |
| Jay Management Company, LLC | New Mexico | 1,012 BBLs | 14,175 MCF | Mar 2007 - Aug 2025 |
| Jel Resources, LLC | Kansas | 1,251 BBLs | 5 MCF | Feb 2018 - Jun 2025 |
| Jettison, Inc. | North Dakota | 1,215 BBLs | 1,616 MCF | Jul 2002 - Sep 2025 |
| Jicarilla Energy Co | New Mexico | 1,103 BBLs | 145,185 MCF | Jan 1993 - Aug 2025 |
| Jimmy P Dempsey | Louisiana | 3,436 BBLs | 0 MCF | Jan 1977 - Jan 2025 |
| Jody Oil & Gas Corporation | Kansas | 1,121 BBLs | 20,693 MCF | Jan 1980 - Jun 2025 |
| Joe Gerstner Oil, LLC | Kansas | 1,278 BBLs | 0 MCF | Jan 1980 - Jun 2025 |
| John J. Welsh | Louisiana | 2,799 BBLs | 38,045 MCF | Dec 1988 - Dec 2024 |
| John Roy Evans Oil Company LLC | Kansas | 1,606 BBLs | 0 MCF | Jan 1980 - Jun 2025 |
| Jonah Energy LLC | New Mexico | 347,402 BBLs | 4,225,936 MCF | Feb 2025 - Aug 2025 |
| Jonah Energy LLC | Wyoming | 71,359 BBLs | 8,752,398 MCF | Jun 2014 - Aug 2025 |
| Jones & Buck Development, LLC | Kansas | 4,436 BBLs | 0 MCF | Jan 1980 - Jun 2025 |
| Jones Oil Exploration, LLC | Kansas | 1,936 BBLs | 0 MCF | Jan 2010 - Jun 2025 |
| Jordan Development Company LLC | Michigan | 4,630 BBLs | 188,394 MCF | Feb 1982 - Aug 2025 |
| Jordan Oil Management Inc. | Kansas | 2,740 BBLs | 1,347 MCF | Jan 1980 - Jun 2025 |
| JP Oil Wyoming LLC | Wyoming | 3,569 BBLs | 10,586 MCF | Jan 1993 - Sep 2025 |
| JSB, LLC | Louisiana | 3,742 BBLs | 0 MCF | Mar 2000 - Dec 2024 |
| JTC Oil, Inc. | Kansas | 1,271 BBLs | 0 MCF | Jan 1980 - Jun 2025 |
| Justiss Oil Company, Inc. | Louisiana | 5,227 BBLs | 24,749 MCF | Mar 1981 - Dec 2024 |
| K & N Petroleum, Inc. | Kansas | 4,698 BBLs | 0 MCF | Jan 1980 - Jun 2025 |
| K P Kauffman Company Inc | Colorado | 11,661 BBLs | 68,628 MCF | Jan 1999 - Aug 2025 |
| K&M Resources LLC | New Mexico | 1,397 BBLs | 134 MCF | Apr 2021 - Aug 2025 |
| K-Bar Oil LLC | Kansas | 2,053 BBLs | 0 MCF | Jan 2010 - Jun 2025 |