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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Dorcheat Oil & Gas, LLC | Louisiana | 245 BBLs | 35,651 MCF | Mar 2016 - Dec 2024 |
| Double Eagle Exploration, Inc. | Kansas | 1,277 BBLs | 0 MCF | Jan 1980 - Mar 2025 |
| Downing-Nelson Oil Co Inc | Kansas | 20,503 BBLs | 0 MCF | Jan 1980 - Mar 2025 |
| Dugan Production Corp | New Mexico | 4,138 BBLs | 574,734 MCF | Jan 1993 - Apr 2025 |
| Dunamis Energy Operating LLC | Colorado | 32,380 BBLs | 32,776 MCF | Nov 2024 - Apr 2025 |
| Dunn Exploration Company, LLC | Louisiana | 68,232 BBLs | 141,231 MCF | Apr 2010 - Jan 2025 |
| Durango Operating, LLC | Alabama | 2,073 BBLs | 28 MCF | May 1952 - Mar 2025 |
| E2 Operating, LLC | Mississippi | 4,002 BBLs | 400 MCF | Nov 1976 - Apr 2025 |
| Eagle Creek Corporation | Kansas | 2,531 BBLs | 529 MCF | Jan 1980 - Mar 2025 |
| Eagle Operating, Inc. | North Dakota | 5,768 BBLs | 4,862 MCF | Dec 1991 - May 2025 |
| Earthstone Operating, LLC | New Mexico | 1,325,684 BBLs | 3,283,235 MCF | Mar 2022 - Apr 2025 |
| Edge Energy LLC | Colorado | 35,509 BBLs | 321,815 MCF | Dec 2015 - Apr 2025 |
| Edison Operating Company LLC | Kansas | 14,654 BBLs | 187,549 MCF | Jan 1980 - Mar 2025 |
| Edmiston Oil Company, Inc. | Kansas | 1,311 BBLs | 8,588 MCF | Jan 1980 - Mar 2025 |
| Egh Operating, LLC | Louisiana | 1,847 BBLs | 0 MCF | Aug 2018 - Dec 2024 |
| Elevate Energy LTD | Kansas | 2,833 BBLs | 961 MCF | Jan 2020 - Mar 2025 |
| Elk Energy Holdings LLC | Kansas | 1,945 BBLs | 869 MCF | Jan 2010 - Mar 2025 |
| Elk Operating Services, LLC | Utah | 244,519 BBLs | 800,867 MCF | Jan 2018 - May 2025 |
| Elm III Operating Company LLC | Kansas | 1,522 BBLs | 9,896 MCF | Jan 1980 - Mar 2025 |
| Empire New Mexico LLC | New Mexico | 34,632 BBLs | 101,769 MCF | May 2021 - Apr 2025 |
| Empire North Dakota LLC | North Dakota | 22,475 BBLs | 7,220 MCF | Sep 2019 - May 2025 |
| Empresa Operating, LLC | Louisiana | 30,933 BBLs | 276,367 MCF | Sep 2019 - Dec 2024 |
| Emre Oil LLC | Wyoming | 3,380 BBLs | 0 MCF | Jul 2015 - May 2025 |
| Endurance Operating LLC | Louisiana | 1,790 BBLs | 7,885 MCF | Nov 2022 - Dec 2024 |
| Enduring Resources LLC | Colorado | 0 BBLs | 429,379 MCF | Nov 2017 - Apr 2025 |
| Enduring Resources, LLC | New Mexico | 336,596 BBLs | 1,483,171 MCF | Dec 2017 - Apr 2025 |
| Enerco Operating Corporation | Arkansas | 7,526 BBLs | 0 MCF | Jan 2001 - Jan 2025 |
| Enerplus Resources USA Corporation | North Dakota | 1,796,780 BBLs | 4,024,147 MCF | Mar 2006 - May 2025 |
| Ensight IV Energy Management, LLC | Louisiana | 4,268 BBLs | 417,482 MCF | Jul 2017 - Dec 2024 |
| Enterra Resources, LLC | Kansas | 4,915 BBLs | 8,713 MCF | Jan 2010 - Mar 2025 |
| EOG Resources Inc | New Mexico | 10,362,019 BBLs | 48,171,289 MCF | Jan 1993 - May 2025 |
| EOG Resources Inc | Wyoming | 1,286,161 BBLs | 7,248,172 MCF | Jan 1978 - May 2025 |
| EOG Resources, Inc. | North Dakota | 692,964 BBLs | 1,643,525 MCF | Apr 2001 - May 2025 |
| Epic Energy, L.L.C. | New Mexico | 3,337 BBLs | 302,519 MCF | Mar 2018 - Apr 2025 |
| Et Gathering & Processing LLC | Louisiana | 4,239 BBLs | 0 MCF | Oct 2023 - Dec 2024 |
| Ethyl Gas Company, LLC | Louisiana | 1,456 BBLs | 0 MCF | Nov 2021 - Jan 2025 |
| Evangeline Natural Resources, LLC | Louisiana | 3,123 BBLs | 24,531 MCF | Aug 2013 - Jan 2025 |
| Evergreen Natural Resources LLC | Colorado | 0 BBLs | 1,936,686 MCF | Dec 2018 - Apr 2025 |
| Excalibur Production Company, Inc. | Kansas | 5,024 BBLs | 0 MCF | Jan 1980 - Mar 2025 |
| Excel Operating Corporation | Louisiana | 611 BBLs | 13,099 MCF | Jan 1997 - Dec 2024 |
| Exco Operating Company, LP | Louisiana | 0 BBLs | 7,351,709 MCF | Jul 2008 - Dec 2024 |
| Extex Operating Co | Louisiana | 3,073 BBLs | 7,467 MCF | Dec 1999 - Dec 2024 |
| Extex Operating Company | New Mexico | 14,138 BBLs | 161,071 MCF | Apr 2021 - May 2025 |
| Extraction Oil & Gas LLC | Colorado | 680,903 BBLs | 5,769,048 MCF | Jul 2013 - Apr 2025 |
| Exxon Mobil Corporation | Alabama | 598 BBLs | 831,702 MCF | Nov 1971 - Mar 2025 |
| Exxon Mobil Corporation | Wyoming | 0 BBLs | 21,508,970 MCF | Jan 1978 - Apr 2025 |
| F. G. Holl Company L.L.C. | Kansas | 6,420 BBLs | 9,532 MCF | Jan 1980 - Mar 2025 |
| Fae II Operating LLC | New Mexico | 18,702 BBLs | 99,421 MCF | Dec 2019 - May 2025 |
| Fairways Exploration & Production, LLC | Alabama | 1,182 BBLs | 401 MCF | Oct 2010 - Mar 2025 |
| Faith Energy, L.L.C. | Louisiana | 1,209 BBLs | 0 MCF | Jul 2000 - Jan 2025 |