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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Diversified Production LLC | Louisiana | 8,836 BBLs | 3,242,940 MCF | May 2021 - Dec 2024 |
| Dixon Operating Company, LLC | Kansas | 11,466 BBLs | 46,104 MCF | Jan 2010 - Jun 2025 |
| DJR Operating, LLC | New Mexico | 519,891 BBLs | 1,452,150 MCF | Nov 2017 - Jul 2025 |
| Dorcheat Oil & Gas, LLC | Louisiana | 245 BBLs | 35,651 MCF | Mar 2016 - Dec 2024 |
| Double Eagle Exploration, Inc. | Kansas | 1,424 BBLs | 0 MCF | Jan 1980 - Jun 2025 |
| Double G Petro LLC | Kansas | 1,586 BBLs | 0 MCF | Jan 2024 - Jun 2025 |
| Downing-Nelson Oil Co Inc | Kansas | 20,655 BBLs | 0 MCF | Jan 1980 - Jun 2025 |
| Dugan Production Corp | New Mexico | 3,744 BBLs | 597,815 MCF | Jan 1993 - Jul 2025 |
| Dunamis Energy Operating LLC | Colorado | 57,500 BBLs | 61,573 MCF | Nov 2024 - Jul 2025 |
| Dunn Exploration Company, LLC | Louisiana | 68,232 BBLs | 141,231 MCF | Apr 2010 - Jan 2025 |
| Durango Operating LLC | Mississippi | 1,209 BBLs | 265 MCF | Dec 1976 - Jun 2025 |
| Durango Operating, LLC | Alabama | 2,178 BBLs | 29 MCF | May 1952 - Jul 2025 |
| E2 Operating, LLC | Mississippi | 3,080 BBLs | 309 MCF | Nov 1976 - Jun 2025 |
| Eagle Creek Corporation | Kansas | 3,715 BBLs | 902 MCF | Jan 1980 - Jun 2025 |
| Eagle Operating, Inc. | North Dakota | 5,540 BBLs | 6,262 MCF | Dec 1991 - Aug 2025 |
| Earthstone Operating, LLC | New Mexico | 1,276,513 BBLs | 3,551,840 MCF | Mar 2022 - Jul 2025 |
| Edge Energy LLC | Colorado | 30,961 BBLs | 309,900 MCF | Dec 2015 - Jul 2025 |
| Edison Operating Company LLC | Kansas | 15,901 BBLs | 242,794 MCF | Jan 1980 - Jun 2025 |
| Edmiston Oil Company, Inc. | Kansas | 2,067 BBLs | 9,995 MCF | Jan 1980 - Jun 2025 |
| Egh Operating, LLC | Louisiana | 1,847 BBLs | 0 MCF | Aug 2018 - Dec 2024 |
| Elevate Energy LTD | Kansas | 4,306 BBLs | 950 MCF | Jan 2020 - Jun 2025 |
| Elite Group LLC | Mississippi | 1,264 BBLs | 0 MCF | Dec 1976 - Jun 2025 |
| Elk Energy Holdings LLC | Kansas | 1,900 BBLs | 6,067 MCF | Jan 2010 - Jun 2025 |
| Elk Operating Services, LLC | Utah | 234,840 BBLs | 873,865 MCF | Jan 2018 - Aug 2025 |
| Elm III Operating Company LLC | Kansas | 1,347 BBLs | 13,749 MCF | Jan 1980 - Jun 2025 |
| Empire New Mexico LLC | New Mexico | 37,993 BBLs | 101,873 MCF | May 2021 - Jul 2025 |
| Empire North Dakota LLC | North Dakota | 26,475 BBLs | 7,106 MCF | Sep 2019 - Aug 2025 |
| Empresa Operating, LLC | Louisiana | 30,933 BBLs | 276,367 MCF | Sep 2019 - Dec 2024 |
| Emre Oil LLC | Wyoming | 3,125 BBLs | 0 MCF | Jul 2015 - Jul 2025 |
| Endurance Operating LLC | Louisiana | 1,790 BBLs | 7,885 MCF | Nov 2022 - Dec 2024 |
| Enduring Resources LLC | Colorado | 0 BBLs | 1,424,051 MCF | Nov 2017 - Jul 2025 |
| Enduring Resources, LLC | New Mexico | 327,416 BBLs | 1,446,695 MCF | Dec 2017 - Jul 2025 |
| Enerplus Resources USA Corporation | North Dakota | 1,739,933 BBLs | 4,070,132 MCF | Mar 2006 - Aug 2025 |
| Ensight IV Energy Management, LLC | Louisiana | 4,268 BBLs | 417,482 MCF | Jul 2017 - Dec 2024 |
| Enterra Resources, LLC | Kansas | 4,413 BBLs | 10,756 MCF | Jan 2010 - Jun 2025 |
| EOG Resources Inc | New Mexico | 10,789,980 BBLs | 55,314,492 MCF | Jan 1993 - Jul 2025 |
| EOG Resources Inc | Wyoming | 1,129,087 BBLs | 7,127,487 MCF | Jan 1978 - Aug 2025 |
| EOG Resources, Inc. | North Dakota | 625,734 BBLs | 1,617,691 MCF | Apr 2001 - Aug 2025 |
| Epic Energy LLC | Colorado | 0 BBLs | 30,159 MCF | Nov 2018 - Jul 2025 |
| Epic Energy, L.L.C. | New Mexico | 3,052 BBLs | 290,928 MCF | Mar 2018 - Jul 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 | 1,980,405 MCF | Dec 2018 - Aug 2025 |
| Ew Operating (NM), LLC | New Mexico | 4,425 BBLs | 7,504 MCF | Jul 2025 - Jul 2025 |
| Excalibur Production Company, Inc. | Kansas | 4,446 BBLs | 0 MCF | Jan 1980 - Jun 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 | 14,766 BBLs | 164,257 MCF | Apr 2021 - Aug 2025 |