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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Double G Petro LLC | Kansas | 2,091 BBLs | 0 MCF | Jan 2024 - Apr 2025 |
| Downing-Nelson Oil Co Inc | Kansas | 20,061 BBLs | 0 MCF | Jan 1980 - Apr 2025 |
| Dugan Production Corp | New Mexico | 4,704 BBLs | 575,785 MCF | Jan 1993 - Jun 2025 |
| Dunamis Energy Operating LLC | Colorado | 64,088 BBLs | 54,171 MCF | Nov 2024 - Jun 2025 |
| Dunn Exploration Company, LLC | Louisiana | 68,232 BBLs | 141,231 MCF | Apr 2010 - Jan 2025 |
| Durango Operating LLC | Mississippi | 1,318 BBLs | 298 MCF | Dec 1976 - Jun 2025 |
| Durango Operating, LLC | Alabama | 2,503 BBLs | 45 MCF | May 1952 - May 2025 |
| E2 Operating, LLC | Mississippi | 3,587 BBLs | 359 MCF | Nov 1976 - May 2025 |
| Eagle Creek Corporation | Kansas | 2,386 BBLs | 1,094 MCF | Jan 1980 - Apr 2025 |
| Eagle Operating, Inc. | North Dakota | 4,911 BBLs | 6,060 MCF | Dec 1991 - Jul 2025 |
| Earthstone Operating, LLC | New Mexico | 1,271,189 BBLs | 3,442,032 MCF | Mar 2022 - Jun 2025 |
| Ecco | Kansas | 1,443 BBLs | 0 MCF | Jan 1980 - Apr 2025 |
| Edge Energy LLC | Colorado | 30,568 BBLs | 306,735 MCF | Dec 2015 - Jun 2025 |
| Edison Operating Company LLC | Kansas | 16,426 BBLs | 252,922 MCF | Jan 1980 - Apr 2025 |
| Edmiston Oil Company, Inc. | Kansas | 2,117 BBLs | 9,344 MCF | Jan 1980 - Apr 2025 |
| Egh Operating, LLC | Louisiana | 1,847 BBLs | 0 MCF | Aug 2018 - Dec 2024 |
| Elendil Resources LLC | Kansas | 177 BBLs | 23,632 MCF | Jan 2020 - Apr 2025 |
| Elevate Energy LTD | Kansas | 3,989 BBLs | 1,134 MCF | Jan 2020 - Apr 2025 |
| Elk Energy Holdings LLC | Kansas | 1,887 BBLs | 4,884 MCF | Jan 2010 - Apr 2025 |
| Elk Operating Services, LLC | Utah | 239,037 BBLs | 845,260 MCF | Jan 2018 - Jul 2025 |
| Elm III Operating Company LLC | Kansas | 1,540 BBLs | 10,787 MCF | Jan 1980 - Apr 2025 |
| Empire New Mexico LLC | New Mexico | 36,664 BBLs | 94,934 MCF | May 2021 - Jun 2025 |
| Empire North Dakota LLC | Montana | 3,588 BBLs | 1,260 MCF | Jul 2019 - Jun 2025 |
| Empire North Dakota LLC | North Dakota | 26,349 BBLs | 7,392 MCF | Sep 2019 - Jul 2025 |
| Empresa Operating, LLC | Louisiana | 30,933 BBLs | 276,367 MCF | Sep 2019 - Dec 2024 |
| Emre Oil LLC | Wyoming | 3,143 BBLs | 0 MCF | Jul 2015 - Jun 2025 |
| Endurance Operating LLC | Louisiana | 1,790 BBLs | 7,885 MCF | Nov 2022 - Dec 2024 |
| Enduring Resources LLC | Colorado | 0 BBLs | 493,624 MCF | Nov 2017 - Jun 2025 |
| Enduring Resources, LLC | New Mexico | 327,427 BBLs | 1,431,326 MCF | Dec 2017 - Jun 2025 |
| Enerplus Resources USA Corporation | North Dakota | 1,646,469 BBLs | 3,834,376 MCF | Mar 2006 - Jun 2025 |
| Ensight IV Energy Management, LLC | Louisiana | 4,268 BBLs | 417,482 MCF | Jul 2017 - Dec 2024 |
| Enterra Resources, LLC | Kansas | 4,910 BBLs | 10,167 MCF | Jan 2010 - Apr 2025 |
| EOG Resources Inc | New Mexico | 10,552,709 BBLs | 50,362,160 MCF | Jan 1993 - Jun 2025 |
| EOG Resources Inc | Wyoming | 1,196,067 BBLs | 7,053,820 MCF | Jan 1978 - Jun 2025 |
| EOG Resources, Inc. | North Dakota | 679,569 BBLs | 1,637,072 MCF | Apr 2001 - Jun 2025 |
| Epic Energy LLC | Colorado | 0 BBLs | 26,043 MCF | Nov 2018 - Jun 2025 |
| Epic Energy, L.L.C. | New Mexico | 3,041 BBLs | 282,113 MCF | Mar 2018 - Jun 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 | 1,930,229 MCF | Dec 2018 - Jun 2025 |
| Excalibur Production Company, Inc. | Kansas | 5,106 BBLs | 0 MCF | Jan 1980 - Apr 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 | 14,889 BBLs | 158,283 MCF | Apr 2021 - Jun 2025 |
| Extraction Oil & Gas LLC | Colorado | 689,682 BBLs | 5,324,363 MCF | Jul 2013 - Jun 2025 |
| Exxon Mobil Corporation | Alabama | 472 BBLs | 1,307,461 MCF | Nov 1971 - May 2025 |
| Exxon Mobil Corporation | Wyoming | 0 BBLs | 21,266,450 MCF | Jan 1978 - Jun 2025 |
| F. G. Holl Company L.L.C. | Kansas | 8,808 BBLs | 11,481 MCF | Jan 1980 - Apr 2025 |