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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| DNR Oil And Gas, Inc. | Kansas | 1,150 BBLs | 0 MCF | Jan 1980 - Jan 2026 |
| Dorcheat Oil & Gas, LLC | Louisiana | 245 BBLs | 35,651 MCF | Mar 2016 - Dec 2024 |
| Double Eagle Exploration, Inc. | Kansas | 1,279 BBLs | 0 MCF | Jan 1980 - Jan 2026 |
| Double G Petro LLC | Kansas | 2,357 BBLs | 0 MCF | Feb 2020 - Jan 2026 |
| Downing-Nelson Oil Co Inc | Kansas | 21,859 BBLs | 630 MCF | Jan 1980 - Jan 2026 |
| Dugan Production Corp | New Mexico | 3,124 BBLs | 524,131 MCF | Jan 1993 - Mar 2026 |
| Dunamis Energy Operating LLC | Colorado | 294,010 BBLs | 1,234,725 MCF | Sep 2011 - Feb 2026 |
| Dunn Exploration Company, LLC | Louisiana | 68,232 BBLs | 141,231 MCF | Apr 2010 - Jan 2025 |
| Durango Operating, LLC | Alabama | 2,042 BBLs | 27 MCF | May 1952 - Mar 2026 |
| E&E Oil LLC | Kansas | 1,169 BBLs | 0 MCF | Jan 2020 - Jan 2026 |
| E2 Operating, LLC | Mississippi | 2,659 BBLs | 265 MCF | Nov 1976 - Feb 2026 |
| Eagle Creek Corporation | Kansas | 2,567 BBLs | 578 MCF | Jan 1980 - Jan 2026 |
| Eagle Operating, Inc. | North Dakota | 4,501 BBLs | 3,262 MCF | Dec 1991 - Apr 2026 |
| Earthstone Operating, LLC | New Mexico | 862,209 BBLs | 2,838,199 MCF | Mar 2022 - Mar 2026 |
| Ecco | Kansas | 1,618 BBLs | 0 MCF | Jan 1980 - Jan 2026 |
| Edge Energy LLC | Colorado | 19,885 BBLs | 219,586 MCF | Aug 2018 - Feb 2026 |
| Edison Operating Company LLC | Kansas | 14,047 BBLs | 225,440 MCF | Jan 1980 - Jan 2026 |
| Edmiston Oil Company, Inc. | Kansas | 1,635 BBLs | 8,680 MCF | Jan 1980 - Jan 2026 |
| Egh Operating, LLC | Louisiana | 1,847 BBLs | 0 MCF | Aug 2018 - Dec 2024 |
| Elevate Energy LTD | Kansas | 6,301 BBLs | 1,367 MCF | Jan 2020 - Jan 2026 |
| Elk Energy Holdings LLC | Kansas | 1,910 BBLs | 4,350 MCF | Jan 2010 - Jan 2026 |
| Elk Operating Services, LLC | Utah | 254,180 BBLs | 1,026,986 MCF | Jan 2018 - Apr 2026 |
| Ellbogen John P LTD | Wyoming | 1,077 BBLs | 0 MCF | Jan 1978 - Mar 2026 |
| Elm III Operating Company LLC | Kansas | 1,395 BBLs | 10,583 MCF | Jan 1980 - Jan 2026 |
| Emep II Operating LLC | Wyoming | 73,244 BBLs | 258,739 MCF | Aug 2025 - Apr 2026 |
| Empire New Mexico LLC | New Mexico | 31,115 BBLs | 77,431 MCF | May 2021 - Mar 2026 |
| Empire North Dakota LLC | Montana | 1,290 BBLs | 329 MCF | Jul 2019 - Mar 2026 |
| Empire North Dakota LLC | North Dakota | 17,337 BBLs | 0 MCF | Sep 2019 - Mar 2026 |
| Empresa Operating, LLC | Louisiana | 30,933 BBLs | 276,367 MCF | Sep 2019 - Dec 2024 |
| Emre Oil LLC | Wyoming | 2,621 BBLs | 0 MCF | Jul 2015 - Mar 2026 |
| Endurance Operating LLC | Louisiana | 1,790 BBLs | 7,885 MCF | Nov 2022 - Dec 2024 |
| Enduring Resources LLC | Colorado | 0 BBLs | 1,112,730 MCF | Jan 1999 - Feb 2026 |
| Enduring Resources, LLC | New Mexico | 479,337 BBLs | 1,780,385 MCF | Dec 2017 - Apr 2026 |
| Enerplus Resources USA Corporation | North Dakota | 1,936,895 BBLs | 4,299,476 MCF | Mar 2006 - Mar 2026 |
| Ensight IV Energy Management, LLC | Louisiana | 4,268 BBLs | 417,482 MCF | Jul 2017 - Dec 2024 |
| Enterra Resources, LLC | Kansas | 4,938 BBLs | 9,005 MCF | Jan 2010 - Jan 2026 |
| EOG Resources Inc | New Mexico | 10,221,635 BBLs | 57,211,877 MCF | Jan 1993 - Mar 2026 |
| EOG Resources Inc | Wyoming | 997,601 BBLs | 6,669,859 MCF | Jan 1978 - Mar 2026 |
| EOG Resources, Inc. | North Dakota | 845,708 BBLs | 1,791,129 MCF | Apr 2001 - Mar 2026 |
| Epic Energy, L.L.C. | New Mexico | 3,116 BBLs | 280,577 MCF | Mar 2018 - Mar 2026 |
| 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 |
| Everglow Energy, LLC | Kansas | 1,093 BBLs | 1,469 MCF | Jan 2010 - Jan 2026 |
| Evergreen Natural Resources LLC | Colorado | 0 BBLs | 1,670,872 MCF | Jan 1999 - Mar 2026 |
| Ew Operating (NM), LLC | New Mexico | 4,125 BBLs | 10,681 MCF | Jul 2025 - Mar 2026 |
| Excalibur Production Company, Inc. | Kansas | 5,828 BBLs | 0 MCF | Jan 1980 - Jan 2026 |
| 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 | 15,515 BBLs | 47,486 MCF | Apr 2021 - Apr 2026 |