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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Double Eagle Exploration, Inc. | Kansas | 1,272 BBLs | 0 MCF | Jan 1980 - May 2025 |
| Double G Petro LLC | Kansas | 1,453 BBLs | 0 MCF | Jan 2024 - May 2025 |
| Downing-Nelson Oil Co Inc | Kansas | 19,433 BBLs | 7 MCF | Jan 1980 - May 2025 |
| Dugan Production Corp | New Mexico | 3,744 BBLs | 597,815 MCF | Jan 1993 - Jul 2025 |
| Dunamis Energy Operating LLC | Colorado | 57,400 BBLs | 61,290 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 | 1,787 BBLs | 0 MCF | May 1952 - Jun 2025 |
| E2 Operating, LLC | Mississippi | 3,080 BBLs | 309 MCF | Nov 1976 - Jun 2025 |
| Eagle Creek Corporation | Kansas | 3,387 BBLs | 1,025 MCF | Jan 1980 - May 2025 |
| Eagle Operating, Inc. | North Dakota | 5,360 BBLs | 6,062 MCF | Dec 1991 - Jul 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 | 16,728 BBLs | 246,990 MCF | Jan 1980 - May 2025 |
| Edmiston Oil Company, Inc. | Kansas | 1,687 BBLs | 9,591 MCF | Jan 1980 - May 2025 |
| Egh Operating, LLC | Louisiana | 1,847 BBLs | 0 MCF | Aug 2018 - Dec 2024 |
| Elevate Energy LTD | Kansas | 3,865 BBLs | 1,116 MCF | Jan 2020 - May 2025 |
| Elite Group LLC | Mississippi | 1,264 BBLs | 0 MCF | Dec 1976 - Jun 2025 |
| Elk Energy Holdings LLC | Kansas | 2,071 BBLs | 5,362 MCF | Jan 2010 - May 2025 |
| Elk Operating Services, LLC | Utah | 234,840 BBLs | 873,865 MCF | Jan 2018 - Jul 2025 |
| Elm III Operating Company LLC | Kansas | 2,311 BBLs | 10,507 MCF | Jan 1980 - May 2025 |
| Empire New Mexico LLC | New Mexico | 37,993 BBLs | 101,873 MCF | May 2021 - Jul 2025 |
| Empire North Dakota LLC | North Dakota | 24,726 BBLs | 7,116 MCF | Sep 2019 - Jul 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 | 1,439,105 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 | 1,810,197 BBLs | 4,265,372 MCF | Mar 2006 - Jul 2025 |
| Ensight IV Energy Management, LLC | Louisiana | 4,268 BBLs | 417,482 MCF | Jul 2017 - Dec 2024 |
| Enterra Resources, LLC | Kansas | 5,044 BBLs | 10,281 MCF | Jan 2010 - May 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 | 7,126,028 MCF | Jan 1978 - Jul 2025 |
| EOG Resources, Inc. | North Dakota | 664,154 BBLs | 1,684,128 MCF | Apr 2001 - Jul 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 | 1,987,468 MCF | Dec 2018 - Jul 2025 |
| Ew Operating (NM), LLC | New Mexico | 4,425 BBLs | 7,504 MCF | Jul 2025 - Jul 2025 |
| Excalibur Production Company, Inc. | Kansas | 5,120 BBLs | 0 MCF | Jan 1980 - May 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 | 162,561 MCF | Apr 2021 - Jul 2025 |
| Extraction Oil & Gas LLC | Colorado | 783,834 BBLs | 6,297,476 MCF | Jul 2013 - Jul 2025 |
| Exxon Mobil Corporation | Alabama | 10 BBLs | 1,525,836 MCF | Nov 1971 - Jun 2025 |
| Exxon Mobil Corporation | Wyoming | 0 BBLs | 21,940,426 MCF | Jan 1978 - Jul 2025 |
| F. G. Holl Company L.L.C. | Kansas | 9,473 BBLs | 11,388 MCF | Jan 1980 - May 2025 |