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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Dunn Exploration Company, LLC | Louisiana | 68,232 BBLs | 141,231 MCF | Apr 2010 - Jan 2025 |
| Durango Operating, LLC | Alabama | 2,304 BBLs | 30 MCF | May 1952 - Dec 2025 |
| Eagle Creek Corporation | Kansas | 2,538 BBLs | 670 MCF | Jan 1980 - Sep 2025 |
| Eagle Operating, Inc. | North Dakota | 4,647 BBLs | 5,062 MCF | Dec 1991 - Jan 2026 |
| Earthstone Operating, LLC | New Mexico | 744,887 BBLs | 2,536,164 MCF | Mar 2022 - Jan 2026 |
| Edge Energy LLC | Colorado | 26,795 BBLs | 276,496 MCF | Aug 2018 - Dec 2025 |
| Edison Operating Company LLC | Kansas | 14,753 BBLs | 232,816 MCF | Jan 1980 - Sep 2025 |
| Edmiston Oil Company, Inc. | Kansas | 1,788 BBLs | 9,693 MCF | Jan 1980 - Sep 2025 |
| Egh Operating, LLC | Louisiana | 1,847 BBLs | 0 MCF | Aug 2018 - Dec 2024 |
| Elendil Resources LLC | Kansas | 0 BBLs | 23,139 MCF | Jan 2020 - Sep 2025 |
| Elevate Energy LTD | Kansas | 5,398 BBLs | 734 MCF | Jan 2020 - Sep 2025 |
| Elk Energy Holdings LLC | Kansas | 1,152 BBLs | 10,519 MCF | Jan 2010 - Sep 2025 |
| Elk Operating Services, LLC | Utah | 250,980 BBLs | 922,794 MCF | Jan 2018 - Jan 2026 |
| Elm III Operating Company LLC | Kansas | 1,283 BBLs | 17,069 MCF | Jan 1980 - Sep 2025 |
| Empire New Mexico LLC | New Mexico | 24,109 BBLs | 84,371 MCF | May 2021 - Jan 2026 |
| Empire North Dakota LLC | Montana | 4,396 BBLs | 1,540 MCF | Jul 2019 - Jan 2026 |
| Empire North Dakota LLC | North Dakota | 22,287 BBLs | 6,078 MCF | Sep 2019 - Jan 2026 |
| Empresa Operating, LLC | Louisiana | 30,933 BBLs | 276,367 MCF | Sep 2019 - Dec 2024 |
| Endurance Operating LLC | Louisiana | 1,790 BBLs | 7,885 MCF | Nov 2022 - Dec 2024 |
| Enduring Resources LLC | Colorado | 0 BBLs | 1,303,183 MCF | Jan 1999 - Dec 2025 |
| Enduring Resources, LLC | New Mexico | 540,620 BBLs | 1,808,185 MCF | Dec 2017 - Jan 2026 |
| Enerplus Resources USA Corporation | North Dakota | 1,751,583 BBLs | 3,739,756 MCF | Mar 2006 - Jan 2026 |
| Ensight IV Energy Management, LLC | Louisiana | 4,268 BBLs | 417,482 MCF | Jul 2017 - Dec 2024 |
| Enterra Resources, LLC | Kansas | 4,397 BBLs | 11,054 MCF | Jan 2010 - Sep 2025 |
| EOG Resources Inc | New Mexico | 9,784,210 BBLs | 54,438,492 MCF | Jan 1993 - Jan 2026 |
| EOG Resources, Inc. | North Dakota | 883,033 BBLs | 1,821,074 MCF | Apr 2001 - Jan 2026 |
| Epic Energy LLC | Colorado | 0 BBLs | 24,427 MCF | Jan 1999 - Dec 2025 |
| Epic Energy, L.L.C. | New Mexico | 2,836 BBLs | 273,436 MCF | Mar 2018 - Jan 2026 |
| Eqv Operating, LLC | Mississippi | 7,152 BBLs | 4,153 MCF | Jan 2025 - Jan 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 |
| Evergreen Natural Resources LLC | Colorado | 0 BBLs | 1,929,160 MCF | Jan 1999 - Jan 2026 |
| Ew Operating (NM), LLC | New Mexico | 4,266 BBLs | 8,877 MCF | Jul 2025 - Jan 2026 |
| Excalibur Production Company, Inc. | Kansas | 4,749 BBLs | 0 MCF | Jan 1980 - Sep 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 | 14,009 BBLs | 77,016 MCF | Apr 2021 - Jan 2026 |
| Extraction Oil & Gas LLC | Colorado | 638,767 BBLs | 5,295,515 MCF | Jan 1999 - Dec 2025 |
| Exxon Mobil Corporation | Alabama | 304 BBLs | 1,441,116 MCF | Nov 1971 - Dec 2025 |
| F. G. Holl Company L.L.C. | Kansas | 8,701 BBLs | 11,937 MCF | Jan 1980 - Sep 2025 |
| Fae II Operating LLC | New Mexico | 16,769 BBLs | 98,197 MCF | Dec 2019 - Jan 2026 |
| Fairways Exploration & Production, LLC | Alabama | 1,160 BBLs | 396 MCF | Oct 2010 - Dec 2025 |
| Faith Energy, L.L.C. | Louisiana | 1,209 BBLs | 0 MCF | Jul 2000 - Jan 2025 |
| Falcon Exploration, Inc. | Kansas | 7,703 BBLs | 33,116 MCF | Jan 1980 - Sep 2025 |
| Farmer, John O., Inc. | Kansas | 27,613 BBLs | 5,775 MCF | Jan 1980 - Sep 2025 |
| Fasken Oil & Ranch LTD | New Mexico | 8,286 BBLs | 10,625 MCF | Jan 1996 - Jan 2026 |
| Federated Oil And Gas Properties Inc | Michigan | 6,954 BBLs | 2,101 MCF | Jan 1982 - Aug 2025 |
| Finley Resources Inc | Wyoming | 3,417 BBLs | 0 MCF | Jul 2001 - Feb 2026 |