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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Double Eagle Exploration, Inc. | Kansas | 2,075 BBLs | 0 MCF | Jan 1980 - Apr 2026 |
| Double G Petro LLC | Kansas | 2,181 BBLs | 0 MCF | Feb 2020 - Apr 2026 |
| Downing-Nelson Oil Co Inc | Kansas | 23,020 BBLs | 366 MCF | Jan 1980 - Apr 2026 |
| Dugan Production Corp | New Mexico | 1,895 BBLs | 290,505 MCF | Jan 1993 - Jun 2026 |
| Dunn Exploration Company, LLC | Louisiana | 68,232 BBLs | 141,231 MCF | Apr 2010 - Jan 2025 |
| Durango Operating LLC | Mississippi | 1,827 BBLs | 303 MCF | Dec 1976 - Jun 2026 |
| Durango Operating, LLC | Alabama | 1,976 BBLs | 31 MCF | May 1952 - Jun 2026 |
| E2 Operating, LLC | Mississippi | 2,732 BBLs | 273 MCF | Nov 1976 - Jun 2026 |
| Eagle Creek Corporation | Kansas | 2,292 BBLs | 1,175 MCF | Jan 1980 - Apr 2026 |
| Eagle Operating, Inc. | North Dakota | 3,699 BBLs | 5,448 MCF | Dec 1991 - Jun 2026 |
| Earthstone Operating, LLC | New Mexico | 678,080 BBLs | 2,318,120 MCF | Mar 2022 - Jun 2026 |
| Edison Operating Company LLC | Kansas | 15,486 BBLs | 228,807 MCF | Jan 1980 - Apr 2026 |
| Edmiston Oil Company, Inc. | Kansas | 1,924 BBLs | 12,159 MCF | Jan 1980 - Apr 2026 |
| Egh Operating, LLC | Louisiana | 1,847 BBLs | 0 MCF | Aug 2018 - Dec 2024 |
| Eiger Operating Company, LLC | Kansas | 2,860 BBLs | 19,241 MCF | Jan 2020 - Apr 2026 |
| Elendil Resources LLC | Kansas | 964 BBLs | 26,137 MCF | Jan 2020 - Apr 2026 |
| Elevate Energy LTD | Kansas | 6,253 BBLs | 1,350 MCF | Jan 2020 - Apr 2026 |
| Elite Group LLC | Mississippi | 1,797 BBLs | 0 MCF | Dec 1976 - Jul 2026 |
| Elk Energy Holdings LLC | Kansas | 1,532 BBLs | 5,132 MCF | Jan 2010 - Apr 2026 |
| Elk Operating Services, LLC | Utah | 240,353 BBLs | 783,453 MCF | Jan 2018 - Jul 2026 |
| Elm III Operating Company LLC | Kansas | 882 BBLs | 11,770 MCF | Jan 1980 - Apr 2026 |
| Emep II Operating LLC | Wyoming | 55,065 BBLs | 246,830 MCF | Aug 2025 - Jun 2026 |
| Empire North Dakota LLC | Montana | 2,356 BBLs | 0 MCF | Jul 2019 - Jun 2026 |
| Empire North Dakota LLC | North Dakota | 21,325 BBLs | 1,741 MCF | Sep 2019 - Jun 2026 |
| Empresa Operating, LLC | Louisiana | 30,933 BBLs | 276,367 MCF | Sep 2019 - Dec 2024 |
| Emre Oil LLC | Wyoming | 3,337 BBLs | 0 MCF | Jul 2015 - Jun 2026 |
| Endurance Operating LLC | Louisiana | 1,790 BBLs | 7,885 MCF | Nov 2022 - Dec 2024 |
| Enduring Resources LLC | Colorado | 0 BBLs | 274,874 MCF | Jan 1999 - May 2026 |
| Enduring Resources, LLC | New Mexico | 404,180 BBLs | 1,672,591 MCF | Dec 2017 - Jun 2026 |
| Enerplus Resources USA Corporation | North Dakota | 1,966,247 BBLs | 4,276,718 MCF | Mar 2006 - Jun 2026 |
| Ensight IV Energy Management, LLC | Louisiana | 4,268 BBLs | 417,482 MCF | Jul 2017 - Dec 2024 |
| Enterra Resources, LLC | Kansas | 4,135 BBLs | 8,236 MCF | Jan 2010 - Apr 2026 |
| EOG Resources Inc | New Mexico | 9,939,118 BBLs | 57,384,068 MCF | Jan 1993 - Jun 2026 |
| EOG Resources Inc | Wyoming | 1,046,435 BBLs | 6,685,104 MCF | Jan 1978 - Jun 2026 |
| EOG Resources, Inc. | North Dakota | 937,982 BBLs | 1,970,485 MCF | Apr 2001 - Jun 2026 |
| Epic Energy, L.L.C. | New Mexico | 2,248 BBLs | 159,708 MCF | Mar 2018 - Jun 2026 |
| Eqv Operating, LLC | Mississippi | 14,429 BBLs | 9,705 MCF | Jan 2025 - May 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 | 1,255 BBLs | 1,766 MCF | Jan 2010 - Apr 2026 |
| Evergreen Natural Resources LLC | Colorado | 0 BBLs | 1,838,730 MCF | Jan 1999 - May 2026 |
| Ew Operating (NM), LLC | New Mexico | 4,199 BBLs | 11,894 MCF | Jul 2025 - Jun 2026 |
| Excalibur Production Company, Inc. | Kansas | 5,448 BBLs | 0 MCF | Jan 1980 - Apr 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 | 13,947 BBLs | 121,539 MCF | Apr 2021 - Jul 2026 |
| Extraction Oil & Gas LLC | Colorado | 574,931 BBLs | 5,206,106 MCF | Jan 1999 - May 2026 |
| Exxon Mobil Corporation | Alabama | 295 BBLs | 1,266,848 MCF | Nov 1971 - Jun 2026 |
| Exxon Mobil Corporation | Wyoming | 0 BBLs | 20,360,050 MCF | Jan 1978 - Jun 2026 |