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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Downing-Nelson Oil Co Inc | Kansas | 21,093 BBLs | 0 MCF | Jan 1980 - Mar 2024 |
| Dugan Production Corp | New Mexico | 6,779 BBLs | 630,056 MCF | Jan 1993 - Apr 2024 |
| Dunn Exploration Company, LLC | Louisiana | 54,318 BBLs | 30,557 MCF | Apr 2010 - Jan 2024 |
| Durango Operating, LLC | Alabama | 1,721 BBLs | 0 MCF | May 1952 - Feb 2024 |
| Dynamic Exploration PTRS, LLC | Louisiana | 2,614 BBLs | 183 MCF | Nov 2003 - Jan 2024 |
| E & B Natural Resources Management | Wyoming | 20,318 BBLs | 14 MCF | Feb 2011 - Apr 2024 |
| E & B Natural Resources Management Corp. | Kansas | 6,920 BBLs | 0 MCF | Jan 1980 - Mar 2024 |
| E2 Operating, LLC | Mississippi | 5,276 BBLs | 529 MCF | Nov 1976 - Apr 2024 |
| Eagle Creek Corporation | Kansas | 2,915 BBLs | 778 MCF | Jan 1980 - Mar 2024 |
| Eagle Operating Inc. | Montana | 11,636 BBLs | 7,685 MCF | Nov 2023 - Apr 2024 |
| Eagle Operating, Inc. | North Dakota | 14,372 BBLs | 6,630 MCF | Dec 1991 - May 2024 |
| Earthstone Operating, LLC | New Mexico | 1,401,589 BBLs | 3,028,552 MCF | Mar 2022 - May 2024 |
| Ecco | Kansas | 1,767 BBLs | 0 MCF | Jan 1980 - Mar 2024 |
| Edge Energy LLC | Colorado | 69,700 BBLs | 413,114 MCF | Dec 2015 - Apr 2024 |
| Edison Operating Company LLC | Kansas | 14,763 BBLs | 239,695 MCF | Jan 1980 - Mar 2024 |
| Edmiston Oil Company, Inc. | Kansas | 1,959 BBLs | 13,695 MCF | Jan 1980 - Mar 2024 |
| Elevate Energy LTD | Kansas | 3,826 BBLs | 939 MCF | Jan 2020 - Mar 2024 |
| Elk Energy Holdings LLC | Kansas | 1,594 BBLs | 4,380 MCF | Jan 2010 - Mar 2024 |
| Elk Operating Services, LLC | Utah | 238,075 BBLs | 691,575 MCF | Jan 2018 - May 2024 |
| Elm III Operating Company LLC | Kansas | 1,827 BBLs | 10,954 MCF | Jan 1980 - Mar 2024 |
| Elysium Jennings, LLC | Louisiana | 10,628 BBLs | 61,500 MCF | Jun 2003 - Dec 2023 |
| Emep Operating, LLC | Montana | 105,206 BBLs | 169,514 MCF | Jan 2022 - Apr 2024 |
| Emep Operating, LLC | North Dakota | 19,059 BBLs | 20,886 MCF | Jun 2022 - May 2024 |
| Empire New Mexico LLC | New Mexico | 19,248 BBLs | 98,368 MCF | May 2021 - May 2024 |
| Empire North Dakota LLC | North Dakota | 20,209 BBLs | 288 MCF | Sep 2019 - May 2024 |
| Empresa Operating, LLC | Louisiana | 51,451 BBLs | 428,863 MCF | Aug 2019 - Dec 2023 |
| Emre Oil LLC | Wyoming | 4,244 BBLs | 0 MCF | Jul 2015 - May 2024 |
| Endurance Operating LLC | Louisiana | 4,549 BBLs | 8,221 MCF | Nov 2022 - Dec 2023 |
| Enduring Resources LLC | Colorado | 0 BBLs | 602,797 MCF | Nov 2017 - Apr 2024 |
| Enduring Resources, LLC | New Mexico | 292,866 BBLs | 1,379,684 MCF | Dec 2017 - May 2024 |
| Enerco Operating Corporation | Arkansas | 7,826 BBLs | 0 MCF | Jan 2001 - May 2024 |
| Energy Xxi Gom, LLC | Louisiana | 6,911 BBLs | 0 MCF | Jul 2006 - Dec 2023 |
| Enerplus Resources (USA) Corporation | Colorado | 15,449 BBLs | 28,280 MCF | Dec 2009 - May 2024 |
| Enerplus Resources USA Corporation | North Dakota | 1,385,687 BBLs | 3,379,719 MCF | Mar 2006 - May 2024 |
| Enervest Production Partners, LTD. | Louisiana | 0 BBLs | 94,000 MCF | Sep 2019 - Dec 2023 |
| Eni Us Operating Co. Inc. | Alaska | 614,705 BBLs | 169,933 MCF | Jan 2011 - May 2024 |
| Ensight IV Energy Management, LLC | Louisiana | 4,878 BBLs | 3,711,854 MCF | Jul 2017 - Jan 2024 |
| Enterra Resources, LLC | Kansas | 5,652 BBLs | 9,521 MCF | Jan 2010 - Mar 2024 |
| EOG Resources Inc | New Mexico | 10,289,706 BBLs | 42,702,952 MCF | Jan 1993 - May 2024 |
| EOG Resources Inc | Wyoming | 1,406,028 BBLs | 7,913,550 MCF | Jan 1978 - May 2024 |
| EOG Resources, Inc. | North Dakota | 512,041 BBLs | 1,666,798 MCF | Apr 2001 - May 2024 |
| Epic Energy, L.L.C. | New Mexico | 4,111 BBLs | 314,939 MCF | Mar 2018 - Apr 2024 |
| Escambia Operating Co. LLC | Alabama | 16,987 BBLs | 379,383 MCF | Jul 1970 - Feb 2024 |
| Et Gathering & Processing LLC | Louisiana | 8,087 BBLs | 0 MCF | Oct 2023 - Dec 2023 |
| Ethyl Gas Company, LLC | Louisiana | 1,584 BBLs | 0 MCF | Nov 2021 - Jan 2024 |
| Evangeline Natural Resources, LLC | Louisiana | 2,799 BBLs | 19,239 MCF | Aug 2013 - Dec 2023 |
| Evergreen Natural Resources LLC | Colorado | 0 BBLs | 2,263,318 MCF | Dec 2018 - May 2024 |
| Excalibur Production Company, Inc. | Kansas | 4,644 BBLs | 0 MCF | Jan 1980 - Mar 2024 |
| Exco Operating Company, LP | Louisiana | 0 BBLs | 13,166,818 MCF | Jul 2008 - Dec 2023 |
| Extex Operating Co | Louisiana | 3,352 BBLs | 11,189 MCF | Dec 1999 - Jan 2024 |