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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Elm Ridge Exploration Co LLC | Wyoming | 0 BBLs | 0 MCF | Nov 2010 - Oct 2011 |
| Emc Energies Inc | Wyoming | 0 BBLs | 0 MCF | Jun 1988 - May 1989 |
| Emc Energy | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Jun 1985 |
| Emc Inc | Wyoming | 0 BBLs | 0 MCF | Apr 1982 - Feb 1986 |
| Emcor Petroleum Inc | Wyoming | 0 BBLs | 0 MCF | Feb 1984 - Sep 1985 |
| Eme Wyoming LLC | Wyoming | 0 BBLs | 0 MCF | Apr 2022 - Oct 2024 |
| Emerald Operating Company | Wyoming | 0 BBLs | 2,867 MCF | Feb 1993 - Oct 2024 |
| Emerald Restoration & Prod | Wyoming | 0 BBLs | 0 MCF | Jan 1994 - Jul 2000 |
| Emmett Energy Corporation Inc | Wyoming | 0 BBLs | 0 MCF | Sep 1987 - Aug 2002 |
| Empire Petroleum Corporation | Wyoming | 0 BBLs | 0 MCF | Feb 2001 - Dec 2005 |
| Emre Oil LLC | Wyoming | 3,930 BBLs | 0 MCF | Jul 2015 - Sep 2024 |
| Encana Energy Resources Inc | Wyoming | 0 BBLs | 0 MCF | Feb 1984 - Dec 2004 |
| Encore Operating LP | Wyoming | 0 BBLs | 0 MCF | Jul 2005 - Dec 2010 |
| Endeavor Energy LLC | Wyoming | 0 BBLs | 0 MCF | Apr 2000 - Sep 2023 |
| Endeavor Energy Resources LP | Wyoming | 0 BBLs | 0 MCF | Apr 2003 - Oct 2010 |
| Enduro Operating LLC | Wyoming | 0 BBLs | 0 MCF | Mar 2012 - Jul 2018 |
| Enerex Limited Liability Co | Wyoming | 0 BBLs | 0 MCF | Jun 1992 - Jun 2024 |
| Energas Corporation | Wyoming | 0 BBLs | 0 MCF | Feb 1996 - Aug 2011 |
| Energen Resources Maq Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1987 - Aug 1992 |
| Energetics Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Aug 1985 |
| Energy Equity Company | Wyoming | 52 BBLs | 192 MCF | Jul 1995 - Sep 2024 |
| Energy Minerals Corporation | Wyoming | 0 BBLs | 0 MCF | Nov 1987 - Aug 1992 |
| Energy Operating Company Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1989 - Dec 2012 |
| Energy Production Co | Wyoming | 0 BBLs | 0 MCF | Aug 1981 - Jul 1989 |
| Energy Reserves Group | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Apr 1986 |
| Energy Resources Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Dec 1979 |
| Energy Search Company Inc | Wyoming | 0 BBLs | 0 MCF | Nov 1989 - May 2015 |
| Energy Specialists | Wyoming | 0 BBLs | 0 MCF | Jan 1987 - Dec 1990 |
| Enervest Operating LLC | Wyoming | 0 BBLs | 0 MCF | Jan 1984 - Feb 2003 |
| Enpro LLC | Wyoming | 0 BBLs | 0 MCF | Jan 2010 - Nov 2017 |
| Enre LP | Wyoming | 0 BBLs | 0 MCF | Nov 2000 - Dec 2003 |
| Ensource Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1985 - Apr 1987 |
| Enstar Petroleum Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Apr 1985 |
| Entek GRB LLC | Wyoming | 0 BBLs | 0 MCF | Dec 2011 - Sep 2018 |
| Envirosearch Corporation | Wyoming | 0 BBLs | 0 MCF | Jan 1979 - Dec 1992 |
| EOG Resources Inc | Wyoming | 1,187,173 BBLs | 7,246,065 MCF | Jan 1978 - Oct 2024 |
| EOG Y Resources Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Dec 2018 |
| EP Energy E & P Company L P | Wyoming | 0 BBLs | 0 MCF | May 2006 - Sep 2011 |
| Epoch Southwest LLC | Wyoming | 0 BBLs | 0 MCF | Apr 2012 - Feb 2013 |
| Equality State Bank | Wyoming | 0 BBLs | 0 MCF | Jan 1996 - Dec 1997 |
| Equitable Resources Energy Company | Wyoming | 0 BBLs | 0 MCF | Jan 1987 - Dec 1997 |
| Equity Oil Company | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Jul 2004 |
| Erg Resources LLC | Wyoming | 0 BBLs | 0 MCF | Nov 2001 - Oct 2010 |
| Escalera Resources Co | Wyoming | 0 BBLs | 0 MCF | May 1981 - May 2018 |
| Essex Energy Inc | Wyoming | 0 BBLs | 0 MCF | Nov 1997 - Jan 2004 |
| Euroamerican Energy Group Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1987 - Oct 1993 |
| Everest Oil & Gas LLC | Wyoming | 761 BBLs | 0 MCF | May 2010 - Sep 2024 |
| Evergreen Operating Company | Wyoming | 0 BBLs | 0 MCF | Jan 1983 - Apr 1996 |
| Evertson Bruce F | Wyoming | 0 BBLs | 0 MCF | Mar 1988 - Dec 1999 |
| Evertson Operating Company Inc | Wyoming | 0 BBLs | 0 MCF | Jan 2000 - Nov 2022 |