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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Elliott Inc | Utah | 0 BBLs | 0 MCF | May 1960 - Apr 1962 |
| Elm Ridge Exploration Company | Utah | 0 BBLs | 0 MCF | Dec 2005 - Jan 2019 |
| Elm Ridge Resources Inc | Utah | 0 BBLs | 0 MCF | Dec 2000 - Nov 2005 |
| Emerald Oil And Mining Co | Utah | 0 BBLs | 0 MCF | Mar 1987 - Aug 1996 |
| Emery Resource Holdings LLC | Utah | 0 BBLs | 0 MCF | Jan 2012 - Mar 2024 |
| Encana Oil & Gas (USA), Inc | Utah | 0 BBLs | 0 MCF | Apr 2002 - Mar 2017 |
| Encore Energy LLC | Utah | 0 BBLs | 0 MCF | Apr 2002 - Sep 2011 |
| Enduring Energy, LLC | Utah | 0 BBLs | 0 MCF | Apr 2021 - Mar 2022 |
| Enduring Resources, LLC | Utah | 0 BBLs | 0 MCF | Sep 2005 - Feb 2017 |
| Energetics Inc | Utah | 0 BBLs | 0 MCF | Nov 1974 - Dec 1983 |
| Energetics Operating Co | Utah | 0 BBLs | 0 MCF | Apr 1983 - Aug 1985 |
| Energy Reserves Group | Utah | 0 BBLs | 0 MCF | Feb 1976 - Dec 1983 |
| Enerplus Resources (USA) Corp | Utah | 0 BBLs | 0 MCF | Mar 2009 - Feb 2012 |
| Enerquest Operating, LLC | Utah | 537 BBLs | 7,856 MCF | Oct 2012 - Feb 2024 |
| Enervest Operating, LLC | Utah | 0 BBLs | 0 MCF | Jan 2014 - Oct 2020 |
| Enogex Exploration Corp | Utah | 0 BBLs | 0 MCF | Nov 1960 - Jun 2000 |
| Enron Oil & Gas Co | Utah | 0 BBLs | 0 MCF | Jan 1981 - Dec 1999 |
| Enserch Exploration Inc | Utah | 0 BBLs | 0 MCF | May 1978 - Jul 1997 |
| Enserch Exploration Inc | Utah | 0 BBLs | 0 MCF | May 1982 - Dec 1983 |
| Enstar Corporation | Utah | 0 BBLs | 0 MCF | Jan 1984 - Apr 1988 |
| Entrada Oil & Gas | Utah | 0 BBLs | 0 MCF | Oct 1957 - Dec 1961 |
| EOG Resources, Inc | Utah | 0 BBLs | 0 MCF | Jan 2000 - Mar 2022 |
| EP Energy E&P Company, LP | Utah | 0 BBLs | 0 MCF | Jun 2012 - May 2022 |
| EP Operating Company LP | Utah | 0 BBLs | 0 MCF | Jan 1984 - Mar 1993 |
| Epic Resources Inc | Utah | 0 BBLs | 0 MCF | Jan 1967 - Sep 1988 |
| Eps Resources Corp | Utah | 0 BBLs | 0 MCF | Mar 1989 - Jun 1992 |
| Equitable Resources Energy | Utah | 0 BBLs | 0 MCF | Nov 1991 - Sep 1997 |
| Equity Oil Company | Utah | 0 BBLs | 0 MCF | Aug 1952 - Aug 2004 |
| Erg Operating Company Inc | Utah | 0 BBLs | 0 MCF | Mar 2005 - Jun 2005 |
| Erhc/Bass American Petro | Utah | 0 BBLs | 0 MCF | Dec 1997 - Jul 1999 |
| Evergreen Energy, Inc | Utah | 0 BBLs | 0 MCF | Dec 2013 - Feb 2024 |
| Evergreen Operating Corp | Utah | 0 BBLs | 0 MCF | Dec 2003 - Sep 2004 |
| Evertson Oil Company Inc | Utah | 0 BBLs | 0 MCF | Oct 1992 - May 1994 |
| Exit Inc | Utah | 0 BBLs | 0 MCF | Jun 1981 - Dec 1983 |
| Exxon Corporation | Utah | 0 BBLs | 0 MCF | Nov 1952 - Jan 1997 |
| Exxonmobil Oil Corp | Utah | 0 BBLs | 0 MCF | Jun 2001 - May 2006 |
| F & M Oil Company Inc | Utah | 0 BBLs | 0 MCF | Jan 1984 - Jan 1988 |
| F L Energy | Utah | 0 BBLs | 0 MCF | Aug 1964 - Feb 2007 |
| Falcon Creek Resources | Utah | 0 BBLs | 0 MCF | Jan 2000 - Jun 2000 |
| Falcon Energy LLC | Utah | 0 BBLs | 0 MCF | Dec 1983 - Sep 2011 |
| Fellows Energy LTD | Utah | 0 BBLs | 0 MCF | May 2005 - Sep 2007 |
| Fidelity E&P Company | Utah | 0 BBLs | 0 MCF | Nov 2007 - Feb 2016 |
| Fiml Natural Resources LLC (FNR) | Utah | 0 BBLs | 0 MCF | Oct 2003 - Jul 2014 |
| Fina Oil & Chemical Co | Utah | 0 BBLs | 0 MCF | Jan 1985 - Oct 1989 |
| Finley Resources, Inc | Utah | 0 BBLs | 0 MCF | Apr 2008 - Jan 2024 |
| First Energy Corporation | Utah | 0 BBLs | 0 MCF | Jan 1982 - Dec 1983 |
| First Zone Production | Utah | 0 BBLs | 0 MCF | Mar 1988 - Dec 1997 |
| Flare Energy Corporation | Utah | 0 BBLs | 0 MCF | Apr 1982 - Mar 1984 |
| Flatirons Resources, LLC | Utah | 0 BBLs | 0 MCF | Aug 2013 - Feb 2019 |
| Florida Exploration Co | Utah | 0 BBLs | 0 MCF | May 1982 - Feb 1985 |