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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Geodyne Operating Company | Wyoming | 0 BBLs | 0 MCF | Feb 1986 - Apr 1993 |
| Germany Operating Company | Wyoming | 0 BBLs | 0 MCF | Jan 1994 - Mar 1995 |
| Getty Oil Company | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Jan 1985 |
| Gibbs William | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Feb 2000 |
| Gibson J W | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Jun 1991 |
| Giffin Drilling Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1985 - Dec 1993 |
| Gilmore Oil & Gas | Wyoming | 0 BBLs | 0 MCF | Sep 1987 - Dec 1994 |
| Girouard Richard L | Wyoming | 0 BBLs | 0 MCF | Jan 1980 - May 1985 |
| GKM Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1981 - Mar 1990 |
| Glenmar Company | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Oct 1998 |
| GLG Energy LP | Wyoming | 0 BBLs | 0 MCF | Jan 1984 - Dec 1992 |
| GMT Energy Corporation | Wyoming | 0 BBLs | 0 MCF | Dec 2001 - Jan 2005 |
| GMT Exploration Company LLC | Wyoming | 287 BBLs | 47,236 MCF | Feb 2005 - Feb 2026 |
| Golden Eagle Exploration Inc | Wyoming | 0 BBLs | 0 MCF | Jul 1981 - Jan 1984 |
| Golden Energy Partners LLC | Wyoming | 0 BBLs | 0 MCF | Dec 2007 - Jan 2010 |
| Golden Eye Resources LLC | Wyoming | 0 BBLs | 0 MCF | May 2002 - Mar 2014 |
| Golden Oilfield Operations Inc | Wyoming | 0 BBLs | 0 MCF | May 2016 - Jul 2017 |
| Goldmark Engineering Inc | Wyoming | 0 BBLs | 0 MCF | Feb 1981 - Oct 2004 |
| Goodstein Fred | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Mar 1984 |
| Gordon Dale G | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Jun 1994 |
| Gordon James P | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Dec 1994 |
| Gorman Construction LLC | Wyoming | 0 BBLs | 0 MCF | Jan 2023 - Nov 2025 |
| Gould Joseph B | Wyoming | 0 BBLs | 0 MCF | Jan 1983 - Apr 2001 |
| Gpo Operations LLC | Wyoming | 137 BBLs | 4,772 MCF | Aug 2017 - Feb 2026 |
| Grace Petroleum Corporation | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Apr 1993 |
| Graham Royalty LTD | Wyoming | 0 BBLs | 0 MCF | Jan 1981 - Sep 1994 |
| Granite Creek Energy LLC | Wyoming | 18,263 BBLs | 60 MCF | May 2023 - Jan 2026 |
| Gray Jess & Carol LLC | Wyoming | 0 BBLs | 0 MCF | Sep 2005 - Jan 2009 |
| Grayhorse Operating Inc | Wyoming | 0 BBLs | 0 MCF | Jun 2000 - Sep 2014 |
| Grayling Resources LTD | Wyoming | 0 BBLs | 0 MCF | Sep 1989 - Jul 2020 |
| Grayson Mill Operating LLC | Wyoming | 0 BBLs | 0 MCF | Aug 2017 - Jun 2023 |
| GRB Resources | Wyoming | 0 BBLs | 0 MCF | Feb 1979 - Mar 2004 |
| Great Basin Resources Inc | Wyoming | 0 BBLs | 0 MCF | Nov 1987 - Dec 1992 |
| Great Eastern Energy Development | Wyoming | 0 BBLs | 0 MCF | Jun 1984 - Feb 2001 |
| Great Northern Drilling Company | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Mar 2008 |
| Great Northern Gas Company | Wyoming | 0 BBLs | 0 MCF | Aug 1996 - Jun 2009 |
| Great Western Drilling Company | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Feb 2025 |
| Great Western Oil Company | Wyoming | 0 BBLs | 0 MCF | Jan 1980 - Dec 1984 |
| Great Western Resources Inc | Wyoming | 0 BBLs | 0 MCF | Aug 1984 - Dec 1989 |
| Green Leon | Wyoming | 0 BBLs | 0 MCF | Oct 1981 - Dec 1983 |
| Green Reserve Energy Holdings LLC | Wyoming | 7,332 BBLs | 431 MCF | Dec 2020 - Feb 2026 |
| Green River Basin Well Service | Wyoming | 0 BBLs | 0 MCF | Jan 1991 - May 1996 |
| Greenstreet Lloyd | Wyoming | 0 BBLs | 0 MCF | Dec 1983 - Dec 1986 |
| Greenwood Resources | Wyoming | 0 BBLs | 0 MCF | Sep 1984 - Jan 1992 |
| Greka Am Inc | Wyoming | 0 BBLs | 0 MCF | Jun 2002 - Jul 2005 |
| Grey Hawk Operating LLC | Wyoming | 0 BBLs | 0 MCF | May 2015 - Jan 2024 |
| Greylock Production LLC | Wyoming | 0 BBLs | 0 MCF | Feb 2022 - Jul 2025 |
| Griffin Bennie C | Wyoming | 0 BBLs | 0 MCF | Jan 1991 - Dec 1993 |
| Griffin Drilling Co | Wyoming | 0 BBLs | 0 MCF | Aug 1993 - Aug 1993 |
| Griffiths Oil LLC | Wyoming | 0 BBLs | 0 MCF | Oct 2008 - Jan 2026 |