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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| CDX Gas LLC | Wyoming | 0 BBLs | 0 MCF | Oct 2005 - May 2007 |
| Cedar Resources Corporation | Wyoming | 0 BBLs | 0 MCF | Dec 2005 - Dec 2010 |
| Cedar Ridge Operating Co LLC | Wyoming | 0 BBLs | 0 MCF | Jan 2008 - Dec 2009 |
| Celeron Oil & Gas Company | Wyoming | 0 BBLs | 0 MCF | Jul 1982 - Sep 1987 |
| Celsius Energy Company | Wyoming | 0 BBLs | 0 MCF | Jan 1983 - Apr 1999 |
| Cenergy Resources LLC | Wyoming | 305 BBLs | 9,818 MCF | Jul 2023 - Oct 2024 |
| Cenex | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Oct 1995 |
| Centennial Energy | Wyoming | 0 BBLs | 0 MCF | Jan 1993 - Jul 2024 |
| Central Operating Inc | Wyoming | 0 BBLs | 0 MCF | Nov 1983 - Dec 1995 |
| Central Resources Inc | Wyoming | 0 BBLs | 0 MCF | Feb 1991 - Sep 2000 |
| Central Wyoming Resources LTD | Wyoming | 0 BBLs | 0 MCF | May 1996 - Jul 2021 |
| Century Energy | Wyoming | 0 BBLs | 0 MCF | Jan 1989 - Dec 1996 |
| Century Oil & Gas Corporation | Wyoming | 0 BBLs | 0 MCF | Jan 1980 - Dec 1987 |
| Century Oil And Gas LLC | Wyoming | 3,347 BBLs | 13,119 MCF | Dec 2018 - Oct 2024 |
| Century Production Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1985 - Dec 1986 |
| Cerelli Petroleum Inc | Wyoming | 0 BBLs | 0 MCF | Jun 1983 - Aug 1985 |
| CH4 Energy LLC | Wyoming | 0 BBLs | 0 MCF | Nov 2002 - May 2006 |
| Chaco Energy Company | Wyoming | 3,610 BBLs | 49,875 MCF | Apr 1999 - Sep 2024 |
| Chambers Jerry | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Dec 1993 |
| Champion Ventures Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Mar 1979 |
| Chancellor & Dolezal | Wyoming | 0 BBLs | 0 MCF | Jan 1982 - Apr 1992 |
| Chandler Energy LLC | Wyoming | 0 BBLs | 0 MCF | Jun 2002 - Sep 2004 |
| Chaparral Energy LLC | Wyoming | 0 BBLs | 0 MCF | Sep 2000 - Dec 2011 |
| Chaparral Resources Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Jan 1996 |
| Chaparral Resources LLC | Wyoming | 0 BBLs | 0 MCF | Feb 2007 - Dec 2011 |
| Chapman Exploration Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Dec 1986 |
| Chapman Oil Company | Wyoming | 264 BBLs | 0 MCF | Mar 1995 - Oct 2024 |
| Charger Resources LLC | Wyoming | 0 BBLs | 0 MCF | Jan 2012 - Apr 2015 |
| Chebul William | Wyoming | 0 BBLs | 0 MCF | Feb 1978 - Oct 1978 |
| Cheetah Oil Inc | Wyoming | 0 BBLs | 0 MCF | Feb 1982 - Dec 2007 |
| Chemily Management Company | Wyoming | 0 BBLs | 0 MCF | Sep 1995 - Apr 2023 |
| Cherokee Oil Production Inc | Wyoming | 0 BBLs | 0 MCF | Jun 1983 - Jan 1997 |
| Chesapeake Operating LLC | Wyoming | 0 BBLs | 0 MCF | Dec 1991 - May 2022 |
| Chevron USA Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Dec 2016 |
| Cheyenne River LLC | Wyoming | 0 BBLs | 0 MCF | Feb 2014 - Nov 2018 |
| Chicken Creek LLC | Wyoming | 0 BBLs | 0 MCF | Feb 2005 - Jan 2006 |
| Chipcore LLC | Wyoming | 4,268 BBLs | 1,534 MCF | Sep 2012 - Oct 2024 |
| Chippewa Oil & Gas Inc | Wyoming | 0 BBLs | 0 MCF | Aug 1982 - Jan 1985 |
| Chriscor Oil & Gas | Wyoming | 0 BBLs | 0 MCF | Feb 1987 - Jul 1987 |
| Christensen C G | Wyoming | 0 BBLs | 0 MCF | Aug 1984 - Sep 1990 |
| Christensen Ranch | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Aug 2021 |
| Christmann John J | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Dec 1994 |
| CHS McPherson Refinery Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Apr 1994 |
| Cig Exploration | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Sep 1999 |
| Cimarex Energy Co | Wyoming | 0 BBLs | 0 MCF | Apr 2006 - Jul 2011 |
| Cinco Natural Resources Corp | Wyoming | 0 BBLs | 0 MCF | Dec 2011 - Jan 2014 |
| Cinnamon Creek Oil & Gas Inc LLC | Wyoming | 0 BBLs | 0 MCF | Jun 2006 - Nov 2006 |
| Ciris Energy Inc | Wyoming | 0 BBLs | 0 MCF | May 2012 - Dec 2016 |
| Cirque Resources LP | Wyoming | 0 BBLs | 0 MCF | Dec 2011 - Aug 2016 |
| Citation Oil & Gas Corporation | Wyoming | 93,683 BBLs | 13,020 MCF | Jan 1981 - Oct 2024 |