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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Brown Tom Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Dec 2004 |
| Brunel John H | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Feb 1981 |
| Bta Oil Producers LLC | Wyoming | 0 BBLs | 0 MCF | Nov 1988 - Jan 2024 |
| Buchanan Wayman W | Wyoming | 0 BBLs | 0 MCF | Jul 1984 - Sep 1986 |
| Buck Creek Freight Inc | Wyoming | 0 BBLs | 0 MCF | Oct 1995 - Sep 2025 |
| Buffalo Resources LLC | Wyoming | 0 BBLs | 0 MCF | Jan 2016 - Aug 2025 |
| Bullock A O | Wyoming | 145 BBLs | 0 MCF | Jan 1986 - Sep 2025 |
| Bullock Gladys C Trust | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Dec 1999 |
| Bummer Bruce L | Wyoming | 0 BBLs | 0 MCF | Jul 1990 - Dec 2007 |
| Bunkirt J J Oil & Gas Corporation | Wyoming | 76 BBLs | 60 MCF | Jan 2001 - Sep 2025 |
| Burk Royalty Co LTD | Wyoming | 0 BBLs | 0 MCF | Sep 2023 - Aug 2025 |
| Burlington Resources Oil & Gas Company L | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Jan 2022 |
| Burnett Oil Co Inc | Wyoming | 439 BBLs | 67 MCF | Jan 1982 - Sep 2025 |
| Burr Oil & Gas Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1989 - Oct 2019 |
| Butler & Sauer SR | Wyoming | 0 BBLs | 0 MCF | Nov 1980 - Sep 1981 |
| Butler Oil Co | Wyoming | 0 BBLs | 0 MCF | Jan 1982 - Dec 1996 |
| Buttonhook Oil | Wyoming | 0 BBLs | 0 MCF | Jan 1987 - Jun 2001 |
| BW Oil LLC | Wyoming | 0 BBLs | 0 MCF | Feb 2010 - Jun 2015 |
| Bwab Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Aug 1996 |
| BXP Operating LLC | Wyoming | 0 BBLs | 0 MCF | Apr 2016 - Aug 2023 |
| Byron Oil Industries Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1983 - Dec 1996 |
| C & H Well Servicing Inc | Wyoming | 536 BBLs | 68 MCF | Jan 1985 - Sep 2025 |
| C & K Petroleum | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Jan 1984 |
| C & S Operating Company LLC | Wyoming | 0 BBLs | 0 MCF | Sep 1996 - Oct 1998 |
| C And M Oil Inc | Wyoming | 0 BBLs | 0 MCF | Jan 2019 - Dec 2024 |
| Cabot Oil & Gas Corporation | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Oct 2011 |
| Caerus Northern Rockies LLC | Wyoming | 0 BBLs | 0 MCF | Jan 2011 - Mar 2021 |
| Calais Resources Inc | Wyoming | 0 BBLs | 0 MCF | Mar 1982 - Jun 1985 |
| Calco Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Feb 1991 |
| Calgary Petroleum Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1985 - Dec 1985 |
| Callaway Oil & Gas LLC | Wyoming | 0 BBLs | 0 MCF | Oct 2004 - Aug 2025 |
| Calstar Energy Group LLC | Wyoming | 0 BBLs | 0 MCF | Apr 2013 - Mar 2014 |
| Cambria Oil Company | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Dec 1996 |
| Camco Operating LLC | Wyoming | 0 BBLs | 0 MCF | Jan 2009 - Feb 2025 |
| Camwest II LP | Wyoming | 0 BBLs | 0 MCF | Apr 2002 - Aug 2006 |
| Camwest Limited Partnership | Wyoming | 0 BBLs | 0 MCF | Jan 1988 - Apr 2004 |
| Caperton Gene | Wyoming | 0 BBLs | 0 MCF | Apr 2007 - Apr 2007 |
| Capitan Operating LLC | Wyoming | 0 BBLs | 0 MCF | Jan 2007 - Jan 2013 |
| Capitol Oil & Gas Corporation | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Feb 2006 |
| Capshaw Jim | Wyoming | 0 BBLs | 0 MCF | Jul 1995 - Jun 2001 |
| Carbon Creek Energy LLC | Wyoming | 0 BBLs | 3,122,334 MCF | Sep 2015 - Sep 2025 |
| Cardinal Wyoming LLC | Wyoming | 17,253 BBLs | 0 MCF | Jun 2024 - Sep 2025 |
| Carlson Petroleum Company | Wyoming | 0 BBLs | 0 MCF | Jan 1982 - Jan 1991 |
| Carol-Holly Oil Corporation | Wyoming | 1,111 BBLs | 707 MCF | Jan 1984 - Sep 2025 |
| Carolla And Hay | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Aug 1983 |
| Carrizo Oil & Gas Inc | Wyoming | 0 BBLs | 0 MCF | Nov 2014 - Jan 2017 |
| Castle Exploration Company Inc | Wyoming | 0 BBLs | 0 MCF | Jun 1999 - May 2002 |
| Castle Rock Oil LLC | Wyoming | 125 BBLs | 0 MCF | Apr 2024 - Oct 2025 |
| Cat Oil | Wyoming | 0 BBLs | 0 MCF | Jan 1995 - May 2001 |
| Catherine No 1 LLC | Wyoming | 0 BBLs | 0 MCF | May 2003 - Nov 2017 |