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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Atlantic Oil Corporation | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Dec 1982 |
| Atlantic Richfield Company | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Feb 1994 |
| Atomic Oil & Gas LLC | Wyoming | 0 BBLs | 0 MCF | Sep 2010 - Dec 2012 |
| Atr Energy Corp | Wyoming | 798 BBLs | 0 MCF | Jan 2021 - Sep 2025 |
| Atx Energy Partners LLC | Wyoming | 4,620 BBLs | 5,616 MCF | Jan 2018 - Sep 2025 |
| Augustus Energy Partners LLC | Wyoming | 0 BBLs | 0 MCF | Feb 2009 - Jun 2010 |
| Avalon Energy Corporation | Wyoming | 0 BBLs | 0 MCF | Sep 1987 - Jul 1990 |
| Axem Resources Inc | Wyoming | 0 BBLs | 0 MCF | Apr 1983 - Jul 1997 |
| Axia Energy III LLC | Wyoming | 0 BBLs | 0 MCF | Nov 2022 - Jul 2023 |
| Axiom Energy LLC | Wyoming | 0 BBLs | 0 MCF | Apr 2005 - Feb 2010 |
| Azalea Oil Company LLC | Wyoming | 0 BBLs | 0 MCF | Apr 2023 - Aug 2025 |
| Aztec Gas And Oil Corporation | Wyoming | 0 BBLs | 0 MCF | Apr 1990 - Mar 2000 |
| Aztec Oil And Gas Corporation | Wyoming | 0 BBLs | 0 MCF | Sep 1990 - Sep 1996 |
| B And C Pumping | Wyoming | 0 BBLs | 0 MCF | Jan 1988 - Apr 2014 |
| B And H Enterprises Company | Wyoming | 0 BBLs | 0 MCF | Feb 1996 - Sep 2005 |
| B J Oil Company | Wyoming | 0 BBLs | 0 MCF | Jan 1986 - Dec 1994 |
| B3T LLC | Wyoming | 0 BBLs | 0 MCF | Jun 2016 - Sep 2022 |
| Bacon J R Drilling Inc | Wyoming | 0 BBLs | 0 MCF | Nov 1988 - Sep 1994 |
| Baldes Henry | Wyoming | 0 BBLs | 0 MCF | Sep 1985 - Dec 1998 |
| Balidor Oil & Gas LLC | Wyoming | 0 BBLs | 0 MCF | Apr 2017 - Oct 2021 |
| Ballard Petroleum Holdings LLC | Wyoming | 0 BBLs | 0 MCF | Jan 1983 - Aug 2025 |
| Balsam R C | Wyoming | 0 BBLs | 0 MCF | Jan 1980 - Apr 1991 |
| Bandera Energy Company | Wyoming | 0 BBLs | 0 MCF | Dec 1981 - Mar 1986 |
| Banding M R Inc | Wyoming | 625 BBLs | 0 MCF | Jan 1988 - Sep 2025 |
| Baney Well Service Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Dec 2002 |
| Banks And Conrad | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Sep 1987 |
| Banks Operating Company | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Jul 1989 |
| Bannon Energy Inc | Wyoming | 0 BBLs | 0 MCF | Aug 1992 - Jul 1996 |
| Banta And Haigh | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Feb 1998 |
| Barbe D F | Wyoming | 0 BBLs | 0 MCF | Sep 1988 - Dec 2000 |
| Barlow And Haun Inc | Wyoming | 0 BBLs | 0 MCF | Feb 2006 - Feb 2006 |
| Barn Owls LLC | Wyoming | 26,184 BBLs | 2,340 MCF | Jul 2022 - Sep 2025 |
| Barnette Properties | Wyoming | 0 BBLs | 0 MCF | Jan 1986 - Mar 1991 |
| Barrel Springs Development Corp | Wyoming | 0 BBLs | 0 MCF | Aug 1985 - Oct 1986 |
| Barrett Patrick | Wyoming | 0 BBLs | 0 MCF | Jan 1985 - Apr 1988 |
| Barrick Exploration Company | Wyoming | 0 BBLs | 0 MCF | Jan 1984 - Feb 1986 |
| Basf Corporation | Wyoming | 0 BBLs | 0 MCF | Oct 1987 - Dec 1991 |
| Basin Oil & Gas Operating LLC | Wyoming | 0 BBLs | 0 MCF | Mar 2025 - Aug 2025 |
| Basin Resources Corporation | Wyoming | 0 BBLs | 0 MCF | Apr 2006 - May 2013 |
| Bass Enterprises Production Co | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Feb 2003 |
| Bass Petroleum Inc | Wyoming | 0 BBLs | 0 MCF | Sep 1996 - Feb 2021 |
| Bataa Oil Inc | Wyoming | 344 BBLs | 102 MCF | Dec 1993 - Sep 2025 |
| Bates Creek Oil | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Dec 1986 |
| Bayless Robert L Producer | Wyoming | 0 BBLs | 0 MCF | Aug 1989 - Jul 2001 |
| Bayswater Exploration & Production LLC | Wyoming | 0 BBLs | 0 MCF | Apr 2011 - Dec 2018 |
| Baytex Energy USA LLC | Wyoming | 0 BBLs | 0 MCF | Mar 2009 - Sep 2014 |
| Bce-Mach LLC | Wyoming | 704 BBLs | 322,976 MCF | May 2025 - Sep 2025 |
| Bear Claw Oil And Gas LLC | Wyoming | 0 BBLs | 0 MCF | Jan 2003 - Dec 2010 |
| Bear Oil And Gas Inc | Wyoming | 0 BBLs | 0 MCF | Nov 2005 - Jul 2016 |
| Bearcat Energy LLC (Colorado) | Wyoming | 0 BBLs | 0 MCF | May 2011 - May 2022 |