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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Lep Operating Inc | Wyoming | 0 BBLs | 0 MCF | Sep 1992 - Jul 1998 |
| Lester Oil Company | Wyoming | 0 BBLs | 0 MCF | Aug 1981 - Sep 1994 |
| Levinson Partners Corporation | Wyoming | 0 BBLs | 0 MCF | Aug 1988 - Feb 1995 |
| Lewis & Clark Exploration | Wyoming | 0 BBLs | 0 MCF | Sep 1985 - Feb 1989 |
| Lewis Yale H | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Aug 1986 |
| Lexicon Resources Corporation | Wyoming | 0 BBLs | 0 MCF | Jan 1983 - Apr 1986 |
| Liberty Production Co | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Jul 1979 |
| Liberty Resources Management Co LLC | Wyoming | 0 BBLs | 0 MCF | Apr 2017 - Jul 2018 |
| Lilis Energy Inc | Wyoming | 0 BBLs | 0 MCF | Apr 2010 - Mar 2017 |
| Linc Energy Petroleum Wyo Inc | Wyoming | 0 BBLs | 0 MCF | Mar 2011 - Sep 2016 |
| Lincero LLC | Wyoming | 2 BBLs | 0 MCF | Oct 2018 - Feb 2026 |
| Lindenmuth & Assoc | Wyoming | 0 BBLs | 0 MCF | Jan 1988 - Jun 2001 |
| Linn Operating LLC | Wyoming | 0 BBLs | 0 MCF | Nov 2012 - Jan 2018 |
| Lissolo J W | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Feb 2017 |
| Lissolo Timothy C | Wyoming | 70 BBLs | 0 MCF | Mar 2017 - Jan 2026 |
| Llosu Corporation | Wyoming | 0 BBLs | 0 MCF | Jan 1982 - Mar 2002 |
| Lockridge Operator Inc John P | Wyoming | 0 BBLs | 0 MCF | Aug 1987 - Oct 1995 |
| Loco | Wyoming | 0 BBLs | 0 MCF | Oct 2007 - Jul 2022 |
| Lodestone Operating | Wyoming | 0 BBLs | 0 MCF | Jun 2009 - Oct 2025 |
| Loil Oil LLC | Wyoming | 3,306 BBLs | 7,903 MCF | Nov 2016 - Feb 2026 |
| Lone Star Land And Energy II LLC | Wyoming | 0 BBLs | 0 MCF | Jan 2011 - Apr 2018 |
| Lonetree Petroleum Inc | Wyoming | 0 BBLs | 0 MCF | Jan 2014 - Jun 2022 |
| Long Beach Oil Development Co | Wyoming | 0 BBLs | 0 MCF | Jan 1988 - Jun 2004 |
| Long Trust The | Wyoming | 0 BBLs | 0 MCF | Sep 1987 - Aug 2008 |
| Longs Peak Resources LLC | Wyoming | 21,953 BBLs | 18,618 MCF | Feb 2016 - Feb 2026 |
| Loral Operating LLC | Wyoming | 0 BBLs | 0 MCF | Dec 2003 - Apr 2011 |
| Louisiana Land & Exploration Co | Wyoming | 0 BBLs | 0 MCF | Jan 1980 - Aug 2000 |
| Loundagin N B | Wyoming | 0 BBLs | 0 MCF | Sep 1982 - Sep 2015 |
| Low D J | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Dec 1999 |
| Low D J Inc | Wyoming | 0 BBLs | 0 MCF | Jul 1990 - Jul 1999 |
| Lowry Exploration Inc | Wyoming | 0 BBLs | 0 MCF | Jul 2008 - Jun 2010 |
| Luff Exploration | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Dec 2006 |
| Lukowicz L J | Wyoming | 0 BBLs | 0 MCF | Jun 1983 - Mar 1991 |
| Lusk Operating LLC | Wyoming | 0 BBLs | 0 MCF | Mar 2013 - Jun 2017 |
| Lyco Operating Company | Wyoming | 0 BBLs | 0 MCF | Jun 1995 - Dec 1997 |
| M & C Oil Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1982 - Jan 1999 |
| M & G Oil And Gas Inc | Wyoming | 0 BBLs | 0 MCF | Apr 2009 - Apr 2023 |
| M & H Oil Company | Wyoming | 0 BBLs | 0 MCF | Jan 1979 - Dec 1982 |
| M & K Oil Company LLC | Wyoming | 23,074 BBLs | 76,092 MCF | Jan 1978 - Feb 2026 |
| M & K Oil Operations | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Sep 1994 |
| M & L Oil | Wyoming | 0 BBLs | 0 MCF | Apr 1985 - Nov 2018 |
| M & T Incorporated | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Oct 1980 |
| M & T Oil | Wyoming | 0 BBLs | 0 MCF | Jan 1987 - Dec 1987 |
| M G Production Co | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Dec 1999 |
| M K M Oil Company | Wyoming | 0 BBLs | 0 MCF | Aug 1981 - Jun 1996 |
| M W Petroleum Company | Wyoming | 0 BBLs | 0 MCF | Jan 1984 - Dec 1995 |
| M-3 Industries | Wyoming | 0 BBLs | 0 MCF | Jan 1986 - Dec 2025 |
| M2S Oil LLC | Wyoming | 0 BBLs | 0 MCF | Oct 2022 - Dec 2025 |
| Mack Energy Corporation | Wyoming | 0 BBLs | 0 MCF | May 2011 - Jun 2014 |
| Macpet | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Dec 1980 |