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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Omni Operating Company | Louisiana | 0 BBLs | 0 MCF | Oct 1982 - Apr 1984 |
| Omni Petroleum Enterprises,Inc | Louisiana | 0 BBLs | 0 MCF | Feb 1980 - Mar 1982 |
| On-Mark Corporation | Louisiana | 0 BBLs | 0 MCF | Mar 1994 - Sep 1999 |
| On-Mark Oil & Gas, LLC | Louisiana | 0 BBLs | 0 MCF | Dec 2005 - Jul 2013 |
| Onshore Exp Cor-La Nat Res Inc | Louisiana | 0 BBLs | 0 MCF | Jan 1977 - Oct 1978 |
| Onshore Pipeline Const Co Inc | Louisiana | 0 BBLs | 0 MCF | Mar 1989 - Aug 1998 |
| Onyx Energy Corporation | Louisiana | 0 BBLs | 0 MCF | May 1981 - Sep 1984 |
| Onyx Energy Dev Of Texas Inc. | Louisiana | 0 BBLs | 0 MCF | Dec 1993 - Dec 1996 |
| Onyx Energy Development, Inc. | Louisiana | 0 BBLs | 0 MCF | Dec 1994 - Jul 1996 |
| Onyx Energy Of Texas Inc. | Louisiana | 0 BBLs | 0 MCF | Sep 1993 - Dec 1996 |
| Onyxx Energy LLC | Louisiana | 0 BBLs | 0 MCF | Jul 1994 - Mar 2017 |
| Opal Oil Inc. | Louisiana | 0 BBLs | 0 MCF | Jul 1989 - Sep 2021 |
| Opmi Operating Company | Louisiana | 0 BBLs | 0 MCF | Aug 1997 - Jun 2002 |
| Ops Group Limited | Louisiana | 0 BBLs | 0 MCF | Jun 2008 - Apr 2009 |
| Optigas, Inc. | Louisiana | 0 BBLs | 0 MCF | Nov 2002 - Mar 2006 |
| Optimistic Oil Co. | Louisiana | 0 BBLs | 0 MCF | May 1984 - Dec 1991 |
| Optimizer Production Company LLC | Louisiana | 0 BBLs | 0 MCF | Oct 2012 - Jun 2013 |
| Options I, L.L.C. | Louisiana | 0 BBLs | 0 MCF | Aug 2010 - Feb 2013 |
| Ora Oil Company | Louisiana | 0 BBLs | 0 MCF | Jun 1977 - May 2017 |
| Ora Shop & Supply, Inc. | Louisiana | 0 BBLs | 0 MCF | Apr 1982 - Dec 1990 |
| Oracle Oil, LLC | Louisiana | 0 BBLs | 0 MCF | May 2000 - Jul 2013 |
| Orb Exploration, L.L.C. | Louisiana | 0 BBLs | 0 MCF | Feb 2012 - Jun 2017 |
| Orca Management, LLC | Louisiana | 0 BBLs | 0 MCF | Feb 2004 - Oct 2004 |
| Orion Oil & Gas, L. L. C. | Louisiana | 0 BBLs | 0 MCF | Feb 2005 - Oct 2007 |
| Orleans Exploration Co., Inc. | Louisiana | 0 BBLs | 0 MCF | Oct 1987 - Aug 1990 |
| Orx Resources, Inc. | Louisiana | 0 BBLs | 0 MCF | Oct 2002 - Dec 2009 |
| Orx Resources, L.L.C. | Louisiana | 0 BBLs | 0 MCF | Jan 2010 - May 2024 |
| Oryx Energy Company | Louisiana | 0 BBLs | 0 MCF | Jan 1977 - Mar 1999 |
| Osage Oil Co., Inc. | Louisiana | 0 BBLs | 0 MCF | Jul 1983 - Feb 1991 |
| Osr Oil & Gas Corp | Louisiana | 1 BBLs | 11,690 MCF | Nov 1997 - Jun 2024 |
| Osyka Permian LLC | Louisiana | 0 BBLs | 0 MCF | Aug 2003 - Aug 2008 |
| Otis C. Coles, Jr. | Louisiana | 0 BBLs | 0 MCF | Jan 1977 - Jan 1998 |
| Otwell | Louisiana | 0 BBLs | 0 MCF | Aug 1992 - Jun 2012 |
| Ouachita Development Corp. | Louisiana | 0 BBLs | 0 MCF | Aug 1986 - Mar 2014 |
| Ouachita Exploration Co., Inc. | Louisiana | 0 BBLs | 0 MCF | Sep 1985 - Aug 1991 |
| Ouida Oil Co. | Louisiana | 0 BBLs | 0 MCF | Sep 1991 - Apr 1999 |
| Output Acquisition Corp. | Louisiana | 0 BBLs | 0 MCF | Nov 2007 - Jul 2010 |
| Owco Production Inc | Louisiana | 0 BBLs | 0 MCF | Feb 1996 - Jan 1997 |
| Owen DRLG Co., Inc. | Louisiana | 0 BBLs | 0 MCF | Jan 1980 - May 1985 |
| Owen F. Trainor | Louisiana | 0 BBLs | 0 MCF | Jan 1977 - Mar 1991 |
| Owen Production Co | Louisiana | 0 BBLs | 0 MCF | Jan 1977 - May 2001 |
| Owl Creek Production Co., Inc. | Louisiana | 0 BBLs | 0 MCF | Oct 1996 - May 2004 |
| Oxbow EP LLC | Louisiana | 0 BBLs | 0 MCF | Sep 2023 - Jun 2024 |
| Oxford Exploration Company | Louisiana | 0 BBLs | 0 MCF | Aug 1989 - Aug 1995 |
| Oxoco Expl. & Production, Inc. | Louisiana | 0 BBLs | 0 MCF | Apr 1983 - Jun 1987 |
| Oxoco Exploration Corp. | Louisiana | 0 BBLs | 0 MCF | Dec 1981 - Jun 1987 |
| Oxtex, Inc. | Louisiana | 0 BBLs | 0 MCF | Apr 1983 - Dec 1985 |
| Oxxo Oil & Gas | Louisiana | 0 BBLs | 0 MCF | Jul 1984 - Mar 1985 |
| Oxy Petroleum, Inc. | Louisiana | 0 BBLs | 0 MCF | Jan 1977 - Jun 1985 |
| Oxy USA Inc. | Louisiana | 0 BBLs | 0 MCF | Apr 1988 - Jan 2000 |