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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Pintail Petroleum, Inc. | Montana | 0 BBLs | 0 MCF | Jul 1993 - Oct 2003 |
| Pintail Petroleum, LTD. | Montana | 0 BBLs | 0 MCF | Nov 2003 - Nov 2007 |
| Pittencrieff America, Inc. | Montana | 0 BBLs | 0 MCF | May 1996 - Mar 1997 |
| Plains Petroleum Operating Co. | Montana | 0 BBLs | 0 MCF | Dec 1991 - May 1997 |
| Pondera Partners Limited Partnership | Montana | 0 BBLs | 0 MCF | Jan 1991 - Sep 2023 |
| Potlatch Oil & Refining Co | Montana | 0 BBLs | 686 MCF | Jan 1991 - Jun 2025 |
| Prairie Dog Exploration, LLC | Montana | 0 BBLs | 0 MCF | Jul 2002 - Jun 2009 |
| Prairie Energy, Inc. | Montana | 0 BBLs | 0 MCF | Jan 1991 - Mar 2002 |
| Presco, Inc. | Montana | 0 BBLs | 0 MCF | Sep 2005 - Oct 2020 |
| Pride Energy Company | Montana | 0 BBLs | 0 MCF | Sep 1995 - Jul 2020 |
| Prima Exploration, Inc. | Montana | 21,323 BBLs | 27,671 MCF | Jan 1991 - Jun 2025 |
| Primary Petroleum Company USA, Inc. | Montana | 0 BBLs | 0 MCF | Feb 2008 - Jan 2018 |
| Primewest Petroleum, Inc. | Montana | 0 BBLs | 0 MCF | Sep 2006 - Dec 2008 |
| Prism Corporation | Montana | 0 BBLs | 0 MCF | Jan 2010 - Aug 2010 |
| Pronghorn Energy Services, Inc | Montana | 0 BBLs | 0 MCF | Jan 1991 - Nov 1997 |
| Prospective Investment & Trading Co. LTD. | Montana | 0 BBLs | 0 MCF | Jan 1991 - Aug 2005 |
| Provident Energy Of Montana, LLC | Montana | 0 BBLs | 0 MCF | Jan 1991 - May 2025 |
| PT Energy, LLC | Montana | 0 BBLs | 0 MCF | Apr 2006 - Nov 2016 |
| Quest Petroleum Corporation | Montana | 0 BBLs | 0 MCF | May 1996 - Apr 1998 |
| Quicksilver Resources, Inc. | Montana | 0 BBLs | 0 MCF | Dec 1997 - Oct 2016 |
| Quinque Oil, LLC | Montana | 56 BBLs | 0 MCF | Mar 2009 - Jun 2025 |
| R & A Oil, Inc. | Montana | 0 BBLs | 0 MCF | Jan 1991 - Apr 2025 |
| R & B Energy, LLC | Montana | 0 BBLs | 0 MCF | Nov 2022 - Feb 2025 |
| R & J Production, Inc. | Montana | 0 BBLs | 0 MCF | Jan 1991 - Mar 2006 |
| R & N Associates,Etal Glen Neubert, Agent | Montana | 0 BBLs | 0 MCF | Jan 1991 - Sep 2005 |
| R&D Interest | Montana | 0 BBLs | 0 MCF | Apr 1998 - Dec 2000 |
| R.C.S. Oil, Inc. | Montana | 0 BBLs | 0 MCF | Mar 2007 - Apr 2025 |
| R.C.S. Oil, LLC | Montana | 0 BBLs | 0 MCF | Feb 2002 - Feb 2007 |
| Ramhorn Energy, LLC | Montana | 144 BBLs | 0 MCF | Dec 2019 - Jun 2025 |
| Ranch Oil Company, Inc. | Montana | 189 BBLs | 0 MCF | Jun 1991 - Jun 2025 |
| Ranck Oil Company, Inc. | Montana | 0 BBLs | 0 MCF | Jan 1991 - Mar 2025 |
| Rankin, Paul | Montana | 0 BBLs | 0 MCF | Nov 1991 - Jun 2016 |
| Rech, Mitchell L. | Montana | 0 BBLs | 0 MCF | Jul 2014 - Nov 2015 |
| Redstone Gas Partners, LLC | Montana | 0 BBLs | 0 MCF | Mar 1998 - Mar 2001 |
| Redstone Oil, LLC | Montana | 0 BBLs | 0 MCF | Jul 2006 - May 2013 |
| Reidt, Cecil | Montana | 0 BBLs | 0 MCF | Jan 1991 - Nov 1996 |
| Remuda Energy Development, LLC | Montana | 0 BBLs | 95 MCF | Nov 2008 - Jun 2025 |
| Reserve Energy Resources, LLC | Montana | 0 BBLs | 0 MCF | Apr 2009 - Jun 2010 |
| Reserve Operating Corp. | Montana | 0 BBLs | 0 MCF | Jan 1991 - Jun 2025 |
| Retamco Operating, Inc. | Montana | 0 BBLs | 0 MCF | Aug 2024 - Apr 2025 |
| Richardson Operating Company | Montana | 0 BBLs | 0 MCF | Jan 1991 - Dec 2000 |
| Ridge Oil & Gas, LLC | Montana | 5,720 BBLs | 793,653 MCF | Feb 2022 - Jun 2025 |
| Rigel Petroleum, Inc. | Montana | 0 BBLs | 0 MCF | Dec 1998 - May 2000 |
| Rim Operating, Inc. | Montana | 6,424 BBLs | 2,781 MCF | Jan 1991 - Jun 2025 |
| Rimrock Colony | Montana | 0 BBLs | 0 MCF | Jan 1991 - Apr 2025 |
| Rimrock Oil Company | Montana | 0 BBLs | 0 MCF | Jan 1996 - Dec 2023 |
| Rincon Oil & Gas LLC | Montana | 0 BBLs | 0 MCF | Sep 1999 - Jun 2022 |
| Ritchie Exploration, Inc. | Montana | 0 BBLs | 0 MCF | Sep 1996 - Feb 2025 |
| Ritter, Laber & Associates, Inc. | Montana | 0 BBLs | 0 MCF | Jan 1992 - May 2025 |
| Rme Petroleum Company | Montana | 0 BBLs | 0 MCF | May 1996 - Aug 1999 |