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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Midway Energy, LLC | Montana | 1,394 BBLs | 0 MCF | Mar 2019 - Feb 2025 |
| Miller, Frank I. | Montana | 0 BBLs | 0 MCF | Jan 1991 - Jan 2025 |
| Miocene Oil & Gas LTD | Montana | 0 BBLs | 0 MCF | Oct 2001 - Dec 2003 |
| Miocene Oil Company | Montana | 0 BBLs | 0 MCF | Aug 2004 - Nov 2014 |
| Misc Oil Co | Montana | 0 BBLs | 0 MCF | Jan 1991 - Jan 2025 |
| Missouri Basin Well Service, Inc. | Montana | 0 BBLs | 0 MCF | Nov 2003 - Jun 2011 |
| Missouri River Royalty Corporation | Montana | 357 BBLs | 0 MCF | Jan 1991 - Feb 2025 |
| MLB, LLC | Montana | 0 BBLs | 0 MCF | Aug 2004 - Oct 2022 |
| Mogo Reagan, LLC | Montana | 2,640 BBLs | 8,478 MCF | Nov 2019 - Feb 2025 |
| Montalban Oil & Gas Operations, Inc. | Montana | 2,174 BBLs | 50,224 MCF | Jan 1991 - Feb 2025 |
| Montana Energy Company, LLC | Montana | 0 BBLs | 0 MCF | Dec 2020 - Dec 2024 |
| Montana Heartland LLC | Montana | 402 BBLs | 1,027 MCF | Jun 1991 - Feb 2025 |
| Montana Land & Exploration, Inc. | Montana | 0 BBLs | 0 MCF | Nov 2003 - Apr 2019 |
| Montana Land & Mineral Co. | Montana | 0 BBLs | 0 MCF | Aug 2010 - Jan 2025 |
| Montana Oil & Gas, LLC | Montana | 0 BBLs | 0 MCF | Apr 2019 - Dec 2024 |
| Montana Oil Field Acquisition I, LLC | Montana | 0 BBLs | 0 MCF | Oct 2014 - Jun 2016 |
| Montana Power Company | Montana | 0 BBLs | 0 MCF | Jan 1991 - Apr 2002 |
| Montana Power Gas Company | Montana | 0 BBLs | 0 MCF | Jan 1991 - Apr 2002 |
| Montana Resource Management | Montana | 0 BBLs | 0 MCF | Sep 2005 - Jun 2014 |
| Monte Grande Exploration, Inc. | Montana | 0 BBLs | 0 MCF | Jan 1991 - Oct 2000 |
| Morken Production LLC | Montana | 0 BBLs | 0 MCF | Oct 2015 - Oct 2021 |
| Morningstar Operating LLC | Montana | 114,746 BBLs | 170,603 MCF | Jan 2024 - Feb 2025 |
| Mountain Oil & Gas Co. | Montana | 0 BBLs | 0 MCF | Mar 1991 - Feb 2001 |
| Mountain Pacific General Inc. | Montana | 0 BBLs | 0 MCF | Jan 1991 - Jun 2022 |
| Mountain States Resources Inc | Montana | 0 BBLs | 0 MCF | Jan 1991 - Oct 2000 |
| Mountain VIew Energy, Inc. | Montana | 0 BBLs | 0 MCF | Sep 2001 - Feb 2021 |
| Murex Petroleum Corp. | Montana | 0 BBLs | 0 MCF | Jan 2001 - Feb 2025 |
| Murphy Exploration And Production Co. | Montana | 0 BBLs | 0 MCF | Jan 1991 - Jul 2002 |
| Mystique Resources Company | Montana | 0 BBLs | 0 MCF | Nov 2010 - Feb 2023 |
| Nadel And Gussman Rockies, LLC | Montana | 0 BBLs | 0 MCF | Oct 2007 - Apr 2012 |
| Nance Petroleum Corporation | Montana | 0 BBLs | 0 MCF | Jan 1991 - Nov 2007 |
| Native American Energy Group, Inc. | Montana | 0 BBLs | 0 MCF | Nov 2005 - Sep 2012 |
| Natural Gas Processing Co. | Montana | 0 BBLs | 0 MCF | Jan 1991 - Jan 1996 |
| Nautilus Poplar LLC | Montana | 4,571 BBLs | 0 MCF | Jun 2007 - Feb 2025 |
| Navasota Resources LTD. | Montana | 0 BBLs | 0 MCF | May 1994 - Sep 2002 |
| Nearburg Producing Company | Montana | 0 BBLs | 0 MCF | Oct 2007 - Oct 2017 |
| Nelson, Donel Or Patterson, Kristin S. | Montana | 0 BBLs | 0 MCF | Apr 2021 - Apr 2024 |
| Neptune Operating LLC | Montana | 858 BBLs | 1,167 MCF | Oct 2022 - Feb 2025 |
| Nerdlihc Company Inc. | Montana | 0 BBLs | 0 MCF | Mar 1992 - Nov 2006 |
| New Horizon Resources LLC | Montana | 0 BBLs | 0 MCF | Feb 2022 - Jan 2025 |
| Newfield Production Company | Montana | 0 BBLs | 0 MCF | Jul 2007 - Jul 2022 |
| Nexen Oil & Gas USA, Inc. | Montana | 0 BBLs | 0 MCF | Jan 1991 - May 2003 |
| NFR Bear Paw Basin, LLC | Montana | 0 BBLs | 0 MCF | Feb 2007 - Jan 2013 |
| Nielco, Inc. | Montana | 0 BBLs | 0 MCF | Jan 1991 - Apr 2002 |
| Noah Energy, Inc. | Montana | 0 BBLs | 0 MCF | Feb 2018 - Feb 2025 |
| Noble Energy, Inc. | Montana | 0 BBLs | 0 MCF | Jan 2003 - Jun 2016 |
| North American Technical Trading Company, Inc. | Montana | 0 BBLs | 0 MCF | Feb 2004 - Jan 2011 |
| North Range Exploration, LLC | Montana | 0 BBLs | 0 MCF | Apr 2013 - Dec 2015 |
| Northern Oil Production, Inc. | Montana | 5,124 BBLs | 1,807 MCF | May 1992 - Feb 2025 |
| Northern Producing LLC | Montana | 70 BBLs | 0 MCF | Sep 2007 - Feb 2025 |