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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| FH Petroleum Corp. | Montana | 0 BBLs | 0 MCF | Jul 2010 - Oct 2017 |
| Fidelity Exploration & Production Co. | Montana | 0 BBLs | 0 MCF | May 2000 - Oct 2015 |
| Five-J.A.B. Inc. | Montana | 0 BBLs | 0 MCF | Jan 2015 - Mar 2016 |
| Florentine Exploration & Production, Inc. | Montana | 0 BBLs | 0 MCF | May 1996 - Mar 1997 |
| Flying J Oil And Gas, Inc. | Montana | 0 BBLs | 0 MCF | Nov 1989 - Dec 2009 |
| Forcenergy Inc. | Montana | 0 BBLs | 0 MCF | Jan 1991 - Dec 2000 |
| Forcenergy Onshore Inc. | Montana | 0 BBLs | 0 MCF | Apr 1996 - Mar 1998 |
| Forest Oil Corporation | Montana | 0 BBLs | 0 MCF | Jan 2001 - Dec 2008 |
| Forward Energy, LLC | Montana | 0 BBLs | 0 MCF | Dec 2006 - Dec 2022 |
| Forza Operating, LLC | Montana | 0 BBLs | 0 MCF | Jul 2022 - Jan 2025 |
| Foster Energy Group L.L.C. | Montana | 0 BBLs | 0 MCF | Nov 2020 - Aug 2021 |
| Foster, Charles P. And Smith, Loren E. | Montana | 0 BBLs | 0 MCF | May 1996 - Apr 1997 |
| Foundation Energy Management, LLC | Montana | 416 BBLs | 310 MCF | Jan 2016 - Feb 2025 |
| Frazer, Edmond G. | Montana | 0 BBLs | 0 MCF | Apr 1991 - Nov 2005 |
| Fulton Fuel Company | Montana | 0 BBLs | 0 MCF | Jan 1991 - Jan 2025 |
| Fulton Producing Co. | Montana | 0 BBLs | 0 MCF | Jan 1991 - Feb 2005 |
| Fulton, William M. | Montana | 0 BBLs | 0 MCF | Jan 1991 - Feb 2005 |
| Furst Engineering, Inc. | Montana | 0 BBLs | 0 MCF | Jan 1991 - Feb 2006 |
| FX Drilling Company, Inc. | Montana | 661 BBLs | 0 MCF | Jan 1991 - Feb 2025 |
| G/S Producing, Inc. | Montana | 0 BBLs | 0 MCF | Jan 1991 - Jan 2025 |
| Gallup City Oil, Inc. | Montana | 0 BBLs | 0 MCF | Jan 1991 - Mar 2011 |
| Gallup City Oil, LLC | Montana | 191 BBLs | 0 MCF | Apr 2011 - Feb 2025 |
| Galuska Exploration & Production LLC | Montana | 0 BBLs | 0 MCF | Jan 2004 - Jul 2021 |
| Garman Stripper Wells, LLC | Montana | 395 BBLs | 0 MCF | Jun 2019 - Feb 2025 |
| General Well Service Inc. | Montana | 0 BBLs | 0 MCF | Jun 2003 - Jun 2003 |
| Genesis St Operating LLC | Montana | 0 BBLs | 0 MCF | May 1992 - Jan 2025 |
| Georesources, Inc. | Montana | 0 BBLs | 0 MCF | Jan 1991 - Oct 2008 |
| Germany Oil Company | Montana | 0 BBLs | 0 MCF | Jan 1996 - Apr 2002 |
| Glacier Minerals, LLC | Montana | 0 BBLs | 0 MCF | Mar 2012 - Jan 2025 |
| Glacier Production, Inc. | Montana | 246 BBLs | 0 MCF | Jan 1991 - Feb 2025 |
| Golden Globe Engineering Inc. | Montana | 0 BBLs | 0 MCF | Apr 1991 - Jan 2003 |
| Grand Resources, LTD. | Montana | 0 BBLs | 0 MCF | Jan 1991 - Jan 2025 |
| Granite Creek Energy LLC | Montana | 8,495 BBLs | 6,567 MCF | Mar 2024 - Feb 2025 |
| Great Northern Drilling Company | Montana | 0 BBLs | 0 MCF | Jan 1991 - Jun 2016 |
| Great Plains Energy, Inc. | Montana | 0 BBLs | 0 MCF | Feb 2014 - Feb 2021 |
| Great Plains Operating, LLC | Montana | 0 BBLs | 0 MCF | Jan 1991 - Dec 2009 |
| Great Plains Resources Inc. | Montana | 0 BBLs | 0 MCF | Feb 1994 - Dec 2009 |
| Green Valley Operating, LLC | Montana | 738 BBLs | 504 MCF | Jun 2022 - Feb 2025 |
| Grey Wolf Production Company, Inc. | Montana | 0 BBLs | 0 MCF | Jan 1991 - Mar 2015 |
| Griffon & Associates, LLC | Montana | 0 BBLs | 0 MCF | Jan 2001 - Jul 2003 |
| Griffon Petroleum, Inc. | Montana | 0 BBLs | 0 MCF | Jan 1991 - May 2007 |
| Grizzly Operating, LLC | Montana | 0 BBLs | 0 MCF | Mar 2007 - Jan 2021 |
| Grynberg, Jack J. | Montana | 0 BBLs | 0 MCF | Jan 1991 - Jun 2021 |
| Gunderson Farms, Inc. | Montana | 0 BBLs | 0 MCF | Jun 2004 - Aug 2011 |
| Gypsy Highview Gathering System, Inc. | Montana | 0 BBLs | 0 MCF | Jan 1991 - Oct 2000 |
| H & R Well Services, Inc. | Montana | 0 BBLs | 0 MCF | Jul 1993 - Sep 2002 |
| H&R Energy, LLC | Montana | 530 BBLs | 3 MCF | Nov 2004 - Feb 2025 |
| Hallwood Petroleum, Inc. | Montana | 0 BBLs | 0 MCF | Jan 1991 - Mar 2000 |
| Hamilton, John E. | Montana | 0 BBLs | 0 MCF | Dec 1993 - Feb 2020 |
| Hammond Valley Colony, Inc. | Montana | 0 BBLs | 1,173 MCF | Oct 2020 - Feb 2025 |