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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Robinson Oil Company, LLC | Montana | 0 BBLs | 0 MCF | Jan 2001 - Dec 2015 |
| Rock Creek Oil, Inc. | Montana | 0 BBLs | 0 MCF | Sep 2017 - Jul 2019 |
| Rocky Mountain Oil & Minerals | Montana | 0 BBLs | 0 MCF | Apr 2001 - Nov 2003 |
| Rocky Mountain Operating Co., Inc. | Montana | 0 BBLs | 0 MCF | Jan 1991 - Dec 2011 |
| Roland Oil And Gas | Montana | 0 BBLs | 0 MCF | Oct 2008 - Feb 2023 |
| Rooney Operating Co. | Montana | 0 BBLs | 0 MCF | May 1996 - Apr 1998 |
| Rosetta Resources Operating LP | Montana | 0 BBLs | 0 MCF | May 2011 - Jul 2014 |
| Rossmiller, Duard | Montana | 0 BBLs | 0 MCF | Jan 1991 - Sep 2000 |
| Rossmiller, Duard & Elmer Rossmiller | Montana | 0 BBLs | 0 MCF | Jan 1991 - Oct 2002 |
| S & L Energy, Inc.C/O John D. Lawrence, Jr. | Montana | 0 BBLs | 0 MCF | Jan 1991 - Mar 2025 |
| S & W Petroleum Consultants, Inc. | Montana | 0 BBLs | 0 MCF | Dec 1987 - Feb 2004 |
| Saco, Town Of | Montana | 0 BBLs | 2,198 MCF | Jan 1991 - Mar 2025 |
| Saga Petroleum, LLC | Montana | 0 BBLs | 0 MCF | Aug 2005 - Feb 2018 |
| Sage Creek Colony | Montana | 0 BBLs | 1,954 MCF | Aug 2007 - Mar 2025 |
| Sagebrush Operating, LLC | Montana | 0 BBLs | 0 MCF | Sep 2000 - Jul 2006 |
| Sagebrush Petroleum, Inc. | Montana | 0 BBLs | 0 MCF | Jul 2000 - Feb 2002 |
| Sagebrush Resources II, LLC | Montana | 0 BBLs | 0 MCF | Sep 2012 - Jan 2014 |
| Samedan Oil Corporation | Montana | 0 BBLs | 0 MCF | Jan 1991 - Dec 2002 |
| Samson Oil And Gas USA, Inc. | Montana | 9,255 BBLs | 4,838 MCF | May 2012 - Mar 2025 |
| Samson Resources Company | Montana | 0 BBLs | 0 MCF | Jan 1991 - Feb 2015 |
| Sands Oil Company | Montana | 323 BBLs | 2,947 MCF | Jan 1991 - Mar 2025 |
| Sannes, Ronald M. Or Margaret Ann | Montana | 0 BBLs | 0 MCF | Jan 1991 - Oct 2017 |
| Sauby, Warren | Montana | 0 BBLs | 0 MCF | Jan 1991 - Feb 2009 |
| Scout Energy Management LLC | Montana | 0 BBLs | 0 MCF | Nov 2015 - Feb 2025 |
| Sdoco, LLC | Montana | 0 BBLs | 0 MCF | Jan 2010 - Dec 2024 |
| Seagull Energy E&P, Inc. | Montana | 0 BBLs | 0 MCF | Dec 1997 - Dec 1997 |
| Sector Resources (Ii) LTD. | Montana | 0 BBLs | 0 MCF | Jun 1991 - Mar 2017 |
| Self, E. M. | Montana | 0 BBLs | 0 MCF | Jun 1991 - Feb 2012 |
| Seymour, James & Lorraine | Montana | 0 BBLs | 0 MCF | Jun 2002 - Jul 2022 |
| Seymour, James G. | Montana | 0 BBLs | 0 MCF | Feb 2016 - Jan 2018 |
| Seymour, Thomas L | Montana | 0 BBLs | 0 MCF | Mar 1991 - May 2002 |
| Shadco | Montana | 0 BBLs | 0 MCF | Jan 1991 - Mar 2025 |
| Shakespeare Oil Co Inc | Montana | 343 BBLs | 0 MCF | May 1996 - Mar 2025 |
| Shay, C.W. | Montana | 0 BBLs | 0 MCF | Jan 1991 - Oct 2013 |
| Shell Western E & P Inc. | Montana | 0 BBLs | 0 MCF | Aug 1987 - Oct 1999 |
| Shotgun Creek, LLC | Montana | 0 BBLs | 0 MCF | Oct 2001 - Sep 2004 |
| Simon And Associates | Montana | 0 BBLs | 0 MCF | Nov 2006 - Aug 2016 |
| Sinclair Oil & Gas Company | Montana | 1,923 BBLs | 3,344 MCF | Dec 1995 - Mar 2025 |
| Slawson Exploration Company Inc | Montana | 13,760 BBLs | 31,284 MCF | Jun 1993 - Mar 2025 |
| Slohcin, Inc. | Montana | 0 BBLs | 0 MCF | Jan 1991 - Apr 2025 |
| Slow Poke Production-George L. Dobson Dba | Montana | 0 BBLs | 0 MCF | Mar 1991 - Mar 2025 |
| SM Energy Company | Montana | 0 BBLs | 0 MCF | Sep 2006 - Jun 2020 |
| Smith, Loren E. And Foster, Chas. P. | Montana | 108 BBLs | 0 MCF | Oct 1992 - Mar 2025 |
| Soap Creek Associates, Inc. | Montana | 2,449 BBLs | 0 MCF | Jan 1991 - Mar 2025 |
| Solomon & McGarvey | Montana | 0 BBLs | 0 MCF | Apr 1996 - Apr 1998 |
| Solomon Exploration | Montana | 0 BBLs | 0 MCF | Apr 1996 - Apr 1998 |
| Solomon Exploration Inc. | Montana | 0 BBLs | 0 MCF | Jan 1991 - Feb 2025 |
| Solomon, Ted | Montana | 0 BBLs | 0 MCF | Dec 1998 - May 1999 |
| Somont Oil Company, Inc. | Montana | 3,922 BBLs | 23,248 MCF | Jan 1986 - Mar 2025 |
| Sonkar, Inc. | Montana | 474 BBLs | 0 MCF | Jan 1991 - Apr 2025 |