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| Operator | Operating State | Recent Oil Production | Recent Gas Production | Production Dates on File |
|---|---|---|---|---|
| Sharkey Well Service Inc | Wyoming | 0 BBLs | 0 MCF | Sep 2009 - Dec 2023 |
| Sharples Phillip T Trust | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Nov 2020 |
| Shawnee Oil & Development | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Oct 2010 |
| Shawnee Oil & Gas LLC | Wyoming | 0 BBLs | 0 MCF | Dec 2011 - Mar 2025 |
| Shelco | Wyoming | 0 BBLs | 0 MCF | Jan 2002 - May 2021 |
| Shell Rocky Mountain Production LLC | Wyoming | 0 BBLs | 0 MCF | Dec 2001 - Dec 2008 |
| Shenandoah Energy Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - May 2000 |
| Shenandoah Oil Corporation | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Mar 1979 |
| Shepherd Oil Company | Wyoming | 0 BBLs | 0 MCF | Jan 1983 - Dec 1986 |
| Sheridan Production Co LLC | Wyoming | 0 BBLs | 0 MCF | Oct 2011 - Mar 2020 |
| Sherwood Exploration | Wyoming | 0 BBLs | 0 MCF | Sep 1983 - Dec 1985 |
| Shidler H M | Wyoming | 0 BBLs | 0 MCF | Mar 2001 - Mar 2001 |
| Siegfried R H Inc | Wyoming | 0 BBLs | 0 MCF | Oct 1984 - Dec 1993 |
| Sierra Energy Company | Wyoming | 0 BBLs | 0 MCF | Jan 1987 - Dec 1993 |
| Sierra Trading Corporation | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Sep 1978 |
| Signal Hill Company LLC | Wyoming | 0 BBLs | 0 MCF | Apr 2004 - Dec 2024 |
| Signal Hill Operating LLC | Wyoming | 15,210 BBLs | 648 MCF | Jan 2025 - Feb 2025 |
| Silver Eagle Exploration Inc | Wyoming | 0 BBLs | 0 MCF | Jul 1985 - Jan 1987 |
| Silverado Oil Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1992 - Apr 2000 |
| Simasko Production Co | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Apr 1992 |
| Simon Oil LLC | Wyoming | 3,139 BBLs | 0 MCF | Jun 2000 - Jan 2025 |
| Simonton Gary L | Wyoming | 0 BBLs | 0 MCF | May 1997 - Jun 2000 |
| Simray Production Company LP | Wyoming | 0 BBLs | 0 MCF | Nov 2010 - Dec 2010 |
| Sims Daniel | Wyoming | 0 BBLs | 0 MCF | Feb 1990 - Jul 2001 |
| Sims E E | Wyoming | 0 BBLs | 0 MCF | Jan 1981 - Jan 1990 |
| Sinclair Oil | Wyoming | 0 BBLs | 0 MCF | May 1978 - Feb 2003 |
| Sing Well Service Co Inc | Wyoming | 0 BBLs | 0 MCF | Mar 1979 - Oct 1980 |
| Singer Joseph B Exploration | Wyoming | 0 BBLs | 0 MCF | Jan 1991 - Apr 1993 |
| Six Bar Oil LLC | Wyoming | 4,351 BBLs | 0 MCF | Apr 2017 - Feb 2025 |
| Six Ten Operating Company Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1993 - Dec 1995 |
| Skaer Enterprises Inc | Wyoming | 0 BBLs | 0 MCF | Apr 1987 - Dec 1995 |
| Skidgel Enterprises Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1991 - Sep 2018 |
| Skinner Corporation | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Apr 1985 |
| Skinner Oil & Gas LLC | Wyoming | 0 BBLs | 0 MCF | Mar 2007 - Jan 2024 |
| Skinner'S Resources & Expl Inc | Wyoming | 0 BBLs | 0 MCF | Jun 1982 - Jun 2007 |
| Sklar Exploration Company LLC | Wyoming | 0 BBLs | 0 MCF | Oct 2017 - Apr 2022 |
| Skull Creek A LLC | Wyoming | 0 BBLs | 0 MCF | Jan 1992 - Nov 2024 |
| Skyline Oil Company | Wyoming | 0 BBLs | 0 MCF | Jun 1978 - Jan 1987 |
| Slaughter J M Oil Company | Wyoming | 0 BBLs | 0 MCF | Jul 1987 - Apr 1995 |
| Slawson Exploration Company Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Aug 2019 |
| SM Energy Company | Wyoming | 0 BBLs | 0 MCF | Jul 2006 - Mar 2018 |
| Smith Al | Wyoming | 0 BBLs | 0 MCF | Jan 1984 - Dec 1993 |
| Smith Conley P Operating Co | Wyoming | 0 BBLs | 0 MCF | Jan 1982 - Jun 2000 |
| Smith Gene & George | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Jan 1998 |
| Smith Kevin | Wyoming | 0 BBLs | 0 MCF | Sep 1987 - Sep 2024 |
| Smith Nowlin Jr Oil Company | Wyoming | 0 BBLs | 0 MCF | Jan 1998 - May 2014 |
| Smith Red Plains Production LLC | Wyoming | 2,348 BBLs | 0 MCF | Dec 2022 - Feb 2025 |
| Smokey Gap Ventures | Wyoming | 0 BBLs | 0 MCF | Apr 1982 - Jul 1997 |
| Smokey Oil Company Inc | Wyoming | 0 BBLs | 0 MCF | Jan 1978 - Dec 1996 |
| Snowy Owl LLC | Wyoming | 8,432 BBLs | 4,809 MCF | Dec 2012 - Feb 2025 |